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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 <nvif/mmu.h>23 24#include <nvif/class.h>25#include <nvif/if0008.h>26 27void28nvif_mmu_dtor(struct nvif_mmu *mmu)29{30 if (!nvif_object_constructed(&mmu->object))31 return;32 33 kfree(mmu->kind);34 kfree(mmu->type);35 kfree(mmu->heap);36 nvif_object_dtor(&mmu->object);37}38 39int40nvif_mmu_ctor(struct nvif_object *parent, const char *name, s32 oclass,41 struct nvif_mmu *mmu)42{43 static const struct nvif_mclass mems[] = {44 { NVIF_CLASS_MEM_GF100, -1 },45 { NVIF_CLASS_MEM_NV50 , -1 },46 { NVIF_CLASS_MEM_NV04 , -1 },47 {}48 };49 struct nvif_mmu_v0 args;50 int ret, i;51 52 args.version = 0;53 mmu->heap = NULL;54 mmu->type = NULL;55 mmu->kind = NULL;56 57 ret = nvif_object_ctor(parent, name ? name : "nvifMmu", 0, oclass,58 &args, sizeof(args), &mmu->object);59 if (ret)60 goto done;61 62 mmu->dmabits = args.dmabits;63 mmu->heap_nr = args.heap_nr;64 mmu->type_nr = args.type_nr;65 mmu->kind_nr = args.kind_nr;66 67 ret = nvif_mclass(&mmu->object, mems);68 if (ret < 0)69 goto done;70 mmu->mem = mems[ret].oclass;71 72 mmu->heap = kmalloc_array(mmu->heap_nr, sizeof(*mmu->heap),73 GFP_KERNEL);74 mmu->type = kmalloc_array(mmu->type_nr, sizeof(*mmu->type),75 GFP_KERNEL);76 if (ret = -ENOMEM, !mmu->heap || !mmu->type)77 goto done;78 79 mmu->kind = kmalloc_array(mmu->kind_nr, sizeof(*mmu->kind),80 GFP_KERNEL);81 if (!mmu->kind && mmu->kind_nr)82 goto done;83 84 for (i = 0; i < mmu->heap_nr; i++) {85 struct nvif_mmu_heap_v0 args = { .index = i };86 87 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_HEAP,88 &args, sizeof(args));89 if (ret)90 goto done;91 92 mmu->heap[i].size = args.size;93 }94 95 for (i = 0; i < mmu->type_nr; i++) {96 struct nvif_mmu_type_v0 args = { .index = i };97 98 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_TYPE,99 &args, sizeof(args));100 if (ret)101 goto done;102 103 mmu->type[i].type = 0;104 if (args.vram) mmu->type[i].type |= NVIF_MEM_VRAM;105 if (args.host) mmu->type[i].type |= NVIF_MEM_HOST;106 if (args.comp) mmu->type[i].type |= NVIF_MEM_COMP;107 if (args.disp) mmu->type[i].type |= NVIF_MEM_DISP;108 if (args.kind ) mmu->type[i].type |= NVIF_MEM_KIND;109 if (args.mappable) mmu->type[i].type |= NVIF_MEM_MAPPABLE;110 if (args.coherent) mmu->type[i].type |= NVIF_MEM_COHERENT;111 if (args.uncached) mmu->type[i].type |= NVIF_MEM_UNCACHED;112 mmu->type[i].heap = args.heap;113 }114 115 if (mmu->kind_nr) {116 struct nvif_mmu_kind_v0 *kind;117 size_t argc = struct_size(kind, data, mmu->kind_nr);118 119 if (ret = -ENOMEM, !(kind = kmalloc(argc, GFP_KERNEL)))120 goto done;121 kind->version = 0;122 kind->count = mmu->kind_nr;123 124 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_KIND,125 kind, argc);126 if (ret == 0)127 memcpy(mmu->kind, kind->data, kind->count);128 mmu->kind_inv = kind->kind_inv;129 kfree(kind);130 }131 132done:133 if (ret)134 nvif_mmu_dtor(mmu);135 return ret;136}137