mirror of
https://github.com/adulau/aha.git
synced 2024-12-29 12:16:20 +00:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
/*
|
|
* linux/arch/arm/mach-footbridge/personal-pci.c
|
|
*
|
|
* PCI bios-type initialisation for PCI machines
|
|
*
|
|
* Bits taken from various places.
|
|
*/
|
|
#include <linux/kernel.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/irq.h>
|
|
#include <asm/mach/pci.h>
|
|
#include <asm/mach-types.h>
|
|
|
|
static int irqmap_personal_server[] __initdata = {
|
|
IRQ_IN0, IRQ_IN1, IRQ_IN2, IRQ_IN3, 0, 0, 0,
|
|
IRQ_DOORBELLHOST, IRQ_DMA1, IRQ_DMA2, IRQ_PCI
|
|
};
|
|
|
|
static int __init personal_server_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
|
|
{
|
|
unsigned char line;
|
|
|
|
pci_read_config_byte(dev, PCI_INTERRUPT_LINE, &line);
|
|
|
|
if (line > 0x40 && line <= 0x5f) {
|
|
/* line corresponds to the bit controlling this interrupt
|
|
* in the footbridge. Ignore the first 8 interrupt bits,
|
|
* look up the rest in the map. IN0 is bit number 8
|
|
*/
|
|
return irqmap_personal_server[(line & 0x1f) - 8];
|
|
} else if (line == 0) {
|
|
/* no interrupt */
|
|
return 0;
|
|
} else
|
|
return irqmap_personal_server[(line - 1) & 3];
|
|
}
|
|
|
|
static struct hw_pci personal_server_pci __initdata = {
|
|
.map_irq = personal_server_map_irq,
|
|
.nr_controllers = 1,
|
|
.setup = dc21285_setup,
|
|
.scan = dc21285_scan_bus,
|
|
.preinit = dc21285_preinit,
|
|
.postinit = dc21285_postinit,
|
|
};
|
|
|
|
static int __init personal_pci_init(void)
|
|
{
|
|
if (machine_is_personal_server())
|
|
pci_common_init(&personal_server_pci);
|
|
return 0;
|
|
}
|
|
|
|
subsys_initcall(personal_pci_init);
|