From: Alex Deucher <alexdeucher@gmail.com>
To: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Cc: "Maling list - DRI developers" <dri-devel@lists.freedesktop.org>,
"amd-gfx list" <amd-gfx@lists.freedesktop.org>,
"Linux PCI" <linux-pci@vger.kernel.org>,
"Christian König" <ckoenig.leichtzumerken@gmail.com>,
"Daniel Vetter" <daniel.vetter@ffwll.ch>,
"Wentland, Harry" <Harry.Wentland@amd.com>,
"Greg KH" <gregkh@linuxfoundation.org>,
"Kuehling, Felix" <Felix.Kuehling@amd.com>,
"Bjorn Helgaas" <helgaas@kernel.org>,
"Deucher, Alexander" <Alexander.Deucher@amd.com>
Subject: Re: [PATCH v7 16/16] drm/amdgpu: Unmap all MMIO mappings
Date: Mon, 17 May 2021 13:43:33 -0400 [thread overview]
Message-ID: <CADnq5_M-Sy3cF762044Ub9J=N_U6uQ2h2j40Y=fof04dXL5h7w@mail.gmail.com> (raw)
In-Reply-To: <20210512142648.666476-17-andrey.grodzovsky@amd.com>
On Wed, May 12, 2021 at 10:27 AM Andrey Grodzovsky
<andrey.grodzovsky@amd.com> wrote:
>
> Access to those must be prevented post pci_remove
>
> v6: Drop BOs list, unampping VRAM BAR is enough.
>
> Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
> ---
> drivers/gpu/drm/amd/amdgpu/amdgpu_device.c | 24 +++++++++++++++++++---
> drivers/gpu/drm/amd/amdgpu/amdgpu_object.c | 1 +
> drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 4 ----
> 3 files changed, 22 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> index f7cca25c0fa0..73cbc3c7453f 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
> @@ -3666,6 +3666,25 @@ int amdgpu_device_init(struct amdgpu_device *adev,
> return r;
> }
>
> +static void amdgpu_device_unmap_mmio(struct amdgpu_device *adev)
> +{
> + /* Clear all CPU mappings pointing to this device */
> + unmap_mapping_range(adev->ddev.anon_inode->i_mapping, 0, 0, 1);
> +
> + /* Unmap all mapped bars - Doorbell, registers and VRAM */
> + amdgpu_device_doorbell_fini(adev);
> +
> + iounmap(adev->rmmio);
> + adev->rmmio = NULL;
> + if (adev->mman.aper_base_kaddr)
> + iounmap(adev->mman.aper_base_kaddr);
> + adev->mman.aper_base_kaddr = NULL;
> +
> + /* Memory manager related */
I think we need:
if (!adev->gmc.xgmi.connected_to_cpu) {
around these two to mirror amdgpu_bo_fini().
Alex
> + arch_phys_wc_del(adev->gmc.vram_mtrr);
> + arch_io_free_memtype_wc(adev->gmc.aper_base, adev->gmc.aper_size);
> +}
> +
> /**
> * amdgpu_device_fini - tear down the driver
> *
> @@ -3712,6 +3731,8 @@ void amdgpu_device_fini_hw(struct amdgpu_device *adev)
> amdgpu_device_ip_fini_early(adev);
>
> amdgpu_gart_dummy_page_fini(adev);
> +
> + amdgpu_device_unmap_mmio(adev);
> }
>
> void amdgpu_device_fini_sw(struct amdgpu_device *adev)
> @@ -3739,9 +3760,6 @@ void amdgpu_device_fini_sw(struct amdgpu_device *adev)
> }
> if ((adev->pdev->class >> 8) == PCI_CLASS_DISPLAY_VGA)
> vga_client_register(adev->pdev, NULL, NULL, NULL);
> - iounmap(adev->rmmio);
> - adev->rmmio = NULL;
> - amdgpu_device_doorbell_fini(adev);
>
> if (IS_ENABLED(CONFIG_PERF_EVENTS))
> amdgpu_pmu_fini(adev);
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> index 0adffcace326..882fb49f3c41 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_object.c
> @@ -533,6 +533,7 @@ static int amdgpu_bo_do_create(struct amdgpu_device *adev,
> return -ENOMEM;
> drm_gem_private_object_init(adev_to_drm(adev), &bo->tbo.base, size);
> INIT_LIST_HEAD(&bo->shadow_list);
> +
> bo->vm_bo = NULL;
> bo->preferred_domains = bp->preferred_domain ? bp->preferred_domain :
> bp->domain;
> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> index 0d54e70278ca..58ad2fecc9e3 100644
> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
> @@ -1841,10 +1841,6 @@ void amdgpu_ttm_fini(struct amdgpu_device *adev)
> amdgpu_bo_free_kernel(&adev->mman.discovery_memory, NULL, NULL);
> amdgpu_ttm_fw_reserve_vram_fini(adev);
>
> - if (adev->mman.aper_base_kaddr)
> - iounmap(adev->mman.aper_base_kaddr);
> - adev->mman.aper_base_kaddr = NULL;
> -
> amdgpu_vram_mgr_fini(adev);
> amdgpu_gtt_mgr_fini(adev);
> ttm_range_man_fini(&adev->mman.bdev, AMDGPU_PL_GDS);
> --
> 2.25.1
>
next prev parent reply other threads:[~2021-05-17 17:43 UTC|newest]
Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-12 14:26 [PATCH v7 00/16] RFC Support hot device unplug in amdgpu Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 01/16] drm/ttm: Remap all page faults to per process dummy page Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 02/16] drm/amdgpu: Split amdgpu_device_fini into early and late Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 03/16] drm/amdkfd: Split kfd suspend from device exit Andrey Grodzovsky
2021-05-12 20:33 ` Felix Kuehling
2021-05-12 20:38 ` Andrey Grodzovsky
2021-05-20 3:20 ` [PATCH] drm/amdgpu: Add early fini callback Andrey Grodzovsky
2021-05-20 3:29 ` Felix Kuehling
2021-05-20 3:58 ` Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 04/16] " Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 05/16] drm/amdgpu: Handle IOMMU enabled case Andrey Grodzovsky
2021-05-14 14:41 ` Andrey Grodzovsky
2021-05-14 16:25 ` Felix Kuehling
2021-05-14 16:26 ` Andrey Grodzovsky
2021-05-17 14:38 ` [PATCH] " Andrey Grodzovsky
2021-05-17 14:48 ` Felix Kuehling
2021-05-12 14:26 ` [PATCH v7 06/16] drm/amdgpu: Remap all page faults to per process dummy page Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 07/16] PCI: Add support for dev_groups to struct pci_driver Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 08/16] drm/amdgpu: Convert driver sysfs attributes to static attributes Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 09/16] drm/amdgpu: Guard against write accesses after device removal Andrey Grodzovsky
2021-05-12 20:17 ` Alex Deucher
2021-05-12 20:30 ` Andrey Grodzovsky
2021-05-12 20:50 ` Alex Deucher
2021-05-13 14:47 ` Andrey Grodzovsky
2021-05-13 14:54 ` Alex Deucher
2021-05-12 14:26 ` [PATCH v7 10/16] drm/sched: Make timeout timer rearm conditional Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 11/16] drm/amdgpu: Prevent any job recoveries after device is unplugged Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 12/16] drm/amdgpu: Fix hang on device removal Andrey Grodzovsky
2021-05-14 14:42 ` Andrey Grodzovsky
2021-05-17 14:40 ` Andrey Grodzovsky
2021-05-17 17:39 ` Alex Deucher
2021-05-17 19:39 ` Christian König
2021-05-17 19:46 ` Andrey Grodzovsky
2021-05-17 19:54 ` Christian König
2021-05-12 14:26 ` [PATCH v7 13/16] drm/scheduler: Fix hang when sched_entity released Andrey Grodzovsky
2021-05-18 14:07 ` Christian König
2021-05-18 15:03 ` Andrey Grodzovsky
2021-05-18 15:15 ` Christian König
2021-05-18 16:17 ` Andrey Grodzovsky
2021-05-18 16:33 ` Christian König
2021-05-18 17:43 ` Andrey Grodzovsky
2021-05-18 18:02 ` Christian König
2021-05-18 18:09 ` Andrey Grodzovsky
2021-05-18 18:13 ` Christian König
2021-05-18 18:48 ` Andrey Grodzovsky
2021-05-18 20:56 ` Andrey Grodzovsky
2021-05-19 10:57 ` Christian König
2021-05-19 11:03 ` Andrey Grodzovsky
2021-05-19 11:46 ` Christian König
2021-05-19 11:51 ` Andrey Grodzovsky
2021-05-19 11:56 ` Christian König
2021-05-19 14:14 ` [PATCH] drm/sched: Avoid data corruptions Andrey Grodzovsky
2021-05-19 14:15 ` Christian König
2021-05-12 14:26 ` [PATCH v7 14/16] drm/amd/display: Remove superfluous drm_mode_config_cleanup Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 15/16] drm/amdgpu: Verify DMA opearations from device are done Andrey Grodzovsky
2021-05-12 14:26 ` [PATCH v7 16/16] drm/amdgpu: Unmap all MMIO mappings Andrey Grodzovsky
2021-05-14 14:42 ` Andrey Grodzovsky
2021-05-17 14:41 ` Andrey Grodzovsky
2021-05-17 17:43 ` Alex Deucher [this message]
2021-05-17 18:46 ` Andrey Grodzovsky
2021-05-17 18:56 ` Alex Deucher
2021-05-17 19:22 ` Andrey Grodzovsky
2021-05-17 19:31 ` [PATCH] " Andrey Grodzovsky
2021-05-18 14:01 ` Andrey Grodzovsky
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