1 /* $NetBSD: ld_amr.c,v 1.20 2010/11/13 13:52:07 uebayasi 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 1.20 2010/11/13 13:52:07 uebayasi 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 <sys/bus.h> 55 56 #include <dev/ldvar.h> 57 58 #include <dev/pci/pcireg.h> 59 #include <dev/pci/pcivar.h> 60 #include <dev/pci/amrreg.h> 61 #include <dev/pci/amrvar.h> 62 63 struct ld_amr_softc { 64 struct ld_softc sc_ld; 65 int sc_hwunit; 66 }; 67 68 static int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, 69 struct buf *); 70 static int ld_amr_dump(struct ld_softc *, void *, int, int); 71 static void ld_amr_handler(struct amr_ccb *); 72 static int ld_amr_start(struct ld_softc *, struct buf *); 73 74 static int 75 ld_amr_match(device_t parent, cfdata_t match, void *aux) 76 { 77 78 return (1); 79 } 80 81 static void 82 ld_amr_attach(device_t parent, device_t self, void *aux) 83 { 84 struct amr_attach_args *amra = aux; 85 struct ld_amr_softc *sc = device_private(self); 86 struct ld_softc *ld = &sc->sc_ld; 87 struct amr_softc *amr = device_private(parent); 88 const char *statestr; 89 int happy; 90 91 ld->sc_dv = self; 92 93 sc->sc_hwunit = amra->amra_unit; 94 ld->sc_maxxfer = amr_max_xfer; 95 ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV) 96 / amr->amr_numdrives; 97 ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; 98 ld->sc_secsize = AMR_SECTOR_SIZE; 99 ld->sc_start = ld_amr_start; 100 ld->sc_dump = ld_amr_dump; 101 102 if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) 103 ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; 104 105 /* 106 * Print status information and attach to the ld driver proper. 107 */ 108 statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state, 109 &happy); 110 if (happy) 111 ld->sc_flags = LDF_ENABLED; 112 aprint_normal(": RAID %d, %s\n", 113 amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, 114 statestr); 115 116 ldattach(ld); 117 } 118 119 CFATTACH_DECL_NEW(ld_amr, sizeof(struct ld_amr_softc), 120 ld_amr_match, ld_amr_attach, NULL, NULL); 121 122 static int 123 ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, 124 int blkno, int dowrite, struct buf *bp) 125 { 126 struct amr_ccb *ac; 127 struct amr_softc *amr; 128 struct amr_mailbox_cmd *mb; 129 int s, rv; 130 131 amr = device_private(device_parent(sc->sc_ld.sc_dv)); 132 133 if ((rv = amr_ccb_alloc(amr, &ac)) != 0) 134 return (rv); 135 136 mb = &ac->ac_cmd; 137 mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); 138 mb->mb_drive = sc->sc_hwunit; 139 mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); 140 mb->mb_lba = htole32(blkno); 141 142 rv = amr_ccb_map(amr, ac, data, datasize, 143 (dowrite ? AC_XFER_OUT : AC_XFER_IN)); 144 if (rv != 0) { 145 amr_ccb_free(amr, ac); 146 return (rv); 147 } 148 149 if (bp == NULL) { 150 /* 151 * Polled commands must not sit on the software queue. Wait 152 * up to 30 seconds for the command to complete. 153 */ 154 s = splbio(); 155 rv = amr_ccb_poll(amr, ac, 30000); 156 splx(s); 157 amr_ccb_unmap(amr, ac); 158 amr_ccb_free(amr, ac); 159 } else { 160 ac->ac_handler = ld_amr_handler; 161 ac->ac_context = bp; 162 ac->ac_dv = sc->sc_ld.sc_dv; 163 amr_ccb_enqueue(amr, ac); 164 rv = 0; 165 } 166 167 return (rv); 168 } 169 170 static int 171 ld_amr_start(struct ld_softc *ld, struct buf *bp) 172 { 173 174 return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, 175 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 176 } 177 178 static void 179 ld_amr_handler(struct amr_ccb *ac) 180 { 181 struct buf *bp; 182 struct ld_amr_softc *sc; 183 struct amr_softc *amr; 184 185 bp = ac->ac_context; 186 sc = device_private(ac->ac_dv); 187 amr = device_private(device_parent(sc->sc_ld.sc_dv)); 188 189 if (ac->ac_status != AMR_STATUS_SUCCESS) { 190 printf("%s: cmd status 0x%02x\n", device_xname(sc->sc_ld.sc_dv), 191 ac->ac_status); 192 193 bp->b_error = EIO; 194 bp->b_resid = bp->b_bcount; 195 } else 196 bp->b_resid = 0; 197 198 amr_ccb_unmap(amr, ac); 199 amr_ccb_free(amr, ac); 200 lddone(&sc->sc_ld, bp); 201 } 202 203 static int 204 ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 205 { 206 struct ld_amr_softc *sc; 207 208 sc = (struct ld_amr_softc *)ld; 209 210 return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, 211 NULL)); 212 } 213