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/cacvar.h

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    1 /*      $NetBSD: cacvar.h,v 1.18 2008/04/28 20:23:49 martin Exp $       */
    2 
    3 /*-
    4  * Copyright (c) 2000 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Andrew Doran.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #ifndef _IC_CACVAR_H_
   33 #define _IC_CACVAR_H_
   34 
   35 #include <sys/mutex.h>
   36 #include <sys/condvar.h>
   37 
   38 #include <dev/sysmon/sysmonvar.h>
   39 #include <sys/envsys.h>
   40 
   41 #define CAC_MAX_CCBS    256
   42 #define CAC_MAX_XFER    (0xffff * 512)
   43 #define CAC_SG_SIZE     32
   44 
   45 #define cac_inb(sc, port) \
   46         bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, port)
   47 #define cac_inw(sc, port) \
   48         bus_space_read_2((sc)->sc_iot, (sc)->sc_ioh, port)
   49 #define cac_inl(sc, port) \
   50         bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, port)
   51 #define cac_outb(sc, port, val) \
   52         bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, port, val)
   53 #define cac_outw(sc, port, val) \
   54         bus_space_write_2((sc)->sc_iot, (sc)->sc_ioh, port, val)
   55 #define cac_outl(sc, port, val) \
   56         bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, port, val)
   57 
   58 /*
   59  * Stupid macros to deal with alignment/endianness issues.
   60  */
   61 
   62 #define CAC_GET1(x)                                                     \
   63         (((u_char *)&(x))[0])
   64 #define CAC_GET2(x)                                                     \
   65         (((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8))
   66 #define CAC_GET4(x)                                                     \
   67         ((((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8)) |           \
   68         (((u_char *)&(x))[2] << 16 | (((u_char *)&(x))[3] << 24)))
   69 
   70 struct cac_softc;
   71 struct cac_ccb;
   72 
   73 struct cac_context {
   74         void            (*cc_handler)(struct device *, void *, int);
   75         struct device   *cc_dv;
   76         void            *cc_context;
   77 };
   78 
   79 struct cac_ccb {
   80         /* Data the controller will touch - 276 bytes */
   81         struct cac_hdr  ccb_hdr;
   82         struct cac_req  ccb_req;
   83         struct cac_sgb  ccb_seg[CAC_SG_SIZE];
   84 
   85         /* Data the controller won't touch */
   86         int             ccb_flags;
   87         int             ccb_datasize;
   88         paddr_t         ccb_paddr;
   89         bus_dmamap_t    ccb_dmamap_xfer;
   90         SIMPLEQ_ENTRY(cac_ccb) ccb_chain;
   91         struct cac_context ccb_context;
   92 };
   93 
   94 #define CAC_CCB_DATA_IN         0x0001  /* Map describes inbound xfer */
   95 #define CAC_CCB_DATA_OUT        0x0002  /* Map describes outbound xfer */
   96 #define CAC_CCB_ACTIVE          0x0004  /* Command submitted to controller */
   97 
   98 struct cac_linkage {
   99         struct  cac_ccb *(*cl_completed)(struct cac_softc *);
  100         int     (*cl_fifo_full)(struct cac_softc *);
  101         void    (*cl_intr_enable)(struct cac_softc *, int);
  102         int     (*cl_intr_pending)(struct cac_softc *);
  103         void    (*cl_submit)(struct cac_softc *, struct cac_ccb *);
  104 };
  105 
  106 struct cac_softc {
  107         struct device           sc_dv;
  108         kmutex_t                sc_mutex;
  109         bus_space_tag_t         sc_iot;
  110         bus_space_handle_t      sc_ioh;
  111         bus_dma_tag_t           sc_dmat;
  112         bus_dmamap_t            sc_dmamap;
  113         int                     sc_nunits;
  114         void                    *sc_ih;
  115         void *                  sc_ccbs;
  116         paddr_t                 sc_ccbs_paddr;
  117         SIMPLEQ_HEAD(, cac_ccb) sc_ccb_free;
  118         SIMPLEQ_HEAD(, cac_ccb) sc_ccb_queue;
  119         kcondvar_t              sc_ccb_cv;
  120         struct cac_linkage      sc_cl;
  121 
  122         /* scsi ioctl from sd device */
  123         int                     (*sc_ioctl)(struct device *, u_long, void *);
  124 
  125         struct sysmon_envsys    *sc_sme;
  126         envsys_data_t           *sc_sensor;
  127 };
  128 
  129 /* XXX These have to become spinlocks in case of fine SMP */
  130 #define CAC_LOCK(sc) splbio()
  131 #define CAC_UNLOCK(sc, lock) splx(lock)
  132 typedef int cac_lock_t;
  133 
  134 struct cac_attach_args {
  135         int             caca_unit;
  136 };
  137 
  138 int     cac_cmd(struct cac_softc *, int, void *, int, int, int, int,
  139                 struct cac_context *);
  140 int     cac_init(struct cac_softc *, const char *, int);
  141 int     cac_intr(void *);
  142 
  143 extern const struct     cac_linkage cac_l0;
  144 
  145 #endif  /* !_IC_CACVAR_H_ */

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