2 * Copyright 2006 VMware, Inc.
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sublicense, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
26 #include "intel_batchbuffer.h"
27 #include "intel_buffer_objects.h"
28 #include "brw_bufmgr.h"
29 #include "intel_buffers.h"
30 #include "intel_fbo.h"
31 #include "brw_context.h"
32 #include "brw_defines.h"
33 #include "brw_state.h"
34 #include "common/gen_decoder.h"
36 #include "util/hash_table.h"
41 #define FILE_DEBUG_FLAG DEBUG_BUFMGR
44 * Target sizes of the batch and state buffers. We create the initial
45 * buffers at these sizes, and flush when they're nearly full. If we
46 * underestimate how close we are to the end, and suddenly need more space
47 * in the middle of a draw, we can grow the buffers, and finish the draw.
48 * At that point, we'll be over our target size, so the next operation
49 * should flush. Each time we flush the batch, we recreate both buffers
50 * at the original target size, so it doesn't grow without bound.
52 #define BATCH_SZ (20 * 1024)
53 #define STATE_SZ (16 * 1024)
55 /* The kernel assumes batchbuffers are smaller than 256kB. */
56 #define MAX_BATCH_SIZE (256 * 1024)
58 /* 3DSTATE_BINDING_TABLE_POINTERS has a U16 offset from Surface State Base
59 * Address, which means that we can't put binding tables beyond 64kB. This
60 * effectively limits the maximum statebuffer size to 64kB.
62 #define MAX_STATE_SIZE (64 * 1024)
65 intel_batchbuffer_reset(struct brw_context
*brw
);
68 uint_key_compare(const void *a
, const void *b
)
74 uint_key_hash(const void *key
)
76 return (uintptr_t) key
;
80 init_reloc_list(struct brw_reloc_list
*rlist
, int count
)
82 rlist
->reloc_count
= 0;
83 rlist
->reloc_array_size
= count
;
84 rlist
->relocs
= malloc(rlist
->reloc_array_size
*
85 sizeof(struct drm_i915_gem_relocation_entry
));
89 intel_batchbuffer_init(struct brw_context
*brw
)
91 struct intel_screen
*screen
= brw
->screen
;
92 struct intel_batchbuffer
*batch
= &brw
->batch
;
93 const struct gen_device_info
*devinfo
= &screen
->devinfo
;
95 if (!devinfo
->has_llc
) {
96 batch
->batch_cpu_map
= malloc(BATCH_SZ
);
97 batch
->map
= batch
->batch_cpu_map
;
98 batch
->map_next
= batch
->map
;
99 batch
->state_cpu_map
= malloc(STATE_SZ
);
100 batch
->state_map
= batch
->state_cpu_map
;
103 init_reloc_list(&batch
->batch_relocs
, 250);
104 init_reloc_list(&batch
->state_relocs
, 250);
106 batch
->exec_count
= 0;
107 batch
->exec_array_size
= 100;
109 malloc(batch
->exec_array_size
* sizeof(batch
->exec_bos
[0]));
110 batch
->validation_list
=
111 malloc(batch
->exec_array_size
* sizeof(batch
->validation_list
[0]));
113 if (INTEL_DEBUG
& DEBUG_BATCH
) {
114 batch
->state_batch_sizes
=
115 _mesa_hash_table_create(NULL
, uint_key_hash
, uint_key_compare
);
118 batch
->use_batch_first
=
119 screen
->kernel_features
& KERNEL_ALLOWS_EXEC_BATCH_FIRST
;
121 /* PIPE_CONTROL needs a w/a but only on gen6 */
122 batch
->valid_reloc_flags
= EXEC_OBJECT_WRITE
;
123 if (devinfo
->gen
== 6)
124 batch
->valid_reloc_flags
|= EXEC_OBJECT_NEEDS_GTT
;
126 intel_batchbuffer_reset(brw
);
129 #define READ_ONCE(x) (*(volatile __typeof__(x) *)&(x))
132 add_exec_bo(struct intel_batchbuffer
*batch
, struct brw_bo
*bo
)
134 unsigned index
= READ_ONCE(bo
->index
);
136 if (index
< batch
->exec_count
&& batch
->exec_bos
[index
] == bo
)
139 /* May have been shared between multiple active batches */
140 for (index
= 0; index
< batch
->exec_count
; index
++) {
141 if (batch
->exec_bos
[index
] == bo
)
145 brw_bo_reference(bo
);
147 if (batch
->exec_count
== batch
->exec_array_size
) {
148 batch
->exec_array_size
*= 2;
150 realloc(batch
->exec_bos
,
151 batch
->exec_array_size
* sizeof(batch
->exec_bos
[0]));
152 batch
->validation_list
=
153 realloc(batch
->validation_list
,
154 batch
->exec_array_size
* sizeof(batch
->validation_list
[0]));
157 batch
->validation_list
[batch
->exec_count
] =
158 (struct drm_i915_gem_exec_object2
) {
159 .handle
= bo
->gem_handle
,
160 .alignment
= bo
->align
,
161 .offset
= bo
->gtt_offset
,
165 bo
->index
= batch
->exec_count
;
166 batch
->exec_bos
[batch
->exec_count
] = bo
;
167 batch
->aperture_space
+= bo
->size
;
169 return batch
->exec_count
++;
173 intel_batchbuffer_reset(struct brw_context
*brw
)
175 struct intel_screen
*screen
= brw
->screen
;
176 struct intel_batchbuffer
*batch
= &brw
->batch
;
177 struct brw_bufmgr
*bufmgr
= screen
->bufmgr
;
179 if (batch
->last_bo
!= NULL
) {
180 brw_bo_unreference(batch
->last_bo
);
181 batch
->last_bo
= NULL
;
183 batch
->last_bo
= batch
->bo
;
185 batch
->bo
= brw_bo_alloc(bufmgr
, "batchbuffer", BATCH_SZ
, 4096);
186 if (!batch
->batch_cpu_map
) {
187 batch
->map
= brw_bo_map(brw
, batch
->bo
, MAP_READ
| MAP_WRITE
);
189 batch
->map_next
= batch
->map
;
191 batch
->state_bo
= brw_bo_alloc(bufmgr
, "statebuffer", STATE_SZ
, 4096);
192 batch
->state_bo
->kflags
=
193 can_do_exec_capture(screen
) ? EXEC_OBJECT_CAPTURE
: 0;
194 if (!batch
->state_cpu_map
) {
196 brw_bo_map(brw
, batch
->state_bo
, MAP_READ
| MAP_WRITE
);
199 /* Avoid making 0 a valid state offset - otherwise the decoder will try
200 * and decode data when we use offset 0 as a null pointer.
202 batch
->state_used
= 1;
204 add_exec_bo(batch
, batch
->bo
);
205 assert(batch
->bo
->index
== 0);
207 batch
->needs_sol_reset
= false;
208 batch
->state_base_address_emitted
= false;
210 /* We don't know what ring the new batch will be sent to until we see the
211 * first BEGIN_BATCH or BEGIN_BATCH_BLT. Mark it as unknown.
213 batch
->ring
= UNKNOWN_RING
;
215 if (batch
->state_batch_sizes
)
216 _mesa_hash_table_clear(batch
->state_batch_sizes
, NULL
);
220 intel_batchbuffer_reset_and_clear_render_cache(struct brw_context
*brw
)
222 intel_batchbuffer_reset(brw
);
223 brw_render_cache_set_clear(brw
);
227 intel_batchbuffer_save_state(struct brw_context
*brw
)
229 brw
->batch
.saved
.map_next
= brw
->batch
.map_next
;
230 brw
->batch
.saved
.batch_reloc_count
= brw
->batch
.batch_relocs
.reloc_count
;
231 brw
->batch
.saved
.state_reloc_count
= brw
->batch
.state_relocs
.reloc_count
;
232 brw
->batch
.saved
.exec_count
= brw
->batch
.exec_count
;
236 intel_batchbuffer_reset_to_saved(struct brw_context
*brw
)
238 for (int i
= brw
->batch
.saved
.exec_count
;
239 i
< brw
->batch
.exec_count
; i
++) {
240 brw_bo_unreference(brw
->batch
.exec_bos
[i
]);
242 brw
->batch
.batch_relocs
.reloc_count
= brw
->batch
.saved
.batch_reloc_count
;
243 brw
->batch
.state_relocs
.reloc_count
= brw
->batch
.saved
.state_reloc_count
;
244 brw
->batch
.exec_count
= brw
->batch
.saved
.exec_count
;
246 brw
->batch
.map_next
= brw
->batch
.saved
.map_next
;
247 if (USED_BATCH(brw
->batch
) == 0)
248 brw
->batch
.ring
= UNKNOWN_RING
;
252 intel_batchbuffer_free(struct intel_batchbuffer
*batch
)
254 free(batch
->batch_cpu_map
);
255 free(batch
->state_cpu_map
);
257 for (int i
= 0; i
< batch
->exec_count
; i
++) {
258 brw_bo_unreference(batch
->exec_bos
[i
]);
260 free(batch
->batch_relocs
.relocs
);
261 free(batch
->state_relocs
.relocs
);
262 free(batch
->exec_bos
);
263 free(batch
->validation_list
);
265 brw_bo_unreference(batch
->last_bo
);
266 brw_bo_unreference(batch
->bo
);
267 brw_bo_unreference(batch
->state_bo
);
268 if (batch
->state_batch_sizes
)
269 _mesa_hash_table_destroy(batch
->state_batch_sizes
, NULL
);
273 replace_bo_in_reloc_list(struct brw_reloc_list
*rlist
,
274 uint32_t old_handle
, uint32_t new_handle
)
276 for (int i
= 0; i
< rlist
->reloc_count
; i
++) {
277 if (rlist
->relocs
[i
].target_handle
== old_handle
)
278 rlist
->relocs
[i
].target_handle
= new_handle
;
283 * Grow either the batch or state buffer to a new larger size.
285 * We can't actually grow buffers, so we allocate a new one, copy over
286 * the existing contents, and update our lists to refer to the new one.
288 * Note that this is only temporary - each new batch recreates the buffers
289 * at their original target size (BATCH_SZ or STATE_SZ).
292 grow_buffer(struct brw_context
*brw
,
293 struct brw_bo
**bo_ptr
,
295 uint32_t **cpu_map_ptr
,
296 unsigned existing_bytes
,
299 struct intel_batchbuffer
*batch
= &brw
->batch
;
300 struct brw_bufmgr
*bufmgr
= brw
->bufmgr
;
302 uint32_t *old_map
= *map_ptr
;
303 struct brw_bo
*old_bo
= *bo_ptr
;
305 struct brw_bo
*new_bo
= brw_bo_alloc(bufmgr
, old_bo
->name
, new_size
, 4096);
308 perf_debug("Growing %s - ran out of space\n", old_bo
->name
);
310 /* Copy existing data to the new larger buffer */
312 *cpu_map_ptr
= new_map
= realloc(*cpu_map_ptr
, new_size
);
314 new_map
= brw_bo_map(brw
, new_bo
, MAP_READ
| MAP_WRITE
);
315 memcpy(new_map
, old_map
, existing_bytes
);
318 /* Try to put the new BO at the same GTT offset as the old BO (which
319 * we're throwing away, so it doesn't need to be there).
321 * This guarantees that our relocations continue to work: values we've
322 * already written into the buffer, values we're going to write into the
323 * buffer, and the validation/relocation lists all will match.
325 new_bo
->gtt_offset
= old_bo
->gtt_offset
;
326 new_bo
->index
= old_bo
->index
;
328 /* Batch/state buffers are per-context, and if we've run out of space,
329 * we must have actually used them before, so...they will be in the list.
331 assert(old_bo
->index
< batch
->exec_count
);
332 assert(batch
->exec_bos
[old_bo
->index
] == old_bo
);
334 /* Update the validation list to use the new BO. */
335 batch
->exec_bos
[old_bo
->index
] = new_bo
;
336 batch
->validation_list
[old_bo
->index
].handle
= new_bo
->gem_handle
;
337 brw_bo_reference(new_bo
);
338 brw_bo_unreference(old_bo
);
340 if (!batch
->use_batch_first
) {
341 /* We're not using I915_EXEC_HANDLE_LUT, which means we need to go
342 * update the relocation list entries to point at the new BO as well.
343 * (With newer kernels, the "handle" is an offset into the validation
344 * list, which remains unchanged, so we can skip this.)
346 replace_bo_in_reloc_list(&batch
->batch_relocs
,
347 old_bo
->gem_handle
, new_bo
->gem_handle
);
348 replace_bo_in_reloc_list(&batch
->state_relocs
,
349 old_bo
->gem_handle
, new_bo
->gem_handle
);
352 /* Drop the *bo_ptr reference. This should free the old BO. */
353 brw_bo_unreference(old_bo
);
360 intel_batchbuffer_require_space(struct brw_context
*brw
, GLuint sz
,
361 enum brw_gpu_ring ring
)
363 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
364 struct intel_batchbuffer
*batch
= &brw
->batch
;
366 /* If we're switching rings, implicitly flush the batch. */
367 if (unlikely(ring
!= brw
->batch
.ring
) && brw
->batch
.ring
!= UNKNOWN_RING
&&
369 intel_batchbuffer_flush(brw
);
372 const unsigned batch_used
= USED_BATCH(*batch
) * 4;
373 if (batch_used
+ sz
>= BATCH_SZ
) {
374 if (!batch
->no_wrap
) {
375 intel_batchbuffer_flush(brw
);
377 const unsigned new_size
=
378 MIN2(batch
->bo
->size
+ batch
->bo
->size
/ 2, MAX_BATCH_SIZE
);
379 grow_buffer(brw
, &batch
->bo
, &batch
->map
, &batch
->batch_cpu_map
,
380 batch_used
, new_size
);
381 batch
->map_next
= (void *) batch
->map
+ batch_used
;
382 assert(batch_used
+ sz
< batch
->bo
->size
);
386 /* The intel_batchbuffer_flush() calls above might have changed
387 * brw->batch.ring to UNKNOWN_RING, so we need to set it here at the end.
389 brw
->batch
.ring
= ring
;
394 #define BLUE_HEADER CSI "0;44m"
395 #define NORMAL CSI "0m"
399 decode_struct(struct brw_context
*brw
, struct gen_spec
*spec
,
400 const char *struct_name
, uint32_t *data
,
401 uint32_t gtt_offset
, uint32_t offset
, bool color
)
403 struct gen_group
*group
= gen_spec_find_struct(spec
, struct_name
);
407 fprintf(stderr
, "%s\n", struct_name
);
408 gen_print_group(stderr
, group
, gtt_offset
+ offset
,
409 &data
[offset
/ 4], color
);
413 decode_structs(struct brw_context
*brw
, struct gen_spec
*spec
,
414 const char *struct_name
,
415 uint32_t *data
, uint32_t gtt_offset
, uint32_t offset
,
416 int struct_size
, bool color
)
418 struct gen_group
*group
= gen_spec_find_struct(spec
, struct_name
);
422 int entries
= brw_state_batch_size(brw
, offset
) / struct_size
;
423 for (int i
= 0; i
< entries
; i
++) {
424 fprintf(stderr
, "%s %d\n", struct_name
, i
);
425 gen_print_group(stderr
, group
, gtt_offset
+ offset
,
426 &data
[(offset
+ i
* struct_size
) / 4], color
);
431 do_batch_dump(struct brw_context
*brw
)
433 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
434 struct intel_batchbuffer
*batch
= &brw
->batch
;
435 struct gen_spec
*spec
= gen_spec_load(&brw
->screen
->devinfo
);
437 if (batch
->ring
!= RENDER_RING
)
440 uint32_t *batch_data
= brw_bo_map(brw
, batch
->bo
, MAP_READ
);
441 uint32_t *state
= brw_bo_map(brw
, batch
->state_bo
, MAP_READ
);
442 if (batch_data
== NULL
|| state
== NULL
) {
443 fprintf(stderr
, "WARNING: failed to map batchbuffer/statebuffer\n");
447 uint32_t *end
= batch_data
+ USED_BATCH(*batch
);
448 uint32_t batch_gtt_offset
= batch
->bo
->gtt_offset
;
449 uint32_t state_gtt_offset
= batch
->state_bo
->gtt_offset
;
452 bool color
= INTEL_DEBUG
& DEBUG_COLOR
;
453 const char *header_color
= color
? BLUE_HEADER
: "";
454 const char *reset_color
= color
? NORMAL
: "";
456 for (uint32_t *p
= batch_data
; p
< end
; p
+= length
) {
457 struct gen_group
*inst
= gen_spec_find_instruction(spec
, p
);
458 length
= gen_group_get_length(inst
, p
);
459 assert(inst
== NULL
|| length
> 0);
460 length
= MAX2(1, length
);
462 fprintf(stderr
, "unknown instruction %08x\n", p
[0]);
466 uint64_t offset
= batch_gtt_offset
+ 4 * (p
- batch_data
);
468 fprintf(stderr
, "%s0x%08"PRIx64
": 0x%08x: %-80s%s\n", header_color
,
469 offset
, p
[0], gen_group_get_name(inst
), reset_color
);
471 gen_print_group(stderr
, inst
, offset
, p
, color
);
473 switch (gen_group_get_opcode(inst
) >> 16) {
474 case _3DSTATE_PIPELINED_POINTERS
:
475 /* Note: these Gen4-5 pointers are full relocations rather than
476 * offsets from the start of the statebuffer. So we need to subtract
477 * gtt_offset (the start of the statebuffer) to obtain an offset we
478 * can add to the map and get at the data.
480 decode_struct(brw
, spec
, "VS_STATE", state
, state_gtt_offset
,
481 (p
[1] & ~0x1fu
) - state_gtt_offset
, color
);
483 decode_struct(brw
, spec
, "GS_STATE", state
, state_gtt_offset
,
484 (p
[2] & ~0x1fu
) - state_gtt_offset
, color
);
487 decode_struct(brw
, spec
, "CLIP_STATE", state
, state_gtt_offset
,
488 (p
[3] & ~0x1fu
) - state_gtt_offset
, color
);
490 decode_struct(brw
, spec
, "SF_STATE", state
, state_gtt_offset
,
491 (p
[4] & ~0x1fu
) - state_gtt_offset
, color
);
492 decode_struct(brw
, spec
, "WM_STATE", state
, state_gtt_offset
,
493 (p
[5] & ~0x1fu
) - state_gtt_offset
, color
);
494 decode_struct(brw
, spec
, "COLOR_CALC_STATE", state
, state_gtt_offset
,
495 (p
[6] & ~0x3fu
) - state_gtt_offset
, color
);
497 case _3DSTATE_BINDING_TABLE_POINTERS_VS
:
498 case _3DSTATE_BINDING_TABLE_POINTERS_HS
:
499 case _3DSTATE_BINDING_TABLE_POINTERS_DS
:
500 case _3DSTATE_BINDING_TABLE_POINTERS_GS
:
501 case _3DSTATE_BINDING_TABLE_POINTERS_PS
: {
502 struct gen_group
*group
=
503 gen_spec_find_struct(spec
, "RENDER_SURFACE_STATE");
507 uint32_t bt_offset
= p
[1] & ~0x1fu
;
508 int bt_entries
= brw_state_batch_size(brw
, bt_offset
) / 4;
509 uint32_t *bt_pointers
= &state
[bt_offset
/ 4];
510 for (int i
= 0; i
< bt_entries
; i
++) {
511 fprintf(stderr
, "SURFACE_STATE - BTI = %d\n", i
);
512 gen_print_group(stderr
, group
, state_gtt_offset
+ bt_pointers
[i
],
513 &state
[bt_pointers
[i
] / 4], color
);
517 case _3DSTATE_SAMPLER_STATE_POINTERS_VS
:
518 case _3DSTATE_SAMPLER_STATE_POINTERS_HS
:
519 case _3DSTATE_SAMPLER_STATE_POINTERS_DS
:
520 case _3DSTATE_SAMPLER_STATE_POINTERS_GS
:
521 case _3DSTATE_SAMPLER_STATE_POINTERS_PS
:
522 decode_structs(brw
, spec
, "SAMPLER_STATE", state
,
523 state_gtt_offset
, p
[1] & ~0x1fu
, 4 * 4, color
);
525 case _3DSTATE_VIEWPORT_STATE_POINTERS
:
526 decode_structs(brw
, spec
, "CLIP_VIEWPORT", state
,
527 state_gtt_offset
, p
[1] & ~0x3fu
, 4 * 4, color
);
528 decode_structs(brw
, spec
, "SF_VIEWPORT", state
,
529 state_gtt_offset
, p
[1] & ~0x3fu
, 8 * 4, color
);
530 decode_structs(brw
, spec
, "CC_VIEWPORT", state
,
531 state_gtt_offset
, p
[3] & ~0x3fu
, 2 * 4, color
);
533 case _3DSTATE_VIEWPORT_STATE_POINTERS_CC
:
534 decode_structs(brw
, spec
, "CC_VIEWPORT", state
,
535 state_gtt_offset
, p
[1] & ~0x3fu
, 2 * 4, color
);
537 case _3DSTATE_VIEWPORT_STATE_POINTERS_SF_CL
:
538 decode_structs(brw
, spec
, "SF_CLIP_VIEWPORT", state
,
539 state_gtt_offset
, p
[1] & ~0x3fu
, 16 * 4, color
);
541 case _3DSTATE_SCISSOR_STATE_POINTERS
:
542 decode_structs(brw
, spec
, "SCISSOR_RECT", state
,
543 state_gtt_offset
, p
[1] & ~0x1fu
, 2 * 4, color
);
545 case _3DSTATE_BLEND_STATE_POINTERS
:
546 /* TODO: handle Gen8+ extra dword at the beginning */
547 decode_structs(brw
, spec
, "BLEND_STATE", state
,
548 state_gtt_offset
, p
[1] & ~0x3fu
, 8 * 4, color
);
550 case _3DSTATE_CC_STATE_POINTERS
:
551 if (devinfo
->gen
>= 7) {
552 decode_struct(brw
, spec
, "COLOR_CALC_STATE", state
,
553 state_gtt_offset
, p
[1] & ~0x3fu
, color
);
554 } else if (devinfo
->gen
== 6) {
555 decode_structs(brw
, spec
, "BLEND_STATE", state
,
556 state_gtt_offset
, p
[1] & ~0x3fu
, 2 * 4, color
);
557 decode_struct(brw
, spec
, "DEPTH_STENCIL_STATE", state
,
558 state_gtt_offset
, p
[2] & ~0x3fu
, color
);
559 decode_struct(brw
, spec
, "COLOR_CALC_STATE", state
,
560 state_gtt_offset
, p
[3] & ~0x3fu
, color
);
563 case _3DSTATE_DEPTH_STENCIL_STATE_POINTERS
:
564 decode_struct(brw
, spec
, "DEPTH_STENCIL_STATE", state
,
565 state_gtt_offset
, p
[1] & ~0x3fu
, color
);
570 brw_bo_unmap(batch
->bo
);
571 brw_bo_unmap(batch
->state_bo
);
574 static void do_batch_dump(struct brw_context
*brw
) { }
578 * Called when starting a new batch buffer.
581 brw_new_batch(struct brw_context
*brw
)
583 /* Unreference any BOs held by the previous batch, and reset counts. */
584 for (int i
= 0; i
< brw
->batch
.exec_count
; i
++) {
585 brw_bo_unreference(brw
->batch
.exec_bos
[i
]);
586 brw
->batch
.exec_bos
[i
] = NULL
;
588 brw
->batch
.batch_relocs
.reloc_count
= 0;
589 brw
->batch
.state_relocs
.reloc_count
= 0;
590 brw
->batch
.exec_count
= 0;
591 brw
->batch
.aperture_space
= 0;
593 brw_bo_unreference(brw
->batch
.state_bo
);
595 /* Create a new batchbuffer and reset the associated state: */
596 intel_batchbuffer_reset_and_clear_render_cache(brw
);
598 /* If the kernel supports hardware contexts, then most hardware state is
599 * preserved between batches; we only need to re-emit state that is required
600 * to be in every batch. Otherwise we need to re-emit all the state that
601 * would otherwise be stored in the context (which for all intents and
602 * purposes means everything).
604 if (brw
->hw_ctx
== 0)
605 brw
->ctx
.NewDriverState
|= BRW_NEW_CONTEXT
;
607 brw
->ctx
.NewDriverState
|= BRW_NEW_BATCH
;
609 brw
->ib
.index_size
= -1;
611 /* We need to periodically reap the shader time results, because rollover
612 * happens every few seconds. We also want to see results every once in a
613 * while, because many programs won't cleanly destroy our context, so the
614 * end-of-run printout may not happen.
616 if (INTEL_DEBUG
& DEBUG_SHADER_TIME
)
617 brw_collect_and_report_shader_time(brw
);
621 * Called from intel_batchbuffer_flush before emitting MI_BATCHBUFFER_END and
624 * This function can emit state (say, to preserve registers that aren't saved
625 * between batches). All of this state MUST fit in the reserved space at the
626 * end of the batchbuffer. If you add more GPU state, increase the reserved
627 * space by updating the BATCH_RESERVED macro.
630 brw_finish_batch(struct brw_context
*brw
)
632 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
634 brw
->batch
.no_wrap
= true;
636 /* Capture the closing pipeline statistics register values necessary to
637 * support query objects (in the non-hardware context world).
639 brw_emit_query_end(brw
);
641 if (brw
->batch
.ring
== RENDER_RING
) {
642 /* Work around L3 state leaks into contexts set MI_RESTORE_INHIBIT which
643 * assume that the L3 cache is configured according to the hardware
646 if (devinfo
->gen
>= 7)
647 gen7_restore_default_l3_config(brw
);
649 if (devinfo
->is_haswell
) {
650 /* From the Haswell PRM, Volume 2b, Command Reference: Instructions,
651 * 3DSTATE_CC_STATE_POINTERS > "Note":
653 * "SW must program 3DSTATE_CC_STATE_POINTERS command at the end of every
654 * 3D batch buffer followed by a PIPE_CONTROL with RC flush and CS stall."
656 * From the example in the docs, it seems to expect a regular pipe control
657 * flush here as well. We may have done it already, but meh.
659 * See also WaAvoidRCZCounterRollover.
661 brw_emit_mi_flush(brw
);
663 OUT_BATCH(_3DSTATE_CC_STATE_POINTERS
<< 16 | (2 - 2));
664 OUT_BATCH(brw
->cc
.state_offset
| 1);
666 brw_emit_pipe_control_flush(brw
, PIPE_CONTROL_RENDER_TARGET_FLUSH
|
667 PIPE_CONTROL_CS_STALL
);
671 /* Mark the end of the buffer. */
672 intel_batchbuffer_emit_dword(&brw
->batch
, MI_BATCH_BUFFER_END
);
673 if (USED_BATCH(brw
->batch
) & 1) {
674 /* Round batchbuffer usage to 2 DWORDs. */
675 intel_batchbuffer_emit_dword(&brw
->batch
, MI_NOOP
);
678 brw
->batch
.no_wrap
= false;
682 throttle(struct brw_context
*brw
)
684 /* Wait for the swapbuffers before the one we just emitted, so we
685 * don't get too many swaps outstanding for apps that are GPU-heavy
688 * We're using intelDRI2Flush (called from the loader before
689 * swapbuffer) and glFlush (for front buffer rendering) as the
690 * indicator that a frame is done and then throttle when we get
691 * here as we prepare to render the next frame. At this point for
692 * round trips for swap/copy and getting new buffers are done and
693 * we'll spend less time waiting on the GPU.
695 * Unfortunately, we don't have a handle to the batch containing
696 * the swap, and getting our hands on that doesn't seem worth it,
697 * so we just use the first batch we emitted after the last swap.
699 if (brw
->need_swap_throttle
&& brw
->throttle_batch
[0]) {
700 if (brw
->throttle_batch
[1]) {
701 if (!brw
->disable_throttling
) {
702 /* Pass NULL rather than brw so we avoid perf_debug warnings;
703 * stalling is common and expected here...
705 brw_bo_wait_rendering(brw
->throttle_batch
[1]);
707 brw_bo_unreference(brw
->throttle_batch
[1]);
709 brw
->throttle_batch
[1] = brw
->throttle_batch
[0];
710 brw
->throttle_batch
[0] = NULL
;
711 brw
->need_swap_throttle
= false;
712 /* Throttling here is more precise than the throttle ioctl, so skip it */
713 brw
->need_flush_throttle
= false;
716 if (brw
->need_flush_throttle
) {
717 __DRIscreen
*dri_screen
= brw
->screen
->driScrnPriv
;
718 drmCommandNone(dri_screen
->fd
, DRM_I915_GEM_THROTTLE
);
719 brw
->need_flush_throttle
= false;
725 struct intel_batchbuffer
*batch
,
732 struct drm_i915_gem_execbuffer2 execbuf
= {
733 .buffers_ptr
= (uintptr_t) batch
->validation_list
,
734 .buffer_count
= batch
->exec_count
,
735 .batch_start_offset
= 0,
738 .rsvd1
= ctx_id
, /* rsvd1 is actually the context ID */
741 unsigned long cmd
= DRM_IOCTL_I915_GEM_EXECBUFFER2
;
743 if (in_fence
!= -1) {
744 execbuf
.rsvd2
= in_fence
;
745 execbuf
.flags
|= I915_EXEC_FENCE_IN
;
748 if (out_fence
!= NULL
) {
749 cmd
= DRM_IOCTL_I915_GEM_EXECBUFFER2_WR
;
751 execbuf
.flags
|= I915_EXEC_FENCE_OUT
;
754 int ret
= drmIoctl(fd
, cmd
, &execbuf
);
758 for (int i
= 0; i
< batch
->exec_count
; i
++) {
759 struct brw_bo
*bo
= batch
->exec_bos
[i
];
764 /* Update brw_bo::gtt_offset */
765 if (batch
->validation_list
[i
].offset
!= bo
->gtt_offset
) {
766 DBG("BO %d migrated: 0x%" PRIx64
" -> 0x%llx\n",
767 bo
->gem_handle
, bo
->gtt_offset
,
768 batch
->validation_list
[i
].offset
);
769 bo
->gtt_offset
= batch
->validation_list
[i
].offset
;
773 if (ret
== 0 && out_fence
!= NULL
)
774 *out_fence
= execbuf
.rsvd2
>> 32;
780 submit_batch(struct brw_context
*brw
, int in_fence_fd
, int *out_fence_fd
)
782 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
783 __DRIscreen
*dri_screen
= brw
->screen
->driScrnPriv
;
784 struct intel_batchbuffer
*batch
= &brw
->batch
;
787 if (batch
->batch_cpu_map
) {
788 void *bo_map
= brw_bo_map(brw
, batch
->bo
, MAP_WRITE
);
789 memcpy(bo_map
, batch
->batch_cpu_map
, 4 * USED_BATCH(*batch
));
792 if (batch
->state_cpu_map
) {
793 void *bo_map
= brw_bo_map(brw
, batch
->state_bo
, MAP_WRITE
);
794 memcpy(bo_map
, batch
->state_cpu_map
, batch
->state_used
);
797 brw_bo_unmap(batch
->bo
);
798 brw_bo_unmap(batch
->state_bo
);
800 if (!brw
->screen
->no_hw
) {
801 /* The requirement for using I915_EXEC_NO_RELOC are:
803 * The addresses written in the objects must match the corresponding
804 * reloc.gtt_offset which in turn must match the corresponding
807 * Any render targets written to in the batch must be flagged with
810 * To avoid stalling, execobject.offset should match the current
811 * address of that object within the active context.
813 int flags
= I915_EXEC_NO_RELOC
;
815 if (devinfo
->gen
>= 6 && batch
->ring
== BLT_RING
) {
816 flags
|= I915_EXEC_BLT
;
818 flags
|= I915_EXEC_RENDER
;
820 if (batch
->needs_sol_reset
)
821 flags
|= I915_EXEC_GEN7_SOL_RESET
;
823 uint32_t hw_ctx
= batch
->ring
== RENDER_RING
? brw
->hw_ctx
: 0;
825 /* Set statebuffer relocations */
826 const unsigned state_index
= batch
->state_bo
->index
;
827 if (state_index
< batch
->exec_count
&&
828 batch
->exec_bos
[state_index
] == batch
->state_bo
) {
829 struct drm_i915_gem_exec_object2
*entry
=
830 &batch
->validation_list
[state_index
];
831 assert(entry
->handle
== batch
->state_bo
->gem_handle
);
832 entry
->relocation_count
= batch
->state_relocs
.reloc_count
;
833 entry
->relocs_ptr
= (uintptr_t) batch
->state_relocs
.relocs
;
836 /* Set batchbuffer relocations */
837 struct drm_i915_gem_exec_object2
*entry
= &batch
->validation_list
[0];
838 assert(entry
->handle
== batch
->bo
->gem_handle
);
839 entry
->relocation_count
= batch
->batch_relocs
.reloc_count
;
840 entry
->relocs_ptr
= (uintptr_t) batch
->batch_relocs
.relocs
;
842 if (batch
->use_batch_first
) {
843 flags
|= I915_EXEC_BATCH_FIRST
| I915_EXEC_HANDLE_LUT
;
845 /* Move the batch to the end of the validation list */
846 struct drm_i915_gem_exec_object2 tmp
;
847 const unsigned index
= batch
->exec_count
- 1;
850 *entry
= batch
->validation_list
[index
];
851 batch
->validation_list
[index
] = tmp
;
854 ret
= execbuffer(dri_screen
->fd
, batch
, hw_ctx
,
855 4 * USED_BATCH(*batch
),
856 in_fence_fd
, out_fence_fd
, flags
);
861 if (unlikely(INTEL_DEBUG
& DEBUG_BATCH
))
864 if (brw
->ctx
.Const
.ResetStrategy
== GL_LOSE_CONTEXT_ON_RESET_ARB
)
865 brw_check_for_reset(brw
);
868 fprintf(stderr
, "i965: Failed to submit batchbuffer: %s\n",
877 * The in_fence_fd is ignored if -1. Otherwise this function takes ownership
880 * The out_fence_fd is ignored if NULL. Otherwise, the caller takes ownership
881 * of the returned fd.
884 _intel_batchbuffer_flush_fence(struct brw_context
*brw
,
885 int in_fence_fd
, int *out_fence_fd
,
886 const char *file
, int line
)
890 if (USED_BATCH(brw
->batch
) == 0)
893 /* Check that we didn't just wrap our batchbuffer at a bad time. */
894 assert(!brw
->batch
.no_wrap
);
896 brw_finish_batch(brw
);
897 intel_upload_finish(brw
);
899 if (brw
->throttle_batch
[0] == NULL
) {
900 brw
->throttle_batch
[0] = brw
->batch
.bo
;
901 brw_bo_reference(brw
->throttle_batch
[0]);
904 if (unlikely(INTEL_DEBUG
& (DEBUG_BATCH
| DEBUG_SUBMIT
))) {
905 int bytes_for_commands
= 4 * USED_BATCH(brw
->batch
);
906 int bytes_for_state
= brw
->batch
.state_used
;
907 fprintf(stderr
, "%19s:%-3d: Batchbuffer flush with %5db (%0.1f%%) (pkt),"
908 " %5db (%0.1f%%) (state), %4d BOs (%0.1fMb aperture),"
909 " %4d batch relocs, %4d state relocs\n", file
, line
,
910 bytes_for_commands
, 100.0f
* bytes_for_commands
/ BATCH_SZ
,
911 bytes_for_state
, 100.0f
* bytes_for_state
/ STATE_SZ
,
912 brw
->batch
.exec_count
,
913 (float) brw
->batch
.aperture_space
/ (1024 * 1024),
914 brw
->batch
.batch_relocs
.reloc_count
,
915 brw
->batch
.state_relocs
.reloc_count
);
918 ret
= submit_batch(brw
, in_fence_fd
, out_fence_fd
);
920 if (unlikely(INTEL_DEBUG
& DEBUG_SYNC
)) {
921 fprintf(stderr
, "waiting for idle\n");
922 brw_bo_wait_rendering(brw
->batch
.bo
);
925 /* Start a new batch buffer. */
932 brw_batch_has_aperture_space(struct brw_context
*brw
, unsigned extra_space
)
934 return brw
->batch
.aperture_space
+ extra_space
<=
935 brw
->screen
->aperture_threshold
;
939 brw_batch_references(struct intel_batchbuffer
*batch
, struct brw_bo
*bo
)
941 unsigned index
= READ_ONCE(bo
->index
);
942 if (index
< batch
->exec_count
&& batch
->exec_bos
[index
] == bo
)
945 for (int i
= 0; i
< batch
->exec_count
; i
++) {
946 if (batch
->exec_bos
[i
] == bo
)
952 /* This is the only way buffers get added to the validate list.
955 emit_reloc(struct intel_batchbuffer
*batch
,
956 struct brw_reloc_list
*rlist
, uint32_t offset
,
957 struct brw_bo
*target
, uint32_t target_offset
,
958 unsigned int reloc_flags
)
960 assert(target
!= NULL
);
962 if (rlist
->reloc_count
== rlist
->reloc_array_size
) {
963 rlist
->reloc_array_size
*= 2;
964 rlist
->relocs
= realloc(rlist
->relocs
,
965 rlist
->reloc_array_size
*
966 sizeof(struct drm_i915_gem_relocation_entry
));
969 unsigned int index
= add_exec_bo(batch
, target
);
970 struct drm_i915_gem_exec_object2
*entry
= &batch
->validation_list
[index
];
973 entry
->flags
|= reloc_flags
& batch
->valid_reloc_flags
;
975 rlist
->relocs
[rlist
->reloc_count
++] =
976 (struct drm_i915_gem_relocation_entry
) {
978 .delta
= target_offset
,
979 .target_handle
= batch
->use_batch_first
? index
: target
->gem_handle
,
980 .presumed_offset
= entry
->offset
,
983 /* Using the old buffer offset, write in what the right data would be, in
984 * case the buffer doesn't move and we can short-circuit the relocation
985 * processing in the kernel
987 return entry
->offset
+ target_offset
;
991 brw_batch_reloc(struct intel_batchbuffer
*batch
, uint32_t batch_offset
,
992 struct brw_bo
*target
, uint32_t target_offset
,
993 unsigned int reloc_flags
)
995 assert(batch_offset
<= batch
->bo
->size
- sizeof(uint32_t));
997 return emit_reloc(batch
, &batch
->batch_relocs
, batch_offset
,
998 target
, target_offset
, reloc_flags
);
1002 brw_state_reloc(struct intel_batchbuffer
*batch
, uint32_t state_offset
,
1003 struct brw_bo
*target
, uint32_t target_offset
,
1004 unsigned int reloc_flags
)
1006 assert(state_offset
<= batch
->state_bo
->size
- sizeof(uint32_t));
1008 return emit_reloc(batch
, &batch
->state_relocs
, state_offset
,
1009 target
, target_offset
, reloc_flags
);
1014 brw_state_batch_size(struct brw_context
*brw
, uint32_t offset
)
1016 struct hash_entry
*entry
=
1017 _mesa_hash_table_search(brw
->batch
.state_batch_sizes
,
1018 (void *) (uintptr_t) offset
);
1019 return entry
? (uintptr_t) entry
->data
: 0;
1023 * Reserve some space in the statebuffer, or flush.
1025 * This is used to estimate when we're near the end of the batch,
1026 * so we can flush early.
1029 brw_require_statebuffer_space(struct brw_context
*brw
, int size
)
1031 if (brw
->batch
.state_used
+ size
>= STATE_SZ
)
1032 intel_batchbuffer_flush(brw
);
1036 * Allocates a block of space in the batchbuffer for indirect state.
1039 brw_state_batch(struct brw_context
*brw
,
1042 uint32_t *out_offset
)
1044 struct intel_batchbuffer
*batch
= &brw
->batch
;
1046 assert(size
< batch
->bo
->size
);
1048 uint32_t offset
= ALIGN(batch
->state_used
, alignment
);
1050 if (offset
+ size
>= STATE_SZ
) {
1051 if (!batch
->no_wrap
) {
1052 intel_batchbuffer_flush(brw
);
1053 offset
= ALIGN(batch
->state_used
, alignment
);
1055 const unsigned new_size
=
1056 MIN2(batch
->state_bo
->size
+ batch
->state_bo
->size
/ 2,
1058 grow_buffer(brw
, &batch
->state_bo
, &batch
->state_map
,
1059 &batch
->state_cpu_map
, batch
->state_used
, new_size
);
1060 assert(offset
+ size
< batch
->state_bo
->size
);
1064 if (unlikely(INTEL_DEBUG
& DEBUG_BATCH
)) {
1065 _mesa_hash_table_insert(batch
->state_batch_sizes
,
1066 (void *) (uintptr_t) offset
,
1067 (void *) (uintptr_t) size
);
1070 batch
->state_used
= offset
+ size
;
1072 *out_offset
= offset
;
1073 return batch
->state_map
+ (offset
>> 2);
1077 intel_batchbuffer_data(struct brw_context
*brw
,
1078 const void *data
, GLuint bytes
, enum brw_gpu_ring ring
)
1080 assert((bytes
& 3) == 0);
1081 intel_batchbuffer_require_space(brw
, bytes
, ring
);
1082 memcpy(brw
->batch
.map_next
, data
, bytes
);
1083 brw
->batch
.map_next
+= bytes
>> 2;
1087 load_sized_register_mem(struct brw_context
*brw
,
1093 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1096 /* MI_LOAD_REGISTER_MEM only exists on Gen7+. */
1097 assert(devinfo
->gen
>= 7);
1099 if (devinfo
->gen
>= 8) {
1100 BEGIN_BATCH(4 * size
);
1101 for (i
= 0; i
< size
; i
++) {
1102 OUT_BATCH(GEN7_MI_LOAD_REGISTER_MEM
| (4 - 2));
1103 OUT_BATCH(reg
+ i
* 4);
1104 OUT_RELOC64(bo
, 0, offset
+ i
* 4);
1108 BEGIN_BATCH(3 * size
);
1109 for (i
= 0; i
< size
; i
++) {
1110 OUT_BATCH(GEN7_MI_LOAD_REGISTER_MEM
| (3 - 2));
1111 OUT_BATCH(reg
+ i
* 4);
1112 OUT_RELOC(bo
, 0, offset
+ i
* 4);
1119 brw_load_register_mem(struct brw_context
*brw
,
1124 load_sized_register_mem(brw
, reg
, bo
, offset
, 1);
1128 brw_load_register_mem64(struct brw_context
*brw
,
1133 load_sized_register_mem(brw
, reg
, bo
, offset
, 2);
1137 * Write an arbitrary 32-bit register to a buffer via MI_STORE_REGISTER_MEM.
1140 brw_store_register_mem32(struct brw_context
*brw
,
1141 struct brw_bo
*bo
, uint32_t reg
, uint32_t offset
)
1143 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1145 assert(devinfo
->gen
>= 6);
1147 if (devinfo
->gen
>= 8) {
1149 OUT_BATCH(MI_STORE_REGISTER_MEM
| (4 - 2));
1151 OUT_RELOC64(bo
, RELOC_WRITE
, offset
);
1155 OUT_BATCH(MI_STORE_REGISTER_MEM
| (3 - 2));
1157 OUT_RELOC(bo
, RELOC_WRITE
| RELOC_NEEDS_GGTT
, offset
);
1163 * Write an arbitrary 64-bit register to a buffer via MI_STORE_REGISTER_MEM.
1166 brw_store_register_mem64(struct brw_context
*brw
,
1167 struct brw_bo
*bo
, uint32_t reg
, uint32_t offset
)
1169 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1171 assert(devinfo
->gen
>= 6);
1173 /* MI_STORE_REGISTER_MEM only stores a single 32-bit value, so to
1174 * read a full 64-bit register, we need to do two of them.
1176 if (devinfo
->gen
>= 8) {
1178 OUT_BATCH(MI_STORE_REGISTER_MEM
| (4 - 2));
1180 OUT_RELOC64(bo
, RELOC_WRITE
, offset
);
1181 OUT_BATCH(MI_STORE_REGISTER_MEM
| (4 - 2));
1182 OUT_BATCH(reg
+ sizeof(uint32_t));
1183 OUT_RELOC64(bo
, RELOC_WRITE
, offset
+ sizeof(uint32_t));
1187 OUT_BATCH(MI_STORE_REGISTER_MEM
| (3 - 2));
1189 OUT_RELOC(bo
, RELOC_WRITE
| RELOC_NEEDS_GGTT
, offset
);
1190 OUT_BATCH(MI_STORE_REGISTER_MEM
| (3 - 2));
1191 OUT_BATCH(reg
+ sizeof(uint32_t));
1192 OUT_RELOC(bo
, RELOC_WRITE
| RELOC_NEEDS_GGTT
, offset
+ sizeof(uint32_t));
1198 * Write a 32-bit register using immediate data.
1201 brw_load_register_imm32(struct brw_context
*brw
, uint32_t reg
, uint32_t imm
)
1203 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1205 assert(devinfo
->gen
>= 6);
1208 OUT_BATCH(MI_LOAD_REGISTER_IMM
| (3 - 2));
1215 * Write a 64-bit register using immediate data.
1218 brw_load_register_imm64(struct brw_context
*brw
, uint32_t reg
, uint64_t imm
)
1220 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1222 assert(devinfo
->gen
>= 6);
1225 OUT_BATCH(MI_LOAD_REGISTER_IMM
| (5 - 2));
1227 OUT_BATCH(imm
& 0xffffffff);
1229 OUT_BATCH(imm
>> 32);
1234 * Copies a 32-bit register.
1237 brw_load_register_reg(struct brw_context
*brw
, uint32_t src
, uint32_t dest
)
1239 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1241 assert(devinfo
->gen
>= 8 || devinfo
->is_haswell
);
1244 OUT_BATCH(MI_LOAD_REGISTER_REG
| (3 - 2));
1251 * Copies a 64-bit register.
1254 brw_load_register_reg64(struct brw_context
*brw
, uint32_t src
, uint32_t dest
)
1256 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1258 assert(devinfo
->gen
>= 8 || devinfo
->is_haswell
);
1261 OUT_BATCH(MI_LOAD_REGISTER_REG
| (3 - 2));
1264 OUT_BATCH(MI_LOAD_REGISTER_REG
| (3 - 2));
1265 OUT_BATCH(src
+ sizeof(uint32_t));
1266 OUT_BATCH(dest
+ sizeof(uint32_t));
1271 * Write 32-bits of immediate data to a GPU memory buffer.
1274 brw_store_data_imm32(struct brw_context
*brw
, struct brw_bo
*bo
,
1275 uint32_t offset
, uint32_t imm
)
1277 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1279 assert(devinfo
->gen
>= 6);
1282 OUT_BATCH(MI_STORE_DATA_IMM
| (4 - 2));
1283 if (devinfo
->gen
>= 8)
1284 OUT_RELOC64(bo
, RELOC_WRITE
, offset
);
1286 OUT_BATCH(0); /* MBZ */
1287 OUT_RELOC(bo
, RELOC_WRITE
, offset
);
1294 * Write 64-bits of immediate data to a GPU memory buffer.
1297 brw_store_data_imm64(struct brw_context
*brw
, struct brw_bo
*bo
,
1298 uint32_t offset
, uint64_t imm
)
1300 const struct gen_device_info
*devinfo
= &brw
->screen
->devinfo
;
1302 assert(devinfo
->gen
>= 6);
1305 OUT_BATCH(MI_STORE_DATA_IMM
| (5 - 2));
1306 if (devinfo
->gen
>= 8)
1307 OUT_RELOC64(bo
, 0, offset
);
1309 OUT_BATCH(0); /* MBZ */
1310 OUT_RELOC(bo
, RELOC_WRITE
, offset
);
1312 OUT_BATCH(imm
& 0xffffffffu
);
1313 OUT_BATCH(imm
>> 32);