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/export.h>
17
18#include <asm/byteorder.h>
19#include <asm/uaccess.h>
20#include <asm/amigahw.h>
21#include <asm/setup.h>
22
23static loff_t
24proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
25{
26	return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev));
27}
28
29static ssize_t
30proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
31{
32	struct zorro_dev *z = PDE_DATA(file_inode(file));
33	struct ConfigDev cd;
34	loff_t pos = *ppos;
35
36	if (pos >= sizeof(struct ConfigDev))
37		return 0;
38	if (nbytes >= sizeof(struct ConfigDev))
39		nbytes = sizeof(struct ConfigDev);
40	if (pos + nbytes > sizeof(struct ConfigDev))
41		nbytes = sizeof(struct ConfigDev) - pos;
42
43	/* Construct a ConfigDev */
44	memset(&cd, 0, sizeof(cd));
45	cd.cd_Rom = z->rom;
46	cd.cd_SlotAddr = cpu_to_be16(z->slotaddr);
47	cd.cd_SlotSize = cpu_to_be16(z->slotsize);
48	cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z));
49	cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z));
50
51	if (copy_to_user(buf, (void *)&cd + pos, nbytes))
52		return -EFAULT;
53	*ppos += nbytes;
54
55	return nbytes;
56}
57
58static const struct file_operations proc_bus_zorro_operations = {
59	.owner		= THIS_MODULE,
60	.llseek		= proc_bus_zorro_lseek,
61	.read		= proc_bus_zorro_read,
62};
63
64static void * zorro_seq_start(struct seq_file *m, loff_t *pos)
65{
66	return (*pos < zorro_num_autocon) ? pos : NULL;
67}
68
69static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos)
70{
71	(*pos)++;
72	return (*pos < zorro_num_autocon) ? pos : NULL;
73}
74
75static void zorro_seq_stop(struct seq_file *m, void *v)
76{
77}
78
79static int zorro_seq_show(struct seq_file *m, void *v)
80{
81	unsigned int slot = *(loff_t *)v;
82	struct zorro_dev *z = &zorro_autocon[slot];
83
84	seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id,
85		   (unsigned long)zorro_resource_start(z),
86		   (unsigned long)zorro_resource_len(z),
87		   z->rom.er_Type);
88	return 0;
89}
90
91static const struct seq_operations zorro_devices_seq_ops = {
92	.start = zorro_seq_start,
93	.next  = zorro_seq_next,
94	.stop  = zorro_seq_stop,
95	.show  = zorro_seq_show,
96};
97
98static int zorro_devices_proc_open(struct inode *inode, struct file *file)
99{
100	return seq_open(file, &zorro_devices_seq_ops);
101}
102
103static const struct file_operations zorro_devices_proc_fops = {
104	.owner		= THIS_MODULE,
105	.open		= zorro_devices_proc_open,
106	.read		= seq_read,
107	.llseek		= seq_lseek,
108	.release	= seq_release,
109};
110
111static struct proc_dir_entry *proc_bus_zorro_dir;
112
113static int __init zorro_proc_attach_device(unsigned int slot)
114{
115	struct proc_dir_entry *entry;
116	char name[4];
117
118	sprintf(name, "%02x", slot);
119	entry = proc_create_data(name, 0, proc_bus_zorro_dir,
120				 &proc_bus_zorro_operations,
121				 &zorro_autocon[slot]);
122	if (!entry)
123		return -ENOMEM;
124	proc_set_size(entry, sizeof(struct zorro_dev));
125	return 0;
126}
127
128static int __init zorro_proc_init(void)
129{
130	unsigned int slot;
131
132	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
133		proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
134		proc_create("devices", 0, proc_bus_zorro_dir,
135			    &zorro_devices_proc_fops);
136		for (slot = 0; slot < zorro_num_autocon; slot++)
137			zorro_proc_attach_device(slot);
138	}
139	return 0;
140}
141
142device_initcall(zorro_proc_init);
143