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
nvkm_bar_flush(struct nvkm_bar * bar)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 *
nvkm_bar_kmap(struct nvkm_bar * bar)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
nvkm_bar_umap(struct nvkm_bar * bar,u64 size,int type,struct nvkm_vma * vma)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
nvkm_bar_oneinit(struct nvkm_subdev * subdev)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
nvkm_bar_init(struct nvkm_subdev * subdev)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 *
nvkm_bar_dtor(struct nvkm_subdev * subdev)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
nvkm_bar_ctor(const struct nvkm_bar_func * func,struct nvkm_device * device,int index,struct nvkm_bar * bar)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