1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
4 * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
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:
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
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
26 * Rob Clark <robclark@freedesktop.org>
32 #include "freedreno_ringbuffer.h"
35 /* represents a single cmd buffer in the submit ioctl. Each cmd buffer has
36 * a backing bo, and a reloc table.
39 struct list_head list;
41 struct fd_ringbuffer *ring;
42 struct fd_bo *ring_bo;
45 DECLARE_ARRAY(struct drm_msm_gem_submit_reloc, relocs);
50 struct msm_ringbuffer {
51 struct fd_ringbuffer base;
55 /* submit ioctl related tables:
56 * Note that bos and cmds are tracked by the parent ringbuffer, since
57 * that is global to the submit ioctl call. The reloc's table is tracked
62 DECLARE_ARRAY(struct drm_msm_gem_submit_bo, bos);
65 DECLARE_ARRAY(struct drm_msm_gem_submit_cmd, cmds);
68 /* should have matching entries in submit.bos: */
69 /* Note, only in parent ringbuffer */
70 DECLARE_ARRAY(struct fd_bo *, bos);
72 /* should have matching entries in submit.cmds: */
73 DECLARE_ARRAY(struct msm_cmd *, cmds);
75 /* List of physical cmdstream buffers (msm_cmd) assocated with this
76 * logical fd_ringbuffer.
78 * Note that this is different from msm_ringbuffer::cmds (which
79 * shadows msm_ringbuffer::submit::cmds for tracking submit ioctl
80 * related stuff, and *only* is tracked in the parent ringbuffer.
81 * And only has "completed" cmd buffers (ie. we already know the
82 * size) added via get_cmd().
84 struct list_head cmd_list;
91 /* maps fd_bo to idx: */
95 static inline struct msm_ringbuffer * to_msm_ringbuffer(struct fd_ringbuffer *x)
97 return (struct msm_ringbuffer *)x;
100 static void msm_ringbuffer_unref(struct fd_ringbuffer *ring);
101 static void msm_ringbuffer_ref(struct fd_ringbuffer *ring);
103 #define INIT_SIZE 0x1000
105 static pthread_mutex_t idx_lock = PTHREAD_MUTEX_INITIALIZER;
107 static void ring_cmd_del(struct msm_cmd *cmd)
109 fd_bo_del(cmd->ring_bo);
110 list_del(&cmd->list);
111 to_msm_ringbuffer(cmd->ring)->cmd_count--;
116 static struct msm_cmd * ring_cmd_new(struct fd_ringbuffer *ring, uint32_t size)
118 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
119 struct msm_cmd *cmd = calloc(1, sizeof(*cmd));
125 cmd->ring_bo = fd_bo_new_ring(ring->pipe->dev, size, 0);
129 list_addtail(&cmd->list, &msm_ring->cmd_list);
130 msm_ring->cmd_count++;
139 static struct msm_cmd *current_cmd(struct fd_ringbuffer *ring)
141 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
142 assert(!LIST_IS_EMPTY(&msm_ring->cmd_list));
143 return LIST_LAST_ENTRY(&msm_ring->cmd_list, struct msm_cmd, list);
146 static uint32_t append_bo(struct fd_ringbuffer *ring, struct fd_bo *bo)
148 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
151 idx = APPEND(&msm_ring->submit, bos);
152 idx = APPEND(msm_ring, bos);
154 msm_ring->submit.bos[idx].flags = 0;
155 msm_ring->submit.bos[idx].handle = bo->handle;
156 msm_ring->submit.bos[idx].presumed = to_msm_bo(bo)->presumed;
158 msm_ring->bos[idx] = fd_bo_ref(bo);
163 /* add (if needed) bo, return idx: */
164 static uint32_t bo2idx(struct fd_ringbuffer *ring, struct fd_bo *bo, uint32_t flags)
166 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
167 struct msm_bo *msm_bo = to_msm_bo(bo);
169 pthread_mutex_lock(&idx_lock);
170 if (msm_bo->current_ring_seqno == msm_ring->seqno) {
175 if (!msm_ring->bo_table)
176 msm_ring->bo_table = drmHashCreate();
178 if (!drmHashLookup(msm_ring->bo_table, bo->handle, &val)) {
180 idx = (uint32_t)(uintptr_t)val;
182 idx = append_bo(ring, bo);
183 val = (void *)(uintptr_t)idx;
184 drmHashInsert(msm_ring->bo_table, bo->handle, val);
186 msm_bo->current_ring_seqno = msm_ring->seqno;
189 pthread_mutex_unlock(&idx_lock);
190 if (flags & FD_RELOC_READ)
191 msm_ring->submit.bos[idx].flags |= MSM_SUBMIT_BO_READ;
192 if (flags & FD_RELOC_WRITE)
193 msm_ring->submit.bos[idx].flags |= MSM_SUBMIT_BO_WRITE;
197 static int check_cmd_bo(struct fd_ringbuffer *ring,
198 struct drm_msm_gem_submit_cmd *cmd, struct fd_bo *bo)
200 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
201 return msm_ring->submit.bos[cmd->submit_idx].handle == bo->handle;
204 /* Ensure that submit has corresponding entry in cmds table for the
205 * target cmdstream buffer:
207 * Returns TRUE if new cmd added (else FALSE if it was already in
210 static int get_cmd(struct fd_ringbuffer *ring, struct msm_cmd *target_cmd,
211 uint32_t submit_offset, uint32_t size, uint32_t type)
213 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
214 struct drm_msm_gem_submit_cmd *cmd;
217 /* figure out if we already have a cmd buf: */
218 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
219 cmd = &msm_ring->submit.cmds[i];
220 if ((cmd->submit_offset == submit_offset) &&
221 (cmd->size == size) &&
222 (cmd->type == type) &&
223 check_cmd_bo(ring, cmd, target_cmd->ring_bo))
227 /* create cmd buf if not: */
228 i = APPEND(&msm_ring->submit, cmds);
229 APPEND(msm_ring, cmds);
230 msm_ring->cmds[i] = target_cmd;
231 cmd = &msm_ring->submit.cmds[i];
233 cmd->submit_idx = bo2idx(ring, target_cmd->ring_bo, FD_RELOC_READ);
234 cmd->submit_offset = submit_offset;
238 target_cmd->size = size;
243 static void * msm_ringbuffer_hostptr(struct fd_ringbuffer *ring)
245 return fd_bo_map(current_cmd(ring)->ring_bo);
248 static uint32_t find_next_reloc_idx(struct msm_cmd *msm_cmd,
249 uint32_t start, uint32_t offset)
253 /* a binary search would be more clever.. */
254 for (i = start; i < msm_cmd->nr_relocs; i++) {
255 struct drm_msm_gem_submit_reloc *reloc = &msm_cmd->relocs[i];
256 if (reloc->submit_offset >= offset)
263 static void delete_cmds(struct msm_ringbuffer *msm_ring)
265 struct msm_cmd *cmd, *tmp;
267 LIST_FOR_EACH_ENTRY_SAFE(cmd, tmp, &msm_ring->cmd_list, list) {
272 static void flush_reset(struct fd_ringbuffer *ring)
274 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
277 for (i = 0; i < msm_ring->nr_bos; i++) {
278 struct msm_bo *msm_bo = to_msm_bo(msm_ring->bos[i]);
281 msm_bo->current_ring_seqno = 0;
282 fd_bo_del(&msm_bo->base);
285 /* for each of the cmd buffers, clear their reloc's: */
286 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
287 struct msm_cmd *target_cmd = msm_ring->cmds[i];
290 target_cmd->nr_relocs = 0;
293 msm_ring->submit.nr_cmds = 0;
294 msm_ring->submit.nr_bos = 0;
295 msm_ring->nr_cmds = 0;
296 msm_ring->nr_bos = 0;
298 if (msm_ring->bo_table) {
299 drmHashDestroy(msm_ring->bo_table);
300 msm_ring->bo_table = NULL;
303 if (msm_ring->is_growable) {
304 delete_cmds(msm_ring);
306 /* in old mode, just reset the # of relocs: */
307 current_cmd(ring)->nr_relocs = 0;
311 static void finalize_current_cmd(struct fd_ringbuffer *ring, uint32_t *last_start)
313 uint32_t submit_offset, size, type;
314 struct fd_ringbuffer *parent;
317 parent = ring->parent;
318 type = MSM_SUBMIT_CMD_IB_TARGET_BUF;
321 type = MSM_SUBMIT_CMD_BUF;
324 submit_offset = offset_bytes(last_start, ring->start);
325 size = offset_bytes(ring->cur, last_start);
327 get_cmd(parent, current_cmd(ring), submit_offset, size, type);
330 static void dump_submit(struct msm_ringbuffer *msm_ring)
334 for (i = 0; i < msm_ring->submit.nr_bos; i++) {
335 struct drm_msm_gem_submit_bo *bo = &msm_ring->submit.bos[i];
336 ERROR_MSG(" bos[%d]: handle=%u, flags=%x", i, bo->handle, bo->flags);
338 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
339 struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i];
340 struct drm_msm_gem_submit_reloc *relocs = U642VOID(cmd->relocs);
341 ERROR_MSG(" cmd[%d]: type=%u, submit_idx=%u, submit_offset=%u, size=%u",
342 i, cmd->type, cmd->submit_idx, cmd->submit_offset, cmd->size);
343 for (j = 0; j < cmd->nr_relocs; j++) {
344 struct drm_msm_gem_submit_reloc *r = &relocs[j];
345 ERROR_MSG(" reloc[%d]: submit_offset=%u, or=%08x, shift=%d, reloc_idx=%u"
346 ", reloc_offset=%"PRIu64, j, r->submit_offset, r->or, r->shift,
347 r->reloc_idx, r->reloc_offset);
352 static struct drm_msm_gem_submit_reloc *
353 handle_stateobj_relocs(struct fd_ringbuffer *parent, struct fd_ringbuffer *stateobj,
354 struct drm_msm_gem_submit_reloc *orig_relocs, unsigned nr_relocs)
356 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(stateobj);
357 struct drm_msm_gem_submit_reloc *relocs = malloc(nr_relocs * sizeof(*relocs));
360 for (i = 0; i < nr_relocs; i++) {
361 unsigned idx = orig_relocs[i].reloc_idx;
362 struct fd_bo *bo = msm_ring->bos[idx];
365 if (msm_ring->submit.bos[idx].flags & MSM_SUBMIT_BO_READ)
366 flags |= FD_RELOC_READ;
367 if (msm_ring->submit.bos[idx].flags & MSM_SUBMIT_BO_WRITE)
368 flags |= FD_RELOC_WRITE;
370 relocs[i] = orig_relocs[i];
371 relocs[i].reloc_idx = bo2idx(parent, bo, flags);
377 static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start,
378 int in_fence_fd, int *out_fence_fd)
380 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
381 struct drm_msm_gem_submit req = {
382 .flags = to_msm_pipe(ring->pipe)->pipe,
383 .queueid = to_msm_pipe(ring->pipe)->queue_id,
388 assert(!ring->parent);
390 if (in_fence_fd != -1) {
391 req.flags |= MSM_SUBMIT_FENCE_FD_IN | MSM_SUBMIT_NO_IMPLICIT;
392 req.fence_fd = in_fence_fd;
396 req.flags |= MSM_SUBMIT_FENCE_FD_OUT;
399 finalize_current_cmd(ring, last_start);
401 /* for each of the cmd's fix up their reloc's: */
402 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
403 struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i];
404 struct msm_cmd *msm_cmd = msm_ring->cmds[i];
405 uint32_t a = find_next_reloc_idx(msm_cmd, 0, cmd->submit_offset);
406 uint32_t b = find_next_reloc_idx(msm_cmd, a, cmd->submit_offset + cmd->size);
407 struct drm_msm_gem_submit_reloc *relocs = &msm_cmd->relocs[a];
408 unsigned nr_relocs = (b > a) ? b - a : 0;
410 /* for reusable stateobjs, the reloc table has reloc_idx that
411 * points into it's own private bos table, rather than the global
412 * bos table used for the submit, so we need to add the stateobj's
413 * bos to the global table and construct new relocs table with
414 * corresponding reloc_idx
416 if (msm_cmd->ring->flags & FD_RINGBUFFER_OBJECT) {
417 relocs = handle_stateobj_relocs(ring, msm_cmd->ring,
421 cmd->relocs = VOID2U64(relocs);
422 cmd->nr_relocs = nr_relocs;
425 /* needs to be after get_cmd() as that could create bos/cmds table: */
426 req.bos = VOID2U64(msm_ring->submit.bos),
427 req.nr_bos = msm_ring->submit.nr_bos;
428 req.cmds = VOID2U64(msm_ring->submit.cmds),
429 req.nr_cmds = msm_ring->submit.nr_cmds;
431 DEBUG_MSG("nr_cmds=%u, nr_bos=%u", req.nr_cmds, req.nr_bos);
433 ret = drmCommandWriteRead(ring->pipe->dev->fd, DRM_MSM_GEM_SUBMIT,
436 ERROR_MSG("submit failed: %d (%s)", ret, strerror(errno));
437 dump_submit(msm_ring);
439 /* update timestamp on all rings associated with submit: */
440 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
441 struct msm_cmd *msm_cmd = msm_ring->cmds[i];
442 msm_cmd->ring->last_timestamp = req.fence;
446 *out_fence_fd = req.fence_fd;
450 /* free dynamically constructed stateobj relocs tables: */
451 for (i = 0; i < msm_ring->submit.nr_cmds; i++) {
452 struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i];
453 struct msm_cmd *msm_cmd = msm_ring->cmds[i];
454 if (msm_cmd->ring->flags & FD_RINGBUFFER_OBJECT) {
455 /* we could have dropped last reference: */
456 msm_ring->cmds[i] = NULL;
457 msm_ringbuffer_unref(msm_cmd->ring);
458 free(U642VOID(cmd->relocs));
467 static void msm_ringbuffer_grow(struct fd_ringbuffer *ring, uint32_t size)
469 assert(to_msm_ringbuffer(ring)->is_growable);
470 finalize_current_cmd(ring, ring->last_start);
471 ring_cmd_new(ring, size);
474 static void msm_ringbuffer_reset(struct fd_ringbuffer *ring)
479 static void msm_ringbuffer_emit_reloc(struct fd_ringbuffer *ring,
480 const struct fd_reloc *r)
482 struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring;
483 struct msm_bo *msm_bo = to_msm_bo(r->bo);
484 struct drm_msm_gem_submit_reloc *reloc;
485 struct msm_cmd *cmd = current_cmd(ring);
486 uint32_t idx = APPEND(cmd, relocs);
489 reloc = &cmd->relocs[idx];
491 reloc->reloc_idx = bo2idx(parent, r->bo, r->flags);
492 reloc->reloc_offset = r->offset;
494 reloc->shift = r->shift;
495 reloc->submit_offset = offset_bytes(ring->cur, ring->start);
497 addr = msm_bo->presumed;
498 if (reloc->shift < 0)
499 addr >>= -reloc->shift;
501 addr <<= reloc->shift;
502 (*ring->cur++) = addr | r->or;
504 if (ring->pipe->gpu_id >= 500) {
505 struct drm_msm_gem_submit_reloc *reloc_hi;
507 /* NOTE: grab reloc_idx *before* APPEND() since that could
508 * realloc() meaning that 'reloc' ptr is no longer valid:
510 uint32_t reloc_idx = reloc->reloc_idx;
512 idx = APPEND(cmd, relocs);
514 reloc_hi = &cmd->relocs[idx];
516 reloc_hi->reloc_idx = reloc_idx;
517 reloc_hi->reloc_offset = r->offset;
518 reloc_hi->or = r->orhi;
519 reloc_hi->shift = r->shift - 32;
520 reloc_hi->submit_offset = offset_bytes(ring->cur, ring->start);
522 addr = msm_bo->presumed >> 32;
523 if (reloc_hi->shift < 0)
524 addr >>= -reloc_hi->shift;
526 addr <<= reloc_hi->shift;
527 (*ring->cur++) = addr | r->orhi;
531 static uint32_t msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
532 struct fd_ringbuffer *target, uint32_t cmd_idx,
533 uint32_t submit_offset, uint32_t size)
535 struct msm_cmd *cmd = NULL;
537 int added_cmd = FALSE;
539 LIST_FOR_EACH_ENTRY(cmd, &to_msm_ringbuffer(target)->cmd_list, list) {
545 assert(cmd && (idx == cmd_idx));
547 if (idx < (to_msm_ringbuffer(target)->cmd_count - 1)) {
548 /* All but the last cmd buffer is fully "baked" (ie. already has
549 * done get_cmd() to add it to the cmds table). But in this case,
550 * the size we get is invalid (since it is calculated from the
555 struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring;
556 added_cmd = get_cmd(parent, cmd, submit_offset, size,
557 MSM_SUBMIT_CMD_IB_TARGET_BUF);
560 msm_ringbuffer_emit_reloc(ring, &(struct fd_reloc){
562 .flags = FD_RELOC_READ,
563 .offset = submit_offset,
566 /* Unlike traditional ringbuffers which are deleted as a set (after
567 * being flushed), mesa can't really guarantee that a stateobj isn't
568 * destroyed after emitted but before flush, so we must hold a ref:
570 if (added_cmd && (target->flags & FD_RINGBUFFER_OBJECT)) {
571 msm_ringbuffer_ref(target);
577 static uint32_t msm_ringbuffer_cmd_count(struct fd_ringbuffer *ring)
579 return to_msm_ringbuffer(ring)->cmd_count;
582 static void msm_ringbuffer_unref(struct fd_ringbuffer *ring)
584 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
586 if (!atomic_dec_and_test(&msm_ring->refcnt))
590 delete_cmds(msm_ring);
592 free(msm_ring->submit.cmds);
593 free(msm_ring->submit.bos);
595 free(msm_ring->cmds);
599 static void msm_ringbuffer_ref(struct fd_ringbuffer *ring)
601 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
602 atomic_inc(&msm_ring->refcnt);
605 static const struct fd_ringbuffer_funcs funcs = {
606 .hostptr = msm_ringbuffer_hostptr,
607 .flush = msm_ringbuffer_flush,
608 .grow = msm_ringbuffer_grow,
609 .reset = msm_ringbuffer_reset,
610 .emit_reloc = msm_ringbuffer_emit_reloc,
611 .emit_reloc_ring = msm_ringbuffer_emit_reloc_ring,
612 .cmd_count = msm_ringbuffer_cmd_count,
613 .destroy = msm_ringbuffer_unref,
616 drm_private struct fd_ringbuffer * msm_ringbuffer_new(struct fd_pipe *pipe,
617 uint32_t size, enum fd_ringbuffer_flags flags)
619 struct msm_ringbuffer *msm_ring;
620 struct fd_ringbuffer *ring;
622 msm_ring = calloc(1, sizeof(*msm_ring));
624 ERROR_MSG("allocation failed");
629 assert(pipe->dev->version >= FD_VERSION_UNLIMITED_CMDS);
631 msm_ring->is_growable = TRUE;
634 list_inithead(&msm_ring->cmd_list);
635 msm_ring->seqno = ++to_msm_device(pipe->dev)->ring_cnt;
636 atomic_set(&msm_ring->refcnt, 1);
638 ring = &msm_ring->base;
639 ring->funcs = &funcs;
641 ring->pipe = pipe; /* needed in ring_cmd_new() */
643 ring_cmd_new(ring, size);