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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 18:20:36 -0400
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/asm-i386/mach-default/smpboot_hooks.h
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/asm-i386/mach-default/smpboot_hooks.h')
-rw-r--r--include/asm-i386/mach-default/smpboot_hooks.h44
1 files changed, 44 insertions, 0 deletions
diff --git a/include/asm-i386/mach-default/smpboot_hooks.h b/include/asm-i386/mach-default/smpboot_hooks.h
new file mode 100644
index 000000000000..7f45f6311059
--- /dev/null
+++ b/include/asm-i386/mach-default/smpboot_hooks.h
@@ -0,0 +1,44 @@
1/* two abstractions specific to kernel/smpboot.c, mainly to cater to visws
2 * which needs to alter them. */
3
4static inline void smpboot_clear_io_apic_irqs(void)
5{
6 io_apic_irqs = 0;
7}
8
9static inline void smpboot_setup_warm_reset_vector(unsigned long start_eip)
10{
11 CMOS_WRITE(0xa, 0xf);
12 local_flush_tlb();
13 Dprintk("1.\n");
14 *((volatile unsigned short *) TRAMPOLINE_HIGH) = start_eip >> 4;
15 Dprintk("2.\n");
16 *((volatile unsigned short *) TRAMPOLINE_LOW) = start_eip & 0xf;
17 Dprintk("3.\n");
18}
19
20static inline void smpboot_restore_warm_reset_vector(void)
21{
22 /*
23 * Install writable page 0 entry to set BIOS data area.
24 */
25 local_flush_tlb();
26
27 /*
28 * Paranoid: Set warm reset code and vector here back
29 * to default values.
30 */
31 CMOS_WRITE(0, 0xf);
32
33 *((volatile long *) phys_to_virt(0x467)) = 0;
34}
35
36static inline void smpboot_setup_io_apic(void)
37{
38 /*
39 * Here we can be sure that there is an IO-APIC in the system. Let's
40 * go and set it up:
41 */
42 if (!skip_ioapic_setup && nr_ioapics)
43 setup_IO_APIC();
44}