2 * Copyright © 2014 Broadcom
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:
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
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 DEALINGS
29 #include <xf86drmMode.h>
31 #include "util/u_memory.h"
33 #include "vc4_context.h"
34 #include "vc4_screen.h"
37 vc4_bo_alloc(struct vc4_screen *screen, uint32_t size, const char *name)
39 struct vc4_bo *bo = CALLOC_STRUCT(vc4_bo);
43 pipe_reference_init(&bo->reference, 1);
48 #ifndef USE_VC4_SIMULATOR
49 struct drm_mode_create_dumb create;
50 memset(&create, 0, sizeof(create));
54 create.height = (size + 127) / 128;
56 int ret = drmIoctl(screen->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create);
58 errx(1, "create ioctl");
60 bo->handle = create.handle;
61 assert(create.size >= size);
62 #else /* USE_VC4_SIMULATOR */
63 static int next_handle = 0;
64 bo->handle = next_handle++;
66 bo->map = malloc(size);
67 #endif /* USE_VC4_SIMULATOR */
73 vc4_bo_free(struct vc4_bo *bo)
75 #ifndef USE_VC4_SIMULATOR
76 struct vc4_screen *screen = bo->screen;
79 munmap(bo->map, bo->size);
81 struct drm_gem_close c;
82 c.handle = bo->handle;
83 int ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_CLOSE, &c);
85 fprintf(stderr, "close object %d: %s\n", bo->handle, strerror(errno));
94 vc4_bo_open_name(struct vc4_screen *screen, uint32_t name,
95 uint32_t winsys_stride)
97 struct vc4_bo *bo = CALLOC_STRUCT(vc4_bo);
99 struct drm_gem_open o;
101 int ret = drmIoctl(screen->fd, DRM_IOCTL_GEM_OPEN, &o);
103 fprintf(stderr, "Failed to open bo %d: %s\n",
104 name, strerror(errno));
109 pipe_reference_init(&bo->reference, 1);
111 bo->handle = o.handle;
114 #ifdef USE_VC4_SIMULATOR
116 bo->simulator_winsys_map = bo->map;
117 bo->simulator_winsys_stride = winsys_stride;
118 bo->map = malloc(bo->size);
125 vc4_bo_alloc_mem(struct vc4_screen *screen, const void *data, uint32_t size,
131 bo = vc4_bo_alloc(screen, size, name);
132 map = vc4_bo_map(bo);
133 memcpy(map, data, size);
138 vc4_bo_flink(struct vc4_bo *bo, uint32_t *name)
140 #ifndef USE_VC4_SIMULATOR
141 struct drm_gem_flink flink = {
142 .handle = bo->handle,
144 int ret = drmIoctl(bo->screen->fd, DRM_IOCTL_GEM_FLINK, &flink);
146 fprintf(stderr, "Failed to flink bo %d: %s\n",
147 bo->handle, strerror(errno));
153 #endif /* USE_VC4_SIMULATOR */
159 vc4_bo_map(struct vc4_bo *bo)
166 struct drm_mode_map_dumb map;
167 memset(&map, 0, sizeof(map));
168 map.handle = bo->handle;
169 ret = drmIoctl(bo->screen->fd, DRM_IOCTL_MODE_MAP_DUMB, &map);
171 errx(1, "map ioctl");
173 bo->map = mmap(NULL, bo->size, PROT_READ | PROT_WRITE, MAP_SHARED,
174 bo->screen->fd, map.offset);
175 if (bo->map == MAP_FAILED) {
176 errx(1, "mmap of bo %d (offset 0x%016llx, size %d) failed\n",
177 bo->handle, (long long)map.offset, bo->size);