summaryrefslogtreecommitdiffstats
path: root/arch/x86/pci/irq.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/pci/irq.c')
-rw-r--r--arch/x86/pci/irq.c58
1 files changed, 27 insertions, 31 deletions
diff --git a/arch/x86/pci/irq.c b/arch/x86/pci/irq.c
index bf69dbe08bf..fecbce6e7d7 100644
--- a/arch/x86/pci/irq.c
+++ b/arch/x86/pci/irq.c
@@ -16,8 +16,7 @@
#include <asm/io_apic.h>
#include <linux/irq.h>
#include <linux/acpi.h>
-
-#include "pci.h"
+#include <asm/pci_x86.h>
#define PIRQ_SIGNATURE (('$' << 0) + ('P' << 8) + ('I' << 16) + ('R' << 24))
#define PIRQ_VERSION 0x0100
@@ -534,7 +533,7 @@ static int pirq_bios_set(struct pci_dev *router, struct pci_dev *dev, int pirq,
{
struct pci_dev *bridge;
int pin = pci_get_interrupt_pin(dev, &bridge);
- return pcibios_set_irq_routing(bridge, pin, irq);
+ return pcibios_set_irq_routing(bridge, pin - 1, irq);
}
#endif
@@ -573,6 +572,7 @@ static __init int intel_router_probe(struct irq_router *r, struct pci_dev *route
case PCI_DEVICE_ID_INTEL_ICH7_1:
case PCI_DEVICE_ID_INTEL_ICH7_30:
case PCI_DEVICE_ID_INTEL_ICH7_31:
+ case PCI_DEVICE_ID_INTEL_TGP_LPC:
case PCI_DEVICE_ID_INTEL_ESB2_0:
case PCI_DEVICE_ID_INTEL_ICH8_0:
case PCI_DEVICE_ID_INTEL_ICH8_1:
@@ -888,7 +888,6 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
dev_dbg(&dev->dev, "no interrupt pin\n");
return 0;
}
- pin = pin - 1;
/* Find IRQ routing entry */
@@ -898,17 +897,17 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
info = pirq_get_info(dev);
if (!info) {
dev_dbg(&dev->dev, "PCI INT %c not found in routing table\n",
- 'A' + pin);
+ 'A' + pin - 1);
return 0;
}
- pirq = info->irq[pin].link;
- mask = info->irq[pin].bitmap;
+ pirq = info->irq[pin - 1].link;
+ mask = info->irq[pin - 1].bitmap;
if (!pirq) {
- dev_dbg(&dev->dev, "PCI INT %c not routed\n", 'A' + pin);
+ dev_dbg(&dev->dev, "PCI INT %c not routed\n", 'A' + pin - 1);
return 0;
}
dev_dbg(&dev->dev, "PCI INT %c -> PIRQ %02x, mask %04x, excl %04x",
- 'A' + pin, pirq, mask, pirq_table->exclusive_irqs);
+ 'A' + pin - 1, pirq, mask, pirq_table->exclusive_irqs);
mask &= pcibios_irq_mask;
/* Work around broken HP Pavilion Notebooks which assign USB to
@@ -950,7 +949,7 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
newirq = i;
}
}
- dev_dbg(&dev->dev, "PCI INT %c -> newirq %d", 'A' + pin, newirq);
+ dev_dbg(&dev->dev, "PCI INT %c -> newirq %d", 'A' + pin - 1, newirq);
/* Check if it is hardcoded */
if ((pirq & 0xf0) == 0xf0) {
@@ -978,18 +977,18 @@ static int pcibios_lookup_irq(struct pci_dev *dev, int assign)
return 0;
}
}
- dev_info(&dev->dev, "%s PCI INT %c -> IRQ %d\n", msg, 'A' + pin, irq);
+ dev_info(&dev->dev, "%s PCI INT %c -> IRQ %d\n", msg, 'A' + pin - 1, irq);
/* Update IRQ for all devices with the same pirq value */
while ((dev2 = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev2)) != NULL) {
pci_read_config_byte(dev2, PCI_INTERRUPT_PIN, &pin);
if (!pin)
continue;
- pin--;
+
info = pirq_get_info(dev2);
if (!info)
continue;
- if (info->irq[pin].link == pirq) {
+ if (info->irq[pin - 1].link == pirq) {
/*
* We refuse to override the dev->irq
* information. Give a warning!
@@ -1043,6 +1042,9 @@ static void __init pcibios_fixup_irqs(void)
dev = NULL;
while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
+ if (!pin)
+ continue;
+
#ifdef CONFIG_X86_IO_APIC
/*
* Recalculate IRQ numbers if we use the I/O APIC.
@@ -1050,15 +1052,11 @@ static void __init pcibios_fixup_irqs(void)
if (io_apic_assign_pci_irqs) {
int irq;
- if (!pin)
- continue;
-
/*
* interrupt pins are numbered starting from 1
*/
- pin--;
irq = IO_APIC_get_PCI_irq_vector(dev->bus->number,
- PCI_SLOT(dev->devfn), pin);
+ PCI_SLOT(dev->devfn), pin - 1);
/*
* Busses behind bridges are typically not listed in the
* MP-table. In this case we have to look up the IRQ
@@ -1071,22 +1069,22 @@ static void __init pcibios_fixup_irqs(void)
struct pci_dev *bridge = dev->bus->self;
int bus;
- pin = (pin + PCI_SLOT(dev->devfn)) % 4;
+ pin = pci_swizzle_interrupt_pin(dev, pin);
bus = bridge->bus->number;
irq = IO_APIC_get_PCI_irq_vector(bus,
- PCI_SLOT(bridge->devfn), pin);
+ PCI_SLOT(bridge->devfn), pin - 1);
if (irq >= 0)
dev_warn(&dev->dev,
"using bridge %s INT %c to "
"get IRQ %d\n",
pci_name(bridge),
- 'A' + pin, irq);
+ 'A' + pin - 1, irq);
}
if (irq >= 0) {
dev_info(&dev->dev,
"PCI->APIC IRQ transform: INT %c "
"-> IRQ %d\n",
- 'A' + pin, irq);
+ 'A' + pin - 1, irq);
dev->irq = irq;
}
}
@@ -1094,7 +1092,7 @@ static void __init pcibios_fixup_irqs(void)
/*
* Still no IRQ? Try to lookup one...
*/
- if (pin && !dev->irq)
+ if (!dev->irq)
pcibios_lookup_irq(dev, 0);
}
}
@@ -1221,12 +1219,10 @@ static int pirq_enable_irq(struct pci_dev *dev)
if (pin && !pcibios_lookup_irq(dev, 1) && !dev->irq) {
char *msg = "";
- pin--; /* interrupt pins are numbered starting from 1 */
-
if (io_apic_assign_pci_irqs) {
int irq;
- irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin);
+ irq = IO_APIC_get_PCI_irq_vector(dev->bus->number, PCI_SLOT(dev->devfn), pin - 1);
/*
* Busses behind bridges are typically not listed in the MP-table.
* In this case we have to look up the IRQ based on the parent bus,
@@ -1237,20 +1233,20 @@ static int pirq_enable_irq(struct pci_dev *dev)
while (irq < 0 && dev->bus->parent) { /* go back to the bridge */
struct pci_dev *bridge = dev->bus->self;
- pin = (pin + PCI_SLOT(dev->devfn)) % 4;
+ pin = pci_swizzle_interrupt_pin(dev, pin);
irq = IO_APIC_get_PCI_irq_vector(bridge->bus->number,
- PCI_SLOT(bridge->devfn), pin);
+ PCI_SLOT(bridge->devfn), pin - 1);
if (irq >= 0)
dev_warn(&dev->dev, "using bridge %s "
"INT %c to get IRQ %d\n",
- pci_name(bridge), 'A' + pin,
+ pci_name(bridge), 'A' + pin - 1,
irq);
dev = bridge;
}
dev = temp_dev;
if (irq >= 0) {
dev_info(&dev->dev, "PCI->APIC IRQ transform: "
- "INT %c -> IRQ %d\n", 'A' + pin, irq);
+ "INT %c -> IRQ %d\n", 'A' + pin - 1, irq);
dev->irq = irq;
return 0;
} else
@@ -1269,7 +1265,7 @@ static int pirq_enable_irq(struct pci_dev *dev)
return 0;
dev_warn(&dev->dev, "can't find IRQ for PCI INT %c%s\n",
- 'A' + pin, msg);
+ 'A' + pin - 1, msg);
}
return 0;
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-16 19:14:28 +0000