diff options
author | Michael-Luke Jones <mlj28@cam.ac.uk> | 2006-12-16 23:04:05 +0100 |
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committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-02-06 16:46:46 +0000 |
commit | 0f1859719537acf5a611fd18be5d81c0cfd5fbf4 (patch) | |
tree | ac9178b8fdbdb098e6e3fda9672cda937fc3ceb5 /arch/arm/mach-ixp4xx/avila-pci.c | |
parent | 6e98a2f88e65d57cff9c98ce1744ff8e4498de31 (diff) | |
download | linux-0f1859719537acf5a611fd18be5d81c0cfd5fbf4.tar.bz2 |
[ARM] 4033/1: Add separate Avila board setup code
This patch adds support for the Gateworks Avila Network Platform in
a separate set of setup files to the IXDP425. This is necessary now
that a driver for the Avila CF card slot is available. It also adds
support for a minor variant on the Avila board known as the Loft,
which has a different number of maximum PCI devices.
Signed-off-by: Michael-Luke Jones <mlj28@cam.ac.uk>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-ixp4xx/avila-pci.c')
-rw-r--r-- | arch/arm/mach-ixp4xx/avila-pci.c | 78 |
1 files changed, 78 insertions, 0 deletions
diff --git a/arch/arm/mach-ixp4xx/avila-pci.c b/arch/arm/mach-ixp4xx/avila-pci.c new file mode 100644 index 000000000000..3f867691d9f2 --- /dev/null +++ b/arch/arm/mach-ixp4xx/avila-pci.c @@ -0,0 +1,78 @@ +/* + * arch/arm/mach-ixp4xx/avila-pci.c + * + * Gateworks Avila board-level PCI initialization + * + * Author: Michael-Luke Jones <mlj28@cam.ac.uk> + * + * Based on ixdp-pci.c + * Copyright (C) 2002 Intel Corporation. + * Copyright (C) 2003-2004 MontaVista Software, Inc. + * + * Maintainer: Deepak Saxena <dsaxena@plexity.net> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + */ + +#include <linux/kernel.h> +#include <linux/pci.h> +#include <linux/init.h> +#include <linux/irq.h> +#include <linux/delay.h> + +#include <asm/mach/pci.h> +#include <asm/irq.h> +#include <asm/hardware.h> +#include <asm/mach-types.h> + +void __init avila_pci_preinit(void) +{ + set_irq_type(IRQ_AVILA_PCI_INTA, IRQT_LOW); + set_irq_type(IRQ_AVILA_PCI_INTB, IRQT_LOW); + set_irq_type(IRQ_AVILA_PCI_INTC, IRQT_LOW); + set_irq_type(IRQ_AVILA_PCI_INTD, IRQT_LOW); + + ixp4xx_pci_preinit(); +} + +static int __init avila_map_irq(struct pci_dev *dev, u8 slot, u8 pin) +{ + static int pci_irq_table[AVILA_PCI_IRQ_LINES] = { + IRQ_AVILA_PCI_INTA, + IRQ_AVILA_PCI_INTB, + IRQ_AVILA_PCI_INTC, + IRQ_AVILA_PCI_INTD + }; + + int irq = -1; + + if (slot >= 1 && + slot <= (machine_is_loft() ? LOFT_PCI_MAX_DEV : AVILA_PCI_MAX_DEV) && + pin >= 1 && pin <= AVILA_PCI_IRQ_LINES) { + irq = pci_irq_table[(slot + pin - 2) % 4]; + } + + return irq; +} + +struct hw_pci avila_pci __initdata = { + .nr_controllers = 1, + .preinit = avila_pci_preinit, + .swizzle = pci_std_swizzle, + .setup = ixp4xx_setup, + .scan = ixp4xx_scan_bus, + .map_irq = avila_map_irq, +}; + +int __init avila_pci_init(void) +{ + if (machine_is_avila() || machine_is_loft()) + pci_common_init(&avila_pci); + return 0; +} + +subsys_initcall(avila_pci_init); + |