sys/dev/sbus/isp_sbus.c

   1 /* $NetBSD: isp_sbus.c,v 1.78 2009/09/07 13:39:19 tsutsui Exp $ */
   2 /*
   3  * SBus specific probe and attach routines for Qlogic ISP SCSI adapters.
   4  *
   5  * Copyright (C) 1997, 1998, 1999 National Aeronautics & Space Administration
   6  * All rights reserved.
   7  *
   8  * Additional Copyright (C) 2000-2007 by Matthew Jacob
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  * 3. The name of the author may not be used to endorse or promote products
  20  *    derived from this software without specific prior written permission
  21  *
  22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  *
  33  */
  34
  35 #include <sys/cdefs.h>
  36 __KERNEL_RCSID(0, "$NetBSD: isp_sbus.c,v 1.78 2009/09/07 13:39:19 tsutsui Exp $");
  37
  38 #include <sys/param.h>
  39 #include <sys/systm.h>
  40 #include <sys/device.h>
  41 #include <sys/kernel.h>
  42 #include <sys/malloc.h>
  43 #include <sys/queue.h>
  44 #include <dev/ic/isp_netbsd.h>
  45 #include <sys/intr.h>
  46 #include <machine/autoconf.h>
  47 #include <dev/sbus/sbusvar.h>
  48 #include <sys/reboot.h>
  49
  50 static void isp_sbus_reset0(ispsoftc_t *);
  51 static void isp_sbus_reset1(ispsoftc_t *);
  52 static int isp_sbus_intr(void *);
  53 static int
  54 isp_sbus_rd_isr(ispsoftc_t *, uint32_t *, uint16_t *, uint16_t *);
  55 static uint32_t isp_sbus_rd_reg(ispsoftc_t *, int);
  56 static void isp_sbus_wr_reg (ispsoftc_t *, int, uint32_t);
  57 static int isp_sbus_mbxdma(ispsoftc_t *);
  58 static int isp_sbus_dmasetup(ispsoftc_t *, XS_T *, void *);
  59 static void isp_sbus_dmateardown(ispsoftc_t *, XS_T *, uint32_t);
  60
  61 #ifndef ISP_DISABLE_FW
  62 #include <dev/microcode/isp/asm_sbus.h>
  63 #else
  64 #define ISP_1000_RISC_CODE      NULL
  65 #endif
  66
  67 static const struct ispmdvec mdvec = {
  68         isp_sbus_rd_isr,
  69         isp_sbus_rd_reg,
  70         isp_sbus_wr_reg,
  71         isp_sbus_mbxdma,
  72         isp_sbus_dmasetup,
  73         isp_sbus_dmateardown,
  74         isp_sbus_reset0,
  75         isp_sbus_reset1,
  76         NULL,
  77         ISP_1000_RISC_CODE,
  78         0,
  79         0
  80 };
  81
  82 struct isp_sbussoftc {
  83         ispsoftc_t      sbus_isp;
  84         sdparam         sbus_dev;
  85         struct scsipi_channel sbus_chan;
  86         bus_space_tag_t sbus_bustag;
  87         bus_space_handle_t sbus_reg;
  88         int             sbus_node;
  89         int             sbus_pri;
  90         struct ispmdvec sbus_mdvec;
  91         bus_dmamap_t    *sbus_dmamap;
  92         int16_t         sbus_poff[_NREG_BLKS];
  93 };
  94
  95
  96 static int isp_match(device_t, cfdata_t, void *);
  97 static void isp_sbus_attach(device_t, device_t, void *);
  98 CFATTACH_DECL_NEW(isp_sbus, sizeof (struct isp_sbussoftc),
  99     isp_match, isp_sbus_attach, NULL, NULL);
 100
 101 static int
 102 isp_match(device_t parent, cfdata_t cf, void *aux)
 103 {
 104         int rv;
 105         struct sbus_attach_args *sa = aux;
 106
 107         rv = (strcmp(cf->cf_name, sa->sa_name) == 0 ||
 108                 strcmp("PTI,ptisp", sa->sa_name) == 0 ||
 109                 strcmp("ptisp", sa->sa_name) == 0 ||
 110                 strcmp("SUNW,isp", sa->sa_name) == 0 ||
 111                 strcmp("QLGC,isp", sa->sa_name) == 0);
 112
 113         return (rv);
 114 }
 115
 116
 117 static void
 118 isp_sbus_attach(device_t parent, device_t self, void *aux)
 119 {
 120         int freq, ispburst, sbusburst;
 121         struct sbus_attach_args *sa = aux;
 122         struct isp_sbussoftc *sbc = device_private(self);
 123         struct sbus_softc *sbsc = device_private(parent);
 124         ispsoftc_t *isp = &sbc->sbus_isp;
 125
 126         isp->isp_osinfo.dev = self;
 127
 128         printf(" for %s\n", sa->sa_name);
 129
 130         isp->isp_nchan = isp->isp_osinfo.adapter.adapt_nchannels = 1;
 131
 132         sbc->sbus_bustag = sa->sa_bustag;
 133         if (sa->sa_nintr != 0)
 134                 sbc->sbus_pri = sa->sa_pri;
 135         sbc->sbus_mdvec = mdvec;
 136
 137         if (sa->sa_npromvaddrs) {
 138                 sbus_promaddr_to_handle(sa->sa_bustag,
 139                         sa->sa_promvaddrs[0], &sbc->sbus_reg);
 140         } else {
 141                 if (sbus_bus_map(sa->sa_bustag, sa->sa_slot, sa->sa_offset,
 142                         sa->sa_size, 0, &sbc->sbus_reg) != 0) {
 143                         aprint_error_dev(self, "cannot map registers\n");
 144                         return;
 145                 }
 146         }
 147         sbc->sbus_node = sa->sa_node;
 148
 149         freq = prom_getpropint(sa->sa_node, "clock-frequency", 0);
 150         if (freq) {
 151                 /*
 152                  * Convert from HZ to MHz, rounding up.
 153                  */
 154                 freq = (freq + 500000)/1000000;
 155         }
 156         sbc->sbus_mdvec.dv_clock = freq;
 157
 158         /*
 159          * Now figure out what the proper burst sizes, etc., to use.
 160          * Unfortunately, there is no ddi_dma_burstsizes here which
 161          * walks up the tree finding the limiting burst size node (if
 162          * any).
 163          */
 164         sbusburst = sbsc->sc_burst;
 165         if (sbusburst == 0)
 166                 sbusburst = SBUS_BURST_32 - 1;
 167         ispburst = prom_getpropint(sa->sa_node, "burst-sizes", -1);
 168         if (ispburst == -1) {
 169                 ispburst = sbusburst;
 170         }
 171         ispburst &= sbusburst;
 172         ispburst &= ~(1 << 7);
 173         ispburst &= ~(1 << 6);
 174         sbc->sbus_mdvec.dv_conf1 =  0;
 175         if (ispburst & (1 << 5)) {
 176                 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_32;
 177         } else if (ispburst & (1 << 4)) {
 178                 sbc->sbus_mdvec.dv_conf1 = BIU_SBUS_CONF1_FIFO_16;
 179         } else if (ispburst & (1 << 3)) {
 180                 sbc->sbus_mdvec.dv_conf1 =
 181                     BIU_SBUS_CONF1_BURST8 | BIU_SBUS_CONF1_FIFO_8;
 182         }
 183         if (sbc->sbus_mdvec.dv_conf1) {
 184                 sbc->sbus_mdvec.dv_conf1 |= BIU_BURST_ENABLE;
 185         }
 186
 187         isp->isp_mdvec = &sbc->sbus_mdvec;
 188         isp->isp_bustype = ISP_BT_SBUS;
 189         isp->isp_type = ISP_HA_SCSI_UNKNOWN;
 190         isp->isp_param = &sbc->sbus_dev;
 191         isp->isp_dmatag = sa->sa_dmatag;
 192         ISP_MEMZERO(isp->isp_param, sizeof (sdparam));
 193         isp->isp_osinfo.chan = &sbc->sbus_chan;
 194
 195         sbc->sbus_poff[BIU_BLOCK >> _BLK_REG_SHFT] = BIU_REGS_OFF;
 196         sbc->sbus_poff[MBOX_BLOCK >> _BLK_REG_SHFT] = SBUS_MBOX_REGS_OFF;
 197         sbc->sbus_poff[SXP_BLOCK >> _BLK_REG_SHFT] = SBUS_SXP_REGS_OFF;
 198         sbc->sbus_poff[RISC_BLOCK >> _BLK_REG_SHFT] = SBUS_RISC_REGS_OFF;
 199         sbc->sbus_poff[DMA_BLOCK >> _BLK_REG_SHFT] = DMA_REGS_OFF;
 200
 201         /* Establish interrupt channel */
 202         bus_intr_establish(sbc->sbus_bustag, sbc->sbus_pri, IPL_BIO,
 203             isp_sbus_intr, sbc);
 204
 205         /*
 206          * Set up logging levels.
 207          */
 208 #ifdef  ISP_LOGDEFAULT
 209         isp->isp_dblev = ISP_LOGDEFAULT;
 210 #else
 211         isp->isp_dblev = ISP_LOGWARN|ISP_LOGERR;
 212         if (bootverbose)
 213                 isp->isp_dblev |= ISP_LOGCONFIG|ISP_LOGINFO;
 214 #ifdef  SCSIDEBUG
 215         isp->isp_dblev |= ISP_LOGDEBUG1|ISP_LOGDEBUG2;
 216 #endif
 217 #ifdef  DEBUG
 218         isp->isp_dblev |= ISP_LOGDEBUG0;
 219 #endif
 220 #endif
 221
 222         isp->isp_confopts = device_cfdata(self)->cf_flags;
 223         SDPARAM(isp, 0)->role = ISP_DEFAULT_ROLES;
 224
 225         /*
 226          * There's no tool on sparc to set NVRAM for ISPs, so ignore it.
 227          */
 228         isp->isp_confopts |= ISP_CFG_NONVRAM;
 229
 230         /*
 231          * Mark things if we're a PTI SBus adapter.
 232          */
 233         if (strcmp("PTI,ptisp", sa->sa_name) == 0 ||
 234             strcmp("ptisp", sa->sa_name) == 0) {
 235                 SDPARAM(isp, 0)->isp_ptisp = 1;
 236         }
 237         ISP_LOCK(isp);
 238         isp_reset(isp, 1);
 239         if (isp->isp_state != ISP_RESETSTATE) {
 240                 ISP_UNLOCK(isp);
 241                 return;
 242         }
 243         ISP_ENABLE_INTS(isp);
 244         isp_init(isp);
 245         if (isp->isp_state != ISP_INITSTATE) {
 246                 isp_uninit(isp);
 247                 ISP_UNLOCK(isp);
 248                 return;
 249         }
 250
 251         /*
 252          * do generic attach.
 253          */
 254         ISP_UNLOCK(isp);
 255         isp_attach(isp);
 256 }
 257
 258
 259 static void
 260 isp_sbus_reset0(ispsoftc_t *isp)
 261 {
 262         ISP_DISABLE_INTS(isp);
 263 }
 264
 265 static void
 266 isp_sbus_reset1(ispsoftc_t *isp)
 267 {
 268         ISP_ENABLE_INTS(isp);
 269 }
 270
 271 static int
 272 isp_sbus_intr(void *arg)
 273 {
 274         uint32_t isr;
 275         uint16_t sema, mbox;
 276         ispsoftc_t *isp = arg;
 277
 278         if (ISP_READ_ISR(isp, &isr, &sema, &mbox) == 0) {
 279                 isp->isp_intbogus++;
 280                 return (0);
 281         } else {
 282                 struct isp_sbussoftc *sbc = arg;
 283                 sbc->sbus_isp.isp_osinfo.onintstack = 1;
 284                 isp_intr(isp, isr, sema, mbox);
 285                 sbc->sbus_isp.isp_osinfo.onintstack = 0;
 286                 return (1);
 287         }
 288 }
 289
 290 #define IspVirt2Off(a, x)       \
 291         (((struct isp_sbussoftc *)a)->sbus_poff[((x) & _BLK_REG_MASK) >> \
 292         _BLK_REG_SHFT] + ((x) & 0xff))
 293
 294 #define BXR2(sbc, off)          \
 295         bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, off)
 296
 297 static int
 298 isp_sbus_rd_isr(ispsoftc_t *isp, uint32_t *isrp,
 299     uint16_t *semap, uint16_t *mbp)
 300 {
 301         struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
 302         uint32_t isr;
 303         uint16_t sema;
 304
 305         isr = BXR2(sbc, IspVirt2Off(isp, BIU_ISR));
 306         sema = BXR2(sbc, IspVirt2Off(isp, BIU_SEMA));
 307         isp_prt(isp, ISP_LOGDEBUG3, "ISR 0x%x SEMA 0x%x", isr, sema);
 308         isr &= INT_PENDING_MASK(isp);
 309         sema &= BIU_SEMA_LOCK;
 310         if (isr == 0 && sema == 0) {
 311                 return (0);
 312         }
 313         *isrp = isr;
 314         if ((*semap = sema) != 0) {
 315                 *mbp = BXR2(sbc, IspVirt2Off(isp, OUTMAILBOX0));
 316         }
 317         return (1);
 318 }
 319
 320 static uint32_t
 321 isp_sbus_rd_reg(ispsoftc_t *isp, int regoff)
 322 {
 323         struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
 324         int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
 325         offset += (regoff & 0xff);
 326         return (bus_space_read_2(sbc->sbus_bustag, sbc->sbus_reg, offset));
 327 }
 328
 329 static void
 330 isp_sbus_wr_reg(ispsoftc_t *isp, int regoff, uint32_t val)
 331 {
 332         struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
 333         int offset = sbc->sbus_poff[(regoff & _BLK_REG_MASK) >> _BLK_REG_SHFT];
 334         offset += (regoff & 0xff);
 335         bus_space_write_2(sbc->sbus_bustag, sbc->sbus_reg, offset, val);
 336 }
 337
 338 static int
 339 isp_sbus_mbxdma(ispsoftc_t *isp)
 340 {
 341         struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
 342         bus_dma_segment_t reqseg, rspseg;
 343         int reqrs, rsprs, i, progress;
 344         size_t n;
 345         bus_size_t len;
 346
 347         if (isp->isp_rquest_dma)
 348                 return (0);
 349
 350         n = isp->isp_maxcmds * sizeof (XS_T *);
 351         isp->isp_xflist = (XS_T **) malloc(n, M_DEVBUF, M_WAITOK);
 352         if (isp->isp_xflist == NULL) {
 353                 isp_prt(isp, ISP_LOGERR, "cannot alloc xflist array");
 354                 return (1);
 355         }
 356         ISP_MEMZERO(isp->isp_xflist, n);
 357         n = sizeof (bus_dmamap_t) * isp->isp_maxcmds;
 358         sbc->sbus_dmamap = (bus_dmamap_t *) malloc(n, M_DEVBUF, M_WAITOK);
 359         if (sbc->sbus_dmamap == NULL) {
 360                 free(isp->isp_xflist, M_DEVBUF);
 361                 isp->isp_xflist = NULL;
 362                 isp_prt(isp, ISP_LOGERR, "cannot alloc dmamap array");
 363                 return (1);
 364         }
 365         for (i = 0; i < isp->isp_maxcmds; i++) {
 366                 /* Allocate a DMA handle */
 367                 if (bus_dmamap_create(isp->isp_dmatag, MAXPHYS, 1, MAXPHYS,
 368                     1 << 24, BUS_DMA_NOWAIT, &sbc->sbus_dmamap[i]) != 0) {
 369                         isp_prt(isp, ISP_LOGERR, "cmd DMA maps create error");
 370                         break;
 371                 }
 372         }
 373         if (i < isp->isp_maxcmds) {
 374                 while (--i >= 0) {
 375                         bus_dmamap_destroy(isp->isp_dmatag,
 376                             sbc->sbus_dmamap[i]);
 377                 }
 378                 free(isp->isp_xflist, M_DEVBUF);
 379                 free(sbc->sbus_dmamap, M_DEVBUF);
 380                 isp->isp_xflist = NULL;
 381                 sbc->sbus_dmamap = NULL;
 382                 return (1);
 383         }
 384
 385         /*
 386          * Allocate and map the request and response queues
 387          */
 388         progress = 0;
 389         len = ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp));
 390         if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &reqseg, 1, &reqrs,
 391             BUS_DMA_NOWAIT)) {
 392                 goto dmafail;
 393         }
 394         progress++;
 395         if (bus_dmamem_map(isp->isp_dmatag, &reqseg, reqrs, len,
 396             (void *)&isp->isp_rquest, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
 397                 goto dmafail;
 398         }
 399         progress++;
 400         if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24,
 401             BUS_DMA_NOWAIT, &isp->isp_rqdmap) != 0) {
 402                 goto dmafail;
 403         }
 404         progress++;
 405         if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rqdmap,
 406             isp->isp_rquest, len, NULL, BUS_DMA_NOWAIT) != 0) {
 407                 goto dmafail;
 408         }
 409         progress++;
 410         isp->isp_rquest_dma = isp->isp_rqdmap->dm_segs[0].ds_addr;
 411
 412         len = ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp));
 413         if (bus_dmamem_alloc(isp->isp_dmatag, len, 0, 0, &rspseg, 1, &rsprs,
 414             BUS_DMA_NOWAIT)) {
 415                 goto dmafail;
 416         }
 417         progress++;
 418         if (bus_dmamem_map(isp->isp_dmatag, &rspseg, rsprs, len,
 419             (void *)&isp->isp_result, BUS_DMA_NOWAIT|BUS_DMA_COHERENT)) {
 420                 goto dmafail;
 421         }
 422         progress++;
 423         if (bus_dmamap_create(isp->isp_dmatag, len, 1, len, 1 << 24,
 424             BUS_DMA_NOWAIT, &isp->isp_rsdmap) != 0) {
 425                 goto dmafail;
 426         }
 427         progress++;
 428         if (bus_dmamap_load(isp->isp_dmatag, isp->isp_rsdmap,
 429             isp->isp_result, len, NULL, BUS_DMA_NOWAIT) != 0) {
 430                 goto dmafail;
 431         }
 432         isp->isp_result_dma = isp->isp_rsdmap->dm_segs[0].ds_addr;
 433
 434         return (0);
 435
 436 dmafail:
 437         isp_prt(isp, ISP_LOGERR, "Mailbox DMA Setup Failure");
 438
 439         if (progress >= 8) {
 440                 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rsdmap);
 441         }
 442         if (progress >= 7) {
 443                 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rsdmap);
 444         }
 445         if (progress >= 6) {
 446                 bus_dmamem_unmap(isp->isp_dmatag,
 447                     isp->isp_result, ISP_QUEUE_SIZE(RESULT_QUEUE_LEN(isp)));
 448         }
 449         if (progress >= 5) {
 450                 bus_dmamem_free(isp->isp_dmatag, &rspseg, rsprs);
 451         }
 452
 453         if (progress >= 4) {
 454                 bus_dmamap_unload(isp->isp_dmatag, isp->isp_rqdmap);
 455         }
 456         if (progress >= 3) {
 457                 bus_dmamap_destroy(isp->isp_dmatag, isp->isp_rqdmap);
 458         }
 459         if (progress >= 2) {
 460                 bus_dmamem_unmap(isp->isp_dmatag,
 461                     isp->isp_rquest, ISP_QUEUE_SIZE(RQUEST_QUEUE_LEN(isp)));
 462         }
 463         if (progress >= 1) {
 464                 bus_dmamem_free(isp->isp_dmatag, &reqseg, reqrs);
 465         }
 466
 467         for (i = 0; i < isp->isp_maxcmds; i++) {
 468                 bus_dmamap_destroy(isp->isp_dmatag, sbc->sbus_dmamap[i]);
 469         }
 470         free(sbc->sbus_dmamap, M_DEVBUF);
 471         free(isp->isp_xflist, M_DEVBUF);
 472         isp->isp_xflist = NULL;
 473         sbc->sbus_dmamap = NULL;
 474         return (1);
 475 }
 476
 477 /*
 478  * Map a DMA request.
 479  * We're guaranteed that rq->req_handle is a value from 1 to isp->isp_maxcmds.
 480  */
 481
 482 static int
 483 isp_sbus_dmasetup(struct ispsoftc *isp, struct scsipi_xfer *xs, void *arg)
 484 {
 485         struct isp_sbussoftc *sbc = (struct isp_sbussoftc *)isp;
 486         ispreq_t *rq = arg;
 487         bus_dmamap_t dmap;
 488         bus_dma_segment_t *dm_segs;
 489         uint32_t nsegs;
 490         isp_ddir_t ddir;
 491
 492         dmap = sbc->sbus_dmamap[isp_handle_index(rq->req_handle)];
 493         if (xs->datalen == 0) {
 494                 ddir = ISP_NOXFR;
 495                 nsegs = 0;
 496                 dm_segs = NULL;
 497          } else {
 498                 int error;
 499                 uint32_t flag, flg2;
 500
 501                 if (xs->xs_control & XS_CTL_DATA_IN) {
 502                         flg2 = BUS_DMASYNC_PREREAD;
 503                         flag = BUS_DMA_READ;
 504                         ddir = ISP_FROM_DEVICE;
 505                 } else {
 506                         flg2 = BUS_DMASYNC_PREWRITE;
 507                         flag = BUS_DMA_WRITE;
 508                         ddir = ISP_TO_DEVICE;
 509                 }
 510                 error = bus_dmamap_load(isp->isp_dmatag, dmap, xs->data, xs->datalen,
 511                     NULL, ((xs->xs_control & XS_CTL_NOSLEEP) ? BUS_DMA_NOWAIT : BUS_DMA_WAITOK) | BUS_DMA_STREAMING | flag);
 512                 if (error) {
 513                         isp_prt(isp, ISP_LOGWARN, "unable to load DMA (%d)", error);
 514                         XS_SETERR(xs, HBA_BOTCH);
 515                         if (error == EAGAIN || error == ENOMEM) {
 516                                 return (CMD_EAGAIN);
 517                         } else {
 518                                 return (CMD_COMPLETE);
 519                         }
 520                 }
 521                 dm_segs = dmap->dm_segs;
 522                 nsegs = dmap->dm_nsegs;
 523                 bus_dmamap_sync(isp->isp_dmatag, dmap, 0, dmap->dm_mapsize, flg2);
 524         }
 525
 526         if (isp_send_cmd(isp, rq, dm_segs, nsegs, xs->datalen, ddir) != CMD_QUEUED) {
 527                 return (CMD_EAGAIN);
 528         } else {
 529                 return (CMD_QUEUED);
 530         }
 531 }
 532
 533 static void
 534 isp_sbus_dmateardown(ispsoftc_t *isp, XS_T *xs, uint32_t handle)
 535 {
 536         struct isp_sbussoftc *sbc = (struct isp_sbussoftc *) isp;
 537         bus_dmamap_t dmap;
 538
 539         dmap = sbc->sbus_dmamap[isp_handle_index(handle)];
 540
 541         if (dmap->dm_nsegs == 0) {
 542                 panic("%s: DMA map not already allocated",
 543                     device_xname(isp->isp_osinfo.dev));
 544                 /* NOTREACHED */
 545         }
 546         bus_dmamap_sync(isp->isp_dmatag, dmap, 0,
 547             xs->datalen, (xs->xs_control & XS_CTL_DATA_IN)?
 548             BUS_DMASYNC_POSTREAD : BUS_DMASYNC_POSTWRITE);
 549         bus_dmamap_unload(isp->isp_dmatag, dmap);
 550 }