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

     /*      $NetBSD: dptvar.h,v 1.12 2005/02/27 00:27:01 perry Exp $        */
     
     /*
      * Copyright (c) 1999, 2000, 2001 Andrew Doran <ad@NetBSD.org>
      * 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.
     *
     * 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.
     *
     */
    
    #ifndef _IC_DPTVAR_H_
    #define _IC_DPTVAR_H_ 1
    
    /* Software parameters */
    #define DPT_SG_SIZE             17
    #define DPT_MAX_XFER            65536
    #define DPT_MAX_CCBS            256
    #define DPT_ABORT_TIMEOUT       2000    /* milliseconds */
    #define DPT_SCRATCH_SIZE        256     /* bytes */
    
    #define CCB_OFF(sc,m)   ((u_long)(m) - (u_long)((sc)->sc_ccbs))
    
    #define CCB_ABORT       0x01    /* abort has been issued on this CCB */
    #define CCB_INTR        0x02    /* HBA interrupted for this CCB */
    #define CCB_PRIVATE     0x04    /* ours; don't talk to scsipi when done */
    #define CCB_WAIT        0x08    /* sleeping on completion */
    
    struct dpt_ccb {
            /* Data that will be touched by the HBA */
            struct eata_cp  ccb_eata_cp;            /* EATA command packet */
            struct eata_sg  ccb_sg[DPT_SG_SIZE];    /* SG element list */
            struct scsi_sense_data ccb_sense;       /* SCSI sense data on error */
    
            /* Data that will not be touched by the HBA */
            volatile int    ccb_flg;                /* CCB flags */
            int             ccb_timeout;            /* timeout in ms */
            u_int32_t       ccb_ccbpa;              /* physical addr of this CCB */
            bus_dmamap_t    ccb_dmamap_xfer;        /* dmamap for data xfers */
            int             ccb_hba_status;         /* from status packet */
            int             ccb_scsi_status;        /* from status packet */
            int             ccb_id;                 /* unique ID of this CCB */
            SLIST_ENTRY(dpt_ccb) ccb_chain;         /* link to next CCB */
            struct scsipi_xfer *ccb_xs;             /* initiating SCSI command */
            struct eata_sp  *ccb_savesp;            /* saved status packet */
    };
    
    struct dpt_softc {
            struct device   sc_dv;          /* generic device data */
            struct scsipi_adapter sc_adapt; /* scsipi adapter */
            struct scsipi_channel sc_chans[3]; /* each channel */
            bus_space_handle_t sc_ioh;      /* bus space handle */
            bus_space_tag_t sc_iot;         /* bus space tag */
            bus_dma_tag_t   sc_dmat;        /* bus DMA tag */
            bus_dmamap_t    sc_dmamap;      /* maps the CCBs */
            void            *sc_ih;         /* interrupt handler cookie */
            struct dpt_ccb  *sc_ccbs;       /* all our CCBs */
            struct eata_sp  *sc_stp;        /* EATA status packet */
            int             sc_stpoff;      /* status packet offset in dmamap */
            u_int32_t       sc_stppa;       /* status packet physical address */
            caddr_t         sc_scr;         /* scratch area */
            int             sc_scroff;      /* scratch area offset in dmamap */
            u_int32_t       sc_scrpa;       /* scratch area physical address */
            int             sc_hbaid[3];    /* ID of HBA on each channel */
            int             sc_nccbs;       /* number of CCBs available */
            SLIST_HEAD(, dpt_ccb) sc_ccb_free;/* free ccb list */
            struct eata_cfg sc_ec;          /* EATA configuration data */
            int             sc_uactive;     /* user command active */
            int             sc_bustype;     /* SysInfo bus type */
            int             sc_isadrq;      /* ISA DRQ */
            int             sc_isairq;      /* ISA IRQ */
            int             sc_isaport;     /* ISA port */
    };
    
    void    dpt_init(struct dpt_softc *, const char *);
    int     dpt_intr(void *);
    int     dpt_readcfg(struct dpt_softc *);
    
    #endif  /* !defined _IC_DPTVAR_H_ */

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