openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/syncobj: add timeline signal ioctl for syncobj v5 

v2: individually allocate chain array, since chain node is free independently.
v3: all existing points must be already signaled before cpu perform signal operation,
    so add check condition for that.
v4: remove v3 change and add checking to prevent out-of-order
v5: unify binary and timeline

Signed-off-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Christian König <christian.koenig@amd.com>
Cc: Tobias Hector <Tobias.Hector@amd.com>
Cc: Jason Ekstrand <jason@jlekstrand.net>
Cc: Dave Airlie <airlied@redhat.com>
Cc: Chris Wilson <chris@chris-wilson.co.uk>
Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Link: https://patchwork.freedesktop.org/patch/295792/?series=58813&rev=1
This commit is contained in:
Chunming Zhou 2019-04-01 17:51:02 +08:00 committed by Christian König
parent ea569910cb
commit 50d1ebef79
4 changed files with 78 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/gpu/drm/drm_internal.h
View File

@ -190,6 +190,8 @@ int drm_syncobj_reset_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private);
int drm_syncobj_signal_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private);
int drm_syncobj_timeline_signal_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private);
int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private);

2
drivers/gpu/drm/drm_ioctl.c
View File

@ -696,6 +696,8 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
DRM_UNLOCKED|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_SIGNAL, drm_syncobj_signal_ioctl,
DRM_UNLOCKED|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL, drm_syncobj_timeline_signal_ioctl,
DRM_UNLOCKED|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF(DRM_IOCTL_SYNCOBJ_QUERY, drm_syncobj_query_ioctl,
DRM_UNLOCKED|DRM_RENDER_ALLOW),
DRM_IOCTL_DEF(DRM_IOCTL_CRTC_GET_SEQUENCE, drm_crtc_get_sequence_ioctl, DRM_UNLOCKED),

73
drivers/gpu/drm/drm_syncobj.c
View File

@ -1184,6 +1184,79 @@ drm_syncobj_signal_ioctl(struct drm_device *dev, void *data,
return ret;
}
int
drm_syncobj_timeline_signal_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private)
{
struct drm_syncobj_timeline_array *args = data;
struct drm_syncobj **syncobjs;
struct dma_fence_chain **chains;
uint64_t *points;
uint32_t i, j;
int ret;
if (!drm_core_check_feature(dev, DRIVER_SYNCOBJ))
return -EOPNOTSUPP;
if (args->pad != 0)
return -EINVAL;
if (args->count_handles == 0)
return -EINVAL;
ret = drm_syncobj_array_find(file_private,
u64_to_user_ptr(args->handles),
args->count_handles,
&syncobjs);
if (ret < 0)
return ret;
points = kmalloc_array(args->count_handles, sizeof(*points),
GFP_KERNEL);
if (!points) {
ret = -ENOMEM;
goto out;
}
if (!u64_to_user_ptr(args->points)) {
memset(points, 0, args->count_handles * sizeof(uint64_t));
} else if (copy_from_user(points, u64_to_user_ptr(args->points),
sizeof(uint64_t) * args->count_handles)) {
ret = -EFAULT;
goto err_points;
}
chains = kmalloc_array(args->count_handles, sizeof(void *), GFP_KERNEL);
if (!chains) {
ret = -ENOMEM;
goto err_points;
}
for (i = 0; i < args->count_handles; i++) {
chains[i] = kzalloc(sizeof(struct dma_fence_chain), GFP_KERNEL);
if (!chains[i]) {
for (j = 0; j < i; j++)
kfree(chains[j]);
ret = -ENOMEM;
goto err_chains;
}
}
for (i = 0; i < args->count_handles; i++) {
struct dma_fence *fence = dma_fence_get_stub();
drm_syncobj_add_point(syncobjs[i], chains[i],
fence, points[i]);
dma_fence_put(fence);
}
err_chains:
kfree(chains);
err_points:
kfree(points);
out:
drm_syncobj_array_free(syncobjs, args->count_handles);
return ret;
}
int drm_syncobj_query_ioctl(struct drm_device *dev, void *data,
struct drm_file *file_private)
{

1
include/uapi/drm/drm.h
View File

@ -943,6 +943,7 @@ extern "C" {
#define DRM_IOCTL_SYNCOBJ_TIMELINE_WAIT DRM_IOWR(0xCA, struct drm_syncobj_timeline_wait)
#define DRM_IOCTL_SYNCOBJ_QUERY DRM_IOWR(0xCB, struct drm_syncobj_timeline_array)
#define DRM_IOCTL_SYNCOBJ_TRANSFER DRM_IOWR(0xCC, struct drm_syncobj_transfer)
#define DRM_IOCTL_SYNCOBJ_TIMELINE_SIGNAL DRM_IOWR(0xCD, struct drm_syncobj_timeline_array)
/**
* Device specific ioctls should only be in their respective headers