Linus,
Please apply this patch to 2.6.12-rc5.
It fixes a 2.6.11 regression in the VIA IRQ quirk
on machines with mixed vendor chip-sets.
thanks,
Len
Delete quirk_via_bridge(), restore quirk_via_irqpic() --
but now improved to be invoked upon device ENABLE, and
now only for VIA devices -- not all devices behind VIA bridges.
Signed-off-by: Bjorn Helgaas <[email protected]>
Signed-off-by: Len Brown <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
diff -uprN -X dontdiff linux-2.6.12-rc5.orig/arch/i386/pci/irq.c linux-2.6.12-rc5/arch/i386/pci/irq.c
--- linux-2.6.12-rc5.orig/arch/i386/pci/irq.c 2005-05-27 01:42:45.000000000 -0400
+++ linux-2.6.12-rc5/arch/i386/pci/irq.c 2005-05-27 02:31:41.000000000 -0400
@@ -1029,7 +1029,6 @@ void pcibios_penalize_isa_irq(int irq)
static int pirq_enable_irq(struct pci_dev *dev)
{
u8 pin;
- extern int via_interrupt_line_quirk;
struct pci_dev *temp_dev;
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
@@ -1084,10 +1083,6 @@ static int pirq_enable_irq(struct pci_de
printk(KERN_WARNING "PCI: No IRQ known for interrupt pin %c of device %s.%s\n",
'A' + pin, pci_name(dev), msg);
}
- /* VIA bridges use interrupt line for apic/pci steering across
- the V-Link */
- else if (via_interrupt_line_quirk)
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, dev->irq & 15);
return 0;
}
diff -uprN -X dontdiff linux-2.6.12-rc5.orig/drivers/acpi/pci_irq.c linux-2.6.12-rc5/drivers/acpi/pci_irq.c
--- linux-2.6.12-rc5.orig/drivers/acpi/pci_irq.c 2005-05-27 01:43:08.000000000 -0400
+++ linux-2.6.12-rc5/drivers/acpi/pci_irq.c 2005-05-27 02:31:41.000000000 -0400
@@ -391,7 +391,6 @@ acpi_pci_irq_enable (
u8 pin = 0;
int edge_level = ACPI_LEVEL_SENSITIVE;
int active_high_low = ACPI_ACTIVE_LOW;
- extern int via_interrupt_line_quirk;
char *link = NULL;
ACPI_FUNCTION_TRACE("acpi_pci_irq_enable");
@@ -444,9 +443,6 @@ acpi_pci_irq_enable (
}
}
- if (via_interrupt_line_quirk)
- pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq & 15);
-
dev->irq = acpi_register_gsi(irq, edge_level, active_high_low);
printk(KERN_INFO PREFIX "PCI Interrupt %s[%c] -> ",
diff -uprN -X dontdiff linux-2.6.12-rc5.orig/drivers/pci/quirks.c linux-2.6.12-rc5/drivers/pci/quirks.c
--- linux-2.6.12-rc5.orig/drivers/pci/quirks.c 2005-05-27 01:43:34.000000000 -0400
+++ linux-2.6.12-rc5/drivers/pci/quirks.c 2005-05-27 02:35:27.000000000 -0400
@@ -18,6 +18,7 @@
#include <linux/pci.h>
#include <linux/init.h>
#include <linux/delay.h>
+#include <linux/acpi.h>
#include "pci.h"
/* Deal with broken BIOS'es that neglect to enable passive release,
@@ -467,9 +468,6 @@ DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_AM
* non-x86 architectures (yes Via exists on PPC among other places),
* we must mask the PCI_INTERRUPT_LINE value versus 0xf to get
* interrupts delivered properly.
- *
- * TODO: When we have device-specific interrupt routers,
- * quirk_via_irqpic will go away from quirks.
*/
/*
@@ -494,6 +492,29 @@ static void __devinit quirk_via_acpi(str
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C586_3, quirk_via_acpi );
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_DEVICE_ID_VIA_82C686_4, quirk_via_acpi );
+static void __devinit quirk_via_irqpic(struct pci_dev *dev)
+{
+ u8 irq, new_irq;
+
+#ifdef CONFIG_X86_IO_APIC
+ if (nr_ioapics && !skip_ioapic_setup)
+ return;
+#endif
+#ifdef CONFIG_ACPI
+ if (acpi_irq_model != ACPI_IRQ_MODEL_PIC)
+ return;
+#endif
+ new_irq = dev->irq & 0xf;
+ pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &irq);
+ if (new_irq != irq) {
+ printk(KERN_INFO "PCI: Via PIC IRQ fixup for %s, from %d to %d\n",
+ pci_name(dev), irq, new_irq);
+ udelay(15); /* unknown if delay really needed */
+ pci_write_config_byte(dev, PCI_INTERRUPT_LINE, new_irq);
+ }
+}
+DECLARE_PCI_FIXUP_ENABLE(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_irqpic);
+
/*
* PIIX3 USB: We have to disable USB interrupts that are
* hardwired to PIRQD# and may be shared with an
@@ -683,19 +704,6 @@ static void __init quirk_disable_pxb(str
}
DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82454NX, quirk_disable_pxb );
-/*
- * VIA northbridges care about PCI_INTERRUPT_LINE
- */
-int via_interrupt_line_quirk;
-
-static void __devinit quirk_via_bridge(struct pci_dev *pdev)
-{
- if(pdev->devfn == 0) {
- printk(KERN_INFO "PCI: Via IRQ fixup\n");
- via_interrupt_line_quirk = 1;
- }
-}
-DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_VIA, PCI_ANY_ID, quirk_via_bridge );
/*
* Serverworks CSB5 IDE does not fully support native mode
diff -uprN -X dontdiff linux-2.6.12-rc5.orig/include/linux/acpi.h linux-2.6.12-rc5/include/linux/acpi.h
--- linux-2.6.12-rc5.orig/include/linux/acpi.h 2005-05-27 01:44:10.000000000 -0400
+++ linux-2.6.12-rc5/include/linux/acpi.h 2005-05-27 02:47:04.000000000 -0400
@@ -25,6 +25,8 @@
#ifndef _LINUX_ACPI_H
#define _LINUX_ACPI_H
+#ifdef CONFIG_ACPI
+
#ifndef _LINUX
#define _LINUX
#endif
@@ -533,4 +535,5 @@ static inline int acpi_get_pxm(acpi_hand
extern int pnpacpi_disabled;
-#endif /*_LINUX_ACPI_H*/
+#endif /* CONFIG_ACPI */
+#endif /*_LINUX_ACPI_H*/
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
[Index of Archives]
[Kernel Newbies]
[Netfilter]
[Bugtraq]
[Photo]
[Stuff]
[Gimp]
[Yosemite News]
[MIPS Linux]
[ARM Linux]
[Linux Security]
[Linux RAID]
[Video 4 Linux]
[Linux for the blind]
[Linux Resources]
