s3c2xx0_space.c revision 1.1
1 /* $NetBSD: s3c2xx0_space.c,v 1.1 2002/11/20 17:52:51 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/param.h> 77 #include <sys/systm.h> 78 79 #include <uvm/uvm_extern.h> 80 81 #include <machine/bus.h> 82 83 /* Prototypes for all the bus_space structure functions */ 84 bs_protos(s3c2xx0); 85 bs_protos(generic); 86 bs_protos(generic_armv4); 87 bs_protos(bs_notimpl); 88 89 struct bus_space s3c2xx0_bs_tag = { 90 /* cookie */ 91 (void *) 0, 92 93 /* mapping/unmapping */ 94 s3c2xx0_bs_map, 95 s3c2xx0_bs_unmap, 96 s3c2xx0_bs_subregion, 97 98 /* allocation/deallocation */ 99 s3c2xx0_bs_alloc, /* not implemented */ 100 s3c2xx0_bs_free, /* not implemented */ 101 102 /* get kernel virtual address */ 103 s3c2xx0_bs_vaddr, 104 105 /* mmap */ 106 bs_notimpl_bs_mmap, 107 108 /* barrier */ 109 s3c2xx0_bs_barrier, 110 111 /* read (single) */ 112 generic_bs_r_1, 113 generic_armv4_bs_r_2, 114 generic_bs_r_4, 115 bs_notimpl_bs_r_8, 116 117 /* read multiple */ 118 generic_bs_rm_1, 119 generic_armv4_bs_rm_2, 120 generic_bs_rm_4, 121 bs_notimpl_bs_rm_8, 122 123 /* read region */ 124 bs_notimpl_bs_rr_1, 125 generic_armv4_bs_rr_2, 126 generic_bs_rr_4, 127 bs_notimpl_bs_rr_8, 128 129 /* write (single) */ 130 generic_bs_w_1, 131 generic_armv4_bs_w_2, 132 generic_bs_w_4, 133 bs_notimpl_bs_w_8, 134 135 /* write multiple */ 136 generic_bs_wm_1, 137 generic_armv4_bs_wm_2, 138 generic_bs_wm_4, 139 bs_notimpl_bs_wm_8, 140 141 /* write region */ 142 bs_notimpl_bs_wr_1, 143 generic_armv4_bs_wr_2, 144 generic_bs_wr_4, 145 bs_notimpl_bs_wr_8, 146 147 /* set multiple */ 148 bs_notimpl_bs_sm_1, 149 bs_notimpl_bs_sm_2, 150 bs_notimpl_bs_sm_4, 151 bs_notimpl_bs_sm_8, 152 153 /* set region */ 154 bs_notimpl_bs_sr_1, 155 generic_armv4_bs_sr_2, 156 bs_notimpl_bs_sr_4, 157 bs_notimpl_bs_sr_8, 158 159 /* copy */ 160 bs_notimpl_bs_c_1, 161 generic_armv4_bs_c_2, 162 bs_notimpl_bs_c_4, 163 bs_notimpl_bs_c_8, 164 }; 165 166 int 167 s3c2xx0_bs_map(void *t, bus_addr_t bpa, bus_size_t size, 168 int flag, bus_space_handle_t * bshp) 169 { 170 u_long startpa, endpa, pa; 171 vaddr_t va; 172 pt_entry_t *pte; 173 174 if ((u_long) bpa > (u_long) KERNEL_BASE) { 175 /* Some IO registers (ex. UART ports for console) are mapped 176 * to fixed address by board specific routine. */ 177 *bshp = bpa; 178 return (0); 179 } 180 startpa = trunc_page(bpa); 181 endpa = round_page(bpa + size); 182 183 /* XXX use extent manager to check duplicate mapping */ 184 185 va = uvm_km_valloc(kernel_map, 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_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE); 193 pte = vtopte(va); 194 if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) 195 *pte &= ~L2_S_CACHE_MASK; 196 } 197 pmap_update(pmap_kernel()); 198 199 return (0); 200 } 201 202 void 203 s3c2xx0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 204 { 205 206 /* Nothing to do. */ 207 } 208 209 210 int 211 s3c2xx0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 212 bus_size_t size, bus_space_handle_t * nbshp) 213 { 214 215 *nbshp = bsh + offset; 216 return (0); 217 } 218 219 void 220 s3c2xx0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 221 bus_size_t len, int flags) 222 { 223 224 /* Nothing to do. */ 225 } 226 227 void * 228 s3c2xx0_bs_vaddr(void *t, bus_space_handle_t bsh) 229 { 230 231 return ((void *) bsh); 232 } 233 234 235 int 236 s3c2xx0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 237 bus_size_t size, bus_size_t alignment, bus_size_t boundary, 238 int flags, bus_addr_t * bpap, bus_space_handle_t * bshp) 239 { 240 241 panic("s3c2xx0_io_bs_alloc(): not implemented\n"); 242 } 243 244 void 245 s3c2xx0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 246 { 247 248 panic("s3c2xx0_io_bs_free(): not implemented\n"); 249 } 250
Indexes created Thu Oct 02 01:09:59 GMT 2025