[mirror_ubuntu-zesty-kernel.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/config.h>
#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.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 <asm/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/irq.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(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 roadrunner_pci_preinit(void)
{
	set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQT_LOW);
	set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQT_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 void __init roadrunner_init(void)
{
	physmap_configure(0x90000000, 0x04000000, 2, NULL);

	/*
	 * 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 */
	.phys_io	= IXP23XX_PERIPHERAL_PHYS,
	.io_pg_offst	= ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
	.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
	17	#include <linux/config.h>
	18	#include <linux/kernel.h>
	19	#include <linux/init.h>
	20	#include <linux/spinlock.h>
	21	#include <linux/sched.h>
	22	#include <linux/interrupt.h>
	23	#include <linux/serial.h>
	24	#include <linux/tty.h>
	25	#include <linux/bitops.h>
	26	#include <linux/ioport.h>
	27	#include <linux/serial.h>
	28	#include <linux/serial_8250.h>
	29	#include <linux/serial_core.h>
	30	#include <linux/device.h>
	31	#include <linux/mm.h>
	32	#include <linux/pci.h>
	33	#include <linux/mtd/physmap.h>
	34
	35	#include <asm/types.h>
	36	#include <asm/setup.h>
	37	#include <asm/memory.h>
	38	#include <asm/hardware.h>
	39	#include <asm/mach-types.h>
	40	#include <asm/irq.h>
	41	#include <asm/system.h>
	42	#include <asm/tlbflush.h>
	43	#include <asm/pgtable.h>
	44
	45	#include <asm/mach/map.h>
	46	#include <asm/mach/irq.h>
	47	#include <asm/mach/arch.h>
	48	#include <asm/mach/irq.h>
	49	#include <asm/mach/pci.h>
	50
	51	/*
	52	* Interrupt mapping
	53	*/
	54	#define INTA IRQ_ROADRUNNER_PCI_INTA
	55	#define INTB IRQ_ROADRUNNER_PCI_INTB
	56	#define INTC IRQ_ROADRUNNER_PCI_INTC
	57	#define INTD IRQ_ROADRUNNER_PCI_INTD
	58
	59	#define INTC_PIN IXP23XX_GPIO_PIN_11
	60	#define INTD_PIN IXP23XX_GPIO_PIN_12
	61
	62	static int __init roadrunner_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
	63	{
	64	static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
65	static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
66	static int usb_irq[] = {INTB, INTC, INTD, -1};
67	static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
68	static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};
69
70	switch(dev->bus->number) {
71	case 0:
72	switch(dev->devfn) {
73	case 0x0: // PCI-PCI bridge
74	break;
75	case 0x8: // PCI Card Slot
76	return pci_card_slot_irq[pin - 1];
77	case 0x10: // PMC Slot
78	return pmc_card_slot_irq[pin - 1];
79	case 0x18: // PMC Slot Secondary Agent
80	break;
81	case 0x20: // IXP Processor
82	break;
83	default:
84	return NO_IRQ;
85	}
86	break;
87
88	case 1:
89	switch(dev->devfn) {
90	case 0x0: // IDE Controller
91	return (pin == 1) ? INTC : -1;
92	case 0x8: // USB fun 0
93	case 0x9: // USB fun 1
94	case 0xa: // USB fun 2
95	return usb_irq[pin - 1];
96	case 0x10: // Mini PCI 1
97	return mini_pci_1_irq[pin-1];
98	case 0x18: // Mini PCI 2
99	return mini_pci_2_irq[pin-1];
100	case 0x20: // MEM slot
101	return (pin == 1) ? INTA : -1;
102	default:
103	return NO_IRQ;
104	}
105	break;
106
107	default:
108	return NO_IRQ;
109	}
110
111	return NO_IRQ;
112	}
113
114	static void roadrunner_pci_preinit(void)
115	{
116	set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQT_LOW);
117	set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQT_LOW);
118
119	ixp23xx_pci_preinit();
120	}
121
122	static struct hw_pci roadrunner_pci __initdata = {
123	.nr_controllers = 1,
124	.preinit = roadrunner_pci_preinit,
125	.setup = ixp23xx_pci_setup,
126	.scan = ixp23xx_pci_scan_bus,
127	.map_irq = roadrunner_map_irq,
128	};
129
130	static int __init roadrunner_pci_init(void)
131	{
132	if (machine_is_roadrunner())
133	pci_common_init(&roadrunner_pci);
134
135	return 0;
136	};
137
138	subsys_initcall(roadrunner_pci_init);
139
140	static void __init roadrunner_init(void)
141	{
142	physmap_configure(0x90000000, 0x04000000, 2, NULL);
143
144	/*
145	* Mark flash as writeable
146	*/
147	IXP23XX_EXP_CS0[0] \|= IXP23XX_FLASH_WRITABLE;
148	IXP23XX_EXP_CS0[1] \|= IXP23XX_FLASH_WRITABLE;
149	IXP23XX_EXP_CS0[2] \|= IXP23XX_FLASH_WRITABLE;
150	IXP23XX_EXP_CS0[3] \|= IXP23XX_FLASH_WRITABLE;
151
152	ixp23xx_sys_init();
153	}
154
155	MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
156	/* Maintainer: Deepak Saxena */
157	.phys_io = IXP23XX_PERIPHERAL_PHYS,
158	.io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
159	.map_io = ixp23xx_map_io,
160	.init_irq = ixp23xx_init_irq,
161	.timer = &ixp23xx_timer,
162	.boot_params = 0x00000100,
163	.init_machine = roadrunner_init,
164	MACHINE_END