ld_twa.c revision 1.8
1 /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */ 2 /* $NetBSD: ld_twa.c,v 1.8 2007/08/07 08:00:46 simonb 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 * 3. All advertising materials mentioning features or use of this software 21 * must display the following acknowledgement: 22 * This product includes software developed by the NetBSD 23 * Foundation, Inc. and its contributors. 24 * 4. Neither the name of The NetBSD Foundation nor the names of its 25 * contributors may be used to endorse or promote products derived 26 * from this software without specific prior written permission. 27 * 28 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 29 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 30 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 31 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 32 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 33 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 34 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 35 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 36 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 37 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 38 * POSSIBILITY OF SUCH DAMAGE. 39 */ 40 41 /* 42 * 3ware "Apache" RAID controller front-end for ld(4) driver. 43 */ 44 45 #include <sys/cdefs.h> 46 __KERNEL_RCSID(0, "$NetBSD: ld_twa.c,v 1.8 2007/08/07 08:00:46 simonb Exp $"); 47 48 #include "rnd.h" 49 50 #include <sys/param.h> 51 #include <sys/systm.h> 52 #include <sys/kernel.h> 53 #include <sys/device.h> 54 #include <sys/buf.h> 55 #include <sys/bufq.h> 56 #include <sys/endian.h> 57 #include <sys/dkio.h> 58 #include <sys/disk.h> 59 #include <sys/proc.h> 60 #if NRND > 0 61 #include <sys/rnd.h> 62 #endif 63 64 #include <machine/bus.h> 65 66 #include <uvm/uvm_extern.h> 67 68 #include <dev/ldvar.h> 69 70 #include <dev/scsipi/scsipi_all.h> 71 #include <dev/scsipi/scsipi_disk.h> 72 #include <dev/scsipi/scsipiconf.h> 73 #include <dev/scsipi/scsi_disk.h> 74 75 76 #include <dev/pci/pcireg.h> 77 #include <dev/pci/pcivar.h> 78 #include <dev/pci/twareg.h> 79 #include <dev/pci/twavar.h> 80 81 struct ld_twa_softc { 82 struct ld_softc sc_ld; 83 int sc_hwunit; 84 }; 85 86 static void ld_twa_attach(struct device *, struct device *, void *); 87 static int ld_twa_detach(struct device *, int); 88 static int ld_twa_dobio(struct ld_twa_softc *, void *, size_t, daddr_t, 89 struct buf *); 90 static int ld_twa_dump(struct ld_softc *, void *, int, int); 91 static int ld_twa_flush(struct ld_softc *); 92 static void ld_twa_handler(struct twa_request *); 93 static int ld_twa_match(struct device *, struct cfdata *, void *); 94 static int ld_twa_start(struct ld_softc *, struct buf *); 95 96 static void ld_twa_adjqparam(struct device *, int); 97 98 static int ld_twa_scsicmd(struct ld_twa_softc *, 99 struct twa_request *, struct buf *); 100 101 CFATTACH_DECL(ld_twa, sizeof(struct ld_twa_softc), 102 ld_twa_match, ld_twa_attach, ld_twa_detach, NULL); 103 104 static const struct twa_callbacks ld_twa_callbacks = { 105 ld_twa_adjqparam, 106 }; 107 108 static int 109 ld_twa_match(struct device *parent, struct cfdata *match, void *aux) 110 { 111 112 return (1); 113 } 114 115 static void 116 ld_twa_attach(struct device *parent, struct device *self, void *aux) 117 { 118 struct twa_attach_args *twa_args; 119 struct ld_twa_softc *sc; 120 struct ld_softc *ld; 121 struct twa_softc *twa; 122 123 sc = (struct ld_twa_softc *)self; 124 ld = &sc->sc_ld; 125 twa = (struct twa_softc *)parent; 126 twa_args = aux; 127 128 twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks); 129 130 sc->sc_hwunit = twa_args->twaa_unit; 131 ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs()); 132 ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size; 133 ld->sc_flags = LDF_ENABLED; 134 ld->sc_secsize = TWA_SECTOR_SIZE; 135 ld->sc_maxqueuecnt = twa->sc_openings; 136 ld->sc_start = ld_twa_start; 137 ld->sc_dump = ld_twa_dump; 138 ld->sc_flush = ld_twa_flush; 139 ldattach(ld); 140 } 141 142 static int 143 ld_twa_detach(struct device *self, int flags) 144 { 145 int error; 146 147 if ((error = ldbegindetach((struct ld_softc *)self, flags)) != 0) 148 return (error); 149 ldenddetach((struct ld_softc *)self); 150 151 return (0); 152 } 153 154 static int 155 ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize, 156 daddr_t blkno, struct buf *bp) 157 { 158 int rv; 159 struct twa_request *tr; 160 struct twa_softc *twa; 161 162 twa = (struct twa_softc *)sc->sc_ld.sc_dv.dv_parent; 163 164 if ((tr = twa_get_request(twa, 0)) == NULL) { 165 return (EAGAIN); 166 } 167 if (bp->b_flags & B_READ) { 168 tr->tr_flags = TWA_CMD_DATA_OUT; 169 } else { 170 tr->tr_flags = TWA_CMD_DATA_IN; 171 } 172 173 tr->tr_data = data; 174 tr->tr_length = datasize; 175 tr->tr_cmd_pkt_type = 176 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 177 178 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 179 180 tr->tr_command->command.cmd_pkt_9k.command.opcode = 181 TWA_OP_EXECUTE_SCSI_COMMAND; 182 tr->tr_command->command.cmd_pkt_9k.unit = 183 sc->sc_hwunit; 184 tr->tr_command->command.cmd_pkt_9k.request_id = 185 tr->tr_request_id; 186 tr->tr_command->command.cmd_pkt_9k.status = 0; 187 tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1; 188 tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16; 189 190 /* offset from end of hdr = max cdb len */ 191 ld_twa_scsicmd(sc, tr, bp); 192 193 tr->tr_callback = ld_twa_handler; 194 tr->tr_ld_sc = sc; 195 196 tr->bp = bp; 197 198 rv = twa_map_request(tr); 199 200 return (rv); 201 } 202 203 static int 204 ld_twa_start(struct ld_softc *ld, struct buf *bp) 205 { 206 207 return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data, 208 bp->b_bcount, bp->b_rawblkno, bp)); 209 } 210 211 static void 212 ld_twa_handler(struct twa_request *tr) 213 { 214 uint8_t status; 215 struct buf *bp; 216 struct ld_twa_softc *sc; 217 struct twa_softc *twa; 218 219 bp = tr->bp; 220 sc = (struct ld_twa_softc *)tr->tr_ld_sc; 221 twa = (struct twa_softc *)sc->sc_ld.sc_dv.dv_parent; 222 223 status = tr->tr_command->command.cmd_pkt_9k.status; 224 225 if (status != 0) { 226 bp->b_error = EIO; 227 bp->b_resid = bp->b_bcount; 228 } else { 229 bp->b_resid = 0; 230 bp->b_error = 0; 231 } 232 twa_release_request(tr); 233 234 lddone(&sc->sc_ld, bp); 235 } 236 237 static int 238 ld_twa_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 239 { 240 241 #if 0 242 /* XXX Unsafe right now. */ 243 return (ld_twa_dobio((struct ld_twa_softc *)ld, data, 244 blkcnt * ld->sc_secsize, blkno, NULL)); 245 #else 246 return EIO; 247 #endif 248 249 } 250 251 252 static int 253 ld_twa_flush(struct ld_softc *ld) 254 { 255 int s, rv = 0; 256 struct twa_request *tr; 257 struct twa_softc *twa = (void *)ld->sc_dv.dv_parent; 258 struct ld_twa_softc *sc = (void *)ld; 259 struct twa_command_generic *generic_cmd; 260 261 /* Get a request packet. */ 262 tr = twa_get_request_wait(twa, 0); 263 KASSERT(tr != NULL); 264 265 tr->tr_cmd_pkt_type = 266 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 267 268 tr->tr_callback = twa_request_wait_handler; 269 tr->tr_ld_sc = sc; 270 271 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 272 273 generic_cmd = &(tr->tr_command->command.cmd_pkt_7k.generic); 274 generic_cmd->opcode = TWA_OP_FLUSH; 275 generic_cmd->size = 2; 276 generic_cmd->unit = sc->sc_hwunit; 277 generic_cmd->request_id = tr->tr_request_id; 278 generic_cmd->sgl_offset = 0; 279 generic_cmd->host_id = 0; 280 generic_cmd->status = 0; 281 generic_cmd->flags = 0; 282 generic_cmd->count = 0; 283 rv = twa_map_request(tr); 284 s = splbio(); 285 while (tr->tr_status != TWA_CMD_COMPLETE) 286 if ((rv = tsleep(tr, PRIBIO, "twaflush", 60 * hz)) != 0) 287 break; 288 twa_release_request(tr); 289 splx(s); 290 291 return (rv); 292 } 293 294 static void 295 ld_twa_adjqparam(struct device *self, int openings) 296 { 297 298 ldadjqparam((struct ld_softc *)self, openings); 299 } 300 301 302 static int 303 ld_twa_scsicmd(struct ld_twa_softc *sc, 304 struct twa_request *tr, struct buf *bp) 305 { 306 if (tr->tr_flags == TWA_CMD_DATA_IN) { 307 tr->tr_command->command.cmd_pkt_9k.cdb[0] = WRITE_16; 308 } else { 309 tr->tr_command->command.cmd_pkt_9k.cdb[0] = READ_16; 310 } 311 tr->tr_command->command.cmd_pkt_9k.cdb[1] = 312 (sc->sc_hwunit << 5); /* lun for CDB */ 313 314 _lto8b(htole64(bp->b_rawblkno), 315 &tr->tr_command->command.cmd_pkt_9k.cdb[2]); 316 _lto4b(htole32((bp->b_bcount / TWA_SECTOR_SIZE)), 317 &tr->tr_command->command.cmd_pkt_9k.cdb[10]); 318 319 tr->tr_command->command.cmd_pkt_9k.cdb[14] = 0; 320 tr->tr_command->command.cmd_pkt_9k.cdb[15] = 0; 321 322 return (0); 323 } 324
Indexes created Thu Sep 25 16:09:42 GMT 2025