linux-kernel - [PATCH 5.4 005/152] PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken

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Message-Id: <20200820091553.905542775@linuxfoundation.org>
Date:   Thu, 20 Aug 2020 11:19:32 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Kai-Heng Feng <kai.heng.feng@...onical.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Alex Deucher <alexander.deucher@....com>
Subject: [PATCH 5.4 005/152] PCI: Mark AMD Navi10 GPU rev 0x00 ATS as broken

From: Kai-Heng Feng <kai.heng.feng@...onical.com>

commit 45beb31d3afb651bb5c41897e46bd4fa9980c51c upstream.

We are seeing AMD Radeon Pro W5700 doesn't work when IOMMU is enabled:

  iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=63:00.0 address=0x42b5b01a0]
  iommu ivhd0: AMD-Vi: Event logged [IOTLB_INV_TIMEOUT device=63:00.0 address=0x42b5b01c0]

The error also makes graphics driver fail to probe the device.

It appears to be the same issue as commit 5e89cd303e3a ("PCI: Mark AMD
Navi14 GPU rev 0xc5 ATS as broken") addresses, and indeed the same ATS
quirk can workaround the issue.

See-also: 5e89cd303e3a ("PCI: Mark AMD Navi14 GPU rev 0xc5 ATS as broken")
See-also: d28ca864c493 ("PCI: Mark AMD Stoney Radeon R7 GPU ATS as broken")
See-also: 9b44b0b09dec ("PCI: Mark AMD Stoney GPU ATS as broken")
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=208725
Link: https://lore.kernel.org/r/20200728104554.28927-1-kai.heng.feng@canonical.com
Signed-off-by: Kai-Heng Feng <kai.heng.feng@...onical.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@...gle.com>
Acked-by: Alex Deucher <alexander.deucher@....com>
Cc: stable@...r.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/pci/quirks.c |    5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -5208,7 +5208,8 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SE
  */
 static void quirk_amd_harvest_no_ats(struct pci_dev *pdev)
 {
-	if (pdev->device == 0x7340 && pdev->revision != 0xc5)
+	if ((pdev->device == 0x7312 && pdev->revision != 0x00) ||
+	    (pdev->device == 0x7340 && pdev->revision != 0xc5))
 		return;
 
 	pci_info(pdev, "disabling ATS\n");
@@ -5219,6 +5220,8 @@ static void quirk_amd_harvest_no_ats(str
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x98e4, quirk_amd_harvest_no_ats);
 /* AMD Iceland dGPU */
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x6900, quirk_amd_harvest_no_ats);
+/* AMD Navi10 dGPU */
+DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7312, quirk_amd_harvest_no_ats);
 /* AMD Navi14 dGPU */
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_ATI, 0x7340, quirk_amd_harvest_no_ats);
 #endif /* CONFIG_PCI_ATS */