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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 LT |
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 | |
d998265f | 47 | proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) |
1da177e4 | 48 | { |
b3d7ae5f | 49 | struct inode *ino = file->f_path.dentry->d_inode; |
1da177e4 LT |
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 | ||
00977a59 | 77 | static const struct file_operations proc_bus_zorro_operations = { |
659f865e | 78 | .owner = THIS_MODULE, |
1da177e4 LT |
79 | .llseek = proc_bus_zorro_lseek, |
80 | .read = proc_bus_zorro_read, | |
81 | }; | |
82 | ||
8331438b | 83 | static void * zorro_seq_start(struct seq_file *m, loff_t *pos) |
1da177e4 | 84 | { |
8331438b AD |
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); | |
1da177e4 LT |
120 | } |
121 | ||
8331438b AD |
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 | ||
1da177e4 LT |
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); | |
659f865e DL |
138 | entry = proc_create_data(name, 0, proc_bus_zorro_dir, |
139 | &proc_bus_zorro_operations, | |
140 | &zorro_autocon[slot]); | |
1da177e4 LT |
141 | if (!entry) |
142 | return -ENOMEM; | |
1da177e4 LT |
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)) { | |
9c37066d | 152 | proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL); |
8331438b AD |
153 | proc_create("devices", 0, proc_bus_zorro_dir, |
154 | &zorro_devices_proc_fops); | |
1da177e4 LT |
155 | for (slot = 0; slot < zorro_num_autocon; slot++) |
156 | zorro_proc_attach_device(slot); | |
157 | } | |
158 | return 0; | |
159 | } | |
160 | ||
a6a26a3e | 161 | device_initcall(zorro_proc_init); |