i80321_space.c revision 254025
1/* $NetBSD: i80321_space.c,v 1.6 2003/10/06 15:43:35 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 i80321 I/O Processor. 40 */ 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD: head/sys/arm/xscale/i80321/i80321_space.c 254025 2013-08-07 06:21:20Z jeff $"); 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/bus.h> 48 49#include <machine/pcb.h> 50 51#include <vm/vm.h> 52#include <vm/vm_kern.h> 53#include <vm/pmap.h> 54#include <vm/vm_page.h> 55#include <vm/vm_extern.h> 56 57#include <machine/bus.h> 58 59#include <arm/xscale/i80321/i80321reg.h> 60#include <arm/xscale/i80321/i80321var.h> 61 62/* Prototypes for all the bus_space structure functions */ 63bs_protos(i80321); 64bs_protos(i80321_io); 65bs_protos(i80321_mem); 66bs_protos(generic); 67bs_protos(generic_armv4); 68 69/* 70 * Template bus_space -- copied, and the bits that are NULL are 71 * filled in. 72 */ 73const struct bus_space i80321_bs_tag_template = { 74 /* cookie */ 75 (void *) 0, 76 77 /* mapping/unmapping */ 78 NULL, 79 NULL, 80 i80321_bs_subregion, 81 82 /* allocation/deallocation */ 83 NULL, 84 NULL, 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 NULL, 94 95 /* read multiple */ 96 generic_bs_rm_1, 97 generic_armv4_bs_rm_2, 98 generic_bs_rm_4, 99 NULL, 100 101 /* read region */ 102 generic_bs_rr_1, 103 generic_armv4_bs_rr_2, 104 generic_bs_rr_4, 105 NULL, 106 107 /* write (single) */ 108 generic_bs_w_1, 109 generic_armv4_bs_w_2, 110 generic_bs_w_4, 111 NULL, 112 113 /* write multiple */ 114 generic_bs_wm_1, 115 generic_armv4_bs_wm_2, 116 generic_bs_wm_4, 117 NULL, 118 119 /* write region */ 120 NULL, 121 generic_armv4_bs_wr_2, 122 generic_bs_wr_4, 123 NULL, 124 125 /* set multiple */ 126 NULL, 127 NULL, 128 NULL, 129 NULL, 130 131 /* set region */ 132 NULL, 133 generic_armv4_bs_sr_2, 134 generic_bs_sr_4, 135 NULL, 136 137 /* copy */ 138 NULL, 139 generic_armv4_bs_c_2, 140 NULL, 141 NULL, 142 143 /* read (single) stream */ 144 generic_bs_r_1, 145 generic_armv4_bs_r_2, 146 generic_bs_r_4, 147 NULL, 148 149 /* read multiple stream */ 150 generic_bs_rm_1, 151 generic_armv4_bs_rm_2, 152 generic_bs_rm_4, 153 NULL, 154 155 /* read region stream */ 156 generic_bs_rr_1, 157 generic_armv4_bs_rr_2, 158 generic_bs_rr_4, 159 NULL, 160 161 /* write (single) stream */ 162 generic_bs_w_1, 163 generic_armv4_bs_w_2, 164 generic_bs_w_4, 165 NULL, 166 167 /* write multiple stream */ 168 generic_bs_wm_1, 169 generic_armv4_bs_wm_2, 170 generic_bs_wm_4, 171 NULL, 172 173 /* write region stream */ 174 NULL, 175 generic_armv4_bs_wr_2, 176 generic_bs_wr_4, 177 NULL, 178}; 179 180void 181i80321_bs_init(bus_space_tag_t bs, void *cookie) 182{ 183 184 *bs = i80321_bs_tag_template; 185 bs->bs_cookie = cookie; 186} 187 188void 189i80321_io_bs_init(bus_space_tag_t bs, void *cookie) 190{ 191 192 *bs = i80321_bs_tag_template; 193 bs->bs_cookie = cookie; 194 195 bs->bs_map = i80321_io_bs_map; 196 bs->bs_unmap = i80321_io_bs_unmap; 197 bs->bs_alloc = i80321_io_bs_alloc; 198 bs->bs_free = i80321_io_bs_free; 199 200} 201 202void 203i80321_mem_bs_init(bus_space_tag_t bs, void *cookie) 204{ 205 206 *bs = i80321_bs_tag_template; 207 bs->bs_cookie = cookie; 208 209 bs->bs_map = i80321_mem_bs_map; 210 bs->bs_unmap = i80321_mem_bs_unmap; 211 bs->bs_alloc = i80321_mem_bs_alloc; 212 bs->bs_free = i80321_mem_bs_free; 213 214} 215 216/* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */ 217 218int 219i80321_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 220 bus_size_t size, bus_space_handle_t *nbshp) 221{ 222 223 *nbshp = bsh + offset; 224 return (0); 225} 226 227void 228i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 229 bus_size_t len, int flags) 230{ 231 232 /* Nothing to do. */ 233} 234 235/* *** Routines for PCI IO. *** */ 236 237extern struct i80321_softc *i80321_softc; 238int 239i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 240 bus_space_handle_t *bshp) 241{ 242 struct i80321_softc *sc = i80321_softc; 243 vm_offset_t winvaddr; 244 uint32_t busbase; 245 246 if (bpa >= sc->sc_ioout_xlate && 247 bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) { 248 busbase = sc->sc_ioout_xlate; 249 winvaddr = sc->sc_iow_vaddr; 250 } else 251 return (EINVAL); 252 253 if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE)) 254 return (EINVAL); 255 256 /* 257 * Found the window -- PCI I/O space is mapped at a fixed 258 * virtual address by board-specific code. Translate the 259 * bus address to the virtual address. 260 */ 261 *bshp = winvaddr + (bpa - busbase); 262 263 return (0); 264} 265 266void 267i80321_io_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) 268{ 269 270 /* Nothing to do. */ 271} 272 273int 274i80321_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 275 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 276 bus_addr_t *bpap, bus_space_handle_t *bshp) 277{ 278 279 panic("i80321_io_bs_alloc(): not implemented"); 280} 281 282void 283i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 284{ 285 286 panic("i80321_io_bs_free(): not implemented"); 287} 288 289 290/* *** Routines for PCI MEM. *** */ 291extern int badaddr_read(void *, int, void *); 292int 293i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 294 bus_space_handle_t *bshp) 295{ 296 vm_paddr_t pa, endpa; 297 298 pa = trunc_page(bpa); 299 endpa = round_page(bpa + size); 300 301 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa); 302 303 return (0); 304} 305 306void 307i80321_mem_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) 308{ 309 vm_offset_t va, endva; 310 311 va = trunc_page((vm_offset_t)t); 312 endva = va + round_page(size); 313 314 /* Free the kernel virtual mapping. */ 315 kva_free(va, endva - va); 316} 317 318int 319i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 320 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 321 bus_addr_t *bpap, bus_space_handle_t *bshp) 322{ 323 324 panic("i80321_mem_bs_alloc(): not implemented"); 325} 326 327void 328i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 329{ 330 331 panic("i80321_mem_bs_free(): not implemented"); 332} 333