388 lines · c
1/*2 * Copyright 2017 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * 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 31static inline void32nv50_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 57static void58nv50_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 64static void65nv50_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 83static void84nv50_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 90static void91nv50_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 97static const struct nvkm_vmm_desc_func98nv50_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 105static bool106nv50_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 144static void145nv50_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 161static const struct nvkm_vmm_desc_func162nv50_vmm_pgd = {163 .pde = nv50_vmm_pgd_pde,164};165 166const struct nvkm_vmm_desc167nv50_vmm_desc_12[] = {168 { PGT, 17, 8, 0x1000, &nv50_vmm_pgt },169 { PGD, 11, 0, 0x0000, &nv50_vmm_pgd },170 {}171};172 173const struct nvkm_vmm_desc174nv50_vmm_desc_16[] = {175 { PGT, 13, 8, 0x1000, &nv50_vmm_pgt },176 { PGD, 11, 0, 0x0000, &nv50_vmm_pgd },177 {}178};179 180void181nv50_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 225int226nv50_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 } else250 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 if (!map->no_comp) {300 ret = nvkm_memory_tags_get(memory, device, tags, NULL,301 &map->tags);302 if (ret) {303 VMM_DEBUG(vmm, "comp %d", ret);304 return ret;305 }306 307 if (map->tags->mn) {308 u32 tags = map->tags->mn->offset +309 (map->offset >> 16);310 map->ctag |= (u64)comp << 49;311 map->type |= (u64)comp << 47;312 map->type |= (u64)tags << 49;313 map->next |= map->ctag;314 }315 }316 }317 318 map->type |= BIT(0); /* Valid. */319 map->type |= (u64)ro << 3;320 map->type |= (u64)aper << 4;321 map->type |= (u64)priv << 6;322 map->type |= (u64)kind << 40;323 return 0;324}325 326void327nv50_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)328{329 struct nvkm_vmm_join *join;330 331 list_for_each_entry(join, &vmm->join, head) {332 if (join->inst == inst) {333 list_del(&join->head);334 kfree(join);335 break;336 }337 }338}339 340int341nv50_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)342{343 const u32 pd_offset = vmm->mmu->func->vmm.pd_offset;344 struct nvkm_vmm_join *join;345 int ret = 0;346 u64 data;347 u32 pdei;348 349 if (!(join = kmalloc(sizeof(*join), GFP_KERNEL)))350 return -ENOMEM;351 join->inst = inst;352 list_add_tail(&join->head, &vmm->join);353 354 nvkm_kmap(join->inst);355 for (pdei = vmm->start >> 29; pdei <= (vmm->limit - 1) >> 29; pdei++) {356 if (!nv50_vmm_pde(vmm, vmm->pd->pde[pdei], &data)) {357 ret = -EINVAL;358 break;359 }360 nvkm_wo64(join->inst, pd_offset + (pdei * 8), data);361 }362 nvkm_done(join->inst);363 return ret;364}365 366static const struct nvkm_vmm_func367nv50_vmm = {368 .join = nv50_vmm_join,369 .part = nv50_vmm_part,370 .valid = nv50_vmm_valid,371 .flush = nv50_vmm_flush,372 .page_block = 1 << 29,373 .page = {374 { 16, &nv50_vmm_desc_16[0], NVKM_VMM_PAGE_xVxC },375 { 12, &nv50_vmm_desc_12[0], NVKM_VMM_PAGE_xVHx },376 {}377 }378};379 380int381nv50_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,382 void *argv, u32 argc, struct lock_class_key *key, const char *name,383 struct nvkm_vmm **pvmm)384{385 return nv04_vmm_new_(&nv50_vmm, mmu, 0, managed, addr, size,386 argv, argc, key, name, pvmm);387}388