summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-ixp23xx/roadrunner.c
blob: 8c0e5de3c609c70889985c730c66566db1607053 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
/*
 * 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/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,
	.ops		= &ixp23xx_pci_ops,
	.preinit	= roadrunner_pci_preinit,
	.setup		= ixp23xx_pci_setup,
	.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,
	.atag_offset	= 0x100,
	.init_machine	= roadrunner_init,
	.restart	= ixp23xx_restart,
MACHINE_END