| 1 | /* $NetBSD: ld_twe.c,v 1.39 2016/09/27 03:33:32 pgoyette 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 1.39 2016/09/27 03:33:32 pgoyette Exp $" ); |
| 38 | |
| 39 | #include <sys/param.h> |
| 40 | #include <sys/systm.h> |
| 41 | #include <sys/kernel.h> |
| 42 | #include <sys/device.h> |
| 43 | #include <sys/buf.h> |
| 44 | #include <sys/bufq.h> |
| 45 | #include <sys/endian.h> |
| 46 | #include <sys/dkio.h> |
| 47 | #include <sys/disk.h> |
| 48 | #include <sys/proc.h> |
| 49 | #include <sys/module.h> |
| 50 | #include <sys/bus.h> |
| 51 | |
| 52 | #include <dev/ldvar.h> |
| 53 | |
| 54 | #include <dev/pci/twereg.h> |
| 55 | #include <dev/pci/twevar.h> |
| 56 | |
| 57 | #include "ioconf.h" |
| 58 | |
| 59 | struct ld_twe_softc { |
| 60 | struct ld_softc sc_ld; |
| 61 | int sc_hwunit; |
| 62 | }; |
| 63 | |
| 64 | static void ld_twe_attach(device_t, device_t, void *); |
| 65 | static int ld_twe_detach(device_t, int); |
| 66 | static int ld_twe_dobio(struct ld_twe_softc *, void *, int, int, int, |
| 67 | struct buf *); |
| 68 | static int ld_twe_dump(struct ld_softc *, void *, int, int); |
| 69 | static int ld_twe_flush(struct ld_softc *, int); |
| 70 | static void ld_twe_handler(struct twe_ccb *, int); |
| 71 | static int ld_twe_match(device_t, cfdata_t, void *); |
| 72 | static int ld_twe_start(struct ld_softc *, struct buf *); |
| 73 | |
| 74 | static void ld_twe_adjqparam(device_t, int); |
| 75 | |
| 76 | CFATTACH_DECL_NEW(ld_twe, sizeof(struct ld_twe_softc), |
| 77 | ld_twe_match, ld_twe_attach, ld_twe_detach, NULL); |
| 78 | |
| 79 | static const struct twe_callbacks ld_twe_callbacks = { |
| 80 | ld_twe_adjqparam, |
| 81 | }; |
| 82 | |
| 83 | static int |
| 84 | ld_twe_match(device_t parent, cfdata_t match, void *aux) |
| 85 | { |
| 86 | |
| 87 | return (1); |
| 88 | } |
| 89 | |
| 90 | static void |
| 91 | ld_twe_attach(device_t parent, device_t self, void *aux) |
| 92 | { |
| 93 | struct twe_attach_args *twea = aux; |
| 94 | struct ld_twe_softc *sc = device_private(self); |
| 95 | struct ld_softc *ld = &sc->sc_ld; |
| 96 | struct twe_softc *twe = device_private(parent); |
| 97 | struct twe_drive *td = &twe->sc_units[twea->twea_unit]; |
| 98 | const char *typestr, *stripestr, *statstr; |
| 99 | char unktype[16], stripebuf[32], unkstat[32]; |
| 100 | int error; |
| 101 | uint8_t status; |
| 102 | |
| 103 | ld->sc_dv = self; |
| 104 | |
| 105 | twe_register_callbacks(twe, twea->twea_unit, &ld_twe_callbacks); |
| 106 | |
| 107 | sc->sc_hwunit = twea->twea_unit; |
| 108 | ld->sc_flags = LDF_ENABLED; |
| 109 | ld->sc_maxxfer = twe_get_maxxfer(twe_get_maxsegs()); |
| 110 | ld->sc_secperunit = td->td_size; |
| 111 | ld->sc_secsize = TWE_SECTOR_SIZE; |
| 112 | ld->sc_maxqueuecnt = twe->sc_openings; |
| 113 | ld->sc_start = ld_twe_start; |
| 114 | ld->sc_dump = ld_twe_dump; |
| 115 | ld->sc_flush = ld_twe_flush; |
| 116 | |
| 117 | typestr = twe_describe_code(twe_table_unittype, td->td_type); |
| 118 | if (typestr == NULL) { |
| 119 | snprintf(unktype, sizeof(unktype), "<0x%02x>" , td->td_type); |
| 120 | typestr = unktype; |
| 121 | } |
| 122 | switch (td->td_type) { |
| 123 | case TWE_AD_CONFIG_RAID0: |
| 124 | case TWE_AD_CONFIG_RAID5: |
| 125 | case TWE_AD_CONFIG_RAID10: |
| 126 | stripestr = twe_describe_code(twe_table_stripedepth, |
| 127 | td->td_stripe); |
| 128 | if (stripestr == NULL) |
| 129 | snprintf(stripebuf, sizeof(stripebuf), |
| 130 | "<stripe code 0x%02x> " , td->td_stripe); |
| 131 | else |
| 132 | snprintf(stripebuf, sizeof(stripebuf), "%s stripe " , |
| 133 | stripestr); |
| 134 | break; |
| 135 | default: |
| 136 | stripebuf[0] = '\0'; |
| 137 | } |
| 138 | |
| 139 | error = twe_param_get_1(twe, TWE_PARAM_UNITINFO + twea->twea_unit, |
| 140 | TWE_PARAM_UNITINFO_Status, &status); |
| 141 | status &= TWE_PARAM_UNITSTATUS_MASK; |
| 142 | if (error) { |
| 143 | snprintf(unkstat, sizeof(unkstat), "<unknown>" ); |
| 144 | statstr = unkstat; |
| 145 | } else if ((statstr = |
| 146 | twe_describe_code(twe_table_unitstate, status)) == NULL) { |
| 147 | snprintf(unkstat, sizeof(unkstat), "<status code 0x%02x>" , |
| 148 | status); |
| 149 | statstr = unkstat; |
| 150 | } |
| 151 | |
| 152 | aprint_normal(": %s%s, status: %s\n" , stripebuf, typestr, statstr); |
| 153 | ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); |
| 154 | } |
| 155 | |
| 156 | static int |
| 157 | ld_twe_detach(device_t self, int flags) |
| 158 | { |
| 159 | struct ld_twe_softc *sc = device_private(self); |
| 160 | struct ld_softc *ld = &sc->sc_ld; |
| 161 | int rv; |
| 162 | |
| 163 | if ((rv = ldbegindetach(ld, flags)) != 0) |
| 164 | return (rv); |
| 165 | ldenddetach(ld); |
| 166 | |
| 167 | return (0); |
| 168 | } |
| 169 | |
| 170 | static int |
| 171 | ld_twe_dobio(struct ld_twe_softc *sc, void *data, int datasize, int blkno, |
| 172 | int dowrite, struct buf *bp) |
| 173 | { |
| 174 | struct twe_ccb *ccb; |
| 175 | struct twe_cmd *tc; |
| 176 | struct twe_softc *twe; |
| 177 | int s, rv, flags; |
| 178 | |
| 179 | twe = device_private(device_parent(sc->sc_ld.sc_dv)); |
| 180 | |
| 181 | flags = (dowrite ? TWE_CCB_DATA_OUT : TWE_CCB_DATA_IN); |
| 182 | if ((ccb = twe_ccb_alloc(twe, flags)) == NULL) |
| 183 | return (EAGAIN); |
| 184 | |
| 185 | ccb->ccb_data = data; |
| 186 | ccb->ccb_datasize = datasize; |
| 187 | tc = ccb->ccb_cmd; |
| 188 | |
| 189 | /* Build the command. */ |
| 190 | tc->tc_size = 3; |
| 191 | tc->tc_unit = sc->sc_hwunit; |
| 192 | tc->tc_count = htole16(datasize / TWE_SECTOR_SIZE); |
| 193 | tc->tc_args.io.lba = htole32(blkno); |
| 194 | |
| 195 | if (dowrite) |
| 196 | tc->tc_opcode = TWE_OP_WRITE | (tc->tc_size << 5); |
| 197 | else |
| 198 | tc->tc_opcode = TWE_OP_READ | (tc->tc_size << 5); |
| 199 | |
| 200 | /* Map the data transfer. */ |
| 201 | if ((rv = twe_ccb_map(twe, ccb)) != 0) { |
| 202 | twe_ccb_free(twe, ccb); |
| 203 | return (rv); |
| 204 | } |
| 205 | |
| 206 | if (bp == NULL) { |
| 207 | /* |
| 208 | * Polled commands must not sit on the software queue. Wait |
| 209 | * up to 2 seconds for the command to complete. |
| 210 | */ |
| 211 | s = splbio(); |
| 212 | rv = twe_ccb_poll(twe, ccb, 2000); |
| 213 | twe_ccb_unmap(twe, ccb); |
| 214 | twe_ccb_free(twe, ccb); |
| 215 | splx(s); |
| 216 | } else { |
| 217 | ccb->ccb_tx.tx_handler = ld_twe_handler; |
| 218 | ccb->ccb_tx.tx_context = bp; |
| 219 | ccb->ccb_tx.tx_dv = sc->sc_ld.sc_dv; |
| 220 | twe_ccb_enqueue(twe, ccb); |
| 221 | rv = 0; |
| 222 | } |
| 223 | |
| 224 | return (rv); |
| 225 | } |
| 226 | |
| 227 | static int |
| 228 | ld_twe_start(struct ld_softc *ld, struct buf *bp) |
| 229 | { |
| 230 | |
| 231 | return (ld_twe_dobio((struct ld_twe_softc *)ld, bp->b_data, |
| 232 | bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); |
| 233 | } |
| 234 | |
| 235 | static void |
| 236 | ld_twe_handler(struct twe_ccb *ccb, int error) |
| 237 | { |
| 238 | struct buf *bp; |
| 239 | struct twe_context *tx; |
| 240 | struct ld_twe_softc *sc; |
| 241 | struct twe_softc *twe; |
| 242 | |
| 243 | tx = &ccb->ccb_tx; |
| 244 | bp = tx->tx_context; |
| 245 | sc = device_private(tx->tx_dv); |
| 246 | twe = device_private(device_parent(sc->sc_ld.sc_dv)); |
| 247 | |
| 248 | twe_ccb_unmap(twe, ccb); |
| 249 | twe_ccb_free(twe, ccb); |
| 250 | |
| 251 | if (error) { |
| 252 | bp->b_error = error; |
| 253 | bp->b_resid = bp->b_bcount; |
| 254 | } else |
| 255 | bp->b_resid = 0; |
| 256 | |
| 257 | lddone(&sc->sc_ld, bp); |
| 258 | } |
| 259 | |
| 260 | static int |
| 261 | ld_twe_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) |
| 262 | { |
| 263 | |
| 264 | return (ld_twe_dobio((struct ld_twe_softc *)ld, data, |
| 265 | blkcnt * ld->sc_secsize, blkno, 1, NULL)); |
| 266 | } |
| 267 | |
| 268 | static int |
| 269 | ld_twe_flush(struct ld_softc *ld, int flags) |
| 270 | { |
| 271 | struct ld_twe_softc *sc = (void *) ld; |
| 272 | struct twe_softc *twe = device_private(device_parent(ld->sc_dv)); |
| 273 | struct twe_ccb *ccb; |
| 274 | struct twe_cmd *tc; |
| 275 | int s, rv; |
| 276 | |
| 277 | ccb = twe_ccb_alloc_wait(twe, 0); |
| 278 | KASSERT(ccb != NULL); |
| 279 | |
| 280 | ccb->ccb_data = NULL; |
| 281 | ccb->ccb_datasize = 0; |
| 282 | |
| 283 | tc = ccb->ccb_cmd; |
| 284 | tc->tc_size = 2; |
| 285 | tc->tc_opcode = TWE_OP_FLUSH; |
| 286 | tc->tc_unit = sc->sc_hwunit; |
| 287 | tc->tc_count = 0; |
| 288 | |
| 289 | if (flags & LDFL_POLL) { |
| 290 | /* |
| 291 | * Polled commands must not sit on the software queue. Wait |
| 292 | * up to 2 seconds for the command to complete. |
| 293 | */ |
| 294 | s = splbio(); |
| 295 | rv = twe_ccb_poll(twe, ccb, 2000); |
| 296 | twe_ccb_unmap(twe, ccb); |
| 297 | twe_ccb_free(twe, ccb); |
| 298 | splx(s); |
| 299 | } else { |
| 300 | ccb->ccb_tx.tx_handler = twe_ccb_wait_handler; |
| 301 | ccb->ccb_tx.tx_context = NULL; |
| 302 | ccb->ccb_tx.tx_dv = ld->sc_dv; |
| 303 | twe_ccb_enqueue(twe, ccb); |
| 304 | |
| 305 | rv = 0; |
| 306 | s = splbio(); |
| 307 | while ((ccb->ccb_flags & TWE_CCB_COMPLETE) == 0) |
| 308 | if ((rv = tsleep(ccb, PRIBIO, "tweflush" , |
| 309 | 60 * hz)) != 0) |
| 310 | break; |
| 311 | twe_ccb_free(twe, ccb); |
| 312 | splx(s); |
| 313 | } |
| 314 | |
| 315 | return (rv); |
| 316 | } |
| 317 | |
| 318 | static void |
| 319 | ld_twe_adjqparam(device_t self, int openings) |
| 320 | { |
| 321 | struct ld_twe_softc *sc = device_private(self); |
| 322 | struct ld_softc *ld = &sc->sc_ld; |
| 323 | |
| 324 | ldadjqparam(ld, openings); |
| 325 | } |
| 326 | |
| 327 | MODULE(MODULE_CLASS_DRIVER, ld_twe, "ld,twe" ); |
| 328 | |
| 329 | #ifdef _MODULE |
| 330 | /* |
| 331 | * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" |
| 332 | * XXX it will be defined in the common-code module |
| 333 | */ |
| 334 | #undef CFDRIVER_DECL |
| 335 | #define CFDRIVER_DECL(name, class, attr) |
| 336 | #include "ioconf.c" |
| 337 | #endif |
| 338 | |
| 339 | static int |
| 340 | ld_twe_modcmd(modcmd_t cmd, void *opaque) |
| 341 | { |
| 342 | #ifdef _MODULE |
| 343 | /* |
| 344 | * We ignore the cfdriver_vec[] that ioconf provides, since |
| 345 | * the cfdrivers are attached already. |
| 346 | */ |
| 347 | static struct cfdriver * const no_cfdriver_vec[] = { NULL }; |
| 348 | #endif |
| 349 | int error = 0; |
| 350 | |
| 351 | #ifdef _MODULE |
| 352 | switch (cmd) { |
| 353 | case MODULE_CMD_INIT: |
| 354 | error = config_init_component(no_cfdriver_vec, |
| 355 | cfattach_ioconf_ld_twe, cfdata_ioconf_ld_twe); |
| 356 | break; |
| 357 | case MODULE_CMD_FINI: |
| 358 | error = config_fini_component(no_cfdriver_vec, |
| 359 | cfattach_ioconf_ld_twe, cfdata_ioconf_ld_twe); |
| 360 | break; |
| 361 | default: |
| 362 | error = ENOTTY; |
| 363 | break; |
| 364 | } |
| 365 | #endif |
| 366 | |
| 367 | return error; |
| 368 | } |
| 369 | |