bus_machdep.c revision 281494
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#include "opt_platform.h" 29 30#include <sys/param.h> 31__FBSDID("$FreeBSD: head/sys/arm64/arm64/bus_machdep.c 281494 2015-04-13 14:43:10Z andrew $"); 32 33#include <vm/vm.h> 34#include <vm/pmap.h> 35 36#include <machine/bus.h> 37 38uint8_t generic_bs_r_1(void *, bus_space_handle_t, bus_size_t); 39uint16_t generic_bs_r_2(void *, bus_space_handle_t, bus_size_t); 40uint32_t generic_bs_r_4(void *, bus_space_handle_t, bus_size_t); 41uint64_t generic_bs_r_8(void *, bus_space_handle_t, bus_size_t); 42 43void generic_bs_rm_1(void *, bus_space_handle_t, bus_size_t, uint8_t *, 44 bus_size_t); 45void generic_bs_rm_2(void *, bus_space_handle_t, bus_size_t, uint16_t *, 46 bus_size_t); 47void generic_bs_rm_4(void *, bus_space_handle_t, bus_size_t, uint32_t *, 48 bus_size_t); 49void generic_bs_rm_8(void *, bus_space_handle_t, bus_size_t, uint64_t *, 50 bus_size_t); 51 52void generic_bs_w_1(void *, bus_space_handle_t, bus_size_t, uint8_t); 53void generic_bs_w_2(void *, bus_space_handle_t, bus_size_t, uint16_t); 54void generic_bs_w_4(void *, bus_space_handle_t, bus_size_t, uint32_t); 55void generic_bs_w_8(void *, bus_space_handle_t, bus_size_t, uint64_t); 56 57void generic_bs_wm_1(void *, bus_space_handle_t, bus_size_t, const uint8_t *, 58 bus_size_t); 59void generic_bs_wm_2(void *, bus_space_handle_t, bus_size_t, const uint16_t *, 60 bus_size_t); 61void generic_bs_wm_4(void *, bus_space_handle_t, bus_size_t, const uint32_t *, 62 bus_size_t); 63void generic_bs_wm_8(void *, bus_space_handle_t, bus_size_t, const uint64_t *, 64 bus_size_t); 65 66static int 67generic_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 68 bus_space_handle_t *bshp) 69{ 70 void *va; 71 72 va = pmap_mapdev(bpa, size); 73 if (va == NULL) 74 return (ENOMEM); 75 *bshp = (bus_space_handle_t)va; 76 return (0); 77} 78 79static void 80generic_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 81{ 82 83 pmap_unmapdev(bsh, size); 84} 85 86static void 87generic_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 88 bus_size_t size, int flags) 89{ 90} 91 92static int 93generic_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 94 bus_size_t size, bus_space_handle_t *nbshp) 95{ 96 97 *nbshp = bsh + offset; 98 return (0); 99} 100 101struct bus_space memmap_bus = { 102 /* cookie */ 103 .bs_cookie = NULL, 104 105 /* mapping/unmapping */ 106 .bs_map = generic_bs_map, 107 .bs_unmap = generic_bs_unmap, 108 .bs_subregion = generic_bs_subregion, 109 110 /* allocation/deallocation */ 111 .bs_alloc = NULL, 112 .bs_free = NULL, 113 114 /* barrier */ 115 .bs_barrier = generic_bs_barrier, 116 117 /* read single */ 118 .bs_r_1 = generic_bs_r_1, 119 .bs_r_2 = generic_bs_r_2, 120 .bs_r_4 = generic_bs_r_4, 121 .bs_r_8 = generic_bs_r_8, 122 123 /* read multiple */ 124 .bs_rm_1 = generic_bs_rm_1, 125 .bs_rm_2 = generic_bs_rm_2, 126 .bs_rm_4 = generic_bs_rm_4, 127 .bs_rm_8 = generic_bs_rm_8, 128 129 /* write single */ 130 .bs_w_1 = generic_bs_w_1, 131 .bs_w_2 = generic_bs_w_2, 132 .bs_w_4 = generic_bs_w_4, 133 .bs_w_8 = generic_bs_w_8, 134 135 /* write multiple */ 136 .bs_wm_1 = generic_bs_wm_1, 137 .bs_wm_2 = generic_bs_wm_2, 138 .bs_wm_4 = generic_bs_wm_4, 139 .bs_wm_8 = generic_bs_wm_8, 140 141 /* write region */ 142 .bs_wr_1 = NULL, 143 .bs_wr_2 = NULL, 144 .bs_wr_4 = NULL, 145 .bs_wr_8 = NULL, 146 147 /* set multiple */ 148 .bs_sm_1 = NULL, 149 .bs_sm_2 = NULL, 150 .bs_sm_4 = NULL, 151 .bs_sm_8 = NULL, 152 153 /* set region */ 154 .bs_sr_1 = NULL, 155 .bs_sr_2 = NULL, 156 .bs_sr_4 = NULL, 157 .bs_sr_8 = NULL, 158 159 /* copy */ 160 .bs_c_1 = NULL, 161 .bs_c_2 = NULL, 162 .bs_c_4 = NULL, 163 .bs_c_8 = NULL, 164 165 /* read single stream */ 166 .bs_r_1_s = NULL, 167 .bs_r_2_s = NULL, 168 .bs_r_4_s = NULL, 169 .bs_r_8_s = NULL, 170 171 /* read multiple stream */ 172 .bs_rm_1_s = NULL, 173 .bs_rm_2_s = NULL, 174 .bs_rm_4_s = NULL, 175 .bs_rm_8_s = NULL, 176 177 /* read region stream */ 178 .bs_rr_1_s = NULL, 179 .bs_rr_2_s = NULL, 180 .bs_rr_4_s = NULL, 181 .bs_rr_8_s = NULL, 182 183 /* write single stream */ 184 .bs_w_1_s = NULL, 185 .bs_w_2_s = NULL, 186 .bs_w_4_s = NULL, 187 .bs_w_8_s = NULL, 188 189 /* write multiple stream */ 190 .bs_wm_1_s = NULL, 191 .bs_wm_2_s = NULL, 192 .bs_wm_4_s = NULL, 193 .bs_wm_8_s = NULL, 194 195 /* write region stream */ 196 .bs_wr_1_s = NULL, 197 .bs_wr_2_s = NULL, 198 .bs_wr_4_s = NULL, 199 .bs_wr_8_s = NULL, 200}; 201 202#ifdef FDT 203bus_space_tag_t fdtbus_bs_tag = &memmap_bus; 204#endif 205