mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-09-20 12:48:34 +03:00
8366dfac71
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@7464 3c298f89-4303-0410-b956-a3cf2f4a3e73
84 lines
2.4 KiB
C
84 lines
2.4 KiB
C
/*
|
|
* $Id$
|
|
*
|
|
* ADM5120 specific PCI operations
|
|
*
|
|
* 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
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the
|
|
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
|
|
* Boston, MA 02110-1301, USA.
|
|
*
|
|
*/
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/pci.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
|
|
#include <asm/mach-adm5120/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);
|
|
break;
|
|
}
|
|
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,
|
|
};
|