1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
2
3 /*
4 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the next
14 * paragraph) shall be included in all copies or substantial portions of the
15 * Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
23 * SOFTWARE.
24 *
25 * Authors:
26 * Rob Clark <robclark@freedesktop.org>
27 */
28
29 #include <assert.h>
30 #include <inttypes.h>
31
32 #include "freedreno_ringbuffer.h"
33 #include "msm_priv.h"
34
35 /* represents a single cmd buffer in the submit ioctl. Each cmd buffer has
36 * a backing bo, and a reloc table.
37 */
38 struct msm_cmd {
39 struct list_head list;
40
41 struct fd_ringbuffer *ring;
42 struct fd_bo *ring_bo;
43
44 /* reloc's table: */
45 struct drm_msm_gem_submit_reloc *relocs;
46 uint32_t nr_relocs, max_relocs;
47
48 uint32_t size;
49 };
50
51 struct msm_ringbuffer {
52 struct fd_ringbuffer base;
53
54 /* submit ioctl related tables:
55 * Note that bos and cmds are tracked by the parent ringbuffer, since
56 * that is global to the submit ioctl call. The reloc's table is tracked
57 * per cmd-buffer.
58 */
59 struct {
60 /* bo's table: */
61 struct drm_msm_gem_submit_bo *bos;
62 uint32_t nr_bos, max_bos;
63
64 /* cmd's table: */
65 struct drm_msm_gem_submit_cmd *cmds;
66 uint32_t nr_cmds, max_cmds;
67 } submit;
68
69 /* should have matching entries in submit.bos: */
70 /* Note, only in parent ringbuffer */
71 struct fd_bo **bos;
72 uint32_t nr_bos, max_bos;
73
74 /* should have matching entries in submit.cmds: */
75 struct msm_cmd **cmds;
76 uint32_t nr_cmds, max_cmds;
77
78 /* List of physical cmdstream buffers (msm_cmd) assocated with this
79 * logical fd_ringbuffer.
80 *
81 * Note that this is different from msm_ringbuffer::cmds (which
82 * shadows msm_ringbuffer::submit::cmds for tracking submit ioctl
83 * related stuff, and *only* is tracked in the parent ringbuffer.
84 * And only has "completed" cmd buffers (ie. we already know the
85 * size) added via get_cmd().
86 */
87 struct list_head cmd_list;
88
89 int is_growable;
90 unsigned cmd_count;
91
92 unsigned seqno;
93
94 /* maps fd_bo to idx: */
95 void *bo_table;
96 };
97
to_msm_ringbuffer(struct fd_ringbuffer * x)98 static inline struct msm_ringbuffer * to_msm_ringbuffer(struct fd_ringbuffer *x)
99 {
100 return (struct msm_ringbuffer *)x;
101 }
102
103 #define INIT_SIZE 0x1000
104
105 static pthread_mutex_t idx_lock = PTHREAD_MUTEX_INITIALIZER;
106 drm_private extern pthread_mutex_t table_lock;
107
ring_bo_del(struct fd_device * dev,struct fd_bo * bo)108 static void ring_bo_del(struct fd_device *dev, struct fd_bo *bo)
109 {
110 int ret;
111
112 pthread_mutex_lock(&table_lock);
113 ret = fd_bo_cache_free(&to_msm_device(dev)->ring_cache, bo);
114 pthread_mutex_unlock(&table_lock);
115
116 if (ret == 0)
117 return;
118
119 fd_bo_del(bo);
120 }
121
ring_bo_new(struct fd_device * dev,uint32_t size)122 static struct fd_bo * ring_bo_new(struct fd_device *dev, uint32_t size)
123 {
124 struct fd_bo *bo;
125
126 bo = fd_bo_cache_alloc(&to_msm_device(dev)->ring_cache, &size, 0);
127 if (bo)
128 return bo;
129
130 bo = fd_bo_new(dev, size, 0);
131 if (!bo)
132 return NULL;
133
134 /* keep ringbuffer bo's out of the normal bo cache: */
135 bo->bo_reuse = FALSE;
136
137 return bo;
138 }
139
ring_cmd_del(struct msm_cmd * cmd)140 static void ring_cmd_del(struct msm_cmd *cmd)
141 {
142 if (cmd->ring_bo)
143 ring_bo_del(cmd->ring->pipe->dev, cmd->ring_bo);
144 list_del(&cmd->list);
145 to_msm_ringbuffer(cmd->ring)->cmd_count--;
146 free(cmd->relocs);
147 free(cmd);
148 }
149
ring_cmd_new(struct fd_ringbuffer * ring,uint32_t size)150 static struct msm_cmd * ring_cmd_new(struct fd_ringbuffer *ring, uint32_t size)
151 {
152 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
153 struct msm_cmd *cmd = calloc(1, sizeof(*cmd));
154
155 if (!cmd)
156 return NULL;
157
158 cmd->ring = ring;
159 cmd->ring_bo = ring_bo_new(ring->pipe->dev, size);
160 if (!cmd->ring_bo)
161 goto fail;
162
163 list_addtail(&cmd->list, &msm_ring->cmd_list);
164 msm_ring->cmd_count++;
165
166 return cmd;
167
168 fail:
169 ring_cmd_del(cmd);
170 return NULL;
171 }
172
grow(void * ptr,uint32_t nr,uint32_t * max,uint32_t sz)173 static void *grow(void *ptr, uint32_t nr, uint32_t *max, uint32_t sz)
174 {
175 if ((nr + 1) > *max) {
176 if ((*max * 2) < (nr + 1))
177 *max = nr + 5;
178 else
179 *max = *max * 2;
180 ptr = realloc(ptr, *max * sz);
181 }
182 return ptr;
183 }
184
185 #define APPEND(x, name) ({ \
186 (x)->name = grow((x)->name, (x)->nr_ ## name, &(x)->max_ ## name, sizeof((x)->name[0])); \
187 (x)->nr_ ## name ++; \
188 })
189
current_cmd(struct fd_ringbuffer * ring)190 static struct msm_cmd *current_cmd(struct fd_ringbuffer *ring)
191 {
192 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
193 assert(!LIST_IS_EMPTY(&msm_ring->cmd_list));
194 return LIST_LAST_ENTRY(&msm_ring->cmd_list, struct msm_cmd, list);
195 }
196
append_bo(struct fd_ringbuffer * ring,struct fd_bo * bo)197 static uint32_t append_bo(struct fd_ringbuffer *ring, struct fd_bo *bo)
198 {
199 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
200 uint32_t idx;
201
202 idx = APPEND(&msm_ring->submit, bos);
203 idx = APPEND(msm_ring, bos);
204
205 msm_ring->submit.bos[idx].flags = 0;
206 msm_ring->submit.bos[idx].handle = bo->handle;
207 msm_ring->submit.bos[idx].presumed = to_msm_bo(bo)->presumed;
208
209 msm_ring->bos[idx] = fd_bo_ref(bo);
210
211 return idx;
212 }
213
214 /* add (if needed) bo, return idx: */
bo2idx(struct fd_ringbuffer * ring,struct fd_bo * bo,uint32_t flags)215 static uint32_t bo2idx(struct fd_ringbuffer *ring, struct fd_bo *bo, uint32_t flags)
216 {
217 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
218 struct msm_bo *msm_bo = to_msm_bo(bo);
219 uint32_t idx;
220 pthread_mutex_lock(&idx_lock);
221 if (msm_bo->current_ring_seqno == msm_ring->seqno) {
222 idx = msm_bo->idx;
223 } else {
224 void *val;
225
226 if (!msm_ring->bo_table)
227 msm_ring->bo_table = drmHashCreate();
228
229 if (!drmHashLookup(msm_ring->bo_table, bo->handle, &val)) {
230 /* found */
231 idx = (uint32_t)(uintptr_t)val;
232 } else {
233 idx = append_bo(ring, bo);
234 val = (void *)(uintptr_t)idx;
235 drmHashInsert(msm_ring->bo_table, bo->handle, val);
236 }
237 msm_bo->current_ring_seqno = msm_ring->seqno;
238 msm_bo->idx = idx;
239 }
240 pthread_mutex_unlock(&idx_lock);
241 if (flags & FD_RELOC_READ)
242 msm_ring->submit.bos[idx].flags |= MSM_SUBMIT_BO_READ;
243 if (flags & FD_RELOC_WRITE)
244 msm_ring->submit.bos[idx].flags |= MSM_SUBMIT_BO_WRITE;
245 return idx;
246 }
247
check_cmd_bo(struct fd_ringbuffer * ring,struct drm_msm_gem_submit_cmd * cmd,struct fd_bo * bo)248 static int check_cmd_bo(struct fd_ringbuffer *ring,
249 struct drm_msm_gem_submit_cmd *cmd, struct fd_bo *bo)
250 {
251 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
252 return msm_ring->submit.bos[cmd->submit_idx].handle == bo->handle;
253 }
254
255 /* Ensure that submit has corresponding entry in cmds table for the
256 * target cmdstream buffer:
257 */
get_cmd(struct fd_ringbuffer * ring,struct msm_cmd * target_cmd,uint32_t submit_offset,uint32_t size,uint32_t type)258 static void get_cmd(struct fd_ringbuffer *ring, struct msm_cmd *target_cmd,
259 uint32_t submit_offset, uint32_t size, uint32_t type)
260 {
261 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
262 struct drm_msm_gem_submit_cmd *cmd;
263 uint32_t i;
264
265 /* figure out if we already have a cmd buf: */
266 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
267 cmd = &msm_ring->submit.cmds[i];
268 if ((cmd->submit_offset == submit_offset) &&
269 (cmd->size == size) &&
270 (cmd->type == type) &&
271 check_cmd_bo(ring, cmd, target_cmd->ring_bo))
272 return;
273 }
274
275 /* create cmd buf if not: */
276 i = APPEND(&msm_ring->submit, cmds);
277 APPEND(msm_ring, cmds);
278 msm_ring->cmds[i] = target_cmd;
279 cmd = &msm_ring->submit.cmds[i];
280 cmd->type = type;
281 cmd->submit_idx = bo2idx(ring, target_cmd->ring_bo, FD_RELOC_READ);
282 cmd->submit_offset = submit_offset;
283 cmd->size = size;
284 cmd->pad = 0;
285
286 target_cmd->size = size;
287 }
288
msm_ringbuffer_hostptr(struct fd_ringbuffer * ring)289 static void * msm_ringbuffer_hostptr(struct fd_ringbuffer *ring)
290 {
291 return fd_bo_map(current_cmd(ring)->ring_bo);
292 }
293
find_next_reloc_idx(struct msm_cmd * msm_cmd,uint32_t start,uint32_t offset)294 static uint32_t find_next_reloc_idx(struct msm_cmd *msm_cmd,
295 uint32_t start, uint32_t offset)
296 {
297 uint32_t i;
298
299 /* a binary search would be more clever.. */
300 for (i = start; i < msm_cmd->nr_relocs; i++) {
301 struct drm_msm_gem_submit_reloc *reloc = &msm_cmd->relocs[i];
302 if (reloc->submit_offset >= offset)
303 return i;
304 }
305
306 return i;
307 }
308
delete_cmds(struct msm_ringbuffer * msm_ring)309 static void delete_cmds(struct msm_ringbuffer *msm_ring)
310 {
311 struct msm_cmd *cmd, *tmp;
312
313 LIST_FOR_EACH_ENTRY_SAFE(cmd, tmp, &msm_ring->cmd_list, list) {
314 ring_cmd_del(cmd);
315 }
316 }
317
flush_reset(struct fd_ringbuffer * ring)318 static void flush_reset(struct fd_ringbuffer *ring)
319 {
320 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
321 unsigned i;
322
323 for (i = 0; i < msm_ring->nr_bos; i++) {
324 struct msm_bo *msm_bo = to_msm_bo(msm_ring->bos[i]);
325 msm_bo->current_ring_seqno = 0;
326 fd_bo_del(&msm_bo->base);
327 }
328
329 /* for each of the cmd buffers, clear their reloc's: */
330 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
331 struct msm_cmd *target_cmd = msm_ring->cmds[i];
332 target_cmd->nr_relocs = 0;
333 }
334
335 msm_ring->submit.nr_cmds = 0;
336 msm_ring->submit.nr_bos = 0;
337 msm_ring->nr_cmds = 0;
338 msm_ring->nr_bos = 0;
339
340 if (msm_ring->bo_table) {
341 drmHashDestroy(msm_ring->bo_table);
342 msm_ring->bo_table = NULL;
343 }
344
345 if (msm_ring->is_growable) {
346 delete_cmds(msm_ring);
347 } else {
348 /* in old mode, just reset the # of relocs: */
349 current_cmd(ring)->nr_relocs = 0;
350 }
351 }
352
finalize_current_cmd(struct fd_ringbuffer * ring,uint32_t * last_start)353 static void finalize_current_cmd(struct fd_ringbuffer *ring, uint32_t *last_start)
354 {
355 uint32_t submit_offset, size, type;
356 struct fd_ringbuffer *parent;
357
358 if (ring->parent) {
359 parent = ring->parent;
360 type = MSM_SUBMIT_CMD_IB_TARGET_BUF;
361 } else {
362 parent = ring;
363 type = MSM_SUBMIT_CMD_BUF;
364 }
365
366 submit_offset = offset_bytes(last_start, ring->start);
367 size = offset_bytes(ring->cur, last_start);
368
369 get_cmd(parent, current_cmd(ring), submit_offset, size, type);
370 }
371
dump_submit(struct msm_ringbuffer * msm_ring)372 static void dump_submit(struct msm_ringbuffer *msm_ring)
373 {
374 uint32_t i, j;
375
376 for (i = 0; i < msm_ring->submit.nr_bos; i++) {
377 struct drm_msm_gem_submit_bo *bo = &msm_ring->submit.bos[i];
378 ERROR_MSG(" bos[%d]: handle=%u, flags=%x", i, bo->handle, bo->flags);
379 }
380 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
381 struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i];
382 struct drm_msm_gem_submit_reloc *relocs = U642VOID(cmd->relocs);
383 ERROR_MSG(" cmd[%d]: type=%u, submit_idx=%u, submit_offset=%u, size=%u",
384 i, cmd->type, cmd->submit_idx, cmd->submit_offset, cmd->size);
385 for (j = 0; j < cmd->nr_relocs; j++) {
386 struct drm_msm_gem_submit_reloc *r = &relocs[j];
387 ERROR_MSG(" reloc[%d]: submit_offset=%u, or=%08x, shift=%d, reloc_idx=%u"
388 ", reloc_offset=%"PRIu64, j, r->submit_offset, r->or, r->shift,
389 r->reloc_idx, r->reloc_offset);
390 }
391 }
392 }
393
msm_ringbuffer_flush(struct fd_ringbuffer * ring,uint32_t * last_start,int in_fence_fd,int * out_fence_fd)394 static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start,
395 int in_fence_fd, int *out_fence_fd)
396 {
397 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
398 struct drm_msm_gem_submit req = {
399 .flags = to_msm_pipe(ring->pipe)->pipe,
400 .queueid = to_msm_pipe(ring->pipe)->queue_id,
401 };
402 uint32_t i;
403 int ret;
404
405 if (in_fence_fd != -1) {
406 req.flags |= MSM_SUBMIT_FENCE_FD_IN | MSM_SUBMIT_NO_IMPLICIT;
407 req.fence_fd = in_fence_fd;
408 }
409
410 if (out_fence_fd) {
411 req.flags |= MSM_SUBMIT_FENCE_FD_OUT;
412 }
413
414 finalize_current_cmd(ring, last_start);
415
416 /* needs to be after get_cmd() as that could create bos/cmds table: */
417 req.bos = VOID2U64(msm_ring->submit.bos),
418 req.nr_bos = msm_ring->submit.nr_bos;
419 req.cmds = VOID2U64(msm_ring->submit.cmds),
420 req.nr_cmds = msm_ring->submit.nr_cmds;
421
422 /* for each of the cmd's fix up their reloc's: */
423 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
424 struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i];
425 struct msm_cmd *msm_cmd = msm_ring->cmds[i];
426 uint32_t a = find_next_reloc_idx(msm_cmd, 0, cmd->submit_offset);
427 uint32_t b = find_next_reloc_idx(msm_cmd, a, cmd->submit_offset + cmd->size);
428 cmd->relocs = VOID2U64(&msm_cmd->relocs[a]);
429 cmd->nr_relocs = (b > a) ? b - a : 0;
430 }
431
432 DEBUG_MSG("nr_cmds=%u, nr_bos=%u", req.nr_cmds, req.nr_bos);
433
434 ret = drmCommandWriteRead(ring->pipe->dev->fd, DRM_MSM_GEM_SUBMIT,
435 &req, sizeof(req));
436 if (ret) {
437 ERROR_MSG("submit failed: %d (%s)", ret, strerror(errno));
438 dump_submit(msm_ring);
439 } else if (!ret) {
440 /* update timestamp on all rings associated with submit: */
441 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
442 struct msm_cmd *msm_cmd = msm_ring->cmds[i];
443 msm_cmd->ring->last_timestamp = req.fence;
444 }
445
446 if (out_fence_fd) {
447 *out_fence_fd = req.fence_fd;
448 }
449 }
450
451 flush_reset(ring);
452
453 return ret;
454 }
455
msm_ringbuffer_grow(struct fd_ringbuffer * ring,uint32_t size)456 static void msm_ringbuffer_grow(struct fd_ringbuffer *ring, uint32_t size)
457 {
458 assert(to_msm_ringbuffer(ring)->is_growable);
459 finalize_current_cmd(ring, ring->last_start);
460 ring_cmd_new(ring, size);
461 }
462
msm_ringbuffer_reset(struct fd_ringbuffer * ring)463 static void msm_ringbuffer_reset(struct fd_ringbuffer *ring)
464 {
465 flush_reset(ring);
466 }
467
msm_ringbuffer_emit_reloc(struct fd_ringbuffer * ring,const struct fd_reloc * r)468 static void msm_ringbuffer_emit_reloc(struct fd_ringbuffer *ring,
469 const struct fd_reloc *r)
470 {
471 struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring;
472 struct msm_bo *msm_bo = to_msm_bo(r->bo);
473 struct drm_msm_gem_submit_reloc *reloc;
474 struct msm_cmd *cmd = current_cmd(ring);
475 uint32_t idx = APPEND(cmd, relocs);
476 uint32_t addr;
477
478 reloc = &cmd->relocs[idx];
479
480 reloc->reloc_idx = bo2idx(parent, r->bo, r->flags);
481 reloc->reloc_offset = r->offset;
482 reloc->or = r->or;
483 reloc->shift = r->shift;
484 reloc->submit_offset = offset_bytes(ring->cur, ring->start);
485
486 addr = msm_bo->presumed;
487 if (reloc->shift < 0)
488 addr >>= -reloc->shift;
489 else
490 addr <<= reloc->shift;
491 (*ring->cur++) = addr | r->or;
492
493 if (ring->pipe->gpu_id >= 500) {
494 struct drm_msm_gem_submit_reloc *reloc_hi;
495
496 /* NOTE: grab reloc_idx *before* APPEND() since that could
497 * realloc() meaning that 'reloc' ptr is no longer valid:
498 */
499 uint32_t reloc_idx = reloc->reloc_idx;
500
501 idx = APPEND(cmd, relocs);
502
503 reloc_hi = &cmd->relocs[idx];
504
505 reloc_hi->reloc_idx = reloc_idx;
506 reloc_hi->reloc_offset = r->offset;
507 reloc_hi->or = r->orhi;
508 reloc_hi->shift = r->shift - 32;
509 reloc_hi->submit_offset = offset_bytes(ring->cur, ring->start);
510
511 addr = msm_bo->presumed >> 32;
512 if (reloc_hi->shift < 0)
513 addr >>= -reloc_hi->shift;
514 else
515 addr <<= reloc_hi->shift;
516 (*ring->cur++) = addr | r->orhi;
517 }
518 }
519
msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer * ring,struct fd_ringbuffer * target,uint32_t cmd_idx,uint32_t submit_offset,uint32_t size)520 static uint32_t msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
521 struct fd_ringbuffer *target, uint32_t cmd_idx,
522 uint32_t submit_offset, uint32_t size)
523 {
524 struct msm_cmd *cmd = NULL;
525 uint32_t idx = 0;
526
527 LIST_FOR_EACH_ENTRY(cmd, &to_msm_ringbuffer(target)->cmd_list, list) {
528 if (idx == cmd_idx)
529 break;
530 idx++;
531 }
532
533 assert(cmd && (idx == cmd_idx));
534
535 if (idx < (to_msm_ringbuffer(target)->cmd_count - 1)) {
536 /* All but the last cmd buffer is fully "baked" (ie. already has
537 * done get_cmd() to add it to the cmds table). But in this case,
538 * the size we get is invalid (since it is calculated from the
539 * last cmd buffer):
540 */
541 size = cmd->size;
542 } else {
543 get_cmd(ring, cmd, submit_offset, size, MSM_SUBMIT_CMD_IB_TARGET_BUF);
544 }
545
546 msm_ringbuffer_emit_reloc(ring, &(struct fd_reloc){
547 .bo = cmd->ring_bo,
548 .flags = FD_RELOC_READ,
549 .offset = submit_offset,
550 });
551
552 return size;
553 }
554
msm_ringbuffer_cmd_count(struct fd_ringbuffer * ring)555 static uint32_t msm_ringbuffer_cmd_count(struct fd_ringbuffer *ring)
556 {
557 return to_msm_ringbuffer(ring)->cmd_count;
558 }
559
msm_ringbuffer_destroy(struct fd_ringbuffer * ring)560 static void msm_ringbuffer_destroy(struct fd_ringbuffer *ring)
561 {
562 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
563
564 flush_reset(ring);
565 delete_cmds(msm_ring);
566
567 free(msm_ring->submit.cmds);
568 free(msm_ring->submit.bos);
569 free(msm_ring->bos);
570 free(msm_ring->cmds);
571 free(msm_ring);
572 }
573
574 static const struct fd_ringbuffer_funcs funcs = {
575 .hostptr = msm_ringbuffer_hostptr,
576 .flush = msm_ringbuffer_flush,
577 .grow = msm_ringbuffer_grow,
578 .reset = msm_ringbuffer_reset,
579 .emit_reloc = msm_ringbuffer_emit_reloc,
580 .emit_reloc_ring = msm_ringbuffer_emit_reloc_ring,
581 .cmd_count = msm_ringbuffer_cmd_count,
582 .destroy = msm_ringbuffer_destroy,
583 };
584
msm_ringbuffer_new(struct fd_pipe * pipe,uint32_t size)585 drm_private struct fd_ringbuffer * msm_ringbuffer_new(struct fd_pipe *pipe,
586 uint32_t size)
587 {
588 struct msm_ringbuffer *msm_ring;
589 struct fd_ringbuffer *ring;
590
591 msm_ring = calloc(1, sizeof(*msm_ring));
592 if (!msm_ring) {
593 ERROR_MSG("allocation failed");
594 return NULL;
595 }
596
597 if (size == 0) {
598 assert(pipe->dev->version >= FD_VERSION_UNLIMITED_CMDS);
599 size = INIT_SIZE;
600 msm_ring->is_growable = TRUE;
601 }
602
603 list_inithead(&msm_ring->cmd_list);
604 msm_ring->seqno = ++to_msm_device(pipe->dev)->ring_cnt;
605
606 ring = &msm_ring->base;
607 ring->funcs = &funcs;
608 ring->size = size;
609 ring->pipe = pipe; /* needed in ring_cmd_new() */
610
611 ring_cmd_new(ring, size);
612
613 return ring;
614 }
615