FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ld_aac.c
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 }
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