regulator: Fix check of unsigned return value and transmit errors in wm831x_gp_ldo_ge...

[safe/jmp/linux-2.6] / drivers / scsi / sd.h

diff --git a/drivers/scsi/sd.h b/drivers/scsi/sd.h
index 4f032d4..e374804 100644 (file)
--- a/drivers/scsi/sd.h
+++ b/drivers/scsi/sd.h
@@ -31,6 +31,17 @@
  */
 #define SD_BUF_SIZE            512
 
+/*
+ * Number of sectors at the end of the device to avoid multi-sector
+ * accesses to in the case of last_sector_bug
+ */
+#define SD_LAST_BUGGY_SECTORS  8
+
+enum {
+       SD_EXT_CDB_SIZE = 32,   /* Extended CDB size */
+       SD_MEMPOOL_SIZE = 2,    /* CDB pool size */
+};
+
 struct scsi_disk {
        struct scsi_driver *driver;     /* always &sd_template */
        struct scsi_device *device;
@@ -39,19 +50,79 @@ struct scsi_disk {
        unsigned int    openers;        /* protected by BKL for now, yuck */
        sector_t        capacity;       /* size in 512-byte sectors */
        u32             index;
+       unsigned short  hw_sector_size;
        u8              media_present;
        u8              write_prot;
+       u8              protection_type;/* Data Integrity Field */
        unsigned        previous_state : 1;
+       unsigned        ATO : 1;        /* state of disk ATO bit */
        unsigned        WCE : 1;        /* state of disk WCE bit */
        unsigned        RCD : 1;        /* state of disk RCD bit, unused */
        unsigned        DPOFUA : 1;     /* state of disk DPOFUA bit */
+       unsigned        first_scan : 1;
 };
 #define to_scsi_disk(obj) container_of(obj,struct scsi_disk,dev)
 
+static inline struct scsi_disk *scsi_disk(struct gendisk *disk)
+{
+       return container_of(disk->private_data, struct scsi_disk, driver);
+}
+
 #define sd_printk(prefix, sdsk, fmt, a...)                             \
         (sdsk)->disk ?                                                 \
        sdev_printk(prefix, (sdsk)->device, "[%s] " fmt,                \
                    (sdsk)->disk->disk_name, ##a) :                     \
        sdev_printk(prefix, (sdsk)->device, fmt, ##a)
 
+/*
+ * A DIF-capable target device can be formatted with different
+ * protection schemes.  Currently 0 through 3 are defined:
+ *
+ * Type 0 is regular (unprotected) I/O
+ *
+ * Type 1 defines the contents of the guard and reference tags
+ *
+ * Type 2 defines the contents of the guard and reference tags and
+ * uses 32-byte commands to seed the latter
+ *
+ * Type 3 defines the contents of the guard tag only
+ */
+
+enum sd_dif_target_protection_types {
+       SD_DIF_TYPE0_PROTECTION = 0x0,
+       SD_DIF_TYPE1_PROTECTION = 0x1,
+       SD_DIF_TYPE2_PROTECTION = 0x2,
+       SD_DIF_TYPE3_PROTECTION = 0x3,
+};
+
+/*
+ * Data Integrity Field tuple.
+ */
+struct sd_dif_tuple {
+       __be16 guard_tag;       /* Checksum */
+       __be16 app_tag;         /* Opaque storage */
+       __be32 ref_tag;         /* Target LBA or indirect LBA */
+};
+
+#ifdef CONFIG_BLK_DEV_INTEGRITY
+
+extern void sd_dif_config_host(struct scsi_disk *);
+extern int sd_dif_prepare(struct request *rq, sector_t, unsigned int);
+extern void sd_dif_complete(struct scsi_cmnd *, unsigned int);
+
+#else /* CONFIG_BLK_DEV_INTEGRITY */
+
+static inline void sd_dif_config_host(struct scsi_disk *disk)
+{
+}
+static inline int sd_dif_prepare(struct request *rq, sector_t s, unsigned int a)
+{
+       return 0;
+}
+static inline void sd_dif_complete(struct scsi_cmnd *cmd, unsigned int a)
+{
+}
+
+#endif /* CONFIG_BLK_DEV_INTEGRITY */
+
 #endif /* _SCSI_DISK_H */