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/*
* Copyright (C) 2012-2018 Rob Clark <robclark@freedesktop.org>
*
* 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.
*
* Authors:
* Rob Clark <robclark@freedesktop.org>
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include "freedreno_drmif.h"
#include "freedreno_priv.h"
static pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER;
static uint32_t
u32_hash(const void *key)
{
return _mesa_hash_data(key, sizeof(uint32_t));
}
static bool
u32_equals(const void *key1, const void *key2)
{
return *(const uint32_t *)key1 == *(const uint32_t *)key2;
}
struct fd_device * kgsl_device_new(int fd);
struct fd_device * msm_device_new(int fd);
struct fd_device * fd_device_new(int fd)
{
struct fd_device *dev;
drmVersionPtr version;
/* figure out if we are kgsl or msm drm driver: */
version = drmGetVersion(fd);
if (!version) {
ERROR_MSG("cannot get version: %s", strerror(errno));
return NULL;
}
if (!strcmp(version->name, "msm")) {
DEBUG_MSG("msm DRM device");
if (version->version_major != 1) {
ERROR_MSG("unsupported version: %u.%u.%u", version->version_major,
version->version_minor, version->version_patchlevel);
dev = NULL;
goto out;
}
dev = msm_device_new(fd);
dev->version = version->version_minor;
#if HAVE_FREEDRENO_KGSL
} else if (!strcmp(version->name, "kgsl")) {
DEBUG_MSG("kgsl DRM device");
dev = kgsl_device_new(fd);
#endif
} else {
ERROR_MSG("unknown device: %s", version->name);
dev = NULL;
}
out:
drmFreeVersion(version);
if (!dev)
return NULL;
p_atomic_set(&dev->refcnt, 1);
dev->fd = fd;
dev->handle_table = _mesa_hash_table_create(NULL, u32_hash, u32_equals);
dev->name_table = _mesa_hash_table_create(NULL, u32_hash, u32_equals);
fd_bo_cache_init(&dev->bo_cache, FALSE);
fd_bo_cache_init(&dev->ring_cache, TRUE);
return dev;
}
/* like fd_device_new() but creates it's own private dup() of the fd
* which is close()d when the device is finalized.
*/
struct fd_device * fd_device_new_dup(int fd)
{
int dup_fd = dup(fd);
struct fd_device *dev = fd_device_new(dup_fd);
if (dev)
dev->closefd = 1;
else
close(dup_fd);
return dev;
}
struct fd_device * fd_device_ref(struct fd_device *dev)
{
p_atomic_inc(&dev->refcnt);
return dev;
}
static void fd_device_del_impl(struct fd_device *dev)
{
int close_fd = dev->closefd ? dev->fd : -1;
fd_bo_cache_cleanup(&dev->bo_cache, 0);
_mesa_hash_table_destroy(dev->handle_table, NULL);
_mesa_hash_table_destroy(dev->name_table, NULL);
dev->funcs->destroy(dev);
if (close_fd >= 0)
close(close_fd);
}
void fd_device_del_locked(struct fd_device *dev)
{
if (!atomic_dec_and_test(&dev->refcnt))
return;
fd_device_del_impl(dev);
}
void fd_device_del(struct fd_device *dev)
{
if (!atomic_dec_and_test(&dev->refcnt))
return;
pthread_mutex_lock(&table_lock);
fd_device_del_impl(dev);
pthread_mutex_unlock(&table_lock);
}
int fd_device_fd(struct fd_device *dev)
{
return dev->fd;
}
enum fd_version fd_device_version(struct fd_device *dev)
{
return dev->version;
}
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