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/arm/xscale/pxa/pxa_space.c

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    1 /*      $NetBSD: obio_space.c,v 1.6 2003/07/15 00:25:05 lukem Exp $     */
    2 
    3 /*-
    4  * Copyright (c) 2001, 2002, 2003 Wasabi Systems, Inc.
    5  * All rights reserved.
    6  *
    7  * Written by Jason R. Thorpe for Wasabi Systems, Inc.
    8  *
    9  * Redistribution and use in source and binary forms, with or without
   10  * modification, are permitted provided that the following conditions
   11  * are met:
   12  * 1. Redistributions of source code must retain the above copyright
   13  *    notice, this list of conditions and the following disclaimer.
   14  * 2. Redistributions in binary form must reproduce the above copyright
   15  *    notice, this list of conditions and the following disclaimer in the
   16  *    documentation and/or other materials provided with the distribution.
   17  * 3. All advertising materials mentioning features or use of this software
   18  *    must display the following acknowledgement:
   19  *      This product includes software developed for the NetBSD Project by
   20  *      Wasabi Systems, Inc.
   21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
   22  *    or promote products derived from this software without specific prior
   23  *    written permission.
   24  *
   25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
   26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
   29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   35  * POSSIBILITY OF SUCH DAMAGE.
   36  */
   37 
   38 /*
   39  * bus_space functions for PXA devices
   40  */
   41 
   42 #include <sys/cdefs.h>
   43 __FBSDID("$FreeBSD: releng/9.0/sys/arm/xscale/pxa/pxa_space.c 179700 2008-06-10 03:44:14Z kevlo $");
   44 
   45 #include <sys/param.h>
   46 #include <sys/systm.h>
   47 #include <sys/bus.h>
   48 #include <sys/kernel.h>
   49 #include <sys/malloc.h>
   50 
   51 #include <machine/bus.h>
   52 
   53 #include <arm/xscale/pxa/pxareg.h>
   54 #include <arm/xscale/pxa/pxavar.h>
   55 
   56 MALLOC_DEFINE(M_PXATAG, "PXA bus_space tags", "Bus_space tags for PXA");
   57 
   58 /* Prototypes for all the bus_space structure functions */
   59 bs_protos(generic);
   60 bs_protos(generic_armv4);
   61 bs_protos(pxa);
   62 
   63 /*
   64  * The obio bus space tag.  This is constant for all instances, so
   65  * we never have to explicitly "create" it.
   66  */
   67 struct bus_space _base_tag = {
   68         /* cookie */
   69         (void *) 0,
   70 
   71         /* mapping/unmapping */
   72         generic_bs_map,
   73         generic_bs_unmap,
   74         generic_bs_subregion,
   75 
   76         /* allocation/deallocation */
   77         generic_bs_alloc,
   78         generic_bs_free,
   79 
   80         /* barrier */
   81         generic_bs_barrier,
   82 
   83         /* read (single) */
   84         pxa_bs_r_1,
   85         pxa_bs_r_2,
   86         pxa_bs_r_4,
   87         NULL,
   88 
   89         /* read multiple */
   90         pxa_bs_rm_1,
   91         pxa_bs_rm_2,
   92         NULL,
   93         NULL,
   94 
   95         /* read region */
   96         pxa_bs_rr_1,
   97         NULL,
   98         NULL,
   99         NULL,
  100 
  101         /* write (single) */
  102         pxa_bs_w_1,
  103         pxa_bs_w_2,
  104         pxa_bs_w_4,
  105         NULL,
  106 
  107         /* write multiple */
  108         pxa_bs_wm_1,
  109         pxa_bs_wm_2,
  110         NULL,
  111         NULL,
  112 
  113         /* write region */
  114         NULL,
  115         NULL,
  116         NULL,
  117         NULL,
  118 
  119         /* set multiple */
  120         NULL,
  121         NULL,
  122         NULL,
  123         NULL,
  124 
  125         /* set region */
  126         NULL,
  127         NULL,
  128         NULL,
  129         NULL,
  130 
  131         /* copy */
  132         NULL,
  133         NULL,
  134         NULL,
  135         NULL,
  136 };
  137 
  138 static struct bus_space _obio_tag;
  139 
  140 bus_space_tag_t         base_tag = &_base_tag;
  141 bus_space_tag_t         obio_tag = NULL;
  142 
  143 void
  144 pxa_obio_tag_init()
  145 {
  146 
  147         bcopy(&_base_tag, &_obio_tag, sizeof(struct bus_space));
  148         _obio_tag.bs_cookie = (void *)PXA2X0_PERIPH_OFFSET;
  149         obio_tag = &_obio_tag;
  150 }
  151 
  152 bus_space_tag_t
  153 pxa_bus_tag_alloc(bus_addr_t offset)
  154 {
  155         struct  bus_space *tag;
  156 
  157         tag = (struct bus_space *)malloc(sizeof(struct bus_space), M_PXATAG,
  158             M_WAITOK);
  159         if (tag == NULL) {
  160                 return (NULL);
  161         }
  162 
  163         bcopy(&_base_tag, tag, sizeof(struct bus_space));
  164         tag->bs_cookie = (void *)offset;
  165 
  166         return ((bus_space_tag_t)tag);
  167 }
  168 
  169 
  170 #define READ_SINGLE(type, proto, base)                                  \
  171         type                                                            \
  172         proto(void *cookie, bus_space_handle_t bsh, bus_size_t offset)  \
  173         {                                                               \
  174                 bus_addr_t      tag_offset;                             \
  175                 type            value;                                  \
  176                 tag_offset = (bus_addr_t)cookie;                        \
  177                 value = base(NULL, bsh + tag_offset, offset);           \
  178                 return (value);                                         \
  179         }
  180 
  181 READ_SINGLE(u_int8_t,  pxa_bs_r_1, generic_bs_r_1)
  182 READ_SINGLE(u_int16_t, pxa_bs_r_2, generic_armv4_bs_r_2)
  183 READ_SINGLE(u_int32_t, pxa_bs_r_4, generic_bs_r_4)
  184 
  185 #undef READ_SINGLE
  186 
  187 #define WRITE_SINGLE(type, proto, base)                                 \
  188         void                                                            \
  189         proto(void *cookie, bus_space_handle_t bsh, bus_size_t offset,  \
  190             type value)                                                 \
  191         {                                                               \
  192                 bus_addr_t      tag_offset;                             \
  193                 tag_offset = (bus_addr_t)cookie;                        \
  194                 base(NULL, bsh + tag_offset, offset, value);            \
  195         }
  196 
  197 WRITE_SINGLE(u_int8_t,  pxa_bs_w_1, generic_bs_w_1)
  198 WRITE_SINGLE(u_int16_t, pxa_bs_w_2, generic_armv4_bs_w_2)
  199 WRITE_SINGLE(u_int32_t, pxa_bs_w_4, generic_bs_w_4)
  200 
  201 #undef WRITE_SINGLE
  202 
  203 #define READ_MULTI(type, proto, base)                                   \
  204         void                                                            \
  205         proto(void *cookie, bus_space_handle_t bsh, bus_size_t offset,  \
  206             type *dest, bus_size_t count)                               \
  207         {                                                               \
  208                 bus_addr_t      tag_offset;                             \
  209                 tag_offset = (bus_addr_t)cookie;                        \
  210                 base(NULL, bsh + tag_offset, offset, dest, count);      \
  211         }
  212 
  213 READ_MULTI(u_int8_t,  pxa_bs_rm_1, generic_bs_rm_1)
  214 READ_MULTI(u_int16_t, pxa_bs_rm_2, generic_armv4_bs_rm_2)
  215 
  216 READ_MULTI(u_int8_t,  pxa_bs_rr_1, generic_bs_rr_1)
  217 
  218 #undef READ_MULTI
  219 
  220 #define WRITE_MULTI(type, proto, base)                                  \
  221         void                                                            \
  222         proto(void *cookie, bus_space_handle_t bsh, bus_size_t offset,  \
  223             const type *src, bus_size_t count)                          \
  224         {                                                               \
  225                 bus_addr_t      tag_offset;                             \
  226                 tag_offset = (bus_addr_t)cookie;                        \
  227                 base(NULL, bsh + tag_offset, offset, src, count);       \
  228         }
  229 
  230 WRITE_MULTI(u_int8_t,  pxa_bs_wm_1, generic_bs_wm_1)
  231 WRITE_MULTI(u_int16_t, pxa_bs_wm_2, generic_armv4_bs_wm_2)
  232 
  233 #undef WRITE_MULTI

Cache object: 1086bf564f7627d5fedd018cec9c85d7


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