1 /* $OpenBSD: armv7_space.c,v 1.11 2022/03/06 12:16:27 kettenis 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 * Copyright (c) 1997 Mark Brinicombe. 39 * Copyright (c) 1997 Causality Limited. 40 * All rights reserved. 41 * 42 * This code is derived from software contributed to The NetBSD Foundation 43 * by Ichiro FUKUHARA. 44 * 45 * Redistribution and use in source and binary forms, with or without 46 * modification, are permitted provided that the following conditions 47 * are met: 48 * 1. Redistributions of source code must retain the above copyright 49 * notice, this list of conditions and the following disclaimer. 50 * 2. Redistributions in binary form must reproduce the above copyright 51 * notice, this list of conditions and the following disclaimer in the 52 * documentation and/or other materials provided with the distribution. 53 * 3. All advertising materials mentioning features or use of this software 54 * must display the following acknowledgement: 55 * This product includes software developed by Mark Brinicombe. 56 * 4. The name of the company nor the name of the author may be used to 57 * endorse or promote products derived from this software without specific 58 * prior written permission. 59 * 60 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 61 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 62 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 63 * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 64 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 65 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 66 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 67 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 68 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 69 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 70 * SUCH DAMAGE. 71 */ 72 73 /* 74 * bus_space functions for Intel PXA2[51]0 application processor. 75 * Derived from i80321_space.c. 76 */ 77 78 #include <sys/param.h> 79 #include <sys/systm.h> 80 81 #include <uvm/uvm_extern.h> 82 83 #include <machine/bus.h> 84 85 /* Prototypes for all the bus_space structure functions */ 86 bs_protos(armv7); 87 bs_protos(generic); 88 bs_protos(bs_notimpl); 89 90 struct bus_space armv7_bs_tag = { 91 /* cookie */ 92 (void *) 0, 93 94 /* mapping/unmapping */ 95 armv7_bs_map, 96 armv7_bs_unmap, 97 armv7_bs_subregion, 98 99 /* allocation/deallocation */ 100 armv7_bs_alloc, /* not implemented */ 101 armv7_bs_free, /* not implemented */ 102 103 /* get kernel virtual address */ 104 armv7_bs_vaddr, 105 106 /* mmap */ 107 bs_notimpl_bs_mmap, 108 109 /* barrier */ 110 armv7_bs_barrier, 111 112 /* read (single) */ 113 armv7_bs_r_1, 114 armv7_bs_r_2, 115 armv7_bs_r_4, 116 bs_notimpl_bs_r_8, 117 118 /* read multiple */ 119 armv7_bs_rm_1, 120 armv7_bs_rm_2, 121 armv7_bs_rm_4, 122 bs_notimpl_bs_rm_8, 123 124 /* read region */ 125 armv7_bs_rr_1, 126 armv7_bs_rr_2, 127 armv7_bs_rr_4, 128 bs_notimpl_bs_rr_8, 129 130 /* write (single) */ 131 armv7_bs_w_1, 132 armv7_bs_w_2, 133 armv7_bs_w_4, 134 bs_notimpl_bs_w_8, 135 136 /* write multiple */ 137 armv7_bs_wm_1, 138 armv7_bs_wm_2, 139 armv7_bs_wm_4, 140 bs_notimpl_bs_wm_8, 141 142 /* write region */ 143 armv7_bs_wr_1, 144 armv7_bs_wr_2, 145 armv7_bs_wr_4, 146 bs_notimpl_bs_wr_8, 147 148 /* set multiple */ 149 bs_notimpl_bs_sm_1, 150 bs_notimpl_bs_sm_2, 151 bs_notimpl_bs_sm_4, 152 bs_notimpl_bs_sm_8, 153 154 /* set region */ 155 armv7_bs_sr_1, 156 armv7_bs_sr_2, 157 armv7_bs_sr_4, 158 bs_notimpl_bs_sr_8, 159 160 /* copy */ 161 bs_notimpl_bs_c_1, 162 armv7_bs_c_2, 163 bs_notimpl_bs_c_4, 164 bs_notimpl_bs_c_8, 165 }; 166 struct bus_space *fdt_cons_bs_tag = &armv7_bs_tag; 167 168 int 169 armv7_bs_map(void *t, uint64_t bpa, bus_size_t size, 170 int flags, bus_space_handle_t *bshp) 171 { 172 u_long startpa, endpa, pa; 173 vaddr_t va; 174 int pmap_flags = PMAP_DEVICE; 175 176 startpa = trunc_page(bpa); 177 endpa = round_page(bpa + size); 178 179 /* XXX use extent manager to check duplicate mapping */ 180 181 va = (vaddr_t)km_alloc(endpa - startpa, &kv_any, &kp_none, &kd_nowait); 182 if (va == 0) 183 return(ENOMEM); 184 185 *bshp = (bus_space_handle_t)(va + (bpa - startpa)); 186 187 if (flags & BUS_SPACE_MAP_CACHEABLE) 188 pmap_flags = 0; 189 190 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) 191 pmap_kenter_pa(va, pa | pmap_flags, PROT_READ | PROT_WRITE); 192 pmap_update(pmap_kernel()); 193 194 return(0); 195 } 196 197 void 198 armv7_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 199 { 200 vaddr_t va, endva; 201 202 va = trunc_page((vaddr_t)bsh); 203 endva = round_page((vaddr_t)bsh + size); 204 205 pmap_kremove(va, endva - va); 206 pmap_update(pmap_kernel()); 207 208 km_free((void *)va, endva - va, &kv_any, &kp_none); 209 } 210 211 int 212 armv7_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 213 bus_size_t size, bus_space_handle_t *nbshp) 214 { 215 216 *nbshp = bsh + offset; 217 return (0); 218 } 219 220 void 221 armv7_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 222 bus_size_t len, int flags) 223 { 224 cpu_drain_writebuf(); 225 } 226 227 void * 228 armv7_bs_vaddr(void *t, bus_space_handle_t bsh) 229 { 230 231 return ((void *)bsh); 232 } 233 234 235 int 236 armv7_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 237 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 238 bus_addr_t *bpap, bus_space_handle_t *bshp) 239 { 240 241 panic("armv7_io_bs_alloc(): not implemented"); 242 } 243 244 void 245 armv7_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 246 { 247 248 panic("armv7_io_bs_free(): not implemented"); 249 } 250 251