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TOMOYO Linux Cross Reference
Linux/arch/arm/mach-ixp4xx/coyote-pci.c

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  1 /*
  2  * arch/arm/mach-ixp4xx/coyote-pci.c
  3  *
  4  * PCI setup routines for ADI Engineering Coyote platform
  5  *
  6  * Copyright (C) 2002 Jungo Software Technologies.
  7  * Copyright (C) 2003 MontaVista Softwrae, Inc.
  8  *
  9  * Maintainer: Deepak Saxena <dsaxena@mvista.com>
 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 <mach/hardware.h>
 23 #include <asm/irq.h>
 24 #include <asm/mach/pci.h>
 25 
 26 #define SLOT0_DEVID     14
 27 #define SLOT1_DEVID     15
 28 
 29 /* PCI controller GPIO to IRQ pin mappings */
 30 #define SLOT0_INTA      6
 31 #define SLOT1_INTA      11
 32 
 33 void __init coyote_pci_preinit(void)
 34 {
 35         irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT0_INTA), IRQ_TYPE_LEVEL_LOW);
 36         irq_set_irq_type(IXP4XX_GPIO_IRQ(SLOT1_INTA), IRQ_TYPE_LEVEL_LOW);
 37         ixp4xx_pci_preinit();
 38 }
 39 
 40 static int __init coyote_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
 41 {
 42         if (slot == SLOT0_DEVID)
 43                 return IXP4XX_GPIO_IRQ(SLOT0_INTA);
 44         else if (slot == SLOT1_DEVID)
 45                 return IXP4XX_GPIO_IRQ(SLOT1_INTA);
 46         else return -1;
 47 }
 48 
 49 struct hw_pci coyote_pci __initdata = {
 50         .nr_controllers = 1,
 51         .ops            = &ixp4xx_ops,
 52         .preinit =        coyote_pci_preinit,
 53         .setup =          ixp4xx_setup,
 54         .map_irq =        coyote_map_irq,
 55 };
 56 
 57 int __init coyote_pci_init(void)
 58 {
 59         if (machine_is_adi_coyote())
 60                 pci_common_init(&coyote_pci);
 61         return 0;
 62 }
 63 
 64 subsys_initcall(coyote_pci_init);
 65 

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