/*
* 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_HOST_RUNLISTS;
for (i = 0 ; i < ARRAY_SIZE(a->v.runlist); i++) {
a->v.runlist[i].mthd = NV_DEVICE_HOST_RUNLIST_ENGINES;
a->v.runlist[i].data = 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 = kcalloc(device->runlists, sizeof (*device->runlist),
GFP_KERNEL);
if (!device->runlist) {
ret = -ENOMEM;
goto done;
}
for (i = 0 ; i < device->runlists; i++) {
if (a->v.runlist[i].mthd != NV_DEVICE_INFO_INVALID)
device->runlist[i].engines = a->v.runlist[i].data;
}
done:
kfree(a);
return ret;
}
u64
nvif_fifo_runlist(struct nvif_device *device, u64 engine)
{
u64 runm = 0 ;
int ret, i;
if ((ret = nvif_fifo_runlists(device)))
return runm;
for (i = 0 ; i < device->runlists; i++) {
if (device->runlist[i].engines & engine)
runm |= BIT_ULL(i);
}
return runm;
}
Messung V0.5 in Prozent C=99 H=71 G=86
¤ Dauer der Verarbeitung: 0.12 Sekunden
(vorverarbeitet am 2026-10-04)
¤
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