sys/cam/mmc/mmc_da.c

   1 /*-
   2  * Copyright (c) 2006 Bernd Walter <tisco@FreeBSD.org>
   3  * Copyright (c) 2006 M. Warner Losh <imp@FreeBSD.org>
   4  * Copyright (c) 2009 Alexander Motin <mav@FreeBSD.org>
   5  * Copyright (c) 2015-2017 Ilya Bakulin <kibab@FreeBSD.org>
   6  * All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  * 1. Redistributions of source code must retain the above copyright
  12  *    notice, this list of conditions and the following disclaimer,
  13  *    without modification, immediately at the beginning of the file.
  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  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  20  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  21  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  22  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  23  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  24  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  27  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  * Some code derived from the sys/dev/mmc and sys/cam/ata
  30  * Thanks to Warner Losh <imp@FreeBSD.org>, Alexander Motin <mav@FreeBSD.org>
  31  * Bernd Walter <tisco@FreeBSD.org>, and other authors.
  32  */
  33
  34 #include <sys/cdefs.h>
  35 __FBSDID("$FreeBSD$");
  36
  37 //#include "opt_sdda.h"
  38
  39 #include <sys/param.h>
  40
  41 #ifdef _KERNEL
  42 #include <sys/systm.h>
  43 #include <sys/kernel.h>
  44 #include <sys/bio.h>
  45 #include <sys/endian.h>
  46 #include <sys/taskqueue.h>
  47 #include <sys/lock.h>
  48 #include <sys/mutex.h>
  49 #include <sys/conf.h>
  50 #include <sys/devicestat.h>
  51 #include <sys/eventhandler.h>
  52 #include <sys/malloc.h>
  53 #include <sys/cons.h>
  54 #include <sys/proc.h>
  55 #include <sys/reboot.h>
  56 #include <geom/geom_disk.h>
  57 #include <machine/_inttypes.h>  /* for PRIu64 */
  58 #endif /* _KERNEL */
  59
  60 #ifndef _KERNEL
  61 #include <stdio.h>
  62 #include <string.h>
  63 #endif /* _KERNEL */
  64
  65 #include <cam/cam.h>
  66 #include <cam/cam_ccb.h>
  67 #include <cam/cam_queue.h>
  68 #include <cam/cam_periph.h>
  69 #include <cam/cam_sim.h>
  70 #include <cam/cam_xpt.h>
  71 #include <cam/cam_xpt_sim.h>
  72 #include <cam/cam_xpt_periph.h>
  73 #include <cam/cam_xpt_internal.h>
  74 #include <cam/cam_debug.h>
  75
  76
  77 #include <cam/mmc/mmc_all.h>
  78
  79 #include <machine/md_var.h>     /* geometry translation */
  80
  81 #ifdef _KERNEL
  82
  83 typedef enum {
  84         SDDA_FLAG_OPEN          = 0x0002,
  85         SDDA_FLAG_DIRTY         = 0x0004
  86 } sdda_flags;
  87
  88 typedef enum {
  89         SDDA_STATE_INIT,
  90         SDDA_STATE_INVALID,
  91         SDDA_STATE_NORMAL
  92 } sdda_state;
  93
  94 struct sdda_softc {
  95         struct   bio_queue_head bio_queue;
  96         int      outstanding_cmds;      /* Number of active commands */
  97         int      refcount;              /* Active xpt_action() calls */
  98         sdda_state state;
  99         sdda_flags flags;
 100         struct mmc_data *mmcdata;
 101 //      sdda_quirks quirks;
 102         struct task start_init_task;
 103         struct   disk *disk;
 104         uint32_t raw_csd[4];
 105         uint8_t raw_ext_csd[512]; /* MMC only? */
 106         struct mmc_csd csd;
 107         struct mmc_cid cid;
 108         struct mmc_scr scr;
 109         /* Calculated from CSD */
 110         uint64_t sector_count;
 111         uint64_t mediasize;
 112
 113         /* Calculated from CID */
 114         char card_id_string[64];/* Formatted CID info (serial, MFG, etc) */
 115         char card_sn_string[16];/* Formatted serial # for disk->d_ident */
 116         /* Determined from CSD + is highspeed card*/
 117         uint32_t card_f_max;
 118 };
 119
 120 #define ccb_bp          ppriv_ptr1
 121
 122 static  disk_strategy_t sddastrategy;
 123 static  periph_init_t   sddainit;
 124 static  void            sddaasync(void *callback_arg, u_int32_t code,
 125                                 struct cam_path *path, void *arg);
 126 static  periph_ctor_t   sddaregister;
 127 static  periph_dtor_t   sddacleanup;
 128 static  periph_start_t  sddastart;
 129 static  periph_oninv_t  sddaoninvalidate;
 130 static  void            sddadone(struct cam_periph *periph,
 131                                union ccb *done_ccb);
 132 static  int             sddaerror(union ccb *ccb, u_int32_t cam_flags,
 133                                 u_int32_t sense_flags);
 134
 135 static uint16_t get_rca(struct cam_periph *periph);
 136 static cam_status sdda_hook_into_geom(struct cam_periph *periph);
 137 static void sdda_start_init(void *context, union ccb *start_ccb);
 138 static void sdda_start_init_task(void *context, int pending);
 139
 140 static struct periph_driver sddadriver =
 141 {
 142         sddainit, "sdda",
 143         TAILQ_HEAD_INITIALIZER(sddadriver.units), /* generation */ 0
 144 };
 145
 146 PERIPHDRIVER_DECLARE(sdda, sddadriver);
 147
 148 static MALLOC_DEFINE(M_SDDA, "sd_da", "sd_da buffers");
 149
 150 static const int exp[8] = {
 151         1, 10, 100, 1000, 10000, 100000, 1000000, 10000000
 152 };
 153
 154 static const int mant[16] = {
 155         0, 10, 12, 13, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60, 70, 80
 156 };
 157
 158 static const int cur_min[8] = {
 159         500, 1000, 5000, 10000, 25000, 35000, 60000, 100000
 160 };
 161
 162 static const int cur_max[8] = {
 163         1000, 5000, 10000, 25000, 35000, 45000, 800000, 200000
 164 };
 165
 166 static uint16_t
 167 get_rca(struct cam_periph *periph) {
 168         return periph->path->device->mmc_ident_data.card_rca;
 169 }
 170
 171 static uint32_t
 172 mmc_get_bits(uint32_t *bits, int bit_len, int start, int size)
 173 {
 174         const int i = (bit_len / 32) - (start / 32) - 1;
 175         const int shift = start & 31;
 176         uint32_t retval = bits[i] >> shift;
 177         if (size + shift > 32)
 178                 retval |= bits[i - 1] << (32 - shift);
 179         return (retval & ((1llu << size) - 1));
 180 }
 181
 182
 183 static void
 184 mmc_decode_csd_sd(uint32_t *raw_csd, struct mmc_csd *csd)
 185 {
 186         int v;
 187         int m;
 188         int e;
 189
 190         memset(csd, 0, sizeof(*csd));
 191         csd->csd_structure = v = mmc_get_bits(raw_csd, 128, 126, 2);
 192         if (v == 0) {
 193                 m = mmc_get_bits(raw_csd, 128, 115, 4);
 194                 e = mmc_get_bits(raw_csd, 128, 112, 3);
 195                 csd->tacc = (exp[e] * mant[m] + 9) / 10;
 196                 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
 197                 m = mmc_get_bits(raw_csd, 128, 99, 4);
 198                 e = mmc_get_bits(raw_csd, 128, 96, 3);
 199                 csd->tran_speed = exp[e] * 10000 * mant[m];
 200                 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
 201                 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
 202                 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
 203                 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
 204                 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
 205                 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
 206                 csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
 207                 csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
 208                 csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
 209                 csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
 210                 m = mmc_get_bits(raw_csd, 128, 62, 12);
 211                 e = mmc_get_bits(raw_csd, 128, 47, 3);
 212                 csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
 213                 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
 214                 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
 215                 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
 216                 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
 217                 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
 218                 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
 219                 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
 220         } else if (v == 1) {
 221                 m = mmc_get_bits(raw_csd, 128, 115, 4);
 222                 e = mmc_get_bits(raw_csd, 128, 112, 3);
 223                 csd->tacc = (exp[e] * mant[m] + 9) / 10;
 224                 csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
 225                 m = mmc_get_bits(raw_csd, 128, 99, 4);
 226                 e = mmc_get_bits(raw_csd, 128, 96, 3);
 227                 csd->tran_speed = exp[e] * 10000 * mant[m];
 228                 csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
 229                 csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
 230                 csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
 231                 csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
 232                 csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
 233                 csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
 234                 csd->capacity = ((uint64_t)mmc_get_bits(raw_csd, 128, 48, 22) + 1) *
 235                     512 * 1024;
 236                 csd->erase_blk_en = mmc_get_bits(raw_csd, 128, 46, 1);
 237                 csd->erase_sector = mmc_get_bits(raw_csd, 128, 39, 7) + 1;
 238                 csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 7);
 239                 csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
 240                 csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
 241                 csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
 242                 csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
 243         } else
 244                 panic("unknown SD CSD version");
 245 }
 246
 247 static void
 248 mmc_decode_csd_mmc(uint32_t *raw_csd, struct mmc_csd *csd)
 249 {
 250         int m;
 251         int e;
 252
 253         memset(csd, 0, sizeof(*csd));
 254         csd->csd_structure = mmc_get_bits(raw_csd, 128, 126, 2);
 255         csd->spec_vers = mmc_get_bits(raw_csd, 128, 122, 4);
 256         m = mmc_get_bits(raw_csd, 128, 115, 4);
 257         e = mmc_get_bits(raw_csd, 128, 112, 3);
 258         csd->tacc = exp[e] * mant[m] + 9 / 10;
 259         csd->nsac = mmc_get_bits(raw_csd, 128, 104, 8) * 100;
 260         m = mmc_get_bits(raw_csd, 128, 99, 4);
 261         e = mmc_get_bits(raw_csd, 128, 96, 3);
 262         csd->tran_speed = exp[e] * 10000 * mant[m];
 263         csd->ccc = mmc_get_bits(raw_csd, 128, 84, 12);
 264         csd->read_bl_len = 1 << mmc_get_bits(raw_csd, 128, 80, 4);
 265         csd->read_bl_partial = mmc_get_bits(raw_csd, 128, 79, 1);
 266         csd->write_blk_misalign = mmc_get_bits(raw_csd, 128, 78, 1);
 267         csd->read_blk_misalign = mmc_get_bits(raw_csd, 128, 77, 1);
 268         csd->dsr_imp = mmc_get_bits(raw_csd, 128, 76, 1);
 269         csd->vdd_r_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 59, 3)];
 270         csd->vdd_r_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 56, 3)];
 271         csd->vdd_w_curr_min = cur_min[mmc_get_bits(raw_csd, 128, 53, 3)];
 272         csd->vdd_w_curr_max = cur_max[mmc_get_bits(raw_csd, 128, 50, 3)];
 273         m = mmc_get_bits(raw_csd, 128, 62, 12);
 274         e = mmc_get_bits(raw_csd, 128, 47, 3);
 275         csd->capacity = ((1 + m) << (e + 2)) * csd->read_bl_len;
 276         csd->erase_blk_en = 0;
 277         csd->erase_sector = (mmc_get_bits(raw_csd, 128, 42, 5) + 1) *
 278             (mmc_get_bits(raw_csd, 128, 37, 5) + 1);
 279         csd->wp_grp_size = mmc_get_bits(raw_csd, 128, 32, 5);
 280         csd->wp_grp_enable = mmc_get_bits(raw_csd, 128, 31, 1);
 281         csd->r2w_factor = 1 << mmc_get_bits(raw_csd, 128, 26, 3);
 282         csd->write_bl_len = 1 << mmc_get_bits(raw_csd, 128, 22, 4);
 283         csd->write_bl_partial = mmc_get_bits(raw_csd, 128, 21, 1);
 284 }
 285
 286 static void
 287 mmc_decode_cid_sd(uint32_t *raw_cid, struct mmc_cid *cid)
 288 {
 289         int i;
 290
 291         /* There's no version info, so we take it on faith */
 292         memset(cid, 0, sizeof(*cid));
 293         cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
 294         cid->oid = mmc_get_bits(raw_cid, 128, 104, 16);
 295         for (i = 0; i < 5; i++)
 296                 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
 297         cid->pnm[5] = 0;
 298         cid->prv = mmc_get_bits(raw_cid, 128, 56, 8);
 299         cid->psn = mmc_get_bits(raw_cid, 128, 24, 32);
 300         cid->mdt_year = mmc_get_bits(raw_cid, 128, 12, 8) + 2000;
 301         cid->mdt_month = mmc_get_bits(raw_cid, 128, 8, 4);
 302 }
 303
 304 static void
 305 mmc_decode_cid_mmc(uint32_t *raw_cid, struct mmc_cid *cid)
 306 {
 307         int i;
 308
 309         /* There's no version info, so we take it on faith */
 310         memset(cid, 0, sizeof(*cid));
 311         cid->mid = mmc_get_bits(raw_cid, 128, 120, 8);
 312         cid->oid = mmc_get_bits(raw_cid, 128, 104, 8);
 313         for (i = 0; i < 6; i++)
 314                 cid->pnm[i] = mmc_get_bits(raw_cid, 128, 96 - i * 8, 8);
 315         cid->pnm[6] = 0;
 316         cid->prv = mmc_get_bits(raw_cid, 128, 48, 8);
 317         cid->psn = mmc_get_bits(raw_cid, 128, 16, 32);
 318         cid->mdt_month = mmc_get_bits(raw_cid, 128, 12, 4);
 319         cid->mdt_year = mmc_get_bits(raw_cid, 128, 8, 4) + 1997;
 320 }
 321
 322 static void
 323 mmc_format_card_id_string(struct sdda_softc *sc, struct mmc_params *mmcp)
 324 {
 325         char oidstr[8];
 326         uint8_t c1;
 327         uint8_t c2;
 328
 329         /*
 330          * Format a card ID string for use by the mmcsd driver, it's what
 331          * appears between the <> in the following:
 332          * mmcsd0: 968MB <SD SD01G 8.0 SN 2686905 Mfg 08/2008 by 3 TN> at mmc0
 333          * 22.5MHz/4bit/128-block
 334          *
 335          * Also format just the card serial number, which the mmcsd driver will
 336          * use as the disk->d_ident string.
 337          *
 338          * The card_id_string in mmc_ivars is currently allocated as 64 bytes,
 339          * and our max formatted length is currently 55 bytes if every field
 340          * contains the largest value.
 341          *
 342          * Sometimes the oid is two printable ascii chars; when it's not,
 343          * format it as 0xnnnn instead.
 344          */
 345         c1 = (sc->cid.oid >> 8) & 0x0ff;
 346         c2 = sc->cid.oid & 0x0ff;
 347         if (c1 > 0x1f && c1 < 0x7f && c2 > 0x1f && c2 < 0x7f)
 348                 snprintf(oidstr, sizeof(oidstr), "%c%c", c1, c2);
 349         else
 350                 snprintf(oidstr, sizeof(oidstr), "0x%04x", sc->cid.oid);
 351         snprintf(sc->card_sn_string, sizeof(sc->card_sn_string),
 352             "%08X", sc->cid.psn);
 353         snprintf(sc->card_id_string, sizeof(sc->card_id_string),
 354                  "%s%s %s %d.%d SN %08X MFG %02d/%04d by %d %s",
 355                  mmcp->card_features & CARD_FEATURE_MMC ? "MMC" : "SD",
 356                  mmcp->card_features & CARD_FEATURE_SDHC ? "HC" : "",
 357                  sc->cid.pnm, sc->cid.prv >> 4, sc->cid.prv & 0x0f,
 358                  sc->cid.psn, sc->cid.mdt_month, sc->cid.mdt_year,
 359                  sc->cid.mid, oidstr);
 360 }
 361
 362 static int
 363 sddaopen(struct disk *dp)
 364 {
 365         struct cam_periph *periph;
 366         struct sdda_softc *softc;
 367         int error;
 368
 369         periph = (struct cam_periph *)dp->d_drv1;
 370         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 371                 return(ENXIO);
 372         }
 373
 374         cam_periph_lock(periph);
 375         if ((error = cam_periph_hold(periph, PRIBIO|PCATCH)) != 0) {
 376                 cam_periph_unlock(periph);
 377                 cam_periph_release(periph);
 378                 return (error);
 379         }
 380
 381         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddaopen\n"));
 382
 383         softc = (struct sdda_softc *)periph->softc;
 384         softc->flags |= SDDA_FLAG_OPEN;
 385
 386         cam_periph_unhold(periph);
 387         cam_periph_unlock(periph);
 388         return (0);
 389 }
 390
 391 static int
 392 sddaclose(struct disk *dp)
 393 {
 394         struct  cam_periph *periph;
 395         struct  sdda_softc *softc;
 396 //      union ccb *ccb;
 397 //      int error;
 398
 399         periph = (struct cam_periph *)dp->d_drv1;
 400         softc = (struct sdda_softc *)periph->softc;
 401         softc->flags &= ~SDDA_FLAG_OPEN;
 402
 403         cam_periph_lock(periph);
 404
 405         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddaclose\n"));
 406
 407         while (softc->refcount != 0)
 408                 cam_periph_sleep(periph, &softc->refcount, PRIBIO, "sddaclose", 1);
 409         cam_periph_unlock(periph);
 410         cam_periph_release(periph);
 411         return (0);
 412 }
 413
 414 static void
 415 sddaschedule(struct cam_periph *periph)
 416 {
 417         struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
 418
 419         /* Check if we have more work to do. */
 420         if (bioq_first(&softc->bio_queue)) {
 421                 xpt_schedule(periph, CAM_PRIORITY_NORMAL);
 422         }
 423 }
 424
 425 /*
 426  * Actually translate the requested transfer into one the physical driver
 427  * can understand.  The transfer is described by a buf and will include
 428  * only one physical transfer.
 429  */
 430 static void
 431 sddastrategy(struct bio *bp)
 432 {
 433         struct cam_periph *periph;
 434         struct sdda_softc *softc;
 435
 436         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 437         softc = (struct sdda_softc *)periph->softc;
 438
 439         cam_periph_lock(periph);
 440
 441         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddastrategy(%p)\n", bp));
 442
 443         /*
 444          * If the device has been made invalid, error out
 445          */
 446         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
 447                 cam_periph_unlock(periph);
 448                 biofinish(bp, NULL, ENXIO);
 449                 return;
 450         }
 451
 452         /*
 453          * Place it in the queue of disk activities for this disk
 454          */
 455         bioq_disksort(&softc->bio_queue, bp);
 456
 457         /*
 458          * Schedule ourselves for performing the work.
 459          */
 460         sddaschedule(periph);
 461         cam_periph_unlock(periph);
 462
 463         return;
 464 }
 465
 466 static void
 467 sddainit(void)
 468 {
 469         cam_status status;
 470
 471         /*
 472          * Install a global async callback.  This callback will
 473          * receive async callbacks like "new device found".
 474          */
 475         status = xpt_register_async(AC_FOUND_DEVICE, sddaasync, NULL, NULL);
 476
 477         if (status != CAM_REQ_CMP) {
 478                 printf("sdda: Failed to attach master async callback "
 479                        "due to status 0x%x!\n", status);
 480         }
 481 }
 482
 483 /*
 484  * Callback from GEOM, called when it has finished cleaning up its
 485  * resources.
 486  */
 487 static void
 488 sddadiskgonecb(struct disk *dp)
 489 {
 490         struct cam_periph *periph;
 491
 492         periph = (struct cam_periph *)dp->d_drv1;
 493         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddadiskgonecb\n"));
 494
 495         cam_periph_release(periph);
 496 }
 497
 498 static void
 499 sddaoninvalidate(struct cam_periph *periph)
 500 {
 501         struct sdda_softc *softc;
 502
 503         softc = (struct sdda_softc *)periph->softc;
 504
 505         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddaoninvalidate\n"));
 506
 507         /*
 508          * De-register any async callbacks.
 509          */
 510         xpt_register_async(0, sddaasync, periph, periph->path);
 511
 512         /*
 513          * Return all queued I/O with ENXIO.
 514          * XXX Handle any transactions queued to the card
 515          *     with XPT_ABORT_CCB.
 516          */
 517         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("bioq_flush start\n"));
 518         bioq_flush(&softc->bio_queue, NULL, ENXIO);
 519         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("bioq_flush end\n"));
 520
 521         disk_gone(softc->disk);
 522 }
 523
 524 static void
 525 sddacleanup(struct cam_periph *periph)
 526 {
 527         struct sdda_softc *softc;
 528
 529         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddacleanup\n"));
 530         softc = (struct sdda_softc *)periph->softc;
 531
 532         cam_periph_unlock(periph);
 533
 534         disk_destroy(softc->disk);
 535         free(softc, M_DEVBUF);
 536         cam_periph_lock(periph);
 537 }
 538
 539 static void
 540 sddaasync(void *callback_arg, u_int32_t code,
 541         struct cam_path *path, void *arg)
 542 {
 543         struct ccb_getdev cgd;
 544         struct cam_periph *periph;
 545         struct sdda_softc *softc;
 546
 547         periph = (struct cam_periph *)callback_arg;
 548         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("sddaasync(code=%d)\n", code));
 549         switch (code) {
 550         case AC_FOUND_DEVICE:
 551         {
 552                 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> AC_FOUND_DEVICE\n"));
 553                 struct ccb_getdev *cgd;
 554                 cam_status status;
 555
 556                 cgd = (struct ccb_getdev *)arg;
 557                 if (cgd == NULL)
 558                         break;
 559
 560                 if (cgd->protocol != PROTO_MMCSD)
 561                         break;
 562
 563                 if (!(path->device->mmc_ident_data.card_features & CARD_FEATURE_MEMORY)) {
 564                         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("No memory on the card!\n"));
 565                         break;
 566                 }
 567
 568                 /*
 569                  * Allocate a peripheral instance for
 570                  * this device and start the probe
 571                  * process.
 572                  */
 573                 status = cam_periph_alloc(sddaregister, sddaoninvalidate,
 574                                           sddacleanup, sddastart,
 575                                           "sdda", CAM_PERIPH_BIO,
 576                                           path, sddaasync,
 577                                           AC_FOUND_DEVICE, cgd);
 578
 579                 if (status != CAM_REQ_CMP
 580                  && status != CAM_REQ_INPROG)
 581                         printf("sddaasync: Unable to attach to new device "
 582                                 "due to status 0x%x\n", status);
 583                 break;
 584         }
 585         case AC_GETDEV_CHANGED:
 586         {
 587                 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> AC_GETDEV_CHANGED\n"));
 588                 softc = (struct sdda_softc *)periph->softc;
 589                 xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NORMAL);
 590                 cgd.ccb_h.func_code = XPT_GDEV_TYPE;
 591                 xpt_action((union ccb *)&cgd);
 592                 cam_periph_async(periph, code, path, arg);
 593                 break;
 594         }
 595         case AC_ADVINFO_CHANGED:
 596         {
 597                 uintptr_t buftype;
 598                 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> AC_ADVINFO_CHANGED\n"));
 599                 buftype = (uintptr_t)arg;
 600                 if (buftype == CDAI_TYPE_PHYS_PATH) {
 601                         struct sdda_softc *softc;
 602
 603                         softc = periph->softc;
 604                         disk_attr_changed(softc->disk, "GEOM::physpath",
 605                                           M_NOWAIT);
 606                 }
 607                 break;
 608         }
 609         case AC_SENT_BDR:
 610         case AC_BUS_RESET:
 611         {
 612                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("AC_BUS_RESET"));
 613         }
 614         default:
 615                 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("=> default?!\n"));
 616                 cam_periph_async(periph, code, path, arg);
 617                 break;
 618         }
 619 }
 620
 621
 622 static int
 623 sddagetattr(struct bio *bp)
 624 {
 625         int ret;
 626         struct cam_periph *periph;
 627
 628         periph = (struct cam_periph *)bp->bio_disk->d_drv1;
 629         cam_periph_lock(periph);
 630         ret = xpt_getattr(bp->bio_data, bp->bio_length, bp->bio_attribute,
 631             periph->path);
 632         cam_periph_unlock(periph);
 633         if (ret == 0)
 634                 bp->bio_completed = bp->bio_length;
 635         return ret;
 636 }
 637
 638 static cam_status
 639 sddaregister(struct cam_periph *periph, void *arg)
 640 {
 641         struct sdda_softc *softc;
 642 //      struct ccb_pathinq cpi;
 643         struct ccb_getdev *cgd;
 644 //      char   announce_buf[80], buf1[32];
 645 //      caddr_t match;
 646         union ccb *request_ccb; /* CCB representing the probe request */
 647
 648         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddaregister\n"));
 649         cgd = (struct ccb_getdev *)arg;
 650         if (cgd == NULL) {
 651                 printf("sddaregister: no getdev CCB, can't register device\n");
 652                 return(CAM_REQ_CMP_ERR);
 653         }
 654
 655         softc = (struct sdda_softc *)malloc(sizeof(*softc), M_DEVBUF,
 656             M_NOWAIT|M_ZERO);
 657
 658         if (softc == NULL) {
 659                 printf("sddaregister: Unable to probe new device. "
 660                     "Unable to allocate softc\n");
 661                 return(CAM_REQ_CMP_ERR);
 662         }
 663
 664         bioq_init(&softc->bio_queue);
 665         softc->state = SDDA_STATE_INIT;
 666         softc->mmcdata =
 667                 (struct mmc_data *) malloc(sizeof(struct mmc_data), M_DEVBUF, M_NOWAIT|M_ZERO);
 668         periph->softc = softc;
 669
 670         request_ccb = (union ccb*) arg;
 671         xpt_schedule(periph, CAM_PRIORITY_XPT);
 672         TASK_INIT(&softc->start_init_task, 0, sdda_start_init_task, periph);
 673         taskqueue_enqueue(taskqueue_thread, &softc->start_init_task);
 674
 675         return (CAM_REQ_CMP);
 676 }
 677
 678 static cam_status
 679 sdda_hook_into_geom(struct cam_periph *periph)
 680 {
 681         struct sdda_softc *softc;
 682         struct ccb_pathinq cpi;
 683         struct ccb_getdev cgd;
 684         u_int maxio;
 685
 686         softc = (struct sdda_softc*) periph->softc;
 687
 688         bzero(&cpi, sizeof(cpi));
 689         xpt_setup_ccb(&cpi.ccb_h, periph->path, CAM_PRIORITY_NONE);
 690         cpi.ccb_h.func_code = XPT_PATH_INQ;
 691         xpt_action((union ccb *)&cpi);
 692
 693         bzero(&cgd, sizeof(cgd));
 694         xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NONE);
 695         cpi.ccb_h.func_code = XPT_GDEV_TYPE;
 696         xpt_action((union ccb *)&cgd);
 697
 698         /*
 699          * Register this media as a disk
 700          */
 701         (void)cam_periph_hold(periph, PRIBIO);
 702         cam_periph_unlock(periph);
 703
 704         softc->disk = disk_alloc();
 705         softc->disk->d_rotation_rate = 0;
 706         softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
 707                           periph->unit_number, 512,
 708                           DEVSTAT_ALL_SUPPORTED,
 709                           DEVSTAT_TYPE_DIRECT |
 710                           XPORT_DEVSTAT_TYPE(cpi.transport),
 711                           DEVSTAT_PRIORITY_DISK);
 712         softc->disk->d_open = sddaopen;
 713         softc->disk->d_close = sddaclose;
 714         softc->disk->d_strategy = sddastrategy;
 715         softc->disk->d_getattr = sddagetattr;
 716 //      softc->disk->d_dump = sddadump;
 717         softc->disk->d_gone = sddadiskgonecb;
 718         softc->disk->d_name = "sdda";
 719         softc->disk->d_drv1 = periph;
 720         maxio = cpi.maxio;              /* Honor max I/O size of SIM */
 721         if (maxio == 0)
 722                 maxio = DFLTPHYS;       /* traditional default */
 723         else if (maxio > MAXPHYS)
 724                 maxio = MAXPHYS;        /* for safety */
 725         softc->disk->d_maxsize = maxio;
 726         softc->disk->d_unit = periph->unit_number;
 727         softc->disk->d_flags = DISKFLAG_CANDELETE;
 728         strlcpy(softc->disk->d_descr, softc->card_id_string,
 729             MIN(sizeof(softc->disk->d_descr), sizeof(softc->card_id_string)));
 730         strlcpy(softc->disk->d_ident, softc->card_sn_string,
 731             MIN(sizeof(softc->disk->d_ident), sizeof(softc->card_sn_string)));
 732         softc->disk->d_hba_vendor = cpi.hba_vendor;
 733         softc->disk->d_hba_device = cpi.hba_device;
 734         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
 735         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
 736
 737         softc->disk->d_sectorsize = 512;
 738         softc->disk->d_mediasize = softc->mediasize;
 739         softc->disk->d_stripesize = 0;
 740         softc->disk->d_fwsectors = 0;
 741         softc->disk->d_fwheads = 0;
 742
 743         /*
 744          * Acquire a reference to the periph before we register with GEOM.
 745          * We'll release this reference once GEOM calls us back (via
 746          * sddadiskgonecb()) telling us that our provider has been freed.
 747          */
 748         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 749                 xpt_print(periph->path, "%s: lost periph during "
 750                           "registration!\n", __func__);
 751                 cam_periph_lock(periph);
 752                 return (CAM_REQ_CMP_ERR);
 753         }
 754         disk_create(softc->disk, DISK_VERSION);
 755         cam_periph_lock(periph);
 756         cam_periph_unhold(periph);
 757
 758         xpt_announce_periph(periph, softc->card_id_string);
 759
 760         /*
 761          * Add async callbacks for bus reset and
 762          * bus device reset calls.  I don't bother
 763          * checking if this fails as, in most cases,
 764          * the system will function just fine without
 765          * them and the only alternative would be to
 766          * not attach the device on failure.
 767          */
 768         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
 769             AC_GETDEV_CHANGED | AC_ADVINFO_CHANGED,
 770             sddaasync, periph, periph->path);
 771
 772         return(CAM_REQ_CMP);
 773 }
 774
 775 static int
 776 mmc_exec_app_cmd(struct cam_periph *periph, union ccb *ccb,
 777         struct mmc_command *cmd) {
 778         int err;
 779
 780         /* Send APP_CMD first */
 781         memset(&ccb->mmcio.cmd, 0, sizeof(struct mmc_command));
 782         memset(&ccb->mmcio.stop, 0, sizeof(struct mmc_command));
 783         cam_fill_mmcio(&ccb->mmcio,
 784                        /*retries*/ 0,
 785                        /*cbfcnp*/ NULL,
 786                        /*flags*/ CAM_DIR_NONE,
 787                        /*mmc_opcode*/ MMC_APP_CMD,
 788                        /*mmc_arg*/ get_rca(periph) << 16,
 789                        /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_AC,
 790                        /*mmc_data*/ NULL,
 791                        /*timeout*/ 0);
 792
 793         err = cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 794         if (err != 0)
 795                 return err;
 796         if (!(ccb->mmcio.cmd.resp[0] & R1_APP_CMD))
 797                 return MMC_ERR_FAILED;
 798
 799         /* Now exec actual command */
 800         int flags = 0;
 801         if (cmd->data != NULL) {
 802                 ccb->mmcio.cmd.data = cmd->data;
 803                 if (cmd->data->flags & MMC_DATA_READ)
 804                         flags |= CAM_DIR_IN;
 805                 if (cmd->data->flags & MMC_DATA_WRITE)
 806                         flags |= CAM_DIR_OUT;
 807         } else flags = CAM_DIR_NONE;
 808
 809         cam_fill_mmcio(&ccb->mmcio,
 810                        /*retries*/ 0,
 811                        /*cbfcnp*/ NULL,
 812                        /*flags*/ flags,
 813                        /*mmc_opcode*/ cmd->opcode,
 814                        /*mmc_arg*/ cmd->arg,
 815                        /*mmc_flags*/ cmd->flags,
 816                        /*mmc_data*/ cmd->data,
 817                        /*timeout*/ 0);
 818
 819         err = cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 820         memcpy(cmd->resp, ccb->mmcio.cmd.resp, sizeof(cmd->resp));
 821         cmd->error = ccb->mmcio.cmd.error;
 822         if (err != 0)
 823                 return err;
 824         return 0;
 825 }
 826
 827 static int
 828 mmc_app_get_scr(struct cam_periph *periph, union ccb *ccb, uint32_t *rawscr) {
 829         int err;
 830         struct mmc_command cmd;
 831         struct mmc_data d;
 832
 833         memset(&cmd, 0, sizeof(cmd));
 834
 835         memset(rawscr, 0, 8);
 836         cmd.opcode = ACMD_SEND_SCR;
 837         cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
 838         cmd.arg = 0;
 839
 840         d.data = rawscr;
 841         d.len = 8;
 842         d.flags = MMC_DATA_READ;
 843         cmd.data = &d;
 844
 845         err = mmc_exec_app_cmd(periph, ccb, &cmd);
 846         rawscr[0] = be32toh(rawscr[0]);
 847         rawscr[1] = be32toh(rawscr[1]);
 848         return (err);
 849 }
 850
 851 static int
 852 mmc_send_ext_csd(struct cam_periph *periph, union ccb *ccb,
 853                  uint8_t *rawextcsd, size_t buf_len) {
 854         int err;
 855         struct mmc_data d;
 856
 857         KASSERT(buf_len == 512, ("Buffer for ext csd must be 512 bytes"));
 858         d.data = rawextcsd;
 859         d.len = buf_len;
 860         d.flags = MMC_DATA_READ;
 861         memset(d.data, 0, d.len);
 862
 863         cam_fill_mmcio(&ccb->mmcio,
 864                        /*retries*/ 0,
 865                        /*cbfcnp*/ NULL,
 866                        /*flags*/ CAM_DIR_IN,
 867                        /*mmc_opcode*/ MMC_SEND_EXT_CSD,
 868                        /*mmc_arg*/ 0,
 869                        /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_ADTC,
 870                        /*mmc_data*/ &d,
 871                        /*timeout*/ 0);
 872
 873         err = cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 874         if (err != 0)
 875                 return err;
 876         if (!(ccb->mmcio.cmd.resp[0] & R1_APP_CMD))
 877                 return MMC_ERR_FAILED;
 878
 879         return MMC_ERR_NONE;
 880 }
 881
 882 static void
 883 mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
 884 {
 885         unsigned int scr_struct;
 886
 887         memset(scr, 0, sizeof(*scr));
 888
 889         scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
 890         if (scr_struct != 0) {
 891                 printf("Unrecognised SCR structure version %d\n",
 892                     scr_struct);
 893                 return;
 894         }
 895         scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
 896         scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
 897 }
 898
 899 static int
 900 mmc_switch(struct cam_periph *periph, union ccb *ccb,
 901            uint8_t set, uint8_t index, uint8_t value)
 902 {
 903         int arg = (MMC_SWITCH_FUNC_WR << 24) |
 904             (index << 16) |
 905             (value << 8) |
 906             set;
 907         cam_fill_mmcio(&ccb->mmcio,
 908                        /*retries*/ 0,
 909                        /*cbfcnp*/ NULL,
 910                        /*flags*/ CAM_DIR_NONE,
 911                        /*mmc_opcode*/ MMC_SWITCH_FUNC,
 912                        /*mmc_arg*/ arg,
 913                        /*mmc_flags*/ MMC_RSP_R1B | MMC_CMD_AC,
 914                        /*mmc_data*/ NULL,
 915                        /*timeout*/ 0);
 916
 917         cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 918
 919         if (((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)) {
 920                 if (ccb->mmcio.cmd.error != 0) {
 921                         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_PERIPH,
 922                                   ("%s: MMC command failed", __func__));
 923                         return EIO;
 924                 }
 925                 return 0; /* Normal return */
 926         } else {
 927                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_PERIPH,
 928                           ("%s: CAM request failed\n", __func__));
 929                 return EIO;
 930         }
 931
 932 }
 933
 934 static int
 935 mmc_sd_switch(struct cam_periph *periph, union ccb *ccb,
 936               uint8_t mode, uint8_t grp, uint8_t value,
 937               uint8_t *res) {
 938
 939         struct mmc_data mmc_d;
 940
 941         memset(res, 0, 64);
 942         mmc_d.len = 64;
 943         mmc_d.data = res;
 944         mmc_d.flags = MMC_DATA_READ;
 945
 946         cam_fill_mmcio(&ccb->mmcio,
 947                        /*retries*/ 0,
 948                        /*cbfcnp*/ NULL,
 949                        /*flags*/ CAM_DIR_IN,
 950                        /*mmc_opcode*/ SD_SWITCH_FUNC,
 951                        /*mmc_arg*/ mode << 31,
 952                        /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_ADTC,
 953                        /*mmc_data*/ &mmc_d,
 954                        /*timeout*/ 0);
 955
 956         cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 957
 958         if (((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)) {
 959                 if (ccb->mmcio.cmd.error != 0) {
 960                         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_PERIPH,
 961                                   ("%s: MMC command failed", __func__));
 962                         return EIO;
 963                 }
 964                 return 0; /* Normal return */
 965         } else {
 966                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_PERIPH,
 967                           ("%s: CAM request failed\n", __func__));
 968                 return EIO;
 969         }
 970 }
 971
 972 static int
 973 mmc_set_timing(struct cam_periph *periph,
 974                union ccb *ccb,
 975                enum mmc_bus_timing timing)
 976 {
 977         u_char switch_res[64];
 978         int err;
 979         uint8_t value;
 980         struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
 981
 982         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
 983                   ("mmc_set_timing(timing=%d)", timing));
 984         switch (timing) {
 985         case bus_timing_normal:
 986                 value = 0;
 987                 break;
 988         case bus_timing_hs:
 989                 value = 1;
 990                 break;
 991         default:
 992                 return (MMC_ERR_INVALID);
 993         }
 994         if (mmcp->card_features & CARD_FEATURE_MMC) {
 995                 err = mmc_switch(periph, ccb, EXT_CSD_CMD_SET_NORMAL,
 996                                  EXT_CSD_HS_TIMING, value);
 997         } else {
 998                 err = mmc_sd_switch(periph, ccb, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1, value, switch_res);
 999         }
1000
1001         /* Set high-speed timing on the host */
1002         struct ccb_trans_settings_mmc *cts;
1003         cts = &ccb->cts.proto_specific.mmc;
1004         ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1005         ccb->ccb_h.flags = CAM_DIR_NONE;
1006         ccb->ccb_h.retry_count = 0;
1007         ccb->ccb_h.timeout = 100;
1008         ccb->ccb_h.cbfcnp = NULL;
1009         cts->ios.timing = timing;
1010         cts->ios_valid = MMC_BT;
1011         xpt_action(ccb);
1012
1013         return (err);
1014 }
1015
1016 static void
1017 sdda_start_init_task(void *context, int pending) {
1018         union ccb *new_ccb;
1019         struct cam_periph *periph;
1020
1021         periph = (struct cam_periph *)context;
1022         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_start_init_task\n"));
1023         new_ccb = xpt_alloc_ccb();
1024         xpt_setup_ccb(&new_ccb->ccb_h, periph->path,
1025                       CAM_PRIORITY_NONE);
1026
1027         cam_periph_lock(periph);
1028         sdda_start_init(context, new_ccb);
1029         cam_periph_unlock(periph);
1030         xpt_free_ccb(new_ccb);
1031 }
1032
1033 static void
1034 sdda_set_bus_width(struct cam_periph *periph, union ccb *ccb, int width) {
1035         struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1036         int err;
1037
1038         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_set_bus_width\n"));
1039
1040         /* First set for the card, then for the host */
1041         if (mmcp->card_features & CARD_FEATURE_MMC) {
1042                 uint8_t value;
1043                 switch (width) {
1044                 case bus_width_1:
1045                         value = EXT_CSD_BUS_WIDTH_1;
1046                         break;
1047                 case bus_width_4:
1048                         value = EXT_CSD_BUS_WIDTH_4;
1049                         break;
1050                 case bus_width_8:
1051                         value = EXT_CSD_BUS_WIDTH_8;
1052                         break;
1053                 default:
1054                         panic("Invalid bus width %d", width);
1055                 }
1056                 err = mmc_switch(periph, ccb, EXT_CSD_CMD_SET_NORMAL,
1057                                  EXT_CSD_BUS_WIDTH, value);
1058         } else {
1059                 /* For SD cards we send ACMD6 with the required bus width in arg */
1060                 struct mmc_command cmd;
1061                 memset(&cmd, 0, sizeof(struct mmc_command));
1062                 cmd.opcode = ACMD_SET_BUS_WIDTH;
1063                 cmd.arg = width;
1064                 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1065                 err = mmc_exec_app_cmd(periph, ccb, &cmd);
1066         }
1067
1068         if (err != MMC_ERR_NONE) {
1069                 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Error %d when setting bus width on the card\n", err));
1070                 return;
1071         }
1072         /* Now card is done, set the host to the same width */
1073         struct ccb_trans_settings_mmc *cts;
1074         cts = &ccb->cts.proto_specific.mmc;
1075         ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1076         ccb->ccb_h.flags = CAM_DIR_NONE;
1077         ccb->ccb_h.retry_count = 0;
1078         ccb->ccb_h.timeout = 100;
1079         ccb->ccb_h.cbfcnp = NULL;
1080         cts->ios.bus_width = width;
1081         cts->ios_valid = MMC_BW;
1082         xpt_action(ccb);
1083 }
1084
1085 static inline const char *bus_width_str(enum mmc_bus_width w) {
1086         switch (w) {
1087         case bus_width_1:
1088                 return "1-bit";
1089         case bus_width_4:
1090                 return "4-bit";
1091         case bus_width_8:
1092                 return "8-bit";
1093         }
1094 }
1095
1096 static void
1097 sdda_start_init(void *context, union ccb *start_ccb) {
1098         struct cam_periph *periph;
1099         periph = (struct cam_periph *)context;
1100         int err;
1101
1102         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_start_init\n"));
1103         /* periph was held for us when this task was enqueued */
1104         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
1105                 cam_periph_release(periph);
1106                 return;
1107         }
1108
1109         struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
1110         //struct ccb_mmcio *mmcio = &start_ccb->mmcio;
1111         struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1112         struct cam_ed *device = periph->path->device;
1113
1114         if (mmcp->card_features & CARD_FEATURE_MMC) {
1115                 mmc_decode_csd_mmc(mmcp->card_csd, &softc->csd);
1116                 mmc_decode_cid_mmc(mmcp->card_cid, &softc->cid);
1117                 if (softc->csd.spec_vers >= 4)
1118                         err = mmc_send_ext_csd(periph, start_ccb,
1119                                                (uint8_t *)&softc->raw_ext_csd,
1120                                                sizeof(softc->raw_ext_csd));
1121         } else {
1122                 mmc_decode_csd_sd(mmcp->card_csd, &softc->csd);
1123                 mmc_decode_cid_sd(mmcp->card_cid, &softc->cid);
1124         }
1125
1126         softc->sector_count = softc->csd.capacity / 512;
1127         softc->mediasize = softc->csd.capacity;
1128
1129         /* MMC >= 4.x have EXT_CSD that has its own opinion about capacity */
1130         if (softc->csd.spec_vers >= 4) {
1131                 uint32_t sec_count = softc->raw_ext_csd[EXT_CSD_SEC_CNT] +
1132                         (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
1133                         (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
1134                         (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1135                 if (sec_count != 0) {
1136                         softc->sector_count = sec_count;
1137                         softc->mediasize = softc->sector_count * 512;
1138                         /* FIXME: there should be a better name for this option...*/
1139                         mmcp->card_features |= CARD_FEATURE_SDHC;
1140                 }
1141
1142         }
1143         CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1144                   ("Capacity: %"PRIu64", sectors: %"PRIu64"\n",
1145                    softc->mediasize,
1146                    softc->sector_count));
1147         mmc_format_card_id_string(softc, mmcp);
1148
1149         /* Update info for CAM */
1150         device->serial_num_len = strlen(softc->card_sn_string);
1151         device->serial_num =
1152                 (u_int8_t *)malloc((device->serial_num_len + 1),
1153                                    M_CAMXPT, M_NOWAIT);
1154         strlcpy(device->serial_num, softc->card_sn_string, device->serial_num_len);
1155
1156         device->device_id_len = strlen(softc->card_id_string);
1157         device->device_id =
1158                 (u_int8_t *)malloc((device->device_id_len + 1),
1159                                    M_CAMXPT, M_NOWAIT);
1160         strlcpy(device->device_id, softc->card_id_string, device->device_id_len);
1161
1162         strlcpy(mmcp->model, softc->card_id_string, sizeof(mmcp->model));
1163
1164         /* Set the clock frequency that the card can handle */
1165         struct ccb_trans_settings_mmc *cts;
1166         cts = &start_ccb->cts.proto_specific.mmc;
1167
1168         /* First, get the host's max freq */
1169         start_ccb->ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1170         start_ccb->ccb_h.flags = CAM_DIR_NONE;
1171         start_ccb->ccb_h.retry_count = 0;
1172         start_ccb->ccb_h.timeout = 100;
1173         start_ccb->ccb_h.cbfcnp = NULL;
1174         xpt_action(start_ccb);
1175
1176         if (start_ccb->ccb_h.status != CAM_REQ_CMP)
1177                 panic("Cannot get max host freq");
1178         int host_f_max = cts->host_f_max;
1179         uint32_t host_caps = cts->host_caps;
1180         if (cts->ios.bus_width != bus_width_1)
1181                 panic("Bus width in ios is not 1-bit");
1182
1183         /* Now check if the card supports High-speed */
1184         softc->card_f_max = softc->csd.tran_speed;
1185
1186         if (host_caps & MMC_CAP_HSPEED) {
1187                 /* Find out if the card supports High speed timing */
1188                 if (mmcp->card_features & CARD_FEATURE_SD20) {
1189                         /* Get and decode SCR */
1190                         uint32_t rawscr;
1191                         uint8_t res[64];
1192                         if (mmc_app_get_scr(periph, start_ccb, &rawscr)) {
1193                                 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Cannot get SCR\n"));
1194                                 goto finish_hs_tests;
1195                         }
1196                         mmc_app_decode_scr(&rawscr, &softc->scr);
1197
1198                         if ((softc->scr.sda_vsn >= 1) && (softc->csd.ccc & (1<<10))) {
1199                                 mmc_sd_switch(periph, start_ccb, SD_SWITCH_MODE_CHECK,
1200                                               SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE, res);
1201                                 if (res[13] & 2) {
1202                                         CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Card supports HS\n"));
1203                                         softc->card_f_max = SD_HS_MAX;
1204                                 }
1205                         } else {
1206                                 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Not trying the switch\n"));
1207                                 goto finish_hs_tests;
1208                         }
1209                 }
1210
1211                 if (mmcp->card_features & CARD_FEATURE_MMC && softc->csd.spec_vers >= 4) {
1212                         if (softc->raw_ext_csd[EXT_CSD_CARD_TYPE]
1213                             & EXT_CSD_CARD_TYPE_HS_52)
1214                                 softc->card_f_max = MMC_TYPE_HS_52_MAX;
1215                         else if (softc->raw_ext_csd[EXT_CSD_CARD_TYPE]
1216                                  & EXT_CSD_CARD_TYPE_HS_26)
1217                                 softc->card_f_max = MMC_TYPE_HS_26_MAX;
1218                 }
1219         }
1220         int f_max;
1221 finish_hs_tests:
1222         f_max = min(host_f_max, softc->card_f_max);
1223         CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Set SD freq to %d MHz (min out of host f=%d MHz and card f=%d MHz)\n", f_max  / 1000000, host_f_max / 1000000, softc->card_f_max / 1000000));
1224
1225         start_ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1226         start_ccb->ccb_h.flags = CAM_DIR_NONE;
1227         start_ccb->ccb_h.retry_count = 0;
1228         start_ccb->ccb_h.timeout = 100;
1229         start_ccb->ccb_h.cbfcnp = NULL;
1230         cts->ios.clock = f_max;
1231         cts->ios_valid = MMC_CLK;
1232         xpt_action(start_ccb);
1233
1234         /* Set bus width */
1235         enum mmc_bus_width desired_bus_width = bus_width_1;
1236         enum mmc_bus_width max_host_bus_width =
1237                 (host_caps & MMC_CAP_8_BIT_DATA ? bus_width_8 :
1238                  host_caps & MMC_CAP_4_BIT_DATA ? bus_width_4 : bus_width_1);
1239         enum mmc_bus_width max_card_bus_width = bus_width_1;
1240         if (mmcp->card_features & CARD_FEATURE_SD20 &&
1241             softc->scr.bus_widths & SD_SCR_BUS_WIDTH_4)
1242                 max_card_bus_width = bus_width_4;
1243         /*
1244          * Unlike SD, MMC cards don't have any information about supported bus width...
1245          * So we need to perform read/write test to find out the width.
1246          */
1247         /* TODO: figure out bus width for MMC; use 8-bit for now (to test on BBB) */
1248         if (mmcp->card_features & CARD_FEATURE_MMC)
1249                 max_card_bus_width = bus_width_8;
1250
1251         desired_bus_width = min(max_host_bus_width, max_card_bus_width);
1252         CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1253                   ("Set bus width to %s (min of host %s and card %s)\n",
1254                    bus_width_str(desired_bus_width),
1255                    bus_width_str(max_host_bus_width),
1256                    bus_width_str(max_card_bus_width)));
1257         sdda_set_bus_width(periph, start_ccb, desired_bus_width);
1258
1259         if (f_max > 25000000) {
1260                 err = mmc_set_timing(periph, start_ccb, bus_timing_hs);
1261                 if (err != MMC_ERR_NONE)
1262                         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("Cannot switch card to high-speed mode"));
1263         }
1264         softc->state = SDDA_STATE_NORMAL;
1265         sdda_hook_into_geom(periph);
1266 }
1267
1268 /* Called with periph lock held! */
1269 static void
1270 sddastart(struct cam_periph *periph, union ccb *start_ccb)
1271 {
1272         struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
1273         struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1274
1275         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddastart\n"));
1276
1277         if (softc->state != SDDA_STATE_NORMAL) {
1278                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("device is not in SDDA_STATE_NORMAL yet"));
1279                 xpt_release_ccb(start_ccb);
1280                 return;
1281         }
1282         struct bio *bp;
1283
1284         /* Run regular command. */
1285         bp = bioq_first(&softc->bio_queue);
1286         if (bp == NULL) {
1287                 xpt_release_ccb(start_ccb);
1288                 return;
1289         }
1290         bioq_remove(&softc->bio_queue, bp);
1291
1292         switch (bp->bio_cmd) {
1293         case BIO_WRITE:
1294                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_WRITE\n"));
1295                 softc->flags |= SDDA_FLAG_DIRTY;
1296                 /* FALLTHROUGH */
1297         case BIO_READ:
1298         {
1299                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_READ\n"));
1300                 uint64_t blockno = bp->bio_pblkno;
1301                 uint16_t count = bp->bio_bcount / 512;
1302                 uint16_t opcode;
1303
1304                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("Block %"PRIu64" cnt %u\n", blockno, count));
1305
1306                 /* Construct new MMC command */
1307                 if (bp->bio_cmd == BIO_READ) {
1308                         if (count > 1)
1309                                 opcode = MMC_READ_MULTIPLE_BLOCK;
1310                         else
1311                                 opcode = MMC_READ_SINGLE_BLOCK;
1312                 } else {
1313                         if (count > 1)
1314                                 opcode = MMC_WRITE_MULTIPLE_BLOCK;
1315                         else
1316                                 opcode = MMC_WRITE_BLOCK;
1317                 }
1318
1319                 start_ccb->ccb_h.func_code = XPT_MMC_IO;
1320                 start_ccb->ccb_h.flags = (bp->bio_cmd == BIO_READ ? CAM_DIR_IN : CAM_DIR_OUT);
1321                 start_ccb->ccb_h.retry_count = 0;
1322                 start_ccb->ccb_h.timeout = 15 * 1000;
1323                 start_ccb->ccb_h.cbfcnp = sddadone;
1324                 struct ccb_mmcio *mmcio;
1325
1326                 mmcio = &start_ccb->mmcio;
1327                 mmcio->cmd.opcode = opcode;
1328                 mmcio->cmd.arg = blockno;
1329                 if (!(mmcp->card_features & CARD_FEATURE_SDHC))
1330                         mmcio->cmd.arg <<= 9;
1331
1332                 mmcio->cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1333                 mmcio->cmd.data = softc->mmcdata;
1334                 mmcio->cmd.data->data = bp->bio_data;
1335                 mmcio->cmd.data->len = 512 * count;
1336                 mmcio->cmd.data->flags = (bp->bio_cmd == BIO_READ ? MMC_DATA_READ : MMC_DATA_WRITE);
1337                 /* Direct h/w to issue CMD12 upon completion */
1338                 if (count > 1) {
1339                         mmcio->stop.opcode = MMC_STOP_TRANSMISSION;
1340                         mmcio->stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
1341                         mmcio->stop.arg = 0;
1342                 }
1343
1344                 break;
1345         }
1346         case BIO_FLUSH:
1347                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_FLUSH\n"));
1348                 sddaschedule(periph);
1349                 break;
1350         case BIO_DELETE:
1351                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_DELETE\n"));
1352                 sddaschedule(periph);
1353                 break;
1354         }
1355         start_ccb->ccb_h.ccb_bp = bp;
1356         softc->outstanding_cmds++;
1357         softc->refcount++;
1358         cam_periph_unlock(periph);
1359         xpt_action(start_ccb);
1360         cam_periph_lock(periph);
1361         softc->refcount--;
1362
1363         /* May have more work to do, so ensure we stay scheduled */
1364         sddaschedule(periph);
1365 }
1366
1367 static void
1368 sddadone(struct cam_periph *periph, union ccb *done_ccb)
1369 {
1370         struct sdda_softc *softc;
1371         struct ccb_mmcio *mmcio;
1372 //      struct ccb_getdev *cgd;
1373         struct cam_path *path;
1374 //      int state;
1375
1376         softc = (struct sdda_softc *)periph->softc;
1377         mmcio = &done_ccb->mmcio;
1378         path = done_ccb->ccb_h.path;
1379
1380         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("sddadone\n"));
1381
1382         struct bio *bp;
1383         int error = 0;
1384
1385 //        cam_periph_lock(periph);
1386         if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1387                 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("Error!!!\n"));
1388                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1389                         cam_release_devq(path,
1390                                          /*relsim_flags*/0,
1391                                          /*reduction*/0,
1392                                          /*timeout*/0,
1393                                          /*getcount_only*/0);
1394                 error = 5; /* EIO */
1395         } else {
1396                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1397                         panic("REQ_CMP with QFRZN");
1398                 error = 0;
1399         }
1400
1401
1402         bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1403         bp->bio_error = error;
1404         if (error != 0) {
1405                 bp->bio_resid = bp->bio_bcount;
1406                 bp->bio_flags |= BIO_ERROR;
1407         } else {
1408                 /* XXX: How many bytes remaining? */
1409                 bp->bio_resid = 0;
1410                 if (bp->bio_resid > 0)
1411                         bp->bio_flags |= BIO_ERROR;
1412         }
1413
1414         uint32_t card_status = mmcio->cmd.resp[0];
1415         CAM_DEBUG(path, CAM_DEBUG_TRACE,
1416                   ("Card status: %08x\n", R1_STATUS(card_status)));
1417         CAM_DEBUG(path, CAM_DEBUG_TRACE,
1418                   ("Current state: %d\n", R1_CURRENT_STATE(card_status)));
1419
1420         softc->outstanding_cmds--;
1421         xpt_release_ccb(done_ccb);
1422         biodone(bp);
1423 }
1424
1425 static int
1426 sddaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1427 {
1428         return(cam_periph_error(ccb, cam_flags, sense_flags, NULL));
1429 }
1430 #endif /* _KERNEL */