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 1.12 2005/12/11 12:21:26 christos 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  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #ifndef _IC_CACVAR_H_
   40 #define _IC_CACVAR_H_
   41 
   42 #define CAC_MAX_CCBS    20
   43 #define CAC_MAX_XFER    (0xffff * 512)
   44 #define CAC_SG_SIZE     32
   45 
   46 #define cac_inb(sc, port) \
   47         bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, port)
   48 #define cac_inw(sc, port) \
   49         bus_space_read_2((sc)->sc_iot, (sc)->sc_ioh, port)
   50 #define cac_inl(sc, port) \
   51         bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, port)
   52 #define cac_outb(sc, port, val) \
   53         bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, port, val)
   54 #define cac_outw(sc, port, val) \
   55         bus_space_write_2((sc)->sc_iot, (sc)->sc_ioh, port, val)
   56 #define cac_outl(sc, port, val) \
   57         bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, port, val)
   58 
   59 /*
   60  * Stupid macros to deal with alignment/endianness issues.
   61  */
   62 
   63 #define CAC_GET1(x)                                                     \
   64         (((u_char *)&(x))[0])
   65 #define CAC_GET2(x)                                                     \
   66         (((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8))
   67 #define CAC_GET4(x)                                                     \
   68         ((((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8)) |           \
   69         (((u_char *)&(x))[0] << 16 | (((u_char *)&(x))[1] << 24)))
   70 
   71 struct cac_softc;
   72 struct cac_ccb;
   73 
   74 struct cac_context {
   75         void            (*cc_handler)(struct device *, void *, int);
   76         struct device   *cc_dv;
   77         void            *cc_context;
   78 };
   79 
   80 struct cac_ccb {
   81         /* Data the controller will touch - 276 bytes */
   82         struct cac_hdr  ccb_hdr;
   83         struct cac_req  ccb_req;
   84         struct cac_sgb  ccb_seg[CAC_SG_SIZE];
   85 
   86         /* Data the controller won't touch */
   87         int             ccb_flags;
   88         int             ccb_datasize;
   89         paddr_t         ccb_paddr;
   90         bus_dmamap_t    ccb_dmamap_xfer;
   91         SIMPLEQ_ENTRY(cac_ccb) ccb_chain;
   92         struct cac_context ccb_context;
   93 };
   94 
   95 #define CAC_CCB_DATA_IN         0x0001  /* Map describes inbound xfer */
   96 #define CAC_CCB_DATA_OUT        0x0002  /* Map describes outbound xfer */
   97 #define CAC_CCB_ACTIVE          0x0004  /* Command submitted to controller */
   98 
   99 struct cac_linkage {
  100         struct  cac_ccb *(*cl_completed)(struct cac_softc *);
  101         int     (*cl_fifo_full)(struct cac_softc *);
  102         void    (*cl_intr_enable)(struct cac_softc *, int);
  103         int     (*cl_intr_pending)(struct cac_softc *);
  104         void    (*cl_submit)(struct cac_softc *, struct cac_ccb *);
  105 };
  106 
  107 struct cac_softc {
  108         struct device           sc_dv;
  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         caddr_t                 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         struct cac_linkage      sc_cl;
  120 };
  121 
  122 struct cac_attach_args {
  123         int             caca_unit;
  124 };
  125 
  126 int     cac_cmd(struct cac_softc *, int, void *, int, int, int, int,
  127                 struct cac_context *);
  128 int     cac_init(struct cac_softc *, const char *, int);
  129 int     cac_intr(void *);
  130 
  131 extern const struct     cac_linkage cac_l0;
  132 
  133 #endif  /* !_IC_CACVAR_H_ */

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