1 /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */ 2 /* $NetBSD: ld_twa.c,v 1.21 2025/04/13 02:34:03 rin Exp $ */ 3 4 /*- 5 * Copyright (c) 2000, 2001, 2002, 2003, 2004 The NetBSD Foundation, Inc. 6 * All rights reserved. 7 * 8 * This code is derived from software contributed to The NetBSD Foundation 9 * by Andrew Doran, and by Jason R. Thorpe and Jordan Rhody of Wasabi 10 * Systems, Inc. 11 * 12 * Redistribution and use in source and binary forms, with or without 13 * modification, are permitted provided that the following conditions 14 * are met: 15 * 1. Redistributions of source code must retain the above copyright 16 * notice, this list of conditions and the following disclaimer. 17 * 2. Redistributions in binary form must reproduce the above copyright 18 * notice, this list of conditions and the following disclaimer in the 19 * documentation and/or other materials provided with the distribution. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 23 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 24 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 25 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 */ 33 34 /* 35 * 3ware "Apache" RAID controller front-end for ld(4) driver. 36 */ 37 38 #include <sys/cdefs.h> 39 __KERNEL_RCSID(0, "$NetBSD: ld_twa.c,v 1.21 2025/04/13 02:34:03 rin Exp $"); 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 #include <sys/module.h> 52 #include <sys/bus.h> 53 54 #include <dev/ldvar.h> 55 56 #include <dev/scsipi/scsipi_all.h> 57 #include <dev/scsipi/scsipi_disk.h> 58 #include <dev/scsipi/scsipiconf.h> 59 #include <dev/scsipi/scsi_disk.h> 60 61 62 #include <dev/pci/pcireg.h> 63 #include <dev/pci/pcivar.h> 64 #include <dev/pci/twareg.h> 65 #include <dev/pci/twavar.h> 66 67 #include "ioconf.h" 68 69 struct ld_twa_softc { 70 struct ld_softc sc_ld; 71 int sc_hwunit; 72 }; 73 74 static void ld_twa_attach(device_t, device_t, void *); 75 static int ld_twa_detach(device_t, int); 76 static int ld_twa_dobio(struct ld_twa_softc *, void *, size_t, daddr_t, 77 struct buf *); 78 static int ld_twa_dump(struct ld_softc *, void *, daddr_t, int); 79 static int ld_twa_flush(struct ld_softc *, bool); 80 static int ld_twa_ioctl(struct ld_softc *, u_long, void *, int32_t, bool); 81 static void ld_twa_handler(struct twa_request *); 82 static int ld_twa_match(device_t, cfdata_t, void *); 83 static int ld_twa_start(struct ld_softc *, struct buf *); 84 85 static void ld_twa_adjqparam(device_t, int); 86 87 static int ld_twa_scsicmd(struct ld_twa_softc *, 88 struct twa_request *, struct buf *); 89 90 CFATTACH_DECL_NEW(ld_twa, sizeof(struct ld_twa_softc), 91 ld_twa_match, ld_twa_attach, ld_twa_detach, NULL); 92 93 static const struct twa_callbacks ld_twa_callbacks = { 94 ld_twa_adjqparam, 95 }; 96 97 static int 98 ld_twa_match(device_t parent, cfdata_t match, void *aux) 99 { 100 101 return (1); 102 } 103 104 static void 105 ld_twa_attach(device_t parent, device_t self, void *aux) 106 { 107 struct twa_attach_args *twa_args = aux; 108 struct ld_twa_softc *sc = device_private(self); 109 struct ld_softc *ld = &sc->sc_ld; 110 struct twa_softc *twa = device_private(parent); 111 112 ld->sc_dv = self; 113 114 twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks); 115 116 sc->sc_hwunit = twa_args->twaa_unit; 117 ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs()); 118 ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size; 119 ld->sc_flags = LDF_ENABLED; 120 ld->sc_secsize = TWA_SECTOR_SIZE; 121 ld->sc_maxqueuecnt = twa->sc_units[sc->sc_hwunit].td_openings; 122 ld->sc_start = ld_twa_start; 123 ld->sc_dump = ld_twa_dump; 124 ld->sc_ioctl = ld_twa_ioctl; 125 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); 126 } 127 128 static int 129 ld_twa_detach(device_t self, int flags) 130 { 131 struct ld_twa_softc *sc = device_private(self); 132 struct ld_softc *ld = &sc->sc_ld; 133 int error; 134 135 if ((error = ldbegindetach(ld, flags)) != 0) 136 return (error); 137 ldenddetach(ld); 138 139 return (0); 140 } 141 142 static int 143 ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize, 144 daddr_t blkno, struct buf *bp) 145 { 146 int rv; 147 struct twa_request *tr; 148 struct twa_softc *twa; 149 150 twa = device_private(device_parent(sc->sc_ld.sc_dv)); 151 152 if ((tr = twa_get_request(twa, 0)) == NULL) { 153 return (EAGAIN); 154 } 155 if (bp->b_flags & B_READ) { 156 tr->tr_flags = TWA_CMD_DATA_OUT; 157 } else { 158 tr->tr_flags = TWA_CMD_DATA_IN; 159 } 160 161 tr->tr_data = data; 162 tr->tr_length = datasize; 163 tr->tr_cmd_pkt_type = 164 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 165 166 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 167 168 tr->tr_command->command.cmd_pkt_9k.command.opcode = 169 TWA_OP_EXECUTE_SCSI_COMMAND; 170 tr->tr_command->command.cmd_pkt_9k.unit = 171 sc->sc_hwunit; 172 tr->tr_command->command.cmd_pkt_9k.request_id = 173 tr->tr_request_id; 174 tr->tr_command->command.cmd_pkt_9k.status = 0; 175 tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1; 176 tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16; 177 178 /* offset from end of hdr = max cdb len */ 179 ld_twa_scsicmd(sc, tr, bp); 180 181 tr->tr_callback = ld_twa_handler; 182 tr->tr_ld_sc = sc; 183 184 tr->bp = bp; 185 186 rv = twa_map_request(tr); 187 188 return (rv); 189 } 190 191 static int 192 ld_twa_start(struct ld_softc *ld, struct buf *bp) 193 { 194 195 return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data, 196 bp->b_bcount, bp->b_rawblkno, bp)); 197 } 198 199 static void 200 ld_twa_handler(struct twa_request *tr) 201 { 202 uint8_t status; 203 struct buf *bp; 204 struct ld_twa_softc *sc; 205 206 bp = tr->bp; 207 sc = (struct ld_twa_softc *)tr->tr_ld_sc; 208 209 status = tr->tr_command->command.cmd_pkt_9k.status; 210 211 if (status != 0) { 212 bp->b_error = EIO; 213 bp->b_resid = bp->b_bcount; 214 } else { 215 bp->b_resid = 0; 216 bp->b_error = 0; 217 } 218 twa_release_request(tr); 219 220 lddone(&sc->sc_ld, bp); 221 } 222 223 static int 224 ld_twa_dump(struct ld_softc *ld, void *data, daddr_t blkno, int blkcnt) 225 { 226 227 #if 0 228 /* XXX Unsafe right now. */ 229 return (ld_twa_dobio((struct ld_twa_softc *)ld, data, 230 blkcnt * ld->sc_secsize, blkno, NULL)); 231 #else 232 return EIO; 233 #endif 234 235 } 236 237 238 static int 239 ld_twa_flush(struct ld_softc *ld, bool poll) 240 { 241 int s, rv = 0; 242 struct twa_request *tr; 243 struct twa_softc *twa = device_private(device_parent(ld->sc_dv)); 244 struct ld_twa_softc *sc = (void *)ld; 245 struct twa_command_generic *generic_cmd; 246 247 /* Get a request packet. */ 248 tr = twa_get_request_wait(twa, 0); 249 KASSERT(tr != NULL); 250 251 tr->tr_cmd_pkt_type = 252 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 253 254 tr->tr_callback = twa_request_wait_handler; 255 tr->tr_ld_sc = sc; 256 257 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 258 259 generic_cmd = &(tr->tr_command->command.cmd_pkt_7k.generic); 260 generic_cmd->opcode = TWA_OP_FLUSH; 261 generic_cmd->size = 2; 262 generic_cmd->unit = sc->sc_hwunit; 263 generic_cmd->request_id = tr->tr_request_id; 264 generic_cmd->sgl_offset = 0; 265 generic_cmd->host_id = 0; 266 generic_cmd->status = 0; 267 generic_cmd->flags = 0; 268 generic_cmd->count = 0; 269 rv = twa_map_request(tr); 270 s = splbio(); 271 while (tr->tr_status != TWA_CMD_COMPLETE) 272 if ((rv = tsleep(tr, PRIBIO, "twaflush", 60 * hz)) != 0) 273 break; 274 twa_release_request(tr); 275 splx(s); 276 277 return (rv); 278 } 279 280 static int 281 ld_twa_ioctl(struct ld_softc *ld, u_long cmd, void *addr, int32_t flag, bool poll) 282 { 283 int error; 284 285 switch (cmd) { 286 case DIOCCACHESYNC: 287 error = ld_twa_flush(ld, poll); 288 break; 289 290 default: 291 error = EPASSTHROUGH; 292 break; 293 } 294 295 return error; 296 } 297 298 static void 299 ld_twa_adjqparam(device_t self, int openings) 300 { 301 struct ld_twa_softc *sc = device_private(self); 302 struct ld_softc *ld = &sc->sc_ld; 303 304 ldadjqparam(ld, openings); 305 } 306 307 308 static int 309 ld_twa_scsicmd(struct ld_twa_softc *sc, 310 struct twa_request *tr, struct buf *bp) 311 { 312 if (tr->tr_flags == TWA_CMD_DATA_IN) { 313 tr->tr_command->command.cmd_pkt_9k.cdb[0] = WRITE_16; 314 } else { 315 tr->tr_command->command.cmd_pkt_9k.cdb[0] = READ_16; 316 } 317 tr->tr_command->command.cmd_pkt_9k.cdb[1] = 318 (sc->sc_hwunit << 5); /* lun for CDB */ 319 320 _lto8b(htole64(bp->b_rawblkno), 321 &tr->tr_command->command.cmd_pkt_9k.cdb[2]); 322 _lto4b(htole32((bp->b_bcount / TWA_SECTOR_SIZE)), 323 &tr->tr_command->command.cmd_pkt_9k.cdb[10]); 324 325 tr->tr_command->command.cmd_pkt_9k.cdb[14] = 0; 326 tr->tr_command->command.cmd_pkt_9k.cdb[15] = 0; 327 328 return (0); 329 } 330 331 MODULE(MODULE_CLASS_DRIVER, ld_twa, "ld,twa"); 332 333 #ifdef _MODULE 334 /* 335 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" 336 * XXX it will be defined in the common-code module 337 */ 338 #undef CFDRIVER_DECL 339 #define CFDRIVER_DECL(name, class, attr) 340 #include "ioconf.c" 341 #endif 342 343 static int 344 ld_twa_modcmd(modcmd_t cmd, void *opaque) 345 { 346 #ifdef _MODULE 347 /* 348 * We ignore the cfdriver_vec[] that ioconf provides, since 349 * the cfdrivers are attached already. 350 */ 351 static struct cfdriver * const no_cfdriver_vec[] = { NULL }; 352 #endif 353 int error = 0; 354 355 #ifdef _MODULE 356 switch (cmd) { 357 case MODULE_CMD_INIT: 358 error = config_init_component(no_cfdriver_vec, 359 cfattach_ioconf_ld_twa, cfdata_ioconf_ld_twa); 360 break; 361 case MODULE_CMD_FINI: 362 error = config_fini_component(no_cfdriver_vec, 363 cfattach_ioconf_ld_twa, cfdata_ioconf_ld_twa); 364 break; 365 default: 366 error = ENOTTY; 367 break; 368 } 369 #endif 370 371 return error; 372 } 373
Indexes created Sun Sep 21 20:09:37 GMT 2025