FreeBSD/Linux Kernel Cross Reference
sys/dev/pci/ld_amr.c

     /*      $NetBSD: ld_amr.c,v 1.5 2003/05/04 16:15:36 ad Exp $    */
     
     /*-
      * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Andrew Doran.
      *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *        This product includes software developed by the NetBSD
     *        Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    /*
     * AMI RAID controller front-end for ld(4) driver.
     */
    
    #include <sys/cdefs.h>
    __KERNEL_RCSID(0, "$NetBSD: ld_amr.c,v 1.5 2003/05/04 16:15:36 ad Exp $");
    
    #include "rnd.h"
    
    #include <sys/param.h>
    #include <sys/systm.h>
    #include <sys/kernel.h>
    #include <sys/device.h>
    #include <sys/buf.h>
    #include <sys/endian.h>
    #include <sys/dkio.h>
    #include <sys/disk.h>
    #if NRND > 0
    #include <sys/rnd.h>
    #endif
    
    #include <uvm/uvm_extern.h>
    
    #include <machine/bus.h>
    
    #include <dev/ldvar.h>
    
    #include <dev/pci/pcireg.h>
    #include <dev/pci/pcivar.h>
    #include <dev/pci/amrreg.h>
    #include <dev/pci/amrvar.h>
    
    struct ld_amr_softc {
            struct  ld_softc sc_ld;
            int     sc_hwunit;
    };
    
    void    ld_amr_attach(struct device *, struct device *, void *);
    int     ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int,
                         struct buf *);
    int     ld_amr_dump(struct ld_softc *, void *, int, int);
    void    ld_amr_handler(struct amr_ccb *);
    int     ld_amr_match(struct device *, struct cfdata *, void *);
    int     ld_amr_start(struct ld_softc *, struct buf *);
    
    CFATTACH_DECL(ld_amr, sizeof(struct ld_amr_softc),
        ld_amr_match, ld_amr_attach, NULL, NULL);
    
    int
    ld_amr_match(struct device *parent, struct cfdata *match, void *aux)
    {
    
            return (1);
    }
    
    void
    ld_amr_attach(struct device *parent, struct device *self, void *aux)
    {
            struct amr_attach_args *amra;
            struct ld_amr_softc *sc;
            struct ld_softc *ld;
           struct amr_softc *amr;
           const char *statestr;
           int happy;
   
           sc = (struct ld_amr_softc *)self;
           ld = &sc->sc_ld;
           amr = (struct amr_softc *)parent;
           amra = aux;
   
           sc->sc_hwunit = amra->amra_unit;
           ld->sc_maxxfer = amr_max_xfer;
           ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV)
               / amr->amr_numdrives;
           ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size;
           ld->sc_secsize = AMR_SECTOR_SIZE;
           ld->sc_start = ld_amr_start;
           ld->sc_dump = ld_amr_dump;
   
           if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU)
                   ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU;
   
           /*
            * Print status information and attach to the ld driver proper.
            */
           statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state,
               &happy);
           if (happy)
                   ld->sc_flags = LDF_ENABLED;
           aprint_normal(": RAID %d, %s\n",
               amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK,
               statestr);
   
           ldattach(ld);
   }
   
   int
   ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize,
                int blkno, int dowrite, struct buf *bp)
   {
           struct amr_ccb *ac;
           struct amr_softc *amr;
           struct amr_mailbox_cmd *mb;
           int s, rv;
   
           amr = (struct amr_softc *)sc->sc_ld.sc_dv.dv_parent;
   
           if ((rv = amr_ccb_alloc(amr, &ac)) != 0)
                   return (rv);
   
           mb = &ac->ac_cmd;
           mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD);
           mb->mb_drive = sc->sc_hwunit;
           mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE);
           mb->mb_lba = htole32(blkno);
   
           if ((rv = amr_ccb_map(amr, ac, data, datasize, dowrite)) != 0) {
                   amr_ccb_free(amr, ac);
                   return (rv);
           }
   
           if (bp == NULL) {
                   /*
                    * Polled commands must not sit on the software queue.  Wait
                    * up to 30 seconds for the command to complete.
                    */
                   s = splbio();
                   rv = amr_ccb_poll(amr, ac, 30000);
                   splx(s);
                   amr_ccb_unmap(amr, ac);
                   amr_ccb_free(amr, ac);
           } else {
                   ac->ac_handler = ld_amr_handler;
                   ac->ac_context = bp;
                   ac->ac_dv = (struct device *)sc;
                   amr_ccb_enqueue(amr, ac);
                   rv = 0;
           }
   
           return (rv);
   }
   
   int
   ld_amr_start(struct ld_softc *ld, struct buf *bp)
   {
   
           return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data,
               bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
   }
   
   void
   ld_amr_handler(struct amr_ccb *ac)
   {
           struct buf *bp;
           struct ld_amr_softc *sc;
           struct amr_softc *amr;
   
           bp = ac->ac_context;
           sc = (struct ld_amr_softc *)ac->ac_dv;
           amr = (struct amr_softc *)sc->sc_ld.sc_dv.dv_parent;
   
           if (ac->ac_status != AMR_STATUS_SUCCESS) {
                   printf("%s: cmd status 0x%02x\n", sc->sc_ld.sc_dv.dv_xname,
                       ac->ac_status);
   
                   bp->b_flags |= B_ERROR;
                   bp->b_error = EIO;
                   bp->b_resid = bp->b_bcount;
           } else
                   bp->b_resid = 0;
   
           amr_ccb_unmap(amr, ac);
           amr_ccb_free(amr, ac);
           lddone(&sc->sc_ld, bp);
   }
   
   int
   ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
   {
           struct ld_amr_softc *sc;
   
           sc = (struct ld_amr_softc *)ld;
   
           return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1,
               NULL));
   }

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