1 /* 2 * Copyright 2021 Red Hat Inc. 3 * 4 * Permission is hereby granted, free of charge, to any person obtaining a 5 * copy of this software and associated documentation files (the "Software"), 6 * to deal in the Software without restriction, including without limitation 7 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 8 * and/or sell copies of the Software, and to permit persons to whom the 9 * Software is furnished to do so, subject to the following conditions: 10 * 11 * The above copyright notice and this permission notice shall be included in 12 * all copies or substantial portions of the Software. 13 * 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 18 * 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 OR 20 * 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 31 struct nvkm_ucgrp { 32 struct nvkm_object object; 33 struct nvkm_cgrp *cgrp; 34 }; 35 36 static int 37 nvkm_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 45 static int 46 nvkm_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 65 static void * 66 nvkm_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 74 static const struct nvkm_object_func 75 nvkm_ucgrp = { 76 .dtor = nvkm_ucgrp_dtor, 77 .sclass = nvkm_ucgrp_sclass, 78 }; 79 80 int 81 nvkm_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; 121 122 done: 123 nvkm_vmm_unref(&vmm); 124 return ret; 125 } 126