DEVFS - remove dev_ops_add(), dev_ops_get(), and get_dev()
[dragonfly.git] / sys / dev / raid / ciss / ciss.c
CommitLineData
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1/*-
2 * Copyright (c) 2001 Michael Smith
9cf9a798 3 * Copyright (c) 2004 Paul Saab
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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 *
9cf9a798 27 * $FreeBSD: src/sys/dev/ciss/ciss.c,v 1.2.2.25 2008/06/10 18:51:05 ps Exp $
1c8b7a9a 28 * $DragonFly: src/sys/dev/raid/ciss/ciss.c,v 1.28 2008/05/18 20:30:23 pavalos Exp $
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29 */
30
31/*
32 * Common Interface for SCSI-3 Support driver.
33 *
34 * CISS claims to provide a common interface between a generic SCSI
35 * transport and an intelligent host adapter.
36 *
37 * This driver supports CISS as defined in the document "CISS Command
38 * Interface for SCSI-3 Support Open Specification", Version 1.04,
39 * Valence Number 1, dated 20001127, produced by Compaq Computer
40 * Corporation. This document appears to be a hastily and somewhat
41 * arbitrarlily cut-down version of a larger (and probably even more
42 * chaotic and inconsistent) Compaq internal document. Various
43 * details were also gleaned from Compaq's "cciss" driver for Linux.
44 *
45 * We provide a shim layer between the CISS interface and CAM,
46 * offloading most of the queueing and being-a-disk chores onto CAM.
47 * Entry to the driver is via the PCI bus attachment (ciss_probe,
48 * ciss_attach, etc) and via the CAM interface (ciss_cam_action,
49 * ciss_cam_poll). The Compaq CISS adapters are, however, poor SCSI
50 * citizens and we have to fake up some responses to get reasonable
51 * behaviour out of them. In addition, the CISS command set is by no
52 * means adequate to support the functionality of a RAID controller,
53 * and thus the supported Compaq adapters utilise portions of the
54 * control protocol from earlier Compaq adapter families.
55 *
56 * Note that we only support the "simple" transport layer over PCI.
57 * This interface (ab)uses the I2O register set (specifically the post
58 * queues) to exchange commands with the adapter. Other interfaces
59 * are available, but we aren't supposed to know about them, and it is
60 * dubious whether they would provide major performance improvements
61 * except under extreme load.
9cf9a798 62 *
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63 * Currently the only supported CISS adapters are the Compaq Smart
64 * Array 5* series (5300, 5i, 532). Even with only three adapters,
65 * Compaq still manage to have interface variations.
66 *
67 *
68 * Thanks must go to Fred Harris and Darryl DeVinney at Compaq, as
69 * well as Paul Saab at Yahoo! for their assistance in making this
70 * driver happen.
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71 *
72 * More thanks must go to John Cagle at HP for the countless hours
73 * spent making this driver "work" with the MSA* series storage
74 * enclosures. Without his help (and nagging), this driver could not
75 * be used with these enclosures.
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76 */
77
78#include <sys/param.h>
79#include <sys/systm.h>
fef8985e 80#include <sys/device.h>
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81#include <sys/malloc.h>
82#include <sys/kernel.h>
83#include <sys/bus.h>
84#include <sys/conf.h>
85#include <sys/devicestat.h>
86#include <sys/stat.h>
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87#include <sys/kthread.h>
88#include <sys/queue.h>
1f7ab7c9 89#include <sys/rman.h>
984263bc 90
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91#include <bus/cam/cam.h>
92#include <bus/cam/cam_ccb.h>
93#include <bus/cam/cam_periph.h>
94#include <bus/cam/cam_sim.h>
95#include <bus/cam/cam_xpt_sim.h>
96#include <bus/cam/scsi/scsi_all.h>
97#include <bus/cam/scsi/scsi_message.h>
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98
99#include <machine/clock.h>
984263bc 100#include <machine/endian.h>
984263bc 101
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102#include <bus/pci/pcireg.h>
103#include <bus/pci/pcivar.h>
984263bc 104
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105#include "cissreg.h"
106#include "cissvar.h"
107#include "cissio.h"
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108
109MALLOC_DEFINE(CISS_MALLOC_CLASS, "ciss_data", "ciss internal data buffers");
110
111/* pci interface */
112static int ciss_lookup(device_t dev);
113static int ciss_probe(device_t dev);
114static int ciss_attach(device_t dev);
115static int ciss_detach(device_t dev);
116static int ciss_shutdown(device_t dev);
117
118/* (de)initialisation functions, control wrappers */
119static int ciss_init_pci(struct ciss_softc *sc);
120static int ciss_wait_adapter(struct ciss_softc *sc);
121static int ciss_flush_adapter(struct ciss_softc *sc);
122static int ciss_init_requests(struct ciss_softc *sc);
123static void ciss_command_map_helper(void *arg, bus_dma_segment_t *segs,
124 int nseg, int error);
125static int ciss_identify_adapter(struct ciss_softc *sc);
126static int ciss_init_logical(struct ciss_softc *sc);
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127static int ciss_init_physical(struct ciss_softc *sc);
128static int ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll);
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129static int ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld);
130static int ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld);
131static int ciss_update_config(struct ciss_softc *sc);
9cf9a798 132static int ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld);
984263bc 133static void ciss_free(struct ciss_softc *sc);
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134static void ciss_spawn_notify_thread(struct ciss_softc *sc);
135static void ciss_kill_notify_thread(struct ciss_softc *sc);
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136
137/* request submission/completion */
138static int ciss_start(struct ciss_request *cr);
139static void ciss_done(struct ciss_softc *sc);
140static void ciss_intr(void *arg);
141static void ciss_complete(struct ciss_softc *sc);
142static int ciss_report_request(struct ciss_request *cr, int *command_status,
143 int *scsi_status);
144static int ciss_synch_request(struct ciss_request *cr, int timeout);
145static int ciss_poll_request(struct ciss_request *cr, int timeout);
146static int ciss_wait_request(struct ciss_request *cr, int timeout);
147#if 0
148static int ciss_abort_request(struct ciss_request *cr);
149#endif
150
151/* request queueing */
152static int ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp);
153static void ciss_preen_command(struct ciss_request *cr);
154static void ciss_release_request(struct ciss_request *cr);
155
156/* request helpers */
157static int ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
158 int opcode, void **bufp, size_t bufsize);
159static int ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc);
160
161/* DMA map/unmap */
162static int ciss_map_request(struct ciss_request *cr);
163static void ciss_request_map_helper(void *arg, bus_dma_segment_t *segs,
164 int nseg, int error);
165static void ciss_unmap_request(struct ciss_request *cr);
166
167/* CAM interface */
168static int ciss_cam_init(struct ciss_softc *sc);
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169static void ciss_cam_rescan_target(struct ciss_softc *sc,
170 int bus, int target);
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171static void ciss_cam_rescan_all(struct ciss_softc *sc);
172static void ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb);
173static void ciss_cam_action(struct cam_sim *sim, union ccb *ccb);
174static int ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio);
175static int ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio);
176static void ciss_cam_poll(struct cam_sim *sim);
177static void ciss_cam_complete(struct ciss_request *cr);
178static void ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio);
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179static struct cam_periph *ciss_find_periph(struct ciss_softc *sc,
180 int bus, int target);
181static int ciss_name_device(struct ciss_softc *sc, int bus, int target);
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182
183/* periodic status monitoring */
184static void ciss_periodic(void *arg);
185static void ciss_notify_event(struct ciss_softc *sc);
186static void ciss_notify_complete(struct ciss_request *cr);
187static int ciss_notify_abort(struct ciss_softc *sc);
188static int ciss_notify_abort_bmic(struct ciss_softc *sc);
9cf9a798 189static void ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn);
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190static void ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn);
191static void ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn);
192
193/* debugging output */
194static void ciss_print_request(struct ciss_request *cr);
195static void ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld);
196static const char *ciss_name_ldrive_status(int status);
197static int ciss_decode_ldrive_status(int status);
198static const char *ciss_name_ldrive_org(int org);
199static const char *ciss_name_command_status(int status);
200
201/*
202 * PCI bus interface.
203 */
204static device_method_t ciss_methods[] = {
205 /* Device interface */
206 DEVMETHOD(device_probe, ciss_probe),
207 DEVMETHOD(device_attach, ciss_attach),
208 DEVMETHOD(device_detach, ciss_detach),
209 DEVMETHOD(device_shutdown, ciss_shutdown),
210 { 0, 0 }
211};
212
213static driver_t ciss_pci_driver = {
214 "ciss",
215 ciss_methods,
216 sizeof(struct ciss_softc)
217};
218
219static devclass_t ciss_devclass;
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220
221DECLARE_DUMMY_MODULE(ciss);
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222DRIVER_MODULE(ciss, pci, ciss_pci_driver, ciss_devclass, 0, 0);
223
224/*
225 * Control device interface.
226 */
227static d_open_t ciss_open;
228static d_close_t ciss_close;
229static d_ioctl_t ciss_ioctl;
230
231#define CISS_CDEV_MAJOR 166
232
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233static struct dev_ops ciss_ops = {
234 { "ciss", CISS_CDEV_MAJOR, 0 },
235 .d_open = ciss_open,
236 .d_close = ciss_close,
237 .d_ioctl = ciss_ioctl
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238};
239
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240/*
241 * This tunable can be set at boot time and controls whether physical devices
242 * that are marked hidden by the firmware should be exposed anyways.
243 */
244static unsigned int ciss_expose_hidden_physical = 0;
245TUNABLE_INT("hw.ciss.expose_hidden_physical", &ciss_expose_hidden_physical);
246
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247/************************************************************************
248 * CISS adapters amazingly don't have a defined programming interface
249 * value. (One could say some very despairing things about PCI and
250 * people just not getting the general idea.) So we are forced to
251 * stick with matching against subvendor/subdevice, and thus have to
252 * be updated for every new CISS adapter that appears.
253 */
254#define CISS_BOARD_SA5 (1<<0)
255#define CISS_BOARD_SA5B (1<<1)
256
257static struct
258{
259 u_int16_t subvendor;
260 u_int16_t subdevice;
261 int flags;
262 char *desc;
263} ciss_vendor_data[] = {
264 { 0x0e11, 0x4070, CISS_BOARD_SA5, "Compaq Smart Array 5300" },
265 { 0x0e11, 0x4080, CISS_BOARD_SA5B, "Compaq Smart Array 5i" },
266 { 0x0e11, 0x4082, CISS_BOARD_SA5B, "Compaq Smart Array 532" },
267 { 0x0e11, 0x4083, CISS_BOARD_SA5B, "HP Smart Array 5312" },
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268 { 0x0e11, 0x4091, CISS_BOARD_SA5, "HP Smart Array 6i" },
269 { 0x0e11, 0x409A, CISS_BOARD_SA5, "HP Smart Array 641" },
270 { 0x0e11, 0x409B, CISS_BOARD_SA5, "HP Smart Array 642" },
271 { 0x0e11, 0x409C, CISS_BOARD_SA5, "HP Smart Array 6400" },
272 { 0x0e11, 0x409D, CISS_BOARD_SA5, "HP Smart Array 6400 EM" },
273 { 0x103C, 0x3211, CISS_BOARD_SA5, "HP Smart Array E200i" },
274 { 0x103C, 0x3212, CISS_BOARD_SA5, "HP Smart Array E200" },
275 { 0x103C, 0x3213, CISS_BOARD_SA5, "HP Smart Array E200i" },
276 { 0x103C, 0x3214, CISS_BOARD_SA5, "HP Smart Array E200i" },
277 { 0x103C, 0x3215, CISS_BOARD_SA5, "HP Smart Array E200i" },
278 { 0x103C, 0x3220, CISS_BOARD_SA5, "HP Smart Array" },
279 { 0x103C, 0x3222, CISS_BOARD_SA5, "HP Smart Array" },
280 { 0x103C, 0x3223, CISS_BOARD_SA5, "HP Smart Array P800" },
281 { 0x103C, 0x3225, CISS_BOARD_SA5, "HP Smart Array P600" },
282 { 0x103C, 0x3230, CISS_BOARD_SA5, "HP Smart Array" },
283 { 0x103C, 0x3231, CISS_BOARD_SA5, "HP Smart Array" },
284 { 0x103C, 0x3232, CISS_BOARD_SA5, "HP Smart Array" },
285 { 0x103C, 0x3233, CISS_BOARD_SA5, "HP Smart Array" },
286 { 0x103C, 0x3234, CISS_BOARD_SA5, "HP Smart Array P400" },
287 { 0x103C, 0x3235, CISS_BOARD_SA5, "HP Smart Array P400i" },
288 { 0x103C, 0x3236, CISS_BOARD_SA5, "HP Smart Array" },
289 { 0x103C, 0x3237, CISS_BOARD_SA5, "HP Smart Array" },
290 { 0x103C, 0x3238, CISS_BOARD_SA5, "HP Smart Array" },
291 { 0x103C, 0x3239, CISS_BOARD_SA5, "HP Smart Array" },
292 { 0x103C, 0x323A, CISS_BOARD_SA5, "HP Smart Array" },
293 { 0x103C, 0x323B, CISS_BOARD_SA5, "HP Smart Array" },
294 { 0x103C, 0x323C, CISS_BOARD_SA5, "HP Smart Array" },
295 { 0x103C, 0x3241, CISS_BOARD_SA5, "HP Smart Array P212" },
296 { 0x103C, 0x3243, CISS_BOARD_SA5, "HP Smart Array P410" },
297 { 0x103C, 0x3245, CISS_BOARD_SA5, "HP Smart Array P410i" },
298 { 0x103C, 0x3247, CISS_BOARD_SA5, "HP Smart Array P411" },
299 { 0x103C, 0x3249, CISS_BOARD_SA5, "HP Smart Array P812" },
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300 { 0, 0, 0, NULL }
301};
302
303/************************************************************************
304 * Find a match for the device in our list of known adapters.
305 */
306static int
307ciss_lookup(device_t dev)
308{
309 int i;
9cf9a798 310
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311 for (i = 0; ciss_vendor_data[i].desc != NULL; i++)
312 if ((pci_get_subvendor(dev) == ciss_vendor_data[i].subvendor) &&
313 (pci_get_subdevice(dev) == ciss_vendor_data[i].subdevice)) {
314 return(i);
315 }
316 return(-1);
317}
318
319/************************************************************************
320 * Match a known CISS adapter.
321 */
322static int
323ciss_probe(device_t dev)
324{
325 int i;
9cf9a798 326
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327 i = ciss_lookup(dev);
328 if (i != -1) {
329 device_set_desc(dev, ciss_vendor_data[i].desc);
330 return(-10);
331 }
332 return(ENOENT);
9cf9a798 333}
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334
335/************************************************************************
336 * Attach the driver to this adapter.
337 */
338static int
339ciss_attach(device_t dev)
340{
341 struct ciss_softc *sc;
342 int i, error;
343
344 debug_called(1);
345
346#ifdef CISS_DEBUG
347 /* print structure/union sizes */
348 debug_struct(ciss_command);
349 debug_struct(ciss_header);
350 debug_union(ciss_device_address);
351 debug_struct(ciss_cdb);
352 debug_struct(ciss_report_cdb);
353 debug_struct(ciss_notify_cdb);
354 debug_struct(ciss_notify);
355 debug_struct(ciss_message_cdb);
356 debug_struct(ciss_error_info_pointer);
357 debug_struct(ciss_error_info);
358 debug_struct(ciss_sg_entry);
359 debug_struct(ciss_config_table);
360 debug_struct(ciss_bmic_cdb);
361 debug_struct(ciss_bmic_id_ldrive);
362 debug_struct(ciss_bmic_id_lstatus);
363 debug_struct(ciss_bmic_id_table);
364 debug_struct(ciss_bmic_id_pdrive);
365 debug_struct(ciss_bmic_blink_pdrive);
366 debug_struct(ciss_bmic_flush_cache);
367 debug_const(CISS_MAX_REQUESTS);
368 debug_const(CISS_MAX_LOGICAL);
369 debug_const(CISS_INTERRUPT_COALESCE_DELAY);
370 debug_const(CISS_INTERRUPT_COALESCE_COUNT);
371 debug_const(CISS_COMMAND_ALLOC_SIZE);
372 debug_const(CISS_COMMAND_SG_LENGTH);
373
374 debug_type(cciss_pci_info_struct);
375 debug_type(cciss_coalint_struct);
376 debug_type(cciss_coalint_struct);
377 debug_type(NodeName_type);
378 debug_type(NodeName_type);
379 debug_type(Heartbeat_type);
380 debug_type(BusTypes_type);
381 debug_type(FirmwareVer_type);
382 debug_type(DriverVer_type);
383 debug_type(IOCTL_Command_struct);
384#endif
385
386 sc = device_get_softc(dev);
387 sc->ciss_dev = dev;
aa1ab3c5 388 callout_init(&sc->ciss_periodic);
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389
390 /*
391 * Work out adapter type.
392 */
393 i = ciss_lookup(dev);
394 if (ciss_vendor_data[i].flags & CISS_BOARD_SA5) {
395 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5;
396 } else if (ciss_vendor_data[i].flags & CISS_BOARD_SA5B) {
397 sc->ciss_interrupt_mask = CISS_TL_SIMPLE_INTR_OPQ_SA5B;
398 } else {
399 /* really an error on our part */
400 ciss_printf(sc, "unable to determine hardware type\n");
401 error = ENXIO;
402 goto out;
403 }
9cf9a798 404
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405 /*
406 * Do PCI-specific init.
407 */
408 if ((error = ciss_init_pci(sc)) != 0)
409 goto out;
410
411 /*
412 * Initialise driver queues.
413 */
414 ciss_initq_free(sc);
415 ciss_initq_busy(sc);
416 ciss_initq_complete(sc);
9cf9a798 417 ciss_initq_notify(sc);
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418
419 /*
420 * Initialise command/request pool.
421 */
422 if ((error = ciss_init_requests(sc)) != 0)
423 goto out;
424
425 /*
426 * Get adapter information.
427 */
428 if ((error = ciss_identify_adapter(sc)) != 0)
429 goto out;
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430
431 /*
432 * Find all the physical devices.
433 */
434 if ((error = ciss_init_physical(sc)) != 0)
435 goto out;
436
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437 /*
438 * Build our private table of logical devices.
439 */
440 if ((error = ciss_init_logical(sc)) != 0)
441 goto out;
442
443 /*
444 * Enable interrupts so that the CAM scan can complete.
445 */
446 CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc);
447
448 /*
449 * Initialise the CAM interface.
450 */
451 if ((error = ciss_cam_init(sc)) != 0)
452 goto out;
453
454 /*
455 * Start the heartbeat routine and event chain.
456 */
457 ciss_periodic(sc);
458
3e82b46c 459 /*
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460 * Create the control device.
461 */
fef8985e 462 sc->ciss_dev_t = make_dev(&ciss_ops, device_get_unit(sc->ciss_dev),
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463 UID_ROOT, GID_OPERATOR, S_IRUSR | S_IWUSR,
464 "ciss%d", device_get_unit(sc->ciss_dev));
465 sc->ciss_dev_t->si_drv1 = sc;
466
467 /*
468 * The adapter is running; synchronous commands can now sleep
469 * waiting for an interrupt to signal completion.
470 */
471 sc->ciss_flags |= CISS_FLAG_RUNNING;
472
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473 ciss_spawn_notify_thread(sc);
474
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475 error = 0;
476 out:
477 if (error != 0)
478 ciss_free(sc);
479 return(error);
480}
481
482/************************************************************************
483 * Detach the driver from this adapter.
484 */
485static int
486ciss_detach(device_t dev)
487{
488 struct ciss_softc *sc = device_get_softc(dev);
489
490 debug_called(1);
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491
492 if (sc->ciss_flags & CISS_FLAG_CONTROL_OPEN)
493 return (EBUSY);
494
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495 /* flush adapter cache */
496 ciss_flush_adapter(sc);
497
498 /* release all resources */
499 ciss_free(sc);
500
501 return(0);
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502}
503
504/************************************************************************
505 * Prepare adapter for system shutdown.
506 */
507static int
508ciss_shutdown(device_t dev)
509{
510 struct ciss_softc *sc = device_get_softc(dev);
511
512 debug_called(1);
513
514 /* flush adapter cache */
515 ciss_flush_adapter(sc);
516
517 return(0);
518}
519
520/************************************************************************
521 * Perform PCI-specific attachment actions.
522 */
523static int
524ciss_init_pci(struct ciss_softc *sc)
525{
526 uintptr_t cbase, csize, cofs;
527 int error;
528
529 debug_called(1);
530
531 /*
532 * Allocate register window first (we need this to find the config
533 * struct).
534 */
535 error = ENXIO;
536 sc->ciss_regs_rid = CISS_TL_SIMPLE_BAR_REGS;
537 if ((sc->ciss_regs_resource =
538 bus_alloc_resource(sc->ciss_dev, SYS_RES_MEMORY, &sc->ciss_regs_rid,
539 0, ~0, 1, RF_ACTIVE)) == NULL) {
540 ciss_printf(sc, "can't allocate register window\n");
541 return(ENXIO);
542 }
543 sc->ciss_regs_bhandle = rman_get_bushandle(sc->ciss_regs_resource);
544 sc->ciss_regs_btag = rman_get_bustag(sc->ciss_regs_resource);
9cf9a798 545
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546 /*
547 * Find the BAR holding the config structure. If it's not the one
548 * we already mapped for registers, map it too.
549 */
550 sc->ciss_cfg_rid = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_BAR) & 0xffff;
551 if (sc->ciss_cfg_rid != sc->ciss_regs_rid) {
552 if ((sc->ciss_cfg_resource =
553 bus_alloc_resource(sc->ciss_dev, SYS_RES_MEMORY, &sc->ciss_cfg_rid,
554 0, ~0, 1, RF_ACTIVE)) == NULL) {
555 ciss_printf(sc, "can't allocate config window\n");
556 return(ENXIO);
557 }
558 cbase = (uintptr_t)rman_get_virtual(sc->ciss_cfg_resource);
559 csize = rman_get_end(sc->ciss_cfg_resource) -
560 rman_get_start(sc->ciss_cfg_resource) + 1;
561 } else {
562 cbase = (uintptr_t)rman_get_virtual(sc->ciss_regs_resource);
563 csize = rman_get_end(sc->ciss_regs_resource) -
564 rman_get_start(sc->ciss_regs_resource) + 1;
565 }
566 cofs = CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_CFG_OFF);
9cf9a798 567
984263bc
MD
568 /*
569 * Use the base/size/offset values we just calculated to
570 * sanity-check the config structure. If it's OK, point to it.
571 */
572 if ((cofs + sizeof(struct ciss_config_table)) > csize) {
573 ciss_printf(sc, "config table outside window\n");
574 return(ENXIO);
575 }
576 sc->ciss_cfg = (struct ciss_config_table *)(cbase + cofs);
577 debug(1, "config struct at %p", sc->ciss_cfg);
9cf9a798 578
984263bc
MD
579 /*
580 * Validate the config structure. If we supported other transport
581 * methods, we could select amongst them at this point in time.
582 */
583 if (strncmp(sc->ciss_cfg->signature, "CISS", 4)) {
584 ciss_printf(sc, "config signature mismatch (got '%c%c%c%c')\n",
585 sc->ciss_cfg->signature[0], sc->ciss_cfg->signature[1],
586 sc->ciss_cfg->signature[2], sc->ciss_cfg->signature[3]);
587 return(ENXIO);
588 }
984263bc
MD
589
590 /*
591 * Put the board into simple mode, and tell it we're using the low
592 * 4GB of RAM. Set the default interrupt coalescing options.
593 */
594 if (!(sc->ciss_cfg->supported_methods & CISS_TRANSPORT_METHOD_SIMPLE)) {
595 ciss_printf(sc, "adapter does not support 'simple' transport layer\n");
596 return(ENXIO);
597 }
598 sc->ciss_cfg->requested_method = CISS_TRANSPORT_METHOD_SIMPLE;
599 sc->ciss_cfg->command_physlimit = 0;
600 sc->ciss_cfg->interrupt_coalesce_delay = CISS_INTERRUPT_COALESCE_DELAY;
601 sc->ciss_cfg->interrupt_coalesce_count = CISS_INTERRUPT_COALESCE_COUNT;
602
9cf9a798
SW
603#ifdef __i386__
604 sc->ciss_cfg->host_driver |= CISS_DRIVER_SCSI_PREFETCH;
605#endif
606
984263bc
MD
607 if (ciss_update_config(sc)) {
608 ciss_printf(sc, "adapter refuses to accept config update (IDBR 0x%x)\n",
609 CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR));
610 return(ENXIO);
611 }
612 if (!(sc->ciss_cfg->active_method != CISS_TRANSPORT_METHOD_SIMPLE)) {
613 ciss_printf(sc,
614 "adapter refuses to go into 'simple' transport mode (0x%x, 0x%x)\n",
615 sc->ciss_cfg->supported_methods, sc->ciss_cfg->active_method);
616 return(ENXIO);
617 }
618
619 /*
620 * Wait for the adapter to come ready.
621 */
622 if ((error = ciss_wait_adapter(sc)) != 0)
623 return(error);
624
625 /*
626 * Turn off interrupts before we go routing anything.
627 */
628 CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc);
9cf9a798 629
984263bc
MD
630 /*
631 * Allocate and set up our interrupt.
632 */
633 sc->ciss_irq_rid = 0;
634 if ((sc->ciss_irq_resource =
635 bus_alloc_resource(sc->ciss_dev, SYS_RES_IRQ, &sc->ciss_irq_rid, 0, ~0, 1,
636 RF_ACTIVE | RF_SHAREABLE)) == NULL) {
637 ciss_printf(sc, "can't allocate interrupt\n");
638 return(ENXIO);
639 }
e9cb6d99 640 error = bus_setup_intr(sc->ciss_dev, sc->ciss_irq_resource,
ee61f228 641 0, ciss_intr, sc,
e9cb6d99
MD
642 &sc->ciss_intr, NULL);
643 if (error) {
984263bc
MD
644 ciss_printf(sc, "can't set up interrupt\n");
645 return(ENXIO);
646 }
647
648 /*
649 * Allocate the parent bus DMA tag appropriate for our PCI
650 * interface.
9cf9a798 651 *
984263bc
MD
652 * Note that "simple" adapters can only address within a 32-bit
653 * span.
654 */
655 if (bus_dma_tag_create(NULL, /* parent */
656 1, 0, /* alignment, boundary */
9cf9a798 657 BUS_SPACE_MAXADDR, /* lowaddr */
984263bc
MD
658 BUS_SPACE_MAXADDR, /* highaddr */
659 NULL, NULL, /* filter, filterarg */
9cf9a798
SW
660 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
661 CISS_COMMAND_SG_LENGTH, /* nsegments */
984263bc
MD
662 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
663 BUS_DMA_ALLOCNOW, /* flags */
664 &sc->ciss_parent_dmat)) {
665 ciss_printf(sc, "can't allocate parent DMA tag\n");
666 return(ENOMEM);
667 }
668
669 /*
670 * Create DMA tag for mapping buffers into adapter-addressable
671 * space.
672 */
673 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
674 1, 0, /* alignment, boundary */
675 BUS_SPACE_MAXADDR, /* lowaddr */
676 BUS_SPACE_MAXADDR, /* highaddr */
677 NULL, NULL, /* filter, filterarg */
678 MAXBSIZE, CISS_COMMAND_SG_LENGTH, /* maxsize, nsegments */
679 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
680 0, /* flags */
681 &sc->ciss_buffer_dmat)) {
682 ciss_printf(sc, "can't allocate buffer DMA tag\n");
683 return(ENOMEM);
684 }
685 return(0);
686}
687
688/************************************************************************
689 * Wait for the adapter to come ready.
690 */
691static int
692ciss_wait_adapter(struct ciss_softc *sc)
693{
694 int i;
695
696 debug_called(1);
9cf9a798 697
984263bc
MD
698 /*
699 * Wait for the adapter to come ready.
700 */
701 if (!(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY)) {
702 ciss_printf(sc, "waiting for adapter to come ready...\n");
703 for (i = 0; !(sc->ciss_cfg->active_method & CISS_TRANSPORT_METHOD_READY); i++) {
704 DELAY(1000000); /* one second */
705 if (i > 30) {
706 ciss_printf(sc, "timed out waiting for adapter to come ready\n");
707 return(EIO);
708 }
709 }
710 }
711 return(0);
712}
713
714/************************************************************************
715 * Flush the adapter cache.
716 */
717static int
718ciss_flush_adapter(struct ciss_softc *sc)
719{
720 struct ciss_request *cr;
721 struct ciss_bmic_flush_cache *cbfc;
722 int error, command_status;
723
724 debug_called(1);
725
726 cr = NULL;
727 cbfc = NULL;
728
729 /*
730 * Build a BMIC request to flush the cache. We don't disable
731 * it, as we may be going to do more I/O (eg. we are emulating
732 * the Synchronise Cache command).
733 */
efda3bd0 734 cbfc = kmalloc(sizeof(*cbfc), CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
984263bc
MD
735 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_FLUSH_CACHE,
736 (void **)&cbfc, sizeof(*cbfc))) != 0)
737 goto out;
738
739 /*
740 * Submit the request and wait for it to complete.
741 */
742 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
743 ciss_printf(sc, "error sending BMIC FLUSH_CACHE command (%d)\n", error);
744 goto out;
745 }
9cf9a798 746
984263bc
MD
747 /*
748 * Check response.
749 */
750 ciss_report_request(cr, &command_status, NULL);
751 switch(command_status) {
752 case CISS_CMD_STATUS_SUCCESS:
753 break;
754 default:
9cf9a798 755 ciss_printf(sc, "error flushing cache (%s)\n",
984263bc
MD
756 ciss_name_command_status(command_status));
757 error = EIO;
758 goto out;
759 }
760
761out:
762 if (cbfc != NULL)
efda3bd0 763 kfree(cbfc, CISS_MALLOC_CLASS);
984263bc
MD
764 if (cr != NULL)
765 ciss_release_request(cr);
766 return(error);
767}
768
769/************************************************************************
770 * Allocate memory for the adapter command structures, initialise
771 * the request structures.
772 *
773 * Note that the entire set of commands are allocated in a single
774 * contiguous slab.
775 */
776static int
777ciss_init_requests(struct ciss_softc *sc)
778{
779 struct ciss_request *cr;
780 int i;
781
782 debug_called(1);
9cf9a798 783
984263bc
MD
784 /*
785 * Calculate the number of request structures/commands we are
786 * going to provide for this adapter.
787 */
788 sc->ciss_max_requests = min(CISS_MAX_REQUESTS, sc->ciss_cfg->max_outstanding_commands);
9cf9a798
SW
789
790 if (bootverbose)
984263bc
MD
791 ciss_printf(sc, "using %d of %d available commands\n",
792 sc->ciss_max_requests, sc->ciss_cfg->max_outstanding_commands);
793
794 /*
795 * Create the DMA tag for commands.
796 */
797 if (bus_dma_tag_create(sc->ciss_parent_dmat, /* parent */
798 1, 0, /* alignment, boundary */
9cf9a798 799 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
984263bc
MD
800 BUS_SPACE_MAXADDR, /* highaddr */
801 NULL, NULL, /* filter, filterarg */
9cf9a798 802 CISS_COMMAND_ALLOC_SIZE *
984263bc
MD
803 sc->ciss_max_requests, 1, /* maxsize, nsegments */
804 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
9cf9a798 805 BUS_DMA_ALLOCNOW, /* flags */
984263bc
MD
806 &sc->ciss_command_dmat)) {
807 ciss_printf(sc, "can't allocate command DMA tag\n");
808 return(ENOMEM);
809 }
810 /*
811 * Allocate memory and make it available for DMA.
812 */
9cf9a798 813 if (bus_dmamem_alloc(sc->ciss_command_dmat, (void **)&sc->ciss_command,
984263bc
MD
814 BUS_DMA_NOWAIT, &sc->ciss_command_map)) {
815 ciss_printf(sc, "can't allocate command memory\n");
816 return(ENOMEM);
817 }
9cf9a798
SW
818 bus_dmamap_load(sc->ciss_command_dmat, sc->ciss_command_map, sc->ciss_command,
819 CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests,
984263bc
MD
820 ciss_command_map_helper, sc, 0);
821 bzero(sc->ciss_command, CISS_COMMAND_ALLOC_SIZE * sc->ciss_max_requests);
822
823 /*
824 * Set up the request and command structures, push requests onto
825 * the free queue.
826 */
827 for (i = 1; i < sc->ciss_max_requests; i++) {
828 cr = &sc->ciss_request[i];
829 cr->cr_sc = sc;
830 cr->cr_tag = i;
9cf9a798 831 bus_dmamap_create(sc->ciss_buffer_dmat, 0, &cr->cr_datamap);
984263bc
MD
832 ciss_enqueue_free(cr);
833 }
834 return(0);
835}
836
837static void
838ciss_command_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
839{
840 struct ciss_softc *sc = (struct ciss_softc *)arg;
841
842 sc->ciss_command_phys = segs->ds_addr;
843}
844
845/************************************************************************
846 * Identify the adapter, print some information about it.
847 */
848static int
849ciss_identify_adapter(struct ciss_softc *sc)
850{
851 struct ciss_request *cr;
852 int error, command_status;
853
854 debug_called(1);
855
856 cr = NULL;
857
858 /*
859 * Get a request, allocate storage for the adapter data.
860 */
861 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_CTLR,
862 (void **)&sc->ciss_id,
863 sizeof(*sc->ciss_id))) != 0)
864 goto out;
865
866 /*
867 * Submit the request and wait for it to complete.
868 */
869 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
870 ciss_printf(sc, "error sending BMIC ID_CTLR command (%d)\n", error);
871 goto out;
872 }
9cf9a798 873
984263bc
MD
874 /*
875 * Check response.
876 */
877 ciss_report_request(cr, &command_status, NULL);
878 switch(command_status) {
879 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
880 break;
881 case CISS_CMD_STATUS_DATA_UNDERRUN:
882 case CISS_CMD_STATUS_DATA_OVERRUN:
883 ciss_printf(sc, "data over/underrun reading adapter information\n");
884 default:
885 ciss_printf(sc, "error reading adapter information (%s)\n",
886 ciss_name_command_status(command_status));
887 error = EIO;
888 goto out;
889 }
890
891 /* sanity-check reply */
892 if (!sc->ciss_id->big_map_supported) {
893 ciss_printf(sc, "adapter does not support BIG_MAP\n");
894 error = ENXIO;
895 goto out;
896 }
897
898#if 0
899 /* XXX later revisions may not need this */
900 sc->ciss_flags |= CISS_FLAG_FAKE_SYNCH;
901#endif
902
903 /* XXX only really required for old 5300 adapters? */
904 sc->ciss_flags |= CISS_FLAG_BMIC_ABORT;
9cf9a798 905
984263bc 906 /* print information */
9cf9a798
SW
907 if (bootverbose) {
908#if 0 /* XXX proxy volumes??? */
984263bc
MD
909 ciss_printf(sc, " %d logical drive%s configured\n",
910 sc->ciss_id->configured_logical_drives,
911 (sc->ciss_id->configured_logical_drives == 1) ? "" : "s");
9cf9a798 912#endif
984263bc
MD
913 ciss_printf(sc, " firmware %4.4s\n", sc->ciss_id->running_firmware_revision);
914 ciss_printf(sc, " %d SCSI channels\n", sc->ciss_id->scsi_bus_count);
915
916 ciss_printf(sc, " signature '%.4s'\n", sc->ciss_cfg->signature);
917 ciss_printf(sc, " valence %d\n", sc->ciss_cfg->valence);
918 ciss_printf(sc, " supported I/O methods 0x%b\n",
9cf9a798 919 sc->ciss_cfg->supported_methods,
984263bc
MD
920 "\20\1READY\2simple\3performant\4MEMQ\n");
921 ciss_printf(sc, " active I/O method 0x%b\n",
922 sc->ciss_cfg->active_method, "\20\2simple\3performant\4MEMQ\n");
923 ciss_printf(sc, " 4G page base 0x%08x\n",
924 sc->ciss_cfg->command_physlimit);
925 ciss_printf(sc, " interrupt coalesce delay %dus\n",
926 sc->ciss_cfg->interrupt_coalesce_delay);
927 ciss_printf(sc, " interrupt coalesce count %d\n",
928 sc->ciss_cfg->interrupt_coalesce_count);
929 ciss_printf(sc, " max outstanding commands %d\n",
930 sc->ciss_cfg->max_outstanding_commands);
9cf9a798 931 ciss_printf(sc, " bus types 0x%b\n", sc->ciss_cfg->bus_types,
984263bc
MD
932 "\20\1ultra2\2ultra3\10fibre1\11fibre2\n");
933 ciss_printf(sc, " server name '%.16s'\n", sc->ciss_cfg->server_name);
934 ciss_printf(sc, " heartbeat 0x%x\n", sc->ciss_cfg->heartbeat);
935 }
936
937out:
938 if (error) {
939 if (sc->ciss_id != NULL) {
efda3bd0 940 kfree(sc->ciss_id, CISS_MALLOC_CLASS);
984263bc
MD
941 sc->ciss_id = NULL;
942 }
9cf9a798 943 }
984263bc
MD
944 if (cr != NULL)
945 ciss_release_request(cr);
946 return(error);
947}
948
949/************************************************************************
9cf9a798 950 * Helper routine for generating a list of logical and physical luns.
984263bc 951 */
9cf9a798
SW
952static struct ciss_lun_report *
953ciss_report_luns(struct ciss_softc *sc, int opcode, int nunits)
984263bc
MD
954{
955 struct ciss_request *cr;
956 struct ciss_command *cc;
957 struct ciss_report_cdb *crc;
958 struct ciss_lun_report *cll;
984263bc 959 int command_status;
9cf9a798
SW
960 int report_size;
961 int error = 0;
984263bc
MD
962
963 debug_called(1);
964
965 cr = NULL;
966 cll = NULL;
967
968 /*
969 * Get a request, allocate storage for the address list.
970 */
971 if ((error = ciss_get_request(sc, &cr)) != 0)
972 goto out;
9cf9a798 973 report_size = sizeof(*cll) + nunits * sizeof(union ciss_device_address);
efda3bd0 974 cll = kmalloc(report_size, CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
984263bc
MD
975
976 /*
9cf9a798 977 * Build the Report Logical/Physical LUNs command.
984263bc
MD
978 */
979 cc = CISS_FIND_COMMAND(cr);
980 cr->cr_data = cll;
981 cr->cr_length = report_size;
982 cr->cr_flags = CISS_REQ_DATAIN;
9cf9a798 983
984263bc
MD
984 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
985 cc->header.address.physical.bus = 0;
986 cc->header.address.physical.target = 0;
987 cc->cdb.cdb_length = sizeof(*crc);
988 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
989 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
990 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
991 cc->cdb.timeout = 30; /* XXX better suggestions? */
992
993 crc = (struct ciss_report_cdb *)&(cc->cdb.cdb[0]);
994 bzero(crc, sizeof(*crc));
9cf9a798 995 crc->opcode = opcode;
984263bc
MD
996 crc->length = htonl(report_size); /* big-endian field */
997 cll->list_size = htonl(report_size - sizeof(*cll)); /* big-endian field */
9cf9a798 998
984263bc
MD
999 /*
1000 * Submit the request and wait for it to complete. (timeout
1001 * here should be much greater than above)
1002 */
1003 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
9cf9a798 1004 ciss_printf(sc, "error sending %d LUN command (%d)\n", opcode, error);
984263bc
MD
1005 goto out;
1006 }
1007
1008 /*
1009 * Check response. Note that data over/underrun is OK.
1010 */
1011 ciss_report_request(cr, &command_status, NULL);
1012 switch(command_status) {
1013 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1014 case CISS_CMD_STATUS_DATA_UNDERRUN: /* buffer too large, not bad */
1015 break;
1016 case CISS_CMD_STATUS_DATA_OVERRUN:
9cf9a798 1017 ciss_printf(sc, "WARNING: more units than driver limit (%d)\n",
984263bc
MD
1018 CISS_MAX_LOGICAL);
1019 break;
1020 default:
1021 ciss_printf(sc, "error detecting logical drive configuration (%s)\n",
1022 ciss_name_command_status(command_status));
1023 error = EIO;
1024 goto out;
1025 }
1026 ciss_release_request(cr);
1027 cr = NULL;
1028
9cf9a798
SW
1029out:
1030 if (cr != NULL)
1031 ciss_release_request(cr);
1032 if (error && cll != NULL) {
1033 kfree(cll, CISS_MALLOC_CLASS);
1034 cll = NULL;
1035 }
1036 return(cll);
1037}
1038
1039/************************************************************************
1040 * Find logical drives on the adapter.
1041 */
1042static int
1043ciss_init_logical(struct ciss_softc *sc)
1044{
1045 struct ciss_lun_report *cll;
1046 int error = 0, i, j;
1047 int ndrives;
1048
1049 debug_called(1);
1050
1051 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
1052 CISS_MAX_LOGICAL);
1053 if (cll == NULL) {
1054 error = ENXIO;
1055 goto out;
1056 }
1057
984263bc
MD
1058 /* sanity-check reply */
1059 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
9cf9a798 1060 if ((ndrives < 0) || (ndrives >= CISS_MAX_LOGICAL)) {
984263bc
MD
1061 ciss_printf(sc, "adapter claims to report absurd number of logical drives (%d > %d)\n",
1062 ndrives, CISS_MAX_LOGICAL);
9cf9a798
SW
1063 error = ENXIO;
1064 goto out;
984263bc
MD
1065 }
1066
1067 /*
1068 * Save logical drive information.
1069 */
9cf9a798
SW
1070 if (bootverbose) {
1071 ciss_printf(sc, "%d logical drive%s\n",
1072 ndrives, (ndrives > 1 || ndrives == 0) ? "s" : "");
1073 }
1074
1075 sc->ciss_logical =
1076 kmalloc(sc->ciss_max_logical_bus * sizeof(struct ciss_ldrive *),
1077 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1078
1079 for (i = 0; i <= sc->ciss_max_logical_bus; i++) {
1080 sc->ciss_logical[i] =
1081 kmalloc(CISS_MAX_LOGICAL * sizeof(struct ciss_ldrive),
1082 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1083
1084 for (j = 0; j < CISS_MAX_LOGICAL; j++)
1085 sc->ciss_logical[i][j].cl_status = CISS_LD_NONEXISTENT;
1086 }
1087
1088
984263bc
MD
1089 for (i = 0; i < CISS_MAX_LOGICAL; i++) {
1090 if (i < ndrives) {
9cf9a798
SW
1091 struct ciss_ldrive *ld;
1092 int bus, target;
1093
1094 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
1095 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
1096 ld = &sc->ciss_logical[bus][target];
1097
1098 ld->cl_address = cll->lun[i];
1099 ld->cl_controller = &sc->ciss_controllers[bus];
1100 if (ciss_identify_logical(sc, ld) != 0)
984263bc
MD
1101 continue;
1102 /*
1103 * If the drive has had media exchanged, we should bring it online.
1104 */
9cf9a798
SW
1105 if (ld->cl_lstatus->media_exchanged)
1106 ciss_accept_media(sc, ld);
984263bc 1107
984263bc
MD
1108 }
1109 }
9cf9a798 1110
984263bc 1111 out:
9cf9a798
SW
1112 if (cll != NULL)
1113 kfree(cll, CISS_MALLOC_CLASS);
1114 return(error);
1115}
1116
1117static int
1118ciss_init_physical(struct ciss_softc *sc)
1119{
1120 struct ciss_lun_report *cll;
1121 int error = 0, i;
1122 int nphys;
1123 int bus, target;
1124
1125 debug_called(1);
1126
1127 bus = 0;
1128 target = 0;
1129
1130 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
1131 CISS_MAX_PHYSICAL);
1132 if (cll == NULL) {
1133 error = ENXIO;
1134 goto out;
1135 }
1136
1137 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1138
1139 if (bootverbose) {
1140 ciss_printf(sc, "%d physical device%s\n",
1141 nphys, (nphys > 1 || nphys == 0) ? "s" : "");
1142 }
1143
984263bc 1144 /*
9cf9a798
SW
1145 * Figure out the bus mapping.
1146 * Logical buses include both the local logical bus for local arrays and
1147 * proxy buses for remote arrays. Physical buses are numbered by the
1148 * controller and represent physical buses that hold physical devices.
1149 * We shift these bus numbers so that everything fits into a single flat
1150 * numbering space for CAM. Logical buses occupy the first 32 CAM bus
1151 * numbers, and the physical bus numbers are shifted to be above that.
1152 * This results in the various driver arrays being indexed as follows:
1153 *
1154 * ciss_controllers[] - indexed by logical bus
1155 * ciss_cam_sim[] - indexed by both logical and physical, with physical
1156 * being shifted by 32.
1157 * ciss_logical[][] - indexed by logical bus
1158 * ciss_physical[][] - indexed by physical bus
1159 *
1160 * XXX This is getting more and more hackish. CISS really doesn't play
1161 * well with a standard SCSI model; devices are addressed via magic
1162 * cookies, not via b/t/l addresses. Since there is no way to store
1163 * the cookie in the CAM device object, we have to keep these lookup
1164 * tables handy so that the devices can be found quickly at the cost
1165 * of wasting memory and having a convoluted lookup scheme. This
1166 * driver should probably be converted to block interface.
1167 */
1168 /*
1169 * If the L2 and L3 SCSI addresses are 0, this signifies a proxy
1170 * controller. A proxy controller is another physical controller
1171 * behind the primary PCI controller. We need to know about this
1172 * so that BMIC commands can be properly targeted. There can be
1173 * proxy controllers attached to a single PCI controller, so
1174 * find the highest numbered one so the array can be properly
1175 * sized.
1176 */
1177 sc->ciss_max_logical_bus = 1;
1178 for (i = 0; i < nphys; i++) {
1179 if (cll->lun[i].physical.extra_address == 0) {
1180 bus = cll->lun[i].physical.bus;
1181 sc->ciss_max_logical_bus = max(sc->ciss_max_logical_bus, bus) + 1;
1182 } else {
1183 bus = CISS_EXTRA_BUS2(cll->lun[i].physical.extra_address);
1184 sc->ciss_max_physical_bus = max(sc->ciss_max_physical_bus, bus);
1185 }
1186 }
1187
1188 sc->ciss_controllers =
1189 kmalloc(sc->ciss_max_logical_bus * sizeof (union ciss_device_address),
1190 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1191
1192 /* setup a map of controller addresses */
1193 for (i = 0; i < nphys; i++) {
1194 if (cll->lun[i].physical.extra_address == 0) {
1195 sc->ciss_controllers[cll->lun[i].physical.bus] = cll->lun[i];
1196 }
1197 }
1198
1199 sc->ciss_physical =
1200 kmalloc(sc->ciss_max_physical_bus * sizeof(struct ciss_pdrive *),
1201 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1202
1203 for (i = 0; i < sc->ciss_max_physical_bus; i++) {
1204 sc->ciss_physical[i] =
1205 kmalloc(sizeof(struct ciss_pdrive) * CISS_MAX_PHYSTGT,
1206 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
1207 }
1208
1209 ciss_filter_physical(sc, cll);
1210
1211out:
984263bc 1212 if (cll != NULL)
efda3bd0 1213 kfree(cll, CISS_MALLOC_CLASS);
9cf9a798 1214
984263bc
MD
1215 return(error);
1216}
1217
1218static int
9cf9a798
SW
1219ciss_filter_physical(struct ciss_softc *sc, struct ciss_lun_report *cll)
1220{
1221 u_int32_t ea;
1222 int i, nphys;
1223 int bus, target;
1224
1225 nphys = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
1226 for (i = 0; i < nphys; i++) {
1227 if (cll->lun[i].physical.extra_address == 0)
1228 continue;
1229
1230 /*
1231 * Filter out devices that we don't want. Level 3 LUNs could
1232 * probably be supported, but the docs don't give enough of a
1233 * hint to know how.
1234 *
1235 * The mode field of the physical address is likely set to have
1236 * hard disks masked out. Honor it unless the user has overridden
1237 * us with the tunable. We also munge the inquiry data for these
1238 * disks so that they only show up as passthrough devices. Keeping
1239 * them visible in this fashion is useful for doing things like
1240 * flashing firmware.
1241 */
1242 ea = cll->lun[i].physical.extra_address;
1243 if ((CISS_EXTRA_BUS3(ea) != 0) || (CISS_EXTRA_TARGET3(ea) != 0) ||
1244 (CISS_EXTRA_MODE2(ea) == 0x3))
1245 continue;
1246 if ((ciss_expose_hidden_physical == 0) &&
1247 (cll->lun[i].physical.mode == CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL))
1248 continue;
1249
1250 /*
1251 * Note: CISS firmware numbers physical busses starting at '1', not
1252 * '0'. This numbering is internal to the firmware and is only
1253 * used as a hint here.
1254 */
1255 bus = CISS_EXTRA_BUS2(ea) - 1;
1256 target = CISS_EXTRA_TARGET2(ea);
1257 sc->ciss_physical[bus][target].cp_address = cll->lun[i];
1258 sc->ciss_physical[bus][target].cp_online = 1;
1259 }
1260
1261 return (0);
1262}
1263
1264static int
984263bc
MD
1265ciss_inquiry_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1266{
1267 struct ciss_request *cr;
1268 struct ciss_command *cc;
1269 struct scsi_inquiry *inq;
1270 int error;
1271 int command_status;
984263bc
MD
1272
1273 cr = NULL;
984263bc
MD
1274
1275 bzero(&ld->cl_geometry, sizeof(ld->cl_geometry));
1276
1277 if ((error = ciss_get_request(sc, &cr)) != 0)
1278 goto out;
1279
1280 cc = CISS_FIND_COMMAND(cr);
1281 cr->cr_data = &ld->cl_geometry;
1282 cr->cr_length = sizeof(ld->cl_geometry);
1283 cr->cr_flags = CISS_REQ_DATAIN;
1284
9cf9a798 1285 cc->header.address = ld->cl_address;
984263bc
MD
1286 cc->cdb.cdb_length = 6;
1287 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
1288 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1289 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
1290 cc->cdb.timeout = 30;
1291
1292 inq = (struct scsi_inquiry *)&(cc->cdb.cdb[0]);
1293 inq->opcode = INQUIRY;
1294 inq->byte2 = SI_EVPD;
1295 inq->page_code = CISS_VPD_LOGICAL_DRIVE_GEOMETRY;
1296 inq->length = sizeof(ld->cl_geometry);
1297
1298 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1299 ciss_printf(sc, "error getting geometry (%d)\n", error);
1300 goto out;
1301 }
1302
1303 ciss_report_request(cr, &command_status, NULL);
1304 switch(command_status) {
1305 case CISS_CMD_STATUS_SUCCESS:
1306 case CISS_CMD_STATUS_DATA_UNDERRUN:
1307 break;
1308 case CISS_CMD_STATUS_DATA_OVERRUN:
1309 ciss_printf(sc, "WARNING: Data overrun\n");
1310 break;
1311 default:
1312 ciss_printf(sc, "Error detecting logical drive geometry (%s)\n",
1313 ciss_name_command_status(command_status));
1314 break;
1315 }
1316
1317out:
1318 if (cr != NULL)
1319 ciss_release_request(cr);
1320 return(error);
1321}
1322/************************************************************************
1323 * Identify a logical drive, initialise state related to it.
1324 */
1325static int
1326ciss_identify_logical(struct ciss_softc *sc, struct ciss_ldrive *ld)
1327{
1328 struct ciss_request *cr;
1329 struct ciss_command *cc;
1330 struct ciss_bmic_cdb *cbc;
1331 int error, command_status;
1332
1333 debug_called(1);
1334
1335 cr = NULL;
1336
1337 /*
1338 * Build a BMIC request to fetch the drive ID.
1339 */
1340 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LDRIVE,
9cf9a798 1341 (void **)&ld->cl_ldrive,
984263bc
MD
1342 sizeof(*ld->cl_ldrive))) != 0)
1343 goto out;
1344 cc = CISS_FIND_COMMAND(cr);
9cf9a798 1345 cc->header.address = *ld->cl_controller; /* target controller */
984263bc 1346 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
9cf9a798 1347 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
984263bc
MD
1348
1349 /*
1350 * Submit the request and wait for it to complete.
1351 */
1352 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1353 ciss_printf(sc, "error sending BMIC LDRIVE command (%d)\n", error);
1354 goto out;
1355 }
9cf9a798 1356
984263bc
MD
1357 /*
1358 * Check response.
1359 */
1360 ciss_report_request(cr, &command_status, NULL);
1361 switch(command_status) {
1362 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1363 break;
1364 case CISS_CMD_STATUS_DATA_UNDERRUN:
1365 case CISS_CMD_STATUS_DATA_OVERRUN:
1366 ciss_printf(sc, "data over/underrun reading logical drive ID\n");
1367 default:
1368 ciss_printf(sc, "error reading logical drive ID (%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 /*
1377 * Build a CISS BMIC command to get the logical drive status.
1378 */
1379 if ((error = ciss_get_ldrive_status(sc, ld)) != 0)
1380 goto out;
1381
1382 /*
1383 * Get the logical drive geometry.
1384 */
1385 if ((error = ciss_inquiry_logical(sc, ld)) != 0)
1386 goto out;
1387
1388 /*
1389 * Print the drive's basic characteristics.
1390 */
9cf9a798
SW
1391 if (bootverbose) {
1392 ciss_printf(sc, "logical drive (b%dt%d): %s, %dMB ",
1393 CISS_LUN_TO_BUS(ld->cl_address.logical.lun),
1394 CISS_LUN_TO_TARGET(ld->cl_address.logical.lun),
1395 ciss_name_ldrive_org(ld->cl_ldrive->fault_tolerance),
984263bc
MD
1396 ((ld->cl_ldrive->blocks_available / (1024 * 1024)) *
1397 ld->cl_ldrive->block_size));
1398
1399 ciss_print_ldrive(sc, ld);
1400 }
1401out:
1402 if (error != 0) {
1403 /* make the drive not-exist */
1404 ld->cl_status = CISS_LD_NONEXISTENT;
1405 if (ld->cl_ldrive != NULL) {
efda3bd0 1406 kfree(ld->cl_ldrive, CISS_MALLOC_CLASS);
984263bc
MD
1407 ld->cl_ldrive = NULL;
1408 }
1409 if (ld->cl_lstatus != NULL) {
efda3bd0 1410 kfree(ld->cl_lstatus, CISS_MALLOC_CLASS);
984263bc
MD
1411 ld->cl_lstatus = NULL;
1412 }
1413 }
1414 if (cr != NULL)
1415 ciss_release_request(cr);
9cf9a798 1416
984263bc
MD
1417 return(error);
1418}
1419
1420/************************************************************************
1421 * Get status for a logical drive.
1422 *
1423 * XXX should we also do this in response to Test Unit Ready?
1424 */
1425static int
1426ciss_get_ldrive_status(struct ciss_softc *sc, struct ciss_ldrive *ld)
1427{
1428 struct ciss_request *cr;
1429 struct ciss_command *cc;
1430 struct ciss_bmic_cdb *cbc;
1431 int error, command_status;
1432
1433 /*
1434 * Build a CISS BMIC command to get the logical drive status.
1435 */
1436 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ID_LSTATUS,
9cf9a798 1437 (void **)&ld->cl_lstatus,
984263bc
MD
1438 sizeof(*ld->cl_lstatus))) != 0)
1439 goto out;
1440 cc = CISS_FIND_COMMAND(cr);
9cf9a798 1441 cc->header.address = *ld->cl_controller; /* target controller */
984263bc 1442 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
9cf9a798 1443 cbc->log_drive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
984263bc
MD
1444
1445 /*
1446 * Submit the request and wait for it to complete.
1447 */
1448 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1449 ciss_printf(sc, "error sending BMIC LSTATUS command (%d)\n", error);
1450 goto out;
1451 }
9cf9a798 1452
984263bc
MD
1453 /*
1454 * Check response.
1455 */
1456 ciss_report_request(cr, &command_status, NULL);
1457 switch(command_status) {
1458 case CISS_CMD_STATUS_SUCCESS: /* buffer right size */
1459 break;
1460 case CISS_CMD_STATUS_DATA_UNDERRUN:
1461 case CISS_CMD_STATUS_DATA_OVERRUN:
1462 ciss_printf(sc, "data over/underrun reading logical drive status\n");
1463 default:
1464 ciss_printf(sc, "error reading logical drive status (%s)\n",
1465 ciss_name_command_status(command_status));
1466 error = EIO;
1467 goto out;
1468 }
1469
1470 /*
1471 * Set the drive's summary status based on the returned status.
1472 *
9cf9a798 1473 * XXX testing shows that a failed JBOD drive comes back at next
984263bc
MD
1474 * boot in "queued for expansion" mode. WTF?
1475 */
1476 ld->cl_status = ciss_decode_ldrive_status(ld->cl_lstatus->status);
1477
1478out:
1479 if (cr != NULL)
1480 ciss_release_request(cr);
1481 return(error);
1482}
1483
1484/************************************************************************
1485 * Notify the adapter of a config update.
1486 */
1487static int
1488ciss_update_config(struct ciss_softc *sc)
1489{
1490 int i;
1491
1492 debug_called(1);
1493
1494 CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IDBR, CISS_TL_SIMPLE_IDBR_CFG_TABLE);
1495 for (i = 0; i < 1000; i++) {
1496 if (!(CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IDBR) &
1497 CISS_TL_SIMPLE_IDBR_CFG_TABLE)) {
1498 return(0);
1499 }
1500 DELAY(1000);
1501 }
1502 return(1);
1503}
1504
1505/************************************************************************
1506 * Accept new media into a logical drive.
1507 *
1508 * XXX The drive has previously been offline; it would be good if we
1509 * could make sure it's not open right now.
1510 */
1511static int
9cf9a798 1512ciss_accept_media(struct ciss_softc *sc, struct ciss_ldrive *ld)
984263bc
MD
1513{
1514 struct ciss_request *cr;
1515 struct ciss_command *cc;
1516 struct ciss_bmic_cdb *cbc;
9cf9a798
SW
1517 int command_status;
1518 int error = 0, ldrive;
984263bc 1519
9cf9a798
SW
1520 ldrive = CISS_LUN_TO_TARGET(ld->cl_address.logical.lun);
1521
1522 debug(0, "bringing logical drive %d back online", ldrive);
984263bc
MD
1523
1524 /*
1525 * Build a CISS BMIC command to bring the drive back online.
1526 */
1527 if ((error = ciss_get_bmic_request(sc, &cr, CISS_BMIC_ACCEPT_MEDIA,
1528 NULL, 0)) != 0)
1529 goto out;
1530 cc = CISS_FIND_COMMAND(cr);
9cf9a798 1531 cc->header.address = *ld->cl_controller; /* target controller */
984263bc
MD
1532 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
1533 cbc->log_drive = ldrive;
1534
1535 /*
9cf9a798 1536 * Submit the request and wait for it to complete.
984263bc 1537 */
9cf9a798
SW
1538 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
1539 ciss_printf(sc, "error sending BMIC ACCEPT MEDIA command (%d)\n", error);
1540 goto out;
984263bc
MD
1541 }
1542
1543 /*
984263bc
MD
1544 * Check response.
1545 */
1546 ciss_report_request(cr, &command_status, NULL);
1547 switch(command_status) {
1548 case CISS_CMD_STATUS_SUCCESS: /* all OK */
1549 /* we should get a logical drive status changed event here */
1550 break;
1551 default:
1552 ciss_printf(cr->cr_sc, "error accepting media into failed logical drive (%s)\n",
1553 ciss_name_command_status(command_status));
1554 break;
1555 }
9cf9a798
SW
1556
1557out:
1558 if (cr != NULL)
1559 ciss_release_request(cr);
1560 return(error);
984263bc
MD
1561}
1562
1563/************************************************************************
1564 * Release adapter resources.
1565 */
1566static void
1567ciss_free(struct ciss_softc *sc)
1568{
9cf9a798
SW
1569 struct ciss_request *cr;
1570 int i;
1571
984263bc
MD
1572 debug_called(1);
1573
1574 /* we're going away */
1575 sc->ciss_flags |= CISS_FLAG_ABORTING;
1576
1577 /* terminate the periodic heartbeat routine */
3fb01875 1578 callout_stop(&sc->ciss_periodic);
984263bc
MD
1579
1580 /* cancel the Event Notify chain */
1581 ciss_notify_abort(sc);
9cf9a798
SW
1582
1583 ciss_kill_notify_thread(sc);
1584
1585 /* remove the control device */
1586 if (sc->ciss_dev_t != NULL)
1587 destroy_dev(sc->ciss_dev_t);
1588
984263bc
MD
1589 /* free the controller data */
1590 if (sc->ciss_id != NULL)
efda3bd0 1591 kfree(sc->ciss_id, CISS_MALLOC_CLASS);
984263bc
MD
1592
1593 /* release I/O resources */
1594 if (sc->ciss_regs_resource != NULL)
1595 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1596 sc->ciss_regs_rid, sc->ciss_regs_resource);
1597 if (sc->ciss_cfg_resource != NULL)
1598 bus_release_resource(sc->ciss_dev, SYS_RES_MEMORY,
1599 sc->ciss_cfg_rid, sc->ciss_cfg_resource);
1600 if (sc->ciss_intr != NULL)
1601 bus_teardown_intr(sc->ciss_dev, sc->ciss_irq_resource, sc->ciss_intr);
1602 if (sc->ciss_irq_resource != NULL)
1603 bus_release_resource(sc->ciss_dev, SYS_RES_IRQ,
1604 sc->ciss_irq_rid, sc->ciss_irq_resource);
1605
1606 /* destroy DMA tags */
1607 if (sc->ciss_parent_dmat)
1608 bus_dma_tag_destroy(sc->ciss_parent_dmat);
9cf9a798
SW
1609
1610 while ((cr = ciss_dequeue_free(sc)) != NULL)
1611 bus_dmamap_destroy(sc->ciss_buffer_dmat, cr->cr_datamap);
984263bc
MD
1612 if (sc->ciss_buffer_dmat)
1613 bus_dma_tag_destroy(sc->ciss_buffer_dmat);
1614
1615 /* destroy command memory and DMA tag */
1616 if (sc->ciss_command != NULL) {
1617 bus_dmamap_unload(sc->ciss_command_dmat, sc->ciss_command_map);
1618 bus_dmamem_free(sc->ciss_command_dmat, sc->ciss_command, sc->ciss_command_map);
1619 }
9cf9a798 1620 if (sc->ciss_command_dmat)
984263bc
MD
1621 bus_dma_tag_destroy(sc->ciss_command_dmat);
1622
1623 /* disconnect from CAM */
1624 if (sc->ciss_cam_sim) {
9cf9a798
SW
1625 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
1626 if (sc->ciss_cam_sim[i]) {
1627 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1628 cam_sim_free(sc->ciss_cam_sim[i]);
1629 }
1630 }
1631 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
1632 CISS_PHYSICAL_BASE; i++) {
1633 if (sc->ciss_cam_sim[i]) {
1634 xpt_bus_deregister(cam_sim_path(sc->ciss_cam_sim[i]));
1635 cam_sim_free(sc->ciss_cam_sim[i]);
1636 }
1637 }
1638 kfree(sc->ciss_cam_sim, CISS_MALLOC_CLASS);
984263bc
MD
1639 }
1640 if (sc->ciss_cam_devq)
521cf4d2 1641 cam_simq_release(sc->ciss_cam_devq);
9cf9a798
SW
1642
1643 if (sc->ciss_logical) {
1644 for (i = 0; i < sc->ciss_max_logical_bus; i++)
1645 kfree(sc->ciss_logical[i], CISS_MALLOC_CLASS);
1646 kfree(sc->ciss_logical, CISS_MALLOC_CLASS);
1647 }
1648
1649 if (sc->ciss_physical) {
1650 for (i = 0; i < sc->ciss_max_physical_bus; i++)
1651 kfree(sc->ciss_physical[i], CISS_MALLOC_CLASS);
1652 kfree(sc->ciss_physical, CISS_MALLOC_CLASS);
1653 }
1654
1655 if (sc->ciss_controllers)
1656 kfree(sc->ciss_controllers, CISS_MALLOC_CLASS);
984263bc
MD
1657}
1658
1659/************************************************************************
1660 * Give a command to the adapter.
1661 *
1662 * Note that this uses the simple transport layer directly. If we
1663 * want to add support for other layers, we'll need a switch of some
1664 * sort.
1665 *
1666 * Note that the simple transport layer has no way of refusing a
1667 * command; we only have as many request structures as the adapter
1668 * supports commands, so we don't have to check (this presumes that
1669 * the adapter can handle commands as fast as we throw them at it).
1670 */
1671static int
1672ciss_start(struct ciss_request *cr)
1673{
1674 struct ciss_command *cc; /* XXX debugging only */
1675 int error;
1676
1677 cc = CISS_FIND_COMMAND(cr);
1678 debug(2, "post command %d tag %d ", cr->cr_tag, cc->header.host_tag);
1679
1680 /*
1681 * Map the request's data.
1682 */
1683 if ((error = ciss_map_request(cr)))
1684 return(error);
1685
1686#if 0
1687 ciss_print_request(cr);
1688#endif
1689
984263bc
MD
1690 return(0);
1691}
1692
1693/************************************************************************
1694 * Fetch completed request(s) from the adapter, queue them for
1695 * completion handling.
1696 *
1697 * Note that this uses the simple transport layer directly. If we
1698 * want to add support for other layers, we'll need a switch of some
1699 * sort.
1700 *
1701 * Note that the simple transport mechanism does not require any
1702 * reentrancy protection; the OPQ read is atomic. If there is a
1703 * chance of a race with something else that might move the request
1704 * off the busy list, then we will have to lock against that
1705 * (eg. timeouts, etc.)
1706 */
1707static void
1708ciss_done(struct ciss_softc *sc)
1709{
1710 struct ciss_request *cr;
1711 struct ciss_command *cc;
1712 u_int32_t tag, index;
1713 int complete;
9cf9a798 1714
984263bc
MD
1715 debug_called(3);
1716
1717 /*
1718 * Loop quickly taking requests from the adapter and moving them
1719 * from the busy queue to the completed queue.
1720 */
1721 complete = 0;
1722 for (;;) {
1723
1724 /* see if the OPQ contains anything */
1725 if (!CISS_TL_SIMPLE_OPQ_INTERRUPT(sc))
1726 break;
1727
1728 tag = CISS_TL_SIMPLE_FETCH_CMD(sc);
1729 if (tag == CISS_TL_SIMPLE_OPQ_EMPTY)
1730 break;
1731 index = tag >> 2;
9cf9a798 1732 debug(2, "completed command %d%s", index,
984263bc
MD
1733 (tag & CISS_HDR_HOST_TAG_ERROR) ? " with error" : "");
1734 if (index >= sc->ciss_max_requests) {
1735 ciss_printf(sc, "completed invalid request %d (0x%x)\n", index, tag);
1736 continue;
1737 }
1738 cr = &(sc->ciss_request[index]);
1739 cc = CISS_FIND_COMMAND(cr);
1740 cc->header.host_tag = tag; /* not updated by adapter */
1741 if (ciss_remove_busy(cr)) {
1742 /* assume this is garbage out of the adapter */
1743 ciss_printf(sc, "completed nonbusy request %d\n", index);
1744 } else {
1745 ciss_enqueue_complete(cr);
1746 }
1747 complete = 1;
1748 }
9cf9a798 1749
984263bc
MD
1750 /*
1751 * Invoke completion processing. If we can defer this out of
1752 * interrupt context, that'd be good.
1753 */
1754 if (complete)
1755 ciss_complete(sc);
1756}
1757
1758/************************************************************************
1759 * Take an interrupt from the adapter.
1760 */
1761static void
1762ciss_intr(void *arg)
1763{
1764 struct ciss_softc *sc = (struct ciss_softc *)arg;
1765
1766 /*
1767 * The only interrupt we recognise indicates that there are
1768 * entries in the outbound post queue.
1769 */
1770 ciss_done(sc);
1771}
1772
1773/************************************************************************
1774 * Process completed requests.
1775 *
1776 * Requests can be completed in three fashions:
1777 *
1778 * - by invoking a callback function (cr_complete is non-null)
1779 * - by waking up a sleeper (cr_flags has CISS_REQ_SLEEP set)
1780 * - by clearing the CISS_REQ_POLL flag in interrupt/timeout context
1781 */
1782static void
1783ciss_complete(struct ciss_softc *sc)
1784{
1785 struct ciss_request *cr;
1786
1787 debug_called(2);
1788
1789 /*
1790 * Loop taking requests off the completed queue and performing
1791 * completion processing on them.
1792 */
1793 for (;;) {
1794 if ((cr = ciss_dequeue_complete(sc)) == NULL)
1795 break;
1796 ciss_unmap_request(cr);
9cf9a798 1797
984263bc
MD
1798 /*
1799 * If the request has a callback, invoke it.
1800 */
1801 if (cr->cr_complete != NULL) {
1802 cr->cr_complete(cr);
1803 continue;
1804 }
9cf9a798 1805
984263bc
MD
1806 /*
1807 * If someone is sleeping on this request, wake them up.
1808 */
1809 if (cr->cr_flags & CISS_REQ_SLEEP) {
1810 cr->cr_flags &= ~CISS_REQ_SLEEP;
1811 wakeup(cr);
1812 continue;
1813 }
1814
1815 /*
1816 * If someone is polling this request for completion, signal.
1817 */
1818 if (cr->cr_flags & CISS_REQ_POLL) {
1819 cr->cr_flags &= ~CISS_REQ_POLL;
1820 continue;
1821 }
9cf9a798 1822
984263bc
MD
1823 /*
1824 * Give up and throw the request back on the free queue. This
1825 * should never happen; resources will probably be lost.
1826 */
1827 ciss_printf(sc, "WARNING: completed command with no submitter\n");
1828 ciss_enqueue_free(cr);
1829 }
1830}
1831
1832/************************************************************************
1833 * Report on the completion status of a request, and pass back SCSI
1834 * and command status values.
1835 */
1836static int
1837ciss_report_request(struct ciss_request *cr, int *command_status, int *scsi_status)
1838{
1839 struct ciss_command *cc;
1840 struct ciss_error_info *ce;
1841
1842 debug_called(2);
1843
1844 cc = CISS_FIND_COMMAND(cr);
1845 ce = (struct ciss_error_info *)&(cc->sg[0]);
1846
1847 /*
1848 * We don't consider data under/overrun an error for the Report
1849 * Logical/Physical LUNs commands.
1850 */
1851 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) &&
9cf9a798
SW
1852 ((ce->command_status == CISS_CMD_STATUS_DATA_OVERRUN) ||
1853 (ce->command_status == CISS_CMD_STATUS_DATA_UNDERRUN)) &&
984263bc 1854 ((cc->cdb.cdb[0] == CISS_OPCODE_REPORT_LOGICAL_LUNS) ||
9cf9a798
SW
1855 (cc->cdb.cdb[0] == CISS_OPCODE_REPORT_PHYSICAL_LUNS) ||
1856 (cc->cdb.cdb[0] == INQUIRY))) {
984263bc
MD
1857 cc->header.host_tag &= ~CISS_HDR_HOST_TAG_ERROR;
1858 debug(2, "ignoring irrelevant under/overrun error");
1859 }
9cf9a798 1860
984263bc
MD
1861 /*
1862 * Check the command's error bit, if clear, there's no status and
1863 * everything is OK.
1864 */
1865 if (!(cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR)) {
1866 if (scsi_status != NULL)
1867 *scsi_status = SCSI_STATUS_OK;
1868 if (command_status != NULL)
1869 *command_status = CISS_CMD_STATUS_SUCCESS;
1870 return(0);
1871 } else {
1872 if (command_status != NULL)
1873 *command_status = ce->command_status;
1874 if (scsi_status != NULL) {
1875 if (ce->command_status == CISS_CMD_STATUS_TARGET_STATUS) {
1876 *scsi_status = ce->scsi_status;
1877 } else {
1878 *scsi_status = -1;
1879 }
1880 }
1881 if (bootverbose)
1882 ciss_printf(cr->cr_sc, "command status 0x%x (%s) scsi status 0x%x\n",
1883 ce->command_status, ciss_name_command_status(ce->command_status),
1884 ce->scsi_status);
1885 if (ce->command_status == CISS_CMD_STATUS_INVALID_COMMAND) {
1886 ciss_printf(cr->cr_sc, "invalid command, offense size %d at %d, value 0x%x\n",
1887 ce->additional_error_info.invalid_command.offense_size,
1888 ce->additional_error_info.invalid_command.offense_offset,
1889 ce->additional_error_info.invalid_command.offense_value);
1890 }
1891 }
9cf9a798
SW
1892#if 0
1893 ciss_print_request(cr);
1894#endif
984263bc
MD
1895 return(1);
1896}
1897
1898/************************************************************************
1899 * Issue a request and don't return until it's completed.
1900 *
1901 * Depending on adapter status, we may poll or sleep waiting for
1902 * completion.
1903 */
1904static int
1905ciss_synch_request(struct ciss_request *cr, int timeout)
1906{
1907 if (cr->cr_sc->ciss_flags & CISS_FLAG_RUNNING) {
1908 return(ciss_wait_request(cr, timeout));
1909 } else {
1910 return(ciss_poll_request(cr, timeout));
1911 }
1912}
1913
1914/************************************************************************
1915 * Issue a request and poll for completion.
1916 *
1917 * Timeout in milliseconds.
1918 */
1919static int
1920ciss_poll_request(struct ciss_request *cr, int timeout)
1921{
1922 int error;
9cf9a798 1923
984263bc
MD
1924 debug_called(2);
1925
1926 cr->cr_flags |= CISS_REQ_POLL;
1927 if ((error = ciss_start(cr)) != 0)
1928 return(error);
1929
1930 do {
1931 ciss_done(cr->cr_sc);
1932 if (!(cr->cr_flags & CISS_REQ_POLL))
1933 return(0);
1934 DELAY(1000);
1935 } while (timeout-- >= 0);
1936 return(EWOULDBLOCK);
1937}
1938
1939/************************************************************************
1940 * Issue a request and sleep waiting for completion.
1941 *
1942 * Timeout in milliseconds. Note that a spurious wakeup will reset
1943 * the timeout.
1944 */
1945static int
1946ciss_wait_request(struct ciss_request *cr, int timeout)
1947{
7f2216bc 1948 int error;
984263bc
MD
1949
1950 debug_called(2);
1951
1952 cr->cr_flags |= CISS_REQ_SLEEP;
1953 if ((error = ciss_start(cr)) != 0)
1954 return(error);
1955
7f2216bc 1956 crit_enter();
9cf9a798
SW
1957 while ((cr->cr_flags & CISS_REQ_SLEEP) && (error != EWOULDBLOCK)) {
1958 error = tsleep(cr, 0, "cissREQ", (timeout * hz) / 1000);
984263bc 1959 }
7f2216bc 1960 crit_exit();
984263bc
MD
1961 return(error);
1962}
1963
1964#if 0
1965/************************************************************************
1966 * Abort a request. Note that a potential exists here to race the
1967 * request being completed; the caller must deal with this.
1968 */
1969static int
1970ciss_abort_request(struct ciss_request *ar)
1971{
1972 struct ciss_request *cr;
1973 struct ciss_command *cc;
1974 struct ciss_message_cdb *cmc;
1975 int error;
1976
1977 debug_called(1);
1978
1979 /* get a request */
1980 if ((error = ciss_get_request(ar->cr_sc, &cr)) != 0)
1981 return(error);
1982
9cf9a798 1983 /* build the abort command */
984263bc
MD
1984 cc = CISS_FIND_COMMAND(cr);
1985 cc->header.address.mode.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL; /* addressing? */
1986 cc->header.address.physical.target = 0;
1987 cc->header.address.physical.bus = 0;
1988 cc->cdb.cdb_length = sizeof(*cmc);
1989 cc->cdb.type = CISS_CDB_TYPE_MESSAGE;
1990 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
1991 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
1992 cc->cdb.timeout = 30;
1993
1994 cmc = (struct ciss_message_cdb *)&(cc->cdb.cdb[0]);
1995 cmc->opcode = CISS_OPCODE_MESSAGE_ABORT;
1996 cmc->type = CISS_MESSAGE_ABORT_TASK;
1997 cmc->abort_tag = ar->cr_tag; /* endianness?? */
1998
1999 /*
2000 * Send the request and wait for a response. If we believe we
2001 * aborted the request OK, clear the flag that indicates it's
2002 * running.
2003 */
2004 error = ciss_synch_request(cr, 35 * 1000);
2005 if (!error)
2006 error = ciss_report_request(cr, NULL, NULL);
2007 ciss_release_request(cr);
2008
2009 return(error);
2010}
2011#endif
2012
2013
2014/************************************************************************
2015 * Fetch and initialise a request
2016 */
2017static int
2018ciss_get_request(struct ciss_softc *sc, struct ciss_request **crp)
2019{
2020 struct ciss_request *cr;
2021
2022 debug_called(2);
2023
2024 /*
2025 * Get a request and clean it up.
2026 */
2027 if ((cr = ciss_dequeue_free(sc)) == NULL)
2028 return(ENOMEM);
2029
2030 cr->cr_data = NULL;
2031 cr->cr_flags = 0;
2032 cr->cr_complete = NULL;
9cf9a798
SW
2033 cr->cr_private = NULL;
2034
984263bc
MD
2035 ciss_preen_command(cr);
2036 *crp = cr;
2037 return(0);
2038}
2039
2040static void
2041ciss_preen_command(struct ciss_request *cr)
2042{
2043 struct ciss_command *cc;
2044 u_int32_t cmdphys;
2045
2046 /*
2047 * Clean up the command structure.
2048 *
2049 * Note that we set up the error_info structure here, since the
2050 * length can be overwritten by any command.
2051 */
2052 cc = CISS_FIND_COMMAND(cr);
2053 cc->header.sg_in_list = 0; /* kinda inefficient this way */
2054 cc->header.sg_total = 0;
2055 cc->header.host_tag = cr->cr_tag << 2;
2056 cc->header.host_tag_zeroes = 0;
2057 cmdphys = CISS_FIND_COMMANDPHYS(cr);
2058 cc->error_info.error_info_address = cmdphys + sizeof(struct ciss_command);
2059 cc->error_info.error_info_length = CISS_COMMAND_ALLOC_SIZE - sizeof(struct ciss_command);
984263bc
MD
2060}
2061
2062/************************************************************************
2063 * Release a request to the free list.
2064 */
2065static void
2066ciss_release_request(struct ciss_request *cr)
2067{
2068 struct ciss_softc *sc;
2069
2070 debug_called(2);
2071
2072 sc = cr->cr_sc;
9cf9a798 2073
984263bc
MD
2074 /* release the request to the free queue */
2075 ciss_requeue_free(cr);
2076}
2077
2078/************************************************************************
2079 * Allocate a request that will be used to send a BMIC command. Do some
2080 * of the common setup here to avoid duplicating it everywhere else.
2081 */
2082static int
2083ciss_get_bmic_request(struct ciss_softc *sc, struct ciss_request **crp,
2084 int opcode, void **bufp, size_t bufsize)
2085{
2086 struct ciss_request *cr;
2087 struct ciss_command *cc;
2088 struct ciss_bmic_cdb *cbc;
2089 void *buf;
2090 int error;
2091 int dataout;
2092
2093 debug_called(2);
2094
2095 cr = NULL;
9cf9a798 2096 buf = NULL;
984263bc
MD
2097
2098 /*
2099 * Get a request.
2100 */
2101 if ((error = ciss_get_request(sc, &cr)) != 0)
2102 goto out;
2103
2104 /*
2105 * Allocate data storage if requested, determine the data direction.
2106 */
2107 dataout = 0;
2108 if ((bufsize > 0) && (bufp != NULL)) {
2109 if (*bufp == NULL) {
efda3bd0 2110 buf = kmalloc(bufsize, CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
984263bc
MD
2111 } else {
2112 buf = *bufp;
2113 dataout = 1; /* we are given a buffer, so we are writing */
2114 }
2115 }
2116
2117 /*
2118 * Build a CISS BMIC command to get the logical drive ID.
2119 */
2120 cr->cr_data = buf;
2121 cr->cr_length = bufsize;
2122 if (!dataout)
2123 cr->cr_flags = CISS_REQ_DATAIN;
9cf9a798 2124
984263bc
MD
2125 cc = CISS_FIND_COMMAND(cr);
2126 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
2127 cc->header.address.physical.bus = 0;
2128 cc->header.address.physical.target = 0;
2129 cc->cdb.cdb_length = sizeof(*cbc);
2130 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
2131 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
2132 cc->cdb.direction = dataout ? CISS_CDB_DIRECTION_WRITE : CISS_CDB_DIRECTION_READ;
2133 cc->cdb.timeout = 0;
2134
2135 cbc = (struct ciss_bmic_cdb *)&(cc->cdb.cdb[0]);
2136 bzero(cbc, sizeof(*cbc));
2137 cbc->opcode = dataout ? CISS_ARRAY_CONTROLLER_WRITE : CISS_ARRAY_CONTROLLER_READ;
2138 cbc->bmic_opcode = opcode;
2139 cbc->size = htons((u_int16_t)bufsize);
2140
2141out:
2142 if (error) {
2143 if (cr != NULL)
2144 ciss_release_request(cr);
2145 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL))
efda3bd0 2146 kfree(buf, CISS_MALLOC_CLASS);
984263bc
MD
2147 } else {
2148 *crp = cr;
2149 if ((bufp != NULL) && (*bufp == NULL) && (buf != NULL))
2150 *bufp = buf;
2151 }
2152 return(error);
2153}
2154
2155/************************************************************************
2156 * Handle a command passed in from userspace.
2157 */
2158static int
2159ciss_user_command(struct ciss_softc *sc, IOCTL_Command_struct *ioc)
2160{
2161 struct ciss_request *cr;
2162 struct ciss_command *cc;
2163 struct ciss_error_info *ce;
9cf9a798 2164 int error = 0;
984263bc
MD
2165
2166 debug_called(1);
2167
2168 cr = NULL;
2169
2170 /*
2171 * Get a request.
2172 */
2173 if ((error = ciss_get_request(sc, &cr)) != 0)
2174 goto out;
2175 cc = CISS_FIND_COMMAND(cr);
2176
2177 /*
2178 * Allocate an in-kernel databuffer if required, copy in user data.
2179 */
2180 cr->cr_length = ioc->buf_size;
2181 if (ioc->buf_size > 0) {
978400d3 2182 cr->cr_data = kmalloc(ioc->buf_size, CISS_MALLOC_CLASS, M_WAITOK);
984263bc
MD
2183 if ((error = copyin(ioc->buf, cr->cr_data, ioc->buf_size))) {
2184 debug(0, "copyin: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2185 goto out;
2186 }
2187 }
2188
2189 /*
2190 * Build the request based on the user command.
2191 */
2192 bcopy(&ioc->LUN_info, &cc->header.address, sizeof(cc->header.address));
2193 bcopy(&ioc->Request, &cc->cdb, sizeof(cc->cdb));
2194
2195 /* XXX anything else to populate here? */
2196
2197 /*
2198 * Run the command.
2199 */
2200 if ((error = ciss_synch_request(cr, 60 * 1000))) {
2201 debug(0, "request failed - %d", error);
2202 goto out;
2203 }
2204
2205 /*
9cf9a798 2206 * Check to see if the command succeeded.
984263bc
MD
2207 */
2208 ce = (struct ciss_error_info *)&(cc->sg[0]);
9cf9a798
SW
2209 if ((cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) == 0)
2210 bzero(ce, sizeof(*ce));
2211
2212 /*
2213 * Copy the results back to the user.
2214 */
984263bc
MD
2215 bcopy(ce, &ioc->error_info, sizeof(*ce));
2216 if ((ioc->buf_size > 0) &&
2217 (error = copyout(cr->cr_data, ioc->buf, ioc->buf_size))) {
2218 debug(0, "copyout: bad data buffer %p/%d", ioc->buf, ioc->buf_size);
2219 goto out;
2220 }
2221
2222 /* done OK */
2223 error = 0;
2224
2225out:
2226 if ((cr != NULL) && (cr->cr_data != NULL))
efda3bd0 2227 kfree(cr->cr_data, CISS_MALLOC_CLASS);
984263bc
MD
2228 if (cr != NULL)
2229 ciss_release_request(cr);
2230 return(error);
2231}
2232
2233/************************************************************************
2234 * Map a request into bus-visible space, initialise the scatter/gather
2235 * list.
2236 */
2237static int
2238ciss_map_request(struct ciss_request *cr)
2239{
2240 struct ciss_softc *sc;
9cf9a798 2241 int error = 0;
984263bc
MD
2242
2243 debug_called(2);
9cf9a798 2244
984263bc
MD
2245 sc = cr->cr_sc;
2246
2247 /* check that mapping is necessary */
9cf9a798 2248 if (cr->cr_flags & CISS_REQ_MAPPED)
984263bc 2249 return(0);
984263bc
MD
2250
2251 cr->cr_flags |= CISS_REQ_MAPPED;
9cf9a798
SW
2252
2253 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2254 BUS_DMASYNC_PREWRITE);
2255
2256 if (cr->cr_data != NULL) {
2257 error = bus_dmamap_load(sc->ciss_buffer_dmat, cr->cr_datamap,
2258 cr->cr_data, cr->cr_length,
2259 ciss_request_map_helper, cr, 0);
2260 if (error != 0)
2261 return (error);
2262 } else {
2263 /*
2264 * Post the command to the adapter.
2265 */
2266 ciss_enqueue_busy(cr);
2267 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr));
2268 }
2269
984263bc
MD
2270 return(0);
2271}
2272
2273static void
2274ciss_request_map_helper(void *arg, bus_dma_segment_t *segs, int nseg, int error)
2275{
2276 struct ciss_command *cc;
9cf9a798
SW
2277 struct ciss_request *cr;
2278 struct ciss_softc *sc;
984263bc
MD
2279 int i;
2280
2281 debug_called(2);
9cf9a798
SW
2282
2283 cr = (struct ciss_request *)arg;
2284 sc = cr->cr_sc;
2285 cc = CISS_FIND_COMMAND(cr);
2286
984263bc
MD
2287 for (i = 0; i < nseg; i++) {
2288 cc->sg[i].address = segs[i].ds_addr;
2289 cc->sg[i].length = segs[i].ds_len;
2290 cc->sg[i].extension = 0;
2291 }
2292 /* we leave the s/g table entirely within the command */
2293 cc->header.sg_in_list = nseg;
2294 cc->header.sg_total = nseg;
9cf9a798
SW
2295
2296 if (cr->cr_flags & CISS_REQ_DATAIN)
2297 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREREAD);
2298 if (cr->cr_flags & CISS_REQ_DATAOUT)
2299 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_PREWRITE);
2300
2301 /*
2302 * Post the command to the adapter.
2303 */
2304 ciss_enqueue_busy(cr);
2305 CISS_TL_SIMPLE_POST_CMD(cr->cr_sc, CISS_FIND_COMMANDPHYS(cr));
984263bc
MD
2306}
2307
2308/************************************************************************
2309 * Unmap a request from bus-visible space.
2310 */
2311static void
2312ciss_unmap_request(struct ciss_request *cr)
2313{
2314 struct ciss_softc *sc;
2315
2316 debug_called(2);
9cf9a798 2317
984263bc
MD
2318 sc = cr->cr_sc;
2319
2320 /* check that unmapping is necessary */
9cf9a798 2321 if ((cr->cr_flags & CISS_REQ_MAPPED) == 0)
984263bc
MD
2322 return;
2323
9cf9a798
SW
2324 bus_dmamap_sync(sc->ciss_command_dmat, sc->ciss_command_map,
2325 BUS_DMASYNC_POSTWRITE);
2326
2327 if (cr->cr_data == NULL)
2328 goto out;
2329
984263bc
MD
2330 if (cr->cr_flags & CISS_REQ_DATAIN)
2331 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTREAD);
2332 if (cr->cr_flags & CISS_REQ_DATAOUT)
2333 bus_dmamap_sync(sc->ciss_buffer_dmat, cr->cr_datamap, BUS_DMASYNC_POSTWRITE);
2334
2335 bus_dmamap_unload(sc->ciss_buffer_dmat, cr->cr_datamap);
9cf9a798 2336out:
984263bc
MD
2337 cr->cr_flags &= ~CISS_REQ_MAPPED;
2338}
2339
2340/************************************************************************
2341 * Attach the driver to CAM.
2342 *
2343 * We put all the logical drives on a single SCSI bus.
2344 */
2345static int
2346ciss_cam_init(struct ciss_softc *sc)
2347{
9cf9a798 2348 int i, maxbus;
984263bc
MD
2349
2350 debug_called(1);
2351
2352 /*
2353 * Allocate a devq. We can reuse this for the masked physical
2354 * devices if we decide to export these as well.
2355 */
2356 if ((sc->ciss_cam_devq = cam_simq_alloc(sc->ciss_max_requests)) == NULL) {
2357 ciss_printf(sc, "can't allocate CAM SIM queue\n");
2358 return(ENOMEM);
2359 }
2360
2361 /*
2362 * Create a SIM.
9cf9a798
SW
2363 *
2364 * This naturally wastes a bit of memory. The alternative is to allocate
2365 * and register each bus as it is found, and then track them on a linked
2366 * list. Unfortunately, the driver has a few places where it needs to
2367 * look up the SIM based solely on bus number, and it's unclear whether
2368 * a list traversal would work for these situations.
2369 */
2370 maxbus = max(sc->ciss_max_logical_bus, sc->ciss_max_physical_bus +
2371 CISS_PHYSICAL_BASE);
2372 sc->ciss_cam_sim = kmalloc(maxbus * sizeof(struct cam_sim*),
2373 CISS_MALLOC_CLASS, M_INTWAIT | M_ZERO);
2374
2375 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
2376 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2377 "ciss", sc,
2378 device_get_unit(sc->ciss_dev),
2379 &sim_mplock, 1,
2380 sc->ciss_max_requests - 2,
2381 sc->ciss_cam_devq)) == NULL) {
2382 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2383 return(ENOMEM);
2384 }
2385
2386 /*
2387 * Register bus with this SIM.
2388 */
2389 if (i == 0 || sc->ciss_controllers[i].physical.bus != 0) {
2390 if (xpt_bus_register(sc->ciss_cam_sim[i], i) != 0) {
2391 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2392 return (ENXIO);
2393 }
2394 }
984263bc
MD
2395 }
2396
9cf9a798
SW
2397 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2398 CISS_PHYSICAL_BASE; i++) {
2399 if ((sc->ciss_cam_sim[i] = cam_sim_alloc(ciss_cam_action, ciss_cam_poll,
2400 "ciss", sc,
2401 device_get_unit(sc->ciss_dev),
2402 &sim_mplock, 1,
2403 sc->ciss_max_requests - 2,
2404 sc->ciss_cam_devq)) == NULL) {
2405 ciss_printf(sc, "can't allocate CAM SIM for controller %d\n", i);
2406 return (ENOMEM);
2407 }
2408
2409 if (xpt_bus_register(sc->ciss_cam_sim[i], i) != 0) {
2410 ciss_printf(sc, "can't register SCSI bus %d\n", i);
2411 return (ENXIO);
2412 }
984263bc
MD
2413 }
2414
2415 /*
2416 * Initiate a rescan of the bus.
2417 */
2418 ciss_cam_rescan_all(sc);
9cf9a798 2419
984263bc
MD
2420 return(0);
2421}
2422
2423/************************************************************************
2424 * Initiate a rescan of the 'logical devices' SIM
9cf9a798 2425 */
984263bc 2426static void
9cf9a798 2427ciss_cam_rescan_target(struct ciss_softc *sc, int bus, int target)
984263bc 2428{
9cf9a798
SW
2429 struct cam_path *path;
2430 union ccb *ccb;
984263bc
MD
2431
2432 debug_called(1);
2433
978400d3 2434 ccb = kmalloc(sizeof(union ccb), M_TEMP, M_WAITOK | M_ZERO);
9cf9a798
SW
2435
2436 if (xpt_create_path(&path, xpt_periph, cam_sim_path(sc->ciss_cam_sim[bus]),
2437 target, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
984263bc 2438 ciss_printf(sc, "rescan failed (can't create path)\n");
9cf9a798 2439 kfree(ccb, M_TEMP);
984263bc
MD
2440 return;
2441 }
9cf9a798
SW
2442
2443 xpt_setup_ccb(&ccb->ccb_h, path, 5/*priority (low)*/);
984263bc
MD
2444 ccb->ccb_h.func_code = XPT_SCAN_BUS;
2445 ccb->ccb_h.cbfcnp = ciss_cam_rescan_callback;
2446 ccb->crcn.flags = CAM_FLAG_NONE;
2447 xpt_action(ccb);
9cf9a798 2448
984263bc
MD
2449 /* scan is now in progress */
2450}
2451
2452static void
2453ciss_cam_rescan_all(struct ciss_softc *sc)
2454{
9cf9a798
SW
2455 int i;
2456
2457 /* Rescan the logical buses */
2458 for (i = 0; i < sc->ciss_max_logical_bus; i++)
2459 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD);
2460 /* Rescan the physical buses */
2461 for (i = CISS_PHYSICAL_BASE; i < sc->ciss_max_physical_bus +
2462 CISS_PHYSICAL_BASE; i++)
2463 ciss_cam_rescan_target(sc, i, CAM_TARGET_WILDCARD);
984263bc
MD
2464}
2465
2466static void
2467ciss_cam_rescan_callback(struct cam_periph *periph, union ccb *ccb)
2468{
2469 xpt_free_path(ccb->ccb_h.path);
efda3bd0 2470 kfree(ccb, M_TEMP);
984263bc
MD
2471}
2472
2473/************************************************************************
2474 * Handle requests coming from CAM
2475 */
2476static void
2477ciss_cam_action(struct cam_sim *sim, union ccb *ccb)
2478{
2479 struct ciss_softc *sc;
2480 struct ccb_scsiio *csio;
9cf9a798
SW
2481 int bus, target;
2482 int physical;
984263bc
MD
2483
2484 sc = cam_sim_softc(sim);
9cf9a798 2485 bus = cam_sim_bus(sim);
984263bc
MD
2486 csio = (struct ccb_scsiio *)&ccb->csio;
2487 target = csio->ccb_h.target_id;
9cf9a798 2488 physical = CISS_IS_PHYSICAL(bus);
984263bc
MD
2489
2490 switch (ccb->ccb_h.func_code) {
2491
2492 /* perform SCSI I/O */
2493 case XPT_SCSI_IO:
2494 if (!ciss_cam_action_io(sim, csio))
2495 return;
2496 break;
2497
2498 /* perform geometry calculations */
2499 case XPT_CALC_GEOMETRY:
2500 {
2501 struct ccb_calc_geometry *ccg = &ccb->ccg;
9cf9a798 2502 struct ciss_ldrive *ld;
984263bc
MD
2503
2504 debug(1, "XPT_CALC_GEOMETRY %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2505
9cf9a798
SW
2506 ld = NULL;
2507 if (!physical)
2508 ld = &sc->ciss_logical[bus][target];
2509
984263bc
MD
2510 /*
2511 * Use the cached geometry settings unless the fault tolerance
2512 * is invalid.
2513 */
9cf9a798 2514 if (physical || ld->cl_geometry.fault_tolerance == 0xFF) {
984263bc
MD
2515 u_int32_t secs_per_cylinder;
2516
2517 ccg->heads = 255;
2518 ccg->secs_per_track = 32;
2519 secs_per_cylinder = ccg->heads * ccg->secs_per_track;
2520 ccg->cylinders = ccg->volume_size / secs_per_cylinder;
2521 } else {
2522 ccg->heads = ld->cl_geometry.heads;
2523 ccg->secs_per_track = ld->cl_geometry.sectors;
2524 ccg->cylinders = ntohs(ld->cl_geometry.cylinders);
2525 }
2526 ccb->ccb_h.status = CAM_REQ_CMP;
2527 break;
2528 }
2529
2530 /* handle path attribute inquiry */
2531 case XPT_PATH_INQ:
2532 {
2533 struct ccb_pathinq *cpi = &ccb->cpi;
2534
2535 debug(1, "XPT_PATH_INQ %d:%d:%d", cam_sim_bus(sim), ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
2536
2537 cpi->version_num = 1;
2538 cpi->hba_inquiry = PI_TAG_ABLE; /* XXX is this correct? */
2539 cpi->target_sprt = 0;
2540 cpi->hba_misc = 0;
2541 cpi->max_target = CISS_MAX_LOGICAL;
2542 cpi->max_lun = 0; /* 'logical drive' channel only */
2543 cpi->initiator_id = CISS_MAX_LOGICAL;
2544 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
2545 strncpy(cpi->hba_vid, "msmith@freebsd.org", HBA_IDLEN);
2546 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
2547 cpi->unit_number = cam_sim_unit(sim);
2548 cpi->bus_id = cam_sim_bus(sim);
2549 cpi->base_transfer_speed = 132 * 1024; /* XXX what to set this to? */
f19fcfb0
PA
2550 cpi->transport = XPORT_SPI;
2551 cpi->transport_version = 2;
2552 cpi->protocol = PROTO_SCSI;
2553 cpi->protocol_version = SCSI_REV_2;
984263bc
MD
2554 ccb->ccb_h.status = CAM_REQ_CMP;
2555 break;
2556 }
2557
2558 case XPT_GET_TRAN_SETTINGS:
2559 {
2560 struct ccb_trans_settings *cts = &ccb->cts;
2561 int bus, target;
f19fcfb0
PA
2562 struct ccb_trans_settings_spi *spi =
2563 &cts->xport_specific.spi;
984263bc
MD
2564
2565 bus = cam_sim_bus(sim);
2566 target = cts->ccb_h.target_id;
2567
2568 debug(1, "XPT_GET_TRAN_SETTINGS %d:%d", bus, target);
984263bc 2569 /* disconnect always OK */
f19fcfb0
PA
2570 cts->protocol = PROTO_SCSI;
2571 cts->protocol_version = SCSI_REV_2;
2572 cts->transport = XPORT_SPI;
2573 cts->transport_version = 2;
2574
2575 spi->valid = CTS_SPI_VALID_DISC;
2576 spi->flags = CTS_SPI_FLAGS_DISC_ENB;
984263bc
MD
2577
2578 cts->ccb_h.status = CAM_REQ_CMP;
2579 break;
2580 }
2581
2582 default: /* we can't do this */
3f625015 2583 debug(1, "unsupported func_code = 0x%x", ccb->ccb_h.func_code);
984263bc
MD
2584 ccb->ccb_h.status = CAM_REQ_INVALID;
2585 break;
2586 }
2587
2588 xpt_done(ccb);
2589}
2590
2591/************************************************************************
2592 * Handle a CAM SCSI I/O request.
2593 */
2594static int
2595ciss_cam_action_io(struct cam_sim *sim, struct ccb_scsiio *csio)
2596{
2597 struct ciss_softc *sc;
2598 int bus, target;
2599 struct ciss_request *cr;
2600 struct ciss_command *cc;
2601 int error;
2602
2603 sc = cam_sim_softc(sim);
2604 bus = cam_sim_bus(sim);
2605 target = csio->ccb_h.target_id;
2606
2607 debug(2, "XPT_SCSI_IO %d:%d:%d", bus, target, csio->ccb_h.target_lun);
2608
984263bc
MD
2609 /* check that the CDB pointer is not to a physical address */
2610 if ((csio->ccb_h.flags & CAM_CDB_POINTER) && (csio->ccb_h.flags & CAM_CDB_PHYS)) {
2611 debug(3, " CDB pointer is to physical address");
2612 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2613 }
2614
2615 /* if there is data transfer, it must be to/from a virtual address */
2616 if ((csio->ccb_h.flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
2617 if (csio->ccb_h.flags & CAM_DATA_PHYS) { /* we can't map it */
2618 debug(3, " data pointer is to physical address");
2619 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2620 }
2621 if (csio->ccb_h.flags & CAM_SCATTER_VALID) { /* we want to do the s/g setup */
2622 debug(3, " data has premature s/g setup");
2623 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2624 }
2625 }
2626
2627 /* abandon aborted ccbs or those that have failed validation */
2628 if ((csio->ccb_h.status & CAM_STATUS_MASK) != CAM_REQ_INPROG) {
2629 debug(3, "abandoning CCB due to abort/validation failure");
2630 return(EINVAL);
2631 }
2632
2633 /* handle emulation of some SCSI commands ourself */
2634 if (ciss_cam_emulate(sc, csio))
2635 return(0);
2636
2637 /*
2638 * Get a request to manage this command. If we can't, return the
2639 * ccb, freeze the queue and flag so that we unfreeze it when a
2640 * request completes.
2641 */
2642 if ((error = ciss_get_request(sc, &cr)) != 0) {
9cf9a798 2643 xpt_freeze_simq(sim, 1);
984263bc
MD
2644 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2645 return(error);
2646 }
2647
2648 /*
2649 * Build the command.
2650 */
2651 cc = CISS_FIND_COMMAND(cr);
2652 cr->cr_data = csio->data_ptr;
2653 cr->cr_length = csio->dxfer_len;
2654 cr->cr_complete = ciss_cam_complete;
2655 cr->cr_private = csio;
9cf9a798
SW
2656
2657 /*
2658 * Target the right logical volume.
2659 */
2660 if (CISS_IS_PHYSICAL(bus))
2661 cc->header.address =
2662 sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_address;
2663 else
2664 cc->header.address =
2665 sc->ciss_logical[bus][target].cl_address;
984263bc
MD
2666 cc->cdb.cdb_length = csio->cdb_len;
2667 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
2668 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE; /* XXX ordered tags? */
2669 if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_OUT) {
2670 cr->cr_flags = CISS_REQ_DATAOUT;
2671 cc->cdb.direction = CISS_CDB_DIRECTION_WRITE;
2672 } else if ((csio->ccb_h.flags & CAM_DIR_MASK) == CAM_DIR_IN) {
2673 cr->cr_flags = CISS_REQ_DATAIN;
2674 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
2675 } else {
2676 cr->cr_flags = 0;
2677 cc->cdb.direction = CISS_CDB_DIRECTION_NONE;
2678 }
2679 cc->cdb.timeout = (csio->ccb_h.timeout / 1000) + 1;
2680 if (csio->ccb_h.flags & CAM_CDB_POINTER) {
2681 bcopy(csio->cdb_io.cdb_ptr, &cc->cdb.cdb[0], csio->cdb_len);
2682 } else {
2683 bcopy(csio->cdb_io.cdb_bytes, &cc->cdb.cdb[0], csio->cdb_len);
2684 }
2685
2686 /*
2687 * Submit the request to the adapter.
2688 *
2689 * Note that this may fail if we're unable to map the request (and
2690 * if we ever learn a transport layer other than simple, may fail
2691 * if the adapter rejects the command).
2692 */
2693 if ((error = ciss_start(cr)) != 0) {
9cf9a798
SW
2694 xpt_freeze_simq(sim, 1);
2695 if (error == EINPROGRESS) {
2696 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
2697 error = 0;
2698 } else {
2699 csio->ccb_h.status |= CAM_REQUEUE_REQ;
2700 ciss_release_request(cr);
2701 }
984263bc
MD
2702 return(error);
2703 }
9cf9a798 2704
984263bc
MD
2705 return(0);
2706}
2707
2708/************************************************************************
2709 * Emulate SCSI commands the adapter doesn't handle as we might like.
2710 */
2711static int
2712ciss_cam_emulate(struct ciss_softc *sc, struct ccb_scsiio *csio)
2713{
9cf9a798 2714 int bus, target;
984263bc 2715 u_int8_t opcode;
9cf9a798 2716
984263bc 2717 target = csio->ccb_h.target_id;
9cf9a798
SW
2718 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
2719 opcode = (csio->ccb_h.flags & CAM_CDB_POINTER) ?
984263bc
MD
2720 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0];
2721
9cf9a798
SW
2722 if (CISS_IS_PHYSICAL(bus)) {
2723 if (sc->ciss_physical[CISS_CAM_TO_PBUS(bus)][target].cp_online != 1) {
2724 csio->ccb_h.status = CAM_SEL_TIMEOUT;
2725 xpt_done((union ccb *)csio);
2726 return(1);
2727 } else
2728 return(0);
2729 }
2730
984263bc 2731 /*
9cf9a798
SW
2732 * Handle requests for volumes that don't exist or are not online.
2733 * A selection timeout is slightly better than an illegal request.
2734 * Other errors might be better.
984263bc 2735 */
9cf9a798 2736 if (sc->ciss_logical[bus][target].cl_status != CISS_LD_ONLINE) {
984263bc
MD
2737 csio->ccb_h.status = CAM_SEL_TIMEOUT;
2738 xpt_done((union ccb *)csio);
2739 return(1);
2740 }
2741
984263bc
MD
2742 /* if we have to fake Synchronise Cache */
2743 if (sc->ciss_flags & CISS_FLAG_FAKE_SYNCH) {
984263bc
MD
2744 /*
2745 * If this is a Synchronise Cache command, typically issued when
2746 * a device is closed, flush the adapter and complete now.
2747 */
9cf9a798 2748 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
984263bc
MD
2749 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == SYNCHRONIZE_CACHE) {
2750 ciss_flush_adapter(sc);
2751 csio->ccb_h.status = CAM_REQ_CMP;
2752 xpt_done((union ccb *)csio);
2753 return(1);
2754 }
2755 }
2756
2757 return(0);
2758}
2759
2760/************************************************************************
2761 * Check for possibly-completed commands.
2762 */
2763static void
2764ciss_cam_poll(struct cam_sim *sim)
2765{
2766 struct ciss_softc *sc = cam_sim_softc(sim);
2767
2768 debug_called(2);
2769
2770 ciss_done(sc);
2771}
2772
2773/************************************************************************
2774 * Handle completion of a command - pass results back through the CCB
2775 */
2776static void
2777ciss_cam_complete(struct ciss_request *cr)
2778{
2779 struct ciss_softc *sc;
2780 struct ciss_command *cc;
2781 struct ciss_error_info *ce;
2782 struct ccb_scsiio *csio;
2783 int scsi_status;
2784 int command_status;
2785
2786 debug_called(2);
2787
2788 sc = cr->cr_sc;
2789 cc = CISS_FIND_COMMAND(cr);
2790 ce = (struct ciss_error_info *)&(cc->sg[0]);
2791 csio = (struct ccb_scsiio *)cr->cr_private;
2792
2793 /*
2794 * Extract status values from request.
2795 */
2796 ciss_report_request(cr, &command_status, &scsi_status);
2797 csio->scsi_status = scsi_status;
9cf9a798 2798
984263bc
MD
2799 /*
2800 * Handle specific SCSI status values.
2801 */
2802 switch(scsi_status) {
2803 /* no status due to adapter error */
9cf9a798 2804 case -1:
984263bc
MD
2805 debug(0, "adapter error");
2806 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2807 break;
9cf9a798 2808
984263bc
MD
2809 /* no status due to command completed OK */
2810 case SCSI_STATUS_OK: /* CISS_SCSI_STATUS_GOOD */
2811 debug(2, "SCSI_STATUS_OK");
2812 csio->ccb_h.status = CAM_REQ_CMP;
2813 break;
2814
2815 /* check condition, sense data included */
2816 case SCSI_STATUS_CHECK_COND: /* CISS_SCSI_STATUS_CHECK_CONDITION */
9cf9a798 2817 debug(0, "SCSI_STATUS_CHECK_COND sense size %d resid %d\n",
984263bc
MD
2818 ce->sense_length, ce->residual_count);
2819 bzero(&csio->sense_data, SSD_FULL_SIZE);
2820 bcopy(&ce->sense_info[0], &csio->sense_data, ce->sense_length);
2821 csio->sense_len = ce->sense_length;
9cf9a798 2822 csio->resid = ce->residual_count;
984263bc
MD
2823 csio->ccb_h.status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
2824#ifdef CISS_DEBUG
2825 {
2826 struct scsi_sense_data *sns = (struct scsi_sense_data *)&ce->sense_info[0];
2827 debug(0, "sense key %x", sns->flags & SSD_KEY);
2828 }
9cf9a798 2829#endif
984263bc
MD
2830 break;
2831
2832 case SCSI_STATUS_BUSY: /* CISS_SCSI_STATUS_BUSY */
2833 debug(0, "SCSI_STATUS_BUSY");
2834 csio->ccb_h.status = CAM_SCSI_BUSY;
2835 break;
2836
2837 default:
2838 debug(0, "unknown status 0x%x", csio->scsi_status);
2839 csio->ccb_h.status = CAM_REQ_CMP_ERR;
2840 break;
2841 }
2842
2843 /* handle post-command fixup */
2844 ciss_cam_complete_fixup(sc, csio);
2845
2846 /* tell CAM we're ready for more commands */
2847 csio->ccb_h.status |= CAM_RELEASE_SIMQ;
2848
2849 xpt_done((union ccb *)csio);
2850 ciss_release_request(cr);
2851}
2852
2853/********************************************************************************
2854 * Fix up the result of some commands here.
2855 */
2856static void
2857ciss_cam_complete_fixup(struct ciss_softc *sc, struct ccb_scsiio *csio)
2858{
2859 struct scsi_inquiry_data *inq;
2860 struct ciss_ldrive *cl;
9cf9a798 2861 int bus, target;
984263bc 2862
9cf9a798 2863 if (((csio->ccb_h.flags & CAM_CDB_POINTER) ?
984263bc
MD
2864 *(u_int8_t *)csio->cdb_io.cdb_ptr : csio->cdb_io.cdb_bytes[0]) == INQUIRY) {
2865
2866 inq = (struct scsi_inquiry_data *)csio->data_ptr;
2867 target = csio->ccb_h.target_id;
9cf9a798
SW
2868 bus = cam_sim_bus(xpt_path_sim(csio->ccb_h.path));
2869
2870 /*
2871 * Don't let hard drives be seen by the DA driver. They will still be
2872 * attached by the PASS driver.
2873 */
2874 if (CISS_IS_PHYSICAL(bus)) {
2875 if (SID_TYPE(inq) == T_DIRECT)
2876 inq->device = (inq->device & 0xe0) | T_NODEVICE;
2877 return;
2878 }
2879
2880 cl = &sc->ciss_logical[bus][target];
2881
984263bc
MD
2882 padstr(inq->vendor, "COMPAQ", 8);
2883 padstr(inq->product, ciss_name_ldrive_org(cl->cl_ldrive->fault_tolerance), 8);
2884 padstr(inq->revision, ciss_name_ldrive_status(cl->cl_lstatus->status), 16);
2885 }
2886}
2887
2888
2889/********************************************************************************
2890 * Find a peripheral attached at (target)
2891 */
2892static struct cam_periph *
9cf9a798 2893ciss_find_periph(struct ciss_softc *sc, int bus, int target)
984263bc
MD
2894{
2895 struct cam_periph *periph;
2896 struct cam_path *path;
2897 int status;
2898
9cf9a798
SW
2899 status = xpt_create_path(&path, NULL, cam_sim_path(sc->ciss_cam_sim[bus]),
2900 target, 0);
984263bc
MD
2901 if (status == CAM_REQ_CMP) {
2902 periph = cam_periph_find(path, NULL);
2903 xpt_free_path(path);
2904 } else {
2905 periph = NULL;
2906 }
2907 return(periph);
2908}
2909
2910/********************************************************************************
2911 * Name the device at (target)
2912 *
2913 * XXX is this strictly correct?
2914 */
9cf9a798
SW
2915static int
2916ciss_name_device(struct ciss_softc *sc, int bus, int target)
984263bc
MD
2917{
2918 struct cam_periph *periph;
2919
9cf9a798
SW
2920 if (CISS_IS_PHYSICAL(bus))
2921 return (0);
2922 if ((periph = ciss_find_periph(sc, bus, target)) != NULL) {
2923 ksprintf(sc->ciss_logical[bus][target].cl_name, "%s%d",
2924 periph->periph_name, periph->unit_number);
984263bc
MD
2925 return(0);
2926 }
9cf9a798 2927 sc->ciss_logical[bus][target].cl_name[0] = 0;
984263bc
MD
2928 return(ENOENT);
2929}
2930
2931/************************************************************************
2932 * Periodic status monitoring.
2933 */
2934static void
2935ciss_periodic(void *arg)
2936{
2937 struct ciss_softc *sc;
2938
2939 debug_called(1);
9cf9a798 2940
984263bc
MD
2941 sc = (struct ciss_softc *)arg;
2942
2943 /*
2944 * Check the adapter heartbeat.
2945 */
2946 if (sc->ciss_cfg->heartbeat == sc->ciss_heartbeat) {
2947 sc->ciss_heart_attack++;
9cf9a798 2948 debug(0, "adapter heart attack in progress 0x%x/%d",
984263bc
MD
2949 sc->ciss_heartbeat, sc->ciss_heart_attack);
2950 if (sc->ciss_heart_attack == 3) {
2951 ciss_printf(sc, "ADAPTER HEARTBEAT FAILED\n");
2952 /* XXX should reset adapter here */
2953 }
2954 } else {
2955 sc->ciss_heartbeat = sc->ciss_cfg->heartbeat;
2956 sc->ciss_heart_attack = 0;
2957 debug(3, "new heartbeat 0x%x", sc->ciss_heartbeat);
2958 }
9cf9a798 2959
984263bc
MD
2960 /*
2961 * If the notify event request has died for some reason, or has
2962 * not started yet, restart it.
2963 */
2964 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK)) {
2965 debug(0, "(re)starting Event Notify chain");
2966 ciss_notify_event(sc);
2967 }
2968
2969 /*
2970 * Reschedule.
2971 */
2972 if (!(sc->ciss_flags & CISS_FLAG_ABORTING))
3fb01875
JS
2973 callout_reset(&sc->ciss_periodic, CISS_HEARTBEAT_RATE * hz,
2974 ciss_periodic, sc);
984263bc
MD
2975}
2976
2977/************************************************************************
2978 * Request a notification response from the adapter.
2979 *
2980 * If (cr) is NULL, this is the first request of the adapter, so
2981 * reset the adapter's message pointer and start with the oldest
2982 * message available.
2983 */
2984static void
2985ciss_notify_event(struct ciss_softc *sc)
2986{
2987 struct ciss_request *cr;
2988 struct ciss_command *cc;
2989 struct ciss_notify_cdb *cnc;
2990 int error;
2991
2992 debug_called(1);
2993
2994 cr = sc->ciss_periodic_notify;
9cf9a798 2995
984263bc
MD
2996 /* get a request if we don't already have one */
2997 if (cr == NULL) {
2998 if ((error = ciss_get_request(sc, &cr)) != 0) {
2999 debug(0, "can't get notify event request");
3000 goto out;
3001 }
3002 sc->ciss_periodic_notify = cr;
3003 cr->cr_complete = ciss_notify_complete;
3004 debug(1, "acquired request %d", cr->cr_tag);
3005 }
9cf9a798
SW
3006
3007 /*
984263bc
MD
3008 * Get a databuffer if we don't already have one, note that the
3009 * adapter command wants a larger buffer than the actual
3010 * structure.
3011 */
3012 if (cr->cr_data == NULL) {
efda3bd0 3013 cr->cr_data = kmalloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_INTWAIT);
984263bc
MD
3014 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
3015 }
3016
3017 /* re-setup the request's command (since we never release it) XXX overkill*/
3018 ciss_preen_command(cr);
3019
3020 /* (re)build the notify event command */
3021 cc = CISS_FIND_COMMAND(cr);
3022 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3023 cc->header.address.physical.bus = 0;
3024 cc->header.address.physical.target = 0;
3025
3026 cc->cdb.cdb_length = sizeof(*cnc);
3027 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3028 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3029 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3030 cc->cdb.timeout = 0; /* no timeout, we hope */
9cf9a798 3031
984263bc
MD
3032 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3033 bzero(cr->cr_data, CISS_NOTIFY_DATA_SIZE);
3034 cnc->opcode = CISS_OPCODE_READ;
3035 cnc->command = CISS_COMMAND_NOTIFY_ON_EVENT;
3036 cnc->timeout = 0; /* no timeout, we hope */
3037 cnc->synchronous = 0;
3038 cnc->ordered = 0;
3039 cnc->seek_to_oldest = 0;
9cf9a798
SW
3040 if ((sc->ciss_flags & CISS_FLAG_RUNNING) == 0)
3041 cnc->new_only = 1;
3042 else
3043 cnc->new_only = 0;
984263bc
MD
3044 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3045
3046 /* submit the request */
3047 error = ciss_start(cr);
3048
3049 out:
3050 if (error) {
3051 if (cr != NULL) {
3052 if (cr->cr_data != NULL)
efda3bd0 3053 kfree(cr->cr_data, CISS_MALLOC_CLASS);
984263bc
MD
3054 ciss_release_request(cr);
3055 }
3056 sc->ciss_periodic_notify = NULL;
3057 debug(0, "can't submit notify event request");
3058 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3059 } else {
3060 debug(1, "notify event submitted");
3061 sc->ciss_flags |= CISS_FLAG_NOTIFY_OK;
3062 }
3063}
3064
3065static void
3066ciss_notify_complete(struct ciss_request *cr)
3067{
3068 struct ciss_command *cc;
3069 struct ciss_notify *cn;
3070 struct ciss_softc *sc;
3071 int scsi_status;
3072 int command_status;
984263bc 3073 debug_called(1);
9cf9a798 3074
984263bc
MD
3075 cc = CISS_FIND_COMMAND(cr);
3076 cn = (struct ciss_notify *)cr->cr_data;
3077 sc = cr->cr_sc;
9cf9a798 3078
984263bc
MD
3079 /*
3080 * Report request results, decode status.
3081 */
3082 ciss_report_request(cr, &command_status, &scsi_status);
3083
3084 /*
3085 * Abort the chain on a fatal error.
3086 *
3087 * XXX which of these are actually errors?
3088 */
3089 if ((command_status != CISS_CMD_STATUS_SUCCESS) &&
3090 (command_status != CISS_CMD_STATUS_TARGET_STATUS) &&
3091 (command_status != CISS_CMD_STATUS_TIMEOUT)) { /* XXX timeout? */
3092 ciss_printf(sc, "fatal error in Notify Event request (%s)\n",
3093 ciss_name_command_status(command_status));
3094 ciss_release_request(cr);
3095 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3096 return;
3097 }
3098
9cf9a798 3099 /*
984263bc
MD
3100 * If the adapter gave us a text message, print it.
3101 */
3102 if (cn->message[0] != 0)
3103 ciss_printf(sc, "*** %.80s\n", cn->message);
3104
3105 debug(0, "notify event class %d subclass %d detail %d",
3106 cn->class, cn->subclass, cn->detail);
3107
3108 /*
984263bc
MD
3109 * If the response indicates that the notifier has been aborted,
3110 * release the notifier command.
3111 */
3112 if ((cn->class == CISS_NOTIFY_NOTIFIER) &&
3113 (cn->subclass == CISS_NOTIFY_NOTIFIER_STATUS) &&
3114 (cn->detail == 1)) {
3115 debug(0, "notifier exiting");
3116 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3117 ciss_release_request(cr);
3118 sc->ciss_periodic_notify = NULL;
3119 wakeup(&sc->ciss_periodic_notify);
9cf9a798
SW
3120 } else {
3121 /* Handle notify events in a kernel thread */
3122 ciss_enqueue_notify(cr);
3123 sc->ciss_periodic_notify = NULL;
3124 wakeup(&sc->ciss_periodic_notify);
3125 wakeup(&sc->ciss_notify);
984263bc 3126 }
984263bc
MD
3127 /*
3128 * Send a new notify event command, if we're not aborting.
3129 */
3130 if (!(sc->ciss_flags & CISS_FLAG_ABORTING)) {
3131 ciss_notify_event(sc);
3132 }
3133}
3134
3135/************************************************************************
3136 * Abort the Notify Event chain.
3137 *
3138 * Note that we can't just abort the command in progress; we have to
3139 * explicitly issue an Abort Notify Event command in order for the
3140 * adapter to clean up correctly.
3141 *
3142 * If we are called with CISS_FLAG_ABORTING set in the adapter softc,
3143 * the chain will not restart itself.
3144 */
3145static int
3146ciss_notify_abort(struct ciss_softc *sc)
3147{
3148 struct ciss_request *cr;
3149 struct ciss_command *cc;
3150 struct ciss_notify_cdb *cnc;
7f2216bc 3151 int error, command_status, scsi_status;
984263bc
MD
3152
3153 debug_called(1);
3154
3155 cr = NULL;
3156 error = 0;
9cf9a798 3157
984263bc
MD
3158 /* verify that there's an outstanding command */
3159 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3160 goto out;
9cf9a798 3161
984263bc
MD
3162 /* get a command to issue the abort with */
3163 if ((error = ciss_get_request(sc, &cr)))
3164 goto out;
3165
3166 /* get a buffer for the result */
efda3bd0 3167 cr->cr_data = kmalloc(CISS_NOTIFY_DATA_SIZE, CISS_MALLOC_CLASS, M_INTWAIT);
984263bc 3168 cr->cr_length = CISS_NOTIFY_DATA_SIZE;
9cf9a798 3169
984263bc
MD
3170 /* build the CDB */
3171 cc = CISS_FIND_COMMAND(cr);
3172 cc->header.address.physical.mode = CISS_HDR_ADDRESS_MODE_PERIPHERAL;
3173 cc->header.address.physical.bus = 0;
3174 cc->header.address.physical.target = 0;
3175 cc->cdb.cdb_length = sizeof(*cnc);
3176 cc->cdb.type = CISS_CDB_TYPE_COMMAND;
3177 cc->cdb.attribute = CISS_CDB_ATTRIBUTE_SIMPLE;
3178 cc->cdb.direction = CISS_CDB_DIRECTION_READ;
3179 cc->cdb.timeout = 0; /* no timeout, we hope */
9cf9a798 3180
984263bc
MD
3181 cnc = (struct ciss_notify_cdb *)&(cc->cdb.cdb[0]);
3182 bzero(cnc, sizeof(*cnc));
3183 cnc->opcode = CISS_OPCODE_WRITE;
3184 cnc->command = CISS_COMMAND_ABORT_NOTIFY;
3185 cnc->length = htonl(CISS_NOTIFY_DATA_SIZE);
3186
3187 ciss_print_request(cr);
9cf9a798 3188
984263bc
MD
3189 /*
3190 * Submit the request and wait for it to complete.
3191 */
3192 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3193 ciss_printf(sc, "Abort Notify Event command failed (%d)\n", error);
3194 goto out;
3195 }
3196
3197 /*
3198 * Check response.
3199 */
3200 ciss_report_request(cr, &command_status, &scsi_status);
3201 switch(command_status) {
3202 case CISS_CMD_STATUS_SUCCESS:
3203 break;
3204 case CISS_CMD_STATUS_INVALID_COMMAND:
3205 /*
3206 * Some older adapters don't support the CISS version of this
3207 * command. Fall back to using the BMIC version.
3208 */
3209 error = ciss_notify_abort_bmic(sc);
3210 if (error != 0)
3211 goto out;
3212 break;
9cf9a798 3213
984263bc
MD
3214 case CISS_CMD_STATUS_TARGET_STATUS:
3215 /*
3216 * This can happen if the adapter thinks there wasn't an outstanding
3217 * Notify Event command but we did. We clean up here.
3218 */
3219 if (scsi_status == CISS_SCSI_STATUS_CHECK_CONDITION) {
3220 if (sc->ciss_periodic_notify != NULL)
3221 ciss_release_request(sc->ciss_periodic_notify);
3222 error = 0;
3223 goto out;
3224 }
3225 /* FALLTHROUGH */
9cf9a798 3226
984263bc
MD
3227 default:
3228 ciss_printf(sc, "Abort Notify Event command failed (%s)\n",
3229 ciss_name_command_status(command_status));
3230 error = EIO;
3231 goto out;
3232 }
9cf9a798 3233
984263bc
MD
3234 /*
3235 * Sleep waiting for the notifier command to complete. Note
3236 * that if it doesn't, we may end up in a bad situation, since
3237 * the adapter may deliver it later. Also note that the adapter
3238 * requires the Notify Event command to be cancelled in order to
3239 * maintain internal bookkeeping.
3240 */
7f2216bc 3241 crit_enter();
984263bc
MD
3242 while (sc->ciss_periodic_notify != NULL) {
3243 error = tsleep(&sc->ciss_periodic_notify, 0, "cissNEA", hz * 5);
3244 if (error == EWOULDBLOCK) {
3245 ciss_printf(sc, "Notify Event command failed to abort, adapter may wedge.\n");
3246 break;
3247 }
3248 }
7f2216bc 3249 crit_exit();
984263bc
MD
3250
3251 out:
3252 /* release the cancel request */
3253 if (cr != NULL) {
3254 if (cr->cr_data != NULL)
efda3bd0 3255 kfree(cr->cr_data, CISS_MALLOC_CLASS);
984263bc
MD
3256 ciss_release_request(cr);
3257 }
3258 if (error == 0)
3259 sc->ciss_flags &= ~CISS_FLAG_NOTIFY_OK;
3260 return(error);
3261}
3262
3263/************************************************************************
3264 * Abort the Notify Event chain using a BMIC command.
3265 */
3266static int
3267ciss_notify_abort_bmic(struct ciss_softc *sc)
3268{
3269 struct ciss_request *cr;
3270 int error, command_status;
3271
3272 debug_called(1);
3273
3274 cr = NULL;
3275 error = 0;
3276
3277 /* verify that there's an outstanding command */
3278 if (!(sc->ciss_flags & CISS_FLAG_NOTIFY_OK))
3279 goto out;
9cf9a798 3280
984263bc
MD
3281 /*
3282 * Build a BMIC command to cancel the Notify on Event command.
3283 *
3284 * Note that we are sending a CISS opcode here. Odd.
3285 */
3286 if ((error = ciss_get_bmic_request(sc, &cr, CISS_COMMAND_ABORT_NOTIFY,
3287 NULL, 0)) != 0)
3288 goto out;
3289
3290 /*
3291 * Submit the request and wait for it to complete.
3292 */
3293 if ((error = ciss_synch_request(cr, 60 * 1000)) != 0) {
3294 ciss_printf(sc, "error sending BMIC Cancel Notify on Event command (%d)\n", error);
3295 goto out;
3296 }
9cf9a798 3297
984263bc
MD
3298 /*
3299 * Check response.
3300 */
3301 ciss_report_request(cr, &command_status, NULL);
3302 switch(command_status) {
3303 case CISS_CMD_STATUS_SUCCESS:
3304 break;
3305 default:
9cf9a798 3306 ciss_printf(sc, "error cancelling Notify on Event (%s)\n",
984263bc
MD
3307 ciss_name_command_status(command_status));
3308 error = EIO;
3309 goto out;
3310 }
3311
3312out:
3313 if (cr != NULL)
3314 ciss_release_request(cr);
3315 return(error);
3316}
3317
3318/************************************************************************
9cf9a798
SW
3319 * Handle rescanning all the logical volumes when a notify event
3320 * causes the drives to come online or offline.
3321 */
3322static void
3323ciss_notify_rescan_logical(struct ciss_softc *sc)
3324{
3325 struct ciss_lun_report *cll;
3326 struct ciss_ldrive *ld;
3327 int i, j, ndrives;
3328
3329 /*
3330 * We must rescan all logical volumes to get the right logical
3331 * drive address.
3332 */
3333 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_LOGICAL_LUNS,
3334 CISS_MAX_LOGICAL);
3335 if (cll == NULL)
3336 return;
3337
3338 ndrives = (ntohl(cll->list_size) / sizeof(union ciss_device_address));
3339
3340 /*
3341 * Delete any of the drives which were destroyed by the
3342 * firmware.
3343 */
3344 for (i = 0; i < sc->ciss_max_logical_bus; i++) {
3345 for (j = 0; j < CISS_MAX_LOGICAL; j++) {
3346 ld = &sc->ciss_logical[i][j];
3347
3348 if (ld->cl_update == 0)
3349 continue;
3350
3351 if (ld->cl_status != CISS_LD_ONLINE) {
3352 ciss_cam_rescan_target(sc, i, j);
3353 ld->cl_update = 0;
3354 if (ld->cl_ldrive)
3355 kfree(ld->cl_ldrive, CISS_MALLOC_CLASS);
3356 if (ld->cl_lstatus)
3357 kfree(ld->cl_lstatus, CISS_MALLOC_CLASS);
3358
3359 ld->cl_ldrive = NULL;
3360 ld->cl_lstatus = NULL;
3361 }
3362 }
3363 }
3364
3365 /*
3366 * Scan for new drives.
3367 */
3368 for (i = 0; i < ndrives; i++) {
3369 int bus, target;
3370
3371 bus = CISS_LUN_TO_BUS(cll->lun[i].logical.lun);
3372 target = CISS_LUN_TO_TARGET(cll->lun[i].logical.lun);
3373 ld = &sc->ciss_logical[bus][target];
3374
3375 if (ld->cl_update == 0)
3376 continue;
3377
3378 ld->cl_update = 0;
3379 ld->cl_address = cll->lun[i];
3380 ld->cl_controller = &sc->ciss_controllers[bus];
3381 if (ciss_identify_logical(sc, ld) == 0) {
3382 ciss_cam_rescan_target(sc, bus, target);
3383 }
3384 }
3385 kfree(cll, CISS_MALLOC_CLASS);
3386}
3387
3388/************************************************************************
984263bc
MD
3389 * Handle a notify event relating to the status of a logical drive.
3390 *
3391 * XXX need to be able to defer some of these to properly handle
3392 * calling the "ID Physical drive" command, unless the 'extended'
3393 * drive IDs are always in BIG_MAP format.
3394 */
3395static void
3396ciss_notify_logical(struct ciss_softc *sc, struct ciss_notify *cn)
3397{
3398 struct ciss_ldrive *ld;
9cf9a798 3399 int ostatus, bus, target;
984263bc
MD
3400
3401 debug_called(2);
3402
9cf9a798
SW
3403 bus = cn->device.physical.bus;
3404 target = cn->data.logical_status.logical_drive;
3405 ld = &sc->ciss_logical[bus][target];
984263bc
MD
3406
3407 switch (cn->subclass) {
3408 case CISS_NOTIFY_LOGICAL_STATUS:
3409 switch (cn->detail) {
3410 case 0:
9cf9a798 3411 ciss_name_device(sc, bus, target);
984263bc
MD
3412 ciss_printf(sc, "logical drive %d (%s) changed status %s->%s, spare status 0x%b\n",
3413 cn->data.logical_status.logical_drive, ld->cl_name,
3414 ciss_name_ldrive_status(cn->data.logical_status.previous_state),
3415 ciss_name_ldrive_status(cn->data.logical_status.new_state),
3416 cn->data.logical_status.spare_state,
3417 "\20\1configured\2rebuilding\3failed\4in use\5available\n");
3418
3419 /*
3420 * Update our idea of the drive's status.
3421 */
3422 ostatus = ciss_decode_ldrive_status(cn->data.logical_status.previous_state);
3423 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
3424 if (ld->cl_lstatus != NULL)
3425 ld->cl_lstatus->status = cn->data.logical_status.new_state;
3426
984263bc
MD
3427 /*
3428 * Have CAM rescan the drive if its status has changed.
3429 */
9cf9a798
SW
3430 if (ostatus != ld->cl_status) {
3431 ld->cl_update = 1;
3432 ciss_notify_rescan_logical(sc);
3433 }
984263bc
MD
3434
3435 break;
3436
3437 case 1: /* logical drive has recognised new media, needs Accept Media Exchange */
9cf9a798 3438 ciss_name_device(sc, bus, target);
984263bc
MD
3439 ciss_printf(sc, "logical drive %d (%s) media exchanged, ready to go online\n",
3440 cn->data.logical_status.logical_drive, ld->cl_name);
9cf9a798
SW
3441 ciss_accept_media(sc, ld);
3442
3443 ld->cl_update = 1;
3444 ld->cl_status = ciss_decode_ldrive_status(cn->data.logical_status.new_state);
3445 ciss_notify_rescan_logical(sc);
984263bc
MD
3446 break;
3447
3448 case 2:
3449 case 3:
3450 ciss_printf(sc, "rebuild of logical drive %d (%s) failed due to %s error\n",
3451 cn->data.rebuild_aborted.logical_drive,
9cf9a798 3452 ld->cl_name,
984263bc
MD
3453 (cn->detail == 2) ? "read" : "write");
3454 break;
3455 }
3456 break;
3457
3458 case CISS_NOTIFY_LOGICAL_ERROR:
3459 if (cn->detail == 0) {
3460 ciss_printf(sc, "FATAL I/O ERROR on logical drive %d (%s), SCSI port %d ID %d\n",
3461 cn->data.io_error.logical_drive,
9cf9a798 3462 ld->cl_name,
984263bc
MD
3463 cn->data.io_error.failure_bus,
3464 cn->data.io_error.failure_drive);
3465 /* XXX should we take the drive down at this point, or will we be told? */
3466 }
3467 break;
3468
3469 case CISS_NOTIFY_LOGICAL_SURFACE:
3470 if (cn->detail == 0)
3471 ciss_printf(sc, "logical drive %d (%s) completed consistency initialisation\n",
3472 cn->data.consistency_completed.logical_drive,
9cf9a798 3473 ld->cl_name);
984263bc
MD
3474 break;
3475 }
3476}
3477
3478/************************************************************************
3479 * Handle a notify event relating to the status of a physical drive.
3480 */
3481static void
3482ciss_notify_physical(struct ciss_softc *sc, struct ciss_notify *cn)
3483{
9cf9a798
SW
3484}
3485
3486/************************************************************************
3487 * Handle a notify event relating to the status of a physical drive.
3488 */
3489static void
3490ciss_notify_hotplug(struct ciss_softc *sc, struct ciss_notify *cn)
3491{
3492 struct ciss_lun_report *cll;
3493 int bus, target;
3494
3495 switch (cn->subclass) {
3496 case CISS_NOTIFY_HOTPLUG_PHYSICAL:
3497 case CISS_NOTIFY_HOTPLUG_NONDISK:
3498 bus = CISS_BIG_MAP_BUS(sc, cn->data.drive.big_physical_drive_number);
3499 target =
3500 CISS_BIG_MAP_TARGET(sc, cn->data.drive.big_physical_drive_number);
3501
3502 crit_enter();
3503 if (cn->detail == 0) {
3504 /*
3505 * Mark the device offline so that it'll start producing selection
3506 * timeouts to the upper layer.
3507 */
3508 sc->ciss_physical[bus][target].cp_online = 0;
3509 } else {
3510 /*
3511 * Rescan the physical lun list for new items
3512 */
3513 cll = ciss_report_luns(sc, CISS_OPCODE_REPORT_PHYSICAL_LUNS,
3514 CISS_MAX_PHYSICAL);
3515 if (cll == NULL) {
3516 ciss_printf(sc, "Warning, cannot get physical lun list\n");
3517 break;
3518 }
3519 ciss_filter_physical(sc, cll);
3520 }
3521 crit_exit();
3522 break;
3523
3524 default:
3525 ciss_printf(sc, "Unknown hotplug event %d\n", cn->subclass);
3526 return;
3527 }
3528}
3529
3530/************************************************************************
3531 * Handle deferred processing of notify events. Notify events may need
3532 * sleep which is unsafe during an interrupt.
3533 */
3534static void
3535ciss_notify_thread(void *arg)
3536{
3537 struct ciss_softc *sc;
3538 struct ciss_request *cr;
3539 struct ciss_notify *cn;
3540
3541 sc = (struct ciss_softc *)arg;
3542
3543 crit_enter();
3544 for (;;) {
3545 if (TAILQ_EMPTY(&sc->ciss_notify) != 0 &&
3546 (sc->ciss_flags & CISS_FLAG_THREAD_SHUT) == 0) {
3547 tsleep(&sc->ciss_notify, 0, "idle", 0);
3548 }
3549
3550 if (sc->ciss_flags & CISS_FLAG_THREAD_SHUT)
3551 break;
3552
3553 cr = ciss_dequeue_notify(sc);
3554 crit_exit();
3555
3556 if (cr == NULL)
3557 panic("cr null");
3558 cn = (struct ciss_notify *)cr->cr_data;
3559
3560 switch (cn->class) {
3561 case CISS_NOTIFY_HOTPLUG:
3562 ciss_notify_hotplug(sc, cn);
3563 break;
3564 case CISS_NOTIFY_LOGICAL:
3565 ciss_notify_logical(sc, cn);
3566 break;
3567 case CISS_NOTIFY_PHYSICAL:
3568 ciss_notify_physical(sc, cn);
3569 break;
3570 }
3571
3572 ciss_release_request(cr);
3573
3574 crit_enter();
3575 }
3576 sc->ciss_notify_thread = NULL;
3577 wakeup(&sc->ciss_notify_thread);
3578 crit_exit();
3579
3580 kthread_exit();
3581}
3582
3583/************************************************************************
3584 * Start the notification kernel thread.
3585 */
3586static void
3587ciss_spawn_notify_thread(struct ciss_softc *sc)
3588{
3589 if (kthread_create((void(*)(void *))ciss_notify_thread, sc,
3590 &sc->ciss_notify_thread, "ciss_notify%d",
3591 device_get_unit(sc->ciss_dev)))
3592 panic("Could not create notify thread\n");
3593}
3594
3595/************************************************************************
3596 * Kill the notification kernel thread.
3597 */
3598static void
3599ciss_kill_notify_thread(struct ciss_softc *sc)
3600{
3601
3602 if (sc->ciss_notify_thread == NULL)
3603 return;
3604
3605 sc->ciss_flags |= CISS_FLAG_THREAD_SHUT;
3606 wakeup(&sc->ciss_notify);
3607 tsleep(&sc->ciss_notify_thread, 0, "thtrm", 0);
984263bc
MD
3608}
3609
3610/************************************************************************
3611 * Print a request.
3612 */
3613static void
3614ciss_print_request(struct ciss_request *cr)
3615{
3616 struct ciss_softc *sc;
3617 struct ciss_command *cc;
3618 int i;
3619
3620 sc = cr->cr_sc;
3621 cc = CISS_FIND_COMMAND(cr);
9cf9a798 3622
984263bc
MD
3623 ciss_printf(sc, "REQUEST @ %p\n", cr);
3624 ciss_printf(sc, " data %p/%d tag %d flags %b\n",
3625 cr->cr_data, cr->cr_length, cr->cr_tag, cr->cr_flags,
3626 "\20\1mapped\2sleep\3poll\4dataout\5datain\n");
3627 ciss_printf(sc, " sg list/total %d/%d host tag 0x%x\n",
3628 cc->header.sg_in_list, cc->header.sg_total, cc->header.host_tag);
3629 switch(cc->header.address.mode.mode) {
3630 case CISS_HDR_ADDRESS_MODE_PERIPHERAL:
3631 case CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL:
3632 ciss_printf(sc, " physical bus %d target %d\n",
3633 cc->header.address.physical.bus, cc->header.address.physical.target);
3634 break;
3635 case CISS_HDR_ADDRESS_MODE_LOGICAL:
3636 ciss_printf(sc, " logical unit %d\n", cc->header.address.logical.lun);
3637 break;
3638 }
9cf9a798 3639 ciss_printf(sc, " %s cdb length %d type %s attribute %s\n",
984263bc
MD
3640 (cc->cdb.direction == CISS_CDB_DIRECTION_NONE) ? "no-I/O" :
3641 (cc->cdb.direction == CISS_CDB_DIRECTION_READ) ? "READ" :
3642 (cc->cdb.direction == CISS_CDB_DIRECTION_WRITE) ? "WRITE" : "??",
3643 cc->cdb.cdb_length,
3644 (cc->cdb.type == CISS_CDB_TYPE_COMMAND) ? "command" :
3645 (cc->cdb.type == CISS_CDB_TYPE_MESSAGE) ? "message" : "??",
3646 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_UNTAGGED) ? "untagged" :
3647 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_SIMPLE) ? "simple" :
3648 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE) ? "head-of-queue" :
3649 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_ORDERED) ? "ordered" :
3650 (cc->cdb.attribute == CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT) ? "auto-contingent" : "??");
3651 ciss_printf(sc, " %*D\n", cc->cdb.cdb_length, &cc->cdb.cdb[0], " ");
3652
3653 if (cc->header.host_tag & CISS_HDR_HOST_TAG_ERROR) {
3654 /* XXX print error info */
3655 } else {
3656 /* since we don't use chained s/g, don't support it here */
3657 for (i = 0; i < cc->header.sg_in_list; i++) {
3658 if ((i % 4) == 0)
3659 ciss_printf(sc, " ");
e3869ec7 3660 kprintf("0x%08x/%d ", (u_int32_t)cc->sg[i].address, cc->sg[i].length);
984263bc 3661 if ((((i + 1) % 4) == 0) || (i == (cc->header.sg_in_list - 1)))
e3869ec7 3662 kprintf("\n");
984263bc
MD
3663 }
3664 }
3665}
3666
3667/************************************************************************
3668 * Print information about the status of a logical drive.
3669 */
3670static void
3671ciss_print_ldrive(struct ciss_softc *sc, struct ciss_ldrive *ld)
3672{
3673 int bus, target, i;
3674
3675 if (ld->cl_lstatus == NULL) {
e3869ec7 3676 kprintf("does not exist\n");
984263bc
MD
3677 return;
3678 }
3679
3680 /* print drive status */
3681 switch(ld->cl_lstatus->status) {
3682 case CISS_LSTATUS_OK:
e3869ec7 3683 kprintf("online\n");
984263bc
MD
3684 break;
3685 case CISS_LSTATUS_INTERIM_RECOVERY:
e3869ec7 3686 kprintf("in interim recovery mode\n");
984263bc
MD
3687 break;
3688 case CISS_LSTATUS_READY_RECOVERY:
e3869ec7 3689 kprintf("ready to begin recovery\n");
984263bc
MD
3690 break;
3691 case CISS_LSTATUS_RECOVERING:
3692 bus = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
3693 target = CISS_BIG_MAP_BUS(sc, ld->cl_lstatus->drive_rebuilding);
e3869ec7 3694 kprintf("being recovered, working on physical drive %d.%d, %u blocks remaining\n",
984263bc
MD
3695 bus, target, ld->cl_lstatus->blocks_to_recover);
3696 break;
3697 case CISS_LSTATUS_EXPANDING:
e3869ec7 3698 kprintf("being expanded, %u blocks remaining\n",
984263bc
MD
3699 ld->cl_lstatus->blocks_to_recover);
3700 break;
3701 case CISS_LSTATUS_QUEUED_FOR_EXPANSION:
e3869ec7 3702 kprintf("queued for expansion\n");
984263bc
MD
3703 break;
3704 case CISS_LSTATUS_FAILED:
e3869ec7 3705 kprintf("queued for expansion\n");
984263bc
MD
3706 break;
3707 case CISS_LSTATUS_WRONG_PDRIVE:
e3869ec7 3708 kprintf("wrong physical drive inserted\n");
984263bc
MD
3709 break;
3710 case CISS_LSTATUS_MISSING_PDRIVE:
e3869ec7 3711 kprintf("missing a needed physical drive\n");