1 /* 2 * Copyright 2013 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 <bskeggs@redhat.com> 23 */ 24 25 #include <nvif/client.h> 26 #include <nvif/driver.h> 27 #include <nvif/ioctl.h> 28 29 #include <nvif/class.h> 30 #include <nvif/if0000.h> 31 32 int 33 nvif_client_ioctl(struct nvif_client *client, void *data, u32 size) 34 { 35 return client->driver->ioctl(client->object.priv, client->super, data, size, NULL); 36 } 37 38 int 39 nvif_client_suspend(struct nvif_client *client) 40 { 41 return client->driver->suspend(client->object.priv); 42 } 43 44 int 45 nvif_client_resume(struct nvif_client *client) 46 { 47 return client->driver->resume(client->object.priv); 48 } 49 50 void 51 nvif_client_fini(struct nvif_client *client) 52 { 53 nvif_object_fini(&client->object); 54 if (client->driver) { 55 if (client->driver->fini) 56 client->driver->fini(client->object.priv); 57 client->driver = NULL; 58 } 59 } 60 61 int 62 nvif_client_init(struct nvif_client *parent, const char *name, u64 device, 63 struct nvif_client *client) 64 { 65 struct nvif_client_v0 args = { .device = device }; 66 struct { 67 struct nvif_ioctl_v0 ioctl; 68 struct nvif_ioctl_nop_v0 nop; 69 } nop = {}; 70 int ret; 71 72 strncpy(args.name, name, sizeof(args.name)); 73 ret = nvif_object_init(parent != client ? &parent->object : NULL, 74 0, NVIF_CLASS_CLIENT, &args, sizeof(args), 75 &client->object); 76 if (ret) 77 return ret; 78 79 client->object.client = client; 80 client->object.handle = ~0; 81 client->route = NVIF_IOCTL_V0_ROUTE_NVIF; 82 client->super = true; 83 client->driver = parent->driver; 84 85 if (ret == 0) { 86 ret = nvif_client_ioctl(client, &nop, sizeof(nop)); 87 client->version = nop.nop.version; 88 } 89 90 if (ret) 91 nvif_client_fini(client); 92 return ret; 93 } 94