patch-2.3.47 linux/drivers/scsi/hosts.h

• Lines: 42
• Date: Sun Feb 20 20:49:29 2000
• Orig file: v2.3.46/linux/drivers/scsi/hosts.h
• Orig date: Wed Feb 16 17:03:52 2000

diff -u --recursive --new-file v2.3.46/linux/drivers/scsi/hosts.h linux/drivers/scsi/hosts.h
@@ -362,6 +362,17 @@
      * initialized, as required.
      */
 
+    /*
+     * The maximum length of SCSI commands that this host can accept.
+     * Probably 12 for most host adapters, but could be 16 for others.
+     * For drivers that don't set this field, a value of 12 is
+     * assumed.  I am leaving this as a number rather than a bit
+     * because you never know what subsequent SCSI standards might do
+     * (i.e. could there be a 20 byte or a 24-byte command a few years
+     * down the road?).  
+     */
+    unsigned char max_cmd_len;
+
     int this_id;
     int can_queue;
     short cmd_per_lun;
@@ -379,6 +390,12 @@
      * Host has rejected a command because it was busy.
      */
     unsigned host_blocked:1;
+
+    /*
+     * Host has requested that no further requests come through for the
+     * time being.
+     */
+    unsigned host_self_blocked:1;
     
     /*
      * Host uses correct SCSI ordering not PC ordering. The bit is
@@ -412,6 +429,10 @@
  */
 extern void scsi_free_host_dev(Scsi_Device * SDpnt);
 extern Scsi_Device * scsi_get_host_dev(struct Scsi_Host * SHpnt);
+
+extern void scsi_unblock_requests(struct Scsi_Host * SHpnt);
+extern void scsi_block_requests(struct Scsi_Host * SHpnt);
+extern void scsi_report_bus_reset(struct Scsi_Host * SHpnt, int channel);
 
 typedef struct SHN
     {