diff options
Diffstat (limited to 'drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c')
| -rw-r--r-- | drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c | 67 |
1 files changed, 65 insertions, 2 deletions
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c index 726090d7a6ac..de80ee1b71df 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c @@ -14,7 +14,9 @@ * this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <linux/dma-fence-array.h> #include <linux/reservation.h> +#include <linux/sync_file.h> #include "etnaviv_cmdbuf.h" #include "etnaviv_drv.h" #include "etnaviv_gpu.h" @@ -42,6 +44,7 @@ static struct etnaviv_gem_submit *submit_create(struct drm_device *dev, /* initially, until copy_from_user() and bo lookup succeeds: */ submit->nr_bos = 0; + submit->fence = NULL; ww_acquire_init(&submit->ticket, &reservation_ww_class); } @@ -169,8 +172,10 @@ static int submit_fence_sync(const struct etnaviv_gem_submit *submit) for (i = 0; i < submit->nr_bos; i++) { struct etnaviv_gem_object *etnaviv_obj = submit->bos[i].obj; bool write = submit->bos[i].flags & ETNA_SUBMIT_BO_WRITE; + bool explicit = !(submit->flags & ETNA_SUBMIT_NO_IMPLICIT); - ret = etnaviv_gpu_fence_sync_obj(etnaviv_obj, context, write); + ret = etnaviv_gpu_fence_sync_obj(etnaviv_obj, context, write, + explicit); if (ret) break; } @@ -290,6 +295,8 @@ static void submit_cleanup(struct etnaviv_gem_submit *submit) } ww_acquire_fini(&submit->ticket); + if (submit->fence) + dma_fence_put(submit->fence); kfree(submit); } @@ -303,6 +310,9 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, struct etnaviv_gem_submit *submit; struct etnaviv_cmdbuf *cmdbuf; struct etnaviv_gpu *gpu; + struct dma_fence *in_fence = NULL; + struct sync_file *sync_file = NULL; + int out_fence_fd = -1; void *stream; int ret; @@ -326,6 +336,11 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, return -EINVAL; } + if (args->flags & ~ETNA_SUBMIT_FLAGS) { + DRM_ERROR("invalid flags: 0x%x\n", args->flags); + return -EINVAL; + } + /* * Copy the command submission and bo array to kernel space in * one go, and do this outside of any locks. @@ -365,12 +380,22 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, goto err_submit_cmds; } + if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) { + out_fence_fd = get_unused_fd_flags(O_CLOEXEC); + if (out_fence_fd < 0) { + ret = out_fence_fd; + goto err_submit_cmds; + } + } + submit = submit_create(dev, gpu, args->nr_bos); if (!submit) { ret = -ENOMEM; goto err_submit_cmds; } + submit->flags = args->flags; + ret = submit_lookup_objects(submit, file, bos, args->nr_bos); if (ret) goto err_submit_objects; @@ -385,6 +410,24 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, goto err_submit_objects; } + if (args->flags & ETNA_SUBMIT_FENCE_FD_IN) { + in_fence = sync_file_get_fence(args->fence_fd); + if (!in_fence) { + ret = -EINVAL; + goto err_submit_objects; + } + + /* + * Wait if the fence is from a foreign context, or if the fence + * array contains any fence from a foreign context. + */ + if (!dma_fence_match_context(in_fence, gpu->fence_context)) { + ret = dma_fence_wait(in_fence, true); + if (ret) + goto err_submit_objects; + } + } + ret = submit_fence_sync(submit); if (ret) goto err_submit_objects; @@ -405,7 +448,23 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data, if (ret == 0) cmdbuf = NULL; - args->fence = submit->fence; + if (args->flags & ETNA_SUBMIT_FENCE_FD_OUT) { + /* + * This can be improved: ideally we want to allocate the sync + * file before kicking off the GPU job and just attach the + * fence to the sync file here, eliminating the ENOMEM + * possibility at this stage. + */ + sync_file = sync_file_create(submit->fence); + if (!sync_file) { + ret = -ENOMEM; + goto out; + } + fd_install(out_fence_fd, sync_file->file); + } + + args->fence_fd = out_fence_fd; + args->fence = submit->fence->seqno; out: submit_unpin_objects(submit); @@ -419,9 +478,13 @@ out: flush_workqueue(priv->wq); err_submit_objects: + if (in_fence) + dma_fence_put(in_fence); submit_cleanup(submit); err_submit_cmds: + if (ret && (out_fence_fd >= 0)) + put_unused_fd(out_fence_fd); /* if we still own the cmdbuf */ if (cmdbuf) etnaviv_cmdbuf_free(cmdbuf); |