2 * Copyright 2013 Advanced Micro Devices, Inc.
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 * on the rights to use, copy, modify, merge, publish, distribute, sub
8 * license, and/or sell copies of the Software, and to permit persons to whom
9 * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
21 * USE OR OTHER DEALINGS IN THE SOFTWARE.
28 #include "util/u_memory.h"
29 #include "util/u_upload_mgr.h"
33 boolean
r600_rings_is_buffer_referenced(struct r600_common_context
*ctx
,
34 struct pb_buffer
*buf
,
35 enum radeon_bo_usage usage
)
37 if (ctx
->ws
->cs_is_buffer_referenced(ctx
->gfx
.cs
, buf
, usage
)) {
40 if (ctx
->dma
.cs
&& ctx
->dma
.cs
->cdw
&&
41 ctx
->ws
->cs_is_buffer_referenced(ctx
->dma
.cs
, buf
, usage
)) {
47 void *r600_buffer_map_sync_with_rings(struct r600_common_context
*ctx
,
48 struct r600_resource
*resource
,
51 enum radeon_bo_usage rusage
= RADEON_USAGE_READWRITE
;
54 if (usage
& PIPE_TRANSFER_UNSYNCHRONIZED
) {
55 return ctx
->ws
->buffer_map(resource
->buf
, NULL
, usage
);
58 if (!(usage
& PIPE_TRANSFER_WRITE
)) {
59 /* have to wait for the last write */
60 rusage
= RADEON_USAGE_WRITE
;
63 if (ctx
->gfx
.cs
->cdw
!= ctx
->initial_gfx_cs_size
&&
64 ctx
->ws
->cs_is_buffer_referenced(ctx
->gfx
.cs
,
65 resource
->buf
, rusage
)) {
66 if (usage
& PIPE_TRANSFER_DONTBLOCK
) {
67 ctx
->gfx
.flush(ctx
, RADEON_FLUSH_ASYNC
, NULL
);
70 ctx
->gfx
.flush(ctx
, 0, NULL
);
76 ctx
->ws
->cs_is_buffer_referenced(ctx
->dma
.cs
,
77 resource
->buf
, rusage
)) {
78 if (usage
& PIPE_TRANSFER_DONTBLOCK
) {
79 ctx
->dma
.flush(ctx
, RADEON_FLUSH_ASYNC
, NULL
);
82 ctx
->dma
.flush(ctx
, 0, NULL
);
87 if (busy
|| !ctx
->ws
->buffer_wait(resource
->buf
, 0, rusage
)) {
88 if (usage
& PIPE_TRANSFER_DONTBLOCK
) {
91 /* We will be wait for the GPU. Wait for any offloaded
92 * CS flush to complete to avoid busy-waiting in the winsys. */
93 ctx
->ws
->cs_sync_flush(ctx
->gfx
.cs
);
95 ctx
->ws
->cs_sync_flush(ctx
->dma
.cs
);
99 /* Setting the CS to NULL will prevent doing checks we have done already. */
100 return ctx
->ws
->buffer_map(resource
->buf
, NULL
, usage
);
103 bool r600_init_resource(struct r600_common_screen
*rscreen
,
104 struct r600_resource
*res
,
105 unsigned size
, unsigned alignment
,
106 bool use_reusable_pool
)
108 struct r600_texture
*rtex
= (struct r600_texture
*)res
;
109 struct pb_buffer
*old_buf
, *new_buf
;
110 enum radeon_bo_flag flags
= 0;
112 switch (res
->b
.b
.usage
) {
113 case PIPE_USAGE_STREAM
:
114 flags
= RADEON_FLAG_GTT_WC
;
116 case PIPE_USAGE_STAGING
:
117 /* Transfers are likely to occur more often with these resources. */
118 res
->domains
= RADEON_DOMAIN_GTT
;
120 case PIPE_USAGE_DYNAMIC
:
121 /* Older kernels didn't always flush the HDP cache before
124 if (rscreen
->info
.drm_major
== 2 &&
125 rscreen
->info
.drm_minor
< 40) {
126 res
->domains
= RADEON_DOMAIN_GTT
;
127 flags
|= RADEON_FLAG_GTT_WC
;
130 flags
|= RADEON_FLAG_CPU_ACCESS
;
132 case PIPE_USAGE_DEFAULT
:
133 case PIPE_USAGE_IMMUTABLE
:
135 /* Not listing GTT here improves performance in some apps. */
136 res
->domains
= RADEON_DOMAIN_VRAM
;
137 flags
|= RADEON_FLAG_GTT_WC
;
141 if (res
->b
.b
.target
== PIPE_BUFFER
&&
142 res
->b
.b
.flags
& (PIPE_RESOURCE_FLAG_MAP_PERSISTENT
|
143 PIPE_RESOURCE_FLAG_MAP_COHERENT
)) {
144 /* Use GTT for all persistent mappings with older kernels,
145 * because they didn't always flush the HDP cache before CS
148 * Write-combined CPU mappings are fine, the kernel ensures all CPU
149 * writes finish before the GPU executes a command stream.
151 if (rscreen
->info
.drm_major
== 2 &&
152 rscreen
->info
.drm_minor
< 40)
153 res
->domains
= RADEON_DOMAIN_GTT
;
154 else if (res
->domains
& RADEON_DOMAIN_VRAM
)
155 flags
|= RADEON_FLAG_CPU_ACCESS
;
158 /* Tiled textures are unmappable. Always put them in VRAM. */
159 if (res
->b
.b
.target
!= PIPE_BUFFER
&&
160 rtex
->surface
.level
[0].mode
>= RADEON_SURF_MODE_1D
) {
161 res
->domains
= RADEON_DOMAIN_VRAM
;
162 flags
&= ~RADEON_FLAG_CPU_ACCESS
;
163 flags
|= RADEON_FLAG_NO_CPU_ACCESS
;
166 if (rscreen
->debug_flags
& DBG_NO_WC
)
167 flags
&= ~RADEON_FLAG_GTT_WC
;
169 /* Allocate a new resource. */
170 new_buf
= rscreen
->ws
->buffer_create(rscreen
->ws
, size
, alignment
,
172 res
->domains
, flags
);
177 /* Replace the pointer such that if res->buf wasn't NULL, it won't be
178 * NULL. This should prevent crashes with multiple contexts using
179 * the same buffer where one of the contexts invalidates it while
180 * the others are using it. */
182 res
->buf
= new_buf
; /* should be atomic */
184 if (rscreen
->info
.r600_virtual_address
)
185 res
->gpu_address
= rscreen
->ws
->buffer_get_virtual_address(res
->buf
);
187 res
->gpu_address
= 0;
189 pb_reference(&old_buf
, NULL
);
191 util_range_set_empty(&res
->valid_buffer_range
);
192 res
->TC_L2_dirty
= false;
194 if (rscreen
->debug_flags
& DBG_VM
&& res
->b
.b
.target
== PIPE_BUFFER
) {
195 fprintf(stderr
, "VM start=0x%"PRIX64
" end=0x%"PRIX64
" | Buffer %u bytes\n",
196 res
->gpu_address
, res
->gpu_address
+ res
->buf
->size
,
202 static void r600_buffer_destroy(struct pipe_screen
*screen
,
203 struct pipe_resource
*buf
)
205 struct r600_resource
*rbuffer
= r600_resource(buf
);
207 util_range_destroy(&rbuffer
->valid_buffer_range
);
208 pb_reference(&rbuffer
->buf
, NULL
);
212 static void *r600_buffer_get_transfer(struct pipe_context
*ctx
,
213 struct pipe_resource
*resource
,
216 const struct pipe_box
*box
,
217 struct pipe_transfer
**ptransfer
,
218 void *data
, struct r600_resource
*staging
,
221 struct r600_common_context
*rctx
= (struct r600_common_context
*)ctx
;
222 struct r600_transfer
*transfer
= util_slab_alloc(&rctx
->pool_transfers
);
224 transfer
->transfer
.resource
= resource
;
225 transfer
->transfer
.level
= level
;
226 transfer
->transfer
.usage
= usage
;
227 transfer
->transfer
.box
= *box
;
228 transfer
->transfer
.stride
= 0;
229 transfer
->transfer
.layer_stride
= 0;
230 transfer
->offset
= offset
;
231 transfer
->staging
= staging
;
232 *ptransfer
= &transfer
->transfer
;
236 static bool r600_can_dma_copy_buffer(struct r600_common_context
*rctx
,
237 unsigned dstx
, unsigned srcx
, unsigned size
)
239 bool dword_aligned
= !(dstx
% 4) && !(srcx
% 4) && !(size
% 4);
241 return rctx
->screen
->has_cp_dma
||
242 (dword_aligned
&& (rctx
->dma
.cs
||
243 rctx
->screen
->has_streamout
));
247 static void *r600_buffer_transfer_map(struct pipe_context
*ctx
,
248 struct pipe_resource
*resource
,
251 const struct pipe_box
*box
,
252 struct pipe_transfer
**ptransfer
)
254 struct r600_common_context
*rctx
= (struct r600_common_context
*)ctx
;
255 struct r600_common_screen
*rscreen
= (struct r600_common_screen
*)ctx
->screen
;
256 struct r600_resource
*rbuffer
= r600_resource(resource
);
259 assert(box
->x
+ box
->width
<= resource
->width0
);
261 /* See if the buffer range being mapped has never been initialized,
262 * in which case it can be mapped unsynchronized. */
263 if (!(usage
& PIPE_TRANSFER_UNSYNCHRONIZED
) &&
264 usage
& PIPE_TRANSFER_WRITE
&&
265 !util_ranges_intersect(&rbuffer
->valid_buffer_range
, box
->x
, box
->x
+ box
->width
)) {
266 usage
|= PIPE_TRANSFER_UNSYNCHRONIZED
;
269 /* If discarding the entire range, discard the whole resource instead. */
270 if (usage
& PIPE_TRANSFER_DISCARD_RANGE
&&
271 box
->x
== 0 && box
->width
== resource
->width0
) {
272 usage
|= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE
;
275 if (usage
& PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE
&&
276 !(usage
& PIPE_TRANSFER_UNSYNCHRONIZED
)) {
277 assert(usage
& PIPE_TRANSFER_WRITE
);
279 /* Check if mapping this buffer would cause waiting for the GPU. */
280 if (r600_rings_is_buffer_referenced(rctx
, rbuffer
->buf
, RADEON_USAGE_READWRITE
) ||
281 !rctx
->ws
->buffer_wait(rbuffer
->buf
, 0, RADEON_USAGE_READWRITE
)) {
282 rctx
->invalidate_buffer(&rctx
->b
, &rbuffer
->b
.b
);
284 /* At this point, the buffer is always idle. */
285 usage
|= PIPE_TRANSFER_UNSYNCHRONIZED
;
287 else if ((usage
& PIPE_TRANSFER_DISCARD_RANGE
) &&
288 !(usage
& PIPE_TRANSFER_UNSYNCHRONIZED
) &&
289 !(rscreen
->debug_flags
& DBG_NO_DISCARD_RANGE
) &&
290 r600_can_dma_copy_buffer(rctx
, box
->x
, 0, box
->width
)) {
291 assert(usage
& PIPE_TRANSFER_WRITE
);
293 /* Check if mapping this buffer would cause waiting for the GPU. */
294 if (r600_rings_is_buffer_referenced(rctx
, rbuffer
->buf
, RADEON_USAGE_READWRITE
) ||
295 !rctx
->ws
->buffer_wait(rbuffer
->buf
, 0, RADEON_USAGE_READWRITE
)) {
296 /* Do a wait-free write-only transfer using a temporary buffer. */
298 struct r600_resource
*staging
= NULL
;
300 u_upload_alloc(rctx
->uploader
, 0, box
->width
+ (box
->x
% R600_MAP_BUFFER_ALIGNMENT
),
301 &offset
, (struct pipe_resource
**)&staging
, (void**)&data
);
304 data
+= box
->x
% R600_MAP_BUFFER_ALIGNMENT
;
305 return r600_buffer_get_transfer(ctx
, resource
, level
, usage
, box
,
306 ptransfer
, data
, staging
, offset
);
309 /* At this point, the buffer is always idle (we checked it above). */
310 usage
|= PIPE_TRANSFER_UNSYNCHRONIZED
;
313 /* Using a staging buffer in GTT for larger reads is much faster. */
314 else if ((usage
& PIPE_TRANSFER_READ
) &&
315 !(usage
& PIPE_TRANSFER_WRITE
) &&
316 rbuffer
->domains
== RADEON_DOMAIN_VRAM
&&
317 r600_can_dma_copy_buffer(rctx
, 0, box
->x
, box
->width
)) {
318 struct r600_resource
*staging
;
320 staging
= (struct r600_resource
*) pipe_buffer_create(
321 ctx
->screen
, PIPE_BIND_TRANSFER_READ
, PIPE_USAGE_STAGING
,
322 box
->width
+ (box
->x
% R600_MAP_BUFFER_ALIGNMENT
));
324 /* Copy the VRAM buffer to the staging buffer. */
325 rctx
->dma_copy(ctx
, &staging
->b
.b
, 0,
326 box
->x
% R600_MAP_BUFFER_ALIGNMENT
,
327 0, 0, resource
, level
, box
);
329 data
= r600_buffer_map_sync_with_rings(rctx
, staging
, PIPE_TRANSFER_READ
);
330 data
+= box
->x
% R600_MAP_BUFFER_ALIGNMENT
;
332 return r600_buffer_get_transfer(ctx
, resource
, level
, usage
, box
,
333 ptransfer
, data
, staging
, 0);
337 data
= r600_buffer_map_sync_with_rings(rctx
, rbuffer
, usage
);
343 return r600_buffer_get_transfer(ctx
, resource
, level
, usage
, box
,
344 ptransfer
, data
, NULL
, 0);
347 static void r600_buffer_do_flush_region(struct pipe_context
*ctx
,
348 struct pipe_transfer
*transfer
,
349 const struct pipe_box
*box
)
351 struct r600_common_context
*rctx
= (struct r600_common_context
*)ctx
;
352 struct r600_transfer
*rtransfer
= (struct r600_transfer
*)transfer
;
353 struct r600_resource
*rbuffer
= r600_resource(transfer
->resource
);
355 if (rtransfer
->staging
) {
356 struct pipe_resource
*dst
, *src
;
358 struct pipe_box dma_box
;
360 dst
= transfer
->resource
;
361 src
= &rtransfer
->staging
->b
.b
;
362 soffset
= rtransfer
->offset
+ box
->x
% R600_MAP_BUFFER_ALIGNMENT
;
364 u_box_1d(soffset
, box
->width
, &dma_box
);
366 /* Copy the staging buffer into the original one. */
367 rctx
->dma_copy(ctx
, dst
, 0, box
->x
, 0, 0, src
, 0, &dma_box
);
370 util_range_add(&rbuffer
->valid_buffer_range
, box
->x
,
371 box
->x
+ box
->width
);
374 static void r600_buffer_flush_region(struct pipe_context
*ctx
,
375 struct pipe_transfer
*transfer
,
376 const struct pipe_box
*rel_box
)
378 if (transfer
->usage
& (PIPE_TRANSFER_WRITE
|
379 PIPE_TRANSFER_FLUSH_EXPLICIT
)) {
382 u_box_1d(transfer
->box
.x
+ rel_box
->x
, rel_box
->width
, &box
);
383 r600_buffer_do_flush_region(ctx
, transfer
, &box
);
387 static void r600_buffer_transfer_unmap(struct pipe_context
*ctx
,
388 struct pipe_transfer
*transfer
)
390 struct r600_common_context
*rctx
= (struct r600_common_context
*)ctx
;
391 struct r600_transfer
*rtransfer
= (struct r600_transfer
*)transfer
;
393 if (transfer
->usage
& PIPE_TRANSFER_WRITE
&&
394 !(transfer
->usage
& PIPE_TRANSFER_FLUSH_EXPLICIT
))
395 r600_buffer_do_flush_region(ctx
, transfer
, &transfer
->box
);
397 if (rtransfer
->staging
)
398 pipe_resource_reference((struct pipe_resource
**)&rtransfer
->staging
, NULL
);
400 util_slab_free(&rctx
->pool_transfers
, transfer
);
403 static const struct u_resource_vtbl r600_buffer_vtbl
=
405 NULL
, /* get_handle */
406 r600_buffer_destroy
, /* resource_destroy */
407 r600_buffer_transfer_map
, /* transfer_map */
408 r600_buffer_flush_region
, /* transfer_flush_region */
409 r600_buffer_transfer_unmap
, /* transfer_unmap */
410 NULL
/* transfer_inline_write */
413 static struct r600_resource
*
414 r600_alloc_buffer_struct(struct pipe_screen
*screen
,
415 const struct pipe_resource
*templ
)
417 struct r600_resource
*rbuffer
;
419 rbuffer
= MALLOC_STRUCT(r600_resource
);
421 rbuffer
->b
.b
= *templ
;
422 pipe_reference_init(&rbuffer
->b
.b
.reference
, 1);
423 rbuffer
->b
.b
.screen
= screen
;
424 rbuffer
->b
.vtbl
= &r600_buffer_vtbl
;
426 rbuffer
->TC_L2_dirty
= false;
427 util_range_init(&rbuffer
->valid_buffer_range
);
431 struct pipe_resource
*r600_buffer_create(struct pipe_screen
*screen
,
432 const struct pipe_resource
*templ
,
435 struct r600_common_screen
*rscreen
= (struct r600_common_screen
*)screen
;
436 struct r600_resource
*rbuffer
= r600_alloc_buffer_struct(screen
, templ
);
438 if (!r600_init_resource(rscreen
, rbuffer
, templ
->width0
, alignment
, TRUE
)) {
442 return &rbuffer
->b
.b
;
445 struct pipe_resource
*r600_aligned_buffer_create(struct pipe_screen
*screen
,
451 struct pipe_resource buffer
;
453 memset(&buffer
, 0, sizeof buffer
);
454 buffer
.target
= PIPE_BUFFER
;
455 buffer
.format
= PIPE_FORMAT_R8_UNORM
;
457 buffer
.usage
= usage
;
459 buffer
.width0
= size
;
462 buffer
.array_size
= 1;
463 return r600_buffer_create(screen
, &buffer
, alignment
);
466 struct pipe_resource
*
467 r600_buffer_from_user_memory(struct pipe_screen
*screen
,
468 const struct pipe_resource
*templ
,
471 struct r600_common_screen
*rscreen
= (struct r600_common_screen
*)screen
;
472 struct radeon_winsys
*ws
= rscreen
->ws
;
473 struct r600_resource
*rbuffer
= r600_alloc_buffer_struct(screen
, templ
);
475 rbuffer
->domains
= RADEON_DOMAIN_GTT
;
476 util_range_add(&rbuffer
->valid_buffer_range
, 0, templ
->width0
);
478 /* Convert a user pointer to a buffer. */
479 rbuffer
->buf
= ws
->buffer_from_ptr(ws
, user_memory
, templ
->width0
);
485 if (rscreen
->info
.r600_virtual_address
)
486 rbuffer
->gpu_address
=
487 ws
->buffer_get_virtual_address(rbuffer
->buf
);
489 rbuffer
->gpu_address
= 0;
491 return &rbuffer
->b
.b
;