Bug Summary

File:dev/ic/aic79xx_openbsd.c
Warning:line 277, column 2
Value stored to 'tinfo' is never read

Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name aic79xx_openbsd.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model static -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -ffreestanding -mcmodel=kernel -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -target-feature -sse2 -target-feature -sse -target-feature -3dnow -target-feature -mmx -target-feature +save-args -disable-red-zone -no-implicit-float -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -nostdsysteminc -nobuiltininc -resource-dir /usr/local/lib/clang/13.0.0 -I /usr/src/sys -I /usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -I /usr/src/sys/arch -I /usr/src/sys/dev/pci/drm/include -I /usr/src/sys/dev/pci/drm/include/uapi -I /usr/src/sys/dev/pci/drm/amd/include/asic_reg -I /usr/src/sys/dev/pci/drm/amd/include -I /usr/src/sys/dev/pci/drm/amd/amdgpu -I /usr/src/sys/dev/pci/drm/amd/display -I /usr/src/sys/dev/pci/drm/amd/display/include -I /usr/src/sys/dev/pci/drm/amd/display/dc -I /usr/src/sys/dev/pci/drm/amd/display/amdgpu_dm -I /usr/src/sys/dev/pci/drm/amd/pm/inc -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu11 -I /usr/src/sys/dev/pci/drm/amd/pm/swsmu/smu12 -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/hwmgr -I /usr/src/sys/dev/pci/drm/amd/pm/powerplay/smumgr -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc -I /usr/src/sys/dev/pci/drm/amd/display/dc/inc/hw -I /usr/src/sys/dev/pci/drm/amd/display/dc/clk_mgr -I /usr/src/sys/dev/pci/drm/amd/display/modules/inc -I /usr/src/sys/dev/pci/drm/amd/display/modules/hdcp -I /usr/src/sys/dev/pci/drm/amd/display/dmub/inc -I /usr/src/sys/dev/pci/drm/i915 -D DDB -D DIAGNOSTIC -D KTRACE -D ACCOUNTING -D KMEMSTATS -D PTRACE -D POOL_DEBUG -D CRYPTO -D SYSVMSG -D SYSVSEM -D SYSVSHM -D UVM_SWAP_ENCRYPT -D FFS -D FFS2 -D FFS_SOFTUPDATES -D UFS_DIRHASH -D QUOTA -D EXT2FS -D MFS -D NFSCLIENT -D NFSSERVER -D CD9660 -D UDF -D MSDOSFS -D FIFO -D FUSE -D SOCKET_SPLICE -D TCP_ECN -D TCP_SIGNATURE -D INET6 -D IPSEC -D PPP_BSDCOMP -D PPP_DEFLATE -D PIPEX -D MROUTING -D MPLS -D BOOT_CONFIG -D USER_PCICONF -D APERTURE -D MTRR -D NTFS -D HIBERNATE -D PCIVERBOSE -D USBVERBOSE -D WSDISPLAY_COMPAT_USL -D WSDISPLAY_COMPAT_RAWKBD -D WSDISPLAY_DEFAULTSCREENS=6 -D X86EMU -D ONEWIREVERBOSE -D MULTIPROCESSOR -D MAXUSERS=80 -D _KERNEL -D CONFIG_DRM_AMD_DC_DCN3_0 -O2 -Wno-pointer-sign -Wno-address-of-packed-member -Wno-constant-conversion -Wno-unused-but-set-variable -Wno-gnu-folding-constant -fdebug-compilation-dir=/usr/src/sys/arch/amd64/compile/GENERIC.MP/obj -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -o /usr/obj/sys/arch/amd64/compile/GENERIC.MP/scan-build/2022-01-12-131800-47421-1 -x c /usr/src/sys/dev/ic/aic79xx_openbsd.c
1/* $OpenBSD: aic79xx_openbsd.c,v 1.59 2020/09/22 19:32:52 krw Exp $ */
2
3/*
4 * Copyright (c) 2004 Milos Urbanek, Kenneth R. Westerback & Marco Peereboom
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR
20 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 *
28 */
29
30/*
31 * Bus independent OpenBSD shim for the aic79xx based Adaptec SCSI controllers
32 *
33 * Copyright (c) 1994-2002 Justin T. Gibbs.
34 * Copyright (c) 2001-2002 Adaptec Inc.
35 * All rights reserved.
36 *
37 * Redistribution and use in source and binary forms, with or without
38 * modification, are permitted provided that the following conditions
39 * are met:
40 * 1. Redistributions of source code must retain the above copyright
41 * notice, this list of conditions, and the following disclaimer,
42 * without modification.
43 * 2. The name of the author may not be used to endorse or promote products
44 * derived from this software without specific prior written permission.
45 *
46 * Alternatively, this software may be distributed under the terms of the
47 * GNU Public License ("GPL").
48 *
49 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
50 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
53 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59 * SUCH DAMAGE.
60 *
61 */
62
63#include <dev/ic/aic79xx_openbsd.h>
64#include <dev/ic/aic79xx_inline.h>
65#include <dev/ic/aic79xx.h>
66
67#ifndef AHD_TMODE_ENABLE0
68#define AHD_TMODE_ENABLE0 0
69#endif
70
71/* XXX milos add ahd_ioctl */
72void ahd_action(struct scsi_xfer *);
73void ahd_execute_scb(void *, bus_dma_segment_t *, int);
74int ahd_poll(struct ahd_softc *, int);
75void ahd_setup_data(struct ahd_softc *, struct scsi_xfer *,
76 struct scb *);
77
78void ahd_adapter_req_set_xfer_mode(struct ahd_softc *, struct scb *);
79
80struct cfdriver ahd_cd = {
81 NULL((void *)0), "ahd", DV_DULL
82};
83
84static struct scsi_adapter ahd_switch = {
85 ahd_action, NULL((void *)0), NULL((void *)0), NULL((void *)0), NULL((void *)0)
86};
87
88/*
89 * Attach all the sub-devices we can find
90 */
91int
92ahd_attach(struct ahd_softc *ahd)
93{
94 struct scsibus_attach_args saa;
95 char ahd_info[256];
96 int s;
97
98 ahd_controller_info(ahd, ahd_info, sizeof ahd_info);
99 printf("%s\n", ahd_info);
100 ahd_lock(ahd, &s)*(&s) = splraise(0x6);
101
102 if (bootverbose0) {
103 ahd_controller_info(ahd, ahd_info, sizeof ahd_info);
104 printf("%s: %s\n", ahd->sc_dev.dv_xname, ahd_info);
105 }
106
107 ahd_intr_enable(ahd, TRUE1);
108
109 if (ahd->flags & AHD_RESET_BUS_A)
110 ahd_reset_channel(ahd, 'A', TRUE1);
111
112 saa.saa_adapter_target = ahd->our_id;
113 saa.saa_adapter_buswidth = (ahd->features & AHD_WIDE) ? 16 : 8;
114 saa.saa_adapter_softc = ahd;
115 saa.saa_adapter = &ahd_switch;
116 saa.saa_luns = 8;
117 saa.saa_openings = 16; /* Must ALWAYS be < 256!! */
118 saa.saa_pool = &ahd->sc_iopool;
119 saa.saa_quirks = saa.saa_flags = 0;
120 saa.saa_wwpn = saa.saa_wwnn = 0;
121
122 ahd->sc_child = config_found((void *)&ahd->sc_dev, &saa, scsiprint)config_found_sm(((void *)&ahd->sc_dev), (&saa), (scsiprint
), ((void *)0));
123
124 ahd_unlock(ahd, &s)spllower(*(&s));
125
126 return (1);
127
128}
129
130/*
131 * Catch an interrupt from the adapter
132 */
133int
134ahd_platform_intr(void *arg)
135{
136 struct ahd_softc *ahd;
137
138 /* XXX in ahc there is some bus_dmamap_sync(PREREAD|PREWRITE); */
139
140 ahd = (struct ahd_softc *)arg;
141 return ahd_intr(ahd);
142}
143
144/*
145 * We have an scb which has been processed by the
146 * adaptor, now we look to see how the operation
147 * went.
148 */
149void
150ahd_done(struct ahd_softc *ahd, struct scb *scb)
151{
152 struct scsi_xfer *xs = scb->xs;
153
154 /* XXX in ahc there is some bus_dmamap_sync(PREREAD|PREWRITE); */
155
156 TAILQ_REMOVE(&ahd->pending_scbs, scb, next)do { if (((scb)->next.tqe_next) != ((void *)0)) (scb)->
next.tqe_next->next.tqe_prev = (scb)->next.tqe_prev; else
(&ahd->pending_scbs)->tqh_last = (scb)->next.tqe_prev
; *(scb)->next.tqe_prev = (scb)->next.tqe_next; ((scb)->
next.tqe_prev) = ((void *)-1); ((scb)->next.tqe_next) = ((
void *)-1); } while (0);
157
158 timeout_del(&xs->stimeout);
159
160 if (xs->datalen) {
161 int op;
162
163 if ((xs->flags & SCSI_DATA_IN0x00800) != 0)
164 op = BUS_DMASYNC_POSTREAD0x02;
165 else
166 op = BUS_DMASYNC_POSTWRITE0x08;
167 bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0,(*(ahd->parent_dmat)->_dmamap_sync)((ahd->parent_dmat
), (scb->dmamap), (0), (scb->dmamap->dm_mapsize), (op
))
168 scb->dmamap->dm_mapsize, op)(*(ahd->parent_dmat)->_dmamap_sync)((ahd->parent_dmat
), (scb->dmamap), (0), (scb->dmamap->dm_mapsize), (op
));
169 bus_dmamap_unload(ahd->parent_dmat, scb->dmamap)(*(ahd->parent_dmat)->_dmamap_unload)((ahd->parent_dmat
), (scb->dmamap));
170 }
171
172 /* Translate the CAM status code to a SCSI error code. */
173 switch (xs->error) {
174 case CAM_SCSI_STATUS_ERROR:
175 case CAM_REQ_INPROG:
176 case CAM_REQ_CMP:
177 switch (xs->status) {
178 case SCSI_TASKSET_FULL0x28:
179 case SCSI_BUSY0x08:
180 xs->error = XS_BUSY5;
181 break;
182 case SCSI_CHECK0x02:
183 case SCSI_TERMINATED0x22:
184 if ((scb->flags & SCB_SENSE) == 0) {
185 /* CHECK on CHECK? */
186 xs->error = XS_DRIVER_STUFFUP2;
187 } else
188 xs->error = XS_NOERROR0;
189 break;
190 default:
191 xs->error = XS_NOERROR0;
192 break;
193 }
194 break;
195 case CAM_BUSY:
196 case CAM_REQUEUE_REQ:
197 xs->error = XS_BUSY5;
198 break;
199 case CAM_CMD_TIMEOUT:
200 xs->error = XS_TIMEOUT4;
201 break;
202 case CAM_BDR_SENT:
203 case CAM_SCSI_BUS_RESET:
204 xs->error = XS_RESET8;
205 break;
206 case CAM_SEL_TIMEOUT:
207 xs->error = XS_SELTIMEOUT3;
208 break;
209 default:
210 xs->error = XS_DRIVER_STUFFUP2;
211 break;
212 }
213
214 if (xs->error != XS_NOERROR0) {
215 /* Don't clobber any existing error state */
216 } else if ((scb->flags & SCB_SENSE) != 0) {
217 /*
218 * We performed autosense retrieval.
219 *
220 * Zero any sense not transferred by the
221 * device. The SCSI spec mandates that any
222 * untransferred data should be assumed to be
223 * zero. Complete the 'bounce' of sense information
224 * through buffers accessible via bus-space by
225 * copying it into the clients csio.
226 */
227 memset(&xs->sense, 0, sizeof(struct scsi_sense_data))__builtin_memset((&xs->sense), (0), (sizeof(struct scsi_sense_data
)));
228 memcpy(&xs->sense, ahd_get_sense_buf(ahd, scb),__builtin_memcpy((&xs->sense), (ahd_get_sense_buf(ahd,
scb)), (sizeof(struct scsi_sense_data)))
229 sizeof(struct scsi_sense_data))__builtin_memcpy((&xs->sense), (ahd_get_sense_buf(ahd,
scb)), (sizeof(struct scsi_sense_data)));
230 xs->error = XS_SENSE1;
231 } else if ((scb->flags & SCB_PKT_SENSE) != 0) {
232 struct scsi_status_iu_header *siu;
233 u_int32_t len;
234
235 siu = (struct scsi_status_iu_header *)scb->sense_data;
236 len = SIU_SENSE_LENGTH(siu)(_4btol((siu)->sense_length));
237 memset(&xs->sense, 0, sizeof(xs->sense))__builtin_memset((&xs->sense), (0), (sizeof(xs->sense
)));
238 memcpy(&xs->sense, SIU_SENSE_DATA(siu),__builtin_memcpy((&xs->sense), ((((siu)->flags &
0x1) ? &(siu)->data[_4btol((siu)->pkt_failures_length
)] : &(siu)->data[0])), (ulmin(len, sizeof(xs->sense
))))
239 ulmin(len, sizeof(xs->sense)))__builtin_memcpy((&xs->sense), ((((siu)->flags &
0x1) ? &(siu)->data[_4btol((siu)->pkt_failures_length
)] : &(siu)->data[0])), (ulmin(len, sizeof(xs->sense
))));
240 xs->error = XS_SENSE1;
241 }
242
243 scsi_done(xs);
244}
245
246void
247ahd_action(struct scsi_xfer *xs)
248{
249 struct ahd_softc *ahd;
250 struct scb *scb;
251 struct hardware_scb *hscb;
252 u_int target_id;
253 u_int our_id;
254 int s;
255 struct ahd_initiator_tinfo *tinfo;
256 struct ahd_tmode_tstate *tstate;
257 u_int16_t quirks;
258
259#ifdef AHD_DEBUG
260 printf("%s: ahd_action\n", ahd_name(ahd));
261#endif
262 ahd = xs->sc_link->bus->sb_adapter_softc;
263
264 target_id = xs->sc_link->target;
265 our_id = SCSI_SCSI_ID(ahd, xs->sc_link)(ahd->our_id);
266
267 ahd_lock(ahd, &s)*(&s) = splraise(0x6);
268 if ((ahd->flags & AHD_INITIATORROLE) == 0) {
269 xs->error = XS_DRIVER_STUFFUP2;
270 scsi_done(xs);
271 ahd_unlock(ahd, &s)spllower(*(&s));
272 return;
273 }
274 /*
275 * get an scb to use.
276 */
277 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id, target_id, &tstate);
Value stored to 'tinfo' is never read
278
279 quirks = xs->sc_link->quirks;
280
281 ahd_unlock(ahd, &s)spllower(*(&s));
282
283 scb = xs->io;
284 hscb = scb->hscb;
285 scb->flags = SCB_FLAG_NONE;
286 scb->hscb->control = 0;
287 ahd->scb_data.scbindex[SCB_GET_TAG(scb)((__uint16_t)(scb->hscb->tag))] = NULL((void *)0);
288
289#ifdef AHD_DEBUG
290 printf("%s: start scb(%p)\n", ahd_name(ahd), scb);
291#endif
292
293 scb->xs = xs;
294 timeout_set(&xs->stimeout, ahd_timeout, scb);
295
296 /*
297 * Put all the arguments for the xfer in the scb
298 */
299 hscb->control = 0;
300 hscb->scsiid = BUILD_SCSIID(ahd, xs->sc_link, target_id, our_id)((((target_id) << 0x04) & 0xf0) | (our_id));
301 hscb->lun = xs->sc_link->lun;
302 if (xs->xs_controlflags & XS_CTL_RESET0x00200) {
303 hscb->cdb_len = 0;
304 scb->flags |= SCB_DEVICE_RESET;
305 hscb->control |= MK_MESSAGE0x10;
306 hscb->task_management = SIU_TASKMGMT_LUN_RESET0x08;
307 ahd_execute_scb(scb, NULL((void *)0), 0);
308 } else {
309 hscb->task_management = 0;
310 ahd_setup_data(ahd, xs, scb);
311 }
312}
313
314void
315ahd_execute_scb(void *arg, bus_dma_segment_t *dm_segs, int nsegments)
316{
317 struct scb *scb;
318 struct scsi_xfer *xs;
319 struct ahd_softc *ahd;
320 struct ahd_initiator_tinfo *tinfo;
321 struct ahd_tmode_tstate *tstate;
322 u_int mask;
323 int s;
324
325 scb = (struct scb *)arg;
326 xs = scb->xs;
327 xs->error = CAM_REQ_INPROG;
328 xs->status = 0;
329 ahd = xs->sc_link->bus->sb_adapter_softc;
330
331 if (nsegments != 0) {
332 void *sg;
333 int op;
334 u_int i;
335
336 ahd_setup_data_scb(ahd, scb);
337
338 /* Copy the segments into our SG list */
339 for (i = nsegments, sg = scb->sg_list; i > 0; i--) {
340
341 sg = ahd_sg_setup(ahd, scb, sg, dm_segs->ds_addr,
342 dm_segs->ds_len,
343 /*last*/i == 1);
344 dm_segs++;
345 }
346
347 if ((xs->flags & SCSI_DATA_IN0x00800) != 0)
348 op = BUS_DMASYNC_PREREAD0x01;
349 else
350 op = BUS_DMASYNC_PREWRITE0x04;
351
352 bus_dmamap_sync(ahd->parent_dmat, scb->dmamap, 0,(*(ahd->parent_dmat)->_dmamap_sync)((ahd->parent_dmat
), (scb->dmamap), (0), (scb->dmamap->dm_mapsize), (op
))
353 scb->dmamap->dm_mapsize, op)(*(ahd->parent_dmat)->_dmamap_sync)((ahd->parent_dmat
), (scb->dmamap), (0), (scb->dmamap->dm_mapsize), (op
));
354
355 }
356
357 ahd_lock(ahd, &s)*(&s) = splraise(0x6);
358
359 /*
360 * Last time we need to check if this SCB needs to
361 * be aborted.
362 */
363 if (xs->flags & ITSDONE0x00008) {
364 if (nsegments != 0)
365 bus_dmamap_unload(ahd->parent_dmat,(*(ahd->parent_dmat)->_dmamap_unload)((ahd->parent_dmat
), (scb->dmamap))
366 scb->dmamap)(*(ahd->parent_dmat)->_dmamap_unload)((ahd->parent_dmat
), (scb->dmamap));
367 ahd_unlock(ahd, &s)spllower(*(&s));
368 return;
369 }
370
371 tinfo = ahd_fetch_transinfo(ahd, SCSIID_CHANNEL(ahd, scb->hscb->scsiid)('A'),
372 SCSIID_OUR_ID(scb->hscb->scsiid)((scb->hscb->scsiid) & 0x0f),
373 SCSIID_TARGET(ahd, scb->hscb->scsiid)(((scb->hscb->scsiid) & 0xf0) >> 0x04),
374 &tstate);
375
376 mask = SCB_GET_TARGET_MASK(ahd, scb)(0x01 << (((((scb)->hscb->scsiid) & 0xf0) >>
0x04)));
377
378 if ((tstate->discenable & mask) != 0)
379 scb->hscb->control |= DISCENB0x40;
380
381 if ((tstate->tagenable & mask) != 0)
382 scb->hscb->control |= TAG_ENB0x20;
383
384 if ((tinfo->curr.ppr_options & MSG_EXT_PPR_PROT_IUS0x01) != 0) {
385 scb->flags |= SCB_PACKETIZED;
386 if (scb->hscb->task_management != 0)
387 scb->hscb->control &= ~MK_MESSAGE0x10;
388 }
389
390 if ((tstate->auto_negotiate & mask) != 0) {
391 scb->flags |= SCB_AUTO_NEGOTIATE;
392 scb->hscb->control |= MK_MESSAGE0x10;
393 }
394
395 /* XXX with ahc there was some bus_dmamap_sync(PREREAD|PREWRITE); */
396
397 TAILQ_INSERT_HEAD(&ahd->pending_scbs, scb, next)do { if (((scb)->next.tqe_next = (&ahd->pending_scbs
)->tqh_first) != ((void *)0)) (&ahd->pending_scbs)->
tqh_first->next.tqe_prev = &(scb)->next.tqe_next; else
(&ahd->pending_scbs)->tqh_last = &(scb)->next
.tqe_next; (&ahd->pending_scbs)->tqh_first = (scb);
(scb)->next.tqe_prev = &(&ahd->pending_scbs)->
tqh_first; } while (0);
398
399 if (!(xs->flags & SCSI_POLL0x00002))
400 timeout_add_msec(&xs->stimeout, xs->timeout);
401
402 scb->flags |= SCB_ACTIVE;
403
404 if ((scb->flags & SCB_TARGET_IMMEDIATE) != 0) {
405 /* Define a mapping from our tag to the SCB. */
406 ahd->scb_data.scbindex[SCB_GET_TAG(scb)((__uint16_t)(scb->hscb->tag))] = scb;
407 ahd_pause(ahd);
408 ahd_set_scbptr(ahd, SCB_GET_TAG(scb)((__uint16_t)(scb->hscb->tag)));
409 ahd_outb(ahd, RETURN_1, CONT_MSG_LOOP_TARG)(((ahd)->tags[(0x148) >> 8])->write_1(((ahd)->
bshs[(0x148) >> 8]), ((0x148) & 0xFF), (0x02)));
410 ahd_unpause(ahd);
411 } else {
412 ahd_queue_scb(ahd, scb);
413 }
414
415 if (!(xs->flags & SCSI_POLL0x00002)) {
416 int target = xs->sc_link->target;
417 int lun = SCB_GET_LUN(scb)((scb)->hscb->lun);
418
419 if (ahd->inited_target[target] == 0) {
420 struct ahd_devinfo devinfo;
421
422 ahd_adapter_req_set_xfer_mode(ahd, scb);
423 ahd_compile_devinfo(&devinfo, ahd->our_id, target, lun,
424 'A', /*XXX milos*/ROLE_UNKNOWN);
425 ahd_scb_devinfo(ahd, &devinfo, scb);
426 ahd_update_neg_request(ahd, &devinfo, tstate, tinfo,
427 AHD_NEG_IF_NON_ASYNC);
428 ahd->inited_target[target] = 1;
429 }
430
431 ahd_unlock(ahd, &s)spllower(*(&s));
432 return;
433 }
434
435 /*
436 * If we can't use interrupts, poll for completion
437 */
438#ifdef AHD_DEBUG
439 printf("%s: cmd_poll\n", ahd_name(ahd));
440#endif
441
442 do {
443 if (ahd_poll(ahd, xs->timeout)) {
444 if (!(xs->flags & SCSI_SILENT0x00020))
445 printf("cmd fail\n");
446 ahd_timeout(scb);
447 break;
448 }
449 } while (!(xs->flags & ITSDONE0x00008));
450
451 ahd_unlock(ahd, &s)spllower(*(&s));
452}
453
454int
455ahd_poll(struct ahd_softc *ahd, int wait)
456{
457 while (--wait) {
458 DELAY(1000)(*delay_func)(1000);
459 if (ahd_inb(ahd, INTSTAT)(((ahd)->tags[(0x01) >> 8])->read_1(((ahd)->bshs
[(0x01) >> 8]), ((0x01) & 0xFF))) & INT_PEND0xff)
460 break;
461 }
462
463 if (wait == 0) {
464 printf("%s: board is not responding\n", ahd_name(ahd));
465 return (EIO5);
466 }
467
468 ahd_intr((void *)ahd);
469 return (0);
470}
471
472void
473ahd_setup_data(struct ahd_softc *ahd, struct scsi_xfer *xs,
474 struct scb *scb)
475{
476 struct hardware_scb *hscb;
477
478 hscb = scb->hscb;
479 xs->resid = xs->status = 0;
480 xs->error = CAM_REQ_INPROG;
481
482 hscb->cdb_len = xs->cmdlen;
483 if (hscb->cdb_len > MAX_CDB_LEN16) {
484 xs->error = XS_DRIVER_STUFFUP2;
485 scsi_done(xs);
486 return;
487 }
488
489 memcpy(hscb->shared_data.idata.cdb, &xs->cmd, hscb->cdb_len)__builtin_memcpy((hscb->shared_data.idata.cdb), (&xs->
cmd), (hscb->cdb_len));
490
491 /* Only use S/G if there is a transfer */
492 if (xs->datalen) {
493 int error;
494
495 error = bus_dmamap_load(ahd->parent_dmat,(*(ahd->parent_dmat)->_dmamap_load)((ahd->parent_dmat
), (scb->dmamap), (xs->data), (xs->datalen), (((void
*)0)), (((xs->flags & 0x00001) ? 0x0001 : 0x0000) | 0x0100
| ((xs->flags & 0x00800) ? 0x0200 : 0x0400)))
496 scb->dmamap, xs->data,(*(ahd->parent_dmat)->_dmamap_load)((ahd->parent_dmat
), (scb->dmamap), (xs->data), (xs->datalen), (((void
*)0)), (((xs->flags & 0x00001) ? 0x0001 : 0x0000) | 0x0100
| ((xs->flags & 0x00800) ? 0x0200 : 0x0400)))
497 xs->datalen, NULL,(*(ahd->parent_dmat)->_dmamap_load)((ahd->parent_dmat
), (scb->dmamap), (xs->data), (xs->datalen), (((void
*)0)), (((xs->flags & 0x00001) ? 0x0001 : 0x0000) | 0x0100
| ((xs->flags & 0x00800) ? 0x0200 : 0x0400)))
498 ((xs->flags & SCSI_NOSLEEP) ?(*(ahd->parent_dmat)->_dmamap_load)((ahd->parent_dmat
), (scb->dmamap), (xs->data), (xs->datalen), (((void
*)0)), (((xs->flags & 0x00001) ? 0x0001 : 0x0000) | 0x0100
| ((xs->flags & 0x00800) ? 0x0200 : 0x0400)))
499 BUS_DMA_NOWAIT : BUS_DMA_WAITOK) |(*(ahd->parent_dmat)->_dmamap_load)((ahd->parent_dmat
), (scb->dmamap), (xs->data), (xs->datalen), (((void
*)0)), (((xs->flags & 0x00001) ? 0x0001 : 0x0000) | 0x0100
| ((xs->flags & 0x00800) ? 0x0200 : 0x0400)))
500 BUS_DMA_STREAMING |(*(ahd->parent_dmat)->_dmamap_load)((ahd->parent_dmat
), (scb->dmamap), (xs->data), (xs->datalen), (((void
*)0)), (((xs->flags & 0x00001) ? 0x0001 : 0x0000) | 0x0100
| ((xs->flags & 0x00800) ? 0x0200 : 0x0400)))
501 ((xs->flags & XS_CTL_DATA_IN) ?(*(ahd->parent_dmat)->_dmamap_load)((ahd->parent_dmat
), (scb->dmamap), (xs->data), (xs->datalen), (((void
*)0)), (((xs->flags & 0x00001) ? 0x0001 : 0x0000) | 0x0100
| ((xs->flags & 0x00800) ? 0x0200 : 0x0400)))
502 BUS_DMA_READ : BUS_DMA_WRITE))(*(ahd->parent_dmat)->_dmamap_load)((ahd->parent_dmat
), (scb->dmamap), (xs->data), (xs->datalen), (((void
*)0)), (((xs->flags & 0x00001) ? 0x0001 : 0x0000) | 0x0100
| ((xs->flags & 0x00800) ? 0x0200 : 0x0400)));
503 if (error) {
504#ifdef AHD_DEBUG
505 printf("%s: in ahd_setup_data(): bus_dmamap_load() "
506 "= %d\n", ahd_name(ahd), error);
507#endif
508 xs->error = XS_DRIVER_STUFFUP2;
509 scsi_done(xs);
510 return;
511 }
512 ahd_execute_scb(scb, scb->dmamap->dm_segs,
513 scb->dmamap->dm_nsegs);
514 } else {
515 ahd_execute_scb(scb, NULL((void *)0), 0);
516 }
517}
518
519void
520ahd_platform_set_tags(struct ahd_softc *ahd, struct ahd_devinfo *devinfo,
521 ahd_queue_alg alg)
522{
523 struct ahd_tmode_tstate *tstate;
524
525 ahd_fetch_transinfo(ahd, devinfo->channel, devinfo->our_scsiid,
526 devinfo->target, &tstate);
527
528 if (alg != AHD_QUEUE_NONE)
529 tstate->tagenable |= devinfo->target_mask;
530 else
531 tstate->tagenable &= ~devinfo->target_mask;
532}
533
534int
535ahd_softc_comp(struct ahd_softc *lahd, struct ahd_softc *rahd)
536{
537 /* We don't sort softcs under OpenBSD so report equal always */
538 return (0);
539}
540
541int
542ahd_detach(struct device *self, int flags)
543{
544 int rv = 0;
545
546 struct ahd_softc *ahd = (struct ahd_softc*)self;
547
548 if (ahd->sc_child != NULL((void *)0))
549 rv = config_detach((void *)ahd->sc_child, flags);
550
551 ahd_free(ahd);
552
553 return rv;
554}
555
556void
557ahd_adapter_req_set_xfer_mode(struct ahd_softc *ahd, struct scb *scb)
558{
559 struct ahd_initiator_tinfo *tinfo;
560 struct ahd_tmode_tstate *tstate;
561 int target_id, our_id;
562 struct ahd_devinfo devinfo;
563 u_int16_t quirks;
564 u_int width, ppr_options, period, offset;
565 int s;
566
567 target_id = scb->xs->sc_link->target;
568 our_id = SCSI_SCSI_ID(ahd, scb->xs->sc_link)(ahd->our_id);
569
570 s = splbio()splraise(0x6);
571
572 quirks = scb->xs->sc_link->quirks;
573 tinfo = ahd_fetch_transinfo(ahd, 'A', our_id, target_id, &tstate);
574 ahd_compile_devinfo(&devinfo, our_id, target_id, 0, 'A',
575 ROLE_INITIATOR);
576
577 tstate->discenable |= (ahd->user_discenable & devinfo.target_mask);
578
579 if (quirks & SDEV_NOTAGS0x0008)
580 tstate->tagenable &= ~devinfo.target_mask;
581 else if (ahd->user_tagenable & devinfo.target_mask)
582 tstate->tagenable |= devinfo.target_mask;
583
584 if (quirks & SDEV_NOWIDE0x0004)
585 width = MSG_EXT_WDTR_BUS_8_BIT0x00;
586 else
587 width = MSG_EXT_WDTR_BUS_16_BIT0x01;
588
589 ahd_validate_width(ahd, NULL((void *)0), &width, ROLE_UNKNOWN);
590 if (width > tinfo->user.width)
591 width = tinfo->user.width;
592 ahd_set_width(ahd, &devinfo, width, AHD_TRANS_GOAL0x04, FALSE0);
593
594 if (quirks & SDEV_NOSYNC0x0002) {
595 period = 0;
596 offset = 0;
597 } else {
598 period = tinfo->user.period;
599 offset = tinfo->user.offset;
600 }
601
602 /* XXX Look at saved INQUIRY flags for PPR capabilities XXX */
603 ppr_options = tinfo->user.ppr_options;
604 /* XXX Other reasons to avoid ppr? XXX */
605 if (width < MSG_EXT_WDTR_BUS_16_BIT0x01)
606 ppr_options = 0;
607
608 if ((tstate->discenable & devinfo.target_mask) == 0 ||
609 (tstate->tagenable & devinfo.target_mask) == 0)
610 ppr_options &= ~MSG_EXT_PPR_PROT_IUS0x01;
611
612 ahd_find_syncrate(ahd, &period, &ppr_options, AHD_SYNCRATE_MAX0x8);
613 ahd_validate_offset(ahd, NULL((void *)0), period, &offset, width, ROLE_UNKNOWN);
614
615 if (offset == 0) {
616 period = 0;
617 ppr_options = 0;
618 }
619
620 if (ppr_options != 0 && tinfo->user.transport_version >= 3) {
621 tinfo->goal.transport_version = tinfo->user.transport_version;
622 tinfo->curr.transport_version = tinfo->user.transport_version;
623 }
624
625 ahd_set_syncrate(ahd, &devinfo, period, offset, ppr_options,
626 AHD_TRANS_GOAL0x04, FALSE0);
627
628 splx(s)spllower(s);
629}
630
631void
632aic_timer_reset(aic_timer_t *timer, u_int msec, ahd_callback_t *func,
633 void *arg)
634{
635 uint64_t nticks;
636
637 nticks = msec;
638 nticks *= hz;
639 nticks /= 1000;
640 callout_reset(timer, nticks, func, arg)do { if (!(((timer))->to_flags & 0x04)) timeout_set((timer
), (func), (arg)); timeout_add((timer), (nticks)); } while (0
);
641}
642
643void
644aic_scb_timer_reset(struct scb *scb, u_int msec)
645{
646 uint64_t nticks;
647
648 nticks = msec;
649 nticks *= hz;
650 nticks /= 1000;
651 if (!(scb->xs->xs_controlflags & XS_CTL_POLL0x00002))
652 callout_reset(&scb->xs->xs_callout, nticks, ahd_timeout, scb)do { if (!(((&scb->xs->stimeout))->to_flags &
0x04)) timeout_set((&scb->xs->stimeout), (ahd_timeout
), (scb)); timeout_add((&scb->xs->stimeout), (nticks
)); } while (0);
653}
654
655void
656ahd_flush_device_writes(struct ahd_softc *ahd)
657{
658 /* XXX Is this sufficient for all architectures??? */
659 ahd_inb(ahd, INTSTAT)(((ahd)->tags[(0x01) >> 8])->read_1(((ahd)->bshs
[(0x01) >> 8]), ((0x01) & 0xFF)));
660}
661
662void
663aic_platform_scb_free(struct ahd_softc *ahd, struct scb *scb)
664{
665 int s;
666
667 ahd_lock(ahd, &s)*(&s) = splraise(0x6);
668
669 if ((ahd->flags & AHD_RESOURCE_SHORTAGE) != 0) {
670 ahd->flags &= ~AHD_RESOURCE_SHORTAGE;
671 }
672
673 if (!cold) {
674 /* we are no longer in autoconf */
675 timeout_del(&scb->xs->stimeout);
676 }
677
678 ahd_unlock(ahd, &s)spllower(*(&s));
679}
680
681void
682ahd_print_path(struct ahd_softc *ahd, struct scb *scb)
683{
684 sc_print_addr(scb->xs->sc_link);
685}
686
687void
688ahd_platform_dump_card_state(struct ahd_softc *ahd)
689{
690 /* Nothing to do here for OpenBSD */
691 printf("FEATURES = 0x%x, FLAGS = 0x%x, CHIP = 0x%x BUGS =0x%x\n",
692 ahd->features, ahd->flags, ahd->chip, ahd->bugs);
693}
694