2 * Copyright © 2008-2010 Intel Corporation
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:
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
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
24 * Eric Anholt <eric@anholt.net>
25 * Zou Nan hai <nanhai.zou@intel.com>
26 * Xiang Hai hao<haihao.xiang@intel.com>
32 #include <drm/i915_drm.h>
33 #include "i915_trace.h"
34 #include "intel_drv.h"
37 intel_ring_initialized(struct intel_engine_cs
*ring
)
39 struct drm_device
*dev
= ring
->dev
;
44 if (i915
.enable_execlists
) {
45 struct intel_context
*dctx
= ring
->default_context
;
46 struct intel_ringbuffer
*ringbuf
= dctx
->engine
[ring
->id
].ringbuf
;
50 return ring
->buffer
&& ring
->buffer
->obj
;
53 int __intel_ring_space(int head
, int tail
, int size
)
55 int space
= head
- tail
;
58 return space
- I915_RING_FREE_SPACE
;
61 void intel_ring_update_space(struct intel_ringbuffer
*ringbuf
)
63 if (ringbuf
->last_retired_head
!= -1) {
64 ringbuf
->head
= ringbuf
->last_retired_head
;
65 ringbuf
->last_retired_head
= -1;
68 ringbuf
->space
= __intel_ring_space(ringbuf
->head
& HEAD_ADDR
,
69 ringbuf
->tail
, ringbuf
->size
);
72 int intel_ring_space(struct intel_ringbuffer
*ringbuf
)
74 intel_ring_update_space(ringbuf
);
75 return ringbuf
->space
;
78 bool intel_ring_stopped(struct intel_engine_cs
*ring
)
80 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
81 return dev_priv
->gpu_error
.stop_rings
& intel_ring_flag(ring
);
84 void __intel_ring_advance(struct intel_engine_cs
*ring
)
86 struct intel_ringbuffer
*ringbuf
= ring
->buffer
;
87 ringbuf
->tail
&= ringbuf
->size
- 1;
88 if (intel_ring_stopped(ring
))
90 ring
->write_tail(ring
, ringbuf
->tail
);
94 gen2_render_ring_flush(struct intel_engine_cs
*ring
,
95 u32 invalidate_domains
,
102 if (((invalidate_domains
|flush_domains
) & I915_GEM_DOMAIN_RENDER
) == 0)
103 cmd
|= MI_NO_WRITE_FLUSH
;
105 if (invalidate_domains
& I915_GEM_DOMAIN_SAMPLER
)
106 cmd
|= MI_READ_FLUSH
;
108 ret
= intel_ring_begin(ring
, 2);
112 intel_ring_emit(ring
, cmd
);
113 intel_ring_emit(ring
, MI_NOOP
);
114 intel_ring_advance(ring
);
120 gen4_render_ring_flush(struct intel_engine_cs
*ring
,
121 u32 invalidate_domains
,
124 struct drm_device
*dev
= ring
->dev
;
131 * I915_GEM_DOMAIN_RENDER is always invalidated, but is
132 * only flushed if MI_NO_WRITE_FLUSH is unset. On 965, it is
133 * also flushed at 2d versus 3d pipeline switches.
137 * I915_GEM_DOMAIN_SAMPLER is flushed on pre-965 if
138 * MI_READ_FLUSH is set, and is always flushed on 965.
140 * I915_GEM_DOMAIN_COMMAND may not exist?
142 * I915_GEM_DOMAIN_INSTRUCTION, which exists on 965, is
143 * invalidated when MI_EXE_FLUSH is set.
145 * I915_GEM_DOMAIN_VERTEX, which exists on 965, is
146 * invalidated with every MI_FLUSH.
150 * On 965, TLBs associated with I915_GEM_DOMAIN_COMMAND
151 * and I915_GEM_DOMAIN_CPU in are invalidated at PTE write and
152 * I915_GEM_DOMAIN_RENDER and I915_GEM_DOMAIN_SAMPLER
153 * are flushed at any MI_FLUSH.
156 cmd
= MI_FLUSH
| MI_NO_WRITE_FLUSH
;
157 if ((invalidate_domains
|flush_domains
) & I915_GEM_DOMAIN_RENDER
)
158 cmd
&= ~MI_NO_WRITE_FLUSH
;
159 if (invalidate_domains
& I915_GEM_DOMAIN_INSTRUCTION
)
162 if (invalidate_domains
& I915_GEM_DOMAIN_COMMAND
&&
163 (IS_G4X(dev
) || IS_GEN5(dev
)))
164 cmd
|= MI_INVALIDATE_ISP
;
166 ret
= intel_ring_begin(ring
, 2);
170 intel_ring_emit(ring
, cmd
);
171 intel_ring_emit(ring
, MI_NOOP
);
172 intel_ring_advance(ring
);
178 * Emits a PIPE_CONTROL with a non-zero post-sync operation, for
179 * implementing two workarounds on gen6. From section 1.4.7.1
180 * "PIPE_CONTROL" of the Sandy Bridge PRM volume 2 part 1:
182 * [DevSNB-C+{W/A}] Before any depth stall flush (including those
183 * produced by non-pipelined state commands), software needs to first
184 * send a PIPE_CONTROL with no bits set except Post-Sync Operation !=
187 * [Dev-SNB{W/A}]: Before a PIPE_CONTROL with Write Cache Flush Enable
188 * =1, a PIPE_CONTROL with any non-zero post-sync-op is required.
190 * And the workaround for these two requires this workaround first:
192 * [Dev-SNB{W/A}]: Pipe-control with CS-stall bit set must be sent
193 * BEFORE the pipe-control with a post-sync op and no write-cache
196 * And this last workaround is tricky because of the requirements on
197 * that bit. From section 1.4.7.2.3 "Stall" of the Sandy Bridge PRM
200 * "1 of the following must also be set:
201 * - Render Target Cache Flush Enable ([12] of DW1)
202 * - Depth Cache Flush Enable ([0] of DW1)
203 * - Stall at Pixel Scoreboard ([1] of DW1)
204 * - Depth Stall ([13] of DW1)
205 * - Post-Sync Operation ([13] of DW1)
206 * - Notify Enable ([8] of DW1)"
208 * The cache flushes require the workaround flush that triggered this
209 * one, so we can't use it. Depth stall would trigger the same.
210 * Post-sync nonzero is what triggered this second workaround, so we
211 * can't use that one either. Notify enable is IRQs, which aren't
212 * really our business. That leaves only stall at scoreboard.
215 intel_emit_post_sync_nonzero_flush(struct intel_engine_cs
*ring
)
217 u32 scratch_addr
= ring
->scratch
.gtt_offset
+ 2 * CACHELINE_BYTES
;
221 ret
= intel_ring_begin(ring
, 6);
225 intel_ring_emit(ring
, GFX_OP_PIPE_CONTROL(5));
226 intel_ring_emit(ring
, PIPE_CONTROL_CS_STALL
|
227 PIPE_CONTROL_STALL_AT_SCOREBOARD
);
228 intel_ring_emit(ring
, scratch_addr
| PIPE_CONTROL_GLOBAL_GTT
); /* address */
229 intel_ring_emit(ring
, 0); /* low dword */
230 intel_ring_emit(ring
, 0); /* high dword */
231 intel_ring_emit(ring
, MI_NOOP
);
232 intel_ring_advance(ring
);
234 ret
= intel_ring_begin(ring
, 6);
238 intel_ring_emit(ring
, GFX_OP_PIPE_CONTROL(5));
239 intel_ring_emit(ring
, PIPE_CONTROL_QW_WRITE
);
240 intel_ring_emit(ring
, scratch_addr
| PIPE_CONTROL_GLOBAL_GTT
); /* address */
241 intel_ring_emit(ring
, 0);
242 intel_ring_emit(ring
, 0);
243 intel_ring_emit(ring
, MI_NOOP
);
244 intel_ring_advance(ring
);
250 gen6_render_ring_flush(struct intel_engine_cs
*ring
,
251 u32 invalidate_domains
, u32 flush_domains
)
254 u32 scratch_addr
= ring
->scratch
.gtt_offset
+ 2 * CACHELINE_BYTES
;
257 /* Force SNB workarounds for PIPE_CONTROL flushes */
258 ret
= intel_emit_post_sync_nonzero_flush(ring
);
262 /* Just flush everything. Experiments have shown that reducing the
263 * number of bits based on the write domains has little performance
267 flags
|= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH
;
268 flags
|= PIPE_CONTROL_DEPTH_CACHE_FLUSH
;
270 * Ensure that any following seqno writes only happen
271 * when the render cache is indeed flushed.
273 flags
|= PIPE_CONTROL_CS_STALL
;
275 if (invalidate_domains
) {
276 flags
|= PIPE_CONTROL_TLB_INVALIDATE
;
277 flags
|= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE
;
278 flags
|= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE
;
279 flags
|= PIPE_CONTROL_VF_CACHE_INVALIDATE
;
280 flags
|= PIPE_CONTROL_CONST_CACHE_INVALIDATE
;
281 flags
|= PIPE_CONTROL_STATE_CACHE_INVALIDATE
;
283 * TLB invalidate requires a post-sync write.
285 flags
|= PIPE_CONTROL_QW_WRITE
| PIPE_CONTROL_CS_STALL
;
288 ret
= intel_ring_begin(ring
, 4);
292 intel_ring_emit(ring
, GFX_OP_PIPE_CONTROL(4));
293 intel_ring_emit(ring
, flags
);
294 intel_ring_emit(ring
, scratch_addr
| PIPE_CONTROL_GLOBAL_GTT
);
295 intel_ring_emit(ring
, 0);
296 intel_ring_advance(ring
);
302 gen7_render_ring_cs_stall_wa(struct intel_engine_cs
*ring
)
306 ret
= intel_ring_begin(ring
, 4);
310 intel_ring_emit(ring
, GFX_OP_PIPE_CONTROL(4));
311 intel_ring_emit(ring
, PIPE_CONTROL_CS_STALL
|
312 PIPE_CONTROL_STALL_AT_SCOREBOARD
);
313 intel_ring_emit(ring
, 0);
314 intel_ring_emit(ring
, 0);
315 intel_ring_advance(ring
);
320 static int gen7_ring_fbc_flush(struct intel_engine_cs
*ring
, u32 value
)
324 if (!ring
->fbc_dirty
)
327 ret
= intel_ring_begin(ring
, 6);
330 /* WaFbcNukeOn3DBlt:ivb/hsw */
331 intel_ring_emit(ring
, MI_LOAD_REGISTER_IMM(1));
332 intel_ring_emit(ring
, MSG_FBC_REND_STATE
);
333 intel_ring_emit(ring
, value
);
334 intel_ring_emit(ring
, MI_STORE_REGISTER_MEM(1) | MI_SRM_LRM_GLOBAL_GTT
);
335 intel_ring_emit(ring
, MSG_FBC_REND_STATE
);
336 intel_ring_emit(ring
, ring
->scratch
.gtt_offset
+ 256);
337 intel_ring_advance(ring
);
339 ring
->fbc_dirty
= false;
344 gen7_render_ring_flush(struct intel_engine_cs
*ring
,
345 u32 invalidate_domains
, u32 flush_domains
)
348 u32 scratch_addr
= ring
->scratch
.gtt_offset
+ 2 * CACHELINE_BYTES
;
352 * Ensure that any following seqno writes only happen when the render
353 * cache is indeed flushed.
355 * Workaround: 4th PIPE_CONTROL command (except the ones with only
356 * read-cache invalidate bits set) must have the CS_STALL bit set. We
357 * don't try to be clever and just set it unconditionally.
359 flags
|= PIPE_CONTROL_CS_STALL
;
361 /* Just flush everything. Experiments have shown that reducing the
362 * number of bits based on the write domains has little performance
366 flags
|= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH
;
367 flags
|= PIPE_CONTROL_DEPTH_CACHE_FLUSH
;
369 if (invalidate_domains
) {
370 flags
|= PIPE_CONTROL_TLB_INVALIDATE
;
371 flags
|= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE
;
372 flags
|= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE
;
373 flags
|= PIPE_CONTROL_VF_CACHE_INVALIDATE
;
374 flags
|= PIPE_CONTROL_CONST_CACHE_INVALIDATE
;
375 flags
|= PIPE_CONTROL_STATE_CACHE_INVALIDATE
;
376 flags
|= PIPE_CONTROL_MEDIA_STATE_CLEAR
;
378 * TLB invalidate requires a post-sync write.
380 flags
|= PIPE_CONTROL_QW_WRITE
;
381 flags
|= PIPE_CONTROL_GLOBAL_GTT_IVB
;
383 flags
|= PIPE_CONTROL_STALL_AT_SCOREBOARD
;
385 /* Workaround: we must issue a pipe_control with CS-stall bit
386 * set before a pipe_control command that has the state cache
387 * invalidate bit set. */
388 gen7_render_ring_cs_stall_wa(ring
);
391 ret
= intel_ring_begin(ring
, 4);
395 intel_ring_emit(ring
, GFX_OP_PIPE_CONTROL(4));
396 intel_ring_emit(ring
, flags
);
397 intel_ring_emit(ring
, scratch_addr
);
398 intel_ring_emit(ring
, 0);
399 intel_ring_advance(ring
);
401 if (!invalidate_domains
&& flush_domains
)
402 return gen7_ring_fbc_flush(ring
, FBC_REND_NUKE
);
408 gen8_emit_pipe_control(struct intel_engine_cs
*ring
,
409 u32 flags
, u32 scratch_addr
)
413 ret
= intel_ring_begin(ring
, 6);
417 intel_ring_emit(ring
, GFX_OP_PIPE_CONTROL(6));
418 intel_ring_emit(ring
, flags
);
419 intel_ring_emit(ring
, scratch_addr
);
420 intel_ring_emit(ring
, 0);
421 intel_ring_emit(ring
, 0);
422 intel_ring_emit(ring
, 0);
423 intel_ring_advance(ring
);
429 gen8_render_ring_flush(struct intel_engine_cs
*ring
,
430 u32 invalidate_domains
, u32 flush_domains
)
433 u32 scratch_addr
= ring
->scratch
.gtt_offset
+ 2 * CACHELINE_BYTES
;
436 flags
|= PIPE_CONTROL_CS_STALL
;
439 flags
|= PIPE_CONTROL_RENDER_TARGET_CACHE_FLUSH
;
440 flags
|= PIPE_CONTROL_DEPTH_CACHE_FLUSH
;
442 if (invalidate_domains
) {
443 flags
|= PIPE_CONTROL_TLB_INVALIDATE
;
444 flags
|= PIPE_CONTROL_INSTRUCTION_CACHE_INVALIDATE
;
445 flags
|= PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE
;
446 flags
|= PIPE_CONTROL_VF_CACHE_INVALIDATE
;
447 flags
|= PIPE_CONTROL_CONST_CACHE_INVALIDATE
;
448 flags
|= PIPE_CONTROL_STATE_CACHE_INVALIDATE
;
449 flags
|= PIPE_CONTROL_QW_WRITE
;
450 flags
|= PIPE_CONTROL_GLOBAL_GTT_IVB
;
452 /* WaCsStallBeforeStateCacheInvalidate:bdw,chv */
453 ret
= gen8_emit_pipe_control(ring
,
454 PIPE_CONTROL_CS_STALL
|
455 PIPE_CONTROL_STALL_AT_SCOREBOARD
,
461 ret
= gen8_emit_pipe_control(ring
, flags
, scratch_addr
);
465 if (!invalidate_domains
&& flush_domains
)
466 return gen7_ring_fbc_flush(ring
, FBC_REND_NUKE
);
471 static void ring_write_tail(struct intel_engine_cs
*ring
,
474 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
475 I915_WRITE_TAIL(ring
, value
);
478 u64
intel_ring_get_active_head(struct intel_engine_cs
*ring
)
480 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
483 if (INTEL_INFO(ring
->dev
)->gen
>= 8)
484 acthd
= I915_READ64_2x32(RING_ACTHD(ring
->mmio_base
),
485 RING_ACTHD_UDW(ring
->mmio_base
));
486 else if (INTEL_INFO(ring
->dev
)->gen
>= 4)
487 acthd
= I915_READ(RING_ACTHD(ring
->mmio_base
));
489 acthd
= I915_READ(ACTHD
);
494 static void ring_setup_phys_status_page(struct intel_engine_cs
*ring
)
496 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
499 addr
= dev_priv
->status_page_dmah
->busaddr
;
500 if (INTEL_INFO(ring
->dev
)->gen
>= 4)
501 addr
|= (dev_priv
->status_page_dmah
->busaddr
>> 28) & 0xf0;
502 I915_WRITE(HWS_PGA
, addr
);
505 static bool stop_ring(struct intel_engine_cs
*ring
)
507 struct drm_i915_private
*dev_priv
= to_i915(ring
->dev
);
509 if (!IS_GEN2(ring
->dev
)) {
510 I915_WRITE_MODE(ring
, _MASKED_BIT_ENABLE(STOP_RING
));
511 if (wait_for((I915_READ_MODE(ring
) & MODE_IDLE
) != 0, 1000)) {
512 DRM_ERROR("%s : timed out trying to stop ring\n", ring
->name
);
513 /* Sometimes we observe that the idle flag is not
514 * set even though the ring is empty. So double
515 * check before giving up.
517 if (I915_READ_HEAD(ring
) != I915_READ_TAIL(ring
))
522 I915_WRITE_CTL(ring
, 0);
523 I915_WRITE_HEAD(ring
, 0);
524 ring
->write_tail(ring
, 0);
526 if (!IS_GEN2(ring
->dev
)) {
527 (void)I915_READ_CTL(ring
);
528 I915_WRITE_MODE(ring
, _MASKED_BIT_DISABLE(STOP_RING
));
531 return (I915_READ_HEAD(ring
) & HEAD_ADDR
) == 0;
534 static int init_ring_common(struct intel_engine_cs
*ring
)
536 struct drm_device
*dev
= ring
->dev
;
537 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
538 struct intel_ringbuffer
*ringbuf
= ring
->buffer
;
539 struct drm_i915_gem_object
*obj
= ringbuf
->obj
;
542 intel_uncore_forcewake_get(dev_priv
, FORCEWAKE_ALL
);
544 if (!stop_ring(ring
)) {
545 /* G45 ring initialization often fails to reset head to zero */
546 DRM_DEBUG_KMS("%s head not reset to zero "
547 "ctl %08x head %08x tail %08x start %08x\n",
550 I915_READ_HEAD(ring
),
551 I915_READ_TAIL(ring
),
552 I915_READ_START(ring
));
554 if (!stop_ring(ring
)) {
555 DRM_ERROR("failed to set %s head to zero "
556 "ctl %08x head %08x tail %08x start %08x\n",
559 I915_READ_HEAD(ring
),
560 I915_READ_TAIL(ring
),
561 I915_READ_START(ring
));
567 if (I915_NEED_GFX_HWS(dev
))
568 intel_ring_setup_status_page(ring
);
570 ring_setup_phys_status_page(ring
);
572 /* Enforce ordering by reading HEAD register back */
573 I915_READ_HEAD(ring
);
575 /* Initialize the ring. This must happen _after_ we've cleared the ring
576 * registers with the above sequence (the readback of the HEAD registers
577 * also enforces ordering), otherwise the hw might lose the new ring
578 * register values. */
579 I915_WRITE_START(ring
, i915_gem_obj_ggtt_offset(obj
));
581 /* WaClearRingBufHeadRegAtInit:ctg,elk */
582 if (I915_READ_HEAD(ring
))
583 DRM_DEBUG("%s initialization failed [head=%08x], fudging\n",
584 ring
->name
, I915_READ_HEAD(ring
));
585 I915_WRITE_HEAD(ring
, 0);
586 (void)I915_READ_HEAD(ring
);
589 ((ringbuf
->size
- PAGE_SIZE
) & RING_NR_PAGES
)
592 /* If the head is still not zero, the ring is dead */
593 if (wait_for((I915_READ_CTL(ring
) & RING_VALID
) != 0 &&
594 I915_READ_START(ring
) == i915_gem_obj_ggtt_offset(obj
) &&
595 (I915_READ_HEAD(ring
) & HEAD_ADDR
) == 0, 50)) {
596 DRM_ERROR("%s initialization failed "
597 "ctl %08x (valid? %d) head %08x tail %08x start %08x [expected %08lx]\n",
599 I915_READ_CTL(ring
), I915_READ_CTL(ring
) & RING_VALID
,
600 I915_READ_HEAD(ring
), I915_READ_TAIL(ring
),
601 I915_READ_START(ring
), (unsigned long)i915_gem_obj_ggtt_offset(obj
));
606 ringbuf
->last_retired_head
= -1;
607 ringbuf
->head
= I915_READ_HEAD(ring
);
608 ringbuf
->tail
= I915_READ_TAIL(ring
) & TAIL_ADDR
;
609 intel_ring_update_space(ringbuf
);
611 memset(&ring
->hangcheck
, 0, sizeof(ring
->hangcheck
));
614 intel_uncore_forcewake_put(dev_priv
, FORCEWAKE_ALL
);
620 intel_fini_pipe_control(struct intel_engine_cs
*ring
)
622 struct drm_device
*dev
= ring
->dev
;
624 if (ring
->scratch
.obj
== NULL
)
627 if (INTEL_INFO(dev
)->gen
>= 5) {
628 kunmap(sg_page(ring
->scratch
.obj
->pages
->sgl
));
629 i915_gem_object_ggtt_unpin(ring
->scratch
.obj
);
632 drm_gem_object_unreference(&ring
->scratch
.obj
->base
);
633 ring
->scratch
.obj
= NULL
;
637 intel_init_pipe_control(struct intel_engine_cs
*ring
)
641 WARN_ON(ring
->scratch
.obj
);
643 ring
->scratch
.obj
= i915_gem_alloc_object(ring
->dev
, 4096);
644 if (ring
->scratch
.obj
== NULL
) {
645 DRM_ERROR("Failed to allocate seqno page\n");
650 ret
= i915_gem_object_set_cache_level(ring
->scratch
.obj
, I915_CACHE_LLC
);
654 ret
= i915_gem_obj_ggtt_pin(ring
->scratch
.obj
, 4096, 0);
658 ring
->scratch
.gtt_offset
= i915_gem_obj_ggtt_offset(ring
->scratch
.obj
);
659 ring
->scratch
.cpu_page
= kmap(sg_page(ring
->scratch
.obj
->pages
->sgl
));
660 if (ring
->scratch
.cpu_page
== NULL
) {
665 DRM_DEBUG_DRIVER("%s pipe control offset: 0x%08x\n",
666 ring
->name
, ring
->scratch
.gtt_offset
);
670 i915_gem_object_ggtt_unpin(ring
->scratch
.obj
);
672 drm_gem_object_unreference(&ring
->scratch
.obj
->base
);
677 static int intel_ring_workarounds_emit(struct intel_engine_cs
*ring
,
678 struct intel_context
*ctx
)
681 struct drm_device
*dev
= ring
->dev
;
682 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
683 struct i915_workarounds
*w
= &dev_priv
->workarounds
;
685 if (WARN_ON_ONCE(w
->count
== 0))
688 ring
->gpu_caches_dirty
= true;
689 ret
= intel_ring_flush_all_caches(ring
);
693 ret
= intel_ring_begin(ring
, (w
->count
* 2 + 2));
697 intel_ring_emit(ring
, MI_LOAD_REGISTER_IMM(w
->count
));
698 for (i
= 0; i
< w
->count
; i
++) {
699 intel_ring_emit(ring
, w
->reg
[i
].addr
);
700 intel_ring_emit(ring
, w
->reg
[i
].value
);
702 intel_ring_emit(ring
, MI_NOOP
);
704 intel_ring_advance(ring
);
706 ring
->gpu_caches_dirty
= true;
707 ret
= intel_ring_flush_all_caches(ring
);
711 DRM_DEBUG_DRIVER("Number of Workarounds emitted: %d\n", w
->count
);
716 static int intel_rcs_ctx_init(struct intel_engine_cs
*ring
,
717 struct intel_context
*ctx
)
721 ret
= intel_ring_workarounds_emit(ring
, ctx
);
725 ret
= i915_gem_render_state_init(ring
);
727 DRM_ERROR("init render state: %d\n", ret
);
732 static int wa_add(struct drm_i915_private
*dev_priv
,
733 const u32 addr
, const u32 mask
, const u32 val
)
735 const u32 idx
= dev_priv
->workarounds
.count
;
737 if (WARN_ON(idx
>= I915_MAX_WA_REGS
))
740 dev_priv
->workarounds
.reg
[idx
].addr
= addr
;
741 dev_priv
->workarounds
.reg
[idx
].value
= val
;
742 dev_priv
->workarounds
.reg
[idx
].mask
= mask
;
744 dev_priv
->workarounds
.count
++;
749 #define WA_REG(addr, mask, val) { \
750 const int r = wa_add(dev_priv, (addr), (mask), (val)); \
755 #define WA_SET_BIT_MASKED(addr, mask) \
756 WA_REG(addr, (mask), _MASKED_BIT_ENABLE(mask))
758 #define WA_CLR_BIT_MASKED(addr, mask) \
759 WA_REG(addr, (mask), _MASKED_BIT_DISABLE(mask))
761 #define WA_SET_FIELD_MASKED(addr, mask, value) \
762 WA_REG(addr, mask, _MASKED_FIELD(mask, value))
764 #define WA_SET_BIT(addr, mask) WA_REG(addr, mask, I915_READ(addr) | (mask))
765 #define WA_CLR_BIT(addr, mask) WA_REG(addr, mask, I915_READ(addr) & ~(mask))
767 #define WA_WRITE(addr, val) WA_REG(addr, 0xffffffff, val)
769 static int bdw_init_workarounds(struct intel_engine_cs
*ring
)
771 struct drm_device
*dev
= ring
->dev
;
772 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
774 /* WaDisablePartialInstShootdown:bdw */
775 /* WaDisableThreadStallDopClockGating:bdw (pre-production) */
776 WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN
,
777 PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE
|
778 STALL_DOP_GATING_DISABLE
);
780 /* WaDisableDopClockGating:bdw */
781 WA_SET_BIT_MASKED(GEN7_ROW_CHICKEN2
,
782 DOP_CLOCK_GATING_DISABLE
);
784 WA_SET_BIT_MASKED(HALF_SLICE_CHICKEN3
,
785 GEN8_SAMPLER_POWER_BYPASS_DIS
);
787 /* Use Force Non-Coherent whenever executing a 3D context. This is a
788 * workaround for for a possible hang in the unlikely event a TLB
789 * invalidation occurs during a PSD flush.
791 /* WaForceEnableNonCoherent:bdw */
792 /* WaHdcDisableFetchWhenMasked:bdw */
793 /* WaDisableFenceDestinationToSLM:bdw (GT3 pre-production) */
794 WA_SET_BIT_MASKED(HDC_CHICKEN0
,
795 HDC_FORCE_NON_COHERENT
|
796 HDC_DONOT_FETCH_MEM_WHEN_MASKED
|
797 (IS_BDW_GT3(dev
) ? HDC_FENCE_DEST_SLM_DISABLE
: 0));
799 /* From the Haswell PRM, Command Reference: Registers, CACHE_MODE_0:
800 * "The Hierarchical Z RAW Stall Optimization allows non-overlapping
801 * polygons in the same 8x4 pixel/sample area to be processed without
802 * stalling waiting for the earlier ones to write to Hierarchical Z
805 * This optimization is off by default for Broadwell; turn it on.
807 WA_CLR_BIT_MASKED(CACHE_MODE_0_GEN7
, HIZ_RAW_STALL_OPT_DISABLE
);
809 /* Wa4x4STCOptimizationDisable:bdw */
810 WA_SET_BIT_MASKED(CACHE_MODE_1
,
811 GEN8_4x4_STC_OPTIMIZATION_DISABLE
);
814 * BSpec recommends 8x4 when MSAA is used,
815 * however in practice 16x4 seems fastest.
817 * Note that PS/WM thread counts depend on the WIZ hashing
818 * disable bit, which we don't touch here, but it's good
819 * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM).
821 WA_SET_FIELD_MASKED(GEN7_GT_MODE
,
822 GEN6_WIZ_HASHING_MASK
,
823 GEN6_WIZ_HASHING_16x4
);
828 static int chv_init_workarounds(struct intel_engine_cs
*ring
)
830 struct drm_device
*dev
= ring
->dev
;
831 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
833 /* WaDisablePartialInstShootdown:chv */
834 /* WaDisableThreadStallDopClockGating:chv */
835 WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN
,
836 PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE
|
837 STALL_DOP_GATING_DISABLE
);
839 /* Use Force Non-Coherent whenever executing a 3D context. This is a
840 * workaround for a possible hang in the unlikely event a TLB
841 * invalidation occurs during a PSD flush.
843 /* WaForceEnableNonCoherent:chv */
844 /* WaHdcDisableFetchWhenMasked:chv */
845 WA_SET_BIT_MASKED(HDC_CHICKEN0
,
846 HDC_FORCE_NON_COHERENT
|
847 HDC_DONOT_FETCH_MEM_WHEN_MASKED
);
849 /* According to the CACHE_MODE_0 default value documentation, some
850 * CHV platforms disable this optimization by default. Turn it on.
852 WA_CLR_BIT_MASKED(CACHE_MODE_0_GEN7
, HIZ_RAW_STALL_OPT_DISABLE
);
854 /* Wa4x4STCOptimizationDisable:chv */
855 WA_SET_BIT_MASKED(CACHE_MODE_1
,
856 GEN8_4x4_STC_OPTIMIZATION_DISABLE
);
858 /* Improve HiZ throughput on CHV. */
859 WA_SET_BIT_MASKED(HIZ_CHICKEN
, CHV_HZ_8X8_MODE_IN_1X
);
862 * BSpec recommends 8x4 when MSAA is used,
863 * however in practice 16x4 seems fastest.
865 * Note that PS/WM thread counts depend on the WIZ hashing
866 * disable bit, which we don't touch here, but it's good
867 * to keep in mind (see 3DSTATE_PS and 3DSTATE_WM).
869 WA_SET_FIELD_MASKED(GEN7_GT_MODE
,
870 GEN6_WIZ_HASHING_MASK
,
871 GEN6_WIZ_HASHING_16x4
);
876 static int gen9_init_workarounds(struct intel_engine_cs
*ring
)
878 struct drm_device
*dev
= ring
->dev
;
879 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
881 /* WaDisablePartialInstShootdown:skl */
882 WA_SET_BIT_MASKED(GEN8_ROW_CHICKEN
,
883 PARTIAL_INSTRUCTION_SHOOTDOWN_DISABLE
);
888 int init_workarounds_ring(struct intel_engine_cs
*ring
)
890 struct drm_device
*dev
= ring
->dev
;
891 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
893 WARN_ON(ring
->id
!= RCS
);
895 dev_priv
->workarounds
.count
= 0;
897 if (IS_BROADWELL(dev
))
898 return bdw_init_workarounds(ring
);
900 if (IS_CHERRYVIEW(dev
))
901 return chv_init_workarounds(ring
);
904 return gen9_init_workarounds(ring
);
909 static int init_render_ring(struct intel_engine_cs
*ring
)
911 struct drm_device
*dev
= ring
->dev
;
912 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
913 int ret
= init_ring_common(ring
);
917 /* WaTimedSingleVertexDispatch:cl,bw,ctg,elk,ilk,snb */
918 if (INTEL_INFO(dev
)->gen
>= 4 && INTEL_INFO(dev
)->gen
< 7)
919 I915_WRITE(MI_MODE
, _MASKED_BIT_ENABLE(VS_TIMER_DISPATCH
));
921 /* We need to disable the AsyncFlip performance optimisations in order
922 * to use MI_WAIT_FOR_EVENT within the CS. It should already be
923 * programmed to '1' on all products.
925 * WaDisableAsyncFlipPerfMode:snb,ivb,hsw,vlv,bdw,chv
927 if (INTEL_INFO(dev
)->gen
>= 6 && INTEL_INFO(dev
)->gen
< 9)
928 I915_WRITE(MI_MODE
, _MASKED_BIT_ENABLE(ASYNC_FLIP_PERF_DISABLE
));
930 /* Required for the hardware to program scanline values for waiting */
931 /* WaEnableFlushTlbInvalidationMode:snb */
932 if (INTEL_INFO(dev
)->gen
== 6)
934 _MASKED_BIT_ENABLE(GFX_TLB_INVALIDATE_EXPLICIT
));
936 /* WaBCSVCSTlbInvalidationMode:ivb,vlv,hsw */
938 I915_WRITE(GFX_MODE_GEN7
,
939 _MASKED_BIT_ENABLE(GFX_TLB_INVALIDATE_EXPLICIT
) |
940 _MASKED_BIT_ENABLE(GFX_REPLAY_MODE
));
943 /* From the Sandybridge PRM, volume 1 part 3, page 24:
944 * "If this bit is set, STCunit will have LRA as replacement
945 * policy. [...] This bit must be reset. LRA replacement
946 * policy is not supported."
948 I915_WRITE(CACHE_MODE_0
,
949 _MASKED_BIT_DISABLE(CM0_STC_EVICT_DISABLE_LRA_SNB
));
952 if (INTEL_INFO(dev
)->gen
>= 6)
953 I915_WRITE(INSTPM
, _MASKED_BIT_ENABLE(INSTPM_FORCE_ORDERING
));
956 I915_WRITE_IMR(ring
, ~GT_PARITY_ERROR(dev
));
958 return init_workarounds_ring(ring
);
961 static void render_ring_cleanup(struct intel_engine_cs
*ring
)
963 struct drm_device
*dev
= ring
->dev
;
964 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
966 if (dev_priv
->semaphore_obj
) {
967 i915_gem_object_ggtt_unpin(dev_priv
->semaphore_obj
);
968 drm_gem_object_unreference(&dev_priv
->semaphore_obj
->base
);
969 dev_priv
->semaphore_obj
= NULL
;
972 intel_fini_pipe_control(ring
);
975 static int gen8_rcs_signal(struct intel_engine_cs
*signaller
,
976 unsigned int num_dwords
)
978 #define MBOX_UPDATE_DWORDS 8
979 struct drm_device
*dev
= signaller
->dev
;
980 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
981 struct intel_engine_cs
*waiter
;
982 int i
, ret
, num_rings
;
984 num_rings
= hweight32(INTEL_INFO(dev
)->ring_mask
);
985 num_dwords
+= (num_rings
-1) * MBOX_UPDATE_DWORDS
;
986 #undef MBOX_UPDATE_DWORDS
988 ret
= intel_ring_begin(signaller
, num_dwords
);
992 for_each_ring(waiter
, dev_priv
, i
) {
994 u64 gtt_offset
= signaller
->semaphore
.signal_ggtt
[i
];
995 if (gtt_offset
== MI_SEMAPHORE_SYNC_INVALID
)
998 seqno
= i915_gem_request_get_seqno(
999 signaller
->outstanding_lazy_request
);
1000 intel_ring_emit(signaller
, GFX_OP_PIPE_CONTROL(6));
1001 intel_ring_emit(signaller
, PIPE_CONTROL_GLOBAL_GTT_IVB
|
1002 PIPE_CONTROL_QW_WRITE
|
1003 PIPE_CONTROL_FLUSH_ENABLE
);
1004 intel_ring_emit(signaller
, lower_32_bits(gtt_offset
));
1005 intel_ring_emit(signaller
, upper_32_bits(gtt_offset
));
1006 intel_ring_emit(signaller
, seqno
);
1007 intel_ring_emit(signaller
, 0);
1008 intel_ring_emit(signaller
, MI_SEMAPHORE_SIGNAL
|
1009 MI_SEMAPHORE_TARGET(waiter
->id
));
1010 intel_ring_emit(signaller
, 0);
1016 static int gen8_xcs_signal(struct intel_engine_cs
*signaller
,
1017 unsigned int num_dwords
)
1019 #define MBOX_UPDATE_DWORDS 6
1020 struct drm_device
*dev
= signaller
->dev
;
1021 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1022 struct intel_engine_cs
*waiter
;
1023 int i
, ret
, num_rings
;
1025 num_rings
= hweight32(INTEL_INFO(dev
)->ring_mask
);
1026 num_dwords
+= (num_rings
-1) * MBOX_UPDATE_DWORDS
;
1027 #undef MBOX_UPDATE_DWORDS
1029 ret
= intel_ring_begin(signaller
, num_dwords
);
1033 for_each_ring(waiter
, dev_priv
, i
) {
1035 u64 gtt_offset
= signaller
->semaphore
.signal_ggtt
[i
];
1036 if (gtt_offset
== MI_SEMAPHORE_SYNC_INVALID
)
1039 seqno
= i915_gem_request_get_seqno(
1040 signaller
->outstanding_lazy_request
);
1041 intel_ring_emit(signaller
, (MI_FLUSH_DW
+ 1) |
1042 MI_FLUSH_DW_OP_STOREDW
);
1043 intel_ring_emit(signaller
, lower_32_bits(gtt_offset
) |
1044 MI_FLUSH_DW_USE_GTT
);
1045 intel_ring_emit(signaller
, upper_32_bits(gtt_offset
));
1046 intel_ring_emit(signaller
, seqno
);
1047 intel_ring_emit(signaller
, MI_SEMAPHORE_SIGNAL
|
1048 MI_SEMAPHORE_TARGET(waiter
->id
));
1049 intel_ring_emit(signaller
, 0);
1055 static int gen6_signal(struct intel_engine_cs
*signaller
,
1056 unsigned int num_dwords
)
1058 struct drm_device
*dev
= signaller
->dev
;
1059 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1060 struct intel_engine_cs
*useless
;
1061 int i
, ret
, num_rings
;
1063 #define MBOX_UPDATE_DWORDS 3
1064 num_rings
= hweight32(INTEL_INFO(dev
)->ring_mask
);
1065 num_dwords
+= round_up((num_rings
-1) * MBOX_UPDATE_DWORDS
, 2);
1066 #undef MBOX_UPDATE_DWORDS
1068 ret
= intel_ring_begin(signaller
, num_dwords
);
1072 for_each_ring(useless
, dev_priv
, i
) {
1073 u32 mbox_reg
= signaller
->semaphore
.mbox
.signal
[i
];
1074 if (mbox_reg
!= GEN6_NOSYNC
) {
1075 u32 seqno
= i915_gem_request_get_seqno(
1076 signaller
->outstanding_lazy_request
);
1077 intel_ring_emit(signaller
, MI_LOAD_REGISTER_IMM(1));
1078 intel_ring_emit(signaller
, mbox_reg
);
1079 intel_ring_emit(signaller
, seqno
);
1083 /* If num_dwords was rounded, make sure the tail pointer is correct */
1084 if (num_rings
% 2 == 0)
1085 intel_ring_emit(signaller
, MI_NOOP
);
1091 * gen6_add_request - Update the semaphore mailbox registers
1093 * @ring - ring that is adding a request
1094 * @seqno - return seqno stuck into the ring
1096 * Update the mailbox registers in the *other* rings with the current seqno.
1097 * This acts like a signal in the canonical semaphore.
1100 gen6_add_request(struct intel_engine_cs
*ring
)
1104 if (ring
->semaphore
.signal
)
1105 ret
= ring
->semaphore
.signal(ring
, 4);
1107 ret
= intel_ring_begin(ring
, 4);
1112 intel_ring_emit(ring
, MI_STORE_DWORD_INDEX
);
1113 intel_ring_emit(ring
, I915_GEM_HWS_INDEX
<< MI_STORE_DWORD_INDEX_SHIFT
);
1114 intel_ring_emit(ring
,
1115 i915_gem_request_get_seqno(ring
->outstanding_lazy_request
));
1116 intel_ring_emit(ring
, MI_USER_INTERRUPT
);
1117 __intel_ring_advance(ring
);
1122 static inline bool i915_gem_has_seqno_wrapped(struct drm_device
*dev
,
1125 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1126 return dev_priv
->last_seqno
< seqno
;
1130 * intel_ring_sync - sync the waiter to the signaller on seqno
1132 * @waiter - ring that is waiting
1133 * @signaller - ring which has, or will signal
1134 * @seqno - seqno which the waiter will block on
1138 gen8_ring_sync(struct intel_engine_cs
*waiter
,
1139 struct intel_engine_cs
*signaller
,
1142 struct drm_i915_private
*dev_priv
= waiter
->dev
->dev_private
;
1145 ret
= intel_ring_begin(waiter
, 4);
1149 intel_ring_emit(waiter
, MI_SEMAPHORE_WAIT
|
1150 MI_SEMAPHORE_GLOBAL_GTT
|
1152 MI_SEMAPHORE_SAD_GTE_SDD
);
1153 intel_ring_emit(waiter
, seqno
);
1154 intel_ring_emit(waiter
,
1155 lower_32_bits(GEN8_WAIT_OFFSET(waiter
, signaller
->id
)));
1156 intel_ring_emit(waiter
,
1157 upper_32_bits(GEN8_WAIT_OFFSET(waiter
, signaller
->id
)));
1158 intel_ring_advance(waiter
);
1163 gen6_ring_sync(struct intel_engine_cs
*waiter
,
1164 struct intel_engine_cs
*signaller
,
1167 u32 dw1
= MI_SEMAPHORE_MBOX
|
1168 MI_SEMAPHORE_COMPARE
|
1169 MI_SEMAPHORE_REGISTER
;
1170 u32 wait_mbox
= signaller
->semaphore
.mbox
.wait
[waiter
->id
];
1173 /* Throughout all of the GEM code, seqno passed implies our current
1174 * seqno is >= the last seqno executed. However for hardware the
1175 * comparison is strictly greater than.
1179 WARN_ON(wait_mbox
== MI_SEMAPHORE_SYNC_INVALID
);
1181 ret
= intel_ring_begin(waiter
, 4);
1185 /* If seqno wrap happened, omit the wait with no-ops */
1186 if (likely(!i915_gem_has_seqno_wrapped(waiter
->dev
, seqno
))) {
1187 intel_ring_emit(waiter
, dw1
| wait_mbox
);
1188 intel_ring_emit(waiter
, seqno
);
1189 intel_ring_emit(waiter
, 0);
1190 intel_ring_emit(waiter
, MI_NOOP
);
1192 intel_ring_emit(waiter
, MI_NOOP
);
1193 intel_ring_emit(waiter
, MI_NOOP
);
1194 intel_ring_emit(waiter
, MI_NOOP
);
1195 intel_ring_emit(waiter
, MI_NOOP
);
1197 intel_ring_advance(waiter
);
1202 #define PIPE_CONTROL_FLUSH(ring__, addr__) \
1204 intel_ring_emit(ring__, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE | \
1205 PIPE_CONTROL_DEPTH_STALL); \
1206 intel_ring_emit(ring__, (addr__) | PIPE_CONTROL_GLOBAL_GTT); \
1207 intel_ring_emit(ring__, 0); \
1208 intel_ring_emit(ring__, 0); \
1212 pc_render_add_request(struct intel_engine_cs
*ring
)
1214 u32 scratch_addr
= ring
->scratch
.gtt_offset
+ 2 * CACHELINE_BYTES
;
1217 /* For Ironlake, MI_USER_INTERRUPT was deprecated and apparently
1218 * incoherent with writes to memory, i.e. completely fubar,
1219 * so we need to use PIPE_NOTIFY instead.
1221 * However, we also need to workaround the qword write
1222 * incoherence by flushing the 6 PIPE_NOTIFY buffers out to
1223 * memory before requesting an interrupt.
1225 ret
= intel_ring_begin(ring
, 32);
1229 intel_ring_emit(ring
, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE
|
1230 PIPE_CONTROL_WRITE_FLUSH
|
1231 PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE
);
1232 intel_ring_emit(ring
, ring
->scratch
.gtt_offset
| PIPE_CONTROL_GLOBAL_GTT
);
1233 intel_ring_emit(ring
,
1234 i915_gem_request_get_seqno(ring
->outstanding_lazy_request
));
1235 intel_ring_emit(ring
, 0);
1236 PIPE_CONTROL_FLUSH(ring
, scratch_addr
);
1237 scratch_addr
+= 2 * CACHELINE_BYTES
; /* write to separate cachelines */
1238 PIPE_CONTROL_FLUSH(ring
, scratch_addr
);
1239 scratch_addr
+= 2 * CACHELINE_BYTES
;
1240 PIPE_CONTROL_FLUSH(ring
, scratch_addr
);
1241 scratch_addr
+= 2 * CACHELINE_BYTES
;
1242 PIPE_CONTROL_FLUSH(ring
, scratch_addr
);
1243 scratch_addr
+= 2 * CACHELINE_BYTES
;
1244 PIPE_CONTROL_FLUSH(ring
, scratch_addr
);
1245 scratch_addr
+= 2 * CACHELINE_BYTES
;
1246 PIPE_CONTROL_FLUSH(ring
, scratch_addr
);
1248 intel_ring_emit(ring
, GFX_OP_PIPE_CONTROL(4) | PIPE_CONTROL_QW_WRITE
|
1249 PIPE_CONTROL_WRITE_FLUSH
|
1250 PIPE_CONTROL_TEXTURE_CACHE_INVALIDATE
|
1251 PIPE_CONTROL_NOTIFY
);
1252 intel_ring_emit(ring
, ring
->scratch
.gtt_offset
| PIPE_CONTROL_GLOBAL_GTT
);
1253 intel_ring_emit(ring
,
1254 i915_gem_request_get_seqno(ring
->outstanding_lazy_request
));
1255 intel_ring_emit(ring
, 0);
1256 __intel_ring_advance(ring
);
1262 gen6_ring_get_seqno(struct intel_engine_cs
*ring
, bool lazy_coherency
)
1264 /* Workaround to force correct ordering between irq and seqno writes on
1265 * ivb (and maybe also on snb) by reading from a CS register (like
1266 * ACTHD) before reading the status page. */
1267 if (!lazy_coherency
) {
1268 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
1269 POSTING_READ(RING_ACTHD(ring
->mmio_base
));
1272 return intel_read_status_page(ring
, I915_GEM_HWS_INDEX
);
1276 ring_get_seqno(struct intel_engine_cs
*ring
, bool lazy_coherency
)
1278 return intel_read_status_page(ring
, I915_GEM_HWS_INDEX
);
1282 ring_set_seqno(struct intel_engine_cs
*ring
, u32 seqno
)
1284 intel_write_status_page(ring
, I915_GEM_HWS_INDEX
, seqno
);
1288 pc_render_get_seqno(struct intel_engine_cs
*ring
, bool lazy_coherency
)
1290 return ring
->scratch
.cpu_page
[0];
1294 pc_render_set_seqno(struct intel_engine_cs
*ring
, u32 seqno
)
1296 ring
->scratch
.cpu_page
[0] = seqno
;
1300 gen5_ring_get_irq(struct intel_engine_cs
*ring
)
1302 struct drm_device
*dev
= ring
->dev
;
1303 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1304 unsigned long flags
;
1306 if (WARN_ON(!intel_irqs_enabled(dev_priv
)))
1309 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1310 if (ring
->irq_refcount
++ == 0)
1311 gen5_enable_gt_irq(dev_priv
, ring
->irq_enable_mask
);
1312 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1318 gen5_ring_put_irq(struct intel_engine_cs
*ring
)
1320 struct drm_device
*dev
= ring
->dev
;
1321 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1322 unsigned long flags
;
1324 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1325 if (--ring
->irq_refcount
== 0)
1326 gen5_disable_gt_irq(dev_priv
, ring
->irq_enable_mask
);
1327 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1331 i9xx_ring_get_irq(struct intel_engine_cs
*ring
)
1333 struct drm_device
*dev
= ring
->dev
;
1334 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1335 unsigned long flags
;
1337 if (!intel_irqs_enabled(dev_priv
))
1340 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1341 if (ring
->irq_refcount
++ == 0) {
1342 dev_priv
->irq_mask
&= ~ring
->irq_enable_mask
;
1343 I915_WRITE(IMR
, dev_priv
->irq_mask
);
1346 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1352 i9xx_ring_put_irq(struct intel_engine_cs
*ring
)
1354 struct drm_device
*dev
= ring
->dev
;
1355 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1356 unsigned long flags
;
1358 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1359 if (--ring
->irq_refcount
== 0) {
1360 dev_priv
->irq_mask
|= ring
->irq_enable_mask
;
1361 I915_WRITE(IMR
, dev_priv
->irq_mask
);
1364 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1368 i8xx_ring_get_irq(struct intel_engine_cs
*ring
)
1370 struct drm_device
*dev
= ring
->dev
;
1371 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1372 unsigned long flags
;
1374 if (!intel_irqs_enabled(dev_priv
))
1377 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1378 if (ring
->irq_refcount
++ == 0) {
1379 dev_priv
->irq_mask
&= ~ring
->irq_enable_mask
;
1380 I915_WRITE16(IMR
, dev_priv
->irq_mask
);
1381 POSTING_READ16(IMR
);
1383 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1389 i8xx_ring_put_irq(struct intel_engine_cs
*ring
)
1391 struct drm_device
*dev
= ring
->dev
;
1392 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1393 unsigned long flags
;
1395 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1396 if (--ring
->irq_refcount
== 0) {
1397 dev_priv
->irq_mask
|= ring
->irq_enable_mask
;
1398 I915_WRITE16(IMR
, dev_priv
->irq_mask
);
1399 POSTING_READ16(IMR
);
1401 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1404 void intel_ring_setup_status_page(struct intel_engine_cs
*ring
)
1406 struct drm_device
*dev
= ring
->dev
;
1407 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
1410 /* The ring status page addresses are no longer next to the rest of
1411 * the ring registers as of gen7.
1416 mmio
= RENDER_HWS_PGA_GEN7
;
1419 mmio
= BLT_HWS_PGA_GEN7
;
1422 * VCS2 actually doesn't exist on Gen7. Only shut up
1423 * gcc switch check warning
1427 mmio
= BSD_HWS_PGA_GEN7
;
1430 mmio
= VEBOX_HWS_PGA_GEN7
;
1433 } else if (IS_GEN6(ring
->dev
)) {
1434 mmio
= RING_HWS_PGA_GEN6(ring
->mmio_base
);
1436 /* XXX: gen8 returns to sanity */
1437 mmio
= RING_HWS_PGA(ring
->mmio_base
);
1440 I915_WRITE(mmio
, (u32
)ring
->status_page
.gfx_addr
);
1444 * Flush the TLB for this page
1446 * FIXME: These two bits have disappeared on gen8, so a question
1447 * arises: do we still need this and if so how should we go about
1448 * invalidating the TLB?
1450 if (INTEL_INFO(dev
)->gen
>= 6 && INTEL_INFO(dev
)->gen
< 8) {
1451 u32 reg
= RING_INSTPM(ring
->mmio_base
);
1453 /* ring should be idle before issuing a sync flush*/
1454 WARN_ON((I915_READ_MODE(ring
) & MODE_IDLE
) == 0);
1457 _MASKED_BIT_ENABLE(INSTPM_TLB_INVALIDATE
|
1458 INSTPM_SYNC_FLUSH
));
1459 if (wait_for((I915_READ(reg
) & INSTPM_SYNC_FLUSH
) == 0,
1461 DRM_ERROR("%s: wait for SyncFlush to complete for TLB invalidation timed out\n",
1467 bsd_ring_flush(struct intel_engine_cs
*ring
,
1468 u32 invalidate_domains
,
1473 ret
= intel_ring_begin(ring
, 2);
1477 intel_ring_emit(ring
, MI_FLUSH
);
1478 intel_ring_emit(ring
, MI_NOOP
);
1479 intel_ring_advance(ring
);
1484 i9xx_add_request(struct intel_engine_cs
*ring
)
1488 ret
= intel_ring_begin(ring
, 4);
1492 intel_ring_emit(ring
, MI_STORE_DWORD_INDEX
);
1493 intel_ring_emit(ring
, I915_GEM_HWS_INDEX
<< MI_STORE_DWORD_INDEX_SHIFT
);
1494 intel_ring_emit(ring
,
1495 i915_gem_request_get_seqno(ring
->outstanding_lazy_request
));
1496 intel_ring_emit(ring
, MI_USER_INTERRUPT
);
1497 __intel_ring_advance(ring
);
1503 gen6_ring_get_irq(struct intel_engine_cs
*ring
)
1505 struct drm_device
*dev
= ring
->dev
;
1506 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1507 unsigned long flags
;
1509 if (WARN_ON(!intel_irqs_enabled(dev_priv
)))
1512 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1513 if (ring
->irq_refcount
++ == 0) {
1514 if (HAS_L3_DPF(dev
) && ring
->id
== RCS
)
1515 I915_WRITE_IMR(ring
,
1516 ~(ring
->irq_enable_mask
|
1517 GT_PARITY_ERROR(dev
)));
1519 I915_WRITE_IMR(ring
, ~ring
->irq_enable_mask
);
1520 gen5_enable_gt_irq(dev_priv
, ring
->irq_enable_mask
);
1522 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1528 gen6_ring_put_irq(struct intel_engine_cs
*ring
)
1530 struct drm_device
*dev
= ring
->dev
;
1531 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1532 unsigned long flags
;
1534 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1535 if (--ring
->irq_refcount
== 0) {
1536 if (HAS_L3_DPF(dev
) && ring
->id
== RCS
)
1537 I915_WRITE_IMR(ring
, ~GT_PARITY_ERROR(dev
));
1539 I915_WRITE_IMR(ring
, ~0);
1540 gen5_disable_gt_irq(dev_priv
, ring
->irq_enable_mask
);
1542 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1546 hsw_vebox_get_irq(struct intel_engine_cs
*ring
)
1548 struct drm_device
*dev
= ring
->dev
;
1549 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1550 unsigned long flags
;
1552 if (WARN_ON(!intel_irqs_enabled(dev_priv
)))
1555 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1556 if (ring
->irq_refcount
++ == 0) {
1557 I915_WRITE_IMR(ring
, ~ring
->irq_enable_mask
);
1558 gen6_enable_pm_irq(dev_priv
, ring
->irq_enable_mask
);
1560 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1566 hsw_vebox_put_irq(struct intel_engine_cs
*ring
)
1568 struct drm_device
*dev
= ring
->dev
;
1569 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1570 unsigned long flags
;
1572 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1573 if (--ring
->irq_refcount
== 0) {
1574 I915_WRITE_IMR(ring
, ~0);
1575 gen6_disable_pm_irq(dev_priv
, ring
->irq_enable_mask
);
1577 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1581 gen8_ring_get_irq(struct intel_engine_cs
*ring
)
1583 struct drm_device
*dev
= ring
->dev
;
1584 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1585 unsigned long flags
;
1587 if (WARN_ON(!intel_irqs_enabled(dev_priv
)))
1590 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1591 if (ring
->irq_refcount
++ == 0) {
1592 if (HAS_L3_DPF(dev
) && ring
->id
== RCS
) {
1593 I915_WRITE_IMR(ring
,
1594 ~(ring
->irq_enable_mask
|
1595 GT_RENDER_L3_PARITY_ERROR_INTERRUPT
));
1597 I915_WRITE_IMR(ring
, ~ring
->irq_enable_mask
);
1599 POSTING_READ(RING_IMR(ring
->mmio_base
));
1601 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1607 gen8_ring_put_irq(struct intel_engine_cs
*ring
)
1609 struct drm_device
*dev
= ring
->dev
;
1610 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
1611 unsigned long flags
;
1613 spin_lock_irqsave(&dev_priv
->irq_lock
, flags
);
1614 if (--ring
->irq_refcount
== 0) {
1615 if (HAS_L3_DPF(dev
) && ring
->id
== RCS
) {
1616 I915_WRITE_IMR(ring
,
1617 ~GT_RENDER_L3_PARITY_ERROR_INTERRUPT
);
1619 I915_WRITE_IMR(ring
, ~0);
1621 POSTING_READ(RING_IMR(ring
->mmio_base
));
1623 spin_unlock_irqrestore(&dev_priv
->irq_lock
, flags
);
1627 i965_dispatch_execbuffer(struct intel_engine_cs
*ring
,
1628 u64 offset
, u32 length
,
1633 ret
= intel_ring_begin(ring
, 2);
1637 intel_ring_emit(ring
,
1638 MI_BATCH_BUFFER_START
|
1640 (flags
& I915_DISPATCH_SECURE
? 0 : MI_BATCH_NON_SECURE_I965
));
1641 intel_ring_emit(ring
, offset
);
1642 intel_ring_advance(ring
);
1647 /* Just userspace ABI convention to limit the wa batch bo to a resonable size */
1648 #define I830_BATCH_LIMIT (256*1024)
1649 #define I830_TLB_ENTRIES (2)
1650 #define I830_WA_SIZE max(I830_TLB_ENTRIES*4096, I830_BATCH_LIMIT)
1652 i830_dispatch_execbuffer(struct intel_engine_cs
*ring
,
1653 u64 offset
, u32 len
,
1656 u32 cs_offset
= ring
->scratch
.gtt_offset
;
1659 ret
= intel_ring_begin(ring
, 6);
1663 /* Evict the invalid PTE TLBs */
1664 intel_ring_emit(ring
, COLOR_BLT_CMD
| BLT_WRITE_RGBA
);
1665 intel_ring_emit(ring
, BLT_DEPTH_32
| BLT_ROP_COLOR_COPY
| 4096);
1666 intel_ring_emit(ring
, I830_TLB_ENTRIES
<< 16 | 4); /* load each page */
1667 intel_ring_emit(ring
, cs_offset
);
1668 intel_ring_emit(ring
, 0xdeadbeef);
1669 intel_ring_emit(ring
, MI_NOOP
);
1670 intel_ring_advance(ring
);
1672 if ((flags
& I915_DISPATCH_PINNED
) == 0) {
1673 if (len
> I830_BATCH_LIMIT
)
1676 ret
= intel_ring_begin(ring
, 6 + 2);
1680 /* Blit the batch (which has now all relocs applied) to the
1681 * stable batch scratch bo area (so that the CS never
1682 * stumbles over its tlb invalidation bug) ...
1684 intel_ring_emit(ring
, SRC_COPY_BLT_CMD
| BLT_WRITE_RGBA
);
1685 intel_ring_emit(ring
, BLT_DEPTH_32
| BLT_ROP_SRC_COPY
| 4096);
1686 intel_ring_emit(ring
, DIV_ROUND_UP(len
, 4096) << 16 | 4096);
1687 intel_ring_emit(ring
, cs_offset
);
1688 intel_ring_emit(ring
, 4096);
1689 intel_ring_emit(ring
, offset
);
1691 intel_ring_emit(ring
, MI_FLUSH
);
1692 intel_ring_emit(ring
, MI_NOOP
);
1693 intel_ring_advance(ring
);
1695 /* ... and execute it. */
1699 ret
= intel_ring_begin(ring
, 4);
1703 intel_ring_emit(ring
, MI_BATCH_BUFFER
);
1704 intel_ring_emit(ring
, offset
| (flags
& I915_DISPATCH_SECURE
? 0 : MI_BATCH_NON_SECURE
));
1705 intel_ring_emit(ring
, offset
+ len
- 8);
1706 intel_ring_emit(ring
, MI_NOOP
);
1707 intel_ring_advance(ring
);
1713 i915_dispatch_execbuffer(struct intel_engine_cs
*ring
,
1714 u64 offset
, u32 len
,
1719 ret
= intel_ring_begin(ring
, 2);
1723 intel_ring_emit(ring
, MI_BATCH_BUFFER_START
| MI_BATCH_GTT
);
1724 intel_ring_emit(ring
, offset
| (flags
& I915_DISPATCH_SECURE
? 0 : MI_BATCH_NON_SECURE
));
1725 intel_ring_advance(ring
);
1730 static void cleanup_status_page(struct intel_engine_cs
*ring
)
1732 struct drm_i915_gem_object
*obj
;
1734 obj
= ring
->status_page
.obj
;
1738 kunmap(sg_page(obj
->pages
->sgl
));
1739 i915_gem_object_ggtt_unpin(obj
);
1740 drm_gem_object_unreference(&obj
->base
);
1741 ring
->status_page
.obj
= NULL
;
1744 static int init_status_page(struct intel_engine_cs
*ring
)
1746 struct drm_i915_gem_object
*obj
;
1748 if ((obj
= ring
->status_page
.obj
) == NULL
) {
1752 obj
= i915_gem_alloc_object(ring
->dev
, 4096);
1754 DRM_ERROR("Failed to allocate status page\n");
1758 ret
= i915_gem_object_set_cache_level(obj
, I915_CACHE_LLC
);
1763 if (!HAS_LLC(ring
->dev
))
1764 /* On g33, we cannot place HWS above 256MiB, so
1765 * restrict its pinning to the low mappable arena.
1766 * Though this restriction is not documented for
1767 * gen4, gen5, or byt, they also behave similarly
1768 * and hang if the HWS is placed at the top of the
1769 * GTT. To generalise, it appears that all !llc
1770 * platforms have issues with us placing the HWS
1771 * above the mappable region (even though we never
1774 flags
|= PIN_MAPPABLE
;
1775 ret
= i915_gem_obj_ggtt_pin(obj
, 4096, flags
);
1778 drm_gem_object_unreference(&obj
->base
);
1782 ring
->status_page
.obj
= obj
;
1785 ring
->status_page
.gfx_addr
= i915_gem_obj_ggtt_offset(obj
);
1786 ring
->status_page
.page_addr
= kmap(sg_page(obj
->pages
->sgl
));
1787 memset(ring
->status_page
.page_addr
, 0, PAGE_SIZE
);
1789 DRM_DEBUG_DRIVER("%s hws offset: 0x%08x\n",
1790 ring
->name
, ring
->status_page
.gfx_addr
);
1795 static int init_phys_status_page(struct intel_engine_cs
*ring
)
1797 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
1799 if (!dev_priv
->status_page_dmah
) {
1800 dev_priv
->status_page_dmah
=
1801 drm_pci_alloc(ring
->dev
, PAGE_SIZE
, PAGE_SIZE
);
1802 if (!dev_priv
->status_page_dmah
)
1806 ring
->status_page
.page_addr
= dev_priv
->status_page_dmah
->vaddr
;
1807 memset(ring
->status_page
.page_addr
, 0, PAGE_SIZE
);
1812 void intel_unpin_ringbuffer_obj(struct intel_ringbuffer
*ringbuf
)
1814 iounmap(ringbuf
->virtual_start
);
1815 ringbuf
->virtual_start
= NULL
;
1816 i915_gem_object_ggtt_unpin(ringbuf
->obj
);
1819 int intel_pin_and_map_ringbuffer_obj(struct drm_device
*dev
,
1820 struct intel_ringbuffer
*ringbuf
)
1822 struct drm_i915_private
*dev_priv
= to_i915(dev
);
1823 struct drm_i915_gem_object
*obj
= ringbuf
->obj
;
1826 ret
= i915_gem_obj_ggtt_pin(obj
, PAGE_SIZE
, PIN_MAPPABLE
);
1830 ret
= i915_gem_object_set_to_gtt_domain(obj
, true);
1832 i915_gem_object_ggtt_unpin(obj
);
1836 ringbuf
->virtual_start
= ioremap_wc(dev_priv
->gtt
.mappable_base
+
1837 i915_gem_obj_ggtt_offset(obj
), ringbuf
->size
);
1838 if (ringbuf
->virtual_start
== NULL
) {
1839 i915_gem_object_ggtt_unpin(obj
);
1846 void intel_destroy_ringbuffer_obj(struct intel_ringbuffer
*ringbuf
)
1848 drm_gem_object_unreference(&ringbuf
->obj
->base
);
1849 ringbuf
->obj
= NULL
;
1852 int intel_alloc_ringbuffer_obj(struct drm_device
*dev
,
1853 struct intel_ringbuffer
*ringbuf
)
1855 struct drm_i915_gem_object
*obj
;
1859 obj
= i915_gem_object_create_stolen(dev
, ringbuf
->size
);
1861 obj
= i915_gem_alloc_object(dev
, ringbuf
->size
);
1865 /* mark ring buffers as read-only from GPU side by default */
1873 static int intel_init_ring_buffer(struct drm_device
*dev
,
1874 struct intel_engine_cs
*ring
)
1876 struct intel_ringbuffer
*ringbuf
;
1879 WARN_ON(ring
->buffer
);
1881 ringbuf
= kzalloc(sizeof(*ringbuf
), GFP_KERNEL
);
1884 ring
->buffer
= ringbuf
;
1887 INIT_LIST_HEAD(&ring
->active_list
);
1888 INIT_LIST_HEAD(&ring
->request_list
);
1889 INIT_LIST_HEAD(&ring
->execlist_queue
);
1890 ringbuf
->size
= 32 * PAGE_SIZE
;
1891 ringbuf
->ring
= ring
;
1892 memset(ring
->semaphore
.sync_seqno
, 0, sizeof(ring
->semaphore
.sync_seqno
));
1894 init_waitqueue_head(&ring
->irq_queue
);
1896 if (I915_NEED_GFX_HWS(dev
)) {
1897 ret
= init_status_page(ring
);
1901 BUG_ON(ring
->id
!= RCS
);
1902 ret
= init_phys_status_page(ring
);
1907 WARN_ON(ringbuf
->obj
);
1909 ret
= intel_alloc_ringbuffer_obj(dev
, ringbuf
);
1911 DRM_ERROR("Failed to allocate ringbuffer %s: %d\n",
1916 ret
= intel_pin_and_map_ringbuffer_obj(dev
, ringbuf
);
1918 DRM_ERROR("Failed to pin and map ringbuffer %s: %d\n",
1920 intel_destroy_ringbuffer_obj(ringbuf
);
1924 /* Workaround an erratum on the i830 which causes a hang if
1925 * the TAIL pointer points to within the last 2 cachelines
1928 ringbuf
->effective_size
= ringbuf
->size
;
1929 if (IS_I830(dev
) || IS_845G(dev
))
1930 ringbuf
->effective_size
-= 2 * CACHELINE_BYTES
;
1932 ret
= i915_cmd_parser_init_ring(ring
);
1940 ring
->buffer
= NULL
;
1944 void intel_cleanup_ring_buffer(struct intel_engine_cs
*ring
)
1946 struct drm_i915_private
*dev_priv
;
1947 struct intel_ringbuffer
*ringbuf
;
1949 if (!intel_ring_initialized(ring
))
1952 dev_priv
= to_i915(ring
->dev
);
1953 ringbuf
= ring
->buffer
;
1955 intel_stop_ring_buffer(ring
);
1956 WARN_ON(!IS_GEN2(ring
->dev
) && (I915_READ_MODE(ring
) & MODE_IDLE
) == 0);
1958 intel_unpin_ringbuffer_obj(ringbuf
);
1959 intel_destroy_ringbuffer_obj(ringbuf
);
1960 i915_gem_request_assign(&ring
->outstanding_lazy_request
, NULL
);
1963 ring
->cleanup(ring
);
1965 cleanup_status_page(ring
);
1967 i915_cmd_parser_fini_ring(ring
);
1970 ring
->buffer
= NULL
;
1973 static int intel_ring_wait_request(struct intel_engine_cs
*ring
, int n
)
1975 struct intel_ringbuffer
*ringbuf
= ring
->buffer
;
1976 struct drm_i915_gem_request
*request
;
1979 if (intel_ring_space(ringbuf
) >= n
)
1982 list_for_each_entry(request
, &ring
->request_list
, list
) {
1983 if (__intel_ring_space(request
->postfix
, ringbuf
->tail
,
1984 ringbuf
->size
) >= n
) {
1989 if (&request
->list
== &ring
->request_list
)
1992 ret
= i915_wait_request(request
);
1996 i915_gem_retire_requests_ring(ring
);
2001 static int ring_wait_for_space(struct intel_engine_cs
*ring
, int n
)
2003 struct drm_device
*dev
= ring
->dev
;
2004 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2005 struct intel_ringbuffer
*ringbuf
= ring
->buffer
;
2009 ret
= intel_ring_wait_request(ring
, n
);
2013 /* force the tail write in case we have been skipping them */
2014 __intel_ring_advance(ring
);
2016 /* With GEM the hangcheck timer should kick us out of the loop,
2017 * leaving it early runs the risk of corrupting GEM state (due
2018 * to running on almost untested codepaths). But on resume
2019 * timers don't work yet, so prevent a complete hang in that
2020 * case by choosing an insanely large timeout. */
2021 end
= jiffies
+ 60 * HZ
;
2024 trace_i915_ring_wait_begin(ring
);
2026 if (intel_ring_space(ringbuf
) >= n
)
2028 ringbuf
->head
= I915_READ_HEAD(ring
);
2029 if (intel_ring_space(ringbuf
) >= n
)
2034 if (dev_priv
->mm
.interruptible
&& signal_pending(current
)) {
2039 ret
= i915_gem_check_wedge(&dev_priv
->gpu_error
,
2040 dev_priv
->mm
.interruptible
);
2044 if (time_after(jiffies
, end
)) {
2049 trace_i915_ring_wait_end(ring
);
2053 static int intel_wrap_ring_buffer(struct intel_engine_cs
*ring
)
2055 uint32_t __iomem
*virt
;
2056 struct intel_ringbuffer
*ringbuf
= ring
->buffer
;
2057 int rem
= ringbuf
->size
- ringbuf
->tail
;
2059 if (ringbuf
->space
< rem
) {
2060 int ret
= ring_wait_for_space(ring
, rem
);
2065 virt
= ringbuf
->virtual_start
+ ringbuf
->tail
;
2068 iowrite32(MI_NOOP
, virt
++);
2071 intel_ring_update_space(ringbuf
);
2076 int intel_ring_idle(struct intel_engine_cs
*ring
)
2078 struct drm_i915_gem_request
*req
;
2081 /* We need to add any requests required to flush the objects and ring */
2082 if (ring
->outstanding_lazy_request
) {
2083 ret
= i915_add_request(ring
);
2088 /* Wait upon the last request to be completed */
2089 if (list_empty(&ring
->request_list
))
2092 req
= list_entry(ring
->request_list
.prev
,
2093 struct drm_i915_gem_request
,
2096 return i915_wait_request(req
);
2100 intel_ring_alloc_request(struct intel_engine_cs
*ring
)
2103 struct drm_i915_gem_request
*request
;
2104 struct drm_i915_private
*dev_private
= ring
->dev
->dev_private
;
2106 if (ring
->outstanding_lazy_request
)
2109 request
= kzalloc(sizeof(*request
), GFP_KERNEL
);
2110 if (request
== NULL
)
2113 kref_init(&request
->ref
);
2114 request
->ring
= ring
;
2115 request
->uniq
= dev_private
->request_uniq
++;
2117 ret
= i915_gem_get_seqno(ring
->dev
, &request
->seqno
);
2123 ring
->outstanding_lazy_request
= request
;
2127 static int __intel_ring_prepare(struct intel_engine_cs
*ring
,
2130 struct intel_ringbuffer
*ringbuf
= ring
->buffer
;
2133 if (unlikely(ringbuf
->tail
+ bytes
> ringbuf
->effective_size
)) {
2134 ret
= intel_wrap_ring_buffer(ring
);
2139 if (unlikely(ringbuf
->space
< bytes
)) {
2140 ret
= ring_wait_for_space(ring
, bytes
);
2148 int intel_ring_begin(struct intel_engine_cs
*ring
,
2151 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
2154 ret
= i915_gem_check_wedge(&dev_priv
->gpu_error
,
2155 dev_priv
->mm
.interruptible
);
2159 ret
= __intel_ring_prepare(ring
, num_dwords
* sizeof(uint32_t));
2163 /* Preallocate the olr before touching the ring */
2164 ret
= intel_ring_alloc_request(ring
);
2168 ring
->buffer
->space
-= num_dwords
* sizeof(uint32_t);
2172 /* Align the ring tail to a cacheline boundary */
2173 int intel_ring_cacheline_align(struct intel_engine_cs
*ring
)
2175 int num_dwords
= (ring
->buffer
->tail
& (CACHELINE_BYTES
- 1)) / sizeof(uint32_t);
2178 if (num_dwords
== 0)
2181 num_dwords
= CACHELINE_BYTES
/ sizeof(uint32_t) - num_dwords
;
2182 ret
= intel_ring_begin(ring
, num_dwords
);
2186 while (num_dwords
--)
2187 intel_ring_emit(ring
, MI_NOOP
);
2189 intel_ring_advance(ring
);
2194 void intel_ring_init_seqno(struct intel_engine_cs
*ring
, u32 seqno
)
2196 struct drm_device
*dev
= ring
->dev
;
2197 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2199 BUG_ON(ring
->outstanding_lazy_request
);
2201 if (INTEL_INFO(dev
)->gen
== 6 || INTEL_INFO(dev
)->gen
== 7) {
2202 I915_WRITE(RING_SYNC_0(ring
->mmio_base
), 0);
2203 I915_WRITE(RING_SYNC_1(ring
->mmio_base
), 0);
2205 I915_WRITE(RING_SYNC_2(ring
->mmio_base
), 0);
2208 ring
->set_seqno(ring
, seqno
);
2209 ring
->hangcheck
.seqno
= seqno
;
2212 static void gen6_bsd_ring_write_tail(struct intel_engine_cs
*ring
,
2215 struct drm_i915_private
*dev_priv
= ring
->dev
->dev_private
;
2217 /* Every tail move must follow the sequence below */
2219 /* Disable notification that the ring is IDLE. The GT
2220 * will then assume that it is busy and bring it out of rc6.
2222 I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL
,
2223 _MASKED_BIT_ENABLE(GEN6_BSD_SLEEP_MSG_DISABLE
));
2225 /* Clear the context id. Here be magic! */
2226 I915_WRITE64(GEN6_BSD_RNCID
, 0x0);
2228 /* Wait for the ring not to be idle, i.e. for it to wake up. */
2229 if (wait_for((I915_READ(GEN6_BSD_SLEEP_PSMI_CONTROL
) &
2230 GEN6_BSD_SLEEP_INDICATOR
) == 0,
2232 DRM_ERROR("timed out waiting for the BSD ring to wake up\n");
2234 /* Now that the ring is fully powered up, update the tail */
2235 I915_WRITE_TAIL(ring
, value
);
2236 POSTING_READ(RING_TAIL(ring
->mmio_base
));
2238 /* Let the ring send IDLE messages to the GT again,
2239 * and so let it sleep to conserve power when idle.
2241 I915_WRITE(GEN6_BSD_SLEEP_PSMI_CONTROL
,
2242 _MASKED_BIT_DISABLE(GEN6_BSD_SLEEP_MSG_DISABLE
));
2245 static int gen6_bsd_ring_flush(struct intel_engine_cs
*ring
,
2246 u32 invalidate
, u32 flush
)
2251 ret
= intel_ring_begin(ring
, 4);
2256 if (INTEL_INFO(ring
->dev
)->gen
>= 8)
2259 * Bspec vol 1c.5 - video engine command streamer:
2260 * "If ENABLED, all TLBs will be invalidated once the flush
2261 * operation is complete. This bit is only valid when the
2262 * Post-Sync Operation field is a value of 1h or 3h."
2264 if (invalidate
& I915_GEM_GPU_DOMAINS
)
2265 cmd
|= MI_INVALIDATE_TLB
| MI_INVALIDATE_BSD
|
2266 MI_FLUSH_DW_STORE_INDEX
| MI_FLUSH_DW_OP_STOREDW
;
2267 intel_ring_emit(ring
, cmd
);
2268 intel_ring_emit(ring
, I915_GEM_HWS_SCRATCH_ADDR
| MI_FLUSH_DW_USE_GTT
);
2269 if (INTEL_INFO(ring
->dev
)->gen
>= 8) {
2270 intel_ring_emit(ring
, 0); /* upper addr */
2271 intel_ring_emit(ring
, 0); /* value */
2273 intel_ring_emit(ring
, 0);
2274 intel_ring_emit(ring
, MI_NOOP
);
2276 intel_ring_advance(ring
);
2281 gen8_ring_dispatch_execbuffer(struct intel_engine_cs
*ring
,
2282 u64 offset
, u32 len
,
2285 bool ppgtt
= USES_PPGTT(ring
->dev
) && !(flags
& I915_DISPATCH_SECURE
);
2288 ret
= intel_ring_begin(ring
, 4);
2292 /* FIXME(BDW): Address space and security selectors. */
2293 intel_ring_emit(ring
, MI_BATCH_BUFFER_START_GEN8
| (ppgtt
<<8));
2294 intel_ring_emit(ring
, lower_32_bits(offset
));
2295 intel_ring_emit(ring
, upper_32_bits(offset
));
2296 intel_ring_emit(ring
, MI_NOOP
);
2297 intel_ring_advance(ring
);
2303 hsw_ring_dispatch_execbuffer(struct intel_engine_cs
*ring
,
2304 u64 offset
, u32 len
,
2309 ret
= intel_ring_begin(ring
, 2);
2313 intel_ring_emit(ring
,
2314 MI_BATCH_BUFFER_START
|
2315 (flags
& I915_DISPATCH_SECURE
?
2316 0 : MI_BATCH_PPGTT_HSW
| MI_BATCH_NON_SECURE_HSW
));
2317 /* bit0-7 is the length on GEN6+ */
2318 intel_ring_emit(ring
, offset
);
2319 intel_ring_advance(ring
);
2325 gen6_ring_dispatch_execbuffer(struct intel_engine_cs
*ring
,
2326 u64 offset
, u32 len
,
2331 ret
= intel_ring_begin(ring
, 2);
2335 intel_ring_emit(ring
,
2336 MI_BATCH_BUFFER_START
|
2337 (flags
& I915_DISPATCH_SECURE
? 0 : MI_BATCH_NON_SECURE_I965
));
2338 /* bit0-7 is the length on GEN6+ */
2339 intel_ring_emit(ring
, offset
);
2340 intel_ring_advance(ring
);
2345 /* Blitter support (SandyBridge+) */
2347 static int gen6_ring_flush(struct intel_engine_cs
*ring
,
2348 u32 invalidate
, u32 flush
)
2350 struct drm_device
*dev
= ring
->dev
;
2351 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2355 ret
= intel_ring_begin(ring
, 4);
2360 if (INTEL_INFO(ring
->dev
)->gen
>= 8)
2363 * Bspec vol 1c.3 - blitter engine command streamer:
2364 * "If ENABLED, all TLBs will be invalidated once the flush
2365 * operation is complete. This bit is only valid when the
2366 * Post-Sync Operation field is a value of 1h or 3h."
2368 if (invalidate
& I915_GEM_DOMAIN_RENDER
)
2369 cmd
|= MI_INVALIDATE_TLB
| MI_FLUSH_DW_STORE_INDEX
|
2370 MI_FLUSH_DW_OP_STOREDW
;
2371 intel_ring_emit(ring
, cmd
);
2372 intel_ring_emit(ring
, I915_GEM_HWS_SCRATCH_ADDR
| MI_FLUSH_DW_USE_GTT
);
2373 if (INTEL_INFO(ring
->dev
)->gen
>= 8) {
2374 intel_ring_emit(ring
, 0); /* upper addr */
2375 intel_ring_emit(ring
, 0); /* value */
2377 intel_ring_emit(ring
, 0);
2378 intel_ring_emit(ring
, MI_NOOP
);
2380 intel_ring_advance(ring
);
2382 if (!invalidate
&& flush
) {
2384 return gen7_ring_fbc_flush(ring
, FBC_REND_CACHE_CLEAN
);
2385 else if (IS_BROADWELL(dev
))
2386 dev_priv
->fbc
.need_sw_cache_clean
= true;
2392 int intel_init_render_ring_buffer(struct drm_device
*dev
)
2394 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2395 struct intel_engine_cs
*ring
= &dev_priv
->ring
[RCS
];
2396 struct drm_i915_gem_object
*obj
;
2399 ring
->name
= "render ring";
2401 ring
->mmio_base
= RENDER_RING_BASE
;
2403 if (INTEL_INFO(dev
)->gen
>= 8) {
2404 if (i915_semaphore_is_enabled(dev
)) {
2405 obj
= i915_gem_alloc_object(dev
, 4096);
2407 DRM_ERROR("Failed to allocate semaphore bo. Disabling semaphores\n");
2408 i915
.semaphores
= 0;
2410 i915_gem_object_set_cache_level(obj
, I915_CACHE_LLC
);
2411 ret
= i915_gem_obj_ggtt_pin(obj
, 0, PIN_NONBLOCK
);
2413 drm_gem_object_unreference(&obj
->base
);
2414 DRM_ERROR("Failed to pin semaphore bo. Disabling semaphores\n");
2415 i915
.semaphores
= 0;
2417 dev_priv
->semaphore_obj
= obj
;
2421 ring
->init_context
= intel_rcs_ctx_init
;
2422 ring
->add_request
= gen6_add_request
;
2423 ring
->flush
= gen8_render_ring_flush
;
2424 ring
->irq_get
= gen8_ring_get_irq
;
2425 ring
->irq_put
= gen8_ring_put_irq
;
2426 ring
->irq_enable_mask
= GT_RENDER_USER_INTERRUPT
;
2427 ring
->get_seqno
= gen6_ring_get_seqno
;
2428 ring
->set_seqno
= ring_set_seqno
;
2429 if (i915_semaphore_is_enabled(dev
)) {
2430 WARN_ON(!dev_priv
->semaphore_obj
);
2431 ring
->semaphore
.sync_to
= gen8_ring_sync
;
2432 ring
->semaphore
.signal
= gen8_rcs_signal
;
2433 GEN8_RING_SEMAPHORE_INIT
;
2435 } else if (INTEL_INFO(dev
)->gen
>= 6) {
2436 ring
->add_request
= gen6_add_request
;
2437 ring
->flush
= gen7_render_ring_flush
;
2438 if (INTEL_INFO(dev
)->gen
== 6)
2439 ring
->flush
= gen6_render_ring_flush
;
2440 ring
->irq_get
= gen6_ring_get_irq
;
2441 ring
->irq_put
= gen6_ring_put_irq
;
2442 ring
->irq_enable_mask
= GT_RENDER_USER_INTERRUPT
;
2443 ring
->get_seqno
= gen6_ring_get_seqno
;
2444 ring
->set_seqno
= ring_set_seqno
;
2445 if (i915_semaphore_is_enabled(dev
)) {
2446 ring
->semaphore
.sync_to
= gen6_ring_sync
;
2447 ring
->semaphore
.signal
= gen6_signal
;
2449 * The current semaphore is only applied on pre-gen8
2450 * platform. And there is no VCS2 ring on the pre-gen8
2451 * platform. So the semaphore between RCS and VCS2 is
2452 * initialized as INVALID. Gen8 will initialize the
2453 * sema between VCS2 and RCS later.
2455 ring
->semaphore
.mbox
.wait
[RCS
] = MI_SEMAPHORE_SYNC_INVALID
;
2456 ring
->semaphore
.mbox
.wait
[VCS
] = MI_SEMAPHORE_SYNC_RV
;
2457 ring
->semaphore
.mbox
.wait
[BCS
] = MI_SEMAPHORE_SYNC_RB
;
2458 ring
->semaphore
.mbox
.wait
[VECS
] = MI_SEMAPHORE_SYNC_RVE
;
2459 ring
->semaphore
.mbox
.wait
[VCS2
] = MI_SEMAPHORE_SYNC_INVALID
;
2460 ring
->semaphore
.mbox
.signal
[RCS
] = GEN6_NOSYNC
;
2461 ring
->semaphore
.mbox
.signal
[VCS
] = GEN6_VRSYNC
;
2462 ring
->semaphore
.mbox
.signal
[BCS
] = GEN6_BRSYNC
;
2463 ring
->semaphore
.mbox
.signal
[VECS
] = GEN6_VERSYNC
;
2464 ring
->semaphore
.mbox
.signal
[VCS2
] = GEN6_NOSYNC
;
2466 } else if (IS_GEN5(dev
)) {
2467 ring
->add_request
= pc_render_add_request
;
2468 ring
->flush
= gen4_render_ring_flush
;
2469 ring
->get_seqno
= pc_render_get_seqno
;
2470 ring
->set_seqno
= pc_render_set_seqno
;
2471 ring
->irq_get
= gen5_ring_get_irq
;
2472 ring
->irq_put
= gen5_ring_put_irq
;
2473 ring
->irq_enable_mask
= GT_RENDER_USER_INTERRUPT
|
2474 GT_RENDER_PIPECTL_NOTIFY_INTERRUPT
;
2476 ring
->add_request
= i9xx_add_request
;
2477 if (INTEL_INFO(dev
)->gen
< 4)
2478 ring
->flush
= gen2_render_ring_flush
;
2480 ring
->flush
= gen4_render_ring_flush
;
2481 ring
->get_seqno
= ring_get_seqno
;
2482 ring
->set_seqno
= ring_set_seqno
;
2484 ring
->irq_get
= i8xx_ring_get_irq
;
2485 ring
->irq_put
= i8xx_ring_put_irq
;
2487 ring
->irq_get
= i9xx_ring_get_irq
;
2488 ring
->irq_put
= i9xx_ring_put_irq
;
2490 ring
->irq_enable_mask
= I915_USER_INTERRUPT
;
2492 ring
->write_tail
= ring_write_tail
;
2494 if (IS_HASWELL(dev
))
2495 ring
->dispatch_execbuffer
= hsw_ring_dispatch_execbuffer
;
2496 else if (IS_GEN8(dev
))
2497 ring
->dispatch_execbuffer
= gen8_ring_dispatch_execbuffer
;
2498 else if (INTEL_INFO(dev
)->gen
>= 6)
2499 ring
->dispatch_execbuffer
= gen6_ring_dispatch_execbuffer
;
2500 else if (INTEL_INFO(dev
)->gen
>= 4)
2501 ring
->dispatch_execbuffer
= i965_dispatch_execbuffer
;
2502 else if (IS_I830(dev
) || IS_845G(dev
))
2503 ring
->dispatch_execbuffer
= i830_dispatch_execbuffer
;
2505 ring
->dispatch_execbuffer
= i915_dispatch_execbuffer
;
2506 ring
->init_hw
= init_render_ring
;
2507 ring
->cleanup
= render_ring_cleanup
;
2509 /* Workaround batchbuffer to combat CS tlb bug. */
2510 if (HAS_BROKEN_CS_TLB(dev
)) {
2511 obj
= i915_gem_alloc_object(dev
, I830_WA_SIZE
);
2513 DRM_ERROR("Failed to allocate batch bo\n");
2517 ret
= i915_gem_obj_ggtt_pin(obj
, 0, 0);
2519 drm_gem_object_unreference(&obj
->base
);
2520 DRM_ERROR("Failed to ping batch bo\n");
2524 ring
->scratch
.obj
= obj
;
2525 ring
->scratch
.gtt_offset
= i915_gem_obj_ggtt_offset(obj
);
2528 ret
= intel_init_ring_buffer(dev
, ring
);
2532 if (INTEL_INFO(dev
)->gen
>= 5) {
2533 ret
= intel_init_pipe_control(ring
);
2541 int intel_init_bsd_ring_buffer(struct drm_device
*dev
)
2543 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2544 struct intel_engine_cs
*ring
= &dev_priv
->ring
[VCS
];
2546 ring
->name
= "bsd ring";
2549 ring
->write_tail
= ring_write_tail
;
2550 if (INTEL_INFO(dev
)->gen
>= 6) {
2551 ring
->mmio_base
= GEN6_BSD_RING_BASE
;
2552 /* gen6 bsd needs a special wa for tail updates */
2554 ring
->write_tail
= gen6_bsd_ring_write_tail
;
2555 ring
->flush
= gen6_bsd_ring_flush
;
2556 ring
->add_request
= gen6_add_request
;
2557 ring
->get_seqno
= gen6_ring_get_seqno
;
2558 ring
->set_seqno
= ring_set_seqno
;
2559 if (INTEL_INFO(dev
)->gen
>= 8) {
2560 ring
->irq_enable_mask
=
2561 GT_RENDER_USER_INTERRUPT
<< GEN8_VCS1_IRQ_SHIFT
;
2562 ring
->irq_get
= gen8_ring_get_irq
;
2563 ring
->irq_put
= gen8_ring_put_irq
;
2564 ring
->dispatch_execbuffer
=
2565 gen8_ring_dispatch_execbuffer
;
2566 if (i915_semaphore_is_enabled(dev
)) {
2567 ring
->semaphore
.sync_to
= gen8_ring_sync
;
2568 ring
->semaphore
.signal
= gen8_xcs_signal
;
2569 GEN8_RING_SEMAPHORE_INIT
;
2572 ring
->irq_enable_mask
= GT_BSD_USER_INTERRUPT
;
2573 ring
->irq_get
= gen6_ring_get_irq
;
2574 ring
->irq_put
= gen6_ring_put_irq
;
2575 ring
->dispatch_execbuffer
=
2576 gen6_ring_dispatch_execbuffer
;
2577 if (i915_semaphore_is_enabled(dev
)) {
2578 ring
->semaphore
.sync_to
= gen6_ring_sync
;
2579 ring
->semaphore
.signal
= gen6_signal
;
2580 ring
->semaphore
.mbox
.wait
[RCS
] = MI_SEMAPHORE_SYNC_VR
;
2581 ring
->semaphore
.mbox
.wait
[VCS
] = MI_SEMAPHORE_SYNC_INVALID
;
2582 ring
->semaphore
.mbox
.wait
[BCS
] = MI_SEMAPHORE_SYNC_VB
;
2583 ring
->semaphore
.mbox
.wait
[VECS
] = MI_SEMAPHORE_SYNC_VVE
;
2584 ring
->semaphore
.mbox
.wait
[VCS2
] = MI_SEMAPHORE_SYNC_INVALID
;
2585 ring
->semaphore
.mbox
.signal
[RCS
] = GEN6_RVSYNC
;
2586 ring
->semaphore
.mbox
.signal
[VCS
] = GEN6_NOSYNC
;
2587 ring
->semaphore
.mbox
.signal
[BCS
] = GEN6_BVSYNC
;
2588 ring
->semaphore
.mbox
.signal
[VECS
] = GEN6_VEVSYNC
;
2589 ring
->semaphore
.mbox
.signal
[VCS2
] = GEN6_NOSYNC
;
2593 ring
->mmio_base
= BSD_RING_BASE
;
2594 ring
->flush
= bsd_ring_flush
;
2595 ring
->add_request
= i9xx_add_request
;
2596 ring
->get_seqno
= ring_get_seqno
;
2597 ring
->set_seqno
= ring_set_seqno
;
2599 ring
->irq_enable_mask
= ILK_BSD_USER_INTERRUPT
;
2600 ring
->irq_get
= gen5_ring_get_irq
;
2601 ring
->irq_put
= gen5_ring_put_irq
;
2603 ring
->irq_enable_mask
= I915_BSD_USER_INTERRUPT
;
2604 ring
->irq_get
= i9xx_ring_get_irq
;
2605 ring
->irq_put
= i9xx_ring_put_irq
;
2607 ring
->dispatch_execbuffer
= i965_dispatch_execbuffer
;
2609 ring
->init_hw
= init_ring_common
;
2611 return intel_init_ring_buffer(dev
, ring
);
2615 * Initialize the second BSD ring (eg. Broadwell GT3, Skylake GT3)
2617 int intel_init_bsd2_ring_buffer(struct drm_device
*dev
)
2619 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2620 struct intel_engine_cs
*ring
= &dev_priv
->ring
[VCS2
];
2622 ring
->name
= "bsd2 ring";
2625 ring
->write_tail
= ring_write_tail
;
2626 ring
->mmio_base
= GEN8_BSD2_RING_BASE
;
2627 ring
->flush
= gen6_bsd_ring_flush
;
2628 ring
->add_request
= gen6_add_request
;
2629 ring
->get_seqno
= gen6_ring_get_seqno
;
2630 ring
->set_seqno
= ring_set_seqno
;
2631 ring
->irq_enable_mask
=
2632 GT_RENDER_USER_INTERRUPT
<< GEN8_VCS2_IRQ_SHIFT
;
2633 ring
->irq_get
= gen8_ring_get_irq
;
2634 ring
->irq_put
= gen8_ring_put_irq
;
2635 ring
->dispatch_execbuffer
=
2636 gen8_ring_dispatch_execbuffer
;
2637 if (i915_semaphore_is_enabled(dev
)) {
2638 ring
->semaphore
.sync_to
= gen8_ring_sync
;
2639 ring
->semaphore
.signal
= gen8_xcs_signal
;
2640 GEN8_RING_SEMAPHORE_INIT
;
2642 ring
->init_hw
= init_ring_common
;
2644 return intel_init_ring_buffer(dev
, ring
);
2647 int intel_init_blt_ring_buffer(struct drm_device
*dev
)
2649 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2650 struct intel_engine_cs
*ring
= &dev_priv
->ring
[BCS
];
2652 ring
->name
= "blitter ring";
2655 ring
->mmio_base
= BLT_RING_BASE
;
2656 ring
->write_tail
= ring_write_tail
;
2657 ring
->flush
= gen6_ring_flush
;
2658 ring
->add_request
= gen6_add_request
;
2659 ring
->get_seqno
= gen6_ring_get_seqno
;
2660 ring
->set_seqno
= ring_set_seqno
;
2661 if (INTEL_INFO(dev
)->gen
>= 8) {
2662 ring
->irq_enable_mask
=
2663 GT_RENDER_USER_INTERRUPT
<< GEN8_BCS_IRQ_SHIFT
;
2664 ring
->irq_get
= gen8_ring_get_irq
;
2665 ring
->irq_put
= gen8_ring_put_irq
;
2666 ring
->dispatch_execbuffer
= gen8_ring_dispatch_execbuffer
;
2667 if (i915_semaphore_is_enabled(dev
)) {
2668 ring
->semaphore
.sync_to
= gen8_ring_sync
;
2669 ring
->semaphore
.signal
= gen8_xcs_signal
;
2670 GEN8_RING_SEMAPHORE_INIT
;
2673 ring
->irq_enable_mask
= GT_BLT_USER_INTERRUPT
;
2674 ring
->irq_get
= gen6_ring_get_irq
;
2675 ring
->irq_put
= gen6_ring_put_irq
;
2676 ring
->dispatch_execbuffer
= gen6_ring_dispatch_execbuffer
;
2677 if (i915_semaphore_is_enabled(dev
)) {
2678 ring
->semaphore
.signal
= gen6_signal
;
2679 ring
->semaphore
.sync_to
= gen6_ring_sync
;
2681 * The current semaphore is only applied on pre-gen8
2682 * platform. And there is no VCS2 ring on the pre-gen8
2683 * platform. So the semaphore between BCS and VCS2 is
2684 * initialized as INVALID. Gen8 will initialize the
2685 * sema between BCS and VCS2 later.
2687 ring
->semaphore
.mbox
.wait
[RCS
] = MI_SEMAPHORE_SYNC_BR
;
2688 ring
->semaphore
.mbox
.wait
[VCS
] = MI_SEMAPHORE_SYNC_BV
;
2689 ring
->semaphore
.mbox
.wait
[BCS
] = MI_SEMAPHORE_SYNC_INVALID
;
2690 ring
->semaphore
.mbox
.wait
[VECS
] = MI_SEMAPHORE_SYNC_BVE
;
2691 ring
->semaphore
.mbox
.wait
[VCS2
] = MI_SEMAPHORE_SYNC_INVALID
;
2692 ring
->semaphore
.mbox
.signal
[RCS
] = GEN6_RBSYNC
;
2693 ring
->semaphore
.mbox
.signal
[VCS
] = GEN6_VBSYNC
;
2694 ring
->semaphore
.mbox
.signal
[BCS
] = GEN6_NOSYNC
;
2695 ring
->semaphore
.mbox
.signal
[VECS
] = GEN6_VEBSYNC
;
2696 ring
->semaphore
.mbox
.signal
[VCS2
] = GEN6_NOSYNC
;
2699 ring
->init_hw
= init_ring_common
;
2701 return intel_init_ring_buffer(dev
, ring
);
2704 int intel_init_vebox_ring_buffer(struct drm_device
*dev
)
2706 struct drm_i915_private
*dev_priv
= dev
->dev_private
;
2707 struct intel_engine_cs
*ring
= &dev_priv
->ring
[VECS
];
2709 ring
->name
= "video enhancement ring";
2712 ring
->mmio_base
= VEBOX_RING_BASE
;
2713 ring
->write_tail
= ring_write_tail
;
2714 ring
->flush
= gen6_ring_flush
;
2715 ring
->add_request
= gen6_add_request
;
2716 ring
->get_seqno
= gen6_ring_get_seqno
;
2717 ring
->set_seqno
= ring_set_seqno
;
2719 if (INTEL_INFO(dev
)->gen
>= 8) {
2720 ring
->irq_enable_mask
=
2721 GT_RENDER_USER_INTERRUPT
<< GEN8_VECS_IRQ_SHIFT
;
2722 ring
->irq_get
= gen8_ring_get_irq
;
2723 ring
->irq_put
= gen8_ring_put_irq
;
2724 ring
->dispatch_execbuffer
= gen8_ring_dispatch_execbuffer
;
2725 if (i915_semaphore_is_enabled(dev
)) {
2726 ring
->semaphore
.sync_to
= gen8_ring_sync
;
2727 ring
->semaphore
.signal
= gen8_xcs_signal
;
2728 GEN8_RING_SEMAPHORE_INIT
;
2731 ring
->irq_enable_mask
= PM_VEBOX_USER_INTERRUPT
;
2732 ring
->irq_get
= hsw_vebox_get_irq
;
2733 ring
->irq_put
= hsw_vebox_put_irq
;
2734 ring
->dispatch_execbuffer
= gen6_ring_dispatch_execbuffer
;
2735 if (i915_semaphore_is_enabled(dev
)) {
2736 ring
->semaphore
.sync_to
= gen6_ring_sync
;
2737 ring
->semaphore
.signal
= gen6_signal
;
2738 ring
->semaphore
.mbox
.wait
[RCS
] = MI_SEMAPHORE_SYNC_VER
;
2739 ring
->semaphore
.mbox
.wait
[VCS
] = MI_SEMAPHORE_SYNC_VEV
;
2740 ring
->semaphore
.mbox
.wait
[BCS
] = MI_SEMAPHORE_SYNC_VEB
;
2741 ring
->semaphore
.mbox
.wait
[VECS
] = MI_SEMAPHORE_SYNC_INVALID
;
2742 ring
->semaphore
.mbox
.wait
[VCS2
] = MI_SEMAPHORE_SYNC_INVALID
;
2743 ring
->semaphore
.mbox
.signal
[RCS
] = GEN6_RVESYNC
;
2744 ring
->semaphore
.mbox
.signal
[VCS
] = GEN6_VVESYNC
;
2745 ring
->semaphore
.mbox
.signal
[BCS
] = GEN6_BVESYNC
;
2746 ring
->semaphore
.mbox
.signal
[VECS
] = GEN6_NOSYNC
;
2747 ring
->semaphore
.mbox
.signal
[VCS2
] = GEN6_NOSYNC
;
2750 ring
->init_hw
= init_ring_common
;
2752 return intel_init_ring_buffer(dev
, ring
);
2756 intel_ring_flush_all_caches(struct intel_engine_cs
*ring
)
2760 if (!ring
->gpu_caches_dirty
)
2763 ret
= ring
->flush(ring
, 0, I915_GEM_GPU_DOMAINS
);
2767 trace_i915_gem_ring_flush(ring
, 0, I915_GEM_GPU_DOMAINS
);
2769 ring
->gpu_caches_dirty
= false;
2774 intel_ring_invalidate_all_caches(struct intel_engine_cs
*ring
)
2776 uint32_t flush_domains
;
2780 if (ring
->gpu_caches_dirty
)
2781 flush_domains
= I915_GEM_GPU_DOMAINS
;
2783 ret
= ring
->flush(ring
, I915_GEM_GPU_DOMAINS
, flush_domains
);
2787 trace_i915_gem_ring_flush(ring
, I915_GEM_GPU_DOMAINS
, flush_domains
);
2789 ring
->gpu_caches_dirty
= false;
2794 intel_stop_ring_buffer(struct intel_engine_cs
*ring
)
2798 if (!intel_ring_initialized(ring
))
2801 ret
= intel_ring_idle(ring
);
2802 if (ret
&& !i915_reset_in_progress(&to_i915(ring
->dev
)->gpu_error
))
2803 DRM_ERROR("failed to quiesce %s whilst cleaning up: %d\n",