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62fdfeaf EA |
1 | /* |
2 | * Copyright © 2008-2010 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 | * Authors: | |
24 | * Eric Anholt <eric@anholt.net> | |
25 | * Zou Nan hai <nanhai.zou@intel.com> | |
26 | * Xiang Hai hao<haihao.xiang@intel.com> | |
27 | * | |
28 | */ | |
29 | ||
760285e7 | 30 | #include <drm/drmP.h> |
62fdfeaf | 31 | #include "i915_drv.h" |
760285e7 | 32 | #include <drm/i915_drm.h> |
62fdfeaf | 33 | #include "i915_trace.h" |
881f47b6 | 34 | #include "intel_drv.h" |
62fdfeaf | 35 | |
8d315287 JB |
36 | /* |
37 | * 965+ support PIPE_CONTROL commands, which provide finer grained control | |
38 | * over cache flushing. | |
39 | */ | |
40 | struct pipe_control { | |
41 | struct drm_i915_gem_object *obj; | |
42 | volatile u32 *cpu_page; | |
43 | u32 gtt_offset; | |
44 | }; | |
45 | ||
c7dca47b CW |
46 | static inline int ring_space(struct intel_ring_buffer *ring) |
47 | { | |
48 | int space = (ring->head & HEAD_ADDR) - (ring->tail + 8); | |
49 | if (space < 0) | |
50 | space += ring->size; | |
51 | return space; | |
52 | } | |
53 | ||
b72f3acb | 54 | static int |
46f0f8d1 CW |
55 | gen2_render_ring_flush(struct intel_ring_buffer *ring, |
56 | u32 invalidate_domains, | |
57 | u32 flush_domains) | |
58 | { | |
59 | u32 cmd; | |
60 | int ret; | |
61 | ||
62 | cmd = MI_FLUSH; | |
31b14c9f | 63 | if (((invalidate_domains|flush_domains) & I915_GEM_DOMAIN_RENDER) == 0) |
46f0f8d1 CW |
64 | cmd |= MI_NO_WRITE_FLUSH; |
65 | ||
66 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) | |
67 | cmd |= MI_READ_FLUSH; | |
68 | ||
69 | ret = intel_ring_begin(ring, 2); | |
70 | if (ret) | |
71 | return ret; | |
72 | ||
73 | intel_ring_emit(ring, cmd); | |
74 | intel_ring_emit(ring, MI_NOOP); | |
75 | intel_ring_advance(ring); | |
76 | ||
77 | return 0; | |
78 | } | |
79 | ||
80 | static int | |
81 | gen4_render_ring_flush(struct intel_ring_buffer *ring, | |
82 | u32 invalidate_domains, | |
83 | u32 flush_domains) | |
62fdfeaf | 84 | { |
78501eac | 85 | struct drm_device *dev = ring->dev; |
6f392d54 | 86 | u32 cmd; |
b72f3acb | 87 | int ret; |
6f392d54 | 88 | |
36d527de CW |
89 | /* |
90 | * read/write caches: | |
91 | * | |
92 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is | |
93 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is | |
94 | * also flushed at 2d versus 3d pipeline switches. | |
95 | * | |
96 | * read-only caches: | |
97 | * | |
98 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if | |
99 | * MI_READ_FLUSH is set, and is always flushed on 965. | |
100 | * | |
101 | * I915_GEM_DOMAIN_COMMAND may not exist? | |
102 | * | |
103 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is | |
104 | * invalidated when MI_EXE_FLUSH is set. | |
105 | * | |
106 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is | |
107 | * invalidated with every MI_FLUSH. | |
108 | * | |
109 | * TLBs: | |
110 | * | |
111 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND | |
112 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and | |
113 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER | |
114 | * are flushed at any MI_FLUSH. | |
115 | */ | |
116 | ||
117 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; | |
46f0f8d1 | 118 | if ((invalidate_domains|flush_domains) & I915_GEM_DOMAIN_RENDER) |
36d527de | 119 | cmd &= ~MI_NO_WRITE_FLUSH; |
36d527de CW |
120 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) |
121 | cmd |= MI_EXE_FLUSH; | |
62fdfeaf | 122 | |
36d527de CW |
123 | if (invalidate_domains & I915_GEM_DOMAIN_COMMAND && |
124 | (IS_G4X(dev) || IS_GEN5(dev))) | |
125 | cmd |= MI_INVALIDATE_ISP; | |
70eac33e | 126 | |
36d527de CW |
127 | ret = intel_ring_begin(ring, 2); |
128 | if (ret) | |
129 | return ret; | |
b72f3acb | 130 | |
36d527de CW |
131 | intel_ring_emit(ring, cmd); |
132 | intel_ring_emit(ring, MI_NOOP); | |
133 | intel_ring_advance(ring); | |
b72f3acb CW |
134 | |
135 | return 0; | |
8187a2b7 ZN |
136 | } |
137 | ||
8d315287 JB |
138 | /** |
139 | * Emits a PIPE_CONTROL with a non-zero post-sync operation, for | |
140 | * implementing two workarounds on gen6. From section 1.4.7.1 | |
141 | * "PIPE_CONTROL" of the Sandy Bridge PRM volume 2 part 1: | |
142 | * | |
143 | * [DevSNB-C+{W/A}] Before any depth stall flush (including those | |
144 | * produced by non-pipelined state commands), software needs to first | |
145 | * send a PIPE_CONTROL with no bits set except Post-Sync Operation != | |
146 | * 0. | |
147 | * | |
148 | * [Dev-SNB{W/A}]: Before a PIPE_CONTROL with Write Cache Flush Enable | |
149 | * =1, a PIPE_CONTROL with any non-zero post-sync-op is required. | |
150 | * | |
151 | * And the workaround for these two requires this workaround first: | |
152 | * | |
153 | * [Dev-SNB{W/A}]: Pipe-control with CS-stall bit set must be sent | |
154 | * BEFORE the pipe-control with a post-sync op and no write-cache | |
155 | * flushes. | |
156 | * | |
157 | * And this last workaround is tricky because of the requirements on | |
158 | * that bit. From section 1.4.7.2.3 "Stall" of the Sandy Bridge PRM | |
159 | * volume 2 part 1: | |
160 | * | |
161 | * "1 of the following must also be set: | |
162 | * - Render Target Cache Flush Enable ([12] of DW1) | |
163 | * - Depth Cache Flush Enable ([0] of DW1) | |
164 | * - Stall at Pixel Scoreboard ([1] of DW1) | |
165 | * - Depth Stall ([13] of DW1) | |
166 | * - Post-Sync Operation ([13] of DW1) | |
167 | * - Notify Enable ([8] of DW1)" | |
168 | * | |
169 | * The cache flushes require the workaround flush that triggered this | |
170 | * one, so we can't use it. Depth stall would trigger the same. | |
171 | * Post-sync nonzero is what triggered this second workaround, so we | |
172 | * can't use that one either. Notify enable is IRQs, which aren't | |
173 | * really our business. That leaves only stall at scoreboard. | |
174 | */ | |
175 | static int | |
176 | intel_emit_post_sync_nonzero_flush(struct intel_ring_buffer *ring) | |
177 | { | |
178 | struct pipe_control *pc = ring->private; | |
179 | u32 scratch_addr = pc->gtt_offset + 128; | |
180 | int ret; | |
181 | ||
182 | ||
183 | ret = intel_ring_begin(ring, 6); | |
184 | if (ret) | |
185 | return ret; | |
186 | ||
187 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(5)); | |
188 | intel_ring_emit(ring, PIPE_CONTROL_CS_STALL | | |
189 | PIPE_CONTROL_STALL_AT_SCOREBOARD); | |
190 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); /* address */ | |
191 | intel_ring_emit(ring, 0); /* low dword */ | |
192 | intel_ring_emit(ring, 0); /* high dword */ | |
193 | intel_ring_emit(ring, MI_NOOP); | |
194 | intel_ring_advance(ring); | |
195 | ||
196 | ret = intel_ring_begin(ring, 6); | |
197 | if (ret) | |
198 | return ret; | |
199 | ||
200 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(5)); | |
201 | intel_ring_emit(ring, PIPE_CONTROL_QW_WRITE); | |
202 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); /* address */ | |
203 | intel_ring_emit(ring, 0); | |
204 | intel_ring_emit(ring, 0); | |
205 | intel_ring_emit(ring, MI_NOOP); | |
206 | intel_ring_advance(ring); | |
207 | ||
208 | return 0; | |
209 | } | |
210 | ||
211 | static int | |
212 | gen6_render_ring_flush(struct intel_ring_buffer *ring, | |
213 | u32 invalidate_domains, u32 flush_domains) | |
214 | { | |
215 | u32 flags = 0; | |
216 | struct pipe_control *pc = ring->private; | |
217 | u32 scratch_addr = pc->gtt_offset + 128; | |
218 | int ret; | |
219 | ||
b3111509 PZ |
220 | /* Force SNB workarounds for PIPE_CONTROL flushes */ |
221 | ret = intel_emit_post_sync_nonzero_flush(ring); | |
222 | if (ret) | |
223 | return ret; | |
224 | ||
8d315287 JB |
225 | /* Just flush everything. Experiments have shown that reducing the |
226 | * number of bits based on the write domains has little performance | |
227 | * impact. | |
228 | */ | |
7d54a904 CW |
229 | if (flush_domains) { |
230 | flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; | |
231 | flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; | |
232 | /* | |
233 | * Ensure that any following seqno writes only happen | |
234 | * when the render cache is indeed flushed. | |
235 | */ | |
97f209bc | 236 | flags |= PIPE_CONTROL_CS_STALL; |
7d54a904 CW |
237 | } |
238 | if (invalidate_domains) { | |
239 | flags |= PIPE_CONTROL_TLB_INVALIDATE; | |
240 | flags |= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE; | |
241 | flags |= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE; | |
242 | flags |= PIPE_CONTROL_VF_CACHE_INVALIDATE; | |
243 | flags |= PIPE_CONTROL_CONST_CACHE_INVALIDATE; | |
244 | flags |= PIPE_CONTROL_STATE_CACHE_INVALIDATE; | |
245 | /* | |
246 | * TLB invalidate requires a post-sync write. | |
247 | */ | |
3ac78313 | 248 | flags |= PIPE_CONTROL_QW_WRITE | PIPE_CONTROL_CS_STALL; |
7d54a904 | 249 | } |
8d315287 | 250 | |
6c6cf5aa | 251 | ret = intel_ring_begin(ring, 4); |
8d315287 JB |
252 | if (ret) |
253 | return ret; | |
254 | ||
6c6cf5aa | 255 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4)); |
8d315287 JB |
256 | intel_ring_emit(ring, flags); |
257 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); | |
6c6cf5aa | 258 | intel_ring_emit(ring, 0); |
8d315287 JB |
259 | intel_ring_advance(ring); |
260 | ||
261 | return 0; | |
262 | } | |
263 | ||
f3987631 PZ |
264 | static int |
265 | gen7_render_ring_cs_stall_wa(struct intel_ring_buffer *ring) | |
266 | { | |
267 | int ret; | |
268 | ||
269 | ret = intel_ring_begin(ring, 4); | |
270 | if (ret) | |
271 | return ret; | |
272 | ||
273 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4)); | |
274 | intel_ring_emit(ring, PIPE_CONTROL_CS_STALL | | |
275 | PIPE_CONTROL_STALL_AT_SCOREBOARD); | |
276 | intel_ring_emit(ring, 0); | |
277 | intel_ring_emit(ring, 0); | |
278 | intel_ring_advance(ring); | |
279 | ||
280 | return 0; | |
281 | } | |
282 | ||
4772eaeb PZ |
283 | static int |
284 | gen7_render_ring_flush(struct intel_ring_buffer *ring, | |
285 | u32 invalidate_domains, u32 flush_domains) | |
286 | { | |
287 | u32 flags = 0; | |
288 | struct pipe_control *pc = ring->private; | |
289 | u32 scratch_addr = pc->gtt_offset + 128; | |
290 | int ret; | |
291 | ||
f3987631 PZ |
292 | /* |
293 | * Ensure that any following seqno writes only happen when the render | |
294 | * cache is indeed flushed. | |
295 | * | |
296 | * Workaround: 4th PIPE_CONTROL command (except the ones with only | |
297 | * read-cache invalidate bits set) must have the CS_STALL bit set. We | |
298 | * don't try to be clever and just set it unconditionally. | |
299 | */ | |
300 | flags |= PIPE_CONTROL_CS_STALL; | |
301 | ||
4772eaeb PZ |
302 | /* Just flush everything. Experiments have shown that reducing the |
303 | * number of bits based on the write domains has little performance | |
304 | * impact. | |
305 | */ | |
306 | if (flush_domains) { | |
307 | flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; | |
308 | flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; | |
4772eaeb PZ |
309 | } |
310 | if (invalidate_domains) { | |
311 | flags |= PIPE_CONTROL_TLB_INVALIDATE; | |
312 | flags |= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE; | |
313 | flags |= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE; | |
314 | flags |= PIPE_CONTROL_VF_CACHE_INVALIDATE; | |
315 | flags |= PIPE_CONTROL_CONST_CACHE_INVALIDATE; | |
316 | flags |= PIPE_CONTROL_STATE_CACHE_INVALIDATE; | |
317 | /* | |
318 | * TLB invalidate requires a post-sync write. | |
319 | */ | |
320 | flags |= PIPE_CONTROL_QW_WRITE; | |
f3987631 PZ |
321 | |
322 | /* Workaround: we must issue a pipe_control with CS-stall bit | |
323 | * set before a pipe_control command that has the state cache | |
324 | * invalidate bit set. */ | |
325 | gen7_render_ring_cs_stall_wa(ring); | |
4772eaeb PZ |
326 | } |
327 | ||
328 | ret = intel_ring_begin(ring, 4); | |
329 | if (ret) | |
330 | return ret; | |
331 | ||
332 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4)); | |
333 | intel_ring_emit(ring, flags); | |
334 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); | |
335 | intel_ring_emit(ring, 0); | |
336 | intel_ring_advance(ring); | |
337 | ||
338 | return 0; | |
339 | } | |
340 | ||
78501eac | 341 | static void ring_write_tail(struct intel_ring_buffer *ring, |
297b0c5b | 342 | u32 value) |
d46eefa2 | 343 | { |
78501eac | 344 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
297b0c5b | 345 | I915_WRITE_TAIL(ring, value); |
d46eefa2 XH |
346 | } |
347 | ||
78501eac | 348 | u32 intel_ring_get_active_head(struct intel_ring_buffer *ring) |
8187a2b7 | 349 | { |
78501eac CW |
350 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
351 | u32 acthd_reg = INTEL_INFO(ring->dev)->gen >= 4 ? | |
3d281d8c | 352 | RING_ACTHD(ring->mmio_base) : ACTHD; |
8187a2b7 ZN |
353 | |
354 | return I915_READ(acthd_reg); | |
355 | } | |
356 | ||
78501eac | 357 | static int init_ring_common(struct intel_ring_buffer *ring) |
8187a2b7 | 358 | { |
b7884eb4 DV |
359 | struct drm_device *dev = ring->dev; |
360 | drm_i915_private_t *dev_priv = dev->dev_private; | |
05394f39 | 361 | struct drm_i915_gem_object *obj = ring->obj; |
b7884eb4 | 362 | int ret = 0; |
8187a2b7 | 363 | u32 head; |
8187a2b7 | 364 | |
b7884eb4 DV |
365 | if (HAS_FORCE_WAKE(dev)) |
366 | gen6_gt_force_wake_get(dev_priv); | |
367 | ||
8187a2b7 | 368 | /* Stop the ring if it's running. */ |
7f2ab699 | 369 | I915_WRITE_CTL(ring, 0); |
570ef608 | 370 | I915_WRITE_HEAD(ring, 0); |
78501eac | 371 | ring->write_tail(ring, 0); |
8187a2b7 | 372 | |
570ef608 | 373 | head = I915_READ_HEAD(ring) & HEAD_ADDR; |
8187a2b7 ZN |
374 | |
375 | /* G45 ring initialization fails to reset head to zero */ | |
376 | if (head != 0) { | |
6fd0d56e CW |
377 | DRM_DEBUG_KMS("%s head not reset to zero " |
378 | "ctl %08x head %08x tail %08x start %08x\n", | |
379 | ring->name, | |
380 | I915_READ_CTL(ring), | |
381 | I915_READ_HEAD(ring), | |
382 | I915_READ_TAIL(ring), | |
383 | I915_READ_START(ring)); | |
8187a2b7 | 384 | |
570ef608 | 385 | I915_WRITE_HEAD(ring, 0); |
8187a2b7 | 386 | |
6fd0d56e CW |
387 | if (I915_READ_HEAD(ring) & HEAD_ADDR) { |
388 | DRM_ERROR("failed to set %s head to zero " | |
389 | "ctl %08x head %08x tail %08x start %08x\n", | |
390 | ring->name, | |
391 | I915_READ_CTL(ring), | |
392 | I915_READ_HEAD(ring), | |
393 | I915_READ_TAIL(ring), | |
394 | I915_READ_START(ring)); | |
395 | } | |
8187a2b7 ZN |
396 | } |
397 | ||
0d8957c8 DV |
398 | /* Initialize the ring. This must happen _after_ we've cleared the ring |
399 | * registers with the above sequence (the readback of the HEAD registers | |
400 | * also enforces ordering), otherwise the hw might lose the new ring | |
401 | * register values. */ | |
402 | I915_WRITE_START(ring, obj->gtt_offset); | |
7f2ab699 | 403 | I915_WRITE_CTL(ring, |
ae69b42a | 404 | ((ring->size - PAGE_SIZE) & RING_NR_PAGES) |
5d031e5b | 405 | | RING_VALID); |
8187a2b7 | 406 | |
8187a2b7 | 407 | /* If the head is still not zero, the ring is dead */ |
f01db988 SP |
408 | if (wait_for((I915_READ_CTL(ring) & RING_VALID) != 0 && |
409 | I915_READ_START(ring) == obj->gtt_offset && | |
410 | (I915_READ_HEAD(ring) & HEAD_ADDR) == 0, 50)) { | |
e74cfed5 CW |
411 | DRM_ERROR("%s initialization failed " |
412 | "ctl %08x head %08x tail %08x start %08x\n", | |
413 | ring->name, | |
414 | I915_READ_CTL(ring), | |
415 | I915_READ_HEAD(ring), | |
416 | I915_READ_TAIL(ring), | |
417 | I915_READ_START(ring)); | |
b7884eb4 DV |
418 | ret = -EIO; |
419 | goto out; | |
8187a2b7 ZN |
420 | } |
421 | ||
78501eac CW |
422 | if (!drm_core_check_feature(ring->dev, DRIVER_MODESET)) |
423 | i915_kernel_lost_context(ring->dev); | |
8187a2b7 | 424 | else { |
c7dca47b | 425 | ring->head = I915_READ_HEAD(ring); |
870e86dd | 426 | ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR; |
c7dca47b | 427 | ring->space = ring_space(ring); |
c3b20037 | 428 | ring->last_retired_head = -1; |
8187a2b7 | 429 | } |
1ec14ad3 | 430 | |
b7884eb4 DV |
431 | out: |
432 | if (HAS_FORCE_WAKE(dev)) | |
433 | gen6_gt_force_wake_put(dev_priv); | |
434 | ||
435 | return ret; | |
8187a2b7 ZN |
436 | } |
437 | ||
c6df541c CW |
438 | static int |
439 | init_pipe_control(struct intel_ring_buffer *ring) | |
440 | { | |
441 | struct pipe_control *pc; | |
442 | struct drm_i915_gem_object *obj; | |
443 | int ret; | |
444 | ||
445 | if (ring->private) | |
446 | return 0; | |
447 | ||
448 | pc = kmalloc(sizeof(*pc), GFP_KERNEL); | |
449 | if (!pc) | |
450 | return -ENOMEM; | |
451 | ||
452 | obj = i915_gem_alloc_object(ring->dev, 4096); | |
453 | if (obj == NULL) { | |
454 | DRM_ERROR("Failed to allocate seqno page\n"); | |
455 | ret = -ENOMEM; | |
456 | goto err; | |
457 | } | |
e4ffd173 CW |
458 | |
459 | i915_gem_object_set_cache_level(obj, I915_CACHE_LLC); | |
c6df541c | 460 | |
86a1ee26 | 461 | ret = i915_gem_object_pin(obj, 4096, true, false); |
c6df541c CW |
462 | if (ret) |
463 | goto err_unref; | |
464 | ||
465 | pc->gtt_offset = obj->gtt_offset; | |
9da3da66 | 466 | pc->cpu_page = kmap(sg_page(obj->pages->sgl)); |
c6df541c CW |
467 | if (pc->cpu_page == NULL) |
468 | goto err_unpin; | |
469 | ||
470 | pc->obj = obj; | |
471 | ring->private = pc; | |
472 | return 0; | |
473 | ||
474 | err_unpin: | |
475 | i915_gem_object_unpin(obj); | |
476 | err_unref: | |
477 | drm_gem_object_unreference(&obj->base); | |
478 | err: | |
479 | kfree(pc); | |
480 | return ret; | |
481 | } | |
482 | ||
483 | static void | |
484 | cleanup_pipe_control(struct intel_ring_buffer *ring) | |
485 | { | |
486 | struct pipe_control *pc = ring->private; | |
487 | struct drm_i915_gem_object *obj; | |
488 | ||
489 | if (!ring->private) | |
490 | return; | |
491 | ||
492 | obj = pc->obj; | |
9da3da66 CW |
493 | |
494 | kunmap(sg_page(obj->pages->sgl)); | |
c6df541c CW |
495 | i915_gem_object_unpin(obj); |
496 | drm_gem_object_unreference(&obj->base); | |
497 | ||
498 | kfree(pc); | |
499 | ring->private = NULL; | |
500 | } | |
501 | ||
78501eac | 502 | static int init_render_ring(struct intel_ring_buffer *ring) |
8187a2b7 | 503 | { |
78501eac | 504 | struct drm_device *dev = ring->dev; |
1ec14ad3 | 505 | struct drm_i915_private *dev_priv = dev->dev_private; |
78501eac | 506 | int ret = init_ring_common(ring); |
a69ffdbf | 507 | |
a6c45cf0 | 508 | if (INTEL_INFO(dev)->gen > 3) { |
6b26c86d | 509 | I915_WRITE(MI_MODE, _MASKED_BIT_ENABLE(VS_TIMER_DISPATCH)); |
b095cd0a JB |
510 | if (IS_GEN7(dev)) |
511 | I915_WRITE(GFX_MODE_GEN7, | |
6b26c86d DV |
512 | _MASKED_BIT_DISABLE(GFX_TLB_INVALIDATE_ALWAYS) | |
513 | _MASKED_BIT_ENABLE(GFX_REPLAY_MODE)); | |
8187a2b7 | 514 | } |
78501eac | 515 | |
8d315287 | 516 | if (INTEL_INFO(dev)->gen >= 5) { |
c6df541c CW |
517 | ret = init_pipe_control(ring); |
518 | if (ret) | |
519 | return ret; | |
520 | } | |
521 | ||
5e13a0c5 | 522 | if (IS_GEN6(dev)) { |
3a69ddd6 KG |
523 | /* From the Sandybridge PRM, volume 1 part 3, page 24: |
524 | * "If this bit is set, STCunit will have LRA as replacement | |
525 | * policy. [...] This bit must be reset. LRA replacement | |
526 | * policy is not supported." | |
527 | */ | |
528 | I915_WRITE(CACHE_MODE_0, | |
5e13a0c5 | 529 | _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB)); |
12b0286f BW |
530 | |
531 | /* This is not explicitly set for GEN6, so read the register. | |
532 | * see intel_ring_mi_set_context() for why we care. | |
533 | * TODO: consider explicitly setting the bit for GEN5 | |
534 | */ | |
535 | ring->itlb_before_ctx_switch = | |
536 | !!(I915_READ(GFX_MODE) & GFX_TLB_INVALIDATE_ALWAYS); | |
84f9f938 BW |
537 | } |
538 | ||
6b26c86d DV |
539 | if (INTEL_INFO(dev)->gen >= 6) |
540 | I915_WRITE(INSTPM, _MASKED_BIT_ENABLE(INSTPM_FORCE_ORDERING)); | |
84f9f938 | 541 | |
e1ef7cc2 | 542 | if (HAS_L3_GPU_CACHE(dev)) |
15b9f80e BW |
543 | I915_WRITE_IMR(ring, ~GEN6_RENDER_L3_PARITY_ERROR); |
544 | ||
8187a2b7 ZN |
545 | return ret; |
546 | } | |
547 | ||
c6df541c CW |
548 | static void render_ring_cleanup(struct intel_ring_buffer *ring) |
549 | { | |
550 | if (!ring->private) | |
551 | return; | |
552 | ||
553 | cleanup_pipe_control(ring); | |
554 | } | |
555 | ||
1ec14ad3 | 556 | static void |
c8c99b0f | 557 | update_mboxes(struct intel_ring_buffer *ring, |
9d773091 | 558 | u32 mmio_offset) |
1ec14ad3 | 559 | { |
1c8b46fc | 560 | intel_ring_emit(ring, MI_LOAD_REGISTER_IMM(1)); |
c8c99b0f | 561 | intel_ring_emit(ring, mmio_offset); |
9d773091 | 562 | intel_ring_emit(ring, ring->outstanding_lazy_request); |
1ec14ad3 CW |
563 | } |
564 | ||
c8c99b0f BW |
565 | /** |
566 | * gen6_add_request - Update the semaphore mailbox registers | |
567 | * | |
568 | * @ring - ring that is adding a request | |
569 | * @seqno - return seqno stuck into the ring | |
570 | * | |
571 | * Update the mailbox registers in the *other* rings with the current seqno. | |
572 | * This acts like a signal in the canonical semaphore. | |
573 | */ | |
1ec14ad3 | 574 | static int |
9d773091 | 575 | gen6_add_request(struct intel_ring_buffer *ring) |
1ec14ad3 | 576 | { |
c8c99b0f BW |
577 | u32 mbox1_reg; |
578 | u32 mbox2_reg; | |
1ec14ad3 CW |
579 | int ret; |
580 | ||
581 | ret = intel_ring_begin(ring, 10); | |
582 | if (ret) | |
583 | return ret; | |
584 | ||
c8c99b0f BW |
585 | mbox1_reg = ring->signal_mbox[0]; |
586 | mbox2_reg = ring->signal_mbox[1]; | |
1ec14ad3 | 587 | |
9d773091 CW |
588 | update_mboxes(ring, mbox1_reg); |
589 | update_mboxes(ring, mbox2_reg); | |
1ec14ad3 CW |
590 | intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
591 | intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
9d773091 | 592 | intel_ring_emit(ring, ring->outstanding_lazy_request); |
1ec14ad3 CW |
593 | intel_ring_emit(ring, MI_USER_INTERRUPT); |
594 | intel_ring_advance(ring); | |
595 | ||
1ec14ad3 CW |
596 | return 0; |
597 | } | |
598 | ||
f72b3435 MK |
599 | static inline bool i915_gem_has_seqno_wrapped(struct drm_device *dev, |
600 | u32 seqno) | |
601 | { | |
602 | struct drm_i915_private *dev_priv = dev->dev_private; | |
603 | return dev_priv->last_seqno < seqno; | |
604 | } | |
605 | ||
c8c99b0f BW |
606 | /** |
607 | * intel_ring_sync - sync the waiter to the signaller on seqno | |
608 | * | |
609 | * @waiter - ring that is waiting | |
610 | * @signaller - ring which has, or will signal | |
611 | * @seqno - seqno which the waiter will block on | |
612 | */ | |
613 | static int | |
686cb5f9 DV |
614 | gen6_ring_sync(struct intel_ring_buffer *waiter, |
615 | struct intel_ring_buffer *signaller, | |
616 | u32 seqno) | |
1ec14ad3 CW |
617 | { |
618 | int ret; | |
c8c99b0f BW |
619 | u32 dw1 = MI_SEMAPHORE_MBOX | |
620 | MI_SEMAPHORE_COMPARE | | |
621 | MI_SEMAPHORE_REGISTER; | |
1ec14ad3 | 622 | |
1500f7ea BW |
623 | /* Throughout all of the GEM code, seqno passed implies our current |
624 | * seqno is >= the last seqno executed. However for hardware the | |
625 | * comparison is strictly greater than. | |
626 | */ | |
627 | seqno -= 1; | |
628 | ||
686cb5f9 DV |
629 | WARN_ON(signaller->semaphore_register[waiter->id] == |
630 | MI_SEMAPHORE_SYNC_INVALID); | |
631 | ||
c8c99b0f | 632 | ret = intel_ring_begin(waiter, 4); |
1ec14ad3 CW |
633 | if (ret) |
634 | return ret; | |
635 | ||
f72b3435 MK |
636 | /* If seqno wrap happened, omit the wait with no-ops */ |
637 | if (likely(!i915_gem_has_seqno_wrapped(waiter->dev, seqno))) { | |
638 | intel_ring_emit(waiter, | |
639 | dw1 | | |
640 | signaller->semaphore_register[waiter->id]); | |
641 | intel_ring_emit(waiter, seqno); | |
642 | intel_ring_emit(waiter, 0); | |
643 | intel_ring_emit(waiter, MI_NOOP); | |
644 | } else { | |
645 | intel_ring_emit(waiter, MI_NOOP); | |
646 | intel_ring_emit(waiter, MI_NOOP); | |
647 | intel_ring_emit(waiter, MI_NOOP); | |
648 | intel_ring_emit(waiter, MI_NOOP); | |
649 | } | |
c8c99b0f | 650 | intel_ring_advance(waiter); |
1ec14ad3 CW |
651 | |
652 | return 0; | |
653 | } | |
654 | ||
c6df541c CW |
655 | #define PIPE_CONTROL_FLUSH(ring__, addr__) \ |
656 | do { \ | |
fcbc34e4 KG |
657 | intel_ring_emit(ring__, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | \ |
658 | PIPE_CONTROL_DEPTH_STALL); \ | |
c6df541c CW |
659 | intel_ring_emit(ring__, (addr__) | PIPE_CONTROL_GLOBAL_GTT); \ |
660 | intel_ring_emit(ring__, 0); \ | |
661 | intel_ring_emit(ring__, 0); \ | |
662 | } while (0) | |
663 | ||
664 | static int | |
9d773091 | 665 | pc_render_add_request(struct intel_ring_buffer *ring) |
c6df541c | 666 | { |
c6df541c CW |
667 | struct pipe_control *pc = ring->private; |
668 | u32 scratch_addr = pc->gtt_offset + 128; | |
669 | int ret; | |
670 | ||
671 | /* For Ironlake, MI_USER_INTERRUPT was deprecated and apparently | |
672 | * incoherent with writes to memory, i.e. completely fubar, | |
673 | * so we need to use PIPE_NOTIFY instead. | |
674 | * | |
675 | * However, we also need to workaround the qword write | |
676 | * incoherence by flushing the 6 PIPE_NOTIFY buffers out to | |
677 | * memory before requesting an interrupt. | |
678 | */ | |
679 | ret = intel_ring_begin(ring, 32); | |
680 | if (ret) | |
681 | return ret; | |
682 | ||
fcbc34e4 | 683 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | |
9d971b37 KG |
684 | PIPE_CONTROL_WRITE_FLUSH | |
685 | PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE); | |
c6df541c | 686 | intel_ring_emit(ring, pc->gtt_offset | PIPE_CONTROL_GLOBAL_GTT); |
9d773091 | 687 | intel_ring_emit(ring, ring->outstanding_lazy_request); |
c6df541c CW |
688 | intel_ring_emit(ring, 0); |
689 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
690 | scratch_addr += 128; /* write to separate cachelines */ | |
691 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
692 | scratch_addr += 128; | |
693 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
694 | scratch_addr += 128; | |
695 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
696 | scratch_addr += 128; | |
697 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
698 | scratch_addr += 128; | |
699 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
a71d8d94 | 700 | |
fcbc34e4 | 701 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | |
9d971b37 KG |
702 | PIPE_CONTROL_WRITE_FLUSH | |
703 | PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE | | |
c6df541c CW |
704 | PIPE_CONTROL_NOTIFY); |
705 | intel_ring_emit(ring, pc->gtt_offset | PIPE_CONTROL_GLOBAL_GTT); | |
9d773091 | 706 | intel_ring_emit(ring, ring->outstanding_lazy_request); |
c6df541c CW |
707 | intel_ring_emit(ring, 0); |
708 | intel_ring_advance(ring); | |
709 | ||
c6df541c CW |
710 | return 0; |
711 | } | |
712 | ||
4cd53c0c | 713 | static u32 |
b2eadbc8 | 714 | gen6_ring_get_seqno(struct intel_ring_buffer *ring, bool lazy_coherency) |
4cd53c0c | 715 | { |
4cd53c0c DV |
716 | /* Workaround to force correct ordering between irq and seqno writes on |
717 | * ivb (and maybe also on snb) by reading from a CS register (like | |
718 | * ACTHD) before reading the status page. */ | |
b2eadbc8 | 719 | if (!lazy_coherency) |
4cd53c0c DV |
720 | intel_ring_get_active_head(ring); |
721 | return intel_read_status_page(ring, I915_GEM_HWS_INDEX); | |
722 | } | |
723 | ||
8187a2b7 | 724 | static u32 |
b2eadbc8 | 725 | ring_get_seqno(struct intel_ring_buffer *ring, bool lazy_coherency) |
8187a2b7 | 726 | { |
1ec14ad3 CW |
727 | return intel_read_status_page(ring, I915_GEM_HWS_INDEX); |
728 | } | |
729 | ||
c6df541c | 730 | static u32 |
b2eadbc8 | 731 | pc_render_get_seqno(struct intel_ring_buffer *ring, bool lazy_coherency) |
c6df541c CW |
732 | { |
733 | struct pipe_control *pc = ring->private; | |
734 | return pc->cpu_page[0]; | |
735 | } | |
736 | ||
e48d8634 DV |
737 | static bool |
738 | gen5_ring_get_irq(struct intel_ring_buffer *ring) | |
739 | { | |
740 | struct drm_device *dev = ring->dev; | |
741 | drm_i915_private_t *dev_priv = dev->dev_private; | |
7338aefa | 742 | unsigned long flags; |
e48d8634 DV |
743 | |
744 | if (!dev->irq_enabled) | |
745 | return false; | |
746 | ||
7338aefa | 747 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
f637fde4 DV |
748 | if (ring->irq_refcount++ == 0) { |
749 | dev_priv->gt_irq_mask &= ~ring->irq_enable_mask; | |
750 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
751 | POSTING_READ(GTIMR); | |
752 | } | |
7338aefa | 753 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
e48d8634 DV |
754 | |
755 | return true; | |
756 | } | |
757 | ||
758 | static void | |
759 | gen5_ring_put_irq(struct intel_ring_buffer *ring) | |
760 | { | |
761 | struct drm_device *dev = ring->dev; | |
762 | drm_i915_private_t *dev_priv = dev->dev_private; | |
7338aefa | 763 | unsigned long flags; |
e48d8634 | 764 | |
7338aefa | 765 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
f637fde4 DV |
766 | if (--ring->irq_refcount == 0) { |
767 | dev_priv->gt_irq_mask |= ring->irq_enable_mask; | |
768 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
769 | POSTING_READ(GTIMR); | |
770 | } | |
7338aefa | 771 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
e48d8634 DV |
772 | } |
773 | ||
b13c2b96 | 774 | static bool |
e3670319 | 775 | i9xx_ring_get_irq(struct intel_ring_buffer *ring) |
62fdfeaf | 776 | { |
78501eac | 777 | struct drm_device *dev = ring->dev; |
01a03331 | 778 | drm_i915_private_t *dev_priv = dev->dev_private; |
7338aefa | 779 | unsigned long flags; |
62fdfeaf | 780 | |
b13c2b96 CW |
781 | if (!dev->irq_enabled) |
782 | return false; | |
783 | ||
7338aefa | 784 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
f637fde4 DV |
785 | if (ring->irq_refcount++ == 0) { |
786 | dev_priv->irq_mask &= ~ring->irq_enable_mask; | |
787 | I915_WRITE(IMR, dev_priv->irq_mask); | |
788 | POSTING_READ(IMR); | |
789 | } | |
7338aefa | 790 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
b13c2b96 CW |
791 | |
792 | return true; | |
62fdfeaf EA |
793 | } |
794 | ||
8187a2b7 | 795 | static void |
e3670319 | 796 | i9xx_ring_put_irq(struct intel_ring_buffer *ring) |
62fdfeaf | 797 | { |
78501eac | 798 | struct drm_device *dev = ring->dev; |
01a03331 | 799 | drm_i915_private_t *dev_priv = dev->dev_private; |
7338aefa | 800 | unsigned long flags; |
62fdfeaf | 801 | |
7338aefa | 802 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
f637fde4 DV |
803 | if (--ring->irq_refcount == 0) { |
804 | dev_priv->irq_mask |= ring->irq_enable_mask; | |
805 | I915_WRITE(IMR, dev_priv->irq_mask); | |
806 | POSTING_READ(IMR); | |
807 | } | |
7338aefa | 808 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
62fdfeaf EA |
809 | } |
810 | ||
c2798b19 CW |
811 | static bool |
812 | i8xx_ring_get_irq(struct intel_ring_buffer *ring) | |
813 | { | |
814 | struct drm_device *dev = ring->dev; | |
815 | drm_i915_private_t *dev_priv = dev->dev_private; | |
7338aefa | 816 | unsigned long flags; |
c2798b19 CW |
817 | |
818 | if (!dev->irq_enabled) | |
819 | return false; | |
820 | ||
7338aefa | 821 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
c2798b19 CW |
822 | if (ring->irq_refcount++ == 0) { |
823 | dev_priv->irq_mask &= ~ring->irq_enable_mask; | |
824 | I915_WRITE16(IMR, dev_priv->irq_mask); | |
825 | POSTING_READ16(IMR); | |
826 | } | |
7338aefa | 827 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
c2798b19 CW |
828 | |
829 | return true; | |
830 | } | |
831 | ||
832 | static void | |
833 | i8xx_ring_put_irq(struct intel_ring_buffer *ring) | |
834 | { | |
835 | struct drm_device *dev = ring->dev; | |
836 | drm_i915_private_t *dev_priv = dev->dev_private; | |
7338aefa | 837 | unsigned long flags; |
c2798b19 | 838 | |
7338aefa | 839 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
c2798b19 CW |
840 | if (--ring->irq_refcount == 0) { |
841 | dev_priv->irq_mask |= ring->irq_enable_mask; | |
842 | I915_WRITE16(IMR, dev_priv->irq_mask); | |
843 | POSTING_READ16(IMR); | |
844 | } | |
7338aefa | 845 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
c2798b19 CW |
846 | } |
847 | ||
78501eac | 848 | void intel_ring_setup_status_page(struct intel_ring_buffer *ring) |
8187a2b7 | 849 | { |
4593010b | 850 | struct drm_device *dev = ring->dev; |
78501eac | 851 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
4593010b EA |
852 | u32 mmio = 0; |
853 | ||
854 | /* The ring status page addresses are no longer next to the rest of | |
855 | * the ring registers as of gen7. | |
856 | */ | |
857 | if (IS_GEN7(dev)) { | |
858 | switch (ring->id) { | |
96154f2f | 859 | case RCS: |
4593010b EA |
860 | mmio = RENDER_HWS_PGA_GEN7; |
861 | break; | |
96154f2f | 862 | case BCS: |
4593010b EA |
863 | mmio = BLT_HWS_PGA_GEN7; |
864 | break; | |
96154f2f | 865 | case VCS: |
4593010b EA |
866 | mmio = BSD_HWS_PGA_GEN7; |
867 | break; | |
868 | } | |
869 | } else if (IS_GEN6(ring->dev)) { | |
870 | mmio = RING_HWS_PGA_GEN6(ring->mmio_base); | |
871 | } else { | |
872 | mmio = RING_HWS_PGA(ring->mmio_base); | |
873 | } | |
874 | ||
78501eac CW |
875 | I915_WRITE(mmio, (u32)ring->status_page.gfx_addr); |
876 | POSTING_READ(mmio); | |
8187a2b7 ZN |
877 | } |
878 | ||
b72f3acb | 879 | static int |
78501eac CW |
880 | bsd_ring_flush(struct intel_ring_buffer *ring, |
881 | u32 invalidate_domains, | |
882 | u32 flush_domains) | |
d1b851fc | 883 | { |
b72f3acb CW |
884 | int ret; |
885 | ||
b72f3acb CW |
886 | ret = intel_ring_begin(ring, 2); |
887 | if (ret) | |
888 | return ret; | |
889 | ||
890 | intel_ring_emit(ring, MI_FLUSH); | |
891 | intel_ring_emit(ring, MI_NOOP); | |
892 | intel_ring_advance(ring); | |
893 | return 0; | |
d1b851fc ZN |
894 | } |
895 | ||
3cce469c | 896 | static int |
9d773091 | 897 | i9xx_add_request(struct intel_ring_buffer *ring) |
d1b851fc | 898 | { |
3cce469c CW |
899 | int ret; |
900 | ||
901 | ret = intel_ring_begin(ring, 4); | |
902 | if (ret) | |
903 | return ret; | |
6f392d54 | 904 | |
3cce469c CW |
905 | intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
906 | intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
9d773091 | 907 | intel_ring_emit(ring, ring->outstanding_lazy_request); |
3cce469c CW |
908 | intel_ring_emit(ring, MI_USER_INTERRUPT); |
909 | intel_ring_advance(ring); | |
d1b851fc | 910 | |
3cce469c | 911 | return 0; |
d1b851fc ZN |
912 | } |
913 | ||
0f46832f | 914 | static bool |
25c06300 | 915 | gen6_ring_get_irq(struct intel_ring_buffer *ring) |
0f46832f CW |
916 | { |
917 | struct drm_device *dev = ring->dev; | |
01a03331 | 918 | drm_i915_private_t *dev_priv = dev->dev_private; |
7338aefa | 919 | unsigned long flags; |
0f46832f CW |
920 | |
921 | if (!dev->irq_enabled) | |
922 | return false; | |
923 | ||
4cd53c0c DV |
924 | /* It looks like we need to prevent the gt from suspending while waiting |
925 | * for an notifiy irq, otherwise irqs seem to get lost on at least the | |
926 | * blt/bsd rings on ivb. */ | |
99ffa162 | 927 | gen6_gt_force_wake_get(dev_priv); |
4cd53c0c | 928 | |
7338aefa | 929 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
01a03331 | 930 | if (ring->irq_refcount++ == 0) { |
e1ef7cc2 | 931 | if (HAS_L3_GPU_CACHE(dev) && ring->id == RCS) |
15b9f80e BW |
932 | I915_WRITE_IMR(ring, ~(ring->irq_enable_mask | |
933 | GEN6_RENDER_L3_PARITY_ERROR)); | |
934 | else | |
935 | I915_WRITE_IMR(ring, ~ring->irq_enable_mask); | |
f637fde4 DV |
936 | dev_priv->gt_irq_mask &= ~ring->irq_enable_mask; |
937 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
938 | POSTING_READ(GTIMR); | |
0f46832f | 939 | } |
7338aefa | 940 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
0f46832f CW |
941 | |
942 | return true; | |
943 | } | |
944 | ||
945 | static void | |
25c06300 | 946 | gen6_ring_put_irq(struct intel_ring_buffer *ring) |
0f46832f CW |
947 | { |
948 | struct drm_device *dev = ring->dev; | |
01a03331 | 949 | drm_i915_private_t *dev_priv = dev->dev_private; |
7338aefa | 950 | unsigned long flags; |
0f46832f | 951 | |
7338aefa | 952 | spin_lock_irqsave(&dev_priv->irq_lock, flags); |
01a03331 | 953 | if (--ring->irq_refcount == 0) { |
e1ef7cc2 | 954 | if (HAS_L3_GPU_CACHE(dev) && ring->id == RCS) |
15b9f80e BW |
955 | I915_WRITE_IMR(ring, ~GEN6_RENDER_L3_PARITY_ERROR); |
956 | else | |
957 | I915_WRITE_IMR(ring, ~0); | |
f637fde4 DV |
958 | dev_priv->gt_irq_mask |= ring->irq_enable_mask; |
959 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
960 | POSTING_READ(GTIMR); | |
1ec14ad3 | 961 | } |
7338aefa | 962 | spin_unlock_irqrestore(&dev_priv->irq_lock, flags); |
4cd53c0c | 963 | |
99ffa162 | 964 | gen6_gt_force_wake_put(dev_priv); |
d1b851fc ZN |
965 | } |
966 | ||
d1b851fc | 967 | static int |
d7d4eedd CW |
968 | i965_dispatch_execbuffer(struct intel_ring_buffer *ring, |
969 | u32 offset, u32 length, | |
970 | unsigned flags) | |
d1b851fc | 971 | { |
e1f99ce6 | 972 | int ret; |
78501eac | 973 | |
e1f99ce6 CW |
974 | ret = intel_ring_begin(ring, 2); |
975 | if (ret) | |
976 | return ret; | |
977 | ||
78501eac | 978 | intel_ring_emit(ring, |
65f56876 CW |
979 | MI_BATCH_BUFFER_START | |
980 | MI_BATCH_GTT | | |
d7d4eedd | 981 | (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE_I965)); |
c4e7a414 | 982 | intel_ring_emit(ring, offset); |
78501eac CW |
983 | intel_ring_advance(ring); |
984 | ||
d1b851fc ZN |
985 | return 0; |
986 | } | |
987 | ||
8187a2b7 | 988 | static int |
fb3256da | 989 | i830_dispatch_execbuffer(struct intel_ring_buffer *ring, |
d7d4eedd CW |
990 | u32 offset, u32 len, |
991 | unsigned flags) | |
62fdfeaf | 992 | { |
c4e7a414 | 993 | int ret; |
62fdfeaf | 994 | |
fb3256da DV |
995 | ret = intel_ring_begin(ring, 4); |
996 | if (ret) | |
997 | return ret; | |
62fdfeaf | 998 | |
fb3256da | 999 | intel_ring_emit(ring, MI_BATCH_BUFFER); |
d7d4eedd | 1000 | intel_ring_emit(ring, offset | (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE)); |
fb3256da DV |
1001 | intel_ring_emit(ring, offset + len - 8); |
1002 | intel_ring_emit(ring, 0); | |
1003 | intel_ring_advance(ring); | |
e1f99ce6 | 1004 | |
fb3256da DV |
1005 | return 0; |
1006 | } | |
1007 | ||
1008 | static int | |
1009 | i915_dispatch_execbuffer(struct intel_ring_buffer *ring, | |
d7d4eedd CW |
1010 | u32 offset, u32 len, |
1011 | unsigned flags) | |
fb3256da DV |
1012 | { |
1013 | int ret; | |
1014 | ||
1015 | ret = intel_ring_begin(ring, 2); | |
1016 | if (ret) | |
1017 | return ret; | |
1018 | ||
65f56876 | 1019 | intel_ring_emit(ring, MI_BATCH_BUFFER_START | MI_BATCH_GTT); |
d7d4eedd | 1020 | intel_ring_emit(ring, offset | (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE)); |
c4e7a414 | 1021 | intel_ring_advance(ring); |
62fdfeaf | 1022 | |
62fdfeaf EA |
1023 | return 0; |
1024 | } | |
1025 | ||
78501eac | 1026 | static void cleanup_status_page(struct intel_ring_buffer *ring) |
62fdfeaf | 1027 | { |
05394f39 | 1028 | struct drm_i915_gem_object *obj; |
62fdfeaf | 1029 | |
8187a2b7 ZN |
1030 | obj = ring->status_page.obj; |
1031 | if (obj == NULL) | |
62fdfeaf | 1032 | return; |
62fdfeaf | 1033 | |
9da3da66 | 1034 | kunmap(sg_page(obj->pages->sgl)); |
62fdfeaf | 1035 | i915_gem_object_unpin(obj); |
05394f39 | 1036 | drm_gem_object_unreference(&obj->base); |
8187a2b7 | 1037 | ring->status_page.obj = NULL; |
62fdfeaf EA |
1038 | } |
1039 | ||
78501eac | 1040 | static int init_status_page(struct intel_ring_buffer *ring) |
62fdfeaf | 1041 | { |
78501eac | 1042 | struct drm_device *dev = ring->dev; |
05394f39 | 1043 | struct drm_i915_gem_object *obj; |
62fdfeaf EA |
1044 | int ret; |
1045 | ||
62fdfeaf EA |
1046 | obj = i915_gem_alloc_object(dev, 4096); |
1047 | if (obj == NULL) { | |
1048 | DRM_ERROR("Failed to allocate status page\n"); | |
1049 | ret = -ENOMEM; | |
1050 | goto err; | |
1051 | } | |
e4ffd173 CW |
1052 | |
1053 | i915_gem_object_set_cache_level(obj, I915_CACHE_LLC); | |
62fdfeaf | 1054 | |
86a1ee26 | 1055 | ret = i915_gem_object_pin(obj, 4096, true, false); |
62fdfeaf | 1056 | if (ret != 0) { |
62fdfeaf EA |
1057 | goto err_unref; |
1058 | } | |
1059 | ||
05394f39 | 1060 | ring->status_page.gfx_addr = obj->gtt_offset; |
9da3da66 | 1061 | ring->status_page.page_addr = kmap(sg_page(obj->pages->sgl)); |
8187a2b7 | 1062 | if (ring->status_page.page_addr == NULL) { |
2e6c21ed | 1063 | ret = -ENOMEM; |
62fdfeaf EA |
1064 | goto err_unpin; |
1065 | } | |
8187a2b7 ZN |
1066 | ring->status_page.obj = obj; |
1067 | memset(ring->status_page.page_addr, 0, PAGE_SIZE); | |
62fdfeaf | 1068 | |
78501eac | 1069 | intel_ring_setup_status_page(ring); |
8187a2b7 ZN |
1070 | DRM_DEBUG_DRIVER("%s hws offset: 0x%08x\n", |
1071 | ring->name, ring->status_page.gfx_addr); | |
62fdfeaf EA |
1072 | |
1073 | return 0; | |
1074 | ||
1075 | err_unpin: | |
1076 | i915_gem_object_unpin(obj); | |
1077 | err_unref: | |
05394f39 | 1078 | drm_gem_object_unreference(&obj->base); |
62fdfeaf | 1079 | err: |
8187a2b7 | 1080 | return ret; |
62fdfeaf EA |
1081 | } |
1082 | ||
6b8294a4 CW |
1083 | static int init_phys_hws_pga(struct intel_ring_buffer *ring) |
1084 | { | |
1085 | struct drm_i915_private *dev_priv = ring->dev->dev_private; | |
1086 | u32 addr; | |
1087 | ||
1088 | if (!dev_priv->status_page_dmah) { | |
1089 | dev_priv->status_page_dmah = | |
1090 | drm_pci_alloc(ring->dev, PAGE_SIZE, PAGE_SIZE); | |
1091 | if (!dev_priv->status_page_dmah) | |
1092 | return -ENOMEM; | |
1093 | } | |
1094 | ||
1095 | addr = dev_priv->status_page_dmah->busaddr; | |
1096 | if (INTEL_INFO(ring->dev)->gen >= 4) | |
1097 | addr |= (dev_priv->status_page_dmah->busaddr >> 28) & 0xf0; | |
1098 | I915_WRITE(HWS_PGA, addr); | |
1099 | ||
1100 | ring->status_page.page_addr = dev_priv->status_page_dmah->vaddr; | |
1101 | memset(ring->status_page.page_addr, 0, PAGE_SIZE); | |
1102 | ||
1103 | return 0; | |
1104 | } | |
1105 | ||
c43b5634 BW |
1106 | static int intel_init_ring_buffer(struct drm_device *dev, |
1107 | struct intel_ring_buffer *ring) | |
62fdfeaf | 1108 | { |
05394f39 | 1109 | struct drm_i915_gem_object *obj; |
dd2757f8 | 1110 | struct drm_i915_private *dev_priv = dev->dev_private; |
dd785e35 CW |
1111 | int ret; |
1112 | ||
8187a2b7 | 1113 | ring->dev = dev; |
23bc5982 CW |
1114 | INIT_LIST_HEAD(&ring->active_list); |
1115 | INIT_LIST_HEAD(&ring->request_list); | |
dfc9ef2f | 1116 | ring->size = 32 * PAGE_SIZE; |
9d773091 | 1117 | memset(ring->sync_seqno, 0, sizeof(ring->sync_seqno)); |
0dc79fb2 | 1118 | |
b259f673 | 1119 | init_waitqueue_head(&ring->irq_queue); |
62fdfeaf | 1120 | |
8187a2b7 | 1121 | if (I915_NEED_GFX_HWS(dev)) { |
78501eac | 1122 | ret = init_status_page(ring); |
8187a2b7 ZN |
1123 | if (ret) |
1124 | return ret; | |
6b8294a4 CW |
1125 | } else { |
1126 | BUG_ON(ring->id != RCS); | |
1127 | ret = init_phys_hws_pga(ring); | |
1128 | if (ret) | |
1129 | return ret; | |
8187a2b7 | 1130 | } |
62fdfeaf | 1131 | |
ebc052e0 CW |
1132 | obj = NULL; |
1133 | if (!HAS_LLC(dev)) | |
1134 | obj = i915_gem_object_create_stolen(dev, ring->size); | |
1135 | if (obj == NULL) | |
1136 | obj = i915_gem_alloc_object(dev, ring->size); | |
62fdfeaf EA |
1137 | if (obj == NULL) { |
1138 | DRM_ERROR("Failed to allocate ringbuffer\n"); | |
8187a2b7 | 1139 | ret = -ENOMEM; |
dd785e35 | 1140 | goto err_hws; |
62fdfeaf | 1141 | } |
62fdfeaf | 1142 | |
05394f39 | 1143 | ring->obj = obj; |
8187a2b7 | 1144 | |
86a1ee26 | 1145 | ret = i915_gem_object_pin(obj, PAGE_SIZE, true, false); |
dd785e35 CW |
1146 | if (ret) |
1147 | goto err_unref; | |
62fdfeaf | 1148 | |
3eef8918 CW |
1149 | ret = i915_gem_object_set_to_gtt_domain(obj, true); |
1150 | if (ret) | |
1151 | goto err_unpin; | |
1152 | ||
dd2757f8 DV |
1153 | ring->virtual_start = |
1154 | ioremap_wc(dev_priv->mm.gtt->gma_bus_addr + obj->gtt_offset, | |
1155 | ring->size); | |
4225d0f2 | 1156 | if (ring->virtual_start == NULL) { |
62fdfeaf | 1157 | DRM_ERROR("Failed to map ringbuffer.\n"); |
8187a2b7 | 1158 | ret = -EINVAL; |
dd785e35 | 1159 | goto err_unpin; |
62fdfeaf EA |
1160 | } |
1161 | ||
78501eac | 1162 | ret = ring->init(ring); |
dd785e35 CW |
1163 | if (ret) |
1164 | goto err_unmap; | |
62fdfeaf | 1165 | |
55249baa CW |
1166 | /* Workaround an erratum on the i830 which causes a hang if |
1167 | * the TAIL pointer points to within the last 2 cachelines | |
1168 | * of the buffer. | |
1169 | */ | |
1170 | ring->effective_size = ring->size; | |
27c1cbd0 | 1171 | if (IS_I830(ring->dev) || IS_845G(ring->dev)) |
55249baa CW |
1172 | ring->effective_size -= 128; |
1173 | ||
c584fe47 | 1174 | return 0; |
dd785e35 CW |
1175 | |
1176 | err_unmap: | |
4225d0f2 | 1177 | iounmap(ring->virtual_start); |
dd785e35 CW |
1178 | err_unpin: |
1179 | i915_gem_object_unpin(obj); | |
1180 | err_unref: | |
05394f39 CW |
1181 | drm_gem_object_unreference(&obj->base); |
1182 | ring->obj = NULL; | |
dd785e35 | 1183 | err_hws: |
78501eac | 1184 | cleanup_status_page(ring); |
8187a2b7 | 1185 | return ret; |
62fdfeaf EA |
1186 | } |
1187 | ||
78501eac | 1188 | void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring) |
62fdfeaf | 1189 | { |
33626e6a CW |
1190 | struct drm_i915_private *dev_priv; |
1191 | int ret; | |
1192 | ||
05394f39 | 1193 | if (ring->obj == NULL) |
62fdfeaf EA |
1194 | return; |
1195 | ||
33626e6a CW |
1196 | /* Disable the ring buffer. The ring must be idle at this point */ |
1197 | dev_priv = ring->dev->dev_private; | |
3e960501 | 1198 | ret = intel_ring_idle(ring); |
29ee3991 CW |
1199 | if (ret) |
1200 | DRM_ERROR("failed to quiesce %s whilst cleaning up: %d\n", | |
1201 | ring->name, ret); | |
1202 | ||
33626e6a CW |
1203 | I915_WRITE_CTL(ring, 0); |
1204 | ||
4225d0f2 | 1205 | iounmap(ring->virtual_start); |
62fdfeaf | 1206 | |
05394f39 CW |
1207 | i915_gem_object_unpin(ring->obj); |
1208 | drm_gem_object_unreference(&ring->obj->base); | |
1209 | ring->obj = NULL; | |
78501eac | 1210 | |
8d19215b ZN |
1211 | if (ring->cleanup) |
1212 | ring->cleanup(ring); | |
1213 | ||
78501eac | 1214 | cleanup_status_page(ring); |
62fdfeaf EA |
1215 | } |
1216 | ||
a71d8d94 CW |
1217 | static int intel_ring_wait_seqno(struct intel_ring_buffer *ring, u32 seqno) |
1218 | { | |
a71d8d94 CW |
1219 | int ret; |
1220 | ||
199b2bc2 | 1221 | ret = i915_wait_seqno(ring, seqno); |
b2da9fe5 BW |
1222 | if (!ret) |
1223 | i915_gem_retire_requests_ring(ring); | |
a71d8d94 CW |
1224 | |
1225 | return ret; | |
1226 | } | |
1227 | ||
1228 | static int intel_ring_wait_request(struct intel_ring_buffer *ring, int n) | |
1229 | { | |
1230 | struct drm_i915_gem_request *request; | |
1231 | u32 seqno = 0; | |
1232 | int ret; | |
1233 | ||
1234 | i915_gem_retire_requests_ring(ring); | |
1235 | ||
1236 | if (ring->last_retired_head != -1) { | |
1237 | ring->head = ring->last_retired_head; | |
1238 | ring->last_retired_head = -1; | |
1239 | ring->space = ring_space(ring); | |
1240 | if (ring->space >= n) | |
1241 | return 0; | |
1242 | } | |
1243 | ||
1244 | list_for_each_entry(request, &ring->request_list, list) { | |
1245 | int space; | |
1246 | ||
1247 | if (request->tail == -1) | |
1248 | continue; | |
1249 | ||
1250 | space = request->tail - (ring->tail + 8); | |
1251 | if (space < 0) | |
1252 | space += ring->size; | |
1253 | if (space >= n) { | |
1254 | seqno = request->seqno; | |
1255 | break; | |
1256 | } | |
1257 | ||
1258 | /* Consume this request in case we need more space than | |
1259 | * is available and so need to prevent a race between | |
1260 | * updating last_retired_head and direct reads of | |
1261 | * I915_RING_HEAD. It also provides a nice sanity check. | |
1262 | */ | |
1263 | request->tail = -1; | |
1264 | } | |
1265 | ||
1266 | if (seqno == 0) | |
1267 | return -ENOSPC; | |
1268 | ||
1269 | ret = intel_ring_wait_seqno(ring, seqno); | |
1270 | if (ret) | |
1271 | return ret; | |
1272 | ||
1273 | if (WARN_ON(ring->last_retired_head == -1)) | |
1274 | return -ENOSPC; | |
1275 | ||
1276 | ring->head = ring->last_retired_head; | |
1277 | ring->last_retired_head = -1; | |
1278 | ring->space = ring_space(ring); | |
1279 | if (WARN_ON(ring->space < n)) | |
1280 | return -ENOSPC; | |
1281 | ||
1282 | return 0; | |
1283 | } | |
1284 | ||
3e960501 | 1285 | static int ring_wait_for_space(struct intel_ring_buffer *ring, int n) |
62fdfeaf | 1286 | { |
78501eac | 1287 | struct drm_device *dev = ring->dev; |
cae5852d | 1288 | struct drm_i915_private *dev_priv = dev->dev_private; |
78501eac | 1289 | unsigned long end; |
a71d8d94 | 1290 | int ret; |
c7dca47b | 1291 | |
a71d8d94 CW |
1292 | ret = intel_ring_wait_request(ring, n); |
1293 | if (ret != -ENOSPC) | |
1294 | return ret; | |
1295 | ||
db53a302 | 1296 | trace_i915_ring_wait_begin(ring); |
63ed2cb2 DV |
1297 | /* With GEM the hangcheck timer should kick us out of the loop, |
1298 | * leaving it early runs the risk of corrupting GEM state (due | |
1299 | * to running on almost untested codepaths). But on resume | |
1300 | * timers don't work yet, so prevent a complete hang in that | |
1301 | * case by choosing an insanely large timeout. */ | |
1302 | end = jiffies + 60 * HZ; | |
e6bfaf85 | 1303 | |
8187a2b7 | 1304 | do { |
c7dca47b CW |
1305 | ring->head = I915_READ_HEAD(ring); |
1306 | ring->space = ring_space(ring); | |
62fdfeaf | 1307 | if (ring->space >= n) { |
db53a302 | 1308 | trace_i915_ring_wait_end(ring); |
62fdfeaf EA |
1309 | return 0; |
1310 | } | |
1311 | ||
1312 | if (dev->primary->master) { | |
1313 | struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; | |
1314 | if (master_priv->sarea_priv) | |
1315 | master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; | |
1316 | } | |
d1b851fc | 1317 | |
e60a0b10 | 1318 | msleep(1); |
d6b2c790 DV |
1319 | |
1320 | ret = i915_gem_check_wedge(dev_priv, dev_priv->mm.interruptible); | |
1321 | if (ret) | |
1322 | return ret; | |
8187a2b7 | 1323 | } while (!time_after(jiffies, end)); |
db53a302 | 1324 | trace_i915_ring_wait_end(ring); |
8187a2b7 ZN |
1325 | return -EBUSY; |
1326 | } | |
62fdfeaf | 1327 | |
3e960501 CW |
1328 | static int intel_wrap_ring_buffer(struct intel_ring_buffer *ring) |
1329 | { | |
1330 | uint32_t __iomem *virt; | |
1331 | int rem = ring->size - ring->tail; | |
1332 | ||
1333 | if (ring->space < rem) { | |
1334 | int ret = ring_wait_for_space(ring, rem); | |
1335 | if (ret) | |
1336 | return ret; | |
1337 | } | |
1338 | ||
1339 | virt = ring->virtual_start + ring->tail; | |
1340 | rem /= 4; | |
1341 | while (rem--) | |
1342 | iowrite32(MI_NOOP, virt++); | |
1343 | ||
1344 | ring->tail = 0; | |
1345 | ring->space = ring_space(ring); | |
1346 | ||
1347 | return 0; | |
1348 | } | |
1349 | ||
1350 | int intel_ring_idle(struct intel_ring_buffer *ring) | |
1351 | { | |
1352 | u32 seqno; | |
1353 | int ret; | |
1354 | ||
1355 | /* We need to add any requests required to flush the objects and ring */ | |
1356 | if (ring->outstanding_lazy_request) { | |
1357 | ret = i915_add_request(ring, NULL, NULL); | |
1358 | if (ret) | |
1359 | return ret; | |
1360 | } | |
1361 | ||
1362 | /* Wait upon the last request to be completed */ | |
1363 | if (list_empty(&ring->request_list)) | |
1364 | return 0; | |
1365 | ||
1366 | seqno = list_entry(ring->request_list.prev, | |
1367 | struct drm_i915_gem_request, | |
1368 | list)->seqno; | |
1369 | ||
1370 | return i915_wait_seqno(ring, seqno); | |
1371 | } | |
1372 | ||
9d773091 CW |
1373 | static int |
1374 | intel_ring_alloc_seqno(struct intel_ring_buffer *ring) | |
1375 | { | |
1376 | if (ring->outstanding_lazy_request) | |
1377 | return 0; | |
1378 | ||
1379 | return i915_gem_get_seqno(ring->dev, &ring->outstanding_lazy_request); | |
1380 | } | |
1381 | ||
cbcc80df MK |
1382 | static int __intel_ring_begin(struct intel_ring_buffer *ring, |
1383 | int bytes) | |
1384 | { | |
1385 | int ret; | |
1386 | ||
1387 | if (unlikely(ring->tail + bytes > ring->effective_size)) { | |
1388 | ret = intel_wrap_ring_buffer(ring); | |
1389 | if (unlikely(ret)) | |
1390 | return ret; | |
1391 | } | |
1392 | ||
1393 | if (unlikely(ring->space < bytes)) { | |
1394 | ret = ring_wait_for_space(ring, bytes); | |
1395 | if (unlikely(ret)) | |
1396 | return ret; | |
1397 | } | |
1398 | ||
1399 | ring->space -= bytes; | |
1400 | return 0; | |
1401 | } | |
1402 | ||
e1f99ce6 CW |
1403 | int intel_ring_begin(struct intel_ring_buffer *ring, |
1404 | int num_dwords) | |
8187a2b7 | 1405 | { |
de2b9985 | 1406 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
e1f99ce6 | 1407 | int ret; |
78501eac | 1408 | |
de2b9985 DV |
1409 | ret = i915_gem_check_wedge(dev_priv, dev_priv->mm.interruptible); |
1410 | if (ret) | |
1411 | return ret; | |
21dd3734 | 1412 | |
9d773091 CW |
1413 | /* Preallocate the olr before touching the ring */ |
1414 | ret = intel_ring_alloc_seqno(ring); | |
1415 | if (ret) | |
1416 | return ret; | |
1417 | ||
cbcc80df | 1418 | return __intel_ring_begin(ring, num_dwords * sizeof(uint32_t)); |
8187a2b7 | 1419 | } |
62fdfeaf | 1420 | |
498d2ac1 MK |
1421 | int intel_ring_handle_seqno_wrap(struct intel_ring_buffer *ring) |
1422 | { | |
1423 | int ret; | |
1424 | ||
1425 | BUG_ON(ring->outstanding_lazy_request); | |
1426 | ||
1427 | if (INTEL_INFO(ring->dev)->gen < 6) | |
1428 | return 0; | |
1429 | ||
1430 | ret = __intel_ring_begin(ring, 6 * sizeof(uint32_t)); | |
1431 | if (ret) | |
1432 | return ret; | |
1433 | ||
1434 | /* Leaving a stale, pre-wrap seqno behind in the mboxes will result in | |
1435 | * post-wrap semaphore waits completing immediately. Clear them. */ | |
1436 | update_mboxes(ring, ring->signal_mbox[0]); | |
1437 | update_mboxes(ring, ring->signal_mbox[1]); | |
1438 | intel_ring_advance(ring); | |
1439 | ||
1440 | return 0; | |
1441 | } | |
1442 | ||
78501eac | 1443 | void intel_ring_advance(struct intel_ring_buffer *ring) |
8187a2b7 | 1444 | { |
e5eb3d63 DV |
1445 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
1446 | ||
d97ed339 | 1447 | ring->tail &= ring->size - 1; |
e5eb3d63 DV |
1448 | if (dev_priv->stop_rings & intel_ring_flag(ring)) |
1449 | return; | |
78501eac | 1450 | ring->write_tail(ring, ring->tail); |
8187a2b7 | 1451 | } |
62fdfeaf | 1452 | |
881f47b6 | 1453 | |
78501eac | 1454 | static void gen6_bsd_ring_write_tail(struct intel_ring_buffer *ring, |
297b0c5b | 1455 | u32 value) |
881f47b6 | 1456 | { |
0206e353 | 1457 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
881f47b6 XH |
1458 | |
1459 | /* Every tail move must follow the sequence below */ | |
12f55818 CW |
1460 | |
1461 | /* Disable notification that the ring is IDLE. The GT | |
1462 | * will then assume that it is busy and bring it out of rc6. | |
1463 | */ | |
0206e353 | 1464 | I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, |
12f55818 CW |
1465 | _MASKED_BIT_ENABLE(GEN6_BSD_SLEEP_MSG_DISABLE)); |
1466 | ||
1467 | /* Clear the context id. Here be magic! */ | |
1468 | I915_WRITE64(GEN6_BSD_RNCID, 0x0); | |
0206e353 | 1469 | |
12f55818 | 1470 | /* Wait for the ring not to be idle, i.e. for it to wake up. */ |
0206e353 | 1471 | if (wait_for((I915_READ(GEN6_BSD_SLEEP_PSMI_CONTROL) & |
12f55818 CW |
1472 | GEN6_BSD_SLEEP_INDICATOR) == 0, |
1473 | 50)) | |
1474 | DRM_ERROR("timed out waiting for the BSD ring to wake up\n"); | |
0206e353 | 1475 | |
12f55818 | 1476 | /* Now that the ring is fully powered up, update the tail */ |
0206e353 | 1477 | I915_WRITE_TAIL(ring, value); |
12f55818 CW |
1478 | POSTING_READ(RING_TAIL(ring->mmio_base)); |
1479 | ||
1480 | /* Let the ring send IDLE messages to the GT again, | |
1481 | * and so let it sleep to conserve power when idle. | |
1482 | */ | |
0206e353 | 1483 | I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, |
12f55818 | 1484 | _MASKED_BIT_DISABLE(GEN6_BSD_SLEEP_MSG_DISABLE)); |
881f47b6 XH |
1485 | } |
1486 | ||
b72f3acb | 1487 | static int gen6_ring_flush(struct intel_ring_buffer *ring, |
71a77e07 | 1488 | u32 invalidate, u32 flush) |
881f47b6 | 1489 | { |
71a77e07 | 1490 | uint32_t cmd; |
b72f3acb CW |
1491 | int ret; |
1492 | ||
b72f3acb CW |
1493 | ret = intel_ring_begin(ring, 4); |
1494 | if (ret) | |
1495 | return ret; | |
1496 | ||
71a77e07 | 1497 | cmd = MI_FLUSH_DW; |
9a289771 JB |
1498 | /* |
1499 | * Bspec vol 1c.5 - video engine command streamer: | |
1500 | * "If ENABLED, all TLBs will be invalidated once the flush | |
1501 | * operation is complete. This bit is only valid when the | |
1502 | * Post-Sync Operation field is a value of 1h or 3h." | |
1503 | */ | |
71a77e07 | 1504 | if (invalidate & I915_GEM_GPU_DOMAINS) |
9a289771 JB |
1505 | cmd |= MI_INVALIDATE_TLB | MI_INVALIDATE_BSD | |
1506 | MI_FLUSH_DW_STORE_INDEX | MI_FLUSH_DW_OP_STOREDW; | |
71a77e07 | 1507 | intel_ring_emit(ring, cmd); |
9a289771 | 1508 | intel_ring_emit(ring, I915_GEM_HWS_SCRATCH_ADDR | MI_FLUSH_DW_USE_GTT); |
b72f3acb | 1509 | intel_ring_emit(ring, 0); |
71a77e07 | 1510 | intel_ring_emit(ring, MI_NOOP); |
b72f3acb CW |
1511 | intel_ring_advance(ring); |
1512 | return 0; | |
881f47b6 XH |
1513 | } |
1514 | ||
d7d4eedd CW |
1515 | static int |
1516 | hsw_ring_dispatch_execbuffer(struct intel_ring_buffer *ring, | |
1517 | u32 offset, u32 len, | |
1518 | unsigned flags) | |
1519 | { | |
1520 | int ret; | |
1521 | ||
1522 | ret = intel_ring_begin(ring, 2); | |
1523 | if (ret) | |
1524 | return ret; | |
1525 | ||
1526 | intel_ring_emit(ring, | |
1527 | MI_BATCH_BUFFER_START | MI_BATCH_PPGTT_HSW | | |
1528 | (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE_HSW)); | |
1529 | /* bit0-7 is the length on GEN6+ */ | |
1530 | intel_ring_emit(ring, offset); | |
1531 | intel_ring_advance(ring); | |
1532 | ||
1533 | return 0; | |
1534 | } | |
1535 | ||
881f47b6 | 1536 | static int |
78501eac | 1537 | gen6_ring_dispatch_execbuffer(struct intel_ring_buffer *ring, |
d7d4eedd CW |
1538 | u32 offset, u32 len, |
1539 | unsigned flags) | |
881f47b6 | 1540 | { |
0206e353 | 1541 | int ret; |
ab6f8e32 | 1542 | |
0206e353 AJ |
1543 | ret = intel_ring_begin(ring, 2); |
1544 | if (ret) | |
1545 | return ret; | |
e1f99ce6 | 1546 | |
d7d4eedd CW |
1547 | intel_ring_emit(ring, |
1548 | MI_BATCH_BUFFER_START | | |
1549 | (flags & I915_DISPATCH_SECURE ? 0 : MI_BATCH_NON_SECURE_I965)); | |
0206e353 AJ |
1550 | /* bit0-7 is the length on GEN6+ */ |
1551 | intel_ring_emit(ring, offset); | |
1552 | intel_ring_advance(ring); | |
ab6f8e32 | 1553 | |
0206e353 | 1554 | return 0; |
881f47b6 XH |
1555 | } |
1556 | ||
549f7365 CW |
1557 | /* Blitter support (SandyBridge+) */ |
1558 | ||
b72f3acb | 1559 | static int blt_ring_flush(struct intel_ring_buffer *ring, |
71a77e07 | 1560 | u32 invalidate, u32 flush) |
8d19215b | 1561 | { |
71a77e07 | 1562 | uint32_t cmd; |
b72f3acb CW |
1563 | int ret; |
1564 | ||
6a233c78 | 1565 | ret = intel_ring_begin(ring, 4); |
b72f3acb CW |
1566 | if (ret) |
1567 | return ret; | |
1568 | ||
71a77e07 | 1569 | cmd = MI_FLUSH_DW; |
9a289771 JB |
1570 | /* |
1571 | * Bspec vol 1c.3 - blitter engine command streamer: | |
1572 | * "If ENABLED, all TLBs will be invalidated once the flush | |
1573 | * operation is complete. This bit is only valid when the | |
1574 | * Post-Sync Operation field is a value of 1h or 3h." | |
1575 | */ | |
71a77e07 | 1576 | if (invalidate & I915_GEM_DOMAIN_RENDER) |
9a289771 | 1577 | cmd |= MI_INVALIDATE_TLB | MI_FLUSH_DW_STORE_INDEX | |
b3fcabb1 | 1578 | MI_FLUSH_DW_OP_STOREDW; |
71a77e07 | 1579 | intel_ring_emit(ring, cmd); |
9a289771 | 1580 | intel_ring_emit(ring, I915_GEM_HWS_SCRATCH_ADDR | MI_FLUSH_DW_USE_GTT); |
b72f3acb | 1581 | intel_ring_emit(ring, 0); |
71a77e07 | 1582 | intel_ring_emit(ring, MI_NOOP); |
b72f3acb CW |
1583 | intel_ring_advance(ring); |
1584 | return 0; | |
8d19215b ZN |
1585 | } |
1586 | ||
5c1143bb XH |
1587 | int intel_init_render_ring_buffer(struct drm_device *dev) |
1588 | { | |
1589 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1ec14ad3 | 1590 | struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; |
5c1143bb | 1591 | |
59465b5f DV |
1592 | ring->name = "render ring"; |
1593 | ring->id = RCS; | |
1594 | ring->mmio_base = RENDER_RING_BASE; | |
1595 | ||
1ec14ad3 CW |
1596 | if (INTEL_INFO(dev)->gen >= 6) { |
1597 | ring->add_request = gen6_add_request; | |
4772eaeb | 1598 | ring->flush = gen7_render_ring_flush; |
6c6cf5aa | 1599 | if (INTEL_INFO(dev)->gen == 6) |
b3111509 | 1600 | ring->flush = gen6_render_ring_flush; |
25c06300 BW |
1601 | ring->irq_get = gen6_ring_get_irq; |
1602 | ring->irq_put = gen6_ring_put_irq; | |
6a848ccb | 1603 | ring->irq_enable_mask = GT_USER_INTERRUPT; |
4cd53c0c | 1604 | ring->get_seqno = gen6_ring_get_seqno; |
686cb5f9 | 1605 | ring->sync_to = gen6_ring_sync; |
59465b5f DV |
1606 | ring->semaphore_register[0] = MI_SEMAPHORE_SYNC_INVALID; |
1607 | ring->semaphore_register[1] = MI_SEMAPHORE_SYNC_RV; | |
1608 | ring->semaphore_register[2] = MI_SEMAPHORE_SYNC_RB; | |
1609 | ring->signal_mbox[0] = GEN6_VRSYNC; | |
1610 | ring->signal_mbox[1] = GEN6_BRSYNC; | |
c6df541c CW |
1611 | } else if (IS_GEN5(dev)) { |
1612 | ring->add_request = pc_render_add_request; | |
46f0f8d1 | 1613 | ring->flush = gen4_render_ring_flush; |
c6df541c | 1614 | ring->get_seqno = pc_render_get_seqno; |
e48d8634 DV |
1615 | ring->irq_get = gen5_ring_get_irq; |
1616 | ring->irq_put = gen5_ring_put_irq; | |
e3670319 | 1617 | ring->irq_enable_mask = GT_USER_INTERRUPT | GT_PIPE_NOTIFY; |
59465b5f | 1618 | } else { |
8620a3a9 | 1619 | ring->add_request = i9xx_add_request; |
46f0f8d1 CW |
1620 | if (INTEL_INFO(dev)->gen < 4) |
1621 | ring->flush = gen2_render_ring_flush; | |
1622 | else | |
1623 | ring->flush = gen4_render_ring_flush; | |
59465b5f | 1624 | ring->get_seqno = ring_get_seqno; |
c2798b19 CW |
1625 | if (IS_GEN2(dev)) { |
1626 | ring->irq_get = i8xx_ring_get_irq; | |
1627 | ring->irq_put = i8xx_ring_put_irq; | |
1628 | } else { | |
1629 | ring->irq_get = i9xx_ring_get_irq; | |
1630 | ring->irq_put = i9xx_ring_put_irq; | |
1631 | } | |
e3670319 | 1632 | ring->irq_enable_mask = I915_USER_INTERRUPT; |
1ec14ad3 | 1633 | } |
59465b5f | 1634 | ring->write_tail = ring_write_tail; |
d7d4eedd CW |
1635 | if (IS_HASWELL(dev)) |
1636 | ring->dispatch_execbuffer = hsw_ring_dispatch_execbuffer; | |
1637 | else if (INTEL_INFO(dev)->gen >= 6) | |
fb3256da DV |
1638 | ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer; |
1639 | else if (INTEL_INFO(dev)->gen >= 4) | |
1640 | ring->dispatch_execbuffer = i965_dispatch_execbuffer; | |
1641 | else if (IS_I830(dev) || IS_845G(dev)) | |
1642 | ring->dispatch_execbuffer = i830_dispatch_execbuffer; | |
1643 | else | |
1644 | ring->dispatch_execbuffer = i915_dispatch_execbuffer; | |
59465b5f DV |
1645 | ring->init = init_render_ring; |
1646 | ring->cleanup = render_ring_cleanup; | |
1647 | ||
1ec14ad3 | 1648 | return intel_init_ring_buffer(dev, ring); |
5c1143bb XH |
1649 | } |
1650 | ||
e8616b6c CW |
1651 | int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size) |
1652 | { | |
1653 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1654 | struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; | |
6b8294a4 | 1655 | int ret; |
e8616b6c | 1656 | |
59465b5f DV |
1657 | ring->name = "render ring"; |
1658 | ring->id = RCS; | |
1659 | ring->mmio_base = RENDER_RING_BASE; | |
1660 | ||
e8616b6c | 1661 | if (INTEL_INFO(dev)->gen >= 6) { |
b4178f8a DV |
1662 | /* non-kms not supported on gen6+ */ |
1663 | return -ENODEV; | |
e8616b6c | 1664 | } |
28f0cbf7 DV |
1665 | |
1666 | /* Note: gem is not supported on gen5/ilk without kms (the corresponding | |
1667 | * gem_init ioctl returns with -ENODEV). Hence we do not need to set up | |
1668 | * the special gen5 functions. */ | |
1669 | ring->add_request = i9xx_add_request; | |
46f0f8d1 CW |
1670 | if (INTEL_INFO(dev)->gen < 4) |
1671 | ring->flush = gen2_render_ring_flush; | |
1672 | else | |
1673 | ring->flush = gen4_render_ring_flush; | |
28f0cbf7 | 1674 | ring->get_seqno = ring_get_seqno; |
c2798b19 CW |
1675 | if (IS_GEN2(dev)) { |
1676 | ring->irq_get = i8xx_ring_get_irq; | |
1677 | ring->irq_put = i8xx_ring_put_irq; | |
1678 | } else { | |
1679 | ring->irq_get = i9xx_ring_get_irq; | |
1680 | ring->irq_put = i9xx_ring_put_irq; | |
1681 | } | |
28f0cbf7 | 1682 | ring->irq_enable_mask = I915_USER_INTERRUPT; |
59465b5f | 1683 | ring->write_tail = ring_write_tail; |
fb3256da DV |
1684 | if (INTEL_INFO(dev)->gen >= 4) |
1685 | ring->dispatch_execbuffer = i965_dispatch_execbuffer; | |
1686 | else if (IS_I830(dev) || IS_845G(dev)) | |
1687 | ring->dispatch_execbuffer = i830_dispatch_execbuffer; | |
1688 | else | |
1689 | ring->dispatch_execbuffer = i915_dispatch_execbuffer; | |
59465b5f DV |
1690 | ring->init = init_render_ring; |
1691 | ring->cleanup = render_ring_cleanup; | |
e8616b6c CW |
1692 | |
1693 | ring->dev = dev; | |
1694 | INIT_LIST_HEAD(&ring->active_list); | |
1695 | INIT_LIST_HEAD(&ring->request_list); | |
e8616b6c CW |
1696 | |
1697 | ring->size = size; | |
1698 | ring->effective_size = ring->size; | |
17f10fdc | 1699 | if (IS_I830(ring->dev) || IS_845G(ring->dev)) |
e8616b6c CW |
1700 | ring->effective_size -= 128; |
1701 | ||
4225d0f2 DV |
1702 | ring->virtual_start = ioremap_wc(start, size); |
1703 | if (ring->virtual_start == NULL) { | |
e8616b6c CW |
1704 | DRM_ERROR("can not ioremap virtual address for" |
1705 | " ring buffer\n"); | |
1706 | return -ENOMEM; | |
1707 | } | |
1708 | ||
6b8294a4 CW |
1709 | if (!I915_NEED_GFX_HWS(dev)) { |
1710 | ret = init_phys_hws_pga(ring); | |
1711 | if (ret) | |
1712 | return ret; | |
1713 | } | |
1714 | ||
e8616b6c CW |
1715 | return 0; |
1716 | } | |
1717 | ||
5c1143bb XH |
1718 | int intel_init_bsd_ring_buffer(struct drm_device *dev) |
1719 | { | |
1720 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1ec14ad3 | 1721 | struct intel_ring_buffer *ring = &dev_priv->ring[VCS]; |
5c1143bb | 1722 | |
58fa3835 DV |
1723 | ring->name = "bsd ring"; |
1724 | ring->id = VCS; | |
1725 | ||
0fd2c201 | 1726 | ring->write_tail = ring_write_tail; |
58fa3835 DV |
1727 | if (IS_GEN6(dev) || IS_GEN7(dev)) { |
1728 | ring->mmio_base = GEN6_BSD_RING_BASE; | |
0fd2c201 DV |
1729 | /* gen6 bsd needs a special wa for tail updates */ |
1730 | if (IS_GEN6(dev)) | |
1731 | ring->write_tail = gen6_bsd_ring_write_tail; | |
58fa3835 DV |
1732 | ring->flush = gen6_ring_flush; |
1733 | ring->add_request = gen6_add_request; | |
1734 | ring->get_seqno = gen6_ring_get_seqno; | |
1735 | ring->irq_enable_mask = GEN6_BSD_USER_INTERRUPT; | |
1736 | ring->irq_get = gen6_ring_get_irq; | |
1737 | ring->irq_put = gen6_ring_put_irq; | |
1738 | ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer; | |
686cb5f9 | 1739 | ring->sync_to = gen6_ring_sync; |
58fa3835 DV |
1740 | ring->semaphore_register[0] = MI_SEMAPHORE_SYNC_VR; |
1741 | ring->semaphore_register[1] = MI_SEMAPHORE_SYNC_INVALID; | |
1742 | ring->semaphore_register[2] = MI_SEMAPHORE_SYNC_VB; | |
1743 | ring->signal_mbox[0] = GEN6_RVSYNC; | |
1744 | ring->signal_mbox[1] = GEN6_BVSYNC; | |
1745 | } else { | |
1746 | ring->mmio_base = BSD_RING_BASE; | |
58fa3835 | 1747 | ring->flush = bsd_ring_flush; |
8620a3a9 | 1748 | ring->add_request = i9xx_add_request; |
58fa3835 | 1749 | ring->get_seqno = ring_get_seqno; |
e48d8634 | 1750 | if (IS_GEN5(dev)) { |
e3670319 | 1751 | ring->irq_enable_mask = GT_BSD_USER_INTERRUPT; |
e48d8634 DV |
1752 | ring->irq_get = gen5_ring_get_irq; |
1753 | ring->irq_put = gen5_ring_put_irq; | |
1754 | } else { | |
e3670319 | 1755 | ring->irq_enable_mask = I915_BSD_USER_INTERRUPT; |
e48d8634 DV |
1756 | ring->irq_get = i9xx_ring_get_irq; |
1757 | ring->irq_put = i9xx_ring_put_irq; | |
1758 | } | |
fb3256da | 1759 | ring->dispatch_execbuffer = i965_dispatch_execbuffer; |
58fa3835 DV |
1760 | } |
1761 | ring->init = init_ring_common; | |
1762 | ||
1ec14ad3 | 1763 | return intel_init_ring_buffer(dev, ring); |
5c1143bb | 1764 | } |
549f7365 CW |
1765 | |
1766 | int intel_init_blt_ring_buffer(struct drm_device *dev) | |
1767 | { | |
1768 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1ec14ad3 | 1769 | struct intel_ring_buffer *ring = &dev_priv->ring[BCS]; |
549f7365 | 1770 | |
3535d9dd DV |
1771 | ring->name = "blitter ring"; |
1772 | ring->id = BCS; | |
1773 | ||
1774 | ring->mmio_base = BLT_RING_BASE; | |
1775 | ring->write_tail = ring_write_tail; | |
1776 | ring->flush = blt_ring_flush; | |
1777 | ring->add_request = gen6_add_request; | |
1778 | ring->get_seqno = gen6_ring_get_seqno; | |
1779 | ring->irq_enable_mask = GEN6_BLITTER_USER_INTERRUPT; | |
1780 | ring->irq_get = gen6_ring_get_irq; | |
1781 | ring->irq_put = gen6_ring_put_irq; | |
1782 | ring->dispatch_execbuffer = gen6_ring_dispatch_execbuffer; | |
686cb5f9 | 1783 | ring->sync_to = gen6_ring_sync; |
3535d9dd DV |
1784 | ring->semaphore_register[0] = MI_SEMAPHORE_SYNC_BR; |
1785 | ring->semaphore_register[1] = MI_SEMAPHORE_SYNC_BV; | |
1786 | ring->semaphore_register[2] = MI_SEMAPHORE_SYNC_INVALID; | |
1787 | ring->signal_mbox[0] = GEN6_RBSYNC; | |
1788 | ring->signal_mbox[1] = GEN6_VBSYNC; | |
1789 | ring->init = init_ring_common; | |
549f7365 | 1790 | |
1ec14ad3 | 1791 | return intel_init_ring_buffer(dev, ring); |
549f7365 | 1792 | } |
a7b9761d CW |
1793 | |
1794 | int | |
1795 | intel_ring_flush_all_caches(struct intel_ring_buffer *ring) | |
1796 | { | |
1797 | int ret; | |
1798 | ||
1799 | if (!ring->gpu_caches_dirty) | |
1800 | return 0; | |
1801 | ||
1802 | ret = ring->flush(ring, 0, I915_GEM_GPU_DOMAINS); | |
1803 | if (ret) | |
1804 | return ret; | |
1805 | ||
1806 | trace_i915_gem_ring_flush(ring, 0, I915_GEM_GPU_DOMAINS); | |
1807 | ||
1808 | ring->gpu_caches_dirty = false; | |
1809 | return 0; | |
1810 | } | |
1811 | ||
1812 | int | |
1813 | intel_ring_invalidate_all_caches(struct intel_ring_buffer *ring) | |
1814 | { | |
1815 | uint32_t flush_domains; | |
1816 | int ret; | |
1817 | ||
1818 | flush_domains = 0; | |
1819 | if (ring->gpu_caches_dirty) | |
1820 | flush_domains = I915_GEM_GPU_DOMAINS; | |
1821 | ||
1822 | ret = ring->flush(ring, I915_GEM_GPU_DOMAINS, flush_domains); | |
1823 | if (ret) | |
1824 | return ret; | |
1825 | ||
1826 | trace_i915_gem_ring_flush(ring, I915_GEM_GPU_DOMAINS, flush_domains); | |
1827 | ||
1828 | ring->gpu_caches_dirty = false; | |
1829 | return 0; | |
1830 | } |