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authorIngo Molnar <mingo@elte.hu>2008-07-10 15:06:07 +0200
committerIngo Molnar <mingo@elte.hu>2008-07-10 18:55:36 +0200
commit244a5e2ee0ba204d66dfe4273df91c6bc65a310a (patch)
tree555835890424a8bf6ae2c094660620cdeed60e0b /include/asm-x86
parent6a64b5da9bbe561fd189361812f5ed205bb55345 (diff)
x86, VisWS: turn into generic arch, update include/asm-x86/mach-visws/smpboot_hooks.h
update include/asm-x86/mach-visws/smpboot_hooks.h to include/asm-x86/mach-default/smpboot_hooks.h (the generic version). this _should_ work, because VISWS sets skip_ioapic_setup, but it should be tested on a real VISWS to make sure. Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86')
-rw-r--r--include/asm-x86/mach-visws/smpboot_hooks.h45
1 files changed, 38 insertions, 7 deletions
diff --git a/include/asm-x86/mach-visws/smpboot_hooks.h b/include/asm-x86/mach-visws/smpboot_hooks.h
index c9b83e395a2e..56d001b9dce4 100644
--- a/include/asm-x86/mach-visws/smpboot_hooks.h
+++ b/include/asm-x86/mach-visws/smpboot_hooks.h
@@ -1,3 +1,13 @@
+/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
+ * which needs to alter them. */
+
+static inline void smpboot_clear_io_apic_irqs(void)
+{
+#ifdef CONFIG_X86_IO_APIC
+ io_apic_irqs = 0;
+#endif
+}
+
static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
{
CMOS_WRITE(0xa, 0xf);
@@ -9,20 +19,41 @@ static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
Dprintk("3.\n");
}
-/* for visws do nothing for any of these */
-
-static inline void smpboot_clear_io_apic_irqs(void)
-{
-}
-
static inline void smpboot_restore_warm_reset_vector(void)
{
+ /*
+ * Install writable page 0 entry to set BIOS data area.
+ */
+ local_flush_tlb();
+
+ /*
+ * Paranoid: Set warm reset code and vector here back
+ * to default values.
+ */
+ CMOS_WRITE(0, 0xf);
+
+ *((volatile long *) phys_to_virt(0x467)) = 0;
}
-static inline void smpboot_setup_io_apic(void)
+static inline void __init smpboot_setup_io_apic(void)
{
+#ifdef CONFIG_X86_IO_APIC
+ /*
+ * Here we can be sure that there is an IO-APIC in the system. Let's
+ * go and set it up:
+ */
+ if (!skip_ioapic_setup && nr_ioapics)
+ setup_IO_APIC();
+ else {
+ nr_ioapics = 0;
+ localise_nmi_watchdog();
+ }
+#endif
}
static inline void smpboot_clear_io_apic(void)
{
+#ifdef CONFIG_X86_IO_APIC
+ nr_ioapics = 0;
+#endif
}