FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/ld_aac.c
1 /* $NetBSD: ld_aac.c,v 1.13.2.2 2008/10/03 09:12:16 jdc 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 1.13.2.2 2008/10/03 09:12:16 jdc 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, daddr_t, 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(aac);
108 ld->sc_secperunit = hdr->hd_size;
109 ld->sc_secsize = AAC_SECTOR_SIZE;
110 ld->sc_maxqueuecnt = (aac->sc_max_fibs - 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, daddr_t 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_fib *fib;
128 bus_dmamap_t xfer;
129 u_int32_t status;
130 u_int16_t size;
131 int s, rv, i;
132
133 aac = (struct aac_softc *)device_parent(&sc->sc_ld.sc_dv);
134
135 /*
136 * Allocate a command control block and map the data transfer.
137 */
138 ac = aac_ccb_alloc(aac, (dowrite ? AAC_CCB_DATA_OUT : AAC_CCB_DATA_IN));
139 if (ac == NULL)
140 return EBUSY;
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 AAC_FIBSTATE_ASYNC | AAC_FIBSTATE_FAST_RESPONSE );
158
159 if (aac->sc_quirks & AAC_QUIRK_RAW_IO) {
160 struct aac_raw_io *raw;
161 struct aac_sg_entryraw *sge;
162 struct aac_sg_tableraw *sgt;
163
164 raw = (struct aac_raw_io *)&fib->data[0];
165 fib->Header.Command = htole16(RawIo);
166 raw->BlockNumber = htole64(blkno);
167 raw->ByteCount = htole32(datasize);
168 raw->ContainerId = htole16(sc->sc_hwunit);
169 raw->BpTotal = 0;
170 raw->BpComplete = 0;
171 size = sizeof(struct aac_raw_io);
172 sgt = &raw->SgMapRaw;
173 raw->Flags = (dowrite ? 0 : 1);
174
175 xfer = ac->ac_dmamap_xfer;
176 sgt->SgCount = xfer->dm_nsegs;
177 sge = sgt->SgEntryRaw;
178
179 for (i = 0; i < xfer->dm_nsegs; i++, sge++) {
180 sge->SgAddress = htole64(xfer->dm_segs[i].ds_addr);
181 sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len);
182 sge->Next = 0;
183 sge->Prev = 0;
184 sge->Flags = 0;
185 }
186 size += xfer->dm_nsegs * sizeof(struct aac_sg_entryraw);
187 size = sizeof(fib->Header) + size;
188 fib->Header.Size = htole16(size);
189 } else if ((aac->sc_quirks & AAC_QUIRK_SG_64BIT) == 0) {
190 struct aac_blockread *br;
191 struct aac_blockwrite *bw;
192 struct aac_sg_entry *sge;
193 struct aac_sg_table *sgt;
194
195 fib->Header.Command = htole16(ContainerCommand);
196 if (dowrite) {
197 bw = (struct aac_blockwrite *)&fib->data[0];
198 bw->Command = htole32(VM_CtBlockWrite);
199 bw->ContainerId = htole32(sc->sc_hwunit);
200 bw->BlockNumber = htole32(blkno);
201 bw->ByteCount = htole32(datasize);
202 bw->Stable = htole32(CUNSTABLE);
203 /* CSTABLE sometimes? FUA? */
204
205 size = sizeof(struct aac_blockwrite);
206 sgt = &bw->SgMap;
207 } else {
208 br = (struct aac_blockread *)&fib->data[0];
209 br->Command = htole32(VM_CtBlockRead);
210 br->ContainerId = htole32(sc->sc_hwunit);
211 br->BlockNumber = htole32(blkno);
212 br->ByteCount = htole32(datasize);
213
214 size = sizeof(struct aac_blockread);
215 sgt = &br->SgMap;
216 }
217
218 xfer = ac->ac_dmamap_xfer;
219 sgt->SgCount = xfer->dm_nsegs;
220 sge = sgt->SgEntry;
221
222 for (i = 0; i < xfer->dm_nsegs; i++, sge++) {
223 sge->SgAddress = htole32(xfer->dm_segs[i].ds_addr);
224 sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len);
225 AAC_DPRINTF(AAC_D_IO,
226 ("#%d va %p pa %lx len %lx\n", i, data,
227 (u_long)xfer->dm_segs[i].ds_addr,
228 (u_long)xfer->dm_segs[i].ds_len));
229 }
230
231 size += xfer->dm_nsegs * sizeof(struct aac_sg_entry);
232 size = sizeof(fib->Header) + size;
233 fib->Header.Size = htole16(size);
234 } else {
235 struct aac_blockread64 *br;
236 struct aac_blockwrite64 *bw;
237 struct aac_sg_entry64 *sge;
238 struct aac_sg_table64 *sgt;
239
240 fib->Header.Command = htole16(ContainerCommand64);
241 if (dowrite) {
242 bw = (struct aac_blockwrite64 *)&fib->data[0];
243 bw->Command = htole32(VM_CtHostWrite64);
244 bw->BlockNumber = htole32(blkno);
245 bw->ContainerId = htole16(sc->sc_hwunit);
246 bw->SectorCount = htole16(datasize / AAC_BLOCK_SIZE);
247 bw->Pad = 0;
248 bw->Flags = 0;
249
250 size = sizeof(struct aac_blockwrite64);
251 sgt = &bw->SgMap64;
252 } else {
253 br = (struct aac_blockread64 *)&fib->data[0];
254 br->Command = htole32(VM_CtHostRead64);
255 br->BlockNumber = htole32(blkno);
256 br->ContainerId = htole16(sc->sc_hwunit);
257 br->SectorCount = htole16(datasize / AAC_BLOCK_SIZE);
258 br->Pad = 0;
259 br->Flags = 0;
260
261 size = sizeof(struct aac_blockread64);
262 sgt = &br->SgMap64;
263 }
264
265 xfer = ac->ac_dmamap_xfer;
266 sgt->SgCount = xfer->dm_nsegs;
267 sge = sgt->SgEntry64;
268
269 for (i = 0; i < xfer->dm_nsegs; i++, sge++) {
270 /*
271 * XXX - This is probably an alignment issue on non-x86
272 * platforms since this is a packed array of 64/32-bit
273 * tuples, so every other SgAddress is 32-bit, but not
274 * 64-bit aligned.
275 */
276 sge->SgAddress = htole64(xfer->dm_segs[i].ds_addr);
277 sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len);
278 AAC_DPRINTF(AAC_D_IO,
279 ("#%d va %p pa %lx len %lx\n", i, data,
280 (u_int64_t)xfer->dm_segs[i].ds_addr,
281 (u_long)xfer->dm_segs[i].ds_len));
282 }
283 size += xfer->dm_nsegs * sizeof(struct aac_sg_entry64);
284 size = sizeof(fib->Header) + size;
285 fib->Header.Size = htole16(size);
286 }
287
288 if (bp == NULL) {
289 /*
290 * Polled commands must not sit on the software queue. Wait
291 * up to 30 seconds for the command to complete.
292 */
293 s = splbio();
294 rv = aac_ccb_poll(aac, ac, 30000);
295 aac_ccb_unmap(aac, ac);
296 aac_ccb_free(aac, ac);
297 splx(s);
298
299 if (rv == 0) {
300 if (dowrite) {
301 bwr = (struct aac_blockwrite_response *)
302 &ac->ac_fib->data[0];
303 status = le32toh(bwr->Status);
304 } else {
305 brr = (struct aac_blockread_response *)
306 &ac->ac_fib->data[0];
307 status = le32toh(brr->Status);
308 }
309
310 if (status != ST_OK) {
311 printf("%s: I/O error: %s\n",
312 sc->sc_ld.sc_dv.dv_xname,
313 aac_describe_code(aac_command_status_table,
314 status));
315 rv = EIO;
316 }
317 }
318 } else {
319 ac->ac_device = (struct device *)sc;
320 ac->ac_context = bp;
321 ac->ac_intr = ld_aac_intr;
322 aac_ccb_enqueue(aac, ac);
323 rv = 0;
324 }
325
326 return (rv);
327 }
328
329 static int
330 ld_aac_start(struct ld_softc *ld, struct buf *bp)
331 {
332
333 return (ld_aac_dobio((struct ld_aac_softc *)ld, bp->b_data,
334 bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp));
335 }
336
337 static void
338 ld_aac_intr(struct aac_ccb *ac)
339 {
340 struct aac_blockread_response *brr;
341 struct aac_blockwrite_response *bwr;
342 struct ld_aac_softc *sc;
343 struct aac_softc *aac;
344 struct buf *bp;
345 u_int32_t status;
346
347 bp = ac->ac_context;
348 sc = (struct ld_aac_softc *)ac->ac_device;
349 aac = (struct aac_softc *)device_parent(&sc->sc_ld.sc_dv);
350
351 if ((bp->b_flags & B_READ) != 0) {
352 brr = (struct aac_blockread_response *)&ac->ac_fib->data[0];
353 status = le32toh(brr->Status);
354 } else {
355 bwr = (struct aac_blockwrite_response *)&ac->ac_fib->data[0];
356 status = le32toh(bwr->Status);
357 }
358
359 aac_ccb_unmap(aac, ac);
360 aac_ccb_free(aac, ac);
361
362 if (status != ST_OK) {
363 bp->b_flags |= B_ERROR;
364 bp->b_error = EIO;
365 bp->b_resid = bp->b_bcount;
366
367 printf("%s: I/O error: %s\n", sc->sc_ld.sc_dv.dv_xname,
368 aac_describe_code(aac_command_status_table, status));
369 } else
370 bp->b_resid = 0;
371
372 lddone(&sc->sc_ld, bp);
373 }
374
375 static int
376 ld_aac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
377 {
378
379 return (ld_aac_dobio((struct ld_aac_softc *)ld, data,
380 blkcnt * ld->sc_secsize, blkno, 1, NULL));
381 }
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