2019-06-04 11:11:33 +03:00
// SPDX-License-Identifier: GPL-2.0-only
2006-01-04 20:17:11 +03:00
/*
* arch / arm / mach - ixp4xx / nas100d - pci . c
*
* NAS 100 d board - level PCI initialization
*
* based on ixdp425 - pci . c :
* Copyright ( C ) 2002 Intel Corporation .
* Copyright ( C ) 2003 - 2004 MontaVista Software , Inc .
*
* Maintainer : http : //www.nslu2-linux.org/
*/
# include <linux/pci.h>
# include <linux/init.h>
2006-07-02 02:01:49 +04:00
# include <linux/irq.h>
2006-01-04 20:17:11 +03:00
# include <asm/mach/pci.h>
# include <asm/mach-types.h>
2018-12-29 17:47:52 +03:00
# include "irqs.h"
2009-11-17 20:48:23 +03:00
# define MAX_DEV 3
# define IRQ_LINES 3
2009-11-16 18:06:47 +03:00
/* PCI controller GPIO to IRQ pin mappings */
2009-11-17 20:48:23 +03:00
# define INTA 11
# define INTB 10
# define INTC 9
# define INTD 8
# define INTE 7
2009-11-16 18:06:47 +03:00
2006-01-04 20:17:11 +03:00
void __init nas100d_pci_preinit ( void )
{
2011-03-24 15:25:22 +03:00
irq_set_irq_type ( IXP4XX_GPIO_IRQ ( INTA ) , IRQ_TYPE_LEVEL_LOW ) ;
irq_set_irq_type ( IXP4XX_GPIO_IRQ ( INTB ) , IRQ_TYPE_LEVEL_LOW ) ;
irq_set_irq_type ( IXP4XX_GPIO_IRQ ( INTC ) , IRQ_TYPE_LEVEL_LOW ) ;
irq_set_irq_type ( IXP4XX_GPIO_IRQ ( INTD ) , IRQ_TYPE_LEVEL_LOW ) ;
irq_set_irq_type ( IXP4XX_GPIO_IRQ ( INTE ) , IRQ_TYPE_LEVEL_LOW ) ;
2006-01-04 20:17:11 +03:00
ixp4xx_pci_preinit ( ) ;
}
2011-06-10 18:30:21 +04:00
static int __init nas100d_map_irq ( const struct pci_dev * dev , u8 slot , u8 pin )
2006-01-04 20:17:11 +03:00
{
2009-11-17 20:48:23 +03:00
static int pci_irq_table [ MAX_DEV ] [ IRQ_LINES ] = {
{ IXP4XX_GPIO_IRQ ( INTA ) , - 1 , - 1 } ,
{ IXP4XX_GPIO_IRQ ( INTB ) , - 1 , - 1 } ,
{ IXP4XX_GPIO_IRQ ( INTC ) , IXP4XX_GPIO_IRQ ( INTD ) ,
IXP4XX_GPIO_IRQ ( INTE ) } ,
2006-01-04 20:17:11 +03:00
} ;
2009-11-17 20:48:23 +03:00
if ( slot > = 1 & & slot < = MAX_DEV & & pin > = 1 & & pin < = IRQ_LINES )
return pci_irq_table [ slot - 1 ] [ pin - 1 ] ;
2006-01-04 20:17:11 +03:00
2009-11-17 20:48:23 +03:00
return - 1 ;
2006-01-04 20:17:11 +03:00
}
struct hw_pci __initdata nas100d_pci = {
. nr_controllers = 1 ,
2012-03-10 16:49:16 +04:00
. ops = & ixp4xx_ops ,
2006-01-04 20:17:11 +03:00
. preinit = nas100d_pci_preinit ,
. setup = ixp4xx_setup ,
. map_irq = nas100d_map_irq ,
} ;
int __init nas100d_pci_init ( void )
{
if ( machine_is_nas100d ( ) )
pci_common_init ( & nas100d_pci ) ;
return 0 ;
}
subsys_initcall ( nas100d_pci_init ) ;