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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 <nvif/if000d.h>25#include <nvif/unpack.h>26 27static inline void28nv04_vmm_pgt_pte(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,29 u32 ptei, u32 ptes, struct nvkm_vmm_map *map, u64 addr)30{31 u32 data = addr | 0x00000003; /* PRESENT, RW. */32 while (ptes--) {33 VMM_WO032(pt, vmm, 8 + ptei++ * 4, data);34 data += 0x00001000;35 }36}37 38static void39nv04_vmm_pgt_sgl(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,40 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)41{42 VMM_MAP_ITER_SGL(vmm, pt, ptei, ptes, map, nv04_vmm_pgt_pte);43}44 45static void46nv04_vmm_pgt_dma(struct nvkm_vmm *vmm, struct nvkm_mmu_pt *pt,47 u32 ptei, u32 ptes, struct nvkm_vmm_map *map)48{49#if PAGE_SHIFT == 1250 nvkm_kmap(pt->memory);51 while (ptes--)52 VMM_WO032(pt, vmm, 8 + (ptei++ * 4), *map->dma++ | 0x00000003);53 nvkm_done(pt->memory);54#else55 VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv04_vmm_pgt_pte);56#endif57}58 59static void60nv04_vmm_pgt_unmap(struct nvkm_vmm *vmm,61 struct nvkm_mmu_pt *pt, u32 ptei, u32 ptes)62{63 VMM_FO032(pt, vmm, 8 + (ptei * 4), 0, ptes);64}65 66static const struct nvkm_vmm_desc_func67nv04_vmm_desc_pgt = {68 .unmap = nv04_vmm_pgt_unmap,69 .dma = nv04_vmm_pgt_dma,70 .sgl = nv04_vmm_pgt_sgl,71};72 73static const struct nvkm_vmm_desc74nv04_vmm_desc_12[] = {75 { PGT, 15, 4, 0x1000, &nv04_vmm_desc_pgt },76 {}77};78 79int80nv04_vmm_valid(struct nvkm_vmm *vmm, void *argv, u32 argc,81 struct nvkm_vmm_map *map)82{83 union {84 struct nv04_vmm_map_vn vn;85 } *args = argv;86 int ret = -ENOSYS;87 if ((ret = nvif_unvers(ret, &argv, &argc, args->vn)))88 VMM_DEBUG(vmm, "args");89 return ret;90}91 92static const struct nvkm_vmm_func93nv04_vmm = {94 .valid = nv04_vmm_valid,95 .page = {96 { 12, &nv04_vmm_desc_12[0], NVKM_VMM_PAGE_HOST },97 {}98 }99};100 101int102nv04_vmm_new_(const struct nvkm_vmm_func *func, struct nvkm_mmu *mmu,103 u32 pd_header, bool managed, u64 addr, u64 size,104 void *argv, u32 argc, struct lock_class_key *key,105 const char *name, struct nvkm_vmm **pvmm)106{107 union {108 struct nv04_vmm_vn vn;109 } *args = argv;110 int ret;111 112 ret = nvkm_vmm_new_(func, mmu, pd_header, managed, addr, size,113 key, name, pvmm);114 if (ret)115 return ret;116 117 return nvif_unvers(-ENOSYS, &argv, &argc, args->vn);118}119 120int121nv04_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,122 void *argv, u32 argc, struct lock_class_key *key, const char *name,123 struct nvkm_vmm **pvmm)124{125 struct nvkm_memory *mem;126 struct nvkm_vmm *vmm;127 int ret;128 129 ret = nv04_vmm_new_(&nv04_vmm, mmu, 8, managed, addr, size,130 argv, argc, key, name, &vmm);131 *pvmm = vmm;132 if (ret)133 return ret;134 135 mem = vmm->pd->pt[0]->memory;136 nvkm_kmap(mem);137 nvkm_wo32(mem, 0x00000, 0x0002103d); /* PCI, RW, PT, !LN */138 nvkm_wo32(mem, 0x00004, vmm->limit - 1);139 nvkm_done(mem);140 return 0;141}142