ide-sysfs.c

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#include <linux/kernel.h>
#include <linux/ide.h>

char *ide_media_string(ide_drive_t *drive)
{
    switch (drive->media) {
    case ide_disk:
        return "disk";
    case ide_cdrom:
        return "cdrom";
    case ide_tape:
        return "tape";
    case ide_floppy:
        return "floppy";
    case ide_optical:
        return "optical";
    default:
        return "UNKNOWN";
    }
}

static ssize_t media_show(struct device *dev, struct device_attribute *attr,
              char *buf)
{
    ide_drive_t *drive = to_ide_device(dev);
    return sprintf(buf, "%s\n", ide_media_string(drive));
}

static ssize_t drivename_show(struct device *dev, struct device_attribute *attr,
                  char *buf)
{
    ide_drive_t *drive = to_ide_device(dev);
    return sprintf(buf, "%s\n", drive->name);
}

static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
                 char *buf)
{
    ide_drive_t *drive = to_ide_device(dev);
    return sprintf(buf, "ide:m-%s\n", ide_media_string(drive));
}

static ssize_t model_show(struct device *dev, struct device_attribute *attr,
              char *buf)
{
    ide_drive_t *drive = to_ide_device(dev);
    return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_PROD]);
}

static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
                 char *buf)
{
    ide_drive_t *drive = to_ide_device(dev);
    return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_FW_REV]);
}

static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
               char *buf)
{
    ide_drive_t *drive = to_ide_device(dev);
    return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_SERNO]);
}

struct device_attribute ide_dev_attrs[] = {
    __ATTR_RO(media),
    __ATTR_RO(drivename),
    __ATTR_RO(modalias),
    __ATTR_RO(model),
    __ATTR_RO(firmware),
    __ATTR(serial, 0400, serial_show, NULL),
    __ATTR(unload_heads, 0644, ide_park_show, ide_park_store),
    __ATTR_NULL
};

static ssize_t store_delete_devices(struct device *portdev,
                    struct device_attribute *attr,
                    const char *buf, size_t n)
{
    ide_hwif_t *hwif = dev_get_drvdata(portdev);

    if (strncmp(buf, "1", n))
        return -EINVAL;

    ide_port_unregister_devices(hwif);

    return n;
};

static DEVICE_ATTR(delete_devices, S_IWUSR, NULL, store_delete_devices);

static ssize_t store_scan(struct device *portdev,
              struct device_attribute *attr,
              const char *buf, size_t n)
{
    ide_hwif_t *hwif = dev_get_drvdata(portdev);

    if (strncmp(buf, "1", n))
        return -EINVAL;

    ide_port_unregister_devices(hwif);
    ide_port_scan(hwif);

    return n;
};

static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);

static struct device_attribute *ide_port_attrs[] = {
    &dev_attr_delete_devices,
    &dev_attr_scan,
    NULL
};

int ide_sysfs_register_port(ide_hwif_t *hwif)
{
    int i, uninitialized_var(rc);

    for (i = 0; ide_port_attrs[i]; i++) {
        rc = device_create_file(hwif->portdev, ide_port_attrs[i]);
        if (rc)
            break;
    }

    return rc;
}