i80321_space.c revision 135669
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 135669 2004-09-23 22:45:36Z cognet $"); 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); 68bs_protos(bs_notimpl); 69 70/* 71 * Template bus_space -- copied, and the bits that are NULL are 72 * filled in. 73 */ 74const struct bus_space i80321_bs_tag_template = { 75 /* cookie */ 76 (void *) 0, 77 78 /* mapping/unmapping */ 79 NULL, 80 NULL, 81 i80321_bs_subregion, 82 83 /* allocation/deallocation */ 84 NULL, 85 NULL, 86 87 /* barrier */ 88 i80321_bs_barrier, 89 90 /* read (single) */ 91 generic_bs_r_1, 92 generic_armv4_bs_r_2, 93 generic_bs_r_4, 94 NULL, 95 96 /* read multiple */ 97 generic_bs_rm_1, 98 generic_armv4_bs_rm_2, 99 generic_bs_rm_4, 100 NULL, 101 102 /* read region */ 103 NULL, 104 generic_armv4_bs_rr_2, 105 generic_bs_rr_4, 106 NULL, 107 108 /* write (single) */ 109 generic_bs_w_1, 110 generic_armv4_bs_w_2, 111 generic_bs_w_4, 112 NULL, 113 114 /* write multiple */ 115 generic_bs_wm_1, 116 generic_armv4_bs_wm_2, 117 generic_bs_wm_4, 118 NULL, 119 120 /* write region */ 121 NULL, 122 generic_armv4_bs_wr_2, 123 generic_bs_wr_4, 124 NULL, 125 126 /* set multiple */ 127 NULL, 128 NULL, 129 NULL, 130 NULL, 131 132 /* set region */ 133 NULL, 134 generic_armv4_bs_sr_2, 135 generic_bs_sr_4, 136 NULL, 137 138 /* copy */ 139 NULL, 140 generic_armv4_bs_c_2, 141 NULL, 142 NULL, 143}; 144 145void 146i80321_bs_init(bus_space_tag_t bs, void *cookie) 147{ 148 149 *bs = i80321_bs_tag_template; 150 bs->bs_cookie = cookie; 151} 152 153void 154i80321_io_bs_init(bus_space_tag_t bs, void *cookie) 155{ 156 157 *bs = i80321_bs_tag_template; 158 bs->bs_cookie = cookie; 159 160 bs->bs_map = i80321_io_bs_map; 161 bs->bs_unmap = i80321_io_bs_unmap; 162 bs->bs_alloc = i80321_io_bs_alloc; 163 bs->bs_free = i80321_io_bs_free; 164 165} 166 167void 168i80321_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} 180 181/* *** Routines shared by i80321, PCI IO, and PCI MEM. *** */ 182 183int 184i80321_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 185 bus_size_t size, bus_space_handle_t *nbshp) 186{ 187 188 *nbshp = bsh + offset; 189 return (0); 190} 191 192void 193i80321_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 194 bus_size_t len, int flags) 195{ 196 197 /* Nothing to do. */ 198} 199 200/* *** Routines for PCI IO. *** */ 201 202extern struct i80321_softc *i80321_softc; 203int 204i80321_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 205 bus_space_handle_t *bshp) 206{ 207 struct i80321_softc *sc = i80321_softc; 208 vm_offset_t winvaddr; 209 uint32_t busbase; 210 211 if (bpa >= sc->sc_ioout_xlate && 212 bpa < (sc->sc_ioout_xlate + VERDE_OUT_XLATE_IO_WIN_SIZE)) { 213 busbase = sc->sc_ioout_xlate; 214 winvaddr = sc->sc_iow_vaddr; 215 } else 216 return (EINVAL); 217 218 if ((bpa + size) >= (busbase + VERDE_OUT_XLATE_IO_WIN_SIZE)) 219 return (EINVAL); 220 221 /* 222 * Found the window -- PCI I/O space is mapped at a fixed 223 * virtual address by board-specific code. Translate the 224 * bus address to the virtual address. 225 */ 226 *bshp = winvaddr + (bpa - busbase); 227 228 return (0); 229} 230 231void 232i80321_io_bs_unmap(void *t, bus_size_t size) 233{ 234 235 /* Nothing to do. */ 236} 237 238int 239i80321_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 240 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 241 bus_addr_t *bpap, bus_space_handle_t *bshp) 242{ 243 244 panic("i80321_io_bs_alloc(): not implemented"); 245} 246 247void 248i80321_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 249{ 250 251 panic("i80321_io_bs_free(): not implemented"); 252} 253 254 255/* *** Routines for PCI MEM. *** */ 256extern int badaddr_read(void *, int, void *); 257int 258i80321_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 259 bus_space_handle_t *bshp) 260{ 261 262 vm_offset_t va; 263 uint32_t busbase; 264 vm_paddr_t pa, endpa, physbase; 265 266 /* 267 * Found the window -- PCI MEM space is not mapped by allocating 268 * some kernel VA space and mapping the pages with pmap_enter(). 269 * pmap_enter() will map unmanaged pages as non-cacheable. 270 */ 271 pa = trunc_page((bpa - busbase) + physbase); 272 endpa = round_page(((bpa - busbase) + physbase) + size); 273 pa = trunc_page(bpa); 274 endpa = round_page(bpa + size); 275 276 *bshp = va + (bpa & PAGE_MASK); 277 *bshp = pa; 278 *bshp = (vm_offset_t)pmap_mapdev(pa, endpa - pa); 279 280 return (0); 281} 282 283void 284i80321_mem_bs_unmap(void *t, bus_size_t size) 285{ 286 vm_offset_t va, endva; 287 288 va = trunc_page((vm_offset_t)t); 289 endva = va + round_page(size); 290 291 /* Free the kernel virtual mapping. */ 292 kmem_free(kernel_map, va, endva - va); 293} 294 295int 296i80321_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 297 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 298 bus_addr_t *bpap, bus_space_handle_t *bshp) 299{ 300 301 panic("i80321_mem_bs_alloc(): not implemented"); 302} 303 304void 305i80321_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 306{ 307 308 panic("i80321_mem_bs_free(): not implemented"); 309} 310