drivers/ide/ide-sysfs.c

   1 #include <linux/kernel.h>
   2 #include <linux/ide.h>
   3
   4 char *ide_media_string(ide_drive_t *drive)
   5 {
   6         switch (drive->media) {
   7         case ide_disk:
   8                 return "disk";
   9         case ide_cdrom:
  10                 return "cdrom";
  11         case ide_tape:
  12                 return "tape";
  13         case ide_floppy:
  14                 return "floppy";
  15         case ide_optical:
  16                 return "optical";
  17         default:
  18                 return "UNKNOWN";
  19         }
  20 }
  21
  22 static ssize_t media_show(struct device *dev, struct device_attribute *attr,
  23                           char *buf)
  24 {
  25         ide_drive_t *drive = to_ide_device(dev);
  26         return sprintf(buf, "%s\n", ide_media_string(drive));
  27 }
  28 static DEVICE_ATTR_RO(media);
  29
  30 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr,
  31                               char *buf)
  32 {
  33         ide_drive_t *drive = to_ide_device(dev);
  34         return sprintf(buf, "%s\n", drive->name);
  35 }
  36 static DEVICE_ATTR_RO(drivename);
  37
  38 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
  39                              char *buf)
  40 {
  41         ide_drive_t *drive = to_ide_device(dev);
  42         return sprintf(buf, "ide:m-%s\n", ide_media_string(drive));
  43 }
  44 static DEVICE_ATTR_RO(modalias);
  45
  46 static ssize_t model_show(struct device *dev, struct device_attribute *attr,
  47                           char *buf)
  48 {
  49         ide_drive_t *drive = to_ide_device(dev);
  50         return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_PROD]);
  51 }
  52 static DEVICE_ATTR_RO(model);
  53
  54 static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
  55                              char *buf)
  56 {
  57         ide_drive_t *drive = to_ide_device(dev);
  58         return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_FW_REV]);
  59 }
  60 static DEVICE_ATTR_RO(firmware);
  61
  62 static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
  63                            char *buf)
  64 {
  65         ide_drive_t *drive = to_ide_device(dev);
  66         return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_SERNO]);
  67 }
  68 static DEVICE_ATTR(serial, 0400, serial_show, NULL);
  69
  70 static DEVICE_ATTR(unload_heads, 0644, ide_park_show, ide_park_store);
  71
  72 static struct attribute *ide_attrs[] = {
  73         &dev_attr_media.attr,
  74         &dev_attr_drivename.attr,
  75         &dev_attr_modalias.attr,
  76         &dev_attr_model.attr,
  77         &dev_attr_firmware.attr,
  78         &dev_attr_serial.attr,
  79         &dev_attr_unload_heads.attr,
  80         NULL,
  81 };
  82
  83 static const struct attribute_group ide_attr_group = {
  84         .attrs = ide_attrs,
  85 };
  86
  87 const struct attribute_group *ide_dev_groups[] = {
  88         &ide_attr_group,
  89         NULL,
  90 };
  91
  92 static ssize_t store_delete_devices(struct device *portdev,
  93                                     struct device_attribute *attr,
  94                                     const char *buf, size_t n)
  95 {
  96         ide_hwif_t *hwif = dev_get_drvdata(portdev);
  97
  98         if (strncmp(buf, "1", n))
  99                 return -EINVAL;
 100
 101         ide_port_unregister_devices(hwif);
 102
 103         return n;
 104 };
 105
 106 static DEVICE_ATTR(delete_devices, S_IWUSR, NULL, store_delete_devices);
 107
 108 static ssize_t store_scan(struct device *portdev,
 109                           struct device_attribute *attr,
 110                           const char *buf, size_t n)
 111 {
 112         ide_hwif_t *hwif = dev_get_drvdata(portdev);
 113
 114         if (strncmp(buf, "1", n))
 115                 return -EINVAL;
 116
 117         ide_port_unregister_devices(hwif);
 118         ide_port_scan(hwif);
 119
 120         return n;
 121 };
 122
 123 static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
 124
 125 static struct device_attribute *ide_port_attrs[] = {
 126         &dev_attr_delete_devices,
 127         &dev_attr_scan,
 128         NULL
 129 };
 130
 131 int ide_sysfs_register_port(ide_hwif_t *hwif)
 132 {
 133         int i, uninitialized_var(rc);
 134
 135         for (i = 0; ide_port_attrs[i]; i++) {
 136                 rc = device_create_file(hwif->portdev, ide_port_attrs[i]);
 137                 if (rc)
 138                         break;
 139         }
 140
 141         return rc;
 142 }