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 1.8 2005/02/27 00:27:01 perry 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  * 3. All advertising materials mentioning features or use of this software
   19  *    must display the following acknowledgement:
   20  *        This product includes software developed by the NetBSD
   21  *        Foundation, Inc. and its contributors.
   22  * 4. Neither the name of The NetBSD Foundation nor the names of its
   23  *    contributors may be used to endorse or promote products derived
   24  *    from this software without specific prior written permission.
   25  *
   26  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
   27  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
   28  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
   29  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
   30  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
   31  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
   32  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
   33  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
   34  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
   35  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   36  * POSSIBILITY OF SUCH DAMAGE.
   37  */
   38 
   39 #include <sys/cdefs.h>
   40 __KERNEL_RCSID(0, "$NetBSD: ld_aac.c,v 1.8 2005/02/27 00:27:01 perry Exp $");
   41 
   42 #include "rnd.h"
   43 
   44 #include <sys/param.h>
   45 #include <sys/systm.h>
   46 #include <sys/kernel.h>
   47 #include <sys/device.h>
   48 #include <sys/buf.h>
   49 #include <sys/bufq.h>
   50 #include <sys/endian.h>
   51 #include <sys/dkio.h>
   52 #include <sys/disk.h>
   53 #if NRND > 0
   54 #include <sys/rnd.h>
   55 #endif
   56 
   57 #include <machine/bus.h>
   58 
   59 #include <uvm/uvm_extern.h>
   60 
   61 #include <dev/ldvar.h>
   62 
   63 #include <dev/ic/aacreg.h>
   64 #include <dev/ic/aacvar.h>
   65 
   66 struct ld_aac_softc {
   67         struct  ld_softc sc_ld;
   68         int     sc_hwunit;
   69 };
   70 
   71 static void     ld_aac_attach(struct device *, struct device *, void *);
   72 static void     ld_aac_intr(struct aac_ccb *);
   73 static int      ld_aac_dobio(struct ld_aac_softc *, void *, int, int, int,
   74                              struct buf *);
   75 static int      ld_aac_dump(struct ld_softc *, void *, int, int);
   76 static int      ld_aac_match(struct device *, struct cfdata *, void *);
   77 static int      ld_aac_start(struct ld_softc *, struct buf *);
   78 
   79 CFATTACH_DECL(ld_aac, sizeof(struct ld_aac_softc),
   80     ld_aac_match, ld_aac_attach, NULL, NULL);
   81 
   82 static int
   83 ld_aac_match(struct device *parent, struct cfdata *match, void *aux)
   84 {
   85 
   86         return (1);
   87 }
   88 
   89 static void
   90 ld_aac_attach(struct device *parent, struct device *self, void *aux)
   91 {
   92         struct aac_attach_args *aaca;
   93         struct aac_drive *hdr;
   94         struct ld_aac_softc *sc;
   95         struct ld_softc *ld;
   96         struct aac_softc *aac;
   97 
   98         aaca = aux;
   99         aac = (struct aac_softc *)parent;
  100         sc = (struct ld_aac_softc *)self;
  101         ld = &sc->sc_ld;
  102         hdr = &aac->sc_hdr[aaca->aaca_unit];
  103 
  104         sc->sc_hwunit = aaca->aaca_unit;
  105         ld->sc_flags = LDF_ENABLED;
  106         ld->sc_maxxfer = AAC_MAX_XFER;
  107         ld->sc_secperunit = hdr->hd_size;
  108         ld->sc_secsize = AAC_SECTOR_SIZE;
  109         ld->sc_maxqueuecnt = (AAC_NCCBS - AAC_NCCBS_RESERVE) / aac->sc_nunits;
  110         ld->sc_start = ld_aac_start;
  111         ld->sc_dump = ld_aac_dump;
  112 
  113         aprint_normal(": %s\n",
  114             aac_describe_code(aac_container_types, hdr->hd_devtype));
  115         ldattach(ld);
  116 }
  117 
  118 static int
  119 ld_aac_dobio(struct ld_aac_softc *sc, void *data, int datasize, int blkno,
  120              int dowrite, struct buf *bp)
  121 {
  122         struct aac_blockread_response *brr;
  123         struct aac_blockwrite_response *bwr;
  124         struct aac_ccb *ac;
  125         struct aac_softc *aac;
  126         struct aac_blockread *br;
  127         struct aac_blockwrite *bw;
  128         struct aac_sg_entry *sge;
  129         struct aac_sg_table *sgt;
  130         struct aac_fib *fib;
  131         bus_dmamap_t xfer;
  132         u_int32_t status;
  133         u_int16_t size;
  134         int s, rv, i;
  135 
  136         aac = (struct aac_softc *)sc->sc_ld.sc_dv.dv_parent;
  137 
  138         /*
  139          * Allocate a command control block and map the data transfer.
  140          */
  141         ac = aac_ccb_alloc(aac, (dowrite ? AAC_CCB_DATA_OUT : AAC_CCB_DATA_IN));
  142         ac->ac_data = data;
  143         ac->ac_datalen = datasize;
  144 
  145         if ((rv = aac_ccb_map(aac, ac)) != 0) {
  146                 aac_ccb_free(aac, ac);
  147                 return (rv);
  148         }
  149 
  150         /*
  151          * Build the command.
  152          */
  153         fib = ac->ac_fib;
  154 
  155         fib->Header.XferState = htole32(AAC_FIBSTATE_HOSTOWNED |
  156             AAC_FIBSTATE_INITIALISED | AAC_FIBSTATE_FROMHOST |
  157             AAC_FIBSTATE_REXPECTED | AAC_FIBSTATE_NORM);
  158         fib->Header.Command = htole16(ContainerCommand);
  159 
  160         if (dowrite) {
  161                 bw = (struct aac_blockwrite *)&fib->data[0];
  162                 bw->Command = htole32(VM_CtBlockWrite);
  163                 bw->ContainerId = htole32(sc->sc_hwunit);
  164                 bw->BlockNumber = htole32(blkno);
  165                 bw->ByteCount = htole32(datasize);
  166                 bw->Stable = htole32(CUNSTABLE); /* XXX what's appropriate here? */
  167 
  168                 size = sizeof(struct aac_blockwrite);
  169                 sgt = &bw->SgMap;
  170         } else {
  171                 br = (struct aac_blockread *)&fib->data[0];
  172                 br->Command = htole32(VM_CtBlockRead);
  173                 br->ContainerId = htole32(sc->sc_hwunit);
  174                 br->BlockNumber = htole32(blkno);
  175                 br->ByteCount = htole32(datasize);
  176 
  177                 size = sizeof(struct aac_blockread);
  178                 sgt = &br->SgMap;
  179         }
  180 
  181         xfer = ac->ac_dmamap_xfer;
  182         sgt->SgCount = xfer->dm_nsegs;
  183         sge = sgt->SgEntry;
  184 
  185         for (i = 0; i < xfer->dm_nsegs; i++, sge++) {
  186                 sge->SgAddress = htole32(xfer->dm_segs[i].ds_addr);
  187                 sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len);
  188                 AAC_DPRINTF(AAC_D_IO,
  189                     ("#%d va %p pa %lx len %x\n", i, data,
  190                     (u_long)xfer->dm_segs[i].ds_addr,
  191                     xfer->dm_segs[i].ds_len));
  192         }
  193 
  194         size += xfer->dm_nsegs * sizeof(struct aac_sg_entry);
  195         size = htole16(sizeof(fib->Header) + size);
  196         fib->Header.Size = htole16(size);
  197 
  198         if (bp == NULL) {
  199                 /*
  200                  * Polled commands must not sit on the software queue.  Wait
  201                  * up to 30 seconds for the command to complete.
  202                  */
  203                 s = splbio();
  204                 rv = aac_ccb_poll(aac, ac, 30000);
  205                 aac_ccb_unmap(aac, ac);
  206                 aac_ccb_free(aac, ac);
  207                 splx(s);
  208 
  209                 if (rv == 0) {
  210                         if (dowrite) {
  211                                 bwr = (struct aac_blockwrite_response *)
  212                                     &ac->ac_fib->data[0];
  213                                 status = le32toh(bwr->Status);
  214                         } else {
  215                                 brr = (struct aac_blockread_response *)
  216                                     &ac->ac_fib->data[0];
  217                                 status = le32toh(brr->Status);
  218                         }
  219 
  220                         if (status != ST_OK) {
  221                                 printf("%s: I/O error: %s\n",
  222                                     sc->sc_ld.sc_dv.dv_xname,
  223                                     aac_describe_code(aac_command_status_table,
  224                                     status));
  225                                 rv = EIO;
  226                         }
  227                 }
  228         } else {
  229                 ac->ac_device = (struct device *)sc;
  230                 ac->ac_context = bp;
  231                 ac->ac_intr = ld_aac_intr;
  232                 aac_ccb_enqueue(aac, ac);
  233                 rv = 0;
  234         }
  235 
  236         return (rv);
  237 }
  238 
  239 static int
  240 ld_aac_start(struct ld_softc *ld, struct buf *bp)
  241 {
  242 
  243         return (ld_aac_dobio((struct ld_aac_softc *)ld, bp->b_data,
  244             bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
  245 }
  246 
  247 static void
  248 ld_aac_intr(struct aac_ccb *ac)
  249 {
  250         struct aac_blockread_response *brr;
  251         struct aac_blockwrite_response *bwr;
  252         struct ld_aac_softc *sc;
  253         struct aac_softc *aac;
  254         struct buf *bp;
  255         u_int32_t status;
  256 
  257         bp = ac->ac_context;
  258         sc = (struct ld_aac_softc *)ac->ac_device;
  259         aac = (struct aac_softc *)sc->sc_ld.sc_dv.dv_parent;
  260 
  261         if ((bp->b_flags & B_READ) != 0) {
  262                 brr = (struct aac_blockread_response *)&ac->ac_fib->data[0];
  263                 status = le32toh(brr->Status);
  264         } else {
  265                 bwr = (struct aac_blockwrite_response *)&ac->ac_fib->data[0];
  266                 status = le32toh(bwr->Status);
  267         }
  268 
  269         aac_ccb_unmap(aac, ac);
  270         aac_ccb_free(aac, ac);
  271 
  272         if (status != ST_OK) {
  273                 bp->b_flags |= B_ERROR;
  274                 bp->b_error = EIO;
  275                 bp->b_resid = bp->b_bcount;
  276 
  277                 printf("%s: I/O error: %s\n", sc->sc_ld.sc_dv.dv_xname,
  278                     aac_describe_code(aac_command_status_table, status));
  279         } else
  280                 bp->b_resid = 0;
  281 
  282         lddone(&sc->sc_ld, bp);
  283 }
  284 
  285 static int
  286 ld_aac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
  287 {
  288 
  289         return (ld_aac_dobio((struct ld_aac_softc *)ld, data,
  290             blkcnt * ld->sc_secsize, blkno, 1, NULL));
  291 }
Cache object: 62ea749caf1839f17608605b560cd9d6
[ 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
