Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / ide / ide-sysfs.c

diff --git a/kernel/drivers/ide/ide-sysfs.c b/kernel/drivers/ide/ide-sysfs.c
new file mode 100644 (file)
index 0000000..84a6a9e
--- /dev/null
+++ b/kernel/drivers/ide/ide-sysfs.c
@@ -0,0 +1,142 @@
+#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 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);
+}
+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));
+}
+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]);
+}
+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]);
+}
+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]);
+}
+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;
+};
+
+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;
+}