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[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>
This commit is contained in:
Kashyap, Desai 2011-04-26 12:09:46 +05:30 committed by James Bottomley
parent 56cee8d577
commit 19fff154e7
1 changed files with 22 additions and 0 deletions
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22
drivers/message/fusion/mptspi.c
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@ -867,6 +867,10 @@ static int mptspi_write_spi_device_pg1(struct scsi_target *starget,
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 @@ static int mptspi_write_spi_device_pg1(struct scsi_target *starget,
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)) {