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/ct/ct_machdep.h

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    1 /* $FreeBSD: releng/10.3/sys/dev/ct/ct_machdep.h 242871 2012-11-10 14:58:06Z nyan $ */
    2 /*      $NecBSD: ct_machdep.h,v 1.4.12.2 2001/06/20 06:13:34 honda Exp $        */
    3 /*      $NetBSD$        */
    4 
    5 /*-
    6  * [NetBSD for NEC PC-98 series]
    7  *  Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
    8  *      NetBSD/pc98 porting staff. All rights reserved.
    9  *  Copyright (c) 1995, 1996, 1997, 1998, 1999, 2000, 2001
   10  *      Naofumi HONDA. All rights reserved.
   11  * 
   12  *  Redistribution and use in source and binary forms, with or without
   13  *  modification, are permitted provided that the following conditions
   14  *  are met:
   15  *  1. Redistributions of source code must retain the above copyright
   16  *     notice, this list of conditions and the following disclaimer.
   17  *  2. Redistributions in binary form must reproduce the above copyright
   18  *     notice, this list of conditions and the following disclaimer in the
   19  *     documentation and/or other materials provided with the distribution.
   20  *  3. The name of the author may not be used to endorse or promote products
   21  *     derived from this software without specific prior written permission.
   22  * 
   23  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
   24  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
   25  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
   26  * DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
   27  * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
   28  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
   29  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
   30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
   31  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   32  * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   33  * POSSIBILITY OF SUCH DAMAGE.
   34  */
   35 
   36 #ifndef _CT_MACHDEP_H_
   37 #define _CT_MACHDEP_H_
   38 
   39 #include "opt_ct.h"
   40 
   41 /*
   42  * Principal rules: 
   43  * 1) do not use bus_space_write/read_X directly in ct.c.
   44  * 2) do not use port offset defs directly in ct.c.
   45  */
   46 
   47 /* special weight if requried */
   48 #ifdef  CT_BUS_WEIGHT
   49 #undef  CT_BUS_WEIGHT
   50 #define CT_BUS_WEIGHT(chp)                      \
   51 {                                               \
   52         if ((chp)->ch_bus_weight != NULL)       \
   53                 (chp)->ch_bus_weight((chp));    \
   54 }
   55 #else   /* !CT_BUS_WEIGHT */
   56 #define CT_BUS_WEIGHT(chp)
   57 #endif  /* !CT_BUS_WEIGHT */
   58 
   59 /* port offset */
   60 #ifndef CT_USE_RELOCATE_OFFSET
   61 #define addr_port       0
   62 #define stat_port       0
   63 #define ctrl_port       2
   64 #define cmd_port        4
   65 #else   /* CT_USE_RELOCATE_OFFSET */
   66 #define addr_port       ((chp)->ch_offset[0])
   67 #define stat_port       ((chp)->ch_offset[1])
   68 #define ctrl_port       ((chp)->ch_offset[2])
   69 #define cmd_port        ((chp)->ch_offset[3])
   70 #endif  /* CT_USE_RELOCATE_OFFSET */
   71 
   72 /*
   73  * All port accesses primitive methods
   74  */
   75 static __inline u_int8_t ct_stat_read_1
   76         (struct ct_bus_access_handle *);
   77 static __inline u_int8_t ct_cmdp_read_1
   78         (struct ct_bus_access_handle *);
   79 static __inline void ct_cmdp_write_1
   80         (struct ct_bus_access_handle *, u_int8_t);
   81 static __inline u_int8_t ct_cr_read_1
   82         (struct ct_bus_access_handle *, bus_addr_t);
   83 static __inline void ct_cr_write_1
   84         (struct ct_bus_access_handle *, bus_addr_t, u_int8_t);
   85 static __inline void ct_write_cmds
   86         (struct ct_bus_access_handle *, u_int8_t *, int);
   87 static __inline u_int cthw_get_count
   88         (struct ct_bus_access_handle *);
   89 static __inline void cthw_set_count
   90         (struct ct_bus_access_handle *, u_int);
   91 
   92 static __inline u_int8_t
   93 ct_stat_read_1(struct ct_bus_access_handle *chp)
   94 {
   95         u_int8_t regv;
   96 
   97         regv = bus_space_read_1(chp->ch_iot, chp->ch_ioh, stat_port);
   98         CT_BUS_WEIGHT(chp)
   99         return regv;
  100 }
  101 
  102 static __inline void
  103 cthw_set_count(struct ct_bus_access_handle *chp, u_int count)
  104 {
  105         bus_space_tag_t bst = chp->ch_iot;
  106         bus_space_handle_t bsh = chp->ch_ioh;
  107 
  108         bus_space_write_1(bst, bsh, addr_port, wd3s_cnt);
  109         CT_BUS_WEIGHT(chp)
  110         bus_space_write_1(bst, bsh, ctrl_port, count >> 16);
  111         CT_BUS_WEIGHT(chp)
  112         bus_space_write_1(bst, bsh, ctrl_port, count >> 8);
  113         CT_BUS_WEIGHT(chp)
  114         bus_space_write_1(bst, bsh, ctrl_port, count);
  115         CT_BUS_WEIGHT(chp)
  116 }
  117 
  118 static __inline u_int
  119 cthw_get_count(struct ct_bus_access_handle *chp)
  120 {
  121         bus_space_tag_t bst = chp->ch_iot;
  122         bus_space_handle_t bsh = chp->ch_ioh;
  123         u_int count;
  124 
  125         bus_space_write_1(bst, bsh, addr_port, wd3s_cnt);
  126         CT_BUS_WEIGHT(chp)
  127         count = (((u_int) bus_space_read_1(bst, bsh, ctrl_port)) << 16);
  128         CT_BUS_WEIGHT(chp)
  129         count += (((u_int) bus_space_read_1(bst, bsh, ctrl_port)) << 8);
  130         CT_BUS_WEIGHT(chp)
  131         count += ((u_int) bus_space_read_1(bst, bsh, ctrl_port));
  132         CT_BUS_WEIGHT(chp)
  133         return count;
  134 }
  135 
  136 static __inline void
  137 ct_write_cmds(struct ct_bus_access_handle *chp, u_int8_t *cmd, int len)
  138 {
  139         bus_space_tag_t bst = chp->ch_iot;
  140         bus_space_handle_t bsh = chp->ch_ioh;
  141         int i;
  142 
  143         bus_space_write_1(bst, bsh, addr_port, wd3s_cdb);
  144         CT_BUS_WEIGHT(chp)
  145         for (i = 0; i < len; i ++)
  146         {
  147                 bus_space_write_1(bst, bsh, ctrl_port, cmd[i]);
  148                 CT_BUS_WEIGHT(chp)
  149         }
  150 }       
  151 
  152 static __inline u_int8_t
  153 ct_cr_read_1(struct ct_bus_access_handle *chp, bus_addr_t offs)
  154 {
  155         bus_space_tag_t bst = chp->ch_iot;
  156         bus_space_handle_t bsh = chp->ch_ioh;
  157         u_int8_t regv;
  158 
  159         bus_space_write_1(bst, bsh, addr_port, offs);
  160         CT_BUS_WEIGHT(chp)
  161         regv = bus_space_read_1(bst, bsh, ctrl_port);
  162         CT_BUS_WEIGHT(chp)
  163         return regv;
  164 }
  165 
  166 static __inline void
  167 ct_cr_write_1(struct ct_bus_access_handle *chp, bus_addr_t offs, u_int8_t val)
  168 {
  169         bus_space_tag_t bst = chp->ch_iot;
  170         bus_space_handle_t bsh = chp->ch_ioh;
  171 
  172         bus_space_write_1(bst, bsh, addr_port, offs);
  173         CT_BUS_WEIGHT(chp)
  174         bus_space_write_1(bst, bsh, ctrl_port, val);
  175         CT_BUS_WEIGHT(chp)
  176 }
  177 
  178 static __inline u_int8_t
  179 ct_cmdp_read_1(struct ct_bus_access_handle *chp)
  180 {
  181         u_int8_t regv;
  182 
  183         regv = bus_space_read_1(chp->ch_iot, chp->ch_ioh, cmd_port);
  184         CT_BUS_WEIGHT(chp)
  185         return regv;
  186 }
  187 
  188 static __inline void
  189 ct_cmdp_write_1(struct ct_bus_access_handle *chp, u_int8_t val)
  190 {
  191 
  192         bus_space_write_1(chp->ch_iot, chp->ch_ioh, cmd_port, val);
  193         CT_BUS_WEIGHT(chp)
  194 }
  195 
  196 #endif  /* !_CT_MACHDEP_H_ */

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