1/* $Id: imx_space.c,v 1.7 2023/04/21 15:00:48 skrll Exp $ */ 2 3/* derived from: */ 4/* $NetBSD: imx_space.c,v 1.7 2023/04/21 15:00:48 skrll Exp $ */ 5 6/* 7 * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 8 * All rights reserved. 9 * 10 * Written by Jason R. Thorpe for Wasabi Systems, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed for the NetBSD Project by 23 * Wasabi Systems, Inc. 24 * 4. The name of Wasabi Systems, Inc. may not be used to endorse 25 * or promote products derived from this software without specific prior 26 * written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 29 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40/* 41 * Copyright (c) 1997 Mark Brinicombe. 42 * Copyright (c) 1997 Causality Limited. 43 * All rights reserved. 44 * 45 * This code is derived from software contributed to The NetBSD Foundation 46 * by Ichiro FUKUHARA. 47 * 48 * Redistribution and use in source and binary forms, with or without 49 * modification, are permitted provided that the following conditions 50 * are met: 51 * 1. Redistributions of source code must retain the above copyright 52 * notice, this list of conditions and the following disclaimer. 53 * 2. Redistributions in binary form must reproduce the above copyright 54 * notice, this list of conditions and the following disclaimer in the 55 * documentation and/or other materials provided with the distribution. 56 * 3. All advertising materials mentioning features or use of this software 57 * must display the following acknowledgement: 58 * This product includes software developed by Mark Brinicombe. 59 * 4. The name of the company nor the name of the author may be used to 60 * endorse or promote products derived from this software without specific 61 * prior written permission. 62 * 63 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 64 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 65 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 66 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 67 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 68 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 69 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 70 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 71 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 72 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 73 * SUCH DAMAGE. 74 */ 75 76/* 77 * bus_space(9) support for Freescale iMX31 processor 78 */ 79 80#include <sys/param.h> 81#include <sys/systm.h> 82#include <uvm/uvm_extern.h> 83#include <sys/bus.h> 84 85bs_protos(imx); 86bs_protos(generic); 87bs_protos(generic_armv4); 88bs_protos(bs_notimpl); 89 90struct bus_space imx_bs_tag = { 91 /* cookie */ 92 .bs_cookie = (void *) 0, 93 94 /* mapping/unmapping */ 95 .bs_map = imx_bs_map, 96 .bs_unmap = imx_bs_unmap, 97 .bs_subregion = imx_bs_subregion, 98 99 /* allocation/deallocation */ 100 .bs_alloc = imx_bs_alloc, /* not implemented */ 101 .bs_free = imx_bs_free, /* not implemented */ 102 103 /* get kernel virtual address */ 104 .bs_vaddr = imx_bs_vaddr, 105 106 /* mmap */ 107 .bs_mmap = bs_notimpl_bs_mmap, 108 109 /* barrier */ 110 .bs_barrier = imx_bs_barrier, 111 112 /* read (single) */ 113 .bs_r_1 = generic_bs_r_1, 114 .bs_r_2 = generic_armv4_bs_r_2, 115 .bs_r_4 = generic_bs_r_4, 116 .bs_r_8 = bs_notimpl_bs_r_8, 117 118 /* read multiple */ 119 .bs_rm_1 = generic_bs_rm_1, 120 .bs_rm_2 = generic_armv4_bs_rm_2, 121 .bs_rm_4 = generic_bs_rm_4, 122 .bs_rm_8 = bs_notimpl_bs_rm_8, 123 124 /* read region */ 125 .bs_rr_1 = generic_bs_rr_1, 126 .bs_rr_2 = generic_armv4_bs_rr_2, 127 .bs_rr_4 = generic_bs_rr_4, 128 .bs_rr_8 = bs_notimpl_bs_rr_8, 129 130 /* write (single) */ 131 .bs_w_1 = generic_bs_w_1, 132 .bs_w_2 = generic_armv4_bs_w_2, 133 .bs_w_4 = generic_bs_w_4, 134 .bs_w_8 = bs_notimpl_bs_w_8, 135 136 /* write multiple */ 137 .bs_wm_1 = generic_bs_wm_1, 138 .bs_wm_2 = generic_armv4_bs_wm_2, 139 .bs_wm_4 = generic_bs_wm_4, 140 .bs_wm_8 = bs_notimpl_bs_wm_8, 141 142 /* write region */ 143 .bs_wr_1 = generic_bs_wr_1, 144 .bs_wr_2 = generic_armv4_bs_wr_2, 145 .bs_wr_4 = generic_bs_wr_4, 146 .bs_wr_8 = bs_notimpl_bs_wr_8, 147 148 /* set multiple */ 149 .bs_sm_1 = bs_notimpl_bs_sm_1, 150 .bs_sm_2 = bs_notimpl_bs_sm_2, 151 .bs_sm_4 = bs_notimpl_bs_sm_4, 152 .bs_sm_8 = bs_notimpl_bs_sm_8, 153 154 /* set region */ 155 .bs_sr_1 = generic_bs_sr_1, 156 .bs_sr_2 = generic_armv4_bs_sr_2, 157 .bs_sr_4 = bs_notimpl_bs_sr_4, 158 .bs_sr_8 = bs_notimpl_bs_sr_8, 159 160 /* copy */ 161 .bs_c_1 = bs_notimpl_bs_c_1, 162 .bs_c_2 = generic_armv4_bs_c_2, 163 .bs_c_4 = bs_notimpl_bs_c_4, 164 .bs_c_8 = bs_notimpl_bs_c_8, 165 166#ifdef __BUS_SPACE_HAS_STREAM_METHODS 167 /* read (single) */ 168 .bs_r_1_s = generic_bs_r_1, 169 .bs_r_2_s = generic_armv4_bs_r_2, 170 .bs_r_4_s = generic_bs_r_4, 171 .bs_r_8_s = bs_notimpl_bs_r_8, 172 173 /* read multiple */ 174 .bs_rm_1_s = generic_bs_rm_1, 175 .bs_rm_2_s = generic_armv4_bs_rm_2, 176 .bs_rm_4_s = generic_bs_rm_4, 177 .bs_rm_8_s = bs_notimpl_bs_rm_8, 178 179 /* read region */ 180 .bs_rr_1_s = generic_bs_rr_1, 181 .bs_rr_2_s = generic_armv4_bs_rr_2, 182 .bs_rr_4_s = generic_bs_rr_4, 183 .bs_rr_8_s = bs_notimpl_bs_rr_8, 184 185 /* write (single) */ 186 .bs_w_1_s = generic_bs_w_1, 187 .bs_w_2_s = generic_armv4_bs_w_2, 188 .bs_w_4_s = generic_bs_w_4, 189 .bs_w_8_s = bs_notimpl_bs_w_8, 190 191 /* write multiple */ 192 .bs_wm_1_s = generic_bs_wm_1, 193 .bs_wm_2_s = generic_armv4_bs_wm_2, 194 .bs_wm_4_s = generic_bs_wm_4, 195 .bs_wm_8_s = bs_notimpl_bs_wm_8, 196 197 /* write region */ 198 .bs_wr_1_s = generic_bs_wr_1, 199 .bs_wr_2_s = generic_armv4_bs_wr_2, 200 .bs_wr_4_s = generic_bs_wr_4, 201 .bs_wr_8_s = bs_notimpl_bs_wr_8, 202#endif 203}; 204 205int 206imx_bs_map(void *t, bus_addr_t bpa, bus_size_t size, 207 int flag, bus_space_handle_t *bshp) 208{ 209 const struct pmap_devmap *pd; 210 paddr_t startpa, endpa, pa; 211 vaddr_t va; 212 213 if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) { 214 /* Device was statically mapped. */ 215 *bshp = pd->pd_va + (bpa - pd->pd_pa); 216 return 0; 217 } 218 219 startpa = trunc_page(bpa); 220 endpa = round_page(bpa + size); 221 222 /* XXX use extent manager to check duplicate mapping */ 223 224 va = uvm_km_alloc(kernel_map, endpa - startpa, 0, 225 UVM_KMF_VAONLY | UVM_KMF_NOWAIT); 226 if (! va) 227 return(ENOMEM); 228 229 *bshp = (bus_space_handle_t)(va + (bpa - startpa)); 230 231 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 232 pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, 233 (flag & BUS_SPACE_MAP_CACHEABLE) ? 0 : PMAP_NOCACHE); 234 } 235 pmap_update(pmap_kernel()); 236 237 return(0); 238} 239 240void 241imx_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 242{ 243 vaddr_t va; 244 vsize_t sz; 245 246 if (pmap_devmap_find_va(bsh, size) != NULL) { 247 /* Device was statically mapped; nothing to do. */ 248 return; 249 } 250 251 va = trunc_page(bsh); 252 sz = round_page(bsh + size) - va; 253 254 pmap_kremove(va, sz); 255 pmap_update(pmap_kernel()); 256 uvm_km_free(kernel_map, va, sz, UVM_KMF_VAONLY); 257} 258 259 260int 261imx_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 262 bus_size_t size, bus_space_handle_t *nbshp) 263{ 264 265 *nbshp = bsh + offset; 266 return (0); 267} 268 269void 270imx_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 271 bus_size_t len, int flags) 272{ 273 274 /* Nothing to do. */ 275} 276 277void * 278imx_bs_vaddr(void *t, bus_space_handle_t bsh) 279{ 280 281 return ((void *)bsh); 282} 283 284 285int 286imx_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 287 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 288 bus_addr_t *bpap, bus_space_handle_t *bshp) 289{ 290 291 panic("imx_io_bs_alloc(): not implemented\n"); 292} 293 294void 295imx_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 296{ 297 298 panic("imx_io_bs_free(): not implemented\n"); 299} 300 301 302