ld_amr.c revision 1.21
1 /* $NetBSD: ld_amr.c,v 1.21 2012/02/02 19:43:06 tls 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 1.21 2012/02/02 19:43:06 tls Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/buf.h> 44 #include <sys/bufq.h> 45 #include <sys/endian.h> 46 #include <sys/dkio.h> 47 #include <sys/disk.h> 48 #include <sys/rnd.h> 49 50 #include <sys/bus.h> 51 52 #include <dev/ldvar.h> 53 54 #include <dev/pci/pcireg.h> 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/amrreg.h> 57 #include <dev/pci/amrvar.h> 58 59 struct ld_amr_softc { 60 struct ld_softc sc_ld; 61 int sc_hwunit; 62 }; 63 64 static int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, 65 struct buf *); 66 static int ld_amr_dump(struct ld_softc *, void *, int, int); 67 static void ld_amr_handler(struct amr_ccb *); 68 static int ld_amr_start(struct ld_softc *, struct buf *); 69 70 static int 71 ld_amr_match(device_t parent, cfdata_t match, void *aux) 72 { 73 74 return (1); 75 } 76 77 static void 78 ld_amr_attach(device_t parent, device_t self, void *aux) 79 { 80 struct amr_attach_args *amra = aux; 81 struct ld_amr_softc *sc = device_private(self); 82 struct ld_softc *ld = &sc->sc_ld; 83 struct amr_softc *amr = device_private(parent); 84 const char *statestr; 85 int happy; 86 87 ld->sc_dv = self; 88 89 sc->sc_hwunit = amra->amra_unit; 90 ld->sc_maxxfer = amr_max_xfer; 91 ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV) 92 / amr->amr_numdrives; 93 ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; 94 ld->sc_secsize = AMR_SECTOR_SIZE; 95 ld->sc_start = ld_amr_start; 96 ld->sc_dump = ld_amr_dump; 97 98 if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) 99 ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; 100 101 /* 102 * Print status information and attach to the ld driver proper. 103 */ 104 statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state, 105 &happy); 106 if (happy) 107 ld->sc_flags = LDF_ENABLED; 108 aprint_normal(": RAID %d, %s\n", 109 amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, 110 statestr); 111 112 ldattach(ld); 113 } 114 115 CFATTACH_DECL_NEW(ld_amr, sizeof(struct ld_amr_softc), 116 ld_amr_match, ld_amr_attach, NULL, NULL); 117 118 static int 119 ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, 120 int blkno, int dowrite, struct buf *bp) 121 { 122 struct amr_ccb *ac; 123 struct amr_softc *amr; 124 struct amr_mailbox_cmd *mb; 125 int s, rv; 126 127 amr = device_private(device_parent(sc->sc_ld.sc_dv)); 128 129 if ((rv = amr_ccb_alloc(amr, &ac)) != 0) 130 return (rv); 131 132 mb = &ac->ac_cmd; 133 mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); 134 mb->mb_drive = sc->sc_hwunit; 135 mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); 136 mb->mb_lba = htole32(blkno); 137 138 rv = amr_ccb_map(amr, ac, data, datasize, 139 (dowrite ? AC_XFER_OUT : AC_XFER_IN)); 140 if (rv != 0) { 141 amr_ccb_free(amr, ac); 142 return (rv); 143 } 144 145 if (bp == NULL) { 146 /* 147 * Polled commands must not sit on the software queue. Wait 148 * up to 30 seconds for the command to complete. 149 */ 150 s = splbio(); 151 rv = amr_ccb_poll(amr, ac, 30000); 152 splx(s); 153 amr_ccb_unmap(amr, ac); 154 amr_ccb_free(amr, ac); 155 } else { 156 ac->ac_handler = ld_amr_handler; 157 ac->ac_context = bp; 158 ac->ac_dv = sc->sc_ld.sc_dv; 159 amr_ccb_enqueue(amr, ac); 160 rv = 0; 161 } 162 163 return (rv); 164 } 165 166 static int 167 ld_amr_start(struct ld_softc *ld, struct buf *bp) 168 { 169 170 return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, 171 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 172 } 173 174 static void 175 ld_amr_handler(struct amr_ccb *ac) 176 { 177 struct buf *bp; 178 struct ld_amr_softc *sc; 179 struct amr_softc *amr; 180 181 bp = ac->ac_context; 182 sc = device_private(ac->ac_dv); 183 amr = device_private(device_parent(sc->sc_ld.sc_dv)); 184 185 if (ac->ac_status != AMR_STATUS_SUCCESS) { 186 printf("%s: cmd status 0x%02x\n", device_xname(sc->sc_ld.sc_dv), 187 ac->ac_status); 188 189 bp->b_error = EIO; 190 bp->b_resid = bp->b_bcount; 191 } else 192 bp->b_resid = 0; 193 194 amr_ccb_unmap(amr, ac); 195 amr_ccb_free(amr, ac); 196 lddone(&sc->sc_ld, bp); 197 } 198 199 static int 200 ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 201 { 202 struct ld_amr_softc *sc; 203 204 sc = (struct ld_amr_softc *)ld; 205 206 return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, 207 NULL)); 208 } 209
Indexes created Sun Oct 12 09:09:55 GMT 2025