release/src-rt-6.x.4708/linux/linux-2.6.36/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
  29 static ssize_t drivename_show(struct device *dev, struct device_attribute *attr,
  30                               char *buf)
  31 {
  32         ide_drive_t *drive = to_ide_device(dev);
  33         return sprintf(buf, "%s\n", drive->name);
  34 }
  35
  36 static ssize_t modalias_show(struct device *dev, struct device_attribute *attr,
  37                              char *buf)
  38 {
  39         ide_drive_t *drive = to_ide_device(dev);
  40         return sprintf(buf, "ide:m-%s\n", ide_media_string(drive));
  41 }
  42
  43 static ssize_t model_show(struct device *dev, struct device_attribute *attr,
  44                           char *buf)
  45 {
  46         ide_drive_t *drive = to_ide_device(dev);
  47         return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_PROD]);
  48 }
  49
  50 static ssize_t firmware_show(struct device *dev, struct device_attribute *attr,
  51                              char *buf)
  52 {
  53         ide_drive_t *drive = to_ide_device(dev);
  54         return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_FW_REV]);
  55 }
  56
  57 static ssize_t serial_show(struct device *dev, struct device_attribute *attr,
  58                            char *buf)
  59 {
  60         ide_drive_t *drive = to_ide_device(dev);
  61         return sprintf(buf, "%s\n", (char *)&drive->id[ATA_ID_SERNO]);
  62 }
  63
  64 struct device_attribute ide_dev_attrs[] = {
  65         __ATTR_RO(media),
  66         __ATTR_RO(drivename),
  67         __ATTR_RO(modalias),
  68         __ATTR_RO(model),
  69         __ATTR_RO(firmware),
  70         __ATTR(serial, 0400, serial_show, NULL),
  71         __ATTR(unload_heads, 0644, ide_park_show, ide_park_store),
  72         __ATTR_NULL
  73 };
  74
  75 static ssize_t store_delete_devices(struct device *portdev,
  76                                     struct device_attribute *attr,
  77                                     const char *buf, size_t n)
  78 {
  79         ide_hwif_t *hwif = dev_get_drvdata(portdev);
  80
  81         if (strncmp(buf, "1", n))
  82                 return -EINVAL;
  83
  84         ide_port_unregister_devices(hwif);
  85
  86         return n;
  87 };
  88
  89 static DEVICE_ATTR(delete_devices, S_IWUSR, NULL, store_delete_devices);
  90
  91 static ssize_t store_scan(struct device *portdev,
  92                           struct device_attribute *attr,
  93                           const char *buf, size_t n)
  94 {
  95         ide_hwif_t *hwif = dev_get_drvdata(portdev);
  96
  97         if (strncmp(buf, "1", n))
  98                 return -EINVAL;
  99
 100         ide_port_unregister_devices(hwif);
 101         ide_port_scan(hwif);
 102
 103         return n;
 104 };
 105
 106 static DEVICE_ATTR(scan, S_IWUSR, NULL, store_scan);
 107
 108 static struct device_attribute *ide_port_attrs[] = {
 109         &dev_attr_delete_devices,
 110         &dev_attr_scan,
 111         NULL
 112 };
 113
 114 int ide_sysfs_register_port(ide_hwif_t *hwif)
 115 {
 116         int i, uninitialized_var(rc);
 117
 118         for (i = 0; ide_port_attrs[i]; i++) {
 119                 rc = device_create_file(hwif->portdev, ide_port_attrs[i]);
 120                 if (rc)
 121                         break;
 122         }
 123
 124         return rc;
 125 }