ld_sdmmc.c revision 1.2.2.3
1 1.2.2.3 jym /* $NetBSD: ld_sdmmc.c,v 1.2.2.3 2009/07/23 23:32:20 jym Exp $ */ 2 1.2.2.2 jym 3 1.2.2.2 jym /* 4 1.2.2.2 jym * Copyright (c) 2008 KIYOHARA Takashi 5 1.2.2.2 jym * All rights reserved. 6 1.2.2.2 jym * 7 1.2.2.2 jym * Redistribution and use in source and binary forms, with or without 8 1.2.2.2 jym * modification, are permitted provided that the following conditions 9 1.2.2.2 jym * are met: 10 1.2.2.2 jym * 1. Redistributions of source code must retain the above copyright 11 1.2.2.2 jym * notice, this list of conditions and the following disclaimer. 12 1.2.2.2 jym * 2. Redistributions in binary form must reproduce the above copyright 13 1.2.2.2 jym * notice, this list of conditions and the following disclaimer in the 14 1.2.2.2 jym * documentation and/or other materials provided with the distribution. 15 1.2.2.2 jym * 16 1.2.2.2 jym * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 1.2.2.2 jym * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 18 1.2.2.2 jym * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 19 1.2.2.2 jym * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 20 1.2.2.2 jym * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 21 1.2.2.2 jym * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 22 1.2.2.2 jym * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 1.2.2.2 jym * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 24 1.2.2.2 jym * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 25 1.2.2.2 jym * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 1.2.2.2 jym * POSSIBILITY OF SUCH DAMAGE. 27 1.2.2.2 jym * 28 1.2.2.2 jym */ 29 1.2.2.2 jym 30 1.2.2.2 jym #include <sys/cdefs.h> 31 1.2.2.3 jym __KERNEL_RCSID(0, "$NetBSD: ld_sdmmc.c,v 1.2.2.3 2009/07/23 23:32:20 jym Exp $"); 32 1.2.2.2 jym 33 1.2.2.2 jym #include "rnd.h" 34 1.2.2.2 jym 35 1.2.2.2 jym #include <sys/param.h> 36 1.2.2.2 jym #include <sys/systm.h> 37 1.2.2.2 jym #include <sys/kernel.h> 38 1.2.2.2 jym #include <sys/device.h> 39 1.2.2.2 jym #include <sys/buf.h> 40 1.2.2.2 jym #include <sys/bufq.h> 41 1.2.2.2 jym #include <sys/bus.h> 42 1.2.2.2 jym #include <sys/callout.h> 43 1.2.2.2 jym #include <sys/endian.h> 44 1.2.2.2 jym #include <sys/dkio.h> 45 1.2.2.2 jym #include <sys/disk.h> 46 1.2.2.3 jym #include <sys/kthread.h> 47 1.2.2.2 jym #if NRND > 0 48 1.2.2.2 jym #include <sys/rnd.h> 49 1.2.2.2 jym #endif 50 1.2.2.2 jym 51 1.2.2.2 jym #include <uvm/uvm_extern.h> 52 1.2.2.2 jym 53 1.2.2.2 jym #include <dev/ldvar.h> 54 1.2.2.2 jym 55 1.2.2.2 jym #include <dev/sdmmc/sdmmcvar.h> 56 1.2.2.2 jym 57 1.2.2.2 jym #ifdef SDMMC_DEBUG 58 1.2.2.2 jym #define DPRINTF(s) printf s 59 1.2.2.2 jym #else 60 1.2.2.2 jym #define DPRINTF(s) /**/ 61 1.2.2.2 jym #endif 62 1.2.2.2 jym 63 1.2.2.2 jym struct ld_sdmmc_softc; 64 1.2.2.2 jym 65 1.2.2.2 jym struct ld_sdmmc_task { 66 1.2.2.2 jym struct sdmmc_task task; 67 1.2.2.2 jym 68 1.2.2.2 jym struct ld_sdmmc_softc *task_sc; 69 1.2.2.2 jym struct buf *task_bp; 70 1.2.2.2 jym callout_t task_callout; 71 1.2.2.2 jym }; 72 1.2.2.2 jym 73 1.2.2.2 jym struct ld_sdmmc_softc { 74 1.2.2.2 jym struct ld_softc sc_ld; 75 1.2.2.2 jym int sc_hwunit; 76 1.2.2.2 jym 77 1.2.2.2 jym struct sdmmc_function *sc_sf; 78 1.2.2.2 jym struct ld_sdmmc_task sc_task; 79 1.2.2.2 jym }; 80 1.2.2.2 jym 81 1.2.2.2 jym static int ld_sdmmc_match(device_t, struct cfdata *, void *); 82 1.2.2.2 jym static void ld_sdmmc_attach(device_t, device_t, void *); 83 1.2.2.2 jym static int ld_sdmmc_detach(device_t, int); 84 1.2.2.2 jym 85 1.2.2.2 jym static int ld_sdmmc_dump(struct ld_softc *, void *, int, int); 86 1.2.2.2 jym static int ld_sdmmc_start(struct ld_softc *, struct buf *); 87 1.2.2.2 jym 88 1.2.2.3 jym static void ld_sdmmc_doattach(void *); 89 1.2.2.2 jym static void ld_sdmmc_dobio(void *); 90 1.2.2.2 jym static void ld_sdmmc_timeout(void *); 91 1.2.2.2 jym 92 1.2.2.2 jym CFATTACH_DECL_NEW(ld_sdmmc, sizeof(struct ld_sdmmc_softc), 93 1.2.2.2 jym ld_sdmmc_match, ld_sdmmc_attach, ld_sdmmc_detach, NULL); 94 1.2.2.2 jym 95 1.2.2.2 jym 96 1.2.2.2 jym /* ARGSUSED */ 97 1.2.2.2 jym static int 98 1.2.2.2 jym ld_sdmmc_match(device_t parent, struct cfdata *match, void *aux) 99 1.2.2.2 jym { 100 1.2.2.2 jym struct sdmmc_softc *sdmsc = device_private(parent); 101 1.2.2.2 jym 102 1.2.2.2 jym if (ISSET(sdmsc->sc_flags, SMF_MEM_MODE)) 103 1.2.2.2 jym return 1; 104 1.2.2.2 jym return 0; 105 1.2.2.2 jym } 106 1.2.2.2 jym 107 1.2.2.2 jym /* ARGSUSED */ 108 1.2.2.2 jym static void 109 1.2.2.2 jym ld_sdmmc_attach(device_t parent, device_t self, void *aux) 110 1.2.2.2 jym { 111 1.2.2.2 jym struct ld_sdmmc_softc *sc = device_private(self); 112 1.2.2.2 jym struct sdmmc_attach_args *sa = aux; 113 1.2.2.2 jym struct ld_softc *ld = &sc->sc_ld; 114 1.2.2.3 jym struct lwp *lwp; 115 1.2.2.2 jym 116 1.2.2.2 jym ld->sc_dv = self; 117 1.2.2.2 jym 118 1.2.2.2 jym aprint_normal("\n"); 119 1.2.2.2 jym aprint_naive("\n"); 120 1.2.2.2 jym 121 1.2.2.2 jym callout_init(&sc->sc_task.task_callout, CALLOUT_MPSAFE); 122 1.2.2.2 jym 123 1.2.2.2 jym sc->sc_hwunit = 0; /* always 0? */ 124 1.2.2.2 jym sc->sc_sf = sa->sf; 125 1.2.2.2 jym 126 1.2.2.2 jym ld->sc_flags = LDF_ENABLED; 127 1.2.2.2 jym ld->sc_secperunit = sc->sc_sf->csd.capacity; 128 1.2.2.2 jym ld->sc_secsize = sc->sc_sf->csd.sector_size; 129 1.2.2.2 jym ld->sc_maxxfer = MAXPHYS; 130 1.2.2.2 jym ld->sc_maxqueuecnt = 1; 131 1.2.2.2 jym ld->sc_dump = ld_sdmmc_dump; 132 1.2.2.2 jym ld->sc_start = ld_sdmmc_start; 133 1.2.2.2 jym 134 1.2.2.3 jym /* 135 1.2.2.3 jym * It is avoided that the error occurs when the card attaches it, 136 1.2.2.3 jym * when wedge is supported. 137 1.2.2.3 jym */ 138 1.2.2.3 jym if (kthread_create(PRI_NONE, KTHREAD_MPSAFE, NULL, 139 1.2.2.3 jym ld_sdmmc_doattach, sc, &lwp, "%sattach", device_xname(self))) { 140 1.2.2.3 jym aprint_error_dev(self, "couldn't create thread\n"); 141 1.2.2.3 jym } 142 1.2.2.3 jym } 143 1.2.2.3 jym 144 1.2.2.3 jym static void 145 1.2.2.3 jym ld_sdmmc_doattach(void *arg) 146 1.2.2.3 jym { 147 1.2.2.3 jym struct ld_sdmmc_softc *sc = (struct ld_sdmmc_softc *)arg; 148 1.2.2.3 jym struct ld_softc *ld = &sc->sc_ld; 149 1.2.2.3 jym 150 1.2.2.2 jym ldattach(ld); 151 1.2.2.3 jym kthread_exit(0); 152 1.2.2.2 jym } 153 1.2.2.2 jym 154 1.2.2.2 jym static int 155 1.2.2.2 jym ld_sdmmc_detach(device_t dev, int flags) 156 1.2.2.2 jym { 157 1.2.2.2 jym struct ld_sdmmc_softc *sc = device_private(dev); 158 1.2.2.2 jym struct ld_softc *ld = &sc->sc_ld; 159 1.2.2.2 jym int rv; 160 1.2.2.2 jym 161 1.2.2.2 jym if ((rv = ldbegindetach(ld, flags)) != 0) 162 1.2.2.2 jym return rv; 163 1.2.2.2 jym ldenddetach(ld); 164 1.2.2.2 jym 165 1.2.2.2 jym return 0; 166 1.2.2.2 jym } 167 1.2.2.2 jym 168 1.2.2.2 jym static int 169 1.2.2.2 jym ld_sdmmc_start(struct ld_softc *ld, struct buf *bp) 170 1.2.2.2 jym { 171 1.2.2.2 jym struct ld_sdmmc_softc *sc = device_private(ld->sc_dv); 172 1.2.2.2 jym struct ld_sdmmc_task *task = &sc->sc_task; 173 1.2.2.2 jym 174 1.2.2.2 jym task->task_sc = sc; 175 1.2.2.2 jym task->task_bp = bp; 176 1.2.2.2 jym sdmmc_init_task(&task->task, ld_sdmmc_dobio, task); 177 1.2.2.2 jym 178 1.2.2.2 jym callout_reset(&task->task_callout, hz, ld_sdmmc_timeout, task); 179 1.2.2.2 jym sdmmc_add_task(sc->sc_sf->sc, &task->task); 180 1.2.2.2 jym 181 1.2.2.2 jym return 0; 182 1.2.2.2 jym } 183 1.2.2.2 jym 184 1.2.2.2 jym static void 185 1.2.2.2 jym ld_sdmmc_dobio(void *arg) 186 1.2.2.2 jym { 187 1.2.2.2 jym struct ld_sdmmc_task *task = (struct ld_sdmmc_task *)arg; 188 1.2.2.2 jym struct ld_sdmmc_softc *sc = task->task_sc; 189 1.2.2.2 jym struct buf *bp = task->task_bp; 190 1.2.2.2 jym int error, s; 191 1.2.2.2 jym 192 1.2.2.2 jym callout_stop(&task->task_callout); 193 1.2.2.2 jym 194 1.2.2.2 jym /* 195 1.2.2.2 jym * I/O operation 196 1.2.2.2 jym */ 197 1.2.2.2 jym DPRINTF(("%s: I/O operation (dir=%s, blkno=0x%jx, bcnt=0x%x)\n", 198 1.2.2.2 jym device_xname(sc->sc_ld.sc_dv), bp->b_flags & B_READ ? "IN" : "OUT", 199 1.2.2.2 jym bp->b_rawblkno, bp->b_bcount)); 200 1.2.2.2 jym 201 1.2.2.2 jym /* is everything done in terms of blocks? */ 202 1.2.2.2 jym if (bp->b_rawblkno >= sc->sc_sf->csd.capacity) { 203 1.2.2.2 jym /* trying to read or write past end of device */ 204 1.2.2.2 jym DPRINTF(("%s: blkno exceeds capacity 0x%x\n", 205 1.2.2.2 jym device_xname(sc->sc_ld.sc_dv), sc->sc_sf->csd.capacity)); 206 1.2.2.2 jym bp->b_error = EIO; /* XXX */ 207 1.2.2.2 jym bp->b_resid = bp->b_bcount; 208 1.2.2.2 jym lddone(&sc->sc_ld, bp); 209 1.2.2.2 jym return; 210 1.2.2.2 jym } 211 1.2.2.2 jym 212 1.2.2.2 jym s = splbio(); 213 1.2.2.2 jym if (bp->b_flags & B_READ) 214 1.2.2.2 jym error = sdmmc_mem_read_block(sc->sc_sf, bp->b_rawblkno, 215 1.2.2.2 jym bp->b_data, bp->b_bcount); 216 1.2.2.2 jym else 217 1.2.2.2 jym error = sdmmc_mem_write_block(sc->sc_sf, bp->b_rawblkno, 218 1.2.2.2 jym bp->b_data, bp->b_bcount); 219 1.2.2.2 jym if (error) { 220 1.2.2.2 jym DPRINTF(("%s: error %d\n", device_xname(sc->sc_ld.sc_dv), 221 1.2.2.2 jym error)); 222 1.2.2.2 jym bp->b_error = EIO; /* XXXX */ 223 1.2.2.2 jym bp->b_resid = bp->b_bcount; 224 1.2.2.2 jym } else { 225 1.2.2.2 jym bp->b_resid = 0; 226 1.2.2.2 jym } 227 1.2.2.2 jym splx(s); 228 1.2.2.2 jym 229 1.2.2.2 jym lddone(&sc->sc_ld, bp); 230 1.2.2.2 jym } 231 1.2.2.2 jym 232 1.2.2.2 jym static void 233 1.2.2.2 jym ld_sdmmc_timeout(void *arg) 234 1.2.2.2 jym { 235 1.2.2.2 jym struct ld_sdmmc_task *task = (struct ld_sdmmc_task *)arg; 236 1.2.2.2 jym struct ld_sdmmc_softc *sc = task->task_sc; 237 1.2.2.2 jym struct buf *bp = task->task_bp; 238 1.2.2.2 jym int s; 239 1.2.2.2 jym 240 1.2.2.2 jym s = splbio(); 241 1.2.2.2 jym if (!sdmmc_task_pending(&task->task)) { 242 1.2.2.2 jym splx(s); 243 1.2.2.2 jym return; 244 1.2.2.2 jym } 245 1.2.2.2 jym bp->b_error = EIO; /* XXXX */ 246 1.2.2.2 jym bp->b_resid = bp->b_bcount; 247 1.2.2.2 jym sdmmc_del_task(&task->task); 248 1.2.2.2 jym splx(s); 249 1.2.2.2 jym 250 1.2.2.2 jym lddone(&sc->sc_ld, bp); 251 1.2.2.2 jym } 252 1.2.2.2 jym 253 1.2.2.2 jym static int 254 1.2.2.2 jym ld_sdmmc_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 255 1.2.2.2 jym { 256 1.2.2.2 jym struct ld_sdmmc_softc *sc = device_private(ld->sc_dv); 257 1.2.2.2 jym 258 1.2.2.2 jym return sdmmc_mem_write_block(sc->sc_sf, blkno, data, 259 1.2.2.2 jym blkcnt * ld->sc_secsize); 260 1.2.2.2 jym } 261
Indexes created Tue Oct 28 02:10:10 GMT 2025