ld_twe.c revision 1.14
1 /* $NetBSD: ld_twe.c,v 1.14 2003/09/21 19:20:18 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 1.14 2003/09/21 19:20:18 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; 101 char unktype[16], stripebuf[32]; 102 103 sc = (struct ld_twe_softc *)self; 104 ld = &sc->sc_ld; 105 twe = (struct twe_softc *)parent; 106 twea = aux; 107 td = &twe->sc_units[twea->twea_unit]; 108 109 sc->sc_hwunit = twea->twea_unit; 110 ld->sc_flags = LDF_ENABLED; 111 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 112 ld->sc_secperunit = td->td_size; 113 ld->sc_secsize = TWE_SECTOR_SIZE; 114 ld->sc_maxqueuecnt = (TWE_MAX_QUEUECNT - 1) / twe->sc_nunits; 115 ld->sc_start = ld_twe_start; 116 ld->sc_dump = ld_twe_dump; 117 118 typestr = twe_describe_code(twe_table_unittype, td->td_type); 119 if (typestr == NULL) { 120 sprintf(unktype, "<0x%02x>", td->td_type); 121 typestr = unktype; 122 } 123 switch (td->td_type) { 124 case TWE_AD_CONFIG_RAID0: 125 /* XXX TWE_AD_CONFIG_TwinStor? */ 126 case TWE_AD_CONFIG_RAID5: 127 case TWE_AD_CONFIG_RAID10: 128 stripestr = twe_describe_code(twe_table_stripedepth, 129 td->td_stripe); 130 if (stripestr == NULL) 131 sprintf(stripebuf, "<stripe code 0x%02x> ", 132 td->td_stripe); 133 else 134 sprintf(stripebuf, "%s stripe ", stripestr); 135 break; 136 default: 137 stripebuf[0] = '\0'; 138 } 139 140 printf(": %s%s\n", stripebuf, typestr); 141 ldattach(ld); 142 } 143 144 static int 145 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 146 int dowrite, struct buf *bp) 147 { 148 struct twe_ccb *ccb; 149 struct twe_cmd *tc; 150 struct twe_softc *twe; 151 int s, rv, flags; 152 153 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 154 155 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 156 if ((rv = twe_ccb_alloc(twe, &ccb, flags)) != 0) 157 return (rv); 158 159 ccb->ccb_data = data; 160 ccb->ccb_datasize = datasize; 161 tc = ccb->ccb_cmd; 162 163 /* Build the command. */ 164 tc->tc_size = 3; 165 tc->tc_unit = sc->sc_hwunit; 166 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 167 tc->tc_args.io.lba = htole32(blkno); 168 169 if (dowrite) 170 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 171 else 172 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 173 174 /* Map the data transfer. */ 175 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 176 twe_ccb_free(twe, ccb); 177 return (rv); 178 } 179 180 if (bp == NULL) { 181 /* 182 * Polled commands must not sit on the software queue. Wait 183 * up to 2 seconds for the command to complete. 184 */ 185 s = splbio(); 186 rv = twe_ccb_poll(twe, ccb, 2000); 187 twe_ccb_unmap(twe, ccb); 188 twe_ccb_free(twe, ccb); 189 splx(s); 190 } else { 191 ccb->ccb_tx.tx_handler = ld_twe_handler; 192 ccb->ccb_tx.tx_context = bp; 193 ccb->ccb_tx.tx_dv = (struct device *)sc; 194 twe_ccb_enqueue(twe, ccb); 195 rv = 0; 196 } 197 198 return (rv); 199 } 200 201 static int 202 ld_twe_start(struct ld_softc *ld, struct buf *bp) 203 { 204 205 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 206 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 207 } 208 209 static void 210 ld_twe_handler(struct twe_ccb *ccb, int error) 211 { 212 struct buf *bp; 213 struct twe_context *tx; 214 struct ld_twe_softc *sc; 215 struct twe_softc *twe; 216 217 tx = &ccb->ccb_tx; 218 bp = tx->tx_context; 219 sc = (struct ld_twe_softc *)tx->tx_dv; 220 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 221 222 twe_ccb_unmap(twe, ccb); 223 twe_ccb_free(twe, ccb); 224 225 if (error) { 226 bp->b_flags |= B_ERROR; 227 bp->b_error = error; 228 bp->b_resid = bp->b_bcount; 229 } else 230 bp->b_resid = 0; 231 232 lddone(&sc->sc_ld, bp); 233 } 234 235 static int 236 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 237 { 238 239 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 240 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 241 } 242
Indexes created Wed Oct 01 12:09:54 GMT 2025