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 #include "runl.h" 23 #include "chan.h" 24 #include "chid.h" 25 #include "priv.h" 26 27 void 28 nvkm_runl_del(struct nvkm_runl *runl) 29 { 30 struct nvkm_engn *engn, *engt; 31 32 list_for_each_entry_safe(engn, engt, &runl->engns, head) { 33 list_del(&engn->head); 34 kfree(engn); 35 } 36 37 nvkm_chid_unref(&runl->chid); 38 nvkm_chid_unref(&runl->cgid); 39 40 list_del(&runl->head); 41 mutex_destroy(&runl->mutex); 42 kfree(runl); 43 } 44 45 struct nvkm_engn * 46 nvkm_runl_add(struct nvkm_runl *runl, int engi, const struct nvkm_engn_func *func, 47 enum nvkm_subdev_type type, int inst) 48 { 49 struct nvkm_device *device = runl->fifo->engine.subdev.device; 50 struct nvkm_engine *engine; 51 struct nvkm_engn *engn; 52 53 engine = nvkm_device_engine(device, type, inst); 54 if (!engine) { 55 RUNL_DEBUG(runl, "engn %d.%d[%s] not found", engi, inst, nvkm_subdev_type[type]); 56 return NULL; 57 } 58 59 if (!(engn = kzalloc(sizeof(*engn), GFP_KERNEL))) 60 return NULL; 61 62 engn->func = func; 63 engn->runl = runl; 64 engn->id = engi; 65 engn->engine = engine; 66 list_add_tail(&engn->head, &runl->engns); 67 return engn; 68 } 69 70 struct nvkm_runl * 71 nvkm_runl_get(struct nvkm_fifo *fifo, int runi, u32 addr) 72 { 73 struct nvkm_runl *runl; 74 75 nvkm_runl_foreach(runl, fifo) { 76 if ((runi >= 0 && runl->id == runi) || (runi < 0 && runl->addr == addr)) 77 return runl; 78 } 79 80 return NULL; 81 } 82 83 struct nvkm_runl * 84 nvkm_runl_new(struct nvkm_fifo *fifo, int runi, u32 addr, int id_nr) 85 { 86 struct nvkm_subdev *subdev = &fifo->engine.subdev; 87 struct nvkm_runl *runl; 88 int ret; 89 90 if (!(runl = kzalloc(sizeof(*runl), GFP_KERNEL))) 91 return NULL; 92 93 runl->func = fifo->func->runl; 94 runl->fifo = fifo; 95 runl->id = runi; 96 runl->addr = addr; 97 INIT_LIST_HEAD(&runl->engns); 98 INIT_LIST_HEAD(&runl->cgrps); 99 mutex_init(&runl->mutex); 100 list_add_tail(&runl->head, &fifo->runls); 101 102 if (!fifo->chid) { 103 if ((ret = nvkm_chid_new(&nvkm_chan_event, subdev, id_nr, 0, id_nr, &runl->cgid)) || 104 (ret = nvkm_chid_new(&nvkm_chan_event, subdev, id_nr, 0, id_nr, &runl->chid))) { 105 RUNL_ERROR(runl, "cgid/chid: %d", ret); 106 nvkm_runl_del(runl); 107 return NULL; 108 } 109 } else { 110 runl->cgid = nvkm_chid_ref(fifo->cgid); 111 runl->chid = nvkm_chid_ref(fifo->chid); 112 } 113 114 return runl; 115 } 116