1 /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */ 2 /* $NetBSD: ld_twa.c,v 1.15 2012/02/02 19:43:06 tls 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 1.15 2012/02/02 19:43:06 tls 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 #include <sys/rnd.h> 52 53 #include <sys/bus.h> 54 55 #include <dev/ldvar.h> 56 57 #include <dev/scsipi/scsipi_all.h> 58 #include <dev/scsipi/scsipi_disk.h> 59 #include <dev/scsipi/scsipiconf.h> 60 #include <dev/scsipi/scsi_disk.h> 61 62 63 #include <dev/pci/pcireg.h> 64 #include <dev/pci/pcivar.h> 65 #include <dev/pci/twareg.h> 66 #include <dev/pci/twavar.h> 67 68 struct ld_twa_softc { 69 struct ld_softc sc_ld; 70 int sc_hwunit; 71 }; 72 73 static void ld_twa_attach(device_t, device_t, void *); 74 static int ld_twa_detach(device_t, int); 75 static int ld_twa_dobio(struct ld_twa_softc *, void *, size_t, daddr_t, 76 struct buf *); 77 static int ld_twa_dump(struct ld_softc *, void *, int, int); 78 static int ld_twa_flush(struct ld_softc *, int); 79 static void ld_twa_handler(struct twa_request *); 80 static int ld_twa_match(device_t, cfdata_t, void *); 81 static int ld_twa_start(struct ld_softc *, struct buf *); 82 83 static void ld_twa_adjqparam(device_t, int); 84 85 static int ld_twa_scsicmd(struct ld_twa_softc *, 86 struct twa_request *, struct buf *); 87 88 CFATTACH_DECL_NEW(ld_twa, sizeof(struct ld_twa_softc), 89 ld_twa_match, ld_twa_attach, ld_twa_detach, NULL); 90 91 static const struct twa_callbacks ld_twa_callbacks = { 92 ld_twa_adjqparam, 93 }; 94 95 static int 96 ld_twa_match(device_t parent, cfdata_t match, void *aux) 97 { 98 99 return (1); 100 } 101 102 static void 103 ld_twa_attach(device_t parent, device_t self, void *aux) 104 { 105 struct twa_attach_args *twa_args = aux; 106 struct ld_twa_softc *sc = device_private(self); 107 struct ld_softc *ld = &sc->sc_ld; 108 struct twa_softc *twa = device_private(parent); 109 110 ld->sc_dv = self; 111 112 twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks); 113 114 sc->sc_hwunit = twa_args->twaa_unit; 115 ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs()); 116 ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size; 117 ld->sc_flags = LDF_ENABLED; 118 ld->sc_secsize = TWA_SECTOR_SIZE; 119 ld->sc_maxqueuecnt = twa->sc_units[sc->sc_hwunit].td_openings; 120 ld->sc_start = ld_twa_start; 121 ld->sc_dump = ld_twa_dump; 122 ld->sc_flush = ld_twa_flush; 123 ldattach(ld); 124 } 125 126 static int 127 ld_twa_detach(device_t self, int flags) 128 { 129 struct ld_twa_softc *sc = device_private(self); 130 struct ld_softc *ld = &sc->sc_ld; 131 int error; 132 133 if ((error = ldbegindetach(ld, flags)) != 0) 134 return (error); 135 ldenddetach(ld); 136 137 return (0); 138 } 139 140 static int 141 ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize, 142 daddr_t blkno, struct buf *bp) 143 { 144 int rv; 145 struct twa_request *tr; 146 struct twa_softc *twa; 147 148 twa = device_private(device_parent(sc->sc_ld.sc_dv)); 149 150 if ((tr = twa_get_request(twa, 0)) == NULL) { 151 return (EAGAIN); 152 } 153 if (bp->b_flags & B_READ) { 154 tr->tr_flags = TWA_CMD_DATA_OUT; 155 } else { 156 tr->tr_flags = TWA_CMD_DATA_IN; 157 } 158 159 tr->tr_data = data; 160 tr->tr_length = datasize; 161 tr->tr_cmd_pkt_type = 162 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 163 164 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 165 166 tr->tr_command->command.cmd_pkt_9k.command.opcode = 167 TWA_OP_EXECUTE_SCSI_COMMAND; 168 tr->tr_command->command.cmd_pkt_9k.unit = 169 sc->sc_hwunit; 170 tr->tr_command->command.cmd_pkt_9k.request_id = 171 tr->tr_request_id; 172 tr->tr_command->command.cmd_pkt_9k.status = 0; 173 tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1; 174 tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16; 175 176 /* offset from end of hdr = max cdb len */ 177 ld_twa_scsicmd(sc, tr, bp); 178 179 tr->tr_callback = ld_twa_handler; 180 tr->tr_ld_sc = sc; 181 182 tr->bp = bp; 183 184 rv = twa_map_request(tr); 185 186 return (rv); 187 } 188 189 static int 190 ld_twa_start(struct ld_softc *ld, struct buf *bp) 191 { 192 193 return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data, 194 bp->b_bcount, bp->b_rawblkno, bp)); 195 } 196 197 static void 198 ld_twa_handler(struct twa_request *tr) 199 { 200 uint8_t status; 201 struct buf *bp; 202 struct ld_twa_softc *sc; 203 struct twa_softc *twa; 204 205 bp = tr->bp; 206 sc = (struct ld_twa_softc *)tr->tr_ld_sc; 207 twa = device_private(device_parent(sc->sc_ld.sc_dv)); 208 209 status = tr->tr_command->command.cmd_pkt_9k.status; 210 211 if (status != 0) { 212 bp->b_error = EIO; 213 bp->b_resid = bp->b_bcount; 214 } else { 215 bp->b_resid = 0; 216 bp->b_error = 0; 217 } 218 twa_release_request(tr); 219 220 lddone(&sc->sc_ld, bp); 221 } 222 223 static int 224 ld_twa_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 225 { 226 227 #if 0 228 /* XXX Unsafe right now. */ 229 return (ld_twa_dobio((struct ld_twa_softc *)ld, data, 230 blkcnt * ld->sc_secsize, blkno, NULL)); 231 #else 232 return EIO; 233 #endif 234 235 } 236 237 238 static int 239 ld_twa_flush(struct ld_softc *ld, int flags) 240 { 241 int s, rv = 0; 242 struct twa_request *tr; 243 struct twa_softc *twa = device_private(device_parent(ld->sc_dv)); 244 struct ld_twa_softc *sc = (void *)ld; 245 struct twa_command_generic *generic_cmd; 246 247 /* Get a request packet. */ 248 tr = twa_get_request_wait(twa, 0); 249 KASSERT(tr != NULL); 250 251 tr->tr_cmd_pkt_type = 252 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); 253 254 tr->tr_callback = twa_request_wait_handler; 255 tr->tr_ld_sc = sc; 256 257 tr->tr_command->cmd_hdr.header_desc.size_header = 128; 258 259 generic_cmd = &(tr->tr_command->command.cmd_pkt_7k.generic); 260 generic_cmd->opcode = TWA_OP_FLUSH; 261 generic_cmd->size = 2; 262 generic_cmd->unit = sc->sc_hwunit; 263 generic_cmd->request_id = tr->tr_request_id; 264 generic_cmd->sgl_offset = 0; 265 generic_cmd->host_id = 0; 266 generic_cmd->status = 0; 267 generic_cmd->flags = 0; 268 generic_cmd->count = 0; 269 rv = twa_map_request(tr); 270 s = splbio(); 271 while (tr->tr_status != TWA_CMD_COMPLETE) 272 if ((rv = tsleep(tr, PRIBIO, "twaflush", 60 * hz)) != 0) 273 break; 274 twa_release_request(tr); 275 splx(s); 276 277 return (rv); 278 } 279 280 static void 281 ld_twa_adjqparam(device_t self, int openings) 282 { 283 struct ld_twa_softc *sc = device_private(self); 284 struct ld_softc *ld = &sc->sc_ld; 285 286 ldadjqparam(ld, openings); 287 } 288 289 290 static int 291 ld_twa_scsicmd(struct ld_twa_softc *sc, 292 struct twa_request *tr, struct buf *bp) 293 { 294 if (tr->tr_flags == TWA_CMD_DATA_IN) { 295 tr->tr_command->command.cmd_pkt_9k.cdb[0] = WRITE_16; 296 } else { 297 tr->tr_command->command.cmd_pkt_9k.cdb[0] = READ_16; 298 } 299 tr->tr_command->command.cmd_pkt_9k.cdb[1] = 300 (sc->sc_hwunit << 5); /* lun for CDB */ 301 302 _lto8b(htole64(bp->b_rawblkno), 303 &tr->tr_command->command.cmd_pkt_9k.cdb[2]); 304 _lto4b(htole32((bp->b_bcount / TWA_SECTOR_SIZE)), 305 &tr->tr_command->command.cmd_pkt_9k.cdb[10]); 306 307 tr->tr_command->command.cmd_pkt_9k.cdb[14] = 0; 308 tr->tr_command->command.cmd_pkt_9k.cdb[15] = 0; 309 310 return (0); 311 } 312