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1 | /* |
2 | * Procfs interface for the Zorro bus. |
3 | * |
4 | * Copyright (C) 1998-2003 Geert Uytterhoeven |
5 | * |
6 | * Heavily based on the procfs interface for the PCI bus, which is |
7 | * |
8 | * Copyright (C) 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz> |
9 | */ |
10 | |
11 | #include <linux/types.h> |
12 | #include <linux/zorro.h> |
13 | #include <linux/proc_fs.h> |
14 | #include <linux/seq_file.h> |
15 | #include <linux/init.h> |
16 | #include <linux/smp_lock.h> |
17 | #include <asm/uaccess.h> |
18 | #include <asm/amigahw.h> |
19 | #include <asm/setup.h> |
20 | |
21 | static loff_t |
22 | proc_bus_zorro_lseek(struct file *file, loff_t off, int whence) |
23 | { |
24 | loff_t new = -1; |
25 | |
26 | lock_kernel(); |
27 | switch (whence) { |
28 | case 0: |
29 | new = off; |
30 | break; |
31 | case 1: |
32 | new = file->f_pos + off; |
33 | break; |
34 | case 2: |
35 | new = sizeof(struct ConfigDev) + off; |
36 | break; |
37 | } |
38 | if (new < 0 || new > sizeof(struct ConfigDev)) { |
39 | unlock_kernel(); |
40 | return -EINVAL; |
41 | } |
42 | unlock_kernel(); |
43 | return (file->f_pos = new); |
44 | } |
45 | |
46 | static ssize_t |
47 | proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) |
48 | { |
49 | struct inode *ino = file->f_path.dentry->d_inode; |
50 | struct proc_dir_entry *dp = PDE(ino); |
51 | struct zorro_dev *z = dp->data; |
52 | struct ConfigDev cd; |
53 | loff_t pos = *ppos; |
54 | |
55 | if (pos >= sizeof(struct ConfigDev)) |
56 | return 0; |
57 | if (nbytes >= sizeof(struct ConfigDev)) |
58 | nbytes = sizeof(struct ConfigDev); |
59 | if (pos + nbytes > sizeof(struct ConfigDev)) |
60 | nbytes = sizeof(struct ConfigDev) - pos; |
61 | |
62 | /* Construct a ConfigDev */ |
63 | memset(&cd, 0, sizeof(cd)); |
64 | cd.cd_Rom = z->rom; |
65 | cd.cd_SlotAddr = z->slotaddr; |
66 | cd.cd_SlotSize = z->slotsize; |
67 | cd.cd_BoardAddr = (void *)zorro_resource_start(z); |
68 | cd.cd_BoardSize = zorro_resource_len(z); |
69 | |
70 | if (copy_to_user(buf, &cd, nbytes)) |
71 | return -EFAULT; |
72 | *ppos += nbytes; |
73 | |
74 | return nbytes; |
75 | } |
76 | |
77 | static const struct file_operations proc_bus_zorro_operations = { |
78 | .owner = THIS_MODULE, |
79 | .llseek = proc_bus_zorro_lseek, |
80 | .read = proc_bus_zorro_read, |
81 | }; |
82 | |
83 | static void * zorro_seq_start(struct seq_file *m, loff_t *pos) |
84 | { |
85 | return (*pos < zorro_num_autocon) ? pos : NULL; |
86 | } |
87 | |
88 | static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos) |
89 | { |
90 | (*pos)++; |
91 | return (*pos < zorro_num_autocon) ? pos : NULL; |
92 | } |
93 | |
94 | static void zorro_seq_stop(struct seq_file *m, void *v) |
95 | { |
96 | } |
97 | |
98 | static int zorro_seq_show(struct seq_file *m, void *v) |
99 | { |
100 | u_int slot = *(loff_t *)v; |
101 | struct zorro_dev *z = &zorro_autocon[slot]; |
102 | |
103 | seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id, |
104 | (unsigned long)zorro_resource_start(z), |
105 | (unsigned long)zorro_resource_len(z), |
106 | z->rom.er_Type); |
107 | return 0; |
108 | } |
109 | |
110 | static const struct seq_operations zorro_devices_seq_ops = { |
111 | .start = zorro_seq_start, |
112 | .next = zorro_seq_next, |
113 | .stop = zorro_seq_stop, |
114 | .show = zorro_seq_show, |
115 | }; |
116 | |
117 | static int zorro_devices_proc_open(struct inode *inode, struct file *file) |
118 | { |
119 | return seq_open(file, &zorro_devices_seq_ops); |
120 | } |
121 | |
122 | static const struct file_operations zorro_devices_proc_fops = { |
123 | .owner = THIS_MODULE, |
124 | .open = zorro_devices_proc_open, |
125 | .read = seq_read, |
126 | .llseek = seq_lseek, |
127 | .release = seq_release, |
128 | }; |
129 | |
130 | static struct proc_dir_entry *proc_bus_zorro_dir; |
131 | |
132 | static int __init zorro_proc_attach_device(u_int slot) |
133 | { |
134 | struct proc_dir_entry *entry; |
135 | char name[4]; |
136 | |
137 | sprintf(name, "%02x", slot); |
138 | entry = proc_create_data(name, 0, proc_bus_zorro_dir, |
139 | &proc_bus_zorro_operations, |
140 | &zorro_autocon[slot]); |
141 | if (!entry) |
142 | return -ENOMEM; |
143 | entry->size = sizeof(struct zorro_dev); |
144 | return 0; |
145 | } |
146 | |
147 | static int __init zorro_proc_init(void) |
148 | { |
149 | u_int slot; |
150 | |
151 | if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) { |
152 | proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL); |
153 | proc_create("devices", 0, proc_bus_zorro_dir, |
154 | &zorro_devices_proc_fops); |
155 | for (slot = 0; slot < zorro_num_autocon; slot++) |
156 | zorro_proc_attach_device(slot); |
157 | } |
158 | return 0; |
159 | } |
160 | |
161 | device_initcall(zorro_proc_init); |
162 |
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