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drm/etnaviv: submit support for out-fences 

Based on commit 4cd0945901 ("drm/msm: submit support for out-fences").
We increment the minor driver version so userspace can detect explicit
fence support.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
---
v3: Changed to work with fence returned from GPU submit.
This commit is contained in:
Philipp Zabel 2017-03-02 16:14:43 +01:00 committed by Lucas Stach
parent 6e2b98cf3b
commit 78ec187f64
3 changed files with 33 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/etnaviv/etnaviv_drv.c
View File

@ -512,7 +512,7 @@ static struct drm_driver etnaviv_drm_driver = {
.desc = "etnaviv DRM",
.date = "20151214",
.major = 1,
.minor = 0,
.minor = 1,
};
/*

28
drivers/gpu/drm/etnaviv/etnaviv_gem_submit.c
View File

@ -309,6 +309,8 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
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;
@ -376,6 +378,14 @@ 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;
@ -436,6 +446,22 @@ int etnaviv_ioctl_gem_submit(struct drm_device *dev, void *data,
if (ret == 0)
cmdbuf = NULL;
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:
@ -455,6 +481,8 @@ err_submit_objects:
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);

6
include/uapi/drm/etnaviv_drm.h
View File

@ -156,8 +156,10 @@ struct drm_etnaviv_gem_submit_bo {
*/
#define ETNA_SUBMIT_NO_IMPLICIT 0x0001
#define ETNA_SUBMIT_FENCE_FD_IN 0x0002
#define ETNA_SUBMIT_FENCE_FD_OUT 0x0004
#define ETNA_SUBMIT_FLAGS (ETNA_SUBMIT_NO_IMPLICIT | \
ETNA_SUBMIT_FENCE_FD_IN)
ETNA_SUBMIT_FENCE_FD_IN | \
ETNA_SUBMIT_FENCE_FD_OUT)
#define ETNA_PIPE_3D 0x00
#define ETNA_PIPE_2D 0x01
#define ETNA_PIPE_VG 0x02
@ -172,7 +174,7 @@ struct drm_etnaviv_gem_submit {
__u64 relocs; /* in, ptr to array of submit_reloc's */
__u64 stream; /* in, ptr to cmdstream */
__u32 flags; /* in, mask of ETNA_SUBMIT_x */
__s32 fence_fd; /* in, fence fd (see ETNA_SUBMIT_FENCE_FD_IN) */
__s32 fence_fd; /* in/out, fence fd (see ETNA_SUBMIT_FENCE_FD_x) */
};
/* The normal way to synchronize with the GPU is just to CPU_PREP on