]>
Commit | Line | Data |
---|---|---|
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 LT |
333 | |
334 | static int __init | |
5f3b1a8b | 335 | acpi_parse_ioapic(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 336 | { |
5f3b1a8b | 337 | struct acpi_madt_io_apic *ioapic = NULL; |
1da177e4 | 338 | |
5f3b1a8b | 339 | ioapic = (struct acpi_madt_io_apic *)header; |
1da177e4 LT |
340 | |
341 | if (BAD_MADT_ENTRY(ioapic, end)) | |
342 | return -EINVAL; | |
4be44fcd | 343 | |
1da177e4 LT |
344 | acpi_table_print_madt_entry(header); |
345 | ||
4be44fcd LB |
346 | mp_register_ioapic(ioapic->id, |
347 | ioapic->address, ioapic->global_irq_base); | |
348 | ||
1da177e4 LT |
349 | return 0; |
350 | } | |
351 | ||
352 | /* | |
353 | * Parse Interrupt Source Override for the ACPI SCI | |
354 | */ | |
e82c354b | 355 | static void __init acpi_sci_ioapic_setup(u32 gsi, u16 polarity, u16 trigger) |
1da177e4 LT |
356 | { |
357 | if (trigger == 0) /* compatible SCI trigger is level */ | |
358 | trigger = 3; | |
359 | ||
360 | if (polarity == 0) /* compatible SCI polarity is low */ | |
361 | polarity = 3; | |
362 | ||
363 | /* Command-line over-ride via acpi_sci= */ | |
5f3b1a8b AS |
364 | if (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) |
365 | trigger = (acpi_sci_flags & ACPI_MADT_TRIGGER_MASK) >> 2; | |
1da177e4 | 366 | |
5f3b1a8b AS |
367 | if (acpi_sci_flags & ACPI_MADT_POLARITY_MASK) |
368 | polarity = acpi_sci_flags & ACPI_MADT_POLARITY_MASK; | |
1da177e4 LT |
369 | |
370 | /* | |
4be44fcd | 371 | * mp_config_acpi_legacy_irqs() already setup IRQs < 16 |
1da177e4 LT |
372 | * If GSI is < 16, this will update its flags, |
373 | * else it will create a new mp_irqs[] entry. | |
374 | */ | |
7bdd21ce | 375 | mp_override_legacy_irq(gsi, polarity, trigger, gsi); |
1da177e4 LT |
376 | |
377 | /* | |
378 | * stash over-ride to indicate we've been here | |
cee324b1 | 379 | * and for later update of acpi_gbl_FADT |
1da177e4 | 380 | */ |
7bdd21ce | 381 | acpi_sci_override_gsi = gsi; |
1da177e4 LT |
382 | return; |
383 | } | |
384 | ||
385 | static int __init | |
5f3b1a8b | 386 | acpi_parse_int_src_ovr(struct acpi_subtable_header * header, |
4be44fcd | 387 | const unsigned long end) |
1da177e4 | 388 | { |
5f3b1a8b | 389 | struct acpi_madt_interrupt_override *intsrc = NULL; |
1da177e4 | 390 | |
5f3b1a8b | 391 | intsrc = (struct acpi_madt_interrupt_override *)header; |
1da177e4 LT |
392 | |
393 | if (BAD_MADT_ENTRY(intsrc, end)) | |
394 | return -EINVAL; | |
395 | ||
396 | acpi_table_print_madt_entry(header); | |
397 | ||
5f3b1a8b | 398 | if (intsrc->source_irq == acpi_gbl_FADT.sci_interrupt) { |
7bdd21ce | 399 | acpi_sci_ioapic_setup(intsrc->global_irq, |
5f3b1a8b AS |
400 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, |
401 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2); | |
1da177e4 LT |
402 | return 0; |
403 | } | |
404 | ||
405 | if (acpi_skip_timer_override && | |
5f3b1a8b | 406 | intsrc->source_irq == 0 && intsrc->global_irq == 2) { |
4be44fcd LB |
407 | printk(PREFIX "BIOS IRQ0 pin2 override ignored.\n"); |
408 | return 0; | |
1da177e4 LT |
409 | } |
410 | ||
5f3b1a8b AS |
411 | mp_override_legacy_irq(intsrc->source_irq, |
412 | intsrc->inti_flags & ACPI_MADT_POLARITY_MASK, | |
413 | (intsrc->inti_flags & ACPI_MADT_TRIGGER_MASK) >> 2, | |
414 | intsrc->global_irq); | |
1da177e4 LT |
415 | |
416 | return 0; | |
417 | } | |
418 | ||
1da177e4 | 419 | static int __init |
5f3b1a8b | 420 | acpi_parse_nmi_src(struct acpi_subtable_header * header, const unsigned long end) |
1da177e4 | 421 | { |
5f3b1a8b | 422 | struct acpi_madt_nmi_source *nmi_src = NULL; |
1da177e4 | 423 | |
5f3b1a8b | 424 | nmi_src = (struct acpi_madt_nmi_source *)header; |
1da177e4 LT |
425 | |
426 | if (BAD_MADT_ENTRY(nmi_src, end)) | |
427 | return -EINVAL; | |
428 | ||
429 | acpi_table_print_madt_entry(header); | |
430 | ||
431 | /* TBD: Support nimsrc entries? */ | |
432 | ||
433 | return 0; | |
434 | } | |
435 | ||
4be44fcd | 436 | #endif /* CONFIG_X86_IO_APIC */ |
1da177e4 | 437 | |
1da177e4 LT |
438 | /* |
439 | * acpi_pic_sci_set_trigger() | |
5f3b1a8b | 440 | * |
1da177e4 LT |
441 | * use ELCR to set PIC-mode trigger type for SCI |
442 | * | |
443 | * If a PIC-mode SCI is not recognized or gives spurious IRQ7's | |
444 | * it may require Edge Trigger -- use "acpi_sci=edge" | |
445 | * | |
446 | * Port 0x4d0-4d1 are ECLR1 and ECLR2, the Edge/Level Control Registers | |
447 | * for the 8259 PIC. bit[n] = 1 means irq[n] is Level, otherwise Edge. | |
27b46d76 SA |
448 | * ECLR1 is IRQs 0-7 (IRQ 0, 1, 2 must be 0) |
449 | * ECLR2 is IRQs 8-15 (IRQ 8, 13 must be 0) | |
1da177e4 LT |
450 | */ |
451 | ||
4be44fcd | 452 | void __init acpi_pic_sci_set_trigger(unsigned int irq, u16 trigger) |
1da177e4 LT |
453 | { |
454 | unsigned int mask = 1 << irq; | |
455 | unsigned int old, new; | |
456 | ||
457 | /* Real old ELCR mask */ | |
458 | old = inb(0x4d0) | (inb(0x4d1) << 8); | |
459 | ||
460 | /* | |
27b46d76 | 461 | * If we use ACPI to set PCI IRQs, then we should clear ELCR |
1da177e4 LT |
462 | * since we will set it correctly as we enable the PCI irq |
463 | * routing. | |
464 | */ | |
465 | new = acpi_noirq ? old : 0; | |
466 | ||
467 | /* | |
468 | * Update SCI information in the ELCR, it isn't in the PCI | |
469 | * routing tables.. | |
470 | */ | |
471 | switch (trigger) { | |
4be44fcd | 472 | case 1: /* Edge - clear */ |
1da177e4 LT |
473 | new &= ~mask; |
474 | break; | |
4be44fcd | 475 | case 3: /* Level - set */ |
1da177e4 LT |
476 | new |= mask; |
477 | break; | |
478 | } | |
479 | ||
480 | if (old == new) | |
481 | return; | |
482 | ||
483 | printk(PREFIX "setting ELCR to %04x (from %04x)\n", new, old); | |
484 | outb(new, 0x4d0); | |
485 | outb(new >> 8, 0x4d1); | |
486 | } | |
487 | ||
1da177e4 LT |
488 | int acpi_gsi_to_irq(u32 gsi, unsigned int *irq) |
489 | { | |
f023d764 | 490 | *irq = gsi; |
1da177e4 LT |
491 | return 0; |
492 | } | |
493 | ||
1f3a6a15 KK |
494 | /* |
495 | * success: return IRQ number (>=0) | |
496 | * failure: return < 0 | |
497 | */ | |
cb654695 | 498 | int acpi_register_gsi(u32 gsi, int triggering, int polarity) |
1da177e4 LT |
499 | { |
500 | unsigned int irq; | |
501 | unsigned int plat_gsi = gsi; | |
502 | ||
503 | #ifdef CONFIG_PCI | |
504 | /* | |
505 | * Make sure all (legacy) PCI IRQs are set as level-triggered. | |
506 | */ | |
507 | if (acpi_irq_model == ACPI_IRQ_MODEL_PIC) { | |
508 | extern void eisa_set_level_irq(unsigned int irq); | |
509 | ||
cb654695 | 510 | if (triggering == ACPI_LEVEL_SENSITIVE) |
4be44fcd | 511 | eisa_set_level_irq(gsi); |
1da177e4 LT |
512 | } |
513 | #endif | |
514 | ||
515 | #ifdef CONFIG_X86_IO_APIC | |
516 | if (acpi_irq_model == ACPI_IRQ_MODEL_IOAPIC) { | |
cb654695 | 517 | plat_gsi = mp_register_gsi(gsi, triggering, polarity); |
1da177e4 LT |
518 | } |
519 | #endif | |
520 | acpi_gsi_to_irq(plat_gsi, &irq); | |
521 | return irq; | |
522 | } | |
4be44fcd | 523 | |
1da177e4 LT |
524 | /* |
525 | * ACPI based hotplug support for CPU | |
526 | */ | |
527 | #ifdef CONFIG_ACPI_HOTPLUG_CPU | |
009cbadb SR |
528 | |
529 | static int __cpuinit _acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
1da177e4 | 530 | { |
73fea175 AR |
531 | struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
532 | union acpi_object *obj; | |
5f3b1a8b | 533 | struct acpi_madt_local_apic *lapic; |
73fea175 AR |
534 | cpumask_t tmp_map, new_map; |
535 | u8 physid; | |
536 | int cpu; | |
537 | ||
538 | if (ACPI_FAILURE(acpi_evaluate_object(handle, "_MAT", NULL, &buffer))) | |
539 | return -EINVAL; | |
540 | ||
541 | if (!buffer.length || !buffer.pointer) | |
542 | return -EINVAL; | |
543 | ||
544 | obj = buffer.pointer; | |
545 | if (obj->type != ACPI_TYPE_BUFFER || | |
546 | obj->buffer.length < sizeof(*lapic)) { | |
547 | kfree(buffer.pointer); | |
548 | return -EINVAL; | |
549 | } | |
550 | ||
5f3b1a8b | 551 | lapic = (struct acpi_madt_local_apic *)obj->buffer.pointer; |
73fea175 | 552 | |
5f3b1a8b AS |
553 | if (lapic->header.type != ACPI_MADT_TYPE_LOCAL_APIC || |
554 | !(lapic->lapic_flags & ACPI_MADT_ENABLED)) { | |
73fea175 AR |
555 | kfree(buffer.pointer); |
556 | return -EINVAL; | |
557 | } | |
558 | ||
559 | physid = lapic->id; | |
560 | ||
561 | kfree(buffer.pointer); | |
562 | buffer.length = ACPI_ALLOCATE_BUFFER; | |
563 | buffer.pointer = NULL; | |
564 | ||
565 | tmp_map = cpu_present_map; | |
dfac2189 | 566 | acpi_register_lapic(physid, lapic->lapic_flags & ACPI_MADT_ENABLED); |
73fea175 AR |
567 | |
568 | /* | |
569 | * If mp_register_lapic successfully generates a new logical cpu | |
570 | * number, then the following will get us exactly what was mapped | |
571 | */ | |
572 | cpus_andnot(new_map, cpu_present_map, tmp_map); | |
573 | if (cpus_empty(new_map)) { | |
574 | printk ("Unable to map lapic to logical cpu number\n"); | |
575 | return -EINVAL; | |
576 | } | |
577 | ||
578 | cpu = first_cpu(new_map); | |
579 | ||
580 | *pcpu = cpu; | |
581 | return 0; | |
1da177e4 | 582 | } |
1da177e4 | 583 | |
009cbadb SR |
584 | /* wrapper to silence section mismatch warning */ |
585 | int __ref acpi_map_lsapic(acpi_handle handle, int *pcpu) | |
586 | { | |
587 | return _acpi_map_lsapic(handle, pcpu); | |
588 | } | |
4be44fcd | 589 | EXPORT_SYMBOL(acpi_map_lsapic); |
1da177e4 | 590 | |
4be44fcd | 591 | int acpi_unmap_lsapic(int cpu) |
1da177e4 | 592 | { |
71fff5e6 | 593 | per_cpu(x86_cpu_to_apicid, cpu) = -1; |
73fea175 AR |
594 | cpu_clear(cpu, cpu_present_map); |
595 | num_processors--; | |
596 | ||
597 | return (0); | |
1da177e4 | 598 | } |
4be44fcd | 599 | |
1da177e4 | 600 | EXPORT_SYMBOL(acpi_unmap_lsapic); |
4be44fcd | 601 | #endif /* CONFIG_ACPI_HOTPLUG_CPU */ |
1da177e4 | 602 | |
4be44fcd | 603 | int acpi_register_ioapic(acpi_handle handle, u64 phys_addr, u32 gsi_base) |
b1bb248a KK |
604 | { |
605 | /* TBD */ | |
606 | return -EINVAL; | |
607 | } | |
4be44fcd | 608 | |
b1bb248a KK |
609 | EXPORT_SYMBOL(acpi_register_ioapic); |
610 | ||
4be44fcd | 611 | int acpi_unregister_ioapic(acpi_handle handle, u32 gsi_base) |
b1bb248a KK |
612 | { |
613 | /* TBD */ | |
614 | return -EINVAL; | |
615 | } | |
4be44fcd | 616 | |
b1bb248a KK |
617 | EXPORT_SYMBOL(acpi_unregister_ioapic); |
618 | ||
5f3b1a8b | 619 | static int __init acpi_parse_sbf(struct acpi_table_header *table) |
1da177e4 | 620 | { |
5f3b1a8b | 621 | struct acpi_table_boot *sb; |
1da177e4 | 622 | |
5f3b1a8b | 623 | sb = (struct acpi_table_boot *)table; |
1da177e4 LT |
624 | if (!sb) { |
625 | printk(KERN_WARNING PREFIX "Unable to map SBF\n"); | |
626 | return -ENODEV; | |
627 | } | |
628 | ||
5f3b1a8b | 629 | sbf_port = sb->cmos_index; /* Save CMOS port */ |
1da177e4 LT |
630 | |
631 | return 0; | |
632 | } | |
633 | ||
1da177e4 | 634 | #ifdef CONFIG_HPET_TIMER |
2d0c87c3 | 635 | #include <asm/hpet.h> |
1da177e4 | 636 | |
a1dfd851 AD |
637 | static struct __initdata resource *hpet_res; |
638 | ||
5f3b1a8b | 639 | static int __init acpi_parse_hpet(struct acpi_table_header *table) |
1da177e4 LT |
640 | { |
641 | struct acpi_table_hpet *hpet_tbl; | |
642 | ||
5f3b1a8b | 643 | hpet_tbl = (struct acpi_table_hpet *)table; |
1da177e4 LT |
644 | if (!hpet_tbl) { |
645 | printk(KERN_WARNING PREFIX "Unable to map HPET\n"); | |
646 | return -ENODEV; | |
647 | } | |
648 | ||
ad363f80 | 649 | if (hpet_tbl->address.space_id != ACPI_SPACE_MEM) { |
1da177e4 LT |
650 | printk(KERN_WARNING PREFIX "HPET timers must be located in " |
651 | "memory.\n"); | |
652 | return -1; | |
653 | } | |
f0f4c343 | 654 | |
2d0c87c3 | 655 | hpet_address = hpet_tbl->address.address; |
f4df73c2 TG |
656 | |
657 | /* | |
658 | * Some broken BIOSes advertise HPET at 0x0. We really do not | |
659 | * want to allocate a resource there. | |
660 | */ | |
661 | if (!hpet_address) { | |
662 | printk(KERN_WARNING PREFIX | |
663 | "HPET id: %#x base: %#lx is invalid\n", | |
664 | hpet_tbl->id, hpet_address); | |
665 | return 0; | |
666 | } | |
667 | #ifdef CONFIG_X86_64 | |
668 | /* | |
669 | * Some even more broken BIOSes advertise HPET at | |
670 | * 0xfed0000000000000 instead of 0xfed00000. Fix it up and add | |
671 | * some noise: | |
672 | */ | |
673 | if (hpet_address == 0xfed0000000000000UL) { | |
674 | if (!hpet_force_user) { | |
675 | printk(KERN_WARNING PREFIX "HPET id: %#x " | |
676 | "base: 0xfed0000000000000 is bogus\n " | |
677 | "try hpet=force on the kernel command line to " | |
678 | "fix it up to 0xfed00000.\n", hpet_tbl->id); | |
679 | hpet_address = 0; | |
680 | return 0; | |
681 | } | |
682 | printk(KERN_WARNING PREFIX | |
683 | "HPET id: %#x base: 0xfed0000000000000 fixed up " | |
684 | "to 0xfed00000.\n", hpet_tbl->id); | |
685 | hpet_address >>= 32; | |
686 | } | |
687 | #endif | |
4be44fcd | 688 | printk(KERN_INFO PREFIX "HPET id: %#x base: %#lx\n", |
2d0c87c3 | 689 | hpet_tbl->id, hpet_address); |
1da177e4 | 690 | |
a1dfd851 AD |
691 | /* |
692 | * Allocate and initialize the HPET firmware resource for adding into | |
693 | * the resource tree during the lateinit timeframe. | |
694 | */ | |
695 | #define HPET_RESOURCE_NAME_SIZE 9 | |
696 | hpet_res = alloc_bootmem(sizeof(*hpet_res) + HPET_RESOURCE_NAME_SIZE); | |
697 | ||
a1dfd851 AD |
698 | hpet_res->name = (void *)&hpet_res[1]; |
699 | hpet_res->flags = IORESOURCE_MEM; | |
700 | snprintf((char *)hpet_res->name, HPET_RESOURCE_NAME_SIZE, "HPET %u", | |
701 | hpet_tbl->sequence); | |
702 | ||
703 | hpet_res->start = hpet_address; | |
704 | hpet_res->end = hpet_address + (1 * 1024) - 1; | |
705 | ||
1da177e4 LT |
706 | return 0; |
707 | } | |
a1dfd851 AD |
708 | |
709 | /* | |
710 | * hpet_insert_resource inserts the HPET resources used into the resource | |
711 | * tree. | |
712 | */ | |
713 | static __init int hpet_insert_resource(void) | |
714 | { | |
715 | if (!hpet_res) | |
716 | return 1; | |
717 | ||
718 | return insert_resource(&iomem_resource, hpet_res); | |
719 | } | |
720 | ||
721 | late_initcall(hpet_insert_resource); | |
722 | ||
1da177e4 LT |
723 | #else |
724 | #define acpi_parse_hpet NULL | |
725 | #endif | |
726 | ||
5f3b1a8b | 727 | static int __init acpi_parse_fadt(struct acpi_table_header *table) |
1da177e4 | 728 | { |
90660ec3 | 729 | |
1da177e4 LT |
730 | #ifdef CONFIG_X86_PM_TIMER |
731 | /* detect the location of the ACPI PM Timer */ | |
5f3b1a8b | 732 | if (acpi_gbl_FADT.header.revision >= FADT2_REVISION_ID) { |
1da177e4 | 733 | /* FADT rev. 2 */ |
5f3b1a8b | 734 | if (acpi_gbl_FADT.xpm_timer_block.space_id != |
4be44fcd | 735 | ACPI_ADR_SPACE_SYSTEM_IO) |
1da177e4 LT |
736 | return 0; |
737 | ||
5f3b1a8b | 738 | pmtmr_ioport = acpi_gbl_FADT.xpm_timer_block.address; |
e6e87b4b DSL |
739 | /* |
740 | * "X" fields are optional extensions to the original V1.0 | |
741 | * fields, so we must selectively expand V1.0 fields if the | |
742 | * corresponding X field is zero. | |
743 | */ | |
744 | if (!pmtmr_ioport) | |
5f3b1a8b | 745 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
746 | } else { |
747 | /* FADT rev. 1 */ | |
5f3b1a8b | 748 | pmtmr_ioport = acpi_gbl_FADT.pm_timer_block; |
1da177e4 LT |
749 | } |
750 | if (pmtmr_ioport) | |
4be44fcd LB |
751 | printk(KERN_INFO PREFIX "PM-Timer IO Port: %#x\n", |
752 | pmtmr_ioport); | |
1da177e4 LT |
753 | #endif |
754 | return 0; | |
755 | } | |
756 | ||
1da177e4 LT |
757 | #ifdef CONFIG_X86_LOCAL_APIC |
758 | /* | |
759 | * Parse LAPIC entries in MADT | |
760 | * returns 0 on success, < 0 on error | |
761 | */ | |
31d2092e AS |
762 | |
763 | static void __init acpi_register_lapic_address(unsigned long address) | |
764 | { | |
765 | mp_lapic_addr = address; | |
766 | ||
767 | set_fixmap_nocache(FIX_APIC_BASE, address); | |
768 | if (boot_cpu_physical_apicid == -1U) | |
769 | boot_cpu_physical_apicid = GET_APIC_ID(read_apic_id()); | |
770 | } | |
771 | ||
cbf9bd60 YL |
772 | static int __init early_acpi_parse_madt_lapic_addr_ovr(void) |
773 | { | |
774 | int count; | |
775 | ||
776 | if (!cpu_has_apic) | |
777 | return -ENODEV; | |
778 | ||
779 | /* | |
780 | * Note that the LAPIC address is obtained from the MADT (32-bit value) | |
781 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
782 | */ | |
783 | ||
784 | count = | |
785 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, | |
786 | acpi_parse_lapic_addr_ovr, 0); | |
787 | if (count < 0) { | |
788 | printk(KERN_ERR PREFIX | |
789 | "Error parsing LAPIC address override entry\n"); | |
790 | return count; | |
791 | } | |
792 | ||
793 | acpi_register_lapic_address(acpi_lapic_addr); | |
794 | ||
795 | return count; | |
796 | } | |
797 | ||
4be44fcd | 798 | static int __init acpi_parse_madt_lapic_entries(void) |
1da177e4 LT |
799 | { |
800 | int count; | |
801 | ||
0fcd2709 AK |
802 | if (!cpu_has_apic) |
803 | return -ENODEV; | |
804 | ||
5f3b1a8b | 805 | /* |
1da177e4 LT |
806 | * Note that the LAPIC address is obtained from the MADT (32-bit value) |
807 | * and (optionally) overriden by a LAPIC_ADDR_OVR entry (64-bit value). | |
808 | */ | |
809 | ||
4be44fcd | 810 | count = |
5f3b1a8b | 811 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_OVERRIDE, |
4be44fcd | 812 | acpi_parse_lapic_addr_ovr, 0); |
1da177e4 | 813 | if (count < 0) { |
4be44fcd LB |
814 | printk(KERN_ERR PREFIX |
815 | "Error parsing LAPIC address override entry\n"); | |
1da177e4 LT |
816 | return count; |
817 | } | |
818 | ||
31d2092e | 819 | acpi_register_lapic_address(acpi_lapic_addr); |
1da177e4 | 820 | |
ac049c1d JS |
821 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_SAPIC, |
822 | acpi_parse_sapic, MAX_APICS); | |
823 | ||
824 | if (!count) | |
825 | count = acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC, | |
826 | acpi_parse_lapic, MAX_APICS); | |
4be44fcd | 827 | if (!count) { |
1da177e4 LT |
828 | printk(KERN_ERR PREFIX "No LAPIC entries present\n"); |
829 | /* TBD: Cleanup to allow fallback to MPS */ | |
830 | return -ENODEV; | |
4be44fcd | 831 | } else if (count < 0) { |
1da177e4 LT |
832 | printk(KERN_ERR PREFIX "Error parsing LAPIC entry\n"); |
833 | /* TBD: Cleanup to allow fallback to MPS */ | |
834 | return count; | |
835 | } | |
836 | ||
4be44fcd | 837 | count = |
5f3b1a8b | 838 | acpi_table_parse_madt(ACPI_MADT_TYPE_LOCAL_APIC_NMI, acpi_parse_lapic_nmi, 0); |
1da177e4 LT |
839 | if (count < 0) { |
840 | printk(KERN_ERR PREFIX "Error parsing LAPIC NMI entry\n"); | |
841 | /* TBD: Cleanup to allow fallback to MPS */ | |
842 | return count; | |
843 | } | |
844 | return 0; | |
845 | } | |
4be44fcd | 846 | #endif /* CONFIG_X86_LOCAL_APIC */ |
1da177e4 | 847 | |
8466361a | 848 | #ifdef CONFIG_X86_IO_APIC |
11113f84 AS |
849 | #define MP_ISA_BUS 0 |
850 | ||
851 | #if defined(CONFIG_X86_ES7000) || defined(CONFIG_X86_GENERICARCH) | |
852 | extern int es7000_plat; | |
853 | #endif | |
854 | ||
5f895148 AS |
855 | static struct { |
856 | int apic_id; | |
857 | int gsi_base; | |
858 | int gsi_end; | |
859 | DECLARE_BITMAP(pin_programmed, MP_MAX_IOAPIC_PIN + 1); | |
860 | } mp_ioapic_routing[MAX_IO_APICS]; | |
11113f84 AS |
861 | |
862 | static int mp_find_ioapic(int gsi) | |
863 | { | |
864 | int i = 0; | |
865 | ||
866 | /* Find the IOAPIC that manages this GSI. */ | |
867 | for (i = 0; i < nr_ioapics; i++) { | |
868 | if ((gsi >= mp_ioapic_routing[i].gsi_base) | |
869 | && (gsi <= mp_ioapic_routing[i].gsi_end)) | |
870 | return i; | |
871 | } | |
872 | ||
873 | printk(KERN_ERR "ERROR: Unable to locate IOAPIC for GSI %d\n", gsi); | |
874 | return -1; | |
875 | } | |
876 | ||
877 | static u8 __init uniq_ioapic_id(u8 id) | |
878 | { | |
879 | #ifdef CONFIG_X86_32 | |
880 | if ((boot_cpu_data.x86_vendor == X86_VENDOR_INTEL) && | |
881 | !APIC_XAPIC(apic_version[boot_cpu_physical_apicid])) | |
882 | return io_apic_get_unique_id(nr_ioapics, id); | |
883 | else | |
884 | return id; | |
885 | #else | |
886 | int i; | |
887 | DECLARE_BITMAP(used, 256); | |
888 | bitmap_zero(used, 256); | |
889 | for (i = 0; i < nr_ioapics; i++) { | |
890 | struct mpc_config_ioapic *ia = &mp_ioapics[i]; | |
891 | __set_bit(ia->mpc_apicid, used); | |
892 | } | |
893 | if (!test_bit(id, used)) | |
894 | return id; | |
895 | return find_first_zero_bit(used, 256); | |
896 | #endif | |
897 | } | |
898 | ||
899 | static int bad_ioapic(unsigned long address) | |
900 | { | |
901 | if (nr_ioapics >= MAX_IO_APICS) { | |
902 | printk(KERN_ERR "ERROR: Max # of I/O APICs (%d) exceeded " | |
903 | "(found %d)\n", MAX_IO_APICS, nr_ioapics); | |
904 | panic("Recompile kernel with bigger MAX_IO_APICS!\n"); | |
905 | } | |
906 | if (!address) { | |
907 | printk(KERN_ERR "WARNING: Bogus (zero) I/O APIC address" | |
908 | " found in table, skipping!\n"); | |
909 | return 1; | |
910 | } | |
911 | return 0; | |
912 | } | |
913 | ||
914 | void __init mp_register_ioapic(int id, u32 address, u32 gsi_base) | |
915 | { | |
916 | int idx = 0; | |
917 | ||
918 | if (bad_ioapic(address)) | |
919 | return; | |
920 | ||
921 | idx = nr_ioapics; | |
922 | ||
923 | mp_ioapics[idx].mpc_type = MP_IOAPIC; | |
924 | mp_ioapics[idx].mpc_flags = MPC_APIC_USABLE; | |
925 | mp_ioapics[idx].mpc_apicaddr = address; | |
926 | ||
927 | set_fixmap_nocache(FIX_IO_APIC_BASE_0 + idx, address); | |
928 | mp_ioapics[idx].mpc_apicid = uniq_ioapic_id(id); | |
929 | #ifdef CONFIG_X86_32 | |
930 | mp_ioapics[idx].mpc_apicver = io_apic_get_version(idx); | |
931 | #else | |
932 | mp_ioapics[idx].mpc_apicver = 0; | |
933 | #endif | |
934 | /* | |
935 | * Build basic GSI lookup table to facilitate gsi->io_apic lookups | |
936 | * and to prevent reprogramming of IOAPIC pins (PCI GSIs). | |
937 | */ | |
938 | mp_ioapic_routing[idx].apic_id = mp_ioapics[idx].mpc_apicid; | |
939 | mp_ioapic_routing[idx].gsi_base = gsi_base; | |
940 | mp_ioapic_routing[idx].gsi_end = gsi_base + | |
941 | io_apic_get_redir_entries(idx); | |
942 | ||
943 | printk(KERN_INFO "IOAPIC[%d]: apic_id %d, version %d, address 0x%x, " | |
944 | "GSI %d-%d\n", idx, mp_ioapics[idx].mpc_apicid, | |
945 | mp_ioapics[idx].mpc_apicver, mp_ioapics[idx].mpc_apicaddr, | |
946 | mp_ioapic_routing[idx].gsi_base, mp_ioapic_routing[idx].gsi_end); | |
947 | ||
948 | nr_ioapics++; | |
949 | } | |
950 | ||
951 | void __init mp_override_legacy_irq(u8 bus_irq, u8 polarity, u8 trigger, u32 gsi) | |
952 | { | |
953 | int ioapic = -1; | |
954 | int pin = -1; | |
955 | ||
956 | /* | |
957 | * Convert 'gsi' to 'ioapic.pin'. | |
958 | */ | |
959 | ioapic = mp_find_ioapic(gsi); | |
960 | if (ioapic < 0) | |
961 | return; | |
962 | pin = gsi - mp_ioapic_routing[ioapic].gsi_base; | |
963 | ||
964 | /* | |
965 | * TBD: This check is for faulty timer entries, where the override | |
966 | * erroneously sets the trigger to level, resulting in a HUGE | |
967 | * increase of timer interrupts! | |
968 | */ | |
969 | if ((bus_irq == 0) && (trigger == 3)) | |
970 | trigger = 1; | |
971 | ||
972 | mp_irqs[mp_irq_entries].mpc_type = MP_INTSRC; | |
973 | mp_irqs[mp_irq_entries].mpc_irqtype = mp_INT; | |
974 | mp_irqs[mp_irq_entries].mpc_irqflag = (trigger << 2) | polarity; | |
975 | mp_irqs[mp_irq_entries].mpc_srcbus = MP_ISA_BUS; | |
976 | mp_irqs[mp_irq_entries].mpc_srcbusirq = bus_irq; /* IRQ */ | |
977 | mp_irqs[mp_irq_entries].mpc_dstapic = | |
978 | mp_ioapics[ioapic].mpc_apicid; /* APIC ID */ | |
979 | mp_irqs[mp_irq_entries].mpc_dstirq = pin; /* INTIN# */ | |
980 | ||
981 | if (++mp_irq_entries == MAX_IRQ_SOURCES) | |
982 | panic("Max # of irq sources exceeded!!\n"); | |
983 | ||
984 | } | |
985 | ||
986 | void __init mp_config_acpi_legacy_irqs(void) | |
987 | { | |
988 | int i = 0; | |
989 | int ioapic = -1; | |
990 | ||
991 | #if defined (CONFIG_MCA) || defined (CONFIG_EISA) | |
992 | /* | |
993 | * Fabricate the legacy ISA bus (bus #31). | |
994 | */ | |
995 | mp_bus_id_to_type[MP_ISA_BUS] = MP_BUS_ISA; | |
996 | #endif | |
997 | set_bit(MP_ISA_BUS, mp_bus_not_pci); | |
998 | Dprintk("Bus #%d is ISA\n", MP_ISA_BUS); | |
999 | ||
1000 | #if defined(CONFIG_X86_ES7000) || defined(CONFIG_X86_GENERICARCH) | |
1001 | /* | |
1002 | * Older generations of ES7000 have no legacy identity mappings | |
1003 | */ | |
1004 | if (es7000_plat == 1) | |
1005 | return; | |
1006 | #endif | |
1007 | ||
1008 | /* | |
1009 | * Locate the IOAPIC that manages the ISA IRQs (0-15). | |
1010 | */ | |
1011 | ioapic = mp_find_ioapic(0); | |
1012 | if (ioapic < 0) | |
1013 | return; | |
1014 | ||
1015 | mp_irqs[mp_irq_entries].mpc_type = MP_INTSRC; | |
1016 | mp_irqs[mp_irq_entries].mpc_irqflag = 0; /* Conforming */ | |
1017 | mp_irqs[mp_irq_entries].mpc_srcbus = MP_ISA_BUS; | |
1018 | #ifdef CONFIG_X86_IO_APIC | |
1019 | mp_irqs[mp_irq_entries].mpc_dstapic = mp_ioapics[ioapic].mpc_apicid; | |
1020 | #endif | |
1021 | /* | |
1022 | * Use the default configuration for the IRQs 0-15. Unless | |
1023 | * overridden by (MADT) interrupt source override entries. | |
1024 | */ | |
1025 | for (i = 0; i < 16; i++) { | |
1026 | int idx; | |
1027 | ||
1028 | for (idx = 0; idx < mp_irq_entries; idx++) { | |
1029 | struct mpc_config_intsrc *irq = mp_irqs + idx; | |
1030 | ||
1031 | /* Do we already have a mapping for this ISA IRQ? */ | |
1032 | if (irq->mpc_srcbus == MP_ISA_BUS | |
1033 | && irq->mpc_srcbusirq == i) | |
1034 | break; | |
1035 | ||
1036 | /* Do we already have a mapping for this IOAPIC pin */ | |
1037 | if ((irq->mpc_dstapic == | |
1038 | mp_irqs[mp_irq_entries].mpc_dstapic) && | |
1039 | (irq->mpc_dstirq == i)) | |
1040 | break; | |
1041 | } | |
1042 | ||
1043 | if (idx != mp_irq_entries) { | |
1044 | printk(KERN_DEBUG "ACPI: IRQ%d used by override.\n", i); | |
1045 | continue; /* IRQ already used */ | |
1046 | } | |
1047 | ||
1048 | mp_irqs[mp_irq_entries].mpc_irqtype = mp_INT; | |
1049 | mp_irqs[mp_irq_entries].mpc_srcbusirq = i; /* Identity mapped */ | |
1050 | mp_irqs[mp_irq_entries].mpc_dstirq = i; | |
1051 | ||
1052 | if (++mp_irq_entries == MAX_IRQ_SOURCES) | |
1053 | panic("Max # of irq sources exceeded!!\n"); | |
1054 | } | |
1055 | } | |
1056 | ||
1057 | int mp_register_gsi(u32 gsi, int triggering, int polarity) | |
1058 | { | |
1059 | int ioapic; | |
1060 | int ioapic_pin; | |
1061 | #ifdef CONFIG_X86_32 | |
1062 | #define MAX_GSI_NUM 4096 | |
1063 | #define IRQ_COMPRESSION_START 64 | |
1064 | ||
1065 | static int pci_irq = IRQ_COMPRESSION_START; | |
1066 | /* | |
1067 | * Mapping between Global System Interrupts, which | |
1068 | * represent all possible interrupts, and IRQs | |
1069 | * assigned to actual devices. | |
1070 | */ | |
1071 | static int gsi_to_irq[MAX_GSI_NUM]; | |
1072 | #else | |
1073 | ||
1074 | if (acpi_irq_model != ACPI_IRQ_MODEL_IOAPIC) | |
1075 | return gsi; | |
1076 | #endif | |
1077 | ||
1078 | /* Don't set up the ACPI SCI because it's already set up */ | |
1079 | if (acpi_gbl_FADT.sci_interrupt == gsi) | |
1080 | return gsi; | |
1081 | ||
1082 | ioapic = mp_find_ioapic(gsi); | |
1083 | if (ioapic < 0) { | |
1084 | printk(KERN_WARNING "No IOAPIC for GSI %u\n", gsi); | |
1085 | return gsi; | |
1086 | } | |
1087 | ||
1088 | ioapic_pin = gsi - mp_ioapic_routing[ioapic].gsi_base; | |
1089 | ||
1090 | #ifdef CONFIG_X86_32 | |
1091 | if (ioapic_renumber_irq) | |
1092 | gsi = ioapic_renumber_irq(ioapic, gsi); | |
1093 | #endif | |
1094 | ||
1095 | /* | |
1096 | * Avoid pin reprogramming. PRTs typically include entries | |
1097 | * with redundant pin->gsi mappings (but unique PCI devices); | |
1098 | * we only program the IOAPIC on the first. | |
1099 | */ | |
1100 | if (ioapic_pin > MP_MAX_IOAPIC_PIN) { | |
1101 | printk(KERN_ERR "Invalid reference to IOAPIC pin " | |
1102 | "%d-%d\n", mp_ioapic_routing[ioapic].apic_id, | |
1103 | ioapic_pin); | |
1104 | return gsi; | |
1105 | } | |
1106 | if (test_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed)) { | |
1107 | Dprintk(KERN_DEBUG "Pin %d-%d already programmed\n", | |
1108 | mp_ioapic_routing[ioapic].apic_id, ioapic_pin); | |
1109 | #ifdef CONFIG_X86_32 | |
1110 | return (gsi < IRQ_COMPRESSION_START ? gsi : gsi_to_irq[gsi]); | |
1111 | #else | |
1112 | return gsi; | |
1113 | #endif | |
1114 | } | |
1115 | ||
1116 | set_bit(ioapic_pin, mp_ioapic_routing[ioapic].pin_programmed); | |
1117 | #ifdef CONFIG_X86_32 | |
1118 | /* | |
1119 | * For GSI >= 64, use IRQ compression | |
1120 | */ | |
1121 | if ((gsi >= IRQ_COMPRESSION_START) | |
1122 | && (triggering == ACPI_LEVEL_SENSITIVE)) { | |
1123 | /* | |
1124 | * For PCI devices assign IRQs in order, avoiding gaps | |
1125 | * due to unused I/O APIC pins. | |
1126 | */ | |
1127 | int irq = gsi; | |
1128 | if (gsi < MAX_GSI_NUM) { | |
1129 | /* | |
1130 | * Retain the VIA chipset work-around (gsi > 15), but | |
1131 | * avoid a problem where the 8254 timer (IRQ0) is setup | |
1132 | * via an override (so it's not on pin 0 of the ioapic), | |
1133 | * and at the same time, the pin 0 interrupt is a PCI | |
1134 | * type. The gsi > 15 test could cause these two pins | |
1135 | * to be shared as IRQ0, and they are not shareable. | |
1136 | * So test for this condition, and if necessary, avoid | |
1137 | * the pin collision. | |
1138 | */ | |
1139 | gsi = pci_irq++; | |
1140 | /* | |
1141 | * Don't assign IRQ used by ACPI SCI | |
1142 | */ | |
1143 | if (gsi == acpi_gbl_FADT.sci_interrupt) | |
1144 | gsi = pci_irq++; | |
1145 | gsi_to_irq[irq] = gsi; | |
1146 | } else { | |
1147 | printk(KERN_ERR "GSI %u is too high\n", gsi); | |
1148 | return gsi; | |
1149 | } | |
1150 | } | |
1151 | #endif | |
1152 | io_apic_set_pci_routing(ioapic, ioapic_pin, gsi, | |
1153 | triggering == ACPI_EDGE_SENSITIVE ? 0 : 1, | |
1154 | polarity == ACPI_ACTIVE_HIGH ? 0 : 1); | |
1155 | return gsi; | |
1156 | } | |
1157 | ||
1da177e4 LT |
1158 | /* |
1159 | * Parse IOAPIC related entries in MADT | |
1160 | * returns 0 on success, < 0 on error | |
1161 | */ | |
4be44fcd | 1162 | static int __init acpi_parse_madt_ioapic_entries(void) |
1da177e4 LT |
1163 | { |
1164 | int count; | |
1165 | ||
1166 | /* | |
1167 | * ACPI interpreter is required to complete interrupt setup, | |
1168 | * so if it is off, don't enumerate the io-apics with ACPI. | |
1169 | * If MPS is present, it will handle them, | |
1170 | * otherwise the system will stay in PIC mode | |
1171 | */ | |
1172 | if (acpi_disabled || acpi_noirq) { | |
1173 | return -ENODEV; | |
4be44fcd | 1174 | } |
1da177e4 | 1175 | |
5f3b1a8b | 1176 | if (!cpu_has_apic) |
d3b6a349 AK |
1177 | return -ENODEV; |
1178 | ||
1da177e4 | 1179 | /* |
4be44fcd | 1180 | * if "noapic" boot option, don't look for IO-APICs |
1da177e4 LT |
1181 | */ |
1182 | if (skip_ioapic_setup) { | |
1183 | printk(KERN_INFO PREFIX "Skipping IOAPIC probe " | |
4be44fcd | 1184 | "due to 'noapic' option.\n"); |
1da177e4 LT |
1185 | return -ENODEV; |
1186 | } | |
1187 | ||
4be44fcd | 1188 | count = |
5f3b1a8b | 1189 | acpi_table_parse_madt(ACPI_MADT_TYPE_IO_APIC, acpi_parse_ioapic, |
4be44fcd | 1190 | MAX_IO_APICS); |
1da177e4 LT |
1191 | if (!count) { |
1192 | printk(KERN_ERR PREFIX "No IOAPIC entries present\n"); | |
1193 | return -ENODEV; | |
4be44fcd | 1194 | } else if (count < 0) { |
1da177e4 LT |
1195 | printk(KERN_ERR PREFIX "Error parsing IOAPIC entry\n"); |
1196 | return count; | |
1197 | } | |
1198 | ||
4be44fcd | 1199 | count = |
5f3b1a8b | 1200 | acpi_table_parse_madt(ACPI_MADT_TYPE_INTERRUPT_OVERRIDE, acpi_parse_int_src_ovr, |
4be44fcd | 1201 | NR_IRQ_VECTORS); |
1da177e4 | 1202 | if (count < 0) { |
4be44fcd LB |
1203 | printk(KERN_ERR PREFIX |
1204 | "Error parsing interrupt source overrides entry\n"); | |
1da177e4 LT |
1205 | /* TBD: Cleanup to allow fallback to MPS */ |
1206 | return count; | |
1207 | } | |
1208 | ||
1209 | /* | |
1210 | * If BIOS did not supply an INT_SRC_OVR for the SCI | |
1211 | * pretend we got one so we can set the SCI flags. | |
1212 | */ | |
1213 | if (!acpi_sci_override_gsi) | |
cee324b1 | 1214 | acpi_sci_ioapic_setup(acpi_gbl_FADT.sci_interrupt, 0, 0); |
1da177e4 LT |
1215 | |
1216 | /* Fill in identity legacy mapings where no override */ | |
1217 | mp_config_acpi_legacy_irqs(); | |
1218 | ||
4be44fcd | 1219 | count = |
5f3b1a8b | 1220 | acpi_table_parse_madt(ACPI_MADT_TYPE_NMI_SOURCE, acpi_parse_nmi_src, |
4be44fcd | 1221 | NR_IRQ_VECTORS); |
1da177e4 LT |
1222 | if (count < 0) { |
1223 | printk(KERN_ERR PREFIX "Error parsing NMI SRC entry\n"); | |
1224 | /* TBD: Cleanup to allow fallback to MPS */ | |
1225 | return count; | |
1226 | } | |
1227 | ||
1228 | return 0; | |
1229 | } | |
1230 | #else | |
1231 | static inline int acpi_parse_madt_ioapic_entries(void) | |
1232 | { | |
1233 | return -1; | |
1234 | } | |
8466361a | 1235 | #endif /* !CONFIG_X86_IO_APIC */ |
1da177e4 | 1236 | |
cbf9bd60 YL |
1237 | static void __init early_acpi_process_madt(void) |
1238 | { | |
1239 | #ifdef CONFIG_X86_LOCAL_APIC | |
1240 | int error; | |
1241 | ||
1242 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { | |
1243 | ||
1244 | /* | |
1245 | * Parse MADT LAPIC entries | |
1246 | */ | |
1247 | error = early_acpi_parse_madt_lapic_addr_ovr(); | |
1248 | if (!error) { | |
1249 | acpi_lapic = 1; | |
1250 | smp_found_config = 1; | |
1251 | } | |
1252 | if (error == -EINVAL) { | |
1253 | /* | |
1254 | * Dell Precision Workstation 410, 610 come here. | |
1255 | */ | |
1256 | printk(KERN_ERR PREFIX | |
1257 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1258 | disable_acpi(); | |
1259 | } | |
1260 | } | |
1261 | #endif | |
1262 | } | |
1263 | ||
4be44fcd | 1264 | static void __init acpi_process_madt(void) |
1da177e4 LT |
1265 | { |
1266 | #ifdef CONFIG_X86_LOCAL_APIC | |
7f8f97c3 | 1267 | int error; |
1da177e4 | 1268 | |
7f8f97c3 | 1269 | if (!acpi_table_parse(ACPI_SIG_MADT, acpi_parse_madt)) { |
1da177e4 LT |
1270 | |
1271 | /* | |
1272 | * Parse MADT LAPIC entries | |
1273 | */ | |
1274 | error = acpi_parse_madt_lapic_entries(); | |
1275 | if (!error) { | |
1276 | acpi_lapic = 1; | |
1277 | ||
911a62d4 VP |
1278 | #ifdef CONFIG_X86_GENERICARCH |
1279 | generic_bigsmp_probe(); | |
1280 | #endif | |
1da177e4 LT |
1281 | /* |
1282 | * Parse MADT IO-APIC entries | |
1283 | */ | |
1284 | error = acpi_parse_madt_ioapic_entries(); | |
1285 | if (!error) { | |
1286 | acpi_irq_model = ACPI_IRQ_MODEL_IOAPIC; | |
1287 | acpi_irq_balance_set(NULL); | |
1288 | acpi_ioapic = 1; | |
1289 | ||
1290 | smp_found_config = 1; | |
3c43f039 | 1291 | setup_apic_routing(); |
1da177e4 LT |
1292 | } |
1293 | } | |
1294 | if (error == -EINVAL) { | |
1295 | /* | |
1296 | * Dell Precision Workstation 410, 610 come here. | |
1297 | */ | |
4be44fcd LB |
1298 | printk(KERN_ERR PREFIX |
1299 | "Invalid BIOS MADT, disabling ACPI\n"); | |
1da177e4 LT |
1300 | disable_acpi(); |
1301 | } | |
1302 | } | |
1303 | #endif | |
1304 | return; | |
1305 | } | |
1306 | ||
aea00143 AP |
1307 | #ifdef __i386__ |
1308 | ||
1855256c | 1309 | static int __init disable_acpi_irq(const struct dmi_system_id *d) |
aea00143 AP |
1310 | { |
1311 | if (!acpi_force) { | |
1312 | printk(KERN_NOTICE "%s detected: force use of acpi=noirq\n", | |
1313 | d->ident); | |
1314 | acpi_noirq_set(); | |
1315 | } | |
1316 | return 0; | |
1317 | } | |
1318 | ||
1855256c | 1319 | static int __init disable_acpi_pci(const struct dmi_system_id *d) |
aea00143 AP |
1320 | { |
1321 | if (!acpi_force) { | |
1322 | printk(KERN_NOTICE "%s detected: force use of pci=noacpi\n", | |
1323 | d->ident); | |
1324 | acpi_disable_pci(); | |
1325 | } | |
1326 | return 0; | |
1327 | } | |
aea00143 | 1328 | |
1855256c | 1329 | static int __init dmi_disable_acpi(const struct dmi_system_id *d) |
aea00143 AP |
1330 | { |
1331 | if (!acpi_force) { | |
4be44fcd | 1332 | printk(KERN_NOTICE "%s detected: acpi off\n", d->ident); |
aea00143 AP |
1333 | disable_acpi(); |
1334 | } else { | |
1335 | printk(KERN_NOTICE | |
1336 | "Warning: DMI blacklist says broken, but acpi forced\n"); | |
1337 | } | |
1338 | return 0; | |
1339 | } | |
1340 | ||
1341 | /* | |
1342 | * Limit ACPI to CPU enumeration for HT | |
1343 | */ | |
1855256c | 1344 | static int __init force_acpi_ht(const struct dmi_system_id *d) |
aea00143 AP |
1345 | { |
1346 | if (!acpi_force) { | |
4be44fcd LB |
1347 | printk(KERN_NOTICE "%s detected: force use of acpi=ht\n", |
1348 | d->ident); | |
aea00143 AP |
1349 | disable_acpi(); |
1350 | acpi_ht = 1; | |
1351 | } else { | |
1352 | printk(KERN_NOTICE | |
1353 | "Warning: acpi=force overrules DMI blacklist: acpi=ht\n"); | |
1354 | } | |
1355 | return 0; | |
1356 | } | |
1357 | ||
1358 | /* | |
1359 | * If your system is blacklisted here, but you find that acpi=force | |
1360 | * works for you, please contact acpi-devel@sourceforge.net | |
1361 | */ | |
1362 | static struct dmi_system_id __initdata acpi_dmi_table[] = { | |
1363 | /* | |
1364 | * Boxes that need ACPI disabled | |
1365 | */ | |
1366 | { | |
4be44fcd LB |
1367 | .callback = dmi_disable_acpi, |
1368 | .ident = "IBM Thinkpad", | |
1369 | .matches = { | |
1370 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1371 | DMI_MATCH(DMI_BOARD_NAME, "2629H1G"), | |
1372 | }, | |
1373 | }, | |
aea00143 AP |
1374 | |
1375 | /* | |
1376 | * Boxes that need acpi=ht | |
1377 | */ | |
1378 | { | |
4be44fcd LB |
1379 | .callback = force_acpi_ht, |
1380 | .ident = "FSC Primergy T850", | |
1381 | .matches = { | |
1382 | DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), | |
1383 | DMI_MATCH(DMI_PRODUCT_NAME, "PRIMERGY T850"), | |
1384 | }, | |
1385 | }, | |
aea00143 | 1386 | { |
4be44fcd LB |
1387 | .callback = force_acpi_ht, |
1388 | .ident = "HP VISUALIZE NT Workstation", | |
1389 | .matches = { | |
1390 | DMI_MATCH(DMI_BOARD_VENDOR, "Hewlett-Packard"), | |
1391 | DMI_MATCH(DMI_PRODUCT_NAME, "HP VISUALIZE NT Workstation"), | |
1392 | }, | |
1393 | }, | |
aea00143 | 1394 | { |
4be44fcd LB |
1395 | .callback = force_acpi_ht, |
1396 | .ident = "Compaq Workstation W8000", | |
1397 | .matches = { | |
1398 | DMI_MATCH(DMI_SYS_VENDOR, "Compaq"), | |
1399 | DMI_MATCH(DMI_PRODUCT_NAME, "Workstation W8000"), | |
1400 | }, | |
1401 | }, | |
aea00143 | 1402 | { |
4be44fcd LB |
1403 | .callback = force_acpi_ht, |
1404 | .ident = "ASUS P4B266", | |
1405 | .matches = { | |
1406 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1407 | DMI_MATCH(DMI_BOARD_NAME, "P4B266"), | |
1408 | }, | |
1409 | }, | |
aea00143 | 1410 | { |
4be44fcd LB |
1411 | .callback = force_acpi_ht, |
1412 | .ident = "ASUS P2B-DS", | |
1413 | .matches = { | |
1414 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1415 | DMI_MATCH(DMI_BOARD_NAME, "P2B-DS"), | |
1416 | }, | |
1417 | }, | |
aea00143 | 1418 | { |
4be44fcd LB |
1419 | .callback = force_acpi_ht, |
1420 | .ident = "ASUS CUR-DLS", | |
1421 | .matches = { | |
1422 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1423 | DMI_MATCH(DMI_BOARD_NAME, "CUR-DLS"), | |
1424 | }, | |
1425 | }, | |
aea00143 | 1426 | { |
4be44fcd LB |
1427 | .callback = force_acpi_ht, |
1428 | .ident = "ABIT i440BX-W83977", | |
1429 | .matches = { | |
1430 | DMI_MATCH(DMI_BOARD_VENDOR, "ABIT <http://www.abit.com>"), | |
1431 | DMI_MATCH(DMI_BOARD_NAME, "i440BX-W83977 (BP6)"), | |
1432 | }, | |
1433 | }, | |
aea00143 | 1434 | { |
4be44fcd LB |
1435 | .callback = force_acpi_ht, |
1436 | .ident = "IBM Bladecenter", | |
1437 | .matches = { | |
1438 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1439 | DMI_MATCH(DMI_BOARD_NAME, "IBM eServer BladeCenter HS20"), | |
1440 | }, | |
1441 | }, | |
aea00143 | 1442 | { |
4be44fcd LB |
1443 | .callback = force_acpi_ht, |
1444 | .ident = "IBM eServer xSeries 360", | |
1445 | .matches = { | |
1446 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1447 | DMI_MATCH(DMI_BOARD_NAME, "eServer xSeries 360"), | |
1448 | }, | |
1449 | }, | |
aea00143 | 1450 | { |
4be44fcd LB |
1451 | .callback = force_acpi_ht, |
1452 | .ident = "IBM eserver xSeries 330", | |
1453 | .matches = { | |
1454 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1455 | DMI_MATCH(DMI_BOARD_NAME, "eserver xSeries 330"), | |
1456 | }, | |
1457 | }, | |
aea00143 | 1458 | { |
4be44fcd LB |
1459 | .callback = force_acpi_ht, |
1460 | .ident = "IBM eserver xSeries 440", | |
1461 | .matches = { | |
1462 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1463 | DMI_MATCH(DMI_PRODUCT_NAME, "eserver xSeries 440"), | |
1464 | }, | |
1465 | }, | |
aea00143 | 1466 | |
aea00143 AP |
1467 | /* |
1468 | * Boxes that need ACPI PCI IRQ routing disabled | |
1469 | */ | |
1470 | { | |
4be44fcd LB |
1471 | .callback = disable_acpi_irq, |
1472 | .ident = "ASUS A7V", | |
1473 | .matches = { | |
1474 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC"), | |
1475 | DMI_MATCH(DMI_BOARD_NAME, "<A7V>"), | |
1476 | /* newer BIOS, Revision 1011, does work */ | |
1477 | DMI_MATCH(DMI_BIOS_VERSION, | |
1478 | "ASUS A7V ACPI BIOS Revision 1007"), | |
1479 | }, | |
1480 | }, | |
74586fca LB |
1481 | { |
1482 | /* | |
1483 | * Latest BIOS for IBM 600E (1.16) has bad pcinum | |
1484 | * for LPC bridge, which is needed for the PCI | |
1485 | * interrupt links to work. DSDT fix is in bug 5966. | |
1486 | * 2645, 2646 model numbers are shared with 600/600E/600X | |
1487 | */ | |
1488 | .callback = disable_acpi_irq, | |
1489 | .ident = "IBM Thinkpad 600 Series 2645", | |
1490 | .matches = { | |
1491 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1492 | DMI_MATCH(DMI_BOARD_NAME, "2645"), | |
1493 | }, | |
1494 | }, | |
1495 | { | |
1496 | .callback = disable_acpi_irq, | |
1497 | .ident = "IBM Thinkpad 600 Series 2646", | |
1498 | .matches = { | |
1499 | DMI_MATCH(DMI_BOARD_VENDOR, "IBM"), | |
1500 | DMI_MATCH(DMI_BOARD_NAME, "2646"), | |
1501 | }, | |
1502 | }, | |
aea00143 AP |
1503 | /* |
1504 | * Boxes that need ACPI PCI IRQ routing and PCI scan disabled | |
1505 | */ | |
4be44fcd LB |
1506 | { /* _BBN 0 bug */ |
1507 | .callback = disable_acpi_pci, | |
1508 | .ident = "ASUS PR-DLS", | |
1509 | .matches = { | |
1510 | DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."), | |
1511 | DMI_MATCH(DMI_BOARD_NAME, "PR-DLS"), | |
1512 | DMI_MATCH(DMI_BIOS_VERSION, | |
1513 | "ASUS PR-DLS ACPI BIOS Revision 1010"), | |
1514 | DMI_MATCH(DMI_BIOS_DATE, "03/21/2003") | |
1515 | }, | |
1516 | }, | |
aea00143 | 1517 | { |
4be44fcd LB |
1518 | .callback = disable_acpi_pci, |
1519 | .ident = "Acer TravelMate 36x Laptop", | |
1520 | .matches = { | |
1521 | DMI_MATCH(DMI_SYS_VENDOR, "Acer"), | |
1522 | DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 360"), | |
1523 | }, | |
1524 | }, | |
4be44fcd | 1525 | {} |
aea00143 AP |
1526 | }; |
1527 | ||
4be44fcd | 1528 | #endif /* __i386__ */ |
aea00143 | 1529 | |
1da177e4 LT |
1530 | /* |
1531 | * acpi_boot_table_init() and acpi_boot_init() | |
1532 | * called from setup_arch(), always. | |
1533 | * 1. checksums all tables | |
1534 | * 2. enumerates lapics | |
1535 | * 3. enumerates io-apics | |
1536 | * | |
1537 | * acpi_table_init() is separate to allow reading SRAT without | |
1538 | * other side effects. | |
1539 | * | |
1540 | * side effects of acpi_boot_init: | |
1541 | * acpi_lapic = 1 if LAPIC found | |
1542 | * acpi_ioapic = 1 if IOAPIC found | |
1543 | * if (acpi_lapic && acpi_ioapic) smp_found_config = 1; | |
1544 | * if acpi_blacklisted() acpi_disabled = 1; | |
1545 | * acpi_irq_model=... | |
1546 | * ... | |
1547 | * | |
1548 | * return value: (currently ignored) | |
1549 | * 0: success | |
1550 | * !0: failure | |
1551 | */ | |
1552 | ||
4be44fcd | 1553 | int __init acpi_boot_table_init(void) |
1da177e4 LT |
1554 | { |
1555 | int error; | |
1556 | ||
aea00143 AP |
1557 | #ifdef __i386__ |
1558 | dmi_check_system(acpi_dmi_table); | |
1559 | #endif | |
1560 | ||
1da177e4 LT |
1561 | /* |
1562 | * If acpi_disabled, bail out | |
1563 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1564 | */ | |
1565 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1566 | return 1; |
1da177e4 | 1567 | |
5f3b1a8b | 1568 | /* |
1da177e4 LT |
1569 | * Initialize the ACPI boot-time table parser. |
1570 | */ | |
1571 | error = acpi_table_init(); | |
1572 | if (error) { | |
1573 | disable_acpi(); | |
1574 | return error; | |
1575 | } | |
1da177e4 | 1576 | |
5f3b1a8b | 1577 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1578 | |
1579 | /* | |
1580 | * blacklist may disable ACPI entirely | |
1581 | */ | |
1582 | error = acpi_blacklisted(); | |
1583 | if (error) { | |
1da177e4 LT |
1584 | if (acpi_force) { |
1585 | printk(KERN_WARNING PREFIX "acpi=force override\n"); | |
1586 | } else { | |
1587 | printk(KERN_WARNING PREFIX "Disabling ACPI support\n"); | |
1588 | disable_acpi(); | |
1589 | return error; | |
1590 | } | |
1591 | } | |
cbf9bd60 YL |
1592 | |
1593 | return 0; | |
1594 | } | |
1595 | ||
1596 | int __init early_acpi_boot_init(void) | |
1597 | { | |
1598 | /* | |
1599 | * If acpi_disabled, bail out | |
1600 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1601 | */ | |
1602 | if (acpi_disabled && !acpi_ht) | |
1603 | return 1; | |
1604 | ||
1605 | /* | |
1606 | * Process the Multiple APIC Description Table (MADT), if present | |
1607 | */ | |
1608 | early_acpi_process_madt(); | |
1da177e4 LT |
1609 | |
1610 | return 0; | |
1611 | } | |
1612 | ||
1da177e4 LT |
1613 | int __init acpi_boot_init(void) |
1614 | { | |
1615 | /* | |
1616 | * If acpi_disabled, bail out | |
1617 | * One exception: acpi=ht continues far enough to enumerate LAPICs | |
1618 | */ | |
1619 | if (acpi_disabled && !acpi_ht) | |
4be44fcd | 1620 | return 1; |
1da177e4 | 1621 | |
5f3b1a8b | 1622 | acpi_table_parse(ACPI_SIG_BOOT, acpi_parse_sbf); |
1da177e4 LT |
1623 | |
1624 | /* | |
1625 | * set sci_int and PM timer address | |
1626 | */ | |
ceb6c468 | 1627 | acpi_table_parse(ACPI_SIG_FADT, acpi_parse_fadt); |
1da177e4 LT |
1628 | |
1629 | /* | |
1630 | * Process the Multiple APIC Description Table (MADT), if present | |
1631 | */ | |
1632 | acpi_process_madt(); | |
1633 | ||
5f3b1a8b | 1634 | acpi_table_parse(ACPI_SIG_HPET, acpi_parse_hpet); |
1da177e4 LT |
1635 | |
1636 | return 0; | |
1637 | } | |
1a3f239d RR |
1638 | |
1639 | static int __init parse_acpi(char *arg) | |
1640 | { | |
1641 | if (!arg) | |
1642 | return -EINVAL; | |
1643 | ||
1644 | /* "acpi=off" disables both ACPI table parsing and interpreter */ | |
1645 | if (strcmp(arg, "off") == 0) { | |
1646 | disable_acpi(); | |
1647 | } | |
1648 | /* acpi=force to over-ride black-list */ | |
1649 | else if (strcmp(arg, "force") == 0) { | |
1650 | acpi_force = 1; | |
1651 | acpi_ht = 1; | |
1652 | acpi_disabled = 0; | |
1653 | } | |
1654 | /* acpi=strict disables out-of-spec workarounds */ | |
1655 | else if (strcmp(arg, "strict") == 0) { | |
1656 | acpi_strict = 1; | |
1657 | } | |
1658 | /* Limit ACPI just to boot-time to enable HT */ | |
1659 | else if (strcmp(arg, "ht") == 0) { | |
1660 | if (!acpi_force) | |
1661 | disable_acpi(); | |
1662 | acpi_ht = 1; | |
1663 | } | |
1664 | /* "acpi=noirq" disables ACPI interrupt routing */ | |
1665 | else if (strcmp(arg, "noirq") == 0) { | |
1666 | acpi_noirq_set(); | |
1667 | } else { | |
1668 | /* Core will printk when we return error. */ | |
1669 | return -EINVAL; | |
1670 | } | |
1671 | return 0; | |
1672 | } | |
1673 | early_param("acpi", parse_acpi); | |
1674 | ||
1675 | /* FIXME: Using pci= for an ACPI parameter is a travesty. */ | |
1676 | static int __init parse_pci(char *arg) | |
1677 | { | |
1678 | if (arg && strcmp(arg, "noacpi") == 0) | |
1679 | acpi_disable_pci(); | |
1680 | return 0; | |
1681 | } | |
1682 | early_param("pci", parse_pci); | |
1683 | ||
1684 | #ifdef CONFIG_X86_IO_APIC | |
1685 | static int __init parse_acpi_skip_timer_override(char *arg) | |
1686 | { | |
1687 | acpi_skip_timer_override = 1; | |
1688 | return 0; | |
1689 | } | |
1690 | early_param("acpi_skip_timer_override", parse_acpi_skip_timer_override); | |
fa18f477 AK |
1691 | |
1692 | static int __init parse_acpi_use_timer_override(char *arg) | |
1693 | { | |
1694 | acpi_use_timer_override = 1; | |
1695 | return 0; | |
1696 | } | |
1697 | early_param("acpi_use_timer_override", parse_acpi_use_timer_override); | |
1a3f239d RR |
1698 | #endif /* CONFIG_X86_IO_APIC */ |
1699 | ||
1700 | static int __init setup_acpi_sci(char *s) | |
1701 | { | |
1702 | if (!s) | |
1703 | return -EINVAL; | |
1704 | if (!strcmp(s, "edge")) | |
5f3b1a8b AS |
1705 | acpi_sci_flags = ACPI_MADT_TRIGGER_EDGE | |
1706 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1707 | else if (!strcmp(s, "level")) |
5f3b1a8b AS |
1708 | acpi_sci_flags = ACPI_MADT_TRIGGER_LEVEL | |
1709 | (acpi_sci_flags & ~ACPI_MADT_TRIGGER_MASK); | |
1a3f239d | 1710 | else if (!strcmp(s, "high")) |
5f3b1a8b AS |
1711 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_HIGH | |
1712 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d | 1713 | else if (!strcmp(s, "low")) |
5f3b1a8b AS |
1714 | acpi_sci_flags = ACPI_MADT_POLARITY_ACTIVE_LOW | |
1715 | (acpi_sci_flags & ~ACPI_MADT_POLARITY_MASK); | |
1a3f239d RR |
1716 | else |
1717 | return -EINVAL; | |
1718 | return 0; | |
1719 | } | |
1720 | early_param("acpi_sci", setup_acpi_sci); | |
d0a9081b AM |
1721 | |
1722 | int __acpi_acquire_global_lock(unsigned int *lock) | |
1723 | { | |
1724 | unsigned int old, new, val; | |
1725 | do { | |
1726 | old = *lock; | |
1727 | new = (((old & ~0x3) + 2) + ((old >> 1) & 0x1)); | |
1728 | val = cmpxchg(lock, old, new); | |
1729 | } while (unlikely (val != old)); | |
1730 | return (new < 3) ? -1 : 0; | |
1731 | } | |
1732 | ||
1733 | int __acpi_release_global_lock(unsigned int *lock) | |
1734 | { | |
1735 | unsigned int old, new, val; | |
1736 | do { | |
1737 | old = *lock; | |
1738 | new = old & ~0x3; | |
1739 | val = cmpxchg(lock, old, new); | |
1740 | } while (unlikely (val != old)); | |
1741 | return old & 0x1; | |
1742 | } |