ld_icp.c

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    1 /*      $NetBSD: ld_icp.c,v 1.11 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 /*
   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 1.11 2005/02/27 00:27:01 perry 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/bufq.h>
   54 #include <sys/endian.h>
   55 #include <sys/dkio.h>
   56 #include <sys/disk.h>
   57 #if NRND > 0
   58 #include <sys/rnd.h>
   59 #endif
   60 
   61 #include <uvm/uvm_extern.h>
   62 
   63 #include <machine/bus.h>
   64 
   65 #include <dev/ldvar.h>
   66 
   67 #include <dev/ic/icpreg.h>
   68 #include <dev/ic/icpvar.h>
   69 
   70 struct ld_icp_softc {
   71         struct  ld_softc sc_ld;
   72         int     sc_hwunit;
   73 };
   74 
   75 void    ld_icp_attach(struct device *, struct device *, void *);
   76 int     ld_icp_detach(struct device *, int);
   77 int     ld_icp_dobio(struct ld_icp_softc *, void *, int, int, int,
   78                      struct buf *);
   79 int     ld_icp_dump(struct ld_softc *, void *, int, int);
   80 int     ld_icp_flush(struct ld_softc *);
   81 void    ld_icp_intr(struct icp_ccb *);
   82 int     ld_icp_match(struct device *, struct cfdata *, void *);
   83 int     ld_icp_start(struct ld_softc *, struct buf *);
   84 
   85 void    ld_icp_adjqparam(struct device *, int);
   86 
   87 CFATTACH_DECL(ld_icp, sizeof(struct ld_icp_softc),
   88     ld_icp_match, ld_icp_attach, ld_icp_detach, NULL);
   89 
   90 static const struct icp_servicecb ld_icp_servicecb = {
   91         ld_icp_adjqparam,
   92 };
   93 
   94 int
   95 ld_icp_match(struct device *parent, struct cfdata *match, void *aux)
   96 {
   97         struct icp_attach_args *icpa;
   98 
   99         icpa = aux;
  100 
  101         return (icpa->icpa_unit < ICPA_UNIT_SCSI);
  102 }
  103 
  104 void
  105 ld_icp_attach(struct device *parent, struct device *self, void *aux)
  106 {
  107         struct icp_attach_args *icpa;
  108         struct ld_icp_softc *sc;
  109         struct ld_softc *ld;
  110         struct icp_softc *icp;
  111         struct icp_cachedrv *cd;
  112         struct icp_cdevinfo *cdi;
  113         const char *str;
  114         int t;
  115 
  116         sc = (struct ld_icp_softc *)self;
  117         ld = &sc->sc_ld;
  118         icp = (struct icp_softc *)parent;
  119         icpa = aux;
  120         cd = &icp->icp_cdr[icpa->icpa_unit];
  121 
  122         icp_register_servicecb(icp, icpa->icpa_unit, &ld_icp_servicecb);
  123 
  124         sc->sc_hwunit = icpa->icpa_unit;
  125         ld->sc_maxxfer = ICP_MAX_XFER;
  126         ld->sc_secsize = ICP_SECTOR_SIZE;
  127         ld->sc_start = ld_icp_start;
  128         ld->sc_dump = ld_icp_dump;
  129         ld->sc_flush = ld_icp_flush;
  130         ld->sc_secperunit = cd->cd_size;
  131         ld->sc_flags = LDF_ENABLED;
  132         ld->sc_maxqueuecnt = icp->icp_openings;
  133 
  134         if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, ICP_CACHE_DRV_INFO,
  135             sc->sc_hwunit, sizeof(struct icp_cdevinfo))) {
  136                 aprint_error(": unable to retrieve device info\n");
  137                 ld->sc_flags = LDF_ENABLED;
  138                 goto out;
  139         }
  140         cdi = (struct icp_cdevinfo *)icp->icp_scr;
  141 
  142         aprint_normal(": <%.8s>, ", cdi->ld_name);
  143         t = le32toh(cdi->ld_dtype) >> 16;
  144 
  145         /*
  146          * Print device type.
  147          */
  148         if (le32toh(cdi->ld_dcnt) > 1 || le32toh(cdi->ld_slave) != -1)
  149                 str = "RAID-1";
  150         else if (t == 0)
  151                 str = "JBOD";
  152         else if (t == 1)
  153                 str = "RAID-0";
  154         else if (t == 2)
  155                 str = "Chain";
  156         else
  157                 str = "unknown type";
  158 
  159         aprint_normal("type: %s, ", str);
  160 
  161         /*
  162          * Print device status.
  163          */
  164         if (t > 2)
  165                 str = "missing";
  166         else if ((cdi->ld_error & 1) != 0) {
  167                 str = "fault";
  168                 ld->sc_flags = LDF_ENABLED;
  169         } else if ((cdi->ld_error & 2) != 0)
  170                 str = "invalid";
  171         else {
  172                 str = "optimal";
  173                 ld->sc_flags = LDF_ENABLED;
  174         }
  175 
  176         aprint_normal("status: %s\n", str);
  177 
  178  out:
  179         ldattach(ld);
  180 }
  181 
  182 int
  183 ld_icp_detach(struct device *dv, int flags)
  184 {
  185         int rv;
  186 
  187         if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0)
  188                 return (rv);
  189         ldenddetach((struct ld_softc *) dv);
  190 
  191         return (0);
  192 }
  193 
  194 int
  195 ld_icp_dobio(struct ld_icp_softc *sc, void *data, int datasize, int blkno,
  196              int dowrite, struct buf *bp)
  197 {
  198         struct icp_cachecmd *cc;
  199         struct icp_ccb *ic;
  200         struct icp_softc *icp;
  201         int s, rv;
  202 
  203         icp = (struct icp_softc *)sc->sc_ld.sc_dv.dv_parent;
  204 
  205         /*
  206          * Allocate a command control block.
  207          */
  208         if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL))
  209                 return (EAGAIN);
  210 
  211         /*
  212          * Map the data transfer.
  213          */
  214         cc = &ic->ic_cmd.cmd_packet.cc;
  215         ic->ic_sg = cc->cc_sg;
  216         ic->ic_service = ICP_CACHESERVICE;
  217 
  218         rv = icp_ccb_map(icp, ic, data, datasize,
  219             dowrite ? IC_XFER_OUT : IC_XFER_IN);
  220         if (rv != 0) {
  221                 icp_ccb_free(icp, ic);
  222                 return (rv);
  223         }
  224 
  225         /*
  226          * Build the command.
  227          */
  228         ic->ic_cmd.cmd_opcode = htole16((dowrite ? ICP_WRITE : ICP_READ));
  229         cc->cc_deviceno = htole16(sc->sc_hwunit);
  230         cc->cc_blockno = htole32(blkno);
  231         cc->cc_blockcnt = htole32(datasize / ICP_SECTOR_SIZE);
  232         cc->cc_addr = ~0;       /* scatter gather */
  233         cc->cc_nsgent = htole32(ic->ic_nsgent);
  234 
  235         ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd +
  236             ic->ic_nsgent * sizeof(*ic->ic_sg);
  237 
  238         /*
  239          * Fire it off to the controller.
  240          */
  241         if (bp == NULL) {
  242                 s = splbio();
  243                 rv = icp_ccb_poll(icp, ic, 10000);
  244                 icp_ccb_unmap(icp, ic);
  245                 icp_ccb_free(icp, ic);
  246                 splx(s);
  247         } else {
  248                 ic->ic_intr = ld_icp_intr;
  249                 ic->ic_context = bp;
  250                 ic->ic_dv = &sc->sc_ld.sc_dv;
  251                 icp_ccb_enqueue(icp, ic);
  252         }
  253 
  254         return (rv);
  255 }
  256 
  257 int
  258 ld_icp_start(struct ld_softc *ld, struct buf *bp)
  259 {
  260 
  261         return (ld_icp_dobio((struct ld_icp_softc *)ld, bp->b_data,
  262             bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
  263 }
  264 
  265 int
  266 ld_icp_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
  267 {
  268 
  269         return (ld_icp_dobio((struct ld_icp_softc *)ld, data,
  270             blkcnt * ld->sc_secsize, blkno, 1, NULL));
  271 }
  272 
  273 int
  274 ld_icp_flush(struct ld_softc *ld)
  275 {
  276         struct ld_icp_softc *sc;
  277         struct icp_softc *icp;
  278         struct icp_cachecmd *cc;
  279         struct icp_ccb *ic;
  280         int rv;
  281 
  282         sc = (struct ld_icp_softc *)ld;
  283         icp = (struct icp_softc *)ld->sc_dv.dv_parent;
  284 
  285         ic = icp_ccb_alloc_wait(icp);
  286         ic->ic_cmd.cmd_opcode = htole16(ICP_FLUSH);
  287 
  288         cc = &ic->ic_cmd.cmd_packet.cc;
  289         cc->cc_deviceno = htole16(sc->sc_hwunit);
  290         cc->cc_blockno = htole32(1);
  291         cc->cc_blockcnt = 0;
  292         cc->cc_addr = 0;
  293         cc->cc_nsgent = 0;
  294 
  295         ic->ic_cmdlen = (u_long)&cc->cc_sg - (u_long)&ic->ic_cmd;
  296         ic->ic_service = ICP_CACHESERVICE;
  297 
  298         rv = icp_ccb_wait(icp, ic, 30000);
  299         icp_ccb_free(icp, ic);
  300 
  301         return (rv);
  302 }
  303 
  304 void
  305 ld_icp_intr(struct icp_ccb *ic)
  306 {
  307         struct buf *bp;
  308         struct ld_icp_softc *sc;
  309         struct icp_softc *icp;
  310 
  311         bp = ic->ic_context;
  312         sc = (struct ld_icp_softc *)ic->ic_dv;
  313         icp = (struct icp_softc *)sc->sc_ld.sc_dv.dv_parent;
  314 
  315         if (ic->ic_status != ICP_S_OK) {
  316                 printf("%s: request failed; status=0x%04x\n",
  317                     ic->ic_dv->dv_xname, ic->ic_status);
  318                 bp->b_flags |= B_ERROR;
  319                 bp->b_error = EIO;
  320                 bp->b_resid = bp->b_bcount;
  321 
  322                 icp->icp_evt.size = sizeof(icp->icp_evt.eu.sync);
  323                 icp->icp_evt.eu.sync.ionode = icp->icp_dv.dv_unit;
  324                 icp->icp_evt.eu.sync.service = icp->icp_service;
  325                 icp->icp_evt.eu.sync.status = icp->icp_status;
  326                 icp->icp_evt.eu.sync.info = icp->icp_info;
  327                 icp->icp_evt.eu.sync.hostdrive = sc->sc_hwunit;
  328                 if (icp->icp_status >= 0x8000)
  329                         icp_store_event(icp, GDT_ES_SYNC, 0, &icp->icp_evt);
  330                 else
  331                         icp_store_event(icp, GDT_ES_SYNC, icp->icp_service,
  332                             &icp->icp_evt);
  333         } else
  334                 bp->b_resid = 0;
  335 
  336         icp_ccb_unmap(icp, ic);
  337         icp_ccb_free(icp, ic);
  338         lddone(&sc->sc_ld, bp);
  339 }
  340 
  341 void
  342 ld_icp_adjqparam(struct device *dv, int openings)
  343 {
  344 
  345         ldadjqparam((struct ld_softc *) dv, openings);
  346 }
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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
