1 /* $NetBSD: iomd_io.c,v 1.7 2018/03/16 17:56:31 ryo Exp $ */ 2 3 /* 4 * Copyright (c) 1997 Mark Brinicombe. 5 * Copyright (c) 1997 Causality Limited. 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. All advertising materials mentioning features or use of this software 17 * must display the following acknowledgement: 18 * This product includes software developed by Mark Brinicombe. 19 * 4. The name of the company nor the name of the author may be used to 20 * endorse or promote products derived from this software without specific 21 * prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 24 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 25 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 26 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 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, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 /* 37 * bus_space I/O functions for iomd 38 */ 39 40 #include <sys/cdefs.h> 41 __KERNEL_RCSID(0, "$NetBSD: iomd_io.c,v 1.7 2018/03/16 17:56:31 ryo Exp $"); 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/bus.h> 46 47 /* Proto types for all the bus_space structure functions */ 48 49 bs_protos(iomd); 50 bs_protos(bs_notimpl); 51 52 /* Declare the iomd bus space tag */ 53 54 struct bus_space iomd_bs_tag = { 55 /* cookie */ 56 .bs_cookie = NULL, 57 58 /* mapping/unmapping */ 59 .bs_map = iomd_bs_map, 60 .bs_unmap = iomd_bs_unmap, 61 .bs_subregion = iomd_bs_subregion, 62 63 /* allocation/deallocation */ 64 .bs_alloc = iomd_bs_alloc, 65 .bs_free = iomd_bs_free, 66 67 /* get kernel virtual address */ 68 .bs_vaddr = 0, /* there is no linear mapping */ 69 70 /* mmap bus space for userland */ 71 .bs_mmap = bs_notimpl_bs_mmap, /* XXX correct? XXX */ 72 73 /* barrier */ 74 .bs_barrier = iomd_bs_barrier, 75 76 /* read (single) */ 77 .bs_r_1 = iomd_bs_r_1, 78 .bs_r_2 = iomd_bs_r_2, 79 .bs_r_4 = iomd_bs_r_4, 80 .bs_r_8 = bs_notimpl_bs_r_8, 81 82 /* read multiple */ 83 .bs_rm_1 = bs_notimpl_bs_rm_1, 84 .bs_rm_2 = iomd_bs_rm_2, 85 .bs_rm_4 = bs_notimpl_bs_rm_4, 86 .bs_rm_8 = bs_notimpl_bs_rm_8, 87 88 /* read region */ 89 .bs_rr_1 = bs_notimpl_bs_rr_1, 90 .bs_rr_2 = bs_notimpl_bs_rr_2, 91 .bs_rr_4 = bs_notimpl_bs_rr_4, 92 .bs_rr_8 = bs_notimpl_bs_rr_8, 93 94 /* write (single) */ 95 .bs_w_1 = iomd_bs_w_1, 96 .bs_w_2 = iomd_bs_w_2, 97 .bs_w_4 = iomd_bs_w_4, 98 .bs_w_8 = bs_notimpl_bs_w_8, 99 100 /* write multiple */ 101 .bs_wm_1 = bs_notimpl_bs_wm_1, 102 .bs_wm_2 = iomd_bs_wm_2, 103 .bs_wm_4 = bs_notimpl_bs_wm_4, 104 .bs_wm_8 = bs_notimpl_bs_wm_8, 105 106 /* write region */ 107 .bs_wr_1 = bs_notimpl_bs_wr_1, 108 .bs_wr_2 = bs_notimpl_bs_wr_2, 109 .bs_wr_4 = bs_notimpl_bs_wr_4, 110 .bs_wr_8 = bs_notimpl_bs_wr_8, 111 112 /* set multiple */ 113 .bs_sm_1 = bs_notimpl_bs_sm_1, 114 .bs_sm_2 = bs_notimpl_bs_sm_2, 115 .bs_sm_4 = bs_notimpl_bs_sm_4, 116 .bs_sm_8 = bs_notimpl_bs_sm_8, 117 118 /* set region */ 119 .bs_sr_1 = bs_notimpl_bs_sr_1, 120 .bs_sr_2 = bs_notimpl_bs_sr_2, 121 .bs_sr_4 = bs_notimpl_bs_sr_4, 122 .bs_sr_8 = bs_notimpl_bs_sr_8, 123 124 /* copy */ 125 .bs_c_1 = bs_notimpl_bs_c_1, 126 .bs_c_2 = bs_notimpl_bs_c_2, 127 .bs_c_4 = bs_notimpl_bs_c_4, 128 .bs_c_8 = bs_notimpl_bs_c_8, 129 }; 130 131 /* bus space functions */ 132 133 int 134 iomd_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int cacheable, 135 bus_space_handle_t *bshp) 136 { 137 138 /* 139 * Temporary implementation as all I/O is already mapped etc. 140 * 141 * Eventually this function will do the mapping check for multiple maps 142 */ 143 *bshp = bpa; 144 return 0; 145 } 146 147 int 148 iomd_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, bus_size_t size, 149 bus_size_t alignment, bus_size_t boundary, int cacheable, bus_addr_t *bpap, 150 bus_space_handle_t *bshp) 151 { 152 153 panic("iomd_alloc(): Help!"); 154 } 155 156 157 void 158 iomd_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 159 { 160 161 /* 162 * Temporary implementation 163 */ 164 } 165 166 void 167 iomd_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 168 { 169 170 panic("iomd_free(): Help!"); 171 /* iomd_unmap() does all that we need to do. */ 172 /* iomd_unmap(t, bsh, size);*/ 173 } 174 175 int 176 iomd_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 177 bus_size_t size, bus_space_handle_t *nbshp) 178 { 179 180 *nbshp = bsh + (offset << 2); 181 return 0; 182 } 183 184 void 185 iomd_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 186 bus_size_t len, int flags) 187 { 188 189 } 190 191 /* End of iomd_io.c */ 192
Indexes created Sat Sep 20 22:09:52 GMT 2025