2 * Copyright 2017 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
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"
29 nouveau_vma_unmap(struct nouveau_vma *vma)
32 nvif_vmm_unmap(&vma->vmm->vmm, vma->addr);
38 nouveau_vma_map(struct nouveau_vma *vma, struct nouveau_mem *mem)
40 struct nvif_vma tmp = { .addr = vma->addr };
41 int ret = nouveau_mem_map(mem, &vma->vmm->vmm, &tmp);
49 nouveau_vma_find(struct nouveau_bo *nvbo, struct nouveau_vmm *vmm)
51 struct nouveau_vma *vma;
53 list_for_each_entry(vma, &nvbo->vma_list, head) {
62 nouveau_vma_del(struct nouveau_vma **pvma)
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);
77 nouveau_vma_new(struct nouveau_bo *nvbo, struct nouveau_vmm *vmm,
78 struct nouveau_vma **pvma)
80 struct nouveau_mem *mem = nouveau_mem(nvbo->bo.resource);
81 struct nouveau_vma *vma;
85 if ((vma = *pvma = nouveau_vma_find(nvbo, vmm))) {
90 if (!(vma = *pvma = kmalloc(sizeof(*vma), GFP_KERNEL)))
97 list_add_tail(&vma->head, &nvbo->vma_list);
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);
106 vma->addr = tmp.addr;
107 ret = nouveau_vma_map(vma, mem);
109 ret = nvif_vmm_get(&vmm->vmm, PTES, false, mem->mem.page, 0,
110 mem->mem.size, &tmp);
114 vma->addr = tmp.addr;
119 nouveau_vma_del(pvma);
124 nouveau_vmm_fini(struct nouveau_vmm *vmm)
126 nouveau_svmm_fini(&vmm->svmm);
127 nvif_vmm_dtor(&vmm->vmm);
132 nouveau_vmm_init(struct nouveau_cli *cli, s32 oclass, struct nouveau_vmm *vmm)
134 int ret = nvif_vmm_ctor(&cli->mmu, "drmVmm", oclass, UNMANAGED,
135 PAGE_SIZE, 0, NULL, 0, &vmm->vmm);