target/linux/adm5120-2.6/files/arch/mips/pci/fixup-adm5120.c

   1 /*
   2  *  $Id$
   3  *
   4  *  ADM5120 specific PCI fixups
   5  *
   6  *  Copyright (C) ADMtek Incorporated.
   7  *  Copyright (C) 2005 Jeroen Vreeken (pe1rxq@amsat.org)
   8  *  Copyright (C) 2007 Gabor Juhos <juhosg@freemail.hu>
   9  *  Copyright (C) 2007 OpenWrt.org
  10  *
  11  *  This program is free software; you can redistribute it and/or
  12  *  modify it under the terms of the GNU General Public License
  13  *  as published by the Free Software Foundation; either version 2
  14  *  of the License, or (at your option) any later version.
  15  *
  16  *  This program is distributed in the hope that it will be useful,
  17  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  *  GNU General Public License for more details.
  20  *
  21  *  You should have received a copy of the GNU General Public License
  22  *  along with this program; if not, write to the
  23  *  Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  24  *  Boston, MA  02110-1301, USA.
  25  *
  26  */
  27
  28 #include <linux/autoconf.h>
  29 #include <linux/types.h>
  30 #include <linux/kernel.h>
  31 #include <linux/init.h>
  32 #include <linux/pci.h>
  33 #include <linux/pci_ids.h>
  34 #include <linux/pci_regs.h>
  35
  36 #include <asm/delay.h>
  37 #include <asm/bootinfo.h>
  38
  39 #include <asm/mach-adm5120/adm5120_info.h>
  40 #include <asm/mach-adm5120/adm5120_defs.h>
  41 #include <asm/mach-adm5120/adm5120_irq.h>
  42
  43 static void adm5120_pci_fixup(struct pci_dev *dev)
  44 {
  45         if (dev->devfn !=0)
  46                 return;
  47
  48         /* setup COMMAND register */
  49         pci_write_config_word(dev, PCI_COMMAND,
  50                 (PCI_COMMAND_IO | PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER));
  51
  52         /* setup CACHE_LINE_SIZE register */
  53         pci_write_config_byte(dev, PCI_CACHE_LINE_SIZE, 4);
  54
  55         /* setting up BARS */
  56         pci_write_config_dword(dev, PCI_BASE_ADDRESS_0, 0);
  57         pci_write_config_dword(dev, PCI_BASE_ADDRESS_1, 0);
  58 }
  59
  60 DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_ADMTEK, PCI_DEVICE_ID_ADMTEK_ADM5120,
  61         adm5120_pci_fixup);
  62
  63
  64 int __init pcibios_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  65 {
  66         int irq;
  67
  68         irq = -1;
  69 #if 1
  70         /* FIXME: this code should be working on all boards? */
  71         if (slot > 0 && slot < 4)
  72                 irq = ADM5120_IRQ_PCI0+slot-1;
  73 #else
  74         switch (mips_machtype) {
  75         case MACH_ADM5120_RB_111:
  76         case MACH_ADM5120_RB_112:
  77         case MACH_ADM5120_RB_133:
  78         case MACH_ADM5120_RB_133C:
  79         case MACH_ADM5120_RB_153:
  80                 if (slot > 0 && slot < 4)
  81                         irq = ADM5120_IRQ_PCI0+slot-1;
  82                 break;
  83         default:
  84                 if (slot > 1 && slot < 5)
  85                         irq = ADM5120_IRQ_PCI0+slot-2;
  86                 break;
  87         }
  88 #endif
  89         printk(KERN_INFO "PCI: mapping irq for device %s, slot:%u, pin:%u, "
  90                 "irq:%d\n", pci_name(dev), slot, pin, irq);
  91
  92         return irq;
  93 }
  94
  95 int pcibios_plat_dev_init(struct pci_dev *dev)
  96 {
  97         return 0;
  98 }
  99