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aic7xxx.seq (70204) aic7xxx.seq (71390)
1/*
2 * Adaptec 274x/284x/294x device driver firmware for Linux and FreeBSD.
3 *
4 * Copyright (c) 1994-2000 Justin Gibbs.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions

--- 14 unchanged lines hidden (view full) ---

23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
1/*
2 * Adaptec 274x/284x/294x device driver firmware for Linux and FreeBSD.
3 *
4 * Copyright (c) 1994-2000 Justin Gibbs.
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions

--- 14 unchanged lines hidden (view full) ---

23 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 *
31 * $Id: //depot/src/aic7xxx/aic7xxx.seq#15 $
31 * $Id: //depot/src/aic7xxx/aic7xxx.seq#16 $
32 *
32 *
33 * $FreeBSD: head/sys/dev/aic7xxx/aic7xxx.seq 70204 2000-12-20 01:11:37Z gibbs $
33 * $FreeBSD: head/sys/dev/aic7xxx/aic7xxx.seq 71390 2001-01-22 21:03:48Z gibbs $
34 */
35
36#include "aic7xxx.reg"
37#include "scsi_message.h"
38
39/*
40 * A few words on the waiting SCB list:
41 * After starting the selection hardware, we check for reconnecting targets

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49 * use byte 27 of the SCB as a psuedo-next pointer and to thread a list
50 * of SCBs that are awaiting selection. Since 0-0xfe are valid SCB indexes,
51 * SCB_LIST_NULL is 0xff which is out of range. An entry is also added to
52 * this list everytime a request sense occurs or after completing a non-tagged
53 * command for which a second SCB has been queued. The sequencer will
54 * automatically consume the entries.
55 */
56
34 */
35
36#include "aic7xxx.reg"
37#include "scsi_message.h"
38
39/*
40 * A few words on the waiting SCB list:
41 * After starting the selection hardware, we check for reconnecting targets

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49 * use byte 27 of the SCB as a psuedo-next pointer and to thread a list
50 * of SCBs that are awaiting selection. Since 0-0xfe are valid SCB indexes,
51 * SCB_LIST_NULL is 0xff which is out of range. An entry is also added to
52 * this list everytime a request sense occurs or after completing a non-tagged
53 * command for which a second SCB has been queued. The sequencer will
54 * automatically consume the entries.
55 */
56
57bus_free_sel:
58 /*
59 * Turn off the selection hardware. We need to reset the
60 * selection request in order to perform a new selection.
61 */
62 and SCSISEQ, TEMODE|ENSELI|ENRSELI|ENAUTOATNP, SCSISEQ;
63 and SIMODE1, ~ENBUSFREE;
57poll_for_work:
58 call clear_target_state;
59 and SXFRCTL0, ~SPIOEN;
60 if ((ahc->features & AHC_ULTRA2) != 0) {
61 clr SCSIBUSL;
62 }
63poll_for_work_loop:
64 test SSTAT0, SELDO|SELDI jnz selection;

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130 /*
131 * Start the first entry on the waiting SCB list.
132 */
133 mov SCBPTR, WAITING_SCBH;
134 call start_selection;
135 jmp poll_for_work_loop;
136
137abort_qinscb:
64poll_for_work:
65 call clear_target_state;
66 and SXFRCTL0, ~SPIOEN;
67 if ((ahc->features & AHC_ULTRA2) != 0) {
68 clr SCSIBUSL;
69 }
70poll_for_work_loop:
71 test SSTAT0, SELDO|SELDI jnz selection;

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137 /*
138 * Start the first entry on the waiting SCB list.
139 */
140 mov SCBPTR, WAITING_SCBH;
141 call start_selection;
142 jmp poll_for_work_loop;
143
144abort_qinscb:
138 mvi ABORT_QINSCB call set_seqint;
139 call add_scb_to_free_list;
140 jmp poll_for_work_loop;
141
142start_selection:
143 /*
144 * If bus reset interrupts have been disabled (from a previous
145 * reset), re-enable them now. Resets are only of interest
146 * when we have outstanding transactions, so we can safely

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203 mvi CLRSINT1,CLRBUSFREE;
204 or SIMODE1, ENBUSFREE;
205
206 /*
207 * Guard against a bus free after (re)selection
208 * but prior to enabling the busfree interrupt. SELDI
209 * and SELDO will be cleared in that case.
210 */
145 call add_scb_to_free_list;
146 jmp poll_for_work_loop;
147
148start_selection:
149 /*
150 * If bus reset interrupts have been disabled (from a previous
151 * reset), re-enable them now. Resets are only of interest
152 * when we have outstanding transactions, so we can safely

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209 mvi CLRSINT1,CLRBUSFREE;
210 or SIMODE1, ENBUSFREE;
211
212 /*
213 * Guard against a bus free after (re)selection
214 * but prior to enabling the busfree interrupt. SELDI
215 * and SELDO will be cleared in that case.
216 */
217 test SSTAT0, SELDI|SELDO jz bus_free_sel;
211 test SSTAT0,SELDO jnz select_out;
218 test SSTAT0,SELDO jnz select_out;
212 test SSTAT0, SELDI jnz . + 3;
213 and SIMODE1, ~ENBUSFREE;
214 jmp poll_for_work;
215 mvi CLRSINT0, CLRSELDI;
216select_in:
217 if ((ahc->flags & AHC_TARGETROLE) != 0) {
218 if ((ahc->flags & AHC_INITIATORROLE) != 0) {
219 test SSTAT0, TARGET jz initiator_reselect;
220 }
219select_in:
220 if ((ahc->flags & AHC_TARGETROLE) != 0) {
221 if ((ahc->flags & AHC_INITIATORROLE) != 0) {
222 test SSTAT0, TARGET jz initiator_reselect;
223 }
224 mvi CLRSINT0, CLRSELDI;
221
222 /*
223 * We've just been selected. Assert BSY and
224 * setup the phase for receiving messages
225 * from the target.
226 *
227 * If bus reset interrupts have been disabled (from a
228 * previous reset), re-enable them now. Resets are only

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402
403if ((ahc->flags & AHC_INITIATORROLE) != 0) {
404/*
405 * Reselection has been initiated by a target. Make a note that we've been
406 * reselected, but haven't seen an IDENTIFY message from the target yet.
407 */
408initiator_reselect:
409 /* XXX test for and handle ONE BIT condition */
225
226 /*
227 * We've just been selected. Assert BSY and
228 * setup the phase for receiving messages
229 * from the target.
230 *
231 * If bus reset interrupts have been disabled (from a
232 * previous reset), re-enable them now. Resets are only

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406
407if ((ahc->flags & AHC_INITIATORROLE) != 0) {
408/*
409 * Reselection has been initiated by a target. Make a note that we've been
410 * reselected, but haven't seen an IDENTIFY message from the target yet.
411 */
412initiator_reselect:
413 /* XXX test for and handle ONE BIT condition */
414 or SXFRCTL0, SPIOEN|CLRSTCNT|CLRCHN;
410 and SAVED_SCSIID, SELID_MASK, SELID;
411 if ((ahc->features & AHC_ULTRA2) != 0) {
412 and A, OID, SCSIID_ULTRA2;
413 } else {
414 and A, OID, SCSIID;
415 }
416 or SAVED_SCSIID, A;
417 if ((ahc->features & AHC_TWIN) != 0) {
418 test SBLKCTL, SELBUSB jz . + 2;
419 or SAVED_SCSIID, TWIN_CHNLB;
420 }
415 and SAVED_SCSIID, SELID_MASK, SELID;
416 if ((ahc->features & AHC_ULTRA2) != 0) {
417 and A, OID, SCSIID_ULTRA2;
418 } else {
419 and A, OID, SCSIID;
420 }
421 or SAVED_SCSIID, A;
422 if ((ahc->features & AHC_TWIN) != 0) {
423 test SBLKCTL, SELBUSB jz . + 2;
424 or SAVED_SCSIID, TWIN_CHNLB;
425 }
421 or SXFRCTL0, SPIOEN|CLRSTCNT|CLRCHN;
426 mvi CLRSINT0, CLRSELDI;
422 jmp ITloop;
423}
424
425/*
426 * After the selection, remove this SCB from the "waiting SCB"
427 * list. This is achieved by simply moving our "next" pointer into
428 * WAITING_SCBH. Our next pointer will be set to null the next time this
429 * SCB is used, so don't bother with it now.

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537 * the total for the command since we've already fetched
538 * the first byte.
539 */
540 shr A, CMD_GROUP_CODE_SHIFT;
541 add SINDEX, CMDSIZE_TABLE, A;
542 mov A, SINDIR;
543
544 test A, 0xFF jz command_phase_done;
427 jmp ITloop;
428}
429
430/*
431 * After the selection, remove this SCB from the "waiting SCB"
432 * list. This is achieved by simply moving our "next" pointer into
433 * WAITING_SCBH. Our next pointer will be set to null the next time this
434 * SCB is used, so don't bother with it now.

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542 * the total for the command since we've already fetched
543 * the first byte.
544 */
545 shr A, CMD_GROUP_CODE_SHIFT;
546 add SINDEX, CMDSIZE_TABLE, A;
547 mov A, SINDIR;
548
549 test A, 0xFF jz command_phase_done;
545command_loop:
546 or SXFRCTL0, SPIOEN;
550 or SXFRCTL0, SPIOEN;
551command_loop:
547 test SSTAT0, SPIORDY jz .;
548 cmp A, 1 jne . + 2;
549 and SXFRCTL0, ~SPIOEN; /* Last Byte */
550 if ((ahc->features & AHC_CMD_CHAN) != 0) {
551 mov CCSCBRAM, SCSIDATL;
552 } else {
553 mov DFDAT, SCSIDATL;
554 }

--- 699 unchanged lines hidden (view full) ---

1254 * be the case by clearing HADDR[0] even though
1255 * we aren't going to touch host memeory.
1256 */
1257 clr HADDR[0];
1258 if ((ahc->features & AHC_ULTRA2) != 0) {
1259 mvi DFCNTRL, (PRELOADEN|SCSIEN|DIRECTION);
1260 bmov DFDAT, SCB_CDB_STORE, 12;
1261 } else if ((ahc->features & AHC_CMD_CHAN) != 0) {
552 test SSTAT0, SPIORDY jz .;
553 cmp A, 1 jne . + 2;
554 and SXFRCTL0, ~SPIOEN; /* Last Byte */
555 if ((ahc->features & AHC_CMD_CHAN) != 0) {
556 mov CCSCBRAM, SCSIDATL;
557 } else {
558 mov DFDAT, SCSIDATL;
559 }

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1259 * be the case by clearing HADDR[0] even though
1260 * we aren't going to touch host memeory.
1261 */
1262 clr HADDR[0];
1263 if ((ahc->features & AHC_ULTRA2) != 0) {
1264 mvi DFCNTRL, (PRELOADEN|SCSIEN|DIRECTION);
1265 bmov DFDAT, SCB_CDB_STORE, 12;
1266 } else if ((ahc->features & AHC_CMD_CHAN) != 0) {
1262 if ((ahc->features & AHC_SCB_BTT) != 0) {
1267 if ((ahc->flags & AHC_SCB_BTT) != 0) {
1263 /*
1264 * On the 7895 the data FIFO will
1265 * get corrupted if you try to dump
1266 * data from external SCB memory into
1267 * the FIFO while it is enabled. So,
1268 * fill the fifo and then enable SCSI
1269 * transfers.
1270 */
1271 mvi DFCNTRL, (DIRECTION|FIFORESET);
1272 } else {
1273 mvi DFCNTRL, (SCSIEN|SDMAEN|DIRECTION|FIFORESET);
1274 }
1275 bmov DFDAT, SCB_CDB_STORE, 12;
1268 /*
1269 * On the 7895 the data FIFO will
1270 * get corrupted if you try to dump
1271 * data from external SCB memory into
1272 * the FIFO while it is enabled. So,
1273 * fill the fifo and then enable SCSI
1274 * transfers.
1275 */
1276 mvi DFCNTRL, (DIRECTION|FIFORESET);
1277 } else {
1278 mvi DFCNTRL, (SCSIEN|SDMAEN|DIRECTION|FIFORESET);
1279 }
1280 bmov DFDAT, SCB_CDB_STORE, 12;
1276 if ((ahc->features & AHC_SCB_BTT) != 0) {
1281 if ((ahc->flags & AHC_SCB_BTT) != 0) {
1277 mvi DFCNTRL, (SCSIEN|SDMAEN|DIRECTION|FIFOFLUSH);
1278 } else {
1279 or DFCNTRL, FIFOFLUSH;
1280 }
1281 } else {
1282 mvi DFCNTRL, (SCSIEN|SDMAEN|DIRECTION|FIFORESET);
1283 call copy_to_fifo_6;
1284 call copy_to_fifo_6;

--- 293 unchanged lines hidden (view full) ---

1578 jmp mesgin_done;
1579
1580/*
1581 * Index into our Busy Target table. SINDEX and DINDEX are modified
1582 * upon return. SCBPTR may be modified by this action.
1583 */
1584set_busy_target:
1585 shr DINDEX, 4, SINDEX;
1282 mvi DFCNTRL, (SCSIEN|SDMAEN|DIRECTION|FIFOFLUSH);
1283 } else {
1284 or DFCNTRL, FIFOFLUSH;
1285 }
1286 } else {
1287 mvi DFCNTRL, (SCSIEN|SDMAEN|DIRECTION|FIFORESET);
1288 call copy_to_fifo_6;
1289 call copy_to_fifo_6;

--- 293 unchanged lines hidden (view full) ---

1583 jmp mesgin_done;
1584
1585/*
1586 * Index into our Busy Target table. SINDEX and DINDEX are modified
1587 * upon return. SCBPTR may be modified by this action.
1588 */
1589set_busy_target:
1590 shr DINDEX, 4, SINDEX;
1586 if ((ahc->features & AHC_SCB_BTT) != 0) {
1591 if ((ahc->flags & AHC_SCB_BTT) != 0) {
1587 mov SCBPTR, SAVED_LUN;
1588 add DINDEX, SCB_64_BTT;
1589 } else {
1590 add DINDEX, BUSY_TARGETS;
1591 }
1592 mov DINDIR, ARG_1 ret;
1593
1594/*
1595 * Identify message? For a reconnecting target, this tells us the lun
1596 * that the reconnection is for - find the correct SCB and switch to it,
1597 * clearing the "disconnected" bit so we don't "find" it by accident later.
1598 */
1599mesgin_identify:
1592 mov SCBPTR, SAVED_LUN;
1593 add DINDEX, SCB_64_BTT;
1594 } else {
1595 add DINDEX, BUSY_TARGETS;
1596 }
1597 mov DINDIR, ARG_1 ret;
1598
1599/*
1600 * Identify message? For a reconnecting target, this tells us the lun
1601 * that the reconnection is for - find the correct SCB and switch to it,
1602 * clearing the "disconnected" bit so we don't "find" it by accident later.
1603 */
1604mesgin_identify:
1600 and SAVED_LUN, MSG_IDENTIFY_LUNMASK, A;
1601 /*
1602 * Determine whether a target is using tagged or non-tagged
1603 * transactions by first looking at the transaction stored in
1604 * the busy target array. If there is no untagged transaction
1605 * for this target or the transaction is for a different lun, then
1606 * this must be an untagged transaction.
1607 */
1605 /*
1606 * Determine whether a target is using tagged or non-tagged
1607 * transactions by first looking at the transaction stored in
1608 * the busy target array. If there is no untagged transaction
1609 * for this target or the transaction is for a different lun, then
1610 * this must be an untagged transaction.
1611 */
1608fetch_busy_target:
1609 shr A, 4, SAVED_SCSIID;
1610 if ((ahc->features & AHC_SCB_BTT) != 0) {
1611 add SINDEX, SCB_64_BTT, A;
1612 shr SINDEX, 4, SELID;
1613 and SAVED_LUN, MSG_IDENTIFY_LUNMASK, A;
1614 if ((ahc->flags & AHC_SCB_BTT) != 0) {
1615 add SINDEX, SCB_64_BTT;
1612 mov SCBPTR, SAVED_LUN;
1616 mov SCBPTR, SAVED_LUN;
1617 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1618 add NONE, -SCB_64_BTT, SINDEX;
1619 jc . + 2;
1620 mvi INTSTAT, OUT_OF_RANGE;
1621 nop;
1622 add NONE, -(SCB_64_BTT + 16), SINDEX;
1623 jnc . + 2;
1624 mvi INTSTAT, OUT_OF_RANGE;
1625 nop;
1626 }
1613 } else {
1627 } else {
1614 add SINDEX, BUSY_TARGETS, A;
1628 add SINDEX, BUSY_TARGETS;
1615 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1629 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1616 add A, -BUSY_TARGETS, SINDEX;
1630 add NONE, -BUSY_TARGETS, SINDEX;
1617 jc . + 2;
1618 mvi INTSTAT, OUT_OF_RANGE;
1619 nop;
1631 jc . + 2;
1632 mvi INTSTAT, OUT_OF_RANGE;
1633 nop;
1620 add A, -(BUSY_TARGETS + 16), SINDEX;
1634 add NONE, -(BUSY_TARGETS + 16), SINDEX;
1621 jnc . + 2;
1622 mvi INTSTAT, OUT_OF_RANGE;
1623 nop;
1624 }
1625 }
1626 mov ARG_1, SINDIR;
1627 cmp ARG_1, SCB_LIST_NULL je snoop_tag;
1628 if ((ahc->flags & AHC_PAGESCBS) != 0) {
1629 mov ARG_1 call findSCB;
1630 } else {
1631 mov SCBPTR, RETURN_1;
1632 }
1635 jnc . + 2;
1636 mvi INTSTAT, OUT_OF_RANGE;
1637 nop;
1638 }
1639 }
1640 mov ARG_1, SINDIR;
1641 cmp ARG_1, SCB_LIST_NULL je snoop_tag;
1642 if ((ahc->flags & AHC_PAGESCBS) != 0) {
1643 mov ARG_1 call findSCB;
1644 } else {
1645 mov SCBPTR, RETURN_1;
1646 }
1633 if ((ahc->features & AHC_SCB_BTT) != 0) {
1647 if ((ahc->flags & AHC_SCB_BTT) != 0) {
1634 jmp setup_SCB_id_lun_okay;
1635 } else {
1648 jmp setup_SCB_id_lun_okay;
1649 } else {
1636 mov A, SCB_LUN;
1637 cmp SAVED_LUN, A je setup_SCB_id_lun_okay;
1650 jmp setup_SCB_id_okay;
1638 }
1651 }
1639 if ((ahc->flags & AHC_PAGESCBS) != 0) {
1640 call add_scb_to_disc_list;
1641 }
1642
1643/*
1644 * Here we "snoop" the bus looking for a SIMPLE QUEUE TAG message.
1645 * If we get one, we use the tag returned to find the proper
1646 * SCB. With SCB paging, we must search for non-tagged
1647 * transactions since the SCB may exist in any slot. If we're not
1648 * using SCB paging, we can use the tag as the direct index to the
1649 * SCB.
1650 */
1651snoop_tag:
1652
1653/*
1654 * Here we "snoop" the bus looking for a SIMPLE QUEUE TAG message.
1655 * If we get one, we use the tag returned to find the proper
1656 * SCB. With SCB paging, we must search for non-tagged
1657 * transactions since the SCB may exist in any slot. If we're not
1658 * using SCB paging, we can use the tag as the direct index to the
1659 * SCB.
1660 */
1661snoop_tag:
1662 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1663 or SEQ_FLAGS, 0x80;
1664 }
1652 mov NONE,SCSIDATL; /* ACK Identify MSG */
1653 call phase_lock;
1654 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1655 or SEQ_FLAGS, 0x1;
1656 }
1657 cmp LASTPHASE, P_MESGIN jne not_found;
1658 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1659 or SEQ_FLAGS, 0x2;

--- 8 unchanged lines hidden (view full) ---

1668 mov SCBPTR, ARG_1;
1669 }
1670
1671/*
1672 * Ensure that the SCB the tag points to is for
1673 * an SCB transaction to the reconnecting target.
1674 */
1675setup_SCB:
1665 mov NONE,SCSIDATL; /* ACK Identify MSG */
1666 call phase_lock;
1667 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1668 or SEQ_FLAGS, 0x1;
1669 }
1670 cmp LASTPHASE, P_MESGIN jne not_found;
1671 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1672 or SEQ_FLAGS, 0x2;

--- 8 unchanged lines hidden (view full) ---

1681 mov SCBPTR, ARG_1;
1682 }
1683
1684/*
1685 * Ensure that the SCB the tag points to is for
1686 * an SCB transaction to the reconnecting target.
1687 */
1688setup_SCB:
1676 mov A, SAVED_SCSIID;
1677 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1678 or SEQ_FLAGS, 0x4;
1679 }
1689 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1690 or SEQ_FLAGS, 0x4;
1691 }
1680 cmp SCB_SCSIID, A jne not_found_cleanup_scb;
1681 mov A, SAVED_LUN;
1692 mov A, SCB_SCSIID;
1693 cmp SAVED_SCSIID, A jne not_found_cleanup_scb;
1682 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1683 or SEQ_FLAGS, 0x8;
1684 }
1694 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1695 or SEQ_FLAGS, 0x8;
1696 }
1685 cmp SCB_LUN, A jne not_found_cleanup_scb;
1697setup_SCB_id_okay:
1698 mov A, SCB_LUN;
1699 cmp SAVED_LUN, A jne not_found_cleanup_scb;
1686setup_SCB_id_lun_okay:
1687 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1688 or SEQ_FLAGS, 0x10;
1689 }
1690 test SCB_CONTROL,DISCONNECTED jz not_found_cleanup_scb;
1691 and SCB_CONTROL,~DISCONNECTED;
1692 test SCB_CONTROL, TAG_ENB jnz setup_SCB_tagged;
1693 mov A, SCBPTR;

--- 266 unchanged lines hidden (view full) ---

1960 */
1961dma_scb:
1962 mov A, SINDEX;
1963 if ((ahc->features & AHC_CMD_CHAN) != 0) {
1964 mvi DINDEX, CCHADDR;
1965 mvi HSCB_ADDR call set_64byte_addr;
1966 mov CCSCBPTR, SCBPTR;
1967 test DMAPARAMS, DIRECTION jz dma_scb_tohost;
1700setup_SCB_id_lun_okay:
1701 if ((ahc->flags & AHC_SEQUENCER_DEBUG) != 0) {
1702 or SEQ_FLAGS, 0x10;
1703 }
1704 test SCB_CONTROL,DISCONNECTED jz not_found_cleanup_scb;
1705 and SCB_CONTROL,~DISCONNECTED;
1706 test SCB_CONTROL, TAG_ENB jnz setup_SCB_tagged;
1707 mov A, SCBPTR;

--- 266 unchanged lines hidden (view full) ---

1974 */
1975dma_scb:
1976 mov A, SINDEX;
1977 if ((ahc->features & AHC_CMD_CHAN) != 0) {
1978 mvi DINDEX, CCHADDR;
1979 mvi HSCB_ADDR call set_64byte_addr;
1980 mov CCSCBPTR, SCBPTR;
1981 test DMAPARAMS, DIRECTION jz dma_scb_tohost;
1968 if ((ahc->features & AHC_SCB_BTT) != 0) {
1982 if ((ahc->flags & AHC_SCB_BTT) != 0) {
1969 mvi CCHCNT, SCB_DOWNLOAD_SIZE_64;
1970 } else {
1971 mvi CCHCNT, SCB_DOWNLOAD_SIZE;
1972 }
1973 mvi CCSCBCTL, CCARREN|CCSCBEN|CCSCBDIR|CCSCBRESET;
1974 cmp CCSCBCTL, CCSCBDONE|ARRDONE|CCARREN|CCSCBEN|CCSCBDIR jne .;
1975 jmp dma_scb_finish;
1976dma_scb_tohost:

--- 175 unchanged lines hidden --- 		1983 mvi CCHCNT, SCB_DOWNLOAD_SIZE_64;
1984 } else {
1985 mvi CCHCNT, SCB_DOWNLOAD_SIZE;
1986 }
1987 mvi CCSCBCTL, CCARREN|CCSCBEN|CCSCBDIR|CCSCBRESET;
1988 cmp CCSCBCTL, CCSCBDONE|ARRDONE|CCARREN|CCSCBEN|CCSCBDIR jne .;
1989 jmp dma_scb_finish;
1990dma_scb_tohost:

--- 175 unchanged lines hidden ---