drm/nouveau/nvif: remove device args

These were once used by used by userspace tools (with nvkm built as a
library), to access multiple GPUs from a single nvif_client.

The DRM code just uses the driver's default device, so remove the
arguments.
Signed-off-by: Ben Skeggs <bskeggs@nvidia.com>
Signed-off-by: Danilo Krummrich <dakr@kernel.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20240726043828.58966-24-bskeggs@nvidia.com

drivers/gpu/drm/nouveau/include/nvif/cl0080.h

@@ -2,13 +2,6 @@
 #ifndef __NVIF_CL0080_H__
 #define __NVIF_CL0080_H__
 
-struct nv_device_v0 {
-	__u8  version;
-	__u8  priv;
-	__u8  pad02[6];
-	__u64 device;	/* device identifier, ~0 for client default */
-};
-
 #define NV_DEVICE_V0_INFO                                                  0x00
 #define NV_DEVICE_V0_TIME                                                  0x01
 

drivers/gpu/drm/nouveau/include/nvif/device.h

@@ -18,8 +18,7 @@ struct nvif_device {
 	struct nvif_user user;
 };
 
-int  nvif_device_ctor(struct nvif_object *, const char *name, u32 handle,
-		      s32 oclass, void *, u32, struct nvif_device *);
+int  nvif_device_ctor(struct nvif_client *, const char *name, struct nvif_device *);
 void nvif_device_dtor(struct nvif_device *);
 u64  nvif_device_time(struct nvif_device *);
 

drivers/gpu/drm/nouveau/nouveau_drm.c

@@ -261,12 +261,7 @@ nouveau_cli_init(struct nouveau_drm *drm, const char *sname,
 		goto done;
 	}
 
-	ret = nvif_device_ctor(&cli->base.object, "drmDevice", 0, NV_DEVICE,
-			       &(struct nv_device_v0) {
-					.device = ~0,
-					.priv = true,
-			       }, sizeof(struct nv_device_v0),
-			       &cli->device);
+	ret = nvif_device_ctor(&cli->base, "drmDevice", &cli->device);
 	if (ret) {
 		NV_PRINTK(err, cli, "Device allocation failed: %d\n", ret);
 		goto done;

drivers/gpu/drm/nouveau/nvif/device.c

@@ -21,8 +21,8 @@
  *
  * Authors: Ben Skeggs <bskeggs@redhat.com>
  */
-
 #include <nvif/device.h>
+#include <nvif/client.h>
 
 u64
 nvif_device_time(struct nvif_device *device)
@@ -48,11 +48,10 @@ nvif_device_dtor(struct nvif_device *device)
 }
 
 int
-nvif_device_ctor(struct nvif_object *parent, const char *name, u32 handle,
-		 s32 oclass, void *data, u32 size, struct nvif_device *device)
+nvif_device_ctor(struct nvif_client *client, const char *name, struct nvif_device *device)
 {
-	int ret = nvif_object_ctor(parent, name ? name : "nvifDevice", handle,
-				   oclass, data, size, &device->object);
+	int ret = nvif_object_ctor(&client->object, name ? name : "nvifDevice", 0,
+				   0x0080, NULL, 0, &device->object);
 	device->runlist = NULL;
 	device->user.func = NULL;
 	if (ret == 0) {

drivers/gpu/drm/nouveau/nvkm/engine/device/user.c

@@ -357,7 +357,7 @@ nvkm_udevice_child_get(struct nvkm_object *object, int index,
 }
 
 static const struct nvkm_object_func
-nvkm_udevice_super = {
+nvkm_udevice = {
 	.init = nvkm_udevice_init,
 	.fini = nvkm_udevice_fini,
 	.mthd = nvkm_udevice_mthd,
@@ -371,49 +371,19 @@ nvkm_udevice_super = {
 	.sclass = nvkm_udevice_child_get,
 };
 
-static const struct nvkm_object_func
-nvkm_udevice = {
-	.init = nvkm_udevice_init,
-	.fini = nvkm_udevice_fini,
-	.mthd = nvkm_udevice_mthd,
-	.sclass = nvkm_udevice_child_get,
-};
-
 static int
 nvkm_udevice_new(const struct nvkm_oclass *oclass, void *data, u32 size,
 		 struct nvkm_object **pobject)
 {
-	union {
-		struct nv_device_v0 v0;
-	} *args = data;
 	struct nvkm_client *client = oclass->client;
-	struct nvkm_object *parent = &client->object;
-	const struct nvkm_object_func *func;
 	struct nvkm_udevice *udev;
-	int ret = -ENOSYS;
-
-	nvif_ioctl(parent, "create device size %d\n", size);
-	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
-		nvif_ioctl(parent, "create device v%d device %016llx\n",
-			   args->v0.version, args->v0.device);
-	} else
-		return ret;
-
-	/* give priviledged clients register access */
-	if (args->v0.priv)
-		func = &nvkm_udevice_super;
-	else
-		func = &nvkm_udevice;
 
 	if (!(udev = kzalloc(sizeof(*udev), GFP_KERNEL)))
 		return -ENOMEM;
-	nvkm_object_ctor(func, oclass, &udev->object);
+	nvkm_object_ctor(&nvkm_udevice, oclass, &udev->object);
 	*pobject = &udev->object;
 
 	/* find the device that matches what the client requested */
-	if (args->v0.device != ~0)
-		udev->device = nvkm_device_find(args->v0.device);
-	else
 	udev->device = nvkm_device_find(client->device);
 	if (!udev->device)
 		return -ENODEV;