[SCSI] aic79xx: add hold_mcs to the transport parameters

since this card can support the setting, add it to the parameter list.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 10a2570..982a74a 100644 (file)
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -1628,7 +1628,8 @@ ahd_send_async(struct ahd_softc *ahd, char channel,
                        + (spi_rd_strm(starget) ? MSG_EXT_PPR_RD_STRM : 0)
                        + (spi_pcomp_en(starget) ? MSG_EXT_PPR_PCOMP_EN : 0)
                        + (spi_rti(starget) ? MSG_EXT_PPR_RTI : 0)
-                       + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0);
+                       + (spi_wr_flow(starget) ? MSG_EXT_PPR_WR_FLOW : 0)
+                       + (spi_hold_mcs(starget) ? MSG_EXT_PPR_HOLD_MCS : 0);
 
                if (tinfo->curr.period == spi_period(starget)
                    && tinfo->curr.width == spi_width(starget)
@@ -1647,6 +1648,7 @@ ahd_send_async(struct ahd_softc *ahd, char channel,
                spi_pcomp_en(starget) =  tinfo->curr.ppr_options & MSG_EXT_PPR_PCOMP_EN ? 1 : 0;
                spi_rti(starget) =  tinfo->curr.ppr_options &  MSG_EXT_PPR_RTI ? 1 : 0;
                spi_wr_flow(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_WR_FLOW ? 1 : 0;
+               spi_hold_mcs(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_HOLD_MCS ? 1 : 0;
                spi_display_xfer_agreement(starget);
                break;
        }
@@ -2697,6 +2699,38 @@ static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
        ahd_unlock(ahd, &flags);
 }
 
+static void ahd_linux_set_hold_mcs(struct scsi_target *starget, int hold)
+{
+       struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
+       struct ahd_softc *ahd = *((struct ahd_softc **)shost->hostdata);
+       struct ahd_tmode_tstate *tstate;
+       struct ahd_initiator_tinfo *tinfo 
+               = ahd_fetch_transinfo(ahd,
+                                     starget->channel + 'A',
+                                     shost->this_id, starget->id, &tstate);
+       struct ahd_devinfo devinfo;
+       unsigned int ppr_options = tinfo->goal.ppr_options
+               & ~MSG_EXT_PPR_HOLD_MCS;
+       unsigned int period = tinfo->goal.period;
+       unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+       unsigned long flags;
+
+       if (hold)
+               ppr_options |= MSG_EXT_PPR_HOLD_MCS;
+
+       ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
+                           starget->channel + 'A', ROLE_INITIATOR);
+       ahd_find_syncrate(ahd, &period, &ppr_options,
+                         dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+       ahd_lock(ahd, &flags);
+       ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+                        ppr_options, AHD_TRANS_GOAL, FALSE);
+       ahd_unlock(ahd, &flags);
+}
+
+
+
 static struct spi_function_template ahd_linux_transport_functions = {
        .set_offset     = ahd_linux_set_offset,
        .show_offset    = 1,
@@ -2718,6 +2752,8 @@ static struct spi_function_template ahd_linux_transport_functions = {
        .show_rti       = 1,
        .set_pcomp_en   = ahd_linux_set_pcomp_en,
        .show_pcomp_en  = 1,
+       .set_hold_mcs   = ahd_linux_set_hold_mcs,
+       .show_hold_mcs  = 1,
 };