Fedora kernel-2.6.17-1.2142_FC4 patched with stable patch-2.6.17.4-vs2.0.2-rc26.diff

[linux-2.6.git] / drivers / scsi / aic7xxx / aic7xxx_proc.c

diff --git a/drivers/scsi/aic7xxx/aic7xxx_proc.c b/drivers/scsi/aic7xxx/aic7xxx_proc.c
index 5fece85..04a3506 100644 (file)
--- a/drivers/scsi/aic7xxx/aic7xxx_proc.c
+++ b/drivers/scsi/aic7xxx/aic7xxx_proc.c
@@ -50,10 +50,53 @@ static void ahc_dump_target_state(struct ahc_softc *ahc,
                                      u_int our_id, char channel,
                                      u_int target_id, u_int target_offset);
 static void    ahc_dump_device_state(struct info_str *info,
-                                     struct ahc_linux_device *dev);
+                                     struct scsi_device *dev);
 static int     ahc_proc_write_seeprom(struct ahc_softc *ahc,
                                       char *buffer, int length);
 
+/*
+ * Table of syncrates that don't follow the "divisible by 4"
+ * rule. This table will be expanded in future SCSI specs.
+ */
+static struct {
+       u_int period_factor;
+       u_int period;   /* in 100ths of ns */
+} scsi_syncrates[] = {
+       { 0x08, 625 },  /* FAST-160 */
+       { 0x09, 1250 }, /* FAST-80 */
+       { 0x0a, 2500 }, /* FAST-40 40MHz */
+       { 0x0b, 3030 }, /* FAST-40 33MHz */
+       { 0x0c, 5000 }  /* FAST-20 */
+};
+
+/*
+ * Return the frequency in kHz corresponding to the given
+ * sync period factor.
+ */
+static u_int
+ahc_calc_syncsrate(u_int period_factor)
+{
+       int i;
+       int num_syncrates;
+
+       num_syncrates = sizeof(scsi_syncrates) / sizeof(scsi_syncrates[0]);
+       /* See if the period is in the "exception" table */
+       for (i = 0; i < num_syncrates; i++) {
+
+               if (period_factor == scsi_syncrates[i].period_factor) {
+                       /* Period in kHz */
+                       return (100000000 / scsi_syncrates[i].period);
+               }
+       }
+
+       /*
+        * Wasn't in the table, so use the standard
+        * 4 times conversion.
+        */
+       return (10000000 / (period_factor * 4 * 10));
+}
+
+
 static void
 copy_mem_info(struct info_str *info, char *data, int len)
 {
@@ -106,7 +149,7 @@ ahc_format_transinfo(struct info_str *info, struct ahc_transinfo *tinfo)
         speed = 3300;
         freq = 0;
        if (tinfo->offset != 0) {
-               freq = aic_calc_syncsrate(tinfo->period);
+               freq = ahc_calc_syncsrate(tinfo->period);
                speed = freq;
        }
        speed *= (0x01 << tinfo->width);
@@ -142,6 +185,7 @@ ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
                      u_int target_offset)
 {
        struct  ahc_linux_target *targ;
+       struct  scsi_target *starget;
        struct  ahc_initiator_tinfo *tinfo;
        struct  ahc_tmode_tstate *tstate;
        int     lun;
@@ -153,9 +197,10 @@ ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
        copy_info(info, "Target %d Negotiation Settings\n", target_id);
        copy_info(info, "\tUser: ");
        ahc_format_transinfo(info, &tinfo->user);
-       targ = ahc->platform_data->targets[target_offset];
-       if (targ == NULL)
+       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);
@@ -163,22 +208,25 @@ ahc_dump_target_state(struct ahc_softc *ahc, struct info_str *info,
        ahc_format_transinfo(info, &tinfo->curr);
 
        for (lun = 0; lun < AHC_NUM_LUNS; lun++) {
-               struct ahc_linux_device *dev;
+               struct scsi_device *sdev;
 
-               dev = targ->devices[lun];
+               sdev = targ->sdev[lun];
 
-               if (dev == NULL)
+               if (sdev == NULL)
                        continue;
 
-               ahc_dump_device_state(info, dev);
+               ahc_dump_device_state(info, sdev);
        }
 }
 
 static void
-ahc_dump_device_state(struct info_str *info, struct ahc_linux_device *dev)
+ahc_dump_device_state(struct info_str *info, struct scsi_device *sdev)
 {
+       struct ahc_linux_device *dev = scsi_transport_device_data(sdev);
+
        copy_info(info, "\tChannel %c Target %d Lun %d Settings\n",
-                 dev->target->channel + 'A', dev->target->target, dev->lun);
+                 sdev->sdev_target->channel + 'A',
+                 sdev->sdev_target->id, sdev->lun);
 
        copy_info(info, "\t\tCommands Queued %ld\n", dev->commands_issued);
        copy_info(info, "\t\tCommands Active %d\n", dev->active);
@@ -292,20 +340,13 @@ int
 ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
                    off_t offset, int length, int inout)
 {
-       struct  ahc_softc *ahc;
+       struct  ahc_softc *ahc = *(struct ahc_softc **)shost->hostdata;
        struct  info_str info;
        char    ahc_info[256];
-       u_long  s;
        u_int   max_targ;
        u_int   i;
        int     retval;
 
-       retval = -EINVAL;
-       ahc_list_lock(&s);
-       ahc = ahc_find_softc(*(struct ahc_softc **)shost->hostdata);
-       if (ahc == NULL)
-               goto done;
-
         /* Has data been written to the file? */ 
        if (inout == TRUE) {
                retval = ahc_proc_write_seeprom(ahc, buffer, length);
@@ -367,6 +408,5 @@ ahc_linux_proc_info(struct Scsi_Host *shost, char *buffer, char **start,
        }
        retval = info.pos > info.offset ? info.pos - info.offset : 0;
 done:
-       ahc_list_unlock(&s);
        return (retval);
 }