x86: remove update_apic from x86_quirks
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / arch / x86 / kernel / apic / x2apic_uv_x.c
blob6d7b9d960ddcb2df147591f96b56fd0e9f01004b
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.
6 * SGI UV APIC functions (note: not an Intel compatible APIC)
8 * Copyright (C) 2007-2008 Silicon Graphics, Inc. All rights reserved.
9 */
11 #include <linux/kernel.h>
12 #include <linux/threads.h>
13 #include <linux/cpu.h>
14 #include <linux/cpumask.h>
15 #include <linux/string.h>
16 #include <linux/ctype.h>
17 #include <linux/init.h>
18 #include <linux/sched.h>
19 #include <linux/module.h>
20 #include <linux/hardirq.h>
21 #include <linux/timer.h>
22 #include <linux/proc_fs.h>
23 #include <asm/current.h>
24 #include <asm/smp.h>
25 #include <asm/apic.h>
26 #include <asm/ipi.h>
27 #include <asm/pgtable.h>
28 #include <asm/uv/uv.h>
29 #include <asm/uv/uv_mmrs.h>
30 #include <asm/uv/uv_hub.h>
31 #include <asm/uv/bios.h>
33 DEFINE_PER_CPU(int, x2apic_extra_bits);
35 static enum uv_system_type uv_system_type;
37 static int uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
39 if (!strcmp(oem_id, "SGI")) {
40 if (!strcmp(oem_table_id, "UVL"))
41 uv_system_type = UV_LEGACY_APIC;
42 else if (!strcmp(oem_table_id, "UVX"))
43 uv_system_type = UV_X2APIC;
44 else if (!strcmp(oem_table_id, "UVH")) {
45 uv_system_type = UV_NON_UNIQUE_APIC;
46 return 1;
49 return 0;
52 enum uv_system_type get_uv_system_type(void)
54 return uv_system_type;
57 int is_uv_system(void)
59 return uv_system_type != UV_NONE;
61 EXPORT_SYMBOL_GPL(is_uv_system);
63 DEFINE_PER_CPU(struct uv_hub_info_s, __uv_hub_info);
64 EXPORT_PER_CPU_SYMBOL_GPL(__uv_hub_info);
66 struct uv_blade_info *uv_blade_info;
67 EXPORT_SYMBOL_GPL(uv_blade_info);
69 short *uv_node_to_blade;
70 EXPORT_SYMBOL_GPL(uv_node_to_blade);
72 short *uv_cpu_to_blade;
73 EXPORT_SYMBOL_GPL(uv_cpu_to_blade);
75 short uv_possible_blades;
76 EXPORT_SYMBOL_GPL(uv_possible_blades);
78 unsigned long sn_rtc_cycles_per_second;
79 EXPORT_SYMBOL(sn_rtc_cycles_per_second);
81 /* Start with all IRQs pointing to boot CPU. IRQ balancing will shift them. */
83 static const struct cpumask *uv_target_cpus(void)
85 return cpumask_of(0);
88 static void uv_vector_allocation_domain(int cpu, struct cpumask *retmask)
90 cpumask_clear(retmask);
91 cpumask_set_cpu(cpu, retmask);
94 static int uv_wakeup_secondary(int phys_apicid, unsigned long start_rip)
96 unsigned long val;
97 int pnode;
99 pnode = uv_apicid_to_pnode(phys_apicid);
100 val = (1UL << UVH_IPI_INT_SEND_SHFT) |
101 (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
102 ((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
103 APIC_DM_INIT;
104 uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
105 mdelay(10);
107 val = (1UL << UVH_IPI_INT_SEND_SHFT) |
108 (phys_apicid << UVH_IPI_INT_APIC_ID_SHFT) |
109 ((start_rip << UVH_IPI_INT_VECTOR_SHFT) >> 12) |
110 APIC_DM_STARTUP;
111 uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
113 atomic_set(&init_deasserted, 1);
115 return 0;
118 static void uv_send_IPI_one(int cpu, int vector)
120 unsigned long val, apicid;
121 int pnode;
123 apicid = per_cpu(x86_cpu_to_apicid, cpu);
124 pnode = uv_apicid_to_pnode(apicid);
126 val = (1UL << UVH_IPI_INT_SEND_SHFT) |
127 (apicid << UVH_IPI_INT_APIC_ID_SHFT) |
128 (vector << UVH_IPI_INT_VECTOR_SHFT);
130 uv_write_global_mmr64(pnode, UVH_IPI_INT, val);
133 static void uv_send_IPI_mask(const struct cpumask *mask, int vector)
135 unsigned int cpu;
137 for_each_cpu(cpu, mask)
138 uv_send_IPI_one(cpu, vector);
141 static void uv_send_IPI_mask_allbutself(const struct cpumask *mask, int vector)
143 unsigned int this_cpu = smp_processor_id();
144 unsigned int cpu;
146 for_each_cpu(cpu, mask) {
147 if (cpu != this_cpu)
148 uv_send_IPI_one(cpu, vector);
152 static void uv_send_IPI_allbutself(int vector)
154 unsigned int this_cpu = smp_processor_id();
155 unsigned int cpu;
157 for_each_online_cpu(cpu) {
158 if (cpu != this_cpu)
159 uv_send_IPI_one(cpu, vector);
163 static void uv_send_IPI_all(int vector)
165 uv_send_IPI_mask(cpu_online_mask, vector);
168 static int uv_apic_id_registered(void)
170 return 1;
173 static void uv_init_apic_ldr(void)
177 static unsigned int uv_cpu_mask_to_apicid(const struct cpumask *cpumask)
180 * We're using fixed IRQ delivery, can only return one phys APIC ID.
181 * May as well be the first.
183 int cpu = cpumask_first(cpumask);
185 if ((unsigned)cpu < nr_cpu_ids)
186 return per_cpu(x86_cpu_to_apicid, cpu);
187 else
188 return BAD_APICID;
191 static unsigned int
192 uv_cpu_mask_to_apicid_and(const struct cpumask *cpumask,
193 const struct cpumask *andmask)
195 int cpu;
198 * We're using fixed IRQ delivery, can only return one phys APIC ID.
199 * May as well be the first.
201 for_each_cpu_and(cpu, cpumask, andmask) {
202 if (cpumask_test_cpu(cpu, cpu_online_mask))
203 break;
205 if (cpu < nr_cpu_ids)
206 return per_cpu(x86_cpu_to_apicid, cpu);
208 return BAD_APICID;
211 static unsigned int x2apic_get_apic_id(unsigned long x)
213 unsigned int id;
215 WARN_ON(preemptible() && num_online_cpus() > 1);
216 id = x | __get_cpu_var(x2apic_extra_bits);
218 return id;
221 static unsigned long set_apic_id(unsigned int id)
223 unsigned long x;
225 /* maskout x2apic_extra_bits ? */
226 x = id;
227 return x;
230 static unsigned int uv_read_apic_id(void)
233 return x2apic_get_apic_id(apic_read(APIC_ID));
236 static int uv_phys_pkg_id(int initial_apicid, int index_msb)
238 return uv_read_apic_id() >> index_msb;
241 static void uv_send_IPI_self(int vector)
243 apic_write(APIC_SELF_IPI, vector);
246 struct apic apic_x2apic_uv_x = {
248 .name = "UV large system",
249 .probe = NULL,
250 .acpi_madt_oem_check = uv_acpi_madt_oem_check,
251 .apic_id_registered = uv_apic_id_registered,
253 .irq_delivery_mode = dest_Fixed,
254 .irq_dest_mode = 1, /* logical */
256 .target_cpus = uv_target_cpus,
257 .disable_esr = 0,
258 .dest_logical = APIC_DEST_LOGICAL,
259 .check_apicid_used = NULL,
260 .check_apicid_present = NULL,
262 .vector_allocation_domain = uv_vector_allocation_domain,
263 .init_apic_ldr = uv_init_apic_ldr,
265 .ioapic_phys_id_map = NULL,
266 .setup_apic_routing = NULL,
267 .multi_timer_check = NULL,
268 .apicid_to_node = NULL,
269 .cpu_to_logical_apicid = NULL,
270 .cpu_present_to_apicid = default_cpu_present_to_apicid,
271 .apicid_to_cpu_present = NULL,
272 .setup_portio_remap = NULL,
273 .check_phys_apicid_present = default_check_phys_apicid_present,
274 .enable_apic_mode = NULL,
275 .phys_pkg_id = uv_phys_pkg_id,
276 .mps_oem_check = NULL,
278 .get_apic_id = x2apic_get_apic_id,
279 .set_apic_id = set_apic_id,
280 .apic_id_mask = 0xFFFFFFFFu,
282 .cpu_mask_to_apicid = uv_cpu_mask_to_apicid,
283 .cpu_mask_to_apicid_and = uv_cpu_mask_to_apicid_and,
285 .send_IPI_mask = uv_send_IPI_mask,
286 .send_IPI_mask_allbutself = uv_send_IPI_mask_allbutself,
287 .send_IPI_allbutself = uv_send_IPI_allbutself,
288 .send_IPI_all = uv_send_IPI_all,
289 .send_IPI_self = uv_send_IPI_self,
291 .wakeup_cpu = uv_wakeup_secondary,
292 .trampoline_phys_low = DEFAULT_TRAMPOLINE_PHYS_LOW,
293 .trampoline_phys_high = DEFAULT_TRAMPOLINE_PHYS_HIGH,
294 .wait_for_init_deassert = NULL,
295 .smp_callin_clear_local_apic = NULL,
296 .inquire_remote_apic = NULL,
298 .read = native_apic_msr_read,
299 .write = native_apic_msr_write,
300 .icr_read = native_x2apic_icr_read,
301 .icr_write = native_x2apic_icr_write,
302 .wait_icr_idle = native_x2apic_wait_icr_idle,
303 .safe_wait_icr_idle = native_safe_x2apic_wait_icr_idle,
306 static __cpuinit void set_x2apic_extra_bits(int pnode)
308 __get_cpu_var(x2apic_extra_bits) = (pnode << 6);
312 * Called on boot cpu.
314 static __init int boot_pnode_to_blade(int pnode)
316 int blade;
318 for (blade = 0; blade < uv_num_possible_blades(); blade++)
319 if (pnode == uv_blade_info[blade].pnode)
320 return blade;
321 BUG();
324 struct redir_addr {
325 unsigned long redirect;
326 unsigned long alias;
329 #define DEST_SHIFT UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR_DEST_BASE_SHFT
331 static __initdata struct redir_addr redir_addrs[] = {
332 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_0_MMR, UVH_SI_ALIAS0_OVERLAY_CONFIG},
333 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_1_MMR, UVH_SI_ALIAS1_OVERLAY_CONFIG},
334 {UVH_RH_GAM_ALIAS210_REDIRECT_CONFIG_2_MMR, UVH_SI_ALIAS2_OVERLAY_CONFIG},
337 static __init void get_lowmem_redirect(unsigned long *base, unsigned long *size)
339 union uvh_si_alias0_overlay_config_u alias;
340 union uvh_rh_gam_alias210_redirect_config_2_mmr_u redirect;
341 int i;
343 for (i = 0; i < ARRAY_SIZE(redir_addrs); i++) {
344 alias.v = uv_read_local_mmr(redir_addrs[i].alias);
345 if (alias.s.base == 0) {
346 *size = (1UL << alias.s.m_alias);
347 redirect.v = uv_read_local_mmr(redir_addrs[i].redirect);
348 *base = (unsigned long)redirect.s.dest_base << DEST_SHIFT;
349 return;
352 BUG();
355 static __init void map_low_mmrs(void)
357 init_extra_mapping_uc(UV_GLOBAL_MMR32_BASE, UV_GLOBAL_MMR32_SIZE);
358 init_extra_mapping_uc(UV_LOCAL_MMR_BASE, UV_LOCAL_MMR_SIZE);
361 enum map_type {map_wb, map_uc};
363 static __init void map_high(char *id, unsigned long base, int shift,
364 int max_pnode, enum map_type map_type)
366 unsigned long bytes, paddr;
368 paddr = base << shift;
369 bytes = (1UL << shift) * (max_pnode + 1);
370 printk(KERN_INFO "UV: Map %s_HI 0x%lx - 0x%lx\n", id, paddr,
371 paddr + bytes);
372 if (map_type == map_uc)
373 init_extra_mapping_uc(paddr, bytes);
374 else
375 init_extra_mapping_wb(paddr, bytes);
378 static __init void map_gru_high(int max_pnode)
380 union uvh_rh_gam_gru_overlay_config_mmr_u gru;
381 int shift = UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR_BASE_SHFT;
383 gru.v = uv_read_local_mmr(UVH_RH_GAM_GRU_OVERLAY_CONFIG_MMR);
384 if (gru.s.enable)
385 map_high("GRU", gru.s.base, shift, max_pnode, map_wb);
388 static __init void map_config_high(int max_pnode)
390 union uvh_rh_gam_cfg_overlay_config_mmr_u cfg;
391 int shift = UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR_BASE_SHFT;
393 cfg.v = uv_read_local_mmr(UVH_RH_GAM_CFG_OVERLAY_CONFIG_MMR);
394 if (cfg.s.enable)
395 map_high("CONFIG", cfg.s.base, shift, max_pnode, map_uc);
398 static __init void map_mmr_high(int max_pnode)
400 union uvh_rh_gam_mmr_overlay_config_mmr_u mmr;
401 int shift = UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR_BASE_SHFT;
403 mmr.v = uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR);
404 if (mmr.s.enable)
405 map_high("MMR", mmr.s.base, shift, max_pnode, map_uc);
408 static __init void map_mmioh_high(int max_pnode)
410 union uvh_rh_gam_mmioh_overlay_config_mmr_u mmioh;
411 int shift = UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR_BASE_SHFT;
413 mmioh.v = uv_read_local_mmr(UVH_RH_GAM_MMIOH_OVERLAY_CONFIG_MMR);
414 if (mmioh.s.enable)
415 map_high("MMIOH", mmioh.s.base, shift, max_pnode, map_uc);
418 static __init void uv_rtc_init(void)
420 long status;
421 u64 ticks_per_sec;
423 status = uv_bios_freq_base(BIOS_FREQ_BASE_REALTIME_CLOCK,
424 &ticks_per_sec);
425 if (status != BIOS_STATUS_SUCCESS || ticks_per_sec < 100000) {
426 printk(KERN_WARNING
427 "unable to determine platform RTC clock frequency, "
428 "guessing.\n");
429 /* BIOS gives wrong value for clock freq. so guess */
430 sn_rtc_cycles_per_second = 1000000000000UL / 30000UL;
431 } else
432 sn_rtc_cycles_per_second = ticks_per_sec;
436 * percpu heartbeat timer
438 static void uv_heartbeat(unsigned long ignored)
440 struct timer_list *timer = &uv_hub_info->scir.timer;
441 unsigned char bits = uv_hub_info->scir.state;
443 /* flip heartbeat bit */
444 bits ^= SCIR_CPU_HEARTBEAT;
446 /* is this cpu idle? */
447 if (idle_cpu(raw_smp_processor_id()))
448 bits &= ~SCIR_CPU_ACTIVITY;
449 else
450 bits |= SCIR_CPU_ACTIVITY;
452 /* update system controller interface reg */
453 uv_set_scir_bits(bits);
455 /* enable next timer period */
456 mod_timer(timer, jiffies + SCIR_CPU_HB_INTERVAL);
459 static void __cpuinit uv_heartbeat_enable(int cpu)
461 if (!uv_cpu_hub_info(cpu)->scir.enabled) {
462 struct timer_list *timer = &uv_cpu_hub_info(cpu)->scir.timer;
464 uv_set_cpu_scir_bits(cpu, SCIR_CPU_HEARTBEAT|SCIR_CPU_ACTIVITY);
465 setup_timer(timer, uv_heartbeat, cpu);
466 timer->expires = jiffies + SCIR_CPU_HB_INTERVAL;
467 add_timer_on(timer, cpu);
468 uv_cpu_hub_info(cpu)->scir.enabled = 1;
471 /* check boot cpu */
472 if (!uv_cpu_hub_info(0)->scir.enabled)
473 uv_heartbeat_enable(0);
476 #ifdef CONFIG_HOTPLUG_CPU
477 static void __cpuinit uv_heartbeat_disable(int cpu)
479 if (uv_cpu_hub_info(cpu)->scir.enabled) {
480 uv_cpu_hub_info(cpu)->scir.enabled = 0;
481 del_timer(&uv_cpu_hub_info(cpu)->scir.timer);
483 uv_set_cpu_scir_bits(cpu, 0xff);
487 * cpu hotplug notifier
489 static __cpuinit int uv_scir_cpu_notify(struct notifier_block *self,
490 unsigned long action, void *hcpu)
492 long cpu = (long)hcpu;
494 switch (action) {
495 case CPU_ONLINE:
496 uv_heartbeat_enable(cpu);
497 break;
498 case CPU_DOWN_PREPARE:
499 uv_heartbeat_disable(cpu);
500 break;
501 default:
502 break;
504 return NOTIFY_OK;
507 static __init void uv_scir_register_cpu_notifier(void)
509 hotcpu_notifier(uv_scir_cpu_notify, 0);
512 #else /* !CONFIG_HOTPLUG_CPU */
514 static __init void uv_scir_register_cpu_notifier(void)
518 static __init int uv_init_heartbeat(void)
520 int cpu;
522 if (is_uv_system())
523 for_each_online_cpu(cpu)
524 uv_heartbeat_enable(cpu);
525 return 0;
528 late_initcall(uv_init_heartbeat);
530 #endif /* !CONFIG_HOTPLUG_CPU */
533 * Called on each cpu to initialize the per_cpu UV data area.
534 * ZZZ hotplug not supported yet
536 void __cpuinit uv_cpu_init(void)
538 /* CPU 0 initilization will be done via uv_system_init. */
539 if (!uv_blade_info)
540 return;
542 uv_blade_info[uv_numa_blade_id()].nr_online_cpus++;
544 if (get_uv_system_type() == UV_NON_UNIQUE_APIC)
545 set_x2apic_extra_bits(uv_hub_info->pnode);
549 void __init uv_system_init(void)
551 union uvh_si_addr_map_config_u m_n_config;
552 union uvh_node_id_u node_id;
553 unsigned long gnode_upper, lowmem_redir_base, lowmem_redir_size;
554 int bytes, nid, cpu, lcpu, pnode, blade, i, j, m_val, n_val;
555 int max_pnode = 0;
556 unsigned long mmr_base, present;
558 map_low_mmrs();
560 m_n_config.v = uv_read_local_mmr(UVH_SI_ADDR_MAP_CONFIG);
561 m_val = m_n_config.s.m_skt;
562 n_val = m_n_config.s.n_skt;
563 mmr_base =
564 uv_read_local_mmr(UVH_RH_GAM_MMR_OVERLAY_CONFIG_MMR) &
565 ~UV_MMR_ENABLE;
566 printk(KERN_DEBUG "UV: global MMR base 0x%lx\n", mmr_base);
568 for(i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++)
569 uv_possible_blades +=
570 hweight64(uv_read_local_mmr( UVH_NODE_PRESENT_TABLE + i * 8));
571 printk(KERN_DEBUG "UV: Found %d blades\n", uv_num_possible_blades());
573 bytes = sizeof(struct uv_blade_info) * uv_num_possible_blades();
574 uv_blade_info = kmalloc(bytes, GFP_KERNEL);
576 get_lowmem_redirect(&lowmem_redir_base, &lowmem_redir_size);
578 bytes = sizeof(uv_node_to_blade[0]) * num_possible_nodes();
579 uv_node_to_blade = kmalloc(bytes, GFP_KERNEL);
580 memset(uv_node_to_blade, 255, bytes);
582 bytes = sizeof(uv_cpu_to_blade[0]) * num_possible_cpus();
583 uv_cpu_to_blade = kmalloc(bytes, GFP_KERNEL);
584 memset(uv_cpu_to_blade, 255, bytes);
586 blade = 0;
587 for (i = 0; i < UVH_NODE_PRESENT_TABLE_DEPTH; i++) {
588 present = uv_read_local_mmr(UVH_NODE_PRESENT_TABLE + i * 8);
589 for (j = 0; j < 64; j++) {
590 if (!test_bit(j, &present))
591 continue;
592 uv_blade_info[blade].pnode = (i * 64 + j);
593 uv_blade_info[blade].nr_possible_cpus = 0;
594 uv_blade_info[blade].nr_online_cpus = 0;
595 blade++;
599 node_id.v = uv_read_local_mmr(UVH_NODE_ID);
600 gnode_upper = (((unsigned long)node_id.s.node_id) &
601 ~((1 << n_val) - 1)) << m_val;
603 uv_bios_init();
604 uv_bios_get_sn_info(0, &uv_type, &sn_partition_id,
605 &sn_coherency_id, &sn_region_size);
606 uv_rtc_init();
608 for_each_present_cpu(cpu) {
609 nid = cpu_to_node(cpu);
610 pnode = uv_apicid_to_pnode(per_cpu(x86_cpu_to_apicid, cpu));
611 blade = boot_pnode_to_blade(pnode);
612 lcpu = uv_blade_info[blade].nr_possible_cpus;
613 uv_blade_info[blade].nr_possible_cpus++;
615 uv_cpu_hub_info(cpu)->lowmem_remap_base = lowmem_redir_base;
616 uv_cpu_hub_info(cpu)->lowmem_remap_top = lowmem_redir_size;
617 uv_cpu_hub_info(cpu)->m_val = m_val;
618 uv_cpu_hub_info(cpu)->n_val = m_val;
619 uv_cpu_hub_info(cpu)->numa_blade_id = blade;
620 uv_cpu_hub_info(cpu)->blade_processor_id = lcpu;
621 uv_cpu_hub_info(cpu)->pnode = pnode;
622 uv_cpu_hub_info(cpu)->pnode_mask = (1 << n_val) - 1;
623 uv_cpu_hub_info(cpu)->gpa_mask = (1 << (m_val + n_val)) - 1;
624 uv_cpu_hub_info(cpu)->gnode_upper = gnode_upper;
625 uv_cpu_hub_info(cpu)->global_mmr_base = mmr_base;
626 uv_cpu_hub_info(cpu)->coherency_domain_number = sn_coherency_id;
627 uv_cpu_hub_info(cpu)->scir.offset = SCIR_LOCAL_MMR_BASE + lcpu;
628 uv_node_to_blade[nid] = blade;
629 uv_cpu_to_blade[cpu] = blade;
630 max_pnode = max(pnode, max_pnode);
632 printk(KERN_DEBUG "UV: cpu %d, apicid 0x%x, pnode %d, nid %d, "
633 "lcpu %d, blade %d\n",
634 cpu, per_cpu(x86_cpu_to_apicid, cpu), pnode, nid,
635 lcpu, blade);
638 map_gru_high(max_pnode);
639 map_mmr_high(max_pnode);
640 map_config_high(max_pnode);
641 map_mmioh_high(max_pnode);
643 uv_cpu_init();
644 uv_scir_register_cpu_notifier();
645 proc_mkdir("sgi_uv", NULL);