ld_twa.c revision 1.12
1 /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */ 2 /* $NetBSD: ld_twa.c,v 1.12 2008/08/11 06:43:38 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 * 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 1.12 2008/08/11 06:43:38 simonb Exp $"); 40 41 #include "rnd.h" 42 43 #include <sys/param.h> 44 #include <sys/systm.h> 45 #include <sys/kernel.h> 46 #include <sys/device.h> 47 #include <sys/buf.h> 48 #include <sys/bufq.h> 49 #include <sys/endian.h> 50 #include <sys/dkio.h> 51 #include <sys/disk.h> 52 #include <sys/proc.h> 53 #if NRND > 0 54 #include <sys/rnd.h> 55 #endif 56 57 #include <sys/bus.h> 58 59 #include <uvm/uvm_extern.h> 60 61 #include <dev/ldvar.h> 62 63 #include <dev/scsipi/scsipi_all.h> 64 #include <dev/scsipi/scsipi_disk.h> 65 #include <dev/scsipi/scsipiconf.h> 66 #include <dev/scsipi/scsi_disk.h> 67 68 69 #include <dev/pci/pcireg.h> 70 #include <dev/pci/pcivar.h> 71 #include <dev/pci/twareg.h> 72 #include <dev/pci/twavar.h> 73 74 struct ld_twa_softc { 75 struct ld_softc sc_ld; 76 int sc_hwunit; 77 }; 78 79 static void ld_twa_attach(struct device *, struct device *, void *); 80 static int ld_twa_detach(struct device *, int); 81 static int ld_twa_dobio(struct ld_twa_softc *, void *, size_t, daddr_t, 82 struct buf *); 83 static int ld_twa_dump(struct ld_softc *, void *, int, int); 84 static int ld_twa_flush(struct ld_softc *, int); 85 static void ld_twa_handler(struct twa_request *); 86 static int ld_twa_match(struct device *, struct cfdata *, void *); 87 static int ld_twa_start(struct ld_softc *, struct buf *); 88 89 static void ld_twa_adjqparam(struct device *, int); 90 91 static int ld_twa_scsicmd(struct ld_twa_softc *, 92 struct twa_request *, struct buf *); 93 94 CFATTACH_DECL(ld_twa, sizeof(struct ld_twa_softc), 95 ld_twa_match, ld_twa_attach, ld_twa_detach, NULL); 96 97 static const struct twa_callbacks ld_twa_callbacks = { 98 ld_twa_adjqparam, 99 }; 100 101 static int 102 ld_twa_match(struct device *parent, struct cfdata *match, void *aux) 103 { 104 105 return (1); 106 } 107 108 static void 109 ld_twa_attach(struct device *parent, struct device *self, void *aux) 110 { 111 struct twa_attach_args *twa_args; 112 struct ld_twa_softc *sc; 113 struct ld_softc *ld; 114 struct twa_softc *twa; 115 116 sc = (struct ld_twa_softc *)self; 117 ld = &sc->sc_ld; 118 twa = (struct twa_softc *)parent; 119 twa_args = aux; 120 121 twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks); 122 123 sc->sc_hwunit = twa_args->twaa_unit; 124 ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs()); 125 ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size; 126 ld->sc_flags = LDF_ENABLED; 127 ld->sc_secsize = TWA_SECTOR_SIZE; 128 ld->sc_maxqueuecnt = twa->sc_units[sc->sc_hwunit].td_openings; 129 ld->sc_start = ld_twa_start; 130 ld->sc_dump = ld_twa_dump; 131 ld->sc_flush = ld_twa_flush; 132 ldattach(ld); 133 } 134 135 static int 136 ld_twa_detach(struct device *self, int flags) 137 { 138 int error; 139 140 if ((error = ldbegindetach((struct ld_softc *)self, flags)) != 0) 141 return (error); 142 ldenddetach((struct ld_softc *)self); 143 144 return (0); 145 } 146 147 static int 148 ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize, 149 daddr_t blkno, struct buf *bp) 150 { 151 int rv; 152 struct twa_request *tr; 153 struct twa_softc *twa; 154 155 twa = (struct twa_softc *)sc->sc_ld.sc_dv.dv_parent; 156 157 if ((tr = twa_get_request(twa, 0)) == NULL) { 158 return (EAGAIN); 159 } 160 if (bp->b_flags & B_READ) { 161 tr->tr_flags = TWA_CMD_DATA_OUT; 162 } else { 163 tr->tr_flags = TWA_CMD_DATA_IN; 164 } 165 166 tr->tr_data = data; 167 tr->tr_length = datasize; 168 tr->tr_cmd_pkt_type = 169 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 170 171 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 172 173 tr->tr_command->command.cmd_pkt_9k.command.opcode = 174 TWA_OP_EXECUTE_SCSI_COMMAND; 175 tr->tr_command->command.cmd_pkt_9k.unit = 176 sc->sc_hwunit; 177 tr->tr_command->command.cmd_pkt_9k.request_id = 178 tr->tr_request_id; 179 tr->tr_command->command.cmd_pkt_9k.status = 0; 180 tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1; 181 tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16; 182 183 /* offset from end of hdr = max cdb len */ 184 ld_twa_scsicmd(sc, tr, bp); 185 186 tr->tr_callback = ld_twa_handler; 187 tr->tr_ld_sc = sc; 188 189 tr->bp = bp; 190 191 rv = twa_map_request(tr); 192 193 return (rv); 194 } 195 196 static int 197 ld_twa_start(struct ld_softc *ld, struct buf *bp) 198 { 199 200 return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data, 201 bp->b_bcount, bp->b_rawblkno, bp)); 202 } 203 204 static void 205 ld_twa_handler(struct twa_request *tr) 206 { 207 uint8_t status; 208 struct buf *bp; 209 struct ld_twa_softc *sc; 210 struct twa_softc *twa; 211 212 bp = tr->bp; 213 sc = (struct ld_twa_softc *)tr->tr_ld_sc; 214 twa = (struct twa_softc *)sc->sc_ld.sc_dv.dv_parent; 215 216 status = tr->tr_command->command.cmd_pkt_9k.status; 217 218 if (status != 0) { 219 bp->b_error = EIO; 220 bp->b_resid = bp->b_bcount; 221 } else { 222 bp->b_resid = 0; 223 bp->b_error = 0; 224 } 225 twa_release_request(tr); 226 227 lddone(&sc->sc_ld, bp); 228 } 229 230 static int 231 ld_twa_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 232 { 233 234 #if 0 235 /* XXX Unsafe right now. */ 236 return (ld_twa_dobio((struct ld_twa_softc *)ld, data, 237 blkcnt * ld->sc_secsize, blkno, NULL)); 238 #else 239 return EIO; 240 #endif 241 242 } 243 244 245 static int 246 ld_twa_flush(struct ld_softc *ld, int flags) 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 Wed Sep 24 15:09:51 GMT 2025