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kernel/linux-imx6_3.14.28/arch/arm/mach-footbridge/netwinder-pci.c 1.24 KB
6b13f685e   김민수   BSP 최초 추가
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  /*
   * linux/arch/arm/mach-footbridge/netwinder-pci.c
   *
   * PCI bios-type initialisation for PCI machines
   *
   * Bits taken from various places.
   */
  #include <linux/kernel.h>
  #include <linux/pci.h>
  #include <linux/init.h>
  
  #include <asm/irq.h>
  #include <asm/mach/pci.h>
  #include <asm/mach-types.h>
  
  /*
   * We now use the slot ID instead of the device identifiers to select
   * which interrupt is routed where.
   */
  static int __init netwinder_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
  {
  	switch (slot) {
  	case 0:  /* host bridge */
  		return 0;
  
  	case 9:  /* CyberPro */
  		return IRQ_NETWINDER_VGA;
  
  	case 10: /* DC21143 */
  		return IRQ_NETWINDER_ETHER100;
  
  	case 12: /* Winbond 553 */
  		return IRQ_ISA_HARDDISK1;
  
  	case 13: /* Winbond 89C940F */
  		return IRQ_NETWINDER_ETHER10;
  
  	default:
  		printk(KERN_ERR "PCI: unknown device in slot %s
  ",
  			pci_name(dev));
  		return 0;
  	}
  }
  
  static struct hw_pci netwinder_pci __initdata = {
  	.map_irq		= netwinder_map_irq,
  	.nr_controllers		= 1,
  	.ops			= &dc21285_ops,
  	.setup			= dc21285_setup,
  	.preinit		= dc21285_preinit,
  	.postinit		= dc21285_postinit,
  };
  
  static int __init netwinder_pci_init(void)
  {
  	if (machine_is_netwinder())
  		pci_common_init(&netwinder_pci);
  	return 0;
  }
  
  subsys_initcall(netwinder_pci_init);