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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/timer.h>25 26static void27nv41_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,28 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)29{30 u32 data = (addr >> 7) | 0x00000001; /* VALID. */31 while (ptes--) {32 VMM_WO032(pt, vmm, ptei++ * 4, data);33 data += 0x00000020;34 }35}36 37static void38nv41_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,39 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)40{41 VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, nv41_vmm_pgt_pte);42}43 44static void45nv41_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,46 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)47{48#if PAGE_SHIFT == 1249 nvkm_kmap(pt->memory);50 while (ptes--) {51 const u32 data = (*map->dma++ >> 7) | 0x00000001;52 VMM_WO032(pt, vmm, ptei++ * 4, data);53 }54 nvkm_done(pt->memory);55#else56 VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv41_vmm_pgt_pte);57#endif58}59 60static void61nv41_vmm_pgt_unmap(struct nvkm_vmm *vmm,62 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)63{64 VMM_FO032(pt, vmm, ptei * 4, 0, ptes);65}66 67static const struct nvkm_vmm_desc_func68nv41_vmm_desc_pgt = {69 .unmap = nv41_vmm_pgt_unmap,70 .dma = nv41_vmm_pgt_dma,71 .sgl = nv41_vmm_pgt_sgl,72};73 74static const struct nvkm_vmm_desc75nv41_vmm_desc_12[] = {76 { PGT, 17, 4, 0x1000, &nv41_vmm_desc_pgt },77 {}78};79 80static void81nv41_vmm_flush(struct nvkm_vmm *vmm, int level)82{83 struct nvkm_device *device = vmm->mmu->subdev.device;84 85 mutex_lock(&vmm->mmu->mutex);86 nvkm_wr32(device, 0x100810, 0x00000022);87 nvkm_msec(device, 2000,88 if (nvkm_rd32(device, 0x100810) & 0x00000020)89 break;90 );91 nvkm_wr32(device, 0x100810, 0x00000000);92 mutex_unlock(&vmm->mmu->mutex);93}94 95static const struct nvkm_vmm_func96nv41_vmm = {97 .valid = nv04_vmm_valid,98 .flush = nv41_vmm_flush,99 .page = {100 { 12, &nv41_vmm_desc_12[0], NVKM_VMM_PAGE_HOST },101 {}102 }103};104 105int106nv41_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,107 void *argv, u32 argc, struct lock_class_key *key, const char *name,108 struct nvkm_vmm **pvmm)109{110 return nv04_vmm_new_(&nv41_vmm, mmu, 0, managed, addr, size,111 argv, argc, key, name, pvmm);112}113