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ld_amr.c revision 1.5
      1  1.5       ad /*	$NetBSD: ld_amr.c,v 1.5 2003/05/04 16:15:36 ad Exp $	*/
      2  1.1       ad 
      3  1.1       ad /*-
      4  1.5       ad  * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc.
      5  1.1       ad  * All rights reserved.
      6  1.1       ad  *
      7  1.1       ad  * This code is derived from software contributed to The NetBSD Foundation
      8  1.1       ad  * by Andrew Doran.
      9  1.1       ad  *
     10  1.1       ad  * Redistribution and use in source and binary forms, with or without
     11  1.1       ad  * modification, are permitted provided that the following conditions
     12  1.1       ad  * are met:
     13  1.1       ad  * 1. Redistributions of source code must retain the above copyright
     14  1.1       ad  *    notice, this list of conditions and the following disclaimer.
     15  1.1       ad  * 2. Redistributions in binary form must reproduce the above copyright
     16  1.1       ad  *    notice, this list of conditions and the following disclaimer in the
     17  1.1       ad  *    documentation and/or other materials provided with the distribution.
     18  1.1       ad  * 3. All advertising materials mentioning features or use of this software
     19  1.1       ad  *    must display the following acknowledgement:
     20  1.1       ad  *        This product includes software developed by the NetBSD
     21  1.1       ad  *        Foundation, Inc. and its contributors.
     22  1.1       ad  * 4. Neither the name of The NetBSD Foundation nor the names of its
     23  1.1       ad  *    contributors may be used to endorse or promote products derived
     24  1.1       ad  *    from this software without specific prior written permission.
     25  1.1       ad  *
     26  1.1       ad  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     27  1.1       ad  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     28  1.1       ad  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     29  1.1       ad  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     30  1.1       ad  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     31  1.1       ad  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     32  1.1       ad  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     33  1.1       ad  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     34  1.1       ad  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     35  1.1       ad  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     36  1.1       ad  * POSSIBILITY OF SUCH DAMAGE.
     37  1.1       ad  */
     38  1.1       ad 
     39  1.1       ad /*
     40  1.1       ad  * AMI RAID controller front-end for ld(4) driver.
     41  1.1       ad  */
     42  1.1       ad 
     43  1.1       ad #include <sys/cdefs.h>
     44  1.5       ad __KERNEL_RCSID(0, "$NetBSD: ld_amr.c,v 1.5 2003/05/04 16:15:36 ad Exp $");
     45  1.1       ad 
     46  1.1       ad #include "rnd.h"
     47  1.1       ad 
     48  1.1       ad #include <sys/param.h>
     49  1.1       ad #include <sys/systm.h>
     50  1.1       ad #include <sys/kernel.h>
     51  1.1       ad #include <sys/device.h>
     52  1.1       ad #include <sys/buf.h>
     53  1.1       ad #include <sys/endian.h>
     54  1.1       ad #include <sys/dkio.h>
     55  1.1       ad #include <sys/disk.h>
     56  1.1       ad #if NRND > 0
     57  1.1       ad #include <sys/rnd.h>
     58  1.1       ad #endif
     59  1.1       ad 
     60  1.1       ad #include <uvm/uvm_extern.h>
     61  1.1       ad 
     62  1.1       ad #include <machine/bus.h>
     63  1.1       ad 
     64  1.1       ad #include <dev/ldvar.h>
     65  1.1       ad 
     66  1.5       ad #include <dev/pci/pcireg.h>
     67  1.5       ad #include <dev/pci/pcivar.h>
     68  1.1       ad #include <dev/pci/amrreg.h>
     69  1.1       ad #include <dev/pci/amrvar.h>
     70  1.1       ad 
     71  1.1       ad struct ld_amr_softc {
     72  1.1       ad 	struct	ld_softc sc_ld;
     73  1.1       ad 	int	sc_hwunit;
     74  1.1       ad };
     75  1.1       ad 
     76  1.1       ad void	ld_amr_attach(struct device *, struct device *, void *);
     77  1.1       ad int	ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int,
     78  1.1       ad 		     struct buf *);
     79  1.1       ad int	ld_amr_dump(struct ld_softc *, void *, int, int);
     80  1.1       ad void	ld_amr_handler(struct amr_ccb *);
     81  1.1       ad int	ld_amr_match(struct device *, struct cfdata *, void *);
     82  1.1       ad int	ld_amr_start(struct ld_softc *, struct buf *);
     83  1.1       ad 
     84  1.3  thorpej CFATTACH_DECL(ld_amr, sizeof(struct ld_amr_softc),
     85  1.4  thorpej     ld_amr_match, ld_amr_attach, NULL, NULL);
     86  1.1       ad 
     87  1.1       ad int
     88  1.1       ad ld_amr_match(struct device *parent, struct cfdata *match, void *aux)
     89  1.1       ad {
     90  1.1       ad 
     91  1.1       ad 	return (1);
     92  1.1       ad }
     93  1.1       ad 
     94  1.1       ad void
     95  1.1       ad ld_amr_attach(struct device *parent, struct device *self, void *aux)
     96  1.1       ad {
     97  1.1       ad 	struct amr_attach_args *amra;
     98  1.1       ad 	struct ld_amr_softc *sc;
     99  1.1       ad 	struct ld_softc *ld;
    100  1.1       ad 	struct amr_softc *amr;
    101  1.1       ad 	const char *statestr;
    102  1.5       ad 	int happy;
    103  1.1       ad 
    104  1.1       ad 	sc = (struct ld_amr_softc *)self;
    105  1.1       ad 	ld = &sc->sc_ld;
    106  1.1       ad 	amr = (struct amr_softc *)parent;
    107  1.1       ad 	amra = aux;
    108  1.1       ad 
    109  1.1       ad 	sc->sc_hwunit = amra->amra_unit;
    110  1.5       ad 	ld->sc_maxxfer = amr_max_xfer;
    111  1.5       ad 	ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV)
    112  1.5       ad 	    / amr->amr_numdrives;
    113  1.1       ad 	ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size;
    114  1.1       ad 	ld->sc_secsize = AMR_SECTOR_SIZE;
    115  1.1       ad 	ld->sc_start = ld_amr_start;
    116  1.1       ad 	ld->sc_dump = ld_amr_dump;
    117  1.1       ad 
    118  1.1       ad 	if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU)
    119  1.1       ad 		ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU;
    120  1.1       ad 
    121  1.1       ad 	/*
    122  1.1       ad 	 * Print status information and attach to the ld driver proper.
    123  1.1       ad 	 */
    124  1.5       ad 	statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state,
    125  1.5       ad 	    &happy);
    126  1.5       ad 	if (happy)
    127  1.1       ad 		ld->sc_flags = LDF_ENABLED;
    128  1.5       ad 	aprint_normal(": RAID %d, %s\n",
    129  1.1       ad 	    amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK,
    130  1.1       ad 	    statestr);
    131  1.1       ad 
    132  1.1       ad 	ldattach(ld);
    133  1.1       ad }
    134  1.1       ad 
    135  1.1       ad int
    136  1.1       ad ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize,
    137  1.1       ad 	     int blkno, int dowrite, struct buf *bp)
    138  1.1       ad {
    139  1.1       ad 	struct amr_ccb *ac;
    140  1.1       ad 	struct amr_softc *amr;
    141  1.5       ad 	struct amr_mailbox_cmd *mb;
    142  1.1       ad 	int s, rv;
    143  1.1       ad 
    144  1.1       ad 	amr = (struct amr_softc *)sc->sc_ld.sc_dv.dv_parent;
    145  1.1       ad 
    146  1.1       ad 	if ((rv = amr_ccb_alloc(amr, &ac)) != 0)
    147  1.1       ad 		return (rv);
    148  1.1       ad 
    149  1.5       ad 	mb = &ac->ac_cmd;
    150  1.1       ad 	mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD);
    151  1.1       ad 	mb->mb_drive = sc->sc_hwunit;
    152  1.1       ad 	mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE);
    153  1.1       ad 	mb->mb_lba = htole32(blkno);
    154  1.1       ad 
    155  1.1       ad 	if ((rv = amr_ccb_map(amr, ac, data, datasize, dowrite)) != 0) {
    156  1.1       ad 		amr_ccb_free(amr, ac);
    157  1.1       ad 		return (rv);
    158  1.1       ad 	}
    159  1.1       ad 
    160  1.1       ad 	if (bp == NULL) {
    161  1.1       ad 		/*
    162  1.1       ad 		 * Polled commands must not sit on the software queue.  Wait
    163  1.1       ad 		 * up to 30 seconds for the command to complete.
    164  1.1       ad 		 */
    165  1.1       ad 		s = splbio();
    166  1.1       ad 		rv = amr_ccb_poll(amr, ac, 30000);
    167  1.1       ad 		splx(s);
    168  1.1       ad 		amr_ccb_unmap(amr, ac);
    169  1.1       ad 		amr_ccb_free(amr, ac);
    170  1.1       ad 	} else {
    171  1.1       ad 		ac->ac_handler = ld_amr_handler;
    172  1.1       ad 		ac->ac_context = bp;
    173  1.1       ad 		ac->ac_dv = (struct device *)sc;
    174  1.1       ad 		amr_ccb_enqueue(amr, ac);
    175  1.1       ad 		rv = 0;
    176  1.1       ad 	}
    177  1.1       ad 
    178  1.1       ad 	return (rv);
    179  1.1       ad }
    180  1.1       ad 
    181  1.1       ad int
    182  1.1       ad ld_amr_start(struct ld_softc *ld, struct buf *bp)
    183  1.1       ad {
    184  1.1       ad 
    185  1.1       ad 	return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data,
    186  1.1       ad 	    bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
    187  1.1       ad }
    188  1.1       ad 
    189  1.1       ad void
    190  1.1       ad ld_amr_handler(struct amr_ccb *ac)
    191  1.1       ad {
    192  1.1       ad 	struct buf *bp;
    193  1.1       ad 	struct ld_amr_softc *sc;
    194  1.1       ad 	struct amr_softc *amr;
    195  1.1       ad 
    196  1.1       ad 	bp = ac->ac_context;
    197  1.1       ad 	sc = (struct ld_amr_softc *)ac->ac_dv;
    198  1.1       ad 	amr = (struct amr_softc *)sc->sc_ld.sc_dv.dv_parent;
    199  1.1       ad 
    200  1.1       ad 	if (ac->ac_status != AMR_STATUS_SUCCESS) {
    201  1.1       ad 		printf("%s: cmd status 0x%02x\n", sc->sc_ld.sc_dv.dv_xname,
    202  1.1       ad 		    ac->ac_status);
    203  1.1       ad 
    204  1.1       ad 		bp->b_flags |= B_ERROR;
    205  1.1       ad 		bp->b_error = EIO;
    206  1.1       ad 		bp->b_resid = bp->b_bcount;
    207  1.1       ad 	} else
    208  1.1       ad 		bp->b_resid = 0;
    209  1.1       ad 
    210  1.1       ad 	amr_ccb_unmap(amr, ac);
    211  1.1       ad 	amr_ccb_free(amr, ac);
    212  1.1       ad 	lddone(&sc->sc_ld, bp);
    213  1.1       ad }
    214  1.1       ad 
    215  1.1       ad int
    216  1.1       ad ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
    217  1.1       ad {
    218  1.1       ad 	struct ld_amr_softc *sc;
    219  1.1       ad 
    220  1.1       ad 	sc = (struct ld_amr_softc *)ld;
    221  1.1       ad 
    222  1.1       ad 	return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1,
    223  1.1       ad 	    NULL));
    224  1.1       ad }
    225