sys/arm/xscale/pxa/pxa_space.c

   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("$FreeBSD$");
  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 static 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(pxa);
  61
  62 /*
  63  * The obio bus space tag.  This is constant for all instances, so
  64  * we never have to explicitly "create" it.
  65  */
  66 struct bus_space _base_tag = {
  67         /* cookie */
  68         .bs_privdata    = NULL,
  69
  70         /* mapping/unmapping */
  71         .bs_map         = generic_bs_map,
  72         .bs_unmap       = generic_bs_unmap,
  73         .bs_subregion   = generic_bs_subregion,
  74
  75         /* allocation/deallocation */
  76         .bs_alloc       = generic_bs_alloc,
  77         .bs_free        = generic_bs_free,
  78
  79         /* barrier */
  80         .bs_barrier     = generic_bs_barrier,
  81
  82         /* read (single) */
  83         .bs_r_1         = pxa_bs_r_1,
  84         .bs_r_2         = pxa_bs_r_2,
  85         .bs_r_4         = pxa_bs_r_4,
  86         .bs_r_8         = BS_UNIMPLEMENTED,
  87
  88         /* read multiple */
  89         .bs_rm_1        = pxa_bs_rm_1,
  90         .bs_rm_2        = pxa_bs_rm_2,
  91         .bs_rm_4        = BS_UNIMPLEMENTED,
  92         .bs_rm_8        = BS_UNIMPLEMENTED,
  93
  94         /* read region */
  95         .bs_rr_1        = pxa_bs_rr_1,
  96         .bs_rr_2        = BS_UNIMPLEMENTED,
  97         .bs_rr_4        = BS_UNIMPLEMENTED,
  98         .bs_rr_8        = BS_UNIMPLEMENTED,
  99
 100         /* write (single) */
 101         .bs_w_1         = pxa_bs_w_1,
 102         .bs_w_2         = pxa_bs_w_2,
 103         .bs_w_4         = pxa_bs_w_4,
 104         .bs_w_8         = BS_UNIMPLEMENTED,
 105
 106         /* write multiple */
 107         .bs_wm_1        = pxa_bs_wm_1,
 108         .bs_wm_2        = pxa_bs_wm_2,
 109         .bs_wm_4        = BS_UNIMPLEMENTED,
 110         .bs_wm_8        = BS_UNIMPLEMENTED,
 111
 112         /* write region */
 113         .bs_wr_1        = BS_UNIMPLEMENTED,
 114         .bs_wr_2        = BS_UNIMPLEMENTED,
 115         .bs_wr_4        = BS_UNIMPLEMENTED,
 116         .bs_wr_8        = BS_UNIMPLEMENTED,
 117
 118         /* set multiple */
 119         .bs_sm_1        = BS_UNIMPLEMENTED,
 120         .bs_sm_2        = BS_UNIMPLEMENTED,
 121         .bs_sm_4        = BS_UNIMPLEMENTED,
 122         .bs_sm_8        = BS_UNIMPLEMENTED,
 123
 124         /* set region */
 125         .bs_sr_1        = BS_UNIMPLEMENTED,
 126         .bs_sr_2        = BS_UNIMPLEMENTED,
 127         .bs_sr_4        = BS_UNIMPLEMENTED,
 128         .bs_sr_8        = BS_UNIMPLEMENTED,
 129
 130         /* copy */
 131         .bs_c_1         = BS_UNIMPLEMENTED,
 132         .bs_c_2         = BS_UNIMPLEMENTED,
 133         .bs_c_4         = BS_UNIMPLEMENTED,
 134         .bs_c_8         = BS_UNIMPLEMENTED,
 135
 136         /* read stream (single) */
 137         .bs_r_1_s       = BS_UNIMPLEMENTED,
 138         .bs_r_2_s       = BS_UNIMPLEMENTED,
 139         .bs_r_4_s       = BS_UNIMPLEMENTED,
 140         .bs_r_8_s       = BS_UNIMPLEMENTED,
 141
 142         /* read multiple stream */
 143         .bs_rm_1_s      = BS_UNIMPLEMENTED,
 144         .bs_rm_2_s      = BS_UNIMPLEMENTED,
 145         .bs_rm_4_s      = BS_UNIMPLEMENTED,
 146         .bs_rm_8_s      = BS_UNIMPLEMENTED,
 147
 148         /* read region stream */
 149         .bs_rr_1_s      = BS_UNIMPLEMENTED,
 150         .bs_rr_2_s      = BS_UNIMPLEMENTED,
 151         .bs_rr_4_s      = BS_UNIMPLEMENTED,
 152         .bs_rr_8_s      = BS_UNIMPLEMENTED,
 153
 154         /* write stream (single) */
 155         .bs_w_1_s       = BS_UNIMPLEMENTED,
 156         .bs_w_2_s       = BS_UNIMPLEMENTED,
 157         .bs_w_4_s       = BS_UNIMPLEMENTED,
 158         .bs_w_8_s       = BS_UNIMPLEMENTED,
 159
 160         /* write multiple stream */
 161         .bs_wm_1_s      = BS_UNIMPLEMENTED,
 162         .bs_wm_2_s      = BS_UNIMPLEMENTED,
 163         .bs_wm_4_s      = BS_UNIMPLEMENTED,
 164         .bs_wm_8_s      = BS_UNIMPLEMENTED,
 165
 166         /* write region stream */
 167         .bs_wr_1_s      = BS_UNIMPLEMENTED,
 168         .bs_wr_2_s      = BS_UNIMPLEMENTED,
 169         .bs_wr_4_s      = BS_UNIMPLEMENTED,
 170         .bs_wr_8_s      = BS_UNIMPLEMENTED,
 171 };
 172
 173 static struct bus_space _obio_tag;
 174
 175 bus_space_tag_t         base_tag = &_base_tag;
 176 bus_space_tag_t         obio_tag = NULL;
 177
 178 void
 179 pxa_obio_tag_init()
 180 {
 181
 182         bcopy(&_base_tag, &_obio_tag, sizeof(struct bus_space));
 183         _obio_tag.bs_privdata = (void *)PXA2X0_PERIPH_OFFSET;
 184         obio_tag = &_obio_tag;
 185 }
 186
 187 bus_space_tag_t
 188 pxa_bus_tag_alloc(bus_addr_t offset)
 189 {
 190         struct  bus_space *tag;
 191
 192         tag = (struct bus_space *)malloc(sizeof(struct bus_space), M_PXATAG,
 193             M_WAITOK);
 194         if (tag == NULL) {
 195                 return (NULL);
 196         }
 197
 198         bcopy(&_base_tag, tag, sizeof(struct bus_space));
 199         tag->bs_privdata = (void *)offset;
 200
 201         return ((bus_space_tag_t)tag);
 202 }
 203
 204
 205 #define READ_SINGLE(type, proto, base)                                  \
 206         type                                                            \
 207         proto(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset)   \
 208         {                                                               \
 209                 bus_addr_t      tag_offset;                             \
 210                 type            value;                                  \
 211                 tag_offset = (bus_addr_t)tag->bs_privdata;              \
 212                 value = base(NULL, bsh + tag_offset, offset);           \
 213                 return (value);                                         \
 214         }
 215
 216 READ_SINGLE(u_int8_t,  pxa_bs_r_1, generic_bs_r_1)
 217 READ_SINGLE(u_int16_t, pxa_bs_r_2, generic_bs_r_2)
 218 READ_SINGLE(u_int32_t, pxa_bs_r_4, generic_bs_r_4)
 219
 220 #undef READ_SINGLE
 221
 222 #define WRITE_SINGLE(type, proto, base)                                 \
 223         void                                                            \
 224         proto(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,   \
 225             type value)                                                 \
 226         {                                                               \
 227                 bus_addr_t      tag_offset;                             \
 228                 tag_offset = (bus_addr_t)tag->bs_privdata;              \
 229                 base(NULL, bsh + tag_offset, offset, value);            \
 230         }
 231
 232 WRITE_SINGLE(u_int8_t,  pxa_bs_w_1, generic_bs_w_1)
 233 WRITE_SINGLE(u_int16_t, pxa_bs_w_2, generic_bs_w_2)
 234 WRITE_SINGLE(u_int32_t, pxa_bs_w_4, generic_bs_w_4)
 235
 236 #undef WRITE_SINGLE
 237
 238 #define READ_MULTI(type, proto, base)                                   \
 239         void                                                            \
 240         proto(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,   \
 241             type *dest, bus_size_t count)                               \
 242         {                                                               \
 243                 bus_addr_t      tag_offset;                             \
 244                 tag_offset = (bus_addr_t)tag->bs_privdata;              \
 245                 base(NULL, bsh + tag_offset, offset, dest, count);      \
 246         }
 247
 248 READ_MULTI(u_int8_t,  pxa_bs_rm_1, generic_bs_rm_1)
 249 READ_MULTI(u_int16_t, pxa_bs_rm_2, generic_bs_rm_2)
 250
 251 READ_MULTI(u_int8_t,  pxa_bs_rr_1, generic_bs_rr_1)
 252
 253 #undef READ_MULTI
 254
 255 #define WRITE_MULTI(type, proto, base)                                  \
 256         void                                                            \
 257         proto(bus_space_tag_t tag, bus_space_handle_t bsh, bus_size_t offset,   \
 258             const type *src, bus_size_t count)                          \
 259         {                                                               \
 260                 bus_addr_t      tag_offset;                             \
 261                 tag_offset = (bus_addr_t)tag->bs_privdata;              \
 262                 base(NULL, bsh + tag_offset, offset, src, count);       \
 263         }
 264
 265 WRITE_MULTI(u_int8_t,  pxa_bs_wm_1, generic_bs_wm_1)
 266 WRITE_MULTI(u_int16_t, pxa_bs_wm_2, generic_bs_wm_2)
 267
 268 #undef WRITE_MULTI