[deliverable/linux.git] / arch / arm / mach-ixp23xx / roadrunner.c

/*
 * arch/arm/mach-ixp23xx/roadrunner.c
 *
 * RoadRunner board-specific routines
 *
 * Author: Deepak Saxena <dsaxena@plexity.net>
 *
 * Copyright 2005 (c) MontaVista Software, Inc.
 *
 * Based on 2.4 code Copyright 2005 (c) ADI Engineering Corporation
 *
 * This file is licensed under the terms of the GNU General Public
 * License version 2. This program is licensed "as is" without any
 * warranty of any kind, whether express or implied.
 */

#include <linux/kernel.h>
#include <linux/init.h>
#include <linux/spinlock.h>
#include <linux/sched.h>
#include <linux/interrupt.h>
#include <linux/serial.h>
#include <linux/tty.h>
#include <linux/bitops.h>
#include <linux/ioport.h>
#include <linux/serial_8250.h>
#include <linux/serial_core.h>
#include <linux/device.h>
#include <linux/mm.h>
#include <linux/pci.h>
#include <linux/mtd/physmap.h>

#include <asm/types.h>
#include <asm/setup.h>
#include <asm/memory.h>
#include <mach/hardware.h>
#include <asm/mach-types.h>
#include <asm/irq.h>
#include <asm/system.h>
#include <asm/tlbflush.h>
#include <asm/pgtable.h>

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

/*
 * Interrupt mapping
 */
#define INTA		IRQ_ROADRUNNER_PCI_INTA
#define INTB		IRQ_ROADRUNNER_PCI_INTB
#define INTC		IRQ_ROADRUNNER_PCI_INTC
#define INTD		IRQ_ROADRUNNER_PCI_INTD

#define INTC_PIN	IXP23XX_GPIO_PIN_11
#define INTD_PIN	IXP23XX_GPIO_PIN_12

static int __init roadrunner_map_irq(const struct pci_dev *dev, u8 idsel,
	u8 pin)
{
	static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
	static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
	static int usb_irq[] = {INTB, INTC, INTD, -1};
	static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
	static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};

	switch(dev->bus->number) {
		case 0:
			switch(dev->devfn) {
			case 0x0: // PCI-PCI bridge
				break;
			case 0x8: // PCI Card Slot
				return pci_card_slot_irq[pin - 1];
			case 0x10: // PMC Slot
				return pmc_card_slot_irq[pin - 1];
			case 0x18: // PMC Slot Secondary Agent
				break;
			case 0x20: // IXP Processor
				break;
			default:
				return NO_IRQ;
			}
			break;

		case 1:
			switch(dev->devfn) {
			case 0x0: // IDE Controller
				return (pin == 1) ? INTC : -1;
			case 0x8: // USB fun 0
			case 0x9: // USB fun 1
			case 0xa: // USB fun 2
				return usb_irq[pin - 1];
			case 0x10: // Mini PCI 1
				return mini_pci_1_irq[pin-1];
			case 0x18: // Mini PCI 2
				return mini_pci_2_irq[pin-1];
			case 0x20: // MEM slot
				return (pin == 1) ? INTA : -1;
			default:
				return NO_IRQ;
			}
			break;

		default:
			return NO_IRQ;
	}

	return NO_IRQ;
}

static void __init roadrunner_pci_preinit(void)
{
	irq_set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQ_TYPE_LEVEL_LOW);
	irq_set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQ_TYPE_LEVEL_LOW);

	ixp23xx_pci_preinit();
}

static struct hw_pci roadrunner_pci __initdata = {
	.nr_controllers	= 1,
	.preinit	= roadrunner_pci_preinit,
	.setup		= ixp23xx_pci_setup,
	.scan		= ixp23xx_pci_scan_bus,
	.map_irq	= roadrunner_map_irq,
};

static int __init roadrunner_pci_init(void)
{
	if (machine_is_roadrunner())
		pci_common_init(&roadrunner_pci);

	return 0;
};

subsys_initcall(roadrunner_pci_init);

static struct physmap_flash_data roadrunner_flash_data = {
	.width		= 2,
};

static struct resource roadrunner_flash_resource = {
	.start		= 0x90000000,
	.end		= 0x93ffffff,
	.flags		= IORESOURCE_MEM,
};

static struct platform_device roadrunner_flash = {
	.name		= "physmap-flash",
	.id		= 0,
	.dev		= {
		.platform_data	= &roadrunner_flash_data,
	},
	.num_resources	= 1,
	.resource	= &roadrunner_flash_resource,
};

static void __init roadrunner_init(void)
{
	platform_device_register(&roadrunner_flash);

	/*
	 * Mark flash as writeable
	 */
	IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
	IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
	IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
	IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;

	ixp23xx_sys_init();
}

MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
	/* Maintainer: Deepak Saxena */
	.map_io		= ixp23xx_map_io,
	.init_irq	= ixp23xx_init_irq,
	.timer		= &ixp23xx_timer,
	.boot_params	= 0x00000100,
	.init_machine	= roadrunner_init,
MACHINE_END
Commit	Line	Data
c4713074 LB	1	/*
	2	* arch/arm/mach-ixp23xx/roadrunner.c
	3	*
	4	* RoadRunner board-specific routines
	5	*
	6	* Author: Deepak Saxena <dsaxena@plexity.net>
	7	*
	8	* Copyright 2005 (c) MontaVista Software, Inc.
	9	*
	10	* Based on 2.4 code Copyright 2005 (c) ADI Engineering Corporation
	11	*
	12	* This file is licensed under the terms of the GNU General Public
	13	* License version 2. This program is licensed "as is" without any
	14	* warranty of any kind, whether express or implied.
	15	*/
	16
c4713074 LB	17	#include <linux/kernel.h>
	18	#include <linux/init.h>
	19	#include <linux/spinlock.h>
	20	#include <linux/sched.h>
	21	#include <linux/interrupt.h>
	22	#include <linux/serial.h>
	23	#include <linux/tty.h>
	24	#include <linux/bitops.h>
	25	#include <linux/ioport.h>
c4713074 LB	26	#include <linux/serial_8250.h>
	27	#include <linux/serial_core.h>
	28	#include <linux/device.h>
	29	#include <linux/mm.h>
	30	#include <linux/pci.h>
	31	#include <linux/mtd/physmap.h>
	32
	33	#include <asm/types.h>
	34	#include <asm/setup.h>
	35	#include <asm/memory.h>
a09e64fb	36	#include <mach/hardware.h>
c4713074 LB	37	#include <asm/mach-types.h>
	38	#include <asm/irq.h>
	39	#include <asm/system.h>
	40	#include <asm/tlbflush.h>
	41	#include <asm/pgtable.h>
	42
	43	#include <asm/mach/map.h>
	44	#include <asm/mach/irq.h>
	45	#include <asm/mach/arch.h>
c4713074 LB	46	#include <asm/mach/pci.h>
	47
	48	/*
	49	* Interrupt mapping
	50	*/
	51	#define INTA IRQ_ROADRUNNER_PCI_INTA
	52	#define INTB IRQ_ROADRUNNER_PCI_INTB
	53	#define INTC IRQ_ROADRUNNER_PCI_INTC
	54	#define INTD IRQ_ROADRUNNER_PCI_INTD
	55
	56	#define INTC_PIN IXP23XX_GPIO_PIN_11
	57	#define INTD_PIN IXP23XX_GPIO_PIN_12
	58
d5341942 RB	59	static int __init roadrunner_map_irq(const struct pci_dev *dev, u8 idsel,
d5341942 RB	60	u8 pin)
c4713074 LB	61	{
	62	static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
	63	static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
	64	static int usb_irq[] = {INTB, INTC, INTD, -1};
	65	static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
	66	static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};
	67
	68	switch(dev->bus->number) {
	69	case 0:
	70	switch(dev->devfn) {
	71	case 0x0: // PCI-PCI bridge
	72	break;
	73	case 0x8: // PCI Card Slot
	74	return pci_card_slot_irq[pin - 1];
	75	case 0x10: // PMC Slot
	76	return pmc_card_slot_irq[pin - 1];
	77	case 0x18: // PMC Slot Secondary Agent
	78	break;
	79	case 0x20: // IXP Processor
	80	break;
	81	default:
	82	return NO_IRQ;
	83	}
	84	break;
	85
	86	case 1:
	87	switch(dev->devfn) {
	88	case 0x0: // IDE Controller
	89	return (pin == 1) ? INTC : -1;
	90	case 0x8: // USB fun 0
	91	case 0x9: // USB fun 1
	92	case 0xa: // USB fun 2
	93	return usb_irq[pin - 1];
	94	case 0x10: // Mini PCI 1
	95	return mini_pci_1_irq[pin-1];
	96	case 0x18: // Mini PCI 2
	97	return mini_pci_2_irq[pin-1];
	98	case 0x20: // MEM slot
	99	return (pin == 1) ? INTA : -1;
	100	default:
	101	return NO_IRQ;
	102	}
	103	break;
	104
	105	default:
	106	return NO_IRQ;
	107	}
	108
	109	return NO_IRQ;
	110	}
	111
cdea4606	112	static void __init roadrunner_pci_preinit(void)
c4713074	113	{
6845664a TG	114	irq_set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQ_TYPE_LEVEL_LOW);
6845664a TG	115	irq_set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQ_TYPE_LEVEL_LOW);
c4713074 LB	116
	117	ixp23xx_pci_preinit();
	118	}
	119
	120	static struct hw_pci roadrunner_pci __initdata = {
	121	.nr_controllers = 1,
	122	.preinit = roadrunner_pci_preinit,
	123	.setup = ixp23xx_pci_setup,
	124	.scan = ixp23xx_pci_scan_bus,
	125	.map_irq = roadrunner_map_irq,
	126	};
	127
	128	static int __init roadrunner_pci_init(void)
	129	{
	130	if (machine_is_roadrunner())
	131	pci_common_init(&roadrunner_pci);
	132
	133	return 0;
	134	};
	135
	136	subsys_initcall(roadrunner_pci_init);
	137
84b61f6d LB	138	static struct physmap_flash_data roadrunner_flash_data = {
	139	.width = 2,
	140	};
	141
	142	static struct resource roadrunner_flash_resource = {
	143	.start = 0x90000000,
562ca1e3	144	.end = 0x93ffffff,
84b61f6d LB	145	.flags = IORESOURCE_MEM,
	146	};
	147
	148	static struct platform_device roadrunner_flash = {
	149	.name = "physmap-flash",
	150	.id = 0,
	151	.dev = {
	152	.platform_data = &roadrunner_flash_data,
	153	},
	154	.num_resources = 1,
	155	.resource = &roadrunner_flash_resource,
	156	};
	157
c4713074 LB	158	static void __init roadrunner_init(void)
c4713074 LB	159	{
84b61f6d	160	platform_device_register(&roadrunner_flash);
c4713074 LB	161
	162	/*
	163	* Mark flash as writeable
	164	*/
	165	IXP23XX_EXP_CS0[0] \|= IXP23XX_FLASH_WRITABLE;
	166	IXP23XX_EXP_CS0[1] \|= IXP23XX_FLASH_WRITABLE;
	167	IXP23XX_EXP_CS0[2] \|= IXP23XX_FLASH_WRITABLE;
	168	IXP23XX_EXP_CS0[3] \|= IXP23XX_FLASH_WRITABLE;
	169
	170	ixp23xx_sys_init();
	171	}
	172
	173	MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
	174	/* Maintainer: Deepak Saxena */
c4713074 LB	175	.map_io = ixp23xx_map_io,
	176	.init_irq = ixp23xx_init_irq,
	177	.timer = &ixp23xx_timer,
	178	.boot_params = 0x00000100,
	179	.init_machine = roadrunner_init,
	180	MACHINE_END