1 /* 2 * Copyright 2017 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 * Authors: Ben Skeggs <bskeggs@redhat.com> 23 */ 24 #include "ior.h" 25 26 static const char * 27 nvkm_ior_name[] = { 28 [DAC] = "DAC", 29 [SOR] = "SOR", 30 [PIOR] = "PIOR", 31 }; 32 33 struct nvkm_ior * 34 nvkm_ior_find(struct nvkm_disp *disp, enum nvkm_ior_type type, int id) 35 { 36 struct nvkm_ior *ior; 37 list_for_each_entry(ior, &disp->iors, head) { 38 if (ior->type == type && (id < 0 || ior->id == id)) 39 return ior; 40 } 41 return NULL; 42 } 43 44 void 45 nvkm_ior_del(struct nvkm_ior **pior) 46 { 47 struct nvkm_ior *ior = *pior; 48 if (ior) { 49 IOR_DBG(ior, "dtor"); 50 list_del(&ior->head); 51 kfree(*pior); 52 *pior = NULL; 53 } 54 } 55 56 int 57 nvkm_ior_new_(const struct nvkm_ior_func *func, struct nvkm_disp *disp, 58 enum nvkm_ior_type type, int id, bool hda) 59 { 60 struct nvkm_ior *ior; 61 if (!(ior = kzalloc(sizeof(*ior), GFP_KERNEL))) 62 return -ENOMEM; 63 ior->func = func; 64 ior->disp = disp; 65 ior->type = type; 66 ior->id = id; 67 ior->hda = hda; 68 snprintf(ior->name, sizeof(ior->name), "%s-%d", nvkm_ior_name[ior->type], ior->id); 69 list_add_tail(&ior->head, &disp->iors); 70 IOR_DBG(ior, "ctor"); 71 return 0; 72 } 73