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


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]

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

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
SearchContext: -  none  -  3  -  10 

    1 /*      $OpenBSD: siopvar.h,v 1.17 2011/09/23 10:40:06 miod Exp $ */
    2 /*      $NetBSD: siopvar.h,v 1.22 2005/11/18 23:10:32 bouyer Exp $      */
    3 
    4 /*
    5  * Copyright (c) 2000 Manuel Bouyer.
    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 ``AS IS'' AND ANY EXPRESS OR
   17  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   18  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
   19  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
   20  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
   21  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   22  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   23  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   24  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
   25  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   26  *
   27  */
   28 
   29 /* structure and definitions for the siop driver */
   30 
   31 /* Number of tag */
   32 #define SIOP_NTAG 16
   33 
   34 /*
   35  * wrap up the bus_dma api.
   36  */
   37 struct siop_dmamem {
   38         bus_dmamap_t            sdm_map;
   39         bus_dma_segment_t       sdm_seg;
   40         size_t                  sdm_size;
   41         caddr_t                 sdm_kva;
   42 };
   43 #define SIOP_DMA_MAP(_sdm)      ((_sdm)->sdm_map)
   44 #define SIOP_DMA_DVA(_sdm)      ((_sdm)->sdm_map->dm_segs[0].ds_addr)
   45 #define SIOP_DMA_KVA(_sdm)      ((void *)(_sdm)->sdm_kva)
   46 
   47 /*
   48  * xfer description of the script: tables and reselect script
   49  * In struct siop_common_cmd siop_xfer will point to this.
   50  */
   51 struct siop_xfer {
   52         struct siop_common_xfer siop_tables;
   53         /* u_int32_t resel[sizeof(load_dsa) / sizeof(load_dsa[0])]; */
   54         /* Add some entries to make size 384 bytes (244+140) */
   55         u_int32_t resel[35];
   56 } __packed;
   57 
   58 /*
   59  * This describes a command handled by the SCSI controller
   60  * These are chained in either a free list or an active list
   61  * We have one queue per target
   62  */
   63 
   64 struct siop_cmd {
   65         TAILQ_ENTRY (siop_cmd) next;
   66         struct siop_common_cmd cmd_c;
   67         struct siop_cbd *siop_cbdp; /* pointer to our siop_cbd */
   68         int reselslot;
   69         u_int32_t saved_offset; /* offset in table after disc without sdp */
   70 };
   71 #define cmd_tables cmd_c.siop_tables
   72 
   73 /* command block descriptors: an array of siop_cmd, siop_xfer, and sense */
   74 struct siop_cbd {
   75         TAILQ_ENTRY (siop_cbd) next;
   76         struct siop_cmd *cmds;
   77         struct siop_dmamem *xfers;
   78         struct siop_dmamem *sense;
   79 };
   80 
   81 /* per-tag struct */
   82 struct siop_tag {
   83         struct siop_cmd *active; /* active command */
   84         u_int reseloff;
   85 };
   86 
   87 /* per lun struct */
   88 struct siop_lun {
   89         struct siop_tag siop_tag[SIOP_NTAG]; /* tag array */
   90         int lun_flags;
   91 #define SIOP_LUNF_FULL 0x01 /* queue full message */
   92         u_int reseloff;
   93 };
   94 
   95 /*
   96  * per target struct; siop_common_cmd->target and siop_common_softc->targets[]
   97  * will point to this
   98  */
   99 struct siop_target {
  100         struct siop_common_target target_c;
  101         struct siop_lun *siop_lun[8]; /* per-lun state */
  102         u_int reseloff;
  103         struct siop_lunsw *lunsw;
  104 };
  105 
  106 struct siop_lunsw {
  107         TAILQ_ENTRY (siop_lunsw) next;
  108         u_int32_t lunsw_off; /* offset of this lun sw, from sc_scriptaddr*/
  109         u_int32_t lunsw_size; /* size of this lun sw */
  110 };
  111 
  112 
  113 TAILQ_HEAD(cmd_list, siop_cmd);
  114 TAILQ_HEAD(cbd_list, siop_cbd);
  115 TAILQ_HEAD(lunsw_list, siop_lunsw);
  116 
  117 
  118 /* Driver internal state */
  119 struct siop_softc {
  120         struct siop_common_softc sc_c;
  121         int sc_currschedslot;           /* current scheduler slot */
  122         struct cbd_list cmds;           /* list of command block descriptors */
  123         struct cmd_list free_list;      /* cmd descr free list */
  124         struct cmd_list urgent_list;    /* high priority cmd descr list */
  125         struct cmd_list ready_list;     /* cmd descr ready list */
  126         struct scsi_iopool iopool;      /* cmd pool */
  127         struct lunsw_list lunsw_list;   /* lunsw free list */
  128         u_int32_t script_free_lo;       /* free ram offset from sc_scriptaddr */
  129         u_int32_t script_free_hi;       /* free ram offset from sc_scriptaddr */
  130         int sc_ntargets;                /* number of known targets */
  131         u_int32_t sc_flags;
  132 };
  133 
  134 /* defs for sc_flags */
  135 #define SCF_CHAN_NOSLOT 0x0001          /* channel out of scheduler slot */
  136 
  137 void    siop_attach(struct siop_softc *);
  138 int     siop_intr(void *);
  139 void    siop_add_dev(struct siop_softc *, int, int);
  140 void    siop_del_dev(struct siop_softc *, int, int);

Cache object: 9968ac2e3ee446d10914414d75ab2c96


[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]


This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.