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drm/msm: submit support for out-fences

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Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2016-06-16 16:43:49 -04:00
parent f44d32c79f
commit 4cd0945901
2 changed files with 28 additions and 1 deletions
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25
drivers/gpu/drm/msm/msm_gem_submit.c
View file

@ -364,6 +364,8 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
struct msm_gem_submit *submit;
struct msm_gpu *gpu = priv->gpu;
struct fence *in_fence = NULL;
struct sync_file *sync_file = NULL;
int out_fence_fd = -1;
unsigned i;
int ret;
@ -383,6 +385,14 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
if (ret)
return ret;
if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) {
out_fence_fd = get_unused_fd_flags(O_CLOEXEC);
if (out_fence_fd < 0) {
ret = out_fence_fd;
goto out_unlock;
}
}
submit = submit_create(dev, gpu, args->nr_bos, args->nr_cmds);
if (!submit) {
ret = -ENOMEM;
@ -495,10 +505,23 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
goto out;
}
if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) {
sync_file = sync_file_create(submit->fence);
if (!sync_file) {
ret = -ENOMEM;
goto out;
}
}
msm_gpu_submit(gpu, submit, ctx);
args->fence = submit->fence->seqno;
if (args->flags & MSM_SUBMIT_FENCE_FD_OUT) {
fd_install(out_fence_fd, sync_file->file);
args->fence_fd = out_fence_fd;
}
out:
if (in_fence)
fence_put(in_fence);
@ -506,6 +529,8 @@ out:
if (ret)
msm_gem_submit_free(submit);
out_unlock:
if (ret && (out_fence_fd >= 0))
put_unused_fd(out_fence_fd);
mutex_unlock(&dev->struct_mutex);
return ret;
}

4
include/uapi/drm/msm_drm.h
View file

@ -187,9 +187,11 @@ struct drm_msm_gem_submit_bo {
/* Valid submit ioctl flags: */
#define MSM_SUBMIT_NO_IMPLICIT 0x80000000 /* disable implicit sync */
#define MSM_SUBMIT_FENCE_FD_IN 0x40000000 /* enable input fence_fd */
#define MSM_SUBMIT_FENCE_FD_OUT 0x20000000 /* enable output fence_fd */
#define MSM_SUBMIT_FLAGS ( \
MSM_SUBMIT_NO_IMPLICIT | \
MSM_SUBMIT_FENCE_FD_IN | \
MSM_SUBMIT_FENCE_FD_OUT | \
0)
/* Each cmdstream submit consists of a table of buffers involved, and
@ -203,7 +205,7 @@ struct drm_msm_gem_submit {
__u32 nr_cmds; /* in, number of submit_cmd's */
__u64 __user bos; /* in, ptr to array of submit_bo's */
__u64 __user cmds; /* in, ptr to array of submit_cmd's */
__s32 fence_fd; /* in/out fence fd (see MSM_SUBMIT_FENCE_FD_IN) */
__s32 fence_fd; /* in/out fence fd (see MSM_SUBMIT_FENCE_FD_IN/OUT) */
};
/* The normal way to synchronize with the GPU is just to CPU_PREP on