[deliverable/linux.git] / drivers / gpu / drm / nouveau / nvkm / core / client.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
 */
#include <core/client.h>
#include <core/device.h>
#include <core/notify.h>
#include <core/option.h>

#include <nvif/class.h>
#include <nvif/event.h>
#include <nvif/if0000.h>
#include <nvif/unpack.h>

struct nvkm_client_notify {
	struct nvkm_client *client;
	struct nvkm_notify n;
	u8 version;
	u8 size;
	union {
		struct nvif_notify_rep_v0 v0;
	} rep;
};

static int
nvkm_client_notify(struct nvkm_notify *n)
{
	struct nvkm_client_notify *notify = container_of(n, typeof(*notify), n);
	struct nvkm_client *client = notify->client;
	return client->ntfy(&notify->rep, notify->size, n->data, n->size);
}

int
nvkm_client_notify_put(struct nvkm_client *client, int index)
{
	if (index < ARRAY_SIZE(client->notify)) {
		if (client->notify[index]) {
			nvkm_notify_put(&client->notify[index]->n);
			return 0;
		}
	}
	return -ENOENT;
}

int
nvkm_client_notify_get(struct nvkm_client *client, int index)
{
	if (index < ARRAY_SIZE(client->notify)) {
		if (client->notify[index]) {
			nvkm_notify_get(&client->notify[index]->n);
			return 0;
		}
	}
	return -ENOENT;
}

int
nvkm_client_notify_del(struct nvkm_client *client, int index)
{
	if (index < ARRAY_SIZE(client->notify)) {
		if (client->notify[index]) {
			nvkm_notify_fini(&client->notify[index]->n);
			kfree(client->notify[index]);
			client->notify[index] = NULL;
			return 0;
		}
	}
	return -ENOENT;
}

int
nvkm_client_notify_new(struct nvkm_object *object,
		       struct nvkm_event *event, void *data, u32 size)
{
	struct nvkm_client *client = object->client;
	struct nvkm_client_notify *notify;
	union {
		struct nvif_notify_req_v0 v0;
	} *req = data;
	u8  index, reply;
	int ret = -ENOSYS;

	for (index = 0; index < ARRAY_SIZE(client->notify); index++) {
		if (!client->notify[index])
			break;
	}

	if (index == ARRAY_SIZE(client->notify))
		return -ENOSPC;

	notify = kzalloc(sizeof(*notify), GFP_KERNEL);
	if (!notify)
		return -ENOMEM;

	nvif_ioctl(object, "notify new size %d\n", size);
	if (!(ret = nvif_unpack(ret, &data, &size, req->v0, 0, 0, true))) {
		nvif_ioctl(object, "notify new vers %d reply %d route %02x "
				   "token %llx\n", req->v0.version,
			   req->v0.reply, req->v0.route, req->v0.token);
		notify->version = req->v0.version;
		notify->size = sizeof(notify->rep.v0);
		notify->rep.v0.version = req->v0.version;
		notify->rep.v0.route = req->v0.route;
		notify->rep.v0.token = req->v0.token;
		reply = req->v0.reply;
	}

	if (ret == 0) {
		ret = nvkm_notify_init(object, event, nvkm_client_notify,
				       false, data, size, reply, &notify->n);
		if (ret == 0) {
			client->notify[index] = notify;
			notify->client = client;
			return index;
		}
	}

	kfree(notify);
	return ret;
}

static int
nvkm_client_mthd_devlist(struct nvkm_object *object, void *data, u32 size)
{
	union {
		struct nv_client_devlist_v0 v0;
	} *args = data;
	int ret = -ENOSYS;

	nvif_ioctl(object, "client devlist size %d\n", size);
	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
		nvif_ioctl(object, "client devlist vers %d count %d\n",
			   args->v0.version, args->v0.count);
		if (size == sizeof(args->v0.device[0]) * args->v0.count) {
			ret = nvkm_device_list(args->v0.device, args->v0.count);
			if (ret >= 0) {
				args->v0.count = ret;
				ret = 0;
			}
		} else {
			ret = -EINVAL;
		}
	}

	return ret;
}

static int
nvkm_client_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size)
{
	switch (mthd) {
	case NV_CLIENT_DEVLIST:
		return nvkm_client_mthd_devlist(object, data, size);
	default:
		break;
	}
	return -EINVAL;
}

static int
nvkm_client_child_new(const struct nvkm_oclass *oclass,
		      void *data, u32 size, struct nvkm_object **pobject)
{
	return oclass->base.ctor(oclass, data, size, pobject);
}

static int
nvkm_client_child_get(struct nvkm_object *object, int index,
		      struct nvkm_oclass *oclass)
{
	const struct nvkm_sclass *sclass;

	switch (index) {
	case 0: sclass = &nvkm_udevice_sclass; break;
	default:
		return -EINVAL;
	}

	oclass->ctor = nvkm_client_child_new;
	oclass->base = *sclass;
	return 0;
}

static const struct nvkm_object_func
nvkm_client_object_func = {
	.mthd = nvkm_client_mthd,
	.sclass = nvkm_client_child_get,
};

void
nvkm_client_remove(struct nvkm_client *client, struct nvkm_object *object)
{
	if (!RB_EMPTY_NODE(&object->node))
		rb_erase(&object->node, &client->objroot);
}

bool
nvkm_client_insert(struct nvkm_client *client, struct nvkm_object *object)
{
	struct rb_node **ptr = &client->objroot.rb_node;
	struct rb_node *parent = NULL;

	while (*ptr) {
		struct nvkm_object *this =
			container_of(*ptr, typeof(*this), node);
		parent = *ptr;
		if (object->object < this->object)
			ptr = &parent->rb_left;
		else
		if (object->object > this->object)
			ptr = &parent->rb_right;
		else
			return false;
	}

	rb_link_node(&object->node, parent, ptr);
	rb_insert_color(&object->node, &client->objroot);
	return true;
}

struct nvkm_object *
nvkm_client_search(struct nvkm_client *client, u64 handle)
{
	struct rb_node *node = client->objroot.rb_node;
	while (node) {
		struct nvkm_object *object =
			container_of(node, typeof(*object), node);
		if (handle < object->object)
			node = node->rb_left;
		else
		if (handle > object->object)
			node = node->rb_right;
		else
			return object;
	}
	return NULL;
}

int
nvkm_client_fini(struct nvkm_client *client, bool suspend)
{
	struct nvkm_object *object = &client->object;
	const char *name[2] = { "fini", "suspend" };
	int i;
	nvif_debug(object, "%s notify\n", name[suspend]);
	for (i = 0; i < ARRAY_SIZE(client->notify); i++)
		nvkm_client_notify_put(client, i);
	return nvkm_object_fini(&client->object, suspend);
}

int
nvkm_client_init(struct nvkm_client *client)
{
	return nvkm_object_init(&client->object);
}

void
nvkm_client_del(struct nvkm_client **pclient)
{
	struct nvkm_client *client = *pclient;
	int i;
	if (client) {
		nvkm_client_fini(client, false);
		for (i = 0; i < ARRAY_SIZE(client->notify); i++)
			nvkm_client_notify_del(client, i);
		nvkm_object_dtor(&client->object);
		kfree(*pclient);
		*pclient = NULL;
	}
}

int
nvkm_client_new(const char *name, u64 device, const char *cfg,
		const char *dbg, struct nvkm_client **pclient)
{
	struct nvkm_oclass oclass = {};
	struct nvkm_client *client;

	if (!(client = *pclient = kzalloc(sizeof(*client), GFP_KERNEL)))
		return -ENOMEM;
	oclass.client = client;

	nvkm_object_ctor(&nvkm_client_object_func, &oclass, &client->object);
	snprintf(client->name, sizeof(client->name), "%s", name);
	client->device = device;
	client->debug = nvkm_dbgopt(dbg, "CLIENT");
	client->objroot = RB_ROOT;
	client->dmaroot = RB_ROOT;
	return 0;
}
Commit	Line	Data
9274f4a9 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	*/
9274f4a9	24	#include <core/client.h>
5025407b	25	#include <core/device.h>
5025407b	26	#include <core/notify.h>
9274f4a9 BS	27	#include <core/option.h>
9274f4a9 BS	28
5025407b	29	#include <nvif/class.h>
8ec2a6ec	30	#include <nvif/event.h>
13db6d6e	31	#include <nvif/if0000.h>
5025407b	32	#include <nvif/unpack.h>
9274f4a9	33
8ec2a6ec	34	struct nvkm_client_notify {
5025407b	35	struct nvkm_client *client;
8ec2a6ec BS	36	struct nvkm_notify n;
	37	u8 version;
	38	u8 size;
	39	union {
	40	struct nvif_notify_rep_v0 v0;
	41	} rep;
	42	};
	43
	44	static int
	45	nvkm_client_notify(struct nvkm_notify *n)
	46	{
	47	struct nvkm_client_notify notify = container_of(n, typeof(notify), n);
5025407b	48	struct nvkm_client *client = notify->client;
8ec2a6ec BS	49	return client->ntfy(&notify->rep, notify->size, n->data, n->size);
	50	}
	51
	52	int
5025407b	53	nvkm_client_notify_put(struct nvkm_client *client, int index)
8ec2a6ec BS	54	{
	55	if (index < ARRAY_SIZE(client->notify)) {
	56	if (client->notify[index]) {
	57	nvkm_notify_put(&client->notify[index]->n);
	58	return 0;
	59	}
	60	}
	61	return -ENOENT;
	62	}
	63
	64	int
5025407b	65	nvkm_client_notify_get(struct nvkm_client *client, int index)
8ec2a6ec BS	66	{
	67	if (index < ARRAY_SIZE(client->notify)) {
	68	if (client->notify[index]) {
	69	nvkm_notify_get(&client->notify[index]->n);
	70	return 0;
	71	}
	72	}
	73	return -ENOENT;
	74	}
	75
	76	int
5025407b	77	nvkm_client_notify_del(struct nvkm_client *client, int index)
8ec2a6ec BS	78	{
	79	if (index < ARRAY_SIZE(client->notify)) {
	80	if (client->notify[index]) {
	81	nvkm_notify_fini(&client->notify[index]->n);
	82	kfree(client->notify[index]);
	83	client->notify[index] = NULL;
	84	return 0;
	85	}
	86	}
	87	return -ENOENT;
	88	}
	89
	90	int
5025407b	91	nvkm_client_notify_new(struct nvkm_object *object,
8ec2a6ec BS	92	struct nvkm_event event, void data, u32 size)
8ec2a6ec BS	93	{
fbd58ebd	94	struct nvkm_client *client = object->client;
8ec2a6ec BS	95	struct nvkm_client_notify *notify;
	96	union {
	97	struct nvif_notify_req_v0 v0;
	98	} *req = data;
	99	u8 index, reply;
f01c4e68	100	int ret = -ENOSYS;
8ec2a6ec BS	101
	102	for (index = 0; index < ARRAY_SIZE(client->notify); index++) {
	103	if (!client->notify[index])
	104	break;
	105	}
	106
	107	if (index == ARRAY_SIZE(client->notify))
	108	return -ENOSPC;
	109
	110	notify = kzalloc(sizeof(*notify), GFP_KERNEL);
	111	if (!notify)
	112	return -ENOMEM;
	113
53003941	114	nvif_ioctl(object, "notify new size %d\n", size);
f01c4e68	115	if (!(ret = nvif_unpack(ret, &data, &size, req->v0, 0, 0, true))) {
53003941 BS	116	nvif_ioctl(object, "notify new vers %d reply %d route %02x "
	117	"token %llx\n", req->v0.version,
	118	req->v0.reply, req->v0.route, req->v0.token);
8ec2a6ec BS	119	notify->version = req->v0.version;
	120	notify->size = sizeof(notify->rep.v0);
	121	notify->rep.v0.version = req->v0.version;
	122	notify->rep.v0.route = req->v0.route;
	123	notify->rep.v0.token = req->v0.token;
	124	reply = req->v0.reply;
	125	}
	126
	127	if (ret == 0) {
996f5a08 BS	128	ret = nvkm_notify_init(object, event, nvkm_client_notify,
996f5a08 BS	129	false, data, size, reply, &notify->n);
8ec2a6ec BS	130	if (ret == 0) {
	131	client->notify[index] = notify;
	132	notify->client = client;
7caa63c0	133	return index;
8ec2a6ec BS	134	}
	135	}
	136
	137	kfree(notify);
7caa63c0	138	return ret;
8ec2a6ec BS	139	}
8ec2a6ec BS	140
803c1787	141	static int
5025407b	142	nvkm_client_mthd_devlist(struct nvkm_object object, void data, u32 size)
803c1787 BS	143	{
	144	union {
	145	struct nv_client_devlist_v0 v0;
	146	} *args = data;
f01c4e68	147	int ret = -ENOSYS;
803c1787	148
53003941	149	nvif_ioctl(object, "client devlist size %d\n", size);
f01c4e68	150	if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) {
53003941 BS	151	nvif_ioctl(object, "client devlist vers %d count %d\n",
53003941 BS	152	args->v0.version, args->v0.count);
803c1787	153	if (size == sizeof(args->v0.device[0]) * args->v0.count) {
5025407b	154	ret = nvkm_device_list(args->v0.device, args->v0.count);
803c1787 BS	155	if (ret >= 0) {
	156	args->v0.count = ret;
	157	ret = 0;
	158	}
	159	} else {
	160	ret = -EINVAL;
	161	}
	162	}
	163
	164	return ret;
	165	}
	166
	167	static int
5025407b	168	nvkm_client_mthd(struct nvkm_object object, u32 mthd, void data, u32 size)
803c1787 BS	169	{
	170	switch (mthd) {
	171	case NV_CLIENT_DEVLIST:
5025407b	172	return nvkm_client_mthd_devlist(object, data, size);
803c1787 BS	173	default:
	174	break;
	175	}
	176	return -EINVAL;
	177	}
	178
24bd0930 BS	179	static int
	180	nvkm_client_child_new(const struct nvkm_oclass *oclass,
	181	void data, u32 size, struct nvkm_object *pobject)
	182	{
2a9f847f	183	return oclass->base.ctor(oclass, data, size, pobject);
24bd0930 BS	184	}
	185
	186	static int
	187	nvkm_client_child_get(struct nvkm_object *object, int index,
	188	struct nvkm_oclass *oclass)
	189	{
2a9f847f BS	190	const struct nvkm_sclass *sclass;
	191
	192	switch (index) {
	193	case 0: sclass = &nvkm_udevice_sclass; break;
	194	default:
	195	return -EINVAL;
24bd0930	196	}
2a9f847f BS	197
	198	oclass->ctor = nvkm_client_child_new;
	199	oclass->base = *sclass;
	200	return 0;
24bd0930 BS	201	}
	202
	203	static const struct nvkm_object_func
	204	nvkm_client_object_func = {
	205	.mthd = nvkm_client_mthd,
	206	.sclass = nvkm_client_child_get,
9274f4a9 BS	207	};
9274f4a9 BS	208
bf81df9b	209	void
fbd58ebd	210	nvkm_client_remove(struct nvkm_client client, struct nvkm_object object)
bf81df9b	211	{
fbd58ebd BS	212	if (!RB_EMPTY_NODE(&object->node))
fbd58ebd BS	213	rb_erase(&object->node, &client->objroot);
bf81df9b BS	214	}
	215
	216	bool
fbd58ebd	217	nvkm_client_insert(struct nvkm_client client, struct nvkm_object object)
bf81df9b BS	218	{
	219	struct rb_node **ptr = &client->objroot.rb_node;
	220	struct rb_node *parent = NULL;
	221
	222	while (*ptr) {
fbd58ebd BS	223	struct nvkm_object *this =
fbd58ebd BS	224	container_of(ptr, typeof(this), node);
bf81df9b	225	parent = *ptr;
fbd58ebd	226	if (object->object < this->object)
bf81df9b BS	227	ptr = &parent->rb_left;
bf81df9b BS	228	else
fbd58ebd	229	if (object->object > this->object)
bf81df9b BS	230	ptr = &parent->rb_right;
	231	else
	232	return false;
	233	}
	234
fbd58ebd BS	235	rb_link_node(&object->node, parent, ptr);
fbd58ebd BS	236	rb_insert_color(&object->node, &client->objroot);
bf81df9b BS	237	return true;
	238	}
	239
fbd58ebd	240	struct nvkm_object *
bf81df9b BS	241	nvkm_client_search(struct nvkm_client *client, u64 handle)
	242	{
	243	struct rb_node *node = client->objroot.rb_node;
	244	while (node) {
fbd58ebd BS	245	struct nvkm_object *object =
	246	container_of(node, typeof(*object), node);
	247	if (handle < object->object)
bf81df9b BS	248	node = node->rb_left;
bf81df9b BS	249	else
fbd58ebd	250	if (handle > object->object)
bf81df9b BS	251	node = node->rb_right;
	252	else
	253	return object;
	254	}
	255	return NULL;
	256	}
	257
9274f4a9	258	int
76ecea5b BS	259	nvkm_client_fini(struct nvkm_client *client, bool suspend)
76ecea5b BS	260	{
24bd0930	261	struct nvkm_object *object = &client->object;
76ecea5b	262	const char *name[2] = { "fini", "suspend" };
fbd58ebd BS	263	int i;
fbd58ebd BS	264	nvif_debug(object, "%s notify\n", name[suspend]);
76ecea5b BS	265	for (i = 0; i < ARRAY_SIZE(client->notify); i++)
76ecea5b BS	266	nvkm_client_notify_put(client, i);
fbd58ebd	267	return nvkm_object_fini(&client->object, suspend);
76ecea5b BS	268	}
	269
	270	int
	271	nvkm_client_init(struct nvkm_client *client)
	272	{
fbd58ebd	273	return nvkm_object_init(&client->object);
76ecea5b BS	274	}
	275
	276	void
	277	nvkm_client_del(struct nvkm_client **pclient)
	278	{
	279	struct nvkm_client client = pclient;
	280	int i;
	281	if (client) {
	282	nvkm_client_fini(client, false);
	283	for (i = 0; i < ARRAY_SIZE(client->notify); i++)
	284	nvkm_client_notify_del(client, i);
fbd58ebd	285	nvkm_object_dtor(&client->object);
24bd0930	286	kfree(*pclient);
76ecea5b BS	287	*pclient = NULL;
	288	}
	289	}
	290
	291	int
4e7e62d6	292	nvkm_client_new(const char name, u64 device, const char cfg,
76ecea5b	293	const char dbg, struct nvkm_client *pclient)
9274f4a9	294	{
24bd0930	295	struct nvkm_oclass oclass = {};
5025407b	296	struct nvkm_client *client;
9274f4a9	297
24bd0930 BS	298	if (!(client = pclient = kzalloc(sizeof(client), GFP_KERNEL)))
	299	return -ENOMEM;
	300	oclass.client = client;
9274f4a9	301
24bd0930	302	nvkm_object_ctor(&nvkm_client_object_func, &oclass, &client->object);
fa6df8c1	303	snprintf(client->name, sizeof(client->name), "%s", name);
24bd0930	304	client->device = device;
5025407b	305	client->debug = nvkm_dbgopt(dbg, "CLIENT");
bf81df9b	306	client->objroot = RB_ROOT;
0710cc31	307	client->dmaroot = RB_ROOT;
fbd58ebd	308	return 0;
9274f4a9	309	}