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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 LT |
27 | #include <linux/acpi.h> |
28 | #include <linux/efi.h> | |
73fea175 | 29 | #include <linux/cpumask.h> |
1da177e4 | 30 | #include <linux/module.h> |
aea00143 | 31 | #include <linux/dmi.h> |
b33fa1f3 | 32 | #include <linux/irq.h> |
f0f4c343 | 33 | #include <linux/bootmem.h> |
34 | #include <linux/ioport.h> | |
1da177e4 LT |
35 | |
36 | #include <asm/pgtable.h> | |
37 | #include <asm/io_apic.h> | |
38 | #include <asm/apic.h> | |
39 | #include <asm/io.h> | |
1da177e4 LT |
40 | #include <asm/mpspec.h> |
41 | ||
e8924acb | 42 | static int __initdata acpi_force = 0; |
1a3f239d | 43 | |
df3bb57d AK |
44 | #ifdef CONFIG_ACPI |
45 | int acpi_disabled = 0; | |
46 | #else | |
47 | int acpi_disabled = 1; | |
48 | #endif | |
49 | EXPORT_SYMBOL(acpi_disabled); | |
50 | ||
1da177e4 LT |
51 | #ifdef CONFIG_X86_64 |
52 | ||
1da177e4 LT |
53 | #include <asm/proto.h> |
54 | ||
637029c6 LT |
55 | static inline int acpi_madt_oem_check(char *oem_id, char *oem_table_id) { return 0; } |
56 | ||
57 | ||
4be44fcd | 58 | #else /* X86 */ |
1da177e4 LT |
59 | |
60 | #ifdef CONFIG_X86_LOCAL_APIC | |
61 | #include <mach_apic.h> | |
62 | #include <mach_mpparse.h> | |
4be44fcd | 63 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 64 | |
4be44fcd | 65 | #endif /* X86 */ |
1da177e4 LT |
66 | |
67 | #define BAD_MADT_ENTRY(entry, end) ( \ | |
68 | (!entry) || (unsigned long)entry + sizeof(*entry) > end || \ | |
df6fd319 | 69 | ((acpi_table_entry_header *)entry)->length < sizeof(*entry)) |
1da177e4 LT |
70 | |
71 | #define PREFIX "ACPI: " | |
72 | ||
90d53909 | 73 | int acpi_noirq; /* skip ACPI IRQ initialization */ |
4be44fcd | 74 | int acpi_pci_disabled __initdata; /* skip ACPI PCI scan and IRQ initialization */ |
1da177e4 LT |
75 | int acpi_ht __initdata = 1; /* enable HT */ |
76 | ||
77 | int acpi_lapic; | |
78 | int acpi_ioapic; | |
79 | int acpi_strict; | |
80 | EXPORT_SYMBOL(acpi_strict); | |
81 | ||
82 | acpi_interrupt_flags acpi_sci_flags __initdata; | |
83 | int acpi_sci_override_gsi __initdata; | |
84 | int acpi_skip_timer_override __initdata; | |
fa18f477 | 85 | int acpi_use_timer_override __initdata; |
1da177e4 LT |
86 | |
87 | #ifdef CONFIG_X86_LOCAL_APIC | |
88 | static u64 acpi_lapic_addr __initdata = APIC_DEFAULT_PHYS_BASE; | |
89 | #endif | |
90 | ||
91 | #ifndef __HAVE_ARCH_CMPXCHG | |
92 | #warning ACPI uses CMPXCHG, i486 and later hardware | |
93 | #endif | |
94 | ||
95 | #define MAX_MADT_ENTRIES 256 | |
96 | u8 x86_acpiid_to_apicid[MAX_MADT_ENTRIES] = | |
1f3a7301 | 97 | {[0 ... MAX_MADT_ENTRIES - 1] = 0xff }; |
1da177e4 LT |
98 | EXPORT_SYMBOL(x86_acpiid_to_apicid); |
99 | ||
100 | /* -------------------------------------------------------------------------- | |
101 | Boot-time Configuration | |
102 | -------------------------------------------------------------------------- */ | |
103 | ||
104 | /* | |
105 | * The default interrupt routing model is PIC (8259). This gets | |
106 | * overriden if IOAPICs are enumerated (below). | |
107 | */ | |
4be44fcd | 108 | enum acpi_irq_model_id acpi_irq_model = ACPI_IRQ_MODEL_PIC; |
1da177e4 LT |
109 | |
110 | #ifdef CONFIG_X86_64 | |
111 | ||
112 | /* rely on all ACPI tables being in the direct mapping */ | |
113 | char *__acpi_map_table(unsigned long phys_addr, unsigned long size) | |
114 | { | |
115 | if (!phys_addr || !size) | |
4be44fcd | 116 | return NULL; |
1da177e4 | 117 | |
7a4a76cc | 118 | if (phys_addr+size <= (end_pfn_map << PAGE_SHIFT) + PAGE_SIZE) |
1da177e4 LT |
119 | return __va(phys_addr); |
120 | ||
121 | return NULL; | |
122 | } | |
123 | ||
124 | #else | |
125 | ||
126 | /* | |
127 | * Temporarily use the virtual area starting from FIX_IO_APIC_BASE_END, | |
128 | * to map the target physical address. The problem is that set_fixmap() | |
129 | * provides a single page, and it is possible that the page is not | |
130 | * sufficient. | |
131 | * By using this area, we can map up to MAX_IO_APICS pages temporarily, | |
132 | * i.e. until the next __va_range() call. | |
133 | * | |
134 | * Important Safety Note: The fixed I/O APIC page numbers are *subtracted* | |
135 | * from the fixed base. That's why we start at FIX_IO_APIC_BASE_END and | |
136 | * count idx down while incrementing the phys address. | |
137 | */ | |
138 | char *__acpi_map_table(unsigned long phys, unsigned long size) | |
139 | { | |
140 | unsigned long base, offset, mapped_size; | |
141 | int idx; | |
142 | ||
4be44fcd LB |
143 | if (phys + size < 8 * 1024 * 1024) |
144 | return __va(phys); | |
1da177e4 LT |
145 | |
146 | offset = phys & (PAGE_SIZE - 1); | |
147 | mapped_size = PAGE_SIZE - offset; | |
148 | set_fixmap(FIX_ACPI_END, phys); | |
149 | base = fix_to_virt(FIX_ACPI_END); | |
150 | ||
151 | /* | |
152 | * Most cases can be covered by the below. | |
153 | */ | |
154 | idx = FIX_ACPI_END; | |
155 | while (mapped_size < size) { | |
156 | if (--idx < FIX_ACPI_BEGIN) | |
157 | return NULL; /* cannot handle this */ | |
158 | phys += PAGE_SIZE; | |
159 | set_fixmap(idx, phys); | |
160 | mapped_size += PAGE_SIZE; | |
161 | } | |
162 | ||
4be44fcd | 163 | return ((unsigned char *)base + offset); |
1da177e4 LT |
164 | } |
165 | #endif | |
166 | ||
167 | #ifdef CONFIG_PCI_MMCONFIG | |
54549391 GKH |
168 | /* The physical address of the MMCONFIG aperture. Set from ACPI tables. */ |
169 | struct acpi_table_mcfg_config *pci_mmcfg_config; | |
170 | int pci_mmcfg_config_num; | |
171 | ||
172 | int __init acpi_parse_mcfg(unsigned long phys_addr, unsigned long size) | |
1da177e4 LT |
173 | { |
174 | struct acpi_table_mcfg *mcfg; | |
54549391 GKH |
175 | unsigned long i; |
176 | int config_size; | |
1da177e4 | 177 | |
87cb23a4 | 178 | if (!phys_addr || !size) |
1da177e4 LT |
179 | return -EINVAL; |
180 | ||
4be44fcd | 181 | mcfg = (struct acpi_table_mcfg *)__acpi_map_table(phys_addr, size); |
1da177e4 LT |
182 | if (!mcfg) { |
183 | printk(KERN_WARNING PREFIX "Unable to map MCFG\n"); | |
184 | return -ENODEV; | |
185 | } | |
186 | ||
54549391 GKH |
187 | /* how many config structures do we have */ |
188 | pci_mmcfg_config_num = 0; | |
189 | i = size - sizeof(struct acpi_table_mcfg); | |
190 | while (i >= sizeof(struct acpi_table_mcfg_config)) { | |
191 | ++pci_mmcfg_config_num; | |
192 | i -= sizeof(struct acpi_table_mcfg_config); | |
193 | }; | |
194 | if (pci_mmcfg_config_num == 0) { | |
195 | printk(KERN_ERR PREFIX "MMCONFIG has no entries\n"); | |
1da177e4 LT |
196 | return -ENODEV; |
197 | } | |
198 | ||
54549391 GKH |
199 | config_size = pci_mmcfg_config_num * sizeof(*pci_mmcfg_config); |
200 | pci_mmcfg_config = kmalloc(config_size, GFP_KERNEL); | |
201 | if (!pci_mmcfg_config) { | |
202 | printk(KERN_WARNING PREFIX | |
203 | "No memory for MCFG config tables\n"); | |
204 | return -ENOMEM; | |
205 | } | |
206 | ||
207 | memcpy(pci_mmcfg_config, &mcfg->config, config_size); | |
208 | for (i = 0; i < pci_mmcfg_config_num; ++i) { | |
209 | if (mcfg->config[i].base_reserved) { | |
210 | printk(KERN_ERR PREFIX | |
211 | "MMCONFIG not in low 4GB of memory\n"); | |
acc7c2e0 KR |
212 | kfree(pci_mmcfg_config); |
213 | pci_mmcfg_config_num = 0; | |
54549391 GKH |
214 | return -ENODEV; |
215 | } | |
216 | } | |
1da177e4 LT |
217 | |
218 | return 0; | |
219 | } | |
4be44fcd | 220 | #endif /* CONFIG_PCI_MMCONFIG */ |
1da177e4 LT |
221 | |
222 | #ifdef CONFIG_X86_LOCAL_APIC | |
4be44fcd | 223 | static int __init acpi_parse_madt(unsigned long phys_addr, unsigned long size) |
1da177e4 | 224 | { |
4be44fcd | 225 | struct acpi_table_madt *madt = NULL; |
1da177e4 | 226 | |
9cfda2c9 | 227 | if (!phys_addr || !size || !cpu_has_apic) |
1da177e4 LT |
228 | return -EINVAL; |
229 | ||
4be44fcd | 230 | madt = (struct acpi_table_madt *)__acpi_map_table(phys_addr, size); |
1da177e4 LT |
231 | if (!madt) { |
232 | printk(KERN_WARNING PREFIX "Unable to map MADT\n"); | |
233 | return -ENODEV; | |
234 | } | |
235 | ||
236 | if (madt->lapic_address) { | |
237 | acpi_lapic_addr = (u64) madt->lapic_address; | |
238 | ||
239 | printk(KERN_DEBUG PREFIX "Local APIC address 0x%08x\n", | |
4be44fcd | 240 | madt->lapic_address); |
1da177e4 LT |
241 | } |
242 | ||
243 | acpi_madt_oem_check(madt->header.oem_id, madt->header.oem_table_id); | |
4be44fcd | 244 | |
1da177e4 LT |
245 | return 0; |
246 | } | |
247 | ||
1da177e4 | 248 | static int __init |
4be44fcd | 249 | acpi_parse_lapic(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 | 250 | { |
4be44fcd | 251 | struct acpi_table_lapic *processor = NULL; |
1da177e4 | 252 | |
4be44fcd | 253 | processor = (struct acpi_table_lapic *)header; |
1da177e4 LT |
254 | |
255 | if (BAD_MADT_ENTRY(processor, end)) | |
256 | return -EINVAL; | |
257 | ||
258 | acpi_table_print_madt_entry(header); | |
259 | ||
7f66ae48 AR |
260 | /* Record local apic id only when enabled */ |
261 | if (processor->flags.enabled) | |
262 | x86_acpiid_to_apicid[processor->acpi_id] = processor->id; | |
1da177e4 | 263 | |
7f66ae48 AR |
264 | /* |
265 | * We need to register disabled CPU as well to permit | |
266 | * counting disabled CPUs. This allows us to size | |
267 | * cpus_possible_map more accurately, to permit | |
268 | * to not preallocating memory for all NR_CPUS | |
269 | * when we use CPU hotplug. | |
270 | */ | |
4be44fcd LB |
271 | mp_register_lapic(processor->id, /* APIC ID */ |
272 | processor->flags.enabled); /* Enabled? */ | |
1da177e4 LT |
273 | |
274 | return 0; | |
275 | } | |
276 | ||
277 | static int __init | |
4be44fcd LB |
278 | acpi_parse_lapic_addr_ovr(acpi_table_entry_header * header, |
279 | const unsigned long end) | |
1da177e4 LT |
280 | { |
281 | struct acpi_table_lapic_addr_ovr *lapic_addr_ovr = NULL; | |
282 | ||
4be44fcd | 283 | lapic_addr_ovr = (struct acpi_table_lapic_addr_ovr *)header; |
1da177e4 LT |
284 | |
285 | if (BAD_MADT_ENTRY(lapic_addr_ovr, end)) | |
286 | return -EINVAL; | |
287 | ||
288 | acpi_lapic_addr = lapic_addr_ovr->address; | |
289 | ||
290 | return 0; | |
291 | } | |
292 | ||
293 | static int __init | |
4be44fcd | 294 | acpi_parse_lapic_nmi(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
295 | { |
296 | struct acpi_table_lapic_nmi *lapic_nmi = NULL; | |
297 | ||
4be44fcd | 298 | lapic_nmi = (struct acpi_table_lapic_nmi *)header; |
1da177e4 LT |
299 | |
300 | if (BAD_MADT_ENTRY(lapic_nmi, end)) | |
301 | return -EINVAL; | |
302 | ||
303 | acpi_table_print_madt_entry(header); | |
304 | ||
305 | if (lapic_nmi->lint != 1) | |
306 | printk(KERN_WARNING PREFIX "NMI not connected to LINT 1!\n"); | |
307 | ||
308 | return 0; | |
309 | } | |
310 | ||
4be44fcd | 311 | #endif /*CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 312 | |
8466361a | 313 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
314 | |
315 | static int __init | |
4be44fcd | 316 | acpi_parse_ioapic(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
317 | { |
318 | struct acpi_table_ioapic *ioapic = NULL; | |
319 | ||
4be44fcd | 320 | ioapic = (struct acpi_table_ioapic *)header; |
1da177e4 LT |
321 | |
322 | if (BAD_MADT_ENTRY(ioapic, end)) | |
323 | return -EINVAL; | |
4be44fcd | 324 | |
1da177e4 LT |
325 | acpi_table_print_madt_entry(header); |
326 | ||
4be44fcd LB |
327 | mp_register_ioapic(ioapic->id, |
328 | ioapic->address, ioapic->global_irq_base); | |
329 | ||
1da177e4 LT |
330 | return 0; |
331 | } | |
332 | ||
333 | /* | |
334 | * Parse Interrupt Source Override for the ACPI SCI | |
335 | */ | |
e82c354b | 336 | static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) |
1da177e4 LT |
337 | { |
338 | if (trigger == 0) /* compatible SCI trigger is level */ | |
339 | trigger = 3; | |
340 | ||
341 | if (polarity == 0) /* compatible SCI polarity is low */ | |
342 | polarity = 3; | |
343 | ||
344 | /* Command-line over-ride via acpi_sci= */ | |
345 | if (acpi_sci_flags.trigger) | |
346 | trigger = acpi_sci_flags.trigger; | |
347 | ||
348 | if (acpi_sci_flags.polarity) | |
349 | polarity = acpi_sci_flags.polarity; | |
350 | ||
351 | /* | |
4be44fcd | 352 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
353 | * If GSI is < 16, this will update its flags, |
354 | * else it will create a new mp_irqs[] entry. | |
355 | */ | |
7bdd21ce | 356 | mp_override_legacy_irq(gsi, polarity, trigger, gsi); |
1da177e4 LT |
357 | |
358 | /* | |
359 | * stash over-ride to indicate we've been here | |
360 | * and for later update of acpi_fadt | |
361 | */ | |
7bdd21ce | 362 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
363 | return; |
364 | } | |
365 | ||
366 | static int __init | |
4be44fcd LB |
367 | acpi_parse_int_src_ovr(acpi_table_entry_header * header, |
368 | const unsigned long end) | |
1da177e4 LT |
369 | { |
370 | struct acpi_table_int_src_ovr *intsrc = NULL; | |
371 | ||
4be44fcd | 372 | intsrc = (struct acpi_table_int_src_ovr *)header; |
1da177e4 LT |
373 | |
374 | if (BAD_MADT_ENTRY(intsrc, end)) | |
375 | return -EINVAL; | |
376 | ||
377 | acpi_table_print_madt_entry(header); | |
378 | ||
379 | if (intsrc->bus_irq == acpi_fadt.sci_int) { | |
7bdd21ce | 380 | acpi_sci_ioapic_setup(intsrc->global_irq, |
4be44fcd LB |
381 | intsrc->flags.polarity, |
382 | intsrc->flags.trigger); | |
1da177e4 LT |
383 | return 0; |
384 | } | |
385 | ||
386 | if (acpi_skip_timer_override && | |
4be44fcd LB |
387 | intsrc->bus_irq == 0 && intsrc->global_irq == 2) { |
388 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); | |
389 | return 0; | |
1da177e4 LT |
390 | } |
391 | ||
4be44fcd LB |
392 | mp_override_legacy_irq(intsrc->bus_irq, |
393 | intsrc->flags.polarity, | |
394 | intsrc->flags.trigger, intsrc->global_irq); | |
1da177e4 LT |
395 | |
396 | return 0; | |
397 | } | |
398 | ||
1da177e4 | 399 | static int __init |
4be44fcd | 400 | acpi_parse_nmi_src(acpi_table_entry_header * header, const unsigned long end) |
1da177e4 LT |
401 | { |
402 | struct acpi_table_nmi_src *nmi_src = NULL; | |
403 | ||
4be44fcd | 404 | nmi_src = (struct acpi_table_nmi_src *)header; |
1da177e4 LT |
405 | |
406 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
407 | return -EINVAL; | |
408 | ||
409 | acpi_table_print_madt_entry(header); | |
410 | ||
411 | /* TBD: Support nimsrc entries? */ | |
412 | ||
413 | return 0; | |
414 | } | |
415 | ||
4be44fcd | 416 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 417 | |
1da177e4 LT |
418 | /* |
419 | * acpi_pic_sci_set_trigger() | |
420 | * | |
421 | * use ELCR to set PIC-mode trigger type for SCI | |
422 | * | |
423 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
424 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
425 | * | |
426 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
427 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
428 | * ECLR1 is IRQ's 0-7 (IRQ 0, 1, 2 must be 0) | |
429 | * ECLR2 is IRQ's 8-15 (IRQ 8, 13 must be 0) | |
430 | */ | |
431 | ||
4be44fcd | 432 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
433 | { |
434 | unsigned int mask = 1 << irq; | |
435 | unsigned int old, new; | |
436 | ||
437 | /* Real old ELCR mask */ | |
438 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
439 | ||
440 | /* | |
441 | * If we use ACPI to set PCI irq's, then we should clear ELCR | |
442 | * since we will set it correctly as we enable the PCI irq | |
443 | * routing. | |
444 | */ | |
445 | new = acpi_noirq ? old : 0; | |
446 | ||
447 | /* | |
448 | * Update SCI information in the ELCR, it isn't in the PCI | |
449 | * routing tables.. | |
450 | */ | |
451 | switch (trigger) { | |
4be44fcd | 452 | case 1: /* Edge - clear */ |
1da177e4 LT |
453 | new &= ~mask; |
454 | break; | |
4be44fcd | 455 | case 3: /* Level - set */ |
1da177e4 LT |
456 | new |= mask; |
457 | break; | |
458 | } | |
459 | ||
460 | if (old == new) | |
461 | return; | |
462 | ||
463 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
464 | outb(new, 0x4d0); | |
465 | outb(new >> 8, 0x4d1); | |
466 | } | |
467 | ||
1da177e4 LT |
468 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
469 | { | |
f023d764 | 470 | *irq = gsi; |
1da177e4 LT |
471 | return 0; |
472 | } | |
473 | ||
1f3a6a15 KK |
474 | /* |
475 | * success: return IRQ number (>=0) | |
476 | * failure: return < 0 | |
477 | */ | |
cb654695 | 478 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 LT |
479 | { |
480 | unsigned int irq; | |
481 | unsigned int plat_gsi = gsi; | |
482 | ||
483 | #ifdef CONFIG_PCI | |
484 | /* | |
485 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
486 | */ | |
487 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { | |
488 | extern void eisa_set_level_irq(unsigned int irq); | |
489 | ||
cb654695 | 490 | if (triggering == ACPI_LEVEL_SENSITIVE) |
4be44fcd | 491 | eisa_set_level_irq(gsi); |
1da177e4 LT |
492 | } |
493 | #endif | |
494 | ||
495 | #ifdef CONFIG_X86_IO_APIC | |
496 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { | |
cb654695 | 497 | plat_gsi = mp_register_gsi(gsi, triggering, polarity); |
1da177e4 LT |
498 | } |
499 | #endif | |
500 | acpi_gsi_to_irq(plat_gsi, &irq); | |
501 | return irq; | |
502 | } | |
4be44fcd | 503 | |
1da177e4 LT |
504 | EXPORT_SYMBOL(acpi_register_gsi); |
505 | ||
506 | /* | |
507 | * ACPI based hotplug support for CPU | |
508 | */ | |
509 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
4be44fcd | 510 | int acpi_map_lsapic(acpi_handle handle, int *pcpu) |
1da177e4 | 511 | { |
73fea175 AR |
512 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
513 | union acpi_object *obj; | |
514 | struct acpi_table_lapic *lapic; | |
515 | cpumask_t tmp_map, new_map; | |
516 | u8 physid; | |
517 | int cpu; | |
518 | ||
519 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
520 | return -EINVAL; | |
521 | ||
522 | if (!buffer.length || !buffer.pointer) | |
523 | return -EINVAL; | |
524 | ||
525 | obj = buffer.pointer; | |
526 | if (obj->type != ACPI_TYPE_BUFFER || | |
527 | obj->buffer.length < sizeof(*lapic)) { | |
528 | kfree(buffer.pointer); | |
529 | return -EINVAL; | |
530 | } | |
531 | ||
532 | lapic = (struct acpi_table_lapic *)obj->buffer.pointer; | |
533 | ||
534 | if ((lapic->header.type != ACPI_MADT_LAPIC) || | |
535 | (!lapic->flags.enabled)) { | |
536 | kfree(buffer.pointer); | |
537 | return -EINVAL; | |
538 | } | |
539 | ||
540 | physid = lapic->id; | |
541 | ||
542 | kfree(buffer.pointer); | |
543 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
544 | buffer.pointer = NULL; | |
545 | ||
546 | tmp_map = cpu_present_map; | |
547 | mp_register_lapic(physid, lapic->flags.enabled); | |
548 | ||
549 | /* | |
550 | * If mp_register_lapic successfully generates a new logical cpu | |
551 | * number, then the following will get us exactly what was mapped | |
552 | */ | |
553 | cpus_andnot(new_map, cpu_present_map, tmp_map); | |
554 | if (cpus_empty(new_map)) { | |
555 | printk ("Unable to map lapic to logical cpu number\n"); | |
556 | return -EINVAL; | |
557 | } | |
558 | ||
559 | cpu = first_cpu(new_map); | |
560 | ||
561 | *pcpu = cpu; | |
562 | return 0; | |
1da177e4 | 563 | } |
1da177e4 | 564 | |
4be44fcd | 565 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 566 | |
4be44fcd | 567 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 568 | { |
73fea175 AR |
569 | int i; |
570 | ||
571 | for_each_possible_cpu(i) { | |
572 | if (x86_acpiid_to_apicid[i] == x86_cpu_to_apicid[cpu]) { | |
573 | x86_acpiid_to_apicid[i] = -1; | |
574 | break; | |
575 | } | |
576 | } | |
577 | x86_cpu_to_apicid[cpu] = -1; | |
578 | cpu_clear(cpu, cpu_present_map); | |
579 | num_processors--; | |
580 | ||
581 | return (0); | |
1da177e4 | 582 | } |
4be44fcd | 583 | |
1da177e4 | 584 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 585 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 586 | |
4be44fcd | 587 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
588 | { |
589 | /* TBD */ | |
590 | return -EINVAL; | |
591 | } | |
4be44fcd | 592 | |
b1bb248a KK |
593 | EXPORT_SYMBOL(acpi_register_ioapic); |
594 | ||
4be44fcd | 595 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
596 | { |
597 | /* TBD */ | |
598 | return -EINVAL; | |
599 | } | |
4be44fcd | 600 | |
b1bb248a KK |
601 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
602 | ||
1da177e4 | 603 | static unsigned long __init |
4be44fcd | 604 | acpi_scan_rsdp(unsigned long start, unsigned long length) |
1da177e4 | 605 | { |
4be44fcd LB |
606 | unsigned long offset = 0; |
607 | unsigned long sig_len = sizeof("RSD PTR ") - 1; | |
1da177e4 LT |
608 | |
609 | /* | |
610 | * Scan all 16-byte boundaries of the physical memory region for the | |
611 | * RSDP signature. | |
612 | */ | |
613 | for (offset = 0; offset < length; offset += 16) { | |
f6c2e333 | 614 | if (strncmp((char *)(phys_to_virt(start) + offset), "RSD PTR ", sig_len)) |
1da177e4 LT |
615 | continue; |
616 | return (start + offset); | |
617 | } | |
618 | ||
619 | return 0; | |
620 | } | |
621 | ||
622 | static int __init acpi_parse_sbf(unsigned long phys_addr, unsigned long size) | |
623 | { | |
624 | struct acpi_table_sbf *sb; | |
625 | ||
626 | if (!phys_addr || !size) | |
4be44fcd | 627 | return -EINVAL; |
1da177e4 | 628 | |
4be44fcd | 629 | sb = (struct acpi_table_sbf *)__acpi_map_table(phys_addr, size); |
1da177e4 LT |
630 | if (!sb) { |
631 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
632 | return -ENODEV; | |
633 | } | |
634 | ||
4be44fcd | 635 | sbf_port = sb->sbf_cmos; /* Save CMOS port */ |
1da177e4 LT |
636 | |
637 | return 0; | |
638 | } | |
639 | ||
1da177e4 LT |
640 | #ifdef CONFIG_HPET_TIMER |
641 | ||
642 | static int __init acpi_parse_hpet(unsigned long phys, unsigned long size) | |
643 | { | |
644 | struct acpi_table_hpet *hpet_tbl; | |
f0f4c343 | 645 | struct resource *hpet_res; |
646 | resource_size_t res_start; | |
1da177e4 LT |
647 | |
648 | if (!phys || !size) | |
649 | return -EINVAL; | |
650 | ||
4be44fcd | 651 | hpet_tbl = (struct acpi_table_hpet *)__acpi_map_table(phys, size); |
1da177e4 LT |
652 | if (!hpet_tbl) { |
653 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
654 | return -ENODEV; | |
655 | } | |
656 | ||
657 | if (hpet_tbl->addr.space_id != ACPI_SPACE_MEM) { | |
658 | printk(KERN_WARNING PREFIX "HPET timers must be located in " | |
659 | "memory.\n"); | |
660 | return -1; | |
661 | } | |
f0f4c343 | 662 | |
663 | #define HPET_RESOURCE_NAME_SIZE 9 | |
664 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
665 | if (hpet_res) { | |
666 | memset(hpet_res, 0, sizeof(*hpet_res)); | |
667 | hpet_res->name = (void *)&hpet_res[1]; | |
668 | hpet_res->flags = IORESOURCE_MEM | IORESOURCE_BUSY; | |
669 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, | |
670 | "HPET %u", hpet_tbl->number); | |
671 | hpet_res->end = (1 * 1024) - 1; | |
672 | } | |
673 | ||
1da177e4 | 674 | #ifdef CONFIG_X86_64 |
4be44fcd LB |
675 | vxtime.hpet_address = hpet_tbl->addr.addrl | |
676 | ((long)hpet_tbl->addr.addrh << 32); | |
1da177e4 | 677 | |
4be44fcd LB |
678 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
679 | hpet_tbl->id, vxtime.hpet_address); | |
f0f4c343 | 680 | |
681 | res_start = vxtime.hpet_address; | |
4be44fcd | 682 | #else /* X86 */ |
1da177e4 LT |
683 | { |
684 | extern unsigned long hpet_address; | |
685 | ||
686 | hpet_address = hpet_tbl->addr.addrl; | |
687 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", | |
4be44fcd | 688 | hpet_tbl->id, hpet_address); |
f0f4c343 | 689 | |
690 | res_start = hpet_address; | |
1da177e4 | 691 | } |
4be44fcd | 692 | #endif /* X86 */ |
1da177e4 | 693 | |
f0f4c343 | 694 | if (hpet_res) { |
695 | hpet_res->start = res_start; | |
696 | hpet_res->end += res_start; | |
697 | insert_resource(&iomem_resource, hpet_res); | |
698 | } | |
699 | ||
1da177e4 LT |
700 | return 0; |
701 | } | |
702 | #else | |
703 | #define acpi_parse_hpet NULL | |
704 | #endif | |
705 | ||
706 | #ifdef CONFIG_X86_PM_TIMER | |
707 | extern u32 pmtmr_ioport; | |
708 | #endif | |
709 | ||
710 | static int __init acpi_parse_fadt(unsigned long phys, unsigned long size) | |
711 | { | |
793c2388 | 712 | struct fadt_descriptor *fadt = NULL; |
1da177e4 | 713 | |
793c2388 | 714 | fadt = (struct fadt_descriptor *)__acpi_map_table(phys, size); |
4be44fcd | 715 | if (!fadt) { |
1da177e4 LT |
716 | printk(KERN_WARNING PREFIX "Unable to map FADT\n"); |
717 | return 0; | |
718 | } | |
90660ec3 | 719 | |
1da177e4 LT |
720 | #ifdef CONFIG_X86_PM_TIMER |
721 | /* detect the location of the ACPI PM Timer */ | |
ad71860a | 722 | if (fadt->header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 723 | /* FADT rev. 2 */ |
ad71860a | 724 | if (fadt->xpm_timer_block.space_id != |
4be44fcd | 725 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
726 | return 0; |
727 | ||
ad71860a | 728 | pmtmr_ioport = fadt->xpm_timer_block.address; |
e6e87b4b DSL |
729 | /* |
730 | * "X" fields are optional extensions to the original V1.0 | |
731 | * fields, so we must selectively expand V1.0 fields if the | |
732 | * corresponding X field is zero. | |
733 | */ | |
734 | if (!pmtmr_ioport) | |
ad71860a | 735 | pmtmr_ioport = fadt->pm_timer_block; |
1da177e4 LT |
736 | } else { |
737 | /* FADT rev. 1 */ | |
ad71860a | 738 | pmtmr_ioport = fadt->pm_timer_block; |
1da177e4 LT |
739 | } |
740 | if (pmtmr_ioport) | |
4be44fcd LB |
741 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
742 | pmtmr_ioport); | |
1da177e4 LT |
743 | #endif |
744 | return 0; | |
745 | } | |
746 | ||
4be44fcd | 747 | unsigned long __init acpi_find_rsdp(void) |
1da177e4 | 748 | { |
4be44fcd | 749 | unsigned long rsdp_phys = 0; |
1da177e4 LT |
750 | |
751 | if (efi_enabled) { | |
b2c99e3c BH |
752 | if (efi.acpi20 != EFI_INVALID_TABLE_ADDR) |
753 | return efi.acpi20; | |
754 | else if (efi.acpi != EFI_INVALID_TABLE_ADDR) | |
755 | return efi.acpi; | |
1da177e4 LT |
756 | } |
757 | /* | |
758 | * Scan memory looking for the RSDP signature. First search EBDA (low | |
759 | * memory) paragraphs and then search upper memory (E0000-FFFFF). | |
760 | */ | |
4be44fcd | 761 | rsdp_phys = acpi_scan_rsdp(0, 0x400); |
1da177e4 | 762 | if (!rsdp_phys) |
4be44fcd | 763 | rsdp_phys = acpi_scan_rsdp(0xE0000, 0x20000); |
1da177e4 LT |
764 | |
765 | return rsdp_phys; | |
766 | } | |
767 | ||
768 | #ifdef CONFIG_X86_LOCAL_APIC | |
769 | /* | |
770 | * Parse LAPIC entries in MADT | |
771 | * returns 0 on success, < 0 on error | |
772 | */ | |
4be44fcd | 773 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
774 | { |
775 | int count; | |
776 | ||
0fcd2709 AK |
777 | if (!cpu_has_apic) |
778 | return -ENODEV; | |
779 | ||
1da177e4 LT |
780 | /* |
781 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
782 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
783 | */ | |
784 | ||
4be44fcd LB |
785 | count = |
786 | acpi_table_parse_madt(ACPI_MADT_LAPIC_ADDR_OVR, | |
787 | acpi_parse_lapic_addr_ovr, 0); | |
1da177e4 | 788 | if (count < 0) { |
4be44fcd LB |
789 | printk(KERN_ERR PREFIX |
790 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
791 | return count; |
792 | } | |
793 | ||
794 | mp_register_lapic_address(acpi_lapic_addr); | |
795 | ||
796 | count = acpi_table_parse_madt(ACPI_MADT_LAPIC, acpi_parse_lapic, | |
4be44fcd LB |
797 | MAX_APICS); |
798 | if (!count) { | |
1da177e4 LT |
799 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
800 | /* TBD: Cleanup to allow fallback to MPS */ | |
801 | return -ENODEV; | |
4be44fcd | 802 | } else if (count < 0) { |
1da177e4 LT |
803 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
804 | /* TBD: Cleanup to allow fallback to MPS */ | |
805 | return count; | |
806 | } | |
807 | ||
4be44fcd LB |
808 | count = |
809 | acpi_table_parse_madt(ACPI_MADT_LAPIC_NMI, acpi_parse_lapic_nmi, 0); | |
1da177e4 LT |
810 | if (count < 0) { |
811 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); | |
812 | /* TBD: Cleanup to allow fallback to MPS */ | |
813 | return count; | |
814 | } | |
815 | return 0; | |
816 | } | |
4be44fcd | 817 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 818 | |
8466361a | 819 | #ifdef CONFIG_X86_IO_APIC |
1da177e4 LT |
820 | /* |
821 | * Parse IOAPIC related entries in MADT | |
822 | * returns 0 on success, < 0 on error | |
823 | */ | |
4be44fcd | 824 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
825 | { |
826 | int count; | |
827 | ||
828 | /* | |
829 | * ACPI interpreter is required to complete interrupt setup, | |
830 | * so if it is off, don't enumerate the io-apics with ACPI. | |
831 | * If MPS is present, it will handle them, | |
832 | * otherwise the system will stay in PIC mode | |
833 | */ | |
834 | if (acpi_disabled || acpi_noirq) { | |
835 | return -ENODEV; | |
4be44fcd | 836 | } |
1da177e4 | 837 | |
9cfda2c9 | 838 | if (!cpu_has_apic) |
d3b6a349 AK |
839 | return -ENODEV; |
840 | ||
1da177e4 | 841 | /* |
4be44fcd | 842 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
843 | */ |
844 | if (skip_ioapic_setup) { | |
845 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 846 | "due to 'noapic' option.\n"); |
1da177e4 LT |
847 | return -ENODEV; |
848 | } | |
849 | ||
4be44fcd LB |
850 | count = |
851 | acpi_table_parse_madt(ACPI_MADT_IOAPIC, acpi_parse_ioapic, | |
852 | MAX_IO_APICS); | |
1da177e4 LT |
853 | if (!count) { |
854 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
855 | return -ENODEV; | |
4be44fcd | 856 | } else if (count < 0) { |
1da177e4 LT |
857 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
858 | return count; | |
859 | } | |
860 | ||
4be44fcd LB |
861 | count = |
862 | acpi_table_parse_madt(ACPI_MADT_INT_SRC_OVR, acpi_parse_int_src_ovr, | |
863 | NR_IRQ_VECTORS); | |
1da177e4 | 864 | if (count < 0) { |
4be44fcd LB |
865 | printk(KERN_ERR PREFIX |
866 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
867 | /* TBD: Cleanup to allow fallback to MPS */ |
868 | return count; | |
869 | } | |
870 | ||
871 | /* | |
872 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
873 | * pretend we got one so we can set the SCI flags. | |
874 | */ | |
875 | if (!acpi_sci_override_gsi) | |
7bdd21ce | 876 | acpi_sci_ioapic_setup(acpi_fadt.sci_int, 0, 0); |
1da177e4 LT |
877 | |
878 | /* Fill in identity legacy mapings where no override */ | |
879 | mp_config_acpi_legacy_irqs(); | |
880 | ||
4be44fcd LB |
881 | count = |
882 | acpi_table_parse_madt(ACPI_MADT_NMI_SRC, acpi_parse_nmi_src, | |
883 | NR_IRQ_VECTORS); | |
1da177e4 LT |
884 | if (count < 0) { |
885 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
886 | /* TBD: Cleanup to allow fallback to MPS */ | |
887 | return count; | |
888 | } | |
889 | ||
890 | return 0; | |
891 | } | |
892 | #else | |
893 | static inline int acpi_parse_madt_ioapic_entries(void) | |
894 | { | |
895 | return -1; | |
896 | } | |
8466361a | 897 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 898 | |
4be44fcd | 899 | static void __init acpi_process_madt(void) |
1da177e4 LT |
900 | { |
901 | #ifdef CONFIG_X86_LOCAL_APIC | |
902 | int count, error; | |
903 | ||
904 | count = acpi_table_parse(ACPI_APIC, acpi_parse_madt); | |
905 | if (count >= 1) { | |
906 | ||
907 | /* | |
908 | * Parse MADT LAPIC entries | |
909 | */ | |
910 | error = acpi_parse_madt_lapic_entries(); | |
911 | if (!error) { | |
912 | acpi_lapic = 1; | |
913 | ||
911a62d4 VP |
914 | #ifdef CONFIG_X86_GENERICARCH |
915 | generic_bigsmp_probe(); | |
916 | #endif | |
1da177e4 LT |
917 | /* |
918 | * Parse MADT IO-APIC entries | |
919 | */ | |
920 | error = acpi_parse_madt_ioapic_entries(); | |
921 | if (!error) { | |
922 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
923 | acpi_irq_balance_set(NULL); | |
924 | acpi_ioapic = 1; | |
925 | ||
926 | smp_found_config = 1; | |
927 | clustered_apic_check(); | |
928 | } | |
929 | } | |
930 | if (error == -EINVAL) { | |
931 | /* | |
932 | * Dell Precision Workstation 410, 610 come here. | |
933 | */ | |
4be44fcd LB |
934 | printk(KERN_ERR PREFIX |
935 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
936 | disable_acpi(); |
937 | } | |
938 | } | |
939 | #endif | |
940 | return; | |
941 | } | |
942 | ||
aea00143 AP |
943 | #ifdef __i386__ |
944 | ||
aea00143 AP |
945 | static int __init disable_acpi_irq(struct dmi_system_id *d) |
946 | { | |
947 | if (!acpi_force) { | |
948 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
949 | d->ident); | |
950 | acpi_noirq_set(); | |
951 | } | |
952 | return 0; | |
953 | } | |
954 | ||
955 | static int __init disable_acpi_pci(struct dmi_system_id *d) | |
956 | { | |
957 | if (!acpi_force) { | |
958 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
959 | d->ident); | |
960 | acpi_disable_pci(); | |
961 | } | |
962 | return 0; | |
963 | } | |
aea00143 AP |
964 | |
965 | static int __init dmi_disable_acpi(struct dmi_system_id *d) | |
966 | { | |
967 | if (!acpi_force) { | |
4be44fcd | 968 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
969 | disable_acpi(); |
970 | } else { | |
971 | printk(KERN_NOTICE | |
972 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
973 | } | |
974 | return 0; | |
975 | } | |
976 | ||
977 | /* | |
978 | * Limit ACPI to CPU enumeration for HT | |
979 | */ | |
980 | static int __init force_acpi_ht(struct dmi_system_id *d) | |
981 | { | |
982 | if (!acpi_force) { | |
4be44fcd LB |
983 | printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", |
984 | d->ident); | |
aea00143 AP |
985 | disable_acpi(); |
986 | acpi_ht = 1; | |
987 | } else { | |
988 | printk(KERN_NOTICE | |
989 | "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); | |
990 | } | |
991 | return 0; | |
992 | } | |
993 | ||
994 | /* | |
995 | * If your system is blacklisted here, but you find that acpi=force | |
996 | * works for you, please contact acpi-devel@sourceforge.net | |
997 | */ | |
998 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
999 | /* | |
1000 | * Boxes that need ACPI disabled | |
1001 | */ | |
1002 | { | |
4be44fcd LB |
1003 | .callback = dmi_disable_acpi, |
1004 | .ident = "IBM Thinkpad", | |
1005 | .matches = { | |
1006 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1007 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1008 | }, | |
1009 | }, | |
aea00143 AP |
1010 | |
1011 | /* | |
1012 | * Boxes that need acpi=ht | |
1013 | */ | |
1014 | { | |
4be44fcd LB |
1015 | .callback = force_acpi_ht, |
1016 | .ident = "FSC Primergy T850", | |
1017 | .matches = { | |
1018 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
1019 | DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), | |
1020 | }, | |
1021 | }, | |
aea00143 | 1022 | { |
4be44fcd LB |
1023 | .callback = force_acpi_ht, |
1024 | .ident = "DELL GX240", | |
1025 | .matches = { | |
1026 | DMI_MATCH(DMI_BOARD_VENDOR, "Dell Computer Corporation"), | |
1027 | DMI_MATCH(DMI_BOARD_NAME, "OptiPlex GX240"), | |
1028 | }, | |
1029 | }, | |
aea00143 | 1030 | { |
4be44fcd LB |
1031 | .callback = force_acpi_ht, |
1032 | .ident = "HP VISUALIZE NT Workstation", | |
1033 | .matches = { | |
1034 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
1035 | DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), | |
1036 | }, | |
1037 | }, | |
aea00143 | 1038 | { |
4be44fcd LB |
1039 | .callback = force_acpi_ht, |
1040 | .ident = "Compaq Workstation W8000", | |
1041 | .matches = { | |
1042 | DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), | |
1043 | DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), | |
1044 | }, | |
1045 | }, | |
aea00143 | 1046 | { |
4be44fcd LB |
1047 | .callback = force_acpi_ht, |
1048 | .ident = "ASUS P4B266", | |
1049 | .matches = { | |
1050 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1051 | DMI_MATCH(DMI_BOARD_NAME, "P4B266"), | |
1052 | }, | |
1053 | }, | |
aea00143 | 1054 | { |
4be44fcd LB |
1055 | .callback = force_acpi_ht, |
1056 | .ident = "ASUS P2B-DS", | |
1057 | .matches = { | |
1058 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1059 | DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), | |
1060 | }, | |
1061 | }, | |
aea00143 | 1062 | { |
4be44fcd LB |
1063 | .callback = force_acpi_ht, |
1064 | .ident = "ASUS CUR-DLS", | |
1065 | .matches = { | |
1066 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1067 | DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), | |
1068 | }, | |
1069 | }, | |
aea00143 | 1070 | { |
4be44fcd LB |
1071 | .callback = force_acpi_ht, |
1072 | .ident = "ABIT i440BX-W83977", | |
1073 | .matches = { | |
1074 | DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), | |
1075 | DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), | |
1076 | }, | |
1077 | }, | |
aea00143 | 1078 | { |
4be44fcd LB |
1079 | .callback = force_acpi_ht, |
1080 | .ident = "IBM Bladecenter", | |
1081 | .matches = { | |
1082 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1083 | DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), | |
1084 | }, | |
1085 | }, | |
aea00143 | 1086 | { |
4be44fcd LB |
1087 | .callback = force_acpi_ht, |
1088 | .ident = "IBM eServer xSeries 360", | |
1089 | .matches = { | |
1090 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1091 | DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), | |
1092 | }, | |
1093 | }, | |
aea00143 | 1094 | { |
4be44fcd LB |
1095 | .callback = force_acpi_ht, |
1096 | .ident = "IBM eserver xSeries 330", | |
1097 | .matches = { | |
1098 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1099 | DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), | |
1100 | }, | |
1101 | }, | |
aea00143 | 1102 | { |
4be44fcd LB |
1103 | .callback = force_acpi_ht, |
1104 | .ident = "IBM eserver xSeries 440", | |
1105 | .matches = { | |
1106 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1107 | DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), | |
1108 | }, | |
1109 | }, | |
aea00143 | 1110 | |
aea00143 AP |
1111 | /* |
1112 | * Boxes that need ACPI PCI IRQ routing disabled | |
1113 | */ | |
1114 | { | |
4be44fcd LB |
1115 | .callback = disable_acpi_irq, |
1116 | .ident = "ASUS A7V", | |
1117 | .matches = { | |
1118 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1119 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1120 | /* newer BIOS, Revision 1011, does work */ | |
1121 | DMI_MATCH(DMI_BIOS_VERSION, | |
1122 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1123 | }, | |
1124 | }, | |
aea00143 AP |
1125 | |
1126 | /* | |
1127 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1128 | */ | |
4be44fcd LB |
1129 | { /* _BBN 0 bug */ |
1130 | .callback = disable_acpi_pci, | |
1131 | .ident = "ASUS PR-DLS", | |
1132 | .matches = { | |
1133 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1134 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1135 | DMI_MATCH(DMI_BIOS_VERSION, | |
1136 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1137 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1138 | }, | |
1139 | }, | |
aea00143 | 1140 | { |
4be44fcd LB |
1141 | .callback = disable_acpi_pci, |
1142 | .ident = "Acer TravelMate 36x Laptop", | |
1143 | .matches = { | |
1144 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1145 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1146 | }, | |
1147 | }, | |
4be44fcd | 1148 | {} |
aea00143 AP |
1149 | }; |
1150 | ||
4be44fcd | 1151 | #endif /* __i386__ */ |
aea00143 | 1152 | |
1da177e4 LT |
1153 | /* |
1154 | * acpi_boot_table_init() and acpi_boot_init() | |
1155 | * called from setup_arch(), always. | |
1156 | * 1. checksums all tables | |
1157 | * 2. enumerates lapics | |
1158 | * 3. enumerates io-apics | |
1159 | * | |
1160 | * acpi_table_init() is separate to allow reading SRAT without | |
1161 | * other side effects. | |
1162 | * | |
1163 | * side effects of acpi_boot_init: | |
1164 | * acpi_lapic = 1 if LAPIC found | |
1165 | * acpi_ioapic = 1 if IOAPIC found | |
1166 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1167 | * if acpi_blacklisted() acpi_disabled = 1; | |
1168 | * acpi_irq_model=... | |
1169 | * ... | |
1170 | * | |
1171 | * return value: (currently ignored) | |
1172 | * 0: success | |
1173 | * !0: failure | |
1174 | */ | |
1175 | ||
4be44fcd | 1176 | int __init acpi_boot_table_init(void) |
1da177e4 LT |
1177 | { |
1178 | int error; | |
1179 | ||
aea00143 AP |
1180 | #ifdef __i386__ |
1181 | dmi_check_system(acpi_dmi_table); | |
1182 | #endif | |
1183 | ||
1da177e4 LT |
1184 | /* |
1185 | * If acpi_disabled, bail out | |
1186 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1187 | */ | |
1188 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1189 | return 1; |
1da177e4 LT |
1190 | |
1191 | /* | |
1192 | * Initialize the ACPI boot-time table parser. | |
1193 | */ | |
1194 | error = acpi_table_init(); | |
1195 | if (error) { | |
1196 | disable_acpi(); | |
1197 | return error; | |
1198 | } | |
1da177e4 LT |
1199 | |
1200 | acpi_table_parse(ACPI_BOOT, acpi_parse_sbf); | |
1201 | ||
1202 | /* | |
1203 | * blacklist may disable ACPI entirely | |
1204 | */ | |
1205 | error = acpi_blacklisted(); | |
1206 | if (error) { | |
1da177e4 LT |
1207 | if (acpi_force) { |
1208 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1209 | } else { | |
1210 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1211 | disable_acpi(); | |
1212 | return error; | |
1213 | } | |
1214 | } | |
1215 | ||
1216 | return 0; | |
1217 | } | |
1218 | ||
1da177e4 LT |
1219 | int __init acpi_boot_init(void) |
1220 | { | |
1221 | /* | |
1222 | * If acpi_disabled, bail out | |
1223 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1224 | */ | |
1225 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1226 | return 1; |
1da177e4 LT |
1227 | |
1228 | acpi_table_parse(ACPI_BOOT, acpi_parse_sbf); | |
1229 | ||
1230 | /* | |
1231 | * set sci_int and PM timer address | |
1232 | */ | |
1233 | acpi_table_parse(ACPI_FADT, acpi_parse_fadt); | |
1234 | ||
1235 | /* | |
1236 | * Process the Multiple APIC Description Table (MADT), if present | |
1237 | */ | |
1238 | acpi_process_madt(); | |
1239 | ||
1240 | acpi_table_parse(ACPI_HPET, acpi_parse_hpet); | |
1da177e4 LT |
1241 | |
1242 | return 0; | |
1243 | } | |
1a3f239d RR |
1244 | |
1245 | static int __init parse_acpi(char *arg) | |
1246 | { | |
1247 | if (!arg) | |
1248 | return -EINVAL; | |
1249 | ||
1250 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1251 | if (strcmp(arg, "off") == 0) { | |
1252 | disable_acpi(); | |
1253 | } | |
1254 | /* acpi=force to over-ride black-list */ | |
1255 | else if (strcmp(arg, "force") == 0) { | |
1256 | acpi_force = 1; | |
1257 | acpi_ht = 1; | |
1258 | acpi_disabled = 0; | |
1259 | } | |
1260 | /* acpi=strict disables out-of-spec workarounds */ | |
1261 | else if (strcmp(arg, "strict") == 0) { | |
1262 | acpi_strict = 1; | |
1263 | } | |
1264 | /* Limit ACPI just to boot-time to enable HT */ | |
1265 | else if (strcmp(arg, "ht") == 0) { | |
1266 | if (!acpi_force) | |
1267 | disable_acpi(); | |
1268 | acpi_ht = 1; | |
1269 | } | |
1270 | /* "acpi=noirq" disables ACPI interrupt routing */ | |
1271 | else if (strcmp(arg, "noirq") == 0) { | |
1272 | acpi_noirq_set(); | |
1273 | } else { | |
1274 | /* Core will printk when we return error. */ | |
1275 | return -EINVAL; | |
1276 | } | |
1277 | return 0; | |
1278 | } | |
1279 | early_param("acpi", parse_acpi); | |
1280 | ||
1281 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1282 | static int __init parse_pci(char *arg) | |
1283 | { | |
1284 | if (arg && strcmp(arg, "noacpi") == 0) | |
1285 | acpi_disable_pci(); | |
1286 | return 0; | |
1287 | } | |
1288 | early_param("pci", parse_pci); | |
1289 | ||
1290 | #ifdef CONFIG_X86_IO_APIC | |
1291 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1292 | { | |
1293 | acpi_skip_timer_override = 1; | |
1294 | return 0; | |
1295 | } | |
1296 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1297 | |
1298 | static int __init parse_acpi_use_timer_override(char *arg) | |
1299 | { | |
1300 | acpi_use_timer_override = 1; | |
1301 | return 0; | |
1302 | } | |
1303 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1304 | #endif /* CONFIG_X86_IO_APIC */ |
1305 | ||
1306 | static int __init setup_acpi_sci(char *s) | |
1307 | { | |
1308 | if (!s) | |
1309 | return -EINVAL; | |
1310 | if (!strcmp(s, "edge")) | |
1311 | acpi_sci_flags.trigger = 1; | |
1312 | else if (!strcmp(s, "level")) | |
1313 | acpi_sci_flags.trigger = 3; | |
1314 | else if (!strcmp(s, "high")) | |
1315 | acpi_sci_flags.polarity = 1; | |
1316 | else if (!strcmp(s, "low")) | |
1317 | acpi_sci_flags.polarity = 3; | |
1318 | else | |
1319 | return -EINVAL; | |
1320 | return 0; | |
1321 | } | |
1322 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1323 | |
1324 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1325 | { | |
1326 | unsigned int old, new, val; | |
1327 | do { | |
1328 | old = *lock; | |
1329 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1330 | val = cmpxchg(lock, old, new); | |
1331 | } while (unlikely (val != old)); | |
1332 | return (new < 3) ? -1 : 0; | |
1333 | } | |
1334 | ||
1335 | int __acpi_release_global_lock(unsigned int *lock) | |
1336 | { | |
1337 | unsigned int old, new, val; | |
1338 | do { | |
1339 | old = *lock; | |
1340 | new = old & ~0x3; | |
1341 | val = cmpxchg(lock, old, new); | |
1342 | } while (unlikely (val != old)); | |
1343 | return old & 0x1; | |
1344 | } |