2 * Copyright 2016 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
22 * Authors: Ben Skeggs <bskeggs@redhat.com>
26 struct nvkm_top_device *
27 nvkm_top_device_new(struct nvkm_top *top)
29 struct nvkm_top_device *info = kmalloc(sizeof(*info), GFP_KERNEL);
31 info->index = NVKM_SUBDEV_NR;
38 list_add_tail(&info->head, &top->device);
44 nvkm_top_reset(struct nvkm_top *top, enum nvkm_devidx index)
46 struct nvkm_top_device *info;
49 list_for_each_entry(info, &top->device, head) {
50 if (info->index == index && info->reset >= 0)
51 return BIT(info->reset);
59 nvkm_top_intr(struct nvkm_top *top, u32 intr, u64 *psubdevs)
61 struct nvkm_top_device *info;
66 list_for_each_entry(info, &top->device, head) {
67 if (info->index != NVKM_SUBDEV_NR && info->intr >= 0) {
68 if (intr & BIT(info->intr)) {
69 subdevs |= BIT_ULL(info->index);
70 handled |= BIT(info->intr);
77 return intr & ~handled;
81 nvkm_top_fault(struct nvkm_top *top, int fault)
83 struct nvkm_top_device *info;
85 list_for_each_entry(info, &top->device, head) {
86 if (info->fault == fault)
90 return NVKM_SUBDEV_NR;
94 nvkm_top_engine(struct nvkm_top *top, int index, int *runl, int *engn)
96 struct nvkm_top_device *info;
99 list_for_each_entry(info, &top->device, head) {
100 if (info->engine >= 0 && info->runlist >= 0 && n++ == index) {
101 *runl = info->runlist;
102 *engn = info->engine;
111 nvkm_top_oneinit(struct nvkm_subdev *subdev)
113 struct nvkm_top *top = nvkm_top(subdev);
114 return top->func->oneinit(top);
118 nvkm_top_dtor(struct nvkm_subdev *subdev)
120 struct nvkm_top *top = nvkm_top(subdev);
121 struct nvkm_top_device *info, *temp;
123 list_for_each_entry_safe(info, temp, &top->device, head) {
124 list_del(&info->head);
131 static const struct nvkm_subdev_func
133 .dtor = nvkm_top_dtor,
134 .oneinit = nvkm_top_oneinit,
138 nvkm_top_new_(const struct nvkm_top_func *func, struct nvkm_device *device,
139 int index, struct nvkm_top **ptop)
141 struct nvkm_top *top;
142 if (!(top = *ptop = kzalloc(sizeof(*top), GFP_KERNEL)))
144 nvkm_subdev_ctor(&nvkm_top, device, index, &top->subdev);
146 INIT_LIST_HEAD(&top->device);