ld_amr.c revision 1.13.12.2
1 /* $NetBSD: ld_amr.c,v 1.13.12.2 2007/07/29 12:50:23 ad 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 * 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 1.13.12.2 2007/07/29 12:50:23 ad 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/pci/pcireg.h> 68 #include <dev/pci/pcivar.h> 69 #include <dev/pci/amrreg.h> 70 #include <dev/pci/amrvar.h> 71 72 struct ld_amr_softc { 73 struct ld_softc sc_ld; 74 int sc_hwunit; 75 }; 76 77 static int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, 78 struct buf *); 79 static int ld_amr_dump(struct ld_softc *, void *, int, int); 80 static void ld_amr_handler(struct amr_ccb *); 81 static int ld_amr_start(struct ld_softc *, struct buf *); 82 83 static int 84 ld_amr_match(struct device *parent, struct cfdata *match, 85 void *aux) 86 { 87 88 return (1); 89 } 90 91 static void 92 ld_amr_attach(struct device *parent, struct device *self, void *aux) 93 { 94 struct amr_attach_args *amra; 95 struct ld_amr_softc *sc; 96 struct ld_softc *ld; 97 struct amr_softc *amr; 98 const char *statestr; 99 int happy; 100 101 sc = (struct ld_amr_softc *)self; 102 ld = &sc->sc_ld; 103 amr = (struct amr_softc *)parent; 104 amra = aux; 105 106 sc->sc_hwunit = amra->amra_unit; 107 ld->sc_maxxfer = amr_max_xfer; 108 ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV) 109 / amr->amr_numdrives; 110 ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; 111 ld->sc_secsize = AMR_SECTOR_SIZE; 112 ld->sc_start = ld_amr_start; 113 ld->sc_dump = ld_amr_dump; 114 115 if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) 116 ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; 117 118 /* 119 * Print status information and attach to the ld driver proper. 120 */ 121 statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state, 122 &happy); 123 if (happy) 124 ld->sc_flags = LDF_ENABLED; 125 aprint_normal(": RAID %d, %s\n", 126 amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, 127 statestr); 128 129 ldattach(ld); 130 } 131 132 CFATTACH_DECL(ld_amr, sizeof(struct ld_amr_softc), 133 ld_amr_match, ld_amr_attach, NULL, NULL); 134 135 static int 136 ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, 137 int blkno, int dowrite, struct buf *bp) 138 { 139 struct amr_ccb *ac; 140 struct amr_softc *amr; 141 struct amr_mailbox_cmd *mb; 142 int s, rv; 143 144 amr = (struct amr_softc *)device_parent(&sc->sc_ld.sc_dv); 145 146 if ((rv = amr_ccb_alloc(amr, &ac)) != 0) 147 return (rv); 148 149 mb = &ac->ac_cmd; 150 mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); 151 mb->mb_drive = sc->sc_hwunit; 152 mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); 153 mb->mb_lba = htole32(blkno); 154 155 rv = amr_ccb_map(amr, ac, data, datasize, 156 (dowrite ? AC_XFER_OUT : AC_XFER_IN)); 157 if (rv != 0) { 158 amr_ccb_free(amr, ac); 159 return (rv); 160 } 161 162 if (bp == NULL) { 163 /* 164 * Polled commands must not sit on the software queue. Wait 165 * up to 30 seconds for the command to complete. 166 */ 167 s = splbio(); 168 rv = amr_ccb_poll(amr, ac, 30000); 169 splx(s); 170 amr_ccb_unmap(amr, ac); 171 amr_ccb_free(amr, ac); 172 } else { 173 ac->ac_handler = ld_amr_handler; 174 ac->ac_context = bp; 175 ac->ac_dv = (struct device *)sc; 176 amr_ccb_enqueue(amr, ac); 177 rv = 0; 178 } 179 180 return (rv); 181 } 182 183 static int 184 ld_amr_start(struct ld_softc *ld, struct buf *bp) 185 { 186 187 return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, 188 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 189 } 190 191 static void 192 ld_amr_handler(struct amr_ccb *ac) 193 { 194 struct buf *bp; 195 struct ld_amr_softc *sc; 196 struct amr_softc *amr; 197 198 bp = ac->ac_context; 199 sc = (struct ld_amr_softc *)ac->ac_dv; 200 amr = (struct amr_softc *)device_parent(&sc->sc_ld.sc_dv); 201 202 if (ac->ac_status != AMR_STATUS_SUCCESS) { 203 printf("%s: cmd status 0x%02x\n", sc->sc_ld.sc_dv.dv_xname, 204 ac->ac_status); 205 206 bp->b_error = EIO; 207 bp->b_resid = bp->b_bcount; 208 } else 209 bp->b_resid = 0; 210 211 amr_ccb_unmap(amr, ac); 212 amr_ccb_free(amr, ac); 213 lddone(&sc->sc_ld, bp); 214 } 215 216 static int 217 ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 218 { 219 struct ld_amr_softc *sc; 220 221 sc = (struct ld_amr_softc *)ld; 222 223 return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, 224 NULL)); 225 } 226
Indexes created Sun Oct 12 09:09:55 GMT 2025