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PCI: Add ACS quirk for Intel 7th & 8th Gen mobile 

The specification update indicates these have the same errata for
implementing non-standard ACS capabilities.

Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org
This commit is contained in:
Alex Williamson 2018-04-25 14:27:37 -06:00 committed by Bjorn Helgaas
parent 74d986abc2
commit e8440f4bfe
1 changed files with 14 additions and 0 deletions
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14
drivers/pci/quirks.c
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@ -4230,11 +4230,24 @@ static int pci_quirk_qcom_rp_acs(struct pci_dev *dev, u16 acs_flags)
* 0xa290-0xa29f PCI Express Root port #{0-16}
* 0xa2e7-0xa2ee PCI Express Root port #{17-24}
*
* Mobile chipsets are also affected, 7th & 8th Generation
* Specification update confirms ACS errata 22, status no fix: (7th Generation
* Intel Processor Family I/O for U/Y Platforms and 8th Generation Intel
* Processor Family I/O for U Quad Core Platforms Specification Update,
* August 2017, Revision 002, Document#: 334660-002)[6]
* Device IDs from I/O datasheet: (7th Generation Intel Processor Family I/O
* for U/Y Platforms and 8th Generation Intel ® Processor Family I/O for U
* Quad Core Platforms, Vol 1 of 2, August 2017, Document#: 334658-003)[7]
*
* 0x9d10-0x9d1b PCI Express Root port #{1-12}
*
* [1] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-2.html
* [2] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-datasheet-vol-1.html
* [3] http://www.intel.com/content/www/us/en/chipsets/100-series-chipset-spec-update.html
* [4] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-spec-update.html
* [5] http://www.intel.com/content/www/us/en/chipsets/200-series-chipset-pch-datasheet-vol-1.html
* [6] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-spec-update.html
* [7] https://www.intel.com/content/www/us/en/processors/core/7th-gen-core-family-mobile-u-y-processor-lines-i-o-datasheet-vol-1.html
*/
static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
{
@ -4244,6 +4257,7 @@ static bool pci_quirk_intel_spt_pch_acs_match(struct pci_dev *dev)
switch (dev->device) {
case 0xa110 ... 0xa11f: case 0xa167 ... 0xa16a: /* Sunrise Point */
case 0xa290 ... 0xa29f: case 0xa2e7 ... 0xa2ee: /* Union Point */
case 0x9d10 ... 0x9d1b: /* 7th & 8th Gen Mobile */
return true;
}