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Commit e8440f4b authored by Alex Williamson's avatar Alex Williamson Committed by Bjorn Helgaas
Browse files

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: default avatarAlex Williamson <alex.williamson@redhat.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
CC: stable@vger.kernel.org
parent 74d986ab

drivers/pci/quirks.c

+14 −0
Original line number Diff line number Diff line
@@ -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;

	}