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drm/msm: Add VM_BIND ioctl

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Add a VM_BIND ioctl for binding/unbinding buffers into a VM.  This is
only supported if userspace has opted in to MSM_PARAM_EN_VM_BIND.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Tested-by: Antonino Maniscalco <antomani103@gmail.com>
Reviewed-by: Antonino Maniscalco <antomani103@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/661524/
This commit is contained in:
Rob Clark
2025-06-29 13:13:18 -07:00
committed by Rob Clark
parent ecfd9fa83f
commit 2e6a8a1fe2
7 changed files with 1208 additions and 36 deletions
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74
include/uapi/drm/msm_drm.h
View File

@@ -272,7 +272,10 @@ struct drm_msm_gem_submit_cmd {
__u32 size; /* in, cmdstream size */
__u32 pad;
__u32 nr_relocs; /* in, number of submit_reloc's */
__u64 relocs; /* in, ptr to array of submit_reloc's */
union {
__u64 relocs; /* in, ptr to array of submit_reloc's */
__u64 iova; /* cmdstream address (for VM_BIND contexts) */
};
};
/* Each buffer referenced elsewhere in the cmdstream submit (ie. the
@@ -339,7 +342,74 @@ struct drm_msm_gem_submit {
__u32 nr_out_syncobjs; /* in, number of entries in out_syncobj. */
__u32 syncobj_stride; /* in, stride of syncobj arrays. */
__u32 pad; /*in, reserved for future use, always 0. */
};
#define MSM_VM_BIND_OP_UNMAP 0
#define MSM_VM_BIND_OP_MAP 1
#define MSM_VM_BIND_OP_MAP_NULL 2
#define MSM_VM_BIND_OP_DUMP 1
#define MSM_VM_BIND_OP_FLAGS ( \
MSM_VM_BIND_OP_DUMP | \
0)
/**
* struct drm_msm_vm_bind_op - bind/unbind op to run
*/
struct drm_msm_vm_bind_op {
/** @op: one of MSM_VM_BIND_OP_x */
__u32 op;
/** @handle: GEM object handle, MBZ for UNMAP or MAP_NULL */
__u32 handle;
/** @obj_offset: Offset into GEM object, MBZ for UNMAP or MAP_NULL */
__u64 obj_offset;
/** @iova: Address to operate on */
__u64 iova;
/** @range: Number of bites to to map/unmap */
__u64 range;
/** @flags: Bitmask of MSM_VM_BIND_OP_FLAG_x */
__u32 flags;
/** @pad: MBZ */
__u32 pad;
};
#define MSM_VM_BIND_FENCE_FD_IN 0x00000001
#define MSM_VM_BIND_FENCE_FD_OUT 0x00000002
#define MSM_VM_BIND_FLAGS ( \
MSM_VM_BIND_FENCE_FD_IN | \
MSM_VM_BIND_FENCE_FD_OUT | \
0)
/**
* struct drm_msm_vm_bind - Input of &DRM_IOCTL_MSM_VM_BIND
*/
struct drm_msm_vm_bind {
/** @flags: in, bitmask of MSM_VM_BIND_x */
__u32 flags;
/** @nr_ops: the number of bind ops in this ioctl */
__u32 nr_ops;
/** @fence_fd: in/out fence fd (see MSM_VM_BIND_FENCE_FD_IN/OUT) */
__s32 fence_fd;
/** @queue_id: in, submitqueue id */
__u32 queue_id;
/** @in_syncobjs: in, ptr to array of drm_msm_gem_syncobj */
__u64 in_syncobjs;
/** @out_syncobjs: in, ptr to array of drm_msm_gem_syncobj */
__u64 out_syncobjs;
/** @nr_in_syncobjs: in, number of entries in in_syncobj */
__u32 nr_in_syncobjs;
/** @nr_out_syncobjs: in, number of entries in out_syncobj */
__u32 nr_out_syncobjs;
/** @syncobj_stride: in, stride of syncobj arrays */
__u32 syncobj_stride;
/** @op_stride: sizeof each struct drm_msm_vm_bind_op in @ops */
__u32 op_stride;
union {
/** @op: used if num_ops == 1 */
struct drm_msm_vm_bind_op op;
/** @ops: userptr to array of drm_msm_vm_bind_op if num_ops > 1 */
__u64 ops;
};
};
#define MSM_WAIT_FENCE_BOOST 0x00000001
@@ -435,6 +505,7 @@ struct drm_msm_submitqueue_query {
#define DRM_MSM_SUBMITQUEUE_NEW 0x0A
#define DRM_MSM_SUBMITQUEUE_CLOSE 0x0B
#define DRM_MSM_SUBMITQUEUE_QUERY 0x0C
#define DRM_MSM_VM_BIND 0x0D
#define DRM_IOCTL_MSM_GET_PARAM DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_GET_PARAM, struct drm_msm_param)
#define DRM_IOCTL_MSM_SET_PARAM DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SET_PARAM, struct drm_msm_param)
@@ -448,6 +519,7 @@ struct drm_msm_submitqueue_query {
#define DRM_IOCTL_MSM_SUBMITQUEUE_NEW DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_NEW, struct drm_msm_submitqueue)
#define DRM_IOCTL_MSM_SUBMITQUEUE_CLOSE DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_CLOSE, __u32)
#define DRM_IOCTL_MSM_SUBMITQUEUE_QUERY DRM_IOW (DRM_COMMAND_BASE + DRM_MSM_SUBMITQUEUE_QUERY, struct drm_msm_submitqueue_query)
#define DRM_IOCTL_MSM_VM_BIND DRM_IOWR(DRM_COMMAND_BASE + DRM_MSM_VM_BIND, struct drm_msm_vm_bind)
#if defined(__cplusplus)
}