arch/arm/mach-ixp4xx/sg5xx-pci.c

   1 /*
   2  * arch/arch/mach-ixp4xx/sg5xx-pci.c
   3  *
   4  * PCI setup routines for Cyberguard/SnapGear SG5XX family boards
   5  *
   6  * Copyright (C) 2005 SnapGear Inc
   7  * Copyright (C) 2004 MontaVista Softwrae, Inc.
   8  *
   9  * Maintainer: Cyberguard Inc
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License version 2 as
  13  * published by the Free Software Foundation.
  14  *
  15  */
  16
  17 #include <linux/kernel.h>
  18 #include <linux/pci.h>
  19 #include <linux/init.h>
  20 #include <linux/irq.h>
  21 #include <asm/mach-types.h>
  22 #include <asm/hardware.h>
  23 #include <asm/irq.h>
  24 #include <asm/mach/pci.h>
  25
  26 extern void ixp4xx_pci_preinit(void);
  27 extern int ixp4xx_setup(int nr, struct pci_sys_data *sys);
  28 extern struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys);
  29
  30 void __init sg5xx_pci_preinit(void)
  31 {
  32         set_irq_type(IRQ_IXP4XX_GPIO8, IRQT_LOW);
  33         ixp4xx_pci_preinit();
  34 }
  35
  36 static int __init sg5xx_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
  37 {
  38         if (slot == 12 || slot == 14)
  39                 return IRQ_IXP4XX_GPIO8;
  40         return -1;
  41 }
  42
  43 struct hw_pci sg5xx_pci __initdata = {
  44         .nr_controllers = 1,
  45         .preinit =        sg5xx_pci_preinit,
  46         .swizzle =        pci_std_swizzle,
  47         .setup =          ixp4xx_setup,
  48         .scan =           ixp4xx_scan_bus,
  49         .map_irq =        sg5xx_map_irq,
  50 };
  51
  52 int __init sg5xx_pci_init(void)
  53 {
  54         if (machine_is_sg565() || machine_is_sg8100())
  55                 pci_common_init(&sg5xx_pci);
  56         return 0;
  57 }
  58
  59 subsys_initcall(sg5xx_pci_init);