If the new code is substantial, addition of subsystem-specific fault
injection might be appropriate.
-22: Newly-added code has been compiled with `gcc -W'. This will generate
- lots of noise, but is good for finding bugs like "warning: comparison
- between signed and unsigned".
+22: Newly-added code has been compiled with `gcc -W' (use "make
+ EXTRA_CFLAGS=-W"). This will generate lots of noise, but is good for
+ finding bugs like "warning: comparison between signed and unsigned".
23: Tested after it has been merged into the -mm patchset to make sure
that it still works with all of the other queued patches and various
used for several very different kinds of GPIO controller.
That said, if the convention is supported on their platform, drivers should
-use it when possible:
+use it when possible. Platforms should declare GENERIC_GPIO support in
+Kconfig (boolean true), which multi-platform drivers can depend on when
+using the include file:
#include <asm/gpio.h>
/*
*
*/
-static void __attribute__((unused)) gdbstub_show_regs(void)
+static void __maybe_unused gdbstub_show_regs(void)
{
unsigned long *reg;
int loop;
/*
* dump debugging regs
*/
-static void __attribute__((unused)) gdbstub_dump_debugregs(void)
+static void __maybe_unused gdbstub_dump_debugregs(void)
{
gdbstub_printk("DCR %08lx ", __debug_status.dcr);
gdbstub_printk("BRR %08lx\n", __debug_status.brr);
* GDB wants to call malloc() and free() to allocate memory for calling kernel
* functions directly from its command line
*/
-static void *malloc(size_t size) __attribute__((unused));
+static void *malloc(size_t size) __maybe_unused;
static void *malloc(size_t size)
{
return kmalloc(size, GFP_ATOMIC);
}
-static void free(void *p) __attribute__((unused));
+static void free(void *p) __maybe_unused;
static void free(void *p)
{
kfree(p);
}
-static uint32_t ___get_HSR0(void) __attribute__((unused));
+static uint32_t ___get_HSR0(void) __maybe_unused;
static uint32_t ___get_HSR0(void)
{
return __get_HSR(0);
}
-static uint32_t ___set_HSR0(uint32_t x) __attribute__((unused));
+static uint32_t ___set_HSR0(uint32_t x) __maybe_unused;
static uint32_t ___set_HSR0(uint32_t x)
{
__set_HSR(0, x);
.long SYMBOL_NAME(sys_mknod)
.long SYMBOL_NAME(sys_chmod) /* 15 */
.long SYMBOL_NAME(sys_chown16)
- .long SYMBOL_NAME(sys_ni_syscall) /* old break syscall holder */
+ .long SYMBOL_NAME(sys_ni_syscall) /* old break syscall holder */
.long SYMBOL_NAME(sys_stat)
.long SYMBOL_NAME(sys_lseek)
.long SYMBOL_NAME(sys_getpid) /* 20 */
.long SYMBOL_NAME(sys_fstat)
.long SYMBOL_NAME(sys_pause)
.long SYMBOL_NAME(sys_utime) /* 30 */
- .long SYMBOL_NAME(sys_ni_syscall) /* old stty syscall holder */
- .long SYMBOL_NAME(sys_ni_syscall) /* old gtty syscall holder */
+ .long SYMBOL_NAME(sys_ni_syscall) /* old stty syscall holder */
+ .long SYMBOL_NAME(sys_ni_syscall) /* old gtty syscall holder */
.long SYMBOL_NAME(sys_access)
.long SYMBOL_NAME(sys_nice)
- .long SYMBOL_NAME(sys_ni_syscall) /* 35 */ /* old ftime syscall holder */
+ .long SYMBOL_NAME(sys_ni_syscall) /* 35 old ftime syscall holder */
.long SYMBOL_NAME(sys_sync)
.long SYMBOL_NAME(sys_kill)
.long SYMBOL_NAME(sys_rename)
.long SYMBOL_NAME(sys_dup)
.long SYMBOL_NAME(sys_pipe)
.long SYMBOL_NAME(sys_times)
- .long SYMBOL_NAME(sys_ni_syscall) /* old prof syscall holder */
+ .long SYMBOL_NAME(sys_ni_syscall) /* old prof syscall holder */
.long SYMBOL_NAME(sys_brk) /* 45 */
.long SYMBOL_NAME(sys_setgid16)
.long SYMBOL_NAME(sys_getgid16)
.long SYMBOL_NAME(sys_geteuid16)
.long SYMBOL_NAME(sys_getegid16) /* 50 */
.long SYMBOL_NAME(sys_acct)
- .long SYMBOL_NAME(sys_umount) /* recycled never used phys() */
- .long SYMBOL_NAME(sys_ni_syscall) /* old lock syscall holder */
+ .long SYMBOL_NAME(sys_umount) /* recycled never used phys() */
+ .long SYMBOL_NAME(sys_ni_syscall) /* old lock syscall holder */
.long SYMBOL_NAME(sys_ioctl)
.long SYMBOL_NAME(sys_fcntl) /* 55 */
- .long SYMBOL_NAME(sys_ni_syscall) /* old mpx syscall holder */
+ .long SYMBOL_NAME(sys_ni_syscall) /* old mpx syscall holder */
.long SYMBOL_NAME(sys_setpgid)
- .long SYMBOL_NAME(sys_ni_syscall) /* old ulimit syscall holder */
+ .long SYMBOL_NAME(sys_ni_syscall) /* old ulimit syscall holder */
.long SYMBOL_NAME(sys_ni_syscall)
.long SYMBOL_NAME(sys_umask) /* 60 */
.long SYMBOL_NAME(sys_chroot)
.long SYMBOL_NAME(sys_fchown16) /* 95 */
.long SYMBOL_NAME(sys_getpriority)
.long SYMBOL_NAME(sys_setpriority)
- .long SYMBOL_NAME(sys_ni_syscall) /* old profil syscall holder */
+ .long SYMBOL_NAME(sys_ni_syscall) /* old profil syscall holder */
.long SYMBOL_NAME(sys_statfs)
.long SYMBOL_NAME(sys_fstatfs) /* 100 */
.long SYMBOL_NAME(sys_ni_syscall) /* ioperm for i386 */
.long SYMBOL_NAME(sys_capset) /* 185 */
.long SYMBOL_NAME(sys_sigaltstack)
.long SYMBOL_NAME(sys_sendfile)
- .long SYMBOL_NAME(sys_ni_syscall) /* streams1 */
- .long SYMBOL_NAME(sys_ni_syscall) /* streams2 */
+ .long SYMBOL_NAME(sys_ni_syscall) /* streams1 */
+ .long SYMBOL_NAME(sys_ni_syscall) /* streams2 */
.long SYMBOL_NAME(sys_vfork) /* 190 */
.long SYMBOL_NAME(sys_getrlimit)
.long SYMBOL_NAME(sys_mmap2)
.long SYMBOL_NAME(sys_ni_syscall)
.long SYMBOL_NAME(sys_getdents64) /* 220 */
.long SYMBOL_NAME(sys_fcntl64)
- .long SYMBOL_NAME(sys_ni_syscall) /* reserved for TUX */
- .long SYMBOL_NAME(sys_ni_syscall)
+ .long SYMBOL_NAME(sys_ni_syscall) /* reserved TUX */
+ .long SYMBOL_NAME(sys_ni_syscall) /* reserved Security */
.long SYMBOL_NAME(sys_gettid)
- .long SYMBOL_NAME(sys_ni_syscall) /* 225 */ /* sys_readahead */
+ .long SYMBOL_NAME(sys_readahead) /* 225 */
.long SYMBOL_NAME(sys_setxattr)
.long SYMBOL_NAME(sys_lsetxattr)
.long SYMBOL_NAME(sys_fsetxattr)
.long SYMBOL_NAME(sys_futex) /* 240 */
.long SYMBOL_NAME(sys_sched_setaffinity)
.long SYMBOL_NAME(sys_sched_getaffinity)
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_set_thread_area */
- .long SYMBOL_NAME(sys_ni_syscall) /* sys_get_thread_area */
+ .long SYMBOL_NAME(sys_ni_syscall)
+ .long SYMBOL_NAME(sys_ni_syscall)
.long SYMBOL_NAME(sys_io_setup) /* 245 */
.long SYMBOL_NAME(sys_io_destroy)
.long SYMBOL_NAME(sys_io_getevents)
.long SYMBOL_NAME(sys_utimes)
.long SYMBOL_NAME(sys_fadvise64_64)
.long SYMBOL_NAME(sys_ni_syscall) /* sys_vserver */
- .long SYMBOL_NAME(sys_mbind)
- .long SYMBOL_NAME(sys_get_mempolicy)
+ .long SYMBOL_NAME(sys_ni_syscall)
+ .long SYMBOL_NAME(sys_get_mempolicy) /* 275 */
.long SYMBOL_NAME(sys_set_mempolicy)
.long SYMBOL_NAME(sys_mq_open)
.long SYMBOL_NAME(sys_mq_unlink)
.long SYMBOL_NAME(sys_mq_timedreceive) /* 280 */
.long SYMBOL_NAME(sys_mq_notify)
.long SYMBOL_NAME(sys_mq_getsetattr)
- .long SYMBOL_NAME(sys_ni_syscall) /* reserved for kexec */
.long SYMBOL_NAME(sys_waitid)
- .long SYMBOL_NAME(sys_ni_syscall) /* 285 */ /* available */
- .long SYMBOL_NAME(sys_add_key)
+ .long SYMBOL_NAME(sys_ni_syscall) /* sys_kexec_load */
+ .long SYMBOL_NAME(sys_add_key) /* 285 */
.long SYMBOL_NAME(sys_request_key)
.long SYMBOL_NAME(sys_keyctl)
-
- .rept NR_syscalls-(.-SYMBOL_NAME(sys_call_table))/4
- .long SYMBOL_NAME(sys_ni_syscall)
- .endr
+ .long SYMBOL_NAME(sys_ioprio_set)
+ .long SYMBOL_NAME(sys_ioprio_get) /* 290 */
+ .long SYMBOL_NAME(sys_inotify_init)
+ .long SYMBOL_NAME(sys_inotify_add_watch)
+ .long SYMBOL_NAME(sys_inotify_rm_watch)
+ .long SYMBOL_NAME(sys_migrate_pages)
+ .long SYMBOL_NAME(sys_openat) /* 295 */
+ .long SYMBOL_NAME(sys_mkdirat)
+ .long SYMBOL_NAME(sys_mknodat)
+ .long SYMBOL_NAME(sys_fchownat)
+ .long SYMBOL_NAME(sys_futimesat)
+ .long SYMBOL_NAME(sys_fstatat64) /* 300 */
+ .long SYMBOL_NAME(sys_unlinkat)
+ .long SYMBOL_NAME(sys_renameat)
+ .long SYMBOL_NAME(sys_linkat)
+ .long SYMBOL_NAME(sys_symlinkat)
+ .long SYMBOL_NAME(sys_readlinkat) /* 305 */
+ .long SYMBOL_NAME(sys_fchmodat)
+ .long SYMBOL_NAME(sys_faccessat)
+ .long SYMBOL_NAME(sys_ni_syscall) /* sys_pselect6 */
+ .long SYMBOL_NAME(sys_ni_syscall) /* sys_ppoll */
+ .long SYMBOL_NAME(sys_unshare) /* 310 */
+ .long SYMBOL_NAME(sys_set_robust_list)
+ .long SYMBOL_NAME(sys_get_robust_list)
+ .long SYMBOL_NAME(sys_splice)
+ .long SYMBOL_NAME(sys_sync_file_range)
+ .long SYMBOL_NAME(sys_tee) /* 315 */
+ .long SYMBOL_NAME(sys_vmsplice)
+ .long SYMBOL_NAME(sys_ni_syscall) /* sys_move_pages */
+ .long SYMBOL_NAME(sys_getcpu)
+ .long SYMBOL_NAME(sys_ni_syscall) /* sys_epoll_pwait */
.macro call_sp addr
mov.l #SYMBOL_NAME(\addr),er6
.long sys_getcpu
.long sys_epoll_pwait
.long sys_utimensat /* 320 */
+ .long sys_signalfd
+ .long sys_timerfd
+ .long sys_eventfd
bool
default y
+config SCHED_NO_NO_OMIT_FRAME_POINTER
+ bool
+ default y
+
config PREEMPT
bool "Preemptible Kernel"
help
; pte_data = (unsigned long)pte_val(*pte);
ld r2, @r3 ; r2: pte data
- or3 r2, r2, #2 ; _PAGE_PRESENT(=2)
+ and3 r3, r2, #2 ; _PAGE_PRESENT(=2) check
+ beqz r3, 3f
.fillinsn
5:
;
and3 r1, r1, #0xeff
ldi r4, #611 ; _KERNPG_TABLE(=611)
- beq r1, r4, 4f ; !pmd_bad(*pmd) ?
- .fillinsn
-3:
- ldi r1, #0 ; r1: pte_data = 0
- bra 5f
+ bne r1, r4, 3f ; !pmd_bad(*pmd) ?
+
.fillinsn
4:
; pte = pte_offset(pmd, address);
add r4, r3 ; r4: pte
; pte_data = (unsigned long)pte_val(*pte);
ld r1, @r4 ; r1: pte_data
- .fillinsn
+ and3 r3, r1, #2 ; _PAGE_PRESENT(=2) check
+ beqz r3, 3f
+ .fillinsn
;; set tlb
; r0: address, r1: pte_data, r2: entry
; r3,r4: (free)
and3 r4, r4, #(MMU_CONTEXT_ASID_MASK)
or r3, r4
st r3, @r2
- or3 r4, r1, #2 ; _PAGE_PRESENT(=2)
- st r4, @(4,r2) ; set_tlb_data(entry, pte_data);
+ st r1, @(4,r2) ; set_tlb_data(entry, pte_data);
ld r4, @sp+
ld r3, @sp+
ld sp, @sp+
rte
+ .fillinsn
+3:
+ ldi r1, #2 ; r1: pte_data = 0 | _PAGE_PRESENT(=2)
+ bra 5b
+
#else
#error unknown isa configuration
#endif
lv1_get_version_info(&tmp);
}
- hard_irq_enable();
+ __hard_irq_enable();
}
#endif /* CONFIG_PPC64 */
#ifdef CONFIG_PPC32
set_context(current->active_mm->context.id, current->active_mm->pgd);
#endif
-
-#ifdef CONFIG_PPC64
- hard_irq_enable();
-#endif
}
unsigned long ctrl, thread_switch_control;
/*
- * We need to hard disable interrupts, but we also need to mark them
- * hard disabled in the PACA so that the local_irq_enable() done by
- * our caller upon return propertly hard enables.
+ * We need to hard disable interrupts, the local_irq_enable() done by
+ * our caller upon return will hard re-enable.
*/
hard_irq_disable();
- get_paca()->hard_enabled = 0;
ctrl = mfspr(SPRN_CTRLF);
config KERNEL_STACK_ORDER
int "Kernel stack size order"
- default 2
+ default 1 if 64BIT
+ default 0 if !64BIT
help
This option determines the size of UML kernel stacks. They will
be 1 << order pages. The default is OK unless you're running Valgrind
# CONFIG_MAGIC_SYSRQ is not set
CONFIG_NEST_LEVEL=0
# CONFIG_HIGHMEM is not set
-CONFIG_KERNEL_STACK_ORDER=2
+CONFIG_KERNEL_STACK_ORDER=0
CONFIG_UML_REAL_TIME_CLOCK=y
#
/* For crypto assembler code. */
DEFINE(crypto_tfm_ctx_offset, offsetof(struct crypto_tfm, __crt_ctx));
+
+DEFINE(UM_THREAD_SIZE, THREAD_SIZE);
extern void copy_sc(union uml_pt_regs *regs, void *from);
+unsigned long to_irq_stack(int sig, unsigned long *mask_out);
+unsigned long from_irq_stack(int nested);
+
#endif
/* util.c */
extern void stack_protections(unsigned long address);
-extern void task_protections(unsigned long address);
extern int raw(int fd);
extern void setup_machinename(char *machine_out);
extern void setup_hostinfo(char *buf, int len);
.data : {
. = ALIGN(KERNEL_STACK_SIZE); /* init_task */
*(.data.init_task)
+ . = ALIGN(KERNEL_STACK_SIZE);
+ *(.data.init_irqstack)
*(.data .data.* .gnu.linkonce.d.*)
SORT(CONSTRUCTORS)
}
-/*
- * Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
+/*
+ * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,intel.linux}.com)
* Licensed under the GPL
*/
/*
* Initial thread structure.
*
- * We need to make sure that this is 16384-byte aligned due to the
+ * We need to make sure that this is aligned due to the
* way process stacks are handled. This is done by having a special
* "init_task" linker map entry..
*/
-union thread_union init_thread_union
-__attribute__((__section__(".data.init_task"))) =
-{ INIT_THREAD_INFO(init_task) };
+union thread_union init_thread_union
+ __attribute__((__section__(".data.init_task"))) =
+ { INIT_THREAD_INFO(init_task) };
+
+union thread_union cpu0_irqstack
+ __attribute__((__section__(".data.init_irqstack"))) =
+ { INIT_THREAD_INFO(init_task) };
void unprotect_stack(unsigned long stack)
{
- os_protect_memory((void *) stack, (1 << CONFIG_KERNEL_STACK_ORDER) * PAGE_SIZE,
- 1, 1, 0);
+ os_protect_memory((void *) stack, THREAD_SIZE, 1, 1, 0);
}
-
-/*
- * Overrides for Emacs so that we follow Linus's tabbing style.
- * Emacs will notice this stuff at the end of the file and automatically
- * adjust the settings for this buffer only. This must remain at the end
- * of the file.
- * ---------------------------------------------------------------------------
- * Local variables:
- * c-file-style: "linux"
- * End:
- */
-/*
+/*
* Copyright (C) 2000 Jeff Dike (jdike@karaya.com)
* Licensed under the GPL
* Derived (i.e. mostly copied) from arch/i386/kernel/irq.c:
#include "sigio.h"
#include "um_malloc.h"
#include "misc_constants.h"
+#include "as-layout.h"
/*
* Generic, controller-independent functions:
if (i < NR_IRQS) {
spin_lock_irqsave(&irq_desc[i].lock, flags);
action = irq_desc[i].action;
- if (!action)
+ if (!action)
goto skip;
seq_printf(p, "%3d: ",i);
#ifndef CONFIG_SMP
out:
return err;
}
+
+/*
+ * IRQ stack entry and exit:
+ *
+ * Unlike i386, UML doesn't receive IRQs on the normal kernel stack
+ * and switch over to the IRQ stack after some preparation. We use
+ * sigaltstack to receive signals on a separate stack from the start.
+ * These two functions make sure the rest of the kernel won't be too
+ * upset by being on a different stack. The IRQ stack has a
+ * thread_info structure at the bottom so that current et al continue
+ * to work.
+ *
+ * to_irq_stack copies the current task's thread_info to the IRQ stack
+ * thread_info and sets the tasks's stack to point to the IRQ stack.
+ *
+ * from_irq_stack copies the thread_info struct back (flags may have
+ * been modified) and resets the task's stack pointer.
+ *
+ * Tricky bits -
+ *
+ * What happens when two signals race each other? UML doesn't block
+ * signals with sigprocmask, SA_DEFER, or sa_mask, so a second signal
+ * could arrive while a previous one is still setting up the
+ * thread_info.
+ *
+ * There are three cases -
+ * The first interrupt on the stack - sets up the thread_info and
+ * handles the interrupt
+ * A nested interrupt interrupting the copying of the thread_info -
+ * can't handle the interrupt, as the stack is in an unknown state
+ * A nested interrupt not interrupting the copying of the
+ * thread_info - doesn't do any setup, just handles the interrupt
+ *
+ * The first job is to figure out whether we interrupted stack setup.
+ * This is done by xchging the signal mask with thread_info->pending.
+ * If the value that comes back is zero, then there is no setup in
+ * progress, and the interrupt can be handled. If the value is
+ * non-zero, then there is stack setup in progress. In order to have
+ * the interrupt handled, we leave our signal in the mask, and it will
+ * be handled by the upper handler after it has set up the stack.
+ *
+ * Next is to figure out whether we are the outer handler or a nested
+ * one. As part of setting up the stack, thread_info->real_thread is
+ * set to non-NULL (and is reset to NULL on exit). This is the
+ * nesting indicator. If it is non-NULL, then the stack is already
+ * set up and the handler can run.
+ */
+
+static unsigned long pending_mask;
+
+unsigned long to_irq_stack(int sig, unsigned long *mask_out)
+{
+ struct thread_info *ti;
+ unsigned long mask, old;
+ int nested;
+
+ mask = xchg(&pending_mask, 1 << sig);
+ if(mask != 0){
+ /* If any interrupts come in at this point, we want to
+ * make sure that their bits aren't lost by our
+ * putting our bit in. So, this loop accumulates bits
+ * until xchg returns the same value that we put in.
+ * When that happens, there were no new interrupts,
+ * and pending_mask contains a bit for each interrupt
+ * that came in.
+ */
+ old = 1 << sig;
+ do {
+ old |= mask;
+ mask = xchg(&pending_mask, old);
+ } while(mask != old);
+ return 1;
+ }
+
+ ti = current_thread_info();
+ nested = (ti->real_thread != NULL);
+ if(!nested){
+ struct task_struct *task;
+ struct thread_info *tti;
+
+ task = cpu_tasks[ti->cpu].task;
+ tti = task_thread_info(task);
+ *ti = *tti;
+ ti->real_thread = tti;
+ task->stack = ti;
+ }
+
+ mask = xchg(&pending_mask, 0);
+ *mask_out |= mask | nested;
+ return 0;
+}
+
+unsigned long from_irq_stack(int nested)
+{
+ struct thread_info *ti, *to;
+ unsigned long mask;
+
+ ti = current_thread_info();
+
+ pending_mask = 1;
+
+ to = ti->real_thread;
+ current->stack = to;
+ ti->real_thread = NULL;
+ *to = *ti;
+
+ mask = xchg(&pending_mask, 0);
+ return mask & ~1;
+}
+
extern int userspace_pid[];
+extern char cpu0_irqstack[];
+
int start_uml_skas(void)
{
+ stack_protections((unsigned long) &cpu0_irqstack);
+ set_sigstack(cpu0_irqstack, THREAD_SIZE);
if(proc_mm)
userspace_pid[0] = start_userspace(0);
enable_timer();
free_page(stack);
protect_memory(uml_reserved, high_physmem - uml_reserved, 1, 1, 0, 1);
- task_protections((unsigned long) current_thread);
+ stack_protections((unsigned long) current_thread);
force_flush_all();
unblock_signals();
}
if(current->mm != current->parent->mm)
protect_memory(uml_reserved, high_physmem - uml_reserved, 1,
1, 0, 1);
- task_protections((unsigned long) current_thread);
+ stack_protections((unsigned long) current_thread);
free_page(current->thread.temp_stack);
local_irq_disable();
uml_postsetup();
- task_protections((unsigned long) &init_thread_info);
+ stack_protections((unsigned long) &init_thread_info);
os_flush_stdout();
return CHOOSE_MODE(start_uml_tt(), start_uml_skas());
{
. = ALIGN(KERNEL_STACK_SIZE); /* init_task */
*(.data.init_task)
+ . = ALIGN(KERNEL_STACK_SIZE);
+ *(.data.init_irqstack)
*(.data)
*(.gnu.linkonce.d*)
CONSTRUCTORS
static void real_alarm_handler(int sig, struct sigcontext *sc)
{
+ union uml_pt_regs regs;
+
if(sig == SIGALRM)
switch_timers(0);
- CHOOSE_MODE_PROC(sig_handler_common_tt, sig_handler_common_skas,
- sig, sc);
+ if(sc != NULL)
+ copy_sc(®s, sc);
+ regs.skas.is_user = 0;
+ unblock_signals();
+ timer_handler(sig, ®s);
if(sig == SIGALRM)
switch_timers(1);
-
}
void alarm_handler(int sig, struct sigcontext *sc)
void (*handlers[_NSIG])(int sig, struct sigcontext *sc);
+void handle_signal(int sig, struct sigcontext *sc)
+{
+ unsigned long pending = 0;
+
+ do {
+ int nested, bail;
+
+ /*
+ * pending comes back with one bit set for each
+ * interrupt that arrived while setting up the stack,
+ * plus a bit for this interrupt, plus the zero bit is
+ * set if this is a nested interrupt.
+ * If bail is true, then we interrupted another
+ * handler setting up the stack. In this case, we
+ * have to return, and the upper handler will deal
+ * with this interrupt.
+ */
+ bail = to_irq_stack(sig, &pending);
+ if(bail)
+ return;
+
+ nested = pending & 1;
+ pending &= ~1;
+
+ while((sig = ffs(pending)) != 0){
+ sig--;
+ pending &= ~(1 << sig);
+ (*handlers[sig])(sig, sc);
+ }
+
+ /* Again, pending comes back with a mask of signals
+ * that arrived while tearing down the stack. If this
+ * is non-zero, we just go back, set up the stack
+ * again, and handle the new interrupts.
+ */
+ if(!nested)
+ pending = from_irq_stack(nested);
+ } while(pending);
+}
+
extern void hard_handler(int sig);
void set_handler(int sig, void (*handler)(int), int flags, ...)
void userspace(union uml_pt_regs *regs)
{
int err, status, op, pid = userspace_pid[0];
- int local_using_sysemu; /*To prevent races if using_sysemu changes under us.*/
+ /* To prevent races if using_sysemu changes under us.*/
+ int local_using_sysemu;
while(1){
restore_registers(pid, regs);
/* Now we set local_using_sysemu to be used for one loop */
local_using_sysemu = get_using_sysemu();
- op = SELECT_PTRACE_OPERATION(local_using_sysemu, singlestepping(NULL));
+ op = SELECT_PTRACE_OPERATION(local_using_sysemu,
+ singlestepping(NULL));
err = ptrace(op, pid, 0, 0);
if(err)
void new_thread(void *stack, jmp_buf *buf, void (*handler)(void))
{
(*buf)[0].JB_IP = (unsigned long) handler;
- (*buf)[0].JB_SP = (unsigned long) stack +
- (PAGE_SIZE << UML_CONFIG_KERNEL_STACK_ORDER) - sizeof(void *);
+ (*buf)[0].JB_SP = (unsigned long) stack + UM_THREAD_SIZE -
+ sizeof(void *);
}
#define INIT_JMP_NEW_THREAD 0
case INIT_JMP_NEW_THREAD:
(*switch_buf)[0].JB_IP = (unsigned long) new_thread_handler;
(*switch_buf)[0].JB_SP = (unsigned long) stack +
- (PAGE_SIZE << UML_CONFIG_KERNEL_STACK_ORDER) -
- sizeof(void *);
+ UM_THREAD_SIZE - sizeof(void *);
break;
case INIT_JMP_CALLBACK:
(*cb_proc)(cb_arg);
/*
- * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com)
+ * Copyright (C) 2006 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#include <signal.h>
-extern void (*handlers[])(int sig, struct sigcontext *sc);
+extern void handle_signal(int sig, struct sigcontext *sc);
void hard_handler(int sig)
{
- struct sigcontext *sc = (struct sigcontext *) (&sig + 1);
-
- (*handlers[sig])(sig, sc);
+ handle_signal(sig, (struct sigcontext *) (&sig + 1));
}
/*
- * Copyright (C) 2006 Jeff Dike (jdike@addtoit.com)
+ * Copyright (C) 2006 Jeff Dike (jdike@{addtoit,linux.intel}.com)
* Licensed under the GPL
*/
#include <signal.h>
-extern void (*handlers[])(int sig, struct sigcontext *sc);
+extern void handle_signal(int sig, struct sigcontext *sc);
void hard_handler(int sig)
{
struct ucontext *uc;
asm("movq %%rdx, %0" : "=r" (uc));
- (*handlers[sig])(sig, (struct sigcontext *) &uc->uc_mcontext);
+ handle_signal(sig, (struct sigcontext *) &uc->uc_mcontext);
}
void stack_protections(unsigned long address)
{
- int prot = PROT_READ | PROT_WRITE | PROT_EXEC;
-
- if(mprotect((void *) address, UM_KERN_PAGE_SIZE, prot) < 0)
- panic("protecting stack failed, errno = %d", errno);
-}
-
-void task_protections(unsigned long address)
-{
- unsigned long guard = address + UM_KERN_PAGE_SIZE;
- unsigned long stack = guard + UM_KERN_PAGE_SIZE;
- int prot = 0, pages;
-
-#ifdef notdef
- if(mprotect((void *) stack, UM_KERN_PAGE_SIZE, prot) < 0)
- panic("protecting guard page failed, errno = %d", errno);
-#endif
- pages = (1 << UML_CONFIG_KERNEL_STACK_ORDER) - 2;
- prot = PROT_READ | PROT_WRITE | PROT_EXEC;
- if(mprotect((void *) stack, pages * UM_KERN_PAGE_SIZE, prot) < 0)
+ if(mprotect((void *) address, UM_THREAD_SIZE,
+ PROT_READ | PROT_WRITE | PROT_EXEC) < 0)
panic("protecting stack failed, errno = %d", errno);
}
/* XXX tcsetattr could have applied only some changes
* (and cfmakeraw() is a set of changes) */
- return(0);
+ return 0;
}
void setup_machinename(char *machine_out)
.quad sys_getcpu
.quad sys_epoll_pwait
.quad compat_sys_utimensat /* 320 */
+ .quad sys_signalfd
+ .quad sys_timerfd
+ .quad sys_eventfd
ia32_syscall_end:
{
int i;
- /*
- * Make sure kernel is aligned to 2MB address. Catching it at compile
- * time is better. Change your config file and compile the kernel
- * for a 2MB aligned address (CONFIG_PHYSICAL_START)
- */
- BUILD_BUG_ON(CONFIG_PHYSICAL_START & (__KERNEL_ALIGN - 1));
-
/* clear bss before set_intr_gate with early_idt_handler */
clear_bss();
}
struct tty_ldisc tty_ldisc_N_TTY = {
- TTY_LDISC_MAGIC, /* magic */
- "n_tty", /* name */
- 0, /* num */
- 0, /* flags */
- n_tty_open, /* open */
- n_tty_close, /* close */
- n_tty_flush_buffer, /* flush_buffer */
- n_tty_chars_in_buffer, /* chars_in_buffer */
- read_chan, /* read */
- write_chan, /* write */
- n_tty_ioctl, /* ioctl */
- n_tty_set_termios, /* set_termios */
- normal_poll, /* poll */
- NULL, /* hangup */
- n_tty_receive_buf, /* receive_buf */
- n_tty_write_wakeup /* write_wakeup */
+ .magic = TTY_LDISC_MAGIC,
+ .name = "n_tty",
+ .open = n_tty_open,
+ .close = n_tty_close,
+ .flush_buffer = n_tty_flush_buffer,
+ .chars_in_buffer = n_tty_chars_in_buffer,
+ .read = read_chan,
+ .write = write_chan,
+ .ioctl = n_tty_ioctl,
+ .set_termios = n_tty_set_termios,
+ .poll = normal_poll,
+ .receive_buf = n_tty_receive_buf,
+ .write_wakeup = n_tty_write_wakeup
};
rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Host number %Zd, name ``%s''\n", HostP - p->RIOHosts, HostP->Name);
rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: Rup number 0x%x\n", rup);
- if (Rup >= (unsigned short) MAX_RUP) {
+ if (Rup < (unsigned short) MAX_RUP) {
rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for RTA ``%s''\n", HostP->Mapping[Rup].Name);
} else
rio_dprintk(RIO_DEBUG_CMD, "CONTROL information: This is the RUP for link ``%c'' of host ``%s''\n", ('A' + Rup - MAX_RUP), HostP->Name);
/*
* Info->count is now 1; so it's safe to sleep now.
*/
- info->session = process_session(current);
- info->pgrp = process_group(current);
-
if ((info->flags & ROCKET_INITIALIZED) == 0) {
cp = &info->channel;
sSetRxTrigger(cp, TRIG_1);
int xmit_head;
int xmit_tail;
int xmit_cnt;
- int session;
- int pgrp;
int cd_status;
int ignore_status_mask;
int read_status_mask;
return 0;
}
+/*
+ * support for 32 bit ioctl calls on 64 bit systems
+ */
+#ifdef CONFIG_COMPAT
+static long get_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *user_params)
+{
+ struct MGSL_PARAMS32 tmp_params;
+
+ DBGINFO(("%s get_params32\n", info->device_name));
+ tmp_params.mode = (compat_ulong_t)info->params.mode;
+ tmp_params.loopback = info->params.loopback;
+ tmp_params.flags = info->params.flags;
+ tmp_params.encoding = info->params.encoding;
+ tmp_params.clock_speed = (compat_ulong_t)info->params.clock_speed;
+ tmp_params.addr_filter = info->params.addr_filter;
+ tmp_params.crc_type = info->params.crc_type;
+ tmp_params.preamble_length = info->params.preamble_length;
+ tmp_params.preamble = info->params.preamble;
+ tmp_params.data_rate = (compat_ulong_t)info->params.data_rate;
+ tmp_params.data_bits = info->params.data_bits;
+ tmp_params.stop_bits = info->params.stop_bits;
+ tmp_params.parity = info->params.parity;
+ if (copy_to_user(user_params, &tmp_params, sizeof(struct MGSL_PARAMS32)))
+ return -EFAULT;
+ return 0;
+}
+
+static long set_params32(struct slgt_info *info, struct MGSL_PARAMS32 __user *new_params)
+{
+ struct MGSL_PARAMS32 tmp_params;
+
+ DBGINFO(("%s set_params32\n", info->device_name));
+ if (copy_from_user(&tmp_params, new_params, sizeof(struct MGSL_PARAMS32)))
+ return -EFAULT;
+
+ spin_lock(&info->lock);
+ info->params.mode = tmp_params.mode;
+ info->params.loopback = tmp_params.loopback;
+ info->params.flags = tmp_params.flags;
+ info->params.encoding = tmp_params.encoding;
+ info->params.clock_speed = tmp_params.clock_speed;
+ info->params.addr_filter = tmp_params.addr_filter;
+ info->params.crc_type = tmp_params.crc_type;
+ info->params.preamble_length = tmp_params.preamble_length;
+ info->params.preamble = tmp_params.preamble;
+ info->params.data_rate = tmp_params.data_rate;
+ info->params.data_bits = tmp_params.data_bits;
+ info->params.stop_bits = tmp_params.stop_bits;
+ info->params.parity = tmp_params.parity;
+ spin_unlock(&info->lock);
+
+ change_params(info);
+
+ return 0;
+}
+
+static long slgt_compat_ioctl(struct tty_struct *tty, struct file *file,
+ unsigned int cmd, unsigned long arg)
+{
+ struct slgt_info *info = tty->driver_data;
+ int rc = -ENOIOCTLCMD;
+
+ if (sanity_check(info, tty->name, "compat_ioctl"))
+ return -ENODEV;
+ DBGINFO(("%s compat_ioctl() cmd=%08X\n", info->device_name, cmd));
+
+ switch (cmd) {
+
+ case MGSL_IOCSPARAMS32:
+ rc = set_params32(info, compat_ptr(arg));
+ break;
+
+ case MGSL_IOCGPARAMS32:
+ rc = get_params32(info, compat_ptr(arg));
+ break;
+
+ case MGSL_IOCGPARAMS:
+ case MGSL_IOCSPARAMS:
+ case MGSL_IOCGTXIDLE:
+ case MGSL_IOCGSTATS:
+ case MGSL_IOCWAITEVENT:
+ case MGSL_IOCGIF:
+ case MGSL_IOCSGPIO:
+ case MGSL_IOCGGPIO:
+ case MGSL_IOCWAITGPIO:
+ case TIOCGICOUNT:
+ rc = ioctl(tty, file, cmd, (unsigned long)(compat_ptr(arg)));
+ break;
+
+ case MGSL_IOCSTXIDLE:
+ case MGSL_IOCTXENABLE:
+ case MGSL_IOCRXENABLE:
+ case MGSL_IOCTXABORT:
+ case TIOCMIWAIT:
+ case MGSL_IOCSIF:
+ rc = ioctl(tty, file, cmd, arg);
+ break;
+ }
+
+ DBGINFO(("%s compat_ioctl() cmd=%08X rc=%d\n", info->device_name, cmd, rc));
+ return rc;
+}
+#else
+#define slgt_compat_ioctl NULL
+#endif /* ifdef CONFIG_COMPAT */
+
/*
* proc fs support
*/
.chars_in_buffer = chars_in_buffer,
.flush_buffer = flush_buffer,
.ioctl = ioctl,
+ .compat_ioctl = slgt_compat_ioctl,
.throttle = throttle,
.unthrottle = unthrottle,
.send_xchar = send_xchar,
static int tty_release(struct inode *, struct file *);
int tty_ioctl(struct inode * inode, struct file * file,
unsigned int cmd, unsigned long arg);
+#ifdef CONFIG_COMPAT
+static long tty_compat_ioctl(struct file * file, unsigned int cmd,
+ unsigned long arg);
+#else
+#define tty_compat_ioctl NULL
+#endif
static int tty_fasync(int fd, struct file * filp, int on);
static void release_tty(struct tty_struct *tty, int idx);
static void __proc_set_tty(struct task_struct *tsk, struct tty_struct *tty);
return POLLIN | POLLOUT | POLLERR | POLLHUP | POLLRDNORM | POLLWRNORM;
}
-static int hung_up_tty_ioctl(struct inode * inode, struct file * file,
- unsigned int cmd, unsigned long arg)
+static long hung_up_tty_ioctl(struct file * file,
+ unsigned int cmd, unsigned long arg)
{
return cmd == TIOCSPGRP ? -ENOTTY : -EIO;
}
.write = tty_write,
.poll = tty_poll,
.ioctl = tty_ioctl,
+ .compat_ioctl = tty_compat_ioctl,
.open = tty_open,
.release = tty_release,
.fasync = tty_fasync,
.write = tty_write,
.poll = tty_poll,
.ioctl = tty_ioctl,
+ .compat_ioctl = tty_compat_ioctl,
.open = ptmx_open,
.release = tty_release,
.fasync = tty_fasync,
.write = redirected_tty_write,
.poll = tty_poll,
.ioctl = tty_ioctl,
+ .compat_ioctl = tty_compat_ioctl,
.open = tty_open,
.release = tty_release,
.fasync = tty_fasync,
.read = hung_up_tty_read,
.write = hung_up_tty_write,
.poll = hung_up_tty_poll,
- .ioctl = hung_up_tty_ioctl,
+ .unlocked_ioctl = hung_up_tty_ioctl,
+ .compat_ioctl = hung_up_tty_ioctl,
.release = tty_release,
};
return retval;
}
+#ifdef CONFIG_COMPAT
+static long tty_compat_ioctl(struct file * file, unsigned int cmd,
+ unsigned long arg)
+{
+ struct inode *inode = file->f_dentry->d_inode;
+ struct tty_struct *tty = file->private_data;
+ struct tty_ldisc *ld;
+ int retval = -ENOIOCTLCMD;
+
+ if (tty_paranoia_check(tty, inode, "tty_ioctl"))
+ return -EINVAL;
+
+ if (tty->driver->compat_ioctl) {
+ retval = (tty->driver->compat_ioctl)(tty, file, cmd, arg);
+ if (retval != -ENOIOCTLCMD)
+ return retval;
+ }
+
+ ld = tty_ldisc_ref_wait(tty);
+ if (ld->compat_ioctl)
+ retval = ld->compat_ioctl(tty, file, cmd, arg);
+ tty_ldisc_deref(ld);
+
+ return retval;
+}
+#endif
/*
* This implements the "Secure Attention Key" --- the idea is to
driver->write_room = op->write_room;
driver->chars_in_buffer = op->chars_in_buffer;
driver->ioctl = op->ioctl;
+ driver->compat_ioctl = op->compat_ioctl;
driver->set_termios = op->set_termios;
driver->throttle = op->throttle;
driver->unthrottle = op->unthrottle;
if (compat) {
len = NBITS_COMPAT(maxbit) * sizeof(compat_long_t);
- if (len < maxlen)
+ if (len > maxlen)
len = maxlen;
for (i = 0; i < len / sizeof(compat_long_t); i++)
*
* Note: the following is an unsigned comparison.
*/
- if ((curr_events - rdev->last_events + 4096) > 8192) {
+ if ((long)curr_events - (long)rdev->last_events > 4096) {
rdev->last_events = curr_events;
idle = 0;
}
config RTC_DRV_RS5C313
tristate "Ricoh RS5C313"
- depends on RTC_CLASS && BROKEN
+ depends on RTC_CLASS && SH_LANDISK
help
If you say yes here you get support for the Ricoh RS5C313 RTC chips.
static unsigned char rs5c313_read_data(void)
{
int i;
- unsigned char data;
+ unsigned char data = 0;
for (i = 0; i < 8; i++) {
ndelay(700);
return;
}
-static inline unsigned char rs5c313_read_cntreg(unsigned char addr)
+static inline unsigned char rs5c313_read_cntreg(void)
{
return rs5c313_read_reg(RS5C313_ADDR_CNTREG);
}
static int rs5c313_rtc_read_time(struct device *dev, struct rtc_time *tm)
{
int data;
+ int cnt;
+ cnt = 0;
while (1) {
RS5C313_CEENABLE; /* CE:H */
RS5C313_CEDISABLE;
ndelay(700); /* CE:L */
+ if (cnt++ > 100) {
+ dev_err(dev, "%s: timeout error\n", __FUNCTION__);
+ return -EIO;
+ }
}
data = rs5c313_read_reg(RS5C313_ADDR_SEC);
static int rs5c313_rtc_set_time(struct device *dev, struct rtc_time *tm)
{
int data;
+ int cnt;
+ cnt = 0;
/* busy check. */
while (1) {
RS5C313_CEENABLE; /* CE:H */
RS5C313_MISCOP;
RS5C313_CEDISABLE;
ndelay(700); /* CE:L */
+
+ if (cnt++ > 100) {
+ dev_err(dev, "%s: timeout error\n", __FUNCTION__);
+ return -EIO;
+ }
}
data = BIN2BCD(tm->tm_sec);
static void rs5c313_check_xstp_bit(void)
{
struct rtc_time tm;
+ int cnt;
RS5C313_CEENABLE; /* CE:H */
if (rs5c313_read_cntreg() & RS5C313_CNTREG_WTEN_XSTP) {
rs5c313_write_cntreg(0x07);
/* busy check. */
- while (rs5c313_read_cntreg() & RS5C313_CNTREG_ADJ_BSY)
+ for (cnt = 0; cnt < 100; cnt++) {
+ if (!(rs5c313_read_cntreg() & RS5C313_CNTREG_ADJ_BSY))
+ break;
RS5C313_MISCOP;
+ }
memset(&tm, 0, sizeof(struct rtc_time));
tm.tm_mday = 1;
- tm.tm_mon = 1;
+ tm.tm_mon = 1 - 1;
+ tm.tm_year = 2000 - 1900;
rs5c313_rtc_set_time(NULL, &tm);
printk(KERN_ERR "RICHO RS5C313: invalid value, resetting to "
platform_set_drvdata(pdev, rtc);
- return err;
+ return 0;
}
static int __devexit rs5c313_rtc_remove(struct platform_device *pdev)
This enables using the Freescale iMX SPI controller in master
mode.
+config SPI_MPC52xx_PSC
+ tristate "Freescale MPC52xx PSC SPI controller"
+ depends on SPI_MASTER && PPC_MPC52xx && EXPERIMENTAL
+ help
+ This enables using the Freescale MPC52xx Programmable Serial
+ Controller in master SPI mode.
+
config SPI_MPC83xx
tristate "Freescale MPC83xx SPI controller"
depends on SPI_MASTER && PPC_83xx && EXPERIMENTAL
obj-$(CONFIG_SPI_IMX) += spi_imx.o
obj-$(CONFIG_SPI_PXA2XX) += pxa2xx_spi.o
obj-$(CONFIG_SPI_OMAP_UWIRE) += omap_uwire.o
+obj-$(CONFIG_SPI_MPC52xx_PSC) += mpc52xx_psc_spi.o
obj-$(CONFIG_SPI_MPC83xx) += spi_mpc83xx.o
obj-$(CONFIG_SPI_S3C24XX_GPIO) += spi_s3c24xx_gpio.o
obj-$(CONFIG_SPI_S3C24XX) += spi_s3c24xx.o
--- /dev/null
+/*
+ * MPC52xx SPC in SPI mode driver.
+ *
+ * Maintainer: Dragos Carp
+ *
+ * Copyright (C) 2006 TOPTICA Photonics AG.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/errno.h>
+#include <linux/interrupt.h>
+
+#if defined(CONFIG_PPC_MERGE)
+#include <asm/of_platform.h>
+#else
+#include <linux/platform_device.h>
+#endif
+
+#include <linux/workqueue.h>
+#include <linux/completion.h>
+#include <linux/io.h>
+#include <linux/delay.h>
+#include <linux/spi/spi.h>
+#include <linux/fsl_devices.h>
+
+#include <asm/mpc52xx.h>
+#include <asm/mpc52xx_psc.h>
+
+#define MCLK 20000000 /* PSC port MClk in hz */
+
+struct mpc52xx_psc_spi {
+ /* fsl_spi_platform data */
+ void (*activate_cs)(u8, u8);
+ void (*deactivate_cs)(u8, u8);
+ u32 sysclk;
+
+ /* driver internal data */
+ struct mpc52xx_psc __iomem *psc;
+ unsigned int irq;
+ u8 bits_per_word;
+ u8 busy;
+
+ struct workqueue_struct *workqueue;
+ struct work_struct work;
+
+ struct list_head queue;
+ spinlock_t lock;
+
+ struct completion done;
+};
+
+/* controller state */
+struct mpc52xx_psc_spi_cs {
+ int bits_per_word;
+ int speed_hz;
+};
+
+/* set clock freq, clock ramp, bits per work
+ * if t is NULL then reset the values to the default values
+ */
+static int mpc52xx_psc_spi_transfer_setup(struct spi_device *spi,
+ struct spi_transfer *t)
+{
+ struct mpc52xx_psc_spi_cs *cs = spi->controller_state;
+
+ cs->speed_hz = (t && t->speed_hz)
+ ? t->speed_hz : spi->max_speed_hz;
+ cs->bits_per_word = (t && t->bits_per_word)
+ ? t->bits_per_word : spi->bits_per_word;
+ cs->bits_per_word = ((cs->bits_per_word + 7) / 8) * 8;
+ return 0;
+}
+
+static void mpc52xx_psc_spi_activate_cs(struct spi_device *spi)
+{
+ struct mpc52xx_psc_spi_cs *cs = spi->controller_state;
+ struct mpc52xx_psc_spi *mps = spi_master_get_devdata(spi->master);
+ struct mpc52xx_psc __iomem *psc = mps->psc;
+ u32 sicr;
+ u16 ccr;
+
+ sicr = in_be32(&psc->sicr);
+
+ /* Set clock phase and polarity */
+ if (spi->mode & SPI_CPHA)
+ sicr |= 0x00001000;
+ else
+ sicr &= ~0x00001000;
+ if (spi->mode & SPI_CPOL)
+ sicr |= 0x00002000;
+ else
+ sicr &= ~0x00002000;
+
+ if (spi->mode & SPI_LSB_FIRST)
+ sicr |= 0x10000000;
+ else
+ sicr &= ~0x10000000;
+ out_be32(&psc->sicr, sicr);
+
+ /* Set clock frequency and bits per word
+ * Because psc->ccr is defined as 16bit register instead of 32bit
+ * just set the lower byte of BitClkDiv
+ */
+ ccr = in_be16(&psc->ccr);
+ ccr &= 0xFF00;
+ if (cs->speed_hz)
+ ccr |= (MCLK / cs->speed_hz - 1) & 0xFF;
+ else /* by default SPI Clk 1MHz */
+ ccr |= (MCLK / 1000000 - 1) & 0xFF;
+ out_be16(&psc->ccr, ccr);
+ mps->bits_per_word = cs->bits_per_word;
+
+ if (mps->activate_cs)
+ mps->activate_cs(spi->chip_select,
+ (spi->mode & SPI_CS_HIGH) ? 1 : 0);
+}
+
+static void mpc52xx_psc_spi_deactivate_cs(struct spi_device *spi)
+{
+ struct mpc52xx_psc_spi *mps = spi_master_get_devdata(spi->master);
+
+ if (mps->deactivate_cs)
+ mps->deactivate_cs(spi->chip_select,
+ (spi->mode & SPI_CS_HIGH) ? 1 : 0);
+}
+
+#define MPC52xx_PSC_BUFSIZE (MPC52xx_PSC_RFNUM_MASK + 1)
+/* wake up when 80% fifo full */
+#define MPC52xx_PSC_RFALARM (MPC52xx_PSC_BUFSIZE * 20 / 100)
+
+static int mpc52xx_psc_spi_transfer_rxtx(struct spi_device *spi,
+ struct spi_transfer *t)
+{
+ struct mpc52xx_psc_spi *mps = spi_master_get_devdata(spi->master);
+ struct mpc52xx_psc __iomem *psc = mps->psc;
+ unsigned rb = 0; /* number of bytes receieved */
+ unsigned sb = 0; /* number of bytes sent */
+ unsigned char *rx_buf = (unsigned char *)t->rx_buf;
+ unsigned char *tx_buf = (unsigned char *)t->tx_buf;
+ unsigned rfalarm;
+ unsigned send_at_once = MPC52xx_PSC_BUFSIZE;
+ unsigned recv_at_once;
+ unsigned bpw = mps->bits_per_word / 8;
+
+ if (!t->tx_buf && !t->rx_buf && t->len)
+ return -EINVAL;
+
+ /* enable transmiter/receiver */
+ out_8(&psc->command, MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE);
+ while (rb < t->len) {
+ if (t->len - rb > MPC52xx_PSC_BUFSIZE) {
+ rfalarm = MPC52xx_PSC_RFALARM;
+ } else {
+ send_at_once = t->len - sb;
+ rfalarm = MPC52xx_PSC_BUFSIZE - (t->len - rb);
+ }
+
+ dev_dbg(&spi->dev, "send %d bytes...\n", send_at_once);
+ if (tx_buf) {
+ for (; send_at_once; sb++, send_at_once--) {
+ /* set EOF flag */
+ if (mps->bits_per_word
+ && (sb + 1) % bpw == 0)
+ out_8(&psc->ircr2, 0x01);
+ out_8(&psc->mpc52xx_psc_buffer_8, tx_buf[sb]);
+ }
+ } else {
+ for (; send_at_once; sb++, send_at_once--) {
+ /* set EOF flag */
+ if (mps->bits_per_word
+ && ((sb + 1) % bpw) == 0)
+ out_8(&psc->ircr2, 0x01);
+ out_8(&psc->mpc52xx_psc_buffer_8, 0);
+ }
+ }
+
+
+ /* enable interupts and wait for wake up
+ * if just one byte is expected the Rx FIFO genererates no
+ * FFULL interrupt, so activate the RxRDY interrupt
+ */
+ out_8(&psc->command, MPC52xx_PSC_SEL_MODE_REG_1);
+ if (t->len - rb == 1) {
+ out_8(&psc->mode, 0);
+ } else {
+ out_8(&psc->mode, MPC52xx_PSC_MODE_FFULL);
+ out_be16(&psc->rfalarm, rfalarm);
+ }
+ out_be16(&psc->mpc52xx_psc_imr, MPC52xx_PSC_IMR_RXRDY);
+ wait_for_completion(&mps->done);
+ recv_at_once = in_be16(&psc->rfnum);
+ dev_dbg(&spi->dev, "%d bytes received\n", recv_at_once);
+
+ send_at_once = recv_at_once;
+ if (rx_buf) {
+ for (; recv_at_once; rb++, recv_at_once--)
+ rx_buf[rb] = in_8(&psc->mpc52xx_psc_buffer_8);
+ } else {
+ for (; recv_at_once; rb++, recv_at_once--)
+ in_8(&psc->mpc52xx_psc_buffer_8);
+ }
+ }
+ /* disable transmiter/receiver */
+ out_8(&psc->command, MPC52xx_PSC_TX_DISABLE | MPC52xx_PSC_RX_DISABLE);
+
+ return 0;
+}
+
+static void mpc52xx_psc_spi_work(struct work_struct *work)
+{
+ struct mpc52xx_psc_spi *mps =
+ container_of(work, struct mpc52xx_psc_spi, work);
+
+ spin_lock_irq(&mps->lock);
+ mps->busy = 1;
+ while (!list_empty(&mps->queue)) {
+ struct spi_message *m;
+ struct spi_device *spi;
+ struct spi_transfer *t = NULL;
+ unsigned cs_change;
+ int status;
+
+ m = container_of(mps->queue.next, struct spi_message, queue);
+ list_del_init(&m->queue);
+ spin_unlock_irq(&mps->lock);
+
+ spi = m->spi;
+ cs_change = 1;
+ status = 0;
+ list_for_each_entry (t, &m->transfers, transfer_list) {
+ if (t->bits_per_word || t->speed_hz) {
+ status = mpc52xx_psc_spi_transfer_setup(spi, t);
+ if (status < 0)
+ break;
+ }
+
+ if (cs_change)
+ mpc52xx_psc_spi_activate_cs(spi);
+ cs_change = t->cs_change;
+
+ status = mpc52xx_psc_spi_transfer_rxtx(spi, t);
+ if (status)
+ break;
+ m->actual_length += t->len;
+
+ if (t->delay_usecs)
+ udelay(t->delay_usecs);
+
+ if (cs_change)
+ mpc52xx_psc_spi_deactivate_cs(spi);
+ }
+
+ m->status = status;
+ m->complete(m->context);
+
+ if (status || !cs_change)
+ mpc52xx_psc_spi_deactivate_cs(spi);
+
+ mpc52xx_psc_spi_transfer_setup(spi, NULL);
+
+ spin_lock_irq(&mps->lock);
+ }
+ mps->busy = 0;
+ spin_unlock_irq(&mps->lock);
+}
+
+static int mpc52xx_psc_spi_setup(struct spi_device *spi)
+{
+ struct mpc52xx_psc_spi *mps = spi_master_get_devdata(spi->master);
+ struct mpc52xx_psc_spi_cs *cs = spi->controller_state;
+ unsigned long flags;
+
+ if (spi->bits_per_word%8)
+ return -EINVAL;
+
+ if (!cs) {
+ cs = kzalloc(sizeof *cs, GFP_KERNEL);
+ if (!cs)
+ return -ENOMEM;
+ spi->controller_state = cs;
+ }
+
+ cs->bits_per_word = spi->bits_per_word;
+ cs->speed_hz = spi->max_speed_hz;
+
+ spin_lock_irqsave(&mps->lock, flags);
+ if (!mps->busy)
+ mpc52xx_psc_spi_deactivate_cs(spi);
+ spin_unlock_irqrestore(&mps->lock, flags);
+
+ return 0;
+}
+
+static int mpc52xx_psc_spi_transfer(struct spi_device *spi,
+ struct spi_message *m)
+{
+ struct mpc52xx_psc_spi *mps = spi_master_get_devdata(spi->master);
+ unsigned long flags;
+
+ m->actual_length = 0;
+ m->status = -EINPROGRESS;
+
+ spin_lock_irqsave(&mps->lock, flags);
+ list_add_tail(&m->queue, &mps->queue);
+ queue_work(mps->workqueue, &mps->work);
+ spin_unlock_irqrestore(&mps->lock, flags);
+
+ return 0;
+}
+
+static void mpc52xx_psc_spi_cleanup(struct spi_device *spi)
+{
+ kfree(spi->controller_state);
+}
+
+static int mpc52xx_psc_spi_port_config(int psc_id, struct mpc52xx_psc_spi *mps)
+{
+ struct mpc52xx_cdm __iomem *cdm;
+ struct mpc52xx_gpio __iomem *gpio;
+ struct mpc52xx_psc __iomem *psc = mps->psc;
+ u32 ul;
+ u32 mclken_div;
+ int ret = 0;
+
+#if defined(CONFIG_PPC_MERGE)
+ cdm = mpc52xx_find_and_map("mpc52xx-cdm");
+ gpio = mpc52xx_find_and_map("mpc52xx-gpio");
+#else
+ cdm = ioremap(MPC52xx_PA(MPC52xx_CDM_OFFSET), MPC52xx_CDM_SIZE);
+ gpio = ioremap(MPC52xx_PA(MPC52xx_GPIO_OFFSET), MPC52xx_GPIO_SIZE);
+#endif
+ if (!cdm || !gpio) {
+ printk(KERN_ERR "Error mapping CDM/GPIO\n");
+ ret = -EFAULT;
+ goto unmap_regs;
+ }
+
+ /* default sysclk is 512MHz */
+ mclken_div = 0x8000 |
+ (((mps->sysclk ? mps->sysclk : 512000000) / MCLK) & 0x1FF);
+
+ switch (psc_id) {
+ case 1:
+ ul = in_be32(&gpio->port_config);
+ ul &= 0xFFFFFFF8;
+ ul |= 0x00000006;
+ out_be32(&gpio->port_config, ul);
+ out_be16(&cdm->mclken_div_psc1, mclken_div);
+ ul = in_be32(&cdm->clk_enables);
+ ul |= 0x00000020;
+ out_be32(&cdm->clk_enables, ul);
+ break;
+ case 2:
+ ul = in_be32(&gpio->port_config);
+ ul &= 0xFFFFFF8F;
+ ul |= 0x00000060;
+ out_be32(&gpio->port_config, ul);
+ out_be16(&cdm->mclken_div_psc2, mclken_div);
+ ul = in_be32(&cdm->clk_enables);
+ ul |= 0x00000040;
+ out_be32(&cdm->clk_enables, ul);
+ break;
+ case 3:
+ ul = in_be32(&gpio->port_config);
+ ul &= 0xFFFFF0FF;
+ ul |= 0x00000600;
+ out_be32(&gpio->port_config, ul);
+ out_be16(&cdm->mclken_div_psc3, mclken_div);
+ ul = in_be32(&cdm->clk_enables);
+ ul |= 0x00000080;
+ out_be32(&cdm->clk_enables, ul);
+ break;
+ case 6:
+ ul = in_be32(&gpio->port_config);
+ ul &= 0xFF8FFFFF;
+ ul |= 0x00700000;
+ out_be32(&gpio->port_config, ul);
+ out_be16(&cdm->mclken_div_psc6, mclken_div);
+ ul = in_be32(&cdm->clk_enables);
+ ul |= 0x00000010;
+ out_be32(&cdm->clk_enables, ul);
+ break;
+ default:
+ ret = -EINVAL;
+ goto unmap_regs;
+ }
+
+ /* Reset the PSC into a known state */
+ out_8(&psc->command, MPC52xx_PSC_RST_RX);
+ out_8(&psc->command, MPC52xx_PSC_RST_TX);
+ out_8(&psc->command, MPC52xx_PSC_TX_DISABLE | MPC52xx_PSC_RX_DISABLE);
+
+ /* Disable interrupts, interrupts are based on alarm level */
+ out_be16(&psc->mpc52xx_psc_imr, 0);
+ out_8(&psc->command, MPC52xx_PSC_SEL_MODE_REG_1);
+ out_8(&psc->rfcntl, 0);
+ out_8(&psc->mode, MPC52xx_PSC_MODE_FFULL);
+
+ /* Configure 8bit codec mode as a SPI master and use EOF flags */
+ /* SICR_SIM_CODEC8|SICR_GENCLK|SICR_SPI|SICR_MSTR|SICR_USEEOF */
+ out_be32(&psc->sicr, 0x0180C800);
+ out_be16(&psc->ccr, 0x070F); /* by default SPI Clk 1MHz */
+
+ /* Set 2ms DTL delay */
+ out_8(&psc->ctur, 0x00);
+ out_8(&psc->ctlr, 0x84);
+
+ mps->bits_per_word = 8;
+
+unmap_regs:
+ if (cdm)
+ iounmap(cdm);
+ if (gpio)
+ iounmap(gpio);
+
+ return ret;
+}
+
+static irqreturn_t mpc52xx_psc_spi_isr(int irq, void *dev_id)
+{
+ struct mpc52xx_psc_spi *mps = (struct mpc52xx_psc_spi *)dev_id;
+ struct mpc52xx_psc __iomem *psc = mps->psc;
+
+ /* disable interrupt and wake up the work queue */
+ if (in_be16(&psc->mpc52xx_psc_isr) & MPC52xx_PSC_IMR_RXRDY) {
+ out_be16(&psc->mpc52xx_psc_imr, 0);
+ complete(&mps->done);
+ return IRQ_HANDLED;
+ }
+ return IRQ_NONE;
+}
+
+/* bus_num is used only for the case dev->platform_data == NULL */
+static int __init mpc52xx_psc_spi_do_probe(struct device *dev, u32 regaddr,
+ u32 size, unsigned int irq, s16 bus_num)
+{
+ struct fsl_spi_platform_data *pdata = dev->platform_data;
+ struct mpc52xx_psc_spi *mps;
+ struct spi_master *master;
+ int ret;
+
+ if (pdata == NULL)
+ return -ENODEV;
+
+ master = spi_alloc_master(dev, sizeof *mps);
+ if (master == NULL)
+ return -ENOMEM;
+
+ dev_set_drvdata(dev, master);
+ mps = spi_master_get_devdata(master);
+
+ mps->irq = irq;
+ if (pdata == NULL) {
+ dev_warn(dev, "probe called without platform data, no "
+ "(de)activate_cs function will be called\n");
+ mps->activate_cs = NULL;
+ mps->deactivate_cs = NULL;
+ mps->sysclk = 0;
+ master->bus_num = bus_num;
+ master->num_chipselect = 255;
+ } else {
+ mps->activate_cs = pdata->activate_cs;
+ mps->deactivate_cs = pdata->deactivate_cs;
+ mps->sysclk = pdata->sysclk;
+ master->bus_num = pdata->bus_num;
+ master->num_chipselect = pdata->max_chipselect;
+ }
+ master->setup = mpc52xx_psc_spi_setup;
+ master->transfer = mpc52xx_psc_spi_transfer;
+ master->cleanup = mpc52xx_psc_spi_cleanup;
+
+ mps->psc = ioremap(regaddr, size);
+ if (!mps->psc) {
+ dev_err(dev, "could not ioremap I/O port range\n");
+ ret = -EFAULT;
+ goto free_master;
+ }
+
+ ret = request_irq(mps->irq, mpc52xx_psc_spi_isr, 0, "mpc52xx-psc-spi",
+ mps);
+ if (ret)
+ goto free_master;
+
+ ret = mpc52xx_psc_spi_port_config(master->bus_num, mps);
+ if (ret < 0)
+ goto free_irq;
+
+ spin_lock_init(&mps->lock);
+ init_completion(&mps->done);
+ INIT_WORK(&mps->work, mpc52xx_psc_spi_work);
+ INIT_LIST_HEAD(&mps->queue);
+
+ mps->workqueue = create_singlethread_workqueue(
+ master->cdev.dev->bus_id);
+ if (mps->workqueue == NULL) {
+ ret = -EBUSY;
+ goto free_irq;
+ }
+
+ ret = spi_register_master(master);
+ if (ret < 0)
+ goto unreg_master;
+
+ return ret;
+
+unreg_master:
+ destroy_workqueue(mps->workqueue);
+free_irq:
+ free_irq(mps->irq, mps);
+free_master:
+ if (mps->psc)
+ iounmap(mps->psc);
+ spi_master_put(master);
+
+ return ret;
+}
+
+static int __exit mpc52xx_psc_spi_do_remove(struct device *dev)
+{
+ struct spi_master *master = dev_get_drvdata(dev);
+ struct mpc52xx_psc_spi *mps = spi_master_get_devdata(master);
+
+ flush_workqueue(mps->workqueue);
+ destroy_workqueue(mps->workqueue);
+ spi_unregister_master(master);
+ free_irq(mps->irq, mps);
+ if (mps->psc)
+ iounmap(mps->psc);
+
+ return 0;
+}
+
+#if !defined(CONFIG_PPC_MERGE)
+static int __init mpc52xx_psc_spi_probe(struct platform_device *dev)
+{
+ switch(dev->id) {
+ case 1:
+ case 2:
+ case 3:
+ case 6:
+ return mpc52xx_psc_spi_do_probe(&dev->dev,
+ MPC52xx_PA(MPC52xx_PSCx_OFFSET(dev->id)),
+ MPC52xx_PSC_SIZE, platform_get_irq(dev, 0), dev->id);
+ default:
+ return -EINVAL;
+ }
+}
+
+static int __exit mpc52xx_psc_spi_remove(struct platform_device *dev)
+{
+ return mpc52xx_psc_spi_do_remove(&dev->dev);
+}
+
+static struct platform_driver mpc52xx_psc_spi_platform_driver = {
+ .remove = __exit_p(mpc52xx_psc_spi_remove),
+ .driver = {
+ .name = "mpc52xx-psc-spi",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init mpc52xx_psc_spi_init(void)
+{
+ return platform_driver_probe(&mpc52xx_psc_spi_platform_driver,
+ mpc52xx_psc_spi_probe);
+}
+module_init(mpc52xx_psc_spi_init);
+
+static void __exit mpc52xx_psc_spi_exit(void)
+{
+ platform_driver_unregister(&mpc52xx_psc_spi_platform_driver);
+}
+module_exit(mpc52xx_psc_spi_exit);
+
+#else /* defined(CONFIG_PPC_MERGE) */
+
+static int __init mpc52xx_psc_spi_of_probe(struct of_device *op,
+ const struct of_device_id *match)
+{
+ const u32 *regaddr_p;
+ u64 regaddr64, size64;
+ s16 id = -1;
+
+ regaddr_p = of_get_address(op->node, 0, &size64, NULL);
+ if (!regaddr_p) {
+ printk(KERN_ERR "Invalid PSC address\n");
+ return -EINVAL;
+ }
+ regaddr64 = of_translate_address(op->node, regaddr_p);
+
+ if (op->dev.platform_data == NULL) {
+ struct device_node *np;
+ int i = 0;
+
+ for_each_node_by_type(np, "spi") {
+ if (of_find_device_by_node(np) == op) {
+ id = i;
+ break;
+ }
+ i++;
+ }
+ }
+
+ return mpc52xx_psc_spi_do_probe(&op->dev, (u32)regaddr64, (u32)size64,
+ irq_of_parse_and_map(op->node, 0), id);
+}
+
+static int __exit mpc52xx_psc_spi_of_remove(struct of_device *op)
+{
+ return mpc52xx_psc_spi_do_remove(&op->dev);
+}
+
+static struct of_device_id mpc52xx_psc_spi_of_match[] = {
+ { .type = "spi", .compatible = "mpc52xx-psc-spi", },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, mpc52xx_psc_spi_of_match);
+
+static struct of_platform_driver mpc52xx_psc_spi_of_driver = {
+ .owner = THIS_MODULE,
+ .name = "mpc52xx-psc-spi",
+ .match_table = mpc52xx_psc_spi_of_match,
+ .probe = mpc52xx_psc_spi_of_probe,
+ .remove = __exit_p(mpc52xx_psc_spi_of_remove),
+ .driver = {
+ .name = "mpc52xx-psc-spi",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init mpc52xx_psc_spi_init(void)
+{
+ return of_register_platform_driver(&mpc52xx_psc_spi_of_driver);
+}
+module_init(mpc52xx_psc_spi_init);
+
+static void __exit mpc52xx_psc_spi_exit(void)
+{
+ of_unregister_platform_driver(&mpc52xx_psc_spi_of_driver);
+}
+module_exit(mpc52xx_psc_spi_exit);
+
+#endif /* defined(CONFIG_PPC_MERGE) */
+
+MODULE_AUTHOR("Dragos Carp");
+MODULE_DESCRIPTION("MPC52xx PSC SPI Driver");
+MODULE_LICENSE("GPL");
working with S1D13806). Product specs at
<http://www.erd.epson.com/vdc/html/legacy_13xxx.htm>
+config FB_ATMEL
+ tristate "AT91/AT32 LCD Controller support"
+ depends on FB && (ARCH_AT91SAM9261 || ARCH_AT91SAM9263 || AVR32)
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
+ help
+ This enables support for the AT91/AT32 LCD Controller.
+
+config FB_INTSRAM
+ bool "Frame Buffer in internal SRAM"
+ depends on FB_ATMEL && ARCH_AT91SAM9261
+ help
+ Say Y if you want to map Frame Buffer in internal SRAM. Say N if you want
+ to let frame buffer in external SDRAM.
+
config FB_NVIDIA
tristate "nVidia Framebuffer Support"
depends on FB && PCI
independently validate video mode parameters, you should say Y
here.
+config FB_NVIDIA_DEBUG
+ bool "Lots of debug output"
+ depends on FB_NVIDIA
+ default n
+ help
+ Say Y here if you want the nVidia driver to output all sorts
+ of debugging information to provide to the maintainer when
+ something goes wrong.
+
config FB_NVIDIA_BACKLIGHT
bool "Support for backlight control"
depends on FB_NVIDIA
here.
config FB_RIVA_DEBUG
- bool "Lots of debug output from Riva(nVidia) driver"
+ bool "Lots of debug output"
depends on FB_RIVA
default n
help
and ICS 5342 RAMDAC.
config FB_PM3
- tristate "Permedia3 support"
- depends on FB && PCI && BROKEN
+ tristate "Permedia3 support (EXPERIMENTAL)"
+ depends on FB && PCI && EXPERIMENTAL
+ select FB_CFB_FILLRECT
+ select FB_CFB_COPYAREA
+ select FB_CFB_IMAGEBLIT
help
This is the frame buffer device driver for the 3DLabs Permedia3
chipset, used in Formac ProFormance III, 3DLabs Oxygen VX1 &
obj-$(CONFIG_FB_SA1100) += sa1100fb.o
obj-$(CONFIG_FB_HIT) += hitfb.o
obj-$(CONFIG_FB_EPSON1355) += epson1355fb.o
+obj-$(CONFIG_FB_ATMEL) += atmel_lcdfb.o
obj-$(CONFIG_FB_PVR2) += pvr2fb.o
obj-$(CONFIG_FB_VOODOO1) += sstfb.o
obj-$(CONFIG_FB_ARMCLCD) += amba-clcd.o
--- /dev/null
+/*
+ * Driver for AT91/AT32 LCD Controller
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/platform_device.h>
+#include <linux/dma-mapping.h>
+#include <linux/interrupt.h>
+#include <linux/clk.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+
+#include <asm/arch/board.h>
+#include <asm/arch/cpu.h>
+#include <asm/arch/gpio.h>
+
+#include <video/atmel_lcdc.h>
+
+#define lcdc_readl(sinfo, reg) __raw_readl((sinfo)->mmio+(reg))
+#define lcdc_writel(sinfo, reg, val) __raw_writel((val), (sinfo)->mmio+(reg))
+
+/* configurable parameters */
+#define ATMEL_LCDC_CVAL_DEFAULT 0xc8
+#define ATMEL_LCDC_DMA_BURST_LEN 8
+
+#if defined(CONFIG_ARCH_AT91SAM9263)
+#define ATMEL_LCDC_FIFO_SIZE 2048
+#else
+#define ATMEL_LCDC_FIFO_SIZE 512
+#endif
+
+#if defined(CONFIG_ARCH_AT91)
+#define ATMEL_LCDFB_FBINFO_DEFAULT FBINFO_DEFAULT
+
+static inline void atmel_lcdfb_update_dma2d(struct atmel_lcdfb_info *sinfo,
+ struct fb_var_screeninfo *var)
+{
+
+}
+#elif defined(CONFIG_AVR32)
+#define ATMEL_LCDFB_FBINFO_DEFAULT (FBINFO_DEFAULT \
+ | FBINFO_PARTIAL_PAN_OK \
+ | FBINFO_HWACCEL_XPAN \
+ | FBINFO_HWACCEL_YPAN)
+
+static void atmel_lcdfb_update_dma2d(struct atmel_lcdfb_info *sinfo,
+ struct fb_var_screeninfo *var)
+{
+ u32 dma2dcfg;
+ u32 pixeloff;
+
+ pixeloff = (var->xoffset * var->bits_per_pixel) & 0x1f;
+
+ dma2dcfg = ((var->xres_virtual - var->xres) * var->bits_per_pixel) / 8;
+ dma2dcfg |= pixeloff << ATMEL_LCDC_PIXELOFF_OFFSET;
+ lcdc_writel(sinfo, ATMEL_LCDC_DMA2DCFG, dma2dcfg);
+
+ /* Update configuration */
+ lcdc_writel(sinfo, ATMEL_LCDC_DMACON,
+ lcdc_readl(sinfo, ATMEL_LCDC_DMACON)
+ | ATMEL_LCDC_DMAUPDT);
+}
+#endif
+
+
+static struct fb_fix_screeninfo atmel_lcdfb_fix __initdata = {
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_TRUECOLOR,
+ .xpanstep = 0,
+ .ypanstep = 0,
+ .ywrapstep = 0,
+ .accel = FB_ACCEL_NONE,
+};
+
+
+static void atmel_lcdfb_update_dma(struct fb_info *info,
+ struct fb_var_screeninfo *var)
+{
+ struct atmel_lcdfb_info *sinfo = info->par;
+ struct fb_fix_screeninfo *fix = &info->fix;
+ unsigned long dma_addr;
+
+ dma_addr = (fix->smem_start + var->yoffset * fix->line_length
+ + var->xoffset * var->bits_per_pixel / 8);
+
+ dma_addr &= ~3UL;
+
+ /* Set framebuffer DMA base address and pixel offset */
+ lcdc_writel(sinfo, ATMEL_LCDC_DMABADDR1, dma_addr);
+
+ atmel_lcdfb_update_dma2d(sinfo, var);
+}
+
+static inline void atmel_lcdfb_free_video_memory(struct atmel_lcdfb_info *sinfo)
+{
+ struct fb_info *info = sinfo->info;
+
+ dma_free_writecombine(info->device, info->fix.smem_len,
+ info->screen_base, info->fix.smem_start);
+}
+
+/**
+ * atmel_lcdfb_alloc_video_memory - Allocate framebuffer memory
+ * @sinfo: the frame buffer to allocate memory for
+ */
+static int atmel_lcdfb_alloc_video_memory(struct atmel_lcdfb_info *sinfo)
+{
+ struct fb_info *info = sinfo->info;
+ struct fb_var_screeninfo *var = &info->var;
+
+ info->fix.smem_len = (var->xres_virtual * var->yres_virtual
+ * ((var->bits_per_pixel + 7) / 8));
+
+ info->screen_base = dma_alloc_writecombine(info->device, info->fix.smem_len,
+ (dma_addr_t *)&info->fix.smem_start, GFP_KERNEL);
+
+ if (!info->screen_base) {
+ return -ENOMEM;
+ }
+
+ return 0;
+}
+
+/**
+ * atmel_lcdfb_check_var - Validates a var passed in.
+ * @var: frame buffer variable screen structure
+ * @info: frame buffer structure that represents a single frame buffer
+ *
+ * Checks to see if the hardware supports the state requested by
+ * var passed in. This function does not alter the hardware
+ * state!!! This means the data stored in struct fb_info and
+ * struct atmel_lcdfb_info do not change. This includes the var
+ * inside of struct fb_info. Do NOT change these. This function
+ * can be called on its own if we intent to only test a mode and
+ * not actually set it. The stuff in modedb.c is a example of
+ * this. If the var passed in is slightly off by what the
+ * hardware can support then we alter the var PASSED in to what
+ * we can do. If the hardware doesn't support mode change a
+ * -EINVAL will be returned by the upper layers. You don't need
+ * to implement this function then. If you hardware doesn't
+ * support changing the resolution then this function is not
+ * needed. In this case the driver would just provide a var that
+ * represents the static state the screen is in.
+ *
+ * Returns negative errno on error, or zero on success.
+ */
+static int atmel_lcdfb_check_var(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ struct device *dev = info->device;
+ struct atmel_lcdfb_info *sinfo = info->par;
+ unsigned long clk_value_khz;
+
+ clk_value_khz = clk_get_rate(sinfo->lcdc_clk) / 1000;
+
+ dev_dbg(dev, "%s:\n", __func__);
+ dev_dbg(dev, " resolution: %ux%u\n", var->xres, var->yres);
+ dev_dbg(dev, " pixclk: %lu KHz\n", PICOS2KHZ(var->pixclock));
+ dev_dbg(dev, " bpp: %u\n", var->bits_per_pixel);
+ dev_dbg(dev, " clk: %lu KHz\n", clk_value_khz);
+
+ if ((PICOS2KHZ(var->pixclock) * var->bits_per_pixel / 8) > clk_value_khz) {
+ dev_err(dev, "%lu KHz pixel clock is too fast\n", PICOS2KHZ(var->pixclock));
+ return -EINVAL;
+ }
+
+ /* Force same alignment for each line */
+ var->xres = (var->xres + 3) & ~3UL;
+ var->xres_virtual = (var->xres_virtual + 3) & ~3UL;
+
+ var->red.msb_right = var->green.msb_right = var->blue.msb_right = 0;
+ var->transp.msb_right = 0;
+ var->transp.offset = var->transp.length = 0;
+ var->xoffset = var->yoffset = 0;
+
+ switch (var->bits_per_pixel) {
+ case 2:
+ case 4:
+ case 8:
+ var->red.offset = var->green.offset = var->blue.offset = 0;
+ var->red.length = var->green.length = var->blue.length
+ = var->bits_per_pixel;
+ break;
+ case 15:
+ case 16:
+ var->red.offset = 0;
+ var->green.offset = 5;
+ var->blue.offset = 10;
+ var->red.length = var->green.length = var->blue.length = 5;
+ break;
+ case 24:
+ case 32:
+ var->red.offset = 0;
+ var->green.offset = 8;
+ var->blue.offset = 16;
+ var->red.length = var->green.length = var->blue.length = 8;
+ break;
+ default:
+ dev_err(dev, "color depth %d not supported\n",
+ var->bits_per_pixel);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/**
+ * atmel_lcdfb_set_par - Alters the hardware state.
+ * @info: frame buffer structure that represents a single frame buffer
+ *
+ * Using the fb_var_screeninfo in fb_info we set the resolution
+ * of the this particular framebuffer. This function alters the
+ * par AND the fb_fix_screeninfo stored in fb_info. It doesn't
+ * not alter var in fb_info since we are using that data. This
+ * means we depend on the data in var inside fb_info to be
+ * supported by the hardware. atmel_lcdfb_check_var is always called
+ * before atmel_lcdfb_set_par to ensure this. Again if you can't
+ * change the resolution you don't need this function.
+ *
+ */
+static int atmel_lcdfb_set_par(struct fb_info *info)
+{
+ struct atmel_lcdfb_info *sinfo = info->par;
+ unsigned long value;
+ unsigned long clk_value_khz;
+
+ dev_dbg(info->device, "%s:\n", __func__);
+ dev_dbg(info->device, " * resolution: %ux%u (%ux%u virtual)\n",
+ info->var.xres, info->var.yres,
+ info->var.xres_virtual, info->var.yres_virtual);
+
+ /* Turn off the LCD controller and the DMA controller */
+ lcdc_writel(sinfo, ATMEL_LCDC_PWRCON, sinfo->guard_time << ATMEL_LCDC_GUARDT_OFFSET);
+
+ lcdc_writel(sinfo, ATMEL_LCDC_DMACON, 0);
+
+ if (info->var.bits_per_pixel <= 8)
+ info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
+ else
+ info->fix.visual = FB_VISUAL_TRUECOLOR;
+
+ info->fix.line_length = info->var.xres_virtual * (info->var.bits_per_pixel / 8);
+
+ /* Re-initialize the DMA engine... */
+ dev_dbg(info->device, " * update DMA engine\n");
+ atmel_lcdfb_update_dma(info, &info->var);
+
+ /* ...set frame size and burst length = 8 words (?) */
+ value = (info->var.yres * info->var.xres * info->var.bits_per_pixel) / 32;
+ value |= ((ATMEL_LCDC_DMA_BURST_LEN - 1) << ATMEL_LCDC_BLENGTH_OFFSET);
+ lcdc_writel(sinfo, ATMEL_LCDC_DMAFRMCFG, value);
+
+ /* Now, the LCDC core... */
+
+ /* Set pixel clock */
+ clk_value_khz = clk_get_rate(sinfo->lcdc_clk) / 1000;
+
+ value = clk_value_khz / PICOS2KHZ(info->var.pixclock);
+
+ if (clk_value_khz % PICOS2KHZ(info->var.pixclock))
+ value++;
+
+ value = (value / 2) - 1;
+
+ if (value <= 0) {
+ dev_notice(info->device, "Bypassing pixel clock divider\n");
+ lcdc_writel(sinfo, ATMEL_LCDC_LCDCON1, ATMEL_LCDC_BYPASS);
+ } else
+ lcdc_writel(sinfo, ATMEL_LCDC_LCDCON1, value << ATMEL_LCDC_CLKVAL_OFFSET);
+
+ /* Initialize control register 2 */
+ value = sinfo->default_lcdcon2;
+
+ if (!(info->var.sync & FB_SYNC_HOR_HIGH_ACT))
+ value |= ATMEL_LCDC_INVLINE_INVERTED;
+ if (!(info->var.sync & FB_SYNC_VERT_HIGH_ACT))
+ value |= ATMEL_LCDC_INVFRAME_INVERTED;
+
+ switch (info->var.bits_per_pixel) {
+ case 1: value |= ATMEL_LCDC_PIXELSIZE_1; break;
+ case 2: value |= ATMEL_LCDC_PIXELSIZE_2; break;
+ case 4: value |= ATMEL_LCDC_PIXELSIZE_4; break;
+ case 8: value |= ATMEL_LCDC_PIXELSIZE_8; break;
+ case 15: /* fall through */
+ case 16: value |= ATMEL_LCDC_PIXELSIZE_16; break;
+ case 24: value |= ATMEL_LCDC_PIXELSIZE_24; break;
+ case 32: value |= ATMEL_LCDC_PIXELSIZE_32; break;
+ default: BUG(); break;
+ }
+ dev_dbg(info->device, " * LCDCON2 = %08lx\n", value);
+ lcdc_writel(sinfo, ATMEL_LCDC_LCDCON2, value);
+
+ /* Vertical timing */
+ value = (info->var.vsync_len - 1) << ATMEL_LCDC_VPW_OFFSET;
+ value |= info->var.upper_margin << ATMEL_LCDC_VBP_OFFSET;
+ value |= info->var.lower_margin;
+ dev_dbg(info->device, " * LCDTIM1 = %08lx\n", value);
+ lcdc_writel(sinfo, ATMEL_LCDC_TIM1, value);
+
+ /* Horizontal timing */
+ value = (info->var.right_margin - 1) << ATMEL_LCDC_HFP_OFFSET;
+ value |= (info->var.hsync_len - 1) << ATMEL_LCDC_HPW_OFFSET;
+ value |= (info->var.left_margin - 1);
+ dev_dbg(info->device, " * LCDTIM2 = %08lx\n", value);
+ lcdc_writel(sinfo, ATMEL_LCDC_TIM2, value);
+
+ /* Display size */
+ value = (info->var.xres - 1) << ATMEL_LCDC_HOZVAL_OFFSET;
+ value |= info->var.yres - 1;
+ lcdc_writel(sinfo, ATMEL_LCDC_LCDFRMCFG, value);
+
+ /* FIFO Threshold: Use formula from data sheet */
+ value = ATMEL_LCDC_FIFO_SIZE - (2 * ATMEL_LCDC_DMA_BURST_LEN + 3);
+ lcdc_writel(sinfo, ATMEL_LCDC_FIFO, value);
+
+ /* Toggle LCD_MODE every frame */
+ lcdc_writel(sinfo, ATMEL_LCDC_MVAL, 0);
+
+ /* Disable all interrupts */
+ lcdc_writel(sinfo, ATMEL_LCDC_IDR, ~0UL);
+
+ /* Set contrast */
+ value = ATMEL_LCDC_PS_DIV8 | ATMEL_LCDC_POL_POSITIVE | ATMEL_LCDC_ENA_PWMENABLE;
+ lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_CTR, value);
+ lcdc_writel(sinfo, ATMEL_LCDC_CONTRAST_VAL, ATMEL_LCDC_CVAL_DEFAULT);
+ /* ...wait for DMA engine to become idle... */
+ while (lcdc_readl(sinfo, ATMEL_LCDC_DMACON) & ATMEL_LCDC_DMABUSY)
+ msleep(10);
+
+ dev_dbg(info->device, " * re-enable DMA engine\n");
+ /* ...and enable it with updated configuration */
+ lcdc_writel(sinfo, ATMEL_LCDC_DMACON, sinfo->default_dmacon);
+
+ dev_dbg(info->device, " * re-enable LCDC core\n");
+ lcdc_writel(sinfo, ATMEL_LCDC_PWRCON,
+ (sinfo->guard_time << ATMEL_LCDC_GUARDT_OFFSET) | ATMEL_LCDC_PWR);
+
+ dev_dbg(info->device, " * DONE\n");
+
+ return 0;
+}
+
+static inline unsigned int chan_to_field(unsigned int chan, const struct fb_bitfield *bf)
+{
+ chan &= 0xffff;
+ chan >>= 16 - bf->length;
+ return chan << bf->offset;
+}
+
+/**
+ * atmel_lcdfb_setcolreg - Optional function. Sets a color register.
+ * @regno: Which register in the CLUT we are programming
+ * @red: The red value which can be up to 16 bits wide
+ * @green: The green value which can be up to 16 bits wide
+ * @blue: The blue value which can be up to 16 bits wide.
+ * @transp: If supported the alpha value which can be up to 16 bits wide.
+ * @info: frame buffer info structure
+ *
+ * Set a single color register. The values supplied have a 16 bit
+ * magnitude which needs to be scaled in this function for the hardware.
+ * Things to take into consideration are how many color registers, if
+ * any, are supported with the current color visual. With truecolor mode
+ * no color palettes are supported. Here a psuedo palette is created
+ * which we store the value in pseudo_palette in struct fb_info. For
+ * pseudocolor mode we have a limited color palette. To deal with this
+ * we can program what color is displayed for a particular pixel value.
+ * DirectColor is similar in that we can program each color field. If
+ * we have a static colormap we don't need to implement this function.
+ *
+ * Returns negative errno on error, or zero on success. In an
+ * ideal world, this would have been the case, but as it turns
+ * out, the other drivers return 1 on failure, so that's what
+ * we're going to do.
+ */
+static int atmel_lcdfb_setcolreg(unsigned int regno, unsigned int red,
+ unsigned int green, unsigned int blue,
+ unsigned int transp, struct fb_info *info)
+{
+ struct atmel_lcdfb_info *sinfo = info->par;
+ unsigned int val;
+ u32 *pal;
+ int ret = 1;
+
+ if (info->var.grayscale)
+ red = green = blue = (19595 * red + 38470 * green
+ + 7471 * blue) >> 16;
+
+ switch (info->fix.visual) {
+ case FB_VISUAL_TRUECOLOR:
+ if (regno < 16) {
+ pal = info->pseudo_palette;
+
+ val = chan_to_field(red, &info->var.red);
+ val |= chan_to_field(green, &info->var.green);
+ val |= chan_to_field(blue, &info->var.blue);
+
+ pal[regno] = val;
+ ret = 0;
+ }
+ break;
+
+ case FB_VISUAL_PSEUDOCOLOR:
+ if (regno < 256) {
+ val = ((red >> 11) & 0x001f);
+ val |= ((green >> 6) & 0x03e0);
+ val |= ((blue >> 1) & 0x7c00);
+
+ /*
+ * TODO: intensity bit. Maybe something like
+ * ~(red[10] ^ green[10] ^ blue[10]) & 1
+ */
+
+ lcdc_writel(sinfo, ATMEL_LCDC_LUT(regno), val);
+ ret = 0;
+ }
+ break;
+ }
+
+ return ret;
+}
+
+static int atmel_lcdfb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
+{
+ dev_dbg(info->device, "%s\n", __func__);
+
+ atmel_lcdfb_update_dma(info, var);
+
+ return 0;
+}
+
+static struct fb_ops atmel_lcdfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = atmel_lcdfb_check_var,
+ .fb_set_par = atmel_lcdfb_set_par,
+ .fb_setcolreg = atmel_lcdfb_setcolreg,
+ .fb_pan_display = atmel_lcdfb_pan_display,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+};
+
+static irqreturn_t atmel_lcdfb_interrupt(int irq, void *dev_id)
+{
+ struct fb_info *info = dev_id;
+ struct atmel_lcdfb_info *sinfo = info->par;
+ u32 status;
+
+ status = lcdc_readl(sinfo, ATMEL_LCDC_ISR);
+ lcdc_writel(sinfo, ATMEL_LCDC_IDR, status);
+ return IRQ_HANDLED;
+}
+
+static int __init atmel_lcdfb_init_fbinfo(struct atmel_lcdfb_info *sinfo)
+{
+ struct fb_info *info = sinfo->info;
+ int ret = 0;
+
+ memset_io(info->screen_base, 0, info->fix.smem_len);
+ info->var.activate |= FB_ACTIVATE_FORCE | FB_ACTIVATE_NOW;
+
+ dev_info(info->device,
+ "%luKiB frame buffer at %08lx (mapped at %p)\n",
+ (unsigned long)info->fix.smem_len / 1024,
+ (unsigned long)info->fix.smem_start,
+ info->screen_base);
+
+ /* Allocate colormap */
+ ret = fb_alloc_cmap(&info->cmap, 256, 0);
+ if (ret < 0)
+ dev_err(info->device, "Alloc color map failed\n");
+
+ return ret;
+}
+
+static void atmel_lcdfb_start_clock(struct atmel_lcdfb_info *sinfo)
+{
+ if (sinfo->bus_clk)
+ clk_enable(sinfo->bus_clk);
+ clk_enable(sinfo->lcdc_clk);
+}
+
+static void atmel_lcdfb_stop_clock(struct atmel_lcdfb_info *sinfo)
+{
+ if (sinfo->bus_clk)
+ clk_disable(sinfo->bus_clk);
+ clk_disable(sinfo->lcdc_clk);
+}
+
+
+static int __init atmel_lcdfb_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct fb_info *info;
+ struct atmel_lcdfb_info *sinfo;
+ struct atmel_lcdfb_info *pdata_sinfo;
+ struct resource *regs = NULL;
+ struct resource *map = NULL;
+ int ret;
+
+ dev_dbg(dev, "%s BEGIN\n", __func__);
+
+ ret = -ENOMEM;
+ info = framebuffer_alloc(sizeof(struct atmel_lcdfb_info), dev);
+ if (!info) {
+ dev_err(dev, "cannot allocate memory\n");
+ goto out;
+ }
+
+ sinfo = info->par;
+
+ if (dev->platform_data) {
+ pdata_sinfo = (struct atmel_lcdfb_info *)dev->platform_data;
+ sinfo->default_bpp = pdata_sinfo->default_bpp;
+ sinfo->default_dmacon = pdata_sinfo->default_dmacon;
+ sinfo->default_lcdcon2 = pdata_sinfo->default_lcdcon2;
+ sinfo->default_monspecs = pdata_sinfo->default_monspecs;
+ sinfo->atmel_lcdfb_power_control = pdata_sinfo->atmel_lcdfb_power_control;
+ sinfo->guard_time = pdata_sinfo->guard_time;
+ } else {
+ dev_err(dev, "cannot get default configuration\n");
+ goto free_info;
+ }
+ sinfo->info = info;
+ sinfo->pdev = pdev;
+
+ strcpy(info->fix.id, sinfo->pdev->name);
+ info->flags = ATMEL_LCDFB_FBINFO_DEFAULT;
+ info->pseudo_palette = sinfo->pseudo_palette;
+ info->fbops = &atmel_lcdfb_ops;
+
+ memcpy(&info->monspecs, sinfo->default_monspecs, sizeof(info->monspecs));
+ info->fix = atmel_lcdfb_fix;
+
+ /* Enable LCDC Clocks */
+ if (cpu_is_at91sam9261() || cpu_is_at32ap7000()) {
+ sinfo->bus_clk = clk_get(dev, "hck1");
+ if (IS_ERR(sinfo->bus_clk)) {
+ ret = PTR_ERR(sinfo->bus_clk);
+ goto free_info;
+ }
+ }
+ sinfo->lcdc_clk = clk_get(dev, "lcdc_clk");
+ if (IS_ERR(sinfo->lcdc_clk)) {
+ ret = PTR_ERR(sinfo->lcdc_clk);
+ goto put_bus_clk;
+ }
+ atmel_lcdfb_start_clock(sinfo);
+
+ ret = fb_find_mode(&info->var, info, NULL, info->monspecs.modedb,
+ info->monspecs.modedb_len, info->monspecs.modedb,
+ sinfo->default_bpp);
+ if (!ret) {
+ dev_err(dev, "no suitable video mode found\n");
+ goto stop_clk;
+ }
+
+
+ regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ dev_err(dev, "resources unusable\n");
+ ret = -ENXIO;
+ goto stop_clk;
+ }
+
+ sinfo->irq_base = platform_get_irq(pdev, 0);
+ if (sinfo->irq_base < 0) {
+ dev_err(dev, "unable to get irq\n");
+ ret = sinfo->irq_base;
+ goto stop_clk;
+ }
+
+ /* Initialize video memory */
+ map = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (map) {
+ /* use a pre-allocated memory buffer */
+ info->fix.smem_start = map->start;
+ info->fix.smem_len = map->end - map->start + 1;
+ if (!request_mem_region(info->fix.smem_start,
+ info->fix.smem_len, pdev->name)) {
+ ret = -EBUSY;
+ goto stop_clk;
+ }
+
+ info->screen_base = ioremap(info->fix.smem_start, info->fix.smem_len);
+ if (!info->screen_base)
+ goto release_intmem;
+ } else {
+ /* alocate memory buffer */
+ ret = atmel_lcdfb_alloc_video_memory(sinfo);
+ if (ret < 0) {
+ dev_err(dev, "cannot allocate framebuffer: %d\n", ret);
+ goto stop_clk;
+ }
+ }
+
+ /* LCDC registers */
+ info->fix.mmio_start = regs->start;
+ info->fix.mmio_len = regs->end - regs->start + 1;
+
+ if (!request_mem_region(info->fix.mmio_start,
+ info->fix.mmio_len, pdev->name)) {
+ ret = -EBUSY;
+ goto free_fb;
+ }
+
+ sinfo->mmio = ioremap(info->fix.mmio_start, info->fix.mmio_len);
+ if (!sinfo->mmio) {
+ dev_err(dev, "cannot map LCDC registers\n");
+ goto release_mem;
+ }
+
+ /* interrupt */
+ ret = request_irq(sinfo->irq_base, atmel_lcdfb_interrupt, 0, pdev->name, info);
+ if (ret) {
+ dev_err(dev, "request_irq failed: %d\n", ret);
+ goto unmap_mmio;
+ }
+
+ ret = atmel_lcdfb_init_fbinfo(sinfo);
+ if (ret < 0) {
+ dev_err(dev, "init fbinfo failed: %d\n", ret);
+ goto unregister_irqs;
+ }
+
+ /*
+ * This makes sure that our colour bitfield
+ * descriptors are correctly initialised.
+ */
+ atmel_lcdfb_check_var(&info->var, info);
+
+ ret = fb_set_var(info, &info->var);
+ if (ret) {
+ dev_warn(dev, "unable to set display parameters\n");
+ goto free_cmap;
+ }
+
+ dev_set_drvdata(dev, info);
+
+ /*
+ * Tell the world that we're ready to go
+ */
+ ret = register_framebuffer(info);
+ if (ret < 0) {
+ dev_err(dev, "failed to register framebuffer device: %d\n", ret);
+ goto free_cmap;
+ }
+
+ /* Power up the LCDC screen */
+ if (sinfo->atmel_lcdfb_power_control)
+ sinfo->atmel_lcdfb_power_control(1);
+
+ dev_info(dev, "fb%d: Atmel LCDC at 0x%08lx (mapped at %p), irq %lu\n",
+ info->node, info->fix.mmio_start, sinfo->mmio, sinfo->irq_base);
+
+ return 0;
+
+
+free_cmap:
+ fb_dealloc_cmap(&info->cmap);
+unregister_irqs:
+ free_irq(sinfo->irq_base, info);
+unmap_mmio:
+ iounmap(sinfo->mmio);
+release_mem:
+ release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
+free_fb:
+ if (map)
+ iounmap(info->screen_base);
+ else
+ atmel_lcdfb_free_video_memory(sinfo);
+
+release_intmem:
+ if (map)
+ release_mem_region(info->fix.smem_start, info->fix.smem_len);
+stop_clk:
+ atmel_lcdfb_stop_clock(sinfo);
+ clk_put(sinfo->lcdc_clk);
+put_bus_clk:
+ if (sinfo->bus_clk)
+ clk_put(sinfo->bus_clk);
+free_info:
+ framebuffer_release(info);
+out:
+ dev_dbg(dev, "%s FAILED\n", __func__);
+ return ret;
+}
+
+static int __exit atmel_lcdfb_remove(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct fb_info *info = dev_get_drvdata(dev);
+ struct atmel_lcdfb_info *sinfo = info->par;
+
+ if (!sinfo)
+ return 0;
+
+ if (sinfo->atmel_lcdfb_power_control)
+ sinfo->atmel_lcdfb_power_control(0);
+ unregister_framebuffer(info);
+ atmel_lcdfb_stop_clock(sinfo);
+ clk_put(sinfo->lcdc_clk);
+ if (sinfo->bus_clk)
+ clk_put(sinfo->bus_clk);
+ fb_dealloc_cmap(&info->cmap);
+ free_irq(sinfo->irq_base, info);
+ iounmap(sinfo->mmio);
+ release_mem_region(info->fix.mmio_start, info->fix.mmio_len);
+ if (platform_get_resource(pdev, IORESOURCE_MEM, 1)) {
+ iounmap(info->screen_base);
+ release_mem_region(info->fix.smem_start, info->fix.smem_len);
+ } else {
+ atmel_lcdfb_free_video_memory(sinfo);
+ }
+
+ dev_set_drvdata(dev, NULL);
+ framebuffer_release(info);
+
+ return 0;
+}
+
+static struct platform_driver atmel_lcdfb_driver = {
+ .remove = __exit_p(atmel_lcdfb_remove),
+ .driver = {
+ .name = "atmel_lcdfb",
+ .owner = THIS_MODULE,
+ },
+};
+
+static int __init atmel_lcdfb_init(void)
+{
+ return platform_driver_probe(&atmel_lcdfb_driver, atmel_lcdfb_probe);
+}
+
+static void __exit atmel_lcdfb_exit(void)
+{
+ platform_driver_unregister(&atmel_lcdfb_driver);
+}
+
+module_init(atmel_lcdfb_init);
+module_exit(atmel_lcdfb_exit);
+
+MODULE_DESCRIPTION("AT91/AT32 LCD Controller framebuffer driver");
+MODULE_AUTHOR("Nicolas Ferre <nicolas.ferre@rfo.atmel.com>");
+MODULE_LICENSE("GPL");
Say Y.
-# if [ "$CONFIG_PCI" = "y" -a "$CONFIG_VGA_CONSOLE" = "y" ]; then
-# bool ' Allow VGA on any bus?' CONFIG_VGA_HOSE
-# if [ "$CONFIG_VGA_HOSE" = "y" ]; then
-# define_bool CONFIG_DUMMY_CONSOLE y
-# fi
-# fi
-
config VGACON_SOFT_SCROLLBACK
bool "Enable Scrollback Buffer in System RAM"
depends on VGA_CONSOLE
pll = NV_RD32(par->PMC, 0x4024);
M = pll & 0xFF;
N = (pll >> 8) & 0xFF;
- if (((par->Chipset & 0xfff0) == 0x0290) || ((par->Chipset & 0xfff0) == 0x0390) || ((par->Chipset & 0xfff0) == 0x02E0)) {
+ if (((par->Chipset & 0xfff0) == 0x0290) ||
+ ((par->Chipset & 0xfff0) == 0x0390) ||
+ ((par->Chipset & 0xfff0) == 0x02E0)) {
MB = 1;
NB = 1;
} else {
#include "nv_proto.h"
#include "nv_dma.h"
-#undef CONFIG_FB_NVIDIA_DEBUG
#ifdef CONFIG_FB_NVIDIA_DEBUG
#define NVTRACE printk
#else
}
#endif
-static void wait_pm2(struct pm2fb_par* par) {
-
- WAIT_FIFO(par, 1);
- pm2_WR(par, PM2R_SYNC, 0);
- mb();
- do {
- while (pm2_RD(par, PM2R_OUT_FIFO_WORDS) == 0);
- rmb();
- } while (pm2_RD(par, PM2R_OUT_FIFO) != PM2TAG(PM2R_SYNC));
-}
-
/*
* partial products for the supported horizontal resolutions.
*/
return 0;
}
+static int pm2fb_sync(struct fb_info *info)
+{
+ struct pm2fb_par *par = info->par;
+
+ WAIT_FIFO(par, 1);
+ pm2_WR(par, PM2R_SYNC, 0);
+ mb();
+ do {
+ while (pm2_RD(par, PM2R_OUT_FIFO_WORDS) == 0)
+ udelay(10);
+ rmb();
+ } while (pm2_RD(par, PM2R_OUT_FIFO) != PM2TAG(PM2R_SYNC));
+
+ return 0;
+}
+
/*
* block operation. copy=0: rectangle fill, copy=1: rectangle copy.
*/
-static void pm2fb_block_op(struct pm2fb_par* par, int copy,
+static void pm2fb_block_op(struct fb_info* info, int copy,
s32 xsrc, s32 ysrc,
s32 x, s32 y, s32 w, s32 h,
u32 color) {
+ struct pm2fb_par *par = info->par;
if (!w || !h)
return;
(x<xsrc ? PM2F_INCREASE_X : 0) |
(y<ysrc ? PM2F_INCREASE_Y : 0) |
(copy ? 0 : PM2F_RENDER_FASTFILL));
- wait_pm2(par);
}
static void pm2fb_fillrect (struct fb_info *info,
const struct fb_fillrect *region)
{
- struct pm2fb_par *par = info->par;
struct fb_fillrect modded;
int vxres, vyres;
u32 color = (info->fix.visual == FB_VISUAL_TRUECOLOR) ?
color |= color << 16;
if(info->var.bits_per_pixel != 24)
- pm2fb_block_op(par, 0, 0, 0,
+ pm2fb_block_op(info, 0, 0, 0,
modded.dx, modded.dy,
modded.width, modded.height, color);
else
static void pm2fb_copyarea(struct fb_info *info,
const struct fb_copyarea *area)
{
- struct pm2fb_par *par = info->par;
struct fb_copyarea modded;
u32 vxres, vyres;
if(modded.dy + modded.height > vyres)
modded.height = vyres - modded.dy;
- pm2fb_block_op(par, 1, modded.sx, modded.sy,
+ pm2fb_block_op(info, 1, modded.sx, modded.sy,
modded.dx, modded.dy,
modded.width, modded.height, 0);
}
.fb_fillrect = pm2fb_fillrect,
.fb_copyarea = pm2fb_copyarea,
.fb_imageblit = cfb_imageblit,
+ .fb_sync = pm2fb_sync,
};
/*
/*
* linux/drivers/video/pm3fb.c -- 3DLabs Permedia3 frame buffer device
- *
- * Copyright (C) 2001 Romain Dolbeau <dolbeau@irisa.fr>
+ *
+ * Copyright (C) 2001 Romain Dolbeau <romain@dolbeau.org>.
+ *
+ * Ported to 2.6 kernel on 1 May 2007 by Krzysztof Helt <krzysztof.h1@wp.pl>
+ * based on pm2fb.c
+ *
* Based on code written by:
- * Sven Luther, <luther@dpt-info.u-strasbg.fr>
- *
Alan Hourihane, <alanh@fairlite.demon.co.uk>
- * Russell King, <rmk@arm.linux.org.uk>
+ * Sven Luther, <luther@dpt-info.u-strasbg.fr>
+ * Alan Hourihane, <alanh@fairlite.demon.co.uk>
+ * Russell King, <rmk@arm.linux.org.uk>
* Based on linux/drivers/video/skeletonfb.c:
* Copyright (C) 1997 Geert Uytterhoeven
* Based on linux/driver/video/pm2fb.c:
- * Copyright (C) 1998-1999 Ilario Nardinocchi (nardinoc@CS.UniBO.IT)
- * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
+ * Copyright (C) 1998-1999 Ilario Nardinocchi (nardinoc@CS.UniBO.IT)
+ * Copyright (C) 1999 Jakub Jelinek (jakub@redhat.com)
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
*
- * $Header: /cvsroot/linux/drivers/video/pm3fb.c,v 1.1 2002/02/25 19:11:06 marcelo Exp $
- *
- * CHANGELOG:
- * Mon Feb 11 10:35:48 MET 2002, v 1.4.11B: Cosmetic update.
- * Wed Jan 23 14:16:59 MET 2002, v 1.4.11: Preliminary 2.5.x support, patch for 2.5.2.
- * Wed Nov 28 11:08:29 MET 2001, v 1.4.10: potential bug fix for SDRAM-based board, patch for 2.4.16.
- * Thu Sep 20 10:24:42 MET DST 2001, v 1.4.9: sync bug fix, preliminary flatpanel support, better timings.
- * Tue Aug 28 10:13:01 MET DST 2001, v 1.4.8: memory timings check, minor bug fixes.
- * Wed Jul 18 19:06:14 CEST 2001, v 1.4.7: Mode fix (800x600-100, 1024x768-100 changed), using HW panning + accel bug fix.
- * Mon Jun 25 10:33:56 MET DST 2001, v 1.4.6: Depth 12 fix, chip reset ioctl, moved memory erase ioctl to DEBUG.
- * Wed Jun 20 11:13:08 MET DST 2001, v 1.4.5: Fixed missing blinking cursor in 8bpp, code cleaning, memory erase IOCTL.
- * Mon Jun 18 16:00:27 CEST 2001, v 1.4.4: Depth 12 (RGBA 4444) support, code cleaning.
- * Fri Jun 15 13:53:01 CEST 2001, v 1.4.3: Removed warnings, depth 15 support, add 'depth' option.
- * Thu Jun 14 10:13:52 MET DST 2001, v 1.4.2: Fixed depth switching bug, preliminary 15bpp (RGB5551) support.
- * Thu Apr 12 11:16:45 MET DST 2001, v 1.4.1B: Doc updates.
- * Fri Apr 6 11:12:53 MET DST 2001, v 1.4.1: Configure.help, minor cleanup
- * Thu Mar 29 10:56:50 MET DST 2001, v 1.4.0: Module & module options support (note: linux patch changed, 2.2.19 added).
- * Thu Mar 15 15:30:31 MET 2001, v 1.3.2: Fixed mirroring bug on little-endian.
- * Wed Mar 14 21:25:54 CET 2001, v 1.3.1: Fixed bug in BlockMove (_bmov).
- * Tue Mar 13 10:53:19 MET 2001, v 1.3.0: Character drawing hardware support (in all width between 1 and 16), fixes.
- * Thu Mar 8 10:20:16 MET 2001, v 1.2.2: Better J2000 support, "font:" option.
- * Tue Mar 6 21:25:04 CET 2001, v 1.2.1: Better acceleration support.
- * Mon Mar 5 21:54:17 CET 2001, v 1.2.0: Partial acceleration support (clear & bmove)
- * Mon Mar 5 12:52:15 CET 2001, v 1.1.3: Big pan_display fix.
- * Sun Mar 4 22:21:50 CET 2001, v 1.1.2: (numerous) bug fixes.
- * Fri Mar 2 15:54:07 CET 2001, v 1.1.1: Might have Appian J2000 support, resource mangement in 2.4
- * Wed Feb 28 18:21:35 CET 2001, v 1.1.0: Might have multiple boards support (added, but not yest tested)
- * Tue Feb 27 17:31:12 CET 2001, v 1.0.6: fixes boot-time mode select, add more default mode
- * Tue Feb 27 14:01:36 CET 2001, v 1.0.5: fixes (1.0.4 was broken for 2.2), cleaning up
- * Mon Feb 26 23:17:36 CET 2001, v 1.0.4: preliminary 2.4.x support, dropped (useless on pm3) partial product, more OF fix
- * Mon Feb 26 20:59:05 CET 2001, v 1.0.3: No more shadow register (and wasted memory), endianess fix, use OF-preset resolution by default
- * Wed Feb 21 22:09:30 CET 2001, v 1.0.2: Code cleaning for future multiboard support, better OF support, bugs fix
- * Wed Feb 21 19:58:56 CET 2001, v 1.0.1: OpenFirmware support, fixed memory detection, better debug support, code cleaning
- * Wed Feb 21 14:47:06 CET 2001, v 1.0.0: First working version
*/
#include <linux/module.h>
#include <linux/string.h>
#include <linux/mm.h>
#include <linux/slab.h>
-#include <linux/vmalloc.h>
#include <linux/delay.h>
-#include <linux/interrupt.h>
#include <linux/fb.h>
#include <linux/init.h>
#include <linux/pci.h>
-#include <linux/ioport.h>
-#include <linux/ctype.h>
-
-#include <video/fbcon.h>
-#include <video/fbcon-mfb.h>
-#include <video/fbcon-cfb2.h>
-#include <video/fbcon-cfb4.h>
-#include <video/fbcon-cfb8.h>
-#include <video/fbcon-cfb16.h>
-#include <video/fbcon-cfb24.h>
-#include <video/fbcon-cfb32.h>
-#include <video/pm3fb.h>
-#include <asm/io.h>
-#include <asm/uaccess.h>
+#include <video/pm3fb.h>
-#ifdef CONFIG_FB_OF
-#include <asm/prom.h>
+#if !defined(CONFIG_PCI)
+#error "Only generic PCI cards supported."
#endif
-/* ************************************* */
-/* ***** The various "global" data ***** */
-/* ************************************* */
-
-/* those will need a rework for multiple board support */
-/* Driver name */
-static const char permedia3_name[16] = "Permedia3";
-
-/* the fb_par struct, mandatory */
-struct pm3fb_par {
- u32 pixclock; /* pixclock in KHz */
-
- u32 width; /* width of virtual screen */
- u32 height; /* height of virtual screen */
-
- u32 hsstart; /* horiz. sync start */
- u32 hsend; /* horiz. sync end */
- u32 hbend; /* horiz. blank end (also gate end) */
- u32 htotal; /* total width (w/ sync & blank) */
-
- u32 vsstart; /* vert. sync start */
- u32 vsend; /* vert. sync end */
- u32 vbend; /* vert. blank end */
- u32 vtotal; /* total height (w/ sync & blank) */
-
- u32 stride; /* screen stride */
- u32 base; /* screen base (xoffset+yoffset) in 128 bits unit */
- /* NOTE : unlike other pm3 stuff above, stored *after* shiftbpp. don't ask */
- u32 depth; /* screen depth (8, 12, 15, 16 or 32) */
- u32 video; /* video control (hsync,vsync) */
-};
-
-/* memory timings */
-struct pm3fb_timings
-{
- unsigned long caps;
- unsigned long timings;
- unsigned long control;
- unsigned long refresh;
- unsigned long powerdown;
-};
-typedef enum pm3fb_timing_result { pm3fb_timing_ok, pm3fb_timing_problem, pm3fb_timing_retry } pm3fb_timing_result;
-#define PM3FB_UNKNOWN_TIMING_VALUE ((unsigned long)-1)
-#define PM3FB_UNKNOWN_TIMINGS { PM3FB_UNKNOWN_TIMING_VALUE, PM3FB_UNKNOWN_TIMING_VALUE, PM3FB_UNKNOWN_TIMING_VALUE, PM3FB_UNKNOWN_TIMING_VALUE, PM3FB_UNKNOWN_TIMING_VALUE }
-
-/* the fb_info struct, mandatory */
-struct pm3fb_info {
- struct fb_info_gen gen;
- unsigned long board_num; /* internal board number */
- unsigned long use_current;
- struct pm3fb_par *current_par;
- struct pci_dev *dev; /* PCI device */
- unsigned long board_type; /* index in the cardbase */
- unsigned char *fb_base; /* framebuffer memory base */
- u32 fb_size; /* framebuffer memory size */
- unsigned char *p_fb; /* physical address of frame buffer */
- unsigned char *v_fb; /* virtual address of frame buffer */
- unsigned char *pIOBase; /* physical address of registers region, must be rg_base or rg_base+PM2_REGS_SIZE depending on the host endianness */
- unsigned char *vIOBase; /* address of registers after ioremap() */
- struct {
- u8 transp;
- u8 red;
- u8 green;
- u8 blue;
- } palette[256];
- union {
-#ifdef FBCON_HAS_CFB16
- u16 cmap12[16]; /* RGBA 4444 */
- u16 cmap15[16]; /* RGBA 5551 */
- u16 cmap16[16]; /* RGBA 5650 */
-#endif
-#ifdef FBCON_HAS_CFB32
- u32 cmap32[16];
+#undef PM3FB_MASTER_DEBUG
+#ifdef PM3FB_MASTER_DEBUG
+#define DPRINTK(a,b...) printk(KERN_DEBUG "pm3fb: %s: " a, __FUNCTION__ , ## b)
+#else
+#define DPRINTK(a,b...)
#endif
- } cmap;
- struct pm3fb_timings memt;
-};
-
-/* regular resolution database*/
-static struct {
- char name[16];
- struct pm3fb_par user_mode;
-} mode_base[] __initdata = {
- {
- "default-800x600", {
- 49500, 800, 600, 16, 96, 256, 1056, 1, 4, 25, 625,
- 800, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}}, {
- "1024x768-74", {
- 78752, 1024, 768, 32, 128, 304, 1328, 1, 4, 38,
- 806, 1024, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}}, {
- "1024x768-74-32", {
- 78752, 1024, 768, 32, 128, 304, 1328, 1, 4, 38,
- 806, 1024, 0, 32,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_32BIT}},
-/* Generated mode : "1600x1024", for the SGI 1600SW flat panel*/
- {
- "SGI1600SW", {
- 108000, 1600, 1024, 16, 56, 104, 1704, 3, 6, 32,
- 1056, 1600, 0, 8,
- PM3VideoControl_ENABLE|
- PM3VideoControl_HSYNC_ACTIVE_LOW|PM3VideoControl_VSYNC_ACTIVE_LOW|
- PM3VideoControl_PIXELSIZE_32BIT}},
-/* ##### auto-generated mode, by fbtimings2pm3 */
-/* Generated mode : "640x480-60" */
- {
- "640x480-60", {
- 25174, 640, 480, 16, 112, 160, 800, 10, 12, 45,
- 525, 640, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "640x480-72" */
- {
- "640x480-72", {
- 31199, 640, 480, 24, 64, 192, 832, 9, 12, 40, 520,
- 640, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "640x480-75" */
- {
- "640x480-75", {
- 31499, 640, 480, 16, 80, 200, 840, 1, 4, 20, 500,
- 640, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "640x480-90" */
- {
- "640x480-90", {
- 39909, 640, 480, 32, 72, 192, 832, 25, 39, 53, 533,
- 640, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "640x480-100" */
- {
- "640x480-100", {
- 44899, 640, 480, 32, 160, 208, 848, 22, 34, 51,
- 531, 640, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "800x600-48-lace" */
-/* INTERLACED NOT SUPPORTED
- {"800x600-48-lace", {35999, 800, 600, 80, 208, 264, 1064, 11, 23, 102, 702, 800, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}},
- INTERLACED NOT SUPPORTED */
-/* Generated mode : "800x600-56" */
- {
- "800x600-56", {
- 35999, 800, 600, 24, 96, 224, 1024, 1, 3, 25, 625,
- 800, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "800x600-60" */
- {
- "800x600-60", {
- 40000, 800, 600, 40, 168, 256, 1056, 1, 5, 28, 628,
- 800, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "800x600-70" */
- {
- "800x600-70", {
- 44899, 800, 600, 24, 168, 208, 1008, 9, 21, 36,
- 636, 800, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "800x600-72" */
- {
- "800x600-72", {
- 50000, 800, 600, 56, 176, 240, 1040, 37, 43, 66,
- 666, 800, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "800x600-75" */
- {
- "800x600-75", {
- 49497, 800, 600, 16, 96, 256, 1056, 1, 4, 25, 625,
- 800, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "800x600-90" */
- {
- "800x600-90", {
- 56637, 800, 600, 8, 72, 192, 992, 8, 19, 35, 635,
- 800, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "800x600-100", from /etc/fb.modes */
-/* DISABLED, hsstart == 0
- {
- "800x600-100", {
- 67499, 800, 600, 0, 64, 280, 1080, 7, 11, 25, 625,
- 800, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-*/
-/* Generated mode : "800x600-100", from ??? */
- {
- "800x600-100", {
- 69650, 800, 600, 64, 128, 288, 1088, 4, 10, 40, 640, 800, 0, 8,
- PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_LOW|
- PM3VideoControl_VSYNC_ACTIVE_LOW|PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1024x768-43-lace" */
-/* INTERLACED NOT SUPPORTED
- {"1024x768-43-lace", {44899, 1024, 768, 8, 184, 240, 1264, 1, 9, 49, 817, 1024, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}},
- INTERLACED NOT SUPPORTED */
-/* Generated mode : "1024x768-60" */
- {
- "1024x768-60", {
- 64998, 1024, 768, 24, 160, 320, 1344, 3, 9, 38,
- 806, 1024, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1024x768-70" */
- {
- "1024x768-70", {
- 74996, 1024, 768, 24, 160, 304, 1328, 3, 9, 38,
- 806, 1024, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1024x768-72" */
- {
- "1024x768-72", {
- 74996, 10224, 768, 24, 160, 264, 10488, 3, 9, 38,
- 806, 10224, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1024x768-75" */
- {
- "1024x768-75", {
- 78746, 1024, 768, 16, 112, 288, 1312, 1, 4, 32,
- 800, 1024, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1024x768-90" */
- {
- "1024x768-90", {
- 100000, 1024, 768, 0, 96, 288, 1312, 21, 36, 77,
- 845, 1024, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1024x768-100", from /etc/fb.modes */
-/* DISABLED, vsstart == 0
- {
- "1024x768-100", {
- 109998, 1024, 768, 0, 88, 368, 1392, 0, 8, 24, 792,
- 1024, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-*/
-/* Generated mode : "1024x768-100", from ??? */
- {
- "1024x768-100", {
- 115500, 1024, 768, 32, 224, 416, 1440, 3, 13, 34, 802, 1024, 0, 8,
- PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_LOW|
- PM3VideoControl_VSYNC_ACTIVE_LOW|PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1152x864-43-lace" */
-/* INTERLACED NOT SUPPORTED
- {"1152x864-43-lace", {64998, 1152, 864, 72, 200, 264, 1416, 78, 87, 191, 1055, 1152, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}},
- INTERLACED NOT SUPPORTED */
-/* Generated mode : "1152x864-47-lace" */
-/* INTERLACED NOT SUPPORTED
- {"1152x864-47-lace", {64998, 1152, 864, 88, 216, 296, 1448, 30, 39, 83, 947, 1152, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}},
- INTERLACED NOT SUPPORTED */
-/* Generated mode : "1152x864-60" */
- {
- "1152x864-60", {
- 80000, 1152, 864, 64, 176, 304, 1456, 6, 11, 52,
- 916, 1152, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1152x864-70" */
- {
- "1152x864-70", {
- 100000, 1152, 864, 40, 192, 360, 1512, 13, 24, 81,
- 945, 1152, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1152x864-75" */
- {
- "1152x864-75", {
- 109998, 1152, 864, 24, 168, 312, 1464, 45, 53, 138,
- 1002, 1152, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1152x864-80" */
- {
- "1152x864-80", {
- 109998, 1152, 864, 16, 128, 288, 1440, 30, 37, 94,
- 958, 1152, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1280x1024-43-lace" */
-/* INTERLACED NOT SUPPORTED
- {"1280x1024-43-lace", {80000, 1024, 1024, 80, 160, 320, 1344, 50, 60, 125, 1149, 1024, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}},
- INTERLACED NOT SUPPORTED */
-/* Generated mode : "1280x1024-47-lace" */
-/* INTERLACED NOT SUPPORTED
- {"1280x1024-47-lace", {80000, 1280, 1024, 80, 160, 320, 1600, 1, 11, 29, 1053, 1280, 0, 8, PM3VideoControl_ENABLE|PM3VideoControl_HSYNC_ACTIVE_HIGH|PM3VideoControl_VSYNC_ACTIVE_HIGH|PM3VideoControl_PIXELSIZE_8BIT}},
- INTERLACED NOT SUPPORTED */
-/* Generated mode : "1280x1024-60" */
- {
- "1280x1024-60", {
- 107991, 1280, 1024, 48, 160, 408, 1688, 1, 4, 42,
- 1066, 1280, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1280x1024-70" */
- {
- "1280x1024-70", {
- 125992, 1280, 1024, 80, 192, 408, 1688, 1, 6, 42,
- 1066, 1280, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1280x1024-74" */
- {
- "1280x1024-74", {
- 134989, 1280, 1024, 32, 176, 432, 1712, 0, 30, 40,
- 1064, 1280, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1280x1024-75" */
- {
- "1280x1024-75", {
- 134989, 1280, 1024, 16, 160, 408, 1688, 1, 4, 42,
- 1066, 1280, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_HIGH
- |
- PM3VideoControl_VSYNC_ACTIVE_HIGH
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1600x1200-60" */
- {
- "1600x1200-60", {
- 155981, 1600, 1200, 32, 192, 448, 2048, 10, 18, 70,
- 1270, 1600, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1600x1200-66" */
- {
- "1600x1200-66", {
- 171998, 1600, 1200, 40, 176, 480, 2080, 3, 6, 53,
- 1253, 1600, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* Generated mode : "1600x1200-76" */
- {
- "1600x1200-76", {
- 197980, 1600, 1200, 40, 176, 480, 2080, 3, 8, 50,
- 1250, 1600, 0, 8,
- PM3VideoControl_ENABLE |
- PM3VideoControl_HSYNC_ACTIVE_LOW
- |
- PM3VideoControl_VSYNC_ACTIVE_LOW
- | PM3VideoControl_PIXELSIZE_8BIT}},
-/* ##### end of auto-generated mode */
- {
- "\0",}
-};
-/* more mandatory stuff (see skeletonfb.c + framebuffer driver HOWTO */
-static struct pm3fb_info fb_info[PM3_MAX_BOARD];
-static struct pm3fb_par current_par[PM3_MAX_BOARD];
-static int current_par_valid[PM3_MAX_BOARD];
-/* to allow explicit filtering of board */
-short bus[PM3_MAX_BOARD];
-short slot[PM3_MAX_BOARD];
-short func[PM3_MAX_BOARD];
-short disable[PM3_MAX_BOARD];
-short noaccel[PM3_MAX_BOARD];
-char fontn[PM3_MAX_BOARD][PM3_FONTNAME_SIZE];
-short depth[PM3_MAX_BOARD];
-short flatpanel[PM3_MAX_BOARD];
-static struct display disp[PM3_MAX_BOARD];
-static char g_options[PM3_OPTIONS_SIZE] __initdata = "pm3fb,dummy";
-short printtimings = 0;
-short forcesize[PM3_MAX_BOARD];
-
-/* ********************* */
-/* ***** prototype ***** */
-/* ********************* */
-/* card-specific */
-static void pm3fb_j2000_setup(struct pm3fb_info *l_fb_info);
-/* permedia3-specific */
-static pm3fb_timing_result pm3fb_preserve_memory_timings(struct pm3fb_info *l_fb_info);
-static pm3fb_timing_result pm3fb_try_memory_timings(struct pm3fb_info *l_fb_info);
-static void pm3fb_write_memory_timings(struct pm3fb_info *l_fb_info);
-static unsigned long pm3fb_read_dac_reg(struct pm3fb_info *l_fb_info,
- unsigned long r);
-static unsigned long pm3fb_CalculateClock(struct pm3fb_info *l_fb_info, unsigned long reqclock, /* In kHz units */
- unsigned long refclock, /* In kHz units */
- unsigned char *prescale, /* ClkPreScale */
- unsigned char *feedback, /* ClkFeedBackScale */
- unsigned char *postscale
- /* ClkPostScale */ );
-static void pm3fb_clear_memory(struct pm3fb_info *l_fb_info, u32 cc);
-static void pm3fb_clear_colormap(struct pm3fb_info *l_fb_info, unsigned char r, unsigned char g, unsigned char b);
-static void pm3fb_common_init(struct pm3fb_info *l_fb_info);
-static int pm3fb_Shiftbpp(struct pm3fb_info *l_fb_info,
- unsigned long depth, int v);
-static int pm3fb_Unshiftbpp(struct pm3fb_info *l_fb_info,
- unsigned long depth, int v);
-static void pm3fb_mapIO(struct pm3fb_info *l_fb_info);
-static void pm3fb_unmapIO(struct pm3fb_info *l_fb_info);
-#if defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 2)
-static void pm3fb_show_cur_mode(struct pm3fb_info *l_fb_info);
-#endif
-static void pm3fb_show_cur_timing(struct pm3fb_info *l_fb_info);
-static void pm3fb_write_mode(struct pm3fb_info *l_fb_info);
-static void pm3fb_read_mode(struct pm3fb_info *l_fb_info,
- struct pm3fb_par *curpar);
-static unsigned long pm3fb_size_memory(struct pm3fb_info *l_fb_info);
-/* accelerated permedia3-specific */
-#ifdef PM3FB_USE_ACCEL
-static void pm3fb_wait_pm3(struct pm3fb_info *l_fb_info);
-static void pm3fb_init_engine(struct pm3fb_info *l_fb_info);
-#ifdef FBCON_HAS_CFB32
-static void pm3fb_cfb32_clear(struct vc_data *conp,
- struct display *p,
- int sy, int sx, int height, int width);
-static void pm3fb_cfb32_clear_margins(struct vc_data *conp,
- struct display *p, int bottom_only);
-#endif /* FBCON_HAS_CFB32 */
-#ifdef FBCON_HAS_CFB16
-static void pm3fb_cfb16_clear(struct vc_data *conp,
- struct display *p,
- int sy, int sx, int height, int width);
-static void pm3fb_cfb16_clear_margins(struct vc_data *conp,
- struct display *p, int bottom_only);
-#endif /* FBCON_HAS_CFB16 */
-#ifdef FBCON_HAS_CFB8
-static void pm3fb_cfb8_clear(struct vc_data *conp,
- struct display *p,
- int sy, int sx, int height, int width);
-static void pm3fb_cfb8_clear_margins(struct vc_data *conp,
- struct display *p, int bottom_only);
-#endif /* FBCON_HAS_CFB8 */
-#if defined(FBCON_HAS_CFB8) || defined(FBCON_HAS_CFB16) || defined(FBCON_HAS_CFB32)
-static void pm3fb_cfbX_bmove(struct display *p,
- int sy, int sx,
- int dy, int dx, int height, int width);
-static void pm3fb_cfbX_putc(struct vc_data *conp, struct display *p,
- int c, int yy, int xx);
-static void pm3fb_cfbX_putcs(struct vc_data *conp, struct display *p,
- const unsigned short *s, int count, int yy,
- int xx);
-static void pm3fb_cfbX_revc(struct display *p, int xx, int yy);
-#endif /* FBCON_HAS_CFB8 || FBCON_HAS_CFB16 || FBCON_HAS_CFB32 */
-#endif /* PM3FB_USE_ACCEL */
-/* pre-init */
-static void pm3fb_mode_setup(char *mode, unsigned long board_num);
-static void pm3fb_pciid_setup(char *pciid, unsigned long board_num);
-static char *pm3fb_boardnum_setup(char *options, unsigned long *bn);
-static void pm3fb_real_setup(char *options);
-/* fbdev */
-static int pm3fb_encode_fix(struct fb_fix_screeninfo *fix,
- const void *par, struct fb_info_gen *info);
-static int pm3fb_decode_var(const struct fb_var_screeninfo *var,
- void *par, struct fb_info_gen *info);
-static void pm3fb_encode_depth(struct fb_var_screeninfo *var, long d);
-static int pm3fb_encode_var(struct fb_var_screeninfo *var,
- const void *par, struct fb_info_gen *info);
-static void pm3fb_get_par(void *par, struct fb_info_gen *info);
-static void pm3fb_set_par(const void *par, struct fb_info_gen *info);
-static void pm3fb_set_color(struct pm3fb_info *l_fb_info,
- unsigned char regno, unsigned char r,
- unsigned char g, unsigned char b);
-static int pm3fb_getcolreg(unsigned regno, unsigned *red, unsigned *green,
- unsigned *blue, unsigned *transp,
- struct fb_info *info);
-static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info);
-static int pm3fb_blank(int blank_mode, struct fb_info_gen *info);
-static void pm3fb_set_disp(const void *par, struct display *disp,
- struct fb_info_gen *info);
-static void pm3fb_detect(void);
-static int pm3fb_pan_display(const struct fb_var_screeninfo *var,
- struct fb_info_gen *info);
-static int pm3fb_ioctl(struct fb_info *info, u_int cmd, u_long arg);
-
-
-/* the struct that hold them together */
-struct fbgen_hwswitch pm3fb_switch = {
- pm3fb_detect, pm3fb_encode_fix, pm3fb_decode_var, pm3fb_encode_var,
- pm3fb_get_par, pm3fb_set_par, pm3fb_getcolreg,
- pm3fb_pan_display, pm3fb_blank, pm3fb_set_disp
-};
+/*
+ * Driver data
+ */
+static char *mode_option __devinitdata;
-static struct fb_ops pm3fb_ops = {
- .owner = THIS_MODULE,
- .fb_get_fix = fbgen_get_fix,
- .fb_get_var = fbgen_get_var,
- .fb_set_var = fbgen_set_var,
- .fb_get_cmap = fbgen_get_cmap,
- .fb_set_cmap = fbgen_set_cmap,
- .fb_setcolreg = pm3fb_setcolreg,
- .fb_pan_display =fbgen_pan_display,
- .fb_blank = fbgen_blank,
- .fb_ioctl = pm3fb_ioctl,
-};
+/*
+ * If your driver supports multiple boards, you should make the
+ * below data types arrays, or allocate them dynamically (using kmalloc()).
+ */
-#ifdef PM3FB_USE_ACCEL
-#ifdef FBCON_HAS_CFB32
-static struct display_switch pm3fb_cfb32 = {
- fbcon_cfb32_setup, pm3fb_cfbX_bmove, pm3fb_cfb32_clear,
- pm3fb_cfbX_putc, pm3fb_cfbX_putcs, pm3fb_cfbX_revc,
- NULL /* cursor() */ , NULL /* set_font() */ ,
- pm3fb_cfb32_clear_margins,
- FONTWIDTHRANGE(1, 16) /* true only if accelerated... */
-};
-#endif /* FBCON_HAS_CFB32 */
-#ifdef FBCON_HAS_CFB16
-static struct display_switch pm3fb_cfb16 = {
- fbcon_cfb16_setup, pm3fb_cfbX_bmove, pm3fb_cfb16_clear,
- pm3fb_cfbX_putc, pm3fb_cfbX_putcs, pm3fb_cfbX_revc,
- NULL /* cursor() */ , NULL /* set_font() */ ,
- pm3fb_cfb16_clear_margins,
- FONTWIDTHRANGE(1, 16) /* true only if accelerated... */
-};
-#endif /* FBCON_HAS_CFB16 */
-#ifdef FBCON_HAS_CFB8
-static struct display_switch pm3fb_cfb8 = {
- fbcon_cfb8_setup, pm3fb_cfbX_bmove, pm3fb_cfb8_clear,
- pm3fb_cfbX_putc, pm3fb_cfbX_putcs, pm3fb_cfbX_revc,
- NULL /* cursor() */ , NULL /* set_font() */ ,
- pm3fb_cfb8_clear_margins,
- FONTWIDTHRANGE(1, 16) /* true only if accelerated... */
-};
-#endif /* FBCON_HAS_CFB8 */
-#endif /* PM3FB_USE_ACCEL */
-
-/* ****************************** */
-/* ***** card-specific data ***** */
-/* ****************************** */
-struct pm3fb_card_timings {
- unsigned long memsize; /* 0 for last value (i.e. default) */
- struct pm3fb_timings memt;
+/*
+ * This structure defines the hardware state of the graphics card. Normally
+ * you place this in a header file in linux/include/video. This file usually
+ * also includes register information. That allows other driver subsystems
+ * and userland applications the ability to use the same header file to
+ * avoid duplicate work and easy porting of software.
+ */
+struct pm3_par {
+ unsigned char __iomem *v_regs;/* virtual address of p_regs */
+ u32 video; /* video flags before blanking */
+ u32 base; /* screen base (xoffset+yoffset) in 128 bits unit */
+ u32 palette[16];
};
-static struct pm3fb_card_timings t_FormacProFormance3[] = {
- { 16, { 0x02e311b8, 0x06100205, 0x08000002, 0x00000079, 0x00000000} },
- { 0, { 0x02e311b8, 0x06100205, 0x08000002, 0x00000079, 0x00000000} } /* from 16 MB PF3 */
+/*
+ * Here we define the default structs fb_fix_screeninfo and fb_var_screeninfo
+ * if we don't use modedb. If we do use modedb see pm3fb_init how to use it
+ * to get a fb_var_screeninfo. Otherwise define a default var as well.
+ */
+static struct fb_fix_screeninfo pm3fb_fix __devinitdata = {
+ .id = "Permedia3",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_PSEUDOCOLOR,
+ .xpanstep = 1,
+ .ypanstep = 1,
+ .ywrapstep = 0,
+ .accel = FB_ACCEL_NONE,
};
-static struct pm3fb_card_timings t_AppianJeronimo2000[] = {
- { 32, { 0x02e311B8, 0x07424905, 0x0c000003, 0x00000061, 0x00000000} },
- { 0, { 0x02e311B8, 0x07424905, 0x0c000003, 0x00000061, 0x00000000} } /* from 32MB J2000 */
-};
+/*
+ * Utility functions
+ */
-static struct pm3fb_card_timings t_3DLabsOxygenVX1[] = {
- { 32, { 0x30e311b8, 0x08501204, 0x08000002, 0x0000006b, 0x00000000} },
- { 0, { 0x30e311b8, 0x08501204, 0x08000002, 0x0000006b, 0x00000000} } /* from 32MB VX1 */
-};
+static inline u32 PM3_READ_REG(struct pm3_par *par, s32 off)
+{
+ return fb_readl(par->v_regs + off);
+}
-static struct {
- char cardname[32]; /* recognized card name */
- u16 subvendor; /* subvendor of the card */
- u16 subdevice; /* subdevice of the card */
- u8 func; /* function of the card to which the extra init apply */
- void (*specific_setup)(struct pm3fb_info *l_fb_info); /* card/func specific setup, done before _any_ FB access */
- struct pm3fb_card_timings *c_memt; /* defauls timings for the boards */
-} cardbase[] = {
- { "Unknown Permedia3 board", 0xFFFF, 0xFFFF, 0xFF, NULL, NULL },
- { "Appian Jeronimo 2000 head 1", 0x1097, 0x3d32, 1, NULL,
- t_AppianJeronimo2000
- },
- { "Appian Jeronimo 2000 head 2", 0x1097, 0x3d32, 2, pm3fb_j2000_setup,
- t_AppianJeronimo2000
- },
- { "Formac ProFormance 3", PCI_VENDOR_ID_3DLABS, 0x000a, 0, NULL, /* Formac use 3DLabs ID ?!? */
- t_FormacProFormance3
- },
- { "3DLabs Permedia3 Create!", PCI_VENDOR_ID_3DLABS, 0x0127, 0, NULL, NULL },
- { "3DLabs Oxygen VX1 PCI", PCI_VENDOR_ID_3DLABS, 0x0121, 0, NULL,
- t_3DLabsOxygenVX1
- },
- { "3DLabs Oxygen VX1 AGP", PCI_VENDOR_ID_3DLABS, 0x0125, 0, NULL, NULL },
- { "3DLabs Oxygen VX1-16 AGP", PCI_VENDOR_ID_3DLABS, 0x0140, 0, NULL, NULL },
- { "3DLabs Oxygen VX1-1600SW PCI", PCI_VENDOR_ID_3DLABS, 0x0800, 0, NULL, NULL },
- { "\0", 0x0, 0x0, 0, NULL, NULL }
-};
+static inline void PM3_WRITE_REG(struct pm3_par *par, s32 off, u32 v)
+{
+ fb_writel(v, par->v_regs + off);
+}
-/* ********************************** */
-/* ***** card-specific function ***** */
-/* ********************************** */
-static void pm3fb_j2000_setup(struct pm3fb_info *l_fb_info)
-{ /* the appian j2000 require more initialization of the second head */
- /* l_fb_info must point to the _second_ head of the J2000 */
-
- DTRACE;
-
- l_fb_info->memt = t_AppianJeronimo2000[0].memt; /* 32 MB, first and only j2000 ? */
-
- pm3fb_write_memory_timings(l_fb_info);
+static inline void PM3_WAIT(struct pm3_par *par, u32 n)
+{
+ while (PM3_READ_REG(par, PM3InFIFOSpace) < n);
}
-/* *************************************** */
-/* ***** permedia3-specific function ***** */
-/* *************************************** */
-static pm3fb_timing_result pm3fb_preserve_memory_timings(struct pm3fb_info *l_fb_info)
+static inline void PM3_SLOW_WRITE_REG(struct pm3_par *par, s32 off, u32 v)
{
- l_fb_info->memt.caps = PM3_READ_REG(PM3LocalMemCaps);
- l_fb_info->memt.timings = PM3_READ_REG(PM3LocalMemTimings);
- l_fb_info->memt.control = PM3_READ_REG(PM3LocalMemControl);
- l_fb_info->memt.refresh = PM3_READ_REG(PM3LocalMemRefresh);
- l_fb_info->memt.powerdown = PM3_READ_REG(PM3LocalMemPowerDown);
-
- if ((l_fb_info->memt.caps == PM3FB_UNKNOWN_TIMING_VALUE) ||
- (l_fb_info->memt.timings == PM3FB_UNKNOWN_TIMING_VALUE) ||
- (l_fb_info->memt.control == PM3FB_UNKNOWN_TIMING_VALUE) ||
- (l_fb_info->memt.refresh == PM3FB_UNKNOWN_TIMING_VALUE) ||
- (l_fb_info->memt.powerdown == PM3FB_UNKNOWN_TIMING_VALUE))
- {
- printk(KERN_ERR "pm3fb: invalid memory timings in permedia3 board #%ld\n", l_fb_info->board_num);
- return(pm3fb_try_memory_timings(l_fb_info));
+ if (par->v_regs) {
+ mb();
+ PM3_WAIT(par, 1);
+ wmb();
+ PM3_WRITE_REG(par, off, v);
}
- return(pm3fb_timing_ok);
}
-static pm3fb_timing_result pm3fb_try_memory_timings(struct pm3fb_info *l_fb_info)
+static inline void PM3_SET_INDEX(struct pm3_par *par, unsigned index)
{
- if (cardbase[l_fb_info->board_type].c_memt)
- {
- int i = 0, done = 0;
- while (!done)
- {
- if ((cardbase[l_fb_info->board_type].c_memt[i].memsize == l_fb_info->fb_size)
- || !(cardbase[l_fb_info->board_type].c_memt[i].memsize))
- { /* will use the 0-sized timings by default */
- done = 1;
- l_fb_info->memt = cardbase[l_fb_info->board_type].c_memt[i].memt;
- printk(KERN_WARNING "pm3fb: trying to use predefined memory timings for permedia3 board #%ld (%s, %ld MB)\n",
- l_fb_info->board_num,
- cardbase[l_fb_info->board_type].cardname,
- cardbase[l_fb_info->board_type].c_memt[i].memsize);
- pm3fb_write_memory_timings(l_fb_info);
- return(pm3fb_timing_retry);
- }
- i++;
- }
- } else
- return(pm3fb_timing_problem);
- return(pm3fb_timing_ok);
+ PM3_SLOW_WRITE_REG(par, PM3RD_IndexHigh, (index >> 8) & 0xff);
+ PM3_SLOW_WRITE_REG(par, PM3RD_IndexLow, index & 0xff);
}
-static void pm3fb_write_memory_timings(struct pm3fb_info *l_fb_info)
+static inline void PM3_WRITE_DAC_REG(struct pm3_par *par, unsigned r, u8 v)
{
- unsigned char m, n, p;
- unsigned long clockused;
-
- PM3_SLOW_WRITE_REG(PM3LocalMemCaps, l_fb_info->memt.caps);
- PM3_SLOW_WRITE_REG(PM3LocalMemTimings, l_fb_info->memt.timings);
- PM3_SLOW_WRITE_REG(PM3LocalMemControl, l_fb_info->memt.control);
- PM3_SLOW_WRITE_REG(PM3LocalMemRefresh, l_fb_info->memt.refresh);
- PM3_SLOW_WRITE_REG(PM3LocalMemPowerDown, l_fb_info->memt.powerdown);
-
- clockused =
- pm3fb_CalculateClock(l_fb_info, 2 * 105000, PM3_REF_CLOCK, &m,
- &n, &p);
-
- PM3_WRITE_DAC_REG(PM3RD_KClkPreScale, m);
- PM3_WRITE_DAC_REG(PM3RD_KClkFeedbackScale, n);
- PM3_WRITE_DAC_REG(PM3RD_KClkPostScale, p);
- PM3_WRITE_DAC_REG(PM3RD_KClkControl,
- PM3RD_KClkControl_STATE_RUN |
- PM3RD_KClkControl_SOURCE_PLL |
- PM3RD_KClkControl_ENABLE);
- PM3_WRITE_DAC_REG(PM3RD_MClkControl,
- PM3RD_MClkControl_STATE_RUN |
- PM3RD_MClkControl_SOURCE_KCLK |
- PM3RD_MClkControl_ENABLE);
- PM3_WRITE_DAC_REG(PM3RD_SClkControl,
- PM3RD_SClkControl_STATE_RUN |
- PM3RD_SClkControl_SOURCE_PCLK |
- PM3RD_SClkControl_ENABLE);
+ PM3_SET_INDEX(par, r);
+ wmb();
+ PM3_WRITE_REG(par, PM3RD_IndexedData, v);
}
-static unsigned long pm3fb_read_dac_reg(struct pm3fb_info *l_fb_info,
- unsigned long r)
+static inline void pm3fb_set_color(struct pm3_par *par, unsigned char regno,
+ unsigned char r, unsigned char g, unsigned char b)
{
- DASSERT((l_fb_info->vIOBase != (unsigned char *) (-1)),
- "l_fb_info->vIOBase mapped in read dac reg\n");
- PM3_SET_INDEX(r);
- mb();
- return (PM3_READ_REG(PM3RD_IndexedData));
+ PM3_SLOW_WRITE_REG(par, PM3RD_PaletteWriteAddress, regno);
+ PM3_SLOW_WRITE_REG(par, PM3RD_PaletteData, r);
+ PM3_SLOW_WRITE_REG(par, PM3RD_PaletteData, g);
+ PM3_SLOW_WRITE_REG(par, PM3RD_PaletteData, b);
+}
+
+static void pm3fb_clear_colormap(struct pm3_par *par,
+ unsigned char r, unsigned char g, unsigned char b)
+{
+ int i;
+
+ for (i = 0; i < 256 ; i++) /* fill color map with white */
+ pm3fb_set_color(par, i, r, g, b);
+
}
/* Calculating various clock parameter */
-static unsigned long pm3fb_CalculateClock(struct pm3fb_info *l_fb_info, unsigned long reqclock, /* In kHz units */
- unsigned long refclock, /* In kHz units */
- unsigned char *prescale, /* ClkPreScale */
- unsigned char *feedback, /* ClkFeedBackScale */
- unsigned char *postscale
- /* ClkPostScale */ )
+static void pm3fb_calculate_clock(unsigned long reqclock,
+ unsigned char *prescale,
+ unsigned char *feedback,
+ unsigned char *postscale)
{
int f, pre, post;
unsigned long freq;
long freqerr = 1000;
- unsigned long actualclock = 0;
-
- DTRACE;
+ long currerr;
for (f = 1; f < 256; f++) {
for (pre = 1; pre < 256; pre++) {
for (post = 0; post < 5; post++) {
- freq =
- ((2 * refclock * f) /
- (pre * (1 << post)));
- if ((reqclock > freq - freqerr)
- && (reqclock < freq + freqerr)) {
- freqerr =
- (reqclock >
- freq) ? reqclock -
- freq : freq - reqclock;
+ freq = ((2*PM3_REF_CLOCK * f) >> post) / pre;
+ currerr = (reqclock > freq)
+ ? reqclock - freq
+ : freq - reqclock;
+ if (currerr < freqerr) {
+ freqerr = currerr;
*feedback = f;
*prescale = pre;
*postscale = post;
- actualclock = freq;
}
}
}
}
-
- return (actualclock);
}
-static int pm3fb_Shiftbpp(struct pm3fb_info *l_fb_info,
- unsigned long depth, int v)
+static inline int pm3fb_shift_bpp(unsigned long depth, int v)
{
- DTRACE;
-
switch (depth) {
case 8:
return (v >> 4);
case 32:
return (v >> 2);
}
- DPRINTK(1, "Unsupported depth %ld\n", depth);
- return (0);
-}
-
-static int pm3fb_Unshiftbpp(struct pm3fb_info *l_fb_info,
- unsigned long depth, int v)
-{
- DTRACE;
-
- switch (depth) {
- case 8:
- return (v << 4);
- case 12:
- case 15:
- case 16:
- return (v << 3);
- case 32:
- return (v << 2);
- }
- DPRINTK(1, "Unsupported depth %ld\n", depth);
- return (0);
-}
-
-static void pm3fb_mapIO(struct pm3fb_info *l_fb_info)
-{
- DTRACE;
-
- l_fb_info->vIOBase =
- ioremap((unsigned long) l_fb_info->pIOBase, PM3_REGS_SIZE);
- l_fb_info->v_fb =
- ioremap((unsigned long) l_fb_info->p_fb, l_fb_info->fb_size);
- DPRINTK(2, "IO mapping : IOBase %lx / %lx, fb %lx / %lx\n",
- (unsigned long) l_fb_info->pIOBase,
- (unsigned long) l_fb_info->vIOBase,
- (unsigned long) l_fb_info->p_fb,
- (unsigned long) l_fb_info->v_fb);
-}
-
-static void pm3fb_unmapIO(struct pm3fb_info *l_fb_info)
-{
- DTRACE;
-
- iounmap(l_fb_info->vIOBase);
- iounmap(l_fb_info->v_fb);
- l_fb_info->vIOBase = (unsigned char *) -1;
- l_fb_info->v_fb = (unsigned char *) -1;
-}
-
-#if defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 2)
-static void pm3fb_show_cur_mode(struct pm3fb_info *l_fb_info)
-{
- DPRINTK(2, "PM3Aperture0: 0x%08x\n", PM3_READ_REG(PM3Aperture0));
- DPRINTK(2, "PM3Aperture1: 0x%08x\n", PM3_READ_REG(PM3Aperture1));
- DPRINTK(2, "PM3ByAperture1Mode: 0x%08x\n",
- PM3_READ_REG(PM3ByAperture1Mode));
- DPRINTK(2, "PM3ByAperture2Mode: 0x%08x\n",
- PM3_READ_REG(PM3ByAperture2Mode));
- DPRINTK(2, "PM3ChipConfig: 0x%08x\n", PM3_READ_REG(PM3ChipConfig));
- DPRINTK(2, "PM3FIFODis: 0x%08x\n", PM3_READ_REG(PM3FIFODis));
- DPRINTK(2, "PM3HTotal: 0x%08x\n", PM3_READ_REG(PM3HTotal));
- DPRINTK(2, "PM3HbEnd: 0x%08x\n", PM3_READ_REG(PM3HbEnd));
- DPRINTK(2, "PM3HgEnd: 0x%08x\n", PM3_READ_REG(PM3HgEnd));
- DPRINTK(2, "PM3HsEnd: 0x%08x\n", PM3_READ_REG(PM3HsEnd));
- DPRINTK(2, "PM3HsStart: 0x%08x\n", PM3_READ_REG(PM3HsStart));
- DPRINTK(2, "PM3MemBypassWriteMask: 0x%08x\n",
- PM3_READ_REG(PM3MemBypassWriteMask));
- DPRINTK(2, "PM3RD_IndexControl: 0x%08x\n",
- PM3_READ_REG(PM3RD_IndexControl));
- DPRINTK(2, "PM3ScreenBase: 0x%08x\n", PM3_READ_REG(PM3ScreenBase));
- DPRINTK(2, "PM3ScreenStride: 0x%08x\n",
- PM3_READ_REG(PM3ScreenStride));
- DPRINTK(2, "PM3VClkCtl: 0x%08x\n", PM3_READ_REG(PM3VClkCtl));
- DPRINTK(2, "PM3VTotal: 0x%08x\n", PM3_READ_REG(PM3VTotal));
- DPRINTK(2, "PM3VbEnd: 0x%08x\n", PM3_READ_REG(PM3VbEnd));
- DPRINTK(2, "PM3VideoControl: 0x%08x\n",
- PM3_READ_REG(PM3VideoControl));
- DPRINTK(2, "PM3VsEnd: 0x%08x\n", PM3_READ_REG(PM3VsEnd));
- DPRINTK(2, "PM3VsStart: 0x%08x\n", PM3_READ_REG(PM3VsStart));
-
- DPRINTK(2, "PM3RD_ColorFormat: %ld\n",
- PM3_READ_DAC_REG(PM3RD_ColorFormat));
- DPRINTK(2, "PM3RD_DACControl: %ld\n",
- PM3_READ_DAC_REG(PM3RD_DACControl));
- DPRINTK(2, "PM3RD_DClk0FeedbackScale: %ld\n",
- PM3_READ_DAC_REG(PM3RD_DClk0FeedbackScale));
- DPRINTK(2, "PM3RD_DClk0PostScale: %ld\n",
- PM3_READ_DAC_REG(PM3RD_DClk0PostScale));
- DPRINTK(2, "PM3RD_DClk0PreScale: %ld\n",
- PM3_READ_DAC_REG(PM3RD_DClk0PreScale));
- DPRINTK(2, "[not set] PM3RD_IndexControl: %ld\n",
- PM3_READ_DAC_REG(PM3RD_IndexControl));
- DPRINTK(2, "PM3RD_MiscControl: %ld\n",
- PM3_READ_DAC_REG(PM3RD_MiscControl));
- DPRINTK(2, "PM3RD_PixelSize: %ld\n",
- PM3_READ_DAC_REG(PM3RD_PixelSize));
- DPRINTK(2, "PM3RD_SyncControl: %ld\n",
- PM3_READ_DAC_REG(PM3RD_SyncControl));
-}
-
-#endif /* defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 2) */
-static void pm3fb_show_cur_timing(struct pm3fb_info *l_fb_info)
-{
- u16 subvendor, subdevice;
-
- if ((!pci_read_config_word
- (l_fb_info->dev, PCI_SUBSYSTEM_VENDOR_ID, &subvendor))
- &&
- (!pci_read_config_word
- (l_fb_info->dev, PCI_SUBSYSTEM_ID, &subdevice))) {
- /* well, nothing... */
- } else {
- subvendor = subdevice = (u16)-1;
- }
-
- printk(KERN_INFO "pm3fb: memory timings for board #%ld (subvendor: 0x%hx, subdevice: 0x%hx)\n", l_fb_info->board_num, subvendor, subdevice);
- printk(KERN_INFO " PM3LocalMemCaps: 0x%08x\n",
- PM3_READ_REG(PM3LocalMemCaps));
- printk(KERN_INFO " PM3LocalMemTimings: 0x%08x\n",
- PM3_READ_REG(PM3LocalMemTimings));
- printk(KERN_INFO " PM3LocalMemControl: 0x%08x\n",
- PM3_READ_REG(PM3LocalMemControl));
- printk(KERN_INFO " PM3LocalMemRefresh: 0x%08x\n",
- PM3_READ_REG(PM3LocalMemRefresh));
- printk(KERN_INFO " PM3LocalMemPowerDown: 0x%08x\n",
- PM3_READ_REG(PM3LocalMemPowerDown));
+ DPRINTK("Unsupported depth %ld\n", depth);
+ return 0;
}
/* write the mode to registers */
-static void pm3fb_write_mode(struct pm3fb_info *l_fb_info)
+static void pm3fb_write_mode(struct fb_info *info)
{
+ struct pm3_par *par = info->par;
char tempsync = 0x00, tempmisc = 0x00;
- DTRACE;
-
- PM3_SLOW_WRITE_REG(PM3MemBypassWriteMask, 0xffffffff);
- PM3_SLOW_WRITE_REG(PM3Aperture0, 0x00000000);
- PM3_SLOW_WRITE_REG(PM3Aperture1, 0x00000000);
- PM3_SLOW_WRITE_REG(PM3FIFODis, 0x00000007);
-
- PM3_SLOW_WRITE_REG(PM3HTotal,
- pm3fb_Shiftbpp(l_fb_info,
- l_fb_info->current_par->depth,
- l_fb_info->current_par->htotal -
- 1));
- PM3_SLOW_WRITE_REG(PM3HsEnd,
- pm3fb_Shiftbpp(l_fb_info,
- l_fb_info->current_par->depth,
- l_fb_info->current_par->hsend));
- PM3_SLOW_WRITE_REG(PM3HsStart,
- pm3fb_Shiftbpp(l_fb_info,
- l_fb_info->current_par->depth,
- l_fb_info->current_par->
+ const u32 hsstart = info->var.right_margin;
+ const u32 hsend = hsstart + info->var.hsync_len;
+ const u32 hbend = hsend + info->var.left_margin;
+ const u32 xres = (info->var.xres + 31) & ~31;
+ const u32 htotal = xres + hbend;
+ const u32 vsstart = info->var.lower_margin;
+ const u32 vsend = vsstart + info->var.vsync_len;
+ const u32 vbend = vsend + info->var.upper_margin;
+ const u32 vtotal = info->var.yres + vbend;
+ const u32 width = (info->var.xres_virtual + 7) & ~7;
+
+ PM3_SLOW_WRITE_REG(par, PM3MemBypassWriteMask, 0xffffffff);
+ PM3_SLOW_WRITE_REG(par, PM3Aperture0, 0x00000000);
+ PM3_SLOW_WRITE_REG(par, PM3Aperture1, 0x00000000);
+ PM3_SLOW_WRITE_REG(par, PM3FIFODis, 0x00000007);
+
+ PM3_SLOW_WRITE_REG(par, PM3HTotal,
+ pm3fb_shift_bpp(info->var.bits_per_pixel,
+ htotal - 1));
+ PM3_SLOW_WRITE_REG(par, PM3HsEnd,
+ pm3fb_shift_bpp(info->var.bits_per_pixel,
+ hsend));
+ PM3_SLOW_WRITE_REG(par, PM3HsStart,
+ pm3fb_shift_bpp(info->var.bits_per_pixel,
hsstart));
- PM3_SLOW_WRITE_REG(PM3HbEnd,
- pm3fb_Shiftbpp(l_fb_info,
- l_fb_info->current_par->depth,
- l_fb_info->current_par->hbend));
- PM3_SLOW_WRITE_REG(PM3HgEnd,
- pm3fb_Shiftbpp(l_fb_info,
- l_fb_info->current_par->depth,
- l_fb_info->current_par->hbend));
- PM3_SLOW_WRITE_REG(PM3ScreenStride,
- pm3fb_Shiftbpp(l_fb_info,
- l_fb_info->current_par->depth,
- l_fb_info->current_par->stride));
- PM3_SLOW_WRITE_REG(PM3VTotal, l_fb_info->current_par->vtotal - 1);
- PM3_SLOW_WRITE_REG(PM3VsEnd, l_fb_info->current_par->vsend - 1);
- PM3_SLOW_WRITE_REG(PM3VsStart,
- l_fb_info->current_par->vsstart - 1);
- PM3_SLOW_WRITE_REG(PM3VbEnd, l_fb_info->current_par->vbend);
-
- switch (l_fb_info->current_par->depth) {
+ PM3_SLOW_WRITE_REG(par, PM3HbEnd,
+ pm3fb_shift_bpp(info->var.bits_per_pixel,
+ hbend));
+ PM3_SLOW_WRITE_REG(par, PM3HgEnd,
+ pm3fb_shift_bpp(info->var.bits_per_pixel,
+ hbend));
+ PM3_SLOW_WRITE_REG(par, PM3ScreenStride,
+ pm3fb_shift_bpp(info->var.bits_per_pixel,
+ width));
+ PM3_SLOW_WRITE_REG(par, PM3VTotal, vtotal - 1);
+ PM3_SLOW_WRITE_REG(par, PM3VsEnd, vsend - 1);
+ PM3_SLOW_WRITE_REG(par, PM3VsStart, vsstart - 1);
+ PM3_SLOW_WRITE_REG(par, PM3VbEnd, vbend);
+
+ switch (info->var.bits_per_pixel) {
case 8:
- PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_8BIT);
- PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_8BIT);
break;
case 15:
case 16:
#ifndef __BIG_ENDIAN
- PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_16BIT);
- PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_16BIT);
#else
- PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_16BIT |
PM3ByApertureMode_BYTESWAP_BADC);
- PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_16BIT |
PM3ByApertureMode_BYTESWAP_BADC);
#endif /* ! __BIG_ENDIAN */
case 32:
#ifndef __BIG_ENDIAN
- PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_32BIT);
- PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_32BIT);
#else
- PM3_SLOW_WRITE_REG(PM3ByAperture1Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture1Mode,
PM3ByApertureMode_PIXELSIZE_32BIT |
PM3ByApertureMode_BYTESWAP_DCBA);
- PM3_SLOW_WRITE_REG(PM3ByAperture2Mode,
+ PM3_SLOW_WRITE_REG(par, PM3ByAperture2Mode,
PM3ByApertureMode_PIXELSIZE_32BIT |
PM3ByApertureMode_BYTESWAP_DCBA);
#endif /* ! __BIG_ENDIAN */
break;
default:
- DPRINTK(1, "Unsupported depth %d\n",
- l_fb_info->current_par->depth);
+ DPRINTK("Unsupported depth %d\n",
+ info->var.bits_per_pixel);
break;
}
* sync options in PM3RD_SyncControl. --rmk
*/
{
- unsigned int video = l_fb_info->current_par->video;
+ unsigned int video = par->video;
video &= ~(PM3VideoControl_HSYNC_MASK |
PM3VideoControl_VSYNC_MASK);
video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
PM3VideoControl_VSYNC_ACTIVE_HIGH;
- PM3_SLOW_WRITE_REG(PM3VideoControl, video);
+ PM3_SLOW_WRITE_REG(par, PM3VideoControl, video);
}
- PM3_SLOW_WRITE_REG(PM3VClkCtl,
- (PM3_READ_REG(PM3VClkCtl) & 0xFFFFFFFC));
- PM3_SLOW_WRITE_REG(PM3ScreenBase, l_fb_info->current_par->base);
- PM3_SLOW_WRITE_REG(PM3ChipConfig,
- (PM3_READ_REG(PM3ChipConfig) & 0xFFFFFFFD));
+ PM3_SLOW_WRITE_REG(par, PM3VClkCtl,
+ (PM3_READ_REG(par, PM3VClkCtl) & 0xFFFFFFFC));
+ PM3_SLOW_WRITE_REG(par, PM3ScreenBase, par->base);
+ PM3_SLOW_WRITE_REG(par, PM3ChipConfig,
+ (PM3_READ_REG(par, PM3ChipConfig) & 0xFFFFFFFD));
{
- unsigned char m; /* ClkPreScale */
- unsigned char n; /* ClkFeedBackScale */
- unsigned char p; /* ClkPostScale */
- (void)pm3fb_CalculateClock(l_fb_info, l_fb_info->current_par->pixclock, PM3_REF_CLOCK, &m, &n, &p);
-
- DPRINTK(2,
- "Pixclock: %d, Pre: %d, Feedback: %d, Post: %d\n",
- l_fb_info->current_par->pixclock, (int) m, (int) n,
- (int) p);
-
- PM3_WRITE_DAC_REG(PM3RD_DClk0PreScale, m);
- PM3_WRITE_DAC_REG(PM3RD_DClk0FeedbackScale, n);
- PM3_WRITE_DAC_REG(PM3RD_DClk0PostScale, p);
+ unsigned char uninitialized_var(m); /* ClkPreScale */
+ unsigned char uninitialized_var(n); /* ClkFeedBackScale */
+ unsigned char uninitialized_var(p); /* ClkPostScale */
+ unsigned long pixclock = PICOS2KHZ(info->var.pixclock);
+
+ (void)pm3fb_calculate_clock(pixclock, &m, &n, &p);
+
+ DPRINTK("Pixclock: %ld, Pre: %d, Feedback: %d, Post: %d\n",
+ pixclock, (int) m, (int) n, (int) p);
+
+ PM3_WRITE_DAC_REG(par, PM3RD_DClk0PreScale, m);
+ PM3_WRITE_DAC_REG(par, PM3RD_DClk0FeedbackScale, n);
+ PM3_WRITE_DAC_REG(par, PM3RD_DClk0PostScale, p);
}
/*
- PM3_WRITE_DAC_REG(PM3RD_IndexControl, 0x00);
+ PM3_WRITE_DAC_REG(par, PM3RD_IndexControl, 0x00);
*/
/*
- PM3_SLOW_WRITE_REG(PM3RD_IndexControl, 0x00);
+ PM3_SLOW_WRITE_REG(par, PM3RD_IndexControl, 0x00);
*/
- if ((l_fb_info->current_par->video & PM3VideoControl_HSYNC_MASK) ==
+ if ((par->video & PM3VideoControl_HSYNC_MASK) ==
PM3VideoControl_HSYNC_ACTIVE_HIGH)
tempsync |= PM3RD_SyncControl_HSYNC_ACTIVE_HIGH;
- if ((l_fb_info->current_par->video & PM3VideoControl_VSYNC_MASK) ==
+ if ((par->video & PM3VideoControl_VSYNC_MASK) ==
PM3VideoControl_VSYNC_ACTIVE_HIGH)
tempsync |= PM3RD_SyncControl_VSYNC_ACTIVE_HIGH;
-
- PM3_WRITE_DAC_REG(PM3RD_SyncControl, tempsync);
- DPRINTK(2, "PM3RD_SyncControl: %d\n", tempsync);
-
- if (flatpanel[l_fb_info->board_num])
- {
- PM3_WRITE_DAC_REG(PM3RD_DACControl, PM3RD_DACControl_BLANK_PEDESTAL_ENABLE);
- PM3_WAIT(2);
- PM3_WRITE_REG(PM3VSConfiguration, 0x06);
- PM3_WRITE_REG(0x5a00, 1 << 14); /* black magic... */
- tempmisc = PM3RD_MiscControl_VSB_OUTPUT_ENABLE;
- }
- else
- PM3_WRITE_DAC_REG(PM3RD_DACControl, 0x00);
- switch (l_fb_info->current_par->depth) {
+ PM3_WRITE_DAC_REG(par, PM3RD_SyncControl, tempsync);
+ DPRINTK("PM3RD_SyncControl: %d\n", tempsync);
+
+ PM3_WRITE_DAC_REG(par, PM3RD_DACControl, 0x00);
+
+ switch (info->var.bits_per_pixel) {
case 8:
- PM3_WRITE_DAC_REG(PM3RD_PixelSize,
+ PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_8_BIT_PIXELS);
- PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
+ PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_CI8_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
tempmisc |= PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
break;
case 12:
- PM3_WRITE_DAC_REG(PM3RD_PixelSize,
+ PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_16_BIT_PIXELS);
- PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
+ PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_4444_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
- break;
+ break;
case 15:
- PM3_WRITE_DAC_REG(PM3RD_PixelSize,
+ PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_16_BIT_PIXELS);
- PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
+ PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_5551_FRONT_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
- break;
+ break;
case 16:
- PM3_WRITE_DAC_REG(PM3RD_PixelSize,
+ PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_16_BIT_PIXELS);
- PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
+ PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_565_FRONT_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW |
PM3RD_ColorFormat_LINEAR_COLOR_EXT_ENABLE);
PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
break;
case 32:
- PM3_WRITE_DAC_REG(PM3RD_PixelSize,
+ PM3_WRITE_DAC_REG(par, PM3RD_PixelSize,
PM3RD_PixelSize_32_BIT_PIXELS);
- PM3_WRITE_DAC_REG(PM3RD_ColorFormat,
+ PM3_WRITE_DAC_REG(par, PM3RD_ColorFormat,
PM3RD_ColorFormat_8888_COLOR |
PM3RD_ColorFormat_COLOR_ORDER_BLUE_LOW);
tempmisc |= PM3RD_MiscControl_DIRECTCOLOR_ENABLE |
PM3RD_MiscControl_HIGHCOLOR_RES_ENABLE;
break;
}
- PM3_WRITE_DAC_REG(PM3RD_MiscControl, tempmisc);
-
- PM3_SHOW_CUR_MODE;
+ PM3_WRITE_DAC_REG(par, PM3RD_MiscControl, tempmisc);
}
-static void pm3fb_read_mode(struct pm3fb_info *l_fb_info,
- struct pm3fb_par *curpar)
-{
- unsigned long pixsize1, pixsize2, clockused;
- unsigned long pre, feedback, post;
-
- DTRACE;
-
- clockused = PM3_READ_REG(PM3VClkCtl);
+/*
+ * hardware independent functions
+ */
+int pm3fb_init(void);
+int pm3fb_setup(char*);
- switch (clockused) {
- case 3:
- pre = PM3_READ_DAC_REG(PM3RD_DClk3PreScale);
- feedback = PM3_READ_DAC_REG(PM3RD_DClk3FeedbackScale);
- post = PM3_READ_DAC_REG(PM3RD_DClk3PostScale);
+static int pm3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+{
+ u32 lpitch;
- DPRINTK(2,
- "DClk3 parameter: Pre: %ld, Feedback: %ld, Post: %ld ; giving pixclock: %ld\n",
- pre, feedback, post, PM3_SCALE_TO_CLOCK(pre,
- feedback,
- post));
+ var->transp.offset = 0;
+ var->transp.length = 0;
+ switch(var->bits_per_pixel) {
+ case 8:
+ var->red.length = var->green.length = var->blue.length = 8;
+ var->red.offset = var->green.offset = var->blue.offset = 0;
break;
- case 2:
- pre = PM3_READ_DAC_REG(PM3RD_DClk2PreScale);
- feedback = PM3_READ_DAC_REG(PM3RD_DClk2FeedbackScale);
- post = PM3_READ_DAC_REG(PM3RD_DClk2PostScale);
-
- DPRINTK(2,
- "DClk2 parameter: Pre: %ld, Feedback: %ld, Post: %ld ; giving pixclock: %ld\n",
- pre, feedback, post, PM3_SCALE_TO_CLOCK(pre,
- feedback,
- post));
+ case 12:
+ var->red.offset = 8;
+ var->red.length = 4;
+ var->green.offset = 4;
+ var->green.length = 4;
+ var->blue.offset = 0;
+ var->blue.length = 4;
+ var->transp.offset = 12;
+ var->transp.length = 4;
+ case 15:
+ var->red.offset = 10;
+ var->red.length = 5;
+ var->green.offset = 5;
+ var->green.length = 5;
+ var->blue.offset = 0;
+ var->blue.length = 5;
+ var->transp.offset = 15;
+ var->transp.length = 1;
break;
- case 1:
- pre = PM3_READ_DAC_REG(PM3RD_DClk1PreScale);
- feedback = PM3_READ_DAC_REG(PM3RD_DClk1FeedbackScale);
- post = PM3_READ_DAC_REG(PM3RD_DClk1PostScale);
-
- DPRINTK(2,
- "DClk1 parameter: Pre: %ld, Feedback: %ld, Post: %ld ; giving pixclock: %ld\n",
- pre, feedback, post, PM3_SCALE_TO_CLOCK(pre,
- feedback,
- post));
+ case 16:
+ var->red.offset = 11;
+ var->red.length = 5;
+ var->green.offset = 5;
+ var->green.length = 6;
+ var->blue.offset = 0;
+ var->blue.length = 5;
break;
- case 0:
- pre = PM3_READ_DAC_REG(PM3RD_DClk0PreScale);
- feedback = PM3_READ_DAC_REG(PM3RD_DClk0FeedbackScale);
- post = PM3_READ_DAC_REG(PM3RD_DClk0PostScale);
-
- DPRINTK(2,
- "DClk0 parameter: Pre: %ld, Feedback: %ld, Post: %ld ; giving pixclock: %ld\n",
- pre, feedback, post, PM3_SCALE_TO_CLOCK(pre,
- feedback,
- post));
+ case 32:
+ var->transp.offset = 24;
+ var->transp.length = 8;
+ var->red.offset = 16;
+ var->green.offset = 8;
+ var->blue.offset = 0;
+ var->red.length = var->green.length = var->blue.length = 8;
break;
default:
- pre = feedback = post = 0;
- DPRINTK(1, "Unknowk D clock used : %ld\n", clockused);
- break;
+ DPRINTK("depth not supported: %u\n", var->bits_per_pixel);
+ return -EINVAL;
}
+ var->height = var->width = -1;
- curpar->pixclock = PM3_SCALE_TO_CLOCK(pre, feedback, post);
-
- pixsize1 =
- PM3ByApertureMode_PIXELSIZE_MASK &
- (PM3_READ_REG(PM3ByAperture1Mode));
- pixsize2 =
- PM3ByApertureMode_PIXELSIZE_MASK &
- (PM3_READ_REG(PM3ByAperture2Mode));
-
- DASSERT((pixsize1 == pixsize2),
- "pixsize the same in both aperture\n");
+ if (var->xres != var->xres_virtual) {
+ DPRINTK("virtual x resolution != physical x resolution not supported\n");
+ return -EINVAL;
+ }
- if (pixsize1 & PM3ByApertureMode_PIXELSIZE_32BIT)
- curpar->depth = 32;
- else if (pixsize1 & PM3ByApertureMode_PIXELSIZE_16BIT)
- {
- curpar->depth = 16;
+ if (var->yres > var->yres_virtual) {
+ DPRINTK("virtual y resolution < physical y resolution not possible\n");
+ return -EINVAL;
}
- else
- curpar->depth = 8;
-
- /* not sure if I need to add one on the next ; it give better result with */
- curpar->htotal =
- pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
- 1 + PM3_READ_REG(PM3HTotal));
- curpar->hsend =
- pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
- PM3_READ_REG(PM3HsEnd));
- curpar->hsstart =
- pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
- PM3_READ_REG(PM3HsStart));
- curpar->hbend =
- pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
- PM3_READ_REG(PM3HbEnd));
-
- curpar->stride =
- pm3fb_Unshiftbpp(l_fb_info, curpar->depth,
- PM3_READ_REG(PM3ScreenStride));
-
- curpar->vtotal = 1 + PM3_READ_REG(PM3VTotal);
- curpar->vsend = 1 + PM3_READ_REG(PM3VsEnd);
- curpar->vsstart = 1 + PM3_READ_REG(PM3VsStart);
- curpar->vbend = PM3_READ_REG(PM3VbEnd);
-
- curpar->video = PM3_READ_REG(PM3VideoControl);
-
- curpar->base = PM3_READ_REG(PM3ScreenBase);
- curpar->width = curpar->htotal - curpar->hbend; /* make virtual == displayed resolution */
- curpar->height = curpar->vtotal - curpar->vbend;
-
- DPRINTK(2, "Found : %d * %d, %d Khz, stride is %08x\n",
- curpar->width, curpar->height, curpar->pixclock,
- curpar->stride);
-}
-static unsigned long pm3fb_size_memory(struct pm3fb_info *l_fb_info)
-{
- unsigned long memsize = 0, tempBypass, i, temp1, temp2;
- u16 subvendor, subdevice;
- pm3fb_timing_result ptr;
-
- DTRACE;
-
- l_fb_info->fb_size = 64 * 1024 * 1024; /* pm3 aperture always 64 MB */
- pm3fb_mapIO(l_fb_info); /* temporary map IO */
-
- DASSERT((l_fb_info->vIOBase != NULL),
- "IO successfully mapped before mem detect\n");
- DASSERT((l_fb_info->v_fb != NULL),
- "FB successfully mapped before mem detect\n");
-
- /* card-specific stuff, *before* accessing *any* FB memory */
- if ((!pci_read_config_word
- (l_fb_info->dev, PCI_SUBSYSTEM_VENDOR_ID, &subvendor))
- &&
- (!pci_read_config_word
- (l_fb_info->dev, PCI_SUBSYSTEM_ID, &subdevice))) {
- i = 0; l_fb_info->board_type = 0;
- while ((cardbase[i].cardname[0]) && !(l_fb_info->board_type)) {
- if ((cardbase[i].subvendor == subvendor) &&
- (cardbase[i].subdevice == subdevice) &&
- (cardbase[i].func == PCI_FUNC(l_fb_info->dev->devfn))) {
- DPRINTK(2, "Card #%ld is an %s\n",
- l_fb_info->board_num,
- cardbase[i].cardname);
- if (cardbase[i].specific_setup)
- cardbase[i].specific_setup(l_fb_info);
- l_fb_info->board_type = i;
- }
- i++;
- }
- if (!l_fb_info->board_type) {
- DPRINTK(1, "Card #%ld is an unknown 0x%04x / 0x%04x\n",
- l_fb_info->board_num, subvendor, subdevice);
- }
- } else {
- printk(KERN_ERR "pm3fb: Error: pci_read_config_word failed, board #%ld\n",
- l_fb_info->board_num);
+ if (var->xoffset) {
+ DPRINTK("xoffset not supported\n");
+ return -EINVAL;
}
- if (printtimings)
- pm3fb_show_cur_timing(l_fb_info);
-
- /* card-specific setup is done, we preserve the final
- memory timing for future reference */
- if ((ptr = pm3fb_preserve_memory_timings(l_fb_info)) == pm3fb_timing_problem) { /* memory timings were wrong ! oops.... */
- return(0);
+ if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
+ DPRINTK("interlace not supported\n");
+ return -EINVAL;
}
-
- tempBypass = PM3_READ_REG(PM3MemBypassWriteMask);
- DPRINTK(2, "PM3MemBypassWriteMask was: 0x%08lx\n", tempBypass);
+ var->xres = (var->xres + 31) & ~31; /* could sometimes be 8 */
+ lpitch = var->xres * ((var->bits_per_pixel + 7)>>3);
- PM3_SLOW_WRITE_REG(PM3MemBypassWriteMask, 0xFFFFFFFF);
+ if (var->xres < 200 || var->xres > 2048) {
+ DPRINTK("width not supported: %u\n", var->xres);
+ return -EINVAL;
+ }
- /* pm3 split up memory, replicates, and do a lot of nasty stuff IMHO ;-) */
- for (i = 0; i < 32; i++) {
- fb_writel(i * 0x00345678,
- (l_fb_info->v_fb + (i * 1048576)));
- mb();
- temp1 = fb_readl((l_fb_info->v_fb + (i * 1048576)));
+ if (var->yres < 200 || var->yres > 4095) {
+ DPRINTK("height not supported: %u\n", var->yres);
+ return -EINVAL;
+ }
- /* Let's check for wrapover, write will fail at 16MB boundary */
- if (temp1 == (i * 0x00345678))
- memsize = i;
- else
- break;
+ if (lpitch * var->yres_virtual > info->fix.smem_len) {
+ DPRINTK("no memory for screen (%ux%ux%u)\n",
+ var->xres, var->yres_virtual, var->bits_per_pixel);
+ return -EINVAL;
+ }
+
+ if (PICOS2KHZ(var->pixclock) > PM3_MAX_PIXCLOCK) {
+ DPRINTK("pixclock too high (%ldKHz)\n", PICOS2KHZ(var->pixclock));
+ return -EINVAL;
}
- DPRINTK(2, "First detect pass already got %ld MB\n", memsize + 1);
+ var->accel_flags = 0; /* Can't mmap if this is on */
- if (memsize == i) {
- for (i = 0; i < 32; i++) {
- /* Clear first 32MB ; 0 is 0, no need to byteswap */
- writel(0x0000000,
- (l_fb_info->v_fb + (i * 1048576)));
- mb();
- }
+ DPRINTK("Checking graphics mode at %dx%d depth %d\n",
+ var->xres, var->yres, var->bits_per_pixel);
+ return 0;
+}
- for (i = 32; i < 64; i++) {
- fb_writel(i * 0x00345678,
- (l_fb_info->v_fb + (i * 1048576)));
- mb();
- temp1 =
- fb_readl((l_fb_info->v_fb + (i * 1048576)));
- temp2 =
- fb_readl((l_fb_info->v_fb +
- ((i - 32) * 1048576)));
- if ((temp1 == (i * 0x00345678)) && (temp2 == 0)) /* different value, different RAM... */
- memsize = i;
- else
- break;
- }
- }
+static int pm3fb_set_par(struct fb_info *info)
+{
+ struct pm3_par *par = info->par;
+ const u32 xres = (info->var.xres + 31) & ~31;
+ const int depth = (info->var.bits_per_pixel + 7) & ~7;
- DPRINTK(2, "Second detect pass got %ld MB\n", memsize + 1);
+ par->base = pm3fb_shift_bpp(info->var.bits_per_pixel,
+ (info->var.yoffset * xres)
+ + info->var.xoffset);
+ par->video = 0;
- PM3_SLOW_WRITE_REG(PM3MemBypassWriteMask, tempBypass);
+ if (info->var.sync & FB_SYNC_HOR_HIGH_ACT)
+ par->video |= PM3VideoControl_HSYNC_ACTIVE_HIGH;
+ else
+ par->video |= PM3VideoControl_HSYNC_ACTIVE_LOW;
- pm3fb_unmapIO(l_fb_info);
- memsize = 1048576 * (memsize + 1);
+ if (info->var.sync & FB_SYNC_VERT_HIGH_ACT)
+ par->video |= PM3VideoControl_VSYNC_ACTIVE_HIGH;
+ else
+ par->video |= PM3VideoControl_VSYNC_ACTIVE_LOW;
- DPRINTK(2, "Returning 0x%08lx bytes\n", memsize);
+ if ((info->var.vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE)
+ par->video |= PM3VideoControl_LINE_DOUBLE_ON;
+ else
+ par->video |= PM3VideoControl_LINE_DOUBLE_OFF;
- if (forcesize[l_fb_info->board_num] && ((forcesize[l_fb_info->board_num] * 1048576) != memsize))
- {
- printk(KERN_WARNING "pm3fb: mismatch between probed (%ld MB) and specified (%hd MB) memory size, using SPECIFIED !\n", memsize, forcesize[l_fb_info->board_num]);
- memsize = 1048576 * forcesize[l_fb_info->board_num];
+ if (info->var.activate == FB_ACTIVATE_NOW)
+ par->video |= PM3VideoControl_ENABLE;
+ else {
+ par->video |= PM3VideoControl_DISABLE;
+ DPRINTK("PM3Video disabled\n");
}
-
- l_fb_info->fb_size = memsize;
-
- if (ptr == pm3fb_timing_retry)
- {
- printk(KERN_WARNING "pm3fb: retrying memory timings check");
- if (pm3fb_try_memory_timings(l_fb_info) == pm3fb_timing_problem)
- return(0);
+ switch (depth) {
+ case 8:
+ par->video |= PM3VideoControl_PIXELSIZE_8BIT;
+ break;
+ case 12:
+ case 15:
+ case 16:
+ par->video |= PM3VideoControl_PIXELSIZE_16BIT;
+ break;
+ case 32:
+ par->video |= PM3VideoControl_PIXELSIZE_32BIT;
+ break;
+ default:
+ DPRINTK("Unsupported depth\n");
+ break;
}
-
- return (memsize);
-}
-
-static void pm3fb_clear_memory(struct pm3fb_info *l_fb_info, u32 cc)
-{
- int i;
- DTRACE;
+ info->fix.visual =
+ (depth == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
+ info->fix.line_length = ((info->var.xres_virtual + 7) & ~7)
+ * depth / 8;
- for (i = 0; i < (l_fb_info->fb_size / sizeof(u32)) ; i++) /* clear entire FB memory to black */
- {
- fb_writel(cc, (l_fb_info->v_fb + (i * sizeof(u32))));
- }
+/* pm3fb_clear_memory(info, 0);*/
+ pm3fb_clear_colormap(par, 0, 0, 0);
+ PM3_WRITE_DAC_REG(par, PM3RD_CursorMode,
+ PM3RD_CursorMode_CURSOR_DISABLE);
+ pm3fb_write_mode(info);
+ return 0;
}
-static void pm3fb_clear_colormap(struct pm3fb_info *l_fb_info, unsigned char r, unsigned char g, unsigned char b)
+static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green,
+ unsigned blue, unsigned transp,
+ struct fb_info *info)
{
- int i;
-
- DTRACE;
+ struct pm3_par *par = info->par;
+
+ if (regno >= 256) /* no. of hw registers */
+ return -EINVAL;
+
+ /* grayscale works only partially under directcolor */
+ if (info->var.grayscale) {
+ /* grayscale = 0.30*R + 0.59*G + 0.11*B */
+ red = green = blue = (red * 77 + green * 151 + blue * 28) >> 8;
+ }
+
+ /* Directcolor:
+ * var->{color}.offset contains start of bitfield
+ * var->{color}.length contains length of bitfield
+ * {hardwarespecific} contains width of DAC
+ * pseudo_palette[X] is programmed to (X << red.offset) |
+ * (X << green.offset) |
+ * (X << blue.offset)
+ * RAMDAC[X] is programmed to (red, green, blue)
+ * color depth = SUM(var->{color}.length)
+ *
+ * Pseudocolor:
+ * var->{color}.offset is 0
+ * var->{color}.length contains width of DAC or the number of unique
+ * colors available (color depth)
+ * pseudo_palette is not used
+ * RAMDAC[X] is programmed to (red, green, blue)
+ * color depth = var->{color}.length
+ */
- for (i = 0; i < 256 ; i++) /* fill color map with white */
- pm3fb_set_color(l_fb_info, i, r, g, b);
+ /*
+ * This is the point where the color is converted to something that
+ * is acceptable by the hardware.
+ */
+#define CNVT_TOHW(val,width) ((((val)<<(width))+0x7FFF-(val))>>16)
+ red = CNVT_TOHW(red, info->var.red.length);
+ green = CNVT_TOHW(green, info->var.green.length);
+ blue = CNVT_TOHW(blue, info->var.blue.length);
+ transp = CNVT_TOHW(transp, info->var.transp.length);
+#undef CNVT_TOHW
+
+ if (info->fix.visual == FB_VISUAL_TRUECOLOR ||
+ info->fix.visual == FB_VISUAL_DIRECTCOLOR) {
+ u32 v;
+
+ if (regno >= 16)
+ return -EINVAL;
+
+ v = (red << info->var.red.offset) |
+ (green << info->var.green.offset) |
+ (blue << info->var.blue.offset) |
+ (transp << info->var.transp.offset);
+
+ switch (info->var.bits_per_pixel) {
+ case 8:
+ break;
+ case 16:
+ case 24:
+ case 32:
+ ((u32*)(info->pseudo_palette))[regno] = v;
+ break;
+ }
+ return 0;
+ }
+ else if (info->fix.visual == FB_VISUAL_PSEUDOCOLOR)
+ pm3fb_set_color(par, regno, red, green, blue);
+ return 0;
}
-/* common initialisation */
-static void pm3fb_common_init(struct pm3fb_info *l_fb_info)
+static int pm3fb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *info)
{
- DTRACE;
+ struct pm3_par *par = info->par;
+ const u32 xres = (var->xres + 31) & ~31;
- DPRINTK(2, "Initializing board #%ld @ %lx\n", l_fb_info->board_num,
- (unsigned long) l_fb_info);
+ par->base = pm3fb_shift_bpp(var->bits_per_pixel,
+ (var->yoffset * xres)
+ + var->xoffset);
+ PM3_SLOW_WRITE_REG(par, PM3ScreenBase, par->base);
+ return 0;
+}
- strcpy(l_fb_info->gen.info.modename, permedia3_name);
- disp[l_fb_info->board_num].scrollmode = 0; /* SCROLL_YNOMOVE; *//* 0 means "let fbcon choose" */
- l_fb_info->gen.parsize = sizeof(struct pm3fb_par);
- l_fb_info->gen.info.changevar = NULL;
- l_fb_info->gen.info.fbops = &pm3fb_ops;
- l_fb_info->gen.info.disp = &(disp[l_fb_info->board_num]);
- if (fontn[l_fb_info->board_num][0])
- strcpy(l_fb_info->gen.info.fontname,
- fontn[l_fb_info->board_num]);
- l_fb_info->gen.info.switch_con = &fbgen_switch;
- l_fb_info->gen.info.updatevar = &fbgen_update_var; /* */
- l_fb_info->gen.info.flags = FBINFO_FLAG_DEFAULT;
+static int pm3fb_blank(int blank_mode, struct fb_info *info)
+{
+ struct pm3_par *par = info->par;
+ u32 video = par->video;
- pm3fb_mapIO(l_fb_info);
-
- pm3fb_clear_memory(l_fb_info, 0);
- pm3fb_clear_colormap(l_fb_info, 0, 0, 0);
-
- (void) fbgen_get_var(&(disp[l_fb_info->board_num]).var, -1,
- &l_fb_info->gen.info);
-
- if (depth[l_fb_info->board_num]) /* override mode-defined depth */
- {
- pm3fb_encode_depth(&(disp[l_fb_info->board_num]).var, depth[l_fb_info->board_num]);
- (disp[l_fb_info->board_num]).var.bits_per_pixel = depth2bpp(depth[l_fb_info->board_num]);
- }
-
- (void) fbgen_do_set_var(&(disp[l_fb_info->board_num]).var, 1,
- &l_fb_info->gen);
-
- fbgen_set_disp(-1, &l_fb_info->gen);
-
- do_install_cmap(0, &l_fb_info->gen.info);
-
- if (register_framebuffer(&l_fb_info->gen.info) < 0) {
- DPRINTK(1, "Couldn't register framebuffer\n");
- return;
- }
-
- PM3_WRITE_DAC_REG(PM3RD_CursorMode,
- PM3RD_CursorMode_CURSOR_DISABLE);
-
- PM3_SHOW_CUR_MODE;
-
- pm3fb_write_mode(l_fb_info);
-
- printk("fb%d: %s, using %uK of video memory (%s)\n",
- l_fb_info->gen.info.node,
- permedia3_name, (u32) (l_fb_info->fb_size >> 10),
- cardbase[l_fb_info->board_type].cardname);
-}
-
-/* **************************************************** */
-/* ***** accelerated permedia3-specific functions ***** */
-/* **************************************************** */
-#ifdef PM3FB_USE_ACCEL
-static void pm3fb_wait_pm3(struct pm3fb_info *l_fb_info)
-{
- DTRACE;
-
- PM3_SLOW_WRITE_REG(PM3FilterMode, PM3FilterModeSync);
- PM3_SLOW_WRITE_REG(PM3Sync, 0);
- mb();
- do {
- while ((PM3_READ_REG(PM3OutFIFOWords)) == 0);
- rmb();
- } while ((PM3_READ_REG(PM3OutputFifo)) != PM3Sync_Tag);
-}
-
-static void pm3fb_init_engine(struct pm3fb_info *l_fb_info)
-{
- PM3_SLOW_WRITE_REG(PM3FilterMode, PM3FilterModeSync);
- PM3_SLOW_WRITE_REG(PM3StatisticMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3DeltaMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3RasterizerMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3ScissorMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3LineStippleMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3AreaStippleMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3GIDMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3DepthMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3StencilMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3StencilData, 0x0);
- PM3_SLOW_WRITE_REG(PM3ColorDDAMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureCoordMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureIndexMode0, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureIndexMode1, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureReadMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3LUTMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureFilterMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureCompositeMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureApplicationMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureCompositeColorMode1, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureCompositeAlphaMode1, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureCompositeColorMode0, 0x0);
- PM3_SLOW_WRITE_REG(PM3TextureCompositeAlphaMode0, 0x0);
- PM3_SLOW_WRITE_REG(PM3FogMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3ChromaTestMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3AlphaTestMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3AntialiasMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3YUVMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3AlphaBlendColorMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3AlphaBlendAlphaMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3DitherMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3LogicalOpMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3RouterMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3Window, 0x0);
-
- PM3_SLOW_WRITE_REG(PM3Config2D, 0x0);
-
- PM3_SLOW_WRITE_REG(PM3SpanColorMask, 0xffffffff);
-
- PM3_SLOW_WRITE_REG(PM3XBias, 0x0);
- PM3_SLOW_WRITE_REG(PM3YBias, 0x0);
- PM3_SLOW_WRITE_REG(PM3DeltaControl, 0x0);
-
- PM3_SLOW_WRITE_REG(PM3BitMaskPattern, 0xffffffff);
-
- PM3_SLOW_WRITE_REG(PM3FBDestReadEnables,
- PM3FBDestReadEnables_E(0xff) |
- PM3FBDestReadEnables_R(0xff) |
- PM3FBDestReadEnables_ReferenceAlpha(0xff));
- PM3_SLOW_WRITE_REG(PM3FBDestReadBufferAddr0, 0x0);
- PM3_SLOW_WRITE_REG(PM3FBDestReadBufferOffset0, 0x0);
- PM3_SLOW_WRITE_REG(PM3FBDestReadBufferWidth0,
- PM3FBDestReadBufferWidth_Width(l_fb_info->
- current_par->
- width));
-
- PM3_SLOW_WRITE_REG(PM3FBDestReadMode,
- PM3FBDestReadMode_ReadEnable |
- PM3FBDestReadMode_Enable0);
- PM3_SLOW_WRITE_REG(PM3FBSourceReadBufferAddr, 0x0);
- PM3_SLOW_WRITE_REG(PM3FBSourceReadBufferOffset, 0x0);
- PM3_SLOW_WRITE_REG(PM3FBSourceReadBufferWidth,
- PM3FBSourceReadBufferWidth_Width(l_fb_info->
- current_par->
- width));
- PM3_SLOW_WRITE_REG(PM3FBSourceReadMode,
- PM3FBSourceReadMode_Blocking |
- PM3FBSourceReadMode_ReadEnable);
-
- {
- unsigned long rm = 1;
- switch (l_fb_info->current_par->depth) {
- case 8:
- PM3_SLOW_WRITE_REG(PM3PixelSize,
- PM3PixelSize_GLOBAL_8BIT);
- break;
- case 12:
- case 15:
- case 16:
- PM3_SLOW_WRITE_REG(PM3PixelSize,
- PM3PixelSize_GLOBAL_16BIT);
- break;
- case 32:
- PM3_SLOW_WRITE_REG(PM3PixelSize,
- PM3PixelSize_GLOBAL_32BIT);
- break;
- default:
- DPRINTK(1, "Unsupported depth %d\n",
- l_fb_info->current_par->depth);
- break;
- }
- PM3_SLOW_WRITE_REG(PM3RasterizerMode, rm);
- }
-
- PM3_SLOW_WRITE_REG(PM3FBSoftwareWriteMask, 0xffffffff);
- PM3_SLOW_WRITE_REG(PM3FBHardwareWriteMask, 0xffffffff);
- PM3_SLOW_WRITE_REG(PM3FBWriteMode,
- PM3FBWriteMode_WriteEnable |
- PM3FBWriteMode_OpaqueSpan |
- PM3FBWriteMode_Enable0);
- PM3_SLOW_WRITE_REG(PM3FBWriteBufferAddr0, 0x0);
- PM3_SLOW_WRITE_REG(PM3FBWriteBufferOffset0, 0x0);
- PM3_SLOW_WRITE_REG(PM3FBWriteBufferWidth0,
- PM3FBWriteBufferWidth_Width(l_fb_info->
- current_par->
- width));
-
- PM3_SLOW_WRITE_REG(PM3SizeOfFramebuffer, 0x0);
- {
- unsigned long sofb = (8UL * l_fb_info->fb_size) /
- ((depth2bpp(l_fb_info->current_par->depth))
- * l_fb_info->current_par->width); /* size in lines of FB */
- if (sofb > 4095)
- PM3_SLOW_WRITE_REG(PM3SizeOfFramebuffer, 4095);
- else
- PM3_SLOW_WRITE_REG(PM3SizeOfFramebuffer, sofb);
-
- switch (l_fb_info->current_par->depth) {
- case 8:
- PM3_SLOW_WRITE_REG(PM3DitherMode,
- (1 << 10) | (2 << 3));
- break;
- case 12:
- case 15:
- case 16:
- PM3_SLOW_WRITE_REG(PM3DitherMode,
- (1 << 10) | (1 << 3));
- break;
- case 32:
- PM3_SLOW_WRITE_REG(PM3DitherMode,
- (1 << 10) | (0 << 3));
- break;
- default:
- DPRINTK(1, "Unsupported depth %d\n",
- l_fb_info->current_par->depth);
- break;
- }
- }
-
- PM3_SLOW_WRITE_REG(PM3dXDom, 0x0);
- PM3_SLOW_WRITE_REG(PM3dXSub, 0x0);
- PM3_SLOW_WRITE_REG(PM3dY, (1 << 16));
- PM3_SLOW_WRITE_REG(PM3StartXDom, 0x0);
- PM3_SLOW_WRITE_REG(PM3StartXSub, 0x0);
- PM3_SLOW_WRITE_REG(PM3StartY, 0x0);
- PM3_SLOW_WRITE_REG(PM3Count, 0x0);
-
-/* Disable LocalBuffer. better safe than sorry */
- PM3_SLOW_WRITE_REG(PM3LBDestReadMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3LBDestReadEnables, 0x0);
- PM3_SLOW_WRITE_REG(PM3LBSourceReadMode, 0x0);
- PM3_SLOW_WRITE_REG(PM3LBWriteMode, 0x0);
-
- pm3fb_wait_pm3(l_fb_info);
-}
-
-#ifdef FBCON_HAS_CFB32
-static void pm3fb_cfb32_clear(struct vc_data *conp,
- struct display *p,
- int sy, int sx, int height, int width)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- u32 c;
-
- DTRACE;
-
- sx = sx * fontwidth(p);
- width = width * fontwidth(p);
- sy = sy * fontheight(p);
- height = height * fontheight(p);
- c = ((u32 *) p->dispsw_data)[attr_bgcol_ec(p, conp)];
-
- /* block fills in 32bpp are hard, but in low res (width <= 1600 :-)
- we can use 16bpp operations, but not if NoWriteMask is on (SDRAM) */
- if ((l_fb_info->current_par->width > 1600) ||
- (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)) {
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3ForegroundColor, c);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(sx)) |
- (PM3RectanglePosition_YOffset(sy)));
-
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(width)) |
- (PM3Render2D_Height(height)));
- } else {
- PM3_WAIT(8);
-
- PM3_WRITE_REG(PM3FBBlockColor, c);
-
- PM3_WRITE_REG(PM3PixelSize, PM3PixelSize_GLOBAL_16BIT);
-
- PM3_WRITE_REG(PM3FBWriteBufferWidth0,
- PM3FBWriteBufferWidth_Width(l_fb_info->
- current_par->
- width << 1));
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(sx << 1)) |
- (PM3RectanglePosition_YOffset(sy)));
-
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- (PM3Render2D_Width(width << 1)) |
- (PM3Render2D_Height(height)));
-
- PM3_WRITE_REG(PM3FBWriteBufferWidth0,
- PM3FBWriteBufferWidth_Width(l_fb_info->
- current_par->
- width));
-
- PM3_WRITE_REG(PM3PixelSize, PM3PixelSize_GLOBAL_32BIT);
- }
-
- pm3fb_wait_pm3(l_fb_info);
-}
-
-static void pm3fb_cfb32_clear_margins(struct vc_data *conp,
- struct display *p, int bottom_only)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- int sx, sy;
- u32 c;
-
- DTRACE;
-
- sx = conp->vc_cols * fontwidth(p); /* right margin */
- sy = conp->vc_rows * fontheight(p); /* bottom margin */
- c = ((u32 *) p->dispsw_data)[attr_bgcol_ec(p, conp)];
-
- if (!bottom_only) { /* right margin top->bottom */
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3ForegroundColor, c);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset
- (p->var.xoffset +
- sx)) | (PM3RectanglePosition_YOffset(p->
- var.
- yoffset)));
-
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(p->var.xres - sx)) |
- (PM3Render2D_Height(p->var.yres)));
- }
-
- /* bottom margin left -> right */
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3ForegroundColor, c);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(p->var.xoffset)) |
- (PM3RectanglePosition_YOffset(p->var.yoffset + sy)));
-
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(p->var.xres)) |
- (PM3Render2D_Height(p->var.yres - sy)));
-
- pm3fb_wait_pm3(l_fb_info);
-}
-#endif /* FBCON_HAS_CFB32 */
-#ifdef FBCON_HAS_CFB16
-static void pm3fb_cfb16_clear(struct vc_data *conp,
- struct display *p,
- int sy, int sx, int height, int width)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- u32 c;
-
- DTRACE;
-
- sx = sx * fontwidth(p);
- width = width * fontwidth(p);
- sy = sy * fontheight(p);
- height = height * fontheight(p);
- c = ((u16 *) p->dispsw_data)[attr_bgcol_ec(p, conp)];
- c = c | (c << 16);
-
- PM3_WAIT(4);
-
- if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
- PM3_WRITE_REG(PM3ForegroundColor, c);
- else
- PM3_WRITE_REG(PM3FBBlockColor, c);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(sx)) |
- (PM3RectanglePosition_YOffset(sy)));
-
- if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(width)) |
- (PM3Render2D_Height(height)));
- else
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- (PM3Render2D_Width(width)) |
- (PM3Render2D_Height(height)));
-
- pm3fb_wait_pm3(l_fb_info);
-}
-
-static void pm3fb_cfb16_clear_margins(struct vc_data *conp,
- struct display *p, int bottom_only)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- int sx, sy;
- u32 c;
-
- DTRACE;
-
- sx = conp->vc_cols * fontwidth(p); /* right margin */
- sy = conp->vc_rows * fontheight(p); /* bottom margin */
- c = ((u16 *) p->dispsw_data)[attr_bgcol_ec(p, conp)];
- c = c | (c << 16);
-
- if (!bottom_only) { /* right margin top->bottom */
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
- PM3_WRITE_REG(PM3ForegroundColor, c);
- else
- PM3_WRITE_REG(PM3FBBlockColor, c);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset
- (p->var.xoffset +
- sx)) | (PM3RectanglePosition_YOffset(p->
- var.
- yoffset)));
- if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(p->var.xres - sx)) |
- (PM3Render2D_Height(p->var.yres)));
- else
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- (PM3Render2D_Width(p->var.xres - sx)) |
- (PM3Render2D_Height(p->var.yres)));
- }
-
- /* bottom margin left -> right */
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
- PM3_WRITE_REG(PM3ForegroundColor, c);
- else
- PM3_WRITE_REG(PM3FBBlockColor, c);
-
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(p->var.xoffset)) |
- (PM3RectanglePosition_YOffset(p->var.yoffset + sy)));
-
- if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(p->var.xres)) |
- (PM3Render2D_Height(p->var.yres - sy)));
- else
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- (PM3Render2D_Width(p->var.xres)) |
- (PM3Render2D_Height(p->var.yres - sy)));
-
- pm3fb_wait_pm3(l_fb_info);
-}
-#endif /* FBCON_HAS_CFB16 */
-#ifdef FBCON_HAS_CFB8
-static void pm3fb_cfb8_clear(struct vc_data *conp,
- struct display *p,
- int sy, int sx, int height, int width)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- u32 c;
-
- DTRACE;
-
- sx = sx * fontwidth(p);
- width = width * fontwidth(p);
- sy = sy * fontheight(p);
- height = height * fontheight(p);
-
- c = attr_bgcol_ec(p, conp);
- c |= c << 8;
- c |= c << 16;
-
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3ForegroundColor, c);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(sx)) |
- (PM3RectanglePosition_YOffset(sy)));
-
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(width)) |
- (PM3Render2D_Height(height)));
-
- pm3fb_wait_pm3(l_fb_info);
-}
+ /*
+ * Oxygen VX1 - it appears that setting PM3VideoControl and
+ * then PM3RD_SyncControl to the same SYNC settings undoes
+ * any net change - they seem to xor together. Only set the
+ * sync options in PM3RD_SyncControl. --rmk
+ */
+ video &= ~(PM3VideoControl_HSYNC_MASK |
+ PM3VideoControl_VSYNC_MASK);
+ video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
+ PM3VideoControl_VSYNC_ACTIVE_HIGH;
-static void pm3fb_cfb8_clear_margins(struct vc_data *conp,
- struct display *p, int bottom_only)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- int sx, sy;
- u32 c;
-
- DTRACE;
-
- sx = conp->vc_cols * fontwidth(p); /* right margin */
- sy = conp->vc_rows * fontheight(p); /* bottom margin */
- c = attr_bgcol_ec(p, conp);
- c |= c << 8;
- c |= c << 16;
-
- if (!bottom_only) { /* right margin top->bottom */
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3ForegroundColor, c);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset
- (p->var.xoffset +
- sx)) | (PM3RectanglePosition_YOffset(p->
- var.
- yoffset)));
-
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(p->var.xres - sx)) |
- (PM3Render2D_Height(p->var.yres)));
+ switch (blank_mode) {
+ case FB_BLANK_UNBLANK:
+ video = video | PM3VideoControl_ENABLE;
+ break;
+ case FB_BLANK_NORMAL: /* FIXME */
+ video = video & ~(PM3VideoControl_ENABLE);
+ break;
+ case FB_BLANK_HSYNC_SUSPEND:
+ video = video & ~(PM3VideoControl_HSYNC_MASK |
+ PM3VideoControl_BLANK_ACTIVE_LOW);
+ break;
+ case FB_BLANK_VSYNC_SUSPEND:
+ video = video & ~(PM3VideoControl_VSYNC_MASK |
+ PM3VideoControl_BLANK_ACTIVE_LOW);
+ break;
+ case FB_BLANK_POWERDOWN:
+ video = video & ~(PM3VideoControl_HSYNC_MASK |
+ PM3VideoControl_VSYNC_MASK |
+ PM3VideoControl_BLANK_ACTIVE_LOW);
+ break;
+ default:
+ DPRINTK("Unsupported blanking %d\n", blank_mode);
+ return 1;
}
- /* bottom margin left -> right */
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3ForegroundColor, c);
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(p->var.xoffset)) |
- (PM3RectanglePosition_YOffset(p->var.yoffset + sy)));
+ PM3_SLOW_WRITE_REG(par,PM3VideoControl, video);
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(p->var.xres)) |
- (PM3Render2D_Height(p->var.yres - sy)));
-
- pm3fb_wait_pm3(l_fb_info);
-}
-#endif /* FBCON_HAS_CFB8 */
-#if defined(FBCON_HAS_CFB8) || defined(FBCON_HAS_CFB16) || defined(FBCON_HAS_CFB32)
-static void pm3fb_cfbX_bmove(struct display *p,
- int sy, int sx,
- int dy, int dx, int height, int width)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- int x_align, o_x, o_y;
-
- DTRACE;
-
- sx = sx * fontwidth(p);
- dx = dx * fontwidth(p);
- width = width * fontwidth(p);
- sy = sy * fontheight(p);
- dy = dy * fontheight(p);
- height = height * fontheight(p);
-
- o_x = sx - dx; /*(sx > dx ) ? (sx - dx) : (dx - sx); */
- o_y = sy - dy; /*(sy > dy ) ? (sy - dy) : (dy - sy); */
-
- x_align = (sx & 0x1f);
-
- PM3_WAIT(6);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UserScissorEnable |
- PM3Config2D_ForegroundROPEnable |
- PM3Config2D_Blocking |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable);
-
- PM3_WRITE_REG(PM3ScissorMinXY,
- ((dy & 0x0fff) << 16) | (dx & 0x0fff));
- PM3_WRITE_REG(PM3ScissorMaxXY,
- (((dy + height) & 0x0fff) << 16) |
- ((dx + width) & 0x0fff));
-
- PM3_WRITE_REG(PM3FBSourceReadBufferOffset,
- PM3FBSourceReadBufferOffset_XOffset(o_x) |
- PM3FBSourceReadBufferOffset_YOffset(o_y));
-
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(dx - x_align)) |
- (PM3RectanglePosition_YOffset(dy)));
-
- PM3_WRITE_REG(PM3Render2D,
- ((sx > dx) ? PM3Render2D_XPositive : 0) |
- ((sy > dy) ? PM3Render2D_YPositive : 0) |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- PM3Render2D_FBSourceReadEnable |
- (PM3Render2D_Width(width + x_align)) |
- (PM3Render2D_Height(height)));
-
- pm3fb_wait_pm3(l_fb_info);
+ return 0;
}
-static void pm3fb_cfbX_putc(struct vc_data *conp, struct display *p,
- int c, int yy, int xx)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- u8 *cdat, asx = 0, asy = 0, o_x = 0, o_y = 0;
- u32 fgx, bgx, ldat;
- int sx, sy, i;
-
- DTRACE;
-
- if (l_fb_info->current_par->depth == 8)
- fgx = attr_fgcol(p, c);
- else if (depth2bpp(l_fb_info->current_par->depth) == 16)
- fgx = ((u16 *) p->dispsw_data)[attr_fgcol(p, c)];
- else
- fgx = ((u32 *) p->dispsw_data)[attr_fgcol(p, c)];
-
- PM3_COLOR(fgx);
-
- if (l_fb_info->current_par->depth == 8)
- bgx = attr_bgcol(p, c);
- else if (depth2bpp(l_fb_info->current_par->depth) == 16)
- bgx = ((u16 *) p->dispsw_data)[attr_bgcol(p, c)];
- else
- bgx = ((u32 *) p->dispsw_data)[attr_bgcol(p, c)];
-
- PM3_COLOR(bgx);
-
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable | PM3Config2D_OpaqueSpan);
-
- PM3_WRITE_REG(PM3ForegroundColor, fgx);
- PM3_WRITE_REG(PM3FillBackgroundColor, bgx);
-
- /* WARNING : address select X need to specify 8 bits for fontwidth <= 8 */
- /* and 16 bits for fontwidth <= 16 */
- /* same in _putcs, same for Y and fontheight */
- if (fontwidth(p) <= 8)
- asx = 2;
- else if (fontwidth(p) <= 16)
- asx = 3; /* look OK */
- if (fontheight(p) <= 8)
- asy = 2;
- else if (fontheight(p) <= 16)
- asy = 3; /* look OK */
- else if (fontheight(p) <= 32)
- asy = 4; /* look OK */
-
- sx = xx * fontwidth(p);
- sy = yy * fontheight(p);
-
- if (fontwidth(p) <= 8)
- o_x = (8 - (sx & 0x7)) & 0x7;
- else if (fontwidth(p) <= 16)
- o_x = (16 - (sx & 0xF)) & 0xF;
- if (fontheight(p) <= 8)
- o_y = (8 - (sy & 0x7)) & 0x7;
- else if (fontheight(p) <= 16)
- o_y = (16 - (sy & 0xF)) & 0xF;
- else if (fontheight(p) <= 32)
- o_y = (32 - (sy & 0x1F)) & 0x1F;
-
- PM3_WRITE_REG(PM3AreaStippleMode, (o_x << 7) | (o_y << 12) | /* x_offset, y_offset in pattern */
- (1 << 18) | /* BE */
- 1 | (asx << 1) | (asy << 4) | /* address select x/y */
- (1 << 20)); /* OpaqueSpan */
-
- if (fontwidth(p) <= 8) {
- cdat = p->fontdata + (c & p->charmask) * fontheight(p);
- } else {
- cdat =
- p->fontdata +
- ((c & p->charmask) * (fontheight(p) << 1));
- }
-
- PM3_WAIT(2 + fontheight(p));
-
- for (i = 0; i < fontheight(p); i++) { /* assume fontheight <= 32 */
- if (fontwidth(p) <= 8) {
- ldat = *cdat++;
- } else { /* assume fontwidth <= 16 ATM */
-
- ldat = ((*cdat++) << 8);
- ldat |= *cdat++;
- }
- PM3_WRITE_REG(AreaStipplePattern_indexed(i), ldat);
- }
+ /*
+ * Frame buffer operations
+ */
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(sx)) |
- (PM3RectanglePosition_YOffset(sy)));
+static struct fb_ops pm3fb_ops = {
+ .owner = THIS_MODULE,
+ .fb_check_var = pm3fb_check_var,
+ .fb_set_par = pm3fb_set_par,
+ .fb_setcolreg = pm3fb_setcolreg,
+ .fb_pan_display = pm3fb_pan_display,
+ .fb_fillrect = cfb_fillrect, /* Needed !!! */
+ .fb_copyarea = cfb_copyarea, /* Needed !!! */
+ .fb_imageblit = cfb_imageblit, /* Needed !!! */
+ .fb_blank = pm3fb_blank,
+};
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_AreaStippleEnable |
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(fontwidth(p))) |
- (PM3Render2D_Height(fontheight(p))));
+/* ------------------------------------------------------------------------- */
- pm3fb_wait_pm3(l_fb_info);
-}
+ /*
+ * Initialization
+ */
-static void pm3fb_cfbX_putcs(struct vc_data *conp, struct display *p,
- const unsigned short *s, int count, int yy,
- int xx)
+/* mmio register are already mapped when this function is called */
+/* the pm3fb_fix.smem_start is also set */
+static unsigned long pm3fb_size_memory(struct pm3_par *par)
{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
- u8 *cdat, asx = 0, asy = 0, o_x = 0, o_y = 0;
- u32 fgx, bgx, ldat;
- int sx, sy, i, j;
- u16 sc;
-
- DTRACE;
-
- sc = scr_readw(s);
- if (l_fb_info->current_par->depth == 8)
- fgx = attr_fgcol(p, sc);
- else if (depth2bpp(l_fb_info->current_par->depth) == 16)
- fgx = ((u16 *) p->dispsw_data)[attr_fgcol(p, sc)];
- else
- fgx = ((u32 *) p->dispsw_data)[attr_fgcol(p, sc)];
-
- PM3_COLOR(fgx);
-
- if (l_fb_info->current_par->depth == 8)
- bgx = attr_bgcol(p, sc);
- else if (depth2bpp(l_fb_info->current_par->depth) == 16)
- bgx = ((u16 *) p->dispsw_data)[attr_bgcol(p, sc)];
- else
- bgx = ((u32 *) p->dispsw_data)[attr_bgcol(p, sc)];
-
- PM3_COLOR(bgx);
-
- PM3_WAIT(4);
-
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0x3)) | /* Ox3 is GXcopy */
- PM3Config2D_FBWriteEnable |
- PM3Config2D_OpaqueSpan);
-
- PM3_WRITE_REG(PM3ForegroundColor, fgx);
- PM3_WRITE_REG(PM3FillBackgroundColor, bgx);
-
- /* WARNING : address select X need to specify 8 bits for fontwidth <= 8 */
- /* and 16 bits for fontwidth <= 16 */
- /* same in _putc, same for Y and fontheight */
- if (fontwidth(p) <= 8)
- asx = 2;
- else if (fontwidth(p) <= 16)
- asx = 3; /* look OK */
- if (fontheight(p) <= 8)
- asy = 2;
- else if (fontheight(p) <= 16)
- asy = 3; /* look OK */
- else if (fontheight(p) <= 32)
- asy = 4; /* look OK */
-
- sy = yy * fontheight(p);
-
- if (fontheight(p) <= 8)
- o_y = (8 - (sy & 0x7)) & 0x7;
- else if (fontheight(p) <= 16)
- o_y = (16 - (sy & 0xF)) & 0xF;
- else if (fontheight(p) <= 32)
- o_y = (32 - (sy & 0x1F)) & 0x1F;
-
- for (j = 0; j < count; j++) {
- sc = scr_readw(s + j);
- if (fontwidth(p) <= 8)
- cdat = p->fontdata +
- (sc & p->charmask) * fontheight(p);
- else
- cdat = p->fontdata +
- ((sc & p->charmask) * fontheight(p) << 1);
-
- sx = (xx + j) * fontwidth(p);
-
- if (fontwidth(p) <= 8)
- o_x = (8 - (sx & 0x7)) & 0x7;
- else if (fontwidth(p) <= 16)
- o_x = (16 - (sx & 0xF)) & 0xF;
-
- PM3_WAIT(3 + fontheight(p));
-
- PM3_WRITE_REG(PM3AreaStippleMode, (o_x << 7) | (o_y << 12) | /* x_offset, y_offset in pattern */
- (1 << 18) | /* BE */
- 1 | (asx << 1) | (asy << 4) | /* address select x/y */
- (1 << 20)); /* OpaqueSpan */
-
- for (i = 0; i < fontheight(p); i++) { /* assume fontheight <= 32 */
- if (fontwidth(p) <= 8) {
- ldat = *cdat++;
- } else { /* assume fontwidth <= 16 ATM */
- ldat = ((*cdat++) << 8);
- ldat |= *cdat++;
- }
- PM3_WRITE_REG(AreaStipplePattern_indexed(i), ldat);
- }
+ unsigned long memsize = 0, tempBypass, i, temp1, temp2;
+ unsigned char __iomem *screen_mem;
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(sx)) |
- (PM3RectanglePosition_YOffset(sy)));
-
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_AreaStippleEnable |
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(fontwidth(p))) |
- (PM3Render2D_Height(fontheight(p))));
+ pm3fb_fix.smem_len = 64 * 1024 * 1024; /* request full aperture size */
+ /* Linear frame buffer - request region and map it. */
+ if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len,
+ "pm3fb smem")) {
+ printk(KERN_WARNING "pm3fb: Can't reserve smem.\n");
+ return 0;
}
- pm3fb_wait_pm3(l_fb_info);
-}
-
-static void pm3fb_cfbX_revc(struct display *p, int xx, int yy)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) p->fb_info;
-
- xx = xx * fontwidth(p);
- yy = yy * fontheight(p);
-
- if (l_fb_info->current_par->depth == 8)
- {
- if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
- PM3_SLOW_WRITE_REG(PM3FBSoftwareWriteMask, 0x0F0F0F0F);
- else
- PM3_SLOW_WRITE_REG(PM3FBHardwareWriteMask, 0x0F0F0F0F);
+ screen_mem =
+ ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
+ if (!screen_mem) {
+ printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n");
+ release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
+ return 0;
}
- PM3_WAIT(3);
+ /* TODO: card-specific stuff, *before* accessing *any* FB memory */
+ /* For Appian Jeronimo 2000 board second head */
- PM3_WRITE_REG(PM3Config2D,
- PM3Config2D_UseConstantSource |
- PM3Config2D_ForegroundROPEnable |
- (PM3Config2D_ForegroundROP(0xa)) | /* Oxa is GXinvert */
- PM3Config2D_FBDestReadEnable |
- PM3Config2D_FBWriteEnable);
+ tempBypass = PM3_READ_REG(par, PM3MemBypassWriteMask);
- PM3_WRITE_REG(PM3RectanglePosition,
- (PM3RectanglePosition_XOffset(xx)) |
- (PM3RectanglePosition_YOffset(yy)));
+ DPRINTK("PM3MemBypassWriteMask was: 0x%08lx\n", tempBypass);
- PM3_WRITE_REG(PM3Render2D,
- PM3Render2D_XPositive |
- PM3Render2D_YPositive |
- PM3Render2D_Operation_Normal |
- PM3Render2D_SpanOperation |
- (PM3Render2D_Width(fontwidth(p))) |
- (PM3Render2D_Height(fontheight(p))));
+ PM3_SLOW_WRITE_REG(par, PM3MemBypassWriteMask, 0xFFFFFFFF);
- pm3fb_wait_pm3(l_fb_info);
+ /* pm3 split up memory, replicates, and do a lot of nasty stuff IMHO ;-) */
+ for (i = 0; i < 32; i++) {
+ fb_writel(i * 0x00345678,
+ (screen_mem + (i * 1048576)));
+ mb();
+ temp1 = fb_readl((screen_mem + (i * 1048576)));
- if (l_fb_info->current_par->depth == 8)
- {
- if (l_fb_info->memt.caps & PM3LocalMemCaps_NoWriteMask)
- PM3_SLOW_WRITE_REG(PM3FBSoftwareWriteMask, 0xFFFFFFFF);
+ /* Let's check for wrapover, write will fail at 16MB boundary */
+ if (temp1 == (i * 0x00345678))
+ memsize = i;
else
- PM3_SLOW_WRITE_REG(PM3FBHardwareWriteMask, 0xFFFFFFFF);
+ break;
}
-}
-#endif /* FBCON_HAS_CFB8 || FBCON_HAS_CFB16 || FBCON_HAS_CFB32 */
-#endif /* PM3FB_USE_ACCEL */
-/* *********************************** */
-/* ***** pre-init board(s) setup ***** */
-/* *********************************** */
+ DPRINTK("First detect pass already got %ld MB\n", memsize + 1);
-static void pm3fb_mode_setup(char *mode, unsigned long board_num)
-{
- struct pm3fb_info *l_fb_info = &(fb_info[board_num]);
- struct pm3fb_par *l_fb_par = &(current_par[board_num]);
- unsigned long i = 0;
-
- current_par_valid[board_num] = 0;
-
- if (!strncmp(mode, "current", 7)) {
- l_fb_info->use_current = 1; /* default w/ OpenFirmware */
- } else {
- while ((mode_base[i].name[0])
- && (!current_par_valid[board_num])) {
- if (!
- (strncmp
- (mode, mode_base[i].name,
- strlen(mode_base[i].name)))) {
- memcpy(l_fb_par, &(mode_base[i].user_mode),
- sizeof(struct pm3fb_par));
- current_par_valid[board_num] = 1;
- DPRINTK(2, "Mode set to %s\n",
- mode_base[i].name);
- }
- i++;
+ if (memsize + 1 == i) {
+ for (i = 0; i < 32; i++) {
+ /* Clear first 32MB ; 0 is 0, no need to byteswap */
+ writel(0x0000000,
+ (screen_mem + (i * 1048576)));
+ mb();
}
- DASSERT(current_par_valid[board_num],
- "Valid mode on command line\n");
- }
-}
-static void pm3fb_pciid_setup(char *pciid, unsigned long board_num)
-{
- short l_bus = -1, l_slot = -1, l_func = -1;
- char *next;
-
- if (pciid) {
- l_bus = simple_strtoul(pciid, &next, 10);
- if (next && (next[0] == ':')) {
- pciid = next + 1;
- l_slot = simple_strtoul(pciid, &next, 10);
- if (next && (next[0] == ':')) {
- pciid = next + 1;
- l_func =
- simple_strtoul(pciid, (char **) NULL,
- 10);
- }
+ for (i = 32; i < 64; i++) {
+ fb_writel(i * 0x00345678,
+ (screen_mem + (i * 1048576)));
+ mb();
+ temp1 =
+ fb_readl((screen_mem + (i * 1048576)));
+ temp2 =
+ fb_readl((screen_mem + ((i - 32) * 1048576)));
+ /* different value, different RAM... */
+ if ((temp1 == (i * 0x00345678)) && (temp2 == 0))
+ memsize = i;
+ else
+ break;
}
- } else
- return;
-
- if ((l_bus >= 0) && (l_slot >= 0) && (l_func >= 0)) {
- bus[board_num] = l_bus;
- slot[board_num] = l_slot;
- func[board_num] = l_func;
- DPRINTK(2, "Board #%ld will be PciId: %hd:%hd:%hd\n",
- board_num, l_bus, l_slot, l_func);
- } else {
- DPRINTK(1, "Invalid PciId: %hd:%hd:%hd for board #%ld\n",
- l_bus, l_slot, l_func, board_num);
}
-}
-
-static void pm3fb_font_setup(char *lf, unsigned long board_num)
-{
- unsigned long lfs = strlen(lf);
-
- if (lfs > (PM3_FONTNAME_SIZE - 1)) {
- DPRINTK(1, "Fontname %s too long\n", lf);
- return;
- }
- strlcpy(fontn[board_num], lf, lfs + 1);
-}
+ DPRINTK("Second detect pass got %ld MB\n", memsize + 1);
-static void pm3fb_bootdepth_setup(char *bds, unsigned long board_num)
-{
- unsigned long bd = simple_strtoul(bds, (char **) NULL, 10);
+ PM3_SLOW_WRITE_REG(par, PM3MemBypassWriteMask, tempBypass);
- if (!(depth_supported(bd))) {
- printk(KERN_WARNING "pm3fb: ignoring invalid depth %s for board #%ld\n",
- bds, board_num);
- return;
- }
- depth[board_num] = bd;
-}
+ iounmap(screen_mem);
+ release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
+ memsize = 1048576 * (memsize + 1);
-static void pm3fb_forcesize_setup(char *bds, unsigned long board_num)
-{
- unsigned long bd = simple_strtoul(bds, (char **) NULL, 10);
+ DPRINTK("Returning 0x%08lx bytes\n", memsize);
- if (bd > 64) {
- printk(KERN_WARNING "pm3fb: ignoring invalid memory size %s for board #%ld\n",
- bds, board_num);
- return;
- }
- forcesize[board_num] = bd;
+ return memsize;
}
-static char *pm3fb_boardnum_setup(char *options, unsigned long *bn)
+static int __devinit pm3fb_probe(struct pci_dev *dev,
+ const struct pci_device_id *ent)
{
- char *next;
+ struct fb_info *info;
+ struct pm3_par *par;
+ struct device* device = &dev->dev; /* for pci drivers */
+ int err, retval = -ENXIO;
- if (!(isdigit(options[0]))) {
- (*bn) = 0;
- return (options);
+ err = pci_enable_device(dev);
+ if (err) {
+ printk(KERN_WARNING "pm3fb: Can't enable PCI dev: %d\n", err);
+ return err;
}
+ /*
+ * Dynamically allocate info and par
+ */
+ info = framebuffer_alloc(sizeof(struct pm3_par), device);
- (*bn) = simple_strtoul(options, &next, 10);
-
- if (next && (next[0] == ':') && ((*bn) >= 0)
- && ((*bn) <= PM3_MAX_BOARD)) {
- DPRINTK(2, "Board_num seen as %ld\n", (*bn));
- return (next + 1);
- } else {
- (*bn) = 0;
- DPRINTK(2, "Board_num default to %ld\n", (*bn));
- return (options);
- }
-}
+ if (!info)
+ return -ENOMEM;
+ par = info->par;
-static void pm3fb_real_setup(char *options)
-{
- char *next;
- unsigned long i, bn;
- struct pm3fb_info *l_fb_info;
-
- DTRACE;
-
- DPRINTK(2, "Options : %s\n", options);
-
- for (i = 0; i < PM3_MAX_BOARD; i++) {
- l_fb_info = &(fb_info[i]);
- memset(l_fb_info, 0, sizeof(struct pm3fb_info));
- l_fb_info->gen.fbhw = &pm3fb_switch;
- l_fb_info->board_num = i;
- current_par_valid[i] = 0;
- slot[i] = -1;
- func[i] = -1;
- bus[i] = -1;
- disable[i] = 0;
- noaccel[i] = 0;
- fontn[i][0] = '\0';
- depth[i] = 0;
- l_fb_info->current_par = &(current_par[i]);
+ /*
+ * Here we set the screen_base to the virtual memory address
+ * for the framebuffer.
+ */
+ pm3fb_fix.mmio_start = pci_resource_start(dev, 0);
+ pm3fb_fix.mmio_len = PM3_REGS_SIZE;
+
+ /* Registers - request region and map it. */
+ if (!request_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len,
+ "pm3fb regbase")) {
+ printk(KERN_WARNING "pm3fb: Can't reserve regbase.\n");
+ goto err_exit_neither;
+ }
+ par->v_regs =
+ ioremap_nocache(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
+ if (!par->v_regs) {
+ printk(KERN_WARNING "pm3fb: Can't remap %s register area.\n",
+ pm3fb_fix.id);
+ release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
+ goto err_exit_neither;
+ }
+
+#if defined(__BIG_ENDIAN)
+ pm3fb_fix.mmio_start += PM3_REGS_SIZE;
+ DPRINTK("Adjusting register base for big-endian.\n");
+#endif
+ /* Linear frame buffer - request region and map it. */
+ pm3fb_fix.smem_start = pci_resource_start(dev, 1);
+ pm3fb_fix.smem_len = pm3fb_size_memory(par);
+ if (!pm3fb_fix.smem_len)
+ {
+ printk(KERN_WARNING "pm3fb: Can't find memory on board.\n");
+ goto err_exit_mmio;
}
-
- /* eat up prefix pm3fb and whatever is used as separator i.e. :,= */
- if (!strncmp(options, "pm3fb", 5)) {
- options += 5;
- while (((*options) == ',') || ((*options) == ':')
- || ((*options) == '='))
- options++;
+ if (!request_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len,
+ "pm3fb smem")) {
+ printk(KERN_WARNING "pm3fb: Can't reserve smem.\n");
+ goto err_exit_mmio;
}
-
- while (options) {
- bn = 0;
- if ((next = strchr(options, ','))) {
- (*next) = '\0';
- next++;
- }
-
- if (!strncmp(options, "mode:", 5)) {
- options = pm3fb_boardnum_setup(options + 5, &bn);
- DPRINTK(2, "Setting mode for board #%ld\n", bn);
- pm3fb_mode_setup(options, bn);
- } else if (!strncmp(options, "off:", 4)) {
- options = pm3fb_boardnum_setup(options + 4, &bn);
- DPRINTK(2, "Disabling board #%ld\n", bn);
- disable[bn] = 1;
- } else if (!strncmp(options, "off", 3)) { /* disable everything */
- for (i = 0; i < PM3_MAX_BOARD; i++)
- disable[i] = 1;
- } else if (!strncmp(options, "disable:", 8)) {
- options = pm3fb_boardnum_setup(options + 8, &bn);
- DPRINTK(2, "Disabling board #%ld\n", bn);
- disable[bn] = 1;
- } else if (!strncmp(options, "pciid:", 6)) {
- options = pm3fb_boardnum_setup(options + 6, &bn);
- DPRINTK(2, "Setting PciID for board #%ld\n", bn);
- pm3fb_pciid_setup(options, bn);
- } else if (!strncmp(options, "noaccel:", 8)) {
- options = pm3fb_boardnum_setup(options + 8, &bn);
- noaccel[bn] = 1;
- } else if (!strncmp(options, "font:", 5)) {
- options = pm3fb_boardnum_setup(options + 5, &bn);
- pm3fb_font_setup(options, bn);
- } else if (!strncmp(options, "depth:", 6)) {
- options = pm3fb_boardnum_setup(options + 6, &bn);
- pm3fb_bootdepth_setup(options, bn);
- } else if (!strncmp(options, "printtimings", 12)) {
- printtimings = 1;
- } else if (!strncmp(options, "flatpanel:", 10)) {
- options = pm3fb_boardnum_setup(options + 10, &bn);
- flatpanel[bn] = 1;
- } else if (!strncmp(options, "forcesize:", 10)) {
- options = pm3fb_boardnum_setup(options + 10, &bn);
- pm3fb_forcesize_setup(options, bn);
- }
- options = next;
+ info->screen_base =
+ ioremap_nocache(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
+ if (!info->screen_base) {
+ printk(KERN_WARNING "pm3fb: Can't ioremap smem area.\n");
+ release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
+ goto err_exit_mmio;
}
-}
+ info->screen_size = pm3fb_fix.smem_len;
-/* ********************************************** */
-/* ***** framebuffer API standard functions ***** */
-/* ********************************************** */
+ info->fbops = &pm3fb_ops;
-static int pm3fb_encode_fix(struct fb_fix_screeninfo *fix,
- const void *par, struct fb_info_gen *info)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
- struct pm3fb_par *p = (struct pm3fb_par *) par;
-
- DTRACE;
-
- strcpy(fix->id, permedia3_name);
- fix->smem_start = (unsigned long)l_fb_info->p_fb;
- fix->smem_len = l_fb_info->fb_size;
- fix->mmio_start = (unsigned long)l_fb_info->pIOBase;
- fix->mmio_len = PM3_REGS_SIZE;
-#ifdef PM3FB_USE_ACCEL
- if (!(noaccel[l_fb_info->board_num]))
- fix->accel = FB_ACCEL_3DLABS_PERMEDIA3;
- else
-#endif /* PM3FB_USE_ACCEL */
- fix->accel = FB_ACCEL_NONE;
- fix->type = FB_TYPE_PACKED_PIXELS;
- fix->visual =
- (p->depth == 8) ? FB_VISUAL_PSEUDOCOLOR : FB_VISUAL_TRUECOLOR;
- if (current_par_valid[l_fb_info->board_num])
- fix->line_length =
- l_fb_info->current_par->width *
- depth2ByPP(l_fb_info->current_par->depth);
- else
- fix->line_length = 0;
- fix->xpanstep = 64 / depth2bpp(p->depth);
- fix->ypanstep = 1;
- fix->ywrapstep = 0;
- return (0);
-}
-
-static int pm3fb_decode_var(const struct fb_var_screeninfo *var,
- void *par, struct fb_info_gen *info)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
- struct pm3fb_par *p = (struct pm3fb_par *) par;
- struct pm3fb_par temp_p;
- u32 xres;
-
- DTRACE;
-
- DASSERT((var != NULL), "fb_var_screeninfo* not NULL");
- DASSERT((p != NULL), "pm3fb_par* not NULL");
- DASSERT((l_fb_info != NULL), "pm3fb_info* not NULL");
-
- memset(&temp_p, 0, sizeof(struct pm3fb_par));
- temp_p.width = (var->xres_virtual + 7) & ~7;
- temp_p.height = var->yres_virtual;
-
- if (!(depth_supported(var->bits_per_pixel))) /* round unsupported up to a multiple of 8 */
- temp_p.depth = depth2bpp(var->bits_per_pixel);
- else
- temp_p.depth = var->bits_per_pixel;
+ par->video = PM3_READ_REG(par, PM3VideoControl);
- temp_p.depth = (temp_p.depth > 32) ? 32 : temp_p.depth; /* max 32 */
- temp_p.depth = (temp_p.depth == 24) ? 32 : temp_p.depth; /* 24 unsupported, round-up to 32 */
+ info->fix = pm3fb_fix;
+ info->pseudo_palette = par->palette;
+ info->flags = FBINFO_DEFAULT;/* | FBINFO_HWACCEL_YPAN;*/
- if ((temp_p.depth == 16) && (var->red.length == 5) && (var->green.length == 5) && (var->blue.length == 5))
- temp_p.depth = 15; /* RGBA 5551 is stored as depth 15 */
-
- if ((temp_p.depth == 16) && (var->red.length == 4) && (var->green.length == 4) && (var->blue.length == 4))
- temp_p.depth = 12; /* RGBA 4444 is stored as depth 12 */
-
-
- DPRINTK(2,
- "xres: %d, yres: %d, vxres: %d, vyres: %d ; xoffset:%d, yoffset: %d\n",
- var->xres, var->yres, var->xres_virtual, var->yres_virtual,
- var->xoffset, var->yoffset);
+ /*
+ * This should give a reasonable default video mode. The following is
+ * done when we can set a video mode.
+ */
+ if (!mode_option)
+ mode_option = "640x480@60";
- xres = (var->xres + 31) & ~31;
- if (temp_p.width < xres + var->xoffset)
- temp_p.width = xres + var->xoffset;
- if (temp_p.height < var->yres + var->yoffset)
- temp_p.height = var->yres + var->yoffset;
+ retval = fb_find_mode(&info->var, info, mode_option, NULL, 0, NULL, 8);
- if (temp_p.width > 2048) {
- DPRINTK(1, "virtual width not supported: %u\n",
- temp_p.width);
- return (-EINVAL);
- }
- if (var->yres < 200) {
- DPRINTK(1, "height not supported: %u\n", (u32) var->yres);
- return (-EINVAL);
- }
- if (temp_p.height < 200 || temp_p.height > 4095) {
- DPRINTK(1, "virtual height not supported: %u\n",
- temp_p.height);
- return (-EINVAL);
+ if (!retval || retval == 4) {
+ retval = -EINVAL;
+ goto err_exit_both;
}
- if (!(depth_supported(temp_p.depth))) {
- DPRINTK(1, "depth not supported: %u\n", temp_p.depth);
- return (-EINVAL);
- }
- if ((temp_p.width * temp_p.height * depth2ByPP(temp_p.depth)) >
- l_fb_info->fb_size) {
- DPRINTK(1, "no memory for screen (%ux%ux%u)\n",
- temp_p.width, temp_p.height, temp_p.depth);
- return (-EINVAL);
- }
-
- if ((!var->pixclock) ||
- (!var->right_margin) ||
- (!var->hsync_len) ||
- (!var->left_margin) ||
- (!var->lower_margin) ||
- (!var->vsync_len) || (!var->upper_margin)
- ) {
- unsigned long i = 0, done = 0;
- printk(KERN_WARNING "pm3fb: refusing to use a likely wrong timing\n");
-
- while ((mode_base[i].user_mode.width) && !done) {
- if ((mode_base[i].user_mode.width == temp_p.width)
- && (mode_base[i].user_mode.height ==
- temp_p.height)) {
- printk(KERN_NOTICE "pm3fb: using close match %s\n",
- mode_base[i].name);
- temp_p = mode_base[i].user_mode;
- done = 1;
- }
- i++;
- }
- if (!done)
- return (-EINVAL);
- } else {
- temp_p.pixclock = PICOS2KHZ(var->pixclock);
- if (temp_p.pixclock > PM3_MAX_PIXCLOCK) {
- DPRINTK(1, "pixclock too high (%uKHz)\n",
- temp_p.pixclock);
- return (-EINVAL);
- }
-
- temp_p.hsstart = var->right_margin;
- temp_p.hsend = var->right_margin + var->hsync_len;
- temp_p.hbend =
- var->right_margin + var->hsync_len + var->left_margin;
- temp_p.htotal = xres + temp_p.hbend;
-
- temp_p.vsstart = var->lower_margin;
- temp_p.vsend = var->lower_margin + var->vsync_len;
- temp_p.vbend =
- var->lower_margin + var->vsync_len + var->upper_margin;
- temp_p.vtotal = var->yres + temp_p.vbend;
-
- temp_p.stride = temp_p.width;
-
- DPRINTK(2, "Using %d * %d, %d Khz, stride is %08x\n",
- temp_p.width, temp_p.height, temp_p.pixclock,
- temp_p.stride);
-
- temp_p.base =
- pm3fb_Shiftbpp(l_fb_info, temp_p.depth,
- (var->yoffset * xres) + var->xoffset);
-
- temp_p.video = 0;
-
- if (var->sync & FB_SYNC_HOR_HIGH_ACT)
- temp_p.video |= PM3VideoControl_HSYNC_ACTIVE_HIGH;
- else
- temp_p.video |= PM3VideoControl_HSYNC_ACTIVE_LOW;
-
- if (var->sync & FB_SYNC_VERT_HIGH_ACT)
- temp_p.video |= PM3VideoControl_VSYNC_ACTIVE_HIGH;
- else
- temp_p.video |= PM3VideoControl_VSYNC_ACTIVE_LOW;
-
- if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_INTERLACED) {
- DPRINTK(1, "Interlaced mode not supported\n\n");
- return (-EINVAL);
- }
-
- if ((var->vmode & FB_VMODE_MASK) == FB_VMODE_DOUBLE)
- temp_p.video |= PM3VideoControl_LINE_DOUBLE_ON;
- else
- temp_p.video |= PM3VideoControl_LINE_DOUBLE_OFF;
-
- if (var->activate == FB_ACTIVATE_NOW)
- temp_p.video |= PM3VideoControl_ENABLE;
- else {
- temp_p.video |= PM3VideoControl_DISABLE;
- DPRINTK(2, "PM3Video disabled\n");
- }
- switch (temp_p.depth) {
- case 8:
- temp_p.video |= PM3VideoControl_PIXELSIZE_8BIT;
- break;
- case 12:
- case 15:
- case 16:
- temp_p.video |= PM3VideoControl_PIXELSIZE_16BIT;
- break;
- case 32:
- temp_p.video |= PM3VideoControl_PIXELSIZE_32BIT;
- break;
- default:
- DPRINTK(1, "Unsupported depth\n");
- break;
- }
+ /* This has to been done !!! */
+ if (fb_alloc_cmap(&info->cmap, 256, 0) < 0) {
+ retval = -ENOMEM;
+ goto err_exit_both;
}
- (*p) = temp_p;
-#ifdef PM3FB_USE_ACCEL
- if (var->accel_flags & FB_ACCELF_TEXT)
- noaccel[l_fb_info->board_num] = 0;
- else
- noaccel[l_fb_info->board_num] = 1;
-#endif /* PM3FB_USE_ACCEL */
-
- return (0);
-}
-
-static void pm3fb_encode_depth(struct fb_var_screeninfo *var, long d)
-{
- switch (d) {
- case 8:
- var->red.length = var->green.length = var->blue.length = 8;
- var->red.offset = var->green.offset = var->blue.offset = 0;
- var->transp.offset = var->transp.length = 0;
- break;
-
- case 12:
- var->red.offset = 8;
- var->red.length = 4;
- var->green.offset = 4;
- var->green.length = 4;
- var->blue.offset = 0;
- var->blue.length = 4;
- var->transp.offset = 12;
- var->transp.length = 4;
- break;
-
- case 15:
- var->red.offset = 10;
- var->red.length = 5;
- var->green.offset = 5;
- var->green.length = 5;
- var->blue.offset = 0;
- var->blue.length = 5;
- var->transp.offset = 15;
- var->transp.length = 1;
- break;
-
- case 16:
- var->red.offset = 11;
- var->red.length = 5;
- var->green.offset = 5;
- var->green.length = 6;
- var->blue.offset = 0;
- var->blue.length = 5;
- var->transp.offset = var->transp.length = 0;
- break;
-
- case 32:
- var->transp.offset = 24;
- var->red.offset = 16;
- var->green.offset = 8;
- var->blue.offset = 0;
- var->red.length = var->green.length =
- var->blue.length = var->transp.length = 8;
- break;
+ /*
+ * For drivers that can...
+ */
+ pm3fb_check_var(&info->var, info);
- default:
- DPRINTK(1, "Unsupported depth %ld\n", d);
- break;
+ if (register_framebuffer(info) < 0) {
+ retval = -EINVAL;
+ goto err_exit_all;
}
-}
-
-static int pm3fb_encode_var(struct fb_var_screeninfo *var,
- const void *par, struct fb_info_gen *info)
-{
- struct pm3fb_par *p = (struct pm3fb_par *) par;
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
-
- u32 base;
-
- DTRACE;
-
- DASSERT((var != NULL), "fb_var_screeninfo* not NULL");
- DASSERT((p != NULL), "pm3fb_par* not NULL");
- DASSERT((info != NULL), "fb_info_gen* not NULL");
-
- memset(var, 0, sizeof(struct fb_var_screeninfo));
-
-#ifdef PM3FB_USE_ACCEL
- if (!(noaccel[l_fb_info->board_num]))
- var->accel_flags |= FB_ACCELF_TEXT;
-#endif /* PM3FB_USE_ACCEL */
-
- var->xres_virtual = p->width;
- var->yres_virtual = p->height;
- var->xres = p->htotal - p->hbend;
- var->yres = p->vtotal - p->vbend;
-
- DPRINTK(2, "xres = %d, yres : %d\n", var->xres, var->yres);
-
- var->right_margin = p->hsstart;
- var->hsync_len = p->hsend - p->hsstart;
- var->left_margin = p->hbend - p->hsend;
- var->lower_margin = p->vsstart;
- var->vsync_len = p->vsend - p->vsstart;
- var->upper_margin = p->vbend - p->vsend;
- var->bits_per_pixel = depth2bpp(p->depth);
-
- pm3fb_encode_depth(var, p->depth);
-
- base = pm3fb_Unshiftbpp(l_fb_info, p->depth, p->base);
-
- var->xoffset = base % var->xres;
- var->yoffset = base / var->xres;
-
- var->height = var->width = -1;
-
- var->pixclock = KHZ2PICOS(p->pixclock);
-
- if ((p->video & PM3VideoControl_HSYNC_MASK) ==
- PM3VideoControl_HSYNC_ACTIVE_HIGH)
- var->sync |= FB_SYNC_HOR_HIGH_ACT;
- if ((p->video & PM3VideoControl_VSYNC_MASK) ==
- PM3VideoControl_VSYNC_ACTIVE_HIGH)
- var->sync |= FB_SYNC_VERT_HIGH_ACT;
- if (p->video & PM3VideoControl_LINE_DOUBLE_ON)
- var->vmode = FB_VMODE_DOUBLE;
-
- return (0);
-}
-
-static void pm3fb_get_par(void *par, struct fb_info_gen *info)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
-
- DTRACE;
+ printk(KERN_INFO "fb%d: %s frame buffer device\n", info->node,
+ info->fix.id);
+ pci_set_drvdata(dev, info); /* or dev_set_drvdata(device, info) */
+ return 0;
- if (!current_par_valid[l_fb_info->board_num]) {
- if (l_fb_info->use_current)
- pm3fb_read_mode(l_fb_info, l_fb_info->current_par);
- else
- memcpy(l_fb_info->current_par,
- &(mode_base[0].user_mode),
- sizeof(struct pm3fb_par));
- current_par_valid[l_fb_info->board_num] = 1;
- }
- *((struct pm3fb_par *) par) = *(l_fb_info->current_par);
+ err_exit_all:
+ fb_dealloc_cmap(&info->cmap);
+ err_exit_both:
+ iounmap(info->screen_base);
+ release_mem_region(pm3fb_fix.smem_start, pm3fb_fix.smem_len);
+ err_exit_mmio:
+ iounmap(par->v_regs);
+ release_mem_region(pm3fb_fix.mmio_start, pm3fb_fix.mmio_len);
+ err_exit_neither:
+ framebuffer_release(info);
+ return retval;
}
-static void pm3fb_set_par(const void *par, struct fb_info_gen *info)
+ /*
+ * Cleanup
+ */
+static void __devexit pm3fb_remove(struct pci_dev *dev)
{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
-
- DTRACE;
-
- *(l_fb_info->current_par) = *((struct pm3fb_par *) par);
- current_par_valid[l_fb_info->board_num] = 1;
-
- pm3fb_write_mode(l_fb_info);
+ struct fb_info *info = pci_get_drvdata(dev);
-#ifdef PM3FB_USE_ACCEL
- pm3fb_init_engine(l_fb_info);
-#endif /* PM3FB_USE_ACCEL */
-}
+ if (info) {
+ struct fb_fix_screeninfo *fix = &info->fix;
+ struct pm3_par *par = info->par;
-static void pm3fb_set_color(struct pm3fb_info *l_fb_info,
- unsigned char regno, unsigned char r,
- unsigned char g, unsigned char b)
-{
- DTRACE;
+ unregister_framebuffer(info);
+ fb_dealloc_cmap(&info->cmap);
- PM3_SLOW_WRITE_REG(PM3RD_PaletteWriteAddress, regno);
- PM3_SLOW_WRITE_REG(PM3RD_PaletteData, r);
- PM3_SLOW_WRITE_REG(PM3RD_PaletteData, g);
- PM3_SLOW_WRITE_REG(PM3RD_PaletteData, b);
-}
+ iounmap(info->screen_base);
+ release_mem_region(fix->smem_start, fix->smem_len);
+ iounmap(par->v_regs);
+ release_mem_region(fix->mmio_start, fix->mmio_len);
-static int pm3fb_getcolreg(unsigned regno, unsigned *red, unsigned *green,
- unsigned *blue, unsigned *transp,
- struct fb_info *info)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
-
- DTRACE;
-
- if (regno < 256) {
- *red =
- l_fb_info->palette[regno].red << 8 | l_fb_info->
- palette[regno].red;
- *green =
- l_fb_info->palette[regno].green << 8 | l_fb_info->
- palette[regno].green;
- *blue =
- l_fb_info->palette[regno].blue << 8 | l_fb_info->
- palette[regno].blue;
- *transp =
- l_fb_info->palette[regno].transp << 8 | l_fb_info->
- palette[regno].transp;
+ pci_set_drvdata(dev, NULL);
+ framebuffer_release(info);
}
- return (regno > 255);
}
-static int pm3fb_setcolreg(unsigned regno, unsigned red, unsigned green,
- unsigned blue, unsigned transp,
- struct fb_info *info)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
+static struct pci_device_id pm3fb_id_table[] = {
+ { PCI_VENDOR_ID_3DLABS, 0x0a,
+ PCI_ANY_ID, PCI_ANY_ID, PCI_BASE_CLASS_DISPLAY << 16,
+ 0xff0000, 0 },
+ { 0, }
+};
- DTRACE;
+/* For PCI drivers */
+static struct pci_driver pm3fb_driver = {
+ .name = "pm3fb",
+ .id_table = pm3fb_id_table,
+ .probe = pm3fb_probe,
+ .remove = __devexit_p(pm3fb_remove),
+};
- if (regno < 16) {
- switch (l_fb_info->current_par->depth) {
-#ifdef FBCON_HAS_CFB8
- case 8:
- break;
-#endif
-#ifdef FBCON_HAS_CFB16
- case 12:
- l_fb_info->cmap.cmap12[regno] =
- (((u32) red & 0xf000) >> 4) |
- (((u32) green & 0xf000) >> 8) |
- (((u32) blue & 0xf000) >> 12);
- break;
+MODULE_DEVICE_TABLE(pci, pm3fb_id_table);
- case 15:
- l_fb_info->cmap.cmap15[regno] =
- (((u32) red & 0xf800) >> 1) |
- (((u32) green & 0xf800) >> 6) |
- (((u32) blue & 0xf800) >> 11);
- break;
-
- case 16:
- l_fb_info->cmap.cmap16[regno] =
- ((u32) red & 0xf800) |
- (((u32) green & 0xfc00) >> 5) |
- (((u32) blue & 0xf800) >> 11);
- break;
-#endif
-#ifdef FBCON_HAS_CFB32
- case 32:
- l_fb_info->cmap.cmap32[regno] =
- (((u32) transp & 0xff00) << 16) |
- (((u32) red & 0xff00) << 8) |
- (((u32) green & 0xff00)) |
- (((u32) blue & 0xff00) >> 8);
- break;
-#endif
- default:
- DPRINTK(1, "bad depth %u\n",
- l_fb_info->current_par->depth);
- break;
- }
- }
- if (regno < 256) {
- l_fb_info->palette[regno].red = red >> 8;
- l_fb_info->palette[regno].green = green >> 8;
- l_fb_info->palette[regno].blue = blue >> 8;
- l_fb_info->palette[regno].transp = transp >> 8;
- if (l_fb_info->current_par->depth == 8)
- pm3fb_set_color(l_fb_info, regno, red >> 8,
- green >> 8, blue >> 8);
- }
- return (regno > 255);
-}
-
-static int pm3fb_blank(int blank_mode, struct fb_info_gen *info)
+int __init pm3fb_init(void)
{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
- u32 video;
-
- DTRACE;
-
- if (!current_par_valid[l_fb_info->board_num])
- return (1);
-
- video = l_fb_info->current_par->video;
-
/*
- * Oxygen VX1 - it appears that setting PM3VideoControl and
- * then PM3RD_SyncControl to the same SYNC settings undoes
- * any net change - they seem to xor together. Only set the
- * sync options in PM3RD_SyncControl. --rmk
+ * For kernel boot options (in 'video=pm3fb:<options>' format)
*/
- video &= ~(PM3VideoControl_HSYNC_MASK |
- PM3VideoControl_VSYNC_MASK);
- video |= PM3VideoControl_HSYNC_ACTIVE_HIGH |
- PM3VideoControl_VSYNC_ACTIVE_HIGH;
-
- if (blank_mode > 0) {
- switch (blank_mode - 1) {
-
- case VESA_NO_BLANKING: /* FIXME */
- video = video & ~(PM3VideoControl_ENABLE);
- break;
-
- case VESA_HSYNC_SUSPEND:
- video = video & ~(PM3VideoControl_HSYNC_MASK |
- PM3VideoControl_BLANK_ACTIVE_LOW);
- break;
- case VESA_VSYNC_SUSPEND:
- video = video & ~(PM3VideoControl_VSYNC_MASK |
- PM3VideoControl_BLANK_ACTIVE_LOW);
- break;
- case VESA_POWERDOWN:
- video = video & ~(PM3VideoControl_HSYNC_MASK |
- PM3VideoControl_VSYNC_MASK |
- PM3VideoControl_BLANK_ACTIVE_LOW);
- break;
- default:
- DPRINTK(1, "Unsupported blanking %d\n",
- blank_mode);
- return (1);
- break;
- }
- }
-
- PM3_SLOW_WRITE_REG(PM3VideoControl, video);
+#ifndef MODULE
+ char *option = NULL;
- return (0);
-}
-
-static void pm3fb_set_disp(const void *par, struct display *disp,
- struct fb_info_gen *info)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
- struct pm3fb_par *p = (struct pm3fb_par *) par;
- u32 flags;
-
- DTRACE;
-
- local_irq_save(flags);
- info->info.screen_base = l_fb_info->v_fb;
- switch (p->depth) {
-#ifdef FBCON_HAS_CFB8
- case 8:
-#ifdef PM3FB_USE_ACCEL
- if (!(noaccel[l_fb_info->board_num]))
- disp->dispsw = &pm3fb_cfb8;
- else
-#endif /* PM3FB_USE_ACCEL */
- disp->dispsw = &fbcon_cfb8;
- break;
+ if (fb_get_options("pm3fb", &option))
+ return -ENODEV;
+ pm3fb_setup(option);
#endif
-#ifdef FBCON_HAS_CFB16
- case 12:
-#ifdef PM3FB_USE_ACCEL
- if (!(noaccel[l_fb_info->board_num]))
- disp->dispsw = &pm3fb_cfb16;
- else
-#endif /* PM3FB_USE_ACCEL */
- disp->dispsw = &fbcon_cfb16;
- disp->dispsw_data = l_fb_info->cmap.cmap12;
- break;
- case 15:
-#ifdef PM3FB_USE_ACCEL
- if (!(noaccel[l_fb_info->board_num]))
- disp->dispsw = &pm3fb_cfb16;
- else
-#endif /* PM3FB_USE_ACCEL */
- disp->dispsw = &fbcon_cfb16;
- disp->dispsw_data = l_fb_info->cmap.cmap15;
- break;
- case 16:
-#ifdef PM3FB_USE_ACCEL
- if (!(noaccel[l_fb_info->board_num]))
- disp->dispsw = &pm3fb_cfb16;
- else
-#endif /* PM3FB_USE_ACCEL */
- disp->dispsw = &fbcon_cfb16;
- disp->dispsw_data = l_fb_info->cmap.cmap16;
- break;
-#endif
-#ifdef FBCON_HAS_CFB32
- case 32:
-#ifdef PM3FB_USE_ACCEL
- if (!(noaccel[l_fb_info->board_num]))
- disp->dispsw = &pm3fb_cfb32;
- else
-#endif /* PM3FB_USE_ACCEL */
- disp->dispsw = &fbcon_cfb32;
- disp->dispsw_data = l_fb_info->cmap.cmap32;
- break;
-#endif /* FBCON_HAS_CFB32 */
- default:
- disp->dispsw = &fbcon_dummy;
- DPRINTK(1, "Invalid depth, using fbcon_dummy\n");
- break;
- }
- local_irq_restore(flags);
-}
-
-/* */
-static void pm3fb_detect(void)
-{
- struct pci_dev *dev_array[PM3_MAX_BOARD];
- struct pci_dev *dev = NULL;
- struct pm3fb_info *l_fb_info = &(fb_info[0]);
- unsigned long i, j, done;
-
- DTRACE;
-
- for (i = 0; i < PM3_MAX_BOARD; i++) {
- dev_array[i] = NULL;
- fb_info[i].dev = NULL;
- }
-
- dev = pci_get_device(PCI_VENDOR_ID_3DLABS,
- PCI_DEVICE_ID_3DLABS_PERMEDIA3, dev);
-
- for (i = 0; ((i < PM3_MAX_BOARD) && dev); i++) {
- dev_array[i] = dev;
- dev = pci_get_device(PCI_VENDOR_ID_3DLABS,
- PCI_DEVICE_ID_3DLABS_PERMEDIA3, dev);
- }
-
- if (dev) { /* more than PM3_MAX_BOARD */
- printk(KERN_WARNING "pm3fb: Warning: more than %d boards found\n",
- PM3_MAX_BOARD);
- }
-
- if (!dev_array[0]) { /* not a single board, abort */
- return;
- }
-
- /* allocate user-defined boards */
- for (i = 0; i < PM3_MAX_BOARD; i++) {
- if ((bus[i] >= 0) && (slot[i] >= 0) && (func[i] >= 0)) {
- for (j = 0; j < PM3_MAX_BOARD; j++) {
- if ((dev_array[j] != NULL) &&
- (dev_array[j]->bus->number == bus[i])
- && (PCI_SLOT(dev_array[j]->devfn) ==
- slot[i])
- && (PCI_FUNC(dev_array[j]->devfn) ==
- func[i])) {
- fb_info[i].dev = dev_array[j];
- dev_array[j] = NULL;
- }
- }
- }
- }
- /* allocate remaining boards */
- for (i = 0; i < PM3_MAX_BOARD; i++) {
- if (fb_info[i].dev == NULL) {
- done = 0;
- for (j = 0; ((j < PM3_MAX_BOARD) && (!done)); j++) {
- if (dev_array[j] != NULL) {
- fb_info[i].dev = dev_array[j];
- dev_array[j] = NULL;
- done = 1;
- }
- }
- }
- }
-
- /* at that point, all PCI Permedia3 are detected and allocated */
- /* now, initialize... or not */
- for (i = 0; i < PM3_MAX_BOARD; i++) {
- l_fb_info = &(fb_info[i]);
- if (l_fb_info->dev && !disable[i]) { /* PCI device was found and not disabled by user */
- DPRINTK(2,
- "found @%lx Vendor %lx Device %lx ; base @ : %lx - %lx - %lx - %lx - %lx - %lx, irq %ld\n",
- (unsigned long) l_fb_info->dev,
- (unsigned long) l_fb_info->dev->vendor,
- (unsigned long) l_fb_info->dev->device,
- (unsigned long)
- pci_resource_start(l_fb_info->dev, 0),
- (unsigned long)
- pci_resource_start(l_fb_info->dev, 1),
- (unsigned long)
- pci_resource_start(l_fb_info->dev, 2),
- (unsigned long)
- pci_resource_start(l_fb_info->dev, 3),
- (unsigned long)
- pci_resource_start(l_fb_info->dev, 4),
- (unsigned long)
- pci_resource_start(l_fb_info->dev, 5),
- (unsigned long) l_fb_info->dev->irq);
-
- l_fb_info->pIOBase =
- (unsigned char *)
- pci_resource_start(l_fb_info->dev, 0);
-#ifdef __BIG_ENDIAN
- l_fb_info->pIOBase += PM3_REGS_SIZE;
-#endif
- l_fb_info->vIOBase = (unsigned char *) -1;
- l_fb_info->p_fb =
- (unsigned char *)
- pci_resource_start(l_fb_info->dev, 1);
- l_fb_info->v_fb = (unsigned char *) -1;
-
- if (!request_mem_region
- ((unsigned long)l_fb_info->p_fb, 64 * 1024 * 1024, /* request full aperture size */
- "pm3fb")) {
- printk
- (KERN_ERR "pm3fb: Error: couldn't request framebuffer memory, board #%ld\n",
- l_fb_info->board_num);
- continue;
- }
- if (!request_mem_region
- ((unsigned long)l_fb_info->pIOBase, PM3_REGS_SIZE,
- "pm3fb I/O regs")) {
- printk
- (KERN_ERR "pm3fb: Error: couldn't request IObase memory, board #%ld\n",
- l_fb_info->board_num);
- continue;
- }
- if (forcesize[l_fb_info->board_num])
- l_fb_info->fb_size = forcesize[l_fb_info->board_num];
-
- l_fb_info->fb_size =
- pm3fb_size_memory(l_fb_info);
- if (l_fb_info->fb_size) {
- (void) pci_enable_device(l_fb_info->dev);
- pm3fb_common_init(l_fb_info);
- } else
- printk(KERN_ERR "pm3fb: memory problem, not enabling board #%ld\n", l_fb_info->board_num);
- }
- }
-}
-
-static int pm3fb_pan_display(const struct fb_var_screeninfo *var,
- struct fb_info_gen *info)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
-
- DTRACE;
-
- if (!current_par_valid[l_fb_info->board_num])
- return -EINVAL;
-
- l_fb_info->current_par->base = /* in 128 bits chunk - i.e. AFTER Shiftbpp */
- pm3fb_Shiftbpp(l_fb_info,
- l_fb_info->current_par->depth,
- (var->yoffset * l_fb_info->current_par->width) +
- var->xoffset);
- PM3_SLOW_WRITE_REG(PM3ScreenBase, l_fb_info->current_par->base);
- return 0;
-}
-static int pm3fb_ioctl(struct fb_info *info, u_int cmd, u_long arg)
-{
- struct pm3fb_info *l_fb_info = (struct pm3fb_info *) info;
- u32 cm, i;
-#ifdef PM3FB_MASTER_DEBUG
- char cc[3];
-#endif /* PM3FB_MASTER_DEBUG */
-
- switch(cmd)
- {
-#ifdef PM3FB_MASTER_DEBUG
- case PM3FBIO_CLEARMEMORY:
- if (copy_from_user(&cm, (void *)arg, sizeof(u32)))
- return(-EFAULT);
- pm3fb_clear_memory(l_fb_info, cm);
- return(0);
- break;
-
- case PM3FBIO_CLEARCMAP:
- if (copy_from_user(cc, (void*)arg, 3 * sizeof(char)))
- return(-EFAULT);
- pm3fb_clear_colormap(l_fb_info, cc[0], cc[1], cc[2]);
- return(0);
- break;
-#endif /* PM3FB_MASTER_DEBUG */
-
- case PM3FBIO_RESETCHIP:
- cm = 1;
- PM3_SLOW_WRITE_REG(PM3ResetStatus, 1);
- for (i = 0 ; (i < 10000) && cm ; i++)
- {
- PM3_DELAY(10);
- cm = PM3_READ_REG(PM3ResetStatus);
- }
- if (cm)
- {
- printk(KERN_ERR "pm3fb: chip reset failed with status 0x%x\n", cm);
- return(-EIO);
- }
- /* first thing first, reload memory timings */
- pm3fb_write_memory_timings(l_fb_info);
-#ifdef PM3FB_USE_ACCEL
- pm3fb_init_engine(l_fb_info);
-#endif /* PM3FB_USE_ACCEL */
- pm3fb_write_mode(l_fb_info);
- return(0);
- break;
-
- default:
- DPRINTK(2, "unknown ioctl: %d (%x)\n", cmd, cmd);
- return(-EINVAL);
- }
+ return pci_register_driver(&pm3fb_driver);
}
-/* ****************************************** */
-/* ***** standard FB API init functions ***** */
-/* ****************************************** */
-
-int __init pm3fb_setup(char *options)
+static void __exit pm3fb_exit(void)
{
- long opsi = strlen(options);
-
- DTRACE;
-
- memcpy(g_options, options,
- ((opsi + 1) >
- PM3_OPTIONS_SIZE) ? PM3_OPTIONS_SIZE : (opsi + 1));
- g_options[PM3_OPTIONS_SIZE - 1] = 0;
-
- return (0);
+ pci_unregister_driver(&pm3fb_driver);
}
-int __init pm3fb_init(void)
-{
- DTRACE;
-
- DPRINTK(2, "This is pm3fb.c, CVS version: $Header: /cvsroot/linux/drivers/video/pm3fb.c,v 1.1 2002/02/25 19:11:06 marcelo Exp $");
-
- pm3fb_real_setup(g_options);
-
- pm3fb_detect();
-
- if (!fb_info[0].dev) { /* not even one board ??? */
- DPRINTK(1, "No PCI Permedia3 board detected\n");
- }
- return (0);
-}
-
-/* ************************* */
-/* **** Module support ***** */
-/* ************************* */
-
#ifdef MODULE
-MODULE_AUTHOR("Romain Dolbeau");
-MODULE_DESCRIPTION("Permedia3 framebuffer device driver");
-static char *mode[PM3_MAX_BOARD];
-module_param_array(mode, charp, NULL, 0);
-MODULE_PARM_DESC(mode,"video mode");
-module_param_array(disable, short, NULL, 0);
-MODULE_PARM_DESC(disable,"disable board");
-static short off[PM3_MAX_BOARD];
-module_param_array(off, short, NULL, 0);
-MODULE_PARM_DESC(off,"disable board");
-static char *pciid[PM3_MAX_BOARD];
-module_param_array(pciid, charp, NULL, 0);
-MODULE_PARM_DESC(pciid,"board PCI Id");
-module_param_array(noaccel, short, NULL, 0);
-MODULE_PARM_DESC(noaccel,"disable accel");
-static char *font[PM3_MAX_BOARD];
-module_param_array(font, charp, NULL, 0);
-MODULE_PARM_DESC(font,"choose font");
-module_param(depth, short, NULL, 0);
-MODULE_PARM_DESC(depth,"boot-time depth");
-module_param(printtimings, short, NULL, 0);
-MODULE_PARM_DESC(printtimings, "print the memory timings of the card(s)");
-module_param(forcesize, short, NULL, 0);
-MODULE_PARM_DESC(forcesize, "force specified memory size");
-/*
-MODULE_SUPPORTED_DEVICE("Permedia3 PCI boards")
-MODULE_GENERIC_TABLE(gtype,name)
-MODULE_DEVICE_TABLE(type,name)
-*/
-
-void pm3fb_build_options(void)
-{
- int i;
- char ts[128];
-
- strcpy(g_options, "pm3fb");
- for (i = 0; i < PM3_MAX_BOARD ; i++)
- {
- if (mode[i])
- {
- sprintf(ts, ",mode:%d:%s", i, mode[i]);
- strncat(g_options, ts, PM3_OPTIONS_SIZE - strlen(g_options));
- }
- if (disable[i] || off[i])
- {
- sprintf(ts, ",disable:%d:", i);
- strncat(g_options, ts, PM3_OPTIONS_SIZE - strlen(g_options));
- }
- if (pciid[i])
- {
- sprintf(ts, ",pciid:%d:%s", i, pciid[i]);
- strncat(g_options, ts, PM3_OPTIONS_SIZE - strlen(g_options));
- }
- if (noaccel[i])
- {
- sprintf(ts, ",noaccel:%d:", i);
- strncat(g_options, ts, PM3_OPTIONS_SIZE - strlen(g_options));
- }
- if (font[i])
- {
- sprintf(ts, ",font:%d:%s", i, font[i]);
- strncat(g_options, ts, PM3_OPTIONS_SIZE - strlen(g_options));
- }
- if (depth[i])
- {
- sprintf(ts, ",depth:%d:%d", i, depth[i]);
- strncat(g_options, ts, PM3_OPTIONS_SIZE - strlen(g_options));
- }
- }
- g_options[PM3_OPTIONS_SIZE - 1] = '\0';
- DPRINTK(1, "pm3fb use options: %s\n", g_options);
-}
+ /*
+ * Setup
+ */
-int init_module(void)
+/*
+ * Only necessary if your driver takes special options,
+ * otherwise we fall back on the generic fb_setup().
+ */
+int __init pm3fb_setup(char *options)
{
- DTRACE;
-
- pm3fb_build_options();
-
- pm3fb_init();
-
+ /* Parse user speficied options (`video=pm3fb:') */
return 0;
}
-
-void cleanup_module(void)
-{
- DTRACE;
- {
- unsigned long i;
- struct pm3fb_info *l_fb_info;
- for (i = 0; i < PM3_MAX_BOARD; i++) {
- l_fb_info = &(fb_info[i]);
- pci_dev_put(l_fb_info->dev);
- if (l_fb_info->dev != NULL && !(disable[l_fb_info->board_num])) {
- if (l_fb_info->vIOBase != (unsigned char *) -1) {
- pm3fb_unmapIO(l_fb_info);
- release_mem_region(l_fb_info->p_fb,
- l_fb_info->fb_size);
- release_mem_region(l_fb_info->pIOBase,
- PM3_REGS_SIZE);
- }
- unregister_framebuffer(&l_fb_info->gen.info);
- }
- }
- }
-}
#endif /* MODULE */
+
+module_init(pm3fb_init);
+module_exit(pm3fb_exit);
+
+MODULE_LICENSE("GPL");
if (VGA_RD08(par->riva.PCIO, 0x3d5) & 0x04)
val = 1;
- val = VGA_RD08(par->riva.PCIO, 0x3d5);
-
return val;
}
obj-$(CONFIG_INOTIFY) += inotify.o
obj-$(CONFIG_INOTIFY_USER) += inotify_user.o
obj-$(CONFIG_EPOLL) += eventpoll.o
+obj-$(CONFIG_ANON_INODES) += anon_inodes.o
+obj-$(CONFIG_SIGNALFD) += signalfd.o
+obj-$(CONFIG_TIMERFD) += timerfd.o
+obj-$(CONFIG_EVENTFD) += eventfd.o
obj-$(CONFIG_COMPAT) += compat.o compat_ioctl.o
nfsd-$(CONFIG_NFSD) := nfsctl.o
#define AFS_MAXCELLNAME 64 /* maximum length of a cell name */
#define AFS_MAXVOLNAME 64 /* maximum length of a volume name */
+#define AFSNAMEMAX 256 /* maximum length of a filename plus NUL */
+#define AFSPATHMAX 1024 /* maximum length of a pathname plus NUL */
+#define AFSOPAQUEMAX 1024 /* maximum length of an opaque field */
typedef unsigned afs_volid_t;
typedef unsigned afs_vnodeid_t;
time_t creation; /* volume creation time */
};
+/*
+ * AFS volume status record
+ */
+struct afs_volume_status {
+ u32 vid; /* volume ID */
+ u32 parent_id; /* parent volume ID */
+ u8 online; /* true if volume currently online and available */
+ u8 in_service; /* true if volume currently in service */
+ u8 blessed; /* same as in_service */
+ u8 needs_salvage; /* true if consistency checking required */
+ u32 type; /* volume type (afs_voltype_t) */
+ u32 min_quota; /* minimum space set aside (blocks) */
+ u32 max_quota; /* maximum space this volume may occupy (blocks) */
+ u32 blocks_in_use; /* space this volume currently occupies (blocks) */
+ u32 part_blocks_avail; /* space available in volume's partition */
+ u32 part_max_blocks; /* size of volume's partition */
+};
+
+#define AFS_BLOCK_SIZE 1024
+
#endif /* AFS_H */
FSMAKEDIR = 141, /* AFS Create a directory */
FSREMOVEDIR = 142, /* AFS Remove a directory */
FSGIVEUPCALLBACKS = 147, /* AFS Discard callback promises */
- FSGETVOLUMEINFO = 148, /* AFS Get root volume information */
+ FSGETVOLUMEINFO = 148, /* AFS Get information about a volume */
+ FSGETVOLUMESTATUS = 149, /* AFS Get volume status information */
FSGETROOTVOLUME = 151, /* AFS Get root volume name */
FSLOOKUP = 161, /* AFS lookup file in directory */
FSFETCHDATA64 = 65537, /* AFS Fetch file data */
ASSERTCMP(dentry->d_inode, ==, NULL);
- if (dentry->d_name.len > 255) {
+ if (dentry->d_name.len >= AFSNAMEMAX) {
_leave(" = -ENAMETOOLONG");
return ERR_PTR(-ENAMETOOLONG);
}
dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, mode);
ret = -ENAMETOOLONG;
- if (dentry->d_name.len > 255)
+ if (dentry->d_name.len >= AFSNAMEMAX)
goto error;
key = afs_request_key(dvnode->volume->cell);
dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name);
ret = -ENAMETOOLONG;
- if (dentry->d_name.len > 255)
+ if (dentry->d_name.len >= AFSNAMEMAX)
goto error;
key = afs_request_key(dvnode->volume->cell);
dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name);
ret = -ENAMETOOLONG;
- if (dentry->d_name.len > 255)
+ if (dentry->d_name.len >= AFSNAMEMAX)
goto error;
key = afs_request_key(dvnode->volume->cell);
dvnode->fid.vid, dvnode->fid.vnode, dentry->d_name.name, mode);
ret = -ENAMETOOLONG;
- if (dentry->d_name.len > 255)
+ if (dentry->d_name.len >= AFSNAMEMAX)
goto error;
key = afs_request_key(dvnode->volume->cell);
dentry->d_name.name);
ret = -ENAMETOOLONG;
- if (dentry->d_name.len > 255)
+ if (dentry->d_name.len >= AFSNAMEMAX)
goto error;
key = afs_request_key(dvnode->volume->cell);
content);
ret = -ENAMETOOLONG;
- if (dentry->d_name.len > 255)
+ if (dentry->d_name.len >= AFSNAMEMAX)
goto error;
ret = -EINVAL;
- if (strlen(content) > 1023)
+ if (strlen(content) >= AFSPATHMAX)
goto error;
key = afs_request_key(dvnode->volume->cell);
new_dentry->d_name.name);
ret = -ENAMETOOLONG;
- if (new_dentry->d_name.len > 255)
+ if (new_dentry->d_name.len >= AFSNAMEMAX)
goto error;
key = afs_request_key(orig_dvnode->volume->cell);
{
int ret = 1;
- kenter("{%lu},%lu", page->index, offset);
+ _enter("{%lu},%lu", page->index, offset);
BUG_ON(!PageLocked(page));
*_bp = bp;
}
+/*
+ * decode an AFSFetchVolumeStatus block
+ */
+static void xdr_decode_AFSFetchVolumeStatus(const __be32 **_bp,
+ struct afs_volume_status *vs)
+{
+ const __be32 *bp = *_bp;
+
+ vs->vid = ntohl(*bp++);
+ vs->parent_id = ntohl(*bp++);
+ vs->online = ntohl(*bp++);
+ vs->in_service = ntohl(*bp++);
+ vs->blessed = ntohl(*bp++);
+ vs->needs_salvage = ntohl(*bp++);
+ vs->type = ntohl(*bp++);
+ vs->min_quota = ntohl(*bp++);
+ vs->max_quota = ntohl(*bp++);
+ vs->blocks_in_use = ntohl(*bp++);
+ vs->part_blocks_avail = ntohl(*bp++);
+ vs->part_max_blocks = ntohl(*bp++);
+ *_bp = bp;
+}
+
/*
* deliver reply data to an FS.FetchStatus
*/
return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
}
+
+/*
+ * deliver reply data to an FS.GetVolumeStatus
+ */
+static int afs_deliver_fs_get_volume_status(struct afs_call *call,
+ struct sk_buff *skb, bool last)
+{
+ const __be32 *bp;
+ char *p;
+ int ret;
+
+ _enter("{%u},{%u},%d", call->unmarshall, skb->len, last);
+
+ switch (call->unmarshall) {
+ case 0:
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the returned status record */
+ case 1:
+ _debug("extract status");
+ ret = afs_extract_data(call, skb, last, call->buffer,
+ 12 * 4);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+
+ bp = call->buffer;
+ xdr_decode_AFSFetchVolumeStatus(&bp, call->reply2);
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the volume name length */
+ case 2:
+ ret = afs_extract_data(call, skb, last, &call->tmp, 4);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+
+ call->count = ntohl(call->tmp);
+ _debug("volname length: %u", call->count);
+ if (call->count >= AFSNAMEMAX)
+ return -EBADMSG;
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the volume name */
+ case 3:
+ _debug("extract volname");
+ if (call->count > 0) {
+ ret = afs_extract_data(call, skb, last, call->reply3,
+ call->count);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+ }
+
+ p = call->reply3;
+ p[call->count] = 0;
+ _debug("volname '%s'", p);
+
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the volume name padding */
+ if ((call->count & 3) == 0) {
+ call->unmarshall++;
+ goto no_volname_padding;
+ }
+ call->count = 4 - (call->count & 3);
+
+ case 4:
+ ret = afs_extract_data(call, skb, last, call->buffer,
+ call->count);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+
+ call->offset = 0;
+ call->unmarshall++;
+ no_volname_padding:
+
+ /* extract the offline message length */
+ case 5:
+ ret = afs_extract_data(call, skb, last, &call->tmp, 4);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+
+ call->count = ntohl(call->tmp);
+ _debug("offline msg length: %u", call->count);
+ if (call->count >= AFSNAMEMAX)
+ return -EBADMSG;
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the offline message */
+ case 6:
+ _debug("extract offline");
+ if (call->count > 0) {
+ ret = afs_extract_data(call, skb, last, call->reply3,
+ call->count);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+ }
+
+ p = call->reply3;
+ p[call->count] = 0;
+ _debug("offline '%s'", p);
+
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the offline message padding */
+ if ((call->count & 3) == 0) {
+ call->unmarshall++;
+ goto no_offline_padding;
+ }
+ call->count = 4 - (call->count & 3);
+
+ case 7:
+ ret = afs_extract_data(call, skb, last, call->buffer,
+ call->count);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+
+ call->offset = 0;
+ call->unmarshall++;
+ no_offline_padding:
+
+ /* extract the message of the day length */
+ case 8:
+ ret = afs_extract_data(call, skb, last, &call->tmp, 4);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+
+ call->count = ntohl(call->tmp);
+ _debug("motd length: %u", call->count);
+ if (call->count >= AFSNAMEMAX)
+ return -EBADMSG;
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the message of the day */
+ case 9:
+ _debug("extract motd");
+ if (call->count > 0) {
+ ret = afs_extract_data(call, skb, last, call->reply3,
+ call->count);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+ }
+
+ p = call->reply3;
+ p[call->count] = 0;
+ _debug("motd '%s'", p);
+
+ call->offset = 0;
+ call->unmarshall++;
+
+ /* extract the message of the day padding */
+ if ((call->count & 3) == 0) {
+ call->unmarshall++;
+ goto no_motd_padding;
+ }
+ call->count = 4 - (call->count & 3);
+
+ case 10:
+ ret = afs_extract_data(call, skb, last, call->buffer,
+ call->count);
+ switch (ret) {
+ case 0: break;
+ case -EAGAIN: return 0;
+ default: return ret;
+ }
+
+ call->offset = 0;
+ call->unmarshall++;
+ no_motd_padding:
+
+ case 11:
+ _debug("trailer %d", skb->len);
+ if (skb->len != 0)
+ return -EBADMSG;
+ break;
+ }
+
+ if (!last)
+ return 0;
+
+ _leave(" = 0 [done]");
+ return 0;
+}
+
+/*
+ * destroy an FS.GetVolumeStatus call
+ */
+static void afs_get_volume_status_call_destructor(struct afs_call *call)
+{
+ kfree(call->reply3);
+ call->reply3 = NULL;
+ afs_flat_call_destructor(call);
+}
+
+/*
+ * FS.GetVolumeStatus operation type
+ */
+static const struct afs_call_type afs_RXFSGetVolumeStatus = {
+ .name = "FS.GetVolumeStatus",
+ .deliver = afs_deliver_fs_get_volume_status,
+ .abort_to_error = afs_abort_to_error,
+ .destructor = afs_get_volume_status_call_destructor,
+};
+
+/*
+ * fetch the status of a volume
+ */
+int afs_fs_get_volume_status(struct afs_server *server,
+ struct key *key,
+ struct afs_vnode *vnode,
+ struct afs_volume_status *vs,
+ const struct afs_wait_mode *wait_mode)
+{
+ struct afs_call *call;
+ __be32 *bp;
+ void *tmpbuf;
+
+ _enter("");
+
+ tmpbuf = kmalloc(AFSOPAQUEMAX, GFP_KERNEL);
+ if (!tmpbuf)
+ return -ENOMEM;
+
+ call = afs_alloc_flat_call(&afs_RXFSGetVolumeStatus, 2 * 4, 12 * 4);
+ if (!call) {
+ kfree(tmpbuf);
+ return -ENOMEM;
+ }
+
+ call->key = key;
+ call->reply = vnode;
+ call->reply2 = vs;
+ call->reply3 = tmpbuf;
+ call->service_id = FS_SERVICE;
+ call->port = htons(AFS_FS_PORT);
+
+ /* marshall the parameters */
+ bp = call->request;
+ bp[0] = htonl(FSGETVOLUMESTATUS);
+ bp[1] = htonl(vnode->fid.vid);
+
+ return afs_make_call(&server->addr, call, GFP_NOFS, wait_mode);
+}
*/
void afs_zap_data(struct afs_vnode *vnode)
{
- _enter("zap data {%x:%u}", vnode->fid.vid, vnode->fid.vnode);
+ _enter("{%x:%u}", vnode->fid.vid, vnode->fid.vnode);
/* nuke all the non-dirty pages that aren't locked, mapped or being
- * written back */
- invalidate_remote_inode(&vnode->vfs_inode);
+ * written back in a regular file and completely discard the pages in a
+ * directory or symlink */
+ if (S_ISREG(vnode->vfs_inode.i_mode))
+ invalidate_remote_inode(&vnode->vfs_inode);
+ else
+ invalidate_inode_pages2(vnode->vfs_inode.i_mapping);
}
/*
extern int afs_fs_setattr(struct afs_server *, struct key *,
struct afs_vnode *, struct iattr *,
const struct afs_wait_mode *);
+extern int afs_fs_get_volume_status(struct afs_server *, struct key *,
+ struct afs_vnode *,
+ struct afs_volume_status *,
+ const struct afs_wait_mode *);
/*
* inode.c
extern int afs_vnode_store_data(struct afs_writeback *, pgoff_t, pgoff_t,
unsigned, unsigned);
extern int afs_vnode_setattr(struct afs_vnode *, struct key *, struct iattr *);
+extern int afs_vnode_get_volume_status(struct afs_vnode *, struct key *,
+ struct afs_volume_status *);
/*
* volume.c
#include <linux/fs.h>
#include <linux/pagemap.h>
#include <linux/parser.h>
+#include <linux/statfs.h>
#include "internal.h"
#define AFS_FS_MAGIC 0x6B414653 /* 'kAFS' */
static void afs_i_init_once(void *foo, struct kmem_cache *cachep,
unsigned long flags);
-
static int afs_get_sb(struct file_system_type *fs_type,
int flags, const char *dev_name,
void *data, struct vfsmount *mnt);
-
static struct inode *afs_alloc_inode(struct super_block *sb);
-
static void afs_put_super(struct super_block *sb);
-
static void afs_destroy_inode(struct inode *inode);
+static int afs_statfs(struct dentry *dentry, struct kstatfs *buf);
struct file_system_type afs_fs_type = {
.owner = THIS_MODULE,
};
static const struct super_operations afs_super_ops = {
- .statfs = simple_statfs,
+ .statfs = afs_statfs,
.alloc_inode = afs_alloc_inode,
.drop_inode = generic_delete_inode,
.write_inode = afs_write_inode,
vnode->flags = 1 << AFS_VNODE_UNSET;
vnode->cb_promised = false;
+ _leave(" = %p", &vnode->vfs_inode);
return &vnode->vfs_inode;
}
{
struct afs_vnode *vnode = AFS_FS_I(inode);
- _enter("{%lu}", inode->i_ino);
+ _enter("%p{%x:%u}", inode, vnode->fid.vid, vnode->fid.vnode);
_debug("DESTROY INODE %p", inode);
kmem_cache_free(afs_inode_cachep, vnode);
atomic_dec(&afs_count_active_inodes);
}
+
+/*
+ * return information about an AFS volume
+ */
+static int afs_statfs(struct dentry *dentry, struct kstatfs *buf)
+{
+ struct afs_volume_status vs;
+ struct afs_vnode *vnode = AFS_FS_I(dentry->d_inode);
+ struct key *key;
+ int ret;
+
+ key = afs_request_key(vnode->volume->cell);
+ if (IS_ERR(key))
+ return PTR_ERR(key);
+
+ ret = afs_vnode_get_volume_status(vnode, key, &vs);
+ key_put(key);
+ if (ret < 0) {
+ _leave(" = %d", ret);
+ return ret;
+ }
+
+ buf->f_type = dentry->d_sb->s_magic;
+ buf->f_bsize = AFS_BLOCK_SIZE;
+ buf->f_namelen = AFSNAMEMAX - 1;
+
+ if (vs.max_quota == 0)
+ buf->f_blocks = vs.part_max_blocks;
+ else
+ buf->f_blocks = vs.max_quota;
+ buf->f_bavail = buf->f_bfree = buf->f_blocks - vs.blocks_in_use;
+ return 0;
+}
{
struct afs_server *server;
+ _enter("{%p}", vnode->server);
+
set_bit(AFS_VNODE_DELETED, &vnode->flags);
server = vnode->server;
- if (vnode->cb_promised) {
- spin_lock(&server->cb_lock);
+ if (server) {
if (vnode->cb_promised) {
- rb_erase(&vnode->cb_promise, &server->cb_promises);
- vnode->cb_promised = false;
+ spin_lock(&server->cb_lock);
+ if (vnode->cb_promised) {
+ rb_erase(&vnode->cb_promise,
+ &server->cb_promises);
+ vnode->cb_promised = false;
+ }
+ spin_unlock(&server->cb_lock);
}
- spin_unlock(&server->cb_lock);
- }
- spin_lock(&vnode->server->fs_lock);
- rb_erase(&vnode->server_rb, &vnode->server->fs_vnodes);
- spin_unlock(&vnode->server->fs_lock);
+ spin_lock(&server->fs_lock);
+ rb_erase(&vnode->server_rb, &server->fs_vnodes);
+ spin_unlock(&server->fs_lock);
- vnode->server = NULL;
- afs_put_server(server);
+ vnode->server = NULL;
+ afs_put_server(server);
+ } else {
+ ASSERT(!vnode->cb_promised);
+ }
+
+ _leave("");
}
/*
*/
static void afs_vnode_status_update_failed(struct afs_vnode *vnode, int ret)
{
- _enter("%p,%d", vnode, ret);
+ _enter("{%x:%u},%d", vnode->fid.vid, vnode->fid.vnode, ret);
spin_lock(&vnode->lock);
spin_unlock(&vnode->lock);
return PTR_ERR(server);
}
+
+/*
+ * get the status of a volume
+ */
+int afs_vnode_get_volume_status(struct afs_vnode *vnode, struct key *key,
+ struct afs_volume_status *vs)
+{
+ struct afs_server *server;
+ int ret;
+
+ _enter("%s{%x:%u.%u},%x,",
+ vnode->volume->vlocation->vldb.name,
+ vnode->fid.vid,
+ vnode->fid.vnode,
+ vnode->fid.unique,
+ key_serial(key));
+
+ /* this op will fetch the status */
+ spin_lock(&vnode->lock);
+ vnode->update_cnt++;
+ spin_unlock(&vnode->lock);
+
+ do {
+ /* pick a server to query */
+ server = afs_volume_pick_fileserver(vnode);
+ if (IS_ERR(server))
+ goto no_server;
+
+ _debug("USING SERVER: %08x\n", ntohl(server->addr.s_addr));
+
+ ret = afs_fs_get_volume_status(server, key, vnode, vs, &afs_sync_call);
+
+ } while (!afs_volume_release_fileserver(vnode, server, ret));
+
+ /* adjust the flags */
+ if (ret == 0) {
+ afs_vnode_finalise_status_update(vnode, server);
+ afs_put_server(server);
+ } else {
+ afs_vnode_status_update_failed(vnode, ret);
+ }
+
+ _leave(" = %d", ret);
+ return ret;
+
+no_server:
+ spin_lock(&vnode->lock);
+ vnode->update_cnt--;
+ ASSERTCMP(vnode->update_cnt, >=, 0);
+ spin_unlock(&vnode->lock);
+ return PTR_ERR(server);
+}
if (n == 0)
goto no_more;
if (pages[0]->index != start) {
- for (n--; n >= 0; n--)
- put_page(pages[n]);
+ do {
+ put_page(pages[--n]);
+ } while (n > 0);
goto no_more;
}
#include <linux/highmem.h>
#include <linux/workqueue.h>
#include <linux/security.h>
+#include <linux/eventfd.h>
#include <asm/kmap_types.h>
#include <asm/uaccess.h>
req->private = NULL;
req->ki_iovec = NULL;
INIT_LIST_HEAD(&req->ki_run_list);
+ req->ki_eventfd = ERR_PTR(-EINVAL);
/* Check if the completion queue has enough free space to
* accept an event from this io.
{
assert_spin_locked(&ctx->ctx_lock);
+ if (!IS_ERR(req->ki_eventfd))
+ fput(req->ki_eventfd);
if (req->ki_dtor)
req->ki_dtor(req);
if (req->ki_iovec != &req->ki_inline_vec)
return 1;
}
+ /*
+ * Check if the user asked us to deliver the result through an
+ * eventfd. The eventfd_signal() function is safe to be called
+ * from IRQ context.
+ */
+ if (!IS_ERR(iocb->ki_eventfd))
+ eventfd_signal(iocb->ki_eventfd, 1);
+
info = &ctx->ring_info;
/* add a completion event to the ring buffer.
ssize_t ret;
/* enforce forwards compatibility on users */
- if (unlikely(iocb->aio_reserved1 || iocb->aio_reserved2 ||
- iocb->aio_reserved3)) {
+ if (unlikely(iocb->aio_reserved1 || iocb->aio_reserved2)) {
pr_debug("EINVAL: io_submit: reserve field set\n");
return -EINVAL;
}
fput(file);
return -EAGAIN;
}
+ if (iocb->aio_flags & IOCB_FLAG_RESFD) {
+ /*
+ * If the IOCB_FLAG_RESFD flag of aio_flags is set, get an
+ * instance of the file* now. The file descriptor must be
+ * an eventfd() fd, and will be signaled for each completed
+ * event using the eventfd_signal() function.
+ */
+ req->ki_eventfd = eventfd_fget((int) iocb->aio_resfd);
+ if (unlikely(IS_ERR(req->ki_eventfd))) {
+ ret = PTR_ERR(req->ki_eventfd);
+ goto out_put_req;
+ }
+ }
req->ki_filp = file;
ret = put_user(req->ki_key, &user_iocb->aio_key);
--- /dev/null
+/*
+ * fs/anon_inodes.c
+ *
+ * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
+ *
+ * Thanks to Arnd Bergmann for code review and suggestions.
+ * More changes for Thomas Gleixner suggestions.
+ *
+ */
+
+#include <linux/file.h>
+#include <linux/poll.h>
+#include <linux/slab.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/mount.h>
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/magic.h>
+#include <linux/anon_inodes.h>
+
+#include <asm/uaccess.h>
+
+static struct vfsmount *anon_inode_mnt __read_mostly;
+static struct inode *anon_inode_inode;
+static const struct file_operations anon_inode_fops;
+
+static int anon_inodefs_get_sb(struct file_system_type *fs_type, int flags,
+ const char *dev_name, void *data,
+ struct vfsmount *mnt)
+{
+ return get_sb_pseudo(fs_type, "anon_inode:", NULL, ANON_INODE_FS_MAGIC,
+ mnt);
+}
+
+static int anon_inodefs_delete_dentry(struct dentry *dentry)
+{
+ /*
+ * We faked vfs to believe the dentry was hashed when we created it.
+ * Now we restore the flag so that dput() will work correctly.
+ */
+ dentry->d_flags |= DCACHE_UNHASHED;
+ return 1;
+}
+
+static struct file_system_type anon_inode_fs_type = {
+ .name = "anon_inodefs",
+ .get_sb = anon_inodefs_get_sb,
+ .kill_sb = kill_anon_super,
+};
+static struct dentry_operations anon_inodefs_dentry_operations = {
+ .d_delete = anon_inodefs_delete_dentry,
+};
+
+/**
+ * anon_inode_getfd - creates a new file instance by hooking it up to and
+ * anonymous inode, and a dentry that describe the "class"
+ * of the file
+ *
+ * @pfd: [out] pointer to the file descriptor
+ * @dpinode: [out] pointer to the inode
+ * @pfile: [out] pointer to the file struct
+ * @name: [in] name of the "class" of the new file
+ * @fops [in] file operations for the new file
+ * @priv [in] private data for the new file (will be file's private_data)
+ *
+ * Creates a new file by hooking it on a single inode. This is useful for files
+ * that do not need to have a full-fledged inode in order to operate correctly.
+ * All the files created with anon_inode_getfd() will share a single inode, by
+ * hence saving memory and avoiding code duplication for the file/inode/dentry
+ * setup.
+ */
+int anon_inode_getfd(int *pfd, struct inode **pinode, struct file **pfile,
+ const char *name, const struct file_operations *fops,
+ void *priv)
+{
+ struct qstr this;
+ struct dentry *dentry;
+ struct inode *inode;
+ struct file *file;
+ int error, fd;
+
+ if (IS_ERR(anon_inode_inode))
+ return -ENODEV;
+ file = get_empty_filp();
+ if (!file)
+ return -ENFILE;
+
+ inode = igrab(anon_inode_inode);
+ if (IS_ERR(inode)) {
+ error = PTR_ERR(inode);
+ goto err_put_filp;
+ }
+
+ error = get_unused_fd();
+ if (error < 0)
+ goto err_iput;
+ fd = error;
+
+ /*
+ * Link the inode to a directory entry by creating a unique name
+ * using the inode sequence number.
+ */
+ error = -ENOMEM;
+ this.name = name;
+ this.len = strlen(name);
+ this.hash = 0;
+ dentry = d_alloc(anon_inode_mnt->mnt_sb->s_root, &this);
+ if (!dentry)
+ goto err_put_unused_fd;
+ dentry->d_op = &anon_inodefs_dentry_operations;
+ /* Do not publish this dentry inside the global dentry hash table */
+ dentry->d_flags &= ~DCACHE_UNHASHED;
+ d_instantiate(dentry, inode);
+
+ file->f_path.mnt = mntget(anon_inode_mnt);
+ file->f_path.dentry = dentry;
+ file->f_mapping = inode->i_mapping;
+
+ file->f_pos = 0;
+ file->f_flags = O_RDWR;
+ file->f_op = fops;
+ file->f_mode = FMODE_READ | FMODE_WRITE;
+ file->f_version = 0;
+ file->private_data = priv;
+
+ fd_install(fd, file);
+
+ *pfd = fd;
+ *pinode = inode;
+ *pfile = file;
+ return 0;
+
+err_put_unused_fd:
+ put_unused_fd(fd);
+err_iput:
+ iput(inode);
+err_put_filp:
+ put_filp(file);
+ return error;
+}
+
+/*
+ * A single inode exist for all anon_inode files. Contrary to pipes,
+ * anon_inode inodes has no per-instance data associated, so we can avoid
+ * the allocation of multiple of them.
+ */
+static struct inode *anon_inode_mkinode(void)
+{
+ struct inode *inode = new_inode(anon_inode_mnt->mnt_sb);
+
+ if (!inode)
+ return ERR_PTR(-ENOMEM);
+
+ inode->i_fop = &anon_inode_fops;
+
+ /*
+ * Mark the inode dirty from the very beginning,
+ * that way it will never be moved to the dirty
+ * list because mark_inode_dirty() will think
+ * that it already _is_ on the dirty list.
+ */
+ inode->i_state = I_DIRTY;
+ inode->i_mode = S_IRUSR | S_IWUSR;
+ inode->i_uid = current->fsuid;
+ inode->i_gid = current->fsgid;
+ inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
+ return inode;
+}
+
+static int __init anon_inode_init(void)
+{
+ int error;
+
+ error = register_filesystem(&anon_inode_fs_type);
+ if (error)
+ goto err_exit;
+ anon_inode_mnt = kern_mount(&anon_inode_fs_type);
+ if (IS_ERR(anon_inode_mnt)) {
+ error = PTR_ERR(anon_inode_mnt);
+ goto err_unregister_filesystem;
+ }
+ anon_inode_inode = anon_inode_mkinode();
+ if (IS_ERR(anon_inode_inode)) {
+ error = PTR_ERR(anon_inode_inode);
+ goto err_mntput;
+ }
+
+ return 0;
+
+err_mntput:
+ mntput(anon_inode_mnt);
+err_unregister_filesystem:
+ unregister_filesystem(&anon_inode_fs_type);
+err_exit:
+ panic(KERN_ERR "anon_inode_init() failed (%d)\n", error);
+}
+
+fs_initcall(anon_inode_init);
+
struct autofs_sb_info {
u32 magic;
struct file *pipe;
- pid_t oz_pgrp;
+ struct pid *oz_pgrp;
int catatonic;
struct super_block *sb;
unsigned long exp_timeout;
filesystem without "magic".) */
static inline int autofs_oz_mode(struct autofs_sb_info *sbi) {
- return sbi->catatonic || process_group(current) == sbi->oz_pgrp;
+ return sbi->catatonic || task_pgrp(current) == sbi->oz_pgrp;
}
/* Hash operations */
if (!sbi)
goto out_kill_sb;
- if ( !sbi->catatonic )
+ if (!sbi->catatonic)
autofs_catatonic_mode(sbi); /* Free wait queues, close pipe */
+ put_pid(sbi->oz_pgrp);
+
autofs_hash_nuke(sbi);
- for ( n = 0 ; n < AUTOFS_MAX_SYMLINKS ; n++ ) {
- if ( test_bit(n, sbi->symlink_bitmap) )
+ for (n = 0; n < AUTOFS_MAX_SYMLINKS; n++) {
+ if (test_bit(n, sbi->symlink_bitmap))
kfree(sbi->symlink[n].data);
}
{Opt_err, NULL}
};
-static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid, pid_t *pgrp, int *minproto, int *maxproto)
+static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
+ pid_t *pgrp, int *minproto, int *maxproto)
{
char *p;
substring_t args[MAX_OPT_ARGS];
int pipefd;
struct autofs_sb_info *sbi;
int minproto, maxproto;
+ pid_t pgid;
sbi = kzalloc(sizeof(*sbi), GFP_KERNEL);
- if ( !sbi )
+ if (!sbi)
goto fail_unlock;
DPRINTK(("autofs: starting up, sbi = %p\n",sbi));
sbi->pipe = NULL;
sbi->catatonic = 1;
sbi->exp_timeout = 0;
- sbi->oz_pgrp = process_group(current);
autofs_initialize_hash(&sbi->dirhash);
sbi->queues = NULL;
memset(sbi->symlink_bitmap, 0, sizeof(long)*AUTOFS_SYMLINK_BITMAP_LEN);
goto fail_iput;
/* Can this call block? - WTF cares? s is locked. */
- if ( parse_options(data,&pipefd,&root_inode->i_uid,&root_inode->i_gid,&sbi->oz_pgrp,&minproto,&maxproto) ) {
+ if (parse_options(data, &pipefd, &root_inode->i_uid,
+ &root_inode->i_gid, &pgid, &minproto,
+ &maxproto)) {
printk("autofs: called with bogus options\n");
goto fail_dput;
}
/* Couldn't this be tested earlier? */
- if ( minproto > AUTOFS_PROTO_VERSION ||
- maxproto < AUTOFS_PROTO_VERSION ) {
+ if (minproto > AUTOFS_PROTO_VERSION ||
+ maxproto < AUTOFS_PROTO_VERSION) {
printk("autofs: kernel does not match daemon version\n");
goto fail_dput;
}
- DPRINTK(("autofs: pipe fd = %d, pgrp = %u\n", pipefd, sbi->oz_pgrp));
+ DPRINTK(("autofs: pipe fd = %d, pgrp = %u\n", pipefd, pgid));
+ sbi->oz_pgrp = find_get_pid(pgid);
+
+ if (!sbi->oz_pgrp) {
+ printk("autofs: could not find process group %d\n", pgid);
+ goto fail_dput;
+ }
+
pipe = fget(pipefd);
- if ( !pipe ) {
+ if (!pipe) {
printk("autofs: could not open pipe file descriptor\n");
- goto fail_dput;
+ goto fail_put_pid;
}
- if ( !pipe->f_op || !pipe->f_op->write )
+
+ if (!pipe->f_op || !pipe->f_op->write)
goto fail_fput;
sbi->pipe = pipe;
sbi->catatonic = 0;
fail_fput:
printk("autofs: pipe file descriptor does not contain proper ops\n");
fput(pipe);
+fail_put_pid:
+ put_pid(sbi->oz_pgrp);
fail_dput:
dput(root);
goto fail_free;
inode->i_mtime = inode->i_atime = inode->i_ctime = CURRENT_TIME;
inode->i_blocks = 0;
- if ( ino == AUTOFS_ROOT_INO ) {
+ if (ino == AUTOFS_ROOT_INO) {
inode->i_mode = S_IFDIR | S_IRUGO | S_IXUGO | S_IWUSR;
inode->i_op = &autofs_root_inode_operations;
inode->i_fop = &autofs_root_operations;
inode->i_uid = inode->i_sb->s_root->d_inode->i_uid;
inode->i_gid = inode->i_sb->s_root->d_inode->i_gid;
- if ( ino >= AUTOFS_FIRST_SYMLINK && ino < AUTOFS_FIRST_DIR_INO ) {
+ if (ino >= AUTOFS_FIRST_SYMLINK && ino < AUTOFS_FIRST_DIR_INO) {
/* Symlink inode - should be in symlink list */
struct autofs_symlink *sl;
n = ino - AUTOFS_FIRST_SYMLINK;
- if ( n >= AUTOFS_MAX_SYMLINKS || !test_bit(n,sbi->symlink_bitmap)) {
+ if (n >= AUTOFS_MAX_SYMLINKS || !test_bit(n,sbi->symlink_bitmap)) {
printk("autofs: Looking for bad symlink inode %u\n", (unsigned int) ino);
return;
}
filp->f_pos = ++nr;
/* fall through */
default:
- while ( onr = nr, ent = autofs_hash_enum(dirhash,&nr,ent) ) {
- if ( !ent->dentry || d_mountpoint(ent->dentry) ) {
+ while (onr = nr, ent = autofs_hash_enum(dirhash,&nr,ent)) {
+ if (!ent->dentry || d_mountpoint(ent->dentry)) {
if (filldir(dirent,ent->name,ent->len,onr,ent->ino,DT_UNKNOWN) < 0)
goto out;
filp->f_pos = nr;
struct autofs_dir_ent *ent;
int status = 0;
- if ( !(ent = autofs_hash_lookup(&sbi->dirhash, &dentry->d_name)) ) {
+ if (!(ent = autofs_hash_lookup(&sbi->dirhash, &dentry->d_name))) {
do {
- if ( status && dentry->d_inode ) {
- if ( status != -ENOENT )
+ if (status && dentry->d_inode) {
+ if (status != -ENOENT)
printk("autofs warning: lookup failure on positive dentry, status = %d, name = %s\n", status, dentry->d_name.name);
return 0; /* Try to get the kernel to invalidate this dentry */
}
return 1;
}
status = autofs_wait(sbi, &dentry->d_name);
- } while (!(ent = autofs_hash_lookup(&sbi->dirhash, &dentry->d_name)) );
+ } while (!(ent = autofs_hash_lookup(&sbi->dirhash, &dentry->d_name)));
}
/* Abuse this field as a pointer to the directory entry, used to
/* If this is a directory that isn't a mount point, bitch at the
daemon and fix it in user space */
- if ( S_ISDIR(dentry->d_inode->i_mode) && !d_mountpoint(dentry) ) {
+ if (S_ISDIR(dentry->d_inode->i_mode) && !d_mountpoint(dentry)) {
return !autofs_wait(sbi, &dentry->d_name);
}
/* We don't update the usages for the autofs daemon itself, this
is necessary for recursive autofs mounts */
- if ( !autofs_oz_mode(sbi) ) {
+ if (!autofs_oz_mode(sbi)) {
autofs_update_usage(&sbi->dirhash,ent);
}
sbi = autofs_sbi(dir->i_sb);
/* Pending dentry */
- if ( dentry->d_flags & DCACHE_AUTOFS_PENDING ) {
+ if (dentry->d_flags & DCACHE_AUTOFS_PENDING) {
if (autofs_oz_mode(sbi))
res = 1;
else
}
/* Check for a non-mountpoint directory */
- if ( S_ISDIR(dentry->d_inode->i_mode) && !d_mountpoint(dentry) ) {
+ if (S_ISDIR(dentry->d_inode->i_mode) && !d_mountpoint(dentry)) {
if (autofs_oz_mode(sbi))
res = 1;
else
}
/* Update the usage list */
- if ( !autofs_oz_mode(sbi) ) {
+ if (!autofs_oz_mode(sbi)) {
ent = (struct autofs_dir_ent *) dentry->d_time;
- if ( ent )
+ if (ent)
autofs_update_usage(&sbi->dirhash,ent);
}
unlock_kernel();
sbi = autofs_sbi(dir->i_sb);
oz_mode = autofs_oz_mode(sbi);
- DPRINTK(("autofs_lookup: pid = %u, pgrp = %u, catatonic = %d, oz_mode = %d\n",
- current->pid, process_group(current), sbi->catatonic, oz_mode));
+ DPRINTK(("autofs_lookup: pid = %u, pgrp = %u, catatonic = %d, "
+ "oz_mode = %d\n", pid_nr(task_pid(current)),
+ process_group(current), sbi->catatonic,
+ oz_mode));
/*
* Mark the dentry incomplete, but add it. This is needed so
* doesn't do the right thing for all system calls, but it should
* be OK for the operations we permit from an autofs.
*/
- if ( dentry->d_inode && d_unhashed(dentry) )
+ if (dentry->d_inode && d_unhashed(dentry))
return ERR_PTR(-ENOENT);
return NULL;
autofs_say(dentry->d_name.name,dentry->d_name.len);
lock_kernel();
- if ( !autofs_oz_mode(sbi) ) {
+ if (!autofs_oz_mode(sbi)) {
unlock_kernel();
return -EACCES;
}
- if ( autofs_hash_lookup(dh, &dentry->d_name) ) {
+ if (autofs_hash_lookup(dh, &dentry->d_name)) {
unlock_kernel();
return -EEXIST;
}
n = find_first_zero_bit(sbi->symlink_bitmap,AUTOFS_MAX_SYMLINKS);
- if ( n >= AUTOFS_MAX_SYMLINKS ) {
+ if (n >= AUTOFS_MAX_SYMLINKS) {
unlock_kernel();
return -ENOSPC;
}
sl = &sbi->symlink[n];
sl->len = strlen(symname);
sl->data = kmalloc(slsize = sl->len+1, GFP_KERNEL);
- if ( !sl->data ) {
+ if (!sl->data) {
clear_bit(n,sbi->symlink_bitmap);
unlock_kernel();
return -ENOSPC;
}
ent = kmalloc(sizeof(struct autofs_dir_ent), GFP_KERNEL);
- if ( !ent ) {
+ if (!ent) {
kfree(sl->data);
clear_bit(n,sbi->symlink_bitmap);
unlock_kernel();
}
ent->name = kmalloc(dentry->d_name.len+1, GFP_KERNEL);
- if ( !ent->name ) {
+ if (!ent->name) {
kfree(sl->data);
kfree(ent);
clear_bit(n,sbi->symlink_bitmap);
/* This allows root to remove symlinks */
lock_kernel();
- if ( !autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN) ) {
+ if (!autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN)) {
unlock_kernel();
return -EACCES;
}
ent = autofs_hash_lookup(dh, &dentry->d_name);
- if ( !ent ) {
+ if (!ent) {
unlock_kernel();
return -ENOENT;
}
n = ent->ino - AUTOFS_FIRST_SYMLINK;
- if ( n >= AUTOFS_MAX_SYMLINKS ) {
+ if (n >= AUTOFS_MAX_SYMLINKS) {
unlock_kernel();
return -EISDIR; /* It's a directory, dummy */
}
- if ( !test_bit(n,sbi->symlink_bitmap) ) {
+ if (!test_bit(n,sbi->symlink_bitmap)) {
unlock_kernel();
return -EINVAL; /* Nonexistent symlink? Shouldn't happen */
}
struct autofs_dir_ent *ent;
lock_kernel();
- if ( !autofs_oz_mode(sbi) ) {
+ if (!autofs_oz_mode(sbi)) {
unlock_kernel();
return -EACCES;
}
ent = autofs_hash_lookup(dh, &dentry->d_name);
- if ( !ent ) {
+ if (!ent) {
unlock_kernel();
return -ENOENT;
}
- if ( (unsigned int)ent->ino < AUTOFS_FIRST_DIR_INO ) {
+ if ((unsigned int)ent->ino < AUTOFS_FIRST_DIR_INO) {
unlock_kernel();
return -ENOTDIR; /* Not a directory */
}
- if ( ent->dentry != dentry ) {
+ if (ent->dentry != dentry) {
printk("autofs_rmdir: odentry != dentry for entry %s\n", dentry->d_name.name);
}
ino_t ino;
lock_kernel();
- if ( !autofs_oz_mode(sbi) ) {
+ if (!autofs_oz_mode(sbi)) {
unlock_kernel();
return -EACCES;
}
ent = autofs_hash_lookup(dh, &dentry->d_name);
- if ( ent ) {
+ if (ent) {
unlock_kernel();
return -EEXIST;
}
- if ( sbi->next_dir_ino < AUTOFS_FIRST_DIR_INO ) {
+ if (sbi->next_dir_ino < AUTOFS_FIRST_DIR_INO) {
printk("autofs: Out of inode numbers -- what the heck did you do??\n");
unlock_kernel();
return -ENOSPC;
ino = sbi->next_dir_ino++;
ent = kmalloc(sizeof(struct autofs_dir_ent), GFP_KERNEL);
- if ( !ent ) {
+ if (!ent) {
unlock_kernel();
return -ENOSPC;
}
ent->name = kmalloc(dentry->d_name.len+1, GFP_KERNEL);
- if ( !ent->name ) {
+ if (!ent->name) {
kfree(ent);
unlock_kernel();
return -ENOSPC;
put_user(sbi->exp_timeout / HZ, p))
return -EFAULT;
- if ( ntimeout > ULONG_MAX/HZ )
+ if (ntimeout > ULONG_MAX/HZ)
sbi->exp_timeout = 0;
else
sbi->exp_timeout = ntimeout * HZ;
pkt.hdr.proto_version = AUTOFS_PROTO_VERSION;
pkt.hdr.type = autofs_ptype_expire;
- if ( !sbi->exp_timeout ||
- !(ent = autofs_expire(sb,sbi,mnt)) )
+ if (!sbi->exp_timeout || !(ent = autofs_expire(sb,sbi,mnt)))
return -EAGAIN;
pkt.len = ent->len;
memcpy(pkt.name, ent->name, pkt.len);
pkt.name[pkt.len] = '\0';
- if ( copy_to_user(pkt_p, &pkt, sizeof(struct autofs_packet_expire)) )
+ if (copy_to_user(pkt_p, &pkt, sizeof(struct autofs_packet_expire)))
return -EFAULT;
return 0;
DPRINTK(("autofs_ioctl: cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u\n",cmd,arg,sbi,process_group(current)));
- if ( _IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
- _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT )
+ if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
+ _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)
return -ENOTTY;
- if ( !autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN) )
+ if (!autofs_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
return -EPERM;
switch(cmd) {
};
static int parse_options(char *options, int *pipefd, uid_t *uid, gid_t *gid,
- pid_t *pgrp, unsigned int *type,
- int *minproto, int *maxproto)
+ pid_t *pgrp, unsigned int *type, int *minproto, int *maxproto)
{
char *p;
substring_t args[MAX_OPT_ARGS];
struct autofs_info *ino;
sbi = kmalloc(sizeof(*sbi), GFP_KERNEL);
- if ( !sbi )
+ if (!sbi)
goto fail_unlock;
DPRINTK("starting up, sbi = %p",sbi);
root->d_fsdata = ino;
/* Can this call block? */
- if (parse_options(data, &pipefd,
- &root_inode->i_uid, &root_inode->i_gid,
- &sbi->oz_pgrp, &sbi->type,
- &sbi->min_proto, &sbi->max_proto)) {
+ if (parse_options(data, &pipefd, &root_inode->i_uid, &root_inode->i_gid,
+ &sbi->oz_pgrp, &sbi->type, &sbi->min_proto,
+ &sbi->max_proto)) {
printk("autofs: called with bogus options\n");
goto fail_dput;
}
DPRINTK("pipe fd = %d, pgrp = %u", pipefd, sbi->oz_pgrp);
pipe = fget(pipefd);
- if ( !pipe ) {
+ if (!pipe) {
printk("autofs: could not open pipe file descriptor\n");
goto fail_dput;
}
- if ( !pipe->f_op || !pipe->f_op->write )
+ if (!pipe->f_op || !pipe->f_op->write)
goto fail_fput;
sbi->pipe = pipe;
sbi->pipefd = pipefd;
struct autofs_info *p_ino;
/* This allows root to remove symlinks */
- if ( !autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN) )
+ if (!autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
return -EACCES;
if (atomic_dec_and_test(&ino->count)) {
struct autofs_info *p_ino;
struct inode *inode;
- if ( !autofs4_oz_mode(sbi) )
+ if (!autofs4_oz_mode(sbi))
return -EACCES;
DPRINTK("dentry %p, creating %.*s",
int rv;
unsigned long ntimeout;
- if ( (rv = get_user(ntimeout, p)) ||
- (rv = put_user(sbi->exp_timeout/HZ, p)) )
+ if ((rv = get_user(ntimeout, p)) ||
+ (rv = put_user(sbi->exp_timeout/HZ, p)))
return rv;
- if ( ntimeout > ULONG_MAX/HZ )
+ if (ntimeout > ULONG_MAX/HZ)
sbi->exp_timeout = 0;
else
sbi->exp_timeout = ntimeout * HZ;
DPRINTK("returning %d", sbi->needs_reghost);
status = put_user(sbi->needs_reghost, p);
- if ( status )
+ if (status)
return status;
sbi->needs_reghost = 0;
DPRINTK("cmd = 0x%08x, arg = 0x%08lx, sbi = %p, pgrp = %u",
cmd,arg,sbi,process_group(current));
- if ( _IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
- _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT )
+ if (_IOC_TYPE(cmd) != _IOC_TYPE(AUTOFS_IOC_FIRST) ||
+ _IOC_NR(cmd) - _IOC_NR(AUTOFS_IOC_FIRST) >= AUTOFS_IOC_COUNT)
return -ENOTTY;
- if ( !autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN) )
+ if (!autofs4_oz_mode(sbi) && !capable(CAP_SYS_ADMIN))
return -EPERM;
switch(cmd) {
#include <linux/tsacct_kern.h>
#include <linux/security.h>
#include <linux/highmem.h>
+#include <linux/signal.h>
#include <linux/poll.h>
#include <linux/mm.h>
#include <linux/eventpoll.h>
#endif /* TIF_RESTORE_SIGMASK */
#endif /* CONFIG_EPOLL */
+
+#ifdef CONFIG_SIGNALFD
+
+asmlinkage long compat_sys_signalfd(int ufd,
+ const compat_sigset_t __user *sigmask,
+ compat_size_t sigsetsize)
+{
+ compat_sigset_t ss32;
+ sigset_t tmp;
+ sigset_t __user *ksigmask;
+
+ if (sigsetsize != sizeof(compat_sigset_t))
+ return -EINVAL;
+ if (copy_from_user(&ss32, sigmask, sizeof(ss32)))
+ return -EFAULT;
+ sigset_from_compat(&tmp, &ss32);
+ ksigmask = compat_alloc_user_space(sizeof(sigset_t));
+ if (copy_to_user(ksigmask, &tmp, sizeof(sigset_t)))
+ return -EFAULT;
+
+ return sys_signalfd(ufd, ksigmask, sizeof(sigset_t));
+}
+
+#endif /* CONFIG_SIGNALFD */
+
+#ifdef CONFIG_TIMERFD
+
+asmlinkage long compat_sys_timerfd(int ufd, int clockid, int flags,
+ const struct compat_itimerspec __user *utmr)
+{
+ long res;
+ struct itimerspec t;
+ struct itimerspec __user *ut;
+
+ res = -EFAULT;
+ if (get_compat_itimerspec(&t, utmr))
+ goto err_exit;
+ ut = compat_alloc_user_space(sizeof(*ut));
+ if (copy_to_user(ut, &t, sizeof(t)) )
+ goto err_exit;
+
+ res = sys_timerfd(ufd, clockid, flags, ut);
+err_exit:
+ return res;
+}
+
+#endif /* CONFIG_TIMERFD */
+
--- /dev/null
+/*
+ * fs/eventfd.c
+ *
+ * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#include <linux/file.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/anon_inodes.h>
+#include <linux/eventfd.h>
+
+struct eventfd_ctx {
+ spinlock_t lock;
+ wait_queue_head_t wqh;
+ /*
+ * Every time that a write(2) is performed on an eventfd, the
+ * value of the __u64 being written is added to "count" and a
+ * wakeup is performed on "wqh". A read(2) will return the "count"
+ * value to userspace, and will reset "count" to zero. The kernel
+ * size eventfd_signal() also, adds to the "count" counter and
+ * issue a wakeup.
+ */
+ __u64 count;
+};
+
+/*
+ * Adds "n" to the eventfd counter "count". Returns "n" in case of
+ * success, or a value lower then "n" in case of coutner overflow.
+ * This function is supposed to be called by the kernel in paths
+ * that do not allow sleeping. In this function we allow the counter
+ * to reach the ULLONG_MAX value, and we signal this as overflow
+ * condition by returining a POLLERR to poll(2).
+ */
+int eventfd_signal(struct file *file, int n)
+{
+ struct eventfd_ctx *ctx = file->private_data;
+ unsigned long flags;
+
+ if (n < 0)
+ return -EINVAL;
+ spin_lock_irqsave(&ctx->lock, flags);
+ if (ULLONG_MAX - ctx->count < n)
+ n = (int) (ULLONG_MAX - ctx->count);
+ ctx->count += n;
+ if (waitqueue_active(&ctx->wqh))
+ wake_up_locked(&ctx->wqh);
+ spin_unlock_irqrestore(&ctx->lock, flags);
+
+ return n;
+}
+
+static int eventfd_release(struct inode *inode, struct file *file)
+{
+ kfree(file->private_data);
+ return 0;
+}
+
+static unsigned int eventfd_poll(struct file *file, poll_table *wait)
+{
+ struct eventfd_ctx *ctx = file->private_data;
+ unsigned int events = 0;
+ unsigned long flags;
+
+ poll_wait(file, &ctx->wqh, wait);
+
+ spin_lock_irqsave(&ctx->lock, flags);
+ if (ctx->count > 0)
+ events |= POLLIN;
+ if (ctx->count == ULLONG_MAX)
+ events |= POLLERR;
+ if (ULLONG_MAX - 1 > ctx->count)
+ events |= POLLOUT;
+ spin_unlock_irqrestore(&ctx->lock, flags);
+
+ return events;
+}
+
+static ssize_t eventfd_read(struct file *file, char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ struct eventfd_ctx *ctx = file->private_data;
+ ssize_t res;
+ __u64 ucnt;
+ DECLARE_WAITQUEUE(wait, current);
+
+ if (count < sizeof(ucnt))
+ return -EINVAL;
+ spin_lock_irq(&ctx->lock);
+ res = -EAGAIN;
+ ucnt = ctx->count;
+ if (ucnt > 0)
+ res = sizeof(ucnt);
+ else if (!(file->f_flags & O_NONBLOCK)) {
+ __add_wait_queue(&ctx->wqh, &wait);
+ for (res = 0;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (ctx->count > 0) {
+ ucnt = ctx->count;
+ res = sizeof(ucnt);
+ break;
+ }
+ if (signal_pending(current)) {
+ res = -ERESTARTSYS;
+ break;
+ }
+ spin_unlock_irq(&ctx->lock);
+ schedule();
+ spin_lock_irq(&ctx->lock);
+ }
+ __remove_wait_queue(&ctx->wqh, &wait);
+ __set_current_state(TASK_RUNNING);
+ }
+ if (res > 0) {
+ ctx->count = 0;
+ if (waitqueue_active(&ctx->wqh))
+ wake_up_locked(&ctx->wqh);
+ }
+ spin_unlock_irq(&ctx->lock);
+ if (res > 0 && put_user(ucnt, (__u64 __user *) buf))
+ return -EFAULT;
+
+ return res;
+}
+
+static ssize_t eventfd_write(struct file *file, const char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ struct eventfd_ctx *ctx = file->private_data;
+ ssize_t res;
+ __u64 ucnt;
+ DECLARE_WAITQUEUE(wait, current);
+
+ if (count < sizeof(ucnt))
+ return -EINVAL;
+ if (copy_from_user(&ucnt, buf, sizeof(ucnt)))
+ return -EFAULT;
+ if (ucnt == ULLONG_MAX)
+ return -EINVAL;
+ spin_lock_irq(&ctx->lock);
+ res = -EAGAIN;
+ if (ULLONG_MAX - ctx->count > ucnt)
+ res = sizeof(ucnt);
+ else if (!(file->f_flags & O_NONBLOCK)) {
+ __add_wait_queue(&ctx->wqh, &wait);
+ for (res = 0;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (ULLONG_MAX - ctx->count > ucnt) {
+ res = sizeof(ucnt);
+ break;
+ }
+ if (signal_pending(current)) {
+ res = -ERESTARTSYS;
+ break;
+ }
+ spin_unlock_irq(&ctx->lock);
+ schedule();
+ spin_lock_irq(&ctx->lock);
+ }
+ __remove_wait_queue(&ctx->wqh, &wait);
+ __set_current_state(TASK_RUNNING);
+ }
+ if (res > 0) {
+ ctx->count += ucnt;
+ if (waitqueue_active(&ctx->wqh))
+ wake_up_locked(&ctx->wqh);
+ }
+ spin_unlock_irq(&ctx->lock);
+
+ return res;
+}
+
+static const struct file_operations eventfd_fops = {
+ .release = eventfd_release,
+ .poll = eventfd_poll,
+ .read = eventfd_read,
+ .write = eventfd_write,
+};
+
+struct file *eventfd_fget(int fd)
+{
+ struct file *file;
+
+ file = fget(fd);
+ if (!file)
+ return ERR_PTR(-EBADF);
+ if (file->f_op != &eventfd_fops) {
+ fput(file);
+ return ERR_PTR(-EINVAL);
+ }
+
+ return file;
+}
+
+asmlinkage long sys_eventfd(unsigned int count)
+{
+ int error, fd;
+ struct eventfd_ctx *ctx;
+ struct file *file;
+ struct inode *inode;
+
+ ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ init_waitqueue_head(&ctx->wqh);
+ spin_lock_init(&ctx->lock);
+ ctx->count = count;
+
+ /*
+ * When we call this, the initialization must be complete, since
+ * anon_inode_getfd() will install the fd.
+ */
+ error = anon_inode_getfd(&fd, &inode, &file, "[eventfd]",
+ &eventfd_fops, ctx);
+ if (!error)
+ return fd;
+
+ kfree(ctx);
+ return error;
+}
+
*
*/
-#include <linux/module.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/mount.h>
#include <linux/bitops.h>
#include <linux/mutex.h>
+#include <linux/anon_inodes.h>
#include <asm/uaccess.h>
#include <asm/system.h>
#include <asm/io.h>
#include <asm/atomic.h>
#include <asm/semaphore.h>
-
/*
* LOCKING:
* There are three level of locking required by epoll :
* a greater scalability.
*/
-
-#define EVENTPOLLFS_MAGIC 0x03111965 /* My birthday should work for this :) */
-
#define DEBUG_EPOLL 0
#if DEBUG_EPOLL > 0
#define EP_MAX_EVENTS (INT_MAX / sizeof(struct epoll_event))
-
struct epoll_filefd {
struct file *file;
int fd;
struct epitem *epi;
};
-
-
-static void ep_poll_safewake_init(struct poll_safewake *psw);
-static void ep_poll_safewake(struct poll_safewake *psw, wait_queue_head_t *wq);
-static int ep_getfd(int *efd, struct inode **einode, struct file **efile,
- struct eventpoll *ep);
-static int ep_alloc(struct eventpoll **pep);
-static void ep_free(struct eventpoll *ep);
-static struct epitem *ep_find(struct eventpoll *ep, struct file *file, int fd);
-static void ep_use_epitem(struct epitem *epi);
-static void ep_release_epitem(struct epitem *epi);
-static void ep_ptable_queue_proc(struct file *file, wait_queue_head_t *whead,
- poll_table *pt);
-static void ep_rbtree_insert(struct eventpoll *ep, struct epitem *epi);
-static int ep_insert(struct eventpoll *ep, struct epoll_event *event,
- struct file *tfile, int fd);
-static int ep_modify(struct eventpoll *ep, struct epitem *epi,
- struct epoll_event *event);
-static void ep_unregister_pollwait(struct eventpoll *ep, struct epitem *epi);
-static int ep_unlink(struct eventpoll *ep, struct epitem *epi);
-static int ep_remove(struct eventpoll *ep, struct epitem *epi);
-static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *key);
-static int ep_eventpoll_close(struct inode *inode, struct file *file);
-static unsigned int ep_eventpoll_poll(struct file *file, poll_table *wait);
-static int ep_send_events(struct eventpoll *ep, struct list_head *txlist,
- struct epoll_event __user *events, int maxevents);
-static int ep_events_transfer(struct eventpoll *ep,
- struct epoll_event __user *events,
- int maxevents);
-static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
- int maxevents, long timeout);
-static int eventpollfs_delete_dentry(struct dentry *dentry);
-static struct inode *ep_eventpoll_inode(void);
-static int eventpollfs_get_sb(struct file_system_type *fs_type,
- int flags, const char *dev_name,
- void *data, struct vfsmount *mnt);
-
/*
* This semaphore is used to serialize ep_free() and eventpoll_release_file().
*/
/* Slab cache used to allocate "struct eppoll_entry" */
static struct kmem_cache *pwq_cache __read_mostly;
-/* Virtual fs used to allocate inodes for eventpoll files */
-static struct vfsmount *eventpoll_mnt __read_mostly;
-
-/* File callbacks that implement the eventpoll file behaviour */
-static const struct file_operations eventpoll_fops = {
- .release = ep_eventpoll_close,
- .poll = ep_eventpoll_poll
-};
-
-/*
- * This is used to register the virtual file system from where
- * eventpoll inodes are allocated.
- */
-static struct file_system_type eventpoll_fs_type = {
- .name = "eventpollfs",
- .get_sb = eventpollfs_get_sb,
- .kill_sb = kill_anon_super,
-};
-
-/* Very basic directory entry operations for the eventpoll virtual file system */
-static struct dentry_operations eventpollfs_dentry_operations = {
- .d_delete = eventpollfs_delete_dentry,
-};
-
-
-
-/* Fast test to see if the file is an evenpoll file */
-static inline int is_file_epoll(struct file *f)
-{
- return f->f_op == &eventpoll_fops;
-}
/* Setup the structure that is used as key for the rb-tree */
static inline void ep_set_ffd(struct epoll_filefd *ffd,
spin_lock_init(&psw->lock);
}
-
/*
* Perform a safe wake up of the poll wait list. The problem is that
* with the new callback'd wake up system, it is possible that the
spin_unlock_irqrestore(&psw->lock, flags);
}
-
/*
- * This is called from eventpoll_release() to unlink files from the eventpoll
- * interface. We need to have this facility to cleanup correctly files that are
- * closed without being removed from the eventpoll interface.
+ * This function unregister poll callbacks from the associated file descriptor.
+ * Since this must be called without holding "ep->lock" the atomic exchange trick
+ * will protect us from multiple unregister.
*/
-void eventpoll_release_file(struct file *file)
+static void ep_unregister_pollwait(struct eventpoll *ep, struct epitem *epi)
{
- struct list_head *lsthead = &file->f_ep_links;
- struct eventpoll *ep;
- struct epitem *epi;
+ int nwait;
+ struct list_head *lsthead = &epi->pwqlist;
+ struct eppoll_entry *pwq;
- /*
- * We don't want to get "file->f_ep_lock" because it is not
- * necessary. It is not necessary because we're in the "struct file"
- * cleanup path, and this means that noone is using this file anymore.
- * The only hit might come from ep_free() but by holding the semaphore
- * will correctly serialize the operation. We do need to acquire
- * "ep->sem" after "epmutex" because ep_remove() requires it when called
- * from anywhere but ep_free().
- */
- mutex_lock(&epmutex);
+ /* This is called without locks, so we need the atomic exchange */
+ nwait = xchg(&epi->nwait, 0);
- while (!list_empty(lsthead)) {
- epi = list_first_entry(lsthead, struct epitem, fllink);
+ if (nwait) {
+ while (!list_empty(lsthead)) {
+ pwq = list_first_entry(lsthead, struct eppoll_entry, llink);
- ep = epi->ep;
- list_del_init(&epi->fllink);
- down_write(&ep->sem);
- ep_remove(ep, epi);
- up_write(&ep->sem);
+ list_del_init(&pwq->llink);
+ remove_wait_queue(pwq->whead, &pwq->wait);
+ kmem_cache_free(pwq_cache, pwq);
+ }
}
-
- mutex_unlock(&epmutex);
}
-
/*
- * It opens an eventpoll file descriptor by suggesting a storage of "size"
- * file descriptors. The size parameter is just an hint about how to size
- * data structures. It won't prevent the user to store more than "size"
- * file descriptors inside the epoll interface. It is the kernel part of
- * the userspace epoll_create(2).
+ * Unlink the "struct epitem" from all places it might have been hooked up.
+ * This function must be called with write IRQ lock on "ep->lock".
*/
-asmlinkage long sys_epoll_create(int size)
+static int ep_unlink(struct eventpoll *ep, struct epitem *epi)
{
- int error, fd = -1;
- struct eventpoll *ep;
- struct inode *inode;
- struct file *file;
+ int error;
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d)\n",
- current, size));
+ /*
+ * It can happen that this one is called for an item already unlinked.
+ * The check protect us from doing a double unlink ( crash ).
+ */
+ error = -ENOENT;
+ if (!ep_rb_linked(&epi->rbn))
+ goto error_return;
/*
- * Sanity check on the size parameter, and create the internal data
- * structure ( "struct eventpoll" ).
+ * Clear the event mask for the unlinked item. This will avoid item
+ * notifications to be sent after the unlink operation from inside
+ * the kernel->userspace event transfer loop.
*/
- error = -EINVAL;
- if (size <= 0 || (error = ep_alloc(&ep)) != 0)
- goto eexit_1;
+ epi->event.events = 0;
/*
- * Creates all the items needed to setup an eventpoll file. That is,
- * a file structure, and inode and a free file descriptor.
+ * At this point is safe to do the job, unlink the item from our rb-tree.
+ * This operation togheter with the above check closes the door to
+ * double unlinks.
*/
- error = ep_getfd(&fd, &inode, &file, ep);
- if (error)
- goto eexit_2;
+ ep_rb_erase(&epi->rbn, &ep->rbr);
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d) = %d\n",
- current, size, fd));
+ /*
+ * If the item we are going to remove is inside the ready file descriptors
+ * we want to remove it from this list to avoid stale events.
+ */
+ if (ep_is_linked(&epi->rdllink))
+ list_del_init(&epi->rdllink);
- return fd;
+ error = 0;
+error_return:
+
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_unlink(%p, %p) = %d\n",
+ current, ep, epi->ffd.file, error));
-eexit_2:
- ep_free(ep);
- kfree(ep);
-eexit_1:
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d) = %d\n",
- current, size, error));
return error;
}
-
/*
- * The following function implements the controller interface for
- * the eventpoll file that enables the insertion/removal/change of
- * file descriptors inside the interest set. It represents
- * the kernel part of the user space epoll_ctl(2).
+ * Increment the usage count of the "struct epitem" making it sure
+ * that the user will have a valid pointer to reference.
*/
-asmlinkage long
-sys_epoll_ctl(int epfd, int op, int fd, struct epoll_event __user *event)
+static void ep_use_epitem(struct epitem *epi)
{
- int error;
- struct file *file, *tfile;
- struct eventpoll *ep;
- struct epitem *epi;
- struct epoll_event epds;
-
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_ctl(%d, %d, %d, %p)\n",
- current, epfd, op, fd, event));
-
- error = -EFAULT;
- if (ep_op_has_event(op) &&
- copy_from_user(&epds, event, sizeof(struct epoll_event)))
- goto eexit_1;
-
- /* Get the "struct file *" for the eventpoll file */
- error = -EBADF;
- file = fget(epfd);
- if (!file)
- goto eexit_1;
-
- /* Get the "struct file *" for the target file */
- tfile = fget(fd);
- if (!tfile)
- goto eexit_2;
+ atomic_inc(&epi->usecnt);
+}
- /* The target file descriptor must support poll */
- error = -EPERM;
- if (!tfile->f_op || !tfile->f_op->poll)
- goto eexit_3;
+/*
+ * Decrement ( release ) the usage count by signaling that the user
+ * has finished using the structure. It might lead to freeing the
+ * structure itself if the count goes to zero.
+ */
+static void ep_release_epitem(struct epitem *epi)
+{
+ if (atomic_dec_and_test(&epi->usecnt))
+ kmem_cache_free(epi_cache, epi);
+}
- /*
- * We have to check that the file structure underneath the file descriptor
- * the user passed to us _is_ an eventpoll file. And also we do not permit
- * adding an epoll file descriptor inside itself.
- */
- error = -EINVAL;
- if (file == tfile || !is_file_epoll(file))
- goto eexit_3;
+/*
+ * Removes a "struct epitem" from the eventpoll RB tree and deallocates
+ * all the associated resources.
+ */
+static int ep_remove(struct eventpoll *ep, struct epitem *epi)
+{
+ int error;
+ unsigned long flags;
+ struct file *file = epi->ffd.file;
/*
- * At this point it is safe to assume that the "private_data" contains
- * our own data structure.
+ * Removes poll wait queue hooks. We _have_ to do this without holding
+ * the "ep->lock" otherwise a deadlock might occur. This because of the
+ * sequence of the lock acquisition. Here we do "ep->lock" then the wait
+ * queue head lock when unregistering the wait queue. The wakeup callback
+ * will run by holding the wait queue head lock and will call our callback
+ * that will try to get "ep->lock".
*/
- ep = file->private_data;
+ ep_unregister_pollwait(ep, epi);
- down_write(&ep->sem);
+ /* Remove the current item from the list of epoll hooks */
+ spin_lock(&file->f_ep_lock);
+ if (ep_is_linked(&epi->fllink))
+ list_del_init(&epi->fllink);
+ spin_unlock(&file->f_ep_lock);
- /* Try to lookup the file inside our RB tree */
- epi = ep_find(ep, tfile, fd);
+ /* We need to acquire the write IRQ lock before calling ep_unlink() */
+ write_lock_irqsave(&ep->lock, flags);
- error = -EINVAL;
- switch (op) {
- case EPOLL_CTL_ADD:
- if (!epi) {
- epds.events |= POLLERR | POLLHUP;
+ /* Really unlink the item from the RB tree */
+ error = ep_unlink(ep, epi);
- error = ep_insert(ep, &epds, tfile, fd);
- } else
- error = -EEXIST;
- break;
- case EPOLL_CTL_DEL:
- if (epi)
- error = ep_remove(ep, epi);
- else
- error = -ENOENT;
- break;
- case EPOLL_CTL_MOD:
- if (epi) {
- epds.events |= POLLERR | POLLHUP;
- error = ep_modify(ep, epi, &epds);
- } else
- error = -ENOENT;
- break;
- }
+ write_unlock_irqrestore(&ep->lock, flags);
- /*
- * The function ep_find() increments the usage count of the structure
- * so, if this is not NULL, we need to release it.
- */
- if (epi)
- ep_release_epitem(epi);
+ if (error)
+ goto error_return;
- up_write(&ep->sem);
+ /* At this point it is safe to free the eventpoll item */
+ ep_release_epitem(epi);
-eexit_3:
- fput(tfile);
-eexit_2:
- fput(file);
-eexit_1:
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_ctl(%d, %d, %d, %p) = %d\n",
- current, epfd, op, fd, event, error));
+ error = 0;
+error_return:
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_remove(%p, %p) = %d\n",
+ current, ep, file, error));
return error;
}
-
-/*
- * Implement the event wait interface for the eventpoll file. It is the kernel
- * part of the user space epoll_wait(2).
- */
-asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
- int maxevents, int timeout)
+static void ep_free(struct eventpoll *ep)
{
- int error;
- struct file *file;
- struct eventpoll *ep;
-
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_wait(%d, %p, %d, %d)\n",
- current, epfd, events, maxevents, timeout));
-
- /* The maximum number of event must be greater than zero */
- if (maxevents <= 0 || maxevents > EP_MAX_EVENTS)
- return -EINVAL;
-
- /* Verify that the area passed by the user is writeable */
- if (!access_ok(VERIFY_WRITE, events, maxevents * sizeof(struct epoll_event))) {
- error = -EFAULT;
- goto eexit_1;
- }
+ struct rb_node *rbp;
+ struct epitem *epi;
- /* Get the "struct file *" for the eventpoll file */
- error = -EBADF;
- file = fget(epfd);
- if (!file)
- goto eexit_1;
+ /* We need to release all tasks waiting for these file */
+ if (waitqueue_active(&ep->poll_wait))
+ ep_poll_safewake(&psw, &ep->poll_wait);
/*
- * We have to check that the file structure underneath the fd
- * the user passed to us _is_ an eventpoll file.
+ * We need to lock this because we could be hit by
+ * eventpoll_release_file() while we're freeing the "struct eventpoll".
+ * We do not need to hold "ep->sem" here because the epoll file
+ * is on the way to be removed and no one has references to it
+ * anymore. The only hit might come from eventpoll_release_file() but
+ * holding "epmutex" is sufficent here.
*/
- error = -EINVAL;
- if (!is_file_epoll(file))
- goto eexit_2;
+ mutex_lock(&epmutex);
/*
- * At this point it is safe to assume that the "private_data" contains
- * our own data structure.
+ * Walks through the whole tree by unregistering poll callbacks.
*/
- ep = file->private_data;
+ for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) {
+ epi = rb_entry(rbp, struct epitem, rbn);
- /* Time to fish for events ... */
- error = ep_poll(ep, events, maxevents, timeout);
+ ep_unregister_pollwait(ep, epi);
+ }
-eexit_2:
- fput(file);
-eexit_1:
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_wait(%d, %p, %d, %d) = %d\n",
- current, epfd, events, maxevents, timeout, error));
+ /*
+ * Walks through the whole tree by freeing each "struct epitem". At this
+ * point we are sure no poll callbacks will be lingering around, and also by
+ * write-holding "sem" we can be sure that no file cleanup code will hit
+ * us during this operation. So we can avoid the lock on "ep->lock".
+ */
+ while ((rbp = rb_first(&ep->rbr)) != 0) {
+ epi = rb_entry(rbp, struct epitem, rbn);
+ ep_remove(ep, epi);
+ }
- return error;
+ mutex_unlock(&epmutex);
}
-
-#ifdef TIF_RESTORE_SIGMASK
-
-/*
- * Implement the event wait interface for the eventpoll file. It is the kernel
- * part of the user space epoll_pwait(2).
- */
-asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
- int maxevents, int timeout, const sigset_t __user *sigmask,
- size_t sigsetsize)
+static int ep_eventpoll_release(struct inode *inode, struct file *file)
{
- int error;
- sigset_t ksigmask, sigsaved;
+ struct eventpoll *ep = file->private_data;
- /*
- * If the caller wants a certain signal mask to be set during the wait,
- * we apply it here.
- */
- if (sigmask) {
- if (sigsetsize != sizeof(sigset_t))
- return -EINVAL;
- if (copy_from_user(&ksigmask, sigmask, sizeof(ksigmask)))
- return -EFAULT;
- sigdelsetmask(&ksigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
- sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
+ if (ep) {
+ ep_free(ep);
+ kfree(ep);
}
- error = sys_epoll_wait(epfd, events, maxevents, timeout);
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: close() ep=%p\n", current, ep));
+ return 0;
+}
- /*
- * If we changed the signal mask, we need to restore the original one.
- * In case we've got a signal while waiting, we do not restore the
- * signal mask yet, and we allow do_signal() to deliver the signal on
- * the way back to userspace, before the signal mask is restored.
- */
- if (sigmask) {
- if (error == -EINTR) {
- memcpy(¤t->saved_sigmask, &sigsaved,
- sizeof(sigsaved));
- set_thread_flag(TIF_RESTORE_SIGMASK);
- } else
- sigprocmask(SIG_SETMASK, &sigsaved, NULL);
- }
+static unsigned int ep_eventpoll_poll(struct file *file, poll_table *wait)
+{
+ unsigned int pollflags = 0;
+ unsigned long flags;
+ struct eventpoll *ep = file->private_data;
- return error;
+ /* Insert inside our poll wait queue */
+ poll_wait(file, &ep->poll_wait, wait);
+
+ /* Check our condition */
+ read_lock_irqsave(&ep->lock, flags);
+ if (!list_empty(&ep->rdllist))
+ pollflags = POLLIN | POLLRDNORM;
+ read_unlock_irqrestore(&ep->lock, flags);
+
+ return pollflags;
}
-#endif /* #ifdef TIF_RESTORE_SIGMASK */
+/* File callbacks that implement the eventpoll file behaviour */
+static const struct file_operations eventpoll_fops = {
+ .release = ep_eventpoll_release,
+ .poll = ep_eventpoll_poll
+};
+/* Fast test to see if the file is an evenpoll file */
+static inline int is_file_epoll(struct file *f)
+{
+ return f->f_op == &eventpoll_fops;
+}
/*
- * Creates the file descriptor to be used by the epoll interface.
+ * This is called from eventpoll_release() to unlink files from the eventpoll
+ * interface. We need to have this facility to cleanup correctly files that are
+ * closed without being removed from the eventpoll interface.
*/
-static int ep_getfd(int *efd, struct inode **einode, struct file **efile,
- struct eventpoll *ep)
+void eventpoll_release_file(struct file *file)
{
- struct qstr this;
- char name[32];
- struct dentry *dentry;
- struct inode *inode;
- struct file *file;
- int error, fd;
-
- /* Get an ready to use file */
- error = -ENFILE;
- file = get_empty_filp();
- if (!file)
- goto eexit_1;
-
- /* Allocates an inode from the eventpoll file system */
- inode = ep_eventpoll_inode();
- if (IS_ERR(inode)) {
- error = PTR_ERR(inode);
- goto eexit_2;
- }
-
- /* Allocates a free descriptor to plug the file onto */
- error = get_unused_fd();
- if (error < 0)
- goto eexit_3;
- fd = error;
+ struct list_head *lsthead = &file->f_ep_links;
+ struct eventpoll *ep;
+ struct epitem *epi;
/*
- * Link the inode to a directory entry by creating a unique name
- * using the inode number.
+ * We don't want to get "file->f_ep_lock" because it is not
+ * necessary. It is not necessary because we're in the "struct file"
+ * cleanup path, and this means that noone is using this file anymore.
+ * The only hit might come from ep_free() but by holding the semaphore
+ * will correctly serialize the operation. We do need to acquire
+ * "ep->sem" after "epmutex" because ep_remove() requires it when called
+ * from anywhere but ep_free().
*/
- error = -ENOMEM;
- sprintf(name, "[%lu]", inode->i_ino);
- this.name = name;
- this.len = strlen(name);
- this.hash = inode->i_ino;
- dentry = d_alloc(eventpoll_mnt->mnt_sb->s_root, &this);
- if (!dentry)
- goto eexit_4;
- dentry->d_op = &eventpollfs_dentry_operations;
- d_add(dentry, inode);
- file->f_path.mnt = mntget(eventpoll_mnt);
- file->f_path.dentry = dentry;
- file->f_mapping = inode->i_mapping;
-
- file->f_pos = 0;
- file->f_flags = O_RDONLY;
- file->f_op = &eventpoll_fops;
- file->f_mode = FMODE_READ;
- file->f_version = 0;
- file->private_data = ep;
-
- /* Install the new setup file into the allocated fd. */
- fd_install(fd, file);
-
- *efd = fd;
- *einode = inode;
- *efile = file;
- return 0;
+ mutex_lock(&epmutex);
-eexit_4:
- put_unused_fd(fd);
-eexit_3:
- iput(inode);
-eexit_2:
- put_filp(file);
-eexit_1:
- return error;
-}
+ while (!list_empty(lsthead)) {
+ epi = list_first_entry(lsthead, struct epitem, fllink);
+
+ ep = epi->ep;
+ list_del_init(&epi->fllink);
+ down_write(&ep->sem);
+ ep_remove(ep, epi);
+ up_write(&ep->sem);
+ }
+ mutex_unlock(&epmutex);
+}
static int ep_alloc(struct eventpoll **pep)
{
return 0;
}
-
-static void ep_free(struct eventpoll *ep)
-{
- struct rb_node *rbp;
- struct epitem *epi;
-
- /* We need to release all tasks waiting for these file */
- if (waitqueue_active(&ep->poll_wait))
- ep_poll_safewake(&psw, &ep->poll_wait);
-
- /*
- * We need to lock this because we could be hit by
- * eventpoll_release_file() while we're freeing the "struct eventpoll".
- * We do not need to hold "ep->sem" here because the epoll file
- * is on the way to be removed and no one has references to it
- * anymore. The only hit might come from eventpoll_release_file() but
- * holding "epmutex" is sufficent here.
- */
- mutex_lock(&epmutex);
-
- /*
- * Walks through the whole tree by unregistering poll callbacks.
- */
- for (rbp = rb_first(&ep->rbr); rbp; rbp = rb_next(rbp)) {
- epi = rb_entry(rbp, struct epitem, rbn);
-
- ep_unregister_pollwait(ep, epi);
- }
-
- /*
- * Walks through the whole tree by freeing each "struct epitem". At this
- * point we are sure no poll callbacks will be lingering around, and also by
- * write-holding "sem" we can be sure that no file cleanup code will hit
- * us during this operation. So we can avoid the lock on "ep->lock".
- */
- while ((rbp = rb_first(&ep->rbr)) != 0) {
- epi = rb_entry(rbp, struct epitem, rbn);
- ep_remove(ep, epi);
- }
-
- mutex_unlock(&epmutex);
-}
-
-
/*
* Search the file inside the eventpoll tree. It add usage count to
* the returned item, so the caller must call ep_release_epitem()
return epir;
}
-
/*
- * Increment the usage count of the "struct epitem" making it sure
- * that the user will have a valid pointer to reference.
+ * This is the callback that is passed to the wait queue wakeup
+ * machanism. It is called by the stored file descriptors when they
+ * have events to report.
*/
-static void ep_use_epitem(struct epitem *epi)
+static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *key)
{
+ int pwake = 0;
+ unsigned long flags;
+ struct epitem *epi = ep_item_from_wait(wait);
+ struct eventpoll *ep = epi->ep;
- atomic_inc(&epi->usecnt);
-}
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: poll_callback(%p) epi=%p ep=%p\n",
+ current, epi->ffd.file, epi, ep));
+ write_lock_irqsave(&ep->lock, flags);
-/*
- * Decrement ( release ) the usage count by signaling that the user
- * has finished using the structure. It might lead to freeing the
- * structure itself if the count goes to zero.
- */
-static void ep_release_epitem(struct epitem *epi)
-{
+ /*
+ * If the event mask does not contain any poll(2) event, we consider the
+ * descriptor to be disabled. This condition is likely the effect of the
+ * EPOLLONESHOT bit that disables the descriptor when an event is received,
+ * until the next EPOLL_CTL_MOD will be issued.
+ */
+ if (!(epi->event.events & ~EP_PRIVATE_BITS))
+ goto is_disabled;
- if (atomic_dec_and_test(&epi->usecnt))
- kmem_cache_free(epi_cache, epi);
-}
+ /* If this file is already in the ready list we exit soon */
+ if (ep_is_linked(&epi->rdllink))
+ goto is_linked;
+ list_add_tail(&epi->rdllink, &ep->rdllist);
+
+is_linked:
+ /*
+ * Wake up ( if active ) both the eventpoll wait list and the ->poll()
+ * wait list.
+ */
+ if (waitqueue_active(&ep->wq))
+ __wake_up_locked(&ep->wq, TASK_UNINTERRUPTIBLE |
+ TASK_INTERRUPTIBLE);
+ if (waitqueue_active(&ep->poll_wait))
+ pwake++;
+
+is_disabled:
+ write_unlock_irqrestore(&ep->lock, flags);
+
+ /* We have to call this outside the lock */
+ if (pwake)
+ ep_poll_safewake(&psw, &ep->poll_wait);
+
+ return 1;
+}
/*
* This is the callback that is used to add our wait queue to the
}
}
-
static void ep_rbtree_insert(struct eventpoll *ep, struct epitem *epi)
{
int kcmp;
rb_insert_color(&epi->rbn, &ep->rbr);
}
-
static int ep_insert(struct eventpoll *ep, struct epoll_event *event,
struct file *tfile, int fd)
{
error = -ENOMEM;
if (!(epi = kmem_cache_alloc(epi_cache, GFP_KERNEL)))
- goto eexit_1;
+ goto error_return;
/* Item initialization follow here ... */
ep_rb_initnode(&epi->rbn);
* high memory pressure.
*/
if (epi->nwait < 0)
- goto eexit_2;
+ goto error_unregister;
/* Add the current item to the list of active epoll hook for this file */
spin_lock(&tfile->f_ep_lock);
return 0;
-eexit_2:
+error_unregister:
ep_unregister_pollwait(ep, epi);
/*
write_unlock_irqrestore(&ep->lock, flags);
kmem_cache_free(epi_cache, epi);
-eexit_1:
+error_return:
return error;
}
-
/*
* Modify the interest event mask by dropping an event if the new mask
* has a match in the current file status.
}
}
- write_unlock_irqrestore(&ep->lock, flags);
-
- /* We have to call this outside the lock */
- if (pwake)
- ep_poll_safewake(&psw, &ep->poll_wait);
-
- return 0;
-}
-
-
-/*
- * This function unregister poll callbacks from the associated file descriptor.
- * Since this must be called without holding "ep->lock" the atomic exchange trick
- * will protect us from multiple unregister.
- */
-static void ep_unregister_pollwait(struct eventpoll *ep, struct epitem *epi)
-{
- int nwait;
- struct list_head *lsthead = &epi->pwqlist;
- struct eppoll_entry *pwq;
-
- /* This is called without locks, so we need the atomic exchange */
- nwait = xchg(&epi->nwait, 0);
-
- if (nwait) {
- while (!list_empty(lsthead)) {
- pwq = list_first_entry(lsthead, struct eppoll_entry, llink);
-
- list_del_init(&pwq->llink);
- remove_wait_queue(pwq->whead, &pwq->wait);
- kmem_cache_free(pwq_cache, pwq);
- }
- }
-}
-
-
-/*
- * Unlink the "struct epitem" from all places it might have been hooked up.
- * This function must be called with write IRQ lock on "ep->lock".
- */
-static int ep_unlink(struct eventpoll *ep, struct epitem *epi)
-{
- int error;
-
- /*
- * It can happen that this one is called for an item already unlinked.
- * The check protect us from doing a double unlink ( crash ).
- */
- error = -ENOENT;
- if (!ep_rb_linked(&epi->rbn))
- goto eexit_1;
-
- /*
- * Clear the event mask for the unlinked item. This will avoid item
- * notifications to be sent after the unlink operation from inside
- * the kernel->userspace event transfer loop.
- */
- epi->event.events = 0;
-
- /*
- * At this point is safe to do the job, unlink the item from our rb-tree.
- * This operation togheter with the above check closes the door to
- * double unlinks.
- */
- ep_rb_erase(&epi->rbn, &ep->rbr);
-
- /*
- * If the item we are going to remove is inside the ready file descriptors
- * we want to remove it from this list to avoid stale events.
- */
- if (ep_is_linked(&epi->rdllink))
- list_del_init(&epi->rdllink);
-
- error = 0;
-eexit_1:
-
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_unlink(%p, %p) = %d\n",
- current, ep, epi->ffd.file, error));
-
- return error;
-}
-
-
-/*
- * Removes a "struct epitem" from the eventpoll RB tree and deallocates
- * all the associated resources.
- */
-static int ep_remove(struct eventpoll *ep, struct epitem *epi)
-{
- int error;
- unsigned long flags;
- struct file *file = epi->ffd.file;
-
- /*
- * Removes poll wait queue hooks. We _have_ to do this without holding
- * the "ep->lock" otherwise a deadlock might occur. This because of the
- * sequence of the lock acquisition. Here we do "ep->lock" then the wait
- * queue head lock when unregistering the wait queue. The wakeup callback
- * will run by holding the wait queue head lock and will call our callback
- * that will try to get "ep->lock".
- */
- ep_unregister_pollwait(ep, epi);
-
- /* Remove the current item from the list of epoll hooks */
- spin_lock(&file->f_ep_lock);
- if (ep_is_linked(&epi->fllink))
- list_del_init(&epi->fllink);
- spin_unlock(&file->f_ep_lock);
-
- /* We need to acquire the write IRQ lock before calling ep_unlink() */
- write_lock_irqsave(&ep->lock, flags);
-
- /* Really unlink the item from the RB tree */
- error = ep_unlink(ep, epi);
-
- write_unlock_irqrestore(&ep->lock, flags);
-
- if (error)
- goto eexit_1;
-
- /* At this point it is safe to free the eventpoll item */
- ep_release_epitem(epi);
-
- error = 0;
-eexit_1:
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: ep_remove(%p, %p) = %d\n",
- current, ep, file, error));
-
- return error;
-}
-
-
-/*
- * This is the callback that is passed to the wait queue wakeup
- * machanism. It is called by the stored file descriptors when they
- * have events to report.
- */
-static int ep_poll_callback(wait_queue_t *wait, unsigned mode, int sync, void *key)
-{
- int pwake = 0;
- unsigned long flags;
- struct epitem *epi = ep_item_from_wait(wait);
- struct eventpoll *ep = epi->ep;
-
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: poll_callback(%p) epi=%p ep=%p\n",
- current, epi->ffd.file, epi, ep));
-
- write_lock_irqsave(&ep->lock, flags);
-
- /*
- * If the event mask does not contain any poll(2) event, we consider the
- * descriptor to be disabled. This condition is likely the effect of the
- * EPOLLONESHOT bit that disables the descriptor when an event is received,
- * until the next EPOLL_CTL_MOD will be issued.
- */
- if (!(epi->event.events & ~EP_PRIVATE_BITS))
- goto is_disabled;
-
- /* If this file is already in the ready list we exit soon */
- if (ep_is_linked(&epi->rdllink))
- goto is_linked;
-
- list_add_tail(&epi->rdllink, &ep->rdllist);
-
-is_linked:
- /*
- * Wake up ( if active ) both the eventpoll wait list and the ->poll()
- * wait list.
- */
- if (waitqueue_active(&ep->wq))
- __wake_up_locked(&ep->wq, TASK_UNINTERRUPTIBLE |
- TASK_INTERRUPTIBLE);
- if (waitqueue_active(&ep->poll_wait))
- pwake++;
-
-is_disabled:
- write_unlock_irqrestore(&ep->lock, flags);
-
- /* We have to call this outside the lock */
- if (pwake)
- ep_poll_safewake(&psw, &ep->poll_wait);
-
- return 1;
-}
-
-
-static int ep_eventpoll_close(struct inode *inode, struct file *file)
-{
- struct eventpoll *ep = file->private_data;
-
- if (ep) {
- ep_free(ep);
- kfree(ep);
- }
-
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: close() ep=%p\n", current, ep));
- return 0;
-}
-
-
-static unsigned int ep_eventpoll_poll(struct file *file, poll_table *wait)
-{
- unsigned int pollflags = 0;
- unsigned long flags;
- struct eventpoll *ep = file->private_data;
-
- /* Insert inside our poll wait queue */
- poll_wait(file, &ep->poll_wait, wait);
+ write_unlock_irqrestore(&ep->lock, flags);
- /* Check our condition */
- read_lock_irqsave(&ep->lock, flags);
- if (!list_empty(&ep->rdllist))
- pollflags = POLLIN | POLLRDNORM;
- read_unlock_irqrestore(&ep->lock, flags);
+ /* We have to call this outside the lock */
+ if (pwake)
+ ep_poll_safewake(&psw, &ep->poll_wait);
- return pollflags;
+ return 0;
}
-
/*
* This function is called without holding the "ep->lock" since the call to
* __copy_to_user() might sleep, and also f_op->poll() might reenable the IRQ
return eventcnt == 0 ? error: eventcnt;
}
-
/*
* Perform the transfer of events to user space.
*/
return eventcnt;
}
-
static int ep_poll(struct eventpoll *ep, struct epoll_event __user *events,
int maxevents, long timeout)
{
return res;
}
-static int eventpollfs_delete_dentry(struct dentry *dentry)
+/*
+ * It opens an eventpoll file descriptor by suggesting a storage of "size"
+ * file descriptors. The size parameter is just an hint about how to size
+ * data structures. It won't prevent the user to store more than "size"
+ * file descriptors inside the epoll interface. It is the kernel part of
+ * the userspace epoll_create(2).
+ */
+asmlinkage long sys_epoll_create(int size)
{
+ int error, fd = -1;
+ struct eventpoll *ep;
+ struct inode *inode;
+ struct file *file;
- return 1;
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d)\n",
+ current, size));
+
+ /*
+ * Sanity check on the size parameter, and create the internal data
+ * structure ( "struct eventpoll" ).
+ */
+ error = -EINVAL;
+ if (size <= 0 || (error = ep_alloc(&ep)) != 0)
+ goto error_return;
+
+ /*
+ * Creates all the items needed to setup an eventpoll file. That is,
+ * a file structure, and inode and a free file descriptor.
+ */
+ error = anon_inode_getfd(&fd, &inode, &file, "[eventpoll]",
+ &eventpoll_fops, ep);
+ if (error)
+ goto error_free;
+
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d) = %d\n",
+ current, size, fd));
+
+ return fd;
+
+error_free:
+ ep_free(ep);
+ kfree(ep);
+error_return:
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_create(%d) = %d\n",
+ current, size, error));
+ return error;
}
-static struct inode *ep_eventpoll_inode(void)
+/*
+ * The following function implements the controller interface for
+ * the eventpoll file that enables the insertion/removal/change of
+ * file descriptors inside the interest set. It represents
+ * the kernel part of the user space epoll_ctl(2).
+ */
+asmlinkage long sys_epoll_ctl(int epfd, int op, int fd,
+ struct epoll_event __user *event)
{
- int error = -ENOMEM;
- struct inode *inode = new_inode(eventpoll_mnt->mnt_sb);
+ int error;
+ struct file *file, *tfile;
+ struct eventpoll *ep;
+ struct epitem *epi;
+ struct epoll_event epds;
+
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_ctl(%d, %d, %d, %p)\n",
+ current, epfd, op, fd, event));
+
+ error = -EFAULT;
+ if (ep_op_has_event(op) &&
+ copy_from_user(&epds, event, sizeof(struct epoll_event)))
+ goto error_return;
+
+ /* Get the "struct file *" for the eventpoll file */
+ error = -EBADF;
+ file = fget(epfd);
+ if (!file)
+ goto error_return;
+
+ /* Get the "struct file *" for the target file */
+ tfile = fget(fd);
+ if (!tfile)
+ goto error_fput;
+
+ /* The target file descriptor must support poll */
+ error = -EPERM;
+ if (!tfile->f_op || !tfile->f_op->poll)
+ goto error_tgt_fput;
+
+ /*
+ * We have to check that the file structure underneath the file descriptor
+ * the user passed to us _is_ an eventpoll file. And also we do not permit
+ * adding an epoll file descriptor inside itself.
+ */
+ error = -EINVAL;
+ if (file == tfile || !is_file_epoll(file))
+ goto error_tgt_fput;
+
+ /*
+ * At this point it is safe to assume that the "private_data" contains
+ * our own data structure.
+ */
+ ep = file->private_data;
+
+ down_write(&ep->sem);
- if (!inode)
- goto eexit_1;
+ /* Try to lookup the file inside our RB tree */
+ epi = ep_find(ep, tfile, fd);
- inode->i_fop = &eventpoll_fops;
+ error = -EINVAL;
+ switch (op) {
+ case EPOLL_CTL_ADD:
+ if (!epi) {
+ epds.events |= POLLERR | POLLHUP;
+ error = ep_insert(ep, &epds, tfile, fd);
+ } else
+ error = -EEXIST;
+ break;
+ case EPOLL_CTL_DEL:
+ if (epi)
+ error = ep_remove(ep, epi);
+ else
+ error = -ENOENT;
+ break;
+ case EPOLL_CTL_MOD:
+ if (epi) {
+ epds.events |= POLLERR | POLLHUP;
+ error = ep_modify(ep, epi, &epds);
+ } else
+ error = -ENOENT;
+ break;
+ }
/*
- * Mark the inode dirty from the very beginning,
- * that way it will never be moved to the dirty
- * list because mark_inode_dirty() will think
- * that it already _is_ on the dirty list.
+ * The function ep_find() increments the usage count of the structure
+ * so, if this is not NULL, we need to release it.
*/
- inode->i_state = I_DIRTY;
- inode->i_mode = S_IRUSR | S_IWUSR;
- inode->i_uid = current->fsuid;
- inode->i_gid = current->fsgid;
- inode->i_atime = inode->i_mtime = inode->i_ctime = CURRENT_TIME;
- return inode;
-
-eexit_1:
- return ERR_PTR(error);
+ if (epi)
+ ep_release_epitem(epi);
+ up_write(&ep->sem);
+
+error_tgt_fput:
+ fput(tfile);
+error_fput:
+ fput(file);
+error_return:
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_ctl(%d, %d, %d, %p) = %d\n",
+ current, epfd, op, fd, event, error));
+
+ return error;
}
-static int
-eventpollfs_get_sb(struct file_system_type *fs_type, int flags,
- const char *dev_name, void *data, struct vfsmount *mnt)
+/*
+ * Implement the event wait interface for the eventpoll file. It is the kernel
+ * part of the user space epoll_wait(2).
+ */
+asmlinkage long sys_epoll_wait(int epfd, struct epoll_event __user *events,
+ int maxevents, int timeout)
{
- return get_sb_pseudo(fs_type, "eventpoll:", NULL, EVENTPOLLFS_MAGIC,
- mnt);
+ int error;
+ struct file *file;
+ struct eventpoll *ep;
+
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_wait(%d, %p, %d, %d)\n",
+ current, epfd, events, maxevents, timeout));
+
+ /* The maximum number of event must be greater than zero */
+ if (maxevents <= 0 || maxevents > EP_MAX_EVENTS)
+ return -EINVAL;
+
+ /* Verify that the area passed by the user is writeable */
+ if (!access_ok(VERIFY_WRITE, events, maxevents * sizeof(struct epoll_event))) {
+ error = -EFAULT;
+ goto error_return;
+ }
+
+ /* Get the "struct file *" for the eventpoll file */
+ error = -EBADF;
+ file = fget(epfd);
+ if (!file)
+ goto error_return;
+
+ /*
+ * We have to check that the file structure underneath the fd
+ * the user passed to us _is_ an eventpoll file.
+ */
+ error = -EINVAL;
+ if (!is_file_epoll(file))
+ goto error_fput;
+
+ /*
+ * At this point it is safe to assume that the "private_data" contains
+ * our own data structure.
+ */
+ ep = file->private_data;
+
+ /* Time to fish for events ... */
+ error = ep_poll(ep, events, maxevents, timeout);
+
+error_fput:
+ fput(file);
+error_return:
+ DNPRINTK(3, (KERN_INFO "[%p] eventpoll: sys_epoll_wait(%d, %p, %d, %d) = %d\n",
+ current, epfd, events, maxevents, timeout, error));
+
+ return error;
}
+#ifdef TIF_RESTORE_SIGMASK
-static int __init eventpoll_init(void)
+/*
+ * Implement the event wait interface for the eventpoll file. It is the kernel
+ * part of the user space epoll_pwait(2).
+ */
+asmlinkage long sys_epoll_pwait(int epfd, struct epoll_event __user *events,
+ int maxevents, int timeout, const sigset_t __user *sigmask,
+ size_t sigsetsize)
{
int error;
+ sigset_t ksigmask, sigsaved;
+
+ /*
+ * If the caller wants a certain signal mask to be set during the wait,
+ * we apply it here.
+ */
+ if (sigmask) {
+ if (sigsetsize != sizeof(sigset_t))
+ return -EINVAL;
+ if (copy_from_user(&ksigmask, sigmask, sizeof(ksigmask)))
+ return -EFAULT;
+ sigdelsetmask(&ksigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
+ sigprocmask(SIG_SETMASK, &ksigmask, &sigsaved);
+ }
+
+ error = sys_epoll_wait(epfd, events, maxevents, timeout);
+
+ /*
+ * If we changed the signal mask, we need to restore the original one.
+ * In case we've got a signal while waiting, we do not restore the
+ * signal mask yet, and we allow do_signal() to deliver the signal on
+ * the way back to userspace, before the signal mask is restored.
+ */
+ if (sigmask) {
+ if (error == -EINTR) {
+ memcpy(¤t->saved_sigmask, &sigsaved,
+ sizeof(sigsaved));
+ set_thread_flag(TIF_RESTORE_SIGMASK);
+ } else
+ sigprocmask(SIG_SETMASK, &sigsaved, NULL);
+ }
+
+ return error;
+}
+
+#endif /* #ifdef TIF_RESTORE_SIGMASK */
+static int __init eventpoll_init(void)
+{
mutex_init(&epmutex);
/* Initialize the structure used to perform safe poll wait head wake ups */
sizeof(struct eppoll_entry), 0,
EPI_SLAB_DEBUG|SLAB_PANIC, NULL, NULL);
- /*
- * Register the virtual file system that will be the source of inodes
- * for the eventpoll files
- */
- error = register_filesystem(&eventpoll_fs_type);
- if (error)
- goto epanic;
-
- /* Mount the above commented virtual file system */
- eventpoll_mnt = kern_mount(&eventpoll_fs_type);
- error = PTR_ERR(eventpoll_mnt);
- if (IS_ERR(eventpoll_mnt))
- goto epanic;
-
- DNPRINTK(3, (KERN_INFO "[%p] eventpoll: successfully initialized.\n",
- current));
return 0;
-
-epanic:
- panic("eventpoll_init() failed\n");
-}
-
-
-static void __exit eventpoll_exit(void)
-{
- /* Undo all operations done inside eventpoll_init() */
- unregister_filesystem(&eventpoll_fs_type);
- mntput(eventpoll_mnt);
- kmem_cache_destroy(pwq_cache);
- kmem_cache_destroy(epi_cache);
}
+fs_initcall(eventpoll_init);
-module_init(eventpoll_init);
-module_exit(eventpoll_exit);
-
-MODULE_LICENSE("GPL");
#include <linux/tsacct_kern.h>
#include <linux/cn_proc.h>
#include <linux/audit.h>
+#include <linux/signalfd.h>
#include <asm/uaccess.h>
#include <asm/mmu_context.h>
struct task_struct *leader = NULL;
int count;
+ /*
+ * Tell all the sighand listeners that this sighand has
+ * been detached. The signalfd_detach() function grabs the
+ * sighand lock, if signal listeners are present on the sighand.
+ */
+ signalfd_detach(tsk);
+
/*
* If we don't share sighandlers, then we aren't sharing anything
* and we can just re-use it all.
*/
detach_pid(tsk, PIDTYPE_PID);
tsk->pid = leader->pid;
- attach_pid(tsk, PIDTYPE_PID, tsk->pid);
+ attach_pid(tsk, PIDTYPE_PID, find_pid(tsk->pid));
transfer_pid(leader, tsk, PIDTYPE_PGID);
transfer_pid(leader, tsk, PIDTYPE_SID);
list_replace_rcu(&leader->tasks, &tsk->tasks);
spin_unlock(&oldsighand->siglock);
write_unlock_irq(&tasklist_lock);
- if (atomic_dec_and_test(&oldsighand->count))
- kmem_cache_free(sighand_cachep, oldsighand);
+ __cleanup_sighand(oldsighand);
}
BUG_ON(!thread_group_leader(tsk));
* written, so it can intelligently allocate a suitably-sized BIO. For now,
* just allocate full-size (16-page) BIOs.
*/
-static struct bio *
-__mpage_writepage(struct bio *bio, struct page *page, get_block_t get_block,
- sector_t *last_block_in_bio, int *ret, struct writeback_control *wbc,
- writepage_t writepage_fn)
+struct mpage_data {
+ struct bio *bio;
+ sector_t last_block_in_bio;
+ get_block_t *get_block;
+ unsigned use_writepage;
+};
+
+static int __mpage_writepage(struct page *page, struct writeback_control *wbc,
+ void *data)
{
+ struct mpage_data *mpd = data;
+ struct bio *bio = mpd->bio;
struct address_space *mapping = page->mapping;
struct inode *inode = page->mapping->host;
const unsigned blkbits = inode->i_blkbits;
int length;
struct buffer_head map_bh;
loff_t i_size = i_size_read(inode);
+ int ret = 0;
if (page_has_buffers(page)) {
struct buffer_head *head = page_buffers(page);
map_bh.b_state = 0;
map_bh.b_size = 1 << blkbits;
- if (get_block(inode, block_in_file, &map_bh, 1))
+ if (mpd->get_block(inode, block_in_file, &map_bh, 1))
goto confused;
if (buffer_new(&map_bh))
unmap_underlying_metadata(map_bh.b_bdev,
/*
* This page will go to BIO. Do we need to send this BIO off first?
*/
- if (bio && *last_block_in_bio != blocks[0] - 1)
+ if (bio && mpd->last_block_in_bio != blocks[0] - 1)
bio = mpage_bio_submit(WRITE, bio);
alloc_new:
boundary_block, 1 << blkbits);
}
} else {
- *last_block_in_bio = blocks[blocks_per_page - 1];
+ mpd->last_block_in_bio = blocks[blocks_per_page - 1];
}
goto out;
if (bio)
bio = mpage_bio_submit(WRITE, bio);
- if (writepage_fn) {
- *ret = (*writepage_fn)(page, wbc);
+ if (mpd->use_writepage) {
+ ret = mapping->a_ops->writepage(page, wbc);
} else {
- *ret = -EAGAIN;
+ ret = -EAGAIN;
goto out;
}
/*
* The caller has a ref on the inode, so *mapping is stable
*/
- mapping_set_error(mapping, *ret);
+ mapping_set_error(mapping, ret);
out:
- return bio;
+ mpd->bio = bio;
+ return ret;
}
/**
* the call was made get new I/O started against them. If wbc->sync_mode is
* WB_SYNC_ALL then we were called for data integrity and we must wait for
* existing IO to complete.
- *
- * If you fix this you should check generic_writepages() also!
*/
int
mpage_writepages(struct address_space *mapping,
struct writeback_control *wbc, get_block_t get_block)
{
- struct backing_dev_info *bdi = mapping->backing_dev_info;
- struct bio *bio = NULL;
- sector_t last_block_in_bio = 0;
- int ret = 0;
- int done = 0;
- int (*writepage)(struct page *page, struct writeback_control *wbc);
- struct pagevec pvec;
- int nr_pages;
- pgoff_t index;
- pgoff_t end; /* Inclusive */
- int scanned = 0;
- int range_whole = 0;
-
- if (wbc->nonblocking && bdi_write_congested(bdi)) {
- wbc->encountered_congestion = 1;
- return 0;
- }
-
- writepage = NULL;
- if (get_block == NULL)
- writepage = mapping->a_ops->writepage;
-
- pagevec_init(&pvec, 0);
- if (wbc->range_cyclic) {
- index = mapping->writeback_index; /* Start from prev offset */
- end = -1;
- } else {
- index = wbc->range_start >> PAGE_CACHE_SHIFT;
- end = wbc->range_end >> PAGE_CACHE_SHIFT;
- if (wbc->range_start == 0 && wbc->range_end == LLONG_MAX)
- range_whole = 1;
- scanned = 1;
+ int ret;
+
+ if (!get_block)
+ ret = generic_writepages(mapping, wbc);
+ else {
+ struct mpage_data mpd = {
+ .bio = NULL,
+ .last_block_in_bio = 0,
+ .get_block = get_block,
+ .use_writepage = 1,
+ };
+
+ ret = write_cache_pages(mapping, wbc, __mpage_writepage, &mpd);
+ if (mpd.bio)
+ mpage_bio_submit(WRITE, mpd.bio);
}
-retry:
- while (!done && (index <= end) &&
- (nr_pages = pagevec_lookup_tag(&pvec, mapping, &index,
- PAGECACHE_TAG_DIRTY,
- min(end - index, (pgoff_t)PAGEVEC_SIZE-1) + 1))) {
- unsigned i;
-
- scanned = 1;
- for (i = 0; i < nr_pages; i++) {
- struct page *page = pvec.pages[i];
-
- /*
- * At this point we hold neither mapping->tree_lock nor
- * lock on the page itself: the page may be truncated or
- * invalidated (changing page->mapping to NULL), or even
- * swizzled back from swapper_space to tmpfs file
- * mapping
- */
-
- lock_page(page);
-
- if (unlikely(page->mapping != mapping)) {
- unlock_page(page);
- continue;
- }
-
- if (!wbc->range_cyclic && page->index > end) {
- done = 1;
- unlock_page(page);
- continue;
- }
-
- if (wbc->sync_mode != WB_SYNC_NONE)
- wait_on_page_writeback(page);
-
- if (PageWriteback(page) ||
- !clear_page_dirty_for_io(page)) {
- unlock_page(page);
- continue;
- }
-
- if (writepage) {
- ret = (*writepage)(page, wbc);
- mapping_set_error(mapping, ret);
- } else {
- bio = __mpage_writepage(bio, page, get_block,
- &last_block_in_bio, &ret, wbc,
- page->mapping->a_ops->writepage);
- }
- if (unlikely(ret == AOP_WRITEPAGE_ACTIVATE))
- unlock_page(page);
- if (ret || (--(wbc->nr_to_write) <= 0))
- done = 1;
- if (wbc->nonblocking && bdi_write_congested(bdi)) {
- wbc->encountered_congestion = 1;
- done = 1;
- }
- }
- pagevec_release(&pvec);
- cond_resched();
- }
- if (!scanned && !done) {
- /*
- * We hit the last page and there is more work to be done: wrap
- * back to the start of the file
- */
- scanned = 1;
- index = 0;
- goto retry;
- }
- if (wbc->range_cyclic || (range_whole && wbc->nr_to_write > 0))
- mapping->writeback_index = index;
- if (bio)
- mpage_bio_submit(WRITE, bio);
return ret;
}
EXPORT_SYMBOL(mpage_writepages);
int mpage_writepage(struct page *page, get_block_t get_block,
struct writeback_control *wbc)
{
- int ret = 0;
- struct bio *bio;
- sector_t last_block_in_bio = 0;
-
- bio = __mpage_writepage(NULL, page, get_block,
- &last_block_in_bio, &ret, wbc, NULL);
- if (bio)
- mpage_bio_submit(WRITE, bio);
-
+ struct mpage_data mpd = {
+ .bio = NULL,
+ .last_block_in_bio = 0,
+ .get_block = get_block,
+ .use_writepage = 0,
+ };
+ int ret = __mpage_writepage(page, wbc, &mpd);
+ if (mpd.bio)
+ mpage_bio_submit(WRITE, mpd.bio);
return ret;
}
EXPORT_SYMBOL(mpage_writepage);
config SYSV68_PARTITION
bool "SYSV68 partition table support" if PARTITION_ADVANCED
- default y if M68K
+ default y if VME
help
Say Y here if you would like to be able to read the hard disk
partition table format used by Motorola Delta machines (using
}
static inline int
-pmbr_part_valid(struct partition *part, u64 lastlba)
+pmbr_part_valid(struct partition *part)
{
if (part->sys_ind == EFI_PMBR_OSTYPE_EFI_GPT &&
le32_to_cpu(part->start_sect) == 1UL)
/**
* is_pmbr_valid(): test Protective MBR for validity
* @mbr: pointer to a legacy mbr structure
- * @lastlba: last_lba for the whole device
*
* Description: Returns 1 if PMBR is valid, 0 otherwise.
* Validity depends on two things:
* 2) One partition of type 0xEE is found
*/
static int
-is_pmbr_valid(legacy_mbr *mbr, u64 lastlba)
+is_pmbr_valid(legacy_mbr *mbr)
{
int i;
if (!mbr || le16_to_cpu(mbr->signature) != MSDOS_MBR_SIGNATURE)
return 0;
for (i = 0; i < 4; i++)
- if (pmbr_part_valid(&mbr->partition_record[i], lastlba))
+ if (pmbr_part_valid(&mbr->partition_record[i]))
return 1;
return 0;
}
int good_pgpt = 0, good_agpt = 0, good_pmbr = 0;
gpt_header *pgpt = NULL, *agpt = NULL;
gpt_entry *pptes = NULL, *aptes = NULL;
- legacy_mbr *legacymbr = NULL;
+ legacy_mbr *legacymbr;
u64 lastlba;
if (!bdev || !gpt || !ptes)
return 0;
if (legacymbr) {
read_lba(bdev, 0, (u8 *) legacymbr,
sizeof (*legacymbr));
- good_pmbr = is_pmbr_valid(legacymbr, lastlba);
+ good_pmbr = is_pmbr_valid(legacymbr);
kfree(legacymbr);
- legacymbr=NULL;
}
if (!good_pmbr)
goto fail;
--- /dev/null
+/*
+ * fs/signalfd.c
+ *
+ * Copyright (C) 2003 Linus Torvalds
+ *
+ * Mon Mar 5, 2007: Davide Libenzi <davidel@xmailserver.org>
+ * Changed ->read() to return a siginfo strcture instead of signal number.
+ * Fixed locking in ->poll().
+ * Added sighand-detach notification.
+ * Added fd re-use in sys_signalfd() syscall.
+ * Now using anonymous inode source.
+ * Thanks to Oleg Nesterov for useful code review and suggestions.
+ * More comments and suggestions from Arnd Bergmann.
+ */
+
+#include <linux/file.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/signal.h>
+#include <linux/list.h>
+#include <linux/anon_inodes.h>
+#include <linux/signalfd.h>
+
+struct signalfd_ctx {
+ struct list_head lnk;
+ wait_queue_head_t wqh;
+ sigset_t sigmask;
+ struct task_struct *tsk;
+};
+
+struct signalfd_lockctx {
+ struct task_struct *tsk;
+ unsigned long flags;
+};
+
+/*
+ * Tries to acquire the sighand lock. We do not increment the sighand
+ * use count, and we do not even pin the task struct, so we need to
+ * do it inside an RCU read lock, and we must be prepared for the
+ * ctx->tsk going to NULL (in signalfd_deliver()), and for the sighand
+ * being detached. We return 0 if the sighand has been detached, or
+ * 1 if we were able to pin the sighand lock.
+ */
+static int signalfd_lock(struct signalfd_ctx *ctx, struct signalfd_lockctx *lk)
+{
+ struct sighand_struct *sighand = NULL;
+
+ rcu_read_lock();
+ lk->tsk = rcu_dereference(ctx->tsk);
+ if (likely(lk->tsk != NULL))
+ sighand = lock_task_sighand(lk->tsk, &lk->flags);
+ rcu_read_unlock();
+
+ if (sighand && !ctx->tsk) {
+ unlock_task_sighand(lk->tsk, &lk->flags);
+ sighand = NULL;
+ }
+
+ return sighand != NULL;
+}
+
+static void signalfd_unlock(struct signalfd_lockctx *lk)
+{
+ unlock_task_sighand(lk->tsk, &lk->flags);
+}
+
+/*
+ * This must be called with the sighand lock held.
+ */
+void signalfd_deliver(struct task_struct *tsk, int sig)
+{
+ struct sighand_struct *sighand = tsk->sighand;
+ struct signalfd_ctx *ctx, *tmp;
+
+ BUG_ON(!sig);
+ list_for_each_entry_safe(ctx, tmp, &sighand->signalfd_list, lnk) {
+ /*
+ * We use a negative signal value as a way to broadcast that the
+ * sighand has been orphaned, so that we can notify all the
+ * listeners about this. Remember the ctx->sigmask is inverted,
+ * so if the user is interested in a signal, that corresponding
+ * bit will be zero.
+ */
+ if (sig < 0) {
+ if (ctx->tsk == tsk) {
+ ctx->tsk = NULL;
+ list_del_init(&ctx->lnk);
+ wake_up(&ctx->wqh);
+ }
+ } else {
+ if (!sigismember(&ctx->sigmask, sig))
+ wake_up(&ctx->wqh);
+ }
+ }
+}
+
+static void signalfd_cleanup(struct signalfd_ctx *ctx)
+{
+ struct signalfd_lockctx lk;
+
+ /*
+ * This is tricky. If the sighand is gone, we do not need to remove
+ * context from the list, the list itself won't be there anymore.
+ */
+ if (signalfd_lock(ctx, &lk)) {
+ list_del(&ctx->lnk);
+ signalfd_unlock(&lk);
+ }
+ kfree(ctx);
+}
+
+static int signalfd_release(struct inode *inode, struct file *file)
+{
+ signalfd_cleanup(file->private_data);
+ return 0;
+}
+
+static unsigned int signalfd_poll(struct file *file, poll_table *wait)
+{
+ struct signalfd_ctx *ctx = file->private_data;
+ unsigned int events = 0;
+ struct signalfd_lockctx lk;
+
+ poll_wait(file, &ctx->wqh, wait);
+
+ /*
+ * Let the caller get a POLLIN in this case, ala socket recv() when
+ * the peer disconnects.
+ */
+ if (signalfd_lock(ctx, &lk)) {
+ if (next_signal(&lk.tsk->pending, &ctx->sigmask) > 0 ||
+ next_signal(&lk.tsk->signal->shared_pending,
+ &ctx->sigmask) > 0)
+ events |= POLLIN;
+ signalfd_unlock(&lk);
+ } else
+ events |= POLLIN;
+
+ return events;
+}
+
+/*
+ * Copied from copy_siginfo_to_user() in kernel/signal.c
+ */
+static int signalfd_copyinfo(struct signalfd_siginfo __user *uinfo,
+ siginfo_t const *kinfo)
+{
+ long err;
+
+ BUILD_BUG_ON(sizeof(struct signalfd_siginfo) != 128);
+
+ /*
+ * Unused memebers should be zero ...
+ */
+ err = __clear_user(uinfo, sizeof(*uinfo));
+
+ /*
+ * If you change siginfo_t structure, please be sure
+ * this code is fixed accordingly.
+ */
+ err |= __put_user(kinfo->si_signo, &uinfo->signo);
+ err |= __put_user(kinfo->si_errno, &uinfo->err);
+ err |= __put_user((short)kinfo->si_code, &uinfo->code);
+ switch (kinfo->si_code & __SI_MASK) {
+ case __SI_KILL:
+ err |= __put_user(kinfo->si_pid, &uinfo->pid);
+ err |= __put_user(kinfo->si_uid, &uinfo->uid);
+ break;
+ case __SI_TIMER:
+ err |= __put_user(kinfo->si_tid, &uinfo->tid);
+ err |= __put_user(kinfo->si_overrun, &uinfo->overrun);
+ err |= __put_user((long)kinfo->si_ptr, &uinfo->svptr);
+ break;
+ case __SI_POLL:
+ err |= __put_user(kinfo->si_band, &uinfo->band);
+ err |= __put_user(kinfo->si_fd, &uinfo->fd);
+ break;
+ case __SI_FAULT:
+ err |= __put_user((long)kinfo->si_addr, &uinfo->addr);
+#ifdef __ARCH_SI_TRAPNO
+ err |= __put_user(kinfo->si_trapno, &uinfo->trapno);
+#endif
+ break;
+ case __SI_CHLD:
+ err |= __put_user(kinfo->si_pid, &uinfo->pid);
+ err |= __put_user(kinfo->si_uid, &uinfo->uid);
+ err |= __put_user(kinfo->si_status, &uinfo->status);
+ err |= __put_user(kinfo->si_utime, &uinfo->utime);
+ err |= __put_user(kinfo->si_stime, &uinfo->stime);
+ break;
+ case __SI_RT: /* This is not generated by the kernel as of now. */
+ case __SI_MESGQ: /* But this is */
+ err |= __put_user(kinfo->si_pid, &uinfo->pid);
+ err |= __put_user(kinfo->si_uid, &uinfo->uid);
+ err |= __put_user((long)kinfo->si_ptr, &uinfo->svptr);
+ break;
+ default: /* this is just in case for now ... */
+ err |= __put_user(kinfo->si_pid, &uinfo->pid);
+ err |= __put_user(kinfo->si_uid, &uinfo->uid);
+ break;
+ }
+
+ return err ? -EFAULT: sizeof(*uinfo);
+}
+
+/*
+ * Returns either the size of a "struct signalfd_siginfo", or zero if the
+ * sighand we are attached to, has been orphaned. The "count" parameter
+ * must be at least the size of a "struct signalfd_siginfo".
+ */
+static ssize_t signalfd_read(struct file *file, char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ struct signalfd_ctx *ctx = file->private_data;
+ ssize_t res = 0;
+ int locked, signo;
+ siginfo_t info;
+ struct signalfd_lockctx lk;
+ DECLARE_WAITQUEUE(wait, current);
+
+ if (count < sizeof(struct signalfd_siginfo))
+ return -EINVAL;
+ locked = signalfd_lock(ctx, &lk);
+ if (!locked)
+ return 0;
+ res = -EAGAIN;
+ signo = dequeue_signal(lk.tsk, &ctx->sigmask, &info);
+ if (signo == 0 && !(file->f_flags & O_NONBLOCK)) {
+ add_wait_queue(&ctx->wqh, &wait);
+ for (;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ signo = dequeue_signal(lk.tsk, &ctx->sigmask, &info);
+ if (signo != 0)
+ break;
+ if (signal_pending(current)) {
+ res = -ERESTARTSYS;
+ break;
+ }
+ signalfd_unlock(&lk);
+ schedule();
+ locked = signalfd_lock(ctx, &lk);
+ if (unlikely(!locked)) {
+ /*
+ * Let the caller read zero byte, ala socket
+ * recv() when the peer disconnect. This test
+ * must be done before doing a dequeue_signal(),
+ * because if the sighand has been orphaned,
+ * the dequeue_signal() call is going to crash.
+ */
+ res = 0;
+ break;
+ }
+ }
+ remove_wait_queue(&ctx->wqh, &wait);
+ __set_current_state(TASK_RUNNING);
+ }
+ if (likely(locked))
+ signalfd_unlock(&lk);
+ if (likely(signo))
+ res = signalfd_copyinfo((struct signalfd_siginfo __user *) buf,
+ &info);
+
+ return res;
+}
+
+static const struct file_operations signalfd_fops = {
+ .release = signalfd_release,
+ .poll = signalfd_poll,
+ .read = signalfd_read,
+};
+
+/*
+ * Create a file descriptor that is associated with our signal
+ * state. We can pass it around to others if we want to, but
+ * it will always be _our_ signal state.
+ */
+asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask)
+{
+ int error;
+ sigset_t sigmask;
+ struct signalfd_ctx *ctx;
+ struct sighand_struct *sighand;
+ struct file *file;
+ struct inode *inode;
+ struct signalfd_lockctx lk;
+
+ if (sizemask != sizeof(sigset_t) ||
+ copy_from_user(&sigmask, user_mask, sizeof(sigmask)))
+ return error = -EINVAL;
+ sigdelsetmask(&sigmask, sigmask(SIGKILL) | sigmask(SIGSTOP));
+ signotset(&sigmask);
+
+ if (ufd == -1) {
+ ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ init_waitqueue_head(&ctx->wqh);
+ ctx->sigmask = sigmask;
+ ctx->tsk = current;
+
+ sighand = current->sighand;
+ /*
+ * Add this fd to the list of signal listeners.
+ */
+ spin_lock_irq(&sighand->siglock);
+ list_add_tail(&ctx->lnk, &sighand->signalfd_list);
+ spin_unlock_irq(&sighand->siglock);
+
+ /*
+ * When we call this, the initialization must be complete, since
+ * anon_inode_getfd() will install the fd.
+ */
+ error = anon_inode_getfd(&ufd, &inode, &file, "[signalfd]",
+ &signalfd_fops, ctx);
+ if (error)
+ goto err_fdalloc;
+ } else {
+ file = fget(ufd);
+ if (!file)
+ return -EBADF;
+ ctx = file->private_data;
+ if (file->f_op != &signalfd_fops) {
+ fput(file);
+ return -EINVAL;
+ }
+ /*
+ * We need to be prepared of the fact that the sighand this fd
+ * is attached to, has been detched. In that case signalfd_lock()
+ * will return 0, and we'll just skip setting the new mask.
+ */
+ if (signalfd_lock(ctx, &lk)) {
+ ctx->sigmask = sigmask;
+ signalfd_unlock(&lk);
+ }
+ wake_up(&ctx->wqh);
+ fput(file);
+ }
+
+ return ufd;
+
+err_fdalloc:
+ signalfd_cleanup(ctx);
+ return error;
+}
+
--- /dev/null
+/*
+ * fs/timerfd.c
+ *
+ * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
+ *
+ *
+ * Thanks to Thomas Gleixner for code reviews and useful comments.
+ *
+ */
+
+#include <linux/file.h>
+#include <linux/poll.h>
+#include <linux/init.h>
+#include <linux/fs.h>
+#include <linux/sched.h>
+#include <linux/kernel.h>
+#include <linux/list.h>
+#include <linux/spinlock.h>
+#include <linux/time.h>
+#include <linux/hrtimer.h>
+#include <linux/anon_inodes.h>
+#include <linux/timerfd.h>
+
+struct timerfd_ctx {
+ struct hrtimer tmr;
+ ktime_t tintv;
+ spinlock_t lock;
+ wait_queue_head_t wqh;
+ int expired;
+};
+
+/*
+ * This gets called when the timer event triggers. We set the "expired"
+ * flag, but we do not re-arm the timer (in case it's necessary,
+ * tintv.tv64 != 0) until the timer is read.
+ */
+static enum hrtimer_restart timerfd_tmrproc(struct hrtimer *htmr)
+{
+ struct timerfd_ctx *ctx = container_of(htmr, struct timerfd_ctx, tmr);
+ unsigned long flags;
+
+ spin_lock_irqsave(&ctx->lock, flags);
+ ctx->expired = 1;
+ wake_up_locked(&ctx->wqh);
+ spin_unlock_irqrestore(&ctx->lock, flags);
+
+ return HRTIMER_NORESTART;
+}
+
+static void timerfd_setup(struct timerfd_ctx *ctx, int clockid, int flags,
+ const struct itimerspec *ktmr)
+{
+ enum hrtimer_mode htmode;
+ ktime_t texp;
+
+ htmode = (flags & TFD_TIMER_ABSTIME) ?
+ HRTIMER_MODE_ABS: HRTIMER_MODE_REL;
+
+ texp = timespec_to_ktime(ktmr->it_value);
+ ctx->expired = 0;
+ ctx->tintv = timespec_to_ktime(ktmr->it_interval);
+ hrtimer_init(&ctx->tmr, clockid, htmode);
+ ctx->tmr.expires = texp;
+ ctx->tmr.function = timerfd_tmrproc;
+ if (texp.tv64 != 0)
+ hrtimer_start(&ctx->tmr, texp, htmode);
+}
+
+static int timerfd_release(struct inode *inode, struct file *file)
+{
+ struct timerfd_ctx *ctx = file->private_data;
+
+ hrtimer_cancel(&ctx->tmr);
+ kfree(ctx);
+ return 0;
+}
+
+static unsigned int timerfd_poll(struct file *file, poll_table *wait)
+{
+ struct timerfd_ctx *ctx = file->private_data;
+ unsigned int events = 0;
+ unsigned long flags;
+
+ poll_wait(file, &ctx->wqh, wait);
+
+ spin_lock_irqsave(&ctx->lock, flags);
+ if (ctx->expired)
+ events |= POLLIN;
+ spin_unlock_irqrestore(&ctx->lock, flags);
+
+ return events;
+}
+
+static ssize_t timerfd_read(struct file *file, char __user *buf, size_t count,
+ loff_t *ppos)
+{
+ struct timerfd_ctx *ctx = file->private_data;
+ ssize_t res;
+ u32 ticks = 0;
+ DECLARE_WAITQUEUE(wait, current);
+
+ if (count < sizeof(ticks))
+ return -EINVAL;
+ spin_lock_irq(&ctx->lock);
+ res = -EAGAIN;
+ if (!ctx->expired && !(file->f_flags & O_NONBLOCK)) {
+ __add_wait_queue(&ctx->wqh, &wait);
+ for (res = 0;;) {
+ set_current_state(TASK_INTERRUPTIBLE);
+ if (ctx->expired) {
+ res = 0;
+ break;
+ }
+ if (signal_pending(current)) {
+ res = -ERESTARTSYS;
+ break;
+ }
+ spin_unlock_irq(&ctx->lock);
+ schedule();
+ spin_lock_irq(&ctx->lock);
+ }
+ __remove_wait_queue(&ctx->wqh, &wait);
+ __set_current_state(TASK_RUNNING);
+ }
+ if (ctx->expired) {
+ ctx->expired = 0;
+ if (ctx->tintv.tv64 != 0) {
+ /*
+ * If tintv.tv64 != 0, this is a periodic timer that
+ * needs to be re-armed. We avoid doing it in the timer
+ * callback to avoid DoS attacks specifying a very
+ * short timer period.
+ */
+ ticks = (u32)
+ hrtimer_forward(&ctx->tmr,
+ hrtimer_cb_get_time(&ctx->tmr),
+ ctx->tintv);
+ hrtimer_restart(&ctx->tmr);
+ } else
+ ticks = 1;
+ }
+ spin_unlock_irq(&ctx->lock);
+ if (ticks)
+ res = put_user(ticks, buf) ? -EFAULT: sizeof(ticks);
+ return res;
+}
+
+static const struct file_operations timerfd_fops = {
+ .release = timerfd_release,
+ .poll = timerfd_poll,
+ .read = timerfd_read,
+};
+
+asmlinkage long sys_timerfd(int ufd, int clockid, int flags,
+ const struct itimerspec __user *utmr)
+{
+ int error;
+ struct timerfd_ctx *ctx;
+ struct file *file;
+ struct inode *inode;
+ struct itimerspec ktmr;
+
+ if (copy_from_user(&ktmr, utmr, sizeof(ktmr)))
+ return -EFAULT;
+
+ if (clockid != CLOCK_MONOTONIC &&
+ clockid != CLOCK_REALTIME)
+ return -EINVAL;
+ if (!timespec_valid(&ktmr.it_value) ||
+ !timespec_valid(&ktmr.it_interval))
+ return -EINVAL;
+
+ if (ufd == -1) {
+ ctx = kmalloc(sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ init_waitqueue_head(&ctx->wqh);
+ spin_lock_init(&ctx->lock);
+
+ timerfd_setup(ctx, clockid, flags, &ktmr);
+
+ /*
+ * When we call this, the initialization must be complete, since
+ * anon_inode_getfd() will install the fd.
+ */
+ error = anon_inode_getfd(&ufd, &inode, &file, "[timerfd]",
+ &timerfd_fops, ctx);
+ if (error)
+ goto err_tmrcancel;
+ } else {
+ file = fget(ufd);
+ if (!file)
+ return -EBADF;
+ ctx = file->private_data;
+ if (file->f_op != &timerfd_fops) {
+ fput(file);
+ return -EINVAL;
+ }
+ /*
+ * We need to stop the existing timer before reprogramming
+ * it to the new values.
+ */
+ for (;;) {
+ spin_lock_irq(&ctx->lock);
+ if (hrtimer_try_to_cancel(&ctx->tmr) >= 0)
+ break;
+ spin_unlock_irq(&ctx->lock);
+ cpu_relax();
+ }
+ /*
+ * Re-program the timer to the new value ...
+ */
+ timerfd_setup(ctx, clockid, flags, &ktmr);
+
+ spin_unlock_irq(&ctx->lock);
+ fput(file);
+ }
+
+ return ufd;
+
+err_tmrcancel:
+ hrtimer_cancel(&ctx->tmr);
+ kfree(ctx);
+ return error;
+}
+
-#ifndef __ALPHA_POLL_H
-#define __ALPHA_POLL_H
-
-#define POLLIN (1 << 0)
-#define POLLPRI (1 << 1)
-#define POLLOUT (1 << 2)
-#define POLLERR (1 << 3)
-#define POLLHUP (1 << 4)
-#define POLLNVAL (1 << 5)
-#define POLLRDNORM (1 << 6)
-#define POLLRDBAND (1 << 7)
-#define POLLWRNORM (1 << 8)
-#define POLLWRBAND (1 << 9)
-#define POLLMSG (1 << 10)
-#define POLLREMOVE (1 << 12)
-#define POLLRDHUP (1 << 13)
-
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif
+#include <asm-generic/poll.h>
-#ifndef __ASMARM_POLL_H
-#define __ASMARM_POLL_H
-
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif
+#include <asm-generic/poll.h>
#ifndef __ASMARM_POLL_H
#define __ASMARM_POLL_H
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
+#include <asm-generic/poll.h>
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#undef POLLREMOVE
#endif
-#ifndef __ASM_AVR32_POLL_H
-#define __ASM_AVR32_POLL_H
-
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif /* __ASM_AVR32_POLL_H */
+#include <asm-generic/poll.h>
-#ifndef __ASM_CRIS_POLL_H
-#define __ASM_CRIS_POLL_H
-
-/* taken from asm-alpha */
-
-#define POLLIN 1
-#define POLLPRI 2
-#define POLLOUT 4
-#define POLLERR 8
-#define POLLHUP 16
-#define POLLNVAL 32
-#define POLLRDNORM 64
-#define POLLRDBAND 128
-#define POLLWRNORM 256
-#define POLLWRBAND 512
-#define POLLMSG 1024
-#define POLLREMOVE 4096
-#define POLLRDHUP 8192
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif
+#include <asm-generic/poll.h>
#ifndef _ASM_POLL_H
#define _ASM_POLL_H
-#define POLLIN 1
-#define POLLPRI 2
-#define POLLOUT 4
-#define POLLERR 8
-#define POLLHUP 16
-#define POLLNVAL 32
-#define POLLRDNORM 64
#define POLLWRNORM POLLOUT
-#define POLLRDBAND 128
#define POLLWRBAND 256
-#define POLLMSG 0x0400
-#define POLLRDHUP 0x2000
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#include <asm-generic/poll.h>
+
+#undef POLLREMOVE
#endif
header-y += ioctl.h
header-y += ipc.h
header-y += mman.h
+header-y += poll.h
header-y += signal.h
header-y += statfs.h
--- /dev/null
+#ifndef __ASM_GENERIC_POLL_H
+#define __ASM_GENERIC_POLL_H
+
+/* These are specified by iBCS2 */
+#define POLLIN 0x0001
+#define POLLPRI 0x0002
+#define POLLOUT 0x0004
+#define POLLERR 0x0008
+#define POLLHUP 0x0010
+#define POLLNVAL 0x0020
+
+/* The rest seem to be more-or-less nonstandard. Check them! */
+#define POLLRDNORM 0x0040
+#define POLLRDBAND 0x0080
+#ifndef POLLWRNORM
+#define POLLWRNORM 0x0100
+#endif
+#ifndef POLLWRBAND
+#define POLLWRBAND 0x0200
+#endif
+#ifndef POLLMSG
+#define POLLMSG 0x0400
+#endif
+#ifndef POLLREMOVE
+#define POLLREMOVE 0x1000
+#endif
+#ifndef POLLRDHUP
+#define POLLRDHUP 0x2000
+#endif
+
+struct pollfd {
+ int fd;
+ short events;
+ short revents;
+};
+
+#endif /* __ASM_GENERIC_POLL_H */
#ifndef __H8300_POLL_H
#define __H8300_POLL_H
-#define POLLIN 1
-#define POLLPRI 2
-#define POLLOUT 4
-#define POLLERR 8
-#define POLLHUP 16
-#define POLLNVAL 32
-#define POLLRDNORM 64
#define POLLWRNORM POLLOUT
-#define POLLRDBAND 128
#define POLLWRBAND 256
-#define POLLMSG 0x0400
-#define POLLRDHUP 0x2000
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#include <asm-generic/poll.h>
+
+#undef POLLREMOVE
#endif
#define __NR_time 13
#define __NR_mknod 14
#define __NR_chmod 15
-#define __NR_chown 16
+#define __NR_lchown 16
#define __NR_break 17
#define __NR_oldstat 18
#define __NR_lseek 19
#define __NR_lstat 107
#define __NR_fstat 108
#define __NR_olduname 109
-#define __NR_iopl /* 110 */ not supported
+#define __NR_iopl 110
#define __NR_vhangup 111
-#define __NR_idle /* 112 */ Obsolete
-#define __NR_vm86 /* 113 */ not supported
+#define __NR_idle 112
+#define __NR_vm86old 113
#define __NR_wait4 114
#define __NR_swapoff 115
#define __NR_sysinfo 116
#define __NR_clone 120
#define __NR_setdomainname 121
#define __NR_uname 122
-#define __NR_cacheflush 123
+#define __NR_modify_ldt 123
#define __NR_adjtimex 124
#define __NR_mprotect 125
#define __NR_sigprocmask 126
#define __NR_mremap 163
#define __NR_setresuid 164
#define __NR_getresuid 165
-#define __NR_getpagesize 166
+#define __NR_vm86 166
#define __NR_query_module 167
#define __NR_poll 168
#define __NR_nfsservctl 169
#define __NR_rt_sigsuspend 179
#define __NR_pread64 180
#define __NR_pwrite64 181
-#define __NR_lchown 182
+#define __NR_chown 182
#define __NR_getcwd 183
#define __NR_capget 184
#define __NR_capset 185
#define __NR_stat64 195
#define __NR_lstat64 196
#define __NR_fstat64 197
-#define __NR_chown32 198
+#define __NR_lchown32 198
#define __NR_getuid32 199
#define __NR_getgid32 200
#define __NR_geteuid32 201
#define __NR_getresuid32 209
#define __NR_setresgid32 210
#define __NR_getresgid32 211
-#define __NR_lchown32 212
+#define __NR_chown32 212
#define __NR_setuid32 213
#define __NR_setgid32 214
#define __NR_setfsuid32 215
#define __NR_setfsgid32 216
#define __NR_pivot_root 217
+#define __NR_mincore 218
+#define __NR_madvise 219
+#define __NR_madvise1 219
#define __NR_getdents64 220
#define __NR_fcntl64 221
-#define __NR_security 223
+/* 223 is unused */
#define __NR_gettid 224
#define __NR_readahead 225
#define __NR_setxattr 226
#define __NR_io_getevents 247
#define __NR_io_submit 248
#define __NR_io_cancel 249
-#define __NR_alloc_hugepages 250
-#define __NR_free_hugepages 251
+#define __NR_fadvise64 250
+/* 251 is available for reuse (was briefly sys_set_zone_reclaim) */
#define __NR_exit_group 252
#define __NR_lookup_dcookie 253
-#define __NR_sys_epoll_create 254
-#define __NR_sys_epoll_ctl 255
-#define __NR_sys_epoll_wait 256
+#define __NR_epoll_create 254
+#define __NR_epoll_ctl 255
+#define __NR_epoll_wait 256
#define __NR_remap_file_pages 257
#define __NR_set_tid_address 258
#define __NR_timer_create 259
#define __NR_add_key 286
#define __NR_request_key 287
#define __NR_keyctl 288
+#define __NR_ioprio_set 289
+#define __NR_ioprio_get 290
+#define __NR_inotify_init 291
+#define __NR_inotify_add_watch 292
+#define __NR_inotify_rm_watch 293
+#define __NR_migrate_pages 294
+#define __NR_openat 295
+#define __NR_mkdirat 296
+#define __NR_mknodat 297
+#define __NR_fchownat 298
+#define __NR_futimesat 299
+#define __NR_fstatat64 300
+#define __NR_unlinkat 301
+#define __NR_renameat 302
+#define __NR_linkat 303
+#define __NR_symlinkat 304
+#define __NR_readlinkat 305
+#define __NR_fchmodat 306
+#define __NR_faccessat 307
+#define __NR_pselect6 308
+#define __NR_ppoll 309
+#define __NR_unshare 310
+#define __NR_set_robust_list 311
+#define __NR_get_robust_list 312
+#define __NR_splice 313
+#define __NR_sync_file_range 314
+#define __NR_tee 315
+#define __NR_vmsplice 316
+#define __NR_move_pages 317
+#define __NR_getcpu 318
+#define __NR_epoll_pwait 319
#ifdef __KERNEL__
-#define NR_syscalls 289
+#define NR_syscalls 320
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
"663:\n\t" newinstr "\n664:\n" /* replacement */ \
".previous" : output : [feat] "i" (feature), ##input)
+/*
+ * use this macro(s) if you need more than one output parameter
+ * in alternative_io
+ */
+#define ASM_OUTPUT2(a, b) a, b
+
/*
* Alternative inline assembly for SMP.
*
-#ifndef __i386_POLL_H
-#define __i386_POLL_H
-
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif
+#include <asm-generic/poll.h>
static __always_inline cycles_t get_cycles_sync(void)
{
unsigned long long ret;
- unsigned eax;
+ unsigned eax, edx;
/*
* Use RDTSCP if possible; it is guaranteed to be synchronous
* and doesn't cause a VMEXIT on Hypervisors
*/
alternative_io(ASM_NOP3, ".byte 0x0f,0x01,0xf9", X86_FEATURE_RDTSCP,
- "=A" (ret), "0" (0ULL) : "ecx", "memory");
+ ASM_OUTPUT2("=a" (eax), "=d" (edx)),
+ "a" (0U), "d" (0U) : "ecx", "memory");
+ ret = (((unsigned long long)edx) << 32) | ((unsigned long long)eax);
if (ret)
return ret;
#define __NR_getcpu 318
#define __NR_epoll_pwait 319
#define __NR_utimensat 320
+#define __NR_signalfd 321
+#define __NR_timerfd 322
+#define __NR_eventfd 323
#ifdef __KERNEL__
-#define NR_syscalls 321
+#define NR_syscalls 324
#define __ARCH_WANT_IPC_PARSE_VERSION
#define __ARCH_WANT_OLD_READDIR
-#ifndef _ASM_IA64_POLL_H
-#define _ASM_IA64_POLL_H
-
-/*
- * poll(2) bit definitions. Based on <asm-i386/poll.h>.
- *
- * Modified 1998, 1999, 2002
- * David Mosberger-Tang <davidm@hpl.hp.com>, Hewlett-Packard Co
- */
-
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif /* _ASM_IA64_POLL_H */
+#include <asm-generic/poll.h>
#define pfn_pmd(pfn, prot) __pmd(((pfn) << PAGE_SHIFT) | pgprot_val(prot))
#define PTE_FILE_MAX_BITS 29
-#define pte_to_pgoff(pte) (((pte_val(pte) >> 2) & 0xef) | (((pte_val(pte) >> 10)) << 7))
-#define pgoff_to_pte(off) ((pte_t) { (((off) & 0xef) << 2) | (((off) >> 7) << 10) | _PAGE_FILE })
+#define pte_to_pgoff(pte) (((pte_val(pte) >> 2) & 0x7f) | (((pte_val(pte) >> 10)) << 7))
+#define pgoff_to_pte(off) ((pte_t) { (((off) & 0x7f) << 2) | (((off) >> 7) << 10) | _PAGE_FILE })
#endif /* __KERNEL__ */
#endif /* _ASM_M32R_PGTABLE_2LEVEL_H */
#define pte_unmap_nested(pte) do { } while (0)
/* Encode and de-code a swap entry */
-#define __swp_type(x) (((x).val >> 2) & 0x3f)
+#define __swp_type(x) (((x).val >> 2) & 0x1f)
#define __swp_offset(x) ((x).val >> 10)
#define __swp_entry(type, offset) \
((swp_entry_t) { ((type) << 2) | ((offset) << 10) })
-#ifndef _ASM_M32R_POLL_H
-#define _ASM_M32R_POLL_H
-
-/*
- * poll(2) bit definitions. Based on <asm-i386/poll.h>.
- *
- * Modified 2004
- * Hirokazu Takata <takata at linux-m32r.org>
- */
-
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif /* _ASM_M32R_POLL_H */
+#include <asm-generic/poll.h>
* `next' and `prev' should be struct task_struct, but it isn't always defined
*/
+#if defined(CONFIG_FRAME_POINTER) || \
+ !defined(CONFIG_SCHED_NO_NO_OMIT_FRAME_POINTER)
+#define M32R_PUSH_FP " push fp\n"
+#define M32R_POP_FP " pop fp\n"
+#else
+#define M32R_PUSH_FP ""
+#define M32R_POP_FP ""
+#endif
+
#define switch_to(prev, next, last) do { \
__asm__ __volatile__ ( \
" seth lr, #high(1f) \n" \
" or3 lr, lr, #low(1f) \n" \
" st lr, @%4 ; store old LR \n" \
" ld lr, @%5 ; load new LR \n" \
+ M32R_PUSH_FP \
" st sp, @%2 ; store old SP \n" \
" ld sp, @%3 ; load new SP \n" \
" push %1 ; store `prev' on new stack \n" \
" .fillinsn \n" \
"1: \n" \
" pop %0 ; restore `__last' from new stack \n" \
+ M32R_POP_FP \
: "=r" (last) \
: "0" (prev), \
"r" (&(prev->thread.sp)), "r" (&(next->thread.sp)), \
#ifndef __m68k_POLL_H
#define __m68k_POLL_H
-#define POLLIN 1
-#define POLLPRI 2
-#define POLLOUT 4
-#define POLLERR 8
-#define POLLHUP 16
-#define POLLNVAL 32
-#define POLLRDNORM 64
#define POLLWRNORM POLLOUT
-#define POLLRDBAND 128
#define POLLWRBAND 256
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#include <asm-generic/poll.h>
#endif
#ifndef __ASM_POLL_H
#define __ASM_POLL_H
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
#define POLLWRNORM POLLOUT
#define POLLWRBAND 0x0100
-/* These seem to be more or less nonstandard ... */
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#include <asm-generic/poll.h>
#endif /* __ASM_POLL_H */
-#ifndef __PARISC_POLL_H
-#define __PARISC_POLL_H
-
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif
+#include <asm-generic/poll.h>
#define irqs_disabled() (local_get_flags() == 0)
-#define hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1)
-#define hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1)
+#define __hard_irq_enable() __mtmsrd(mfmsr() | MSR_EE, 1)
+#define __hard_irq_disable() __mtmsrd(mfmsr() & ~MSR_EE, 1)
+
+#define hard_irq_disable() \
+ do { \
+ __hard_irq_disable(); \
+ get_paca()->soft_enabled = 0; \
+ get_paca()->hard_enabled = 0; \
+ } while(0)
#else
-#ifndef _ASM_POWERPC_POLL_H
-#define _ASM_POWERPC_POLL_H
-
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif /* _ASM_POWERPC_POLL_H */
+#include <asm-generic/poll.h>
-/*
- * include/asm-s390/poll.h
- *
- * S390 version
- *
- * Derived from "include/asm-i386/poll.h"
- */
-
-#ifndef __S390_POLL_H
-#define __S390_POLL_H
-
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif
+#include <asm-generic/poll.h>
-#ifndef __ASM_SH_POLL_H
-#define __ASM_SH_POLL_H
-
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif /* __ASM_SH_POLL_H */
+#include <asm-generic/poll.h>
#ifndef __ASM_SH64_POLL_H
#define __ASM_SH64_POLL_H
-/*
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file "COPYING" in the main directory of this archive
- * for more details.
- *
- * include/asm-sh64/poll.h
- *
- * Copyright (C) 2000, 2001 Paolo Alberelli
- *
- */
+#include <asm-generic/poll.h>
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#undef POLLREMOVE
#endif /* __ASM_SH64_POLL_H */
#ifndef __SPARC_POLL_H
#define __SPARC_POLL_H
-#define POLLIN 1
-#define POLLPRI 2
-#define POLLOUT 4
-#define POLLERR 8
-#define POLLHUP 16
-#define POLLNVAL 32
-#define POLLRDNORM 64
#define POLLWRNORM POLLOUT
-#define POLLRDBAND 128
#define POLLWRBAND 256
#define POLLMSG 512
#define POLLREMOVE 1024
#define POLLRDHUP 2048
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#include <asm-generic/poll.h>
#endif
#ifndef __SPARC64_POLL_H
#define __SPARC64_POLL_H
-#define POLLIN 1
-#define POLLPRI 2
-#define POLLOUT 4
-#define POLLERR 8
-#define POLLHUP 16
-#define POLLNVAL 32
-#define POLLRDNORM 64
#define POLLWRNORM POLLOUT
-#define POLLRDBAND 128
#define POLLWRBAND 256
#define POLLMSG 512
#define POLLREMOVE 1024
#define POLLRDHUP 2048
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#include <asm-generic/poll.h>
#endif
0-0xBFFFFFFF for user
0-0xFFFFFFFF for kernel */
struct restart_block restart_block;
+ struct thread_info *real_thread; /* Points to non-IRQ stack */
};
#define INIT_THREAD_INFO(tsk) \
.restart_block = { \
.fn = do_no_restart_syscall, \
}, \
+ .real_thread = NULL, \
}
#define init_thread_info (init_thread_union.thread_info)
#ifndef __V850_POLL_H__
#define __V850_POLL_H__
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-#define POLLRDNORM 0x0040
#define POLLWRNORM POLLOUT
-#define POLLRDBAND 0x0080
#define POLLWRBAND 0x0100
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#include <asm-generic/poll.h>
#endif /* __V850_POLL_H__ */
"663:\n\t" newinstr "\n664:\n" /* replacement */ \
".previous" : output : [feat] "i" (feature), ##input)
+/*
+ * use this macro(s) if you need more than one output parameter
+ * in alternative_io
+ */
+#define ASM_OUTPUT2(a, b) a, b
+
/*
* Alternative inline assembly for SMP.
*
#define __PHYSICAL_START CONFIG_PHYSICAL_START
#define __KERNEL_ALIGN 0x200000
+/*
+ * Make sure kernel is aligned to 2MB address. Catching it at compile
+ * time is better. Change your config file and compile the kernel
+ * for a 2MB aligned address (CONFIG_PHYSICAL_START)
+ */
+#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
+#error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
+#endif
+
#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START)
#define __START_KERNEL_map _AC(0xffffffff80000000, UL)
#define __PAGE_OFFSET _AC(0xffff810000000000, UL)
-#ifndef __x86_64_POLL_H
-#define __x86_64_POLL_H
-
-/* These are specified by iBCS2 */
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-/* The rest seem to be more-or-less nonstandard. Check them! */
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
-#define POLLWRNORM 0x0100
-#define POLLWRBAND 0x0200
-#define POLLMSG 0x0400
-#define POLLREMOVE 0x1000
-#define POLLRDHUP 0x2000
-
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
-
-#endif
+#include <asm-generic/poll.h>
__SYSCALL(__NR_move_pages, sys_move_pages)
#define __NR_utimensat 280
__SYSCALL(__NR_utimensat, sys_utimensat)
+#define __IGNORE_getcpu /* implemented as a vsyscall */
+#define __NR_epoll_pwait 281
+__SYSCALL(__NR_epoll_pwait, sys_epoll_pwait)
+#define __NR_signalfd 282
+__SYSCALL(__NR_signalfd, sys_signalfd)
+#define __NR_timerfd 282
+__SYSCALL(__NR_timerfd, sys_timerfd)
+#define __NR_eventfd 283
+__SYSCALL(__NR_eventfd, sys_eventfd)
#ifndef __NO_STUBS
#define __ARCH_WANT_OLD_READDIR
#ifndef _XTENSA_POLL_H
#define _XTENSA_POLL_H
-
-#define POLLIN 0x0001
-#define POLLPRI 0x0002
-#define POLLOUT 0x0004
-
-#define POLLERR 0x0008
-#define POLLHUP 0x0010
-#define POLLNVAL 0x0020
-
-#define POLLRDNORM 0x0040
-#define POLLRDBAND 0x0080
#define POLLWRNORM POLLOUT
#define POLLWRBAND 0x0100
-
-#define POLLMSG 0x0400
#define POLLREMOVE 0x0800
-#define POLLRDHUP 0x2000
-struct pollfd {
- int fd;
- short events;
- short revents;
-};
+#include <asm-generic/poll.h>
#endif /* _XTENSA_POLL_H */
header-y += sockios.h
header-y += som.h
header-y += sound.h
-header-y += synclink.h
header-y += taskstats.h
header-y += telephony.h
header-y += termios.h
unifdef-y += errqueue.h
unifdef-y += ethtool.h
unifdef-y += eventpoll.h
+unifdef-y += signalfd.h
unifdef-y += ext2_fs.h
unifdef-y += ext3_fs.h
unifdef-y += fb.h
unifdef-y += soundcard.h
unifdef-y += stat.h
unifdef-y += stddef.h
+unifdef-y += synclink.h
unifdef-y += sysctl.h
unifdef-y += tcp.h
unifdef-y += time.h
struct list_head ki_list; /* the aio core uses this
* for cancellation */
+
+ /*
+ * If the aio_resfd field of the userspace iocb is not zero,
+ * this is the underlying file* to deliver event to.
+ */
+ struct file *ki_eventfd;
};
#define is_sync_kiocb(iocb) ((iocb)->ki_key == KIOCB_SYNC_KEY)
IOCB_CMD_PWRITEV = 8,
};
+/*
+ * Valid flags for the "aio_flags" member of the "struct iocb".
+ *
+ * IOCB_FLAG_RESFD - Set if the "aio_resfd" member of the "struct iocb"
+ * is valid.
+ */
+#define IOCB_FLAG_RESFD (1 << 0)
+
/* read() from /dev/aio returns these structures. */
struct io_event {
__u64 data; /* the data field from the iocb */
/* extra parameters */
__u64 aio_reserved2; /* TODO: use this for a (struct sigevent *) */
- __u64 aio_reserved3;
+
+ /* flags for the "struct iocb" */
+ __u32 aio_flags;
+
+ /*
+ * if the IOCB_FLAG_RESFD flag of "aio_flags" is set, this is an
+ * eventfd to signal AIO readiness to
+ */
+ __u32 aio_resfd;
}; /* 64 bytes */
#undef IFBIG
--- /dev/null
+/*
+ * include/linux/anon_inodes.h
+ *
+ * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#ifndef _LINUX_ANON_INODES_H
+#define _LINUX_ANON_INODES_H
+
+int anon_inode_getfd(int *pfd, struct inode **pinode, struct file **pfile,
+ const char *name, const struct file_operations *fops,
+ void *priv);
+
+#endif /* _LINUX_ANON_INODES_H */
+
return lhs->tv_nsec - rhs->tv_nsec;
}
+extern int get_compat_itimerspec(struct itimerspec *dst,
+ const struct compat_itimerspec __user *src);
+extern int put_compat_itimerspec(struct compat_itimerspec __user *dst,
+ const struct itimerspec *src);
+
asmlinkage long compat_sys_adjtimex(struct compat_timex __user *utp);
extern int compat_printk(const char *fmt, ...);
--- /dev/null
+/*
+ * include/linux/eventfd.h
+ *
+ * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#ifndef _LINUX_EVENTFD_H
+#define _LINUX_EVENTFD_H
+
+
+#ifdef __KERNEL__
+
+#ifdef CONFIG_EVENTFD
+
+struct file *eventfd_fget(int fd);
+int eventfd_signal(struct file *file, int n);
+
+#else /* CONFIG_EVENTFD */
+
+#define eventfd_fget(fd) ERR_PTR(-ENOSYS)
+#define eventfd_signal(f, n) 0
+
+#endif /* CONFIG_EVENTFD */
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_EVENTFD_H */
+
.posix_timers = LIST_HEAD_INIT(sig.posix_timers), \
.cpu_timers = INIT_CPU_TIMERS(sig.cpu_timers), \
.rlim = INIT_RLIMITS, \
- .pgrp = 1, \
+ .pgrp = 0, \
.tty_old_pgrp = NULL, \
- { .__session = 1}, \
+ { .__session = 0}, \
}
extern struct nsproxy init_nsproxy;
.count = ATOMIC_INIT(1), \
.action = { { { .sa_handler = NULL, } }, }, \
.siglock = __SPIN_LOCK_UNLOCKED(sighand.siglock), \
+ .signalfd_list = LIST_HEAD_INIT(sighand.signalfd_list), \
}
extern struct group_info init_groups;
+#define INIT_STRUCT_PID { \
+ .count = ATOMIC_INIT(1), \
+ .nr = 0, \
+ /* Don't put this struct pid in pid_hash */ \
+ .pid_chain = { .next = NULL, .pprev = NULL }, \
+ .tasks = { \
+ { .first = &init_task.pids[PIDTYPE_PID].node }, \
+ { .first = &init_task.pids[PIDTYPE_PGID].node }, \
+ { .first = &init_task.pids[PIDTYPE_SID].node }, \
+ }, \
+ .rcu = RCU_HEAD_INIT, \
+}
+
+#define INIT_PID_LINK(type) \
+{ \
+ .node = { \
+ .next = NULL, \
+ .pprev = &init_struct_pid.tasks[type].first, \
+ }, \
+ .pid = &init_struct_pid, \
+}
+
/*
* INIT_TASK is used to set up the first task table, touch at
* your own risk!. Base=0, limit=0x1fffff (=2MB)
.cpu_timers = INIT_CPU_TIMERS(tsk.cpu_timers), \
.fs_excl = ATOMIC_INIT(0), \
.pi_lock = __SPIN_LOCK_UNLOCKED(tsk.pi_lock), \
+ .pids = { \
+ [PIDTYPE_PID] = INIT_PID_LINK(PIDTYPE_PID), \
+ [PIDTYPE_PGID] = INIT_PID_LINK(PIDTYPE_PGID), \
+ [PIDTYPE_SID] = INIT_PID_LINK(PIDTYPE_SID), \
+ }, \
INIT_TRACE_IRQFLAGS \
INIT_LOCKDEP \
}
#define save_and_cli(x) save_and_cli(&x)
#endif /* CONFIG_SMP */
+/* Some architectures might implement lazy enabling/disabling of
+ * interrupts. In some cases, such as stop_machine, we might want
+ * to ensure that after a local_irq_disable(), interrupts have
+ * really been disabled in hardware. Such architectures need to
+ * implement the following hook.
+ */
+#ifndef hard_irq_disable
+#define hard_irq_disable() do { } while(0)
+#endif
+
/* PLEASE, avoid to allocate new softirqs, if you need not _really_ high
frequency threaded job scheduling. For almost all the purposes
tasklets are more than enough. F.e. all serial device BHs et
extern void dump_stack(void);
+enum {
+ DUMP_PREFIX_NONE,
+ DUMP_PREFIX_ADDRESS,
+ DUMP_PREFIX_OFFSET
+};
+extern void hex_dump_to_buffer(const void *buf, size_t len, char *linebuf,
+ size_t linebuflen);
+extern void print_hex_dump(const char *level, int prefix_type,
+ void *buf, size_t len);
+#define hex_asc(x) "0123456789abcdef"[x]
+
#ifdef DEBUG
/* If you are writing a driver, please use dev_dbg instead */
#define pr_debug(fmt,arg...) \
#define ISOFS_SUPER_MAGIC 0x9660
#define JFFS2_SUPER_MAGIC 0x72b6
#define KVMFS_SUPER_MAGIC 0x19700426
+#define ANON_INODE_FS_MAGIC 0x09041934
#define MINIX_SUPER_MAGIC 0x137F /* original minix fs */
#define MINIX_SUPER_MAGIC2 0x138F /* minix fs, 30 char names */
*/
#define MODULE_LICENSE(_license) MODULE_INFO(license, _license)
-/* Author, ideally of form NAME <EMAIL>[, NAME <EMAIL>]*[ and NAME <EMAIL>] */
+/* Author, ideally of form NAME[, NAME]*[ and NAME] */
#define MODULE_AUTHOR(_author) MODULE_INFO(author, _author)
/* What your module does. */
#ifdef CONFIG_BLOCK
struct writeback_control;
-typedef int (writepage_t)(struct page *page, struct writeback_control *wbc);
int mpage_readpages(struct address_space *mapping, struct list_head *pages,
unsigned nr_pages, get_block_t get_block);
struct rcu_head rcu;
};
+extern struct pid init_struct_pid;
+
struct pid_link
{
struct hlist_node node;
* write-held.
*/
extern int FASTCALL(attach_pid(struct task_struct *task,
- enum pid_type type, int nr));
-
+ enum pid_type type, struct pid *pid));
extern void FASTCALL(detach_pid(struct task_struct *task, enum pid_type));
extern void FASTCALL(transfer_pid(struct task_struct *old,
struct task_struct *new, enum pid_type));
atomic_t count;
struct k_sigaction action[_NSIG];
spinlock_t siglock;
+ struct list_head signalfd_list;
};
struct pacct_struct {
cputime_t utime, stime, cutime, cstime;
unsigned long nvcsw, nivcsw, cnvcsw, cnivcsw;
unsigned long min_flt, maj_flt, cmin_flt, cmaj_flt;
+ unsigned long inblock, oublock, cinblock, coublock;
/*
* Cumulative ns of scheduled CPU time for dead threads in the
return sig <= _NSIG ? 1 : 0;
}
+extern int next_signal(struct sigpending *pending, sigset_t *mask);
extern int group_send_sig_info(int sig, struct siginfo *info, struct task_struct *p);
extern int __group_send_sig_info(int, struct siginfo *, struct task_struct *);
extern long do_sigpending(void __user *, unsigned long);
--- /dev/null
+/*
+ * include/linux/signalfd.h
+ *
+ * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#ifndef _LINUX_SIGNALFD_H
+#define _LINUX_SIGNALFD_H
+
+
+struct signalfd_siginfo {
+ __u32 signo;
+ __s32 err;
+ __s32 code;
+ __u32 pid;
+ __u32 uid;
+ __s32 fd;
+ __u32 tid;
+ __u32 band;
+ __u32 overrun;
+ __u32 trapno;
+ __s32 status;
+ __s32 svint;
+ __u64 svptr;
+ __u64 utime;
+ __u64 stime;
+ __u64 addr;
+
+ /*
+ * Pad strcture to 128 bytes. Remember to update the
+ * pad size when you add new memebers. We use a fixed
+ * size structure to avoid compatibility problems with
+ * future versions, and we leave extra space for additional
+ * members. We use fixed size members because this strcture
+ * comes out of a read(2) and we really don't want to have
+ * a compat on read(2).
+ */
+ __u8 __pad[48];
+};
+
+
+#ifdef __KERNEL__
+
+#ifdef CONFIG_SIGNALFD
+
+/*
+ * Deliver the signal to listening signalfd. This must be called
+ * with the sighand lock held. Same are the following that end up
+ * calling signalfd_deliver().
+ */
+void signalfd_deliver(struct task_struct *tsk, int sig);
+
+/*
+ * No need to fall inside signalfd_deliver() if no signal listeners
+ * are available.
+ */
+static inline void signalfd_notify(struct task_struct *tsk, int sig)
+{
+ if (unlikely(!list_empty(&tsk->sighand->signalfd_list)))
+ signalfd_deliver(tsk, sig);
+}
+
+/*
+ * The signal -1 is used to notify the signalfd that the sighand
+ * is on its way to be detached.
+ */
+static inline void signalfd_detach_locked(struct task_struct *tsk)
+{
+ if (unlikely(!list_empty(&tsk->sighand->signalfd_list)))
+ signalfd_deliver(tsk, -1);
+}
+
+static inline void signalfd_detach(struct task_struct *tsk)
+{
+ struct sighand_struct *sighand = tsk->sighand;
+
+ if (unlikely(!list_empty(&sighand->signalfd_list))) {
+ spin_lock_irq(&sighand->siglock);
+ signalfd_deliver(tsk, -1);
+ spin_unlock_irq(&sighand->siglock);
+ }
+}
+
+#else /* CONFIG_SIGNALFD */
+
+#define signalfd_deliver(t, s) do { } while (0)
+#define signalfd_notify(t, s) do { } while (0)
+#define signalfd_detach_locked(t) do { } while (0)
+#define signalfd_detach(t) do { } while (0)
+
+#endif /* CONFIG_SIGNALFD */
+
+#endif /* __KERNEL__ */
+
+#endif /* _LINUX_SIGNALFD_H */
+
#define MGSL_IOCGGPIO _IOR(MGSL_MAGIC_IOC,17,struct gpio_desc)
#define MGSL_IOCWAITGPIO _IOWR(MGSL_MAGIC_IOC,18,struct gpio_desc)
+#ifdef __KERNEL__
+/* provide 32 bit ioctl compatibility on 64 bit systems */
+#ifdef CONFIG_COMPAT
+#include <linux/compat.h>
+struct MGSL_PARAMS32 {
+ compat_ulong_t mode;
+ unsigned char loopback;
+ unsigned short flags;
+ unsigned char encoding;
+ compat_ulong_t clock_speed;
+ unsigned char addr_filter;
+ unsigned short crc_type;
+ unsigned char preamble_length;
+ unsigned char preamble;
+ compat_ulong_t data_rate;
+ unsigned char data_bits;
+ unsigned char stop_bits;
+ unsigned char parity;
+};
+#define MGSL_IOCSPARAMS32 _IOW(MGSL_MAGIC_IOC,0,struct MGSL_PARAMS32)
+#define MGSL_IOCGPARAMS32 _IOR(MGSL_MAGIC_IOC,1,struct MGSL_PARAMS32)
+#endif
+#endif
+
#endif /* _SYNCLINK_H_ */
asmlinkage long sys_set_robust_list(struct robust_list_head __user *head,
size_t len);
asmlinkage long sys_getcpu(unsigned __user *cpu, unsigned __user *node, struct getcpu_cache __user *cache);
+asmlinkage long sys_signalfd(int ufd, sigset_t __user *user_mask, size_t sizemask);
+asmlinkage long sys_timerfd(int ufd, int clockid, int flags,
+ const struct itimerspec __user *utmr);
+asmlinkage long sys_eventfd(unsigned int count);
int kernel_execve(const char *filename, char *const argv[], char *const envp[]);
current->ioac.read_bytes += bytes;
}
+/*
+ * We approximate number of blocks, because we account bytes only.
+ * A 'block' is 512 bytes
+ */
+static inline unsigned long task_io_get_inblock(const struct task_struct *p)
+{
+ return p->ioac.read_bytes >> 9;
+}
+
static inline void task_io_account_write(size_t bytes)
{
current->ioac.write_bytes += bytes;
}
+/*
+ * We approximate number of blocks, because we account bytes only.
+ * A 'block' is 512 bytes
+ */
+static inline unsigned long task_io_get_oublock(const struct task_struct *p)
+{
+ return p->ioac.write_bytes >> 9;
+}
+
static inline void task_io_account_cancelled_write(size_t bytes)
{
current->ioac.cancelled_write_bytes += bytes;
{
}
+static inline unsigned long task_io_get_inblock(const struct task_struct *p)
+{
+ return 0;
+}
+
static inline void task_io_account_write(size_t bytes)
{
}
+static inline unsigned long task_io_get_oublock(const struct task_struct *p)
+{
+ return 0;
+}
+
static inline void task_io_account_cancelled_write(size_t bytes)
{
}
--- /dev/null
+/*
+ * include/linux/timerfd.h
+ *
+ * Copyright (C) 2007 Davide Libenzi <davidel@xmailserver.org>
+ *
+ */
+
+#ifndef _LINUX_TIMERFD_H
+#define _LINUX_TIMERFD_H
+
+
+#define TFD_TIMER_ABSTIME (1 << 0)
+
+
+
+#endif /* _LINUX_TIMERFD_H */
+
* This routine allows the tty driver to implement
* device-specific ioctl's. If the ioctl number passed in cmd
* is not recognized by the driver, it should return ENOIOCTLCMD.
+ *
+ * long (*compat_ioctl)(struct tty_struct *tty, struct file * file,
+ * unsigned int cmd, unsigned long arg);
+ *
+ * implement ioctl processing for 32 bit process on 64 bit system
*
* void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
*
int (*chars_in_buffer)(struct tty_struct *tty);
int (*ioctl)(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg);
+ long (*compat_ioctl)(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg);
void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
void (*throttle)(struct tty_struct * tty);
void (*unthrottle)(struct tty_struct * tty);
int (*chars_in_buffer)(struct tty_struct *tty);
int (*ioctl)(struct tty_struct *tty, struct file * file,
unsigned int cmd, unsigned long arg);
+ long (*compat_ioctl)(struct tty_struct *tty, struct file * file,
+ unsigned int cmd, unsigned long arg);
void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
void (*throttle)(struct tty_struct * tty);
void (*unthrottle)(struct tty_struct * tty);
* low-level driver can "grab" an ioctl request before the line
* discpline has a chance to see it.
*
+ * long (*compat_ioctl)(struct tty_struct * tty, struct file * file,
+ * unsigned int cmd, unsigned long arg);
+ *
+ * Process ioctl calls from 32-bit process on 64-bit system
+ *
* void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
*
* This function notifies the line discpline that a change has
const unsigned char * buf, size_t nr);
int (*ioctl)(struct tty_struct * tty, struct file * file,
unsigned int cmd, unsigned long arg);
+ long (*compat_ioctl)(struct tty_struct * tty, struct file * file,
+ unsigned int cmd, unsigned long arg);
void (*set_termios)(struct tty_struct *tty, struct ktermios * old);
unsigned int (*poll)(struct tty_struct *, struct file *,
struct poll_table_struct *);
balance_dirty_pages_ratelimited_nr(mapping, 1);
}
+typedef int (*writepage_t)(struct page *page, struct writeback_control *wbc,
+ void *data);
+
int pdflush_operation(void (*fn)(unsigned long), unsigned long arg0);
-extern int generic_writepages(struct address_space *mapping,
- struct writeback_control *wbc);
+int generic_writepages(struct address_space *mapping,
+ struct writeback_control *wbc);
+int write_cache_pages(struct address_space *mapping,
+ struct writeback_control *wbc, writepage_t writepage,
+ void *data);
int do_writepages(struct address_space *mapping, struct writeback_control *wbc);
int sync_page_range(struct inode *inode, struct address_space *mapping,
loff_t pos, loff_t count);
--- /dev/null
+/*
+ * Header file for AT91/AT32 LCD Controller
+ *
+ * Data structure and register user interface
+ *
+ * Copyright (C) 2007 Atmel Corporation
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#ifndef __ATMEL_LCDC_H__
+#define __ATMEL_LCDC_H__
+
+ /* LCD Controller info data structure */
+struct atmel_lcdfb_info {
+ spinlock_t lock;
+ struct fb_info *info;
+ void __iomem *mmio;
+ unsigned long irq_base;
+
+ unsigned int guard_time;
+ struct platform_device *pdev;
+ struct clk *bus_clk;
+ struct clk *lcdc_clk;
+ unsigned int default_bpp;
+ unsigned int default_lcdcon2;
+ unsigned int default_dmacon;
+ void (*atmel_lcdfb_power_control)(int on);
+ struct fb_monspecs *default_monspecs;
+ u32 pseudo_palette[16];
+};
+
+#define ATMEL_LCDC_DMABADDR1 0x00
+#define ATMEL_LCDC_DMABADDR2 0x04
+#define ATMEL_LCDC_DMAFRMPT1 0x08
+#define ATMEL_LCDC_DMAFRMPT2 0x0c
+#define ATMEL_LCDC_DMAFRMADD1 0x10
+#define ATMEL_LCDC_DMAFRMADD2 0x14
+
+#define ATMEL_LCDC_DMAFRMCFG 0x18
+#define ATMEL_LCDC_FRSIZE (0x7fffff << 0)
+#define ATMEL_LCDC_BLENGTH_OFFSET 24
+#define ATMEL_LCDC_BLENGTH (0x7f << ATMEL_LCDC_BLENGTH_OFFSET)
+
+#define ATMEL_LCDC_DMACON 0x1c
+#define ATMEL_LCDC_DMAEN (0x1 << 0)
+#define ATMEL_LCDC_DMARST (0x1 << 1)
+#define ATMEL_LCDC_DMABUSY (0x1 << 2)
+#define ATMEL_LCDC_DMAUPDT (0x1 << 3)
+#define ATMEL_LCDC_DMA2DEN (0x1 << 4)
+
+#define ATMEL_LCDC_DMA2DCFG 0x20
+#define ATMEL_LCDC_ADDRINC_OFFSET 0
+#define ATMEL_LCDC_ADDRINC (0xffff)
+#define ATMEL_LCDC_PIXELOFF_OFFSET 24
+#define ATMEL_LCDC_PIXELOFF (0x1f << 24)
+
+#define ATMEL_LCDC_LCDCON1 0x0800
+#define ATMEL_LCDC_BYPASS (1 << 0)
+#define ATMEL_LCDC_CLKVAL_OFFSET 12
+#define ATMEL_LCDC_CLKVAL (0x1ff << ATMEL_LCDC_CLKVAL_OFFSET)
+#define ATMEL_LCDC_LINCNT (0x7ff << 21)
+
+#define ATMEL_LCDC_LCDCON2 0x0804
+#define ATMEL_LCDC_DISTYPE (3 << 0)
+#define ATMEL_LCDC_DISTYPE_STNMONO (0 << 0)
+#define ATMEL_LCDC_DISTYPE_STNCOLOR (1 << 0)
+#define ATMEL_LCDC_DISTYPE_TFT (2 << 0)
+#define ATMEL_LCDC_SCANMOD (1 << 2)
+#define ATMEL_LCDC_SCANMOD_SINGLE (0 << 2)
+#define ATMEL_LCDC_SCANMOD_DUAL (1 << 2)
+#define ATMEL_LCDC_IFWIDTH (3 << 3)
+#define ATMEL_LCDC_IFWIDTH_4 (0 << 3)
+#define ATMEL_LCDC_IFWIDTH_8 (1 << 3)
+#define ATMEL_LCDC_IFWIDTH_16 (2 << 3)
+#define ATMEL_LCDC_PIXELSIZE (7 << 5)
+#define ATMEL_LCDC_PIXELSIZE_1 (0 << 5)
+#define ATMEL_LCDC_PIXELSIZE_2 (1 << 5)
+#define ATMEL_LCDC_PIXELSIZE_4 (2 << 5)
+#define ATMEL_LCDC_PIXELSIZE_8 (3 << 5)
+#define ATMEL_LCDC_PIXELSIZE_16 (4 << 5)
+#define ATMEL_LCDC_PIXELSIZE_24 (5 << 5)
+#define ATMEL_LCDC_PIXELSIZE_32 (6 << 5)
+#define ATMEL_LCDC_INVVD (1 << 8)
+#define ATMEL_LCDC_INVVD_NORMAL (0 << 8)
+#define ATMEL_LCDC_INVVD_INVERTED (1 << 8)
+#define ATMEL_LCDC_INVFRAME (1 << 9 )
+#define ATMEL_LCDC_INVFRAME_NORMAL (0 << 9)
+#define ATMEL_LCDC_INVFRAME_INVERTED (1 << 9)
+#define ATMEL_LCDC_INVLINE (1 << 10)
+#define ATMEL_LCDC_INVLINE_NORMAL (0 << 10)
+#define ATMEL_LCDC_INVLINE_INVERTED (1 << 10)
+#define ATMEL_LCDC_INVCLK (1 << 11)
+#define ATMEL_LCDC_INVCLK_NORMAL (0 << 11)
+#define ATMEL_LCDC_INVCLK_INVERTED (1 << 11)
+#define ATMEL_LCDC_INVDVAL (1 << 12)
+#define ATMEL_LCDC_INVDVAL_NORMAL (0 << 12)
+#define ATMEL_LCDC_INVDVAL_INVERTED (1 << 12)
+#define ATMEL_LCDC_CLKMOD (1 << 15)
+#define ATMEL_LCDC_CLKMOD_ACTIVEDISPLAY (0 << 15)
+#define ATMEL_LCDC_CLKMOD_ALWAYSACTIVE (1 << 15)
+#define ATMEL_LCDC_MEMOR (1 << 31)
+#define ATMEL_LCDC_MEMOR_BIG (0 << 31)
+#define ATMEL_LCDC_MEMOR_LITTLE (1 << 31)
+
+#define ATMEL_LCDC_TIM1 0x0808
+#define ATMEL_LCDC_VFP (0xff << 0)
+#define ATMEL_LCDC_VBP_OFFSET 8
+#define ATMEL_LCDC_VBP (0xff << ATMEL_LCDC_VBP_OFFSET)
+#define ATMEL_LCDC_VPW_OFFSET 16
+#define ATMEL_LCDC_VPW (0x3f << ATMEL_LCDC_VPW_OFFSET)
+#define ATMEL_LCDC_VHDLY_OFFSET 24
+#define ATMEL_LCDC_VHDLY (0xf << ATMEL_LCDC_VHDLY_OFFSET)
+
+#define ATMEL_LCDC_TIM2 0x080c
+#define ATMEL_LCDC_HBP (0xff << 0)
+#define ATMEL_LCDC_HPW_OFFSET 8
+#define ATMEL_LCDC_HPW (0x3f << ATMEL_LCDC_HPW_OFFSET)
+#define ATMEL_LCDC_HFP_OFFSET 21
+#define ATMEL_LCDC_HFP (0x7ff << ATMEL_LCDC_HFP_OFFSET)
+
+#define ATMEL_LCDC_LCDFRMCFG 0x0810
+#define ATMEL_LCDC_LINEVAL (0x7ff << 0)
+#define ATMEL_LCDC_HOZVAL_OFFSET 21
+#define ATMEL_LCDC_HOZVAL (0x7ff << ATMEL_LCDC_HOZVAL_OFFSET)
+
+#define ATMEL_LCDC_FIFO 0x0814
+#define ATMEL_LCDC_FIFOTH (0xffff)
+
+#define ATMEL_LCDC_MVAL 0x0818
+
+#define ATMEL_LCDC_DP1_2 0x081c
+#define ATMEL_LCDC_DP4_7 0x0820
+#define ATMEL_LCDC_DP3_5 0x0824
+#define ATMEL_LCDC_DP2_3 0x0828
+#define ATMEL_LCDC_DP5_7 0x082c
+#define ATMEL_LCDC_DP3_4 0x0830
+#define ATMEL_LCDC_DP4_5 0x0834
+#define ATMEL_LCDC_DP6_7 0x0838
+#define ATMEL_LCDC_DP1_2_VAL (0xff)
+#define ATMEL_LCDC_DP4_7_VAL (0xfffffff)
+#define ATMEL_LCDC_DP3_5_VAL (0xfffff)
+#define ATMEL_LCDC_DP2_3_VAL (0xfff)
+#define ATMEL_LCDC_DP5_7_VAL (0xfffffff)
+#define ATMEL_LCDC_DP3_4_VAL (0xffff)
+#define ATMEL_LCDC_DP4_5_VAL (0xfffff)
+#define ATMEL_LCDC_DP6_7_VAL (0xfffffff)
+
+#define ATMEL_LCDC_PWRCON 0x083c
+#define ATMEL_LCDC_PWR (1 << 0)
+#define ATMEL_LCDC_GUARDT_OFFSET 1
+#define ATMEL_LCDC_GUARDT (0x7f << ATMEL_LCDC_GUARDT_OFFSET)
+#define ATMEL_LCDC_BUSY (1 << 31)
+
+#define ATMEL_LCDC_CONTRAST_CTR 0x0840
+#define ATMEL_LCDC_PS (3 << 0)
+#define ATMEL_LCDC_PS_DIV1 (0 << 0)
+#define ATMEL_LCDC_PS_DIV2 (1 << 0)
+#define ATMEL_LCDC_PS_DIV4 (2 << 0)
+#define ATMEL_LCDC_PS_DIV8 (3 << 0)
+#define ATMEL_LCDC_POL (1 << 2)
+#define ATMEL_LCDC_POL_NEGATIVE (0 << 2)
+#define ATMEL_LCDC_POL_POSITIVE (1 << 2)
+#define ATMEL_LCDC_ENA (1 << 3)
+#define ATMEL_LCDC_ENA_PWMDISABLE (0 << 3)
+#define ATMEL_LCDC_ENA_PWMENABLE (1 << 3)
+
+#define ATMEL_LCDC_CONTRAST_VAL 0x0844
+#define ATMEL_LCDC_CVAL (0xff)
+
+#define ATMEL_LCDC_IER 0x0848
+#define ATMEL_LCDC_IDR 0x084c
+#define ATMEL_LCDC_IMR 0x0850
+#define ATMEL_LCDC_ISR 0x0854
+#define ATMEL_LCDC_ICR 0x0858
+#define ATMEL_LCDC_LNI (1 << 0)
+#define ATMEL_LCDC_LSTLNI (1 << 1)
+#define ATMEL_LCDC_EOFI (1 << 2)
+#define ATMEL_LCDC_UFLWI (1 << 4)
+#define ATMEL_LCDC_OWRI (1 << 5)
+#define ATMEL_LCDC_MERI (1 << 6)
+
+#define ATMEL_LCDC_LUT(n) (0x0c00 + ((n)*4))
+
+#endif /* __ATMEL_LCDC_H__ */
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
* more details.
- *
- * $Header: /cvsroot/linux/drivers/video/pm3fb.h,v 1.1 2002/02/25 19:11:06 marcelo Exp $
- *
*/
#ifndef PM3FB_H
/* ***** pm3fb useful define and macro ***** */
/* ***************************************** */
-/* permedia3 -specific definitions */
-#define PM3_SCALE_TO_CLOCK(pr, fe, po) ((2 * PM3_REF_CLOCK * fe) / (pr * (1 << (po))))
-
-/* in case it's not in linux/pci.h */
-#ifndef PCI_DEVICE_ID_3DLABS_PERMEDIA3
-#define PCI_DEVICE_ID_3DLABS_PERMEDIA3 0x000a
-#endif
-
-/* max number of simultaneous board */
-#define PM3_MAX_BOARD 4
-
/* max size of options */
#define PM3_OPTIONS_SIZE 256
/* max size of font name */
#define PM3_FONTNAME_SIZE 40
-/* do we want accelerated console */
-#define PM3FB_USE_ACCEL 1
-
-/* for driver debugging ONLY */
-/* 0 = assert only, 1 = error, 2 = info, 3+ = verbose */
-/* define PM3FB_MASTER_DEBUG 1 */
-#if defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 3)
-#define PM3FB_TRACE
-#endif /* defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 3) */
-
-#ifdef PM3FB_MASTER_DEBUG
-#define DPRINTK(l,a,b...) do { if ((l) <= PM3FB_MASTER_DEBUG) printk("pm3fb: %s: " a, __FUNCTION__ , ## b); } while (0)
-#define DASSERT(t,a,b...) do { if (!(t)) printk("pm3fb: _assert failed: %s: " a, __FUNCTION__ , ## b); } while (0)
-#ifdef PM3FB_TRACE
-#define DTRACE printk("pm3fb: _enter %s\n", __FUNCTION__)
-#else /* PM3FB_TRACE */
-#define DTRACE
-#endif /* PM3FB_TRACE */
-#else /* PM3FB_MASTER_DEBUG */
-#define DPRINTK(l,a,b...)
-#define DASSERT(t,a,b...)
-#define DTRACE
-#endif /* PM3FB_MASTER_DEBUG */
-
-#if defined(PM3FB_MASTER_DEBUG) && (PM3FB_MASTER_DEBUG >= 2)
-#define PM3_SHOW_CUR_MODE pm3fb_show_cur_mode(l_fb_info)
-#else
-#define PM3_SHOW_CUR_MODE /* pm3fb_show_cur_mode() */
-#endif
-
-/* ******************************************** */
-/* ***** A bunch of register-access macro ***** */
-/* ******************************************** */
-
-#define PM3_WRITE_REG(r, v) fb_writel(v, (l_fb_info->vIOBase + r))
-#define PM3_READ_REG(r) fb_readl((l_fb_info->vIOBase + r))
-
-
-#define depth2bpp(d) ((d + 7L) & ~7L)
-#define depth2ByPP(d) (depth2bpp(d) / 8)
-
-#define depth_supported(d) ((d == 8) || (d == 12) || (d == 15) || (d == 16) || (d==32))
-
-
-#define PM3_WAIT(n) \
-do{ \
- while(PM3_READ_REG(PM3InFIFOSpace)<(n)); \
-} while(0)
-
-#define PM3_DELAY(x) do { \
- int delay = x; \
- unsigned char tmp; \
- while(delay--){tmp = PM3_READ_REG(PM3InFIFOSpace);}; \
-} while(0)
-
-#define PM3_SLOW_WRITE_REG(r,v) \
-do{ \
- DASSERT((l_fb_info->vIOBase != (unsigned char*)(-1)), "l_fb_info->vIOBase mapped in slow write\n"); \
- mb(); \
- PM3_WAIT(1); \
- mb(); \
- PM3_WRITE_REG(r,v); \
-} while(0)
-
-#define PM3_SET_INDEX(index) \
-do{ \
- PM3_SLOW_WRITE_REG(PM3RD_IndexHigh,(((index)>>8)&0xff)); \
- PM3_SLOW_WRITE_REG(PM3RD_IndexLow,((index)&0xff)); \
-} while(0)
-
-#define PM3_WRITE_DAC_REG(r, v) \
-do { \
- DASSERT((l_fb_info->vIOBase != (unsigned char*)(-1)), "l_fb_info->vIOBase mapped in write dac reg\n"); \
- PM3_SET_INDEX(r); \
- mb(); \
- PM3_WRITE_REG(PM3RD_IndexedData, v); \
-} while (0)
-
-/* next one is really a function, added as a macro to be consistent */
-#define PM3_READ_DAC_REG(r) pm3fb_read_dac_reg(l_fb_info, r)
-
-
-#define PM3_COLOR(c) \
-do { \
- if (l_fb_info->current_par->depth == 8) \
- { \
- c = (c & 0xFF); \
- c = c | (c << 8); \
- } \
- if ((l_fb_info->current_par->depth == 8) || (depth2bpp(l_fb_info->current_par->depth) == 16)) \
- { \
- c = (c & 0xFFFF); \
- c = c | (c << 16); \
- } \
-} while (0)
-
#endif /* PM3FB_H */
support for "fast userspace mutexes". The resulting kernel may not
run glibc-based applications correctly.
+config ANON_INODES
+ bool "Enable anonymous inode source" if EMBEDDED
+ default y
+ help
+ Anonymous inode source for pseudo-files like epoll, signalfd,
+ timerfd and eventfd.
+
+ If unsure, say Y.
+
config EPOLL
bool "Enable eventpoll support" if EMBEDDED
default y
+ depends on ANON_INODES
help
Disabling this option will cause the kernel to be built without
support for epoll family of system calls.
+config SIGNALFD
+ bool "Enable signalfd() system call" if EMBEDDED
+ depends on ANON_INODES
+ default y
+ help
+ Enable the signalfd() system call that allows to receive signals
+ on a file descriptor.
+
+ If unsure, say Y.
+
+config TIMERFD
+ bool "Enable timerfd() system call" if EMBEDDED
+ depends on ANON_INODES
+ default y
+ help
+ Enable the timerfd() system call that allows to receive timer
+ events on a file descriptor.
+
+ If unsure, say Y.
+
+config EVENTFD
+ bool "Enable eventfd() system call" if EMBEDDED
+ depends on ANON_INODES
+ default y
+ help
+ Enable the eventfd() system call that allows to receive both
+ kernel notification (ie. KAIO) or userspace notifications.
+
+ If unsure, say Y.
+
config SHMEM
bool "Use full shmem filesystem" if EMBEDDED
default y
*/
init_pid_ns.child_reaper = current;
+ __set_special_pids(1, 1);
cad_pid = task_pid(current);
smp_prepare_cpus(max_cpus);
return min_length;
}
-static int get_compat_itimerspec(struct itimerspec *dst,
- struct compat_itimerspec __user *src)
+int get_compat_itimerspec(struct itimerspec *dst,
+ const struct compat_itimerspec __user *src)
{
if (get_compat_timespec(&dst->it_interval, &src->it_interval) ||
get_compat_timespec(&dst->it_value, &src->it_value))
return 0;
}
-static int put_compat_itimerspec(struct compat_itimerspec __user *dst,
- struct itimerspec *src)
+int put_compat_itimerspec(struct compat_itimerspec __user *dst,
+ const struct itimerspec *src)
{
if (put_compat_timespec(&src->it_interval, &dst->it_interval) ||
put_compat_timespec(&src->it_value, &dst->it_value))
#include <linux/pid_namespace.h>
#include <linux/ptrace.h>
#include <linux/profile.h>
+#include <linux/signalfd.h>
#include <linux/mount.h>
#include <linux/proc_fs.h>
#include <linux/kthread.h>
#include <linux/audit.h> /* for audit_free() */
#include <linux/resource.h>
#include <linux/blkdev.h>
+#include <linux/task_io_accounting_ops.h>
#include <asm/uaccess.h>
#include <asm/unistd.h>
sighand = rcu_dereference(tsk->sighand);
spin_lock(&sighand->siglock);
+ /*
+ * Notify that this sighand has been detached. This must
+ * be called with the tsk->sighand lock held. Also, this
+ * access tsk->sighand internally, so it must be called
+ * before tsk->sighand is reset.
+ */
+ signalfd_detach_locked(tsk);
+
posix_cpu_timers_exit(tsk);
if (atomic_dec_and_test(&sig->count))
posix_cpu_timers_exit_group(tsk);
sig->nvcsw += tsk->nvcsw;
sig->nivcsw += tsk->nivcsw;
sig->sched_time += tsk->sched_time;
+ sig->inblock += task_io_get_inblock(tsk);
+ sig->oublock += task_io_get_oublock(tsk);
sig = NULL; /* Marker for below. */
}
if (process_session(curr) != session) {
detach_pid(curr, PIDTYPE_SID);
set_signal_session(curr->signal, session);
- attach_pid(curr, PIDTYPE_SID, session);
+ attach_pid(curr, PIDTYPE_SID, find_pid(session));
}
if (process_group(curr) != pgrp) {
detach_pid(curr, PIDTYPE_PGID);
curr->signal->pgrp = pgrp;
- attach_pid(curr, PIDTYPE_PGID, pgrp);
+ attach_pid(curr, PIDTYPE_PGID, find_pid(pgrp));
}
}
p->nvcsw + sig->nvcsw + sig->cnvcsw;
psig->cnivcsw +=
p->nivcsw + sig->nivcsw + sig->cnivcsw;
+ psig->cinblock +=
+ task_io_get_inblock(p) +
+ sig->inblock + sig->cinblock;
+ psig->coublock +=
+ task_io_get_oublock(p) +
+ sig->oublock + sig->coublock;
spin_unlock_irq(&p->parent->sighand->siglock);
}
sig->utime = sig->stime = sig->cutime = sig->cstime = cputime_zero;
sig->nvcsw = sig->nivcsw = sig->cnvcsw = sig->cnivcsw = 0;
sig->min_flt = sig->maj_flt = sig->cmin_flt = sig->cmaj_flt = 0;
+ sig->inblock = sig->oublock = sig->cinblock = sig->coublock = 0;
sig->sched_time = 0;
INIT_LIST_HEAD(&sig->cpu_timers[0]);
INIT_LIST_HEAD(&sig->cpu_timers[1]);
unsigned long stack_size,
int __user *parent_tidptr,
int __user *child_tidptr,
- int pid)
+ struct pid *pid)
{
int retval;
struct task_struct *p = NULL;
p->did_exec = 0;
delayacct_tsk_init(p); /* Must remain after dup_task_struct() */
copy_flags(clone_flags, p);
- p->pid = pid;
+ p->pid = pid_nr(pid);
retval = -EFAULT;
if (clone_flags & CLONE_PARENT_SETTID)
if (put_user(p->pid, parent_tidptr))
p->signal->tty = current->signal->tty;
p->signal->pgrp = process_group(current);
set_signal_session(p->signal, process_session(current));
- attach_pid(p, PIDTYPE_PGID, process_group(p));
- attach_pid(p, PIDTYPE_SID, process_session(p));
+ attach_pid(p, PIDTYPE_PGID, task_pgrp(current));
+ attach_pid(p, PIDTYPE_SID, task_session(current));
list_add_tail_rcu(&p->tasks, &init_task.tasks);
__get_cpu_var(process_counts)++;
}
- attach_pid(p, PIDTYPE_PID, p->pid);
+ attach_pid(p, PIDTYPE_PID, pid);
nr_threads++;
}
struct task_struct *task;
struct pt_regs regs;
- task = copy_process(CLONE_VM, 0, idle_regs(®s), 0, NULL, NULL, 0);
+ task = copy_process(CLONE_VM, 0, idle_regs(®s), 0, NULL, NULL,
+ &init_struct_pid);
if (!IS_ERR(task))
init_idle(task, cpu);
clone_flags |= CLONE_PTRACE;
}
- p = copy_process(clone_flags, stack_start, regs, stack_size, parent_tidptr, child_tidptr, nr);
+ p = copy_process(clone_flags, stack_start, regs, stack_size, parent_tidptr, child_tidptr, pid);
/*
* Do this prior waking up the new thread - the thread pointer
* might get invalid after that point, if the thread exits quickly.
#define ARCH_MIN_MMSTRUCT_ALIGN 0
#endif
-static void sighand_ctor(void *data, struct kmem_cache *cachep, unsigned long flags)
+static void sighand_ctor(void *data, struct kmem_cache *cachep,
+ unsigned long flags)
{
struct sighand_struct *sighand = data;
- if (flags & SLAB_CTOR_CONSTRUCTOR)
+ if (flags & SLAB_CTOR_CONSTRUCTOR) {
spin_lock_init(&sighand->siglock);
+ INIT_LIST_HEAD(&sighand->signalfd_list);
+ }
}
void __init proc_caches_init(void)
SLAB_HWCACHE_ALIGN|SLAB_PANIC, NULL, NULL);
}
-
/*
* Check constraints on flags passed to the unshare system call and
* force unsharing of additional process context as appropriate.
#include <linux/bootmem.h>
#include <linux/hash.h>
#include <linux/pid_namespace.h>
+#include <linux/init_task.h>
#define pid_hashfn(nr) hash_long((unsigned long)nr, pidhash_shift)
static struct hlist_head *pid_hash;
static int pidhash_shift;
static struct kmem_cache *pid_cachep;
+struct pid init_struct_pid = INIT_STRUCT_PID;
int pid_max = PID_MAX_DEFAULT;
}
EXPORT_SYMBOL_GPL(find_pid);
-int fastcall attach_pid(struct task_struct *task, enum pid_type type, int nr)
+/*
+ * attach_pid() must be called with the tasklist_lock write-held.
+ */
+int fastcall attach_pid(struct task_struct *task, enum pid_type type,
+ struct pid *pid)
{
struct pid_link *link;
- struct pid *pid;
link = &task->pids[type];
- link->pid = pid = find_pid(nr);
+ link->pid = pid;
hlist_add_head_rcu(&link->node, &pid->tasks[type]);
return 0;
#include <linux/syscalls.h>
#include <linux/ptrace.h>
#include <linux/signal.h>
+#include <linux/signalfd.h>
#include <linux/capability.h>
#include <linux/freezer.h>
#include <linux/pid_namespace.h>
/* Given the mask, find the first available signal that should be serviced. */
-static int
-next_signal(struct sigpending *pending, sigset_t *mask)
+int next_signal(struct sigpending *pending, sigset_t *mask)
{
unsigned long i, *s, *m, x;
int sig = 0;
struct sigqueue * q = NULL;
int ret = 0;
+ /*
+ * Deliver the signal to listening signalfds. This must be called
+ * with the sighand lock held.
+ */
+ signalfd_notify(t, sig);
+
/*
* fast-pathed signals for kernel-internal things like SIGSTOP
* or SIGKILL.
ret = 1;
goto out;
}
+ /*
+ * Deliver the signal to listening signalfds. This must be called
+ * with the sighand lock held.
+ */
+ signalfd_notify(p, sig);
list_add_tail(&q->list, &p->pending.list);
sigaddset(&p->pending.signal, sig);
q->info.si_overrun++;
goto out;
}
+ /*
+ * Deliver the signal to listening signalfds. This must be called
+ * with the sighand lock held.
+ */
+ signalfd_notify(p, sig);
/*
* Put this signal on the shared-pending queue.
/*
* If you change siginfo_t structure, please be sure
* this code is fixed accordingly.
+ * Please remember to update the signalfd_copyinfo() function
+ * inside fs/signalfd.c too, in case siginfo_t changes.
* It should never copy any pad contained in the structure
* to avoid security leaks, but must copy the generic
* 3 ints plus the relevant union member.
#include <linux/sched.h>
#include <linux/stop_machine.h>
#include <linux/syscalls.h>
+#include <linux/interrupt.h>
+
#include <asm/atomic.h>
#include <asm/semaphore.h>
#include <asm/uaccess.h>
if (stopmachine_state == STOPMACHINE_DISABLE_IRQ
&& !irqs_disabled) {
local_irq_disable();
+ hard_irq_disable();
irqs_disabled = 1;
/* Ack: irqs disabled. */
smp_mb(); /* Must read state first. */
/* Make them disable irqs. */
local_irq_disable();
+ hard_irq_disable();
stopmachine_set_state(STOPMACHINE_DISABLE_IRQ);
return 0;
#include <linux/prctl.h>
#include <linux/highuid.h>
#include <linux/fs.h>
+#include <linux/resource.h>
#include <linux/kernel.h>
#include <linux/kexec.h>
#include <linux/workqueue.h>
#include <linux/signal.h>
#include <linux/cn_proc.h>
#include <linux/getcpu.h>
+#include <linux/task_io_accounting_ops.h>
#include <linux/compat.h>
#include <linux/syscalls.h>
int error = -EINVAL;
struct pid *pgrp;
- if (which > 2 || which < 0)
+ if (which > PRIO_USER || which < PRIO_PROCESS)
goto out;
/* normalize: avoid signed division (rounding problems) */
long niceval, retval = -ESRCH;
struct pid *pgrp;
- if (which > 2 || which < 0)
+ if (which > PRIO_USER || which < PRIO_PROCESS)
return -EINVAL;
read_lock(&tasklist_lock);
if (process_group(p) != pgid) {
detach_pid(p, PIDTYPE_PGID);
p->signal->pgrp = pgid;
- attach_pid(p, PIDTYPE_PGID, pgid);
+ attach_pid(p, PIDTYPE_PGID, find_pid(pgid));
}
err = 0;
r->ru_nivcsw = p->signal->cnivcsw;
r->ru_minflt = p->signal->cmin_flt;
r->ru_majflt = p->signal->cmaj_flt;
+ r->ru_inblock = p->signal->cinblock;
+ r->ru_oublock = p->signal->coublock;
if (who == RUSAGE_CHILDREN)
break;
r->ru_nivcsw += p->signal->nivcsw;
r->ru_minflt += p->signal->min_flt;
r->ru_majflt += p->signal->maj_flt;
+ r->ru_inblock += p->signal->inblock;
+ r->ru_oublock += p->signal->oublock;
t = p;
do {
utime = cputime_add(utime, t->utime);
r->ru_nivcsw += t->nivcsw;
r->ru_minflt += t->min_flt;
r->ru_majflt += t->maj_flt;
+ r->ru_inblock += task_io_get_inblock(t);
+ r->ru_oublock += task_io_get_oublock(t);
t = next_thread(t);
} while (t != p);
break;
cond_syscall(sys_bdflush);
cond_syscall(sys_ioprio_set);
cond_syscall(sys_ioprio_get);
+
+/* New file descriptors */
+cond_syscall(sys_signalfd);
+cond_syscall(sys_timerfd);
+cond_syscall(sys_eventfd);
lib-y += kobject.o kref.o kobject_uevent.o klist.o
obj-y += div64.o sort.o parser.o halfmd4.o debug_locks.o random32.o \
- bust_spinlocks.o
+ bust_spinlocks.o hexdump.o
ifeq ($(CONFIG_DEBUG_KOBJECT),y)
CFLAGS_kobject.o += -DDEBUG
--- /dev/null
+/*
+ * lib/hexdump.c
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation. See README and COPYING for
+ * more details.
+ */
+
+#include <linux/types.h>
+#include <linux/ctype.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+
+/**
+ * hex_dump_to_buffer - convert a blob of data to "hex ASCII" in memory
+ * @buf: data blob to dump
+ * @len: number of bytes in the @buf
+ * @linebuf: where to put the converted data
+ * @linebuflen: total size of @linebuf, including space for terminating NUL
+ *
+ * hex_dump_to_buffer() works on one "line" of output at a time, i.e.,
+ * 16 bytes of input data converted to hex + ASCII output.
+ *
+ * Given a buffer of u8 data, hex_dump_to_buffer() converts the input data
+ * to a hex + ASCII dump at the supplied memory location.
+ * The converted output is always NUL-terminated.
+ *
+ * E.g.:
+ * hex_dump_to_buffer(frame->data, frame->len, linebuf, sizeof(linebuf));
+ *
+ * example output buffer:
+ * 40414243 44454647 48494a4b 4c4d4e4f @ABCDEFGHIJKLMNO
+ */
+void hex_dump_to_buffer(const void *buf, size_t len, char *linebuf,
+ size_t linebuflen)
+{
+ const u8 *ptr = buf;
+ u8 ch;
+ int j, lx = 0;
+
+ for (j = 0; (j < 16) && (j < len) && (lx + 3) < linebuflen; j++) {
+ if (j && !(j % 4))
+ linebuf[lx++] = ' ';
+ ch = ptr[j];
+ linebuf[lx++] = hex_asc(ch >> 4);
+ linebuf[lx++] = hex_asc(ch & 0x0f);
+ }
+ if ((lx + 2) < linebuflen) {
+ linebuf[lx++] = ' ';
+ linebuf[lx++] = ' ';
+ }
+ for (j = 0; (j < 16) && (j < len) && (lx + 2) < linebuflen; j++)
+ linebuf[lx++] = isprint(ptr[j]) ? ptr[j] : '.';
+ linebuf[lx++] = '\0';
+}
+EXPORT_SYMBOL(hex_dump_to_buffer);
+
+/**
+ * print_hex_dump - print a text hex dump to syslog for a binary blob of data
+ * @level: kernel log level (e.g. KERN_DEBUG)
+ * @prefix_type: controls whether prefix of an offset, address, or none
+ * is printed (%DUMP_PREFIX_OFFSET, %DUMP_PREFIX_ADDRESS, %DUMP_PREFIX_NONE)
+ * @buf: data blob to dump
+ * @len: number of bytes in the @buf
+ *
+ * Given a buffer of u8 data, print_hex_dump() prints a hex + ASCII dump
+ * to the kernel log at the specified kernel log level, with an optional
+ * leading prefix.
+ *
+ * E.g.:
+ * print_hex_dump(KERN_DEBUG, DUMP_PREFIX_ADDRESS, frame->data, frame->len);
+ *
+ * Example output using %DUMP_PREFIX_OFFSET:
+ * 0009ab42: 40414243 44454647 48494a4b 4c4d4e4f @ABCDEFGHIJKLMNO
+ * Example output using %DUMP_PREFIX_ADDRESS:
+ * ffffffff88089af0: 70717273 74757677 78797a7b 7c7d7e7f pqrstuvwxyz{|}~.
+ */
+void print_hex_dump(const char *level, int prefix_type, void *buf, size_t len)
+{
+ u8 *ptr = buf;
+ int i, linelen, remaining = len;
+ unsigned char linebuf[100];
+
+ for (i = 0; i < len; i += 16) {
+ linelen = min(remaining, 16);
+ remaining -= 16;
+ hex_dump_to_buffer(ptr + i, linelen, linebuf, sizeof(linebuf));
+
+ switch (prefix_type) {
+ case DUMP_PREFIX_ADDRESS:
+ printk("%s%*p: %s\n", level,
+ (int)(2 * sizeof(void *)), ptr + i, linebuf);
+ break;
+ case DUMP_PREFIX_OFFSET:
+ printk("%s%.8x: %s\n", level, i, linebuf);
+ break;
+ default:
+ printk("%s%s\n", level, linebuf);
+ break;
+ }
+ }
+}
+EXPORT_SYMBOL(print_hex_dump);
}
/**
- * generic_writepages - walk the list of dirty pages of the given address space and writepage() all of them.
+ * write_cache_pages - walk the list of dirty pages of the given address space and write all of them.
* @mapping: address space structure to write
* @wbc: subtract the number of written pages from *@wbc->nr_to_write
+ * @writepage: function called for each page
+ * @data: data passed to writepage function
*
- * This is a library function, which implements the writepages()
- * address_space_operation.
- *
- * If a page is already under I/O, generic_writepages() skips it, even
+ * If a page is already under I/O, write_cache_pages() skips it, even
* if it's dirty. This is desirable behaviour for memory-cleaning writeback,
* but it is INCORRECT for data-integrity system calls such as fsync(). fsync()
* and msync() need to guarantee that all the data which was dirty at the time
* the call was made get new I/O started against them. If wbc->sync_mode is
* WB_SYNC_ALL then we were called for data integrity and we must wait for
* existing IO to complete.
- *
- * Derived from mpage_writepages() - if you fix this you should check that
- * also!
*/
-int generic_writepages(struct address_space *mapping,
- struct writeback_control *wbc)
+int write_cache_pages(struct address_space *mapping,
+ struct writeback_control *wbc, writepage_t writepage,
+ void *data)
{
struct backing_dev_info *bdi = mapping->backing_dev_info;
int ret = 0;
int done = 0;
- int (*writepage)(struct page *page, struct writeback_control *wbc);
struct pagevec pvec;
int nr_pages;
pgoff_t index;
return 0;
}
- writepage = mapping->a_ops->writepage;
-
- /* deal with chardevs and other special file */
- if (!writepage)
- return 0;
-
pagevec_init(&pvec, 0);
if (wbc->range_cyclic) {
index = mapping->writeback_index; /* Start from prev offset */
continue;
}
- ret = (*writepage)(page, wbc);
- mapping_set_error(mapping, ret);
+ ret = (*writepage)(page, wbc, data);
if (unlikely(ret == AOP_WRITEPAGE_ACTIVATE))
unlock_page(page);
mapping->writeback_index = index;
return ret;
}
+EXPORT_SYMBOL(write_cache_pages);
+
+/*
+ * Function used by generic_writepages to call the real writepage
+ * function and set the mapping flags on error
+ */
+static int __writepage(struct page *page, struct writeback_control *wbc,
+ void *data)
+{
+ struct address_space *mapping = data;
+ int ret = mapping->a_ops->writepage(page, wbc);
+ mapping_set_error(mapping, ret);
+ return ret;
+}
+
+/**
+ * generic_writepages - walk the list of dirty pages of the given address space and writepage() all of them.
+ * @mapping: address space structure to write
+ * @wbc: subtract the number of written pages from *@wbc->nr_to_write
+ *
+ * This is a library function, which implements the writepages()
+ * address_space_operation.
+ */
+int generic_writepages(struct address_space *mapping,
+ struct writeback_control *wbc)
+{
+ /* deal with chardevs and other special file */
+ if (!mapping->a_ops->writepage)
+ return 0;
+
+ return write_cache_pages(mapping, wbc, __writepage, mapping);
+}
EXPORT_SYMBOL(generic_writepages);
if (current_interval < current->mm->last_interval)
current->mm->token_priority++;
else {
- current->mm->token_priority--;
- if (unlikely(current->mm->token_priority < 0))
- current->mm->token_priority = 0;
+ if (likely(current->mm->token_priority > 0))
+ current->mm->token_priority--;
}
/* Check if we deserve the token */
if (current->mm->token_priority >
{
struct delayed_work *vmstat_work = &per_cpu(vmstat_work, cpu);
- INIT_DELAYED_WORK(vmstat_work, vmstat_update);
+ INIT_DELAYED_WORK_DEFERRABLE(vmstat_work, vmstat_update);
schedule_delayed_work_on(cpu, vmstat_work, HZ + cpu);
}
projects / cascardo / linux.git / commitdiff