ld_aac.c

Version: - FREEBSD - FREEBSD-13-STABLE - FREEBSD-13-0 - FREEBSD-12-STABLE - FREEBSD-12-0 - FREEBSD-11-STABLE - FREEBSD-11-0 - FREEBSD-10-STABLE - FREEBSD-10-0 - FREEBSD-9-STABLE - FREEBSD-9-0 - FREEBSD-8-STABLE - FREEBSD-8-0 - FREEBSD-7-STABLE - FREEBSD-7-0 - FREEBSD-6-STABLE - FREEBSD-6-0 - FREEBSD-5-STABLE - FREEBSD-5-0 - FREEBSD-4-STABLE - FREEBSD-3-STABLE - FREEBSD22 - l41 - OPENBSD - linux-2.6 - MK84 - PLAN9 - xnu-8792
SearchContext: - none - 3 - 10
    1 /*      $NetBSD: ld_aac.c,v 1.31 2022/07/30 12:48:17 mlelstv Exp $      */
    2 
    3 /*-
    4  * Copyright (c) 2002 The NetBSD Foundation, Inc.
    5  * All rights reserved.
    6  *
    7  * This code is derived from software contributed to The NetBSD Foundation
    8  * by Andrew Doran.
    9  *
   10  * Redistribution and use in source and binary forms, with or without
   11  * modification, are permitted provided that the following conditions
   12  * are met:
   13  * 1. Redistributions of source code must retain the above copyright
   14  *    notice, this list of conditions and the following disclaimer.
   15  * 2. Redistributions in binary form must reproduce the above copyright
   16  *    notice, this list of conditions and the following disclaimer in the
   17  *    documentation and/or other materials provided with the distribution.
   18  *
   19  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   20  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   21  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   22  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   23  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   24  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   25  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   26  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   27  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   28  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   29  * POSSIBILITY OF SUCH DAMAGE.
   30  */
   31 
   32 #include <sys/cdefs.h>
   33 __KERNEL_RCSID(0, "$NetBSD: ld_aac.c,v 1.31 2022/07/30 12:48:17 mlelstv Exp $");
   34 
   35 #include <sys/param.h>
   36 #include <sys/systm.h>
   37 #include <sys/kernel.h>
   38 #include <sys/device.h>
   39 #include <sys/buf.h>
   40 #include <sys/bufq.h>
   41 #include <sys/endian.h>
   42 #include <sys/dkio.h>
   43 #include <sys/disk.h>
   44 #include <sys/module.h>
   45 
   46 #include <sys/bus.h>
   47 
   48 #include <dev/ldvar.h>
   49 
   50 #include <dev/ic/aacreg.h>
   51 #include <dev/ic/aacvar.h>
   52 
   53 #include "ioconf.h"
   54 
   55 struct ld_aac_softc {
   56         struct  ld_softc sc_ld;
   57         int     sc_hwunit;
   58 };
   59 
   60 static void     ld_aac_attach(device_t, device_t, void *);
   61 static void     ld_aac_intr(struct aac_ccb *);
   62 static int      ld_aac_dobio(struct ld_aac_softc *, void *, int, daddr_t, int,
   63                              struct buf *);
   64 static int      ld_aac_dump(struct ld_softc *, void *, int, int);
   65 static int      ld_aac_match(device_t, cfdata_t, void *);
   66 static int      ld_aac_start(struct ld_softc *, struct buf *);
   67 
   68 CFATTACH_DECL_NEW(ld_aac, sizeof(struct ld_aac_softc),
   69     ld_aac_match, ld_aac_attach, NULL, NULL);
   70 
   71 static int
   72 ld_aac_match(device_t parent, cfdata_t match, void *aux)
   73 {
   74 
   75         return (1);
   76 }
   77 
   78 static void
   79 ld_aac_attach(device_t parent, device_t self, void *aux)
   80 {
   81         struct aac_attach_args *aaca = aux;
   82         struct ld_aac_softc *sc = device_private(self);
   83         struct ld_softc *ld = &sc->sc_ld;
   84         struct aac_softc *aac = device_private(parent);
   85         struct aac_drive *hdr = &aac->sc_hdr[aaca->aaca_unit];
   86 
   87         ld->sc_dv = self;
   88 
   89         sc->sc_hwunit = aaca->aaca_unit;
   90         ld->sc_flags = LDF_ENABLED;
   91         ld->sc_maxxfer = AAC_MAX_XFER(aac);
   92         ld->sc_secperunit = hdr->hd_size;
   93         ld->sc_secsize = AAC_SECTOR_SIZE;
   94         ld->sc_maxqueuecnt =
   95             (aac->sc_max_fibs - AAC_NCCBS_RESERVE) / aac->sc_nunits;
   96         ld->sc_start = ld_aac_start;
   97         ld->sc_dump = ld_aac_dump;
   98 
   99         aprint_normal(": %s\n",
  100             aac_describe_code(aac_container_types, hdr->hd_devtype));
  101         ldattach(ld, BUFQ_DISK_DEFAULT_STRAT);
  102 }
  103 
  104 static int
  105 ld_aac_dobio(struct ld_aac_softc *sc, void *data, int datasize, daddr_t blkno,
  106              int dowrite, struct buf *bp)
  107 {
  108         struct aac_blockread_response *brr;
  109         struct aac_blockwrite_response *bwr;
  110         struct aac_ccb *ac;
  111         struct aac_softc *aac;
  112         struct aac_fib *fib;
  113         bus_dmamap_t xfer;
  114         u_int32_t status;
  115         u_int16_t size;
  116         int s, rv, i;
  117 
  118         aac = device_private(device_parent(sc->sc_ld.sc_dv));
  119 
  120         /*
  121          * Allocate a command control block and map the data transfer.
  122          */
  123         ac = aac_ccb_alloc(aac, (dowrite ? AAC_CCB_DATA_OUT : AAC_CCB_DATA_IN));
  124         if (ac == NULL)
  125                 return EBUSY;
  126         ac->ac_data = data;
  127         ac->ac_datalen = datasize;
  128 
  129         if ((rv = aac_ccb_map(aac, ac)) != 0) {
  130                 aac_ccb_free(aac, ac);
  131                 return (rv);
  132         }
  133 
  134         /*
  135          * Build the command.
  136          */
  137         fib = ac->ac_fib;
  138 
  139         fib->Header.XferState = htole32(AAC_FIBSTATE_HOSTOWNED |
  140             AAC_FIBSTATE_INITIALISED | AAC_FIBSTATE_FROMHOST |
  141             AAC_FIBSTATE_REXPECTED | AAC_FIBSTATE_NORM |
  142             AAC_FIBSTATE_ASYNC | AAC_FIBSTATE_FAST_RESPONSE );
  143 
  144         if (aac->sc_quirks & AAC_QUIRK_RAW_IO) {
  145                 struct aac_raw_io *raw;
  146                 struct aac_sg_entryraw *sge;
  147                 struct aac_sg_tableraw *sgt;
  148 
  149                 raw = (struct aac_raw_io *)&fib->data[0];
  150                 fib->Header.Command = htole16(RawIo);
  151                 raw->BlockNumber = htole64(blkno);
  152                 raw->ByteCount = htole32(datasize);
  153                 raw->ContainerId = htole16(sc->sc_hwunit);
  154                 raw->BpTotal = 0;
  155                 raw->BpComplete = 0;
  156                 size = sizeof(struct aac_raw_io);
  157                 sgt = &raw->SgMapRaw;
  158                 raw->Flags = (dowrite ? 0 : 1);
  159 
  160                 xfer = ac->ac_dmamap_xfer;
  161                 sgt->SgCount = xfer->dm_nsegs;
  162                 sge = sgt->SgEntryRaw;
  163 
  164                 for (i = 0; i < xfer->dm_nsegs; i++, sge++) {
  165                         sge->SgAddress = htole64(xfer->dm_segs[i].ds_addr);
  166                         sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len);
  167                         sge->Next = 0;
  168                         sge->Prev = 0;
  169                         sge->Flags = 0;
  170                 }
  171                 size += xfer->dm_nsegs * sizeof(struct aac_sg_entryraw);
  172                 size = sizeof(fib->Header) + size;
  173                 fib->Header.Size = htole16(size);
  174         } else if ((aac->sc_quirks & AAC_QUIRK_SG_64BIT) == 0) {
  175                 struct aac_blockread *br;
  176                 struct aac_blockwrite *bw;
  177                 struct aac_sg_entry *sge;
  178                 struct aac_sg_table *sgt;
  179 
  180                 fib->Header.Command = htole16(ContainerCommand);
  181                 if (dowrite) {
  182                         bw = (struct aac_blockwrite *)&fib->data[0];
  183                         bw->Command = htole32(VM_CtBlockWrite);
  184                         bw->ContainerId = htole32(sc->sc_hwunit);
  185                         bw->BlockNumber = htole32(blkno);
  186                         bw->ByteCount = htole32(datasize);
  187                         bw->Stable = htole32(CUNSTABLE);
  188                         /* CSTABLE sometimes?  FUA? */
  189 
  190                         size = sizeof(struct aac_blockwrite);
  191                         sgt = &bw->SgMap;
  192                 } else {
  193                         br = (struct aac_blockread *)&fib->data[0];
  194                         br->Command = htole32(VM_CtBlockRead);
  195                         br->ContainerId = htole32(sc->sc_hwunit);
  196                         br->BlockNumber = htole32(blkno);
  197                         br->ByteCount = htole32(datasize);
  198 
  199                         size = sizeof(struct aac_blockread);
  200                         sgt = &br->SgMap;
  201                 }
  202 
  203                 xfer = ac->ac_dmamap_xfer;
  204                 sgt->SgCount = xfer->dm_nsegs;
  205                 sge = sgt->SgEntry;
  206 
  207                 for (i = 0; i < xfer->dm_nsegs; i++, sge++) {
  208                         sge->SgAddress = htole32(xfer->dm_segs[i].ds_addr);
  209                         sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len);
  210                         AAC_DPRINTF(AAC_D_IO,
  211                             ("#%d va %p pa %" PRIxPADDR " len %zx\n",
  212                             i, data, xfer->dm_segs[i].ds_addr,
  213                             xfer->dm_segs[i].ds_len));
  214                 }
  215 
  216                 size += xfer->dm_nsegs * sizeof(struct aac_sg_entry);
  217                 size = sizeof(fib->Header) + size;
  218                 fib->Header.Size = htole16(size);
  219         } else {
  220                 struct aac_blockread64 *br;
  221                 struct aac_blockwrite64 *bw;
  222                 struct aac_sg_entry64 *sge;
  223                 struct aac_sg_table64 *sgt;
  224 
  225                 fib->Header.Command = htole16(ContainerCommand64);
  226                 if (dowrite) {
  227                         bw = (struct aac_blockwrite64 *)&fib->data[0];
  228                         bw->Command = htole32(VM_CtHostWrite64);
  229                         bw->BlockNumber = htole32(blkno);
  230                         bw->ContainerId = htole16(sc->sc_hwunit);
  231                         bw->SectorCount = htole16(datasize / AAC_BLOCK_SIZE);
  232                         bw->Pad = 0;
  233                         bw->Flags = 0;
  234 
  235                         size = sizeof(struct aac_blockwrite64);
  236                         sgt = &bw->SgMap64;
  237                 } else {
  238                         br = (struct aac_blockread64 *)&fib->data[0];
  239                         br->Command = htole32(VM_CtHostRead64);
  240                         br->BlockNumber = htole32(blkno);
  241                         br->ContainerId = htole16(sc->sc_hwunit);
  242                         br->SectorCount = htole16(datasize / AAC_BLOCK_SIZE);
  243                         br->Pad = 0;
  244                         br->Flags = 0;
  245 
  246                         size = sizeof(struct aac_blockread64);
  247                         sgt = &br->SgMap64;
  248                 }
  249 
  250                 xfer = ac->ac_dmamap_xfer;
  251                 sgt->SgCount = xfer->dm_nsegs;
  252                 sge = sgt->SgEntry64;
  253 
  254                 for (i = 0; i < xfer->dm_nsegs; i++, sge++) {
  255                         /*
  256                          * XXX - This is probably an alignment issue on non-x86
  257                          * platforms since this is a packed array of 64/32-bit
  258                          * tuples, so every other SgAddress is 32-bit, but not
  259                          * 64-bit aligned.
  260                          */
  261                         sge->SgAddress = htole64(xfer->dm_segs[i].ds_addr);
  262                         sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len);
  263                         AAC_DPRINTF(AAC_D_IO,
  264                             ("#%d va %p pa %" PRIxPADDR " len %zx\n",
  265                             i, data, xfer->dm_segs[i].ds_addr,
  266                             xfer->dm_segs[i].ds_len));
  267                 }
  268                 size += xfer->dm_nsegs * sizeof(struct aac_sg_entry64);
  269                 size = sizeof(fib->Header) + size;
  270                 fib->Header.Size = htole16(size);
  271         }
  272 
  273         if (bp == NULL) {
  274                 /*
  275                  * Polled commands must not sit on the software queue.  Wait
  276                  * up to 30 seconds for the command to complete.
  277                  */
  278                 s = splbio();
  279                 rv = aac_ccb_poll(aac, ac, 30000);
  280                 aac_ccb_unmap(aac, ac);
  281                 aac_ccb_free(aac, ac);
  282                 splx(s);
  283 
  284                 if (rv == 0) {
  285                         if (dowrite) {
  286                                 bwr = (struct aac_blockwrite_response *)
  287                                     &ac->ac_fib->data[0];
  288                                 status = le32toh(bwr->Status);
  289                         } else {
  290                                 brr = (struct aac_blockread_response *)
  291                                     &ac->ac_fib->data[0];
  292                                 status = le32toh(brr->Status);
  293                         }
  294 
  295                         if (status != ST_OK) {
  296                                 device_printf(sc->sc_ld.sc_dv,
  297                                     "I/O error: %s\n",
  298                                     aac_describe_code(aac_command_status_table,
  299                                     status));
  300                                 rv = EIO;
  301                         }
  302                 }
  303         } else {
  304                 ac->ac_device = sc->sc_ld.sc_dv;
  305                 ac->ac_context = bp;
  306                 ac->ac_intr = ld_aac_intr;
  307                 aac_ccb_enqueue(aac, ac);
  308                 rv = 0;
  309         }
  310 
  311         return (rv);
  312 }
  313 
  314 static int
  315 ld_aac_start(struct ld_softc *ld, struct buf *bp)
  316 {
  317 
  318         return (ld_aac_dobio((struct ld_aac_softc *)ld, bp->b_data,
  319             bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
  320 }
  321 
  322 static void
  323 ld_aac_intr(struct aac_ccb *ac)
  324 {
  325         struct aac_blockread_response *brr;
  326         struct aac_blockwrite_response *bwr;
  327         struct ld_aac_softc *sc;
  328         struct aac_softc *aac;
  329         struct buf *bp;
  330         u_int32_t status;
  331 
  332         bp = ac->ac_context;
  333         sc = device_private(ac->ac_device);
  334         aac = device_private(device_parent(ac->ac_device));
  335 
  336         if ((bp->b_flags & B_READ) != 0) {
  337                 brr = (struct aac_blockread_response *)&ac->ac_fib->data[0];
  338                 status = le32toh(brr->Status);
  339         } else {
  340                 bwr = (struct aac_blockwrite_response *)&ac->ac_fib->data[0];
  341                 status = le32toh(bwr->Status);
  342         }
  343 
  344         aac_ccb_unmap(aac, ac);
  345         aac_ccb_free(aac, ac);
  346 
  347         if (status != ST_OK) {
  348                 bp->b_error = EIO;
  349                 bp->b_resid = bp->b_bcount;
  350 
  351                 device_printf(sc->sc_ld.sc_dv, "I/O error: %s\n",
  352                     aac_describe_code(aac_command_status_table, status));
  353         } else
  354                 bp->b_resid = 0;
  355 
  356         lddone(&sc->sc_ld, bp);
  357 }
  358 
  359 static int
  360 ld_aac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
  361 {
  362 
  363         return (ld_aac_dobio((struct ld_aac_softc *)ld, data,
  364             blkcnt * ld->sc_secsize, blkno, 1, NULL));
  365 }
  366 
  367 MODULE(MODULE_CLASS_DRIVER, ld_aac, "ld,aac");
  368 
  369 #ifdef _MODULE
  370 /*
  371  * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd"
  372  * XXX it will be defined in the common-code module
  373  */
  374 #undef  CFDRIVER_DECL
  375 #define CFDRIVER_DECL(name, class, attr)
  376 #include "ioconf.c" 
  377 #endif
  378 
  379 static int
  380 ld_aac_modcmd(modcmd_t cmd, void *opaque)
  381 {
  382 #ifdef _MODULE
  383         /*
  384          * We ignore the cfdriver_vec[] that ioconf provides, since
  385          * the cfdrivers are attached already.
  386          */
  387         static struct cfdriver * const no_cfdriver_vec[] = { NULL };
  388 #endif
  389         int error = 0;
  390 
  391 #ifdef _MODULE
  392         switch (cmd) {
  393         case MODULE_CMD_INIT:
  394                 error = config_init_component(no_cfdriver_vec,
  395                     cfattach_ioconf_ld_aac, cfdata_ioconf_ld_aac);
  396                 break;
  397         case MODULE_CMD_FINI:
  398                 error = config_fini_component(no_cfdriver_vec,
  399                     cfattach_ioconf_ld_aac, cfdata_ioconf_ld_aac);
  400                 break;
  401         default:
  402                 error = ENOTTY;
  403                 break;
  404         }
  405 #endif
  406 
  407         return error;
  408 }
  409
Cache object: 4419cd206f68d25de9daec3721c7b618
[ source navigation ] [ diff markup ] [ identifier search ] [ freetext search ] [ file search ] [ list types ] [ track identifier ]
This page is part of the FreeBSD/Linux Linux Kernel Cross-Reference, and was automatically generated using a modified version of the LXR engine.
FreeBSD/Linux Kernel Cross Reference sys/dev/ic/ld_aac.c

FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ld_aac.c
