1 /* $NetBSD: ld_aac.c,v 1.5 2002/10/02 16:33:33 thorpej 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 1.5 2002/10/02 16:33:33 thorpej 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/endian.h> 50 #include <sys/dkio.h> 51 #include <sys/disk.h> 52 #if NRND > 0 53 #include <sys/rnd.h> 54 #endif 55 56 #include <machine/bus.h> 57 58 #include <uvm/uvm_extern.h> 59 60 #include <dev/ldvar.h> 61 62 #include <dev/ic/aacreg.h> 63 #include <dev/ic/aacvar.h> 64 65 struct ld_aac_softc { 66 struct ld_softc sc_ld; 67 int sc_hwunit; 68 }; 69 70 static void ld_aac_attach(struct device *, struct device *, void *); 71 static void ld_aac_intr(struct aac_ccb *); 72 static int ld_aac_dobio(struct ld_aac_softc *, void *, int, int, int, 73 struct buf *); 74 static int ld_aac_dump(struct ld_softc *, void *, int, int); 75 static int ld_aac_match(struct device *, struct cfdata *, void *); 76 static int ld_aac_start(struct ld_softc *, struct buf *); 77 78 CFATTACH_DECL(ld_aac, sizeof(struct ld_aac_softc), 79 ld_aac_match, ld_aac_attach, NULL, NULL); 80 81 static int 82 ld_aac_match(struct device *parent, struct cfdata *match, void *aux) 83 { 84 85 return (1); 86 } 87 88 static void 89 ld_aac_attach(struct device *parent, struct device *self, void *aux) 90 { 91 struct aac_attach_args *aaca; 92 struct aac_drive *hdr; 93 struct ld_aac_softc *sc; 94 struct ld_softc *ld; 95 struct aac_softc *aac; 96 97 aaca = aux; 98 aac = (struct aac_softc *)parent; 99 sc = (struct ld_aac_softc *)self; 100 ld = &sc->sc_ld; 101 hdr = &aac->sc_hdr[aaca->aaca_unit]; 102 103 sc->sc_hwunit = aaca->aaca_unit; 104 ld->sc_flags = LDF_ENABLED; 105 ld->sc_maxxfer = AAC_MAX_XFER; 106 ld->sc_secperunit = hdr->hd_size; 107 ld->sc_secsize = AAC_SECTOR_SIZE; 108 ld->sc_maxqueuecnt = (AAC_NCCBS - AAC_NCCBS_RESERVE) / aac->sc_nunits; 109 ld->sc_start = ld_aac_start; 110 ld->sc_dump = ld_aac_dump; 111 112 printf(": %s\n", 113 aac_describe_code(aac_container_types, hdr->hd_devtype)); 114 ldattach(ld); 115 } 116 117 static int 118 ld_aac_dobio(struct ld_aac_softc *sc, void *data, int datasize, int blkno, 119 int dowrite, struct buf *bp) 120 { 121 struct aac_blockread_response *brr; 122 struct aac_blockwrite_response *bwr; 123 struct aac_ccb *ac; 124 struct aac_softc *aac; 125 struct aac_blockread *br; 126 struct aac_blockwrite *bw; 127 struct aac_sg_entry *sge; 128 struct aac_sg_table *sgt; 129 struct aac_fib *fib; 130 bus_dmamap_t xfer; 131 u_int32_t status; 132 u_int16_t size; 133 int s, rv, i; 134 135 aac = (struct aac_softc *)sc->sc_ld.sc_dv.dv_parent; 136 137 /* 138 * Allocate a command control block and map the data transfer. 139 */ 140 ac = aac_ccb_alloc(aac, (dowrite ? AAC_CCB_DATA_OUT : AAC_CCB_DATA_IN)); 141 ac->ac_data = data; 142 ac->ac_datalen = datasize; 143 144 if ((rv = aac_ccb_map(aac, ac)) != 0) { 145 aac_ccb_free(aac, ac); 146 return (rv); 147 } 148 149 /* 150 * Build the command. 151 */ 152 fib = ac->ac_fib; 153 154 fib->Header.XferState = htole32(AAC_FIBSTATE_HOSTOWNED | 155 AAC_FIBSTATE_INITIALISED | AAC_FIBSTATE_FROMHOST | 156 AAC_FIBSTATE_REXPECTED | AAC_FIBSTATE_NORM); 157 fib->Header.Command = htole16(ContainerCommand); 158 159 if (dowrite) { 160 bw = (struct aac_blockwrite *)&fib->data[0]; 161 bw->Command = htole32(VM_CtBlockWrite); 162 bw->ContainerId = htole32(sc->sc_hwunit); 163 bw->BlockNumber = htole32(blkno); 164 bw->ByteCount = htole32(datasize); 165 bw->Stable = htole32(CUNSTABLE); /* XXX what's appropriate here? */ 166 167 size = sizeof(struct aac_blockwrite); 168 sgt = &bw->SgMap; 169 } else { 170 br = (struct aac_blockread *)&fib->data[0]; 171 br->Command = htole32(VM_CtBlockRead); 172 br->ContainerId = htole32(sc->sc_hwunit); 173 br->BlockNumber = htole32(blkno); 174 br->ByteCount = htole32(datasize); 175 176 size = sizeof(struct aac_blockread); 177 sgt = &br->SgMap; 178 } 179 180 xfer = ac->ac_dmamap_xfer; 181 sgt->SgCount = xfer->dm_nsegs; 182 sge = sgt->SgEntry; 183 184 for (i = 0; i < xfer->dm_nsegs; i++, sge++) { 185 sge->SgAddress = htole32(xfer->dm_segs[i].ds_addr); 186 sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len); 187 AAC_DPRINTF(AAC_D_IO, 188 ("#%d va %p pa %lx len %x\n", i, data, 189 (u_long)xfer->dm_segs[i].ds_addr, 190 xfer->dm_segs[i].ds_len)); 191 } 192 193 size += xfer->dm_nsegs * sizeof(struct aac_sg_entry); 194 size = htole16(sizeof(fib->Header) + size); 195 fib->Header.Size = htole16(size); 196 197 if (bp == NULL) { 198 /* 199 * Polled commands must not sit on the software queue. Wait 200 * up to 30 seconds for the command to complete. 201 */ 202 s = splbio(); 203 rv = aac_ccb_poll(aac, ac, 30000); 204 aac_ccb_unmap(aac, ac); 205 aac_ccb_free(aac, ac); 206 splx(s); 207 208 if (rv == 0) { 209 if (dowrite) { 210 bwr = (struct aac_blockwrite_response *) 211 &ac->ac_fib->data[0]; 212 status = le32toh(bwr->Status); 213 } else { 214 brr = (struct aac_blockread_response *) 215 &ac->ac_fib->data[0]; 216 status = le32toh(brr->Status); 217 } 218 219 if (status != ST_OK) { 220 printf("%s: I/O error: %s\n", 221 sc->sc_ld.sc_dv.dv_xname, 222 aac_describe_code(aac_command_status_table, 223 status)); 224 rv = EIO; 225 } 226 } 227 } else { 228 ac->ac_device = (struct device *)sc; 229 ac->ac_context = bp; 230 ac->ac_intr = ld_aac_intr; 231 aac_ccb_enqueue(aac, ac); 232 rv = 0; 233 } 234 235 return (rv); 236 } 237 238 static int 239 ld_aac_start(struct ld_softc *ld, struct buf *bp) 240 { 241 242 return (ld_aac_dobio((struct ld_aac_softc *)ld, bp->b_data, 243 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); 244 } 245 246 static void 247 ld_aac_intr(struct aac_ccb *ac) 248 { 249 struct aac_blockread_response *brr; 250 struct aac_blockwrite_response *bwr; 251 struct ld_aac_softc *sc; 252 struct aac_softc *aac; 253 struct buf *bp; 254 u_int32_t status; 255 256 bp = ac->ac_context; 257 sc = (struct ld_aac_softc *)ac->ac_device; 258 aac = (struct aac_softc *)sc->sc_ld.sc_dv.dv_parent; 259 260 if ((bp->b_flags & B_READ) != 0) { 261 brr = (struct aac_blockread_response *)&ac->ac_fib->data[0]; 262 status = le32toh(brr->Status); 263 } else { 264 bwr = (struct aac_blockwrite_response *)&ac->ac_fib->data[0]; 265 status = le32toh(bwr->Status); 266 } 267 268 aac_ccb_unmap(aac, ac); 269 aac_ccb_free(aac, ac); 270 271 if (status != ST_OK) { 272 bp->b_flags |= B_ERROR; 273 bp->b_error = EIO; 274 bp->b_resid = bp->b_bcount; 275 276 printf("%s: I/O error: %s\n", sc->sc_ld.sc_dv.dv_xname, 277 aac_describe_code(aac_command_status_table, status)); 278 } else 279 bp->b_resid = 0; 280 281 lddone(&sc->sc_ld, bp); 282 } 283 284 static int 285 ld_aac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) 286 { 287 288 return (ld_aac_dobio((struct ld_aac_softc *)ld, data, 289 blkcnt * ld->sc_secsize, blkno, 1, NULL)); 290 } 291