sys/dev/ic/dptvar.h

   1 /*      $NetBSD: dptvar.h,v 1.13 2005/12/11 12:21:26 christos Exp $     */
   2
   3 /*
   4  * Copyright (c) 1999, 2000, 2001 Andrew Doran <ad@NetBSD.org>
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  26  * SUCH DAMAGE.
  27  *
  28  */
  29
  30 #ifndef _IC_DPTVAR_H_
  31 #define _IC_DPTVAR_H_ 1
  32
  33 /* Software parameters */
  34 #define DPT_SG_SIZE             17
  35 #define DPT_MAX_XFER            65536
  36 #define DPT_MAX_CCBS            256
  37 #define DPT_ABORT_TIMEOUT       2000    /* milliseconds */
  38 #define DPT_SCRATCH_SIZE        256     /* bytes */
  39
  40 #define CCB_OFF(sc,m)   ((u_long)(m) - (u_long)((sc)->sc_ccbs))
  41
  42 #define CCB_ABORT       0x01    /* abort has been issued on this CCB */
  43 #define CCB_INTR        0x02    /* HBA interrupted for this CCB */
  44 #define CCB_PRIVATE     0x04    /* ours; don't talk to scsipi when done */
  45 #define CCB_WAIT        0x08    /* sleeping on completion */
  46
  47 struct dpt_ccb {
  48         /* Data that will be touched by the HBA */
  49         struct eata_cp  ccb_eata_cp;            /* EATA command packet */
  50         struct eata_sg  ccb_sg[DPT_SG_SIZE];    /* SG element list */
  51         struct scsi_sense_data ccb_sense;       /* SCSI sense data on error */
  52
  53         /* Data that will not be touched by the HBA */
  54         volatile int    ccb_flg;                /* CCB flags */
  55         int             ccb_timeout;            /* timeout in ms */
  56         u_int32_t       ccb_ccbpa;              /* physical addr of this CCB */
  57         bus_dmamap_t    ccb_dmamap_xfer;        /* dmamap for data xfers */
  58         int             ccb_hba_status;         /* from status packet */
  59         int             ccb_scsi_status;        /* from status packet */
  60         int             ccb_id;                 /* unique ID of this CCB */
  61         SLIST_ENTRY(dpt_ccb) ccb_chain;         /* link to next CCB */
  62         struct scsipi_xfer *ccb_xs;             /* initiating SCSI command */
  63         struct eata_sp  *ccb_savesp;            /* saved status packet */
  64 };
  65
  66 struct dpt_softc {
  67         struct device   sc_dv;          /* generic device data */
  68         struct scsipi_adapter sc_adapt; /* scsipi adapter */
  69         struct scsipi_channel sc_chans[3]; /* each channel */
  70         bus_space_handle_t sc_ioh;      /* bus space handle */
  71         bus_space_tag_t sc_iot;         /* bus space tag */
  72         bus_dma_tag_t   sc_dmat;        /* bus DMA tag */
  73         bus_dmamap_t    sc_dmamap;      /* maps the CCBs */
  74         void            *sc_ih;         /* interrupt handler cookie */
  75         struct dpt_ccb  *sc_ccbs;       /* all our CCBs */
  76         struct eata_sp  *sc_stp;        /* EATA status packet */
  77         int             sc_stpoff;      /* status packet offset in dmamap */
  78         u_int32_t       sc_stppa;       /* status packet physical address */
  79         void *          sc_scr;         /* scratch area */
  80         int             sc_scroff;      /* scratch area offset in dmamap */
  81         u_int32_t       sc_scrpa;       /* scratch area physical address */
  82         int             sc_hbaid[3];    /* ID of HBA on each channel */
  83         int             sc_nccbs;       /* number of CCBs available */
  84         SLIST_HEAD(, dpt_ccb) sc_ccb_free;/* free ccb list */
  85         struct eata_cfg sc_ec;          /* EATA configuration data */
  86         int             sc_uactive;     /* user command active */
  87         int             sc_bustype;     /* SysInfo bus type */
  88         int             sc_isadrq;      /* ISA DRQ */
  89         int             sc_isairq;      /* ISA IRQ */
  90         int             sc_isaport;     /* ISA port */
  91 };
  92
  93 void    dpt_init(struct dpt_softc *, const char *);
  94 int     dpt_intr(void *);
  95 int     dpt_readcfg(struct dpt_softc *);
  96
  97 #endif  /* !defined _IC_DPTVAR_H_ */