Git Repo - linux.git/blame_incremental

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Commit	Line	Data
	1	// SPDX-License-Identifier: GPL-2.0
	2	/*
	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 <[email protected]>
	10	*/
	11
	12	#include <linux/types.h>
	13	#include <linux/zorro.h>
	14	#include <linux/proc_fs.h>
	15	#include <linux/seq_file.h>
	16	#include <linux/init.h>
	17	#include <linux/export.h>
	18
	19	#include <asm/byteorder.h>
	20	#include <linux/uaccess.h>
	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	{
	27	return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev));
	28	}
	29
	30	static ssize_t
	31	proc_bus_zorro_read(struct file file, char __user buf, size_t nbytes, loff_t *ppos)
	32	{
	33	struct zorro_dev *z = PDE_DATA(file_inode(file));
	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;
	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));
	51
	52	if (copy_to_user(buf, (void *)&cd + pos, nbytes))
	53	return -EFAULT;
	54	*ppos += nbytes;
	55
	56	return nbytes;
	57	}
	58
	59	static const struct proc_ops bus_zorro_proc_ops = {
	60	.proc_lseek = proc_bus_zorro_lseek,
	61	.proc_read = proc_bus_zorro_read,
	62	};
	63
	64	static void * zorro_seq_start(struct seq_file m, loff_t pos)
	65	{
	66	return (*pos < zorro_num_autocon) ? pos : NULL;
	67	}
	68
	69	static 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
	75	static void zorro_seq_stop(struct seq_file m, void v)
	76	{
	77	}
	78
	79	static 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
	91	static 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
	98	static struct proc_dir_entry *proc_bus_zorro_dir;
	99
	100	static int __init zorro_proc_attach_device(unsigned int slot)
	101	{
	102	struct proc_dir_entry *entry;
	103	char name[4];
	104
	105	sprintf(name, "%02x", slot);
	106	entry = proc_create_data(name, 0, proc_bus_zorro_dir,
	107	&bus_zorro_proc_ops,
	108	&zorro_autocon[slot]);
	109	if (!entry)
	110	return -ENOMEM;
	111	proc_set_size(entry, sizeof(struct zorro_dev));
	112	return 0;
	113	}
	114
	115	static int __init zorro_proc_init(void)
	116	{
	117	unsigned int slot;
	118
	119	if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) {
	120	proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL);
	121	proc_create_seq("devices", 0, proc_bus_zorro_dir,
	122	&zorro_devices_seq_ops);
	123	for (slot = 0; slot < zorro_num_autocon; slot++)
	124	zorro_proc_attach_device(slot);
	125	}
	126	return 0;
	127	}
	128
	129	device_initcall(zorro_proc_init);