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Commit 77251188 authored by Olaf Dabrunz's avatar Olaf Dabrunz Committed by Ingo Molnar
Browse files

PCI quirks: add quirk to disable boot interrupt generation on broadcom HT1000 



Signed-off-by: default avatarOlaf Dabrunz <od@suse.de>
Signed-off-by: default avatarStefan Assmann <sassmann@suse.de>
Cc: Jon Masters <jonathan@jonmasters.org>
Cc: Olaf Dabrunz <od@suse.de>
Cc: Stefan Assmann <sassmann@suse.de>
Cc: Ihno Krumreich <ihno@suse.de>
Cc: Sven Dietrich <sdietrich@suse.de>
Cc: Daniel Gollub <dgollub@suse.de>
Cc: Felix Foerster <ffoerster@suse.de>
Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent dbbcfb22

drivers/pci/quirks.c

+32 −0
Original line number Diff line number Diff line
@@ -1417,6 +1417,38 @@ static void quirk_disable_intel_boot_interrupt(struct pci_dev *dev) 
		dev->vendor, dev->device);

}

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_INTEL,   PCI_DEVICE_ID_INTEL_ESB_10, 	quirk_disable_intel_boot_interrupt);



/*

 * disable boot interrupts on HT-1000

 */

#define BC_HT1000_FEATURE_REG		0x64

#define BC_HT1000_PIC_REGS_ENABLE	(1<<0)

#define BC_HT1000_MAP_IDX		0xC00

#define BC_HT1000_MAP_DATA		0xC01



static void quirk_disable_broadcom_boot_interrupt(struct pci_dev *dev)

{

	u32 pci_config_dword;

	u8 irq;



	if (noioapicquirk)

		return;



	pci_read_config_dword(dev, BC_HT1000_FEATURE_REG, &pci_config_dword);

	pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword |

			BC_HT1000_PIC_REGS_ENABLE);



	for (irq = 0x10; irq < 0x10 + 32; irq++) {

		outb(irq, BC_HT1000_MAP_IDX);

		outb(0x00, BC_HT1000_MAP_DATA);

	}



	pci_write_config_dword(dev, BC_HT1000_FEATURE_REG, pci_config_dword);



	printk(KERN_INFO "disabled boot interrupts on PCI device"

			"0x%04x:0x%04x\n", dev->vendor, dev->device);

}

DECLARE_PCI_FIXUP_EARLY(PCI_VENDOR_ID_SERVERWORKS,   PCI_DEVICE_ID_SERVERWORKS_HT1000SB, 	quirk_disable_broadcom_boot_interrupt);

#endif /* CONFIG_X86_IO_APIC */



/*