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1da177e4 LT |
1 | /* |
2 | * Copyright 2004 James Cleverdon, IBM. | |
3 | * Subject to the GNU Public License, v.2 | |
4 | * | |
5 | * Generic APIC sub-arch probe layer. | |
6 | * | |
7 | * Hacked for x86-64 by James Cleverdon from i386 architecture code by | |
8 | * Martin Bligh, Andi Kleen, James Bottomley, John Stultz, and | |
9 | * James Cleverdon. | |
10 | */ | |
1da177e4 LT |
11 | #include <linux/threads.h> |
12 | #include <linux/cpumask.h> | |
13 | #include <linux/string.h> | |
186f4360 | 14 | #include <linux/init.h> |
1da177e4 LT |
15 | #include <linux/kernel.h> |
16 | #include <linux/ctype.h> | |
17 | #include <linux/init.h> | |
ac23d4ee | 18 | #include <linux/hardirq.h> |
d25ae38b | 19 | #include <linux/dmar.h> |
1da177e4 LT |
20 | |
21 | #include <asm/smp.h> | |
7b6aa335 | 22 | #include <asm/apic.h> |
c1eeb2de | 23 | #include <asm/ipi.h> |
54ac14a8 | 24 | #include <asm/setup.h> |
1da177e4 | 25 | |
1da177e4 LT |
26 | /* |
27 | * Check the APIC IDs in bios_cpu_apicid and choose the APIC mode. | |
28 | */ | |
72ce0165 | 29 | void __init default_setup_apic_routing(void) |
1da177e4 | 30 | { |
8b37e880 | 31 | struct apic **drv; |
fa47f7e5 SS |
32 | |
33 | enable_IR_x2apic(); | |
34 | ||
8b37e880 SS |
35 | for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) { |
36 | if ((*drv)->probe && (*drv)->probe()) { | |
37 | if (apic != *drv) { | |
38 | apic = *drv; | |
39 | pr_info("Switched APIC routing to %s.\n", | |
40 | apic->name); | |
41 | } | |
9ebd680b SS |
42 | break; |
43 | } | |
d25ae38b | 44 | } |
bb668da6 | 45 | |
7db971b2 IY |
46 | if (x86_platform.apic_post_init) |
47 | x86_platform.apic_post_init(); | |
1da177e4 LT |
48 | } |
49 | ||
07c7c474 | 50 | /* Same for both flat and physical. */ |
1da177e4 | 51 | |
cff73a6f | 52 | void apic_send_IPI_self(int vector) |
1da177e4 | 53 | { |
dac5f412 | 54 | __default_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL); |
1da177e4 | 55 | } |
ae261868 | 56 | |
306db03b | 57 | int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
ae261868 | 58 | { |
8b37e880 | 59 | struct apic **drv; |
1b9b89e7 | 60 | |
8b37e880 SS |
61 | for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) { |
62 | if ((*drv)->acpi_madt_oem_check(oem_id, oem_table_id)) { | |
63 | if (apic != *drv) { | |
64 | apic = *drv; | |
65 | pr_info("Setting APIC routing to %s.\n", | |
66 | apic->name); | |
67 | } | |
1b9b89e7 YL |
68 | return 1; |
69 | } | |
ae261868 JS |
70 | } |
71 | return 0; | |
72 | } |