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Commit | Line | Data |
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2d9579a1 SS |
1 | #include <linux/threads.h> |
2 | #include <linux/cpumask.h> | |
3 | #include <linux/string.h> | |
4 | #include <linux/kernel.h> | |
5 | #include <linux/ctype.h> | |
1b9b89e7 YL |
6 | #include <linux/dmar.h> |
7 | ||
2d9579a1 | 8 | #include <asm/smp.h> |
79deb8e5 | 9 | #include <asm/x2apic.h> |
2d9579a1 | 10 | |
ef1f87aa | 11 | int x2apic_phys; |
1b9b89e7 | 12 | |
1a8880a1 SS |
13 | static struct apic apic_x2apic_phys; |
14 | ||
1b9b89e7 YL |
15 | static int set_x2apic_phys_mode(char *arg) |
16 | { | |
17 | x2apic_phys = 1; | |
18 | return 0; | |
19 | } | |
20 | early_param("x2apic_phys", set_x2apic_phys_mode); | |
21 | ||
cb214ede | 22 | static bool x2apic_fadt_phys(void) |
1b9b89e7 | 23 | { |
781674fc | 24 | #ifdef CONFIG_ACPI |
cb214ede SW |
25 | if ((acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) && |
26 | (acpi_gbl_FADT.flags & ACPI_FADT_APIC_PHYSICAL)) { | |
ea0dcf90 | 27 | printk(KERN_DEBUG "System requires x2apic physical mode\n"); |
cb214ede | 28 | return true; |
ea0dcf90 | 29 | } |
781674fc | 30 | #endif |
cb214ede SW |
31 | return false; |
32 | } | |
33 | ||
34 | static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id) | |
35 | { | |
36 | return x2apic_enabled() && (x2apic_phys || x2apic_fadt_phys()); | |
1b9b89e7 | 37 | } |
2d9579a1 | 38 | |
a27d0b5e SS |
39 | static void |
40 | __x2apic_send_IPI_mask(const struct cpumask *mask, int vector, int apic_dest) | |
2d9579a1 | 41 | { |
2d9579a1 | 42 | unsigned long query_cpu; |
a27d0b5e | 43 | unsigned long this_cpu; |
dac5f412 | 44 | unsigned long flags; |
2d9579a1 | 45 | |
ce4e240c SS |
46 | x2apic_wrmsr_fence(); |
47 | ||
2d9579a1 | 48 | local_irq_save(flags); |
a27d0b5e SS |
49 | |
50 | this_cpu = smp_processor_id(); | |
bcda016e | 51 | for_each_cpu(query_cpu, mask) { |
a27d0b5e SS |
52 | if (apic_dest == APIC_DEST_ALLBUT && this_cpu == query_cpu) |
53 | continue; | |
2d9579a1 SS |
54 | __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu), |
55 | vector, APIC_DEST_PHYSICAL); | |
56 | } | |
57 | local_irq_restore(flags); | |
58 | } | |
59 | ||
a27d0b5e SS |
60 | static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector) |
61 | { | |
62 | __x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLINC); | |
63 | } | |
64 | ||
dac5f412 IM |
65 | static void |
66 | x2apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector) | |
2d9579a1 | 67 | { |
a27d0b5e | 68 | __x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLBUT); |
e7986739 | 69 | } |
2d9579a1 | 70 | |
e7986739 MT |
71 | static void x2apic_send_IPI_allbutself(int vector) |
72 | { | |
a27d0b5e | 73 | __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLBUT); |
2d9579a1 SS |
74 | } |
75 | ||
76 | static void x2apic_send_IPI_all(int vector) | |
77 | { | |
a27d0b5e | 78 | __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLINC); |
2d9579a1 SS |
79 | } |
80 | ||
4d08d97f | 81 | static void init_x2apic_ldr(void) |
2d9579a1 | 82 | { |
2d9579a1 SS |
83 | } |
84 | ||
9ebd680b SS |
85 | static int x2apic_phys_probe(void) |
86 | { | |
cb214ede | 87 | if (x2apic_mode && (x2apic_phys || x2apic_fadt_phys())) |
9ebd680b SS |
88 | return 1; |
89 | ||
90 | return apic == &apic_x2apic_phys; | |
91 | } | |
92 | ||
1a8880a1 | 93 | static struct apic apic_x2apic_phys = { |
05c155c2 IM |
94 | |
95 | .name = "physical x2apic", | |
9ebd680b | 96 | .probe = x2apic_phys_probe, |
05c155c2 | 97 | .acpi_madt_oem_check = x2apic_acpi_madt_oem_check, |
b7157acf | 98 | .apic_id_valid = x2apic_apic_id_valid, |
05c155c2 IM |
99 | .apic_id_registered = x2apic_apic_id_registered, |
100 | ||
f8987a10 | 101 | .irq_delivery_mode = dest_Fixed, |
0b06e734 | 102 | .irq_dest_mode = 0, /* physical */ |
05c155c2 | 103 | |
bf721d3a | 104 | .target_cpus = online_target_cpus, |
08125d3e | 105 | .disable_esr = 0, |
bdb1a9b6 | 106 | .dest_logical = 0, |
05c155c2 | 107 | .check_apicid_used = NULL, |
05c155c2 | 108 | |
9d8e1066 | 109 | .vector_allocation_domain = default_vector_allocation_domain, |
05c155c2 IM |
110 | .init_apic_ldr = init_x2apic_ldr, |
111 | ||
112 | .ioapic_phys_id_map = NULL, | |
113 | .setup_apic_routing = NULL, | |
a21769a4 | 114 | .cpu_present_to_apicid = default_cpu_present_to_apicid, |
05c155c2 | 115 | .apicid_to_cpu_present = NULL, |
a27a6210 | 116 | .check_phys_apicid_present = default_check_phys_apicid_present, |
d4c9a9f3 | 117 | .phys_pkg_id = x2apic_phys_pkg_id, |
05c155c2 | 118 | |
79deb8e5 CG |
119 | .get_apic_id = x2apic_get_apic_id, |
120 | .set_apic_id = x2apic_set_apic_id, | |
05c155c2 IM |
121 | .apic_id_mask = 0xFFFFFFFFu, |
122 | ||
6398268d | 123 | .cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and, |
05c155c2 IM |
124 | |
125 | .send_IPI_mask = x2apic_send_IPI_mask, | |
126 | .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself, | |
127 | .send_IPI_allbutself = x2apic_send_IPI_allbutself, | |
128 | .send_IPI_all = x2apic_send_IPI_all, | |
129 | .send_IPI_self = x2apic_send_IPI_self, | |
130 | ||
465822cf | 131 | .wait_for_init_deassert = false, |
05c155c2 | 132 | .inquire_remote_apic = NULL, |
c1eeb2de YL |
133 | |
134 | .read = native_apic_msr_read, | |
135 | .write = native_apic_msr_write, | |
0ab711ae | 136 | .eoi_write = native_apic_msr_eoi_write, |
c1eeb2de YL |
137 | .icr_read = native_x2apic_icr_read, |
138 | .icr_write = native_x2apic_icr_write, | |
139 | .wait_icr_idle = native_x2apic_wait_icr_idle, | |
140 | .safe_wait_icr_idle = native_safe_x2apic_wait_icr_idle, | |
2d9579a1 | 141 | }; |
107e0e0c SS |
142 | |
143 | apic_driver(apic_x2apic_phys); |