diff options
author | Guido Günther <[email protected]> | 2019-05-31 14:35:06 +0200 |
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committer | Guido Günther <[email protected]> | 2019-06-05 08:58:05 +0000 |
commit | 58eec3808eea94b78a3cdb65ad57ff3a94b51556 (patch) | |
tree | 827cec373ed69732a86a5f7e7a49358438ad840a /src/etnaviv/drm/etnaviv_bo.c | |
parent | 3835e21369d2b322d170d997be35c1dbf87bb24f (diff) |
etnaviv: Add libdrm code as of 922d92994267743266024ecceb734ce0ebbca808
Signed-off-by: Guido Günther <[email protected]>
Reviewed-by: Christian Gmeiner <[email protected]>
Diffstat (limited to 'src/etnaviv/drm/etnaviv_bo.c')
-rw-r--r-- | src/etnaviv/drm/etnaviv_bo.c | 349 |
1 files changed, 349 insertions, 0 deletions
diff --git a/src/etnaviv/drm/etnaviv_bo.c b/src/etnaviv/drm/etnaviv_bo.c new file mode 100644 index 00000000000..43ce6b4e3c9 --- /dev/null +++ b/src/etnaviv/drm/etnaviv_bo.c @@ -0,0 +1,349 @@ +/* + * Copyright (C) 2014 Etnaviv Project + * + * 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: + * Christian Gmeiner <[email protected]> + */ + +#include "etnaviv_priv.h" +#include "etnaviv_drmif.h" + +drm_private pthread_mutex_t table_lock = PTHREAD_MUTEX_INITIALIZER; +drm_private void bo_del(struct etna_bo *bo); + +/* set buffer name, and add to table, call w/ table_lock held: */ +static void set_name(struct etna_bo *bo, uint32_t name) +{ + bo->name = name; + /* add ourself into the name table: */ + drmHashInsert(bo->dev->name_table, name, bo); +} + +/* Called under table_lock */ +drm_private void bo_del(struct etna_bo *bo) +{ + if (bo->map) + drm_munmap(bo->map, bo->size); + + if (bo->name) + drmHashDelete(bo->dev->name_table, bo->name); + + if (bo->handle) { + struct drm_gem_close req = { + .handle = bo->handle, + }; + + drmHashDelete(bo->dev->handle_table, bo->handle); + drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_CLOSE, &req); + } + + free(bo); +} + +/* lookup a buffer from it's handle, call w/ table_lock held: */ +static struct etna_bo *lookup_bo(void *tbl, uint32_t handle) +{ + struct etna_bo *bo = NULL; + + if (!drmHashLookup(tbl, handle, (void **)&bo)) { + /* found, incr refcnt and return: */ + bo = etna_bo_ref(bo); + + /* don't break the bucket if this bo was found in one */ + list_delinit(&bo->list); + } + + return bo; +} + +/* allocate a new buffer object, call w/ table_lock held */ +static struct etna_bo *bo_from_handle(struct etna_device *dev, + uint32_t size, uint32_t handle, uint32_t flags) +{ + struct etna_bo *bo = calloc(sizeof(*bo), 1); + + if (!bo) { + struct drm_gem_close req = { + .handle = handle, + }; + + drmIoctl(dev->fd, DRM_IOCTL_GEM_CLOSE, &req); + + return NULL; + } + + bo->dev = etna_device_ref(dev); + bo->size = size; + bo->handle = handle; + bo->flags = flags; + atomic_set(&bo->refcnt, 1); + list_inithead(&bo->list); + /* add ourselves to the handle table: */ + drmHashInsert(dev->handle_table, handle, bo); + + return bo; +} + +/* allocate a new (un-tiled) buffer object */ +drm_public struct etna_bo *etna_bo_new(struct etna_device *dev, uint32_t size, + uint32_t flags) +{ + struct etna_bo *bo; + int ret; + struct drm_etnaviv_gem_new req = { + .flags = flags, + }; + + bo = etna_bo_cache_alloc(&dev->bo_cache, &size, flags); + if (bo) + return bo; + + req.size = size; + ret = drmCommandWriteRead(dev->fd, DRM_ETNAVIV_GEM_NEW, + &req, sizeof(req)); + if (ret) + return NULL; + + pthread_mutex_lock(&table_lock); + bo = bo_from_handle(dev, size, req.handle, flags); + bo->reuse = 1; + pthread_mutex_unlock(&table_lock); + + return bo; +} + +drm_public struct etna_bo *etna_bo_ref(struct etna_bo *bo) +{ + atomic_inc(&bo->refcnt); + + return bo; +} + +/* get buffer info */ +static int get_buffer_info(struct etna_bo *bo) +{ + int ret; + struct drm_etnaviv_gem_info req = { + .handle = bo->handle, + }; + + ret = drmCommandWriteRead(bo->dev->fd, DRM_ETNAVIV_GEM_INFO, + &req, sizeof(req)); + if (ret) { + return ret; + } + + /* really all we need for now is mmap offset */ + bo->offset = req.offset; + + return 0; +} + +/* import a buffer object from DRI2 name */ +drm_public struct etna_bo *etna_bo_from_name(struct etna_device *dev, + uint32_t name) +{ + struct etna_bo *bo; + struct drm_gem_open req = { + .name = name, + }; + + pthread_mutex_lock(&table_lock); + + /* check name table first, to see if bo is already open: */ + bo = lookup_bo(dev->name_table, name); + if (bo) + goto out_unlock; + + if (drmIoctl(dev->fd, DRM_IOCTL_GEM_OPEN, &req)) { + ERROR_MSG("gem-open failed: %s", strerror(errno)); + goto out_unlock; + } + + bo = lookup_bo(dev->handle_table, req.handle); + if (bo) + goto out_unlock; + + bo = bo_from_handle(dev, req.size, req.handle, 0); + if (bo) + set_name(bo, name); + +out_unlock: + pthread_mutex_unlock(&table_lock); + + return bo; +} + +/* import a buffer from dmabuf fd, does not take ownership of the + * fd so caller should close() the fd when it is otherwise done + * with it (even if it is still using the 'struct etna_bo *') + */ +drm_public struct etna_bo *etna_bo_from_dmabuf(struct etna_device *dev, int fd) +{ + struct etna_bo *bo; + int ret, size; + uint32_t handle; + + /* take the lock before calling drmPrimeFDToHandle to avoid + * racing against etna_bo_del, which might invalidate the + * returned handle. + */ + pthread_mutex_lock(&table_lock); + + ret = drmPrimeFDToHandle(dev->fd, fd, &handle); + if (ret) { + pthread_mutex_unlock(&table_lock); + return NULL; + } + + bo = lookup_bo(dev->handle_table, handle); + if (bo) + goto out_unlock; + + /* lseek() to get bo size */ + size = lseek(fd, 0, SEEK_END); + lseek(fd, 0, SEEK_CUR); + + bo = bo_from_handle(dev, size, handle, 0); + +out_unlock: + pthread_mutex_unlock(&table_lock); + + return bo; +} + +/* destroy a buffer object */ +drm_public void etna_bo_del(struct etna_bo *bo) +{ + struct etna_device *dev = bo->dev; + + if (!bo) + return; + + if (!atomic_dec_and_test(&bo->refcnt)) + return; + + pthread_mutex_lock(&table_lock); + + if (bo->reuse && (etna_bo_cache_free(&dev->bo_cache, bo) == 0)) + goto out; + + bo_del(bo); + etna_device_del_locked(dev); +out: + pthread_mutex_unlock(&table_lock); +} + +/* get the global flink/DRI2 buffer name */ +drm_public int etna_bo_get_name(struct etna_bo *bo, uint32_t *name) +{ + if (!bo->name) { + struct drm_gem_flink req = { + .handle = bo->handle, + }; + int ret; + + ret = drmIoctl(bo->dev->fd, DRM_IOCTL_GEM_FLINK, &req); + if (ret) { + return ret; + } + + pthread_mutex_lock(&table_lock); + set_name(bo, req.name); + pthread_mutex_unlock(&table_lock); + bo->reuse = 0; + } + + *name = bo->name; + + return 0; +} + +drm_public uint32_t etna_bo_handle(struct etna_bo *bo) +{ + return bo->handle; +} + +/* caller owns the dmabuf fd that is returned and is responsible + * to close() it when done + */ +drm_public int etna_bo_dmabuf(struct etna_bo *bo) +{ + int ret, prime_fd; + + ret = drmPrimeHandleToFD(bo->dev->fd, bo->handle, DRM_CLOEXEC, + &prime_fd); + if (ret) { + ERROR_MSG("failed to get dmabuf fd: %d", ret); + return ret; + } + + bo->reuse = 0; + + return prime_fd; +} + +drm_public uint32_t etna_bo_size(struct etna_bo *bo) +{ + return bo->size; +} + +drm_public void *etna_bo_map(struct etna_bo *bo) +{ + if (!bo->map) { + if (!bo->offset) { + get_buffer_info(bo); + } + + bo->map = drm_mmap(0, bo->size, PROT_READ | PROT_WRITE, + MAP_SHARED, bo->dev->fd, bo->offset); + if (bo->map == MAP_FAILED) { + ERROR_MSG("mmap failed: %s", strerror(errno)); + bo->map = NULL; + } + } + + return bo->map; +} + +drm_public int etna_bo_cpu_prep(struct etna_bo *bo, uint32_t op) +{ + struct drm_etnaviv_gem_cpu_prep req = { + .handle = bo->handle, + .op = op, + }; + + get_abs_timeout(&req.timeout, 5000000000); + + return drmCommandWrite(bo->dev->fd, DRM_ETNAVIV_GEM_CPU_PREP, + &req, sizeof(req)); +} + +drm_public void etna_bo_cpu_fini(struct etna_bo *bo) +{ + struct drm_etnaviv_gem_cpu_fini req = { + .handle = bo->handle, + }; + + drmCommandWrite(bo->dev->fd, DRM_ETNAVIV_GEM_CPU_FINI, + &req, sizeof(req)); +} |