client.c

  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 */
 24#include <core/client.h>
 25#include <core/device.h>
 26#include <core/option.h>
 27
 28#include <nvif/class.h>
 29#include <nvif/event.h>
 30#include <nvif/if0000.h>
 31#include <nvif/unpack.h>
 32
 33static int
 34nvkm_uclient_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
 35		 struct nvkm_object **pobject)
 36{
 37	union {
 38		struct nvif_client_v0 v0;
 39	} *args = argv;
 40	struct nvkm_client *client;
 41	int ret = -ENOSYS;
 42
 43	if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))){
 44		args->v0.name[sizeof(args->v0.name) - 1] = 0;
 45		ret = nvkm_client_new(args->v0.name, oclass->client->device, NULL,
 46				      NULL, oclass->client->event, &client);
 47		if (ret)
 48			return ret;
 49	} else
 50		return ret;
 51
 52	client->object.client = oclass->client;
 53	client->object.handle = oclass->handle;
 54	client->object.object = oclass->object;
 55	client->debug = oclass->client->debug;
 56	*pobject = &client->object;
 57	return 0;
 58}
 59
 60static const struct nvkm_sclass
 61nvkm_uclient_sclass = {
 62	.oclass = NVIF_CLASS_CLIENT,
 63	.minver = 0,
 64	.maxver = 0,
 65	.ctor = nvkm_uclient_new,
 66};
 67
 68static int
 69nvkm_client_child_new(const struct nvkm_oclass *oclass,
 70		      void *data, u32 size, struct nvkm_object **pobject)
 71{
 72	return oclass->base.ctor(oclass, data, size, pobject);
 73}
 74
 75static int
 76nvkm_client_child_get(struct nvkm_object *object, int index,
 77		      struct nvkm_oclass *oclass)
 78{
 79	const struct nvkm_sclass *sclass;
 80
 81	switch (index) {
 82	case 0: sclass = &nvkm_uclient_sclass; break;
 83	case 1: sclass = &nvkm_udevice_sclass; break;
 84	default:
 85		return -EINVAL;
 86	}
 87
 88	oclass->ctor = nvkm_client_child_new;
 89	oclass->base = *sclass;
 90	return 0;
 91}
 92
 93static void *
 94nvkm_client_dtor(struct nvkm_object *object)
 95{
 96	return nvkm_client(object);
 97}
 98
 99static const struct nvkm_object_func
100nvkm_client = {
101	.dtor = nvkm_client_dtor,
102	.sclass = nvkm_client_child_get,
103};
104
105int
106nvkm_client_new(const char *name, u64 device, const char *cfg, const char *dbg,
107		int (*event)(u64, void *, u32), struct nvkm_client **pclient)
108{
109	struct nvkm_oclass oclass = { .base = nvkm_uclient_sclass };
110	struct nvkm_client *client;
111
112	if (!(client = *pclient = kzalloc(sizeof(*client), GFP_KERNEL)))
113		return -ENOMEM;
114	oclass.client = client;
115
116	nvkm_object_ctor(&nvkm_client, &oclass, &client->object);
117	snprintf(client->name, sizeof(client->name), "%s", name);
118	client->device = device;
119	client->debug = nvkm_dbgopt(dbg, "CLIENT");
120	client->objroot = RB_ROOT;
121	spin_lock_init(&client->obj_lock);
122	client->event = event;
123	INIT_LIST_HEAD(&client->umem);
124	spin_lock_init(&client->lock);
125	return 0;
126}