100 lines
2.8 KiB
C
100 lines
2.8 KiB
C
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/*
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* Copyright 2018 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <nvif/fifo.h>
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static int
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nvif_fifo_runlists(struct nvif_device *device)
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{
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struct nvif_object *object = &device->object;
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struct {
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struct nv_device_info_v1 m;
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struct {
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struct nv_device_info_v1_data runlists;
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struct nv_device_info_v1_data runlist[64];
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} v;
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} *a;
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int ret, i;
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if (device->runlist)
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return 0;
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if (!(a = kmalloc(sizeof(*a), GFP_KERNEL)))
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return -ENOMEM;
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a->m.version = 1;
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a->m.count = sizeof(a->v) / sizeof(a->v.runlists);
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a->v.runlists.mthd = NV_DEVICE_FIFO_RUNLISTS;
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for (i = 0; i < ARRAY_SIZE(a->v.runlist); i++)
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a->v.runlist[i].mthd = NV_DEVICE_FIFO_RUNLIST_ENGINES(i);
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ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, a, sizeof(*a));
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if (ret)
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goto done;
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device->runlists = fls64(a->v.runlists.data);
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device->runlist = kcalloc(device->runlists, sizeof(*device->runlist),
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GFP_KERNEL);
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if (!device->runlist) {
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ret = -ENOMEM;
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goto done;
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}
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for (i = 0; i < device->runlists; i++) {
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if (a->v.runlists.data & BIT_ULL(i))
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device->runlist[i].engines = a->v.runlist[i].data;
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}
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done:
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kfree(a);
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return ret;
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}
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u64
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nvif_fifo_runlist(struct nvif_device *device, u64 engine)
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{
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struct nvif_object *object = &device->object;
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struct {
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struct nv_device_info_v1 m;
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struct {
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struct nv_device_info_v1_data engine;
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} v;
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} a = {
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.m.version = 1,
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.m.count = sizeof(a.v) / sizeof(a.v.engine),
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.v.engine.mthd = engine,
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};
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u64 runm = 0;
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int ret, i;
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if ((ret = nvif_fifo_runlists(device)))
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return runm;
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ret = nvif_object_mthd(object, NV_DEVICE_V0_INFO, &a, sizeof(a));
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if (ret == 0) {
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for (i = 0; i < device->runlists; i++) {
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if (device->runlist[i].engines & a.v.engine.data)
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runm |= BIT_ULL(i);
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}
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}
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return runm;
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}
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