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/mem.h> 23 #include <nvif/client.h> 24 25 #include <nvif/if000a.h> 26 27 int 28 nvif_mem_init_map(struct nvif_mmu *mmu, u8 type, u64 size, struct nvif_mem *mem) 29 { 30 int ret = nvif_mem_init(mmu, mmu->mem, NVIF_MEM_MAPPABLE | type, 0, 31 size, NULL, 0, mem); 32 if (ret == 0) { 33 ret = nvif_object_map(&mem->object, NULL, 0); 34 if (ret) 35 nvif_mem_fini(mem); 36 } 37 return ret; 38 } 39 40 void 41 nvif_mem_fini(struct nvif_mem *mem) 42 { 43 nvif_object_fini(&mem->object); 44 } 45 46 int 47 nvif_mem_init_type(struct nvif_mmu *mmu, s32 oclass, int type, u8 page, 48 u64 size, void *argv, u32 argc, struct nvif_mem *mem) 49 { 50 struct nvif_mem_v0 *args; 51 u8 stack[128]; 52 int ret; 53 54 mem->object.client = NULL; 55 if (type < 0) 56 return -EINVAL; 57 58 if (sizeof(*args) + argc > sizeof(stack)) { 59 if (!(args = kmalloc(sizeof(*args) + argc, GFP_KERNEL))) 60 return -ENOMEM; 61 } else { 62 args = (void *)stack; 63 } 64 args->version = 0; 65 args->type = type; 66 args->page = page; 67 args->size = size; 68 memcpy(args->data, argv, argc); 69 70 ret = nvif_object_init(&mmu->object, 0, oclass, args, 71 sizeof(*args) + argc, &mem->object); 72 if (ret == 0) { 73 mem->type = mmu->type[type].type; 74 mem->page = args->page; 75 mem->addr = args->addr; 76 mem->size = args->size; 77 } 78 79 if (args != (void *)stack) 80 kfree(args); 81 return ret; 82 83 } 84 85 int 86 nvif_mem_init(struct nvif_mmu *mmu, s32 oclass, u8 type, u8 page, 87 u64 size, void *argv, u32 argc, struct nvif_mem *mem) 88 { 89 int ret = -EINVAL, i; 90 91 mem->object.client = NULL; 92 93 for (i = 0; ret && i < mmu->type_nr; i++) { 94 if ((mmu->type[i].type & type) == type) { 95 ret = nvif_mem_init_type(mmu, oclass, i, page, size, 96 argv, argc, mem); 97 } 98 } 99 100 return ret; 101 } 102