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x86, VisWS: turn into generic arch, update include/asm-x86/mach-visws/smpboot_hooks.h
[linux-2.6.git] / include / asm-x86 / mach-visws / smpboot_hooks.h
1 /* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
2  * which needs to alter them. */
3
4 static inline void smpboot_clear_io_apic_irqs(void)
5 {
6 #ifdef CONFIG_X86_IO_APIC
7         io_apic_irqs = 0;
8 #endif
9 }
10
11 static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
12 {
13         CMOS_WRITE(0xa, 0xf);
14         local_flush_tlb();
15         Dprintk("1.\n");
16         *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4;
17         Dprintk("2.\n");
18         *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf;
19         Dprintk("3.\n");
20 }
21
22 static inline void smpboot_restore_warm_reset_vector(void)
23 {
24         /*
25          * Install writable page 0 entry to set BIOS data area.
26          */
27         local_flush_tlb();
28
29         /*
30          * Paranoid:  Set warm reset code and vector here back
31          * to default values.
32          */
33         CMOS_WRITE(0, 0xf);
34
35         *((volatile long *) phys_to_virt(0x467)) = 0;
36 }
37
38 static inline void __init smpboot_setup_io_apic(void)
39 {
40 #ifdef CONFIG_X86_IO_APIC
41         /*
42          * Here we can be sure that there is an IO-APIC in the system. Let's
43          * go and set it up:
44          */
45         if (!skip_ioapic_setup && nr_ioapics)
46                 setup_IO_APIC();
47         else {
48                 nr_ioapics = 0;
49                 localise_nmi_watchdog();
50         }
51 #endif
52 }
53
54 static inline void smpboot_clear_io_apic(void)
55 {
56 #ifdef CONFIG_X86_IO_APIC
57         nr_ioapics = 0;
58 #endif
59 }