From c5d4603961009c39de94725213d8b5420f110f9e Mon Sep 17 00:00:00 2001 From: Duc Dang Date: Thu, 1 Dec 2016 18:27:07 -0800 Subject: PCI: Add MCFG quirks for X-Gene host controller PCIe controllers in X-Gene SoCs are not ECAM compliant: software needs to configure additional controller's register to address device at bus:dev:function. Add a quirk to discover controller MMIO register space and configure controller registers to select and address the target secondary device. The quirk will only be applied for X-Gene PCIe MCFG table with OEM revison 1, 2, 3 or 4 (PCIe controller v1 and v2 on X-Gene SoCs). Tested-by: Jon Masters Signed-off-by: Duc Dang Signed-off-by: Bjorn Helgaas --- drivers/acpi/pci_mcfg.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) (limited to 'drivers/acpi') diff --git a/drivers/acpi/pci_mcfg.c b/drivers/acpi/pci_mcfg.c index 1cfe65d87adf..a6a4ceaa6cc3 100644 --- a/drivers/acpi/pci_mcfg.c +++ b/drivers/acpi/pci_mcfg.c @@ -108,6 +108,31 @@ static struct mcfg_fixup mcfg_quirks[] = { THUNDER_ECAM_QUIRK(2, 11), THUNDER_ECAM_QUIRK(2, 12), THUNDER_ECAM_QUIRK(2, 13), + +#define XGENE_V1_ECAM_MCFG(rev, seg) \ + {"APM ", "XGENE ", rev, seg, MCFG_BUS_ANY, \ + &xgene_v1_pcie_ecam_ops } +#define XGENE_V2_ECAM_MCFG(rev, seg) \ + {"APM ", "XGENE ", rev, seg, MCFG_BUS_ANY, \ + &xgene_v2_pcie_ecam_ops } + /* X-Gene SoC with v1 PCIe controller */ + XGENE_V1_ECAM_MCFG(1, 0), + XGENE_V1_ECAM_MCFG(1, 1), + XGENE_V1_ECAM_MCFG(1, 2), + XGENE_V1_ECAM_MCFG(1, 3), + XGENE_V1_ECAM_MCFG(1, 4), + XGENE_V1_ECAM_MCFG(2, 0), + XGENE_V1_ECAM_MCFG(2, 1), + XGENE_V1_ECAM_MCFG(2, 2), + XGENE_V1_ECAM_MCFG(2, 3), + XGENE_V1_ECAM_MCFG(2, 4), + /* X-Gene SoC with v2.1 PCIe controller */ + XGENE_V2_ECAM_MCFG(3, 0), + XGENE_V2_ECAM_MCFG(3, 1), + /* X-Gene SoC with v2.2 PCIe controller */ + XGENE_V2_ECAM_MCFG(4, 0), + XGENE_V2_ECAM_MCFG(4, 1), + XGENE_V2_ECAM_MCFG(4, 2), }; static char mcfg_oem_id[ACPI_OEM_ID_SIZE]; -- cgit v1.2.3