1 /* $NetBSD: nouveau_nvkm_subdev_mmu_vmmnv50.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $ */ 2 3 /* 4 * Copyright 2017 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 #include <sys/cdefs.h> 25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_mmu_vmmnv50.c,v 1.3 2021/12/19 10:51:58 riastradh Exp $"); 26 27 #include "vmm.h" 28 29 #include <subdev/fb.h> 30 #include <subdev/timer.h> 31 #include <engine/gr.h> 32 33 #include <nvif/if500d.h> 34 #include <nvif/unpack.h> 35 36 static inline void 37 nv50_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, 38 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr) 39 { 40 u64 next = addr + map->type, data; 41 u32 pten; 42 int log2blk; 43 44 map->type += ptes * map->ctag; 45 46 while (ptes) { 47 for (log2blk = 7; log2blk >= 0; log2blk--) { 48 pten = 1 << log2blk; 49 if (ptes >= pten && IS_ALIGNED(ptei, pten)) 50 break; 51 } 52 53 data = next | (log2blk << 7); 54 next += pten * map->next; 55 ptes -= pten; 56 57 while (pten--) 58 VMM_WO064(pt, vmm, ptei++ * 8, data); 59 } 60 } 61 62 #ifndef __NetBSD__ 63 static void 64 nv50_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, 65 u32 ptei, u32 ptes, struct nvkm_vmm_map *map) 66 { 67 VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, nv50_vmm_pgt_pte); 68 } 69 #endif 70 71 static void 72 nv50_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, 73 u32 ptei, u32 ptes, struct nvkm_vmm_map *map) 74 { 75 if (map->page->shift == PAGE_SHIFT) { 76 VMM_SPAM(vmm, "DMAA %08x %08x PTE(s)", ptei, ptes); 77 nvkm_kmap(pt->memory); 78 while (ptes--) { 79 const u64 data = *map->dma++ + map->type; 80 VMM_WO064(pt, vmm, ptei++ * 8, data); 81 map->type += map->ctag; 82 } 83 nvkm_done(pt->memory); 84 return; 85 } 86 87 VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv50_vmm_pgt_pte); 88 } 89 90 static void 91 nv50_vmm_pgt_mem(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt, 92 u32 ptei, u32 ptes, struct nvkm_vmm_map *map) 93 { 94 VMM_MAP_ITER_MEM(vmm, pt, ptei, ptes, map, nv50_vmm_pgt_pte); 95 } 96 97 static void 98 nv50_vmm_pgt_unmap(struct nvkm_vmm *vmm, 99 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes) 100 { 101 VMM_FO064(pt, vmm, ptei * 8, 0ULL, ptes); 102 } 103 104 static const struct nvkm_vmm_desc_func 105 nv50_vmm_pgt = { 106 .unmap = nv50_vmm_pgt_unmap, 107 .mem = nv50_vmm_pgt_mem, 108 .dma = nv50_vmm_pgt_dma, 109 #ifndef __NetBSD__ 110 .sgl = nv50_vmm_pgt_sgl, 111 #endif 112 }; 113 114 static bool 115 nv50_vmm_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgt, u64 *pdata) 116 { 117 struct nvkm_mmu_pt *pt; 118 u64 data = 0xdeadcafe00000000ULL; 119 if (pgt && (pt = pgt->pt[0])) { 120 switch (pgt->page) { 121 case 16: data = 0x00000001; break; 122 case 12: data = 0x00000003; 123 switch (nvkm_memory_size(pt->memory)) { 124 case 0x100000: data |= 0x00000000; break; 125 case 0x040000: data |= 0x00000020; break; 126 case 0x020000: data |= 0x00000040; break; 127 case 0x010000: data |= 0x00000060; break; 128 default: 129 WARN_ON(1); 130 return false; 131 } 132 break; 133 default: 134 WARN_ON(1); 135 return false; 136 } 137 138 switch (nvkm_memory_target(pt->memory)) { 139 case NVKM_MEM_TARGET_VRAM: data |= 0x00000000; break; 140 case NVKM_MEM_TARGET_HOST: data |= 0x00000008; break; 141 case NVKM_MEM_TARGET_NCOH: data |= 0x0000000c; break; 142 default: 143 WARN_ON(1); 144 return false; 145 } 146 147 data |= pt->addr; 148 } 149 *pdata = data; 150 return true; 151 } 152 153 static void 154 nv50_vmm_pgd_pde(struct nvkm_vmm *vmm, struct nvkm_vmm_pt *pgd, u32 pdei) 155 { 156 struct nvkm_vmm_join *join; 157 u32 pdeo = vmm->mmu->func->vmm.pd_offset + (pdei * 8); 158 u64 data; 159 160 if (!nv50_vmm_pde(vmm, pgd->pde[pdei], &data)) 161 return; 162 163 list_for_each_entry(join, &vmm->join, head) { 164 nvkm_kmap(join->inst); 165 nvkm_wo64(join->inst, pdeo, data); 166 nvkm_done(join->inst); 167 } 168 } 169 170 static const struct nvkm_vmm_desc_func 171 nv50_vmm_pgd = { 172 .pde = nv50_vmm_pgd_pde, 173 }; 174 175 const struct nvkm_vmm_desc 176 nv50_vmm_desc_12[] = { 177 { PGT, 17, 8, 0x1000, &nv50_vmm_pgt }, 178 { PGD, 11, 0, 0x0000, &nv50_vmm_pgd }, 179 {} 180 }; 181 182 const struct nvkm_vmm_desc 183 nv50_vmm_desc_16[] = { 184 { PGT, 13, 8, 0x1000, &nv50_vmm_pgt }, 185 { PGD, 11, 0, 0x0000, &nv50_vmm_pgd }, 186 {} 187 }; 188 189 void 190 nv50_vmm_flush(struct nvkm_vmm *vmm, int level) 191 { 192 struct nvkm_subdev *subdev = &vmm->mmu->subdev; 193 struct nvkm_device *device = subdev->device; 194 int i, id; 195 196 mutex_lock(&subdev->mutex); 197 for (i = 0; i < NVKM_SUBDEV_NR; i++) { 198 if (!atomic_read(&vmm->engref[i])) 199 continue; 200 201 /* unfortunate hw bug workaround... */ 202 if (i == NVKM_ENGINE_GR && device->gr) { 203 int ret = nvkm_gr_tlb_flush(device->gr); 204 if (ret != -ENODEV) 205 continue; 206 } 207 208 switch (i) { 209 case NVKM_ENGINE_GR : id = 0x00; break; 210 case NVKM_ENGINE_VP : 211 case NVKM_ENGINE_MSPDEC: id = 0x01; break; 212 case NVKM_SUBDEV_BAR : id = 0x06; break; 213 case NVKM_ENGINE_MSPPP : 214 case NVKM_ENGINE_MPEG : id = 0x08; break; 215 case NVKM_ENGINE_BSP : 216 case NVKM_ENGINE_MSVLD : id = 0x09; break; 217 case NVKM_ENGINE_CIPHER: 218 case NVKM_ENGINE_SEC : id = 0x0a; break; 219 case NVKM_ENGINE_CE0 : id = 0x0d; break; 220 default: 221 continue; 222 } 223 224 nvkm_wr32(device, 0x100c80, (id << 16) | 1); 225 if (nvkm_msec(device, 2000, 226 if (!(nvkm_rd32(device, 0x100c80) & 0x00000001)) 227 break; 228 ) < 0) 229 nvkm_error(subdev, "%s mmu invalidate timeout\n", 230 nvkm_subdev_name[i]); 231 } 232 mutex_unlock(&subdev->mutex); 233 } 234 235 int 236 nv50_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc, 237 struct nvkm_vmm_map *map) 238 { 239 const struct nvkm_vmm_page *page = map->page; 240 union { 241 struct nv50_vmm_map_vn vn; 242 struct nv50_vmm_map_v0 v0; 243 } *args = argv; 244 struct nvkm_device *device = vmm->mmu->subdev.device; 245 struct nvkm_ram *ram = device->fb->ram; 246 struct nvkm_memory *memory = map->memory; 247 u8 aper, kind, kind_inv, comp, priv, ro; 248 int kindn, ret = -ENOSYS; 249 const u8 *kindm; 250 251 map->type = map->ctag = 0; 252 map->next = 1 << page->shift; 253 254 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) { 255 ro = !!args->v0.ro; 256 priv = !!args->v0.priv; 257 kind = args->v0.kind & 0x7f; 258 comp = args->v0.comp & 0x03; 259 } else 260 if (!(ret = nvif_unvers(ret, &argv, &argc, args->vn))) { 261 ro = 0; 262 priv = 0; 263 kind = 0x00; 264 comp = 0; 265 } else { 266 VMM_DEBUG(vmm, "args"); 267 return ret; 268 } 269 270 switch (nvkm_memory_target(memory)) { 271 case NVKM_MEM_TARGET_VRAM: 272 if (ram->stolen) { 273 map->type |= ram->stolen; 274 aper = 3; 275 } else { 276 aper = 0; 277 } 278 break; 279 case NVKM_MEM_TARGET_HOST: 280 aper = 2; 281 break; 282 case NVKM_MEM_TARGET_NCOH: 283 aper = 3; 284 break; 285 default: 286 WARN_ON(1); 287 return -EINVAL; 288 } 289 290 kindm = vmm->mmu->func->kind(vmm->mmu, &kindn, &kind_inv); 291 if (kind >= kindn || kindm[kind] == kind_inv) { 292 VMM_DEBUG(vmm, "kind %02x", kind); 293 return -EINVAL; 294 } 295 296 if (map->mem && map->mem->type != kindm[kind]) { 297 VMM_DEBUG(vmm, "kind %02x bankswz: %d %d", kind, 298 kindm[kind], map->mem->type); 299 return -EINVAL; 300 } 301 302 if (comp) { 303 u32 tags = (nvkm_memory_size(memory) >> 16) * comp; 304 if (aper != 0 || !(page->type & NVKM_VMM_PAGE_COMP)) { 305 VMM_DEBUG(vmm, "comp %d %02x", aper, page->type); 306 return -EINVAL; 307 } 308 309 ret = nvkm_memory_tags_get(memory, device, tags, NULL, 310 &map->tags); 311 if (ret) { 312 VMM_DEBUG(vmm, "comp %d", ret); 313 return ret; 314 } 315 316 if (map->tags->mn) { 317 u32 tags = map->tags->mn->offset + (map->offset >> 16); 318 map->ctag |= (u64)comp << 49; 319 map->type |= (u64)comp << 47; 320 map->type |= (u64)tags << 49; 321 map->next |= map->ctag; 322 } 323 } 324 325 map->type |= BIT(0); /* Valid. */ 326 map->type |= (u64)ro << 3; 327 map->type |= (u64)aper << 4; 328 map->type |= (u64)priv << 6; 329 map->type |= (u64)kind << 40; 330 return 0; 331 } 332 333 void 334 nv50_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst) 335 { 336 struct nvkm_vmm_join *join; 337 338 list_for_each_entry(join, &vmm->join, head) { 339 if (join->inst == inst) { 340 list_del(&join->head); 341 kfree(join); 342 break; 343 } 344 } 345 } 346 347 int 348 nv50_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst) 349 { 350 const u32 pd_offset = vmm->mmu->func->vmm.pd_offset; 351 struct nvkm_vmm_join *join; 352 int ret = 0; 353 u64 data; 354 u32 pdei; 355 356 if (!(join = kmalloc(sizeof(*join), GFP_KERNEL))) 357 return -ENOMEM; 358 join->inst = inst; 359 list_add_tail(&join->head, &vmm->join); 360 361 nvkm_kmap(join->inst); 362 for (pdei = vmm->start >> 29; pdei <= (vmm->limit - 1) >> 29; pdei++) { 363 if (!nv50_vmm_pde(vmm, vmm->pd->pde[pdei], &data)) { 364 ret = -EINVAL; 365 break; 366 } 367 nvkm_wo64(join->inst, pd_offset + (pdei * 8), data); 368 } 369 nvkm_done(join->inst); 370 return ret; 371 } 372 373 static const struct nvkm_vmm_func 374 nv50_vmm = { 375 .join = nv50_vmm_join, 376 .part = nv50_vmm_part, 377 .valid = nv50_vmm_valid, 378 .flush = nv50_vmm_flush, 379 .page_block = 1 << 29, 380 .page = { 381 { 16, &nv50_vmm_desc_16[0], NVKM_VMM_PAGE_xVxC }, 382 { 12, &nv50_vmm_desc_12[0], NVKM_VMM_PAGE_xVHx }, 383 {} 384 } 385 }; 386 387 int 388 nv50_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size, 389 void *argv, u32 argc, struct lock_class_key *key, const char *name, 390 struct nvkm_vmm **pvmm) 391 { 392 return nv04_vmm_new_(&nv50_vmm, mmu, 0, managed, addr, size, 393 argv, argc, key, name, pvmm); 394 } 395
Indexes created Tue Sep 23 02:09:52 GMT 2025