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Commit | Line | Data |
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1da177e4 | 1 | /* |
1da177e4 LT |
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> | |
8331438b | 14 | #include <linux/seq_file.h> |
1da177e4 | 15 | #include <linux/init.h> |
8aaf7a0e | 16 | #include <linux/export.h> |
1da177e4 LT |
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; | |
496ad9aa | 25 | struct inode *inode = file_inode(file); |
1da177e4 | 26 | |
d50ac468 | 27 | mutex_lock(&inode->i_mutex); |
1da177e4 LT |
28 | switch (whence) { |
29 | case 0: | |
30 | new = off; | |
31 | break; | |
32 | case 1: | |
33 | new = file->f_pos + off; | |
34 | break; | |
35 | case 2: | |
36 | new = sizeof(struct ConfigDev) + off; | |
37 | break; | |
38 | } | |
d50ac468 GU |
39 | if (new < 0 || new > sizeof(struct ConfigDev)) |
40 | new = -EINVAL; | |
41 | else | |
42 | file->f_pos = new; | |
43 | mutex_unlock(&inode->i_mutex); | |
44 | return new; | |
1da177e4 LT |
45 | } |
46 | ||
47 | static ssize_t | |
d998265f | 48 | proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) |
1da177e4 | 49 | { |
d9dda78b | 50 | struct zorro_dev *z = PDE_DATA(file_inode(file)); |
1da177e4 LT |
51 | struct ConfigDev cd; |
52 | loff_t pos = *ppos; | |
53 | ||
54 | if (pos >= sizeof(struct ConfigDev)) | |
55 | return 0; | |
56 | if (nbytes >= sizeof(struct ConfigDev)) | |
57 | nbytes = sizeof(struct ConfigDev); | |
58 | if (pos + nbytes > sizeof(struct ConfigDev)) | |
59 | nbytes = sizeof(struct ConfigDev) - pos; | |
60 | ||
61 | /* Construct a ConfigDev */ | |
62 | memset(&cd, 0, sizeof(cd)); | |
63 | cd.cd_Rom = z->rom; | |
64 | cd.cd_SlotAddr = z->slotaddr; | |
65 | cd.cd_SlotSize = z->slotsize; | |
66 | cd.cd_BoardAddr = (void *)zorro_resource_start(z); | |
67 | cd.cd_BoardSize = zorro_resource_len(z); | |
68 | ||
2190a1e7 | 69 | if (copy_to_user(buf, (void *)&cd + pos, nbytes)) |
1da177e4 LT |
70 | return -EFAULT; |
71 | *ppos += nbytes; | |
72 | ||
73 | return nbytes; | |
74 | } | |
75 | ||
00977a59 | 76 | static const struct file_operations proc_bus_zorro_operations = { |
659f865e | 77 | .owner = THIS_MODULE, |
1da177e4 LT |
78 | .llseek = proc_bus_zorro_lseek, |
79 | .read = proc_bus_zorro_read, | |
80 | }; | |
81 | ||
8331438b | 82 | static void * zorro_seq_start(struct seq_file *m, loff_t *pos) |
1da177e4 | 83 | { |
8331438b AD |
84 | return (*pos < zorro_num_autocon) ? pos : NULL; |
85 | } | |
86 | ||
87 | static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos) | |
88 | { | |
89 | (*pos)++; | |
90 | return (*pos < zorro_num_autocon) ? pos : NULL; | |
91 | } | |
92 | ||
93 | static void zorro_seq_stop(struct seq_file *m, void *v) | |
94 | { | |
95 | } | |
96 | ||
97 | static int zorro_seq_show(struct seq_file *m, void *v) | |
98 | { | |
0d305464 | 99 | unsigned int slot = *(loff_t *)v; |
8331438b AD |
100 | struct zorro_dev *z = &zorro_autocon[slot]; |
101 | ||
102 | seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id, | |
103 | (unsigned long)zorro_resource_start(z), | |
104 | (unsigned long)zorro_resource_len(z), | |
105 | z->rom.er_Type); | |
106 | return 0; | |
107 | } | |
108 | ||
109 | static const struct seq_operations zorro_devices_seq_ops = { | |
110 | .start = zorro_seq_start, | |
111 | .next = zorro_seq_next, | |
112 | .stop = zorro_seq_stop, | |
113 | .show = zorro_seq_show, | |
114 | }; | |
115 | ||
116 | static int zorro_devices_proc_open(struct inode *inode, struct file *file) | |
117 | { | |
118 | return seq_open(file, &zorro_devices_seq_ops); | |
1da177e4 LT |
119 | } |
120 | ||
8331438b AD |
121 | static const struct file_operations zorro_devices_proc_fops = { |
122 | .owner = THIS_MODULE, | |
123 | .open = zorro_devices_proc_open, | |
124 | .read = seq_read, | |
125 | .llseek = seq_lseek, | |
126 | .release = seq_release, | |
127 | }; | |
128 | ||
1da177e4 LT |
129 | static struct proc_dir_entry *proc_bus_zorro_dir; |
130 | ||
0d305464 | 131 | static int __init zorro_proc_attach_device(unsigned int slot) |
1da177e4 LT |
132 | { |
133 | struct proc_dir_entry *entry; | |
134 | char name[4]; | |
135 | ||
136 | sprintf(name, "%02x", slot); | |
659f865e DL |
137 | entry = proc_create_data(name, 0, proc_bus_zorro_dir, |
138 | &proc_bus_zorro_operations, | |
139 | &zorro_autocon[slot]); | |
1da177e4 LT |
140 | if (!entry) |
141 | return -ENOMEM; | |
271a15ea | 142 | proc_set_size(entry, sizeof(struct zorro_dev)); |
1da177e4 LT |
143 | return 0; |
144 | } | |
145 | ||
146 | static int __init zorro_proc_init(void) | |
147 | { | |
0d305464 | 148 | unsigned int slot; |
1da177e4 LT |
149 | |
150 | if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) { | |
9c37066d | 151 | proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL); |
8331438b AD |
152 | proc_create("devices", 0, proc_bus_zorro_dir, |
153 | &zorro_devices_proc_fops); | |
1da177e4 LT |
154 | for (slot = 0; slot < zorro_num_autocon; slot++) |
155 | zorro_proc_attach_device(slot); | |
156 | } | |
157 | return 0; | |
158 | } | |
159 | ||
a6a26a3e | 160 | device_initcall(zorro_proc_init); |