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drm-uapi/v3d: extend interface for multiple semaphores support

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Extends command submission ioctls to support multiple semaphores through
generic ioctl extension design. In this approach, a multisync extension
subclasses a generic ioctl extension struct (base) and enables more than
one wait and signal semaphores. Multisync extension also uses v3d_queue
to specify the wait_stage, i.e. which job should sync before start (wait
semaphores).

Signed-off-by: Melissa Wen <mwen@igalia.com>
Reviewed-by: Iago Toral Quiroga <itoral@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13178>
This commit is contained in:
Melissa Wen
2021-10-04 12:22:38 +01:00
parent d5bd18fbb3
commit 264dedf690
1 changed files with 78 additions and 0 deletions
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78
include/drm-uapi/v3d_drm.h
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@@ -58,6 +58,67 @@ extern "C" {
struct drm_v3d_perfmon_get_values)
#define DRM_V3D_SUBMIT_CL_FLUSH_CACHE 0x01
#define DRM_V3D_SUBMIT_EXTENSION 0x02
/* struct drm_v3d_extension - ioctl extensions
*
* Linked-list of generic extensions where the id identify which struct is
* pointed by ext_data. Therefore, DRM_V3D_EXT_ID_* is used on id to identify
* the extension type.
*/
struct drm_v3d_extension {
__u64 next;
__u32 id;
#define DRM_V3D_EXT_ID_MULTI_SYNC 0x01
__u32 flags; /* mbz */
};
/* struct drm_v3d_sem - wait/signal semaphore
*
* If binary semaphore, it only takes syncobj handle and ignores flags and
* point fields. Point is defined for timeline syncobj feature.
*/
struct drm_v3d_sem {
__u32 handle; /* syncobj */
/* rsv below, for future uses */
__u32 flags;
__u64 point; /* for timeline sem support */
__u64 mbz[2]; /* must be zero, rsv */
};
/* Enum for each of the V3D queues. */
enum v3d_queue {
V3D_BIN,
V3D_RENDER,
V3D_TFU,
V3D_CSD,
V3D_CACHE_CLEAN,
};
/**
* struct drm_v3d_multi_sync - ioctl extension to add support multiples
* syncobjs for commands submission.
*
* When an extension of DRM_V3D_EXT_ID_MULTI_SYNC id is defined, it points to
* this extension to define wait and signal dependencies, instead of single
* in/out sync entries on submitting commands. The field flags is used to
* determine the stage to set wait dependencies.
*/
struct drm_v3d_multi_sync {
struct drm_v3d_extension base;
/* Array of wait and signal semaphores */
__u64 in_syncs;
__u64 out_syncs;
/* Number of entries */
__u32 in_sync_count;
__u32 out_sync_count;
/* set the stage (v3d_queue) to sync */
__u32 wait_stage;
__u32 pad; /* mbz */
};
/**
* struct drm_v3d_submit_cl - ioctl argument for submitting commands to the 3D
@@ -135,12 +196,16 @@ struct drm_v3d_submit_cl {
/* Number of BO handles passed in (size is that times 4). */
__u32 bo_handle_count;
/* DRM_V3D_SUBMIT_* properties */
__u32 flags;
/* ID of the perfmon to attach to this job. 0 means no perfmon. */
__u32 perfmon_id;
__u32 pad;
/* Pointer to an array of ioctl extensions*/
__u64 extensions;
};
/**
@@ -210,6 +275,7 @@ enum drm_v3d_param {
DRM_V3D_PARAM_SUPPORTS_CSD,
DRM_V3D_PARAM_SUPPORTS_CACHE_FLUSH,
DRM_V3D_PARAM_SUPPORTS_PERFMON,
DRM_V3D_PARAM_SUPPORTS_MULTISYNC_EXT,
};
struct drm_v3d_get_param {
@@ -248,6 +314,11 @@ struct drm_v3d_submit_tfu {
__u32 in_sync;
/* Sync object to signal when the TFU job is done. */
__u32 out_sync;
__u32 flags;
/* Pointer to an array of ioctl extensions*/
__u64 extensions;
};
/* Submits a compute shader for dispatch. This job will block on any
@@ -276,6 +347,13 @@ struct drm_v3d_submit_csd {
/* ID of the perfmon to attach to this job. 0 means no perfmon. */
__u32 perfmon_id;
/* Pointer to an array of ioctl extensions*/
__u64 extensions;
__u32 flags;
__u32 pad;
};
enum {