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1/*2 * Copyright 2021 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#define nvkm_ucgrp(p) container_of((p), struct nvkm_ucgrp, object)23#include "priv.h"24#include "cgrp.h"25#include "runl.h"26 27#include <subdev/mmu.h>28 29#include <nvif/if0021.h>30 31struct nvkm_ucgrp {32 struct nvkm_object object;33 struct nvkm_cgrp *cgrp;34};35 36static int37nvkm_ucgrp_chan_new(const struct nvkm_oclass *oclass, void *argv, u32 argc,38 struct nvkm_object **pobject)39{40 struct nvkm_cgrp *cgrp = nvkm_ucgrp(oclass->parent)->cgrp;41 42 return nvkm_uchan_new(cgrp->runl->fifo, cgrp, oclass, argv, argc, pobject);43}44 45static int46nvkm_ucgrp_sclass(struct nvkm_object *object, int index, struct nvkm_oclass *oclass)47{48 struct nvkm_cgrp *cgrp = nvkm_ucgrp(object)->cgrp;49 struct nvkm_fifo *fifo = cgrp->runl->fifo;50 const struct nvkm_fifo_func_chan *chan = &fifo->func->chan;51 int c = 0;52 53 /* *_CHANNEL_GPFIFO_* */54 if (chan->user.oclass) {55 if (c++ == index) {56 oclass->base = chan->user;57 oclass->ctor = nvkm_ucgrp_chan_new;58 return 0;59 }60 }61 62 return -EINVAL;63}64 65static void *66nvkm_ucgrp_dtor(struct nvkm_object *object)67{68 struct nvkm_ucgrp *ucgrp = nvkm_ucgrp(object);69 70 nvkm_cgrp_unref(&ucgrp->cgrp);71 return ucgrp;72}73 74static const struct nvkm_object_func75nvkm_ucgrp = {76 .dtor = nvkm_ucgrp_dtor,77 .sclass = nvkm_ucgrp_sclass,78};79 80int81nvkm_ucgrp_new(struct nvkm_fifo *fifo, const struct nvkm_oclass *oclass, void *argv, u32 argc,82 struct nvkm_object **pobject)83{84 union nvif_cgrp_args *args = argv;85 struct nvkm_runl *runl;86 struct nvkm_vmm *vmm;87 struct nvkm_ucgrp *ucgrp;88 int ret;89 90 if (argc < sizeof(args->v0) || args->v0.version != 0)91 return -ENOSYS;92 argc -= sizeof(args->v0);93 94 if (args->v0.namelen != argc)95 return -EINVAL;96 97 /* Lookup objects referenced in args. */98 runl = nvkm_runl_get(fifo, args->v0.runlist, 0);99 if (!runl)100 return -EINVAL;101 102 vmm = nvkm_uvmm_search(oclass->client, args->v0.vmm);103 if (IS_ERR(vmm))104 return PTR_ERR(vmm);105 106 /* Allocate channel group. */107 if (!(ucgrp = kzalloc(sizeof(*ucgrp), GFP_KERNEL))) {108 ret = -ENOMEM;109 goto done;110 }111 112 nvkm_object_ctor(&nvkm_ucgrp, oclass, &ucgrp->object);113 *pobject = &ucgrp->object;114 115 ret = nvkm_cgrp_new(runl, args->v0.name, vmm, true, &ucgrp->cgrp);116 if (ret)117 goto done;118 119 /* Return channel group info to caller. */120 args->v0.cgid = ucgrp->cgrp->id;121 122done:123 nvkm_vmm_unref(&vmm);124 return ret;125}126