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