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Commit 9859de9f authored by George Cherian's avatar George Cherian Committed by Greg Kroah-Hartman
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PCI: Add ACS quirks for Cavium multi-function devices 

[ Upstream commit 32837d8a8f63eb95dcb9cd005524a27f06478832 ]

Some Cavium endpoints are implemented as multi-function devices without ACS
capability, but they actually don't support peer-to-peer transactions.

Add ACS quirks to declare DMA isolation for the following devices:

  - BGX device found on Octeon-TX (8xxx)
  - CGX device found on Octeon-TX2 (9xxx)
  - RPM device found on Octeon-TX3 (10xxx)

Link: https://lore.kernel.org/r/20210810122425.1115156-1-george.cherian@marvell.com


Signed-off-by: default avatarGeorge Cherian <george.cherian@marvell.com>
Signed-off-by: default avatarBjorn Helgaas <bhelgaas@google.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent d3dc4907

drivers/pci/quirks.c

+4 −0
Original line number Diff line number Diff line
@@ -4778,6 +4778,10 @@ static const struct pci_dev_acs_enabled { 
	{ 0x10df, 0x720, pci_quirk_mf_endpoint_acs }, /* Emulex Skyhawk-R */

	/* Cavium ThunderX */

	{ PCI_VENDOR_ID_CAVIUM, PCI_ANY_ID, pci_quirk_cavium_acs },

	/* Cavium multi-function devices */

	{ PCI_VENDOR_ID_CAVIUM, 0xA026, pci_quirk_mf_endpoint_acs },

	{ PCI_VENDOR_ID_CAVIUM, 0xA059, pci_quirk_mf_endpoint_acs },

	{ PCI_VENDOR_ID_CAVIUM, 0xA060, pci_quirk_mf_endpoint_acs },

	/* APM X-Gene */

	{ PCI_VENDOR_ID_AMCC, 0xE004, pci_quirk_xgene_acs },

	/* Ampere Computing */