From 1fed17a3f1736f5396a951dd01ebd58adf43208f Mon Sep 17 00:00:00 2001 From: Jiri Slaby Date: Mon, 28 Feb 2011 10:45:09 +0100 Subject: [PATCH] PCI: add more checking to ICH region quirks commit cdb9755849fbaf2bb9c0a009ba5baa817a0f152d upstream. Per ICH4 and ICH6 specs, ACPI and GPIO regions are valid iff ACPI_EN and GPIO_EN bits are set to 1. Add checks for these bits into the quirks prior to the region creation. While at it, name the constants by macros. Signed-off-by: Jiri Slaby Cc: Bjorn Helgaas Cc: "David S. Miller" Cc: Thomas Renninger Signed-off-by: Jesse Barnes Signed-off-by: Greg Kroah-Hartman --- drivers/pci/quirks.c | 45 +++++++++++++++++++++++++++++++++++++-------- 1 file changed, 37 insertions(+), 8 deletions(-) diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index e6cf972d768..157c2136199 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -523,6 +523,17 @@ static void __devinit quirk_piix4_acpi(struct pci_dev *dev) DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_3, quirk_piix4_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, quirk_piix4_acpi); +#define ICH_PMBASE 0x40 +#define ICH_ACPI_CNTL 0x44 +#define ICH4_ACPI_EN 0x10 +#define ICH6_ACPI_EN 0x80 +#define ICH4_GPIOBASE 0x58 +#define ICH4_GPIO_CNTL 0x5c +#define ICH4_GPIO_EN 0x10 +#define ICH6_GPIOBASE 0x48 +#define ICH6_GPIO_CNTL 0x4c +#define ICH6_GPIO_EN 0x10 + /* * ICH4, ICH4-M, ICH5, ICH5-M ACPI: Three IO regions pointed to by longwords at * 0x40 (128 bytes of ACPI, GPIO & TCO registers) @@ -531,12 +542,21 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82443MX_3, qui static void __devinit quirk_ich4_lpc_acpi(struct pci_dev *dev) { u32 region; + u8 enable; - pci_read_config_dword(dev, 0x40, ®ion); - quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH4 ACPI/GPIO/TCO"); + pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); + if (enable & ICH4_ACPI_EN) { + pci_read_config_dword(dev, ICH_PMBASE, ®ion); + quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, + "ICH4 ACPI/GPIO/TCO"); + } - pci_read_config_dword(dev, 0x58, ®ion); - quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH4 GPIO"); + pci_read_config_byte(dev, ICH4_GPIO_CNTL, &enable); + if (enable & ICH4_GPIO_EN) { + pci_read_config_dword(dev, ICH4_GPIOBASE, ®ion); + quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES + 1, + "ICH4 GPIO"); + } } DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AA_0, quirk_ich4_lpc_acpi); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82801AB_0, quirk_ich4_lpc_acpi); @@ -552,12 +572,21 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_ESB_1, qui static void __devinit ich6_lpc_acpi_gpio(struct pci_dev *dev) { u32 region; + u8 enable; - pci_read_config_dword(dev, 0x40, ®ion); - quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, "ICH6 ACPI/GPIO/TCO"); + pci_read_config_byte(dev, ICH_ACPI_CNTL, &enable); + if (enable & ICH6_ACPI_EN) { + pci_read_config_dword(dev, ICH_PMBASE, ®ion); + quirk_io_region(dev, region, 128, PCI_BRIDGE_RESOURCES, + "ICH6 ACPI/GPIO/TCO"); + } - pci_read_config_dword(dev, 0x48, ®ion); - quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES+1, "ICH6 GPIO"); + pci_read_config_byte(dev, ICH6_GPIO_CNTL, &enable); + if (enable & ICH4_GPIO_EN) { + pci_read_config_dword(dev, ICH6_GPIOBASE, ®ion); + quirk_io_region(dev, region, 64, PCI_BRIDGE_RESOURCES + 1, + "ICH6 GPIO"); + } } static void __devinit ich6_lpc_generic_decode(struct pci_dev *dev, unsigned reg, const char *name, int dynsize) -- 2.11.4.GIT