[SCSI] aic7xxx: Remove slave_destroy

This is a cross-port from aic79xx; we still hit the occasional
BUG_ON in slave_destroy. And again we don't really need the
slave_destroy callback nor the ahc_linux_target structure
at all.

Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

5 files changed, 31 insertions, 78 deletions

diff --git a/drivers/scsi/aic7xxx/aic7xxx.h b/drivers/scsi/aic7xxx/aic7xxx.h
index 5802f33324c..954c7c24501 100644
--- a/drivers/scsi/aic7xxx/aic7xxx.h
+++ b/drivers/scsi/aic7xxx/aic7xxx.h
@@ -1279,6 +1279,7 @@ typedef enum {
 } ahc_queue_alg;
 
 void                    ahc_set_tags(struct ahc_softc *ahc,
+                                     struct scsi_cmnd *cmd,
                                      struct ahc_devinfo *devinfo,
                                      ahc_queue_alg alg);
 
diff --git a/drivers/scsi/aic7xxx/aic7xxx_core.c b/drivers/scsi/aic7xxx/aic7xxx_core.c
index 46bd7bc2fa4..50ef785224d 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_core.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_core.c
@@ -1986,7 +1986,7 @@ ahc_set_syncrate(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
                 tinfo->curr.ppr_options = ppr_options;
 
                 ahc_send_async(ahc, devinfo->channel, devinfo->target,
-                               CAM_LUN_WILDCARD, AC_TRANSFER_NEG, NULL);
+                               CAM_LUN_WILDCARD, AC_TRANSFER_NEG);
                 if (bootverbose) {
                         if (offset != 0) {
                                 printf("%s: target %d synchronous at %sMHz%s, "
@@ -2056,7 +2056,7 @@ ahc_set_width(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
                 tinfo->curr.width = width;
 
                 ahc_send_async(ahc, devinfo->channel, devinfo->target,
-                               CAM_LUN_WILDCARD, AC_TRANSFER_NEG, NULL);
+                               CAM_LUN_WILDCARD, AC_TRANSFER_NEG);
                 if (bootverbose) {
                         printf("%s: target %d using %dbit transfers\n",
                                ahc_name(ahc), devinfo->target,
@@ -2074,12 +2074,14 @@ ahc_set_width(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
  * Update the current state of tagged queuing for a given target.
  */
 void
-ahc_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
-             ahc_queue_alg alg)
+ahc_set_tags(struct ahc_softc *ahc, struct scsi_cmnd *cmd,
+             struct ahc_devinfo *devinfo, ahc_queue_alg alg)
 {
-        ahc_platform_set_tags(ahc, devinfo, alg);
+        struct scsi_device *sdev = cmd->device;
+
+        ahc_platform_set_tags(ahc, sdev, devinfo, alg);
         ahc_send_async(ahc, devinfo->channel, devinfo->target,
-                       devinfo->lun, AC_TRANSFER_NEG, &alg);
+                       devinfo->lun, AC_TRANSFER_NEG);
 }
 
 /*
@@ -3489,7 +3491,7 @@ ahc_handle_msg_reject(struct ahc_softc *ahc, struct ahc_devinfo *devinfo)
                         printf("(%s:%c:%d:%d): refuses tagged commands.  "
                                "Performing non-tagged I/O\n", ahc_name(ahc),
                                devinfo->channel, devinfo->target, devinfo->lun);
-                        ahc_set_tags(ahc, devinfo, AHC_QUEUE_NONE);
+                        ahc_set_tags(ahc, scb->io_ctx, devinfo, AHC_QUEUE_NONE);
                         mask = ~0x23;
                 } else {
                         printf("(%s:%c:%d:%d): refuses %s tagged commands.  "
@@ -3497,7 +3499,7 @@ ahc_handle_msg_reject(struct ahc_softc *ahc, struct ahc_devinfo *devinfo)
                                ahc_name(ahc), devinfo->channel, devinfo->target,
                                devinfo->lun, tag_type == MSG_ORDERED_TASK
                                ? "ordered" : "head of queue");
-                        ahc_set_tags(ahc, devinfo, AHC_QUEUE_BASIC);
+                        ahc_set_tags(ahc, scb->io_ctx, devinfo, AHC_QUEUE_BASIC);
                         mask = ~0x03;
                 }
 
@@ -3763,7 +3765,7 @@ ahc_handle_devreset(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
         
         if (status != CAM_SEL_TIMEOUT)
                 ahc_send_async(ahc, devinfo->channel, devinfo->target,
-                               CAM_LUN_WILDCARD, AC_SENT_BDR, NULL);
+                               CAM_LUN_WILDCARD, AC_SENT_BDR);
 
         if (message != NULL
          && (verbose_level <= bootverbose))
@@ -6018,7 +6020,7 @@ ahc_reset_channel(struct ahc_softc *ahc, char channel, int initiate_reset)
 #endif
         /* Notify the XPT that a bus reset occurred */
         ahc_send_async(ahc, devinfo.channel, CAM_TARGET_WILDCARD,
-                       CAM_LUN_WILDCARD, AC_BUS_RESET, NULL);
+                       CAM_LUN_WILDCARD, AC_BUS_RESET);
 
         /*
          * Revert to async/narrow transfers until we renegotiate.
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.c b/drivers/scsi/aic7xxx/aic7xxx_osm.c
index ed85057152d..660f26e23a3 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.c
@@ -512,7 +512,6 @@ ahc_linux_target_alloc(struct scsi_target *starget)
         struct seeprom_config *sc = ahc->seep_config;
         unsigned long flags;
         struct scsi_target **ahc_targp = ahc_linux_target_in_softc(starget);
-        struct ahc_linux_target *targ = scsi_transport_target_data(starget);
         unsigned short scsirate;
         struct ahc_devinfo devinfo;
         struct ahc_initiator_tinfo *tinfo;
@@ -533,7 +532,6 @@ ahc_linux_target_alloc(struct scsi_target *starget)
         BUG_ON(*ahc_targp != NULL);
 
         *ahc_targp = starget;
-        memset(targ, 0, sizeof(*targ));
 
         if (sc) {
                 int maxsync = AHC_SYNCRATE_DT;
@@ -594,14 +592,11 @@ ahc_linux_slave_alloc(struct scsi_device *sdev)
         struct  ahc_softc *ahc =
                 *((struct ahc_softc **)sdev->host->hostdata);
         struct scsi_target *starget = sdev->sdev_target;
-        struct ahc_linux_target *targ = scsi_transport_target_data(starget);
         struct ahc_linux_device *dev;
 
         if (bootverbose)
                 printf("%s: Slave Alloc %d\n", ahc_name(ahc), sdev->id);
 
-        BUG_ON(targ->sdev[sdev->lun] != NULL);
-
         dev = scsi_transport_device_data(sdev);
         memset(dev, 0, sizeof(*dev));
 
@@ -618,8 +613,6 @@ ahc_linux_slave_alloc(struct scsi_device *sdev)
          */
         dev->maxtags = 0;
         
-        targ->sdev[sdev->lun] = sdev;
-
         spi_period(starget) = 0;
 
         return 0;
@@ -644,22 +637,6 @@ ahc_linux_slave_configure(struct scsi_device *sdev)
         return 0;
 }
 
-static void
-ahc_linux_slave_destroy(struct scsi_device *sdev)
-{
-        struct  ahc_softc *ahc;
-        struct  ahc_linux_device *dev = scsi_transport_device_data(sdev);
-        struct  ahc_linux_target *targ = scsi_transport_target_data(sdev->sdev_target);
-
-        ahc = *((struct ahc_softc **)sdev->host->hostdata);
-        if (bootverbose)
-                printf("%s: Slave Destroy %d\n", ahc_name(ahc), sdev->id);
-
-        BUG_ON(dev->active);
-
-        targ->sdev[sdev->lun] = NULL;
-}
-
 #if defined(__i386__)
 /*
  * Return the disk geometry for the given SCSI device.
@@ -782,7 +759,6 @@ struct scsi_host_template aic7xxx_driver_template = {
         .use_clustering         = ENABLE_CLUSTERING,
         .slave_alloc            = ahc_linux_slave_alloc,
         .slave_configure        = ahc_linux_slave_configure,
-        .slave_destroy          = ahc_linux_slave_destroy,
         .target_alloc           = ahc_linux_target_alloc,
         .target_destroy         = ahc_linux_target_destroy,
 };
@@ -1204,21 +1180,13 @@ void
 ahc_platform_free(struct ahc_softc *ahc)
 {
         struct scsi_target *starget;
-        int i, j;
+        int i;
 
         if (ahc->platform_data != NULL) {
                 /* destroy all of the device and target objects */
                 for (i = 0; i < AHC_NUM_TARGETS; i++) {
                         starget = ahc->platform_data->starget[i];
                         if (starget != NULL) {
-                                for (j = 0; j < AHC_NUM_LUNS; j++) {
-                                        struct ahc_linux_target *targ =
-                                                scsi_transport_target_data(starget);
-
-                                        if (targ->sdev[j] == NULL)
-                                                continue;
-                                        targ->sdev[j] = NULL;
-                                }
                                 ahc->platform_data->starget[i] = NULL;
                         }
                 }
@@ -1252,24 +1220,13 @@ ahc_platform_freeze_devq(struct ahc_softc *ahc, struct scb *scb)
 }
 
 void
-ahc_platform_set_tags(struct ahc_softc *ahc, struct ahc_devinfo *devinfo,
-                      ahc_queue_alg alg)
+ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
+                      struct ahc_devinfo *devinfo, ahc_queue_alg alg)
 {
-        struct scsi_target *starget;
-        struct ahc_linux_target *targ;
         struct ahc_linux_device *dev;
-        struct scsi_device *sdev;
-        u_int target_offset;
         int was_queuing;
         int now_queuing;
 
-        target_offset = devinfo->target;
-        if (devinfo->channel != 'A')
-                target_offset += 8;
-        starget = ahc->platform_data->starget[target_offset];
-        targ = scsi_transport_target_data(starget);
-        BUG_ON(targ == NULL);
-        sdev = targ->sdev[devinfo->lun];
         if (sdev == NULL)
                 return;
         dev = scsi_transport_device_data(sdev);
@@ -1402,11 +1359,15 @@ ahc_linux_device_queue_depth(struct scsi_device *sdev)
         tags = ahc_linux_user_tagdepth(ahc, &devinfo);
         if (tags != 0 && sdev->tagged_supported != 0) {
 
-                ahc_set_tags(ahc, &devinfo, AHC_QUEUE_TAGGED);
+                ahc_platform_set_tags(ahc, sdev, &devinfo, AHC_QUEUE_TAGGED);
+                ahc_send_async(ahc, devinfo.channel, devinfo.target,
+                               devinfo.lun, AC_TRANSFER_NEG);
                 ahc_print_devinfo(ahc, &devinfo);
                 printf("Tagged Queuing enabled.  Depth %d\n", tags);
         } else {
-                ahc_set_tags(ahc, &devinfo, AHC_QUEUE_NONE);
+                ahc_platform_set_tags(ahc, sdev, &devinfo, AHC_QUEUE_NONE);
+                ahc_send_async(ahc, devinfo.channel, devinfo.target,
+                               devinfo.lun, AC_TRANSFER_NEG);
         }
 }
 
@@ -1630,7 +1591,7 @@ ahc_platform_flushwork(struct ahc_softc *ahc)
 
 void
 ahc_send_async(struct ahc_softc *ahc, char channel,
-               u_int target, u_int lun, ac_code code, void *arg)
+               u_int target, u_int lun, ac_code code)
 {
         switch (code) {
         case AC_TRANSFER_NEG:
@@ -1947,7 +1908,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
                         }
                         ahc_set_transaction_status(scb, CAM_REQUEUE_REQ);
                         ahc_set_scsi_status(scb, SCSI_STATUS_OK);
-                        ahc_platform_set_tags(ahc, &devinfo,
+                        ahc_platform_set_tags(ahc, sdev, &devinfo,
                                      (dev->flags & AHC_DEV_Q_BASIC)
                                    ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
                         break;
@@ -1958,7 +1919,7 @@ ahc_linux_handle_scsi_status(struct ahc_softc *ahc,
                  */
                 dev->openings = 1;
                 ahc_set_scsi_status(scb, SCSI_STATUS_BUSY);
-                ahc_platform_set_tags(ahc, &devinfo,
+                ahc_platform_set_tags(ahc, sdev, &devinfo,
                              (dev->flags & AHC_DEV_Q_BASIC)
                            ? AHC_QUEUE_BASIC : AHC_QUEUE_TAGGED);
                 break;
@@ -2600,8 +2561,6 @@ ahc_linux_init(void)
         if (!ahc_linux_transport_template)
                 return -ENODEV;
 
-        scsi_transport_reserve_target(ahc_linux_transport_template,
-                                      sizeof(struct ahc_linux_target));
         scsi_transport_reserve_device(ahc_linux_transport_template,
                                       sizeof(struct ahc_linux_device));
 
diff --git a/drivers/scsi/aic7xxx/aic7xxx_osm.h b/drivers/scsi/aic7xxx/aic7xxx_osm.h
index a36b33868e0..85ae5d836fa 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_osm.h
+++ b/drivers/scsi/aic7xxx/aic7xxx_osm.h
@@ -256,7 +256,6 @@ typedef enum {
         AHC_DEV_PERIODIC_OTAG    = 0x40, /* Send OTAG to prevent starvation */
 } ahc_linux_dev_flags;
 
-struct ahc_linux_target;
 struct ahc_linux_device {
         /*
          * The number of transactions currently
@@ -329,12 +328,6 @@ struct ahc_linux_device {
 #define AHC_OTAG_THRESH 500
 };
 
-struct ahc_linux_target {
-        struct scsi_device       *sdev[AHC_NUM_LUNS];
-        struct ahc_transinfo      last_tinfo;
-        struct ahc_softc         *ahc;
-};
-
 /********************* Definitions Required by the Core ***********************/
 /*
  * Number of SG segments we require.  So long as the S/G segments for
@@ -822,7 +815,7 @@ ahc_freeze_scb(struct scb *scb)
         }
 }
 
-void    ahc_platform_set_tags(struct ahc_softc *ahc,
+void    ahc_platform_set_tags(struct ahc_softc *ahc, struct scsi_device *sdev,
                               struct ahc_devinfo *devinfo, ahc_queue_alg);
 int     ahc_platform_abort_scbs(struct ahc_softc *ahc, int target,
                                 char channel, int lun, u_int tag,
@@ -832,7 +825,7 @@ irqreturn_t
 void    ahc_platform_flushwork(struct ahc_softc *ahc);
 void    ahc_done(struct ahc_softc*, struct scb*);
 void    ahc_send_async(struct ahc_softc *, char channel,
-                       u_int target, u_int lun, ac_code, void *);
+                       u_int target, u_int lun, ac_code);
 void    ahc_print_path(struct ahc_softc *, struct scb *);
 void    ahc_platform_dump_card_state(struct ahc_softc *ahc);
 
diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
index 5914b4aa4a8..99e5443e753 100644
--- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -182,7 +182,6 @@ ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
                       u_int our_id, char channel, u_int target_id,
                       u_int target_offset)
 {
-        struct  ahc_linux_target *targ;
         struct  scsi_target *starget;
         struct  ahc_initiator_tinfo *tinfo;
         struct  ahc_tmode_tstate *tstate;
@@ -198,7 +197,6 @@ ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
         starget = ahc->platform_data->starget[target_offset];
         if (!starget)
                 return;
-        targ = scsi_transport_target_data(starget);
 
         copy_info(info, "\tGoal: ");
         ahc_format_transinfo(info, &tinfo->goal);
@@ -208,7 +206,7 @@ ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
         for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
                 struct scsi_device *sdev;
 
-                sdev = targ->sdev[lun];
+                sdev = scsi_device_lookup_by_target(starget, lun);
 
                 if (sdev == NULL)
                         continue;
@@ -383,11 +381,11 @@ ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
         }
         copy_info(&info, "\n");
 
-        max_targ = 15;
+        max_targ = 16;
         if ((ahc->features & (AHC_WIDE|AHC_TWIN)) == 0)
-                max_targ = 7;
+                max_targ = 8;
 
-        for (i = 0; i <= max_targ; i++) {
+        for (i = 0; i < max_targ; i++) {
                 u_int our_id;
                 u_int target_id;
                 char channel;