From 19fff154e7ee35d1297eb27d7d41e6f8742101ec Mon Sep 17 00:00:00 2001 From: "Kashyap, Desai" Date: Tue, 26 Apr 2011 12:09:46 +0530 Subject: [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 Signed-off-by: James Bottomley --- drivers/message/fusion/mptspi.c | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) (limited to 'drivers/message') 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 @@ 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)) { -- cgit v1.1