FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/mb89352var.h

     /*      $NetBSD: mb89352var.h,v 1.12 2008/05/04 13:00:51 martin Exp $   */
     /*      NecBSD: mb89352var.h,v 1.4 1998/03/14 07:31:22 kmatsuda Exp     */
     
     /*-
      * Copyright (c) 1996-1999 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Charles M. Hannum, Masaru Oki and Kouichi Matsuda.
     *
     * 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.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
     *
     * 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.
     */
    /*
     * [NetBSD for NEC PC-98 series]
     *  Copyright (c) 1996, 1997, 1998
     *      NetBSD/pc98 porting staff. All rights reserved.
     *  Copyright (c) 1996, 1997, 1998
     *      Kouich Matsuda. All rights reserved.
     */
    
    #ifndef _MB89352VAR_H_
    #define _MB89352VAR_H_
    /*
     * 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 scsi_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 spc_acb {
            struct scsipi_generic scsipi_cmd;
            int scsipi_cmd_length;
            uint8_t *data_addr;             /* Saved data pointer */
            int data_length;                /* Residue */
    
            uint8_t target_stat;            /* SCSI status byte */
    
    #ifdef notdef
            struct spc_dma_seg dma[SPC_NSEG]; /* Physical addresses+len */
    #endif
    
            TAILQ_ENTRY(spc_acb) chain;
            struct scsipi_xfer *xs; /* SCSI xfer ctrl block from above */
            u_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 spc_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 */
           uint8_t period;         /* Period suggestion */
           uint8_t offset;         /* Offset suggestion */
           uint8_t width;          /* Width suggestion */
   };
   
   struct spc_softc {
           device_t sc_dev;
   
           bus_space_tag_t sc_iot;
           bus_space_handle_t sc_ioh;
   
           struct scsipi_channel sc_channel; /* prototype for subdevs */
           struct scsipi_adapter sc_adapter;
   
           TAILQ_HEAD(, spc_acb) free_list, ready_list, nexus_list;
           struct spc_acb *sc_nexus;       /* current command */
           struct spc_acb sc_acb[8];
           struct spc_tinfo sc_tinfo[8];
   
           /* Data about the current nexus (updated for every cmd switch) */
           uint8_t *sc_dp;         /* Current data pointer */
           size_t  sc_dleft;       /* Data bytes left to transfer */
           uint8_t *sc_cp;         /* Current command pointer */
           size_t  sc_cleft;       /* Command bytes left to transfer */
   
           /* Adapter state */
           uint8_t  sc_phase;      /* Current bus phase */
           uint8_t  sc_prevphase;  /* Previous bus phase */
           uint8_t  sc_state;      /* State applicable to the adapter */
   #define SPC_INIT        0
   #define SPC_IDLE        1
   #define SPC_SELECTING   2       /* SCSI command is arbiting  */
   #define SPC_RESELECTED  3       /* Has been reselected */
   #define SPC_CONNECTED   4       /* Actively using the SCSI bus */
   #define SPC_DISCONNECT  5       /* MSG_DISCONNECT received */
   #define SPC_CMDCOMPLETE 6       /* MSG_CMDCOMPLETE received */
   #define SPC_CLEANING    7
           uint8_t  sc_flags;
   #define SPC_DROP_MSGIN  0x01    /* Discard all msgs (parity err detected) */
   #define SPC_ABORTING    0x02    /* Bailing out */
   #define SPC_DOINGDMA    0x04    /* doing DMA */
   #define SPC_INACTIVE    0x80    /* The FIFO data path is active! */
           uint8_t sc_selid;       /* Reselection ID */
           struct device *sc_child;/* Our child */
   
           /* Message stuff */
           uint8_t sc_msgpriq;     /* Messages we want to send */
           uint8_t sc_msgoutq;     /* Messages sent during last MESSAGE OUT */
           uint8_t sc_lastmsg;     /* Message last transmitted */
           uint8_t 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 SPC_MAX_MSG_LEN 8
           uint8_t sc_omess[SPC_MAX_MSG_LEN];
           uint8_t *sc_omp;                /* Outgoing message pointer */
           uint8_t sc_imess[SPC_MAX_MSG_LEN];
           uint8_t *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 */
   
           /* DMA function set from MD code */
           void (*sc_dma_start)(struct spc_softc *, void *, size_t, int);
           void (*sc_dma_done)(struct spc_softc *);
   };
   
   #if SPC_DEBUG
   #define SPC_SHOWACBS    0x01
   #define SPC_SHOWINTS    0x02
   #define SPC_SHOWCMDS    0x04
   #define SPC_SHOWMISC    0x08
   #define SPC_SHOWTRACE   0x10
   #define SPC_SHOWSTART   0x20
   #define SPC_DOBREAK     0x40
   extern int spc_debug; /* SPC_SHOWSTART|SPC_SHOWMISC|SPC_SHOWTRACE; */
   #define SPC_PRINT(b, s)                                                 \
           do {                                                            \
                   if ((spc_debug & (b)) != 0)                             \
                           printf s;                                       \
           } while (/* CONSTCOND */ 0)
   #define SPC_BREAK()                                                     \
           do {                                                            \
                   if ((spc_debug & SPC_DOBREAK) != 0)                     \
                           Debugger();                                     \
           } while (/* CONSTCOND */ 0)
   #define SPC_ASSERT(x)                                                   \
           do {                                                            \
                   if (x) {                                                \
                           ;                                               \
                   } else {                                                \
                           printf("%s at line %d: assertion failed\n",     \
                               device_xname(sc->sc_dev), __LINE__);        \
                           Debugger();                                     \
                   }                                                       \
           } while (/* CONSTCOND */ 0)
   #else
   #define SPC_PRINT(b, s)
   #define SPC_BREAK()
   #define SPC_ASSERT(x)
   #endif
   
   #define SPC_ACBS(s)     SPC_PRINT(SPC_SHOWACBS, s)
   #define SPC_INTS(s)     SPC_PRINT(SPC_SHOWINTS, s)
   #define SPC_CMDS(s)     SPC_PRINT(SPC_SHOWCMDS, s)
   #define SPC_MISC(s)     SPC_PRINT(SPC_SHOWMISC, s)
   #define SPC_TRACE(s)    SPC_PRINT(SPC_SHOWTRACE, s)
   #define SPC_START(s)    SPC_PRINT(SPC_SHOWSTART, s)
   
   void    spc_attach(struct spc_softc *);
   int     spc_activate(device_t, enum devact);
   int     spc_detach(device_t, int);
   int     spc_intr(void *);
   int     spc_find(bus_space_tag_t, bus_space_handle_t, int);
   void    spc_init(struct spc_softc *, int);
   void    spc_sched(struct spc_softc *);
   #endif  /* _MB89352VAR_H_ */

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