175 lines
4.1 KiB
C
175 lines
4.1 KiB
C
/*
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* $Id$
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*
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* ADM5120 specific PCI fixups
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*
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* Copyright (C) ADMtek Incorporated.
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* Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
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* Copyright (C) 2007 Gabor Juhos <juhosg at openwrt.org>
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* Copyright (C) 2007 OpenWrt.org
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*
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*/
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#include <linux/types.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/pci_ids.h>
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#include <linux/pci_regs.h>
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#include <asm/delay.h>
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#include <asm/bootinfo.h>
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#include <asm/mach-adm5120/adm5120_info.h>
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#include <asm/mach-adm5120/adm5120_defs.h>
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#include <asm/mach-adm5120/adm5120_irq.h>
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struct adm5120_pci_irq {
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u8 slot;
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u8 func;
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u8 pin;
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unsigned irq;
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};
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#define PCIIRQ(s,f,p,i) { \
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.slot = (s), \
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.func = (f), \
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.pin = (p), \
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.irq = (i) \
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}
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static struct adm5120_pci_irq default_pci_irqs[] __initdata = {
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PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
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};
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static struct adm5120_pci_irq rb1xx_pci_irqs[] __initdata = {
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PCIIRQ(1, 0, 1, ADM5120_IRQ_PCI0),
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PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI1),
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PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI2)
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};
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static struct adm5120_pci_irq cas771_pci_irqs[] __initdata = {
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PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
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PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI1),
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PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
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};
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static struct adm5120_pci_irq np28g_pci_irqs[] __initdata = {
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PCIIRQ(2, 0, 1, ADM5120_IRQ_PCI0),
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PCIIRQ(3, 0, 1, ADM5120_IRQ_PCI0),
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PCIIRQ(3, 1, 2, ADM5120_IRQ_PCI1),
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PCIIRQ(3, 2, 3, ADM5120_IRQ_PCI2)
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};
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#define GETMAP(n) do { \
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nr_irqs = ARRAY_SIZE(n ## _pci_irqs); \
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p = n ## _pci_irqs; \
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} while (0)
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int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
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{
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struct adm5120_pci_irq *p;
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int nr_irqs;
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int i;
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int irq;
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irq = -1;
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if (slot < 1 || slot > 3) {
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printk(KERN_ALERT "PCI: slot number %u is not supported\n",
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slot);
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goto out;
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}
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GETMAP(default);
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switch (mips_machtype) {
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case MACH_ADM5120_RB_111:
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case MACH_ADM5120_RB_112:
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case MACH_ADM5120_RB_133:
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case MACH_ADM5120_RB_133C:
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case MACH_ADM5120_RB_153:
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GETMAP(rb1xx);
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break;
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case MACH_ADM5120_NP28G:
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GETMAP(np28g);
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break;
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case MACH_ADM5120_P335:
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case MACH_ADM5120_P334WT:
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/* using default mapping */
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break;
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case MACH_ADM5120_CAS771:
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GETMAP(cas771);
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break;
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case MACH_ADM5120_NP27G:
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case MACH_ADM5120_NP28GHS:
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case MACH_ADM5120_WP54AG:
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case MACH_ADM5120_WP54G:
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case MACH_ADM5120_WP54G_WRT:
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case MACH_ADM5120_WPP54AG:
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case MACH_ADM5120_WPP54G:
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default:
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printk(KERN_ALERT "PCI: irq map is unknown, using defaults.\n");
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break;
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}
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for (i=0; i<nr_irqs; i++, p++) {
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if ((p->slot == slot) && (PCI_FUNC(dev->devfn) == p->func) &&
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(p->pin == pin)) {
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irq = p->irq;
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break;
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}
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}
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if (irq < 0) {
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printk(KERN_ALERT "PCI: no irq found for %s pin:%u\n",
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pci_name(dev), pin);
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} else {
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printk(KERN_INFO "PCI: mapping irq for %s pin:%u, irq:%d\n",
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pci_name(dev), pin, irq);
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}
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out:
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return irq;
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}
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static void adm5120_pci_fixup(struct pci_dev *dev)
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{
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if (dev->devfn != 0)
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return;
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/* setup COMMAND register */
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pci_write_config_word(dev, PCI_COMMAND,
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(PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
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/* setup CACHE_LINE_SIZE register */
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pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
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/* setting up BARS */
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pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0);
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pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
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}
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DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADMTEK, PCI_DEVICE_ID_ADMTEK_ADM5120,
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adm5120_pci_fixup);
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int pcibios_plat_dev_init(struct pci_dev *dev)
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{
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return 0;
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}
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