1 /* $NetBSD: nouveau_nvkm_subdev_top_base.c,v 1.2 2021/12/18 23:45:42 riastradh Exp $ */ 2 3 /* 4 * Copyright 2016 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Ben Skeggs <bskeggs (at) redhat.com> 25 */ 26 #include <sys/cdefs.h> 27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_top_base.c,v 1.2 2021/12/18 23:45:42 riastradh Exp $"); 28 29 #include "priv.h" 30 31 struct nvkm_top_device * 32 nvkm_top_device_new(struct nvkm_top *top) 33 { 34 struct nvkm_top_device *info = kmalloc(sizeof(*info), GFP_KERNEL); 35 if (info) { 36 info->index = NVKM_SUBDEV_NR; 37 info->addr = 0; 38 info->fault = -1; 39 info->engine = -1; 40 info->runlist = -1; 41 info->reset = -1; 42 info->intr = -1; 43 list_add_tail(&info->head, &top->device); 44 } 45 return info; 46 } 47 48 u32 49 nvkm_top_addr(struct nvkm_device *device, enum nvkm_devidx index) 50 { 51 struct nvkm_top *top = device->top; 52 struct nvkm_top_device *info; 53 54 if (top) { 55 list_for_each_entry(info, &top->device, head) { 56 if (info->index == index) 57 return info->addr; 58 } 59 } 60 61 return 0; 62 } 63 64 u32 65 nvkm_top_reset(struct nvkm_device *device, enum nvkm_devidx index) 66 { 67 struct nvkm_top *top = device->top; 68 struct nvkm_top_device *info; 69 70 if (top) { 71 list_for_each_entry(info, &top->device, head) { 72 if (info->index == index && info->reset >= 0) 73 return BIT(info->reset); 74 } 75 } 76 77 return 0; 78 } 79 80 u32 81 nvkm_top_intr_mask(struct nvkm_device *device, enum nvkm_devidx devidx) 82 { 83 struct nvkm_top *top = device->top; 84 struct nvkm_top_device *info; 85 86 if (top) { 87 list_for_each_entry(info, &top->device, head) { 88 if (info->index == devidx && info->intr >= 0) 89 return BIT(info->intr); 90 } 91 } 92 93 return 0; 94 } 95 96 u32 97 nvkm_top_intr(struct nvkm_device *device, u32 intr, u64 *psubdevs) 98 { 99 struct nvkm_top *top = device->top; 100 struct nvkm_top_device *info; 101 u64 subdevs = 0; 102 u32 handled = 0; 103 104 if (top) { 105 list_for_each_entry(info, &top->device, head) { 106 if (info->index != NVKM_SUBDEV_NR && info->intr >= 0) { 107 if (intr & BIT(info->intr)) { 108 subdevs |= BIT_ULL(info->index); 109 handled |= BIT(info->intr); 110 } 111 } 112 } 113 } 114 115 *psubdevs = subdevs; 116 return intr & ~handled; 117 } 118 119 int 120 nvkm_top_fault_id(struct nvkm_device *device, enum nvkm_devidx devidx) 121 { 122 struct nvkm_top *top = device->top; 123 struct nvkm_top_device *info; 124 125 list_for_each_entry(info, &top->device, head) { 126 if (info->index == devidx && info->fault >= 0) 127 return info->fault; 128 } 129 130 return -ENOENT; 131 } 132 133 enum nvkm_devidx 134 nvkm_top_fault(struct nvkm_device *device, int fault) 135 { 136 struct nvkm_top *top = device->top; 137 struct nvkm_top_device *info; 138 139 list_for_each_entry(info, &top->device, head) { 140 if (info->fault == fault) 141 return info->index; 142 } 143 144 return NVKM_SUBDEV_NR; 145 } 146 147 enum nvkm_devidx 148 nvkm_top_engine(struct nvkm_device *device, int index, int *runl, int *engn) 149 { 150 struct nvkm_top *top = device->top; 151 struct nvkm_top_device *info; 152 int n = 0; 153 154 list_for_each_entry(info, &top->device, head) { 155 if (info->engine >= 0 && info->runlist >= 0 && n++ == index) { 156 *runl = info->runlist; 157 *engn = info->engine; 158 return info->index; 159 } 160 } 161 162 return -ENODEV; 163 } 164 165 static int 166 nvkm_top_oneinit(struct nvkm_subdev *subdev) 167 { 168 struct nvkm_top *top = nvkm_top(subdev); 169 return top->func->oneinit(top); 170 } 171 172 static void * 173 nvkm_top_dtor(struct nvkm_subdev *subdev) 174 { 175 struct nvkm_top *top = nvkm_top(subdev); 176 struct nvkm_top_device *info, *temp; 177 178 list_for_each_entry_safe(info, temp, &top->device, head) { 179 list_del(&info->head); 180 kfree(info); 181 } 182 183 return top; 184 } 185 186 static const struct nvkm_subdev_func 187 nvkm_top = { 188 .dtor = nvkm_top_dtor, 189 .oneinit = nvkm_top_oneinit, 190 }; 191 192 int 193 nvkm_top_new_(const struct nvkm_top_func *func, struct nvkm_device *device, 194 int index, struct nvkm_top **ptop) 195 { 196 struct nvkm_top *top; 197 if (!(top = *ptop = kzalloc(sizeof(*top), GFP_KERNEL))) 198 return -ENOMEM; 199 nvkm_subdev_ctor(&nvkm_top, device, index, &top->subdev); 200 top->func = func; 201 INIT_LIST_HEAD(&top->device); 202 return 0; 203 } 204
Indexes created Thu Sep 25 06:09:39 GMT 2025