| aic7xxx.seq (21982) | aic7xxx.seq (22078) |
|---|---|
| 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, 9 *SCB paging and other optimizations: | 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, 9 *SCB paging and other optimizations: |
| 10 *Copyright (c) 1994, 1995, 1996 Justin Gibbs. All rights reserved. | 10 *Copyright (c) 1994, 1995, 1996, 1997 Justin Gibbs. All rights reserved. |
| 11 * 12 *Redistribution and use in source and binary forms, with or without 13 *modification, are permitted provided that the following conditions 14 *are met: 15 *1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions, and the following disclaimer. 17 *2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the --- 15 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 | 11 * 12 *Redistribution and use in source and binary forms, with or without 13 *modification, are permitted provided that the following conditions 14 *are met: 15 *1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions, and the following disclaimer. 17 *2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the --- 15 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 "$FreeBSD: head/sys/dev/aic7xxx/aic7xxx.seq 21982 1997-01-24 21:57:47Z gibbs $" | 42VERSION AIC7XXX_SEQ_VER "$FreeBSD: head/sys/dev/aic7xxx/aic7xxx.seq 22078 1997-01-29 05:19:46Z gibbs $" |
| 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 --- 96 unchanged lines hidden (view full) --- 147 * is not ideal for devices that have multiple luns active at the same 148 * time, it is faster than looping through all SCB's looking for active 149 * commands. We also don't have enough spare SCB space for us to store the 150 * SCBID of the currently busy transaction for each target/lun making it 151 * impossible to link up the SCBs. 152 */ 153test_busy: 154 test SCB_CONTROL, TAG_ENB jnz start_scb | 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 --- 96 unchanged lines hidden (view full) --- 147 * is not ideal for devices that have multiple luns active at the same 148 * time, it is faster than looping through all SCB's looking for active 149 * commands. We also don't have enough spare SCB space for us to store the 150 * SCBID of the currently busy transaction for each target/lun making it 151 * impossible to link up the SCBs. 152 */ 153test_busy: 154 test SCB_CONTROL, TAG_ENB jnz start_scb |
| 155 mvi SEQCTL,0x50 /* PAUSEDIS|FASTMODE */ |
|
| 155 mov SAVED_SCBPTR, SCBPTR 156 mov SCB_TCL call index_untagged_scb | 156 mov SAVED_SCBPTR, SCBPTR 157 mov SCB_TCL call index_untagged_scb |
| 157 mvi SEQCTL,0x50 /* PAUSEDIS|FASTMODE */ | |
| 158 mov ARG_1, SINDIR /* 159 * ARG_1 should 160 * now have the SCB ID of 161 * any active, non-tagged, 162 * command for this target. 163 */ 164 cmp ARG_1, SCB_LIST_NULL je make_busy 165 test FLAGS, PAGESCBS jz simple_busy_link --- 20 unchanged lines hidden (view full) --- 186 mvi SEQCTL,0x10 /* FASTMODE */ 187 jmp poll_for_work 188simple_busy_link: 189 mov SCBPTR, ARG_1 190 mov SCB_LINKED_NEXT, CUR_SCBID 191 mvi SEQCTL,0x10 /* FASTMODE */ 192 jmp poll_for_work 193make_busy: | 158 mov ARG_1, SINDIR /* 159 * ARG_1 should 160 * now have the SCB ID of 161 * any active, non-tagged, 162 * command for this target. 163 */ 164 cmp ARG_1, SCB_LIST_NULL je make_busy 165 test FLAGS, PAGESCBS jz simple_busy_link --- 20 unchanged lines hidden (view full) --- 186 mvi SEQCTL,0x10 /* FASTMODE */ 187 jmp poll_for_work 188simple_busy_link: 189 mov SCBPTR, ARG_1 190 mov SCB_LINKED_NEXT, CUR_SCBID 191 mvi SEQCTL,0x10 /* FASTMODE */ 192 jmp poll_for_work 193make_busy: |
| 194 mvi SEQCTL,0x10 /* FASTMODE */ | |
| 195 mov DINDIR, CUR_SCBID 196 mov SCBPTR, SAVED_SCBPTR | 194 mov DINDIR, CUR_SCBID 195 mov SCBPTR, SAVED_SCBPTR |
| 196 mvi SEQCTL,0x10 /* FASTMODE */ |
|
| 197 198start_scb: 199 /* 200 * Place us on the waiting list in case our selection 201 * doesn't win during bus arbitration. 202 */ 203 mov SCB_NEXT,WAITING_SCBH 204 mov WAITING_SCBH, SCBPTR --- 295 unchanged lines hidden (view full) --- 500 */ 501 mvi DINDEX, HADDR0 502 mvi SCB_CMDPTR call bcopy_5 503 clr HCNT1 504 clr HCNT2 505 506 call set_stcnt_from_hcnt 507 | 197 198start_scb: 199 /* 200 * Place us on the waiting list in case our selection 201 * doesn't win during bus arbitration. 202 */ 203 mov SCB_NEXT,WAITING_SCBH 204 mov WAITING_SCBH, SCBPTR --- 295 unchanged lines hidden (view full) --- 500 */ 501 mvi DINDEX, HADDR0 502 mvi SCB_CMDPTR call bcopy_5 503 clr HCNT1 504 clr HCNT2 505 506 call set_stcnt_from_hcnt 507 |
| 508 mvi DFCNTRL, 0x3d /* SCSIEN|SDMAEN|HDMAEN | 508 mvi 0x3d call dma /* SCSIEN|SDMAEN|HDMAEN |
| 509 * |DIRECTION|FIFORESET 510 */ | 509 * |DIRECTION|FIFORESET 510 */ |
| 511p_command_dma: 512 test SSTAT0, SDONE jnz p_command_dma_done 513 test SSTAT1, PHASEMIS jz p_command_dma 514 test SSTAT0, SDONE jnz p_command_dma_done 515 clr DFCNTRL | |
| 516 jmp ITloop | 511 jmp ITloop |
| 517p_command_dma_done: 518 and DFCNTRL, 0xc7 /* ~(SCSIEN|SDMAEN|HDMAEN) */ 519p_command_dma_clear: 520 test DFCNTRL, 0x38 jnz p_command_dma_clear 521 jmp ITloop | |
| 522 523/* 524 * Status phase. Wait for the data byte to appear, then read it 525 * and store it into the SCB. 526 */ 527p_status: 528 call assert 529 --- 410 unchanged lines hidden (view full) --- 940 * actually off first lest we get an ILLSADDR. 941 */ 942dma5: 943 /* Don't clobber an inprogress host data transfer */ 944 test DFSTATUS, MREQPEND jnz dma5 945 /* disable DMA */ 946 and DFCNTRL, 0xc7 /* ~(SCSIEN|SDMAEN|HDMAEN|DIRECTION) */ 947dma6: | 512 513/* 514 * Status phase. Wait for the data byte to appear, then read it 515 * and store it into the SCB. 516 */ 517p_status: 518 call assert 519 --- 410 unchanged lines hidden (view full) --- 930 * actually off first lest we get an ILLSADDR. 931 */ 932dma5: 933 /* Don't clobber an inprogress host data transfer */ 934 test DFSTATUS, MREQPEND jnz dma5 935 /* disable DMA */ 936 and DFCNTRL, 0xc7 /* ~(SCSIEN|SDMAEN|HDMAEN|DIRECTION) */ 937dma6: |
| 948 test DFCNTRL, HDMAENACK jnz dma6 | 938 test DFCNTRL, 0x38 jnz dma6 /* (SCSIEN|SDMAEN|HDMAEN|DIRECTION) */ |
| 949return: 950 ret 951 952/* 953 * Common SCSI initialization for selection and reselection. Expects 954 * the target SCSI ID to be in the upper four bits of SINDEX, and A's 955 * contents are stomped on return. 956 */ --- 39 unchanged lines hidden (view full) --- 996 mov ALLZEROS call get_free_or_disc_scb 997 cmp ARG_1, SCB_LIST_NULL jne find_dma_scb 998 mov SAVED_TCL call index_untagged_scb 999 mov ARG_1, SINDIR /* SCBID of SCB to fetch */ 1000find_dma_scb: 1001 mvi DMAPARAMS, 0xd /* HDMAEN|DIRECTION|FIFORESET */ 1002 mov ARG_1 call dma_scb 1003 test SCB_CONTROL, ABORT_SCB jz return | 939return: 940 ret 941 942/* 943 * Common SCSI initialization for selection and reselection. Expects 944 * the target SCSI ID to be in the upper four bits of SINDEX, and A's 945 * contents are stomped on return. 946 */ --- 39 unchanged lines hidden (view full) --- 986 mov ALLZEROS call get_free_or_disc_scb 987 cmp ARG_1, SCB_LIST_NULL jne find_dma_scb 988 mov SAVED_TCL call index_untagged_scb 989 mov ARG_1, SINDIR /* SCBID of SCB to fetch */ 990find_dma_scb: 991 mvi DMAPARAMS, 0xd /* HDMAEN|DIRECTION|FIFORESET */ 992 mov ARG_1 call dma_scb 993 test SCB_CONTROL, ABORT_SCB jz return |
| 994 call add_scb_to_free_list |
|
| 1004find_error: 1005 mvi SINDEX, SCB_LIST_NULL ret 1006findBySCBID: 1007 mov A, ARG_1 /* Tag passed in ARG_1 */ 1008 cmp SCB_TAG,A jne findSCB1 /* Found it? */ 1009foundSCB: 1010 test SCB_CONTROL, ABORT_SCB jnz find_error 1011 test FLAGS,PAGESCBS jz return --- 155 unchanged lines hidden --- | 995find_error: 996 mvi SINDEX, SCB_LIST_NULL ret 997findBySCBID: 998 mov A, ARG_1 /* Tag passed in ARG_1 */ 999 cmp SCB_TAG,A jne findSCB1 /* Found it? */ 1000foundSCB: 1001 test SCB_CONTROL, ABORT_SCB jnz find_error 1002 test FLAGS,PAGESCBS jz return --- 155 unchanged lines hidden --- |