[net-next-2.6.git] / arch / arm / mach-ixp2000 / ixdp2x01.c

/*
 * arch/arm/mach-ixp2000/ixdp2x01.c
 *
 * Code common to Intel IXDP2401 and IXDP2801 platforms
 *
 * 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/slab.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/serial_8250.h>

#include <asm/io.h>
#include <asm/irq.h>
#include <asm/pgtable.h>
#include <asm/page.h>
#include <asm/system.h>
#include <asm/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>

/*************************************************************************
 * IXDP2x01 IRQ Handling
 *************************************************************************/
static void ixdp2x01_irq_mask(unsigned int irq)
{
	ixp2000_reg_wrb(IXDP2X01_INT_MASK_SET_REG,
				IXP2000_BOARD_IRQ_MASK(irq));
}

static void ixdp2x01_irq_unmask(unsigned int irq)
{
	ixp2000_reg_write(IXDP2X01_INT_MASK_CLR_REG,
				IXP2000_BOARD_IRQ_MASK(irq));
}

static u32 valid_irq_mask;

static void ixdp2x01_irq_handler(unsigned int irq, struct irq_desc *desc)
{
	u32 ex_interrupt;
	int i;

	desc->chip->mask(irq);

	ex_interrupt = *IXDP2X01_INT_STAT_REG & valid_irq_mask;

	if (!ex_interrupt) {
		printk(KERN_ERR "Spurious IXDP2X01 CPLD interrupt!\n");
		return;
	}

	for (i = 0; i < IXP2000_BOARD_IRQS; i++) {
		if (ex_interrupt & (1 << i)) {
			struct irq_desc *cpld_desc;
			int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
			cpld_desc = irq_desc + cpld_irq;
			desc_handle_irq(cpld_irq, cpld_desc);
		}
	}

	desc->chip->unmask(irq);
}

static struct irq_chip ixdp2x01_irq_chip = {
	.mask	= ixdp2x01_irq_mask,
	.ack	= ixdp2x01_irq_mask,
	.unmask	= ixdp2x01_irq_unmask
};

/*
 * We only do anything if we are the master NPU on the board.
 * The slave NPU only has the ethernet chip going directly to
 * the PCIB interrupt input.
 */
void __init ixdp2x01_init_irq(void)
{
	int irq = 0;

	/* initialize chip specific interrupts */
	ixp2000_init_irq();

	if (machine_is_ixdp2401())
		valid_irq_mask = IXDP2401_VALID_IRQ_MASK;
	else
		valid_irq_mask = IXDP2801_VALID_IRQ_MASK;

	/* Mask all interrupts from CPLD, disable simulation */
	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG, 0xffffffff);
	ixp2000_reg_wrb(IXDP2X01_INT_SIM_REG, 0);

	for (irq = NR_IXP2000_IRQS; irq < NR_IXDP2X01_IRQS; irq++) {
		if (irq & valid_irq_mask) {
			set_irq_chip(irq, &ixdp2x01_irq_chip);
			set_irq_handler(irq, handle_level_irq);
			set_irq_flags(irq, IRQF_VALID);
		} else {
			set_irq_flags(irq, 0);
		}
	}

	/* Hook into PCI interrupts */
	set_irq_chained_handler(IRQ_IXP2000_PCIB, ixdp2x01_irq_handler);
}


/*************************************************************************
 * IXDP2x01 memory map
 *************************************************************************/
static struct map_desc ixdp2x01_io_desc __initdata = {
	.virtual	= IXDP2X01_VIRT_CPLD_BASE, 
	.pfn		= __phys_to_pfn(IXDP2X01_PHYS_CPLD_BASE),
	.length		= IXDP2X01_CPLD_REGION_SIZE,
	.type		= MT_DEVICE
};

static void __init ixdp2x01_map_io(void)
{
	ixp2000_map_io();
	iotable_init(&ixdp2x01_io_desc, 1);
}


/*************************************************************************
 * IXDP2x01 serial ports
 *************************************************************************/
static struct plat_serial8250_port ixdp2x01_serial_port1[] = {
	{
		.mapbase	= (unsigned long)IXDP2X01_UART1_PHYS_BASE,
		.membase	= (char *)IXDP2X01_UART1_VIRT_BASE,
		.irq		= IRQ_IXDP2X01_UART1,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM32,
		.regshift	= 2,
		.uartclk	= IXDP2X01_UART_CLK,
	},
	{ }
};

static struct resource ixdp2x01_uart_resource1 = {
	.start		= IXDP2X01_UART1_PHYS_BASE,
	.end		= IXDP2X01_UART1_PHYS_BASE + 0xffff,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device ixdp2x01_serial_device1 = {
	.name		= "serial8250",
	.id		= PLAT8250_DEV_PLATFORM1,
	.dev		= {
		.platform_data		= ixdp2x01_serial_port1,
	},
	.num_resources	= 1,
	.resource	= &ixdp2x01_uart_resource1,
};

static struct plat_serial8250_port ixdp2x01_serial_port2[] = {
	{
		.mapbase	= (unsigned long)IXDP2X01_UART2_PHYS_BASE,
		.membase	= (char *)IXDP2X01_UART2_VIRT_BASE,
		.irq		= IRQ_IXDP2X01_UART2,
		.flags		= UPF_BOOT_AUTOCONF | UPF_SKIP_TEST,
		.iotype		= UPIO_MEM32,
		.regshift	= 2,
		.uartclk	= IXDP2X01_UART_CLK,
	}, 
	{ }
};

static struct resource ixdp2x01_uart_resource2 = {
	.start		= IXDP2X01_UART2_PHYS_BASE,
	.end		= IXDP2X01_UART2_PHYS_BASE + 0xffff,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device ixdp2x01_serial_device2 = {
	.name		= "serial8250",
	.id		= PLAT8250_DEV_PLATFORM2,
	.dev		= {
		.platform_data		= ixdp2x01_serial_port2,
	},
	.num_resources	= 1,
	.resource	= &ixdp2x01_uart_resource2,
};

static void ixdp2x01_uart_init(void)
{
	platform_device_register(&ixdp2x01_serial_device1);
	platform_device_register(&ixdp2x01_serial_device2);
}


/*************************************************************************
 * IXDP2x01 timer tick configuration
 *************************************************************************/
static unsigned int ixdp2x01_clock;

static int __init ixdp2x01_clock_setup(char *str)
{
	ixdp2x01_clock = simple_strtoul(str, NULL, 10);

	return 1;
}

__setup("ixdp2x01_clock=", ixdp2x01_clock_setup);

static void __init ixdp2x01_timer_init(void)
{
	if (!ixdp2x01_clock)
		ixdp2x01_clock = 50000000;

	ixp2000_init_time(ixdp2x01_clock);
}

static struct sys_timer ixdp2x01_timer = {
	.init		= ixdp2x01_timer_init,
	.offset		= ixp2000_gettimeoffset,
};

/*************************************************************************
 * IXDP2x01 PCI
 *************************************************************************/
void __init ixdp2x01_pci_preinit(void)
{
	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00000000);
	ixp2000_pci_preinit();
	pcibios_setup("firmware");
}

#define DEVPIN(dev, pin) ((pin) | ((dev) << 3))

static int __init ixdp2x01_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
	u8 bus = dev->bus->number;
	u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
	struct pci_bus *tmp_bus = dev->bus;

	/* Primary bus, no interrupts here */
	if (bus == 0) {
		return -1;
	}

	/* Lookup first leaf in bus tree */
	while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL)) {
		tmp_bus = tmp_bus->parent;
	}

	/* Select between known bridges */
	switch (tmp_bus->self->devfn | (tmp_bus->self->bus->number << 8)) {
	/* Device is located after first MB bridge */
	case 0x0008:
		if (tmp_bus == dev->bus) {
			/* Device is located directy after first MB bridge */
			switch (devpin) {
			case DEVPIN(1, 1):	/* Onboard 82546 ch 0 */
				if (machine_is_ixdp2401())
					return IRQ_IXDP2401_INTA_82546;
				return -1;
			case DEVPIN(1, 2):	/* Onboard 82546 ch 1 */
				if (machine_is_ixdp2401())
					return IRQ_IXDP2401_INTB_82546;
				return -1;
			case DEVPIN(0, 1):	/* PMC INTA# */
				return IRQ_IXDP2X01_SPCI_PMC_INTA;
			case DEVPIN(0, 2):	/* PMC INTB# */
				return IRQ_IXDP2X01_SPCI_PMC_INTB;
			case DEVPIN(0, 3):	/* PMC INTC# */
				return IRQ_IXDP2X01_SPCI_PMC_INTC;
			case DEVPIN(0, 4):	/* PMC INTD# */
				return IRQ_IXDP2X01_SPCI_PMC_INTD;
			}
		}
		break;
	case 0x0010:
		if (tmp_bus == dev->bus) {
			/* Device is located directy after second MB bridge */
			/* Secondary bus of second bridge */
			switch (devpin) {
			case DEVPIN(0, 1):	/* DB#0 */
				return IRQ_IXDP2X01_SPCI_DB_0;
			case DEVPIN(1, 1):	/* DB#1 */
				return IRQ_IXDP2X01_SPCI_DB_1;
			}
		} else {
			/* Device is located indirectly after second MB bridge */
			/* Not supported now */
		}
		break;
	}

	return -1;
}


static int ixdp2x01_pci_setup(int nr, struct pci_sys_data *sys)
{
	sys->mem_offset = 0xe0000000;

	if (machine_is_ixdp2801() || machine_is_ixdp28x5())
		sys->mem_offset -= ((*IXP2000_PCI_ADDR_EXT & 0xE000) << 16);

	return ixp2000_pci_setup(nr, sys);
}

struct hw_pci ixdp2x01_pci __initdata = {
	.nr_controllers	= 1,
	.setup		= ixdp2x01_pci_setup,
	.preinit	= ixdp2x01_pci_preinit,
	.scan		= ixp2000_pci_scan_bus,
	.map_irq	= ixdp2x01_pci_map_irq,
};

int __init ixdp2x01_pci_init(void)
{
	if (machine_is_ixdp2401() || machine_is_ixdp2801() ||\
		machine_is_ixdp28x5())
		pci_common_init(&ixdp2x01_pci);

	return 0;
}

subsys_initcall(ixdp2x01_pci_init);

/*************************************************************************
 * IXDP2x01 Machine Intialization
 *************************************************************************/
static struct flash_platform_data ixdp2x01_flash_platform_data = {
	.map_name	= "cfi_probe",
	.width		= 1,
};

static unsigned long ixdp2x01_flash_bank_setup(unsigned long ofs)
{
	ixp2000_reg_wrb(IXDP2X01_CPLD_FLASH_REG,
		((ofs >> IXDP2X01_FLASH_WINDOW_BITS) | IXDP2X01_CPLD_FLASH_INTERN));
	return (ofs & IXDP2X01_FLASH_WINDOW_MASK);
}

static struct ixp2000_flash_data ixdp2x01_flash_data = {
	.platform_data	= &ixdp2x01_flash_platform_data,
	.bank_setup	= ixdp2x01_flash_bank_setup
};

static struct resource ixdp2x01_flash_resource = {
	.start		= 0xc4000000,
	.end		= 0xc4000000 + 0x01ffffff,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device ixdp2x01_flash = {
	.name		= "IXP2000-Flash",
	.id		= 0,
	.dev		= {
		.platform_data = &ixdp2x01_flash_data,
	},
	.num_resources	= 1,
	.resource	= &ixdp2x01_flash_resource,
};

static struct ixp2000_i2c_pins ixdp2x01_i2c_gpio_pins = {
	.sda_pin	= IXDP2X01_GPIO_SDA,
	.scl_pin	= IXDP2X01_GPIO_SCL,
};

static struct platform_device ixdp2x01_i2c_controller = {
	.name		= "IXP2000-I2C",
	.id		= 0,
	.dev		= {
		.platform_data = &ixdp2x01_i2c_gpio_pins,
	},
	.num_resources	= 0
};

static struct platform_device *ixdp2x01_devices[] __initdata = {
	&ixdp2x01_flash,
	&ixdp2x01_i2c_controller
};

static void __init ixdp2x01_init_machine(void)
{
	ixp2000_reg_wrb(IXDP2X01_CPLD_FLASH_REG,
		(IXDP2X01_CPLD_FLASH_BANK_MASK | IXDP2X01_CPLD_FLASH_INTERN));
	
	ixdp2x01_flash_data.nr_banks =
		((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1);

	platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
	ixp2000_uart_init();
	ixdp2x01_uart_init();
}


#ifdef CONFIG_ARCH_IXDP2401
MACHINE_START(IXDP2401, "Intel IXDP2401 Development Platform")
	/* Maintainer: MontaVista Software, Inc. */
	.phys_io	= IXP2000_UART_PHYS_BASE,
	.io_pg_offst	= ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	.boot_params	= 0x00000100,
	.map_io		= ixdp2x01_map_io,
	.init_irq	= ixdp2x01_init_irq,
	.timer		= &ixdp2x01_timer,
	.init_machine	= ixdp2x01_init_machine,
MACHINE_END
#endif

#ifdef CONFIG_ARCH_IXDP2801
MACHINE_START(IXDP2801, "Intel IXDP2801 Development Platform")
	/* Maintainer: MontaVista Software, Inc. */
	.phys_io	= IXP2000_UART_PHYS_BASE,
	.io_pg_offst	= ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	.boot_params	= 0x00000100,
	.map_io		= ixdp2x01_map_io,
	.init_irq	= ixdp2x01_init_irq,
	.timer		= &ixdp2x01_timer,
	.init_machine	= ixdp2x01_init_machine,
MACHINE_END

/*
 * IXDP28x5 is basically an IXDP2801 with a different CPU but Intel
 * changed the machine ID in the bootloader
 */
MACHINE_START(IXDP28X5, "Intel IXDP2805/2855 Development Platform")
	/* Maintainer: MontaVista Software, Inc. */
	.phys_io	= IXP2000_UART_PHYS_BASE,
	.io_pg_offst	= ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	.boot_params	= 0x00000100,
	.map_io		= ixdp2x01_map_io,
	.init_irq	= ixdp2x01_init_irq,
	.timer		= &ixdp2x01_timer,
	.init_machine	= ixdp2x01_init_machine,
MACHINE_END
#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* arch/arm/mach-ixp2000/ixdp2x01.c
	3	*
	4	* Code common to Intel IXDP2401 and IXDP2801 platforms
	5	*
	6	* Original Author: Andrzej Mialkowski <andrzej.mialkowski@intel.com>
	7	* Maintainer: Deepak Saxena <dsaxena@plexity.net>
	8	*
	9	* Copyright (C) 2002-2003 Intel Corp.
	10	* Copyright (C) 2003-2004 MontaVista Software, Inc.
	11	*
	12	* This program is free software; you can redistribute it and/or modify it
	13	* under the terms of the GNU General Public License as published by the
	14	* Free Software Foundation; either version 2 of the License, or (at your
	15	* option) any later version.
	16	*/
	17
1da177e4 LT	18	#include <linux/kernel.h>
	19	#include <linux/init.h>
	20	#include <linux/mm.h>
	21	#include <linux/sched.h>
	22	#include <linux/interrupt.h>
	23	#include <linux/bitops.h>
	24	#include <linux/pci.h>
	25	#include <linux/ioport.h>
	26	#include <linux/slab.h>
	27	#include <linux/delay.h>
	28	#include <linux/serial.h>
	29	#include <linux/tty.h>
	30	#include <linux/serial_core.h>
d052d1be	31	#include <linux/platform_device.h>
104c7b03	32	#include <linux/serial_8250.h>
1da177e4 LT	33
	34	#include <asm/io.h>
	35	#include <asm/irq.h>
	36	#include <asm/pgtable.h>
	37	#include <asm/page.h>
	38	#include <asm/system.h>
	39	#include <asm/hardware.h>
	40	#include <asm/mach-types.h>
	41
	42	#include <asm/mach/pci.h>
	43	#include <asm/mach/map.h>
	44	#include <asm/mach/irq.h>
	45	#include <asm/mach/time.h>
	46	#include <asm/mach/arch.h>
	47	#include <asm/mach/flash.h>
	48
	49	/*************************************************************************
	50	* IXDP2x01 IRQ Handling
	51	*************************************************************************/
	52	static void ixdp2x01_irq_mask(unsigned int irq)
	53	{
e9b72e43	54	ixp2000_reg_wrb(IXDP2X01_INT_MASK_SET_REG,
1da177e4 LT	55	IXP2000_BOARD_IRQ_MASK(irq));
	56	}
	57
	58	static void ixdp2x01_irq_unmask(unsigned int irq)
	59	{
	60	ixp2000_reg_write(IXDP2X01_INT_MASK_CLR_REG,
	61	IXP2000_BOARD_IRQ_MASK(irq));
	62	}
	63
	64	static u32 valid_irq_mask;
	65
10dd5ce2	66	static void ixdp2x01_irq_handler(unsigned int irq, struct irq_desc *desc)
1da177e4 LT	67	{
	68	u32 ex_interrupt;
	69	int i;
	70
	71	desc->chip->mask(irq);
	72
	73	ex_interrupt = *IXDP2X01_INT_STAT_REG & valid_irq_mask;
	74
	75	if (!ex_interrupt) {
	76	printk(KERN_ERR "Spurious IXDP2X01 CPLD interrupt!\n");
	77	return;
	78	}
	79
	80	for (i = 0; i < IXP2000_BOARD_IRQS; i++) {
	81	if (ex_interrupt & (1 << i)) {
10dd5ce2	82	struct irq_desc *cpld_desc;
1da177e4 LT	83	int cpld_irq = IXP2000_BOARD_IRQ(0) + i;
1da177e4 LT	84	cpld_desc = irq_desc + cpld_irq;
0cd61b68	85	desc_handle_irq(cpld_irq, cpld_desc);
1da177e4 LT	86	}
	87	}
	88
	89	desc->chip->unmask(irq);
	90	}
	91
10dd5ce2	92	static struct irq_chip ixdp2x01_irq_chip = {
1da177e4 LT	93	.mask = ixdp2x01_irq_mask,
	94	.ack = ixdp2x01_irq_mask,
	95	.unmask = ixdp2x01_irq_unmask
	96	};
	97
	98	/*
	99	* We only do anything if we are the master NPU on the board.
	100	* The slave NPU only has the ethernet chip going directly to
	101	* the PCIB interrupt input.
	102	*/
	103	void __init ixdp2x01_init_irq(void)
	104	{
	105	int irq = 0;
	106
	107	/* initialize chip specific interrupts */
	108	ixp2000_init_irq();
	109
	110	if (machine_is_ixdp2401())
	111	valid_irq_mask = IXDP2401_VALID_IRQ_MASK;
	112	else
	113	valid_irq_mask = IXDP2801_VALID_IRQ_MASK;
	114
	115	/* Mask all interrupts from CPLD, disable simulation */
	116	ixp2000_reg_write(IXDP2X01_INT_MASK_SET_REG, 0xffffffff);
e9b72e43	117	ixp2000_reg_wrb(IXDP2X01_INT_SIM_REG, 0);
1da177e4 LT	118
	119	for (irq = NR_IXP2000_IRQS; irq < NR_IXDP2X01_IRQS; irq++) {
	120	if (irq & valid_irq_mask) {
	121	set_irq_chip(irq, &ixdp2x01_irq_chip);
10dd5ce2	122	set_irq_handler(irq, handle_level_irq);
1da177e4 LT	123	set_irq_flags(irq, IRQF_VALID);
	124	} else {
	125	set_irq_flags(irq, 0);
	126	}
	127	}
	128
	129	/* Hook into PCI interrupts */
64ffae8a	130	set_irq_chained_handler(IRQ_IXP2000_PCIB, ixdp2x01_irq_handler);
1da177e4 LT	131	}
	132
	133
	134	/*************************************************************************
104c7b03	135	* IXDP2x01 memory map
1da177e4 LT	136	*************************************************************************/
	137	static struct map_desc ixdp2x01_io_desc __initdata = {
	138	.virtual = IXDP2X01_VIRT_CPLD_BASE,
db0d087e	139	.pfn = __phys_to_pfn(IXDP2X01_PHYS_CPLD_BASE),
1da177e4 LT	140	.length = IXDP2X01_CPLD_REGION_SIZE,
	141	.type = MT_DEVICE
	142	};
	143
104c7b03 LB	144	static void __init ixdp2x01_map_io(void)
	145	{
	146	ixp2000_map_io();
	147	iotable_init(&ixdp2x01_io_desc, 1);
	148	}
	149
	150
	151	/*************************************************************************
	152	* IXDP2x01 serial ports
	153	*************************************************************************/
	154	static struct plat_serial8250_port ixdp2x01_serial_port1[] = {
1da177e4	155	{
1da177e4	156	.mapbase = (unsigned long)IXDP2X01_UART1_PHYS_BASE,
104c7b03	157	.membase = (char *)IXDP2X01_UART1_VIRT_BASE,
1da177e4	158	.irq = IRQ_IXDP2X01_UART1,
104c7b03	159	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST,
1da177e4 LT	160	.iotype = UPIO_MEM32,
	161	.regshift = 2,
	162	.uartclk = IXDP2X01_UART_CLK,
104c7b03 LB	163	},
	164	{ }
	165	};
	166
	167	static struct resource ixdp2x01_uart_resource1 = {
	168	.start = IXDP2X01_UART1_PHYS_BASE,
	169	.end = IXDP2X01_UART1_PHYS_BASE + 0xffff,
	170	.flags = IORESOURCE_MEM,
	171	};
	172
	173	static struct platform_device ixdp2x01_serial_device1 = {
	174	.name = "serial8250",
	175	.id = PLAT8250_DEV_PLATFORM1,
	176	.dev = {
	177	.platform_data = ixdp2x01_serial_port1,
	178	},
	179	.num_resources = 1,
	180	.resource = &ixdp2x01_uart_resource1,
	181	};
	182
	183	static struct plat_serial8250_port ixdp2x01_serial_port2[] = {
	184	{
1da177e4	185	.mapbase = (unsigned long)IXDP2X01_UART2_PHYS_BASE,
104c7b03	186	.membase = (char *)IXDP2X01_UART2_VIRT_BASE,
1da177e4	187	.irq = IRQ_IXDP2X01_UART2,
104c7b03	188	.flags = UPF_BOOT_AUTOCONF \| UPF_SKIP_TEST,
1da177e4 LT	189	.iotype = UPIO_MEM32,
	190	.regshift = 2,
	191	.uartclk = IXDP2X01_UART_CLK,
1da177e4	192	},
104c7b03	193	{ }
1da177e4 LT	194	};
1da177e4 LT	195
104c7b03 LB	196	static struct resource ixdp2x01_uart_resource2 = {
	197	.start = IXDP2X01_UART2_PHYS_BASE,
	198	.end = IXDP2X01_UART2_PHYS_BASE + 0xffff,
	199	.flags = IORESOURCE_MEM,
	200	};
1da177e4	201
104c7b03 LB	202	static struct platform_device ixdp2x01_serial_device2 = {
	203	.name = "serial8250",
	204	.id = PLAT8250_DEV_PLATFORM2,
	205	.dev = {
	206	.platform_data = ixdp2x01_serial_port2,
	207	},
	208	.num_resources = 1,
	209	.resource = &ixdp2x01_uart_resource2,
	210	};
1da177e4	211
104c7b03 LB	212	static void ixdp2x01_uart_init(void)
	213	{
	214	platform_device_register(&ixdp2x01_serial_device1);
	215	platform_device_register(&ixdp2x01_serial_device2);
1da177e4 LT	216	}
	217
	218
	219	/*************************************************************************
	220	* IXDP2x01 timer tick configuration
	221	*************************************************************************/
	222	static unsigned int ixdp2x01_clock;
	223
	224	static int __init ixdp2x01_clock_setup(char *str)
	225	{
	226	ixdp2x01_clock = simple_strtoul(str, NULL, 10);
	227
	228	return 1;
	229	}
	230
	231	__setup("ixdp2x01_clock=", ixdp2x01_clock_setup);
	232
	233	static void __init ixdp2x01_timer_init(void)
	234	{
	235	if (!ixdp2x01_clock)
	236	ixdp2x01_clock = 50000000;
	237
	238	ixp2000_init_time(ixdp2x01_clock);
	239	}
	240
	241	static struct sys_timer ixdp2x01_timer = {
	242	.init = ixdp2x01_timer_init,
	243	.offset = ixp2000_gettimeoffset,
	244	};
	245
	246	/*************************************************************************
	247	* IXDP2x01 PCI
	248	*************************************************************************/
	249	void __init ixdp2x01_pci_preinit(void)
	250	{
	251	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00000000);
	252	ixp2000_pci_preinit();
f8e5b284	253	pcibios_setup("firmware");
1da177e4 LT	254	}
	255
	256	#define DEVPIN(dev, pin) ((pin) \| ((dev) << 3))
	257
	258	static int __init ixdp2x01_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	259	{
	260	u8 bus = dev->bus->number;
	261	u32 devpin = DEVPIN(PCI_SLOT(dev->devfn), pin);
	262	struct pci_bus *tmp_bus = dev->bus;
	263
	264	/* Primary bus, no interrupts here */
	265	if (bus == 0) {
	266	return -1;
	267	}
	268
	269	/* Lookup first leaf in bus tree */
	270	while ((tmp_bus->parent != NULL) && (tmp_bus->parent->parent != NULL)) {
	271	tmp_bus = tmp_bus->parent;
	272	}
	273
	274	/* Select between known bridges */
	275	switch (tmp_bus->self->devfn \| (tmp_bus->self->bus->number << 8)) {
	276	/* Device is located after first MB bridge */
	277	case 0x0008:
	278	if (tmp_bus == dev->bus) {
	279	/* Device is located directy after first MB bridge */
	280	switch (devpin) {
	281	case DEVPIN(1, 1): /* Onboard 82546 ch 0 */
	282	if (machine_is_ixdp2401())
	283	return IRQ_IXDP2401_INTA_82546;
	284	return -1;
	285	case DEVPIN(1, 2): /* Onboard 82546 ch 1 */
	286	if (machine_is_ixdp2401())
	287	return IRQ_IXDP2401_INTB_82546;
	288	return -1;
	289	case DEVPIN(0, 1): /* PMC INTA# */
	290	return IRQ_IXDP2X01_SPCI_PMC_INTA;
	291	case DEVPIN(0, 2): /* PMC INTB# */
	292	return IRQ_IXDP2X01_SPCI_PMC_INTB;
	293	case DEVPIN(0, 3): /* PMC INTC# */
	294	return IRQ_IXDP2X01_SPCI_PMC_INTC;
	295	case DEVPIN(0, 4): /* PMC INTD# */
	296	return IRQ_IXDP2X01_SPCI_PMC_INTD;
	297	}
	298	}
	299	break;
	300	case 0x0010:
	301	if (tmp_bus == dev->bus) {
	302	/* Device is located directy after second MB bridge */
	303	/* Secondary bus of second bridge */
	304	switch (devpin) {
	305	case DEVPIN(0, 1): /* DB#0 */
	306	return IRQ_IXDP2X01_SPCI_DB_0;
	307	case DEVPIN(1, 1): /* DB#1 */
	308	return IRQ_IXDP2X01_SPCI_DB_1;
	309	}
	310	} else {
	311	/* Device is located indirectly after second MB bridge */
	312	/* Not supported now */
	313	}
	314	break;
	315	}
	316
	317	return -1;
318	}
319
320
321	static int ixdp2x01_pci_setup(int nr, struct pci_sys_data *sys)
322	{
323	sys->mem_offset = 0xe0000000;
324
0328ad23	325	if (machine_is_ixdp2801() \|\| machine_is_ixdp28x5())
1da177e4 LT	326	sys->mem_offset -= ((*IXP2000_PCI_ADDR_EXT & 0xE000) << 16);
	327
	328	return ixp2000_pci_setup(nr, sys);
	329	}
	330
	331	struct hw_pci ixdp2x01_pci __initdata = {
	332	.nr_controllers = 1,
	333	.setup = ixdp2x01_pci_setup,
	334	.preinit = ixdp2x01_pci_preinit,
	335	.scan = ixp2000_pci_scan_bus,
	336	.map_irq = ixdp2x01_pci_map_irq,
	337	};
	338
	339	int __init ixdp2x01_pci_init(void)
	340	{
0328ad23 DS	341	if (machine_is_ixdp2401() \|\| machine_is_ixdp2801() \|\|\
0328ad23 DS	342	machine_is_ixdp28x5())
1b394013 LB	343	pci_common_init(&ixdp2x01_pci);
1b394013 LB	344
1da177e4 LT	345	return 0;
	346	}
	347
	348	subsys_initcall(ixdp2x01_pci_init);
	349
	350	/*************************************************************************
	351	* IXDP2x01 Machine Intialization
	352	*************************************************************************/
	353	static struct flash_platform_data ixdp2x01_flash_platform_data = {
	354	.map_name = "cfi_probe",
	355	.width = 1,
	356	};
	357
	358	static unsigned long ixdp2x01_flash_bank_setup(unsigned long ofs)
	359	{
e9b72e43	360	ixp2000_reg_wrb(IXDP2X01_CPLD_FLASH_REG,
1da177e4 LT	361	((ofs >> IXDP2X01_FLASH_WINDOW_BITS) \| IXDP2X01_CPLD_FLASH_INTERN));
	362	return (ofs & IXDP2X01_FLASH_WINDOW_MASK);
	363	}
	364
	365	static struct ixp2000_flash_data ixdp2x01_flash_data = {
	366	.platform_data = &ixdp2x01_flash_platform_data,
	367	.bank_setup = ixdp2x01_flash_bank_setup
	368	};
	369
	370	static struct resource ixdp2x01_flash_resource = {
	371	.start = 0xc4000000,
	372	.end = 0xc4000000 + 0x01ffffff,
	373	.flags = IORESOURCE_MEM,
	374	};
	375
	376	static struct platform_device ixdp2x01_flash = {
	377	.name = "IXP2000-Flash",
	378	.id = 0,
	379	.dev = {
	380	.platform_data = &ixdp2x01_flash_data,
	381	},
	382	.num_resources = 1,
	383	.resource = &ixdp2x01_flash_resource,
	384	};
	385
	386	static struct ixp2000_i2c_pins ixdp2x01_i2c_gpio_pins = {
	387	.sda_pin = IXDP2X01_GPIO_SDA,
	388	.scl_pin = IXDP2X01_GPIO_SCL,
	389	};
	390
	391	static struct platform_device ixdp2x01_i2c_controller = {
	392	.name = "IXP2000-I2C",
	393	.id = 0,
	394	.dev = {
	395	.platform_data = &ixdp2x01_i2c_gpio_pins,
	396	},
	397	.num_resources = 0
	398	};
	399
	400	static struct platform_device *ixdp2x01_devices[] __initdata = {
	401	&ixdp2x01_flash,
	402	&ixdp2x01_i2c_controller
	403	};
	404
	405	static void __init ixdp2x01_init_machine(void)
	406	{
e9b72e43	407	ixp2000_reg_wrb(IXDP2X01_CPLD_FLASH_REG,
1da177e4 LT	408	(IXDP2X01_CPLD_FLASH_BANK_MASK \| IXDP2X01_CPLD_FLASH_INTERN));
	409
	410	ixdp2x01_flash_data.nr_banks =
	411	((*IXDP2X01_CPLD_FLASH_REG & IXDP2X01_CPLD_FLASH_BANK_MASK) + 1);
	412
	413	platform_add_devices(ixdp2x01_devices, ARRAY_SIZE(ixdp2x01_devices));
28187f2c	414	ixp2000_uart_init();
104c7b03	415	ixdp2x01_uart_init();
1da177e4 LT	416	}
	417
	418
	419	#ifdef CONFIG_ARCH_IXDP2401
	420	MACHINE_START(IXDP2401, "Intel IXDP2401 Development Platform")
e9dea0c6	421	/* Maintainer: MontaVista Software, Inc. */
e9dea0c6 RK	422	.phys_io = IXP2000_UART_PHYS_BASE,
	423	.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	424	.boot_params = 0x00000100,
	425	.map_io = ixdp2x01_map_io,
	426	.init_irq = ixdp2x01_init_irq,
1da177e4	427	.timer = &ixdp2x01_timer,
e9dea0c6	428	.init_machine = ixdp2x01_init_machine,
1da177e4 LT	429	MACHINE_END
	430	#endif
	431
	432	#ifdef CONFIG_ARCH_IXDP2801
	433	MACHINE_START(IXDP2801, "Intel IXDP2801 Development Platform")
e9dea0c6	434	/* Maintainer: MontaVista Software, Inc. */
e9dea0c6 RK	435	.phys_io = IXP2000_UART_PHYS_BASE,
	436	.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	437	.boot_params = 0x00000100,
	438	.map_io = ixdp2x01_map_io,
	439	.init_irq = ixdp2x01_init_irq,
1da177e4	440	.timer = &ixdp2x01_timer,
e9dea0c6	441	.init_machine = ixdp2x01_init_machine,
1da177e4	442	MACHINE_END
0328ad23 DS	443
	444	/*
	445	* IXDP28x5 is basically an IXDP2801 with a different CPU but Intel
	446	* changed the machine ID in the bootloader
	447	*/
	448	MACHINE_START(IXDP28X5, "Intel IXDP2805/2855 Development Platform")
	449	/* Maintainer: MontaVista Software, Inc. */
	450	.phys_io = IXP2000_UART_PHYS_BASE,
	451	.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	452	.boot_params = 0x00000100,
	453	.map_io = ixdp2x01_map_io,
	454	.init_irq = ixdp2x01_init_irq,
	455	.timer = &ixdp2x01_timer,
	456	.init_machine = ixdp2x01_init_machine,
	457	MACHINE_END
1da177e4 LT	458	#endif
	459
	460