1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */ 2 3 /* 4 * Copyright (C) 2013 Rob Clark <robclark (at) 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 (at) freedesktop.org> 27 */ 28 29 #ifdef HAVE_CONFIG_H 30 # include <config.h> 31 #endif 32 33 #include <assert.h> 34 #include <inttypes.h> 35 36 #include "freedreno_ringbuffer.h" 37 #include "msm_priv.h" 38 39 struct msm_ringbuffer { 40 struct fd_ringbuffer base; 41 struct fd_bo *ring_bo; 42 43 /* submit ioctl related tables: */ 44 struct { 45 /* bo's table: */ 46 struct drm_msm_gem_submit_bo *bos; 47 uint32_t nr_bos, max_bos; 48 49 /* cmd's table: */ 50 struct drm_msm_gem_submit_cmd *cmds; 51 uint32_t nr_cmds, max_cmds; 52 53 /* reloc's table: */ 54 struct drm_msm_gem_submit_reloc *relocs; 55 uint32_t nr_relocs, max_relocs; 56 } submit; 57 58 /* should have matching entries in submit.bos: */ 59 struct fd_bo **bos; 60 uint32_t nr_bos, max_bos; 61 62 /* should have matching entries in submit.cmds: */ 63 struct fd_ringbuffer **rings; 64 uint32_t nr_rings, max_rings; 65 }; 66 67 static pthread_mutex_t idx_lock = PTHREAD_MUTEX_INITIALIZER; 68 69 static void *grow(void *ptr, uint32_t nr, uint32_t *max, uint32_t sz) 70 { 71 if ((nr + 1) > *max) { 72 if ((*max * 2) < (nr + 1)) 73 *max = nr + 5; 74 else 75 *max = *max * 2; 76 ptr = realloc(ptr, *max * sz); 77 } 78 return ptr; 79 } 80 81 #define APPEND(x, name) ({ \ 82 (x)->name = grow((x)->name, (x)->nr_ ## name, &(x)->max_ ## name, sizeof((x)->name[0])); \ 83 (x)->nr_ ## name ++; \ 84 }) 85 86 static inline struct msm_ringbuffer * to_msm_ringbuffer(struct fd_ringbuffer *x) 87 { 88 return (struct msm_ringbuffer *)x; 89 } 90 91 static uint32_t append_bo(struct fd_ringbuffer *ring, struct fd_bo *bo) 92 { 93 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 94 uint32_t idx; 95 96 idx = APPEND(&msm_ring->submit, bos); 97 idx = APPEND(msm_ring, bos); 98 99 msm_ring->submit.bos[idx].flags = 0; 100 msm_ring->submit.bos[idx].handle = bo->handle; 101 msm_ring->submit.bos[idx].presumed = to_msm_bo(bo)->presumed; 102 103 msm_ring->bos[idx] = fd_bo_ref(bo); 104 105 return idx; 106 } 107 108 /* add (if needed) bo, return idx: */ 109 static uint32_t bo2idx(struct fd_ringbuffer *ring, struct fd_bo *bo, uint32_t flags) 110 { 111 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 112 struct msm_bo *msm_bo = to_msm_bo(bo); 113 uint32_t idx; 114 pthread_mutex_lock(&idx_lock); 115 if (!msm_bo->current_ring) { 116 idx = append_bo(ring, bo); 117 msm_bo->current_ring = ring; 118 msm_bo->idx = idx; 119 } else if (msm_bo->current_ring == ring) { 120 idx = msm_bo->idx; 121 } else { 122 /* slow-path: */ 123 for (idx = 0; idx < msm_ring->nr_bos; idx++) 124 if (msm_ring->bos[idx] == bo) 125 break; 126 if (idx == msm_ring->nr_bos) { 127 /* not found */ 128 idx = append_bo(ring, bo); 129 } 130 } 131 pthread_mutex_unlock(&idx_lock); 132 if (flags & FD_RELOC_READ) 133 msm_ring->submit.bos[idx].flags |= MSM_SUBMIT_BO_READ; 134 if (flags & FD_RELOC_WRITE) 135 msm_ring->submit.bos[idx].flags |= MSM_SUBMIT_BO_WRITE; 136 return idx; 137 } 138 139 static int check_cmd_bo(struct fd_ringbuffer *ring, 140 struct drm_msm_gem_submit_cmd *cmd, struct fd_bo *bo) 141 { 142 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 143 return msm_ring->submit.bos[cmd->submit_idx].handle == bo->handle; 144 } 145 146 static uint32_t offset_bytes(void *end, void *start) 147 { 148 return ((char *)end) - ((char *)start); 149 } 150 151 static struct drm_msm_gem_submit_cmd * get_cmd(struct fd_ringbuffer *ring, 152 struct fd_ringbuffer *target_ring, struct fd_bo *target_bo, 153 uint32_t submit_offset, uint32_t size, uint32_t type) 154 { 155 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 156 struct drm_msm_gem_submit_cmd *cmd = NULL; 157 uint32_t i; 158 159 /* figure out if we already have a cmd buf: */ 160 for (i = 0; i < msm_ring->submit.nr_cmds; i++) { 161 cmd = &msm_ring->submit.cmds[i]; 162 if ((cmd->submit_offset == submit_offset) && 163 (cmd->size == size) && 164 (cmd->type == type) && 165 check_cmd_bo(ring, cmd, target_bo)) 166 break; 167 cmd = NULL; 168 } 169 170 /* create cmd buf if not: */ 171 if (!cmd) { 172 uint32_t idx = APPEND(&msm_ring->submit, cmds); 173 APPEND(msm_ring, rings); 174 msm_ring->rings[idx] = target_ring; 175 cmd = &msm_ring->submit.cmds[idx]; 176 cmd->type = type; 177 cmd->submit_idx = bo2idx(ring, target_bo, FD_RELOC_READ); 178 cmd->submit_offset = submit_offset; 179 cmd->size = size; 180 cmd->pad = 0; 181 } 182 183 return cmd; 184 } 185 186 static void * msm_ringbuffer_hostptr(struct fd_ringbuffer *ring) 187 { 188 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 189 return fd_bo_map(msm_ring->ring_bo); 190 } 191 192 static uint32_t find_next_reloc_idx(struct msm_ringbuffer *msm_ring, 193 uint32_t start, uint32_t offset) 194 { 195 uint32_t i; 196 197 /* a binary search would be more clever.. */ 198 for (i = start; i < msm_ring->submit.nr_relocs; i++) { 199 struct drm_msm_gem_submit_reloc *reloc = &msm_ring->submit.relocs[i]; 200 if (reloc->submit_offset >= offset) 201 return i; 202 } 203 204 return i; 205 } 206 207 static void flush_reset(struct fd_ringbuffer *ring) 208 { 209 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 210 unsigned i; 211 212 /* for each of the cmd buffers, clear their reloc's: */ 213 for (i = 0; i < msm_ring->submit.nr_cmds; i++) { 214 struct msm_ringbuffer *target_ring = to_msm_ringbuffer(msm_ring->rings[i]); 215 target_ring->submit.nr_relocs = 0; 216 } 217 218 msm_ring->submit.nr_relocs = 0; 219 msm_ring->submit.nr_cmds = 0; 220 msm_ring->submit.nr_bos = 0; 221 msm_ring->nr_rings = 0; 222 msm_ring->nr_bos = 0; 223 } 224 225 static int msm_ringbuffer_flush(struct fd_ringbuffer *ring, uint32_t *last_start) 226 { 227 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 228 struct fd_bo *ring_bo = msm_ring->ring_bo; 229 struct drm_msm_gem_submit req = { 230 .pipe = to_msm_pipe(ring->pipe)->pipe, 231 }; 232 uint32_t i, j, submit_offset, size; 233 int ret; 234 235 submit_offset = offset_bytes(last_start, ring->start); 236 size = offset_bytes(ring->cur, last_start); 237 238 get_cmd(ring, ring, ring_bo, submit_offset, size, MSM_SUBMIT_CMD_BUF); 239 240 /* needs to be after get_cmd() as that could create bos/cmds table: */ 241 req.bos = VOID2U64(msm_ring->submit.bos), 242 req.nr_bos = msm_ring->submit.nr_bos; 243 req.cmds = VOID2U64(msm_ring->submit.cmds), 244 req.nr_cmds = msm_ring->submit.nr_cmds; 245 246 /* for each of the cmd's fix up their reloc's: */ 247 for (i = 0; i < msm_ring->submit.nr_cmds; i++) { 248 struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i]; 249 struct msm_ringbuffer *target_ring = to_msm_ringbuffer(msm_ring->rings[i]); 250 uint32_t a = find_next_reloc_idx(target_ring, 0, cmd->submit_offset); 251 uint32_t b = find_next_reloc_idx(target_ring, a, cmd->submit_offset + cmd->size); 252 cmd->relocs = VOID2U64(&target_ring->submit.relocs[a]); 253 cmd->nr_relocs = (b > a) ? b - a : 0; 254 } 255 256 DEBUG_MSG("nr_cmds=%u, nr_bos=%u", req.nr_cmds, req.nr_bos); 257 258 ret = drmCommandWriteRead(ring->pipe->dev->fd, DRM_MSM_GEM_SUBMIT, 259 &req, sizeof(req)); 260 if (ret) { 261 ERROR_MSG("submit failed: %d (%s)", ret, strerror(errno)); 262 ERROR_MSG(" pipe: %u", req.pipe); 263 for (i = 0; i < msm_ring->submit.nr_bos; i++) { 264 struct drm_msm_gem_submit_bo *bo = &msm_ring->submit.bos[i]; 265 ERROR_MSG(" bos[%d]: handle=%u, flags=%x", i, bo->handle, bo->flags); 266 } 267 for (i = 0; i < msm_ring->submit.nr_cmds; i++) { 268 struct drm_msm_gem_submit_cmd *cmd = &msm_ring->submit.cmds[i]; 269 struct drm_msm_gem_submit_reloc *relocs = U642VOID(cmd->relocs); 270 ERROR_MSG(" cmd[%d]: type=%u, submit_idx=%u, submit_offset=%u, size=%u", 271 i, cmd->type, cmd->submit_idx, cmd->submit_offset, cmd->size); 272 for (j = 0; j < cmd->nr_relocs; j++) { 273 struct drm_msm_gem_submit_reloc *r = &relocs[j]; 274 ERROR_MSG(" reloc[%d]: submit_offset=%u, or=%08x, shift=%d, reloc_idx=%u" 275 ", reloc_offset=%"PRIu64, j, r->submit_offset, r->or, r->shift, 276 r->reloc_idx, r->reloc_offset); 277 } 278 } 279 } else { 280 /* update timestamp on all rings associated with submit: */ 281 for (i = 0; i < msm_ring->submit.nr_cmds; i++) { 282 struct fd_ringbuffer *target_ring = msm_ring->rings[i]; 283 if (!ret) 284 target_ring->last_timestamp = req.fence; 285 } 286 } 287 288 for (i = 0; i < msm_ring->nr_bos; i++) { 289 struct msm_bo *msm_bo = to_msm_bo(msm_ring->bos[i]); 290 msm_bo->current_ring = NULL; 291 fd_bo_del(&msm_bo->base); 292 } 293 294 flush_reset(ring); 295 296 return ret; 297 } 298 299 static void msm_ringbuffer_reset(struct fd_ringbuffer *ring) 300 { 301 flush_reset(ring); 302 } 303 304 static void msm_ringbuffer_emit_reloc(struct fd_ringbuffer *ring, 305 const struct fd_reloc *r) 306 { 307 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 308 struct fd_ringbuffer *parent = ring->parent ? ring->parent : ring; 309 struct msm_bo *msm_bo = to_msm_bo(r->bo); 310 struct drm_msm_gem_submit_reloc *reloc; 311 uint32_t idx = APPEND(&msm_ring->submit, relocs); 312 uint32_t addr; 313 314 reloc = &msm_ring->submit.relocs[idx]; 315 316 reloc->reloc_idx = bo2idx(parent, r->bo, r->flags); 317 reloc->reloc_offset = r->offset; 318 reloc->or = r->or; 319 reloc->shift = r->shift; 320 reloc->submit_offset = offset_bytes(ring->cur, ring->start); 321 322 addr = msm_bo->presumed; 323 if (r->shift < 0) 324 addr >>= -r->shift; 325 else 326 addr <<= r->shift; 327 (*ring->cur++) = addr | r->or; 328 } 329 330 static void msm_ringbuffer_emit_reloc_ring(struct fd_ringbuffer *ring, 331 struct fd_ringmarker *target, struct fd_ringmarker *end) 332 { 333 struct fd_bo *target_bo = to_msm_ringbuffer(target->ring)->ring_bo; 334 struct drm_msm_gem_submit_cmd *cmd; 335 uint32_t submit_offset, size; 336 337 submit_offset = offset_bytes(target->cur, target->ring->start); 338 size = offset_bytes(end->cur, target->cur); 339 340 cmd = get_cmd(ring, target->ring, target_bo, submit_offset, size, 341 MSM_SUBMIT_CMD_IB_TARGET_BUF); 342 assert(cmd); 343 344 msm_ringbuffer_emit_reloc(ring, &(struct fd_reloc){ 345 .bo = target_bo, 346 .flags = FD_RELOC_READ, 347 .offset = submit_offset, 348 }); 349 } 350 351 static void msm_ringbuffer_destroy(struct fd_ringbuffer *ring) 352 { 353 struct msm_ringbuffer *msm_ring = to_msm_ringbuffer(ring); 354 if (msm_ring->ring_bo) 355 fd_bo_del(msm_ring->ring_bo); 356 free(msm_ring); 357 } 358 359 static const struct fd_ringbuffer_funcs funcs = { 360 .hostptr = msm_ringbuffer_hostptr, 361 .flush = msm_ringbuffer_flush, 362 .reset = msm_ringbuffer_reset, 363 .emit_reloc = msm_ringbuffer_emit_reloc, 364 .emit_reloc_ring = msm_ringbuffer_emit_reloc_ring, 365 .destroy = msm_ringbuffer_destroy, 366 }; 367 368 drm_private struct fd_ringbuffer * msm_ringbuffer_new(struct fd_pipe *pipe, 369 uint32_t size) 370 { 371 struct msm_ringbuffer *msm_ring; 372 struct fd_ringbuffer *ring = NULL; 373 374 msm_ring = calloc(1, sizeof(*msm_ring)); 375 if (!msm_ring) { 376 ERROR_MSG("allocation failed"); 377 goto fail; 378 } 379 380 ring = &msm_ring->base; 381 ring->funcs = &funcs; 382 383 msm_ring->ring_bo = fd_bo_new(pipe->dev, size, 0); 384 if (!msm_ring->ring_bo) { 385 ERROR_MSG("ringbuffer allocation failed"); 386 goto fail; 387 } 388 389 return ring; 390 fail: 391 if (ring) 392 fd_ringbuffer_del(ring); 393 return NULL; 394 } 395
