[SCSI] aic79xx: DV parameter settings

This patch updates various scsi_transport_spi parameters with the actual
parameters used by the driver internally.
Domain Validation for all devices should now work properly.

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

1 files changed, 218 insertions, 13 deletions

diff --git a/drivers/scsi/aic7xxx/aic79xx_osm.c b/drivers/scsi/aic7xxx/aic79xx_osm.c
index 70997ca28baa..cf8e0ca830a2 100644
--- a/drivers/scsi/aic7xxx/aic79xx_osm.c
+++ b/drivers/scsi/aic7xxx/aic79xx_osm.c
@@ -1636,9 +1636,9 @@ ahd_send_async(struct ahd_softc *ahd, char channel,
                 spi_period(starget) = tinfo->curr.period;
                 spi_width(starget) = tinfo->curr.width;
                 spi_offset(starget) = tinfo->curr.offset;
-                spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ;
-                spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ;
-                spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ;
+                spi_dt(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_DT_REQ ? 1 : 0;
+                spi_qas(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_QAS_REQ ? 1 : 0;
+                spi_iu(starget) = tinfo->curr.ppr_options & MSG_EXT_PPR_IU_REQ ? 1 : 0;
                 spi_display_xfer_agreement(starget);
                 break;
         }
@@ -2318,6 +2318,18 @@ done:
 
 static void ahd_linux_exit(void);
 
+static void ahd_linux_set_xferflags(struct scsi_target *starget, unsigned int ppr_options, unsigned int period)
+{
+        spi_qas(starget) = (ppr_options & MSG_EXT_PPR_QAS_REQ)? 1 : 0;
+        spi_dt(starget) = (ppr_options & MSG_EXT_PPR_DT_REQ)? 1 : 0;
+        spi_iu(starget) = (ppr_options & MSG_EXT_PPR_IU_REQ) ? 1 : 0;
+        spi_rd_strm(starget) = (ppr_options & MSG_EXT_PPR_RD_STRM) ? 1 : 0;
+        spi_wr_flow(starget) = (ppr_options & MSG_EXT_PPR_WR_FLOW) ? 1 : 0;
+        spi_pcomp_en(starget) = (ppr_options & MSG_EXT_PPR_PCOMP_EN) ? 1 : 0;
+        spi_rti(starget) = (ppr_options & MSG_EXT_PPR_RTI) ? 1 : 0;
+        spi_period(starget) = period;
+}
+
 static void ahd_linux_set_width(struct scsi_target *starget, int width)
 {
         struct Scsi_Host *shost = dev_to_shost(starget->dev.parent);
@@ -2343,9 +2355,14 @@ static void ahd_linux_set_period(struct scsi_target *starget, int period)
                                       shost->this_id, starget->id, &tstate);
         struct ahd_devinfo devinfo;
         unsigned int ppr_options = tinfo->goal.ppr_options;
+        unsigned int dt;
         unsigned long flags;
         unsigned long offset = tinfo->goal.offset;
 
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: set period to %d\n", ahd_name(ahd), period);
+#endif
         if (offset == 0)
                 offset = MAX_OFFSET;
 
@@ -2357,6 +2374,8 @@ static void ahd_linux_set_period(struct scsi_target *starget, int period)
                         ppr_options |= MSG_EXT_PPR_IU_REQ;
         }
 
+        dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+
         ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
                             starget->channel + 'A', ROLE_INITIATOR);
 
@@ -2366,7 +2385,11 @@ static void ahd_linux_set_period(struct scsi_target *starget, int period)
                         ppr_options &= MSG_EXT_PPR_QAS_REQ;
         }
 
-        ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX);
+        ahd_find_syncrate(ahd, &period, &ppr_options,
+                          dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+        ahd_linux_set_xferflags(starget, ppr_options, period);
+
         ahd_lock(ahd, &flags);
         ahd_set_syncrate(ahd, &devinfo, period, offset,
                          ppr_options, AHD_TRANS_GOAL, FALSE);
@@ -2385,15 +2408,24 @@ static void ahd_linux_set_offset(struct scsi_target *starget, int offset)
         struct ahd_devinfo devinfo;
         unsigned int ppr_options = 0;
         unsigned int period = 0;
+        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
         unsigned long flags;
 
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: set offset to %d\n", ahd_name(ahd), offset);
+#endif
+
         ahd_compile_devinfo(&devinfo, shost->this_id, starget->id, 0,
                             starget->channel + 'A', ROLE_INITIATOR);
         if (offset != 0) {
                 period = tinfo->goal.period;
                 ppr_options = tinfo->goal.ppr_options;
-                ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX);
+                ahd_find_syncrate(ahd, &period, &ppr_options, 
+                                  dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
         }
+        ahd_linux_set_xferflags(starget, ppr_options, period);
+
         ahd_lock(ahd, &flags);
         ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
                          AHD_TRANS_GOAL, FALSE);
@@ -2415,17 +2447,28 @@ static void ahd_linux_set_dt(struct scsi_target *starget, int dt)
         unsigned int period = tinfo->goal.period;
         unsigned long flags;
 
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: %s DT\n", ahd_name(ahd), 
+                       dt ? "enabling" : "disabling");
+#endif
         if (dt) {
                 ppr_options |= MSG_EXT_PPR_DT_REQ;
                 if (period > 9)
                         period = 9; /* at least 12.5ns for DT */
-        } else if (period <= 9)
-                period = 10; /* If resetting DT, period must be >= 25ns */
-
+        } else {
+                if (period <= 9)
+                        period = 10; /* If resetting DT, period must be >= 25ns */
+                /* IU is invalid without DT set */
+                ppr_options &= ~MSG_EXT_PPR_IU_REQ;
+        }
         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_linux_set_xferflags(starget, ppr_options, period);
+
         ahd_lock(ahd, &flags);
         ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
                          ppr_options, AHD_TRANS_GOAL, FALSE);
@@ -2445,16 +2488,28 @@ static void ahd_linux_set_qas(struct scsi_target *starget, int qas)
         unsigned int ppr_options = tinfo->goal.ppr_options
                 & ~MSG_EXT_PPR_QAS_REQ;
         unsigned int period = tinfo->goal.period;
-        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+        unsigned int dt;
         unsigned long flags;
 
-        if (qas)
-                ppr_options |= MSG_EXT_PPR_QAS_REQ;
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: %s QAS\n", ahd_name(ahd), 
+                       qas ? "enabling" : "disabling");
+#endif
+
+        if (qas) {
+                ppr_options |= MSG_EXT_PPR_QAS_REQ; 
+        }
+
+        dt = ppr_options & MSG_EXT_PPR_DT_REQ;
 
         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);
+
+        spi_qas(starget) = (ppr_options & MSG_EXT_PPR_QAS_REQ)? 1 : 0;
+
         ahd_lock(ahd, &flags);
         ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
                          ppr_options, AHD_TRANS_GOAL, FALSE);
@@ -2474,16 +2529,29 @@ static void ahd_linux_set_iu(struct scsi_target *starget, int iu)
         unsigned int ppr_options = tinfo->goal.ppr_options
                 & ~MSG_EXT_PPR_IU_REQ;
         unsigned int period = tinfo->goal.period;
-        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+        unsigned int dt;
         unsigned long flags;
 
-        if (iu)
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: %s IU\n", ahd_name(ahd),
+                       iu ? "enabling" : "disabling");
+#endif
+
+        if (iu) {
                 ppr_options |= MSG_EXT_PPR_IU_REQ;
+                ppr_options |= MSG_EXT_PPR_DT_REQ; /* IU requires DT */
+        }
+
+        dt = ppr_options & MSG_EXT_PPR_DT_REQ;
 
         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_linux_set_xferflags(starget, ppr_options, period);
+
         ahd_lock(ahd, &flags);
         ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
                          ppr_options, AHD_TRANS_GOAL, FALSE);
@@ -2506,6 +2574,12 @@ static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
         unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
         unsigned long flags;
 
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: %s Read Streaming\n", ahd_name(ahd), 
+                       rdstrm  ? "enabling" : "disabling");
+#endif
+
         if (rdstrm)
                 ppr_options |= MSG_EXT_PPR_RD_STRM;
 
@@ -2513,6 +2587,131 @@ static void ahd_linux_set_rd_strm(struct scsi_target *starget, int rdstrm)
                             starget->channel + 'A', ROLE_INITIATOR);
         ahd_find_syncrate(ahd, &period, &ppr_options,
                           dt ? AHD_SYNCRATE_MAX : AHD_SYNCRATE_ULTRA2);
+
+        spi_rd_strm(starget) = (ppr_options & MSG_EXT_PPR_RD_STRM) ? 1 : 0;
+
+        ahd_lock(ahd, &flags);
+        ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+                         ppr_options, AHD_TRANS_GOAL, FALSE);
+        ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_set_wr_flow(struct scsi_target *starget, int wrflow)
+{
+        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_WR_FLOW;
+        unsigned int period = tinfo->goal.period;
+        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+        unsigned long flags;
+
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: %s Write Flow Control\n", ahd_name(ahd),
+                       wrflow ? "enabling" : "disabling");
+#endif
+
+        if (wrflow)
+                ppr_options |= MSG_EXT_PPR_WR_FLOW;
+
+        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);
+
+        spi_wr_flow(starget) = (ppr_options & MSG_EXT_PPR_WR_FLOW) ? 1 : 0;
+
+        ahd_lock(ahd, &flags);
+        ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+                         ppr_options, AHD_TRANS_GOAL, FALSE);
+        ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_set_rti(struct scsi_target *starget, int rti)
+{
+        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_RTI;
+        unsigned int period = tinfo->goal.period;
+        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+        unsigned long flags;
+
+        if ((ahd->features & AHD_RTI) == 0) {
+#ifdef AHD_DEBUG
+                if ((ahd_debug & AHD_SHOW_DV) != 0)
+                        printf("%s: RTI not available\n", ahd_name(ahd));
+#endif
+                return;
+        }
+
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: %s RTI\n", ahd_name(ahd),
+                       rti ? "enabling" : "disabling");
+#endif
+
+        if (rti)
+                ppr_options |= MSG_EXT_PPR_RTI;
+
+        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);
+
+        spi_rti(starget) = (ppr_options & MSG_EXT_PPR_RTI) ? 1 : 0;
+
+        ahd_lock(ahd, &flags);
+        ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
+                         ppr_options, AHD_TRANS_GOAL, FALSE);
+        ahd_unlock(ahd, &flags);
+}
+
+static void ahd_linux_set_pcomp_en(struct scsi_target *starget, int pcomp)
+{
+        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_PCOMP_EN;
+        unsigned int period = tinfo->goal.period;
+        unsigned int dt = ppr_options & MSG_EXT_PPR_DT_REQ;
+        unsigned long flags;
+
+#ifdef AHD_DEBUG
+        if ((ahd_debug & AHD_SHOW_DV) != 0)
+                printf("%s: %s Precompensation\n", ahd_name(ahd), 
+                       pcomp ? "Enable" : "Disable");
+#endif
+
+        if (pcomp)
+                ppr_options |= MSG_EXT_PPR_PCOMP_EN;
+
+        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);
+
+        spi_pcomp_en(starget) = (ppr_options & MSG_EXT_PPR_PCOMP_EN) ? 1 : 0;
+
         ahd_lock(ahd, &flags);
         ahd_set_syncrate(ahd, &devinfo, period, tinfo->goal.offset,
                          ppr_options, AHD_TRANS_GOAL, FALSE);
@@ -2534,6 +2733,12 @@ static struct spi_function_template ahd_linux_transport_functions = {
         .show_qas       = 1,
         .set_rd_strm    = ahd_linux_set_rd_strm,
         .show_rd_strm   = 1,
+        .set_wr_flow    = ahd_linux_set_wr_flow,
+        .show_wr_flow   = 1,
+        .set_rti        = ahd_linux_set_rti,
+        .show_rti       = 1,
+        .set_pcomp_en   = ahd_linux_set_pcomp_en,
+        .show_pcomp_en  = 1,
 };