[mirror_ubuntu-bionic-kernel.git] / drivers / zorro / proc.c

// SPDX-License-Identifier: GPL-2.0
/*
 *	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/seq_file.h>
#include <linux/init.h>
#include <linux/export.h>

#include <asm/byteorder.h>
#include <linux/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)
{
	return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev));
}

static ssize_t
proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos)
{
	struct zorro_dev *z = PDE_DATA(file_inode(file));
	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 = cpu_to_be16(z->slotaddr);
	cd.cd_SlotSize = cpu_to_be16(z->slotsize);
	cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z));
	cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z));

	if (copy_to_user(buf, (void *)&cd + pos, nbytes))
		return -EFAULT;
	*ppos += nbytes;

	return nbytes;
}

static const struct file_operations proc_bus_zorro_operations = {
	.owner		= THIS_MODULE,
	.llseek		= proc_bus_zorro_lseek,
	.read		= proc_bus_zorro_read,
};

static void * zorro_seq_start(struct seq_file *m, loff_t *pos)
{
	return (*pos < zorro_num_autocon) ? pos : NULL;
}

static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos)
{
	(*pos)++;
	return (*pos < zorro_num_autocon) ? pos : NULL;
}

static void zorro_seq_stop(struct seq_file *m, void *v)
{
}

static int zorro_seq_show(struct seq_file *m, void *v)
{
	unsigned int slot = *(loff_t *)v;
	struct zorro_dev *z = &zorro_autocon[slot];

	seq_printf(m, "%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);
	return 0;
}

static const struct seq_operations zorro_devices_seq_ops = {
	.start = zorro_seq_start,
	.next  = zorro_seq_next,
	.stop  = zorro_seq_stop,
	.show  = zorro_seq_show,
};

static int zorro_devices_proc_open(struct inode *inode, struct file *file)
{
	return seq_open(file, &zorro_devices_seq_ops);
}

static const struct file_operations zorro_devices_proc_fops = {
	.owner		= THIS_MODULE,
	.open		= zorro_devices_proc_open,
	.read		= seq_read,
	.llseek		= seq_lseek,
	.release	= seq_release,
};

static struct proc_dir_entry *proc_bus_zorro_dir;

static int __init zorro_proc_attach_device(unsigned int slot)
{
	struct proc_dir_entry *entry;
	char name[4];

	sprintf(name, "%02x", slot);
	entry = proc_create_data(name, 0, proc_bus_zorro_dir,
				 &proc_bus_zorro_operations,
				 &zorro_autocon[slot]);
	if (!entry)
		return -ENOMEM;
	proc_set_size(entry, sizeof(struct zorro_dev));
	return 0;
}

static int __init zorro_proc_init(void)
{
	unsigned int slot;

	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
		proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
		proc_create("devices", 0, proc_bus_zorro_dir,
			    &zorro_devices_proc_fops);
		for (slot = 0; slot < zorro_num_autocon; slot++)
			zorro_proc_attach_device(slot);
	}
	return 0;
}

device_initcall(zorro_proc_init);
Commit	Line	Data
b2441318	1	// SPDX-License-Identifier: GPL-2.0
1da177e4	2	/*
1da177e4 LT	3	* Procfs interface for the Zorro bus.
	4	*
	5	* Copyright (C) 1998-2003 Geert Uytterhoeven
	6	*
	7	* Heavily based on the procfs interface for the PCI bus, which is
	8	*
	9	* Copyright (C) 1997, 1998 Martin Mares <mj@atrey.karlin.mff.cuni.cz>
	10	*/
	11
	12	#include <linux/types.h>
	13	#include <linux/zorro.h>
	14	#include <linux/proc_fs.h>
8331438b	15	#include <linux/seq_file.h>
1da177e4	16	#include <linux/init.h>
8aaf7a0e	17	#include <linux/export.h>
bd9ba8f4 GU	18
bd9ba8f4 GU	19	#include <asm/byteorder.h>
7c0f6ba6	20	#include <linux/uaccess.h>
1da177e4 LT	21	#include <asm/amigahw.h>
	22	#include <asm/setup.h>
	23
	24	static loff_t
	25	proc_bus_zorro_lseek(struct file *file, loff_t off, int whence)
	26	{
3be1f2b8	27	return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev));
1da177e4 LT	28	}
	29
	30	static ssize_t
d998265f	31	proc_bus_zorro_read(struct file file, char __user buf, size_t nbytes, loff_t *ppos)
1da177e4	32	{
d9dda78b	33	struct zorro_dev *z = PDE_DATA(file_inode(file));
1da177e4 LT	34	struct ConfigDev cd;
	35	loff_t pos = *ppos;
	36
	37	if (pos >= sizeof(struct ConfigDev))
	38	return 0;
	39	if (nbytes >= sizeof(struct ConfigDev))
	40	nbytes = sizeof(struct ConfigDev);
	41	if (pos + nbytes > sizeof(struct ConfigDev))
	42	nbytes = sizeof(struct ConfigDev) - pos;
	43
	44	/* Construct a ConfigDev */
	45	memset(&cd, 0, sizeof(cd));
	46	cd.cd_Rom = z->rom;
bd9ba8f4 GU	47	cd.cd_SlotAddr = cpu_to_be16(z->slotaddr);
	48	cd.cd_SlotSize = cpu_to_be16(z->slotsize);
	49	cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z));
	50	cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z));
1da177e4	51
2190a1e7	52	if (copy_to_user(buf, (void *)&cd + pos, nbytes))
1da177e4 LT	53	return -EFAULT;
	54	*ppos += nbytes;
	55
	56	return nbytes;
	57	}
	58
00977a59	59	static const struct file_operations proc_bus_zorro_operations = {
659f865e	60	.owner = THIS_MODULE,
1da177e4 LT	61	.llseek = proc_bus_zorro_lseek,
	62	.read = proc_bus_zorro_read,
	63	};
	64
8331438b	65	static void * zorro_seq_start(struct seq_file m, loff_t pos)
1da177e4	66	{
8331438b AD	67	return (*pos < zorro_num_autocon) ? pos : NULL;
	68	}
	69
	70	static void * zorro_seq_next(struct seq_file m, void v, loff_t *pos)
	71	{
	72	(*pos)++;
	73	return (*pos < zorro_num_autocon) ? pos : NULL;
	74	}
	75
	76	static void zorro_seq_stop(struct seq_file m, void v)
	77	{
	78	}
	79
	80	static int zorro_seq_show(struct seq_file m, void v)
	81	{
0d305464	82	unsigned int slot = (loff_t )v;
8331438b AD	83	struct zorro_dev *z = &zorro_autocon[slot];
	84
	85	seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id,
	86	(unsigned long)zorro_resource_start(z),
	87	(unsigned long)zorro_resource_len(z),
	88	z->rom.er_Type);
	89	return 0;
	90	}
	91
	92	static const struct seq_operations zorro_devices_seq_ops = {
	93	.start = zorro_seq_start,
	94	.next = zorro_seq_next,
	95	.stop = zorro_seq_stop,
	96	.show = zorro_seq_show,
	97	};
	98
	99	static int zorro_devices_proc_open(struct inode inode, struct file file)
	100	{
	101	return seq_open(file, &zorro_devices_seq_ops);
1da177e4 LT	102	}
1da177e4 LT	103
8331438b AD	104	static const struct file_operations zorro_devices_proc_fops = {
	105	.owner = THIS_MODULE,
	106	.open = zorro_devices_proc_open,
	107	.read = seq_read,
	108	.llseek = seq_lseek,
	109	.release = seq_release,
	110	};
	111
1da177e4 LT	112	static struct proc_dir_entry *proc_bus_zorro_dir;
1da177e4 LT	113
0d305464	114	static int __init zorro_proc_attach_device(unsigned int slot)
1da177e4 LT	115	{
	116	struct proc_dir_entry *entry;
	117	char name[4];
	118
	119	sprintf(name, "%02x", slot);
659f865e DL	120	entry = proc_create_data(name, 0, proc_bus_zorro_dir,
	121	&proc_bus_zorro_operations,
	122	&zorro_autocon[slot]);
1da177e4 LT	123	if (!entry)
1da177e4 LT	124	return -ENOMEM;
271a15ea	125	proc_set_size(entry, sizeof(struct zorro_dev));
1da177e4 LT	126	return 0;
	127	}
	128
	129	static int __init zorro_proc_init(void)
	130	{
0d305464	131	unsigned int slot;
1da177e4 LT	132
1da177e4 LT	133	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
9c37066d	134	proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
8331438b AD	135	proc_create("devices", 0, proc_bus_zorro_dir,
8331438b AD	136	&zorro_devices_proc_fops);
1da177e4 LT	137	for (slot = 0; slot < zorro_num_autocon; slot++)
	138	zorro_proc_attach_device(slot);
	139	}
	140	return 0;
	141	}
	142
a6a26a3e	143	device_initcall(zorro_proc_init);