ld_amr.c revision 1.4
1 /* $NetBSD: ld_amr.c,v 1.4 2002/10/02 16:51:43 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 * AMI RAID controller front-end for ld(4) driver. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: ld_amr.c,v 1.4 2002/10/02 16:51:43 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/pci/amrreg.h> 67 #include <dev/pci/amrvar.h> 68 69 struct ld_amr_softc { 70 struct ld_softc sc_ld; 71 int sc_hwunit; 72 }; 73 74 void ld_amr_attach(struct device *, struct device *, void *); 75 int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, 76 struct buf *); 77 int ld_amr_dump(struct ld_softc *, void *, int, int); 78 void ld_amr_handler(struct amr_ccb *); 79 int ld_amr_match(struct device *, struct cfdata *, void *); 80 int ld_amr_start(struct ld_softc *, struct buf *); 81 82 CFATTACH_DECL(ld_amr, sizeof(struct ld_amr_softc), 83 ld_amr_match, ld_amr_attach, NULL, NULL); 84 85 struct { 86 const char *ds_descr; 87 int ds_enable; 88 } static const ld_amr_dstate[] = { 89 { "offline", 0 }, 90 { "degraded", LDF_ENABLED }, 91 { "optimal", LDF_ENABLED }, 92 { "online", LDF_ENABLED }, 93 { "failed", 0 }, 94 { "rebuilding", LDF_ENABLED }, 95 { "hotspare", 0 }, 96 }; 97 98 int 99 ld_amr_match(struct device *parent, struct cfdata *match, void *aux) 100 { 101 102 return (1); 103 } 104 105 void 106 ld_amr_attach(struct device *parent, struct device *self, void *aux) 107 { 108 struct amr_attach_args *amra; 109 struct ld_amr_softc *sc; 110 struct ld_softc *ld; 111 struct amr_softc *amr; 112 const char *statestr; 113 int state; 114 115 sc = (struct ld_amr_softc *)self; 116 ld = &sc->sc_ld; 117 amr = (struct amr_softc *)parent; 118 amra = aux; 119 120 sc->sc_hwunit = amra->amra_unit; 121 ld->sc_maxxfer = AMR_MAX_XFER; 122 ld->sc_maxqueuecnt = amr->amr_maxqueuecnt / amr->amr_numdrives; 123 ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; 124 ld->sc_secsize = AMR_SECTOR_SIZE; 125 ld->sc_start = ld_amr_start; 126 ld->sc_dump = ld_amr_dump; 127 128 if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) 129 ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; 130 131 /* 132 * Print status information and attach to the ld driver proper. 133 */ 134 state = AMR_DRV_CURSTATE(amr->amr_drive[sc->sc_hwunit].al_state); 135 if (state >= sizeof(ld_amr_dstate) / sizeof(ld_amr_dstate[0])) { 136 ld->sc_flags = LDF_ENABLED; 137 statestr = "status unknown"; 138 } else { 139 ld->sc_flags = ld_amr_dstate[state].ds_enable; 140 statestr = ld_amr_dstate[state].ds_descr; 141 } 142 143 printf(": RAID %d, %s\n", 144 amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, 145 statestr); 146 147 ldattach(ld); 148 } 149 150 int 151 ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, 152 int blkno, int dowrite, struct buf *bp) 153 { 154 struct amr_ccb *ac; 155 struct amr_softc *amr; 156 struct amr_mailbox *mb; 157 int s, rv; 158 159 amr = (struct amr_softc *)sc->sc_ld.sc_dv.dv_parent; 160 161 if ((rv = amr_ccb_alloc(amr, &ac)) != 0) 162 return (rv); 163 164 mb = &ac->ac_mbox; 165 mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); 166 mb->mb_drive = sc->sc_hwunit; 167 mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); 168 mb->mb_lba = htole32(blkno); 169 170 if ((rv = amr_ccb_map(amr, ac, data, datasize, dowrite)) != 0) { 171 amr_ccb_free(amr, ac); 172 return (rv); 173 } 174 175 if (bp == NULL) { 176 /* 177 * Polled commands must not sit on the software queue. Wait 178 * up to 30 seconds for the command to complete. 179 */ 180 s = splbio(); 181 rv = amr_ccb_poll(amr, ac, 30000); 182 splx(s); 183 amr_ccb_unmap(amr, ac); 184 amr_ccb_free(amr, ac); 185 } else { 186 ac->ac_handler = ld_amr_handler; 187 ac->ac_context = bp; 188 ac->ac_dv = (struct device *)sc; 189 amr_ccb_enqueue(amr, ac); 190 rv = 0; 191 } 192 193 return (rv); 194 } 195 196 int 197 ld_amr_start(struct ld_softc *ld, struct buf *bp) 198 { 199 200 return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, 201 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 202 } 203 204 void 205 ld_amr_handler(struct amr_ccb *ac) 206 { 207 struct buf *bp; 208 struct ld_amr_softc *sc; 209 struct amr_softc *amr; 210 211 bp = ac->ac_context; 212 sc = (struct ld_amr_softc *)ac->ac_dv; 213 amr = (struct amr_softc *)sc->sc_ld.sc_dv.dv_parent; 214 215 if (ac->ac_status != AMR_STATUS_SUCCESS) { 216 printf("%s: cmd status 0x%02x\n", sc->sc_ld.sc_dv.dv_xname, 217 ac->ac_status); 218 219 bp->b_flags |= B_ERROR; 220 bp->b_error = EIO; 221 bp->b_resid = bp->b_bcount; 222 } else 223 bp->b_resid = 0; 224 225 amr_ccb_unmap(amr, ac); 226 amr_ccb_free(amr, ac); 227 lddone(&sc->sc_ld, bp); 228 } 229 230 int 231 ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 232 { 233 struct ld_amr_softc *sc; 234 235 sc = (struct ld_amr_softc *)ld; 236 237 return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, 238 NULL)); 239 } 240
Indexes created Tue Sep 23 14:10:03 GMT 2025