imx_space.c revision 1.2.2.2
1 1.2.2.2 uebayasi /* $Id: imx_space.c,v 1.2.2.2 2010/11/15 14:38:22 uebayasi Exp $ */ 2 1.2.2.2 uebayasi 3 1.2.2.2 uebayasi /* derived from: */ 4 1.2.2.2 uebayasi /* $NetBSD: imx_space.c,v 1.2.2.2 2010/11/15 14:38:22 uebayasi Exp $ */ 5 1.2.2.2 uebayasi 6 1.2.2.2 uebayasi /* 7 1.2.2.2 uebayasi * Copyright (c) 2001, 2002 Wasabi Systems, Inc. 8 1.2.2.2 uebayasi * All rights reserved. 9 1.2.2.2 uebayasi * 10 1.2.2.2 uebayasi * Written by Jason R. Thorpe for Wasabi Systems, Inc. 11 1.2.2.2 uebayasi * 12 1.2.2.2 uebayasi * Redistribution and use in source and binary forms, with or without 13 1.2.2.2 uebayasi * modification, are permitted provided that the following conditions 14 1.2.2.2 uebayasi * are met: 15 1.2.2.2 uebayasi * 1. Redistributions of source code must retain the above copyright 16 1.2.2.2 uebayasi * notice, this list of conditions and the following disclaimer. 17 1.2.2.2 uebayasi * 2. Redistributions in binary form must reproduce the above copyright 18 1.2.2.2 uebayasi * notice, this list of conditions and the following disclaimer in the 19 1.2.2.2 uebayasi * documentation and/or other materials provided with the distribution. 20 1.2.2.2 uebayasi * 3. All advertising materials mentioning features or use of this software 21 1.2.2.2 uebayasi * must display the following acknowledgement: 22 1.2.2.2 uebayasi * This product includes software developed for the NetBSD Project by 23 1.2.2.2 uebayasi * Wasabi Systems, Inc. 24 1.2.2.2 uebayasi * 4. The name of Wasabi Systems, Inc. may not be used to endorse 25 1.2.2.2 uebayasi * or promote products derived from this software without specific prior 26 1.2.2.2 uebayasi * written permission. 27 1.2.2.2 uebayasi * 28 1.2.2.2 uebayasi * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND 29 1.2.2.2 uebayasi * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 1.2.2.2 uebayasi * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 1.2.2.2 uebayasi * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC 32 1.2.2.2 uebayasi * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 1.2.2.2 uebayasi * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 1.2.2.2 uebayasi * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 1.2.2.2 uebayasi * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 1.2.2.2 uebayasi * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 1.2.2.2 uebayasi * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 1.2.2.2 uebayasi * POSSIBILITY OF SUCH DAMAGE. 39 1.2.2.2 uebayasi */ 40 1.2.2.2 uebayasi /* 41 1.2.2.2 uebayasi * Copyright (c) 1997 Mark Brinicombe. 42 1.2.2.2 uebayasi * Copyright (c) 1997 Causality Limited. 43 1.2.2.2 uebayasi * All rights reserved. 44 1.2.2.2 uebayasi * 45 1.2.2.2 uebayasi * This code is derived from software contributed to The NetBSD Foundation 46 1.2.2.2 uebayasi * by Ichiro FUKUHARA. 47 1.2.2.2 uebayasi * 48 1.2.2.2 uebayasi * Redistribution and use in source and binary forms, with or without 49 1.2.2.2 uebayasi * modification, are permitted provided that the following conditions 50 1.2.2.2 uebayasi * are met: 51 1.2.2.2 uebayasi * 1. Redistributions of source code must retain the above copyright 52 1.2.2.2 uebayasi * notice, this list of conditions and the following disclaimer. 53 1.2.2.2 uebayasi * 2. Redistributions in binary form must reproduce the above copyright 54 1.2.2.2 uebayasi * notice, this list of conditions and the following disclaimer in the 55 1.2.2.2 uebayasi * documentation and/or other materials provided with the distribution. 56 1.2.2.2 uebayasi * 3. All advertising materials mentioning features or use of this software 57 1.2.2.2 uebayasi * must display the following acknowledgement: 58 1.2.2.2 uebayasi * This product includes software developed by Mark Brinicombe. 59 1.2.2.2 uebayasi * 4. The name of the company nor the name of the author may be used to 60 1.2.2.2 uebayasi * endorse or promote products derived from this software without specific 61 1.2.2.2 uebayasi * prior written permission. 62 1.2.2.2 uebayasi * 63 1.2.2.2 uebayasi * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED 64 1.2.2.2 uebayasi * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 65 1.2.2.2 uebayasi * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 66 1.2.2.2 uebayasi * IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, 67 1.2.2.2 uebayasi * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 68 1.2.2.2 uebayasi * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 69 1.2.2.2 uebayasi * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 70 1.2.2.2 uebayasi * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 71 1.2.2.2 uebayasi * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 72 1.2.2.2 uebayasi * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 73 1.2.2.2 uebayasi * SUCH DAMAGE. 74 1.2.2.2 uebayasi */ 75 1.2.2.2 uebayasi 76 1.2.2.2 uebayasi /* 77 1.2.2.2 uebayasi * bus_space(9) support for Freescale iMX31 processor 78 1.2.2.2 uebayasi */ 79 1.2.2.2 uebayasi 80 1.2.2.2 uebayasi #include <sys/param.h> 81 1.2.2.2 uebayasi #include <sys/systm.h> 82 1.2.2.2 uebayasi #include <uvm/uvm_extern.h> 83 1.2.2.2 uebayasi #include <machine/bus.h> 84 1.2.2.2 uebayasi 85 1.2.2.2 uebayasi bs_protos(imx); 86 1.2.2.2 uebayasi bs_protos(generic); 87 1.2.2.2 uebayasi bs_protos(generic_armv4); 88 1.2.2.2 uebayasi bs_protos(bs_notimpl); 89 1.2.2.2 uebayasi 90 1.2.2.2 uebayasi struct bus_space imx_bs_tag = { 91 1.2.2.2 uebayasi /* cookie */ 92 1.2.2.2 uebayasi (void *) 0, 93 1.2.2.2 uebayasi 94 1.2.2.2 uebayasi /* mapping/unmapping */ 95 1.2.2.2 uebayasi imx_bs_map, 96 1.2.2.2 uebayasi imx_bs_unmap, 97 1.2.2.2 uebayasi imx_bs_subregion, 98 1.2.2.2 uebayasi 99 1.2.2.2 uebayasi /* allocation/deallocation */ 100 1.2.2.2 uebayasi imx_bs_alloc, /* not implemented */ 101 1.2.2.2 uebayasi imx_bs_free, /* not implemented */ 102 1.2.2.2 uebayasi 103 1.2.2.2 uebayasi /* get kernel virtual address */ 104 1.2.2.2 uebayasi imx_bs_vaddr, 105 1.2.2.2 uebayasi 106 1.2.2.2 uebayasi /* mmap */ 107 1.2.2.2 uebayasi bs_notimpl_bs_mmap, 108 1.2.2.2 uebayasi 109 1.2.2.2 uebayasi /* barrier */ 110 1.2.2.2 uebayasi imx_bs_barrier, 111 1.2.2.2 uebayasi 112 1.2.2.2 uebayasi /* read (single) */ 113 1.2.2.2 uebayasi generic_bs_r_1, 114 1.2.2.2 uebayasi generic_armv4_bs_r_2, 115 1.2.2.2 uebayasi generic_bs_r_4, 116 1.2.2.2 uebayasi bs_notimpl_bs_r_8, 117 1.2.2.2 uebayasi 118 1.2.2.2 uebayasi /* read multiple */ 119 1.2.2.2 uebayasi generic_bs_rm_1, 120 1.2.2.2 uebayasi generic_armv4_bs_rm_2, 121 1.2.2.2 uebayasi generic_bs_rm_4, 122 1.2.2.2 uebayasi bs_notimpl_bs_rm_8, 123 1.2.2.2 uebayasi 124 1.2.2.2 uebayasi /* read region */ 125 1.2.2.2 uebayasi generic_bs_rr_1, 126 1.2.2.2 uebayasi generic_armv4_bs_rr_2, 127 1.2.2.2 uebayasi generic_bs_rr_4, 128 1.2.2.2 uebayasi bs_notimpl_bs_rr_8, 129 1.2.2.2 uebayasi 130 1.2.2.2 uebayasi /* write (single) */ 131 1.2.2.2 uebayasi generic_bs_w_1, 132 1.2.2.2 uebayasi generic_armv4_bs_w_2, 133 1.2.2.2 uebayasi generic_bs_w_4, 134 1.2.2.2 uebayasi bs_notimpl_bs_w_8, 135 1.2.2.2 uebayasi 136 1.2.2.2 uebayasi /* write multiple */ 137 1.2.2.2 uebayasi generic_bs_wm_1, 138 1.2.2.2 uebayasi generic_armv4_bs_wm_2, 139 1.2.2.2 uebayasi generic_bs_wm_4, 140 1.2.2.2 uebayasi bs_notimpl_bs_wm_8, 141 1.2.2.2 uebayasi 142 1.2.2.2 uebayasi /* write region */ 143 1.2.2.2 uebayasi generic_bs_wr_1, 144 1.2.2.2 uebayasi generic_armv4_bs_wr_2, 145 1.2.2.2 uebayasi generic_bs_wr_4, 146 1.2.2.2 uebayasi bs_notimpl_bs_wr_8, 147 1.2.2.2 uebayasi 148 1.2.2.2 uebayasi /* set multiple */ 149 1.2.2.2 uebayasi bs_notimpl_bs_sm_1, 150 1.2.2.2 uebayasi bs_notimpl_bs_sm_2, 151 1.2.2.2 uebayasi bs_notimpl_bs_sm_4, 152 1.2.2.2 uebayasi bs_notimpl_bs_sm_8, 153 1.2.2.2 uebayasi 154 1.2.2.2 uebayasi /* set region */ 155 1.2.2.2 uebayasi generic_bs_sr_1, 156 1.2.2.2 uebayasi generic_armv4_bs_sr_2, 157 1.2.2.2 uebayasi bs_notimpl_bs_sr_4, 158 1.2.2.2 uebayasi bs_notimpl_bs_sr_8, 159 1.2.2.2 uebayasi 160 1.2.2.2 uebayasi /* copy */ 161 1.2.2.2 uebayasi bs_notimpl_bs_c_1, 162 1.2.2.2 uebayasi generic_armv4_bs_c_2, 163 1.2.2.2 uebayasi bs_notimpl_bs_c_4, 164 1.2.2.2 uebayasi bs_notimpl_bs_c_8, 165 1.2.2.2 uebayasi }; 166 1.2.2.2 uebayasi 167 1.2.2.2 uebayasi int 168 1.2.2.2 uebayasi imx_bs_map(void *t, bus_addr_t bpa, bus_size_t size, 169 1.2.2.2 uebayasi int flag, bus_space_handle_t *bshp) 170 1.2.2.2 uebayasi { 171 1.2.2.2 uebayasi u_long startpa, endpa, pa; 172 1.2.2.2 uebayasi vaddr_t va; 173 1.2.2.2 uebayasi pt_entry_t *pte; 174 1.2.2.2 uebayasi const struct pmap_devmap *pd; 175 1.2.2.2 uebayasi 176 1.2.2.2 uebayasi if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) { 177 1.2.2.2 uebayasi /* Device was statically mapped. */ 178 1.2.2.2 uebayasi *bshp = pd->pd_va + (bpa - pd->pd_pa); 179 1.2.2.2 uebayasi return 0; 180 1.2.2.2 uebayasi } 181 1.2.2.2 uebayasi 182 1.2.2.2 uebayasi startpa = trunc_page(bpa); 183 1.2.2.2 uebayasi endpa = round_page(bpa + size); 184 1.2.2.2 uebayasi 185 1.2.2.2 uebayasi /* XXX use extent manager to check duplicate mapping */ 186 1.2.2.2 uebayasi 187 1.2.2.2 uebayasi va = uvm_km_alloc(kernel_map, endpa - startpa, 0, 188 1.2.2.2 uebayasi UVM_KMF_VAONLY | UVM_KMF_NOWAIT); 189 1.2.2.2 uebayasi if (! va) 190 1.2.2.2 uebayasi return(ENOMEM); 191 1.2.2.2 uebayasi 192 1.2.2.2 uebayasi *bshp = (bus_space_handle_t)(va + (bpa - startpa)); 193 1.2.2.2 uebayasi 194 1.2.2.2 uebayasi for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 195 1.2.2.2 uebayasi pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, 0); 196 1.2.2.2 uebayasi if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) { 197 1.2.2.2 uebayasi pte = vtopte(va); 198 1.2.2.2 uebayasi *pte &= ~L2_S_CACHE_MASK; 199 1.2.2.2 uebayasi PTE_SYNC(pte); 200 1.2.2.2 uebayasi /* XXX: pmap_kenter_pa() also does PTE_SYNC(). a bit of 201 1.2.2.2 uebayasi * waste. 202 1.2.2.2 uebayasi */ 203 1.2.2.2 uebayasi } 204 1.2.2.2 uebayasi } 205 1.2.2.2 uebayasi pmap_update(pmap_kernel()); 206 1.2.2.2 uebayasi 207 1.2.2.2 uebayasi return(0); 208 1.2.2.2 uebayasi } 209 1.2.2.2 uebayasi 210 1.2.2.2 uebayasi void 211 1.2.2.2 uebayasi imx_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 212 1.2.2.2 uebayasi { 213 1.2.2.2 uebayasi vaddr_t va; 214 1.2.2.2 uebayasi vsize_t sz; 215 1.2.2.2 uebayasi 216 1.2.2.2 uebayasi if (pmap_devmap_find_va(bsh, size) != NULL) { 217 1.2.2.2 uebayasi /* Device was statically mapped; nothing to do. */ 218 1.2.2.2 uebayasi return; 219 1.2.2.2 uebayasi } 220 1.2.2.2 uebayasi 221 1.2.2.2 uebayasi va = trunc_page(bsh); 222 1.2.2.2 uebayasi sz = round_page(bsh + size) - va; 223 1.2.2.2 uebayasi 224 1.2.2.2 uebayasi pmap_kremove(va, sz); 225 1.2.2.2 uebayasi pmap_update(pmap_kernel()); 226 1.2.2.2 uebayasi uvm_km_free(kernel_map, va, sz, UVM_KMF_VAONLY); 227 1.2.2.2 uebayasi } 228 1.2.2.2 uebayasi 229 1.2.2.2 uebayasi 230 1.2.2.2 uebayasi int 231 1.2.2.2 uebayasi imx_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 232 1.2.2.2 uebayasi bus_size_t size, bus_space_handle_t *nbshp) 233 1.2.2.2 uebayasi { 234 1.2.2.2 uebayasi 235 1.2.2.2 uebayasi *nbshp = bsh + offset; 236 1.2.2.2 uebayasi return (0); 237 1.2.2.2 uebayasi } 238 1.2.2.2 uebayasi 239 1.2.2.2 uebayasi void 240 1.2.2.2 uebayasi imx_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 241 1.2.2.2 uebayasi bus_size_t len, int flags) 242 1.2.2.2 uebayasi { 243 1.2.2.2 uebayasi 244 1.2.2.2 uebayasi /* Nothing to do. */ 245 1.2.2.2 uebayasi } 246 1.2.2.2 uebayasi 247 1.2.2.2 uebayasi void * 248 1.2.2.2 uebayasi imx_bs_vaddr(void *t, bus_space_handle_t bsh) 249 1.2.2.2 uebayasi { 250 1.2.2.2 uebayasi 251 1.2.2.2 uebayasi return ((void *)bsh); 252 1.2.2.2 uebayasi } 253 1.2.2.2 uebayasi 254 1.2.2.2 uebayasi 255 1.2.2.2 uebayasi int 256 1.2.2.2 uebayasi imx_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 257 1.2.2.2 uebayasi bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 258 1.2.2.2 uebayasi bus_addr_t *bpap, bus_space_handle_t *bshp) 259 1.2.2.2 uebayasi { 260 1.2.2.2 uebayasi 261 1.2.2.2 uebayasi panic("imx_io_bs_alloc(): not implemented\n"); 262 1.2.2.2 uebayasi } 263 1.2.2.2 uebayasi 264 1.2.2.2 uebayasi void 265 1.2.2.2 uebayasi imx_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 266 1.2.2.2 uebayasi { 267 1.2.2.2 uebayasi 268 1.2.2.2 uebayasi panic("imx_io_bs_free(): not implemented\n"); 269 1.2.2.2 uebayasi } 270 1.2.2.2 uebayasi 271 1.2.2.2 uebayasi 272
Indexes created Wed Oct 01 19:09:53 GMT 2025