ld_aac.c revision 1.13
1 /* $NetBSD: ld_aac.c,v 1.13 2006/11/16 01:32:51 christos 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 * 3. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the NetBSD 21 * Foundation, Inc. and its contributors. 22 * 4. Neither the name of The NetBSD Foundation nor the names of its 23 * contributors may be used to endorse or promote products derived 24 * from this software without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 * POSSIBILITY OF SUCH DAMAGE. 37 */ 38 39 #include <sys/cdefs.h> 40 __KERNEL_RCSID(0, "$NetBSD: ld_aac.c,v 1.13 2006/11/16 01:32:51 christos Exp $"); 41 42 #include "rnd.h" 43 44 #include <sys/param.h> 45 #include <sys/systm.h> 46 #include <sys/kernel.h> 47 #include <sys/device.h> 48 #include <sys/buf.h> 49 #include <sys/bufq.h> 50 #include <sys/endian.h> 51 #include <sys/dkio.h> 52 #include <sys/disk.h> 53 #if NRND > 0 54 #include <sys/rnd.h> 55 #endif 56 57 #include <machine/bus.h> 58 59 #include <uvm/uvm_extern.h> 60 61 #include <dev/ldvar.h> 62 63 #include <dev/ic/aacreg.h> 64 #include <dev/ic/aacvar.h> 65 66 struct ld_aac_softc { 67 struct ld_softc sc_ld; 68 int sc_hwunit; 69 }; 70 71 static void ld_aac_attach(struct device *, struct device *, void *); 72 static void ld_aac_intr(struct aac_ccb *); 73 static int ld_aac_dobio(struct ld_aac_softc *, void *, int, int, int, 74 struct buf *); 75 static int ld_aac_dump(struct ld_softc *, void *, int, int); 76 static int ld_aac_match(struct device *, struct cfdata *, void *); 77 static int ld_aac_start(struct ld_softc *, struct buf *); 78 79 CFATTACH_DECL(ld_aac, sizeof(struct ld_aac_softc), 80 ld_aac_match, ld_aac_attach, NULL, NULL); 81 82 static int 83 ld_aac_match(struct device *parent, struct cfdata *match, 84 void *aux) 85 { 86 87 return (1); 88 } 89 90 static void 91 ld_aac_attach(struct device *parent, struct device *self, void *aux) 92 { 93 struct aac_attach_args *aaca; 94 struct aac_drive *hdr; 95 struct ld_aac_softc *sc; 96 struct ld_softc *ld; 97 struct aac_softc *aac; 98 99 aaca = aux; 100 aac = (struct aac_softc *)parent; 101 sc = (struct ld_aac_softc *)self; 102 ld = &sc->sc_ld; 103 hdr = &aac->sc_hdr[aaca->aaca_unit]; 104 105 sc->sc_hwunit = aaca->aaca_unit; 106 ld->sc_flags = LDF_ENABLED; 107 ld->sc_maxxfer = AAC_MAX_XFER; 108 ld->sc_secperunit = hdr->hd_size; 109 ld->sc_secsize = AAC_SECTOR_SIZE; 110 ld->sc_maxqueuecnt = (AAC_NCCBS - AAC_NCCBS_RESERVE) / aac->sc_nunits; 111 ld->sc_start = ld_aac_start; 112 ld->sc_dump = ld_aac_dump; 113 114 aprint_normal(": %s\n", 115 aac_describe_code(aac_container_types, hdr->hd_devtype)); 116 ldattach(ld); 117 } 118 119 static int 120 ld_aac_dobio(struct ld_aac_softc *sc, void *data, int datasize, int blkno, 121 int dowrite, struct buf *bp) 122 { 123 struct aac_blockread_response *brr; 124 struct aac_blockwrite_response *bwr; 125 struct aac_ccb *ac; 126 struct aac_softc *aac; 127 struct aac_blockread *br; 128 struct aac_blockwrite *bw; 129 struct aac_sg_entry *sge; 130 struct aac_sg_table *sgt; 131 struct aac_fib *fib; 132 bus_dmamap_t xfer; 133 u_int32_t status; 134 u_int16_t size; 135 int s, rv, i; 136 137 aac = (struct aac_softc *)device_parent(&sc->sc_ld.sc_dv); 138 139 /* 140 * Allocate a command control block and map the data transfer. 141 */ 142 ac = aac_ccb_alloc(aac, (dowrite ? AAC_CCB_DATA_OUT : AAC_CCB_DATA_IN)); 143 ac->ac_data = data; 144 ac->ac_datalen = datasize; 145 146 if ((rv = aac_ccb_map(aac, ac)) != 0) { 147 aac_ccb_free(aac, ac); 148 return (rv); 149 } 150 151 /* 152 * Build the command. 153 */ 154 fib = ac->ac_fib; 155 156 fib->Header.XferState = htole32(AAC_FIBSTATE_HOSTOWNED | 157 AAC_FIBSTATE_INITIALISED | AAC_FIBSTATE_FROMHOST | 158 AAC_FIBSTATE_REXPECTED | AAC_FIBSTATE_NORM); 159 fib->Header.Command = htole16(ContainerCommand); 160 161 if (dowrite) { 162 bw = (struct aac_blockwrite *)&fib->data[0]; 163 bw->Command = htole32(VM_CtBlockWrite); 164 bw->ContainerId = htole32(sc->sc_hwunit); 165 bw->BlockNumber = htole32(blkno); 166 bw->ByteCount = htole32(datasize); 167 bw->Stable = htole32(CUNSTABLE); /* XXX what's appropriate here? */ 168 169 size = sizeof(struct aac_blockwrite); 170 sgt = &bw->SgMap; 171 } else { 172 br = (struct aac_blockread *)&fib->data[0]; 173 br->Command = htole32(VM_CtBlockRead); 174 br->ContainerId = htole32(sc->sc_hwunit); 175 br->BlockNumber = htole32(blkno); 176 br->ByteCount = htole32(datasize); 177 178 size = sizeof(struct aac_blockread); 179 sgt = &br->SgMap; 180 } 181 182 xfer = ac->ac_dmamap_xfer; 183 sgt->SgCount = xfer->dm_nsegs; 184 sge = sgt->SgEntry; 185 186 for (i = 0; i < xfer->dm_nsegs; i++, sge++) { 187 sge->SgAddress = htole32(xfer->dm_segs[i].ds_addr); 188 sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len); 189 AAC_DPRINTF(AAC_D_IO, 190 ("#%d va %p pa %lx len %lx\n", i, data, 191 (u_long)xfer->dm_segs[i].ds_addr, 192 (u_long)xfer->dm_segs[i].ds_len)); 193 } 194 195 size += xfer->dm_nsegs * sizeof(struct aac_sg_entry); 196 size = htole16(sizeof(fib->Header) + size); 197 fib->Header.Size = htole16(size); 198 199 if (bp == NULL) { 200 /* 201 * Polled commands must not sit on the software queue. Wait 202 * up to 30 seconds for the command to complete. 203 */ 204 s = splbio(); 205 rv = aac_ccb_poll(aac, ac, 30000); 206 aac_ccb_unmap(aac, ac); 207 aac_ccb_free(aac, ac); 208 splx(s); 209 210 if (rv == 0) { 211 if (dowrite) { 212 bwr = (struct aac_blockwrite_response *) 213 &ac->ac_fib->data[0]; 214 status = le32toh(bwr->Status); 215 } else { 216 brr = (struct aac_blockread_response *) 217 &ac->ac_fib->data[0]; 218 status = le32toh(brr->Status); 219 } 220 221 if (status != ST_OK) { 222 printf("%s: I/O error: %s\n", 223 sc->sc_ld.sc_dv.dv_xname, 224 aac_describe_code(aac_command_status_table, 225 status)); 226 rv = EIO; 227 } 228 } 229 } else { 230 ac->ac_device = (struct device *)sc; 231 ac->ac_context = bp; 232 ac->ac_intr = ld_aac_intr; 233 aac_ccb_enqueue(aac, ac); 234 rv = 0; 235 } 236 237 return (rv); 238 } 239 240 static int 241 ld_aac_start(struct ld_softc *ld, struct buf *bp) 242 { 243 244 return (ld_aac_dobio((struct ld_aac_softc *)ld, bp->b_data, 245 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 246 } 247 248 static void 249 ld_aac_intr(struct aac_ccb *ac) 250 { 251 struct aac_blockread_response *brr; 252 struct aac_blockwrite_response *bwr; 253 struct ld_aac_softc *sc; 254 struct aac_softc *aac; 255 struct buf *bp; 256 u_int32_t status; 257 258 bp = ac->ac_context; 259 sc = (struct ld_aac_softc *)ac->ac_device; 260 aac = (struct aac_softc *)device_parent(&sc->sc_ld.sc_dv); 261 262 if ((bp->b_flags & B_READ) != 0) { 263 brr = (struct aac_blockread_response *)&ac->ac_fib->data[0]; 264 status = le32toh(brr->Status); 265 } else { 266 bwr = (struct aac_blockwrite_response *)&ac->ac_fib->data[0]; 267 status = le32toh(bwr->Status); 268 } 269 270 aac_ccb_unmap(aac, ac); 271 aac_ccb_free(aac, ac); 272 273 if (status != ST_OK) { 274 bp->b_flags |= B_ERROR; 275 bp->b_error = EIO; 276 bp->b_resid = bp->b_bcount; 277 278 printf("%s: I/O error: %s\n", sc->sc_ld.sc_dv.dv_xname, 279 aac_describe_code(aac_command_status_table, status)); 280 } else 281 bp->b_resid = 0; 282 283 lddone(&sc->sc_ld, bp); 284 } 285 286 static int 287 ld_aac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 288 { 289 290 return (ld_aac_dobio((struct ld_aac_softc *)ld, data, 291 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 292 } 293
Indexes created Sat Sep 27 14:09:57 GMT 2025