1 /* $NetBSD: becc_space.c,v 1.4 2005/12/11 12:16:51 christos 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/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: becc_space.c,v 1.4 2005/12/11 12:16:51 christos Exp $"); 44 45 #include <sys/param.h> 46 #include <sys/systm.h> 47 48 #include <uvm/uvm_extern.h> 49 50 #include <machine/bus.h> 51 52 #include <arm/xscale/beccreg.h> 53 #include <arm/xscale/beccvar.h> 54 55 /* Prototypes for all the bus_space structure functions */ 56 bs_protos(becc); 57 bs_protos(becc_io); 58 bs_protos(becc_mem); 59 bs_protos(becc_pci); 60 bs_protos(bs_notimpl); 61 62 /* 63 * Template bus_space -- copied, and the bits that are NULL are 64 * filled in. 65 */ 66 const struct bus_space becc_bs_tag_template = { 67 /* cookie */ 68 (void *) 0, 69 70 /* mapping/unmapping */ 71 NULL, 72 NULL, 73 becc_bs_subregion, 74 75 /* allocation/deallocation */ 76 NULL, 77 NULL, 78 79 /* get kernel virtual address */ 80 becc_bs_vaddr, 81 82 /* mmap */ 83 becc_bs_mmap, 84 85 /* barrier */ 86 becc_bs_barrier, 87 88 /* read (single) */ 89 becc_pci_bs_r_1, 90 becc_pci_bs_r_2, 91 becc_pci_bs_r_4, 92 bs_notimpl_bs_r_8, 93 94 /* read multiple */ 95 bs_notimpl_bs_rm_1, 96 bs_notimpl_bs_rm_2, 97 bs_notimpl_bs_rm_4, 98 bs_notimpl_bs_rm_8, 99 100 /* read region */ 101 bs_notimpl_bs_rr_1, 102 bs_notimpl_bs_rr_2, 103 bs_notimpl_bs_rr_4, 104 bs_notimpl_bs_rr_8, 105 106 /* write (single) */ 107 becc_pci_bs_w_1, 108 becc_pci_bs_w_2, 109 becc_pci_bs_w_4, 110 bs_notimpl_bs_w_8, 111 112 /* write multiple */ 113 bs_notimpl_bs_wm_1, 114 bs_notimpl_bs_wm_2, 115 bs_notimpl_bs_wm_4, 116 bs_notimpl_bs_wm_8, 117 118 /* write region */ 119 bs_notimpl_bs_wr_1, 120 bs_notimpl_bs_wr_2, 121 bs_notimpl_bs_wr_4, 122 bs_notimpl_bs_wr_8, 123 124 /* set multiple */ 125 bs_notimpl_bs_sm_1, 126 bs_notimpl_bs_sm_2, 127 bs_notimpl_bs_sm_4, 128 bs_notimpl_bs_sm_8, 129 130 /* set region */ 131 bs_notimpl_bs_sr_1, 132 bs_notimpl_bs_sr_2, 133 bs_notimpl_bs_sr_4, 134 bs_notimpl_bs_sr_8, 135 136 /* copy */ 137 bs_notimpl_bs_c_1, 138 bs_notimpl_bs_c_2, 139 bs_notimpl_bs_c_4, 140 bs_notimpl_bs_c_8, 141 }; 142 143 void 144 becc_io_bs_init(bus_space_tag_t bs, void *cookie) 145 { 146 147 *bs = becc_bs_tag_template; 148 bs->bs_cookie = cookie; 149 150 bs->bs_map = becc_io_bs_map; 151 bs->bs_unmap = becc_io_bs_unmap; 152 bs->bs_alloc = becc_io_bs_alloc; 153 bs->bs_free = becc_io_bs_free; 154 155 bs->bs_vaddr = becc_io_bs_vaddr; 156 } 157 158 void 159 becc_mem_bs_init(bus_space_tag_t bs, void *cookie) 160 { 161 162 *bs = becc_bs_tag_template; 163 bs->bs_cookie = cookie; 164 165 bs->bs_map = becc_mem_bs_map; 166 bs->bs_unmap = becc_mem_bs_unmap; 167 bs->bs_alloc = becc_mem_bs_alloc; 168 bs->bs_free = becc_mem_bs_free; 169 170 bs->bs_mmap = becc_mem_bs_mmap; 171 } 172 173 /* *** Routines shared by becc, PCI IO, and PCI MEM. *** */ 174 175 int 176 becc_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 177 bus_size_t size, bus_space_handle_t *nbshp) 178 { 179 180 *nbshp = bsh + offset; 181 return (0); 182 } 183 184 void 185 becc_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 186 bus_size_t len, int flags) 187 { 188 189 /* Nothing to do. */ 190 } 191 192 void * 193 becc_bs_vaddr(void *t, bus_space_handle_t bsh) 194 { 195 196 return ((void *)bsh); 197 } 198 199 paddr_t 200 becc_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 201 { 202 203 /* Not supported. */ 204 return (-1); 205 } 206 207 /* *** Routines for PCI IO. *** */ 208 209 int 210 becc_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 211 bus_space_handle_t *bshp) 212 { 213 struct becc_softc *sc = t; 214 vaddr_t winvaddr; 215 uint32_t busbase; 216 217 if (bpa >= sc->sc_ioout_xlate && 218 bpa < (sc->sc_ioout_xlate + (64 * 1024))) { 219 busbase = sc->sc_ioout_xlate; 220 winvaddr = sc->sc_pci_io_base; 221 } else 222 return (EINVAL); 223 224 if ((bpa + size) >= (busbase + (64 * 1024))) 225 return (EINVAL); 226 227 /* 228 * Found the window -- PCI I/O space is mapped at a fixed 229 * virtual address by board-specific code. Translate the 230 * bus address to the virtual address. 231 */ 232 *bshp = winvaddr + (bpa - busbase); 233 234 return (0); 235 } 236 237 void 238 becc_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 239 { 240 241 /* Nothing to do. */ 242 } 243 244 int 245 becc_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 246 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 247 bus_addr_t *bpap, bus_space_handle_t *bshp) 248 { 249 250 panic("becc_io_bs_alloc(): not implemented\n"); 251 } 252 253 void 254 becc_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 255 { 256 257 panic("becc_io_bs_free(): not implemented\n"); 258 } 259 260 void * 261 becc_io_bs_vaddr(void *t, bus_space_handle_t bsh) 262 { 263 264 /* Not supported. */ 265 return (NULL); 266 } 267 268 /* *** Routines for PCI MEM. *** */ 269 270 int 271 becc_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 272 bus_space_handle_t *bshp) 273 { 274 275 struct becc_softc *sc = t; 276 vaddr_t winvaddr; 277 uint32_t busbase; 278 279 /* 280 * The two memory windows have been configured to the same 281 * PCI base by board-specific code, so we only need to look 282 * at the first one. 283 */ 284 285 if (bpa >= sc->sc_owin_xlate[0] && 286 bpa < (sc->sc_owin_xlate[0] + BECC_PCI_MEM1_SIZE)) { 287 busbase = sc->sc_owin_xlate[0]; 288 winvaddr = sc->sc_pci_mem_base[0]; 289 } else 290 return (EINVAL); 291 292 if ((bpa + size) >= (busbase + BECC_PCI_MEM1_SIZE)) 293 return (EINVAL); 294 295 /* 296 * Found the window -- PCI MEM space is mapped at a fixed 297 * virtual address by board-specific code. Translate the 298 * bus address to the virtual address. 299 */ 300 *bshp = winvaddr + (bpa - busbase); 301 302 return (0); 303 } 304 305 void 306 becc_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 307 { 308 309 /* Nothing to do. */ 310 } 311 312 int 313 becc_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 314 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 315 bus_addr_t *bpap, bus_space_handle_t *bshp) 316 { 317 318 panic("becc_mem_bs_alloc(): not implemented\n"); 319 } 320 321 void 322 becc_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 323 { 324 325 panic("becc_mem_bs_free(): not implemented\n"); 326 } 327 328 paddr_t 329 becc_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 330 { 331 332 /* XXX */ 333 return (-1); 334 } 335