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 1.9 2002/01/25 16:10:36 ad 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 #include "locators.h"
   43 
   44 #define CAC_MAX_CCBS    20
   45 #define CAC_MAX_XFER    (0xffff * 512)
   46 #define CAC_SG_SIZE     32
   47 
   48 #define cac_inb(sc, port) \
   49         bus_space_read_1((sc)->sc_iot, (sc)->sc_ioh, port)
   50 #define cac_inw(sc, port) \
   51         bus_space_read_2((sc)->sc_iot, (sc)->sc_ioh, port)
   52 #define cac_inl(sc, port) \
   53         bus_space_read_4((sc)->sc_iot, (sc)->sc_ioh, port)
   54 #define cac_outb(sc, port, val) \
   55         bus_space_write_1((sc)->sc_iot, (sc)->sc_ioh, port, val)
   56 #define cac_outw(sc, port, val) \
   57         bus_space_write_2((sc)->sc_iot, (sc)->sc_ioh, port, val)
   58 #define cac_outl(sc, port, val) \
   59         bus_space_write_4((sc)->sc_iot, (sc)->sc_ioh, port, val)
   60 
   61 /*
   62  * Stupid macros to deal with alignment/endianness issues.
   63  */
   64 
   65 #define CAC_GET1(x)                                                     \
   66         (((u_char *)&(x))[0])
   67 #define CAC_GET2(x)                                                     \
   68         (((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8))
   69 #define CAC_GET4(x)                                                     \
   70         ((((u_char *)&(x))[0] | (((u_char *)&(x))[1] << 8)) |           \
   71         (((u_char *)&(x))[0] << 16 | (((u_char *)&(x))[1] << 24)))
   72 
   73 struct cac_softc;
   74 struct cac_ccb;
   75 
   76 struct cac_context {
   77         void            (*cc_handler)(struct device *, void *, int);
   78         struct device   *cc_dv;
   79         void            *cc_context;
   80 };
   81 
   82 struct cac_ccb {
   83         /* Data the controller will touch - 276 bytes */
   84         struct cac_hdr  ccb_hdr;
   85         struct cac_req  ccb_req;
   86         struct cac_sgb  ccb_seg[CAC_SG_SIZE];
   87 
   88         /* Data the controller won't touch */
   89         int             ccb_flags;
   90         int             ccb_datasize;
   91         paddr_t         ccb_paddr;
   92         bus_dmamap_t    ccb_dmamap_xfer;
   93         SIMPLEQ_ENTRY(cac_ccb) ccb_chain;
   94         struct cac_context ccb_context;
   95 };
   96 
   97 #define CAC_CCB_DATA_IN         0x0001  /* Map describes inbound xfer */
   98 #define CAC_CCB_DATA_OUT        0x0002  /* Map describes outbound xfer */
   99 #define CAC_CCB_ACTIVE          0x0004  /* Command submitted to controller */
  100 
  101 struct cac_linkage {
  102         struct  cac_ccb *(*cl_completed)(struct cac_softc *);
  103         int     (*cl_fifo_full)(struct cac_softc *);
  104         void    (*cl_intr_enable)(struct cac_softc *, int);
  105         int     (*cl_intr_pending)(struct cac_softc *);
  106         void    (*cl_submit)(struct cac_softc *, struct cac_ccb *);
  107 };
  108 
  109 struct cac_softc {
  110         struct device           sc_dv;
  111         bus_space_tag_t         sc_iot;
  112         bus_space_handle_t      sc_ioh;
  113         bus_dma_tag_t           sc_dmat;
  114         bus_dmamap_t            sc_dmamap;
  115         int                     sc_nunits;
  116         void                    *sc_ih;
  117         caddr_t                 sc_ccbs;
  118         paddr_t                 sc_ccbs_paddr;
  119         SIMPLEQ_HEAD(, cac_ccb) sc_ccb_free;    
  120         SIMPLEQ_HEAD(, cac_ccb) sc_ccb_queue;
  121         struct cac_linkage      sc_cl;
  122 };
  123 
  124 struct cac_attach_args {
  125         int             caca_unit;
  126 };
  127 
  128 #define cacacf_unit     cf_loc[CACCF_UNIT]
  129 
  130 int     cac_cmd(struct cac_softc *, int, void *, int, int, int, int, 
  131                 struct cac_context *);
  132 int     cac_init(struct cac_softc *, const char *, int);
  133 int     cac_intr(void *);
  134 
  135 extern const struct     cac_linkage cac_l0;
  136 
  137 #endif  /* !_IC_CACVAR_H_ */

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