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 <nvif/mmu.h> 23 24 #include <nvif/class.h> 25 #include <nvif/if0008.h> 26 27 void 28 nvif_mmu_dtor(struct nvif_mmu *mmu) 29 { 30 kfree(mmu->kind); 31 kfree(mmu->type); 32 kfree(mmu->heap); 33 nvif_object_dtor(&mmu->object); 34 } 35 36 int 37 nvif_mmu_ctor(struct nvif_object *parent, const char *name, s32 oclass, 38 struct nvif_mmu *mmu) 39 { 40 static const struct nvif_mclass mems[] = { 41 { NVIF_CLASS_MEM_GF100, -1 }, 42 { NVIF_CLASS_MEM_NV50 , -1 }, 43 { NVIF_CLASS_MEM_NV04 , -1 }, 44 {} 45 }; 46 struct nvif_mmu_v0 args; 47 int ret, i; 48 49 args.version = 0; 50 mmu->heap = NULL; 51 mmu->type = NULL; 52 mmu->kind = NULL; 53 54 ret = nvif_object_ctor(parent, name ? name : "nvifMmu", 0, oclass, 55 &args, sizeof(args), &mmu->object); 56 if (ret) 57 goto done; 58 59 mmu->dmabits = args.dmabits; 60 mmu->heap_nr = args.heap_nr; 61 mmu->type_nr = args.type_nr; 62 mmu->kind_nr = args.kind_nr; 63 64 ret = nvif_mclass(&mmu->object, mems); 65 if (ret < 0) 66 goto done; 67 mmu->mem = mems[ret].oclass; 68 69 mmu->heap = kmalloc_array(mmu->heap_nr, sizeof(*mmu->heap), 70 GFP_KERNEL); 71 mmu->type = kmalloc_array(mmu->type_nr, sizeof(*mmu->type), 72 GFP_KERNEL); 73 if (ret = -ENOMEM, !mmu->heap || !mmu->type) 74 goto done; 75 76 mmu->kind = kmalloc_array(mmu->kind_nr, sizeof(*mmu->kind), 77 GFP_KERNEL); 78 if (!mmu->kind && mmu->kind_nr) 79 goto done; 80 81 for (i = 0; i < mmu->heap_nr; i++) { 82 struct nvif_mmu_heap_v0 args = { .index = i }; 83 84 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_HEAP, 85 &args, sizeof(args)); 86 if (ret) 87 goto done; 88 89 mmu->heap[i].size = args.size; 90 } 91 92 for (i = 0; i < mmu->type_nr; i++) { 93 struct nvif_mmu_type_v0 args = { .index = i }; 94 95 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_TYPE, 96 &args, sizeof(args)); 97 if (ret) 98 goto done; 99 100 mmu->type[i].type = 0; 101 if (args.vram) mmu->type[i].type |= NVIF_MEM_VRAM; 102 if (args.host) mmu->type[i].type |= NVIF_MEM_HOST; 103 if (args.comp) mmu->type[i].type |= NVIF_MEM_COMP; 104 if (args.disp) mmu->type[i].type |= NVIF_MEM_DISP; 105 if (args.kind ) mmu->type[i].type |= NVIF_MEM_KIND; 106 if (args.mappable) mmu->type[i].type |= NVIF_MEM_MAPPABLE; 107 if (args.coherent) mmu->type[i].type |= NVIF_MEM_COHERENT; 108 if (args.uncached) mmu->type[i].type |= NVIF_MEM_UNCACHED; 109 mmu->type[i].heap = args.heap; 110 } 111 112 if (mmu->kind_nr) { 113 struct nvif_mmu_kind_v0 *kind; 114 size_t argc = struct_size(kind, data, mmu->kind_nr); 115 116 if (ret = -ENOMEM, !(kind = kmalloc(argc, GFP_KERNEL))) 117 goto done; 118 kind->version = 0; 119 kind->count = mmu->kind_nr; 120 121 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_KIND, 122 kind, argc); 123 if (ret == 0) 124 memcpy(mmu->kind, kind->data, kind->count); 125 mmu->kind_inv = kind->kind_inv; 126 kfree(kind); 127 } 128 129 done: 130 if (ret) 131 nvif_mmu_dtor(mmu); 132 return ret; 133 } 134