1 /* 2 * Copyright 2012 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 23 */ 24 #include "priv.h" 25 26 #include <core/memory.h> 27 #include <subdev/bar.h> 28 29 /****************************************************************************** 30 * instmem object base implementation 31 *****************************************************************************/ 32 #define nvkm_instobj(p) container_of((p), struct nvkm_instobj, memory) 33 34 struct nvkm_instobj { 35 struct nvkm_memory memory; 36 struct nvkm_memory *parent; 37 struct nvkm_instmem *imem; 38 struct list_head head; 39 u32 *suspend; 40 void __iomem *map; 41 }; 42 43 static enum nvkm_memory_target 44 nvkm_instobj_target(struct nvkm_memory *memory) 45 { 46 memory = nvkm_instobj(memory)->parent; 47 return nvkm_memory_target(memory); 48 } 49 50 static u64 51 nvkm_instobj_addr(struct nvkm_memory *memory) 52 { 53 memory = nvkm_instobj(memory)->parent; 54 return nvkm_memory_addr(memory); 55 } 56 57 static u64 58 nvkm_instobj_size(struct nvkm_memory *memory) 59 { 60 memory = nvkm_instobj(memory)->parent; 61 return nvkm_memory_size(memory); 62 } 63 64 static void 65 nvkm_instobj_release(struct nvkm_memory *memory) 66 { 67 struct nvkm_instobj *iobj = nvkm_instobj(memory); 68 struct nvkm_bar *bar = iobj->imem->subdev.device->bar; 69 if (bar && bar->flush) 70 bar->flush(bar); 71 } 72 73 static void __iomem * 74 nvkm_instobj_acquire(struct nvkm_memory *memory) 75 { 76 return nvkm_instobj(memory)->map; 77 } 78 79 static u32 80 nvkm_instobj_rd32(struct nvkm_memory *memory, u64 offset) 81 { 82 return ioread32_native(nvkm_instobj(memory)->map + offset); 83 } 84 85 static void 86 nvkm_instobj_wr32(struct nvkm_memory *memory, u64 offset, u32 data) 87 { 88 iowrite32_native(data, nvkm_instobj(memory)->map + offset); 89 } 90 91 static void 92 nvkm_instobj_map(struct nvkm_memory *memory, struct nvkm_vma *vma, u64 offset) 93 { 94 memory = nvkm_instobj(memory)->parent; 95 nvkm_memory_map(memory, vma, offset); 96 } 97 98 static void * 99 nvkm_instobj_dtor(struct nvkm_memory *memory) 100 { 101 struct nvkm_instobj *iobj = nvkm_instobj(memory); 102 list_del(&iobj->head); 103 nvkm_memory_del(&iobj->parent); 104 return iobj; 105 } 106 107 const struct nvkm_memory_func 108 nvkm_instobj_func = { 109 .dtor = nvkm_instobj_dtor, 110 .target = nvkm_instobj_target, 111 .addr = nvkm_instobj_addr, 112 .size = nvkm_instobj_size, 113 .acquire = nvkm_instobj_acquire, 114 .release = nvkm_instobj_release, 115 .rd32 = nvkm_instobj_rd32, 116 .wr32 = nvkm_instobj_wr32, 117 .map = nvkm_instobj_map, 118 }; 119 120 static void 121 nvkm_instobj_boot(struct nvkm_memory *memory, struct nvkm_vm *vm) 122 { 123 memory = nvkm_instobj(memory)->parent; 124 nvkm_memory_boot(memory, vm); 125 } 126 127 static void 128 nvkm_instobj_release_slow(struct nvkm_memory *memory) 129 { 130 struct nvkm_instobj *iobj = nvkm_instobj(memory); 131 nvkm_instobj_release(memory); 132 nvkm_done(iobj->parent); 133 } 134 135 static void __iomem * 136 nvkm_instobj_acquire_slow(struct nvkm_memory *memory) 137 { 138 struct nvkm_instobj *iobj = nvkm_instobj(memory); 139 iobj->map = nvkm_kmap(iobj->parent); 140 if (iobj->map) 141 memory->func = &nvkm_instobj_func; 142 return iobj->map; 143 } 144 145 static u32 146 nvkm_instobj_rd32_slow(struct nvkm_memory *memory, u64 offset) 147 { 148 struct nvkm_instobj *iobj = nvkm_instobj(memory); 149 return nvkm_ro32(iobj->parent, offset); 150 } 151 152 static void 153 nvkm_instobj_wr32_slow(struct nvkm_memory *memory, u64 offset, u32 data) 154 { 155 struct nvkm_instobj *iobj = nvkm_instobj(memory); 156 return nvkm_wo32(iobj->parent, offset, data); 157 } 158 159 const struct nvkm_memory_func 160 nvkm_instobj_func_slow = { 161 .dtor = nvkm_instobj_dtor, 162 .target = nvkm_instobj_target, 163 .addr = nvkm_instobj_addr, 164 .size = nvkm_instobj_size, 165 .boot = nvkm_instobj_boot, 166 .acquire = nvkm_instobj_acquire_slow, 167 .release = nvkm_instobj_release_slow, 168 .rd32 = nvkm_instobj_rd32_slow, 169 .wr32 = nvkm_instobj_wr32_slow, 170 .map = nvkm_instobj_map, 171 }; 172 173 static int 174 nvkm_instobj_new(struct nvkm_instmem *imem, u32 size, u32 align, bool zero, 175 struct nvkm_memory **pmemory) 176 { 177 struct nvkm_instmem_impl *impl = (void *)imem->subdev.object.oclass; 178 struct nvkm_memory *memory; 179 struct nvkm_instobj *iobj; 180 u32 offset; 181 int ret; 182 183 ret = impl->memory_new(imem, size, align, zero, &memory); 184 if (ret) 185 goto done; 186 187 if (!impl->persistent) { 188 if (!(iobj = kzalloc(sizeof(*iobj), GFP_KERNEL))) { 189 ret = -ENOMEM; 190 goto done; 191 } 192 193 nvkm_memory_ctor(&nvkm_instobj_func_slow, &iobj->memory); 194 iobj->parent = memory; 195 iobj->imem = imem; 196 list_add_tail(&iobj->head, &imem->list); 197 memory = &iobj->memory; 198 } 199 200 if (!impl->zero && zero) { 201 void __iomem *map = nvkm_kmap(memory); 202 if (unlikely(!map)) { 203 for (offset = 0; offset < size; offset += 4) 204 nvkm_wo32(memory, offset, 0x00000000); 205 } else { 206 memset_io(map, 0x00, size); 207 } 208 nvkm_done(memory); 209 } 210 211 done: 212 if (ret) 213 nvkm_memory_del(&memory); 214 *pmemory = memory; 215 return ret; 216 } 217 218 /****************************************************************************** 219 * instmem subdev base implementation 220 *****************************************************************************/ 221 222 int 223 _nvkm_instmem_fini(struct nvkm_object *object, bool suspend) 224 { 225 struct nvkm_instmem *imem = (void *)object; 226 struct nvkm_instobj *iobj; 227 int i; 228 229 if (suspend) { 230 list_for_each_entry(iobj, &imem->list, head) { 231 struct nvkm_memory *memory = iobj->parent; 232 u64 size = nvkm_memory_size(memory); 233 234 iobj->suspend = vmalloc(size); 235 if (!iobj->suspend) 236 return -ENOMEM; 237 238 for (i = 0; i < size; i += 4) 239 iobj->suspend[i / 4] = nvkm_ro32(memory, i); 240 } 241 } 242 243 return nvkm_subdev_fini_old(&imem->subdev, suspend); 244 } 245 246 int 247 _nvkm_instmem_init(struct nvkm_object *object) 248 { 249 struct nvkm_instmem *imem = (void *)object; 250 struct nvkm_instobj *iobj; 251 int ret, i; 252 253 ret = nvkm_subdev_init_old(&imem->subdev); 254 if (ret) 255 return ret; 256 257 list_for_each_entry(iobj, &imem->list, head) { 258 if (iobj->suspend) { 259 struct nvkm_memory *memory = iobj->parent; 260 u64 size = nvkm_memory_size(memory); 261 for (i = 0; i < size; i += 4) 262 nvkm_wo32(memory, i, iobj->suspend[i / 4]); 263 vfree(iobj->suspend); 264 iobj->suspend = NULL; 265 } 266 } 267 268 return 0; 269 } 270 271 int 272 nvkm_instmem_create_(struct nvkm_object *parent, struct nvkm_object *engine, 273 struct nvkm_oclass *oclass, int length, void **pobject) 274 { 275 struct nvkm_device *device = (void *)parent; 276 struct nvkm_instmem *imem; 277 int ret; 278 279 ret = nvkm_subdev_create_(parent, engine, oclass, 0, "INSTMEM", 280 "instmem", length, pobject); 281 imem = *pobject; 282 if (ret) 283 return ret; 284 285 device->imem = imem; 286 287 INIT_LIST_HEAD(&imem->list); 288 imem->alloc = nvkm_instobj_new; 289 return 0; 290 } 291