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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> | |
6 | #include <linux/init.h> | |
1b9b89e7 YL |
7 | #include <linux/dmar.h> |
8 | ||
2d9579a1 | 9 | #include <asm/smp.h> |
79deb8e5 | 10 | #include <asm/x2apic.h> |
2d9579a1 | 11 | |
ef1f87aa | 12 | int x2apic_phys; |
1b9b89e7 | 13 | |
1a8880a1 SS |
14 | static struct apic apic_x2apic_phys; |
15 | ||
1b9b89e7 YL |
16 | static int set_x2apic_phys_mode(char *arg) |
17 | { | |
18 | x2apic_phys = 1; | |
19 | return 0; | |
20 | } | |
21 | early_param("x2apic_phys", set_x2apic_phys_mode); | |
22 | ||
3cfba089 | 23 | static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1b9b89e7 | 24 | { |
ef1f87aa SS |
25 | if (x2apic_phys) |
26 | return x2apic_enabled(); | |
27 | else | |
28 | return 0; | |
1b9b89e7 | 29 | } |
2d9579a1 | 30 | |
a27d0b5e SS |
31 | static void |
32 | __x2apic_send_IPI_mask(const struct cpumask *mask, int vector, int apic_dest) | |
2d9579a1 | 33 | { |
2d9579a1 | 34 | unsigned long query_cpu; |
a27d0b5e | 35 | unsigned long this_cpu; |
dac5f412 | 36 | unsigned long flags; |
2d9579a1 | 37 | |
ce4e240c SS |
38 | x2apic_wrmsr_fence(); |
39 | ||
2d9579a1 | 40 | local_irq_save(flags); |
a27d0b5e SS |
41 | |
42 | this_cpu = smp_processor_id(); | |
bcda016e | 43 | for_each_cpu(query_cpu, mask) { |
a27d0b5e SS |
44 | if (apic_dest == APIC_DEST_ALLBUT && this_cpu == query_cpu) |
45 | continue; | |
2d9579a1 SS |
46 | __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu), |
47 | vector, APIC_DEST_PHYSICAL); | |
48 | } | |
49 | local_irq_restore(flags); | |
50 | } | |
51 | ||
a27d0b5e SS |
52 | static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector) |
53 | { | |
54 | __x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLINC); | |
55 | } | |
56 | ||
dac5f412 IM |
57 | static void |
58 | x2apic_send_IPI_mask_allbutself(const struct cpumask *mask, int vector) | |
2d9579a1 | 59 | { |
a27d0b5e | 60 | __x2apic_send_IPI_mask(mask, vector, APIC_DEST_ALLBUT); |
e7986739 | 61 | } |
2d9579a1 | 62 | |
e7986739 MT |
63 | static void x2apic_send_IPI_allbutself(int vector) |
64 | { | |
a27d0b5e | 65 | __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLBUT); |
2d9579a1 SS |
66 | } |
67 | ||
68 | static void x2apic_send_IPI_all(int vector) | |
69 | { | |
a27d0b5e | 70 | __x2apic_send_IPI_mask(cpu_online_mask, vector, APIC_DEST_ALLINC); |
2d9579a1 SS |
71 | } |
72 | ||
bcda016e | 73 | static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask) |
2d9579a1 | 74 | { |
2d9579a1 SS |
75 | /* |
76 | * We're using fixed IRQ delivery, can only return one phys APIC ID. | |
77 | * May as well be the first. | |
78 | */ | |
debccb3e IM |
79 | int cpu = cpumask_first(cpumask); |
80 | ||
e7986739 | 81 | if ((unsigned)cpu < nr_cpu_ids) |
2d9579a1 SS |
82 | return per_cpu(x86_cpu_to_apicid, cpu); |
83 | else | |
84 | return BAD_APICID; | |
85 | } | |
86 | ||
debccb3e IM |
87 | static unsigned int |
88 | x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask, | |
89 | const struct cpumask *andmask) | |
95d313cf MT |
90 | { |
91 | int cpu; | |
92 | ||
93 | /* | |
94 | * We're using fixed IRQ delivery, can only return one phys APIC ID. | |
95 | * May as well be the first. | |
96 | */ | |
debccb3e | 97 | for_each_cpu_and(cpu, cpumask, andmask) { |
a775a38b MT |
98 | if (cpumask_test_cpu(cpu, cpu_online_mask)) |
99 | break; | |
debccb3e IM |
100 | } |
101 | ||
18374d89 | 102 | return per_cpu(x86_cpu_to_apicid, cpu); |
95d313cf MT |
103 | } |
104 | ||
4d08d97f | 105 | static void init_x2apic_ldr(void) |
2d9579a1 | 106 | { |
2d9579a1 SS |
107 | } |
108 | ||
9ebd680b SS |
109 | static int x2apic_phys_probe(void) |
110 | { | |
111 | if (x2apic_mode && x2apic_phys) | |
112 | return 1; | |
113 | ||
114 | return apic == &apic_x2apic_phys; | |
115 | } | |
116 | ||
1a8880a1 | 117 | static struct apic apic_x2apic_phys = { |
05c155c2 IM |
118 | |
119 | .name = "physical x2apic", | |
9ebd680b | 120 | .probe = x2apic_phys_probe, |
05c155c2 IM |
121 | .acpi_madt_oem_check = x2apic_acpi_madt_oem_check, |
122 | .apic_id_registered = x2apic_apic_id_registered, | |
123 | ||
f8987a10 | 124 | .irq_delivery_mode = dest_Fixed, |
0b06e734 | 125 | .irq_dest_mode = 0, /* physical */ |
05c155c2 IM |
126 | |
127 | .target_cpus = x2apic_target_cpus, | |
08125d3e | 128 | .disable_esr = 0, |
bdb1a9b6 | 129 | .dest_logical = 0, |
05c155c2 IM |
130 | .check_apicid_used = NULL, |
131 | .check_apicid_present = NULL, | |
132 | ||
05c155c2 IM |
133 | .vector_allocation_domain = x2apic_vector_allocation_domain, |
134 | .init_apic_ldr = init_x2apic_ldr, | |
135 | ||
136 | .ioapic_phys_id_map = NULL, | |
137 | .setup_apic_routing = NULL, | |
138 | .multi_timer_check = NULL, | |
a21769a4 | 139 | .cpu_present_to_apicid = default_cpu_present_to_apicid, |
05c155c2 IM |
140 | .apicid_to_cpu_present = NULL, |
141 | .setup_portio_remap = NULL, | |
a27a6210 | 142 | .check_phys_apicid_present = default_check_phys_apicid_present, |
05c155c2 | 143 | .enable_apic_mode = NULL, |
d4c9a9f3 | 144 | .phys_pkg_id = x2apic_phys_pkg_id, |
05c155c2 IM |
145 | .mps_oem_check = NULL, |
146 | ||
79deb8e5 CG |
147 | .get_apic_id = x2apic_get_apic_id, |
148 | .set_apic_id = x2apic_set_apic_id, | |
05c155c2 IM |
149 | .apic_id_mask = 0xFFFFFFFFu, |
150 | ||
151 | .cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid, | |
152 | .cpu_mask_to_apicid_and = x2apic_cpu_mask_to_apicid_and, | |
153 | ||
154 | .send_IPI_mask = x2apic_send_IPI_mask, | |
155 | .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself, | |
156 | .send_IPI_allbutself = x2apic_send_IPI_allbutself, | |
157 | .send_IPI_all = x2apic_send_IPI_all, | |
158 | .send_IPI_self = x2apic_send_IPI_self, | |
159 | ||
abfa584c IM |
160 | .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, |
161 | .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, | |
05c155c2 IM |
162 | .wait_for_init_deassert = NULL, |
163 | .smp_callin_clear_local_apic = NULL, | |
05c155c2 | 164 | .inquire_remote_apic = NULL, |
c1eeb2de YL |
165 | |
166 | .read = native_apic_msr_read, | |
167 | .write = native_apic_msr_write, | |
168 | .icr_read = native_x2apic_icr_read, | |
169 | .icr_write = native_x2apic_icr_write, | |
170 | .wait_icr_idle = native_x2apic_wait_icr_idle, | |
171 | .safe_wait_icr_idle = native_safe_x2apic_wait_icr_idle, | |
2d9579a1 | 172 | }; |
107e0e0c SS |
173 | |
174 | apic_driver(apic_x2apic_phys); |