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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * This file contains work-arounds for x86 and x86_64 platform bugs. | |
3 | */ | |
1da177e4 LT |
4 | #include <linux/pci.h> |
5 | #include <linux/irq.h> | |
6 | ||
d54bd57d VP |
7 | #include <asm/hpet.h> |
8 | ||
1da177e4 LT |
9 | #if defined(CONFIG_X86_IO_APIC) && defined(CONFIG_SMP) && defined(CONFIG_PCI) |
10 | ||
a86f34b4 | 11 | static void __devinit quirk_intel_irqbalance(struct pci_dev *dev) |
1da177e4 LT |
12 | { |
13 | u8 config, rev; | |
9585ca02 | 14 | u16 word; |
1da177e4 LT |
15 | |
16 | /* BIOS may enable hardware IRQ balancing for | |
17 | * E7520/E7320/E7525(revision ID 0x9 and below) | |
18 | * based platforms. | |
19 | * Disable SW irqbalance/affinity on those platforms. | |
20 | */ | |
a86f34b4 | 21 | pci_read_config_byte(dev, PCI_CLASS_REVISION, &rev); |
1da177e4 LT |
22 | if (rev > 0x9) |
23 | return; | |
24 | ||
a86f34b4 AM |
25 | /* enable access to config space*/ |
26 | pci_read_config_byte(dev, 0xf4, &config); | |
27 | pci_write_config_byte(dev, 0xf4, config|0x2); | |
1da177e4 | 28 | |
9585ca02 MW |
29 | /* |
30 | * read xTPR register. We may not have a pci_dev for device 8 | |
31 | * because it might be hidden until the above write. | |
32 | */ | |
33 | pci_bus_read_config_word(dev->bus, PCI_DEVFN(8, 0), 0x4c, &word); | |
1da177e4 LT |
34 | |
35 | if (!(word & (1 << 13))) { | |
9ed88554 | 36 | dev_info(&dev->dev, "Intel E7520/7320/7525 detected; " |
37 | "disabling irq balancing and affinity\n"); | |
1da177e4 LT |
38 | #ifdef CONFIG_IRQBALANCE |
39 | irqbalance_disable(""); | |
40 | #endif | |
41 | noirqdebug_setup(""); | |
42 | #ifdef CONFIG_PROC_FS | |
43 | no_irq_affinity = 1; | |
44 | #endif | |
45 | } | |
46 | ||
a86f34b4 | 47 | /* put back the original value for config space*/ |
da9bb1d2 | 48 | if (!(config & 0x2)) |
a86f34b4 | 49 | pci_write_config_byte(dev, 0xf4, config); |
1da177e4 | 50 | } |
76492237 TG |
51 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7320_MCH, |
52 | quirk_intel_irqbalance); | |
53 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7525_MCH, | |
54 | quirk_intel_irqbalance); | |
55 | DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_E7520_MCH, | |
56 | quirk_intel_irqbalance); | |
1da177e4 | 57 | #endif |
d54bd57d VP |
58 | |
59 | #if defined(CONFIG_HPET_TIMER) | |
60 | unsigned long force_hpet_address; | |
61 | ||
bfe0c1cc VP |
62 | static enum { |
63 | NONE_FORCE_HPET_RESUME, | |
64 | OLD_ICH_FORCE_HPET_RESUME, | |
b196884e | 65 | ICH_FORCE_HPET_RESUME, |
d79a5f80 CC |
66 | VT8237_FORCE_HPET_RESUME, |
67 | NVIDIA_FORCE_HPET_RESUME, | |
e8aa4667 | 68 | ATI_FORCE_HPET_RESUME, |
bfe0c1cc VP |
69 | } force_hpet_resume_type; |
70 | ||
d54bd57d VP |
71 | static void __iomem *rcba_base; |
72 | ||
bfe0c1cc | 73 | static void ich_force_hpet_resume(void) |
d54bd57d VP |
74 | { |
75 | u32 val; | |
76 | ||
77 | if (!force_hpet_address) | |
78 | return; | |
79 | ||
80 | if (rcba_base == NULL) | |
81 | BUG(); | |
82 | ||
83 | /* read the Function Disable register, dword mode only */ | |
84 | val = readl(rcba_base + 0x3404); | |
85 | if (!(val & 0x80)) { | |
86 | /* HPET disabled in HPTC. Trying to enable */ | |
87 | writel(val | 0x80, rcba_base + 0x3404); | |
88 | } | |
89 | ||
90 | val = readl(rcba_base + 0x3404); | |
91 | if (!(val & 0x80)) | |
92 | BUG(); | |
93 | else | |
94 | printk(KERN_DEBUG "Force enabled HPET at resume\n"); | |
95 | ||
96 | return; | |
97 | } | |
98 | ||
99 | static void ich_force_enable_hpet(struct pci_dev *dev) | |
100 | { | |
101 | u32 val; | |
102 | u32 uninitialized_var(rcba); | |
103 | int err = 0; | |
104 | ||
105 | if (hpet_address || force_hpet_address) | |
106 | return; | |
107 | ||
108 | pci_read_config_dword(dev, 0xF0, &rcba); | |
109 | rcba &= 0xFFFFC000; | |
110 | if (rcba == 0) { | |
9ed88554 | 111 | dev_printk(KERN_DEBUG, &dev->dev, "RCBA disabled; " |
112 | "cannot force enable HPET\n"); | |
d54bd57d VP |
113 | return; |
114 | } | |
115 | ||
116 | /* use bits 31:14, 16 kB aligned */ | |
117 | rcba_base = ioremap_nocache(rcba, 0x4000); | |
118 | if (rcba_base == NULL) { | |
9ed88554 | 119 | dev_printk(KERN_DEBUG, &dev->dev, "ioremap failed; " |
120 | "cannot force enable HPET\n"); | |
d54bd57d VP |
121 | return; |
122 | } | |
123 | ||
124 | /* read the Function Disable register, dword mode only */ | |
125 | val = readl(rcba_base + 0x3404); | |
126 | ||
127 | if (val & 0x80) { | |
128 | /* HPET is enabled in HPTC. Just not reported by BIOS */ | |
129 | val = val & 0x3; | |
130 | force_hpet_address = 0xFED00000 | (val << 12); | |
9ed88554 | 131 | dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at " |
132 | "0x%lx\n", force_hpet_address); | |
d54bd57d VP |
133 | iounmap(rcba_base); |
134 | return; | |
135 | } | |
136 | ||
137 | /* HPET disabled in HPTC. Trying to enable */ | |
138 | writel(val | 0x80, rcba_base + 0x3404); | |
139 | ||
140 | val = readl(rcba_base + 0x3404); | |
141 | if (!(val & 0x80)) { | |
142 | err = 1; | |
143 | } else { | |
144 | val = val & 0x3; | |
145 | force_hpet_address = 0xFED00000 | (val << 12); | |
146 | } | |
147 | ||
148 | if (err) { | |
149 | force_hpet_address = 0; | |
150 | iounmap(rcba_base); | |
9ed88554 | 151 | dev_printk(KERN_DEBUG, &dev->dev, |
152 | "Failed to force enable HPET\n"); | |
d54bd57d | 153 | } else { |
bfe0c1cc | 154 | force_hpet_resume_type = ICH_FORCE_HPET_RESUME; |
9ed88554 | 155 | dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at " |
156 | "0x%lx\n", force_hpet_address); | |
d54bd57d VP |
157 | } |
158 | } | |
159 | ||
160 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB2_0, | |
76492237 | 161 | ich_force_enable_hpet); |
74e411cb KO |
162 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_0, |
163 | ich_force_enable_hpet); | |
d54bd57d | 164 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH6_1, |
76492237 | 165 | ich_force_enable_hpet); |
ed6fb174 | 166 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_0, |
76492237 | 167 | ich_force_enable_hpet); |
d54bd57d | 168 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_1, |
76492237 | 169 | ich_force_enable_hpet); |
d54bd57d | 170 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH7_31, |
76492237 | 171 | ich_force_enable_hpet); |
d54bd57d | 172 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH8_1, |
76492237 | 173 | ich_force_enable_hpet); |
dff244af AJS |
174 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ICH9_7, |
175 | ich_force_enable_hpet); | |
bfe0c1cc VP |
176 | |
177 | ||
178 | static struct pci_dev *cached_dev; | |
179 | ||
7c4728f4 TG |
180 | static void hpet_print_force_info(void) |
181 | { | |
182 | printk(KERN_INFO "HPET not enabled in BIOS. " | |
183 | "You might try hpet=force boot option\n"); | |
184 | } | |
185 | ||
bfe0c1cc VP |
186 | static void old_ich_force_hpet_resume(void) |
187 | { | |
188 | u32 val; | |
189 | u32 uninitialized_var(gen_cntl); | |
190 | ||
191 | if (!force_hpet_address || !cached_dev) | |
192 | return; | |
193 | ||
194 | pci_read_config_dword(cached_dev, 0xD0, &gen_cntl); | |
195 | gen_cntl &= (~(0x7 << 15)); | |
196 | gen_cntl |= (0x4 << 15); | |
197 | ||
198 | pci_write_config_dword(cached_dev, 0xD0, gen_cntl); | |
199 | pci_read_config_dword(cached_dev, 0xD0, &gen_cntl); | |
200 | val = gen_cntl >> 15; | |
201 | val &= 0x7; | |
202 | if (val == 0x4) | |
203 | printk(KERN_DEBUG "Force enabled HPET at resume\n"); | |
204 | else | |
205 | BUG(); | |
206 | } | |
207 | ||
208 | static void old_ich_force_enable_hpet(struct pci_dev *dev) | |
209 | { | |
210 | u32 val; | |
211 | u32 uninitialized_var(gen_cntl); | |
212 | ||
213 | if (hpet_address || force_hpet_address) | |
214 | return; | |
215 | ||
216 | pci_read_config_dword(dev, 0xD0, &gen_cntl); | |
217 | /* | |
218 | * Bit 17 is HPET enable bit. | |
219 | * Bit 16:15 control the HPET base address. | |
220 | */ | |
221 | val = gen_cntl >> 15; | |
222 | val &= 0x7; | |
223 | if (val & 0x4) { | |
224 | val &= 0x3; | |
225 | force_hpet_address = 0xFED00000 | (val << 12); | |
9ed88554 | 226 | dev_printk(KERN_DEBUG, &dev->dev, "HPET at 0x%lx\n", |
227 | force_hpet_address); | |
bfe0c1cc VP |
228 | return; |
229 | } | |
230 | ||
231 | /* | |
232 | * HPET is disabled. Trying enabling at FED00000 and check | |
233 | * whether it sticks | |
234 | */ | |
235 | gen_cntl &= (~(0x7 << 15)); | |
236 | gen_cntl |= (0x4 << 15); | |
237 | pci_write_config_dword(dev, 0xD0, gen_cntl); | |
238 | ||
239 | pci_read_config_dword(dev, 0xD0, &gen_cntl); | |
240 | ||
241 | val = gen_cntl >> 15; | |
242 | val &= 0x7; | |
243 | if (val & 0x4) { | |
244 | /* HPET is enabled in HPTC. Just not reported by BIOS */ | |
245 | val &= 0x3; | |
246 | force_hpet_address = 0xFED00000 | (val << 12); | |
9ed88554 | 247 | dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at " |
248 | "0x%lx\n", force_hpet_address); | |
32a2da64 | 249 | cached_dev = dev; |
bfe0c1cc VP |
250 | force_hpet_resume_type = OLD_ICH_FORCE_HPET_RESUME; |
251 | return; | |
252 | } | |
253 | ||
9ed88554 | 254 | dev_printk(KERN_DEBUG, &dev->dev, "Failed to force enable HPET\n"); |
bfe0c1cc VP |
255 | } |
256 | ||
158ad326 US |
257 | /* |
258 | * Undocumented chipset features. Make sure that the user enforced | |
259 | * this. | |
260 | */ | |
261 | static void old_ich_force_enable_hpet_user(struct pci_dev *dev) | |
262 | { | |
263 | if (hpet_force_user) | |
264 | old_ich_force_enable_hpet(dev); | |
7c4728f4 TG |
265 | else |
266 | hpet_print_force_info(); | |
158ad326 US |
267 | } |
268 | ||
4c2a997c JB |
269 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, |
270 | old_ich_force_enable_hpet_user); | |
158ad326 US |
271 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_0, |
272 | old_ich_force_enable_hpet_user); | |
273 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801CA_12, | |
274 | old_ich_force_enable_hpet_user); | |
275 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_0, | |
276 | old_ich_force_enable_hpet_user); | |
277 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801DB_12, | |
278 | old_ich_force_enable_hpet_user); | |
bfe0c1cc | 279 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_0, |
76492237 | 280 | old_ich_force_enable_hpet); |
bfe0c1cc | 281 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801EB_12, |
76492237 | 282 | old_ich_force_enable_hpet); |
bfe0c1cc | 283 | |
b196884e US |
284 | |
285 | static void vt8237_force_hpet_resume(void) | |
286 | { | |
287 | u32 val; | |
288 | ||
289 | if (!force_hpet_address || !cached_dev) | |
290 | return; | |
291 | ||
292 | val = 0xfed00000 | 0x80; | |
293 | pci_write_config_dword(cached_dev, 0x68, val); | |
294 | ||
295 | pci_read_config_dword(cached_dev, 0x68, &val); | |
296 | if (val & 0x80) | |
297 | printk(KERN_DEBUG "Force enabled HPET at resume\n"); | |
298 | else | |
299 | BUG(); | |
300 | } | |
301 | ||
302 | static void vt8237_force_enable_hpet(struct pci_dev *dev) | |
303 | { | |
304 | u32 uninitialized_var(val); | |
305 | ||
7c4728f4 TG |
306 | if (hpet_address || force_hpet_address) |
307 | return; | |
308 | ||
309 | if (!hpet_force_user) { | |
310 | hpet_print_force_info(); | |
b196884e | 311 | return; |
7c4728f4 | 312 | } |
b196884e US |
313 | |
314 | pci_read_config_dword(dev, 0x68, &val); | |
315 | /* | |
316 | * Bit 7 is HPET enable bit. | |
317 | * Bit 31:10 is HPET base address (contrary to what datasheet claims) | |
318 | */ | |
319 | if (val & 0x80) { | |
320 | force_hpet_address = (val & ~0x3ff); | |
9ed88554 | 321 | dev_printk(KERN_DEBUG, &dev->dev, "HPET at 0x%lx\n", |
322 | force_hpet_address); | |
b196884e US |
323 | return; |
324 | } | |
325 | ||
326 | /* | |
327 | * HPET is disabled. Trying enabling at FED00000 and check | |
328 | * whether it sticks | |
329 | */ | |
330 | val = 0xfed00000 | 0x80; | |
331 | pci_write_config_dword(dev, 0x68, val); | |
332 | ||
333 | pci_read_config_dword(dev, 0x68, &val); | |
334 | if (val & 0x80) { | |
335 | force_hpet_address = (val & ~0x3ff); | |
9ed88554 | 336 | dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at " |
337 | "0x%lx\n", force_hpet_address); | |
b196884e US |
338 | cached_dev = dev; |
339 | force_hpet_resume_type = VT8237_FORCE_HPET_RESUME; | |
340 | return; | |
341 | } | |
342 | ||
9ed88554 | 343 | dev_printk(KERN_DEBUG, &dev->dev, "Failed to force enable HPET\n"); |
b196884e US |
344 | } |
345 | ||
346 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8235, | |
347 | vt8237_force_enable_hpet); | |
348 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_8237, | |
349 | vt8237_force_enable_hpet); | |
350 | ||
e8aa4667 AH |
351 | static void ati_force_hpet_resume(void) |
352 | { | |
353 | pci_write_config_dword(cached_dev, 0x14, 0xfed00000); | |
354 | printk(KERN_DEBUG "Force enabled HPET at resume\n"); | |
355 | } | |
356 | ||
357 | static void ati_force_enable_hpet(struct pci_dev *dev) | |
358 | { | |
359 | u32 uninitialized_var(val); | |
360 | ||
7c4728f4 TG |
361 | if (hpet_address || force_hpet_address) |
362 | return; | |
363 | ||
364 | if (!hpet_force_user) { | |
365 | hpet_print_force_info(); | |
e8aa4667 | 366 | return; |
7c4728f4 | 367 | } |
e8aa4667 AH |
368 | |
369 | pci_write_config_dword(dev, 0x14, 0xfed00000); | |
370 | pci_read_config_dword(dev, 0x14, &val); | |
371 | force_hpet_address = val; | |
372 | force_hpet_resume_type = ATI_FORCE_HPET_RESUME; | |
373 | dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at 0x%lx\n", | |
374 | force_hpet_address); | |
375 | cached_dev = dev; | |
376 | return; | |
377 | } | |
378 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS, | |
379 | ati_force_enable_hpet); | |
380 | ||
d79a5f80 CC |
381 | /* |
382 | * Undocumented chipset feature taken from LinuxBIOS. | |
383 | */ | |
384 | static void nvidia_force_hpet_resume(void) | |
385 | { | |
386 | pci_write_config_dword(cached_dev, 0x44, 0xfed00001); | |
387 | printk(KERN_DEBUG "Force enabled HPET at resume\n"); | |
388 | } | |
389 | ||
390 | static void nvidia_force_enable_hpet(struct pci_dev *dev) | |
391 | { | |
392 | u32 uninitialized_var(val); | |
393 | ||
7c4728f4 TG |
394 | if (hpet_address || force_hpet_address) |
395 | return; | |
396 | ||
397 | if (!hpet_force_user) { | |
398 | hpet_print_force_info(); | |
d79a5f80 | 399 | return; |
7c4728f4 | 400 | } |
d79a5f80 CC |
401 | |
402 | pci_write_config_dword(dev, 0x44, 0xfed00001); | |
403 | pci_read_config_dword(dev, 0x44, &val); | |
404 | force_hpet_address = val & 0xfffffffe; | |
405 | force_hpet_resume_type = NVIDIA_FORCE_HPET_RESUME; | |
9ed88554 | 406 | dev_printk(KERN_DEBUG, &dev->dev, "Force enabled HPET at 0x%lx\n", |
d79a5f80 CC |
407 | force_hpet_address); |
408 | cached_dev = dev; | |
409 | return; | |
410 | } | |
411 | ||
412 | /* ISA Bridges */ | |
413 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0050, | |
414 | nvidia_force_enable_hpet); | |
415 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0051, | |
416 | nvidia_force_enable_hpet); | |
b196884e | 417 | |
1b82ba6e | 418 | /* LPC bridges */ |
96bcf458 ZL |
419 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0260, |
420 | nvidia_force_enable_hpet); | |
1b82ba6e CC |
421 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0360, |
422 | nvidia_force_enable_hpet); | |
423 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0361, | |
424 | nvidia_force_enable_hpet); | |
425 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0362, | |
426 | nvidia_force_enable_hpet); | |
427 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0363, | |
428 | nvidia_force_enable_hpet); | |
429 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0364, | |
430 | nvidia_force_enable_hpet); | |
431 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0365, | |
432 | nvidia_force_enable_hpet); | |
433 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0366, | |
434 | nvidia_force_enable_hpet); | |
435 | DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_NVIDIA, 0x0367, | |
436 | nvidia_force_enable_hpet); | |
437 | ||
bfe0c1cc VP |
438 | void force_hpet_resume(void) |
439 | { | |
440 | switch (force_hpet_resume_type) { | |
4a5a77d1 HH |
441 | case ICH_FORCE_HPET_RESUME: |
442 | ich_force_hpet_resume(); | |
443 | return; | |
444 | case OLD_ICH_FORCE_HPET_RESUME: | |
445 | old_ich_force_hpet_resume(); | |
446 | return; | |
447 | case VT8237_FORCE_HPET_RESUME: | |
448 | vt8237_force_hpet_resume(); | |
449 | return; | |
450 | case NVIDIA_FORCE_HPET_RESUME: | |
451 | nvidia_force_hpet_resume(); | |
452 | return; | |
e8aa4667 AH |
453 | case ATI_FORCE_HPET_RESUME: |
454 | ati_force_hpet_resume(); | |
455 | return; | |
4a5a77d1 | 456 | default: |
bfe0c1cc VP |
457 | break; |
458 | } | |
459 | } | |
460 | ||
d54bd57d | 461 | #endif |