108 lines
3.3 KiB
C
108 lines
3.3 KiB
C
/*
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* Copyright © 2018 Broadcom
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <c11/threads.h>
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#include "util/macros.h"
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#include "util/hash_table.h"
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#include "util/vma.h"
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#include <xf86drm.h>
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#ifdef __linux__
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#define DRM_MAJOR 226
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#endif
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typedef int (*ioctl_fn_t)(int fd, unsigned long request, void *arg);
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struct shim_bo;
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struct shim_device {
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/* Mapping from int fd to struct shim_fd *. */
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struct hash_table *fd_map;
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/* Mapping from mmap offset to shim_bo */
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struct hash_table_u64 *offset_map;
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mtx_t mem_lock;
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/* Heap from which shim_bo are allocated */
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struct util_vma_heap mem_heap;
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int mem_fd;
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int (**driver_ioctls)(int fd, unsigned long request, void *arg);
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int driver_ioctl_count;
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void (*driver_bo_free)(struct shim_bo *bo);
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/* Returned by drmGetVersion(). */
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const char *driver_name;
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/* Returned by drmGetBusid(). */
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const char *unique;
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int version_major, version_minor, version_patchlevel;
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int bus_type;
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};
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extern struct shim_device shim_device;
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struct shim_fd {
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int fd;
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int refcount;
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mtx_t handle_lock;
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/* mapping from int gem handle to struct shim_bo *. */
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struct hash_table *handles;
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};
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struct shim_bo {
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uint64_t mem_addr;
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void *map;
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int refcount;
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uint32_t size;
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};
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/* Core support. */
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extern int render_node_minor;
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void drm_shim_device_init(void);
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void drm_shim_override_file(const char *contents,
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const char *path_format, ...) PRINTFLIKE(2, 3);
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void drm_shim_fd_register(int fd, struct shim_fd *shim_fd);
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void drm_shim_fd_unregister(int fd);
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struct shim_fd *drm_shim_fd_lookup(int fd);
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int drm_shim_ioctl(int fd, unsigned long request, void *arg);
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void *drm_shim_mmap(struct shim_fd *shim_fd, size_t length, int prot, int flags,
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int fd, off64_t offset);
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int drm_shim_bo_init(struct shim_bo *bo, size_t size);
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void drm_shim_bo_get(struct shim_bo *bo);
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void drm_shim_bo_put(struct shim_bo *bo);
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struct shim_bo *drm_shim_bo_lookup(struct shim_fd *shim_fd, int handle);
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int drm_shim_bo_get_handle(struct shim_fd *shim_fd, struct shim_bo *bo);
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uint64_t drm_shim_bo_get_mmap_offset(struct shim_fd *shim_fd,
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struct shim_bo *bo);
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/* driver-specific hooks. */
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void drm_shim_driver_init(void);
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extern bool drm_shim_driver_prefers_new_render_node;
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