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 int 30 nvif_client_ioctl(struct nvif_client *client, void *data, u32 size) 31 { 32 return client->driver->ioctl(client->object.priv, client->super, data, size, NULL); 33 } 34 35 int 36 nvif_client_suspend(struct nvif_client *client) 37 { 38 return client->driver->suspend(client->object.priv); 39 } 40 41 int 42 nvif_client_resume(struct nvif_client *client) 43 { 44 return client->driver->resume(client->object.priv); 45 } 46 47 void 48 nvif_client_fini(struct nvif_client *client) 49 { 50 if (client->driver) { 51 client->driver->fini(client->object.priv); 52 client->driver = NULL; 53 client->object.client = NULL; 54 nvif_object_fini(&client->object); 55 } 56 } 57 58 const struct nvif_driver * 59 nvif_drivers[] = { 60 #ifdef __KERNEL__ 61 &nvif_driver_nvkm, 62 #else 63 &nvif_driver_drm, 64 &nvif_driver_lib, 65 &nvif_driver_null, 66 #endif 67 NULL 68 }; 69 70 int 71 nvif_client_init(const char *driver, const char *name, u64 device, 72 const char *cfg, const char *dbg, struct nvif_client *client) 73 { 74 struct { 75 struct nvif_ioctl_v0 ioctl; 76 struct nvif_ioctl_nop_v0 nop; 77 } args = {}; 78 int ret, i; 79 80 ret = nvif_object_init(NULL, 0, 0, NULL, 0, &client->object); 81 if (ret) 82 return ret; 83 84 client->object.client = client; 85 client->object.handle = ~0; 86 client->route = NVIF_IOCTL_V0_ROUTE_NVIF; 87 client->super = true; 88 89 for (i = 0, ret = -EINVAL; (client->driver = nvif_drivers[i]); i++) { 90 if (!driver || !strcmp(client->driver->name, driver)) { 91 ret = client->driver->init(name, device, cfg, dbg, 92 &client->object.priv); 93 if (!ret || driver) 94 break; 95 } 96 } 97 98 if (ret == 0) { 99 ret = nvif_client_ioctl(client, &args, sizeof(args)); 100 client->version = args.nop.version; 101 } 102 103 if (ret) 104 nvif_client_fini(client); 105 return ret; 106 } 107