ld_twe.c revision 1.22
1 /* $NetBSD: ld_twe.c,v 1.22 2005/02/08 05:16:17 briggs 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 1.22 2005/02/08 05:16:17 briggs 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 #if NRND > 0 58 #include <sys/rnd.h> 59 #endif 60 61 #include <machine/bus.h> 62 63 #include <uvm/uvm_extern.h> 64 65 #include <dev/ldvar.h> 66 67 #include <dev/pci/twereg.h> 68 #include <dev/pci/twevar.h> 69 70 struct ld_twe_softc { 71 struct ld_softc sc_ld; 72 int sc_hwunit; 73 }; 74 75 static void ld_twe_attach(struct device *, struct device *, void *); 76 static int ld_twe_detach(struct device *, int); 77 static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, 78 struct buf *); 79 static int ld_twe_dump(struct ld_softc *, void *, int, int); 80 static int ld_twe_flush(struct ld_softc *); 81 static void ld_twe_handler(struct twe_ccb *, int); 82 static int ld_twe_match(struct device *, struct cfdata *, void *); 83 static int ld_twe_start(struct ld_softc *, struct buf *); 84 85 static void ld_twe_adjqparam(struct device *, int); 86 87 CFATTACH_DECL(ld_twe, sizeof(struct ld_twe_softc), 88 ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); 89 90 static const struct twe_callbacks ld_twe_callbacks = { 91 ld_twe_adjqparam, 92 }; 93 94 static int 95 ld_twe_match(struct device *parent, struct cfdata *match, void *aux) 96 { 97 98 return (1); 99 } 100 101 static void 102 ld_twe_attach(struct device *parent, struct device *self, void *aux) 103 { 104 struct twe_attach_args *twea; 105 struct ld_twe_softc *sc; 106 struct ld_softc *ld; 107 struct twe_softc *twe; 108 struct twe_drive *td; 109 const char *typestr, *stripestr, *statstr; 110 char unktype[16], stripebuf[32], unkstat[32]; 111 int error; 112 uint8_t status; 113 114 sc = (struct ld_twe_softc *)self; 115 ld = &sc->sc_ld; 116 twe = (struct twe_softc *)parent; 117 twea = aux; 118 td = &twe->sc_units[twea->twea_unit]; 119 120 twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); 121 122 sc->sc_hwunit = twea->twea_unit; 123 ld->sc_flags = LDF_ENABLED; 124 ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); 125 ld->sc_secperunit = td->td_size; 126 ld->sc_secsize = TWE_SECTOR_SIZE; 127 ld->sc_maxqueuecnt = twe->sc_openings; 128 ld->sc_start = ld_twe_start; 129 ld->sc_dump = ld_twe_dump; 130 ld->sc_flush = ld_twe_flush; 131 132 typestr = twe_describe_code(twe_table_unittype, td->td_type); 133 if (typestr == NULL) { 134 snprintf(unktype, sizeof(unktype), "<0x%02x>", td->td_type); 135 typestr = unktype; 136 } 137 switch (td->td_type) { 138 case TWE_AD_CONFIG_RAID0: 139 case TWE_AD_CONFIG_RAID5: 140 case TWE_AD_CONFIG_RAID10: 141 stripestr = twe_describe_code(twe_table_stripedepth, 142 td->td_stripe); 143 if (stripestr == NULL) 144 snprintf(stripebuf, sizeof(stripebuf), 145 "<stripe code 0x%02x> ", td->td_stripe); 146 else 147 snprintf(stripebuf, sizeof(stripebuf), "%s stripe ", 148 stripestr); 149 break; 150 default: 151 stripebuf[0] = '\0'; 152 } 153 154 error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, 155 TWE_PARAM_UNITINFO_Status, &status); 156 status &= TWE_PARAM_UNITSTATUS_MASK; 157 if (error) { 158 snprintf(unkstat, sizeof(unkstat), "<unknown>"); 159 statstr = unkstat; 160 } else if ((statstr = 161 twe_describe_code(twe_table_unitstate, status)) == NULL) { 162 snprintf(unkstat, sizeof(unkstat), "<status code 0x%02x>", 163 status); 164 statstr = unkstat; 165 } 166 167 aprint_normal(": %s%s, status: %s\n", stripebuf, typestr, statstr); 168 ldattach(ld); 169 } 170 171 static int 172 ld_twe_detach(struct device *self, int flags) 173 { 174 int rv; 175 176 if ((rv = ldbegindetach((struct ld_softc *)self, flags)) != 0) 177 return (rv); 178 ldenddetach((struct ld_softc *)self); 179 180 return (0); 181 } 182 183 static int 184 ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, 185 int dowrite, struct buf *bp) 186 { 187 struct twe_ccb *ccb; 188 struct twe_cmd *tc; 189 struct twe_softc *twe; 190 int s, rv, flags; 191 192 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 193 194 flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); 195 if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) 196 return (EAGAIN); 197 198 ccb->ccb_data = data; 199 ccb->ccb_datasize = datasize; 200 tc = ccb->ccb_cmd; 201 202 /* Build the command. */ 203 tc->tc_size = 3; 204 tc->tc_unit = sc->sc_hwunit; 205 tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); 206 tc->tc_args.io.lba = htole32(blkno); 207 208 if (dowrite) 209 tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); 210 else 211 tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); 212 213 /* Map the data transfer. */ 214 if ((rv = twe_ccb_map(twe, ccb)) != 0) { 215 twe_ccb_free(twe, ccb); 216 return (rv); 217 } 218 219 if (bp == NULL) { 220 /* 221 * Polled commands must not sit on the software queue. Wait 222 * up to 2 seconds for the command to complete. 223 */ 224 s = splbio(); 225 rv = twe_ccb_poll(twe, ccb, 2000); 226 twe_ccb_unmap(twe, ccb); 227 twe_ccb_free(twe, ccb); 228 splx(s); 229 } else { 230 ccb->ccb_tx.tx_handler = ld_twe_handler; 231 ccb->ccb_tx.tx_context = bp; 232 ccb->ccb_tx.tx_dv = (struct device *)sc; 233 twe_ccb_enqueue(twe, ccb); 234 rv = 0; 235 } 236 237 return (rv); 238 } 239 240 static int 241 ld_twe_start(struct ld_softc *ld, struct buf *bp) 242 { 243 244 return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, 245 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 246 } 247 248 static void 249 ld_twe_handler(struct twe_ccb *ccb, int error) 250 { 251 struct buf *bp; 252 struct twe_context *tx; 253 struct ld_twe_softc *sc; 254 struct twe_softc *twe; 255 256 tx = &ccb->ccb_tx; 257 bp = tx->tx_context; 258 sc = (struct ld_twe_softc *)tx->tx_dv; 259 twe = (struct twe_softc *)sc->sc_ld.sc_dv.dv_parent; 260 261 twe_ccb_unmap(twe, ccb); 262 twe_ccb_free(twe, ccb); 263 264 if (error) { 265 bp->b_flags |= B_ERROR; 266 bp->b_error = error; 267 bp->b_resid = bp->b_bcount; 268 } else 269 bp->b_resid = 0; 270 271 lddone(&sc->sc_ld, bp); 272 } 273 274 static int 275 ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 276 { 277 278 return (ld_twe_dobio((struct ld_twe_softc *)ld, data, 279 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 280 } 281 282 static int 283 ld_twe_flush(struct ld_softc *ld) 284 { 285 struct ld_twe_softc *sc = (void *) ld; 286 struct twe_softc *twe = (void *) ld->sc_dv.dv_parent; 287 struct twe_ccb *ccb; 288 struct twe_cmd *tc; 289 int s, rv; 290 291 ccb = twe_ccb_alloc_wait(twe, 0); 292 KASSERT(ccb != NULL); 293 294 ccb->ccb_data = NULL; 295 ccb->ccb_datasize = 0; 296 ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; 297 ccb->ccb_tx.tx_context = NULL; 298 ccb->ccb_tx.tx_dv = &ld->sc_dv; 299 300 tc = ccb->ccb_cmd; 301 tc->tc_size = 2; 302 tc->tc_opcode = TWE_OP_FLUSH; 303 tc->tc_unit = sc->sc_hwunit; 304 tc->tc_count = 0; 305 306 rv = 0; 307 twe_ccb_enqueue(twe, ccb); 308 s = splbio(); 309 while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) 310 if ((rv = tsleep(ccb, PRIBIO, "tweflush", 60 * hz)) != 0) 311 break; 312 twe_ccb_free(twe, ccb); 313 splx(s); 314 315 return (rv); 316 } 317 318 static void 319 ld_twe_adjqparam(struct device *self, int openings) 320 { 321 322 ldadjqparam((struct ld_softc *)self, openings); 323 } 324
Indexes created Mon Sep 22 05:09:51 GMT 2025