| aic7xxx.seq (28169) | aic7xxx.seq (29897) |
|---|---|
| 1/* 2 * Adaptec 274x/284x/294x device driver firmware for Linux and FreeBSD. 3 * 4 * Copyright (c) 1994-1997 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 --- 21 unchanged lines hidden (view full) --- 30 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * | 1/* 2 * Adaptec 274x/284x/294x device driver firmware for Linux and FreeBSD. 3 * 4 * Copyright (c) 1994-1997 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 --- 21 unchanged lines hidden (view full) --- 30 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 * |
| 38 * $Id: aic7xxx.seq,v 1.74 1997/06/27 19:38:42 gibbs Exp $ | 38 * $Id: aic7xxx.seq,v 1.75 1997/08/13 17:02:28 gibbs Exp $ |
| 39 */ 40 41#include <dev/aic7xxx/aic7xxx.reg> 42#include <scsi/scsi_message.h> 43 44/* 45 * A few words on the waiting SCB list: 46 * After starting the selection hardware, we check for reconnecting targets --- 36 unchanged lines hidden (view full) --- 83 test SSTAT0,SELDO jnz select; 84 test SSTAT0,SELDI jnz reselect; 85 test SCSISEQ, ENSELO jnz poll_for_work; 86 xor SBLKCTL,SELBUSB; /* Toggle back */ 87.endif 88 cmp WAITING_SCBH,SCB_LIST_NULL jne start_waiting; 89test_queue: 90 /* Has the driver posted any work for us? */ | 39 */ 40 41#include <dev/aic7xxx/aic7xxx.reg> 42#include <scsi/scsi_message.h> 43 44/* 45 * A few words on the waiting SCB list: 46 * After starting the selection hardware, we check for reconnecting targets --- 36 unchanged lines hidden (view full) --- 83 test SSTAT0,SELDO jnz select; 84 test SSTAT0,SELDI jnz reselect; 85 test SCSISEQ, ENSELO jnz poll_for_work; 86 xor SBLKCTL,SELBUSB; /* Toggle back */ 87.endif 88 cmp WAITING_SCBH,SCB_LIST_NULL jne start_waiting; 89test_queue: 90 /* Has the driver posted any work for us? */ |
| 91 mov A, QCNTMASK; 92 test QINCNT,A jz poll_for_work; | 91 test QINCNT,QCNTMASK jz poll_for_work; |
| 93 94/* 95 * We have at least one queued SCB now and we don't have any 96 * SCBs in the list of SCBs awaiting selection. If we have 97 * any SCBs available for use, pull the tag from the QINFIFO 98 * and get to work on it. 99 */ 100.if ( SCB_PAGING ) --- 461 unchanged lines hidden (view full) --- 562 clr MSG_LEN; /* no active msg */ 563 jmp ITloop; 564 565/* 566 * Message in phase. Bytes are read using Automatic PIO mode. 567 */ 568p_mesgin: 569 mvi ACCUM call inb_first; /* read the 1st message byte */ | 92 93/* 94 * We have at least one queued SCB now and we don't have any 95 * SCBs in the list of SCBs awaiting selection. If we have 96 * any SCBs available for use, pull the tag from the QINFIFO 97 * and get to work on it. 98 */ 99.if ( SCB_PAGING ) --- 461 unchanged lines hidden (view full) --- 561 clr MSG_LEN; /* no active msg */ 562 jmp ITloop; 563 564/* 565 * Message in phase. Bytes are read using Automatic PIO mode. 566 */ 567p_mesgin: 568 mvi ACCUM call inb_first; /* read the 1st message byte */ |
| 570 mov REJBYTE,A; /* save it for the driver */ | |
| 571 572 test A,MSG_IDENTIFYFLAG jnz mesgin_identify; 573 cmp A,MSG_DISCONNECT je mesgin_disconnect; 574 cmp A,MSG_SAVEDATAPOINTER je mesgin_sdptrs; 575 cmp ALLZEROS,A je mesgin_complete; 576 cmp A,MSG_RESTOREPOINTERS je mesgin_rdptrs; 577 cmp A,MSG_EXTENDED je mesgin_extended; 578 cmp A,MSG_MESSAGE_REJECT je mesgin_reject; --- 64 unchanged lines hidden (view full) --- 643 644complete: 645 /* Post the SCB and issue an interrupt */ 646.if ( SCB_PAGING ) 647 /* 648 * Spin loop until there is space 649 * in the QOUTFIFO. 650 */ | 569 570 test A,MSG_IDENTIFYFLAG jnz mesgin_identify; 571 cmp A,MSG_DISCONNECT je mesgin_disconnect; 572 cmp A,MSG_SAVEDATAPOINTER je mesgin_sdptrs; 573 cmp ALLZEROS,A je mesgin_complete; 574 cmp A,MSG_RESTOREPOINTERS je mesgin_rdptrs; 575 cmp A,MSG_EXTENDED je mesgin_extended; 576 cmp A,MSG_MESSAGE_REJECT je mesgin_reject; --- 64 unchanged lines hidden (view full) --- 641 642complete: 643 /* Post the SCB and issue an interrupt */ 644.if ( SCB_PAGING ) 645 /* 646 * Spin loop until there is space 647 * in the QOUTFIFO. 648 */ |
| 651 mov A, FIFODEPTH; 652 cmp CMDOUTCNT, A je .; | 649 cmp CMDOUTCNT, FIFODEPTH je .; |
| 653 inc CMDOUTCNT; 654.endif 655 mov QOUTFIFO,SCB_TAG; 656 mvi INTSTAT,CMDCMPLT; 657 test SCB_CONTROL, ABORT_SCB jz dma_next_scb; 658 mvi INTSTAT, ABORT_CMDCMPLT; 659 660dma_next_scb: --- 136 unchanged lines hidden (view full) --- 797get_tag: 798 or SEQ_FLAGS, TAGGED_SCB; 799 mvi ARG_1 call inb_next; /* tag value */ 800/* 801 * See if the tag is in range. The tag is < SCBCOUNT if we add 802 * the complement of SCBCOUNT to the incomming tag and there is 803 * no carry. 804 */ | 650 inc CMDOUTCNT; 651.endif 652 mov QOUTFIFO,SCB_TAG; 653 mvi INTSTAT,CMDCMPLT; 654 test SCB_CONTROL, ABORT_SCB jz dma_next_scb; 655 mvi INTSTAT, ABORT_CMDCMPLT; 656 657dma_next_scb: --- 136 unchanged lines hidden (view full) --- 794get_tag: 795 or SEQ_FLAGS, TAGGED_SCB; 796 mvi ARG_1 call inb_next; /* tag value */ 797/* 798 * See if the tag is in range. The tag is < SCBCOUNT if we add 799 * the complement of SCBCOUNT to the incomming tag and there is 800 * no carry. 801 */ |
| 805 mov A,COMP_SCBCOUNT; 806 add SINDEX,A,ARG_1; | 802 add SINDEX,COMP_SCBCOUNT,ARG_1; |
| 807 jc not_found; 808 809.if ! ( SCB_PAGING ) 810index_by_tag: 811 mov SCBPTR,ARG_1; 812 mov A, SAVED_TCL; 813 cmp SCB_TCL,A jne not_found; 814 test SCB_CONTROL,TAG_ENB jz not_found; --- 156 unchanged lines hidden (view full) --- 971 */ 972findSCB: 973 mov SCBPTR,SINDEX; /* switch to next SCB */ 974 mov A, ARG_1; /* Tag passed in ARG_1 */ 975 cmp SCB_TAG,A jne findSCB_loop; 976 test SCB_CONTROL,DISCONNECTED jnz foundSCB;/*should be disconnected*/ 977findSCB_loop: 978 inc SINDEX; | 803 jc not_found; 804 805.if ! ( SCB_PAGING ) 806index_by_tag: 807 mov SCBPTR,ARG_1; 808 mov A, SAVED_TCL; 809 cmp SCB_TCL,A jne not_found; 810 test SCB_CONTROL,TAG_ENB jz not_found; --- 156 unchanged lines hidden (view full) --- 967 */ 968findSCB: 969 mov SCBPTR,SINDEX; /* switch to next SCB */ 970 mov A, ARG_1; /* Tag passed in ARG_1 */ 971 cmp SCB_TAG,A jne findSCB_loop; 972 test SCB_CONTROL,DISCONNECTED jnz foundSCB;/*should be disconnected*/ 973findSCB_loop: 974 inc SINDEX; |
| 979 mov A,SCBCOUNT; 980 cmp SINDEX,A jne findSCB; | 975 cmp SINDEX,SCBCOUNT jne findSCB; |
| 981/* 982 * We didn't find it. If we're paging, pull an SCB and DMA down the 983 * one we want. If we aren't paging or the SCB we dma down has the 984 * abort flag set, return not found. 985 */ 986 mov ALLZEROS call get_free_or_disc_scb; 987 mvi DMAPARAMS, HDMAEN|DIRECTION|FIFORESET; 988 mov ARG_1 call dma_scb; --- 168 unchanged lines hidden --- | 976/* 977 * We didn't find it. If we're paging, pull an SCB and DMA down the 978 * one we want. If we aren't paging or the SCB we dma down has the 979 * abort flag set, return not found. 980 */ 981 mov ALLZEROS call get_free_or_disc_scb; 982 mvi DMAPARAMS, HDMAEN|DIRECTION|FIFORESET; 983 mov ARG_1 call dma_scb; --- 168 unchanged lines hidden --- |