src/gallium/drivers/panfrost/pan_drm.c

   1 /*
   2  * © Copyright 2019 Collabora, Ltd.
   3  * Copyright 2019 Alyssa Rosenzweig
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the next
  13  * paragraph) shall be included in all copies or substantial portions of the
  14  * Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  19  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  21  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  22  * SOFTWARE.
  23  *
  24  */
  25
  26 #include <fcntl.h>
  27 #include <xf86drm.h>
  28
  29 #include "drm-uapi/panfrost_drm.h"
  30
  31 #include "util/u_memory.h"
  32 #include "util/os_time.h"
  33 #include "os/os_mman.h"
  34
  35 #include "pan_screen.h"
  36 #include "pan_resource.h"
  37 #include "pan_context.h"
  38 #include "pan_util.h"
  39 #include "pandecode/decode.h"
  40
  41 static void
  42 panfrost_drm_mmap_bo(struct panfrost_screen *screen, struct panfrost_bo *bo)
  43 {
  44         struct drm_panfrost_mmap_bo mmap_bo = { .handle = bo->gem_handle };
  45         int ret;
  46
  47         if (bo->cpu)
  48                 return;
  49
  50         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_MMAP_BO, &mmap_bo);
  51         if (ret) {
  52                 fprintf(stderr, "DRM_IOCTL_PANFROST_MMAP_BO failed: %d\n", ret);
  53                 assert(0);
  54         }
  55
  56         bo->cpu = os_mmap(NULL, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
  57                           screen->fd, mmap_bo.offset);
  58         if (bo->cpu == MAP_FAILED) {
  59                 fprintf(stderr, "mmap failed: %p\n", bo->cpu);
  60                 assert(0);
  61         }
  62
  63         /* Record the mmap if we're tracing */
  64         if (pan_debug & PAN_DBG_TRACE)
  65                 pandecode_inject_mmap(bo->gpu, bo->cpu, bo->size, NULL);
  66 }
  67
  68 static void
  69 panfrost_drm_munmap_bo(struct panfrost_screen *screen, struct panfrost_bo *bo)
  70 {
  71         if (!bo->cpu)
  72                 return;
  73
  74         if (os_munmap((void *) (uintptr_t)bo->cpu, bo->size)) {
  75                 perror("munmap");
  76                 abort();
  77         }
  78
  79         bo->cpu = NULL;
  80 }
  81
  82 struct panfrost_bo *
  83 panfrost_drm_create_bo(struct panfrost_screen *screen, size_t size,
  84                        uint32_t flags)
  85 {
  86         struct panfrost_bo *bo = rzalloc(screen, struct panfrost_bo);
  87         struct drm_panfrost_create_bo create_bo = {
  88                 .size = size,
  89                 .flags = flags,
  90         };
  91         int ret;
  92
  93         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_CREATE_BO, &create_bo);
  94         if (ret) {
  95                 fprintf(stderr, "DRM_IOCTL_PANFROST_CREATE_BO failed: %d\n", ret);
  96                 assert(0);
  97         }
  98
  99         bo->size = create_bo.size;
 100         bo->gpu = create_bo.offset;
 101         bo->gem_handle = create_bo.handle;
 102
 103         // TODO map and unmap on demand?
 104         panfrost_drm_mmap_bo(screen, bo);
 105
 106         pipe_reference_init(&bo->reference, 1);
 107         return bo;
 108 }
 109
 110 void
 111 panfrost_drm_release_bo(struct panfrost_screen *screen, struct panfrost_bo *bo)
 112 {
 113         struct drm_gem_close gem_close = { .handle = bo->gem_handle };
 114         int ret;
 115
 116         if (!bo)
 117                 return;
 118
 119         panfrost_drm_munmap_bo(screen, bo);
 120
 121         ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
 122         if (ret) {
 123                 fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed: %d\n", ret);
 124                 assert(0);
 125         }
 126
 127         ralloc_free(bo);
 128 }
 129
 130 void
 131 panfrost_drm_allocate_slab(struct panfrost_screen *screen,
 132                            struct panfrost_memory *mem,
 133                            size_t pages,
 134                            bool same_va,
 135                            int extra_flags,
 136                            int commit_count,
 137                            int extent)
 138 {
 139         // TODO cache allocations
 140         // TODO properly handle errors
 141         // TODO take into account extra_flags
 142         mem->bo = panfrost_drm_create_bo(screen, pages * 4096, 0);
 143         mem->stack_bottom = 0;
 144 }
 145
 146 void
 147 panfrost_drm_free_slab(struct panfrost_screen *screen, struct panfrost_memory *mem)
 148 {
 149         panfrost_bo_unreference(&screen->base, mem->bo);
 150         mem->bo = NULL;
 151 }
 152
 153 struct panfrost_bo *
 154 panfrost_drm_import_bo(struct panfrost_screen *screen, int fd)
 155 {
 156         struct panfrost_bo *bo = rzalloc(screen, struct panfrost_bo);
 157         struct drm_panfrost_get_bo_offset get_bo_offset = {0,};
 158         int ret;
 159         unsigned gem_handle;
 160
 161         ret = drmPrimeFDToHandle(screen->fd, fd, &gem_handle);
 162         assert(!ret);
 163
 164         get_bo_offset.handle = gem_handle;
 165         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_GET_BO_OFFSET, &get_bo_offset);
 166         assert(!ret);
 167
 168         bo->gem_handle = gem_handle;
 169         bo->gpu = (mali_ptr) get_bo_offset.offset;
 170         bo->size = lseek(fd, 0, SEEK_END);
 171         assert(bo->size > 0);
 172         pipe_reference_init(&bo->reference, 1);
 173
 174         // TODO map and unmap on demand?
 175         panfrost_drm_mmap_bo(screen, bo);
 176         return bo;
 177 }
 178
 179 int
 180 panfrost_drm_export_bo(struct panfrost_screen *screen, const struct panfrost_bo *bo)
 181 {
 182         struct drm_prime_handle args = {
 183                 .handle = bo->gem_handle,
 184                 .flags = DRM_CLOEXEC,
 185         };
 186
 187         int ret = drmIoctl(screen->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
 188         if (ret == -1)
 189                 return -1;
 190
 191         return args.fd;
 192 }
 193
 194 static int
 195 panfrost_drm_submit_job(struct panfrost_context *ctx, u64 job_desc, int reqs, struct pipe_surface *surf)
 196 {
 197         struct pipe_context *gallium = (struct pipe_context *) ctx;
 198         struct panfrost_screen *screen = pan_screen(gallium->screen);
 199         struct drm_panfrost_submit submit = {0,};
 200         int bo_handles[7];
 201
 202         submit.in_syncs = (u64) (uintptr_t) &ctx->out_sync;
 203         submit.in_sync_count = 1;
 204
 205         submit.out_sync = ctx->out_sync;
 206
 207         submit.jc = job_desc;
 208         submit.requirements = reqs;
 209
 210         if (surf) {
 211                 struct panfrost_resource *res = pan_resource(surf->texture);
 212                 assert(res->bo->gem_handle > 0);
 213                 bo_handles[submit.bo_handle_count++] = res->bo->gem_handle;
 214         }
 215
 216         /* TODO: Add here the transient pools */
 217         /* TODO: Add here the BOs listed in the panfrost_job */
 218         bo_handles[submit.bo_handle_count++] = ctx->shaders.bo->gem_handle;
 219         bo_handles[submit.bo_handle_count++] = ctx->scratchpad.bo->gem_handle;
 220         bo_handles[submit.bo_handle_count++] = ctx->tiler_heap.bo->gem_handle;
 221         bo_handles[submit.bo_handle_count++] = ctx->varying_mem.bo->gem_handle;
 222         bo_handles[submit.bo_handle_count++] = ctx->tiler_polygon_list.bo->gem_handle;
 223         submit.bo_handles = (u64) (uintptr_t) bo_handles;
 224
 225         if (drmIoctl(screen->fd, DRM_IOCTL_PANFROST_SUBMIT, &submit)) {
 226                 fprintf(stderr, "Error submitting: %m\n");
 227                 return errno;
 228         }
 229
 230         /* Trace the job if we're doing that */
 231         if (pan_debug & PAN_DBG_TRACE) {
 232                 /* Wait so we can get errors reported back */
 233                 drmSyncobjWait(screen->fd, &ctx->out_sync, 1, INT64_MAX, 0, NULL);
 234                 pandecode_replay_jc(submit.jc, FALSE);
 235         }
 236
 237         return 0;
 238 }
 239
 240 int
 241 panfrost_drm_submit_vs_fs_job(struct panfrost_context *ctx, bool has_draws, bool is_scanout)
 242 {
 243         struct pipe_surface *surf = ctx->pipe_framebuffer.cbufs[0];
 244         int ret;
 245
 246         struct panfrost_job *job = panfrost_get_job_for_fbo(ctx);
 247
 248         if (job->first_job.gpu) {
 249                 ret = panfrost_drm_submit_job(ctx, job->first_job.gpu, 0, NULL);
 250                 assert(!ret);
 251         }
 252
 253         if (job->first_tiler.gpu || job->clear) {
 254                 ret = panfrost_drm_submit_job(ctx, panfrost_fragment_job(ctx, has_draws), PANFROST_JD_REQ_FS, surf);
 255                 assert(!ret);
 256         }
 257
 258         return ret;
 259 }
 260
 261 static struct panfrost_fence *
 262 panfrost_fence_create(struct panfrost_context *ctx)
 263 {
 264         struct pipe_context *gallium = (struct pipe_context *) ctx;
 265         struct panfrost_screen *screen = pan_screen(gallium->screen);
 266         struct panfrost_fence *f = calloc(1, sizeof(*f));
 267         if (!f)
 268                 return NULL;
 269
 270         /* Snapshot the last Panfrost's rendering's out fence.  We'd rather have
 271          * another syncobj instead of a sync file, but this is all we get.
 272          * (HandleToFD/FDToHandle just gives you another syncobj ID for the
 273          * same syncobj).
 274          */
 275         drmSyncobjExportSyncFile(screen->fd, ctx->out_sync, &f->fd);
 276         if (f->fd == -1) {
 277                 fprintf(stderr, "export failed\n");
 278                 free(f);
 279                 return NULL;
 280         }
 281
 282         pipe_reference_init(&f->reference, 1);
 283
 284         return f;
 285 }
 286
 287 void
 288 panfrost_drm_force_flush_fragment(struct panfrost_context *ctx,
 289                                   struct pipe_fence_handle **fence)
 290 {
 291         struct pipe_context *gallium = (struct pipe_context *) ctx;
 292         struct panfrost_screen *screen = pan_screen(gallium->screen);
 293
 294         if (!screen->last_fragment_flushed) {
 295                 drmSyncobjWait(screen->fd, &ctx->out_sync, 1, INT64_MAX, 0, NULL);
 296                 screen->last_fragment_flushed = true;
 297
 298                 /* The job finished up, so we're safe to clean it up now */
 299                 panfrost_free_job(ctx, screen->last_job);
 300         }
 301
 302         if (fence) {
 303                 struct panfrost_fence *f = panfrost_fence_create(ctx);
 304                 gallium->screen->fence_reference(gallium->screen, fence, NULL);
 305                 *fence = (struct pipe_fence_handle *)f;
 306         }
 307 }
 308
 309 unsigned
 310 panfrost_drm_query_gpu_version(struct panfrost_screen *screen)
 311 {
 312         struct drm_panfrost_get_param get_param = {0,};
 313         int ret;
 314
 315         get_param.param = DRM_PANFROST_PARAM_GPU_PROD_ID;
 316         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_GET_PARAM, &get_param);
 317         assert(!ret);
 318
 319         return get_param.value;
 320 }
 321
 322 int
 323 panfrost_drm_init_context(struct panfrost_context *ctx)
 324 {
 325         struct pipe_context *gallium = (struct pipe_context *) ctx;
 326         struct panfrost_screen *screen = pan_screen(gallium->screen);
 327
 328         return drmSyncobjCreate(screen->fd, DRM_SYNCOBJ_CREATE_SIGNALED,
 329                                 &ctx->out_sync);
 330 }
 331
 332 void
 333 panfrost_drm_fence_reference(struct pipe_screen *screen,
 334                          struct pipe_fence_handle **ptr,
 335                          struct pipe_fence_handle *fence)
 336 {
 337         struct panfrost_fence **p = (struct panfrost_fence **)ptr;
 338         struct panfrost_fence *f = (struct panfrost_fence *)fence;
 339         struct panfrost_fence *old = *p;
 340
 341         if (pipe_reference(&(*p)->reference, &f->reference)) {
 342                 close(old->fd);
 343                 free(old);
 344         }
 345         *p = f;
 346 }
 347
 348 boolean
 349 panfrost_drm_fence_finish(struct pipe_screen *pscreen,
 350                       struct pipe_context *ctx,
 351                       struct pipe_fence_handle *fence,
 352                       uint64_t timeout)
 353 {
 354         struct panfrost_screen *screen = pan_screen(pscreen);
 355         struct panfrost_fence *f = (struct panfrost_fence *)fence;
 356         int ret;
 357
 358         unsigned syncobj;
 359         ret = drmSyncobjCreate(screen->fd, 0, &syncobj);
 360         if (ret) {
 361                 fprintf(stderr, "Failed to create syncobj to wait on: %m\n");
 362                 return false;
 363         }
 364
 365         drmSyncobjImportSyncFile(screen->fd, syncobj, f->fd);
 366         if (ret) {
 367                 fprintf(stderr, "Failed to import fence to syncobj: %m\n");
 368                 return false;
 369         }
 370
 371         uint64_t abs_timeout = os_time_get_absolute_timeout(timeout);
 372         if (abs_timeout == OS_TIMEOUT_INFINITE)
 373                 abs_timeout = INT64_MAX;
 374
 375         ret = drmSyncobjWait(screen->fd, &syncobj, 1, abs_timeout, 0, NULL);
 376
 377         drmSyncobjDestroy(screen->fd, syncobj);
 378
 379         return ret >= 0;
 380 }