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1da177e4 LT |
1 | /* |
2 | * boot.c - Architecture-Specific Low-Level ACPI Boot Support | |
3 | * | |
4 | * Copyright (C) 2001, 2002 Paul Diefenbaugh <paul.s.diefenbaugh@intel.com> | |
5 | * Copyright (C) 2001 Jun Nakajima <jun.nakajima@intel.com> | |
6 | * | |
7 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
8 | * | |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | * ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ | |
24 | */ | |
25 | ||
26 | #include <linux/init.h> | |
1da177e4 | 27 | #include <linux/acpi.h> |
d66bea57 | 28 | #include <linux/acpi_pmtmr.h> |
1da177e4 | 29 | #include <linux/efi.h> |
73fea175 | 30 | #include <linux/cpumask.h> |
1da177e4 | 31 | #include <linux/module.h> |
aea00143 | 32 | #include <linux/dmi.h> |
b33fa1f3 | 33 | #include <linux/irq.h> |
f0f4c343 AD |
34 | #include <linux/bootmem.h> |
35 | #include <linux/ioport.h> | |
1da177e4 LT |
36 | |
37 | #include <asm/pgtable.h> | |
38 | #include <asm/io_apic.h> | |
39 | #include <asm/apic.h> | |
40 | #include <asm/io.h> | |
1da177e4 | 41 | #include <asm/mpspec.h> |
dfac2189 | 42 | #include <asm/smp.h> |
1da177e4 | 43 | |
f6bc4029 GOC |
44 | #ifdef CONFIG_X86_LOCAL_APIC |
45 | # include <mach_apic.h> | |
46 | #endif | |
47 | ||
e8924acb | 48 | static int __initdata acpi_force = 0; |
1a3f239d | 49 | |
df3bb57d AK |
50 | #ifdef CONFIG_ACPI |
51 | int acpi_disabled = 0; | |
52 | #else | |
53 | int acpi_disabled = 1; | |
54 | #endif | |
55 | EXPORT_SYMBOL(acpi_disabled); | |
56 | ||
1da177e4 LT |
57 | #ifdef CONFIG_X86_64 |
58 | ||
1da177e4 | 59 | #include <asm/proto.h> |
ae261868 | 60 | #include <asm/genapic.h> |
637029c6 | 61 | |
4be44fcd | 62 | #else /* X86 */ |
1da177e4 LT |
63 | |
64 | #ifdef CONFIG_X86_LOCAL_APIC | |
65 | #include <mach_apic.h> | |
66 | #include <mach_mpparse.h> | |
4be44fcd | 67 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 68 | |
4be44fcd | 69 | #endif /* X86 */ |
1da177e4 LT |
70 | |
71 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
72 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
5f3b1a8b | 73 | ((struct acpi_subtable_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
74 | |
75 | #define PREFIX "ACPI: " | |
76 | ||
90d53909 | 77 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
6e4be1ff YL |
78 | int acpi_pci_disabled; /* skip ACPI PCI scan and IRQ initialization */ |
79 | EXPORT_SYMBOL(acpi_pci_disabled); | |
1da177e4 LT |
80 | int acpi_ht __initdata = 1; /* enable HT */ |
81 | ||
82 | int acpi_lapic; | |
83 | int acpi_ioapic; | |
84 | int acpi_strict; | |
1da177e4 | 85 | |
5f3b1a8b | 86 | u8 acpi_sci_flags __initdata; |
1da177e4 LT |
87 | int acpi_sci_override_gsi __initdata; |
88 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 89 | int acpi_use_timer_override __initdata; |
1da177e4 LT |
90 | |
91 | #ifdef CONFIG_X86_LOCAL_APIC | |
92 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
93 | #endif | |
94 | ||
95 | #ifndef __HAVE_ARCH_CMPXCHG | |
96 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
97 | #endif | |
98 | ||
1da177e4 LT |
99 | /* -------------------------------------------------------------------------- |
100 | Boot-time Configuration | |
101 | -------------------------------------------------------------------------- */ | |
102 | ||
103 | /* | |
104 | * The default interrupt routing model is PIC (8259). This gets | |
27b46d76 | 105 | * overridden if IOAPICs are enumerated (below). |
1da177e4 | 106 | */ |
4be44fcd | 107 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 LT |
108 | |
109 | #ifdef CONFIG_X86_64 | |
110 | ||
111 | /* rely on all ACPI tables being in the direct mapping */ | |
2fdf0741 | 112 | char *__init __acpi_map_table(unsigned long phys_addr, unsigned long size) |
1da177e4 LT |
113 | { |
114 | if (!phys_addr || !size) | |
4be44fcd | 115 | return NULL; |
1da177e4 | 116 | |
67794292 | 117 | if (phys_addr+size <= (max_pfn_mapped << PAGE_SHIFT) + PAGE_SIZE) |
1da177e4 LT |
118 | return __va(phys_addr); |
119 | ||
120 | return NULL; | |
121 | } | |
122 | ||
123 | #else | |
124 | ||
125 | /* | |
126 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, | |
127 | * to map the target physical address. The problem is that set_fixmap() | |
128 | * provides a single page, and it is possible that the page is not | |
129 | * sufficient. | |
130 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, | |
131 | * i.e. until the next __va_range() call. | |
132 | * | |
133 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* | |
134 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and | |
135 | * count idx down while incrementing the phys address. | |
136 | */ | |
2fdf0741 | 137 | char *__init __acpi_map_table(unsigned long phys, unsigned long size) |
1da177e4 LT |
138 | { |
139 | unsigned long base, offset, mapped_size; | |
140 | int idx; | |
141 | ||
4be44fcd LB |
142 | if (phys + size < 8 * 1024 * 1024) |
143 | return __va(phys); | |
1da177e4 LT |
144 | |
145 | offset = phys & (PAGE_SIZE - 1); | |
146 | mapped_size = PAGE_SIZE - offset; | |
147 | set_fixmap(FIX_ACPI_END, phys); | |
148 | base = fix_to_virt(FIX_ACPI_END); | |
149 | ||
150 | /* | |
151 | * Most cases can be covered by the below. | |
152 | */ | |
153 | idx = FIX_ACPI_END; | |
154 | while (mapped_size < size) { | |
155 | if (--idx < FIX_ACPI_BEGIN) | |
156 | return NULL; /* cannot handle this */ | |
157 | phys += PAGE_SIZE; | |
158 | set_fixmap(idx, phys); | |
159 | mapped_size += PAGE_SIZE; | |
160 | } | |
161 | ||
4be44fcd | 162 | return ((unsigned char *)base + offset); |
1da177e4 LT |
163 | } |
164 | #endif | |
165 | ||
166 | #ifdef CONFIG_PCI_MMCONFIG | |
54549391 | 167 | /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */ |
15a58ed1 | 168 | struct acpi_mcfg_allocation *pci_mmcfg_config; |
54549391 GKH |
169 | int pci_mmcfg_config_num; |
170 | ||
ceb6c468 | 171 | int __init acpi_parse_mcfg(struct acpi_table_header *header) |
1da177e4 LT |
172 | { |
173 | struct acpi_table_mcfg *mcfg; | |
54549391 GKH |
174 | unsigned long i; |
175 | int config_size; | |
1da177e4 | 176 | |
ceb6c468 | 177 | if (!header) |
1da177e4 LT |
178 | return -EINVAL; |
179 | ||
ceb6c468 | 180 | mcfg = (struct acpi_table_mcfg *)header; |
1da177e4 | 181 | |
54549391 GKH |
182 | /* how many config structures do we have */ |
183 | pci_mmcfg_config_num = 0; | |
ceb6c468 | 184 | i = header->length - sizeof(struct acpi_table_mcfg); |
15a58ed1 | 185 | while (i >= sizeof(struct acpi_mcfg_allocation)) { |
54549391 | 186 | ++pci_mmcfg_config_num; |
15a58ed1 | 187 | i -= sizeof(struct acpi_mcfg_allocation); |
54549391 GKH |
188 | }; |
189 | if (pci_mmcfg_config_num == 0) { | |
190 | printk(KERN_ERR PREFIX "MMCONFIG has no entries\n"); | |
1da177e4 LT |
191 | return -ENODEV; |
192 | } | |
193 | ||
54549391 GKH |
194 | config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config); |
195 | pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL); | |
196 | if (!pci_mmcfg_config) { | |
197 | printk(KERN_WARNING PREFIX | |
198 | "No memory for MCFG config tables\n"); | |
199 | return -ENOMEM; | |
200 | } | |
201 | ||
ad363f80 | 202 | memcpy(pci_mmcfg_config, &mcfg[1], config_size); |
54549391 | 203 | for (i = 0; i < pci_mmcfg_config_num; ++i) { |
15a58ed1 | 204 | if (pci_mmcfg_config[i].address > 0xFFFFFFFF) { |
54549391 GKH |
205 | printk(KERN_ERR PREFIX |
206 | "MMCONFIG not in low 4GB of memory\n"); | |
acc7c2e0 KR |
207 | kfree(pci_mmcfg_config); |
208 | pci_mmcfg_config_num = 0; | |
54549391 GKH |
209 | return -ENODEV; |
210 | } | |
211 | } | |
1da177e4 LT |
212 | |
213 | return 0; | |
214 | } | |
4be44fcd | 215 | #endif /* CONFIG_PCI_MMCONFIG */ |
1da177e4 LT |
216 | |
217 | #ifdef CONFIG_X86_LOCAL_APIC | |
15a58ed1 | 218 | static int __init acpi_parse_madt(struct acpi_table_header *table) |
1da177e4 | 219 | { |
4be44fcd | 220 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 221 | |
15a58ed1 | 222 | if (!cpu_has_apic) |
1da177e4 LT |
223 | return -EINVAL; |
224 | ||
15a58ed1 | 225 | madt = (struct acpi_table_madt *)table; |
1da177e4 LT |
226 | if (!madt) { |
227 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
228 | return -ENODEV; | |
229 | } | |
230 | ||
ad363f80 AS |
231 | if (madt->address) { |
232 | acpi_lapic_addr = (u64) madt->address; | |
1da177e4 LT |
233 | |
234 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
ad363f80 | 235 | madt->address); |
1da177e4 LT |
236 | } |
237 | ||
238 | acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id); | |
4be44fcd | 239 | |
1da177e4 LT |
240 | return 0; |
241 | } | |
242 | ||
dfac2189 AS |
243 | static void __cpuinit acpi_register_lapic(int id, u8 enabled) |
244 | { | |
245 | if (!enabled) { | |
246 | ++disabled_cpus; | |
247 | return; | |
248 | } | |
249 | ||
250 | generic_processor_info(id, 0); | |
251 | } | |
252 | ||
1da177e4 | 253 | static int __init |
5f3b1a8b | 254 | acpi_parse_lapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 255 | { |
5f3b1a8b | 256 | struct acpi_madt_local_apic *processor = NULL; |
1da177e4 | 257 | |
5f3b1a8b | 258 | processor = (struct acpi_madt_local_apic *)header; |
1da177e4 LT |
259 | |
260 | if (BAD_MADT_ENTRY(processor, end)) | |
261 | return -EINVAL; | |
262 | ||
263 | acpi_table_print_madt_entry(header); | |
264 | ||
7f66ae48 AR |
265 | /* |
266 | * We need to register disabled CPU as well to permit | |
267 | * counting disabled CPUs. This allows us to size | |
268 | * cpus_possible_map more accurately, to permit | |
269 | * to not preallocating memory for all NR_CPUS | |
270 | * when we use CPU hotplug. | |
271 | */ | |
dfac2189 AS |
272 | acpi_register_lapic(processor->id, /* APIC ID */ |
273 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
1da177e4 LT |
274 | |
275 | return 0; | |
276 | } | |
277 | ||
ac049c1d JS |
278 | static int __init |
279 | acpi_parse_sapic(struct acpi_subtable_header *header, const unsigned long end) | |
280 | { | |
281 | struct acpi_madt_local_sapic *processor = NULL; | |
282 | ||
283 | processor = (struct acpi_madt_local_sapic *)header; | |
284 | ||
285 | if (BAD_MADT_ENTRY(processor, end)) | |
286 | return -EINVAL; | |
287 | ||
288 | acpi_table_print_madt_entry(header); | |
289 | ||
dfac2189 AS |
290 | acpi_register_lapic((processor->id << 8) | processor->eid,/* APIC ID */ |
291 | processor->lapic_flags & ACPI_MADT_ENABLED); | |
ac049c1d JS |
292 | |
293 | return 0; | |
294 | } | |
295 | ||
1da177e4 | 296 | static int __init |
5f3b1a8b | 297 | acpi_parse_lapic_addr_ovr(struct acpi_subtable_header * header, |
4be44fcd | 298 | const unsigned long end) |
1da177e4 | 299 | { |
5f3b1a8b | 300 | struct acpi_madt_local_apic_override *lapic_addr_ovr = NULL; |
1da177e4 | 301 | |
5f3b1a8b | 302 | lapic_addr_ovr = (struct acpi_madt_local_apic_override *)header; |
1da177e4 LT |
303 | |
304 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
305 | return -EINVAL; | |
306 | ||
307 | acpi_lapic_addr = lapic_addr_ovr->address; | |
308 | ||
309 | return 0; | |
310 | } | |
311 | ||
312 | static int __init | |
5f3b1a8b | 313 | acpi_parse_lapic_nmi(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 314 | { |
5f3b1a8b | 315 | struct acpi_madt_local_apic_nmi *lapic_nmi = NULL; |
1da177e4 | 316 | |
5f3b1a8b | 317 | lapic_nmi = (struct acpi_madt_local_apic_nmi *)header; |
1da177e4 LT |
318 | |
319 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
320 | return -EINVAL; | |
321 | ||
322 | acpi_table_print_madt_entry(header); | |
323 | ||
324 | if (lapic_nmi->lint != 1) | |
325 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
326 | ||
327 | return 0; | |
328 | } | |
329 | ||
4be44fcd | 330 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 331 | |
8466361a | 332 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 | 333 | |
9e5c5f1d AS |
334 | struct mp_ioapic_routing mp_ioapic_routing[MAX_IO_APICS]; |
335 | ||
1da177e4 | 336 | static int __init |
5f3b1a8b | 337 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 338 | { |
5f3b1a8b | 339 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 340 | |
5f3b1a8b | 341 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
342 | |
343 | if (BAD_MADT_ENTRY(ioapic, end)) | |
344 | return -EINVAL; | |
4be44fcd | 345 | |
1da177e4 LT |
346 | acpi_table_print_madt_entry(header); |
347 | ||
4be44fcd LB |
348 | mp_register_ioapic(ioapic->id, |
349 | ioapic->address, ioapic->global_irq_base); | |
350 | ||
1da177e4 LT |
351 | return 0; |
352 | } | |
353 | ||
354 | /* | |
355 | * Parse Interrupt Source Override for the ACPI SCI | |
356 | */ | |
e82c354b | 357 | static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) |
1da177e4 LT |
358 | { |
359 | if (trigger == 0) /* compatible SCI trigger is level */ | |
360 | trigger = 3; | |
361 | ||
362 | if (polarity == 0) /* compatible SCI polarity is low */ | |
363 | polarity = 3; | |
364 | ||
365 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
366 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
367 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 368 | |
5f3b1a8b AS |
369 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
370 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 LT |
371 | |
372 | /* | |
4be44fcd | 373 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
374 | * If GSI is < 16, this will update its flags, |
375 | * else it will create a new mp_irqs[] entry. | |
376 | */ | |
7bdd21ce | 377 | mp_override_legacy_irq(gsi, polarity, trigger, gsi); |
1da177e4 LT |
378 | |
379 | /* | |
380 | * stash over-ride to indicate we've been here | |
cee324b1 | 381 | * and for later update of acpi_gbl_FADT |
1da177e4 | 382 | */ |
7bdd21ce | 383 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
384 | return; |
385 | } | |
386 | ||
387 | static int __init | |
5f3b1a8b | 388 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 389 | const unsigned long end) |
1da177e4 | 390 | { |
5f3b1a8b | 391 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 392 | |
5f3b1a8b | 393 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
394 | |
395 | if (BAD_MADT_ENTRY(intsrc, end)) | |
396 | return -EINVAL; | |
397 | ||
398 | acpi_table_print_madt_entry(header); | |
399 | ||
5f3b1a8b | 400 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
7bdd21ce | 401 | acpi_sci_ioapic_setup(intsrc->global_irq, |
5f3b1a8b AS |
402 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
403 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); | |
1da177e4 LT |
404 | return 0; |
405 | } | |
406 | ||
407 | if (acpi_skip_timer_override && | |
5f3b1a8b | 408 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
4be44fcd LB |
409 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
410 | return 0; | |
1da177e4 LT |
411 | } |
412 | ||
5f3b1a8b AS |
413 | mp_override_legacy_irq(intsrc->source_irq, |
414 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
415 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
416 | intsrc->global_irq); | |
1da177e4 LT |
417 | |
418 | return 0; | |
419 | } | |
420 | ||
1da177e4 | 421 | static int __init |
5f3b1a8b | 422 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 423 | { |
5f3b1a8b | 424 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 425 | |
5f3b1a8b | 426 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
427 | |
428 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
429 | return -EINVAL; | |
430 | ||
431 | acpi_table_print_madt_entry(header); | |
432 | ||
433 | /* TBD: Support nimsrc entries? */ | |
434 | ||
435 | return 0; | |
436 | } | |
437 | ||
4be44fcd | 438 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 439 | |
1da177e4 LT |
440 | /* |
441 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 442 | * |
1da177e4 LT |
443 | * use ELCR to set PIC-mode trigger type for SCI |
444 | * | |
445 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
446 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
447 | * | |
448 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
449 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
450 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
451 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
452 | */ |
453 | ||
4be44fcd | 454 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
455 | { |
456 | unsigned int mask = 1 << irq; | |
457 | unsigned int old, new; | |
458 | ||
459 | /* Real old ELCR mask */ | |
460 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
461 | ||
462 | /* | |
27b46d76 | 463 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
464 | * since we will set it correctly as we enable the PCI irq |
465 | * routing. | |
466 | */ | |
467 | new = acpi_noirq ? old : 0; | |
468 | ||
469 | /* | |
470 | * Update SCI information in the ELCR, it isn't in the PCI | |
471 | * routing tables.. | |
472 | */ | |
473 | switch (trigger) { | |
4be44fcd | 474 | case 1: /* Edge - clear */ |
1da177e4 LT |
475 | new &= ~mask; |
476 | break; | |
4be44fcd | 477 | case 3: /* Level - set */ |
1da177e4 LT |
478 | new |= mask; |
479 | break; | |
480 | } | |
481 | ||
482 | if (old == new) | |
483 | return; | |
484 | ||
485 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
486 | outb(new, 0x4d0); | |
487 | outb(new >> 8, 0x4d1); | |
488 | } | |
489 | ||
1da177e4 LT |
490 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
491 | { | |
f023d764 | 492 | *irq = gsi; |
1da177e4 LT |
493 | return 0; |
494 | } | |
495 | ||
1f3a6a15 KK |
496 | /* |
497 | * success: return IRQ number (>=0) | |
498 | * failure: return < 0 | |
499 | */ | |
cb654695 | 500 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 LT |
501 | { |
502 | unsigned int irq; | |
503 | unsigned int plat_gsi = gsi; | |
504 | ||
505 | #ifdef CONFIG_PCI | |
506 | /* | |
507 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
508 | */ | |
509 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { | |
510 | extern void eisa_set_level_irq(unsigned int irq); | |
511 | ||
cb654695 | 512 | if (triggering == ACPI_LEVEL_SENSITIVE) |
4be44fcd | 513 | eisa_set_level_irq(gsi); |
1da177e4 LT |
514 | } |
515 | #endif | |
516 | ||
517 | #ifdef CONFIG_X86_IO_APIC | |
518 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { | |
cb654695 | 519 | plat_gsi = mp_register_gsi(gsi, triggering, polarity); |
1da177e4 LT |
520 | } |
521 | #endif | |
522 | acpi_gsi_to_irq(plat_gsi, &irq); | |
523 | return irq; | |
524 | } | |
4be44fcd | 525 | |
1da177e4 LT |
526 | /* |
527 | * ACPI based hotplug support for CPU | |
528 | */ | |
529 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
009cbadb SR |
530 | |
531 | static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
1da177e4 | 532 | { |
73fea175 AR |
533 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
534 | union acpi_object *obj; | |
5f3b1a8b | 535 | struct acpi_madt_local_apic *lapic; |
73fea175 AR |
536 | cpumask_t tmp_map, new_map; |
537 | u8 physid; | |
538 | int cpu; | |
539 | ||
540 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
541 | return -EINVAL; | |
542 | ||
543 | if (!buffer.length || !buffer.pointer) | |
544 | return -EINVAL; | |
545 | ||
546 | obj = buffer.pointer; | |
547 | if (obj->type != ACPI_TYPE_BUFFER || | |
548 | obj->buffer.length < sizeof(*lapic)) { | |
549 | kfree(buffer.pointer); | |
550 | return -EINVAL; | |
551 | } | |
552 | ||
5f3b1a8b | 553 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
73fea175 | 554 | |
5f3b1a8b AS |
555 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
556 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
73fea175 AR |
557 | kfree(buffer.pointer); |
558 | return -EINVAL; | |
559 | } | |
560 | ||
561 | physid = lapic->id; | |
562 | ||
563 | kfree(buffer.pointer); | |
564 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
565 | buffer.pointer = NULL; | |
566 | ||
567 | tmp_map = cpu_present_map; | |
dfac2189 | 568 | acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
73fea175 AR |
569 | |
570 | /* | |
571 | * If mp_register_lapic successfully generates a new logical cpu | |
572 | * number, then the following will get us exactly what was mapped | |
573 | */ | |
574 | cpus_andnot(new_map, cpu_present_map, tmp_map); | |
575 | if (cpus_empty(new_map)) { | |
576 | printk ("Unable to map lapic to logical cpu number\n"); | |
577 | return -EINVAL; | |
578 | } | |
579 | ||
580 | cpu = first_cpu(new_map); | |
581 | ||
582 | *pcpu = cpu; | |
583 | return 0; | |
1da177e4 | 584 | } |
1da177e4 | 585 | |
009cbadb SR |
586 | /* wrapper to silence section mismatch warning */ |
587 | int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
588 | { | |
589 | return _acpi_map_lsapic(handle, pcpu); | |
590 | } | |
4be44fcd | 591 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 592 | |
4be44fcd | 593 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 594 | { |
71fff5e6 | 595 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
73fea175 AR |
596 | cpu_clear(cpu, cpu_present_map); |
597 | num_processors--; | |
598 | ||
599 | return (0); | |
1da177e4 | 600 | } |
4be44fcd | 601 | |
1da177e4 | 602 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 603 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 604 | |
4be44fcd | 605 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
606 | { |
607 | /* TBD */ | |
608 | return -EINVAL; | |
609 | } | |
4be44fcd | 610 | |
b1bb248a KK |
611 | EXPORT_SYMBOL(acpi_register_ioapic); |
612 | ||
4be44fcd | 613 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
614 | { |
615 | /* TBD */ | |
616 | return -EINVAL; | |
617 | } | |
4be44fcd | 618 | |
b1bb248a KK |
619 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
620 | ||
5f3b1a8b | 621 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 622 | { |
5f3b1a8b | 623 | struct acpi_table_boot *sb; |
1da177e4 | 624 | |
5f3b1a8b | 625 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
626 | if (!sb) { |
627 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
628 | return -ENODEV; | |
629 | } | |
630 | ||
5f3b1a8b | 631 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
632 | |
633 | return 0; | |
634 | } | |
635 | ||
1da177e4 | 636 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 637 | #include <asm/hpet.h> |
1da177e4 | 638 | |
a1dfd851 AD |
639 | static struct __initdata resource *hpet_res; |
640 | ||
5f3b1a8b | 641 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
642 | { |
643 | struct acpi_table_hpet *hpet_tbl; | |
644 | ||
5f3b1a8b | 645 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
646 | if (!hpet_tbl) { |
647 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
648 | return -ENODEV; | |
649 | } | |
650 | ||
ad363f80 | 651 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
652 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
653 | "memory.\n"); | |
654 | return -1; | |
655 | } | |
f0f4c343 | 656 | |
2d0c87c3 | 657 | hpet_address = hpet_tbl->address.address; |
f4df73c2 TG |
658 | |
659 | /* | |
660 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
661 | * want to allocate a resource there. | |
662 | */ | |
663 | if (!hpet_address) { | |
664 | printk(KERN_WARNING PREFIX | |
665 | "HPET id: %#x base: %#lx is invalid\n", | |
666 | hpet_tbl->id, hpet_address); | |
667 | return 0; | |
668 | } | |
669 | #ifdef CONFIG_X86_64 | |
670 | /* | |
671 | * Some even more broken BIOSes advertise HPET at | |
672 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
673 | * some noise: | |
674 | */ | |
675 | if (hpet_address == 0xfed0000000000000UL) { | |
676 | if (!hpet_force_user) { | |
677 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
678 | "base: 0xfed0000000000000 is bogus\n " | |
679 | "try hpet=force on the kernel command line to " | |
680 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
681 | hpet_address = 0; | |
682 | return 0; | |
683 | } | |
684 | printk(KERN_WARNING PREFIX | |
685 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
686 | "to 0xfed00000.\n", hpet_tbl->id); | |
687 | hpet_address >>= 32; | |
688 | } | |
689 | #endif | |
4be44fcd | 690 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 691 | hpet_tbl->id, hpet_address); |
1da177e4 | 692 | |
a1dfd851 AD |
693 | /* |
694 | * Allocate and initialize the HPET firmware resource for adding into | |
695 | * the resource tree during the lateinit timeframe. | |
696 | */ | |
697 | #define HPET_RESOURCE_NAME_SIZE 9 | |
698 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
699 | ||
a1dfd851 AD |
700 | hpet_res->name = (void *)&hpet_res[1]; |
701 | hpet_res->flags = IORESOURCE_MEM; | |
702 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
703 | hpet_tbl->sequence); | |
704 | ||
705 | hpet_res->start = hpet_address; | |
706 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
707 | ||
1da177e4 LT |
708 | return 0; |
709 | } | |
a1dfd851 AD |
710 | |
711 | /* | |
712 | * hpet_insert_resource inserts the HPET resources used into the resource | |
713 | * tree. | |
714 | */ | |
715 | static __init int hpet_insert_resource(void) | |
716 | { | |
717 | if (!hpet_res) | |
718 | return 1; | |
719 | ||
720 | return insert_resource(&iomem_resource, hpet_res); | |
721 | } | |
722 | ||
723 | late_initcall(hpet_insert_resource); | |
724 | ||
1da177e4 LT |
725 | #else |
726 | #define acpi_parse_hpet NULL | |
727 | #endif | |
728 | ||
5f3b1a8b | 729 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 730 | { |
90660ec3 | 731 | |
1da177e4 LT |
732 | #ifdef CONFIG_X86_PM_TIMER |
733 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 734 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 735 | /* FADT rev. 2 */ |
5f3b1a8b | 736 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 737 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
738 | return 0; |
739 | ||
5f3b1a8b | 740 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
741 | /* |
742 | * "X" fields are optional extensions to the original V1.0 | |
743 | * fields, so we must selectively expand V1.0 fields if the | |
744 | * corresponding X field is zero. | |
745 | */ | |
746 | if (!pmtmr_ioport) | |
5f3b1a8b | 747 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
748 | } else { |
749 | /* FADT rev. 1 */ | |
5f3b1a8b | 750 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
751 | } |
752 | if (pmtmr_ioport) | |
4be44fcd LB |
753 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
754 | pmtmr_ioport); | |
1da177e4 LT |
755 | #endif |
756 | return 0; | |
757 | } | |
758 | ||
1da177e4 LT |
759 | #ifdef CONFIG_X86_LOCAL_APIC |
760 | /* | |
761 | * Parse LAPIC entries in MADT | |
762 | * returns 0 on success, < 0 on error | |
763 | */ | |
31d2092e AS |
764 | |
765 | static void __init acpi_register_lapic_address(unsigned long address) | |
766 | { | |
767 | mp_lapic_addr = address; | |
768 | ||
769 | set_fixmap_nocache(FIX_APIC_BASE, address); | |
770 | if (boot_cpu_physical_apicid == -1U) | |
771 | boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id()); | |
772 | } | |
773 | ||
4be44fcd | 774 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
775 | { |
776 | int count; | |
777 | ||
0fcd2709 AK |
778 | if (!cpu_has_apic) |
779 | return -ENODEV; | |
780 | ||
5f3b1a8b | 781 | /* |
1da177e4 LT |
782 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
783 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
784 | */ | |
785 | ||
4be44fcd | 786 | count = |
5f3b1a8b | 787 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 788 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 789 | if (count < 0) { |
4be44fcd LB |
790 | printk(KERN_ERR PREFIX |
791 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
792 | return count; |
793 | } | |
794 | ||
31d2092e | 795 | acpi_register_lapic_address(acpi_lapic_addr); |
1da177e4 | 796 | |
ac049c1d JS |
797 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
798 | acpi_parse_sapic, MAX_APICS); | |
799 | ||
800 | if (!count) | |
801 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, | |
802 | acpi_parse_lapic, MAX_APICS); | |
4be44fcd | 803 | if (!count) { |
1da177e4 LT |
804 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
805 | /* TBD: Cleanup to allow fallback to MPS */ | |
806 | return -ENODEV; | |
4be44fcd | 807 | } else if (count < 0) { |
1da177e4 LT |
808 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
809 | /* TBD: Cleanup to allow fallback to MPS */ | |
810 | return count; | |
811 | } | |
812 | ||
4be44fcd | 813 | count = |
5f3b1a8b | 814 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
1da177e4 LT |
815 | if (count < 0) { |
816 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); | |
817 | /* TBD: Cleanup to allow fallback to MPS */ | |
818 | return count; | |
819 | } | |
820 | return 0; | |
821 | } | |
4be44fcd | 822 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 823 | |
8466361a | 824 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
825 | /* |
826 | * Parse IOAPIC related entries in MADT | |
827 | * returns 0 on success, < 0 on error | |
828 | */ | |
4be44fcd | 829 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
830 | { |
831 | int count; | |
832 | ||
833 | /* | |
834 | * ACPI interpreter is required to complete interrupt setup, | |
835 | * so if it is off, don't enumerate the io-apics with ACPI. | |
836 | * If MPS is present, it will handle them, | |
837 | * otherwise the system will stay in PIC mode | |
838 | */ | |
839 | if (acpi_disabled || acpi_noirq) { | |
840 | return -ENODEV; | |
4be44fcd | 841 | } |
1da177e4 | 842 | |
5f3b1a8b | 843 | if (!cpu_has_apic) |
d3b6a349 AK |
844 | return -ENODEV; |
845 | ||
1da177e4 | 846 | /* |
4be44fcd | 847 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
848 | */ |
849 | if (skip_ioapic_setup) { | |
850 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 851 | "due to 'noapic' option.\n"); |
1da177e4 LT |
852 | return -ENODEV; |
853 | } | |
854 | ||
4be44fcd | 855 | count = |
5f3b1a8b | 856 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 857 | MAX_IO_APICS); |
1da177e4 LT |
858 | if (!count) { |
859 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
860 | return -ENODEV; | |
4be44fcd | 861 | } else if (count < 0) { |
1da177e4 LT |
862 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
863 | return count; | |
864 | } | |
865 | ||
4be44fcd | 866 | count = |
5f3b1a8b | 867 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
4be44fcd | 868 | NR_IRQ_VECTORS); |
1da177e4 | 869 | if (count < 0) { |
4be44fcd LB |
870 | printk(KERN_ERR PREFIX |
871 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
872 | /* TBD: Cleanup to allow fallback to MPS */ |
873 | return count; | |
874 | } | |
875 | ||
876 | /* | |
877 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
878 | * pretend we got one so we can set the SCI flags. | |
879 | */ | |
880 | if (!acpi_sci_override_gsi) | |
cee324b1 | 881 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); |
1da177e4 LT |
882 | |
883 | /* Fill in identity legacy mapings where no override */ | |
884 | mp_config_acpi_legacy_irqs(); | |
885 | ||
4be44fcd | 886 | count = |
5f3b1a8b | 887 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
4be44fcd | 888 | NR_IRQ_VECTORS); |
1da177e4 LT |
889 | if (count < 0) { |
890 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
891 | /* TBD: Cleanup to allow fallback to MPS */ | |
892 | return count; | |
893 | } | |
894 | ||
895 | return 0; | |
896 | } | |
897 | #else | |
898 | static inline int acpi_parse_madt_ioapic_entries(void) | |
899 | { | |
900 | return -1; | |
901 | } | |
8466361a | 902 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 903 | |
4be44fcd | 904 | static void __init acpi_process_madt(void) |
1da177e4 LT |
905 | { |
906 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 907 | int error; |
1da177e4 | 908 | |
7f8f97c3 | 909 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
910 | |
911 | /* | |
912 | * Parse MADT LAPIC entries | |
913 | */ | |
914 | error = acpi_parse_madt_lapic_entries(); | |
915 | if (!error) { | |
916 | acpi_lapic = 1; | |
917 | ||
911a62d4 VP |
918 | #ifdef CONFIG_X86_GENERICARCH |
919 | generic_bigsmp_probe(); | |
920 | #endif | |
1da177e4 LT |
921 | /* |
922 | * Parse MADT IO-APIC entries | |
923 | */ | |
924 | error = acpi_parse_madt_ioapic_entries(); | |
925 | if (!error) { | |
926 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
927 | acpi_irq_balance_set(NULL); | |
928 | acpi_ioapic = 1; | |
929 | ||
930 | smp_found_config = 1; | |
3c43f039 | 931 | setup_apic_routing(); |
1da177e4 LT |
932 | } |
933 | } | |
934 | if (error == -EINVAL) { | |
935 | /* | |
936 | * Dell Precision Workstation 410, 610 come here. | |
937 | */ | |
4be44fcd LB |
938 | printk(KERN_ERR PREFIX |
939 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
940 | disable_acpi(); |
941 | } | |
942 | } | |
943 | #endif | |
944 | return; | |
945 | } | |
946 | ||
aea00143 AP |
947 | #ifdef __i386__ |
948 | ||
1855256c | 949 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
950 | { |
951 | if (!acpi_force) { | |
952 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
953 | d->ident); | |
954 | acpi_noirq_set(); | |
955 | } | |
956 | return 0; | |
957 | } | |
958 | ||
1855256c | 959 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
960 | { |
961 | if (!acpi_force) { | |
962 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
963 | d->ident); | |
964 | acpi_disable_pci(); | |
965 | } | |
966 | return 0; | |
967 | } | |
aea00143 | 968 | |
1855256c | 969 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
970 | { |
971 | if (!acpi_force) { | |
4be44fcd | 972 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
973 | disable_acpi(); |
974 | } else { | |
975 | printk(KERN_NOTICE | |
976 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
977 | } | |
978 | return 0; | |
979 | } | |
980 | ||
981 | /* | |
982 | * Limit ACPI to CPU enumeration for HT | |
983 | */ | |
1855256c | 984 | static int __init force_acpi_ht(const struct dmi_system_id *d) |
aea00143 AP |
985 | { |
986 | if (!acpi_force) { | |
4be44fcd LB |
987 | printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", |
988 | d->ident); | |
aea00143 AP |
989 | disable_acpi(); |
990 | acpi_ht = 1; | |
991 | } else { | |
992 | printk(KERN_NOTICE | |
993 | "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); | |
994 | } | |
995 | return 0; | |
996 | } | |
997 | ||
998 | /* | |
999 | * If your system is blacklisted here, but you find that acpi=force | |
1000 | * works for you, please contact acpi-devel@sourceforge.net | |
1001 | */ | |
1002 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1003 | /* | |
1004 | * Boxes that need ACPI disabled | |
1005 | */ | |
1006 | { | |
4be44fcd LB |
1007 | .callback = dmi_disable_acpi, |
1008 | .ident = "IBM Thinkpad", | |
1009 | .matches = { | |
1010 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1011 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1012 | }, | |
1013 | }, | |
aea00143 AP |
1014 | |
1015 | /* | |
1016 | * Boxes that need acpi=ht | |
1017 | */ | |
1018 | { | |
4be44fcd LB |
1019 | .callback = force_acpi_ht, |
1020 | .ident = "FSC Primergy T850", | |
1021 | .matches = { | |
1022 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
1023 | DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), | |
1024 | }, | |
1025 | }, | |
aea00143 | 1026 | { |
4be44fcd LB |
1027 | .callback = force_acpi_ht, |
1028 | .ident = "HP VISUALIZE NT Workstation", | |
1029 | .matches = { | |
1030 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
1031 | DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), | |
1032 | }, | |
1033 | }, | |
aea00143 | 1034 | { |
4be44fcd LB |
1035 | .callback = force_acpi_ht, |
1036 | .ident = "Compaq Workstation W8000", | |
1037 | .matches = { | |
1038 | DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), | |
1039 | DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), | |
1040 | }, | |
1041 | }, | |
aea00143 | 1042 | { |
4be44fcd LB |
1043 | .callback = force_acpi_ht, |
1044 | .ident = "ASUS P4B266", | |
1045 | .matches = { | |
1046 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1047 | DMI_MATCH(DMI_BOARD_NAME, "P4B266"), | |
1048 | }, | |
1049 | }, | |
aea00143 | 1050 | { |
4be44fcd LB |
1051 | .callback = force_acpi_ht, |
1052 | .ident = "ASUS P2B-DS", | |
1053 | .matches = { | |
1054 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1055 | DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), | |
1056 | }, | |
1057 | }, | |
aea00143 | 1058 | { |
4be44fcd LB |
1059 | .callback = force_acpi_ht, |
1060 | .ident = "ASUS CUR-DLS", | |
1061 | .matches = { | |
1062 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1063 | DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), | |
1064 | }, | |
1065 | }, | |
aea00143 | 1066 | { |
4be44fcd LB |
1067 | .callback = force_acpi_ht, |
1068 | .ident = "ABIT i440BX-W83977", | |
1069 | .matches = { | |
1070 | DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), | |
1071 | DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), | |
1072 | }, | |
1073 | }, | |
aea00143 | 1074 | { |
4be44fcd LB |
1075 | .callback = force_acpi_ht, |
1076 | .ident = "IBM Bladecenter", | |
1077 | .matches = { | |
1078 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1079 | DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), | |
1080 | }, | |
1081 | }, | |
aea00143 | 1082 | { |
4be44fcd LB |
1083 | .callback = force_acpi_ht, |
1084 | .ident = "IBM eServer xSeries 360", | |
1085 | .matches = { | |
1086 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1087 | DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), | |
1088 | }, | |
1089 | }, | |
aea00143 | 1090 | { |
4be44fcd LB |
1091 | .callback = force_acpi_ht, |
1092 | .ident = "IBM eserver xSeries 330", | |
1093 | .matches = { | |
1094 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1095 | DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), | |
1096 | }, | |
1097 | }, | |
aea00143 | 1098 | { |
4be44fcd LB |
1099 | .callback = force_acpi_ht, |
1100 | .ident = "IBM eserver xSeries 440", | |
1101 | .matches = { | |
1102 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1103 | DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), | |
1104 | }, | |
1105 | }, | |
aea00143 | 1106 | |
aea00143 AP |
1107 | /* |
1108 | * Boxes that need ACPI PCI IRQ routing disabled | |
1109 | */ | |
1110 | { | |
4be44fcd LB |
1111 | .callback = disable_acpi_irq, |
1112 | .ident = "ASUS A7V", | |
1113 | .matches = { | |
1114 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1115 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1116 | /* newer BIOS, Revision 1011, does work */ | |
1117 | DMI_MATCH(DMI_BIOS_VERSION, | |
1118 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1119 | }, | |
1120 | }, | |
74586fca LB |
1121 | { |
1122 | /* | |
1123 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1124 | * for LPC bridge, which is needed for the PCI | |
1125 | * interrupt links to work. DSDT fix is in bug 5966. | |
1126 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1127 | */ | |
1128 | .callback = disable_acpi_irq, | |
1129 | .ident = "IBM Thinkpad 600 Series 2645", | |
1130 | .matches = { | |
1131 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1132 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1133 | }, | |
1134 | }, | |
1135 | { | |
1136 | .callback = disable_acpi_irq, | |
1137 | .ident = "IBM Thinkpad 600 Series 2646", | |
1138 | .matches = { | |
1139 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1140 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1141 | }, | |
1142 | }, | |
aea00143 AP |
1143 | /* |
1144 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1145 | */ | |
4be44fcd LB |
1146 | { /* _BBN 0 bug */ |
1147 | .callback = disable_acpi_pci, | |
1148 | .ident = "ASUS PR-DLS", | |
1149 | .matches = { | |
1150 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1151 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1152 | DMI_MATCH(DMI_BIOS_VERSION, | |
1153 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1154 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1155 | }, | |
1156 | }, | |
aea00143 | 1157 | { |
4be44fcd LB |
1158 | .callback = disable_acpi_pci, |
1159 | .ident = "Acer TravelMate 36x Laptop", | |
1160 | .matches = { | |
1161 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1162 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1163 | }, | |
1164 | }, | |
4be44fcd | 1165 | {} |
aea00143 AP |
1166 | }; |
1167 | ||
4be44fcd | 1168 | #endif /* __i386__ */ |
aea00143 | 1169 | |
1da177e4 LT |
1170 | /* |
1171 | * acpi_boot_table_init() and acpi_boot_init() | |
1172 | * called from setup_arch(), always. | |
1173 | * 1. checksums all tables | |
1174 | * 2. enumerates lapics | |
1175 | * 3. enumerates io-apics | |
1176 | * | |
1177 | * acpi_table_init() is separate to allow reading SRAT without | |
1178 | * other side effects. | |
1179 | * | |
1180 | * side effects of acpi_boot_init: | |
1181 | * acpi_lapic = 1 if LAPIC found | |
1182 | * acpi_ioapic = 1 if IOAPIC found | |
1183 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1184 | * if acpi_blacklisted() acpi_disabled = 1; | |
1185 | * acpi_irq_model=... | |
1186 | * ... | |
1187 | * | |
1188 | * return value: (currently ignored) | |
1189 | * 0: success | |
1190 | * !0: failure | |
1191 | */ | |
1192 | ||
4be44fcd | 1193 | int __init acpi_boot_table_init(void) |
1da177e4 LT |
1194 | { |
1195 | int error; | |
1196 | ||
aea00143 AP |
1197 | #ifdef __i386__ |
1198 | dmi_check_system(acpi_dmi_table); | |
1199 | #endif | |
1200 | ||
1da177e4 LT |
1201 | /* |
1202 | * If acpi_disabled, bail out | |
1203 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1204 | */ | |
1205 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1206 | return 1; |
1da177e4 | 1207 | |
5f3b1a8b | 1208 | /* |
1da177e4 LT |
1209 | * Initialize the ACPI boot-time table parser. |
1210 | */ | |
1211 | error = acpi_table_init(); | |
1212 | if (error) { | |
1213 | disable_acpi(); | |
1214 | return error; | |
1215 | } | |
1da177e4 | 1216 | |
5f3b1a8b | 1217 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1218 | |
1219 | /* | |
1220 | * blacklist may disable ACPI entirely | |
1221 | */ | |
1222 | error = acpi_blacklisted(); | |
1223 | if (error) { | |
1da177e4 LT |
1224 | if (acpi_force) { |
1225 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1226 | } else { | |
1227 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1228 | disable_acpi(); | |
1229 | return error; | |
1230 | } | |
1231 | } | |
1232 | ||
1233 | return 0; | |
1234 | } | |
1235 | ||
1da177e4 LT |
1236 | int __init acpi_boot_init(void) |
1237 | { | |
1238 | /* | |
1239 | * If acpi_disabled, bail out | |
1240 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1241 | */ | |
1242 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1243 | return 1; |
1da177e4 | 1244 | |
5f3b1a8b | 1245 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1246 | |
1247 | /* | |
1248 | * set sci_int and PM timer address | |
1249 | */ | |
ceb6c468 | 1250 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1251 | |
1252 | /* | |
1253 | * Process the Multiple APIC Description Table (MADT), if present | |
1254 | */ | |
1255 | acpi_process_madt(); | |
1256 | ||
5f3b1a8b | 1257 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 LT |
1258 | |
1259 | return 0; | |
1260 | } | |
1a3f239d RR |
1261 | |
1262 | static int __init parse_acpi(char *arg) | |
1263 | { | |
1264 | if (!arg) | |
1265 | return -EINVAL; | |
1266 | ||
1267 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1268 | if (strcmp(arg, "off") == 0) { | |
1269 | disable_acpi(); | |
1270 | } | |
1271 | /* acpi=force to over-ride black-list */ | |
1272 | else if (strcmp(arg, "force") == 0) { | |
1273 | acpi_force = 1; | |
1274 | acpi_ht = 1; | |
1275 | acpi_disabled = 0; | |
1276 | } | |
1277 | /* acpi=strict disables out-of-spec workarounds */ | |
1278 | else if (strcmp(arg, "strict") == 0) { | |
1279 | acpi_strict = 1; | |
1280 | } | |
1281 | /* Limit ACPI just to boot-time to enable HT */ | |
1282 | else if (strcmp(arg, "ht") == 0) { | |
1283 | if (!acpi_force) | |
1284 | disable_acpi(); | |
1285 | acpi_ht = 1; | |
1286 | } | |
1287 | /* "acpi=noirq" disables ACPI interrupt routing */ | |
1288 | else if (strcmp(arg, "noirq") == 0) { | |
1289 | acpi_noirq_set(); | |
1290 | } else { | |
1291 | /* Core will printk when we return error. */ | |
1292 | return -EINVAL; | |
1293 | } | |
1294 | return 0; | |
1295 | } | |
1296 | early_param("acpi", parse_acpi); | |
1297 | ||
1298 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1299 | static int __init parse_pci(char *arg) | |
1300 | { | |
1301 | if (arg && strcmp(arg, "noacpi") == 0) | |
1302 | acpi_disable_pci(); | |
1303 | return 0; | |
1304 | } | |
1305 | early_param("pci", parse_pci); | |
1306 | ||
1307 | #ifdef CONFIG_X86_IO_APIC | |
1308 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1309 | { | |
1310 | acpi_skip_timer_override = 1; | |
1311 | return 0; | |
1312 | } | |
1313 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1314 | |
1315 | static int __init parse_acpi_use_timer_override(char *arg) | |
1316 | { | |
1317 | acpi_use_timer_override = 1; | |
1318 | return 0; | |
1319 | } | |
1320 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1321 | #endif /* CONFIG_X86_IO_APIC */ |
1322 | ||
1323 | static int __init setup_acpi_sci(char *s) | |
1324 | { | |
1325 | if (!s) | |
1326 | return -EINVAL; | |
1327 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1328 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1329 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1330 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1331 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1332 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1333 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1334 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1335 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1336 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1337 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1338 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1339 | else |
1340 | return -EINVAL; | |
1341 | return 0; | |
1342 | } | |
1343 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1344 | |
1345 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1346 | { | |
1347 | unsigned int old, new, val; | |
1348 | do { | |
1349 | old = *lock; | |
1350 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1351 | val = cmpxchg(lock, old, new); | |
1352 | } while (unlikely (val != old)); | |
1353 | return (new < 3) ? -1 : 0; | |
1354 | } | |
1355 | ||
1356 | int __acpi_release_global_lock(unsigned int *lock) | |
1357 | { | |
1358 | unsigned int old, new, val; | |
1359 | do { | |
1360 | old = *lock; | |
1361 | new = old & ~0x3; | |
1362 | val = cmpxchg(lock, old, new); | |
1363 | } while (unlikely (val != old)); | |
1364 | return old & 0x1; | |
1365 | } |