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gerrit-public.fairphone.software / kernel / msm / cdea460643072e1ee3647434aa254b5b81364f68 / . / arch / arm / mach-ixp23xx / roadrunner.c
blob: e35644961aa442d9766a168088bee79713bd3151 [file] [log] [blame]
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100[diff] [blame]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
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100[diff] [blame]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>
26#include <linux/serial.h>
27#include <linux/serial_8250.h>
28#include <linux/serial_core.h>
29#include <linux/device.h>
30#include <linux/mm.h>
31#include <linux/pci.h>
32#include <linux/mtd/physmap.h>
33
34#include <asm/types.h>
35#include <asm/setup.h>
36#include <asm/memory.h>
37#include <asm/hardware.h>
38#include <asm/mach-types.h>
39#include <asm/irq.h>
40#include <asm/system.h>
41#include <asm/tlbflush.h>
42#include <asm/pgtable.h>
43
44#include <asm/mach/map.h>
45#include <asm/mach/irq.h>
46#include <asm/mach/arch.h>
47#include <asm/mach/irq.h>
48#include <asm/mach/pci.h>
49
50/*
51 * Interrupt mapping
52 */
53#define INTA IRQ_ROADRUNNER_PCI_INTA
54#define INTB IRQ_ROADRUNNER_PCI_INTB
55#define INTC IRQ_ROADRUNNER_PCI_INTC
56#define INTD IRQ_ROADRUNNER_PCI_INTD
57
58#define INTC_PIN IXP23XX_GPIO_PIN_11
59#define INTD_PIN IXP23XX_GPIO_PIN_12
60
61static int __init roadrunner_map_irq(struct pci_dev *dev, u8 idsel, u8 pin)
62{
63 static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA};
64 static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD};
65 static int usb_irq[] = {INTB, INTC, INTD, -1};
66 static int mini_pci_1_irq[] = {INTB, INTC, -1, -1};
67 static int mini_pci_2_irq[] = {INTC, INTD, -1, -1};
68
69 switch(dev->bus->number) {
70 case 0:
71 switch(dev->devfn) {
72 case 0x0: // PCI-PCI bridge
73 break;
74 case 0x8: // PCI Card Slot
75 return pci_card_slot_irq[pin - 1];
76 case 0x10: // PMC Slot
77 return pmc_card_slot_irq[pin - 1];
78 case 0x18: // PMC Slot Secondary Agent
79 break;
80 case 0x20: // IXP Processor
81 break;
82 default:
83 return NO_IRQ;
84 }
85 break;
86
87 case 1:
88 switch(dev->devfn) {
89 case 0x0: // IDE Controller
90 return (pin == 1) ? INTC : -1;
91 case 0x8: // USB fun 0
92 case 0x9: // USB fun 1
93 case 0xa: // USB fun 2
94 return usb_irq[pin - 1];
95 case 0x10: // Mini PCI 1
96 return mini_pci_1_irq[pin-1];
97 case 0x18: // Mini PCI 2
98 return mini_pci_2_irq[pin-1];
99 case 0x20: // MEM slot
100 return (pin == 1) ? INTA : -1;
101 default:
102 return NO_IRQ;
103 }
104 break;
105
106 default:
107 return NO_IRQ;
108 }
109
110 return NO_IRQ;
111}
112
Russell Kingcdea4602007-05-30 17:48:45 +0100[diff] [blame^]113static void __init roadrunner_pci_preinit(void)
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100[diff] [blame]114{
115 set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQT_LOW);
116 set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQT_LOW);
117
118 ixp23xx_pci_preinit();
119}
120
121static struct hw_pci roadrunner_pci __initdata = {
122 .nr_controllers = 1,
123 .preinit = roadrunner_pci_preinit,
124 .setup = ixp23xx_pci_setup,
125 .scan = ixp23xx_pci_scan_bus,
126 .map_irq = roadrunner_map_irq,
127};
128
129static int __init roadrunner_pci_init(void)
130{
131 if (machine_is_roadrunner())
132 pci_common_init(&roadrunner_pci);
133
134 return 0;
135};
136
137subsys_initcall(roadrunner_pci_init);
138
Lennert Buytenhek84b61f62006-06-22 10:30:52 +0100[diff] [blame]139static struct physmap_flash_data roadrunner_flash_data = {
140 .width = 2,
141};
142
143static struct resource roadrunner_flash_resource = {
144 .start = 0x90000000,
Lennert Buytenhek562ca1e2006-06-27 22:56:17 +0100[diff] [blame]145 .end = 0x93ffffff,
Lennert Buytenhek84b61f62006-06-22 10:30:52 +0100[diff] [blame]146 .flags = IORESOURCE_MEM,
147};
148
149static struct platform_device roadrunner_flash = {
150 .name = "physmap-flash",
151 .id = 0,
152 .dev = {
153 .platform_data = &roadrunner_flash_data,
154 },
155 .num_resources = 1,
156 .resource = &roadrunner_flash_resource,
157};
158
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100[diff] [blame]159static void __init roadrunner_init(void)
160{
Lennert Buytenhek84b61f62006-06-22 10:30:52 +0100[diff] [blame]161 platform_device_register(&roadrunner_flash);
Lennert Buytenhekc4713072006-03-28 21:18:54 +0100[diff] [blame]162
163 /*
164 * Mark flash as writeable
165 */
166 IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE;
167 IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE;
168 IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE;
169 IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE;
170
171 ixp23xx_sys_init();
172}
173
174MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform")
175 /* Maintainer: Deepak Saxena */
176 .phys_io = IXP23XX_PERIPHERAL_PHYS,
177 .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc,
178 .map_io = ixp23xx_map_io,
179 .init_irq = ixp23xx_init_irq,
180 .timer = &ixp23xx_timer,
181 .boot_params = 0x00000100,
182 .init_machine = roadrunner_init,
183MACHINE_END