x86, mce: remove incorrect __cpuinit for mce_cpu_features()
[linux-2.6] / arch / x86 / kernel / genx2apic_phys.c
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>
7 #include <linux/dmar.h>
8
9 #include <asm/smp.h>
10 #include <asm/ipi.h>
11 #include <asm/genapic.h>
12
13 static int x2apic_phys;
14
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
22 static int x2apic_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
23 {
24         if (cpu_has_x2apic && x2apic_phys)
25                 return 1;
26
27         return 0;
28 }
29
30 /* Start with all IRQs pointing to boot CPU.  IRQ balancing will shift them. */
31
32 static const struct cpumask *x2apic_target_cpus(void)
33 {
34         return cpumask_of(0);
35 }
36
37 static void x2apic_vector_allocation_domain(int cpu, struct cpumask *retmask)
38 {
39         cpumask_clear(retmask);
40         cpumask_set_cpu(cpu, retmask);
41 }
42
43 static void __x2apic_send_IPI_dest(unsigned int apicid, int vector,
44                                    unsigned int dest)
45 {
46         unsigned long cfg;
47
48         cfg = __prepare_ICR(0, vector, dest);
49
50         /*
51          * send the IPI.
52          */
53         x2apic_icr_write(cfg, apicid);
54 }
55
56 static void x2apic_send_IPI_mask(const struct cpumask *mask, int vector)
57 {
58         unsigned long flags;
59         unsigned long query_cpu;
60
61         local_irq_save(flags);
62         for_each_cpu(query_cpu, mask) {
63                 __x2apic_send_IPI_dest(per_cpu(x86_cpu_to_apicid, query_cpu),
64                                        vector, APIC_DEST_PHYSICAL);
65         }
66         local_irq_restore(flags);
67 }
68
69 static void x2apic_send_IPI_mask_allbutself(const struct cpumask *mask,
70                                             int vector)
71 {
72         unsigned long flags;
73         unsigned long query_cpu;
74         unsigned long this_cpu = smp_processor_id();
75
76         local_irq_save(flags);
77         for_each_cpu(query_cpu, mask) {
78                 if (query_cpu != this_cpu)
79                         __x2apic_send_IPI_dest(
80                                 per_cpu(x86_cpu_to_apicid, query_cpu),
81                                 vector, APIC_DEST_PHYSICAL);
82         }
83         local_irq_restore(flags);
84 }
85
86 static void x2apic_send_IPI_allbutself(int vector)
87 {
88         unsigned long flags;
89         unsigned long query_cpu;
90         unsigned long this_cpu = smp_processor_id();
91
92         local_irq_save(flags);
93         for_each_online_cpu(query_cpu)
94                 if (query_cpu != this_cpu)
95                         __x2apic_send_IPI_dest(
96                                 per_cpu(x86_cpu_to_apicid, query_cpu),
97                                 vector, APIC_DEST_PHYSICAL);
98         local_irq_restore(flags);
99 }
100
101 static void x2apic_send_IPI_all(int vector)
102 {
103         x2apic_send_IPI_mask(cpu_online_mask, vector);
104 }
105
106 static int x2apic_apic_id_registered(void)
107 {
108         return 1;
109 }
110
111 static unsigned int x2apic_cpu_mask_to_apicid(const struct cpumask *cpumask)
112 {
113         int cpu;
114
115         /*
116          * We're using fixed IRQ delivery, can only return one phys APIC ID.
117          * May as well be the first.
118          */
119         cpu = cpumask_first(cpumask);
120         if ((unsigned)cpu < nr_cpu_ids)
121                 return per_cpu(x86_cpu_to_apicid, cpu);
122         else
123                 return BAD_APICID;
124 }
125
126 static unsigned int x2apic_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
127                                                   const struct cpumask *andmask)
128 {
129         int cpu;
130
131         /*
132          * We're using fixed IRQ delivery, can only return one phys APIC ID.
133          * May as well be the first.
134          */
135         for_each_cpu_and(cpu, cpumask, andmask)
136                 if (cpumask_test_cpu(cpu, cpu_online_mask))
137                         break;
138         if (cpu < nr_cpu_ids)
139                 return per_cpu(x86_cpu_to_apicid, cpu);
140         return BAD_APICID;
141 }
142
143 static unsigned int get_apic_id(unsigned long x)
144 {
145         unsigned int id;
146
147         id = x;
148         return id;
149 }
150
151 static unsigned long set_apic_id(unsigned int id)
152 {
153         unsigned long x;
154
155         x = id;
156         return x;
157 }
158
159 static unsigned int phys_pkg_id(int index_msb)
160 {
161         return current_cpu_data.initial_apicid >> index_msb;
162 }
163
164 static void x2apic_send_IPI_self(int vector)
165 {
166         apic_write(APIC_SELF_IPI, vector);
167 }
168
169 static void init_x2apic_ldr(void)
170 {
171         return;
172 }
173
174 struct genapic apic_x2apic_phys = {
175         .name = "physical x2apic",
176         .acpi_madt_oem_check = x2apic_acpi_madt_oem_check,
177         .int_delivery_mode = dest_Fixed,
178         .int_dest_mode = (APIC_DEST_PHYSICAL != 0),
179         .target_cpus = x2apic_target_cpus,
180         .vector_allocation_domain = x2apic_vector_allocation_domain,
181         .apic_id_registered = x2apic_apic_id_registered,
182         .init_apic_ldr = init_x2apic_ldr,
183         .send_IPI_all = x2apic_send_IPI_all,
184         .send_IPI_allbutself = x2apic_send_IPI_allbutself,
185         .send_IPI_mask = x2apic_send_IPI_mask,
186         .send_IPI_mask_allbutself = x2apic_send_IPI_mask_allbutself,
187         .send_IPI_self = x2apic_send_IPI_self,
188         .cpu_mask_to_apicid = x2apic_cpu_mask_to_apicid,
189         .cpu_mask_to_apicid_and = x2apic_cpu_mask_to_apicid_and,
190         .phys_pkg_id = phys_pkg_id,
191         .get_apic_id = get_apic_id,
192         .set_apic_id = set_apic_id,
193         .apic_id_mask = (0xFFFFFFFFu),
194 };