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>
35 #include "freedreno_ringbuffer.h"
38 struct msm_ringbuffer {
39 struct fd_ringbuffer base;
40 struct fd_bo *ring_bo;
42 struct list_head submit_list;
45 struct drm_msm_gem_submit_bo *bos;
46 uint32_t nr_bos, max_bos;
49 struct drm_msm_gem_submit_cmd *cmds;
50 uint32_t nr_cmds, max_cmds;
51 struct fd_ringbuffer **rings;
52 uint32_t nr_rings, max_rings;
55 struct drm_msm_gem_submit_reloc *relocs;
56 uint32_t nr_relocs, max_relocs;
59 static void *grow(void *ptr, uint32_t nr, uint32_t *max, uint32_t sz)
61 if ((nr + 1) > *max) {
62 if ((*max * 2) < (nr + 1))
66 ptr = realloc(ptr, *max * sz);
71 #define APPEND(x, name) ({ \
72 (x)->name = grow((x)->name, (x)->nr_ ## name, &(x)->max_ ## name, sizeof((x)->name[0])); \
73 (x)->nr_ ## name ++; \
76 static inline struct msm_ringbuffer * to_msm_ringbuffer(struct fd_ringbuffer *x)
78 return (struct msm_ringbuffer *)x;
81 /* add (if needed) bo, return idx: */
82 static uint32_t bo2idx(struct fd_ringbuffer *ring, struct fd_bo *bo, uint32_t flags)
84 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
85 struct msm_bo *msm_bo = to_msm_bo(bo);
86 int id = ring->pipe->id;
88 if (!msm_bo->indexp1[id]) {
89 struct list_head *list = &msm_bo->list[id];
90 idx = APPEND(msm_ring, bos);
91 msm_ring->bos[idx].flags = 0;
92 msm_ring->bos[idx].handle = bo->handle;
93 msm_ring->bos[idx].presumed = msm_bo->presumed;
94 msm_bo->indexp1[id] = idx + 1;
96 assert(LIST_IS_EMPTY(list));
98 list_addtail(list, &msm_ring->submit_list);
100 idx = msm_bo->indexp1[id] - 1;
102 if (flags & FD_RELOC_READ)
103 msm_ring->bos[idx].flags |= MSM_SUBMIT_BO_READ;
104 if (flags & FD_RELOC_WRITE)
105 msm_ring->bos[idx].flags |= MSM_SUBMIT_BO_WRITE;
109 static int check_cmd_bo(struct fd_ringbuffer *ring,
110 struct drm_msm_gem_submit_cmd *cmd, struct fd_bo *bo)
112 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
113 return msm_ring->bos[cmd->submit_idx].handle == bo->handle;
116 static uint32_t offset_bytes(void *end, void *start)
118 return ((char *)end) - ((char *)start);
121 static struct drm_msm_gem_submit_cmd * get_cmd(struct fd_ringbuffer *ring,
122 struct fd_ringbuffer *target_ring, struct fd_bo *target_bo,
123 uint32_t submit_offset, uint32_t size, uint32_t type)
125 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
126 struct drm_msm_gem_submit_cmd *cmd = NULL;
129 /* figure out if we already have a cmd buf: */
130 for (i = 0; i < msm_ring->nr_cmds; i++) {
131 cmd = &msm_ring->cmds[i];
132 if ((cmd->submit_offset == submit_offset) &&
133 (cmd->size == size) &&
134 (cmd->type == type) &&
135 check_cmd_bo(ring, cmd, target_bo))
140 /* create cmd buf if not: */
142 uint32_t idx = APPEND(msm_ring, cmds);
143 APPEND(msm_ring, rings);
144 msm_ring->rings[idx] = target_ring;
145 cmd = &msm_ring->cmds[idx];
147 cmd->submit_idx = bo2idx(ring, target_bo, FD_RELOC_READ);
148 cmd->submit_offset = submit_offset;
156 static void * msm_ringbuffer_hostptr(struct fd_ringbuffer *ring)
158 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
159 return fd_bo_map(msm_ring->ring_bo);
162 static uint32_t find_next_reloc_idx(struct msm_ringbuffer *msm_ring,
163 uint32_t start, uint32_t offset)
167 /* a binary search would be more clever.. */
168 for (i = start; i < msm_ring->nr_relocs; i++) {
169 struct drm_msm_gem_submit_reloc *reloc = &msm_ring->relocs[i];
170 if (reloc->submit_offset >= offset)
177 static void flush_reset(struct fd_ringbuffer *ring)
179 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
182 /* for each of the cmd buffers, clear their reloc's: */
183 for (i = 0; i < msm_ring->nr_cmds; i++) {
184 struct msm_ringbuffer *target_ring = to_msm_ringbuffer(msm_ring->rings[i]);
185 target_ring->nr_relocs = 0;
188 msm_ring->nr_relocs = 0;
189 msm_ring->nr_cmds = 0;
190 msm_ring->nr_bos = 0;
193 static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start)
195 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
196 struct fd_bo *ring_bo = msm_ring->ring_bo;
197 struct drm_msm_gem_submit req = {
198 .pipe = to_msm_pipe(ring->pipe)->pipe,
200 struct msm_bo *msm_bo = NULL, *tmp;
201 uint32_t i, submit_offset, size;
202 int ret, id = ring->pipe->id;
204 submit_offset = offset_bytes(last_start, ring->start);
205 size = offset_bytes(ring->cur, last_start);
207 get_cmd(ring, ring, ring_bo, submit_offset, size, MSM_SUBMIT_CMD_BUF);
209 /* needs to be after get_cmd() as that could create bos/cmds table: */
210 req.bos = VOID2U64(msm_ring->bos),
211 req.nr_bos = msm_ring->nr_bos;
212 req.cmds = VOID2U64(msm_ring->cmds),
213 req.nr_cmds = msm_ring->nr_cmds;
215 /* for each of the cmd's fix up their reloc's: */
216 for (i = 0; i < msm_ring->nr_cmds; i++) {
217 struct drm_msm_gem_submit_cmd *cmd = &msm_ring->cmds[i];
218 struct msm_ringbuffer *target_ring = to_msm_ringbuffer(msm_ring->rings[i]);
219 uint32_t a = find_next_reloc_idx(target_ring, 0, cmd->submit_offset);
220 uint32_t b = find_next_reloc_idx(target_ring, a, cmd->submit_offset + cmd->size);
221 cmd->relocs = VOID2U64(&target_ring->relocs[a]);
222 cmd->nr_relocs = (b > a) ? b - a : 0;
225 DEBUG_MSG("nr_cmds=%u, nr_bos=%u\n", req.nr_cmds, req.nr_bos);
227 ret = drmCommandWriteRead(ring->pipe->dev->fd, DRM_MSM_GEM_SUBMIT,
230 ERROR_MSG("submit failed: %d (%s)", ret, strerror(errno));
232 /* update timestamp on all rings associated with submit: */
233 for (i = 0; i < msm_ring->nr_cmds; i++) {
234 struct fd_ringbuffer *target_ring = msm_ring->rings[i];
236 target_ring->last_timestamp = req.fence;
240 LIST_FOR_EACH_ENTRY_SAFE(msm_bo, tmp, &msm_ring->submit_list, list[id]) {
241 struct list_head *list = &msm_bo->list[id];
243 msm_bo->indexp1[id] = 0;
244 fd_bo_del(&msm_bo->base);
252 static void msm_ringbuffer_reset(struct fd_ringbuffer *ring)
257 static void msm_ringbuffer_emit_reloc(struct fd_ringbuffer *ring,
258 const struct fd_reloc *r)
260 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
261 struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring;
262 struct msm_bo *msm_bo = to_msm_bo(r->bo);
263 struct drm_msm_gem_submit_reloc *reloc;
264 uint32_t idx = APPEND(msm_ring, relocs);
267 reloc = &msm_ring->relocs[idx];
269 reloc->reloc_idx = bo2idx(parent, r->bo, r->flags);
270 reloc->reloc_offset = r->offset;
272 reloc->shift = r->shift;
273 reloc->submit_offset = offset_bytes(ring->cur, ring->start);
275 addr = msm_bo->presumed;
280 (*ring->cur++) = addr | r->or;
283 static void msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring,
284 struct fd_ringmarker *target, struct fd_ringmarker *end)
286 struct fd_bo *target_bo = to_msm_ringbuffer(target->ring)->ring_bo;
287 struct drm_msm_gem_submit_cmd *cmd;
288 uint32_t submit_offset, size;
290 submit_offset = offset_bytes(target->cur, target->ring->start);
291 size = offset_bytes(end->cur, target->cur);
293 cmd = get_cmd(ring, target->ring, target_bo, submit_offset, size,
294 MSM_SUBMIT_CMD_IB_TARGET_BUF);
297 msm_ringbuffer_emit_reloc(ring, &(struct fd_reloc){
299 .flags = FD_RELOC_READ,
300 .offset = submit_offset,
304 static void msm_ringbuffer_destroy(struct fd_ringbuffer *ring)
306 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring);
307 if (msm_ring->ring_bo)
308 fd_bo_del(msm_ring->ring_bo);
312 static struct fd_ringbuffer_funcs funcs = {
313 .hostptr = msm_ringbuffer_hostptr,
314 .flush = msm_ringbuffer_flush,
315 .reset = msm_ringbuffer_reset,
316 .emit_reloc = msm_ringbuffer_emit_reloc,
317 .emit_reloc_ring = msm_ringbuffer_emit_reloc_ring,
318 .destroy = msm_ringbuffer_destroy,
321 struct fd_ringbuffer * msm_ringbuffer_new(struct fd_pipe *pipe,
324 struct msm_ringbuffer *msm_ring;
325 struct fd_ringbuffer *ring = NULL;
327 msm_ring = calloc(1, sizeof(*msm_ring));
329 ERROR_MSG("allocation failed");
333 ring = &msm_ring->base;
334 ring->funcs = &funcs;
336 list_inithead(&msm_ring->submit_list);
338 msm_ring->ring_bo = fd_bo_new(pipe->dev, size, 0);
339 if (!msm_ring->ring_bo) {
340 ERROR_MSG("ringbuffer allocation failed");
347 fd_ringbuffer_del(ring);