1 /* 2 * Copyright 2016 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 "priv.h" 25 26 struct nvkm_top_device * 27 nvkm_top_device_new(struct nvkm_top *top) 28 { 29 struct nvkm_top_device *info = kmalloc(sizeof(*info), GFP_KERNEL); 30 if (info) { 31 info->type = NVKM_SUBDEV_NR; 32 info->inst = -1; 33 info->index = NVKM_SUBDEV_NR; 34 info->addr = 0; 35 info->fault = -1; 36 info->engine = -1; 37 info->runlist = -1; 38 info->reset = -1; 39 info->intr = -1; 40 list_add_tail(&info->head, &top->device); 41 } 42 return info; 43 } 44 45 u32 46 nvkm_top_addr(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) 47 { 48 struct nvkm_top *top = device->top; 49 struct nvkm_top_device *info; 50 51 if (top) { 52 list_for_each_entry(info, &top->device, head) { 53 if (info->type == type && info->inst == inst) 54 return info->addr; 55 } 56 } 57 58 return 0; 59 } 60 61 u32 62 nvkm_top_reset(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) 63 { 64 struct nvkm_top *top = device->top; 65 struct nvkm_top_device *info; 66 67 if (top) { 68 list_for_each_entry(info, &top->device, head) { 69 if (info->type == type && info->inst == inst && info->reset >= 0) 70 return BIT(info->reset); 71 } 72 } 73 74 return 0; 75 } 76 77 u32 78 nvkm_top_intr_mask(struct nvkm_device *device, enum nvkm_subdev_type type, int inst) 79 { 80 struct nvkm_top *top = device->top; 81 struct nvkm_top_device *info; 82 83 if (top) { 84 list_for_each_entry(info, &top->device, head) { 85 if (info->type == type && info->inst == inst && info->intr >= 0) 86 return BIT(info->intr); 87 } 88 } 89 90 return 0; 91 } 92 93 int 94 nvkm_top_fault_id(struct nvkm_device *device, enum nvkm_devidx devidx) 95 { 96 struct nvkm_top *top = device->top; 97 struct nvkm_top_device *info; 98 99 list_for_each_entry(info, &top->device, head) { 100 if (info->index == devidx && info->fault >= 0) 101 return info->fault; 102 } 103 104 return -ENOENT; 105 } 106 107 enum nvkm_devidx 108 nvkm_top_fault(struct nvkm_device *device, int fault) 109 { 110 struct nvkm_top *top = device->top; 111 struct nvkm_top_device *info; 112 113 list_for_each_entry(info, &top->device, head) { 114 if (info->fault == fault) 115 return info->index; 116 } 117 118 return NVKM_SUBDEV_NR; 119 } 120 121 enum nvkm_devidx 122 nvkm_top_engine(struct nvkm_device *device, int index, int *runl, int *engn) 123 { 124 struct nvkm_top *top = device->top; 125 struct nvkm_top_device *info; 126 int n = 0; 127 128 list_for_each_entry(info, &top->device, head) { 129 if (info->engine >= 0 && info->runlist >= 0 && n++ == index) { 130 *runl = info->runlist; 131 *engn = info->engine; 132 return info->index; 133 } 134 } 135 136 return -ENODEV; 137 } 138 139 static int 140 nvkm_top_oneinit(struct nvkm_subdev *subdev) 141 { 142 struct nvkm_top *top = nvkm_top(subdev); 143 return top->func->oneinit(top); 144 } 145 146 static void * 147 nvkm_top_dtor(struct nvkm_subdev *subdev) 148 { 149 struct nvkm_top *top = nvkm_top(subdev); 150 struct nvkm_top_device *info, *temp; 151 152 list_for_each_entry_safe(info, temp, &top->device, head) { 153 list_del(&info->head); 154 kfree(info); 155 } 156 157 return top; 158 } 159 160 static const struct nvkm_subdev_func 161 nvkm_top = { 162 .dtor = nvkm_top_dtor, 163 .oneinit = nvkm_top_oneinit, 164 }; 165 166 int 167 nvkm_top_new_(const struct nvkm_top_func *func, struct nvkm_device *device, 168 enum nvkm_subdev_type type, int inst, struct nvkm_top **ptop) 169 { 170 struct nvkm_top *top; 171 if (!(top = *ptop = kzalloc(sizeof(*top), GFP_KERNEL))) 172 return -ENOMEM; 173 nvkm_subdev_ctor(&nvkm_top, device, type, inst, &top->subdev); 174 top->func = func; 175 INIT_LIST_HEAD(&top->device); 176 return 0; 177 } 178