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 i81342 I/O Processor. 40 */ 41 42#include <sys/cdefs.h> 43__FBSDID("$FreeBSD$"); 44 45#include <sys/param.h> 46#include <sys/systm.h> 47#include <sys/bus.h> 48#include <sys/malloc.h> 49 50#include <machine/pcb.h> 51 52#include <vm/vm.h> 53#include <vm/vm_kern.h> 54#include <vm/pmap.h> 55#include <vm/vm_page.h> 56#include <vm/vm_extern.h> 57 58#include <machine/bus.h> 59 60#include <arm/xscale/i8134x/i81342reg.h> 61#include <arm/xscale/i8134x/i81342var.h> 62 63/* Prototypes for all the bus_space structure functions */ 64bs_protos(i81342); 65bs_protos(i81342_io); 66bs_protos(i81342_mem); 67bs_protos(generic); 68bs_protos(generic_armv4); 69 70/* 71 * Template bus_space -- copied, and the bits that are NULL are 72 * filled in. 73 */ 74const struct bus_space i81342_bs_tag_template = { 75 /* cookie */ 76 (void *) 0, 77 78 /* mapping/unmapping */ 79 NULL, 80 NULL, 81 i81342_bs_subregion, 82 83 /* allocation/deallocation */ 84 NULL, 85 NULL, 86 87 /* barrier */ 88 i81342_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 generic_bs_rr_1, 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 /* read (single) stream */ 145 generic_bs_r_1, 146 generic_armv4_bs_r_2, 147 generic_bs_r_4, 148 NULL, 149 150 /* read multiple stream */ 151 generic_bs_rm_1, 152 generic_armv4_bs_rm_2, 153 generic_bs_rm_4, 154 NULL, 155 156 /* read region stream */ 157 generic_bs_rr_1, 158 generic_armv4_bs_rr_2, 159 generic_bs_rr_4, 160 NULL, 161 162 /* write (single) stream */ 163 generic_bs_w_1, 164 generic_armv4_bs_w_2, 165 generic_bs_w_4, 166 NULL, 167 168 /* write multiple stream */ 169 generic_bs_wm_1, 170 generic_armv4_bs_wm_2, 171 generic_bs_wm_4, 172 NULL, 173 174 /* write region stream */ 175 NULL, 176 generic_armv4_bs_wr_2, 177 generic_bs_wr_4, 178 NULL, 179}; 180 181void 182i81342_bs_init(bus_space_tag_t bs, void *cookie) 183{ 184 185 *bs = i81342_bs_tag_template; 186 bs->bs_cookie = cookie; 187} 188 189void 190i81342_io_bs_init(bus_space_tag_t bs, void *cookie) 191{ 192 193 *bs = i81342_bs_tag_template; 194 bs->bs_cookie = cookie; 195 196 bs->bs_map = i81342_io_bs_map; 197 bs->bs_unmap = i81342_io_bs_unmap; 198 bs->bs_alloc = i81342_io_bs_alloc; 199 bs->bs_free = i81342_io_bs_free; 200 201} 202 203void 204i81342_mem_bs_init(bus_space_tag_t bs, void *cookie) 205{ 206 207 *bs = i81342_bs_tag_template; 208 bs->bs_cookie = cookie; 209 210 bs->bs_map = i81342_mem_bs_map; 211 bs->bs_unmap = i81342_mem_bs_unmap; 212 bs->bs_alloc = i81342_mem_bs_alloc; 213 bs->bs_free = i81342_mem_bs_free; 214 215} 216 217/* *** Routines shared by i81342, PCI IO, and PCI MEM. *** */ 218 219int 220i81342_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 221 bus_size_t size, bus_space_handle_t *nbshp) 222{ 223 224 *nbshp = bsh + offset; 225 return (0); 226} 227 228void 229i81342_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 230 bus_size_t len, int flags) 231{ 232 233 /* Nothing to do. */ 234} 235 236/* *** Routines for PCI IO. *** */ 237 238int 239i81342_io_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 240 bus_space_handle_t *bshp) 241{ 242 243 *bshp = bpa; 244 return (0); 245} 246 247void 248i81342_io_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) 249{ 250 251 /* Nothing to do. */ 252} 253 254int 255i81342_io_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 256 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 257 bus_addr_t *bpap, bus_space_handle_t *bshp) 258{ 259 260 panic("i81342_io_bs_alloc(): not implemented"); 261} 262 263void 264i81342_io_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 265{ 266 267 panic("i81342_io_bs_free(): not implemented"); 268} 269 270 271/* *** Routines for PCI MEM. *** */ 272extern int badaddr_read(void *, int, void *); 273static vm_offset_t allocable = 0xe1000000; 274int 275i81342_mem_bs_map(void *t, bus_addr_t bpa, bus_size_t size, int flags, 276 bus_space_handle_t *bshp) 277{ 278 struct i81342_pci_softc *sc = (struct i81342_pci_softc *)t; 279 struct i81342_pci_map *tmp; 280 vm_offset_t addr, endaddr; 281 vm_paddr_t paddr; 282 283 /* Lookup to see if we already have a mapping at this address. */ 284 tmp = sc->sc_pci_mappings; 285 while (tmp) { 286 if (tmp->paddr <= bpa && tmp->paddr + tmp->size > 287 bpa + size) { 288 *bshp = bpa - tmp->paddr + tmp->vaddr; 289 return (0); 290 } 291 tmp = tmp->next; 292 } 293 addr = allocable; 294 endaddr = ((addr + size) &~ (0x1000000 - 1)) + 0x1000000; 295 if (endaddr >= IOP34X_VADDR) 296 panic("PCI virtual memory exhausted"); 297 allocable = endaddr; 298 tmp = malloc(sizeof(*tmp), M_DEVBUF, M_WAITOK); 299 tmp->next = NULL; 300 paddr = bpa &~ (0x100000 - 1); 301 tmp->paddr = paddr; 302 tmp->vaddr = addr; 303 tmp->size = 0; 304 while (addr < endaddr) { 305 pmap_kenter_supersection(addr, paddr + (sc->sc_is_atux ? 306 IOP34X_PCIX_OMBAR : IOP34X_PCIE_OMBAR), 0); 307 addr += 0x1000000; 308 paddr += 0x1000000; 309 tmp->size += 0x1000000; 310 } 311 tmp->next = sc->sc_pci_mappings; 312 sc->sc_pci_mappings = tmp; 313 *bshp = bpa - tmp->paddr + tmp->vaddr; 314 return (0); 315} 316 317void 318i81342_mem_bs_unmap(void *t, bus_space_handle_t h, bus_size_t size) 319{ 320#if 0 321 vm_offset_t va, endva; 322 323 va = trunc_page((vm_offset_t)t); 324 endva = va + round_page(size); 325 326 /* Free the kernel virtual mapping. */ 327 kmem_free(kernel_map, va, endva - va); 328#endif 329} 330 331int 332i81342_mem_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 333 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 334 bus_addr_t *bpap, bus_space_handle_t *bshp) 335{ 336 337 panic("i81342_mem_bs_alloc(): not implemented"); 338} 339 340void 341i81342_mem_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 342{ 343 344 panic("i81342_mem_bs_free(): not implemented"); 345} 346