1 /* $NetBSD: i80321_space.c,v 1.4 2002/09/27 15:35:51 provos 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/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/i80321reg.h> 50 #include <arm/xscale/i80321var.h> 51 52 /* Prototypes for all the bus_space structure functions */ 53 bs_protos(i80321); 54 bs_protos(i80321_io); 55 bs_protos(i80321_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 i80321_bs_tag_template = { 65 /* cookie */ 66 (void *) 0, 67 68 /* mapping/unmapping */ 69 NULL, 70 NULL, 71 i80321_bs_subregion, 72 73 /* allocation/deallocation */ 74 NULL, 75 NULL, 76 77 /* get kernel virtual address */ 78 i80321_bs_vaddr, 79 80 /* mmap */ 81 i80321_bs_mmap, 82 83 /* barrier */ 84 i80321_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 generic_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 i80321_bs_init(bus_space_tag_t bs, void *cookie) 143 { 144 145 *bs = i80321_bs_tag_template; 146 bs->bs_cookie = cookie; 147 } 148 149 void 150 i80321_io_bs_init(bus_space_tag_t bs, void *cookie) 151 { 152 153 *bs = i80321_bs_tag_template; 154 bs->bs_cookie = cookie; 155 156 bs->bs_map = i80321_io_bs_map; 157 bs->bs_unmap = i80321_io_bs_unmap; 158 bs->bs_alloc = i80321_io_bs_alloc; 159 bs->bs_free = i80321_io_bs_free; 160 161 bs->bs_vaddr = i80321_io_bs_vaddr; 162 } 163 164 void 165 i80321_mem_bs_init(bus_space_tag_t bs, void *cookie) 166 { 167 168 *bs = i80321_bs_tag_template; 169 bs->bs_cookie = cookie; 170 171 bs->bs_map = i80321_mem_bs_map; 172 bs->bs_unmap = i80321_mem_bs_unmap; 173 bs->bs_alloc = i80321_mem_bs_alloc; 174 bs->bs_free = i80321_mem_bs_free; 175 176 bs->bs_mmap = i80321_mem_bs_mmap; 177 } 178 179 /* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */ 180 181 int 182 i80321_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 i80321_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 i80321_bs_vaddr(void *t, bus_space_handle_t bsh) 200 { 201 202 return ((void *)bsh); 203 } 204 205 paddr_t 206 i80321_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 i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 217 bus_space_handle_t *bshp) 218 { 219 struct i80321_softc *sc = t; 220 vaddr_t winvaddr; 221 uint32_t busbase; 222 223 if (bpa >= sc->sc_ioout_xlate && 224 bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) { 225 busbase = sc->sc_ioout_xlate; 226 winvaddr = sc->sc_iow_vaddr; 227 } else 228 return (EINVAL); 229 230 if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE)) 231 return (EINVAL); 232 233 /* 234 * Found the window -- PCI I/O space is mapped at a fixed 235 * virtual address by board-specific code. Translate the 236 * bus address to the virtual address. 237 */ 238 *bshp = winvaddr + (bpa - busbase); 239 240 return (0); 241 } 242 243 void 244 i80321_io_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 245 { 246 247 /* Nothing to do. */ 248 } 249 250 int 251 i80321_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 252 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 253 bus_addr_t *bpap, bus_space_handle_t *bshp) 254 { 255 256 panic("i80321_io_bs_alloc(): not implemented"); 257 } 258 259 void 260 i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 261 { 262 263 panic("i80321_io_bs_free(): not implemented"); 264 } 265 266 void * 267 i80321_io_bs_vaddr(void *t, bus_space_handle_t bsh) 268 { 269 270 /* Not supported. */ 271 return (NULL); 272 } 273 274 /* *** Routines for PCI MEM. *** */ 275 276 int 277 i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 278 bus_space_handle_t *bshp) 279 { 280 281 struct i80321_softc *sc = t; 282 vaddr_t va; 283 uint32_t busbase; 284 paddr_t pa, endpa, physbase; 285 286 if (bpa >= sc->sc_owin[0].owin_xlate_lo && 287 bpa < (sc->sc_owin[0].owin_xlate_lo + 288 VERDE_OUT_XLATE_MEM_WIN_SIZE)) { 289 busbase = sc->sc_owin[0].owin_xlate_lo; 290 physbase = sc->sc_iwin[1].iwin_xlate; 291 } else 292 return (EINVAL); 293 294 if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_MEM_WIN_SIZE)) 295 return (EINVAL); 296 297 /* 298 * Found the window -- PCI MEM space is not mapped by allocating 299 * some kernel VA space and mapping the pages with pmap_enter(). 300 * pmap_enter() will map unmanaged pages as non-cacheable. 301 */ 302 pa = trunc_page((bpa - busbase) + physbase); 303 endpa = round_page(((bpa - busbase) + physbase) + size); 304 305 va = uvm_km_valloc(kernel_map, endpa - pa); 306 if (va == 0) 307 return (ENOMEM); 308 309 *bshp = va + (bpa & PAGE_MASK); 310 311 for (; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 312 pmap_enter(pmap_kernel(), va, pa, 313 VM_PROT_READ | VM_PROT_WRITE, PMAP_WIRED); 314 } 315 pmap_update(pmap_kernel()); 316 317 return (0); 318 } 319 320 void 321 i80321_mem_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 322 { 323 vaddr_t va, endva; 324 325 va = trunc_page(bsh); 326 endva = round_page(bsh + size); 327 328 /* Free the kernel virtual mapping. */ 329 uvm_km_free(kernel_map, va, endva - va); 330 } 331 332 int 333 i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 334 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 335 bus_addr_t *bpap, bus_space_handle_t *bshp) 336 { 337 338 panic("i80321_mem_bs_alloc(): not implemented"); 339 } 340 341 void 342 i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 343 { 344 345 panic("i80321_mem_bs_free(): not implemented"); 346 } 347 348 paddr_t 349 i80321_mem_bs_mmap(void *t, bus_addr_t addr, off_t off, int prot, int flags) 350 { 351 352 /* XXX */ 353 return (-1); 354 } 355