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/*
* Copyright (C) ADMtek Incorporated.
* Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
* Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
* Copyright (C) 2007 OpenWrt.org
*/
#include <linux/autoconf.h>
#include <linux/types.h>
#include <linux/pci.h>
#include <linux/kernel.h>
#include <linux/init.h>
#include <adm5120_defs.h>
volatile u32* pci_config_address_reg = (volatile u32*)KSEG1ADDR(ADM5120_PCICFG_ADDR);
volatile u32* pci_config_data_reg = (volatile u32*)KSEG1ADDR(ADM5120_PCICFG_DATA);
#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,
};
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