The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)


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

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    1 /* $NetBSD: oosiopvar.h,v 1.4 2005/12/11 12:21:28 christos Exp $ */
    2 
    3 /*
    4  * Copyright (c) 2001 Shuichiro URATA.  All rights reserved.
    5  *
    6  * Redistribution and use in source and binary forms, with or without
    7  * modification, are permitted provided that the following conditions
    8  * are met:
    9  * 1. Redistributions of source code must retain the above copyright
   10  *    notice, this list of conditions and the following disclaimer.
   11  * 2. Redistributions in binary form must reproduce the above copyright
   12  *    notice, this list of conditions and the following disclaimer in the
   13  *    documentation and/or other materials provided with the distribution.
   14  * 3. The name of the author may not be used to endorse or promote products
   15  *    derived from this software without specific prior written permission.
   16  *
   17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   27  */
   28 
   29 #define OOSIOP_NTGT     8               /* Max targets */
   30 #define OOSIOP_NCB      32              /* Initial command buffers */
   31 #define OOSIOP_NSG      (MIN(btoc(MAXPHYS) + 1, 32)) /* Max S/G operation */
   32 #define OOSIOP_MAX_XFER ctob(OOSIOP_NSG - 1)
   33 
   34 struct oosiop_xfer {
   35         /* script for scatter/gather DMA (move*nsg+jump) */
   36         uint32_t datain_scr[(OOSIOP_NSG + 1) * 2];
   37         uint32_t dataout_scr[(OOSIOP_NSG + 1) * 2];
   38 
   39         uint8_t msgin[8];
   40         uint8_t msgout[8];
   41         uint8_t status;
   42         uint8_t pad[7];
   43 } __attribute__((__packed__));
   44 
   45 #define SCSI_OOSIOP_NOSTATUS    0xff    /* device didn't report status */
   46 
   47 #define OOSIOP_XFEROFF(x)       offsetof(struct oosiop_xfer, x)
   48 #define OOSIOP_DINSCROFF        OOSIOP_XFEROFF(datain_scr[0])
   49 #define OOSIOP_DOUTSCROFF       OOSIOP_XFEROFF(dataout_scr[0])
   50 #define OOSIOP_MSGINOFF         OOSIOP_XFEROFF(msgin[0])
   51 #define OOSIOP_MSGOUTOFF        OOSIOP_XFEROFF(msgout[0])
   52 
   53 #define OOSIOP_XFERSCR_SYNC(sc, cb, ops)                                \
   54         bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
   55             OOSIOP_MSGINOFF - OOSIOP_DINSCROFF, (ops))
   56 #define OOSIOP_DINSCR_SYNC(sc, cb, ops)                                 \
   57         bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
   58             OOSIOP_DOUTSCROFF - OOSIOP_DINSCROFF, (ops))
   59 #define OOSIOP_DOUTSCR_SYNC(sc, cb, ops)                                \
   60         bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DOUTSCROFF,\
   61             OOSIOP_MSGINOFF - OOSIOP_DOUTSCROFF, (ops))
   62 #define OOSIOP_XFERMSG_SYNC(sc, cb, ops)                                \
   63         bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_MSGINOFF,  \
   64             sizeof(struct oosiop_xfer) - OOSIOP_MSGINOFF, (ops))
   65 
   66 #define OOSIOP_SCRIPT_SYNC(sc, ops)                                     \
   67         bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_scrdma,                 \
   68             0, sizeof(oosiop_script), (ops))
   69 
   70 struct oosiop_cb {
   71         TAILQ_ENTRY(oosiop_cb) chain;
   72 
   73         struct scsipi_xfer *xs;         /* SCSI xfer ctrl block from above */
   74         int flags;
   75         int id;                         /* target scsi id */
   76         int lun;                        /* target lun */
   77 
   78         bus_dmamap_t cmddma;            /* DMA map for command out */
   79         bus_dmamap_t datadma;           /* DMA map for data I/O */
   80         bus_dmamap_t xferdma;           /* DMA map for xfer block */
   81 
   82         int curdp;                      /* current data pointer */
   83         int savedp;                     /* saved data pointer */
   84         int msgoutlen;
   85 
   86         struct oosiop_xfer *xfer;       /* DMA xfer block */
   87 };
   88 
   89 /* oosiop_cb flags */
   90 #define CBF_SELTOUT     0x01    /* Selection timeout */
   91 #define CBF_TIMEOUT     0x02    /* Command timeout */
   92 
   93 TAILQ_HEAD(oosiop_cb_queue, oosiop_cb);
   94 
   95 struct oosiop_target {
   96         struct oosiop_cb *nexus;
   97         int flags;
   98         uint8_t scf;            /* synchronous clock divisor */
   99         uint8_t sxfer;          /* synchronous period and offset */
  100 };
  101 
  102 /* target flags */
  103 #define TGTF_SYNCNEG    0x01    /* Trigger synchronous negotiation */
  104 #define TGTF_WAITSDTR   0x02    /* Waiting SDTR from target */
  105 
  106 struct oosiop_softc {
  107         struct device sc_dev;
  108 
  109         bus_space_tag_t sc_bst;         /* bus space tag */
  110         bus_space_handle_t sc_bsh;      /* bus space handle */
  111 
  112         bus_dma_tag_t sc_dmat;          /* bus DMA tag */
  113         bus_dmamap_t sc_scrdma;         /* script DMA map */
  114 
  115         bus_addr_t sc_scrbase;          /* script DMA base address */
  116         uint32_t *sc_scr;               /* ptr to script memory */
  117 
  118         int sc_chip;                    /* 700 or 700-66 */
  119 #define OOSIOP_700      0
  120 #define OOSIOP_700_66   1
  121 
  122         int             sc_id;          /* SCSI ID of this interface */
  123         int             sc_freq;        /* SCLK frequency */
  124         int             sc_ccf;         /* asynchronous divisor (*10) */
  125         uint8_t         sc_dcntl;
  126         uint8_t         sc_minperiod;
  127 
  128         struct oosiop_target sc_tgt[OOSIOP_NTGT];
  129 
  130         struct scsipi_adapter sc_adapter;
  131         struct scsipi_channel sc_channel;
  132 
  133         /* Lists of command blocks */
  134         struct oosiop_cb_queue sc_free_cb;
  135         struct oosiop_cb_queue sc_cbq;  /* command issue queue */
  136         struct oosiop_cb *sc_curcb;     /* current command */
  137         struct oosiop_cb *sc_lastcb;    /* last activated command */
  138 
  139         bus_addr_t sc_reselbuf;         /* msgin buffer for reselection */
  140         int sc_resid;                   /* reselected target id */
  141 
  142         int sc_active;
  143         int sc_nextdsp;
  144 };
  145 
  146 #define oosiop_read_1(sc, addr)                                         \
  147     bus_space_read_1((sc)->sc_bst, (sc)->sc_bsh, (addr))
  148 #define oosiop_write_1(sc, addr, data)                                  \
  149     bus_space_write_1((sc)->sc_bst, (sc)->sc_bsh, (addr), (data))
  150 /* XXX byte swapping should be handled by MD bus_space(9)? */
  151 #define oosiop_read_4(sc, addr)                                         \
  152     le32toh(bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (addr)))
  153 #define oosiop_write_4(sc, addr, data)                                  \
  154     bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (addr), htole32(data))
  155 
  156 void oosiop_attach(struct oosiop_softc *);
  157 int oosiop_intr(struct oosiop_softc *);

Cache object: 6b02287b7aa8de6280f1b7e1bfd9558c


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