zorro-sysfs.c

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/*
 *  File Attributes for Zorro Devices
 *
 *  Copyright (C) 2003 Geert Uytterhoeven
 *
 *  Loosely based on drivers/pci/pci-sysfs.c
 *
 *  This file is subject to the terms and conditions of the GNU General Public
 *  License.  See the file COPYING in the main directory of this archive
 *  for more details.
 */


#include <linux/kernel.h>
#include <linux/zorro.h>
#include <linux/stat.h>
#include <linux/string.h>

#include "zorro.h"


/* show configuration fields */
#define zorro_config_attr(name, field, format_string)           \
static ssize_t                              \
show_##name(struct device *dev, struct device_attribute *attr, char *buf)               \
{                                   \
    struct zorro_dev *z;                        \
                                    \
    z = to_zorro_dev(dev);                      \
    return sprintf(buf, format_string, z->field);           \
}                                   \
static DEVICE_ATTR(name, S_IRUGO, show_##name, NULL);

zorro_config_attr(id, id, "0x%08x\n");
zorro_config_attr(type, rom.er_Type, "0x%02x\n");
zorro_config_attr(serial, rom.er_SerialNumber, "0x%08x\n");
zorro_config_attr(slotaddr, slotaddr, "0x%04x\n");
zorro_config_attr(slotsize, slotsize, "0x%04x\n");

static ssize_t zorro_show_resource(struct device *dev, struct device_attribute *attr, char *buf)
{
    struct zorro_dev *z = to_zorro_dev(dev);

    return sprintf(buf, "0x%08lx 0x%08lx 0x%08lx\n",
               (unsigned long)zorro_resource_start(z),
               (unsigned long)zorro_resource_end(z),
               zorro_resource_flags(z));
}

static DEVICE_ATTR(resource, S_IRUGO, zorro_show_resource, NULL);

static ssize_t zorro_read_config(struct file *filp, struct kobject *kobj,
                 struct bin_attribute *bin_attr,
                 char *buf, loff_t off, size_t count)
{
    struct zorro_dev *z = to_zorro_dev(container_of(kobj, struct device,
                       kobj));
    struct ConfigDev cd;

    /* Construct a ConfigDev */
    memset(&cd, 0, sizeof(cd));
    cd.cd_Rom = z->rom;
    cd.cd_SlotAddr = z->slotaddr;
    cd.cd_SlotSize = z->slotsize;
    cd.cd_BoardAddr = (void *)zorro_resource_start(z);
    cd.cd_BoardSize = zorro_resource_len(z);

    return memory_read_from_buffer(buf, count, &off, &cd, sizeof(cd));
}

static struct bin_attribute zorro_config_attr = {
    .attr = {
        .name = "config",
        .mode = S_IRUGO,
    },
    .size = sizeof(struct ConfigDev),
    .read = zorro_read_config,
};

static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
                 char *buf)
{
    struct zorro_dev *z = to_zorro_dev(dev);

    return sprintf(buf, ZORRO_DEVICE_MODALIAS_FMT "\n", z->id);
}

static DEVICE_ATTR(modalias, S_IRUGO, modalias_show, NULL);

int zorro_create_sysfs_dev_files(struct zorro_dev *z)
{
    struct device *dev = &z->dev;
    int error;

    /* current configuration's attributes */
    if ((error = device_create_file(dev, &dev_attr_id)) ||
        (error = device_create_file(dev, &dev_attr_type)) ||
        (error = device_create_file(dev, &dev_attr_serial)) ||
        (error = device_create_file(dev, &dev_attr_slotaddr)) ||
        (error = device_create_file(dev, &dev_attr_slotsize)) ||
        (error = device_create_file(dev, &dev_attr_resource)) ||
        (error = device_create_file(dev, &dev_attr_modalias)) ||
        (error = sysfs_create_bin_file(&dev->kobj, &zorro_config_attr)))
        return error;

    return 0;
}