1 /* 2 * Copyright 2014 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/device.h> 26 27 u64 28 nvif_device_time(struct nvif_device *device) 29 { 30 return nvxx_timer(device)->read(nvxx_timer(device)); 31 } 32 33 void 34 nvif_device_fini(struct nvif_device *device) 35 { 36 nvif_object_fini(&device->base); 37 } 38 39 int 40 nvif_device_init(struct nvif_object *parent, void (*dtor)(struct nvif_device *), 41 u32 handle, u32 oclass, void *data, u32 size, 42 struct nvif_device *device) 43 { 44 int ret = nvif_object_init(parent, (void *)dtor, handle, oclass, 45 data, size, &device->base); 46 if (ret == 0) { 47 device->object = &device->base; 48 device->info.version = 0; 49 ret = nvif_object_mthd(&device->base, NV_DEVICE_V0_INFO, 50 &device->info, sizeof(device->info)); 51 } 52 return ret; 53 } 54 55 static void 56 nvif_device_del(struct nvif_device *device) 57 { 58 nvif_device_fini(device); 59 kfree(device); 60 } 61 62 int 63 nvif_device_new(struct nvif_object *parent, u32 handle, u32 oclass, 64 void *data, u32 size, struct nvif_device **pdevice) 65 { 66 struct nvif_device *device = kzalloc(sizeof(*device), GFP_KERNEL); 67 if (device) { 68 int ret = nvif_device_init(parent, nvif_device_del, handle, 69 oclass, data, size, device); 70 if (ret) { 71 kfree(device); 72 device = NULL; 73 } 74 *pdevice = device; 75 return ret; 76 } 77 return -ENOMEM; 78 } 79 80 void 81 nvif_device_ref(struct nvif_device *device, struct nvif_device **pdevice) 82 { 83 nvif_object_ref(&device->base, (struct nvif_object **)pdevice); 84 } 85