sh: rework ipr code
[linux-2.6.git] / arch / sh / boards / snapgear / setup.c
1 /*
2  * linux/arch/sh/boards/snapgear/setup.c
3  *
4  * Copyright (C) 2002  David McCullough <davidm@snapgear.com>
5  * Copyright (C) 2003  Paul Mundt <lethal@linux-sh.org>
6  *
7  * Based on files with the following comments:
8  *
9  *           Copyright (C) 2000  Kazumoto Kojima
10  *
11  *           Modified for 7751 Solution Engine by
12  *           Ian da Silva and Jeremy Siegel, 2001.
13  */
14 #include <linux/init.h>
15 #include <linux/irq.h>
16 #include <linux/interrupt.h>
17 #include <linux/timer.h>
18 #include <linux/delay.h>
19 #include <linux/module.h>
20 #include <linux/sched.h>
21 #include <asm/machvec.h>
22 #include <asm/snapgear.h>
23 #include <asm/irq.h>
24 #include <asm/io.h>
25 #include <asm/rtc.h>
26 #include <asm/cpu/timer.h>
27
28 extern void secureedge5410_rtc_init(void);
29 extern void pcibios_init(void);
30
31 /****************************************************************************/
32 /*
33  * EraseConfig handling functions
34  */
35
36 static irqreturn_t eraseconfig_interrupt(int irq, void *dev_id)
37 {
38         volatile char dummy __attribute__((unused)) = * (volatile char *) 0xb8000000;
39
40         printk("SnapGear: erase switch interrupt!\n");
41
42         return IRQ_HANDLED;
43 }
44
45 static int __init eraseconfig_init(void)
46 {
47         printk("SnapGear: EraseConfig init\n");
48         /* Setup "EraseConfig" switch on external IRQ 0 */
49         if (request_irq(IRL0_IRQ, eraseconfig_interrupt, IRQF_DISABLED,
50                                 "Erase Config", NULL))
51                 printk("SnapGear: failed to register IRQ%d for Reset witch\n",
52                                 IRL0_IRQ);
53         else
54                 printk("SnapGear: registered EraseConfig switch on IRQ%d\n",
55                                 IRL0_IRQ);
56         return(0);
57 }
58
59 module_init(eraseconfig_init);
60
61 /****************************************************************************/
62 /*
63  * Initialize IRQ setting
64  *
65  * IRL0 = erase switch
66  * IRL1 = eth0
67  * IRL2 = eth1
68  * IRL3 = crypto
69  */
70
71 static struct ipr_data ipr_irq_table[] = {
72         { IRL0_IRQ, 0, IRL0_IPR_POS, IRL0_PRIORITY },
73         { IRL1_IRQ, 0, IRL1_IPR_POS, IRL1_PRIORITY },
74         { IRL2_IRQ, 0, IRL2_IPR_POS, IRL2_PRIORITY },
75         { IRL3_IRQ, 0, IRL3_IPR_POS, IRL3_PRIORITY },
76 };
77
78 static unsigned long ipr_offsets[] = {
79         INTC_IPRD,
80 };
81
82 static struct ipr_desc ipr_irq_desc = {
83         .ipr_offsets    = ipr_offsets,
84         .nr_offsets     = ARRAY_SIZE(ipr_offsets),
85
86         .ipr_data       = ipr_irq_table,
87         .nr_irqs        = ARRAY_SIZE(ipr_irq_table),
88
89         .chip = {
90                 .name   = "IPR-snapgear",
91         },
92 };
93
94 static void __init init_snapgear_IRQ(void)
95 {
96         /* enable individual interrupt mode for externals */
97         ctrl_outw(ctrl_inw(INTC_ICR) | INTC_ICR_IRLM, INTC_ICR);
98
99         printk("Setup SnapGear IRQ/IPR ...\n");
100
101         register_ipr_controller(&ipr_irq_desc);
102 }
103
104 /*
105  * Initialize the board
106  */
107 static void __init snapgear_setup(char **cmdline_p)
108 {
109         board_time_init = secureedge5410_rtc_init;
110 }
111
112 /*
113  * The Machine Vector
114  */
115 static struct sh_machine_vector mv_snapgear __initmv = {
116         .mv_name                = "SnapGear SecureEdge5410",
117         .mv_setup               = snapgear_setup,
118         .mv_nr_irqs             = 72,
119
120         .mv_inb                 = snapgear_inb,
121         .mv_inw                 = snapgear_inw,
122         .mv_inl                 = snapgear_inl,
123         .mv_outb                = snapgear_outb,
124         .mv_outw                = snapgear_outw,
125         .mv_outl                = snapgear_outl,
126
127         .mv_inb_p               = snapgear_inb_p,
128         .mv_inw_p               = snapgear_inw,
129         .mv_inl_p               = snapgear_inl,
130         .mv_outb_p              = snapgear_outb_p,
131         .mv_outw_p              = snapgear_outw,
132         .mv_outl_p              = snapgear_outl,
133
134         .mv_init_irq            = init_snapgear_IRQ,
135 };