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authorKashyap, Desai <kashyap.desai@lsi.com>2011-04-26 12:09:46 +0530
committerJames Bottomley <James.Bottomley@suse.de>2011-05-01 11:57:50 -0500
commit19fff154e7ee35d1297eb27d7d41e6f8742101ec (patch)
treeff2e9ef250a2ae64ac8c8dc5632d5c77b6f4d467 /drivers
parent56cee8d57744ec5782e3a8722c1bc45951d2c037 (diff)
[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>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/message/fusion/mptspi.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/message/fusion/mptspi.c b/drivers/message/fusion/mptspi.c
index 6d9568d2ec59..8f61ba6aac23 100644
--- a/drivers/message/fusion/mptspi.c
+++ b/drivers/message/fusion/mptspi.c
@@ -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)) {