Release 4.14 drivers/ide/ide-sysfs.c

// SPDX-License-Identifier: GPL-2.0
#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";
	}
}

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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));
}
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static DEVICE_ATTR_RO(media);



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);
}
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static DEVICE_ATTR_RO(drivename);



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));
}
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static DEVICE_ATTR_RO(modalias);



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]);
}
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static DEVICE_ATTR_RO(model);



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]);
}
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static DEVICE_ATTR_RO(firmware);



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]);
}
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static DEVICE_ATTR(serial, 0400, serial_show, NULL);

static DEVICE_ATTR(unload_heads, 0644, ide_park_show, ide_park_store);


static struct attribute *ide_attrs[] = {
	&dev_attr_media.attr,
	&dev_attr_drivename.attr,
	&dev_attr_modalias.attr,
	&dev_attr_model.attr,
	&dev_attr_firmware.attr,
	&dev_attr_serial.attr,
	&dev_attr_unload_heads.attr,
	NULL,
};


static const struct attribute_group ide_attr_group = {
	.attrs = ide_attrs,
};


const struct attribute_group *ide_dev_groups[] = {
	&ide_attr_group,
	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;
}
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;

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;
}
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;

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;
}
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Directory: drivers/ide

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