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drivers/ide/ide-sysfs.c 3.18 KB
b24413180   Greg Kroah-Hartman   License cleanup: ...
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  // SPDX-License-Identifier: GPL-2.0
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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
  ", ide_media_string(drive));
  }
fb3fed792   Greg Kroah-Hartman   ide: convert bus ...
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  static DEVICE_ATTR_RO(media);
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  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
  ", drive->name);
  }
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  static DEVICE_ATTR_RO(drivename);
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  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
  ", ide_media_string(drive));
  }
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  static DEVICE_ATTR_RO(modalias);
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  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
  ", (char *)&drive->id[ATA_ID_PROD]);
  }
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  static DEVICE_ATTR_RO(model);
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  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
  ", (char *)&drive->id[ATA_ID_FW_REV]);
  }
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  static DEVICE_ATTR_RO(firmware);
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  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
  ", (char *)&drive->id[ATA_ID_SERNO]);
  }
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  static DEVICE_ATTR(serial, 0400, serial_show, NULL);
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  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,
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  };
  
  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)
  {
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  	int i, rc;
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  	for (i = 0; ide_port_attrs[i]; i++) {
  		rc = device_create_file(hwif->portdev, ide_port_attrs[i]);
  		if (rc)
  			break;
  	}
  
  	return rc;
  }