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/*
* $Id$
*
* ADM5120 specific PCI fixups
*
* Copyright (C) ADMtek Incorporated.
* Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
* 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/kernel.h>
#include <linux/init.h>
#include <linux/pci.h>
#include <linux/pci_ids.h>
#include <linux/pci_regs.h>
#include <asm/delay.h>
#include <asm/bootinfo.h>
#include <asm/mach-adm5120/adm5120_info.h>
#include <asm/mach-adm5120/adm5120_defs.h>
#include <asm/mach-adm5120/adm5120_irq.h>
struct adm5120_pci_irq {
u8 slot;
u8 func;
u8 pin;
unsigned irq;
};
#define PCIIRQ(s,f,p,i) { \
.slot = (s), \
.func = (f), \
.pin = (p), \
.irq = (i) \
}
static struct adm5120_pci_irq default_pci_irqs[] __initdata = {
PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
};
static struct adm5120_pci_irq rb1xx_pci_irqs[] __initdata = {
PCIIRQ(1, 0, 1, ADM5120_IRQ_PCI0),
PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI1),
PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI2)
};
static struct adm5120_pci_irq cas771_pci_irqs[] __initdata = {
PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI1),
PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
};
static struct adm5120_pci_irq np28g_pci_irqs[] __initdata = {
PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI0),
PCIIRQ(3, 1, 2, ADM5120_IRQ_PCI1),
PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
};
#define GETMAP(n) do { \
nr_irqs = ARRAY_SIZE(n ## _pci_irqs); \
p = n ## _pci_irqs; \
} while (0)
int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
struct adm5120_pci_irq *p;
int nr_irqs;
int i;
int irq;
irq = -1;
if (slot < 1 || slot > 3) {
printk(KERN_ALERT "PCI: slot number %u is not supported\n",
slot);
goto out;
}
GETMAP(default);
switch (mips_machtype) {
case MACH_ADM5120_RB_111:
case MACH_ADM5120_RB_112:
case MACH_ADM5120_RB_133:
case MACH_ADM5120_RB_133C:
case MACH_ADM5120_RB_153:
GETMAP(rb1xx);
break;
case MACH_ADM5120_NP28G:
GETMAP(np28g);
break;
case MACH_ADM5120_P335:
case MACH_ADM5120_P334WT:
/* using default mapping */
break;
case MACH_ADM5120_CAS771:
GETMAP(cas771);
break;
case MACH_ADM5120_NP27G:
case MACH_ADM5120_NP28GHS:
case MACH_ADM5120_WP54AG:
case MACH_ADM5120_WP54G:
case MACH_ADM5120_WP54G_WRT:
case MACH_ADM5120_WPP54AG:
case MACH_ADM5120_WPP54G:
default:
printk(KERN_ALERT "PCI: irq map is unknown, using defaults.\n");
break;
}
for (i=0; i<nr_irqs; i++, p++) {
if ((p->slot == slot) && (PCI_FUNC(dev->devfn) == p->func) &&
(p->pin == pin)) {
irq = p->irq;
break;
}
}
if (irq < 0) {
printk(KERN_ALERT "PCI: no irq found for %s pin:%u\n",
pci_name(dev), pin);
} else {
printk(KERN_INFO "PCI: mapping irq for %s pin:%u, irq:%d\n",
pci_name(dev), pin, irq);
}
out:
return irq;
}
static void adm5120_pci_fixup(struct pci_dev *dev)
{
if (dev->devfn != 0)
return;
/* setup COMMAND register */
pci_write_config_word(dev, PCI_COMMAND,
(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
/* setup CACHE_LINE_SIZE register */
pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
/* setting up BARS */
pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0);
pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
}
DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADMTEK, PCI_DEVICE_ID_ADMTEK_ADM5120,
adm5120_pci_fixup);
int pcibios_plat_dev_init(struct pci_dev *dev)
{
return 0;
}
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