/*
* Copyright 2021 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.
*/
#define nvkm_ucgrp(p) container_of((p), struct nvkm_ucgrp, object)
#include "priv.h"
#include "cgrp.h"
#include "runl.h"
#include <subdev/mmu.h>
#include <nvif/if0021.h>
struct nvkm_ucgrp {
struct nvkm_object object;
struct nvkm_cgrp *cgrp;
};
static int
nvkm_ucgrp_chan_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,
struct nvkm_object **pobject)
{
struct nvkm_cgrp *cgrp = nvkm_ucgrp(oclass->parent)->cgrp;
return nvkm_uchan_new(cgrp->runl->fifo, cgrp, oclass, argv, argc, pobject);
}
static int
nvkm_ucgrp_sclass(struct nvkm_object *object, int index, struct nvkm_oclass *oclass)
{
struct nvkm_cgrp *cgrp = nvkm_ucgrp(object)->cgrp;
struct nvkm_fifo *fifo = cgrp->runl->fifo;
const struct nvkm_fifo_func_chan *chan = &fifo->func->chan;
int c = 0;
/* *_CHANNEL_GPFIFO_* */
if (chan->user.oclass) {
if (c++ == index) {
oclass->base = chan->user;
oclass->ctor = nvkm_ucgrp_chan_new;
return 0;
}
}
return -EINVAL;
}
static void *
nvkm_ucgrp_dtor(struct nvkm_object *object)
{
struct nvkm_ucgrp *ucgrp = nvkm_ucgrp(object);
nvkm_cgrp_unref(&ucgrp->cgrp);
return ucgrp;
}
static const struct nvkm_object_func
nvkm_ucgrp = {
.dtor = nvkm_ucgrp_dtor,
.sclass = nvkm_ucgrp_sclass,
};
int
nvkm_ucgrp_new(struct nvkm_fifo *fifo, const struct nvkm_oclass *oclass, void *argv, u32 argc,
struct nvkm_object **pobject)
{
union nvif_cgrp_args *args = argv;
struct nvkm_runl *runl;
struct nvkm_vmm *vmm;
struct nvkm_ucgrp *ucgrp;
int ret;
if (argc < sizeof(args->v0) || args->v0.version != 0)
return -ENOSYS;
argc -= sizeof(args->v0);
if (args->v0.namelen != argc)
return -EINVAL;
/* Lookup objects referenced in args. */
runl = nvkm_runl_get(fifo, args->v0.runlist, 0);
if (!runl)
return -EINVAL;
vmm = nvkm_uvmm_search(oclass->client, args->v0.vmm);
if (IS_ERR(vmm))
return PTR_ERR(vmm);
/* Allocate channel group. */
if (!(ucgrp = kzalloc(sizeof(*ucgrp), GFP_KERNEL))) {
ret = -ENOMEM;
goto done;
}
nvkm_object_ctor(&nvkm_ucgrp, oclass, &ucgrp->object);
*pobject = &ucgrp->object;
ret = nvkm_cgrp_new(runl, args->v0.name, vmm, true, &ucgrp->cgrp);
if (ret)
goto done;
/* Return channel group info to caller. */
args->v0.cgid = ucgrp->cgrp->id;
done:
nvkm_vmm_unref(&vmm);
return ret;
}