becc_space.c revision 1.1
1 /* $NetBSD: becc_space.c,v 1.1 2003/01/25 01:57:19 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 5 * All rights reserved. 6 * 7 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. All advertising materials mentioning features or use of this software 18 * must display the following acknowledgement: 19 * This product includes software developed for the NetBSD Project by 20 * Wasabi Systems, Inc. 21 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 22 * or promote products derived from this software without specific prior 23 * written permission. 24 * 25 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 26 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 35 * POSSIBILITY OF SUCH DAMAGE. 36 */ 37 38 /* 39 * bus_space functions for the ADI Engineering Big Endian Companion Chip. 40 */ 41 42 #include <sys/param.h> 43 #include <sys/systm.h> 44 45 #include <uvm/uvm_extern.h> 46 47 #include <machine/bus.h> 48 49 #include <arm/xscale/beccreg.h> 50 #include <arm/xscale/beccvar.h> 51 52 /* Prototypes for all the bus_space structure functions */ 53 bs_protos(becc); 54 bs_protos(becc_io); 55 bs_protos(becc_mem); 56 bs_protos(generic); 57 bs_protos(generic_armv4); 58 bs_protos(bs_notimpl); 59 60 /* 61 * Template bus_space -- copied, and the bits that are NULL are 62 * filled in. 63 */ 64 const struct bus_space becc_bs_tag_template = { 65 /* cookie */ 66 (void *) 0, 67 68 /* mapping/unmapping */ 69 NULL, 70 NULL, 71 becc_bs_subregion, 72 73 /* allocation/deallocation */ 74 NULL, 75 NULL, 76 77 /* get kernel virtual address */ 78 becc_bs_vaddr, 79 80 /* mmap */ 81 becc_bs_mmap, 82 83 /* barrier */ 84 becc_bs_barrier, 85 86 /* read (single) */ 87 generic_bs_r_1, 88 generic_armv4_bs_r_2, 89 generic_bs_r_4, 90 bs_notimpl_bs_r_8, 91 92 /* read multiple */ 93 generic_bs_rm_1, 94 generic_armv4_bs_rm_2, 95 generic_bs_rm_4, 96 bs_notimpl_bs_rm_8, 97 98 /* read region */ 99 bs_notimpl_bs_rr_1, 100 generic_armv4_bs_rr_2, 101 generic_bs_rr_4, 102 bs_notimpl_bs_rr_8, 103 104 /* write (single) */ 105 generic_bs_w_1, 106 generic_armv4_bs_w_2, 107 generic_bs_w_4, 108 bs_notimpl_bs_w_8, 109 110 /* write multiple */ 111 generic_bs_wm_1, 112 generic_armv4_bs_wm_2, 113 generic_bs_wm_4, 114 bs_notimpl_bs_wm_8, 115 116 /* write region */ 117 bs_notimpl_bs_wr_1, 118 generic_armv4_bs_wr_2, 119 generic_bs_wr_4, 120 bs_notimpl_bs_wr_8, 121 122 /* set multiple */ 123 bs_notimpl_bs_sm_1, 124 bs_notimpl_bs_sm_2, 125 bs_notimpl_bs_sm_4, 126 bs_notimpl_bs_sm_8, 127 128 /* set region */ 129 bs_notimpl_bs_sr_1, 130 generic_armv4_bs_sr_2, 131 bs_notimpl_bs_sr_4, 132 bs_notimpl_bs_sr_8, 133 134 /* copy */ 135 bs_notimpl_bs_c_1, 136 generic_armv4_bs_c_2, 137 bs_notimpl_bs_c_4, 138 bs_notimpl_bs_c_8, 139 }; 140 141 void 142 becc_io_bs_init(bus_space_tag_t bs, void *cookie) 143 { 144 145 *bs = becc_bs_tag_template; 146 bs->bs_cookie = cookie; 147 148 bs->bs_map = becc_io_bs_map; 149 bs->bs_unmap = becc_io_bs_unmap; 150 bs->bs_alloc = becc_io_bs_alloc; 151 bs->bs_free = becc_io_bs_free; 152 153 bs->bs_vaddr = becc_io_bs_vaddr; 154 } 155 156 void 157 becc_mem_bs_init(bus_space_tag_t bs, void *cookie) 158 { 159 160 *bs = becc_bs_tag_template; 161 bs->bs_cookie = cookie; 162 163 bs->bs_map = becc_mem_bs_map; 164 bs->bs_unmap = becc_mem_bs_unmap; 165 bs->bs_alloc = becc_mem_bs_alloc; 166 bs->bs_free = becc_mem_bs_free; 167 168 bs->bs_mmap = becc_mem_bs_mmap; 169 } 170 171 /* *** Routines shared by becc, PCI IO, and PCI MEM. *** */ 172 173 int 174 becc_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 175 bus_size_t size, bus_space_handle_t *nbshp) 176 { 177 178 *nbshp = bsh + offset; 179 return (0); 180 } 181 182 void 183 becc_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 184 bus_size_t len, int flags) 185 { 186 187 /* Nothing to do. */ 188 } 189 190 void * 191 becc_bs_vaddr(void *t, bus_space_handle_t bsh) 192 { 193 194 return ((void *)bsh); 195 } 196 197 paddr_t 198 becc_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 199 { 200 201 /* Not supported. */ 202 return (-1); 203 } 204 205 /* *** Routines for PCI IO. *** */ 206 207 int 208 becc_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 209 bus_space_handle_t *bshp) 210 { 211 struct becc_softc *sc = t; 212 vaddr_t winvaddr; 213 uint32_t busbase; 214 215 if (bpa >= sc->sc_ioout_xlate && 216 bpa < (sc->sc_ioout_xlate + (64 * 1024))) { 217 busbase = sc->sc_ioout_xlate; 218 winvaddr = sc->sc_pci_io_base; 219 } else 220 return (EINVAL); 221 222 if ((bpa + size) >= (busbase + (64 * 1024))) 223 return (EINVAL); 224 225 /* 226 * Found the window -- PCI I/O space is mapped at a fixed 227 * virtual address by board-specific code. Translate the 228 * bus address to the virtual address. 229 */ 230 *bshp = winvaddr + (bpa - busbase); 231 232 return (0); 233 } 234 235 void 236 becc_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 237 { 238 239 /* Nothing to do. */ 240 } 241 242 int 243 becc_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 244 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 245 bus_addr_t *bpap, bus_space_handle_t *bshp) 246 { 247 248 panic("becc_io_bs_alloc(): not implemented\n"); 249 } 250 251 void 252 becc_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 253 { 254 255 panic("becc_io_bs_free(): not implemented\n"); 256 } 257 258 void * 259 becc_io_bs_vaddr(void *t, bus_space_handle_t bsh) 260 { 261 262 /* Not supported. */ 263 return (NULL); 264 } 265 266 /* *** Routines for PCI MEM. *** */ 267 268 int 269 becc_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 270 bus_space_handle_t *bshp) 271 { 272 273 struct becc_softc *sc = t; 274 vaddr_t winvaddr; 275 uint32_t busbase; 276 277 /* 278 * The two memory windows have been configured to the same 279 * PCI base by board-specific code, so we only need to look 280 * at the first one. 281 */ 282 283 if (bpa >= sc->sc_owin_xlate[0] && 284 bpa < (sc->sc_owin_xlate[0] + BECC_PCI_MEM1_SIZE)) { 285 busbase = sc->sc_owin_xlate[0]; 286 winvaddr = sc->sc_pci_mem_base[0]; 287 } else 288 return (EINVAL); 289 290 if ((bpa + size) >= (busbase + BECC_PCI_MEM1_SIZE)) 291 return (EINVAL); 292 293 /* 294 * Found the window -- PCI MEM space is mapped at a fixed 295 * virtual address by board-specific code. Translate the 296 * bus address to the virtual address. 297 */ 298 *bshp = winvaddr + (bpa - busbase); 299 300 return (0); 301 } 302 303 void 304 becc_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 305 { 306 307 /* Nothing to do. */ 308 } 309 310 int 311 becc_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 312 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 313 bus_addr_t *bpap, bus_space_handle_t *bshp) 314 { 315 316 panic("becc_mem_bs_alloc(): not implemented\n"); 317 } 318 319 void 320 becc_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 321 { 322 323 panic("becc_mem_bs_free(): not implemented\n"); 324 } 325 326 paddr_t 327 becc_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 328 { 329 330 /* XXX */ 331 return (-1); 332 } 333
Indexes created Fri Sep 26 08:10:20 GMT 2025