1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
|
/**************************************************************************
*
* Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
/* Originally a fake version of the buffer manager so that we can
* prototype the changes in a driver fairly quickly, has been fleshed
* out to a fully functional interim solution.
*
* Basically wraps the old style memory management in the new
* programming interface, but is more expressive and avoids many of
* the bugs in the old texture manager.
*/
#include "mtypes.h"
#include "dri_bufmgr.h"
#include "drm.h"
#include "simple_list.h"
#include "mm.h"
#include "imports.h"
#define DBG(...)
/* Internal flags:
*/
#define BM_NO_BACKING_STORE DRM_BO_FLAG_MEM_PRIV0
#define BM_NO_FENCE_SUBDATA DRM_BO_FLAG_MEM_PRIV1
/* Wrapper around mm.c's mem_block, which understands that you must
* wait for fences to expire before memory can be freed. This is
* specific to our use of memcpy for uploads - an upload that was
* processed through the command queue wouldn't need to care about
* fences.
*/
struct block {
struct block *next, *prev;
struct mem_block *mem; /* BM_MEM_AGP */
unsigned referenced:1;
unsigned on_hardware:1;
unsigned fenced:1;
unsigned fence; /* BM_MEM_AGP, Split to read_fence, write_fence */
dri_bo *bo;
void *virtual;
};
typedef struct _bufmgr_fake {
dri_bufmgr bufmgr;
_glthread_Mutex mutex; /**< for thread safety */
unsigned long low_offset;
unsigned long size;
void *virtual;
struct mem_block *heap;
struct block lru; /* only allocated, non-fence-pending blocks here */
unsigned buf_nr; /* for generating ids */
struct block referenced; /* after bmBufferOffset */
struct block on_hardware; /* after bmValidateBuffers */
struct block fenced; /* after bmFenceBuffers (mi_flush, emit irq, write dword) */
/* then to bufmgr->lru or free() */
unsigned int last_fence;
unsigned fail:1;
unsigned need_fence:1;
GLboolean thrashing;
/**
* Driver callback to emit a fence, returning the cookie.
*
* Currently, this also requires that a write flush be emitted before
* emitting the fence, but this should change.
*/
unsigned int (*fence_emit)(void *private);
/** Driver callback to wait for a fence cookie to have passed. */
int (*fence_wait)(void *private, unsigned int fence_cookie);
/** Driver-supplied argument to driver callbacks */
void *driver_priv;
} dri_bufmgr_fake;
typedef struct _dri_bo_fake {
dri_bo bo;
unsigned id; /* debug only */
const char *name;
unsigned dirty:1;
unsigned int refcount;
/* Flags may consist of any of the DRM_BO flags, plus
* DRM_BO_NO_BACKING_STORE and BM_NO_FENCE_SUBDATA, which are the first two
* driver private flags.
*/
unsigned int flags;
unsigned int alignment;
GLboolean is_static;
struct block *block;
void *backing_store;
void (*invalidate_cb)(dri_bufmgr *bufmgr, void * );
void *invalidate_ptr;
} dri_bo_fake;
typedef struct _dri_fence_fake {
dri_fence fence;
const char *name;
unsigned int refcount;
unsigned int fence_cookie;
GLboolean flushed;
} dri_fence_fake;
static int clear_fenced(dri_bufmgr_fake *bufmgr_fake,
unsigned int fence_cookie);
#define MAXFENCE 0x7fffffff
static GLboolean FENCE_LTE( unsigned a, unsigned b )
{
if (a == b)
return GL_TRUE;
if (a < b && b - a < (1<<24))
return GL_TRUE;
if (a > b && MAXFENCE - a + b < (1<<24))
return GL_TRUE;
return GL_FALSE;
}
static unsigned int
_fence_emit_internal(dri_bufmgr_fake *bufmgr_fake)
{
bufmgr_fake->last_fence = bufmgr_fake->fence_emit(bufmgr_fake->driver_priv);
return bufmgr_fake->last_fence;
}
static void
_fence_wait_internal(dri_bufmgr_fake *bufmgr_fake, unsigned int cookie)
{
int ret;
ret = bufmgr_fake->fence_wait(bufmgr_fake->driver_priv, cookie);
if (ret != 0) {
_mesa_printf("%s:%d: Error %d waiting for fence.\n",
__FILE__, __LINE__);
abort();
}
clear_fenced(bufmgr_fake, cookie);
}
static GLboolean
_fence_test(dri_bufmgr_fake *bufmgr_fake, unsigned fence)
{
/* Slight problem with wrap-around:
*/
return fence == 0 || FENCE_LTE(fence, bufmgr_fake->last_fence);
}
/**
* Allocate a memory manager block for the buffer.
*/
static GLboolean
alloc_block(dri_bo *bo)
{
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
dri_bufmgr_fake *bufmgr_fake= (dri_bufmgr_fake *)bo->bufmgr;
struct block *block = (struct block *)calloc(sizeof *block, 1);
unsigned int align_log2 = ffs(bo_fake->alignment);
GLuint sz;
if (!block)
return GL_FALSE;
sz = (bo->size + bo_fake->alignment - 1) & ~(bo_fake->alignment - 1);
block->mem = mmAllocMem(bufmgr_fake->heap, sz, align_log2, 0);
if (!block->mem) {
free(block);
return GL_FALSE;
}
make_empty_list(block);
/* Insert at head or at tail???
*/
insert_at_tail(&bufmgr_fake->lru, block);
block->virtual = bufmgr_fake->virtual +
block->mem->ofs - bufmgr_fake->low_offset;
block->bo = bo;
bo_fake->block = block;
return GL_TRUE;
}
/* Release the card storage associated with buf:
*/
static void free_block(dri_bufmgr_fake *bufmgr_fake, struct block *block)
{
DBG("free block %p\n", block);
if (!block)
return;
if (block->referenced) {
_mesa_printf("tried to free block on referenced list\n");
assert(0);
}
else if (block->on_hardware) {
block->bo = NULL;
}
else if (block->fenced) {
block->bo = NULL;
}
else {
DBG(" - free immediately\n");
remove_from_list(block);
mmFreeMem(block->mem);
free(block);
}
}
static void
alloc_backing_store(dri_bo *bo)
{
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
assert(!bo_fake->backing_store);
assert(!(bo_fake->flags & (DRM_BO_FLAG_NO_EVICT|BM_NO_BACKING_STORE)));
bo_fake->backing_store = ALIGN_MALLOC(bo->size, 64);
}
static void
free_backing_store(dri_bo *bo)
{
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
assert(!(bo_fake->flags & (DRM_BO_FLAG_NO_EVICT|BM_NO_BACKING_STORE)));
if (bo_fake->backing_store) {
ALIGN_FREE(bo_fake->backing_store);
bo_fake->backing_store = NULL;
}
}
static void
set_dirty(dri_bo *bo)
{
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
if (bo_fake->flags & BM_NO_BACKING_STORE)
bo_fake->invalidate_cb(&bufmgr_fake->bufmgr, bo_fake->invalidate_ptr);
assert(!(bo_fake->flags & DRM_BO_FLAG_NO_EVICT));
DBG("set_dirty - buf %d\n", bo_fake->id);
bo_fake->dirty = 1;
}
static GLboolean
evict_lru(dri_bufmgr_fake *bufmgr_fake, GLuint max_fence)
{
struct block *block, *tmp;
DBG("%s\n", __FUNCTION__);
foreach_s(block, tmp, &bufmgr_fake->lru) {
dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo;
if (bo_fake != NULL && (bo_fake->flags & BM_NO_FENCE_SUBDATA))
continue;
if (block->fence && max_fence && !FENCE_LTE(block->fence, max_fence))
return 0;
set_dirty(&bo_fake->bo);
bo_fake->block = NULL;
free_block(bufmgr_fake, block);
return GL_TRUE;
}
return GL_FALSE;
}
#define foreach_s_rev(ptr, t, list) \
for(ptr=(list)->prev,t=(ptr)->prev; list != ptr; ptr=t, t=(t)->prev)
static GLboolean
evict_mru(dri_bufmgr_fake *bufmgr_fake)
{
struct block *block, *tmp;
DBG("%s\n", __FUNCTION__);
foreach_s_rev(block, tmp, &bufmgr_fake->lru) {
dri_bo_fake *bo_fake = (dri_bo_fake *)block->bo;
if (bo_fake && (bo_fake->flags & BM_NO_FENCE_SUBDATA))
continue;
set_dirty(&bo_fake->bo);
bo_fake->block = NULL;
free_block(bufmgr_fake, block);
return GL_TRUE;
}
return GL_FALSE;
}
/**
* Removes all objects from the fenced list older than the given fence.
*/
static int clear_fenced(dri_bufmgr_fake *bufmgr_fake,
unsigned int fence_cookie)
{
struct block *block, *tmp;
int ret = 0;
foreach_s(block, tmp, &bufmgr_fake->fenced) {
assert(block->fenced);
if (_fence_test(bufmgr_fake, block->fence)) {
block->fenced = 0;
if (!block->bo) {
DBG("delayed free: offset %x sz %x\n",
block->mem->ofs, block->mem->size);
remove_from_list(block);
mmFreeMem(block->mem);
free(block);
}
else {
DBG("return to lru: offset %x sz %x\n",
block->mem->ofs, block->mem->size);
move_to_tail(&bufmgr_fake->lru, block);
}
ret = 1;
}
else {
/* Blocks are ordered by fence, so if one fails, all from
* here will fail also:
*/
break;
}
}
/* Also check the referenced list:
*/
foreach_s(block, tmp, &bufmgr_fake->referenced ) {
if (block->fenced && _fence_test(bufmgr_fake, block->fence)) {
block->fenced = 0;
}
}
DBG("%s: %d\n", __FUNCTION__, ret);
return ret;
}
static void fence_blocks(dri_bufmgr_fake *bufmgr_fake, unsigned fence)
{
struct block *block, *tmp;
foreach_s (block, tmp, &bufmgr_fake->on_hardware) {
DBG("Fence block %p (sz 0x%x buf %p) with fence %d\n", block,
block->mem->size, block->bo, fence);
block->fence = fence;
block->on_hardware = 0;
block->fenced = 1;
/* Move to tail of pending list here
*/
move_to_tail(&bufmgr_fake->fenced, block);
}
/* Also check the referenced list:
*/
foreach_s (block, tmp, &bufmgr_fake->referenced) {
if (block->on_hardware) {
DBG("Fence block %p (sz 0x%x buf %p) with fence %d\n", block,
block->mem->size, block->bo, fence);
block->fence = fence;
block->on_hardware = 0;
block->fenced = 1;
}
}
assert(is_empty_list(&bufmgr_fake->on_hardware));
}
static GLboolean evict_and_alloc_block(dri_bo *bo)
{
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
assert(bo_fake->block == NULL);
/* Search for already free memory:
*/
if (alloc_block(bo))
return GL_TRUE;
/* If we're not thrashing, allow lru eviction to dig deeper into
* recently used textures. We'll probably be thrashing soon:
*/
if (!bufmgr_fake->thrashing) {
while (evict_lru(bufmgr_fake, 0))
if (alloc_block(bo))
return GL_TRUE;
}
/* Keep thrashing counter alive?
*/
if (bufmgr_fake->thrashing)
bufmgr_fake->thrashing = 20;
/* Wait on any already pending fences - here we are waiting for any
* freed memory that has been submitted to hardware and fenced to
* become available:
*/
while (!is_empty_list(&bufmgr_fake->fenced)) {
GLuint fence = bufmgr_fake->fenced.next->fence;
_fence_wait_internal(bufmgr_fake, fence);
if (alloc_block(bo))
return GL_TRUE;
}
if (!is_empty_list(&bufmgr_fake->on_hardware)) {
while (!is_empty_list(&bufmgr_fake->fenced)) {
GLuint fence = bufmgr_fake->fenced.next->fence;
_fence_wait_internal(bufmgr_fake, fence);
}
if (!bufmgr_fake->thrashing) {
DBG("thrashing\n");
}
bufmgr_fake->thrashing = 20;
if (alloc_block(bo))
return GL_TRUE;
}
while (evict_mru(bufmgr_fake))
if (alloc_block(bo))
return GL_TRUE;
DBG("%s 0x%x bytes failed\n", __FUNCTION__, bo->size);
assert(is_empty_list(&bufmgr_fake->on_hardware));
assert(is_empty_list(&bufmgr_fake->fenced));
return GL_FALSE;
}
/***********************************************************************
* Public functions
*/
/**
* Wait for hardware idle by emitting a fence and waiting for it.
*/
static void
dri_bufmgr_fake_wait_idle(dri_bufmgr_fake *bufmgr_fake)
{
unsigned int cookie;
cookie = bufmgr_fake->fence_emit(bufmgr_fake->driver_priv);
_fence_wait_internal(bufmgr_fake, cookie);
}
/* Specifically ignore texture memory sharing.
* -- just evict everything
* -- and wait for idle
*/
void
dri_bufmgr_fake_contended_lock_take(dri_bufmgr *bufmgr)
{
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
{
struct block *block, *tmp;
assert(is_empty_list(&bufmgr_fake->referenced));
bufmgr_fake->need_fence = 1;
bufmgr_fake->fail = 0;
/* Wait for hardware idle. We don't know where acceleration has been
* happening, so we'll need to wait anyway before letting anything get
* put on the card again.
*/
dri_bufmgr_fake_wait_idle(bufmgr_fake);
assert(is_empty_list(&bufmgr_fake->fenced));
assert(is_empty_list(&bufmgr_fake->on_hardware));
foreach_s(block, tmp, &bufmgr_fake->lru) {
assert(_fence_test(bufmgr_fake, block->fence));
set_dirty(block->bo);
}
}
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
}
static dri_bo *
dri_fake_bo_alloc(dri_bufmgr *bufmgr, const char *name,
unsigned long size, unsigned int alignment,
unsigned int location_mask)
{
dri_bufmgr_fake *bufmgr_fake;
dri_bo_fake *bo_fake;
bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
bo_fake = calloc(1, sizeof(*bo_fake));
if (!bo_fake)
return NULL;
bo_fake->bo.size = size;
bo_fake->bo.offset = -1;
bo_fake->bo.virtual = NULL;
bo_fake->bo.bufmgr = bufmgr;
bo_fake->refcount = 1;
/* Alignment must be a power of two */
assert((alignment & (alignment - 1)) == 0);
if (alignment == 0)
alignment = 1;
bo_fake->alignment = alignment;
bo_fake->id = ++bufmgr_fake->buf_nr;
bo_fake->name = name;
bo_fake->flags = 0;
bo_fake->is_static = GL_FALSE;
return &bo_fake->bo;
}
static dri_bo *
dri_fake_bo_alloc_static(dri_bufmgr *bufmgr, const char *name,
unsigned long offset, unsigned long size,
void *virtual, unsigned int location_mask)
{
dri_bufmgr_fake *bufmgr_fake;
dri_bo_fake *bo_fake;
bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
bo_fake = calloc(1, sizeof(*bo_fake));
if (!bo_fake)
return NULL;
bo_fake->bo.size = size;
bo_fake->bo.offset = offset;
bo_fake->bo.virtual = virtual;
bo_fake->bo.bufmgr = bufmgr;
bo_fake->refcount = 1;
bo_fake->name = name;
bo_fake->flags = DRM_BO_FLAG_NO_EVICT | DRM_BO_FLAG_NO_MOVE;
bo_fake->is_static = GL_TRUE;
return &bo_fake->bo;
}
static void
dri_fake_bo_reference(dri_bo *bo)
{
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
bo_fake->refcount++;
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
}
static void
dri_fake_bo_unreference(dri_bo *bo)
{
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
if (!bo)
return;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
if (--bo_fake->refcount == 0) {
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
/* No remaining references, so free it */
if (bo_fake->block)
free_block(bufmgr_fake, bo_fake->block);
free_backing_store(bo);
free(bo);
return;
}
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
}
/**
* Map a buffer into bo->virtual, allocating either card memory space (If
* BM_NO_BACKING_STORE or DRM_BO_FLAG_NO_EVICT) or backing store, as necessary.
*/
static int
dri_fake_bo_map(dri_bo *bo, GLboolean write_enable)
{
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
/* Static buffers are always mapped. */
if (bo_fake->is_static)
return 0;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
{
DBG("bmMapBuffer %d\n", bo_fake->id);
if (bo->virtual != NULL) {
_mesa_printf("%s: already mapped\n", __FUNCTION__);
abort();
}
else if (bo_fake->flags & (BM_NO_BACKING_STORE|DRM_BO_FLAG_NO_EVICT)) {
if (!bo_fake->block && !evict_and_alloc_block(bo)) {
DBG("%s: alloc failed\n", __FUNCTION__);
bufmgr_fake->fail = 1;
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
return 1;
}
else {
assert(bo_fake->block);
bo_fake->dirty = 0;
if (!(bo_fake->flags & BM_NO_FENCE_SUBDATA))
dri_bufmgr_fake_wait_idle(bufmgr_fake);
bo->virtual = bo_fake->block->virtual;
}
}
else {
if (write_enable)
set_dirty(bo);
if (bo_fake->backing_store == 0)
alloc_backing_store(bo);
bo->virtual = bo_fake->backing_store;
}
}
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
return 0;
}
static int
dri_fake_bo_unmap(dri_bo *bo)
{
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
/* Static buffers are always mapped. */
if (bo_fake->is_static)
return 0;
if (bo == NULL)
return 0;
bo->virtual = NULL;
return 0;
}
static int
dri_fake_bo_validate(dri_bo *bo, unsigned int flags)
{
dri_bufmgr_fake *bufmgr_fake;
dri_bo_fake *bo_fake = (dri_bo_fake *)bo;
/* XXX: Sanity-check whether we've already validated this one under
* different flags. See drmAddValidateItem().
*/
bufmgr_fake = (dri_bufmgr_fake *)bo->bufmgr;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
{
/* Allocate the card memory */
if (!bo_fake->block && !evict_and_alloc_block(bo)) {
bufmgr_fake->fail = 1;
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
return -1;
}
assert(bo_fake->block);
assert(bo_fake->block->bo == &bo_fake->bo);
DBG("Add buf %d (block %p, dirty %d) to referenced list\n",
bo_fake->id, bo_fake->block, bo_fake->dirty);
move_to_tail(&bufmgr_fake->referenced, bo_fake->block);
bo_fake->block->referenced = 1;
bo->offset = bo_fake->block->mem->ofs;
/* Upload the buffer contents if necessary */
if (bo_fake->dirty) {
DBG("Upload dirty buf %d (%s) sz %d offset 0x%x\n", bo_fake->id,
bo_fake->name, bo->size, block->mem->ofs);
assert(!(bo_fake->flags &
(BM_NO_BACKING_STORE|DRM_BO_FLAG_NO_EVICT)));
/* Actually, should be able to just wait for a fence on the memory,
* which we would be tracking when we free it. Waiting for idle is
* a sufficiently large hammer for now.
*/
dri_bufmgr_fake_wait_idle(bufmgr_fake);
memcpy(bo_fake->block->virtual, bo_fake->backing_store, bo->size);
bo_fake->block->referenced = 0;
bo_fake->block->on_hardware = 1;
move_to_tail(&bufmgr_fake->on_hardware, bo_fake->block);
}
bufmgr_fake->need_fence = 1;
}
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
return 0;
}
static dri_fence *
dri_fake_fence_validated(dri_bufmgr *bufmgr, const char *name,
GLboolean flushed)
{
dri_fence_fake *fence_fake;
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)bufmgr;
unsigned int cookie;
fence_fake = malloc(sizeof(*fence_fake));
if (!fence_fake)
return NULL;
fence_fake->refcount = 1;
fence_fake->name = name;
fence_fake->flushed = flushed;
fence_fake->fence.bufmgr = bufmgr;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
cookie = _fence_emit_internal(bufmgr_fake);
fence_fake->fence_cookie = cookie;
fence_blocks(bufmgr_fake, cookie);
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
return &fence_fake->fence;
}
static void
dri_fake_fence_reference(dri_fence *fence)
{
dri_fence_fake *fence_fake = (dri_fence_fake *)fence;
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)fence->bufmgr;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
++fence_fake->refcount;
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
}
static void
dri_fake_fence_unreference(dri_fence *fence)
{
dri_fence_fake *fence_fake = (dri_fence_fake *)fence;
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)fence->bufmgr;
if (!fence)
return;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
if (--fence_fake->refcount == 0) {
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
free(fence);
return;
}
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
}
static void
dri_fake_fence_wait(dri_fence *fence)
{
dri_fence_fake *fence_fake = (dri_fence_fake *)fence;
dri_bufmgr_fake *bufmgr_fake = (dri_bufmgr_fake *)fence->bufmgr;
_glthread_LOCK_MUTEX(bufmgr_fake->mutex);
_fence_wait_internal(bufmgr_fake, fence_fake->fence_cookie);
_glthread_UNLOCK_MUTEX(bufmgr_fake->mutex);
}
dri_bufmgr *
dri_bufmgr_fake_init(unsigned long low_offset, void *low_virtual,
unsigned long size,
unsigned int (*fence_emit)(void *private),
int (*fence_wait)(void *private, unsigned int cookie),
void *driver_priv)
{
dri_bufmgr_fake *bufmgr_fake;
bufmgr_fake = calloc(1, sizeof(*bufmgr_fake));
/* Initialize allocator */
make_empty_list(&bufmgr_fake->referenced);
make_empty_list(&bufmgr_fake->fenced);
make_empty_list(&bufmgr_fake->on_hardware);
make_empty_list(&bufmgr_fake->lru);
bufmgr_fake->low_offset = low_offset;
bufmgr_fake->virtual = low_virtual;
bufmgr_fake->size = size;
bufmgr_fake->heap = mmInit(low_offset, size);
_glthread_INIT_MUTEX(bufmgr_fake->mutex);
/* Hook in methods */
bufmgr_fake->bufmgr.bo_alloc = dri_fake_bo_alloc;
bufmgr_fake->bufmgr.bo_alloc_static = dri_fake_bo_alloc_static;
bufmgr_fake->bufmgr.bo_reference = dri_fake_bo_reference;
bufmgr_fake->bufmgr.bo_unreference = dri_fake_bo_unreference;
bufmgr_fake->bufmgr.bo_map = dri_fake_bo_map;
bufmgr_fake->bufmgr.bo_unmap = dri_fake_bo_unmap;
bufmgr_fake->bufmgr.bo_validate = dri_fake_bo_validate;
bufmgr_fake->bufmgr.fence_validated = dri_fake_fence_validated;
bufmgr_fake->bufmgr.fence_wait = dri_fake_fence_wait;
bufmgr_fake->bufmgr.fence_reference = dri_fake_fence_reference;
bufmgr_fake->bufmgr.fence_unreference = dri_fake_fence_unreference;
bufmgr_fake->fence_emit = fence_emit;
bufmgr_fake->fence_wait = fence_wait;
bufmgr_fake->driver_priv = driver_priv;
return &bufmgr_fake->bufmgr;
}
|