1 | /* $NetBSD: ld_aac.c,v 1.30 2016/09/27 03:33:32 pgoyette 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 | * |
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 | #include <sys/cdefs.h> |
33 | __KERNEL_RCSID(0, "$NetBSD: ld_aac.c,v 1.30 2016/09/27 03:33:32 pgoyette Exp $" ); |
34 | |
35 | #include <sys/param.h> |
36 | #include <sys/systm.h> |
37 | #include <sys/kernel.h> |
38 | #include <sys/device.h> |
39 | #include <sys/buf.h> |
40 | #include <sys/bufq.h> |
41 | #include <sys/endian.h> |
42 | #include <sys/dkio.h> |
43 | #include <sys/disk.h> |
44 | #include <sys/module.h> |
45 | |
46 | #include <sys/bus.h> |
47 | |
48 | #include <dev/ldvar.h> |
49 | |
50 | #include <dev/ic/aacreg.h> |
51 | #include <dev/ic/aacvar.h> |
52 | |
53 | #include "ioconf.h" |
54 | |
55 | struct ld_aac_softc { |
56 | struct ld_softc sc_ld; |
57 | int sc_hwunit; |
58 | }; |
59 | |
60 | static void ld_aac_attach(device_t, device_t, void *); |
61 | static void ld_aac_intr(struct aac_ccb *); |
62 | static int ld_aac_dobio(struct ld_aac_softc *, void *, int, daddr_t, int, |
63 | struct buf *); |
64 | static int ld_aac_dump(struct ld_softc *, void *, int, int); |
65 | static int ld_aac_match(device_t, cfdata_t, void *); |
66 | static int ld_aac_start(struct ld_softc *, struct buf *); |
67 | |
68 | CFATTACH_DECL_NEW(ld_aac, sizeof(struct ld_aac_softc), |
69 | ld_aac_match, ld_aac_attach, NULL, NULL); |
70 | |
71 | static int |
72 | ld_aac_match(device_t parent, cfdata_t match, void *aux) |
73 | { |
74 | |
75 | return (1); |
76 | } |
77 | |
78 | static void |
79 | ld_aac_attach(device_t parent, device_t self, void *aux) |
80 | { |
81 | struct aac_attach_args *aaca = aux; |
82 | struct ld_aac_softc *sc = device_private(self); |
83 | struct ld_softc *ld = &sc->sc_ld; |
84 | struct aac_softc *aac = device_private(parent); |
85 | struct aac_drive *hdr = &aac->sc_hdr[aaca->aaca_unit]; |
86 | |
87 | ld->sc_dv = self; |
88 | |
89 | sc->sc_hwunit = aaca->aaca_unit; |
90 | ld->sc_flags = LDF_ENABLED; |
91 | ld->sc_maxxfer = AAC_MAX_XFER(aac); |
92 | ld->sc_secperunit = hdr->hd_size; |
93 | ld->sc_secsize = AAC_SECTOR_SIZE; |
94 | ld->sc_maxqueuecnt = |
95 | (aac->sc_max_fibs - AAC_NCCBS_RESERVE) / aac->sc_nunits; |
96 | ld->sc_start = ld_aac_start; |
97 | ld->sc_dump = ld_aac_dump; |
98 | |
99 | aprint_normal(": %s\n" , |
100 | aac_describe_code(aac_container_types, hdr->hd_devtype)); |
101 | ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); |
102 | } |
103 | |
104 | static int |
105 | ld_aac_dobio(struct ld_aac_softc *sc, void *data, int datasize, daddr_t blkno, |
106 | int dowrite, struct buf *bp) |
107 | { |
108 | struct aac_blockread_response *brr; |
109 | struct aac_blockwrite_response *bwr; |
110 | struct aac_ccb *ac; |
111 | struct aac_softc *aac; |
112 | struct aac_fib *fib; |
113 | bus_dmamap_t xfer; |
114 | u_int32_t status; |
115 | u_int16_t size; |
116 | int s, rv, i; |
117 | |
118 | aac = device_private(device_parent(sc->sc_ld.sc_dv)); |
119 | |
120 | /* |
121 | * Allocate a command control block and map the data transfer. |
122 | */ |
123 | ac = aac_ccb_alloc(aac, (dowrite ? AAC_CCB_DATA_OUT : AAC_CCB_DATA_IN)); |
124 | if (ac == NULL) |
125 | return EBUSY; |
126 | ac->ac_data = data; |
127 | ac->ac_datalen = datasize; |
128 | |
129 | if ((rv = aac_ccb_map(aac, ac)) != 0) { |
130 | aac_ccb_free(aac, ac); |
131 | return (rv); |
132 | } |
133 | |
134 | /* |
135 | * Build the command. |
136 | */ |
137 | fib = ac->ac_fib; |
138 | |
139 | fib->Header.XferState = htole32(AAC_FIBSTATE_HOSTOWNED | |
140 | AAC_FIBSTATE_INITIALISED | AAC_FIBSTATE_FROMHOST | |
141 | AAC_FIBSTATE_REXPECTED | AAC_FIBSTATE_NORM | |
142 | AAC_FIBSTATE_ASYNC | AAC_FIBSTATE_FAST_RESPONSE ); |
143 | |
144 | if (aac->sc_quirks & AAC_QUIRK_RAW_IO) { |
145 | struct aac_raw_io *raw; |
146 | struct aac_sg_entryraw *sge; |
147 | struct aac_sg_tableraw *sgt; |
148 | |
149 | raw = (struct aac_raw_io *)&fib->data[0]; |
150 | fib->Header.Command = htole16(RawIo); |
151 | raw->BlockNumber = htole64(blkno); |
152 | raw->ByteCount = htole32(datasize); |
153 | raw->ContainerId = htole16(sc->sc_hwunit); |
154 | raw->BpTotal = 0; |
155 | raw->BpComplete = 0; |
156 | size = sizeof(struct aac_raw_io); |
157 | sgt = &raw->SgMapRaw; |
158 | raw->Flags = (dowrite ? 0 : 1); |
159 | |
160 | xfer = ac->ac_dmamap_xfer; |
161 | sgt->SgCount = xfer->dm_nsegs; |
162 | sge = sgt->SgEntryRaw; |
163 | |
164 | for (i = 0; i < xfer->dm_nsegs; i++, sge++) { |
165 | sge->SgAddress = htole64(xfer->dm_segs[i].ds_addr); |
166 | sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len); |
167 | sge->Next = 0; |
168 | sge->Prev = 0; |
169 | sge->Flags = 0; |
170 | } |
171 | size += xfer->dm_nsegs * sizeof(struct aac_sg_entryraw); |
172 | size = sizeof(fib->Header) + size; |
173 | fib->Header.Size = htole16(size); |
174 | } else if ((aac->sc_quirks & AAC_QUIRK_SG_64BIT) == 0) { |
175 | struct aac_blockread *br; |
176 | struct aac_blockwrite *bw; |
177 | struct aac_sg_entry *sge; |
178 | struct aac_sg_table *sgt; |
179 | |
180 | fib->Header.Command = htole16(ContainerCommand); |
181 | if (dowrite) { |
182 | bw = (struct aac_blockwrite *)&fib->data[0]; |
183 | bw->Command = htole32(VM_CtBlockWrite); |
184 | bw->ContainerId = htole32(sc->sc_hwunit); |
185 | bw->BlockNumber = htole32(blkno); |
186 | bw->ByteCount = htole32(datasize); |
187 | bw->Stable = htole32(CUNSTABLE); |
188 | /* CSTABLE sometimes? FUA? */ |
189 | |
190 | size = sizeof(struct aac_blockwrite); |
191 | sgt = &bw->SgMap; |
192 | } else { |
193 | br = (struct aac_blockread *)&fib->data[0]; |
194 | br->Command = htole32(VM_CtBlockRead); |
195 | br->ContainerId = htole32(sc->sc_hwunit); |
196 | br->BlockNumber = htole32(blkno); |
197 | br->ByteCount = htole32(datasize); |
198 | |
199 | size = sizeof(struct aac_blockread); |
200 | sgt = &br->SgMap; |
201 | } |
202 | |
203 | xfer = ac->ac_dmamap_xfer; |
204 | sgt->SgCount = xfer->dm_nsegs; |
205 | sge = sgt->SgEntry; |
206 | |
207 | for (i = 0; i < xfer->dm_nsegs; i++, sge++) { |
208 | sge->SgAddress = htole32(xfer->dm_segs[i].ds_addr); |
209 | sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len); |
210 | AAC_DPRINTF(AAC_D_IO, |
211 | ("#%d va %p pa %" PRIxPADDR " len %zx\n" , |
212 | i, data, xfer->dm_segs[i].ds_addr, |
213 | xfer->dm_segs[i].ds_len)); |
214 | } |
215 | |
216 | size += xfer->dm_nsegs * sizeof(struct aac_sg_entry); |
217 | size = sizeof(fib->Header) + size; |
218 | fib->Header.Size = htole16(size); |
219 | } else { |
220 | struct aac_blockread64 *br; |
221 | struct aac_blockwrite64 *bw; |
222 | struct aac_sg_entry64 *sge; |
223 | struct aac_sg_table64 *sgt; |
224 | |
225 | fib->Header.Command = htole16(ContainerCommand64); |
226 | if (dowrite) { |
227 | bw = (struct aac_blockwrite64 *)&fib->data[0]; |
228 | bw->Command = htole32(VM_CtHostWrite64); |
229 | bw->BlockNumber = htole32(blkno); |
230 | bw->ContainerId = htole16(sc->sc_hwunit); |
231 | bw->SectorCount = htole16(datasize / AAC_BLOCK_SIZE); |
232 | bw->Pad = 0; |
233 | bw->Flags = 0; |
234 | |
235 | size = sizeof(struct aac_blockwrite64); |
236 | sgt = &bw->SgMap64; |
237 | } else { |
238 | br = (struct aac_blockread64 *)&fib->data[0]; |
239 | br->Command = htole32(VM_CtHostRead64); |
240 | br->BlockNumber = htole32(blkno); |
241 | br->ContainerId = htole16(sc->sc_hwunit); |
242 | br->SectorCount = htole16(datasize / AAC_BLOCK_SIZE); |
243 | br->Pad = 0; |
244 | br->Flags = 0; |
245 | |
246 | size = sizeof(struct aac_blockread64); |
247 | sgt = &br->SgMap64; |
248 | } |
249 | |
250 | xfer = ac->ac_dmamap_xfer; |
251 | sgt->SgCount = xfer->dm_nsegs; |
252 | sge = sgt->SgEntry64; |
253 | |
254 | for (i = 0; i < xfer->dm_nsegs; i++, sge++) { |
255 | /* |
256 | * XXX - This is probably an alignment issue on non-x86 |
257 | * platforms since this is a packed array of 64/32-bit |
258 | * tuples, so every other SgAddress is 32-bit, but not |
259 | * 64-bit aligned. |
260 | */ |
261 | sge->SgAddress = htole64(xfer->dm_segs[i].ds_addr); |
262 | sge->SgByteCount = htole32(xfer->dm_segs[i].ds_len); |
263 | AAC_DPRINTF(AAC_D_IO, |
264 | ("#%d va %p pa %" PRIxPADDR " len %zx\n" , |
265 | i, data, xfer->dm_segs[i].ds_addr, |
266 | xfer->dm_segs[i].ds_len)); |
267 | } |
268 | size += xfer->dm_nsegs * sizeof(struct aac_sg_entry64); |
269 | size = sizeof(fib->Header) + size; |
270 | fib->Header.Size = htole16(size); |
271 | } |
272 | |
273 | if (bp == NULL) { |
274 | /* |
275 | * Polled commands must not sit on the software queue. Wait |
276 | * up to 30 seconds for the command to complete. |
277 | */ |
278 | s = splbio(); |
279 | rv = aac_ccb_poll(aac, ac, 30000); |
280 | aac_ccb_unmap(aac, ac); |
281 | aac_ccb_free(aac, ac); |
282 | splx(s); |
283 | |
284 | if (rv == 0) { |
285 | if (dowrite) { |
286 | bwr = (struct aac_blockwrite_response *) |
287 | &ac->ac_fib->data[0]; |
288 | status = le32toh(bwr->Status); |
289 | } else { |
290 | brr = (struct aac_blockread_response *) |
291 | &ac->ac_fib->data[0]; |
292 | status = le32toh(brr->Status); |
293 | } |
294 | |
295 | if (status != ST_OK) { |
296 | aprint_error_dev(sc->sc_ld.sc_dv, |
297 | "I/O error: %s\n" , |
298 | aac_describe_code(aac_command_status_table, |
299 | status)); |
300 | rv = EIO; |
301 | } |
302 | } |
303 | } else { |
304 | ac->ac_device = sc->sc_ld.sc_dv; |
305 | ac->ac_context = bp; |
306 | ac->ac_intr = ld_aac_intr; |
307 | aac_ccb_enqueue(aac, ac); |
308 | rv = 0; |
309 | } |
310 | |
311 | return (rv); |
312 | } |
313 | |
314 | static int |
315 | ld_aac_start(struct ld_softc *ld, struct buf *bp) |
316 | { |
317 | |
318 | return (ld_aac_dobio((struct ld_aac_softc *)ld, bp->b_data, |
319 | bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); |
320 | } |
321 | |
322 | static void |
323 | ld_aac_intr(struct aac_ccb *ac) |
324 | { |
325 | struct aac_blockread_response *brr; |
326 | struct aac_blockwrite_response *bwr; |
327 | struct ld_aac_softc *sc; |
328 | struct aac_softc *aac; |
329 | struct buf *bp; |
330 | u_int32_t status; |
331 | |
332 | bp = ac->ac_context; |
333 | sc = device_private(ac->ac_device); |
334 | aac = device_private(device_parent(ac->ac_device)); |
335 | |
336 | if ((bp->b_flags & B_READ) != 0) { |
337 | brr = (struct aac_blockread_response *)&ac->ac_fib->data[0]; |
338 | status = le32toh(brr->Status); |
339 | } else { |
340 | bwr = (struct aac_blockwrite_response *)&ac->ac_fib->data[0]; |
341 | status = le32toh(bwr->Status); |
342 | } |
343 | |
344 | aac_ccb_unmap(aac, ac); |
345 | aac_ccb_free(aac, ac); |
346 | |
347 | if (status != ST_OK) { |
348 | bp->b_error = EIO; |
349 | bp->b_resid = bp->b_bcount; |
350 | |
351 | aprint_error_dev(sc->sc_ld.sc_dv, "I/O error: %s\n" , |
352 | aac_describe_code(aac_command_status_table, status)); |
353 | } else |
354 | bp->b_resid = 0; |
355 | |
356 | lddone(&sc->sc_ld, bp); |
357 | } |
358 | |
359 | static int |
360 | ld_aac_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) |
361 | { |
362 | |
363 | return (ld_aac_dobio((struct ld_aac_softc *)ld, data, |
364 | blkcnt * ld->sc_secsize, blkno, 1, NULL)); |
365 | } |
366 | |
367 | MODULE(MODULE_CLASS_DRIVER, ld_aac, "ld,aac" ); |
368 | |
369 | #ifdef _MODULE |
370 | /* |
371 | * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" |
372 | * XXX it will be defined in the common-code module |
373 | */ |
374 | #undef CFDRIVER_DECL |
375 | #define CFDRIVER_DECL(name, class, attr) |
376 | #include "ioconf.c" |
377 | #endif |
378 | |
379 | static int |
380 | ld_aac_modcmd(modcmd_t cmd, void *opaque) |
381 | { |
382 | #ifdef _MODULE |
383 | /* |
384 | * We ignore the cfdriver_vec[] that ioconf provides, since |
385 | * the cfdrivers are attached already. |
386 | */ |
387 | static struct cfdriver * const no_cfdriver_vec[] = { NULL }; |
388 | #endif |
389 | int error = 0; |
390 | |
391 | #ifdef _MODULE |
392 | switch (cmd) { |
393 | case MODULE_CMD_INIT: |
394 | error = config_init_component(no_cfdriver_vec, |
395 | cfattach_ioconf_ld_aac, cfdata_ioconf_ld_aac); |
396 | break; |
397 | case MODULE_CMD_FINI: |
398 | error = config_fini_component(no_cfdriver_vec, |
399 | cfattach_ioconf_ld_aac, cfdata_ioconf_ld_aac); |
400 | break; |
401 | default: |
402 | error = ENOTTY; |
403 | break; |
404 | } |
405 | #endif |
406 | |
407 | return error; |
408 | } |
409 | |
410 | |