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 <nvif/if000d.h> 25 #include <nvif/unpack.h> 26 27 static inline void 28 nv04_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 38 static void 39 nv04_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 45 static void 46 nv04_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 == 12 50 nvkm_kmap(pt->memory); 51 while (ptes--) 52 VMM_WO032(pt, vmm, 8 + (ptei++ * 4), *map->dma++ | 0x00000003); 53 nvkm_done(pt->memory); 54 #else 55 VMM_MAP_ITER_DMA(vmm, pt, ptei, ptes, map, nv04_vmm_pgt_pte); 56 #endif 57 } 58 59 static void 60 nv04_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 66 static const struct nvkm_vmm_desc_func 67 nv04_vmm_desc_pgt = { 68 .unmap = nv04_vmm_pgt_unmap, 69 .dma = nv04_vmm_pgt_dma, 70 .sgl = nv04_vmm_pgt_sgl, 71 }; 72 73 static const struct nvkm_vmm_desc 74 nv04_vmm_desc_12[] = { 75 { PGT, 15, 4, 0x1000, &nv04_vmm_desc_pgt }, 76 {} 77 }; 78 79 int 80 nv04_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 92 static const struct nvkm_vmm_func 93 nv04_vmm = { 94 .valid = nv04_vmm_valid, 95 .page = { 96 { 12, &nv04_vmm_desc_12[0], NVKM_VMM_PAGE_HOST }, 97 {} 98 } 99 }; 100 101 int 102 nv04_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 } 119 120 int 121 nv04_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