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_fini(struct nvif_mmu *mmu) 29 { 30 kfree(mmu->kind); 31 kfree(mmu->type); 32 kfree(mmu->heap); 33 nvif_object_fini(&mmu->object); 34 } 35 36 int 37 nvif_mmu_init(struct nvif_object *parent, s32 oclass, struct nvif_mmu *mmu) 38 { 39 struct nvif_mmu_v0 args; 40 int ret, i; 41 42 args.version = 0; 43 mmu->heap = NULL; 44 mmu->type = NULL; 45 mmu->kind = NULL; 46 47 ret = nvif_object_init(parent, 0, oclass, &args, sizeof(args), 48 &mmu->object); 49 if (ret) 50 goto done; 51 52 mmu->dmabits = args.dmabits; 53 mmu->heap_nr = args.heap_nr; 54 mmu->type_nr = args.type_nr; 55 mmu->kind_nr = args.kind_nr; 56 57 mmu->heap = kmalloc(sizeof(*mmu->heap) * mmu->heap_nr, GFP_KERNEL); 58 mmu->type = kmalloc(sizeof(*mmu->type) * mmu->type_nr, GFP_KERNEL); 59 if (ret = -ENOMEM, !mmu->heap || !mmu->type) 60 goto done; 61 62 mmu->kind = kmalloc(sizeof(*mmu->kind) * mmu->kind_nr, GFP_KERNEL); 63 if (!mmu->kind && mmu->kind_nr) 64 goto done; 65 66 for (i = 0; i < mmu->heap_nr; i++) { 67 struct nvif_mmu_heap_v0 args = { .index = i }; 68 69 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_HEAP, 70 &args, sizeof(args)); 71 if (ret) 72 goto done; 73 74 mmu->heap[i].size = args.size; 75 } 76 77 for (i = 0; i < mmu->type_nr; i++) { 78 struct nvif_mmu_type_v0 args = { .index = i }; 79 80 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_TYPE, 81 &args, sizeof(args)); 82 if (ret) 83 goto done; 84 85 mmu->type[i].type = 0; 86 if (args.vram) mmu->type[i].type |= NVIF_MEM_VRAM; 87 if (args.host) mmu->type[i].type |= NVIF_MEM_HOST; 88 if (args.comp) mmu->type[i].type |= NVIF_MEM_COMP; 89 if (args.disp) mmu->type[i].type |= NVIF_MEM_DISP; 90 if (args.kind ) mmu->type[i].type |= NVIF_MEM_KIND; 91 if (args.mappable) mmu->type[i].type |= NVIF_MEM_MAPPABLE; 92 if (args.coherent) mmu->type[i].type |= NVIF_MEM_COHERENT; 93 if (args.uncached) mmu->type[i].type |= NVIF_MEM_UNCACHED; 94 mmu->type[i].heap = args.heap; 95 } 96 97 if (mmu->kind_nr) { 98 struct nvif_mmu_kind_v0 *kind; 99 u32 argc = sizeof(*kind) + sizeof(*kind->data) * mmu->kind_nr; 100 101 if (ret = -ENOMEM, !(kind = kmalloc(argc, GFP_KERNEL))) 102 goto done; 103 kind->version = 0; 104 kind->count = mmu->kind_nr; 105 106 ret = nvif_object_mthd(&mmu->object, NVIF_MMU_V0_KIND, 107 kind, argc); 108 if (ret == 0) 109 memcpy(mmu->kind, kind->data, kind->count); 110 kfree(kind); 111 } 112 113 done: 114 if (ret) 115 nvif_mmu_fini(mmu); 116 return ret; 117 } 118