1 files changed, 104 insertions, 10 deletions

diff --git a/arch/x86/kernel/io_apic_64.c b/arch/x86/kernel/io_apic_64.c
index cbac1670c7c3..1627c0d53e0b 100644
--- a/arch/x86/kernel/io_apic_64.c
+++ b/arch/x86/kernel/io_apic_64.c
@@ -32,9 +32,11 @@
 #include <linux/msi.h>
 #include <linux/htirq.h>
 #include <linux/dmar.h>
+#include <linux/jiffies.h>
 #ifdef CONFIG_ACPI
 #include <acpi/acpi_bus.h>
 #endif
+#include <linux/bootmem.h>
 
 #include <asm/idle.h>
 #include <asm/io.h>
@@ -1069,7 +1071,7 @@ void __apicdebuginit print_local_APIC(void * dummy)
         v = apic_read(APIC_LVR);
         printk(KERN_INFO "... APIC VERSION: %08x\n", v);
         ver = GET_APIC_VERSION(v);
-        maxlvt = get_maxlvt();
+        maxlvt = lapic_get_maxlvt();
 
         v = apic_read(APIC_TASKPRI);
         printk(KERN_DEBUG "... APIC TASKPRI: %08x (%02x)\n", v, v & APIC_TPRI_MASK);
@@ -1171,7 +1173,7 @@ void __apicdebuginit print_PIC(void)
 
 #endif  /*  0  */
 
-static void __init enable_IO_APIC(void)
+void __init enable_IO_APIC(void)
 {
         union IO_APIC_reg_01 reg_01;
         int i8259_apic, i8259_pin;
@@ -1298,7 +1300,7 @@ static int __init timer_irq_works(void)
          */
 
         /* jiffies wrap? */
-        if (jiffies - t1 > 4)
+        if (time_after(jiffies, t1 + 4))
                 return 1;
         return 0;
 }
@@ -1411,7 +1413,7 @@ static void irq_complete_move(unsigned int irq)
         if (likely(!cfg->move_in_progress))
                 return;
 
-        vector = ~get_irq_regs()->orig_rax;
+        vector = ~get_irq_regs()->orig_ax;
         me = smp_processor_id();
         if ((vector == cfg->vector) && cpu_isset(me, cfg->domain)) {
                 cpumask_t cleanup_mask;
@@ -1438,7 +1440,7 @@ static void ack_apic_level(unsigned int irq)
         int do_unmask_irq = 0;
 
         irq_complete_move(irq);
-#if defined(CONFIG_GENERIC_PENDING_IRQ) || defined(CONFIG_IRQBALANCE)
+#ifdef CONFIG_GENERIC_PENDING_IRQ
         /* If we are moving the irq we need to mask it */
         if (unlikely(irq_desc[irq].status & IRQ_MOVE_PENDING)) {
                 do_unmask_irq = 1;
@@ -1565,7 +1567,7 @@ static struct hw_interrupt_type lapic_irq_type __read_mostly = {
         .end = end_lapic_irq,
 };
 
-static void setup_nmi (void)
+static void __init setup_nmi(void)
 {
         /*
          * Dirty trick to enable the NMI watchdog ...
@@ -1578,7 +1580,7 @@ static void setup_nmi (void)
          */ 
         printk(KERN_INFO "activating NMI Watchdog ...");
 
-        enable_NMI_through_LVT0(NULL);
+        enable_NMI_through_LVT0();
 
         printk(" done.\n");
 }
@@ -1654,7 +1656,7 @@ static inline void unlock_ExtINT_logic(void)
  *
  * FIXME: really need to revamp this for modern platforms only.
  */
-static inline void check_timer(void)
+static inline void __init check_timer(void)
 {
         struct irq_cfg *cfg = irq_cfg + 0;
         int apic1, pin1, apic2, pin2;
@@ -1788,7 +1790,10 @@ __setup("no_timer_check", notimercheck);
 
 void __init setup_IO_APIC(void)
 {
-        enable_IO_APIC();
+
+        /*
+         * calling enable_IO_APIC() is moved to setup_local_APIC for BP
+         */
 
         if (acpi_ioapic)
                 io_apic_irqs = ~0;      /* all IRQs go through IOAPIC */
@@ -1850,7 +1855,7 @@ static int ioapic_resume(struct sys_device *dev)
 }
 
 static struct sysdev_class ioapic_sysdev_class = {
-        set_kset_name("ioapic"),
+        .name = "ioapic",
         .suspend = ioapic_suspend,
         .resume = ioapic_resume,
 };
@@ -2288,3 +2293,92 @@ void __init setup_ioapic_dest(void)
 }
 #endif
 
+#define IOAPIC_RESOURCE_NAME_SIZE 11
+
+static struct resource *ioapic_resources;
+
+static struct resource * __init ioapic_setup_resources(void)
+{
+        unsigned long n;
+        struct resource *res;
+        char *mem;
+        int i;
+
+        if (nr_ioapics <= 0)
+                return NULL;
+
+        n = IOAPIC_RESOURCE_NAME_SIZE + sizeof(struct resource);
+        n *= nr_ioapics;
+
+        mem = alloc_bootmem(n);
+        res = (void *)mem;
+
+        if (mem != NULL) {
+                memset(mem, 0, n);
+                mem += sizeof(struct resource) * nr_ioapics;
+
+                for (i = 0; i < nr_ioapics; i++) {
+                        res[i].name = mem;
+                        res[i].flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+                        sprintf(mem,  "IOAPIC %u", i);
+                        mem += IOAPIC_RESOURCE_NAME_SIZE;
+                }
+        }
+
+        ioapic_resources = res;
+
+        return res;
+}
+
+void __init ioapic_init_mappings(void)
+{
+        unsigned long ioapic_phys, idx = FIX_IO_APIC_BASE_0;
+        struct resource *ioapic_res;
+        int i;
+
+        ioapic_res = ioapic_setup_resources();
+        for (i = 0; i < nr_ioapics; i++) {
+                if (smp_found_config) {
+                        ioapic_phys = mp_ioapics[i].mpc_apicaddr;
+                } else {
+                        ioapic_phys = (unsigned long)
+                                alloc_bootmem_pages(PAGE_SIZE);
+                        ioapic_phys = __pa(ioapic_phys);
+                }
+                set_fixmap_nocache(idx, ioapic_phys);
+                apic_printk(APIC_VERBOSE,
+                            "mapped IOAPIC to %016lx (%016lx)\n",
+                            __fix_to_virt(idx), ioapic_phys);
+                idx++;
+
+                if (ioapic_res != NULL) {
+                        ioapic_res->start = ioapic_phys;
+                        ioapic_res->end = ioapic_phys + (4 * 1024) - 1;
+                        ioapic_res++;
+                }
+        }
+}
+
+static int __init ioapic_insert_resources(void)
+{
+        int i;
+        struct resource *r = ioapic_resources;
+
+        if (!r) {
+                printk(KERN_ERR
+                       "IO APIC resources could be not be allocated.\n");
+                return -1;
+        }
+
+        for (i = 0; i < nr_ioapics; i++) {
+                insert_resource(&iomem_resource, r);
+                r++;
+        }
+
+        return 0;
+}
+
+/* Insert the IO APIC resources after PCI initialization has occured to handle
+ * IO APICS that are mapped in on a BAR in PCI space. */
+late_initcall(ioapic_insert_resources);
+