1 /* $NetBSD: ld_amr.c,v 1.26 2025/04/13 02:34:03 rin Exp $ */ 2 3 /*- 4 * Copyright (c) 2002, 2003 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 * AMI RAID controller front-end for ld(4) driver. 34 */ 35 36 #include <sys/cdefs.h> 37 __KERNEL_RCSID(0, "$NetBSD: ld_amr.c,v 1.26 2025/04/13 02:34:03 rin 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 50 #include <sys/bus.h> 51 52 #include <dev/ldvar.h> 53 54 #include <dev/pci/pcireg.h> 55 #include <dev/pci/pcivar.h> 56 #include <dev/pci/amrreg.h> 57 #include <dev/pci/amrvar.h> 58 59 #include "ioconf.h" 60 61 struct ld_amr_softc { 62 struct ld_softc sc_ld; 63 int sc_hwunit; 64 }; 65 66 static int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, 67 struct buf *); 68 static int ld_amr_dump(struct ld_softc *, void *, daddr_t, int); 69 static void ld_amr_handler(struct amr_ccb *); 70 static int ld_amr_start(struct ld_softc *, struct buf *); 71 72 static int 73 ld_amr_match(device_t parent, cfdata_t match, void *aux) 74 { 75 return (1); 76 } 77 78 static void 79 ld_amr_attach(device_t parent, device_t self, void *aux) 80 { 81 struct amr_attach_args *amra = aux; 82 struct ld_amr_softc *sc = device_private(self); 83 struct ld_softc *ld = &sc->sc_ld; 84 struct amr_softc *amr = device_private(parent); 85 const char *statestr; 86 int happy; 87 88 ld->sc_dv = self; 89 90 sc->sc_hwunit = amra->amra_unit; 91 ld->sc_maxxfer = amr_max_xfer; 92 ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV) 93 / amr->amr_numdrives; 94 ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; 95 ld->sc_secsize = AMR_SECTOR_SIZE; 96 ld->sc_start = ld_amr_start; 97 ld->sc_dump = ld_amr_dump; 98 99 if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) 100 ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; 101 102 /* 103 * Print status information and attach to the ld driver proper. 104 */ 105 statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state, 106 &happy); 107 if (happy) 108 ld->sc_flags = LDF_ENABLED; 109 aprint_normal(": RAID %d, %s\n", 110 amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, 111 statestr); 112 113 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); 114 } 115 116 CFATTACH_DECL_NEW(ld_amr, sizeof(struct ld_amr_softc), 117 ld_amr_match, ld_amr_attach, NULL, NULL); 118 119 static int 120 ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, 121 int blkno, int dowrite, struct buf *bp) 122 { 123 struct amr_ccb *ac; 124 struct amr_softc *amr; 125 struct amr_mailbox_cmd *mb; 126 int rv; 127 128 amr = device_private(device_parent(sc->sc_ld.sc_dv)); 129 130 if ((rv = amr_ccb_alloc(amr, &ac)) != 0) 131 return (rv); 132 133 mb = &ac->ac_cmd; 134 mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); 135 mb->mb_drive = sc->sc_hwunit; 136 mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); 137 mb->mb_lba = htole32(blkno); 138 139 rv = amr_ccb_map(amr, ac, data, datasize, 140 (dowrite ? AC_XFER_OUT : AC_XFER_IN)); 141 if (rv != 0) { 142 amr_ccb_free(amr, ac); 143 return (rv); 144 } 145 146 if (bp == NULL) { 147 /* 148 * Polled commands must not sit on the software queue. Wait 149 * up to 30 seconds for the command to complete. 150 */ 151 rv = amr_ccb_poll(amr, ac, 30000); 152 amr_ccb_unmap(amr, ac); 153 amr_ccb_free(amr, ac); 154 } else { 155 ac->ac_handler = ld_amr_handler; 156 ac->ac_context = bp; 157 ac->ac_dv = sc->sc_ld.sc_dv; 158 amr_ccb_enqueue(amr, ac); 159 rv = 0; 160 } 161 162 return (rv); 163 } 164 165 static int 166 ld_amr_start(struct ld_softc *ld, struct buf *bp) 167 { 168 return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, 169 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 170 } 171 172 static void 173 ld_amr_handler(struct amr_ccb *ac) 174 { 175 struct buf *bp; 176 struct ld_amr_softc *sc; 177 struct amr_softc *amr; 178 179 bp = ac->ac_context; 180 sc = device_private(ac->ac_dv); 181 amr = device_private(device_parent(sc->sc_ld.sc_dv)); 182 183 if (ac->ac_status != AMR_STATUS_SUCCESS) { 184 printf("%s: cmd status 0x%02x\n", device_xname(sc->sc_ld.sc_dv), 185 ac->ac_status); 186 187 bp->b_error = EIO; 188 bp->b_resid = bp->b_bcount; 189 } else 190 bp->b_resid = 0; 191 192 amr_ccb_unmap(amr, ac); 193 amr_ccb_free(amr, ac); 194 lddone(&sc->sc_ld, bp); 195 } 196 197 static int 198 ld_amr_dump(struct ld_softc *ld, void *data, daddr_t blkno, int blkcnt) 199 { 200 struct ld_amr_softc *sc; 201 202 /* ld_amr_dobio() takes only an 'int' as a disk address */ 203 if (blkno + blkcnt - 1 > INT_MAX) 204 return (EIO); 205 206 sc = (struct ld_amr_softc *)ld; 207 208 return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, 209 NULL)); 210 } 211 212 MODULE(MODULE_CLASS_DRIVER, ld_amr, "ld,amr"); 213 214 #ifdef _MODULE 215 /* 216 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" 217 * XXX it will be defined in the common-code module 218 */ 219 #undef CFDRIVER_DECL 220 #define CFDRIVER_DECL(name, class, attr) 221 #include "ioconf.c" 222 #endif 223 224 static int 225 ld_amr_modcmd(modcmd_t cmd, void *opaque) 226 { 227 #ifdef _MODULE 228 /* 229 * We ignore the cfdriver_vec[] that ioconf provides, since 230 * the cfdrivers are attached already. 231 */ 232 static struct cfdriver * const no_cfdriver_vec[] = { NULL }; 233 #endif 234 int error = 0; 235 236 #ifdef _MODULE 237 switch (cmd) { 238 case MODULE_CMD_INIT: 239 error = config_init_component(no_cfdriver_vec, 240 cfattach_ioconf_ld_amr, cfdata_ioconf_ld_amr); 241 break; 242 case MODULE_CMD_FINI: 243 error = config_fini_component(no_cfdriver_vec, 244 cfattach_ioconf_ld_amr, cfdata_ioconf_ld_amr); 245 break; 246 default: 247 error = ENOTTY; 248 break; 249 } 250 #endif 251 252 return error; 253 } 254
Indexes created Sat Sep 20 22:09:52 GMT 2025