| aic7xxx.seq (13360) | aic7xxx.seq (13386) |
|---|---|
| 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 *Modifications/enhancements: --- 27 unchanged lines hidden (view full) --- 36 *OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 *SUCH DAMAGE. 38 * 39 *FreeBSD, Twin, Wide, 2 command per target support, tagged queuing and other 40 *optimizations provided by Justin T. Gibbs (gibbs@FreeBSD.org) 41 * 42 *-M************************************************************************/ 43 | 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 *Modifications/enhancements: --- 27 unchanged lines hidden (view full) --- 36 *OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 37 *SUCH DAMAGE. 38 * 39 *FreeBSD, Twin, Wide, 2 command per target support, tagged queuing and other 40 *optimizations provided by Justin T. Gibbs (gibbs@FreeBSD.org) 41 * 42 *-M************************************************************************/ 43 |
| 44VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.26 1996/01/05 16:11:49 gibbs Exp $" | 44VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.28 1996/01/09 16:14:03 gibbs Exp $" |
| 45 46#include "../../dev/aic7xxx/aic7xxx_reg.h" 47 48/* 49 * We can't just use ACCUM in the sequencer code because it 50 * must be treated specially by the assembler, and it currently 51 * looks for the symbol 'A'. This is the only register defined 52 * the assembler's symbol space. --- 361 unchanged lines hidden (view full) --- 414 * Not in FreeBSD. the scatter list entry is only 8 bytes. 415 * 416 * struct ahc_dma_seg { 417 * physaddr addr; four bytes, little-endian order 418 * long len; four bytes, little endian order 419 * }; 420 */ 421 | 45 46#include "../../dev/aic7xxx/aic7xxx_reg.h" 47 48/* 49 * We can't just use ACCUM in the sequencer code because it 50 * must be treated specially by the assembler, and it currently 51 * looks for the symbol 'A'. This is the only register defined 52 * the assembler's symbol space. --- 361 unchanged lines hidden (view full) --- 414 * Not in FreeBSD. the scatter list entry is only 8 bytes. 415 * 416 * struct ahc_dma_seg { 417 * physaddr addr; four bytes, little-endian order 418 * long len; four bytes, little endian order 419 * }; 420 */ 421 |
| 422 mvi DINDEX,HADDR |
|
| 422/* 423 * For Linux, we must throw away four bytes since there is a 32bit gap 424 * in the middle of a struct scatterlist 425 */ | 423/* 424 * For Linux, we must throw away four bytes since there is a 32bit gap 425 * in the middle of a struct scatterlist 426 */ |
| 426#ifdef LINUX | 427#ifdef linux |
| 427 call bcopy_4_dfdat 428 mov NONE,DFDAT 429 mov NONE,DFDAT 430 mov NONE,DFDAT 431 mov NONE,DFDAT 432 call bcopy_3_dfdat /* Only support 24 bit length. */ 433#else 434/* 435 * For FreeBSD, just copy it wholesale 436 */ | 428 call bcopy_4_dfdat 429 mov NONE,DFDAT 430 mov NONE,DFDAT 431 mov NONE,DFDAT 432 mov NONE,DFDAT 433 call bcopy_3_dfdat /* Only support 24 bit length. */ 434#else 435/* 436 * For FreeBSD, just copy it wholesale 437 */ |
| 437 mvi DINDEX,HADDR | |
| 438 call bcopy_7_dfdat 439#endif 440 441/* Load STCNT as well. It is a mirror of HCNT */ 442 mvi DINDEX,STCNT 443 mvi HCNT call bcopy_3 444 test SSTAT1,PHASEMIS jz data_phase_loop 445 --- 62 unchanged lines hidden (view full) --- 508 */ 509p_mesgout_loop: 510 test SSTAT1,PHASEMIS jnz p_mesgout_phasemis 511 test SSTAT0,SPIORDY jz p_mesgout_loop 512 cmp DINDEX,1 jne p_mesgout_outb /* last byte? */ 513 mvi CLRSINT1,CLRATNO /* drop ATN */ 514p_mesgout_outb: 515 dec DINDEX | 438 call bcopy_7_dfdat 439#endif 440 441/* Load STCNT as well. It is a mirror of HCNT */ 442 mvi DINDEX,STCNT 443 mvi HCNT call bcopy_3 444 test SSTAT1,PHASEMIS jz data_phase_loop 445 --- 62 unchanged lines hidden (view full) --- 508 */ 509p_mesgout_loop: 510 test SSTAT1,PHASEMIS jnz p_mesgout_phasemis 511 test SSTAT0,SPIORDY jz p_mesgout_loop 512 cmp DINDEX,1 jne p_mesgout_outb /* last byte? */ 513 mvi CLRSINT1,CLRATNO /* drop ATN */ 514p_mesgout_outb: 515 dec DINDEX |
| 516 or CLRSINT0, CLRSPIORDY |
|
| 516 mov SCSIDATL,SINDIR 517 518p_mesgout4: 519 test DINDEX,0xff jnz p_mesgout_loop 520 521/* 522 * If the next bus phase after ATN drops is a message out, it means 523 * that the target is requesting that the last message(s) be resent. --- 352 unchanged lines hidden (view full) --- 876 * we send our ACK. 877 * 878 * The assumption here is that these are called in a particular sequence, 879 * and that REQ is already set when inb_first is called. inb_{first,next} 880 * use the same calling convention as inb. 881 */ 882 883inb_next: | 517 mov SCSIDATL,SINDIR 518 519p_mesgout4: 520 test DINDEX,0xff jnz p_mesgout_loop 521 522/* 523 * If the next bus phase after ATN drops is a message out, it means 524 * that the target is requesting that the last message(s) be resent. --- 352 unchanged lines hidden (view full) --- 877 * we send our ACK. 878 * 879 * The assumption here is that these are called in a particular sequence, 880 * and that REQ is already set when inb_first is called. inb_{first,next} 881 * use the same calling convention as inb. 882 */ 883 884inb_next: |
| 885 or CLRSINT0, CLRSPIORDY |
|
| 884 mov NONE,SCSIDATL /*dummy read from latch to ACK*/ 885inb_next_wait: 886 test SSTAT1,PHASEMIS jnz mesgin_phasemis 887 test SSTAT0,SPIORDY jz inb_next_wait /* wait for next byte */ 888inb_first: 889 mov DINDEX,SINDEX 890 mov DINDIR,SCSIBUSL ret /*read byte directly from bus*/ 891inb_last: --- 232 unchanged lines hidden --- | 886 mov NONE,SCSIDATL /*dummy read from latch to ACK*/ 887inb_next_wait: 888 test SSTAT1,PHASEMIS jnz mesgin_phasemis 889 test SSTAT0,SPIORDY jz inb_next_wait /* wait for next byte */ 890inb_first: 891 mov DINDEX,SINDEX 892 mov DINDIR,SCSIBUSL ret /*read byte directly from bus*/ 893inb_last: --- 232 unchanged lines hidden --- |