| aic7xxx.seq (19921) | aic7xxx.seq (20117) |
|---|---|
| 1/*+M*********************************************************************** 2 *Adaptec 274x/284x/294x device driver for Linux and FreeBSD. 3 * 4 *Copyright (c) 1994 John Aycock 5 * The University of Calgary Department of Computer Science. 6 * All rights reserved. 7 * 8 *FreeBSD, Twin, Wide, 2 command per target support, tagged queuing, --- 25 unchanged lines hidden (view full) --- 34 *OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 *HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 *LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 *OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 *SUCH DAMAGE. 39 * 40 *-M************************************************************************/ 41 | 1/*+M*********************************************************************** 2 *Adaptec 274x/284x/294x device driver for Linux and FreeBSD. 3 * 4 *Copyright (c) 1994 John Aycock 5 * The University of Calgary Department of Computer Science. 6 * All rights reserved. 7 * 8 *FreeBSD, Twin, Wide, 2 command per target support, tagged queuing, --- 25 unchanged lines hidden (view full) --- 34 *OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 35 *HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 36 *LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 37 *OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 38 *SUCH DAMAGE. 39 * 40 *-M************************************************************************/ 41 |
| 42VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.50 1996/11/21 06:18:33 gibbs Exp $" | 42VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.51 1996/11/22 08:25:20 gibbs Exp $" |
| 43 44#if defined(__NetBSD__) 45#include "../../../../dev/ic/aic7xxxreg.h" 46#include "../../../../scsi/scsi_message.h" 47#elif defined(__FreeBSD__) 48#include "../../dev/aic7xxx/aic7xxx_reg.h" 49#include "../../scsi/scsi_message.h" 50#endif --- 28 unchanged lines hidden (view full) --- 79 * We assume that the kernel driver may reset us at any time, even in the 80 * middle of a DMA, so clear DFCNTRL too. 81 */ 82reset: 83 clr DFCNTRL 84 clr SCSISIGO /* De-assert BSY */ 85 86p_busfree: | 43 44#if defined(__NetBSD__) 45#include "../../../../dev/ic/aic7xxxreg.h" 46#include "../../../../scsi/scsi_message.h" 47#elif defined(__FreeBSD__) 48#include "../../dev/aic7xxx/aic7xxx_reg.h" 49#include "../../scsi/scsi_message.h" 50#endif --- 28 unchanged lines hidden (view full) --- 79 * We assume that the kernel driver may reset us at any time, even in the 80 * middle of a DMA, so clear DFCNTRL too. 81 */ 82reset: 83 clr DFCNTRL 84 clr SCSISIGO /* De-assert BSY */ 85 86p_busfree: |
| 87 mvi LASTPHASE, P_BUSFREE 88 89start: 90 and FLAGS,0x07 /* clear target specific flags */ | |
| 91 mvi SCSISEQ,ENRSELI /* Always allow reselection */ 92 clr SCSIRATE /* 93 * We don't know the target we will 94 * connect to, so default to narrow 95 * transfers to avoid parity problems. 96 */ | 87 mvi SCSISEQ,ENRSELI /* Always allow reselection */ 88 clr SCSIRATE /* 89 * We don't know the target we will 90 * connect to, so default to narrow 91 * transfers to avoid parity problems. 92 */ |
| 93 mvi LASTPHASE, P_BUSFREE 94 and FLAGS,0x07 /* clear target specific flags */ |
|
| 97poll_for_work: 98 /* 99 * Are we a twin channel device? 100 * For fairness, we check the other bus first, 101 * since we just finished a transaction on the 102 * current channel. 103 */ 104 test FLAGS,TWIN_BUS jz start2 --- 440 unchanged lines hidden (view full) --- 545 */ 546p_mesgout_loop: 547 test SSTAT0,SPIORDY jz p_mesgout_loop 548 test SSTAT1,PHASEMIS jnz p_mesgout_done 549/* 550 * If the next bus phase after ATN drops is a message out, it means 551 * that the target is requesting that the last message(s) be resent. 552 */ | 95poll_for_work: 96 /* 97 * Are we a twin channel device? 98 * For fairness, we check the other bus first, 99 * since we just finished a transaction on the 100 * current channel. 101 */ 102 test FLAGS,TWIN_BUS jz start2 --- 440 unchanged lines hidden (view full) --- 543 */ 544p_mesgout_loop: 545 test SSTAT0,SPIORDY jz p_mesgout_loop 546 test SSTAT1,PHASEMIS jnz p_mesgout_done 547/* 548 * If the next bus phase after ATN drops is a message out, it means 549 * that the target is requesting that the last message(s) be resent. 550 */ |
| 553p_mesgout_dropatn: 554 cmp DINDEX,1 jne p_mesgout_testretry /* last byte? */ 555 mvi CLRSINT1,CLRATNO /* drop ATN */ | |
| 556p_mesgout_testretry: | 551p_mesgout_testretry: |
| 557 test DINDEX,0xff jnz p_mesgout_outb | 552 test DINDEX,0xff jnz p_mesgout_dropatn |
| 558 or SCSISIGO,ATNO /* turn on ATN for the retry */ 559 jmp p_mesgout_start | 553 or SCSISIGO,ATNO /* turn on ATN for the retry */ 554 jmp p_mesgout_start |
| 555p_mesgout_dropatn: 556 cmp DINDEX,1 jne p_mesgout_outb /* last byte? */ 557 mvi CLRSINT1,CLRATNO /* drop ATN */ |
|
| 560p_mesgout_outb: 561 dec DINDEX 562 mvi CLRSINT0, CLRSPIORDY 563 mov SCSIDATL,SINDIR 564 jmp p_mesgout_loop 565 566p_mesgout_done: 567 mvi CLRSINT1,CLRATNO /* Be sure to turn ATNO off */ --- 204 unchanged lines hidden (view full) --- 772 * If we get one, we use the tag returned to switch to find the proper 773 * SCB. With SCB paging, this requires using findSCB for both tagged 774 * and non-tagged transactions since the SCB may exist in any slot. 775 * If we're not using SCB paging, we can use the tag as the direct 776 * index to the SCB. 777 */ 778 mvi ARG_1,SCB_LIST_NULL /* Default to no-tag */ 779snoop_tag_loop: | 558p_mesgout_outb: 559 dec DINDEX 560 mvi CLRSINT0, CLRSPIORDY 561 mov SCSIDATL,SINDIR 562 jmp p_mesgout_loop 563 564p_mesgout_done: 565 mvi CLRSINT1,CLRATNO /* Be sure to turn ATNO off */ --- 204 unchanged lines hidden (view full) --- 770 * If we get one, we use the tag returned to switch to find the proper 771 * SCB. With SCB paging, this requires using findSCB for both tagged 772 * and non-tagged transactions since the SCB may exist in any slot. 773 * If we're not using SCB paging, we can use the tag as the direct 774 * index to the SCB. 775 */ 776 mvi ARG_1,SCB_LIST_NULL /* Default to no-tag */ 777snoop_tag_loop: |
| 780 test SSTAT0,SPIORDY jz snoop_tag_loop | 778 test SSTAT1,REQINIT jz snoop_tag_loop |
| 781 test SSTAT1,PHASEMIS jnz use_findSCB 782 mvi A call inb_first 783 cmp A,MSG_SIMPLE_Q_TAG jne use_findSCB 784get_tag: 785 or FLAGS, TAGGED_SCB 786 mvi ARG_1 call inb_next /* tag value */ 787/* 788 * See if the tag is in range. The tag is < SCBCOUNT if we add --- 361 unchanged lines hidden --- | 779 test SSTAT1,PHASEMIS jnz use_findSCB 780 mvi A call inb_first 781 cmp A,MSG_SIMPLE_Q_TAG jne use_findSCB 782get_tag: 783 or FLAGS, TAGGED_SCB 784 mvi ARG_1 call inb_next /* tag value */ 785/* 786 * See if the tag is in range. The tag is < SCBCOUNT if we add --- 361 unchanged lines hidden --- |