sys/arm64/arm64/bus_machdep.c

   1 /*-
   2  * Copyright (c) 2014 Andrew Turner
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  */
  27
  28 #define KCSAN_RUNTIME
  29
  30 #include "opt_platform.h"
  31
  32 #include <sys/param.h>
  33 __FBSDID("$FreeBSD$");
  34
  35 #include <vm/vm.h>
  36 #include <vm/pmap.h>
  37
  38 #include <machine/bus.h>
  39
  40 uint8_t  generic_bs_r_1(void *, bus_space_handle_t, bus_size_t);
  41 uint16_t generic_bs_r_2(void *, bus_space_handle_t, bus_size_t);
  42 uint32_t generic_bs_r_4(void *, bus_space_handle_t, bus_size_t);
  43 uint64_t generic_bs_r_8(void *, bus_space_handle_t, bus_size_t);
  44
  45 void generic_bs_rm_1(void *, bus_space_handle_t, bus_size_t, uint8_t *,
  46     bus_size_t);
  47 void generic_bs_rm_2(void *, bus_space_handle_t, bus_size_t, uint16_t *,
  48     bus_size_t);
  49 void generic_bs_rm_4(void *, bus_space_handle_t, bus_size_t, uint32_t *,
  50     bus_size_t);
  51 void generic_bs_rm_8(void *, bus_space_handle_t, bus_size_t, uint64_t *,
  52     bus_size_t);
  53
  54 void generic_bs_rr_1(void *, bus_space_handle_t, bus_size_t, uint8_t *,
  55     bus_size_t);
  56 void generic_bs_rr_2(void *, bus_space_handle_t, bus_size_t, uint16_t *,
  57     bus_size_t);
  58 void generic_bs_rr_4(void *, bus_space_handle_t, bus_size_t, uint32_t *,
  59     bus_size_t);
  60 void generic_bs_rr_8(void *, bus_space_handle_t, bus_size_t, uint64_t *,
  61     bus_size_t);
  62
  63 void generic_bs_w_1(void *, bus_space_handle_t, bus_size_t, uint8_t);
  64 void generic_bs_w_2(void *, bus_space_handle_t, bus_size_t, uint16_t);
  65 void generic_bs_w_4(void *, bus_space_handle_t, bus_size_t, uint32_t);
  66 void generic_bs_w_8(void *, bus_space_handle_t, bus_size_t, uint64_t);
  67
  68 void generic_bs_wm_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *,
  69     bus_size_t);
  70 void generic_bs_wm_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *,
  71     bus_size_t);
  72 void generic_bs_wm_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *,
  73     bus_size_t);
  74 void generic_bs_wm_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *,
  75     bus_size_t);
  76
  77 void generic_bs_wr_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *,
  78     bus_size_t);
  79 void generic_bs_wr_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *,
  80     bus_size_t);
  81 void generic_bs_wr_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *,
  82     bus_size_t);
  83 void generic_bs_wr_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *,
  84     bus_size_t);
  85
  86 int generic_bs_peek_1(void *, bus_space_handle_t,  bus_size_t , uint8_t *);
  87 int generic_bs_peek_2(void *, bus_space_handle_t,  bus_size_t , uint16_t *);
  88 int generic_bs_peek_4(void *, bus_space_handle_t,  bus_size_t , uint32_t *);
  89 int generic_bs_peek_8(void *, bus_space_handle_t,  bus_size_t , uint64_t *);
  90
  91 int generic_bs_poke_1(void *, bus_space_handle_t,  bus_size_t, uint8_t);
  92 int generic_bs_poke_2(void *, bus_space_handle_t,  bus_size_t, uint16_t);
  93 int generic_bs_poke_4(void *, bus_space_handle_t,  bus_size_t, uint32_t);
  94 int generic_bs_poke_8(void *, bus_space_handle_t,  bus_size_t, uint64_t);
  95
  96 static int
  97 generic_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags,
  98     bus_space_handle_t *bshp)
  99 {
 100         void *va;
 101
 102         va = pmap_mapdev(bpa, size);
 103         if (va == NULL)
 104                 return (ENOMEM);
 105         *bshp = (bus_space_handle_t)va;
 106         return (0);
 107 }
 108
 109 static void
 110 generic_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size)
 111 {
 112
 113         pmap_unmapdev(bsh, size);
 114 }
 115
 116 static void
 117 generic_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset,
 118     bus_size_t size, int flags)
 119 {
 120 }
 121
 122 static int
 123 generic_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset,
 124     bus_size_t size, bus_space_handle_t *nbshp)
 125 {
 126
 127         *nbshp = bsh + offset;
 128         return (0);
 129 }
 130
 131 /*
 132  * Write `count' 1, 2, 4, or 8 byte value `val' to bus space described
 133  * by tag/handle starting at `offset'.
 134  */
 135 static void
 136 generic_bs_sr_1(void *t, bus_space_handle_t bsh,
 137     bus_size_t offset, uint8_t value, size_t count)
 138 {
 139
 140         for (; count != 0; count--, offset++)
 141                 generic_bs_w_1(t, bsh, offset, value);
 142 }
 143
 144 static void
 145 generic_bs_sr_2(void *t, bus_space_handle_t bsh,
 146                        bus_size_t offset, uint16_t value, size_t count)
 147 {
 148
 149         for (; count != 0; count--, offset += 2)
 150                 generic_bs_w_2(t, bsh, offset, value);
 151 }
 152
 153 static void
 154 generic_bs_sr_4(void *t, bus_space_handle_t bsh,
 155     bus_size_t offset, uint32_t value, size_t count)
 156 {
 157
 158         for (; count != 0; count--, offset += 4)
 159                 generic_bs_w_4(t, bsh, offset, value);
 160 }
 161
 162 static void
 163 generic_bs_sr_8(void *t, bus_space_handle_t bsh, bus_size_t offset,
 164     uint64_t value, size_t count)
 165 {
 166
 167         for (; count != 0; count--, offset += 8)
 168                 generic_bs_w_8(t, bsh, offset, value);
 169 }
 170
 171 struct bus_space memmap_bus = {
 172         /* cookie */
 173         .bs_cookie = NULL,
 174
 175         /* mapping/unmapping */
 176         .bs_map = generic_bs_map,
 177         .bs_unmap = generic_bs_unmap,
 178         .bs_subregion = generic_bs_subregion,
 179
 180         /* allocation/deallocation */
 181         .bs_alloc = NULL,
 182         .bs_free = NULL,
 183
 184         /* barrier */
 185         .bs_barrier = generic_bs_barrier,
 186
 187         /* read single */
 188         .bs_r_1 = generic_bs_r_1,
 189         .bs_r_2 = generic_bs_r_2,
 190         .bs_r_4 = generic_bs_r_4,
 191         .bs_r_8 = generic_bs_r_8,
 192
 193         /* read multiple */
 194         .bs_rm_1 = generic_bs_rm_1,
 195         .bs_rm_2 = generic_bs_rm_2,
 196         .bs_rm_4 = generic_bs_rm_4,
 197         .bs_rm_8 = generic_bs_rm_8,
 198
 199         /* read region */
 200         .bs_rr_1 = generic_bs_rr_1,
 201         .bs_rr_2 = generic_bs_rr_2,
 202         .bs_rr_4 = generic_bs_rr_4,
 203         .bs_rr_8 = generic_bs_rr_8,
 204
 205         /* write single */
 206         .bs_w_1 = generic_bs_w_1,
 207         .bs_w_2 = generic_bs_w_2,
 208         .bs_w_4 = generic_bs_w_4,
 209         .bs_w_8 = generic_bs_w_8,
 210
 211         /* write multiple */
 212         .bs_wm_1 = generic_bs_wm_1,
 213         .bs_wm_2 = generic_bs_wm_2,
 214         .bs_wm_4 = generic_bs_wm_4,
 215         .bs_wm_8 = generic_bs_wm_8,
 216
 217         /* write region */
 218         .bs_wr_1 = generic_bs_wr_1,
 219         .bs_wr_2 = generic_bs_wr_2,
 220         .bs_wr_4 = generic_bs_wr_4,
 221         .bs_wr_8 = generic_bs_wr_8,
 222
 223         /* set multiple */
 224         .bs_sm_1 = NULL,
 225         .bs_sm_2 = NULL,
 226         .bs_sm_4 = NULL,
 227         .bs_sm_8 = NULL,
 228
 229         /* set region */
 230         .bs_sr_1 =      generic_bs_sr_1,
 231         .bs_sr_2 =      generic_bs_sr_2,
 232         .bs_sr_4 =      generic_bs_sr_4,
 233         .bs_sr_8 =      generic_bs_sr_8,
 234
 235         /* copy */
 236         .bs_c_1 = NULL,
 237         .bs_c_2 = NULL,
 238         .bs_c_4 = NULL,
 239         .bs_c_8 = NULL,
 240
 241         /* read single stream */
 242         .bs_r_1_s = NULL,
 243         .bs_r_2_s = NULL,
 244         .bs_r_4_s = NULL,
 245         .bs_r_8_s = NULL,
 246
 247         /* read multiple stream */
 248         .bs_rm_1_s = generic_bs_rm_1,
 249         .bs_rm_2_s = generic_bs_rm_2,
 250         .bs_rm_4_s = generic_bs_rm_4,
 251         .bs_rm_8_s = generic_bs_rm_8,
 252
 253         /* read region stream */
 254         .bs_rr_1_s = NULL,
 255         .bs_rr_2_s = NULL,
 256         .bs_rr_4_s = NULL,
 257         .bs_rr_8_s = NULL,
 258
 259         /* write single stream */
 260         .bs_w_1_s = NULL,
 261         .bs_w_2_s = NULL,
 262         .bs_w_4_s = NULL,
 263         .bs_w_8_s = NULL,
 264
 265         /* write multiple stream */
 266         .bs_wm_1_s = generic_bs_wm_1,
 267         .bs_wm_2_s = generic_bs_wm_2,
 268         .bs_wm_4_s = generic_bs_wm_4,
 269         .bs_wm_8_s = generic_bs_wm_8,
 270
 271         /* write region stream */
 272         .bs_wr_1_s = NULL,
 273         .bs_wr_2_s = NULL,
 274         .bs_wr_4_s = NULL,
 275         .bs_wr_8_s = NULL,
 276
 277         /* peek */
 278         .bs_peek_1 = generic_bs_peek_1,
 279         .bs_peek_2 = generic_bs_peek_2,
 280         .bs_peek_4 = generic_bs_peek_4,
 281         .bs_peek_8 = generic_bs_peek_8,
 282
 283         /* poke */
 284         .bs_poke_1 = generic_bs_poke_1,
 285         .bs_poke_2 = generic_bs_poke_2,
 286         .bs_poke_4 = generic_bs_poke_4,
 287         .bs_poke_8 = generic_bs_poke_8,
 288 };
 289
 290 #ifdef FDT
 291 bus_space_tag_t fdtbus_bs_tag = &memmap_bus;
 292 #endif