i80321_space.c revision 164440
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 164440 2006-11-20 13:21:02Z kevlo $"); 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 144void 145i80321_bs_init(bus_space_tag_t bs, void *cookie) 146{ 147 148 *bs = i80321_bs_tag_template; 149 bs->bs_cookie = cookie; 150} 151 152void 153i80321_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} 165 166void 167i80321_mem_bs_init(bus_space_tag_t bs, void *cookie) 168{ 169 170 *bs = i80321_bs_tag_template; 171 bs->bs_cookie = cookie; 172 173 bs->bs_map = i80321_mem_bs_map; 174 bs->bs_unmap = i80321_mem_bs_unmap; 175 bs->bs_alloc = i80321_mem_bs_alloc; 176 bs->bs_free = i80321_mem_bs_free; 177 178} 179 180/* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */ 181 182int 183i80321_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 184 bus_size_t size, bus_space_handle_t *nbshp) 185{ 186 187 *nbshp = bsh + offset; 188 return (0); 189} 190 191void 192i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 193 bus_size_t len, int flags) 194{ 195 196 /* Nothing to do. */ 197} 198 199/* *** Routines for PCI IO. *** */ 200 201extern struct i80321_softc *i80321_softc; 202int 203i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 204 bus_space_handle_t *bshp) 205{ 206 struct i80321_softc *sc = i80321_softc; 207 vm_offset_t winvaddr; 208 uint32_t busbase; 209 210 if (bpa >= sc->sc_ioout_xlate && 211 bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) { 212 busbase = sc->sc_ioout_xlate; 213 winvaddr = sc->sc_iow_vaddr; 214 } else 215 return (EINVAL); 216 217 if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE)) 218 return (EINVAL); 219 220 /* 221 * Found the window -- PCI I/O space is mapped at a fixed 222 * virtual address by board-specific code. Translate the 223 * bus address to the virtual address. 224 */ 225 *bshp = winvaddr + (bpa - busbase); 226 227 return (0); 228} 229 230void 231i80321_io_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) 232{ 233 234 /* Nothing to do. */ 235} 236 237int 238i80321_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 239 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 240 bus_addr_t *bpap, bus_space_handle_t *bshp) 241{ 242 243 panic("i80321_io_bs_alloc(): not implemented"); 244} 245 246void 247i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 248{ 249 250 panic("i80321_io_bs_free(): not implemented"); 251} 252 253 254/* *** Routines for PCI MEM. *** */ 255extern int badaddr_read(void *, int, void *); 256int 257i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 258 bus_space_handle_t *bshp) 259{ 260 vm_paddr_t pa, endpa; 261 262 pa = trunc_page(bpa); 263 endpa = round_page(bpa + size); 264 265 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa); 266 267 return (0); 268} 269 270void 271i80321_mem_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) 272{ 273 vm_offset_t va, endva; 274 275 va = trunc_page((vm_offset_t)t); 276 endva = va + round_page(size); 277 278 /* Free the kernel virtual mapping. */ 279 kmem_free(kernel_map, va, endva - va); 280} 281 282int 283i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 284 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 285 bus_addr_t *bpap, bus_space_handle_t *bshp) 286{ 287 288 panic("i80321_mem_bs_alloc(): not implemented"); 289} 290 291void 292i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 293{ 294 295 panic("i80321_mem_bs_free(): not implemented"); 296} 297