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1// SPDX-License-Identifier: GPL-2.02/*3 * Procfs interface for the Zorro bus.4 *5 * Copyright (C) 1998-2003 Geert Uytterhoeven6 *7 * Heavily based on the procfs interface for the PCI bus, which is8 *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>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 24static loff_t25proc_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 30static ssize_t31proc_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 59static const struct proc_ops bus_zorro_proc_ops = {60 .proc_lseek = proc_bus_zorro_lseek,61 .proc_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 struct proc_dir_entry *proc_bus_zorro_dir;99 100static 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 115static 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 129device_initcall(zorro_proc_init);130