Commit | Line | Data |
---|---|---|
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; | |
d50ac468 | 25 | struct inode *inode = file->f_path.dentry->d_inode; |
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 | { |
b3d7ae5f | 50 | struct inode *ino = file->f_path.dentry->d_inode; |
1da177e4 LT |
51 | struct proc_dir_entry *dp = PDE(ino); |
52 | struct zorro_dev *z = dp->data; | |
53 | struct ConfigDev cd; | |
54 | loff_t pos = *ppos; | |
55 | ||
56 | if (pos >= sizeof(struct ConfigDev)) | |
57 | return 0; | |
58 | if (nbytes >= sizeof(struct ConfigDev)) | |
59 | nbytes = sizeof(struct ConfigDev); | |
60 | if (pos + nbytes > sizeof(struct ConfigDev)) | |
61 | nbytes = sizeof(struct ConfigDev) - pos; | |
62 | ||
63 | /* Construct a ConfigDev */ | |
64 | memset(&cd, 0, sizeof(cd)); | |
65 | cd.cd_Rom = z->rom; | |
66 | cd.cd_SlotAddr = z->slotaddr; | |
67 | cd.cd_SlotSize = z->slotsize; | |
68 | cd.cd_BoardAddr = (void *)zorro_resource_start(z); | |
69 | cd.cd_BoardSize = zorro_resource_len(z); | |
70 | ||
2190a1e7 | 71 | if (copy_to_user(buf, (void *)&cd + pos, nbytes)) |
1da177e4 LT |
72 | return -EFAULT; |
73 | *ppos += nbytes; | |
74 | ||
75 | return nbytes; | |
76 | } | |
77 | ||
00977a59 | 78 | static const struct file_operations proc_bus_zorro_operations = { |
659f865e | 79 | .owner = THIS_MODULE, |
1da177e4 LT |
80 | .llseek = proc_bus_zorro_lseek, |
81 | .read = proc_bus_zorro_read, | |
82 | }; | |
83 | ||
8331438b | 84 | static void * zorro_seq_start(struct seq_file *m, loff_t *pos) |
1da177e4 | 85 | { |
8331438b AD |
86 | return (*pos < zorro_num_autocon) ? pos : NULL; |
87 | } | |
88 | ||
89 | static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos) | |
90 | { | |
91 | (*pos)++; | |
92 | return (*pos < zorro_num_autocon) ? pos : NULL; | |
93 | } | |
94 | ||
95 | static void zorro_seq_stop(struct seq_file *m, void *v) | |
96 | { | |
97 | } | |
98 | ||
99 | static int zorro_seq_show(struct seq_file *m, void *v) | |
100 | { | |
0d305464 | 101 | unsigned int slot = *(loff_t *)v; |
8331438b AD |
102 | struct zorro_dev *z = &zorro_autocon[slot]; |
103 | ||
104 | seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id, | |
105 | (unsigned long)zorro_resource_start(z), | |
106 | (unsigned long)zorro_resource_len(z), | |
107 | z->rom.er_Type); | |
108 | return 0; | |
109 | } | |
110 | ||
111 | static const struct seq_operations zorro_devices_seq_ops = { | |
112 | .start = zorro_seq_start, | |
113 | .next = zorro_seq_next, | |
114 | .stop = zorro_seq_stop, | |
115 | .show = zorro_seq_show, | |
116 | }; | |
117 | ||
118 | static int zorro_devices_proc_open(struct inode *inode, struct file *file) | |
119 | { | |
120 | return seq_open(file, &zorro_devices_seq_ops); | |
1da177e4 LT |
121 | } |
122 | ||
8331438b AD |
123 | static const struct file_operations zorro_devices_proc_fops = { |
124 | .owner = THIS_MODULE, | |
125 | .open = zorro_devices_proc_open, | |
126 | .read = seq_read, | |
127 | .llseek = seq_lseek, | |
128 | .release = seq_release, | |
129 | }; | |
130 | ||
1da177e4 LT |
131 | static struct proc_dir_entry *proc_bus_zorro_dir; |
132 | ||
0d305464 | 133 | static int __init zorro_proc_attach_device(unsigned int slot) |
1da177e4 LT |
134 | { |
135 | struct proc_dir_entry *entry; | |
136 | char name[4]; | |
137 | ||
138 | sprintf(name, "%02x", slot); | |
659f865e DL |
139 | entry = proc_create_data(name, 0, proc_bus_zorro_dir, |
140 | &proc_bus_zorro_operations, | |
141 | &zorro_autocon[slot]); | |
1da177e4 LT |
142 | if (!entry) |
143 | return -ENOMEM; | |
1da177e4 LT |
144 | entry->size = sizeof(struct zorro_dev); |
145 | return 0; | |
146 | } | |
147 | ||
148 | static int __init zorro_proc_init(void) | |
149 | { | |
0d305464 | 150 | unsigned int slot; |
1da177e4 LT |
151 | |
152 | if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) { | |
9c37066d | 153 | proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL); |
8331438b AD |
154 | proc_create("devices", 0, proc_bus_zorro_dir, |
155 | &zorro_devices_proc_fops); | |
1da177e4 LT |
156 | for (slot = 0; slot < zorro_num_autocon; slot++) |
157 | zorro_proc_attach_device(slot); | |
158 | } | |
159 | return 0; | |
160 | } | |
161 | ||
a6a26a3e | 162 | device_initcall(zorro_proc_init); |