1/* $NetBSD: ld_icp.c,v 1.32 2020/08/14 09:28:29 chs 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 1.32 2020/08/14 09:28:29 chs 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#include <sys/module.h> 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#include "ioconf.h" 57 58struct ld_icp_softc { 59 struct ld_softc sc_ld; 60 int sc_hwunit; 61}; 62 63static void ld_icp_attach(device_t, device_t, void *); 64static int ld_icp_detach(device_t, int); 65static int ld_icp_dobio(struct ld_icp_softc *, void *, int, int, int, 66 struct buf *); 67static int ld_icp_dump(struct ld_softc *, void *, int, int); 68static int ld_icp_flush(struct ld_softc *, bool); 69static int ld_icp_ioctl(struct ld_softc *, u_long, void *, int32_t, bool); 70static void ld_icp_intr(struct icp_ccb *); 71static int ld_icp_match(device_t, cfdata_t, void *); 72static int ld_icp_start(struct ld_softc *, struct buf *); 73 74static void ld_icp_adjqparam(device_t, int); 75 76CFATTACH_DECL_NEW(ld_icp, sizeof(struct ld_icp_softc), 77 ld_icp_match, ld_icp_attach, ld_icp_detach, NULL); 78 79static const struct icp_servicecb ld_icp_servicecb = { 80 ld_icp_adjqparam, 81}; 82 83static int 84ld_icp_match(device_t parent, cfdata_t match, void *aux) 85{ 86 struct icp_attach_args *icpa; 87 88 icpa = aux; 89 90 return (icpa->icpa_unit < ICPA_UNIT_SCSI); 91} 92 93static void 94ld_icp_attach(device_t parent, device_t self, void *aux) 95{ 96 struct icp_attach_args *icpa = aux; 97 struct ld_icp_softc *sc = device_private(self); 98 struct ld_softc *ld = &sc->sc_ld; 99 struct icp_softc *icp = device_private(parent); 100 struct icp_cachedrv *cd = &icp->icp_cdr[icpa->icpa_unit]; 101 struct icp_cdevinfo *cdi; 102 const char *str; 103 int t; 104 105 ld->sc_dv = self; 106 107 icp_register_servicecb(icp, icpa->icpa_unit, &ld_icp_servicecb); 108 109 sc->sc_hwunit = icpa->icpa_unit; 110 ld->sc_maxxfer = ICP_MAX_XFER; 111 ld->sc_secsize = ICP_SECTOR_SIZE; 112 ld->sc_start = ld_icp_start; 113 ld->sc_dump = ld_icp_dump; 114 ld->sc_ioctl = ld_icp_ioctl; 115 ld->sc_secperunit = cd->cd_size; 116 ld->sc_flags = LDF_ENABLED; 117 ld->sc_maxqueuecnt = icp->icp_openings; 118 119 if (!icp_cmd(icp, ICP_CACHESERVICE, ICP_IOCTL, ICP_CACHE_DRV_INFO, 120 sc->sc_hwunit, sizeof(struct icp_cdevinfo))) { 121 aprint_error(": unable to retrieve device info\n"); 122 ld->sc_flags = LDF_ENABLED; 123 goto out; 124 } 125 cdi = (struct icp_cdevinfo *)icp->icp_scr; 126 127 aprint_normal(": <%.8s>, ", cdi->ld_name); 128 t = le32toh(cdi->ld_dtype) >> 16; 129 130 /* 131 * Print device type. 132 */ 133 if (le32toh(cdi->ld_dcnt) > 1 || le32toh(cdi->ld_slave) != -1) 134 str = "RAID-1"; 135 else if (t == 0) 136 str = "JBOD"; 137 else if (t == 1) 138 str = "RAID-0"; 139 else if (t == 2) 140 str = "Chain"; 141 else 142 str = "unknown type"; 143 144 aprint_normal("type: %s, ", str); 145 146 /* 147 * Print device status. 148 */ 149 if (t > 2) 150 str = "missing"; 151 else if ((cdi->ld_error & 1) != 0) { 152 str = "fault"; 153 ld->sc_flags = LDF_ENABLED; 154 } else if ((cdi->ld_error & 2) != 0) 155 str = "invalid"; 156 else { 157 str = "optimal"; 158 ld->sc_flags = LDF_ENABLED; 159 } 160 161 aprint_normal("status: %s\n", str); 162 163 out: 164 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); 165} 166 167static int 168ld_icp_detach(device_t dv, int flags) 169{ 170 struct ld_softc *ldsc = device_private(dv); 171 int rv; 172 173 if ((rv = ldbegindetach(ldsc, flags)) != 0) 174 return (rv); 175 ldenddetach(ldsc); 176 177 return (0); 178} 179 180static int 181ld_icp_dobio(struct ld_icp_softc *sc, void *data, int datasize, int blkno, 182 int dowrite, struct buf *bp) 183{ 184 struct icp_cachecmd *cc; 185 struct icp_ccb *ic; 186 struct icp_softc *icp; 187 int s, rv; 188 189 icp = device_private(device_parent(sc->sc_ld.sc_dv)); 190 191 /* 192 * Allocate a command control block. 193 */ 194 if (__predict_false((ic = icp_ccb_alloc(icp)) == NULL)) 195 return (EAGAIN); 196 197 /* 198 * Map the data transfer. 199 */ 200 cc = &ic->ic_cmd.cmd_packet.cc; 201 ic->ic_sg = cc->cc_sg; 202 ic->ic_service = ICP_CACHESERVICE; 203 204 rv = icp_ccb_map(icp, ic, data, datasize, 205 dowrite ? IC_XFER_OUT : IC_XFER_IN); 206 if (rv != 0) { 207 icp_ccb_free(icp, ic); 208 return (rv); 209 } 210 211 /* 212 * Build the command. 213 */ 214 ic->ic_cmd.cmd_opcode = htole16((dowrite ? ICP_WRITE : ICP_READ)); 215 cc->cc_deviceno = htole16(sc->sc_hwunit); 216 cc->cc_blockno = htole32(blkno); 217 cc->cc_blockcnt = htole32(datasize / ICP_SECTOR_SIZE); 218 cc->cc_addr = ~0; /* scatter gather */ 219 cc->cc_nsgent = htole32(ic->ic_nsgent); 220 221 ic->ic_cmdlen = (u_long)ic->ic_sg - (u_long)&ic->ic_cmd + 222 ic->ic_nsgent * sizeof(*ic->ic_sg); 223 224 /* 225 * Fire it off to the controller. 226 */ 227 if (bp == NULL) { 228 s = splbio(); 229 rv = icp_ccb_poll(icp, ic, 10000); 230 icp_ccb_unmap(icp, ic); 231 icp_ccb_free(icp, ic); 232 splx(s); 233 } else { 234 ic->ic_intr = ld_icp_intr; 235 ic->ic_context = bp; 236 ic->ic_dv = sc->sc_ld.sc_dv; 237 icp_ccb_enqueue(icp, ic); 238 } 239 240 return (rv); 241} 242 243static int 244ld_icp_start(struct ld_softc *ld, struct buf *bp) 245{ 246 247 return (ld_icp_dobio((struct ld_icp_softc *)ld, bp->b_data, 248 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 249} 250 251static int 252ld_icp_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 253{ 254 255 return (ld_icp_dobio((struct ld_icp_softc *)ld, data, 256 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 257} 258 259/* ARGSUSED */ 260static int 261ld_icp_flush(struct ld_softc *ld, bool poll) 262{ 263 struct ld_icp_softc *sc; 264 struct icp_softc *icp; 265 struct icp_cachecmd *cc; 266 struct icp_ccb *ic; 267 int rv; 268 269 sc = (struct ld_icp_softc *)ld; 270 icp = device_private(device_parent(ld->sc_dv)); 271 272 ic = icp_ccb_alloc_wait(icp); 273 ic->ic_cmd.cmd_opcode = htole16(ICP_FLUSH); 274 275 cc = &ic->ic_cmd.cmd_packet.cc; 276 cc->cc_deviceno = htole16(sc->sc_hwunit); 277 cc->cc_blockno = htole32(1); 278 cc->cc_blockcnt = 0; 279 cc->cc_addr = 0; 280 cc->cc_nsgent = 0; 281 282 ic->ic_cmdlen = (u_long)&cc->cc_sg - (u_long)&ic->ic_cmd; 283 ic->ic_service = ICP_CACHESERVICE; 284 285 rv = icp_ccb_wait(icp, ic, 30000); 286 icp_ccb_free(icp, ic); 287 288 return (rv); 289} 290 291static int 292ld_icp_ioctl(struct ld_softc *ld, u_long cmd, void *addr, int32_t flag, bool poll) 293{ 294 int error; 295 296 switch (cmd) { 297 case DIOCCACHESYNC: 298 error = ld_icp_flush(ld, poll); 299 break; 300 301 default: 302 error = EPASSTHROUGH; 303 break; 304 } 305 306 return error; 307} 308 309static void 310ld_icp_intr(struct icp_ccb *ic) 311{ 312 struct buf *bp; 313 struct ld_icp_softc *sc; 314 struct icp_softc *icp; 315 316 bp = ic->ic_context; 317 sc = device_private(ic->ic_dv); 318 icp = device_private(device_parent(sc->sc_ld.sc_dv)); 319 320 if (ic->ic_status != ICP_S_OK) { 321 aprint_error_dev(ic->ic_dv, "request failed; status=0x%04x\n", 322 ic->ic_status); 323 bp->b_error = EIO; 324 bp->b_resid = bp->b_bcount; 325 326 icp->icp_evt.size = sizeof(icp->icp_evt.eu.sync); 327 icp->icp_evt.eu.sync.ionode = device_unit(icp->icp_dv); 328 icp->icp_evt.eu.sync.service = icp->icp_service; 329 icp->icp_evt.eu.sync.status = icp->icp_status; 330 icp->icp_evt.eu.sync.info = icp->icp_info; 331 icp->icp_evt.eu.sync.hostdrive = sc->sc_hwunit; 332 if (icp->icp_status >= 0x8000) 333 icp_store_event(icp, GDT_ES_SYNC, 0, &icp->icp_evt); 334 else 335 icp_store_event(icp, GDT_ES_SYNC, icp->icp_service, 336 &icp->icp_evt); 337 } else 338 bp->b_resid = 0; 339 340 icp_ccb_unmap(icp, ic); 341 icp_ccb_free(icp, ic); 342 lddone(&sc->sc_ld, bp); 343} 344 345static void 346ld_icp_adjqparam(device_t dv, int openings) 347{ 348 349 ldadjqparam(device_private(dv), openings); 350} 351 352MODULE(MODULE_CLASS_DRIVER, ld_icp, "ld"); /* no icp module yet */ 353 354#ifdef _MODULE 355/* 356 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" 357 * XXX it will be defined in the common-code module 358 */ 359#undef CFDRIVER_DECL 360#define CFDRIVER_DECL(name, class, attr) 361#include "ioconf.c" 362#endif 363 364static int 365ld_icp_modcmd(modcmd_t cmd, void *opaque) 366{ 367#ifdef _MODULE 368 /* 369 * We ignore the cfdriver_vec[] that ioconf provides, since 370 * the cfdrivers are attached already. 371 */ 372 static struct cfdriver * const no_cfdriver_vec[] = { NULL }; 373#endif 374 int error = 0; 375 376#ifdef _MODULE 377 switch (cmd) { 378 case MODULE_CMD_INIT: 379 error = config_init_component(no_cfdriver_vec, 380 cfattach_ioconf_ld_icp, cfdata_ioconf_ld_icp); 381 break; 382 case MODULE_CMD_FINI: 383 error = config_fini_component(no_cfdriver_vec, 384 cfattach_ioconf_ld_icp, cfdata_ioconf_ld_icp); 385 break; 386 default: 387 error = ENOTTY; 388 break; 389 } 390#endif 391 392 return error; 393} 394