diff options
Diffstat (limited to 'sys/dev/aic7xxx/aic7xxx.seq')
| -rw-r--r-- | sys/dev/aic7xxx/aic7xxx.seq | 67 |
1 files changed, 29 insertions, 38 deletions
diff --git a/sys/dev/aic7xxx/aic7xxx.seq b/sys/dev/aic7xxx/aic7xxx.seq index c1ab64d..2a4e92e 100644 --- a/sys/dev/aic7xxx/aic7xxx.seq +++ b/sys/dev/aic7xxx/aic7xxx.seq @@ -32,7 +32,7 @@ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * - * $Id: aic7xxx.seq,v 1.78 1998/09/15 07:24:16 gibbs Exp $ + * $Id: aic7xxx.seq,v 1.79 1998/09/21 16:46:13 gibbs Exp $ */ #include <dev/aic7xxx/aic7xxx.reg> @@ -234,11 +234,12 @@ select_in: /* * Setup the DMA for sending the identify and - * command information. We keep a count of the - * number of bytes to send to the host in ARG_2. + * command information. */ or SEQ_FLAGS, CMDPHASE_PENDING; - mov A, TMODE_CMDADDR_NEXT; + + /* XXX If ring buffer is full, return busy or queue full */ + mov A, TQINPOS; if ((ahc->features & AHC_CMD_CHAN) != 0) { mvi DINDEX, CCHADDR; mvi TMODE_CMDADDR call set_32byte_addr; @@ -289,6 +290,7 @@ select_in: * Our first message must be one of IDENTIFY, ABORT, or * BUS_DEVICE_RESET. */ + /* XXX May need to be more lax here for older initiators... */ test DINDEX, MSG_IDENTIFYFLAG jz more_first_messages; /* Store for host */ if ((ahc->features & AHC_CMD_CHAN) != 0) { @@ -296,7 +298,6 @@ select_in: } else { mov DFDAT, DINDEX; } - mvi ARG_2, 3; /* Remember for disconnection decision */ test DINDEX, MSG_IDENTIFY_DISCFLAG jnz . + 2; @@ -337,7 +338,6 @@ select_in: } else { mov DFDAT, DINDEX; } - add ARG_2, 2; jmp ident_messages_done; more_first_messages: @@ -483,17 +483,6 @@ target_busfree: jmp poll_for_work; target_cmdphase: - /* - * Add one for the terminating byte - * and one for the command code. - */ - if ((ahc->features & AHC_CMD_CHAN) != 0) { - add CCHCNT, 2, ARG_2; - } else { - add HCNT[0], 2, ARG_2; - clr HCNT[1]; - clr HCNT[2]; - } mvi SCSISIGO, P_COMMAND|BSYO; call targ_inb; mov A, DINDEX; @@ -506,20 +495,16 @@ target_cmdphase: /* * Determine the number of bytes to read - * based on the command group code using an adding - * jump table. Count is one less than the total - * since we've already fetched the first byte. + * based on the command group code via table lookup. + * We reuse the first 8 bytes of the TARG_SCSIRATE + * BIOS array for this table. Count is one less than + * the total for the command since we've already fetched + * the first byte. */ shr A, CMD_GROUP_CODE_SHIFT; add SINDEX, TARG_SCSIRATE, A; mov A, SINDIR; - if ((ahc->features & AHC_CMD_CHAN) != 0) { - add CCHCNT, A; - } else { - add HCNT[0], A; - } - test A, 0xFF jz command_phase_done; command_loop: or SXFRCTL0, SPIOEN; @@ -566,17 +551,28 @@ complete_target_cmd: test SEQ_FLAGS, TARG_CMD_PENDING jnz . + 2; mov SCB_TAG jmp complete_post; if ((ahc->features & AHC_CMD_CHAN) != 0) { + /* Set the valid byte */ + mvi CCSCBADDR, 24; + mov CCSCBRAM, ALLONES; + mvi CCHCNT, 28; or CCSCBCTL, CCSCBEN|CCSCBRESET; test CCSCBCTL, CCSCBDONE jz .; clr CCSCBCTL; } else { + /* Set the valid byte */ + or DFCNTRL, FIFORESET; + mvi DFWADDR, 3; /* Third 64bit word or byte 24 */ + mov DFDAT, ALLONES; + mvi HCNT[0], 28; + clr HCNT[1]; + clr HCNT[2]; or DFCNTRL, HDMAEN|FIFOFLUSH; call dma_finish; } - inc TMODE_CMDADDR_NEXT; - cmp TMODE_CMDADDR_NEXT, TMODE_NUMCMDS jne . + 2; - clr TMODE_CMDADDR_NEXT; - mvi TARGET_CMD_CMPLT jmp complete_post; + inc TQINPOS; + test SEQ_FLAGS, NO_DISCONNECT jz . + 2; + mvi INTSTAT,TARGET_SYNC_CMD|CMDCMPLT ret; + mvi INTSTAT,CMDCMPLT ret; } initiator_select: mvi SPIOEN call initialize_channel; @@ -960,11 +956,7 @@ p_mesgout: mov SINDEX, MSG_OUT; cmp SINDEX, MSG_IDENTIFYFLAG jne p_mesgout_from_host; p_mesgout_identify: - if ((ahc->features & AHC_WIDE) != 0) { - and SINDEX,0xf,SCB_TCL; /* lun */ - } else { - and SINDEX,0x7,SCB_TCL; /* lun */ - } + and SINDEX,LID,SCB_TCL; /* lun */ and A,DISCENB,SCB_CONTROL; /* mask off disconnect privledge */ or SINDEX,A; /* or in disconnect privledge */ or SINDEX,MSG_IDENTIFYFLAG; @@ -1122,9 +1114,8 @@ complete_post: inc QOUTPOS; } if ((ahc->flags & AHC_TARGETMODE) != 0) { - test SEQ_FLAGS, NO_DISCONNECT jz . + 3; - mvi INTSTAT,TARGET_SYNC_CMD|CMDCMPLT; - ret; + test SEQ_FLAGS, NO_DISCONNECT jz . + 2; + mvi INTSTAT,TARGET_SYNC_CMD|CMDCMPLT ret; } mvi INTSTAT,CMDCMPLT ret; |
