becc_space.c revision 1.2
1 /* $NetBSD: becc_space.c,v 1.2 2003/05/30 18:38:02 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(becc_pci); 57 bs_protos(bs_notimpl); 58 59 /* 60 * Template bus_space -- copied, and the bits that are NULL are 61 * filled in. 62 */ 63 const struct bus_space becc_bs_tag_template = { 64 /* cookie */ 65 (void *) 0, 66 67 /* mapping/unmapping */ 68 NULL, 69 NULL, 70 becc_bs_subregion, 71 72 /* allocation/deallocation */ 73 NULL, 74 NULL, 75 76 /* get kernel virtual address */ 77 becc_bs_vaddr, 78 79 /* mmap */ 80 becc_bs_mmap, 81 82 /* barrier */ 83 becc_bs_barrier, 84 85 /* read (single) */ 86 becc_pci_bs_r_1, 87 becc_pci_bs_r_2, 88 becc_pci_bs_r_4, 89 bs_notimpl_bs_r_8, 90 91 /* read multiple */ 92 bs_notimpl_bs_rm_1, 93 bs_notimpl_bs_rm_2, 94 bs_notimpl_bs_rm_4, 95 bs_notimpl_bs_rm_8, 96 97 /* read region */ 98 bs_notimpl_bs_rr_1, 99 bs_notimpl_bs_rr_2, 100 bs_notimpl_bs_rr_4, 101 bs_notimpl_bs_rr_8, 102 103 /* write (single) */ 104 becc_pci_bs_w_1, 105 becc_pci_bs_w_2, 106 becc_pci_bs_w_4, 107 bs_notimpl_bs_w_8, 108 109 /* write multiple */ 110 bs_notimpl_bs_wm_1, 111 bs_notimpl_bs_wm_2, 112 bs_notimpl_bs_wm_4, 113 bs_notimpl_bs_wm_8, 114 115 /* write region */ 116 bs_notimpl_bs_wr_1, 117 bs_notimpl_bs_wr_2, 118 bs_notimpl_bs_wr_4, 119 bs_notimpl_bs_wr_8, 120 121 /* set multiple */ 122 bs_notimpl_bs_sm_1, 123 bs_notimpl_bs_sm_2, 124 bs_notimpl_bs_sm_4, 125 bs_notimpl_bs_sm_8, 126 127 /* set region */ 128 bs_notimpl_bs_sr_1, 129 bs_notimpl_bs_sr_2, 130 bs_notimpl_bs_sr_4, 131 bs_notimpl_bs_sr_8, 132 133 /* copy */ 134 bs_notimpl_bs_c_1, 135 bs_notimpl_bs_c_2, 136 bs_notimpl_bs_c_4, 137 bs_notimpl_bs_c_8, 138 }; 139 140 void 141 becc_io_bs_init(bus_space_tag_t bs, void *cookie) 142 { 143 144 *bs = becc_bs_tag_template; 145 bs->bs_cookie = cookie; 146 147 bs->bs_map = becc_io_bs_map; 148 bs->bs_unmap = becc_io_bs_unmap; 149 bs->bs_alloc = becc_io_bs_alloc; 150 bs->bs_free = becc_io_bs_free; 151 152 bs->bs_vaddr = becc_io_bs_vaddr; 153 } 154 155 void 156 becc_mem_bs_init(bus_space_tag_t bs, void *cookie) 157 { 158 159 *bs = becc_bs_tag_template; 160 bs->bs_cookie = cookie; 161 162 bs->bs_map = becc_mem_bs_map; 163 bs->bs_unmap = becc_mem_bs_unmap; 164 bs->bs_alloc = becc_mem_bs_alloc; 165 bs->bs_free = becc_mem_bs_free; 166 167 bs->bs_mmap = becc_mem_bs_mmap; 168 } 169 170 /* *** Routines shared by becc, PCI IO, and PCI MEM. *** */ 171 172 int 173 becc_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 174 bus_size_t size, bus_space_handle_t *nbshp) 175 { 176 177 *nbshp = bsh + offset; 178 return (0); 179 } 180 181 void 182 becc_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 183 bus_size_t len, int flags) 184 { 185 186 /* Nothing to do. */ 187 } 188 189 void * 190 becc_bs_vaddr(void *t, bus_space_handle_t bsh) 191 { 192 193 return ((void *)bsh); 194 } 195 196 paddr_t 197 becc_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 198 { 199 200 /* Not supported. */ 201 return (-1); 202 } 203 204 /* *** Routines for PCI IO. *** */ 205 206 int 207 becc_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 208 bus_space_handle_t *bshp) 209 { 210 struct becc_softc *sc = t; 211 vaddr_t winvaddr; 212 uint32_t busbase; 213 214 if (bpa >= sc->sc_ioout_xlate && 215 bpa < (sc->sc_ioout_xlate + (64 * 1024))) { 216 busbase = sc->sc_ioout_xlate; 217 winvaddr = sc->sc_pci_io_base; 218 } else 219 return (EINVAL); 220 221 if ((bpa + size) >= (busbase + (64 * 1024))) 222 return (EINVAL); 223 224 /* 225 * Found the window -- PCI I/O space is mapped at a fixed 226 * virtual address by board-specific code. Translate the 227 * bus address to the virtual address. 228 */ 229 *bshp = winvaddr + (bpa - busbase); 230 231 return (0); 232 } 233 234 void 235 becc_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 236 { 237 238 /* Nothing to do. */ 239 } 240 241 int 242 becc_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 243 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 244 bus_addr_t *bpap, bus_space_handle_t *bshp) 245 { 246 247 panic("becc_io_bs_alloc(): not implemented\n"); 248 } 249 250 void 251 becc_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 252 { 253 254 panic("becc_io_bs_free(): not implemented\n"); 255 } 256 257 void * 258 becc_io_bs_vaddr(void *t, bus_space_handle_t bsh) 259 { 260 261 /* Not supported. */ 262 return (NULL); 263 } 264 265 /* *** Routines for PCI MEM. *** */ 266 267 int 268 becc_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 269 bus_space_handle_t *bshp) 270 { 271 272 struct becc_softc *sc = t; 273 vaddr_t winvaddr; 274 uint32_t busbase; 275 276 /* 277 * The two memory windows have been configured to the same 278 * PCI base by board-specific code, so we only need to look 279 * at the first one. 280 */ 281 282 if (bpa >= sc->sc_owin_xlate[0] && 283 bpa < (sc->sc_owin_xlate[0] + BECC_PCI_MEM1_SIZE)) { 284 busbase = sc->sc_owin_xlate[0]; 285 winvaddr = sc->sc_pci_mem_base[0]; 286 } else 287 return (EINVAL); 288 289 if ((bpa + size) >= (busbase + BECC_PCI_MEM1_SIZE)) 290 return (EINVAL); 291 292 /* 293 * Found the window -- PCI MEM space is mapped at a fixed 294 * virtual address by board-specific code. Translate the 295 * bus address to the virtual address. 296 */ 297 *bshp = winvaddr + (bpa - busbase); 298 299 return (0); 300 } 301 302 void 303 becc_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 304 { 305 306 /* Nothing to do. */ 307 } 308 309 int 310 becc_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 311 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 312 bus_addr_t *bpap, bus_space_handle_t *bshp) 313 { 314 315 panic("becc_mem_bs_alloc(): not implemented\n"); 316 } 317 318 void 319 becc_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 320 { 321 322 panic("becc_mem_bs_free(): not implemented\n"); 323 } 324 325 paddr_t 326 becc_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 327 { 328 329 /* XXX */ 330 return (-1); 331 } 332
Indexes created Fri Sep 26 20:09:58 GMT 2025