mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-23 13:32:50 +07:00
fddda2b7b5
Variants of proc_create{,_data} that directly take a struct seq_operations
argument and drastically reduces the boilerplate code in the callers.
All trivial callers converted over.
Signed-off-by: Christoph Hellwig <hch@lst.de>
131 lines
3.2 KiB
C
131 lines
3.2 KiB
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 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_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);
|