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 void
  42 panfrost_drm_allocate_slab(struct panfrost_screen *screen,
  43                            struct panfrost_memory *mem,
  44                            size_t pages,
  45                            bool same_va,
  46                            int extra_flags,
  47                            int commit_count,
  48                            int extent)
  49 {
  50         struct drm_panfrost_create_bo create_bo = {
  51                         .size = pages * 4096,
  52                         .flags = 0,  // TODO figure out proper flags..
  53         };
  54         struct drm_panfrost_mmap_bo mmap_bo = {0,};
  55         int ret;
  56
  57         // TODO cache allocations
  58         // TODO properly handle errors
  59         // TODO take into account extra_flags
  60
  61         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_CREATE_BO, &create_bo);
  62         if (ret) {
  63                 fprintf(stderr, "DRM_IOCTL_PANFROST_CREATE_BO failed: %d\n", ret);
  64                 assert(0);
  65         }
  66
  67         mem->gpu = create_bo.offset;
  68         mem->gem_handle = create_bo.handle;
  69         mem->stack_bottom = 0;
  70         mem->size = create_bo.size;
  71
  72         // TODO map and unmap on demand?
  73         mmap_bo.handle = create_bo.handle;
  74         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_MMAP_BO, &mmap_bo);
  75         if (ret) {
  76                 fprintf(stderr, "DRM_IOCTL_PANFROST_MMAP_BO failed: %d\n", ret);
  77                 assert(0);
  78         }
  79
  80         mem->cpu = os_mmap(NULL, mem->size, PROT_READ | PROT_WRITE, MAP_SHARED,
  81                        screen->fd, mmap_bo.offset);
  82         if (mem->cpu == MAP_FAILED) {
  83                 fprintf(stderr, "mmap failed: %p\n", mem->cpu);
  84                 assert(0);
  85         }
  86
  87         /* Record the mmap if we're tracing */
  88         if (pan_debug & PAN_DBG_TRACE)
  89                 pandecode_inject_mmap(mem->gpu, mem->cpu, mem->size, NULL);
  90 }
  91
  92 void
  93 panfrost_drm_free_slab(struct panfrost_screen *screen, struct panfrost_memory *mem)
  94 {
  95         struct drm_gem_close gem_close = {
  96                 .handle = mem->gem_handle,
  97         };
  98         int ret;
  99
 100         if (os_munmap((void *) (uintptr_t) mem->cpu, mem->size)) {
 101                 perror("munmap");
 102                 abort();
 103         }
 104
 105         mem->cpu = NULL;
 106
 107         ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
 108         if (ret) {
 109                 fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed: %d\n", ret);
 110                 assert(0);
 111         }
 112
 113         mem->gem_handle = -1;
 114 }
 115
 116 struct panfrost_bo *
 117 panfrost_drm_import_bo(struct panfrost_screen *screen, struct winsys_handle *whandle)
 118 {
 119         struct panfrost_bo *bo = rzalloc(screen, struct panfrost_bo);
 120         struct drm_panfrost_get_bo_offset get_bo_offset = {0,};
 121         struct drm_panfrost_mmap_bo mmap_bo = {0,};
 122         int ret;
 123         unsigned gem_handle;
 124
 125         ret = drmPrimeFDToHandle(screen->fd, whandle->handle, &gem_handle);
 126         assert(!ret);
 127
 128         get_bo_offset.handle = gem_handle;
 129         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_GET_BO_OFFSET, &get_bo_offset);
 130         assert(!ret);
 131
 132         bo->gem_handle = gem_handle;
 133         bo->gpu = (mali_ptr) get_bo_offset.offset;
 134         pipe_reference_init(&bo->reference, 1);
 135
 136         // TODO map and unmap on demand?
 137         mmap_bo.handle = gem_handle;
 138         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_MMAP_BO, &mmap_bo);
 139         if (ret) {
 140                 fprintf(stderr, "DRM_IOCTL_PANFROST_MMAP_BO failed: %d\n", ret);
 141                 assert(0);
 142         }
 143
 144         bo->size = lseek(whandle->handle, 0, SEEK_END);
 145         assert(bo->size > 0);
 146         bo->cpu = os_mmap(NULL, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
 147                        screen->fd, mmap_bo.offset);
 148         if (bo->cpu == MAP_FAILED) {
 149                 fprintf(stderr, "mmap failed: %p\n", bo->cpu);
 150                 assert(0);
 151         }
 152
 153         /* Record the mmap if we're tracing */
 154         if (pan_debug & PAN_DBG_TRACE)
 155                 pandecode_inject_mmap(bo->gpu, bo->cpu, bo->size, NULL);
 156
 157         return bo;
 158 }
 159
 160 int
 161 panfrost_drm_export_bo(struct panfrost_screen *screen, int gem_handle, unsigned int stride, struct winsys_handle *whandle)
 162 {
 163         struct drm_prime_handle args = {
 164                 .handle = gem_handle,
 165                 .flags = DRM_CLOEXEC,
 166         };
 167
 168         int ret = drmIoctl(screen->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
 169         if (ret == -1)
 170                 return FALSE;
 171
 172         whandle->handle = args.fd;
 173         whandle->stride = stride;
 174
 175         return TRUE;
 176 }
 177
 178 int
 179 panfrost_drm_submit_job(struct panfrost_context *ctx, u64 job_desc, int reqs, struct pipe_surface *surf)
 180 {
 181         struct pipe_context *gallium = (struct pipe_context *) ctx;
 182         struct panfrost_screen *screen = pan_screen(gallium->screen);
 183         struct drm_panfrost_submit submit = {0,};
 184         int bo_handles[7];
 185
 186         submit.in_syncs = (u64) (uintptr_t) &ctx->out_sync;
 187         submit.in_sync_count = 1;
 188
 189         submit.out_sync = ctx->out_sync;
 190
 191         submit.jc = job_desc;
 192         submit.requirements = reqs;
 193
 194         if (surf) {
 195                 struct panfrost_resource *res = pan_resource(surf->texture);
 196                 assert(res->bo->gem_handle > 0);
 197                 bo_handles[submit.bo_handle_count++] = res->bo->gem_handle;
 198         }
 199
 200         /* TODO: Add here the transient pools */
 201         /* TODO: Add here the BOs listed in the panfrost_job */
 202         bo_handles[submit.bo_handle_count++] = ctx->shaders.gem_handle;
 203         bo_handles[submit.bo_handle_count++] = ctx->scratchpad.gem_handle;
 204         bo_handles[submit.bo_handle_count++] = ctx->tiler_heap.gem_handle;
 205         bo_handles[submit.bo_handle_count++] = ctx->varying_mem.gem_handle;
 206         bo_handles[submit.bo_handle_count++] = ctx->tiler_polygon_list.gem_handle;
 207         submit.bo_handles = (u64) (uintptr_t) bo_handles;
 208
 209         if (drmIoctl(screen->fd, DRM_IOCTL_PANFROST_SUBMIT, &submit)) {
 210                 fprintf(stderr, "Error submitting: %m\n");
 211                 return errno;
 212         }
 213
 214         /* Trace the job if we're doing that */
 215         if (pan_debug & PAN_DBG_TRACE) {
 216                 /* Wait so we can get errors reported back */
 217                 drmSyncobjWait(screen->fd, &ctx->out_sync, 1, INT64_MAX, 0, NULL);
 218                 pandecode_replay_jc(submit.jc, FALSE);
 219         }
 220
 221         return 0;
 222 }
 223
 224 int
 225 panfrost_drm_submit_vs_fs_job(struct panfrost_context *ctx, bool has_draws, bool is_scanout)
 226 {
 227         struct pipe_surface *surf = ctx->pipe_framebuffer.cbufs[0];
 228         int ret;
 229
 230         struct panfrost_job *job = panfrost_get_job_for_fbo(ctx);
 231
 232         if (job->first_job.gpu) {
 233                 ret = panfrost_drm_submit_job(ctx, job->first_job.gpu, 0, NULL);
 234                 assert(!ret);
 235         }
 236
 237         if (job->first_tiler.gpu || job->clear) {
 238                 ret = panfrost_drm_submit_job(ctx, panfrost_fragment_job(ctx, has_draws), PANFROST_JD_REQ_FS, surf);
 239                 assert(!ret);
 240         }
 241
 242         return ret;
 243 }
 244
 245 struct panfrost_fence *
 246 panfrost_fence_create(struct panfrost_context *ctx)
 247 {
 248         struct pipe_context *gallium = (struct pipe_context *) ctx;
 249         struct panfrost_screen *screen = pan_screen(gallium->screen);
 250         struct panfrost_fence *f = calloc(1, sizeof(*f));
 251         if (!f)
 252                 return NULL;
 253
 254         /* Snapshot the last Panfrost's rendering's out fence.  We'd rather have
 255          * another syncobj instead of a sync file, but this is all we get.
 256          * (HandleToFD/FDToHandle just gives you another syncobj ID for the
 257          * same syncobj).
 258          */
 259         drmSyncobjExportSyncFile(screen->fd, ctx->out_sync, &f->fd);
 260         if (f->fd == -1) {
 261                 fprintf(stderr, "export failed\n");
 262                 free(f);
 263                 return NULL;
 264         }
 265
 266         pipe_reference_init(&f->reference, 1);
 267
 268         return f;
 269 }
 270
 271 void
 272 panfrost_drm_force_flush_fragment(struct panfrost_context *ctx,
 273                                   struct pipe_fence_handle **fence)
 274 {
 275         struct pipe_context *gallium = (struct pipe_context *) ctx;
 276         struct panfrost_screen *screen = pan_screen(gallium->screen);
 277
 278         if (!screen->last_fragment_flushed) {
 279                 drmSyncobjWait(screen->fd, &ctx->out_sync, 1, INT64_MAX, 0, NULL);
 280                 screen->last_fragment_flushed = true;
 281
 282                 /* The job finished up, so we're safe to clean it up now */
 283                 panfrost_free_job(ctx, screen->last_job);
 284         }
 285
 286         if (fence) {
 287                 struct panfrost_fence *f = panfrost_fence_create(ctx);
 288                 gallium->screen->fence_reference(gallium->screen, fence, NULL);
 289                 *fence = (struct pipe_fence_handle *)f;
 290         }
 291 }
 292
 293 unsigned
 294 panfrost_drm_query_gpu_version(struct panfrost_screen *screen)
 295 {
 296         struct drm_panfrost_get_param get_param = {0,};
 297         int ret;
 298
 299         get_param.param = DRM_PANFROST_PARAM_GPU_PROD_ID;
 300         ret = drmIoctl(screen->fd, DRM_IOCTL_PANFROST_GET_PARAM, &get_param);
 301         assert(!ret);
 302
 303         return get_param.value;
 304 }
 305
 306 int
 307 panfrost_drm_init_context(struct panfrost_context *ctx)
 308 {
 309         struct pipe_context *gallium = (struct pipe_context *) ctx;
 310         struct panfrost_screen *screen = pan_screen(gallium->screen);
 311
 312         return drmSyncobjCreate(screen->fd, DRM_SYNCOBJ_CREATE_SIGNALED,
 313                                 &ctx->out_sync);
 314 }
 315
 316 void
 317 panfrost_drm_fence_reference(struct pipe_screen *screen,
 318                          struct pipe_fence_handle **ptr,
 319                          struct pipe_fence_handle *fence)
 320 {
 321         struct panfrost_fence **p = (struct panfrost_fence **)ptr;
 322         struct panfrost_fence *f = (struct panfrost_fence *)fence;
 323         struct panfrost_fence *old = *p;
 324
 325         if (pipe_reference(&(*p)->reference, &f->reference)) {
 326                 close(old->fd);
 327                 free(old);
 328         }
 329         *p = f;
 330 }
 331
 332 boolean
 333 panfrost_drm_fence_finish(struct pipe_screen *pscreen,
 334                       struct pipe_context *ctx,
 335                       struct pipe_fence_handle *fence,
 336                       uint64_t timeout)
 337 {
 338         struct panfrost_screen *screen = pan_screen(pscreen);
 339         struct panfrost_fence *f = (struct panfrost_fence *)fence;
 340         int ret;
 341
 342         unsigned syncobj;
 343         ret = drmSyncobjCreate(screen->fd, 0, &syncobj);
 344         if (ret) {
 345                 fprintf(stderr, "Failed to create syncobj to wait on: %m\n");
 346                 return false;
 347         }
 348
 349         drmSyncobjImportSyncFile(screen->fd, syncobj, f->fd);
 350         if (ret) {
 351                 fprintf(stderr, "Failed to import fence to syncobj: %m\n");
 352                 return false;
 353         }
 354
 355         uint64_t abs_timeout = os_time_get_absolute_timeout(timeout);
 356         if (abs_timeout == OS_TIMEOUT_INFINITE)
 357                 abs_timeout = INT64_MAX;
 358
 359         ret = drmSyncobjWait(screen->fd, &syncobj, 1, abs_timeout, 0, NULL);
 360
 361         drmSyncobjDestroy(screen->fd, syncobj);
 362
 363         return ret >= 0;
 364 }