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/*
* 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;
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