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