diff options
| -rw-r--r-- | drivers/gpu/drm/msm/msm_drv.c | 3 | ||||
| -rw-r--r-- | drivers/gpu/drm/msm/msm_gem_submit.c | 42 | ||||
| -rw-r--r-- | include/uapi/drm/msm_drm.h | 4 |
3 files changed, 41 insertions, 8 deletions
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index a2834663dec4..e88c4b46a56f 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -41,9 +41,10 @@ * - 1.6.0 - Syncobj support * - 1.7.0 - Add MSM_PARAM_SUSPENDS to access suspend count * - 1.8.0 - Add MSM_BO_CACHED_COHERENT for supported GPUs (a6xx) + * - 1.9.0 - Add MSM_SUBMIT_FENCE_SN_IN */ #define MSM_VERSION_MAJOR 1 -#define MSM_VERSION_MINOR 8 +#define MSM_VERSION_MINOR 9 #define MSM_VERSION_PATCHLEVEL 0 static const struct drm_mode_config_funcs mode_config_funcs = { diff --git a/drivers/gpu/drm/msm/msm_gem_submit.c b/drivers/gpu/drm/msm/msm_gem_submit.c index 6cfa984dee6a..c6d60c8d286d 100644 --- a/drivers/gpu/drm/msm/msm_gem_submit.c +++ b/drivers/gpu/drm/msm/msm_gem_submit.c @@ -872,16 +872,46 @@ int msm_ioctl_gem_submit(struct drm_device *dev, void *data, submit->nr_cmds = i; + /* + * If using userspace provided seqno fence, validate that the id + * is available before arming sched job. Since access to fence_idr + * is serialized on the queue lock, the slot should be still avail + * after the job is armed + */ + if ((args->flags & MSM_SUBMIT_FENCE_SN_IN) && + idr_find(&queue->fence_idr, args->fence)) { + ret = -EINVAL; + goto out; + } + drm_sched_job_arm(&submit->base); submit->user_fence = dma_fence_get(&submit->base.s_fence->finished); - /* - * Allocate an id which can be used by WAIT_FENCE ioctl to map back - * to the underlying fence. - */ - submit->fence_id = idr_alloc_cyclic(&queue->fence_idr, - submit->user_fence, 1, INT_MAX, GFP_KERNEL); + if (args->flags & MSM_SUBMIT_FENCE_SN_IN) { + /* + * Userspace has assigned the seqno fence that it wants + * us to use. It is an error to pick a fence sequence + * number that is not available. + */ + submit->fence_id = args->fence; + ret = idr_alloc_u32(&queue->fence_idr, submit->user_fence, + &submit->fence_id, submit->fence_id, + GFP_KERNEL); + /* + * We've already validated that the fence_id slot is valid, + * so if idr_alloc_u32 failed, it is a kernel bug + */ + WARN_ON(ret); + } else { + /* + * Allocate an id which can be used by WAIT_FENCE ioctl to map + * back to the underlying fence. + */ + submit->fence_id = idr_alloc_cyclic(&queue->fence_idr, + submit->user_fence, 1, + INT_MAX, GFP_KERNEL); + } if (submit->fence_id < 0) { ret = submit->fence_id = 0; submit->fence_id = 0; diff --git a/include/uapi/drm/msm_drm.h b/include/uapi/drm/msm_drm.h index 2ee03ba08681..07efc8033492 100644 --- a/include/uapi/drm/msm_drm.h +++ b/include/uapi/drm/msm_drm.h @@ -232,6 +232,7 @@ struct drm_msm_gem_submit_bo { #define MSM_SUBMIT_SUDO 0x10000000 /* run submitted cmds from RB */ #define MSM_SUBMIT_SYNCOBJ_IN 0x08000000 /* enable input syncobj */ #define MSM_SUBMIT_SYNCOBJ_OUT 0x04000000 /* enable output syncobj */ +#define MSM_SUBMIT_FENCE_SN_IN 0x02000000 /* userspace passes in seqno fence */ #define MSM_SUBMIT_FLAGS ( \ MSM_SUBMIT_NO_IMPLICIT | \ MSM_SUBMIT_FENCE_FD_IN | \ @@ -239,6 +240,7 @@ struct drm_msm_gem_submit_bo { MSM_SUBMIT_SUDO | \ MSM_SUBMIT_SYNCOBJ_IN | \ MSM_SUBMIT_SYNCOBJ_OUT | \ + MSM_SUBMIT_FENCE_SN_IN | \ 0) #define MSM_SUBMIT_SYNCOBJ_RESET 0x00000001 /* Reset syncobj after wait. */ @@ -258,7 +260,7 @@ struct drm_msm_gem_submit_syncobj { */ struct drm_msm_gem_submit { __u32 flags; /* MSM_PIPE_x | MSM_SUBMIT_x */ - __u32 fence; /* out */ + __u32 fence; /* out (or in with MSM_SUBMIT_FENCE_SN_IN flag) */ __u32 nr_bos; /* in, number of submit_bo's */ __u32 nr_cmds; /* in, number of submit_cmd's */ __u64 bos; /* in, ptr to array of submit_bo's */ |