213 lines
7.8 KiB
C
213 lines
7.8 KiB
C
/* $NetBSD: aic6360var.h,v 1.7 2000/03/20 22:53:36 enami Exp $ */
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/*
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* Copyright (c) 1994, 1995, 1996 Charles M. Hannum. 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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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Charles M. Hannum.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* Copyright (c) 1994 Jarle Greipsland
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* 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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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* 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. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* Acknowledgements: Many of the algorithms used in this driver are
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* inspired by the work of Julian Elischer (julian@tfs.com) and
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* Charles Hannum (mycroft@duality.gnu.ai.mit.edu). Thanks a million!
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*/
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typedef u_long physaddr;
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typedef u_long physlen;
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struct aic_dma_seg {
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physaddr seg_addr;
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physlen seg_len;
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};
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#define AIC_NSEG 16
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/*
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* ACB. Holds additional information for each SCSI command Comments: We
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* need a separate scsi command block because we may need to overwrite it
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* with a request sense command. Basicly, we refrain from fiddling with
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* the scsipi_xfer struct (except do the expected updating of return values).
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* We'll generally update: xs->{flags,resid,error,sense,status} and
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* occasionally xs->retries.
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*/
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struct aic_acb {
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struct scsi_generic scsipi_cmd;
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int scsipi_cmd_length;
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u_char *data_addr; /* Saved data pointer */
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int data_length; /* Residue */
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u_char target_stat; /* SCSI status byte */
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#ifdef notdef
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struct aic_dma_seg dma[AIC_NSEG]; /* Physical addresses+len */
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#endif
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TAILQ_ENTRY(aic_acb) chain;
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struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */
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int flags;
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#define ACB_ALLOC 0x01
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#define ACB_NEXUS 0x02
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#define ACB_SENSE 0x04
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#define ACB_ABORT 0x40
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#define ACB_RESET 0x80
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int timeout;
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};
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/*
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* Some info about each (possible) target on the SCSI bus. This should
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* probably have been a "per target+lunit" structure, but we'll leave it at
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* this for now.
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*/
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struct aic_tinfo {
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int cmds; /* #commands processed */
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int dconns; /* #disconnects */
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int touts; /* #timeouts */
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int perrs; /* #parity errors */
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int senses; /* #request sense commands sent */
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ushort lubusy; /* What local units/subr. are busy? */
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u_char flags;
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#define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */
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#define DO_WIDE 0x02 /* (Re)Negotiate wide options */
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u_char period; /* Period suggestion */
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u_char offset; /* Offset suggestion */
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u_char width; /* Width suggestion */
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};
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struct aic_softc {
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struct device sc_dev;
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bus_space_tag_t sc_iot;
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bus_space_handle_t sc_ioh;
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struct scsipi_link sc_link; /* prototype for subdevs */
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struct scsipi_adapter sc_adapter;
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TAILQ_HEAD(, aic_acb) free_list, ready_list, nexus_list;
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struct aic_acb *sc_nexus; /* current command */
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struct aic_acb sc_acb[8];
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struct aic_tinfo sc_tinfo[8];
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/* Data about the current nexus (updated for every cmd switch) */
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u_char *sc_dp; /* Current data pointer */
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size_t sc_dleft; /* Data bytes left to transfer */
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u_char *sc_cp; /* Current command pointer */
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size_t sc_cleft; /* Command bytes left to transfer */
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/* Adapter state */
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u_char sc_phase; /* Current bus phase */
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u_char sc_prevphase; /* Previous bus phase */
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u_char sc_state; /* State applicable to the adapter */
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#define AIC_INIT 0
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#define AIC_IDLE 1
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#define AIC_SELECTING 2 /* SCSI command is arbiting */
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#define AIC_RESELECTED 3 /* Has been reselected */
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#define AIC_CONNECTED 4 /* Actively using the SCSI bus */
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#define AIC_DISCONNECT 5 /* MSG_DISCONNECT received */
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#define AIC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */
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#define AIC_CLEANING 7
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u_char sc_flags;
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#define AIC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */
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#define AIC_ABORTING 0x02 /* Bailing out */
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#define AIC_DOINGDMA 0x04 /* The FIFO data path is active! */
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u_char sc_selid; /* Reselection ID */
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struct device *sc_child;/* Our child */
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/* Message stuff */
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u_char sc_msgpriq; /* Messages we want to send */
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u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */
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u_char sc_lastmsg; /* Message last transmitted */
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u_char sc_currmsg; /* Message currently ready to transmit */
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#define SEND_DEV_RESET 0x01
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#define SEND_PARITY_ERROR 0x02
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#define SEND_INIT_DET_ERR 0x04
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#define SEND_REJECT 0x08
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#define SEND_IDENTIFY 0x10
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#define SEND_ABORT 0x20
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#define SEND_SDTR 0x40
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#define SEND_WDTR 0x80
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#define AIC_MAX_MSG_LEN 8
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u_char sc_omess[AIC_MAX_MSG_LEN];
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u_char *sc_omp; /* Outgoing message pointer */
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u_char sc_imess[AIC_MAX_MSG_LEN];
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u_char *sc_imp; /* Incoming message pointer */
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/* Hardware stuff */
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int sc_initiator; /* Our scsi id */
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int sc_freq; /* Clock frequency in MHz */
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int sc_minsync; /* Minimum sync period / 4 */
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int sc_maxsync; /* Maximum sync period / 4 */
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};
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#if AIC_DEBUG
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#define AIC_SHOWACBS 0x01
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#define AIC_SHOWINTS 0x02
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#define AIC_SHOWCMDS 0x04
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#define AIC_SHOWMISC 0x08
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#define AIC_SHOWTRACE 0x10
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#define AIC_SHOWSTART 0x20
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#define AIC_DOBREAK 0x40
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extern int aic_debug; /* AIC_SHOWSTART|AIC_SHOWMISC|AIC_SHOWTRACE; */
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#define AIC_PRINT(b, s) do {if ((aic_debug & (b)) != 0) printf s;} while (0)
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#define AIC_BREAK() do {if ((aic_debug & AIC_DOBREAK) != 0) Debugger();} while (0)
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#define AIC_ASSERT(x) do {if (x) {} else {printf("%s at line %d: assertion failed\n", sc->sc_dev.dv_xname, __LINE__); Debugger();}} while (0)
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#else
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#define AIC_PRINT(b, s)
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#define AIC_BREAK()
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#define AIC_ASSERT(x)
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#endif
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#define AIC_ACBS(s) AIC_PRINT(AIC_SHOWACBS, s)
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#define AIC_INTS(s) AIC_PRINT(AIC_SHOWINTS, s)
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#define AIC_CMDS(s) AIC_PRINT(AIC_SHOWCMDS, s)
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#define AIC_MISC(s) AIC_PRINT(AIC_SHOWMISC, s)
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#define AIC_TRACE(s) AIC_PRINT(AIC_SHOWTRACE, s)
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#define AIC_START(s) AIC_PRINT(AIC_SHOWSTART, s)
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#define AIC_ISA_IOSIZE 0x20 /* XXX */
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void aicattach __P((struct aic_softc *));
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int aic_activate __P((struct device *, enum devact));
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int aic_detach __P((struct device *, int));
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int aicintr __P((void *));
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int aic_find __P((bus_space_tag_t, bus_space_handle_t));
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void aic_isa_attach __P((struct device *, struct device *, void *));
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void aic_init __P((struct aic_softc *, int));
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