diff options
Diffstat (limited to 'arch/x86/kernel/apic/apic_numachip.c')
-rw-r--r-- | arch/x86/kernel/apic/apic_numachip.c | 294 |
1 files changed, 294 insertions, 0 deletions
diff --git a/arch/x86/kernel/apic/apic_numachip.c b/arch/x86/kernel/apic/apic_numachip.c new file mode 100644 index 00000000000..09d3d8c1cd9 --- /dev/null +++ b/arch/x86/kernel/apic/apic_numachip.c | |||
@@ -0,0 +1,294 @@ | |||
1 | /* | ||
2 | * This file is subject to the terms and conditions of the GNU General Public | ||
3 | * License. See the file "COPYING" in the main directory of this archive | ||
4 | * for more details. | ||
5 | * | ||
6 | * Numascale NumaConnect-Specific APIC Code | ||
7 | * | ||
8 | * Copyright (C) 2011 Numascale AS. All rights reserved. | ||
9 | * | ||
10 | * Send feedback to <support@numascale.com> | ||
11 | * | ||
12 | */ | ||
13 | |||
14 | #include <linux/errno.h> | ||
15 | #include <linux/threads.h> | ||
16 | #include <linux/cpumask.h> | ||
17 | #include <linux/string.h> | ||
18 | #include <linux/kernel.h> | ||
19 | #include <linux/module.h> | ||
20 | #include <linux/ctype.h> | ||
21 | #include <linux/init.h> | ||
22 | #include <linux/hardirq.h> | ||
23 | #include <linux/delay.h> | ||
24 | |||
25 | #include <asm/numachip/numachip_csr.h> | ||
26 | #include <asm/smp.h> | ||
27 | #include <asm/apic.h> | ||
28 | #include <asm/ipi.h> | ||
29 | #include <asm/apic_flat_64.h> | ||
30 | |||
31 | static int numachip_system __read_mostly; | ||
32 | |||
33 | static struct apic apic_numachip __read_mostly; | ||
34 | |||
35 | static unsigned int get_apic_id(unsigned long x) | ||
36 | { | ||
37 | unsigned long value; | ||
38 | unsigned int id; | ||
39 | |||
40 | rdmsrl(MSR_FAM10H_NODE_ID, value); | ||
41 | id = ((x >> 24) & 0xffU) | ((value << 2) & 0x3f00U); | ||
42 | |||
43 | return id; | ||
44 | } | ||
45 | |||
46 | static unsigned long set_apic_id(unsigned int id) | ||
47 | { | ||
48 | unsigned long x; | ||
49 | |||
50 | x = ((id & 0xffU) << 24); | ||
51 | return x; | ||
52 | } | ||
53 | |||
54 | static unsigned int read_xapic_id(void) | ||
55 | { | ||
56 | return get_apic_id(apic_read(APIC_ID)); | ||
57 | } | ||
58 | |||
59 | static int numachip_apic_id_registered(void) | ||
60 | { | ||
61 | return physid_isset(read_xapic_id(), phys_cpu_present_map); | ||
62 | } | ||
63 | |||
64 | static int numachip_phys_pkg_id(int initial_apic_id, int index_msb) | ||
65 | { | ||
66 | return initial_apic_id >> index_msb; | ||
67 | } | ||
68 | |||
69 | static const struct cpumask *numachip_target_cpus(void) | ||
70 | { | ||
71 | return cpu_online_mask; | ||
72 | } | ||
73 | |||
74 | static void numachip_vector_allocation_domain(int cpu, struct cpumask *retmask) | ||
75 | { | ||
76 | cpumask_clear(retmask); | ||
77 | cpumask_set_cpu(cpu, retmask); | ||
78 | } | ||
79 | |||
80 | static int __cpuinit numachip_wakeup_secondary(int phys_apicid, unsigned long start_rip) | ||
81 | { | ||
82 | union numachip_csr_g3_ext_irq_gen int_gen; | ||
83 | |||
84 | int_gen.s._destination_apic_id = phys_apicid; | ||
85 | int_gen.s._vector = 0; | ||
86 | int_gen.s._msgtype = APIC_DM_INIT >> 8; | ||
87 | int_gen.s._index = 0; | ||
88 | |||
89 | write_lcsr(CSR_G3_EXT_IRQ_GEN, int_gen.v); | ||
90 | |||
91 | int_gen.s._msgtype = APIC_DM_STARTUP >> 8; | ||
92 | int_gen.s._vector = start_rip >> 12; | ||
93 | |||
94 | write_lcsr(CSR_G3_EXT_IRQ_GEN, int_gen.v); | ||
95 | |||
96 | atomic_set(&init_deasserted, 1); | ||
97 | return 0; | ||
98 | } | ||
99 | |||
100 | static void numachip_send_IPI_one(int cpu, int vector) | ||
101 | { | ||
102 | union numachip_csr_g3_ext_irq_gen int_gen; | ||
103 | int apicid = per_cpu(x86_cpu_to_apicid, cpu); | ||
104 | |||
105 | int_gen.s._destination_apic_id = apicid; | ||
106 | int_gen.s._vector = vector; | ||
107 | int_gen.s._msgtype = (vector == NMI_VECTOR ? APIC_DM_NMI : APIC_DM_FIXED) >> 8; | ||
108 | int_gen.s._index = 0; | ||
109 | |||
110 | write_lcsr(CSR_G3_EXT_IRQ_GEN, int_gen.v); | ||
111 | } | ||
112 | |||
113 | static void numachip_send_IPI_mask(const struct cpumask *mask, int vector) | ||
114 | { | ||
115 | unsigned int cpu; | ||
116 | |||
117 | for_each_cpu(cpu, mask) | ||
118 | numachip_send_IPI_one(cpu, vector); | ||
119 | } | ||
120 | |||
121 | static void numachip_send_IPI_mask_allbutself(const struct cpumask *mask, | ||
122 | int vector) | ||
123 | { | ||
124 | unsigned int this_cpu = smp_processor_id(); | ||
125 | unsigned int cpu; | ||
126 | |||
127 | for_each_cpu(cpu, mask) { | ||
128 | if (cpu != this_cpu) | ||
129 | numachip_send_IPI_one(cpu, vector); | ||
130 | } | ||
131 | } | ||
132 | |||
133 | static void numachip_send_IPI_allbutself(int vector) | ||
134 | { | ||
135 | unsigned int this_cpu = smp_processor_id(); | ||
136 | unsigned int cpu; | ||
137 | |||
138 | for_each_online_cpu(cpu) { | ||
139 | if (cpu != this_cpu) | ||
140 | numachip_send_IPI_one(cpu, vector); | ||
141 | } | ||
142 | } | ||
143 | |||
144 | static void numachip_send_IPI_all(int vector) | ||
145 | { | ||
146 | numachip_send_IPI_mask(cpu_online_mask, vector); | ||
147 | } | ||
148 | |||
149 | static void numachip_send_IPI_self(int vector) | ||
150 | { | ||
151 | __default_send_IPI_shortcut(APIC_DEST_SELF, vector, APIC_DEST_PHYSICAL); | ||
152 | } | ||
153 | |||
154 | static unsigned int numachip_cpu_mask_to_apicid(const struct cpumask *cpumask) | ||
155 | { | ||
156 | int cpu; | ||
157 | |||
158 | /* | ||
159 | * We're using fixed IRQ delivery, can only return one phys APIC ID. | ||
160 | * May as well be the first. | ||
161 | */ | ||
162 | cpu = cpumask_first(cpumask); | ||
163 | if (likely((unsigned)cpu < nr_cpu_ids)) | ||
164 | return per_cpu(x86_cpu_to_apicid, cpu); | ||
165 | |||
166 | return BAD_APICID; | ||
167 | } | ||
168 | |||
169 | static unsigned int | ||
170 | numachip_cpu_mask_to_apicid_and(const struct cpumask *cpumask, | ||
171 | const struct cpumask *andmask) | ||
172 | { | ||
173 | int cpu; | ||
174 | |||
175 | /* | ||
176 | * We're using fixed IRQ delivery, can only return one phys APIC ID. | ||
177 | * May as well be the first. | ||
178 | */ | ||
179 | for_each_cpu_and(cpu, cpumask, andmask) { | ||
180 | if (cpumask_test_cpu(cpu, cpu_online_mask)) | ||
181 | break; | ||
182 | } | ||
183 | return per_cpu(x86_cpu_to_apicid, cpu); | ||
184 | } | ||
185 | |||
186 | static int __init numachip_probe(void) | ||
187 | { | ||
188 | return apic == &apic_numachip; | ||
189 | } | ||
190 | |||
191 | static void __init map_csrs(void) | ||
192 | { | ||
193 | printk(KERN_INFO "NumaChip: Mapping local CSR space (%016llx - %016llx)\n", | ||
194 | NUMACHIP_LCSR_BASE, NUMACHIP_LCSR_BASE + NUMACHIP_LCSR_SIZE - 1); | ||
195 | init_extra_mapping_uc(NUMACHIP_LCSR_BASE, NUMACHIP_LCSR_SIZE); | ||
196 | |||
197 | printk(KERN_INFO "NumaChip: Mapping global CSR space (%016llx - %016llx)\n", | ||
198 | NUMACHIP_GCSR_BASE, NUMACHIP_GCSR_BASE + NUMACHIP_GCSR_SIZE - 1); | ||
199 | init_extra_mapping_uc(NUMACHIP_GCSR_BASE, NUMACHIP_GCSR_SIZE); | ||
200 | } | ||
201 | |||
202 | static void fixup_cpu_id(struct cpuinfo_x86 *c, int node) | ||
203 | { | ||
204 | c->phys_proc_id = node; | ||
205 | per_cpu(cpu_llc_id, smp_processor_id()) = node; | ||
206 | } | ||
207 | |||
208 | static int __init numachip_system_init(void) | ||
209 | { | ||
210 | unsigned int val; | ||
211 | |||
212 | if (!numachip_system) | ||
213 | return 0; | ||
214 | |||
215 | x86_cpuinit.fixup_cpu_id = fixup_cpu_id; | ||
216 | |||
217 | map_csrs(); | ||
218 | |||
219 | val = read_lcsr(CSR_G0_NODE_IDS); | ||
220 | printk(KERN_INFO "NumaChip: Local NodeID = %08x\n", val); | ||
221 | |||
222 | return 0; | ||
223 | } | ||
224 | early_initcall(numachip_system_init); | ||
225 | |||
226 | static int numachip_acpi_madt_oem_check(char *oem_id, char *oem_table_id) | ||
227 | { | ||
228 | if (!strncmp(oem_id, "NUMASC", 6)) { | ||
229 | numachip_system = 1; | ||
230 | return 1; | ||
231 | } | ||
232 | |||
233 | return 0; | ||
234 | } | ||
235 | |||
236 | static struct apic apic_numachip __refconst = { | ||
237 | |||
238 | .name = "NumaConnect system", | ||
239 | .probe = numachip_probe, | ||
240 | .acpi_madt_oem_check = numachip_acpi_madt_oem_check, | ||
241 | .apic_id_registered = numachip_apic_id_registered, | ||
242 | |||
243 | .irq_delivery_mode = dest_Fixed, | ||
244 | .irq_dest_mode = 0, /* physical */ | ||
245 | |||
246 | .target_cpus = numachip_target_cpus, | ||
247 | .disable_esr = 0, | ||
248 | .dest_logical = 0, | ||
249 | .check_apicid_used = NULL, | ||
250 | .check_apicid_present = NULL, | ||
251 | |||
252 | .vector_allocation_domain = numachip_vector_allocation_domain, | ||
253 | .init_apic_ldr = flat_init_apic_ldr, | ||
254 | |||
255 | .ioapic_phys_id_map = NULL, | ||
256 | .setup_apic_routing = NULL, | ||
257 | .multi_timer_check = NULL, | ||
258 | .cpu_present_to_apicid = default_cpu_present_to_apicid, | ||
259 | .apicid_to_cpu_present = NULL, | ||
260 | .setup_portio_remap = NULL, | ||
261 | .check_phys_apicid_present = default_check_phys_apicid_present, | ||
262 | .enable_apic_mode = NULL, | ||
263 | .phys_pkg_id = numachip_phys_pkg_id, | ||
264 | .mps_oem_check = NULL, | ||
265 | |||
266 | .get_apic_id = get_apic_id, | ||
267 | .set_apic_id = set_apic_id, | ||
268 | .apic_id_mask = 0xffU << 24, | ||
269 | |||
270 | .cpu_mask_to_apicid = numachip_cpu_mask_to_apicid, | ||
271 | .cpu_mask_to_apicid_and = numachip_cpu_mask_to_apicid_and, | ||
272 | |||
273 | .send_IPI_mask = numachip_send_IPI_mask, | ||
274 | .send_IPI_mask_allbutself = numachip_send_IPI_mask_allbutself, | ||
275 | .send_IPI_allbutself = numachip_send_IPI_allbutself, | ||
276 | .send_IPI_all = numachip_send_IPI_all, | ||
277 | .send_IPI_self = numachip_send_IPI_self, | ||
278 | |||
279 | .wakeup_secondary_cpu = numachip_wakeup_secondary, | ||
280 | .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, | ||
281 | .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, | ||
282 | .wait_for_init_deassert = NULL, | ||
283 | .smp_callin_clear_local_apic = NULL, | ||
284 | .inquire_remote_apic = NULL, /* REMRD not supported */ | ||
285 | |||
286 | .read = native_apic_mem_read, | ||
287 | .write = native_apic_mem_write, | ||
288 | .icr_read = native_apic_icr_read, | ||
289 | .icr_write = native_apic_icr_write, | ||
290 | .wait_icr_idle = native_apic_wait_icr_idle, | ||
291 | .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, | ||
292 | }; | ||
293 | apic_driver(apic_numachip); | ||
294 | |||