ld_twa.c revision 1.4
1 /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */ 2 /* $NetBSD: ld_twa.c,v 1.4 2006/11/16 01:33:09 christos Exp $ */ 3 /*- 4 * Copyright (c) 2004 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Jordan Rhody 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 "Apache" RAID controller front-end for ld(4) driver. 41 */ 42 43 #include <sys/cdefs.h> 44 __KERNEL_RCSID(0, "$NetBSD: ld_twa.c,v 1.4 2006/11/16 01:33:09 christos 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/scsipi/scsipi_all.h> 68 #include <dev/scsipi/scsipi_disk.h> 69 #include <dev/scsipi/scsipiconf.h> 70 #include <dev/scsipi/scsi_disk.h> 71 72 73 #include <dev/pci/pcireg.h> 74 #include <dev/pci/pcivar.h> 75 #include <dev/pci/twareg.h> 76 #include <dev/pci/twavar.h> 77 78 struct ld_twa_softc { 79 struct ld_softc sc_ld; 80 int sc_hwunit; 81 }; 82 83 static void ld_twa_attach(struct device *, struct device *, void *); 84 static int ld_twa_detach(struct device *, int); 85 static int ld_twa_dobio(struct ld_twa_softc *, void *, int, int, 86 struct buf *); 87 static int ld_twa_dump(struct ld_softc *, void *, int, int); 88 static int ld_twa_flush(struct ld_softc *); 89 static void ld_twa_handler(struct twa_request *); 90 static int ld_twa_match(struct device *, struct cfdata *, void *); 91 static int ld_twa_start(struct ld_softc *, struct buf *); 92 93 static void ld_twa_adjqparam(struct device *, int); 94 95 static int ld_twa_scsicmd(struct ld_twa_softc *, 96 struct twa_request *, struct buf *); 97 98 CFATTACH_DECL(ld_twa, sizeof(struct ld_twa_softc), 99 ld_twa_match, ld_twa_attach, ld_twa_detach, NULL); 100 101 static const struct twa_callbacks ld_twa_callbacks = { 102 ld_twa_adjqparam, 103 }; 104 105 static int 106 ld_twa_match(struct device *parent, struct cfdata *match, 107 void *aux) 108 { 109 110 return (1); 111 } 112 113 static void 114 ld_twa_attach(struct device *parent, struct device *self, void *aux) 115 { 116 struct twa_attach_args *twa_args; 117 struct ld_twa_softc *sc; 118 struct ld_softc *ld; 119 struct twa_softc *twa; 120 121 sc = (struct ld_twa_softc *)self; 122 ld = &sc->sc_ld; 123 twa = (struct twa_softc *)parent; 124 twa_args = aux; 125 126 twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks); 127 128 sc->sc_hwunit = twa_args->twaa_unit; 129 ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs()); 130 ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size; 131 ld->sc_flags = LDF_ENABLED; 132 ld->sc_secsize = TWA_SECTOR_SIZE; 133 ld->sc_maxqueuecnt = twa->sc_openings; 134 ld->sc_start = ld_twa_start; 135 ld->sc_dump = ld_twa_dump; 136 ld->sc_flush = ld_twa_flush; 137 ldattach(ld); 138 } 139 140 static int 141 ld_twa_detach(struct device *self, int flags) 142 { 143 int error; 144 145 if ((error = ldbegindetach((struct ld_softc *)self, flags)) != 0) 146 return (error); 147 ldenddetach((struct ld_softc *)self); 148 149 return (0); 150 } 151 152 static int 153 ld_twa_dobio(struct ld_twa_softc *sc, void *data, int datasize, 154 int blkno, struct buf *bp) 155 { 156 int rv; 157 struct twa_request *tr; 158 struct twa_softc *twa; 159 160 twa = (struct twa_softc *)sc->sc_ld.sc_dv.dv_parent; 161 162 if ((tr = twa_get_request(twa, 0)) == NULL) { 163 return (EAGAIN); 164 } 165 if (bp->b_flags & B_READ) { 166 tr->tr_flags = TWA_CMD_DATA_OUT; 167 } else { 168 tr->tr_flags = TWA_CMD_DATA_IN; 169 } 170 171 tr->tr_data = data; 172 tr->tr_length = datasize; 173 tr->tr_cmd_pkt_type = 174 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 175 176 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 177 178 tr->tr_command->command.cmd_pkt_9k.command.opcode = 179 TWA_OP_EXECUTE_SCSI_COMMAND; 180 tr->tr_command->command.cmd_pkt_9k.unit = 181 sc->sc_hwunit; 182 tr->tr_command->command.cmd_pkt_9k.request_id = 183 tr->tr_request_id; 184 tr->tr_command->command.cmd_pkt_9k.status = 0; 185 tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1; 186 tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16; 187 188 /* offset from end of hdr = max cdb len */ 189 ld_twa_scsicmd(sc, tr, bp); 190 191 tr->tr_callback = ld_twa_handler; 192 tr->tr_ld_sc = sc; 193 194 tr->bp = bp; 195 196 rv = twa_map_request(tr); 197 198 return (rv); 199 } 200 201 static int 202 ld_twa_start(struct ld_softc *ld, struct buf *bp) 203 { 204 205 return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data, 206 bp->b_bcount, bp->b_rawblkno, bp)); 207 } 208 209 static void 210 ld_twa_handler(struct twa_request *tr) 211 { 212 uint8_t status; 213 struct buf *bp; 214 struct ld_twa_softc *sc; 215 struct twa_softc *twa; 216 217 bp = tr->bp; 218 sc = (struct ld_twa_softc *)tr->tr_ld_sc; 219 twa = (struct twa_softc *)sc->sc_ld.sc_dv.dv_parent; 220 221 status = tr->tr_command->command.cmd_pkt_9k.status; 222 223 if (status != 0) { 224 bp->b_flags |= B_ERROR; 225 bp->b_error = EIO; 226 bp->b_resid = bp->b_bcount; 227 } else { 228 bp->b_resid = 0; 229 bp->b_error = 0; 230 } 231 twa_release_request(tr); 232 233 lddone(&sc->sc_ld, bp); 234 } 235 236 static int 237 ld_twa_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 238 { 239 240 return (ld_twa_dobio((struct ld_twa_softc *)ld, data, 241 blkcnt * ld->sc_secsize, blkno, NULL)); 242 } 243 244 245 static int 246 ld_twa_flush(struct ld_softc *ld) 247 { 248 int s, rv = 0; 249 struct twa_request *tr; 250 struct twa_softc *twa = (void *)ld->sc_dv.dv_parent; 251 struct ld_twa_softc *sc = (void *)ld; 252 struct twa_command_generic *generic_cmd; 253 254 /* Get a request packet. */ 255 tr = twa_get_request_wait(twa, 0); 256 KASSERT(tr != NULL); 257 258 tr->tr_cmd_pkt_type = 259 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 260 261 tr->tr_callback = twa_request_wait_handler; 262 tr->tr_ld_sc = sc; 263 264 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 265 266 generic_cmd = &(tr->tr_command->command.cmd_pkt_7k.generic); 267 generic_cmd->opcode = TWA_OP_FLUSH; 268 generic_cmd->size = 2; 269 generic_cmd->unit = sc->sc_hwunit; 270 generic_cmd->request_id = tr->tr_request_id; 271 generic_cmd->sgl_offset = 0; 272 generic_cmd->host_id = 0; 273 generic_cmd->status = 0; 274 generic_cmd->flags = 0; 275 generic_cmd->count = 0; 276 rv = twa_map_request(tr); 277 s = splbio(); 278 while (tr->tr_status != TWA_CMD_COMPLETE) 279 if ((rv = tsleep(tr, PRIBIO, "twaflush", 60 * hz)) != 0) 280 break; 281 twa_release_request(tr); 282 splx(s); 283 284 return (rv); 285 } 286 287 static void 288 ld_twa_adjqparam(struct device *self, int openings) 289 { 290 291 ldadjqparam((struct ld_softc *)self, openings); 292 } 293 294 295 static int 296 ld_twa_scsicmd(struct ld_twa_softc *sc, 297 struct twa_request *tr, struct buf *bp) 298 { 299 if (tr->tr_flags == TWA_CMD_DATA_IN) { 300 tr->tr_command->command.cmd_pkt_9k.cdb[0] = WRITE_16; 301 } else { 302 tr->tr_command->command.cmd_pkt_9k.cdb[0] = READ_16; 303 } 304 tr->tr_command->command.cmd_pkt_9k.cdb[1] = 305 (sc->sc_hwunit << 5); /* lun for CDB */ 306 307 _lto8b(htole64(bp->b_rawblkno), 308 &tr->tr_command->command.cmd_pkt_9k.cdb[2]); 309 _lto4b(htole32((bp->b_bcount / TWA_SECTOR_SIZE)), 310 &tr->tr_command->command.cmd_pkt_9k.cdb[10]); 311 312 tr->tr_command->command.cmd_pkt_9k.cdb[14] = 0; 313 tr->tr_command->command.cmd_pkt_9k.cdb[15] = 0; 314 315 return (0); 316 } 317
Indexes created Tue Sep 23 02:09:52 GMT 2025