142 lines · c
1/*2 * Copyright 2017 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 */22#include "nouveau_vmm.h"23#include "nouveau_drv.h"24#include "nouveau_bo.h"25#include "nouveau_svm.h"26#include "nouveau_mem.h"27 28void29nouveau_vma_unmap(struct nouveau_vma *vma)30{31 if (vma->mem) {32 nvif_vmm_unmap(&vma->vmm->vmm, vma->addr);33 vma->mem = NULL;34 }35}36 37int38nouveau_vma_map(struct nouveau_vma *vma, struct nouveau_mem *mem)39{40 struct nvif_vma tmp = { .addr = vma->addr };41 int ret = nouveau_mem_map(mem, &vma->vmm->vmm, &tmp);42 if (ret)43 return ret;44 vma->mem = mem;45 return 0;46}47 48struct nouveau_vma *49nouveau_vma_find(struct nouveau_bo *nvbo, struct nouveau_vmm *vmm)50{51 struct nouveau_vma *vma;52 53 list_for_each_entry(vma, &nvbo->vma_list, head) {54 if (vma->vmm == vmm)55 return vma;56 }57 58 return NULL;59}60 61void62nouveau_vma_del(struct nouveau_vma **pvma)63{64 struct nouveau_vma *vma = *pvma;65 if (vma && --vma->refs <= 0) {66 if (likely(vma->addr != ~0ULL)) {67 struct nvif_vma tmp = { .addr = vma->addr, .size = 1 };68 nvif_vmm_put(&vma->vmm->vmm, &tmp);69 }70 list_del(&vma->head);71 kfree(*pvma);72 }73 *pvma = NULL;74}75 76int77nouveau_vma_new(struct nouveau_bo *nvbo, struct nouveau_vmm *vmm,78 struct nouveau_vma **pvma)79{80 struct nouveau_mem *mem = nouveau_mem(nvbo->bo.resource);81 struct nouveau_vma *vma;82 struct nvif_vma tmp;83 int ret;84 85 if ((vma = *pvma = nouveau_vma_find(nvbo, vmm))) {86 vma->refs++;87 return 0;88 }89 90 if (!(vma = *pvma = kmalloc(sizeof(*vma), GFP_KERNEL)))91 return -ENOMEM;92 vma->vmm = vmm;93 vma->refs = 1;94 vma->addr = ~0ULL;95 vma->mem = NULL;96 vma->fence = NULL;97 list_add_tail(&vma->head, &nvbo->vma_list);98 99 if (nvbo->bo.resource->mem_type != TTM_PL_SYSTEM &&100 mem->mem.page == nvbo->page) {101 ret = nvif_vmm_get(&vmm->vmm, LAZY, false, mem->mem.page, 0,102 mem->mem.size, &tmp);103 if (ret)104 goto done;105 106 vma->addr = tmp.addr;107 ret = nouveau_vma_map(vma, mem);108 } else {109 ret = nvif_vmm_get(&vmm->vmm, PTES, false, mem->mem.page, 0,110 mem->mem.size, &tmp);111 if (ret)112 goto done;113 114 vma->addr = tmp.addr;115 }116 117done:118 if (ret)119 nouveau_vma_del(pvma);120 return ret;121}122 123void124nouveau_vmm_fini(struct nouveau_vmm *vmm)125{126 nouveau_svmm_fini(&vmm->svmm);127 nvif_vmm_dtor(&vmm->vmm);128 vmm->cli = NULL;129}130 131int132nouveau_vmm_init(struct nouveau_cli *cli, s32 oclass, struct nouveau_vmm *vmm)133{134 int ret = nvif_vmm_ctor(&cli->mmu, "drmVmm", oclass, UNMANAGED,135 PAGE_SIZE, 0, NULL, 0, &vmm->vmm);136 if (ret)137 return ret;138 139 vmm->cli = cli;140 return 0;141}142