Commit | Line | Data |
---|---|---|
9b0c5028 | 1 | /* |
7b387253 IM |
2 | * Default generic APIC driver. This handles up to 8 CPUs. |
3 | * | |
9b0c5028 PC |
4 | * Copyright 2003 Andi Kleen, SuSE Labs. |
5 | * Subject to the GNU Public License, v.2 | |
6 | * | |
1da177e4 | 7 | * Generic x86 APIC driver probe layer. |
9b0c5028 | 8 | */ |
1da177e4 LT |
9 | #include <linux/threads.h> |
10 | #include <linux/cpumask.h> | |
7d01d32d | 11 | #include <linux/module.h> |
1da177e4 LT |
12 | #include <linux/string.h> |
13 | #include <linux/kernel.h> | |
14 | #include <linux/ctype.h> | |
15 | #include <linux/init.h> | |
1a3f239d | 16 | #include <linux/errno.h> |
1da177e4 LT |
17 | #include <asm/fixmap.h> |
18 | #include <asm/mpspec.h> | |
19 | #include <asm/apicdef.h> | |
7b6aa335 | 20 | #include <asm/apic.h> |
54ac14a8 | 21 | #include <asm/setup.h> |
1da177e4 | 22 | |
7b387253 IM |
23 | #include <linux/threads.h> |
24 | #include <linux/cpumask.h> | |
25 | #include <asm/mpspec.h> | |
7b6aa335 | 26 | #include <asm/apic.h> |
7b387253 IM |
27 | #include <asm/fixmap.h> |
28 | #include <asm/apicdef.h> | |
29 | #include <linux/kernel.h> | |
30 | #include <linux/string.h> | |
31 | #include <linux/smp.h> | |
32 | #include <linux/init.h> | |
7b6aa335 | 33 | #include <asm/apic.h> |
7b387253 IM |
34 | #include <asm/ipi.h> |
35 | ||
6bda2c8b IM |
36 | #include <linux/smp.h> |
37 | #include <linux/init.h> | |
38 | #include <linux/interrupt.h> | |
39 | #include <asm/acpi.h> | |
40 | #include <asm/arch_hooks.h> | |
41 | #include <asm/e820.h> | |
42 | #include <asm/setup.h> | |
43 | ||
7b6aa335 | 44 | #include <asm/apic.h> |
6bda2c8b IM |
45 | |
46 | #ifdef CONFIG_HOTPLUG_CPU | |
47 | #define DEFAULT_SEND_IPI (1) | |
48 | #else | |
49 | #define DEFAULT_SEND_IPI (0) | |
50 | #endif | |
51 | ||
52 | int no_broadcast = DEFAULT_SEND_IPI; | |
53 | ||
54 | #ifdef CONFIG_X86_LOCAL_APIC | |
55 | ||
28aa29ee IM |
56 | void default_setup_apic_routing(void) |
57 | { | |
58 | #ifdef CONFIG_X86_IO_APIC | |
59 | printk(KERN_INFO | |
60 | "Enabling APIC mode: Flat. Using %d I/O APICs\n", | |
61 | nr_ioapics); | |
62 | #endif | |
63 | } | |
64 | ||
7b387253 IM |
65 | static void default_vector_allocation_domain(int cpu, struct cpumask *retmask) |
66 | { | |
67 | /* | |
68 | * Careful. Some cpus do not strictly honor the set of cpus | |
69 | * specified in the interrupt destination when using lowest | |
70 | * priority interrupt delivery mode. | |
71 | * | |
72 | * In particular there was a hyperthreading cpu observed to | |
73 | * deliver interrupts to the wrong hyperthread when only one | |
74 | * hyperthread was specified in the interrupt desitination. | |
75 | */ | |
76 | *retmask = (cpumask_t) { { [0] = APIC_ALL_CPUS } }; | |
77 | } | |
78 | ||
79 | /* should be called last. */ | |
80 | static int probe_default(void) | |
81 | { | |
82 | return 1; | |
83 | } | |
84 | ||
85 | struct genapic apic_default = { | |
86 | ||
87 | .name = "default", | |
88 | .probe = probe_default, | |
89 | .acpi_madt_oem_check = NULL, | |
90 | .apic_id_registered = default_apic_id_registered, | |
91 | ||
92 | .irq_delivery_mode = dest_LowestPrio, | |
93 | /* logical delivery broadcast to all CPUs: */ | |
94 | .irq_dest_mode = 1, | |
95 | ||
96 | .target_cpus = default_target_cpus, | |
97 | .disable_esr = 0, | |
98 | .dest_logical = APIC_DEST_LOGICAL, | |
99 | .check_apicid_used = default_check_apicid_used, | |
100 | .check_apicid_present = default_check_apicid_present, | |
101 | ||
102 | .vector_allocation_domain = default_vector_allocation_domain, | |
103 | .init_apic_ldr = default_init_apic_ldr, | |
104 | ||
105 | .ioapic_phys_id_map = default_ioapic_phys_id_map, | |
106 | .setup_apic_routing = default_setup_apic_routing, | |
107 | .multi_timer_check = NULL, | |
108 | .apicid_to_node = default_apicid_to_node, | |
109 | .cpu_to_logical_apicid = default_cpu_to_logical_apicid, | |
110 | .cpu_present_to_apicid = default_cpu_present_to_apicid, | |
111 | .apicid_to_cpu_present = default_apicid_to_cpu_present, | |
112 | .setup_portio_remap = NULL, | |
113 | .check_phys_apicid_present = default_check_phys_apicid_present, | |
114 | .enable_apic_mode = NULL, | |
115 | .phys_pkg_id = default_phys_pkg_id, | |
116 | .mps_oem_check = NULL, | |
117 | ||
118 | .get_apic_id = default_get_apic_id, | |
119 | .set_apic_id = NULL, | |
120 | .apic_id_mask = 0x0F << 24, | |
121 | ||
122 | .cpu_mask_to_apicid = default_cpu_mask_to_apicid, | |
123 | .cpu_mask_to_apicid_and = default_cpu_mask_to_apicid_and, | |
124 | ||
43f39890 YL |
125 | .send_IPI_mask = default_send_IPI_mask_logical, |
126 | .send_IPI_mask_allbutself = default_send_IPI_mask_allbutself_logical, | |
7b387253 IM |
127 | .send_IPI_allbutself = default_send_IPI_allbutself, |
128 | .send_IPI_all = default_send_IPI_all, | |
6b64ee02 | 129 | .send_IPI_self = default_send_IPI_self, |
7b387253 IM |
130 | |
131 | .wakeup_cpu = NULL, | |
132 | .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW, | |
133 | .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH, | |
134 | ||
135 | .wait_for_init_deassert = default_wait_for_init_deassert, | |
136 | ||
137 | .smp_callin_clear_local_apic = NULL, | |
138 | .store_NMI_vector = NULL, | |
139 | .inquire_remote_apic = default_inquire_remote_apic, | |
c1eeb2de YL |
140 | |
141 | .read = native_apic_mem_read, | |
142 | .write = native_apic_mem_write, | |
143 | .icr_read = native_apic_icr_read, | |
144 | .icr_write = native_apic_icr_write, | |
145 | .wait_icr_idle = native_apic_wait_icr_idle, | |
146 | .safe_wait_icr_idle = native_safe_apic_wait_icr_idle, | |
7b387253 IM |
147 | }; |
148 | ||
d49c4288 | 149 | extern struct genapic apic_numaq; |
1da177e4 LT |
150 | extern struct genapic apic_summit; |
151 | extern struct genapic apic_bigsmp; | |
152 | extern struct genapic apic_es7000; | |
153 | extern struct genapic apic_default; | |
154 | ||
c8d46cf0 | 155 | struct genapic *apic = &apic_default; |
7d01d32d | 156 | EXPORT_SYMBOL_GPL(apic); |
1da177e4 | 157 | |
96d55358 | 158 | static struct genapic *apic_probe[] __initdata = { |
d49c4288 YL |
159 | #ifdef CONFIG_X86_NUMAQ |
160 | &apic_numaq, | |
161 | #endif | |
162 | #ifdef CONFIG_X86_SUMMIT | |
1da177e4 | 163 | &apic_summit, |
d49c4288 YL |
164 | #endif |
165 | #ifdef CONFIG_X86_BIGSMP | |
9b0c5028 | 166 | &apic_bigsmp, |
d49c4288 YL |
167 | #endif |
168 | #ifdef CONFIG_X86_ES7000 | |
1da177e4 | 169 | &apic_es7000, |
d49c4288 | 170 | #endif |
1da177e4 LT |
171 | &apic_default, /* must be last */ |
172 | NULL, | |
173 | }; | |
174 | ||
1a3f239d RR |
175 | static int cmdline_apic __initdata; |
176 | static int __init parse_apic(char *arg) | |
177 | { | |
178 | int i; | |
179 | ||
180 | if (!arg) | |
181 | return -EINVAL; | |
182 | ||
183 | for (i = 0; apic_probe[i]; i++) { | |
184 | if (!strcmp(apic_probe[i]->name, arg)) { | |
c8d46cf0 | 185 | apic = apic_probe[i]; |
1a3f239d RR |
186 | cmdline_apic = 1; |
187 | return 0; | |
188 | } | |
189 | } | |
9a8cb626 | 190 | |
54ac14a8 YL |
191 | if (x86_quirks->update_genapic) |
192 | x86_quirks->update_genapic(); | |
193 | ||
9a8cb626 AK |
194 | /* Parsed again by __setup for debug/verbose */ |
195 | return 0; | |
1a3f239d RR |
196 | } |
197 | early_param("apic", parse_apic); | |
911a62d4 VP |
198 | |
199 | void __init generic_bigsmp_probe(void) | |
200 | { | |
b20d70b7 | 201 | #ifdef CONFIG_X86_BIGSMP |
911a62d4 VP |
202 | /* |
203 | * This routine is used to switch to bigsmp mode when | |
204 | * - There is no apic= option specified by the user | |
27b46d76 | 205 | * - generic_apic_probe() has chosen apic_default as the sub_arch |
911a62d4 VP |
206 | * - we find more than 8 CPUs in acpi LAPIC listing with xAPIC support |
207 | */ | |
208 | ||
c8d46cf0 | 209 | if (!cmdline_apic && apic == &apic_default) { |
911a62d4 | 210 | if (apic_bigsmp.probe()) { |
c8d46cf0 | 211 | apic = &apic_bigsmp; |
87f76065 YL |
212 | if (x86_quirks->update_genapic) |
213 | x86_quirks->update_genapic(); | |
911a62d4 | 214 | printk(KERN_INFO "Overriding APIC driver with %s\n", |
c8d46cf0 | 215 | apic->name); |
911a62d4 | 216 | } |
87f76065 | 217 | } |
d49c4288 | 218 | #endif |
911a62d4 VP |
219 | } |
220 | ||
1a3f239d | 221 | void __init generic_apic_probe(void) |
9b0c5028 | 222 | { |
1a3f239d RR |
223 | if (!cmdline_apic) { |
224 | int i; | |
225 | for (i = 0; apic_probe[i]; i++) { | |
226 | if (apic_probe[i]->probe()) { | |
c8d46cf0 | 227 | apic = apic_probe[i]; |
1a3f239d | 228 | break; |
1da177e4 LT |
229 | } |
230 | } | |
1a3f239d RR |
231 | /* Not visible without early console */ |
232 | if (!apic_probe[i]) | |
233 | panic("Didn't find an APIC driver"); | |
87f76065 YL |
234 | |
235 | if (x86_quirks->update_genapic) | |
236 | x86_quirks->update_genapic(); | |
1da177e4 | 237 | } |
c8d46cf0 | 238 | printk(KERN_INFO "Using APIC driver %s\n", apic->name); |
9b0c5028 | 239 | } |
1da177e4 LT |
240 | |
241 | /* These functions can switch the APIC even after the initial ->probe() */ | |
242 | ||
9c764247 IM |
243 | int __init |
244 | generic_mps_oem_check(struct mpc_table *mpc, char *oem, char *productid) | |
9b0c5028 | 245 | { |
1da177e4 | 246 | int i; |
5f836405 | 247 | |
9b0c5028 | 248 | for (i = 0; apic_probe[i]; ++i) { |
5f836405 IM |
249 | if (!apic_probe[i]->mps_oem_check) |
250 | continue; | |
251 | if (!apic_probe[i]->mps_oem_check(mpc, oem, productid)) | |
252 | continue; | |
253 | ||
254 | if (!cmdline_apic) { | |
255 | apic = apic_probe[i]; | |
256 | if (x86_quirks->update_genapic) | |
257 | x86_quirks->update_genapic(); | |
258 | printk(KERN_INFO "Switched to APIC driver `%s'.\n", | |
259 | apic->name); | |
9b0c5028 | 260 | } |
5f836405 | 261 | return 1; |
9b0c5028 | 262 | } |
1da177e4 | 263 | return 0; |
9b0c5028 | 264 | } |
1da177e4 | 265 | |
306db03b | 266 | int __init default_acpi_madt_oem_check(char *oem_id, char *oem_table_id) |
1da177e4 LT |
267 | { |
268 | int i; | |
306db03b | 269 | |
9b0c5028 | 270 | for (i = 0; apic_probe[i]; ++i) { |
306db03b IM |
271 | if (!apic_probe[i]->acpi_madt_oem_check) |
272 | continue; | |
273 | if (!apic_probe[i]->acpi_madt_oem_check(oem_id, oem_table_id)) | |
274 | continue; | |
275 | ||
276 | if (!cmdline_apic) { | |
277 | apic = apic_probe[i]; | |
278 | if (x86_quirks->update_genapic) | |
279 | x86_quirks->update_genapic(); | |
280 | printk(KERN_INFO "Switched to APIC driver `%s'.\n", | |
281 | apic->name); | |
9b0c5028 | 282 | } |
306db03b | 283 | return 1; |
9b0c5028 PC |
284 | } |
285 | return 0; | |
1da177e4 | 286 | } |
6bda2c8b IM |
287 | |
288 | #endif /* CONFIG_X86_LOCAL_APIC */ | |
289 | ||
290 | /** | |
291 | * pre_intr_init_hook - initialisation prior to setting up interrupt vectors | |
292 | * | |
293 | * Description: | |
294 | * Perform any necessary interrupt initialisation prior to setting up | |
295 | * the "ordinary" interrupt call gates. For legacy reasons, the ISA | |
296 | * interrupts should be initialised here if the machine emulates a PC | |
297 | * in any way. | |
298 | **/ | |
299 | void __init pre_intr_init_hook(void) | |
300 | { | |
301 | if (x86_quirks->arch_pre_intr_init) { | |
302 | if (x86_quirks->arch_pre_intr_init()) | |
303 | return; | |
304 | } | |
305 | init_ISA_irqs(); | |
306 | } | |
307 | ||
308 | /** | |
309 | * intr_init_hook - post gate setup interrupt initialisation | |
310 | * | |
311 | * Description: | |
312 | * Fill in any interrupts that may have been left out by the general | |
313 | * init_IRQ() routine. interrupts having to do with the machine rather | |
314 | * than the devices on the I/O bus (like APIC interrupts in intel MP | |
315 | * systems) are started here. | |
316 | **/ | |
317 | void __init intr_init_hook(void) | |
318 | { | |
319 | if (x86_quirks->arch_intr_init) { | |
320 | if (x86_quirks->arch_intr_init()) | |
321 | return; | |
322 | } | |
323 | } | |
324 | ||
325 | /** | |
326 | * pre_setup_arch_hook - hook called prior to any setup_arch() execution | |
327 | * | |
328 | * Description: | |
329 | * generally used to activate any machine specific identification | |
330 | * routines that may be needed before setup_arch() runs. On Voyager | |
331 | * this is used to get the board revision and type. | |
332 | **/ | |
333 | void __init pre_setup_arch_hook(void) | |
334 | { | |
335 | } | |
336 | ||
337 | /** | |
338 | * trap_init_hook - initialise system specific traps | |
339 | * | |
340 | * Description: | |
341 | * Called as the final act of trap_init(). Used in VISWS to initialise | |
342 | * the various board specific APIC traps. | |
343 | **/ | |
344 | void __init trap_init_hook(void) | |
345 | { | |
346 | if (x86_quirks->arch_trap_init) { | |
347 | if (x86_quirks->arch_trap_init()) | |
348 | return; | |
349 | } | |
350 | } | |
351 | ||
352 | static struct irqaction irq0 = { | |
353 | .handler = timer_interrupt, | |
354 | .flags = IRQF_DISABLED | IRQF_NOBALANCING | IRQF_IRQPOLL, | |
355 | .mask = CPU_MASK_NONE, | |
356 | .name = "timer" | |
357 | }; | |
358 | ||
359 | /** | |
360 | * pre_time_init_hook - do any specific initialisations before. | |
361 | * | |
362 | **/ | |
363 | void __init pre_time_init_hook(void) | |
364 | { | |
365 | if (x86_quirks->arch_pre_time_init) | |
366 | x86_quirks->arch_pre_time_init(); | |
367 | } | |
368 | ||
369 | /** | |
370 | * time_init_hook - do any specific initialisations for the system timer. | |
371 | * | |
372 | * Description: | |
373 | * Must plug the system timer interrupt source at HZ into the IRQ listed | |
374 | * in irq_vectors.h:TIMER_IRQ | |
375 | **/ | |
376 | void __init time_init_hook(void) | |
377 | { | |
378 | if (x86_quirks->arch_time_init) { | |
379 | /* | |
380 | * A nonzero return code does not mean failure, it means | |
381 | * that the architecture quirk does not want any | |
382 | * generic (timer) setup to be performed after this: | |
383 | */ | |
384 | if (x86_quirks->arch_time_init()) | |
385 | return; | |
386 | } | |
387 | ||
388 | irq0.mask = cpumask_of_cpu(0); | |
389 | setup_irq(0, &irq0); | |
390 | } | |
391 | ||
392 | #ifdef CONFIG_MCA | |
393 | /** | |
394 | * mca_nmi_hook - hook into MCA specific NMI chain | |
395 | * | |
396 | * Description: | |
397 | * The MCA (Microchannel Architecture) has an NMI chain for NMI sources | |
398 | * along the MCA bus. Use this to hook into that chain if you will need | |
399 | * it. | |
400 | **/ | |
401 | void mca_nmi_hook(void) | |
402 | { | |
403 | /* | |
404 | * If I recall correctly, there's a whole bunch of other things that | |
405 | * we can do to check for NMI problems, but that's all I know about | |
406 | * at the moment. | |
407 | */ | |
408 | pr_warning("NMI generated from unknown source!\n"); | |
409 | } | |
410 | #endif | |
411 | ||
412 | static __init int no_ipi_broadcast(char *str) | |
413 | { | |
414 | get_option(&str, &no_broadcast); | |
415 | pr_info("Using %s mode\n", | |
416 | no_broadcast ? "No IPI Broadcast" : "IPI Broadcast"); | |
417 | return 1; | |
418 | } | |
419 | __setup("no_ipi_broadcast=", no_ipi_broadcast); | |
420 | ||
421 | static int __init print_ipi_mode(void) | |
422 | { | |
423 | pr_info("Using IPI %s mode\n", | |
424 | no_broadcast ? "No-Shortcut" : "Shortcut"); | |
425 | return 0; | |
426 | } | |
427 | ||
428 | late_initcall(print_ipi_mode); | |
429 |