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 "priv.h" 25 26 void 27 nvkm_bar_flush(struct nvkm_bar *bar) 28 { 29 if (bar && bar->func->flush) 30 bar->func->flush(bar); 31 } 32 33 struct nvkm_vm * 34 nvkm_bar_kmap(struct nvkm_bar *bar) 35 { 36 /* disallow kmap() until after vm has been bootstrapped */ 37 if (bar && bar->func->kmap && bar->subdev.oneinit) 38 return bar->func->kmap(bar); 39 return NULL; 40 } 41 42 int 43 nvkm_bar_umap(struct nvkm_bar *bar, u64 size, int type, struct nvkm_vma *vma) 44 { 45 return bar->func->umap(bar, size, type, vma); 46 } 47 48 static int 49 nvkm_bar_oneinit(struct nvkm_subdev *subdev) 50 { 51 struct nvkm_bar *bar = nvkm_bar(subdev); 52 return bar->func->oneinit(bar); 53 } 54 55 static int 56 nvkm_bar_init(struct nvkm_subdev *subdev) 57 { 58 struct nvkm_bar *bar = nvkm_bar(subdev); 59 return bar->func->init(bar); 60 } 61 62 static void * 63 nvkm_bar_dtor(struct nvkm_subdev *subdev) 64 { 65 struct nvkm_bar *bar = nvkm_bar(subdev); 66 return bar->func->dtor(bar); 67 } 68 69 static const struct nvkm_subdev_func 70 nvkm_bar = { 71 .dtor = nvkm_bar_dtor, 72 .oneinit = nvkm_bar_oneinit, 73 .init = nvkm_bar_init, 74 }; 75 76 void 77 nvkm_bar_ctor(const struct nvkm_bar_func *func, struct nvkm_device *device, 78 int index, struct nvkm_bar *bar) 79 { 80 nvkm_subdev_ctor(&nvkm_bar, device, index, 0, &bar->subdev); 81 bar->func = func; 82 spin_lock_init(&bar->lock); 83 } 84