Commit | Line | Data |
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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 | ||
30 | #include "drmP.h" | |
31 | #include "drm.h" | |
62fdfeaf | 32 | #include "i915_drv.h" |
8187a2b7 | 33 | #include "i915_drm.h" |
62fdfeaf | 34 | #include "i915_trace.h" |
881f47b6 | 35 | #include "intel_drv.h" |
62fdfeaf | 36 | |
8d315287 JB |
37 | /* |
38 | * 965+ support PIPE_CONTROL commands, which provide finer grained control | |
39 | * over cache flushing. | |
40 | */ | |
41 | struct pipe_control { | |
42 | struct drm_i915_gem_object *obj; | |
43 | volatile u32 *cpu_page; | |
44 | u32 gtt_offset; | |
45 | }; | |
46 | ||
c7dca47b CW |
47 | static inline int ring_space(struct intel_ring_buffer *ring) |
48 | { | |
49 | int space = (ring->head & HEAD_ADDR) - (ring->tail + 8); | |
50 | if (space < 0) | |
51 | space += ring->size; | |
52 | return space; | |
53 | } | |
54 | ||
6f392d54 CW |
55 | static u32 i915_gem_get_seqno(struct drm_device *dev) |
56 | { | |
57 | drm_i915_private_t *dev_priv = dev->dev_private; | |
58 | u32 seqno; | |
59 | ||
60 | seqno = dev_priv->next_seqno; | |
61 | ||
62 | /* reserve 0 for non-seqno */ | |
63 | if (++dev_priv->next_seqno == 0) | |
64 | dev_priv->next_seqno = 1; | |
65 | ||
66 | return seqno; | |
67 | } | |
68 | ||
b72f3acb | 69 | static int |
78501eac | 70 | render_ring_flush(struct intel_ring_buffer *ring, |
ab6f8e32 CW |
71 | u32 invalidate_domains, |
72 | u32 flush_domains) | |
62fdfeaf | 73 | { |
78501eac | 74 | struct drm_device *dev = ring->dev; |
6f392d54 | 75 | u32 cmd; |
b72f3acb | 76 | int ret; |
6f392d54 | 77 | |
36d527de CW |
78 | /* |
79 | * read/write caches: | |
80 | * | |
81 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is | |
82 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is | |
83 | * also flushed at 2d versus 3d pipeline switches. | |
84 | * | |
85 | * read-only caches: | |
86 | * | |
87 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if | |
88 | * MI_READ_FLUSH is set, and is always flushed on 965. | |
89 | * | |
90 | * I915_GEM_DOMAIN_COMMAND may not exist? | |
91 | * | |
92 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is | |
93 | * invalidated when MI_EXE_FLUSH is set. | |
94 | * | |
95 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is | |
96 | * invalidated with every MI_FLUSH. | |
97 | * | |
98 | * TLBs: | |
99 | * | |
100 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND | |
101 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and | |
102 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER | |
103 | * are flushed at any MI_FLUSH. | |
104 | */ | |
105 | ||
106 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; | |
107 | if ((invalidate_domains|flush_domains) & | |
108 | I915_GEM_DOMAIN_RENDER) | |
109 | cmd &= ~MI_NO_WRITE_FLUSH; | |
110 | if (INTEL_INFO(dev)->gen < 4) { | |
62fdfeaf | 111 | /* |
36d527de CW |
112 | * On the 965, the sampler cache always gets flushed |
113 | * and this bit is reserved. | |
62fdfeaf | 114 | */ |
36d527de CW |
115 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) |
116 | cmd |= MI_READ_FLUSH; | |
117 | } | |
118 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) | |
119 | cmd |= MI_EXE_FLUSH; | |
62fdfeaf | 120 | |
36d527de CW |
121 | if (invalidate_domains & I915_GEM_DOMAIN_COMMAND && |
122 | (IS_G4X(dev) || IS_GEN5(dev))) | |
123 | cmd |= MI_INVALIDATE_ISP; | |
70eac33e | 124 | |
36d527de CW |
125 | ret = intel_ring_begin(ring, 2); |
126 | if (ret) | |
127 | return ret; | |
b72f3acb | 128 | |
36d527de CW |
129 | intel_ring_emit(ring, cmd); |
130 | intel_ring_emit(ring, MI_NOOP); | |
131 | intel_ring_advance(ring); | |
b72f3acb CW |
132 | |
133 | return 0; | |
8187a2b7 ZN |
134 | } |
135 | ||
8d315287 JB |
136 | /** |
137 | * Emits a PIPE_CONTROL with a non-zero post-sync operation, for | |
138 | * implementing two workarounds on gen6. From section 1.4.7.1 | |
139 | * "PIPE_CONTROL" of the Sandy Bridge PRM volume 2 part 1: | |
140 | * | |
141 | * [DevSNB-C+{W/A}] Before any depth stall flush (including those | |
142 | * produced by non-pipelined state commands), software needs to first | |
143 | * send a PIPE_CONTROL with no bits set except Post-Sync Operation != | |
144 | * 0. | |
145 | * | |
146 | * [Dev-SNB{W/A}]: Before a PIPE_CONTROL with Write Cache Flush Enable | |
147 | * =1, a PIPE_CONTROL with any non-zero post-sync-op is required. | |
148 | * | |
149 | * And the workaround for these two requires this workaround first: | |
150 | * | |
151 | * [Dev-SNB{W/A}]: Pipe-control with CS-stall bit set must be sent | |
152 | * BEFORE the pipe-control with a post-sync op and no write-cache | |
153 | * flushes. | |
154 | * | |
155 | * And this last workaround is tricky because of the requirements on | |
156 | * that bit. From section 1.4.7.2.3 "Stall" of the Sandy Bridge PRM | |
157 | * volume 2 part 1: | |
158 | * | |
159 | * "1 of the following must also be set: | |
160 | * - Render Target Cache Flush Enable ([12] of DW1) | |
161 | * - Depth Cache Flush Enable ([0] of DW1) | |
162 | * - Stall at Pixel Scoreboard ([1] of DW1) | |
163 | * - Depth Stall ([13] of DW1) | |
164 | * - Post-Sync Operation ([13] of DW1) | |
165 | * - Notify Enable ([8] of DW1)" | |
166 | * | |
167 | * The cache flushes require the workaround flush that triggered this | |
168 | * one, so we can't use it. Depth stall would trigger the same. | |
169 | * Post-sync nonzero is what triggered this second workaround, so we | |
170 | * can't use that one either. Notify enable is IRQs, which aren't | |
171 | * really our business. That leaves only stall at scoreboard. | |
172 | */ | |
173 | static int | |
174 | intel_emit_post_sync_nonzero_flush(struct intel_ring_buffer *ring) | |
175 | { | |
176 | struct pipe_control *pc = ring->private; | |
177 | u32 scratch_addr = pc->gtt_offset + 128; | |
178 | int ret; | |
179 | ||
180 | ||
181 | ret = intel_ring_begin(ring, 6); | |
182 | if (ret) | |
183 | return ret; | |
184 | ||
185 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(5)); | |
186 | intel_ring_emit(ring, PIPE_CONTROL_CS_STALL | | |
187 | PIPE_CONTROL_STALL_AT_SCOREBOARD); | |
188 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); /* address */ | |
189 | intel_ring_emit(ring, 0); /* low dword */ | |
190 | intel_ring_emit(ring, 0); /* high dword */ | |
191 | intel_ring_emit(ring, MI_NOOP); | |
192 | intel_ring_advance(ring); | |
193 | ||
194 | ret = intel_ring_begin(ring, 6); | |
195 | if (ret) | |
196 | return ret; | |
197 | ||
198 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(5)); | |
199 | intel_ring_emit(ring, PIPE_CONTROL_QW_WRITE); | |
200 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); /* address */ | |
201 | intel_ring_emit(ring, 0); | |
202 | intel_ring_emit(ring, 0); | |
203 | intel_ring_emit(ring, MI_NOOP); | |
204 | intel_ring_advance(ring); | |
205 | ||
206 | return 0; | |
207 | } | |
208 | ||
209 | static int | |
210 | gen6_render_ring_flush(struct intel_ring_buffer *ring, | |
211 | u32 invalidate_domains, u32 flush_domains) | |
212 | { | |
213 | u32 flags = 0; | |
214 | struct pipe_control *pc = ring->private; | |
215 | u32 scratch_addr = pc->gtt_offset + 128; | |
216 | int ret; | |
217 | ||
218 | /* Force SNB workarounds for PIPE_CONTROL flushes */ | |
219 | intel_emit_post_sync_nonzero_flush(ring); | |
220 | ||
221 | /* Just flush everything. Experiments have shown that reducing the | |
222 | * number of bits based on the write domains has little performance | |
223 | * impact. | |
224 | */ | |
225 | flags |= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH; | |
226 | flags |= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE; | |
227 | flags |= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE; | |
228 | flags |= PIPE_CONTROL_DEPTH_CACHE_FLUSH; | |
229 | flags |= PIPE_CONTROL_VF_CACHE_INVALIDATE; | |
230 | flags |= PIPE_CONTROL_CONST_CACHE_INVALIDATE; | |
231 | flags |= PIPE_CONTROL_STATE_CACHE_INVALIDATE; | |
232 | ||
233 | ret = intel_ring_begin(ring, 6); | |
234 | if (ret) | |
235 | return ret; | |
236 | ||
237 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(5)); | |
238 | intel_ring_emit(ring, flags); | |
239 | intel_ring_emit(ring, scratch_addr | PIPE_CONTROL_GLOBAL_GTT); | |
240 | intel_ring_emit(ring, 0); /* lower dword */ | |
241 | intel_ring_emit(ring, 0); /* uppwer dword */ | |
242 | intel_ring_emit(ring, MI_NOOP); | |
243 | intel_ring_advance(ring); | |
244 | ||
245 | return 0; | |
246 | } | |
247 | ||
78501eac | 248 | static void ring_write_tail(struct intel_ring_buffer *ring, |
297b0c5b | 249 | u32 value) |
d46eefa2 | 250 | { |
78501eac | 251 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
297b0c5b | 252 | I915_WRITE_TAIL(ring, value); |
d46eefa2 XH |
253 | } |
254 | ||
78501eac | 255 | u32 intel_ring_get_active_head(struct intel_ring_buffer *ring) |
8187a2b7 | 256 | { |
78501eac CW |
257 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
258 | u32 acthd_reg = INTEL_INFO(ring->dev)->gen >= 4 ? | |
3d281d8c | 259 | RING_ACTHD(ring->mmio_base) : ACTHD; |
8187a2b7 ZN |
260 | |
261 | return I915_READ(acthd_reg); | |
262 | } | |
263 | ||
78501eac | 264 | static int init_ring_common(struct intel_ring_buffer *ring) |
8187a2b7 | 265 | { |
78501eac | 266 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
05394f39 | 267 | struct drm_i915_gem_object *obj = ring->obj; |
8187a2b7 | 268 | u32 head; |
8187a2b7 ZN |
269 | |
270 | /* Stop the ring if it's running. */ | |
7f2ab699 | 271 | I915_WRITE_CTL(ring, 0); |
570ef608 | 272 | I915_WRITE_HEAD(ring, 0); |
78501eac | 273 | ring->write_tail(ring, 0); |
8187a2b7 ZN |
274 | |
275 | /* Initialize the ring. */ | |
05394f39 | 276 | I915_WRITE_START(ring, obj->gtt_offset); |
570ef608 | 277 | head = I915_READ_HEAD(ring) & HEAD_ADDR; |
8187a2b7 ZN |
278 | |
279 | /* G45 ring initialization fails to reset head to zero */ | |
280 | if (head != 0) { | |
6fd0d56e CW |
281 | DRM_DEBUG_KMS("%s head not reset to zero " |
282 | "ctl %08x head %08x tail %08x start %08x\n", | |
283 | ring->name, | |
284 | I915_READ_CTL(ring), | |
285 | I915_READ_HEAD(ring), | |
286 | I915_READ_TAIL(ring), | |
287 | I915_READ_START(ring)); | |
8187a2b7 | 288 | |
570ef608 | 289 | I915_WRITE_HEAD(ring, 0); |
8187a2b7 | 290 | |
6fd0d56e CW |
291 | if (I915_READ_HEAD(ring) & HEAD_ADDR) { |
292 | DRM_ERROR("failed to set %s head to zero " | |
293 | "ctl %08x head %08x tail %08x start %08x\n", | |
294 | ring->name, | |
295 | I915_READ_CTL(ring), | |
296 | I915_READ_HEAD(ring), | |
297 | I915_READ_TAIL(ring), | |
298 | I915_READ_START(ring)); | |
299 | } | |
8187a2b7 ZN |
300 | } |
301 | ||
7f2ab699 | 302 | I915_WRITE_CTL(ring, |
ae69b42a | 303 | ((ring->size - PAGE_SIZE) & RING_NR_PAGES) |
6aa56062 | 304 | | RING_REPORT_64K | RING_VALID); |
8187a2b7 | 305 | |
8187a2b7 | 306 | /* If the head is still not zero, the ring is dead */ |
176f28eb | 307 | if ((I915_READ_CTL(ring) & RING_VALID) == 0 || |
05394f39 | 308 | I915_READ_START(ring) != obj->gtt_offset || |
176f28eb | 309 | (I915_READ_HEAD(ring) & HEAD_ADDR) != 0) { |
e74cfed5 CW |
310 | DRM_ERROR("%s initialization failed " |
311 | "ctl %08x head %08x tail %08x start %08x\n", | |
312 | ring->name, | |
313 | I915_READ_CTL(ring), | |
314 | I915_READ_HEAD(ring), | |
315 | I915_READ_TAIL(ring), | |
316 | I915_READ_START(ring)); | |
317 | return -EIO; | |
8187a2b7 ZN |
318 | } |
319 | ||
78501eac CW |
320 | if (!drm_core_check_feature(ring->dev, DRIVER_MODESET)) |
321 | i915_kernel_lost_context(ring->dev); | |
8187a2b7 | 322 | else { |
c7dca47b | 323 | ring->head = I915_READ_HEAD(ring); |
870e86dd | 324 | ring->tail = I915_READ_TAIL(ring) & TAIL_ADDR; |
c7dca47b | 325 | ring->space = ring_space(ring); |
8187a2b7 | 326 | } |
1ec14ad3 | 327 | |
8187a2b7 ZN |
328 | return 0; |
329 | } | |
330 | ||
c6df541c CW |
331 | static int |
332 | init_pipe_control(struct intel_ring_buffer *ring) | |
333 | { | |
334 | struct pipe_control *pc; | |
335 | struct drm_i915_gem_object *obj; | |
336 | int ret; | |
337 | ||
338 | if (ring->private) | |
339 | return 0; | |
340 | ||
341 | pc = kmalloc(sizeof(*pc), GFP_KERNEL); | |
342 | if (!pc) | |
343 | return -ENOMEM; | |
344 | ||
345 | obj = i915_gem_alloc_object(ring->dev, 4096); | |
346 | if (obj == NULL) { | |
347 | DRM_ERROR("Failed to allocate seqno page\n"); | |
348 | ret = -ENOMEM; | |
349 | goto err; | |
350 | } | |
e4ffd173 CW |
351 | |
352 | i915_gem_object_set_cache_level(obj, I915_CACHE_LLC); | |
c6df541c CW |
353 | |
354 | ret = i915_gem_object_pin(obj, 4096, true); | |
355 | if (ret) | |
356 | goto err_unref; | |
357 | ||
358 | pc->gtt_offset = obj->gtt_offset; | |
359 | pc->cpu_page = kmap(obj->pages[0]); | |
360 | if (pc->cpu_page == NULL) | |
361 | goto err_unpin; | |
362 | ||
363 | pc->obj = obj; | |
364 | ring->private = pc; | |
365 | return 0; | |
366 | ||
367 | err_unpin: | |
368 | i915_gem_object_unpin(obj); | |
369 | err_unref: | |
370 | drm_gem_object_unreference(&obj->base); | |
371 | err: | |
372 | kfree(pc); | |
373 | return ret; | |
374 | } | |
375 | ||
376 | static void | |
377 | cleanup_pipe_control(struct intel_ring_buffer *ring) | |
378 | { | |
379 | struct pipe_control *pc = ring->private; | |
380 | struct drm_i915_gem_object *obj; | |
381 | ||
382 | if (!ring->private) | |
383 | return; | |
384 | ||
385 | obj = pc->obj; | |
386 | kunmap(obj->pages[0]); | |
387 | i915_gem_object_unpin(obj); | |
388 | drm_gem_object_unreference(&obj->base); | |
389 | ||
390 | kfree(pc); | |
391 | ring->private = NULL; | |
392 | } | |
393 | ||
78501eac | 394 | static int init_render_ring(struct intel_ring_buffer *ring) |
8187a2b7 | 395 | { |
78501eac | 396 | struct drm_device *dev = ring->dev; |
1ec14ad3 | 397 | struct drm_i915_private *dev_priv = dev->dev_private; |
78501eac | 398 | int ret = init_ring_common(ring); |
a69ffdbf | 399 | |
a6c45cf0 | 400 | if (INTEL_INFO(dev)->gen > 3) { |
78501eac | 401 | int mode = VS_TIMER_DISPATCH << 16 | VS_TIMER_DISPATCH; |
65d3eb1e | 402 | if (IS_GEN6(dev) || IS_GEN7(dev)) |
a69ffdbf ZW |
403 | mode |= MI_FLUSH_ENABLE << 16 | MI_FLUSH_ENABLE; |
404 | I915_WRITE(MI_MODE, mode); | |
b095cd0a JB |
405 | if (IS_GEN7(dev)) |
406 | I915_WRITE(GFX_MODE_GEN7, | |
407 | GFX_MODE_DISABLE(GFX_TLB_INVALIDATE_ALWAYS) | | |
408 | GFX_MODE_ENABLE(GFX_REPLAY_MODE)); | |
8187a2b7 | 409 | } |
78501eac | 410 | |
8d315287 | 411 | if (INTEL_INFO(dev)->gen >= 5) { |
c6df541c CW |
412 | ret = init_pipe_control(ring); |
413 | if (ret) | |
414 | return ret; | |
415 | } | |
416 | ||
84f9f938 BW |
417 | if (INTEL_INFO(dev)->gen >= 6) { |
418 | I915_WRITE(INSTPM, | |
419 | INSTPM_FORCE_ORDERING << 16 | INSTPM_FORCE_ORDERING); | |
420 | } | |
421 | ||
8187a2b7 ZN |
422 | return ret; |
423 | } | |
424 | ||
c6df541c CW |
425 | static void render_ring_cleanup(struct intel_ring_buffer *ring) |
426 | { | |
427 | if (!ring->private) | |
428 | return; | |
429 | ||
430 | cleanup_pipe_control(ring); | |
431 | } | |
432 | ||
1ec14ad3 | 433 | static void |
c8c99b0f BW |
434 | update_mboxes(struct intel_ring_buffer *ring, |
435 | u32 seqno, | |
436 | u32 mmio_offset) | |
1ec14ad3 | 437 | { |
c8c99b0f BW |
438 | intel_ring_emit(ring, MI_SEMAPHORE_MBOX | |
439 | MI_SEMAPHORE_GLOBAL_GTT | | |
440 | MI_SEMAPHORE_REGISTER | | |
441 | MI_SEMAPHORE_UPDATE); | |
1ec14ad3 | 442 | intel_ring_emit(ring, seqno); |
c8c99b0f | 443 | intel_ring_emit(ring, mmio_offset); |
1ec14ad3 CW |
444 | } |
445 | ||
c8c99b0f BW |
446 | /** |
447 | * gen6_add_request - Update the semaphore mailbox registers | |
448 | * | |
449 | * @ring - ring that is adding a request | |
450 | * @seqno - return seqno stuck into the ring | |
451 | * | |
452 | * Update the mailbox registers in the *other* rings with the current seqno. | |
453 | * This acts like a signal in the canonical semaphore. | |
454 | */ | |
1ec14ad3 CW |
455 | static int |
456 | gen6_add_request(struct intel_ring_buffer *ring, | |
c8c99b0f | 457 | u32 *seqno) |
1ec14ad3 | 458 | { |
c8c99b0f BW |
459 | u32 mbox1_reg; |
460 | u32 mbox2_reg; | |
1ec14ad3 CW |
461 | int ret; |
462 | ||
463 | ret = intel_ring_begin(ring, 10); | |
464 | if (ret) | |
465 | return ret; | |
466 | ||
c8c99b0f BW |
467 | mbox1_reg = ring->signal_mbox[0]; |
468 | mbox2_reg = ring->signal_mbox[1]; | |
1ec14ad3 | 469 | |
c8c99b0f BW |
470 | *seqno = i915_gem_get_seqno(ring->dev); |
471 | ||
472 | update_mboxes(ring, *seqno, mbox1_reg); | |
473 | update_mboxes(ring, *seqno, mbox2_reg); | |
1ec14ad3 CW |
474 | intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
475 | intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
c8c99b0f | 476 | intel_ring_emit(ring, *seqno); |
1ec14ad3 CW |
477 | intel_ring_emit(ring, MI_USER_INTERRUPT); |
478 | intel_ring_advance(ring); | |
479 | ||
1ec14ad3 CW |
480 | return 0; |
481 | } | |
482 | ||
c8c99b0f BW |
483 | /** |
484 | * intel_ring_sync - sync the waiter to the signaller on seqno | |
485 | * | |
486 | * @waiter - ring that is waiting | |
487 | * @signaller - ring which has, or will signal | |
488 | * @seqno - seqno which the waiter will block on | |
489 | */ | |
490 | static int | |
491 | intel_ring_sync(struct intel_ring_buffer *waiter, | |
492 | struct intel_ring_buffer *signaller, | |
493 | int ring, | |
1ec14ad3 CW |
494 | u32 seqno) |
495 | { | |
496 | int ret; | |
c8c99b0f BW |
497 | u32 dw1 = MI_SEMAPHORE_MBOX | |
498 | MI_SEMAPHORE_COMPARE | | |
499 | MI_SEMAPHORE_REGISTER; | |
1ec14ad3 | 500 | |
c8c99b0f | 501 | ret = intel_ring_begin(waiter, 4); |
1ec14ad3 CW |
502 | if (ret) |
503 | return ret; | |
504 | ||
c8c99b0f BW |
505 | intel_ring_emit(waiter, dw1 | signaller->semaphore_register[ring]); |
506 | intel_ring_emit(waiter, seqno); | |
507 | intel_ring_emit(waiter, 0); | |
508 | intel_ring_emit(waiter, MI_NOOP); | |
509 | intel_ring_advance(waiter); | |
1ec14ad3 CW |
510 | |
511 | return 0; | |
512 | } | |
513 | ||
c8c99b0f BW |
514 | /* VCS->RCS (RVSYNC) or BCS->RCS (RBSYNC) */ |
515 | int | |
516 | render_ring_sync_to(struct intel_ring_buffer *waiter, | |
517 | struct intel_ring_buffer *signaller, | |
518 | u32 seqno) | |
519 | { | |
520 | WARN_ON(signaller->semaphore_register[RCS] == MI_SEMAPHORE_SYNC_INVALID); | |
521 | return intel_ring_sync(waiter, | |
522 | signaller, | |
523 | RCS, | |
524 | seqno); | |
525 | } | |
526 | ||
527 | /* RCS->VCS (VRSYNC) or BCS->VCS (VBSYNC) */ | |
528 | int | |
529 | gen6_bsd_ring_sync_to(struct intel_ring_buffer *waiter, | |
530 | struct intel_ring_buffer *signaller, | |
531 | u32 seqno) | |
532 | { | |
533 | WARN_ON(signaller->semaphore_register[VCS] == MI_SEMAPHORE_SYNC_INVALID); | |
534 | return intel_ring_sync(waiter, | |
535 | signaller, | |
536 | VCS, | |
537 | seqno); | |
538 | } | |
539 | ||
540 | /* RCS->BCS (BRSYNC) or VCS->BCS (BVSYNC) */ | |
541 | int | |
542 | gen6_blt_ring_sync_to(struct intel_ring_buffer *waiter, | |
543 | struct intel_ring_buffer *signaller, | |
544 | u32 seqno) | |
545 | { | |
546 | WARN_ON(signaller->semaphore_register[BCS] == MI_SEMAPHORE_SYNC_INVALID); | |
547 | return intel_ring_sync(waiter, | |
548 | signaller, | |
549 | BCS, | |
550 | seqno); | |
551 | } | |
552 | ||
553 | ||
554 | ||
c6df541c CW |
555 | #define PIPE_CONTROL_FLUSH(ring__, addr__) \ |
556 | do { \ | |
fcbc34e4 KG |
557 | intel_ring_emit(ring__, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | \ |
558 | PIPE_CONTROL_DEPTH_STALL); \ | |
c6df541c CW |
559 | intel_ring_emit(ring__, (addr__) | PIPE_CONTROL_GLOBAL_GTT); \ |
560 | intel_ring_emit(ring__, 0); \ | |
561 | intel_ring_emit(ring__, 0); \ | |
562 | } while (0) | |
563 | ||
564 | static int | |
565 | pc_render_add_request(struct intel_ring_buffer *ring, | |
566 | u32 *result) | |
567 | { | |
568 | struct drm_device *dev = ring->dev; | |
569 | u32 seqno = i915_gem_get_seqno(dev); | |
570 | struct pipe_control *pc = ring->private; | |
571 | u32 scratch_addr = pc->gtt_offset + 128; | |
572 | int ret; | |
573 | ||
574 | /* For Ironlake, MI_USER_INTERRUPT was deprecated and apparently | |
575 | * incoherent with writes to memory, i.e. completely fubar, | |
576 | * so we need to use PIPE_NOTIFY instead. | |
577 | * | |
578 | * However, we also need to workaround the qword write | |
579 | * incoherence by flushing the 6 PIPE_NOTIFY buffers out to | |
580 | * memory before requesting an interrupt. | |
581 | */ | |
582 | ret = intel_ring_begin(ring, 32); | |
583 | if (ret) | |
584 | return ret; | |
585 | ||
fcbc34e4 | 586 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | |
9d971b37 KG |
587 | PIPE_CONTROL_WRITE_FLUSH | |
588 | PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE); | |
c6df541c CW |
589 | intel_ring_emit(ring, pc->gtt_offset | PIPE_CONTROL_GLOBAL_GTT); |
590 | intel_ring_emit(ring, seqno); | |
591 | intel_ring_emit(ring, 0); | |
592 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
593 | scratch_addr += 128; /* write to separate cachelines */ | |
594 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
595 | scratch_addr += 128; | |
596 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
597 | scratch_addr += 128; | |
598 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
599 | scratch_addr += 128; | |
600 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
601 | scratch_addr += 128; | |
602 | PIPE_CONTROL_FLUSH(ring, scratch_addr); | |
fcbc34e4 | 603 | intel_ring_emit(ring, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | |
9d971b37 KG |
604 | PIPE_CONTROL_WRITE_FLUSH | |
605 | PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE | | |
c6df541c CW |
606 | PIPE_CONTROL_NOTIFY); |
607 | intel_ring_emit(ring, pc->gtt_offset | PIPE_CONTROL_GLOBAL_GTT); | |
608 | intel_ring_emit(ring, seqno); | |
609 | intel_ring_emit(ring, 0); | |
610 | intel_ring_advance(ring); | |
611 | ||
612 | *result = seqno; | |
613 | return 0; | |
614 | } | |
615 | ||
1ec14ad3 CW |
616 | static int |
617 | render_ring_add_request(struct intel_ring_buffer *ring, | |
618 | u32 *result) | |
619 | { | |
620 | struct drm_device *dev = ring->dev; | |
621 | u32 seqno = i915_gem_get_seqno(dev); | |
622 | int ret; | |
3cce469c | 623 | |
1ec14ad3 CW |
624 | ret = intel_ring_begin(ring, 4); |
625 | if (ret) | |
626 | return ret; | |
3cce469c | 627 | |
1ec14ad3 CW |
628 | intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
629 | intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
630 | intel_ring_emit(ring, seqno); | |
631 | intel_ring_emit(ring, MI_USER_INTERRUPT); | |
3cce469c | 632 | intel_ring_advance(ring); |
1ec14ad3 | 633 | |
3cce469c CW |
634 | *result = seqno; |
635 | return 0; | |
62fdfeaf EA |
636 | } |
637 | ||
4cd53c0c DV |
638 | static u32 |
639 | gen6_ring_get_seqno(struct intel_ring_buffer *ring) | |
640 | { | |
641 | struct drm_device *dev = ring->dev; | |
642 | ||
643 | /* Workaround to force correct ordering between irq and seqno writes on | |
644 | * ivb (and maybe also on snb) by reading from a CS register (like | |
645 | * ACTHD) before reading the status page. */ | |
646 | if (IS_GEN7(dev)) | |
647 | intel_ring_get_active_head(ring); | |
648 | return intel_read_status_page(ring, I915_GEM_HWS_INDEX); | |
649 | } | |
650 | ||
8187a2b7 | 651 | static u32 |
1ec14ad3 | 652 | ring_get_seqno(struct intel_ring_buffer *ring) |
8187a2b7 | 653 | { |
1ec14ad3 CW |
654 | return intel_read_status_page(ring, I915_GEM_HWS_INDEX); |
655 | } | |
656 | ||
c6df541c CW |
657 | static u32 |
658 | pc_render_get_seqno(struct intel_ring_buffer *ring) | |
659 | { | |
660 | struct pipe_control *pc = ring->private; | |
661 | return pc->cpu_page[0]; | |
662 | } | |
663 | ||
0f46832f CW |
664 | static void |
665 | ironlake_enable_irq(drm_i915_private_t *dev_priv, u32 mask) | |
666 | { | |
667 | dev_priv->gt_irq_mask &= ~mask; | |
668 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
669 | POSTING_READ(GTIMR); | |
670 | } | |
671 | ||
672 | static void | |
673 | ironlake_disable_irq(drm_i915_private_t *dev_priv, u32 mask) | |
674 | { | |
675 | dev_priv->gt_irq_mask |= mask; | |
676 | I915_WRITE(GTIMR, dev_priv->gt_irq_mask); | |
677 | POSTING_READ(GTIMR); | |
678 | } | |
679 | ||
680 | static void | |
681 | i915_enable_irq(drm_i915_private_t *dev_priv, u32 mask) | |
682 | { | |
683 | dev_priv->irq_mask &= ~mask; | |
684 | I915_WRITE(IMR, dev_priv->irq_mask); | |
685 | POSTING_READ(IMR); | |
686 | } | |
687 | ||
688 | static void | |
689 | i915_disable_irq(drm_i915_private_t *dev_priv, u32 mask) | |
690 | { | |
691 | dev_priv->irq_mask |= mask; | |
692 | I915_WRITE(IMR, dev_priv->irq_mask); | |
693 | POSTING_READ(IMR); | |
694 | } | |
695 | ||
b13c2b96 | 696 | static bool |
1ec14ad3 | 697 | render_ring_get_irq(struct intel_ring_buffer *ring) |
62fdfeaf | 698 | { |
78501eac | 699 | struct drm_device *dev = ring->dev; |
01a03331 | 700 | drm_i915_private_t *dev_priv = dev->dev_private; |
62fdfeaf | 701 | |
b13c2b96 CW |
702 | if (!dev->irq_enabled) |
703 | return false; | |
704 | ||
0dc79fb2 | 705 | spin_lock(&ring->irq_lock); |
01a03331 | 706 | if (ring->irq_refcount++ == 0) { |
62fdfeaf | 707 | if (HAS_PCH_SPLIT(dev)) |
0f46832f CW |
708 | ironlake_enable_irq(dev_priv, |
709 | GT_PIPE_NOTIFY | GT_USER_INTERRUPT); | |
62fdfeaf EA |
710 | else |
711 | i915_enable_irq(dev_priv, I915_USER_INTERRUPT); | |
712 | } | |
0dc79fb2 | 713 | spin_unlock(&ring->irq_lock); |
b13c2b96 CW |
714 | |
715 | return true; | |
62fdfeaf EA |
716 | } |
717 | ||
8187a2b7 | 718 | static void |
1ec14ad3 | 719 | render_ring_put_irq(struct intel_ring_buffer *ring) |
62fdfeaf | 720 | { |
78501eac | 721 | struct drm_device *dev = ring->dev; |
01a03331 | 722 | drm_i915_private_t *dev_priv = dev->dev_private; |
62fdfeaf | 723 | |
0dc79fb2 | 724 | spin_lock(&ring->irq_lock); |
01a03331 | 725 | if (--ring->irq_refcount == 0) { |
62fdfeaf | 726 | if (HAS_PCH_SPLIT(dev)) |
0f46832f CW |
727 | ironlake_disable_irq(dev_priv, |
728 | GT_USER_INTERRUPT | | |
729 | GT_PIPE_NOTIFY); | |
62fdfeaf EA |
730 | else |
731 | i915_disable_irq(dev_priv, I915_USER_INTERRUPT); | |
732 | } | |
0dc79fb2 | 733 | spin_unlock(&ring->irq_lock); |
62fdfeaf EA |
734 | } |
735 | ||
78501eac | 736 | void intel_ring_setup_status_page(struct intel_ring_buffer *ring) |
8187a2b7 | 737 | { |
4593010b | 738 | struct drm_device *dev = ring->dev; |
78501eac | 739 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
4593010b EA |
740 | u32 mmio = 0; |
741 | ||
742 | /* The ring status page addresses are no longer next to the rest of | |
743 | * the ring registers as of gen7. | |
744 | */ | |
745 | if (IS_GEN7(dev)) { | |
746 | switch (ring->id) { | |
747 | case RING_RENDER: | |
748 | mmio = RENDER_HWS_PGA_GEN7; | |
749 | break; | |
750 | case RING_BLT: | |
751 | mmio = BLT_HWS_PGA_GEN7; | |
752 | break; | |
753 | case RING_BSD: | |
754 | mmio = BSD_HWS_PGA_GEN7; | |
755 | break; | |
756 | } | |
757 | } else if (IS_GEN6(ring->dev)) { | |
758 | mmio = RING_HWS_PGA_GEN6(ring->mmio_base); | |
759 | } else { | |
760 | mmio = RING_HWS_PGA(ring->mmio_base); | |
761 | } | |
762 | ||
78501eac CW |
763 | I915_WRITE(mmio, (u32)ring->status_page.gfx_addr); |
764 | POSTING_READ(mmio); | |
8187a2b7 ZN |
765 | } |
766 | ||
b72f3acb | 767 | static int |
78501eac CW |
768 | bsd_ring_flush(struct intel_ring_buffer *ring, |
769 | u32 invalidate_domains, | |
770 | u32 flush_domains) | |
d1b851fc | 771 | { |
b72f3acb CW |
772 | int ret; |
773 | ||
b72f3acb CW |
774 | ret = intel_ring_begin(ring, 2); |
775 | if (ret) | |
776 | return ret; | |
777 | ||
778 | intel_ring_emit(ring, MI_FLUSH); | |
779 | intel_ring_emit(ring, MI_NOOP); | |
780 | intel_ring_advance(ring); | |
781 | return 0; | |
d1b851fc ZN |
782 | } |
783 | ||
3cce469c | 784 | static int |
78501eac | 785 | ring_add_request(struct intel_ring_buffer *ring, |
3cce469c | 786 | u32 *result) |
d1b851fc ZN |
787 | { |
788 | u32 seqno; | |
3cce469c CW |
789 | int ret; |
790 | ||
791 | ret = intel_ring_begin(ring, 4); | |
792 | if (ret) | |
793 | return ret; | |
6f392d54 | 794 | |
78501eac | 795 | seqno = i915_gem_get_seqno(ring->dev); |
6f392d54 | 796 | |
3cce469c CW |
797 | intel_ring_emit(ring, MI_STORE_DWORD_INDEX); |
798 | intel_ring_emit(ring, I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
799 | intel_ring_emit(ring, seqno); | |
800 | intel_ring_emit(ring, MI_USER_INTERRUPT); | |
801 | intel_ring_advance(ring); | |
d1b851fc | 802 | |
3cce469c CW |
803 | *result = seqno; |
804 | return 0; | |
d1b851fc ZN |
805 | } |
806 | ||
0f46832f CW |
807 | static bool |
808 | gen6_ring_get_irq(struct intel_ring_buffer *ring, u32 gflag, u32 rflag) | |
809 | { | |
810 | struct drm_device *dev = ring->dev; | |
01a03331 | 811 | drm_i915_private_t *dev_priv = dev->dev_private; |
0f46832f CW |
812 | |
813 | if (!dev->irq_enabled) | |
814 | return false; | |
815 | ||
4cd53c0c DV |
816 | /* It looks like we need to prevent the gt from suspending while waiting |
817 | * for an notifiy irq, otherwise irqs seem to get lost on at least the | |
818 | * blt/bsd rings on ivb. */ | |
819 | if (IS_GEN7(dev)) | |
820 | gen6_gt_force_wake_get(dev_priv); | |
821 | ||
0dc79fb2 | 822 | spin_lock(&ring->irq_lock); |
01a03331 | 823 | if (ring->irq_refcount++ == 0) { |
0f46832f CW |
824 | ring->irq_mask &= ~rflag; |
825 | I915_WRITE_IMR(ring, ring->irq_mask); | |
826 | ironlake_enable_irq(dev_priv, gflag); | |
0f46832f | 827 | } |
0dc79fb2 | 828 | spin_unlock(&ring->irq_lock); |
0f46832f CW |
829 | |
830 | return true; | |
831 | } | |
832 | ||
833 | static void | |
834 | gen6_ring_put_irq(struct intel_ring_buffer *ring, u32 gflag, u32 rflag) | |
835 | { | |
836 | struct drm_device *dev = ring->dev; | |
01a03331 | 837 | drm_i915_private_t *dev_priv = dev->dev_private; |
0f46832f | 838 | |
0dc79fb2 | 839 | spin_lock(&ring->irq_lock); |
01a03331 | 840 | if (--ring->irq_refcount == 0) { |
0f46832f CW |
841 | ring->irq_mask |= rflag; |
842 | I915_WRITE_IMR(ring, ring->irq_mask); | |
843 | ironlake_disable_irq(dev_priv, gflag); | |
1ec14ad3 | 844 | } |
0dc79fb2 | 845 | spin_unlock(&ring->irq_lock); |
4cd53c0c DV |
846 | |
847 | if (IS_GEN7(dev)) | |
848 | gen6_gt_force_wake_put(dev_priv); | |
d1b851fc ZN |
849 | } |
850 | ||
b13c2b96 | 851 | static bool |
1ec14ad3 | 852 | bsd_ring_get_irq(struct intel_ring_buffer *ring) |
d1b851fc | 853 | { |
5bfa1063 FB |
854 | struct drm_device *dev = ring->dev; |
855 | drm_i915_private_t *dev_priv = dev->dev_private; | |
856 | ||
857 | if (!dev->irq_enabled) | |
858 | return false; | |
859 | ||
860 | spin_lock(&ring->irq_lock); | |
861 | if (ring->irq_refcount++ == 0) { | |
862 | if (IS_G4X(dev)) | |
863 | i915_enable_irq(dev_priv, I915_BSD_USER_INTERRUPT); | |
864 | else | |
865 | ironlake_enable_irq(dev_priv, GT_BSD_USER_INTERRUPT); | |
866 | } | |
867 | spin_unlock(&ring->irq_lock); | |
868 | ||
869 | return true; | |
1ec14ad3 CW |
870 | } |
871 | static void | |
872 | bsd_ring_put_irq(struct intel_ring_buffer *ring) | |
873 | { | |
5bfa1063 FB |
874 | struct drm_device *dev = ring->dev; |
875 | drm_i915_private_t *dev_priv = dev->dev_private; | |
876 | ||
877 | spin_lock(&ring->irq_lock); | |
878 | if (--ring->irq_refcount == 0) { | |
879 | if (IS_G4X(dev)) | |
880 | i915_disable_irq(dev_priv, I915_BSD_USER_INTERRUPT); | |
881 | else | |
882 | ironlake_disable_irq(dev_priv, GT_BSD_USER_INTERRUPT); | |
883 | } | |
884 | spin_unlock(&ring->irq_lock); | |
d1b851fc ZN |
885 | } |
886 | ||
887 | static int | |
c4e7a414 | 888 | ring_dispatch_execbuffer(struct intel_ring_buffer *ring, u32 offset, u32 length) |
d1b851fc | 889 | { |
e1f99ce6 | 890 | int ret; |
78501eac | 891 | |
e1f99ce6 CW |
892 | ret = intel_ring_begin(ring, 2); |
893 | if (ret) | |
894 | return ret; | |
895 | ||
78501eac | 896 | intel_ring_emit(ring, |
c4e7a414 | 897 | MI_BATCH_BUFFER_START | (2 << 6) | |
78501eac | 898 | MI_BATCH_NON_SECURE_I965); |
c4e7a414 | 899 | intel_ring_emit(ring, offset); |
78501eac CW |
900 | intel_ring_advance(ring); |
901 | ||
d1b851fc ZN |
902 | return 0; |
903 | } | |
904 | ||
8187a2b7 | 905 | static int |
78501eac | 906 | render_ring_dispatch_execbuffer(struct intel_ring_buffer *ring, |
c4e7a414 | 907 | u32 offset, u32 len) |
62fdfeaf | 908 | { |
78501eac | 909 | struct drm_device *dev = ring->dev; |
c4e7a414 | 910 | int ret; |
62fdfeaf | 911 | |
c4e7a414 CW |
912 | if (IS_I830(dev) || IS_845G(dev)) { |
913 | ret = intel_ring_begin(ring, 4); | |
914 | if (ret) | |
915 | return ret; | |
62fdfeaf | 916 | |
c4e7a414 CW |
917 | intel_ring_emit(ring, MI_BATCH_BUFFER); |
918 | intel_ring_emit(ring, offset | MI_BATCH_NON_SECURE); | |
919 | intel_ring_emit(ring, offset + len - 8); | |
920 | intel_ring_emit(ring, 0); | |
921 | } else { | |
922 | ret = intel_ring_begin(ring, 2); | |
923 | if (ret) | |
924 | return ret; | |
e1f99ce6 | 925 | |
c4e7a414 CW |
926 | if (INTEL_INFO(dev)->gen >= 4) { |
927 | intel_ring_emit(ring, | |
928 | MI_BATCH_BUFFER_START | (2 << 6) | | |
929 | MI_BATCH_NON_SECURE_I965); | |
930 | intel_ring_emit(ring, offset); | |
62fdfeaf | 931 | } else { |
c4e7a414 CW |
932 | intel_ring_emit(ring, |
933 | MI_BATCH_BUFFER_START | (2 << 6)); | |
934 | intel_ring_emit(ring, offset | MI_BATCH_NON_SECURE); | |
62fdfeaf EA |
935 | } |
936 | } | |
c4e7a414 | 937 | intel_ring_advance(ring); |
62fdfeaf | 938 | |
62fdfeaf EA |
939 | return 0; |
940 | } | |
941 | ||
78501eac | 942 | static void cleanup_status_page(struct intel_ring_buffer *ring) |
62fdfeaf | 943 | { |
78501eac | 944 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
05394f39 | 945 | struct drm_i915_gem_object *obj; |
62fdfeaf | 946 | |
8187a2b7 ZN |
947 | obj = ring->status_page.obj; |
948 | if (obj == NULL) | |
62fdfeaf | 949 | return; |
62fdfeaf | 950 | |
05394f39 | 951 | kunmap(obj->pages[0]); |
62fdfeaf | 952 | i915_gem_object_unpin(obj); |
05394f39 | 953 | drm_gem_object_unreference(&obj->base); |
8187a2b7 | 954 | ring->status_page.obj = NULL; |
62fdfeaf EA |
955 | |
956 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); | |
62fdfeaf EA |
957 | } |
958 | ||
78501eac | 959 | static int init_status_page(struct intel_ring_buffer *ring) |
62fdfeaf | 960 | { |
78501eac | 961 | struct drm_device *dev = ring->dev; |
62fdfeaf | 962 | drm_i915_private_t *dev_priv = dev->dev_private; |
05394f39 | 963 | struct drm_i915_gem_object *obj; |
62fdfeaf EA |
964 | int ret; |
965 | ||
62fdfeaf EA |
966 | obj = i915_gem_alloc_object(dev, 4096); |
967 | if (obj == NULL) { | |
968 | DRM_ERROR("Failed to allocate status page\n"); | |
969 | ret = -ENOMEM; | |
970 | goto err; | |
971 | } | |
e4ffd173 CW |
972 | |
973 | i915_gem_object_set_cache_level(obj, I915_CACHE_LLC); | |
62fdfeaf | 974 | |
75e9e915 | 975 | ret = i915_gem_object_pin(obj, 4096, true); |
62fdfeaf | 976 | if (ret != 0) { |
62fdfeaf EA |
977 | goto err_unref; |
978 | } | |
979 | ||
05394f39 CW |
980 | ring->status_page.gfx_addr = obj->gtt_offset; |
981 | ring->status_page.page_addr = kmap(obj->pages[0]); | |
8187a2b7 | 982 | if (ring->status_page.page_addr == NULL) { |
62fdfeaf | 983 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); |
62fdfeaf EA |
984 | goto err_unpin; |
985 | } | |
8187a2b7 ZN |
986 | ring->status_page.obj = obj; |
987 | memset(ring->status_page.page_addr, 0, PAGE_SIZE); | |
62fdfeaf | 988 | |
78501eac | 989 | intel_ring_setup_status_page(ring); |
8187a2b7 ZN |
990 | DRM_DEBUG_DRIVER("%s hws offset: 0x%08x\n", |
991 | ring->name, ring->status_page.gfx_addr); | |
62fdfeaf EA |
992 | |
993 | return 0; | |
994 | ||
995 | err_unpin: | |
996 | i915_gem_object_unpin(obj); | |
997 | err_unref: | |
05394f39 | 998 | drm_gem_object_unreference(&obj->base); |
62fdfeaf | 999 | err: |
8187a2b7 | 1000 | return ret; |
62fdfeaf EA |
1001 | } |
1002 | ||
8187a2b7 | 1003 | int intel_init_ring_buffer(struct drm_device *dev, |
ab6f8e32 | 1004 | struct intel_ring_buffer *ring) |
62fdfeaf | 1005 | { |
05394f39 | 1006 | struct drm_i915_gem_object *obj; |
dd785e35 CW |
1007 | int ret; |
1008 | ||
8187a2b7 | 1009 | ring->dev = dev; |
23bc5982 CW |
1010 | INIT_LIST_HEAD(&ring->active_list); |
1011 | INIT_LIST_HEAD(&ring->request_list); | |
64193406 | 1012 | INIT_LIST_HEAD(&ring->gpu_write_list); |
0dc79fb2 | 1013 | |
b259f673 | 1014 | init_waitqueue_head(&ring->irq_queue); |
0dc79fb2 | 1015 | spin_lock_init(&ring->irq_lock); |
0f46832f | 1016 | ring->irq_mask = ~0; |
62fdfeaf | 1017 | |
8187a2b7 | 1018 | if (I915_NEED_GFX_HWS(dev)) { |
78501eac | 1019 | ret = init_status_page(ring); |
8187a2b7 ZN |
1020 | if (ret) |
1021 | return ret; | |
1022 | } | |
62fdfeaf | 1023 | |
8187a2b7 | 1024 | obj = i915_gem_alloc_object(dev, ring->size); |
62fdfeaf EA |
1025 | if (obj == NULL) { |
1026 | DRM_ERROR("Failed to allocate ringbuffer\n"); | |
8187a2b7 | 1027 | ret = -ENOMEM; |
dd785e35 | 1028 | goto err_hws; |
62fdfeaf | 1029 | } |
62fdfeaf | 1030 | |
05394f39 | 1031 | ring->obj = obj; |
8187a2b7 | 1032 | |
75e9e915 | 1033 | ret = i915_gem_object_pin(obj, PAGE_SIZE, true); |
dd785e35 CW |
1034 | if (ret) |
1035 | goto err_unref; | |
62fdfeaf | 1036 | |
8187a2b7 | 1037 | ring->map.size = ring->size; |
05394f39 | 1038 | ring->map.offset = dev->agp->base + obj->gtt_offset; |
62fdfeaf EA |
1039 | ring->map.type = 0; |
1040 | ring->map.flags = 0; | |
1041 | ring->map.mtrr = 0; | |
1042 | ||
1043 | drm_core_ioremap_wc(&ring->map, dev); | |
1044 | if (ring->map.handle == NULL) { | |
1045 | DRM_ERROR("Failed to map ringbuffer.\n"); | |
8187a2b7 | 1046 | ret = -EINVAL; |
dd785e35 | 1047 | goto err_unpin; |
62fdfeaf EA |
1048 | } |
1049 | ||
8187a2b7 | 1050 | ring->virtual_start = ring->map.handle; |
78501eac | 1051 | ret = ring->init(ring); |
dd785e35 CW |
1052 | if (ret) |
1053 | goto err_unmap; | |
62fdfeaf | 1054 | |
55249baa CW |
1055 | /* Workaround an erratum on the i830 which causes a hang if |
1056 | * the TAIL pointer points to within the last 2 cachelines | |
1057 | * of the buffer. | |
1058 | */ | |
1059 | ring->effective_size = ring->size; | |
1060 | if (IS_I830(ring->dev)) | |
1061 | ring->effective_size -= 128; | |
1062 | ||
c584fe47 | 1063 | return 0; |
dd785e35 CW |
1064 | |
1065 | err_unmap: | |
1066 | drm_core_ioremapfree(&ring->map, dev); | |
1067 | err_unpin: | |
1068 | i915_gem_object_unpin(obj); | |
1069 | err_unref: | |
05394f39 CW |
1070 | drm_gem_object_unreference(&obj->base); |
1071 | ring->obj = NULL; | |
dd785e35 | 1072 | err_hws: |
78501eac | 1073 | cleanup_status_page(ring); |
8187a2b7 | 1074 | return ret; |
62fdfeaf EA |
1075 | } |
1076 | ||
78501eac | 1077 | void intel_cleanup_ring_buffer(struct intel_ring_buffer *ring) |
62fdfeaf | 1078 | { |
33626e6a CW |
1079 | struct drm_i915_private *dev_priv; |
1080 | int ret; | |
1081 | ||
05394f39 | 1082 | if (ring->obj == NULL) |
62fdfeaf EA |
1083 | return; |
1084 | ||
33626e6a CW |
1085 | /* Disable the ring buffer. The ring must be idle at this point */ |
1086 | dev_priv = ring->dev->dev_private; | |
96f298aa | 1087 | ret = intel_wait_ring_idle(ring); |
29ee3991 CW |
1088 | if (ret) |
1089 | DRM_ERROR("failed to quiesce %s whilst cleaning up: %d\n", | |
1090 | ring->name, ret); | |
1091 | ||
33626e6a CW |
1092 | I915_WRITE_CTL(ring, 0); |
1093 | ||
78501eac | 1094 | drm_core_ioremapfree(&ring->map, ring->dev); |
62fdfeaf | 1095 | |
05394f39 CW |
1096 | i915_gem_object_unpin(ring->obj); |
1097 | drm_gem_object_unreference(&ring->obj->base); | |
1098 | ring->obj = NULL; | |
78501eac | 1099 | |
8d19215b ZN |
1100 | if (ring->cleanup) |
1101 | ring->cleanup(ring); | |
1102 | ||
78501eac | 1103 | cleanup_status_page(ring); |
62fdfeaf EA |
1104 | } |
1105 | ||
78501eac | 1106 | static int intel_wrap_ring_buffer(struct intel_ring_buffer *ring) |
62fdfeaf | 1107 | { |
8187a2b7 | 1108 | unsigned int *virt; |
55249baa | 1109 | int rem = ring->size - ring->tail; |
62fdfeaf | 1110 | |
8187a2b7 | 1111 | if (ring->space < rem) { |
78501eac | 1112 | int ret = intel_wait_ring_buffer(ring, rem); |
62fdfeaf EA |
1113 | if (ret) |
1114 | return ret; | |
1115 | } | |
62fdfeaf | 1116 | |
8187a2b7 | 1117 | virt = (unsigned int *)(ring->virtual_start + ring->tail); |
1741dd4a CW |
1118 | rem /= 8; |
1119 | while (rem--) { | |
62fdfeaf | 1120 | *virt++ = MI_NOOP; |
1741dd4a CW |
1121 | *virt++ = MI_NOOP; |
1122 | } | |
62fdfeaf | 1123 | |
8187a2b7 | 1124 | ring->tail = 0; |
c7dca47b | 1125 | ring->space = ring_space(ring); |
62fdfeaf EA |
1126 | |
1127 | return 0; | |
1128 | } | |
1129 | ||
78501eac | 1130 | int intel_wait_ring_buffer(struct intel_ring_buffer *ring, int n) |
62fdfeaf | 1131 | { |
78501eac | 1132 | struct drm_device *dev = ring->dev; |
cae5852d | 1133 | struct drm_i915_private *dev_priv = dev->dev_private; |
78501eac | 1134 | unsigned long end; |
6aa56062 CW |
1135 | u32 head; |
1136 | ||
c7dca47b CW |
1137 | /* If the reported head position has wrapped or hasn't advanced, |
1138 | * fallback to the slow and accurate path. | |
1139 | */ | |
1140 | head = intel_read_status_page(ring, 4); | |
1141 | if (head > ring->head) { | |
1142 | ring->head = head; | |
1143 | ring->space = ring_space(ring); | |
1144 | if (ring->space >= n) | |
1145 | return 0; | |
1146 | } | |
1147 | ||
db53a302 | 1148 | trace_i915_ring_wait_begin(ring); |
e6bfaf85 DV |
1149 | if (drm_core_check_feature(dev, DRIVER_GEM)) |
1150 | /* With GEM the hangcheck timer should kick us out of the loop, | |
1151 | * leaving it early runs the risk of corrupting GEM state (due | |
1152 | * to running on almost untested codepaths). But on resume | |
1153 | * timers don't work yet, so prevent a complete hang in that | |
1154 | * case by choosing an insanely large timeout. */ | |
1155 | end = jiffies + 60 * HZ; | |
1156 | else | |
1157 | end = jiffies + 3 * HZ; | |
1158 | ||
8187a2b7 | 1159 | do { |
c7dca47b CW |
1160 | ring->head = I915_READ_HEAD(ring); |
1161 | ring->space = ring_space(ring); | |
62fdfeaf | 1162 | if (ring->space >= n) { |
db53a302 | 1163 | trace_i915_ring_wait_end(ring); |
62fdfeaf EA |
1164 | return 0; |
1165 | } | |
1166 | ||
1167 | if (dev->primary->master) { | |
1168 | struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; | |
1169 | if (master_priv->sarea_priv) | |
1170 | master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; | |
1171 | } | |
d1b851fc | 1172 | |
e60a0b10 | 1173 | msleep(1); |
f4e0b29b CW |
1174 | if (atomic_read(&dev_priv->mm.wedged)) |
1175 | return -EAGAIN; | |
8187a2b7 | 1176 | } while (!time_after(jiffies, end)); |
db53a302 | 1177 | trace_i915_ring_wait_end(ring); |
8187a2b7 ZN |
1178 | return -EBUSY; |
1179 | } | |
62fdfeaf | 1180 | |
e1f99ce6 CW |
1181 | int intel_ring_begin(struct intel_ring_buffer *ring, |
1182 | int num_dwords) | |
8187a2b7 | 1183 | { |
21dd3734 | 1184 | struct drm_i915_private *dev_priv = ring->dev->dev_private; |
be26a10b | 1185 | int n = 4*num_dwords; |
e1f99ce6 | 1186 | int ret; |
78501eac | 1187 | |
21dd3734 CW |
1188 | if (unlikely(atomic_read(&dev_priv->mm.wedged))) |
1189 | return -EIO; | |
1190 | ||
55249baa | 1191 | if (unlikely(ring->tail + n > ring->effective_size)) { |
e1f99ce6 CW |
1192 | ret = intel_wrap_ring_buffer(ring); |
1193 | if (unlikely(ret)) | |
1194 | return ret; | |
1195 | } | |
78501eac | 1196 | |
e1f99ce6 CW |
1197 | if (unlikely(ring->space < n)) { |
1198 | ret = intel_wait_ring_buffer(ring, n); | |
1199 | if (unlikely(ret)) | |
1200 | return ret; | |
1201 | } | |
d97ed339 CW |
1202 | |
1203 | ring->space -= n; | |
e1f99ce6 | 1204 | return 0; |
8187a2b7 | 1205 | } |
62fdfeaf | 1206 | |
78501eac | 1207 | void intel_ring_advance(struct intel_ring_buffer *ring) |
8187a2b7 | 1208 | { |
d97ed339 | 1209 | ring->tail &= ring->size - 1; |
78501eac | 1210 | ring->write_tail(ring, ring->tail); |
8187a2b7 | 1211 | } |
62fdfeaf | 1212 | |
e070868e | 1213 | static const struct intel_ring_buffer render_ring = { |
8187a2b7 | 1214 | .name = "render ring", |
9220434a | 1215 | .id = RING_RENDER, |
333e9fe9 | 1216 | .mmio_base = RENDER_RING_BASE, |
8187a2b7 | 1217 | .size = 32 * PAGE_SIZE, |
8187a2b7 | 1218 | .init = init_render_ring, |
297b0c5b | 1219 | .write_tail = ring_write_tail, |
8187a2b7 ZN |
1220 | .flush = render_ring_flush, |
1221 | .add_request = render_ring_add_request, | |
1ec14ad3 CW |
1222 | .get_seqno = ring_get_seqno, |
1223 | .irq_get = render_ring_get_irq, | |
1224 | .irq_put = render_ring_put_irq, | |
78501eac | 1225 | .dispatch_execbuffer = render_ring_dispatch_execbuffer, |
0206e353 | 1226 | .cleanup = render_ring_cleanup, |
c8c99b0f BW |
1227 | .sync_to = render_ring_sync_to, |
1228 | .semaphore_register = {MI_SEMAPHORE_SYNC_INVALID, | |
1229 | MI_SEMAPHORE_SYNC_RV, | |
1230 | MI_SEMAPHORE_SYNC_RB}, | |
1231 | .signal_mbox = {GEN6_VRSYNC, GEN6_BRSYNC}, | |
8187a2b7 | 1232 | }; |
d1b851fc ZN |
1233 | |
1234 | /* ring buffer for bit-stream decoder */ | |
1235 | ||
e070868e | 1236 | static const struct intel_ring_buffer bsd_ring = { |
d1b851fc | 1237 | .name = "bsd ring", |
9220434a | 1238 | .id = RING_BSD, |
333e9fe9 | 1239 | .mmio_base = BSD_RING_BASE, |
d1b851fc | 1240 | .size = 32 * PAGE_SIZE, |
78501eac | 1241 | .init = init_ring_common, |
297b0c5b | 1242 | .write_tail = ring_write_tail, |
d1b851fc | 1243 | .flush = bsd_ring_flush, |
549f7365 | 1244 | .add_request = ring_add_request, |
1ec14ad3 CW |
1245 | .get_seqno = ring_get_seqno, |
1246 | .irq_get = bsd_ring_get_irq, | |
1247 | .irq_put = bsd_ring_put_irq, | |
78501eac | 1248 | .dispatch_execbuffer = ring_dispatch_execbuffer, |
d1b851fc | 1249 | }; |
5c1143bb | 1250 | |
881f47b6 | 1251 | |
78501eac | 1252 | static void gen6_bsd_ring_write_tail(struct intel_ring_buffer *ring, |
297b0c5b | 1253 | u32 value) |
881f47b6 | 1254 | { |
0206e353 | 1255 | drm_i915_private_t *dev_priv = ring->dev->dev_private; |
881f47b6 XH |
1256 | |
1257 | /* Every tail move must follow the sequence below */ | |
0206e353 AJ |
1258 | I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, |
1259 | GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_MODIFY_MASK | | |
1260 | GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_DISABLE); | |
1261 | I915_WRITE(GEN6_BSD_RNCID, 0x0); | |
1262 | ||
1263 | if (wait_for((I915_READ(GEN6_BSD_SLEEP_PSMI_CONTROL) & | |
1264 | GEN6_BSD_SLEEP_PSMI_CONTROL_IDLE_INDICATOR) == 0, | |
1265 | 50)) | |
1266 | DRM_ERROR("timed out waiting for IDLE Indicator\n"); | |
1267 | ||
1268 | I915_WRITE_TAIL(ring, value); | |
1269 | I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, | |
1270 | GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_MODIFY_MASK | | |
1271 | GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_ENABLE); | |
881f47b6 XH |
1272 | } |
1273 | ||
b72f3acb | 1274 | static int gen6_ring_flush(struct intel_ring_buffer *ring, |
71a77e07 | 1275 | u32 invalidate, u32 flush) |
881f47b6 | 1276 | { |
71a77e07 | 1277 | uint32_t cmd; |
b72f3acb CW |
1278 | int ret; |
1279 | ||
b72f3acb CW |
1280 | ret = intel_ring_begin(ring, 4); |
1281 | if (ret) | |
1282 | return ret; | |
1283 | ||
71a77e07 CW |
1284 | cmd = MI_FLUSH_DW; |
1285 | if (invalidate & I915_GEM_GPU_DOMAINS) | |
1286 | cmd |= MI_INVALIDATE_TLB | MI_INVALIDATE_BSD; | |
1287 | intel_ring_emit(ring, cmd); | |
b72f3acb CW |
1288 | intel_ring_emit(ring, 0); |
1289 | intel_ring_emit(ring, 0); | |
71a77e07 | 1290 | intel_ring_emit(ring, MI_NOOP); |
b72f3acb CW |
1291 | intel_ring_advance(ring); |
1292 | return 0; | |
881f47b6 XH |
1293 | } |
1294 | ||
1295 | static int | |
78501eac | 1296 | gen6_ring_dispatch_execbuffer(struct intel_ring_buffer *ring, |
c4e7a414 | 1297 | u32 offset, u32 len) |
881f47b6 | 1298 | { |
0206e353 | 1299 | int ret; |
ab6f8e32 | 1300 | |
0206e353 AJ |
1301 | ret = intel_ring_begin(ring, 2); |
1302 | if (ret) | |
1303 | return ret; | |
e1f99ce6 | 1304 | |
0206e353 AJ |
1305 | intel_ring_emit(ring, MI_BATCH_BUFFER_START | MI_BATCH_NON_SECURE_I965); |
1306 | /* bit0-7 is the length on GEN6+ */ | |
1307 | intel_ring_emit(ring, offset); | |
1308 | intel_ring_advance(ring); | |
ab6f8e32 | 1309 | |
0206e353 | 1310 | return 0; |
881f47b6 XH |
1311 | } |
1312 | ||
0f46832f CW |
1313 | static bool |
1314 | gen6_render_ring_get_irq(struct intel_ring_buffer *ring) | |
1315 | { | |
1316 | return gen6_ring_get_irq(ring, | |
1317 | GT_USER_INTERRUPT, | |
1318 | GEN6_RENDER_USER_INTERRUPT); | |
1319 | } | |
1320 | ||
1321 | static void | |
1322 | gen6_render_ring_put_irq(struct intel_ring_buffer *ring) | |
1323 | { | |
1324 | return gen6_ring_put_irq(ring, | |
1325 | GT_USER_INTERRUPT, | |
1326 | GEN6_RENDER_USER_INTERRUPT); | |
1327 | } | |
1328 | ||
b13c2b96 | 1329 | static bool |
1ec14ad3 CW |
1330 | gen6_bsd_ring_get_irq(struct intel_ring_buffer *ring) |
1331 | { | |
0f46832f CW |
1332 | return gen6_ring_get_irq(ring, |
1333 | GT_GEN6_BSD_USER_INTERRUPT, | |
1334 | GEN6_BSD_USER_INTERRUPT); | |
1ec14ad3 CW |
1335 | } |
1336 | ||
1337 | static void | |
1338 | gen6_bsd_ring_put_irq(struct intel_ring_buffer *ring) | |
1339 | { | |
0f46832f CW |
1340 | return gen6_ring_put_irq(ring, |
1341 | GT_GEN6_BSD_USER_INTERRUPT, | |
1342 | GEN6_BSD_USER_INTERRUPT); | |
1ec14ad3 CW |
1343 | } |
1344 | ||
881f47b6 | 1345 | /* ring buffer for Video Codec for Gen6+ */ |
e070868e | 1346 | static const struct intel_ring_buffer gen6_bsd_ring = { |
1ec14ad3 CW |
1347 | .name = "gen6 bsd ring", |
1348 | .id = RING_BSD, | |
1349 | .mmio_base = GEN6_BSD_RING_BASE, | |
1350 | .size = 32 * PAGE_SIZE, | |
1351 | .init = init_ring_common, | |
1352 | .write_tail = gen6_bsd_ring_write_tail, | |
1353 | .flush = gen6_ring_flush, | |
1354 | .add_request = gen6_add_request, | |
4cd53c0c | 1355 | .get_seqno = gen6_ring_get_seqno, |
1ec14ad3 CW |
1356 | .irq_get = gen6_bsd_ring_get_irq, |
1357 | .irq_put = gen6_bsd_ring_put_irq, | |
1358 | .dispatch_execbuffer = gen6_ring_dispatch_execbuffer, | |
c8c99b0f BW |
1359 | .sync_to = gen6_bsd_ring_sync_to, |
1360 | .semaphore_register = {MI_SEMAPHORE_SYNC_VR, | |
1361 | MI_SEMAPHORE_SYNC_INVALID, | |
1362 | MI_SEMAPHORE_SYNC_VB}, | |
1363 | .signal_mbox = {GEN6_RVSYNC, GEN6_BVSYNC}, | |
549f7365 CW |
1364 | }; |
1365 | ||
1366 | /* Blitter support (SandyBridge+) */ | |
1367 | ||
b13c2b96 | 1368 | static bool |
1ec14ad3 | 1369 | blt_ring_get_irq(struct intel_ring_buffer *ring) |
549f7365 | 1370 | { |
0f46832f CW |
1371 | return gen6_ring_get_irq(ring, |
1372 | GT_BLT_USER_INTERRUPT, | |
1373 | GEN6_BLITTER_USER_INTERRUPT); | |
549f7365 | 1374 | } |
1ec14ad3 | 1375 | |
549f7365 | 1376 | static void |
1ec14ad3 | 1377 | blt_ring_put_irq(struct intel_ring_buffer *ring) |
549f7365 | 1378 | { |
0f46832f CW |
1379 | gen6_ring_put_irq(ring, |
1380 | GT_BLT_USER_INTERRUPT, | |
1381 | GEN6_BLITTER_USER_INTERRUPT); | |
549f7365 CW |
1382 | } |
1383 | ||
8d19215b ZN |
1384 | |
1385 | /* Workaround for some stepping of SNB, | |
1386 | * each time when BLT engine ring tail moved, | |
1387 | * the first command in the ring to be parsed | |
1388 | * should be MI_BATCH_BUFFER_START | |
1389 | */ | |
1390 | #define NEED_BLT_WORKAROUND(dev) \ | |
1391 | (IS_GEN6(dev) && (dev->pdev->revision < 8)) | |
1392 | ||
1393 | static inline struct drm_i915_gem_object * | |
1394 | to_blt_workaround(struct intel_ring_buffer *ring) | |
1395 | { | |
1396 | return ring->private; | |
1397 | } | |
1398 | ||
1399 | static int blt_ring_init(struct intel_ring_buffer *ring) | |
1400 | { | |
1401 | if (NEED_BLT_WORKAROUND(ring->dev)) { | |
1402 | struct drm_i915_gem_object *obj; | |
27153f72 | 1403 | u32 *ptr; |
8d19215b ZN |
1404 | int ret; |
1405 | ||
05394f39 | 1406 | obj = i915_gem_alloc_object(ring->dev, 4096); |
8d19215b ZN |
1407 | if (obj == NULL) |
1408 | return -ENOMEM; | |
1409 | ||
05394f39 | 1410 | ret = i915_gem_object_pin(obj, 4096, true); |
8d19215b ZN |
1411 | if (ret) { |
1412 | drm_gem_object_unreference(&obj->base); | |
1413 | return ret; | |
1414 | } | |
1415 | ||
1416 | ptr = kmap(obj->pages[0]); | |
27153f72 CW |
1417 | *ptr++ = MI_BATCH_BUFFER_END; |
1418 | *ptr++ = MI_NOOP; | |
8d19215b ZN |
1419 | kunmap(obj->pages[0]); |
1420 | ||
05394f39 | 1421 | ret = i915_gem_object_set_to_gtt_domain(obj, false); |
8d19215b | 1422 | if (ret) { |
05394f39 | 1423 | i915_gem_object_unpin(obj); |
8d19215b ZN |
1424 | drm_gem_object_unreference(&obj->base); |
1425 | return ret; | |
1426 | } | |
1427 | ||
1428 | ring->private = obj; | |
1429 | } | |
1430 | ||
1431 | return init_ring_common(ring); | |
1432 | } | |
1433 | ||
1434 | static int blt_ring_begin(struct intel_ring_buffer *ring, | |
1435 | int num_dwords) | |
1436 | { | |
1437 | if (ring->private) { | |
1438 | int ret = intel_ring_begin(ring, num_dwords+2); | |
1439 | if (ret) | |
1440 | return ret; | |
1441 | ||
1442 | intel_ring_emit(ring, MI_BATCH_BUFFER_START); | |
1443 | intel_ring_emit(ring, to_blt_workaround(ring)->gtt_offset); | |
1444 | ||
1445 | return 0; | |
1446 | } else | |
1447 | return intel_ring_begin(ring, 4); | |
1448 | } | |
1449 | ||
b72f3acb | 1450 | static int blt_ring_flush(struct intel_ring_buffer *ring, |
71a77e07 | 1451 | u32 invalidate, u32 flush) |
8d19215b | 1452 | { |
71a77e07 | 1453 | uint32_t cmd; |
b72f3acb CW |
1454 | int ret; |
1455 | ||
b72f3acb CW |
1456 | ret = blt_ring_begin(ring, 4); |
1457 | if (ret) | |
1458 | return ret; | |
1459 | ||
71a77e07 CW |
1460 | cmd = MI_FLUSH_DW; |
1461 | if (invalidate & I915_GEM_DOMAIN_RENDER) | |
1462 | cmd |= MI_INVALIDATE_TLB; | |
1463 | intel_ring_emit(ring, cmd); | |
b72f3acb CW |
1464 | intel_ring_emit(ring, 0); |
1465 | intel_ring_emit(ring, 0); | |
71a77e07 | 1466 | intel_ring_emit(ring, MI_NOOP); |
b72f3acb CW |
1467 | intel_ring_advance(ring); |
1468 | return 0; | |
8d19215b ZN |
1469 | } |
1470 | ||
8d19215b ZN |
1471 | static void blt_ring_cleanup(struct intel_ring_buffer *ring) |
1472 | { | |
1473 | if (!ring->private) | |
1474 | return; | |
1475 | ||
1476 | i915_gem_object_unpin(ring->private); | |
1477 | drm_gem_object_unreference(ring->private); | |
1478 | ring->private = NULL; | |
1479 | } | |
1480 | ||
549f7365 | 1481 | static const struct intel_ring_buffer gen6_blt_ring = { |
0206e353 AJ |
1482 | .name = "blt ring", |
1483 | .id = RING_BLT, | |
1484 | .mmio_base = BLT_RING_BASE, | |
1485 | .size = 32 * PAGE_SIZE, | |
1486 | .init = blt_ring_init, | |
1487 | .write_tail = ring_write_tail, | |
1488 | .flush = blt_ring_flush, | |
1489 | .add_request = gen6_add_request, | |
4cd53c0c | 1490 | .get_seqno = gen6_ring_get_seqno, |
c8c99b0f BW |
1491 | .irq_get = blt_ring_get_irq, |
1492 | .irq_put = blt_ring_put_irq, | |
0206e353 | 1493 | .dispatch_execbuffer = gen6_ring_dispatch_execbuffer, |
c8c99b0f BW |
1494 | .cleanup = blt_ring_cleanup, |
1495 | .sync_to = gen6_blt_ring_sync_to, | |
1496 | .semaphore_register = {MI_SEMAPHORE_SYNC_BR, | |
1497 | MI_SEMAPHORE_SYNC_BV, | |
1498 | MI_SEMAPHORE_SYNC_INVALID}, | |
1499 | .signal_mbox = {GEN6_RBSYNC, GEN6_VBSYNC}, | |
881f47b6 XH |
1500 | }; |
1501 | ||
5c1143bb XH |
1502 | int intel_init_render_ring_buffer(struct drm_device *dev) |
1503 | { | |
1504 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1ec14ad3 | 1505 | struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; |
5c1143bb | 1506 | |
1ec14ad3 CW |
1507 | *ring = render_ring; |
1508 | if (INTEL_INFO(dev)->gen >= 6) { | |
1509 | ring->add_request = gen6_add_request; | |
8d315287 | 1510 | ring->flush = gen6_render_ring_flush; |
0f46832f CW |
1511 | ring->irq_get = gen6_render_ring_get_irq; |
1512 | ring->irq_put = gen6_render_ring_put_irq; | |
4cd53c0c | 1513 | ring->get_seqno = gen6_ring_get_seqno; |
c6df541c CW |
1514 | } else if (IS_GEN5(dev)) { |
1515 | ring->add_request = pc_render_add_request; | |
1516 | ring->get_seqno = pc_render_get_seqno; | |
1ec14ad3 | 1517 | } |
5c1143bb XH |
1518 | |
1519 | if (!I915_NEED_GFX_HWS(dev)) { | |
1ec14ad3 CW |
1520 | ring->status_page.page_addr = dev_priv->status_page_dmah->vaddr; |
1521 | memset(ring->status_page.page_addr, 0, PAGE_SIZE); | |
5c1143bb XH |
1522 | } |
1523 | ||
1ec14ad3 | 1524 | return intel_init_ring_buffer(dev, ring); |
5c1143bb XH |
1525 | } |
1526 | ||
e8616b6c CW |
1527 | int intel_render_ring_init_dri(struct drm_device *dev, u64 start, u32 size) |
1528 | { | |
1529 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1530 | struct intel_ring_buffer *ring = &dev_priv->ring[RCS]; | |
1531 | ||
1532 | *ring = render_ring; | |
1533 | if (INTEL_INFO(dev)->gen >= 6) { | |
1534 | ring->add_request = gen6_add_request; | |
1535 | ring->irq_get = gen6_render_ring_get_irq; | |
1536 | ring->irq_put = gen6_render_ring_put_irq; | |
1537 | } else if (IS_GEN5(dev)) { | |
1538 | ring->add_request = pc_render_add_request; | |
1539 | ring->get_seqno = pc_render_get_seqno; | |
1540 | } | |
1541 | ||
f3234706 KP |
1542 | if (!I915_NEED_GFX_HWS(dev)) |
1543 | ring->status_page.page_addr = dev_priv->status_page_dmah->vaddr; | |
1544 | ||
e8616b6c CW |
1545 | ring->dev = dev; |
1546 | INIT_LIST_HEAD(&ring->active_list); | |
1547 | INIT_LIST_HEAD(&ring->request_list); | |
1548 | INIT_LIST_HEAD(&ring->gpu_write_list); | |
1549 | ||
1550 | ring->size = size; | |
1551 | ring->effective_size = ring->size; | |
1552 | if (IS_I830(ring->dev)) | |
1553 | ring->effective_size -= 128; | |
1554 | ||
1555 | ring->map.offset = start; | |
1556 | ring->map.size = size; | |
1557 | ring->map.type = 0; | |
1558 | ring->map.flags = 0; | |
1559 | ring->map.mtrr = 0; | |
1560 | ||
1561 | drm_core_ioremap_wc(&ring->map, dev); | |
1562 | if (ring->map.handle == NULL) { | |
1563 | DRM_ERROR("can not ioremap virtual address for" | |
1564 | " ring buffer\n"); | |
1565 | return -ENOMEM; | |
1566 | } | |
1567 | ||
1568 | ring->virtual_start = (void __force __iomem *)ring->map.handle; | |
1569 | return 0; | |
1570 | } | |
1571 | ||
5c1143bb XH |
1572 | int intel_init_bsd_ring_buffer(struct drm_device *dev) |
1573 | { | |
1574 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1ec14ad3 | 1575 | struct intel_ring_buffer *ring = &dev_priv->ring[VCS]; |
5c1143bb | 1576 | |
65d3eb1e | 1577 | if (IS_GEN6(dev) || IS_GEN7(dev)) |
1ec14ad3 | 1578 | *ring = gen6_bsd_ring; |
881f47b6 | 1579 | else |
1ec14ad3 | 1580 | *ring = bsd_ring; |
5c1143bb | 1581 | |
1ec14ad3 | 1582 | return intel_init_ring_buffer(dev, ring); |
5c1143bb | 1583 | } |
549f7365 CW |
1584 | |
1585 | int intel_init_blt_ring_buffer(struct drm_device *dev) | |
1586 | { | |
1587 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1ec14ad3 | 1588 | struct intel_ring_buffer *ring = &dev_priv->ring[BCS]; |
549f7365 | 1589 | |
1ec14ad3 | 1590 | *ring = gen6_blt_ring; |
549f7365 | 1591 | |
1ec14ad3 | 1592 | return intel_init_ring_buffer(dev, ring); |
549f7365 | 1593 | } |