src/gallium/drivers/panfrost/pan_drm.c

   1 /*
   2  * © Copyright 2019 Collabora, Ltd.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  20  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  21  * SOFTWARE.
  22  *
  23  */
  24
  25 #include <fcntl.h>
  26 #include <xf86drm.h>
  27
  28 #include "drm-uapi/panfrost_drm.h"
  29
  30 #include "util/u_memory.h"
  31 #include "util/os_time.h"
  32
  33 #include "pan_screen.h"
  34 #include "pan_resource.h"
  35 #include "pan_context.h"
  36 #include "pan_drm.h"
  37 #include "pan_trace.h"
  38
  39 struct panfrost_drm {
  40         struct panfrost_driver base;
  41         int fd;
  42 };
  43
  44 static void
  45 panfrost_drm_allocate_slab(struct panfrost_screen *screen,
  46                            struct panfrost_memory *mem,
  47                            size_t pages,
  48                            bool same_va,
  49                            int extra_flags,
  50                            int commit_count,
  51                            int extent)
  52 {
  53         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
  54         struct drm_panfrost_create_bo create_bo = {
  55                         .size = pages * 4096,
  56                         .flags = 0,  // TODO figure out proper flags..
  57         };
  58         struct drm_panfrost_mmap_bo mmap_bo = {0,};
  59         int ret;
  60
  61         // TODO cache allocations
  62         // TODO properly handle errors
  63         // TODO take into account extra_flags
  64
  65         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_CREATE_BO, &create_bo);
  66         if (ret) {
  67                 fprintf(stderr, "DRM_IOCTL_PANFROST_CREATE_BO failed: %d\n", ret);
  68                 assert(0);
  69         }
  70
  71         mem->gpu = create_bo.offset;
  72         mem->gem_handle = create_bo.handle;
  73         mem->stack_bottom = 0;
  74         mem->size = create_bo.size;
  75
  76         // TODO map and unmap on demand?
  77         mmap_bo.handle = create_bo.handle;
  78         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_MMAP_BO, &mmap_bo);
  79         if (ret) {
  80                 fprintf(stderr, "DRM_IOCTL_PANFROST_MMAP_BO failed: %d\n", ret);
  81                 assert(0);
  82         }
  83
  84         mem->cpu = mmap(NULL, mem->size, PROT_READ | PROT_WRITE, MAP_SHARED,
  85                        drm->fd, mmap_bo.offset);
  86         if (mem->cpu == MAP_FAILED) {
  87                 fprintf(stderr, "mmap failed: %p\n", mem->cpu);
  88                 assert(0);
  89         }
  90
  91         /* Record the mmap if we're tracing */
  92         if (!(extra_flags & PAN_ALLOCATE_GROWABLE))
  93                 pantrace_mmap(mem->gpu, mem->cpu, mem->size, NULL);
  94 }
  95
  96 static void
  97 panfrost_drm_free_slab(struct panfrost_screen *screen, struct panfrost_memory *mem)
  98 {
  99         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 100         struct drm_gem_close gem_close = {
 101                 .handle = mem->gem_handle,
 102         };
 103         int ret;
 104
 105         if (munmap((void *) (uintptr_t) mem->cpu, mem->size)) {
 106                 perror("munmap");
 107                 abort();
 108         }
 109
 110         mem->cpu = NULL;
 111
 112         ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
 113         if (ret) {
 114                 fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed: %d\n", ret);
 115                 assert(0);
 116         }
 117
 118         mem->gem_handle = -1;
 119 }
 120
 121 static struct panfrost_bo *
 122 panfrost_drm_import_bo(struct panfrost_screen *screen, struct winsys_handle *whandle)
 123 {
 124         struct panfrost_bo *bo = CALLOC_STRUCT(panfrost_bo);
 125         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 126         struct drm_panfrost_get_bo_offset get_bo_offset = {0,};
 127         struct drm_panfrost_mmap_bo mmap_bo = {0,};
 128         int ret, size;
 129         unsigned gem_handle;
 130
 131         ret = drmPrimeFDToHandle(drm->fd, whandle->handle, &gem_handle);
 132         assert(!ret);
 133
 134         get_bo_offset.handle = gem_handle;
 135         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_GET_BO_OFFSET, &get_bo_offset);
 136         assert(!ret);
 137
 138         bo->gem_handle = gem_handle;
 139         bo->gpu[0] = (mali_ptr) get_bo_offset.offset;
 140
 141         // TODO map and unmap on demand?
 142         mmap_bo.handle = gem_handle;
 143         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_MMAP_BO, &mmap_bo);
 144         if (ret) {
 145                 fprintf(stderr, "DRM_IOCTL_PANFROST_MMAP_BO failed: %d\n", ret);
 146                 assert(0);
 147         }
 148
 149         size = lseek(whandle->handle, 0, SEEK_END);
 150         assert(size > 0);
 151         bo->cpu[0] = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED,
 152                        drm->fd, mmap_bo.offset);
 153         if (bo->cpu[0] == MAP_FAILED) {
 154                 fprintf(stderr, "mmap failed: %p\n", bo->cpu[0]);
 155                 assert(0);
 156         }
 157
 158         /* Record the mmap if we're tracing */
 159         pantrace_mmap(bo->gpu[0], bo->cpu[0], size, NULL);
 160
 161         return bo;
 162 }
 163
 164 static int
 165 panfrost_drm_export_bo(struct panfrost_screen *screen, int gem_handle, struct winsys_handle *whandle)
 166 {
 167         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 168         struct drm_prime_handle args = {
 169                 .handle = gem_handle,
 170                 .flags = DRM_CLOEXEC,
 171         };
 172
 173         int ret = drmIoctl(drm->fd, DRM_IOCTL_PRIME_HANDLE_TO_FD, &args);
 174         if (ret == -1)
 175                 return FALSE;
 176
 177         whandle->handle = args.fd;
 178
 179         return TRUE;
 180 }
 181
 182 static void
 183 panfrost_drm_free_imported_bo(struct panfrost_screen *screen, struct panfrost_bo *bo)
 184 {
 185         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 186         struct drm_gem_close gem_close = {
 187                 .handle = bo->gem_handle,
 188         };
 189         int ret;
 190
 191         ret = drmIoctl(drm->fd, DRM_IOCTL_GEM_CLOSE, &gem_close);
 192         if (ret) {
 193                 fprintf(stderr, "DRM_IOCTL_GEM_CLOSE failed: %d\n", ret);
 194                 assert(0);
 195         }
 196
 197         bo->gem_handle = -1;
 198         bo->gpu[0] = (mali_ptr)NULL;
 199 }
 200
 201 static int
 202 panfrost_drm_submit_job(struct panfrost_context *ctx, u64 job_desc, int reqs, struct pipe_surface *surf)
 203 {
 204         struct pipe_context *gallium = (struct pipe_context *) ctx;
 205         struct panfrost_screen *screen = pan_screen(gallium->screen);
 206         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 207         struct drm_panfrost_submit submit = {0,};
 208
 209         submit.in_syncs = (u64) (uintptr_t) &ctx->out_sync;
 210         submit.in_sync_count = 1;
 211
 212         submit.out_sync = ctx->out_sync;
 213
 214         submit.jc = job_desc;
 215         submit.requirements = reqs;
 216
 217         if (surf) {
 218                 struct panfrost_resource *res = pan_resource(surf->texture);
 219                 submit.bo_handles = (u64) &res->bo->gem_handle;
 220                 submit.bo_handle_count = 1;
 221         }
 222
 223         /* Dump memory _before_ submitting so we're not corrupted with actual GPU results */
 224         pantrace_dump_memory();
 225
 226         if (drmIoctl(drm->fd, DRM_IOCTL_PANFROST_SUBMIT, &submit)) {
 227                 fprintf(stderr, "Error submitting: %m\n");
 228                 return errno;
 229         }
 230
 231         /* Trace the job if we're doing that and do a memory dump. We may
 232          * want to adjust this logic once we're ready to trace FBOs */
 233         pantrace_submit_job(submit.jc, submit.requirements, FALSE);
 234
 235         return 0;
 236 }
 237
 238 static int
 239 panfrost_drm_submit_vs_fs_job(struct panfrost_context *ctx, bool has_draws, bool is_scanout)
 240 {
 241         struct pipe_surface *surf = ctx->pipe_framebuffer.cbufs[0];
 242         int ret;
 243
 244         if (has_draws) {
 245                 ret = panfrost_drm_submit_job(ctx, ctx->set_value_job, 0, NULL);
 246                 assert(!ret);
 247         }
 248
 249         ret = panfrost_drm_submit_job(ctx, panfrost_fragment_job(ctx), PANFROST_JD_REQ_FS, surf);
 250         assert(!ret);
 251
 252         return 0;
 253 }
 254
 255 static struct panfrost_fence *
 256 panfrost_fence_create(struct panfrost_context *ctx)
 257 {
 258         struct pipe_context *gallium = (struct pipe_context *) ctx;
 259         struct panfrost_screen *screen = pan_screen(gallium->screen);
 260         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 261         struct panfrost_fence *f = calloc(1, sizeof(*f));
 262         if (!f)
 263                 return NULL;
 264
 265         /* Snapshot the last Panfrost's rendering's out fence.  We'd rather have
 266          * another syncobj instead of a sync file, but this is all we get.
 267          * (HandleToFD/FDToHandle just gives you another syncobj ID for the
 268          * same syncobj).
 269          */
 270         drmSyncobjExportSyncFile(drm->fd, ctx->out_sync, &f->fd);
 271         if (f->fd == -1) {
 272                 fprintf(stderr, "export failed\n");
 273                 free(f);
 274                 return NULL;
 275         }
 276
 277         pipe_reference_init(&f->reference, 1);
 278
 279         return f;
 280 }
 281
 282 static void
 283 panfrost_drm_force_flush_fragment(struct panfrost_context *ctx,
 284                                   struct pipe_fence_handle **fence)
 285 {
 286         struct pipe_context *gallium = (struct pipe_context *) ctx;
 287
 288         if (fence) {
 289                 struct panfrost_fence *f = panfrost_fence_create(ctx);
 290                 gallium->screen->fence_reference(gallium->screen, fence, NULL);
 291                 *fence = (struct pipe_fence_handle *)f;
 292         }
 293 }
 294
 295 static void
 296 panfrost_drm_enable_counters(struct panfrost_screen *screen)
 297 {
 298         fprintf(stderr, "unimplemented: %s\n", __func__);
 299 }
 300
 301 static void
 302 panfrost_drm_dump_counters(struct panfrost_screen *screen)
 303 {
 304         fprintf(stderr, "unimplemented: %s\n", __func__);
 305 }
 306
 307 static unsigned
 308 panfrost_drm_query_gpu_version(struct panfrost_screen *screen)
 309 {
 310         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 311         struct drm_panfrost_get_param get_param = {0,};
 312         int ret;
 313
 314         get_param.param = DRM_PANFROST_PARAM_GPU_ID;
 315         ret = drmIoctl(drm->fd, DRM_IOCTL_PANFROST_GET_PARAM, &get_param);
 316         assert(!ret);
 317
 318         return get_param.value;
 319 }
 320
 321 static int
 322 panfrost_drm_init_context(struct panfrost_context *ctx)
 323 {
 324         struct pipe_context *gallium = (struct pipe_context *) ctx;
 325         struct panfrost_screen *screen = pan_screen(gallium->screen);
 326         struct panfrost_drm *drm = (struct panfrost_drm *)screen->driver;
 327
 328         return drmSyncobjCreate(drm->fd, DRM_SYNCOBJ_CREATE_SIGNALED,
 329                                 &ctx->out_sync);
 330 }
 331
 332 static 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 static 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_drm *drm = (struct panfrost_drm *)screen->driver;
 356         struct panfrost_fence *f = (struct panfrost_fence *)fence;
 357         int ret;
 358
 359         unsigned syncobj;
 360         ret = drmSyncobjCreate(drm->fd, 0, &syncobj);
 361         if (ret) {
 362                 fprintf(stderr, "Failed to create syncobj to wait on: %m\n");
 363                 return false;
 364         }
 365
 366         drmSyncobjImportSyncFile(drm->fd, syncobj, f->fd);
 367         if (ret) {
 368                 fprintf(stderr, "Failed to import fence to syncobj: %m\n");
 369                 return false;
 370         }
 371
 372         uint64_t abs_timeout = os_time_get_absolute_timeout(timeout);
 373         if (abs_timeout == OS_TIMEOUT_INFINITE)
 374                 abs_timeout = INT64_MAX;
 375
 376         ret = drmSyncobjWait(drm->fd, &syncobj, 1, abs_timeout, 0, NULL);
 377
 378         drmSyncobjDestroy(drm->fd, syncobj);
 379
 380         return ret >= 0;
 381 }
 382
 383 struct panfrost_driver *
 384 panfrost_create_drm_driver(int fd)
 385 {
 386         struct panfrost_drm *driver = CALLOC_STRUCT(panfrost_drm);
 387
 388         driver->fd = fd;
 389
 390         driver->base.import_bo = panfrost_drm_import_bo;
 391         driver->base.export_bo = panfrost_drm_export_bo;
 392         driver->base.free_imported_bo = panfrost_drm_free_imported_bo;
 393         driver->base.submit_vs_fs_job = panfrost_drm_submit_vs_fs_job;
 394         driver->base.force_flush_fragment = panfrost_drm_force_flush_fragment;
 395         driver->base.allocate_slab = panfrost_drm_allocate_slab;
 396         driver->base.free_slab = panfrost_drm_free_slab;
 397         driver->base.enable_counters = panfrost_drm_enable_counters;
 398         driver->base.query_gpu_version = panfrost_drm_query_gpu_version;
 399         driver->base.init_context = panfrost_drm_init_context;
 400         driver->base.fence_reference = panfrost_drm_fence_reference;
 401         driver->base.fence_finish = panfrost_drm_fence_finish;
 402         driver->base.dump_counters = panfrost_drm_dump_counters;
 403
 404         return &driver->base;
 405 }