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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 "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 int32nvkm_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 int57nvkm_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 } else71 return ret;72 73 return 0;74}75 76static int77nvkm_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 } else100 return ret;101 102 return 0;103}104 105static int106nvkm_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 } else127 return ret;128 129 return 0;130}131 132static int133nvkm_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_func147nvkm_ummu = {148 .mthd = nvkm_ummu_mthd,149 .sclass = nvkm_ummu_sclass,150};151 152int153nvkm_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 } else173 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}182