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-rw-r--r--arch/x86/include/asm/apic.h6
-rw-r--r--arch/x86/kernel/apic/apic.c51
-rw-r--r--arch/x86/kernel/smpboot.c27
3 files changed, 47 insertions, 37 deletions
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index ac60c60..92f3404 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -201,7 +201,6 @@ extern int get_physical_broadcast(void);
extern int lapic_get_maxlvt(void);
extern void clear_local_APIC(void);
-extern void connect_bsp_APIC(void);
extern void disconnect_bsp_APIC(int virt_wire_setup);
extern void disable_local_APIC(void);
extern void lapic_shutdown(void);
@@ -209,8 +208,6 @@ extern int verify_local_APIC(void);
extern void sync_Arb_IDs(void);
extern void init_bsp_APIC(void);
extern void setup_local_APIC(void);
-extern void end_local_APIC_setup(void);
-extern void bsp_end_local_APIC_setup(void);
extern void init_apic_mappings(void);
void register_lapic_address(unsigned long address);
extern void setup_boot_APIC_clock(void);
@@ -218,6 +215,9 @@ extern void setup_secondary_APIC_clock(void);
extern int APIC_init_uniprocessor(void);
extern int apic_force_enable(unsigned long addr);
+extern int apic_bsp_setup(void);
+extern void apic_ap_setup(void);
+
/*
* On 32bit this is mach-xxx local
*/
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 19f1bc7..0a41070 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -1445,7 +1445,7 @@ void setup_local_APIC(void)
#endif
}
-void end_local_APIC_setup(void)
+static void end_local_APIC_setup(void)
{
lapic_setup_esr();
@@ -1462,16 +1462,13 @@ void end_local_APIC_setup(void)
apic_pm_activate();
}
-void __init bsp_end_local_APIC_setup(void)
+/*
+ * APIC setup function for application processors. Called from smpboot.c
+ */
+void apic_ap_setup(void)
{
+ setup_local_APIC();
end_local_APIC_setup();
-
- /*
- * Now that local APIC setup is completed for BP, configure the fault
- * handling for interrupt remapping.
- */
- irq_remap_enable_fault_handling();
-
}
#ifdef CONFIG_X86_X2APIC
@@ -1958,7 +1955,7 @@ __visible void smp_trace_error_interrupt(struct pt_regs *regs)
/**
* connect_bsp_APIC - attach the APIC to the interrupt system
*/
-void __init connect_bsp_APIC(void)
+static void __init connect_bsp_APIC(void)
{
#ifdef CONFIG_X86_32
if (pic_mode) {
@@ -2205,6 +2202,40 @@ void __init apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v))
}
}
+static void __init bsp_end_local_APIC_setup(void)
+{
+ end_local_APIC_setup();
+ /*
+ * Now that local APIC setup is completed for BP, configure the fault
+ * handling for interrupt remapping.
+ */
+ irq_remap_enable_fault_handling();
+}
+
+/**
+ * apic_bsp_setup - Setup function for local apic and io-apic
+ *
+ * Returns:
+ * apic_id of BSP APIC
+ */
+int __init apic_bsp_setup(void)
+{
+ int id;
+
+ connect_bsp_APIC();
+ setup_local_APIC();
+
+ if (x2apic_mode)
+ id = apic_read(APIC_LDR);
+ else
+ id = GET_APIC_LOGICAL_ID(apic_read(APIC_LDR));
+
+ enable_IO_APIC();
+ bsp_end_local_APIC_setup();
+ setup_IO_APIC();
+ return id;
+}
+
/*
* This initializes the IO-APIC and APIC hardware if this is
* a UP kernel.
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c
index ca7f7b6..d538709 100644
--- a/arch/x86/kernel/smpboot.c
+++ b/arch/x86/kernel/smpboot.c
@@ -172,8 +172,7 @@ static void smp_callin(void)
* CPU, first the APIC. (this is probably redundant on most
* boards)
*/
- setup_local_APIC();
- end_local_APIC_setup();
+ apic_ap_setup();
/*
* Need to setup vector mappings before we enable interrupts.
@@ -1078,7 +1077,6 @@ static int __init smp_sanity_check(unsigned max_cpus)
boot_cpu_physical_apicid);
pr_err("... forcing use of dummy APIC emulation (tell your hw vendor)\n");
}
- disable_ioapic_support();
return -1;
}
@@ -1090,10 +1088,7 @@ static int __init smp_sanity_check(unsigned max_cpus)
if (!max_cpus) {
pr_info("SMP mode deactivated\n");
disable_ioapic_support();
-
- connect_bsp_APIC();
- setup_local_APIC();
- bsp_end_local_APIC_setup();
+ apic_bsp_setup();
return -1;
}
@@ -1151,23 +1146,7 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
/* Or can we switch back to PIC here? */
}
- connect_bsp_APIC();
-
- /*
- * Switch from PIC to APIC mode.
- */
- setup_local_APIC();
-
- if (x2apic_mode)
- cpu0_logical_apicid = apic_read(APIC_LDR);
- else
- cpu0_logical_apicid = GET_APIC_LOGICAL_ID(apic_read(APIC_LDR));
-
- /* Enable IO APIC before setting up error vector */
- enable_IO_APIC();
-
- bsp_end_local_APIC_setup();
- setup_IO_APIC();
+ cpu0_logical_apicid = apic_bsp_setup();
/*
* Set up local APIC timer on boot CPU.