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>

2 files changed, 0 insertions, 79 deletions

diff --git a/arch/x86/include/asm/io_apic.h b/arch/x86/include/asm/io_apic.h
index c53587868590..af6f9d4309bf 100644
--- 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 a602b35bcfe7..6e3d4c771832 100644
--- 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
@@ -1524,38 +1523,6 @@ static void __init setup_IO_APIC_irqs(void)
 }
 
 /*
- * 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.
  */
 static void __init setup_timer_IRQ0_pin(unsigned int ioapic_idx,
@@ -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)
 {