iop: unconditionally initialize the ATU on platforms known to be 'hosts'
[linux-3.10.git] / arch / arm / mach-iop33x / iq80332.c
1 /*
2  * arch/arm/mach-iop33x/iq80332.c
3  *
4  * Board support code for the Intel IQ80332 platform.
5  *
6  * Author: Dave Jiang <dave.jiang@intel.com>
7  * Copyright (C) 2004 Intel Corp.
8  *
9  * This program is free software; you can redistribute it and/or modify it
10  * under the terms of the GNU General Public License as published by the
11  * Free Software Foundation; either version 2 of the License, or (at your
12  * option) any later version.
13  */
14
15 #include <linux/mm.h>
16 #include <linux/init.h>
17 #include <linux/kernel.h>
18 #include <linux/pci.h>
19 #include <linux/string.h>
20 #include <linux/slab.h>
21 #include <linux/serial_core.h>
22 #include <linux/serial_8250.h>
23 #include <linux/mtd/physmap.h>
24 #include <linux/platform_device.h>
25 #include <asm/hardware.h>
26 #include <asm/io.h>
27 #include <asm/irq.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30 #include <asm/mach/pci.h>
31 #include <asm/mach/time.h>
32 #include <asm/mach-types.h>
33 #include <asm/page.h>
34 #include <asm/pgtable.h>
35 #include <asm/arch/time.h>
36
37 /*
38  * IQ80332 timer tick configuration.
39  */
40 static void __init iq80332_timer_init(void)
41 {
42         /* D-Step parts and the iop333 run at a higher internal bus frequency */
43         if (*IOP3XX_ATURID >= 0xa || *IOP3XX_ATUDID == 0x374)
44                 iop_init_time(333000000);
45         else
46                 iop_init_time(266000000);
47 }
48
49 static struct sys_timer iq80332_timer = {
50         .init           = iq80332_timer_init,
51         .offset         = iop_gettimeoffset,
52 };
53
54
55 /*
56  * IQ80332 PCI.
57  */
58 static int __init
59 iq80332_pci_map_irq(struct pci_dev *dev, u8 slot, u8 pin)
60 {
61         int irq;
62
63         if (slot == 4 && pin == 1) {
64                 /* PCI-X Slot INTA */
65                 irq = IRQ_IOP33X_XINT0;
66         } else if (slot == 4 && pin == 2) {
67                 /* PCI-X Slot INTB */
68                 irq = IRQ_IOP33X_XINT1;
69         } else if (slot == 4 && pin == 3) {
70                 /* PCI-X Slot INTC */
71                 irq = IRQ_IOP33X_XINT2;
72         } else if (slot == 4 && pin == 4) {
73                 /* PCI-X Slot INTD */
74                 irq = IRQ_IOP33X_XINT3;
75         } else if (slot == 6) {
76                 /* GigE */
77                 irq = IRQ_IOP33X_XINT2;
78         } else {
79                 printk(KERN_ERR "iq80332_pci_map_irq() called for unknown "
80                         "device PCI:%d:%d:%d\n", dev->bus->number,
81                         PCI_SLOT(dev->devfn), PCI_FUNC(dev->devfn));
82                 irq = -1;
83         }
84
85         return irq;
86 }
87
88 static struct hw_pci iq80332_pci __initdata = {
89         .swizzle        = pci_std_swizzle,
90         .nr_controllers = 1,
91         .setup          = iop3xx_pci_setup,
92         .preinit        = iop3xx_pci_preinit_cond,
93         .scan           = iop3xx_pci_scan_bus,
94         .map_irq        = iq80332_pci_map_irq,
95 };
96
97 static int __init iq80332_pci_init(void)
98 {
99         if ((iop3xx_get_init_atu() == IOP3XX_INIT_ATU_ENABLE) &&
100                 machine_is_iq80332())
101                 pci_common_init(&iq80332_pci);
102
103         return 0;
104 }
105
106 subsys_initcall(iq80332_pci_init);
107
108
109 /*
110  * IQ80332 machine initialisation.
111  */
112 static struct physmap_flash_data iq80332_flash_data = {
113         .width          = 1,
114 };
115
116 static struct resource iq80332_flash_resource = {
117         .start          = 0xc0000000,
118         .end            = 0xc07fffff,
119         .flags          = IORESOURCE_MEM,
120 };
121
122 static struct platform_device iq80332_flash_device = {
123         .name           = "physmap-flash",
124         .id             = 0,
125         .dev            = {
126                 .platform_data  = &iq80332_flash_data,
127         },
128         .num_resources  = 1,
129         .resource       = &iq80332_flash_resource,
130 };
131
132 static void __init iq80332_init_machine(void)
133 {
134         platform_device_register(&iop3xx_i2c0_device);
135         platform_device_register(&iop3xx_i2c1_device);
136         platform_device_register(&iop33x_uart0_device);
137         platform_device_register(&iop33x_uart1_device);
138         platform_device_register(&iq80332_flash_device);
139         platform_device_register(&iop3xx_dma_0_channel);
140         platform_device_register(&iop3xx_dma_1_channel);
141         platform_device_register(&iop3xx_aau_channel);
142 }
143
144 MACHINE_START(IQ80332, "Intel IQ80332")
145         /* Maintainer: Intel Corp. */
146         .phys_io        = 0xfefff000,
147         .io_pg_offst    = ((0xfffff000) >> 18) & 0xfffc,
148         .boot_params    = 0x00000100,
149         .map_io         = iop3xx_map_io,
150         .init_irq       = iop33x_init_irq,
151         .timer          = &iq80332_timer,
152         .init_machine   = iq80332_init_machine,
153 MACHINE_END