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drm/msm: submit support for in-fences

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Signed-off-by: Rob Clark <robdclark@gmail.com>
This commit is contained in:
Rob Clark 2016-06-16 16:08:19 -04:00
parent d9c181e22a
commit f0a42bb542
3 changed files with 39 additions and 5 deletions
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1
drivers/gpu/drm/msm/Kconfig
View file

@ -11,6 +11,7 @@ config DRM_MSM
select TMPFS
select QCOM_SCM
select SND_SOC_HDMI_CODEC if SND_SOC
select SYNC_FILE
default y
help
DRM/KMS driver for MSM/snapdragon.

34
drivers/gpu/drm/msm/msm_gem_submit.c
View file

@ -15,6 +15,8 @@
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <linux/sync_file.h>
#include "msm_drv.h"
#include "msm_gpu.h"
#include "msm_gem.h"
@ -361,6 +363,7 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
struct msm_file_private *ctx = file->driver_priv;
struct msm_gem_submit *submit;
struct msm_gpu *gpu = priv->gpu;
struct fence *in_fence = NULL;
unsigned i;
int ret;
@ -394,9 +397,32 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
if (ret)
goto out;
ret = submit_fence_sync(submit);
if (ret)
goto out;
if (args->flags & MSM_SUBMIT_FENCE_FD_IN) {
in_fence = sync_file_get_fence(args->fence_fd);
if (!in_fence) {
ret = -EINVAL;
goto out;
}
/* TODO if we get an array-fence due to userspace merging multiple
* fences, we need a way to determine if all the backing fences
* are from our own context..
*/
if (in_fence->context != gpu->fctx->context) {
ret = fence_wait(in_fence, true);
if (ret)
goto out;
}
}
if (!(args->fence & MSM_SUBMIT_NO_IMPLICIT)) {
ret = submit_fence_sync(submit);
if (ret)
goto out;
}
ret = submit_pin_objects(submit);
if (ret)
@ -467,6 +493,8 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data,
args->fence = submit->fence->seqno;
out:
if (in_fence)
fence_put(in_fence);
submit_cleanup(submit);
if (ret)
msm_gem_submit_free(submit);

9
include/uapi/drm/msm_drm.h
View file

@ -185,8 +185,12 @@ struct drm_msm_gem_submit_bo {
};
/* Valid submit ioctl flags: */
/* to start, nothing.. */
#define MSM_SUBMIT_FLAGS 0
#define MSM_SUBMIT_NO_IMPLICIT 0x80000000 /* disable implicit sync */
#define MSM_SUBMIT_FENCE_FD_IN 0x40000000 /* enable input fence_fd */
#define MSM_SUBMIT_FLAGS ( \
MSM_SUBMIT_NO_IMPLICIT | \
MSM_SUBMIT_FENCE_FD_IN | \
0)
/* Each cmdstream submit consists of a table of buffers involved, and
* one or more cmdstream buffers. This allows for conditional execution
@ -199,6 +203,7 @@ 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) */
};
/* The normal way to synchronize with the GPU is just to CPU_PREP on