pxa2x0_space.c revision 1.2
1 /* $NetBSD: pxa2x0_space.c,v 1.2 2003/03/24 04:15:49 bsh 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(pxa2x0); 87 bs_protos(generic); 88 bs_protos(generic_armv4); 89 bs_protos(bs_notimpl); 90 91 struct bus_space pxa2x0_bs_tag = { 92 /* cookie */ 93 (void *) 0, 94 95 /* mapping/unmapping */ 96 pxa2x0_bs_map, 97 pxa2x0_bs_unmap, 98 pxa2x0_bs_subregion, 99 100 /* allocation/deallocation */ 101 pxa2x0_bs_alloc, /* not implemented */ 102 pxa2x0_bs_free, /* not implemented */ 103 104 /* get kernel virtual address */ 105 pxa2x0_bs_vaddr, 106 107 /* mmap */ 108 bs_notimpl_bs_mmap, 109 110 /* barrier */ 111 pxa2x0_bs_barrier, 112 113 /* read (single) */ 114 generic_bs_r_1, 115 generic_armv4_bs_r_2, 116 generic_bs_r_4, 117 bs_notimpl_bs_r_8, 118 119 /* read multiple */ 120 generic_bs_rm_1, 121 generic_armv4_bs_rm_2, 122 generic_bs_rm_4, 123 bs_notimpl_bs_rm_8, 124 125 /* read region */ 126 bs_notimpl_bs_rr_1, 127 generic_armv4_bs_rr_2, 128 generic_bs_rr_4, 129 bs_notimpl_bs_rr_8, 130 131 /* write (single) */ 132 generic_bs_w_1, 133 generic_armv4_bs_w_2, 134 generic_bs_w_4, 135 bs_notimpl_bs_w_8, 136 137 /* write multiple */ 138 generic_bs_wm_1, 139 generic_armv4_bs_wm_2, 140 generic_bs_wm_4, 141 bs_notimpl_bs_wm_8, 142 143 /* write region */ 144 bs_notimpl_bs_wr_1, 145 generic_armv4_bs_wr_2, 146 generic_bs_wr_4, 147 bs_notimpl_bs_wr_8, 148 149 /* set multiple */ 150 bs_notimpl_bs_sm_1, 151 bs_notimpl_bs_sm_2, 152 bs_notimpl_bs_sm_4, 153 bs_notimpl_bs_sm_8, 154 155 /* set region */ 156 bs_notimpl_bs_sr_1, 157 generic_armv4_bs_sr_2, 158 bs_notimpl_bs_sr_4, 159 bs_notimpl_bs_sr_8, 160 161 /* copy */ 162 bs_notimpl_bs_c_1, 163 generic_armv4_bs_c_2, 164 bs_notimpl_bs_c_4, 165 bs_notimpl_bs_c_8, 166 }; 167 168 int 169 pxa2x0_bs_map(void *t, bus_addr_t bpa, bus_size_t size, 170 int flag, bus_space_handle_t *bshp) 171 { 172 u_long startpa, endpa, pa; 173 vaddr_t va; 174 pt_entry_t *pte; 175 176 if ((u_long)bpa > (u_long)KERNEL_BASE) { 177 /* Some IO registers (ex. UART ports for console) 178 are mapped to fixed address by board specific 179 routine. */ 180 *bshp = bpa; 181 return(0); 182 } 183 184 startpa = trunc_page(bpa); 185 endpa = round_page(bpa + size); 186 187 /* XXX use extent manager to check duplicate mapping */ 188 189 va = uvm_km_valloc(kernel_map, endpa - startpa); 190 if (! va) 191 return(ENOMEM); 192 193 *bshp = (bus_space_handle_t)(va + (bpa - startpa)); 194 195 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 196 pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE); 197 if ((flag & BUS_SPACE_MAP_CACHEABLE) == 0) { 198 pte = vtopte(va); 199 *pte &= ~L2_S_CACHE_MASK; 200 PTE_SYNC(pte); 201 /* XXX: pmap_kenter_pa() also does PTE_SYNC(). a bit of 202 * waste. 203 */ 204 } 205 } 206 pmap_update(pmap_kernel()); 207 208 return(0); 209 } 210 211 void 212 pxa2x0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 213 { 214 215 /* Nothing to do. */ 216 } 217 218 219 int 220 pxa2x0_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 } 227 228 void 229 pxa2x0_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 void * 237 pxa2x0_bs_vaddr(void *t, bus_space_handle_t bsh) 238 { 239 240 return ((void *)bsh); 241 } 242 243 244 int 245 pxa2x0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 246 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 247 bus_addr_t *bpap, bus_space_handle_t *bshp) 248 { 249 250 panic("pxa2x0_io_bs_alloc(): not implemented\n"); 251 } 252 253 void 254 pxa2x0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 255 { 256 257 panic("pxa2x0_io_bs_free(): not implemented\n"); 258 } 259 260
Indexes created Sun Sep 28 07:09:56 GMT 2025