1/* $NetBSD: s3c2xx0_space.c,v 1.7 2005/11/24 13:08:32 yamt Exp $ */ 2 3/* 4 * Copyright (c) 2002 Fujitsu Component Limited 5 * Copyright (c) 2002 Genetec Corporation 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. Neither the name of The Fujitsu Component Limited nor the name of 17 * Genetec corporation may not be used to endorse or promote products 18 * derived from this software without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY FUJITSU COMPONENT LIMITED AND GENETEC 21 * CORPORATION ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 22 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 23 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 24 * DISCLAIMED. IN NO EVENT SHALL FUJITSU COMPONENT LIMITED OR GENETEC 25 * CORPORATION BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 26 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 27 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF 28 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 29 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32 * SUCH DAMAGE. 33 */ 34/* derived from sa11x0_io.c */ 35 36/* 37 * Copyright (c) 1997 Mark Brinicombe. 38 * Copyright (c) 1997 Causality Limited. 39 * All rights reserved. 40 * 41 * This code is derived from software contributed to The NetBSD Foundation 42 * by Ichiro FUKUHARA. 43 * 44 * Redistribution and use in source and binary forms, with or without 45 * modification, are permitted provided that the following conditions 46 * are met: 47 * 1. Redistributions of source code must retain the above copyright 48 * notice, this list of conditions and the following disclaimer. 49 * 2. Redistributions in binary form must reproduce the above copyright 50 * notice, this list of conditions and the following disclaimer in the 51 * documentation and/or other materials provided with the distribution. 52 * 3. All advertising materials mentioning features or use of this software 53 * must display the following acknowledgement: 54 * This product includes software developed by Mark Brinicombe. 55 * 4. The name of the company nor the name of the author may be used to 56 * endorse or promote products derived from this software without specific 57 * prior written permission. 58 * 59 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 60 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 61 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 62 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 63 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 64 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 65 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 66 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 67 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 68 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 69 * SUCH DAMAGE. 70 */ 71 72/* 73 * bus_space functions for Samsung S3C2800/2400/2410. 74 */ 75 76#include <sys/cdefs.h> 77__FBSDID("$FreeBSD$"); 78 79#include <sys/param.h> 80#include <sys/systm.h> 81#include <sys/bus.h> 82 83#include <vm/vm.h> 84#include <vm/vm_kern.h> 85#include <vm/pmap.h> 86#include <vm/vm_page.h> 87#include <vm/vm_extern.h> 88 89#include <machine/bus.h> 90 91/* Prototypes for all the bus_space structure functions */ 92bs_protos(s3c2xx0); 93bs_protos(generic); 94bs_protos(generic_armv4); 95 96struct bus_space s3c2xx0_bs_tag = { 97 /* cookie */ 98 (void *) 0, 99 100 /* mapping/unmapping */ 101 s3c2xx0_bs_map, 102 s3c2xx0_bs_unmap, 103 s3c2xx0_bs_subregion, 104 105 /* allocation/deallocation */ 106 s3c2xx0_bs_alloc, /* not implemented */ 107 s3c2xx0_bs_free, /* not implemented */ 108 109 /* barrier */ 110 s3c2xx0_bs_barrier, 111 112 /* read (single) */ 113 generic_bs_r_1, 114 generic_armv4_bs_r_2, 115 generic_bs_r_4, 116 NULL, 117 118 /* read multiple */ 119 generic_bs_rm_1, 120 generic_armv4_bs_rm_2, 121 generic_bs_rm_4, 122 NULL, 123 124 /* read region */ 125 generic_bs_rr_1, 126 generic_armv4_bs_rr_2, 127 generic_bs_rr_4, 128 NULL, 129 130 /* write (single) */ 131 generic_bs_w_1, 132 generic_armv4_bs_w_2, 133 generic_bs_w_4, 134 NULL, 135 136 /* write multiple */ 137 generic_bs_wm_1, 138 generic_armv4_bs_wm_2, 139 generic_bs_wm_4, 140 NULL, 141 142 /* write region */ 143 generic_bs_wr_1, 144 generic_armv4_bs_wr_2, 145 generic_bs_wr_4, 146 NULL, 147 148 /* set multiple */ 149 NULL, 150 NULL, 151 NULL, 152 NULL, 153 154 /* set region */ 155 generic_bs_sr_1, 156 generic_armv4_bs_sr_2, 157 NULL, 158 NULL, 159 160 /* copy */ 161 NULL, 162 generic_armv4_bs_c_2, 163 NULL, 164 NULL, 165}; 166 167int 168s3c2xx0_bs_map(void *t, bus_addr_t bpa, bus_size_t size, 169 int flag, bus_space_handle_t * bshp) 170{ 171 u_long startpa, endpa, pa; 172 vm_offset_t va; 173 pt_entry_t *pte; 174 const struct pmap_devmap *pd; 175 176 if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) { 177 /* Device was statically mapped. */ 178 *bshp = pd->pd_va + (bpa - pd->pd_pa); 179 return 0; 180 } 181 182 startpa = trunc_page(bpa); 183 endpa = round_page(bpa + size); 184 185 va = kva_alloc(endpa - startpa); 186 if (!va) 187 return (ENOMEM); 188 189 *bshp = (bus_space_handle_t) (va + (bpa - startpa)); 190 191 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 192 pmap_kenter(va, pa); 193 pte = vtopte(va); 194 if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) 195 *pte &= ~L2_S_CACHE_MASK; 196 } 197 return (0); 198} 199 200void 201s3c2xx0_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) 202{ 203 vm_offset_t va, endva, origva; 204 205 if (pmap_devmap_find_va((vm_offset_t)h, size) != NULL) { 206 /* Device was statically mapped; nothing to do. */ 207 return; 208 } 209 210 endva = round_page((vm_offset_t)h + size); 211 origva = va = trunc_page((vm_offset_t)h); 212 213 while (va < endva) { 214 pmap_kremove(va); 215 va += PAGE_SIZE; 216 } 217 kva_free(origva, endva - origva); 218} 219 220int 221s3c2xx0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 222 bus_size_t size, bus_space_handle_t * nbshp) 223{ 224 225 *nbshp = bsh + offset; 226 return (0); 227} 228 229void 230s3c2xx0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 231 bus_size_t len, int flags) 232{ 233 234 /* Nothing to do. */ 235} 236 237int 238s3c2xx0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 239 bus_size_t size, bus_size_t alignment, bus_size_t boundary, 240 int flags, bus_addr_t * bpap, bus_space_handle_t * bshp) 241{ 242 243 panic("s3c2xx0_io_bs_alloc(): not implemented\n"); 244} 245 246void 247s3c2xx0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 248{ 249 panic("s3c2xx0_io_bs_free(): not implemented\n"); 250} 251