pxa2x0_space.c revision 1.5
1 /* $NetBSD: pxa2x0_space.c,v 1.5 2004/06/07 19:45:22 nathanw 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/cdefs.h> 79 __KERNEL_RCSID(0, "$NetBSD: pxa2x0_space.c,v 1.5 2004/06/07 19:45:22 nathanw Exp $"); 80 81 #include <sys/param.h> 82 #include <sys/systm.h> 83 84 #include <uvm/uvm_extern.h> 85 86 #include <machine/bus.h> 87 88 /* Prototypes for all the bus_space structure functions */ 89 bs_protos(pxa2x0); 90 bs_protos(generic); 91 bs_protos(generic_armv4); 92 bs_protos(bs_notimpl); 93 94 struct bus_space pxa2x0_bs_tag = { 95 /* cookie */ 96 (void *) 0, 97 98 /* mapping/unmapping */ 99 pxa2x0_bs_map, 100 pxa2x0_bs_unmap, 101 pxa2x0_bs_subregion, 102 103 /* allocation/deallocation */ 104 pxa2x0_bs_alloc, /* not implemented */ 105 pxa2x0_bs_free, /* not implemented */ 106 107 /* get kernel virtual address */ 108 pxa2x0_bs_vaddr, 109 110 /* mmap */ 111 bs_notimpl_bs_mmap, 112 113 /* barrier */ 114 pxa2x0_bs_barrier, 115 116 /* read (single) */ 117 generic_bs_r_1, 118 generic_armv4_bs_r_2, 119 generic_bs_r_4, 120 bs_notimpl_bs_r_8, 121 122 /* read multiple */ 123 generic_bs_rm_1, 124 generic_armv4_bs_rm_2, 125 generic_bs_rm_4, 126 bs_notimpl_bs_rm_8, 127 128 /* read region */ 129 generic_bs_rr_1, 130 generic_armv4_bs_rr_2, 131 generic_bs_rr_4, 132 bs_notimpl_bs_rr_8, 133 134 /* write (single) */ 135 generic_bs_w_1, 136 generic_armv4_bs_w_2, 137 generic_bs_w_4, 138 bs_notimpl_bs_w_8, 139 140 /* write multiple */ 141 generic_bs_wm_1, 142 generic_armv4_bs_wm_2, 143 generic_bs_wm_4, 144 bs_notimpl_bs_wm_8, 145 146 /* write region */ 147 generic_bs_wr_1, 148 generic_armv4_bs_wr_2, 149 generic_bs_wr_4, 150 bs_notimpl_bs_wr_8, 151 152 /* set multiple */ 153 bs_notimpl_bs_sm_1, 154 bs_notimpl_bs_sm_2, 155 bs_notimpl_bs_sm_4, 156 bs_notimpl_bs_sm_8, 157 158 /* set region */ 159 generic_bs_sr_1, 160 generic_armv4_bs_sr_2, 161 bs_notimpl_bs_sr_4, 162 bs_notimpl_bs_sr_8, 163 164 /* copy */ 165 bs_notimpl_bs_c_1, 166 generic_armv4_bs_c_2, 167 bs_notimpl_bs_c_4, 168 bs_notimpl_bs_c_8, 169 }; 170 171 int 172 pxa2x0_bs_map(void *t, bus_addr_t bpa, bus_size_t size, 173 int flag, bus_space_handle_t *bshp) 174 { 175 u_long startpa, endpa, pa; 176 vaddr_t va; 177 pt_entry_t *pte; 178 179 if ((u_long)bpa > (u_long)KERNEL_BASE) { 180 /* Some IO registers (ex. UART ports for console) 181 are mapped to fixed address by board specific 182 routine. */ 183 *bshp = bpa; 184 return(0); 185 } 186 187 startpa = trunc_page(bpa); 188 endpa = round_page(bpa + size); 189 190 /* XXX use extent manager to check duplicate mapping */ 191 192 va = uvm_km_valloc(kernel_map, endpa - startpa); 193 if (! va) 194 return(ENOMEM); 195 196 *bshp = (bus_space_handle_t)(va + (bpa - startpa)); 197 198 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 199 pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE); 200 if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) { 201 pte = vtopte(va); 202 *pte &= ~L2_S_CACHE_MASK; 203 PTE_SYNC(pte); 204 /* XXX: pmap_kenter_pa() also does PTE_SYNC(). a bit of 205 * waste. 206 */ 207 } 208 } 209 pmap_update(pmap_kernel()); 210 211 return(0); 212 } 213 214 void 215 pxa2x0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 216 { 217 218 if (bsh > (u_long)KERNEL_BASE) 219 return; 220 221 uvm_km_free(kernel_map, bsh, size); 222 } 223 224 225 int 226 pxa2x0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 227 bus_size_t size, bus_space_handle_t *nbshp) 228 { 229 230 *nbshp = bsh + offset; 231 return (0); 232 } 233 234 void 235 pxa2x0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 236 bus_size_t len, int flags) 237 { 238 239 /* Nothing to do. */ 240 } 241 242 void * 243 pxa2x0_bs_vaddr(void *t, bus_space_handle_t bsh) 244 { 245 246 return ((void *)bsh); 247 } 248 249 250 int 251 pxa2x0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 252 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 253 bus_addr_t *bpap, bus_space_handle_t *bshp) 254 { 255 256 panic("pxa2x0_io_bs_alloc(): not implemented\n"); 257 } 258 259 void 260 pxa2x0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 261 { 262 263 panic("pxa2x0_io_bs_free(): not implemented\n"); 264 } 265 266
Indexes created Mon Sep 29 21:09:56 GMT 2025