Aic7xxx Driver Update

 o Be more conservative in testing FIFOEMP before calling an
   overrun on a data transfer.

drivers/scsi/aic7xxx/aic7xxx.seq

@@ -40,7 +40,7 @@
  * $FreeBSD$
  */
 
-VERSION = "$Id: //depot/aic7xxx/aic7xxx/aic7xxx.seq#55 $"
+VERSION = "$Id: //depot/aic7xxx/aic7xxx/aic7xxx.seq#56 $"
 PATCH_ARG_LIST = "struct ahc_softc *ahc"
 PREFIX = "ahc_"
 
@@ -1044,11 +1044,19 @@ ultra2_fifoflush:
 			 * LAST_SEG_DONE to come true on a completed transfer
 			 * and then test to see if the data FIFO is non-empty.
 			 */
-			test	SCB_RESIDUAL_SGPTR[0], SG_LIST_NULL jz . + 4;
+			test	SCB_RESIDUAL_SGPTR[0], SG_LIST_NULL
+				jz ultra2_wait_fifoemp;
 			test	SG_CACHE_SHADOW, LAST_SEG_DONE jz .;
+			/*
+			 * FIFOEMP can lag LAST_SEG_DONE.  Wait a few
+			 * clocks before calling this an overrun.
+			 */
+			test	DFSTATUS, FIFOEMP jnz ultra2_fifoempty;
+			test	DFSTATUS, FIFOEMP jnz ultra2_fifoempty;
 			test	DFSTATUS, FIFOEMP jnz ultra2_fifoempty;
 			/* Overrun */
 			jmp	data_phase_loop;
+ultra2_wait_fifoemp:
 			test	DFSTATUS, FIFOEMP jz .;
 		}
 ultra2_fifoempty:

drivers/scsi/aic7xxx/aic7xxx_reg.h_shipped

@@ -2,8 +2,8 @@
  * DO NOT EDIT - This file is automatically generated
  *		 from the following source files:
  *
- * $Id: //depot/aic7xxx/aic7xxx/aic7xxx.seq#54 $
- * $Id: //depot/aic7xxx/aic7xxx/aic7xxx.reg#38 $
+ * $Id: //depot/aic7xxx/aic7xxx/aic7xxx.seq#56 $
+ * $Id: //depot/aic7xxx/aic7xxx/aic7xxx.reg#39 $
  */
 typedef int (ahc_reg_print_t)(u_int, u_int *, u_int);
 typedef struct ahc_reg_parse_entry {
@@ -432,13 +432,6 @@ ahc_reg_print_t ahc_scsiseq_template_print;
     ahc_print_register(NULL, 0, "SCSISEQ_TEMPLATE", 0x54, regvalue, cur_col, wrap)
 #endif
 
-#if AIC_DEBUG_REGISTERS
-ahc_reg_print_t ahc_data_count_odd_print;
-#else
-#define ahc_data_count_odd_print(regvalue, cur_col, wrap) \
-    ahc_print_register(NULL, 0, "DATA_COUNT_ODD", 0x55, regvalue, cur_col, wrap)
-#endif
-
 #if AIC_DEBUG_REGISTERS
 ahc_reg_print_t ahc_ha_274_biosglobal_print;
 #else
@@ -1396,8 +1389,6 @@ ahc_reg_print_t ahc_sg_cache_pre_print;
 #define		ENAUTOATNI      	0x04
 #define		ENAUTOATNP      	0x02
 
-#define	DATA_COUNT_ODD  		0x55
-
 #define	HA_274_BIOSGLOBAL		0x56
 #define	INITIATOR_TAG   		0x56
 #define		HA_274_EXTENDED_TRANS	0x01
@@ -1655,7 +1646,8 @@ ahc_reg_print_t ahc_sg_cache_pre_print;
 #define		TWIN_CHNLB      	0x80
 
 #define	SCB_LUN         		0xba
-#define		LID             	0xff
+#define		LID             	0x3f
+#define		SCB_XFERLEN_ODD 	0x80
 
 #define	SCB_TAG         		0xbb
 
@@ -1749,7 +1741,6 @@ ahc_reg_print_t ahc_sg_cache_pre_print;
 
 #define	SG_CACHE_SHADOW 		0xfc
 #define		SG_ADDR_MASK    	0xf8
-#define		ODD_SEG         	0x04
 #define		LAST_SEG        	0x02
 #define		LAST_SEG_DONE   	0x01