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 * $FreeBSD$
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 TBD" },
349 { 0x103C, 0x21BE, CISS_BOARD_SA5, "HP Smart Array TBD" },
350 { 0x103C, 0x21BF, CISS_BOARD_SA5, "HP Smart Array TBD" },
351 { 0x103C, 0x21C0, CISS_BOARD_SA5, "HP Smart Array TBD" },
352 { 0x103C, 0x21C2, CISS_BOARD_SA5, "HP Smart Array TBD" },
353 { 0x103C, 0x21C3, CISS_BOARD_SA5, "HP Smart Array TBD" },
354 { 0x103C, 0x21C5, CISS_BOARD_SA5, "HP Smart Array TBD" },
355 { 0x103C, 0x21C6, CISS_BOARD_SA5, "HP Smart Array TBD" },
356 { 0x103C, 0x21C7, CISS_BOARD_SA5, "HP Smart Array TBD" },
357 { 0x103C, 0x21C8, CISS_BOARD_SA5, "HP Smart Array TBD" },
358 { 0x103C, 0x21CA, CISS_BOARD_SA5, "HP Smart Array TBD" },
359 { 0x103C, 0x21CB, CISS_BOARD_SA5, "HP Smart Array TBD" },
360 { 0x103C, 0x21CC, CISS_BOARD_SA5, "HP Smart Array TBD" },
361 { 0x103C, 0x21CD, CISS_BOARD_SA5, "HP Smart Array TBD" },
362 { 0x103C, 0x21CE, CISS_BOARD_SA5, "HP Smart Array TBD" },
363 { 0, 0, 0, NULL }
364 };
365
366 /************************************************************************
367 * Find a match for the device in our list of known adapters.
368 */
369 static int
370 ciss_lookup(device_t dev)
371 {
372 int i;
373
374 for (i = 0; ciss_vendor_data[i].desc != NULL; i++)
375 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) &&
376 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) {
377 return(i);
378 }
379 return(-1);
380 }
381
382 /************************************************************************
383 * Match a known CISS adapter.
384 */
385 static int
386 ciss_probe(device_t dev)
387 {
388 int i;
389
390 i = ciss_lookup(dev);
391 if (i != -1) {
392 device_set_desc(dev, ciss_vendor_data[i].desc);
393 return(BUS_PROBE_DEFAULT);
394 }
395 return(ENOENT);
396 }
397
398 /************************************************************************
399 * Attach the driver to this adapter.
400 */
401 static int
402 ciss_attach(device_t dev)
403 {
404 struct ciss_softc *sc;
405 int error;
406
407 debug_called(1);
408
409 #ifdef CISS_DEBUG
410 /* print structure/union sizes */
411 debug_struct(ciss_command);
412 debug_struct(ciss_header);
413 debug_union(ciss_device_address);
414 debug_struct(ciss_cdb);
415 debug_struct(ciss_report_cdb);
416 debug_struct(ciss_notify_cdb);
417 debug_struct(ciss_notify);
418 debug_struct(ciss_message_cdb);
419 debug_struct(ciss_error_info_pointer);
420 debug_struct(ciss_error_info);
421 debug_struct(ciss_sg_entry);
422 debug_struct(ciss_config_table);
423 debug_struct(ciss_bmic_cdb);
424 debug_struct(ciss_bmic_id_ldrive);
425 debug_struct(ciss_bmic_id_lstatus);
426 debug_struct(ciss_bmic_id_table);
427 debug_struct(ciss_bmic_id_pdrive);
428 debug_struct(ciss_bmic_blink_pdrive);
429 debug_struct(ciss_bmic_flush_cache);
430 debug_const(CISS_MAX_REQUESTS);
431 debug_const(CISS_MAX_LOGICAL);
432 debug_const(CISS_INTERRUPT_COALESCE_DELAY);
433 debug_const(CISS_INTERRUPT_COALESCE_COUNT);
434 debug_const(CISS_COMMAND_ALLOC_SIZE);
435 debug_const(CISS_COMMAND_SG_LENGTH);
436
437 debug_type(cciss_pci_info_struct);
438 debug_type(cciss_coalint_struct);
439 debug_type(cciss_coalint_struct);
440 debug_type(NodeName_type);
441 debug_type(NodeName_type);
442 debug_type(Heartbeat_type);
443 debug_type(BusTypes_type);
444 debug_type(FirmwareVer_type);
445 debug_type(DriverVer_type);
446 debug_type(IOCTL_Command_struct);
447 #endif
448
449 sc = device_get_softc(dev);
450 sc->ciss_dev = dev;
451 mtx_init(&sc->ciss_mtx, "cissmtx", NULL, MTX_DEF);
452 callout_init_mtx(&sc->ciss_periodic, &sc->ciss_mtx, 0);
453
454 /*
455 * Do PCI-specific init.
456 */
457 if ((error = ciss_init_pci(sc)) != 0)
458 goto out;
459
460 /*
461 * Initialise driver queues.
462 */
463 ciss_initq_free(sc);
464 ciss_initq_notify(sc);
465
466 /*
467 * Initalize device sysctls.
468 */
469 ciss_init_sysctl(sc);
470
471 /*
472 * Initialise command/request pool.
473 */
474 if ((error = ciss_init_requests(sc)) != 0)
475 goto out;
476
477 /*
478 * Get adapter information.
479 */
480 if ((error = ciss_identify_adapter(sc)) != 0)
481 goto out;
482
483 /*
484 * Find all the physical devices.
485 */
486 if ((error = ciss_init_physical(sc)) != 0)
487 goto out;
488
489 /*
490 * Build our private table of logical devices.
491 */
492 if ((error = ciss_init_logical(sc)) != 0)
493 goto out;
494
495 /*
496 * Enable interrupts so that the CAM scan can complete.
497 */
498 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc);
499
500 /*
501 * Initialise the CAM interface.
502 */
503 if ((error = ciss_cam_init(sc)) != 0)
504 goto out;
505
506 /*
507 * Start the heartbeat routine and event chain.
508 */
509 ciss_periodic(sc);
510
511 /*
512 * Create the control device.
513 */
514 sc->ciss_dev_t = make_dev(&ciss_cdevsw, device_get_unit(sc->ciss_dev),
515 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
516 "ciss%d", device_get_unit(sc->ciss_dev));
517 sc->ciss_dev_t->si_drv1 = sc;
518
519 /*
520 * The adapter is running; synchronous commands can now sleep
521 * waiting for an interrupt to signal completion.
522 */
523 sc->ciss_flags |= CISS_FLAG_RUNNING;
524
525 ciss_spawn_notify_thread(sc);
526
527 error = 0;
528 out:
529 if (error != 0) {
530 /* ciss_free() expects the mutex to be held */
531 mtx_lock(&sc->ciss_mtx);
532 ciss_free(sc);
533 }
534 return(error);
535 }
536
537 /************************************************************************
538 * Detach the driver from this adapter.
539 */
540 static int
541 ciss_detach(device_t dev)
542 {
543 struct ciss_softc *sc = device_get_softc(dev);
544
545 debug_called(1);
546
547 mtx_lock(&sc->ciss_mtx);
548 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN) {
549 mtx_unlock(&sc->ciss_mtx);
550 return (EBUSY);
551 }
552
553 /* flush adapter cache */
554 ciss_flush_adapter(sc);
555
556 /* release all resources. The mutex is released and freed here too. */
557 ciss_free(sc);
558
559 return(0);
560 }
561
562 /************************************************************************
563 * Prepare adapter for system shutdown.
564 */
565 static int
566 ciss_shutdown(device_t dev)
567 {
568 struct ciss_softc *sc = device_get_softc(dev);
569
570 debug_called(1);
571
572 mtx_lock(&sc->ciss_mtx);
573 /* flush adapter cache */
574 ciss_flush_adapter(sc);
575
576 if (sc->ciss_soft_reset)
577 ciss_soft_reset(sc);
578 mtx_unlock(&sc->ciss_mtx);
579
580 return(0);
581 }
582
583 static void
584 ciss_init_sysctl(struct ciss_softc *sc)
585 {
586
587 SYSCTL_ADD_INT(device_get_sysctl_ctx(sc->ciss_dev),
588 SYSCTL_CHILDREN(device_get_sysctl_tree(sc->ciss_dev)),
589 OID_AUTO, "soft_reset", CTLFLAG_RW, &sc->ciss_soft_reset, 0, "");
590 }
591
592 /************************************************************************
593 * Perform PCI-specific attachment actions.
594 */
595 static int
596 ciss_init_pci(struct ciss_softc *sc)
597 {
598 uintptr_t cbase, csize, cofs;
599 uint32_t method, supported_methods;
600 int error, sqmask, i;
601 void *intr;
602
603 debug_called(1);
604
605 /*
606 * Work out adapter type.
607 */
608 i = ciss_lookup(sc->ciss_dev);
609 if (i < 0) {
610 ciss_printf(sc, "unknown adapter type\n");
611 return (ENXIO);
612 }
613
614 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) {
615 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5;
616 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) {
617 sqmask = CISS_TL_SIMPLE_INTR_OPQ_SA5B;
618 } else {
619 /*
620 * XXX Big hammer, masks/unmasks all possible interrupts. This should
621 * work on all hardware variants. Need to add code to handle the
622 * "controller crashed" interupt bit that this unmasks.
623 */
624 sqmask = ~0;
625 }
626
627 /*
628 * Allocate register window first (we need this to find the config
629 * struct).
630 */
631 error = ENXIO;
632 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS;
633 if ((sc->ciss_regs_resource =
634 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
635 &sc->ciss_regs_rid, RF_ACTIVE)) == NULL) {
636 ciss_printf(sc, "can't allocate register window\n");
637 return(ENXIO);
638 }
639 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource);
640 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource);
641
642 /*
643 * Find the BAR holding the config structure. If it's not the one
644 * we already mapped for registers, map it too.
645 */
646 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff;
647 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) {
648 if ((sc->ciss_cfg_resource =
649 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_MEMORY,
650 &sc->ciss_cfg_rid, RF_ACTIVE)) == NULL) {
651 ciss_printf(sc, "can't allocate config window\n");
652 return(ENXIO);
653 }
654 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource);
655 csize = rman_get_end(sc->ciss_cfg_resource) -
656 rman_get_start(sc->ciss_cfg_resource) + 1;
657 } else {
658 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource);
659 csize = rman_get_end(sc->ciss_regs_resource) -
660 rman_get_start(sc->ciss_regs_resource) + 1;
661 }
662 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF);
663
664 /*
665 * Use the base/size/offset values we just calculated to
666 * sanity-check the config structure. If it's OK, point to it.
667 */
668 if ((cofs + sizeof(struct ciss_config_table)) > csize) {
669 ciss_printf(sc, "config table outside window\n");
670 return(ENXIO);
671 }
672 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs);
673 debug(1, "config struct at %p", sc->ciss_cfg);
674
675 /*
676 * Calculate the number of request structures/commands we are
677 * going to provide for this adapter.
678 */
679 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands);
680
681 /*
682 * Validate the config structure. If we supported other transport
683 * methods, we could select amongst them at this point in time.
684 */
685 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) {
686 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n",
687 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1],
688 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]);
689 return(ENXIO);
690 }
691
692 /*
693 * Select the mode of operation, prefer Performant.
694 */
695 if (!(sc->ciss_cfg->supported_methods &
696 (CISS_TRANSPORT_METHOD_SIMPLE | CISS_TRANSPORT_METHOD_PERF))) {
697 ciss_printf(sc, "No supported transport layers: 0x%x\n",
698 sc->ciss_cfg->supported_methods);
699 }
700
701 switch (ciss_force_transport) {
702 case 1:
703 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
704 break;
705 case 2:
706 supported_methods = CISS_TRANSPORT_METHOD_PERF;
707 break;
708 default:
709 /*
710 * Override the capabilities of the BOARD and specify SIMPLE
711 * MODE
712 */
713 if (ciss_vendor_data[i].flags & CISS_BOARD_SIMPLE)
714 supported_methods = CISS_TRANSPORT_METHOD_SIMPLE;
715 else
716 supported_methods = sc->ciss_cfg->supported_methods;
717 break;
718 }
719
720 setup:
721 if ((supported_methods & CISS_TRANSPORT_METHOD_PERF) != 0) {
722 method = CISS_TRANSPORT_METHOD_PERF;
723 sc->ciss_perf = (struct ciss_perf_config *)(cbase + cofs +
724 sc->ciss_cfg->transport_offset);
725 if (ciss_init_perf(sc)) {
726 supported_methods &= ~method;
727 goto setup;
728 }
729 } else if (supported_methods & CISS_TRANSPORT_METHOD_SIMPLE) {
730 method = CISS_TRANSPORT_METHOD_SIMPLE;
731 } else {
732 ciss_printf(sc, "No supported transport methods: 0x%x\n",
733 sc->ciss_cfg->supported_methods);
734 return(ENXIO);
735 }
736
737 /*
738 * Tell it we're using the low 4GB of RAM. Set the default interrupt
739 * coalescing options.
740 */
741 sc->ciss_cfg->requested_method = method;
742 sc->ciss_cfg->command_physlimit = 0;
743 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY;
744 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT;
745
746 #ifdef __i386__
747 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH;
748 #endif
749
750 if (ciss_update_config(sc)) {
751 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n",
752 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR));
753 return(ENXIO);
754 }
755 if ((sc->ciss_cfg->active_method & method) == 0) {
756 supported_methods &= ~method;
757 if (supported_methods == 0) {
758 ciss_printf(sc, "adapter refuses to go into available transports "
759 "mode (0x%x, 0x%x)\n", supported_methods,
760 sc->ciss_cfg->active_method);
761 return(ENXIO);
762 } else
763 goto setup;
764 }
765
766 /*
767 * Wait for the adapter to come ready.
768 */
769 if ((error = ciss_wait_adapter(sc)) != 0)
770 return(error);
771
772 /* Prepare to possibly use MSIX and/or PERFORMANT interrupts. Normal
773 * interrupts have a rid of 0, this will be overridden if MSIX is used.
774 */
775 sc->ciss_irq_rid[0] = 0;
776 if (method == CISS_TRANSPORT_METHOD_PERF) {
777 ciss_printf(sc, "PERFORMANT Transport\n");
778 if ((ciss_force_interrupt != 1) && (ciss_setup_msix(sc) == 0)) {
779 intr = ciss_perf_msi_intr;
780 } else {
781 intr = ciss_perf_intr;
782 }
783 /* XXX The docs say that the 0x01 bit is only for SAS controllers.
784 * Unfortunately, there is no good way to know if this is a SAS
785 * controller. Hopefully enabling this bit universally will work OK.
786 * It seems to work fine for SA6i controllers.
787 */
788 sc->ciss_interrupt_mask = CISS_TL_PERF_INTR_OPQ | CISS_TL_PERF_INTR_MSI;
789
790 } else {
791 ciss_printf(sc, "SIMPLE Transport\n");
792 /* MSIX doesn't seem to work in SIMPLE mode, only enable if it forced */
793 if (ciss_force_interrupt == 2)
794 /* If this fails, we automatically revert to INTx */
795 ciss_setup_msix(sc);
796 sc->ciss_perf = NULL;
797 intr = ciss_intr;
798 sc->ciss_interrupt_mask = sqmask;
799 }
800
801 /*
802 * Turn off interrupts before we go routing anything.
803 */
804 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
805
806 /*
807 * Allocate and set up our interrupt.
808 */
809 if ((sc->ciss_irq_resource =
810 bus_alloc_resource_any(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid[0],
811 RF_ACTIVE | RF_SHAREABLE)) == NULL) {
812 ciss_printf(sc, "can't allocate interrupt\n");
813 return(ENXIO);
814 }
815
816 if (bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource,
817 INTR_TYPE_CAM|INTR_MPSAFE, NULL, intr, sc,
818 &sc->ciss_intr)) {
819 ciss_printf(sc, "can't set up interrupt\n");
820 return(ENXIO);
821 }
822
823 /*
824 * Allocate the parent bus DMA tag appropriate for our PCI
825 * interface.
826 *
827 * Note that "simple" adapters can only address within a 32-bit
828 * span.
829 */
830 if (bus_dma_tag_create(bus_get_dma_tag(sc->ciss_dev),/* PCI parent */
831 1, 0, /* alignment, boundary */
832 BUS_SPACE_MAXADDR, /* lowaddr */
833 BUS_SPACE_MAXADDR, /* highaddr */
834 NULL, NULL, /* filter, filterarg */
835 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
836 BUS_SPACE_UNRESTRICTED, /* nsegments */
837 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
838 0, /* flags */
839 NULL, NULL, /* lockfunc, lockarg */
840 &sc->ciss_parent_dmat)) {
841 ciss_printf(sc, "can't allocate parent DMA tag\n");
842 return(ENOMEM);
843 }
844
845 /*
846 * Create DMA tag for mapping buffers into adapter-addressable
847 * space.
848 */
849 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
850 1, 0, /* alignment, boundary */
851 BUS_SPACE_MAXADDR, /* lowaddr */
852 BUS_SPACE_MAXADDR, /* highaddr */
853 NULL, NULL, /* filter, filterarg */
854 (CISS_MAX_SG_ELEMENTS - 1) * PAGE_SIZE, /* maxsize */
855 CISS_MAX_SG_ELEMENTS, /* nsegments */
856 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
857 BUS_DMA_ALLOCNOW, /* flags */
858 busdma_lock_mutex, &sc->ciss_mtx, /* lockfunc, lockarg */
859 &sc->ciss_buffer_dmat)) {
860 ciss_printf(sc, "can't allocate buffer DMA tag\n");
861 return(ENOMEM);
862 }
863 return(0);
864 }
865
866 /************************************************************************
867 * Setup MSI/MSIX operation (Performant only)
868 * Four interrupts are available, but we only use 1 right now. If MSI-X
869 * isn't avaialble, try using MSI instead.
870 */
871 static int
872 ciss_setup_msix(struct ciss_softc *sc)
873 {
874 int val, i;
875
876 /* Weed out devices that don't actually support MSI */
877 i = ciss_lookup(sc->ciss_dev);
878 if (ciss_vendor_data[i].flags & CISS_BOARD_NOMSI)
879 return (EINVAL);
880
881 /*
882 * Only need to use the minimum number of MSI vectors, as the driver
883 * doesn't support directed MSIX interrupts.
884 */
885 val = pci_msix_count(sc->ciss_dev);
886 if (val < CISS_MSI_COUNT) {
887 val = pci_msi_count(sc->ciss_dev);
888 device_printf(sc->ciss_dev, "got %d MSI messages]\n", val);
889 if (val < CISS_MSI_COUNT)
890 return (EINVAL);
891 }
892 val = MIN(val, CISS_MSI_COUNT);
893 if (pci_alloc_msix(sc->ciss_dev, &val) != 0) {
894 if (pci_alloc_msi(sc->ciss_dev, &val) != 0)
895 return (EINVAL);
896 }
897
898 sc->ciss_msi = val;
899 if (bootverbose)
900 ciss_printf(sc, "Using %d MSIX interrupt%s\n", val,
901 (val != 1) ? "s" : "");
902
903 for (i = 0; i < val; i++)
904 sc->ciss_irq_rid[i] = i + 1;
905
906 return (0);
907
908 }
909
910 /************************************************************************
911 * Setup the Performant structures.
912 */
913 static int
914 ciss_init_perf(struct ciss_softc *sc)
915 {
916 struct ciss_perf_config *pc = sc->ciss_perf;
917 int reply_size;
918
919 /*
920 * Create the DMA tag for the reply queue.
921 */
922 reply_size = sizeof(uint64_t) * sc->ciss_max_requests;
923 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
924 1, 0, /* alignment, boundary */
925 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
926 BUS_SPACE_MAXADDR, /* highaddr */
927 NULL, NULL, /* filter, filterarg */
928 reply_size, 1, /* maxsize, nsegments */
929 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
930 0, /* flags */
931 NULL, NULL, /* lockfunc, lockarg */
932 &sc->ciss_reply_dmat)) {
933 ciss_printf(sc, "can't allocate reply DMA tag\n");
934 return(ENOMEM);
935 }
936 /*
937 * Allocate memory and make it available for DMA.
938 */
939 if (bus_dmamem_alloc(sc->ciss_reply_dmat, (void **)&sc->ciss_reply,
940 BUS_DMA_NOWAIT, &sc->ciss_reply_map)) {
941 ciss_printf(sc, "can't allocate reply memory\n");
942 return(ENOMEM);
943 }
944 bus_dmamap_load(sc->ciss_reply_dmat, sc->ciss_reply_map, sc->ciss_reply,
945 reply_size, ciss_command_map_helper, &sc->ciss_reply_phys, 0);
946 bzero(sc->ciss_reply, reply_size);
947
948 sc->ciss_cycle = 0x1;
949 sc->ciss_rqidx = 0;
950
951 /*
952 * Preload the fetch table with common command sizes. This allows the
953 * hardware to not waste bus cycles for typical i/o commands, but also not
954 * tax the driver to be too exact in choosing sizes. The table is optimized
955 * for page-aligned i/o's, but since most i/o comes from the various pagers,
956 * it's a reasonable assumption to make.
957 */
958 pc->fetch_count[CISS_SG_FETCH_NONE] = (sizeof(struct ciss_command) + 15) / 16;
959 pc->fetch_count[CISS_SG_FETCH_1] =
960 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 1 + 15) / 16;
961 pc->fetch_count[CISS_SG_FETCH_2] =
962 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 2 + 15) / 16;
963 pc->fetch_count[CISS_SG_FETCH_4] =
964 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 4 + 15) / 16;
965 pc->fetch_count[CISS_SG_FETCH_8] =
966 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 8 + 15) / 16;
967 pc->fetch_count[CISS_SG_FETCH_16] =
968 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 16 + 15) / 16;
969 pc->fetch_count[CISS_SG_FETCH_32] =
970 (sizeof(struct ciss_command) + sizeof(struct ciss_sg_entry) * 32 + 15) / 16;
971 pc->fetch_count[CISS_SG_FETCH_MAX] = (CISS_COMMAND_ALLOC_SIZE + 15) / 16;
972
973 pc->rq_size = sc->ciss_max_requests; /* XXX less than the card supports? */
974 pc->rq_count = 1; /* XXX Hardcode for a single queue */
975 pc->rq_bank_hi = 0;
976 pc->rq_bank_lo = 0;
977 pc->rq[0].rq_addr_hi = 0x0;
978 pc->rq[0].rq_addr_lo = sc->ciss_reply_phys;
979
980 return(0);
981 }
982
983 /************************************************************************
984 * Wait for the adapter to come ready.
985 */
986 static int
987 ciss_wait_adapter(struct ciss_softc *sc)
988 {
989 int i;
990
991 debug_called(1);
992
993 /*
994 * Wait for the adapter to come ready.
995 */
996 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) {
997 ciss_printf(sc, "waiting for adapter to come ready...\n");
998 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) {
999 DELAY(1000000); /* one second */
1000 if (i > 30) {
1001 ciss_printf(sc, "timed out waiting for adapter to come ready\n");
1002 return(EIO);
1003 }
1004 }
1005 }
1006 return(0);
1007 }
1008
1009 /************************************************************************
1010 * Flush the adapter cache.
1011 */
1012 static int
1013 ciss_flush_adapter(struct ciss_softc *sc)
1014 {
1015 struct ciss_request *cr;
1016 struct ciss_bmic_flush_cache *cbfc;
1017 int error, command_status;
1018
1019 debug_called(1);
1020
1021 cr = NULL;
1022 cbfc = NULL;
1023
1024 /*
1025 * Build a BMIC request to flush the cache. We don't disable
1026 * it, as we may be going to do more I/O (eg. we are emulating
1027 * the Synchronise Cache command).
1028 */
1029 if ((cbfc = malloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
1030 error = ENOMEM;
1031 goto out;
1032 }
1033 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE,
1034 (void **)&cbfc, sizeof(*cbfc))) != 0)
1035 goto out;
1036
1037 /*
1038 * Submit the request and wait for it to complete.
1039 */
1040 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1041 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error);
1042 goto out;
1043 }
1044
1045 /*
1046 * Check response.
1047 */
1048 ciss_report_request(cr, &command_status, NULL);
1049 switch(command_status) {
1050 case CISS_CMD_STATUS_SUCCESS:
1051 break;
1052 default:
1053 ciss_printf(sc, "error flushing cache (%s)\n",
1054 ciss_name_command_status(command_status));
1055 error = EIO;
1056 goto out;
1057 }
1058
1059 out:
1060 if (cbfc != NULL)
1061 free(cbfc, CISS_MALLOC_CLASS);
1062 if (cr != NULL)
1063 ciss_release_request(cr);
1064 return(error);
1065 }
1066
1067 static void
1068 ciss_soft_reset(struct ciss_softc *sc)
1069 {
1070 struct ciss_request *cr = NULL;
1071 struct ciss_command *cc;
1072 int i, error = 0;
1073
1074 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1075 /* only reset proxy controllers */
1076 if (sc->ciss_controllers[i].physical.bus == 0)
1077 continue;
1078
1079 if ((error = ciss_get_request(sc, &cr)) != 0)
1080 break;
1081
1082 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_SOFT_RESET,
1083 NULL, 0)) != 0)
1084 break;
1085
1086 cc = cr->cr_cc;
1087 cc->header.address = sc->ciss_controllers[i];
1088
1089 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0)
1090 break;
1091
1092 ciss_release_request(cr);
1093 }
1094
1095 if (error)
1096 ciss_printf(sc, "error resetting controller (%d)\n", error);
1097
1098 if (cr != NULL)
1099 ciss_release_request(cr);
1100 }
1101
1102 /************************************************************************
1103 * Allocate memory for the adapter command structures, initialise
1104 * the request structures.
1105 *
1106 * Note that the entire set of commands are allocated in a single
1107 * contiguous slab.
1108 */
1109 static int
1110 ciss_init_requests(struct ciss_softc *sc)
1111 {
1112 struct ciss_request *cr;
1113 int i;
1114
1115 debug_called(1);
1116
1117 if (bootverbose)
1118 ciss_printf(sc, "using %d of %d available commands\n",
1119 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands);
1120
1121 /*
1122 * Create the DMA tag for commands.
1123 */
1124 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
1125 32, 0, /* alignment, boundary */
1126 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1127 BUS_SPACE_MAXADDR, /* highaddr */
1128 NULL, NULL, /* filter, filterarg */
1129 CISS_COMMAND_ALLOC_SIZE *
1130 sc->ciss_max_requests, 1, /* maxsize, nsegments */
1131 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1132 0, /* flags */
1133 NULL, NULL, /* lockfunc, lockarg */
1134 &sc->ciss_command_dmat)) {
1135 ciss_printf(sc, "can't allocate command DMA tag\n");
1136 return(ENOMEM);
1137 }
1138 /*
1139 * Allocate memory and make it available for DMA.
1140 */
1141 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command,
1142 BUS_DMA_NOWAIT, &sc->ciss_command_map)) {
1143 ciss_printf(sc, "can't allocate command memory\n");
1144 return(ENOMEM);
1145 }
1146 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map,sc->ciss_command,
1147 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests,
1148 ciss_command_map_helper, &sc->ciss_command_phys, 0);
1149 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests);
1150
1151 /*
1152 * Set up the request and command structures, push requests onto
1153 * the free queue.
1154 */
1155 for (i = 1; i < sc->ciss_max_requests; i++) {
1156 cr = &sc->ciss_request[i];
1157 cr->cr_sc = sc;
1158 cr->cr_tag = i;
1159 cr->cr_cc = (struct ciss_command *)((uintptr_t)sc->ciss_command +
1160 CISS_COMMAND_ALLOC_SIZE * i);
1161 cr->cr_ccphys = sc->ciss_command_phys + CISS_COMMAND_ALLOC_SIZE * i;
1162 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap);
1163 ciss_enqueue_free(cr);
1164 }
1165 return(0);
1166 }
1167
1168 static void
1169 ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
1170 {
1171 uint32_t *addr;
1172
1173 addr = arg;
1174 *addr = segs[0].ds_addr;
1175 }
1176
1177 /************************************************************************
1178 * Identify the adapter, print some information about it.
1179 */
1180 static int
1181 ciss_identify_adapter(struct ciss_softc *sc)
1182 {
1183 struct ciss_request *cr;
1184 int error, command_status;
1185
1186 debug_called(1);
1187
1188 cr = NULL;
1189
1190 /*
1191 * Get a request, allocate storage for the adapter data.
1192 */
1193 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR,
1194 (void **)&sc->ciss_id,
1195 sizeof(*sc->ciss_id))) != 0)
1196 goto out;
1197
1198 /*
1199 * Submit the request and wait for it to complete.
1200 */
1201 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1202 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error);
1203 goto out;
1204 }
1205
1206 /*
1207 * Check response.
1208 */
1209 ciss_report_request(cr, &command_status, NULL);
1210 switch(command_status) {
1211 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1212 break;
1213 case CISS_CMD_STATUS_DATA_UNDERRUN:
1214 case CISS_CMD_STATUS_DATA_OVERRUN:
1215 ciss_printf(sc, "data over/underrun reading adapter information\n");
1216 default:
1217 ciss_printf(sc, "error reading adapter information (%s)\n",
1218 ciss_name_command_status(command_status));
1219 error = EIO;
1220 goto out;
1221 }
1222
1223 /* sanity-check reply */
1224 if (!sc->ciss_id->big_map_supported) {
1225 ciss_printf(sc, "adapter does not support BIG_MAP\n");
1226 error = ENXIO;
1227 goto out;
1228 }
1229
1230 #if 0
1231 /* XXX later revisions may not need this */
1232 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH;
1233 #endif
1234
1235 /* XXX only really required for old 5300 adapters? */
1236 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT;
1237
1238 /*
1239 * Earlier controller specs do not contain these config
1240 * entries, so assume that a 0 means its old and assign
1241 * these values to the defaults that were established
1242 * when this driver was developed for them
1243 */
1244 if (sc->ciss_cfg->max_logical_supported == 0)
1245 sc->ciss_cfg->max_logical_supported = CISS_MAX_LOGICAL;
1246 if (sc->ciss_cfg->max_physical_supported == 0)
1247 sc->ciss_cfg->max_physical_supported = CISS_MAX_PHYSICAL;
1248 /* print information */
1249 if (bootverbose) {
1250 ciss_printf(sc, " %d logical drive%s configured\n",
1251 sc->ciss_id->configured_logical_drives,
1252 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s");
1253 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision);
1254 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count);
1255
1256 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature);
1257 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence);
1258 ciss_printf(sc, " supported I/O methods 0x%b\n",
1259 sc->ciss_cfg->supported_methods,
1260 "\2\1READY\2simple\3performant\4MEMQ\n");
1261 ciss_printf(sc, " active I/O method 0x%b\n",
1262 sc->ciss_cfg->active_method, "\2\2simple\3performant\4MEMQ\n");
1263 ciss_printf(sc, " 4G page base 0x%08x\n",
1264 sc->ciss_cfg->command_physlimit);
1265 ciss_printf(sc, " interrupt coalesce delay %dus\n",
1266 sc->ciss_cfg->interrupt_coalesce_delay);
1267 ciss_printf(sc, " interrupt coalesce count %d\n",
1268 sc->ciss_cfg->interrupt_coalesce_count);
1269 ciss_printf(sc, " max outstanding commands %d\n",
1270 sc->ciss_cfg->max_outstanding_commands);
1271 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types,
1272 "\2\1ultra2\2ultra3\10fibre1\11fibre2\n");
1273 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name);
1274 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat);
1275 ciss_printf(sc, " max logical logical volumes: %d\n", sc->ciss_cfg->max_logical_supported);
1276 ciss_printf(sc, " max physical disks supported: %d\n", sc->ciss_cfg->max_physical_supported);
1277 ciss_printf(sc, " max physical disks per logical volume: %d\n", sc->ciss_cfg->max_physical_per_logical);
1278 }
1279
1280 out:
1281 if (error) {
1282 if (sc->ciss_id != NULL) {
1283 free(sc->ciss_id, CISS_MALLOC_CLASS);
1284 sc->ciss_id = NULL;
1285 }
1286 }
1287 if (cr != NULL)
1288 ciss_release_request(cr);
1289 return(error);
1290 }
1291
1292 /************************************************************************
1293 * Helper routine for generating a list of logical and physical luns.
1294 */
1295 static struct ciss_lun_report *
1296 ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits)
1297 {
1298 struct ciss_request *cr;
1299 struct ciss_command *cc;
1300 struct ciss_report_cdb *crc;
1301 struct ciss_lun_report *cll;
1302 int command_status;
1303 int report_size;
1304 int error = 0;
1305
1306 debug_called(1);
1307
1308 cr = NULL;
1309 cll = NULL;
1310
1311 /*
1312 * Get a request, allocate storage for the address list.
1313 */
1314 if ((error = ciss_get_request(sc, &cr)) != 0)
1315 goto out;
1316 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address);
1317 if ((cll = malloc(report_size, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
1318 ciss_printf(sc, "can't allocate memory for lun report\n");
1319 error = ENOMEM;
1320 goto out;
1321 }
1322
1323 /*
1324 * Build the Report Logical/Physical LUNs command.
1325 */
1326 cc = cr->cr_cc;
1327 cr->cr_data = cll;
1328 cr->cr_length = report_size;
1329 cr->cr_flags = CISS_REQ_DATAIN;
1330
1331 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
1332 cc->header.address.physical.bus = 0;
1333 cc->header.address.physical.target = 0;
1334 cc->cdb.cdb_length = sizeof(*crc);
1335 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1336 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1337 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1338 cc->cdb.timeout = 30; /* XXX better suggestions? */
1339
1340 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]);
1341 bzero(crc, sizeof(*crc));
1342 crc->opcode = opcode;
1343 crc->length = htonl(report_size); /* big-endian field */
1344 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */
1345
1346 /*
1347 * Submit the request and wait for it to complete. (timeout
1348 * here should be much greater than above)
1349 */
1350 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1351 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error);
1352 goto out;
1353 }
1354
1355 /*
1356 * Check response. Note that data over/underrun is OK.
1357 */
1358 ciss_report_request(cr, &command_status, NULL);
1359 switch(command_status) {
1360 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1361 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */
1362 break;
1363 case CISS_CMD_STATUS_DATA_OVERRUN:
1364 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n",
1365 sc->ciss_cfg->max_logical_supported);
1366 break;
1367 default:
1368 ciss_printf(sc, "error detecting logical drive configuration (%s)\n",
1369 ciss_name_command_status(command_status));
1370 error = EIO;
1371 goto out;
1372 }
1373 ciss_release_request(cr);
1374 cr = NULL;
1375
1376 out:
1377 if (cr != NULL)
1378 ciss_release_request(cr);
1379 if (error && cll != NULL) {
1380 free(cll, CISS_MALLOC_CLASS);
1381 cll = NULL;
1382 }
1383 return(cll);
1384 }
1385
1386 /************************************************************************
1387 * Find logical drives on the adapter.
1388 */
1389 static int
1390 ciss_init_logical(struct ciss_softc *sc)
1391 {
1392 struct ciss_lun_report *cll;
1393 int error = 0, i, j;
1394 int ndrives;
1395
1396 debug_called(1);
1397
1398 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
1399 sc->ciss_cfg->max_logical_supported);
1400 if (cll == NULL) {
1401 error = ENXIO;
1402 goto out;
1403 }
1404
1405 /* sanity-check reply */
1406 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1407 if ((ndrives < 0) || (ndrives > sc->ciss_cfg->max_logical_supported)) {
1408 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n",
1409 ndrives, sc->ciss_cfg->max_logical_supported);
1410 error = ENXIO;
1411 goto out;
1412 }
1413
1414 /*
1415 * Save logical drive information.
1416 */
1417 if (bootverbose) {
1418 ciss_printf(sc, "%d logical drive%s\n",
1419 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : "");
1420 }
1421
1422 sc->ciss_logical =
1423 malloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *),
1424 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1425 if (sc->ciss_logical == NULL) {
1426 error = ENXIO;
1427 goto out;
1428 }
1429
1430 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
1431 sc->ciss_logical[i] =
1432 malloc(sc->ciss_cfg->max_logical_supported *
1433 sizeof(struct ciss_ldrive),
1434 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1435 if (sc->ciss_logical[i] == NULL) {
1436 error = ENXIO;
1437 goto out;
1438 }
1439
1440 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++)
1441 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT;
1442 }
1443
1444
1445 for (i = 0; i < sc->ciss_cfg->max_logical_supported; i++) {
1446 if (i < ndrives) {
1447 struct ciss_ldrive *ld;
1448 int bus, target;
1449
1450 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
1451 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
1452 ld = &sc->ciss_logical[bus][target];
1453
1454 ld->cl_address = cll->lun[i];
1455 ld->cl_controller = &sc->ciss_controllers[bus];
1456 if (ciss_identify_logical(sc, ld) != 0)
1457 continue;
1458 /*
1459 * If the drive has had media exchanged, we should bring it online.
1460 */
1461 if (ld->cl_lstatus->media_exchanged)
1462 ciss_accept_media(sc, ld);
1463
1464 }
1465 }
1466
1467 out:
1468 if (cll != NULL)
1469 free(cll, CISS_MALLOC_CLASS);
1470 return(error);
1471 }
1472
1473 static int
1474 ciss_init_physical(struct ciss_softc *sc)
1475 {
1476 struct ciss_lun_report *cll;
1477 int error = 0, i;
1478 int nphys;
1479 int bus, target;
1480
1481 debug_called(1);
1482
1483 bus = 0;
1484 target = 0;
1485
1486 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
1487 sc->ciss_cfg->max_physical_supported);
1488 if (cll == NULL) {
1489 error = ENXIO;
1490 goto out;
1491 }
1492
1493 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1494
1495 if (bootverbose) {
1496 ciss_printf(sc, "%d physical device%s\n",
1497 nphys, (nphys > 1 || nphys == 0) ? "s" : "");
1498 }
1499
1500 /*
1501 * Figure out the bus mapping.
1502 * Logical buses include both the local logical bus for local arrays and
1503 * proxy buses for remote arrays. Physical buses are numbered by the
1504 * controller and represent physical buses that hold physical devices.
1505 * We shift these bus numbers so that everything fits into a single flat
1506 * numbering space for CAM. Logical buses occupy the first 32 CAM bus
1507 * numbers, and the physical bus numbers are shifted to be above that.
1508 * This results in the various driver arrays being indexed as follows:
1509 *
1510 * ciss_controllers[] - indexed by logical bus
1511 * ciss_cam_sim[] - indexed by both logical and physical, with physical
1512 * being shifted by 32.
1513 * ciss_logical[][] - indexed by logical bus
1514 * ciss_physical[][] - indexed by physical bus
1515 *
1516 * XXX This is getting more and more hackish. CISS really doesn't play
1517 * well with a standard SCSI model; devices are addressed via magic
1518 * cookies, not via b/t/l addresses. Since there is no way to store
1519 * the cookie in the CAM device object, we have to keep these lookup
1520 * tables handy so that the devices can be found quickly at the cost
1521 * of wasting memory and having a convoluted lookup scheme. This
1522 * driver should probably be converted to block interface.
1523 */
1524 /*
1525 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy
1526 * controller. A proxy controller is another physical controller
1527 * behind the primary PCI controller. We need to know about this
1528 * so that BMIC commands can be properly targeted. There can be
1529 * proxy controllers attached to a single PCI controller, so
1530 * find the highest numbered one so the array can be properly
1531 * sized.
1532 */
1533 sc->ciss_max_logical_bus = 1;
1534 for (i = 0; i < nphys; i++) {
1535 if (cll->lun[i].physical.extra_address == 0) {
1536 bus = cll->lun[i].physical.bus;
1537 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1;
1538 } else {
1539 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address);
1540 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus);
1541 }
1542 }
1543
1544 sc->ciss_controllers =
1545 malloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address),
1546 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1547
1548 if (sc->ciss_controllers == NULL) {
1549 ciss_printf(sc, "Could not allocate memory for controller map\n");
1550 error = ENOMEM;
1551 goto out;
1552 }
1553
1554 /* setup a map of controller addresses */
1555 for (i = 0; i < nphys; i++) {
1556 if (cll->lun[i].physical.extra_address == 0) {
1557 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i];
1558 }
1559 }
1560
1561 sc->ciss_physical =
1562 malloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *),
1563 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1564 if (sc->ciss_physical == NULL) {
1565 ciss_printf(sc, "Could not allocate memory for physical device map\n");
1566 error = ENOMEM;
1567 goto out;
1568 }
1569
1570 for (i = 0; i < sc->ciss_max_physical_bus; i++) {
1571 sc->ciss_physical[i] =
1572 malloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT,
1573 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
1574 if (sc->ciss_physical[i] == NULL) {
1575 ciss_printf(sc, "Could not allocate memory for target map\n");
1576 error = ENOMEM;
1577 goto out;
1578 }
1579 }
1580
1581 ciss_filter_physical(sc, cll);
1582
1583 out:
1584 if (cll != NULL)
1585 free(cll, CISS_MALLOC_CLASS);
1586
1587 return(error);
1588 }
1589
1590 static int
1591 ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll)
1592 {
1593 u_int32_t ea;
1594 int i, nphys;
1595 int bus, target;
1596
1597 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1598 for (i = 0; i < nphys; i++) {
1599 if (cll->lun[i].physical.extra_address == 0)
1600 continue;
1601
1602 /*
1603 * Filter out devices that we don't want. Level 3 LUNs could
1604 * probably be supported, but the docs don't give enough of a
1605 * hint to know how.
1606 *
1607 * The mode field of the physical address is likely set to have
1608 * hard disks masked out. Honor it unless the user has overridden
1609 * us with the tunable. We also munge the inquiry data for these
1610 * disks so that they only show up as passthrough devices. Keeping
1611 * them visible in this fashion is useful for doing things like
1612 * flashing firmware.
1613 */
1614 ea = cll->lun[i].physical.extra_address;
1615 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) ||
1616 (CISS_EXTRA_MODE2(ea) == 0x3))
1617 continue;
1618 if ((ciss_expose_hidden_physical == 0) &&
1619 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL))
1620 continue;
1621
1622 /*
1623 * Note: CISS firmware numbers physical busses starting at '1', not
1624 * ''. This numbering is internal to the firmware and is only
1625 * used as a hint here.
1626 */
1627 bus = CISS_EXTRA_BUS2(ea) - 1;
1628 target = CISS_EXTRA_TARGET2(ea);
1629 sc->ciss_physical[bus][target].cp_address = cll->lun[i];
1630 sc->ciss_physical[bus][target].cp_online = 1;
1631 }
1632
1633 return (0);
1634 }
1635
1636 static int
1637 ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1638 {
1639 struct ciss_request *cr;
1640 struct ciss_command *cc;
1641 struct scsi_inquiry *inq;
1642 int error;
1643 int command_status;
1644
1645 cr = NULL;
1646
1647 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry));
1648
1649 if ((error = ciss_get_request(sc, &cr)) != 0)
1650 goto out;
1651
1652 cc = cr->cr_cc;
1653 cr->cr_data = &ld->cl_geometry;
1654 cr->cr_length = sizeof(ld->cl_geometry);
1655 cr->cr_flags = CISS_REQ_DATAIN;
1656
1657 cc->header.address = ld->cl_address;
1658 cc->cdb.cdb_length = 6;
1659 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1660 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1661 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1662 cc->cdb.timeout = 30;
1663
1664 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]);
1665 inq->opcode = INQUIRY;
1666 inq->byte2 = SI_EVPD;
1667 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY;
1668 scsi_ulto2b(sizeof(ld->cl_geometry), inq->length);
1669
1670 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1671 ciss_printf(sc, "error getting geometry (%d)\n", error);
1672 goto out;
1673 }
1674
1675 ciss_report_request(cr, &command_status, NULL);
1676 switch(command_status) {
1677 case CISS_CMD_STATUS_SUCCESS:
1678 case CISS_CMD_STATUS_DATA_UNDERRUN:
1679 break;
1680 case CISS_CMD_STATUS_DATA_OVERRUN:
1681 ciss_printf(sc, "WARNING: Data overrun\n");
1682 break;
1683 default:
1684 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n",
1685 ciss_name_command_status(command_status));
1686 break;
1687 }
1688
1689 out:
1690 if (cr != NULL)
1691 ciss_release_request(cr);
1692 return(error);
1693 }
1694 /************************************************************************
1695 * Identify a logical drive, initialise state related to it.
1696 */
1697 static int
1698 ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1699 {
1700 struct ciss_request *cr;
1701 struct ciss_command *cc;
1702 struct ciss_bmic_cdb *cbc;
1703 int error, command_status;
1704
1705 debug_called(1);
1706
1707 cr = NULL;
1708
1709 /*
1710 * Build a BMIC request to fetch the drive ID.
1711 */
1712 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE,
1713 (void **)&ld->cl_ldrive,
1714 sizeof(*ld->cl_ldrive))) != 0)
1715 goto out;
1716 cc = cr->cr_cc;
1717 cc->header.address = *ld->cl_controller; /* target controller */
1718 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1719 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1720
1721 /*
1722 * Submit the request and wait for it to complete.
1723 */
1724 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1725 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error);
1726 goto out;
1727 }
1728
1729 /*
1730 * Check response.
1731 */
1732 ciss_report_request(cr, &command_status, NULL);
1733 switch(command_status) {
1734 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1735 break;
1736 case CISS_CMD_STATUS_DATA_UNDERRUN:
1737 case CISS_CMD_STATUS_DATA_OVERRUN:
1738 ciss_printf(sc, "data over/underrun reading logical drive ID\n");
1739 default:
1740 ciss_printf(sc, "error reading logical drive ID (%s)\n",
1741 ciss_name_command_status(command_status));
1742 error = EIO;
1743 goto out;
1744 }
1745 ciss_release_request(cr);
1746 cr = NULL;
1747
1748 /*
1749 * Build a CISS BMIC command to get the logical drive status.
1750 */
1751 if ((error = ciss_get_ldrive_status(sc, ld)) != 0)
1752 goto out;
1753
1754 /*
1755 * Get the logical drive geometry.
1756 */
1757 if ((error = ciss_inquiry_logical(sc, ld)) != 0)
1758 goto out;
1759
1760 /*
1761 * Print the drive's basic characteristics.
1762 */
1763 if (bootverbose) {
1764 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ",
1765 CISS_LUN_TO_BUS(ld->cl_address.logical.lun),
1766 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun),
1767 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance),
1768 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) *
1769 ld->cl_ldrive->block_size));
1770
1771 ciss_print_ldrive(sc, ld);
1772 }
1773 out:
1774 if (error != 0) {
1775 /* make the drive not-exist */
1776 ld->cl_status = CISS_LD_NONEXISTENT;
1777 if (ld->cl_ldrive != NULL) {
1778 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
1779 ld->cl_ldrive = NULL;
1780 }
1781 if (ld->cl_lstatus != NULL) {
1782 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
1783 ld->cl_lstatus = NULL;
1784 }
1785 }
1786 if (cr != NULL)
1787 ciss_release_request(cr);
1788
1789 return(error);
1790 }
1791
1792 /************************************************************************
1793 * Get status for a logical drive.
1794 *
1795 * XXX should we also do this in response to Test Unit Ready?
1796 */
1797 static int
1798 ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld)
1799 {
1800 struct ciss_request *cr;
1801 struct ciss_command *cc;
1802 struct ciss_bmic_cdb *cbc;
1803 int error, command_status;
1804
1805 /*
1806 * Build a CISS BMIC command to get the logical drive status.
1807 */
1808 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS,
1809 (void **)&ld->cl_lstatus,
1810 sizeof(*ld->cl_lstatus))) != 0)
1811 goto out;
1812 cc = cr->cr_cc;
1813 cc->header.address = *ld->cl_controller; /* target controller */
1814 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1815 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1816
1817 /*
1818 * Submit the request and wait for it to complete.
1819 */
1820 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1821 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error);
1822 goto out;
1823 }
1824
1825 /*
1826 * Check response.
1827 */
1828 ciss_report_request(cr, &command_status, NULL);
1829 switch(command_status) {
1830 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1831 break;
1832 case CISS_CMD_STATUS_DATA_UNDERRUN:
1833 case CISS_CMD_STATUS_DATA_OVERRUN:
1834 ciss_printf(sc, "data over/underrun reading logical drive status\n");
1835 default:
1836 ciss_printf(sc, "error reading logical drive status (%s)\n",
1837 ciss_name_command_status(command_status));
1838 error = EIO;
1839 goto out;
1840 }
1841
1842 /*
1843 * Set the drive's summary status based on the returned status.
1844 *
1845 * XXX testing shows that a failed JBOD drive comes back at next
1846 * boot in "queued for expansion" mode. WTF?
1847 */
1848 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status);
1849
1850 out:
1851 if (cr != NULL)
1852 ciss_release_request(cr);
1853 return(error);
1854 }
1855
1856 /************************************************************************
1857 * Notify the adapter of a config update.
1858 */
1859 static int
1860 ciss_update_config(struct ciss_softc *sc)
1861 {
1862 int i;
1863
1864 debug_called(1);
1865
1866 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE);
1867 for (i = 0; i < 1000; i++) {
1868 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) &
1869 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) {
1870 return(0);
1871 }
1872 DELAY(1000);
1873 }
1874 return(1);
1875 }
1876
1877 /************************************************************************
1878 * Accept new media into a logical drive.
1879 *
1880 * XXX The drive has previously been offline; it would be good if we
1881 * could make sure it's not open right now.
1882 */
1883 static int
1884 ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld)
1885 {
1886 struct ciss_request *cr;
1887 struct ciss_command *cc;
1888 struct ciss_bmic_cdb *cbc;
1889 int command_status;
1890 int error = 0, ldrive;
1891
1892 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1893
1894 debug(0, "bringing logical drive %d back online", ldrive);
1895
1896 /*
1897 * Build a CISS BMIC command to bring the drive back online.
1898 */
1899 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA,
1900 NULL, 0)) != 0)
1901 goto out;
1902 cc = cr->cr_cc;
1903 cc->header.address = *ld->cl_controller; /* target controller */
1904 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1905 cbc->log_drive = ldrive;
1906
1907 /*
1908 * Submit the request and wait for it to complete.
1909 */
1910 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1911 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error);
1912 goto out;
1913 }
1914
1915 /*
1916 * Check response.
1917 */
1918 ciss_report_request(cr, &command_status, NULL);
1919 switch(command_status) {
1920 case CISS_CMD_STATUS_SUCCESS: /* all OK */
1921 /* we should get a logical drive status changed event here */
1922 break;
1923 default:
1924 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n",
1925 ciss_name_command_status(command_status));
1926 break;
1927 }
1928
1929 out:
1930 if (cr != NULL)
1931 ciss_release_request(cr);
1932 return(error);
1933 }
1934
1935 /************************************************************************
1936 * Release adapter resources.
1937 */
1938 static void
1939 ciss_free(struct ciss_softc *sc)
1940 {
1941 struct ciss_request *cr;
1942 int i, j;
1943
1944 debug_called(1);
1945
1946 /* we're going away */
1947 sc->ciss_flags |= CISS_FLAG_ABORTING;
1948
1949 /* terminate the periodic heartbeat routine */
1950 callout_stop(&sc->ciss_periodic);
1951
1952 /* cancel the Event Notify chain */
1953 ciss_notify_abort(sc);
1954
1955 ciss_kill_notify_thread(sc);
1956
1957 /* disconnect from CAM */
1958 if (sc->ciss_cam_sim) {
1959 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1960 if (sc->ciss_cam_sim[i]) {
1961 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1962 cam_sim_free(sc->ciss_cam_sim[i], 0);
1963 }
1964 }
1965 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
1966 CISS_PHYSICAL_BASE; i++) {
1967 if (sc->ciss_cam_sim[i]) {
1968 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1969 cam_sim_free(sc->ciss_cam_sim[i], 0);
1970 }
1971 }
1972 free(sc->ciss_cam_sim, CISS_MALLOC_CLASS);
1973 }
1974 if (sc->ciss_cam_devq)
1975 cam_simq_free(sc->ciss_cam_devq);
1976
1977 /* remove the control device */
1978 mtx_unlock(&sc->ciss_mtx);
1979 if (sc->ciss_dev_t != NULL)
1980 destroy_dev(sc->ciss_dev_t);
1981
1982 /* Final cleanup of the callout. */
1983 callout_drain(&sc->ciss_periodic);
1984 mtx_destroy(&sc->ciss_mtx);
1985
1986 /* free the controller data */
1987 if (sc->ciss_id != NULL)
1988 free(sc->ciss_id, CISS_MALLOC_CLASS);
1989
1990 /* release I/O resources */
1991 if (sc->ciss_regs_resource != NULL)
1992 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1993 sc->ciss_regs_rid, sc->ciss_regs_resource);
1994 if (sc->ciss_cfg_resource != NULL)
1995 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1996 sc->ciss_cfg_rid, sc->ciss_cfg_resource);
1997 if (sc->ciss_intr != NULL)
1998 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr);
1999 if (sc->ciss_irq_resource != NULL)
2000 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ,
2001 sc->ciss_irq_rid[0], sc->ciss_irq_resource);
2002 if (sc->ciss_msi)
2003 pci_release_msi(sc->ciss_dev);
2004
2005 while ((cr = ciss_dequeue_free(sc)) != NULL)
2006 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap);
2007 if (sc->ciss_buffer_dmat)
2008 bus_dma_tag_destroy(sc->ciss_buffer_dmat);
2009
2010 /* destroy command memory and DMA tag */
2011 if (sc->ciss_command != NULL) {
2012 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map);
2013 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map);
2014 }
2015 if (sc->ciss_command_dmat)
2016 bus_dma_tag_destroy(sc->ciss_command_dmat);
2017
2018 if (sc->ciss_reply) {
2019 bus_dmamap_unload(sc->ciss_reply_dmat, sc->ciss_reply_map);
2020 bus_dmamem_free(sc->ciss_reply_dmat, sc->ciss_reply, sc->ciss_reply_map);
2021 }
2022 if (sc->ciss_reply_dmat)
2023 bus_dma_tag_destroy(sc->ciss_reply_dmat);
2024
2025 /* destroy DMA tags */
2026 if (sc->ciss_parent_dmat)
2027 bus_dma_tag_destroy(sc->ciss_parent_dmat);
2028 if (sc->ciss_logical) {
2029 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
2030 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
2031 if (sc->ciss_logical[i][j].cl_ldrive)
2032 free(sc->ciss_logical[i][j].cl_ldrive, CISS_MALLOC_CLASS);
2033 if (sc->ciss_logical[i][j].cl_lstatus)
2034 free(sc->ciss_logical[i][j].cl_lstatus, CISS_MALLOC_CLASS);
2035 }
2036 free(sc->ciss_logical[i], CISS_MALLOC_CLASS);
2037 }
2038 free(sc->ciss_logical, CISS_MALLOC_CLASS);
2039 }
2040
2041 if (sc->ciss_physical) {
2042 for (i = 0; i < sc->ciss_max_physical_bus; i++)
2043 free(sc->ciss_physical[i], CISS_MALLOC_CLASS);
2044 free(sc->ciss_physical, CISS_MALLOC_CLASS);
2045 }
2046
2047 if (sc->ciss_controllers)
2048 free(sc->ciss_controllers, CISS_MALLOC_CLASS);
2049
2050 }
2051
2052 /************************************************************************
2053 * Give a command to the adapter.
2054 *
2055 * Note that this uses the simple transport layer directly. If we
2056 * want to add support for other layers, we'll need a switch of some
2057 * sort.
2058 *
2059 * Note that the simple transport layer has no way of refusing a
2060 * command; we only have as many request structures as the adapter
2061 * supports commands, so we don't have to check (this presumes that
2062 * the adapter can handle commands as fast as we throw them at it).
2063 */
2064 static int
2065 ciss_start(struct ciss_request *cr)
2066 {
2067 struct ciss_command *cc; /* XXX debugging only */
2068 int error;
2069
2070 cc = cr->cr_cc;
2071 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag);
2072
2073 /*
2074 * Map the request's data.
2075 */
2076 if ((error = ciss_map_request(cr)))
2077 return(error);
2078
2079 #if 0
2080 ciss_print_request(cr);
2081 #endif
2082
2083 return(0);
2084 }
2085
2086 /************************************************************************
2087 * Fetch completed request(s) from the adapter, queue them for
2088 * completion handling.
2089 *
2090 * Note that this uses the simple transport layer directly. If we
2091 * want to add support for other layers, we'll need a switch of some
2092 * sort.
2093 *
2094 * Note that the simple transport mechanism does not require any
2095 * reentrancy protection; the OPQ read is atomic. If there is a
2096 * chance of a race with something else that might move the request
2097 * off the busy list, then we will have to lock against that
2098 * (eg. timeouts, etc.)
2099 */
2100 static void
2101 ciss_done(struct ciss_softc *sc, cr_qhead_t *qh)
2102 {
2103 struct ciss_request *cr;
2104 struct ciss_command *cc;
2105 u_int32_t tag, index;
2106
2107 debug_called(3);
2108
2109 /*
2110 * Loop quickly taking requests from the adapter and moving them
2111 * to the completed queue.
2112 */
2113 for (;;) {
2114
2115 tag = CISS_TL_SIMPLE_FETCH_CMD(sc);
2116 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY)
2117 break;
2118 index = tag >> 2;
2119 debug(2, "completed command %d%s", index,
2120 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2121 if (index >= sc->ciss_max_requests) {
2122 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2123 continue;
2124 }
2125 cr = &(sc->ciss_request[index]);
2126 cc = cr->cr_cc;
2127 cc->header.host_tag = tag; /* not updated by adapter */
2128 ciss_enqueue_complete(cr, qh);
2129 }
2130
2131 }
2132
2133 static void
2134 ciss_perf_done(struct ciss_softc *sc, cr_qhead_t *qh)
2135 {
2136 struct ciss_request *cr;
2137 struct ciss_command *cc;
2138 u_int32_t tag, index;
2139
2140 debug_called(3);
2141
2142 /*
2143 * Loop quickly taking requests from the adapter and moving them
2144 * to the completed queue.
2145 */
2146 for (;;) {
2147 tag = sc->ciss_reply[sc->ciss_rqidx];
2148 if ((tag & CISS_CYCLE_MASK) != sc->ciss_cycle)
2149 break;
2150 index = tag >> 2;
2151 debug(2, "completed command %d%s\n", index,
2152 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
2153 if (index < sc->ciss_max_requests) {
2154 cr = &(sc->ciss_request[index]);
2155 cc = cr->cr_cc;
2156 cc->header.host_tag = tag; /* not updated by adapter */
2157 ciss_enqueue_complete(cr, qh);
2158 } else {
2159 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
2160 }
2161 if (++sc->ciss_rqidx == sc->ciss_max_requests) {
2162 sc->ciss_rqidx = 0;
2163 sc->ciss_cycle ^= 1;
2164 }
2165 }
2166
2167 }
2168
2169 /************************************************************************
2170 * Take an interrupt from the adapter.
2171 */
2172 static void
2173 ciss_intr(void *arg)
2174 {
2175 cr_qhead_t qh;
2176 struct ciss_softc *sc = (struct ciss_softc *)arg;
2177
2178 /*
2179 * The only interrupt we recognise indicates that there are
2180 * entries in the outbound post queue.
2181 */
2182 STAILQ_INIT(&qh);
2183 ciss_done(sc, &qh);
2184 mtx_lock(&sc->ciss_mtx);
2185 ciss_complete(sc, &qh);
2186 mtx_unlock(&sc->ciss_mtx);
2187 }
2188
2189 static void
2190 ciss_perf_intr(void *arg)
2191 {
2192 struct ciss_softc *sc = (struct ciss_softc *)arg;
2193
2194 /* Clear the interrupt and flush the bridges. Docs say that the flush
2195 * needs to be done twice, which doesn't seem right.
2196 */
2197 CISS_TL_PERF_CLEAR_INT(sc);
2198 CISS_TL_PERF_FLUSH_INT(sc);
2199
2200 ciss_perf_msi_intr(sc);
2201 }
2202
2203 static void
2204 ciss_perf_msi_intr(void *arg)
2205 {
2206 cr_qhead_t qh;
2207 struct ciss_softc *sc = (struct ciss_softc *)arg;
2208
2209 STAILQ_INIT(&qh);
2210 ciss_perf_done(sc, &qh);
2211 mtx_lock(&sc->ciss_mtx);
2212 ciss_complete(sc, &qh);
2213 mtx_unlock(&sc->ciss_mtx);
2214 }
2215
2216
2217 /************************************************************************
2218 * Process completed requests.
2219 *
2220 * Requests can be completed in three fashions:
2221 *
2222 * - by invoking a callback function (cr_complete is non-null)
2223 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set)
2224 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context
2225 */
2226 static void
2227 ciss_complete(struct ciss_softc *sc, cr_qhead_t *qh)
2228 {
2229 struct ciss_request *cr;
2230
2231 debug_called(2);
2232
2233 /*
2234 * Loop taking requests off the completed queue and performing
2235 * completion processing on them.
2236 */
2237 for (;;) {
2238 if ((cr = ciss_dequeue_complete(sc, qh)) == NULL)
2239 break;
2240 ciss_unmap_request(cr);
2241
2242 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
2243 ciss_printf(sc, "WARNING: completing non-busy request\n");
2244 cr->cr_flags &= ~CISS_REQ_BUSY;
2245
2246 /*
2247 * If the request has a callback, invoke it.
2248 */
2249 if (cr->cr_complete != NULL) {
2250 cr->cr_complete(cr);
2251 continue;
2252 }
2253
2254 /*
2255 * If someone is sleeping on this request, wake them up.
2256 */
2257 if (cr->cr_flags & CISS_REQ_SLEEP) {
2258 cr->cr_flags &= ~CISS_REQ_SLEEP;
2259 wakeup(cr);
2260 continue;
2261 }
2262
2263 /*
2264 * If someone is polling this request for completion, signal.
2265 */
2266 if (cr->cr_flags & CISS_REQ_POLL) {
2267 cr->cr_flags &= ~CISS_REQ_POLL;
2268 continue;
2269 }
2270
2271 /*
2272 * Give up and throw the request back on the free queue. This
2273 * should never happen; resources will probably be lost.
2274 */
2275 ciss_printf(sc, "WARNING: completed command with no submitter\n");
2276 ciss_enqueue_free(cr);
2277 }
2278 }
2279
2280 /************************************************************************
2281 * Report on the completion status of a request, and pass back SCSI
2282 * and command status values.
2283 */
2284 static int
2285 _ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status, const char *func)
2286 {
2287 struct ciss_command *cc;
2288 struct ciss_error_info *ce;
2289
2290 debug_called(2);
2291
2292 cc = cr->cr_cc;
2293 ce = (struct ciss_error_info *)&(cc->sg[0]);
2294
2295 /*
2296 * We don't consider data under/overrun an error for the Report
2297 * Logical/Physical LUNs commands.
2298 */
2299 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) &&
2300 ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) ||
2301 (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) &&
2302 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) ||
2303 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) ||
2304 (cc->cdb.cdb[0] == INQUIRY))) {
2305 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR;
2306 debug(2, "ignoring irrelevant under/overrun error");
2307 }
2308
2309 /*
2310 * Check the command's error bit, if clear, there's no status and
2311 * everything is OK.
2312 */
2313 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) {
2314 if (scsi_status != NULL)
2315 *scsi_status = SCSI_STATUS_OK;
2316 if (command_status != NULL)
2317 *command_status = CISS_CMD_STATUS_SUCCESS;
2318 return(0);
2319 } else {
2320 if (command_status != NULL)
2321 *command_status = ce->command_status;
2322 if (scsi_status != NULL) {
2323 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) {
2324 *scsi_status = ce->scsi_status;
2325 } else {
2326 *scsi_status = -1;
2327 }
2328 }
2329 if (bootverbose)
2330 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n",
2331 ce->command_status, ciss_name_command_status(ce->command_status),
2332 ce->scsi_status);
2333 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) {
2334 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x, function %s\n",
2335 ce->additional_error_info.invalid_command.offense_size,
2336 ce->additional_error_info.invalid_command.offense_offset,
2337 ce->additional_error_info.invalid_command.offense_value,
2338 func);
2339 }
2340 }
2341 #if 0
2342 ciss_print_request(cr);
2343 #endif
2344 return(1);
2345 }
2346
2347 /************************************************************************
2348 * Issue a request and don't return until it's completed.
2349 *
2350 * Depending on adapter status, we may poll or sleep waiting for
2351 * completion.
2352 */
2353 static int
2354 ciss_synch_request(struct ciss_request *cr, int timeout)
2355 {
2356 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) {
2357 return(ciss_wait_request(cr, timeout));
2358 } else {
2359 return(ciss_poll_request(cr, timeout));
2360 }
2361 }
2362
2363 /************************************************************************
2364 * Issue a request and poll for completion.
2365 *
2366 * Timeout in milliseconds.
2367 */
2368 static int
2369 ciss_poll_request(struct ciss_request *cr, int timeout)
2370 {
2371 cr_qhead_t qh;
2372 struct ciss_softc *sc;
2373 int error;
2374
2375 debug_called(2);
2376
2377 STAILQ_INIT(&qh);
2378 sc = cr->cr_sc;
2379 cr->cr_flags |= CISS_REQ_POLL;
2380 if ((error = ciss_start(cr)) != 0)
2381 return(error);
2382
2383 do {
2384 if (sc->ciss_perf)
2385 ciss_perf_done(sc, &qh);
2386 else
2387 ciss_done(sc, &qh);
2388 ciss_complete(sc, &qh);
2389 if (!(cr->cr_flags & CISS_REQ_POLL))
2390 return(0);
2391 DELAY(1000);
2392 } while (timeout-- >= 0);
2393 return(EWOULDBLOCK);
2394 }
2395
2396 /************************************************************************
2397 * Issue a request and sleep waiting for completion.
2398 *
2399 * Timeout in milliseconds. Note that a spurious wakeup will reset
2400 * the timeout.
2401 */
2402 static int
2403 ciss_wait_request(struct ciss_request *cr, int timeout)
2404 {
2405 int error;
2406
2407 debug_called(2);
2408
2409 cr->cr_flags |= CISS_REQ_SLEEP;
2410 if ((error = ciss_start(cr)) != 0)
2411 return(error);
2412
2413 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) {
2414 error = msleep(cr, &cr->cr_sc->ciss_mtx, PRIBIO, "cissREQ", (timeout * hz) / 1000);
2415 }
2416 return(error);
2417 }
2418
2419 #if 0
2420 /************************************************************************
2421 * Abort a request. Note that a potential exists here to race the
2422 * request being completed; the caller must deal with this.
2423 */
2424 static int
2425 ciss_abort_request(struct ciss_request *ar)
2426 {
2427 struct ciss_request *cr;
2428 struct ciss_command *cc;
2429 struct ciss_message_cdb *cmc;
2430 int error;
2431
2432 debug_called(1);
2433
2434 /* get a request */
2435 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0)
2436 return(error);
2437
2438 /* build the abort command */
2439 cc = cr->cr_cc;
2440 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */
2441 cc->header.address.physical.target = 0;
2442 cc->header.address.physical.bus = 0;
2443 cc->cdb.cdb_length = sizeof(*cmc);
2444 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
2445 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2446 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
2447 cc->cdb.timeout = 30;
2448
2449 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]);
2450 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT;
2451 cmc->type = CISS_MESSAGE_ABORT_TASK;
2452 cmc->abort_tag = ar->cr_tag; /* endianness?? */
2453
2454 /*
2455 * Send the request and wait for a response. If we believe we
2456 * aborted the request OK, clear the flag that indicates it's
2457 * running.
2458 */
2459 error = ciss_synch_request(cr, 35 * 1000);
2460 if (!error)
2461 error = ciss_report_request(cr, NULL, NULL);
2462 ciss_release_request(cr);
2463
2464 return(error);
2465 }
2466 #endif
2467
2468
2469 /************************************************************************
2470 * Fetch and initialise a request
2471 */
2472 static int
2473 ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp)
2474 {
2475 struct ciss_request *cr;
2476
2477 debug_called(2);
2478
2479 /*
2480 * Get a request and clean it up.
2481 */
2482 if ((cr = ciss_dequeue_free(sc)) == NULL)
2483 return(ENOMEM);
2484
2485 cr->cr_data = NULL;
2486 cr->cr_flags = 0;
2487 cr->cr_complete = NULL;
2488 cr->cr_private = NULL;
2489 cr->cr_sg_tag = CISS_SG_MAX; /* Backstop to prevent accidents */
2490
2491 ciss_preen_command(cr);
2492 *crp = cr;
2493 return(0);
2494 }
2495
2496 static void
2497 ciss_preen_command(struct ciss_request *cr)
2498 {
2499 struct ciss_command *cc;
2500 u_int32_t cmdphys;
2501
2502 /*
2503 * Clean up the command structure.
2504 *
2505 * Note that we set up the error_info structure here, since the
2506 * length can be overwritten by any command.
2507 */
2508 cc = cr->cr_cc;
2509 cc->header.sg_in_list = 0; /* kinda inefficient this way */
2510 cc->header.sg_total = 0;
2511 cc->header.host_tag = cr->cr_tag << 2;
2512 cc->header.host_tag_zeroes = 0;
2513 bzero(&(cc->sg[0]), CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command));
2514 cmdphys = cr->cr_ccphys;
2515 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command);
2516 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command);
2517 }
2518
2519 /************************************************************************
2520 * Release a request to the free list.
2521 */
2522 static void
2523 ciss_release_request(struct ciss_request *cr)
2524 {
2525 struct ciss_softc *sc;
2526
2527 debug_called(2);
2528
2529 sc = cr->cr_sc;
2530
2531 /* release the request to the free queue */
2532 ciss_requeue_free(cr);
2533 }
2534
2535 /************************************************************************
2536 * Allocate a request that will be used to send a BMIC command. Do some
2537 * of the common setup here to avoid duplicating it everywhere else.
2538 */
2539 static int
2540 ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
2541 int opcode, void **bufp, size_t bufsize)
2542 {
2543 struct ciss_request *cr;
2544 struct ciss_command *cc;
2545 struct ciss_bmic_cdb *cbc;
2546 void *buf;
2547 int error;
2548 int dataout;
2549
2550 debug_called(2);
2551
2552 cr = NULL;
2553 buf = NULL;
2554
2555 /*
2556 * Get a request.
2557 */
2558 if ((error = ciss_get_request(sc, &cr)) != 0)
2559 goto out;
2560
2561 /*
2562 * Allocate data storage if requested, determine the data direction.
2563 */
2564 dataout = 0;
2565 if ((bufsize > 0) && (bufp != NULL)) {
2566 if (*bufp == NULL) {
2567 if ((buf = malloc(bufsize, CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO)) == NULL) {
2568 error = ENOMEM;
2569 goto out;
2570 }
2571 } else {
2572 buf = *bufp;
2573 dataout = 1; /* we are given a buffer, so we are writing */
2574 }
2575 }
2576
2577 /*
2578 * Build a CISS BMIC command to get the logical drive ID.
2579 */
2580 cr->cr_data = buf;
2581 cr->cr_length = bufsize;
2582 if (!dataout)
2583 cr->cr_flags = CISS_REQ_DATAIN;
2584
2585 cc = cr->cr_cc;
2586 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
2587 cc->header.address.physical.bus = 0;
2588 cc->header.address.physical.target = 0;
2589 cc->cdb.cdb_length = sizeof(*cbc);
2590 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
2591 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2592 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ;
2593 cc->cdb.timeout = 0;
2594
2595 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
2596 bzero(cbc, sizeof(*cbc));
2597 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ;
2598 cbc->bmic_opcode = opcode;
2599 cbc->size = htons((u_int16_t)bufsize);
2600
2601 out:
2602 if (error) {
2603 if (cr != NULL)
2604 ciss_release_request(cr);
2605 } else {
2606 *crp = cr;
2607 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL))
2608 *bufp = buf;
2609 }
2610 return(error);
2611 }
2612
2613 /************************************************************************
2614 * Handle a command passed in from userspace.
2615 */
2616 static int
2617 ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc)
2618 {
2619 struct ciss_request *cr;
2620 struct ciss_command *cc;
2621 struct ciss_error_info *ce;
2622 int error = 0;
2623
2624 debug_called(1);
2625
2626 cr = NULL;
2627
2628 /*
2629 * Get a request.
2630 */
2631 while (ciss_get_request(sc, &cr) != 0)
2632 msleep(sc, &sc->ciss_mtx, PPAUSE, "cissREQ", hz);
2633 cc = cr->cr_cc;
2634
2635 /*
2636 * Allocate an in-kernel databuffer if required, copy in user data.
2637 */
2638 mtx_unlock(&sc->ciss_mtx);
2639 cr->cr_length = ioc->buf_size;
2640 if (ioc->buf_size > 0) {
2641 if ((cr->cr_data = malloc(ioc->buf_size, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
2642 error = ENOMEM;
2643 goto out_unlocked;
2644 }
2645 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) {
2646 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2647 goto out_unlocked;
2648 }
2649 }
2650
2651 /*
2652 * Build the request based on the user command.
2653 */
2654 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address));
2655 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb));
2656
2657 /* XXX anything else to populate here? */
2658 mtx_lock(&sc->ciss_mtx);
2659
2660 /*
2661 * Run the command.
2662 */
2663 if ((error = ciss_synch_request(cr, 60 * 1000))) {
2664 debug(0, "request failed - %d", error);
2665 goto out;
2666 }
2667
2668 /*
2669 * Check to see if the command succeeded.
2670 */
2671 ce = (struct ciss_error_info *)&(cc->sg[0]);
2672 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0)
2673 bzero(ce, sizeof(*ce));
2674
2675 /*
2676 * Copy the results back to the user.
2677 */
2678 bcopy(ce, &ioc->error_info, sizeof(*ce));
2679 mtx_unlock(&sc->ciss_mtx);
2680 if ((ioc->buf_size > 0) &&
2681 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) {
2682 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2683 goto out_unlocked;
2684 }
2685
2686 /* done OK */
2687 error = 0;
2688
2689 out_unlocked:
2690 mtx_lock(&sc->ciss_mtx);
2691
2692 out:
2693 if ((cr != NULL) && (cr->cr_data != NULL))
2694 free(cr->cr_data, CISS_MALLOC_CLASS);
2695 if (cr != NULL)
2696 ciss_release_request(cr);
2697 return(error);
2698 }
2699
2700 /************************************************************************
2701 * Map a request into bus-visible space, initialise the scatter/gather
2702 * list.
2703 */
2704 static int
2705 ciss_map_request(struct ciss_request *cr)
2706 {
2707 struct ciss_softc *sc;
2708 int error = 0;
2709
2710 debug_called(2);
2711
2712 sc = cr->cr_sc;
2713
2714 /* check that mapping is necessary */
2715 if (cr->cr_flags & CISS_REQ_MAPPED)
2716 return(0);
2717
2718 cr->cr_flags |= CISS_REQ_MAPPED;
2719
2720 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2721 BUS_DMASYNC_PREWRITE);
2722
2723 if (cr->cr_data != NULL) {
2724 if (cr->cr_flags & CISS_REQ_CCB)
2725 error = bus_dmamap_load_ccb(sc->ciss_buffer_dmat,
2726 cr->cr_datamap, cr->cr_data,
2727 ciss_request_map_helper, cr, 0);
2728 else
2729 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap,
2730 cr->cr_data, cr->cr_length,
2731 ciss_request_map_helper, cr, 0);
2732 if (error != 0)
2733 return (error);
2734 } else {
2735 /*
2736 * Post the command to the adapter.
2737 */
2738 cr->cr_sg_tag = CISS_SG_NONE;
2739 cr->cr_flags |= CISS_REQ_BUSY;
2740 if (sc->ciss_perf)
2741 CISS_TL_PERF_POST_CMD(sc, cr);
2742 else
2743 CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys);
2744 }
2745
2746 return(0);
2747 }
2748
2749 static void
2750 ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2751 {
2752 struct ciss_command *cc;
2753 struct ciss_request *cr;
2754 struct ciss_softc *sc;
2755 int i;
2756
2757 debug_called(2);
2758
2759 cr = (struct ciss_request *)arg;
2760 sc = cr->cr_sc;
2761 cc = cr->cr_cc;
2762
2763 for (i = 0; i < nseg; i++) {
2764 cc->sg[i].address = segs[i].ds_addr;
2765 cc->sg[i].length = segs[i].ds_len;
2766 cc->sg[i].extension = 0;
2767 }
2768 /* we leave the s/g table entirely within the command */
2769 cc->header.sg_in_list = nseg;
2770 cc->header.sg_total = nseg;
2771
2772 if (cr->cr_flags & CISS_REQ_DATAIN)
2773 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD);
2774 if (cr->cr_flags & CISS_REQ_DATAOUT)
2775 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE);
2776
2777 if (nseg == 0)
2778 cr->cr_sg_tag = CISS_SG_NONE;
2779 else if (nseg == 1)
2780 cr->cr_sg_tag = CISS_SG_1;
2781 else if (nseg == 2)
2782 cr->cr_sg_tag = CISS_SG_2;
2783 else if (nseg <= 4)
2784 cr->cr_sg_tag = CISS_SG_4;
2785 else if (nseg <= 8)
2786 cr->cr_sg_tag = CISS_SG_8;
2787 else if (nseg <= 16)
2788 cr->cr_sg_tag = CISS_SG_16;
2789 else if (nseg <= 32)
2790 cr->cr_sg_tag = CISS_SG_32;
2791 else
2792 cr->cr_sg_tag = CISS_SG_MAX;
2793
2794 /*
2795 * Post the command to the adapter.
2796 */
2797 cr->cr_flags |= CISS_REQ_BUSY;
2798 if (sc->ciss_perf)
2799 CISS_TL_PERF_POST_CMD(sc, cr);
2800 else
2801 CISS_TL_SIMPLE_POST_CMD(sc, cr->cr_ccphys);
2802 }
2803
2804 /************************************************************************
2805 * Unmap a request from bus-visible space.
2806 */
2807 static void
2808 ciss_unmap_request(struct ciss_request *cr)
2809 {
2810 struct ciss_softc *sc;
2811
2812 debug_called(2);
2813
2814 sc = cr->cr_sc;
2815
2816 /* check that unmapping is necessary */
2817 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0)
2818 return;
2819
2820 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2821 BUS_DMASYNC_POSTWRITE);
2822
2823 if (cr->cr_data == NULL)
2824 goto out;
2825
2826 if (cr->cr_flags & CISS_REQ_DATAIN)
2827 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD);
2828 if (cr->cr_flags & CISS_REQ_DATAOUT)
2829 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE);
2830
2831 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap);
2832 out:
2833 cr->cr_flags &= ~CISS_REQ_MAPPED;
2834 }
2835
2836 /************************************************************************
2837 * Attach the driver to CAM.
2838 *
2839 * We put all the logical drives on a single SCSI bus.
2840 */
2841 static int
2842 ciss_cam_init(struct ciss_softc *sc)
2843 {
2844 int i, maxbus;
2845
2846 debug_called(1);
2847
2848 /*
2849 * Allocate a devq. We can reuse this for the masked physical
2850 * devices if we decide to export these as well.
2851 */
2852 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests - 2)) == NULL) {
2853 ciss_printf(sc, "can't allocate CAM SIM queue\n");
2854 return(ENOMEM);
2855 }
2856
2857 /*
2858 * Create a SIM.
2859 *
2860 * This naturally wastes a bit of memory. The alternative is to allocate
2861 * and register each bus as it is found, and then track them on a linked
2862 * list. Unfortunately, the driver has a few places where it needs to
2863 * look up the SIM based solely on bus number, and it's unclear whether
2864 * a list traversal would work for these situations.
2865 */
2866 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus +
2867 CISS_PHYSICAL_BASE);
2868 sc->ciss_cam_sim = malloc(maxbus * sizeof(struct cam_sim*),
2869 CISS_MALLOC_CLASS, M_NOWAIT | M_ZERO);
2870 if (sc->ciss_cam_sim == NULL) {
2871 ciss_printf(sc, "can't allocate memory for controller SIM\n");
2872 return(ENOMEM);
2873 }
2874
2875 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2876 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2877 "ciss", sc,
2878 device_get_unit(sc->ciss_dev),
2879 &sc->ciss_mtx,
2880 2,
2881 sc->ciss_max_requests - 2,
2882 sc->ciss_cam_devq)) == NULL) {
2883 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2884 return(ENOMEM);
2885 }
2886
2887 /*
2888 * Register bus with this SIM.
2889 */
2890 mtx_lock(&sc->ciss_mtx);
2891 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) {
2892 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2893 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2894 mtx_unlock(&sc->ciss_mtx);
2895 return (ENXIO);
2896 }
2897 }
2898 mtx_unlock(&sc->ciss_mtx);
2899 }
2900
2901 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2902 CISS_PHYSICAL_BASE; i++) {
2903 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2904 "ciss", sc,
2905 device_get_unit(sc->ciss_dev),
2906 &sc->ciss_mtx, 1,
2907 sc->ciss_max_requests - 2,
2908 sc->ciss_cam_devq)) == NULL) {
2909 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2910 return (ENOMEM);
2911 }
2912
2913 mtx_lock(&sc->ciss_mtx);
2914 if (xpt_bus_register(sc->ciss_cam_sim[i], sc->ciss_dev, i) != 0) {
2915 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2916 mtx_unlock(&sc->ciss_mtx);
2917 return (ENXIO);
2918 }
2919 mtx_unlock(&sc->ciss_mtx);
2920 }
2921
2922 return(0);
2923 }
2924
2925 /************************************************************************
2926 * Initiate a rescan of the 'logical devices' SIM
2927 */
2928 static void
2929 ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target)
2930 {
2931 union ccb *ccb;
2932
2933 debug_called(1);
2934
2935 if ((ccb = xpt_alloc_ccb_nowait()) == NULL) {
2936 ciss_printf(sc, "rescan failed (can't allocate CCB)\n");
2937 return;
2938 }
2939
2940 if (xpt_create_path(&ccb->ccb_h.path, NULL,
2941 cam_sim_path(sc->ciss_cam_sim[bus]),
2942 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
2943 ciss_printf(sc, "rescan failed (can't create path)\n");
2944 xpt_free_ccb(ccb);
2945 return;
2946 }
2947 xpt_rescan(ccb);
2948 /* scan is now in progress */
2949 }
2950
2951 /************************************************************************
2952 * Handle requests coming from CAM
2953 */
2954 static void
2955 ciss_cam_action(struct cam_sim *sim, union ccb *ccb)
2956 {
2957 struct ciss_softc *sc;
2958 struct ccb_scsiio *csio;
2959 int bus, target;
2960 int physical;
2961
2962 sc = cam_sim_softc(sim);
2963 bus = cam_sim_bus(sim);
2964 csio = (struct ccb_scsiio *)&ccb->csio;
2965 target = csio->ccb_h.target_id;
2966 physical = CISS_IS_PHYSICAL(bus);
2967
2968 switch (ccb->ccb_h.func_code) {
2969
2970 /* perform SCSI I/O */
2971 case XPT_SCSI_IO:
2972 if (!ciss_cam_action_io(sim, csio))
2973 return;
2974 break;
2975
2976 /* perform geometry calculations */
2977 case XPT_CALC_GEOMETRY:
2978 {
2979 struct ccb_calc_geometry *ccg = &ccb->ccg;
2980 struct ciss_ldrive *ld;
2981
2982 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2983
2984 ld = NULL;
2985 if (!physical)
2986 ld = &sc->ciss_logical[bus][target];
2987
2988 /*
2989 * Use the cached geometry settings unless the fault tolerance
2990 * is invalid.
2991 */
2992 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) {
2993 u_int32_t secs_per_cylinder;
2994
2995 ccg->heads = 255;
2996 ccg->secs_per_track = 32;
2997 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2998 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2999 } else {
3000 ccg->heads = ld->cl_geometry.heads;
3001 ccg->secs_per_track = ld->cl_geometry.sectors;
3002 ccg->cylinders = ntohs(ld->cl_geometry.cylinders);
3003 }
3004 ccb->ccb_h.status = CAM_REQ_CMP;
3005 break;
3006 }
3007
3008 /* handle path attribute inquiry */
3009 case XPT_PATH_INQ:
3010 {
3011 struct ccb_pathinq *cpi = &ccb->cpi;
3012 int sg_length;
3013
3014 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
3015
3016 cpi->version_num = 1;
3017 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */
3018 cpi->target_sprt = 0;
3019 cpi->hba_misc = 0;
3020 cpi->max_target = sc->ciss_cfg->max_logical_supported;
3021 cpi->max_lun = 0; /* 'logical drive' channel only */
3022 cpi->initiator_id = sc->ciss_cfg->max_logical_supported;
3023 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
3024 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN);
3025 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
3026 cpi->unit_number = cam_sim_unit(sim);
3027 cpi->bus_id = cam_sim_bus(sim);
3028 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
3029 cpi->transport = XPORT_SPI;
3030 cpi->transport_version = 2;
3031 cpi->protocol = PROTO_SCSI;
3032 cpi->protocol_version = SCSI_REV_2;
3033 if (sc->ciss_cfg->max_sg_length == 0) {
3034 sg_length = 17;
3035 } else {
3036 /* XXX Fix for ZMR cards that advertise max_sg_length == 32
3037 * Confusing bit here. max_sg_length is usually a power of 2. We always
3038 * need to subtract 1 to account for partial pages. Then we need to
3039 * align on a valid PAGE_SIZE so we round down to the nearest power of 2.
3040 * Add 1 so we can then subtract it out in the assignment to maxio.
3041 * The reason for all these shenanigans is to create a maxio value that
3042 * creates IO operations to volumes that yield consistent operations
3043 * with good performance.
3044 */
3045 sg_length = sc->ciss_cfg->max_sg_length - 1;
3046 sg_length = (1 << (fls(sg_length) - 1)) + 1;
3047 }
3048 cpi->maxio = (min(CISS_MAX_SG_ELEMENTS, sg_length) - 1) * PAGE_SIZE;
3049 ccb->ccb_h.status = CAM_REQ_CMP;
3050 break;
3051 }
3052
3053 case XPT_GET_TRAN_SETTINGS:
3054 {
3055 struct ccb_trans_settings *cts = &ccb->cts;
3056 int bus, target;
3057 struct ccb_trans_settings_spi *spi = &cts->xport_specific.spi;
3058 struct ccb_trans_settings_scsi *scsi = &cts->proto_specific.scsi;
3059
3060 bus = cam_sim_bus(sim);
3061 target = cts->ccb_h.target_id;
3062
3063 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
3064 /* disconnect always OK */
3065 cts->protocol = PROTO_SCSI;
3066 cts->protocol_version = SCSI_REV_2;
3067 cts->transport = XPORT_SPI;
3068 cts->transport_version = 2;
3069
3070 spi->valid = CTS_SPI_VALID_DISC;
3071 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
3072
3073 scsi->valid = CTS_SCSI_VALID_TQ;
3074 scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
3075
3076 cts->ccb_h.status = CAM_REQ_CMP;
3077 break;
3078 }
3079
3080 default: /* we can't do this */
3081 debug(1, "unspported func_code = 0x%x", ccb->ccb_h.func_code);
3082 ccb->ccb_h.status = CAM_REQ_INVALID;
3083 break;
3084 }
3085
3086 xpt_done(ccb);
3087 }
3088
3089 /************************************************************************
3090 * Handle a CAM SCSI I/O request.
3091 */
3092 static int
3093 ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
3094 {
3095 struct ciss_softc *sc;
3096 int bus, target;
3097 struct ciss_request *cr;
3098 struct ciss_command *cc;
3099 int error;
3100
3101 sc = cam_sim_softc(sim);
3102 bus = cam_sim_bus(sim);
3103 target = csio->ccb_h.target_id;
3104
3105 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
3106
3107 /* check that the CDB pointer is not to a physical address */
3108 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
3109 debug(3, " CDB pointer is to physical address");
3110 csio->ccb_h.status = CAM_REQ_CMP_ERR;
3111 }
3112
3113 /* abandon aborted ccbs or those that have failed validation */
3114 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
3115 debug(3, "abandoning CCB due to abort/validation failure");
3116 return(EINVAL);
3117 }
3118
3119 /* handle emulation of some SCSI commands ourself */
3120 if (ciss_cam_emulate(sc, csio))
3121 return(0);
3122
3123 /*
3124 * Get a request to manage this command. If we can't, return the
3125 * ccb, freeze the queue and flag so that we unfreeze it when a
3126 * request completes.
3127 */
3128 if ((error = ciss_get_request(sc, &cr)) != 0) {
3129 xpt_freeze_simq(sim, 1);
3130 sc->ciss_flags |= CISS_FLAG_BUSY;
3131 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3132 return(error);
3133 }
3134
3135 /*
3136 * Build the command.
3137 */
3138 cc = cr->cr_cc;
3139 cr->cr_data = csio;
3140 cr->cr_length = csio->dxfer_len;
3141 cr->cr_complete = ciss_cam_complete;
3142 cr->cr_private = csio;
3143
3144 /*
3145 * Target the right logical volume.
3146 */
3147 if (CISS_IS_PHYSICAL(bus))
3148 cc->header.address =
3149 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address;
3150 else
3151 cc->header.address =
3152 sc->ciss_logical[bus][target].cl_address;
3153 cc->cdb.cdb_length = csio->cdb_len;
3154 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3155 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */
3156 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
3157 cr->cr_flags = CISS_REQ_DATAOUT | CISS_REQ_CCB;
3158 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3159 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
3160 cr->cr_flags = CISS_REQ_DATAIN | CISS_REQ_CCB;
3161 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3162 } else {
3163 cr->cr_data = NULL;
3164 cr->cr_flags = 0;
3165 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
3166 }
3167 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1;
3168 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
3169 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len);
3170 } else {
3171 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len);
3172 }
3173
3174 /*
3175 * Submit the request to the adapter.
3176 *
3177 * Note that this may fail if we're unable to map the request (and
3178 * if we ever learn a transport layer other than simple, may fail
3179 * if the adapter rejects the command).
3180 */
3181 if ((error = ciss_start(cr)) != 0) {
3182 xpt_freeze_simq(sim, 1);
3183 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3184 if (error == EINPROGRESS) {
3185 error = 0;
3186 } else {
3187 csio->ccb_h.status |= CAM_REQUEUE_REQ;
3188 ciss_release_request(cr);
3189 }
3190 return(error);
3191 }
3192
3193 return(0);
3194 }
3195
3196 /************************************************************************
3197 * Emulate SCSI commands the adapter doesn't handle as we might like.
3198 */
3199 static int
3200 ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio)
3201 {
3202 int bus, target;
3203 u_int8_t opcode;
3204
3205 target = csio->ccb_h.target_id;
3206 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3207 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3208 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0];
3209
3210 if (CISS_IS_PHYSICAL(bus)) {
3211 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) {
3212 csio->ccb_h.status |= CAM_SEL_TIMEOUT;
3213 xpt_done((union ccb *)csio);
3214 return(1);
3215 } else
3216 return(0);
3217 }
3218
3219 /*
3220 * Handle requests for volumes that don't exist or are not online.
3221 * A selection timeout is slightly better than an illegal request.
3222 * Other errors might be better.
3223 */
3224 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) {
3225 csio->ccb_h.status |= CAM_SEL_TIMEOUT;
3226 xpt_done((union ccb *)csio);
3227 return(1);
3228 }
3229
3230 /* if we have to fake Synchronise Cache */
3231 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) {
3232 /*
3233 * If this is a Synchronise Cache command, typically issued when
3234 * a device is closed, flush the adapter and complete now.
3235 */
3236 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
3237 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) {
3238 ciss_flush_adapter(sc);
3239 csio->ccb_h.status |= CAM_REQ_CMP;
3240 xpt_done((union ccb *)csio);
3241 return(1);
3242 }
3243 }
3244
3245 /*
3246 * A CISS target can only ever have one lun per target. REPORT_LUNS requires
3247 * at least one LUN field to be pre created for us, so snag it and fill in
3248 * the least significant byte indicating 1 LUN here. Emulate the command
3249 * return to shut up warning on console of a CDB error. swb
3250 */
3251 if (opcode == REPORT_LUNS && csio->dxfer_len > 0) {
3252 csio->data_ptr[3] = 8;
3253 csio->ccb_h.status |= CAM_REQ_CMP;
3254 xpt_done((union ccb *)csio);
3255 return(1);
3256 }
3257
3258 return(0);
3259 }
3260
3261 /************************************************************************
3262 * Check for possibly-completed commands.
3263 */
3264 static void
3265 ciss_cam_poll(struct cam_sim *sim)
3266 {
3267 cr_qhead_t qh;
3268 struct ciss_softc *sc = cam_sim_softc(sim);
3269
3270 debug_called(2);
3271
3272 STAILQ_INIT(&qh);
3273 if (sc->ciss_perf)
3274 ciss_perf_done(sc, &qh);
3275 else
3276 ciss_done(sc, &qh);
3277 ciss_complete(sc, &qh);
3278 }
3279
3280 /************************************************************************
3281 * Handle completion of a command - pass results back through the CCB
3282 */
3283 static void
3284 ciss_cam_complete(struct ciss_request *cr)
3285 {
3286 struct ciss_softc *sc;
3287 struct ciss_command *cc;
3288 struct ciss_error_info *ce;
3289 struct ccb_scsiio *csio;
3290 int scsi_status;
3291 int command_status;
3292
3293 debug_called(2);
3294
3295 sc = cr->cr_sc;
3296 cc = cr->cr_cc;
3297 ce = (struct ciss_error_info *)&(cc->sg[0]);
3298 csio = (struct ccb_scsiio *)cr->cr_private;
3299
3300 /*
3301 * Extract status values from request.
3302 */
3303 ciss_report_request(cr, &command_status, &scsi_status);
3304 csio->scsi_status = scsi_status;
3305
3306 /*
3307 * Handle specific SCSI status values.
3308 */
3309 switch(scsi_status) {
3310 /* no status due to adapter error */
3311 case -1:
3312 debug(0, "adapter error");
3313 csio->ccb_h.status |= CAM_REQ_CMP_ERR;
3314 break;
3315
3316 /* no status due to command completed OK */
3317 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */
3318 debug(2, "SCSI_STATUS_OK");
3319 csio->ccb_h.status |= CAM_REQ_CMP;
3320 break;
3321
3322 /* check condition, sense data included */
3323 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */
3324 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n",
3325 ce->sense_length, ce->residual_count);
3326 bzero(&csio->sense_data, SSD_FULL_SIZE);
3327 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length);
3328 if (csio->sense_len > ce->sense_length)
3329 csio->sense_resid = csio->sense_len - ce->sense_length;
3330 else
3331 csio->sense_resid = 0;
3332 csio->resid = ce->residual_count;
3333 csio->ccb_h.status |= CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
3334 #ifdef CISS_DEBUG
3335 {
3336 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0];
3337 debug(0, "sense key %x", scsi_get_sense_key(sns, csio->sense_len -
3338 csio->sense_resid, /*show_errors*/ 1));
3339 }
3340 #endif
3341 break;
3342
3343 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */
3344 debug(0, "SCSI_STATUS_BUSY");
3345 csio->ccb_h.status |= CAM_SCSI_BUSY;
3346 break;
3347
3348 default:
3349 debug(0, "unknown status 0x%x", csio->scsi_status);
3350 csio->ccb_h.status |= CAM_REQ_CMP_ERR;
3351 break;
3352 }
3353
3354 /* handle post-command fixup */
3355 ciss_cam_complete_fixup(sc, csio);
3356
3357 ciss_release_request(cr);
3358 if (sc->ciss_flags & CISS_FLAG_BUSY) {
3359 sc->ciss_flags &= ~CISS_FLAG_BUSY;
3360 if (csio->ccb_h.status & CAM_RELEASE_SIMQ)
3361 xpt_release_simq(xpt_path_sim(csio->ccb_h.path), 0);
3362 else
3363 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
3364 }
3365 xpt_done((union ccb *)csio);
3366 }
3367
3368 /********************************************************************************
3369 * Fix up the result of some commands here.
3370 */
3371 static void
3372 ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio)
3373 {
3374 struct scsi_inquiry_data *inq;
3375 struct ciss_ldrive *cl;
3376 uint8_t *cdb;
3377 int bus, target;
3378
3379 cdb = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
3380 (uint8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes;
3381 if (cdb[0] == INQUIRY &&
3382 (cdb[1] & SI_EVPD) == 0 &&
3383 (csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN &&
3384 csio->dxfer_len >= SHORT_INQUIRY_LENGTH) {
3385
3386 inq = (struct scsi_inquiry_data *)csio->data_ptr;
3387 target = csio->ccb_h.target_id;
3388 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
3389
3390 /*
3391 * Don't let hard drives be seen by the DA driver. They will still be
3392 * attached by the PASS driver.
3393 */
3394 if (CISS_IS_PHYSICAL(bus)) {
3395 if (SID_TYPE(inq) == T_DIRECT)
3396 inq->device = (inq->device & 0xe0) | T_NODEVICE;
3397 return;
3398 }
3399
3400 cl = &sc->ciss_logical[bus][target];
3401
3402 padstr(inq->vendor, "COMPAQ",
3403 SID_VENDOR_SIZE);
3404 padstr(inq->product,
3405 ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance),
3406 SID_PRODUCT_SIZE);
3407 padstr(inq->revision,
3408 ciss_name_ldrive_status(cl->cl_lstatus->status),
3409 SID_REVISION_SIZE);
3410 }
3411 }
3412
3413
3414 /********************************************************************************
3415 * Name the device at (target)
3416 *
3417 * XXX is this strictly correct?
3418 */
3419 static int
3420 ciss_name_device(struct ciss_softc *sc, int bus, int target)
3421 {
3422 struct cam_periph *periph;
3423 struct cam_path *path;
3424 int status;
3425
3426 if (CISS_IS_PHYSICAL(bus))
3427 return (0);
3428
3429 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]),
3430 target, 0);
3431
3432 if (status == CAM_REQ_CMP) {
3433 mtx_lock(&sc->ciss_mtx);
3434 periph = cam_periph_find(path, NULL);
3435 sprintf(sc->ciss_logical[bus][target].cl_name, "%s%d",
3436 periph->periph_name, periph->unit_number);
3437 mtx_unlock(&sc->ciss_mtx);
3438 xpt_free_path(path);
3439 return(0);
3440 }
3441 sc->ciss_logical[bus][target].cl_name[0] = 0;
3442 return(ENOENT);
3443 }
3444
3445 /************************************************************************
3446 * Periodic status monitoring.
3447 */
3448 static void
3449 ciss_periodic(void *arg)
3450 {
3451 struct ciss_softc *sc;
3452 struct ciss_request *cr = NULL;
3453 struct ciss_command *cc = NULL;
3454 int error = 0;
3455
3456 debug_called(1);
3457
3458 sc = (struct ciss_softc *)arg;
3459
3460 /*
3461 * Check the adapter heartbeat.
3462 */
3463 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) {
3464 sc->ciss_heart_attack++;
3465 debug(0, "adapter heart attack in progress 0x%x/%d",
3466 sc->ciss_heartbeat, sc->ciss_heart_attack);
3467 if (sc->ciss_heart_attack == 3) {
3468 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n");
3469 ciss_disable_adapter(sc);
3470 return;
3471 }
3472 } else {
3473 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat;
3474 sc->ciss_heart_attack = 0;
3475 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat);
3476 }
3477
3478 /*
3479 * Send the NOP message and wait for a response.
3480 */
3481 if (ciss_nop_message_heartbeat != 0 && (error = ciss_get_request(sc, &cr)) == 0) {
3482 cc = cr->cr_cc;
3483 cr->cr_complete = ciss_nop_complete;
3484 cc->cdb.cdb_length = 1;
3485 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
3486 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3487 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
3488 cc->cdb.timeout = 0;
3489 cc->cdb.cdb[0] = CISS_OPCODE_MESSAGE_NOP;
3490
3491 if ((error = ciss_start(cr)) != 0) {
3492 ciss_printf(sc, "SENDING NOP MESSAGE FAILED\n");
3493 }
3494 }
3495
3496 /*
3497 * If the notify event request has died for some reason, or has
3498 * not started yet, restart it.
3499 */
3500 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) {
3501 debug(0, "(re)starting Event Notify chain");
3502 ciss_notify_event(sc);
3503 }
3504
3505 /*
3506 * Reschedule.
3507 */
3508 callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz, ciss_periodic, sc);
3509 }
3510
3511 static void
3512 ciss_nop_complete(struct ciss_request *cr)
3513 {
3514 struct ciss_softc *sc;
3515 static int first_time = 1;
3516
3517 sc = cr->cr_sc;
3518 if (ciss_report_request(cr, NULL, NULL) != 0) {
3519 if (first_time == 1) {
3520 first_time = 0;
3521 ciss_printf(sc, "SENDING NOP MESSAGE FAILED (not logging anymore)\n");
3522 }
3523 }
3524
3525 ciss_release_request(cr);
3526 }
3527
3528 /************************************************************************
3529 * Disable the adapter.
3530 *
3531 * The all requests in completed queue is failed with hardware error.
3532 * This will cause failover in a multipath configuration.
3533 */
3534 static void
3535 ciss_disable_adapter(struct ciss_softc *sc)
3536 {
3537 cr_qhead_t qh;
3538 struct ciss_request *cr;
3539 struct ciss_command *cc;
3540 struct ciss_error_info *ce;
3541 int i;
3542
3543 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
3544 pci_disable_busmaster(sc->ciss_dev);
3545 sc->ciss_flags &= ~CISS_FLAG_RUNNING;
3546
3547 for (i = 1; i < sc->ciss_max_requests; i++) {
3548 cr = &sc->ciss_request[i];
3549 if ((cr->cr_flags & CISS_REQ_BUSY) == 0)
3550 continue;
3551
3552 cc = cr->cr_cc;
3553 ce = (struct ciss_error_info *)&(cc->sg[0]);
3554 ce->command_status = CISS_CMD_STATUS_HARDWARE_ERROR;
3555 ciss_enqueue_complete(cr, &qh);
3556 }
3557
3558 for (;;) {
3559 if ((cr = ciss_dequeue_complete(sc, &qh)) == NULL)
3560 break;
3561
3562 /*
3563 * If the request has a callback, invoke it.
3564 */
3565 if (cr->cr_complete != NULL) {
3566 cr->cr_complete(cr);
3567 continue;
3568 }
3569
3570 /*
3571 * If someone is sleeping on this request, wake them up.
3572 */
3573 if (cr->cr_flags & CISS_REQ_SLEEP) {
3574 cr->cr_flags &= ~CISS_REQ_SLEEP;
3575 wakeup(cr);
3576 continue;
3577 }
3578 }
3579 }
3580
3581 /************************************************************************
3582 * Request a notification response from the adapter.
3583 *
3584 * If (cr) is NULL, this is the first request of the adapter, so
3585 * reset the adapter's message pointer and start with the oldest
3586 * message available.
3587 */
3588 static void
3589 ciss_notify_event(struct ciss_softc *sc)
3590 {
3591 struct ciss_request *cr;
3592 struct ciss_command *cc;
3593 struct ciss_notify_cdb *cnc;
3594 int error;
3595
3596 debug_called(1);
3597
3598 cr = sc->ciss_periodic_notify;
3599
3600 /* get a request if we don't already have one */
3601 if (cr == NULL) {
3602 if ((error = ciss_get_request(sc, &cr)) != 0) {
3603 debug(0, "can't get notify event request");
3604 goto out;
3605 }
3606 sc->ciss_periodic_notify = cr;
3607 cr->cr_complete = ciss_notify_complete;
3608 debug(1, "acquired request %d", cr->cr_tag);
3609 }
3610
3611 /*
3612 * Get a databuffer if we don't already have one, note that the
3613 * adapter command wants a larger buffer than the actual
3614 * structure.
3615 */
3616 if (cr->cr_data == NULL) {
3617 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3618 debug(0, "can't get notify event request buffer");
3619 error = ENOMEM;
3620 goto out;
3621 }
3622 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3623 }
3624
3625 /* re-setup the request's command (since we never release it) XXX overkill*/
3626 ciss_preen_command(cr);
3627
3628 /* (re)build the notify event command */
3629 cc = cr->cr_cc;
3630 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3631 cc->header.address.physical.bus = 0;
3632 cc->header.address.physical.target = 0;
3633
3634 cc->cdb.cdb_length = sizeof(*cnc);
3635 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3636 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3637 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3638 cc->cdb.timeout = 0; /* no timeout, we hope */
3639
3640 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3641 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE);
3642 cnc->opcode = CISS_OPCODE_READ;
3643 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT;
3644 cnc->timeout = 0; /* no timeout, we hope */
3645 cnc->synchronous = 0;
3646 cnc->ordered = 0;
3647 cnc->seek_to_oldest = 0;
3648 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0)
3649 cnc->new_only = 1;
3650 else
3651 cnc->new_only = 0;
3652 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3653
3654 /* submit the request */
3655 error = ciss_start(cr);
3656
3657 out:
3658 if (error) {
3659 if (cr != NULL) {
3660 if (cr->cr_data != NULL)
3661 free(cr->cr_data, CISS_MALLOC_CLASS);
3662 ciss_release_request(cr);
3663 }
3664 sc->ciss_periodic_notify = NULL;
3665 debug(0, "can't submit notify event request");
3666 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3667 } else {
3668 debug(1, "notify event submitted");
3669 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK;
3670 }
3671 }
3672
3673 static void
3674 ciss_notify_complete(struct ciss_request *cr)
3675 {
3676 struct ciss_command *cc;
3677 struct ciss_notify *cn;
3678 struct ciss_softc *sc;
3679 int scsi_status;
3680 int command_status;
3681 debug_called(1);
3682
3683 cc = cr->cr_cc;
3684 cn = (struct ciss_notify *)cr->cr_data;
3685 sc = cr->cr_sc;
3686
3687 /*
3688 * Report request results, decode status.
3689 */
3690 ciss_report_request(cr, &command_status, &scsi_status);
3691
3692 /*
3693 * Abort the chain on a fatal error.
3694 *
3695 * XXX which of these are actually errors?
3696 */
3697 if ((command_status != CISS_CMD_STATUS_SUCCESS) &&
3698 (command_status != CISS_CMD_STATUS_TARGET_STATUS) &&
3699 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */
3700 ciss_printf(sc, "fatal error in Notify Event request (%s)\n",
3701 ciss_name_command_status(command_status));
3702 ciss_release_request(cr);
3703 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3704 return;
3705 }
3706
3707 /*
3708 * If the adapter gave us a text message, print it.
3709 */
3710 if (cn->message[0] != 0)
3711 ciss_printf(sc, "*** %.80s\n", cn->message);
3712
3713 debug(0, "notify event class %d subclass %d detail %d",
3714 cn->class, cn->subclass, cn->detail);
3715
3716 /*
3717 * If the response indicates that the notifier has been aborted,
3718 * release the notifier command.
3719 */
3720 if ((cn->class == CISS_NOTIFY_NOTIFIER) &&
3721 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) &&
3722 (cn->detail == 1)) {
3723 debug(0, "notifier exiting");
3724 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3725 ciss_release_request(cr);
3726 sc->ciss_periodic_notify = NULL;
3727 wakeup(&sc->ciss_periodic_notify);
3728 } else {
3729 /* Handle notify events in a kernel thread */
3730 ciss_enqueue_notify(cr);
3731 sc->ciss_periodic_notify = NULL;
3732 wakeup(&sc->ciss_periodic_notify);
3733 wakeup(&sc->ciss_notify);
3734 }
3735 /*
3736 * Send a new notify event command, if we're not aborting.
3737 */
3738 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) {
3739 ciss_notify_event(sc);
3740 }
3741 }
3742
3743 /************************************************************************
3744 * Abort the Notify Event chain.
3745 *
3746 * Note that we can't just abort the command in progress; we have to
3747 * explicitly issue an Abort Notify Event command in order for the
3748 * adapter to clean up correctly.
3749 *
3750 * If we are called with CISS_FLAG_ABORTING set in the adapter softc,
3751 * the chain will not restart itself.
3752 */
3753 static int
3754 ciss_notify_abort(struct ciss_softc *sc)
3755 {
3756 struct ciss_request *cr;
3757 struct ciss_command *cc;
3758 struct ciss_notify_cdb *cnc;
3759 int error, command_status, scsi_status;
3760
3761 debug_called(1);
3762
3763 cr = NULL;
3764 error = 0;
3765
3766 /* verify that there's an outstanding command */
3767 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3768 goto out;
3769
3770 /* get a command to issue the abort with */
3771 if ((error = ciss_get_request(sc, &cr)))
3772 goto out;
3773
3774 /* get a buffer for the result */
3775 if ((cr->cr_data = malloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_NOWAIT)) == NULL) {
3776 debug(0, "can't get notify event request buffer");
3777 error = ENOMEM;
3778 goto out;
3779 }
3780 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3781
3782 /* build the CDB */
3783 cc = cr->cr_cc;
3784 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3785 cc->header.address.physical.bus = 0;
3786 cc->header.address.physical.target = 0;
3787 cc->cdb.cdb_length = sizeof(*cnc);
3788 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3789 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3790 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3791 cc->cdb.timeout = 0; /* no timeout, we hope */
3792
3793 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3794 bzero(cnc, sizeof(*cnc));
3795 cnc->opcode = CISS_OPCODE_WRITE;
3796 cnc->command = CISS_COMMAND_ABORT_NOTIFY;
3797 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3798
3799 ciss_print_request(cr);
3800
3801 /*
3802 * Submit the request and wait for it to complete.
3803 */
3804 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3805 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error);
3806 goto out;
3807 }
3808
3809 /*
3810 * Check response.
3811 */
3812 ciss_report_request(cr, &command_status, &scsi_status);
3813 switch(command_status) {
3814 case CISS_CMD_STATUS_SUCCESS:
3815 break;
3816 case CISS_CMD_STATUS_INVALID_COMMAND:
3817 /*
3818 * Some older adapters don't support the CISS version of this
3819 * command. Fall back to using the BMIC version.
3820 */
3821 error = ciss_notify_abort_bmic(sc);
3822 if (error != 0)
3823 goto out;
3824 break;
3825
3826 case CISS_CMD_STATUS_TARGET_STATUS:
3827 /*
3828 * This can happen if the adapter thinks there wasn't an outstanding
3829 * Notify Event command but we did. We clean up here.
3830 */
3831 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) {
3832 if (sc->ciss_periodic_notify != NULL)
3833 ciss_release_request(sc->ciss_periodic_notify);
3834 error = 0;
3835 goto out;
3836 }
3837 /* FALLTHROUGH */
3838
3839 default:
3840 ciss_printf(sc, "Abort Notify Event command failed (%s)\n",
3841 ciss_name_command_status(command_status));
3842 error = EIO;
3843 goto out;
3844 }
3845
3846 /*
3847 * Sleep waiting for the notifier command to complete. Note
3848 * that if it doesn't, we may end up in a bad situation, since
3849 * the adapter may deliver it later. Also note that the adapter
3850 * requires the Notify Event command to be cancelled in order to
3851 * maintain internal bookkeeping.
3852 */
3853 while (sc->ciss_periodic_notify != NULL) {
3854 error = msleep(&sc->ciss_periodic_notify, &sc->ciss_mtx, PRIBIO, "cissNEA", hz * 5);
3855 if (error == EWOULDBLOCK) {
3856 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n");
3857 break;
3858 }
3859 }
3860
3861 out:
3862 /* release the cancel request */
3863 if (cr != NULL) {
3864 if (cr->cr_data != NULL)
3865 free(cr->cr_data, CISS_MALLOC_CLASS);
3866 ciss_release_request(cr);
3867 }
3868 if (error == 0)
3869 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3870 return(error);
3871 }
3872
3873 /************************************************************************
3874 * Abort the Notify Event chain using a BMIC command.
3875 */
3876 static int
3877 ciss_notify_abort_bmic(struct ciss_softc *sc)
3878 {
3879 struct ciss_request *cr;
3880 int error, command_status;
3881
3882 debug_called(1);
3883
3884 cr = NULL;
3885 error = 0;
3886
3887 /* verify that there's an outstanding command */
3888 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3889 goto out;
3890
3891 /*
3892 * Build a BMIC command to cancel the Notify on Event command.
3893 *
3894 * Note that we are sending a CISS opcode here. Odd.
3895 */
3896 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY,
3897 NULL, 0)) != 0)
3898 goto out;
3899
3900 /*
3901 * Submit the request and wait for it to complete.
3902 */
3903 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3904 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error);
3905 goto out;
3906 }
3907
3908 /*
3909 * Check response.
3910 */
3911 ciss_report_request(cr, &command_status, NULL);
3912 switch(command_status) {
3913 case CISS_CMD_STATUS_SUCCESS:
3914 break;
3915 default:
3916 ciss_printf(sc, "error cancelling Notify on Event (%s)\n",
3917 ciss_name_command_status(command_status));
3918 error = EIO;
3919 goto out;
3920 }
3921
3922 out:
3923 if (cr != NULL)
3924 ciss_release_request(cr);
3925 return(error);
3926 }
3927
3928 /************************************************************************
3929 * Handle rescanning all the logical volumes when a notify event
3930 * causes the drives to come online or offline.
3931 */
3932 static void
3933 ciss_notify_rescan_logical(struct ciss_softc *sc)
3934 {
3935 struct ciss_lun_report *cll;
3936 struct ciss_ldrive *ld;
3937 int i, j, ndrives;
3938
3939 /*
3940 * We must rescan all logical volumes to get the right logical
3941 * drive address.
3942 */
3943 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
3944 sc->ciss_cfg->max_logical_supported);
3945 if (cll == NULL)
3946 return;
3947
3948 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
3949
3950 /*
3951 * Delete any of the drives which were destroyed by the
3952 * firmware.
3953 */
3954 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
3955 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
3956 ld = &sc->ciss_logical[i][j];
3957
3958 if (ld->cl_update == 0)
3959 continue;
3960
3961 if (ld->cl_status != CISS_LD_ONLINE) {
3962 ciss_cam_rescan_target(sc, i, j);
3963 ld->cl_update = 0;
3964 if (ld->cl_ldrive)
3965 free(ld->cl_ldrive, CISS_MALLOC_CLASS);
3966 if (ld->cl_lstatus)
3967 free(ld->cl_lstatus, CISS_MALLOC_CLASS);
3968
3969 ld->cl_ldrive = NULL;
3970 ld->cl_lstatus = NULL;
3971 }
3972 }
3973 }
3974
3975 /*
3976 * Scan for new drives.
3977 */
3978 for (i = 0; i < ndrives; i++) {
3979 int bus, target;
3980
3981 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
3982 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
3983 ld = &sc->ciss_logical[bus][target];
3984
3985 if (ld->cl_update == 0)
3986 continue;
3987
3988 ld->cl_update = 0;
3989 ld->cl_address = cll->lun[i];
3990 ld->cl_controller = &sc->ciss_controllers[bus];
3991 if (ciss_identify_logical(sc, ld) == 0) {
3992 ciss_cam_rescan_target(sc, bus, target);
3993 }
3994 }
3995 free(cll, CISS_MALLOC_CLASS);
3996 }
3997
3998 /************************************************************************
3999 * Handle a notify event relating to the status of a logical drive.
4000 *
4001 * XXX need to be able to defer some of these to properly handle
4002 * calling the "ID Physical drive" command, unless the 'extended'
4003 * drive IDs are always in BIG_MAP format.
4004 */
4005 static void
4006 ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn)
4007 {
4008 struct ciss_ldrive *ld;
4009 int bus, target;
4010 int rescan_ld;
4011
4012 debug_called(2);
4013
4014 bus = cn->device.physical.bus;
4015 target = cn->data.logical_status.logical_drive;
4016 ld = &sc->ciss_logical[bus][target];
4017
4018 switch (cn->subclass) {
4019 case CISS_NOTIFY_LOGICAL_STATUS:
4020 switch (cn->detail) {
4021 case 0:
4022 ciss_name_device(sc, bus, target);
4023 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n",
4024 cn->data.logical_status.logical_drive, ld->cl_name,
4025 ciss_name_ldrive_status(cn->data.logical_status.previous_state),
4026 ciss_name_ldrive_status(cn->data.logical_status.new_state),
4027 cn->data.logical_status.spare_state,
4028 "\2\1configured\2rebuilding\3failed\4in use\5available\n");
4029
4030 /*
4031 * Update our idea of the drive's status.
4032 */
4033 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
4034 if (ld->cl_lstatus != NULL)
4035 ld->cl_lstatus->status = cn->data.logical_status.new_state;
4036
4037 /*
4038 * Have CAM rescan the drive if its status has changed.
4039 */
4040 rescan_ld = (cn->data.logical_status.previous_state !=
4041 cn->data.logical_status.new_state) ? 1 : 0;
4042 if (rescan_ld) {
4043 ld->cl_update = 1;
4044 ciss_notify_rescan_logical(sc);
4045 }
4046
4047 break;
4048
4049 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */
4050 ciss_name_device(sc, bus, target);
4051 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n",
4052 cn->data.logical_status.logical_drive, ld->cl_name);
4053 ciss_accept_media(sc, ld);
4054
4055 ld->cl_update = 1;
4056 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
4057 ciss_notify_rescan_logical(sc);
4058 break;
4059
4060 case 2:
4061 case 3:
4062 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n",
4063 cn->data.rebuild_aborted.logical_drive,
4064 ld->cl_name,
4065 (cn->detail == 2) ? "read" : "write");
4066 break;
4067 }
4068 break;
4069
4070 case CISS_NOTIFY_LOGICAL_ERROR:
4071 if (cn->detail == 0) {
4072 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n",
4073 cn->data.io_error.logical_drive,
4074 ld->cl_name,
4075 cn->data.io_error.failure_bus,
4076 cn->data.io_error.failure_drive);
4077 /* XXX should we take the drive down at this point, or will we be told? */
4078 }
4079 break;
4080
4081 case CISS_NOTIFY_LOGICAL_SURFACE:
4082 if (cn->detail == 0)
4083 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n",
4084 cn->data.consistency_completed.logical_drive,
4085 ld->cl_name);
4086 break;
4087 }
4088 }
4089
4090 /************************************************************************
4091 * Handle a notify event relating to the status of a physical drive.
4092 */
4093 static void
4094 ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn)
4095 {
4096 }
4097
4098 /************************************************************************
4099 * Handle a notify event relating to the status of a physical drive.
4100 */
4101 static void
4102 ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn)
4103 {
4104 struct ciss_lun_report *cll = NULL;
4105 int bus, target;
4106
4107 switch (cn->subclass) {
4108 case CISS_NOTIFY_HOTPLUG_PHYSICAL:
4109 case CISS_NOTIFY_HOTPLUG_NONDISK:
4110 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number);
4111 target =
4112 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number);
4113
4114 if (cn->detail == 0) {
4115 /*
4116 * Mark the device offline so that it'll start producing selection
4117 * timeouts to the upper layer.
4118 */
4119 if ((bus >= 0) && (target >= 0))
4120 sc->ciss_physical[bus][target].cp_online = 0;
4121 } else {
4122 /*
4123 * Rescan the physical lun list for new items
4124 */
4125 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
4126 sc->ciss_cfg->max_physical_supported);
4127 if (cll == NULL) {
4128 ciss_printf(sc, "Warning, cannot get physical lun list\n");
4129 break;
4130 }
4131 ciss_filter_physical(sc, cll);
4132 }
4133 break;
4134
4135 default:
4136 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass);
4137 return;
4138 }
4139
4140 if (cll != NULL)
4141 free(cll, CISS_MALLOC_CLASS);
4142 }
4143
4144 /************************************************************************
4145 * Handle deferred processing of notify events. Notify events may need
4146 * sleep which is unsafe during an interrupt.
4147 */
4148 static void
4149 ciss_notify_thread(void *arg)
4150 {
4151 struct ciss_softc *sc;
4152 struct ciss_request *cr;
4153 struct ciss_notify *cn;
4154
4155 sc = (struct ciss_softc *)arg;
4156 #if __FreeBSD_version >= 500000
4157 mtx_lock(&sc->ciss_mtx);
4158 #endif
4159
4160 for (;;) {
4161 if (STAILQ_EMPTY(&sc->ciss_notify) != 0 &&
4162 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) {
4163 msleep(&sc->ciss_notify, &sc->ciss_mtx, PUSER, "idle", 0);
4164 }
4165
4166 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT)
4167 break;
4168
4169 cr = ciss_dequeue_notify(sc);
4170
4171 if (cr == NULL)
4172 panic("cr null");
4173 cn = (struct ciss_notify *)cr->cr_data;
4174
4175 switch (cn->class) {
4176 case CISS_NOTIFY_HOTPLUG:
4177 ciss_notify_hotplug(sc, cn);
4178 break;
4179 case CISS_NOTIFY_LOGICAL:
4180 ciss_notify_logical(sc, cn);
4181 break;
4182 case CISS_NOTIFY_PHYSICAL:
4183 ciss_notify_physical(sc, cn);
4184 break;
4185 }
4186
4187 ciss_release_request(cr);
4188
4189 }
4190 sc->ciss_notify_thread = NULL;
4191 wakeup(&sc->ciss_notify_thread);
4192
4193 #if __FreeBSD_version >= 500000
4194 mtx_unlock(&sc->ciss_mtx);
4195 #endif
4196 kproc_exit(0);
4197 }
4198
4199 /************************************************************************
4200 * Start the notification kernel thread.
4201 */
4202 static void
4203 ciss_spawn_notify_thread(struct ciss_softc *sc)
4204 {
4205
4206 #if __FreeBSD_version > 500005
4207 if (kproc_create((void(*)(void *))ciss_notify_thread, sc,
4208 &sc->ciss_notify_thread, 0, 0, "ciss_notify%d",
4209 device_get_unit(sc->ciss_dev)))
4210 #else
4211 if (kproc_create((void(*)(void *))ciss_notify_thread, sc,
4212 &sc->ciss_notify_thread, "ciss_notify%d",
4213 device_get_unit(sc->ciss_dev)))
4214 #endif
4215 panic("Could not create notify thread\n");
4216 }
4217
4218 /************************************************************************
4219 * Kill the notification kernel thread.
4220 */
4221 static void
4222 ciss_kill_notify_thread(struct ciss_softc *sc)
4223 {
4224
4225 if (sc->ciss_notify_thread == NULL)
4226 return;
4227
4228 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT;
4229 wakeup(&sc->ciss_notify);
4230 msleep(&sc->ciss_notify_thread, &sc->ciss_mtx, PUSER, "thtrm", 0);
4231 }
4232
4233 /************************************************************************
4234 * Print a request.
4235 */
4236 static void
4237 ciss_print_request(struct ciss_request *cr)
4238 {
4239 struct ciss_softc *sc;
4240 struct ciss_command *cc;
4241 int i;
4242
4243 sc = cr->cr_sc;
4244 cc = cr->cr_cc;
4245
4246 ciss_printf(sc, "REQUEST @ %p\n", cr);
4247 ciss_printf(sc, " data %p/%d tag %d flags %b\n",
4248 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags,
4249 "\2\1mapped\2sleep\3poll\4dataout\5datain\n");
4250 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n",
4251 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag);
4252 switch(cc->header.address.mode.mode) {
4253 case CISS_HDR_ADDRESS_MODE_PERIPHERAL:
4254 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL:
4255 ciss_printf(sc, " physical bus %d target %d\n",
4256 cc->header.address.physical.bus, cc->header.address.physical.target);
4257 break;
4258 case CISS_HDR_ADDRESS_MODE_LOGICAL:
4259 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun);
4260 break;
4261 }
4262 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n",
4263 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" :
4264 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" :
4265 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??",
4266 cc->cdb.cdb_length,
4267 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" :
4268 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??",
4269 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" :
4270 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" :
4271 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" :
4272 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" :
4273 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??");
4274 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " ");
4275
4276 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) {
4277 /* XXX print error info */
4278 } else {
4279 /* since we don't use chained s/g, don't support it here */
4280 for (i = 0; i < cc->header.sg_in_list; i++) {
4281 if ((i % 4) == 0)
4282 ciss_printf(sc, " ");
4283 printf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length);
4284 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1)))
4285 printf("\n");
4286 }
4287 }
4288 }
4289
4290 /************************************************************************
4291 * Print information about the status of a logical drive.
4292 */
4293 static void
4294 ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld)
4295 {
4296 int bus, target, i;
4297
4298 if (ld->cl_lstatus == NULL) {
4299 printf("does not exist\n");
4300 return;
4301 }
4302
4303 /* print drive status */
4304 switch(ld->cl_lstatus->status) {
4305 case CISS_LSTATUS_OK:
4306 printf("online\n");
4307 break;
4308 case CISS_LSTATUS_INTERIM_RECOVERY:
4309 printf("in interim recovery mode\n");
4310 break;
4311 case CISS_LSTATUS_READY_RECOVERY:
4312 printf("ready to begin recovery\n");
4313 break;
4314 case CISS_LSTATUS_RECOVERING:
4315 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4316 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
4317 printf("being recovered, working on physical drive %d.%d, %u blocks remaining\n",
4318 bus, target, ld->cl_lstatus->blocks_to_recover);
4319 break;
4320 case CISS_LSTATUS_EXPANDING:
4321 printf("being expanded, %u blocks remaining\n",
4322 ld->cl_lstatus->blocks_to_recover);
4323 break;
4324 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4325 printf("queued for expansion\n");
4326 break;
4327 case CISS_LSTATUS_FAILED:
4328 printf("queued for expansion\n");
4329 break;
4330 case CISS_LSTATUS_WRONG_PDRIVE:
4331 printf("wrong physical drive inserted\n");
4332 break;
4333 case CISS_LSTATUS_MISSING_PDRIVE:
4334 printf("missing a needed physical drive\n");
4335 break;
4336 case CISS_LSTATUS_BECOMING_READY:
4337 printf("becoming ready\n");
4338 break;
4339 }
4340
4341 /* print failed physical drives */
4342 for (i = 0; i < CISS_BIG_MAP_ENTRIES / 8; i++) {
4343 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_failure_map[i]);
4344 target = CISS_BIG_MAP_TARGET(sc, ld->cl_lstatus->drive_failure_map[i]);
4345 if (bus == -1)
4346 continue;
4347 ciss_printf(sc, "physical drive %d:%d (%x) failed\n", bus, target,
4348 ld->cl_lstatus->drive_failure_map[i]);
4349 }
4350 }
4351
4352 #ifdef CISS_DEBUG
4353 #include "opt_ddb.h"
4354 #ifdef DDB
4355 #include <ddb/ddb.h>
4356 /************************************************************************
4357 * Print information about the controller/driver.
4358 */
4359 static void
4360 ciss_print_adapter(struct ciss_softc *sc)
4361 {
4362 int i, j;
4363
4364 ciss_printf(sc, "ADAPTER:\n");
4365 for (i = 0; i < CISSQ_COUNT; i++) {
4366 ciss_printf(sc, "%s %d/%d\n",
4367 i == 0 ? "free" :
4368 i == 1 ? "busy" : "complete",
4369 sc->ciss_qstat[i].q_length,
4370 sc->ciss_qstat[i].q_max);
4371 }
4372 ciss_printf(sc, "max_requests %d\n", sc->ciss_max_requests);
4373 ciss_printf(sc, "flags %b\n", sc->ciss_flags,
4374 "\2\1notify_ok\2control_open\3aborting\4running\21fake_synch\22bmic_abort\n");
4375
4376 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
4377 for (j = 0; j < sc->ciss_cfg->max_logical_supported; j++) {
4378 ciss_printf(sc, "LOGICAL DRIVE %d: ", i);
4379 ciss_print_ldrive(sc, &sc->ciss_logical[i][j]);
4380 }
4381 }
4382
4383 /* XXX Should physical drives be printed out here? */
4384
4385 for (i = 1; i < sc->ciss_max_requests; i++)
4386 ciss_print_request(sc->ciss_request + i);
4387 }
4388
4389 /* DDB hook */
4390 DB_COMMAND(ciss_prt, db_ciss_prt)
4391 {
4392 struct ciss_softc *sc;
4393
4394 sc = devclass_get_softc(devclass_find("ciss"), 0);
4395 if (sc == NULL) {
4396 printf("no ciss controllers\n");
4397 } else {
4398 ciss_print_adapter(sc);
4399 }
4400 }
4401 #endif
4402 #endif
4403
4404 /************************************************************************
4405 * Return a name for a logical drive status value.
4406 */
4407 static const char *
4408 ciss_name_ldrive_status(int status)
4409 {
4410 switch (status) {
4411 case CISS_LSTATUS_OK:
4412 return("OK");
4413 case CISS_LSTATUS_FAILED:
4414 return("failed");
4415 case CISS_LSTATUS_NOT_CONFIGURED:
4416 return("not configured");
4417 case CISS_LSTATUS_INTERIM_RECOVERY:
4418 return("interim recovery");
4419 case CISS_LSTATUS_READY_RECOVERY:
4420 return("ready for recovery");
4421 case CISS_LSTATUS_RECOVERING:
4422 return("recovering");
4423 case CISS_LSTATUS_WRONG_PDRIVE:
4424 return("wrong physical drive inserted");
4425 case CISS_LSTATUS_MISSING_PDRIVE:
4426 return("missing physical drive");
4427 case CISS_LSTATUS_EXPANDING:
4428 return("expanding");
4429 case CISS_LSTATUS_BECOMING_READY:
4430 return("becoming ready");
4431 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4432 return("queued for expansion");
4433 }
4434 return("unknown status");
4435 }
4436
4437 /************************************************************************
4438 * Return an online/offline/nonexistent value for a logical drive
4439 * status value.
4440 */
4441 static int
4442 ciss_decode_ldrive_status(int status)
4443 {
4444 switch(status) {
4445 case CISS_LSTATUS_NOT_CONFIGURED:
4446 return(CISS_LD_NONEXISTENT);
4447
4448 case CISS_LSTATUS_OK:
4449 case CISS_LSTATUS_INTERIM_RECOVERY:
4450 case CISS_LSTATUS_READY_RECOVERY:
4451 case CISS_LSTATUS_RECOVERING:
4452 case CISS_LSTATUS_EXPANDING:
4453 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
4454 return(CISS_LD_ONLINE);
4455
4456 case CISS_LSTATUS_FAILED:
4457 case CISS_LSTATUS_WRONG_PDRIVE:
4458 case CISS_LSTATUS_MISSING_PDRIVE:
4459 case CISS_LSTATUS_BECOMING_READY:
4460 default:
4461 return(CISS_LD_OFFLINE);
4462 }
4463 }
4464
4465
4466 /************************************************************************
4467 * Return a name for a logical drive's organisation.
4468 */
4469 static const char *
4470 ciss_name_ldrive_org(int org)
4471 {
4472 switch(org) {
4473 case CISS_LDRIVE_RAID0:
4474 return("RAID 0");
4475 case CISS_LDRIVE_RAID1:
4476 return("RAID 1(1+0)");
4477 case CISS_LDRIVE_RAID4:
4478 return("RAID 4");
4479 case CISS_LDRIVE_RAID5:
4480 return("RAID 5");
4481 case CISS_LDRIVE_RAID51:
4482 return("RAID 5+1");
4483 case CISS_LDRIVE_RAIDADG:
4484 return("RAID ADG");
4485 }
4486 return("unkown");
4487 }
4488
4489 /************************************************************************
4490 * Return a name for a command status value.
4491 */
4492 static const char *
4493 ciss_name_command_status(int status)
4494 {
4495 switch(status) {
4496 case CISS_CMD_STATUS_SUCCESS:
4497 return("success");
4498 case CISS_CMD_STATUS_TARGET_STATUS:
4499 return("target status");
4500 case CISS_CMD_STATUS_DATA_UNDERRUN:
4501 return("data underrun");
4502 case CISS_CMD_STATUS_DATA_OVERRUN:
4503 return("data overrun");
4504 case CISS_CMD_STATUS_INVALID_COMMAND:
4505 return("invalid command");
4506 case CISS_CMD_STATUS_PROTOCOL_ERROR:
4507 return("protocol error");
4508 case CISS_CMD_STATUS_HARDWARE_ERROR:
4509 return("hardware error");
4510 case CISS_CMD_STATUS_CONNECTION_LOST:
4511 return("connection lost");
4512 case CISS_CMD_STATUS_ABORTED:
4513 return("aborted");
4514 case CISS_CMD_STATUS_ABORT_FAILED:
4515 return("abort failed");
4516 case CISS_CMD_STATUS_UNSOLICITED_ABORT:
4517 return("unsolicited abort");
4518 case CISS_CMD_STATUS_TIMEOUT:
4519 return("timeout");
4520 case CISS_CMD_STATUS_UNABORTABLE:
4521 return("unabortable");
4522 }
4523 return("unknown status");
4524 }
4525
4526 /************************************************************************
4527 * Handle an open on the control device.
4528 */
4529 static int
4530 ciss_open(struct cdev *dev, int flags, int fmt, struct thread *p)
4531 {
4532 struct ciss_softc *sc;
4533
4534 debug_called(1);
4535
4536 sc = (struct ciss_softc *)dev->si_drv1;
4537
4538 /* we might want to veto if someone already has us open */
4539
4540 mtx_lock(&sc->ciss_mtx);
4541 sc->ciss_flags |= CISS_FLAG_CONTROL_OPEN;
4542 mtx_unlock(&sc->ciss_mtx);
4543 return(0);
4544 }
4545
4546 /************************************************************************
4547 * Handle the last close on the control device.
4548 */
4549 static int
4550 ciss_close(struct cdev *dev, int flags, int fmt, struct thread *p)
4551 {
4552 struct ciss_softc *sc;
4553
4554 debug_called(1);
4555
4556 sc = (struct ciss_softc *)dev->si_drv1;
4557
4558 mtx_lock(&sc->ciss_mtx);
4559 sc->ciss_flags &= ~CISS_FLAG_CONTROL_OPEN;
4560 mtx_unlock(&sc->ciss_mtx);
4561 return (0);
4562 }
4563
4564 /********************************************************************************
4565 * Handle adapter-specific control operations.
4566 *
4567 * Note that the API here is compatible with the Linux driver, in order to
4568 * simplify the porting of Compaq's userland tools.
4569 */
4570 static int
4571 ciss_ioctl(struct cdev *dev, u_long cmd, caddr_t addr, int32_t flag, struct thread *p)
4572 {
4573 struct ciss_softc *sc;
4574 IOCTL_Command_struct *ioc = (IOCTL_Command_struct *)addr;
4575 #ifdef __amd64__
4576 IOCTL_Command_struct32 *ioc32 = (IOCTL_Command_struct32 *)addr;
4577 IOCTL_Command_struct ioc_swab;
4578 #endif
4579 int error;
4580
4581 debug_called(1);
4582
4583 sc = (struct ciss_softc *)dev->si_drv1;
4584 error = 0;
4585 mtx_lock(&sc->ciss_mtx);
4586
4587 switch(cmd) {
4588 case CCISS_GETQSTATS:
4589 {
4590 union ciss_statrequest *cr = (union ciss_statrequest *)addr;
4591
4592 switch (cr->cs_item) {
4593 case CISSQ_FREE:
4594 case CISSQ_NOTIFY:
4595 bcopy(&sc->ciss_qstat[cr->cs_item], &cr->cs_qstat,
4596 sizeof(struct ciss_qstat));
4597 break;
4598 default:
4599 error = ENOIOCTL;
4600 break;
4601 }
4602
4603 break;
4604 }
4605
4606 case CCISS_GETPCIINFO:
4607 {
4608 cciss_pci_info_struct *pis = (cciss_pci_info_struct *)addr;
4609
4610 pis->bus = pci_get_bus(sc->ciss_dev);
4611 pis->dev_fn = pci_get_slot(sc->ciss_dev);
4612 pis->board_id = (pci_get_subvendor(sc->ciss_dev) << 16) |
4613 pci_get_subdevice(sc->ciss_dev);
4614
4615 break;
4616 }
4617
4618 case CCISS_GETINTINFO:
4619 {
4620 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr;
4621
4622 cis->delay = sc->ciss_cfg->interrupt_coalesce_delay;
4623 cis->count = sc->ciss_cfg->interrupt_coalesce_count;
4624
4625 break;
4626 }
4627
4628 case CCISS_SETINTINFO:
4629 {
4630 cciss_coalint_struct *cis = (cciss_coalint_struct *)addr;
4631
4632 if ((cis->delay == 0) && (cis->count == 0)) {
4633 error = EINVAL;
4634 break;
4635 }
4636
4637 /*
4638 * XXX apparently this is only safe if the controller is idle,
4639 * we should suspend it before doing this.
4640 */
4641 sc->ciss_cfg->interrupt_coalesce_delay = cis->delay;
4642 sc->ciss_cfg->interrupt_coalesce_count = cis->count;
4643
4644 if (ciss_update_config(sc))
4645 error = EIO;
4646
4647 /* XXX resume the controller here */
4648 break;
4649 }
4650
4651 case CCISS_GETNODENAME:
4652 bcopy(sc->ciss_cfg->server_name, (NodeName_type *)addr,
4653 sizeof(NodeName_type));
4654 break;
4655
4656 case CCISS_SETNODENAME:
4657 bcopy((NodeName_type *)addr, sc->ciss_cfg->server_name,
4658 sizeof(NodeName_type));
4659 if (ciss_update_config(sc))
4660 error = EIO;
4661 break;
4662
4663 case CCISS_GETHEARTBEAT:
4664 *(Heartbeat_type *)addr = sc->ciss_cfg->heartbeat;
4665 break;
4666
4667 case CCISS_GETBUSTYPES:
4668 *(BusTypes_type *)addr = sc->ciss_cfg->bus_types;
4669 break;
4670
4671 case CCISS_GETFIRMVER:
4672 bcopy(sc->ciss_id->running_firmware_revision, (FirmwareVer_type *)addr,
4673 sizeof(FirmwareVer_type));
4674 break;
4675
4676 case CCISS_GETDRIVERVER:
4677 *(DriverVer_type *)addr = CISS_DRIVER_VERSION;
4678 break;
4679
4680 case CCISS_REVALIDVOLS:
4681 /*
4682 * This is a bit ugly; to do it "right" we really need
4683 * to find any disks that have changed, kick CAM off them,
4684 * then rescan only these disks. It'd be nice if they
4685 * a) told us which disk(s) they were going to play with,
4686 * and b) which ones had arrived. 8(
4687 */
4688 break;
4689
4690 #ifdef __amd64__
4691 case CCISS_PASSTHRU32:
4692 ioc_swab.LUN_info = ioc32->LUN_info;
4693 ioc_swab.Request = ioc32->Request;
4694 ioc_swab.error_info = ioc32->error_info;
4695 ioc_swab.buf_size = ioc32->buf_size;
4696 ioc_swab.buf = (u_int8_t *)(uintptr_t)ioc32->buf;
4697 ioc = &ioc_swab;
4698 /* FALLTHROUGH */
4699 #endif
4700
4701 case CCISS_PASSTHRU:
4702 error = ciss_user_command(sc, ioc);
4703 break;
4704
4705 default:
4706 debug(0, "unknown ioctl 0x%lx", cmd);
4707
4708 debug(1, "CCISS_GETPCIINFO: 0x%lx", CCISS_GETPCIINFO);
4709 debug(1, "CCISS_GETINTINFO: 0x%lx", CCISS_GETINTINFO);
4710 debug(1, "CCISS_SETINTINFO: 0x%lx", CCISS_SETINTINFO);
4711 debug(1, "CCISS_GETNODENAME: 0x%lx", CCISS_GETNODENAME);
4712 debug(1, "CCISS_SETNODENAME: 0x%lx", CCISS_SETNODENAME);
4713 debug(1, "CCISS_GETHEARTBEAT: 0x%lx", CCISS_GETHEARTBEAT);
4714 debug(1, "CCISS_GETBUSTYPES: 0x%lx", CCISS_GETBUSTYPES);
4715 debug(1, "CCISS_GETFIRMVER: 0x%lx", CCISS_GETFIRMVER);
4716 debug(1, "CCISS_GETDRIVERVER: 0x%lx", CCISS_GETDRIVERVER);
4717 debug(1, "CCISS_REVALIDVOLS: 0x%lx", CCISS_REVALIDVOLS);
4718 debug(1, "CCISS_PASSTHRU: 0x%lx", CCISS_PASSTHRU);
4719
4720 error = ENOIOCTL;
4721 break;
4722 }
4723
4724 mtx_unlock(&sc->ciss_mtx);
4725 return(error);
4726 }
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