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129 lines
3.1 KiB
129 lines
3.1 KiB
// SPDX-License-Identifier: GPL-2.0 |
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/* |
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* Procfs interface for the Zorro bus. |
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* |
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* Copyright (C) 1998-2003 Geert Uytterhoeven |
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* |
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* Heavily based on the procfs interface for the PCI bus, which is |
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* |
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* Copyright (C) 1997, 1998 Martin Mares <[email protected]> |
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*/ |
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#include <linux/types.h> |
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#include <linux/zorro.h> |
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#include <linux/proc_fs.h> |
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#include <linux/seq_file.h> |
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#include <linux/init.h> |
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#include <linux/export.h> |
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#include <asm/byteorder.h> |
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#include <linux/uaccess.h> |
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#include <asm/amigahw.h> |
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#include <asm/setup.h> |
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static loff_t |
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proc_bus_zorro_lseek(struct file *file, loff_t off, int whence) |
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{ |
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return fixed_size_llseek(file, off, whence, sizeof(struct ConfigDev)); |
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} |
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static ssize_t |
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proc_bus_zorro_read(struct file *file, char __user *buf, size_t nbytes, loff_t *ppos) |
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{ |
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struct zorro_dev *z = PDE_DATA(file_inode(file)); |
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struct ConfigDev cd; |
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loff_t pos = *ppos; |
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if (pos >= sizeof(struct ConfigDev)) |
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return 0; |
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if (nbytes >= sizeof(struct ConfigDev)) |
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nbytes = sizeof(struct ConfigDev); |
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if (pos + nbytes > sizeof(struct ConfigDev)) |
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nbytes = sizeof(struct ConfigDev) - pos; |
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/* Construct a ConfigDev */ |
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memset(&cd, 0, sizeof(cd)); |
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cd.cd_Rom = z->rom; |
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cd.cd_SlotAddr = cpu_to_be16(z->slotaddr); |
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cd.cd_SlotSize = cpu_to_be16(z->slotsize); |
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cd.cd_BoardAddr = cpu_to_be32(zorro_resource_start(z)); |
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cd.cd_BoardSize = cpu_to_be32(zorro_resource_len(z)); |
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if (copy_to_user(buf, (void *)&cd + pos, nbytes)) |
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return -EFAULT; |
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*ppos += nbytes; |
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return nbytes; |
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} |
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static const struct proc_ops bus_zorro_proc_ops = { |
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.proc_lseek = proc_bus_zorro_lseek, |
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.proc_read = proc_bus_zorro_read, |
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}; |
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static void * zorro_seq_start(struct seq_file *m, loff_t *pos) |
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{ |
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return (*pos < zorro_num_autocon) ? pos : NULL; |
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} |
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static void * zorro_seq_next(struct seq_file *m, void *v, loff_t *pos) |
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{ |
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(*pos)++; |
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return (*pos < zorro_num_autocon) ? pos : NULL; |
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} |
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static void zorro_seq_stop(struct seq_file *m, void *v) |
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{ |
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} |
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static int zorro_seq_show(struct seq_file *m, void *v) |
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{ |
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unsigned int slot = *(loff_t *)v; |
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struct zorro_dev *z = &zorro_autocon[slot]; |
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seq_printf(m, "%02x\t%08x\t%08lx\t%08lx\t%02x\n", slot, z->id, |
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(unsigned long)zorro_resource_start(z), |
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(unsigned long)zorro_resource_len(z), |
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z->rom.er_Type); |
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return 0; |
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} |
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static const struct seq_operations zorro_devices_seq_ops = { |
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.start = zorro_seq_start, |
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.next = zorro_seq_next, |
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.stop = zorro_seq_stop, |
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.show = zorro_seq_show, |
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}; |
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static struct proc_dir_entry *proc_bus_zorro_dir; |
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static int __init zorro_proc_attach_device(unsigned int slot) |
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{ |
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struct proc_dir_entry *entry; |
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char name[4]; |
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sprintf(name, "%02x", slot); |
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entry = proc_create_data(name, 0, proc_bus_zorro_dir, |
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&bus_zorro_proc_ops, |
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&zorro_autocon[slot]); |
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if (!entry) |
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return -ENOMEM; |
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proc_set_size(entry, sizeof(struct zorro_dev)); |
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return 0; |
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} |
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static int __init zorro_proc_init(void) |
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{ |
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unsigned int slot; |
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if (MACH_IS_AMIGA && AMIGAHW_PRESENT(ZORRO)) { |
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proc_bus_zorro_dir = proc_mkdir("bus/zorro", NULL); |
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proc_create_seq("devices", 0, proc_bus_zorro_dir, |
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&zorro_devices_seq_ops); |
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for (slot = 0; slot < zorro_num_autocon; slot++) |
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zorro_proc_attach_device(slot); |
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} |
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return 0; |
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} |
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device_initcall(zorro_proc_init);
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