Release 4.7 drivers/pci/setup-irq.c
/*
* drivers/pci/setup-irq.c
*
* Extruded from code written by
* Dave Rusling (david.rusling@reo.mts.dec.com)
* David Mosberger (davidm@cs.arizona.edu)
* David Miller (davem@redhat.com)
*
* Support routines for initializing a PCI subsystem.
*/
#include <linux/kernel.h>
#include <linux/pci.h>
#include <linux/errno.h>
#include <linux/ioport.h>
#include <linux/cache.h>
void __weak pcibios_update_irq(struct pci_dev *dev, int irq)
{
dev_dbg(&dev->dev, "assigning IRQ %02d\n", irq);
pci_write_config_byte(dev, PCI_INTERRUPT_LINE, irq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| thierry reding | thierry reding | 35 | 100.00% | 1 | 100.00% |
| Total | 35 | 100.00% | 1 | 100.00% |
static void pdev_fixup_irq(struct pci_dev *dev,
u8 (*swizzle)(struct pci_dev *, u8 *),
int (*map_irq)(const struct pci_dev *, u8, u8))
{
u8 pin, slot;
int irq = 0;
/* If this device is not on the primary bus, we need to figure out
which interrupt pin it will come in on. We know which slot it
will come in on 'cos that slot is where the bridge is. Each
time the interrupt line passes through a PCI-PCI bridge we must
apply the swizzle function. */
pci_read_config_byte(dev, PCI_INTERRUPT_PIN, &pin);
/* Cope with illegal. */
if (pin > 4)
pin = 1;
if (pin != 0) {
/* Follow the chain of bridges, swizzling as we go. */
slot = (*swizzle)(dev, &pin);
irq = (*map_irq)(dev, slot, pin);
if (irq == -1)
irq = 0;
}
dev->irq = irq;
dev_dbg(&dev->dev, "fixup irq: got %d\n", dev->irq);
/* Always tell the device, so the driver knows what is
the real IRQ to use; the device does not use it. */
pcibios_update_irq(dev, irq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 129 | 87.16% | 1 | 14.29% |
| andreas block | andreas block | 11 | 7.43% | 1 | 14.29% |
| bjorn helgaas | bjorn helgaas | 4 | 2.70% | 2 | 28.57% |
| greg kroah-hartman | greg kroah-hartman | 2 | 1.35% | 1 | 14.29% |
| ralf baechle | ralf baechle | 1 | 0.68% | 1 | 14.29% |
| matthew wilcox | matthew wilcox | 1 | 0.68% | 1 | 14.29% |
| Total | 148 | 100.00% | 7 | 100.00% |
void pci_fixup_irqs(u8 (*swizzle)(struct pci_dev *, u8 *),
int (*map_irq)(const struct pci_dev *, u8, u8))
{
struct pci_dev *dev = NULL;
for_each_pci_dev(dev)
pdev_fixup_irq(dev, swizzle, map_irq);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 49 | 89.09% | 1 | 20.00% |
| greg kroah-hartman | greg kroah-hartman | 2 | 3.64% | 1 | 20.00% |
| vasiliy kulikov | vasiliy kulikov | 2 | 3.64% | 1 | 20.00% |
| ryan desfosses | ryan desfosses | 1 | 1.82% | 1 | 20.00% |
| ralf baechle | ralf baechle | 1 | 1.82% | 1 | 20.00% |
| Total | 55 | 100.00% | 5 | 100.00% |
EXPORT_SYMBOL_GPL(pci_fixup_irqs);
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| pre-git | pre-git | 194 | 74.90% | 1 | 8.33% |
| thierry reding | thierry reding | 35 | 13.51% | 1 | 8.33% |
| andreas block | andreas block | 11 | 4.25% | 1 | 8.33% |
| ray jui | ray jui | 5 | 1.93% | 1 | 8.33% |
| greg kroah-hartman | greg kroah-hartman | 4 | 1.54% | 2 | 16.67% |
| bjorn helgaas | bjorn helgaas | 4 | 1.54% | 2 | 16.67% |
| ralf baechle | ralf baechle | 2 | 0.77% | 1 | 8.33% |
| vasiliy kulikov | vasiliy kulikov | 2 | 0.77% | 1 | 8.33% |
| matthew wilcox | matthew wilcox | 1 | 0.39% | 1 | 8.33% |
| ryan desfosses | ryan desfosses | 1 | 0.39% | 1 | 8.33% |
| Total | 259 | 100.00% | 12 | 100.00% |
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