arch/arm/mach-ixp2000/enp2611.c - third_party/linux - Git at Google

 /*
  * arch/arm/mach-ixp2000/enp2611.c
  *
  * Radisys ENP-2611 support.
  *
  * Created 2004 by Lennert Buytenhek from the ixdp2x01 code.  The
  * original version carries the following notices:
  *
  * Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com>
  * Maintainer: Deepak Saxena <dsaxena@plexity.net>
  *
  * Copyright (C) 2002-2003 Intel Corp.
  * Copyright (C) 2003-2004 MontaVista Software, Inc.
  *
  *  This program is free software; you can redistribute  it and/or modify it
  *  under  the terms of  the GNU General  Public License as published by the
  *  Free Software Foundation;  either version 2 of the  License, or (at your
  *  option) any later version.
  */

 #include <linux/kernel.h>
 #include <linux/init.h>
 #include <linux/mm.h>
 #include <linux/sched.h>
 #include <linux/interrupt.h>
 #include <linux/bitops.h>
 #include <linux/pci.h>
 #include <linux/ioport.h>
 #include <linux/delay.h>
 #include <linux/serial.h>
 #include <linux/tty.h>
 #include <linux/serial_core.h>
 #include <linux/platform_device.h>
 #include <linux/io.h>

 #include <asm/irq.h>
 #include <asm/pgtable.h>
 #include <asm/page.h>
 #include <asm/system.h>
 #include <mach/hardware.h>
 #include <asm/mach-types.h>

 #include <asm/mach/pci.h>
 #include <asm/mach/map.h>
 #include <asm/mach/irq.h>
 #include <asm/mach/time.h>
 #include <asm/mach/arch.h>
 #include <asm/mach/flash.h>

 /*************************************************************************
  * ENP-2611 timer tick configuration
  *************************************************************************/
 static void __init enp2611_timer_init(void)
 {
 	ixp2000_init_time(50 * 1000 * 1000);
 }

 static struct sys_timer enp2611_timer = {
 	.init		= enp2611_timer_init,
 	.offset		= ixp2000_gettimeoffset,
 };


 /*************************************************************************
  * ENP-2611 I/O
  *************************************************************************/
 static struct map_desc enp2611_io_desc[] __initdata = {
 	{
 		.virtual	= ENP2611_CALEB_VIRT_BASE,
 		.pfn		= __phys_to_pfn(ENP2611_CALEB_PHYS_BASE),
 		.length		= ENP2611_CALEB_SIZE,
 		.type		= MT_DEVICE,
 	}, {
 		.virtual	= ENP2611_PM3386_0_VIRT_BASE,
 		.pfn		= __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE),
 		.length		= ENP2611_PM3386_0_SIZE,
 		.type		= MT_DEVICE,
 	}, {
 		.virtual	= ENP2611_PM3386_1_VIRT_BASE,
 		.pfn		= __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE),
 		.length		= ENP2611_PM3386_1_SIZE,
 		.type		= MT_DEVICE,
 	}
 };

 void __init enp2611_map_io(void)
 {
 	ixp2000_map_io();
 	iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc));
 }


 /*************************************************************************
  * ENP-2611 PCI
  *************************************************************************/
 static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
 {
 	sys->mem_offset = 0xe0000000;
 	ixp2000_pci_setup(nr, sys);
 	return 1;
 }

 static void __init enp2611_pci_preinit(void)
 {
 	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
 	ixp2000_pci_preinit();
 	pcibios_setup("firmware");
 }

 static inline int enp2611_pci_valid_device(struct pci_bus *bus,
 						unsigned int devfn)
 {
 	/* The 82559 ethernet controller appears at both PCI:1:0:0 and
 	 * PCI:1:2:0, so let's pretend the second one isn't there.
 	 */
 	if (bus->number == 0x01 && devfn == 0x10)
 		return 0;

 	return 1;
 }

 static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn,
 					int where, int size, u32 *value)
 {
 	if (enp2611_pci_valid_device(bus, devfn))
 		return ixp2000_pci_read_config(bus, devfn, where, size, value);

 	return PCIBIOS_DEVICE_NOT_FOUND;
 }

 static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn,
 					int where, int size, u32 value)
 {
 	if (enp2611_pci_valid_device(bus, devfn))
 		return ixp2000_pci_write_config(bus, devfn, where, size, value);

 	return PCIBIOS_DEVICE_NOT_FOUND;
 }

 static struct pci_ops enp2611_pci_ops = {
 	.read   = enp2611_pci_read_config,
 	.write  = enp2611_pci_write_config
 };

 static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
 						struct pci_sys_data *sys)
 {
 	return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
 }

 static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot,
 	u8 pin)
 {
 	int irq;

 	if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 0) {
 		/* IXP2400. */
 		irq = IRQ_IXP2000_PCIA;
 	} else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 1) {
 		/* 21555 non-transparent bridge.  */
 		irq = IRQ_IXP2000_PCIB;
 	} else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 4) {
 		/* PCI2050B transparent bridge.  */
 		irq = -1;
 	} else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 0) {
 		/* 82559 ethernet.  */
 		irq = IRQ_IXP2000_PCIA;
 	} else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 1) {
 		/* SPI-3 option board.  */
 		irq = IRQ_IXP2000_PCIB;
 	} else {
 		printk(KERN_ERR "enp2611_pci_map_irq() called for unknown "
 				"device PCI:%d:%d:%d\n", dev->bus->number,
 				PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
 		irq = -1;
 	}

 	return irq;
 }

 struct hw_pci enp2611_pci __initdata = {
 	.nr_controllers	= 1,
 	.setup		= enp2611_pci_setup,
 	.preinit	= enp2611_pci_preinit,
 	.scan		= enp2611_pci_scan_bus,
 	.map_irq	= enp2611_pci_map_irq,
 };

 int __init enp2611_pci_init(void)
 {
 	if (machine_is_enp2611())
 		pci_common_init(&enp2611_pci);

 	return 0;
 }

 subsys_initcall(enp2611_pci_init);


 /*************************************************************************
  * ENP-2611 Machine Initialization
  *************************************************************************/
 static struct flash_platform_data enp2611_flash_platform_data = {
 	.map_name	= "cfi_probe",
 	.width		= 1,
 };

 static struct ixp2000_flash_data enp2611_flash_data = {
 	.platform_data	= &enp2611_flash_platform_data,
 	.nr_banks	= 1
 };

 static struct resource enp2611_flash_resource = {
 	.start		= 0xc4000000,
 	.end		= 0xc4000000 + 0x00ffffff,
 	.flags		= IORESOURCE_MEM,
 };

 static struct platform_device enp2611_flash = {
 	.name		= "IXP2000-Flash",
 	.id		= 0,
 	.dev		= {
 		.platform_data = &enp2611_flash_data,
 	},
 	.num_resources	= 1,
 	.resource	= &enp2611_flash_resource,
 };

 static struct ixp2000_i2c_pins enp2611_i2c_gpio_pins = {
 	.sda_pin	= ENP2611_GPIO_SDA,
 	.scl_pin	= ENP2611_GPIO_SCL,
 };

 static struct platform_device enp2611_i2c_controller = {
 	.name		= "IXP2000-I2C",
 	.id		= 0,
 	.dev		= {
 		.platform_data = &enp2611_i2c_gpio_pins
 	},
 	.num_resources	= 0
 };

 static struct platform_device *enp2611_devices[] __initdata = {
 	&enp2611_flash,
 	&enp2611_i2c_controller
 };

 static void __init enp2611_init_machine(void)
 {
 	platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
 	ixp2000_uart_init();
 }


 MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board")
 	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
 	.atag_offset	= 0x100,
 	.map_io		= enp2611_map_io,
 	.init_irq	= ixp2000_init_irq,
 	.timer		= &enp2611_timer,
 	.init_machine	= enp2611_init_machine,
 MACHINE_END
	/*
	* arch/arm/mach-ixp2000/enp2611.c
	*
	* Radisys ENP-2611 support.
	*
	* Created 2004 by Lennert Buytenhek from the ixdp2x01 code. The
	* original version carries the following notices:
	*
	* Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com>
	* Maintainer: Deepak Saxena <dsaxena@plexity.net>
	*
	* Copyright (C) 2002-2003 Intel Corp.
	* Copyright (C) 2003-2004 MontaVista Software, Inc.
	*
	* This program is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License as published by the
	* Free Software Foundation; either version 2 of the License, or (at your
	* option) any later version.
	*/

	#include <linux/kernel.h>
	#include <linux/init.h>
	#include <linux/mm.h>
	#include <linux/sched.h>
	#include <linux/interrupt.h>
	#include <linux/bitops.h>
	#include <linux/pci.h>
	#include <linux/ioport.h>
	#include <linux/delay.h>
	#include <linux/serial.h>
	#include <linux/tty.h>
	#include <linux/serial_core.h>
	#include <linux/platform_device.h>
	#include <linux/io.h>

	#include <asm/irq.h>
	#include <asm/pgtable.h>
	#include <asm/page.h>
	#include <asm/system.h>
	#include <mach/hardware.h>
	#include <asm/mach-types.h>

	#include <asm/mach/pci.h>
	#include <asm/mach/map.h>
	#include <asm/mach/irq.h>
	#include <asm/mach/time.h>
	#include <asm/mach/arch.h>
	#include <asm/mach/flash.h>

	/*************************************************************************
	* ENP-2611 timer tick configuration
	*************************************************************************/
	static void __init enp2611_timer_init(void)
	{
	ixp2000_init_time(50 * 1000 * 1000);
	}

	static struct sys_timer enp2611_timer = {
	.init = enp2611_timer_init,
	.offset = ixp2000_gettimeoffset,
	};


	/*************************************************************************
	* ENP-2611 I/O
	*************************************************************************/
	static struct map_desc enp2611_io_desc[] __initdata = {
	{
	.virtual = ENP2611_CALEB_VIRT_BASE,
	.pfn = __phys_to_pfn(ENP2611_CALEB_PHYS_BASE),
	.length = ENP2611_CALEB_SIZE,
	.type = MT_DEVICE,
	}, {
	.virtual = ENP2611_PM3386_0_VIRT_BASE,
	.pfn = __phys_to_pfn(ENP2611_PM3386_0_PHYS_BASE),
	.length = ENP2611_PM3386_0_SIZE,
	.type = MT_DEVICE,
	}, {
	.virtual = ENP2611_PM3386_1_VIRT_BASE,
	.pfn = __phys_to_pfn(ENP2611_PM3386_1_PHYS_BASE),
	.length = ENP2611_PM3386_1_SIZE,
	.type = MT_DEVICE,
	}
	};

	void __init enp2611_map_io(void)
	{
	ixp2000_map_io();
	iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc));
	}


	/*************************************************************************
	* ENP-2611 PCI
	*************************************************************************/
	static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
	{
	sys->mem_offset = 0xe0000000;
	ixp2000_pci_setup(nr, sys);
	return 1;
	}

	static void __init enp2611_pci_preinit(void)
	{
	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
	ixp2000_pci_preinit();
	pcibios_setup("firmware");
	}

	static inline int enp2611_pci_valid_device(struct pci_bus *bus,
	unsigned int devfn)
	{
	/* The 82559 ethernet controller appears at both PCI:1:0:0 and
	* PCI:1:2:0, so let's pretend the second one isn't there.
	*/
	if (bus->number == 0x01 && devfn == 0x10)
	return 0;

	return 1;
	}

	static int enp2611_pci_read_config(struct pci_bus *bus, unsigned int devfn,
	int where, int size, u32 *value)
	{
	if (enp2611_pci_valid_device(bus, devfn))
	return ixp2000_pci_read_config(bus, devfn, where, size, value);

	return PCIBIOS_DEVICE_NOT_FOUND;
	}

	static int enp2611_pci_write_config(struct pci_bus *bus, unsigned int devfn,
	int where, int size, u32 value)
	{
	if (enp2611_pci_valid_device(bus, devfn))
	return ixp2000_pci_write_config(bus, devfn, where, size, value);

	return PCIBIOS_DEVICE_NOT_FOUND;
	}

	static struct pci_ops enp2611_pci_ops = {
	.read = enp2611_pci_read_config,
	.write = enp2611_pci_write_config
	};

	static struct pci_bus * __init enp2611_pci_scan_bus(int nr,
	struct pci_sys_data *sys)
	{
	return pci_scan_bus(sys->busnr, &enp2611_pci_ops, sys);
	}

	static int __init enp2611_pci_map_irq(const struct pci_dev *dev, u8 slot,
	u8 pin)
	{
	int irq;

	if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 0) {
	/* IXP2400. */
	irq = IRQ_IXP2000_PCIA;
	} else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 1) {
	/* 21555 non-transparent bridge. */
	irq = IRQ_IXP2000_PCIB;
	} else if (dev->bus->number == 0 && PCI_SLOT(dev->devfn) == 4) {
	/* PCI2050B transparent bridge. */
	irq = -1;
	} else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 0) {
	/* 82559 ethernet. */
	irq = IRQ_IXP2000_PCIA;
	} else if (dev->bus->number == 1 && PCI_SLOT(dev->devfn) == 1) {
	/* SPI-3 option board. */
	irq = IRQ_IXP2000_PCIB;
	} else {
	printk(KERN_ERR "enp2611_pci_map_irq() called for unknown "
	"device PCI:%d:%d:%d\n", dev->bus->number,
	PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
	irq = -1;
	}

	return irq;
	}

	struct hw_pci enp2611_pci __initdata = {
	.nr_controllers = 1,
	.setup = enp2611_pci_setup,
	.preinit = enp2611_pci_preinit,
	.scan = enp2611_pci_scan_bus,
	.map_irq = enp2611_pci_map_irq,
	};

	int __init enp2611_pci_init(void)
	{
	if (machine_is_enp2611())
	pci_common_init(&enp2611_pci);

	return 0;
	}

	subsys_initcall(enp2611_pci_init);


	/*************************************************************************
	* ENP-2611 Machine Initialization
	*************************************************************************/
	static struct flash_platform_data enp2611_flash_platform_data = {
	.map_name = "cfi_probe",
	.width = 1,
	};

	static struct ixp2000_flash_data enp2611_flash_data = {
	.platform_data = &enp2611_flash_platform_data,
	.nr_banks = 1
	};

	static struct resource enp2611_flash_resource = {
	.start = 0xc4000000,
	.end = 0xc4000000 + 0x00ffffff,
	.flags = IORESOURCE_MEM,
	};

	static struct platform_device enp2611_flash = {
	.name = "IXP2000-Flash",
	.id = 0,
	.dev = {
	.platform_data = &enp2611_flash_data,
	},
	.num_resources = 1,
	.resource = &enp2611_flash_resource,
	};

	static struct ixp2000_i2c_pins enp2611_i2c_gpio_pins = {
	.sda_pin = ENP2611_GPIO_SDA,
	.scl_pin = ENP2611_GPIO_SCL,
	};

	static struct platform_device enp2611_i2c_controller = {
	.name = "IXP2000-I2C",
	.id = 0,
	.dev = {
	.platform_data = &enp2611_i2c_gpio_pins
	},
	.num_resources = 0
	};

	static struct platform_device *enp2611_devices[] __initdata = {
	&enp2611_flash,
	&enp2611_i2c_controller
	};

	static void __init enp2611_init_machine(void)
	{
	platform_add_devices(enp2611_devices, ARRAY_SIZE(enp2611_devices));
	ixp2000_uart_init();
	}


	MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board")
	/* Maintainer: Lennert Buytenhek <buytenh@wantstofly.org> */
	.atag_offset = 0x100,
	.map_io = enp2611_map_io,
	.init_irq = ixp2000_init_irq,
	.timer = &enp2611_timer,
	.init_machine = enp2611_init_machine,
	MACHINE_END