[mirror_ubuntu-eoan-kernel.git] / drivers / gpu / drm / nouveau / nvkm / engine / device / user.c

/*
 * Copyright 2012 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */
#define nvkm_udevice(p) container_of((p), struct nvkm_udevice, object)
#include "priv.h"
#include "ctrl.h"

#include <core/client.h>
#include <subdev/fb.h>
#include <subdev/instmem.h>
#include <subdev/timer.h>

#include <nvif/class.h>
#include <nvif/unpack.h>

struct nvkm_udevice {
	struct nvkm_object object;
	struct nvkm_device *device;
};

static int
nvkm_udevice_info(struct nvkm_udevice *udev, void *data, u32 size)
{
	struct nvkm_object *object = &udev->object;
	struct nvkm_device *device = udev->device;
	struct nvkm_fb *fb = device->fb;
	struct nvkm_instmem *imem = device->imem;
	union {
		struct nv_device_info_v0 v0;
	} *args = data;
	int ret;

	nvif_ioctl(object, "device info size %d\n", size);
	if (nvif_unpack(args->v0, 0, 0, false)) {
		nvif_ioctl(object, "device info vers %d\n", args->v0.version);
	} else
		return ret;

	switch (device->chipset) {
	case 0x01a:
	case 0x01f:
	case 0x04c:
	case 0x04e:
	case 0x063:
	case 0x067:
	case 0x068:
	case 0x0aa:
	case 0x0ac:
	case 0x0af:
		args->v0.platform = NV_DEVICE_INFO_V0_IGP;
		break;
	default:
		if (device->pdev) {
			if (pci_find_capability(device->pdev, PCI_CAP_ID_AGP))
				args->v0.platform = NV_DEVICE_INFO_V0_AGP;
			else
			if (pci_is_pcie(device->pdev))
				args->v0.platform = NV_DEVICE_INFO_V0_PCIE;
			else
				args->v0.platform = NV_DEVICE_INFO_V0_PCI;
		} else {
			args->v0.platform = NV_DEVICE_INFO_V0_SOC;
		}
		break;
	}

	switch (device->card_type) {
	case NV_04: args->v0.family = NV_DEVICE_INFO_V0_TNT; break;
	case NV_10:
	case NV_11: args->v0.family = NV_DEVICE_INFO_V0_CELSIUS; break;
	case NV_20: args->v0.family = NV_DEVICE_INFO_V0_KELVIN; break;
	case NV_30: args->v0.family = NV_DEVICE_INFO_V0_RANKINE; break;
	case NV_40: args->v0.family = NV_DEVICE_INFO_V0_CURIE; break;
	case NV_50: args->v0.family = NV_DEVICE_INFO_V0_TESLA; break;
	case NV_C0: args->v0.family = NV_DEVICE_INFO_V0_FERMI; break;
	case NV_E0: args->v0.family = NV_DEVICE_INFO_V0_KEPLER; break;
	case GM100: args->v0.family = NV_DEVICE_INFO_V0_MAXWELL; break;
	default:
		args->v0.family = 0;
		break;
	}

	args->v0.chipset  = device->chipset;
	args->v0.revision = device->chiprev;
	if (fb && fb->ram)
		args->v0.ram_size = args->v0.ram_user = fb->ram->size;
	else
		args->v0.ram_size = args->v0.ram_user = 0;
	if (imem && args->v0.ram_size > 0)
		args->v0.ram_user = args->v0.ram_user - imem->reserved;

	strncpy(args->v0.chip, device->chip->name, sizeof(args->v0.chip));
	strncpy(args->v0.name, device->name, sizeof(args->v0.name));
	return 0;
}

static int
nvkm_udevice_time(struct nvkm_udevice *udev, void *data, u32 size)
{
	struct nvkm_device *device = udev->device;
	union {
		struct nv_device_time_v0 v0;
	} *args = data;
	int ret;

	if (nvif_unpack(args->v0, 0, 0, false)) {
		args->v0.time = nvkm_timer_read(device->timer);
	}

	return ret;
}

static int
nvkm_udevice_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	switch (mthd) {
	case NV_DEVICE_V0_INFO:
		return nvkm_udevice_info(udev, data, size);
	case NV_DEVICE_V0_TIME:
		return nvkm_udevice_time(udev, data, size);
	default:
		break;
	}
	return -EINVAL;
}

static int
nvkm_udevice_rd08(struct nvkm_object *object, u64 addr, u8 *data)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	*data = nvkm_rd08(udev->device, addr);
	return 0;
}

static int
nvkm_udevice_rd16(struct nvkm_object *object, u64 addr, u16 *data)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	*data = nvkm_rd16(udev->device, addr);
	return 0;
}

static int
nvkm_udevice_rd32(struct nvkm_object *object, u64 addr, u32 *data)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	*data = nvkm_rd32(udev->device, addr);
	return 0;
}

static int
nvkm_udevice_wr08(struct nvkm_object *object, u64 addr, u8 data)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	nvkm_wr08(udev->device, addr, data);
	return 0;
}

static int
nvkm_udevice_wr16(struct nvkm_object *object, u64 addr, u16 data)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	nvkm_wr16(udev->device, addr, data);
	return 0;
}

static int
nvkm_udevice_wr32(struct nvkm_object *object, u64 addr, u32 data)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	nvkm_wr32(udev->device, addr, data);
	return 0;
}

static int
nvkm_udevice_map(struct nvkm_object *object, u64 *addr, u32 *size)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	struct nvkm_device *device = udev->device;
	*addr = nv_device_resource_start(device, 0);
	*size = nv_device_resource_len(device, 0);
	return 0;
}

static int
nvkm_udevice_fini(struct nvkm_object *object, bool suspend)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	struct nvkm_device *device = udev->device;
	int ret = 0;

	mutex_lock(&device->mutex);
	if (!--device->refcount) {
		ret = nvkm_device_fini(device, suspend);
		if (ret && suspend) {
			device->refcount++;
			goto done;
		}
	}

done:
	mutex_unlock(&device->mutex);
	return ret;
}

static int
nvkm_udevice_init(struct nvkm_object *object)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	struct nvkm_device *device = udev->device;
	int ret = 0;

	mutex_lock(&device->mutex);
	if (!device->refcount++) {
		ret = nvkm_device_init(device);
		if (ret) {
			device->refcount--;
			goto done;
		}
	}

done:
	mutex_unlock(&device->mutex);
	return ret;
}

static int
nvkm_udevice_child_new(const struct nvkm_oclass *oclass,
		       void *data, u32 size, struct nvkm_object **pobject)
{
	struct nvkm_udevice *udev = nvkm_udevice(oclass->parent);
	const struct nvkm_device_oclass *sclass = oclass->priv;
	return sclass->ctor(udev->device, oclass, data, size, pobject);
}

static int
nvkm_udevice_child_get(struct nvkm_object *object, int index,
		       struct nvkm_oclass *oclass)
{
	struct nvkm_udevice *udev = nvkm_udevice(object);
	struct nvkm_device *device = udev->device;
	struct nvkm_engine *engine;
	u64 mask = (1ULL << NVDEV_ENGINE_DMAOBJ) |
		   (1ULL << NVDEV_ENGINE_FIFO) |
		   (1ULL << NVDEV_ENGINE_DISP) |
		   (1ULL << NVDEV_ENGINE_PM);
	const struct nvkm_device_oclass *sclass = NULL;
	int i;

	for (; i = __ffs64(mask), mask && !sclass; mask &= ~(1ULL << i)) {
		if (!(engine = nvkm_device_engine(device, i)) ||
		    !(engine->func->base.sclass))
			continue;
		oclass->engine = engine;

		index -= engine->func->base.sclass(oclass, index, &sclass);
	}

	if (!sclass) {
		switch (index) {
		case 0: sclass = &nvkm_control_oclass; break;
		default:
			return -EINVAL;
		}
		oclass->base = sclass->base;
	}

	oclass->ctor = nvkm_udevice_child_new;
	oclass->priv = sclass;
	return 0;
}

static const struct nvkm_object_func
nvkm_udevice_super = {
	.init = nvkm_udevice_init,
	.fini = nvkm_udevice_fini,
	.mthd = nvkm_udevice_mthd,
	.map = nvkm_udevice_map,
	.rd08 = nvkm_udevice_rd08,
	.rd16 = nvkm_udevice_rd16,
	.rd32 = nvkm_udevice_rd32,
	.wr08 = nvkm_udevice_wr08,
	.wr16 = nvkm_udevice_wr16,
	.wr32 = nvkm_udevice_wr32,
	.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,
};

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;

	nvif_ioctl(parent, "create device size %d\n", size);
	if (nvif_unpack(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 (client->super)
		func = &nvkm_udevice_super;
	else
		func = &nvkm_udevice;

	if (!(udev = kzalloc(sizeof(*udev), GFP_KERNEL)))
		return -ENOMEM;
	nvkm_object_ctor(func, 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;

	return 0;
}

const struct nvkm_sclass
nvkm_udevice_sclass = {
	.oclass = NV_DEVICE,
	.minver = 0,
	.maxver = 0,
	.ctor = nvkm_udevice_new,
};
Commit	Line	Data
a1bfb29a BS	1	/*
	2	* Copyright 2012 Red Hat Inc.
	3	*
	4	* Permission is hereby granted, free of charge, to any person obtaining a
	5	* copy of this software and associated documentation files (the "Software"),
	6	* to deal in the Software without restriction, including without limitation
	7	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	8	* and/or sell copies of the Software, and to permit persons to whom the
	9	* Software is furnished to do so, subject to the following conditions:
	10	*
	11	* The above copyright notice and this permission notice shall be included in
	12	* all copies or substantial portions of the Software.
	13	*
	14	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	15	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	16	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	17	* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
	18	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	19	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
	20	* OTHER DEALINGS IN THE SOFTWARE.
	21	*
	22	* Authors: Ben Skeggs
	23	*/
2a9f847f	24	#define nvkm_udevice(p) container_of((p), struct nvkm_udevice, object)
a1bfb29a	25	#include "priv.h"
0e29998a	26	#include "ctrl.h"
a1bfb29a BS	27
	28	#include <core/client.h>
	29	#include <subdev/fb.h>
	30	#include <subdev/instmem.h>
d61f4c17	31	#include <subdev/timer.h>
a1bfb29a BS	32
	33	#include <nvif/class.h>
	34	#include <nvif/unpack.h>
	35
	36	struct nvkm_udevice {
2a9f847f	37	struct nvkm_object object;
a1bfb29a BS	38	struct nvkm_device *device;
	39	};
	40
	41	static int
2a9f847f	42	nvkm_udevice_info(struct nvkm_udevice udev, void data, u32 size)
a1bfb29a	43	{
2a9f847f	44	struct nvkm_object *object = &udev->object;
a1bfb29a BS	45	struct nvkm_device *device = udev->device;
	46	struct nvkm_fb *fb = device->fb;
	47	struct nvkm_instmem *imem = device->imem;
	48	union {
	49	struct nv_device_info_v0 v0;
	50	} *args = data;
	51	int ret;
	52
	53	nvif_ioctl(object, "device info size %d\n", size);
	54	if (nvif_unpack(args->v0, 0, 0, false)) {
	55	nvif_ioctl(object, "device info vers %d\n", args->v0.version);
	56	} else
	57	return ret;
	58
	59	switch (device->chipset) {
	60	case 0x01a:
	61	case 0x01f:
	62	case 0x04c:
	63	case 0x04e:
	64	case 0x063:
	65	case 0x067:
	66	case 0x068:
	67	case 0x0aa:
	68	case 0x0ac:
	69	case 0x0af:
	70	args->v0.platform = NV_DEVICE_INFO_V0_IGP;
	71	break;
	72	default:
	73	if (device->pdev) {
	74	if (pci_find_capability(device->pdev, PCI_CAP_ID_AGP))
	75	args->v0.platform = NV_DEVICE_INFO_V0_AGP;
	76	else
	77	if (pci_is_pcie(device->pdev))
	78	args->v0.platform = NV_DEVICE_INFO_V0_PCIE;
	79	else
	80	args->v0.platform = NV_DEVICE_INFO_V0_PCI;
	81	} else {
	82	args->v0.platform = NV_DEVICE_INFO_V0_SOC;
	83	}
	84	break;
	85	}
	86
	87	switch (device->card_type) {
	88	case NV_04: args->v0.family = NV_DEVICE_INFO_V0_TNT; break;
	89	case NV_10:
	90	case NV_11: args->v0.family = NV_DEVICE_INFO_V0_CELSIUS; break;
	91	case NV_20: args->v0.family = NV_DEVICE_INFO_V0_KELVIN; break;
	92	case NV_30: args->v0.family = NV_DEVICE_INFO_V0_RANKINE; break;
	93	case NV_40: args->v0.family = NV_DEVICE_INFO_V0_CURIE; break;
	94	case NV_50: args->v0.family = NV_DEVICE_INFO_V0_TESLA; break;
	95	case NV_C0: args->v0.family = NV_DEVICE_INFO_V0_FERMI; break;
	96	case NV_E0: args->v0.family = NV_DEVICE_INFO_V0_KEPLER; break;
	97	case GM100: args->v0.family = NV_DEVICE_INFO_V0_MAXWELL; break;
	98	default:
	99	args->v0.family = 0;
	100	break;
	101	}
	102
	103	args->v0.chipset = device->chipset;
	104	args->v0.revision = device->chiprev;
	105	if (fb && fb->ram)
	106	args->v0.ram_size = args->v0.ram_user = fb->ram->size;
	107	else
	108	args->v0.ram_size = args->v0.ram_user = 0;
109	if (imem && args->v0.ram_size > 0)
110	args->v0.ram_user = args->v0.ram_user - imem->reserved;
111
6cf813fb BS	112	strncpy(args->v0.chip, device->chip->name, sizeof(args->v0.chip));
6cf813fb BS	113	strncpy(args->v0.name, device->name, sizeof(args->v0.name));
a1bfb29a BS	114	return 0;
	115	}
	116
d61f4c17	117	static int
2a9f847f	118	nvkm_udevice_time(struct nvkm_udevice udev, void data, u32 size)
d61f4c17	119	{
d61f4c17	120	struct nvkm_device *device = udev->device;
d61f4c17 BS	121	union {
	122	struct nv_device_time_v0 v0;
	123	} *args = data;
	124	int ret;
	125
	126	if (nvif_unpack(args->v0, 0, 0, false)) {
31649ecf	127	args->v0.time = nvkm_timer_read(device->timer);
d61f4c17 BS	128	}
	129
	130	return ret;
	131	}
	132
a1bfb29a BS	133	static int
	134	nvkm_udevice_mthd(struct nvkm_object object, u32 mthd, void data, u32 size)
	135	{
2a9f847f	136	struct nvkm_udevice *udev = nvkm_udevice(object);
a1bfb29a BS	137	switch (mthd) {
a1bfb29a BS	138	case NV_DEVICE_V0_INFO:
2a9f847f	139	return nvkm_udevice_info(udev, data, size);
d61f4c17	140	case NV_DEVICE_V0_TIME:
2a9f847f	141	return nvkm_udevice_time(udev, data, size);
a1bfb29a BS	142	default:
	143	break;
	144	}
	145	return -EINVAL;
	146	}
	147
2a9f847f BS	148	static int
2a9f847f BS	149	nvkm_udevice_rd08(struct nvkm_object object, u64 addr, u8 data)
a1bfb29a	150	{
2a9f847f BS	151	struct nvkm_udevice *udev = nvkm_udevice(object);
	152	*data = nvkm_rd08(udev->device, addr);
	153	return 0;
a1bfb29a BS	154	}
a1bfb29a BS	155
2a9f847f BS	156	static int
2a9f847f BS	157	nvkm_udevice_rd16(struct nvkm_object object, u64 addr, u16 data)
a1bfb29a	158	{
2a9f847f BS	159	struct nvkm_udevice *udev = nvkm_udevice(object);
	160	*data = nvkm_rd16(udev->device, addr);
	161	return 0;
a1bfb29a BS	162	}
a1bfb29a BS	163
2a9f847f BS	164	static int
2a9f847f BS	165	nvkm_udevice_rd32(struct nvkm_object object, u64 addr, u32 data)
a1bfb29a	166	{
2a9f847f BS	167	struct nvkm_udevice *udev = nvkm_udevice(object);
	168	*data = nvkm_rd32(udev->device, addr);
	169	return 0;
a1bfb29a BS	170	}
a1bfb29a BS	171
2a9f847f	172	static int
a1bfb29a BS	173	nvkm_udevice_wr08(struct nvkm_object *object, u64 addr, u8 data)
a1bfb29a BS	174	{
2a9f847f	175	struct nvkm_udevice *udev = nvkm_udevice(object);
a1bfb29a	176	nvkm_wr08(udev->device, addr, data);
2a9f847f	177	return 0;
a1bfb29a BS	178	}
a1bfb29a BS	179
2a9f847f	180	static int
a1bfb29a BS	181	nvkm_udevice_wr16(struct nvkm_object *object, u64 addr, u16 data)
a1bfb29a BS	182	{
2a9f847f	183	struct nvkm_udevice *udev = nvkm_udevice(object);
a1bfb29a	184	nvkm_wr16(udev->device, addr, data);
2a9f847f	185	return 0;
a1bfb29a BS	186	}
a1bfb29a BS	187
2a9f847f	188	static int
a1bfb29a BS	189	nvkm_udevice_wr32(struct nvkm_object *object, u64 addr, u32 data)
a1bfb29a BS	190	{
2a9f847f	191	struct nvkm_udevice *udev = nvkm_udevice(object);
a1bfb29a	192	nvkm_wr32(udev->device, addr, data);
2a9f847f	193	return 0;
a1bfb29a BS	194	}
	195
	196	static int
	197	nvkm_udevice_map(struct nvkm_object object, u64 addr, u32 *size)
	198	{
2a9f847f	199	struct nvkm_udevice *udev = nvkm_udevice(object);
a1bfb29a BS	200	struct nvkm_device *device = udev->device;
	201	*addr = nv_device_resource_start(device, 0);
	202	*size = nv_device_resource_len(device, 0);
	203	return 0;
	204	}
	205
a1e88736 BS	206	static int
	207	nvkm_udevice_fini(struct nvkm_object *object, bool suspend)
	208	{
2a9f847f	209	struct nvkm_udevice *udev = nvkm_udevice(object);
a1e88736 BS	210	struct nvkm_device *device = udev->device;
	211	int ret = 0;
	212
	213	mutex_lock(&device->mutex);
	214	if (!--device->refcount) {
	215	ret = nvkm_device_fini(device, suspend);
	216	if (ret && suspend) {
	217	device->refcount++;
	218	goto done;
	219	}
	220	}
	221
	222	done:
	223	mutex_unlock(&device->mutex);
	224	return ret;
	225	}
	226
	227	static int
	228	nvkm_udevice_init(struct nvkm_object *object)
	229	{
2a9f847f	230	struct nvkm_udevice *udev = nvkm_udevice(object);
a1e88736 BS	231	struct nvkm_device *device = udev->device;
	232	int ret = 0;
	233
	234	mutex_lock(&device->mutex);
	235	if (!device->refcount++) {
	236	ret = nvkm_device_init(device);
	237	if (ret) {
	238	device->refcount--;
	239	goto done;
	240	}
	241	}
	242
	243	done:
	244	mutex_unlock(&device->mutex);
	245	return ret;
	246	}
	247
a1bfb29a	248	static int
2a9f847f BS	249	nvkm_udevice_child_new(const struct nvkm_oclass *oclass,
	250	void data, u32 size, struct nvkm_object *pobject)
	251	{
	252	struct nvkm_udevice *udev = nvkm_udevice(oclass->parent);
0e29998a BS	253	const struct nvkm_device_oclass *sclass = oclass->priv;
0e29998a BS	254	return sclass->ctor(udev->device, oclass, data, size, pobject);
2a9f847f BS	255	}
	256
	257	static int
	258	nvkm_udevice_child_get(struct nvkm_object *object, int index,
	259	struct nvkm_oclass *oclass)
	260	{
	261	struct nvkm_udevice *udev = nvkm_udevice(object);
	262	struct nvkm_device *device = udev->device;
	263	struct nvkm_engine *engine;
	264	u64 mask = (1ULL << NVDEV_ENGINE_DMAOBJ) \|
	265	(1ULL << NVDEV_ENGINE_FIFO) \|
	266	(1ULL << NVDEV_ENGINE_DISP) \|
	267	(1ULL << NVDEV_ENGINE_PM);
0710cc31	268	const struct nvkm_device_oclass *sclass = NULL;
2a9f847f BS	269	int i;
2a9f847f BS	270
0710cc31	271	for (; i = __ffs64(mask), mask && !sclass; mask &= ~(1ULL << i)) {
0710cc31 BS	272	if (!(engine = nvkm_device_engine(device, i)) \|\|
	273	!(engine->func->base.sclass))
	274	continue;
	275	oclass->engine = engine;
	276
	277	index -= engine->func->base.sclass(oclass, index, &sclass);
2a9f847f BS	278	}
2a9f847f BS	279
0710cc31 BS	280	if (!sclass) {
	281	switch (index) {
	282	case 0: sclass = &nvkm_control_oclass; break;
	283	default:
	284	return -EINVAL;
	285	}
	286	oclass->base = sclass->base;
2a9f847f BS	287	}
2a9f847f BS	288
0e29998a	289	oclass->ctor = nvkm_udevice_child_new;
0e29998a BS	290	oclass->priv = sclass;
0e29998a BS	291	return 0;
2a9f847f BS	292	}
	293
	294	static const struct nvkm_object_func
	295	nvkm_udevice_super = {
	296	.init = nvkm_udevice_init,
	297	.fini = nvkm_udevice_fini,
	298	.mthd = nvkm_udevice_mthd,
	299	.map = nvkm_udevice_map,
	300	.rd08 = nvkm_udevice_rd08,
	301	.rd16 = nvkm_udevice_rd16,
	302	.rd32 = nvkm_udevice_rd32,
	303	.wr08 = nvkm_udevice_wr08,
	304	.wr16 = nvkm_udevice_wr16,
	305	.wr32 = nvkm_udevice_wr32,
	306	.sclass = nvkm_udevice_child_get,
	307	};
	308
	309	static const struct nvkm_object_func
	310	nvkm_udevice = {
	311	.init = nvkm_udevice_init,
	312	.fini = nvkm_udevice_fini,
	313	.mthd = nvkm_udevice_mthd,
	314	.sclass = nvkm_udevice_child_get,
	315	};
	316
	317	int
	318	nvkm_udevice_new(const struct nvkm_oclass oclass, void data, u32 size,
a1bfb29a BS	319	struct nvkm_object **pobject)
	320	{
	321	union {
	322	struct nv_device_v0 v0;
	323	} *args = data;
2a9f847f BS	324	struct nvkm_client *client = oclass->client;
	325	struct nvkm_object *parent = &client->object;
	326	const struct nvkm_object_func *func;
a1bfb29a BS	327	struct nvkm_udevice *udev;
	328	int ret;
	329
	330	nvif_ioctl(parent, "create device size %d\n", size);
	331	if (nvif_unpack(args->v0, 0, 0, false)) {
	332	nvif_ioctl(parent, "create device v%d device %016llx\n",
	333	args->v0.version, args->v0.device);
	334	} else
	335	return ret;
	336
	337	/* give priviledged clients register access */
	338	if (client->super)
2a9f847f BS	339	func = &nvkm_udevice_super;
	340	else
	341	func = &nvkm_udevice;
a1bfb29a	342
2a9f847f BS	343	if (!(udev = kzalloc(sizeof(*udev), GFP_KERNEL)))
	344	return -ENOMEM;
	345	nvkm_object_ctor(func, oclass, &udev->object);
	346	*pobject = &udev->object;
	347
	348	/* find the device that matches what the client requested */
4e7e62d6	349	if (args->v0.device != ~0)
2a9f847f	350	udev->device = nvkm_device_find(args->v0.device);
4e7e62d6	351	else
2a9f847f BS	352	udev->device = nvkm_device_find(client->device);
2a9f847f BS	353	if (!udev->device)
4e7e62d6	354	return -ENODEV;
a1bfb29a	355
a1bfb29a BS	356	return 0;
	357	}
	358
2a9f847f BS	359	const struct nvkm_sclass
	360	nvkm_udevice_sclass = {
	361	.oclass = NV_DEVICE,
	362	.minver = 0,
	363	.maxver = 0,
	364	.ctor = nvkm_udevice_new,
a1bfb29a	365	};