Allow UM to label a BO for which it possesses a DRM handle.
Signed-off-by: Adrián Larumbe <adrian.laru...@collabora.com>
---
drivers/gpu/drm/panthor/panthor_drv.c | 37 +++++++++++++++++++++++++++
include/uapi/drm/panthor_drm.h | 19 ++++++++++++++
2 files changed, 56 insertions(+)
diff --git a/drivers/gpu/drm/panthor/panthor_drv.c
b/drivers/gpu/drm/panthor/panthor_drv.c
index 310bb44abe1a..e91acf132e06 100644
--- a/drivers/gpu/drm/panthor/panthor_drv.c
+++ b/drivers/gpu/drm/panthor/panthor_drv.c
@@ -1330,6 +1330,41 @@ static int panthor_ioctl_vm_get_state(struct drm_device
*ddev, void *data,
return 0;
}
+static int panthor_ioctl_bo_set_label(struct drm_device *ddev, void *data,
+ struct drm_file *file)
+{
+ struct drm_panthor_bo_set_label *args = data;
+ struct drm_gem_object *obj;
+ const char *label;
+ unsigned long len;
+ int ret = 0;
+
+ obj = drm_gem_object_lookup(file, args->handle);
+ if (!obj)
+ return -ENOENT;
+
+ if (args->size && args->label) {
+ len = (args->size < PAGE_SIZE) ? args->size : PAGE_SIZE;
+ label = strndup_user(u64_to_user_ptr(args->label), len);
+ if (IS_ERR(label)) {
+ ret = PTR_ERR(label);
+ goto err_label;
+ }
+ } else if (args->size && !args->label) {
+ ret = -EINVAL;
+ goto err_label;
+ } else {
+ label = NULL;
+ }
+
+ panthor_gem_bo_set_label(obj, label);
+
+err_label:
+ drm_gem_object_put(obj);
+
+ return ret;
+}
+
static int
panthor_open(struct drm_device *ddev, struct drm_file *file)
{
@@ -1399,6 +1434,7 @@ static const struct drm_ioctl_desc
panthor_drm_driver_ioctls[] = {
PANTHOR_IOCTL(TILER_HEAP_CREATE, tiler_heap_create, DRM_RENDER_ALLOW),
PANTHOR_IOCTL(TILER_HEAP_DESTROY, tiler_heap_destroy, DRM_RENDER_ALLOW),
PANTHOR_IOCTL(GROUP_SUBMIT, group_submit, DRM_RENDER_ALLOW),
+ PANTHOR_IOCTL(BO_SET_LABEL, bo_set_label, DRM_RENDER_ALLOW),
};
static int panthor_mmap(struct file *filp, struct vm_area_struct *vma)
@@ -1508,6 +1544,7 @@ static void panthor_debugfs_init(struct drm_minor *minor)
* - 1.2 - adds DEV_QUERY_GROUP_PRIORITIES_INFO query
* - adds PANTHOR_GROUP_PRIORITY_REALTIME priority
* - 1.3 - adds DRM_PANTHOR_GROUP_STATE_INNOCENT flag
+ * - 1.4 - adds DRM_IOCTL_PANTHOR_BO_SET_LABEL ioctl
*/
static const struct drm_driver panthor_drm_driver = {
.driver_features = DRIVER_RENDER | DRIVER_GEM | DRIVER_SYNCOBJ |
diff --git a/include/uapi/drm/panthor_drm.h b/include/uapi/drm/panthor_drm.h
index 97e2c4510e69..26b52f147360 100644
--- a/include/uapi/drm/panthor_drm.h
+++ b/include/uapi/drm/panthor_drm.h
@@ -127,6 +127,9 @@ enum drm_panthor_ioctl_id {
/** @DRM_PANTHOR_TILER_HEAP_DESTROY: Destroy a tiler heap. */
DRM_PANTHOR_TILER_HEAP_DESTROY,
+
+ /** @DRM_PANTHOR_BO_SET_LABEL: Label a BO. */
+ DRM_PANTHOR_BO_SET_LABEL,
};
/**
@@ -977,6 +980,20 @@ struct drm_panthor_tiler_heap_destroy {
__u32 pad;
};
+/**
+ * struct drm_panthor_bo_set_label - Arguments passed to
DRM_IOCTL_PANTHOR_BO_SET_LABEL
+ */
+struct drm_panthor_bo_set_label {
+ /** @handle: Handle of the buffer object to label. */
+ __u32 handle;
+
+ /** @size: Length of the label, including the NULL terminator. */
+ __u32 size;
+
+ /** @label: User pointer to a NULL-terminated string */
+ __u64 label;
+};
+
/**
* DRM_IOCTL_PANTHOR() - Build a Panthor IOCTL number
* @__access: Access type. Must be R, W or RW.
@@ -1019,6 +1036,8 @@ enum {
DRM_IOCTL_PANTHOR(WR, TILER_HEAP_CREATE, tiler_heap_create),
DRM_IOCTL_PANTHOR_TILER_HEAP_DESTROY =
DRM_IOCTL_PANTHOR(WR, TILER_HEAP_DESTROY, tiler_heap_destroy),
+ DRM_IOCTL_PANTHOR_BO_SET_LABEL =
+ DRM_IOCTL_PANTHOR(WR, BO_SET_LABEL, bo_set_label),
};
#if defined(__cplusplus)
--
2.48.1
