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| author |   Marek Behún <kabel@kernel.org> | 2021-06-24 19:14:18 +0200 |
|---|---|---|
| committer |   Bjorn Helgaas <bhelgaas@google.com> | 2021-07-26 12:16:35 -0500 |
| commit | b12d93e9958e028856cbcb061b6e64728ca07755 (patch) | |
| tree | 8a88003df9db4720320f8c05116734791c6eb1cd /drivers/pci/quirks.c | |
| parent | PCI: Call Max Payload Size-related fixup quirks early (diff) | |
| download | linux-dev-b12d93e9958e028856cbcb061b6e64728ca07755.tar.xz linux-dev-b12d93e9958e028856cbcb061b6e64728ca07755.zip | |
PCI: Restrict ASMedia ASM1062 SATA Max Payload Size Supported
The ASMedia ASM1062 SATA controller advertises Max_Payload_Size_Supported
of 512, but in fact it cannot handle incoming TLPs with payload size of
512.
We discovered this issue on PCIe controllers capable of MPS = 512 (Aardvark
and DesignWare), where the issue presents itself as an External Abort.
Bjorn Helgaas says:
Probably ASM1062 reports a Malformed TLP error when it receives a data
payload of 512 bytes, and Aardvark, DesignWare, etc convert this to an
arm64 External Abort. [1]
To avoid this problem, limit the ASM1062 Max Payload Size Supported to 256
bytes, so we set the Max Payload Size of devices that may send TLPs to the
ASM1062 to 256 or less.
[1] https://lore.kernel.org/linux-pci/20210601170907.GA1949035@bjorn-Precision-5520/
BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212695
Link: https://lore.kernel.org/r/20210624171418.27194-2-kabel@kernel.org
Reported-by: Rötti <espressobinboardarmbiantempmailaddress@posteo.de>
Signed-off-by: Marek Behún <kabel@kernel.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Krzysztof Wilczyński <kw@linux.com>
Reviewed-by: Pali Rohár <pali@kernel.org>
Cc: stable@vger.kernel.org
Diffstat (limited to 'drivers/pci/quirks.c')
| -rw-r--r-- | drivers/pci/quirks.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index c8a7f8d7123a..664233c2ef29 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -3240,6 +3240,7 @@ DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE, PCI_DEVICE_ID_SOLARFLARE_SFC4000A_1, fixup_mpss_256); DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SOLARFLARE, PCI_DEVICE_ID_SOLARFLARE_SFC4000B, fixup_mpss_256); +DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_ASMEDIA, 0x0612, fixup_mpss_256); /* * Intel 5000 and 5100 Memory controllers have an erratum with read completion |