ummu.c (4851B)
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 "ummu.h" 23#include "umem.h" 24#include "uvmm.h" 25 26#include <core/client.h> 27 28#include <nvif/if0008.h> 29#include <nvif/unpack.h> 30 31static int 32nvkm_ummu_sclass(struct nvkm_object *object, int index, 33 struct nvkm_oclass *oclass) 34{ 35 struct nvkm_mmu *mmu = nvkm_ummu(object)->mmu; 36 37 if (mmu->func->mem.user.oclass) { 38 if (index-- == 0) { 39 oclass->base = mmu->func->mem.user; 40 oclass->ctor = nvkm_umem_new; 41 return 0; 42 } 43 } 44 45 if (mmu->func->vmm.user.oclass) { 46 if (index-- == 0) { 47 oclass->base = mmu->func->vmm.user; 48 oclass->ctor = nvkm_uvmm_new; 49 return 0; 50 } 51 } 52 53 return -EINVAL; 54} 55 56static int 57nvkm_ummu_heap(struct nvkm_ummu *ummu, void *argv, u32 argc) 58{ 59 struct nvkm_mmu *mmu = ummu->mmu; 60 union { 61 struct nvif_mmu_heap_v0 v0; 62 } *args = argv; 63 int ret = -ENOSYS; 64 u8 index; 65 66 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) { 67 if ((index = args->v0.index) >= mmu->heap_nr) 68 return -EINVAL; 69 args->v0.size = mmu->heap[index].size; 70 } else 71 return ret; 72 73 return 0; 74} 75 76static int 77nvkm_ummu_type(struct nvkm_ummu *ummu, void *argv, u32 argc) 78{ 79 struct nvkm_mmu *mmu = ummu->mmu; 80 union { 81 struct nvif_mmu_type_v0 v0; 82 } *args = argv; 83 int ret = -ENOSYS; 84 u8 type, index; 85 86 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) { 87 if ((index = args->v0.index) >= mmu->type_nr) 88 return -EINVAL; 89 type = mmu->type[index].type; 90 args->v0.heap = mmu->type[index].heap; 91 args->v0.vram = !!(type & NVKM_MEM_VRAM); 92 args->v0.host = !!(type & NVKM_MEM_HOST); 93 args->v0.comp = !!(type & NVKM_MEM_COMP); 94 args->v0.disp = !!(type & NVKM_MEM_DISP); 95 args->v0.kind = !!(type & NVKM_MEM_KIND); 96 args->v0.mappable = !!(type & NVKM_MEM_MAPPABLE); 97 args->v0.coherent = !!(type & NVKM_MEM_COHERENT); 98 args->v0.uncached = !!(type & NVKM_MEM_UNCACHED); 99 } else 100 return ret; 101 102 return 0; 103} 104 105static int 106nvkm_ummu_kind(struct nvkm_ummu *ummu, void *argv, u32 argc) 107{ 108 struct nvkm_mmu *mmu = ummu->mmu; 109 union { 110 struct nvif_mmu_kind_v0 v0; 111 } *args = argv; 112 const u8 *kind = NULL; 113 int ret = -ENOSYS, count = 0; 114 u8 kind_inv = 0; 115 116 if (mmu->func->kind) 117 kind = mmu->func->kind(mmu, &count, &kind_inv); 118 119 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, true))) { 120 if (argc != args->v0.count * sizeof(*args->v0.data)) 121 return -EINVAL; 122 if (args->v0.count > count) 123 return -EINVAL; 124 args->v0.kind_inv = kind_inv; 125 memcpy(args->v0.data, kind, args->v0.count); 126 } else 127 return ret; 128 129 return 0; 130} 131 132static int 133nvkm_ummu_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc) 134{ 135 struct nvkm_ummu *ummu = nvkm_ummu(object); 136 switch (mthd) { 137 case NVIF_MMU_V0_HEAP: return nvkm_ummu_heap(ummu, argv, argc); 138 case NVIF_MMU_V0_TYPE: return nvkm_ummu_type(ummu, argv, argc); 139 case NVIF_MMU_V0_KIND: return nvkm_ummu_kind(ummu, argv, argc); 140 default: 141 break; 142 } 143 return -EINVAL; 144} 145 146static const struct nvkm_object_func 147nvkm_ummu = { 148 .mthd = nvkm_ummu_mthd, 149 .sclass = nvkm_ummu_sclass, 150}; 151 152int 153nvkm_ummu_new(struct nvkm_device *device, const struct nvkm_oclass *oclass, 154 void *argv, u32 argc, struct nvkm_object **pobject) 155{ 156 union { 157 struct nvif_mmu_v0 v0; 158 } *args = argv; 159 struct nvkm_mmu *mmu = device->mmu; 160 struct nvkm_ummu *ummu; 161 int ret = -ENOSYS, kinds = 0; 162 u8 unused = 0; 163 164 if (mmu->func->kind) 165 mmu->func->kind(mmu, &kinds, &unused); 166 167 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) { 168 args->v0.dmabits = mmu->dma_bits; 169 args->v0.heap_nr = mmu->heap_nr; 170 args->v0.type_nr = mmu->type_nr; 171 args->v0.kind_nr = kinds; 172 } else 173 return ret; 174 175 if (!(ummu = kzalloc(sizeof(*ummu), GFP_KERNEL))) 176 return -ENOMEM; 177 nvkm_object_ctor(&nvkm_ummu, oclass, &ummu->object); 178 ummu->mmu = mmu; 179 *pobject = &ummu->object; 180 return 0; 181}