1/* $NetBSD: pxa2x0_space.c,v 1.14 2023/04/21 15:00:48 skrll 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 1.14 2023/04/21 15:00:48 skrll Exp $"); 80 81#include <sys/param.h> 82#include <sys/systm.h> 83 84#include <uvm/uvm_extern.h> 85 86#include <sys/bus.h> 87 88/* Prototypes for all the bus_space structure functions */ 89bs_protos(pxa2x0); 90bs_protos(generic); 91bs_protos(generic_armv4); 92bs_protos(bs_notimpl); 93 94struct bus_space pxa2x0_bs_tag = { 95 /* cookie */ 96 .bs_cookie = (void *) 0, 97 98 /* mapping/unmapping */ 99 .bs_map = pxa2x0_bs_map, 100 .bs_unmap = pxa2x0_bs_unmap, 101 .bs_subregion = pxa2x0_bs_subregion, 102 103 /* allocation/deallocation */ 104 .bs_alloc = pxa2x0_bs_alloc, /* not implemented */ 105 .bs_free = pxa2x0_bs_free, /* not implemented */ 106 107 /* get kernel virtual address */ 108 .bs_vaddr = pxa2x0_bs_vaddr, 109 110 /* mmap */ 111 .bs_mmap = bs_notimpl_bs_mmap, 112 113 /* barrier */ 114 .bs_barrier = pxa2x0_bs_barrier, 115 116 /* read (single) */ 117 .bs_r_1 = generic_bs_r_1, 118 .bs_r_2 = generic_armv4_bs_r_2, 119 .bs_r_4 = generic_bs_r_4, 120 .bs_r_8 = bs_notimpl_bs_r_8, 121 122 /* read multiple */ 123 .bs_rm_1 = generic_bs_rm_1, 124 .bs_rm_2 = generic_armv4_bs_rm_2, 125 .bs_rm_4 = generic_bs_rm_4, 126 .bs_rm_8 = bs_notimpl_bs_rm_8, 127 128 /* read region */ 129 .bs_rr_1 = generic_bs_rr_1, 130 .bs_rr_2 = generic_armv4_bs_rr_2, 131 .bs_rr_4 = generic_bs_rr_4, 132 .bs_rr_8 = bs_notimpl_bs_rr_8, 133 134 /* write (single) */ 135 .bs_w_1 = generic_bs_w_1, 136 .bs_w_2 = generic_armv4_bs_w_2, 137 .bs_w_4 = generic_bs_w_4, 138 .bs_w_8 = bs_notimpl_bs_w_8, 139 140 /* write multiple */ 141 .bs_wm_1 = generic_bs_wm_1, 142 .bs_wm_2 = generic_armv4_bs_wm_2, 143 .bs_wm_4 = generic_bs_wm_4, 144 .bs_wm_8 = bs_notimpl_bs_wm_8, 145 146 /* write region */ 147 .bs_wr_1 = generic_bs_wr_1, 148 .bs_wr_2 = generic_armv4_bs_wr_2, 149 .bs_wr_4 = generic_bs_wr_4, 150 .bs_wr_8 = bs_notimpl_bs_wr_8, 151 152 /* set multiple */ 153 .bs_sm_1 = bs_notimpl_bs_sm_1, 154 .bs_sm_2 = bs_notimpl_bs_sm_2, 155 .bs_sm_4 = bs_notimpl_bs_sm_4, 156 .bs_sm_8 = bs_notimpl_bs_sm_8, 157 158 /* set region */ 159 .bs_sr_1 = generic_bs_sr_1, 160 .bs_sr_2 = generic_armv4_bs_sr_2, 161 .bs_sr_4 = bs_notimpl_bs_sr_4, 162 .bs_sr_8 = bs_notimpl_bs_sr_8, 163 164 /* copy */ 165 .bs_c_1 = bs_notimpl_bs_c_1, 166 .bs_c_2 = generic_armv4_bs_c_2, 167 .bs_c_4 = bs_notimpl_bs_c_4, 168 .bs_c_8 = bs_notimpl_bs_c_8, 169}; 170 171int 172pxa2x0_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 const struct pmap_devmap *pd; 178 179 if ((pd = pmap_devmap_find_pa(bpa, size)) != NULL) { 180 /* Device was statically mapped. */ 181 *bshp = pd->pd_va + (bpa - pd->pd_pa); 182 return 0; 183 } 184 185 startpa = trunc_page(bpa); 186 endpa = round_page(bpa + size); 187 188 /* XXX use extent manager to check duplicate mapping */ 189 190 va = uvm_km_alloc(kernel_map, endpa - startpa, 0, 191 UVM_KMF_VAONLY | UVM_KMF_NOWAIT); 192 if (! va) 193 return(ENOMEM); 194 195 *bshp = (bus_space_handle_t)(va + (bpa - startpa)); 196 197 const int pmapflags = 198 (flag & (BUS_SPACE_MAP_CACHEABLE|BUS_SPACE_MAP_PREFETCHABLE)) 199 ? 0 200 : PMAP_NOCACHE; 201 202 for (pa = startpa; pa < endpa; pa += PAGE_SIZE, va += PAGE_SIZE) { 203 pmap_kenter_pa(va, pa, VM_PROT_READ | VM_PROT_WRITE, pmapflags); 204 } 205 pmap_update(pmap_kernel()); 206 207 return(0); 208} 209 210void 211pxa2x0_bs_unmap(void *t, bus_space_handle_t bsh, bus_size_t size) 212{ 213 vaddr_t va; 214 vsize_t sz; 215 216 if (pmap_devmap_find_va(bsh, size) != NULL) { 217 /* Device was statically mapped; nothing to do. */ 218 return; 219 } 220 221 va = trunc_page(bsh); 222 sz = round_page(bsh + size) - va; 223 224 pmap_kremove(va, sz); 225 pmap_update(pmap_kernel()); 226 uvm_km_free(kernel_map, va, sz, UVM_KMF_VAONLY); 227} 228 229 230int 231pxa2x0_bs_subregion(void *t, bus_space_handle_t bsh, bus_size_t offset, 232 bus_size_t size, bus_space_handle_t *nbshp) 233{ 234 235 *nbshp = bsh + offset; 236 return (0); 237} 238 239void 240pxa2x0_bs_barrier(void *t, bus_space_handle_t bsh, bus_size_t offset, 241 bus_size_t len, int flags) 242{ 243 244 /* Nothing to do. */ 245} 246 247void * 248pxa2x0_bs_vaddr(void *t, bus_space_handle_t bsh) 249{ 250 251 return ((void *)bsh); 252} 253 254 255int 256pxa2x0_bs_alloc(void *t, bus_addr_t rstart, bus_addr_t rend, 257 bus_size_t size, bus_size_t alignment, bus_size_t boundary, int flags, 258 bus_addr_t *bpap, bus_space_handle_t *bshp) 259{ 260 261 panic("pxa2x0_io_bs_alloc(): not implemented\n"); 262} 263 264void 265pxa2x0_bs_free(void *t, bus_space_handle_t bsh, bus_size_t size) 266{ 267 268 panic("pxa2x0_io_bs_free(): not implemented\n"); 269} 270 271