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_uchan(p) container_of((p), struct nvkm_uchan, object) 23 #include "cgrp.h" 24 #include "chan.h" 25 26 #include <core/oproxy.h> 27 28 #include <nvif/if0020.h> 29 30 #include "gk104.h" 31 32 struct nvkm_uchan { 33 struct nvkm_object object; 34 struct nvkm_chan *chan; 35 }; 36 37 static int 38 nvkm_uchan_uevent(struct nvkm_object *object, void *argv, u32 argc, struct nvkm_uevent *uevent) 39 { 40 struct nvkm_chan *chan = nvkm_uchan(object)->chan; 41 union nvif_chan_event_args *args = argv; 42 43 if (!uevent) 44 return 0; 45 if (argc != sizeof(args->v0) || args->v0.version != 0) 46 return -ENOSYS; 47 48 switch (args->v0.type) { 49 case NVIF_CHAN_EVENT_V0_NON_STALL_INTR: 50 case NVIF_CHAN_EVENT_V0_KILLED: 51 return chan->object.func->uevent(&chan->object, argv, argc, uevent); 52 default: 53 break; 54 } 55 56 return -ENOSYS; 57 } 58 59 struct nvkm_uobj { 60 struct nvkm_oproxy oproxy; 61 struct nvkm_chan *chan; 62 }; 63 64 static const struct nvkm_oproxy_func 65 nvkm_uchan_object = { 66 }; 67 68 static int 69 nvkm_uchan_object_new(const struct nvkm_oclass *oclass, void *argv, u32 argc, 70 struct nvkm_object **pobject) 71 { 72 struct nvkm_chan *chan = nvkm_uchan(oclass->parent)->chan; 73 struct nvkm_uobj *uobj; 74 struct nvkm_oclass _oclass; 75 76 if (!(uobj = kzalloc(sizeof(*uobj), GFP_KERNEL))) 77 return -ENOMEM; 78 79 nvkm_oproxy_ctor(&nvkm_uchan_object, oclass, &uobj->oproxy); 80 uobj->chan = chan; 81 *pobject = &uobj->oproxy.base; 82 83 _oclass = *oclass; 84 _oclass.parent = &chan->object; 85 return nvkm_fifo_chan_child_new(&_oclass, argv, argc, &uobj->oproxy.object); 86 } 87 88 static int 89 nvkm_uchan_sclass(struct nvkm_object *object, int index, struct nvkm_oclass *oclass) 90 { 91 struct nvkm_chan *chan = nvkm_uchan(object)->chan; 92 int ret; 93 94 ret = chan->object.func->sclass(&chan->object, index, oclass); 95 if (ret) 96 return ret; 97 98 oclass->ctor = nvkm_uchan_object_new; 99 return 0; 100 } 101 102 static int 103 nvkm_uchan_map(struct nvkm_object *object, void *argv, u32 argc, 104 enum nvkm_object_map *type, u64 *addr, u64 *size) 105 { 106 struct nvkm_chan *chan = nvkm_uchan(object)->chan; 107 108 return chan->object.func->map(&chan->object, argv, argc, type, addr, size); 109 } 110 111 static int 112 nvkm_uchan_fini(struct nvkm_object *object, bool suspend) 113 { 114 struct nvkm_chan *chan = nvkm_uchan(object)->chan; 115 int ret; 116 117 ret = chan->object.func->fini(&chan->object, suspend); 118 if (ret && suspend) 119 return ret; 120 121 return 0; 122 } 123 124 static int 125 nvkm_uchan_init(struct nvkm_object *object) 126 { 127 struct nvkm_chan *chan = nvkm_uchan(object)->chan; 128 129 return chan->object.func->init(&chan->object); 130 } 131 132 static void * 133 nvkm_uchan_dtor(struct nvkm_object *object) 134 { 135 struct nvkm_uchan *uchan = nvkm_uchan(object); 136 137 nvkm_chan_del(&uchan->chan); 138 return uchan; 139 } 140 141 static const struct nvkm_object_func 142 nvkm_uchan = { 143 .dtor = nvkm_uchan_dtor, 144 .init = nvkm_uchan_init, 145 .fini = nvkm_uchan_fini, 146 .map = nvkm_uchan_map, 147 .sclass = nvkm_uchan_sclass, 148 .uevent = nvkm_uchan_uevent, 149 }; 150 151 int 152 nvkm_uchan_new(struct nvkm_fifo *fifo, struct nvkm_cgrp *cgrp, const struct nvkm_oclass *oclass, 153 void *argv, u32 argc, struct nvkm_object **pobject) 154 { 155 struct nvkm_object *object = NULL; 156 struct nvkm_uchan *uchan; 157 int ret; 158 159 if (!(uchan = kzalloc(sizeof(*uchan), GFP_KERNEL))) 160 return -ENOMEM; 161 162 nvkm_object_ctor(&nvkm_uchan, oclass, &uchan->object); 163 *pobject = &uchan->object; 164 165 if (fifo->func->chan.ctor) 166 ret = fifo->func->chan.ctor(gk104_fifo(fifo), oclass, argv, argc, &object); 167 else 168 ret = fifo->func->chan.oclass->ctor(fifo, oclass, argv, argc, &object); 169 if (!object) 170 return ret; 171 172 uchan->chan = container_of(object, typeof(*uchan->chan), object); 173 return ret; 174 } 175