1 /* $NetBSD: ld_amr.c,v 1.16 2008/04/28 20:23:55 martin Exp $ */ 2 3 /*- 4 * Copyright (c) 2002, 2003 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 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * AMI RAID controller front-end for ld(4) driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ld_amr.c,v 1.16 2008/04/28 20:23:55 martin Exp $"); 38 39 #include "rnd.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/buf.h> 46 #include <sys/bufq.h> 47 #include <sys/endian.h> 48 #include <sys/dkio.h> 49 #include <sys/disk.h> 50 #if NRND > 0 51 #include <sys/rnd.h> 52 #endif 53 54 #include <uvm/uvm_extern.h> 55 56 #include <sys/bus.h> 57 58 #include <dev/ldvar.h> 59 60 #include <dev/pci/pcireg.h> 61 #include <dev/pci/pcivar.h> 62 #include <dev/pci/amrreg.h> 63 #include <dev/pci/amrvar.h> 64 65 struct ld_amr_softc { 66 struct ld_softc sc_ld; 67 int sc_hwunit; 68 }; 69 70 static int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, 71 struct buf *); 72 static int ld_amr_dump(struct ld_softc *, void *, int, int); 73 static void ld_amr_handler(struct amr_ccb *); 74 static int ld_amr_start(struct ld_softc *, struct buf *); 75 76 static int 77 ld_amr_match(struct device *parent, struct cfdata *match, 78 void *aux) 79 { 80 81 return (1); 82 } 83 84 static void 85 ld_amr_attach(struct device *parent, struct device *self, void *aux) 86 { 87 struct amr_attach_args *amra; 88 struct ld_amr_softc *sc; 89 struct ld_softc *ld; 90 struct amr_softc *amr; 91 const char *statestr; 92 int happy; 93 94 sc = (struct ld_amr_softc *)self; 95 ld = &sc->sc_ld; 96 amr = (struct amr_softc *)parent; 97 amra = aux; 98 99 sc->sc_hwunit = amra->amra_unit; 100 ld->sc_maxxfer = amr_max_xfer; 101 ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV) 102 / amr->amr_numdrives; 103 ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; 104 ld->sc_secsize = AMR_SECTOR_SIZE; 105 ld->sc_start = ld_amr_start; 106 ld->sc_dump = ld_amr_dump; 107 108 if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) 109 ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; 110 111 /* 112 * Print status information and attach to the ld driver proper. 113 */ 114 statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state, 115 &happy); 116 if (happy) 117 ld->sc_flags = LDF_ENABLED; 118 aprint_normal(": RAID %d, %s\n", 119 amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, 120 statestr); 121 122 ldattach(ld); 123 } 124 125 CFATTACH_DECL(ld_amr, sizeof(struct ld_amr_softc), 126 ld_amr_match, ld_amr_attach, NULL, NULL); 127 128 static int 129 ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, 130 int blkno, int dowrite, struct buf *bp) 131 { 132 struct amr_ccb *ac; 133 struct amr_softc *amr; 134 struct amr_mailbox_cmd *mb; 135 int s, rv; 136 137 amr = (struct amr_softc *)device_parent(&sc->sc_ld.sc_dv); 138 139 if ((rv = amr_ccb_alloc(amr, &ac)) != 0) 140 return (rv); 141 142 mb = &ac->ac_cmd; 143 mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); 144 mb->mb_drive = sc->sc_hwunit; 145 mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); 146 mb->mb_lba = htole32(blkno); 147 148 rv = amr_ccb_map(amr, ac, data, datasize, 149 (dowrite ? AC_XFER_OUT : AC_XFER_IN)); 150 if (rv != 0) { 151 amr_ccb_free(amr, ac); 152 return (rv); 153 } 154 155 if (bp == NULL) { 156 /* 157 * Polled commands must not sit on the software queue. Wait 158 * up to 30 seconds for the command to complete. 159 */ 160 s = splbio(); 161 rv = amr_ccb_poll(amr, ac, 30000); 162 splx(s); 163 amr_ccb_unmap(amr, ac); 164 amr_ccb_free(amr, ac); 165 } else { 166 ac->ac_handler = ld_amr_handler; 167 ac->ac_context = bp; 168 ac->ac_dv = (struct device *)sc; 169 amr_ccb_enqueue(amr, ac); 170 rv = 0; 171 } 172 173 return (rv); 174 } 175 176 static int 177 ld_amr_start(struct ld_softc *ld, struct buf *bp) 178 { 179 180 return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, 181 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 182 } 183 184 static void 185 ld_amr_handler(struct amr_ccb *ac) 186 { 187 struct buf *bp; 188 struct ld_amr_softc *sc; 189 struct amr_softc *amr; 190 191 bp = ac->ac_context; 192 sc = (struct ld_amr_softc *)ac->ac_dv; 193 amr = (struct amr_softc *)device_parent(&sc->sc_ld.sc_dv); 194 195 if (ac->ac_status != AMR_STATUS_SUCCESS) { 196 printf("%s: cmd status 0x%02x\n", device_xname(&sc->sc_ld.sc_dv), 197 ac->ac_status); 198 199 bp->b_error = EIO; 200 bp->b_resid = bp->b_bcount; 201 } else 202 bp->b_resid = 0; 203 204 amr_ccb_unmap(amr, ac); 205 amr_ccb_free(amr, ac); 206 lddone(&sc->sc_ld, bp); 207 } 208 209 static int 210 ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 211 { 212 struct ld_amr_softc *sc; 213 214 sc = (struct ld_amr_softc *)ld; 215 216 return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, 217 NULL)); 218 } 219