scsi: use 64-bit LUNs

The SCSI standard defines 64-bit values for LUNs, and large arrays
employing large or hierarchical LUN numbers become more and more
common.

So update the linux SCSI stack to use 64-bit LUN numbers.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@infradead.org>
Reviewed-by: Ewan Milne <emilne@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

5 files changed, 18 insertions, 19 deletions

diff --git a/drivers/message/fusion/mptbase.h b/drivers/message/fusion/mptbase.h
index 76c05bc24cb7..f37ea6fdc6ae 100644
--- a/drivers/message/fusion/mptbase.h
+++ b/drivers/message/fusion/mptbase.h
@@ -405,7 +405,7 @@ typedef struct _VirtTarget {
 typedef struct _VirtDevice {
         VirtTarget              *vtarget;
         u8                       configured_lun;
-        int                      lun;
+        u64                      lun;
 } VirtDevice;
 
 /*
diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c
index 02a3eefd6931..bf2a2cef562b 100644
--- a/drivers/message/fusion/mptfc.c
+++ b/drivers/message/fusion/mptfc.c
@@ -204,7 +204,7 @@ mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
          || (loops > 0 && ioc->active == 0)) {
                 spin_unlock_irqrestore(shost->host_lock, flags);
                 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
-                        "mptfc_block_error_handler.%d: %d:%d, port status is "
+                        "mptfc_block_error_handler.%d: %d:%llu, port status is "
                         "%x, active flag %d, deferring %s recovery.\n",
                         ioc->name, ioc->sh->host_no,
                         SCpnt->device->id, SCpnt->device->lun,
@@ -218,7 +218,7 @@ mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
         if (ready == DID_NO_CONNECT || !SCpnt->device->hostdata
          || ioc->active == 0) {
                 dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
-                        "%s.%d: %d:%d, failing recovery, "
+                        "%s.%d: %d:%llu, failing recovery, "
                         "port state %x, active %d, vdevice %p.\n", caller,
                         ioc->name, ioc->sh->host_no,
                         SCpnt->device->id, SCpnt->device->lun, ready,
@@ -226,7 +226,7 @@ mptfc_block_error_handler(struct scsi_cmnd *SCpnt,
                 return FAILED;
         }
         dfcprintk (ioc, printk(MYIOC_s_DEBUG_FMT
-                "%s.%d: %d:%d, executing recovery.\n", caller,
+                "%s.%d: %d:%llu, executing recovery.\n", caller,
                 ioc->name, ioc->sh->host_no,
                 SCpnt->device->id, SCpnt->device->lun));
         return (*func)(SCpnt);
diff --git a/drivers/message/fusion/mptscsih.c b/drivers/message/fusion/mptscsih.c
index 2a1c6f21af27..39e566803089 100644
--- a/drivers/message/fusion/mptscsih.c
+++ b/drivers/message/fusion/mptscsih.c
@@ -95,7 +95,7 @@ static void	mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx);
 static void     mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply);
 
 int     mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id,
-                int lun, int ctx2abort, ulong timeout);
+                u64 lun, int ctx2abort, ulong timeout);
 
 int             mptscsih_ioc_reset(MPT_ADAPTER *ioc, int post_reset);
 int             mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
@@ -536,7 +536,7 @@ mptscsih_info_scsiio(MPT_ADAPTER *ioc, struct scsi_cmnd *sc, SCSIIOReply_t * pSc
         }
 
         scsi_print_command(sc);
-        printk(MYIOC_s_DEBUG_FMT "\tfw_channel = %d, fw_id = %d, lun = %d\n",
+        printk(MYIOC_s_DEBUG_FMT "\tfw_channel = %d, fw_id = %d, lun = %llu\n",
             ioc->name, pScsiReply->Bus, pScsiReply->TargetID, sc->device->lun);
         printk(MYIOC_s_DEBUG_FMT "\trequest_len = %d, underflow = %d, "
             "resid = %d\n", ioc->name, scsi_bufflen(sc), sc->underflow,
@@ -692,7 +692,7 @@ mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
                  */
                 if (scsi_state & MPI_SCSI_STATE_RESPONSE_INFO_VALID &&
                     pScsiReply->ResponseInfo) {
-                        printk(MYIOC_s_NOTE_FMT "[%d:%d:%d:%d] "
+                        printk(MYIOC_s_NOTE_FMT "[%d:%d:%d:%llu] "
                         "FCP_ResponseInfo=%08xh\n", ioc->name,
                         sc->device->host->host_no, sc->device->channel,
                         sc->device->id, sc->device->lun,
@@ -1155,7 +1155,7 @@ mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSI
                 return;
         ioc = hd->ioc;
         if (time - hd->last_queue_full > 10 * HZ) {
-                dprintk(ioc, printk(MYIOC_s_WARN_FMT "Device (%d:%d:%d) reported QUEUE_FULL!\n",
+                dprintk(ioc, printk(MYIOC_s_WARN_FMT "Device (%d:%d:%llu) reported QUEUE_FULL!\n",
                                 ioc->name, 0, sc->device->id, sc->device->lun));
                 hd->last_queue_full = time;
         }
@@ -1518,7 +1518,7 @@ mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx)
  *
  **/
 int
-mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun,
+mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, u64 lun,
         int ctx2abort, ulong timeout)
 {
         MPT_FRAME_HDR   *mf;
@@ -2380,7 +2380,7 @@ mptscsih_slave_configure(struct scsi_device *sdev)
         vdevice = sdev->hostdata;
 
         dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
-                "device @ %p, channel=%d, id=%d, lun=%d\n",
+                "device @ %p, channel=%d, id=%d, lun=%llu\n",
                 ioc->name, sdev, sdev->channel, sdev->id, sdev->lun));
         if (ioc->bus_type == SPI)
                 dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
@@ -2971,7 +2971,7 @@ mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *io)
                                            + (my_idx * MPT_SENSE_BUFFER_ALLOC));
 
         devtprintk(ioc, printk(MYIOC_s_DEBUG_FMT
-            "%s: Sending Command 0x%02x for fw_channel=%d fw_id=%d lun=%d\n",
+            "%s: Sending Command 0x%02x for fw_channel=%d fw_id=%d lun=%llu\n",
             ioc->name, __func__, cmd, io->channel, io->id, io->lun));
 
         if (dir == MPI_SCSIIO_CONTROL_READ)
diff --git a/drivers/message/fusion/mptscsih.h b/drivers/message/fusion/mptscsih.h
index 99e3390807f3..e1b1a198a62a 100644
--- a/drivers/message/fusion/mptscsih.h
+++ b/drivers/message/fusion/mptscsih.h
@@ -98,7 +98,7 @@ typedef struct _internal_cmd {
         u8              cmd;            /* SCSI Op Code */
         u8              channel;        /* bus number */
         u8              id;             /* SCSI ID (virtual) */
-        int             lun;
+        u64             lun;
         u8              flags;          /* Bit Field - See above */
         u8              physDiskNum;    /* Phys disk number, -1 else */
         u8              rsvd2;
@@ -115,7 +115,7 @@ extern int mptscsih_show_info(struct seq_file *, struct Scsi_Host *);
 extern const char * mptscsih_info(struct Scsi_Host *SChost);
 extern int mptscsih_qcmd(struct scsi_cmnd *SCpnt);
 extern int mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel,
-        u8 id, int lun, int ctx2abort, ulong timeout);
+        u8 id, u64 lun, int ctx2abort, ulong timeout);
 extern void mptscsih_slave_destroy(struct scsi_device *device);
 extern int mptscsih_slave_configure(struct scsi_device *device);
 extern int mptscsih_abort(struct scsi_cmnd * SCpnt);
diff --git a/drivers/message/i2o/i2o_scsi.c b/drivers/message/i2o/i2o_scsi.c
index 1d31d7284cbd..e7de92c67cf6 100644
--- a/drivers/message/i2o/i2o_scsi.c
+++ b/drivers/message/i2o/i2o_scsi.c
@@ -78,7 +78,7 @@ static unsigned int i2o_scsi_max_lun = 255;
 struct i2o_scsi_host {
         struct Scsi_Host *scsi_host;    /* pointer to the SCSI host */
         struct i2o_controller *iop;     /* pointer to the I2O controller */
-        unsigned int lun;       /* lun's used for block devices */
+        u64 lun;        /* lun's used for block devices */
         struct i2o_device *channel[0];  /* channel->i2o_dev mapping table */
 };
 
@@ -287,9 +287,8 @@ static int i2o_scsi_probe(struct device *dev)
         }
 
         if (le64_to_cpu(lun) >= scsi_host->max_lun) {
-                osm_warn("SCSI device lun (%lu) >= max_lun of I2O host (%d)",
-                         (long unsigned int)le64_to_cpu(lun),
-                         scsi_host->max_lun);
+                osm_warn("SCSI device lun (%llu) >= max_lun of I2O host (%d)",
+                         le64_to_cpu(lun), scsi_host->max_lun);
                 return -EFAULT;
         }
 
@@ -308,9 +307,9 @@ static int i2o_scsi_probe(struct device *dev)
         if (rc)
                 goto err;
 
-        osm_info("device added (TID: %03x) channel: %d, id: %d, lun: %ld\n",
+        osm_info("device added (TID: %03x) channel: %d, id: %d, lun: %llu\n",
                  i2o_dev->lct_data.tid, channel, le32_to_cpu(id),
-                 (long unsigned int)le64_to_cpu(lun));
+                 le64_to_cpu(lun));
 
         return 0;