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1/*2 * Copyright 2018 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 */22#include <nvif/fifo.h>23 24static int25nvif_fifo_runlists(struct nvif_device *device)26{27 struct nvif_object *object = &device->object;28 struct {29 struct nv_device_info_v1 m;30 struct {31 struct nv_device_info_v1_data runlists;32 struct nv_device_info_v1_data runlist[64];33 } v;34 } *a;35 int ret, i;36 37 if (device->runlist)38 return 0;39 40 if (!(a = kmalloc(sizeof(*a), GFP_KERNEL)))41 return -ENOMEM;42 a->m.version = 1;43 a->m.count = sizeof(a->v) / sizeof(a->v.runlists);44 a->v.runlists.mthd = NV_DEVICE_HOST_RUNLISTS;45 for (i = 0; i < ARRAY_SIZE(a->v.runlist); i++) {46 a->v.runlist[i].mthd = NV_DEVICE_HOST_RUNLIST_ENGINES;47 a->v.runlist[i].data = i;48 }49 50 ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, a, sizeof(*a));51 if (ret)52 goto done;53 54 device->runlists = fls64(a->v.runlists.data);55 device->runlist = kcalloc(device->runlists, sizeof(*device->runlist),56 GFP_KERNEL);57 if (!device->runlist) {58 ret = -ENOMEM;59 goto done;60 }61 62 for (i = 0; i < device->runlists; i++) {63 if (a->v.runlist[i].mthd != NV_DEVICE_INFO_INVALID)64 device->runlist[i].engines = a->v.runlist[i].data;65 }66 67done:68 kfree(a);69 return ret;70}71 72u6473nvif_fifo_runlist(struct nvif_device *device, u64 engine)74{75 u64 runm = 0;76 int ret, i;77 78 if ((ret = nvif_fifo_runlists(device)))79 return runm;80 81 for (i = 0; i < device->runlists; i++) {82 if (device->runlist[i].engines & engine)83 runm |= BIT_ULL(i);84 }85 86 return runm;87}88