1 /* $NetBSD: ld_icp.c,v 1.27 2015/04/13 16:33:24 riastradh Exp $ */ 2 3 /*- 4 * Copyright (c) 2002 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Andrew Doran. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 /* 33 * ICP-Vortex "GDT" front-end for ld(4) driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ld_icp.c,v 1.27 2015/04/13 16:33:24 riastradh Exp $"); 38 39 #include <sys/param.h> 40 #include <sys/systm.h> 41 #include <sys/kernel.h> 42 #include <sys/device.h> 43 #include <sys/buf.h> 44 #include <sys/bufq.h> 45 #include <sys/endian.h> 46 #include <sys/dkio.h> 47 #include <sys/disk.h> 48 49 #include <sys/bus.h> 50 51 #include <dev/ldvar.h> 52 53 #include <dev/ic/icpreg.h> 54 #include <dev/ic/icpvar.h> 55 56 struct ld_icp_softc { 57 struct ld_softc sc_ld; 58 int sc_hwunit; 59 }; 60 61 void ld_icp_attach(device_t, device_t, void *); 62 int ld_icp_detach(device_t, int); 63 int ld_icp_dobio(struct ld_icp_softc *, void *, int, int, int, 64 struct buf *); 65 int ld_icp_dump(struct ld_softc *, void *, int, int); 66 int ld_icp_flush(struct ld_softc *, int); 67 void ld_icp_intr(struct icp_ccb *); 68 int ld_icp_match(device_t, cfdata_t, void *); 69 int ld_icp_start(struct ld_softc *, struct buf *); 70 71 void ld_icp_adjqparam(device_t, int); 72 73 CFATTACH_DECL_NEW(ld_icp, sizeof(struct ld_icp_softc), 74 ld_icp_match, ld_icp_attach, ld_icp_detach, NULL); 75 76 static const struct icp_servicecb ld_icp_servicecb = { 77 ld_icp_adjqparam, 78 }; 79 80 int 81 ld_icp_match(device_t parent, cfdata_t match, void *aux) 82 { 83 struct icp_attach_args *icpa; 84 85 icpa = aux; 86 87 return (icpa->icpa_unit < ICPA_UNIT_SCSI); 88 } 89 90 void 91 ld_icp_attach(device_t parent, device_t self, void *aux) 92 { 93 struct icp_attach_args *icpa = aux; 94 struct ld_icp_softc *sc = device_private(self); 95 struct ld_softc *ld = &sc->sc_ld; 96 struct icp_softc *icp = device_private(parent); 97 struct icp_cachedrv *cd = &icp->icp_cdr[icpa->icpa_unit]; 98 struct icp_cdevinfo *cdi; 99 const char *str; 100 int t; 101 102 ld->sc_dv = self; 103 104 icp_register_servicecb(icp, icpa->icpa_unit, &ld_icp_servicecb); 105 106 sc->sc_hwunit = icpa->icpa_unit; 107 ld->sc_maxxfer = ICP_MAX_XFER; 108 ld->sc_secsize = ICP_SECTOR_SIZE; 109 ld->sc_start = ld_icp_start; 110 ld->sc_dump = ld_icp_dump; 111 ld->sc_flush = ld_icp_flush; 112 ld->sc_secperunit = cd->cd_size; 113 ld->sc_flags = LDF_ENABLED; 114 ld->sc_maxqueuecnt = icp->icp_openings; 115 116 if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, ICP_CACHE_DRV_INFO, 117 sc->sc_hwunit, sizeof(struct icp_cdevinfo))) { 118 aprint_error(": unable to retrieve device info\n"); 119 ld->sc_flags = LDF_ENABLED; 120 goto out; 121 } 122 cdi = (struct icp_cdevinfo *)icp->icp_scr; 123 124 aprint_normal(": <%.8s>, ", cdi->ld_name); 125 t = le32toh(cdi->ld_dtype) >> 16; 126 127 /* 128 * Print device type. 129 */ 130 if (le32toh(cdi->ld_dcnt) > 1 || le32toh(cdi->ld_slave) != -1) 131 str = "RAID-1"; 132 else if (t == 0) 133 str = "JBOD"; 134 else if (t == 1) 135 str = "RAID-0"; 136 else if (t == 2) 137 str = "Chain"; 138 else 139 str = "unknown type"; 140 141 aprint_normal("type: %s, ", str); 142 143 /* 144 * Print device status. 145 */ 146 if (t > 2) 147 str = "missing"; 148 else if ((cdi->ld_error & 1) != 0) { 149 str = "fault"; 150 ld->sc_flags = LDF_ENABLED; 151 } else if ((cdi->ld_error & 2) != 0) 152 str = "invalid"; 153 else { 154 str = "optimal"; 155 ld->sc_flags = LDF_ENABLED; 156 } 157 158 aprint_normal("status: %s\n", str); 159 160 out: 161 ldattach(ld); 162 } 163 164 int 165 ld_icp_detach(device_t dv, int flags) 166 { 167 int rv; 168 169 if ((rv = ldbegindetach((struct ld_softc *)dv, flags)) != 0) 170 return (rv); 171 ldenddetach((struct ld_softc *) dv); 172 173 return (0); 174 } 175 176 int 177 ld_icp_dobio(struct ld_icp_softc *sc, void *data, int datasize, int blkno, 178 int dowrite, struct buf *bp) 179 { 180 struct icp_cachecmd *cc; 181 struct icp_ccb *ic; 182 struct icp_softc *icp; 183 int s, rv; 184 185 icp = device_private(device_parent(sc->sc_ld.sc_dv)); 186 187 /* 188 * Allocate a command control block. 189 */ 190 if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL)) 191 return (EAGAIN); 192 193 /* 194 * Map the data transfer. 195 */ 196 cc = &ic->ic_cmd.cmd_packet.cc; 197 ic->ic_sg = cc->cc_sg; 198 ic->ic_service = ICP_CACHESERVICE; 199 200 rv = icp_ccb_map(icp, ic, data, datasize, 201 dowrite ? IC_XFER_OUT : IC_XFER_IN); 202 if (rv != 0) { 203 icp_ccb_free(icp, ic); 204 return (rv); 205 } 206 207 /* 208 * Build the command. 209 */ 210 ic->ic_cmd.cmd_opcode = htole16((dowrite ? ICP_WRITE : ICP_READ)); 211 cc->cc_deviceno = htole16(sc->sc_hwunit); 212 cc->cc_blockno = htole32(blkno); 213 cc->cc_blockcnt = htole32(datasize / ICP_SECTOR_SIZE); 214 cc->cc_addr = ~0; /* scatter gather */ 215 cc->cc_nsgent = htole32(ic->ic_nsgent); 216 217 ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd + 218 ic->ic_nsgent * sizeof(*ic->ic_sg); 219 220 /* 221 * Fire it off to the controller. 222 */ 223 if (bp == NULL) { 224 s = splbio(); 225 rv = icp_ccb_poll(icp, ic, 10000); 226 icp_ccb_unmap(icp, ic); 227 icp_ccb_free(icp, ic); 228 splx(s); 229 } else { 230 ic->ic_intr = ld_icp_intr; 231 ic->ic_context = bp; 232 ic->ic_dv = sc->sc_ld.sc_dv; 233 icp_ccb_enqueue(icp, ic); 234 } 235 236 return (rv); 237 } 238 239 int 240 ld_icp_start(struct ld_softc *ld, struct buf *bp) 241 { 242 243 return (ld_icp_dobio((struct ld_icp_softc *)ld, bp->b_data, 244 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 245 } 246 247 int 248 ld_icp_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 249 { 250 251 return (ld_icp_dobio((struct ld_icp_softc *)ld, data, 252 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 253 } 254 255 int 256 ld_icp_flush(struct ld_softc *ld, int flags) 257 { 258 struct ld_icp_softc *sc; 259 struct icp_softc *icp; 260 struct icp_cachecmd *cc; 261 struct icp_ccb *ic; 262 int rv; 263 264 sc = (struct ld_icp_softc *)ld; 265 icp = device_private(device_parent(ld->sc_dv)); 266 267 ic = icp_ccb_alloc_wait(icp); 268 ic->ic_cmd.cmd_opcode = htole16(ICP_FLUSH); 269 270 cc = &ic->ic_cmd.cmd_packet.cc; 271 cc->cc_deviceno = htole16(sc->sc_hwunit); 272 cc->cc_blockno = htole32(1); 273 cc->cc_blockcnt = 0; 274 cc->cc_addr = 0; 275 cc->cc_nsgent = 0; 276 277 ic->ic_cmdlen = (u_long)&cc->cc_sg - (u_long)&ic->ic_cmd; 278 ic->ic_service = ICP_CACHESERVICE; 279 280 rv = icp_ccb_wait(icp, ic, 30000); 281 icp_ccb_free(icp, ic); 282 283 return (rv); 284 } 285 286 void 287 ld_icp_intr(struct icp_ccb *ic) 288 { 289 struct buf *bp; 290 struct ld_icp_softc *sc; 291 struct icp_softc *icp; 292 293 bp = ic->ic_context; 294 sc = device_private(ic->ic_dv); 295 icp = device_private(device_parent(sc->sc_ld.sc_dv)); 296 297 if (ic->ic_status != ICP_S_OK) { 298 aprint_error_dev(ic->ic_dv, "request failed; status=0x%04x\n", 299 ic->ic_status); 300 bp->b_error = EIO; 301 bp->b_resid = bp->b_bcount; 302 303 icp->icp_evt.size = sizeof(icp->icp_evt.eu.sync); 304 icp->icp_evt.eu.sync.ionode = device_unit(icp->icp_dv); 305 icp->icp_evt.eu.sync.service = icp->icp_service; 306 icp->icp_evt.eu.sync.status = icp->icp_status; 307 icp->icp_evt.eu.sync.info = icp->icp_info; 308 icp->icp_evt.eu.sync.hostdrive = sc->sc_hwunit; 309 if (icp->icp_status >= 0x8000) 310 icp_store_event(icp, GDT_ES_SYNC, 0, &icp->icp_evt); 311 else 312 icp_store_event(icp, GDT_ES_SYNC, icp->icp_service, 313 &icp->icp_evt); 314 } else 315 bp->b_resid = 0; 316 317 icp_ccb_unmap(icp, ic); 318 icp_ccb_free(icp, ic); 319 lddone(&sc->sc_ld, bp); 320 } 321 322 void 323 ld_icp_adjqparam(device_t dv, int openings) 324 { 325 326 ldadjqparam((struct ld_softc *) dv, openings); 327 } 328