ld_twa.c revision 1.18
1 /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */ 2 /* $NetBSD: ld_twa.c,v 1.18 2016/09/16 15:20:50 jdolecek 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 1.18 2016/09/16 15:20:50 jdolecek 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 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 struct ld_twa_softc { 68 struct ld_softc sc_ld; 69 int sc_hwunit; 70 }; 71 72 static void ld_twa_attach(device_t, device_t, void *); 73 static int ld_twa_detach(device_t, int); 74 static int ld_twa_dobio(struct ld_twa_softc *, void *, size_t, daddr_t, 75 struct buf *); 76 static int ld_twa_dump(struct ld_softc *, void *, int, int); 77 static int ld_twa_flush(struct ld_softc *, int); 78 static void ld_twa_handler(struct twa_request *); 79 static int ld_twa_match(device_t, cfdata_t, void *); 80 static int ld_twa_start(struct ld_softc *, struct buf *); 81 82 static void ld_twa_adjqparam(device_t, int); 83 84 static int ld_twa_scsicmd(struct ld_twa_softc *, 85 struct twa_request *, struct buf *); 86 87 CFATTACH_DECL_NEW(ld_twa, sizeof(struct ld_twa_softc), 88 ld_twa_match, ld_twa_attach, ld_twa_detach, NULL); 89 90 static const struct twa_callbacks ld_twa_callbacks = { 91 ld_twa_adjqparam, 92 }; 93 94 static int 95 ld_twa_match(device_t parent, cfdata_t match, void *aux) 96 { 97 98 return (1); 99 } 100 101 static void 102 ld_twa_attach(device_t parent, device_t self, void *aux) 103 { 104 struct twa_attach_args *twa_args = aux; 105 struct ld_twa_softc *sc = device_private(self); 106 struct ld_softc *ld = &sc->sc_ld; 107 struct twa_softc *twa = device_private(parent); 108 109 ld->sc_dv = self; 110 111 twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks); 112 113 sc->sc_hwunit = twa_args->twaa_unit; 114 ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs()); 115 ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size; 116 ld->sc_flags = LDF_ENABLED; 117 ld->sc_secsize = TWA_SECTOR_SIZE; 118 ld->sc_maxqueuecnt = twa->sc_units[sc->sc_hwunit].td_openings; 119 ld->sc_start = ld_twa_start; 120 ld->sc_dump = ld_twa_dump; 121 ld->sc_flush = ld_twa_flush; 122 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); 123 } 124 125 static int 126 ld_twa_detach(device_t self, int flags) 127 { 128 struct ld_twa_softc *sc = device_private(self); 129 struct ld_softc *ld = &sc->sc_ld; 130 int error; 131 132 if ((error = ldbegindetach(ld, flags)) != 0) 133 return (error); 134 ldenddetach(ld); 135 136 return (0); 137 } 138 139 static int 140 ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize, 141 daddr_t blkno, struct buf *bp) 142 { 143 int rv; 144 struct twa_request *tr; 145 struct twa_softc *twa; 146 147 twa = device_private(device_parent(sc->sc_ld.sc_dv)); 148 149 if ((tr = twa_get_request(twa, 0)) == NULL) { 150 return (EAGAIN); 151 } 152 if (bp->b_flags & B_READ) { 153 tr->tr_flags = TWA_CMD_DATA_OUT; 154 } else { 155 tr->tr_flags = TWA_CMD_DATA_IN; 156 } 157 158 tr->tr_data = data; 159 tr->tr_length = datasize; 160 tr->tr_cmd_pkt_type = 161 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 162 163 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 164 165 tr->tr_command->command.cmd_pkt_9k.command.opcode = 166 TWA_OP_EXECUTE_SCSI_COMMAND; 167 tr->tr_command->command.cmd_pkt_9k.unit = 168 sc->sc_hwunit; 169 tr->tr_command->command.cmd_pkt_9k.request_id = 170 tr->tr_request_id; 171 tr->tr_command->command.cmd_pkt_9k.status = 0; 172 tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1; 173 tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16; 174 175 /* offset from end of hdr = max cdb len */ 176 ld_twa_scsicmd(sc, tr, bp); 177 178 tr->tr_callback = ld_twa_handler; 179 tr->tr_ld_sc = sc; 180 181 tr->bp = bp; 182 183 rv = twa_map_request(tr); 184 185 return (rv); 186 } 187 188 static int 189 ld_twa_start(struct ld_softc *ld, struct buf *bp) 190 { 191 192 return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data, 193 bp->b_bcount, bp->b_rawblkno, bp)); 194 } 195 196 static void 197 ld_twa_handler(struct twa_request *tr) 198 { 199 uint8_t status; 200 struct buf *bp; 201 struct ld_twa_softc *sc; 202 203 bp = tr->bp; 204 sc = (struct ld_twa_softc *)tr->tr_ld_sc; 205 206 status = tr->tr_command->command.cmd_pkt_9k.status; 207 208 if (status != 0) { 209 bp->b_error = EIO; 210 bp->b_resid = bp->b_bcount; 211 } else { 212 bp->b_resid = 0; 213 bp->b_error = 0; 214 } 215 twa_release_request(tr); 216 217 lddone(&sc->sc_ld, bp); 218 } 219 220 static int 221 ld_twa_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 222 { 223 224 #if 0 225 /* XXX Unsafe right now. */ 226 return (ld_twa_dobio((struct ld_twa_softc *)ld, data, 227 blkcnt * ld->sc_secsize, blkno, NULL)); 228 #else 229 return EIO; 230 #endif 231 232 } 233 234 235 static int 236 ld_twa_flush(struct ld_softc *ld, int flags) 237 { 238 int s, rv = 0; 239 struct twa_request *tr; 240 struct twa_softc *twa = device_private(device_parent(ld->sc_dv)); 241 struct ld_twa_softc *sc = (void *)ld; 242 struct twa_command_generic *generic_cmd; 243 244 /* Get a request packet. */ 245 tr = twa_get_request_wait(twa, 0); 246 KASSERT(tr != NULL); 247 248 tr->tr_cmd_pkt_type = 249 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 250 251 tr->tr_callback = twa_request_wait_handler; 252 tr->tr_ld_sc = sc; 253 254 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 255 256 generic_cmd = &(tr->tr_command->command.cmd_pkt_7k.generic); 257 generic_cmd->opcode = TWA_OP_FLUSH; 258 generic_cmd->size = 2; 259 generic_cmd->unit = sc->sc_hwunit; 260 generic_cmd->request_id = tr->tr_request_id; 261 generic_cmd->sgl_offset = 0; 262 generic_cmd->host_id = 0; 263 generic_cmd->status = 0; 264 generic_cmd->flags = 0; 265 generic_cmd->count = 0; 266 rv = twa_map_request(tr); 267 s = splbio(); 268 while (tr->tr_status != TWA_CMD_COMPLETE) 269 if ((rv = tsleep(tr, PRIBIO, "twaflush", 60 * hz)) != 0) 270 break; 271 twa_release_request(tr); 272 splx(s); 273 274 return (rv); 275 } 276 277 static void 278 ld_twa_adjqparam(device_t self, int openings) 279 { 280 struct ld_twa_softc *sc = device_private(self); 281 struct ld_softc *ld = &sc->sc_ld; 282 283 ldadjqparam(ld, openings); 284 } 285 286 287 static int 288 ld_twa_scsicmd(struct ld_twa_softc *sc, 289 struct twa_request *tr, struct buf *bp) 290 { 291 if (tr->tr_flags == TWA_CMD_DATA_IN) { 292 tr->tr_command->command.cmd_pkt_9k.cdb[0] = WRITE_16; 293 } else { 294 tr->tr_command->command.cmd_pkt_9k.cdb[0] = READ_16; 295 } 296 tr->tr_command->command.cmd_pkt_9k.cdb[1] = 297 (sc->sc_hwunit << 5); /* lun for CDB */ 298 299 _lto8b(htole64(bp->b_rawblkno), 300 &tr->tr_command->command.cmd_pkt_9k.cdb[2]); 301 _lto4b(htole32((bp->b_bcount / TWA_SECTOR_SIZE)), 302 &tr->tr_command->command.cmd_pkt_9k.cdb[10]); 303 304 tr->tr_command->command.cmd_pkt_9k.cdb[14] = 0; 305 tr->tr_command->command.cmd_pkt_9k.cdb[15] = 0; 306 307 return (0); 308 } 309
Indexes created Fri Sep 26 08:10:20 GMT 2025