summaryrefslogtreecommitdiff
path: root/src/gallium/winsys/radeon/drm/radeon_drm_buffer.c
blob: dc4b51747f4c9bef0f32a878d063a2d9615ec279 (plain)
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
#include "radeon_cs_gem.h"
#include "radeon_drm_buffer.h"

#include "util/u_hash_table.h"
#include "util/u_memory.h"
#include "util/u_simple_list.h"
#include "pipebuffer/pb_bufmgr.h"
#include "os/os_thread.h"

#include "state_tracker/drm_driver.h"

#include <radeon_drm.h>
#include <radeon_bo_gem.h>
#include <sys/ioctl.h>

struct radeon_drm_bufmgr;

struct radeon_drm_buffer {
    struct pb_buffer base;
    struct radeon_drm_bufmgr *mgr;

    struct radeon_bo *bo;

    boolean flinked;
    uint32_t flink;

    struct radeon_drm_buffer *next, *prev;
};

extern const struct pb_vtbl radeon_drm_buffer_vtbl;


static INLINE struct radeon_drm_buffer *
radeon_drm_buffer(struct pb_buffer *buf)
{
    assert(buf);
    assert(buf->vtbl == &radeon_drm_buffer_vtbl);
    return (struct radeon_drm_buffer *)buf;
}

struct radeon_drm_bufmgr {
    /* Base class. */
    struct pb_manager base;

    /* Winsys. */
    struct radeon_drm_winsys *rws;

    /* List of mapped buffers and its mutex. */
    struct radeon_drm_buffer buffer_map_list;
    pipe_mutex buffer_map_list_mutex;

    /* List of buffer handles and its mutex. */
    struct util_hash_table *buffer_handles;
    pipe_mutex buffer_handles_mutex;
};

static INLINE struct radeon_drm_bufmgr *
radeon_drm_bufmgr(struct pb_manager *mgr)
{
    assert(mgr);
    return (struct radeon_drm_bufmgr *)mgr;
}

static void
radeon_drm_buffer_destroy(struct pb_buffer *_buf)
{
    struct radeon_drm_buffer *buf = radeon_drm_buffer(_buf);
    int name;

    if (buf->bo->ptr != NULL) {
        pipe_mutex_lock(buf->mgr->buffer_map_list_mutex);
        /* Now test it again inside the mutex. */
        if (buf->bo->ptr != NULL) {
            remove_from_list(buf);
            radeon_bo_unmap(buf->bo);
            buf->bo->ptr = NULL;
        }
        pipe_mutex_unlock(buf->mgr->buffer_map_list_mutex);
    }
    name = radeon_gem_name_bo(buf->bo);
    if (name) {
        pipe_mutex_lock(buf->mgr->buffer_handles_mutex);
	util_hash_table_remove(buf->mgr->buffer_handles,
			       (void*)(uintptr_t)name);
        pipe_mutex_unlock(buf->mgr->buffer_handles_mutex);
    }
    radeon_bo_unref(buf->bo);

    FREE(buf);
}

static unsigned get_pb_usage_from_transfer_flags(enum pipe_transfer_usage usage)
{
    unsigned res = 0;

    if (usage & PIPE_TRANSFER_READ)
        res |= PB_USAGE_CPU_READ;

    if (usage & PIPE_TRANSFER_WRITE)
        res |= PB_USAGE_CPU_WRITE;

    if (usage & PIPE_TRANSFER_DONTBLOCK)
        res |= PB_USAGE_DONTBLOCK;

    if (usage & PIPE_TRANSFER_UNSYNCHRONIZED)
        res |= PB_USAGE_UNSYNCHRONIZED;

    return res;
}

static void *
radeon_drm_buffer_map_internal(struct pb_buffer *_buf,
			       unsigned flags, void *flush_ctx)
{
    struct radeon_drm_buffer *buf = radeon_drm_buffer(_buf);
    struct radeon_drm_cs *cs = flush_ctx;
    int write = 0;

    /* Note how we use radeon_bo_is_referenced_by_cs here. There are
     * basically two places this map function can be called from:
     * - pb_map
     * - create_buffer (in the buffer reuse case)
     *
     * Since pb managers are per-winsys managers, not per-context managers,
     * and we shouldn't reuse buffers if they are in-use in any context,
     * we simply ask: is this buffer referenced by *any* CS?
     *
     * The problem with buffer_create is that it comes from pipe_screen,
     * so we have no CS to look at, though luckily the following code
     * is sufficient to tell whether the buffer is in use. */
    if (flags & PB_USAGE_DONTBLOCK) {
        if (_buf->base.usage & RADEON_PB_USAGE_VERTEX)
            if (radeon_bo_is_referenced_by_cs(buf->bo, NULL))
		return NULL;
    }

    if (buf->bo->ptr != NULL) {
        pipe_mutex_lock(buf->mgr->buffer_map_list_mutex);
        /* Now test ptr again inside the mutex. We might have gotten a race
         * during the first test. */
        if (buf->bo->ptr != NULL) {
            remove_from_list(buf);
        }
        pipe_mutex_unlock(buf->mgr->buffer_map_list_mutex);
	return buf->bo->ptr;
    }

    if (flags & PB_USAGE_DONTBLOCK) {
        uint32_t domain;
        if (radeon_bo_is_busy(buf->bo, &domain))
            return NULL;
    }

    /* If we don't have any CS and the buffer is referenced,
     * we cannot flush. */
    assert(cs || !radeon_bo_is_referenced_by_cs(buf->bo, NULL));

    if (cs && radeon_bo_is_referenced_by_cs(buf->bo, cs->cs)) {
        cs->flush_cs(cs->flush_data);
    }

    if (flags & PB_USAGE_CPU_WRITE) {
        write = 1;
    }

    if (radeon_bo_map(buf->bo, write)) {
        return NULL;
    }

    pipe_mutex_lock(buf->mgr->buffer_map_list_mutex);
    remove_from_list(buf);
    pipe_mutex_unlock(buf->mgr->buffer_map_list_mutex);
    return buf->bo->ptr;
}

static void
radeon_drm_buffer_unmap_internal(struct pb_buffer *_buf)
{
    struct radeon_drm_buffer *buf = radeon_drm_buffer(_buf);
    pipe_mutex_lock(buf->mgr->buffer_map_list_mutex);
    if (is_empty_list(buf)) { /* = is not inserted... */
        insert_at_tail(&buf->mgr->buffer_map_list, buf);
    }
    pipe_mutex_unlock(buf->mgr->buffer_map_list_mutex);
}

static void
radeon_drm_buffer_get_base_buffer(struct pb_buffer *buf,
				  struct pb_buffer **base_buf,
				  unsigned *offset)
{
    *base_buf = buf;
    *offset = 0;
}


static enum pipe_error
radeon_drm_buffer_validate(struct pb_buffer *_buf,
			   struct pb_validate *vl,
			   unsigned flags)
{
   /* Always pinned */
   return PIPE_OK;
}

static void
radeon_drm_buffer_fence(struct pb_buffer *buf,
			struct pipe_fence_handle *fence)
{
}

const struct pb_vtbl radeon_drm_buffer_vtbl = {
    radeon_drm_buffer_destroy,
    radeon_drm_buffer_map_internal,
    radeon_drm_buffer_unmap_internal,
    radeon_drm_buffer_validate,
    radeon_drm_buffer_fence,
    radeon_drm_buffer_get_base_buffer,
};

static struct pb_buffer *
radeon_drm_bufmgr_create_buffer_from_handle_unsafe(struct pb_manager *_mgr,
                                                   uint32_t handle)
{
    struct radeon_drm_bufmgr *mgr = radeon_drm_bufmgr(_mgr);
    struct radeon_drm_winsys *rws = mgr->rws;
    struct radeon_drm_buffer *buf;
    struct radeon_bo *bo;

    buf = util_hash_table_get(mgr->buffer_handles, (void*)(uintptr_t)handle);

    if (buf) {
        struct pb_buffer *b = NULL;
        pb_reference(&b, &buf->base);
        return b;
    }

    bo = radeon_bo_open(rws->bom, handle, 0,
			0, 0, 0);
    if (bo == NULL)
	return NULL;

    buf = CALLOC_STRUCT(radeon_drm_buffer);
    if (!buf) {
	radeon_bo_unref(bo);
	return NULL;
    }

    make_empty_list(buf);

    pipe_reference_init(&buf->base.base.reference, 1);
    buf->base.base.alignment = 0;
    buf->base.base.usage = PB_USAGE_GPU_WRITE | PB_USAGE_GPU_READ;
    buf->base.base.size = bo->size;
    buf->base.vtbl = &radeon_drm_buffer_vtbl;
    buf->mgr = mgr;

    buf->bo = bo;

    util_hash_table_set(mgr->buffer_handles, (void*)(uintptr_t)handle, buf);

    return &buf->base;
}

struct pb_buffer *
radeon_drm_bufmgr_create_buffer_from_handle(struct pb_manager *_mgr,
                                            uint32_t handle)
{
    struct radeon_drm_bufmgr *mgr = radeon_drm_bufmgr(_mgr);
    struct pb_buffer *pb;

    pipe_mutex_lock(mgr->buffer_handles_mutex);
    pb = radeon_drm_bufmgr_create_buffer_from_handle_unsafe(_mgr, handle);
    pipe_mutex_unlock(mgr->buffer_handles_mutex);

    return pb;
}

static struct pb_buffer *
radeon_drm_bufmgr_create_buffer(struct pb_manager *_mgr,
				pb_size size,
				const struct pb_desc *desc)
{
    struct radeon_drm_bufmgr *mgr = radeon_drm_bufmgr(_mgr);
    struct radeon_drm_winsys *rws = mgr->rws;
    struct radeon_drm_buffer *buf;
    uint32_t domain;

    buf = CALLOC_STRUCT(radeon_drm_buffer);
    if (!buf)
	goto error1;

    pipe_reference_init(&buf->base.base.reference, 1);
    buf->base.base.alignment = desc->alignment;
    buf->base.base.usage = desc->usage;
    buf->base.base.size = size;
    buf->base.vtbl = &radeon_drm_buffer_vtbl;
    buf->mgr = mgr;

    make_empty_list(buf);

    domain =
        (desc->usage & RADEON_PB_USAGE_DOMAIN_GTT  ? RADEON_GEM_DOMAIN_GTT  : 0) |
        (desc->usage & RADEON_PB_USAGE_DOMAIN_VRAM ? RADEON_GEM_DOMAIN_VRAM : 0);

    buf->bo = radeon_bo_open(rws->bom, 0, size,
			     desc->alignment, domain, 0);
    if (buf->bo == NULL)
	goto error2;

    return &buf->base;

 error2:
    FREE(buf);
 error1:
    return NULL; 
}

static void
radeon_drm_bufmgr_flush(struct pb_manager *mgr)
{
    /* NOP */
}

static void
radeon_drm_bufmgr_destroy(struct pb_manager *_mgr)
{
    struct radeon_drm_bufmgr *mgr = radeon_drm_bufmgr(_mgr);
    util_hash_table_destroy(mgr->buffer_handles);
    pipe_mutex_destroy(mgr->buffer_map_list_mutex);
    pipe_mutex_destroy(mgr->buffer_handles_mutex);
    FREE(mgr);
}

static unsigned handle_hash(void *key)
{
    return (unsigned)key;
}

static int handle_compare(void *key1, void *key2)
{
    return !((int)key1 == (int)key2);
}

struct pb_manager *
radeon_drm_bufmgr_create(struct radeon_drm_winsys *rws)
{
    struct radeon_drm_bufmgr *mgr;

    mgr = CALLOC_STRUCT(radeon_drm_bufmgr);
    if (!mgr)
	return NULL;

    mgr->base.destroy = radeon_drm_bufmgr_destroy;
    mgr->base.create_buffer = radeon_drm_bufmgr_create_buffer;
    mgr->base.flush = radeon_drm_bufmgr_flush;

    mgr->rws = rws;
    make_empty_list(&mgr->buffer_map_list);
    mgr->buffer_handles = util_hash_table_create(handle_hash, handle_compare);
    pipe_mutex_init(mgr->buffer_map_list_mutex);
    pipe_mutex_init(mgr->buffer_handles_mutex);
    return &mgr->base;
}

static struct radeon_drm_buffer *get_drm_buffer(struct pb_buffer *_buf)
{
    struct radeon_drm_buffer *buf = NULL;

    if (_buf->vtbl == &radeon_drm_buffer_vtbl) {
        buf = radeon_drm_buffer(_buf);
    } else {
	struct pb_buffer *base_buf;
	pb_size offset;
	pb_get_base_buffer(_buf, &base_buf, &offset);

        if (base_buf->vtbl == &radeon_drm_buffer_vtbl)
            buf = radeon_drm_buffer(base_buf);
    }

    return buf;
}

static void *radeon_drm_buffer_map(struct r300_winsys_screen *ws,
                                   struct r300_winsys_buffer *buf,
                                   struct r300_winsys_cs *cs,
                                   enum pipe_transfer_usage usage)
{
    struct pb_buffer *_buf = radeon_pb_buffer(buf);

    return pb_map(_buf, get_pb_usage_from_transfer_flags(usage), radeon_drm_cs(cs));
}

static void radeon_drm_buffer_unmap(struct r300_winsys_screen *ws,
                                    struct r300_winsys_buffer *buf)
{
    struct pb_buffer *_buf = radeon_pb_buffer(buf);

    pb_unmap(_buf);
}

boolean radeon_drm_bufmgr_get_handle(struct pb_buffer *_buf,
				     struct winsys_handle *whandle)
{
    struct drm_gem_flink flink;
    struct radeon_drm_buffer *buf = get_drm_buffer(_buf);

    if (whandle->type == DRM_API_HANDLE_TYPE_SHARED) {
	if (!buf->flinked) {
	    flink.handle = buf->bo->handle;

            if (ioctl(buf->mgr->rws->fd, DRM_IOCTL_GEM_FLINK, &flink)) {
		return FALSE;
	    }

	    buf->flinked = TRUE;
	    buf->flink = flink.name;
	}
	whandle->handle = buf->flink;
    } else if (whandle->type == DRM_API_HANDLE_TYPE_KMS) {
	whandle->handle = buf->bo->handle;
    }
    return TRUE;
}

static void radeon_drm_buffer_get_tiling(struct r300_winsys_screen *ws,
                                         struct r300_winsys_buffer *_buf,
                                         enum r300_buffer_tiling *microtiled,
                                         enum r300_buffer_tiling *macrotiled)
{
    struct radeon_drm_buffer *buf = get_drm_buffer(radeon_pb_buffer(_buf));
    uint32_t flags = 0, pitch;

    radeon_bo_get_tiling(buf->bo, &flags, &pitch);

    *microtiled = R300_BUFFER_LINEAR;
    *macrotiled = R300_BUFFER_LINEAR;
    if (flags & RADEON_BO_FLAGS_MICRO_TILE)
	*microtiled = R300_BUFFER_TILED;

    if (flags & RADEON_BO_FLAGS_MACRO_TILE)
	*macrotiled = R300_BUFFER_TILED;
}

static void radeon_drm_buffer_set_tiling(struct r300_winsys_screen *ws,
                                         struct r300_winsys_buffer *_buf,
                                         enum r300_buffer_tiling microtiled,
                                         enum r300_buffer_tiling macrotiled,
                                         uint32_t pitch)
{
    struct radeon_drm_buffer *buf = get_drm_buffer(radeon_pb_buffer(_buf));
    uint32_t flags = 0;
    if (microtiled == R300_BUFFER_TILED)
        flags |= RADEON_BO_FLAGS_MICRO_TILE;
/* XXX Remove this ifdef when libdrm version 2.4.19 becomes mandatory. */
#ifdef RADEON_BO_FLAGS_MICRO_TILE_SQUARE
    else if (microtiled == R300_BUFFER_SQUARETILED)
        flags |= RADEON_BO_FLAGS_MICRO_TILE_SQUARE;
#endif
    if (macrotiled == R300_BUFFER_TILED)
        flags |= RADEON_BO_FLAGS_MACRO_TILE;

    radeon_bo_set_tiling(buf->bo, flags, pitch);
}

static void radeon_drm_bufmgr_add_buffer(struct r300_winsys_cs *rcs,
                                         struct r300_winsys_cs_buffer *_buf,
                                         enum r300_buffer_domain rd,
                                         enum r300_buffer_domain wd)
{
    struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
    struct radeon_bo *bo = (struct radeon_bo*)_buf;

    radeon_cs_space_add_persistent_bo(cs->cs, bo, rd, wd);
}

static void radeon_drm_bufmgr_write_reloc(struct r300_winsys_cs *rcs,
                                          struct r300_winsys_cs_buffer *_buf,
                                          enum r300_buffer_domain rd,
                                          enum r300_buffer_domain wd)
{
    struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
    struct radeon_bo *bo = (struct radeon_bo*)_buf;
    int retval;

    cs->cs->cdw = cs->base.cdw;
    retval = radeon_cs_write_reloc(cs->cs, bo, rd, wd, 0);
    cs->base.cdw = cs->cs->cdw;
    if (retval) {
        fprintf(stderr, "radeon: Relocation of %p (%d, %d, %d) failed!\n",
                bo, rd, wd, 0);
    }
}

static struct r300_winsys_cs_buffer *radeon_drm_get_cs_handle(
        struct r300_winsys_screen *rws,
        struct r300_winsys_buffer *_buf)
{
    /* return pure radeon_bo. */
    return (struct r300_winsys_cs_buffer*)
            get_drm_buffer(radeon_pb_buffer(_buf))->bo;
}

static boolean radeon_drm_is_buffer_referenced(struct r300_winsys_cs *rcs,
                                               struct r300_winsys_cs_buffer *_buf,
                                               enum r300_reference_domain domain)
{
    struct radeon_drm_cs *cs = radeon_drm_cs(rcs);
    struct radeon_bo *bo = (struct radeon_bo*)_buf;
    uint32_t tmp;

    if (domain & R300_REF_CS) {
        if (radeon_bo_is_referenced_by_cs(bo, cs->cs)) {
            return TRUE;
        }
    }

    if (domain & R300_REF_HW) {
        if (radeon_bo_is_busy(bo, &tmp)) {
            return TRUE;
        }
    }

    return FALSE;
}

void radeon_drm_bufmgr_flush_maps(struct pb_manager *_mgr)
{
    struct radeon_drm_bufmgr *mgr = radeon_drm_bufmgr(_mgr);
    struct radeon_drm_buffer *rpb, *t_rpb;

    pipe_mutex_lock(mgr->buffer_map_list_mutex);

    foreach_s(rpb, t_rpb, &mgr->buffer_map_list) {
	radeon_bo_unmap(rpb->bo);
	rpb->bo->ptr = NULL;
	remove_from_list(rpb);
    }

    make_empty_list(&mgr->buffer_map_list);

    pipe_mutex_unlock(mgr->buffer_map_list_mutex);
}

static void radeon_drm_buffer_wait(struct r300_winsys_screen *ws,
                                   struct r300_winsys_buffer *_buf)
{
    struct radeon_drm_buffer *buf = get_drm_buffer(radeon_pb_buffer(_buf));

    radeon_bo_wait(buf->bo);
}

void radeon_drm_bufmgr_init_functions(struct radeon_drm_winsys *ws)
{
    ws->base.buffer_get_cs_handle = radeon_drm_get_cs_handle;
    ws->base.buffer_set_tiling = radeon_drm_buffer_set_tiling;
    ws->base.buffer_get_tiling = radeon_drm_buffer_get_tiling;
    ws->base.buffer_map = radeon_drm_buffer_map;
    ws->base.buffer_unmap = radeon_drm_buffer_unmap;
    ws->base.buffer_wait = radeon_drm_buffer_wait;
    ws->base.cs_is_buffer_referenced = radeon_drm_is_buffer_referenced;
    ws->base.cs_add_buffer = radeon_drm_bufmgr_add_buffer;
    ws->base.cs_write_reloc = radeon_drm_bufmgr_write_reloc;
}