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Implement SCB paging. This allows up to 255 active commands on
aic7770 >= Rev E, aic7850, aic7860, aic7870, and ai7880 based controllers. Make findSCB safer for non-tagged commands when tagged commands are active on the controller. The symptoms of this problem were "Overlapped commands attempted" messages during error recovery attempts. Compact scratch ram usage. This leaves 8 bytes free for future use. Clean up some comments. aic7xxx_reg.h: Update my copyright.
This commit is contained in:
Justin T. Gibbs
parent
8e15bdee3e
commit
0a44712261
Notes:
svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=15328
2 changed files with 189 additions and 108 deletions
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@ -5,8 +5,9 @@
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* The University of Calgary Department of Computer Science.
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* All rights reserved.
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*
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*Modifications/enhancements:
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* Copyright (c) 1994, 1995, 1996 Justin Gibbs. All rights reserved.
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*FreeBSD, Twin, Wide, 2 command per target support, tagged queuing,
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*SCB paging and other optimizations:
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*Copyright (c) 1994, 1995, 1996 Justin Gibbs. All rights reserved.
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*
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*Redistribution and use in source and binary forms, with or without
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*modification, are permitted provided that the following conditions
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@ -36,12 +37,9 @@
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*OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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*SUCH DAMAGE.
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*
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*FreeBSD, Twin, Wide, 2 command per target support, tagged queuing and other
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*optimizations provided by Justin T. Gibbs (gibbs@FreeBSD.org)
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*
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*-M************************************************************************/
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VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.31 1996/03/10 07:02:31 gibbs Exp $"
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VERSION AIC7XXX_SEQ_VER "$Id: aic7xxx.seq,v 1.32 1996/03/31 03:02:33 gibbs Exp $"
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#include "../../dev/aic7xxx/aic7xxx_reg.h"
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@ -79,6 +77,7 @@ reset:
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* We jump to start after every bus free.
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*/
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start:
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and FLAGS,0x0f /* clear target specific flags */
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mvi SCSISEQ,ENRSELI /* Always allow reselection */
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poll_for_work:
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/*
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@ -152,7 +151,7 @@ test_a:
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or ACTIVE_A,A
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start_scb:
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mov SCB_NEXT_WAITING,WAITING_SCBH
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mov SCB_NEXT,WAITING_SCBH
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mov WAITING_SCBH, SCBPTR
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start_scb2:
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and SINDEX,0xf7,SBLKCTL /* Clear the channel select bit */
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@ -199,16 +198,15 @@ mk_identify:
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test SCB_CONTROL,0xb0 jz !message /* WDTR, SDTR or TAG?? */
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/*
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* Tag Message if Tag enabled in SCB control block. Use SCBPTR as the tag
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* value
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* Send a tag message if TAG_ENB is set in the SCB control block.
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* Use SCB_TAG (the position in the kernel's SCB array) as the tag value.
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*/
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mk_tag:
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mvi DINDEX, MSG1
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test SCB_CONTROL,TAG_ENB jz mk_tag_done
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and A,0x23,SCB_CONTROL
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mov DINDIR,A
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mov DINDIR,SCBPTR
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and DINDIR,0x23,SCB_CONTROL
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mov DINDIR,SCB_TAG
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add MSG_LEN,COMP_MSG0,DINDEX /* update message length */
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@ -230,7 +228,6 @@ wait_for_selection:
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reselect:
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clr MSG_LEN /* Don't have anything in the mesg buffer */
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mov SELID call initialize_scsiid
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and FLAGS,0x03 /* clear target specific flags */
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or FLAGS,RESELECTED
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jmp select2
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@ -241,8 +238,8 @@ reselect:
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* SCB is used, so don't bother with it now.
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*/
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select:
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and FLAGS,0x03 /* Clear target flags */
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mov WAITING_SCBH,SCB_NEXT_WAITING
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mov WAITING_SCBH,SCB_NEXT
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or FLAGS,SELECTED
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select2:
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/*
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* Set CLRCHN here before the target has entered a data transfer mode -
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@ -343,7 +340,7 @@ sg_advance:
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* If the working value of the SG count is nonzero, then
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* we need to load a new set of values.
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*
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* This, like all DMA's, assumes a little-endian host data storage.
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* This, like all DMA's, assumes little-endian host data storage.
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*/
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sg_load:
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clr HCNT2
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@ -425,15 +422,13 @@ data_phase_finish:
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jmp ITloop
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/*
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* Command phase. Set up the DMA registers and let 'er rip - the
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* two bytes after the SCB SCSI_cmd_length are zeroed by the driver,
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* so we can copy those three bytes directly into HCNT.
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* Command phase. Set up the DMA registers and let 'er rip.
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*/
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p_command:
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call assert
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/*
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* Load HADDR and HCNT. We can do this in one bcopy since they are neighbors
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* Load HADDR and HCNT.
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*/
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mov HADDR0, SCB_CMDPTR0
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mov HADDR1, SCB_CMDPTR1
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@ -460,7 +455,7 @@ p_status:
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jmp mesgin_done
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/*
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* Message out phase. If there is no active message, but the target
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* Message out phase. If there is not an active message, but the target
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* took us into this phase anyway, build a no-op message and send it.
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*/
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p_mesgout:
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@ -510,7 +505,7 @@ p_mesgout_snoop:
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jmp ITloop
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p_mesgout_phasemis:
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mvi CLRSINT1,CLRATNO /* Be sure turn ATNO off */
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mvi CLRSINT1,CLRATNO /* Be sure to turn ATNO off */
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p_mesgout_done:
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clr MSG_LEN /* no active msg */
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jmp ITloop
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@ -551,20 +546,20 @@ mesgin_done:
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mesgin_complete:
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/*
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* We got a "command complete" message, so put the SCB pointer
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* into QUEUEOUT, and trigger a completion interrupt.
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* Check status for non zero return and interrupt driver if needed
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* This allows the driver to interpret errors only when they occur
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* instead of always uploading the scb. If the status is SCSI_CHECK,
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* the driver will download a new scb requesting sense to replace
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* the old one, modify the "waiting for selection" SCB list and set
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* RETURN_1 to 0x80. If RETURN_1 is set to 0x80 the sequencer imediately
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* jumps to main loop where it will run down the waiting SCB list.
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* If the kernel driver does not wish to request sense, it need
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* only clear RETURN_1, and the command is allowed to complete. We don't
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* bother to post to the QOUTFIFO in the error case since it would require
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* extra work in the kernel driver to ensure that the entry was removed
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* before the command complete code tried processing it.
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* We got a "command complete" message, so put the SCB_TAG into QUEUEOUT,
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* and trigger a completion interrupt. Check status for non zero return
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* and interrupt driver if needed. This allows the driver to interpret
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* errors only when they occur instead of always uploading the scb. If
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* the status is SCSI_CHECK, the driver will download a new scb requesting
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* sense to replace the old one, modify the "waiting for selection" SCB list
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* and set RETURN_1 to SEND_SENSE. If RETURN_1 is set to SEND_SENSE the
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* sequencer imediately jumps to main loop where it will run down the waiting
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* SCB list and process the sense request. If the kernel driver does not
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* wish to request sense, it need only clear RETURN_1, and the command is
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* allowed to complete. We don't bother to post to the QOUTFIFO in the
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* error case since it would require extra work in the kernel driver to
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* ensure that the entry was removed before the command complete code tried
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* processing it.
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*
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* First check for residuals
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*/
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@ -612,7 +607,7 @@ test_immediate:
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mvi INTSTAT,IMMEDDONE
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jmp start
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complete:
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mov QOUTFIFO,SCBPTR
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mov QOUTFIFO,SCB_TAG
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mvi INTSTAT,CMDCMPLT
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jmp mesgin_done
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@ -626,10 +621,10 @@ complete:
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*/
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mesgin_extended:
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mvi ARG_1 call inb_next /* extended message length */
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mvi A call inb_next /* extended message code */
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mvi REJBYTE_EXT call inb_next /* extended message code */
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cmp A,MSG_SDTR je p_mesginSDTR
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cmp A,MSG_WDTR je p_mesginWDTR
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cmp REJBYTE_EXT,MSG_SDTR je p_mesginSDTR
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cmp REJBYTE_EXT,MSG_WDTR je p_mesginWDTR
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jmp rej_mesgin
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p_mesginWDTR:
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@ -660,6 +655,7 @@ p_mesginSDTR:
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* Requested SDTR too small
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* Reject it.
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*/
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clr ARG_1 /* Use the scratch ram rate */
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mvi DINDEX, MSG0
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mvi MSG0 call mk_sdtr
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or SCSISIGO,ATNO /* turn on ATNO */
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@ -671,6 +667,22 @@ p_mesginSDTR:
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*/
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mesgin_disconnect:
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or SCB_CONTROL,DISCONNECTED
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test FLAGS, PAGESCBS jz mesgin_done
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/*
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* Link this SCB into the DISCONNECTED list. This list holds the
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* candidates for paging out an SCB if one is needed for a new command.
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* Modifying the disconnected list is a critical(pause dissabled) section.
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*/
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mvi SCB_PREV, SCB_LIST_NULL
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mvi SEQCTL,0x50 /* PAUSEDIS|FASTMODE */
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mov SCB_NEXT, DISCONNECTED_SCBH
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mov DISCONNECTED_SCBH, SCBPTR
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cmp SCB_NEXT,SCB_LIST_NULL je linkdone
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mov SCBPTR,SCB_NEXT
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mov SCB_PREV,DISCONNECTED_SCBH
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mov SCBPTR,DISCONNECTED_SCBH
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linkdone:
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mvi SEQCTL,0x10 /* !PAUSEDIS|FASTMODE */
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jmp mesgin_done
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/*
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@ -688,7 +700,7 @@ mesgin_sdptrs:
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* code do the rest.
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*/
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mesgin_rdptrs:
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and FLAGS,0xfb /*
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and FLAGS,0xef /*
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* !DPHASE we'll reload them
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* the next time through
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*/
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@ -711,21 +723,19 @@ mesgin_identify:
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/*
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* Here we "snoop" the bus looking for a SIMPLE QUEUE TAG message.
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* If we get one, we use the tag returned to switch to the proper
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* SCB. Otherwise, we just use the findSCB method.
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* If we get one, we use the tag returned to switch to find the proper
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* SCB. With SCB paging, this requires using findSCB for both tagged
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* and non-tagged transactions since the SCB may exist in any slot.
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* If we're not using SCB paging, we can use the tag as the direct
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* index to the SCB.
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*/
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mvi ARG_1,SCB_LIST_NULL /* Default to no-tag */
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snoop_tag_loop:
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test SSTAT1,BUSFREE jnz use_findSCB
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test SSTAT1,REQINIT jz snoop_tag_loop
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test SSTAT1,PHASEMIS jnz use_findSCB
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mvi A call inb_first
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cmp A,MSG_SIMPLE_TAG je get_tag
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use_findSCB:
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mov ALLZEROS call findSCB /* Have to search */
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setup_SCB:
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and SCB_CONTROL,0xfb /* clear disconnect bit in SCB */
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or FLAGS,IDENTIFY_SEEN /* make note of IDENTIFY */
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jmp ITloop
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cmp A,MSG_SIMPLE_TAG jne use_findSCB
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get_tag:
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mvi ARG_1 call inb_next /* tag value */
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/*
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@ -738,19 +748,29 @@ get_tag:
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jc abort_tag
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/*
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* Ensure that the SCB the tag points to is for a SCB transaction
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* Ensure that the SCB the tag points to is for an SCB transaction
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* to the reconnecting target.
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*/
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test FLAGS, PAGESCBS jz index_by_tag
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call inb_last /* Ack Tag */
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use_findSCB:
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mov ALLZEROS call findSCB /* Have to search */
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setup_SCB:
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and SCB_CONTROL,0xfb /* clear disconnect bit in SCB */
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or FLAGS,IDENTIFY_SEEN /* make note of IDENTIFY */
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jmp ITloop
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index_by_tag:
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mov SCBPTR,ARG_1
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mov A,SAVED_TCL
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cmp SCB_TCL,A jne abort_tag
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test SCB_CONTROL,TAG_ENB jz abort_tag
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call inb_last /* Ack Successful tag */
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jmp setup_SCB
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abort_tag:
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or SCSISIGO,ATNO /* turn on ATNO */
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mvi INTSTAT,ABORT_TAG /* let driver know */
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mvi 0xd call mk_mesg /* ABORT TAG message */
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mvi MSG_ABORT_TAG call mk_mesg /* ABORT TAG message */
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jmp mesgin_done
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/*
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@ -899,27 +919,59 @@ assert:
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mvi INTSTAT,NO_IDENT ret /* no - cause a kernel panic */
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/*
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* Locate the SCB matching the target ID/channel/lun in SAVED_TCL and switch
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* the SCB to it. Have the kernel print a warning message if it can't be
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* found, and generate an ABORT message to the target. SINDEX should be
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* Locate the SCB matching the target ID/channel/lun in SAVED_TCL, and the tag
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* value in ARG_1. If ARG_1 == SCB_LIST_NULL, we're looking for a non-tagged
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* SCB. Have the kernel print a warning message if it can't be found, and
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* generate an ABORT/ABORT_TAG message to the target. SINDEX should be
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* cleared on call.
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*/
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findSCB:
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mov A,SAVED_TCL
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mov SCBPTR,SINDEX /* switch to new SCB */
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mov SCBPTR,SINDEX /* switch to next SCB */
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mvi SEQCTL,0x50 /* PAUSEDIS|FASTMODE */
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cmp SCB_TCL,A jne findSCB1 /* target ID/channel/lun match? */
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test SCB_CONTROL,DISCONNECTED jz findSCB1 /*should be disconnected*/
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ret
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test SCB_CONTROL,TAG_ENB jnz findTaggedSCB
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cmp ARG_1,SCB_LIST_NULL je foundSCB
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jmp findSCB1
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findTaggedSCB:
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mov A, ARG_1 /* Tag passed in ARG_1 */
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cmp SCB_TAG,A jne findSCB1 /* Found it? */
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foundSCB:
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test FLAGS,PAGESCBS jz foundSCB_ret
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/* Remove this SCB from the disconnection list */
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cmp SCB_NEXT,SCB_LIST_NULL je unlink_prev
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mov SAVED_LINKPTR, SCB_PREV
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mov SCBPTR, SCB_NEXT
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mov SCB_PREV, SAVED_LINKPTR
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mov SCBPTR, SINDEX
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unlink_prev:
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cmp SCB_PREV,SCB_LIST_NULL je rHead/* At the head of the list */
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mov SAVED_LINKPTR, SCB_NEXT
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mov SCBPTR, SCB_PREV
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mov SCB_NEXT, SAVED_LINKPTR
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mov SCBPTR, SINDEX
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mvi SEQCTL,0x10 ret /* !PAUSEDIS|FASTMODE */
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rHead:
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mov DISCONNECTED_SCBH,SCB_NEXT
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foundSCB_ret:
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mvi SEQCTL,0x10 ret /* !PAUSEDIS|FASTMODE */
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findSCB1:
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mvi SEQCTL,0x10 /* !PAUSEDIS|FASTMODE */
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inc SINDEX
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mov A,SCBCOUNT
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cmp SINDEX,A jne findSCB
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mvi INTSTAT,NO_MATCH /* not found - signal kernel */
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mvi MSG_ABORT call mk_mesg /* ABORT message */
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or SCSISIGO,ATNO ret /* assert ATNO */
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cmp RETURN_1,SCB_PAGEDIN je return
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or SCSISIGO,ATNO /* assert ATNO */
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cmp ARG_1,SCB_LIST_NULL jne find_abort_tag
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mvi MSG_ABORT call mk_mesg
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jmp ITloop
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find_abort_tag:
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mvi MSG_ABORT_TAG call mk_mesg
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jmp ITloop
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/*
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* Make a working copy of the scatter-gather parameters from the SCB.
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@ -992,7 +1044,7 @@ ndx_dtr_2:
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*/
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mk_dtr:
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test SCB_CONTROL,NEEDWDTR jnz mk_wdtr_16bit
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or FLAGS, MAXOFFSET /* Force an offset of 15 or 8 if WIDE */
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mvi ARG_1, MAXOFFSET /* Force an offset of 15 or 8 if WIDE */
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mk_sdtr:
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mvi DINDIR,1 /* extended message */
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@ -1000,7 +1052,7 @@ mk_sdtr:
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mvi DINDIR,1 /* SDTR code */
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call sdtr_to_rate
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mov DINDIR,RETURN_1 /* REQ/ACK transfer period */
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test FLAGS, MAXOFFSET jnz mk_sdtr_max_offset
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cmp ARG_1, MAXOFFSET je mk_sdtr_max_offset
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and DINDIR,0x0f,SINDIR /* Sync Offset */
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mk_sdtr_done:
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@ -1010,8 +1062,6 @@ mk_sdtr_max_offset:
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/*
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* We're initiating sync negotiation, so request the max offset we can (15 or 8)
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*/
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xor FLAGS, MAXOFFSET
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/* Talking to a WIDE device? */
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test SCSIRATE, WIDEXFER jnz wmax_offset
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mvi DINDIR, MAX_OFFSET_8BIT
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|
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@ -13,12 +13,22 @@
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* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
|
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* 3. Absolutely no warranty of function or purpose is made by the author
|
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* Justin T. Gibbs.
|
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* 4. Modifications may be freely made to this file if the above conditions
|
||||
* are met.
|
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* 3. The name of the author may not be used to endorse or promote products
|
||||
* derived from this software without specific prior written permission.
|
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*
|
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* $Id: aic7xxx_reg.h,v 1.6 1996/03/10 07:02:32 gibbs Exp $
|
||||
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
||||
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
||||
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
||||
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
|
||||
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||||
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||||
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||||
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
||||
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
||||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $Id: aic7xxx_reg.h,v 1.7 1996/03/31 03:02:37 gibbs Exp $
|
||||
*/
|
||||
|
||||
/*
|
||||
|
|
@ -547,7 +557,9 @@
|
|||
#define SCB_CMDPTR2 0x0b6
|
||||
#define SCB_CMDPTR3 0x0b7
|
||||
#define SCB_CMDLEN 0x0b8
|
||||
#define SCB_NEXT_WAITING 0x0b9
|
||||
#define SCB_TAG 0x0b9
|
||||
#define SCB_NEXT 0x0ba
|
||||
#define SCB_PREV 0x0bb
|
||||
|
||||
#ifdef linux
|
||||
#define SG_SIZEOF 0x0c /* sizeof(struct scatterlist) */
|
||||
|
|
@ -629,9 +641,11 @@
|
|||
|
||||
/*
|
||||
* The sequencer will stick the frist byte of any rejected message here so
|
||||
* we can see what is getting thrown away.
|
||||
* we can see what is getting thrown away. Extended messages put the
|
||||
* extended message type in REJBYTE_EXT.
|
||||
*/
|
||||
#define REJBYTE 0x031
|
||||
#define REJBYTE 0x030
|
||||
#define REJBYTE_EXT 0x031
|
||||
|
||||
/*
|
||||
* Bit vector of targets that have disconnection disabled.
|
||||
|
|
@ -645,6 +659,7 @@
|
|||
*/
|
||||
#define MSG_LEN 0x034
|
||||
|
||||
/* We reserve 8bytes to store outgoing messages */
|
||||
#define MSG0 0x035
|
||||
#define COMP_MSG0 0xcb /* 2's complement of MSG0 */
|
||||
#define MSG1 0x036
|
||||
|
|
@ -652,64 +667,79 @@
|
|||
#define MSG3 0x038
|
||||
#define MSG4 0x039
|
||||
#define MSG5 0x03a
|
||||
#define MSG6 0x03b
|
||||
#define MSG7 0x03c
|
||||
|
||||
/*
|
||||
* These are offsets into the card's scratch ram. Some of the values are
|
||||
* specified in the AHA2742 technical reference manual and are initialized
|
||||
* by the BIOS at boot time.
|
||||
*/
|
||||
#define LASTPHASE 0x049
|
||||
#define ARG_1 0x04a
|
||||
#define RETURN_1 0x04a
|
||||
#define SEND_SENSE 0x80
|
||||
#define LASTPHASE 0x03d
|
||||
#define ARG_1 0x03e
|
||||
#define MAXOFFSET 0x01
|
||||
#define RETURN_1 0x03f
|
||||
#define SEND_WDTR 0x80
|
||||
#define SEND_SDTR 0x80
|
||||
#define SEND_REJ 0x40
|
||||
#define SEND_SDTR 0x60
|
||||
#define SEND_SENSE 0x40
|
||||
#define SEND_REJ 0x20
|
||||
#define SCB_PAGEDIN 0x10
|
||||
|
||||
#define SIGSTATE 0x04b
|
||||
#define SIGSTATE 0x040
|
||||
|
||||
#define DMAPARAMS 0x04c /* Parameters for DMA Logic */
|
||||
#define DMAPARAMS 0x041 /* Parameters for DMA Logic */
|
||||
|
||||
#define SG_COUNT 0x04d
|
||||
#define SG_NEXT 0x04e /* working value of SG pointer */
|
||||
#define SG_NEXT0 0x04e
|
||||
#define SG_NEXT1 0x04f
|
||||
#define SG_NEXT2 0x050
|
||||
#define SG_NEXT3 0x051
|
||||
#define SG_COUNT 0x042
|
||||
#define SG_NEXT 0x043 /* working value of SG pointer */
|
||||
#define SG_NEXT0 0x043
|
||||
#define SG_NEXT1 0x044
|
||||
#define SG_NEXT2 0x045
|
||||
#define SG_NEXT3 0x046
|
||||
|
||||
#define SCBCOUNT 0x052 /*
|
||||
#define SCBCOUNT 0x047 /*
|
||||
* Number of SCBs supported by
|
||||
* this card.
|
||||
*/
|
||||
#define FLAGS 0x053
|
||||
#define SINGLE_BUS 0x00
|
||||
#define TWIN_BUS 0x01
|
||||
#define WIDE_BUS 0x02
|
||||
#define DPHASE 0x04
|
||||
#define MAXOFFSET 0x08
|
||||
#define IDENTIFY_SEEN 0x40
|
||||
#define RESELECTED 0x80
|
||||
|
||||
#define ACTIVE_A 0x054
|
||||
#define ACTIVE_B 0x055
|
||||
#define SAVED_TCL 0x056 /*
|
||||
* Temporary storage for the
|
||||
* target/channel/lun of a
|
||||
* reconnecting target
|
||||
#define COMP_SCBCOUNT 0x048 /*
|
||||
* Two's compliment of SCBCOUNT
|
||||
*/
|
||||
#define WAITING_SCBH 0x057 /*
|
||||
* head of list of SCBs awaiting
|
||||
* selection
|
||||
*/
|
||||
#define QCNTMASK 0x058 /*
|
||||
#define QCNTMASK 0x049 /*
|
||||
* Mask of bits to test against
|
||||
* when looking at the Queue Count
|
||||
* registers. Works around a bug
|
||||
* on aic7850 chips.
|
||||
*/
|
||||
#define COMP_SCBCOUNT 0x059
|
||||
#define FLAGS 0x04a
|
||||
#define SINGLE_BUS 0x00
|
||||
#define TWIN_BUS 0x01
|
||||
#define WIDE_BUS 0x02
|
||||
#define PAGESCBS 0x04
|
||||
#define DPHASE 0x10
|
||||
#define SELECTED 0x20
|
||||
#define IDENTIFY_SEEN 0x40
|
||||
#define RESELECTED 0x80
|
||||
|
||||
#define SAVED_TCL 0x04b /*
|
||||
* Temporary storage for the
|
||||
* target/channel/lun of a
|
||||
* reconnecting target
|
||||
*/
|
||||
#define ACTIVE_A 0x04c
|
||||
#define ACTIVE_B 0x04d
|
||||
#define WAITING_SCBH 0x04e /*
|
||||
* head of list of SCBs awaiting
|
||||
* selection
|
||||
*/
|
||||
#define DISCONNECTED_SCBH 0x04f /*
|
||||
* head of list of SCBs that are
|
||||
* disconnected. Used for SCB
|
||||
* paging.
|
||||
*/
|
||||
#define SCB_LIST_NULL 0xff
|
||||
|
||||
#define SAVED_LINKPTR 0x050
|
||||
#define SAVED_SCBPTR 0x051
|
||||
|
||||
#define SCSICONF 0x05a
|
||||
#define HOSTCONF 0x05d
|
||||
|
||||
|
|
@ -730,6 +760,7 @@
|
|||
#define MSG_NOP 0x08
|
||||
#define MSG_MSG_PARITY_ERROR 0x09
|
||||
#define MSG_BUS_DEVICE_RESET 0x0c
|
||||
#define MSG_ABORT_TAG 0x0d
|
||||
#define MSG_SIMPLE_TAG 0x20
|
||||
#define MSG_IDENTIFY 0x80
|
||||
|
||||
|
|
|
|||
Loading…
Reference in a new issue