1 /**************************************************************************
3 * Copyright © 2009 VMware, Inc., Palo Alto, CA., USA
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sub license, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
14 * The above copyright notice and this permission notice (including the
15 * next paragraph) shall be included in all copies or substantial portions
18 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
19 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
20 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
21 * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM,
22 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
23 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
24 * USE OR OTHER DEALINGS IN THE SOFTWARE.
26 **************************************************************************/
28 #include "vmwgfx_drv.h"
30 #include <drm/ttm/ttm_placement.h>
32 bool vmw_fifo_have_3d(struct vmw_private
*dev_priv
)
34 __le32 __iomem
*fifo_mem
= dev_priv
->mmio_virt
;
35 uint32_t fifo_min
, hwversion
;
36 const struct vmw_fifo_state
*fifo
= &dev_priv
->fifo
;
38 if (!(dev_priv
->capabilities
& SVGA_CAP_3D
))
41 if (dev_priv
->capabilities
& SVGA_CAP_GBOBJECTS
) {
44 if (!dev_priv
->has_mob
)
47 spin_lock(&dev_priv
->cap_lock
);
48 vmw_write(dev_priv
, SVGA_REG_DEV_CAP
, SVGA3D_DEVCAP_3D
);
49 result
= vmw_read(dev_priv
, SVGA_REG_DEV_CAP
);
50 spin_unlock(&dev_priv
->cap_lock
);
55 if (!(dev_priv
->capabilities
& SVGA_CAP_EXTENDED_FIFO
))
58 fifo_min
= ioread32(fifo_mem
+ SVGA_FIFO_MIN
);
59 if (fifo_min
<= SVGA_FIFO_3D_HWVERSION
* sizeof(unsigned int))
62 hwversion
= ioread32(fifo_mem
+
63 ((fifo
->capabilities
&
64 SVGA_FIFO_CAP_3D_HWVERSION_REVISED
) ?
65 SVGA_FIFO_3D_HWVERSION_REVISED
:
66 SVGA_FIFO_3D_HWVERSION
));
71 if (hwversion
< SVGA3D_HWVERSION_WS8_B1
)
74 /* Legacy Display Unit does not support surfaces */
75 if (dev_priv
->active_display_unit
== vmw_du_legacy
)
81 bool vmw_fifo_have_pitchlock(struct vmw_private
*dev_priv
)
83 __le32 __iomem
*fifo_mem
= dev_priv
->mmio_virt
;
86 if (!(dev_priv
->capabilities
& SVGA_CAP_EXTENDED_FIFO
))
89 caps
= ioread32(fifo_mem
+ SVGA_FIFO_CAPABILITIES
);
90 if (caps
& SVGA_FIFO_CAP_PITCHLOCK
)
96 int vmw_fifo_init(struct vmw_private
*dev_priv
, struct vmw_fifo_state
*fifo
)
98 __le32 __iomem
*fifo_mem
= dev_priv
->mmio_virt
;
102 fifo
->static_buffer_size
= VMWGFX_FIFO_STATIC_SIZE
;
103 fifo
->static_buffer
= vmalloc(fifo
->static_buffer_size
);
104 if (unlikely(fifo
->static_buffer
== NULL
))
107 fifo
->dynamic_buffer
= NULL
;
108 fifo
->reserved_size
= 0;
109 fifo
->using_bounce_buffer
= false;
111 mutex_init(&fifo
->fifo_mutex
);
112 init_rwsem(&fifo
->rwsem
);
114 DRM_INFO("width %d\n", vmw_read(dev_priv
, SVGA_REG_WIDTH
));
115 DRM_INFO("height %d\n", vmw_read(dev_priv
, SVGA_REG_HEIGHT
));
116 DRM_INFO("bpp %d\n", vmw_read(dev_priv
, SVGA_REG_BITS_PER_PIXEL
));
118 dev_priv
->enable_state
= vmw_read(dev_priv
, SVGA_REG_ENABLE
);
119 dev_priv
->config_done_state
= vmw_read(dev_priv
, SVGA_REG_CONFIG_DONE
);
120 dev_priv
->traces_state
= vmw_read(dev_priv
, SVGA_REG_TRACES
);
122 vmw_write(dev_priv
, SVGA_REG_ENABLE
, SVGA_REG_ENABLE_ENABLE_HIDE
);
123 vmw_write(dev_priv
, SVGA_REG_TRACES
, 0);
126 if (dev_priv
->capabilities
& SVGA_CAP_EXTENDED_FIFO
)
127 min
= vmw_read(dev_priv
, SVGA_REG_MEM_REGS
);
133 iowrite32(min
, fifo_mem
+ SVGA_FIFO_MIN
);
134 iowrite32(dev_priv
->mmio_size
, fifo_mem
+ SVGA_FIFO_MAX
);
136 iowrite32(min
, fifo_mem
+ SVGA_FIFO_NEXT_CMD
);
137 iowrite32(min
, fifo_mem
+ SVGA_FIFO_STOP
);
138 iowrite32(0, fifo_mem
+ SVGA_FIFO_BUSY
);
141 vmw_write(dev_priv
, SVGA_REG_CONFIG_DONE
, 1);
143 max
= ioread32(fifo_mem
+ SVGA_FIFO_MAX
);
144 min
= ioread32(fifo_mem
+ SVGA_FIFO_MIN
);
145 fifo
->capabilities
= ioread32(fifo_mem
+ SVGA_FIFO_CAPABILITIES
);
147 DRM_INFO("Fifo max 0x%08x min 0x%08x cap 0x%08x\n",
150 (unsigned int) fifo
->capabilities
);
152 atomic_set(&dev_priv
->marker_seq
, dev_priv
->last_read_seqno
);
153 iowrite32(dev_priv
->last_read_seqno
, fifo_mem
+ SVGA_FIFO_FENCE
);
154 vmw_marker_queue_init(&fifo
->marker_queue
);
159 void vmw_fifo_ping_host(struct vmw_private
*dev_priv
, uint32_t reason
)
161 __le32 __iomem
*fifo_mem
= dev_priv
->mmio_virt
;
162 static DEFINE_SPINLOCK(ping_lock
);
163 unsigned long irq_flags
;
166 * The ping_lock is needed because we don't have an atomic
167 * test-and-set of the SVGA_FIFO_BUSY register.
169 spin_lock_irqsave(&ping_lock
, irq_flags
);
170 if (unlikely(ioread32(fifo_mem
+ SVGA_FIFO_BUSY
) == 0)) {
171 iowrite32(1, fifo_mem
+ SVGA_FIFO_BUSY
);
172 vmw_write(dev_priv
, SVGA_REG_SYNC
, reason
);
174 spin_unlock_irqrestore(&ping_lock
, irq_flags
);
177 void vmw_fifo_release(struct vmw_private
*dev_priv
, struct vmw_fifo_state
*fifo
)
179 __le32 __iomem
*fifo_mem
= dev_priv
->mmio_virt
;
181 vmw_write(dev_priv
, SVGA_REG_SYNC
, SVGA_SYNC_GENERIC
);
182 while (vmw_read(dev_priv
, SVGA_REG_BUSY
) != 0)
185 dev_priv
->last_read_seqno
= ioread32(fifo_mem
+ SVGA_FIFO_FENCE
);
187 vmw_write(dev_priv
, SVGA_REG_CONFIG_DONE
,
188 dev_priv
->config_done_state
);
189 vmw_write(dev_priv
, SVGA_REG_ENABLE
,
190 dev_priv
->enable_state
);
191 vmw_write(dev_priv
, SVGA_REG_TRACES
,
192 dev_priv
->traces_state
);
194 vmw_marker_queue_takedown(&fifo
->marker_queue
);
196 if (likely(fifo
->static_buffer
!= NULL
)) {
197 vfree(fifo
->static_buffer
);
198 fifo
->static_buffer
= NULL
;
201 if (likely(fifo
->dynamic_buffer
!= NULL
)) {
202 vfree(fifo
->dynamic_buffer
);
203 fifo
->dynamic_buffer
= NULL
;
207 static bool vmw_fifo_is_full(struct vmw_private
*dev_priv
, uint32_t bytes
)
209 __le32 __iomem
*fifo_mem
= dev_priv
->mmio_virt
;
210 uint32_t max
= ioread32(fifo_mem
+ SVGA_FIFO_MAX
);
211 uint32_t next_cmd
= ioread32(fifo_mem
+ SVGA_FIFO_NEXT_CMD
);
212 uint32_t min
= ioread32(fifo_mem
+ SVGA_FIFO_MIN
);
213 uint32_t stop
= ioread32(fifo_mem
+ SVGA_FIFO_STOP
);
215 return ((max
- next_cmd
) + (stop
- min
) <= bytes
);
218 static int vmw_fifo_wait_noirq(struct vmw_private
*dev_priv
,
219 uint32_t bytes
, bool interruptible
,
220 unsigned long timeout
)
223 unsigned long end_jiffies
= jiffies
+ timeout
;
226 DRM_INFO("Fifo wait noirq.\n");
229 prepare_to_wait(&dev_priv
->fifo_queue
, &__wait
,
231 TASK_INTERRUPTIBLE
: TASK_UNINTERRUPTIBLE
);
232 if (!vmw_fifo_is_full(dev_priv
, bytes
))
234 if (time_after_eq(jiffies
, end_jiffies
)) {
236 DRM_ERROR("SVGA device lockup.\n");
240 if (interruptible
&& signal_pending(current
)) {
245 finish_wait(&dev_priv
->fifo_queue
, &__wait
);
246 wake_up_all(&dev_priv
->fifo_queue
);
247 DRM_INFO("Fifo noirq exit.\n");
251 static int vmw_fifo_wait(struct vmw_private
*dev_priv
,
252 uint32_t bytes
, bool interruptible
,
253 unsigned long timeout
)
256 unsigned long irq_flags
;
258 if (likely(!vmw_fifo_is_full(dev_priv
, bytes
)))
261 vmw_fifo_ping_host(dev_priv
, SVGA_SYNC_FIFOFULL
);
262 if (!(dev_priv
->capabilities
& SVGA_CAP_IRQMASK
))
263 return vmw_fifo_wait_noirq(dev_priv
, bytes
,
264 interruptible
, timeout
);
266 spin_lock(&dev_priv
->waiter_lock
);
267 if (atomic_add_return(1, &dev_priv
->fifo_queue_waiters
) > 0) {
268 spin_lock_irqsave(&dev_priv
->irq_lock
, irq_flags
);
269 outl(SVGA_IRQFLAG_FIFO_PROGRESS
,
270 dev_priv
->io_start
+ VMWGFX_IRQSTATUS_PORT
);
271 dev_priv
->irq_mask
|= SVGA_IRQFLAG_FIFO_PROGRESS
;
272 vmw_write(dev_priv
, SVGA_REG_IRQMASK
, dev_priv
->irq_mask
);
273 spin_unlock_irqrestore(&dev_priv
->irq_lock
, irq_flags
);
275 spin_unlock(&dev_priv
->waiter_lock
);
278 ret
= wait_event_interruptible_timeout
279 (dev_priv
->fifo_queue
,
280 !vmw_fifo_is_full(dev_priv
, bytes
), timeout
);
282 ret
= wait_event_timeout
283 (dev_priv
->fifo_queue
,
284 !vmw_fifo_is_full(dev_priv
, bytes
), timeout
);
286 if (unlikely(ret
== 0))
288 else if (likely(ret
> 0))
291 spin_lock(&dev_priv
->waiter_lock
);
292 if (atomic_dec_and_test(&dev_priv
->fifo_queue_waiters
)) {
293 spin_lock_irqsave(&dev_priv
->irq_lock
, irq_flags
);
294 dev_priv
->irq_mask
&= ~SVGA_IRQFLAG_FIFO_PROGRESS
;
295 vmw_write(dev_priv
, SVGA_REG_IRQMASK
, dev_priv
->irq_mask
);
296 spin_unlock_irqrestore(&dev_priv
->irq_lock
, irq_flags
);
298 spin_unlock(&dev_priv
->waiter_lock
);
304 * Reserve @bytes number of bytes in the fifo.
306 * This function will return NULL (error) on two conditions:
307 * If it timeouts waiting for fifo space, or if @bytes is larger than the
308 * available fifo space.
311 * Pointer to the fifo, or null on error (possible hardware hang).
313 static void *vmw_local_fifo_reserve(struct vmw_private
*dev_priv
,
316 struct vmw_fifo_state
*fifo_state
= &dev_priv
->fifo
;
317 __le32 __iomem
*fifo_mem
= dev_priv
->mmio_virt
;
321 uint32_t reserveable
= fifo_state
->capabilities
& SVGA_FIFO_CAP_RESERVE
;
324 mutex_lock(&fifo_state
->fifo_mutex
);
325 max
= ioread32(fifo_mem
+ SVGA_FIFO_MAX
);
326 min
= ioread32(fifo_mem
+ SVGA_FIFO_MIN
);
327 next_cmd
= ioread32(fifo_mem
+ SVGA_FIFO_NEXT_CMD
);
329 if (unlikely(bytes
>= (max
- min
)))
332 BUG_ON(fifo_state
->reserved_size
!= 0);
333 BUG_ON(fifo_state
->dynamic_buffer
!= NULL
);
335 fifo_state
->reserved_size
= bytes
;
338 uint32_t stop
= ioread32(fifo_mem
+ SVGA_FIFO_STOP
);
339 bool need_bounce
= false;
340 bool reserve_in_place
= false;
342 if (next_cmd
>= stop
) {
343 if (likely((next_cmd
+ bytes
< max
||
344 (next_cmd
+ bytes
== max
&& stop
> min
))))
345 reserve_in_place
= true;
347 else if (vmw_fifo_is_full(dev_priv
, bytes
)) {
348 ret
= vmw_fifo_wait(dev_priv
, bytes
,
350 if (unlikely(ret
!= 0))
357 if (likely((next_cmd
+ bytes
< stop
)))
358 reserve_in_place
= true;
360 ret
= vmw_fifo_wait(dev_priv
, bytes
,
362 if (unlikely(ret
!= 0))
367 if (reserve_in_place
) {
368 if (reserveable
|| bytes
<= sizeof(uint32_t)) {
369 fifo_state
->using_bounce_buffer
= false;
372 iowrite32(bytes
, fifo_mem
+
374 return fifo_mem
+ (next_cmd
>> 2);
381 fifo_state
->using_bounce_buffer
= true;
382 if (bytes
< fifo_state
->static_buffer_size
)
383 return fifo_state
->static_buffer
;
385 fifo_state
->dynamic_buffer
= vmalloc(bytes
);
386 return fifo_state
->dynamic_buffer
;
391 fifo_state
->reserved_size
= 0;
392 mutex_unlock(&fifo_state
->fifo_mutex
);
397 void *vmw_fifo_reserve(struct vmw_private
*dev_priv
, uint32_t bytes
)
402 ret
= vmw_cmdbuf_reserve(dev_priv
->cman
, bytes
,
403 SVGA3D_INVALID_ID
, false, NULL
);
405 ret
= vmw_local_fifo_reserve(dev_priv
, bytes
);
406 if (IS_ERR_OR_NULL(ret
)) {
407 DRM_ERROR("Fifo reserve failure of %u bytes.\n",
416 static void vmw_fifo_res_copy(struct vmw_fifo_state
*fifo_state
,
417 __le32 __iomem
*fifo_mem
,
419 uint32_t max
, uint32_t min
, uint32_t bytes
)
421 uint32_t chunk_size
= max
- next_cmd
;
423 uint32_t *buffer
= (fifo_state
->dynamic_buffer
!= NULL
) ?
424 fifo_state
->dynamic_buffer
: fifo_state
->static_buffer
;
426 if (bytes
< chunk_size
)
429 iowrite32(bytes
, fifo_mem
+ SVGA_FIFO_RESERVED
);
431 memcpy_toio(fifo_mem
+ (next_cmd
>> 2), buffer
, chunk_size
);
432 rest
= bytes
- chunk_size
;
434 memcpy_toio(fifo_mem
+ (min
>> 2), buffer
+ (chunk_size
>> 2),
438 static void vmw_fifo_slow_copy(struct vmw_fifo_state
*fifo_state
,
439 __le32 __iomem
*fifo_mem
,
441 uint32_t max
, uint32_t min
, uint32_t bytes
)
443 uint32_t *buffer
= (fifo_state
->dynamic_buffer
!= NULL
) ?
444 fifo_state
->dynamic_buffer
: fifo_state
->static_buffer
;
447 iowrite32(*buffer
++, fifo_mem
+ (next_cmd
>> 2));
448 next_cmd
+= sizeof(uint32_t);
449 if (unlikely(next_cmd
== max
))
452 iowrite32(next_cmd
, fifo_mem
+ SVGA_FIFO_NEXT_CMD
);
454 bytes
-= sizeof(uint32_t);
458 void vmw_local_fifo_commit(struct vmw_private
*dev_priv
, uint32_t bytes
)
460 struct vmw_fifo_state
*fifo_state
= &dev_priv
->fifo
;
461 __le32 __iomem
*fifo_mem
= dev_priv
->mmio_virt
;
462 uint32_t next_cmd
= ioread32(fifo_mem
+ SVGA_FIFO_NEXT_CMD
);
463 uint32_t max
= ioread32(fifo_mem
+ SVGA_FIFO_MAX
);
464 uint32_t min
= ioread32(fifo_mem
+ SVGA_FIFO_MIN
);
465 bool reserveable
= fifo_state
->capabilities
& SVGA_FIFO_CAP_RESERVE
;
467 BUG_ON((bytes
& 3) != 0);
468 BUG_ON(bytes
> fifo_state
->reserved_size
);
470 fifo_state
->reserved_size
= 0;
472 if (fifo_state
->using_bounce_buffer
) {
474 vmw_fifo_res_copy(fifo_state
, fifo_mem
,
475 next_cmd
, max
, min
, bytes
);
477 vmw_fifo_slow_copy(fifo_state
, fifo_mem
,
478 next_cmd
, max
, min
, bytes
);
480 if (fifo_state
->dynamic_buffer
) {
481 vfree(fifo_state
->dynamic_buffer
);
482 fifo_state
->dynamic_buffer
= NULL
;
487 down_write(&fifo_state
->rwsem
);
488 if (fifo_state
->using_bounce_buffer
|| reserveable
) {
491 next_cmd
-= max
- min
;
493 iowrite32(next_cmd
, fifo_mem
+ SVGA_FIFO_NEXT_CMD
);
497 iowrite32(0, fifo_mem
+ SVGA_FIFO_RESERVED
);
499 up_write(&fifo_state
->rwsem
);
500 vmw_fifo_ping_host(dev_priv
, SVGA_SYNC_GENERIC
);
501 mutex_unlock(&fifo_state
->fifo_mutex
);
504 void vmw_fifo_commit(struct vmw_private
*dev_priv
, uint32_t bytes
)
507 vmw_cmdbuf_commit(dev_priv
->cman
, bytes
, NULL
, false);
509 vmw_local_fifo_commit(dev_priv
, bytes
);
514 * vmw_fifo_commit_flush - Commit fifo space and flush any buffered commands.
516 * @dev_priv: Pointer to device private structure.
517 * @bytes: Number of bytes to commit.
519 static void vmw_fifo_commit_flush(struct vmw_private
*dev_priv
, uint32_t bytes
)
522 vmw_cmdbuf_commit(dev_priv
->cman
, bytes
, NULL
, true);
524 vmw_local_fifo_commit(dev_priv
, bytes
);
528 * vmw_fifo_flush - Flush any buffered commands and make sure command processing
531 * @dev_priv: Pointer to device private structure.
532 * @interruptible: Whether to wait interruptible if function needs to sleep.
534 int vmw_fifo_flush(struct vmw_private
*dev_priv
, bool interruptible
)
539 return vmw_cmdbuf_cur_flush(dev_priv
->cman
, interruptible
);
544 int vmw_fifo_send_fence(struct vmw_private
*dev_priv
, uint32_t *seqno
)
546 struct vmw_fifo_state
*fifo_state
= &dev_priv
->fifo
;
547 struct svga_fifo_cmd_fence
*cmd_fence
;
550 uint32_t bytes
= sizeof(__le32
) + sizeof(*cmd_fence
);
552 fm
= vmw_fifo_reserve(dev_priv
, bytes
);
553 if (unlikely(fm
== NULL
)) {
554 *seqno
= atomic_read(&dev_priv
->marker_seq
);
556 (void)vmw_fallback_wait(dev_priv
, false, true, *seqno
,
562 *seqno
= atomic_add_return(1, &dev_priv
->marker_seq
);
563 } while (*seqno
== 0);
565 if (!(fifo_state
->capabilities
& SVGA_FIFO_CAP_FENCE
)) {
568 * Don't request hardware to send a fence. The
569 * waiting code in vmwgfx_irq.c will emulate this.
572 vmw_fifo_commit(dev_priv
, 0);
576 *(__le32
*) fm
= cpu_to_le32(SVGA_CMD_FENCE
);
577 cmd_fence
= (struct svga_fifo_cmd_fence
*)
578 ((unsigned long)fm
+ sizeof(__le32
));
580 iowrite32(*seqno
, &cmd_fence
->fence
);
581 vmw_fifo_commit_flush(dev_priv
, bytes
);
582 (void) vmw_marker_push(&fifo_state
->marker_queue
, *seqno
);
583 vmw_update_seqno(dev_priv
, fifo_state
);
590 * vmw_fifo_emit_dummy_legacy_query - emits a dummy query to the fifo using
591 * legacy query commands.
593 * @dev_priv: The device private structure.
594 * @cid: The hardware context id used for the query.
596 * See the vmw_fifo_emit_dummy_query documentation.
598 static int vmw_fifo_emit_dummy_legacy_query(struct vmw_private
*dev_priv
,
602 * A query wait without a preceding query end will
603 * actually finish all queries for this cid
604 * without writing to the query result structure.
607 struct ttm_buffer_object
*bo
= &dev_priv
->dummy_query_bo
->base
;
609 SVGA3dCmdHeader header
;
610 SVGA3dCmdWaitForQuery body
;
613 cmd
= vmw_fifo_reserve(dev_priv
, sizeof(*cmd
));
615 if (unlikely(cmd
== NULL
)) {
616 DRM_ERROR("Out of fifo space for dummy query.\n");
620 cmd
->header
.id
= SVGA_3D_CMD_WAIT_FOR_QUERY
;
621 cmd
->header
.size
= sizeof(cmd
->body
);
623 cmd
->body
.type
= SVGA3D_QUERYTYPE_OCCLUSION
;
625 if (bo
->mem
.mem_type
== TTM_PL_VRAM
) {
626 cmd
->body
.guestResult
.gmrId
= SVGA_GMR_FRAMEBUFFER
;
627 cmd
->body
.guestResult
.offset
= bo
->offset
;
629 cmd
->body
.guestResult
.gmrId
= bo
->mem
.start
;
630 cmd
->body
.guestResult
.offset
= 0;
633 vmw_fifo_commit(dev_priv
, sizeof(*cmd
));
639 * vmw_fifo_emit_dummy_gb_query - emits a dummy query to the fifo using
640 * guest-backed resource query commands.
642 * @dev_priv: The device private structure.
643 * @cid: The hardware context id used for the query.
645 * See the vmw_fifo_emit_dummy_query documentation.
647 static int vmw_fifo_emit_dummy_gb_query(struct vmw_private
*dev_priv
,
651 * A query wait without a preceding query end will
652 * actually finish all queries for this cid
653 * without writing to the query result structure.
656 struct ttm_buffer_object
*bo
= &dev_priv
->dummy_query_bo
->base
;
658 SVGA3dCmdHeader header
;
659 SVGA3dCmdWaitForGBQuery body
;
662 cmd
= vmw_fifo_reserve(dev_priv
, sizeof(*cmd
));
664 if (unlikely(cmd
== NULL
)) {
665 DRM_ERROR("Out of fifo space for dummy query.\n");
669 cmd
->header
.id
= SVGA_3D_CMD_WAIT_FOR_GB_QUERY
;
670 cmd
->header
.size
= sizeof(cmd
->body
);
672 cmd
->body
.type
= SVGA3D_QUERYTYPE_OCCLUSION
;
673 BUG_ON(bo
->mem
.mem_type
!= VMW_PL_MOB
);
674 cmd
->body
.mobid
= bo
->mem
.start
;
675 cmd
->body
.offset
= 0;
677 vmw_fifo_commit(dev_priv
, sizeof(*cmd
));
684 * vmw_fifo_emit_dummy_gb_query - emits a dummy query to the fifo using
685 * appropriate resource query commands.
687 * @dev_priv: The device private structure.
688 * @cid: The hardware context id used for the query.
690 * This function is used to emit a dummy occlusion query with
691 * no primitives rendered between query begin and query end.
692 * It's used to provide a query barrier, in order to know that when
693 * this query is finished, all preceding queries are also finished.
695 * A Query results structure should have been initialized at the start
696 * of the dev_priv->dummy_query_bo buffer object. And that buffer object
697 * must also be either reserved or pinned when this function is called.
699 * Returns -ENOMEM on failure to reserve fifo space.
701 int vmw_fifo_emit_dummy_query(struct vmw_private
*dev_priv
,
704 if (dev_priv
->has_mob
)
705 return vmw_fifo_emit_dummy_gb_query(dev_priv
, cid
);
707 return vmw_fifo_emit_dummy_legacy_query(dev_priv
, cid
);