i80312_space.c revision 1.3
1 /* $NetBSD: i80312_space.c,v 1.3 2002/04/12 19:02:30 thorpej Exp $ */ 2 3 /* 4 * Copyright (c) 2001 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 i80312 Companion I/O 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/i80312reg.h> 50 #include <arm/xscale/i80312var.h> 51 52 /* Prototypes for all the bus_space structure functions */ 53 bs_protos(i80312); 54 bs_protos(i80312_io); 55 bs_protos(i80312_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 i80312_bs_tag_template = { 65 /* cookie */ 66 (void *) 0, 67 68 /* mapping/unmapping */ 69 NULL, 70 NULL, 71 i80312_bs_subregion, 72 73 /* allocation/deallocation */ 74 NULL, 75 NULL, 76 77 /* get kernel virtual address */ 78 i80312_bs_vaddr, 79 80 /* mmap */ 81 i80312_bs_mmap, 82 83 /* barrier */ 84 i80312_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 i80312_bs_init(bus_space_tag_t bs, void *cookie) 143 { 144 145 *bs = i80312_bs_tag_template; 146 bs->bs_cookie = cookie; 147 } 148 149 void 150 i80312_io_bs_init(bus_space_tag_t bs, void *cookie) 151 { 152 153 *bs = i80312_bs_tag_template; 154 bs->bs_cookie = cookie; 155 156 bs->bs_map = i80312_io_bs_map; 157 bs->bs_unmap = i80312_io_bs_unmap; 158 bs->bs_alloc = i80312_io_bs_alloc; 159 bs->bs_free = i80312_io_bs_free; 160 161 bs->bs_vaddr = i80312_io_bs_vaddr; 162 } 163 164 void 165 i80312_mem_bs_init(bus_space_tag_t bs, void *cookie) 166 { 167 168 *bs = i80312_bs_tag_template; 169 bs->bs_cookie = cookie; 170 171 bs->bs_map = i80312_mem_bs_map; 172 bs->bs_unmap = i80312_mem_bs_unmap; 173 bs->bs_alloc = i80312_mem_bs_alloc; 174 bs->bs_free = i80312_mem_bs_free; 175 176 bs->bs_mmap = i80312_mem_bs_mmap; 177 } 178 179 /* *** Routines shared by i80312, PCI IO, and PCI MEM. *** */ 180 181 int 182 i80312_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 183 bus_size_t size, bus_space_handle_t *nbshp) 184 { 185 186 *nbshp = bsh + offset; 187 return (0); 188 } 189 190 void 191 i80312_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 192 bus_size_t len, int flags) 193 { 194 195 /* Nothing to do. */ 196 } 197 198 void * 199 i80312_bs_vaddr(void *t, bus_space_handle_t bsh) 200 { 201 202 return ((void *)bsh); 203 } 204 205 paddr_t 206 i80312_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 207 { 208 209 /* Not supported. */ 210 return (-1); 211 } 212 213 /* *** Routines for PCI IO. *** */ 214 215 int 216 i80312_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 217 bus_space_handle_t *bshp) 218 { 219 struct i80312_softc *sc = t; 220 vaddr_t winvaddr; 221 uint32_t busbase, bussize; 222 223 if (bpa >= sc->sc_pioout_base && 224 bpa < (sc->sc_pioout_base + sc->sc_pioout_size)) { 225 busbase = sc->sc_pioout_base; 226 bussize = sc->sc_pioout_size; 227 winvaddr = sc->sc_piow_vaddr; 228 } else if (bpa >= sc->sc_sioout_base && 229 bpa < (sc->sc_sioout_base + sc->sc_sioout_size)) { 230 busbase = sc->sc_sioout_base; 231 bussize = sc->sc_sioout_size; 232 winvaddr = sc->sc_siow_vaddr; 233 } else 234 return (EINVAL); 235 236 if ((bpa + size) >= (busbase + bussize)) 237 return (EINVAL); 238 239 /* 240 * Found the window -- PCI I/O space is mapped at a fixed 241 * virtual address by board-specific code. Translate the 242 * bus address to the virtual address. 243 */ 244 *bshp = winvaddr + (bpa - busbase); 245 246 return (0); 247 } 248 249 void 250 i80312_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 251 { 252 253 /* Nothing to do. */ 254 } 255 256 int 257 i80312_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 258 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 259 bus_addr_t *bpap, bus_space_handle_t *bshp) 260 { 261 262 panic("i80312_io_bs_alloc(): not implemented\n"); 263 } 264 265 void 266 i80312_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 267 { 268 269 panic("i80312_io_bs_free(): not implemented\n"); 270 } 271 272 void * 273 i80312_io_bs_vaddr(void *t, bus_space_handle_t bsh) 274 { 275 276 /* Not supported. */ 277 return (NULL); 278 } 279 280 /* *** Routines for PCI MEM. *** */ 281 282 int 283 i80312_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 284 bus_space_handle_t *bshp) 285 { 286 287 struct i80312_softc *sc = t; 288 vaddr_t va; 289 uint32_t busbase, bussize; 290 paddr_t pa, endpa, physbase; 291 292 if (bpa >= sc->sc_pmemout_base && 293 bpa < (sc->sc_pmemout_base + sc->sc_pmemout_size)) { 294 busbase = sc->sc_pmemout_base; 295 bussize = sc->sc_pmemout_size; 296 physbase = I80312_PCI_XLATE_PMW_BASE; 297 } else if (bpa >= sc->sc_smemout_base && 298 bpa < (sc->sc_smemout_base + sc->sc_smemout_size)) { 299 busbase = sc->sc_smemout_base; 300 bussize = sc->sc_smemout_size; 301 physbase = I80312_PCI_XLATE_SMW_BASE; 302 } else 303 return (EINVAL); 304 305 if ((bpa + size) >= (busbase + bussize)) 306 return (EINVAL); 307 308 /* 309 * Found the window -- PCI MEM space is not mapped by allocating 310 * some kernel VA space and mapping the pages with pmap_enter(). 311 * pmap_enter() will map unmanaged pages as non-cacheable. 312 */ 313 pa = trunc_page((bpa - busbase) + physbase); 314 endpa = round_page(((bpa - busbase) + physbase) + size); 315 316 va = uvm_km_valloc(kernel_map, endpa - pa); 317 if (va == 0) 318 return (ENOMEM); 319 320 *bshp = va + (bpa & PAGE_MASK); 321 322 for (; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 323 pmap_enter(pmap_kernel(), va, pa, 324 VM_PROT_READ | VM_PROT_WRITE, PMAP_WIRED); 325 } 326 pmap_update(pmap_kernel()); 327 328 return (0); 329 } 330 331 void 332 i80312_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 333 { 334 vaddr_t va, endva; 335 336 va = trunc_page(bsh); 337 endva = round_page(bsh + size); 338 339 /* Free the kernel virtual mapping. */ 340 uvm_km_free(kernel_map, va, endva - va); 341 } 342 343 int 344 i80312_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 345 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 346 bus_addr_t *bpap, bus_space_handle_t *bshp) 347 { 348 349 panic("i80312_mem_bs_alloc(): not implemented\n"); 350 } 351 352 void 353 i80312_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 354 { 355 356 panic("i80312_mem_bs_free(): not implemented\n"); 357 } 358 359 paddr_t 360 i80312_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 361 { 362 363 /* XXX */ 364 return (-1); 365 } 366
Indexes created Fri Sep 26 20:09:58 GMT 2025