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_drm.h"
  39 #include "pan_trace.h"
  40
  41 struct panfrost_drm {
  42         struct panfrost_driver base;
  43         int fd;
  44 };
  45
  46 static void
  47 panfrost_drm_allocate_slab(struct panfrost_screen *screen,
  48                            struct panfrost_memory *mem,
  49                            size_t pages,
  50                            bool same_va,
  51                            int extra_flags,
  52                            int commit_count,
  53                            int extent)
  54 {
  55         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
  56         struct drm_panfrost_create_bo create_bo = {
  57                         .size = pages * 4096,
  58                         .flags = 0,  // TODO figure out proper flags..
  59         };
  60         struct drm_panfrost_mmap_bo mmap_bo = {0,};
  61         int ret;
  62
  63         // TODO cache allocations
  64         // TODO properly handle errors
  65         // TODO take into account extra_flags
  66
  67         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_CREATE_BO, &create_bo);
  68         if (ret) {
  69                 fprintf(stderr, "DRM_IOCTL_PANFROST_CREATE_BO failed: %d\n", ret);
  70                 assert(0);
  71         }
  72
  73         mem->gpu = create_bo.offset;
  74         mem->gem_handle = create_bo.handle;
  75         mem->stack_bottom = 0;
  76         mem->size = create_bo.size;
  77
  78         // TODO map and unmap on demand?
  79         mmap_bo.handle = create_bo.handle;
  80         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_MMAP_BO, &mmap_bo);
  81         if (ret) {
  82                 fprintf(stderr, "DRM_IOCTL_PANFROST_MMAP_BO failed: %d\n", ret);
  83                 assert(0);
  84         }
  85
  86         mem->cpu = os_mmap(NULL, mem->size, PROT_READ | PROT_WRITE, MAP_SHARED,
  87                        drm->fd, mmap_bo.offset);
  88         if (mem->cpu == MAP_FAILED) {
  89                 fprintf(stderr, "mmap failed: %p\n", mem->cpu);
  90                 assert(0);
  91         }
  92
  93         /* Record the mmap if we're tracing */
  94         if (!(extra_flags & PAN_ALLOCATE_GROWABLE))
  95                 pantrace_mmap(mem->gpu, mem->cpu, mem->size, NULL);
  96 }
  97
  98 static void
  99 panfrost_drm_free_slab(struct panfrost_screen *screen, struct panfrost_memory *mem)
 100 {
 101         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 102         struct drm_gem_close gem_close = {
 103                 .handle = mem->gem_handle,
 104         };
 105         int ret;
 106
 107         if (os_munmap((void *) (uintptr_t) mem->cpu, mem->size)) {
 108                 perror("munmap");
 109                 abort();
 110         }
 111
 112         mem->cpu = NULL;
 113
 114         ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
 115         if (ret) {
 116                 fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed: %d\n", ret);
 117                 assert(0);
 118         }
 119
 120         mem->gem_handle = -1;
 121 }
 122
 123 static struct panfrost_bo *
 124 panfrost_drm_import_bo(struct panfrost_screen *screen, struct winsys_handle *whandle)
 125 {
 126         struct panfrost_bo *bo = CALLOC_STRUCT(panfrost_bo);
 127         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 128         struct drm_panfrost_get_bo_offset get_bo_offset = {0,};
 129         struct drm_panfrost_mmap_bo mmap_bo = {0,};
 130         int ret;
 131         unsigned gem_handle;
 132
 133         ret = drmPrimeFDToHandle(drm->fd, whandle->handle, &gem_handle);
 134         assert(!ret);
 135
 136         get_bo_offset.handle = gem_handle;
 137         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_GET_BO_OFFSET, &get_bo_offset);
 138         assert(!ret);
 139
 140         bo->gem_handle = gem_handle;
 141         bo->gpu = (mali_ptr) get_bo_offset.offset;
 142         pipe_reference_init(&bo->reference, 1);
 143
 144         // TODO map and unmap on demand?
 145         mmap_bo.handle = gem_handle;
 146         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_MMAP_BO, &mmap_bo);
 147         if (ret) {
 148                 fprintf(stderr, "DRM_IOCTL_PANFROST_MMAP_BO failed: %d\n", ret);
 149                 assert(0);
 150         }
 151
 152         bo->size = lseek(whandle->handle, 0, SEEK_END);
 153         assert(bo->size > 0);
 154         bo->cpu = os_mmap(NULL, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
 155                        drm->fd, mmap_bo.offset);
 156         if (bo->cpu == MAP_FAILED) {
 157                 fprintf(stderr, "mmap failed: %p\n", bo->cpu);
 158                 assert(0);
 159         }
 160
 161         /* Record the mmap if we're tracing */
 162         pantrace_mmap(bo->gpu, bo->cpu, bo->size, NULL);
 163
 164         return bo;
 165 }
 166
 167 static int
 168 panfrost_drm_export_bo(struct panfrost_screen *screen, int gem_handle, unsigned int stride, struct winsys_handle *whandle)
 169 {
 170         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 171         struct drm_prime_handle args = {
 172                 .handle = gem_handle,
 173                 .flags = DRM_CLOEXEC,
 174         };
 175
 176         int ret = drmIoctl(drm->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
 177         if (ret == -1)
 178                 return FALSE;
 179
 180         whandle->handle = args.fd;
 181         whandle->stride = stride;
 182
 183         return TRUE;
 184 }
 185
 186 static void
 187 panfrost_drm_free_imported_bo(struct panfrost_screen *screen, struct panfrost_bo *bo)
 188 {
 189         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 190         struct drm_gem_close gem_close = {
 191                 .handle = bo->gem_handle,
 192         };
 193         int ret;
 194
 195         ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
 196         if (ret) {
 197                 fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed: %d\n", ret);
 198                 assert(0);
 199         }
 200
 201         bo->gem_handle = -1;
 202         bo->gpu = (mali_ptr)NULL;
 203 }
 204
 205 static int
 206 panfrost_drm_submit_job(struct panfrost_context *ctx, u64 job_desc, int reqs, struct pipe_surface *surf)
 207 {
 208         struct pipe_context *gallium = (struct pipe_context *) ctx;
 209         struct panfrost_screen *screen = pan_screen(gallium->screen);
 210         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 211         struct drm_panfrost_submit submit = {0,};
 212         int bo_handles[7];
 213
 214         submit.in_syncs = (u64) (uintptr_t) &ctx->out_sync;
 215         submit.in_sync_count = 1;
 216
 217         submit.out_sync = ctx->out_sync;
 218
 219         submit.jc = job_desc;
 220         submit.requirements = reqs;
 221
 222         if (surf) {
 223                 struct panfrost_resource *res = pan_resource(surf->texture);
 224                 assert(res->bo->gem_handle > 0);
 225                 bo_handles[submit.bo_handle_count++] = res->bo->gem_handle;
 226
 227                 if (res->bo->checksum_slab.gem_handle)
 228                         bo_handles[submit.bo_handle_count++] = res->bo->checksum_slab.gem_handle;
 229         }
 230
 231         /* TODO: Add here the transient pools */
 232         /* TODO: Add here the BOs listed in the panfrost_job */
 233         bo_handles[submit.bo_handle_count++] = ctx->shaders.gem_handle;
 234         bo_handles[submit.bo_handle_count++] = ctx->scratchpad.gem_handle;
 235         bo_handles[submit.bo_handle_count++] = ctx->tiler_heap.gem_handle;
 236         bo_handles[submit.bo_handle_count++] = ctx->varying_mem.gem_handle;
 237         bo_handles[submit.bo_handle_count++] = ctx->misc_0.gem_handle;
 238         submit.bo_handles = (u64) (uintptr_t) bo_handles;
 239
 240         /* Dump memory _before_ submitting so we're not corrupted with actual GPU results */
 241         pantrace_dump_memory();
 242
 243         if (drmIoctl(drm->fd, DRM_IOCTL_PANFROST_SUBMIT, &submit)) {
 244                 fprintf(stderr, "Error submitting: %m\n");
 245                 return errno;
 246         }
 247
 248         /* Trace the job if we're doing that and do a memory dump. We may
 249          * want to adjust this logic once we're ready to trace FBOs */
 250         pantrace_submit_job(submit.jc, submit.requirements, FALSE);
 251
 252         return 0;
 253 }
 254
 255 static int
 256 panfrost_drm_submit_vs_fs_job(struct panfrost_context *ctx, bool has_draws, bool is_scanout)
 257 {
 258         struct pipe_surface *surf = ctx->pipe_framebuffer.cbufs[0];
 259         int ret;
 260
 261         if (has_draws) {
 262                 ret = panfrost_drm_submit_job(ctx, ctx->set_value_job, 0, NULL);
 263                 assert(!ret);
 264         }
 265
 266         ret = panfrost_drm_submit_job(ctx, panfrost_fragment_job(ctx), PANFROST_JD_REQ_FS, surf);
 267
 268         return ret;
 269 }
 270
 271 static struct panfrost_fence *
 272 panfrost_fence_create(struct panfrost_context *ctx)
 273 {
 274         struct pipe_context *gallium = (struct pipe_context *) ctx;
 275         struct panfrost_screen *screen = pan_screen(gallium->screen);
 276         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 277         struct panfrost_fence *f = calloc(1, sizeof(*f));
 278         if (!f)
 279                 return NULL;
 280
 281         /* Snapshot the last Panfrost's rendering's out fence.  We'd rather have
 282          * another syncobj instead of a sync file, but this is all we get.
 283          * (HandleToFD/FDToHandle just gives you another syncobj ID for the
 284          * same syncobj).
 285          */
 286         drmSyncobjExportSyncFile(drm->fd, ctx->out_sync, &f->fd);
 287         if (f->fd == -1) {
 288                 fprintf(stderr, "export failed\n");
 289                 free(f);
 290                 return NULL;
 291         }
 292
 293         pipe_reference_init(&f->reference, 1);
 294
 295         return f;
 296 }
 297
 298 static void
 299 panfrost_drm_force_flush_fragment(struct panfrost_context *ctx,
 300                                   struct pipe_fence_handle **fence)
 301 {
 302         struct pipe_context *gallium = (struct pipe_context *) ctx;
 303         struct panfrost_screen *screen = pan_screen(gallium->screen);
 304         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 305
 306         if (!screen->last_fragment_flushed) {
 307                 drmSyncobjWait(drm->fd, &ctx->out_sync, 1, INT64_MAX, 0, NULL);
 308                 screen->last_fragment_flushed = true;
 309
 310                 /* The job finished up, so we're safe to clean it up now */
 311                 panfrost_free_job(ctx, screen->last_job);
 312         }
 313
 314         if (fence) {
 315                 struct panfrost_fence *f = panfrost_fence_create(ctx);
 316                 gallium->screen->fence_reference(gallium->screen, fence, NULL);
 317                 *fence = (struct pipe_fence_handle *)f;
 318         }
 319 }
 320
 321 static void
 322 panfrost_drm_enable_counters(struct panfrost_screen *screen)
 323 {
 324         fprintf(stderr, "unimplemented: %s\n", __func__);
 325 }
 326
 327 static void
 328 panfrost_drm_dump_counters(struct panfrost_screen *screen)
 329 {
 330         fprintf(stderr, "unimplemented: %s\n", __func__);
 331 }
 332
 333 static unsigned
 334 panfrost_drm_query_gpu_version(struct panfrost_screen *screen)
 335 {
 336         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 337         struct drm_panfrost_get_param get_param = {0,};
 338         int ret;
 339
 340         get_param.param = DRM_PANFROST_PARAM_GPU_ID;
 341         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_GET_PARAM, &get_param);
 342         assert(!ret);
 343
 344         return get_param.value;
 345 }
 346
 347 static int
 348 panfrost_drm_init_context(struct panfrost_context *ctx)
 349 {
 350         struct pipe_context *gallium = (struct pipe_context *) ctx;
 351         struct panfrost_screen *screen = pan_screen(gallium->screen);
 352         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 353
 354         return drmSyncobjCreate(drm->fd, DRM_SYNCOBJ_CREATE_SIGNALED,
 355                                 &ctx->out_sync);
 356 }
 357
 358 static void
 359 panfrost_drm_fence_reference(struct pipe_screen *screen,
 360                          struct pipe_fence_handle **ptr,
 361                          struct pipe_fence_handle *fence)
 362 {
 363         struct panfrost_fence **p = (struct panfrost_fence **)ptr;
 364         struct panfrost_fence *f = (struct panfrost_fence *)fence;
 365         struct panfrost_fence *old = *p;
 366
 367         if (pipe_reference(&(*p)->reference, &f->reference)) {
 368                 close(old->fd);
 369                 free(old);
 370         }
 371         *p = f;
 372 }
 373
 374 static boolean
 375 panfrost_drm_fence_finish(struct pipe_screen *pscreen,
 376                       struct pipe_context *ctx,
 377                       struct pipe_fence_handle *fence,
 378                       uint64_t timeout)
 379 {
 380         struct panfrost_screen *screen = pan_screen(pscreen);
 381         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 382         struct panfrost_fence *f = (struct panfrost_fence *)fence;
 383         int ret;
 384
 385         unsigned syncobj;
 386         ret = drmSyncobjCreate(drm->fd, 0, &syncobj);
 387         if (ret) {
 388                 fprintf(stderr, "Failed to create syncobj to wait on: %m\n");
 389                 return false;
 390         }
 391
 392         drmSyncobjImportSyncFile(drm->fd, syncobj, f->fd);
 393         if (ret) {
 394                 fprintf(stderr, "Failed to import fence to syncobj: %m\n");
 395                 return false;
 396         }
 397
 398         uint64_t abs_timeout = os_time_get_absolute_timeout(timeout);
 399         if (abs_timeout == OS_TIMEOUT_INFINITE)
 400                 abs_timeout = INT64_MAX;
 401
 402         ret = drmSyncobjWait(drm->fd, &syncobj, 1, abs_timeout, 0, NULL);
 403
 404         drmSyncobjDestroy(drm->fd, syncobj);
 405
 406         return ret >= 0;
 407 }
 408
 409 struct panfrost_driver *
 410 panfrost_create_drm_driver(int fd)
 411 {
 412         struct panfrost_drm *driver = CALLOC_STRUCT(panfrost_drm);
 413
 414         driver->fd = fd;
 415
 416         driver->base.import_bo = panfrost_drm_import_bo;
 417         driver->base.export_bo = panfrost_drm_export_bo;
 418         driver->base.free_imported_bo = panfrost_drm_free_imported_bo;
 419         driver->base.submit_vs_fs_job = panfrost_drm_submit_vs_fs_job;
 420         driver->base.force_flush_fragment = panfrost_drm_force_flush_fragment;
 421         driver->base.allocate_slab = panfrost_drm_allocate_slab;
 422         driver->base.free_slab = panfrost_drm_free_slab;
 423         driver->base.enable_counters = panfrost_drm_enable_counters;
 424         driver->base.query_gpu_version = panfrost_drm_query_gpu_version;
 425         driver->base.init_context = panfrost_drm_init_context;
 426         driver->base.fence_reference = panfrost_drm_fence_reference;
 427         driver->base.fence_finish = panfrost_drm_fence_finish;
 428         driver->base.dump_counters = panfrost_drm_dump_counters;
 429
 430         return &driver->base;
 431 }