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 33 static int 34 nvkm_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, args->v0.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.route = oclass->route; 55 client->object.token = oclass->token; 56 client->object.object = oclass->object; 57 client->debug = oclass->client->debug; 58 *pobject = &client->object; 59 return 0; 60 } 61 62 static const struct nvkm_sclass 63 nvkm_uclient_sclass = { 64 .oclass = NVIF_CLASS_CLIENT, 65 .minver = 0, 66 .maxver = 0, 67 .ctor = nvkm_uclient_new, 68 }; 69 70 static const struct nvkm_object_func nvkm_client; 71 struct nvkm_client * 72 nvkm_client_search(struct nvkm_client *client, u64 handle) 73 { 74 struct nvkm_object *object; 75 76 object = nvkm_object_search(client, handle, &nvkm_client); 77 if (IS_ERR(object)) 78 return (void *)object; 79 80 return nvkm_client(object); 81 } 82 83 static int 84 nvkm_client_mthd_devlist(struct nvkm_client *client, void *data, u32 size) 85 { 86 union { 87 struct nvif_client_devlist_v0 v0; 88 } *args = data; 89 int ret = -ENOSYS; 90 91 nvif_ioctl(&client->object, "client devlist size %d\n", size); 92 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, true))) { 93 nvif_ioctl(&client->object, "client devlist vers %d count %d\n", 94 args->v0.version, args->v0.count); 95 if (size == sizeof(args->v0.device[0]) * args->v0.count) { 96 ret = nvkm_device_list(args->v0.device, args->v0.count); 97 if (ret >= 0) { 98 args->v0.count = ret; 99 ret = 0; 100 } 101 } else { 102 ret = -EINVAL; 103 } 104 } 105 106 return ret; 107 } 108 109 static int 110 nvkm_client_mthd(struct nvkm_object *object, u32 mthd, void *data, u32 size) 111 { 112 struct nvkm_client *client = nvkm_client(object); 113 switch (mthd) { 114 case NVIF_CLIENT_V0_DEVLIST: 115 return nvkm_client_mthd_devlist(client, data, size); 116 default: 117 break; 118 } 119 return -EINVAL; 120 } 121 122 static int 123 nvkm_client_child_new(const struct nvkm_oclass *oclass, 124 void *data, u32 size, struct nvkm_object **pobject) 125 { 126 return oclass->base.ctor(oclass, data, size, pobject); 127 } 128 129 static int 130 nvkm_client_child_get(struct nvkm_object *object, int index, 131 struct nvkm_oclass *oclass) 132 { 133 const struct nvkm_sclass *sclass; 134 135 switch (index) { 136 case 0: sclass = &nvkm_uclient_sclass; break; 137 case 1: sclass = &nvkm_udevice_sclass; break; 138 default: 139 return -EINVAL; 140 } 141 142 oclass->ctor = nvkm_client_child_new; 143 oclass->base = *sclass; 144 return 0; 145 } 146 147 static int 148 nvkm_client_fini(struct nvkm_object *object, bool suspend) 149 { 150 return 0; 151 } 152 153 static void * 154 nvkm_client_dtor(struct nvkm_object *object) 155 { 156 return nvkm_client(object); 157 } 158 159 static const struct nvkm_object_func 160 nvkm_client = { 161 .dtor = nvkm_client_dtor, 162 .fini = nvkm_client_fini, 163 .mthd = nvkm_client_mthd, 164 .sclass = nvkm_client_child_get, 165 }; 166 167 int 168 nvkm_client_new(const char *name, u64 device, const char *cfg, const char *dbg, 169 int (*event)(u64, void *, u32), struct nvkm_client **pclient) 170 { 171 struct nvkm_oclass oclass = { .base = nvkm_uclient_sclass }; 172 struct nvkm_client *client; 173 174 if (!(client = *pclient = kzalloc(sizeof(*client), GFP_KERNEL))) 175 return -ENOMEM; 176 oclass.client = client; 177 178 nvkm_object_ctor(&nvkm_client, &oclass, &client->object); 179 snprintf(client->name, sizeof(client->name), "%s", name); 180 client->device = device; 181 client->debug = nvkm_dbgopt(dbg, "CLIENT"); 182 client->objroot = RB_ROOT; 183 spin_lock_init(&client->obj_lock); 184 client->event = event; 185 INIT_LIST_HEAD(&client->umem); 186 spin_lock_init(&client->lock); 187 return 0; 188 } 189