drm: initial multiple nodes ioctl work.drm-render-nodes

just adds some unchecked ioctls to setup the nodes.

Signed-off-by: Dave Airlie <airlied@redhat.com>

5 files changed, 82 insertions, 1 deletions

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 62e4a5d92e0e..fcd1f58ba85a 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -146,7 +146,9 @@ static struct drm_ioctl_desc drm_ioctls[] = {
 	DRM_IOCTL_DEF(DRM_IOCTL_MODE_ADDFB, drm_mode_addfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 	DRM_IOCTL_DEF(DRM_IOCTL_MODE_RMFB, drm_mode_rmfb, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 	DRM_IOCTL_DEF(DRM_IOCTL_MODE_PAGE_FLIP, drm_mode_page_flip_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
-	DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED)
+	DRM_IOCTL_DEF(DRM_IOCTL_MODE_DIRTYFB, drm_mode_dirtyfb_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+	DRM_IOCTL_DEF(DRM_IOCTL_RENDER_NODE_CREATE, drm_render_node_create_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+	DRM_IOCTL_DEF(DRM_IOCTL_RENDER_NODE_REMOVE, drm_render_node_remove_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 };
 
 #define DRM_CORE_IOCTL_COUNT	ARRAY_SIZE( drm_ioctls )
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c
index 22c62501aa68..ba00fb2022ed 100644
--- a/drivers/gpu/drm/drm_stub.c
+++ b/drivers/gpu/drm/drm_stub.c
@@ -602,3 +602,59 @@ void drm_put_dev(struct drm_device *dev)
 	kfree(dev);
 }
 EXPORT_SYMBOL(drm_put_dev);
+
+int drm_render_node_create_ioctl(struct drm_device *dev, void *data,
+				 struct drm_file *file_priv)
+{
+	struct drm_render_node_create *args = data;
+	int ret;
+	struct drm_minor *new_minor;
+	int total_ids, i;
+	uint32_t __user *ids_ptr;
+	ret = drm_create_minor_render(dev, &new_minor);
+	if (ret)
+		goto out;
+
+	args->node_minor_id = new_minor->index;
+
+	if (args->num_crtc == 0 &&
+	    args->num_encoder == 0 &&
+	    args->num_connector == 0)
+		goto out;
+	if (args->num_crtc == 0 ||
+	    args->num_encoder == 0 ||
+	    args->num_connector == 0) {
+		ret = -EINVAL;
+		goto out;
+	}
+
+	ret = drm_mode_group_init(dev, &new_minor->mode_group);
+	if (ret)
+		goto out;
+
+	ids_ptr = (uint32_t __user *)(unsigned long)args->id_list_ptr;
+	total_ids = args->num_crtc + args->num_encoder + args->num_connector;
+	for (i = 0; i < total_ids; i++) {
+		if (get_user(new_minor->mode_group.id_list[i], &ids_ptr[i])) {
+			ret = -EFAULT;
+			goto out_put;
+		}
+	}
+out_put:
+	drm_put_minor(&new_minor);
+out:
+	return ret;
+}
+
+int drm_render_node_remove_ioctl(struct drm_device *dev, void *data,
+				 struct drm_file *file_priv)
+{
+	struct drm_render_node_remove *args = data;
+	struct drm_minor *del_minor, *tmp;
+
+	list_for_each_entry_safe(del_minor, tmp, &dev->render_minor_list, render_node_list) {
+		if (del_minor->index == args->node_minor_id)
+			drm_put_minor(&del_minor);
+	}
+	return 0;
+}
diff --git a/include/drm/drm.h b/include/drm/drm.h
index e3f46e0cb7dc..9b2244397ca3 100644
--- a/include/drm/drm.h
+++ b/include/drm/drm.h
@@ -629,6 +629,9 @@ struct drm_gem_open {
 #define DRM_IOCTL_GEM_FLINK		DRM_IOWR(0x0a, struct drm_gem_flink)
 #define DRM_IOCTL_GEM_OPEN		DRM_IOWR(0x0b, struct drm_gem_open)
 
+#define DRM_IOCTL_RENDER_NODE_CREATE    DRM_IOWR(0x0c, struct drm_render_node_create)
+#define DRM_IOCTL_RENDER_NODE_REMOVE    DRM_IOWR(0x0d, struct drm_render_node_remove)
+
 #define DRM_IOCTL_SET_UNIQUE		DRM_IOW( 0x10, struct drm_unique)
 #define DRM_IOCTL_AUTH_MAGIC		DRM_IOW( 0x11, struct drm_auth)
 #define DRM_IOCTL_BLOCK			DRM_IOWR(0x12, struct drm_block)
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 13c1efb7b305..63d1065a8ffc 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -1357,6 +1357,12 @@ extern int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
 		       struct drm_driver *driver);
 extern void drm_put_dev(struct drm_device *dev);
 extern int drm_put_minor(struct drm_minor **minor);
+
+extern int drm_render_node_create_ioctl(struct drm_device *dev, void *data,
+					struct drm_file *file_priv);
+extern int drm_render_node_remove_ioctl(struct drm_device *dev, void *data,
+					struct drm_file *file_priv);
+
 extern unsigned int drm_debug;
 
 extern struct class *drm_class;
diff --git a/include/drm/drm_mode.h b/include/drm/drm_mode.h
index c5ba1636613c..8fe810b9017a 100644
--- a/include/drm/drm_mode.h
+++ b/include/drm/drm_mode.h
@@ -343,4 +343,18 @@ struct drm_mode_crtc_page_flip {
 	__u64 user_data;
 };
 
+/* render node create and remove functions
+   if crtc/encoders/connectors all == 0 then gpgpu node */
+struct drm_render_node_create {
+	__u32 node_minor_id;
+	__u32 num_crtc;
+	__u32 num_encoder;
+	__u32 num_connector;
+	__u64 id_list_ptr;
+};
+
+struct drm_render_node_remove {
+	__u32 node_minor_id;
+};
+
 #endif