diff options
Diffstat (limited to 'drivers/scsi/53c7,8xx.scr')
| -rw-r--r-- | drivers/scsi/53c7,8xx.scr | 33 |
1 files changed, 23 insertions, 10 deletions
diff --git a/drivers/scsi/53c7,8xx.scr b/drivers/scsi/53c7,8xx.scr index 0174526f5..52ab39b11 100644 --- a/drivers/scsi/53c7,8xx.scr +++ b/drivers/scsi/53c7,8xx.scr @@ -221,10 +221,10 @@ ABSOLUTE int_test_1 = 0x04000000 ; Test 1 complete ABSOLUTE int_test_2 = 0x04010000 ; Test 2 complete ABSOLUTE int_test_3 = 0x04020000 ; Test 3 complete -EXTERNAL NCR53c7xx_msg_abort ; Pointer to abort message -EXTERNAL NCR53c7xx_msg_reject ; Pointer to reject message -EXTERNAL NCR53c7xx_zero ; long with zero in it, use for source -EXTERNAL NCR53c7xx_sink ; long to dump worthless data in +ABSOLUTE NCR53c7xx_msg_abort = 0 ; Pointer to abort message +ABSOLUTE NCR53c7xx_msg_reject = 0 ; Pointer to reject message +ABSOLUTE NCR53c7xx_zero = 0 ; long with zero in it, use for source +ABSOLUTE NCR53c7xx_sink = 0 ; long to dump worthless data in ; Pointer to final bytes of multi-byte messages ABSOLUTE msg_buf = 0 @@ -233,7 +233,7 @@ ABSOLUTE msg_buf = 0 ABSOLUTE reselected_identify = 0 ABSOLUTE reselected_tag = 0 -; Request sense command pointer, its a 6 byte command, should +; Request sense command pointer, it's a 6 byte command, should ; be constant for all commands since we always want 16 bytes of ; sense and we don't need to change any fields as we did under ; SCSI-I when we actually cared about the LUN field. @@ -830,7 +830,7 @@ reselected_not_end: ; XXX the ALU is only eight bits wide, and the assembler ; wont do the dirt work for us. As long as dsa_check_reselect ; is negative, we need to sign extend with 1 bits to the full - ; 32 bit width os the address. + ; 32 bit width of the address. ; ; A potential work around would be to have a known alignment ; of the DSA structure such that the base address plus @@ -881,13 +881,23 @@ selected: wait_reselect_failed: ; Reading CTEST2 clears the SIG_P bit in the ISTAT register. MOVE CTEST2 & 0x40 TO SFBR - JUMP selected, IF NOT 0x40 + JUMP schedule, IF 0x40 + MOVE SIST0 & 0x20 TO SFBR + JUMP selected, IF 0x20 +; FIXME : Something bogus happened, and we shouldn't fail silently. JUMP schedule select_failed: - MOVE ISTAT & 0x20 TO SFBR - JUMP reselected, IF NOT 0x20 - MOVE ISTAT & 0xdf TO ISTAT +; If SIGP is set, the user just gave us another command, and +; we should restart or return to the scheduler. +; Reading CTEST2 clears the SIG_P bit in the ISTAT register. + MOVE CTEST2 & 0x40 TO SFBR + JUMP select, IF 0x40 +; Otherwise, mask the selected and reselected bits off SIST0 + MOVE SIST0 & 0x30 TO SFBR + JUMP selected, IF 0x20 + JUMP reselected, IF 0x10 +; FIXME : Something bogus happened, and we shouldn't fail silently. JUMP schedule ; @@ -980,7 +990,10 @@ no_source_data: ; If DSP points here, and a phase mismatch is encountered, we need to ; do a bus reset. ; + + MOVE SCNTL2 & 0x7f TO SCNTL2 MOVE 1, NCR53c7xx_msg_abort, WHEN MSG_OUT + WAIT DISCONNECT INT int_norm_aborted ; |