ld_twe.c revision 1.15
1 /* $NetBSD: ld_twe.c,v 1.15 2003/09/21 19:33:10 thorpej Exp $ */ 2 3 /*- 4 * Copyright (c) 2000, 2001, 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; and by Jason R. Thorpe of Wasabi Systems, Inc. 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 * 3ware "Escalade" RAID controller front-end for ld(4) driver. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: ld_twe.c,v 1.15 2003/09/21 19:33:10 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 <machine/bus.h> 61 62 #include <uvm/uvm_extern.h> 63 64 #include <dev/ldvar.h> 65 66 #include <dev/pci/twereg.h> 67 #include <dev/pci/twevar.h> 68 69 struct ld_twe_softc { 70 struct ld_softc sc_ld; 71 int sc_hwunit; 72 }; 73 74 static void ld_twe_attach(struct device *, struct device *, void *); 75 static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, 76 struct buf *); 77 static int ld_twe_dump(struct ld_softc *, void *, int, int); 78 static void ld_twe_handler(struct twe_ccb *, int); 79 static int ld_twe_match(struct device *, struct cfdata *, void *); 80 static int ld_twe_start(struct ld_softc *, struct buf *); 81 82 CFATTACH_DECL(ld_twe, sizeof(struct ld_twe_softc), 83 ld_twe_match, ld_twe_attach, NULL, NULL); 84 85 static int 86 ld_twe_match(struct device *parent, struct cfdata *match, void *aux) 87 { 88 89 return (1); 90 } 91 92 static void 93 ld_twe_attach(struct device *parent, struct device *self, void *aux) 94 { 95 struct twe_attach_args *twea; 96 struct ld_twe_softc *sc; 97 struct ld_softc *ld; 98 struct twe_softc *twe; 99 struct twe_drive *td; 100 const char *typestr, *stripestr, *statstr; 101 char unktype[16], stripebuf[32], unkstat[32]; 102 int error; 103 uint8_t status; 104 105 sc = (struct ld_twe_softc *)self; 106 ld = &sc->sc_ld; 107 twe = (struct twe_softc *)parent; 108 twea = aux; 109 td = &twe->sc_units[twea->twea_unit]; 110 111 sc->sc_hwunit = twea->twea_unit; 112 ld->sc_flags = LDF_ENABLED; 113 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 114 ld->sc_secperunit = td->td_size; 115 ld->sc_secsize = TWE_SECTOR_SIZE; 116 ld->sc_maxqueuecnt = (TWE_MAX_QUEUECNT - 1) / twe->sc_nunits; 117 ld->sc_start = ld_twe_start; 118 ld->sc_dump = ld_twe_dump; 119 120 typestr = twe_describe_code(twe_table_unittype, td->td_type); 121 if (typestr == NULL) { 122 sprintf(unktype, "<0x%02x>", td->td_type); 123 typestr = unktype; 124 } 125 switch (td->td_type) { 126 case TWE_AD_CONFIG_RAID0: 127 /* XXX TWE_AD_CONFIG_TwinStor? */ 128 case TWE_AD_CONFIG_RAID5: 129 case TWE_AD_CONFIG_RAID10: 130 stripestr = twe_describe_code(twe_table_stripedepth, 131 td->td_stripe); 132 if (stripestr == NULL) 133 sprintf(stripebuf, "<stripe code 0x%02x> ", 134 td->td_stripe); 135 else 136 sprintf(stripebuf, "%s stripe ", stripestr); 137 break; 138 default: 139 stripebuf[0] = '\0'; 140 } 141 142 error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, 143 TWE_PARAM_UNITINFO_Status, &status); 144 status &= TWE_PARAM_UNITSTATUS_MASK; 145 if (error) { 146 sprintf(unkstat, "<unknown>"); 147 statstr = unkstat; 148 } else if ((statstr = 149 twe_describe_code(twe_table_unitstate, status)) == NULL) { 150 sprintf(unkstat, "<status code 0x%02x>", status); 151 statstr = unkstat; 152 } 153 154 printf(": %s%s, status: %s\n", stripebuf, typestr, statstr); 155 ldattach(ld); 156 } 157 158 static int 159 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 160 int dowrite, struct buf *bp) 161 { 162 struct twe_ccb *ccb; 163 struct twe_cmd *tc; 164 struct twe_softc *twe; 165 int s, rv, flags; 166 167 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 168 169 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 170 if ((rv = twe_ccb_alloc(twe, &ccb, flags)) != 0) 171 return (rv); 172 173 ccb->ccb_data = data; 174 ccb->ccb_datasize = datasize; 175 tc = ccb->ccb_cmd; 176 177 /* Build the command. */ 178 tc->tc_size = 3; 179 tc->tc_unit = sc->sc_hwunit; 180 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 181 tc->tc_args.io.lba = htole32(blkno); 182 183 if (dowrite) 184 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 185 else 186 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 187 188 /* Map the data transfer. */ 189 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 190 twe_ccb_free(twe, ccb); 191 return (rv); 192 } 193 194 if (bp == NULL) { 195 /* 196 * Polled commands must not sit on the software queue. Wait 197 * up to 2 seconds for the command to complete. 198 */ 199 s = splbio(); 200 rv = twe_ccb_poll(twe, ccb, 2000); 201 twe_ccb_unmap(twe, ccb); 202 twe_ccb_free(twe, ccb); 203 splx(s); 204 } else { 205 ccb->ccb_tx.tx_handler = ld_twe_handler; 206 ccb->ccb_tx.tx_context = bp; 207 ccb->ccb_tx.tx_dv = (struct device *)sc; 208 twe_ccb_enqueue(twe, ccb); 209 rv = 0; 210 } 211 212 return (rv); 213 } 214 215 static int 216 ld_twe_start(struct ld_softc *ld, struct buf *bp) 217 { 218 219 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 220 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 221 } 222 223 static void 224 ld_twe_handler(struct twe_ccb *ccb, int error) 225 { 226 struct buf *bp; 227 struct twe_context *tx; 228 struct ld_twe_softc *sc; 229 struct twe_softc *twe; 230 231 tx = &ccb->ccb_tx; 232 bp = tx->tx_context; 233 sc = (struct ld_twe_softc *)tx->tx_dv; 234 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 235 236 twe_ccb_unmap(twe, ccb); 237 twe_ccb_free(twe, ccb); 238 239 if (error) { 240 bp->b_flags |= B_ERROR; 241 bp->b_error = error; 242 bp->b_resid = bp->b_bcount; 243 } else 244 bp->b_resid = 0; 245 246 lddone(&sc->sc_ld, bp); 247 } 248 249 static int 250 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 251 { 252 253 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 254 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 255 } 256
Indexes created Mon Sep 22 05:09:51 GMT 2025