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_ctor_map(struct nvif_mmu *mmu, const char *name, u8 type, u64 size, 29 struct nvif_mem *mem) 30 { 31 int ret = nvif_mem_ctor(mmu, name, mmu->mem, NVIF_MEM_MAPPABLE | type, 32 0, size, NULL, 0, mem); 33 if (ret == 0) { 34 ret = nvif_object_map(&mem->object, NULL, 0); 35 if (ret) 36 nvif_mem_dtor(mem); 37 } 38 return ret; 39 } 40 41 void 42 nvif_mem_dtor(struct nvif_mem *mem) 43 { 44 nvif_object_dtor(&mem->object); 45 } 46 47 int 48 nvif_mem_ctor_type(struct nvif_mmu *mmu, const char *name, s32 oclass, 49 int type, u8 page, u64 size, void *argv, u32 argc, 50 struct nvif_mem *mem) 51 { 52 struct nvif_mem_v0 *args; 53 u8 stack[128]; 54 int ret; 55 56 mem->object.client = NULL; 57 if (type < 0) 58 return -EINVAL; 59 60 if (sizeof(*args) + argc > sizeof(stack)) { 61 if (!(args = kmalloc(sizeof(*args) + argc, GFP_KERNEL))) 62 return -ENOMEM; 63 } else { 64 args = (void *)stack; 65 } 66 args->version = 0; 67 args->type = type; 68 args->page = page; 69 args->size = size; 70 memcpy(args->data, argv, argc); 71 72 ret = nvif_object_ctor(&mmu->object, name ? name : "nvifMem", 0, oclass, 73 args, sizeof(*args) + argc, &mem->object); 74 if (ret == 0) { 75 mem->type = mmu->type[type].type; 76 mem->page = args->page; 77 mem->addr = args->addr; 78 mem->size = args->size; 79 } 80 81 if (args != (void *)stack) 82 kfree(args); 83 return ret; 84 85 } 86 87 int 88 nvif_mem_ctor(struct nvif_mmu *mmu, const char *name, s32 oclass, u8 type, 89 u8 page, u64 size, void *argv, u32 argc, struct nvif_mem *mem) 90 { 91 int ret = -EINVAL, i; 92 93 mem->object.client = NULL; 94 95 for (i = 0; ret && i < mmu->type_nr; i++) { 96 if ((mmu->type[i].type & type) == type) { 97 ret = nvif_mem_ctor_type(mmu, name, oclass, i, page, 98 size, argv, argc, mem); 99 } 100 } 101 102 return ret; 103 } 104