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([2a02:810d:4b3f:de9c:642:1aff:fe31:a19f]) by smtp.gmail.com with ESMTPSA id q22-20020a50c356000000b0053dec545c8fsm1651202edb.3.2023.11.01.16.31.47 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 Nov 2023 16:31:48 -0700 (PDT) From: Danilo Krummrich To: airlied@gmail.com, daniel@ffwll.ch, matthew.brost@intel.com, thomas.hellstrom@linux.intel.com, sarah.walker@imgtec.com, donald.robson@imgtec.com, boris.brezillon@collabora.com, christian.koenig@amd.com, faith@gfxstrand.net Subject: [PATCH drm-misc-next v8 08/12] drm/nouveau: separately allocate struct nouveau_uvmm Date: Thu, 2 Nov 2023 00:31:00 +0100 Message-ID: <20231101233113.8059-9-dakr@redhat.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20231101233113.8059-1-dakr@redhat.com> References: <20231101233113.8059-1-dakr@redhat.com> MIME-Version: 1.0 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nouveau@lists.freedesktop.org, Danilo Krummrich , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Allocate struct nouveau_uvmm separately in preparation for subsequent commits introducing reference counting for struct drm_gpuvm. While at it, get rid of nouveau_uvmm_init() as indirection of nouveau_uvmm_ioctl_vm_init() and perform some minor cleanups. Signed-off-by: Danilo Krummrich Reviewed-by: Dave Airlie --- drivers/gpu/drm/nouveau/nouveau_drm.c | 5 +- drivers/gpu/drm/nouveau/nouveau_drv.h | 10 ++-- drivers/gpu/drm/nouveau/nouveau_uvmm.c | 63 +++++++++++++------------- drivers/gpu/drm/nouveau/nouveau_uvmm.h | 4 -- 4 files changed, 40 insertions(+), 42 deletions(-) diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c index 50589f982d1a..f603eaef1560 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drm.c +++ b/drivers/gpu/drm/nouveau/nouveau_drm.c @@ -190,6 +190,8 @@ nouveau_cli_work_queue(struct nouveau_cli *cli, struct dma_fence *fence, static void nouveau_cli_fini(struct nouveau_cli *cli) { + struct nouveau_uvmm *uvmm = nouveau_cli_uvmm_locked(cli); + /* All our channels are dead now, which means all the fences they * own are signalled, and all callback functions have been called. * @@ -199,7 +201,8 @@ nouveau_cli_fini(struct nouveau_cli *cli) WARN_ON(!list_empty(&cli->worker)); usif_client_fini(cli); - nouveau_uvmm_fini(&cli->uvmm); + if (uvmm) + nouveau_uvmm_fini(uvmm); nouveau_sched_entity_fini(&cli->sched_entity); nouveau_vmm_fini(&cli->svm); nouveau_vmm_fini(&cli->vmm); diff --git a/drivers/gpu/drm/nouveau/nouveau_drv.h b/drivers/gpu/drm/nouveau/nouveau_drv.h index 3666a7403e47..e514110bf391 100644 --- a/drivers/gpu/drm/nouveau/nouveau_drv.h +++ b/drivers/gpu/drm/nouveau/nouveau_drv.h @@ -93,7 +93,10 @@ struct nouveau_cli { struct nvif_mmu mmu; struct nouveau_vmm vmm; struct nouveau_vmm svm; - struct nouveau_uvmm uvmm; + struct { + struct nouveau_uvmm *ptr; + bool disabled; + } uvmm; struct nouveau_sched_entity sched_entity; @@ -121,10 +124,7 @@ struct nouveau_cli_work { static inline struct nouveau_uvmm * nouveau_cli_uvmm(struct nouveau_cli *cli) { - if (!cli || !cli->uvmm.vmm.cli) - return NULL; - - return &cli->uvmm; + return cli ? cli->uvmm.ptr : NULL; } static inline struct nouveau_uvmm * diff --git a/drivers/gpu/drm/nouveau/nouveau_uvmm.c b/drivers/gpu/drm/nouveau/nouveau_uvmm.c index f765e3835306..54be12c1272f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_uvmm.c +++ b/drivers/gpu/drm/nouveau/nouveau_uvmm.c @@ -1636,18 +1636,6 @@ nouveau_uvmm_bind_job_init(struct nouveau_uvmm_bind_job **pjob, return ret; } -int -nouveau_uvmm_ioctl_vm_init(struct drm_device *dev, - void *data, - struct drm_file *file_priv) -{ - struct nouveau_cli *cli = nouveau_cli(file_priv); - struct drm_nouveau_vm_init *init = data; - - return nouveau_uvmm_init(&cli->uvmm, cli, init->kernel_managed_addr, - init->kernel_managed_size); -} - static int nouveau_uvmm_vm_bind(struct nouveau_uvmm_bind_job_args *args) { @@ -1793,17 +1781,25 @@ nouveau_uvmm_bo_unmap_all(struct nouveau_bo *nvbo) } int -nouveau_uvmm_init(struct nouveau_uvmm *uvmm, struct nouveau_cli *cli, - u64 kernel_managed_addr, u64 kernel_managed_size) +nouveau_uvmm_ioctl_vm_init(struct drm_device *dev, + void *data, + struct drm_file *file_priv) { + struct nouveau_uvmm *uvmm; + struct nouveau_cli *cli = nouveau_cli(file_priv); struct drm_device *drm = cli->drm->dev; struct drm_gem_object *r_obj; - u64 kernel_managed_end = kernel_managed_addr + kernel_managed_size; + struct drm_nouveau_vm_init *init = data; + u64 kernel_managed_end; int ret; - mutex_init(&uvmm->mutex); - mt_init_flags(&uvmm->region_mt, MT_FLAGS_LOCK_EXTERN); - mt_set_external_lock(&uvmm->region_mt, &uvmm->mutex); + if (check_add_overflow(init->kernel_managed_addr, + init->kernel_managed_size, + &kernel_managed_end)) + return -EINVAL; + + if (kernel_managed_end > NOUVEAU_VA_SPACE_END) + return -EINVAL; mutex_lock(&cli->mutex); @@ -1812,44 +1808,49 @@ nouveau_uvmm_init(struct nouveau_uvmm *uvmm, struct nouveau_cli *cli, goto out_unlock; } - if (kernel_managed_end <= kernel_managed_addr) { - ret = -EINVAL; - goto out_unlock; - } - - if (kernel_managed_end > NOUVEAU_VA_SPACE_END) { - ret = -EINVAL; + uvmm = kzalloc(sizeof(*uvmm), GFP_KERNEL); + if (!uvmm) { + ret = -ENOMEM; goto out_unlock; } r_obj = drm_gpuvm_resv_object_alloc(drm); if (!r_obj) { + kfree(uvmm); ret = -ENOMEM; goto out_unlock; } + mutex_init(&uvmm->mutex); + mt_init_flags(&uvmm->region_mt, MT_FLAGS_LOCK_EXTERN); + mt_set_external_lock(&uvmm->region_mt, &uvmm->mutex); + drm_gpuvm_init(&uvmm->base, cli->name, 0, drm, r_obj, NOUVEAU_VA_SPACE_START, NOUVEAU_VA_SPACE_END, - kernel_managed_addr, kernel_managed_size, + init->kernel_managed_addr, + init->kernel_managed_size, NULL); /* GPUVM takes care from here on. */ drm_gem_object_put(r_obj); ret = nvif_vmm_ctor(&cli->mmu, "uvmm", cli->vmm.vmm.object.oclass, RAW, - kernel_managed_addr, kernel_managed_size, - NULL, 0, &cli->uvmm.vmm.vmm); + init->kernel_managed_addr, + init->kernel_managed_size, + NULL, 0, &uvmm->vmm.vmm); if (ret) goto out_gpuvm_fini; - cli->uvmm.vmm.cli = cli; + uvmm->vmm.cli = cli; + cli->uvmm.ptr = uvmm; mutex_unlock(&cli->mutex); return 0; out_gpuvm_fini: drm_gpuvm_destroy(&uvmm->base); + kfree(uvmm); out_unlock: mutex_unlock(&cli->mutex); return ret; @@ -1864,9 +1865,6 @@ nouveau_uvmm_fini(struct nouveau_uvmm *uvmm) struct nouveau_sched_entity *entity = &cli->sched_entity; struct drm_gpuva *va, *next; - if (!cli) - return; - rmb(); /* for list_empty to work without lock */ wait_event(entity->job.wq, list_empty(&entity->job.list.head)); @@ -1905,5 +1903,6 @@ nouveau_uvmm_fini(struct nouveau_uvmm *uvmm) mutex_lock(&cli->mutex); nouveau_vmm_fini(&uvmm->vmm); drm_gpuvm_destroy(&uvmm->base); + kfree(uvmm); mutex_unlock(&cli->mutex); } diff --git a/drivers/gpu/drm/nouveau/nouveau_uvmm.h b/drivers/gpu/drm/nouveau/nouveau_uvmm.h index 22607270fae0..f0a6d98ace4f 100644 --- a/drivers/gpu/drm/nouveau/nouveau_uvmm.h +++ b/drivers/gpu/drm/nouveau/nouveau_uvmm.h @@ -12,8 +12,6 @@ struct nouveau_uvmm { struct nouveau_vmm vmm; struct maple_tree region_mt; struct mutex mutex; - - bool disabled; }; struct nouveau_uvma_region { @@ -78,8 +76,6 @@ struct nouveau_uvmm_bind_job_args { #define to_uvmm_bind_job(job) container_of((job), struct nouveau_uvmm_bind_job, base) -int nouveau_uvmm_init(struct nouveau_uvmm *uvmm, struct nouveau_cli *cli, - u64 kernel_managed_addr, u64 kernel_managed_size); void nouveau_uvmm_fini(struct nouveau_uvmm *uvmm); void nouveau_uvmm_bo_map_all(struct nouveau_bo *nvbov, struct nouveau_mem *mem);