| 1 | /* $NetBSD: ld_amr.c,v 1.25 2016/09/27 03:33:32 pgoyette 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 1.25 2016/09/27 03:33:32 pgoyette 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 *, int, 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, int blkno, int blkcnt) |
| 199 | { |
| 200 | struct ld_amr_softc *sc; |
| 201 | |
| 202 | sc = (struct ld_amr_softc *)ld; |
| 203 | |
| 204 | return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, |
| 205 | NULL)); |
| 206 | } |
| 207 | |
| 208 | MODULE(MODULE_CLASS_DRIVER, ld_amr, "ld,amr" ); |
| 209 | |
| 210 | #ifdef _MODULE |
| 211 | /* |
| 212 | * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" |
| 213 | * XXX it will be defined in the common-code module |
| 214 | */ |
| 215 | #undef CFDRIVER_DECL |
| 216 | #define CFDRIVER_DECL(name, class, attr) |
| 217 | #include "ioconf.c" |
| 218 | #endif |
| 219 | |
| 220 | static int |
| 221 | ld_amr_modcmd(modcmd_t cmd, void *opaque) |
| 222 | { |
| 223 | #ifdef _MODULE |
| 224 | /* |
| 225 | * We ignore the cfdriver_vec[] that ioconf provides, since |
| 226 | * the cfdrivers are attached already. |
| 227 | */ |
| 228 | static struct cfdriver * const no_cfdriver_vec[] = { NULL }; |
| 229 | #endif |
| 230 | int error = 0; |
| 231 | |
| 232 | #ifdef _MODULE |
| 233 | switch (cmd) { |
| 234 | case MODULE_CMD_INIT: |
| 235 | error = config_init_component(no_cfdriver_vec, |
| 236 | cfattach_ioconf_ld_amr, cfdata_ioconf_ld_amr); |
| 237 | break; |
| 238 | case MODULE_CMD_FINI: |
| 239 | error = config_fini_component(no_cfdriver_vec, |
| 240 | cfattach_ioconf_ld_amr, cfdata_ioconf_ld_amr); |
| 241 | break; |
| 242 | default: |
| 243 | error = ENOTTY; |
| 244 | break; |
| 245 | } |
| 246 | #endif |
| 247 | |
| 248 | return error; |
| 249 | } |
| 250 | |