linux-kernel - Re: [PATCH v3 RESEND] PCI: Add func1 DMA quirk for Marvell 88SE9125 SATA controller

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Date:   Wed, 15 Dec 2021 14:36:31 -0600
From:   Bjorn Helgaas <helgaas@...nel.org>
To:     Yifeng Li <tomli@...li.me>
Cc:     Bjorn Helgaas <bhelgaas@...gle.com>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Sam Bingner <sam@...gner.com>, linux-pci@...r.kernel.org,
        trivial@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 RESEND] PCI: Add func1 DMA quirk for Marvell 88SE9125
 SATA controller

On Thu, Dec 02, 2021 at 06:35:21AM +0000, Yifeng Li wrote:
> Like other SATA controller chips in the Marvell 88SE91xx series, the
> Marvell 88SE9125 has the same DMA requester ID hardware bug that prevents
> it from working under IOMMU. This patch adds its device ID 0x9125 to the
> Function 1 DMA alias quirk list.
> 
> This patch should not be confused with an earlier patch, commit 059983790a4c
> ("PCI: Add function 1 DMA alias quirk for Marvell 9215 SATA controller"),
> which applies to a different chip with a similar model number, 88SE9215.
> 
> Without this patch, device initialization fails with DMA errors.
> 
>     ata8: softreset failed (1st FIS failed)
>     DMAR: DRHD: handling fault status reg 2
>     DMAR: [DMA Write NO_PASID] Request device [03:00.1] fault addr 0xfffc0000 [fault reason 0x02] Present bit in context entry is clear
>     DMAR: DRHD: handling fault status reg 2
>     DMAR: [DMA Read NO_PASID] Request device [03:00.1] fault addr 0xfffc0000 [fault reason 0x02] Present bit in context entry is clear
> 
> After applying the patch, the controller can be successfully initialized.
> 
>     ata8: SATA link up 1.5 Gbps (SStatus 113 SControl 330)
>     ata8.00: ATAPI: PIONEER BD-RW   BDR-207M, 1.21, max UDMA/100
>     ata8.00: configured for UDMA/100
>     scsi 7:0:0:0: CD-ROM            PIONEER  BD-RW   BDR-207M 1.21 PQ: 0 ANSI: 5
> 
> Cc: stable@...r.kernel.org
> Reported-by: Sam Bingner <sam@...gner.com>
> Tested-by: Sam Bingner <sam@...gner.com>
> Tested-by: Yifeng Li <tomli@...li.me>
> Signed-off-by: Yifeng Li <tomli@...li.me>
> Reviewed-by: Krzysztof Wilczyński <kw@...ux.com>

I tweaked the subject line to match similar previous commits and
applied to pci/virtualization for v5.17, thanks!

  e44537588288 ("PCI: Add function 1 DMA alias quirk for Marvell 88SE9125 SATA controller")
  059983790a4c ("PCI: Add function 1 DMA alias quirk for Marvell 9215 SATA controller")
  9cde402a5977 ("PCI: Add function 1 DMA alias quirk for Marvell 9170 SATA controller")
  7695e73f3db4 ("PCI: Add function 1 DMA alias quirk for Marvell 88SS9183")
  1903be8222b7 ("PCI: Add function 1 DMA alias quirk for Highpoint RocketRAID 644L")
  832e4e1f76b8 ("PCI: Add function 1 DMA alias quirk for Marvell 88SE9220")
  aa0082066343 ("PCI: Add function 1 DMA alias quirk for Marvell 9128")
  00456b35a527 ("PCI: Add function 1 DMA alias quirk for Marvell 88SE9182")

> ---
> 
> Notes:
>     v3: Use full names in Reported-by and Tested-by tags.
>     
>     v2: I accidentally sent an earlier version of the commit without
>     CCing stable@...r.kernel.org. The mail itself was also rejected by
>     many servers due to a DKIM issue. Thus [PATCH v2], sorry for the
>     noise.
> 
>  drivers/pci/quirks.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
> index 003950c73..20a932690 100644
> --- a/drivers/pci/quirks.c
> +++ b/drivers/pci/quirks.c
> @@ -4103,6 +4103,9 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9120,
>  			 quirk_dma_func1_alias);
>  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9123,
>  			 quirk_dma_func1_alias);
> +/* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c136 */
> +DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9125,
> +			 quirk_dma_func1_alias);
>  DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_MARVELL_EXT, 0x9128,
>  			 quirk_dma_func1_alias);
>  /* https://bugzilla.kernel.org/show_bug.cgi?id=42679#c14 */
> -- 
> 2.31.1