mirror of https://github.com/hak5/openwrt.git
60 lines
1.5 KiB
C
60 lines
1.5 KiB
C
/*
|
|
* Copyright (C) ADMtek Incorporated.
|
|
* Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
|
|
*/
|
|
|
|
#include <linux/autoconf.h>
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
|
|
volatile u32* pci_config_address_reg = (volatile u32*)KSEG1ADDR(0x115ffff0);
|
|
volatile u32* pci_config_data_reg = (volatile u32*)KSEG1ADDR(0x115ffff8);
|
|
|
|
#define PCI_ENABLE 0x80000000
|
|
|
|
static int pci_config_read(struct pci_bus *bus, unsigned int devfn, int where,
|
|
int size, uint32_t *val)
|
|
{
|
|
*pci_config_address_reg = ((bus->number & 0xff) << 0x10) |
|
|
((devfn & 0xff) << 0x08) | (where & 0xfc) | PCI_ENABLE;
|
|
switch (size) {
|
|
case 1:
|
|
*val = ((*pci_config_data_reg)>>((where&3)<<3))&0xff;
|
|
break;
|
|
case 2:
|
|
*val = ((*pci_config_data_reg)>>((where&3)<<3))&0xffff;
|
|
break;
|
|
default:
|
|
*val = (*pci_config_data_reg);
|
|
}
|
|
return PCIBIOS_SUCCESSFUL;
|
|
}
|
|
|
|
static int pci_config_write(struct pci_bus *bus, unsigned int devfn, int where,
|
|
int size, uint32_t val)
|
|
{
|
|
*pci_config_address_reg = ((bus->number & 0xff) << 0x10) |
|
|
((devfn & 0xff) << 0x08) | (where & 0xfc) | PCI_ENABLE;
|
|
switch (size) {
|
|
case 1:
|
|
*(volatile u8 *)(((int)pci_config_data_reg) +
|
|
(where & 3)) = val;
|
|
break;
|
|
case 2:
|
|
*(volatile u16 *)(((int)pci_config_data_reg) +
|
|
(where & 2)) = (val);
|
|
break;
|
|
default:
|
|
*pci_config_data_reg = (val);
|
|
}
|
|
|
|
return PCIBIOS_SUCCESSFUL;
|
|
}
|
|
|
|
struct pci_ops adm5120_pci_ops = {
|
|
.read = pci_config_read,
|
|
.write = pci_config_write,
|
|
};
|