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

Signed-off-by: Olaf Dabrunz <od@suse.de>
Signed-off-by: Stefan 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: Ingo Molnar <mingo@elte.hu>

1 files changed, 32 insertions, 0 deletions

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index 9871a3cca4d..d1f0281279c 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -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 */
 
 /*