[deliverable/linux.git] / arch / arm / mach-ixp2000 / ixdp2400.c

/*
 * arch/arm/mach-ixp2000/ixdp2400.c
 *
 * IXDP2400 platform support
 *
 * Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
 * Maintainer: Deepak Saxena <dsaxena@plexity.net>
 *
 * Copyright (C) 2002 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/device.h>
#include <linux/bitops.h>
#include <linux/pci.h>
#include <linux/ioport.h>
#include <linux/slab.h>
#include <linux/delay.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/flash.h>
#include <asm/mach/arch.h>

/*************************************************************************
 * IXDP2400 timer tick
 *************************************************************************/
static void __init ixdp2400_timer_init(void)
{
	int numerator, denominator;
	int denom_array[] = {2, 4, 8, 16, 1, 2, 4, 8};

	numerator = (*(IXDP2400_CPLD_SYS_CLK_M) & 0xFF) *2;
	denominator = denom_array[(*(IXDP2400_CPLD_SYS_CLK_N) & 0x7)];

	ixp2000_init_time(((3125000 * numerator) / (denominator)) / 2);
}

static struct sys_timer ixdp2400_timer = {
	.init		= ixdp2400_timer_init,
	.offset		= ixp2000_gettimeoffset,
};

/*************************************************************************
 * IXDP2400 PCI
 *************************************************************************/
void __init ixdp2400_pci_preinit(void)
{
	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
	ixp2000_pci_preinit();
	pcibios_setup("firmware");
}

int ixdp2400_pci_setup(int nr, struct pci_sys_data *sys)
{
	sys->mem_offset = 0xe0000000;

	ixp2000_pci_setup(nr, sys);

	return 1;
}

static int __init ixdp2400_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
{
	if (ixdp2x00_master_npu()) {

		/*
		 * Root bus devices.  Slave NPU is only one with interrupt.
		 * Everything else, we just return -1 b/c nothing else
		 * on the root bus has interrupts.
		 */
		if(!dev->bus->self) {
			if(dev->devfn == IXDP2X00_SLAVE_NPU_DEVFN )
				return IRQ_IXDP2400_INGRESS_NPU;

			return -1;
		}

		/*
		 * Bridge behind the PMC slot.
		 * NOTE: Only INTA from the PMC slot is routed. VERY BAD.
		 */
		if(dev->bus->self->devfn == IXDP2X00_PMC_DEVFN &&
			dev->bus->parent->self->devfn == IXDP2X00_P2P_DEVFN &&
			!dev->bus->parent->self->bus->parent)
				  return IRQ_IXDP2400_PMC;

		/*
		 * Device behind the first bridge
		 */
		if(dev->bus->self->devfn == IXDP2X00_P2P_DEVFN) {
			switch(dev->devfn) {
				case IXDP2400_MASTER_ENET_DEVFN:	
					return IRQ_IXDP2400_ENET;	
			
				case IXDP2400_MEDIA_DEVFN:
					return IRQ_IXDP2400_MEDIA_PCI;

				case IXDP2400_SWITCH_FABRIC_DEVFN:
					return IRQ_IXDP2400_SF_PCI;

				case IXDP2X00_PMC_DEVFN:
					return IRQ_IXDP2400_PMC;
			}
		}

		return -1;
	} else return IRQ_IXP2000_PCIB; /* Slave NIC interrupt */
}


static void ixdp2400_pci_postinit(void)
{
	struct pci_dev *dev;

	if (ixdp2x00_master_npu()) {
		dev = pci_get_bus_and_slot(1, IXDP2400_SLAVE_ENET_DEVFN);
		pci_remove_bus_device(dev);
		pci_dev_put(dev)
	} else {
		dev = pci_get_bus_and_slot(1, IXDP2400_MASTER_ENET_DEVFN);
		pci_remove_bus_device(dev);
		pci_dev_put(dev)

		ixdp2x00_slave_pci_postinit();
	}
}

static struct hw_pci ixdp2400_pci __initdata = {
	.nr_controllers	= 1,
	.setup		= ixdp2400_pci_setup,
	.preinit	= ixdp2400_pci_preinit,
	.postinit	= ixdp2400_pci_postinit,
	.scan		= ixp2000_pci_scan_bus,
	.map_irq	= ixdp2400_pci_map_irq,
};

int __init ixdp2400_pci_init(void)
{
	if (machine_is_ixdp2400())
		pci_common_init(&ixdp2400_pci);

	return 0;
}

subsys_initcall(ixdp2400_pci_init);

void ixdp2400_init_irq(void)
{
	ixdp2x00_init_irq(IXDP2400_CPLD_INT_STAT, IXDP2400_CPLD_INT_MASK, IXDP2400_NR_IRQS);
}

MACHINE_START(IXDP2400, "Intel IXDP2400 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		= ixdp2x00_map_io,
	.init_irq	= ixdp2400_init_irq,
	.timer		= &ixdp2400_timer,
	.init_machine	= ixdp2x00_init_machine,
MACHINE_END
Commit	Line	Data
1da177e4 LT	1	/*
	2	* arch/arm/mach-ixp2000/ixdp2400.c
	3	*
	4	* IXDP2400 platform support
	5	*
	6	* Original Author: Naeem Afzal <naeem.m.afzal@intel.com>
	7	* Maintainer: Deepak Saxena <dsaxena@plexity.net>
	8	*
	9	* Copyright (C) 2002 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	*/
1da177e4 LT	17	#include <linux/kernel.h>
	18	#include <linux/init.h>
	19	#include <linux/mm.h>
	20	#include <linux/sched.h>
	21	#include <linux/interrupt.h>
	22	#include <linux/device.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
	29	#include <asm/io.h>
	30	#include <asm/irq.h>
	31	#include <asm/pgtable.h>
	32	#include <asm/page.h>
	33	#include <asm/system.h>
	34	#include <asm/hardware.h>
	35	#include <asm/mach-types.h>
	36
	37	#include <asm/mach/pci.h>
	38	#include <asm/mach/map.h>
	39	#include <asm/mach/irq.h>
	40	#include <asm/mach/time.h>
	41	#include <asm/mach/flash.h>
	42	#include <asm/mach/arch.h>
	43
	44	/*************************************************************************
	45	* IXDP2400 timer tick
	46	*************************************************************************/
	47	static void __init ixdp2400_timer_init(void)
	48	{
	49	int numerator, denominator;
	50	int denom_array[] = {2, 4, 8, 16, 1, 2, 4, 8};
	51
	52	numerator = ((IXDP2400_CPLD_SYS_CLK_M) & 0xFF) 2;
	53	denominator = denom_array[(*(IXDP2400_CPLD_SYS_CLK_N) & 0x7)];
	54
	55	ixp2000_init_time(((3125000 * numerator) / (denominator)) / 2);
	56	}
	57
	58	static struct sys_timer ixdp2400_timer = {
	59	.init = ixdp2400_timer_init,
	60	.offset = ixp2000_gettimeoffset,
	61	};
	62
	63	/*************************************************************************
	64	* IXDP2400 PCI
	65	*************************************************************************/
	66	void __init ixdp2400_pci_preinit(void)
	67	{
	68	ixp2000_reg_write(IXP2000_PCI_ADDR_EXT, 0x00100000);
	69	ixp2000_pci_preinit();
f8e5b284	70	pcibios_setup("firmware");
1da177e4 LT	71	}
	72
	73	int ixdp2400_pci_setup(int nr, struct pci_sys_data *sys)
	74	{
	75	sys->mem_offset = 0xe0000000;
	76
	77	ixp2000_pci_setup(nr, sys);
	78
	79	return 1;
	80	}
	81
	82	static int __init ixdp2400_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
	83	{
	84	if (ixdp2x00_master_npu()) {
	85
	86	/*
	87	* Root bus devices. Slave NPU is only one with interrupt.
	88	* Everything else, we just return -1 b/c nothing else
	89	* on the root bus has interrupts.
	90	*/
	91	if(!dev->bus->self) {
	92	if(dev->devfn == IXDP2X00_SLAVE_NPU_DEVFN )
	93	return IRQ_IXDP2400_INGRESS_NPU;
	94
	95	return -1;
	96	}
	97
	98	/*
	99	* Bridge behind the PMC slot.
	100	* NOTE: Only INTA from the PMC slot is routed. VERY BAD.
	101	*/
	102	if(dev->bus->self->devfn == IXDP2X00_PMC_DEVFN &&
	103	dev->bus->parent->self->devfn == IXDP2X00_P2P_DEVFN &&
	104	!dev->bus->parent->self->bus->parent)
	105	return IRQ_IXDP2400_PMC;
	106
	107	/*
	108	* Device behind the first bridge
	109	*/
	110	if(dev->bus->self->devfn == IXDP2X00_P2P_DEVFN) {
	111	switch(dev->devfn) {
	112	case IXDP2400_MASTER_ENET_DEVFN:
	113	return IRQ_IXDP2400_ENET;
	114
	115	case IXDP2400_MEDIA_DEVFN:
	116	return IRQ_IXDP2400_MEDIA_PCI;
	117
	118	case IXDP2400_SWITCH_FABRIC_DEVFN:
	119	return IRQ_IXDP2400_SF_PCI;
	120
	121	case IXDP2X00_PMC_DEVFN:
	122	return IRQ_IXDP2400_PMC;
	123	}
	124	}
	125
	126	return -1;
	127	} else return IRQ_IXP2000_PCIB; /* Slave NIC interrupt */
	128	}
	129
	130
	131	static void ixdp2400_pci_postinit(void)
	132	{
	133	struct pci_dev *dev;
	134
135	if (ixdp2x00_master_npu()) {
7281c248	136	dev = pci_get_bus_and_slot(1, IXDP2400_SLAVE_ENET_DEVFN);
1da177e4	137	pci_remove_bus_device(dev);
7281c248	138	pci_dev_put(dev)
1da177e4	139	} else {
7281c248	140	dev = pci_get_bus_and_slot(1, IXDP2400_MASTER_ENET_DEVFN);
1da177e4	141	pci_remove_bus_device(dev);
7281c248	142	pci_dev_put(dev)
1da177e4 LT	143
	144	ixdp2x00_slave_pci_postinit();
	145	}
	146	}
	147
	148	static struct hw_pci ixdp2400_pci __initdata = {
	149	.nr_controllers = 1,
	150	.setup = ixdp2400_pci_setup,
	151	.preinit = ixdp2400_pci_preinit,
	152	.postinit = ixdp2400_pci_postinit,
	153	.scan = ixp2000_pci_scan_bus,
	154	.map_irq = ixdp2400_pci_map_irq,
	155	};
	156
	157	int __init ixdp2400_pci_init(void)
	158	{
	159	if (machine_is_ixdp2400())
	160	pci_common_init(&ixdp2400_pci);
	161
	162	return 0;
	163	}
	164
	165	subsys_initcall(ixdp2400_pci_init);
	166
	167	void ixdp2400_init_irq(void)
	168	{
	169	ixdp2x00_init_irq(IXDP2400_CPLD_INT_STAT, IXDP2400_CPLD_INT_MASK, IXDP2400_NR_IRQS);
	170	}
	171
	172	MACHINE_START(IXDP2400, "Intel IXDP2400 Development Platform")
e9dea0c6	173	/* Maintainer: MontaVista Software, Inc. */
e9dea0c6 RK	174	.phys_io = IXP2000_UART_PHYS_BASE,
	175	.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
	176	.boot_params = 0x00000100,
	177	.map_io = ixdp2x00_map_io,
	178	.init_irq = ixdp2400_init_irq,
1da177e4	179	.timer = &ixdp2400_timer,
e9dea0c6	180	.init_machine = ixdp2x00_init_machine,
1da177e4 LT	181	MACHINE_END
1da177e4 LT	182