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907b28c5 CW |
1 | /* |
2 | * Copyright © 2013 Intel Corporation | |
3 | * | |
4 | * Permission is hereby granted, free of charge, to any person obtaining a | |
5 | * copy of this software and associated documentation files (the "Software"), | |
6 | * to deal in the Software without restriction, including without limitation | |
7 | * the rights to use, copy, modify, merge, publish, distribute, sublicense, | |
8 | * and/or sell copies of the Software, and to permit persons to whom the | |
9 | * Software is furnished to do so, subject to the following conditions: | |
10 | * | |
11 | * The above copyright notice and this permission notice (including the next | |
12 | * paragraph) shall be included in all copies or substantial portions of the | |
13 | * Software. | |
14 | * | |
15 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
16 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
17 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
18 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
19 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING | |
20 | * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS | |
21 | * IN THE SOFTWARE. | |
22 | */ | |
23 | ||
24 | #include "i915_drv.h" | |
25 | #include "intel_drv.h" | |
cf9d2890 | 26 | #include "i915_vgpu.h" |
907b28c5 | 27 | |
6daccb0b CW |
28 | #include <linux/pm_runtime.h> |
29 | ||
907b28c5 CW |
30 | #define FORCEWAKE_ACK_TIMEOUT_MS 2 |
31 | ||
6af5d92f CW |
32 | #define __raw_i915_read8(dev_priv__, reg__) readb((dev_priv__)->regs + (reg__)) |
33 | #define __raw_i915_write8(dev_priv__, reg__, val__) writeb(val__, (dev_priv__)->regs + (reg__)) | |
34 | ||
35 | #define __raw_i915_read16(dev_priv__, reg__) readw((dev_priv__)->regs + (reg__)) | |
36 | #define __raw_i915_write16(dev_priv__, reg__, val__) writew(val__, (dev_priv__)->regs + (reg__)) | |
37 | ||
38 | #define __raw_i915_read32(dev_priv__, reg__) readl((dev_priv__)->regs + (reg__)) | |
39 | #define __raw_i915_write32(dev_priv__, reg__, val__) writel(val__, (dev_priv__)->regs + (reg__)) | |
40 | ||
41 | #define __raw_i915_read64(dev_priv__, reg__) readq((dev_priv__)->regs + (reg__)) | |
42 | #define __raw_i915_write64(dev_priv__, reg__, val__) writeq(val__, (dev_priv__)->regs + (reg__)) | |
43 | ||
44 | #define __raw_posting_read(dev_priv__, reg__) (void)__raw_i915_read32(dev_priv__, reg__) | |
45 | ||
05a2fb15 MK |
46 | static const char * const forcewake_domain_names[] = { |
47 | "render", | |
48 | "blitter", | |
49 | "media", | |
50 | }; | |
51 | ||
52 | const char * | |
48c1026a | 53 | intel_uncore_forcewake_domain_to_str(const enum forcewake_domain_id id) |
05a2fb15 MK |
54 | { |
55 | BUILD_BUG_ON((sizeof(forcewake_domain_names)/sizeof(const char *)) != | |
56 | FW_DOMAIN_ID_COUNT); | |
57 | ||
58 | if (id >= 0 && id < FW_DOMAIN_ID_COUNT) | |
59 | return forcewake_domain_names[id]; | |
60 | ||
61 | WARN_ON(id); | |
62 | ||
63 | return "unknown"; | |
64 | } | |
65 | ||
b2ec142c PZ |
66 | static void |
67 | assert_device_not_suspended(struct drm_i915_private *dev_priv) | |
68 | { | |
2b387059 CW |
69 | WARN_ONCE(HAS_RUNTIME_PM(dev_priv->dev) && dev_priv->pm.suspended, |
70 | "Device suspended\n"); | |
b2ec142c | 71 | } |
6af5d92f | 72 | |
05a2fb15 MK |
73 | static inline void |
74 | fw_domain_reset(const struct intel_uncore_forcewake_domain *d) | |
907b28c5 | 75 | { |
f9b3927a | 76 | WARN_ON(d->reg_set == 0); |
05a2fb15 | 77 | __raw_i915_write32(d->i915, d->reg_set, d->val_reset); |
907b28c5 CW |
78 | } |
79 | ||
05a2fb15 MK |
80 | static inline void |
81 | fw_domain_arm_timer(struct intel_uncore_forcewake_domain *d) | |
907b28c5 | 82 | { |
05a2fb15 | 83 | mod_timer_pinned(&d->timer, jiffies + 1); |
907b28c5 CW |
84 | } |
85 | ||
05a2fb15 MK |
86 | static inline void |
87 | fw_domain_wait_ack_clear(const struct intel_uncore_forcewake_domain *d) | |
907b28c5 | 88 | { |
05a2fb15 MK |
89 | if (wait_for_atomic((__raw_i915_read32(d->i915, d->reg_ack) & |
90 | FORCEWAKE_KERNEL) == 0, | |
907b28c5 | 91 | FORCEWAKE_ACK_TIMEOUT_MS)) |
05a2fb15 MK |
92 | DRM_ERROR("%s: timed out waiting for forcewake ack to clear.\n", |
93 | intel_uncore_forcewake_domain_to_str(d->id)); | |
94 | } | |
907b28c5 | 95 | |
05a2fb15 MK |
96 | static inline void |
97 | fw_domain_get(const struct intel_uncore_forcewake_domain *d) | |
98 | { | |
99 | __raw_i915_write32(d->i915, d->reg_set, d->val_set); | |
100 | } | |
907b28c5 | 101 | |
05a2fb15 MK |
102 | static inline void |
103 | fw_domain_wait_ack(const struct intel_uncore_forcewake_domain *d) | |
104 | { | |
105 | if (wait_for_atomic((__raw_i915_read32(d->i915, d->reg_ack) & | |
106 | FORCEWAKE_KERNEL), | |
907b28c5 | 107 | FORCEWAKE_ACK_TIMEOUT_MS)) |
05a2fb15 MK |
108 | DRM_ERROR("%s: timed out waiting for forcewake ack request.\n", |
109 | intel_uncore_forcewake_domain_to_str(d->id)); | |
110 | } | |
907b28c5 | 111 | |
05a2fb15 MK |
112 | static inline void |
113 | fw_domain_put(const struct intel_uncore_forcewake_domain *d) | |
114 | { | |
115 | __raw_i915_write32(d->i915, d->reg_set, d->val_clear); | |
907b28c5 CW |
116 | } |
117 | ||
05a2fb15 MK |
118 | static inline void |
119 | fw_domain_posting_read(const struct intel_uncore_forcewake_domain *d) | |
907b28c5 | 120 | { |
05a2fb15 MK |
121 | /* something from same cacheline, but not from the set register */ |
122 | if (d->reg_post) | |
123 | __raw_posting_read(d->i915, d->reg_post); | |
907b28c5 CW |
124 | } |
125 | ||
05a2fb15 | 126 | static void |
48c1026a | 127 | fw_domains_get(struct drm_i915_private *dev_priv, enum forcewake_domains fw_domains) |
907b28c5 | 128 | { |
05a2fb15 | 129 | struct intel_uncore_forcewake_domain *d; |
48c1026a | 130 | enum forcewake_domain_id id; |
907b28c5 | 131 | |
05a2fb15 MK |
132 | for_each_fw_domain_mask(d, fw_domains, dev_priv, id) { |
133 | fw_domain_wait_ack_clear(d); | |
134 | fw_domain_get(d); | |
05a2fb15 MK |
135 | fw_domain_wait_ack(d); |
136 | } | |
137 | } | |
907b28c5 | 138 | |
05a2fb15 | 139 | static void |
48c1026a | 140 | fw_domains_put(struct drm_i915_private *dev_priv, enum forcewake_domains fw_domains) |
05a2fb15 MK |
141 | { |
142 | struct intel_uncore_forcewake_domain *d; | |
48c1026a | 143 | enum forcewake_domain_id id; |
907b28c5 | 144 | |
05a2fb15 MK |
145 | for_each_fw_domain_mask(d, fw_domains, dev_priv, id) { |
146 | fw_domain_put(d); | |
147 | fw_domain_posting_read(d); | |
148 | } | |
149 | } | |
907b28c5 | 150 | |
05a2fb15 MK |
151 | static void |
152 | fw_domains_posting_read(struct drm_i915_private *dev_priv) | |
153 | { | |
154 | struct intel_uncore_forcewake_domain *d; | |
48c1026a | 155 | enum forcewake_domain_id id; |
05a2fb15 MK |
156 | |
157 | /* No need to do for all, just do for first found */ | |
158 | for_each_fw_domain(d, dev_priv, id) { | |
159 | fw_domain_posting_read(d); | |
160 | break; | |
161 | } | |
162 | } | |
163 | ||
164 | static void | |
48c1026a | 165 | fw_domains_reset(struct drm_i915_private *dev_priv, enum forcewake_domains fw_domains) |
05a2fb15 MK |
166 | { |
167 | struct intel_uncore_forcewake_domain *d; | |
48c1026a | 168 | enum forcewake_domain_id id; |
05a2fb15 | 169 | |
3225b2f9 MK |
170 | if (dev_priv->uncore.fw_domains == 0) |
171 | return; | |
f9b3927a | 172 | |
05a2fb15 MK |
173 | for_each_fw_domain_mask(d, fw_domains, dev_priv, id) |
174 | fw_domain_reset(d); | |
175 | ||
176 | fw_domains_posting_read(dev_priv); | |
177 | } | |
178 | ||
179 | static void __gen6_gt_wait_for_thread_c0(struct drm_i915_private *dev_priv) | |
180 | { | |
181 | /* w/a for a sporadic read returning 0 by waiting for the GT | |
182 | * thread to wake up. | |
183 | */ | |
184 | if (wait_for_atomic_us((__raw_i915_read32(dev_priv, GEN6_GT_THREAD_STATUS_REG) & | |
185 | GEN6_GT_THREAD_STATUS_CORE_MASK) == 0, 500)) | |
186 | DRM_ERROR("GT thread status wait timed out\n"); | |
187 | } | |
188 | ||
189 | static void fw_domains_get_with_thread_status(struct drm_i915_private *dev_priv, | |
48c1026a | 190 | enum forcewake_domains fw_domains) |
05a2fb15 MK |
191 | { |
192 | fw_domains_get(dev_priv, fw_domains); | |
907b28c5 | 193 | |
05a2fb15 | 194 | /* WaRsForcewakeWaitTC0:snb,ivb,hsw,bdw,vlv */ |
c549f738 | 195 | __gen6_gt_wait_for_thread_c0(dev_priv); |
907b28c5 CW |
196 | } |
197 | ||
198 | static void gen6_gt_check_fifodbg(struct drm_i915_private *dev_priv) | |
199 | { | |
200 | u32 gtfifodbg; | |
6af5d92f CW |
201 | |
202 | gtfifodbg = __raw_i915_read32(dev_priv, GTFIFODBG); | |
90f256b5 VS |
203 | if (WARN(gtfifodbg, "GT wake FIFO error 0x%x\n", gtfifodbg)) |
204 | __raw_i915_write32(dev_priv, GTFIFODBG, gtfifodbg); | |
907b28c5 CW |
205 | } |
206 | ||
05a2fb15 | 207 | static void fw_domains_put_with_fifo(struct drm_i915_private *dev_priv, |
48c1026a | 208 | enum forcewake_domains fw_domains) |
907b28c5 | 209 | { |
05a2fb15 | 210 | fw_domains_put(dev_priv, fw_domains); |
907b28c5 CW |
211 | gen6_gt_check_fifodbg(dev_priv); |
212 | } | |
213 | ||
c32e3788 DG |
214 | static inline u32 fifo_free_entries(struct drm_i915_private *dev_priv) |
215 | { | |
216 | u32 count = __raw_i915_read32(dev_priv, GTFIFOCTL); | |
217 | ||
218 | return count & GT_FIFO_FREE_ENTRIES_MASK; | |
219 | } | |
220 | ||
907b28c5 CW |
221 | static int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv) |
222 | { | |
223 | int ret = 0; | |
224 | ||
5135d64b D |
225 | /* On VLV, FIFO will be shared by both SW and HW. |
226 | * So, we need to read the FREE_ENTRIES everytime */ | |
227 | if (IS_VALLEYVIEW(dev_priv->dev)) | |
c32e3788 | 228 | dev_priv->uncore.fifo_count = fifo_free_entries(dev_priv); |
5135d64b | 229 | |
907b28c5 CW |
230 | if (dev_priv->uncore.fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES) { |
231 | int loop = 500; | |
c32e3788 DG |
232 | u32 fifo = fifo_free_entries(dev_priv); |
233 | ||
907b28c5 CW |
234 | while (fifo <= GT_FIFO_NUM_RESERVED_ENTRIES && loop--) { |
235 | udelay(10); | |
c32e3788 | 236 | fifo = fifo_free_entries(dev_priv); |
907b28c5 CW |
237 | } |
238 | if (WARN_ON(loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES)) | |
239 | ++ret; | |
240 | dev_priv->uncore.fifo_count = fifo; | |
241 | } | |
242 | dev_priv->uncore.fifo_count--; | |
243 | ||
244 | return ret; | |
245 | } | |
246 | ||
59bad947 | 247 | static void intel_uncore_fw_release_timer(unsigned long arg) |
38cff0b1 | 248 | { |
b2cff0db CW |
249 | struct intel_uncore_forcewake_domain *domain = (void *)arg; |
250 | unsigned long irqflags; | |
38cff0b1 | 251 | |
b2cff0db | 252 | assert_device_not_suspended(domain->i915); |
38cff0b1 | 253 | |
b2cff0db CW |
254 | spin_lock_irqsave(&domain->i915->uncore.lock, irqflags); |
255 | if (WARN_ON(domain->wake_count == 0)) | |
256 | domain->wake_count++; | |
257 | ||
258 | if (--domain->wake_count == 0) | |
259 | domain->i915->uncore.funcs.force_wake_put(domain->i915, | |
260 | 1 << domain->id); | |
261 | ||
262 | spin_unlock_irqrestore(&domain->i915->uncore.lock, irqflags); | |
38cff0b1 ZW |
263 | } |
264 | ||
b2cff0db | 265 | void intel_uncore_forcewake_reset(struct drm_device *dev, bool restore) |
38cff0b1 | 266 | { |
b2cff0db | 267 | struct drm_i915_private *dev_priv = dev->dev_private; |
48c1026a | 268 | unsigned long irqflags; |
b2cff0db | 269 | struct intel_uncore_forcewake_domain *domain; |
48c1026a MK |
270 | int retry_count = 100; |
271 | enum forcewake_domain_id id; | |
272 | enum forcewake_domains fw = 0, active_domains; | |
38cff0b1 | 273 | |
b2cff0db CW |
274 | /* Hold uncore.lock across reset to prevent any register access |
275 | * with forcewake not set correctly. Wait until all pending | |
276 | * timers are run before holding. | |
277 | */ | |
278 | while (1) { | |
279 | active_domains = 0; | |
38cff0b1 | 280 | |
b2cff0db CW |
281 | for_each_fw_domain(domain, dev_priv, id) { |
282 | if (del_timer_sync(&domain->timer) == 0) | |
283 | continue; | |
38cff0b1 | 284 | |
59bad947 | 285 | intel_uncore_fw_release_timer((unsigned long)domain); |
b2cff0db | 286 | } |
aec347ab | 287 | |
b2cff0db | 288 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); |
b2ec142c | 289 | |
b2cff0db CW |
290 | for_each_fw_domain(domain, dev_priv, id) { |
291 | if (timer_pending(&domain->timer)) | |
292 | active_domains |= (1 << id); | |
293 | } | |
3123fcaf | 294 | |
b2cff0db CW |
295 | if (active_domains == 0) |
296 | break; | |
aec347ab | 297 | |
b2cff0db CW |
298 | if (--retry_count == 0) { |
299 | DRM_ERROR("Timed out waiting for forcewake timers to finish\n"); | |
300 | break; | |
301 | } | |
0294ae7b | 302 | |
b2cff0db CW |
303 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); |
304 | cond_resched(); | |
305 | } | |
0294ae7b | 306 | |
b2cff0db CW |
307 | WARN_ON(active_domains); |
308 | ||
309 | for_each_fw_domain(domain, dev_priv, id) | |
310 | if (domain->wake_count) | |
311 | fw |= 1 << id; | |
312 | ||
313 | if (fw) | |
314 | dev_priv->uncore.funcs.force_wake_put(dev_priv, fw); | |
ef46e0d2 | 315 | |
05a2fb15 | 316 | fw_domains_reset(dev_priv, FORCEWAKE_ALL); |
38cff0b1 | 317 | |
0294ae7b | 318 | if (restore) { /* If reset with a user forcewake, try to restore */ |
0294ae7b CW |
319 | if (fw) |
320 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fw); | |
321 | ||
322 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
323 | dev_priv->uncore.fifo_count = | |
c32e3788 | 324 | fifo_free_entries(dev_priv); |
0294ae7b CW |
325 | } |
326 | ||
b2cff0db | 327 | if (!restore) |
59bad947 | 328 | assert_forcewakes_inactive(dev_priv); |
b2cff0db | 329 | |
0294ae7b | 330 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); |
ef46e0d2 DV |
331 | } |
332 | ||
f9b3927a | 333 | static void intel_uncore_ellc_detect(struct drm_device *dev) |
907b28c5 CW |
334 | { |
335 | struct drm_i915_private *dev_priv = dev->dev_private; | |
336 | ||
e25dca86 DL |
337 | if ((IS_HASWELL(dev) || IS_BROADWELL(dev) || |
338 | INTEL_INFO(dev)->gen >= 9) && | |
2db59d53 | 339 | (__raw_i915_read32(dev_priv, HSW_EDRAM_PRESENT) & EDRAM_ENABLED)) { |
18ce3994 BW |
340 | /* The docs do not explain exactly how the calculation can be |
341 | * made. It is somewhat guessable, but for now, it's always | |
342 | * 128MB. | |
343 | * NB: We can't write IDICR yet because we do not have gt funcs | |
344 | * set up */ | |
345 | dev_priv->ellc_size = 128; | |
346 | DRM_INFO("Found %zuMB of eLLC\n", dev_priv->ellc_size); | |
347 | } | |
f9b3927a MK |
348 | } |
349 | ||
350 | static void __intel_uncore_early_sanitize(struct drm_device *dev, | |
351 | bool restore_forcewake) | |
352 | { | |
353 | struct drm_i915_private *dev_priv = dev->dev_private; | |
354 | ||
355 | if (HAS_FPGA_DBG_UNCLAIMED(dev)) | |
356 | __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); | |
907b28c5 | 357 | |
97058870 VS |
358 | /* clear out old GT FIFO errors */ |
359 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
360 | __raw_i915_write32(dev_priv, GTFIFODBG, | |
361 | __raw_i915_read32(dev_priv, GTFIFODBG)); | |
362 | ||
10018603 | 363 | intel_uncore_forcewake_reset(dev, restore_forcewake); |
521198a2 MK |
364 | } |
365 | ||
ed493883 ID |
366 | void intel_uncore_early_sanitize(struct drm_device *dev, bool restore_forcewake) |
367 | { | |
368 | __intel_uncore_early_sanitize(dev, restore_forcewake); | |
369 | i915_check_and_clear_faults(dev); | |
370 | } | |
371 | ||
521198a2 MK |
372 | void intel_uncore_sanitize(struct drm_device *dev) |
373 | { | |
907b28c5 CW |
374 | /* BIOS often leaves RC6 enabled, but disable it for hw init */ |
375 | intel_disable_gt_powersave(dev); | |
376 | } | |
377 | ||
59bad947 MK |
378 | /** |
379 | * intel_uncore_forcewake_get - grab forcewake domain references | |
380 | * @dev_priv: i915 device instance | |
381 | * @fw_domains: forcewake domains to get reference on | |
382 | * | |
383 | * This function can be used get GT's forcewake domain references. | |
384 | * Normal register access will handle the forcewake domains automatically. | |
385 | * However if some sequence requires the GT to not power down a particular | |
386 | * forcewake domains this function should be called at the beginning of the | |
387 | * sequence. And subsequently the reference should be dropped by symmetric | |
388 | * call to intel_unforce_forcewake_put(). Usually caller wants all the domains | |
389 | * to be kept awake so the @fw_domains would be then FORCEWAKE_ALL. | |
907b28c5 | 390 | */ |
59bad947 | 391 | void intel_uncore_forcewake_get(struct drm_i915_private *dev_priv, |
48c1026a | 392 | enum forcewake_domains fw_domains) |
907b28c5 CW |
393 | { |
394 | unsigned long irqflags; | |
b2cff0db | 395 | struct intel_uncore_forcewake_domain *domain; |
48c1026a | 396 | enum forcewake_domain_id id; |
907b28c5 | 397 | |
ab484f8f BW |
398 | if (!dev_priv->uncore.funcs.force_wake_get) |
399 | return; | |
400 | ||
6daccb0b | 401 | WARN_ON(dev_priv->pm.suspended); |
c8c8fb33 | 402 | |
b2cff0db CW |
403 | fw_domains &= dev_priv->uncore.fw_domains; |
404 | ||
6daccb0b | 405 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); |
38cff0b1 | 406 | |
b2cff0db CW |
407 | for_each_fw_domain_mask(domain, fw_domains, dev_priv, id) { |
408 | if (domain->wake_count++) | |
409 | fw_domains &= ~(1 << id); | |
6daccb0b | 410 | } |
940aece4 | 411 | |
b2cff0db CW |
412 | if (fw_domains) |
413 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_domains); | |
414 | ||
907b28c5 CW |
415 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); |
416 | } | |
417 | ||
59bad947 MK |
418 | /** |
419 | * intel_uncore_forcewake_put - release a forcewake domain reference | |
420 | * @dev_priv: i915 device instance | |
421 | * @fw_domains: forcewake domains to put references | |
422 | * | |
423 | * This function drops the device-level forcewakes for specified | |
424 | * domains obtained by intel_uncore_forcewake_get(). | |
907b28c5 | 425 | */ |
59bad947 | 426 | void intel_uncore_forcewake_put(struct drm_i915_private *dev_priv, |
48c1026a | 427 | enum forcewake_domains fw_domains) |
907b28c5 CW |
428 | { |
429 | unsigned long irqflags; | |
b2cff0db | 430 | struct intel_uncore_forcewake_domain *domain; |
48c1026a | 431 | enum forcewake_domain_id id; |
907b28c5 | 432 | |
ab484f8f BW |
433 | if (!dev_priv->uncore.funcs.force_wake_put) |
434 | return; | |
435 | ||
b2cff0db CW |
436 | fw_domains &= dev_priv->uncore.fw_domains; |
437 | ||
6daccb0b CW |
438 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); |
439 | ||
b2cff0db CW |
440 | for_each_fw_domain_mask(domain, fw_domains, dev_priv, id) { |
441 | if (WARN_ON(domain->wake_count == 0)) | |
442 | continue; | |
443 | ||
444 | if (--domain->wake_count) | |
445 | continue; | |
446 | ||
447 | domain->wake_count++; | |
05a2fb15 | 448 | fw_domain_arm_timer(domain); |
aec347ab | 449 | } |
dc9fb09c | 450 | |
907b28c5 CW |
451 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); |
452 | } | |
453 | ||
59bad947 | 454 | void assert_forcewakes_inactive(struct drm_i915_private *dev_priv) |
e998c40f | 455 | { |
b2cff0db | 456 | struct intel_uncore_forcewake_domain *domain; |
48c1026a | 457 | enum forcewake_domain_id id; |
b2cff0db | 458 | |
e998c40f PZ |
459 | if (!dev_priv->uncore.funcs.force_wake_get) |
460 | return; | |
461 | ||
05a2fb15 | 462 | for_each_fw_domain(domain, dev_priv, id) |
b2cff0db | 463 | WARN_ON(domain->wake_count); |
e998c40f PZ |
464 | } |
465 | ||
907b28c5 CW |
466 | /* We give fast paths for the really cool registers */ |
467 | #define NEEDS_FORCE_WAKE(dev_priv, reg) \ | |
ab484f8f | 468 | ((reg) < 0x40000 && (reg) != FORCEWAKE) |
907b28c5 | 469 | |
1938e59a | 470 | #define REG_RANGE(reg, start, end) ((reg) >= (start) && (reg) < (end)) |
38fb6a40 | 471 | |
1938e59a D |
472 | #define FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg) \ |
473 | (REG_RANGE((reg), 0x2000, 0x4000) || \ | |
474 | REG_RANGE((reg), 0x5000, 0x8000) || \ | |
475 | REG_RANGE((reg), 0xB000, 0x12000) || \ | |
476 | REG_RANGE((reg), 0x2E000, 0x30000)) | |
477 | ||
478 | #define FORCEWAKE_VLV_MEDIA_RANGE_OFFSET(reg) \ | |
479 | (REG_RANGE((reg), 0x12000, 0x14000) || \ | |
480 | REG_RANGE((reg), 0x22000, 0x24000) || \ | |
481 | REG_RANGE((reg), 0x30000, 0x40000)) | |
482 | ||
483 | #define FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg) \ | |
484 | (REG_RANGE((reg), 0x2000, 0x4000) || \ | |
db5ff4ac | 485 | REG_RANGE((reg), 0x5200, 0x8000) || \ |
1938e59a | 486 | REG_RANGE((reg), 0x8300, 0x8500) || \ |
db5ff4ac | 487 | REG_RANGE((reg), 0xB000, 0xB480) || \ |
1938e59a D |
488 | REG_RANGE((reg), 0xE000, 0xE800)) |
489 | ||
490 | #define FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg) \ | |
491 | (REG_RANGE((reg), 0x8800, 0x8900) || \ | |
492 | REG_RANGE((reg), 0xD000, 0xD800) || \ | |
493 | REG_RANGE((reg), 0x12000, 0x14000) || \ | |
494 | REG_RANGE((reg), 0x1A000, 0x1C000) || \ | |
495 | REG_RANGE((reg), 0x1E800, 0x1EA00) || \ | |
db5ff4ac | 496 | REG_RANGE((reg), 0x30000, 0x38000)) |
1938e59a D |
497 | |
498 | #define FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg) \ | |
499 | (REG_RANGE((reg), 0x4000, 0x5000) || \ | |
500 | REG_RANGE((reg), 0x8000, 0x8300) || \ | |
501 | REG_RANGE((reg), 0x8500, 0x8600) || \ | |
502 | REG_RANGE((reg), 0x9000, 0xB000) || \ | |
db5ff4ac | 503 | REG_RANGE((reg), 0xF000, 0x10000)) |
38fb6a40 | 504 | |
4597a88a | 505 | #define FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg) \ |
8ee558d8 | 506 | REG_RANGE((reg), 0xB00, 0x2000) |
4597a88a ZW |
507 | |
508 | #define FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg) \ | |
8ee558d8 AG |
509 | (REG_RANGE((reg), 0x2000, 0x2700) || \ |
510 | REG_RANGE((reg), 0x3000, 0x4000) || \ | |
4597a88a | 511 | REG_RANGE((reg), 0x5200, 0x8000) || \ |
8ee558d8 | 512 | REG_RANGE((reg), 0x8140, 0x8160) || \ |
4597a88a ZW |
513 | REG_RANGE((reg), 0x8300, 0x8500) || \ |
514 | REG_RANGE((reg), 0x8C00, 0x8D00) || \ | |
515 | REG_RANGE((reg), 0xB000, 0xB480) || \ | |
8ee558d8 AG |
516 | REG_RANGE((reg), 0xE000, 0xE900) || \ |
517 | REG_RANGE((reg), 0x24400, 0x24800)) | |
4597a88a ZW |
518 | |
519 | #define FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg) \ | |
8ee558d8 AG |
520 | (REG_RANGE((reg), 0x8130, 0x8140) || \ |
521 | REG_RANGE((reg), 0x8800, 0x8A00) || \ | |
4597a88a ZW |
522 | REG_RANGE((reg), 0xD000, 0xD800) || \ |
523 | REG_RANGE((reg), 0x12000, 0x14000) || \ | |
524 | REG_RANGE((reg), 0x1A000, 0x1EA00) || \ | |
525 | REG_RANGE((reg), 0x30000, 0x40000)) | |
526 | ||
527 | #define FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg) \ | |
528 | REG_RANGE((reg), 0x9400, 0x9800) | |
529 | ||
530 | #define FORCEWAKE_GEN9_BLITTER_RANGE_OFFSET(reg) \ | |
531 | ((reg) < 0x40000 &&\ | |
532 | !FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg) && \ | |
533 | !FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg) && \ | |
534 | !FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg) && \ | |
535 | !FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) | |
536 | ||
907b28c5 CW |
537 | static void |
538 | ilk_dummy_write(struct drm_i915_private *dev_priv) | |
539 | { | |
540 | /* WaIssueDummyWriteToWakeupFromRC6:ilk Issue a dummy write to wake up | |
541 | * the chip from rc6 before touching it for real. MI_MODE is masked, | |
542 | * hence harmless to write 0 into. */ | |
6af5d92f | 543 | __raw_i915_write32(dev_priv, MI_MODE, 0); |
907b28c5 CW |
544 | } |
545 | ||
546 | static void | |
5978118c PZ |
547 | hsw_unclaimed_reg_debug(struct drm_i915_private *dev_priv, u32 reg, bool read, |
548 | bool before) | |
907b28c5 | 549 | { |
5978118c PZ |
550 | const char *op = read ? "reading" : "writing to"; |
551 | const char *when = before ? "before" : "after"; | |
552 | ||
553 | if (!i915.mmio_debug) | |
554 | return; | |
555 | ||
ab484f8f | 556 | if (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM) { |
5978118c PZ |
557 | WARN(1, "Unclaimed register detected %s %s register 0x%x\n", |
558 | when, op, reg); | |
6af5d92f | 559 | __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); |
48572edd | 560 | i915.mmio_debug--; /* Only report the first N failures */ |
907b28c5 CW |
561 | } |
562 | } | |
563 | ||
564 | static void | |
5978118c | 565 | hsw_unclaimed_reg_detect(struct drm_i915_private *dev_priv) |
907b28c5 | 566 | { |
48572edd CW |
567 | static bool mmio_debug_once = true; |
568 | ||
569 | if (i915.mmio_debug || !mmio_debug_once) | |
5978118c PZ |
570 | return; |
571 | ||
ab484f8f | 572 | if (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM) { |
48572edd CW |
573 | DRM_DEBUG("Unclaimed register detected, " |
574 | "enabling oneshot unclaimed register reporting. " | |
575 | "Please use i915.mmio_debug=N for more information.\n"); | |
6af5d92f | 576 | __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); |
48572edd | 577 | i915.mmio_debug = mmio_debug_once--; |
907b28c5 CW |
578 | } |
579 | } | |
580 | ||
51f67885 | 581 | #define GEN2_READ_HEADER(x) \ |
5d738795 | 582 | u##x val = 0; \ |
51f67885 | 583 | assert_device_not_suspended(dev_priv); |
5d738795 | 584 | |
51f67885 | 585 | #define GEN2_READ_FOOTER \ |
5d738795 BW |
586 | trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \ |
587 | return val | |
588 | ||
51f67885 | 589 | #define __gen2_read(x) \ |
0b274481 | 590 | static u##x \ |
51f67885 CW |
591 | gen2_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ |
592 | GEN2_READ_HEADER(x); \ | |
3967018e | 593 | val = __raw_i915_read##x(dev_priv, reg); \ |
51f67885 | 594 | GEN2_READ_FOOTER; \ |
3967018e BW |
595 | } |
596 | ||
597 | #define __gen5_read(x) \ | |
598 | static u##x \ | |
599 | gen5_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
51f67885 | 600 | GEN2_READ_HEADER(x); \ |
3967018e BW |
601 | ilk_dummy_write(dev_priv); \ |
602 | val = __raw_i915_read##x(dev_priv, reg); \ | |
51f67885 | 603 | GEN2_READ_FOOTER; \ |
3967018e BW |
604 | } |
605 | ||
51f67885 CW |
606 | __gen5_read(8) |
607 | __gen5_read(16) | |
608 | __gen5_read(32) | |
609 | __gen5_read(64) | |
610 | __gen2_read(8) | |
611 | __gen2_read(16) | |
612 | __gen2_read(32) | |
613 | __gen2_read(64) | |
614 | ||
615 | #undef __gen5_read | |
616 | #undef __gen2_read | |
617 | ||
618 | #undef GEN2_READ_FOOTER | |
619 | #undef GEN2_READ_HEADER | |
620 | ||
621 | #define GEN6_READ_HEADER(x) \ | |
622 | unsigned long irqflags; \ | |
623 | u##x val = 0; \ | |
624 | assert_device_not_suspended(dev_priv); \ | |
625 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags) | |
626 | ||
627 | #define GEN6_READ_FOOTER \ | |
628 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); \ | |
629 | trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \ | |
630 | return val | |
631 | ||
b2cff0db | 632 | static inline void __force_wake_get(struct drm_i915_private *dev_priv, |
48c1026a | 633 | enum forcewake_domains fw_domains) |
b2cff0db CW |
634 | { |
635 | struct intel_uncore_forcewake_domain *domain; | |
48c1026a | 636 | enum forcewake_domain_id id; |
b2cff0db CW |
637 | |
638 | if (WARN_ON(!fw_domains)) | |
639 | return; | |
640 | ||
641 | /* Ideally GCC would be constant-fold and eliminate this loop */ | |
05a2fb15 | 642 | for_each_fw_domain_mask(domain, fw_domains, dev_priv, id) { |
b2cff0db | 643 | if (domain->wake_count) { |
05a2fb15 | 644 | fw_domains &= ~(1 << id); |
b2cff0db CW |
645 | continue; |
646 | } | |
647 | ||
648 | domain->wake_count++; | |
05a2fb15 | 649 | fw_domain_arm_timer(domain); |
b2cff0db CW |
650 | } |
651 | ||
652 | if (fw_domains) | |
653 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_domains); | |
654 | } | |
655 | ||
3be0bf5a YZ |
656 | #define __vgpu_read(x) \ |
657 | static u##x \ | |
658 | vgpu_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
659 | GEN6_READ_HEADER(x); \ | |
660 | val = __raw_i915_read##x(dev_priv, reg); \ | |
661 | GEN6_READ_FOOTER; \ | |
662 | } | |
663 | ||
3967018e BW |
664 | #define __gen6_read(x) \ |
665 | static u##x \ | |
666 | gen6_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
51f67885 | 667 | GEN6_READ_HEADER(x); \ |
5978118c | 668 | hsw_unclaimed_reg_debug(dev_priv, reg, true, true); \ |
b2cff0db CW |
669 | if (NEEDS_FORCE_WAKE((dev_priv), (reg))) \ |
670 | __force_wake_get(dev_priv, FORCEWAKE_RENDER); \ | |
dc9fb09c | 671 | val = __raw_i915_read##x(dev_priv, reg); \ |
5978118c | 672 | hsw_unclaimed_reg_debug(dev_priv, reg, true, false); \ |
51f67885 | 673 | GEN6_READ_FOOTER; \ |
907b28c5 CW |
674 | } |
675 | ||
940aece4 D |
676 | #define __vlv_read(x) \ |
677 | static u##x \ | |
678 | vlv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
51f67885 | 679 | GEN6_READ_HEADER(x); \ |
b2cff0db CW |
680 | if (FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg)) \ |
681 | __force_wake_get(dev_priv, FORCEWAKE_RENDER); \ | |
682 | else if (FORCEWAKE_VLV_MEDIA_RANGE_OFFSET(reg)) \ | |
683 | __force_wake_get(dev_priv, FORCEWAKE_MEDIA); \ | |
6fe72865 | 684 | val = __raw_i915_read##x(dev_priv, reg); \ |
51f67885 | 685 | GEN6_READ_FOOTER; \ |
940aece4 D |
686 | } |
687 | ||
1938e59a D |
688 | #define __chv_read(x) \ |
689 | static u##x \ | |
690 | chv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
51f67885 | 691 | GEN6_READ_HEADER(x); \ |
b2cff0db CW |
692 | if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) \ |
693 | __force_wake_get(dev_priv, FORCEWAKE_RENDER); \ | |
694 | else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) \ | |
695 | __force_wake_get(dev_priv, FORCEWAKE_MEDIA); \ | |
696 | else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) \ | |
697 | __force_wake_get(dev_priv, \ | |
698 | FORCEWAKE_RENDER | FORCEWAKE_MEDIA); \ | |
1938e59a | 699 | val = __raw_i915_read##x(dev_priv, reg); \ |
51f67885 | 700 | GEN6_READ_FOOTER; \ |
1938e59a | 701 | } |
940aece4 | 702 | |
4597a88a ZW |
703 | #define SKL_NEEDS_FORCE_WAKE(dev_priv, reg) \ |
704 | ((reg) < 0x40000 && !FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg)) | |
705 | ||
706 | #define __gen9_read(x) \ | |
707 | static u##x \ | |
708 | gen9_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
48c1026a | 709 | enum forcewake_domains fw_engine; \ |
51f67885 | 710 | GEN6_READ_HEADER(x); \ |
b2cff0db CW |
711 | if (!SKL_NEEDS_FORCE_WAKE((dev_priv), (reg))) \ |
712 | fw_engine = 0; \ | |
713 | else if (FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg)) \ | |
714 | fw_engine = FORCEWAKE_RENDER; \ | |
715 | else if (FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg)) \ | |
716 | fw_engine = FORCEWAKE_MEDIA; \ | |
717 | else if (FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) \ | |
718 | fw_engine = FORCEWAKE_RENDER | FORCEWAKE_MEDIA; \ | |
719 | else \ | |
720 | fw_engine = FORCEWAKE_BLITTER; \ | |
721 | if (fw_engine) \ | |
722 | __force_wake_get(dev_priv, fw_engine); \ | |
723 | val = __raw_i915_read##x(dev_priv, reg); \ | |
51f67885 | 724 | GEN6_READ_FOOTER; \ |
4597a88a ZW |
725 | } |
726 | ||
3be0bf5a YZ |
727 | __vgpu_read(8) |
728 | __vgpu_read(16) | |
729 | __vgpu_read(32) | |
730 | __vgpu_read(64) | |
4597a88a ZW |
731 | __gen9_read(8) |
732 | __gen9_read(16) | |
733 | __gen9_read(32) | |
734 | __gen9_read(64) | |
1938e59a D |
735 | __chv_read(8) |
736 | __chv_read(16) | |
737 | __chv_read(32) | |
738 | __chv_read(64) | |
940aece4 D |
739 | __vlv_read(8) |
740 | __vlv_read(16) | |
741 | __vlv_read(32) | |
742 | __vlv_read(64) | |
3967018e BW |
743 | __gen6_read(8) |
744 | __gen6_read(16) | |
745 | __gen6_read(32) | |
746 | __gen6_read(64) | |
3967018e | 747 | |
4597a88a | 748 | #undef __gen9_read |
1938e59a | 749 | #undef __chv_read |
940aece4 | 750 | #undef __vlv_read |
3967018e | 751 | #undef __gen6_read |
3be0bf5a | 752 | #undef __vgpu_read |
51f67885 CW |
753 | #undef GEN6_READ_FOOTER |
754 | #undef GEN6_READ_HEADER | |
5d738795 | 755 | |
51f67885 | 756 | #define GEN2_WRITE_HEADER \ |
5d738795 | 757 | trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \ |
6f0ea9e2 | 758 | assert_device_not_suspended(dev_priv); \ |
907b28c5 | 759 | |
51f67885 | 760 | #define GEN2_WRITE_FOOTER |
0d965301 | 761 | |
51f67885 | 762 | #define __gen2_write(x) \ |
0b274481 | 763 | static void \ |
51f67885 CW |
764 | gen2_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ |
765 | GEN2_WRITE_HEADER; \ | |
4032ef43 | 766 | __raw_i915_write##x(dev_priv, reg, val); \ |
51f67885 | 767 | GEN2_WRITE_FOOTER; \ |
4032ef43 BW |
768 | } |
769 | ||
770 | #define __gen5_write(x) \ | |
771 | static void \ | |
772 | gen5_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
51f67885 | 773 | GEN2_WRITE_HEADER; \ |
4032ef43 BW |
774 | ilk_dummy_write(dev_priv); \ |
775 | __raw_i915_write##x(dev_priv, reg, val); \ | |
51f67885 | 776 | GEN2_WRITE_FOOTER; \ |
4032ef43 BW |
777 | } |
778 | ||
51f67885 CW |
779 | __gen5_write(8) |
780 | __gen5_write(16) | |
781 | __gen5_write(32) | |
782 | __gen5_write(64) | |
783 | __gen2_write(8) | |
784 | __gen2_write(16) | |
785 | __gen2_write(32) | |
786 | __gen2_write(64) | |
787 | ||
788 | #undef __gen5_write | |
789 | #undef __gen2_write | |
790 | ||
791 | #undef GEN2_WRITE_FOOTER | |
792 | #undef GEN2_WRITE_HEADER | |
793 | ||
794 | #define GEN6_WRITE_HEADER \ | |
795 | unsigned long irqflags; \ | |
796 | trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \ | |
797 | assert_device_not_suspended(dev_priv); \ | |
798 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags) | |
799 | ||
800 | #define GEN6_WRITE_FOOTER \ | |
801 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags) | |
802 | ||
4032ef43 BW |
803 | #define __gen6_write(x) \ |
804 | static void \ | |
805 | gen6_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
806 | u32 __fifo_ret = 0; \ | |
51f67885 | 807 | GEN6_WRITE_HEADER; \ |
4032ef43 BW |
808 | if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ |
809 | __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ | |
810 | } \ | |
811 | __raw_i915_write##x(dev_priv, reg, val); \ | |
812 | if (unlikely(__fifo_ret)) { \ | |
813 | gen6_gt_check_fifodbg(dev_priv); \ | |
814 | } \ | |
51f67885 | 815 | GEN6_WRITE_FOOTER; \ |
4032ef43 BW |
816 | } |
817 | ||
818 | #define __hsw_write(x) \ | |
819 | static void \ | |
820 | hsw_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
907b28c5 | 821 | u32 __fifo_ret = 0; \ |
51f67885 | 822 | GEN6_WRITE_HEADER; \ |
907b28c5 CW |
823 | if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ |
824 | __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ | |
825 | } \ | |
5978118c | 826 | hsw_unclaimed_reg_debug(dev_priv, reg, false, true); \ |
6af5d92f | 827 | __raw_i915_write##x(dev_priv, reg, val); \ |
907b28c5 CW |
828 | if (unlikely(__fifo_ret)) { \ |
829 | gen6_gt_check_fifodbg(dev_priv); \ | |
830 | } \ | |
5978118c PZ |
831 | hsw_unclaimed_reg_debug(dev_priv, reg, false, false); \ |
832 | hsw_unclaimed_reg_detect(dev_priv); \ | |
51f67885 | 833 | GEN6_WRITE_FOOTER; \ |
907b28c5 | 834 | } |
3967018e | 835 | |
3be0bf5a YZ |
836 | #define __vgpu_write(x) \ |
837 | static void vgpu_write##x(struct drm_i915_private *dev_priv, \ | |
838 | off_t reg, u##x val, bool trace) { \ | |
839 | GEN6_WRITE_HEADER; \ | |
840 | __raw_i915_write##x(dev_priv, reg, val); \ | |
841 | GEN6_WRITE_FOOTER; \ | |
842 | } | |
843 | ||
ab2aa47e BW |
844 | static const u32 gen8_shadowed_regs[] = { |
845 | FORCEWAKE_MT, | |
846 | GEN6_RPNSWREQ, | |
847 | GEN6_RC_VIDEO_FREQ, | |
848 | RING_TAIL(RENDER_RING_BASE), | |
849 | RING_TAIL(GEN6_BSD_RING_BASE), | |
850 | RING_TAIL(VEBOX_RING_BASE), | |
851 | RING_TAIL(BLT_RING_BASE), | |
852 | /* TODO: Other registers are not yet used */ | |
853 | }; | |
854 | ||
855 | static bool is_gen8_shadowed(struct drm_i915_private *dev_priv, u32 reg) | |
856 | { | |
857 | int i; | |
858 | for (i = 0; i < ARRAY_SIZE(gen8_shadowed_regs); i++) | |
859 | if (reg == gen8_shadowed_regs[i]) | |
860 | return true; | |
861 | ||
862 | return false; | |
863 | } | |
864 | ||
865 | #define __gen8_write(x) \ | |
866 | static void \ | |
867 | gen8_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
51f67885 | 868 | GEN6_WRITE_HEADER; \ |
66bc2cab | 869 | hsw_unclaimed_reg_debug(dev_priv, reg, false, true); \ |
b2cff0db CW |
870 | if (reg < 0x40000 && !is_gen8_shadowed(dev_priv, reg)) \ |
871 | __force_wake_get(dev_priv, FORCEWAKE_RENDER); \ | |
872 | __raw_i915_write##x(dev_priv, reg, val); \ | |
66bc2cab PZ |
873 | hsw_unclaimed_reg_debug(dev_priv, reg, false, false); \ |
874 | hsw_unclaimed_reg_detect(dev_priv); \ | |
51f67885 | 875 | GEN6_WRITE_FOOTER; \ |
ab2aa47e BW |
876 | } |
877 | ||
1938e59a D |
878 | #define __chv_write(x) \ |
879 | static void \ | |
880 | chv_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
1938e59a | 881 | bool shadowed = is_gen8_shadowed(dev_priv, reg); \ |
51f67885 | 882 | GEN6_WRITE_HEADER; \ |
1938e59a | 883 | if (!shadowed) { \ |
b2cff0db CW |
884 | if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) \ |
885 | __force_wake_get(dev_priv, FORCEWAKE_RENDER); \ | |
886 | else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) \ | |
887 | __force_wake_get(dev_priv, FORCEWAKE_MEDIA); \ | |
888 | else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) \ | |
889 | __force_wake_get(dev_priv, FORCEWAKE_RENDER | FORCEWAKE_MEDIA); \ | |
1938e59a | 890 | } \ |
1938e59a | 891 | __raw_i915_write##x(dev_priv, reg, val); \ |
51f67885 | 892 | GEN6_WRITE_FOOTER; \ |
1938e59a D |
893 | } |
894 | ||
7c859007 ZW |
895 | static const u32 gen9_shadowed_regs[] = { |
896 | RING_TAIL(RENDER_RING_BASE), | |
897 | RING_TAIL(GEN6_BSD_RING_BASE), | |
898 | RING_TAIL(VEBOX_RING_BASE), | |
899 | RING_TAIL(BLT_RING_BASE), | |
900 | FORCEWAKE_BLITTER_GEN9, | |
901 | FORCEWAKE_RENDER_GEN9, | |
902 | FORCEWAKE_MEDIA_GEN9, | |
903 | GEN6_RPNSWREQ, | |
904 | GEN6_RC_VIDEO_FREQ, | |
905 | /* TODO: Other registers are not yet used */ | |
906 | }; | |
907 | ||
908 | static bool is_gen9_shadowed(struct drm_i915_private *dev_priv, u32 reg) | |
909 | { | |
910 | int i; | |
911 | for (i = 0; i < ARRAY_SIZE(gen9_shadowed_regs); i++) | |
912 | if (reg == gen9_shadowed_regs[i]) | |
913 | return true; | |
914 | ||
915 | return false; | |
916 | } | |
917 | ||
4597a88a ZW |
918 | #define __gen9_write(x) \ |
919 | static void \ | |
920 | gen9_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, \ | |
921 | bool trace) { \ | |
48c1026a | 922 | enum forcewake_domains fw_engine; \ |
51f67885 | 923 | GEN6_WRITE_HEADER; \ |
b2cff0db CW |
924 | if (!SKL_NEEDS_FORCE_WAKE((dev_priv), (reg)) || \ |
925 | is_gen9_shadowed(dev_priv, reg)) \ | |
926 | fw_engine = 0; \ | |
927 | else if (FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg)) \ | |
928 | fw_engine = FORCEWAKE_RENDER; \ | |
929 | else if (FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg)) \ | |
930 | fw_engine = FORCEWAKE_MEDIA; \ | |
931 | else if (FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) \ | |
932 | fw_engine = FORCEWAKE_RENDER | FORCEWAKE_MEDIA; \ | |
933 | else \ | |
934 | fw_engine = FORCEWAKE_BLITTER; \ | |
935 | if (fw_engine) \ | |
936 | __force_wake_get(dev_priv, fw_engine); \ | |
937 | __raw_i915_write##x(dev_priv, reg, val); \ | |
51f67885 | 938 | GEN6_WRITE_FOOTER; \ |
4597a88a ZW |
939 | } |
940 | ||
941 | __gen9_write(8) | |
942 | __gen9_write(16) | |
943 | __gen9_write(32) | |
944 | __gen9_write(64) | |
1938e59a D |
945 | __chv_write(8) |
946 | __chv_write(16) | |
947 | __chv_write(32) | |
948 | __chv_write(64) | |
ab2aa47e BW |
949 | __gen8_write(8) |
950 | __gen8_write(16) | |
951 | __gen8_write(32) | |
952 | __gen8_write(64) | |
4032ef43 BW |
953 | __hsw_write(8) |
954 | __hsw_write(16) | |
955 | __hsw_write(32) | |
956 | __hsw_write(64) | |
957 | __gen6_write(8) | |
958 | __gen6_write(16) | |
959 | __gen6_write(32) | |
960 | __gen6_write(64) | |
3be0bf5a YZ |
961 | __vgpu_write(8) |
962 | __vgpu_write(16) | |
963 | __vgpu_write(32) | |
964 | __vgpu_write(64) | |
4032ef43 | 965 | |
4597a88a | 966 | #undef __gen9_write |
1938e59a | 967 | #undef __chv_write |
ab2aa47e | 968 | #undef __gen8_write |
4032ef43 BW |
969 | #undef __hsw_write |
970 | #undef __gen6_write | |
3be0bf5a | 971 | #undef __vgpu_write |
51f67885 CW |
972 | #undef GEN6_WRITE_FOOTER |
973 | #undef GEN6_WRITE_HEADER | |
907b28c5 | 974 | |
43d942a7 YZ |
975 | #define ASSIGN_WRITE_MMIO_VFUNCS(x) \ |
976 | do { \ | |
977 | dev_priv->uncore.funcs.mmio_writeb = x##_write8; \ | |
978 | dev_priv->uncore.funcs.mmio_writew = x##_write16; \ | |
979 | dev_priv->uncore.funcs.mmio_writel = x##_write32; \ | |
980 | dev_priv->uncore.funcs.mmio_writeq = x##_write64; \ | |
981 | } while (0) | |
982 | ||
983 | #define ASSIGN_READ_MMIO_VFUNCS(x) \ | |
984 | do { \ | |
985 | dev_priv->uncore.funcs.mmio_readb = x##_read8; \ | |
986 | dev_priv->uncore.funcs.mmio_readw = x##_read16; \ | |
987 | dev_priv->uncore.funcs.mmio_readl = x##_read32; \ | |
988 | dev_priv->uncore.funcs.mmio_readq = x##_read64; \ | |
989 | } while (0) | |
990 | ||
05a2fb15 MK |
991 | |
992 | static void fw_domain_init(struct drm_i915_private *dev_priv, | |
48c1026a MK |
993 | enum forcewake_domain_id domain_id, |
994 | u32 reg_set, u32 reg_ack) | |
05a2fb15 MK |
995 | { |
996 | struct intel_uncore_forcewake_domain *d; | |
997 | ||
998 | if (WARN_ON(domain_id >= FW_DOMAIN_ID_COUNT)) | |
999 | return; | |
1000 | ||
1001 | d = &dev_priv->uncore.fw_domain[domain_id]; | |
1002 | ||
1003 | WARN_ON(d->wake_count); | |
1004 | ||
1005 | d->wake_count = 0; | |
1006 | d->reg_set = reg_set; | |
1007 | d->reg_ack = reg_ack; | |
1008 | ||
1009 | if (IS_GEN6(dev_priv)) { | |
1010 | d->val_reset = 0; | |
1011 | d->val_set = FORCEWAKE_KERNEL; | |
1012 | d->val_clear = 0; | |
1013 | } else { | |
8543747c | 1014 | /* WaRsClearFWBitsAtReset:bdw,skl */ |
05a2fb15 MK |
1015 | d->val_reset = _MASKED_BIT_DISABLE(0xffff); |
1016 | d->val_set = _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL); | |
1017 | d->val_clear = _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL); | |
1018 | } | |
1019 | ||
1020 | if (IS_VALLEYVIEW(dev_priv)) | |
1021 | d->reg_post = FORCEWAKE_ACK_VLV; | |
1022 | else if (IS_GEN6(dev_priv) || IS_GEN7(dev_priv) || IS_GEN8(dev_priv)) | |
1023 | d->reg_post = ECOBUS; | |
1024 | else | |
1025 | d->reg_post = 0; | |
1026 | ||
1027 | d->i915 = dev_priv; | |
1028 | d->id = domain_id; | |
1029 | ||
59bad947 | 1030 | setup_timer(&d->timer, intel_uncore_fw_release_timer, (unsigned long)d); |
05a2fb15 MK |
1031 | |
1032 | dev_priv->uncore.fw_domains |= (1 << domain_id); | |
f9b3927a MK |
1033 | |
1034 | fw_domain_reset(d); | |
05a2fb15 MK |
1035 | } |
1036 | ||
f9b3927a | 1037 | static void intel_uncore_fw_domains_init(struct drm_device *dev) |
0b274481 BW |
1038 | { |
1039 | struct drm_i915_private *dev_priv = dev->dev_private; | |
0b274481 | 1040 | |
3225b2f9 MK |
1041 | if (INTEL_INFO(dev_priv->dev)->gen <= 5) |
1042 | return; | |
1043 | ||
38cff0b1 | 1044 | if (IS_GEN9(dev)) { |
05a2fb15 MK |
1045 | dev_priv->uncore.funcs.force_wake_get = fw_domains_get; |
1046 | dev_priv->uncore.funcs.force_wake_put = fw_domains_put; | |
1047 | fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER, | |
1048 | FORCEWAKE_RENDER_GEN9, | |
1049 | FORCEWAKE_ACK_RENDER_GEN9); | |
1050 | fw_domain_init(dev_priv, FW_DOMAIN_ID_BLITTER, | |
1051 | FORCEWAKE_BLITTER_GEN9, | |
1052 | FORCEWAKE_ACK_BLITTER_GEN9); | |
1053 | fw_domain_init(dev_priv, FW_DOMAIN_ID_MEDIA, | |
1054 | FORCEWAKE_MEDIA_GEN9, FORCEWAKE_ACK_MEDIA_GEN9); | |
38cff0b1 | 1055 | } else if (IS_VALLEYVIEW(dev)) { |
05a2fb15 | 1056 | dev_priv->uncore.funcs.force_wake_get = fw_domains_get; |
756c349d MK |
1057 | if (!IS_CHERRYVIEW(dev)) |
1058 | dev_priv->uncore.funcs.force_wake_put = | |
1059 | fw_domains_put_with_fifo; | |
1060 | else | |
1061 | dev_priv->uncore.funcs.force_wake_put = fw_domains_put; | |
05a2fb15 MK |
1062 | fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER, |
1063 | FORCEWAKE_VLV, FORCEWAKE_ACK_VLV); | |
1064 | fw_domain_init(dev_priv, FW_DOMAIN_ID_MEDIA, | |
1065 | FORCEWAKE_MEDIA_VLV, FORCEWAKE_ACK_MEDIA_VLV); | |
f98cd096 | 1066 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
05a2fb15 MK |
1067 | dev_priv->uncore.funcs.force_wake_get = |
1068 | fw_domains_get_with_thread_status; | |
1069 | dev_priv->uncore.funcs.force_wake_put = fw_domains_put; | |
1070 | fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER, | |
1071 | FORCEWAKE_MT, FORCEWAKE_ACK_HSW); | |
0b274481 BW |
1072 | } else if (IS_IVYBRIDGE(dev)) { |
1073 | u32 ecobus; | |
1074 | ||
1075 | /* IVB configs may use multi-threaded forcewake */ | |
1076 | ||
1077 | /* A small trick here - if the bios hasn't configured | |
1078 | * MT forcewake, and if the device is in RC6, then | |
1079 | * force_wake_mt_get will not wake the device and the | |
1080 | * ECOBUS read will return zero. Which will be | |
1081 | * (correctly) interpreted by the test below as MT | |
1082 | * forcewake being disabled. | |
1083 | */ | |
05a2fb15 MK |
1084 | dev_priv->uncore.funcs.force_wake_get = |
1085 | fw_domains_get_with_thread_status; | |
1086 | dev_priv->uncore.funcs.force_wake_put = | |
1087 | fw_domains_put_with_fifo; | |
1088 | ||
f9b3927a MK |
1089 | /* We need to init first for ECOBUS access and then |
1090 | * determine later if we want to reinit, in case of MT access is | |
6ea2556f MK |
1091 | * not working. In this stage we don't know which flavour this |
1092 | * ivb is, so it is better to reset also the gen6 fw registers | |
1093 | * before the ecobus check. | |
f9b3927a | 1094 | */ |
6ea2556f MK |
1095 | |
1096 | __raw_i915_write32(dev_priv, FORCEWAKE, 0); | |
1097 | __raw_posting_read(dev_priv, ECOBUS); | |
1098 | ||
05a2fb15 MK |
1099 | fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER, |
1100 | FORCEWAKE_MT, FORCEWAKE_MT_ACK); | |
f9b3927a | 1101 | |
0b274481 | 1102 | mutex_lock(&dev->struct_mutex); |
05a2fb15 | 1103 | fw_domains_get_with_thread_status(dev_priv, FORCEWAKE_ALL); |
0b274481 | 1104 | ecobus = __raw_i915_read32(dev_priv, ECOBUS); |
05a2fb15 | 1105 | fw_domains_put_with_fifo(dev_priv, FORCEWAKE_ALL); |
0b274481 BW |
1106 | mutex_unlock(&dev->struct_mutex); |
1107 | ||
05a2fb15 | 1108 | if (!(ecobus & FORCEWAKE_MT_ENABLE)) { |
0b274481 BW |
1109 | DRM_INFO("No MT forcewake available on Ivybridge, this can result in issues\n"); |
1110 | DRM_INFO("when using vblank-synced partial screen updates.\n"); | |
05a2fb15 MK |
1111 | fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER, |
1112 | FORCEWAKE, FORCEWAKE_ACK); | |
0b274481 BW |
1113 | } |
1114 | } else if (IS_GEN6(dev)) { | |
1115 | dev_priv->uncore.funcs.force_wake_get = | |
05a2fb15 | 1116 | fw_domains_get_with_thread_status; |
0b274481 | 1117 | dev_priv->uncore.funcs.force_wake_put = |
05a2fb15 MK |
1118 | fw_domains_put_with_fifo; |
1119 | fw_domain_init(dev_priv, FW_DOMAIN_ID_RENDER, | |
1120 | FORCEWAKE, FORCEWAKE_ACK); | |
0b274481 | 1121 | } |
3225b2f9 MK |
1122 | |
1123 | /* All future platforms are expected to require complex power gating */ | |
1124 | WARN_ON(dev_priv->uncore.fw_domains == 0); | |
f9b3927a MK |
1125 | } |
1126 | ||
1127 | void intel_uncore_init(struct drm_device *dev) | |
1128 | { | |
1129 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1130 | ||
cf9d2890 YZ |
1131 | i915_check_vgpu(dev); |
1132 | ||
f9b3927a MK |
1133 | intel_uncore_ellc_detect(dev); |
1134 | intel_uncore_fw_domains_init(dev); | |
1135 | __intel_uncore_early_sanitize(dev, false); | |
0b274481 | 1136 | |
3967018e | 1137 | switch (INTEL_INFO(dev)->gen) { |
ab2aa47e | 1138 | default: |
5f77eeb0 | 1139 | MISSING_CASE(INTEL_INFO(dev)->gen); |
4597a88a ZW |
1140 | return; |
1141 | case 9: | |
1142 | ASSIGN_WRITE_MMIO_VFUNCS(gen9); | |
1143 | ASSIGN_READ_MMIO_VFUNCS(gen9); | |
1144 | break; | |
1145 | case 8: | |
1938e59a | 1146 | if (IS_CHERRYVIEW(dev)) { |
43d942a7 YZ |
1147 | ASSIGN_WRITE_MMIO_VFUNCS(chv); |
1148 | ASSIGN_READ_MMIO_VFUNCS(chv); | |
1938e59a D |
1149 | |
1150 | } else { | |
43d942a7 YZ |
1151 | ASSIGN_WRITE_MMIO_VFUNCS(gen8); |
1152 | ASSIGN_READ_MMIO_VFUNCS(gen6); | |
1938e59a | 1153 | } |
ab2aa47e | 1154 | break; |
3967018e BW |
1155 | case 7: |
1156 | case 6: | |
4032ef43 | 1157 | if (IS_HASWELL(dev)) { |
43d942a7 | 1158 | ASSIGN_WRITE_MMIO_VFUNCS(hsw); |
4032ef43 | 1159 | } else { |
43d942a7 | 1160 | ASSIGN_WRITE_MMIO_VFUNCS(gen6); |
4032ef43 | 1161 | } |
940aece4 D |
1162 | |
1163 | if (IS_VALLEYVIEW(dev)) { | |
43d942a7 | 1164 | ASSIGN_READ_MMIO_VFUNCS(vlv); |
940aece4 | 1165 | } else { |
43d942a7 | 1166 | ASSIGN_READ_MMIO_VFUNCS(gen6); |
940aece4 | 1167 | } |
3967018e BW |
1168 | break; |
1169 | case 5: | |
43d942a7 YZ |
1170 | ASSIGN_WRITE_MMIO_VFUNCS(gen5); |
1171 | ASSIGN_READ_MMIO_VFUNCS(gen5); | |
3967018e BW |
1172 | break; |
1173 | case 4: | |
1174 | case 3: | |
1175 | case 2: | |
51f67885 CW |
1176 | ASSIGN_WRITE_MMIO_VFUNCS(gen2); |
1177 | ASSIGN_READ_MMIO_VFUNCS(gen2); | |
3967018e BW |
1178 | break; |
1179 | } | |
ed493883 | 1180 | |
3be0bf5a YZ |
1181 | if (intel_vgpu_active(dev)) { |
1182 | ASSIGN_WRITE_MMIO_VFUNCS(vgpu); | |
1183 | ASSIGN_READ_MMIO_VFUNCS(vgpu); | |
1184 | } | |
1185 | ||
ed493883 | 1186 | i915_check_and_clear_faults(dev); |
0b274481 | 1187 | } |
43d942a7 YZ |
1188 | #undef ASSIGN_WRITE_MMIO_VFUNCS |
1189 | #undef ASSIGN_READ_MMIO_VFUNCS | |
0b274481 BW |
1190 | |
1191 | void intel_uncore_fini(struct drm_device *dev) | |
1192 | { | |
0b274481 BW |
1193 | /* Paranoia: make sure we have disabled everything before we exit. */ |
1194 | intel_uncore_sanitize(dev); | |
0294ae7b | 1195 | intel_uncore_forcewake_reset(dev, false); |
0b274481 BW |
1196 | } |
1197 | ||
af76ae44 DL |
1198 | #define GEN_RANGE(l, h) GENMASK(h, l) |
1199 | ||
907b28c5 CW |
1200 | static const struct register_whitelist { |
1201 | uint64_t offset; | |
1202 | uint32_t size; | |
af76ae44 DL |
1203 | /* supported gens, 0x10 for 4, 0x30 for 4 and 5, etc. */ |
1204 | uint32_t gen_bitmask; | |
907b28c5 | 1205 | } whitelist[] = { |
c3f59a67 | 1206 | { RING_TIMESTAMP(RENDER_RING_BASE), 8, GEN_RANGE(4, 9) }, |
907b28c5 CW |
1207 | }; |
1208 | ||
1209 | int i915_reg_read_ioctl(struct drm_device *dev, | |
1210 | void *data, struct drm_file *file) | |
1211 | { | |
1212 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1213 | struct drm_i915_reg_read *reg = data; | |
1214 | struct register_whitelist const *entry = whitelist; | |
cf67c70f | 1215 | int i, ret = 0; |
907b28c5 CW |
1216 | |
1217 | for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) { | |
1218 | if (entry->offset == reg->offset && | |
1219 | (1 << INTEL_INFO(dev)->gen & entry->gen_bitmask)) | |
1220 | break; | |
1221 | } | |
1222 | ||
1223 | if (i == ARRAY_SIZE(whitelist)) | |
1224 | return -EINVAL; | |
1225 | ||
cf67c70f PZ |
1226 | intel_runtime_pm_get(dev_priv); |
1227 | ||
907b28c5 CW |
1228 | switch (entry->size) { |
1229 | case 8: | |
1230 | reg->val = I915_READ64(reg->offset); | |
1231 | break; | |
1232 | case 4: | |
1233 | reg->val = I915_READ(reg->offset); | |
1234 | break; | |
1235 | case 2: | |
1236 | reg->val = I915_READ16(reg->offset); | |
1237 | break; | |
1238 | case 1: | |
1239 | reg->val = I915_READ8(reg->offset); | |
1240 | break; | |
1241 | default: | |
5f77eeb0 | 1242 | MISSING_CASE(entry->size); |
cf67c70f PZ |
1243 | ret = -EINVAL; |
1244 | goto out; | |
907b28c5 CW |
1245 | } |
1246 | ||
cf67c70f PZ |
1247 | out: |
1248 | intel_runtime_pm_put(dev_priv); | |
1249 | return ret; | |
907b28c5 CW |
1250 | } |
1251 | ||
b6359918 MK |
1252 | int i915_get_reset_stats_ioctl(struct drm_device *dev, |
1253 | void *data, struct drm_file *file) | |
1254 | { | |
1255 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1256 | struct drm_i915_reset_stats *args = data; | |
1257 | struct i915_ctx_hang_stats *hs; | |
273497e5 | 1258 | struct intel_context *ctx; |
b6359918 MK |
1259 | int ret; |
1260 | ||
661df041 MK |
1261 | if (args->flags || args->pad) |
1262 | return -EINVAL; | |
1263 | ||
821d66dd | 1264 | if (args->ctx_id == DEFAULT_CONTEXT_HANDLE && !capable(CAP_SYS_ADMIN)) |
b6359918 MK |
1265 | return -EPERM; |
1266 | ||
1267 | ret = mutex_lock_interruptible(&dev->struct_mutex); | |
1268 | if (ret) | |
1269 | return ret; | |
1270 | ||
41bde553 BW |
1271 | ctx = i915_gem_context_get(file->driver_priv, args->ctx_id); |
1272 | if (IS_ERR(ctx)) { | |
b6359918 | 1273 | mutex_unlock(&dev->struct_mutex); |
41bde553 | 1274 | return PTR_ERR(ctx); |
b6359918 | 1275 | } |
41bde553 | 1276 | hs = &ctx->hang_stats; |
b6359918 MK |
1277 | |
1278 | if (capable(CAP_SYS_ADMIN)) | |
1279 | args->reset_count = i915_reset_count(&dev_priv->gpu_error); | |
1280 | else | |
1281 | args->reset_count = 0; | |
1282 | ||
1283 | args->batch_active = hs->batch_active; | |
1284 | args->batch_pending = hs->batch_pending; | |
1285 | ||
1286 | mutex_unlock(&dev->struct_mutex); | |
1287 | ||
1288 | return 0; | |
1289 | } | |
1290 | ||
59ea9054 | 1291 | static int i915_reset_complete(struct drm_device *dev) |
907b28c5 CW |
1292 | { |
1293 | u8 gdrst; | |
59ea9054 | 1294 | pci_read_config_byte(dev->pdev, I915_GDRST, &gdrst); |
73bbf6bd | 1295 | return (gdrst & GRDOM_RESET_STATUS) == 0; |
907b28c5 CW |
1296 | } |
1297 | ||
59ea9054 | 1298 | static int i915_do_reset(struct drm_device *dev) |
907b28c5 | 1299 | { |
73bbf6bd | 1300 | /* assert reset for at least 20 usec */ |
59ea9054 | 1301 | pci_write_config_byte(dev->pdev, I915_GDRST, GRDOM_RESET_ENABLE); |
73bbf6bd | 1302 | udelay(20); |
59ea9054 | 1303 | pci_write_config_byte(dev->pdev, I915_GDRST, 0); |
907b28c5 | 1304 | |
59ea9054 | 1305 | return wait_for(i915_reset_complete(dev), 500); |
73bbf6bd VS |
1306 | } |
1307 | ||
1308 | static int g4x_reset_complete(struct drm_device *dev) | |
1309 | { | |
1310 | u8 gdrst; | |
59ea9054 | 1311 | pci_read_config_byte(dev->pdev, I915_GDRST, &gdrst); |
73bbf6bd | 1312 | return (gdrst & GRDOM_RESET_ENABLE) == 0; |
907b28c5 CW |
1313 | } |
1314 | ||
408d4b9e VS |
1315 | static int g33_do_reset(struct drm_device *dev) |
1316 | { | |
408d4b9e VS |
1317 | pci_write_config_byte(dev->pdev, I915_GDRST, GRDOM_RESET_ENABLE); |
1318 | return wait_for(g4x_reset_complete(dev), 500); | |
1319 | } | |
1320 | ||
fa4f53c4 VS |
1321 | static int g4x_do_reset(struct drm_device *dev) |
1322 | { | |
1323 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1324 | int ret; | |
1325 | ||
59ea9054 | 1326 | pci_write_config_byte(dev->pdev, I915_GDRST, |
fa4f53c4 | 1327 | GRDOM_RENDER | GRDOM_RESET_ENABLE); |
73bbf6bd | 1328 | ret = wait_for(g4x_reset_complete(dev), 500); |
fa4f53c4 VS |
1329 | if (ret) |
1330 | return ret; | |
1331 | ||
1332 | /* WaVcpClkGateDisableForMediaReset:ctg,elk */ | |
1333 | I915_WRITE(VDECCLK_GATE_D, I915_READ(VDECCLK_GATE_D) | VCP_UNIT_CLOCK_GATE_DISABLE); | |
1334 | POSTING_READ(VDECCLK_GATE_D); | |
1335 | ||
59ea9054 | 1336 | pci_write_config_byte(dev->pdev, I915_GDRST, |
fa4f53c4 | 1337 | GRDOM_MEDIA | GRDOM_RESET_ENABLE); |
73bbf6bd | 1338 | ret = wait_for(g4x_reset_complete(dev), 500); |
fa4f53c4 VS |
1339 | if (ret) |
1340 | return ret; | |
1341 | ||
1342 | /* WaVcpClkGateDisableForMediaReset:ctg,elk */ | |
1343 | I915_WRITE(VDECCLK_GATE_D, I915_READ(VDECCLK_GATE_D) & ~VCP_UNIT_CLOCK_GATE_DISABLE); | |
1344 | POSTING_READ(VDECCLK_GATE_D); | |
1345 | ||
59ea9054 | 1346 | pci_write_config_byte(dev->pdev, I915_GDRST, 0); |
fa4f53c4 VS |
1347 | |
1348 | return 0; | |
1349 | } | |
1350 | ||
907b28c5 CW |
1351 | static int ironlake_do_reset(struct drm_device *dev) |
1352 | { | |
1353 | struct drm_i915_private *dev_priv = dev->dev_private; | |
907b28c5 CW |
1354 | int ret; |
1355 | ||
907b28c5 | 1356 | I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, |
0f08ffd6 | 1357 | ILK_GRDOM_RENDER | ILK_GRDOM_RESET_ENABLE); |
f67deb72 | 1358 | ret = wait_for((I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & |
b3a3f03d | 1359 | ILK_GRDOM_RESET_ENABLE) == 0, 500); |
907b28c5 CW |
1360 | if (ret) |
1361 | return ret; | |
1362 | ||
907b28c5 | 1363 | I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, |
0f08ffd6 | 1364 | ILK_GRDOM_MEDIA | ILK_GRDOM_RESET_ENABLE); |
9aa7250f VS |
1365 | ret = wait_for((I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & |
1366 | ILK_GRDOM_RESET_ENABLE) == 0, 500); | |
1367 | if (ret) | |
1368 | return ret; | |
1369 | ||
1370 | I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, 0); | |
1371 | ||
1372 | return 0; | |
907b28c5 CW |
1373 | } |
1374 | ||
1375 | static int gen6_do_reset(struct drm_device *dev) | |
1376 | { | |
1377 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1378 | int ret; | |
907b28c5 CW |
1379 | |
1380 | /* Reset the chip */ | |
1381 | ||
1382 | /* GEN6_GDRST is not in the gt power well, no need to check | |
1383 | * for fifo space for the write or forcewake the chip for | |
1384 | * the read | |
1385 | */ | |
6af5d92f | 1386 | __raw_i915_write32(dev_priv, GEN6_GDRST, GEN6_GRDOM_FULL); |
907b28c5 CW |
1387 | |
1388 | /* Spin waiting for the device to ack the reset request */ | |
6af5d92f | 1389 | ret = wait_for((__raw_i915_read32(dev_priv, GEN6_GDRST) & GEN6_GRDOM_FULL) == 0, 500); |
907b28c5 | 1390 | |
0294ae7b | 1391 | intel_uncore_forcewake_reset(dev, true); |
5babf0fc | 1392 | |
907b28c5 CW |
1393 | return ret; |
1394 | } | |
1395 | ||
1396 | int intel_gpu_reset(struct drm_device *dev) | |
1397 | { | |
542c184f RB |
1398 | if (INTEL_INFO(dev)->gen >= 6) |
1399 | return gen6_do_reset(dev); | |
1400 | else if (IS_GEN5(dev)) | |
1401 | return ironlake_do_reset(dev); | |
1402 | else if (IS_G4X(dev)) | |
1403 | return g4x_do_reset(dev); | |
408d4b9e VS |
1404 | else if (IS_G33(dev)) |
1405 | return g33_do_reset(dev); | |
1406 | else if (INTEL_INFO(dev)->gen >= 3) | |
59ea9054 | 1407 | return i915_do_reset(dev); |
542c184f RB |
1408 | else |
1409 | return -ENODEV; | |
907b28c5 CW |
1410 | } |
1411 | ||
907b28c5 CW |
1412 | void intel_uncore_check_errors(struct drm_device *dev) |
1413 | { | |
1414 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1415 | ||
1416 | if (HAS_FPGA_DBG_UNCLAIMED(dev) && | |
6af5d92f | 1417 | (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM)) { |
907b28c5 | 1418 | DRM_ERROR("Unclaimed register before interrupt\n"); |
6af5d92f | 1419 | __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); |
907b28c5 CW |
1420 | } |
1421 | } |