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Diffstat (limited to 'arch/mips/pci/fixup-malta.c')
-rw-r--r--arch/mips/pci/fixup-malta.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/mips/pci/fixup-malta.c b/arch/mips/pci/fixup-malta.c
index df36e2327c5..7a0eda782e3 100644
--- a/arch/mips/pci/fixup-malta.c
+++ b/arch/mips/pci/fixup-malta.c
@@ -54,6 +54,7 @@ int pcibios_plat_dev_init(struct pci_dev *dev)
static void malta_piix_func0_fixup(struct pci_dev *pdev)
{
unsigned char reg_val;
+ u32 reg_val32;
/* PIIX PIRQC[A:D] irq mappings */
static int piixirqmap[PIIX4_FUNC0_PIRQRC_IRQ_ROUTING_MAX] = {
0, 0, 0, 3,
@@ -83,6 +84,16 @@ static void malta_piix_func0_fixup(struct pci_dev *pdev)
pci_write_config_byte(pdev, PIIX4_FUNC0_TOM, reg_val |
PIIX4_FUNC0_TOM_TOP_OF_MEMORY_MASK);
}
+
+ /* Mux SERIRQ to its pin */
+ pci_read_config_dword(pdev, PIIX4_FUNC0_GENCFG, &reg_val32);
+ pci_write_config_dword(pdev, PIIX4_FUNC0_GENCFG,
+ reg_val32 | PIIX4_FUNC0_GENCFG_SERIRQ);
+
+ /* Enable SERIRQ */
+ pci_read_config_byte(pdev, PIIX4_FUNC0_SERIRQC, &reg_val);
+ reg_val |= PIIX4_FUNC0_SERIRQC_EN | PIIX4_FUNC0_SERIRQC_CONT;
+ pci_write_config_byte(pdev, PIIX4_FUNC0_SERIRQC, reg_val);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82371AB_0,