ld_twe.c revision 1.34.4.1
1 /* $NetBSD: ld_twe.c,v 1.34.4.1 2011/03/05 20:53:46 rmind 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 * 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 * 3ware "Escalade" RAID controller front-end for ld(4) driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ld_twe.c,v 1.34.4.1 2011/03/05 20:53:46 rmind Exp $"); 38 39 #include "rnd.h" 40 41 #include <sys/param.h> 42 #include <sys/systm.h> 43 #include <sys/kernel.h> 44 #include <sys/device.h> 45 #include <sys/buf.h> 46 #include <sys/bufq.h> 47 #include <sys/endian.h> 48 #include <sys/dkio.h> 49 #include <sys/disk.h> 50 #include <sys/proc.h> 51 #if NRND > 0 52 #include <sys/rnd.h> 53 #endif 54 55 #include <sys/bus.h> 56 57 #include <dev/ldvar.h> 58 59 #include <dev/pci/twereg.h> 60 #include <dev/pci/twevar.h> 61 62 struct ld_twe_softc { 63 struct ld_softc sc_ld; 64 int sc_hwunit; 65 }; 66 67 static void ld_twe_attach(device_t, device_t, void *); 68 static int ld_twe_detach(device_t, int); 69 static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, 70 struct buf *); 71 static int ld_twe_dump(struct ld_softc *, void *, int, int); 72 static int ld_twe_flush(struct ld_softc *, int); 73 static void ld_twe_handler(struct twe_ccb *, int); 74 static int ld_twe_match(device_t, cfdata_t, void *); 75 static int ld_twe_start(struct ld_softc *, struct buf *); 76 77 static void ld_twe_adjqparam(device_t, int); 78 79 CFATTACH_DECL_NEW(ld_twe, sizeof(struct ld_twe_softc), 80 ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); 81 82 static const struct twe_callbacks ld_twe_callbacks = { 83 ld_twe_adjqparam, 84 }; 85 86 static int 87 ld_twe_match(device_t parent, cfdata_t match, void *aux) 88 { 89 90 return (1); 91 } 92 93 static void 94 ld_twe_attach(device_t parent, device_t self, void *aux) 95 { 96 struct twe_attach_args *twea = aux; 97 struct ld_twe_softc *sc = device_private(self); 98 struct ld_softc *ld = &sc->sc_ld; 99 struct twe_softc *twe = device_private(parent); 100 struct twe_drive *td = &twe->sc_units[twea->twea_unit]; 101 const char *typestr, *stripestr, *statstr; 102 char unktype[16], stripebuf[32], unkstat[32]; 103 int error; 104 uint8_t status; 105 106 ld->sc_dv = self; 107 108 twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); 109 110 sc->sc_hwunit = twea->twea_unit; 111 ld->sc_flags = LDF_ENABLED; 112 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 113 ld->sc_secperunit = td->td_size; 114 ld->sc_secsize = TWE_SECTOR_SIZE; 115 ld->sc_maxqueuecnt = twe->sc_openings; 116 ld->sc_start = ld_twe_start; 117 ld->sc_dump = ld_twe_dump; 118 ld->sc_flush = ld_twe_flush; 119 120 typestr = twe_describe_code(twe_table_unittype, td->td_type); 121 if (typestr == NULL) { 122 snprintf(unktype, sizeof(unktype), "<0x%02x>", td->td_type); 123 typestr = unktype; 124 } 125 switch (td->td_type) { 126 case TWE_AD_CONFIG_RAID0: 127 case TWE_AD_CONFIG_RAID5: 128 case TWE_AD_CONFIG_RAID10: 129 stripestr = twe_describe_code(twe_table_stripedepth, 130 td->td_stripe); 131 if (stripestr == NULL) 132 snprintf(stripebuf, sizeof(stripebuf), 133 "<stripe code 0x%02x> ", td->td_stripe); 134 else 135 snprintf(stripebuf, sizeof(stripebuf), "%s stripe ", 136 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 snprintf(unkstat, sizeof(unkstat), "<unknown>"); 147 statstr = unkstat; 148 } else if ((statstr = 149 twe_describe_code(twe_table_unitstate, status)) == NULL) { 150 snprintf(unkstat, sizeof(unkstat), "<status code 0x%02x>", 151 status); 152 statstr = unkstat; 153 } 154 155 aprint_normal(": %s%s, status: %s\n", stripebuf, typestr, statstr); 156 ldattach(ld); 157 } 158 159 static int 160 ld_twe_detach(device_t self, int flags) 161 { 162 struct ld_twe_softc *sc = device_private(self); 163 struct ld_softc *ld = &sc->sc_ld; 164 int rv; 165 166 if ((rv = ldbegindetach(ld, flags)) != 0) 167 return (rv); 168 ldenddetach(ld); 169 170 return (0); 171 } 172 173 static int 174 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 175 int dowrite, struct buf *bp) 176 { 177 struct twe_ccb *ccb; 178 struct twe_cmd *tc; 179 struct twe_softc *twe; 180 int s, rv, flags; 181 182 twe = device_private(device_parent(sc->sc_ld.sc_dv)); 183 184 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 185 if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) 186 return (EAGAIN); 187 188 ccb->ccb_data = data; 189 ccb->ccb_datasize = datasize; 190 tc = ccb->ccb_cmd; 191 192 /* Build the command. */ 193 tc->tc_size = 3; 194 tc->tc_unit = sc->sc_hwunit; 195 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 196 tc->tc_args.io.lba = htole32(blkno); 197 198 if (dowrite) 199 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 200 else 201 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 202 203 /* Map the data transfer. */ 204 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 205 twe_ccb_free(twe, ccb); 206 return (rv); 207 } 208 209 if (bp == NULL) { 210 /* 211 * Polled commands must not sit on the software queue. Wait 212 * up to 2 seconds for the command to complete. 213 */ 214 s = splbio(); 215 rv = twe_ccb_poll(twe, ccb, 2000); 216 twe_ccb_unmap(twe, ccb); 217 twe_ccb_free(twe, ccb); 218 splx(s); 219 } else { 220 ccb->ccb_tx.tx_handler = ld_twe_handler; 221 ccb->ccb_tx.tx_context = bp; 222 ccb->ccb_tx.tx_dv = sc->sc_ld.sc_dv; 223 twe_ccb_enqueue(twe, ccb); 224 rv = 0; 225 } 226 227 return (rv); 228 } 229 230 static int 231 ld_twe_start(struct ld_softc *ld, struct buf *bp) 232 { 233 234 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 235 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 236 } 237 238 static void 239 ld_twe_handler(struct twe_ccb *ccb, int error) 240 { 241 struct buf *bp; 242 struct twe_context *tx; 243 struct ld_twe_softc *sc; 244 struct twe_softc *twe; 245 246 tx = &ccb->ccb_tx; 247 bp = tx->tx_context; 248 sc = device_private(tx->tx_dv); 249 twe = device_private(device_parent(sc->sc_ld.sc_dv)); 250 251 twe_ccb_unmap(twe, ccb); 252 twe_ccb_free(twe, ccb); 253 254 if (error) { 255 bp->b_error = error; 256 bp->b_resid = bp->b_bcount; 257 } else 258 bp->b_resid = 0; 259 260 lddone(&sc->sc_ld, bp); 261 } 262 263 static int 264 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 265 { 266 267 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 268 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 269 } 270 271 static int 272 ld_twe_flush(struct ld_softc *ld, int flags) 273 { 274 struct ld_twe_softc *sc = (void *) ld; 275 struct twe_softc *twe = device_private(device_parent(ld->sc_dv)); 276 struct twe_ccb *ccb; 277 struct twe_cmd *tc; 278 int s, rv; 279 280 ccb = twe_ccb_alloc_wait(twe, 0); 281 KASSERT(ccb != NULL); 282 283 ccb->ccb_data = NULL; 284 ccb->ccb_datasize = 0; 285 286 tc = ccb->ccb_cmd; 287 tc->tc_size = 2; 288 tc->tc_opcode = TWE_OP_FLUSH; 289 tc->tc_unit = sc->sc_hwunit; 290 tc->tc_count = 0; 291 292 if (flags & LDFL_POLL) { 293 /* 294 * Polled commands must not sit on the software queue. Wait 295 * up to 2 seconds for the command to complete. 296 */ 297 s = splbio(); 298 rv = twe_ccb_poll(twe, ccb, 2000); 299 twe_ccb_unmap(twe, ccb); 300 twe_ccb_free(twe, ccb); 301 splx(s); 302 } else { 303 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 304 ccb->ccb_tx.tx_context = NULL; 305 ccb->ccb_tx.tx_dv = ld->sc_dv; 306 twe_ccb_enqueue(twe, ccb); 307 308 rv = 0; 309 s = splbio(); 310 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 311 if ((rv = tsleep(ccb, PRIBIO, "tweflush", 312 60 * hz)) != 0) 313 break; 314 twe_ccb_free(twe, ccb); 315 splx(s); 316 } 317 318 return (rv); 319 } 320 321 static void 322 ld_twe_adjqparam(device_t self, int openings) 323 { 324 struct ld_twe_softc *sc = device_private(self); 325 struct ld_softc *ld = &sc->sc_ld; 326 327 ldadjqparam(ld, openings); 328 } 329
Indexes created Wed Oct 01 12:09:54 GMT 2025