drm/xe/multi_queue: Add exec_queue set_property ioctl support

This patch adds support for exec_queue set_property ioctl.
It is derived from the original work which is part of
https://patchwork.freedesktop.org/series/112188/

Currently only DRM_XE_EXEC_QUEUE_SET_PROPERTY_MULTI_QUEUE_PRIORITY
property can be dynamically set.

v2: Check for and update kernel-doc which property this ioctl
    supports (Matt Brost)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: Pallavi Mishra <pallavi.mishra@intel.com>
Signed-off-by: Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Link: https://patch.msgid.link/20251211010249.1647839-25-niranjana.vishwanathapura@intel.com

3 files changed, 39 insertions, 0 deletions

diff --git a/drivers/gpu/drm/xe/xe_device.c b/drivers/gpu/drm/xe/xe_device.c
index 1197f914ef77..7a498c8db7b1 100644
--- a/drivers/gpu/drm/xe/xe_device.c
+++ b/drivers/gpu/drm/xe/xe_device.c
@@ -207,6 +207,8 @@ static const struct drm_ioctl_desc xe_ioctls[] = {
 	DRM_IOCTL_DEF_DRV(XE_MADVISE, xe_vm_madvise_ioctl, DRM_RENDER_ALLOW),
 	DRM_IOCTL_DEF_DRV(XE_VM_QUERY_MEM_RANGE_ATTRS, xe_vm_query_vmas_attrs_ioctl,
 			  DRM_RENDER_ALLOW),
+	DRM_IOCTL_DEF_DRV(XE_EXEC_QUEUE_SET_PROPERTY, xe_exec_queue_set_property_ioctl,
+			  DRM_RENDER_ALLOW),
 };
 
 static long xe_drm_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
diff --git a/drivers/gpu/drm/xe/xe_exec_queue.c b/drivers/gpu/drm/xe/xe_exec_queue.c
index d0082eb45a4a..d738a9fea1e1 100644
--- a/drivers/gpu/drm/xe/xe_exec_queue.c
+++ b/drivers/gpu/drm/xe/xe_exec_queue.c
@@ -790,6 +790,41 @@ static const xe_exec_queue_set_property_fn exec_queue_set_property_funcs[] = {
 							exec_queue_set_multi_queue_priority,
 };
 
+int xe_exec_queue_set_property_ioctl(struct drm_device *dev, void *data,
+				     struct drm_file *file)
+{
+	struct xe_device *xe = to_xe_device(dev);
+	struct xe_file *xef = to_xe_file(file);
+	struct drm_xe_exec_queue_set_property *args = data;
+	struct xe_exec_queue *q;
+	int ret;
+	u32 idx;
+
+	if (XE_IOCTL_DBG(xe, args->reserved[0] || args->reserved[1]))
+		return -EINVAL;
+
+	if (XE_IOCTL_DBG(xe, args->property !=
+			 DRM_XE_EXEC_QUEUE_SET_PROPERTY_MULTI_QUEUE_PRIORITY))
+		return -EINVAL;
+
+	q = xe_exec_queue_lookup(xef, args->exec_queue_id);
+	if (XE_IOCTL_DBG(xe, !q))
+		return -ENOENT;
+
+	idx = array_index_nospec(args->property,
+				 ARRAY_SIZE(exec_queue_set_property_funcs));
+	ret = exec_queue_set_property_funcs[idx](xe, q, args->value);
+	if (XE_IOCTL_DBG(xe, ret))
+		goto err_post_lookup;
+
+	xe_exec_queue_put(q);
+	return 0;
+
+ err_post_lookup:
+	xe_exec_queue_put(q);
+	return ret;
+}
+
 static int exec_queue_user_ext_check(struct xe_exec_queue *q, u64 properties)
 {
 	u64 secondary_queue_valid_props = BIT_ULL(DRM_XE_EXEC_QUEUE_SET_PROPERTY_MULTI_GROUP) |
diff --git a/drivers/gpu/drm/xe/xe_exec_queue.h b/drivers/gpu/drm/xe/xe_exec_queue.h
index e6daa40003f2..ffcc1feb879e 100644
--- a/drivers/gpu/drm/xe/xe_exec_queue.h
+++ b/drivers/gpu/drm/xe/xe_exec_queue.h
@@ -125,6 +125,8 @@ int xe_exec_queue_destroy_ioctl(struct drm_device *dev, void *data,
 				struct drm_file *file);
 int xe_exec_queue_get_property_ioctl(struct drm_device *dev, void *data,
 				     struct drm_file *file);
+int xe_exec_queue_set_property_ioctl(struct drm_device *dev, void *data,
+				     struct drm_file *file);
 enum xe_exec_queue_priority xe_exec_queue_device_get_max_priority(struct xe_device *xe);
 
 void xe_exec_queue_last_fence_put(struct xe_exec_queue *e, struct xe_vm *vm);