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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" | |
26 | ||
27 | #define FORCEWAKE_ACK_TIMEOUT_MS 2 | |
28 | ||
6af5d92f CW |
29 | #define __raw_i915_read8(dev_priv__, reg__) readb((dev_priv__)->regs + (reg__)) |
30 | #define __raw_i915_write8(dev_priv__, reg__, val__) writeb(val__, (dev_priv__)->regs + (reg__)) | |
31 | ||
32 | #define __raw_i915_read16(dev_priv__, reg__) readw((dev_priv__)->regs + (reg__)) | |
33 | #define __raw_i915_write16(dev_priv__, reg__, val__) writew(val__, (dev_priv__)->regs + (reg__)) | |
34 | ||
35 | #define __raw_i915_read32(dev_priv__, reg__) readl((dev_priv__)->regs + (reg__)) | |
36 | #define __raw_i915_write32(dev_priv__, reg__, val__) writel(val__, (dev_priv__)->regs + (reg__)) | |
37 | ||
38 | #define __raw_i915_read64(dev_priv__, reg__) readq((dev_priv__)->regs + (reg__)) | |
39 | #define __raw_i915_write64(dev_priv__, reg__, val__) writeq(val__, (dev_priv__)->regs + (reg__)) | |
40 | ||
41 | #define __raw_posting_read(dev_priv__, reg__) (void)__raw_i915_read32(dev_priv__, reg__) | |
42 | ||
b2ec142c PZ |
43 | static void |
44 | assert_device_not_suspended(struct drm_i915_private *dev_priv) | |
45 | { | |
2b387059 CW |
46 | WARN_ONCE(HAS_RUNTIME_PM(dev_priv->dev) && dev_priv->pm.suspended, |
47 | "Device suspended\n"); | |
b2ec142c | 48 | } |
6af5d92f | 49 | |
907b28c5 CW |
50 | static void __gen6_gt_wait_for_thread_c0(struct drm_i915_private *dev_priv) |
51 | { | |
907b28c5 CW |
52 | /* w/a for a sporadic read returning 0 by waiting for the GT |
53 | * thread to wake up. | |
54 | */ | |
eb88bd1b VS |
55 | if (wait_for_atomic_us((__raw_i915_read32(dev_priv, GEN6_GT_THREAD_STATUS_REG) & |
56 | GEN6_GT_THREAD_STATUS_CORE_MASK) == 0, 500)) | |
907b28c5 CW |
57 | DRM_ERROR("GT thread status wait timed out\n"); |
58 | } | |
59 | ||
60 | static void __gen6_gt_force_wake_reset(struct drm_i915_private *dev_priv) | |
61 | { | |
6af5d92f CW |
62 | __raw_i915_write32(dev_priv, FORCEWAKE, 0); |
63 | /* something from same cacheline, but !FORCEWAKE */ | |
64 | __raw_posting_read(dev_priv, ECOBUS); | |
907b28c5 CW |
65 | } |
66 | ||
c8d9a590 D |
67 | static void __gen6_gt_force_wake_get(struct drm_i915_private *dev_priv, |
68 | int fw_engine) | |
907b28c5 | 69 | { |
6af5d92f | 70 | if (wait_for_atomic((__raw_i915_read32(dev_priv, FORCEWAKE_ACK) & 1) == 0, |
907b28c5 CW |
71 | FORCEWAKE_ACK_TIMEOUT_MS)) |
72 | DRM_ERROR("Timed out waiting for forcewake old ack to clear.\n"); | |
73 | ||
6af5d92f CW |
74 | __raw_i915_write32(dev_priv, FORCEWAKE, 1); |
75 | /* something from same cacheline, but !FORCEWAKE */ | |
76 | __raw_posting_read(dev_priv, ECOBUS); | |
907b28c5 | 77 | |
6af5d92f | 78 | if (wait_for_atomic((__raw_i915_read32(dev_priv, FORCEWAKE_ACK) & 1), |
907b28c5 CW |
79 | FORCEWAKE_ACK_TIMEOUT_MS)) |
80 | DRM_ERROR("Timed out waiting for forcewake to ack request.\n"); | |
81 | ||
82 | /* WaRsForcewakeWaitTC0:snb */ | |
83 | __gen6_gt_wait_for_thread_c0(dev_priv); | |
84 | } | |
85 | ||
6a68735a | 86 | static void __gen7_gt_force_wake_mt_reset(struct drm_i915_private *dev_priv) |
907b28c5 | 87 | { |
6af5d92f | 88 | __raw_i915_write32(dev_priv, FORCEWAKE_MT, _MASKED_BIT_DISABLE(0xffff)); |
907b28c5 | 89 | /* something from same cacheline, but !FORCEWAKE_MT */ |
6af5d92f | 90 | __raw_posting_read(dev_priv, ECOBUS); |
907b28c5 CW |
91 | } |
92 | ||
6a68735a | 93 | static void __gen7_gt_force_wake_mt_get(struct drm_i915_private *dev_priv, |
c8d9a590 | 94 | int fw_engine) |
907b28c5 CW |
95 | { |
96 | u32 forcewake_ack; | |
97 | ||
f98cd096 | 98 | if (IS_HASWELL(dev_priv->dev) || IS_BROADWELL(dev_priv->dev)) |
907b28c5 CW |
99 | forcewake_ack = FORCEWAKE_ACK_HSW; |
100 | else | |
101 | forcewake_ack = FORCEWAKE_MT_ACK; | |
102 | ||
6af5d92f | 103 | if (wait_for_atomic((__raw_i915_read32(dev_priv, forcewake_ack) & FORCEWAKE_KERNEL) == 0, |
907b28c5 CW |
104 | FORCEWAKE_ACK_TIMEOUT_MS)) |
105 | DRM_ERROR("Timed out waiting for forcewake old ack to clear.\n"); | |
106 | ||
6af5d92f CW |
107 | __raw_i915_write32(dev_priv, FORCEWAKE_MT, |
108 | _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); | |
907b28c5 | 109 | /* something from same cacheline, but !FORCEWAKE_MT */ |
6af5d92f | 110 | __raw_posting_read(dev_priv, ECOBUS); |
907b28c5 | 111 | |
6af5d92f | 112 | if (wait_for_atomic((__raw_i915_read32(dev_priv, forcewake_ack) & FORCEWAKE_KERNEL), |
907b28c5 CW |
113 | FORCEWAKE_ACK_TIMEOUT_MS)) |
114 | DRM_ERROR("Timed out waiting for forcewake to ack request.\n"); | |
115 | ||
116 | /* WaRsForcewakeWaitTC0:ivb,hsw */ | |
c549f738 | 117 | __gen6_gt_wait_for_thread_c0(dev_priv); |
907b28c5 CW |
118 | } |
119 | ||
120 | static void gen6_gt_check_fifodbg(struct drm_i915_private *dev_priv) | |
121 | { | |
122 | u32 gtfifodbg; | |
6af5d92f CW |
123 | |
124 | gtfifodbg = __raw_i915_read32(dev_priv, GTFIFODBG); | |
90f256b5 VS |
125 | if (WARN(gtfifodbg, "GT wake FIFO error 0x%x\n", gtfifodbg)) |
126 | __raw_i915_write32(dev_priv, GTFIFODBG, gtfifodbg); | |
907b28c5 CW |
127 | } |
128 | ||
c8d9a590 D |
129 | static void __gen6_gt_force_wake_put(struct drm_i915_private *dev_priv, |
130 | int fw_engine) | |
907b28c5 | 131 | { |
6af5d92f | 132 | __raw_i915_write32(dev_priv, FORCEWAKE, 0); |
907b28c5 | 133 | /* something from same cacheline, but !FORCEWAKE */ |
6af5d92f | 134 | __raw_posting_read(dev_priv, ECOBUS); |
907b28c5 CW |
135 | gen6_gt_check_fifodbg(dev_priv); |
136 | } | |
137 | ||
6a68735a | 138 | static void __gen7_gt_force_wake_mt_put(struct drm_i915_private *dev_priv, |
c8d9a590 | 139 | int fw_engine) |
907b28c5 | 140 | { |
6af5d92f CW |
141 | __raw_i915_write32(dev_priv, FORCEWAKE_MT, |
142 | _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); | |
907b28c5 | 143 | /* something from same cacheline, but !FORCEWAKE_MT */ |
6af5d92f | 144 | __raw_posting_read(dev_priv, ECOBUS); |
6a68735a MK |
145 | |
146 | if (IS_GEN7(dev_priv->dev)) | |
147 | gen6_gt_check_fifodbg(dev_priv); | |
907b28c5 CW |
148 | } |
149 | ||
150 | static int __gen6_gt_wait_for_fifo(struct drm_i915_private *dev_priv) | |
151 | { | |
152 | int ret = 0; | |
153 | ||
5135d64b D |
154 | /* On VLV, FIFO will be shared by both SW and HW. |
155 | * So, we need to read the FREE_ENTRIES everytime */ | |
156 | if (IS_VALLEYVIEW(dev_priv->dev)) | |
157 | dev_priv->uncore.fifo_count = | |
158 | __raw_i915_read32(dev_priv, GTFIFOCTL) & | |
159 | GT_FIFO_FREE_ENTRIES_MASK; | |
160 | ||
907b28c5 CW |
161 | if (dev_priv->uncore.fifo_count < GT_FIFO_NUM_RESERVED_ENTRIES) { |
162 | int loop = 500; | |
46520e2b | 163 | u32 fifo = __raw_i915_read32(dev_priv, GTFIFOCTL) & GT_FIFO_FREE_ENTRIES_MASK; |
907b28c5 CW |
164 | while (fifo <= GT_FIFO_NUM_RESERVED_ENTRIES && loop--) { |
165 | udelay(10); | |
46520e2b | 166 | fifo = __raw_i915_read32(dev_priv, GTFIFOCTL) & GT_FIFO_FREE_ENTRIES_MASK; |
907b28c5 CW |
167 | } |
168 | if (WARN_ON(loop < 0 && fifo <= GT_FIFO_NUM_RESERVED_ENTRIES)) | |
169 | ++ret; | |
170 | dev_priv->uncore.fifo_count = fifo; | |
171 | } | |
172 | dev_priv->uncore.fifo_count--; | |
173 | ||
174 | return ret; | |
175 | } | |
176 | ||
177 | static void vlv_force_wake_reset(struct drm_i915_private *dev_priv) | |
178 | { | |
6af5d92f CW |
179 | __raw_i915_write32(dev_priv, FORCEWAKE_VLV, |
180 | _MASKED_BIT_DISABLE(0xffff)); | |
05adaf1f JN |
181 | __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_VLV, |
182 | _MASKED_BIT_DISABLE(0xffff)); | |
907b28c5 | 183 | /* something from same cacheline, but !FORCEWAKE_VLV */ |
6af5d92f | 184 | __raw_posting_read(dev_priv, FORCEWAKE_ACK_VLV); |
907b28c5 CW |
185 | } |
186 | ||
940aece4 D |
187 | static void __vlv_force_wake_get(struct drm_i915_private *dev_priv, |
188 | int fw_engine) | |
907b28c5 | 189 | { |
940aece4 D |
190 | /* Check for Render Engine */ |
191 | if (FORCEWAKE_RENDER & fw_engine) { | |
95009861 MK |
192 | if (wait_for_atomic((__raw_i915_read32(dev_priv, |
193 | FORCEWAKE_ACK_VLV) & | |
194 | FORCEWAKE_KERNEL) == 0, | |
195 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
196 | DRM_ERROR("Timed out: Render forcewake old ack to clear.\n"); | |
940aece4 D |
197 | |
198 | __raw_i915_write32(dev_priv, FORCEWAKE_VLV, | |
199 | _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); | |
200 | ||
201 | if (wait_for_atomic((__raw_i915_read32(dev_priv, | |
202 | FORCEWAKE_ACK_VLV) & | |
203 | FORCEWAKE_KERNEL), | |
204 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
205 | DRM_ERROR("Timed out: waiting for Render to ack.\n"); | |
206 | } | |
907b28c5 | 207 | |
940aece4 D |
208 | /* Check for Media Engine */ |
209 | if (FORCEWAKE_MEDIA & fw_engine) { | |
95009861 MK |
210 | if (wait_for_atomic((__raw_i915_read32(dev_priv, |
211 | FORCEWAKE_ACK_MEDIA_VLV) & | |
212 | FORCEWAKE_KERNEL) == 0, | |
213 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
214 | DRM_ERROR("Timed out: Media forcewake old ack to clear.\n"); | |
940aece4 D |
215 | |
216 | __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_VLV, | |
217 | _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); | |
218 | ||
219 | if (wait_for_atomic((__raw_i915_read32(dev_priv, | |
220 | FORCEWAKE_ACK_MEDIA_VLV) & | |
221 | FORCEWAKE_KERNEL), | |
222 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
223 | DRM_ERROR("Timed out: waiting for media to ack.\n"); | |
224 | } | |
907b28c5 CW |
225 | } |
226 | ||
940aece4 D |
227 | static void __vlv_force_wake_put(struct drm_i915_private *dev_priv, |
228 | int fw_engine) | |
907b28c5 | 229 | { |
940aece4 D |
230 | |
231 | /* Check for Render Engine */ | |
232 | if (FORCEWAKE_RENDER & fw_engine) | |
233 | __raw_i915_write32(dev_priv, FORCEWAKE_VLV, | |
234 | _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); | |
235 | ||
236 | ||
237 | /* Check for Media Engine */ | |
238 | if (FORCEWAKE_MEDIA & fw_engine) | |
239 | __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_VLV, | |
240 | _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); | |
241 | ||
ab53c267 VS |
242 | /* something from same cacheline, but !FORCEWAKE_VLV */ |
243 | __raw_posting_read(dev_priv, FORCEWAKE_ACK_VLV); | |
244 | if (!IS_CHERRYVIEW(dev_priv->dev)) | |
245 | gen6_gt_check_fifodbg(dev_priv); | |
940aece4 D |
246 | } |
247 | ||
b88b23d9 | 248 | static void vlv_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine) |
940aece4 D |
249 | { |
250 | unsigned long irqflags; | |
251 | ||
252 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); | |
6fe72865 VS |
253 | |
254 | if (fw_engine & FORCEWAKE_RENDER && | |
255 | dev_priv->uncore.fw_rendercount++ != 0) | |
256 | fw_engine &= ~FORCEWAKE_RENDER; | |
257 | if (fw_engine & FORCEWAKE_MEDIA && | |
258 | dev_priv->uncore.fw_mediacount++ != 0) | |
259 | fw_engine &= ~FORCEWAKE_MEDIA; | |
260 | ||
261 | if (fw_engine) | |
262 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fw_engine); | |
940aece4 D |
263 | |
264 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); | |
265 | } | |
266 | ||
b88b23d9 | 267 | static void vlv_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) |
940aece4 D |
268 | { |
269 | unsigned long irqflags; | |
270 | ||
271 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); | |
272 | ||
3123fcaf DV |
273 | if (fw_engine & FORCEWAKE_RENDER) { |
274 | WARN_ON(!dev_priv->uncore.fw_rendercount); | |
275 | if (--dev_priv->uncore.fw_rendercount != 0) | |
276 | fw_engine &= ~FORCEWAKE_RENDER; | |
277 | } | |
278 | ||
279 | if (fw_engine & FORCEWAKE_MEDIA) { | |
280 | WARN_ON(!dev_priv->uncore.fw_mediacount); | |
281 | if (--dev_priv->uncore.fw_mediacount != 0) | |
282 | fw_engine &= ~FORCEWAKE_MEDIA; | |
283 | } | |
940aece4 | 284 | |
6fe72865 VS |
285 | if (fw_engine) |
286 | dev_priv->uncore.funcs.force_wake_put(dev_priv, fw_engine); | |
940aece4 D |
287 | |
288 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); | |
907b28c5 CW |
289 | } |
290 | ||
38cff0b1 ZW |
291 | static void __gen9_gt_force_wake_mt_reset(struct drm_i915_private *dev_priv) |
292 | { | |
293 | __raw_i915_write32(dev_priv, FORCEWAKE_RENDER_GEN9, | |
294 | _MASKED_BIT_DISABLE(0xffff)); | |
295 | ||
296 | __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_GEN9, | |
297 | _MASKED_BIT_DISABLE(0xffff)); | |
298 | ||
299 | __raw_i915_write32(dev_priv, FORCEWAKE_BLITTER_GEN9, | |
300 | _MASKED_BIT_DISABLE(0xffff)); | |
301 | } | |
302 | ||
303 | static void | |
304 | __gen9_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine) | |
305 | { | |
306 | /* Check for Render Engine */ | |
307 | if (FORCEWAKE_RENDER & fw_engine) { | |
308 | if (wait_for_atomic((__raw_i915_read32(dev_priv, | |
309 | FORCEWAKE_ACK_RENDER_GEN9) & | |
310 | FORCEWAKE_KERNEL) == 0, | |
311 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
312 | DRM_ERROR("Timed out: Render forcewake old ack to clear.\n"); | |
313 | ||
314 | __raw_i915_write32(dev_priv, FORCEWAKE_RENDER_GEN9, | |
315 | _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); | |
316 | ||
317 | if (wait_for_atomic((__raw_i915_read32(dev_priv, | |
318 | FORCEWAKE_ACK_RENDER_GEN9) & | |
319 | FORCEWAKE_KERNEL), | |
320 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
321 | DRM_ERROR("Timed out: waiting for Render to ack.\n"); | |
322 | } | |
323 | ||
324 | /* Check for Media Engine */ | |
325 | if (FORCEWAKE_MEDIA & fw_engine) { | |
326 | if (wait_for_atomic((__raw_i915_read32(dev_priv, | |
327 | FORCEWAKE_ACK_MEDIA_GEN9) & | |
328 | FORCEWAKE_KERNEL) == 0, | |
329 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
330 | DRM_ERROR("Timed out: Media forcewake old ack to clear.\n"); | |
331 | ||
332 | __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_GEN9, | |
333 | _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); | |
334 | ||
335 | if (wait_for_atomic((__raw_i915_read32(dev_priv, | |
336 | FORCEWAKE_ACK_MEDIA_GEN9) & | |
337 | FORCEWAKE_KERNEL), | |
338 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
339 | DRM_ERROR("Timed out: waiting for Media to ack.\n"); | |
340 | } | |
341 | ||
342 | /* Check for Blitter Engine */ | |
343 | if (FORCEWAKE_BLITTER & fw_engine) { | |
344 | if (wait_for_atomic((__raw_i915_read32(dev_priv, | |
345 | FORCEWAKE_ACK_BLITTER_GEN9) & | |
346 | FORCEWAKE_KERNEL) == 0, | |
347 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
348 | DRM_ERROR("Timed out: Blitter forcewake old ack to clear.\n"); | |
349 | ||
350 | __raw_i915_write32(dev_priv, FORCEWAKE_BLITTER_GEN9, | |
351 | _MASKED_BIT_ENABLE(FORCEWAKE_KERNEL)); | |
352 | ||
353 | if (wait_for_atomic((__raw_i915_read32(dev_priv, | |
354 | FORCEWAKE_ACK_BLITTER_GEN9) & | |
355 | FORCEWAKE_KERNEL), | |
356 | FORCEWAKE_ACK_TIMEOUT_MS)) | |
357 | DRM_ERROR("Timed out: waiting for Blitter to ack.\n"); | |
358 | } | |
359 | } | |
360 | ||
361 | static void | |
362 | __gen9_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) | |
363 | { | |
364 | /* Check for Render Engine */ | |
365 | if (FORCEWAKE_RENDER & fw_engine) | |
366 | __raw_i915_write32(dev_priv, FORCEWAKE_RENDER_GEN9, | |
367 | _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); | |
368 | ||
369 | /* Check for Media Engine */ | |
370 | if (FORCEWAKE_MEDIA & fw_engine) | |
371 | __raw_i915_write32(dev_priv, FORCEWAKE_MEDIA_GEN9, | |
372 | _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); | |
373 | ||
374 | /* Check for Blitter Engine */ | |
375 | if (FORCEWAKE_BLITTER & fw_engine) | |
376 | __raw_i915_write32(dev_priv, FORCEWAKE_BLITTER_GEN9, | |
377 | _MASKED_BIT_DISABLE(FORCEWAKE_KERNEL)); | |
378 | } | |
379 | ||
380 | static void | |
381 | gen9_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine) | |
382 | { | |
383 | unsigned long irqflags; | |
384 | ||
385 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); | |
386 | ||
387 | if (FORCEWAKE_RENDER & fw_engine) { | |
388 | if (dev_priv->uncore.fw_rendercount++ == 0) | |
389 | dev_priv->uncore.funcs.force_wake_get(dev_priv, | |
390 | FORCEWAKE_RENDER); | |
391 | } | |
392 | ||
393 | if (FORCEWAKE_MEDIA & fw_engine) { | |
394 | if (dev_priv->uncore.fw_mediacount++ == 0) | |
395 | dev_priv->uncore.funcs.force_wake_get(dev_priv, | |
396 | FORCEWAKE_MEDIA); | |
397 | } | |
398 | ||
399 | if (FORCEWAKE_BLITTER & fw_engine) { | |
400 | if (dev_priv->uncore.fw_blittercount++ == 0) | |
401 | dev_priv->uncore.funcs.force_wake_get(dev_priv, | |
402 | FORCEWAKE_BLITTER); | |
403 | } | |
404 | ||
405 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); | |
406 | } | |
407 | ||
408 | static void | |
409 | gen9_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) | |
410 | { | |
411 | unsigned long irqflags; | |
412 | ||
413 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); | |
414 | ||
415 | if (FORCEWAKE_RENDER & fw_engine) { | |
416 | WARN_ON(dev_priv->uncore.fw_rendercount == 0); | |
417 | if (--dev_priv->uncore.fw_rendercount == 0) | |
418 | dev_priv->uncore.funcs.force_wake_put(dev_priv, | |
419 | FORCEWAKE_RENDER); | |
420 | } | |
421 | ||
422 | if (FORCEWAKE_MEDIA & fw_engine) { | |
423 | WARN_ON(dev_priv->uncore.fw_mediacount == 0); | |
424 | if (--dev_priv->uncore.fw_mediacount == 0) | |
425 | dev_priv->uncore.funcs.force_wake_put(dev_priv, | |
426 | FORCEWAKE_MEDIA); | |
427 | } | |
428 | ||
429 | if (FORCEWAKE_BLITTER & fw_engine) { | |
430 | WARN_ON(dev_priv->uncore.fw_blittercount == 0); | |
431 | if (--dev_priv->uncore.fw_blittercount == 0) | |
432 | dev_priv->uncore.funcs.force_wake_put(dev_priv, | |
433 | FORCEWAKE_BLITTER); | |
434 | } | |
435 | ||
436 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); | |
437 | } | |
438 | ||
8232644c | 439 | static void gen6_force_wake_timer(unsigned long arg) |
aec347ab | 440 | { |
8232644c | 441 | struct drm_i915_private *dev_priv = (void *)arg; |
aec347ab CW |
442 | unsigned long irqflags; |
443 | ||
b2ec142c PZ |
444 | assert_device_not_suspended(dev_priv); |
445 | ||
aec347ab | 446 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); |
3123fcaf DV |
447 | WARN_ON(!dev_priv->uncore.forcewake_count); |
448 | ||
aec347ab | 449 | if (--dev_priv->uncore.forcewake_count == 0) |
c8d9a590 | 450 | dev_priv->uncore.funcs.force_wake_put(dev_priv, FORCEWAKE_ALL); |
aec347ab | 451 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); |
6d88064e PZ |
452 | |
453 | intel_runtime_pm_put(dev_priv); | |
aec347ab CW |
454 | } |
455 | ||
156c7ca0 | 456 | void intel_uncore_forcewake_reset(struct drm_device *dev, bool restore) |
ef46e0d2 DV |
457 | { |
458 | struct drm_i915_private *dev_priv = dev->dev_private; | |
0294ae7b CW |
459 | unsigned long irqflags; |
460 | ||
9e31c2a5 ID |
461 | if (del_timer_sync(&dev_priv->uncore.force_wake_timer)) |
462 | gen6_force_wake_timer((unsigned long)dev_priv); | |
0294ae7b CW |
463 | |
464 | /* Hold uncore.lock across reset to prevent any register access | |
465 | * with forcewake not set correctly | |
466 | */ | |
467 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); | |
ef46e0d2 | 468 | |
0a089e33 | 469 | if (IS_VALLEYVIEW(dev)) |
ef46e0d2 | 470 | vlv_force_wake_reset(dev_priv); |
0a089e33 | 471 | else if (IS_GEN6(dev) || IS_GEN7(dev)) |
ef46e0d2 | 472 | __gen6_gt_force_wake_reset(dev_priv); |
0a089e33 | 473 | |
f98cd096 | 474 | if (IS_IVYBRIDGE(dev) || IS_HASWELL(dev) || IS_BROADWELL(dev)) |
6a68735a | 475 | __gen7_gt_force_wake_mt_reset(dev_priv); |
0294ae7b | 476 | |
38cff0b1 ZW |
477 | if (IS_GEN9(dev)) |
478 | __gen9_gt_force_wake_mt_reset(dev_priv); | |
479 | ||
0294ae7b CW |
480 | if (restore) { /* If reset with a user forcewake, try to restore */ |
481 | unsigned fw = 0; | |
482 | ||
483 | if (IS_VALLEYVIEW(dev)) { | |
484 | if (dev_priv->uncore.fw_rendercount) | |
485 | fw |= FORCEWAKE_RENDER; | |
486 | ||
487 | if (dev_priv->uncore.fw_mediacount) | |
488 | fw |= FORCEWAKE_MEDIA; | |
38cff0b1 ZW |
489 | } else if (IS_GEN9(dev)) { |
490 | if (dev_priv->uncore.fw_rendercount) | |
491 | fw |= FORCEWAKE_RENDER; | |
492 | ||
493 | if (dev_priv->uncore.fw_mediacount) | |
494 | fw |= FORCEWAKE_MEDIA; | |
495 | ||
496 | if (dev_priv->uncore.fw_blittercount) | |
497 | fw |= FORCEWAKE_BLITTER; | |
0294ae7b CW |
498 | } else { |
499 | if (dev_priv->uncore.forcewake_count) | |
500 | fw = FORCEWAKE_ALL; | |
501 | } | |
502 | ||
503 | if (fw) | |
504 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fw); | |
505 | ||
506 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
507 | dev_priv->uncore.fifo_count = | |
508 | __raw_i915_read32(dev_priv, GTFIFOCTL) & | |
509 | GT_FIFO_FREE_ENTRIES_MASK; | |
0294ae7b CW |
510 | } |
511 | ||
512 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); | |
ef46e0d2 DV |
513 | } |
514 | ||
ed493883 ID |
515 | static void __intel_uncore_early_sanitize(struct drm_device *dev, |
516 | bool restore_forcewake) | |
907b28c5 CW |
517 | { |
518 | struct drm_i915_private *dev_priv = dev->dev_private; | |
519 | ||
520 | if (HAS_FPGA_DBG_UNCLAIMED(dev)) | |
6af5d92f | 521 | __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); |
18ce3994 | 522 | |
1d2866ba | 523 | if ((IS_HASWELL(dev) || IS_BROADWELL(dev)) && |
18ce3994 BW |
524 | (__raw_i915_read32(dev_priv, HSW_EDRAM_PRESENT) == 1)) { |
525 | /* The docs do not explain exactly how the calculation can be | |
526 | * made. It is somewhat guessable, but for now, it's always | |
527 | * 128MB. | |
528 | * NB: We can't write IDICR yet because we do not have gt funcs | |
529 | * set up */ | |
530 | dev_priv->ellc_size = 128; | |
531 | DRM_INFO("Found %zuMB of eLLC\n", dev_priv->ellc_size); | |
532 | } | |
907b28c5 | 533 | |
97058870 VS |
534 | /* clear out old GT FIFO errors */ |
535 | if (IS_GEN6(dev) || IS_GEN7(dev)) | |
536 | __raw_i915_write32(dev_priv, GTFIFODBG, | |
537 | __raw_i915_read32(dev_priv, GTFIFODBG)); | |
538 | ||
10018603 | 539 | intel_uncore_forcewake_reset(dev, restore_forcewake); |
521198a2 MK |
540 | } |
541 | ||
ed493883 ID |
542 | void intel_uncore_early_sanitize(struct drm_device *dev, bool restore_forcewake) |
543 | { | |
544 | __intel_uncore_early_sanitize(dev, restore_forcewake); | |
545 | i915_check_and_clear_faults(dev); | |
546 | } | |
547 | ||
521198a2 MK |
548 | void intel_uncore_sanitize(struct drm_device *dev) |
549 | { | |
907b28c5 CW |
550 | /* BIOS often leaves RC6 enabled, but disable it for hw init */ |
551 | intel_disable_gt_powersave(dev); | |
552 | } | |
553 | ||
554 | /* | |
555 | * Generally this is called implicitly by the register read function. However, | |
556 | * if some sequence requires the GT to not power down then this function should | |
557 | * be called at the beginning of the sequence followed by a call to | |
558 | * gen6_gt_force_wake_put() at the end of the sequence. | |
559 | */ | |
c8d9a590 | 560 | void gen6_gt_force_wake_get(struct drm_i915_private *dev_priv, int fw_engine) |
907b28c5 CW |
561 | { |
562 | unsigned long irqflags; | |
563 | ||
ab484f8f BW |
564 | if (!dev_priv->uncore.funcs.force_wake_get) |
565 | return; | |
566 | ||
c8c8fb33 PZ |
567 | intel_runtime_pm_get(dev_priv); |
568 | ||
38cff0b1 ZW |
569 | /* Redirect to Gen9 specific routine */ |
570 | if (IS_GEN9(dev_priv->dev)) | |
571 | return gen9_force_wake_get(dev_priv, fw_engine); | |
572 | ||
940aece4 D |
573 | /* Redirect to VLV specific routine */ |
574 | if (IS_VALLEYVIEW(dev_priv->dev)) | |
575 | return vlv_force_wake_get(dev_priv, fw_engine); | |
576 | ||
907b28c5 CW |
577 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); |
578 | if (dev_priv->uncore.forcewake_count++ == 0) | |
c8d9a590 | 579 | dev_priv->uncore.funcs.force_wake_get(dev_priv, FORCEWAKE_ALL); |
907b28c5 CW |
580 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); |
581 | } | |
582 | ||
583 | /* | |
584 | * see gen6_gt_force_wake_get() | |
585 | */ | |
c8d9a590 | 586 | void gen6_gt_force_wake_put(struct drm_i915_private *dev_priv, int fw_engine) |
907b28c5 CW |
587 | { |
588 | unsigned long irqflags; | |
6d88064e | 589 | bool delayed = false; |
907b28c5 | 590 | |
ab484f8f BW |
591 | if (!dev_priv->uncore.funcs.force_wake_put) |
592 | return; | |
593 | ||
38cff0b1 ZW |
594 | /* Redirect to Gen9 specific routine */ |
595 | if (IS_GEN9(dev_priv->dev)) { | |
596 | gen9_force_wake_put(dev_priv, fw_engine); | |
597 | goto out; | |
598 | } | |
599 | ||
940aece4 | 600 | /* Redirect to VLV specific routine */ |
6d88064e PZ |
601 | if (IS_VALLEYVIEW(dev_priv->dev)) { |
602 | vlv_force_wake_put(dev_priv, fw_engine); | |
603 | goto out; | |
604 | } | |
940aece4 D |
605 | |
606 | ||
907b28c5 | 607 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags); |
3123fcaf DV |
608 | WARN_ON(!dev_priv->uncore.forcewake_count); |
609 | ||
aec347ab CW |
610 | if (--dev_priv->uncore.forcewake_count == 0) { |
611 | dev_priv->uncore.forcewake_count++; | |
6d88064e | 612 | delayed = true; |
8232644c CW |
613 | mod_timer_pinned(&dev_priv->uncore.force_wake_timer, |
614 | jiffies + 1); | |
aec347ab | 615 | } |
907b28c5 | 616 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); |
c8c8fb33 | 617 | |
6d88064e PZ |
618 | out: |
619 | if (!delayed) | |
620 | intel_runtime_pm_put(dev_priv); | |
907b28c5 CW |
621 | } |
622 | ||
e998c40f PZ |
623 | void assert_force_wake_inactive(struct drm_i915_private *dev_priv) |
624 | { | |
625 | if (!dev_priv->uncore.funcs.force_wake_get) | |
626 | return; | |
627 | ||
628 | WARN_ON(dev_priv->uncore.forcewake_count > 0); | |
629 | } | |
630 | ||
907b28c5 CW |
631 | /* We give fast paths for the really cool registers */ |
632 | #define NEEDS_FORCE_WAKE(dev_priv, reg) \ | |
ab484f8f | 633 | ((reg) < 0x40000 && (reg) != FORCEWAKE) |
907b28c5 | 634 | |
1938e59a | 635 | #define REG_RANGE(reg, start, end) ((reg) >= (start) && (reg) < (end)) |
38fb6a40 | 636 | |
1938e59a D |
637 | #define FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg) \ |
638 | (REG_RANGE((reg), 0x2000, 0x4000) || \ | |
639 | REG_RANGE((reg), 0x5000, 0x8000) || \ | |
640 | REG_RANGE((reg), 0xB000, 0x12000) || \ | |
641 | REG_RANGE((reg), 0x2E000, 0x30000)) | |
642 | ||
643 | #define FORCEWAKE_VLV_MEDIA_RANGE_OFFSET(reg) \ | |
644 | (REG_RANGE((reg), 0x12000, 0x14000) || \ | |
645 | REG_RANGE((reg), 0x22000, 0x24000) || \ | |
646 | REG_RANGE((reg), 0x30000, 0x40000)) | |
647 | ||
648 | #define FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg) \ | |
649 | (REG_RANGE((reg), 0x2000, 0x4000) || \ | |
650 | REG_RANGE((reg), 0x5000, 0x8000) || \ | |
651 | REG_RANGE((reg), 0x8300, 0x8500) || \ | |
652 | REG_RANGE((reg), 0xB000, 0xC000) || \ | |
653 | REG_RANGE((reg), 0xE000, 0xE800)) | |
654 | ||
655 | #define FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg) \ | |
656 | (REG_RANGE((reg), 0x8800, 0x8900) || \ | |
657 | REG_RANGE((reg), 0xD000, 0xD800) || \ | |
658 | REG_RANGE((reg), 0x12000, 0x14000) || \ | |
659 | REG_RANGE((reg), 0x1A000, 0x1C000) || \ | |
660 | REG_RANGE((reg), 0x1E800, 0x1EA00) || \ | |
661 | REG_RANGE((reg), 0x30000, 0x40000)) | |
662 | ||
663 | #define FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg) \ | |
664 | (REG_RANGE((reg), 0x4000, 0x5000) || \ | |
665 | REG_RANGE((reg), 0x8000, 0x8300) || \ | |
666 | REG_RANGE((reg), 0x8500, 0x8600) || \ | |
667 | REG_RANGE((reg), 0x9000, 0xB000) || \ | |
668 | REG_RANGE((reg), 0xC000, 0xC800) || \ | |
669 | REG_RANGE((reg), 0xF000, 0x10000) || \ | |
670 | REG_RANGE((reg), 0x14000, 0x14400) || \ | |
671 | REG_RANGE((reg), 0x22000, 0x24000)) | |
38fb6a40 | 672 | |
4597a88a | 673 | #define FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg) \ |
8ee558d8 | 674 | REG_RANGE((reg), 0xB00, 0x2000) |
4597a88a ZW |
675 | |
676 | #define FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg) \ | |
8ee558d8 AG |
677 | (REG_RANGE((reg), 0x2000, 0x2700) || \ |
678 | REG_RANGE((reg), 0x3000, 0x4000) || \ | |
4597a88a | 679 | REG_RANGE((reg), 0x5200, 0x8000) || \ |
8ee558d8 | 680 | REG_RANGE((reg), 0x8140, 0x8160) || \ |
4597a88a ZW |
681 | REG_RANGE((reg), 0x8300, 0x8500) || \ |
682 | REG_RANGE((reg), 0x8C00, 0x8D00) || \ | |
683 | REG_RANGE((reg), 0xB000, 0xB480) || \ | |
8ee558d8 AG |
684 | REG_RANGE((reg), 0xE000, 0xE900) || \ |
685 | REG_RANGE((reg), 0x24400, 0x24800)) | |
4597a88a ZW |
686 | |
687 | #define FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg) \ | |
8ee558d8 AG |
688 | (REG_RANGE((reg), 0x8130, 0x8140) || \ |
689 | REG_RANGE((reg), 0x8800, 0x8A00) || \ | |
4597a88a ZW |
690 | REG_RANGE((reg), 0xD000, 0xD800) || \ |
691 | REG_RANGE((reg), 0x12000, 0x14000) || \ | |
692 | REG_RANGE((reg), 0x1A000, 0x1EA00) || \ | |
693 | REG_RANGE((reg), 0x30000, 0x40000)) | |
694 | ||
695 | #define FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg) \ | |
696 | REG_RANGE((reg), 0x9400, 0x9800) | |
697 | ||
698 | #define FORCEWAKE_GEN9_BLITTER_RANGE_OFFSET(reg) \ | |
699 | ((reg) < 0x40000 &&\ | |
700 | !FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg) && \ | |
701 | !FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg) && \ | |
702 | !FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg) && \ | |
703 | !FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) | |
704 | ||
907b28c5 CW |
705 | static void |
706 | ilk_dummy_write(struct drm_i915_private *dev_priv) | |
707 | { | |
708 | /* WaIssueDummyWriteToWakeupFromRC6:ilk Issue a dummy write to wake up | |
709 | * the chip from rc6 before touching it for real. MI_MODE is masked, | |
710 | * hence harmless to write 0 into. */ | |
6af5d92f | 711 | __raw_i915_write32(dev_priv, MI_MODE, 0); |
907b28c5 CW |
712 | } |
713 | ||
714 | static void | |
5978118c PZ |
715 | hsw_unclaimed_reg_debug(struct drm_i915_private *dev_priv, u32 reg, bool read, |
716 | bool before) | |
907b28c5 | 717 | { |
5978118c PZ |
718 | const char *op = read ? "reading" : "writing to"; |
719 | const char *when = before ? "before" : "after"; | |
720 | ||
721 | if (!i915.mmio_debug) | |
722 | return; | |
723 | ||
ab484f8f | 724 | if (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM) { |
5978118c PZ |
725 | WARN(1, "Unclaimed register detected %s %s register 0x%x\n", |
726 | when, op, reg); | |
6af5d92f | 727 | __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); |
907b28c5 CW |
728 | } |
729 | } | |
730 | ||
731 | static void | |
5978118c | 732 | hsw_unclaimed_reg_detect(struct drm_i915_private *dev_priv) |
907b28c5 | 733 | { |
5978118c PZ |
734 | if (i915.mmio_debug) |
735 | return; | |
736 | ||
ab484f8f | 737 | if (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM) { |
5978118c | 738 | DRM_ERROR("Unclaimed register detected. Please use the i915.mmio_debug=1 to debug this problem."); |
6af5d92f | 739 | __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); |
907b28c5 CW |
740 | } |
741 | } | |
742 | ||
5d738795 BW |
743 | #define REG_READ_HEADER(x) \ |
744 | unsigned long irqflags; \ | |
745 | u##x val = 0; \ | |
6f0ea9e2 | 746 | assert_device_not_suspended(dev_priv); \ |
5d738795 BW |
747 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags) |
748 | ||
749 | #define REG_READ_FOOTER \ | |
750 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags); \ | |
751 | trace_i915_reg_rw(false, reg, val, sizeof(val), trace); \ | |
752 | return val | |
753 | ||
3967018e | 754 | #define __gen4_read(x) \ |
0b274481 | 755 | static u##x \ |
3967018e BW |
756 | gen4_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ |
757 | REG_READ_HEADER(x); \ | |
758 | val = __raw_i915_read##x(dev_priv, reg); \ | |
759 | REG_READ_FOOTER; \ | |
760 | } | |
761 | ||
762 | #define __gen5_read(x) \ | |
763 | static u##x \ | |
764 | gen5_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
765 | REG_READ_HEADER(x); \ | |
766 | ilk_dummy_write(dev_priv); \ | |
767 | val = __raw_i915_read##x(dev_priv, reg); \ | |
768 | REG_READ_FOOTER; \ | |
769 | } | |
770 | ||
771 | #define __gen6_read(x) \ | |
772 | static u##x \ | |
773 | gen6_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
5d738795 | 774 | REG_READ_HEADER(x); \ |
5978118c | 775 | hsw_unclaimed_reg_debug(dev_priv, reg, true, true); \ |
8232644c CW |
776 | if (dev_priv->uncore.forcewake_count == 0 && \ |
777 | NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ | |
778 | dev_priv->uncore.funcs.force_wake_get(dev_priv, \ | |
779 | FORCEWAKE_ALL); \ | |
aa0b3b5b PZ |
780 | val = __raw_i915_read##x(dev_priv, reg); \ |
781 | dev_priv->uncore.funcs.force_wake_put(dev_priv, \ | |
782 | FORCEWAKE_ALL); \ | |
783 | } else { \ | |
784 | val = __raw_i915_read##x(dev_priv, reg); \ | |
907b28c5 | 785 | } \ |
5978118c | 786 | hsw_unclaimed_reg_debug(dev_priv, reg, true, false); \ |
5d738795 | 787 | REG_READ_FOOTER; \ |
907b28c5 CW |
788 | } |
789 | ||
940aece4 D |
790 | #define __vlv_read(x) \ |
791 | static u##x \ | |
792 | vlv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
793 | unsigned fwengine = 0; \ | |
940aece4 | 794 | REG_READ_HEADER(x); \ |
6fe72865 VS |
795 | if (FORCEWAKE_VLV_RENDER_RANGE_OFFSET(reg)) { \ |
796 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
797 | fwengine = FORCEWAKE_RENDER; \ | |
798 | } else if (FORCEWAKE_VLV_MEDIA_RANGE_OFFSET(reg)) { \ | |
799 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
800 | fwengine = FORCEWAKE_MEDIA; \ | |
940aece4 | 801 | } \ |
6fe72865 VS |
802 | if (fwengine) \ |
803 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fwengine); \ | |
804 | val = __raw_i915_read##x(dev_priv, reg); \ | |
805 | if (fwengine) \ | |
806 | dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \ | |
940aece4 D |
807 | REG_READ_FOOTER; \ |
808 | } | |
809 | ||
1938e59a D |
810 | #define __chv_read(x) \ |
811 | static u##x \ | |
812 | chv_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
813 | unsigned fwengine = 0; \ | |
814 | REG_READ_HEADER(x); \ | |
815 | if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) { \ | |
816 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
817 | fwengine = FORCEWAKE_RENDER; \ | |
818 | } else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) { \ | |
819 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
820 | fwengine = FORCEWAKE_MEDIA; \ | |
821 | } else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) { \ | |
822 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
823 | fwengine |= FORCEWAKE_RENDER; \ | |
824 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
825 | fwengine |= FORCEWAKE_MEDIA; \ | |
826 | } \ | |
827 | if (fwengine) \ | |
828 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fwengine); \ | |
829 | val = __raw_i915_read##x(dev_priv, reg); \ | |
830 | if (fwengine) \ | |
831 | dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \ | |
832 | REG_READ_FOOTER; \ | |
833 | } | |
940aece4 | 834 | |
4597a88a ZW |
835 | #define SKL_NEEDS_FORCE_WAKE(dev_priv, reg) \ |
836 | ((reg) < 0x40000 && !FORCEWAKE_GEN9_UNCORE_RANGE_OFFSET(reg)) | |
837 | ||
838 | #define __gen9_read(x) \ | |
839 | static u##x \ | |
840 | gen9_read##x(struct drm_i915_private *dev_priv, off_t reg, bool trace) { \ | |
841 | REG_READ_HEADER(x); \ | |
842 | if (!SKL_NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ | |
843 | val = __raw_i915_read##x(dev_priv, reg); \ | |
844 | } else { \ | |
845 | unsigned fwengine = 0; \ | |
846 | if (FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg)) { \ | |
847 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
848 | fwengine = FORCEWAKE_RENDER; \ | |
849 | } else if (FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg)) { \ | |
850 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
851 | fwengine = FORCEWAKE_MEDIA; \ | |
852 | } else if (FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) { \ | |
853 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
854 | fwengine |= FORCEWAKE_RENDER; \ | |
855 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
856 | fwengine |= FORCEWAKE_MEDIA; \ | |
857 | } else { \ | |
858 | if (dev_priv->uncore.fw_blittercount == 0) \ | |
859 | fwengine = FORCEWAKE_BLITTER; \ | |
860 | } \ | |
861 | if (fwengine) \ | |
862 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fwengine); \ | |
863 | val = __raw_i915_read##x(dev_priv, reg); \ | |
864 | if (fwengine) \ | |
865 | dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \ | |
866 | } \ | |
867 | REG_READ_FOOTER; \ | |
868 | } | |
869 | ||
870 | __gen9_read(8) | |
871 | __gen9_read(16) | |
872 | __gen9_read(32) | |
873 | __gen9_read(64) | |
1938e59a D |
874 | __chv_read(8) |
875 | __chv_read(16) | |
876 | __chv_read(32) | |
877 | __chv_read(64) | |
940aece4 D |
878 | __vlv_read(8) |
879 | __vlv_read(16) | |
880 | __vlv_read(32) | |
881 | __vlv_read(64) | |
3967018e BW |
882 | __gen6_read(8) |
883 | __gen6_read(16) | |
884 | __gen6_read(32) | |
885 | __gen6_read(64) | |
886 | __gen5_read(8) | |
887 | __gen5_read(16) | |
888 | __gen5_read(32) | |
889 | __gen5_read(64) | |
890 | __gen4_read(8) | |
891 | __gen4_read(16) | |
892 | __gen4_read(32) | |
893 | __gen4_read(64) | |
894 | ||
4597a88a | 895 | #undef __gen9_read |
1938e59a | 896 | #undef __chv_read |
940aece4 | 897 | #undef __vlv_read |
3967018e BW |
898 | #undef __gen6_read |
899 | #undef __gen5_read | |
900 | #undef __gen4_read | |
5d738795 BW |
901 | #undef REG_READ_FOOTER |
902 | #undef REG_READ_HEADER | |
903 | ||
904 | #define REG_WRITE_HEADER \ | |
905 | unsigned long irqflags; \ | |
906 | trace_i915_reg_rw(true, reg, val, sizeof(val), trace); \ | |
6f0ea9e2 | 907 | assert_device_not_suspended(dev_priv); \ |
5d738795 | 908 | spin_lock_irqsave(&dev_priv->uncore.lock, irqflags) |
907b28c5 | 909 | |
0d965301 VS |
910 | #define REG_WRITE_FOOTER \ |
911 | spin_unlock_irqrestore(&dev_priv->uncore.lock, irqflags) | |
912 | ||
4032ef43 | 913 | #define __gen4_write(x) \ |
0b274481 | 914 | static void \ |
4032ef43 BW |
915 | gen4_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ |
916 | REG_WRITE_HEADER; \ | |
917 | __raw_i915_write##x(dev_priv, reg, val); \ | |
0d965301 | 918 | REG_WRITE_FOOTER; \ |
4032ef43 BW |
919 | } |
920 | ||
921 | #define __gen5_write(x) \ | |
922 | static void \ | |
923 | gen5_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
924 | REG_WRITE_HEADER; \ | |
925 | ilk_dummy_write(dev_priv); \ | |
926 | __raw_i915_write##x(dev_priv, reg, val); \ | |
0d965301 | 927 | REG_WRITE_FOOTER; \ |
4032ef43 BW |
928 | } |
929 | ||
930 | #define __gen6_write(x) \ | |
931 | static void \ | |
932 | gen6_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
933 | u32 __fifo_ret = 0; \ | |
934 | REG_WRITE_HEADER; \ | |
935 | if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ | |
936 | __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ | |
937 | } \ | |
938 | __raw_i915_write##x(dev_priv, reg, val); \ | |
939 | if (unlikely(__fifo_ret)) { \ | |
940 | gen6_gt_check_fifodbg(dev_priv); \ | |
941 | } \ | |
0d965301 | 942 | REG_WRITE_FOOTER; \ |
4032ef43 BW |
943 | } |
944 | ||
945 | #define __hsw_write(x) \ | |
946 | static void \ | |
947 | hsw_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
907b28c5 | 948 | u32 __fifo_ret = 0; \ |
5d738795 | 949 | REG_WRITE_HEADER; \ |
907b28c5 CW |
950 | if (NEEDS_FORCE_WAKE((dev_priv), (reg))) { \ |
951 | __fifo_ret = __gen6_gt_wait_for_fifo(dev_priv); \ | |
952 | } \ | |
5978118c | 953 | hsw_unclaimed_reg_debug(dev_priv, reg, false, true); \ |
6af5d92f | 954 | __raw_i915_write##x(dev_priv, reg, val); \ |
907b28c5 CW |
955 | if (unlikely(__fifo_ret)) { \ |
956 | gen6_gt_check_fifodbg(dev_priv); \ | |
957 | } \ | |
5978118c PZ |
958 | hsw_unclaimed_reg_debug(dev_priv, reg, false, false); \ |
959 | hsw_unclaimed_reg_detect(dev_priv); \ | |
0d965301 | 960 | REG_WRITE_FOOTER; \ |
907b28c5 | 961 | } |
3967018e | 962 | |
ab2aa47e BW |
963 | static const u32 gen8_shadowed_regs[] = { |
964 | FORCEWAKE_MT, | |
965 | GEN6_RPNSWREQ, | |
966 | GEN6_RC_VIDEO_FREQ, | |
967 | RING_TAIL(RENDER_RING_BASE), | |
968 | RING_TAIL(GEN6_BSD_RING_BASE), | |
969 | RING_TAIL(VEBOX_RING_BASE), | |
970 | RING_TAIL(BLT_RING_BASE), | |
971 | /* TODO: Other registers are not yet used */ | |
972 | }; | |
973 | ||
974 | static bool is_gen8_shadowed(struct drm_i915_private *dev_priv, u32 reg) | |
975 | { | |
976 | int i; | |
977 | for (i = 0; i < ARRAY_SIZE(gen8_shadowed_regs); i++) | |
978 | if (reg == gen8_shadowed_regs[i]) | |
979 | return true; | |
980 | ||
981 | return false; | |
982 | } | |
983 | ||
984 | #define __gen8_write(x) \ | |
985 | static void \ | |
986 | gen8_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
ab2aa47e | 987 | REG_WRITE_HEADER; \ |
66bc2cab | 988 | hsw_unclaimed_reg_debug(dev_priv, reg, false, true); \ |
e9dbd2b2 MK |
989 | if (reg < 0x40000 && !is_gen8_shadowed(dev_priv, reg)) { \ |
990 | if (dev_priv->uncore.forcewake_count == 0) \ | |
991 | dev_priv->uncore.funcs.force_wake_get(dev_priv, \ | |
992 | FORCEWAKE_ALL); \ | |
993 | __raw_i915_write##x(dev_priv, reg, val); \ | |
994 | if (dev_priv->uncore.forcewake_count == 0) \ | |
995 | dev_priv->uncore.funcs.force_wake_put(dev_priv, \ | |
996 | FORCEWAKE_ALL); \ | |
997 | } else { \ | |
998 | __raw_i915_write##x(dev_priv, reg, val); \ | |
ab2aa47e | 999 | } \ |
66bc2cab PZ |
1000 | hsw_unclaimed_reg_debug(dev_priv, reg, false, false); \ |
1001 | hsw_unclaimed_reg_detect(dev_priv); \ | |
0d965301 | 1002 | REG_WRITE_FOOTER; \ |
ab2aa47e BW |
1003 | } |
1004 | ||
1938e59a D |
1005 | #define __chv_write(x) \ |
1006 | static void \ | |
1007 | chv_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, bool trace) { \ | |
1008 | unsigned fwengine = 0; \ | |
1009 | bool shadowed = is_gen8_shadowed(dev_priv, reg); \ | |
1010 | REG_WRITE_HEADER; \ | |
1011 | if (!shadowed) { \ | |
1012 | if (FORCEWAKE_CHV_RENDER_RANGE_OFFSET(reg)) { \ | |
1013 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
1014 | fwengine = FORCEWAKE_RENDER; \ | |
1015 | } else if (FORCEWAKE_CHV_MEDIA_RANGE_OFFSET(reg)) { \ | |
1016 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
1017 | fwengine = FORCEWAKE_MEDIA; \ | |
1018 | } else if (FORCEWAKE_CHV_COMMON_RANGE_OFFSET(reg)) { \ | |
1019 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
1020 | fwengine |= FORCEWAKE_RENDER; \ | |
1021 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
1022 | fwengine |= FORCEWAKE_MEDIA; \ | |
1023 | } \ | |
1024 | } \ | |
1025 | if (fwengine) \ | |
1026 | dev_priv->uncore.funcs.force_wake_get(dev_priv, fwengine); \ | |
1027 | __raw_i915_write##x(dev_priv, reg, val); \ | |
1028 | if (fwengine) \ | |
1029 | dev_priv->uncore.funcs.force_wake_put(dev_priv, fwengine); \ | |
1030 | REG_WRITE_FOOTER; \ | |
1031 | } | |
1032 | ||
7c859007 ZW |
1033 | static const u32 gen9_shadowed_regs[] = { |
1034 | RING_TAIL(RENDER_RING_BASE), | |
1035 | RING_TAIL(GEN6_BSD_RING_BASE), | |
1036 | RING_TAIL(VEBOX_RING_BASE), | |
1037 | RING_TAIL(BLT_RING_BASE), | |
1038 | FORCEWAKE_BLITTER_GEN9, | |
1039 | FORCEWAKE_RENDER_GEN9, | |
1040 | FORCEWAKE_MEDIA_GEN9, | |
1041 | GEN6_RPNSWREQ, | |
1042 | GEN6_RC_VIDEO_FREQ, | |
1043 | /* TODO: Other registers are not yet used */ | |
1044 | }; | |
1045 | ||
1046 | static bool is_gen9_shadowed(struct drm_i915_private *dev_priv, u32 reg) | |
1047 | { | |
1048 | int i; | |
1049 | for (i = 0; i < ARRAY_SIZE(gen9_shadowed_regs); i++) | |
1050 | if (reg == gen9_shadowed_regs[i]) | |
1051 | return true; | |
1052 | ||
1053 | return false; | |
1054 | } | |
1055 | ||
4597a88a ZW |
1056 | #define __gen9_write(x) \ |
1057 | static void \ | |
1058 | gen9_write##x(struct drm_i915_private *dev_priv, off_t reg, u##x val, \ | |
1059 | bool trace) { \ | |
1060 | REG_WRITE_HEADER; \ | |
7c859007 ZW |
1061 | if (!SKL_NEEDS_FORCE_WAKE((dev_priv), (reg)) || \ |
1062 | is_gen9_shadowed(dev_priv, reg)) { \ | |
4597a88a ZW |
1063 | __raw_i915_write##x(dev_priv, reg, val); \ |
1064 | } else { \ | |
1065 | unsigned fwengine = 0; \ | |
1066 | if (FORCEWAKE_GEN9_RENDER_RANGE_OFFSET(reg)) { \ | |
1067 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
1068 | fwengine = FORCEWAKE_RENDER; \ | |
1069 | } else if (FORCEWAKE_GEN9_MEDIA_RANGE_OFFSET(reg)) { \ | |
1070 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
1071 | fwengine = FORCEWAKE_MEDIA; \ | |
1072 | } else if (FORCEWAKE_GEN9_COMMON_RANGE_OFFSET(reg)) { \ | |
1073 | if (dev_priv->uncore.fw_rendercount == 0) \ | |
1074 | fwengine |= FORCEWAKE_RENDER; \ | |
1075 | if (dev_priv->uncore.fw_mediacount == 0) \ | |
1076 | fwengine |= FORCEWAKE_MEDIA; \ | |
1077 | } else { \ | |
1078 | if (dev_priv->uncore.fw_blittercount == 0) \ | |
1079 | fwengine = FORCEWAKE_BLITTER; \ | |
1080 | } \ | |
1081 | if (fwengine) \ | |
1082 | dev_priv->uncore.funcs.force_wake_get(dev_priv, \ | |
1083 | fwengine); \ | |
1084 | __raw_i915_write##x(dev_priv, reg, val); \ | |
1085 | if (fwengine) \ | |
1086 | dev_priv->uncore.funcs.force_wake_put(dev_priv, \ | |
1087 | fwengine); \ | |
1088 | } \ | |
1089 | REG_WRITE_FOOTER; \ | |
1090 | } | |
1091 | ||
1092 | __gen9_write(8) | |
1093 | __gen9_write(16) | |
1094 | __gen9_write(32) | |
1095 | __gen9_write(64) | |
1938e59a D |
1096 | __chv_write(8) |
1097 | __chv_write(16) | |
1098 | __chv_write(32) | |
1099 | __chv_write(64) | |
ab2aa47e BW |
1100 | __gen8_write(8) |
1101 | __gen8_write(16) | |
1102 | __gen8_write(32) | |
1103 | __gen8_write(64) | |
4032ef43 BW |
1104 | __hsw_write(8) |
1105 | __hsw_write(16) | |
1106 | __hsw_write(32) | |
1107 | __hsw_write(64) | |
1108 | __gen6_write(8) | |
1109 | __gen6_write(16) | |
1110 | __gen6_write(32) | |
1111 | __gen6_write(64) | |
1112 | __gen5_write(8) | |
1113 | __gen5_write(16) | |
1114 | __gen5_write(32) | |
1115 | __gen5_write(64) | |
1116 | __gen4_write(8) | |
1117 | __gen4_write(16) | |
1118 | __gen4_write(32) | |
1119 | __gen4_write(64) | |
1120 | ||
4597a88a | 1121 | #undef __gen9_write |
1938e59a | 1122 | #undef __chv_write |
ab2aa47e | 1123 | #undef __gen8_write |
4032ef43 BW |
1124 | #undef __hsw_write |
1125 | #undef __gen6_write | |
1126 | #undef __gen5_write | |
1127 | #undef __gen4_write | |
0d965301 | 1128 | #undef REG_WRITE_FOOTER |
5d738795 | 1129 | #undef REG_WRITE_HEADER |
907b28c5 | 1130 | |
43d942a7 YZ |
1131 | #define ASSIGN_WRITE_MMIO_VFUNCS(x) \ |
1132 | do { \ | |
1133 | dev_priv->uncore.funcs.mmio_writeb = x##_write8; \ | |
1134 | dev_priv->uncore.funcs.mmio_writew = x##_write16; \ | |
1135 | dev_priv->uncore.funcs.mmio_writel = x##_write32; \ | |
1136 | dev_priv->uncore.funcs.mmio_writeq = x##_write64; \ | |
1137 | } while (0) | |
1138 | ||
1139 | #define ASSIGN_READ_MMIO_VFUNCS(x) \ | |
1140 | do { \ | |
1141 | dev_priv->uncore.funcs.mmio_readb = x##_read8; \ | |
1142 | dev_priv->uncore.funcs.mmio_readw = x##_read16; \ | |
1143 | dev_priv->uncore.funcs.mmio_readl = x##_read32; \ | |
1144 | dev_priv->uncore.funcs.mmio_readq = x##_read64; \ | |
1145 | } while (0) | |
1146 | ||
0b274481 BW |
1147 | void intel_uncore_init(struct drm_device *dev) |
1148 | { | |
1149 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1150 | ||
8232644c CW |
1151 | setup_timer(&dev_priv->uncore.force_wake_timer, |
1152 | gen6_force_wake_timer, (unsigned long)dev_priv); | |
0b274481 | 1153 | |
ed493883 | 1154 | __intel_uncore_early_sanitize(dev, false); |
05efeebd | 1155 | |
38cff0b1 ZW |
1156 | if (IS_GEN9(dev)) { |
1157 | dev_priv->uncore.funcs.force_wake_get = __gen9_force_wake_get; | |
1158 | dev_priv->uncore.funcs.force_wake_put = __gen9_force_wake_put; | |
1159 | } else if (IS_VALLEYVIEW(dev)) { | |
940aece4 D |
1160 | dev_priv->uncore.funcs.force_wake_get = __vlv_force_wake_get; |
1161 | dev_priv->uncore.funcs.force_wake_put = __vlv_force_wake_put; | |
f98cd096 | 1162 | } else if (IS_HASWELL(dev) || IS_BROADWELL(dev)) { |
6a68735a MK |
1163 | dev_priv->uncore.funcs.force_wake_get = __gen7_gt_force_wake_mt_get; |
1164 | dev_priv->uncore.funcs.force_wake_put = __gen7_gt_force_wake_mt_put; | |
0b274481 BW |
1165 | } else if (IS_IVYBRIDGE(dev)) { |
1166 | u32 ecobus; | |
1167 | ||
1168 | /* IVB configs may use multi-threaded forcewake */ | |
1169 | ||
1170 | /* A small trick here - if the bios hasn't configured | |
1171 | * MT forcewake, and if the device is in RC6, then | |
1172 | * force_wake_mt_get will not wake the device and the | |
1173 | * ECOBUS read will return zero. Which will be | |
1174 | * (correctly) interpreted by the test below as MT | |
1175 | * forcewake being disabled. | |
1176 | */ | |
1177 | mutex_lock(&dev->struct_mutex); | |
6a68735a | 1178 | __gen7_gt_force_wake_mt_get(dev_priv, FORCEWAKE_ALL); |
0b274481 | 1179 | ecobus = __raw_i915_read32(dev_priv, ECOBUS); |
6a68735a | 1180 | __gen7_gt_force_wake_mt_put(dev_priv, FORCEWAKE_ALL); |
0b274481 BW |
1181 | mutex_unlock(&dev->struct_mutex); |
1182 | ||
1183 | if (ecobus & FORCEWAKE_MT_ENABLE) { | |
1184 | dev_priv->uncore.funcs.force_wake_get = | |
6a68735a | 1185 | __gen7_gt_force_wake_mt_get; |
0b274481 | 1186 | dev_priv->uncore.funcs.force_wake_put = |
6a68735a | 1187 | __gen7_gt_force_wake_mt_put; |
0b274481 BW |
1188 | } else { |
1189 | DRM_INFO("No MT forcewake available on Ivybridge, this can result in issues\n"); | |
1190 | DRM_INFO("when using vblank-synced partial screen updates.\n"); | |
1191 | dev_priv->uncore.funcs.force_wake_get = | |
1192 | __gen6_gt_force_wake_get; | |
1193 | dev_priv->uncore.funcs.force_wake_put = | |
1194 | __gen6_gt_force_wake_put; | |
1195 | } | |
1196 | } else if (IS_GEN6(dev)) { | |
1197 | dev_priv->uncore.funcs.force_wake_get = | |
1198 | __gen6_gt_force_wake_get; | |
1199 | dev_priv->uncore.funcs.force_wake_put = | |
1200 | __gen6_gt_force_wake_put; | |
1201 | } | |
1202 | ||
3967018e | 1203 | switch (INTEL_INFO(dev)->gen) { |
ab2aa47e | 1204 | default: |
4597a88a ZW |
1205 | WARN_ON(1); |
1206 | return; | |
1207 | case 9: | |
1208 | ASSIGN_WRITE_MMIO_VFUNCS(gen9); | |
1209 | ASSIGN_READ_MMIO_VFUNCS(gen9); | |
1210 | break; | |
1211 | case 8: | |
1938e59a | 1212 | if (IS_CHERRYVIEW(dev)) { |
43d942a7 YZ |
1213 | ASSIGN_WRITE_MMIO_VFUNCS(chv); |
1214 | ASSIGN_READ_MMIO_VFUNCS(chv); | |
1938e59a D |
1215 | |
1216 | } else { | |
43d942a7 YZ |
1217 | ASSIGN_WRITE_MMIO_VFUNCS(gen8); |
1218 | ASSIGN_READ_MMIO_VFUNCS(gen6); | |
1938e59a | 1219 | } |
ab2aa47e | 1220 | break; |
3967018e BW |
1221 | case 7: |
1222 | case 6: | |
4032ef43 | 1223 | if (IS_HASWELL(dev)) { |
43d942a7 | 1224 | ASSIGN_WRITE_MMIO_VFUNCS(hsw); |
4032ef43 | 1225 | } else { |
43d942a7 | 1226 | ASSIGN_WRITE_MMIO_VFUNCS(gen6); |
4032ef43 | 1227 | } |
940aece4 D |
1228 | |
1229 | if (IS_VALLEYVIEW(dev)) { | |
43d942a7 | 1230 | ASSIGN_READ_MMIO_VFUNCS(vlv); |
940aece4 | 1231 | } else { |
43d942a7 | 1232 | ASSIGN_READ_MMIO_VFUNCS(gen6); |
940aece4 | 1233 | } |
3967018e BW |
1234 | break; |
1235 | case 5: | |
43d942a7 YZ |
1236 | ASSIGN_WRITE_MMIO_VFUNCS(gen5); |
1237 | ASSIGN_READ_MMIO_VFUNCS(gen5); | |
3967018e BW |
1238 | break; |
1239 | case 4: | |
1240 | case 3: | |
1241 | case 2: | |
43d942a7 YZ |
1242 | ASSIGN_WRITE_MMIO_VFUNCS(gen4); |
1243 | ASSIGN_READ_MMIO_VFUNCS(gen4); | |
3967018e BW |
1244 | break; |
1245 | } | |
ed493883 ID |
1246 | |
1247 | i915_check_and_clear_faults(dev); | |
0b274481 | 1248 | } |
43d942a7 YZ |
1249 | #undef ASSIGN_WRITE_MMIO_VFUNCS |
1250 | #undef ASSIGN_READ_MMIO_VFUNCS | |
0b274481 BW |
1251 | |
1252 | void intel_uncore_fini(struct drm_device *dev) | |
1253 | { | |
0b274481 BW |
1254 | /* Paranoia: make sure we have disabled everything before we exit. */ |
1255 | intel_uncore_sanitize(dev); | |
0294ae7b | 1256 | intel_uncore_forcewake_reset(dev, false); |
0b274481 BW |
1257 | } |
1258 | ||
af76ae44 DL |
1259 | #define GEN_RANGE(l, h) GENMASK(h, l) |
1260 | ||
907b28c5 CW |
1261 | static const struct register_whitelist { |
1262 | uint64_t offset; | |
1263 | uint32_t size; | |
af76ae44 DL |
1264 | /* supported gens, 0x10 for 4, 0x30 for 4 and 5, etc. */ |
1265 | uint32_t gen_bitmask; | |
907b28c5 | 1266 | } whitelist[] = { |
c3f59a67 | 1267 | { RING_TIMESTAMP(RENDER_RING_BASE), 8, GEN_RANGE(4, 9) }, |
907b28c5 CW |
1268 | }; |
1269 | ||
1270 | int i915_reg_read_ioctl(struct drm_device *dev, | |
1271 | void *data, struct drm_file *file) | |
1272 | { | |
1273 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1274 | struct drm_i915_reg_read *reg = data; | |
1275 | struct register_whitelist const *entry = whitelist; | |
cf67c70f | 1276 | int i, ret = 0; |
907b28c5 CW |
1277 | |
1278 | for (i = 0; i < ARRAY_SIZE(whitelist); i++, entry++) { | |
1279 | if (entry->offset == reg->offset && | |
1280 | (1 << INTEL_INFO(dev)->gen & entry->gen_bitmask)) | |
1281 | break; | |
1282 | } | |
1283 | ||
1284 | if (i == ARRAY_SIZE(whitelist)) | |
1285 | return -EINVAL; | |
1286 | ||
cf67c70f PZ |
1287 | intel_runtime_pm_get(dev_priv); |
1288 | ||
907b28c5 CW |
1289 | switch (entry->size) { |
1290 | case 8: | |
1291 | reg->val = I915_READ64(reg->offset); | |
1292 | break; | |
1293 | case 4: | |
1294 | reg->val = I915_READ(reg->offset); | |
1295 | break; | |
1296 | case 2: | |
1297 | reg->val = I915_READ16(reg->offset); | |
1298 | break; | |
1299 | case 1: | |
1300 | reg->val = I915_READ8(reg->offset); | |
1301 | break; | |
1302 | default: | |
1303 | WARN_ON(1); | |
cf67c70f PZ |
1304 | ret = -EINVAL; |
1305 | goto out; | |
907b28c5 CW |
1306 | } |
1307 | ||
cf67c70f PZ |
1308 | out: |
1309 | intel_runtime_pm_put(dev_priv); | |
1310 | return ret; | |
907b28c5 CW |
1311 | } |
1312 | ||
b6359918 MK |
1313 | int i915_get_reset_stats_ioctl(struct drm_device *dev, |
1314 | void *data, struct drm_file *file) | |
1315 | { | |
1316 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1317 | struct drm_i915_reset_stats *args = data; | |
1318 | struct i915_ctx_hang_stats *hs; | |
273497e5 | 1319 | struct intel_context *ctx; |
b6359918 MK |
1320 | int ret; |
1321 | ||
661df041 MK |
1322 | if (args->flags || args->pad) |
1323 | return -EINVAL; | |
1324 | ||
821d66dd | 1325 | if (args->ctx_id == DEFAULT_CONTEXT_HANDLE && !capable(CAP_SYS_ADMIN)) |
b6359918 MK |
1326 | return -EPERM; |
1327 | ||
1328 | ret = mutex_lock_interruptible(&dev->struct_mutex); | |
1329 | if (ret) | |
1330 | return ret; | |
1331 | ||
41bde553 BW |
1332 | ctx = i915_gem_context_get(file->driver_priv, args->ctx_id); |
1333 | if (IS_ERR(ctx)) { | |
b6359918 | 1334 | mutex_unlock(&dev->struct_mutex); |
41bde553 | 1335 | return PTR_ERR(ctx); |
b6359918 | 1336 | } |
41bde553 | 1337 | hs = &ctx->hang_stats; |
b6359918 MK |
1338 | |
1339 | if (capable(CAP_SYS_ADMIN)) | |
1340 | args->reset_count = i915_reset_count(&dev_priv->gpu_error); | |
1341 | else | |
1342 | args->reset_count = 0; | |
1343 | ||
1344 | args->batch_active = hs->batch_active; | |
1345 | args->batch_pending = hs->batch_pending; | |
1346 | ||
1347 | mutex_unlock(&dev->struct_mutex); | |
1348 | ||
1349 | return 0; | |
1350 | } | |
1351 | ||
59ea9054 | 1352 | static int i915_reset_complete(struct drm_device *dev) |
907b28c5 CW |
1353 | { |
1354 | u8 gdrst; | |
59ea9054 | 1355 | pci_read_config_byte(dev->pdev, I915_GDRST, &gdrst); |
73bbf6bd | 1356 | return (gdrst & GRDOM_RESET_STATUS) == 0; |
907b28c5 CW |
1357 | } |
1358 | ||
59ea9054 | 1359 | static int i915_do_reset(struct drm_device *dev) |
907b28c5 | 1360 | { |
73bbf6bd | 1361 | /* assert reset for at least 20 usec */ |
59ea9054 | 1362 | pci_write_config_byte(dev->pdev, I915_GDRST, GRDOM_RESET_ENABLE); |
73bbf6bd | 1363 | udelay(20); |
59ea9054 | 1364 | pci_write_config_byte(dev->pdev, I915_GDRST, 0); |
907b28c5 | 1365 | |
59ea9054 | 1366 | return wait_for(i915_reset_complete(dev), 500); |
73bbf6bd VS |
1367 | } |
1368 | ||
1369 | static int g4x_reset_complete(struct drm_device *dev) | |
1370 | { | |
1371 | u8 gdrst; | |
59ea9054 | 1372 | pci_read_config_byte(dev->pdev, I915_GDRST, &gdrst); |
73bbf6bd | 1373 | return (gdrst & GRDOM_RESET_ENABLE) == 0; |
907b28c5 CW |
1374 | } |
1375 | ||
408d4b9e VS |
1376 | static int g33_do_reset(struct drm_device *dev) |
1377 | { | |
408d4b9e VS |
1378 | pci_write_config_byte(dev->pdev, I915_GDRST, GRDOM_RESET_ENABLE); |
1379 | return wait_for(g4x_reset_complete(dev), 500); | |
1380 | } | |
1381 | ||
fa4f53c4 VS |
1382 | static int g4x_do_reset(struct drm_device *dev) |
1383 | { | |
1384 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1385 | int ret; | |
1386 | ||
59ea9054 | 1387 | pci_write_config_byte(dev->pdev, I915_GDRST, |
fa4f53c4 | 1388 | GRDOM_RENDER | GRDOM_RESET_ENABLE); |
73bbf6bd | 1389 | ret = wait_for(g4x_reset_complete(dev), 500); |
fa4f53c4 VS |
1390 | if (ret) |
1391 | return ret; | |
1392 | ||
1393 | /* WaVcpClkGateDisableForMediaReset:ctg,elk */ | |
1394 | I915_WRITE(VDECCLK_GATE_D, I915_READ(VDECCLK_GATE_D) | VCP_UNIT_CLOCK_GATE_DISABLE); | |
1395 | POSTING_READ(VDECCLK_GATE_D); | |
1396 | ||
59ea9054 | 1397 | pci_write_config_byte(dev->pdev, I915_GDRST, |
fa4f53c4 | 1398 | GRDOM_MEDIA | GRDOM_RESET_ENABLE); |
73bbf6bd | 1399 | ret = wait_for(g4x_reset_complete(dev), 500); |
fa4f53c4 VS |
1400 | if (ret) |
1401 | return ret; | |
1402 | ||
1403 | /* WaVcpClkGateDisableForMediaReset:ctg,elk */ | |
1404 | I915_WRITE(VDECCLK_GATE_D, I915_READ(VDECCLK_GATE_D) & ~VCP_UNIT_CLOCK_GATE_DISABLE); | |
1405 | POSTING_READ(VDECCLK_GATE_D); | |
1406 | ||
59ea9054 | 1407 | pci_write_config_byte(dev->pdev, I915_GDRST, 0); |
fa4f53c4 VS |
1408 | |
1409 | return 0; | |
1410 | } | |
1411 | ||
907b28c5 CW |
1412 | static int ironlake_do_reset(struct drm_device *dev) |
1413 | { | |
1414 | struct drm_i915_private *dev_priv = dev->dev_private; | |
907b28c5 CW |
1415 | int ret; |
1416 | ||
907b28c5 | 1417 | I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, |
0f08ffd6 | 1418 | ILK_GRDOM_RENDER | ILK_GRDOM_RESET_ENABLE); |
f67deb72 | 1419 | ret = wait_for((I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & |
b3a3f03d | 1420 | ILK_GRDOM_RESET_ENABLE) == 0, 500); |
907b28c5 CW |
1421 | if (ret) |
1422 | return ret; | |
1423 | ||
907b28c5 | 1424 | I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, |
0f08ffd6 | 1425 | ILK_GRDOM_MEDIA | ILK_GRDOM_RESET_ENABLE); |
9aa7250f VS |
1426 | ret = wait_for((I915_READ(MCHBAR_MIRROR_BASE + ILK_GDSR) & |
1427 | ILK_GRDOM_RESET_ENABLE) == 0, 500); | |
1428 | if (ret) | |
1429 | return ret; | |
1430 | ||
1431 | I915_WRITE(MCHBAR_MIRROR_BASE + ILK_GDSR, 0); | |
1432 | ||
1433 | return 0; | |
907b28c5 CW |
1434 | } |
1435 | ||
1436 | static int gen6_do_reset(struct drm_device *dev) | |
1437 | { | |
1438 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1439 | int ret; | |
907b28c5 CW |
1440 | |
1441 | /* Reset the chip */ | |
1442 | ||
1443 | /* GEN6_GDRST is not in the gt power well, no need to check | |
1444 | * for fifo space for the write or forcewake the chip for | |
1445 | * the read | |
1446 | */ | |
6af5d92f | 1447 | __raw_i915_write32(dev_priv, GEN6_GDRST, GEN6_GRDOM_FULL); |
907b28c5 CW |
1448 | |
1449 | /* Spin waiting for the device to ack the reset request */ | |
6af5d92f | 1450 | ret = wait_for((__raw_i915_read32(dev_priv, GEN6_GDRST) & GEN6_GRDOM_FULL) == 0, 500); |
907b28c5 | 1451 | |
0294ae7b | 1452 | intel_uncore_forcewake_reset(dev, true); |
5babf0fc | 1453 | |
907b28c5 CW |
1454 | return ret; |
1455 | } | |
1456 | ||
1457 | int intel_gpu_reset(struct drm_device *dev) | |
1458 | { | |
542c184f RB |
1459 | if (INTEL_INFO(dev)->gen >= 6) |
1460 | return gen6_do_reset(dev); | |
1461 | else if (IS_GEN5(dev)) | |
1462 | return ironlake_do_reset(dev); | |
1463 | else if (IS_G4X(dev)) | |
1464 | return g4x_do_reset(dev); | |
408d4b9e VS |
1465 | else if (IS_G33(dev)) |
1466 | return g33_do_reset(dev); | |
1467 | else if (INTEL_INFO(dev)->gen >= 3) | |
59ea9054 | 1468 | return i915_do_reset(dev); |
542c184f RB |
1469 | else |
1470 | return -ENODEV; | |
907b28c5 CW |
1471 | } |
1472 | ||
907b28c5 CW |
1473 | void intel_uncore_check_errors(struct drm_device *dev) |
1474 | { | |
1475 | struct drm_i915_private *dev_priv = dev->dev_private; | |
1476 | ||
1477 | if (HAS_FPGA_DBG_UNCLAIMED(dev) && | |
6af5d92f | 1478 | (__raw_i915_read32(dev_priv, FPGA_DBG) & FPGA_DBG_RM_NOCLAIM)) { |
907b28c5 | 1479 | DRM_ERROR("Unclaimed register before interrupt\n"); |
6af5d92f | 1480 | __raw_i915_write32(dev_priv, FPGA_DBG, FPGA_DBG_RM_NOCLAIM); |
907b28c5 CW |
1481 | } |
1482 | } |