| /* |
| * Copyright © 2019 Raspberry Pi |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice (including the next |
| * paragraph) shall be included in all copies or substantial portions of the |
| * Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
| * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS |
| * IN THE SOFTWARE. |
| */ |
| |
| #include "v3dv_private.h" |
| |
| #include <errno.h> |
| #include <sys/mman.h> |
| |
| #include "drm-uapi/v3d_drm.h" |
| #include "util/u_memory.h" |
| |
| struct v3dv_bo * |
| v3dv_bo_alloc(struct v3dv_device *device, uint32_t size, const char *name) |
| { |
| struct v3dv_bo *bo = vk_alloc(&device->alloc, sizeof(struct v3dv_bo), 8, |
| VK_SYSTEM_ALLOCATION_SCOPE_DEVICE); |
| if (!bo) |
| return NULL; |
| |
| const uint32_t page_align = 4096; /* Always allocate full pages */ |
| size = align(size, page_align); |
| struct drm_v3d_create_bo create = { |
| .size = size |
| }; |
| |
| int ret = v3dv_ioctl(device->render_fd, DRM_IOCTL_V3D_CREATE_BO, &create); |
| if (ret != 0) { |
| return NULL; |
| } |
| |
| assert(create.offset % page_align == 0); |
| assert((create.offset & 0xffffffff) == create.offset); |
| |
| bo->handle = create.handle; |
| bo->size = size; |
| bo->offset = create.offset; |
| bo->map = NULL; |
| bo->map_size = 0; |
| bo->name = name; |
| |
| return bo; |
| } |
| |
| bool |
| v3dv_bo_free(struct v3dv_device *device, struct v3dv_bo *bo) |
| { |
| assert(bo); |
| |
| if (bo->map) |
| v3dv_bo_unmap(device, bo); |
| |
| struct drm_gem_close c; |
| memset(&c, 0, sizeof(c)); |
| c.handle = bo->handle; |
| int ret = v3dv_ioctl(device->render_fd, DRM_IOCTL_GEM_CLOSE, &c); |
| if (ret != 0) |
| fprintf(stderr, "close object %d: %s\n", bo->handle, strerror(errno)); |
| |
| vk_free(&device->alloc, bo); |
| |
| return ret == 0; |
| } |
| |
| bool |
| v3dv_bo_map_unsynchronized(struct v3dv_device *device, |
| struct v3dv_bo *bo, |
| uint32_t size) |
| { |
| assert(bo != NULL && size <= bo->size); |
| |
| struct drm_v3d_mmap_bo map; |
| memset(&map, 0, sizeof(map)); |
| map.handle = bo->handle; |
| int ret = v3dv_ioctl(device->render_fd, DRM_IOCTL_V3D_MMAP_BO, &map); |
| if (ret != 0) { |
| fprintf(stderr, "map ioctl failure\n"); |
| return false; |
| } |
| |
| bo->map = mmap(NULL, size, PROT_READ | PROT_WRITE, MAP_SHARED, |
| device->render_fd, map.offset); |
| if (bo->map == MAP_FAILED) { |
| fprintf(stderr, "mmap of bo %d (offset 0x%016llx, size %d) failed\n", |
| bo->handle, (long long)map.offset, (uint32_t)bo->size); |
| return false; |
| } |
| VG(VALGRIND_MALLOCLIKE_BLOCK(bo->map, bo->size, 0, false)); |
| |
| bo->map_size = size; |
| |
| return true; |
| } |
| |
| bool |
| v3dv_bo_wait(struct v3dv_device *device, |
| struct v3dv_bo *bo, |
| uint64_t timeout_ns) |
| { |
| struct drm_v3d_wait_bo wait = { |
| .handle = bo->handle, |
| .timeout_ns = timeout_ns, |
| }; |
| return v3dv_ioctl(device->render_fd, DRM_IOCTL_V3D_WAIT_BO, &wait) == 0; |
| } |
| |
| bool |
| v3dv_bo_map(struct v3dv_device *device, struct v3dv_bo *bo, uint32_t size) |
| { |
| assert(bo && size <= bo->size); |
| |
| bool ok = v3dv_bo_map_unsynchronized(device, bo, size); |
| if (!ok) |
| return false; |
| |
| const uint64_t infinite = 0xffffffffffffffffull; |
| ok = v3dv_bo_wait(device, bo, infinite); |
| if (!ok) { |
| fprintf(stderr, "memory wait for map failed\n"); |
| return false; |
| } |
| |
| return true; |
| } |
| |
| void |
| v3dv_bo_unmap(struct v3dv_device *device, struct v3dv_bo *bo) |
| { |
| assert(bo && bo->map && bo->map_size > 0); |
| |
| munmap(bo->map, bo->map_size); |
| VG(VALGRIND_FREELIKE_BLOCK(bo->map, 0)); |
| bo->map = NULL; |
| bo->map_size = 0; |
| } |
| |