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 #include "vmm.h" 23 24 #include <subdev/fb.h> 25 #include <subdev/timer.h> 26 #include <engine/gr.h> 27 28 #include <nvif/if500d.h> 29 #include <nvif/unpack.h> 30 31 static inline void 32 nv50_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, 33 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr) 34 { 35 u64 next = addr + map->type, data; 36 u32 pten; 37 int log2blk; 38 39 map->type += ptes * map->ctag; 40 41 while (ptes) { 42 for (log2blk = 7; log2blk >= 0; log2blk--) { 43 pten = 1 << log2blk; 44 if (ptes >= pten && IS_ALIGNED(ptei, pten)) 45 break; 46 } 47 48 data = next | (log2blk << 7); 49 next += pten * map->next; 50 ptes -= pten; 51 52 while (pten--) 53 VMM_WO064(pt, vmm, ptei++ * 8, data); 54 } 55 } 56 57 static void 58 nv50_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, 59 u32 ptei, u32 ptes, struct nvkm_vmm_map *map) 60 { 61 VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, nv50_vmm_pgt_pte); 62 } 63 64 static void 65 nv50_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, 66 u32 ptei, u32 ptes, struct nvkm_vmm_map *map) 67 { 68 if (map->page->shift == PAGE_SHIFT) { 69 VMM_SPAM(vmm, "DMAA %08x %08x PTE(s)", ptei, ptes); 70 nvkm_kmap(pt->memory); 71 while (ptes--) { 72 const u64 data = *map->dma++ + map->type; 73 VMM_WO064(pt, vmm, ptei++ * 8, data); 74 map->type += map->ctag; 75 } 76 nvkm_done(pt->memory); 77 return; 78 } 79 80 VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv50_vmm_pgt_pte); 81 } 82 83 static void 84 nv50_vmm_pgt_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, 85 u32 ptei, u32 ptes, struct nvkm_vmm_map *map) 86 { 87 VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, nv50_vmm_pgt_pte); 88 } 89 90 static void 91 nv50_vmm_pgt_unmap(struct nvkm_vmm *vmm, 92 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes) 93 { 94 VMM_FO064(pt, vmm, ptei * 8, 0ULL, ptes); 95 } 96 97 static const struct nvkm_vmm_desc_func 98 nv50_vmm_pgt = { 99 .unmap = nv50_vmm_pgt_unmap, 100 .mem = nv50_vmm_pgt_mem, 101 .dma = nv50_vmm_pgt_dma, 102 .sgl = nv50_vmm_pgt_sgl, 103 }; 104 105 static bool 106 nv50_vmm_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgt, u64 *pdata) 107 { 108 struct nvkm_mmu_pt *pt; 109 u64 data = 0xdeadcafe00000000ULL; 110 if (pgt && (pt = pgt->pt[0])) { 111 switch (pgt->page) { 112 case 16: data = 0x00000001; break; 113 case 12: data = 0x00000003; 114 switch (nvkm_memory_size(pt->memory)) { 115 case 0x100000: data |= 0x00000000; break; 116 case 0x040000: data |= 0x00000020; break; 117 case 0x020000: data |= 0x00000040; break; 118 case 0x010000: data |= 0x00000060; break; 119 default: 120 WARN_ON(1); 121 return false; 122 } 123 break; 124 default: 125 WARN_ON(1); 126 return false; 127 } 128 129 switch (nvkm_memory_target(pt->memory)) { 130 case NVKM_MEM_TARGET_VRAM: data |= 0x00000000; break; 131 case NVKM_MEM_TARGET_HOST: data |= 0x00000008; break; 132 case NVKM_MEM_TARGET_NCOH: data |= 0x0000000c; break; 133 default: 134 WARN_ON(1); 135 return false; 136 } 137 138 data |= pt->addr; 139 } 140 *pdata = data; 141 return true; 142 } 143 144 static void 145 nv50_vmm_pgd_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei) 146 { 147 struct nvkm_vmm_join *join; 148 u32 pdeo = vmm->mmu->func->vmm.pd_offset + (pdei * 8); 149 u64 data; 150 151 if (!nv50_vmm_pde(vmm, pgd->pde[pdei], &data)) 152 return; 153 154 list_for_each_entry(join, &vmm->join, head) { 155 nvkm_kmap(join->inst); 156 nvkm_wo64(join->inst, pdeo, data); 157 nvkm_done(join->inst); 158 } 159 } 160 161 static const struct nvkm_vmm_desc_func 162 nv50_vmm_pgd = { 163 .pde = nv50_vmm_pgd_pde, 164 }; 165 166 const struct nvkm_vmm_desc 167 nv50_vmm_desc_12[] = { 168 { PGT, 17, 8, 0x1000, &nv50_vmm_pgt }, 169 { PGD, 11, 0, 0x0000, &nv50_vmm_pgd }, 170 {} 171 }; 172 173 const struct nvkm_vmm_desc 174 nv50_vmm_desc_16[] = { 175 { PGT, 13, 8, 0x1000, &nv50_vmm_pgt }, 176 { PGD, 11, 0, 0x0000, &nv50_vmm_pgd }, 177 {} 178 }; 179 180 void 181 nv50_vmm_flush(struct nvkm_vmm *vmm, int level) 182 { 183 struct nvkm_subdev *subdev = &vmm->mmu->subdev; 184 struct nvkm_device *device = subdev->device; 185 int i, id; 186 187 mutex_lock(&vmm->mmu->mutex); 188 for (i = 0; i < NVKM_SUBDEV_NR; i++) { 189 if (!atomic_read(&vmm->engref[i])) 190 continue; 191 192 /* unfortunate hw bug workaround... */ 193 if (i == NVKM_ENGINE_GR && device->gr) { 194 int ret = nvkm_gr_tlb_flush(device->gr); 195 if (ret != -ENODEV) 196 continue; 197 } 198 199 switch (i) { 200 case NVKM_ENGINE_GR : id = 0x00; break; 201 case NVKM_ENGINE_VP : 202 case NVKM_ENGINE_MSPDEC: id = 0x01; break; 203 case NVKM_SUBDEV_BAR : id = 0x06; break; 204 case NVKM_ENGINE_MSPPP : 205 case NVKM_ENGINE_MPEG : id = 0x08; break; 206 case NVKM_ENGINE_BSP : 207 case NVKM_ENGINE_MSVLD : id = 0x09; break; 208 case NVKM_ENGINE_CIPHER: 209 case NVKM_ENGINE_SEC : id = 0x0a; break; 210 case NVKM_ENGINE_CE : id = 0x0d; break; 211 default: 212 continue; 213 } 214 215 nvkm_wr32(device, 0x100c80, (id << 16) | 1); 216 if (nvkm_msec(device, 2000, 217 if (!(nvkm_rd32(device, 0x100c80) & 0x00000001)) 218 break; 219 ) < 0) 220 nvkm_error(subdev, "%s mmu invalidate timeout\n", nvkm_subdev_type[i]); 221 } 222 mutex_unlock(&vmm->mmu->mutex); 223 } 224 225 int 226 nv50_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc, 227 struct nvkm_vmm_map *map) 228 { 229 const struct nvkm_vmm_page *page = map->page; 230 union { 231 struct nv50_vmm_map_vn vn; 232 struct nv50_vmm_map_v0 v0; 233 } *args = argv; 234 struct nvkm_device *device = vmm->mmu->subdev.device; 235 struct nvkm_ram *ram = device->fb->ram; 236 struct nvkm_memory *memory = map->memory; 237 u8 aper, kind, kind_inv, comp, priv, ro; 238 int kindn, ret = -ENOSYS; 239 const u8 *kindm; 240 241 map->type = map->ctag = 0; 242 map->next = 1 << page->shift; 243 244 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) { 245 ro = !!args->v0.ro; 246 priv = !!args->v0.priv; 247 kind = args->v0.kind & 0x7f; 248 comp = args->v0.comp & 0x03; 249 } else 250 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) { 251 ro = 0; 252 priv = 0; 253 kind = 0x00; 254 comp = 0; 255 } else { 256 VMM_DEBUG(vmm, "args"); 257 return ret; 258 } 259 260 switch (nvkm_memory_target(memory)) { 261 case NVKM_MEM_TARGET_VRAM: 262 if (ram->stolen) { 263 map->type |= ram->stolen; 264 aper = 3; 265 } else { 266 aper = 0; 267 } 268 break; 269 case NVKM_MEM_TARGET_HOST: 270 aper = 2; 271 break; 272 case NVKM_MEM_TARGET_NCOH: 273 aper = 3; 274 break; 275 default: 276 WARN_ON(1); 277 return -EINVAL; 278 } 279 280 kindm = vmm->mmu->func->kind(vmm->mmu, &kindn, &kind_inv); 281 if (kind >= kindn || kindm[kind] == kind_inv) { 282 VMM_DEBUG(vmm, "kind %02x", kind); 283 return -EINVAL; 284 } 285 286 if (map->mem && map->mem->type != kindm[kind]) { 287 VMM_DEBUG(vmm, "kind %02x bankswz: %d %d", kind, 288 kindm[kind], map->mem->type); 289 return -EINVAL; 290 } 291 292 if (comp) { 293 u32 tags = (nvkm_memory_size(memory) >> 16) * comp; 294 if (aper != 0 || !(page->type & NVKM_VMM_PAGE_COMP)) { 295 VMM_DEBUG(vmm, "comp %d %02x", aper, page->type); 296 return -EINVAL; 297 } 298 299 ret = nvkm_memory_tags_get(memory, device, tags, NULL, 300 &map->tags); 301 if (ret) { 302 VMM_DEBUG(vmm, "comp %d", ret); 303 return ret; 304 } 305 306 if (map->tags->mn) { 307 u32 tags = map->tags->mn->offset + (map->offset >> 16); 308 map->ctag |= (u64)comp << 49; 309 map->type |= (u64)comp << 47; 310 map->type |= (u64)tags << 49; 311 map->next |= map->ctag; 312 } 313 } 314 315 map->type |= BIT(0); /* Valid. */ 316 map->type |= (u64)ro << 3; 317 map->type |= (u64)aper << 4; 318 map->type |= (u64)priv << 6; 319 map->type |= (u64)kind << 40; 320 return 0; 321 } 322 323 void 324 nv50_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst) 325 { 326 struct nvkm_vmm_join *join; 327 328 list_for_each_entry(join, &vmm->join, head) { 329 if (join->inst == inst) { 330 list_del(&join->head); 331 kfree(join); 332 break; 333 } 334 } 335 } 336 337 int 338 nv50_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst) 339 { 340 const u32 pd_offset = vmm->mmu->func->vmm.pd_offset; 341 struct nvkm_vmm_join *join; 342 int ret = 0; 343 u64 data; 344 u32 pdei; 345 346 if (!(join = kmalloc(sizeof(*join), GFP_KERNEL))) 347 return -ENOMEM; 348 join->inst = inst; 349 list_add_tail(&join->head, &vmm->join); 350 351 nvkm_kmap(join->inst); 352 for (pdei = vmm->start >> 29; pdei <= (vmm->limit - 1) >> 29; pdei++) { 353 if (!nv50_vmm_pde(vmm, vmm->pd->pde[pdei], &data)) { 354 ret = -EINVAL; 355 break; 356 } 357 nvkm_wo64(join->inst, pd_offset + (pdei * 8), data); 358 } 359 nvkm_done(join->inst); 360 return ret; 361 } 362 363 static const struct nvkm_vmm_func 364 nv50_vmm = { 365 .join = nv50_vmm_join, 366 .part = nv50_vmm_part, 367 .valid = nv50_vmm_valid, 368 .flush = nv50_vmm_flush, 369 .page_block = 1 << 29, 370 .page = { 371 { 16, &nv50_vmm_desc_16[0], NVKM_VMM_PAGE_xVxC }, 372 { 12, &nv50_vmm_desc_12[0], NVKM_VMM_PAGE_xVHx }, 373 {} 374 } 375 }; 376 377 int 378 nv50_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size, 379 void *argv, u32 argc, struct lock_class_key *key, const char *name, 380 struct nvkm_vmm **pvmm) 381 { 382 return nv04_vmm_new_(&nv50_vmm, mmu, 0, managed, addr, size, 383 argv, argc, key, name, pvmm); 384 } 385