[SCSI] mptfusion: Adding inline data padding support for TAPE drive.
Adding support for inline data padding for TAPE drive when running U320.
[jejb: whitespace fixes]
Signed-off-by: Kashyap Desai <kashyap.desai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index 6d9568d..8f61ba6 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -867,6 +867,10 @@
struct _x_config_parms cfg;
struct _CONFIG_PAGE_HEADER hdr;
int err = -EBUSY;
+ u32 nego_parms;
+ u32 period;
+ struct scsi_device *sdev;
+ int i;
/* don't allow updating nego parameters on RAID devices */
if (starget->channel == 0 &&
@@ -904,6 +908,24 @@
pg1->Header.PageNumber = hdr.PageNumber;
pg1->Header.PageType = hdr.PageType;
+ nego_parms = le32_to_cpu(pg1->RequestedParameters);
+ period = (nego_parms & MPI_SCSIDEVPAGE1_RP_MIN_SYNC_PERIOD_MASK) >>
+ MPI_SCSIDEVPAGE1_RP_SHIFT_MIN_SYNC_PERIOD;
+ if (period == 8) {
+ /* Turn on inline data padding for TAPE when running U320 */
+ for (i = 0 ; i < 16; i++) {
+ sdev = scsi_device_lookup_by_target(starget, i);
+ if (sdev && sdev->type == TYPE_TAPE) {
+ sdev_printk(KERN_DEBUG, sdev, MYIOC_s_FMT
+ "IDP:ON\n", ioc->name);
+ nego_parms |= MPI_SCSIDEVPAGE1_RP_IDP;
+ pg1->RequestedParameters =
+ cpu_to_le32(nego_parms);
+ break;
+ }
+ }
+ }
+
mptspi_print_write_nego(hd, starget, le32_to_cpu(pg1->RequestedParameters));
if (mpt_config(ioc, &cfg)) {