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 /* $OpenBSD: oosiopvar.h,v 1.6 2020/07/22 13:16:04 krw Exp $ */
    2 /* $NetBSD: oosiopvar.h,v 1.2 2003/05/03 18:11:23 wiz Exp $ */
    3 
    4 /*
    5  * Copyright (c) 2001 Shuichiro URATA.  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  * 3. The name of the author may not be used to endorse or promote products
   16  *    derived from this software without specific prior written permission.
   17  *
   18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   28  */
   29 
   30 #include <uvm/uvm_extern.h>
   31 
   32 #define OOSIOP_NTGT     8               /* Max targets */
   33 #define OOSIOP_NCB      32              /* Initial command buffers */
   34 #define OOSIOP_NSG      (MIN(atop(MAXPHYS) + 1, 32)) /* Max S/G operation */
   35 #define OOSIOP_MAX_XFER ptoa(OOSIOP_NSG - 1)
   36 
   37 struct oosiop_xfer {
   38         /* script for scatter/gather DMA (move*nsg+jump) */
   39         u_int32_t datain_scr[(OOSIOP_NSG + 1) * 2];
   40         u_int32_t dataout_scr[(OOSIOP_NSG + 1) * 2];
   41 
   42         u_int8_t msgin[8];
   43         u_int8_t msgout[8];
   44         u_int8_t status;
   45         u_int8_t pad[7];
   46 } __packed;
   47 
   48 #define SCSI_OOSIOP_NOSTATUS    0xff    /* device didn't report status */
   49 
   50 #define OOSIOP_XFEROFF(x)       offsetof(struct oosiop_xfer, x)
   51 #define OOSIOP_DINSCROFF        OOSIOP_XFEROFF(datain_scr[0])
   52 #define OOSIOP_DOUTSCROFF       OOSIOP_XFEROFF(dataout_scr[0])
   53 #define OOSIOP_MSGINOFF         OOSIOP_XFEROFF(msgin[0])
   54 #define OOSIOP_MSGOUTOFF        OOSIOP_XFEROFF(msgout[0])
   55 
   56 #define OOSIOP_XFERSCR_SYNC(sc, cb, ops)                                \
   57         bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
   58             OOSIOP_MSGINOFF - OOSIOP_DINSCROFF, (ops))
   59 #define OOSIOP_DINSCR_SYNC(sc, cb, ops)                                 \
   60         bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
   61             OOSIOP_DOUTSCROFF - OOSIOP_DINSCROFF, (ops))
   62 #define OOSIOP_DOUTSCR_SYNC(sc, cb, ops)                                \
   63         bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DOUTSCROFF,\
   64             OOSIOP_MSGINOFF - OOSIOP_DOUTSCROFF, (ops))
   65 #define OOSIOP_XFERMSG_SYNC(sc, cb, ops)                                \
   66         bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_MSGINOFF,  \
   67             sizeof(struct oosiop_xfer) - OOSIOP_MSGINOFF, (ops))
   68 
   69 #define OOSIOP_SCRIPT_SYNC(sc, ops)                                     \
   70         bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_scrdma,                 \
   71             0, sizeof(oosiop_script), (ops))
   72 
   73 struct oosiop_cb {
   74         TAILQ_ENTRY(oosiop_cb) chain;
   75 
   76         struct scsi_xfer *xs;           /* SCSI xfer ctrl block from above */
   77         int flags;
   78         int id;                         /* target scsi id */
   79         int lun;                        /* target lun */
   80 
   81         bus_dmamap_t cmddma;            /* DMA map for command out */
   82         bus_dmamap_t datadma;           /* DMA map for data I/O */
   83         bus_dmamap_t xferdma;           /* DMA map for xfer block */
   84 
   85         int curdp;                      /* current data pointer */
   86         int savedp;                     /* saved data pointer */
   87         int msgoutlen;
   88 
   89         int xsflags;                    /* copy of xs->flags */
   90         int datalen;                    /* copy of xs->datalen */
   91         int cmdlen;                     /* copy of xs->cmdlen */
   92 
   93         struct oosiop_xfer *xfer;       /* DMA xfer block */
   94 };
   95 
   96 /* oosiop_cb flags */
   97 #define CBF_SELTOUT     0x01    /* Selection timeout */
   98 #define CBF_TIMEOUT     0x02    /* Command timeout */
   99 #define CBF_AUTOSENSE   0x04    /* Request sense due to SCSI_CHECK */
  100 
  101 struct oosiop_target {
  102         struct oosiop_cb *nexus;
  103         int flags;
  104         u_int8_t scf;           /* synchronous clock divisor */
  105         u_int8_t sxfer;         /* synchronous period and offset */
  106 };
  107 
  108 /* target flags */
  109 #define TGTF_SYNCNEG    0x01    /* Trigger synchronous negotiation */
  110 #define TGTF_WAITSDTR   0x02    /* Waiting SDTR from target */
  111 
  112 struct oosiop_softc {
  113         struct device sc_dev;
  114 
  115         bus_space_tag_t sc_bst;         /* bus space tag */
  116         bus_space_handle_t sc_bsh;      /* bus space handle */
  117 
  118         bus_dma_tag_t sc_dmat;          /* bus DMA tag */
  119         bus_dmamap_t sc_scrdma;         /* script DMA map */
  120 
  121         bus_addr_t sc_scrbase;          /* script DMA base address */
  122         u_int32_t *sc_scr;              /* ptr to script memory */
  123 
  124         int sc_chip;                    /* 700 or 700-66 */
  125 #define OOSIOP_700      0
  126 #define OOSIOP_700_66   1
  127 
  128         int             sc_id;          /* SCSI ID of this interface */
  129         int             sc_freq;        /* SCLK frequency */
  130         int             sc_ccf;         /* asynchronous divisor (*10) */
  131         u_int8_t        sc_dcntl;
  132         u_int8_t        sc_minperiod;
  133 
  134         struct oosiop_target sc_tgt[OOSIOP_NTGT];
  135 
  136         /* Lists of command blocks */
  137         TAILQ_HEAD(oosiop_cb_queue, oosiop_cb) sc_free_cb,
  138                                                sc_cbq;
  139 
  140         struct mutex            sc_cb_mtx;
  141         struct scsi_iopool      sc_iopool;
  142 
  143         struct oosiop_cb *sc_curcb;     /* current command */
  144         struct oosiop_cb *sc_lastcb;    /* last activated command */
  145 
  146         bus_addr_t sc_reselbuf;         /* msgin buffer for reselection */
  147         int sc_resid;                   /* reselected target id */
  148 
  149         int sc_active;
  150         int sc_nextdsp;
  151 
  152         uint8_t sc_scntl0;
  153         uint8_t sc_dmode;
  154         uint8_t sc_dwt;
  155         uint8_t sc_ctest7;
  156 };
  157 
  158 #define oosiop_read_1(sc, addr)                                         \
  159     bus_space_read_1((sc)->sc_bst, (sc)->sc_bsh, (addr))
  160 #define oosiop_write_1(sc, addr, data)                                  \
  161     bus_space_write_1((sc)->sc_bst, (sc)->sc_bsh, (addr), (data))
  162 /* XXX byte swapping should be handled by MD bus_space(9)? */
  163 #define oosiop_read_4(sc, addr)                                         \
  164     letoh32(bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (addr)))
  165 #define oosiop_write_4(sc, addr, data)                                  \
  166     bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (addr), htole32(data))
  167 
  168 void oosiop_attach(struct oosiop_softc *);
  169 int oosiop_intr(struct oosiop_softc *);

Cache object: 12f0da95a170e7bd1f9c6c4d43b444a8


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