1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2001 Michael Smith
5 * Copyright (c) 2004 Paul Saab
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 *
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * SUCH DAMAGE.
28 *
29 * $FreeBSD$
30 */
31
32 /*
33 * Common Interface for SCSI-3 Support driver.
34 *
35 * CISS claims to provide a common interface between a generic SCSI
36 * transport and an intelligent host adapter.
37 *
38 * This driver supports CISS as defined in the document "CISS Command
39 * Interface for SCSI-3 Support Open Specification", Version 1.04,
40 * Valence Number 1, dated 20001127, produced by Compaq Computer
41 * Corporation. This document appears to be a hastily and somewhat
42 * arbitrarlily cut-down version of a larger (and probably even more
43 * chaotic and inconsistent) Compaq internal document. Various
44 * details were also gleaned from Compaq's "cciss" driver for Linux.
45 *
46 * We provide a shim layer between the CISS interface and CAM,
47 * offloading most of the queueing and being-a-disk chores onto CAM.
48 * Entry to the driver is via the PCI bus attachment (ciss_probe,
49 * ciss_attach, etc) and via the CAM interface (ciss_cam_action,
50 * ciss_cam_poll). The Compaq CISS adapters are, however, poor SCSI
51 * citizens and we have to fake up some responses to get reasonable
52 * behaviour out of them. In addition, the CISS command set is by no
53 * means adequate to support the functionality of a RAID controller,
54 * and thus the supported Compaq adapters utilise portions of the
55 * control protocol from earlier Compaq adapter families.
56 *
57 * Note that we only support the "simple" transport layer over PCI.
58 * This interface (ab)uses the I2O register set (specifically the post
59 * queues) to exchange commands with the adapter. Other interfaces
60 * are available, but we aren't supposed to know about them, and it is
61 * dubious whether they would provide major performance improvements
62 * except under extreme load.
63 *
64 * Currently the only supported CISS adapters are the Compaq Smart
65 * Array 5* series (5300, 5i, 532). Even with only three adapters,
66 * Compaq still manage to have interface variations.
67 *
68 *
69 * Thanks must go to Fred Harris and Darryl DeVinney at Compaq, as
70 * well as Paul Saab at Yahoo! for their assistance in making this
71 * driver happen.
72 *
73 * More thanks must go to John Cagle at HP for the countless hours
74 * spent making this driver "work" with the MSA* series storage
75 * enclosures. Without his help (and nagging), this driver could not
76 * be used with these enclosures.
77 */
78
79 #include <sys/param.h>
80 #include <sys/systm.h>
81 #include <sys/malloc.h>
82 #include <sys/kernel.h>
83 #include <sys/bus.h>
84 #include <sys/conf.h>
85 #include <sys/stat.h>
86 #include <sys/kthread.h>
87 #include <sys/queue.h>
88 #include <sys/sysctl.h>
89
90 #include <cam/cam.h>
91 #include <cam/cam_ccb.h>
92 #include <cam/cam_periph.h>
93 #include <cam/cam_sim.h>
94 #include <cam/cam_xpt_sim.h>
95 #include <cam/scsi/scsi_all.h>
96 #include <cam/scsi/scsi_message.h>
97
98 #include <machine/bus.h>
99 #include <machine/endian.h>
100 #include <machine/resource.h>
101 #include <sys/rman.h>
102
103 #include <dev/pci/pcireg.h>
104 #include <dev/pci/pcivar.h>
105
106 #include <dev/ciss/cissreg.h>
107 #include <dev/ciss/cissio.h>
108 #include <dev/ciss/cissvar.h>
109
110 #ifdef CISS_DEBUG
111 #include "opt_ddb.h"
112 #endif
113
114 static MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data",
115 "ciss internal data buffers");
116
117 /* pci interface */
118 static int ciss_lookup(device_t dev);
119 static int ciss_probe(device_t dev);
120 static int ciss_attach(device_t dev);
121 static int ciss_detach(device_t dev);
122 static int ciss_shutdown(device_t dev);
123
124 /* (de)initialisation functions, control wrappers */
125 static int ciss_init_pci(struct ciss_softc *sc);
126 static int ciss_setup_msix(struct ciss_softc *sc);
127 static int ciss_init_perf(struct ciss_softc *sc);
128 static int ciss_wait_adapter(struct ciss_softc *sc);
129 static int ciss_flush_adapter(struct ciss_softc *sc);
130 static int ciss_init_requests(struct ciss_softc *sc);
131 static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs,
132 int nseg, int error);
133 static int ciss_identify_adapter(struct ciss_softc *sc);
134 static int ciss_init_logical(struct ciss_softc *sc);
135 static int ciss_init_physical(struct ciss_softc *sc);
136 static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll);
137 static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld);
138 static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld);
139 static int ciss_update_config(struct ciss_softc *sc);
140 static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld);
141 static void ciss_init_sysctl(struct ciss_softc *sc);
142 static void ciss_soft_reset(struct ciss_softc *sc);
143 static void ciss_free(struct ciss_softc *sc);
144 static void ciss_spawn_notify_thread(struct ciss_softc *sc);
145 static void ciss_kill_notify_thread(struct ciss_softc *sc);
146
147 /* request submission/completion */
148 static int ciss_start(struct ciss_request *cr);
149 static void ciss_done(struct ciss_softc *sc, cr_qhead_t *qh);
150 static void ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh);
151 static void ciss_intr(void *arg);
152 static void ciss_perf_intr(void *arg);
153 static void ciss_perf_msi_intr(void *arg);
154 static void ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh);
155 static int _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func);
156 static int ciss_synch_request(struct ciss_request *cr, int timeout);
157 static int ciss_poll_request(struct ciss_request *cr, int timeout);
158 static int ciss_wait_request(struct ciss_request *cr, int timeout);
159 #if 0
160 static int ciss_abort_request(struct ciss_request *cr);
161 #endif
162
163 /* request queueing */
164 static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp);
165 static void ciss_preen_command(struct ciss_request *cr);
166 static void ciss_release_request(struct ciss_request *cr);
167
168 /* request helpers */
169 static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
170 int opcode, void **bufp, size_t bufsize);
171 static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc);
172
173 /* DMA map/unmap */
174 static int ciss_map_request(struct ciss_request *cr);
175 static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs,
176 int nseg, int error);
177 static void ciss_unmap_request(struct ciss_request *cr);
178
179 /* CAM interface */
180 static int ciss_cam_init(struct ciss_softc *sc);
181 static void ciss_cam_rescan_target(struct ciss_softc *sc,
182 int bus, int target);
183 static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb);
184 static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
185 static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio);
186 static void ciss_cam_poll(struct cam_sim *sim);
187 static void ciss_cam_complete(struct ciss_request *cr);
188 static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio);
189 static int ciss_name_device(struct ciss_softc *sc, int bus, int target);
190
191 /* periodic status monitoring */
192 static void ciss_periodic(void *arg);
193 static void ciss_nop_complete(struct ciss_request *cr);
194 static void ciss_disable_adapter(struct ciss_softc *sc);
195 static void ciss_notify_event(struct ciss_softc *sc);
196 static void ciss_notify_complete(struct ciss_request *cr);
197 static int ciss_notify_abort(struct ciss_softc *sc);
198 static int ciss_notify_abort_bmic(struct ciss_softc *sc);
199 static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn);
200 static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn);
201 static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn);
202
203 /* debugging output */
204 #ifdef DDB
205 static void ciss_print_request(struct ciss_request *cr);
206 #endif
207 static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld);
208 static const char *ciss_name_ldrive_status(int status);
209 static int ciss_decode_ldrive_status(int status);
210 static const char *ciss_name_ldrive_org(int org);
211 static const char *ciss_name_command_status(int status);
212
213 /*
214 * PCI bus interface.
215 */
216 static device_method_t ciss_methods[] = {
217 /* Device interface */
218 DEVMETHOD(device_probe, ciss_probe),
219 DEVMETHOD(device_attach, ciss_attach),
220 DEVMETHOD(device_detach, ciss_detach),
221 DEVMETHOD(device_shutdown, ciss_shutdown),
222 { 0, 0 }
223 };
224
225 static driver_t ciss_pci_driver = {
226 "ciss",
227 ciss_methods,
228 sizeof(struct ciss_softc)
229 };
230
231 /*
232 * Control device interface.
233 */
234 static d_open_t ciss_open;
235 static d_close_t ciss_close;
236 static d_ioctl_t ciss_ioctl;
237
238 static struct cdevsw ciss_cdevsw = {
239 .d_version = D_VERSION,
240 .d_flags = 0,
241 .d_open = ciss_open,
242 .d_close = ciss_close,
243 .d_ioctl = ciss_ioctl,
244 .d_name = "ciss",
245 };
246
247 /*
248 * This tunable can be set at boot time and controls whether physical devices
249 * that are marked hidden by the firmware should be exposed anyways.
250 */
251 static unsigned int ciss_expose_hidden_physical = 0;
252 TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical);
253
254 static unsigned int ciss_nop_message_heartbeat = 0;
255 TUNABLE_INT("hw.ciss.nop_message_heartbeat", &ciss_nop_message_heartbeat);
256
257 /*
258 * This tunable can force a particular transport to be used:
259 * <= 0 : use default
260 * 1 : force simple
261 * 2 : force performant
262 */
263 static int ciss_force_transport = 0;
264 TUNABLE_INT("hw.ciss.force_transport", &ciss_force_transport);
265
266 /*
267 * This tunable can force a particular interrupt delivery method to be used:
268 * <= 0 : use default
269 * 1 : force INTx
270 * 2 : force MSIX
271 */
272 static int ciss_force_interrupt = 0;
273 TUNABLE_INT("hw.ciss.force_interrupt", &ciss_force_interrupt);
274
275 /************************************************************************
276 * CISS adapters amazingly don't have a defined programming interface
277 * value. (One could say some very despairing things about PCI and
278 * people just not getting the general idea.) So we are forced to
279 * stick with matching against subvendor/subdevice, and thus have to
280 * be updated for every new CISS adapter that appears.
281 */
282 #define CISS_BOARD_UNKNWON 0
283 #define CISS_BOARD_SA5 1
284 #define CISS_BOARD_SA5B 2
285 #define CISS_BOARD_NOMSI (1<<4)
286 #define CISS_BOARD_SIMPLE (1<<5)
287
288 static struct
289 {
290 u_int16_t subvendor;
291 u_int16_t subdevice;
292 int flags;
293 char *desc;
294 } ciss_vendor_data[] = {
295 { 0x0e11, 0x4070, CISS_BOARD_SA5|CISS_BOARD_NOMSI|CISS_BOARD_SIMPLE,
296 "Compaq Smart Array 5300" },
297 { 0x0e11, 0x4080, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "Compaq Smart Array 5i" },
298 { 0x0e11, 0x4082, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "Compaq Smart Array 532" },
299 { 0x0e11, 0x4083, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "HP Smart Array 5312" },
300 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" },
301 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" },
302 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" },
303 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" },
304 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" },
305 { 0x103C, 0x3211, CISS_BOARD_SA5, "HP Smart Array E200i" },
306 { 0x103C, 0x3212, CISS_BOARD_SA5, "HP Smart Array E200" },
307 { 0x103C, 0x3213, CISS_BOARD_SA5, "HP Smart Array E200i" },
308 { 0x103C, 0x3214, CISS_BOARD_SA5, "HP Smart Array E200i" },
309 { 0x103C, 0x3215, CISS_BOARD_SA5, "HP Smart Array E200i" },
310 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" },
311 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" },
312 { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" },
313 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" },
314 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" },
315 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" },
316 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" },
317 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" },
318 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array P400" },
319 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array P400i" },
320 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" },
321 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array E500" },
322 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" },
323 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" },
324 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" },
325 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" },
326 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" },
327 { 0x103C, 0x323D, CISS_BOARD_SA5, "HP Smart Array P700m" },
328 { 0x103C, 0x3241, CISS_BOARD_SA5, "HP Smart Array P212" },
329 { 0x103C, 0x3243, CISS_BOARD_SA5, "HP Smart Array P410" },
330 { 0x103C, 0x3245, CISS_BOARD_SA5, "HP Smart Array P410i" },
331 { 0x103C, 0x3247, CISS_BOARD_SA5, "HP Smart Array P411" },
332 { 0x103C, 0x3249, CISS_BOARD_SA5, "HP Smart Array P812" },
333 { 0x103C, 0x324A, CISS_BOARD_SA5, "HP Smart Array P712m" },
334 { 0x103C, 0x324B, CISS_BOARD_SA5, "HP Smart Array" },
335 { 0x103C, 0x3350, CISS_BOARD_SA5, "HP Smart Array P222" },
336 { 0x103C, 0x3351, CISS_BOARD_SA5, "HP Smart Array P420" },
337 { 0x103C, 0x3352, CISS_BOARD_SA5, "HP Smart Array P421" },
338 { 0x103C, 0x3353, CISS_BOARD_SA5, "HP Smart Array P822" },
339 { 0x103C, 0x3354, CISS_BOARD_SA5, "HP Smart Array P420i" },
340 { 0x103C, 0x3355, CISS_BOARD_SA5, "HP Smart Array P220i" },
341 { 0x103C, 0x3356, CISS_BOARD_SA5, "HP Smart Array P721m" },
342 { 0x103C, 0x1920, CISS_BOARD_SA5, "HP Smart Array P430i" },
343 { 0x103C, 0x1921, CISS_BOARD_SA5, "HP Smart Array P830i" },
344 { 0x103C, 0x1922, CISS_BOARD_SA5, "HP Smart Array P430" },
345 { 0x103C, 0x1923, CISS_BOARD_SA5, "HP Smart Array P431" },
346 { 0x103C, 0x1924, CISS_BOARD_SA5, "HP Smart Array P830" },
347 { 0x103C, 0x1926, CISS_BOARD_SA5, "HP Smart Array P731m" },
348 { 0x103C, 0x1928, CISS_BOARD_SA5, "HP Smart Array P230i" },
349 { 0x103C, 0x1929, CISS_BOARD_SA5, "HP Smart Array P530" },
350 { 0x103C, 0x192A, CISS_BOARD_SA5, "HP Smart Array P531" },
351 { 0x103C, 0x21BD, CISS_BOARD_SA5, "HP Smart Array P244br" },
352 { 0x103C, 0x21BE, CISS_BOARD_SA5, "HP Smart Array P741m" },
353 { 0x103C, 0x21BF, CISS_BOARD_SA5, "HP Smart Array H240ar" },
354 { 0x103C, 0x21C0, CISS_BOARD_SA5, "HP Smart Array P440ar" },
355 { 0x103C, 0x21C1, CISS_BOARD_SA5, "HP Smart Array P840ar" },
356 { 0x103C, 0x21C2, CISS_BOARD_SA5, "HP Smart Array P440" },
357 { 0x103C, 0x21C3, CISS_BOARD_SA5, "HP Smart Array P441" },
358 { 0x103C, 0x21C5, CISS_BOARD_SA5, "HP Smart Array P841" },
359 { 0x103C, 0x21C6, CISS_BOARD_SA5, "HP Smart Array H244br" },
360 { 0x103C, 0x21C7, CISS_BOARD_SA5, "HP Smart Array H240" },
361 { 0x103C, 0x21C8, CISS_BOARD_SA5, "HP Smart Array H241" },
362 { 0x103C, 0x21CA, CISS_BOARD_SA5, "HP Smart Array P246br" },
363 { 0x103C, 0x21CB, CISS_BOARD_SA5, "HP Smart Array P840" },
364 { 0x103C, 0x21CC, CISS_BOARD_SA5, "HP Smart Array P542d" },
365 { 0x103C, 0x21CD, CISS_BOARD_SA5, "HP Smart Array P240nr" },
366 { 0x103C, 0x21CE, CISS_BOARD_SA5, "HP Smart Array H240nr" },
367 { 0, 0, 0, NULL }
368 };
369
370 static devclass_t ciss_devclass;
371 DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0);
372 MODULE_PNP_INFO("U16:vendor;U16:device;", pci, ciss, ciss_vendor_data,
373 nitems(ciss_vendor_data) - 1);
374 MODULE_DEPEND(ciss, cam, 1, 1, 1);
375 MODULE_DEPEND(ciss, pci, 1, 1, 1);
376
377 /************************************************************************
378 * Find a match for the device in our list of known adapters.
379 */
380 static int
ciss_lookup(device_t dev)381 ciss_lookup(device_t dev)
382 {
383 int i;
384
385 for (i = 0; ciss_vendor_data[i].desc != NULL; i++)
386 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) &&
387 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) {
388 return(i);
389 }
390 return(-1);
391 }
392
393 /************************************************************************
394 * Match a known CISS adapter.
395 */
396 static int
ciss_probe(device_t dev)397 ciss_probe(device_t dev)
398 {
399 int i;
400
401 i = ciss_lookup(dev);
402 if (i != -1) {
403 device_set_desc(dev, ciss_vendor_data[i].desc);
404 return(BUS_PROBE_DEFAULT);
405 }
406 return(ENOENT);
407 }
408
409 /************************************************************************
410 * Attach the driver to this adapter.
411 */
412 static int
ciss_attach(device_t dev)413 ciss_attach(device_t dev)
414 {
415 struct ciss_softc *sc;
416 int error;
417
418 debug_called(1);
419
420 #ifdef CISS_DEBUG
421 /* print structure/union sizes */
422 debug_struct(ciss_command);
423 debug_struct(ciss_header);
424 debug_union(ciss_device_address);
425 debug_struct(ciss_cdb);
426 debug_struct(ciss_report_cdb);
427 debug_struct(ciss_notify_cdb);
428 debug_struct(ciss_notify);
429 debug_struct(ciss_message_cdb);
430 debug_struct(ciss_error_info_pointer);
431 debug_struct(ciss_error_info);
432 debug_struct(ciss_sg_entry);
433 debug_struct(ciss_config_table);
434 debug_struct(ciss_bmic_cdb);
435 debug_struct(ciss_bmic_id_ldrive);
436 debug_struct(ciss_bmic_id_lstatus);
437 debug_struct(ciss_bmic_id_table);
438 debug_struct(ciss_bmic_id_pdrive);
439 debug_struct(ciss_bmic_blink_pdrive);
440 debug_struct(ciss_bmic_flush_cache);
441 debug_const(CISS_MAX_REQUESTS);
442 debug_const(CISS_MAX_LOGICAL);
443 debug_const(CISS_INTERRUPT_COALESCE_DELAY);
444 debug_const(CISS_INTERRUPT_COALESCE_COUNT);
445 debug_const(CISS_COMMAND_ALLOC_SIZE);
446 debug_const(CISS_COMMAND_SG_LENGTH);
447
448 debug_type(cciss_pci_info_struct);
449 debug_type(cciss_coalint_struct);
450 debug_type(cciss_coalint_struct);
451 debug_type(NodeName_type);
452 debug_type(NodeName_type);
453 debug_type(Heartbeat_type);
454 debug_type(BusTypes_type);
455 debug_type(FirmwareVer_type);
456 debug_type(DriverVer_type);
457 debug_type(IOCTL_Command_struct);
458 #endif
459
460 sc = device_get_softc(dev);
461 sc->ciss_dev = dev;
462 mtx_init(&sc->ciss_mtx, "cissmtx", NULL, MTX_DEF);
463 callout_init_mtx(&sc->ciss_periodic, &sc->ciss_mtx, 0);
464
465 /*
466 * Do PCI-specific init.
467 */
468 if ((error = ciss_init_pci(sc)) != 0)
469 goto out;
470
471 /*
472 * Initialise driver queues.
473 */
474 ciss_initq_free(sc);
475 ciss_initq_notify(sc);
476
477 /*
478 * Initialize device sysctls.
479 */
480 ciss_init_sysctl(sc);
481
482 /*
483 * Initialise command/request pool.
484 */
485 if ((error = ciss_init_requests(sc)) != 0)
486 goto out;
487
488 /*
489 * Get adapter information.
490 */
491 if ((error = ciss_identify_adapter(sc)) != 0)
492 goto out;
493
494 /*
495 * Find all the physical devices.
496 */
497 if ((error = ciss_init_physical(sc)) != 0)
498 goto out;
499
500 /*
501 * Build our private table of logical devices.
502 */
503 if ((error = ciss_init_logical(sc)) != 0)
504 goto out;
505
506 /*
507 * Enable interrupts so that the CAM scan can complete.
508 */
509 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc);
510
511 /*
512 * Initialise the CAM interface.
513 */
514 if ((error = ciss_cam_init(sc)) != 0)
515 goto out;
516
517 /*
518 * Start the heartbeat routine and event chain.
519 */
520 ciss_periodic(sc);
521
522 /*
523 * Create the control device.
524 */
525 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev),
526 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
527 "ciss%d", device_get_unit(sc->ciss_dev));
528 sc->ciss_dev_t->si_drv1 = sc;
529
530 /*
531 * The adapter is running; synchronous commands can now sleep
532 * waiting for an interrupt to signal completion.
533 */
534 sc->ciss_flags |= CISS_FLAG_RUNNING;
535
536 ciss_spawn_notify_thread(sc);
537
538 error = 0;
539 out:
540 if (error != 0) {
541 /* ciss_free() expects the mutex to be held */
542 mtx_lock(&sc->ciss_mtx);
543 ciss_free(sc);
544 }
545 return(error);
546 }
547
548 /************************************************************************
549 * Detach the driver from this adapter.
550 */
551 static int
ciss_detach(device_t dev)552 ciss_detach(device_t dev)
553 {
554 struct ciss_softc *sc = device_get_softc(dev);
555
556 debug_called(1);
557
558 mtx_lock(&sc->ciss_mtx);
559 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) {
560 mtx_unlock(&sc->ciss_mtx);
561 return (EBUSY);
562 }
563
564 /* flush adapter cache */
565 ciss_flush_adapter(sc);
566
567 /* release all resources. The mutex is released and freed here too. */
568 ciss_free(sc);
569
570 return(0);
571 }
572
573 /************************************************************************
574 * Prepare adapter for system shutdown.
575 */
576 static int
ciss_shutdown(device_t dev)577 ciss_shutdown(device_t dev)
578 {
579 struct ciss_softc *sc = device_get_softc(dev);
580
581 debug_called(1);
582
583 mtx_lock(&sc->ciss_mtx);
584 /* flush adapter cache */
585 ciss_flush_adapter(sc);
586
587 if (sc->ciss_soft_reset)
588 ciss_soft_reset(sc);
589 mtx_unlock(&sc->ciss_mtx);
590
591 return(0);
592 }
593
594 static void
ciss_init_sysctl(struct ciss_softc * sc)595 ciss_init_sysctl(struct ciss_softc *sc)
596 {
597
598 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev),
599 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)),
600 OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, "");
601 }
602
603 /************************************************************************
604 * Perform PCI-specific attachment actions.
605 */
606 static int
ciss_init_pci(struct ciss_softc * sc)607 ciss_init_pci(struct ciss_softc *sc)
608 {
609 uintptr_t cbase, csize, cofs;
610 uint32_t method, supported_methods;
611 int error, sqmask, i;
612 void *intr;
613
614 debug_called(1);
615
616 /*
617 * Work out adapter type.
618 */
619 i = ciss_lookup(sc->ciss_dev);
620 if (i < 0) {
621 ciss_printf(sc, "unknown adapter type\n");
622 return (ENXIO);
623 }
624
625 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) {
626 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5;
627 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) {
628 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5B;
629 } else {
630 /*
631 * XXX Big hammer, masks/unmasks all possible interrupts. This should
632 * work on all hardware variants. Need to add code to handle the
633 * "controller crashed" interrupt bit that this unmasks.
634 */
635 sqmask = ~0;
636 }
637
638 /*
639 * Allocate register window first (we need this to find the config
640 * struct).
641 */
642 error = ENXIO;
643 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS;
644 if ((sc->ciss_regs_resource =
645 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
646 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) {
647 ciss_printf(sc, "can't allocate register window\n");
648 return(ENXIO);
649 }
650 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource);
651 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource);
652
653 /*
654 * Find the BAR holding the config structure. If it's not the one
655 * we already mapped for registers, map it too.
656 */
657 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff;
658 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) {
659 if ((sc->ciss_cfg_resource =
660 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
661 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) {
662 ciss_printf(sc, "can't allocate config window\n");
663 return(ENXIO);
664 }
665 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource);
666 csize = rman_get_end(sc->ciss_cfg_resource) -
667 rman_get_start(sc->ciss_cfg_resource) + 1;
668 } else {
669 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource);
670 csize = rman_get_end(sc->ciss_regs_resource) -
671 rman_get_start(sc->ciss_regs_resource) + 1;
672 }
673 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF);
674
675 /*
676 * Use the base/size/offset values we just calculated to
677 * sanity-check the config structure. If it's OK, point to it.
678 */
679 if ((cofs + sizeof(struct ciss_config_table)) > csize) {
680 ciss_printf(sc, "config table outside window\n");
681 return(ENXIO);
682 }
683 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs);
684 debug(1, "config struct at %p", sc->ciss_cfg);
685
686 /*
687 * Calculate the number of request structures/commands we are
688 * going to provide for this adapter.
689 */
690 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands);
691
692 /*
693 * Validate the config structure. If we supported other transport
694 * methods, we could select amongst them at this point in time.
695 */
696 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) {
697 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n",
698 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1],
699 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]);
700 return(ENXIO);
701 }
702
703 /*
704 * Select the mode of operation, prefer Performant.
705 */
706 if (!(sc->ciss_cfg->supported_methods &
707 (CISS_TRANSPORT_METHOD_SIMPLE | CISS_TRANSPORT_METHOD_PERF))) {
708 ciss_printf(sc, "No supported transport layers: 0x%x\n",
709 sc->ciss_cfg->supported_methods);
710 }
711
712 switch (ciss_force_transport) {
713 case 1:
714 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
715 break;
716 case 2:
717 supported_methods = CISS_TRANSPORT_METHOD_PERF;
718 break;
719 default:
720 /*
721 * Override the capabilities of the BOARD and specify SIMPLE
722 * MODE
723 */
724 if (ciss_vendor_data[i].flags & CISS_BOARD_SIMPLE)
725 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
726 else
727 supported_methods = sc->ciss_cfg->supported_methods;
728 break;
729 }
730
731 setup:
732 if ((supported_methods & CISS_TRANSPORT_METHOD_PERF) != 0) {
733 method = CISS_TRANSPORT_METHOD_PERF;
734 sc->ciss_perf = (struct ciss_perf_config *)(cbase + cofs +
735 sc->ciss_cfg->transport_offset);
736 if (ciss_init_perf(sc)) {
737 supported_methods &= ~method;
738 goto setup;
739 }
740 } else if (supported_methods & CISS_TRANSPORT_METHOD_SIMPLE) {
741 method = CISS_TRANSPORT_METHOD_SIMPLE;
742 } else {
743 ciss_printf(sc, "No supported transport methods: 0x%x\n",
744 sc->ciss_cfg->supported_methods);
745 return(ENXIO);
746 }
747
748 /*
749 * Tell it we're using the low 4GB of RAM. Set the default interrupt
750 * coalescing options.
751 */
752 sc->ciss_cfg->requested_method = method;
753 sc->ciss_cfg->command_physlimit = 0;
754 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY;
755 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT;
756
757 #ifdef __i386__
758 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH;
759 #endif
760
761 if (ciss_update_config(sc)) {
762 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n",
763 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR));
764 return(ENXIO);
765 }
766 if ((sc->ciss_cfg->active_method & method) == 0) {
767 supported_methods &= ~method;
768 if (supported_methods == 0) {
769 ciss_printf(sc, "adapter refuses to go into available transports "
770 "mode (0x%x, 0x%x)\n", supported_methods,
771 sc->ciss_cfg->active_method);
772 return(ENXIO);
773 } else
774 goto setup;
775 }
776
777 /*
778 * Wait for the adapter to come ready.
779 */
780 if ((error = ciss_wait_adapter(sc)) != 0)
781 return(error);
782
783 /* Prepare to possibly use MSIX and/or PERFORMANT interrupts. Normal
784 * interrupts have a rid of 0, this will be overridden if MSIX is used.
785 */
786 sc->ciss_irq_rid[0] = 0;
787 if (method == CISS_TRANSPORT_METHOD_PERF) {
788 ciss_printf(sc, "PERFORMANT Transport\n");
789 if ((ciss_force_interrupt != 1) && (ciss_setup_msix(sc) == 0)) {
790 intr = ciss_perf_msi_intr;
791 } else {
792 intr = ciss_perf_intr;
793 }
794 /* XXX The docs say that the 0x01 bit is only for SAS controllers.
795 * Unfortunately, there is no good way to know if this is a SAS
796 * controller. Hopefully enabling this bit universally will work OK.
797 * It seems to work fine for SA6i controllers.
798 */
799 sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_OPQ | CISS_TL_PERF_INTR_MSI;
800
801 } else {
802 ciss_printf(sc, "SIMPLE Transport\n");
803 /* MSIX doesn't seem to work in SIMPLE mode, only enable if it forced */
804 if (ciss_force_interrupt == 2)
805 /* If this fails, we automatically revert to INTx */
806 ciss_setup_msix(sc);
807 sc->ciss_perf = NULL;
808 intr = ciss_intr;
809 sc->ciss_interrupt_mask = sqmask;
810 }
811
812 /*
813 * Turn off interrupts before we go routing anything.
814 */
815 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
816
817 /*
818 * Allocate and set up our interrupt.
819 */
820 if ((sc->ciss_irq_resource =
821 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid[0],
822 RF_ACTIVE | RF_SHAREABLE)) == NULL) {
823 ciss_printf(sc, "can't allocate interrupt\n");
824 return(ENXIO);
825 }
826
827 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource,
828 INTR_TYPE_CAM|INTR_MPSAFE, NULL, intr, sc,
829 &sc->ciss_intr)) {
830 ciss_printf(sc, "can't set up interrupt\n");
831 return(ENXIO);
832 }
833
834 /*
835 * Allocate the parent bus DMA tag appropriate for our PCI
836 * interface.
837 *
838 * Note that "simple" adapters can only address within a 32-bit
839 * span.
840 */
841 if (bus_dma_tag_create(bus_get_dma_tag(sc->ciss_dev),/* PCI parent */
842 1, 0, /* alignment, boundary */
843 BUS_SPACE_MAXADDR, /* lowaddr */
844 BUS_SPACE_MAXADDR, /* highaddr */
845 NULL, NULL, /* filter, filterarg */
846 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
847 BUS_SPACE_UNRESTRICTED, /* nsegments */
848 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
849 0, /* flags */
850 NULL, NULL, /* lockfunc, lockarg */
851 &sc->ciss_parent_dmat)) {
852 ciss_printf(sc, "can't allocate parent DMA tag\n");
853 return(ENOMEM);
854 }
855
856 /*
857 * Create DMA tag for mapping buffers into adapter-addressable
858 * space.
859 */
860 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
861 1, 0, /* alignment, boundary */
862 BUS_SPACE_MAXADDR, /* lowaddr */
863 BUS_SPACE_MAXADDR, /* highaddr */
864 NULL, NULL, /* filter, filterarg */
865 (CISS_MAX_SG_ELEMENTS - 1) * PAGE_SIZE, /* maxsize */
866 CISS_MAX_SG_ELEMENTS, /* nsegments */
867 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
868 BUS_DMA_ALLOCNOW, /* flags */
869 busdma_lock_mutex, &sc->ciss_mtx, /* lockfunc, lockarg */
870 &sc->ciss_buffer_dmat)) {
871 ciss_printf(sc, "can't allocate buffer DMA tag\n");
872 return(ENOMEM);
873 }
874 return(0);
875 }
876
877 /************************************************************************
878 * Setup MSI/MSIX operation (Performant only)
879 * Four interrupts are available, but we only use 1 right now. If MSI-X
880 * isn't avaialble, try using MSI instead.
881 */
882 static int
ciss_setup_msix(struct ciss_softc * sc)883 ciss_setup_msix(struct ciss_softc *sc)
884 {
885 int val, i;
886
887 /* Weed out devices that don't actually support MSI */
888 i = ciss_lookup(sc->ciss_dev);
889 if (ciss_vendor_data[i].flags & CISS_BOARD_NOMSI)
890 return (EINVAL);
891
892 /*
893 * Only need to use the minimum number of MSI vectors, as the driver
894 * doesn't support directed MSIX interrupts.
895 */
896 val = pci_msix_count(sc->ciss_dev);
897 if (val < CISS_MSI_COUNT) {
898 val = pci_msi_count(sc->ciss_dev);
899 device_printf(sc->ciss_dev, "got %d MSI messages]\n", val);
900 if (val < CISS_MSI_COUNT)
901 return (EINVAL);
902 }
903 val = MIN(val, CISS_MSI_COUNT);
904 if (pci_alloc_msix(sc->ciss_dev, &val) != 0) {
905 if (pci_alloc_msi(sc->ciss_dev, &val) != 0)
906 return (EINVAL);
907 }
908
909 sc->ciss_msi = val;
910 if (bootverbose)
911 ciss_printf(sc, "Using %d MSIX interrupt%s\n", val,
912 (val != 1) ? "s" : "");
913
914 for (i = 0; i < val; i++)
915 sc->ciss_irq_rid[i] = i + 1;
916
917 return (0);
918
919 }
920
921 /************************************************************************
922 * Setup the Performant structures.
923 */
924 static int
ciss_init_perf(struct ciss_softc * sc)925 ciss_init_perf(struct ciss_softc *sc)
926 {
927 struct ciss_perf_config *pc = sc->ciss_perf;
928 int reply_size;
929
930 /*
931 * Create the DMA tag for the reply queue.
932 */
933 reply_size = sizeof(uint64_t) * sc->ciss_max_requests;
934 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
935 1, 0, /* alignment, boundary */
936 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
937 BUS_SPACE_MAXADDR, /* highaddr */
938 NULL, NULL, /* filter, filterarg */
939 reply_size, 1, /* maxsize, nsegments */
940 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
941 0, /* flags */
942 NULL, NULL, /* lockfunc, lockarg */
943 &sc->ciss_reply_dmat)) {
944 ciss_printf(sc, "can't allocate reply DMA tag\n");
945 return(ENOMEM);
946 }
947 /*
948 * Allocate memory and make it available for DMA.
949 */
950 if (bus_dmamem_alloc(sc->ciss_reply_dmat, (void **)&sc->ciss_reply,
951 BUS_DMA_NOWAIT, &sc->ciss_reply_map)) {
952 ciss_printf(sc, "can't allocate reply memory\n");
953 return(ENOMEM);
954 }
955 bus_dmamap_load(sc->ciss_reply_dmat, sc->ciss_reply_map, sc->ciss_reply,
956 reply_size, ciss_command_map_helper, &sc->ciss_reply_phys, 0);
957 bzero(sc->ciss_reply, reply_size);
958
959 sc->ciss_cycle = 0x1;
960 sc->ciss_rqidx = 0;
961
962 /*
963 * Preload the fetch table with common command sizes. This allows the
964 * hardware to not waste bus cycles for typical i/o commands, but also not
965 * tax the driver to be too exact in choosing sizes. The table is optimized
966 * for page-aligned i/o's, but since most i/o comes from the various pagers,
967 * it's a reasonable assumption to make.
968 */
969 pc->fetch_count[CISS_SG_FETCH_NONE] = (sizeof(struct ciss_command) + 15) / 16;
970 pc->fetch_count[CISS_SG_FETCH_1] =
971 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 1 + 15) / 16;
972 pc->fetch_count[CISS_SG_FETCH_2] =
973 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 2 + 15) / 16;
974 pc->fetch_count[CISS_SG_FETCH_4] =
975 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 4 + 15) / 16;
976 pc->fetch_count[CISS_SG_FETCH_8] =
977 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 8 + 15) / 16;
978 pc->fetch_count[CISS_SG_FETCH_16] =
979 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 16 + 15) / 16;
980 pc->fetch_count[CISS_SG_FETCH_32] =
981 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 32 + 15) / 16;
982 pc->fetch_count[CISS_SG_FETCH_MAX] = (CISS_COMMAND_ALLOC_SIZE + 15) / 16;
983
984 pc->rq_size = sc->ciss_max_requests; /* XXX less than the card supports? */
985 pc->rq_count = 1; /* XXX Hardcode for a single queue */
986 pc->rq_bank_hi = 0;
987 pc->rq_bank_lo = 0;
988 pc->rq[0].rq_addr_hi = 0x0;
989 pc->rq[0].rq_addr_lo = sc->ciss_reply_phys;
990
991 return(0);
992 }
993
994 /************************************************************************
995 * Wait for the adapter to come ready.
996 */
997 static int
ciss_wait_adapter(struct ciss_softc * sc)998 ciss_wait_adapter(struct ciss_softc *sc)
999 {
1000 int i;
1001
1002 debug_called(1);
1003
1004 /*
1005 * Wait for the adapter to come ready.
1006 */
1007 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) {
1008 ciss_printf(sc, "waiting for adapter to come ready...\n");
1009 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) {
1010 DELAY(1000000); /* one second */
1011 if (i > 30) {
1012 ciss_printf(sc, "timed out waiting for adapter to come ready\n");
1013 return(EIO);
1014 }
1015 }
1016 }
1017 return(0);
1018 }
1019
1020 /************************************************************************
1021 * Flush the adapter cache.
1022 */
1023 static int
ciss_flush_adapter(struct ciss_softc * sc)1024 ciss_flush_adapter(struct ciss_softc *sc)
1025 {
1026 struct ciss_request *cr;
1027 struct ciss_bmic_flush_cache *cbfc;
1028 int error, command_status;
1029
1030 debug_called(1);
1031
1032 cr = NULL;
1033 cbfc = NULL;
1034
1035 /*
1036 * Build a BMIC request to flush the cache. We don't disable
1037 * it, as we may be going to do more I/O (eg. we are emulating
1038 * the Synchronise Cache command).
1039 */
1040 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
1041 error = ENOMEM;
1042 goto out;
1043 }
1044 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE,
1045 (void **)&cbfc, sizeof(*cbfc))) != 0)
1046 goto out;
1047
1048 /*
1049 * Submit the request and wait for it to complete.
1050 */
1051 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1052 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error);
1053 goto out;
1054 }
1055
1056 /*
1057 * Check response.
1058 */
1059 ciss_report_request(cr, &command_status, NULL);
1060 switch(command_status) {
1061 case CISS_CMD_STATUS_SUCCESS:
1062 break;
1063 default:
1064 ciss_printf(sc, "error flushing cache (%s)\n",
1065 ciss_name_command_status(command_status));
1066 error = EIO;
1067 goto out;
1068 }
1069
1070 out:
1071 if (cbfc != NULL)
1072 free(cbfc, CISS_MALLOC_CLASS);
1073 if (cr != NULL)
1074 ciss_release_request(cr);
1075 return(error);
1076 }
1077
1078 static void
ciss_soft_reset(struct ciss_softc * sc)1079 ciss_soft_reset(struct ciss_softc *sc)
1080 {
1081 struct ciss_request *cr = NULL;
1082 struct ciss_command *cc;
1083 int i, error = 0;
1084
1085 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1086 /* only reset proxy controllers */
1087 if (sc->ciss_controllers[i].physical.bus == 0)
1088 continue;
1089
1090 if ((error = ciss_get_request(sc, &cr)) != 0)
1091 break;
1092
1093 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET,
1094 NULL, 0)) != 0)
1095 break;
1096
1097 cc = cr->cr_cc;
1098 cc->header.address = sc->ciss_controllers[i];
1099
1100 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0)
1101 break;
1102
1103 ciss_release_request(cr);
1104 }
1105
1106 if (error)
1107 ciss_printf(sc, "error resetting controller (%d)\n", error);
1108
1109 if (cr != NULL)
1110 ciss_release_request(cr);
1111 }
1112
1113 /************************************************************************
1114 * Allocate memory for the adapter command structures, initialise
1115 * the request structures.
1116 *
1117 * Note that the entire set of commands are allocated in a single
1118 * contiguous slab.
1119 */
1120 static int
ciss_init_requests(struct ciss_softc * sc)1121 ciss_init_requests(struct ciss_softc *sc)
1122 {
1123 struct ciss_request *cr;
1124 int i;
1125
1126 debug_called(1);
1127
1128 if (bootverbose)
1129 ciss_printf(sc, "using %d of %d available commands\n",
1130 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands);
1131
1132 /*
1133 * Create the DMA tag for commands.
1134 */
1135 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
1136 32, 0, /* alignment, boundary */
1137 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1138 BUS_SPACE_MAXADDR, /* highaddr */
1139 NULL, NULL, /* filter, filterarg */
1140 CISS_COMMAND_ALLOC_SIZE *
1141 sc->ciss_max_requests, 1, /* maxsize, nsegments */
1142 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1143 0, /* flags */
1144 NULL, NULL, /* lockfunc, lockarg */
1145 &sc->ciss_command_dmat)) {
1146 ciss_printf(sc, "can't allocate command DMA tag\n");
1147 return(ENOMEM);
1148 }
1149 /*
1150 * Allocate memory and make it available for DMA.
1151 */
1152 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command,
1153 BUS_DMA_NOWAIT, &sc->ciss_command_map)) {
1154 ciss_printf(sc, "can't allocate command memory\n");
1155 return(ENOMEM);
1156 }
1157 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map,sc->ciss_command,
1158 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests,
1159 ciss_command_map_helper, &sc->ciss_command_phys, 0);
1160 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests);
1161
1162 /*
1163 * Set up the request and command structures, push requests onto
1164 * the free queue.
1165 */
1166 for (i = 1; i < sc->ciss_max_requests; i++) {
1167 cr = &sc->ciss_request[i];
1168 cr->cr_sc = sc;
1169 cr->cr_tag = i;
1170 cr->cr_cc = (struct ciss_command *)((uintptr_t)sc->ciss_command +
1171 CISS_COMMAND_ALLOC_SIZE * i);
1172 cr->cr_ccphys = sc->ciss_command_phys + CISS_COMMAND_ALLOC_SIZE * i;
1173 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap);
1174 ciss_enqueue_free(cr);
1175 }
1176 return(0);
1177 }
1178
1179 static void
ciss_command_map_helper(void * arg,bus_dma_segment_t * segs,int nseg,int error)1180 ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1181 {
1182 uint32_t *addr;
1183
1184 addr = arg;
1185 *addr = segs[0].ds_addr;
1186 }
1187
1188 /************************************************************************
1189 * Identify the adapter, print some information about it.
1190 */
1191 static int
ciss_identify_adapter(struct ciss_softc * sc)1192 ciss_identify_adapter(struct ciss_softc *sc)
1193 {
1194 struct ciss_request *cr;
1195 int error, command_status;
1196
1197 debug_called(1);
1198
1199 cr = NULL;
1200
1201 /*
1202 * Get a request, allocate storage for the adapter data.
1203 */
1204 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR,
1205 (void **)&sc->ciss_id,
1206 sizeof(*sc->ciss_id))) != 0)
1207 goto out;
1208
1209 /*
1210 * Submit the request and wait for it to complete.
1211 */
1212 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1213 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error);
1214 goto out;
1215 }
1216
1217 /*
1218 * Check response.
1219 */
1220 ciss_report_request(cr, &command_status, NULL);
1221 switch(command_status) {
1222 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1223 break;
1224 case CISS_CMD_STATUS_DATA_UNDERRUN:
1225 case CISS_CMD_STATUS_DATA_OVERRUN:
1226 ciss_printf(sc, "data over/underrun reading adapter information\n");
1227 default:
1228 ciss_printf(sc, "error reading adapter information (%s)\n",
1229 ciss_name_command_status(command_status));
1230 error = EIO;
1231 goto out;
1232 }
1233
1234 /* sanity-check reply */
1235 if (!(sc->ciss_id->controller_flags & CONTROLLER_FLAGS_BIG_MAP_SUPPORT)) {
1236 ciss_printf(sc, "adapter does not support BIG_MAP\n");
1237 error = ENXIO;
1238 goto out;
1239 }
1240
1241 #if 0
1242 /* XXX later revisions may not need this */
1243 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH;
1244 #endif
1245
1246 /* XXX only really required for old 5300 adapters? */
1247 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT;
1248
1249 /*
1250 * Earlier controller specs do not contain these config
1251 * entries, so assume that a 0 means its old and assign
1252 * these values to the defaults that were established
1253 * when this driver was developed for them
1254 */
1255 if (sc->ciss_cfg->max_logical_supported == 0)
1256 sc->ciss_cfg->max_logical_supported = CISS_MAX_LOGICAL;
1257 if (sc->ciss_cfg->max_physical_supported == 0)
1258 sc->ciss_cfg->max_physical_supported = CISS_MAX_PHYSICAL;
1259 /* print information */
1260 if (bootverbose) {
1261 ciss_printf(sc, " %d logical drive%s configured\n",
1262 sc->ciss_id->configured_logical_drives,
1263 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s");
1264 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision);
1265 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_chip_count);
1266
1267 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature);
1268 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence);
1269 ciss_printf(sc, " supported I/O methods 0x%b\n",
1270 sc->ciss_cfg->supported_methods,
1271 "\20\1READY\2simple\3performant\4MEMQ\n");
1272 ciss_printf(sc, " active I/O method 0x%b\n",
1273 sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n");
1274 ciss_printf(sc, " 4G page base 0x%08x\n",
1275 sc->ciss_cfg->command_physlimit);
1276 ciss_printf(sc, " interrupt coalesce delay %dus\n",
1277 sc->ciss_cfg->interrupt_coalesce_delay);
1278 ciss_printf(sc, " interrupt coalesce count %d\n",
1279 sc->ciss_cfg->interrupt_coalesce_count);
1280 ciss_printf(sc, " max outstanding commands %d\n",
1281 sc->ciss_cfg->max_outstanding_commands);
1282 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types,
1283 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n");
1284 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name);
1285 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat);
1286 ciss_printf(sc, " max logical volumes: %d\n", sc->ciss_cfg->max_logical_supported);
1287 ciss_printf(sc, " max physical disks supported: %d\n", sc->ciss_cfg->max_physical_supported);
1288 ciss_printf(sc, " max physical disks per logical volume: %d\n", sc->ciss_cfg->max_physical_per_logical);
1289 ciss_printf(sc, " JBOD Support is %s\n", (sc->ciss_id->uiYetMoreControllerFlags & YMORE_CONTROLLER_FLAGS_JBOD_SUPPORTED) ?
1290 "Available" : "Unavailable");
1291 ciss_printf(sc, " JBOD Mode is %s\n", (sc->ciss_id->PowerUPNvramFlags & PWR_UP_FLAG_JBOD_ENABLED) ?
1292 "Enabled" : "Disabled");
1293 }
1294
1295 out:
1296 if (error) {
1297 if (sc->ciss_id != NULL) {
1298 free(sc->ciss_id, CISS_MALLOC_CLASS);
1299 sc->ciss_id = NULL;
1300 }
1301 }
1302 if (cr != NULL)
1303 ciss_release_request(cr);
1304 return(error);
1305 }
1306
1307 /************************************************************************
1308 * Helper routine for generating a list of logical and physical luns.
1309 */
1310 static struct ciss_lun_report *
ciss_report_luns(struct ciss_softc * sc,int opcode,int nunits)1311 ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits)
1312 {
1313 struct ciss_request *cr;
1314 struct ciss_command *cc;
1315 struct ciss_report_cdb *crc;
1316 struct ciss_lun_report *cll;
1317 int command_status;
1318 int report_size;
1319 int error = 0;
1320
1321 debug_called(1);
1322
1323 cr = NULL;
1324 cll = NULL;
1325
1326 /*
1327 * Get a request, allocate storage for the address list.
1328 */
1329 if ((error = ciss_get_request(sc, &cr)) != 0)
1330 goto out;
1331 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address);
1332 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
1333 ciss_printf(sc, "can't allocate memory for lun report\n");
1334 error = ENOMEM;
1335 goto out;
1336 }
1337
1338 /*
1339 * Build the Report Logical/Physical LUNs command.
1340 */
1341 cc = cr->cr_cc;
1342 cr->cr_data = cll;
1343 cr->cr_length = report_size;
1344 cr->cr_flags = CISS_REQ_DATAIN;
1345
1346 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
1347 cc->header.address.physical.bus = 0;
1348 cc->header.address.physical.target = 0;
1349 cc->cdb.cdb_length = sizeof(*crc);
1350 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1351 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1352 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1353 cc->cdb.timeout = 30; /* XXX better suggestions? */
1354
1355 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]);
1356 bzero(crc, sizeof(*crc));
1357 crc->opcode = opcode;
1358 crc->length = htonl(report_size); /* big-endian field */
1359 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */
1360
1361 /*
1362 * Submit the request and wait for it to complete. (timeout
1363 * here should be much greater than above)
1364 */
1365 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1366 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error);
1367 goto out;
1368 }
1369
1370 /*
1371 * Check response. Note that data over/underrun is OK.
1372 */
1373 ciss_report_request(cr, &command_status, NULL);
1374 switch(command_status) {
1375 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1376 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */
1377 break;
1378 case CISS_CMD_STATUS_DATA_OVERRUN:
1379 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n",
1380 sc->ciss_cfg->max_logical_supported);
1381 break;
1382 default:
1383 ciss_printf(sc, "error detecting logical drive configuration (%s)\n",
1384 ciss_name_command_status(command_status));
1385 error = EIO;
1386 goto out;
1387 }
1388 ciss_release_request(cr);
1389 cr = NULL;
1390
1391 out:
1392 if (cr != NULL)
1393 ciss_release_request(cr);
1394 if (error && cll != NULL) {
1395 free(cll, CISS_MALLOC_CLASS);
1396 cll = NULL;
1397 }
1398 return(cll);
1399 }
1400
1401 /************************************************************************
1402 * Find logical drives on the adapter.
1403 */
1404 static int
ciss_init_logical(struct ciss_softc * sc)1405 ciss_init_logical(struct ciss_softc *sc)
1406 {
1407 struct ciss_lun_report *cll;
1408 int error = 0, i, j;
1409 int ndrives;
1410
1411 debug_called(1);
1412
1413 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
1414 sc->ciss_cfg->max_logical_supported);
1415 if (cll == NULL) {
1416 error = ENXIO;
1417 goto out;
1418 }
1419
1420 /* sanity-check reply */
1421 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1422 if ((ndrives < 0) || (ndrives > sc->ciss_cfg->max_logical_supported)) {
1423 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n",
1424 ndrives, sc->ciss_cfg->max_logical_supported);
1425 error = ENXIO;
1426 goto out;
1427 }
1428
1429 /*
1430 * Save logical drive information.
1431 */
1432 if (bootverbose) {
1433 ciss_printf(sc, "%d logical drive%s\n",
1434 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : "");
1435 }
1436
1437 sc->ciss_logical =
1438 malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *),
1439 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1440 if (sc->ciss_logical == NULL) {
1441 error = ENXIO;
1442 goto out;
1443 }
1444
1445 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1446 sc->ciss_logical[i] =
1447 malloc(sc->ciss_cfg->max_logical_supported *
1448 sizeof(struct ciss_ldrive),
1449 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1450 if (sc->ciss_logical[i] == NULL) {
1451 error = ENXIO;
1452 goto out;
1453 }
1454
1455 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++)
1456 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT;
1457 }
1458
1459 for (i = 0; i < sc->ciss_cfg->max_logical_supported; i++) {
1460 if (i < ndrives) {
1461 struct ciss_ldrive *ld;
1462 int bus, target;
1463
1464 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
1465 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
1466 ld = &sc->ciss_logical[bus][target];
1467
1468 ld->cl_address = cll->lun[i];
1469 ld->cl_controller = &sc->ciss_controllers[bus];
1470 if (ciss_identify_logical(sc, ld) != 0)
1471 continue;
1472 /*
1473 * If the drive has had media exchanged, we should bring it online.
1474 */
1475 if (ld->cl_lstatus->media_exchanged)
1476 ciss_accept_media(sc, ld);
1477 }
1478 }
1479
1480 out:
1481 if (cll != NULL)
1482 free(cll, CISS_MALLOC_CLASS);
1483 return(error);
1484 }
1485
1486 static int
ciss_init_physical(struct ciss_softc * sc)1487 ciss_init_physical(struct ciss_softc *sc)
1488 {
1489 struct ciss_lun_report *cll;
1490 int error = 0, i;
1491 int nphys;
1492 int bus, target;
1493
1494 debug_called(1);
1495
1496 bus = 0;
1497 target = 0;
1498
1499 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
1500 sc->ciss_cfg->max_physical_supported);
1501 if (cll == NULL) {
1502 error = ENXIO;
1503 goto out;
1504 }
1505
1506 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1507
1508 if (bootverbose) {
1509 ciss_printf(sc, "%d physical device%s\n",
1510 nphys, (nphys > 1 || nphys == 0) ? "s" : "");
1511 }
1512
1513 /*
1514 * Figure out the bus mapping.
1515 * Logical buses include both the local logical bus for local arrays and
1516 * proxy buses for remote arrays. Physical buses are numbered by the
1517 * controller and represent physical buses that hold physical devices.
1518 * We shift these bus numbers so that everything fits into a single flat
1519 * numbering space for CAM. Logical buses occupy the first 32 CAM bus
1520 * numbers, and the physical bus numbers are shifted to be above that.
1521 * This results in the various driver arrays being indexed as follows:
1522 *
1523 * ciss_controllers[] - indexed by logical bus
1524 * ciss_cam_sim[] - indexed by both logical and physical, with physical
1525 * being shifted by 32.
1526 * ciss_logical[][] - indexed by logical bus
1527 * ciss_physical[][] - indexed by physical bus
1528 *
1529 * XXX This is getting more and more hackish. CISS really doesn't play
1530 * well with a standard SCSI model; devices are addressed via magic
1531 * cookies, not via b/t/l addresses. Since there is no way to store
1532 * the cookie in the CAM device object, we have to keep these lookup
1533 * tables handy so that the devices can be found quickly at the cost
1534 * of wasting memory and having a convoluted lookup scheme. This
1535 * driver should probably be converted to block interface.
1536 */
1537 /*
1538 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy
1539 * controller. A proxy controller is another physical controller
1540 * behind the primary PCI controller. We need to know about this
1541 * so that BMIC commands can be properly targeted. There can be
1542 * proxy controllers attached to a single PCI controller, so
1543 * find the highest numbered one so the array can be properly
1544 * sized.
1545 */
1546 sc->ciss_max_logical_bus = 1;
1547 for (i = 0; i < nphys; i++) {
1548 if (cll->lun[i].physical.extra_address == 0) {
1549 bus = cll->lun[i].physical.bus;
1550 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1;
1551 } else {
1552 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address);
1553 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus);
1554 }
1555 }
1556
1557 sc->ciss_controllers =
1558 malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address),
1559 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1560
1561 if (sc->ciss_controllers == NULL) {
1562 ciss_printf(sc, "Could not allocate memory for controller map\n");
1563 error = ENOMEM;
1564 goto out;
1565 }
1566
1567 /* setup a map of controller addresses */
1568 for (i = 0; i < nphys; i++) {
1569 if (cll->lun[i].physical.extra_address == 0) {
1570 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i];
1571 }
1572 }
1573
1574 sc->ciss_physical =
1575 malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *),
1576 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1577 if (sc->ciss_physical == NULL) {
1578 ciss_printf(sc, "Could not allocate memory for physical device map\n");
1579 error = ENOMEM;
1580 goto out;
1581 }
1582
1583 for (i = 0; i < sc->ciss_max_physical_bus; i++) {
1584 sc->ciss_physical[i] =
1585 malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT,
1586 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1587 if (sc->ciss_physical[i] == NULL) {
1588 ciss_printf(sc, "Could not allocate memory for target map\n");
1589 error = ENOMEM;
1590 goto out;
1591 }
1592 }
1593
1594 ciss_filter_physical(sc, cll);
1595
1596 out:
1597 if (cll != NULL)
1598 free(cll, CISS_MALLOC_CLASS);
1599
1600 return(error);
1601 }
1602
1603 static int
ciss_filter_physical(struct ciss_softc * sc,struct ciss_lun_report * cll)1604 ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll)
1605 {
1606 u_int32_t ea;
1607 int i, nphys;
1608 int bus, target;
1609
1610 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1611 for (i = 0; i < nphys; i++) {
1612 if (cll->lun[i].physical.extra_address == 0)
1613 continue;
1614
1615 /*
1616 * Filter out devices that we don't want. Level 3 LUNs could
1617 * probably be supported, but the docs don't give enough of a
1618 * hint to know how.
1619 *
1620 * The mode field of the physical address is likely set to have
1621 * hard disks masked out. Honor it unless the user has overridden
1622 * us with the tunable. We also munge the inquiry data for these
1623 * disks so that they only show up as passthrough devices. Keeping
1624 * them visible in this fashion is useful for doing things like
1625 * flashing firmware.
1626 */
1627 ea = cll->lun[i].physical.extra_address;
1628 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) ||
1629 (CISS_EXTRA_MODE2(ea) == 0x3))
1630 continue;
1631 if ((ciss_expose_hidden_physical == 0) &&
1632 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL))
1633 continue;
1634
1635 /*
1636 * Note: CISS firmware numbers physical busses starting at '1', not
1637 * '0'. This numbering is internal to the firmware and is only
1638 * used as a hint here.
1639 */
1640 bus = CISS_EXTRA_BUS2(ea) - 1;
1641 target = CISS_EXTRA_TARGET2(ea);
1642 sc->ciss_physical[bus][target].cp_address = cll->lun[i];
1643 sc->ciss_physical[bus][target].cp_online = 1;
1644 }
1645
1646 return (0);
1647 }
1648
1649 static int
ciss_inquiry_logical(struct ciss_softc * sc,struct ciss_ldrive * ld)1650 ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1651 {
1652 struct ciss_request *cr;
1653 struct ciss_command *cc;
1654 struct scsi_inquiry *inq;
1655 int error;
1656 int command_status;
1657
1658 cr = NULL;
1659
1660 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry));
1661
1662 if ((error = ciss_get_request(sc, &cr)) != 0)
1663 goto out;
1664
1665 cc = cr->cr_cc;
1666 cr->cr_data = &ld->cl_geometry;
1667 cr->cr_length = sizeof(ld->cl_geometry);
1668 cr->cr_flags = CISS_REQ_DATAIN;
1669
1670 cc->header.address = ld->cl_address;
1671 cc->cdb.cdb_length = 6;
1672 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1673 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1674 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1675 cc->cdb.timeout = 30;
1676
1677 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]);
1678 inq->opcode = INQUIRY;
1679 inq->byte2 = SI_EVPD;
1680 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY;
1681 scsi_ulto2b(sizeof(ld->cl_geometry), inq->length);
1682
1683 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1684 ciss_printf(sc, "error getting geometry (%d)\n", error);
1685 goto out;
1686 }
1687
1688 ciss_report_request(cr, &command_status, NULL);
1689 switch(command_status) {
1690 case CISS_CMD_STATUS_SUCCESS:
1691 case CISS_CMD_STATUS_DATA_UNDERRUN:
1692 break;
1693 case CISS_CMD_STATUS_DATA_OVERRUN:
1694 ciss_printf(sc, "WARNING: Data overrun\n");
1695 break;
1696 default:
1697 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n",
1698 ciss_name_command_status(command_status));
1699 break;
1700 }
1701
1702 out:
1703 if (cr != NULL)
1704 ciss_release_request(cr);
1705 return(error);
1706 }
1707 /************************************************************************
1708 * Identify a logical drive, initialise state related to it.
1709 */
1710 static int
ciss_identify_logical(struct ciss_softc * sc,struct ciss_ldrive * ld)1711 ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1712 {
1713 struct ciss_request *cr;
1714 struct ciss_command *cc;
1715 struct ciss_bmic_cdb *cbc;
1716 int error, command_status;
1717
1718 debug_called(1);
1719
1720 cr = NULL;
1721
1722 /*
1723 * Build a BMIC request to fetch the drive ID.
1724 */
1725 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE,
1726 (void **)&ld->cl_ldrive,
1727 sizeof(*ld->cl_ldrive))) != 0)
1728 goto out;
1729 cc = cr->cr_cc;
1730 cc->header.address = *ld->cl_controller; /* target controller */
1731 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1732 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1733
1734 /*
1735 * Submit the request and wait for it to complete.
1736 */
1737 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1738 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error);
1739 goto out;
1740 }
1741
1742 /*
1743 * Check response.
1744 */
1745 ciss_report_request(cr, &command_status, NULL);
1746 switch(command_status) {
1747 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1748 break;
1749 case CISS_CMD_STATUS_DATA_UNDERRUN:
1750 case CISS_CMD_STATUS_DATA_OVERRUN:
1751 ciss_printf(sc, "data over/underrun reading logical drive ID\n");
1752 default:
1753 ciss_printf(sc, "error reading logical drive ID (%s)\n",
1754 ciss_name_command_status(command_status));
1755 error = EIO;
1756 goto out;
1757 }
1758 ciss_release_request(cr);
1759 cr = NULL;
1760
1761 /*
1762 * Build a CISS BMIC command to get the logical drive status.
1763 */
1764 if ((error = ciss_get_ldrive_status(sc, ld)) != 0)
1765 goto out;
1766
1767 /*
1768 * Get the logical drive geometry.
1769 */
1770 if ((error = ciss_inquiry_logical(sc, ld)) != 0)
1771 goto out;
1772
1773 /*
1774 * Print the drive's basic characteristics.
1775 */
1776 if (bootverbose) {
1777 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ",
1778 CISS_LUN_TO_BUS(ld->cl_address.logical.lun),
1779 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun),
1780 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance),
1781 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) *
1782 ld->cl_ldrive->block_size));
1783
1784 ciss_print_ldrive(sc, ld);
1785 }
1786 out:
1787 if (error != 0) {
1788 /* make the drive not-exist */
1789 ld->cl_status = CISS_LD_NONEXISTENT;
1790 if (ld->cl_ldrive != NULL) {
1791 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
1792 ld->cl_ldrive = NULL;
1793 }
1794 if (ld->cl_lstatus != NULL) {
1795 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
1796 ld->cl_lstatus = NULL;
1797 }
1798 }
1799 if (cr != NULL)
1800 ciss_release_request(cr);
1801
1802 return(error);
1803 }
1804
1805 /************************************************************************
1806 * Get status for a logical drive.
1807 *
1808 * XXX should we also do this in response to Test Unit Ready?
1809 */
1810 static int
ciss_get_ldrive_status(struct ciss_softc * sc,struct ciss_ldrive * ld)1811 ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld)
1812 {
1813 struct ciss_request *cr;
1814 struct ciss_command *cc;
1815 struct ciss_bmic_cdb *cbc;
1816 int error, command_status;
1817
1818 /*
1819 * Build a CISS BMIC command to get the logical drive status.
1820 */
1821 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS,
1822 (void **)&ld->cl_lstatus,
1823 sizeof(*ld->cl_lstatus))) != 0)
1824 goto out;
1825 cc = cr->cr_cc;
1826 cc->header.address = *ld->cl_controller; /* target controller */
1827 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1828 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1829
1830 /*
1831 * Submit the request and wait for it to complete.
1832 */
1833 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1834 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error);
1835 goto out;
1836 }
1837
1838 /*
1839 * Check response.
1840 */
1841 ciss_report_request(cr, &command_status, NULL);
1842 switch(command_status) {
1843 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1844 break;
1845 case CISS_CMD_STATUS_DATA_UNDERRUN:
1846 case CISS_CMD_STATUS_DATA_OVERRUN:
1847 ciss_printf(sc, "data over/underrun reading logical drive status\n");
1848 default:
1849 ciss_printf(sc, "error reading logical drive status (%s)\n",
1850 ciss_name_command_status(command_status));
1851 error = EIO;
1852 goto out;
1853 }
1854
1855 /*
1856 * Set the drive's summary status based on the returned status.
1857 *
1858 * XXX testing shows that a failed JBOD drive comes back at next
1859 * boot in "queued for expansion" mode. WTF?
1860 */
1861 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status);
1862
1863 out:
1864 if (cr != NULL)
1865 ciss_release_request(cr);
1866 return(error);
1867 }
1868
1869 /************************************************************************
1870 * Notify the adapter of a config update.
1871 */
1872 static int
ciss_update_config(struct ciss_softc * sc)1873 ciss_update_config(struct ciss_softc *sc)
1874 {
1875 int i;
1876
1877 debug_called(1);
1878
1879 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE);
1880 for (i = 0; i < 1000; i++) {
1881 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) &
1882 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) {
1883 return(0);
1884 }
1885 DELAY(1000);
1886 }
1887 return(1);
1888 }
1889
1890 /************************************************************************
1891 * Accept new media into a logical drive.
1892 *
1893 * XXX The drive has previously been offline; it would be good if we
1894 * could make sure it's not open right now.
1895 */
1896 static int
ciss_accept_media(struct ciss_softc * sc,struct ciss_ldrive * ld)1897 ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld)
1898 {
1899 struct ciss_request *cr;
1900 struct ciss_command *cc;
1901 struct ciss_bmic_cdb *cbc;
1902 int command_status;
1903 int error = 0, ldrive;
1904
1905 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1906
1907 debug(0, "bringing logical drive %d back online", ldrive);
1908
1909 /*
1910 * Build a CISS BMIC command to bring the drive back online.
1911 */
1912 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA,
1913 NULL, 0)) != 0)
1914 goto out;
1915 cc = cr->cr_cc;
1916 cc->header.address = *ld->cl_controller; /* target controller */
1917 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1918 cbc->log_drive = ldrive;
1919
1920 /*
1921 * Submit the request and wait for it to complete.
1922 */
1923 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1924 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error);
1925 goto out;
1926 }
1927
1928 /*
1929 * Check response.
1930 */
1931 ciss_report_request(cr, &command_status, NULL);
1932 switch(command_status) {
1933 case CISS_CMD_STATUS_SUCCESS: /* all OK */
1934 /* we should get a logical drive status changed event here */
1935 break;
1936 default:
1937 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n",
1938 ciss_name_command_status(command_status));
1939 break;
1940 }
1941
1942 out:
1943 if (cr != NULL)
1944 ciss_release_request(cr);
1945 return(error);
1946 }
1947
1948 /************************************************************************
1949 * Release adapter resources.
1950 */
1951 static void
ciss_free(struct ciss_softc * sc)1952 ciss_free(struct ciss_softc *sc)
1953 {
1954 struct ciss_request *cr;
1955 int i, j;
1956
1957 debug_called(1);
1958
1959 /* we're going away */
1960 sc->ciss_flags |= CISS_FLAG_ABORTING;
1961
1962 /* terminate the periodic heartbeat routine */
1963 callout_stop(&sc->ciss_periodic);
1964
1965 /* cancel the Event Notify chain */
1966 ciss_notify_abort(sc);
1967
1968 ciss_kill_notify_thread(sc);
1969
1970 /* disconnect from CAM */
1971 if (sc->ciss_cam_sim) {
1972 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1973 if (sc->ciss_cam_sim[i]) {
1974 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1975 cam_sim_free(sc->ciss_cam_sim[i], 0);
1976 }
1977 }
1978 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
1979 CISS_PHYSICAL_BASE; i++) {
1980 if (sc->ciss_cam_sim[i]) {
1981 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1982 cam_sim_free(sc->ciss_cam_sim[i], 0);
1983 }
1984 }
1985 free(sc->ciss_cam_sim, CISS_MALLOC_CLASS);
1986 }
1987 if (sc->ciss_cam_devq)
1988 cam_simq_free(sc->ciss_cam_devq);
1989
1990 /* remove the control device */
1991 mtx_unlock(&sc->ciss_mtx);
1992 if (sc->ciss_dev_t != NULL)
1993 destroy_dev(sc->ciss_dev_t);
1994
1995 /* Final cleanup of the callout. */
1996 callout_drain(&sc->ciss_periodic);
1997 mtx_destroy(&sc->ciss_mtx);
1998
1999 /* free the controller data */
2000 if (sc->ciss_id != NULL)
2001 free(sc->ciss_id, CISS_MALLOC_CLASS);
2002
2003 /* release I/O resources */
2004 if (sc->ciss_regs_resource != NULL)
2005 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
2006 sc->ciss_regs_rid, sc->ciss_regs_resource);
2007 if (sc->ciss_cfg_resource != NULL)
2008 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
2009 sc->ciss_cfg_rid, sc->ciss_cfg_resource);
2010 if (sc->ciss_intr != NULL)
2011 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr);
2012 if (sc->ciss_irq_resource != NULL)
2013 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ,
2014 sc->ciss_irq_rid[0], sc->ciss_irq_resource);
2015 if (sc->ciss_msi)
2016 pci_release_msi(sc->ciss_dev);
2017
2018 while ((cr = ciss_dequeue_free(sc)) != NULL)
2019 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap);
2020 if (sc->ciss_buffer_dmat)
2021 bus_dma_tag_destroy(sc->ciss_buffer_dmat);
2022
2023 /* destroy command memory and DMA tag */
2024 if (sc->ciss_command != NULL) {
2025 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map);
2026 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map);
2027 }
2028 if (sc->ciss_command_dmat)
2029 bus_dma_tag_destroy(sc->ciss_command_dmat);
2030
2031 if (sc->ciss_reply) {
2032 bus_dmamap_unload(sc->ciss_reply_dmat, sc->ciss_reply_map);
2033 bus_dmamem_free(sc->ciss_reply_dmat, sc->ciss_reply, sc->ciss_reply_map);
2034 }
2035 if (sc->ciss_reply_dmat)
2036 bus_dma_tag_destroy(sc->ciss_reply_dmat);
2037
2038 /* destroy DMA tags */
2039 if (sc->ciss_parent_dmat)
2040 bus_dma_tag_destroy(sc->ciss_parent_dmat);
2041 if (sc->ciss_logical) {
2042 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2043 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
2044 if (sc->ciss_logical[i][j].cl_ldrive)
2045 free(sc->ciss_logical[i][j].cl_ldrive, CISS_MALLOC_CLASS);
2046 if (sc->ciss_logical[i][j].cl_lstatus)
2047 free(sc->ciss_logical[i][j].cl_lstatus, CISS_MALLOC_CLASS);
2048 }
2049 free(sc->ciss_logical[i], CISS_MALLOC_CLASS);
2050 }
2051 free(sc->ciss_logical, CISS_MALLOC_CLASS);
2052 }
2053
2054 if (sc->ciss_physical) {
2055 for (i = 0; i < sc->ciss_max_physical_bus; i++)
2056 free(sc->ciss_physical[i], CISS_MALLOC_CLASS);
2057 free(sc->ciss_physical, CISS_MALLOC_CLASS);
2058 }
2059
2060 if (sc->ciss_controllers)
2061 free(sc->ciss_controllers, CISS_MALLOC_CLASS);
2062
2063 }
2064
2065 /************************************************************************
2066 * Give a command to the adapter.
2067 *
2068 * Note that this uses the simple transport layer directly. If we
2069 * want to add support for other layers, we'll need a switch of some
2070 * sort.
2071 *
2072 * Note that the simple transport layer has no way of refusing a
2073 * command; we only have as many request structures as the adapter
2074 * supports commands, so we don't have to check (this presumes that
2075 * the adapter can handle commands as fast as we throw them at it).
2076 */
2077 static int
ciss_start(struct ciss_request * cr)2078 ciss_start(struct ciss_request *cr)
2079 {
2080 struct ciss_command *cc; /* XXX debugging only */
2081 int error;
2082
2083 cc = cr->cr_cc;
2084 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag);
2085
2086 /*
2087 * Map the request's data.
2088 */
2089 if ((error = ciss_map_request(cr)))
2090 return(error);
2091
2092 #if 0
2093 ciss_print_request(cr);
2094 #endif
2095
2096 return(0);
2097 }
2098
2099 /************************************************************************
2100 * Fetch completed request(s) from the adapter, queue them for
2101 * completion handling.
2102 *
2103 * Note that this uses the simple transport layer directly. If we
2104 * want to add support for other layers, we'll need a switch of some
2105 * sort.
2106 *
2107 * Note that the simple transport mechanism does not require any
2108 * reentrancy protection; the OPQ read is atomic. If there is a
2109 * chance of a race with something else that might move the request
2110 * off the busy list, then we will have to lock against that
2111 * (eg. timeouts, etc.)
2112 */
2113 static void
ciss_done(struct ciss_softc * sc,cr_qhead_t * qh)2114 ciss_done(struct ciss_softc *sc, cr_qhead_t *qh)
2115 {
2116 struct ciss_request *cr;
2117 struct ciss_command *cc;
2118 u_int32_t tag, index;
2119
2120 debug_called(3);
2121
2122 /*
2123 * Loop quickly taking requests from the adapter and moving them
2124 * to the completed queue.
2125 */
2126 for (;;) {
2127 tag = CISS_TL_SIMPLE_FETCH_CMD(sc);
2128 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY)
2129 break;
2130 index = tag >> 2;
2131 debug(2, "completed command %d%s", index,
2132 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2133 if (index >= sc->ciss_max_requests) {
2134 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2135 continue;
2136 }
2137 cr = &(sc->ciss_request[index]);
2138 cc = cr->cr_cc;
2139 cc->header.host_tag = tag; /* not updated by adapter */
2140 ciss_enqueue_complete(cr, qh);
2141 }
2142
2143 }
2144
2145 static void
ciss_perf_done(struct ciss_softc * sc,cr_qhead_t * qh)2146 ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh)
2147 {
2148 struct ciss_request *cr;
2149 struct ciss_command *cc;
2150 u_int32_t tag, index;
2151
2152 debug_called(3);
2153
2154 /*
2155 * Loop quickly taking requests from the adapter and moving them
2156 * to the completed queue.
2157 */
2158 for (;;) {
2159 tag = sc->ciss_reply[sc->ciss_rqidx];
2160 if ((tag & CISS_CYCLE_MASK) != sc->ciss_cycle)
2161 break;
2162 index = tag >> 2;
2163 debug(2, "completed command %d%s\n", index,
2164 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2165 if (index < sc->ciss_max_requests) {
2166 cr = &(sc->ciss_request[index]);
2167 cc = cr->cr_cc;
2168 cc->header.host_tag = tag; /* not updated by adapter */
2169 ciss_enqueue_complete(cr, qh);
2170 } else {
2171 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2172 }
2173 if (++sc->ciss_rqidx == sc->ciss_max_requests) {
2174 sc->ciss_rqidx = 0;
2175 sc->ciss_cycle ^= 1;
2176 }
2177 }
2178
2179 }
2180
2181 /************************************************************************
2182 * Take an interrupt from the adapter.
2183 */
2184 static void
ciss_intr(void * arg)2185 ciss_intr(void *arg)
2186 {
2187 cr_qhead_t qh;
2188 struct ciss_softc *sc = (struct ciss_softc *)arg;
2189
2190 /*
2191 * The only interrupt we recognise indicates that there are
2192 * entries in the outbound post queue.
2193 */
2194 STAILQ_INIT(&qh);
2195 ciss_done(sc, &qh);
2196 mtx_lock(&sc->ciss_mtx);
2197 ciss_complete(sc, &qh);
2198 mtx_unlock(&sc->ciss_mtx);
2199 }
2200
2201 static void
ciss_perf_intr(void * arg)2202 ciss_perf_intr(void *arg)
2203 {
2204 struct ciss_softc *sc = (struct ciss_softc *)arg;
2205
2206 /* Clear the interrupt and flush the bridges. Docs say that the flush
2207 * needs to be done twice, which doesn't seem right.
2208 */
2209 CISS_TL_PERF_CLEAR_INT(sc);
2210 CISS_TL_PERF_FLUSH_INT(sc);
2211
2212 ciss_perf_msi_intr(sc);
2213 }
2214
2215 static void
ciss_perf_msi_intr(void * arg)2216 ciss_perf_msi_intr(void *arg)
2217 {
2218 cr_qhead_t qh;
2219 struct ciss_softc *sc = (struct ciss_softc *)arg;
2220
2221 STAILQ_INIT(&qh);
2222 ciss_perf_done(sc, &qh);
2223 mtx_lock(&sc->ciss_mtx);
2224 ciss_complete(sc, &qh);
2225 mtx_unlock(&sc->ciss_mtx);
2226 }
2227
2228 /************************************************************************
2229 * Process completed requests.
2230 *
2231 * Requests can be completed in three fashions:
2232 *
2233 * - by invoking a callback function (cr_complete is non-null)
2234 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set)
2235 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context
2236 */
2237 static void
ciss_complete(struct ciss_softc * sc,cr_qhead_t * qh)2238 ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh)
2239 {
2240 struct ciss_request *cr;
2241
2242 debug_called(2);
2243
2244 /*
2245 * Loop taking requests off the completed queue and performing
2246 * completion processing on them.
2247 */
2248 for (;;) {
2249 if ((cr = ciss_dequeue_complete(sc, qh)) == NULL)
2250 break;
2251 ciss_unmap_request(cr);
2252
2253 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
2254 ciss_printf(sc, "WARNING: completing non-busy request\n");
2255 cr->cr_flags &= ~CISS_REQ_BUSY;
2256
2257 /*
2258 * If the request has a callback, invoke it.
2259 */
2260 if (cr->cr_complete != NULL) {
2261 cr->cr_complete(cr);
2262 continue;
2263 }
2264
2265 /*
2266 * If someone is sleeping on this request, wake them up.
2267 */
2268 if (cr->cr_flags & CISS_REQ_SLEEP) {
2269 cr->cr_flags &= ~CISS_REQ_SLEEP;
2270 wakeup(cr);
2271 continue;
2272 }
2273
2274 /*
2275 * If someone is polling this request for completion, signal.
2276 */
2277 if (cr->cr_flags & CISS_REQ_POLL) {
2278 cr->cr_flags &= ~CISS_REQ_POLL;
2279 continue;
2280 }
2281
2282 /*
2283 * Give up and throw the request back on the free queue. This
2284 * should never happen; resources will probably be lost.
2285 */
2286 ciss_printf(sc, "WARNING: completed command with no submitter\n");
2287 ciss_enqueue_free(cr);
2288 }
2289 }
2290
2291 /************************************************************************
2292 * Report on the completion status of a request, and pass back SCSI
2293 * and command status values.
2294 */
2295 static int
_ciss_report_request(struct ciss_request * cr,int * command_status,int * scsi_status,const char * func)2296 _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func)
2297 {
2298 struct ciss_command *cc;
2299 struct ciss_error_info *ce;
2300
2301 debug_called(2);
2302
2303 cc = cr->cr_cc;
2304 ce = (struct ciss_error_info *)&(cc->sg[0]);
2305
2306 /*
2307 * We don't consider data under/overrun an error for the Report
2308 * Logical/Physical LUNs commands.
2309 */
2310 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) &&
2311 ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) ||
2312 (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) &&
2313 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) ||
2314 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) ||
2315 (cc->cdb.cdb[0] == INQUIRY))) {
2316 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR;
2317 debug(2, "ignoring irrelevant under/overrun error");
2318 }
2319
2320 /*
2321 * Check the command's error bit, if clear, there's no status and
2322 * everything is OK.
2323 */
2324 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) {
2325 if (scsi_status != NULL)
2326 *scsi_status = SCSI_STATUS_OK;
2327 if (command_status != NULL)
2328 *command_status = CISS_CMD_STATUS_SUCCESS;
2329 return(0);
2330 } else {
2331 if (command_status != NULL)
2332 *command_status = ce->command_status;
2333 if (scsi_status != NULL) {
2334 if (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN) {
2335 *scsi_status = SCSI_STATUS_OK;
2336 } else if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) {
2337 *scsi_status = ce->scsi_status;
2338 } else {
2339 *scsi_status = -1;
2340 }
2341 }
2342 if (bootverbose && ce->command_status != CISS_CMD_STATUS_DATA_UNDERRUN)
2343 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n",
2344 ce->command_status, ciss_name_command_status(ce->command_status),
2345 ce->scsi_status);
2346 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) {
2347 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x, function %s\n",
2348 ce->additional_error_info.invalid_command.offense_size,
2349 ce->additional_error_info.invalid_command.offense_offset,
2350 ce->additional_error_info.invalid_command.offense_value,
2351 func);
2352 }
2353 }
2354 #if 0
2355 ciss_print_request(cr);
2356 #endif
2357 return(1);
2358 }
2359
2360 /************************************************************************
2361 * Issue a request and don't return until it's completed.
2362 *
2363 * Depending on adapter status, we may poll or sleep waiting for
2364 * completion.
2365 */
2366 static int
ciss_synch_request(struct ciss_request * cr,int timeout)2367 ciss_synch_request(struct ciss_request *cr, int timeout)
2368 {
2369 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) {
2370 return(ciss_wait_request(cr, timeout));
2371 } else {
2372 return(ciss_poll_request(cr, timeout));
2373 }
2374 }
2375
2376 /************************************************************************
2377 * Issue a request and poll for completion.
2378 *
2379 * Timeout in milliseconds.
2380 */
2381 static int
ciss_poll_request(struct ciss_request * cr,int timeout)2382 ciss_poll_request(struct ciss_request *cr, int timeout)
2383 {
2384 cr_qhead_t qh;
2385 struct ciss_softc *sc;
2386 int error;
2387
2388 debug_called(2);
2389
2390 STAILQ_INIT(&qh);
2391 sc = cr->cr_sc;
2392 cr->cr_flags |= CISS_REQ_POLL;
2393 if ((error = ciss_start(cr)) != 0)
2394 return(error);
2395
2396 do {
2397 if (sc->ciss_perf)
2398 ciss_perf_done(sc, &qh);
2399 else
2400 ciss_done(sc, &qh);
2401 ciss_complete(sc, &qh);
2402 if (!(cr->cr_flags & CISS_REQ_POLL))
2403 return(0);
2404 DELAY(1000);
2405 } while (timeout-- >= 0);
2406 return(EWOULDBLOCK);
2407 }
2408
2409 /************************************************************************
2410 * Issue a request and sleep waiting for completion.
2411 *
2412 * Timeout in milliseconds. Note that a spurious wakeup will reset
2413 * the timeout.
2414 */
2415 static int
ciss_wait_request(struct ciss_request * cr,int timeout)2416 ciss_wait_request(struct ciss_request *cr, int timeout)
2417 {
2418 int error;
2419
2420 debug_called(2);
2421
2422 cr->cr_flags |= CISS_REQ_SLEEP;
2423 if ((error = ciss_start(cr)) != 0)
2424 return(error);
2425
2426 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) {
2427 error = msleep_sbt(cr, &cr->cr_sc->ciss_mtx, PRIBIO, "cissREQ",
2428 SBT_1MS * timeout, 0, 0);
2429 }
2430 return(error);
2431 }
2432
2433 #if 0
2434 /************************************************************************
2435 * Abort a request. Note that a potential exists here to race the
2436 * request being completed; the caller must deal with this.
2437 */
2438 static int
2439 ciss_abort_request(struct ciss_request *ar)
2440 {
2441 struct ciss_request *cr;
2442 struct ciss_command *cc;
2443 struct ciss_message_cdb *cmc;
2444 int error;
2445
2446 debug_called(1);
2447
2448 /* get a request */
2449 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0)
2450 return(error);
2451
2452 /* build the abort command */
2453 cc = cr->cr_cc;
2454 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */
2455 cc->header.address.physical.target = 0;
2456 cc->header.address.physical.bus = 0;
2457 cc->cdb.cdb_length = sizeof(*cmc);
2458 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
2459 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2460 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
2461 cc->cdb.timeout = 30;
2462
2463 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]);
2464 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT;
2465 cmc->type = CISS_MESSAGE_ABORT_TASK;
2466 cmc->abort_tag = ar->cr_tag; /* endianness?? */
2467
2468 /*
2469 * Send the request and wait for a response. If we believe we
2470 * aborted the request OK, clear the flag that indicates it's
2471 * running.
2472 */
2473 error = ciss_synch_request(cr, 35 * 1000);
2474 if (!error)
2475 error = ciss_report_request(cr, NULL, NULL);
2476 ciss_release_request(cr);
2477
2478 return(error);
2479 }
2480 #endif
2481
2482 /************************************************************************
2483 * Fetch and initialise a request
2484 */
2485 static int
ciss_get_request(struct ciss_softc * sc,struct ciss_request ** crp)2486 ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp)
2487 {
2488 struct ciss_request *cr;
2489
2490 debug_called(2);
2491
2492 /*
2493 * Get a request and clean it up.
2494 */
2495 if ((cr = ciss_dequeue_free(sc)) == NULL)
2496 return(ENOMEM);
2497
2498 cr->cr_data = NULL;
2499 cr->cr_flags = 0;
2500 cr->cr_complete = NULL;
2501 cr->cr_private = NULL;
2502 cr->cr_sg_tag = CISS_SG_MAX; /* Backstop to prevent accidents */
2503
2504 ciss_preen_command(cr);
2505 *crp = cr;
2506 return(0);
2507 }
2508
2509 static void
ciss_preen_command(struct ciss_request * cr)2510 ciss_preen_command(struct ciss_request *cr)
2511 {
2512 struct ciss_command *cc;
2513 u_int32_t cmdphys;
2514
2515 /*
2516 * Clean up the command structure.
2517 *
2518 * Note that we set up the error_info structure here, since the
2519 * length can be overwritten by any command.
2520 */
2521 cc = cr->cr_cc;
2522 cc->header.sg_in_list = 0; /* kinda inefficient this way */
2523 cc->header.sg_total = 0;
2524 cc->header.host_tag = cr->cr_tag << 2;
2525 cc->header.host_tag_zeroes = 0;
2526 bzero(&(cc->sg[0]), CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command));
2527 cmdphys = cr->cr_ccphys;
2528 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command);
2529 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command);
2530 }
2531
2532 /************************************************************************
2533 * Release a request to the free list.
2534 */
2535 static void
ciss_release_request(struct ciss_request * cr)2536 ciss_release_request(struct ciss_request *cr)
2537 {
2538 struct ciss_softc *sc;
2539
2540 debug_called(2);
2541
2542 sc = cr->cr_sc;
2543
2544 /* release the request to the free queue */
2545 ciss_requeue_free(cr);
2546 }
2547
2548 /************************************************************************
2549 * Allocate a request that will be used to send a BMIC command. Do some
2550 * of the common setup here to avoid duplicating it everywhere else.
2551 */
2552 static int
ciss_get_bmic_request(struct ciss_softc * sc,struct ciss_request ** crp,int opcode,void ** bufp,size_t bufsize)2553 ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
2554 int opcode, void **bufp, size_t bufsize)
2555 {
2556 struct ciss_request *cr;
2557 struct ciss_command *cc;
2558 struct ciss_bmic_cdb *cbc;
2559 void *buf;
2560 int error;
2561 int dataout;
2562
2563 debug_called(2);
2564
2565 cr = NULL;
2566 buf = NULL;
2567
2568 /*
2569 * Get a request.
2570 */
2571 if ((error = ciss_get_request(sc, &cr)) != 0)
2572 goto out;
2573
2574 /*
2575 * Allocate data storage if requested, determine the data direction.
2576 */
2577 dataout = 0;
2578 if ((bufsize > 0) && (bufp != NULL)) {
2579 if (*bufp == NULL) {
2580 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
2581 error = ENOMEM;
2582 goto out;
2583 }
2584 } else {
2585 buf = *bufp;
2586 dataout = 1; /* we are given a buffer, so we are writing */
2587 }
2588 }
2589
2590 /*
2591 * Build a CISS BMIC command to get the logical drive ID.
2592 */
2593 cr->cr_data = buf;
2594 cr->cr_length = bufsize;
2595 if (!dataout)
2596 cr->cr_flags = CISS_REQ_DATAIN;
2597
2598 cc = cr->cr_cc;
2599 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
2600 cc->header.address.physical.bus = 0;
2601 cc->header.address.physical.target = 0;
2602 cc->cdb.cdb_length = sizeof(*cbc);
2603 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
2604 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2605 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ;
2606 cc->cdb.timeout = 0;
2607
2608 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
2609 bzero(cbc, sizeof(*cbc));
2610 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ;
2611 cbc->bmic_opcode = opcode;
2612 cbc->size = htons((u_int16_t)bufsize);
2613
2614 out:
2615 if (error) {
2616 if (cr != NULL)
2617 ciss_release_request(cr);
2618 } else {
2619 *crp = cr;
2620 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL))
2621 *bufp = buf;
2622 }
2623 return(error);
2624 }
2625
2626 /************************************************************************
2627 * Handle a command passed in from userspace.
2628 */
2629 static int
ciss_user_command(struct ciss_softc * sc,IOCTL_Command_struct * ioc)2630 ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc)
2631 {
2632 struct ciss_request *cr;
2633 struct ciss_command *cc;
2634 struct ciss_error_info *ce;
2635 int error = 0;
2636
2637 debug_called(1);
2638
2639 cr = NULL;
2640
2641 /*
2642 * Get a request.
2643 */
2644 while (ciss_get_request(sc, &cr) != 0)
2645 msleep(sc, &sc->ciss_mtx, PPAUSE, "cissREQ", hz);
2646 cc = cr->cr_cc;
2647
2648 /*
2649 * Allocate an in-kernel databuffer if required, copy in user data.
2650 */
2651 mtx_unlock(&sc->ciss_mtx);
2652 cr->cr_length = ioc->buf_size;
2653 if (ioc->buf_size > 0) {
2654 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
2655 error = ENOMEM;
2656 goto out_unlocked;
2657 }
2658 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) {
2659 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2660 goto out_unlocked;
2661 }
2662 }
2663
2664 /*
2665 * Build the request based on the user command.
2666 */
2667 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address));
2668 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb));
2669
2670 /* XXX anything else to populate here? */
2671 mtx_lock(&sc->ciss_mtx);
2672
2673 /*
2674 * Run the command.
2675 */
2676 if ((error = ciss_synch_request(cr, 60 * 1000))) {
2677 debug(0, "request failed - %d", error);
2678 goto out;
2679 }
2680
2681 /*
2682 * Check to see if the command succeeded.
2683 */
2684 ce = (struct ciss_error_info *)&(cc->sg[0]);
2685 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0)
2686 bzero(ce, sizeof(*ce));
2687
2688 /*
2689 * Copy the results back to the user.
2690 */
2691 bcopy(ce, &ioc->error_info, sizeof(*ce));
2692 mtx_unlock(&sc->ciss_mtx);
2693 if ((ioc->buf_size > 0) &&
2694 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) {
2695 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2696 goto out_unlocked;
2697 }
2698
2699 /* done OK */
2700 error = 0;
2701
2702 out_unlocked:
2703 mtx_lock(&sc->ciss_mtx);
2704
2705 out:
2706 if ((cr != NULL) && (cr->cr_data != NULL))
2707 free(cr->cr_data, CISS_MALLOC_CLASS);
2708 if (cr != NULL)
2709 ciss_release_request(cr);
2710 return(error);
2711 }
2712
2713 /************************************************************************
2714 * Map a request into bus-visible space, initialise the scatter/gather
2715 * list.
2716 */
2717 static int
ciss_map_request(struct ciss_request * cr)2718 ciss_map_request(struct ciss_request *cr)
2719 {
2720 struct ciss_softc *sc;
2721 int error = 0;
2722
2723 debug_called(2);
2724
2725 sc = cr->cr_sc;
2726
2727 /* check that mapping is necessary */
2728 if (cr->cr_flags & CISS_REQ_MAPPED)
2729 return(0);
2730
2731 cr->cr_flags |= CISS_REQ_MAPPED;
2732
2733 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2734 BUS_DMASYNC_PREWRITE);
2735
2736 if (cr->cr_data != NULL) {
2737 if (cr->cr_flags & CISS_REQ_CCB)
2738 error = bus_dmamap_load_ccb(sc->ciss_buffer_dmat,
2739 cr->cr_datamap, cr->cr_data,
2740 ciss_request_map_helper, cr, 0);
2741 else
2742 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap,
2743 cr->cr_data, cr->cr_length,
2744 ciss_request_map_helper, cr, 0);
2745 if (error != 0)
2746 return (error);
2747 } else {
2748 /*
2749 * Post the command to the adapter.
2750 */
2751 cr->cr_sg_tag = CISS_SG_NONE;
2752 cr->cr_flags |= CISS_REQ_BUSY;
2753 if (sc->ciss_perf)
2754 CISS_TL_PERF_POST_CMD(sc, cr);
2755 else
2756 CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys);
2757 }
2758
2759 return(0);
2760 }
2761
2762 static void
ciss_request_map_helper(void * arg,bus_dma_segment_t * segs,int nseg,int error)2763 ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2764 {
2765 struct ciss_command *cc;
2766 struct ciss_request *cr;
2767 struct ciss_softc *sc;
2768 int i;
2769
2770 debug_called(2);
2771
2772 cr = (struct ciss_request *)arg;
2773 sc = cr->cr_sc;
2774 cc = cr->cr_cc;
2775
2776 for (i = 0; i < nseg; i++) {
2777 cc->sg[i].address = segs[i].ds_addr;
2778 cc->sg[i].length = segs[i].ds_len;
2779 cc->sg[i].extension = 0;
2780 }
2781 /* we leave the s/g table entirely within the command */
2782 cc->header.sg_in_list = nseg;
2783 cc->header.sg_total = nseg;
2784
2785 if (cr->cr_flags & CISS_REQ_DATAIN)
2786 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD);
2787 if (cr->cr_flags & CISS_REQ_DATAOUT)
2788 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE);
2789
2790 if (nseg == 0)
2791 cr->cr_sg_tag = CISS_SG_NONE;
2792 else if (nseg == 1)
2793 cr->cr_sg_tag = CISS_SG_1;
2794 else if (nseg == 2)
2795 cr->cr_sg_tag = CISS_SG_2;
2796 else if (nseg <= 4)
2797 cr->cr_sg_tag = CISS_SG_4;
2798 else if (nseg <= 8)
2799 cr->cr_sg_tag = CISS_SG_8;
2800 else if (nseg <= 16)
2801 cr->cr_sg_tag = CISS_SG_16;
2802 else if (nseg <= 32)
2803 cr->cr_sg_tag = CISS_SG_32;
2804 else
2805 cr->cr_sg_tag = CISS_SG_MAX;
2806
2807 /*
2808 * Post the command to the adapter.
2809 */
2810 cr->cr_flags |= CISS_REQ_BUSY;
2811 if (sc->ciss_perf)
2812 CISS_TL_PERF_POST_CMD(sc, cr);
2813 else
2814 CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys);
2815 }
2816
2817 /************************************************************************
2818 * Unmap a request from bus-visible space.
2819 */
2820 static void
ciss_unmap_request(struct ciss_request * cr)2821 ciss_unmap_request(struct ciss_request *cr)
2822 {
2823 struct ciss_softc *sc;
2824
2825 debug_called(2);
2826
2827 sc = cr->cr_sc;
2828
2829 /* check that unmapping is necessary */
2830 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0)
2831 return;
2832
2833 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2834 BUS_DMASYNC_POSTWRITE);
2835
2836 if (cr->cr_data == NULL)
2837 goto out;
2838
2839 if (cr->cr_flags & CISS_REQ_DATAIN)
2840 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD);
2841 if (cr->cr_flags & CISS_REQ_DATAOUT)
2842 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE);
2843
2844 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap);
2845 out:
2846 cr->cr_flags &= ~CISS_REQ_MAPPED;
2847 }
2848
2849 /************************************************************************
2850 * Attach the driver to CAM.
2851 *
2852 * We put all the logical drives on a single SCSI bus.
2853 */
2854 static int
ciss_cam_init(struct ciss_softc * sc)2855 ciss_cam_init(struct ciss_softc *sc)
2856 {
2857 int i, maxbus;
2858
2859 debug_called(1);
2860
2861 /*
2862 * Allocate a devq. We can reuse this for the masked physical
2863 * devices if we decide to export these as well.
2864 */
2865 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests - 2)) == NULL) {
2866 ciss_printf(sc, "can't allocate CAM SIM queue\n");
2867 return(ENOMEM);
2868 }
2869
2870 /*
2871 * Create a SIM.
2872 *
2873 * This naturally wastes a bit of memory. The alternative is to allocate
2874 * and register each bus as it is found, and then track them on a linked
2875 * list. Unfortunately, the driver has a few places where it needs to
2876 * look up the SIM based solely on bus number, and it's unclear whether
2877 * a list traversal would work for these situations.
2878 */
2879 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus +
2880 CISS_PHYSICAL_BASE);
2881 sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*),
2882 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
2883 if (sc->ciss_cam_sim == NULL) {
2884 ciss_printf(sc, "can't allocate memory for controller SIM\n");
2885 return(ENOMEM);
2886 }
2887
2888 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2889 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2890 "ciss", sc,
2891 device_get_unit(sc->ciss_dev),
2892 &sc->ciss_mtx,
2893 2,
2894 sc->ciss_max_requests - 2,
2895 sc->ciss_cam_devq)) == NULL) {
2896 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2897 return(ENOMEM);
2898 }
2899
2900 /*
2901 * Register bus with this SIM.
2902 */
2903 mtx_lock(&sc->ciss_mtx);
2904 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) {
2905 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2906 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2907 mtx_unlock(&sc->ciss_mtx);
2908 return (ENXIO);
2909 }
2910 }
2911 mtx_unlock(&sc->ciss_mtx);
2912 }
2913
2914 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2915 CISS_PHYSICAL_BASE; i++) {
2916 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2917 "ciss", sc,
2918 device_get_unit(sc->ciss_dev),
2919 &sc->ciss_mtx, 1,
2920 sc->ciss_max_requests - 2,
2921 sc->ciss_cam_devq)) == NULL) {
2922 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2923 return (ENOMEM);
2924 }
2925
2926 mtx_lock(&sc->ciss_mtx);
2927 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2928 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2929 mtx_unlock(&sc->ciss_mtx);
2930 return (ENXIO);
2931 }
2932 mtx_unlock(&sc->ciss_mtx);
2933 }
2934
2935 return(0);
2936 }
2937
2938 /************************************************************************
2939 * Initiate a rescan of the 'logical devices' SIM
2940 */
2941 static void
ciss_cam_rescan_target(struct ciss_softc * sc,int bus,int target)2942 ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target)
2943 {
2944 union ccb *ccb;
2945
2946 debug_called(1);
2947
2948 if ((ccb = xpt_alloc_ccb_nowait()) == NULL) {
2949 ciss_printf(sc, "rescan failed (can't allocate CCB)\n");
2950 return;
2951 }
2952
2953 if (xpt_create_path(&ccb->ccb_h.path, NULL,
2954 cam_sim_path(sc->ciss_cam_sim[bus]),
2955 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
2956 ciss_printf(sc, "rescan failed (can't create path)\n");
2957 xpt_free_ccb(ccb);
2958 return;
2959 }
2960 xpt_rescan(ccb);
2961 /* scan is now in progress */
2962 }
2963
2964 /************************************************************************
2965 * Handle requests coming from CAM
2966 */
2967 static void
ciss_cam_action(struct cam_sim * sim,union ccb * ccb)2968 ciss_cam_action(struct cam_sim *sim, union ccb *ccb)
2969 {
2970 struct ciss_softc *sc;
2971 struct ccb_scsiio *csio;
2972 int bus, target;
2973 int physical;
2974
2975 sc = cam_sim_softc(sim);
2976 bus = cam_sim_bus(sim);
2977 csio = (struct ccb_scsiio *)&ccb->csio;
2978 target = csio->ccb_h.target_id;
2979 physical = CISS_IS_PHYSICAL(bus);
2980
2981 switch (ccb->ccb_h.func_code) {
2982 /* perform SCSI I/O */
2983 case XPT_SCSI_IO:
2984 if (!ciss_cam_action_io(sim, csio))
2985 return;
2986 break;
2987
2988 /* perform geometry calculations */
2989 case XPT_CALC_GEOMETRY:
2990 {
2991 struct ccb_calc_geometry *ccg = &ccb->ccg;
2992 struct ciss_ldrive *ld;
2993
2994 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2995
2996 ld = NULL;
2997 if (!physical)
2998 ld = &sc->ciss_logical[bus][target];
2999
3000 /*
3001 * Use the cached geometry settings unless the fault tolerance
3002 * is invalid.
3003 */
3004 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) {
3005 u_int32_t secs_per_cylinder;
3006
3007 ccg->heads = 255;
3008 ccg->secs_per_track = 32;
3009 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
3010 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
3011 } else {
3012 ccg->heads = ld->cl_geometry.heads;
3013 ccg->secs_per_track = ld->cl_geometry.sectors;
3014 ccg->cylinders = ntohs(ld->cl_geometry.cylinders);
3015 }
3016 ccb->ccb_h.status = CAM_REQ_CMP;
3017 break;
3018 }
3019
3020 /* handle path attribute inquiry */
3021 case XPT_PATH_INQ:
3022 {
3023 struct ccb_pathinq *cpi = &ccb->cpi;
3024 int sg_length;
3025
3026 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
3027
3028 cpi->version_num = 1;
3029 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */
3030 cpi->target_sprt = 0;
3031 cpi->hba_misc = 0;
3032 cpi->max_target = sc->ciss_cfg->max_logical_supported;
3033 cpi->max_lun = 0; /* 'logical drive' channel only */
3034 cpi->initiator_id = sc->ciss_cfg->max_logical_supported;
3035 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
3036 strlcpy(cpi->hba_vid, "CISS", HBA_IDLEN);
3037 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
3038 cpi->unit_number = cam_sim_unit(sim);
3039 cpi->bus_id = cam_sim_bus(sim);
3040 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
3041 cpi->transport = XPORT_SPI;
3042 cpi->transport_version = 2;
3043 cpi->protocol = PROTO_SCSI;
3044 cpi->protocol_version = SCSI_REV_2;
3045 if (sc->ciss_cfg->max_sg_length == 0) {
3046 sg_length = 17;
3047 } else {
3048 /* XXX Fix for ZMR cards that advertise max_sg_length == 32
3049 * Confusing bit here. max_sg_length is usually a power of 2. We always
3050 * need to subtract 1 to account for partial pages. Then we need to
3051 * align on a valid PAGE_SIZE so we round down to the nearest power of 2.
3052 * Add 1 so we can then subtract it out in the assignment to maxio.
3053 * The reason for all these shenanigans is to create a maxio value that
3054 * creates IO operations to volumes that yield consistent operations
3055 * with good performance.
3056 */
3057 sg_length = sc->ciss_cfg->max_sg_length - 1;
3058 sg_length = (1 << (fls(sg_length) - 1)) + 1;
3059 }
3060 cpi->maxio = (min(CISS_MAX_SG_ELEMENTS, sg_length) - 1) * PAGE_SIZE;
3061 ccb->ccb_h.status = CAM_REQ_CMP;
3062 break;
3063 }
3064
3065 case XPT_GET_TRAN_SETTINGS:
3066 {
3067 struct ccb_trans_settings *cts = &ccb->cts;
3068 int bus, target;
3069 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
3070 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
3071
3072 bus = cam_sim_bus(sim);
3073 target = cts->ccb_h.target_id;
3074
3075 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
3076 /* disconnect always OK */
3077 cts->protocol = PROTO_SCSI;
3078 cts->protocol_version = SCSI_REV_2;
3079 cts->transport = XPORT_SPI;
3080 cts->transport_version = 2;
3081
3082 spi->valid = CTS_SPI_VALID_DISC;
3083 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
3084
3085 scsi->valid = CTS_SCSI_VALID_TQ;
3086 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
3087
3088 cts->ccb_h.status = CAM_REQ_CMP;
3089 break;
3090 }
3091
3092 default: /* we can't do this */
3093 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
3094 ccb->ccb_h.status = CAM_REQ_INVALID;
3095 break;
3096 }
3097
3098 xpt_done(ccb);
3099 }
3100
3101 /************************************************************************
3102 * Handle a CAM SCSI I/O request.
3103 */
3104 static int
ciss_cam_action_io(struct cam_sim * sim,struct ccb_scsiio * csio)3105 ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
3106 {
3107 struct ciss_softc *sc;
3108 int bus, target;
3109 struct ciss_request *cr;
3110 struct ciss_command *cc;
3111 int error;
3112
3113 sc = cam_sim_softc(sim);
3114 bus = cam_sim_bus(sim);
3115 target = csio->ccb_h.target_id;
3116
3117 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
3118
3119 /* check that the CDB pointer is not to a physical address */
3120 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
3121 debug(3, " CDB pointer is to physical address");
3122 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3123 }
3124
3125 /* abandon aborted ccbs or those that have failed validation */
3126 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
3127 debug(3, "abandoning CCB due to abort/validation failure");
3128 return(EINVAL);
3129 }
3130
3131 /* handle emulation of some SCSI commands ourself */
3132 if (ciss_cam_emulate(sc, csio))
3133 return(0);
3134
3135 /*
3136 * Get a request to manage this command. If we can't, return the
3137 * ccb, freeze the queue and flag so that we unfreeze it when a
3138 * request completes.
3139 */
3140 if ((error = ciss_get_request(sc, &cr)) != 0) {
3141 xpt_freeze_simq(sim, 1);
3142 sc->ciss_flags |= CISS_FLAG_BUSY;
3143 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3144 return(error);
3145 }
3146
3147 /*
3148 * Build the command.
3149 */
3150 cc = cr->cr_cc;
3151 cr->cr_data = csio;
3152 cr->cr_length = csio->dxfer_len;
3153 cr->cr_complete = ciss_cam_complete;
3154 cr->cr_private = csio;
3155
3156 /*
3157 * Target the right logical volume.
3158 */
3159 if (CISS_IS_PHYSICAL(bus))
3160 cc->header.address =
3161 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address;
3162 else
3163 cc->header.address =
3164 sc->ciss_logical[bus][target].cl_address;
3165 cc->cdb.cdb_length = csio->cdb_len;
3166 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3167 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */
3168 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
3169 cr->cr_flags = CISS_REQ_DATAOUT | CISS_REQ_CCB;
3170 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3171 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
3172 cr->cr_flags = CISS_REQ_DATAIN | CISS_REQ_CCB;
3173 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3174 } else {
3175 cr->cr_data = NULL;
3176 cr->cr_flags = 0;
3177 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
3178 }
3179 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1;
3180 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
3181 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len);
3182 } else {
3183 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len);
3184 }
3185
3186 /*
3187 * Submit the request to the adapter.
3188 *
3189 * Note that this may fail if we're unable to map the request (and
3190 * if we ever learn a transport layer other than simple, may fail
3191 * if the adapter rejects the command).
3192 */
3193 if ((error = ciss_start(cr)) != 0) {
3194 xpt_freeze_simq(sim, 1);
3195 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3196 if (error == EINPROGRESS) {
3197 error = 0;
3198 } else {
3199 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3200 ciss_release_request(cr);
3201 }
3202 return(error);
3203 }
3204
3205 return(0);
3206 }
3207
3208 /************************************************************************
3209 * Emulate SCSI commands the adapter doesn't handle as we might like.
3210 */
3211 static int
ciss_cam_emulate(struct ciss_softc * sc,struct ccb_scsiio * csio)3212 ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio)
3213 {
3214 int bus, target;
3215 u_int8_t opcode;
3216
3217 target = csio->ccb_h.target_id;
3218 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3219 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3220 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0];
3221
3222 if (CISS_IS_PHYSICAL(bus)) {
3223 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) {
3224 csio->ccb_h.status |= CAM_SEL_TIMEOUT;
3225 xpt_done((union ccb *)csio);
3226 return(1);
3227 } else
3228 return(0);
3229 }
3230
3231 /*
3232 * Handle requests for volumes that don't exist or are not online.
3233 * A selection timeout is slightly better than an illegal request.
3234 * Other errors might be better.
3235 */
3236 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) {
3237 csio->ccb_h.status |= CAM_SEL_TIMEOUT;
3238 xpt_done((union ccb *)csio);
3239 return(1);
3240 }
3241
3242 /* if we have to fake Synchronise Cache */
3243 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) {
3244 /*
3245 * If this is a Synchronise Cache command, typically issued when
3246 * a device is closed, flush the adapter and complete now.
3247 */
3248 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
3249 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) {
3250 ciss_flush_adapter(sc);
3251 csio->ccb_h.status |= CAM_REQ_CMP;
3252 xpt_done((union ccb *)csio);
3253 return(1);
3254 }
3255 }
3256
3257 /*
3258 * A CISS target can only ever have one lun per target. REPORT_LUNS requires
3259 * at least one LUN field to be pre created for us, so snag it and fill in
3260 * the least significant byte indicating 1 LUN here. Emulate the command
3261 * return to shut up warning on console of a CDB error. swb
3262 */
3263 if (opcode == REPORT_LUNS && csio->dxfer_len > 0) {
3264 csio->data_ptr[3] = 8;
3265 csio->ccb_h.status |= CAM_REQ_CMP;
3266 xpt_done((union ccb *)csio);
3267 return(1);
3268 }
3269
3270 return(0);
3271 }
3272
3273 /************************************************************************
3274 * Check for possibly-completed commands.
3275 */
3276 static void
ciss_cam_poll(struct cam_sim * sim)3277 ciss_cam_poll(struct cam_sim *sim)
3278 {
3279 cr_qhead_t qh;
3280 struct ciss_softc *sc = cam_sim_softc(sim);
3281
3282 debug_called(2);
3283
3284 STAILQ_INIT(&qh);
3285 if (sc->ciss_perf)
3286 ciss_perf_done(sc, &qh);
3287 else
3288 ciss_done(sc, &qh);
3289 ciss_complete(sc, &qh);
3290 }
3291
3292 /************************************************************************
3293 * Handle completion of a command - pass results back through the CCB
3294 */
3295 static void
ciss_cam_complete(struct ciss_request * cr)3296 ciss_cam_complete(struct ciss_request *cr)
3297 {
3298 struct ciss_softc *sc;
3299 struct ciss_command *cc;
3300 struct ciss_error_info *ce;
3301 struct ccb_scsiio *csio;
3302 int scsi_status;
3303 int command_status;
3304
3305 debug_called(2);
3306
3307 sc = cr->cr_sc;
3308 cc = cr->cr_cc;
3309 ce = (struct ciss_error_info *)&(cc->sg[0]);
3310 csio = (struct ccb_scsiio *)cr->cr_private;
3311
3312 /*
3313 * Extract status values from request.
3314 */
3315 ciss_report_request(cr, &command_status, &scsi_status);
3316 switch(command_status) {
3317 case CISS_CMD_STATUS_DATA_UNDERRUN:
3318 csio->resid = ce->residual_count;
3319 /* FALLTHROUGH */
3320 case CISS_CMD_STATUS_SUCCESS:
3321 csio->scsi_status = scsi_status;
3322 debug(2, "SCSI_STATUS_OK");
3323 csio->ccb_h.status |= CAM_REQ_CMP;
3324 break;
3325 case CISS_CMD_STATUS_TARGET_STATUS:
3326 csio->scsi_status = scsi_status;
3327 bzero(&csio->sense_data, SSD_FULL_SIZE);
3328 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length);
3329 if (csio->sense_len > ce->sense_length)
3330 csio->sense_resid = csio->sense_len - ce->sense_length;
3331 else
3332 csio->sense_resid = 0;
3333 csio->resid = ce->residual_count;
3334 csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
3335 break;
3336 case CISS_CMD_STATUS_DATA_OVERRUN:
3337 csio->ccb_h.status |= CAM_DATA_RUN_ERR;
3338 break;
3339 default:
3340 csio->ccb_h.status |= CAM_REQ_CMP_ERR;
3341 break;
3342 }
3343
3344 /* handle post-command fixup */
3345 ciss_cam_complete_fixup(sc, csio);
3346
3347 ciss_release_request(cr);
3348 if (sc->ciss_flags & CISS_FLAG_BUSY) {
3349 sc->ciss_flags &= ~CISS_FLAG_BUSY;
3350 if (csio->ccb_h.status & CAM_RELEASE_SIMQ)
3351 xpt_release_simq(xpt_path_sim(csio->ccb_h.path), 0);
3352 else
3353 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3354 }
3355 xpt_done((union ccb *)csio);
3356 }
3357
3358 /********************************************************************************
3359 * Fix up the result of some commands here.
3360 */
3361 static void
ciss_cam_complete_fixup(struct ciss_softc * sc,struct ccb_scsiio * csio)3362 ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio)
3363 {
3364 struct scsi_inquiry_data *inq;
3365 struct ciss_ldrive *cl;
3366 uint8_t *cdb;
3367 int bus, target;
3368
3369 cdb = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3370 (uint8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes;
3371 if (cdb[0] == INQUIRY &&
3372 (cdb[1] & SI_EVPD) == 0 &&
3373 (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
3374 csio->dxfer_len >= SHORT_INQUIRY_LENGTH) {
3375 inq = (struct scsi_inquiry_data *)csio->data_ptr;
3376 target = csio->ccb_h.target_id;
3377 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3378
3379 /*
3380 * If the controller is in JBOD mode, there are no logical volumes.
3381 * Let the disks be probed and dealt with via CAM. Else, mask off
3382 * the physical disks and setup the parts of the inq structure for
3383 * the logical volume. swb
3384 */
3385 if( !(sc->ciss_id->PowerUPNvramFlags & PWR_UP_FLAG_JBOD_ENABLED)){
3386 if (CISS_IS_PHYSICAL(bus)) {
3387 if (SID_TYPE(inq) == T_DIRECT)
3388 inq->device = (inq->device & 0xe0) | T_NODEVICE;
3389 return;
3390 }
3391 cl = &sc->ciss_logical[bus][target];
3392
3393 padstr(inq->vendor, "HP",
3394 SID_VENDOR_SIZE);
3395 padstr(inq->product,
3396 ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance),
3397 SID_PRODUCT_SIZE);
3398 padstr(inq->revision,
3399 ciss_name_ldrive_status(cl->cl_lstatus->status),
3400 SID_REVISION_SIZE);
3401 }
3402 }
3403 }
3404
3405 /********************************************************************************
3406 * Name the device at (target)
3407 *
3408 * XXX is this strictly correct?
3409 */
3410 static int
ciss_name_device(struct ciss_softc * sc,int bus,int target)3411 ciss_name_device(struct ciss_softc *sc, int bus, int target)
3412 {
3413 struct cam_periph *periph;
3414 struct cam_path *path;
3415 int status;
3416
3417 if (CISS_IS_PHYSICAL(bus))
3418 return (0);
3419
3420 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]),
3421 target, 0);
3422
3423 if (status == CAM_REQ_CMP) {
3424 xpt_path_lock(path);
3425 periph = cam_periph_find(path, NULL);
3426 xpt_path_unlock(path);
3427 xpt_free_path(path);
3428 if (periph != NULL) {
3429 sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d",
3430 periph->periph_name, periph->unit_number);
3431 return(0);
3432 }
3433 }
3434 sc->ciss_logical[bus][target].cl_name[0] = 0;
3435 return(ENOENT);
3436 }
3437
3438 /************************************************************************
3439 * Periodic status monitoring.
3440 */
3441 static void
ciss_periodic(void * arg)3442 ciss_periodic(void *arg)
3443 {
3444 struct ciss_softc *sc;
3445 struct ciss_request *cr = NULL;
3446 struct ciss_command *cc = NULL;
3447 int error = 0;
3448
3449 debug_called(1);
3450
3451 sc = (struct ciss_softc *)arg;
3452
3453 /*
3454 * Check the adapter heartbeat.
3455 */
3456 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) {
3457 sc->ciss_heart_attack++;
3458 debug(0, "adapter heart attack in progress 0x%x/%d",
3459 sc->ciss_heartbeat, sc->ciss_heart_attack);
3460 if (sc->ciss_heart_attack == 3) {
3461 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n");
3462 ciss_disable_adapter(sc);
3463 return;
3464 }
3465 } else {
3466 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat;
3467 sc->ciss_heart_attack = 0;
3468 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat);
3469 }
3470
3471 /*
3472 * Send the NOP message and wait for a response.
3473 */
3474 if (ciss_nop_message_heartbeat != 0 && (error = ciss_get_request(sc, &cr)) == 0) {
3475 cc = cr->cr_cc;
3476 cr->cr_complete = ciss_nop_complete;
3477 cc->cdb.cdb_length = 1;
3478 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
3479 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3480 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3481 cc->cdb.timeout = 0;
3482 cc->cdb.cdb[0] = CISS_OPCODE_MESSAGE_NOP;
3483
3484 if ((error = ciss_start(cr)) != 0) {
3485 ciss_printf(sc, "SENDING NOP MESSAGE FAILED\n");
3486 }
3487 }
3488
3489 /*
3490 * If the notify event request has died for some reason, or has
3491 * not started yet, restart it.
3492 */
3493 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) {
3494 debug(0, "(re)starting Event Notify chain");
3495 ciss_notify_event(sc);
3496 }
3497
3498 /*
3499 * Reschedule.
3500 */
3501 callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz, ciss_periodic, sc);
3502 }
3503
3504 static void
ciss_nop_complete(struct ciss_request * cr)3505 ciss_nop_complete(struct ciss_request *cr)
3506 {
3507 struct ciss_softc *sc;
3508 static int first_time = 1;
3509
3510 sc = cr->cr_sc;
3511 if (ciss_report_request(cr, NULL, NULL) != 0) {
3512 if (first_time == 1) {
3513 first_time = 0;
3514 ciss_printf(sc, "SENDING NOP MESSAGE FAILED (not logging anymore)\n");
3515 }
3516 }
3517
3518 ciss_release_request(cr);
3519 }
3520
3521 /************************************************************************
3522 * Disable the adapter.
3523 *
3524 * The all requests in completed queue is failed with hardware error.
3525 * This will cause failover in a multipath configuration.
3526 */
3527 static void
ciss_disable_adapter(struct ciss_softc * sc)3528 ciss_disable_adapter(struct ciss_softc *sc)
3529 {
3530 cr_qhead_t qh;
3531 struct ciss_request *cr;
3532 struct ciss_command *cc;
3533 struct ciss_error_info *ce;
3534 int i;
3535
3536 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
3537 pci_disable_busmaster(sc->ciss_dev);
3538 sc->ciss_flags &= ~CISS_FLAG_RUNNING;
3539
3540 STAILQ_INIT(&qh);
3541 for (i = 1; i < sc->ciss_max_requests; i++) {
3542 cr = &sc->ciss_request[i];
3543 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
3544 continue;
3545
3546 cc = cr->cr_cc;
3547 ce = (struct ciss_error_info *)&(cc->sg[0]);
3548 ce->command_status = CISS_CMD_STATUS_HARDWARE_ERROR;
3549 ciss_enqueue_complete(cr, &qh);
3550 }
3551
3552 for (;;) {
3553 if ((cr = ciss_dequeue_complete(sc, &qh)) == NULL)
3554 break;
3555
3556 /*
3557 * If the request has a callback, invoke it.
3558 */
3559 if (cr->cr_complete != NULL) {
3560 cr->cr_complete(cr);
3561 continue;
3562 }
3563
3564 /*
3565 * If someone is sleeping on this request, wake them up.
3566 */
3567 if (cr->cr_flags & CISS_REQ_SLEEP) {
3568 cr->cr_flags &= ~CISS_REQ_SLEEP;
3569 wakeup(cr);
3570 continue;
3571 }
3572 }
3573 }
3574
3575 /************************************************************************
3576 * Request a notification response from the adapter.
3577 *
3578 * If (cr) is NULL, this is the first request of the adapter, so
3579 * reset the adapter's message pointer and start with the oldest
3580 * message available.
3581 */
3582 static void
ciss_notify_event(struct ciss_softc * sc)3583 ciss_notify_event(struct ciss_softc *sc)
3584 {
3585 struct ciss_request *cr;
3586 struct ciss_command *cc;
3587 struct ciss_notify_cdb *cnc;
3588 int error;
3589
3590 debug_called(1);
3591
3592 cr = sc->ciss_periodic_notify;
3593
3594 /* get a request if we don't already have one */
3595 if (cr == NULL) {
3596 if ((error = ciss_get_request(sc, &cr)) != 0) {
3597 debug(0, "can't get notify event request");
3598 goto out;
3599 }
3600 sc->ciss_periodic_notify = cr;
3601 cr->cr_complete = ciss_notify_complete;
3602 debug(1, "acquired request %d", cr->cr_tag);
3603 }
3604
3605 /*
3606 * Get a databuffer if we don't already have one, note that the
3607 * adapter command wants a larger buffer than the actual
3608 * structure.
3609 */
3610 if (cr->cr_data == NULL) {
3611 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3612 debug(0, "can't get notify event request buffer");
3613 error = ENOMEM;
3614 goto out;
3615 }
3616 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3617 }
3618
3619 /* re-setup the request's command (since we never release it) XXX overkill*/
3620 ciss_preen_command(cr);
3621
3622 /* (re)build the notify event command */
3623 cc = cr->cr_cc;
3624 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3625 cc->header.address.physical.bus = 0;
3626 cc->header.address.physical.target = 0;
3627
3628 cc->cdb.cdb_length = sizeof(*cnc);
3629 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3630 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3631 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3632 cc->cdb.timeout = 0; /* no timeout, we hope */
3633
3634 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3635 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE);
3636 cnc->opcode = CISS_OPCODE_READ;
3637 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT;
3638 cnc->timeout = 0; /* no timeout, we hope */
3639 cnc->synchronous = 0;
3640 cnc->ordered = 0;
3641 cnc->seek_to_oldest = 0;
3642 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0)
3643 cnc->new_only = 1;
3644 else
3645 cnc->new_only = 0;
3646 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3647
3648 /* submit the request */
3649 error = ciss_start(cr);
3650
3651 out:
3652 if (error) {
3653 if (cr != NULL) {
3654 if (cr->cr_data != NULL)
3655 free(cr->cr_data, CISS_MALLOC_CLASS);
3656 ciss_release_request(cr);
3657 }
3658 sc->ciss_periodic_notify = NULL;
3659 debug(0, "can't submit notify event request");
3660 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3661 } else {
3662 debug(1, "notify event submitted");
3663 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK;
3664 }
3665 }
3666
3667 static void
ciss_notify_complete(struct ciss_request * cr)3668 ciss_notify_complete(struct ciss_request *cr)
3669 {
3670 struct ciss_command *cc;
3671 struct ciss_notify *cn;
3672 struct ciss_softc *sc;
3673 int scsi_status;
3674 int command_status;
3675 debug_called(1);
3676
3677 cc = cr->cr_cc;
3678 cn = (struct ciss_notify *)cr->cr_data;
3679 sc = cr->cr_sc;
3680
3681 /*
3682 * Report request results, decode status.
3683 */
3684 ciss_report_request(cr, &command_status, &scsi_status);
3685
3686 /*
3687 * Abort the chain on a fatal error.
3688 *
3689 * XXX which of these are actually errors?
3690 */
3691 if ((command_status != CISS_CMD_STATUS_SUCCESS) &&
3692 (command_status != CISS_CMD_STATUS_TARGET_STATUS) &&
3693 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */
3694 ciss_printf(sc, "fatal error in Notify Event request (%s)\n",
3695 ciss_name_command_status(command_status));
3696 ciss_release_request(cr);
3697 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3698 return;
3699 }
3700
3701 /*
3702 * If the adapter gave us a text message, print it.
3703 */
3704 if (cn->message[0] != 0)
3705 ciss_printf(sc, "*** %.80s\n", cn->message);
3706
3707 debug(0, "notify event class %d subclass %d detail %d",
3708 cn->class, cn->subclass, cn->detail);
3709
3710 /*
3711 * If the response indicates that the notifier has been aborted,
3712 * release the notifier command.
3713 */
3714 if ((cn->class == CISS_NOTIFY_NOTIFIER) &&
3715 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) &&
3716 (cn->detail == 1)) {
3717 debug(0, "notifier exiting");
3718 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3719 ciss_release_request(cr);
3720 sc->ciss_periodic_notify = NULL;
3721 wakeup(&sc->ciss_periodic_notify);
3722 } else {
3723 /* Handle notify events in a kernel thread */
3724 ciss_enqueue_notify(cr);
3725 sc->ciss_periodic_notify = NULL;
3726 wakeup(&sc->ciss_periodic_notify);
3727 wakeup(&sc->ciss_notify);
3728 }
3729 /*
3730 * Send a new notify event command, if we're not aborting.
3731 */
3732 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) {
3733 ciss_notify_event(sc);
3734 }
3735 }
3736
3737 /************************************************************************
3738 * Abort the Notify Event chain.
3739 *
3740 * Note that we can't just abort the command in progress; we have to
3741 * explicitly issue an Abort Notify Event command in order for the
3742 * adapter to clean up correctly.
3743 *
3744 * If we are called with CISS_FLAG_ABORTING set in the adapter softc,
3745 * the chain will not restart itself.
3746 */
3747 static int
ciss_notify_abort(struct ciss_softc * sc)3748 ciss_notify_abort(struct ciss_softc *sc)
3749 {
3750 struct ciss_request *cr;
3751 struct ciss_command *cc;
3752 struct ciss_notify_cdb *cnc;
3753 int error, command_status, scsi_status;
3754
3755 debug_called(1);
3756
3757 cr = NULL;
3758 error = 0;
3759
3760 /* verify that there's an outstanding command */
3761 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3762 goto out;
3763
3764 /* get a command to issue the abort with */
3765 if ((error = ciss_get_request(sc, &cr)))
3766 goto out;
3767
3768 /* get a buffer for the result */
3769 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3770 debug(0, "can't get notify event request buffer");
3771 error = ENOMEM;
3772 goto out;
3773 }
3774 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3775
3776 /* build the CDB */
3777 cc = cr->cr_cc;
3778 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3779 cc->header.address.physical.bus = 0;
3780 cc->header.address.physical.target = 0;
3781 cc->cdb.cdb_length = sizeof(*cnc);
3782 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3783 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3784 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3785 cc->cdb.timeout = 0; /* no timeout, we hope */
3786
3787 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3788 bzero(cnc, sizeof(*cnc));
3789 cnc->opcode = CISS_OPCODE_WRITE;
3790 cnc->command = CISS_COMMAND_ABORT_NOTIFY;
3791 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3792 #if 0
3793 ciss_print_request(cr);
3794 #endif
3795
3796 /*
3797 * Submit the request and wait for it to complete.
3798 */
3799 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3800 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error);
3801 goto out;
3802 }
3803
3804 /*
3805 * Check response.
3806 */
3807 ciss_report_request(cr, &command_status, &scsi_status);
3808 switch(command_status) {
3809 case CISS_CMD_STATUS_SUCCESS:
3810 break;
3811 case CISS_CMD_STATUS_INVALID_COMMAND:
3812 /*
3813 * Some older adapters don't support the CISS version of this
3814 * command. Fall back to using the BMIC version.
3815 */
3816 error = ciss_notify_abort_bmic(sc);
3817 if (error != 0)
3818 goto out;
3819 break;
3820
3821 case CISS_CMD_STATUS_TARGET_STATUS:
3822 /*
3823 * This can happen if the adapter thinks there wasn't an outstanding
3824 * Notify Event command but we did. We clean up here.
3825 */
3826 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) {
3827 if (sc->ciss_periodic_notify != NULL)
3828 ciss_release_request(sc->ciss_periodic_notify);
3829 error = 0;
3830 goto out;
3831 }
3832 /* FALLTHROUGH */
3833
3834 default:
3835 ciss_printf(sc, "Abort Notify Event command failed (%s)\n",
3836 ciss_name_command_status(command_status));
3837 error = EIO;
3838 goto out;
3839 }
3840
3841 /*
3842 * Sleep waiting for the notifier command to complete. Note
3843 * that if it doesn't, we may end up in a bad situation, since
3844 * the adapter may deliver it later. Also note that the adapter
3845 * requires the Notify Event command to be cancelled in order to
3846 * maintain internal bookkeeping.
3847 */
3848 while (sc->ciss_periodic_notify != NULL) {
3849 error = msleep(&sc->ciss_periodic_notify, &sc->ciss_mtx, PRIBIO, "cissNEA", hz * 5);
3850 if (error == EWOULDBLOCK) {
3851 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n");
3852 break;
3853 }
3854 }
3855
3856 out:
3857 /* release the cancel request */
3858 if (cr != NULL) {
3859 if (cr->cr_data != NULL)
3860 free(cr->cr_data, CISS_MALLOC_CLASS);
3861 ciss_release_request(cr);
3862 }
3863 if (error == 0)
3864 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3865 return(error);
3866 }
3867
3868 /************************************************************************
3869 * Abort the Notify Event chain using a BMIC command.
3870 */
3871 static int
ciss_notify_abort_bmic(struct ciss_softc * sc)3872 ciss_notify_abort_bmic(struct ciss_softc *sc)
3873 {
3874 struct ciss_request *cr;
3875 int error, command_status;
3876
3877 debug_called(1);
3878
3879 cr = NULL;
3880 error = 0;
3881
3882 /* verify that there's an outstanding command */
3883 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3884 goto out;
3885
3886 /*
3887 * Build a BMIC command to cancel the Notify on Event command.
3888 *
3889 * Note that we are sending a CISS opcode here. Odd.
3890 */
3891 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY,
3892 NULL, 0)) != 0)
3893 goto out;
3894
3895 /*
3896 * Submit the request and wait for it to complete.
3897 */
3898 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3899 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error);
3900 goto out;
3901 }
3902
3903 /*
3904 * Check response.
3905 */
3906 ciss_report_request(cr, &command_status, NULL);
3907 switch(command_status) {
3908 case CISS_CMD_STATUS_SUCCESS:
3909 break;
3910 default:
3911 ciss_printf(sc, "error cancelling Notify on Event (%s)\n",
3912 ciss_name_command_status(command_status));
3913 error = EIO;
3914 goto out;
3915 }
3916
3917 out:
3918 if (cr != NULL)
3919 ciss_release_request(cr);
3920 return(error);
3921 }
3922
3923 /************************************************************************
3924 * Handle rescanning all the logical volumes when a notify event
3925 * causes the drives to come online or offline.
3926 */
3927 static void
ciss_notify_rescan_logical(struct ciss_softc * sc)3928 ciss_notify_rescan_logical(struct ciss_softc *sc)
3929 {
3930 struct ciss_lun_report *cll;
3931 struct ciss_ldrive *ld;
3932 int i, j, ndrives;
3933
3934 /*
3935 * We must rescan all logical volumes to get the right logical
3936 * drive address.
3937 */
3938 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
3939 sc->ciss_cfg->max_logical_supported);
3940 if (cll == NULL)
3941 return;
3942
3943 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
3944
3945 /*
3946 * Delete any of the drives which were destroyed by the
3947 * firmware.
3948 */
3949 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
3950 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
3951 ld = &sc->ciss_logical[i][j];
3952
3953 if (ld->cl_update == 0)
3954 continue;
3955
3956 if (ld->cl_status != CISS_LD_ONLINE) {
3957 ciss_cam_rescan_target(sc, i, j);
3958 ld->cl_update = 0;
3959 if (ld->cl_ldrive)
3960 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
3961 if (ld->cl_lstatus)
3962 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
3963
3964 ld->cl_ldrive = NULL;
3965 ld->cl_lstatus = NULL;
3966 }
3967 }
3968 }
3969
3970 /*
3971 * Scan for new drives.
3972 */
3973 for (i = 0; i < ndrives; i++) {
3974 int bus, target;
3975
3976 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
3977 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
3978 ld = &sc->ciss_logical[bus][target];
3979
3980 if (ld->cl_update == 0)
3981 continue;
3982
3983 ld->cl_update = 0;
3984 ld->cl_address = cll->lun[i];
3985 ld->cl_controller = &sc->ciss_controllers[bus];
3986 if (ciss_identify_logical(sc, ld) == 0) {
3987 ciss_cam_rescan_target(sc, bus, target);
3988 }
3989 }
3990 free(cll, CISS_MALLOC_CLASS);
3991 }
3992
3993 /************************************************************************
3994 * Handle a notify event relating to the status of a logical drive.
3995 *
3996 * XXX need to be able to defer some of these to properly handle
3997 * calling the "ID Physical drive" command, unless the 'extended'
3998 * drive IDs are always in BIG_MAP format.
3999 */
4000 static void
ciss_notify_logical(struct ciss_softc * sc,struct ciss_notify * cn)4001 ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn)
4002 {
4003 struct ciss_ldrive *ld;
4004 int ostatus, bus, target;
4005
4006 debug_called(2);
4007
4008 bus = cn->device.physical.bus;
4009 target = cn->data.logical_status.logical_drive;
4010 ld = &sc->ciss_logical[bus][target];
4011
4012 switch (cn->subclass) {
4013 case CISS_NOTIFY_LOGICAL_STATUS:
4014 switch (cn->detail) {
4015 case 0:
4016 ciss_name_device(sc, bus, target);
4017 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n",
4018 cn->data.logical_status.logical_drive, ld->cl_name,
4019 ciss_name_ldrive_status(cn->data.logical_status.previous_state),
4020 ciss_name_ldrive_status(cn->data.logical_status.new_state),
4021 cn->data.logical_status.spare_state,
4022 "\20\1configured\2rebuilding\3failed\4in use\5available\n");
4023
4024 /*
4025 * Update our idea of the drive's status.
4026 */
4027 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state);
4028 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
4029 if (ld->cl_lstatus != NULL)
4030 ld->cl_lstatus->status = cn->data.logical_status.new_state;
4031
4032 /*
4033 * Have CAM rescan the drive if its status has changed.
4034 */
4035 if (ostatus != ld->cl_status) {
4036 ld->cl_update = 1;
4037 ciss_notify_rescan_logical(sc);
4038 }
4039
4040 break;
4041
4042 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */
4043 ciss_name_device(sc, bus, target);
4044 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n",
4045 cn->data.logical_status.logical_drive, ld->cl_name);
4046 ciss_accept_media(sc, ld);
4047
4048 ld->cl_update = 1;
4049 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
4050 ciss_notify_rescan_logical(sc);
4051 break;
4052
4053 case 2:
4054 case 3:
4055 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n",
4056 cn->data.rebuild_aborted.logical_drive,
4057 ld->cl_name,
4058 (cn->detail == 2) ? "read" : "write");
4059 break;
4060 }
4061 break;
4062
4063 case CISS_NOTIFY_LOGICAL_ERROR:
4064 if (cn->detail == 0) {
4065 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n",
4066 cn->data.io_error.logical_drive,
4067 ld->cl_name,
4068 cn->data.io_error.failure_bus,
4069 cn->data.io_error.failure_drive);
4070 /* XXX should we take the drive down at this point, or will we be told? */
4071 }
4072 break;
4073
4074 case CISS_NOTIFY_LOGICAL_SURFACE:
4075 if (cn->detail == 0)
4076 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n",
4077 cn->data.consistency_completed.logical_drive,
4078 ld->cl_name);
4079 break;
4080 }
4081 }
4082
4083 /************************************************************************
4084 * Handle a notify event relating to the status of a physical drive.
4085 */
4086 static void
ciss_notify_physical(struct ciss_softc * sc,struct ciss_notify * cn)4087 ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn)
4088 {
4089 }
4090
4091 /************************************************************************
4092 * Handle a notify event relating to the status of a physical drive.
4093 */
4094 static void
ciss_notify_hotplug(struct ciss_softc * sc,struct ciss_notify * cn)4095 ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn)
4096 {
4097 struct ciss_lun_report *cll = NULL;
4098 int bus, target;
4099
4100 switch (cn->subclass) {
4101 case CISS_NOTIFY_HOTPLUG_PHYSICAL:
4102 case CISS_NOTIFY_HOTPLUG_NONDISK:
4103 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number);
4104 target =
4105 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number);
4106
4107 if (cn->detail == 0) {
4108 /*
4109 * Mark the device offline so that it'll start producing selection
4110 * timeouts to the upper layer.
4111 */
4112 if ((bus >= 0) && (target >= 0))
4113 sc->ciss_physical[bus][target].cp_online = 0;
4114 } else {
4115 /*
4116 * Rescan the physical lun list for new items
4117 */
4118 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
4119 sc->ciss_cfg->max_physical_supported);
4120 if (cll == NULL) {
4121 ciss_printf(sc, "Warning, cannot get physical lun list\n");
4122 break;
4123 }
4124 ciss_filter_physical(sc, cll);
4125 }
4126 break;
4127
4128 default:
4129 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass);
4130 return;
4131 }
4132
4133 if (cll != NULL)
4134 free(cll, CISS_MALLOC_CLASS);
4135 }
4136
4137 /************************************************************************
4138 * Handle deferred processing of notify events. Notify events may need
4139 * sleep which is unsafe during an interrupt.
4140 */
4141 static void
ciss_notify_thread(void * arg)4142 ciss_notify_thread(void *arg)
4143 {
4144 struct ciss_softc *sc;
4145 struct ciss_request *cr;
4146 struct ciss_notify *cn;
4147
4148 sc = (struct ciss_softc *)arg;
4149 mtx_lock(&sc->ciss_mtx);
4150
4151 for (;;) {
4152 if (STAILQ_EMPTY(&sc->ciss_notify) != 0 &&
4153 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) {
4154 msleep(&sc->ciss_notify, &sc->ciss_mtx, PUSER, "idle", 0);
4155 }
4156
4157 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT)
4158 break;
4159
4160 cr = ciss_dequeue_notify(sc);
4161
4162 if (cr == NULL)
4163 panic("cr null");
4164 cn = (struct ciss_notify *)cr->cr_data;
4165
4166 switch (cn->class) {
4167 case CISS_NOTIFY_HOTPLUG:
4168 ciss_notify_hotplug(sc, cn);
4169 break;
4170 case CISS_NOTIFY_LOGICAL:
4171 ciss_notify_logical(sc, cn);
4172 break;
4173 case CISS_NOTIFY_PHYSICAL:
4174 ciss_notify_physical(sc, cn);
4175 break;
4176 }
4177
4178 ciss_release_request(cr);
4179 }
4180 sc->ciss_notify_thread = NULL;
4181 wakeup(&sc->ciss_notify_thread);
4182
4183 mtx_unlock(&sc->ciss_mtx);
4184 kproc_exit(0);
4185 }
4186
4187 /************************************************************************
4188 * Start the notification kernel thread.
4189 */
4190 static void
ciss_spawn_notify_thread(struct ciss_softc * sc)4191 ciss_spawn_notify_thread(struct ciss_softc *sc)
4192 {
4193
4194 if (kproc_create((void(*)(void *))ciss_notify_thread, sc,
4195 &sc->ciss_notify_thread, 0, 0, "ciss_notify%d",
4196 device_get_unit(sc->ciss_dev)))
4197 panic("Could not create notify thread\n");
4198 }
4199
4200 /************************************************************************
4201 * Kill the notification kernel thread.
4202 */
4203 static void
ciss_kill_notify_thread(struct ciss_softc * sc)4204 ciss_kill_notify_thread(struct ciss_softc *sc)
4205 {
4206
4207 if (sc->ciss_notify_thread == NULL)
4208 return;
4209
4210 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT;
4211 wakeup(&sc->ciss_notify);
4212 msleep(&sc->ciss_notify_thread, &sc->ciss_mtx, PUSER, "thtrm", 0);
4213 }
4214
4215 /************************************************************************
4216 * Print a request.
4217 */
4218 #ifdef DDB
4219 static void
ciss_print_request(struct ciss_request * cr)4220 ciss_print_request(struct ciss_request *cr)
4221 {
4222 struct ciss_softc *sc;
4223 struct ciss_command *cc;
4224 int i;
4225
4226 sc = cr->cr_sc;
4227 cc = cr->cr_cc;
4228
4229 ciss_printf(sc, "REQUEST @ %p\n", cr);
4230 ciss_printf(sc, " data %p/%d tag %d flags %b\n",
4231 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags,
4232 "\20\1mapped\2sleep\3poll\4dataout\5datain\n");
4233 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n",
4234 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag);
4235 switch(cc->header.address.mode.mode) {
4236 case CISS_HDR_ADDRESS_MODE_PERIPHERAL:
4237 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL:
4238 ciss_printf(sc, " physical bus %d target %d\n",
4239 cc->header.address.physical.bus, cc->header.address.physical.target);
4240 break;
4241 case CISS_HDR_ADDRESS_MODE_LOGICAL:
4242 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun);
4243 break;
4244 }
4245 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n",
4246 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" :
4247 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" :
4248 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??",
4249 cc->cdb.cdb_length,
4250 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" :
4251 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??",
4252 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" :
4253 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" :
4254 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" :
4255 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" :
4256 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??");
4257 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " ");
4258
4259 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) {
4260 /* XXX print error info */
4261 } else {
4262 /* since we don't use chained s/g, don't support it here */
4263 for (i = 0; i < cc->header.sg_in_list; i++) {
4264 if ((i % 4) == 0)
4265 ciss_printf(sc, " ");
4266 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length);
4267 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1)))
4268 printf("\n");
4269 }
4270 }
4271 }
4272 #endif
4273
4274 /************************************************************************
4275 * Print information about the status of a logical drive.
4276 */
4277 static void
ciss_print_ldrive(struct ciss_softc * sc,struct ciss_ldrive * ld)4278 ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld)
4279 {
4280 int bus, target, i;
4281
4282 if (ld->cl_lstatus == NULL) {
4283 printf("does not exist\n");
4284 return;
4285 }
4286
4287 /* print drive status */
4288 switch(ld->cl_lstatus->status) {
4289 case CISS_LSTATUS_OK:
4290 printf("online\n");
4291 break;
4292 case CISS_LSTATUS_INTERIM_RECOVERY:
4293 printf("in interim recovery mode\n");
4294 break;
4295 case CISS_LSTATUS_READY_RECOVERY:
4296 printf("ready to begin recovery\n");
4297 break;
4298 case CISS_LSTATUS_RECOVERING:
4299 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4300 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4301 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n",
4302 bus, target, ld->cl_lstatus->blocks_to_recover);
4303 break;
4304 case CISS_LSTATUS_EXPANDING:
4305 printf("being expanded, %u blocks remaining\n",
4306 ld->cl_lstatus->blocks_to_recover);
4307 break;
4308 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4309 printf("queued for expansion\n");
4310 break;
4311 case CISS_LSTATUS_FAILED:
4312 printf("queued for expansion\n");
4313 break;
4314 case CISS_LSTATUS_WRONG_PDRIVE:
4315 printf("wrong physical drive inserted\n");
4316 break;
4317 case CISS_LSTATUS_MISSING_PDRIVE:
4318 printf("missing a needed physical drive\n");
4319 break;
4320 case CISS_LSTATUS_BECOMING_READY:
4321 printf("becoming ready\n");
4322 break;
4323 }
4324
4325 /* print failed physical drives */
4326 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) {
4327 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]);
4328 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]);
4329 if (bus == -1)
4330 continue;
4331 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target,
4332 ld->cl_lstatus->drive_failure_map[i]);
4333 }
4334 }
4335
4336 #ifdef DDB
4337 #include <ddb/ddb.h>
4338 /************************************************************************
4339 * Print information about the controller/driver.
4340 */
4341 static void
ciss_print_adapter(struct ciss_softc * sc)4342 ciss_print_adapter(struct ciss_softc *sc)
4343 {
4344 int i, j;
4345
4346 ciss_printf(sc, "ADAPTER:\n");
4347 for (i = 0; i < CISSQ_COUNT; i++) {
4348 ciss_printf(sc, "%s %d/%d\n",
4349 i == 0 ? "free" :
4350 i == 1 ? "busy" : "complete",
4351 sc->ciss_qstat[i].q_length,
4352 sc->ciss_qstat[i].q_max);
4353 }
4354 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests);
4355 ciss_printf(sc, "flags %b\n", sc->ciss_flags,
4356 "\20\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n");
4357
4358 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
4359 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
4360 ciss_printf(sc, "LOGICAL DRIVE %d: ", i);
4361 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]);
4362 }
4363 }
4364
4365 /* XXX Should physical drives be printed out here? */
4366
4367 for (i = 1; i < sc->ciss_max_requests; i++)
4368 ciss_print_request(sc->ciss_request + i);
4369 }
4370
4371 /* DDB hook */
DB_COMMAND(ciss_prt,db_ciss_prt)4372 DB_COMMAND(ciss_prt, db_ciss_prt)
4373 {
4374 struct ciss_softc *sc;
4375 devclass_t dc;
4376 int maxciss, i;
4377
4378 dc = devclass_find("ciss");
4379 if ( dc == NULL ) {
4380 printf("%s: can't find devclass!\n", __func__);
4381 return;
4382 }
4383 maxciss = devclass_get_maxunit(dc);
4384 for (i = 0; i < maxciss; i++) {
4385 sc = devclass_get_softc(dc, i);
4386 ciss_print_adapter(sc);
4387 }
4388 }
4389 #endif
4390
4391 /************************************************************************
4392 * Return a name for a logical drive status value.
4393 */
4394 static const char *
ciss_name_ldrive_status(int status)4395 ciss_name_ldrive_status(int status)
4396 {
4397 switch (status) {
4398 case CISS_LSTATUS_OK:
4399 return("OK");
4400 case CISS_LSTATUS_FAILED:
4401 return("failed");
4402 case CISS_LSTATUS_NOT_CONFIGURED:
4403 return("not configured");
4404 case CISS_LSTATUS_INTERIM_RECOVERY:
4405 return("interim recovery");
4406 case CISS_LSTATUS_READY_RECOVERY:
4407 return("ready for recovery");
4408 case CISS_LSTATUS_RECOVERING:
4409 return("recovering");
4410 case CISS_LSTATUS_WRONG_PDRIVE:
4411 return("wrong physical drive inserted");
4412 case CISS_LSTATUS_MISSING_PDRIVE:
4413 return("missing physical drive");
4414 case CISS_LSTATUS_EXPANDING:
4415 return("expanding");
4416 case CISS_LSTATUS_BECOMING_READY:
4417 return("becoming ready");
4418 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4419 return("queued for expansion");
4420 }
4421 return("unknown status");
4422 }
4423
4424 /************************************************************************
4425 * Return an online/offline/nonexistent value for a logical drive
4426 * status value.
4427 */
4428 static int
ciss_decode_ldrive_status(int status)4429 ciss_decode_ldrive_status(int status)
4430 {
4431 switch(status) {
4432 case CISS_LSTATUS_NOT_CONFIGURED:
4433 return(CISS_LD_NONEXISTENT);
4434
4435 case CISS_LSTATUS_OK:
4436 case CISS_LSTATUS_INTERIM_RECOVERY:
4437 case CISS_LSTATUS_READY_RECOVERY:
4438 case CISS_LSTATUS_RECOVERING:
4439 case CISS_LSTATUS_EXPANDING:
4440 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4441 return(CISS_LD_ONLINE);
4442
4443 case CISS_LSTATUS_FAILED:
4444 case CISS_LSTATUS_WRONG_PDRIVE:
4445 case CISS_LSTATUS_MISSING_PDRIVE:
4446 case CISS_LSTATUS_BECOMING_READY:
4447 default:
4448 return(CISS_LD_OFFLINE);
4449 }
4450 }
4451
4452 /************************************************************************
4453 * Return a name for a logical drive's organisation.
4454 */
4455 static const char *
ciss_name_ldrive_org(int org)4456 ciss_name_ldrive_org(int org)
4457 {
4458 switch(org) {
4459 case CISS_LDRIVE_RAID0:
4460 return("RAID 0");
4461 case CISS_LDRIVE_RAID1:
4462 return("RAID 1(1+0)");
4463 case CISS_LDRIVE_RAID4:
4464 return("RAID 4");
4465 case CISS_LDRIVE_RAID5:
4466 return("RAID 5");
4467 case CISS_LDRIVE_RAID51:
4468 return("RAID 5+1");
4469 case CISS_LDRIVE_RAIDADG:
4470 return("RAID ADG");
4471 }
4472 return("unknown");
4473 }
4474
4475 /************************************************************************
4476 * Return a name for a command status value.
4477 */
4478 static const char *
ciss_name_command_status(int status)4479 ciss_name_command_status(int status)
4480 {
4481 switch(status) {
4482 case CISS_CMD_STATUS_SUCCESS:
4483 return("success");
4484 case CISS_CMD_STATUS_TARGET_STATUS:
4485 return("target status");
4486 case CISS_CMD_STATUS_DATA_UNDERRUN:
4487 return("data underrun");
4488 case CISS_CMD_STATUS_DATA_OVERRUN:
4489 return("data overrun");
4490 case CISS_CMD_STATUS_INVALID_COMMAND:
4491 return("invalid command");
4492 case CISS_CMD_STATUS_PROTOCOL_ERROR:
4493 return("protocol error");
4494 case CISS_CMD_STATUS_HARDWARE_ERROR:
4495 return("hardware error");
4496 case CISS_CMD_STATUS_CONNECTION_LOST:
4497 return("connection lost");
4498 case CISS_CMD_STATUS_ABORTED:
4499 return("aborted");
4500 case CISS_CMD_STATUS_ABORT_FAILED:
4501 return("abort failed");
4502 case CISS_CMD_STATUS_UNSOLICITED_ABORT:
4503 return("unsolicited abort");
4504 case CISS_CMD_STATUS_TIMEOUT:
4505 return("timeout");
4506 case CISS_CMD_STATUS_UNABORTABLE:
4507 return("unabortable");
4508 }
4509 return("unknown status");
4510 }
4511
4512 /************************************************************************
4513 * Handle an open on the control device.
4514 */
4515 static int
ciss_open(struct cdev * dev,int flags,int fmt,struct thread * p)4516 ciss_open(struct cdev *dev, int flags, int fmt, struct thread *p)
4517 {
4518 struct ciss_softc *sc;
4519
4520 debug_called(1);
4521
4522 sc = (struct ciss_softc *)dev->si_drv1;
4523
4524 /* we might want to veto if someone already has us open */
4525
4526 mtx_lock(&sc->ciss_mtx);
4527 sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN;
4528 mtx_unlock(&sc->ciss_mtx);
4529 return(0);
4530 }
4531
4532 /************************************************************************
4533 * Handle the last close on the control device.
4534 */
4535 static int
ciss_close(struct cdev * dev,int flags,int fmt,struct thread * p)4536 ciss_close(struct cdev *dev, int flags, int fmt, struct thread *p)
4537 {
4538 struct ciss_softc *sc;
4539
4540 debug_called(1);
4541
4542 sc = (struct ciss_softc *)dev->si_drv1;
4543
4544 mtx_lock(&sc->ciss_mtx);
4545 sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN;
4546 mtx_unlock(&sc->ciss_mtx);
4547 return (0);
4548 }
4549
4550 /********************************************************************************
4551 * Handle adapter-specific control operations.
4552 *
4553 * Note that the API here is compatible with the Linux driver, in order to
4554 * simplify the porting of Compaq's userland tools.
4555 */
4556 static int
ciss_ioctl(struct cdev * dev,u_long cmd,caddr_t addr,int32_t flag,struct thread * p)4557 ciss_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *p)
4558 {
4559 struct ciss_softc *sc;
4560 IOCTL_Command_struct *ioc = (IOCTL_Command_struct *)addr;
4561 #ifdef __amd64__
4562 IOCTL_Command_struct32 *ioc32 = (IOCTL_Command_struct32 *)addr;
4563 IOCTL_Command_struct ioc_swab;
4564 #endif
4565 int error;
4566
4567 debug_called(1);
4568
4569 sc = (struct ciss_softc *)dev->si_drv1;
4570 error = 0;
4571 mtx_lock(&sc->ciss_mtx);
4572
4573 switch(cmd) {
4574 case CCISS_GETQSTATS:
4575 {
4576 union ciss_statrequest *cr = (union ciss_statrequest *)addr;
4577
4578 switch (cr->cs_item) {
4579 case CISSQ_FREE:
4580 case CISSQ_NOTIFY:
4581 bcopy(&sc->ciss_qstat[cr->cs_item], &cr->cs_qstat,
4582 sizeof(struct ciss_qstat));
4583 break;
4584 default:
4585 error = ENOIOCTL;
4586 break;
4587 }
4588
4589 break;
4590 }
4591
4592 case CCISS_GETPCIINFO:
4593 {
4594 cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr;
4595
4596 pis->bus = pci_get_bus(sc->ciss_dev);
4597 pis->dev_fn = pci_get_slot(sc->ciss_dev);
4598 pis->board_id = (pci_get_subvendor(sc->ciss_dev) << 16) |
4599 pci_get_subdevice(sc->ciss_dev);
4600
4601 break;
4602 }
4603
4604 case CCISS_GETINTINFO:
4605 {
4606 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr;
4607
4608 cis->delay = sc->ciss_cfg->interrupt_coalesce_delay;
4609 cis->count = sc->ciss_cfg->interrupt_coalesce_count;
4610
4611 break;
4612 }
4613
4614 case CCISS_SETINTINFO:
4615 {
4616 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr;
4617
4618 if ((cis->delay == 0) && (cis->count == 0)) {
4619 error = EINVAL;
4620 break;
4621 }
4622
4623 /*
4624 * XXX apparently this is only safe if the controller is idle,
4625 * we should suspend it before doing this.
4626 */
4627 sc->ciss_cfg->interrupt_coalesce_delay = cis->delay;
4628 sc->ciss_cfg->interrupt_coalesce_count = cis->count;
4629
4630 if (ciss_update_config(sc))
4631 error = EIO;
4632
4633 /* XXX resume the controller here */
4634 break;
4635 }
4636
4637 case CCISS_GETNODENAME:
4638 bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr,
4639 sizeof(NodeName_type));
4640 break;
4641
4642 case CCISS_SETNODENAME:
4643 bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name,
4644 sizeof(NodeName_type));
4645 if (ciss_update_config(sc))
4646 error = EIO;
4647 break;
4648
4649 case CCISS_GETHEARTBEAT:
4650 *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat;
4651 break;
4652
4653 case CCISS_GETBUSTYPES:
4654 *(BusTypes_type *)addr = sc->ciss_cfg->bus_types;
4655 break;
4656
4657 case CCISS_GETFIRMVER:
4658 bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr,
4659 sizeof(FirmwareVer_type));
4660 break;
4661
4662 case CCISS_GETDRIVERVER:
4663 *(DriverVer_type *)addr = CISS_DRIVER_VERSION;
4664 break;
4665
4666 case CCISS_REVALIDVOLS:
4667 /*
4668 * This is a bit ugly; to do it "right" we really need
4669 * to find any disks that have changed, kick CAM off them,
4670 * then rescan only these disks. It'd be nice if they
4671 * a) told us which disk(s) they were going to play with,
4672 * and b) which ones had arrived. 8(
4673 */
4674 break;
4675
4676 #ifdef __amd64__
4677 case CCISS_PASSTHRU32:
4678 ioc_swab.LUN_info = ioc32->LUN_info;
4679 ioc_swab.Request = ioc32->Request;
4680 ioc_swab.error_info = ioc32->error_info;
4681 ioc_swab.buf_size = ioc32->buf_size;
4682 ioc_swab.buf = (u_int8_t *)(uintptr_t)ioc32->buf;
4683 ioc = &ioc_swab;
4684 /* FALLTHROUGH */
4685 #endif
4686
4687 case CCISS_PASSTHRU:
4688 error = ciss_user_command(sc, ioc);
4689 break;
4690
4691 default:
4692 debug(0, "unknown ioctl 0x%lx", cmd);
4693
4694 debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO);
4695 debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO);
4696 debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO);
4697 debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME);
4698 debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME);
4699 debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT);
4700 debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES);
4701 debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER);
4702 debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER);
4703 debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS);
4704 debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU);
4705
4706 error = ENOIOCTL;
4707 break;
4708 }
4709
4710 mtx_unlock(&sc->ciss_mtx);
4711 return(error);
4712 }
4713