1 /* $NetBSD: nouveau_nvkm_subdev_mmu_ummu.c,v 1.2 2021/12/18 23:45:41 riastradh Exp $ */ 2 3 /* 4 * Copyright 2017 Red Hat Inc. 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 */ 24 #include <sys/cdefs.h> 25 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_mmu_ummu.c,v 1.2 2021/12/18 23:45:41 riastradh Exp $"); 26 27 #include "ummu.h" 28 #include "umem.h" 29 #include "uvmm.h" 30 31 #include <core/client.h> 32 33 #include <nvif/if0008.h> 34 #include <nvif/unpack.h> 35 36 static int 37 nvkm_ummu_sclass(struct nvkm_object *object, int index, 38 struct nvkm_oclass *oclass) 39 { 40 struct nvkm_mmu *mmu = nvkm_ummu(object)->mmu; 41 42 if (mmu->func->mem.user.oclass && oclass->client->super) { 43 if (index-- == 0) { 44 oclass->base = mmu->func->mem.user; 45 oclass->ctor = nvkm_umem_new; 46 return 0; 47 } 48 } 49 50 if (mmu->func->vmm.user.oclass) { 51 if (index-- == 0) { 52 oclass->base = mmu->func->vmm.user; 53 oclass->ctor = nvkm_uvmm_new; 54 return 0; 55 } 56 } 57 58 return -EINVAL; 59 } 60 61 static int 62 nvkm_ummu_heap(struct nvkm_ummu *ummu, void *argv, u32 argc) 63 { 64 struct nvkm_mmu *mmu = ummu->mmu; 65 union { 66 struct nvif_mmu_heap_v0 v0; 67 } *args = argv; 68 int ret = -ENOSYS; 69 u8 index; 70 71 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) { 72 if ((index = args->v0.index) >= mmu->heap_nr) 73 return -EINVAL; 74 args->v0.size = mmu->heap[index].size; 75 } else 76 return ret; 77 78 return 0; 79 } 80 81 static int 82 nvkm_ummu_type(struct nvkm_ummu *ummu, void *argv, u32 argc) 83 { 84 struct nvkm_mmu *mmu = ummu->mmu; 85 union { 86 struct nvif_mmu_type_v0 v0; 87 } *args = argv; 88 int ret = -ENOSYS; 89 u8 type, index; 90 91 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) { 92 if ((index = args->v0.index) >= mmu->type_nr) 93 return -EINVAL; 94 type = mmu->type[index].type; 95 args->v0.heap = mmu->type[index].heap; 96 args->v0.vram = !!(type & NVKM_MEM_VRAM); 97 args->v0.host = !!(type & NVKM_MEM_HOST); 98 args->v0.comp = !!(type & NVKM_MEM_COMP); 99 args->v0.disp = !!(type & NVKM_MEM_DISP); 100 args->v0.kind = !!(type & NVKM_MEM_KIND); 101 args->v0.mappable = !!(type & NVKM_MEM_MAPPABLE); 102 args->v0.coherent = !!(type & NVKM_MEM_COHERENT); 103 args->v0.uncached = !!(type & NVKM_MEM_UNCACHED); 104 } else 105 return ret; 106 107 return 0; 108 } 109 110 static int 111 nvkm_ummu_kind(struct nvkm_ummu *ummu, void *argv, u32 argc) 112 { 113 struct nvkm_mmu *mmu = ummu->mmu; 114 union { 115 struct nvif_mmu_kind_v0 v0; 116 } *args = argv; 117 const u8 *kind = NULL; 118 int ret = -ENOSYS, count = 0; 119 u8 kind_inv = 0; 120 121 if (mmu->func->kind) 122 kind = mmu->func->kind(mmu, &count, &kind_inv); 123 124 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, true))) { 125 if (argc != args->v0.count * sizeof(*args->v0.data)) 126 return -EINVAL; 127 if (args->v0.count > count) 128 return -EINVAL; 129 args->v0.kind_inv = kind_inv; 130 memcpy(args->v0.data, kind, args->v0.count); 131 } else 132 return ret; 133 134 return 0; 135 } 136 137 static int 138 nvkm_ummu_mthd(struct nvkm_object *object, u32 mthd, void *argv, u32 argc) 139 { 140 struct nvkm_ummu *ummu = nvkm_ummu(object); 141 switch (mthd) { 142 case NVIF_MMU_V0_HEAP: return nvkm_ummu_heap(ummu, argv, argc); 143 case NVIF_MMU_V0_TYPE: return nvkm_ummu_type(ummu, argv, argc); 144 case NVIF_MMU_V0_KIND: return nvkm_ummu_kind(ummu, argv, argc); 145 default: 146 break; 147 } 148 return -EINVAL; 149 } 150 151 static const struct nvkm_object_func 152 nvkm_ummu = { 153 .mthd = nvkm_ummu_mthd, 154 .sclass = nvkm_ummu_sclass, 155 }; 156 157 int 158 nvkm_ummu_new(struct nvkm_device *device, const struct nvkm_oclass *oclass, 159 void *argv, u32 argc, struct nvkm_object **pobject) 160 { 161 union { 162 struct nvif_mmu_v0 v0; 163 } *args = argv; 164 struct nvkm_mmu *mmu = device->mmu; 165 struct nvkm_ummu *ummu; 166 int ret = -ENOSYS, kinds = 0; 167 u8 unused = 0; 168 169 if (mmu->func->kind) 170 mmu->func->kind(mmu, &kinds, &unused); 171 172 if (!(ret = nvif_unpack(ret, &argv, &argc, args->v0, 0, 0, false))) { 173 args->v0.dmabits = mmu->dma_bits; 174 args->v0.heap_nr = mmu->heap_nr; 175 args->v0.type_nr = mmu->type_nr; 176 args->v0.kind_nr = kinds; 177 } else 178 return ret; 179 180 if (!(ummu = kzalloc(sizeof(*ummu), GFP_KERNEL))) 181 return -ENOMEM; 182 nvkm_object_ctor(&nvkm_ummu, oclass, &ummu->object); 183 ummu->mmu = mmu; 184 *pobject = &ummu->object; 185 return 0; 186 } 187
Indexes created Sat Sep 20 22:09:52 GMT 2025