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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 | ||
59 | static int __init roadrunner_map_irq(struct pci_dev *dev, u8 idsel, u8 pin) | |
60 | { | |
61 | static int pci_card_slot_irq[] = {INTB, INTC, INTD, INTA}; | |
62 | static int pmc_card_slot_irq[] = {INTA, INTB, INTC, INTD}; | |
63 | static int usb_irq[] = {INTB, INTC, INTD, -1}; | |
64 | static int mini_pci_1_irq[] = {INTB, INTC, -1, -1}; | |
65 | static int mini_pci_2_irq[] = {INTC, INTD, -1, -1}; | |
66 | ||
67 | switch(dev->bus->number) { | |
68 | case 0: | |
69 | switch(dev->devfn) { | |
70 | case 0x0: // PCI-PCI bridge | |
71 | break; | |
72 | case 0x8: // PCI Card Slot | |
73 | return pci_card_slot_irq[pin - 1]; | |
74 | case 0x10: // PMC Slot | |
75 | return pmc_card_slot_irq[pin - 1]; | |
76 | case 0x18: // PMC Slot Secondary Agent | |
77 | break; | |
78 | case 0x20: // IXP Processor | |
79 | break; | |
80 | default: | |
81 | return NO_IRQ; | |
82 | } | |
83 | break; | |
84 | ||
85 | case 1: | |
86 | switch(dev->devfn) { | |
87 | case 0x0: // IDE Controller | |
88 | return (pin == 1) ? INTC : -1; | |
89 | case 0x8: // USB fun 0 | |
90 | case 0x9: // USB fun 1 | |
91 | case 0xa: // USB fun 2 | |
92 | return usb_irq[pin - 1]; | |
93 | case 0x10: // Mini PCI 1 | |
94 | return mini_pci_1_irq[pin-1]; | |
95 | case 0x18: // Mini PCI 2 | |
96 | return mini_pci_2_irq[pin-1]; | |
97 | case 0x20: // MEM slot | |
98 | return (pin == 1) ? INTA : -1; | |
99 | default: | |
100 | return NO_IRQ; | |
101 | } | |
102 | break; | |
103 | ||
104 | default: | |
105 | return NO_IRQ; | |
106 | } | |
107 | ||
108 | return NO_IRQ; | |
109 | } | |
110 | ||
cdea4606 | 111 | static void __init roadrunner_pci_preinit(void) |
c4713074 | 112 | { |
6cab4860 DB |
113 | set_irq_type(IRQ_ROADRUNNER_PCI_INTC, IRQ_TYPE_LEVEL_LOW); |
114 | set_irq_type(IRQ_ROADRUNNER_PCI_INTD, IRQ_TYPE_LEVEL_LOW); | |
c4713074 LB |
115 | |
116 | ixp23xx_pci_preinit(); | |
117 | } | |
118 | ||
119 | static struct hw_pci roadrunner_pci __initdata = { | |
120 | .nr_controllers = 1, | |
121 | .preinit = roadrunner_pci_preinit, | |
122 | .setup = ixp23xx_pci_setup, | |
123 | .scan = ixp23xx_pci_scan_bus, | |
124 | .map_irq = roadrunner_map_irq, | |
125 | }; | |
126 | ||
127 | static int __init roadrunner_pci_init(void) | |
128 | { | |
129 | if (machine_is_roadrunner()) | |
130 | pci_common_init(&roadrunner_pci); | |
131 | ||
132 | return 0; | |
133 | }; | |
134 | ||
135 | subsys_initcall(roadrunner_pci_init); | |
136 | ||
84b61f6d LB |
137 | static struct physmap_flash_data roadrunner_flash_data = { |
138 | .width = 2, | |
139 | }; | |
140 | ||
141 | static struct resource roadrunner_flash_resource = { | |
142 | .start = 0x90000000, | |
562ca1e3 | 143 | .end = 0x93ffffff, |
84b61f6d LB |
144 | .flags = IORESOURCE_MEM, |
145 | }; | |
146 | ||
147 | static struct platform_device roadrunner_flash = { | |
148 | .name = "physmap-flash", | |
149 | .id = 0, | |
150 | .dev = { | |
151 | .platform_data = &roadrunner_flash_data, | |
152 | }, | |
153 | .num_resources = 1, | |
154 | .resource = &roadrunner_flash_resource, | |
155 | }; | |
156 | ||
c4713074 LB |
157 | static void __init roadrunner_init(void) |
158 | { | |
84b61f6d | 159 | platform_device_register(&roadrunner_flash); |
c4713074 LB |
160 | |
161 | /* | |
162 | * Mark flash as writeable | |
163 | */ | |
164 | IXP23XX_EXP_CS0[0] |= IXP23XX_FLASH_WRITABLE; | |
165 | IXP23XX_EXP_CS0[1] |= IXP23XX_FLASH_WRITABLE; | |
166 | IXP23XX_EXP_CS0[2] |= IXP23XX_FLASH_WRITABLE; | |
167 | IXP23XX_EXP_CS0[3] |= IXP23XX_FLASH_WRITABLE; | |
168 | ||
169 | ixp23xx_sys_init(); | |
170 | } | |
171 | ||
172 | MACHINE_START(ROADRUNNER, "ADI Engineering RoadRunner Development Platform") | |
173 | /* Maintainer: Deepak Saxena */ | |
174 | .phys_io = IXP23XX_PERIPHERAL_PHYS, | |
175 | .io_pg_offst = ((IXP23XX_PERIPHERAL_VIRT >> 18)) & 0xfffc, | |
176 | .map_io = ixp23xx_map_io, | |
177 | .init_irq = ixp23xx_init_irq, | |
178 | .timer = &ixp23xx_timer, | |
179 | .boot_params = 0x00000100, | |
180 | .init_machine = roadrunner_init, | |
181 | MACHINE_END |