gralloc_drm_pipe.c

   1 /*
   2  * Copyright (C) 2010-2011 Chia-I Wu <olvaffe@gmail.com>
   3  * Copyright (C) 2010-2011 LunarG Inc.
   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 shall be included
  13  * in all copies or substantial portions of the 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
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  21  * DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #define LOG_TAG "GRALLOC-PIPE"
  25
  26 #include <cutils/log.h>
  27 #include <errno.h>
  28
  29 #include <pipe/p_screen.h>
  30 #include <pipe/p_context.h>
  31 #include <state_tracker/drm_driver.h>
  32 #include <util/u_inlines.h>
  33 #include <util/u_memory.h>
  34
  35 #include "gralloc_drm.h"
  36 #include "gralloc_drm_priv.h"
  37
  38 struct pipe_manager {
  39         struct gralloc_drm_drv_t base;
  40
  41         int fd;
  42         char name[16];
  43         pthread_mutex_t mutex;
  44         struct pipe_screen *screen;
  45         struct pipe_context *context;
  46 };
  47
  48 struct pipe_buffer {
  49         struct gralloc_drm_bo_t base;
  50
  51         struct pipe_resource *resource;
  52         struct winsys_handle winsys;
  53
  54         struct pipe_transfer *transfer;
  55 };
  56
  57 static enum pipe_format get_pipe_format(int format)
  58 {
  59         enum pipe_format fmt;
  60
  61         switch (format) {
  62         case HAL_PIXEL_FORMAT_RGBA_8888:
  63                 fmt = PIPE_FORMAT_R8G8B8A8_UNORM;
  64                 break;
  65         case HAL_PIXEL_FORMAT_RGBX_8888:
  66                 fmt = PIPE_FORMAT_R8G8B8X8_UNORM;
  67                 break;
  68         case HAL_PIXEL_FORMAT_RGB_888:
  69                 fmt = PIPE_FORMAT_R8G8B8_UNORM;
  70                 break;
  71         case HAL_PIXEL_FORMAT_RGB_565:
  72                 fmt = PIPE_FORMAT_B5G6R5_UNORM;
  73                 break;
  74         case HAL_PIXEL_FORMAT_BGRA_8888:
  75                 fmt = PIPE_FORMAT_B8G8R8A8_UNORM;
  76                 break;
  77         case HAL_PIXEL_FORMAT_RGBA_5551:
  78         case HAL_PIXEL_FORMAT_RGBA_4444:
  79         default:
  80                 fmt = PIPE_FORMAT_NONE;
  81                 break;
  82         }
  83
  84         return fmt;
  85 }
  86
  87 static unsigned get_pipe_bind(int usage)
  88 {
  89         unsigned bind = PIPE_BIND_SHARED;
  90
  91         if (usage & GRALLOC_USAGE_SW_READ_MASK)
  92                 bind |= PIPE_BIND_TRANSFER_READ;
  93         if (usage & GRALLOC_USAGE_SW_WRITE_MASK)
  94                 bind |= PIPE_BIND_TRANSFER_WRITE;
  95
  96         if (usage & GRALLOC_USAGE_HW_TEXTURE)
  97                 bind |= PIPE_BIND_SAMPLER_VIEW;
  98         if (usage & GRALLOC_USAGE_HW_RENDER)
  99                 bind |= PIPE_BIND_RENDER_TARGET;
 100         if (usage & GRALLOC_USAGE_HW_FB) {
 101                 bind |= PIPE_BIND_RENDER_TARGET;
 102                 bind |= PIPE_BIND_SCANOUT;
 103         }
 104
 105         return bind;
 106 }
 107
 108 static struct pipe_buffer *get_pipe_buffer_locked(struct pipe_manager *pm,
 109                 const struct gralloc_drm_handle_t *handle)
 110 {
 111         struct pipe_buffer *buf;
 112         struct pipe_resource templ;
 113
 114         memset(&templ, 0, sizeof(templ));
 115         templ.format = get_pipe_format(handle->format);
 116         templ.bind = get_pipe_bind(handle->usage);
 117         templ.target = PIPE_TEXTURE_2D;
 118
 119         if (templ.format == PIPE_FORMAT_NONE ||
 120             !pm->screen->is_format_supported(pm->screen, templ.format,
 121                                 templ.target, 0, templ.bind)) {
 122                 LOGE("unsupported format 0x%x", handle->format);
 123                 return NULL;
 124         }
 125
 126         buf = CALLOC(1, sizeof(*buf));
 127         if (!buf) {
 128                 LOGE("failed to allocate pipe buffer");
 129                 return NULL;
 130         }
 131
 132         templ.width0 = handle->width;
 133         templ.height0 = handle->height;
 134         templ.depth0 = 1;
 135
 136         if (handle->name) {
 137                 buf->winsys.type = DRM_API_HANDLE_TYPE_SHARED;
 138                 buf->winsys.handle = handle->name;
 139                 buf->winsys.stride = handle->stride;
 140
 141                 buf->resource = pm->screen->resource_from_handle(pm->screen,
 142                                 &templ, &buf->winsys);
 143                 if (!buf->resource)
 144                         goto fail;
 145         }
 146         else {
 147                 buf->resource =
 148                         pm->screen->resource_create(pm->screen, &templ);
 149                 if (!buf->resource)
 150                         goto fail;
 151
 152                 buf->winsys.type = DRM_API_HANDLE_TYPE_SHARED;
 153                 if (!pm->screen->resource_get_handle(pm->screen,
 154                                         buf->resource, &buf->winsys))
 155                         goto fail;
 156         }
 157
 158         /* need the gem handle for fb */
 159         if (handle->usage & GRALLOC_USAGE_HW_FB) {
 160                 struct winsys_handle tmp;
 161
 162                 memset(&tmp, 0, sizeof(tmp));
 163                 tmp.type = DRM_API_HANDLE_TYPE_KMS;
 164                 if (!pm->screen->resource_get_handle(pm->screen,
 165                                         buf->resource, &tmp))
 166                         goto fail;
 167
 168                 buf->base.fb_handle = tmp.handle;
 169         }
 170
 171         return buf;
 172
 173 fail:
 174         LOGE("failed to allocate pipe buffer");
 175         if (buf->resource)
 176                 pipe_resource_reference(&buf->resource, NULL);
 177         FREE(buf);
 178
 179         return NULL;
 180 }
 181
 182 static struct gralloc_drm_bo_t *pipe_alloc(struct gralloc_drm_drv_t *drv,
 183                 struct gralloc_drm_handle_t *handle)
 184 {
 185         struct pipe_manager *pm = (struct pipe_manager *) drv;
 186         struct pipe_buffer *buf;
 187
 188         pthread_mutex_lock(&pm->mutex);
 189         buf = get_pipe_buffer_locked(pm, handle);
 190         pthread_mutex_unlock(&pm->mutex);
 191
 192         if (buf) {
 193                 handle->name = (int) buf->winsys.handle;
 194                 handle->stride = (int) buf->winsys.stride;
 195
 196                 buf->base.handle = handle;
 197         }
 198
 199         return &buf->base;
 200 }
 201
 202 static void pipe_free(struct gralloc_drm_drv_t *drv, struct gralloc_drm_bo_t *bo)
 203 {
 204         struct pipe_manager *pm = (struct pipe_manager *) drv;
 205         struct pipe_buffer *buf = (struct pipe_buffer *) bo;
 206
 207         pthread_mutex_lock(&pm->mutex);
 208
 209         if (buf->transfer)
 210                 pipe_transfer_destroy(pm->context, buf->transfer);
 211         pipe_resource_reference(&buf->resource, NULL);
 212
 213         pthread_mutex_unlock(&pm->mutex);
 214
 215         FREE(buf);
 216 }
 217
 218 static int pipe_map(struct gralloc_drm_drv_t *drv,
 219                 struct gralloc_drm_bo_t *bo, int x, int y, int w, int h,
 220                 int enable_write, void **addr)
 221 {
 222         struct pipe_manager *pm = (struct pipe_manager *) drv;
 223         struct pipe_buffer *buf = (struct pipe_buffer *) bo;
 224         int err = 0;
 225
 226         pthread_mutex_lock(&pm->mutex);
 227
 228         /* need a context to get transfer */
 229         if (!pm->context) {
 230                 pm->context = pm->screen->context_create(pm->screen, NULL);
 231                 if (!pm->context) {
 232                         LOGE("failed to create pipe context");
 233                         err = -ENOMEM;
 234                 }
 235         }
 236
 237         if (!err) {
 238                 enum pipe_transfer_usage usage;
 239
 240                 usage = PIPE_TRANSFER_READ;
 241                 if (enable_write)
 242                         usage |= PIPE_TRANSFER_WRITE;
 243
 244                 assert(!buf->transfer);
 245
 246                 /*
 247                  * ignore x, y, w and h so that returned addr points at the
 248                  * start of the buffer
 249                  */
 250                 buf->transfer = pipe_get_transfer(pm->context, buf->resource,
 251                                 0, 0, usage, 0, 0,
 252                                 buf->resource->width0, buf->resource->height0);
 253                 if (buf->transfer)
 254                         *addr = pipe_transfer_map(pm->context, buf->transfer);
 255                 else
 256                         err = -ENOMEM;
 257         }
 258
 259         pthread_mutex_unlock(&pm->mutex);
 260
 261         return err;
 262 }
 263
 264 static void pipe_unmap(struct gralloc_drm_drv_t *drv,
 265                 struct gralloc_drm_bo_t *bo)
 266 {
 267         struct pipe_manager *pm = (struct pipe_manager *) drv;
 268         struct pipe_buffer *buf = (struct pipe_buffer *) bo;
 269
 270         pthread_mutex_lock(&pm->mutex);
 271
 272         assert(buf && buf->transfer);
 273
 274         pipe_transfer_unmap(pm->context, buf->transfer);
 275         pipe_transfer_destroy(pm->context, buf->transfer);
 276         buf->transfer = NULL;
 277
 278         pm->context->flush(pm->context, NULL);
 279
 280         pthread_mutex_unlock(&pm->mutex);
 281 }
 282
 283 static void pipe_init_kms_features(struct gralloc_drm_drv_t *drv, struct gralloc_drm_t *drm)
 284 {
 285         struct pipe_manager *pm = (struct pipe_manager *) drv;
 286
 287         drm->mode_dirty_fb = (strcmp(pm->name, "vmwgfx") == 0);
 288         drm->swap_mode = DRM_SWAP_FLIP;
 289         drm->mode_sync_flip = 1;
 290         drm->swap_interval = 1;
 291         drm->vblank_secondary = 0;
 292 }
 293
 294 static void pipe_destroy(struct gralloc_drm_drv_t *drv)
 295 {
 296         struct pipe_manager *pm = (struct pipe_manager *) drv;
 297
 298         if (pm->context)
 299                 pm->context->destroy(pm->context);
 300         pm->screen->destroy(pm->screen);
 301         FREE(pm);
 302 }
 303
 304 /* for nouveau */
 305 #include "nouveau/drm/nouveau_drm_public.h"
 306 /* for debug */
 307 #include "target-helpers/inline_debug_helper.h"
 308
 309 static int pipe_init_screen(struct pipe_manager *pm)
 310 {
 311         struct pipe_screen *screen;
 312         int err = 0;
 313
 314         if (strcmp(pm->name, "nouveau") == 0) {
 315                 screen = nouveau_drm_screen_create(pm->fd);
 316                 if (!screen)
 317                         err = -EINVAL;
 318         }
 319         else {
 320                 LOGW("unknown driver %s", pm->name);
 321                 screen = NULL;
 322                 err = -EINVAL;
 323         }
 324
 325         if (screen)
 326                 screen = debug_screen_wrap(screen);
 327
 328         pm->screen = screen;
 329
 330         return err;
 331 }
 332
 333 struct gralloc_drm_drv_t *gralloc_drm_drv_create_for_pipe(int fd, const char *name)
 334 {
 335         struct pipe_manager *pm;
 336
 337         pm = CALLOC(1, sizeof(*pm));
 338         if (!pm) {
 339                 LOGE("failed to allocate pipe manager for %s", name);
 340                 return NULL;
 341         }
 342
 343         pm->fd = fd;
 344         strncpy(pm->name, name, sizeof(pm->name) - 1);
 345
 346         pthread_mutex_init(&pm->mutex, NULL);
 347
 348         if (pipe_init_screen(pm)) {
 349                 FREE(pm);
 350                 return NULL;
 351         }
 352
 353         pm->base.destroy = pipe_destroy;
 354         pm->base.init_kms_features = pipe_init_kms_features;
 355         pm->base.alloc = pipe_alloc;
 356         pm->base.free = pipe_free;
 357         pm->base.map = pipe_map;
 358         pm->base.unmap = pipe_unmap;
 359
 360         return &pm->base;
 361 }