FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/aic6360var.h

     /*      $NetBSD: aic6360var.h,v 1.12 2005/12/11 12:21:25 christos Exp $ */
     
     /*
      * Copyright (c) 1994, 1995, 1996 Charles M. Hannum.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
      * are met:
      * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *      This product includes software developed by Charles M. Hannum.
     * 4. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * Copyright (c) 1994 Jarle Greipsland
     * All rights reserved.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. The name of the author may not be used to endorse or promote products
     *    derived from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 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.
     */
    
    #ifndef _DEV_IC_AIC6360VAR_H_
    #define _DEV_IC_AIC6360VAR_H_
    
    /*
     * Acknowledgements: Many of the algorithms used in this driver are
     * inspired by the work of Julian Elischer (julian@tfs.com) and
     * Charles Hannum (mycroft@duality.gnu.ai.mit.edu).  Thanks a million!
     */
    
    typedef u_long physaddr;
    typedef u_long physlen;
    
    struct aic_dma_seg {
            physaddr seg_addr;
            physlen seg_len;
    };
    
    #define AIC_NSEG        16
    
    /*
     * ACB. Holds additional information for each SCSI command Comments: We
     * need a separate scsi command block because we may need to overwrite it
     * with a request sense command.  Basicly, we refrain from fiddling with
     * the scsipi_xfer struct (except do the expected updating of return values).
     * We'll generally update: xs->{flags,resid,error,sense,status} and
     * occasionally xs->retries.
     */
    struct aic_acb {
            struct scsipi_generic scsipi_cmd;
            int scsipi_cmd_length;
            u_char *data_addr;              /* Saved data pointer */
            int data_length;                /* Residue */
    
            u_char target_stat;             /* SCSI status byte */
    
    #ifdef notdef
            struct aic_dma_seg dma[AIC_NSEG]; /* Physical addresses+len */
    #endif
    
            TAILQ_ENTRY(aic_acb) chain;
            struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */
            int flags;
    #define ACB_ALLOC       0x01
    #define ACB_NEXUS       0x02
    #define ACB_SENSE       0x04
    #define ACB_ABORT       0x40
    #define ACB_RESET       0x80
            int timeout;
    };
    
    /*
     * Some info about each (possible) target on the SCSI bus.  This should
     * probably have been a "per target+lunit" structure, but we'll leave it at
    * this for now.
    */
   struct aic_tinfo {
           int     cmds;           /* #commands processed */
           int     dconns;         /* #disconnects */
           int     touts;          /* #timeouts */
           int     perrs;          /* #parity errors */
           int     senses;         /* #request sense commands sent */
           ushort  lubusy;         /* What local units/subr. are busy? */
           u_char  flags;
   #define DO_SYNC         0x01    /* (Re)Negotiate synchronous options */
   #define DO_WIDE         0x02    /* (Re)Negotiate wide options */
           u_char  period;         /* Period suggestion */
           u_char  offset;         /* Offset suggestion */
           u_char  width;          /* Width suggestion */
   };
   
   struct aic_softc {
           struct device sc_dev;
   
           bus_space_tag_t sc_iot;
           bus_space_handle_t sc_ioh;
   
           struct scsipi_adapter sc_adapter;
           struct scsipi_channel sc_channel;
   
           TAILQ_HEAD(, aic_acb) free_list, ready_list, nexus_list;
           struct aic_acb *sc_nexus;       /* current command */
           struct aic_acb sc_acb[8];
           struct aic_tinfo sc_tinfo[8];
   
           /* Data about the current nexus (updated for every cmd switch) */
           u_char  *sc_dp;         /* Current data pointer */
           size_t  sc_dleft;       /* Data bytes left to transfer */
           u_char  *sc_cp;         /* Current command pointer */
           size_t  sc_cleft;       /* Command bytes left to transfer */
   
           /* Adapter state */
           u_char   sc_phase;      /* Current bus phase */
           u_char   sc_prevphase;  /* Previous bus phase */
           u_char   sc_state;      /* State applicable to the adapter */
   #define AIC_INIT        0
   #define AIC_IDLE        1
   #define AIC_SELECTING   2       /* SCSI command is arbiting  */
   #define AIC_RESELECTED  3       /* Has been reselected */
   #define AIC_CONNECTED   4       /* Actively using the SCSI bus */
   #define AIC_DISCONNECT  5       /* MSG_DISCONNECT received */
   #define AIC_CMDCOMPLETE 6       /* MSG_CMDCOMPLETE received */
   #define AIC_CLEANING    7
           u_char   sc_flags;
   #define AIC_DROP_MSGIN  0x01    /* Discard all msgs (parity err detected) */
   #define AIC_ABORTING    0x02    /* Bailing out */
   #define AIC_DOINGDMA    0x04    /* The FIFO data path is active! */
           u_char  sc_selid;       /* Reselection ID */
           struct device *sc_child;/* Our child */
   
           /* Message stuff */
           u_char  sc_msgpriq;     /* Messages we want to send */
           u_char  sc_msgoutq;     /* Messages sent during last MESSAGE OUT */
           u_char  sc_lastmsg;     /* Message last transmitted */
           u_char  sc_currmsg;     /* Message currently ready to transmit */
   #define SEND_DEV_RESET          0x01
   #define SEND_PARITY_ERROR       0x02
   #define SEND_INIT_DET_ERR       0x04
   #define SEND_REJECT             0x08
   #define SEND_IDENTIFY           0x10
   #define SEND_ABORT              0x20
   #define SEND_SDTR               0x40
   #define SEND_WDTR               0x80
   #define AIC_MAX_MSG_LEN 8
           u_char  sc_omess[AIC_MAX_MSG_LEN];
           u_char  *sc_omp;                /* Outgoing message pointer */
           u_char  sc_imess[AIC_MAX_MSG_LEN];
           u_char  *sc_imp;                /* Incoming message pointer */
   
           /* Hardware stuff */
           int     sc_initiator;           /* Our scsi id */
           int     sc_freq;                /* Clock frequency in MHz */
           int     sc_minsync;             /* Minimum sync period / 4 */
           int     sc_maxsync;             /* Maximum sync period / 4 */
   };
   
   #if AIC_DEBUG
   #define AIC_SHOWACBS    0x01
   #define AIC_SHOWINTS    0x02
   #define AIC_SHOWCMDS    0x04
   #define AIC_SHOWMISC    0x08
   #define AIC_SHOWTRACE   0x10
   #define AIC_SHOWSTART   0x20
   #define AIC_DOBREAK     0x40
   extern int aic_debug; /* AIC_SHOWSTART|AIC_SHOWMISC|AIC_SHOWTRACE; */
   #define AIC_PRINT(b, s) do { \
                                   if ((aic_debug & (b)) != 0) \
                                           printf s; \
                           } while (/* CONSTCOND */ 0)
   #define AIC_BREAK()     do { \
                                   if ((aic_debug & AIC_DOBREAK) != 0) \
                                           Debugger(); \
                           } while (/* CONSTCOND */ 0)
   #define AIC_ASSERT(x)   do { \
                           if (! (x)) { \
                                   printf("%s at line %d: assertion failed\n", \
                                       sc->sc_dev.dv_xname, __LINE__); \
                                   Debugger(); \
                           } } while (/* CONSTCOND */ 0)
   #else
   #define AIC_PRINT(b, s) /* NOTHING */
   #define AIC_BREAK()     /* NOTHING */
   #define AIC_ASSERT(x)   /* NOTHING */
   #endif
   
   #define AIC_ACBS(s)     AIC_PRINT(AIC_SHOWACBS, s)
   #define AIC_INTS(s)     AIC_PRINT(AIC_SHOWINTS, s)
   #define AIC_CMDS(s)     AIC_PRINT(AIC_SHOWCMDS, s)
   #define AIC_MISC(s)     AIC_PRINT(AIC_SHOWMISC, s)
   #define AIC_TRACE(s)    AIC_PRINT(AIC_SHOWTRACE, s)
   #define AIC_START(s)    AIC_PRINT(AIC_SHOWSTART, s)
   
   #define AIC_ISA_IOSIZE  0x20    /* XXX */
   
   void    aicattach(struct aic_softc *);
   int     aic_activate(struct device *, enum devact);
   int     aic_detach(struct device *, int);
   int     aicintr(void *);
   int     aic_find(bus_space_tag_t, bus_space_handle_t);
   void    aic_isa_attach(struct device *, struct device *, void *);
   void    aic_init(struct aic_softc *, int);
   
   #endif /* _DEV_IC_AIC6360VAR_H_ */

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