FreeBSD/Linux Kernel Cross Reference
sys/dev/ciss/ciss.c
1 /*-
2 * Copyright (c) 2001 Michael Smith
3 * Copyright (c) 2004 Paul Saab
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25 * SUCH DAMAGE.
26 *
27 * $FreeBSD: releng/11.2/sys/dev/ciss/ciss.c 331722 2018-03-29 02:50:57Z eadler $
28 */
29
30 /*
31 * Common Interface for SCSI-3 Support driver.
32 *
33 * CISS claims to provide a common interface between a generic SCSI
34 * transport and an intelligent host adapter.
35 *
36 * This driver supports CISS as defined in the document "CISS Command
37 * Interface for SCSI-3 Support Open Specification", Version 1.04,
38 * Valence Number 1, dated 20001127, produced by Compaq Computer
39 * Corporation. This document appears to be a hastily and somewhat
40 * arbitrarlily cut-down version of a larger (and probably even more
41 * chaotic and inconsistent) Compaq internal document. Various
42 * details were also gleaned from Compaq's "cciss" driver for Linux.
43 *
44 * We provide a shim layer between the CISS interface and CAM,
45 * offloading most of the queueing and being-a-disk chores onto CAM.
46 * Entry to the driver is via the PCI bus attachment (ciss_probe,
47 * ciss_attach, etc) and via the CAM interface (ciss_cam_action,
48 * ciss_cam_poll). The Compaq CISS adapters are, however, poor SCSI
49 * citizens and we have to fake up some responses to get reasonable
50 * behaviour out of them. In addition, the CISS command set is by no
51 * means adequate to support the functionality of a RAID controller,
52 * and thus the supported Compaq adapters utilise portions of the
53 * control protocol from earlier Compaq adapter families.
54 *
55 * Note that we only support the "simple" transport layer over PCI.
56 * This interface (ab)uses the I2O register set (specifically the post
57 * queues) to exchange commands with the adapter. Other interfaces
58 * are available, but we aren't supposed to know about them, and it is
59 * dubious whether they would provide major performance improvements
60 * except under extreme load.
61 *
62 * Currently the only supported CISS adapters are the Compaq Smart
63 * Array 5* series (5300, 5i, 532). Even with only three adapters,
64 * Compaq still manage to have interface variations.
65 *
66 *
67 * Thanks must go to Fred Harris and Darryl DeVinney at Compaq, as
68 * well as Paul Saab at Yahoo! for their assistance in making this
69 * driver happen.
70 *
71 * More thanks must go to John Cagle at HP for the countless hours
72 * spent making this driver "work" with the MSA* series storage
73 * enclosures. Without his help (and nagging), this driver could not
74 * be used with these enclosures.
75 */
76
77 #include <sys/param.h>
78 #include <sys/systm.h>
79 #include <sys/malloc.h>
80 #include <sys/kernel.h>
81 #include <sys/bus.h>
82 #include <sys/conf.h>
83 #include <sys/stat.h>
84 #include <sys/kthread.h>
85 #include <sys/queue.h>
86 #include <sys/sysctl.h>
87
88 #include <cam/cam.h>
89 #include <cam/cam_ccb.h>
90 #include <cam/cam_periph.h>
91 #include <cam/cam_sim.h>
92 #include <cam/cam_xpt_sim.h>
93 #include <cam/scsi/scsi_all.h>
94 #include <cam/scsi/scsi_message.h>
95
96 #include <machine/bus.h>
97 #include <machine/endian.h>
98 #include <machine/resource.h>
99 #include <sys/rman.h>
100
101 #include <dev/pci/pcireg.h>
102 #include <dev/pci/pcivar.h>
103
104 #include <dev/ciss/cissreg.h>
105 #include <dev/ciss/cissio.h>
106 #include <dev/ciss/cissvar.h>
107
108 static MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data",
109 "ciss internal data buffers");
110
111 /* pci interface */
112 static int ciss_lookup(device_t dev);
113 static int ciss_probe(device_t dev);
114 static int ciss_attach(device_t dev);
115 static int ciss_detach(device_t dev);
116 static int ciss_shutdown(device_t dev);
117
118 /* (de)initialisation functions, control wrappers */
119 static int ciss_init_pci(struct ciss_softc *sc);
120 static int ciss_setup_msix(struct ciss_softc *sc);
121 static int ciss_init_perf(struct ciss_softc *sc);
122 static int ciss_wait_adapter(struct ciss_softc *sc);
123 static int ciss_flush_adapter(struct ciss_softc *sc);
124 static int ciss_init_requests(struct ciss_softc *sc);
125 static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs,
126 int nseg, int error);
127 static int ciss_identify_adapter(struct ciss_softc *sc);
128 static int ciss_init_logical(struct ciss_softc *sc);
129 static int ciss_init_physical(struct ciss_softc *sc);
130 static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll);
131 static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld);
132 static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld);
133 static int ciss_update_config(struct ciss_softc *sc);
134 static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld);
135 static void ciss_init_sysctl(struct ciss_softc *sc);
136 static void ciss_soft_reset(struct ciss_softc *sc);
137 static void ciss_free(struct ciss_softc *sc);
138 static void ciss_spawn_notify_thread(struct ciss_softc *sc);
139 static void ciss_kill_notify_thread(struct ciss_softc *sc);
140
141 /* request submission/completion */
142 static int ciss_start(struct ciss_request *cr);
143 static void ciss_done(struct ciss_softc *sc, cr_qhead_t *qh);
144 static void ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh);
145 static void ciss_intr(void *arg);
146 static void ciss_perf_intr(void *arg);
147 static void ciss_perf_msi_intr(void *arg);
148 static void ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh);
149 static int _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func);
150 static int ciss_synch_request(struct ciss_request *cr, int timeout);
151 static int ciss_poll_request(struct ciss_request *cr, int timeout);
152 static int ciss_wait_request(struct ciss_request *cr, int timeout);
153 #if 0
154 static int ciss_abort_request(struct ciss_request *cr);
155 #endif
156
157 /* request queueing */
158 static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp);
159 static void ciss_preen_command(struct ciss_request *cr);
160 static void ciss_release_request(struct ciss_request *cr);
161
162 /* request helpers */
163 static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
164 int opcode, void **bufp, size_t bufsize);
165 static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc);
166
167 /* DMA map/unmap */
168 static int ciss_map_request(struct ciss_request *cr);
169 static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs,
170 int nseg, int error);
171 static void ciss_unmap_request(struct ciss_request *cr);
172
173 /* CAM interface */
174 static int ciss_cam_init(struct ciss_softc *sc);
175 static void ciss_cam_rescan_target(struct ciss_softc *sc,
176 int bus, int target);
177 static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb);
178 static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
179 static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio);
180 static void ciss_cam_poll(struct cam_sim *sim);
181 static void ciss_cam_complete(struct ciss_request *cr);
182 static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio);
183 static int ciss_name_device(struct ciss_softc *sc, int bus, int target);
184
185 /* periodic status monitoring */
186 static void ciss_periodic(void *arg);
187 static void ciss_nop_complete(struct ciss_request *cr);
188 static void ciss_disable_adapter(struct ciss_softc *sc);
189 static void ciss_notify_event(struct ciss_softc *sc);
190 static void ciss_notify_complete(struct ciss_request *cr);
191 static int ciss_notify_abort(struct ciss_softc *sc);
192 static int ciss_notify_abort_bmic(struct ciss_softc *sc);
193 static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn);
194 static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn);
195 static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn);
196
197 /* debugging output */
198 static void ciss_print_request(struct ciss_request *cr);
199 static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld);
200 static const char *ciss_name_ldrive_status(int status);
201 static int ciss_decode_ldrive_status(int status);
202 static const char *ciss_name_ldrive_org(int org);
203 static const char *ciss_name_command_status(int status);
204
205 /*
206 * PCI bus interface.
207 */
208 static device_method_t ciss_methods[] = {
209 /* Device interface */
210 DEVMETHOD(device_probe, ciss_probe),
211 DEVMETHOD(device_attach, ciss_attach),
212 DEVMETHOD(device_detach, ciss_detach),
213 DEVMETHOD(device_shutdown, ciss_shutdown),
214 { 0, 0 }
215 };
216
217 static driver_t ciss_pci_driver = {
218 "ciss",
219 ciss_methods,
220 sizeof(struct ciss_softc)
221 };
222
223 static devclass_t ciss_devclass;
224 DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0);
225 MODULE_DEPEND(ciss, cam, 1, 1, 1);
226 MODULE_DEPEND(ciss, pci, 1, 1, 1);
227
228 /*
229 * Control device interface.
230 */
231 static d_open_t ciss_open;
232 static d_close_t ciss_close;
233 static d_ioctl_t ciss_ioctl;
234
235 static struct cdevsw ciss_cdevsw = {
236 .d_version = D_VERSION,
237 .d_flags = 0,
238 .d_open = ciss_open,
239 .d_close = ciss_close,
240 .d_ioctl = ciss_ioctl,
241 .d_name = "ciss",
242 };
243
244 /*
245 * This tunable can be set at boot time and controls whether physical devices
246 * that are marked hidden by the firmware should be exposed anyways.
247 */
248 static unsigned int ciss_expose_hidden_physical = 0;
249 TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical);
250
251 static unsigned int ciss_nop_message_heartbeat = 0;
252 TUNABLE_INT("hw.ciss.nop_message_heartbeat", &ciss_nop_message_heartbeat);
253
254 /*
255 * This tunable can force a particular transport to be used:
256 * <= 0 : use default
257 * 1 : force simple
258 * 2 : force performant
259 */
260 static int ciss_force_transport = 0;
261 TUNABLE_INT("hw.ciss.force_transport", &ciss_force_transport);
262
263 /*
264 * This tunable can force a particular interrupt delivery method to be used:
265 * <= 0 : use default
266 * 1 : force INTx
267 * 2 : force MSIX
268 */
269 static int ciss_force_interrupt = 0;
270 TUNABLE_INT("hw.ciss.force_interrupt", &ciss_force_interrupt);
271
272 /************************************************************************
273 * CISS adapters amazingly don't have a defined programming interface
274 * value. (One could say some very despairing things about PCI and
275 * people just not getting the general idea.) So we are forced to
276 * stick with matching against subvendor/subdevice, and thus have to
277 * be updated for every new CISS adapter that appears.
278 */
279 #define CISS_BOARD_UNKNWON 0
280 #define CISS_BOARD_SA5 1
281 #define CISS_BOARD_SA5B 2
282 #define CISS_BOARD_NOMSI (1<<4)
283 #define CISS_BOARD_SIMPLE (1<<5)
284
285 static struct
286 {
287 u_int16_t subvendor;
288 u_int16_t subdevice;
289 int flags;
290 char *desc;
291 } ciss_vendor_data[] = {
292 { 0x0e11, 0x4070, CISS_BOARD_SA5|CISS_BOARD_NOMSI|CISS_BOARD_SIMPLE,
293 "Compaq Smart Array 5300" },
294 { 0x0e11, 0x4080, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "Compaq Smart Array 5i" },
295 { 0x0e11, 0x4082, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "Compaq Smart Array 532" },
296 { 0x0e11, 0x4083, CISS_BOARD_SA5B|CISS_BOARD_NOMSI, "HP Smart Array 5312" },
297 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" },
298 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" },
299 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" },
300 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" },
301 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" },
302 { 0x103C, 0x3211, CISS_BOARD_SA5, "HP Smart Array E200i" },
303 { 0x103C, 0x3212, CISS_BOARD_SA5, "HP Smart Array E200" },
304 { 0x103C, 0x3213, CISS_BOARD_SA5, "HP Smart Array E200i" },
305 { 0x103C, 0x3214, CISS_BOARD_SA5, "HP Smart Array E200i" },
306 { 0x103C, 0x3215, CISS_BOARD_SA5, "HP Smart Array E200i" },
307 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" },
308 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" },
309 { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" },
310 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" },
311 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" },
312 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" },
313 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" },
314 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" },
315 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array P400" },
316 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array P400i" },
317 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" },
318 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array E500" },
319 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" },
320 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" },
321 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" },
322 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" },
323 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" },
324 { 0x103C, 0x323D, CISS_BOARD_SA5, "HP Smart Array P700m" },
325 { 0x103C, 0x3241, CISS_BOARD_SA5, "HP Smart Array P212" },
326 { 0x103C, 0x3243, CISS_BOARD_SA5, "HP Smart Array P410" },
327 { 0x103C, 0x3245, CISS_BOARD_SA5, "HP Smart Array P410i" },
328 { 0x103C, 0x3247, CISS_BOARD_SA5, "HP Smart Array P411" },
329 { 0x103C, 0x3249, CISS_BOARD_SA5, "HP Smart Array P812" },
330 { 0x103C, 0x324A, CISS_BOARD_SA5, "HP Smart Array P712m" },
331 { 0x103C, 0x324B, CISS_BOARD_SA5, "HP Smart Array" },
332 { 0x103C, 0x3350, CISS_BOARD_SA5, "HP Smart Array P222" },
333 { 0x103C, 0x3351, CISS_BOARD_SA5, "HP Smart Array P420" },
334 { 0x103C, 0x3352, CISS_BOARD_SA5, "HP Smart Array P421" },
335 { 0x103C, 0x3353, CISS_BOARD_SA5, "HP Smart Array P822" },
336 { 0x103C, 0x3354, CISS_BOARD_SA5, "HP Smart Array P420i" },
337 { 0x103C, 0x3355, CISS_BOARD_SA5, "HP Smart Array P220i" },
338 { 0x103C, 0x3356, CISS_BOARD_SA5, "HP Smart Array P721m" },
339 { 0x103C, 0x1920, CISS_BOARD_SA5, "HP Smart Array P430i" },
340 { 0x103C, 0x1921, CISS_BOARD_SA5, "HP Smart Array P830i" },
341 { 0x103C, 0x1922, CISS_BOARD_SA5, "HP Smart Array P430" },
342 { 0x103C, 0x1923, CISS_BOARD_SA5, "HP Smart Array P431" },
343 { 0x103C, 0x1924, CISS_BOARD_SA5, "HP Smart Array P830" },
344 { 0x103C, 0x1926, CISS_BOARD_SA5, "HP Smart Array P731m" },
345 { 0x103C, 0x1928, CISS_BOARD_SA5, "HP Smart Array P230i" },
346 { 0x103C, 0x1929, CISS_BOARD_SA5, "HP Smart Array P530" },
347 { 0x103C, 0x192A, CISS_BOARD_SA5, "HP Smart Array P531" },
348 { 0x103C, 0x21BD, CISS_BOARD_SA5, "HP Smart Array P244br" },
349 { 0x103C, 0x21BE, CISS_BOARD_SA5, "HP Smart Array P741m" },
350 { 0x103C, 0x21BF, CISS_BOARD_SA5, "HP Smart Array H240ar" },
351 { 0x103C, 0x21C0, CISS_BOARD_SA5, "HP Smart Array P440ar" },
352 { 0x103C, 0x21C1, CISS_BOARD_SA5, "HP Smart Array P840ar" },
353 { 0x103C, 0x21C2, CISS_BOARD_SA5, "HP Smart Array P440" },
354 { 0x103C, 0x21C3, CISS_BOARD_SA5, "HP Smart Array P441" },
355 { 0x103C, 0x21C5, CISS_BOARD_SA5, "HP Smart Array P841" },
356 { 0x103C, 0x21C6, CISS_BOARD_SA5, "HP Smart Array H244br" },
357 { 0x103C, 0x21C7, CISS_BOARD_SA5, "HP Smart Array H240" },
358 { 0x103C, 0x21C8, CISS_BOARD_SA5, "HP Smart Array H241" },
359 { 0x103C, 0x21CA, CISS_BOARD_SA5, "HP Smart Array P246br" },
360 { 0x103C, 0x21CB, CISS_BOARD_SA5, "HP Smart Array P840" },
361 { 0x103C, 0x21CC, CISS_BOARD_SA5, "HP Smart Array TBD" },
362 { 0x103C, 0x21CD, CISS_BOARD_SA5, "HP Smart Array P240nr" },
363 { 0x103C, 0x21CE, CISS_BOARD_SA5, "HP Smart Array H240nr" },
364 { 0, 0, 0, NULL }
365 };
366
367 /************************************************************************
368 * Find a match for the device in our list of known adapters.
369 */
370 static int
371 ciss_lookup(device_t dev)
372 {
373 int i;
374
375 for (i = 0; ciss_vendor_data[i].desc != NULL; i++)
376 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) &&
377 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) {
378 return(i);
379 }
380 return(-1);
381 }
382
383 /************************************************************************
384 * Match a known CISS adapter.
385 */
386 static int
387 ciss_probe(device_t dev)
388 {
389 int i;
390
391 i = ciss_lookup(dev);
392 if (i != -1) {
393 device_set_desc(dev, ciss_vendor_data[i].desc);
394 return(BUS_PROBE_DEFAULT);
395 }
396 return(ENOENT);
397 }
398
399 /************************************************************************
400 * Attach the driver to this adapter.
401 */
402 static int
403 ciss_attach(device_t dev)
404 {
405 struct ciss_softc *sc;
406 int error;
407
408 debug_called(1);
409
410 #ifdef CISS_DEBUG
411 /* print structure/union sizes */
412 debug_struct(ciss_command);
413 debug_struct(ciss_header);
414 debug_union(ciss_device_address);
415 debug_struct(ciss_cdb);
416 debug_struct(ciss_report_cdb);
417 debug_struct(ciss_notify_cdb);
418 debug_struct(ciss_notify);
419 debug_struct(ciss_message_cdb);
420 debug_struct(ciss_error_info_pointer);
421 debug_struct(ciss_error_info);
422 debug_struct(ciss_sg_entry);
423 debug_struct(ciss_config_table);
424 debug_struct(ciss_bmic_cdb);
425 debug_struct(ciss_bmic_id_ldrive);
426 debug_struct(ciss_bmic_id_lstatus);
427 debug_struct(ciss_bmic_id_table);
428 debug_struct(ciss_bmic_id_pdrive);
429 debug_struct(ciss_bmic_blink_pdrive);
430 debug_struct(ciss_bmic_flush_cache);
431 debug_const(CISS_MAX_REQUESTS);
432 debug_const(CISS_MAX_LOGICAL);
433 debug_const(CISS_INTERRUPT_COALESCE_DELAY);
434 debug_const(CISS_INTERRUPT_COALESCE_COUNT);
435 debug_const(CISS_COMMAND_ALLOC_SIZE);
436 debug_const(CISS_COMMAND_SG_LENGTH);
437
438 debug_type(cciss_pci_info_struct);
439 debug_type(cciss_coalint_struct);
440 debug_type(cciss_coalint_struct);
441 debug_type(NodeName_type);
442 debug_type(NodeName_type);
443 debug_type(Heartbeat_type);
444 debug_type(BusTypes_type);
445 debug_type(FirmwareVer_type);
446 debug_type(DriverVer_type);
447 debug_type(IOCTL_Command_struct);
448 #endif
449
450 sc = device_get_softc(dev);
451 sc->ciss_dev = dev;
452 mtx_init(&sc->ciss_mtx, "cissmtx", NULL, MTX_DEF);
453 callout_init_mtx(&sc->ciss_periodic, &sc->ciss_mtx, 0);
454
455 /*
456 * Do PCI-specific init.
457 */
458 if ((error = ciss_init_pci(sc)) != 0)
459 goto out;
460
461 /*
462 * Initialise driver queues.
463 */
464 ciss_initq_free(sc);
465 ciss_initq_notify(sc);
466
467 /*
468 * Initialize device sysctls.
469 */
470 ciss_init_sysctl(sc);
471
472 /*
473 * Initialise command/request pool.
474 */
475 if ((error = ciss_init_requests(sc)) != 0)
476 goto out;
477
478 /*
479 * Get adapter information.
480 */
481 if ((error = ciss_identify_adapter(sc)) != 0)
482 goto out;
483
484 /*
485 * Find all the physical devices.
486 */
487 if ((error = ciss_init_physical(sc)) != 0)
488 goto out;
489
490 /*
491 * Build our private table of logical devices.
492 */
493 if ((error = ciss_init_logical(sc)) != 0)
494 goto out;
495
496 /*
497 * Enable interrupts so that the CAM scan can complete.
498 */
499 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc);
500
501 /*
502 * Initialise the CAM interface.
503 */
504 if ((error = ciss_cam_init(sc)) != 0)
505 goto out;
506
507 /*
508 * Start the heartbeat routine and event chain.
509 */
510 ciss_periodic(sc);
511
512 /*
513 * Create the control device.
514 */
515 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev),
516 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
517 "ciss%d", device_get_unit(sc->ciss_dev));
518 sc->ciss_dev_t->si_drv1 = sc;
519
520 /*
521 * The adapter is running; synchronous commands can now sleep
522 * waiting for an interrupt to signal completion.
523 */
524 sc->ciss_flags |= CISS_FLAG_RUNNING;
525
526 ciss_spawn_notify_thread(sc);
527
528 error = 0;
529 out:
530 if (error != 0) {
531 /* ciss_free() expects the mutex to be held */
532 mtx_lock(&sc->ciss_mtx);
533 ciss_free(sc);
534 }
535 return(error);
536 }
537
538 /************************************************************************
539 * Detach the driver from this adapter.
540 */
541 static int
542 ciss_detach(device_t dev)
543 {
544 struct ciss_softc *sc = device_get_softc(dev);
545
546 debug_called(1);
547
548 mtx_lock(&sc->ciss_mtx);
549 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) {
550 mtx_unlock(&sc->ciss_mtx);
551 return (EBUSY);
552 }
553
554 /* flush adapter cache */
555 ciss_flush_adapter(sc);
556
557 /* release all resources. The mutex is released and freed here too. */
558 ciss_free(sc);
559
560 return(0);
561 }
562
563 /************************************************************************
564 * Prepare adapter for system shutdown.
565 */
566 static int
567 ciss_shutdown(device_t dev)
568 {
569 struct ciss_softc *sc = device_get_softc(dev);
570
571 debug_called(1);
572
573 mtx_lock(&sc->ciss_mtx);
574 /* flush adapter cache */
575 ciss_flush_adapter(sc);
576
577 if (sc->ciss_soft_reset)
578 ciss_soft_reset(sc);
579 mtx_unlock(&sc->ciss_mtx);
580
581 return(0);
582 }
583
584 static void
585 ciss_init_sysctl(struct ciss_softc *sc)
586 {
587
588 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev),
589 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)),
590 OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, "");
591 }
592
593 /************************************************************************
594 * Perform PCI-specific attachment actions.
595 */
596 static int
597 ciss_init_pci(struct ciss_softc *sc)
598 {
599 uintptr_t cbase, csize, cofs;
600 uint32_t method, supported_methods;
601 int error, sqmask, i;
602 void *intr;
603
604 debug_called(1);
605
606 /*
607 * Work out adapter type.
608 */
609 i = ciss_lookup(sc->ciss_dev);
610 if (i < 0) {
611 ciss_printf(sc, "unknown adapter type\n");
612 return (ENXIO);
613 }
614
615 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) {
616 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5;
617 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) {
618 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5B;
619 } else {
620 /*
621 * XXX Big hammer, masks/unmasks all possible interrupts. This should
622 * work on all hardware variants. Need to add code to handle the
623 * "controller crashed" interrupt bit that this unmasks.
624 */
625 sqmask = ~0;
626 }
627
628 /*
629 * Allocate register window first (we need this to find the config
630 * struct).
631 */
632 error = ENXIO;
633 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS;
634 if ((sc->ciss_regs_resource =
635 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
636 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) {
637 ciss_printf(sc, "can't allocate register window\n");
638 return(ENXIO);
639 }
640 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource);
641 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource);
642
643 /*
644 * Find the BAR holding the config structure. If it's not the one
645 * we already mapped for registers, map it too.
646 */
647 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff;
648 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) {
649 if ((sc->ciss_cfg_resource =
650 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
651 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) {
652 ciss_printf(sc, "can't allocate config window\n");
653 return(ENXIO);
654 }
655 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource);
656 csize = rman_get_end(sc->ciss_cfg_resource) -
657 rman_get_start(sc->ciss_cfg_resource) + 1;
658 } else {
659 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource);
660 csize = rman_get_end(sc->ciss_regs_resource) -
661 rman_get_start(sc->ciss_regs_resource) + 1;
662 }
663 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF);
664
665 /*
666 * Use the base/size/offset values we just calculated to
667 * sanity-check the config structure. If it's OK, point to it.
668 */
669 if ((cofs + sizeof(struct ciss_config_table)) > csize) {
670 ciss_printf(sc, "config table outside window\n");
671 return(ENXIO);
672 }
673 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs);
674 debug(1, "config struct at %p", sc->ciss_cfg);
675
676 /*
677 * Calculate the number of request structures/commands we are
678 * going to provide for this adapter.
679 */
680 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands);
681
682 /*
683 * Validate the config structure. If we supported other transport
684 * methods, we could select amongst them at this point in time.
685 */
686 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) {
687 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n",
688 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1],
689 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]);
690 return(ENXIO);
691 }
692
693 /*
694 * Select the mode of operation, prefer Performant.
695 */
696 if (!(sc->ciss_cfg->supported_methods &
697 (CISS_TRANSPORT_METHOD_SIMPLE | CISS_TRANSPORT_METHOD_PERF))) {
698 ciss_printf(sc, "No supported transport layers: 0x%x\n",
699 sc->ciss_cfg->supported_methods);
700 }
701
702 switch (ciss_force_transport) {
703 case 1:
704 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
705 break;
706 case 2:
707 supported_methods = CISS_TRANSPORT_METHOD_PERF;
708 break;
709 default:
710 /*
711 * Override the capabilities of the BOARD and specify SIMPLE
712 * MODE
713 */
714 if (ciss_vendor_data[i].flags & CISS_BOARD_SIMPLE)
715 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
716 else
717 supported_methods = sc->ciss_cfg->supported_methods;
718 break;
719 }
720
721 setup:
722 if ((supported_methods & CISS_TRANSPORT_METHOD_PERF) != 0) {
723 method = CISS_TRANSPORT_METHOD_PERF;
724 sc->ciss_perf = (struct ciss_perf_config *)(cbase + cofs +
725 sc->ciss_cfg->transport_offset);
726 if (ciss_init_perf(sc)) {
727 supported_methods &= ~method;
728 goto setup;
729 }
730 } else if (supported_methods & CISS_TRANSPORT_METHOD_SIMPLE) {
731 method = CISS_TRANSPORT_METHOD_SIMPLE;
732 } else {
733 ciss_printf(sc, "No supported transport methods: 0x%x\n",
734 sc->ciss_cfg->supported_methods);
735 return(ENXIO);
736 }
737
738 /*
739 * Tell it we're using the low 4GB of RAM. Set the default interrupt
740 * coalescing options.
741 */
742 sc->ciss_cfg->requested_method = method;
743 sc->ciss_cfg->command_physlimit = 0;
744 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY;
745 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT;
746
747 #ifdef __i386__
748 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH;
749 #endif
750
751 if (ciss_update_config(sc)) {
752 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n",
753 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR));
754 return(ENXIO);
755 }
756 if ((sc->ciss_cfg->active_method & method) == 0) {
757 supported_methods &= ~method;
758 if (supported_methods == 0) {
759 ciss_printf(sc, "adapter refuses to go into available transports "
760 "mode (0x%x, 0x%x)\n", supported_methods,
761 sc->ciss_cfg->active_method);
762 return(ENXIO);
763 } else
764 goto setup;
765 }
766
767 /*
768 * Wait for the adapter to come ready.
769 */
770 if ((error = ciss_wait_adapter(sc)) != 0)
771 return(error);
772
773 /* Prepare to possibly use MSIX and/or PERFORMANT interrupts. Normal
774 * interrupts have a rid of 0, this will be overridden if MSIX is used.
775 */
776 sc->ciss_irq_rid[0] = 0;
777 if (method == CISS_TRANSPORT_METHOD_PERF) {
778 ciss_printf(sc, "PERFORMANT Transport\n");
779 if ((ciss_force_interrupt != 1) && (ciss_setup_msix(sc) == 0)) {
780 intr = ciss_perf_msi_intr;
781 } else {
782 intr = ciss_perf_intr;
783 }
784 /* XXX The docs say that the 0x01 bit is only for SAS controllers.
785 * Unfortunately, there is no good way to know if this is a SAS
786 * controller. Hopefully enabling this bit universally will work OK.
787 * It seems to work fine for SA6i controllers.
788 */
789 sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_OPQ | CISS_TL_PERF_INTR_MSI;
790
791 } else {
792 ciss_printf(sc, "SIMPLE Transport\n");
793 /* MSIX doesn't seem to work in SIMPLE mode, only enable if it forced */
794 if (ciss_force_interrupt == 2)
795 /* If this fails, we automatically revert to INTx */
796 ciss_setup_msix(sc);
797 sc->ciss_perf = NULL;
798 intr = ciss_intr;
799 sc->ciss_interrupt_mask = sqmask;
800 }
801
802 /*
803 * Turn off interrupts before we go routing anything.
804 */
805 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
806
807 /*
808 * Allocate and set up our interrupt.
809 */
810 if ((sc->ciss_irq_resource =
811 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid[0],
812 RF_ACTIVE | RF_SHAREABLE)) == NULL) {
813 ciss_printf(sc, "can't allocate interrupt\n");
814 return(ENXIO);
815 }
816
817 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource,
818 INTR_TYPE_CAM|INTR_MPSAFE, NULL, intr, sc,
819 &sc->ciss_intr)) {
820 ciss_printf(sc, "can't set up interrupt\n");
821 return(ENXIO);
822 }
823
824 /*
825 * Allocate the parent bus DMA tag appropriate for our PCI
826 * interface.
827 *
828 * Note that "simple" adapters can only address within a 32-bit
829 * span.
830 */
831 if (bus_dma_tag_create(bus_get_dma_tag(sc->ciss_dev),/* PCI parent */
832 1, 0, /* alignment, boundary */
833 BUS_SPACE_MAXADDR, /* lowaddr */
834 BUS_SPACE_MAXADDR, /* highaddr */
835 NULL, NULL, /* filter, filterarg */
836 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
837 BUS_SPACE_UNRESTRICTED, /* nsegments */
838 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
839 0, /* flags */
840 NULL, NULL, /* lockfunc, lockarg */
841 &sc->ciss_parent_dmat)) {
842 ciss_printf(sc, "can't allocate parent DMA tag\n");
843 return(ENOMEM);
844 }
845
846 /*
847 * Create DMA tag for mapping buffers into adapter-addressable
848 * space.
849 */
850 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
851 1, 0, /* alignment, boundary */
852 BUS_SPACE_MAXADDR, /* lowaddr */
853 BUS_SPACE_MAXADDR, /* highaddr */
854 NULL, NULL, /* filter, filterarg */
855 (CISS_MAX_SG_ELEMENTS - 1) * PAGE_SIZE, /* maxsize */
856 CISS_MAX_SG_ELEMENTS, /* nsegments */
857 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
858 BUS_DMA_ALLOCNOW, /* flags */
859 busdma_lock_mutex, &sc->ciss_mtx, /* lockfunc, lockarg */
860 &sc->ciss_buffer_dmat)) {
861 ciss_printf(sc, "can't allocate buffer DMA tag\n");
862 return(ENOMEM);
863 }
864 return(0);
865 }
866
867 /************************************************************************
868 * Setup MSI/MSIX operation (Performant only)
869 * Four interrupts are available, but we only use 1 right now. If MSI-X
870 * isn't avaialble, try using MSI instead.
871 */
872 static int
873 ciss_setup_msix(struct ciss_softc *sc)
874 {
875 int val, i;
876
877 /* Weed out devices that don't actually support MSI */
878 i = ciss_lookup(sc->ciss_dev);
879 if (ciss_vendor_data[i].flags & CISS_BOARD_NOMSI)
880 return (EINVAL);
881
882 /*
883 * Only need to use the minimum number of MSI vectors, as the driver
884 * doesn't support directed MSIX interrupts.
885 */
886 val = pci_msix_count(sc->ciss_dev);
887 if (val < CISS_MSI_COUNT) {
888 val = pci_msi_count(sc->ciss_dev);
889 device_printf(sc->ciss_dev, "got %d MSI messages]\n", val);
890 if (val < CISS_MSI_COUNT)
891 return (EINVAL);
892 }
893 val = MIN(val, CISS_MSI_COUNT);
894 if (pci_alloc_msix(sc->ciss_dev, &val) != 0) {
895 if (pci_alloc_msi(sc->ciss_dev, &val) != 0)
896 return (EINVAL);
897 }
898
899 sc->ciss_msi = val;
900 if (bootverbose)
901 ciss_printf(sc, "Using %d MSIX interrupt%s\n", val,
902 (val != 1) ? "s" : "");
903
904 for (i = 0; i < val; i++)
905 sc->ciss_irq_rid[i] = i + 1;
906
907 return (0);
908
909 }
910
911 /************************************************************************
912 * Setup the Performant structures.
913 */
914 static int
915 ciss_init_perf(struct ciss_softc *sc)
916 {
917 struct ciss_perf_config *pc = sc->ciss_perf;
918 int reply_size;
919
920 /*
921 * Create the DMA tag for the reply queue.
922 */
923 reply_size = sizeof(uint64_t) * sc->ciss_max_requests;
924 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
925 1, 0, /* alignment, boundary */
926 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
927 BUS_SPACE_MAXADDR, /* highaddr */
928 NULL, NULL, /* filter, filterarg */
929 reply_size, 1, /* maxsize, nsegments */
930 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
931 0, /* flags */
932 NULL, NULL, /* lockfunc, lockarg */
933 &sc->ciss_reply_dmat)) {
934 ciss_printf(sc, "can't allocate reply DMA tag\n");
935 return(ENOMEM);
936 }
937 /*
938 * Allocate memory and make it available for DMA.
939 */
940 if (bus_dmamem_alloc(sc->ciss_reply_dmat, (void **)&sc->ciss_reply,
941 BUS_DMA_NOWAIT, &sc->ciss_reply_map)) {
942 ciss_printf(sc, "can't allocate reply memory\n");
943 return(ENOMEM);
944 }
945 bus_dmamap_load(sc->ciss_reply_dmat, sc->ciss_reply_map, sc->ciss_reply,
946 reply_size, ciss_command_map_helper, &sc->ciss_reply_phys, 0);
947 bzero(sc->ciss_reply, reply_size);
948
949 sc->ciss_cycle = 0x1;
950 sc->ciss_rqidx = 0;
951
952 /*
953 * Preload the fetch table with common command sizes. This allows the
954 * hardware to not waste bus cycles for typical i/o commands, but also not
955 * tax the driver to be too exact in choosing sizes. The table is optimized
956 * for page-aligned i/o's, but since most i/o comes from the various pagers,
957 * it's a reasonable assumption to make.
958 */
959 pc->fetch_count[CISS_SG_FETCH_NONE] = (sizeof(struct ciss_command) + 15) / 16;
960 pc->fetch_count[CISS_SG_FETCH_1] =
961 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 1 + 15) / 16;
962 pc->fetch_count[CISS_SG_FETCH_2] =
963 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 2 + 15) / 16;
964 pc->fetch_count[CISS_SG_FETCH_4] =
965 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 4 + 15) / 16;
966 pc->fetch_count[CISS_SG_FETCH_8] =
967 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 8 + 15) / 16;
968 pc->fetch_count[CISS_SG_FETCH_16] =
969 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 16 + 15) / 16;
970 pc->fetch_count[CISS_SG_FETCH_32] =
971 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 32 + 15) / 16;
972 pc->fetch_count[CISS_SG_FETCH_MAX] = (CISS_COMMAND_ALLOC_SIZE + 15) / 16;
973
974 pc->rq_size = sc->ciss_max_requests; /* XXX less than the card supports? */
975 pc->rq_count = 1; /* XXX Hardcode for a single queue */
976 pc->rq_bank_hi = 0;
977 pc->rq_bank_lo = 0;
978 pc->rq[0].rq_addr_hi = 0x0;
979 pc->rq[0].rq_addr_lo = sc->ciss_reply_phys;
980
981 return(0);
982 }
983
984 /************************************************************************
985 * Wait for the adapter to come ready.
986 */
987 static int
988 ciss_wait_adapter(struct ciss_softc *sc)
989 {
990 int i;
991
992 debug_called(1);
993
994 /*
995 * Wait for the adapter to come ready.
996 */
997 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) {
998 ciss_printf(sc, "waiting for adapter to come ready...\n");
999 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) {
1000 DELAY(1000000); /* one second */
1001 if (i > 30) {
1002 ciss_printf(sc, "timed out waiting for adapter to come ready\n");
1003 return(EIO);
1004 }
1005 }
1006 }
1007 return(0);
1008 }
1009
1010 /************************************************************************
1011 * Flush the adapter cache.
1012 */
1013 static int
1014 ciss_flush_adapter(struct ciss_softc *sc)
1015 {
1016 struct ciss_request *cr;
1017 struct ciss_bmic_flush_cache *cbfc;
1018 int error, command_status;
1019
1020 debug_called(1);
1021
1022 cr = NULL;
1023 cbfc = NULL;
1024
1025 /*
1026 * Build a BMIC request to flush the cache. We don't disable
1027 * it, as we may be going to do more I/O (eg. we are emulating
1028 * the Synchronise Cache command).
1029 */
1030 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
1031 error = ENOMEM;
1032 goto out;
1033 }
1034 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE,
1035 (void **)&cbfc, sizeof(*cbfc))) != 0)
1036 goto out;
1037
1038 /*
1039 * Submit the request and wait for it to complete.
1040 */
1041 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1042 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error);
1043 goto out;
1044 }
1045
1046 /*
1047 * Check response.
1048 */
1049 ciss_report_request(cr, &command_status, NULL);
1050 switch(command_status) {
1051 case CISS_CMD_STATUS_SUCCESS:
1052 break;
1053 default:
1054 ciss_printf(sc, "error flushing cache (%s)\n",
1055 ciss_name_command_status(command_status));
1056 error = EIO;
1057 goto out;
1058 }
1059
1060 out:
1061 if (cbfc != NULL)
1062 free(cbfc, CISS_MALLOC_CLASS);
1063 if (cr != NULL)
1064 ciss_release_request(cr);
1065 return(error);
1066 }
1067
1068 static void
1069 ciss_soft_reset(struct ciss_softc *sc)
1070 {
1071 struct ciss_request *cr = NULL;
1072 struct ciss_command *cc;
1073 int i, error = 0;
1074
1075 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1076 /* only reset proxy controllers */
1077 if (sc->ciss_controllers[i].physical.bus == 0)
1078 continue;
1079
1080 if ((error = ciss_get_request(sc, &cr)) != 0)
1081 break;
1082
1083 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET,
1084 NULL, 0)) != 0)
1085 break;
1086
1087 cc = cr->cr_cc;
1088 cc->header.address = sc->ciss_controllers[i];
1089
1090 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0)
1091 break;
1092
1093 ciss_release_request(cr);
1094 }
1095
1096 if (error)
1097 ciss_printf(sc, "error resetting controller (%d)\n", error);
1098
1099 if (cr != NULL)
1100 ciss_release_request(cr);
1101 }
1102
1103 /************************************************************************
1104 * Allocate memory for the adapter command structures, initialise
1105 * the request structures.
1106 *
1107 * Note that the entire set of commands are allocated in a single
1108 * contiguous slab.
1109 */
1110 static int
1111 ciss_init_requests(struct ciss_softc *sc)
1112 {
1113 struct ciss_request *cr;
1114 int i;
1115
1116 debug_called(1);
1117
1118 if (bootverbose)
1119 ciss_printf(sc, "using %d of %d available commands\n",
1120 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands);
1121
1122 /*
1123 * Create the DMA tag for commands.
1124 */
1125 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
1126 32, 0, /* alignment, boundary */
1127 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1128 BUS_SPACE_MAXADDR, /* highaddr */
1129 NULL, NULL, /* filter, filterarg */
1130 CISS_COMMAND_ALLOC_SIZE *
1131 sc->ciss_max_requests, 1, /* maxsize, nsegments */
1132 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1133 0, /* flags */
1134 NULL, NULL, /* lockfunc, lockarg */
1135 &sc->ciss_command_dmat)) {
1136 ciss_printf(sc, "can't allocate command DMA tag\n");
1137 return(ENOMEM);
1138 }
1139 /*
1140 * Allocate memory and make it available for DMA.
1141 */
1142 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command,
1143 BUS_DMA_NOWAIT, &sc->ciss_command_map)) {
1144 ciss_printf(sc, "can't allocate command memory\n");
1145 return(ENOMEM);
1146 }
1147 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map,sc->ciss_command,
1148 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests,
1149 ciss_command_map_helper, &sc->ciss_command_phys, 0);
1150 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests);
1151
1152 /*
1153 * Set up the request and command structures, push requests onto
1154 * the free queue.
1155 */
1156 for (i = 1; i < sc->ciss_max_requests; i++) {
1157 cr = &sc->ciss_request[i];
1158 cr->cr_sc = sc;
1159 cr->cr_tag = i;
1160 cr->cr_cc = (struct ciss_command *)((uintptr_t)sc->ciss_command +
1161 CISS_COMMAND_ALLOC_SIZE * i);
1162 cr->cr_ccphys = sc->ciss_command_phys + CISS_COMMAND_ALLOC_SIZE * i;
1163 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap);
1164 ciss_enqueue_free(cr);
1165 }
1166 return(0);
1167 }
1168
1169 static void
1170 ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1171 {
1172 uint32_t *addr;
1173
1174 addr = arg;
1175 *addr = segs[0].ds_addr;
1176 }
1177
1178 /************************************************************************
1179 * Identify the adapter, print some information about it.
1180 */
1181 static int
1182 ciss_identify_adapter(struct ciss_softc *sc)
1183 {
1184 struct ciss_request *cr;
1185 int error, command_status;
1186
1187 debug_called(1);
1188
1189 cr = NULL;
1190
1191 /*
1192 * Get a request, allocate storage for the adapter data.
1193 */
1194 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR,
1195 (void **)&sc->ciss_id,
1196 sizeof(*sc->ciss_id))) != 0)
1197 goto out;
1198
1199 /*
1200 * Submit the request and wait for it to complete.
1201 */
1202 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1203 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error);
1204 goto out;
1205 }
1206
1207 /*
1208 * Check response.
1209 */
1210 ciss_report_request(cr, &command_status, NULL);
1211 switch(command_status) {
1212 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1213 break;
1214 case CISS_CMD_STATUS_DATA_UNDERRUN:
1215 case CISS_CMD_STATUS_DATA_OVERRUN:
1216 ciss_printf(sc, "data over/underrun reading adapter information\n");
1217 default:
1218 ciss_printf(sc, "error reading adapter information (%s)\n",
1219 ciss_name_command_status(command_status));
1220 error = EIO;
1221 goto out;
1222 }
1223
1224 /* sanity-check reply */
1225 if (!(sc->ciss_id->controller_flags & CONTROLLER_FLAGS_BIG_MAP_SUPPORT)) {
1226 ciss_printf(sc, "adapter does not support BIG_MAP\n");
1227 error = ENXIO;
1228 goto out;
1229 }
1230
1231 #if 0
1232 /* XXX later revisions may not need this */
1233 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH;
1234 #endif
1235
1236 /* XXX only really required for old 5300 adapters? */
1237 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT;
1238
1239 /*
1240 * Earlier controller specs do not contain these config
1241 * entries, so assume that a 0 means its old and assign
1242 * these values to the defaults that were established
1243 * when this driver was developed for them
1244 */
1245 if (sc->ciss_cfg->max_logical_supported == 0)
1246 sc->ciss_cfg->max_logical_supported = CISS_MAX_LOGICAL;
1247 if (sc->ciss_cfg->max_physical_supported == 0)
1248 sc->ciss_cfg->max_physical_supported = CISS_MAX_PHYSICAL;
1249 /* print information */
1250 if (bootverbose) {
1251 ciss_printf(sc, " %d logical drive%s configured\n",
1252 sc->ciss_id->configured_logical_drives,
1253 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s");
1254 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision);
1255 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_chip_count);
1256
1257 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature);
1258 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence);
1259 ciss_printf(sc, " supported I/O methods 0x%b\n",
1260 sc->ciss_cfg->supported_methods,
1261 "\2\1READY\2simple\3performant\4MEMQ\n");
1262 ciss_printf(sc, " active I/O method 0x%b\n",
1263 sc->ciss_cfg->active_method, "\2\2simple\3performant\4MEMQ\n");
1264 ciss_printf(sc, " 4G page base 0x%08x\n",
1265 sc->ciss_cfg->command_physlimit);
1266 ciss_printf(sc, " interrupt coalesce delay %dus\n",
1267 sc->ciss_cfg->interrupt_coalesce_delay);
1268 ciss_printf(sc, " interrupt coalesce count %d\n",
1269 sc->ciss_cfg->interrupt_coalesce_count);
1270 ciss_printf(sc, " max outstanding commands %d\n",
1271 sc->ciss_cfg->max_outstanding_commands);
1272 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types,
1273 "\2\1ultra2\2ultra3\10fibre1\11fibre2\n");
1274 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name);
1275 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat);
1276 ciss_printf(sc, " max logical logical volumes: %d\n", sc->ciss_cfg->max_logical_supported);
1277 ciss_printf(sc, " max physical disks supported: %d\n", sc->ciss_cfg->max_physical_supported);
1278 ciss_printf(sc, " max physical disks per logical volume: %d\n", sc->ciss_cfg->max_physical_per_logical);
1279 ciss_printf(sc, " JBOD Support is %s\n", (sc->ciss_id->uiYetMoreControllerFlags & YMORE_CONTROLLER_FLAGS_JBOD_SUPPORTED) ?
1280 "Available" : "Unavailable");
1281 ciss_printf(sc, " JBOD Mode is %s\n", (sc->ciss_id->PowerUPNvramFlags & PWR_UP_FLAG_JBOD_ENABLED) ?
1282 "Enabled" : "Disabled");
1283 }
1284
1285 out:
1286 if (error) {
1287 if (sc->ciss_id != NULL) {
1288 free(sc->ciss_id, CISS_MALLOC_CLASS);
1289 sc->ciss_id = NULL;
1290 }
1291 }
1292 if (cr != NULL)
1293 ciss_release_request(cr);
1294 return(error);
1295 }
1296
1297 /************************************************************************
1298 * Helper routine for generating a list of logical and physical luns.
1299 */
1300 static struct ciss_lun_report *
1301 ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits)
1302 {
1303 struct ciss_request *cr;
1304 struct ciss_command *cc;
1305 struct ciss_report_cdb *crc;
1306 struct ciss_lun_report *cll;
1307 int command_status;
1308 int report_size;
1309 int error = 0;
1310
1311 debug_called(1);
1312
1313 cr = NULL;
1314 cll = NULL;
1315
1316 /*
1317 * Get a request, allocate storage for the address list.
1318 */
1319 if ((error = ciss_get_request(sc, &cr)) != 0)
1320 goto out;
1321 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address);
1322 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
1323 ciss_printf(sc, "can't allocate memory for lun report\n");
1324 error = ENOMEM;
1325 goto out;
1326 }
1327
1328 /*
1329 * Build the Report Logical/Physical LUNs command.
1330 */
1331 cc = cr->cr_cc;
1332 cr->cr_data = cll;
1333 cr->cr_length = report_size;
1334 cr->cr_flags = CISS_REQ_DATAIN;
1335
1336 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
1337 cc->header.address.physical.bus = 0;
1338 cc->header.address.physical.target = 0;
1339 cc->cdb.cdb_length = sizeof(*crc);
1340 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1341 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1342 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1343 cc->cdb.timeout = 30; /* XXX better suggestions? */
1344
1345 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]);
1346 bzero(crc, sizeof(*crc));
1347 crc->opcode = opcode;
1348 crc->length = htonl(report_size); /* big-endian field */
1349 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */
1350
1351 /*
1352 * Submit the request and wait for it to complete. (timeout
1353 * here should be much greater than above)
1354 */
1355 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1356 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error);
1357 goto out;
1358 }
1359
1360 /*
1361 * Check response. Note that data over/underrun is OK.
1362 */
1363 ciss_report_request(cr, &command_status, NULL);
1364 switch(command_status) {
1365 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1366 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */
1367 break;
1368 case CISS_CMD_STATUS_DATA_OVERRUN:
1369 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n",
1370 sc->ciss_cfg->max_logical_supported);
1371 break;
1372 default:
1373 ciss_printf(sc, "error detecting logical drive configuration (%s)\n",
1374 ciss_name_command_status(command_status));
1375 error = EIO;
1376 goto out;
1377 }
1378 ciss_release_request(cr);
1379 cr = NULL;
1380
1381 out:
1382 if (cr != NULL)
1383 ciss_release_request(cr);
1384 if (error && cll != NULL) {
1385 free(cll, CISS_MALLOC_CLASS);
1386 cll = NULL;
1387 }
1388 return(cll);
1389 }
1390
1391 /************************************************************************
1392 * Find logical drives on the adapter.
1393 */
1394 static int
1395 ciss_init_logical(struct ciss_softc *sc)
1396 {
1397 struct ciss_lun_report *cll;
1398 int error = 0, i, j;
1399 int ndrives;
1400
1401 debug_called(1);
1402
1403 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
1404 sc->ciss_cfg->max_logical_supported);
1405 if (cll == NULL) {
1406 error = ENXIO;
1407 goto out;
1408 }
1409
1410 /* sanity-check reply */
1411 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1412 if ((ndrives < 0) || (ndrives > sc->ciss_cfg->max_logical_supported)) {
1413 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n",
1414 ndrives, sc->ciss_cfg->max_logical_supported);
1415 error = ENXIO;
1416 goto out;
1417 }
1418
1419 /*
1420 * Save logical drive information.
1421 */
1422 if (bootverbose) {
1423 ciss_printf(sc, "%d logical drive%s\n",
1424 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : "");
1425 }
1426
1427 sc->ciss_logical =
1428 malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *),
1429 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1430 if (sc->ciss_logical == NULL) {
1431 error = ENXIO;
1432 goto out;
1433 }
1434
1435 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1436 sc->ciss_logical[i] =
1437 malloc(sc->ciss_cfg->max_logical_supported *
1438 sizeof(struct ciss_ldrive),
1439 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1440 if (sc->ciss_logical[i] == NULL) {
1441 error = ENXIO;
1442 goto out;
1443 }
1444
1445 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++)
1446 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT;
1447 }
1448
1449
1450 for (i = 0; i < sc->ciss_cfg->max_logical_supported; i++) {
1451 if (i < ndrives) {
1452 struct ciss_ldrive *ld;
1453 int bus, target;
1454
1455 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
1456 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
1457 ld = &sc->ciss_logical[bus][target];
1458
1459 ld->cl_address = cll->lun[i];
1460 ld->cl_controller = &sc->ciss_controllers[bus];
1461 if (ciss_identify_logical(sc, ld) != 0)
1462 continue;
1463 /*
1464 * If the drive has had media exchanged, we should bring it online.
1465 */
1466 if (ld->cl_lstatus->media_exchanged)
1467 ciss_accept_media(sc, ld);
1468
1469 }
1470 }
1471
1472 out:
1473 if (cll != NULL)
1474 free(cll, CISS_MALLOC_CLASS);
1475 return(error);
1476 }
1477
1478 static int
1479 ciss_init_physical(struct ciss_softc *sc)
1480 {
1481 struct ciss_lun_report *cll;
1482 int error = 0, i;
1483 int nphys;
1484 int bus, target;
1485
1486 debug_called(1);
1487
1488 bus = 0;
1489 target = 0;
1490
1491 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
1492 sc->ciss_cfg->max_physical_supported);
1493 if (cll == NULL) {
1494 error = ENXIO;
1495 goto out;
1496 }
1497
1498 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1499
1500 if (bootverbose) {
1501 ciss_printf(sc, "%d physical device%s\n",
1502 nphys, (nphys > 1 || nphys == 0) ? "s" : "");
1503 }
1504
1505 /*
1506 * Figure out the bus mapping.
1507 * Logical buses include both the local logical bus for local arrays and
1508 * proxy buses for remote arrays. Physical buses are numbered by the
1509 * controller and represent physical buses that hold physical devices.
1510 * We shift these bus numbers so that everything fits into a single flat
1511 * numbering space for CAM. Logical buses occupy the first 32 CAM bus
1512 * numbers, and the physical bus numbers are shifted to be above that.
1513 * This results in the various driver arrays being indexed as follows:
1514 *
1515 * ciss_controllers[] - indexed by logical bus
1516 * ciss_cam_sim[] - indexed by both logical and physical, with physical
1517 * being shifted by 32.
1518 * ciss_logical[][] - indexed by logical bus
1519 * ciss_physical[][] - indexed by physical bus
1520 *
1521 * XXX This is getting more and more hackish. CISS really doesn't play
1522 * well with a standard SCSI model; devices are addressed via magic
1523 * cookies, not via b/t/l addresses. Since there is no way to store
1524 * the cookie in the CAM device object, we have to keep these lookup
1525 * tables handy so that the devices can be found quickly at the cost
1526 * of wasting memory and having a convoluted lookup scheme. This
1527 * driver should probably be converted to block interface.
1528 */
1529 /*
1530 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy
1531 * controller. A proxy controller is another physical controller
1532 * behind the primary PCI controller. We need to know about this
1533 * so that BMIC commands can be properly targeted. There can be
1534 * proxy controllers attached to a single PCI controller, so
1535 * find the highest numbered one so the array can be properly
1536 * sized.
1537 */
1538 sc->ciss_max_logical_bus = 1;
1539 for (i = 0; i < nphys; i++) {
1540 if (cll->lun[i].physical.extra_address == 0) {
1541 bus = cll->lun[i].physical.bus;
1542 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1;
1543 } else {
1544 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address);
1545 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus);
1546 }
1547 }
1548
1549 sc->ciss_controllers =
1550 malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address),
1551 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1552
1553 if (sc->ciss_controllers == NULL) {
1554 ciss_printf(sc, "Could not allocate memory for controller map\n");
1555 error = ENOMEM;
1556 goto out;
1557 }
1558
1559 /* setup a map of controller addresses */
1560 for (i = 0; i < nphys; i++) {
1561 if (cll->lun[i].physical.extra_address == 0) {
1562 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i];
1563 }
1564 }
1565
1566 sc->ciss_physical =
1567 malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *),
1568 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1569 if (sc->ciss_physical == NULL) {
1570 ciss_printf(sc, "Could not allocate memory for physical device map\n");
1571 error = ENOMEM;
1572 goto out;
1573 }
1574
1575 for (i = 0; i < sc->ciss_max_physical_bus; i++) {
1576 sc->ciss_physical[i] =
1577 malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT,
1578 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1579 if (sc->ciss_physical[i] == NULL) {
1580 ciss_printf(sc, "Could not allocate memory for target map\n");
1581 error = ENOMEM;
1582 goto out;
1583 }
1584 }
1585
1586 ciss_filter_physical(sc, cll);
1587
1588 out:
1589 if (cll != NULL)
1590 free(cll, CISS_MALLOC_CLASS);
1591
1592 return(error);
1593 }
1594
1595 static int
1596 ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll)
1597 {
1598 u_int32_t ea;
1599 int i, nphys;
1600 int bus, target;
1601
1602 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1603 for (i = 0; i < nphys; i++) {
1604 if (cll->lun[i].physical.extra_address == 0)
1605 continue;
1606
1607 /*
1608 * Filter out devices that we don't want. Level 3 LUNs could
1609 * probably be supported, but the docs don't give enough of a
1610 * hint to know how.
1611 *
1612 * The mode field of the physical address is likely set to have
1613 * hard disks masked out. Honor it unless the user has overridden
1614 * us with the tunable. We also munge the inquiry data for these
1615 * disks so that they only show up as passthrough devices. Keeping
1616 * them visible in this fashion is useful for doing things like
1617 * flashing firmware.
1618 */
1619 ea = cll->lun[i].physical.extra_address;
1620 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) ||
1621 (CISS_EXTRA_MODE2(ea) == 0x3))
1622 continue;
1623 if ((ciss_expose_hidden_physical == 0) &&
1624 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL))
1625 continue;
1626
1627 /*
1628 * Note: CISS firmware numbers physical busses starting at '1', not
1629 * ''. This numbering is internal to the firmware and is only
1630 * used as a hint here.
1631 */
1632 bus = CISS_EXTRA_BUS2(ea) - 1;
1633 target = CISS_EXTRA_TARGET2(ea);
1634 sc->ciss_physical[bus][target].cp_address = cll->lun[i];
1635 sc->ciss_physical[bus][target].cp_online = 1;
1636 }
1637
1638 return (0);
1639 }
1640
1641 static int
1642 ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1643 {
1644 struct ciss_request *cr;
1645 struct ciss_command *cc;
1646 struct scsi_inquiry *inq;
1647 int error;
1648 int command_status;
1649
1650 cr = NULL;
1651
1652 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry));
1653
1654 if ((error = ciss_get_request(sc, &cr)) != 0)
1655 goto out;
1656
1657 cc = cr->cr_cc;
1658 cr->cr_data = &ld->cl_geometry;
1659 cr->cr_length = sizeof(ld->cl_geometry);
1660 cr->cr_flags = CISS_REQ_DATAIN;
1661
1662 cc->header.address = ld->cl_address;
1663 cc->cdb.cdb_length = 6;
1664 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1665 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1666 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1667 cc->cdb.timeout = 30;
1668
1669 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]);
1670 inq->opcode = INQUIRY;
1671 inq->byte2 = SI_EVPD;
1672 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY;
1673 scsi_ulto2b(sizeof(ld->cl_geometry), inq->length);
1674
1675 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1676 ciss_printf(sc, "error getting geometry (%d)\n", error);
1677 goto out;
1678 }
1679
1680 ciss_report_request(cr, &command_status, NULL);
1681 switch(command_status) {
1682 case CISS_CMD_STATUS_SUCCESS:
1683 case CISS_CMD_STATUS_DATA_UNDERRUN:
1684 break;
1685 case CISS_CMD_STATUS_DATA_OVERRUN:
1686 ciss_printf(sc, "WARNING: Data overrun\n");
1687 break;
1688 default:
1689 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n",
1690 ciss_name_command_status(command_status));
1691 break;
1692 }
1693
1694 out:
1695 if (cr != NULL)
1696 ciss_release_request(cr);
1697 return(error);
1698 }
1699 /************************************************************************
1700 * Identify a logical drive, initialise state related to it.
1701 */
1702 static int
1703 ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1704 {
1705 struct ciss_request *cr;
1706 struct ciss_command *cc;
1707 struct ciss_bmic_cdb *cbc;
1708 int error, command_status;
1709
1710 debug_called(1);
1711
1712 cr = NULL;
1713
1714 /*
1715 * Build a BMIC request to fetch the drive ID.
1716 */
1717 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE,
1718 (void **)&ld->cl_ldrive,
1719 sizeof(*ld->cl_ldrive))) != 0)
1720 goto out;
1721 cc = cr->cr_cc;
1722 cc->header.address = *ld->cl_controller; /* target controller */
1723 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1724 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1725
1726 /*
1727 * Submit the request and wait for it to complete.
1728 */
1729 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1730 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error);
1731 goto out;
1732 }
1733
1734 /*
1735 * Check response.
1736 */
1737 ciss_report_request(cr, &command_status, NULL);
1738 switch(command_status) {
1739 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1740 break;
1741 case CISS_CMD_STATUS_DATA_UNDERRUN:
1742 case CISS_CMD_STATUS_DATA_OVERRUN:
1743 ciss_printf(sc, "data over/underrun reading logical drive ID\n");
1744 default:
1745 ciss_printf(sc, "error reading logical drive ID (%s)\n",
1746 ciss_name_command_status(command_status));
1747 error = EIO;
1748 goto out;
1749 }
1750 ciss_release_request(cr);
1751 cr = NULL;
1752
1753 /*
1754 * Build a CISS BMIC command to get the logical drive status.
1755 */
1756 if ((error = ciss_get_ldrive_status(sc, ld)) != 0)
1757 goto out;
1758
1759 /*
1760 * Get the logical drive geometry.
1761 */
1762 if ((error = ciss_inquiry_logical(sc, ld)) != 0)
1763 goto out;
1764
1765 /*
1766 * Print the drive's basic characteristics.
1767 */
1768 if (bootverbose) {
1769 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ",
1770 CISS_LUN_TO_BUS(ld->cl_address.logical.lun),
1771 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun),
1772 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance),
1773 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) *
1774 ld->cl_ldrive->block_size));
1775
1776 ciss_print_ldrive(sc, ld);
1777 }
1778 out:
1779 if (error != 0) {
1780 /* make the drive not-exist */
1781 ld->cl_status = CISS_LD_NONEXISTENT;
1782 if (ld->cl_ldrive != NULL) {
1783 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
1784 ld->cl_ldrive = NULL;
1785 }
1786 if (ld->cl_lstatus != NULL) {
1787 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
1788 ld->cl_lstatus = NULL;
1789 }
1790 }
1791 if (cr != NULL)
1792 ciss_release_request(cr);
1793
1794 return(error);
1795 }
1796
1797 /************************************************************************
1798 * Get status for a logical drive.
1799 *
1800 * XXX should we also do this in response to Test Unit Ready?
1801 */
1802 static int
1803 ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld)
1804 {
1805 struct ciss_request *cr;
1806 struct ciss_command *cc;
1807 struct ciss_bmic_cdb *cbc;
1808 int error, command_status;
1809
1810 /*
1811 * Build a CISS BMIC command to get the logical drive status.
1812 */
1813 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS,
1814 (void **)&ld->cl_lstatus,
1815 sizeof(*ld->cl_lstatus))) != 0)
1816 goto out;
1817 cc = cr->cr_cc;
1818 cc->header.address = *ld->cl_controller; /* target controller */
1819 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1820 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1821
1822 /*
1823 * Submit the request and wait for it to complete.
1824 */
1825 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1826 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error);
1827 goto out;
1828 }
1829
1830 /*
1831 * Check response.
1832 */
1833 ciss_report_request(cr, &command_status, NULL);
1834 switch(command_status) {
1835 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1836 break;
1837 case CISS_CMD_STATUS_DATA_UNDERRUN:
1838 case CISS_CMD_STATUS_DATA_OVERRUN:
1839 ciss_printf(sc, "data over/underrun reading logical drive status\n");
1840 default:
1841 ciss_printf(sc, "error reading logical drive status (%s)\n",
1842 ciss_name_command_status(command_status));
1843 error = EIO;
1844 goto out;
1845 }
1846
1847 /*
1848 * Set the drive's summary status based on the returned status.
1849 *
1850 * XXX testing shows that a failed JBOD drive comes back at next
1851 * boot in "queued for expansion" mode. WTF?
1852 */
1853 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status);
1854
1855 out:
1856 if (cr != NULL)
1857 ciss_release_request(cr);
1858 return(error);
1859 }
1860
1861 /************************************************************************
1862 * Notify the adapter of a config update.
1863 */
1864 static int
1865 ciss_update_config(struct ciss_softc *sc)
1866 {
1867 int i;
1868
1869 debug_called(1);
1870
1871 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE);
1872 for (i = 0; i < 1000; i++) {
1873 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) &
1874 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) {
1875 return(0);
1876 }
1877 DELAY(1000);
1878 }
1879 return(1);
1880 }
1881
1882 /************************************************************************
1883 * Accept new media into a logical drive.
1884 *
1885 * XXX The drive has previously been offline; it would be good if we
1886 * could make sure it's not open right now.
1887 */
1888 static int
1889 ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld)
1890 {
1891 struct ciss_request *cr;
1892 struct ciss_command *cc;
1893 struct ciss_bmic_cdb *cbc;
1894 int command_status;
1895 int error = 0, ldrive;
1896
1897 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1898
1899 debug(0, "bringing logical drive %d back online", ldrive);
1900
1901 /*
1902 * Build a CISS BMIC command to bring the drive back online.
1903 */
1904 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA,
1905 NULL, 0)) != 0)
1906 goto out;
1907 cc = cr->cr_cc;
1908 cc->header.address = *ld->cl_controller; /* target controller */
1909 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1910 cbc->log_drive = ldrive;
1911
1912 /*
1913 * Submit the request and wait for it to complete.
1914 */
1915 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1916 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error);
1917 goto out;
1918 }
1919
1920 /*
1921 * Check response.
1922 */
1923 ciss_report_request(cr, &command_status, NULL);
1924 switch(command_status) {
1925 case CISS_CMD_STATUS_SUCCESS: /* all OK */
1926 /* we should get a logical drive status changed event here */
1927 break;
1928 default:
1929 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n",
1930 ciss_name_command_status(command_status));
1931 break;
1932 }
1933
1934 out:
1935 if (cr != NULL)
1936 ciss_release_request(cr);
1937 return(error);
1938 }
1939
1940 /************************************************************************
1941 * Release adapter resources.
1942 */
1943 static void
1944 ciss_free(struct ciss_softc *sc)
1945 {
1946 struct ciss_request *cr;
1947 int i, j;
1948
1949 debug_called(1);
1950
1951 /* we're going away */
1952 sc->ciss_flags |= CISS_FLAG_ABORTING;
1953
1954 /* terminate the periodic heartbeat routine */
1955 callout_stop(&sc->ciss_periodic);
1956
1957 /* cancel the Event Notify chain */
1958 ciss_notify_abort(sc);
1959
1960 ciss_kill_notify_thread(sc);
1961
1962 /* disconnect from CAM */
1963 if (sc->ciss_cam_sim) {
1964 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1965 if (sc->ciss_cam_sim[i]) {
1966 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1967 cam_sim_free(sc->ciss_cam_sim[i], 0);
1968 }
1969 }
1970 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
1971 CISS_PHYSICAL_BASE; i++) {
1972 if (sc->ciss_cam_sim[i]) {
1973 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1974 cam_sim_free(sc->ciss_cam_sim[i], 0);
1975 }
1976 }
1977 free(sc->ciss_cam_sim, CISS_MALLOC_CLASS);
1978 }
1979 if (sc->ciss_cam_devq)
1980 cam_simq_free(sc->ciss_cam_devq);
1981
1982 /* remove the control device */
1983 mtx_unlock(&sc->ciss_mtx);
1984 if (sc->ciss_dev_t != NULL)
1985 destroy_dev(sc->ciss_dev_t);
1986
1987 /* Final cleanup of the callout. */
1988 callout_drain(&sc->ciss_periodic);
1989 mtx_destroy(&sc->ciss_mtx);
1990
1991 /* free the controller data */
1992 if (sc->ciss_id != NULL)
1993 free(sc->ciss_id, CISS_MALLOC_CLASS);
1994
1995 /* release I/O resources */
1996 if (sc->ciss_regs_resource != NULL)
1997 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1998 sc->ciss_regs_rid, sc->ciss_regs_resource);
1999 if (sc->ciss_cfg_resource != NULL)
2000 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
2001 sc->ciss_cfg_rid, sc->ciss_cfg_resource);
2002 if (sc->ciss_intr != NULL)
2003 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr);
2004 if (sc->ciss_irq_resource != NULL)
2005 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ,
2006 sc->ciss_irq_rid[0], sc->ciss_irq_resource);
2007 if (sc->ciss_msi)
2008 pci_release_msi(sc->ciss_dev);
2009
2010 while ((cr = ciss_dequeue_free(sc)) != NULL)
2011 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap);
2012 if (sc->ciss_buffer_dmat)
2013 bus_dma_tag_destroy(sc->ciss_buffer_dmat);
2014
2015 /* destroy command memory and DMA tag */
2016 if (sc->ciss_command != NULL) {
2017 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map);
2018 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map);
2019 }
2020 if (sc->ciss_command_dmat)
2021 bus_dma_tag_destroy(sc->ciss_command_dmat);
2022
2023 if (sc->ciss_reply) {
2024 bus_dmamap_unload(sc->ciss_reply_dmat, sc->ciss_reply_map);
2025 bus_dmamem_free(sc->ciss_reply_dmat, sc->ciss_reply, sc->ciss_reply_map);
2026 }
2027 if (sc->ciss_reply_dmat)
2028 bus_dma_tag_destroy(sc->ciss_reply_dmat);
2029
2030 /* destroy DMA tags */
2031 if (sc->ciss_parent_dmat)
2032 bus_dma_tag_destroy(sc->ciss_parent_dmat);
2033 if (sc->ciss_logical) {
2034 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2035 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
2036 if (sc->ciss_logical[i][j].cl_ldrive)
2037 free(sc->ciss_logical[i][j].cl_ldrive, CISS_MALLOC_CLASS);
2038 if (sc->ciss_logical[i][j].cl_lstatus)
2039 free(sc->ciss_logical[i][j].cl_lstatus, CISS_MALLOC_CLASS);
2040 }
2041 free(sc->ciss_logical[i], CISS_MALLOC_CLASS);
2042 }
2043 free(sc->ciss_logical, CISS_MALLOC_CLASS);
2044 }
2045
2046 if (sc->ciss_physical) {
2047 for (i = 0; i < sc->ciss_max_physical_bus; i++)
2048 free(sc->ciss_physical[i], CISS_MALLOC_CLASS);
2049 free(sc->ciss_physical, CISS_MALLOC_CLASS);
2050 }
2051
2052 if (sc->ciss_controllers)
2053 free(sc->ciss_controllers, CISS_MALLOC_CLASS);
2054
2055 }
2056
2057 /************************************************************************
2058 * Give a command to the adapter.
2059 *
2060 * Note that this uses the simple transport layer directly. If we
2061 * want to add support for other layers, we'll need a switch of some
2062 * sort.
2063 *
2064 * Note that the simple transport layer has no way of refusing a
2065 * command; we only have as many request structures as the adapter
2066 * supports commands, so we don't have to check (this presumes that
2067 * the adapter can handle commands as fast as we throw them at it).
2068 */
2069 static int
2070 ciss_start(struct ciss_request *cr)
2071 {
2072 struct ciss_command *cc; /* XXX debugging only */
2073 int error;
2074
2075 cc = cr->cr_cc;
2076 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag);
2077
2078 /*
2079 * Map the request's data.
2080 */
2081 if ((error = ciss_map_request(cr)))
2082 return(error);
2083
2084 #if 0
2085 ciss_print_request(cr);
2086 #endif
2087
2088 return(0);
2089 }
2090
2091 /************************************************************************
2092 * Fetch completed request(s) from the adapter, queue them for
2093 * completion handling.
2094 *
2095 * Note that this uses the simple transport layer directly. If we
2096 * want to add support for other layers, we'll need a switch of some
2097 * sort.
2098 *
2099 * Note that the simple transport mechanism does not require any
2100 * reentrancy protection; the OPQ read is atomic. If there is a
2101 * chance of a race with something else that might move the request
2102 * off the busy list, then we will have to lock against that
2103 * (eg. timeouts, etc.)
2104 */
2105 static void
2106 ciss_done(struct ciss_softc *sc, cr_qhead_t *qh)
2107 {
2108 struct ciss_request *cr;
2109 struct ciss_command *cc;
2110 u_int32_t tag, index;
2111
2112 debug_called(3);
2113
2114 /*
2115 * Loop quickly taking requests from the adapter and moving them
2116 * to the completed queue.
2117 */
2118 for (;;) {
2119
2120 tag = CISS_TL_SIMPLE_FETCH_CMD(sc);
2121 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY)
2122 break;
2123 index = tag >> 2;
2124 debug(2, "completed command %d%s", index,
2125 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2126 if (index >= sc->ciss_max_requests) {
2127 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2128 continue;
2129 }
2130 cr = &(sc->ciss_request[index]);
2131 cc = cr->cr_cc;
2132 cc->header.host_tag = tag; /* not updated by adapter */
2133 ciss_enqueue_complete(cr, qh);
2134 }
2135
2136 }
2137
2138 static void
2139 ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh)
2140 {
2141 struct ciss_request *cr;
2142 struct ciss_command *cc;
2143 u_int32_t tag, index;
2144
2145 debug_called(3);
2146
2147 /*
2148 * Loop quickly taking requests from the adapter and moving them
2149 * to the completed queue.
2150 */
2151 for (;;) {
2152 tag = sc->ciss_reply[sc->ciss_rqidx];
2153 if ((tag & CISS_CYCLE_MASK) != sc->ciss_cycle)
2154 break;
2155 index = tag >> 2;
2156 debug(2, "completed command %d%s\n", index,
2157 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2158 if (index < sc->ciss_max_requests) {
2159 cr = &(sc->ciss_request[index]);
2160 cc = cr->cr_cc;
2161 cc->header.host_tag = tag; /* not updated by adapter */
2162 ciss_enqueue_complete(cr, qh);
2163 } else {
2164 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2165 }
2166 if (++sc->ciss_rqidx == sc->ciss_max_requests) {
2167 sc->ciss_rqidx = 0;
2168 sc->ciss_cycle ^= 1;
2169 }
2170 }
2171
2172 }
2173
2174 /************************************************************************
2175 * Take an interrupt from the adapter.
2176 */
2177 static void
2178 ciss_intr(void *arg)
2179 {
2180 cr_qhead_t qh;
2181 struct ciss_softc *sc = (struct ciss_softc *)arg;
2182
2183 /*
2184 * The only interrupt we recognise indicates that there are
2185 * entries in the outbound post queue.
2186 */
2187 STAILQ_INIT(&qh);
2188 ciss_done(sc, &qh);
2189 mtx_lock(&sc->ciss_mtx);
2190 ciss_complete(sc, &qh);
2191 mtx_unlock(&sc->ciss_mtx);
2192 }
2193
2194 static void
2195 ciss_perf_intr(void *arg)
2196 {
2197 struct ciss_softc *sc = (struct ciss_softc *)arg;
2198
2199 /* Clear the interrupt and flush the bridges. Docs say that the flush
2200 * needs to be done twice, which doesn't seem right.
2201 */
2202 CISS_TL_PERF_CLEAR_INT(sc);
2203 CISS_TL_PERF_FLUSH_INT(sc);
2204
2205 ciss_perf_msi_intr(sc);
2206 }
2207
2208 static void
2209 ciss_perf_msi_intr(void *arg)
2210 {
2211 cr_qhead_t qh;
2212 struct ciss_softc *sc = (struct ciss_softc *)arg;
2213
2214 STAILQ_INIT(&qh);
2215 ciss_perf_done(sc, &qh);
2216 mtx_lock(&sc->ciss_mtx);
2217 ciss_complete(sc, &qh);
2218 mtx_unlock(&sc->ciss_mtx);
2219 }
2220
2221
2222 /************************************************************************
2223 * Process completed requests.
2224 *
2225 * Requests can be completed in three fashions:
2226 *
2227 * - by invoking a callback function (cr_complete is non-null)
2228 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set)
2229 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context
2230 */
2231 static void
2232 ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh)
2233 {
2234 struct ciss_request *cr;
2235
2236 debug_called(2);
2237
2238 /*
2239 * Loop taking requests off the completed queue and performing
2240 * completion processing on them.
2241 */
2242 for (;;) {
2243 if ((cr = ciss_dequeue_complete(sc, qh)) == NULL)
2244 break;
2245 ciss_unmap_request(cr);
2246
2247 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
2248 ciss_printf(sc, "WARNING: completing non-busy request\n");
2249 cr->cr_flags &= ~CISS_REQ_BUSY;
2250
2251 /*
2252 * If the request has a callback, invoke it.
2253 */
2254 if (cr->cr_complete != NULL) {
2255 cr->cr_complete(cr);
2256 continue;
2257 }
2258
2259 /*
2260 * If someone is sleeping on this request, wake them up.
2261 */
2262 if (cr->cr_flags & CISS_REQ_SLEEP) {
2263 cr->cr_flags &= ~CISS_REQ_SLEEP;
2264 wakeup(cr);
2265 continue;
2266 }
2267
2268 /*
2269 * If someone is polling this request for completion, signal.
2270 */
2271 if (cr->cr_flags & CISS_REQ_POLL) {
2272 cr->cr_flags &= ~CISS_REQ_POLL;
2273 continue;
2274 }
2275
2276 /*
2277 * Give up and throw the request back on the free queue. This
2278 * should never happen; resources will probably be lost.
2279 */
2280 ciss_printf(sc, "WARNING: completed command with no submitter\n");
2281 ciss_enqueue_free(cr);
2282 }
2283 }
2284
2285 /************************************************************************
2286 * Report on the completion status of a request, and pass back SCSI
2287 * and command status values.
2288 */
2289 static int
2290 _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func)
2291 {
2292 struct ciss_command *cc;
2293 struct ciss_error_info *ce;
2294
2295 debug_called(2);
2296
2297 cc = cr->cr_cc;
2298 ce = (struct ciss_error_info *)&(cc->sg[0]);
2299
2300 /*
2301 * We don't consider data under/overrun an error for the Report
2302 * Logical/Physical LUNs commands.
2303 */
2304 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) &&
2305 ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) ||
2306 (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) &&
2307 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) ||
2308 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) ||
2309 (cc->cdb.cdb[0] == INQUIRY))) {
2310 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR;
2311 debug(2, "ignoring irrelevant under/overrun error");
2312 }
2313
2314 /*
2315 * Check the command's error bit, if clear, there's no status and
2316 * everything is OK.
2317 */
2318 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) {
2319 if (scsi_status != NULL)
2320 *scsi_status = SCSI_STATUS_OK;
2321 if (command_status != NULL)
2322 *command_status = CISS_CMD_STATUS_SUCCESS;
2323 return(0);
2324 } else {
2325 if (command_status != NULL)
2326 *command_status = ce->command_status;
2327 if (scsi_status != NULL) {
2328 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) {
2329 *scsi_status = ce->scsi_status;
2330 } else {
2331 *scsi_status = -1;
2332 }
2333 }
2334 if (bootverbose)
2335 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n",
2336 ce->command_status, ciss_name_command_status(ce->command_status),
2337 ce->scsi_status);
2338 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) {
2339 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x, function %s\n",
2340 ce->additional_error_info.invalid_command.offense_size,
2341 ce->additional_error_info.invalid_command.offense_offset,
2342 ce->additional_error_info.invalid_command.offense_value,
2343 func);
2344 }
2345 }
2346 #if 0
2347 ciss_print_request(cr);
2348 #endif
2349 return(1);
2350 }
2351
2352 /************************************************************************
2353 * Issue a request and don't return until it's completed.
2354 *
2355 * Depending on adapter status, we may poll or sleep waiting for
2356 * completion.
2357 */
2358 static int
2359 ciss_synch_request(struct ciss_request *cr, int timeout)
2360 {
2361 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) {
2362 return(ciss_wait_request(cr, timeout));
2363 } else {
2364 return(ciss_poll_request(cr, timeout));
2365 }
2366 }
2367
2368 /************************************************************************
2369 * Issue a request and poll for completion.
2370 *
2371 * Timeout in milliseconds.
2372 */
2373 static int
2374 ciss_poll_request(struct ciss_request *cr, int timeout)
2375 {
2376 cr_qhead_t qh;
2377 struct ciss_softc *sc;
2378 int error;
2379
2380 debug_called(2);
2381
2382 STAILQ_INIT(&qh);
2383 sc = cr->cr_sc;
2384 cr->cr_flags |= CISS_REQ_POLL;
2385 if ((error = ciss_start(cr)) != 0)
2386 return(error);
2387
2388 do {
2389 if (sc->ciss_perf)
2390 ciss_perf_done(sc, &qh);
2391 else
2392 ciss_done(sc, &qh);
2393 ciss_complete(sc, &qh);
2394 if (!(cr->cr_flags & CISS_REQ_POLL))
2395 return(0);
2396 DELAY(1000);
2397 } while (timeout-- >= 0);
2398 return(EWOULDBLOCK);
2399 }
2400
2401 /************************************************************************
2402 * Issue a request and sleep waiting for completion.
2403 *
2404 * Timeout in milliseconds. Note that a spurious wakeup will reset
2405 * the timeout.
2406 */
2407 static int
2408 ciss_wait_request(struct ciss_request *cr, int timeout)
2409 {
2410 int error;
2411
2412 debug_called(2);
2413
2414 cr->cr_flags |= CISS_REQ_SLEEP;
2415 if ((error = ciss_start(cr)) != 0)
2416 return(error);
2417
2418 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) {
2419 error = msleep_sbt(cr, &cr->cr_sc->ciss_mtx, PRIBIO, "cissREQ",
2420 SBT_1MS * timeout, 0, 0);
2421 }
2422 return(error);
2423 }
2424
2425 #if 0
2426 /************************************************************************
2427 * Abort a request. Note that a potential exists here to race the
2428 * request being completed; the caller must deal with this.
2429 */
2430 static int
2431 ciss_abort_request(struct ciss_request *ar)
2432 {
2433 struct ciss_request *cr;
2434 struct ciss_command *cc;
2435 struct ciss_message_cdb *cmc;
2436 int error;
2437
2438 debug_called(1);
2439
2440 /* get a request */
2441 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0)
2442 return(error);
2443
2444 /* build the abort command */
2445 cc = cr->cr_cc;
2446 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */
2447 cc->header.address.physical.target = 0;
2448 cc->header.address.physical.bus = 0;
2449 cc->cdb.cdb_length = sizeof(*cmc);
2450 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
2451 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2452 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
2453 cc->cdb.timeout = 30;
2454
2455 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]);
2456 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT;
2457 cmc->type = CISS_MESSAGE_ABORT_TASK;
2458 cmc->abort_tag = ar->cr_tag; /* endianness?? */
2459
2460 /*
2461 * Send the request and wait for a response. If we believe we
2462 * aborted the request OK, clear the flag that indicates it's
2463 * running.
2464 */
2465 error = ciss_synch_request(cr, 35 * 1000);
2466 if (!error)
2467 error = ciss_report_request(cr, NULL, NULL);
2468 ciss_release_request(cr);
2469
2470 return(error);
2471 }
2472 #endif
2473
2474
2475 /************************************************************************
2476 * Fetch and initialise a request
2477 */
2478 static int
2479 ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp)
2480 {
2481 struct ciss_request *cr;
2482
2483 debug_called(2);
2484
2485 /*
2486 * Get a request and clean it up.
2487 */
2488 if ((cr = ciss_dequeue_free(sc)) == NULL)
2489 return(ENOMEM);
2490
2491 cr->cr_data = NULL;
2492 cr->cr_flags = 0;
2493 cr->cr_complete = NULL;
2494 cr->cr_private = NULL;
2495 cr->cr_sg_tag = CISS_SG_MAX; /* Backstop to prevent accidents */
2496
2497 ciss_preen_command(cr);
2498 *crp = cr;
2499 return(0);
2500 }
2501
2502 static void
2503 ciss_preen_command(struct ciss_request *cr)
2504 {
2505 struct ciss_command *cc;
2506 u_int32_t cmdphys;
2507
2508 /*
2509 * Clean up the command structure.
2510 *
2511 * Note that we set up the error_info structure here, since the
2512 * length can be overwritten by any command.
2513 */
2514 cc = cr->cr_cc;
2515 cc->header.sg_in_list = 0; /* kinda inefficient this way */
2516 cc->header.sg_total = 0;
2517 cc->header.host_tag = cr->cr_tag << 2;
2518 cc->header.host_tag_zeroes = 0;
2519 bzero(&(cc->sg[0]), CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command));
2520 cmdphys = cr->cr_ccphys;
2521 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command);
2522 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command);
2523 }
2524
2525 /************************************************************************
2526 * Release a request to the free list.
2527 */
2528 static void
2529 ciss_release_request(struct ciss_request *cr)
2530 {
2531 struct ciss_softc *sc;
2532
2533 debug_called(2);
2534
2535 sc = cr->cr_sc;
2536
2537 /* release the request to the free queue */
2538 ciss_requeue_free(cr);
2539 }
2540
2541 /************************************************************************
2542 * Allocate a request that will be used to send a BMIC command. Do some
2543 * of the common setup here to avoid duplicating it everywhere else.
2544 */
2545 static int
2546 ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
2547 int opcode, void **bufp, size_t bufsize)
2548 {
2549 struct ciss_request *cr;
2550 struct ciss_command *cc;
2551 struct ciss_bmic_cdb *cbc;
2552 void *buf;
2553 int error;
2554 int dataout;
2555
2556 debug_called(2);
2557
2558 cr = NULL;
2559 buf = NULL;
2560
2561 /*
2562 * Get a request.
2563 */
2564 if ((error = ciss_get_request(sc, &cr)) != 0)
2565 goto out;
2566
2567 /*
2568 * Allocate data storage if requested, determine the data direction.
2569 */
2570 dataout = 0;
2571 if ((bufsize > 0) && (bufp != NULL)) {
2572 if (*bufp == NULL) {
2573 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
2574 error = ENOMEM;
2575 goto out;
2576 }
2577 } else {
2578 buf = *bufp;
2579 dataout = 1; /* we are given a buffer, so we are writing */
2580 }
2581 }
2582
2583 /*
2584 * Build a CISS BMIC command to get the logical drive ID.
2585 */
2586 cr->cr_data = buf;
2587 cr->cr_length = bufsize;
2588 if (!dataout)
2589 cr->cr_flags = CISS_REQ_DATAIN;
2590
2591 cc = cr->cr_cc;
2592 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
2593 cc->header.address.physical.bus = 0;
2594 cc->header.address.physical.target = 0;
2595 cc->cdb.cdb_length = sizeof(*cbc);
2596 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
2597 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2598 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ;
2599 cc->cdb.timeout = 0;
2600
2601 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
2602 bzero(cbc, sizeof(*cbc));
2603 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ;
2604 cbc->bmic_opcode = opcode;
2605 cbc->size = htons((u_int16_t)bufsize);
2606
2607 out:
2608 if (error) {
2609 if (cr != NULL)
2610 ciss_release_request(cr);
2611 } else {
2612 *crp = cr;
2613 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL))
2614 *bufp = buf;
2615 }
2616 return(error);
2617 }
2618
2619 /************************************************************************
2620 * Handle a command passed in from userspace.
2621 */
2622 static int
2623 ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc)
2624 {
2625 struct ciss_request *cr;
2626 struct ciss_command *cc;
2627 struct ciss_error_info *ce;
2628 int error = 0;
2629
2630 debug_called(1);
2631
2632 cr = NULL;
2633
2634 /*
2635 * Get a request.
2636 */
2637 while (ciss_get_request(sc, &cr) != 0)
2638 msleep(sc, &sc->ciss_mtx, PPAUSE, "cissREQ", hz);
2639 cc = cr->cr_cc;
2640
2641 /*
2642 * Allocate an in-kernel databuffer if required, copy in user data.
2643 */
2644 mtx_unlock(&sc->ciss_mtx);
2645 cr->cr_length = ioc->buf_size;
2646 if (ioc->buf_size > 0) {
2647 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
2648 error = ENOMEM;
2649 goto out_unlocked;
2650 }
2651 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) {
2652 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2653 goto out_unlocked;
2654 }
2655 }
2656
2657 /*
2658 * Build the request based on the user command.
2659 */
2660 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address));
2661 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb));
2662
2663 /* XXX anything else to populate here? */
2664 mtx_lock(&sc->ciss_mtx);
2665
2666 /*
2667 * Run the command.
2668 */
2669 if ((error = ciss_synch_request(cr, 60 * 1000))) {
2670 debug(0, "request failed - %d", error);
2671 goto out;
2672 }
2673
2674 /*
2675 * Check to see if the command succeeded.
2676 */
2677 ce = (struct ciss_error_info *)&(cc->sg[0]);
2678 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0)
2679 bzero(ce, sizeof(*ce));
2680
2681 /*
2682 * Copy the results back to the user.
2683 */
2684 bcopy(ce, &ioc->error_info, sizeof(*ce));
2685 mtx_unlock(&sc->ciss_mtx);
2686 if ((ioc->buf_size > 0) &&
2687 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) {
2688 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2689 goto out_unlocked;
2690 }
2691
2692 /* done OK */
2693 error = 0;
2694
2695 out_unlocked:
2696 mtx_lock(&sc->ciss_mtx);
2697
2698 out:
2699 if ((cr != NULL) && (cr->cr_data != NULL))
2700 free(cr->cr_data, CISS_MALLOC_CLASS);
2701 if (cr != NULL)
2702 ciss_release_request(cr);
2703 return(error);
2704 }
2705
2706 /************************************************************************
2707 * Map a request into bus-visible space, initialise the scatter/gather
2708 * list.
2709 */
2710 static int
2711 ciss_map_request(struct ciss_request *cr)
2712 {
2713 struct ciss_softc *sc;
2714 int error = 0;
2715
2716 debug_called(2);
2717
2718 sc = cr->cr_sc;
2719
2720 /* check that mapping is necessary */
2721 if (cr->cr_flags & CISS_REQ_MAPPED)
2722 return(0);
2723
2724 cr->cr_flags |= CISS_REQ_MAPPED;
2725
2726 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2727 BUS_DMASYNC_PREWRITE);
2728
2729 if (cr->cr_data != NULL) {
2730 if (cr->cr_flags & CISS_REQ_CCB)
2731 error = bus_dmamap_load_ccb(sc->ciss_buffer_dmat,
2732 cr->cr_datamap, cr->cr_data,
2733 ciss_request_map_helper, cr, 0);
2734 else
2735 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap,
2736 cr->cr_data, cr->cr_length,
2737 ciss_request_map_helper, cr, 0);
2738 if (error != 0)
2739 return (error);
2740 } else {
2741 /*
2742 * Post the command to the adapter.
2743 */
2744 cr->cr_sg_tag = CISS_SG_NONE;
2745 cr->cr_flags |= CISS_REQ_BUSY;
2746 if (sc->ciss_perf)
2747 CISS_TL_PERF_POST_CMD(sc, cr);
2748 else
2749 CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys);
2750 }
2751
2752 return(0);
2753 }
2754
2755 static void
2756 ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2757 {
2758 struct ciss_command *cc;
2759 struct ciss_request *cr;
2760 struct ciss_softc *sc;
2761 int i;
2762
2763 debug_called(2);
2764
2765 cr = (struct ciss_request *)arg;
2766 sc = cr->cr_sc;
2767 cc = cr->cr_cc;
2768
2769 for (i = 0; i < nseg; i++) {
2770 cc->sg[i].address = segs[i].ds_addr;
2771 cc->sg[i].length = segs[i].ds_len;
2772 cc->sg[i].extension = 0;
2773 }
2774 /* we leave the s/g table entirely within the command */
2775 cc->header.sg_in_list = nseg;
2776 cc->header.sg_total = nseg;
2777
2778 if (cr->cr_flags & CISS_REQ_DATAIN)
2779 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD);
2780 if (cr->cr_flags & CISS_REQ_DATAOUT)
2781 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE);
2782
2783 if (nseg == 0)
2784 cr->cr_sg_tag = CISS_SG_NONE;
2785 else if (nseg == 1)
2786 cr->cr_sg_tag = CISS_SG_1;
2787 else if (nseg == 2)
2788 cr->cr_sg_tag = CISS_SG_2;
2789 else if (nseg <= 4)
2790 cr->cr_sg_tag = CISS_SG_4;
2791 else if (nseg <= 8)
2792 cr->cr_sg_tag = CISS_SG_8;
2793 else if (nseg <= 16)
2794 cr->cr_sg_tag = CISS_SG_16;
2795 else if (nseg <= 32)
2796 cr->cr_sg_tag = CISS_SG_32;
2797 else
2798 cr->cr_sg_tag = CISS_SG_MAX;
2799
2800 /*
2801 * Post the command to the adapter.
2802 */
2803 cr->cr_flags |= CISS_REQ_BUSY;
2804 if (sc->ciss_perf)
2805 CISS_TL_PERF_POST_CMD(sc, cr);
2806 else
2807 CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys);
2808 }
2809
2810 /************************************************************************
2811 * Unmap a request from bus-visible space.
2812 */
2813 static void
2814 ciss_unmap_request(struct ciss_request *cr)
2815 {
2816 struct ciss_softc *sc;
2817
2818 debug_called(2);
2819
2820 sc = cr->cr_sc;
2821
2822 /* check that unmapping is necessary */
2823 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0)
2824 return;
2825
2826 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2827 BUS_DMASYNC_POSTWRITE);
2828
2829 if (cr->cr_data == NULL)
2830 goto out;
2831
2832 if (cr->cr_flags & CISS_REQ_DATAIN)
2833 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD);
2834 if (cr->cr_flags & CISS_REQ_DATAOUT)
2835 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE);
2836
2837 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap);
2838 out:
2839 cr->cr_flags &= ~CISS_REQ_MAPPED;
2840 }
2841
2842 /************************************************************************
2843 * Attach the driver to CAM.
2844 *
2845 * We put all the logical drives on a single SCSI bus.
2846 */
2847 static int
2848 ciss_cam_init(struct ciss_softc *sc)
2849 {
2850 int i, maxbus;
2851
2852 debug_called(1);
2853
2854 /*
2855 * Allocate a devq. We can reuse this for the masked physical
2856 * devices if we decide to export these as well.
2857 */
2858 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests - 2)) == NULL) {
2859 ciss_printf(sc, "can't allocate CAM SIM queue\n");
2860 return(ENOMEM);
2861 }
2862
2863 /*
2864 * Create a SIM.
2865 *
2866 * This naturally wastes a bit of memory. The alternative is to allocate
2867 * and register each bus as it is found, and then track them on a linked
2868 * list. Unfortunately, the driver has a few places where it needs to
2869 * look up the SIM based solely on bus number, and it's unclear whether
2870 * a list traversal would work for these situations.
2871 */
2872 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus +
2873 CISS_PHYSICAL_BASE);
2874 sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*),
2875 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
2876 if (sc->ciss_cam_sim == NULL) {
2877 ciss_printf(sc, "can't allocate memory for controller SIM\n");
2878 return(ENOMEM);
2879 }
2880
2881 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2882 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2883 "ciss", sc,
2884 device_get_unit(sc->ciss_dev),
2885 &sc->ciss_mtx,
2886 2,
2887 sc->ciss_max_requests - 2,
2888 sc->ciss_cam_devq)) == NULL) {
2889 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2890 return(ENOMEM);
2891 }
2892
2893 /*
2894 * Register bus with this SIM.
2895 */
2896 mtx_lock(&sc->ciss_mtx);
2897 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) {
2898 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2899 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2900 mtx_unlock(&sc->ciss_mtx);
2901 return (ENXIO);
2902 }
2903 }
2904 mtx_unlock(&sc->ciss_mtx);
2905 }
2906
2907 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2908 CISS_PHYSICAL_BASE; i++) {
2909 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2910 "ciss", sc,
2911 device_get_unit(sc->ciss_dev),
2912 &sc->ciss_mtx, 1,
2913 sc->ciss_max_requests - 2,
2914 sc->ciss_cam_devq)) == NULL) {
2915 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2916 return (ENOMEM);
2917 }
2918
2919 mtx_lock(&sc->ciss_mtx);
2920 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2921 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2922 mtx_unlock(&sc->ciss_mtx);
2923 return (ENXIO);
2924 }
2925 mtx_unlock(&sc->ciss_mtx);
2926 }
2927
2928 return(0);
2929 }
2930
2931 /************************************************************************
2932 * Initiate a rescan of the 'logical devices' SIM
2933 */
2934 static void
2935 ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target)
2936 {
2937 union ccb *ccb;
2938
2939 debug_called(1);
2940
2941 if ((ccb = xpt_alloc_ccb_nowait()) == NULL) {
2942 ciss_printf(sc, "rescan failed (can't allocate CCB)\n");
2943 return;
2944 }
2945
2946 if (xpt_create_path(&ccb->ccb_h.path, NULL,
2947 cam_sim_path(sc->ciss_cam_sim[bus]),
2948 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
2949 ciss_printf(sc, "rescan failed (can't create path)\n");
2950 xpt_free_ccb(ccb);
2951 return;
2952 }
2953 xpt_rescan(ccb);
2954 /* scan is now in progress */
2955 }
2956
2957 /************************************************************************
2958 * Handle requests coming from CAM
2959 */
2960 static void
2961 ciss_cam_action(struct cam_sim *sim, union ccb *ccb)
2962 {
2963 struct ciss_softc *sc;
2964 struct ccb_scsiio *csio;
2965 int bus, target;
2966 int physical;
2967
2968 sc = cam_sim_softc(sim);
2969 bus = cam_sim_bus(sim);
2970 csio = (struct ccb_scsiio *)&ccb->csio;
2971 target = csio->ccb_h.target_id;
2972 physical = CISS_IS_PHYSICAL(bus);
2973
2974 switch (ccb->ccb_h.func_code) {
2975
2976 /* perform SCSI I/O */
2977 case XPT_SCSI_IO:
2978 if (!ciss_cam_action_io(sim, csio))
2979 return;
2980 break;
2981
2982 /* perform geometry calculations */
2983 case XPT_CALC_GEOMETRY:
2984 {
2985 struct ccb_calc_geometry *ccg = &ccb->ccg;
2986 struct ciss_ldrive *ld;
2987
2988 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2989
2990 ld = NULL;
2991 if (!physical)
2992 ld = &sc->ciss_logical[bus][target];
2993
2994 /*
2995 * Use the cached geometry settings unless the fault tolerance
2996 * is invalid.
2997 */
2998 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) {
2999 u_int32_t secs_per_cylinder;
3000
3001 ccg->heads = 255;
3002 ccg->secs_per_track = 32;
3003 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
3004 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
3005 } else {
3006 ccg->heads = ld->cl_geometry.heads;
3007 ccg->secs_per_track = ld->cl_geometry.sectors;
3008 ccg->cylinders = ntohs(ld->cl_geometry.cylinders);
3009 }
3010 ccb->ccb_h.status = CAM_REQ_CMP;
3011 break;
3012 }
3013
3014 /* handle path attribute inquiry */
3015 case XPT_PATH_INQ:
3016 {
3017 struct ccb_pathinq *cpi = &ccb->cpi;
3018 int sg_length;
3019
3020 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
3021
3022 cpi->version_num = 1;
3023 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */
3024 cpi->target_sprt = 0;
3025 cpi->hba_misc = 0;
3026 cpi->max_target = sc->ciss_cfg->max_logical_supported;
3027 cpi->max_lun = 0; /* 'logical drive' channel only */
3028 cpi->initiator_id = sc->ciss_cfg->max_logical_supported;
3029 strlcpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
3030 strlcpy(cpi->hba_vid, "CISS", HBA_IDLEN);
3031 strlcpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
3032 cpi->unit_number = cam_sim_unit(sim);
3033 cpi->bus_id = cam_sim_bus(sim);
3034 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
3035 cpi->transport = XPORT_SPI;
3036 cpi->transport_version = 2;
3037 cpi->protocol = PROTO_SCSI;
3038 cpi->protocol_version = SCSI_REV_2;
3039 if (sc->ciss_cfg->max_sg_length == 0) {
3040 sg_length = 17;
3041 } else {
3042 /* XXX Fix for ZMR cards that advertise max_sg_length == 32
3043 * Confusing bit here. max_sg_length is usually a power of 2. We always
3044 * need to subtract 1 to account for partial pages. Then we need to
3045 * align on a valid PAGE_SIZE so we round down to the nearest power of 2.
3046 * Add 1 so we can then subtract it out in the assignment to maxio.
3047 * The reason for all these shenanigans is to create a maxio value that
3048 * creates IO operations to volumes that yield consistent operations
3049 * with good performance.
3050 */
3051 sg_length = sc->ciss_cfg->max_sg_length - 1;
3052 sg_length = (1 << (fls(sg_length) - 1)) + 1;
3053 }
3054 cpi->maxio = (min(CISS_MAX_SG_ELEMENTS, sg_length) - 1) * PAGE_SIZE;
3055 ccb->ccb_h.status = CAM_REQ_CMP;
3056 break;
3057 }
3058
3059 case XPT_GET_TRAN_SETTINGS:
3060 {
3061 struct ccb_trans_settings *cts = &ccb->cts;
3062 int bus, target;
3063 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
3064 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
3065
3066 bus = cam_sim_bus(sim);
3067 target = cts->ccb_h.target_id;
3068
3069 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
3070 /* disconnect always OK */
3071 cts->protocol = PROTO_SCSI;
3072 cts->protocol_version = SCSI_REV_2;
3073 cts->transport = XPORT_SPI;
3074 cts->transport_version = 2;
3075
3076 spi->valid = CTS_SPI_VALID_DISC;
3077 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
3078
3079 scsi->valid = CTS_SCSI_VALID_TQ;
3080 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
3081
3082 cts->ccb_h.status = CAM_REQ_CMP;
3083 break;
3084 }
3085
3086 default: /* we can't do this */
3087 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
3088 ccb->ccb_h.status = CAM_REQ_INVALID;
3089 break;
3090 }
3091
3092 xpt_done(ccb);
3093 }
3094
3095 /************************************************************************
3096 * Handle a CAM SCSI I/O request.
3097 */
3098 static int
3099 ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
3100 {
3101 struct ciss_softc *sc;
3102 int bus, target;
3103 struct ciss_request *cr;
3104 struct ciss_command *cc;
3105 int error;
3106
3107 sc = cam_sim_softc(sim);
3108 bus = cam_sim_bus(sim);
3109 target = csio->ccb_h.target_id;
3110
3111 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
3112
3113 /* check that the CDB pointer is not to a physical address */
3114 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
3115 debug(3, " CDB pointer is to physical address");
3116 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3117 }
3118
3119 /* abandon aborted ccbs or those that have failed validation */
3120 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
3121 debug(3, "abandoning CCB due to abort/validation failure");
3122 return(EINVAL);
3123 }
3124
3125 /* handle emulation of some SCSI commands ourself */
3126 if (ciss_cam_emulate(sc, csio))
3127 return(0);
3128
3129 /*
3130 * Get a request to manage this command. If we can't, return the
3131 * ccb, freeze the queue and flag so that we unfreeze it when a
3132 * request completes.
3133 */
3134 if ((error = ciss_get_request(sc, &cr)) != 0) {
3135 xpt_freeze_simq(sim, 1);
3136 sc->ciss_flags |= CISS_FLAG_BUSY;
3137 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3138 return(error);
3139 }
3140
3141 /*
3142 * Build the command.
3143 */
3144 cc = cr->cr_cc;
3145 cr->cr_data = csio;
3146 cr->cr_length = csio->dxfer_len;
3147 cr->cr_complete = ciss_cam_complete;
3148 cr->cr_private = csio;
3149
3150 /*
3151 * Target the right logical volume.
3152 */
3153 if (CISS_IS_PHYSICAL(bus))
3154 cc->header.address =
3155 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address;
3156 else
3157 cc->header.address =
3158 sc->ciss_logical[bus][target].cl_address;
3159 cc->cdb.cdb_length = csio->cdb_len;
3160 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3161 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */
3162 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
3163 cr->cr_flags = CISS_REQ_DATAOUT | CISS_REQ_CCB;
3164 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3165 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
3166 cr->cr_flags = CISS_REQ_DATAIN | CISS_REQ_CCB;
3167 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3168 } else {
3169 cr->cr_data = NULL;
3170 cr->cr_flags = 0;
3171 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
3172 }
3173 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1;
3174 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
3175 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len);
3176 } else {
3177 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len);
3178 }
3179
3180 /*
3181 * Submit the request to the adapter.
3182 *
3183 * Note that this may fail if we're unable to map the request (and
3184 * if we ever learn a transport layer other than simple, may fail
3185 * if the adapter rejects the command).
3186 */
3187 if ((error = ciss_start(cr)) != 0) {
3188 xpt_freeze_simq(sim, 1);
3189 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3190 if (error == EINPROGRESS) {
3191 error = 0;
3192 } else {
3193 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3194 ciss_release_request(cr);
3195 }
3196 return(error);
3197 }
3198
3199 return(0);
3200 }
3201
3202 /************************************************************************
3203 * Emulate SCSI commands the adapter doesn't handle as we might like.
3204 */
3205 static int
3206 ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio)
3207 {
3208 int bus, target;
3209 u_int8_t opcode;
3210
3211 target = csio->ccb_h.target_id;
3212 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3213 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3214 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0];
3215
3216 if (CISS_IS_PHYSICAL(bus)) {
3217 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) {
3218 csio->ccb_h.status |= CAM_SEL_TIMEOUT;
3219 xpt_done((union ccb *)csio);
3220 return(1);
3221 } else
3222 return(0);
3223 }
3224
3225 /*
3226 * Handle requests for volumes that don't exist or are not online.
3227 * A selection timeout is slightly better than an illegal request.
3228 * Other errors might be better.
3229 */
3230 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) {
3231 csio->ccb_h.status |= CAM_SEL_TIMEOUT;
3232 xpt_done((union ccb *)csio);
3233 return(1);
3234 }
3235
3236 /* if we have to fake Synchronise Cache */
3237 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) {
3238 /*
3239 * If this is a Synchronise Cache command, typically issued when
3240 * a device is closed, flush the adapter and complete now.
3241 */
3242 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
3243 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) {
3244 ciss_flush_adapter(sc);
3245 csio->ccb_h.status |= CAM_REQ_CMP;
3246 xpt_done((union ccb *)csio);
3247 return(1);
3248 }
3249 }
3250
3251 /*
3252 * A CISS target can only ever have one lun per target. REPORT_LUNS requires
3253 * at least one LUN field to be pre created for us, so snag it and fill in
3254 * the least significant byte indicating 1 LUN here. Emulate the command
3255 * return to shut up warning on console of a CDB error. swb
3256 */
3257 if (opcode == REPORT_LUNS && csio->dxfer_len > 0) {
3258 csio->data_ptr[3] = 8;
3259 csio->ccb_h.status |= CAM_REQ_CMP;
3260 xpt_done((union ccb *)csio);
3261 return(1);
3262 }
3263
3264 return(0);
3265 }
3266
3267 /************************************************************************
3268 * Check for possibly-completed commands.
3269 */
3270 static void
3271 ciss_cam_poll(struct cam_sim *sim)
3272 {
3273 cr_qhead_t qh;
3274 struct ciss_softc *sc = cam_sim_softc(sim);
3275
3276 debug_called(2);
3277
3278 STAILQ_INIT(&qh);
3279 if (sc->ciss_perf)
3280 ciss_perf_done(sc, &qh);
3281 else
3282 ciss_done(sc, &qh);
3283 ciss_complete(sc, &qh);
3284 }
3285
3286 /************************************************************************
3287 * Handle completion of a command - pass results back through the CCB
3288 */
3289 static void
3290 ciss_cam_complete(struct ciss_request *cr)
3291 {
3292 struct ciss_softc *sc;
3293 struct ciss_command *cc;
3294 struct ciss_error_info *ce;
3295 struct ccb_scsiio *csio;
3296 int scsi_status;
3297 int command_status;
3298
3299 debug_called(2);
3300
3301 sc = cr->cr_sc;
3302 cc = cr->cr_cc;
3303 ce = (struct ciss_error_info *)&(cc->sg[0]);
3304 csio = (struct ccb_scsiio *)cr->cr_private;
3305
3306 /*
3307 * Extract status values from request.
3308 */
3309 ciss_report_request(cr, &command_status, &scsi_status);
3310 csio->scsi_status = scsi_status;
3311
3312 /*
3313 * Handle specific SCSI status values.
3314 */
3315 switch(scsi_status) {
3316 /* no status due to adapter error */
3317 case -1:
3318 debug(0, "adapter error");
3319 csio->ccb_h.status |= CAM_REQ_CMP_ERR;
3320 break;
3321
3322 /* no status due to command completed OK */
3323 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */
3324 debug(2, "SCSI_STATUS_OK");
3325 csio->ccb_h.status |= CAM_REQ_CMP;
3326 break;
3327
3328 /* check condition, sense data included */
3329 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */
3330 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n",
3331 ce->sense_length, ce->residual_count);
3332 bzero(&csio->sense_data, SSD_FULL_SIZE);
3333 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length);
3334 if (csio->sense_len > ce->sense_length)
3335 csio->sense_resid = csio->sense_len - ce->sense_length;
3336 else
3337 csio->sense_resid = 0;
3338 csio->resid = ce->residual_count;
3339 csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
3340 #ifdef CISS_DEBUG
3341 {
3342 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0];
3343 debug(0, "sense key %x", scsi_get_sense_key(sns, csio->sense_len -
3344 csio->sense_resid, /*show_errors*/ 1));
3345 }
3346 #endif
3347 break;
3348
3349 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */
3350 debug(0, "SCSI_STATUS_BUSY");
3351 csio->ccb_h.status |= CAM_SCSI_BUSY;
3352 break;
3353
3354 default:
3355 debug(0, "unknown status 0x%x", csio->scsi_status);
3356 csio->ccb_h.status |= CAM_REQ_CMP_ERR;
3357 break;
3358 }
3359
3360 /* handle post-command fixup */
3361 ciss_cam_complete_fixup(sc, csio);
3362
3363 ciss_release_request(cr);
3364 if (sc->ciss_flags & CISS_FLAG_BUSY) {
3365 sc->ciss_flags &= ~CISS_FLAG_BUSY;
3366 if (csio->ccb_h.status & CAM_RELEASE_SIMQ)
3367 xpt_release_simq(xpt_path_sim(csio->ccb_h.path), 0);
3368 else
3369 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3370 }
3371 xpt_done((union ccb *)csio);
3372 }
3373
3374 /********************************************************************************
3375 * Fix up the result of some commands here.
3376 */
3377 static void
3378 ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio)
3379 {
3380 struct scsi_inquiry_data *inq;
3381 struct ciss_ldrive *cl;
3382 uint8_t *cdb;
3383 int bus, target;
3384
3385 cdb = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3386 (uint8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes;
3387 if (cdb[0] == INQUIRY &&
3388 (cdb[1] & SI_EVPD) == 0 &&
3389 (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
3390 csio->dxfer_len >= SHORT_INQUIRY_LENGTH) {
3391
3392 inq = (struct scsi_inquiry_data *)csio->data_ptr;
3393 target = csio->ccb_h.target_id;
3394 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3395
3396 /*
3397 * If the controller is in JBOD mode, there are no logical volumes.
3398 * Let the disks be probed and dealt with via CAM. Else, mask off
3399 * the physical disks and setup the parts of the inq structure for
3400 * the logical volume. swb
3401 */
3402 if( !(sc->ciss_id->PowerUPNvramFlags & PWR_UP_FLAG_JBOD_ENABLED)){
3403 if (CISS_IS_PHYSICAL(bus)) {
3404 if (SID_TYPE(inq) == T_DIRECT)
3405 inq->device = (inq->device & 0xe0) | T_NODEVICE;
3406 return;
3407 }
3408 cl = &sc->ciss_logical[bus][target];
3409
3410 padstr(inq->vendor, "HP",
3411 SID_VENDOR_SIZE);
3412 padstr(inq->product,
3413 ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance),
3414 SID_PRODUCT_SIZE);
3415 padstr(inq->revision,
3416 ciss_name_ldrive_status(cl->cl_lstatus->status),
3417 SID_REVISION_SIZE);
3418 }
3419 }
3420 }
3421
3422
3423 /********************************************************************************
3424 * Name the device at (target)
3425 *
3426 * XXX is this strictly correct?
3427 */
3428 static int
3429 ciss_name_device(struct ciss_softc *sc, int bus, int target)
3430 {
3431 struct cam_periph *periph;
3432 struct cam_path *path;
3433 int status;
3434
3435 if (CISS_IS_PHYSICAL(bus))
3436 return (0);
3437
3438 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]),
3439 target, 0);
3440
3441 if (status == CAM_REQ_CMP) {
3442 xpt_path_lock(path);
3443 periph = cam_periph_find(path, NULL);
3444 xpt_path_unlock(path);
3445 xpt_free_path(path);
3446 if (periph != NULL) {
3447 sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d",
3448 periph->periph_name, periph->unit_number);
3449 return(0);
3450 }
3451 }
3452 sc->ciss_logical[bus][target].cl_name[0] = 0;
3453 return(ENOENT);
3454 }
3455
3456 /************************************************************************
3457 * Periodic status monitoring.
3458 */
3459 static void
3460 ciss_periodic(void *arg)
3461 {
3462 struct ciss_softc *sc;
3463 struct ciss_request *cr = NULL;
3464 struct ciss_command *cc = NULL;
3465 int error = 0;
3466
3467 debug_called(1);
3468
3469 sc = (struct ciss_softc *)arg;
3470
3471 /*
3472 * Check the adapter heartbeat.
3473 */
3474 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) {
3475 sc->ciss_heart_attack++;
3476 debug(0, "adapter heart attack in progress 0x%x/%d",
3477 sc->ciss_heartbeat, sc->ciss_heart_attack);
3478 if (sc->ciss_heart_attack == 3) {
3479 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n");
3480 ciss_disable_adapter(sc);
3481 return;
3482 }
3483 } else {
3484 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat;
3485 sc->ciss_heart_attack = 0;
3486 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat);
3487 }
3488
3489 /*
3490 * Send the NOP message and wait for a response.
3491 */
3492 if (ciss_nop_message_heartbeat != 0 && (error = ciss_get_request(sc, &cr)) == 0) {
3493 cc = cr->cr_cc;
3494 cr->cr_complete = ciss_nop_complete;
3495 cc->cdb.cdb_length = 1;
3496 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
3497 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3498 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3499 cc->cdb.timeout = 0;
3500 cc->cdb.cdb[0] = CISS_OPCODE_MESSAGE_NOP;
3501
3502 if ((error = ciss_start(cr)) != 0) {
3503 ciss_printf(sc, "SENDING NOP MESSAGE FAILED\n");
3504 }
3505 }
3506
3507 /*
3508 * If the notify event request has died for some reason, or has
3509 * not started yet, restart it.
3510 */
3511 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) {
3512 debug(0, "(re)starting Event Notify chain");
3513 ciss_notify_event(sc);
3514 }
3515
3516 /*
3517 * Reschedule.
3518 */
3519 callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz, ciss_periodic, sc);
3520 }
3521
3522 static void
3523 ciss_nop_complete(struct ciss_request *cr)
3524 {
3525 struct ciss_softc *sc;
3526 static int first_time = 1;
3527
3528 sc = cr->cr_sc;
3529 if (ciss_report_request(cr, NULL, NULL) != 0) {
3530 if (first_time == 1) {
3531 first_time = 0;
3532 ciss_printf(sc, "SENDING NOP MESSAGE FAILED (not logging anymore)\n");
3533 }
3534 }
3535
3536 ciss_release_request(cr);
3537 }
3538
3539 /************************************************************************
3540 * Disable the adapter.
3541 *
3542 * The all requests in completed queue is failed with hardware error.
3543 * This will cause failover in a multipath configuration.
3544 */
3545 static void
3546 ciss_disable_adapter(struct ciss_softc *sc)
3547 {
3548 cr_qhead_t qh;
3549 struct ciss_request *cr;
3550 struct ciss_command *cc;
3551 struct ciss_error_info *ce;
3552 int i;
3553
3554 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
3555 pci_disable_busmaster(sc->ciss_dev);
3556 sc->ciss_flags &= ~CISS_FLAG_RUNNING;
3557
3558 for (i = 1; i < sc->ciss_max_requests; i++) {
3559 cr = &sc->ciss_request[i];
3560 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
3561 continue;
3562
3563 cc = cr->cr_cc;
3564 ce = (struct ciss_error_info *)&(cc->sg[0]);
3565 ce->command_status = CISS_CMD_STATUS_HARDWARE_ERROR;
3566 ciss_enqueue_complete(cr, &qh);
3567 }
3568
3569 for (;;) {
3570 if ((cr = ciss_dequeue_complete(sc, &qh)) == NULL)
3571 break;
3572
3573 /*
3574 * If the request has a callback, invoke it.
3575 */
3576 if (cr->cr_complete != NULL) {
3577 cr->cr_complete(cr);
3578 continue;
3579 }
3580
3581 /*
3582 * If someone is sleeping on this request, wake them up.
3583 */
3584 if (cr->cr_flags & CISS_REQ_SLEEP) {
3585 cr->cr_flags &= ~CISS_REQ_SLEEP;
3586 wakeup(cr);
3587 continue;
3588 }
3589 }
3590 }
3591
3592 /************************************************************************
3593 * Request a notification response from the adapter.
3594 *
3595 * If (cr) is NULL, this is the first request of the adapter, so
3596 * reset the adapter's message pointer and start with the oldest
3597 * message available.
3598 */
3599 static void
3600 ciss_notify_event(struct ciss_softc *sc)
3601 {
3602 struct ciss_request *cr;
3603 struct ciss_command *cc;
3604 struct ciss_notify_cdb *cnc;
3605 int error;
3606
3607 debug_called(1);
3608
3609 cr = sc->ciss_periodic_notify;
3610
3611 /* get a request if we don't already have one */
3612 if (cr == NULL) {
3613 if ((error = ciss_get_request(sc, &cr)) != 0) {
3614 debug(0, "can't get notify event request");
3615 goto out;
3616 }
3617 sc->ciss_periodic_notify = cr;
3618 cr->cr_complete = ciss_notify_complete;
3619 debug(1, "acquired request %d", cr->cr_tag);
3620 }
3621
3622 /*
3623 * Get a databuffer if we don't already have one, note that the
3624 * adapter command wants a larger buffer than the actual
3625 * structure.
3626 */
3627 if (cr->cr_data == NULL) {
3628 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3629 debug(0, "can't get notify event request buffer");
3630 error = ENOMEM;
3631 goto out;
3632 }
3633 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3634 }
3635
3636 /* re-setup the request's command (since we never release it) XXX overkill*/
3637 ciss_preen_command(cr);
3638
3639 /* (re)build the notify event command */
3640 cc = cr->cr_cc;
3641 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3642 cc->header.address.physical.bus = 0;
3643 cc->header.address.physical.target = 0;
3644
3645 cc->cdb.cdb_length = sizeof(*cnc);
3646 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3647 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3648 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3649 cc->cdb.timeout = 0; /* no timeout, we hope */
3650
3651 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3652 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE);
3653 cnc->opcode = CISS_OPCODE_READ;
3654 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT;
3655 cnc->timeout = 0; /* no timeout, we hope */
3656 cnc->synchronous = 0;
3657 cnc->ordered = 0;
3658 cnc->seek_to_oldest = 0;
3659 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0)
3660 cnc->new_only = 1;
3661 else
3662 cnc->new_only = 0;
3663 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3664
3665 /* submit the request */
3666 error = ciss_start(cr);
3667
3668 out:
3669 if (error) {
3670 if (cr != NULL) {
3671 if (cr->cr_data != NULL)
3672 free(cr->cr_data, CISS_MALLOC_CLASS);
3673 ciss_release_request(cr);
3674 }
3675 sc->ciss_periodic_notify = NULL;
3676 debug(0, "can't submit notify event request");
3677 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3678 } else {
3679 debug(1, "notify event submitted");
3680 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK;
3681 }
3682 }
3683
3684 static void
3685 ciss_notify_complete(struct ciss_request *cr)
3686 {
3687 struct ciss_command *cc;
3688 struct ciss_notify *cn;
3689 struct ciss_softc *sc;
3690 int scsi_status;
3691 int command_status;
3692 debug_called(1);
3693
3694 cc = cr->cr_cc;
3695 cn = (struct ciss_notify *)cr->cr_data;
3696 sc = cr->cr_sc;
3697
3698 /*
3699 * Report request results, decode status.
3700 */
3701 ciss_report_request(cr, &command_status, &scsi_status);
3702
3703 /*
3704 * Abort the chain on a fatal error.
3705 *
3706 * XXX which of these are actually errors?
3707 */
3708 if ((command_status != CISS_CMD_STATUS_SUCCESS) &&
3709 (command_status != CISS_CMD_STATUS_TARGET_STATUS) &&
3710 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */
3711 ciss_printf(sc, "fatal error in Notify Event request (%s)\n",
3712 ciss_name_command_status(command_status));
3713 ciss_release_request(cr);
3714 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3715 return;
3716 }
3717
3718 /*
3719 * If the adapter gave us a text message, print it.
3720 */
3721 if (cn->message[0] != 0)
3722 ciss_printf(sc, "*** %.80s\n", cn->message);
3723
3724 debug(0, "notify event class %d subclass %d detail %d",
3725 cn->class, cn->subclass, cn->detail);
3726
3727 /*
3728 * If the response indicates that the notifier has been aborted,
3729 * release the notifier command.
3730 */
3731 if ((cn->class == CISS_NOTIFY_NOTIFIER) &&
3732 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) &&
3733 (cn->detail == 1)) {
3734 debug(0, "notifier exiting");
3735 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3736 ciss_release_request(cr);
3737 sc->ciss_periodic_notify = NULL;
3738 wakeup(&sc->ciss_periodic_notify);
3739 } else {
3740 /* Handle notify events in a kernel thread */
3741 ciss_enqueue_notify(cr);
3742 sc->ciss_periodic_notify = NULL;
3743 wakeup(&sc->ciss_periodic_notify);
3744 wakeup(&sc->ciss_notify);
3745 }
3746 /*
3747 * Send a new notify event command, if we're not aborting.
3748 */
3749 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) {
3750 ciss_notify_event(sc);
3751 }
3752 }
3753
3754 /************************************************************************
3755 * Abort the Notify Event chain.
3756 *
3757 * Note that we can't just abort the command in progress; we have to
3758 * explicitly issue an Abort Notify Event command in order for the
3759 * adapter to clean up correctly.
3760 *
3761 * If we are called with CISS_FLAG_ABORTING set in the adapter softc,
3762 * the chain will not restart itself.
3763 */
3764 static int
3765 ciss_notify_abort(struct ciss_softc *sc)
3766 {
3767 struct ciss_request *cr;
3768 struct ciss_command *cc;
3769 struct ciss_notify_cdb *cnc;
3770 int error, command_status, scsi_status;
3771
3772 debug_called(1);
3773
3774 cr = NULL;
3775 error = 0;
3776
3777 /* verify that there's an outstanding command */
3778 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3779 goto out;
3780
3781 /* get a command to issue the abort with */
3782 if ((error = ciss_get_request(sc, &cr)))
3783 goto out;
3784
3785 /* get a buffer for the result */
3786 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3787 debug(0, "can't get notify event request buffer");
3788 error = ENOMEM;
3789 goto out;
3790 }
3791 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3792
3793 /* build the CDB */
3794 cc = cr->cr_cc;
3795 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3796 cc->header.address.physical.bus = 0;
3797 cc->header.address.physical.target = 0;
3798 cc->cdb.cdb_length = sizeof(*cnc);
3799 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3800 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3801 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3802 cc->cdb.timeout = 0; /* no timeout, we hope */
3803
3804 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3805 bzero(cnc, sizeof(*cnc));
3806 cnc->opcode = CISS_OPCODE_WRITE;
3807 cnc->command = CISS_COMMAND_ABORT_NOTIFY;
3808 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3809
3810 ciss_print_request(cr);
3811
3812 /*
3813 * Submit the request and wait for it to complete.
3814 */
3815 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3816 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error);
3817 goto out;
3818 }
3819
3820 /*
3821 * Check response.
3822 */
3823 ciss_report_request(cr, &command_status, &scsi_status);
3824 switch(command_status) {
3825 case CISS_CMD_STATUS_SUCCESS:
3826 break;
3827 case CISS_CMD_STATUS_INVALID_COMMAND:
3828 /*
3829 * Some older adapters don't support the CISS version of this
3830 * command. Fall back to using the BMIC version.
3831 */
3832 error = ciss_notify_abort_bmic(sc);
3833 if (error != 0)
3834 goto out;
3835 break;
3836
3837 case CISS_CMD_STATUS_TARGET_STATUS:
3838 /*
3839 * This can happen if the adapter thinks there wasn't an outstanding
3840 * Notify Event command but we did. We clean up here.
3841 */
3842 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) {
3843 if (sc->ciss_periodic_notify != NULL)
3844 ciss_release_request(sc->ciss_periodic_notify);
3845 error = 0;
3846 goto out;
3847 }
3848 /* FALLTHROUGH */
3849
3850 default:
3851 ciss_printf(sc, "Abort Notify Event command failed (%s)\n",
3852 ciss_name_command_status(command_status));
3853 error = EIO;
3854 goto out;
3855 }
3856
3857 /*
3858 * Sleep waiting for the notifier command to complete. Note
3859 * that if it doesn't, we may end up in a bad situation, since
3860 * the adapter may deliver it later. Also note that the adapter
3861 * requires the Notify Event command to be cancelled in order to
3862 * maintain internal bookkeeping.
3863 */
3864 while (sc->ciss_periodic_notify != NULL) {
3865 error = msleep(&sc->ciss_periodic_notify, &sc->ciss_mtx, PRIBIO, "cissNEA", hz * 5);
3866 if (error == EWOULDBLOCK) {
3867 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n");
3868 break;
3869 }
3870 }
3871
3872 out:
3873 /* release the cancel request */
3874 if (cr != NULL) {
3875 if (cr->cr_data != NULL)
3876 free(cr->cr_data, CISS_MALLOC_CLASS);
3877 ciss_release_request(cr);
3878 }
3879 if (error == 0)
3880 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3881 return(error);
3882 }
3883
3884 /************************************************************************
3885 * Abort the Notify Event chain using a BMIC command.
3886 */
3887 static int
3888 ciss_notify_abort_bmic(struct ciss_softc *sc)
3889 {
3890 struct ciss_request *cr;
3891 int error, command_status;
3892
3893 debug_called(1);
3894
3895 cr = NULL;
3896 error = 0;
3897
3898 /* verify that there's an outstanding command */
3899 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3900 goto out;
3901
3902 /*
3903 * Build a BMIC command to cancel the Notify on Event command.
3904 *
3905 * Note that we are sending a CISS opcode here. Odd.
3906 */
3907 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY,
3908 NULL, 0)) != 0)
3909 goto out;
3910
3911 /*
3912 * Submit the request and wait for it to complete.
3913 */
3914 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3915 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error);
3916 goto out;
3917 }
3918
3919 /*
3920 * Check response.
3921 */
3922 ciss_report_request(cr, &command_status, NULL);
3923 switch(command_status) {
3924 case CISS_CMD_STATUS_SUCCESS:
3925 break;
3926 default:
3927 ciss_printf(sc, "error cancelling Notify on Event (%s)\n",
3928 ciss_name_command_status(command_status));
3929 error = EIO;
3930 goto out;
3931 }
3932
3933 out:
3934 if (cr != NULL)
3935 ciss_release_request(cr);
3936 return(error);
3937 }
3938
3939 /************************************************************************
3940 * Handle rescanning all the logical volumes when a notify event
3941 * causes the drives to come online or offline.
3942 */
3943 static void
3944 ciss_notify_rescan_logical(struct ciss_softc *sc)
3945 {
3946 struct ciss_lun_report *cll;
3947 struct ciss_ldrive *ld;
3948 int i, j, ndrives;
3949
3950 /*
3951 * We must rescan all logical volumes to get the right logical
3952 * drive address.
3953 */
3954 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
3955 sc->ciss_cfg->max_logical_supported);
3956 if (cll == NULL)
3957 return;
3958
3959 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
3960
3961 /*
3962 * Delete any of the drives which were destroyed by the
3963 * firmware.
3964 */
3965 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
3966 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
3967 ld = &sc->ciss_logical[i][j];
3968
3969 if (ld->cl_update == 0)
3970 continue;
3971
3972 if (ld->cl_status != CISS_LD_ONLINE) {
3973 ciss_cam_rescan_target(sc, i, j);
3974 ld->cl_update = 0;
3975 if (ld->cl_ldrive)
3976 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
3977 if (ld->cl_lstatus)
3978 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
3979
3980 ld->cl_ldrive = NULL;
3981 ld->cl_lstatus = NULL;
3982 }
3983 }
3984 }
3985
3986 /*
3987 * Scan for new drives.
3988 */
3989 for (i = 0; i < ndrives; i++) {
3990 int bus, target;
3991
3992 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
3993 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
3994 ld = &sc->ciss_logical[bus][target];
3995
3996 if (ld->cl_update == 0)
3997 continue;
3998
3999 ld->cl_update = 0;
4000 ld->cl_address = cll->lun[i];
4001 ld->cl_controller = &sc->ciss_controllers[bus];
4002 if (ciss_identify_logical(sc, ld) == 0) {
4003 ciss_cam_rescan_target(sc, bus, target);
4004 }
4005 }
4006 free(cll, CISS_MALLOC_CLASS);
4007 }
4008
4009 /************************************************************************
4010 * Handle a notify event relating to the status of a logical drive.
4011 *
4012 * XXX need to be able to defer some of these to properly handle
4013 * calling the "ID Physical drive" command, unless the 'extended'
4014 * drive IDs are always in BIG_MAP format.
4015 */
4016 static void
4017 ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn)
4018 {
4019 struct ciss_ldrive *ld;
4020 int ostatus, bus, target;
4021
4022 debug_called(2);
4023
4024 bus = cn->device.physical.bus;
4025 target = cn->data.logical_status.logical_drive;
4026 ld = &sc->ciss_logical[bus][target];
4027
4028 switch (cn->subclass) {
4029 case CISS_NOTIFY_LOGICAL_STATUS:
4030 switch (cn->detail) {
4031 case 0:
4032 ciss_name_device(sc, bus, target);
4033 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n",
4034 cn->data.logical_status.logical_drive, ld->cl_name,
4035 ciss_name_ldrive_status(cn->data.logical_status.previous_state),
4036 ciss_name_ldrive_status(cn->data.logical_status.new_state),
4037 cn->data.logical_status.spare_state,
4038 "\2\1configured\2rebuilding\3failed\4in use\5available\n");
4039
4040 /*
4041 * Update our idea of the drive's status.
4042 */
4043 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state);
4044 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
4045 if (ld->cl_lstatus != NULL)
4046 ld->cl_lstatus->status = cn->data.logical_status.new_state;
4047
4048 /*
4049 * Have CAM rescan the drive if its status has changed.
4050 */
4051 if (ostatus != ld->cl_status) {
4052 ld->cl_update = 1;
4053 ciss_notify_rescan_logical(sc);
4054 }
4055
4056 break;
4057
4058 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */
4059 ciss_name_device(sc, bus, target);
4060 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n",
4061 cn->data.logical_status.logical_drive, ld->cl_name);
4062 ciss_accept_media(sc, ld);
4063
4064 ld->cl_update = 1;
4065 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
4066 ciss_notify_rescan_logical(sc);
4067 break;
4068
4069 case 2:
4070 case 3:
4071 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n",
4072 cn->data.rebuild_aborted.logical_drive,
4073 ld->cl_name,
4074 (cn->detail == 2) ? "read" : "write");
4075 break;
4076 }
4077 break;
4078
4079 case CISS_NOTIFY_LOGICAL_ERROR:
4080 if (cn->detail == 0) {
4081 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n",
4082 cn->data.io_error.logical_drive,
4083 ld->cl_name,
4084 cn->data.io_error.failure_bus,
4085 cn->data.io_error.failure_drive);
4086 /* XXX should we take the drive down at this point, or will we be told? */
4087 }
4088 break;
4089
4090 case CISS_NOTIFY_LOGICAL_SURFACE:
4091 if (cn->detail == 0)
4092 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n",
4093 cn->data.consistency_completed.logical_drive,
4094 ld->cl_name);
4095 break;
4096 }
4097 }
4098
4099 /************************************************************************
4100 * Handle a notify event relating to the status of a physical drive.
4101 */
4102 static void
4103 ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn)
4104 {
4105 }
4106
4107 /************************************************************************
4108 * Handle a notify event relating to the status of a physical drive.
4109 */
4110 static void
4111 ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn)
4112 {
4113 struct ciss_lun_report *cll = NULL;
4114 int bus, target;
4115
4116 switch (cn->subclass) {
4117 case CISS_NOTIFY_HOTPLUG_PHYSICAL:
4118 case CISS_NOTIFY_HOTPLUG_NONDISK:
4119 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number);
4120 target =
4121 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number);
4122
4123 if (cn->detail == 0) {
4124 /*
4125 * Mark the device offline so that it'll start producing selection
4126 * timeouts to the upper layer.
4127 */
4128 if ((bus >= 0) && (target >= 0))
4129 sc->ciss_physical[bus][target].cp_online = 0;
4130 } else {
4131 /*
4132 * Rescan the physical lun list for new items
4133 */
4134 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
4135 sc->ciss_cfg->max_physical_supported);
4136 if (cll == NULL) {
4137 ciss_printf(sc, "Warning, cannot get physical lun list\n");
4138 break;
4139 }
4140 ciss_filter_physical(sc, cll);
4141 }
4142 break;
4143
4144 default:
4145 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass);
4146 return;
4147 }
4148
4149 if (cll != NULL)
4150 free(cll, CISS_MALLOC_CLASS);
4151 }
4152
4153 /************************************************************************
4154 * Handle deferred processing of notify events. Notify events may need
4155 * sleep which is unsafe during an interrupt.
4156 */
4157 static void
4158 ciss_notify_thread(void *arg)
4159 {
4160 struct ciss_softc *sc;
4161 struct ciss_request *cr;
4162 struct ciss_notify *cn;
4163
4164 sc = (struct ciss_softc *)arg;
4165 mtx_lock(&sc->ciss_mtx);
4166
4167 for (;;) {
4168 if (STAILQ_EMPTY(&sc->ciss_notify) != 0 &&
4169 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) {
4170 msleep(&sc->ciss_notify, &sc->ciss_mtx, PUSER, "idle", 0);
4171 }
4172
4173 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT)
4174 break;
4175
4176 cr = ciss_dequeue_notify(sc);
4177
4178 if (cr == NULL)
4179 panic("cr null");
4180 cn = (struct ciss_notify *)cr->cr_data;
4181
4182 switch (cn->class) {
4183 case CISS_NOTIFY_HOTPLUG:
4184 ciss_notify_hotplug(sc, cn);
4185 break;
4186 case CISS_NOTIFY_LOGICAL:
4187 ciss_notify_logical(sc, cn);
4188 break;
4189 case CISS_NOTIFY_PHYSICAL:
4190 ciss_notify_physical(sc, cn);
4191 break;
4192 }
4193
4194 ciss_release_request(cr);
4195
4196 }
4197 sc->ciss_notify_thread = NULL;
4198 wakeup(&sc->ciss_notify_thread);
4199
4200 mtx_unlock(&sc->ciss_mtx);
4201 kproc_exit(0);
4202 }
4203
4204 /************************************************************************
4205 * Start the notification kernel thread.
4206 */
4207 static void
4208 ciss_spawn_notify_thread(struct ciss_softc *sc)
4209 {
4210
4211 if (kproc_create((void(*)(void *))ciss_notify_thread, sc,
4212 &sc->ciss_notify_thread, 0, 0, "ciss_notify%d",
4213 device_get_unit(sc->ciss_dev)))
4214 panic("Could not create notify thread\n");
4215 }
4216
4217 /************************************************************************
4218 * Kill the notification kernel thread.
4219 */
4220 static void
4221 ciss_kill_notify_thread(struct ciss_softc *sc)
4222 {
4223
4224 if (sc->ciss_notify_thread == NULL)
4225 return;
4226
4227 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT;
4228 wakeup(&sc->ciss_notify);
4229 msleep(&sc->ciss_notify_thread, &sc->ciss_mtx, PUSER, "thtrm", 0);
4230 }
4231
4232 /************************************************************************
4233 * Print a request.
4234 */
4235 static void
4236 ciss_print_request(struct ciss_request *cr)
4237 {
4238 struct ciss_softc *sc;
4239 struct ciss_command *cc;
4240 int i;
4241
4242 sc = cr->cr_sc;
4243 cc = cr->cr_cc;
4244
4245 ciss_printf(sc, "REQUEST @ %p\n", cr);
4246 ciss_printf(sc, " data %p/%d tag %d flags %b\n",
4247 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags,
4248 "\2\1mapped\2sleep\3poll\4dataout\5datain\n");
4249 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n",
4250 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag);
4251 switch(cc->header.address.mode.mode) {
4252 case CISS_HDR_ADDRESS_MODE_PERIPHERAL:
4253 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL:
4254 ciss_printf(sc, " physical bus %d target %d\n",
4255 cc->header.address.physical.bus, cc->header.address.physical.target);
4256 break;
4257 case CISS_HDR_ADDRESS_MODE_LOGICAL:
4258 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun);
4259 break;
4260 }
4261 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n",
4262 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" :
4263 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" :
4264 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??",
4265 cc->cdb.cdb_length,
4266 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" :
4267 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??",
4268 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" :
4269 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" :
4270 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" :
4271 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" :
4272 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??");
4273 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " ");
4274
4275 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) {
4276 /* XXX print error info */
4277 } else {
4278 /* since we don't use chained s/g, don't support it here */
4279 for (i = 0; i < cc->header.sg_in_list; i++) {
4280 if ((i % 4) == 0)
4281 ciss_printf(sc, " ");
4282 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length);
4283 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1)))
4284 printf("\n");
4285 }
4286 }
4287 }
4288
4289 /************************************************************************
4290 * Print information about the status of a logical drive.
4291 */
4292 static void
4293 ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld)
4294 {
4295 int bus, target, i;
4296
4297 if (ld->cl_lstatus == NULL) {
4298 printf("does not exist\n");
4299 return;
4300 }
4301
4302 /* print drive status */
4303 switch(ld->cl_lstatus->status) {
4304 case CISS_LSTATUS_OK:
4305 printf("online\n");
4306 break;
4307 case CISS_LSTATUS_INTERIM_RECOVERY:
4308 printf("in interim recovery mode\n");
4309 break;
4310 case CISS_LSTATUS_READY_RECOVERY:
4311 printf("ready to begin recovery\n");
4312 break;
4313 case CISS_LSTATUS_RECOVERING:
4314 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4315 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4316 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n",
4317 bus, target, ld->cl_lstatus->blocks_to_recover);
4318 break;
4319 case CISS_LSTATUS_EXPANDING:
4320 printf("being expanded, %u blocks remaining\n",
4321 ld->cl_lstatus->blocks_to_recover);
4322 break;
4323 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4324 printf("queued for expansion\n");
4325 break;
4326 case CISS_LSTATUS_FAILED:
4327 printf("queued for expansion\n");
4328 break;
4329 case CISS_LSTATUS_WRONG_PDRIVE:
4330 printf("wrong physical drive inserted\n");
4331 break;
4332 case CISS_LSTATUS_MISSING_PDRIVE:
4333 printf("missing a needed physical drive\n");
4334 break;
4335 case CISS_LSTATUS_BECOMING_READY:
4336 printf("becoming ready\n");
4337 break;
4338 }
4339
4340 /* print failed physical drives */
4341 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) {
4342 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]);
4343 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]);
4344 if (bus == -1)
4345 continue;
4346 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target,
4347 ld->cl_lstatus->drive_failure_map[i]);
4348 }
4349 }
4350
4351 #ifdef CISS_DEBUG
4352 #include "opt_ddb.h"
4353 #ifdef DDB
4354 #include <ddb/ddb.h>
4355 /************************************************************************
4356 * Print information about the controller/driver.
4357 */
4358 static void
4359 ciss_print_adapter(struct ciss_softc *sc)
4360 {
4361 int i, j;
4362
4363 ciss_printf(sc, "ADAPTER:\n");
4364 for (i = 0; i < CISSQ_COUNT; i++) {
4365 ciss_printf(sc, "%s %d/%d\n",
4366 i == 0 ? "free" :
4367 i == 1 ? "busy" : "complete",
4368 sc->ciss_qstat[i].q_length,
4369 sc->ciss_qstat[i].q_max);
4370 }
4371 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests);
4372 ciss_printf(sc, "flags %b\n", sc->ciss_flags,
4373 "\2\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n");
4374
4375 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
4376 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
4377 ciss_printf(sc, "LOGICAL DRIVE %d: ", i);
4378 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]);
4379 }
4380 }
4381
4382 /* XXX Should physical drives be printed out here? */
4383
4384 for (i = 1; i < sc->ciss_max_requests; i++)
4385 ciss_print_request(sc->ciss_request + i);
4386 }
4387
4388 /* DDB hook */
4389 DB_COMMAND(ciss_prt, db_ciss_prt)
4390 {
4391 struct ciss_softc *sc;
4392 devclass_t dc;
4393 int maxciss, i;
4394
4395 dc = devclass_find("ciss");
4396 if ( dc == NULL ) {
4397 printf("%s: can't find devclass!\n", __func__);
4398 return;
4399 }
4400 maxciss = devclass_get_maxunit(dc);
4401 for (i = 0; i < maxciss; i++) {
4402 sc = devclass_get_softc(dc, i);
4403 ciss_print_adapter(sc);
4404 }
4405 }
4406 #endif
4407 #endif
4408
4409 /************************************************************************
4410 * Return a name for a logical drive status value.
4411 */
4412 static const char *
4413 ciss_name_ldrive_status(int status)
4414 {
4415 switch (status) {
4416 case CISS_LSTATUS_OK:
4417 return("OK");
4418 case CISS_LSTATUS_FAILED:
4419 return("failed");
4420 case CISS_LSTATUS_NOT_CONFIGURED:
4421 return("not configured");
4422 case CISS_LSTATUS_INTERIM_RECOVERY:
4423 return("interim recovery");
4424 case CISS_LSTATUS_READY_RECOVERY:
4425 return("ready for recovery");
4426 case CISS_LSTATUS_RECOVERING:
4427 return("recovering");
4428 case CISS_LSTATUS_WRONG_PDRIVE:
4429 return("wrong physical drive inserted");
4430 case CISS_LSTATUS_MISSING_PDRIVE:
4431 return("missing physical drive");
4432 case CISS_LSTATUS_EXPANDING:
4433 return("expanding");
4434 case CISS_LSTATUS_BECOMING_READY:
4435 return("becoming ready");
4436 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4437 return("queued for expansion");
4438 }
4439 return("unknown status");
4440 }
4441
4442 /************************************************************************
4443 * Return an online/offline/nonexistent value for a logical drive
4444 * status value.
4445 */
4446 static int
4447 ciss_decode_ldrive_status(int status)
4448 {
4449 switch(status) {
4450 case CISS_LSTATUS_NOT_CONFIGURED:
4451 return(CISS_LD_NONEXISTENT);
4452
4453 case CISS_LSTATUS_OK:
4454 case CISS_LSTATUS_INTERIM_RECOVERY:
4455 case CISS_LSTATUS_READY_RECOVERY:
4456 case CISS_LSTATUS_RECOVERING:
4457 case CISS_LSTATUS_EXPANDING:
4458 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4459 return(CISS_LD_ONLINE);
4460
4461 case CISS_LSTATUS_FAILED:
4462 case CISS_LSTATUS_WRONG_PDRIVE:
4463 case CISS_LSTATUS_MISSING_PDRIVE:
4464 case CISS_LSTATUS_BECOMING_READY:
4465 default:
4466 return(CISS_LD_OFFLINE);
4467 }
4468 }
4469
4470
4471 /************************************************************************
4472 * Return a name for a logical drive's organisation.
4473 */
4474 static const char *
4475 ciss_name_ldrive_org(int org)
4476 {
4477 switch(org) {
4478 case CISS_LDRIVE_RAID0:
4479 return("RAID 0");
4480 case CISS_LDRIVE_RAID1:
4481 return("RAID 1(1+0)");
4482 case CISS_LDRIVE_RAID4:
4483 return("RAID 4");
4484 case CISS_LDRIVE_RAID5:
4485 return("RAID 5");
4486 case CISS_LDRIVE_RAID51:
4487 return("RAID 5+1");
4488 case CISS_LDRIVE_RAIDADG:
4489 return("RAID ADG");
4490 }
4491 return("unknown");
4492 }
4493
4494 /************************************************************************
4495 * Return a name for a command status value.
4496 */
4497 static const char *
4498 ciss_name_command_status(int status)
4499 {
4500 switch(status) {
4501 case CISS_CMD_STATUS_SUCCESS:
4502 return("success");
4503 case CISS_CMD_STATUS_TARGET_STATUS:
4504 return("target status");
4505 case CISS_CMD_STATUS_DATA_UNDERRUN:
4506 return("data underrun");
4507 case CISS_CMD_STATUS_DATA_OVERRUN:
4508 return("data overrun");
4509 case CISS_CMD_STATUS_INVALID_COMMAND:
4510 return("invalid command");
4511 case CISS_CMD_STATUS_PROTOCOL_ERROR:
4512 return("protocol error");
4513 case CISS_CMD_STATUS_HARDWARE_ERROR:
4514 return("hardware error");
4515 case CISS_CMD_STATUS_CONNECTION_LOST:
4516 return("connection lost");
4517 case CISS_CMD_STATUS_ABORTED:
4518 return("aborted");
4519 case CISS_CMD_STATUS_ABORT_FAILED:
4520 return("abort failed");
4521 case CISS_CMD_STATUS_UNSOLICITED_ABORT:
4522 return("unsolicited abort");
4523 case CISS_CMD_STATUS_TIMEOUT:
4524 return("timeout");
4525 case CISS_CMD_STATUS_UNABORTABLE:
4526 return("unabortable");
4527 }
4528 return("unknown status");
4529 }
4530
4531 /************************************************************************
4532 * Handle an open on the control device.
4533 */
4534 static int
4535 ciss_open(struct cdev *dev, int flags, int fmt, struct thread *p)
4536 {
4537 struct ciss_softc *sc;
4538
4539 debug_called(1);
4540
4541 sc = (struct ciss_softc *)dev->si_drv1;
4542
4543 /* we might want to veto if someone already has us open */
4544
4545 mtx_lock(&sc->ciss_mtx);
4546 sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN;
4547 mtx_unlock(&sc->ciss_mtx);
4548 return(0);
4549 }
4550
4551 /************************************************************************
4552 * Handle the last close on the control device.
4553 */
4554 static int
4555 ciss_close(struct cdev *dev, int flags, int fmt, struct thread *p)
4556 {
4557 struct ciss_softc *sc;
4558
4559 debug_called(1);
4560
4561 sc = (struct ciss_softc *)dev->si_drv1;
4562
4563 mtx_lock(&sc->ciss_mtx);
4564 sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN;
4565 mtx_unlock(&sc->ciss_mtx);
4566 return (0);
4567 }
4568
4569 /********************************************************************************
4570 * Handle adapter-specific control operations.
4571 *
4572 * Note that the API here is compatible with the Linux driver, in order to
4573 * simplify the porting of Compaq's userland tools.
4574 */
4575 static int
4576 ciss_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *p)
4577 {
4578 struct ciss_softc *sc;
4579 IOCTL_Command_struct *ioc = (IOCTL_Command_struct *)addr;
4580 #ifdef __amd64__
4581 IOCTL_Command_struct32 *ioc32 = (IOCTL_Command_struct32 *)addr;
4582 IOCTL_Command_struct ioc_swab;
4583 #endif
4584 int error;
4585
4586 debug_called(1);
4587
4588 sc = (struct ciss_softc *)dev->si_drv1;
4589 error = 0;
4590 mtx_lock(&sc->ciss_mtx);
4591
4592 switch(cmd) {
4593 case CCISS_GETQSTATS:
4594 {
4595 union ciss_statrequest *cr = (union ciss_statrequest *)addr;
4596
4597 switch (cr->cs_item) {
4598 case CISSQ_FREE:
4599 case CISSQ_NOTIFY:
4600 bcopy(&sc->ciss_qstat[cr->cs_item], &cr->cs_qstat,
4601 sizeof(struct ciss_qstat));
4602 break;
4603 default:
4604 error = ENOIOCTL;
4605 break;
4606 }
4607
4608 break;
4609 }
4610
4611 case CCISS_GETPCIINFO:
4612 {
4613 cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr;
4614
4615 pis->bus = pci_get_bus(sc->ciss_dev);
4616 pis->dev_fn = pci_get_slot(sc->ciss_dev);
4617 pis->board_id = (pci_get_subvendor(sc->ciss_dev) << 16) |
4618 pci_get_subdevice(sc->ciss_dev);
4619
4620 break;
4621 }
4622
4623 case CCISS_GETINTINFO:
4624 {
4625 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr;
4626
4627 cis->delay = sc->ciss_cfg->interrupt_coalesce_delay;
4628 cis->count = sc->ciss_cfg->interrupt_coalesce_count;
4629
4630 break;
4631 }
4632
4633 case CCISS_SETINTINFO:
4634 {
4635 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr;
4636
4637 if ((cis->delay == 0) && (cis->count == 0)) {
4638 error = EINVAL;
4639 break;
4640 }
4641
4642 /*
4643 * XXX apparently this is only safe if the controller is idle,
4644 * we should suspend it before doing this.
4645 */
4646 sc->ciss_cfg->interrupt_coalesce_delay = cis->delay;
4647 sc->ciss_cfg->interrupt_coalesce_count = cis->count;
4648
4649 if (ciss_update_config(sc))
4650 error = EIO;
4651
4652 /* XXX resume the controller here */
4653 break;
4654 }
4655
4656 case CCISS_GETNODENAME:
4657 bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr,
4658 sizeof(NodeName_type));
4659 break;
4660
4661 case CCISS_SETNODENAME:
4662 bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name,
4663 sizeof(NodeName_type));
4664 if (ciss_update_config(sc))
4665 error = EIO;
4666 break;
4667
4668 case CCISS_GETHEARTBEAT:
4669 *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat;
4670 break;
4671
4672 case CCISS_GETBUSTYPES:
4673 *(BusTypes_type *)addr = sc->ciss_cfg->bus_types;
4674 break;
4675
4676 case CCISS_GETFIRMVER:
4677 bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr,
4678 sizeof(FirmwareVer_type));
4679 break;
4680
4681 case CCISS_GETDRIVERVER:
4682 *(DriverVer_type *)addr = CISS_DRIVER_VERSION;
4683 break;
4684
4685 case CCISS_REVALIDVOLS:
4686 /*
4687 * This is a bit ugly; to do it "right" we really need
4688 * to find any disks that have changed, kick CAM off them,
4689 * then rescan only these disks. It'd be nice if they
4690 * a) told us which disk(s) they were going to play with,
4691 * and b) which ones had arrived. 8(
4692 */
4693 break;
4694
4695 #ifdef __amd64__
4696 case CCISS_PASSTHRU32:
4697 ioc_swab.LUN_info = ioc32->LUN_info;
4698 ioc_swab.Request = ioc32->Request;
4699 ioc_swab.error_info = ioc32->error_info;
4700 ioc_swab.buf_size = ioc32->buf_size;
4701 ioc_swab.buf = (u_int8_t *)(uintptr_t)ioc32->buf;
4702 ioc = &ioc_swab;
4703 /* FALLTHROUGH */
4704 #endif
4705
4706 case CCISS_PASSTHRU:
4707 error = ciss_user_command(sc, ioc);
4708 break;
4709
4710 default:
4711 debug(0, "unknown ioctl 0x%lx", cmd);
4712
4713 debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO);
4714 debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO);
4715 debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO);
4716 debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME);
4717 debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME);
4718 debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT);
4719 debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES);
4720 debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER);
4721 debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER);
4722 debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS);
4723 debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU);
4724
4725 error = ENOIOCTL;
4726 break;
4727 }
4728
4729 mtx_unlock(&sc->ciss_mtx);
4730 return(error);
4731 }
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