Merge master.kernel.org:/pub/scm/linux/kernel/git/kyle/parisc-2.6
[linux-2.6] / arch / arm / mach-ixp23xx / roadrunner.c
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/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
61 static 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
113 static void __init roadrunner_pci_preinit(void)
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
121 static 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
129 static int __init roadrunner_pci_init(void)
130 {
131         if (machine_is_roadrunner())
132                 pci_common_init(&roadrunner_pci);
133
134         return 0;
135 };
136
137 subsys_initcall(roadrunner_pci_init);
138
139 static struct physmap_flash_data roadrunner_flash_data = {
140         .width          = 2,
141 };
142
143 static struct resource roadrunner_flash_resource = {
144         .start          = 0x90000000,
145         .end            = 0x93ffffff,
146         .flags          = IORESOURCE_MEM,
147 };
148
149 static 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
159 static void __init roadrunner_init(void)
160 {
161         platform_device_register(&roadrunner_flash);
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
174 MACHINE_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,
183 MACHINE_END