]>
Commit | Line | Data |
---|---|---|
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" | |
32 | #include "i915_drv.h" | |
33 | #include "i915_drm.h" | |
34 | #include "i915_trace.h" | |
35 | #include "intel_drv.h" | |
36 | ||
37 | static u32 i915_gem_get_seqno(struct drm_device *dev) | |
38 | { | |
39 | drm_i915_private_t *dev_priv = dev->dev_private; | |
40 | u32 seqno; | |
41 | ||
42 | seqno = dev_priv->next_seqno; | |
43 | ||
44 | /* reserve 0 for non-seqno */ | |
45 | if (++dev_priv->next_seqno == 0) | |
46 | dev_priv->next_seqno = 1; | |
47 | ||
48 | return seqno; | |
49 | } | |
50 | ||
51 | static void | |
52 | render_ring_flush(struct drm_device *dev, | |
53 | struct intel_ring_buffer *ring, | |
54 | u32 invalidate_domains, | |
55 | u32 flush_domains) | |
56 | { | |
57 | drm_i915_private_t *dev_priv = dev->dev_private; | |
58 | u32 cmd; | |
59 | ||
60 | #if WATCH_EXEC | |
61 | DRM_INFO("%s: invalidate %08x flush %08x\n", __func__, | |
62 | invalidate_domains, flush_domains); | |
63 | #endif | |
64 | ||
65 | trace_i915_gem_request_flush(dev, dev_priv->next_seqno, | |
66 | invalidate_domains, flush_domains); | |
67 | ||
68 | if ((invalidate_domains | flush_domains) & I915_GEM_GPU_DOMAINS) { | |
69 | /* | |
70 | * read/write caches: | |
71 | * | |
72 | * I915_GEM_DOMAIN_RENDER is always invalidated, but is | |
73 | * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is | |
74 | * also flushed at 2d versus 3d pipeline switches. | |
75 | * | |
76 | * read-only caches: | |
77 | * | |
78 | * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if | |
79 | * MI_READ_FLUSH is set, and is always flushed on 965. | |
80 | * | |
81 | * I915_GEM_DOMAIN_COMMAND may not exist? | |
82 | * | |
83 | * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is | |
84 | * invalidated when MI_EXE_FLUSH is set. | |
85 | * | |
86 | * I915_GEM_DOMAIN_VERTEX, which exists on 965, is | |
87 | * invalidated with every MI_FLUSH. | |
88 | * | |
89 | * TLBs: | |
90 | * | |
91 | * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND | |
92 | * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and | |
93 | * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER | |
94 | * are flushed at any MI_FLUSH. | |
95 | */ | |
96 | ||
97 | cmd = MI_FLUSH | MI_NO_WRITE_FLUSH; | |
98 | if ((invalidate_domains|flush_domains) & | |
99 | I915_GEM_DOMAIN_RENDER) | |
100 | cmd &= ~MI_NO_WRITE_FLUSH; | |
101 | if (INTEL_INFO(dev)->gen < 4) { | |
102 | /* | |
103 | * On the 965, the sampler cache always gets flushed | |
104 | * and this bit is reserved. | |
105 | */ | |
106 | if (invalidate_domains & I915_GEM_DOMAIN_SAMPLER) | |
107 | cmd |= MI_READ_FLUSH; | |
108 | } | |
109 | if (invalidate_domains & I915_GEM_DOMAIN_INSTRUCTION) | |
110 | cmd |= MI_EXE_FLUSH; | |
111 | ||
112 | #if WATCH_EXEC | |
113 | DRM_INFO("%s: queue flush %08x to ring\n", __func__, cmd); | |
114 | #endif | |
115 | intel_ring_begin(dev, ring, 2); | |
116 | intel_ring_emit(dev, ring, cmd); | |
117 | intel_ring_emit(dev, ring, MI_NOOP); | |
118 | intel_ring_advance(dev, ring); | |
119 | } | |
120 | } | |
121 | ||
122 | static unsigned int render_ring_get_head(struct drm_device *dev, | |
123 | struct intel_ring_buffer *ring) | |
124 | { | |
125 | drm_i915_private_t *dev_priv = dev->dev_private; | |
126 | return I915_READ(PRB0_HEAD) & HEAD_ADDR; | |
127 | } | |
128 | ||
129 | static unsigned int render_ring_get_tail(struct drm_device *dev, | |
130 | struct intel_ring_buffer *ring) | |
131 | { | |
132 | drm_i915_private_t *dev_priv = dev->dev_private; | |
133 | return I915_READ(PRB0_TAIL) & TAIL_ADDR; | |
134 | } | |
135 | ||
136 | static inline void render_ring_set_tail(struct drm_device *dev, u32 value) | |
137 | { | |
138 | drm_i915_private_t *dev_priv = dev->dev_private; | |
139 | I915_WRITE(PRB0_TAIL, value); | |
140 | } | |
141 | ||
142 | static unsigned int render_ring_get_active_head(struct drm_device *dev, | |
143 | struct intel_ring_buffer *ring) | |
144 | { | |
145 | drm_i915_private_t *dev_priv = dev->dev_private; | |
146 | u32 acthd_reg = INTEL_INFO(dev)->gen ? ACTHD_I965 : ACTHD; | |
147 | ||
148 | return I915_READ(acthd_reg); | |
149 | } | |
150 | ||
151 | static int init_ring_common(struct drm_device *dev, | |
152 | struct intel_ring_buffer *ring) | |
153 | { | |
154 | u32 head; | |
155 | drm_i915_private_t *dev_priv = dev->dev_private; | |
156 | struct drm_i915_gem_object *obj_priv; | |
157 | obj_priv = to_intel_bo(ring->gem_object); | |
158 | ||
159 | /* Stop the ring if it's running. */ | |
160 | I915_WRITE(ring->regs.ctl, 0); | |
161 | I915_WRITE(ring->regs.head, 0); | |
162 | ring->set_tail(dev, 0); | |
163 | ||
164 | /* Initialize the ring. */ | |
165 | I915_WRITE(ring->regs.start, obj_priv->gtt_offset); | |
166 | head = ring->get_head(dev, ring); | |
167 | ||
168 | /* G45 ring initialization fails to reset head to zero */ | |
169 | if (head != 0) { | |
170 | DRM_ERROR("%s head not reset to zero " | |
171 | "ctl %08x head %08x tail %08x start %08x\n", | |
172 | ring->name, | |
173 | I915_READ(ring->regs.ctl), | |
174 | I915_READ(ring->regs.head), | |
175 | I915_READ(ring->regs.tail), | |
176 | I915_READ(ring->regs.start)); | |
177 | ||
178 | I915_WRITE(ring->regs.head, 0); | |
179 | ||
180 | DRM_ERROR("%s head forced to zero " | |
181 | "ctl %08x head %08x tail %08x start %08x\n", | |
182 | ring->name, | |
183 | I915_READ(ring->regs.ctl), | |
184 | I915_READ(ring->regs.head), | |
185 | I915_READ(ring->regs.tail), | |
186 | I915_READ(ring->regs.start)); | |
187 | } | |
188 | ||
189 | I915_WRITE(ring->regs.ctl, | |
190 | ((ring->gem_object->size - PAGE_SIZE) & RING_NR_PAGES) | |
191 | | RING_NO_REPORT | RING_VALID); | |
192 | ||
193 | head = I915_READ(ring->regs.head) & HEAD_ADDR; | |
194 | /* If the head is still not zero, the ring is dead */ | |
195 | if (head != 0) { | |
196 | DRM_ERROR("%s initialization failed " | |
197 | "ctl %08x head %08x tail %08x start %08x\n", | |
198 | ring->name, | |
199 | I915_READ(ring->regs.ctl), | |
200 | I915_READ(ring->regs.head), | |
201 | I915_READ(ring->regs.tail), | |
202 | I915_READ(ring->regs.start)); | |
203 | return -EIO; | |
204 | } | |
205 | ||
206 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
207 | i915_kernel_lost_context(dev); | |
208 | else { | |
209 | ring->head = ring->get_head(dev, ring); | |
210 | ring->tail = ring->get_tail(dev, ring); | |
211 | ring->space = ring->head - (ring->tail + 8); | |
212 | if (ring->space < 0) | |
213 | ring->space += ring->size; | |
214 | } | |
215 | return 0; | |
216 | } | |
217 | ||
218 | static int init_render_ring(struct drm_device *dev, | |
219 | struct intel_ring_buffer *ring) | |
220 | { | |
221 | drm_i915_private_t *dev_priv = dev->dev_private; | |
222 | int ret = init_ring_common(dev, ring); | |
223 | int mode; | |
224 | ||
225 | if (INTEL_INFO(dev)->gen > 3) { | |
226 | mode = VS_TIMER_DISPATCH << 16 | VS_TIMER_DISPATCH; | |
227 | if (IS_GEN6(dev)) | |
228 | mode |= MI_FLUSH_ENABLE << 16 | MI_FLUSH_ENABLE; | |
229 | I915_WRITE(MI_MODE, mode); | |
230 | } | |
231 | return ret; | |
232 | } | |
233 | ||
234 | #define PIPE_CONTROL_FLUSH(addr) \ | |
235 | do { \ | |
236 | OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | \ | |
237 | PIPE_CONTROL_DEPTH_STALL | 2); \ | |
238 | OUT_RING(addr | PIPE_CONTROL_GLOBAL_GTT); \ | |
239 | OUT_RING(0); \ | |
240 | OUT_RING(0); \ | |
241 | } while (0) | |
242 | ||
243 | /** | |
244 | * Creates a new sequence number, emitting a write of it to the status page | |
245 | * plus an interrupt, which will trigger i915_user_interrupt_handler. | |
246 | * | |
247 | * Must be called with struct_lock held. | |
248 | * | |
249 | * Returned sequence numbers are nonzero on success. | |
250 | */ | |
251 | static u32 | |
252 | render_ring_add_request(struct drm_device *dev, | |
253 | struct intel_ring_buffer *ring, | |
254 | struct drm_file *file_priv, | |
255 | u32 flush_domains) | |
256 | { | |
257 | drm_i915_private_t *dev_priv = dev->dev_private; | |
258 | u32 seqno; | |
259 | ||
260 | seqno = i915_gem_get_seqno(dev); | |
261 | ||
262 | if (IS_GEN6(dev)) { | |
263 | BEGIN_LP_RING(6); | |
264 | OUT_RING(GFX_OP_PIPE_CONTROL | 3); | |
265 | OUT_RING(PIPE_CONTROL_QW_WRITE | | |
266 | PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_IS_FLUSH | | |
267 | PIPE_CONTROL_NOTIFY); | |
268 | OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT); | |
269 | OUT_RING(seqno); | |
270 | OUT_RING(0); | |
271 | OUT_RING(0); | |
272 | ADVANCE_LP_RING(); | |
273 | } else if (HAS_PIPE_CONTROL(dev)) { | |
274 | u32 scratch_addr = dev_priv->seqno_gfx_addr + 128; | |
275 | ||
276 | /* | |
277 | * Workaround qword write incoherence by flushing the | |
278 | * PIPE_NOTIFY buffers out to memory before requesting | |
279 | * an interrupt. | |
280 | */ | |
281 | BEGIN_LP_RING(32); | |
282 | OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | | |
283 | PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_TC_FLUSH); | |
284 | OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT); | |
285 | OUT_RING(seqno); | |
286 | OUT_RING(0); | |
287 | PIPE_CONTROL_FLUSH(scratch_addr); | |
288 | scratch_addr += 128; /* write to separate cachelines */ | |
289 | PIPE_CONTROL_FLUSH(scratch_addr); | |
290 | scratch_addr += 128; | |
291 | PIPE_CONTROL_FLUSH(scratch_addr); | |
292 | scratch_addr += 128; | |
293 | PIPE_CONTROL_FLUSH(scratch_addr); | |
294 | scratch_addr += 128; | |
295 | PIPE_CONTROL_FLUSH(scratch_addr); | |
296 | scratch_addr += 128; | |
297 | PIPE_CONTROL_FLUSH(scratch_addr); | |
298 | OUT_RING(GFX_OP_PIPE_CONTROL | PIPE_CONTROL_QW_WRITE | | |
299 | PIPE_CONTROL_WC_FLUSH | PIPE_CONTROL_TC_FLUSH | | |
300 | PIPE_CONTROL_NOTIFY); | |
301 | OUT_RING(dev_priv->seqno_gfx_addr | PIPE_CONTROL_GLOBAL_GTT); | |
302 | OUT_RING(seqno); | |
303 | OUT_RING(0); | |
304 | ADVANCE_LP_RING(); | |
305 | } else { | |
306 | BEGIN_LP_RING(4); | |
307 | OUT_RING(MI_STORE_DWORD_INDEX); | |
308 | OUT_RING(I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
309 | OUT_RING(seqno); | |
310 | ||
311 | OUT_RING(MI_USER_INTERRUPT); | |
312 | ADVANCE_LP_RING(); | |
313 | } | |
314 | return seqno; | |
315 | } | |
316 | ||
317 | static u32 | |
318 | render_ring_get_gem_seqno(struct drm_device *dev, | |
319 | struct intel_ring_buffer *ring) | |
320 | { | |
321 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
322 | if (HAS_PIPE_CONTROL(dev)) | |
323 | return ((volatile u32 *)(dev_priv->seqno_page))[0]; | |
324 | else | |
325 | return intel_read_status_page(ring, I915_GEM_HWS_INDEX); | |
326 | } | |
327 | ||
328 | static void | |
329 | render_ring_get_user_irq(struct drm_device *dev, | |
330 | struct intel_ring_buffer *ring) | |
331 | { | |
332 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
333 | unsigned long irqflags; | |
334 | ||
335 | spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); | |
336 | if (dev->irq_enabled && (++ring->user_irq_refcount == 1)) { | |
337 | if (HAS_PCH_SPLIT(dev)) | |
338 | ironlake_enable_graphics_irq(dev_priv, GT_PIPE_NOTIFY); | |
339 | else | |
340 | i915_enable_irq(dev_priv, I915_USER_INTERRUPT); | |
341 | } | |
342 | spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); | |
343 | } | |
344 | ||
345 | static void | |
346 | render_ring_put_user_irq(struct drm_device *dev, | |
347 | struct intel_ring_buffer *ring) | |
348 | { | |
349 | drm_i915_private_t *dev_priv = (drm_i915_private_t *) dev->dev_private; | |
350 | unsigned long irqflags; | |
351 | ||
352 | spin_lock_irqsave(&dev_priv->user_irq_lock, irqflags); | |
353 | BUG_ON(dev->irq_enabled && ring->user_irq_refcount <= 0); | |
354 | if (dev->irq_enabled && (--ring->user_irq_refcount == 0)) { | |
355 | if (HAS_PCH_SPLIT(dev)) | |
356 | ironlake_disable_graphics_irq(dev_priv, GT_PIPE_NOTIFY); | |
357 | else | |
358 | i915_disable_irq(dev_priv, I915_USER_INTERRUPT); | |
359 | } | |
360 | spin_unlock_irqrestore(&dev_priv->user_irq_lock, irqflags); | |
361 | } | |
362 | ||
363 | static void render_setup_status_page(struct drm_device *dev, | |
364 | struct intel_ring_buffer *ring) | |
365 | { | |
366 | drm_i915_private_t *dev_priv = dev->dev_private; | |
367 | if (IS_GEN6(dev)) { | |
368 | I915_WRITE(HWS_PGA_GEN6, ring->status_page.gfx_addr); | |
369 | I915_READ(HWS_PGA_GEN6); /* posting read */ | |
370 | } else { | |
371 | I915_WRITE(HWS_PGA, ring->status_page.gfx_addr); | |
372 | I915_READ(HWS_PGA); /* posting read */ | |
373 | } | |
374 | ||
375 | } | |
376 | ||
377 | void | |
378 | bsd_ring_flush(struct drm_device *dev, | |
379 | struct intel_ring_buffer *ring, | |
380 | u32 invalidate_domains, | |
381 | u32 flush_domains) | |
382 | { | |
383 | intel_ring_begin(dev, ring, 2); | |
384 | intel_ring_emit(dev, ring, MI_FLUSH); | |
385 | intel_ring_emit(dev, ring, MI_NOOP); | |
386 | intel_ring_advance(dev, ring); | |
387 | } | |
388 | ||
389 | static inline unsigned int bsd_ring_get_head(struct drm_device *dev, | |
390 | struct intel_ring_buffer *ring) | |
391 | { | |
392 | drm_i915_private_t *dev_priv = dev->dev_private; | |
393 | return I915_READ(BSD_RING_HEAD) & HEAD_ADDR; | |
394 | } | |
395 | ||
396 | static inline unsigned int bsd_ring_get_tail(struct drm_device *dev, | |
397 | struct intel_ring_buffer *ring) | |
398 | { | |
399 | drm_i915_private_t *dev_priv = dev->dev_private; | |
400 | return I915_READ(BSD_RING_TAIL) & TAIL_ADDR; | |
401 | } | |
402 | ||
403 | static inline void bsd_ring_set_tail(struct drm_device *dev, u32 value) | |
404 | { | |
405 | drm_i915_private_t *dev_priv = dev->dev_private; | |
406 | I915_WRITE(BSD_RING_TAIL, value); | |
407 | } | |
408 | ||
409 | static inline unsigned int bsd_ring_get_active_head(struct drm_device *dev, | |
410 | struct intel_ring_buffer *ring) | |
411 | { | |
412 | drm_i915_private_t *dev_priv = dev->dev_private; | |
413 | return I915_READ(BSD_RING_ACTHD); | |
414 | } | |
415 | ||
416 | static int init_bsd_ring(struct drm_device *dev, | |
417 | struct intel_ring_buffer *ring) | |
418 | { | |
419 | return init_ring_common(dev, ring); | |
420 | } | |
421 | ||
422 | static u32 | |
423 | bsd_ring_add_request(struct drm_device *dev, | |
424 | struct intel_ring_buffer *ring, | |
425 | struct drm_file *file_priv, | |
426 | u32 flush_domains) | |
427 | { | |
428 | u32 seqno; | |
429 | ||
430 | seqno = i915_gem_get_seqno(dev); | |
431 | ||
432 | intel_ring_begin(dev, ring, 4); | |
433 | intel_ring_emit(dev, ring, MI_STORE_DWORD_INDEX); | |
434 | intel_ring_emit(dev, ring, | |
435 | I915_GEM_HWS_INDEX << MI_STORE_DWORD_INDEX_SHIFT); | |
436 | intel_ring_emit(dev, ring, seqno); | |
437 | intel_ring_emit(dev, ring, MI_USER_INTERRUPT); | |
438 | intel_ring_advance(dev, ring); | |
439 | ||
440 | DRM_DEBUG_DRIVER("%s %d\n", ring->name, seqno); | |
441 | ||
442 | return seqno; | |
443 | } | |
444 | ||
445 | static void bsd_setup_status_page(struct drm_device *dev, | |
446 | struct intel_ring_buffer *ring) | |
447 | { | |
448 | drm_i915_private_t *dev_priv = dev->dev_private; | |
449 | I915_WRITE(BSD_HWS_PGA, ring->status_page.gfx_addr); | |
450 | I915_READ(BSD_HWS_PGA); | |
451 | } | |
452 | ||
453 | static void | |
454 | bsd_ring_get_user_irq(struct drm_device *dev, | |
455 | struct intel_ring_buffer *ring) | |
456 | { | |
457 | /* do nothing */ | |
458 | } | |
459 | static void | |
460 | bsd_ring_put_user_irq(struct drm_device *dev, | |
461 | struct intel_ring_buffer *ring) | |
462 | { | |
463 | /* do nothing */ | |
464 | } | |
465 | ||
466 | static u32 | |
467 | bsd_ring_get_gem_seqno(struct drm_device *dev, | |
468 | struct intel_ring_buffer *ring) | |
469 | { | |
470 | return intel_read_status_page(ring, I915_GEM_HWS_INDEX); | |
471 | } | |
472 | ||
473 | static int | |
474 | bsd_ring_dispatch_gem_execbuffer(struct drm_device *dev, | |
475 | struct intel_ring_buffer *ring, | |
476 | struct drm_i915_gem_execbuffer2 *exec, | |
477 | struct drm_clip_rect *cliprects, | |
478 | uint64_t exec_offset) | |
479 | { | |
480 | uint32_t exec_start; | |
481 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
482 | intel_ring_begin(dev, ring, 2); | |
483 | intel_ring_emit(dev, ring, MI_BATCH_BUFFER_START | | |
484 | (2 << 6) | MI_BATCH_NON_SECURE_I965); | |
485 | intel_ring_emit(dev, ring, exec_start); | |
486 | intel_ring_advance(dev, ring); | |
487 | return 0; | |
488 | } | |
489 | ||
490 | ||
491 | static int | |
492 | render_ring_dispatch_gem_execbuffer(struct drm_device *dev, | |
493 | struct intel_ring_buffer *ring, | |
494 | struct drm_i915_gem_execbuffer2 *exec, | |
495 | struct drm_clip_rect *cliprects, | |
496 | uint64_t exec_offset) | |
497 | { | |
498 | drm_i915_private_t *dev_priv = dev->dev_private; | |
499 | int nbox = exec->num_cliprects; | |
500 | int i = 0, count; | |
501 | uint32_t exec_start, exec_len; | |
502 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
503 | exec_len = (uint32_t) exec->batch_len; | |
504 | ||
505 | trace_i915_gem_request_submit(dev, dev_priv->next_seqno + 1); | |
506 | ||
507 | count = nbox ? nbox : 1; | |
508 | ||
509 | for (i = 0; i < count; i++) { | |
510 | if (i < nbox) { | |
511 | int ret = i915_emit_box(dev, cliprects, i, | |
512 | exec->DR1, exec->DR4); | |
513 | if (ret) | |
514 | return ret; | |
515 | } | |
516 | ||
517 | if (IS_I830(dev) || IS_845G(dev)) { | |
518 | intel_ring_begin(dev, ring, 4); | |
519 | intel_ring_emit(dev, ring, MI_BATCH_BUFFER); | |
520 | intel_ring_emit(dev, ring, | |
521 | exec_start | MI_BATCH_NON_SECURE); | |
522 | intel_ring_emit(dev, ring, exec_start + exec_len - 4); | |
523 | intel_ring_emit(dev, ring, 0); | |
524 | } else { | |
525 | intel_ring_begin(dev, ring, 4); | |
526 | if (INTEL_INFO(dev)->gen >= 4) { | |
527 | intel_ring_emit(dev, ring, | |
528 | MI_BATCH_BUFFER_START | (2 << 6) | |
529 | | MI_BATCH_NON_SECURE_I965); | |
530 | intel_ring_emit(dev, ring, exec_start); | |
531 | } else { | |
532 | intel_ring_emit(dev, ring, MI_BATCH_BUFFER_START | |
533 | | (2 << 6)); | |
534 | intel_ring_emit(dev, ring, exec_start | | |
535 | MI_BATCH_NON_SECURE); | |
536 | } | |
537 | } | |
538 | intel_ring_advance(dev, ring); | |
539 | } | |
540 | ||
541 | if (IS_G4X(dev) || IS_IRONLAKE(dev)) { | |
542 | intel_ring_begin(dev, ring, 2); | |
543 | intel_ring_emit(dev, ring, MI_FLUSH | | |
544 | MI_NO_WRITE_FLUSH | | |
545 | MI_INVALIDATE_ISP ); | |
546 | intel_ring_emit(dev, ring, MI_NOOP); | |
547 | intel_ring_advance(dev, ring); | |
548 | } | |
549 | /* XXX breadcrumb */ | |
550 | ||
551 | return 0; | |
552 | } | |
553 | ||
554 | static void cleanup_status_page(struct drm_device *dev, | |
555 | struct intel_ring_buffer *ring) | |
556 | { | |
557 | drm_i915_private_t *dev_priv = dev->dev_private; | |
558 | struct drm_gem_object *obj; | |
559 | struct drm_i915_gem_object *obj_priv; | |
560 | ||
561 | obj = ring->status_page.obj; | |
562 | if (obj == NULL) | |
563 | return; | |
564 | obj_priv = to_intel_bo(obj); | |
565 | ||
566 | kunmap(obj_priv->pages[0]); | |
567 | i915_gem_object_unpin(obj); | |
568 | drm_gem_object_unreference(obj); | |
569 | ring->status_page.obj = NULL; | |
570 | ||
571 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); | |
572 | } | |
573 | ||
574 | static int init_status_page(struct drm_device *dev, | |
575 | struct intel_ring_buffer *ring) | |
576 | { | |
577 | drm_i915_private_t *dev_priv = dev->dev_private; | |
578 | struct drm_gem_object *obj; | |
579 | struct drm_i915_gem_object *obj_priv; | |
580 | int ret; | |
581 | ||
582 | obj = i915_gem_alloc_object(dev, 4096); | |
583 | if (obj == NULL) { | |
584 | DRM_ERROR("Failed to allocate status page\n"); | |
585 | ret = -ENOMEM; | |
586 | goto err; | |
587 | } | |
588 | obj_priv = to_intel_bo(obj); | |
589 | obj_priv->agp_type = AGP_USER_CACHED_MEMORY; | |
590 | ||
591 | ret = i915_gem_object_pin(obj, 4096); | |
592 | if (ret != 0) { | |
593 | goto err_unref; | |
594 | } | |
595 | ||
596 | ring->status_page.gfx_addr = obj_priv->gtt_offset; | |
597 | ring->status_page.page_addr = kmap(obj_priv->pages[0]); | |
598 | if (ring->status_page.page_addr == NULL) { | |
599 | memset(&dev_priv->hws_map, 0, sizeof(dev_priv->hws_map)); | |
600 | goto err_unpin; | |
601 | } | |
602 | ring->status_page.obj = obj; | |
603 | memset(ring->status_page.page_addr, 0, PAGE_SIZE); | |
604 | ||
605 | ring->setup_status_page(dev, ring); | |
606 | DRM_DEBUG_DRIVER("%s hws offset: 0x%08x\n", | |
607 | ring->name, ring->status_page.gfx_addr); | |
608 | ||
609 | return 0; | |
610 | ||
611 | err_unpin: | |
612 | i915_gem_object_unpin(obj); | |
613 | err_unref: | |
614 | drm_gem_object_unreference(obj); | |
615 | err: | |
616 | return ret; | |
617 | } | |
618 | ||
619 | ||
620 | int intel_init_ring_buffer(struct drm_device *dev, | |
621 | struct intel_ring_buffer *ring) | |
622 | { | |
623 | struct drm_i915_gem_object *obj_priv; | |
624 | struct drm_gem_object *obj; | |
625 | int ret; | |
626 | ||
627 | ring->dev = dev; | |
628 | ||
629 | if (I915_NEED_GFX_HWS(dev)) { | |
630 | ret = init_status_page(dev, ring); | |
631 | if (ret) | |
632 | return ret; | |
633 | } | |
634 | ||
635 | obj = i915_gem_alloc_object(dev, ring->size); | |
636 | if (obj == NULL) { | |
637 | DRM_ERROR("Failed to allocate ringbuffer\n"); | |
638 | ret = -ENOMEM; | |
639 | goto err_hws; | |
640 | } | |
641 | ||
642 | ring->gem_object = obj; | |
643 | ||
644 | ret = i915_gem_object_pin(obj, ring->alignment); | |
645 | if (ret) | |
646 | goto err_unref; | |
647 | ||
648 | obj_priv = to_intel_bo(obj); | |
649 | ring->map.size = ring->size; | |
650 | ring->map.offset = dev->agp->base + obj_priv->gtt_offset; | |
651 | ring->map.type = 0; | |
652 | ring->map.flags = 0; | |
653 | ring->map.mtrr = 0; | |
654 | ||
655 | drm_core_ioremap_wc(&ring->map, dev); | |
656 | if (ring->map.handle == NULL) { | |
657 | DRM_ERROR("Failed to map ringbuffer.\n"); | |
658 | ret = -EINVAL; | |
659 | goto err_unpin; | |
660 | } | |
661 | ||
662 | ring->virtual_start = ring->map.handle; | |
663 | ret = ring->init(dev, ring); | |
664 | if (ret) | |
665 | goto err_unmap; | |
666 | ||
667 | if (!drm_core_check_feature(dev, DRIVER_MODESET)) | |
668 | i915_kernel_lost_context(dev); | |
669 | else { | |
670 | ring->head = ring->get_head(dev, ring); | |
671 | ring->tail = ring->get_tail(dev, ring); | |
672 | ring->space = ring->head - (ring->tail + 8); | |
673 | if (ring->space < 0) | |
674 | ring->space += ring->size; | |
675 | } | |
676 | INIT_LIST_HEAD(&ring->active_list); | |
677 | INIT_LIST_HEAD(&ring->request_list); | |
678 | return ret; | |
679 | ||
680 | err_unmap: | |
681 | drm_core_ioremapfree(&ring->map, dev); | |
682 | err_unpin: | |
683 | i915_gem_object_unpin(obj); | |
684 | err_unref: | |
685 | drm_gem_object_unreference(obj); | |
686 | ring->gem_object = NULL; | |
687 | err_hws: | |
688 | cleanup_status_page(dev, ring); | |
689 | return ret; | |
690 | } | |
691 | ||
692 | void intel_cleanup_ring_buffer(struct drm_device *dev, | |
693 | struct intel_ring_buffer *ring) | |
694 | { | |
695 | if (ring->gem_object == NULL) | |
696 | return; | |
697 | ||
698 | drm_core_ioremapfree(&ring->map, dev); | |
699 | ||
700 | i915_gem_object_unpin(ring->gem_object); | |
701 | drm_gem_object_unreference(ring->gem_object); | |
702 | ring->gem_object = NULL; | |
703 | cleanup_status_page(dev, ring); | |
704 | } | |
705 | ||
706 | int intel_wrap_ring_buffer(struct drm_device *dev, | |
707 | struct intel_ring_buffer *ring) | |
708 | { | |
709 | unsigned int *virt; | |
710 | int rem; | |
711 | rem = ring->size - ring->tail; | |
712 | ||
713 | if (ring->space < rem) { | |
714 | int ret = intel_wait_ring_buffer(dev, ring, rem); | |
715 | if (ret) | |
716 | return ret; | |
717 | } | |
718 | ||
719 | virt = (unsigned int *)(ring->virtual_start + ring->tail); | |
720 | rem /= 8; | |
721 | while (rem--) { | |
722 | *virt++ = MI_NOOP; | |
723 | *virt++ = MI_NOOP; | |
724 | } | |
725 | ||
726 | ring->tail = 0; | |
727 | ring->space = ring->head - 8; | |
728 | ||
729 | return 0; | |
730 | } | |
731 | ||
732 | int intel_wait_ring_buffer(struct drm_device *dev, | |
733 | struct intel_ring_buffer *ring, int n) | |
734 | { | |
735 | unsigned long end; | |
736 | ||
737 | trace_i915_ring_wait_begin (dev); | |
738 | end = jiffies + 3 * HZ; | |
739 | do { | |
740 | ring->head = ring->get_head(dev, ring); | |
741 | ring->space = ring->head - (ring->tail + 8); | |
742 | if (ring->space < 0) | |
743 | ring->space += ring->size; | |
744 | if (ring->space >= n) { | |
745 | trace_i915_ring_wait_end (dev); | |
746 | return 0; | |
747 | } | |
748 | ||
749 | if (dev->primary->master) { | |
750 | struct drm_i915_master_private *master_priv = dev->primary->master->driver_priv; | |
751 | if (master_priv->sarea_priv) | |
752 | master_priv->sarea_priv->perf_boxes |= I915_BOX_WAIT; | |
753 | } | |
754 | ||
755 | yield(); | |
756 | } while (!time_after(jiffies, end)); | |
757 | trace_i915_ring_wait_end (dev); | |
758 | return -EBUSY; | |
759 | } | |
760 | ||
761 | void intel_ring_begin(struct drm_device *dev, | |
762 | struct intel_ring_buffer *ring, int num_dwords) | |
763 | { | |
764 | int n = 4*num_dwords; | |
765 | if (unlikely(ring->tail + n > ring->size)) | |
766 | intel_wrap_ring_buffer(dev, ring); | |
767 | if (unlikely(ring->space < n)) | |
768 | intel_wait_ring_buffer(dev, ring, n); | |
769 | ||
770 | ring->space -= n; | |
771 | } | |
772 | ||
773 | void intel_ring_advance(struct drm_device *dev, | |
774 | struct intel_ring_buffer *ring) | |
775 | { | |
776 | ring->tail &= ring->size - 1; | |
777 | ring->set_tail(dev, ring->tail); | |
778 | } | |
779 | ||
780 | void intel_fill_struct(struct drm_device *dev, | |
781 | struct intel_ring_buffer *ring, | |
782 | void *data, | |
783 | unsigned int len) | |
784 | { | |
785 | unsigned int *virt = ring->virtual_start + ring->tail; | |
786 | BUG_ON((len&~(4-1)) != 0); | |
787 | intel_ring_begin(dev, ring, len/4); | |
788 | memcpy(virt, data, len); | |
789 | ring->tail += len; | |
790 | ring->tail &= ring->size - 1; | |
791 | ring->space -= len; | |
792 | intel_ring_advance(dev, ring); | |
793 | } | |
794 | ||
795 | static struct intel_ring_buffer render_ring = { | |
796 | .name = "render ring", | |
797 | .id = RING_RENDER, | |
798 | .regs = { | |
799 | .ctl = PRB0_CTL, | |
800 | .head = PRB0_HEAD, | |
801 | .tail = PRB0_TAIL, | |
802 | .start = PRB0_START | |
803 | }, | |
804 | .size = 32 * PAGE_SIZE, | |
805 | .alignment = PAGE_SIZE, | |
806 | .virtual_start = NULL, | |
807 | .dev = NULL, | |
808 | .gem_object = NULL, | |
809 | .head = 0, | |
810 | .tail = 0, | |
811 | .space = 0, | |
812 | .user_irq_refcount = 0, | |
813 | .irq_gem_seqno = 0, | |
814 | .waiting_gem_seqno = 0, | |
815 | .setup_status_page = render_setup_status_page, | |
816 | .init = init_render_ring, | |
817 | .get_head = render_ring_get_head, | |
818 | .get_tail = render_ring_get_tail, | |
819 | .set_tail = render_ring_set_tail, | |
820 | .get_active_head = render_ring_get_active_head, | |
821 | .flush = render_ring_flush, | |
822 | .add_request = render_ring_add_request, | |
823 | .get_gem_seqno = render_ring_get_gem_seqno, | |
824 | .user_irq_get = render_ring_get_user_irq, | |
825 | .user_irq_put = render_ring_put_user_irq, | |
826 | .dispatch_gem_execbuffer = render_ring_dispatch_gem_execbuffer, | |
827 | .status_page = {NULL, 0, NULL}, | |
828 | .map = {0,} | |
829 | }; | |
830 | ||
831 | /* ring buffer for bit-stream decoder */ | |
832 | ||
833 | static struct intel_ring_buffer bsd_ring = { | |
834 | .name = "bsd ring", | |
835 | .id = RING_BSD, | |
836 | .regs = { | |
837 | .ctl = BSD_RING_CTL, | |
838 | .head = BSD_RING_HEAD, | |
839 | .tail = BSD_RING_TAIL, | |
840 | .start = BSD_RING_START | |
841 | }, | |
842 | .size = 32 * PAGE_SIZE, | |
843 | .alignment = PAGE_SIZE, | |
844 | .virtual_start = NULL, | |
845 | .dev = NULL, | |
846 | .gem_object = NULL, | |
847 | .head = 0, | |
848 | .tail = 0, | |
849 | .space = 0, | |
850 | .user_irq_refcount = 0, | |
851 | .irq_gem_seqno = 0, | |
852 | .waiting_gem_seqno = 0, | |
853 | .setup_status_page = bsd_setup_status_page, | |
854 | .init = init_bsd_ring, | |
855 | .get_head = bsd_ring_get_head, | |
856 | .get_tail = bsd_ring_get_tail, | |
857 | .set_tail = bsd_ring_set_tail, | |
858 | .get_active_head = bsd_ring_get_active_head, | |
859 | .flush = bsd_ring_flush, | |
860 | .add_request = bsd_ring_add_request, | |
861 | .get_gem_seqno = bsd_ring_get_gem_seqno, | |
862 | .user_irq_get = bsd_ring_get_user_irq, | |
863 | .user_irq_put = bsd_ring_put_user_irq, | |
864 | .dispatch_gem_execbuffer = bsd_ring_dispatch_gem_execbuffer, | |
865 | .status_page = {NULL, 0, NULL}, | |
866 | .map = {0,} | |
867 | }; | |
868 | ||
869 | ||
870 | static void gen6_bsd_setup_status_page(struct drm_device *dev, | |
871 | struct intel_ring_buffer *ring) | |
872 | { | |
873 | drm_i915_private_t *dev_priv = dev->dev_private; | |
874 | I915_WRITE(GEN6_BSD_HWS_PGA, ring->status_page.gfx_addr); | |
875 | I915_READ(GEN6_BSD_HWS_PGA); | |
876 | } | |
877 | ||
878 | static inline unsigned int gen6_bsd_ring_get_head(struct drm_device *dev, | |
879 | struct intel_ring_buffer *ring) | |
880 | { | |
881 | drm_i915_private_t *dev_priv = dev->dev_private; | |
882 | return I915_READ(GEN6_BSD_RING_HEAD) & HEAD_ADDR; | |
883 | } | |
884 | ||
885 | static inline unsigned int gen6_bsd_ring_get_tail(struct drm_device *dev, | |
886 | struct intel_ring_buffer *ring) | |
887 | { | |
888 | drm_i915_private_t *dev_priv = dev->dev_private; | |
889 | return I915_READ(GEN6_BSD_RING_TAIL) & TAIL_ADDR; | |
890 | } | |
891 | ||
892 | static inline void gen6_bsd_ring_set_tail(struct drm_device *dev, | |
893 | u32 value) | |
894 | { | |
895 | drm_i915_private_t *dev_priv = dev->dev_private; | |
896 | ||
897 | /* Every tail move must follow the sequence below */ | |
898 | I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, | |
899 | GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_MODIFY_MASK | | |
900 | GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_DISABLE); | |
901 | I915_WRITE(GEN6_BSD_RNCID, 0x0); | |
902 | ||
903 | if (wait_for((I915_READ(GEN6_BSD_SLEEP_PSMI_CONTROL) & | |
904 | GEN6_BSD_SLEEP_PSMI_CONTROL_IDLE_INDICATOR) == 0, | |
905 | 50)) | |
906 | DRM_ERROR("timed out waiting for IDLE Indicator\n"); | |
907 | ||
908 | I915_WRITE(GEN6_BSD_RING_TAIL, value); | |
909 | I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL, | |
910 | GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_MODIFY_MASK | | |
911 | GEN6_BSD_SLEEP_PSMI_CONTROL_RC_ILDL_MESSAGE_ENABLE); | |
912 | } | |
913 | ||
914 | static inline unsigned int gen6_bsd_ring_get_active_head(struct drm_device *dev, | |
915 | struct intel_ring_buffer *ring) | |
916 | { | |
917 | drm_i915_private_t *dev_priv = dev->dev_private; | |
918 | return I915_READ(GEN6_BSD_RING_ACTHD); | |
919 | } | |
920 | ||
921 | static void gen6_bsd_ring_flush(struct drm_device *dev, | |
922 | struct intel_ring_buffer *ring, | |
923 | u32 invalidate_domains, | |
924 | u32 flush_domains) | |
925 | { | |
926 | intel_ring_begin(dev, ring, 4); | |
927 | intel_ring_emit(dev, ring, MI_FLUSH_DW); | |
928 | intel_ring_emit(dev, ring, 0); | |
929 | intel_ring_emit(dev, ring, 0); | |
930 | intel_ring_emit(dev, ring, 0); | |
931 | intel_ring_advance(dev, ring); | |
932 | } | |
933 | ||
934 | static int | |
935 | gen6_bsd_ring_dispatch_gem_execbuffer(struct drm_device *dev, | |
936 | struct intel_ring_buffer *ring, | |
937 | struct drm_i915_gem_execbuffer2 *exec, | |
938 | struct drm_clip_rect *cliprects, | |
939 | uint64_t exec_offset) | |
940 | { | |
941 | uint32_t exec_start; | |
942 | exec_start = (uint32_t) exec_offset + exec->batch_start_offset; | |
943 | intel_ring_begin(dev, ring, 2); | |
944 | intel_ring_emit(dev, ring, MI_BATCH_BUFFER_START | MI_BATCH_NON_SECURE_I965); /* bit0-7 is the length on GEN6+ */ | |
945 | intel_ring_emit(dev, ring, exec_start); | |
946 | intel_ring_advance(dev, ring); | |
947 | return 0; | |
948 | } | |
949 | ||
950 | /* ring buffer for Video Codec for Gen6+ */ | |
951 | static struct intel_ring_buffer gen6_bsd_ring = { | |
952 | .name = "gen6 bsd ring", | |
953 | .id = RING_BSD, | |
954 | .regs = { | |
955 | .ctl = GEN6_BSD_RING_CTL, | |
956 | .head = GEN6_BSD_RING_HEAD, | |
957 | .tail = GEN6_BSD_RING_TAIL, | |
958 | .start = GEN6_BSD_RING_START | |
959 | }, | |
960 | .size = 32 * PAGE_SIZE, | |
961 | .alignment = PAGE_SIZE, | |
962 | .virtual_start = NULL, | |
963 | .dev = NULL, | |
964 | .gem_object = NULL, | |
965 | .head = 0, | |
966 | .tail = 0, | |
967 | .space = 0, | |
968 | .user_irq_refcount = 0, | |
969 | .irq_gem_seqno = 0, | |
970 | .waiting_gem_seqno = 0, | |
971 | .setup_status_page = gen6_bsd_setup_status_page, | |
972 | .init = init_bsd_ring, | |
973 | .get_head = gen6_bsd_ring_get_head, | |
974 | .get_tail = gen6_bsd_ring_get_tail, | |
975 | .set_tail = gen6_bsd_ring_set_tail, | |
976 | .get_active_head = gen6_bsd_ring_get_active_head, | |
977 | .flush = gen6_bsd_ring_flush, | |
978 | .add_request = bsd_ring_add_request, | |
979 | .get_gem_seqno = bsd_ring_get_gem_seqno, | |
980 | .user_irq_get = bsd_ring_get_user_irq, | |
981 | .user_irq_put = bsd_ring_put_user_irq, | |
982 | .dispatch_gem_execbuffer = gen6_bsd_ring_dispatch_gem_execbuffer, | |
983 | .status_page = {NULL, 0, NULL}, | |
984 | .map = {0,} | |
985 | }; | |
986 | ||
987 | int intel_init_render_ring_buffer(struct drm_device *dev) | |
988 | { | |
989 | drm_i915_private_t *dev_priv = dev->dev_private; | |
990 | ||
991 | dev_priv->render_ring = render_ring; | |
992 | ||
993 | if (!I915_NEED_GFX_HWS(dev)) { | |
994 | dev_priv->render_ring.status_page.page_addr | |
995 | = dev_priv->status_page_dmah->vaddr; | |
996 | memset(dev_priv->render_ring.status_page.page_addr, | |
997 | 0, PAGE_SIZE); | |
998 | } | |
999 | ||
1000 | return intel_init_ring_buffer(dev, &dev_priv->render_ring); | |
1001 | } | |
1002 | ||
1003 | int intel_init_bsd_ring_buffer(struct drm_device *dev) | |
1004 | { | |
1005 | drm_i915_private_t *dev_priv = dev->dev_private; | |
1006 | ||
1007 | if (IS_GEN6(dev)) | |
1008 | dev_priv->bsd_ring = gen6_bsd_ring; | |
1009 | else | |
1010 | dev_priv->bsd_ring = bsd_ring; | |
1011 | ||
1012 | return intel_init_ring_buffer(dev, &dev_priv->bsd_ring); | |
1013 | } |