ld_amr.c revision 1.23
1 /* $NetBSD: ld_amr.c,v 1.23 2015/04/13 16:33:25 riastradh 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 1.23 2015/04/13 16:33:25 riastradh 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 49 #include <sys/bus.h> 50 51 #include <dev/ldvar.h> 52 53 #include <dev/pci/pcireg.h> 54 #include <dev/pci/pcivar.h> 55 #include <dev/pci/amrreg.h> 56 #include <dev/pci/amrvar.h> 57 58 struct ld_amr_softc { 59 struct ld_softc sc_ld; 60 int sc_hwunit; 61 }; 62 63 static int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, 64 struct buf *); 65 static int ld_amr_dump(struct ld_softc *, void *, int, int); 66 static void ld_amr_handler(struct amr_ccb *); 67 static int ld_amr_start(struct ld_softc *, struct buf *); 68 69 static int 70 ld_amr_match(device_t parent, cfdata_t match, void *aux) 71 { 72 return (1); 73 } 74 75 static void 76 ld_amr_attach(device_t parent, device_t self, void *aux) 77 { 78 struct amr_attach_args *amra = aux; 79 struct ld_amr_softc *sc = device_private(self); 80 struct ld_softc *ld = &sc->sc_ld; 81 struct amr_softc *amr = device_private(parent); 82 const char *statestr; 83 int happy; 84 85 ld->sc_dv = self; 86 87 sc->sc_hwunit = amra->amra_unit; 88 ld->sc_maxxfer = amr_max_xfer; 89 ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV) 90 / amr->amr_numdrives; 91 ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; 92 ld->sc_secsize = AMR_SECTOR_SIZE; 93 ld->sc_start = ld_amr_start; 94 ld->sc_dump = ld_amr_dump; 95 96 if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) 97 ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; 98 99 /* 100 * Print status information and attach to the ld driver proper. 101 */ 102 statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state, 103 &happy); 104 if (happy) 105 ld->sc_flags = LDF_ENABLED; 106 aprint_normal(": RAID %d, %s\n", 107 amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, 108 statestr); 109 110 ldattach(ld); 111 } 112 113 CFATTACH_DECL_NEW(ld_amr, sizeof(struct ld_amr_softc), 114 ld_amr_match, ld_amr_attach, NULL, NULL); 115 116 static int 117 ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, 118 int blkno, int dowrite, struct buf *bp) 119 { 120 struct amr_ccb *ac; 121 struct amr_softc *amr; 122 struct amr_mailbox_cmd *mb; 123 int rv; 124 125 amr = device_private(device_parent(sc->sc_ld.sc_dv)); 126 127 if ((rv = amr_ccb_alloc(amr, &ac)) != 0) 128 return (rv); 129 130 mb = &ac->ac_cmd; 131 mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); 132 mb->mb_drive = sc->sc_hwunit; 133 mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); 134 mb->mb_lba = htole32(blkno); 135 136 rv = amr_ccb_map(amr, ac, data, datasize, 137 (dowrite ? AC_XFER_OUT : AC_XFER_IN)); 138 if (rv != 0) { 139 amr_ccb_free(amr, ac); 140 return (rv); 141 } 142 143 if (bp == NULL) { 144 /* 145 * Polled commands must not sit on the software queue. Wait 146 * up to 30 seconds for the command to complete. 147 */ 148 rv = amr_ccb_poll(amr, ac, 30000); 149 amr_ccb_unmap(amr, ac); 150 amr_ccb_free(amr, ac); 151 } else { 152 ac->ac_handler = ld_amr_handler; 153 ac->ac_context = bp; 154 ac->ac_dv = sc->sc_ld.sc_dv; 155 amr_ccb_enqueue(amr, ac); 156 rv = 0; 157 } 158 159 return (rv); 160 } 161 162 static int 163 ld_amr_start(struct ld_softc *ld, struct buf *bp) 164 { 165 return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, 166 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 167 } 168 169 static void 170 ld_amr_handler(struct amr_ccb *ac) 171 { 172 struct buf *bp; 173 struct ld_amr_softc *sc; 174 struct amr_softc *amr; 175 176 bp = ac->ac_context; 177 sc = device_private(ac->ac_dv); 178 amr = device_private(device_parent(sc->sc_ld.sc_dv)); 179 180 if (ac->ac_status != AMR_STATUS_SUCCESS) { 181 printf("%s: cmd status 0x%02x\n", device_xname(sc->sc_ld.sc_dv), 182 ac->ac_status); 183 184 bp->b_error = EIO; 185 bp->b_resid = bp->b_bcount; 186 } else 187 bp->b_resid = 0; 188 189 amr_ccb_unmap(amr, ac); 190 amr_ccb_free(amr, ac); 191 lddone(&sc->sc_ld, bp); 192 } 193 194 static int 195 ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 196 { 197 struct ld_amr_softc *sc; 198 199 sc = (struct ld_amr_softc *)ld; 200 201 return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, 202 NULL)); 203 } 204
Indexes created Sun Oct 12 09:09:55 GMT 2025