ppc64: Use the correct prototypes for i8259 functions

[cascardo/linux.git] / arch / ppc64 / kernel / xics.c

diff --git a/arch/ppc64/kernel/xics.c b/arch/ppc64/kernel/xics.c
index 879f39b..a32207d 100644 (file)
--- a/arch/ppc64/kernel/xics.c
+++ b/arch/ppc64/kernel/xics.c
@@ -28,8 +28,7 @@
 #include <asm/xics.h>
 #include <asm/hvcall.h>
 #include <asm/machdep.h>
-
-#include "i8259.h"
+#include <asm/i8259.h>
 
 static unsigned int xics_startup(unsigned int irq);
 static void xics_enable_irq(unsigned int irq);
@@ -38,7 +37,7 @@ static void xics_mask_and_ack_irq(unsigned int irq);
 static void xics_end_irq(unsigned int irq);
 static void xics_set_affinity(unsigned int irq_nr, cpumask_t cpumask);
 
-struct hw_interrupt_type xics_pic = {
+static struct hw_interrupt_type xics_pic = {
        .typename = " XICS     ",
        .startup = xics_startup,
        .enable = xics_enable_irq,
@@ -48,7 +47,7 @@ struct hw_interrupt_type xics_pic = {
        .set_affinity = xics_set_affinity
 };
 
-struct hw_interrupt_type xics_8259_pic = {
+static struct hw_interrupt_type xics_8259_pic = {
        .typename = " XICS/8259",
        .ack = xics_mask_and_ack_irq,
 };
@@ -89,9 +88,8 @@ static struct xics_ipl __iomem *xics_per_cpu[NR_CPUS];
 static int xics_irq_8259_cascade = 0;
 static int xics_irq_8259_cascade_real = 0;
 static unsigned int default_server = 0xFF;
-/* also referenced in smp.c... */
-unsigned int default_distrib_server = 0;
-unsigned int interrupt_server_size = 8;
+static unsigned int default_distrib_server = 0;
+static unsigned int interrupt_server_size = 8;
 
 /*
  * XICS only has a single IPI, so encode the messages per CPU
@@ -99,10 +97,10 @@ unsigned int interrupt_server_size = 8;
 struct xics_ipi_struct xics_ipi_message[NR_CPUS] __cacheline_aligned;
 
 /* RTAS service tokens */
-int ibm_get_xive;
-int ibm_set_xive;
-int ibm_int_on;
-int ibm_int_off;
+static int ibm_get_xive;
+static int ibm_set_xive;
+static int ibm_int_on;
+static int ibm_int_off;
 
 typedef struct {
        int (*xirr_info_get)(int cpu);
@@ -284,16 +282,17 @@ static void xics_enable_irq(unsigned int virq)
        call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server,
                                DEFAULT_PRIORITY);
        if (call_status != 0) {
-               printk(KERN_ERR "xics_enable_irq: irq=%d: ibm_set_xive "
-                      "returned %x\n", irq, call_status);
+               printk(KERN_ERR "xics_enable_irq: irq=%u: ibm_set_xive "
+                      "returned %d\n", irq, call_status);
+               printk("set_xive %x, server %x\n", ibm_set_xive, server);
                return;
        }
 
        /* Now unmask the interrupt (often a no-op) */
        call_status = rtas_call(ibm_int_on, 1, 1, NULL, irq);
        if (call_status != 0) {
-               printk(KERN_ERR "xics_enable_irq: irq=%d: ibm_int_on "
-                      "returned %x\n", irq, call_status);
+               printk(KERN_ERR "xics_enable_irq: irq=%u: ibm_int_on "
+                      "returned %d\n", irq, call_status);
                return;
        }
 }
@@ -308,8 +307,8 @@ static void xics_disable_real_irq(unsigned int irq)
 
        call_status = rtas_call(ibm_int_off, 1, 1, NULL, irq);
        if (call_status != 0) {
-               printk(KERN_ERR "xics_disable_real_irq: irq=%d: "
-                      "ibm_int_off returned %x\n", irq, call_status);
+               printk(KERN_ERR "xics_disable_real_irq: irq=%u: "
+                      "ibm_int_off returned %d\n", irq, call_status);
                return;
        }
 
@@ -317,8 +316,8 @@ static void xics_disable_real_irq(unsigned int irq)
        /* Have to set XIVE to 0xff to be able to remove a slot */
        call_status = rtas_call(ibm_set_xive, 3, 1, NULL, irq, server, 0xff);
        if (call_status != 0) {
-               printk(KERN_ERR "xics_disable_irq: irq=%d: ibm_set_xive(0xff)"
-                      " returned %x\n", irq, call_status);
+               printk(KERN_ERR "xics_disable_irq: irq=%u: ibm_set_xive(0xff)"
+                      " returned %d\n", irq, call_status);
                return;
        }
 }
@@ -366,7 +365,7 @@ int xics_get_irq(struct pt_regs *regs)
 
        /* for sanity, this had better be < NR_IRQS - 16 */
        if (vec == xics_irq_8259_cascade_real) {
-               irq = i8259_irq(cpu);
+               irq = i8259_irq(regs);
                if (irq == -1) {
                        /* Spurious cascaded interrupt.  Still must ack xics */
                        xics_end_irq(irq_offset_up(xics_irq_8259_cascade));
@@ -380,7 +379,7 @@ int xics_get_irq(struct pt_regs *regs)
                if (irq == NO_IRQ)
                        irq = real_irq_to_virt_slowpath(vec);
                if (irq == NO_IRQ) {
-                       printk(KERN_ERR "Interrupt %d (real) is invalid,"
+                       printk(KERN_ERR "Interrupt %u (real) is invalid,"
                               " disabling it.\n", vec);
                        xics_disable_real_irq(vec);
                } else
@@ -589,7 +588,7 @@ static int __init xics_setup_i8259(void)
                                no_action, 0, "8259 cascade", NULL))
                        printk(KERN_ERR "xics_setup_i8259: couldn't get 8259 "
                                        "cascade\n");
-               i8259_init(0);
+               i8259_init(0, 0);
        }
        return 0;
 }
@@ -622,7 +621,7 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
        status = rtas_call(ibm_get_xive, 1, 3, xics_status, irq);
 
        if (status) {
-               printk(KERN_ERR "xics_set_affinity: irq=%d ibm,get-xive "
+               printk(KERN_ERR "xics_set_affinity: irq=%u ibm,get-xive "
                       "returns %d\n", irq, status);
                return;
        }
@@ -641,12 +640,38 @@ static void xics_set_affinity(unsigned int virq, cpumask_t cpumask)
                                irq, newmask, xics_status[1]);
 
        if (status) {
-               printk(KERN_ERR "xics_set_affinity: irq=%d ibm,set-xive "
+               printk(KERN_ERR "xics_set_affinity: irq=%u ibm,set-xive "
                       "returns %d\n", irq, status);
                return;
        }
 }
 
+void xics_teardown_cpu(int secondary)
+{
+       int cpu = smp_processor_id();
+
+       ops->cppr_info(cpu, 0x00);
+       iosync();
+
+       /*
+        * Some machines need to have at least one cpu in the GIQ,
+        * so leave the master cpu in the group.
+        */
+       if (secondary) {
+               /*
+                * we need to EOI the IPI if we got here from kexec down IPI
+                *
+                * probably need to check all the other interrupts too
+                * should we be flagging idle loop instead?
+                * or creating some task to be scheduled?
+                */
+               ops->xirr_info_set(cpu, XICS_IPI);
+               rtas_set_indicator(GLOBAL_INTERRUPT_QUEUE,
+                       (1UL << interrupt_server_size) - 1 -
+                       default_distrib_server, 0);
+       }
+}
+
 #ifdef CONFIG_HOTPLUG_CPU
 
 /* Interrupts are disabled. */
@@ -694,7 +719,7 @@ void xics_migrate_irqs_away(void)
 
                status = rtas_call(ibm_get_xive, 1, 3, xics_status, irq);
                if (status) {
-                       printk(KERN_ERR "migrate_irqs_away: irq=%d "
+                       printk(KERN_ERR "migrate_irqs_away: irq=%u "
                                        "ibm,get-xive returns %d\n",
                                        virq, status);
                        goto unlock;
@@ -708,7 +733,7 @@ void xics_migrate_irqs_away(void)
                if (xics_status[0] != get_hard_smp_processor_id(cpu))
                        goto unlock;
 
-               printk(KERN_WARNING "IRQ %d affinity broken off cpu %u\n",
+               printk(KERN_WARNING "IRQ %u affinity broken off cpu %u\n",
                       virq, cpu);
 
                /* Reset affinity to all cpus */