ld_twe.c revision 1.27
1 /* $NetBSD: ld_twe.c,v 1.27 2007/07/21 19:06:21 ad 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 1.27 2007/07/21 19:06:21 ad 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/bufq.h> 54 #include <sys/endian.h> 55 #include <sys/dkio.h> 56 #include <sys/disk.h> 57 #include <sys/proc.h> 58 #if NRND > 0 59 #include <sys/rnd.h> 60 #endif 61 62 #include <machine/bus.h> 63 64 #include <uvm/uvm_extern.h> 65 66 #include <dev/ldvar.h> 67 68 #include <dev/pci/twereg.h> 69 #include <dev/pci/twevar.h> 70 71 struct ld_twe_softc { 72 struct ld_softc sc_ld; 73 int sc_hwunit; 74 }; 75 76 static void ld_twe_attach(struct device *, struct device *, void *); 77 static int ld_twe_detach(struct device *, int); 78 static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, 79 struct buf *); 80 static int ld_twe_dump(struct ld_softc *, void *, int, int); 81 static int ld_twe_flush(struct ld_softc *); 82 static void ld_twe_handler(struct twe_ccb *, int); 83 static int ld_twe_match(struct device *, struct cfdata *, void *); 84 static int ld_twe_start(struct ld_softc *, struct buf *); 85 86 static void ld_twe_adjqparam(struct device *, int); 87 88 CFATTACH_DECL(ld_twe, sizeof(struct ld_twe_softc), 89 ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); 90 91 static const struct twe_callbacks ld_twe_callbacks = { 92 ld_twe_adjqparam, 93 }; 94 95 static int 96 ld_twe_match(struct device *parent, struct cfdata *match, 97 void *aux) 98 { 99 100 return (1); 101 } 102 103 static void 104 ld_twe_attach(struct device *parent, struct device *self, void *aux) 105 { 106 struct twe_attach_args *twea; 107 struct ld_twe_softc *sc; 108 struct ld_softc *ld; 109 struct twe_softc *twe; 110 struct twe_drive *td; 111 const char *typestr, *stripestr, *statstr; 112 char unktype[16], stripebuf[32], unkstat[32]; 113 int error; 114 uint8_t status; 115 116 sc = (struct ld_twe_softc *)self; 117 ld = &sc->sc_ld; 118 twe = (struct twe_softc *)parent; 119 twea = aux; 120 td = &twe->sc_units[twea->twea_unit]; 121 122 twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); 123 124 sc->sc_hwunit = twea->twea_unit; 125 ld->sc_flags = LDF_ENABLED; 126 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 127 ld->sc_secperunit = td->td_size; 128 ld->sc_secsize = TWE_SECTOR_SIZE; 129 ld->sc_maxqueuecnt = twe->sc_openings; 130 ld->sc_start = ld_twe_start; 131 ld->sc_dump = ld_twe_dump; 132 ld->sc_flush = ld_twe_flush; 133 134 typestr = twe_describe_code(twe_table_unittype, td->td_type); 135 if (typestr == NULL) { 136 snprintf(unktype, sizeof(unktype), "<0x%02x>", td->td_type); 137 typestr = unktype; 138 } 139 switch (td->td_type) { 140 case TWE_AD_CONFIG_RAID0: 141 case TWE_AD_CONFIG_RAID5: 142 case TWE_AD_CONFIG_RAID10: 143 stripestr = twe_describe_code(twe_table_stripedepth, 144 td->td_stripe); 145 if (stripestr == NULL) 146 snprintf(stripebuf, sizeof(stripebuf), 147 "<stripe code 0x%02x> ", td->td_stripe); 148 else 149 snprintf(stripebuf, sizeof(stripebuf), "%s stripe ", 150 stripestr); 151 break; 152 default: 153 stripebuf[0] = '\0'; 154 } 155 156 error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, 157 TWE_PARAM_UNITINFO_Status, &status); 158 status &= TWE_PARAM_UNITSTATUS_MASK; 159 if (error) { 160 snprintf(unkstat, sizeof(unkstat), "<unknown>"); 161 statstr = unkstat; 162 } else if ((statstr = 163 twe_describe_code(twe_table_unitstate, status)) == NULL) { 164 snprintf(unkstat, sizeof(unkstat), "<status code 0x%02x>", 165 status); 166 statstr = unkstat; 167 } 168 169 aprint_normal(": %s%s, status: %s\n", stripebuf, typestr, statstr); 170 ldattach(ld); 171 } 172 173 static int 174 ld_twe_detach(struct device *self, int flags) 175 { 176 int rv; 177 178 if ((rv = ldbegindetach((struct ld_softc *)self, flags)) != 0) 179 return (rv); 180 ldenddetach((struct ld_softc *)self); 181 182 return (0); 183 } 184 185 static int 186 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 187 int dowrite, struct buf *bp) 188 { 189 struct twe_ccb *ccb; 190 struct twe_cmd *tc; 191 struct twe_softc *twe; 192 int s, rv, flags; 193 194 twe = (struct twe_softc *)device_parent(&sc->sc_ld.sc_dv); 195 196 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 197 if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) 198 return (EAGAIN); 199 200 ccb->ccb_data = data; 201 ccb->ccb_datasize = datasize; 202 tc = ccb->ccb_cmd; 203 204 /* Build the command. */ 205 tc->tc_size = 3; 206 tc->tc_unit = sc->sc_hwunit; 207 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 208 tc->tc_args.io.lba = htole32(blkno); 209 210 if (dowrite) 211 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 212 else 213 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 214 215 /* Map the data transfer. */ 216 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 217 twe_ccb_free(twe, ccb); 218 return (rv); 219 } 220 221 if (bp == NULL) { 222 /* 223 * Polled commands must not sit on the software queue. Wait 224 * up to 2 seconds for the command to complete. 225 */ 226 s = splbio(); 227 rv = twe_ccb_poll(twe, ccb, 2000); 228 twe_ccb_unmap(twe, ccb); 229 twe_ccb_free(twe, ccb); 230 splx(s); 231 } else { 232 ccb->ccb_tx.tx_handler = ld_twe_handler; 233 ccb->ccb_tx.tx_context = bp; 234 ccb->ccb_tx.tx_dv = (struct device *)sc; 235 twe_ccb_enqueue(twe, ccb); 236 rv = 0; 237 } 238 239 return (rv); 240 } 241 242 static int 243 ld_twe_start(struct ld_softc *ld, struct buf *bp) 244 { 245 246 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 247 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 248 } 249 250 static void 251 ld_twe_handler(struct twe_ccb *ccb, int error) 252 { 253 struct buf *bp; 254 struct twe_context *tx; 255 struct ld_twe_softc *sc; 256 struct twe_softc *twe; 257 258 tx = &ccb->ccb_tx; 259 bp = tx->tx_context; 260 sc = (struct ld_twe_softc *)tx->tx_dv; 261 twe = (struct twe_softc *)device_parent(&sc->sc_ld.sc_dv); 262 263 twe_ccb_unmap(twe, ccb); 264 twe_ccb_free(twe, ccb); 265 266 if (error) { 267 bp->b_flags |= B_ERROR; 268 bp->b_error = error; 269 bp->b_resid = bp->b_bcount; 270 } else 271 bp->b_resid = 0; 272 273 lddone(&sc->sc_ld, bp); 274 } 275 276 static int 277 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 278 { 279 280 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 281 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 282 } 283 284 static int 285 ld_twe_flush(struct ld_softc *ld) 286 { 287 struct ld_twe_softc *sc = (void *) ld; 288 struct twe_softc *twe = (void *) device_parent(&ld->sc_dv); 289 struct twe_ccb *ccb; 290 struct twe_cmd *tc; 291 int s, rv; 292 293 ccb = twe_ccb_alloc_wait(twe, 0); 294 KASSERT(ccb != NULL); 295 296 ccb->ccb_data = NULL; 297 ccb->ccb_datasize = 0; 298 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 299 ccb->ccb_tx.tx_context = NULL; 300 ccb->ccb_tx.tx_dv = &ld->sc_dv; 301 302 tc = ccb->ccb_cmd; 303 tc->tc_size = 2; 304 tc->tc_opcode = TWE_OP_FLUSH; 305 tc->tc_unit = sc->sc_hwunit; 306 tc->tc_count = 0; 307 308 rv = 0; 309 twe_ccb_enqueue(twe, ccb); 310 s = splbio(); 311 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 312 if ((rv = tsleep(ccb, PRIBIO, "tweflush", 60 * hz)) != 0) 313 break; 314 twe_ccb_free(twe, ccb); 315 splx(s); 316 317 return (rv); 318 } 319 320 static void 321 ld_twe_adjqparam(struct device *self, int openings) 322 { 323 324 ldadjqparam((struct ld_softc *)self, openings); 325 } 326
Indexes created Sun Sep 21 20:09:37 GMT 2025