Merge branch 'x86/apic' into x86/core
[linux-2.6.git] / arch / x86 / kernel / apic_32.c
index 01708f128eeee410283dd61e7528d9a6d9195a15..12b154822bce197ebd4f4e58b6fa1ab97220dadd 100644 (file)
@@ -145,13 +145,18 @@ static int modern_apic(void)
        return lapic_get_version() >= 0x14;
 }
 
-void apic_wait_icr_idle(void)
+/*
+ * Paravirt kernels also might be using these below ops. So we still
+ * use generic apic_read()/apic_write(), which might be pointing to different
+ * ops in PARAVIRT case.
+ */
+void xapic_wait_icr_idle(void)
 {
        while (apic_read(APIC_ICR) & APIC_ICR_BUSY)
                cpu_relax();
 }
 
-u32 safe_apic_wait_icr_idle(void)
+u32 safe_xapic_wait_icr_idle(void)
 {
        u32 send_status;
        int timeout;
@@ -167,6 +172,34 @@ u32 safe_apic_wait_icr_idle(void)
        return send_status;
 }
 
+void xapic_icr_write(u32 low, u32 id)
+{
+       apic_write(APIC_ICR2, SET_APIC_DEST_FIELD(id));
+       apic_write(APIC_ICR, low);
+}
+
+u64 xapic_icr_read(void)
+{
+       u32 icr1, icr2;
+
+       icr2 = apic_read(APIC_ICR2);
+       icr1 = apic_read(APIC_ICR);
+
+       return icr1 | ((u64)icr2 << 32);
+}
+
+static struct apic_ops xapic_ops = {
+       .read = native_apic_mem_read,
+       .write = native_apic_mem_write,
+       .icr_read = xapic_icr_read,
+       .icr_write = xapic_icr_write,
+       .wait_icr_idle = xapic_wait_icr_idle,
+       .safe_wait_icr_idle = safe_xapic_wait_icr_idle,
+};
+
+struct apic_ops __read_mostly *apic_ops = &xapic_ops;
+EXPORT_SYMBOL_GPL(apic_ops);
+
 /**
  * enable_NMI_through_LVT0 - enable NMI through local vector table 0
  */
@@ -1213,7 +1246,7 @@ void __init init_apic_mappings(void)
         * default configuration (or the MP table is broken).
         */
        if (boot_cpu_physical_apicid == -1U)
-               boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
+               boot_cpu_physical_apicid = read_apic_id();
 
 }
 
@@ -1250,7 +1283,7 @@ int __init APIC_init_uniprocessor(void)
         * might be zero if read from MP tables. Get it from LAPIC.
         */
 #ifdef CONFIG_CRASH_DUMP
-       boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id());
+       boot_cpu_physical_apicid = read_apic_id();
 #endif
        physid_set_mask_of_physid(boot_cpu_physical_apicid, &phys_cpu_present_map);
 
@@ -1329,54 +1362,6 @@ void smp_error_interrupt(struct pt_regs *regs)
        irq_exit();
 }
 
-#ifdef CONFIG_SMP
-void __init smp_intr_init(void)
-{
-       /*
-        * IRQ0 must be given a fixed assignment and initialized,
-        * because it's used before the IO-APIC is set up.
-        */
-       set_intr_gate(FIRST_DEVICE_VECTOR, interrupt[0]);
-
-       /*
-        * The reschedule interrupt is a CPU-to-CPU reschedule-helper
-        * IPI, driven by wakeup.
-        */
-       alloc_intr_gate(RESCHEDULE_VECTOR, reschedule_interrupt);
-
-       /* IPI for invalidation */
-       alloc_intr_gate(INVALIDATE_TLB_VECTOR, invalidate_interrupt);
-
-       /* IPI for generic function call */
-       alloc_intr_gate(CALL_FUNCTION_VECTOR, call_function_interrupt);
-
-       /* IPI for single call function */
-       set_intr_gate(CALL_FUNCTION_SINGLE_VECTOR,
-                               call_function_single_interrupt);
-}
-#endif
-
-/*
- * Initialize APIC interrupts
- */
-void __init apic_intr_init(void)
-{
-#ifdef CONFIG_SMP
-       smp_intr_init();
-#endif
-       /* self generated IPI for local APIC timer */
-       alloc_intr_gate(LOCAL_TIMER_VECTOR, apic_timer_interrupt);
-
-       /* IPI vectors for APIC spurious and error interrupts */
-       alloc_intr_gate(SPURIOUS_APIC_VECTOR, spurious_interrupt);
-       alloc_intr_gate(ERROR_APIC_VECTOR, error_interrupt);
-
-       /* thermal monitor LVT interrupt */
-#ifdef CONFIG_X86_MCE_P4THERMAL
-       alloc_intr_gate(THERMAL_APIC_VECTOR, thermal_interrupt);
-#endif
-}
-
 /**
  * connect_bsp_APIC - attach the APIC to the interrupt system
  */
@@ -1728,15 +1713,19 @@ static int __init parse_lapic_timer_c2_ok(char *arg)
 }
 early_param("lapic_timer_c2_ok", parse_lapic_timer_c2_ok);
 
-static int __init apic_set_verbosity(char *str)
+static int __init apic_set_verbosity(char *arg)
 {
-       if (strcmp("debug", str) == 0)
+       if (!arg)
+               return -EINVAL;
+
+       if (strcmp(arg, "debug") == 0)
                apic_verbosity = APIC_DEBUG;
-       else if (strcmp("verbose", str) == 0)
+       else if (strcmp(arg, "verbose") == 0)
                apic_verbosity = APIC_VERBOSE;
-       return 1;
+
+       return 0;
 }
-__setup("apic=", apic_set_verbosity);
+early_param("apic", apic_set_verbosity);
 
 static int __init lapic_insert_resource(void)
 {