From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- drivers/gpu/drm/nouveau/nouveau_vmm.c | 141 ++++++++++++++++++++++++++++++++++ 1 file changed, 141 insertions(+) create mode 100644 drivers/gpu/drm/nouveau/nouveau_vmm.c (limited to 'drivers/gpu/drm/nouveau/nouveau_vmm.c') diff --git a/drivers/gpu/drm/nouveau/nouveau_vmm.c b/drivers/gpu/drm/nouveau/nouveau_vmm.c new file mode 100644 index 000000000..29b5dedf6 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_vmm.c @@ -0,0 +1,141 @@ +/* + * Copyright 2017 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ +#include "nouveau_vmm.h" +#include "nouveau_drv.h" +#include "nouveau_bo.h" +#include "nouveau_svm.h" +#include "nouveau_mem.h" + +void +nouveau_vma_unmap(struct nouveau_vma *vma) +{ + if (vma->mem) { + nvif_vmm_unmap(&vma->vmm->vmm, vma->addr); + vma->mem = NULL; + } +} + +int +nouveau_vma_map(struct nouveau_vma *vma, struct nouveau_mem *mem) +{ + struct nvif_vma tmp = { .addr = vma->addr }; + int ret = nouveau_mem_map(mem, &vma->vmm->vmm, &tmp); + if (ret) + return ret; + vma->mem = mem; + return 0; +} + +struct nouveau_vma * +nouveau_vma_find(struct nouveau_bo *nvbo, struct nouveau_vmm *vmm) +{ + struct nouveau_vma *vma; + + list_for_each_entry(vma, &nvbo->vma_list, head) { + if (vma->vmm == vmm) + return vma; + } + + return NULL; +} + +void +nouveau_vma_del(struct nouveau_vma **pvma) +{ + struct nouveau_vma *vma = *pvma; + if (vma && --vma->refs <= 0) { + if (likely(vma->addr != ~0ULL)) { + struct nvif_vma tmp = { .addr = vma->addr, .size = 1 }; + nvif_vmm_put(&vma->vmm->vmm, &tmp); + } + list_del(&vma->head); + kfree(*pvma); + } + *pvma = NULL; +} + +int +nouveau_vma_new(struct nouveau_bo *nvbo, struct nouveau_vmm *vmm, + struct nouveau_vma **pvma) +{ + struct nouveau_mem *mem = nouveau_mem(nvbo->bo.resource); + struct nouveau_vma *vma; + struct nvif_vma tmp; + int ret; + + if ((vma = *pvma = nouveau_vma_find(nvbo, vmm))) { + vma->refs++; + return 0; + } + + if (!(vma = *pvma = kmalloc(sizeof(*vma), GFP_KERNEL))) + return -ENOMEM; + vma->vmm = vmm; + vma->refs = 1; + vma->addr = ~0ULL; + vma->mem = NULL; + vma->fence = NULL; + list_add_tail(&vma->head, &nvbo->vma_list); + + if (nvbo->bo.resource->mem_type != TTM_PL_SYSTEM && + mem->mem.page == nvbo->page) { + ret = nvif_vmm_get(&vmm->vmm, LAZY, false, mem->mem.page, 0, + mem->mem.size, &tmp); + if (ret) + goto done; + + vma->addr = tmp.addr; + ret = nouveau_vma_map(vma, mem); + } else { + ret = nvif_vmm_get(&vmm->vmm, PTES, false, mem->mem.page, 0, + mem->mem.size, &tmp); + if (ret) + goto done; + + vma->addr = tmp.addr; + } + +done: + if (ret) + nouveau_vma_del(pvma); + return ret; +} + +void +nouveau_vmm_fini(struct nouveau_vmm *vmm) +{ + nouveau_svmm_fini(&vmm->svmm); + nvif_vmm_dtor(&vmm->vmm); + vmm->cli = NULL; +} + +int +nouveau_vmm_init(struct nouveau_cli *cli, s32 oclass, struct nouveau_vmm *vmm) +{ + int ret = nvif_vmm_ctor(&cli->mmu, "drmVmm", oclass, false, PAGE_SIZE, + 0, NULL, 0, &vmm->vmm); + if (ret) + return ret; + + vmm->cli = cli; + return 0; +} -- cgit v1.2.3