| /* |
| * Copyright © 2018 Broadcom |
| * |
| * 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 <c11/threads.h> |
| |
| #include "util/macros.h" |
| #include "util/hash_table.h" |
| #include "util/vma.h" |
| |
| #include <xf86drm.h> |
| |
| #ifdef __linux__ |
| #define DRM_MAJOR 226 |
| #endif |
| |
| typedef int (*ioctl_fn_t)(int fd, unsigned long request, void *arg); |
| |
| struct shim_bo; |
| |
| struct shim_device { |
| /* Mapping from int fd to struct shim_fd *. */ |
| struct hash_table *fd_map; |
| |
| mtx_t mem_lock; |
| /* Heap from which shim_bo are allocated */ |
| struct util_vma_heap mem_heap; |
| |
| int mem_fd; |
| |
| int (**driver_ioctls)(int fd, unsigned long request, void *arg); |
| int driver_ioctl_count; |
| |
| void (*driver_bo_free)(struct shim_bo *bo); |
| |
| /* Returned by drmGetVersion(). */ |
| const char *driver_name; |
| int version_major, version_minor, version_patchlevel; |
| int bus_type; |
| }; |
| |
| extern struct shim_device shim_device; |
| |
| struct shim_fd { |
| int fd; |
| mtx_t handle_lock; |
| /* mapping from int gem handle to struct shim_bo *. */ |
| struct hash_table *handles; |
| }; |
| |
| struct shim_bo { |
| uint64_t mem_addr; |
| void *map; |
| int refcount; |
| uint32_t size; |
| }; |
| |
| /* Core support. */ |
| extern int render_node_minor; |
| void drm_shim_device_init(void); |
| void drm_shim_override_file(const char *contents, |
| const char *path_format, ...) PRINTFLIKE(2, 3); |
| void drm_shim_fd_register(int fd, struct shim_fd *shim_fd); |
| struct shim_fd *drm_shim_fd_lookup(int fd); |
| int drm_shim_ioctl(int fd, unsigned long request, void *arg); |
| void *drm_shim_mmap(struct shim_fd *shim_fd, size_t length, int prot, int flags, |
| int fd, off_t offset); |
| |
| void drm_shim_bo_init(struct shim_bo *bo, size_t size); |
| void drm_shim_bo_get(struct shim_bo *bo); |
| void drm_shim_bo_put(struct shim_bo *bo); |
| struct shim_bo *drm_shim_bo_lookup(struct shim_fd *shim_fd, int handle); |
| int drm_shim_bo_get_handle(struct shim_fd *shim_fd, struct shim_bo *bo); |
| uint64_t drm_shim_bo_get_mmap_offset(struct shim_fd *shim_fd, |
| struct shim_bo *bo); |
| |
| /* driver-specific hooks. */ |
| void drm_shim_driver_init(void); |
| extern bool drm_shim_driver_prefers_new_render_node; |