diff options
Diffstat (limited to 'src/gallium/drivers/freedreno/drm/freedreno_device.c')
| -rw-r--r-- | src/gallium/drivers/freedreno/drm/freedreno_device.c | 156 |
1 files changed, 156 insertions, 0 deletions
diff --git a/src/gallium/drivers/freedreno/drm/freedreno_device.c b/src/gallium/drivers/freedreno/drm/freedreno_device.c new file mode 100644 index 00000000000..b2f6c981963 --- /dev/null +++ b/src/gallium/drivers/freedreno/drm/freedreno_device.c @@ -0,0 +1,156 @@ +/* + * Copyright (C) 2012-2018 Rob Clark <[email protected]> + * + * 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 <[email protected]> + */ + +#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; +} |