x86, irq: Clean up unused IOAPIC interface

Now we have converted all x86 platforms to use the common irqdomain map
interface. There's no caller of io_apic_set_pci_routing(),
setup_IO_APIC_irq_extra() and io_apic_setup_irq_pin_once() any more,
so kill them.

Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Joerg Roedel <joro@8bytes.org>
Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Likely <grant.likely@linaro.org>
Cc: Rafael J. Wysocki <rjw@rjwysocki.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Link: http://lkml.kernel.org/r/1402302011-23642-35-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index c535878..af6f9d4 100644 (file)
--- a/arch/x86/include/asm/io_apic.h
+++ b/arch/x86/include/asm/io_apic.h
@@ -141,9 +141,6 @@ extern int noioapicreroute;
 
 struct io_apic_irq_attr;
 struct irq_cfg;
-extern int io_apic_set_pci_routing(struct device *dev, int irq,
-                struct io_apic_irq_attr *irq_attr);
-extern void setup_IO_APIC_irq_extra(u32 gsi);
 extern void ioapic_insert_resources(void);
 
 extern int native_setup_ioapic_entry(int, struct IO_APIC_route_entry *,
@@ -155,8 +152,6 @@ extern void native_compose_msi_msg(struct pci_dev *pdev,
                                   unsigned int irq, unsigned int dest,
                                   struct msi_msg *msg, u8 hpet_id);
 extern void native_eoi_ioapic_pin(int apic, int pin, int vector);
-extern int io_apic_setup_irq_pin_once(unsigned int irq, int node,
-                                     struct io_apic_irq_attr *attr);
 
 extern int save_ioapic_entries(void);
 extern void mask_ioapic_entries(void);
@@ -240,10 +235,6 @@ static inline int mp_find_ioapic(u32 gsi) { return 0; }
 static inline u32 mp_pin_to_gsi(int ioapic, int pin) { return UINT_MAX; }
 static inline int mp_map_gsi_to_irq(u32 gsi, unsigned int flags) { return gsi; }
 
-struct io_apic_irq_attr;
-static inline int io_apic_set_pci_routing(struct device *dev, int irq,
-                struct io_apic_irq_attr *irq_attr) { return 0; }
-
 static inline int save_ioapic_entries(void)
 {
        return -ENOMEM;

diff --git a/arch/x86/kernel/apic/io_apic.c b/arch/x86/kernel/apic/io_apic.c
index a602b35..6e3d4c7 100644 (file)
--- a/arch/x86/kernel/apic/io_apic.c
+++ b/arch/x86/kernel/apic/io_apic.c
@@ -111,7 +111,6 @@ static struct ioapic {
        struct ioapic_domain_cfg irqdomain_cfg;
        struct irq_domain *irqdomain;
        struct mp_pin_info *pin_info;
-       DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1);
 } ioapics[MAX_IO_APICS];
 
 #define mpc_ioapic_ver(ioapic_idx)     ioapics[ioapic_idx].mp_config.apicver
@@ -1523,38 +1522,6 @@ static void __init setup_IO_APIC_irqs(void)
                __io_apic_setup_irqs(ioapic_idx);
 }
 
-/*
- * for the gsi that is not in first ioapic
- * but could not use acpi_register_gsi()
- * like some special sci in IBM x3330
- */
-void setup_IO_APIC_irq_extra(u32 gsi)
-{
-       int ioapic_idx = 0, pin, idx, irq, node = cpu_to_node(0);
-       struct io_apic_irq_attr attr;
-
-       /*
-        * Convert 'gsi' to 'ioapic.pin'.
-        */
-       ioapic_idx = mp_find_ioapic(gsi);
-       if (ioapic_idx < 0)
-               return;
-
-       pin = mp_find_ioapic_pin(ioapic_idx, gsi);
-       idx = find_irq_entry(ioapic_idx, pin, mp_INT);
-       if (idx == -1)
-               return;
-
-       irq = pin_2_irq(idx, ioapic_idx, pin, IOAPIC_MAP_ALLOC);
-       if (irq < 0 || mp_init_irq_at_boot(ioapic_idx, irq))
-               return;
-
-       set_io_apic_irq_attr(&attr, ioapic_idx, pin, irq_trigger(idx),
-                            irq_polarity(idx));
-
-       io_apic_setup_irq_pin_once(irq, node, &attr);
-}
-
 /*
  * Set up the timer pin, possibly with the 8259A-master behind.
  */
@@ -3458,27 +3425,6 @@ io_apic_setup_irq_pin(unsigned int irq, int node, struct io_apic_irq_attr *attr)
        return ret;
 }
 
-int io_apic_setup_irq_pin_once(unsigned int irq, int node,
-                              struct io_apic_irq_attr *attr)
-{
-       unsigned int ioapic_idx = attr->ioapic, pin = attr->ioapic_pin;
-       int ret;
-       struct IO_APIC_route_entry orig_entry;
-
-       /* Avoid redundant programming */
-       if (test_bit(pin, ioapics[ioapic_idx].pin_programmed)) {
-               pr_debug("Pin %d-%d already programmed\n", mpc_ioapic_id(ioapic_idx), pin);
-               orig_entry = ioapic_read_entry(attr->ioapic, pin);
-               if (attr->trigger == orig_entry.trigger && attr->polarity == orig_entry.polarity)
-                       return 0;
-               return -EBUSY;
-       }
-       ret = io_apic_setup_irq_pin(irq, node, attr);
-       if (!ret)
-               set_bit(pin, ioapics[ioapic_idx].pin_programmed);
-       return ret;
-}
-
 static int __init io_apic_get_redir_entries(int ioapic)
 {
        union IO_APIC_reg_01    reg_01;
@@ -3525,22 +3471,6 @@ int __init arch_probe_nr_irqs(void)
        return 0;
 }
 
-int io_apic_set_pci_routing(struct device *dev, int irq,
-                           struct io_apic_irq_attr *irq_attr)
-{
-       int node;
-
-       if (!IO_APIC_IRQ(irq)) {
-               apic_printk(APIC_QUIET,KERN_ERR "IOAPIC[%d]: Invalid reference to IRQ 0\n",
-                           irq_attr->ioapic);
-               return -EINVAL;
-       }
-
-       node = dev ? dev_to_node(dev) : cpu_to_node(0);
-
-       return io_apic_setup_irq_pin_once(irq, node, irq_attr);
-}
-
 #ifdef CONFIG_X86_32
 static int __init io_apic_get_unique_id(int ioapic, int apic_id)
 {