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-rw-r--r--arch/i386/kernel/acpi/Makefile4
-rw-r--r--arch/i386/kernel/acpi/cstate.c103
-rw-r--r--arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c2
-rw-r--r--drivers/acpi/processor_core.c37
-rw-r--r--drivers/acpi/processor_idle.c105
-rw-r--r--drivers/acpi/processor_perflib.c33
-rw-r--r--include/acpi/pdc_intel.h29
-rw-r--r--include/acpi/processor.h34
-rw-r--r--include/asm-i386/acpi.h10
-rw-r--r--include/asm-x86_64/acpi.h8
10 files changed, 284 insertions, 81 deletions
diff --git a/arch/i386/kernel/acpi/Makefile b/arch/i386/kernel/acpi/Makefile
index ee75cb286cfe..5e291a20c03d 100644
--- a/arch/i386/kernel/acpi/Makefile
+++ b/arch/i386/kernel/acpi/Makefile
@@ -2,3 +2,7 @@ obj-$(CONFIG_ACPI_BOOT) := boot.o
2obj-$(CONFIG_X86_IO_APIC) += earlyquirk.o 2obj-$(CONFIG_X86_IO_APIC) += earlyquirk.o
3obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup.o 3obj-$(CONFIG_ACPI_SLEEP) += sleep.o wakeup.o
4 4
5ifneq ($(CONFIG_ACPI_PROCESSOR),)
6obj-y += cstate.o
7endif
8
diff --git a/arch/i386/kernel/acpi/cstate.c b/arch/i386/kernel/acpi/cstate.c
new file mode 100644
index 000000000000..4c3036ba65df
--- /dev/null
+++ b/arch/i386/kernel/acpi/cstate.c
@@ -0,0 +1,103 @@
1/*
2 * arch/i386/kernel/acpi/cstate.c
3 *
4 * Copyright (C) 2005 Intel Corporation
5 * Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
6 * - Added _PDC for SMP C-states on Intel CPUs
7 */
8
9#include <linux/kernel.h>
10#include <linux/module.h>
11#include <linux/init.h>
12#include <linux/acpi.h>
13
14#include <acpi/processor.h>
15#include <asm/acpi.h>
16
17static void acpi_processor_power_init_intel_pdc(struct acpi_processor_power
18 *pow)
19{
20 struct acpi_object_list *obj_list;
21 union acpi_object *obj;
22 u32 *buf;
23
24 /* allocate and initialize pdc. It will be used later. */
25 obj_list = kmalloc(sizeof(struct acpi_object_list), GFP_KERNEL);
26 if (!obj_list) {
27 printk(KERN_ERR "Memory allocation error\n");
28 return;
29 }
30
31 obj = kmalloc(sizeof(union acpi_object), GFP_KERNEL);
32 if (!obj) {
33 printk(KERN_ERR "Memory allocation error\n");
34 kfree(obj_list);
35 return;
36 }
37
38 buf = kmalloc(12, GFP_KERNEL);
39 if (!buf) {
40 printk(KERN_ERR "Memory allocation error\n");
41 kfree(obj);
42 kfree(obj_list);
43 return;
44 }
45
46 buf[0] = ACPI_PDC_REVISION_ID;
47 buf[1] = 1;
48 buf[2] = ACPI_PDC_C_CAPABILITY_SMP;
49
50 obj->type = ACPI_TYPE_BUFFER;
51 obj->buffer.length = 12;
52 obj->buffer.pointer = (u8 *) buf;
53 obj_list->count = 1;
54 obj_list->pointer = obj;
55 pow->pdc = obj_list;
56
57 return;
58}
59
60/* Initialize _PDC data based on the CPU vendor */
61void acpi_processor_power_init_pdc(struct acpi_processor_power *pow,
62 unsigned int cpu)
63{
64 struct cpuinfo_x86 *c = cpu_data + cpu;
65
66 pow->pdc = NULL;
67 if (c->x86_vendor == X86_VENDOR_INTEL)
68 acpi_processor_power_init_intel_pdc(pow);
69
70 return;
71}
72
73EXPORT_SYMBOL(acpi_processor_power_init_pdc);
74
75/*
76 * Initialize bm_flags based on the CPU cache properties
77 * On SMP it depends on cache configuration
78 * - When cache is not shared among all CPUs, we flush cache
79 * before entering C3.
80 * - When cache is shared among all CPUs, we use bm_check
81 * mechanism as in UP case
82 *
83 * This routine is called only after all the CPUs are online
84 */
85void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
86 unsigned int cpu)
87{
88 struct cpuinfo_x86 *c = cpu_data + cpu;
89
90 flags->bm_check = 0;
91 if (num_online_cpus() == 1)
92 flags->bm_check = 1;
93 else if (c->x86_vendor == X86_VENDOR_INTEL) {
94 /*
95 * Today all CPUs that support C3 share cache.
96 * TBD: This needs to look at cache shared map, once
97 * multi-core detection patch makes to the base.
98 */
99 flags->bm_check = 1;
100 }
101}
102
103EXPORT_SYMBOL(acpi_processor_power_init_bm_check);
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
index 7dcbf70fc16f..327a55d4d1c6 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -375,7 +375,7 @@ static int centrino_cpu_init_acpi(struct cpufreq_policy *policy)
375 arg0.buffer.pointer = (u8 *) arg0_buf; 375 arg0.buffer.pointer = (u8 *) arg0_buf;
376 arg0_buf[0] = ACPI_PDC_REVISION_ID; 376 arg0_buf[0] = ACPI_PDC_REVISION_ID;
377 arg0_buf[1] = 1; 377 arg0_buf[1] = 1;
378 arg0_buf[2] = ACPI_PDC_EST_CAPABILITY_SMP | ACPI_PDC_EST_CAPABILITY_MSR; 378 arg0_buf[2] = ACPI_PDC_EST_CAPABILITY_SMP_MSR;
379 379
380 p.pdc = &arg_list; 380 p.pdc = &arg_list;
381 381
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index f4778747e889..e421842888b9 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -256,6 +256,43 @@ acpi_processor_errata (
256 256
257 257
258/* -------------------------------------------------------------------------- 258/* --------------------------------------------------------------------------
259 Common ACPI processor fucntions
260 -------------------------------------------------------------------------- */
261
262/*
263 * _PDC is required for a BIOS-OS handshake for most of the newer
264 * ACPI processor features.
265 */
266
267int acpi_processor_set_pdc(struct acpi_processor *pr,
268 struct acpi_object_list *pdc_in)
269{
270 acpi_status status = AE_OK;
271 u32 arg0_buf[3];
272 union acpi_object arg0 = {ACPI_TYPE_BUFFER};
273 struct acpi_object_list no_object = {1, &arg0};
274 struct acpi_object_list *pdc;
275
276 ACPI_FUNCTION_TRACE("acpi_processor_set_pdc");
277
278 arg0.buffer.length = 12;
279 arg0.buffer.pointer = (u8 *) arg0_buf;
280 arg0_buf[0] = ACPI_PDC_REVISION_ID;
281 arg0_buf[1] = 0;
282 arg0_buf[2] = 0;
283
284 pdc = (pdc_in) ? pdc_in : &no_object;
285
286 status = acpi_evaluate_object(pr->handle, "_PDC", pdc, NULL);
287
288 if ((ACPI_FAILURE(status)) && (pdc_in))
289 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Error evaluating _PDC, using legacy perf. control...\n"));
290
291 return_VALUE(status);
292}
293
294
295/* --------------------------------------------------------------------------
259 FS Interface (/proc) 296 FS Interface (/proc)
260 -------------------------------------------------------------------------- */ 297 -------------------------------------------------------------------------- */
261 298
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c
index 79d5ca3066c6..8f038cd29477 100644
--- a/drivers/acpi/processor_idle.c
+++ b/drivers/acpi/processor_idle.c
@@ -6,6 +6,8 @@
6 * Copyright (C) 2004 Dominik Brodowski <linux@brodo.de> 6 * Copyright (C) 2004 Dominik Brodowski <linux@brodo.de>
7 * Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> 7 * Copyright (C) 2004 Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
8 * - Added processor hotplug support 8 * - Added processor hotplug support
9 * Copyright (C) 2005 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
10 * - Added support for C3 on SMP
9 * 11 *
10 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 12 * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
11 * 13 *
@@ -142,7 +144,7 @@ acpi_processor_power_activate (
142 switch (old->type) { 144 switch (old->type) {
143 case ACPI_STATE_C3: 145 case ACPI_STATE_C3:
144 /* Disable bus master reload */ 146 /* Disable bus master reload */
145 if (new->type != ACPI_STATE_C3) 147 if (new->type != ACPI_STATE_C3 && pr->flags.bm_check)
146 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0, ACPI_MTX_DO_NOT_LOCK); 148 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 0, ACPI_MTX_DO_NOT_LOCK);
147 break; 149 break;
148 } 150 }
@@ -152,7 +154,7 @@ acpi_processor_power_activate (
152 switch (new->type) { 154 switch (new->type) {
153 case ACPI_STATE_C3: 155 case ACPI_STATE_C3:
154 /* Enable bus master reload */ 156 /* Enable bus master reload */
155 if (old->type != ACPI_STATE_C3) 157 if (old->type != ACPI_STATE_C3 && pr->flags.bm_check)
156 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1, ACPI_MTX_DO_NOT_LOCK); 158 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD, 1, ACPI_MTX_DO_NOT_LOCK);
157 break; 159 break;
158 } 160 }
@@ -163,6 +165,9 @@ acpi_processor_power_activate (
163} 165}
164 166
165 167
168static atomic_t c3_cpu_count;
169
170
166static void acpi_processor_idle (void) 171static void acpi_processor_idle (void)
167{ 172{
168 struct acpi_processor *pr = NULL; 173 struct acpi_processor *pr = NULL;
@@ -297,8 +302,22 @@ static void acpi_processor_idle (void)
297 break; 302 break;
298 303
299 case ACPI_STATE_C3: 304 case ACPI_STATE_C3:
300 /* Disable bus master arbitration */ 305
301 acpi_set_register(ACPI_BITREG_ARB_DISABLE, 1, ACPI_MTX_DO_NOT_LOCK); 306 if (pr->flags.bm_check) {
307 if (atomic_inc_return(&c3_cpu_count) ==
308 num_online_cpus()) {
309 /*
310 * All CPUs are trying to go to C3
311 * Disable bus master arbitration
312 */
313 acpi_set_register(ACPI_BITREG_ARB_DISABLE, 1,
314 ACPI_MTX_DO_NOT_LOCK);
315 }
316 } else {
317 /* SMP with no shared cache... Invalidate cache */
318 ACPI_FLUSH_CPU_CACHE();
319 }
320
302 /* Get start time (ticks) */ 321 /* Get start time (ticks) */
303 t1 = inl(acpi_fadt.xpm_tmr_blk.address); 322 t1 = inl(acpi_fadt.xpm_tmr_blk.address);
304 /* Invoke C3 */ 323 /* Invoke C3 */
@@ -307,8 +326,12 @@ static void acpi_processor_idle (void)
307 t2 = inl(acpi_fadt.xpm_tmr_blk.address); 326 t2 = inl(acpi_fadt.xpm_tmr_blk.address);
308 /* Get end time (ticks) */ 327 /* Get end time (ticks) */
309 t2 = inl(acpi_fadt.xpm_tmr_blk.address); 328 t2 = inl(acpi_fadt.xpm_tmr_blk.address);
310 /* Enable bus master arbitration */ 329 if (pr->flags.bm_check) {
311 acpi_set_register(ACPI_BITREG_ARB_DISABLE, 0, ACPI_MTX_DO_NOT_LOCK); 330 /* Enable bus master arbitration */
331 atomic_dec(&c3_cpu_count);
332 acpi_set_register(ACPI_BITREG_ARB_DISABLE, 0, ACPI_MTX_DO_NOT_LOCK);
333 }
334
312 /* Re-enable interrupts */ 335 /* Re-enable interrupts */
313 local_irq_enable(); 336 local_irq_enable();
314 /* Compute time (ticks) that we were actually asleep */ 337 /* Compute time (ticks) that we were actually asleep */
@@ -552,9 +575,6 @@ static int acpi_processor_get_power_info_cst (struct acpi_processor *pr)
552 575
553 ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_cst"); 576 ACPI_FUNCTION_TRACE("acpi_processor_get_power_info_cst");
554 577
555 if (errata.smp)
556 return_VALUE(-ENODEV);
557
558 if (nocst) 578 if (nocst)
559 return_VALUE(-ENODEV); 579 return_VALUE(-ENODEV);
560 580
@@ -687,13 +707,6 @@ static void acpi_processor_power_verify_c2(struct acpi_processor_cx *cx)
687 return_VOID; 707 return_VOID;
688 } 708 }
689 709
690 /* We're (currently) only supporting C2 on UP */
691 else if (errata.smp) {
692 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
693 "C2 not supported in SMP mode\n"));
694 return_VOID;
695 }
696
697 /* 710 /*
698 * Otherwise we've met all of our C2 requirements. 711 * Otherwise we've met all of our C2 requirements.
699 * Normalize the C2 latency to expidite policy 712 * Normalize the C2 latency to expidite policy
@@ -709,6 +722,8 @@ static void acpi_processor_power_verify_c3(
709 struct acpi_processor *pr, 722 struct acpi_processor *pr,
710 struct acpi_processor_cx *cx) 723 struct acpi_processor_cx *cx)
711{ 724{
725 static int bm_check_flag;
726
712 ACPI_FUNCTION_TRACE("acpi_processor_get_power_verify_c3"); 727 ACPI_FUNCTION_TRACE("acpi_processor_get_power_verify_c3");
713 728
714 if (!cx->address) 729 if (!cx->address)
@@ -725,20 +740,6 @@ static void acpi_processor_power_verify_c3(
725 return_VOID; 740 return_VOID;
726 } 741 }
727 742
728 /* bus mastering control is necessary */
729 else if (!pr->flags.bm_control) {
730 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
731 "C3 support requires bus mastering control\n"));
732 return_VOID;
733 }
734
735 /* We're (currently) only supporting C2 on UP */
736 else if (errata.smp) {
737 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
738 "C3 not supported in SMP mode\n"));
739 return_VOID;
740 }
741
742 /* 743 /*
743 * PIIX4 Erratum #18: We don't support C3 when Type-F (fast) 744 * PIIX4 Erratum #18: We don't support C3 when Type-F (fast)
744 * DMA transfers are used by any ISA device to avoid livelock. 745 * DMA transfers are used by any ISA device to avoid livelock.
@@ -752,6 +753,39 @@ static void acpi_processor_power_verify_c3(
752 return_VOID; 753 return_VOID;
753 } 754 }
754 755
756 /* All the logic here assumes flags.bm_check is same across all CPUs */
757 if (!bm_check_flag) {
758 /* Determine whether bm_check is needed based on CPU */
759 acpi_processor_power_init_bm_check(&(pr->flags), pr->id);
760 bm_check_flag = pr->flags.bm_check;
761 } else {
762 pr->flags.bm_check = bm_check_flag;
763 }
764
765 if (pr->flags.bm_check) {
766 printk("Disabling BM access before entering C3\n");
767 /* bus mastering control is necessary */
768 if (!pr->flags.bm_control) {
769 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
770 "C3 support requires bus mastering control\n"));
771 return_VOID;
772 }
773 } else {
774 printk("Invalidating cache before entering C3\n");
775 /*
776 * WBINVD should be set in fadt, for C3 state to be
777 * supported on when bm_check is not required.
778 */
779 if (acpi_fadt.wb_invd != 1) {
780 ACPI_DEBUG_PRINT((ACPI_DB_INFO,
781 "Cache invalidation should work properly"
782 " for C3 to be enabled on SMP systems\n"));
783 return_VOID;
784 }
785 acpi_set_register(ACPI_BITREG_BUS_MASTER_RLD,
786 0, ACPI_MTX_DO_NOT_LOCK);
787 }
788
755 /* 789 /*
756 * Otherwise we've met all of our C3 requirements. 790 * Otherwise we've met all of our C3 requirements.
757 * Normalize the C3 latency to expidite policy. Enable 791 * Normalize the C3 latency to expidite policy. Enable
@@ -760,7 +794,6 @@ static void acpi_processor_power_verify_c3(
760 */ 794 */
761 cx->valid = 1; 795 cx->valid = 1;
762 cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency); 796 cx->latency_ticks = US_TO_PM_TIMER_TICKS(cx->latency);
763 pr->flags.bm_check = 1;
764 797
765 return_VOID; 798 return_VOID;
766} 799}
@@ -848,7 +881,7 @@ int acpi_processor_cst_has_changed (struct acpi_processor *pr)
848 if (!pr) 881 if (!pr)
849 return_VALUE(-EINVAL); 882 return_VALUE(-EINVAL);
850 883
851 if (errata.smp || nocst) { 884 if ( nocst) {
852 return_VALUE(-ENODEV); 885 return_VALUE(-ENODEV);
853 } 886 }
854 887
@@ -948,7 +981,6 @@ static struct file_operations acpi_processor_power_fops = {
948 .release = single_release, 981 .release = single_release,
949}; 982};
950 983
951
952int acpi_processor_power_init(struct acpi_processor *pr, struct acpi_device *device) 984int acpi_processor_power_init(struct acpi_processor *pr, struct acpi_device *device)
953{ 985{
954 acpi_status status = 0; 986 acpi_status status = 0;
@@ -965,7 +997,10 @@ int acpi_processor_power_init(struct acpi_processor *pr, struct acpi_device *dev
965 first_run++; 997 first_run++;
966 } 998 }
967 999
968 if (!errata.smp && (pr->id == 0) && acpi_fadt.cst_cnt && !nocst) { 1000 if (!pr)
1001 return_VALUE(-EINVAL);
1002
1003 if (acpi_fadt.cst_cnt && !nocst) {
969 status = acpi_os_write_port(acpi_fadt.smi_cmd, acpi_fadt.cst_cnt, 8); 1004 status = acpi_os_write_port(acpi_fadt.smi_cmd, acpi_fadt.cst_cnt, 8);
970 if (ACPI_FAILURE(status)) { 1005 if (ACPI_FAILURE(status)) {
971 ACPI_DEBUG_PRINT((ACPI_DB_ERROR, 1006 ACPI_DEBUG_PRINT((ACPI_DB_ERROR,
@@ -973,6 +1008,8 @@ int acpi_processor_power_init(struct acpi_processor *pr, struct acpi_device *dev
973 } 1008 }
974 } 1009 }
975 1010
1011 acpi_processor_power_init_pdc(&(pr->power), pr->id);
1012 acpi_processor_set_pdc(pr, pr->power.pdc);
976 acpi_processor_get_power_info(pr); 1013 acpi_processor_get_power_info(pr);
977 1014
978 /* 1015 /*
diff --git a/drivers/acpi/processor_perflib.c b/drivers/acpi/processor_perflib.c
index a9a1a8fe3199..1f0d6256302f 100644
--- a/drivers/acpi/processor_perflib.c
+++ b/drivers/acpi/processor_perflib.c
@@ -165,37 +165,6 @@ void acpi_processor_ppc_exit(void) {
165 acpi_processor_ppc_status &= ~PPC_REGISTERED; 165 acpi_processor_ppc_status &= ~PPC_REGISTERED;
166} 166}
167 167
168/*
169 * when registering a cpufreq driver with this ACPI processor driver, the
170 * _PCT and _PSS structures are read out and written into struct
171 * acpi_processor_performance.
172 */
173static int acpi_processor_set_pdc (struct acpi_processor *pr)
174{
175 acpi_status status = AE_OK;
176 u32 arg0_buf[3];
177 union acpi_object arg0 = {ACPI_TYPE_BUFFER};
178 struct acpi_object_list no_object = {1, &arg0};
179 struct acpi_object_list *pdc;
180
181 ACPI_FUNCTION_TRACE("acpi_processor_set_pdc");
182
183 arg0.buffer.length = 12;
184 arg0.buffer.pointer = (u8 *) arg0_buf;
185 arg0_buf[0] = ACPI_PDC_REVISION_ID;
186 arg0_buf[1] = 0;
187 arg0_buf[2] = 0;
188
189 pdc = (pr->performance->pdc) ? pr->performance->pdc : &no_object;
190
191 status = acpi_evaluate_object(pr->handle, "_PDC", pdc, NULL);
192
193 if ((ACPI_FAILURE(status)) && (pr->performance->pdc))
194 ACPI_DEBUG_PRINT((ACPI_DB_INFO, "Error evaluating _PDC, using legacy perf. control...\n"));
195
196 return_VALUE(status);
197}
198
199 168
200static int 169static int
201acpi_processor_get_performance_control ( 170acpi_processor_get_performance_control (
@@ -357,7 +326,7 @@ acpi_processor_get_performance_info (
357 if (!pr || !pr->performance || !pr->handle) 326 if (!pr || !pr->performance || !pr->handle)
358 return_VALUE(-EINVAL); 327 return_VALUE(-EINVAL);
359 328
360 acpi_processor_set_pdc(pr); 329 acpi_processor_set_pdc(pr, pr->performance->pdc);
361 330
362 status = acpi_get_handle(pr->handle, "_PCT", &handle); 331 status = acpi_get_handle(pr->handle, "_PCT", &handle);
363 if (ACPI_FAILURE(status)) { 332 if (ACPI_FAILURE(status)) {
diff --git a/include/acpi/pdc_intel.h b/include/acpi/pdc_intel.h
new file mode 100644
index 000000000000..fd6730e4e567
--- /dev/null
+++ b/include/acpi/pdc_intel.h
@@ -0,0 +1,29 @@
1
2/* _PDC bit definition for Intel processors */
3
4#ifndef __PDC_INTEL_H__
5#define __PDC_INTEL_H__
6
7#define ACPI_PDC_P_FFH (0x0001)
8#define ACPI_PDC_C_C1_HALT (0x0002)
9#define ACPI_PDC_T_FFH (0x0004)
10#define ACPI_PDC_SMP_C1PT (0x0008)
11#define ACPI_PDC_SMP_C2C3 (0x0010)
12#define ACPI_PDC_SMP_P_SWCOORD (0x0020)
13#define ACPI_PDC_SMP_C_SWCOORD (0x0040)
14#define ACPI_PDC_SMP_T_SWCOORD (0x0080)
15#define ACPI_PDC_C_C1_FFH (0x0100)
16
17
18#define ACPI_PDC_EST_CAPABILITY_SMP (ACPI_PDC_SMP_C1PT | \
19 ACPI_PDC_C_C1_HALT)
20
21#define ACPI_PDC_EST_CAPABILITY_SMP_MSR (ACPI_PDC_EST_CAPABILITY_SMP | \
22 ACPI_PDC_P_FFH)
23
24#define ACPI_PDC_C_CAPABILITY_SMP (ACPI_PDC_SMP_C2C3 | \
25 ACPI_PDC_SMP_C1PT | \
26 ACPI_PDC_C_C1_HALT)
27
28#endif /* __PDC_INTEL_H__ */
29
diff --git a/include/acpi/processor.h b/include/acpi/processor.h
index 2f50a5bb0c78..50cfea4ff6ca 100644
--- a/include/acpi/processor.h
+++ b/include/acpi/processor.h
@@ -4,6 +4,8 @@
4#include <linux/kernel.h> 4#include <linux/kernel.h>
5#include <linux/config.h> 5#include <linux/config.h>
6 6
7#include <asm/acpi.h>
8
7#define ACPI_PROCESSOR_BUSY_METRIC 10 9#define ACPI_PROCESSOR_BUSY_METRIC 10
8 10
9#define ACPI_PROCESSOR_MAX_POWER 8 11#define ACPI_PROCESSOR_MAX_POWER 8
@@ -14,6 +16,8 @@
14#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */ 16#define ACPI_PROCESSOR_MAX_THROTTLE 250 /* 25% */
15#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4 17#define ACPI_PROCESSOR_MAX_DUTY_WIDTH 4
16 18
19#define ACPI_PDC_REVISION_ID 0x1
20
17/* Power Management */ 21/* Power Management */
18 22
19struct acpi_processor_cx; 23struct acpi_processor_cx;
@@ -59,6 +63,9 @@ struct acpi_processor_power {
59 u32 bm_activity; 63 u32 bm_activity;
60 int count; 64 int count;
61 struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER]; 65 struct acpi_processor_cx states[ACPI_PROCESSOR_MAX_POWER];
66
67 /* the _PDC objects passed by the driver, if any */
68 struct acpi_object_list *pdc;
62}; 69};
63 70
64/* Performance Management */ 71/* Performance Management */
@@ -82,8 +89,6 @@ struct acpi_processor_px {
82 acpi_integer status; /* success indicator */ 89 acpi_integer status; /* success indicator */
83}; 90};
84 91
85#define ACPI_PDC_REVISION_ID 0x1
86
87struct acpi_processor_performance { 92struct acpi_processor_performance {
88 unsigned int state; 93 unsigned int state;
89 unsigned int platform_limit; 94 unsigned int platform_limit;
@@ -179,7 +184,32 @@ int acpi_processor_notify_smm(struct module *calling_module);
179extern struct acpi_processor *processors[NR_CPUS]; 184extern struct acpi_processor *processors[NR_CPUS];
180extern struct acpi_processor_errata errata; 185extern struct acpi_processor_errata errata;
181 186
187int acpi_processor_set_pdc(struct acpi_processor *pr,
188 struct acpi_object_list *pdc_in);
189
190#ifdef ARCH_HAS_POWER_PDC_INIT
191void acpi_processor_power_init_pdc(struct acpi_processor_power *pow,
192 unsigned int cpu);
193void acpi_processor_power_init_bm_check(struct acpi_processor_flags *flags,
194 unsigned int cpu);
195#else
196static inline void acpi_processor_power_init_pdc(
197 struct acpi_processor_power *pow, unsigned int cpu)
198{
199 pow->pdc = NULL;
200 return;
201}
202
203static inline void acpi_processor_power_init_bm_check(
204 struct acpi_processor_flags *flags, unsigned int cpu)
205{
206 flags->bm_check = 1;
207 return;
208}
209#endif
210
182/* in processor_perflib.c */ 211/* in processor_perflib.c */
212
183#ifdef CONFIG_CPU_FREQ 213#ifdef CONFIG_CPU_FREQ
184void acpi_processor_ppc_init(void); 214void acpi_processor_ppc_init(void);
185void acpi_processor_ppc_exit(void); 215void acpi_processor_ppc_exit(void);
diff --git a/include/asm-i386/acpi.h b/include/asm-i386/acpi.h
index c976c1dadece..cf828ace13f9 100644
--- a/include/asm-i386/acpi.h
+++ b/include/asm-i386/acpi.h
@@ -28,6 +28,8 @@
28 28
29#ifdef __KERNEL__ 29#ifdef __KERNEL__
30 30
31#include <acpi/pdc_intel.h>
32
31#include <asm/system.h> /* defines cmpxchg */ 33#include <asm/system.h> /* defines cmpxchg */
32 34
33#define COMPILER_DEPENDENT_INT64 long long 35#define COMPILER_DEPENDENT_INT64 long long
@@ -101,12 +103,6 @@ __acpi_release_global_lock (unsigned int *lock)
101 :"=r"(n_hi), "=r"(n_lo) \ 103 :"=r"(n_hi), "=r"(n_lo) \
102 :"0"(n_hi), "1"(n_lo)) 104 :"0"(n_hi), "1"(n_lo))
103 105
104/*
105 * Refer Intel ACPI _PDC support document for bit definitions
106 */
107#define ACPI_PDC_EST_CAPABILITY_SMP 0xa
108#define ACPI_PDC_EST_CAPABILITY_MSR 0x1
109
110#ifdef CONFIG_ACPI_BOOT 106#ifdef CONFIG_ACPI_BOOT
111extern int acpi_lapic; 107extern int acpi_lapic;
112extern int acpi_ioapic; 108extern int acpi_ioapic;
@@ -185,6 +181,8 @@ extern void acpi_reserve_bootmem(void);
185 181
186extern u8 x86_acpiid_to_apicid[]; 182extern u8 x86_acpiid_to_apicid[];
187 183
184#define ARCH_HAS_POWER_PDC_INIT 1
185
188#endif /*__KERNEL__*/ 186#endif /*__KERNEL__*/
189 187
190#endif /*_ASM_ACPI_H*/ 188#endif /*_ASM_ACPI_H*/
diff --git a/include/asm-x86_64/acpi.h b/include/asm-x86_64/acpi.h
index a6b41b892062..dc8c981af27f 100644
--- a/include/asm-x86_64/acpi.h
+++ b/include/asm-x86_64/acpi.h
@@ -28,6 +28,8 @@
28 28
29#ifdef __KERNEL__ 29#ifdef __KERNEL__
30 30
31#include <acpi/pdc_intel.h>
32
31#define COMPILER_DEPENDENT_INT64 long long 33#define COMPILER_DEPENDENT_INT64 long long
32#define COMPILER_DEPENDENT_UINT64 unsigned long long 34#define COMPILER_DEPENDENT_UINT64 unsigned long long
33 35
@@ -99,12 +101,6 @@ __acpi_release_global_lock (unsigned int *lock)
99 :"=r"(n_hi), "=r"(n_lo) \ 101 :"=r"(n_hi), "=r"(n_lo) \
100 :"0"(n_hi), "1"(n_lo)) 102 :"0"(n_hi), "1"(n_lo))
101 103
102/*
103 * Refer Intel ACPI _PDC support document for bit definitions
104 */
105#define ACPI_PDC_EST_CAPABILITY_SMP 0xa
106#define ACPI_PDC_EST_CAPABILITY_MSR 0x1
107
108#ifdef CONFIG_ACPI_BOOT 104#ifdef CONFIG_ACPI_BOOT
109extern int acpi_lapic; 105extern int acpi_lapic;
110extern int acpi_ioapic; 106extern int acpi_ioapic;
generated by cgit v1.2.2 (git 2.25.0) at 2025-12-30 11:46:17 -0500