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         xpt_path_inq(&cpi, periph->path);
 689
 690         bzero(&cgd, sizeof(cgd));
 691         xpt_setup_ccb(&cgd.ccb_h, periph->path, CAM_PRIORITY_NONE);
 692         cpi.ccb_h.func_code = XPT_GDEV_TYPE;
 693         xpt_action((union ccb *)&cgd);
 694
 695         /*
 696          * Register this media as a disk
 697          */
 698         (void)cam_periph_hold(periph, PRIBIO);
 699         cam_periph_unlock(periph);
 700
 701         softc->disk = disk_alloc();
 702         softc->disk->d_rotation_rate = 0;
 703         softc->disk->d_devstat = devstat_new_entry(periph->periph_name,
 704                           periph->unit_number, 512,
 705                           DEVSTAT_ALL_SUPPORTED,
 706                           DEVSTAT_TYPE_DIRECT |
 707                           XPORT_DEVSTAT_TYPE(cpi.transport),
 708                           DEVSTAT_PRIORITY_DISK);
 709         softc->disk->d_open = sddaopen;
 710         softc->disk->d_close = sddaclose;
 711         softc->disk->d_strategy = sddastrategy;
 712         softc->disk->d_getattr = sddagetattr;
 713 //      softc->disk->d_dump = sddadump;
 714         softc->disk->d_gone = sddadiskgonecb;
 715         softc->disk->d_name = "sdda";
 716         softc->disk->d_drv1 = periph;
 717         maxio = cpi.maxio;              /* Honor max I/O size of SIM */
 718         if (maxio == 0)
 719                 maxio = DFLTPHYS;       /* traditional default */
 720         else if (maxio > MAXPHYS)
 721                 maxio = MAXPHYS;        /* for safety */
 722         softc->disk->d_maxsize = maxio;
 723         softc->disk->d_unit = periph->unit_number;
 724         softc->disk->d_flags = DISKFLAG_CANDELETE;
 725         strlcpy(softc->disk->d_descr, softc->card_id_string,
 726             MIN(sizeof(softc->disk->d_descr), sizeof(softc->card_id_string)));
 727         strlcpy(softc->disk->d_ident, softc->card_sn_string,
 728             MIN(sizeof(softc->disk->d_ident), sizeof(softc->card_sn_string)));
 729         softc->disk->d_hba_vendor = cpi.hba_vendor;
 730         softc->disk->d_hba_device = cpi.hba_device;
 731         softc->disk->d_hba_subvendor = cpi.hba_subvendor;
 732         softc->disk->d_hba_subdevice = cpi.hba_subdevice;
 733
 734         softc->disk->d_sectorsize = 512;
 735         softc->disk->d_mediasize = softc->mediasize;
 736         softc->disk->d_stripesize = 0;
 737         softc->disk->d_fwsectors = 0;
 738         softc->disk->d_fwheads = 0;
 739
 740         /*
 741          * Acquire a reference to the periph before we register with GEOM.
 742          * We'll release this reference once GEOM calls us back (via
 743          * sddadiskgonecb()) telling us that our provider has been freed.
 744          */
 745         if (cam_periph_acquire(periph) != CAM_REQ_CMP) {
 746                 xpt_print(periph->path, "%s: lost periph during "
 747                           "registration!\n", __func__);
 748                 cam_periph_lock(periph);
 749                 return (CAM_REQ_CMP_ERR);
 750         }
 751         disk_create(softc->disk, DISK_VERSION);
 752         cam_periph_lock(periph);
 753         cam_periph_unhold(periph);
 754
 755         xpt_announce_periph(periph, softc->card_id_string);
 756
 757         /*
 758          * Add async callbacks for bus reset and
 759          * bus device reset calls.  I don't bother
 760          * checking if this fails as, in most cases,
 761          * the system will function just fine without
 762          * them and the only alternative would be to
 763          * not attach the device on failure.
 764          */
 765         xpt_register_async(AC_SENT_BDR | AC_BUS_RESET | AC_LOST_DEVICE |
 766             AC_GETDEV_CHANGED | AC_ADVINFO_CHANGED,
 767             sddaasync, periph, periph->path);
 768
 769         return(CAM_REQ_CMP);
 770 }
 771
 772 static int
 773 mmc_exec_app_cmd(struct cam_periph *periph, union ccb *ccb,
 774         struct mmc_command *cmd) {
 775         int err;
 776
 777         /* Send APP_CMD first */
 778         memset(&ccb->mmcio.cmd, 0, sizeof(struct mmc_command));
 779         memset(&ccb->mmcio.stop, 0, sizeof(struct mmc_command));
 780         cam_fill_mmcio(&ccb->mmcio,
 781                        /*retries*/ 0,
 782                        /*cbfcnp*/ NULL,
 783                        /*flags*/ CAM_DIR_NONE,
 784                        /*mmc_opcode*/ MMC_APP_CMD,
 785                        /*mmc_arg*/ get_rca(periph) << 16,
 786                        /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_AC,
 787                        /*mmc_data*/ NULL,
 788                        /*timeout*/ 0);
 789
 790         err = cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 791         if (err != 0)
 792                 return err;
 793         if (!(ccb->mmcio.cmd.resp[0] & R1_APP_CMD))
 794                 return MMC_ERR_FAILED;
 795
 796         /* Now exec actual command */
 797         int flags = 0;
 798         if (cmd->data != NULL) {
 799                 ccb->mmcio.cmd.data = cmd->data;
 800                 if (cmd->data->flags & MMC_DATA_READ)
 801                         flags |= CAM_DIR_IN;
 802                 if (cmd->data->flags & MMC_DATA_WRITE)
 803                         flags |= CAM_DIR_OUT;
 804         } else flags = CAM_DIR_NONE;
 805
 806         cam_fill_mmcio(&ccb->mmcio,
 807                        /*retries*/ 0,
 808                        /*cbfcnp*/ NULL,
 809                        /*flags*/ flags,
 810                        /*mmc_opcode*/ cmd->opcode,
 811                        /*mmc_arg*/ cmd->arg,
 812                        /*mmc_flags*/ cmd->flags,
 813                        /*mmc_data*/ cmd->data,
 814                        /*timeout*/ 0);
 815
 816         err = cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 817         memcpy(cmd->resp, ccb->mmcio.cmd.resp, sizeof(cmd->resp));
 818         cmd->error = ccb->mmcio.cmd.error;
 819         if (err != 0)
 820                 return err;
 821         return 0;
 822 }
 823
 824 static int
 825 mmc_app_get_scr(struct cam_periph *periph, union ccb *ccb, uint32_t *rawscr) {
 826         int err;
 827         struct mmc_command cmd;
 828         struct mmc_data d;
 829
 830         memset(&cmd, 0, sizeof(cmd));
 831
 832         memset(rawscr, 0, 8);
 833         cmd.opcode = ACMD_SEND_SCR;
 834         cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
 835         cmd.arg = 0;
 836
 837         d.data = rawscr;
 838         d.len = 8;
 839         d.flags = MMC_DATA_READ;
 840         cmd.data = &d;
 841
 842         err = mmc_exec_app_cmd(periph, ccb, &cmd);
 843         rawscr[0] = be32toh(rawscr[0]);
 844         rawscr[1] = be32toh(rawscr[1]);
 845         return (err);
 846 }
 847
 848 static int
 849 mmc_send_ext_csd(struct cam_periph *periph, union ccb *ccb,
 850                  uint8_t *rawextcsd, size_t buf_len) {
 851         int err;
 852         struct mmc_data d;
 853
 854         KASSERT(buf_len == 512, ("Buffer for ext csd must be 512 bytes"));
 855         d.data = rawextcsd;
 856         d.len = buf_len;
 857         d.flags = MMC_DATA_READ;
 858         memset(d.data, 0, d.len);
 859
 860         cam_fill_mmcio(&ccb->mmcio,
 861                        /*retries*/ 0,
 862                        /*cbfcnp*/ NULL,
 863                        /*flags*/ CAM_DIR_IN,
 864                        /*mmc_opcode*/ MMC_SEND_EXT_CSD,
 865                        /*mmc_arg*/ 0,
 866                        /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_ADTC,
 867                        /*mmc_data*/ &d,
 868                        /*timeout*/ 0);
 869
 870         err = cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 871         if (err != 0)
 872                 return err;
 873         if (!(ccb->mmcio.cmd.resp[0] & R1_APP_CMD))
 874                 return MMC_ERR_FAILED;
 875
 876         return MMC_ERR_NONE;
 877 }
 878
 879 static void
 880 mmc_app_decode_scr(uint32_t *raw_scr, struct mmc_scr *scr)
 881 {
 882         unsigned int scr_struct;
 883
 884         memset(scr, 0, sizeof(*scr));
 885
 886         scr_struct = mmc_get_bits(raw_scr, 64, 60, 4);
 887         if (scr_struct != 0) {
 888                 printf("Unrecognised SCR structure version %d\n",
 889                     scr_struct);
 890                 return;
 891         }
 892         scr->sda_vsn = mmc_get_bits(raw_scr, 64, 56, 4);
 893         scr->bus_widths = mmc_get_bits(raw_scr, 64, 48, 4);
 894 }
 895
 896 static int
 897 mmc_switch(struct cam_periph *periph, union ccb *ccb,
 898            uint8_t set, uint8_t index, uint8_t value)
 899 {
 900         int arg = (MMC_SWITCH_FUNC_WR << 24) |
 901             (index << 16) |
 902             (value << 8) |
 903             set;
 904         cam_fill_mmcio(&ccb->mmcio,
 905                        /*retries*/ 0,
 906                        /*cbfcnp*/ NULL,
 907                        /*flags*/ CAM_DIR_NONE,
 908                        /*mmc_opcode*/ MMC_SWITCH_FUNC,
 909                        /*mmc_arg*/ arg,
 910                        /*mmc_flags*/ MMC_RSP_R1B | MMC_CMD_AC,
 911                        /*mmc_data*/ NULL,
 912                        /*timeout*/ 0);
 913
 914         cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 915
 916         if (((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)) {
 917                 if (ccb->mmcio.cmd.error != 0) {
 918                         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_PERIPH,
 919                                   ("%s: MMC command failed", __func__));
 920                         return EIO;
 921                 }
 922                 return 0; /* Normal return */
 923         } else {
 924                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_PERIPH,
 925                           ("%s: CAM request failed\n", __func__));
 926                 return EIO;
 927         }
 928
 929 }
 930
 931 static int
 932 mmc_sd_switch(struct cam_periph *periph, union ccb *ccb,
 933               uint8_t mode, uint8_t grp, uint8_t value,
 934               uint8_t *res) {
 935
 936         struct mmc_data mmc_d;
 937
 938         memset(res, 0, 64);
 939         mmc_d.len = 64;
 940         mmc_d.data = res;
 941         mmc_d.flags = MMC_DATA_READ;
 942
 943         cam_fill_mmcio(&ccb->mmcio,
 944                        /*retries*/ 0,
 945                        /*cbfcnp*/ NULL,
 946                        /*flags*/ CAM_DIR_IN,
 947                        /*mmc_opcode*/ SD_SWITCH_FUNC,
 948                        /*mmc_arg*/ mode << 31,
 949                        /*mmc_flags*/ MMC_RSP_R1 | MMC_CMD_ADTC,
 950                        /*mmc_data*/ &mmc_d,
 951                        /*timeout*/ 0);
 952
 953         cam_periph_runccb(ccb, sddaerror, CAM_FLAG_NONE, /*sense_flags*/0, NULL);
 954
 955         if (((ccb->ccb_h.status & CAM_STATUS_MASK) == CAM_REQ_CMP)) {
 956                 if (ccb->mmcio.cmd.error != 0) {
 957                         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_PERIPH,
 958                                   ("%s: MMC command failed", __func__));
 959                         return EIO;
 960                 }
 961                 return 0; /* Normal return */
 962         } else {
 963                 CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_PERIPH,
 964                           ("%s: CAM request failed\n", __func__));
 965                 return EIO;
 966         }
 967 }
 968
 969 static int
 970 mmc_set_timing(struct cam_periph *periph,
 971                union ccb *ccb,
 972                enum mmc_bus_timing timing)
 973 {
 974         u_char switch_res[64];
 975         int err;
 976         uint8_t value;
 977         struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
 978
 979         CAM_DEBUG(ccb->ccb_h.path, CAM_DEBUG_TRACE,
 980                   ("mmc_set_timing(timing=%d)", timing));
 981         switch (timing) {
 982         case bus_timing_normal:
 983                 value = 0;
 984                 break;
 985         case bus_timing_hs:
 986                 value = 1;
 987                 break;
 988         default:
 989                 return (MMC_ERR_INVALID);
 990         }
 991         if (mmcp->card_features & CARD_FEATURE_MMC) {
 992                 err = mmc_switch(periph, ccb, EXT_CSD_CMD_SET_NORMAL,
 993                                  EXT_CSD_HS_TIMING, value);
 994         } else {
 995                 err = mmc_sd_switch(periph, ccb, SD_SWITCH_MODE_SET, SD_SWITCH_GROUP1, value, switch_res);
 996         }
 997
 998         /* Set high-speed timing on the host */
 999         struct ccb_trans_settings_mmc *cts;
1000         cts = &ccb->cts.proto_specific.mmc;
1001         ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1002         ccb->ccb_h.flags = CAM_DIR_NONE;
1003         ccb->ccb_h.retry_count = 0;
1004         ccb->ccb_h.timeout = 100;
1005         ccb->ccb_h.cbfcnp = NULL;
1006         cts->ios.timing = timing;
1007         cts->ios_valid = MMC_BT;
1008         xpt_action(ccb);
1009
1010         return (err);
1011 }
1012
1013 static void
1014 sdda_start_init_task(void *context, int pending) {
1015         union ccb *new_ccb;
1016         struct cam_periph *periph;
1017
1018         periph = (struct cam_periph *)context;
1019         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_start_init_task\n"));
1020         new_ccb = xpt_alloc_ccb();
1021         xpt_setup_ccb(&new_ccb->ccb_h, periph->path,
1022                       CAM_PRIORITY_NONE);
1023
1024         cam_periph_lock(periph);
1025         sdda_start_init(context, new_ccb);
1026         cam_periph_unlock(periph);
1027         xpt_free_ccb(new_ccb);
1028 }
1029
1030 static void
1031 sdda_set_bus_width(struct cam_periph *periph, union ccb *ccb, int width) {
1032         struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1033         int err;
1034
1035         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_set_bus_width\n"));
1036
1037         /* First set for the card, then for the host */
1038         if (mmcp->card_features & CARD_FEATURE_MMC) {
1039                 uint8_t value;
1040                 switch (width) {
1041                 case bus_width_1:
1042                         value = EXT_CSD_BUS_WIDTH_1;
1043                         break;
1044                 case bus_width_4:
1045                         value = EXT_CSD_BUS_WIDTH_4;
1046                         break;
1047                 case bus_width_8:
1048                         value = EXT_CSD_BUS_WIDTH_8;
1049                         break;
1050                 default:
1051                         panic("Invalid bus width %d", width);
1052                 }
1053                 err = mmc_switch(periph, ccb, EXT_CSD_CMD_SET_NORMAL,
1054                                  EXT_CSD_BUS_WIDTH, value);
1055         } else {
1056                 /* For SD cards we send ACMD6 with the required bus width in arg */
1057                 struct mmc_command cmd;
1058                 memset(&cmd, 0, sizeof(struct mmc_command));
1059                 cmd.opcode = ACMD_SET_BUS_WIDTH;
1060                 cmd.arg = width;
1061                 cmd.flags = MMC_RSP_R1 | MMC_CMD_AC;
1062                 err = mmc_exec_app_cmd(periph, ccb, &cmd);
1063         }
1064
1065         if (err != MMC_ERR_NONE) {
1066                 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Error %d when setting bus width on the card\n", err));
1067                 return;
1068         }
1069         /* Now card is done, set the host to the same width */
1070         struct ccb_trans_settings_mmc *cts;
1071         cts = &ccb->cts.proto_specific.mmc;
1072         ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1073         ccb->ccb_h.flags = CAM_DIR_NONE;
1074         ccb->ccb_h.retry_count = 0;
1075         ccb->ccb_h.timeout = 100;
1076         ccb->ccb_h.cbfcnp = NULL;
1077         cts->ios.bus_width = width;
1078         cts->ios_valid = MMC_BW;
1079         xpt_action(ccb);
1080 }
1081
1082 static inline const char *bus_width_str(enum mmc_bus_width w) {
1083         switch (w) {
1084         case bus_width_1:
1085                 return "1-bit";
1086         case bus_width_4:
1087                 return "4-bit";
1088         case bus_width_8:
1089                 return "8-bit";
1090         }
1091 }
1092
1093 static void
1094 sdda_start_init(void *context, union ccb *start_ccb) {
1095         struct cam_periph *periph;
1096         periph = (struct cam_periph *)context;
1097         int err;
1098
1099         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sdda_start_init\n"));
1100         /* periph was held for us when this task was enqueued */
1101         if ((periph->flags & CAM_PERIPH_INVALID) != 0) {
1102                 cam_periph_release(periph);
1103                 return;
1104         }
1105
1106         struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
1107         //struct ccb_mmcio *mmcio = &start_ccb->mmcio;
1108         struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1109         struct cam_ed *device = periph->path->device;
1110
1111         if (mmcp->card_features & CARD_FEATURE_MMC) {
1112                 mmc_decode_csd_mmc(mmcp->card_csd, &softc->csd);
1113                 mmc_decode_cid_mmc(mmcp->card_cid, &softc->cid);
1114                 if (softc->csd.spec_vers >= 4)
1115                         err = mmc_send_ext_csd(periph, start_ccb,
1116                                                (uint8_t *)&softc->raw_ext_csd,
1117                                                sizeof(softc->raw_ext_csd));
1118         } else {
1119                 mmc_decode_csd_sd(mmcp->card_csd, &softc->csd);
1120                 mmc_decode_cid_sd(mmcp->card_cid, &softc->cid);
1121         }
1122
1123         softc->sector_count = softc->csd.capacity / 512;
1124         softc->mediasize = softc->csd.capacity;
1125
1126         /* MMC >= 4.x have EXT_CSD that has its own opinion about capacity */
1127         if (softc->csd.spec_vers >= 4) {
1128                 uint32_t sec_count = softc->raw_ext_csd[EXT_CSD_SEC_CNT] +
1129                         (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 1] << 8) +
1130                         (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 2] << 16) +
1131                         (softc->raw_ext_csd[EXT_CSD_SEC_CNT + 3] << 24);
1132                 if (sec_count != 0) {
1133                         softc->sector_count = sec_count;
1134                         softc->mediasize = softc->sector_count * 512;
1135                         /* FIXME: there should be a better name for this option...*/
1136                         mmcp->card_features |= CARD_FEATURE_SDHC;
1137                 }
1138
1139         }
1140         CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1141                   ("Capacity: %"PRIu64", sectors: %"PRIu64"\n",
1142                    softc->mediasize,
1143                    softc->sector_count));
1144         mmc_format_card_id_string(softc, mmcp);
1145
1146         /* Update info for CAM */
1147         device->serial_num_len = strlen(softc->card_sn_string);
1148         device->serial_num =
1149                 (u_int8_t *)malloc((device->serial_num_len + 1),
1150                                    M_CAMXPT, M_NOWAIT);
1151         strlcpy(device->serial_num, softc->card_sn_string, device->serial_num_len);
1152
1153         device->device_id_len = strlen(softc->card_id_string);
1154         device->device_id =
1155                 (u_int8_t *)malloc((device->device_id_len + 1),
1156                                    M_CAMXPT, M_NOWAIT);
1157         strlcpy(device->device_id, softc->card_id_string, device->device_id_len);
1158
1159         strlcpy(mmcp->model, softc->card_id_string, sizeof(mmcp->model));
1160
1161         /* Set the clock frequency that the card can handle */
1162         struct ccb_trans_settings_mmc *cts;
1163         cts = &start_ccb->cts.proto_specific.mmc;
1164
1165         /* First, get the host's max freq */
1166         start_ccb->ccb_h.func_code = XPT_GET_TRAN_SETTINGS;
1167         start_ccb->ccb_h.flags = CAM_DIR_NONE;
1168         start_ccb->ccb_h.retry_count = 0;
1169         start_ccb->ccb_h.timeout = 100;
1170         start_ccb->ccb_h.cbfcnp = NULL;
1171         xpt_action(start_ccb);
1172
1173         if (start_ccb->ccb_h.status != CAM_REQ_CMP)
1174                 panic("Cannot get max host freq");
1175         int host_f_max = cts->host_f_max;
1176         uint32_t host_caps = cts->host_caps;
1177         if (cts->ios.bus_width != bus_width_1)
1178                 panic("Bus width in ios is not 1-bit");
1179
1180         /* Now check if the card supports High-speed */
1181         softc->card_f_max = softc->csd.tran_speed;
1182
1183         if (host_caps & MMC_CAP_HSPEED) {
1184                 /* Find out if the card supports High speed timing */
1185                 if (mmcp->card_features & CARD_FEATURE_SD20) {
1186                         /* Get and decode SCR */
1187                         uint32_t rawscr;
1188                         uint8_t res[64];
1189                         if (mmc_app_get_scr(periph, start_ccb, &rawscr)) {
1190                                 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Cannot get SCR\n"));
1191                                 goto finish_hs_tests;
1192                         }
1193                         mmc_app_decode_scr(&rawscr, &softc->scr);
1194
1195                         if ((softc->scr.sda_vsn >= 1) && (softc->csd.ccc & (1<<10))) {
1196                                 mmc_sd_switch(periph, start_ccb, SD_SWITCH_MODE_CHECK,
1197                                               SD_SWITCH_GROUP1, SD_SWITCH_NOCHANGE, res);
1198                                 if (res[13] & 2) {
1199                                         CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Card supports HS\n"));
1200                                         softc->card_f_max = SD_HS_MAX;
1201                                 }
1202                         } else {
1203                                 CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH, ("Not trying the switch\n"));
1204                                 goto finish_hs_tests;
1205                         }
1206                 }
1207
1208                 if (mmcp->card_features & CARD_FEATURE_MMC && softc->csd.spec_vers >= 4) {
1209                         if (softc->raw_ext_csd[EXT_CSD_CARD_TYPE]
1210                             & EXT_CSD_CARD_TYPE_HS_52)
1211                                 softc->card_f_max = MMC_TYPE_HS_52_MAX;
1212                         else if (softc->raw_ext_csd[EXT_CSD_CARD_TYPE]
1213                                  & EXT_CSD_CARD_TYPE_HS_26)
1214                                 softc->card_f_max = MMC_TYPE_HS_26_MAX;
1215                 }
1216         }
1217         int f_max;
1218 finish_hs_tests:
1219         f_max = min(host_f_max, softc->card_f_max);
1220         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));
1221
1222         start_ccb->ccb_h.func_code = XPT_SET_TRAN_SETTINGS;
1223         start_ccb->ccb_h.flags = CAM_DIR_NONE;
1224         start_ccb->ccb_h.retry_count = 0;
1225         start_ccb->ccb_h.timeout = 100;
1226         start_ccb->ccb_h.cbfcnp = NULL;
1227         cts->ios.clock = f_max;
1228         cts->ios_valid = MMC_CLK;
1229         xpt_action(start_ccb);
1230
1231         /* Set bus width */
1232         enum mmc_bus_width desired_bus_width = bus_width_1;
1233         enum mmc_bus_width max_host_bus_width =
1234                 (host_caps & MMC_CAP_8_BIT_DATA ? bus_width_8 :
1235                  host_caps & MMC_CAP_4_BIT_DATA ? bus_width_4 : bus_width_1);
1236         enum mmc_bus_width max_card_bus_width = bus_width_1;
1237         if (mmcp->card_features & CARD_FEATURE_SD20 &&
1238             softc->scr.bus_widths & SD_SCR_BUS_WIDTH_4)
1239                 max_card_bus_width = bus_width_4;
1240         /*
1241          * Unlike SD, MMC cards don't have any information about supported bus width...
1242          * So we need to perform read/write test to find out the width.
1243          */
1244         /* TODO: figure out bus width for MMC; use 8-bit for now (to test on BBB) */
1245         if (mmcp->card_features & CARD_FEATURE_MMC)
1246                 max_card_bus_width = bus_width_8;
1247
1248         desired_bus_width = min(max_host_bus_width, max_card_bus_width);
1249         CAM_DEBUG(periph->path, CAM_DEBUG_PERIPH,
1250                   ("Set bus width to %s (min of host %s and card %s)\n",
1251                    bus_width_str(desired_bus_width),
1252                    bus_width_str(max_host_bus_width),
1253                    bus_width_str(max_card_bus_width)));
1254         sdda_set_bus_width(periph, start_ccb, desired_bus_width);
1255
1256         if (f_max > 25000000) {
1257                 err = mmc_set_timing(periph, start_ccb, bus_timing_hs);
1258                 if (err != MMC_ERR_NONE)
1259                         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("Cannot switch card to high-speed mode"));
1260         }
1261         softc->state = SDDA_STATE_NORMAL;
1262         sdda_hook_into_geom(periph);
1263 }
1264
1265 /* Called with periph lock held! */
1266 static void
1267 sddastart(struct cam_periph *periph, union ccb *start_ccb)
1268 {
1269         struct sdda_softc *softc = (struct sdda_softc *)periph->softc;
1270         struct mmc_params *mmcp = &periph->path->device->mmc_ident_data;
1271
1272         CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("sddastart\n"));
1273
1274         if (softc->state != SDDA_STATE_NORMAL) {
1275                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("device is not in SDDA_STATE_NORMAL yet"));
1276                 xpt_release_ccb(start_ccb);
1277                 return;
1278         }
1279         struct bio *bp;
1280
1281         /* Run regular command. */
1282         bp = bioq_first(&softc->bio_queue);
1283         if (bp == NULL) {
1284                 xpt_release_ccb(start_ccb);
1285                 return;
1286         }
1287         bioq_remove(&softc->bio_queue, bp);
1288
1289         switch (bp->bio_cmd) {
1290         case BIO_WRITE:
1291                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_WRITE\n"));
1292                 softc->flags |= SDDA_FLAG_DIRTY;
1293                 /* FALLTHROUGH */
1294         case BIO_READ:
1295         {
1296                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_READ\n"));
1297                 uint64_t blockno = bp->bio_pblkno;
1298                 uint16_t count = bp->bio_bcount / 512;
1299                 uint16_t opcode;
1300
1301                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("Block %"PRIu64" cnt %u\n", blockno, count));
1302
1303                 /* Construct new MMC command */
1304                 if (bp->bio_cmd == BIO_READ) {
1305                         if (count > 1)
1306                                 opcode = MMC_READ_MULTIPLE_BLOCK;
1307                         else
1308                                 opcode = MMC_READ_SINGLE_BLOCK;
1309                 } else {
1310                         if (count > 1)
1311                                 opcode = MMC_WRITE_MULTIPLE_BLOCK;
1312                         else
1313                                 opcode = MMC_WRITE_BLOCK;
1314                 }
1315
1316                 start_ccb->ccb_h.func_code = XPT_MMC_IO;
1317                 start_ccb->ccb_h.flags = (bp->bio_cmd == BIO_READ ? CAM_DIR_IN : CAM_DIR_OUT);
1318                 start_ccb->ccb_h.retry_count = 0;
1319                 start_ccb->ccb_h.timeout = 15 * 1000;
1320                 start_ccb->ccb_h.cbfcnp = sddadone;
1321                 struct ccb_mmcio *mmcio;
1322
1323                 mmcio = &start_ccb->mmcio;
1324                 mmcio->cmd.opcode = opcode;
1325                 mmcio->cmd.arg = blockno;
1326                 if (!(mmcp->card_features & CARD_FEATURE_SDHC))
1327                         mmcio->cmd.arg <<= 9;
1328
1329                 mmcio->cmd.flags = MMC_RSP_R1 | MMC_CMD_ADTC;
1330                 mmcio->cmd.data = softc->mmcdata;
1331                 mmcio->cmd.data->data = bp->bio_data;
1332                 mmcio->cmd.data->len = 512 * count;
1333                 mmcio->cmd.data->flags = (bp->bio_cmd == BIO_READ ? MMC_DATA_READ : MMC_DATA_WRITE);
1334                 /* Direct h/w to issue CMD12 upon completion */
1335                 if (count > 1) {
1336                         mmcio->stop.opcode = MMC_STOP_TRANSMISSION;
1337                         mmcio->stop.flags = MMC_RSP_R1B | MMC_CMD_AC;
1338                         mmcio->stop.arg = 0;
1339                 }
1340
1341                 break;
1342         }
1343         case BIO_FLUSH:
1344                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_FLUSH\n"));
1345                 sddaschedule(periph);
1346                 break;
1347         case BIO_DELETE:
1348                 CAM_DEBUG(periph->path, CAM_DEBUG_TRACE, ("BIO_DELETE\n"));
1349                 sddaschedule(periph);
1350                 break;
1351         }
1352         start_ccb->ccb_h.ccb_bp = bp;
1353         softc->outstanding_cmds++;
1354         softc->refcount++;
1355         cam_periph_unlock(periph);
1356         xpt_action(start_ccb);
1357         cam_periph_lock(periph);
1358         softc->refcount--;
1359
1360         /* May have more work to do, so ensure we stay scheduled */
1361         sddaschedule(periph);
1362 }
1363
1364 static void
1365 sddadone(struct cam_periph *periph, union ccb *done_ccb)
1366 {
1367         struct sdda_softc *softc;
1368         struct ccb_mmcio *mmcio;
1369 //      struct ccb_getdev *cgd;
1370         struct cam_path *path;
1371 //      int state;
1372
1373         softc = (struct sdda_softc *)periph->softc;
1374         mmcio = &done_ccb->mmcio;
1375         path = done_ccb->ccb_h.path;
1376
1377         CAM_DEBUG(path, CAM_DEBUG_TRACE, ("sddadone\n"));
1378
1379         struct bio *bp;
1380         int error = 0;
1381
1382 //        cam_periph_lock(periph);
1383         if ((done_ccb->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_CMP) {
1384                 CAM_DEBUG(path, CAM_DEBUG_TRACE, ("Error!!!\n"));
1385                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1386                         cam_release_devq(path,
1387                                          /*relsim_flags*/0,
1388                                          /*reduction*/0,
1389                                          /*timeout*/0,
1390                                          /*getcount_only*/0);
1391                 error = 5; /* EIO */
1392         } else {
1393                 if ((done_ccb->ccb_h.status & CAM_DEV_QFRZN) != 0)
1394                         panic("REQ_CMP with QFRZN");
1395                 error = 0;
1396         }
1397
1398
1399         bp = (struct bio *)done_ccb->ccb_h.ccb_bp;
1400         bp->bio_error = error;
1401         if (error != 0) {
1402                 bp->bio_resid = bp->bio_bcount;
1403                 bp->bio_flags |= BIO_ERROR;
1404         } else {
1405                 /* XXX: How many bytes remaining? */
1406                 bp->bio_resid = 0;
1407                 if (bp->bio_resid > 0)
1408                         bp->bio_flags |= BIO_ERROR;
1409         }
1410
1411         uint32_t card_status = mmcio->cmd.resp[0];
1412         CAM_DEBUG(path, CAM_DEBUG_TRACE,
1413                   ("Card status: %08x\n", R1_STATUS(card_status)));
1414         CAM_DEBUG(path, CAM_DEBUG_TRACE,
1415                   ("Current state: %d\n", R1_CURRENT_STATE(card_status)));
1416
1417         softc->outstanding_cmds--;
1418         xpt_release_ccb(done_ccb);
1419         biodone(bp);
1420 }
1421
1422 static int
1423 sddaerror(union ccb *ccb, u_int32_t cam_flags, u_int32_t sense_flags)
1424 {
1425         return(cam_periph_error(ccb, cam_flags, sense_flags));
1426 }
1427 #endif /* _KERNEL */