ld_icp.c

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    1 /*      $NetBSD: ld_icp.c,v 1.8 2003/06/13 05:57:31 thorpej 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 /*
   40  * ICP-Vortex "GDT" front-end for ld(4) driver.
   41  */
   42 
   43 #include <sys/cdefs.h>
   44 __KERNEL_RCSID(0, "$NetBSD: ld_icp.c,v 1.8 2003/06/13 05:57:31 thorpej Exp $");
   45 
   46 #include "rnd.h"
   47 
   48 #include <sys/param.h>
   49 #include <sys/systm.h>
   50 #include <sys/kernel.h>
   51 #include <sys/device.h>
   52 #include <sys/buf.h>
   53 #include <sys/endian.h>
   54 #include <sys/dkio.h>
   55 #include <sys/disk.h>
   56 #if NRND > 0
   57 #include <sys/rnd.h>
   58 #endif
   59 
   60 #include <uvm/uvm_extern.h>
   61 
   62 #include <machine/bus.h>
   63 
   64 #include <dev/ldvar.h>
   65 
   66 #include <dev/ic/icpreg.h>
   67 #include <dev/ic/icpvar.h>
   68 
   69 struct ld_icp_softc {
   70         struct  ld_softc sc_ld;
   71         int     sc_hwunit;
   72 };
   73 
   74 void    ld_icp_attach(struct device *, struct device *, void *);
   75 int     ld_icp_detach(struct device *, int);
   76 int     ld_icp_dobio(struct ld_icp_softc *, void *, int, int, int,
   77                      struct buf *);
   78 int     ld_icp_dump(struct ld_softc *, void *, int, int);
   79 int     ld_icp_flush(struct ld_softc *);
   80 void    ld_icp_intr(struct icp_ccb *);
   81 int     ld_icp_match(struct device *, struct cfdata *, void *);
   82 int     ld_icp_start(struct ld_softc *, struct buf *);
   83 
   84 void    ld_icp_adjqparam(struct device *, int);
   85 
   86 CFATTACH_DECL(ld_icp, sizeof(struct ld_icp_softc),
   87     ld_icp_match, ld_icp_attach, ld_icp_detach, NULL);
   88 
   89 static const struct icp_servicecb ld_icp_servicecb = {
   90         ld_icp_adjqparam,
   91 };
   92 
   93 int
   94 ld_icp_match(struct device *parent, struct cfdata *match, void *aux)
   95 {
   96         struct icp_attach_args *icpa;
   97 
   98         icpa = aux;
   99 
  100         return (icpa->icpa_unit < ICPA_UNIT_SCSI);
  101 }
  102 
  103 void
  104 ld_icp_attach(struct device *parent, struct device *self, void *aux)
  105 {
  106         struct icp_attach_args *icpa;
  107         struct ld_icp_softc *sc;
  108         struct ld_softc *ld;
  109         struct icp_softc *icp;
  110         struct icp_cachedrv *cd;
  111         struct icp_cdevinfo *cdi;
  112         const char *str;
  113         int t;
  114 
  115         sc = (struct ld_icp_softc *)self;
  116         ld = &sc->sc_ld;
  117         icp = (struct icp_softc *)parent;
  118         icpa = aux;
  119         cd = &icp->icp_cdr[icpa->icpa_unit];
  120 
  121         icp_register_servicecb(icp, icpa->icpa_unit, &ld_icp_servicecb);
  122 
  123         sc->sc_hwunit = icpa->icpa_unit;
  124         ld->sc_maxxfer = ICP_MAX_XFER;
  125         ld->sc_secsize = ICP_SECTOR_SIZE;
  126         ld->sc_start = ld_icp_start;
  127         ld->sc_dump = ld_icp_dump;
  128         ld->sc_flush = ld_icp_flush;
  129         ld->sc_secperunit = cd->cd_size;
  130         ld->sc_flags = LDF_ENABLED;
  131         ld->sc_maxqueuecnt = icp->icp_openings;
  132 
  133         if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, ICP_CACHE_DRV_INFO,
  134             sc->sc_hwunit, sizeof(struct icp_cdevinfo))) {
  135                 printf(": unable to retrieve device info\n");
  136                 ld->sc_flags = LDF_ENABLED;
  137                 goto out;
  138         }
  139         cdi = (struct icp_cdevinfo *)icp->icp_scr;
  140 
  141         printf(": <%.8s>, ", cdi->ld_name);
  142         t = le32toh(cdi->ld_dtype) >> 16;
  143 
  144         /*
  145          * Print device type.
  146          */
  147         if (le32toh(cdi->ld_dcnt) > 1 || le32toh(cdi->ld_slave) != -1)
  148                 str = "RAID-1";
  149         else if (t == 0)
  150                 str = "JBOD";
  151         else if (t == 1)
  152                 str = "RAID-0";
  153         else if (t == 2)
  154                 str = "Chain";
  155         else
  156                 str = "unknown type";
  157 
  158         printf("type: %s, ", str);
  159 
  160         /*
  161          * Print device status.
  162          */
  163         if (t > 2)
  164                 str = "missing";
  165         else if ((cdi->ld_error & 1) != 0) {
  166                 str = "fault";
  167                 ld->sc_flags = LDF_ENABLED;
  168         } else if ((cdi->ld_error & 2) != 0)
  169                 str = "invalid";
  170         else {
  171                 str = "optimal";
  172                 ld->sc_flags = LDF_ENABLED;
  173         }
  174                 
  175         printf("status: %s\n", str);
  176 
  177  out:
  178         ldattach(ld);
  179 }
  180 
  181 int
  182 ld_icp_detach(struct device *dv, int flags)
  183 {
  184         int rv;
  185 
  186         if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0)
  187                 return (rv);
  188         ldenddetach((struct ld_softc *) dv);
  189 
  190         return (0);
  191 }
  192 
  193 int
  194 ld_icp_dobio(struct ld_icp_softc *sc, void *data, int datasize, int blkno,
  195              int dowrite, struct buf *bp)
  196 {
  197         struct icp_cachecmd *cc;
  198         struct icp_ccb *ic;
  199         struct icp_softc *icp;
  200         int s, rv;
  201 
  202         icp = (struct icp_softc *)sc->sc_ld.sc_dv.dv_parent;
  203 
  204         /*
  205          * Allocate a command control block.
  206          */
  207         if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL))
  208                 return (EAGAIN);
  209 
  210         /*
  211          * Map the data transfer.
  212          */
  213         cc = &ic->ic_cmd.cmd_packet.cc;
  214         ic->ic_sg = cc->cc_sg;
  215         ic->ic_service = ICP_CACHESERVICE;
  216 
  217         rv = icp_ccb_map(icp, ic, data, datasize,
  218             dowrite ? IC_XFER_OUT : IC_XFER_IN);
  219         if (rv != 0) {
  220                 icp_ccb_free(icp, ic);
  221                 return (rv);
  222         }
  223 
  224         /*
  225          * Build the command.
  226          */
  227         ic->ic_cmd.cmd_opcode = htole16((dowrite ? ICP_WRITE : ICP_READ));
  228         cc->cc_deviceno = htole16(sc->sc_hwunit);
  229         cc->cc_blockno = htole32(blkno);
  230         cc->cc_blockcnt = htole32(datasize / ICP_SECTOR_SIZE);
  231         cc->cc_addr = ~0;       /* scatter gather */
  232         cc->cc_nsgent = htole32(ic->ic_nsgent);
  233 
  234         ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd +
  235             ic->ic_nsgent * sizeof(*ic->ic_sg);
  236 
  237         /*
  238          * Fire it off to the controller.
  239          */
  240         if (bp == NULL) {
  241                 s = splbio();
  242                 rv = icp_ccb_poll(icp, ic, 10000);
  243                 icp_ccb_unmap(icp, ic);
  244                 icp_ccb_free(icp, ic);
  245                 splx(s);
  246         } else {
  247                 ic->ic_intr = ld_icp_intr;
  248                 ic->ic_context = bp;
  249                 ic->ic_dv = &sc->sc_ld.sc_dv;
  250                 icp_ccb_enqueue(icp, ic);
  251         }
  252 
  253         return (rv);
  254 }
  255 
  256 int
  257 ld_icp_start(struct ld_softc *ld, struct buf *bp)
  258 {
  259 
  260         return (ld_icp_dobio((struct ld_icp_softc *)ld, bp->b_data,
  261             bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
  262 }
  263 
  264 int
  265 ld_icp_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
  266 {
  267 
  268         return (ld_icp_dobio((struct ld_icp_softc *)ld, data,
  269             blkcnt * ld->sc_secsize, blkno, 1, NULL));
  270 }
  271 
  272 int
  273 ld_icp_flush(struct ld_softc *ld)
  274 {
  275         struct ld_icp_softc *sc;
  276         struct icp_softc *icp;
  277         struct icp_cachecmd *cc;
  278         struct icp_ccb *ic;
  279         int rv;
  280 
  281         sc = (struct ld_icp_softc *)ld;
  282         icp = (struct icp_softc *)ld->sc_dv.dv_parent;
  283 
  284         ic = icp_ccb_alloc_wait(icp);
  285         ic->ic_cmd.cmd_opcode = htole16(ICP_FLUSH);
  286 
  287         cc = &ic->ic_cmd.cmd_packet.cc;
  288         cc->cc_deviceno = htole16(sc->sc_hwunit);
  289         cc->cc_blockno = htole32(1);
  290         cc->cc_blockcnt = 0;
  291         cc->cc_addr = 0;
  292         cc->cc_nsgent = 0;
  293 
  294         ic->ic_cmdlen = (u_long)&cc->cc_sg - (u_long)&ic->ic_cmd;
  295         ic->ic_service = ICP_CACHESERVICE;
  296 
  297         rv = icp_ccb_wait(icp, ic, 30000);
  298         icp_ccb_free(icp, ic);
  299 
  300         return (rv);
  301 }
  302 
  303 void
  304 ld_icp_intr(struct icp_ccb *ic)
  305 {
  306         struct buf *bp;
  307         struct ld_icp_softc *sc;
  308         struct icp_softc *icp;
  309 
  310         bp = ic->ic_context;
  311         sc = (struct ld_icp_softc *)ic->ic_dv;
  312         icp = (struct icp_softc *)sc->sc_ld.sc_dv.dv_parent;
  313 
  314         if (ic->ic_status != ICP_S_OK) {
  315                 printf("%s: request failed; status=0x%04x\n",
  316                     ic->ic_dv->dv_xname, ic->ic_status);
  317                 bp->b_flags |= B_ERROR;
  318                 bp->b_error = EIO;
  319                 bp->b_resid = bp->b_bcount;
  320 
  321                 icp->icp_evt.size = sizeof(icp->icp_evt.eu.sync);
  322                 icp->icp_evt.eu.sync.ionode = icp->icp_dv.dv_unit;
  323                 icp->icp_evt.eu.sync.service = icp->icp_service;
  324                 icp->icp_evt.eu.sync.status = icp->icp_status;
  325                 icp->icp_evt.eu.sync.info = icp->icp_info;
  326                 icp->icp_evt.eu.sync.hostdrive = sc->sc_hwunit;
  327                 if (icp->icp_status >= 0x8000)
  328                         icp_store_event(icp, GDT_ES_SYNC, 0, &icp->icp_evt);
  329                 else
  330                         icp_store_event(icp, GDT_ES_SYNC, icp->icp_service,
  331                             &icp->icp_evt);
  332         } else
  333                 bp->b_resid = 0;
  334 
  335         icp_ccb_unmap(icp, ic);
  336         icp_ccb_free(icp, ic);
  337         lddone(&sc->sc_ld, bp);
  338 }
  339 
  340 void
  341 ld_icp_adjqparam(struct device *dv, int openings)
  342 {
  343 
  344         ldadjqparam((struct ld_softc *) dv, openings);
  345 }
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FreeBSD/Linux Kernel Cross Reference sys/dev/ic/ld_icp.c

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sys/dev/ic/ld_icp.c
