ld_twe.c revision 1.18.2.1
1 /* $NetBSD: ld_twe.c,v 1.18.2.1 2004/05/30 07:12:11 tron 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 1.18.2.1 2004/05/30 07:12:11 tron 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_detach(struct device *, int); 76 static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, 77 struct buf *); 78 static int ld_twe_dump(struct ld_softc *, void *, int, int); 79 static int ld_twe_flush(struct ld_softc *); 80 static void ld_twe_handler(struct twe_ccb *, int); 81 static int ld_twe_match(struct device *, struct cfdata *, void *); 82 static int ld_twe_start(struct ld_softc *, struct buf *); 83 84 static void ld_twe_adjqparam(struct device *, int); 85 86 CFATTACH_DECL(ld_twe, sizeof(struct ld_twe_softc), 87 ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); 88 89 static const struct twe_callbacks ld_twe_callbacks = { 90 ld_twe_adjqparam, 91 }; 92 93 static int 94 ld_twe_match(struct device *parent, struct cfdata *match, void *aux) 95 { 96 97 return (1); 98 } 99 100 static void 101 ld_twe_attach(struct device *parent, struct device *self, void *aux) 102 { 103 struct twe_attach_args *twea; 104 struct ld_twe_softc *sc; 105 struct ld_softc *ld; 106 struct twe_softc *twe; 107 struct twe_drive *td; 108 const char *typestr, *stripestr, *statstr; 109 char unktype[16], stripebuf[32], unkstat[32]; 110 int error; 111 uint8_t status; 112 113 sc = (struct ld_twe_softc *)self; 114 ld = &sc->sc_ld; 115 twe = (struct twe_softc *)parent; 116 twea = aux; 117 td = &twe->sc_units[twea->twea_unit]; 118 119 twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); 120 121 sc->sc_hwunit = twea->twea_unit; 122 ld->sc_flags = LDF_ENABLED; 123 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 124 ld->sc_secperunit = td->td_size; 125 ld->sc_secsize = TWE_SECTOR_SIZE; 126 ld->sc_maxqueuecnt = twe->sc_openings; 127 ld->sc_start = ld_twe_start; 128 ld->sc_dump = ld_twe_dump; 129 ld->sc_flush = ld_twe_flush; 130 131 typestr = twe_describe_code(twe_table_unittype, td->td_type); 132 if (typestr == NULL) { 133 sprintf(unktype, "<0x%02x>", td->td_type); 134 typestr = unktype; 135 } 136 switch (td->td_type) { 137 case TWE_AD_CONFIG_RAID0: 138 case TWE_AD_CONFIG_RAID5: 139 case TWE_AD_CONFIG_RAID10: 140 stripestr = twe_describe_code(twe_table_stripedepth, 141 td->td_stripe); 142 if (stripestr == NULL) 143 sprintf(stripebuf, "<stripe code 0x%02x> ", 144 td->td_stripe); 145 else 146 sprintf(stripebuf, "%s stripe ", stripestr); 147 break; 148 default: 149 stripebuf[0] = '\0'; 150 } 151 152 error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, 153 TWE_PARAM_UNITINFO_Status, &status); 154 status &= TWE_PARAM_UNITSTATUS_MASK; 155 if (error) { 156 sprintf(unkstat, "<unknown>"); 157 statstr = unkstat; 158 } else if ((statstr = 159 twe_describe_code(twe_table_unitstate, status)) == NULL) { 160 sprintf(unkstat, "<status code 0x%02x>", status); 161 statstr = unkstat; 162 } 163 164 printf(": %s%s, status: %s\n", stripebuf, typestr, statstr); 165 ldattach(ld); 166 } 167 168 static int 169 ld_twe_detach(struct device *self, int flags) 170 { 171 int rv; 172 173 if ((rv = ldbegindetach((struct ld_softc *)self, flags)) != 0) 174 return (rv); 175 ldenddetach((struct ld_softc *)self); 176 177 return (0); 178 } 179 180 static int 181 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 182 int dowrite, struct buf *bp) 183 { 184 struct twe_ccb *ccb; 185 struct twe_cmd *tc; 186 struct twe_softc *twe; 187 int s, rv, flags; 188 189 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 190 191 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 192 if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) 193 return (EAGAIN); 194 195 ccb->ccb_data = data; 196 ccb->ccb_datasize = datasize; 197 tc = ccb->ccb_cmd; 198 199 /* Build the command. */ 200 tc->tc_size = 3; 201 tc->tc_unit = sc->sc_hwunit; 202 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 203 tc->tc_args.io.lba = htole32(blkno); 204 205 if (dowrite) 206 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 207 else 208 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 209 210 /* Map the data transfer. */ 211 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 212 twe_ccb_free(twe, ccb); 213 return (rv); 214 } 215 216 if (bp == NULL) { 217 /* 218 * Polled commands must not sit on the software queue. Wait 219 * up to 2 seconds for the command to complete. 220 */ 221 s = splbio(); 222 rv = twe_ccb_poll(twe, ccb, 2000); 223 twe_ccb_unmap(twe, ccb); 224 twe_ccb_free(twe, ccb); 225 splx(s); 226 } else { 227 ccb->ccb_tx.tx_handler = ld_twe_handler; 228 ccb->ccb_tx.tx_context = bp; 229 ccb->ccb_tx.tx_dv = (struct device *)sc; 230 twe_ccb_enqueue(twe, ccb); 231 rv = 0; 232 } 233 234 return (rv); 235 } 236 237 static int 238 ld_twe_start(struct ld_softc *ld, struct buf *bp) 239 { 240 241 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 242 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 243 } 244 245 static void 246 ld_twe_handler(struct twe_ccb *ccb, int error) 247 { 248 struct buf *bp; 249 struct twe_context *tx; 250 struct ld_twe_softc *sc; 251 struct twe_softc *twe; 252 253 tx = &ccb->ccb_tx; 254 bp = tx->tx_context; 255 sc = (struct ld_twe_softc *)tx->tx_dv; 256 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 257 258 twe_ccb_unmap(twe, ccb); 259 twe_ccb_free(twe, ccb); 260 261 if (error) { 262 bp->b_flags |= B_ERROR; 263 bp->b_error = error; 264 bp->b_resid = bp->b_bcount; 265 } else 266 bp->b_resid = 0; 267 268 lddone(&sc->sc_ld, bp); 269 } 270 271 static int 272 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 273 { 274 275 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 276 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 277 } 278 279 static int 280 ld_twe_flush(struct ld_softc *ld) 281 { 282 struct ld_twe_softc *sc = (void *) ld; 283 struct twe_softc *twe = (void *) ld->sc_dv.dv_parent; 284 struct twe_ccb *ccb; 285 struct twe_cmd *tc; 286 int s, rv; 287 288 ccb = twe_ccb_alloc_wait(twe, 0); 289 KASSERT(ccb != NULL); 290 291 ccb->ccb_data = NULL; 292 ccb->ccb_datasize = 0; 293 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 294 ccb->ccb_tx.tx_context = NULL; 295 ccb->ccb_tx.tx_dv = &ld->sc_dv; 296 297 tc = ccb->ccb_cmd; 298 tc->tc_size = 2; 299 tc->tc_opcode = TWE_OP_FLUSH; 300 tc->tc_unit = sc->sc_hwunit; 301 tc->tc_count = 0; 302 303 rv = 0; 304 twe_ccb_enqueue(twe, ccb); 305 s = splbio(); 306 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 307 if ((rv = tsleep(ccb, PRIBIO, "tweflush", 60 * hz)) != 0) 308 break; 309 twe_ccb_free(twe, ccb); 310 splx(s); 311 312 return (rv); 313 } 314 315 static void 316 ld_twe_adjqparam(struct device *self, int openings) 317 { 318 319 ldadjqparam((struct ld_softc *)self, openings); 320 } 321
Indexes created Wed Oct 01 12:09:54 GMT 2025