ld_twa.c revision 1.13
1 /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */ 2 /* $NetBSD: ld_twa.c,v 1.13 2008/09/09 12:45:40 tron 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 1.13 2008/09/09 12:45:40 tron 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(device_t, device_t, void *); 80 static int ld_twa_detach(device_t, 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(device_t, cfdata_t, void *); 87 static int ld_twa_start(struct ld_softc *, struct buf *); 88 89 static void ld_twa_adjqparam(device_t, int); 90 91 static int ld_twa_scsicmd(struct ld_twa_softc *, 92 struct twa_request *, struct buf *); 93 94 CFATTACH_DECL_NEW(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(device_t parent, cfdata_t match, void *aux) 103 { 104 105 return (1); 106 } 107 108 static void 109 ld_twa_attach(device_t parent, device_t self, void *aux) 110 { 111 struct twa_attach_args *twa_args = aux; 112 struct ld_twa_softc *sc = device_private(self); 113 struct ld_softc *ld = &sc->sc_ld; 114 struct twa_softc *twa = device_private(parent); 115 116 ld->sc_dv = self; 117 118 twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks); 119 120 sc->sc_hwunit = twa_args->twaa_unit; 121 ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs()); 122 ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size; 123 ld->sc_flags = LDF_ENABLED; 124 ld->sc_secsize = TWA_SECTOR_SIZE; 125 ld->sc_maxqueuecnt = twa->sc_units[sc->sc_hwunit].td_openings; 126 ld->sc_start = ld_twa_start; 127 ld->sc_dump = ld_twa_dump; 128 ld->sc_flush = ld_twa_flush; 129 ldattach(ld); 130 } 131 132 static int 133 ld_twa_detach(device_t self, int flags) 134 { 135 struct ld_twa_softc *sc = device_private(self); 136 struct ld_softc *ld = &sc->sc_ld; 137 int error; 138 139 if ((error = ldbegindetach(ld, flags)) != 0) 140 return (error); 141 ldenddetach(ld); 142 143 return (0); 144 } 145 146 static int 147 ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize, 148 daddr_t blkno, struct buf *bp) 149 { 150 int rv; 151 struct twa_request *tr; 152 struct twa_softc *twa; 153 154 twa = device_private(device_parent(sc->sc_ld.sc_dv)); 155 156 if ((tr = twa_get_request(twa, 0)) == NULL) { 157 return (EAGAIN); 158 } 159 if (bp->b_flags & B_READ) { 160 tr->tr_flags = TWA_CMD_DATA_OUT; 161 } else { 162 tr->tr_flags = TWA_CMD_DATA_IN; 163 } 164 165 tr->tr_data = data; 166 tr->tr_length = datasize; 167 tr->tr_cmd_pkt_type = 168 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 169 170 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 171 172 tr->tr_command->command.cmd_pkt_9k.command.opcode = 173 TWA_OP_EXECUTE_SCSI_COMMAND; 174 tr->tr_command->command.cmd_pkt_9k.unit = 175 sc->sc_hwunit; 176 tr->tr_command->command.cmd_pkt_9k.request_id = 177 tr->tr_request_id; 178 tr->tr_command->command.cmd_pkt_9k.status = 0; 179 tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1; 180 tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16; 181 182 /* offset from end of hdr = max cdb len */ 183 ld_twa_scsicmd(sc, tr, bp); 184 185 tr->tr_callback = ld_twa_handler; 186 tr->tr_ld_sc = sc; 187 188 tr->bp = bp; 189 190 rv = twa_map_request(tr); 191 192 return (rv); 193 } 194 195 static int 196 ld_twa_start(struct ld_softc *ld, struct buf *bp) 197 { 198 199 return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data, 200 bp->b_bcount, bp->b_rawblkno, bp)); 201 } 202 203 static void 204 ld_twa_handler(struct twa_request *tr) 205 { 206 uint8_t status; 207 struct buf *bp; 208 struct ld_twa_softc *sc; 209 struct twa_softc *twa; 210 211 bp = tr->bp; 212 sc = (struct ld_twa_softc *)tr->tr_ld_sc; 213 twa = device_private(device_parent(sc->sc_ld.sc_dv)); 214 215 status = tr->tr_command->command.cmd_pkt_9k.status; 216 217 if (status != 0) { 218 bp->b_error = EIO; 219 bp->b_resid = bp->b_bcount; 220 } else { 221 bp->b_resid = 0; 222 bp->b_error = 0; 223 } 224 twa_release_request(tr); 225 226 lddone(&sc->sc_ld, bp); 227 } 228 229 static int 230 ld_twa_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 231 { 232 233 #if 0 234 /* XXX Unsafe right now. */ 235 return (ld_twa_dobio((struct ld_twa_softc *)ld, data, 236 blkcnt * ld->sc_secsize, blkno, NULL)); 237 #else 238 return EIO; 239 #endif 240 241 } 242 243 244 static int 245 ld_twa_flush(struct ld_softc *ld, int flags) 246 { 247 int s, rv = 0; 248 struct twa_request *tr; 249 struct twa_softc *twa = device_private(device_parent(ld->sc_dv)); 250 struct ld_twa_softc *sc = (void *)ld; 251 struct twa_command_generic *generic_cmd; 252 253 /* Get a request packet. */ 254 tr = twa_get_request_wait(twa, 0); 255 KASSERT(tr != NULL); 256 257 tr->tr_cmd_pkt_type = 258 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 259 260 tr->tr_callback = twa_request_wait_handler; 261 tr->tr_ld_sc = sc; 262 263 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 264 265 generic_cmd = &(tr->tr_command->command.cmd_pkt_7k.generic); 266 generic_cmd->opcode = TWA_OP_FLUSH; 267 generic_cmd->size = 2; 268 generic_cmd->unit = sc->sc_hwunit; 269 generic_cmd->request_id = tr->tr_request_id; 270 generic_cmd->sgl_offset = 0; 271 generic_cmd->host_id = 0; 272 generic_cmd->status = 0; 273 generic_cmd->flags = 0; 274 generic_cmd->count = 0; 275 rv = twa_map_request(tr); 276 s = splbio(); 277 while (tr->tr_status != TWA_CMD_COMPLETE) 278 if ((rv = tsleep(tr, PRIBIO, "twaflush", 60 * hz)) != 0) 279 break; 280 twa_release_request(tr); 281 splx(s); 282 283 return (rv); 284 } 285 286 static void 287 ld_twa_adjqparam(device_t self, int openings) 288 { 289 struct ld_twa_softc *sc = device_private(self); 290 struct ld_softc *ld = &sc->sc_ld; 291 292 ldadjqparam(ld, openings); 293 } 294 295 296 static int 297 ld_twa_scsicmd(struct ld_twa_softc *sc, 298 struct twa_request *tr, struct buf *bp) 299 { 300 if (tr->tr_flags == TWA_CMD_DATA_IN) { 301 tr->tr_command->command.cmd_pkt_9k.cdb[0] = WRITE_16; 302 } else { 303 tr->tr_command->command.cmd_pkt_9k.cdb[0] = READ_16; 304 } 305 tr->tr_command->command.cmd_pkt_9k.cdb[1] = 306 (sc->sc_hwunit << 5); /* lun for CDB */ 307 308 _lto8b(htole64(bp->b_rawblkno), 309 &tr->tr_command->command.cmd_pkt_9k.cdb[2]); 310 _lto4b(htole32((bp->b_bcount / TWA_SECTOR_SIZE)), 311 &tr->tr_command->command.cmd_pkt_9k.cdb[10]); 312 313 tr->tr_command->command.cmd_pkt_9k.cdb[14] = 0; 314 tr->tr_command->command.cmd_pkt_9k.cdb[15] = 0; 315 316 return (0); 317 } 318
Indexes created Tue Sep 23 07:09:52 GMT 2025