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/*
* $Id: proc.c,v 1.1.2.1 1998/06/07 23:21:01 geert Exp $
*
* Procfs interface for the Zorro bus.
*
* Copyright (C) 1998-2003 Geert Uytterhoeven
*
* Heavily based on the procfs interface for the PCI bus, which is
*
* Copyright (C) 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
*/
#include <linux/types.h>
#include <linux/zorro.h>
#include <linux/proc_fs.h>
#include <linux/init.h>
#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/amigahw.h>
#include <asm/setup.h>
static loff_t
proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
{
loff_t new = -1;
lock_kernel();
switch (whence) {
case 0:
new = off;
break;
case 1:
new = file->f_pos + off;
break;
case 2:
new = sizeof(struct ConfigDev) + off;
break;
}
if (new < 0 || new > sizeof(struct ConfigDev)) {
unlock_kernel();
return -EINVAL;
}
unlock_kernel();
return (file->f_pos = new);
}
static ssize_t
proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
{
struct inode *ino = file->f_path.dentry->d_inode;
struct proc_dir_entry *dp = PDE(ino);
struct zorro_dev *z = dp->data;
struct ConfigDev cd;
loff_t pos = *ppos;
if (pos >= sizeof(struct ConfigDev))
return 0;
if (nbytes >= sizeof(struct ConfigDev))
nbytes = sizeof(struct ConfigDev);
if (pos + nbytes > sizeof(struct ConfigDev))
nbytes = sizeof(struct ConfigDev) - pos;
/* Construct a ConfigDev */
memset(&cd, 0, sizeof(cd));
cd.cd_Rom = z->rom;
cd.cd_SlotAddr = z->slotaddr;
cd.cd_SlotSize = z->slotsize;
cd.cd_BoardAddr = (void *)zorro_resource_start(z);
cd.cd_BoardSize = zorro_resource_len(z);
if (copy_to_user(buf, &cd, nbytes))
return -EFAULT;
*ppos += nbytes;
return nbytes;
}
static const struct file_operations proc_bus_zorro_operations = {
.llseek = proc_bus_zorro_lseek,
.read = proc_bus_zorro_read,
};
static int
get_zorro_dev_info(char *buf, char **start, off_t pos, int count)
{
u_int slot;
off_t at = 0;
int len, cnt;
for (slot = cnt = 0; slot < zorro_num_autocon && count > cnt; slot++) {
struct zorro_dev *z = &zorro_autocon[slot];
len = sprintf(buf, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot,
z->id, (unsigned long)zorro_resource_start(z),
(unsigned long)zorro_resource_len(z),
z->rom.er_Type);
at += len;
if (at >= pos) {
if (!*start) {
*start = buf + (pos - (at - len));
cnt = at - pos;
} else
cnt += len;
buf += len;
}
}
return (count > cnt) ? cnt : count;
}
static struct proc_dir_entry *proc_bus_zorro_dir;
static int __init zorro_proc_attach_device(u_int slot)
{
struct proc_dir_entry *entry;
char name[4];
sprintf(name, "%02x", slot);
entry = create_proc_entry(name, 0, proc_bus_zorro_dir);
if (!entry)
return -ENOMEM;
entry->proc_fops = &proc_bus_zorro_operations;
entry->data = &zorro_autocon[slot];
entry->size = sizeof(struct zorro_dev);
return 0;
}
static int __init zorro_proc_init(void)
{
u_int slot;
if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
create_proc_info_entry("devices", 0, proc_bus_zorro_dir,
get_zorro_dev_info);
for (slot = 0; slot < zorro_num_autocon; slot++)
zorro_proc_attach_device(slot);
}
return 0;
}
__initcall(zorro_proc_init);
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