// 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_tproc_bus_zorro_lseek(struct file *file, loff_t off, int whence){	return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev));} static ssize_tproc_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 proc_ops bus_zorro_proc_ops = {	.proc_lseek	= proc_bus_zorro_lseek,	.proc_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 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,				 &bus_zorro_proc_ops,				 &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_seq("devices", 0, proc_bus_zorro_dir,			    &zorro_devices_seq_ops);		for (slot = 0; slot < zorro_num_autocon; slot++)			zorro_proc_attach_device(slot);	}	return 0;} device_initcall(zorro_proc_init);