i80321_space.c revision 1.8
1 /* $NetBSD: i80321_space.c,v 1.8 2005/04/01 11:59:25 yamt 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 i80321 I/O Processor. 40 */ 41 42 #include <sys/cdefs.h> 43 __KERNEL_RCSID(0, "$NetBSD: i80321_space.c,v 1.8 2005/04/01 11:59:25 yamt 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/i80321reg.h> 53 #include <arm/xscale/i80321var.h> 54 55 /* Prototypes for all the bus_space structure functions */ 56 bs_protos(i80321); 57 bs_protos(i80321_io); 58 bs_protos(i80321_mem); 59 bs_protos(generic); 60 bs_protos(generic_armv4); 61 bs_protos(bs_notimpl); 62 63 /* 64 * Template bus_space -- copied, and the bits that are NULL are 65 * filled in. 66 */ 67 const struct bus_space i80321_bs_tag_template = { 68 /* cookie */ 69 (void *) 0, 70 71 /* mapping/unmapping */ 72 NULL, 73 NULL, 74 i80321_bs_subregion, 75 76 /* allocation/deallocation */ 77 NULL, 78 NULL, 79 80 /* get kernel virtual address */ 81 i80321_bs_vaddr, 82 83 /* mmap */ 84 i80321_bs_mmap, 85 86 /* barrier */ 87 i80321_bs_barrier, 88 89 /* read (single) */ 90 generic_bs_r_1, 91 generic_armv4_bs_r_2, 92 generic_bs_r_4, 93 bs_notimpl_bs_r_8, 94 95 /* read multiple */ 96 generic_bs_rm_1, 97 generic_armv4_bs_rm_2, 98 generic_bs_rm_4, 99 bs_notimpl_bs_rm_8, 100 101 /* read region */ 102 generic_bs_rr_1, 103 generic_armv4_bs_rr_2, 104 generic_bs_rr_4, 105 bs_notimpl_bs_rr_8, 106 107 /* write (single) */ 108 generic_bs_w_1, 109 generic_armv4_bs_w_2, 110 generic_bs_w_4, 111 bs_notimpl_bs_w_8, 112 113 /* write multiple */ 114 generic_bs_wm_1, 115 generic_armv4_bs_wm_2, 116 generic_bs_wm_4, 117 bs_notimpl_bs_wm_8, 118 119 /* write region */ 120 generic_bs_wr_1, 121 generic_armv4_bs_wr_2, 122 generic_bs_wr_4, 123 bs_notimpl_bs_wr_8, 124 125 /* set multiple */ 126 bs_notimpl_bs_sm_1, 127 bs_notimpl_bs_sm_2, 128 bs_notimpl_bs_sm_4, 129 bs_notimpl_bs_sm_8, 130 131 /* set region */ 132 bs_notimpl_bs_sr_1, 133 generic_armv4_bs_sr_2, 134 generic_bs_sr_4, 135 bs_notimpl_bs_sr_8, 136 137 /* copy */ 138 bs_notimpl_bs_c_1, 139 generic_armv4_bs_c_2, 140 bs_notimpl_bs_c_4, 141 bs_notimpl_bs_c_8, 142 }; 143 144 void 145 i80321_bs_init(bus_space_tag_t bs, void *cookie) 146 { 147 148 *bs = i80321_bs_tag_template; 149 bs->bs_cookie = cookie; 150 } 151 152 void 153 i80321_io_bs_init(bus_space_tag_t bs, void *cookie) 154 { 155 156 *bs = i80321_bs_tag_template; 157 bs->bs_cookie = cookie; 158 159 bs->bs_map = i80321_io_bs_map; 160 bs->bs_unmap = i80321_io_bs_unmap; 161 bs->bs_alloc = i80321_io_bs_alloc; 162 bs->bs_free = i80321_io_bs_free; 163 164 bs->bs_vaddr = i80321_io_bs_vaddr; 165 } 166 167 void 168 i80321_mem_bs_init(bus_space_tag_t bs, void *cookie) 169 { 170 171 *bs = i80321_bs_tag_template; 172 bs->bs_cookie = cookie; 173 174 bs->bs_map = i80321_mem_bs_map; 175 bs->bs_unmap = i80321_mem_bs_unmap; 176 bs->bs_alloc = i80321_mem_bs_alloc; 177 bs->bs_free = i80321_mem_bs_free; 178 179 bs->bs_mmap = i80321_mem_bs_mmap; 180 } 181 182 /* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */ 183 184 int 185 i80321_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 186 bus_size_t size, bus_space_handle_t *nbshp) 187 { 188 189 *nbshp = bsh + offset; 190 return (0); 191 } 192 193 void 194 i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 195 bus_size_t len, int flags) 196 { 197 198 /* Nothing to do. */ 199 } 200 201 void * 202 i80321_bs_vaddr(void *t, bus_space_handle_t bsh) 203 { 204 205 return ((void *)bsh); 206 } 207 208 paddr_t 209 i80321_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 210 { 211 212 /* Not supported. */ 213 return (-1); 214 } 215 216 /* *** Routines for PCI IO. *** */ 217 218 int 219 i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 220 bus_space_handle_t *bshp) 221 { 222 struct i80321_softc *sc = t; 223 vaddr_t winvaddr; 224 uint32_t busbase; 225 226 if (bpa >= sc->sc_ioout_xlate && 227 bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) { 228 busbase = sc->sc_ioout_xlate; 229 winvaddr = sc->sc_iow_vaddr; 230 } else 231 return (EINVAL); 232 233 if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE)) 234 return (EINVAL); 235 236 /* 237 * Found the window -- PCI I/O space is mapped at a fixed 238 * virtual address by board-specific code. Translate the 239 * bus address to the virtual address. 240 */ 241 *bshp = winvaddr + (bpa - busbase); 242 243 return (0); 244 } 245 246 void 247 i80321_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 248 { 249 250 /* Nothing to do. */ 251 } 252 253 int 254 i80321_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 255 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 256 bus_addr_t *bpap, bus_space_handle_t *bshp) 257 { 258 259 panic("i80321_io_bs_alloc(): not implemented"); 260 } 261 262 void 263 i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 264 { 265 266 panic("i80321_io_bs_free(): not implemented"); 267 } 268 269 void * 270 i80321_io_bs_vaddr(void *t, bus_space_handle_t bsh) 271 { 272 273 /* Not supported. */ 274 return (NULL); 275 } 276 277 /* *** Routines for PCI MEM. *** */ 278 279 int 280 i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 281 bus_space_handle_t *bshp) 282 { 283 284 struct i80321_softc *sc = t; 285 vaddr_t va; 286 uint32_t busbase; 287 paddr_t pa, endpa, physbase; 288 289 if (bpa >= sc->sc_owin[0].owin_xlate_lo && 290 bpa < (sc->sc_owin[0].owin_xlate_lo + 291 VERDE_OUT_XLATE_MEM_WIN_SIZE)) { 292 busbase = sc->sc_owin[0].owin_xlate_lo; 293 physbase = sc->sc_iwin[1].iwin_xlate; 294 } else 295 return (EINVAL); 296 297 if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_MEM_WIN_SIZE)) 298 return (EINVAL); 299 300 /* 301 * Found the window -- PCI MEM space is not mapped by allocating 302 * some kernel VA space and mapping the pages with pmap_enter(). 303 * pmap_enter() will map unmanaged pages as non-cacheable. 304 */ 305 pa = trunc_page((bpa - busbase) + physbase); 306 endpa = round_page(((bpa - busbase) + physbase) + size); 307 308 va = uvm_km_alloc(kernel_map, endpa - pa, 0, UVM_KMF_VAONLY); 309 if (va == 0) 310 return (ENOMEM); 311 312 *bshp = va + (bpa & PAGE_MASK); 313 314 for (; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 315 pmap_enter(pmap_kernel(), va, pa, 316 VM_PROT_READ | VM_PROT_WRITE, 317 VM_PROT_READ | VM_PROT_WRITE | PMAP_WIRED); 318 } 319 pmap_update(pmap_kernel()); 320 321 return (0); 322 } 323 324 void 325 i80321_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 326 { 327 vaddr_t va, endva; 328 329 va = trunc_page(bsh); 330 endva = round_page(bsh + size); 331 332 pmap_remove(pmap_kernel(), va, endva - va); 333 pmap_update(pmap_kernel()); 334 335 /* Free the kernel virtual mapping. */ 336 uvm_km_free(kernel_map, va, endva - va, UVM_KMF_VAONLY); 337 } 338 339 int 340 i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 341 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 342 bus_addr_t *bpap, bus_space_handle_t *bshp) 343 { 344 345 panic("i80321_mem_bs_alloc(): not implemented"); 346 } 347 348 void 349 i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 350 { 351 352 panic("i80321_mem_bs_free(): not implemented"); 353 } 354 355 paddr_t 356 i80321_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 357 { 358 359 /* XXX */ 360 return (-1); 361 } 362
Indexes created Fri Sep 26 08:10:20 GMT 2025