From 648d93fc77da4f655cf13108417f33c91d745e2c Mon Sep 17 00:00:00 2001 From: Tomasz Nowicki Date: Wed, 30 Nov 2016 23:16:34 -0600 Subject: PCI: Add MCFG quirks for Cavium ThunderX pass1.x host controller ThunderX pass1.x requires to emulate the EA headers for on-chip devices hence it has to use custom pci_thunder_ecam_ops for accessing PCI config space (pci-thunder-ecam.c). Add new entries to MCFG quirk array where it can be applied while probing ACPI based PCI host controller. ThunderX pass1.x is using the same way for accessing off-chip devices (so-called PEM) as silicon pass-2.x so we need to add PEM quirk entries too. Quirk is considered for ThunderX silicon pass1.x only which is identified via MCFG revision 2. ThunderX pass 1.x requires the following accessors: NUMA node 0 PCI segments 0- 3: pci_thunder_ecam_ops (MCFG quirk) NUMA node 0 PCI segments 4- 9: thunder_pem_ecam_ops (MCFG quirk) NUMA node 1 PCI segments 10-13: pci_thunder_ecam_ops (MCFG quirk) NUMA node 1 PCI segments 14-19: thunder_pem_ecam_ops (MCFG quirk) [bhelgaas: change Makefile/ifdefs so quirk doesn't depend on CONFIG_PCI_HOST_THUNDER_ECAM] Signed-off-by: Tomasz Nowicki Signed-off-by: Bjorn Helgaas --- drivers/acpi/pci_mcfg.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c index 17cbb07ce16c..1cfe65d87adf 100644 --- a/drivers/acpi/pci_mcfg.c +++ b/drivers/acpi/pci_mcfg.c @@ -93,6 +93,21 @@ static struct mcfg_fixup mcfg_quirks[] = { /* SoC pass2.x */ THUNDER_PEM_QUIRK(1, 0), THUNDER_PEM_QUIRK(1, 1), + +#define THUNDER_ECAM_QUIRK(rev, seg) \ + { "CAVIUM", "THUNDERX", rev, seg, MCFG_BUS_ANY, \ + &pci_thunder_ecam_ops } + /* SoC pass1.x */ + THUNDER_PEM_QUIRK(2, 0), /* off-chip devices */ + THUNDER_PEM_QUIRK(2, 1), /* off-chip devices */ + THUNDER_ECAM_QUIRK(2, 0), + THUNDER_ECAM_QUIRK(2, 1), + THUNDER_ECAM_QUIRK(2, 2), + THUNDER_ECAM_QUIRK(2, 3), + THUNDER_ECAM_QUIRK(2, 10), + THUNDER_ECAM_QUIRK(2, 11), + THUNDER_ECAM_QUIRK(2, 12), + THUNDER_ECAM_QUIRK(2, 13), }; static char mcfg_oem_id[ACPI_OEM_ID_SIZE]; -- cgit v1.2.3