s3c2xx0_space.c revision 1.4
1 /* $NetBSD: s3c2xx0_space.c,v 1.4 2005/03/16 05:02:12 bsh 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 __KERNEL_RCSID(0, "$NetBSD: s3c2xx0_space.c,v 1.4 2005/03/16 05:02:12 bsh Exp $"); 78 79 #include <sys/param.h> 80 #include <sys/systm.h> 81 82 #include <uvm/uvm_extern.h> 83 84 #include <machine/bus.h> 85 86 /* Prototypes for all the bus_space structure functions */ 87 bs_protos(s3c2xx0); 88 bs_protos(generic); 89 bs_protos(generic_armv4); 90 bs_protos(bs_notimpl); 91 92 struct bus_space s3c2xx0_bs_tag = { 93 /* cookie */ 94 (void *) 0, 95 96 /* mapping/unmapping */ 97 s3c2xx0_bs_map, 98 s3c2xx0_bs_unmap, 99 s3c2xx0_bs_subregion, 100 101 /* allocation/deallocation */ 102 s3c2xx0_bs_alloc, /* not implemented */ 103 s3c2xx0_bs_free, /* not implemented */ 104 105 /* get kernel virtual address */ 106 s3c2xx0_bs_vaddr, 107 108 /* mmap */ 109 bs_notimpl_bs_mmap, 110 111 /* barrier */ 112 s3c2xx0_bs_barrier, 113 114 /* read (single) */ 115 generic_bs_r_1, 116 generic_armv4_bs_r_2, 117 generic_bs_r_4, 118 bs_notimpl_bs_r_8, 119 120 /* read multiple */ 121 generic_bs_rm_1, 122 generic_armv4_bs_rm_2, 123 generic_bs_rm_4, 124 bs_notimpl_bs_rm_8, 125 126 /* read region */ 127 generic_bs_rr_1, 128 generic_armv4_bs_rr_2, 129 generic_bs_rr_4, 130 bs_notimpl_bs_rr_8, 131 132 /* write (single) */ 133 generic_bs_w_1, 134 generic_armv4_bs_w_2, 135 generic_bs_w_4, 136 bs_notimpl_bs_w_8, 137 138 /* write multiple */ 139 generic_bs_wm_1, 140 generic_armv4_bs_wm_2, 141 generic_bs_wm_4, 142 bs_notimpl_bs_wm_8, 143 144 /* write region */ 145 generic_bs_wr_1, 146 generic_armv4_bs_wr_2, 147 generic_bs_wr_4, 148 bs_notimpl_bs_wr_8, 149 150 /* set multiple */ 151 bs_notimpl_bs_sm_1, 152 bs_notimpl_bs_sm_2, 153 bs_notimpl_bs_sm_4, 154 bs_notimpl_bs_sm_8, 155 156 /* set region */ 157 generic_bs_sr_1, 158 generic_armv4_bs_sr_2, 159 bs_notimpl_bs_sr_4, 160 bs_notimpl_bs_sr_8, 161 162 /* copy */ 163 bs_notimpl_bs_c_1, 164 generic_armv4_bs_c_2, 165 bs_notimpl_bs_c_4, 166 bs_notimpl_bs_c_8, 167 }; 168 169 int 170 s3c2xx0_bs_map(void *t, bus_addr_t bpa, bus_size_t size, 171 int flag, bus_space_handle_t * bshp) 172 { 173 u_long startpa, endpa, pa; 174 vaddr_t va; 175 pt_entry_t *pte; 176 const struct pmap_devmap *pd; 177 178 if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) { 179 /* Device was statically mapped. */ 180 *bshp = pd->pd_va + (bpa - pd->pd_pa); 181 return 0; 182 } 183 startpa = trunc_page(bpa); 184 endpa = round_page(bpa + size); 185 186 /* XXX use extent manager to check duplicate mapping */ 187 188 va = uvm_km_valloc(kernel_map, endpa - startpa); 189 if (!va) 190 return (ENOMEM); 191 192 *bshp = (bus_space_handle_t) (va + (bpa - startpa)); 193 194 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 195 pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE); 196 pte = vtopte(va); 197 if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) 198 *pte &= ~L2_S_CACHE_MASK; 199 } 200 pmap_update(pmap_kernel()); 201 202 return (0); 203 } 204 205 void 206 s3c2xx0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 207 { 208 vaddr_t va; 209 vaddr_t endva; 210 211 if (pmap_devmap_find_va(bsh, size) != NULL) { 212 /* Device was statically mapped; nothing to do. */ 213 return; 214 } 215 216 endva = round_page(bsh + size); 217 va = trunc_page(bsh); 218 219 uvm_km_free(kernel_map, va, endva - va); 220 } 221 222 223 int 224 s3c2xx0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 225 bus_size_t size, bus_space_handle_t * nbshp) 226 { 227 228 *nbshp = bsh + offset; 229 return (0); 230 } 231 232 void 233 s3c2xx0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 234 bus_size_t len, int flags) 235 { 236 237 /* Nothing to do. */ 238 } 239 240 void * 241 s3c2xx0_bs_vaddr(void *t, bus_space_handle_t bsh) 242 { 243 244 return ((void *) bsh); 245 } 246 247 248 int 249 s3c2xx0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 250 bus_size_t size, bus_size_t alignment, bus_size_t boundary, 251 int flags, bus_addr_t * bpap, bus_space_handle_t * bshp) 252 { 253 254 panic("s3c2xx0_io_bs_alloc(): not implemented\n"); 255 } 256 257 void 258 s3c2xx0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 259 { 260 261 panic("s3c2xx0_io_bs_free(): not implemented\n"); 262 } 263
Indexes created Wed Oct 01 13:09:50 GMT 2025