xref: /freebsd/sys/dev/ciss/cissreg.h (revision aa1a8ff2d6dbc51ef058f46f3db5a8bb77967145)
1 /*-
2  * SPDX-License-Identifier: BSD-2-Clause
3  *
4  * Copyright (c) 2001 Michael Smith
5  * All rights reserved.
6  *
7  * Redistribution and use in source and binary forms, with or without
8  * modification, are permitted provided that the following conditions
9  * are met:
10  * 1. Redistributions of source code must retain the above copyright
11  *    notice, this list of conditions and the following disclaimer.
12  * 2. Redistributions in binary form must reproduce the above copyright
13  *    notice, this list of conditions and the following disclaimer in the
14  *    documentation and/or other materials provided with the distribution.
15  *
16  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26  * SUCH DAMAGE.
27  */
28 
29 /*
30  * Structure and I/O definitions for the Command Interface for SCSI-3 Support.
31  *
32  * Data in command CDBs are in big-endian format.  All other data is little-endian.
33  * This header only supports little-endian hosts at this time.
34  */
35 
36 union ciss_device_address
37 {
38     struct 				/* MODE_PERIPHERAL and MODE_MASK_PERIPHERAL */
39     {
40 	u_int32_t	target:24;	/* SCSI target */
41 	u_int32_t	bus:6;		/* SCSI bus */
42 	u_int32_t	mode:2;		/* CISS_HDR_ADDRESS_MODE_* */
43 	u_int32_t	extra_address;	/* SCSI-3 level-2 and level-3 address bytes */
44     } physical;
45     struct 				/* MODE_LOGICAL */
46     {
47 	u_int32_t	lun:30;		/* logical device ID */
48 	u_int32_t	mode:2;		/* CISS_HDR_ADDRESS_MODE_LOGICAL */
49 	u_int32_t	:32;		/* reserved */
50     } logical;
51     struct
52     {
53 	u_int32_t	:30;
54 	u_int32_t	mode:2;
55 	u_int32_t	:32;
56     } mode;
57 };
58 #define CISS_HDR_ADDRESS_MODE_PERIPHERAL	0x0
59 #define CISS_HDR_ADDRESS_MODE_LOGICAL		0x1
60 #define CISS_HDR_ADDRESS_MODE_MASK_PERIPHERAL	0x3
61 
62 #define CISS_EXTRA_MODE2(extra)		((extra & 0xc0000000) >> 30)
63 #define CISS_EXTRA_BUS2(extra)		((extra & 0x3f000000) >> 24)
64 #define CISS_EXTRA_TARGET2(extra)	((extra & 0x00ff0000) >> 16)
65 #define CISS_EXTRA_MODE3(extra)		((extra & 0x0000c000) >> 14)
66 #define CISS_EXTRA_BUS3(extra)		((extra & 0x00003f00) >> 8)
67 #define CISS_EXTRA_TARGET3(extra)	((extra & 0x000000ff))
68 
69 struct ciss_header
70 {
71     u_int8_t	:8;			/* reserved */
72     u_int8_t	sg_in_list;		/* SG's in the command structure */
73     u_int16_t	sg_total;		/* total count of SGs for this command */
74     u_int32_t	host_tag;		/* host identifier, bits 0&1 must be clear */
75 #define CISS_HDR_HOST_TAG_ERROR	(1<<1)
76     u_int32_t	host_tag_zeroes;	/* tag is 64 bits, but interface only supports 32 */
77     union ciss_device_address address;
78 } __packed;
79 
80 struct ciss_cdb
81 {
82     u_int8_t	cdb_length;		/* valid CDB bytes */
83     u_int8_t	type:3;
84 #define CISS_CDB_TYPE_COMMAND			0
85 #define CISS_CDB_TYPE_MESSAGE			1
86     u_int8_t	attribute:3;
87 #define CISS_CDB_ATTRIBUTE_UNTAGGED		0
88 #define CISS_CDB_ATTRIBUTE_SIMPLE		4
89 #define CISS_CDB_ATTRIBUTE_HEAD_OF_QUEUE	5
90 #define CISS_CDB_ATTRIBUTE_ORDERED		6
91 #define CISS_CDB_ATTRIBUTE_AUTO_CONTINGENT	7
92     u_int8_t	direction:2;
93 #define CISS_CDB_DIRECTION_NONE			0
94 #define CISS_CDB_DIRECTION_WRITE		1
95 #define CISS_CDB_DIRECTION_READ			2
96     u_int16_t	timeout;		/* seconds */
97 #define CISS_CDB_BUFFER_SIZE	16
98     u_int8_t	cdb[CISS_CDB_BUFFER_SIZE];
99 } __packed;
100 
101 struct ciss_error_info_pointer
102 {
103     u_int64_t	error_info_address;	/* points to ciss_error_info structure */
104     u_int32_t	error_info_length;
105 } __packed;
106 
107 struct ciss_error_info
108 {
109     u_int8_t	scsi_status;
110 #define CISS_SCSI_STATUS_GOOD			0x00	/* these are scsi-standard values */
111 #define CISS_SCSI_STATUS_CHECK_CONDITION	0x02
112 #define CISS_SCSI_STATUS_CONDITION_MET		0x04
113 #define CISS_SCSI_STATUS_BUSY			0x08
114 #define CISS_SCSI_STATUS_INDETERMINATE		0x10
115 #define CISS_SCSI_STATUS_INDETERMINATE_CM	0x14
116 #define CISS_SCSI_STATUS_RESERVATION_CONFLICT	0x18
117 #define CISS_SCSI_STATUS_COMMAND_TERMINATED	0x22
118 #define CISS_SCSI_STATUS_QUEUE_FULL		0x28
119 #define CISS_SCSI_STATUS_ACA_ACTIVE		0x30
120     u_int8_t	sense_length;
121     u_int16_t	command_status;
122 #define CISS_CMD_STATUS_SUCCESS			0
123 #define CISS_CMD_STATUS_TARGET_STATUS		1
124 #define CISS_CMD_STATUS_DATA_UNDERRUN		2
125 #define CISS_CMD_STATUS_DATA_OVERRUN		3
126 #define CISS_CMD_STATUS_INVALID_COMMAND		4
127 #define CISS_CMD_STATUS_PROTOCOL_ERROR		5
128 #define CISS_CMD_STATUS_HARDWARE_ERROR		6
129 #define CISS_CMD_STATUS_CONNECTION_LOST		7
130 #define CISS_CMD_STATUS_ABORTED			8
131 #define CISS_CMD_STATUS_ABORT_FAILED		9
132 #define CISS_CMD_STATUS_UNSOLICITED_ABORT	10
133 #define CISS_CMD_STATUS_TIMEOUT			11
134 #define CISS_CMD_STATUS_UNABORTABLE		12
135     u_int32_t	residual_count;
136     union {
137 	struct {
138 	    u_int8_t	res1[3];
139 	    u_int8_t	type;
140 	    u_int32_t	error_info;
141 	} __packed common_info;
142 	struct {
143 	    u_int8_t	res1[2];
144 	    u_int8_t	offense_size;
145 	    u_int8_t	offense_offset;
146 	    u_int32_t	offense_value;
147 	} __packed invalid_command;
148     } additional_error_info;
149     u_int8_t	sense_info[0];
150 } __packed;
151 
152 struct ciss_sg_entry
153 {
154     u_int64_t	address;
155 #define CISS_SG_ADDRESS_BITBUCKET	(~(u_int64_t)0)
156     u_int32_t	length;
157     u_int32_t	:31;
158     u_int32_t	extension:1;		/* address points to another s/g chain */
159 } __packed;
160 
161 struct ciss_command
162 {
163     struct ciss_header			header;
164     struct ciss_cdb			cdb;
165     struct ciss_error_info_pointer	error_info;
166     struct ciss_sg_entry		sg[0];
167 } __packed;
168 
169 #define CISS_OPCODE_REPORT_LOGICAL_LUNS		0xc2
170 #define CISS_OPCODE_REPORT_PHYSICAL_LUNS	0xc3
171 
172 struct ciss_lun_report
173 {
174     u_int32_t	list_size;		/* big-endian */
175     u_int32_t	:32;
176     union ciss_device_address lun[0];
177 } __packed;
178 
179 #define	CISS_VPD_LOGICAL_DRIVE_GEOMETRY		0xc1
180 struct ciss_ldrive_geometry
181 {
182     u_int8_t	periph_qualifier:3;
183     u_int8_t	periph_devtype:5;
184     u_int8_t	page_code;
185     u_int8_t	res1;
186     u_int8_t	page_length;
187     u_int16_t	cylinders;		/* big-endian */
188     u_int8_t	heads;
189     u_int8_t	sectors;
190     u_int8_t	fault_tolerance;
191     u_int8_t	res2[3];
192 } __attribute__ ((packed));
193 
194 struct ciss_report_cdb
195 {
196     u_int8_t	opcode;
197     u_int8_t	reserved[5];
198     u_int32_t	length;			/* big-endian */
199     u_int8_t	:8;
200     u_int8_t	control;
201 } __packed;
202 
203 /*
204  * Note that it's not clear whether we have to set the detail field to
205  * the tag of the command to be aborted, or the tag field in the command itself;
206  * documentation conflicts on this.
207  */
208 #define CISS_OPCODE_MESSAGE_ABORT		0x00
209 #define CISS_MESSAGE_ABORT_TASK			0x00
210 #define CISS_MESSAGE_ABORT_TASK_SET		0x01
211 #define CISS_MESSAGE_ABORT_CLEAR_ACA		0x02
212 #define CISS_MESSAGE_ABORT_CLEAR_TASK_SET	0x03
213 
214 #define CISS_OPCODE_MESSAGE_RESET		0x01
215 #define CISS_MESSAGE_RESET_CONTROLLER		0x00
216 #define CISS_MESSAGE_RESET_BUS			0x01
217 #define CISS_MESSAGE_RESET_TARGET		0x03
218 #define CISS_MESSAGE_RESET_LOGICAL_UNIT		0x04
219 
220 #define CISS_OPCODE_MESSAGE_SCAN		0x02
221 #define CISS_MESSAGE_SCAN_CONTROLLER		0x00
222 #define CISS_MESSAGE_SCAN_BUS			0x01
223 #define CISS_MESSAGE_SCAN_TARGET		0x03
224 #define CISS_MESSAGE_SCAN_LOGICAL_UNIT		0x04
225 
226 #define CISS_OPCODE_MESSAGE_NOP			0x03
227 
228 struct ciss_message_cdb
229 {
230     u_int8_t	opcode;
231     u_int8_t	type;
232     u_int16_t	:16;
233     u_int32_t	abort_tag;					/* XXX endianness? */
234     u_int8_t	reserved[8];
235 } __packed;
236 
237 /*
238  * CISS vendor-specific commands/messages.
239  *
240  * Note that while messages and vendor-specific commands are
241  * differentiated, they are handled in basically the same way and can
242  * be considered to be basically the same thing, as long as the cdb
243  * type field is set correctly.
244  */
245 #define CISS_OPCODE_READ		0xc0
246 #define CISS_OPCODE_WRITE		0xc1
247 #define CISS_COMMAND_NOTIFY_ON_EVENT	0xd0
248 #define CISS_COMMAND_ABORT_NOTIFY	0xd1
249 
250 struct ciss_notify_cdb
251 {
252     u_int8_t	opcode;
253     u_int8_t	command;
254     u_int8_t	res1[2];
255     u_int16_t	timeout;		/* seconds, little-endian */
256     u_int8_t	res2;			/* reserved */
257     u_int8_t	synchronous:1;		/* return immediately */
258     u_int8_t	ordered:1;		/* return events in recorded order */
259     u_int8_t	seek_to_oldest:1;	/* reset read counter to oldest event */
260     u_int8_t	new_only:1;		/* ignore any queued events */
261     u_int8_t	:4;
262     u_int32_t	length;			/* must be 512, little-endian */
263 #define CISS_NOTIFY_DATA_SIZE	512
264     u_int8_t	control;
265 } __packed;
266 
267 #define CISS_NOTIFY_NOTIFIER		0
268 #define CISS_NOTIFY_NOTIFIER_STATUS		0
269 #define CISS_NOTIFY_NOTIFIER_PROTOCOL		1
270 
271 #define CISS_NOTIFY_HOTPLUG		1
272 #define CISS_NOTIFY_HOTPLUG_PHYSICAL		0
273 #define CISS_NOTIFY_HOTPLUG_POWERSUPPLY		1
274 #define CISS_NOTIFY_HOTPLUG_FAN			2
275 #define CISS_NOTIFY_HOTPLUG_POWER		3
276 #define CISS_NOTIFY_HOTPLUG_REDUNDANT		4
277 #define CISS_NOTIFY_HOTPLUG_NONDISK		5
278 
279 #define CISS_NOTIFY_HARDWARE		2
280 #define CISS_NOTIFY_HARDWARE_CABLES		0
281 #define CISS_NOTIFY_HARDWARE_MEMORY		1
282 #define CISS_NOTIFY_HARDWARE_FAN		2
283 #define CISS_NOTIFY_HARDWARE_VRM		3
284 
285 #define CISS_NOTIFY_ENVIRONMENT		3
286 #define CISS_NOTIFY_ENVIRONMENT_TEMPERATURE	0
287 #define CISS_NOTIFY_ENVIRONMENT_POWERSUPPLY	1
288 #define CISS_NOTIFY_ENVIRONMENT_CHASSIS		2
289 #define CISS_NOTIFY_ENVIRONMENT_POWER		3
290 
291 #define CISS_NOTIFY_PHYSICAL		4
292 #define CISS_NOTIFY_PHYSICAL_STATE		0
293 
294 #define CISS_NOTIFY_LOGICAL		5
295 #define CISS_NOTIFY_LOGICAL_STATUS		0
296 #define CISS_NOTIFY_LOGICAL_ERROR		1
297 #define CISS_NOTIFY_LOGICAL_SURFACE		2
298 
299 #define CISS_NOTIFY_REDUNDANT		6
300 #define CISS_NOTIFY_REDUNDANT_STATUS		0
301 
302 #define CISS_NOTIFY_CISS		8
303 #define CISS_NOTIFY_CISS_REDUNDANT_CHANGE	0
304 #define CISS_NOTIFY_CISS_PATH_STATUS		1
305 #define CISS_NOTIFY_CISS_HARDWARE_ERROR		2
306 #define CISS_NOTIFY_CISS_LOGICAL		3
307 
308 struct ciss_notify_drive
309 {
310     u_int16_t	physical_drive_number;
311     u_int8_t	configured_drive_flag;
312     u_int8_t	spare_drive_flag;
313     u_int8_t	big_physical_drive_number;
314     u_int8_t	enclosure_bay_number;
315 } __packed;
316 
317 struct ciss_notify_locator
318 {
319     u_int16_t	port;
320     u_int16_t	id;
321     u_int16_t	box;
322 } __packed;
323 
324 struct ciss_notify_redundant_controller
325 {
326     u_int16_t	slot;
327 } __packed;
328 
329 struct ciss_notify_logical_status
330 {
331     u_int16_t	logical_drive;
332     u_int8_t	previous_state;
333     u_int8_t	new_state;
334     u_int8_t	spare_state;
335 } __packed;
336 
337 struct ciss_notify_rebuild_aborted
338 {
339     u_int16_t	logical_drive;
340     u_int8_t	replacement_drive;
341     u_int8_t	error_drive;
342     u_int8_t	big_replacement_drive;
343     u_int8_t	big_error_drive;
344 } __packed;
345 
346 struct ciss_notify_io_error
347 {
348     u_int16_t	logical_drive;
349     u_int32_t	lba;
350     u_int16_t	block_count;
351     u_int8_t	command;
352     u_int8_t	failure_bus;
353     u_int8_t	failure_drive;
354     u_int64_t	big_lba;
355 } __packed;
356 
357 struct ciss_notify_consistency_completed
358 {
359     u_int16_t	logical_drive;
360 } __packed;
361 
362 struct ciss_notify
363 {
364     u_int32_t	timestamp;		/* seconds since controller power-on */
365     u_int16_t	class;
366     u_int16_t	subclass;
367     u_int16_t	detail;
368     union
369     {
370 	struct ciss_notify_drive		drive;
371 	struct ciss_notify_locator		location;
372 	struct ciss_notify_redundant_controller	redundant_controller;
373 	struct ciss_notify_logical_status	logical_status;
374 	struct ciss_notify_rebuild_aborted	rebuild_aborted;
375 	struct ciss_notify_io_error		io_error;
376 	struct ciss_notify_consistency_completed consistency_completed;
377 	u_int8_t	data[64];
378     } data;
379     char	message[80];
380     u_int32_t	tag;
381     u_int16_t	date;
382     u_int16_t	year;
383     u_int32_t	time;
384     u_int16_t	pre_power_up_time;
385     union ciss_device_address	device;
386     /* XXX pads to 512 bytes */
387 } __packed;
388 
389 /*
390  * CISS config table, which describes the controller's
391  * supported interface(s) and capabilities.
392  *
393  * This is mapped directly via PCI.
394  */
395 struct ciss_config_table
396 {
397     char	signature[4];		/* "CISS" */
398     u_int32_t	valence;
399     u_int32_t	supported_methods;
400 #define CISS_TRANSPORT_METHOD_READY	(1<<0)
401 #define CISS_TRANSPORT_METHOD_SIMPLE	(1<<1)
402 #define CISS_TRANSPORT_METHOD_PERF	(1<<2)
403     u_int32_t	active_method;
404     u_int32_t	requested_method;
405     u_int32_t	command_physlimit;
406     u_int32_t	interrupt_coalesce_delay;
407     u_int32_t	interrupt_coalesce_count;
408     u_int32_t	max_outstanding_commands;
409     u_int32_t	bus_types;
410 #define CISS_TRANSPORT_BUS_TYPE_ULTRA2	(1<<0)
411 #define CISS_TRANSPORT_BUS_TYPE_ULTRA3	(1<<1)
412 #define CISS_TRANSPORT_BUS_TYPE_FIBRE1	(1<<8)
413 #define CISS_TRANSPORT_BUS_TYPE_FIBRE2	(1<<9)
414     u_int32_t	transport_offset;
415     char	server_name[16];
416     u_int32_t	heartbeat;
417     u_int32_t	host_driver;
418 #define CISS_DRIVER_SUPPORT_UNIT_ATTENTION	(1<<0)
419 #define CISS_DRIVER_QUICK_INIT			(1<<1)
420 #define CISS_DRIVER_INTERRUPT_ON_LOCKUP		(1<<2)
421 #define CISS_DRIVER_SUPPORT_MIXED_Q_TAGS	(1<<3)
422 #define CISS_DRIVER_HOST_IS_ALPHA		(1<<4)
423 #define CISS_DRIVER_MULTI_LUN_SUPPORT		(1<<5)
424 #define CISS_DRIVER_MESSAGE_REQUESTS_SUPPORTED	(1<<7)
425 #define CISS_DRIVER_DAUGHTER_ATTACHED		(1<<8)
426 #define CISS_DRIVER_SCSI_PREFETCH		(1<<9)
427     u_int32_t	max_sg_length;		/* 31 in older firmware */
428 /*
429  * these fields appear in OpenCISS Spec 1.06
430  * http://cciss.sourceforge.net/#docs
431  */
432     u_int32_t	max_logical_supported;
433     u_int32_t	max_physical_supported;
434     u_int32_t	max_physical_per_logical;
435     u_int32_t	max_perfomant_mode_cmds;
436     u_int32_t	max_block_fetch_count;
437 } __packed;
438 
439 /*
440  * Configuration table for the Performant transport.  Only 4 request queues
441  * are mentioned in this table, though apparently up to 256 can exist.
442  */
443 struct ciss_perf_config {
444     uint32_t	fetch_count[8];
445 #define CISS_SG_FETCH_MAX	0
446 #define CISS_SG_FETCH_1		1
447 #define CISS_SG_FETCH_2		2
448 #define CISS_SG_FETCH_4		3
449 #define CISS_SG_FETCH_8		4
450 #define CISS_SG_FETCH_16	5
451 #define CISS_SG_FETCH_32	6
452 #define CISS_SG_FETCH_NONE	7
453     uint32_t	rq_size;
454     uint32_t	rq_count;
455     uint32_t	rq_bank_lo;
456     uint32_t	rq_bank_hi;
457     struct {
458 	uint32_t	rq_addr_lo;
459 	uint32_t	rq_addr_hi;
460     } __packed rq[4];
461 } __packed;
462 
463 /*
464  * In a flagrant violation of what CISS seems to be meant to be about,
465  * Compaq recycle a goodly portion of their previous generation's
466  * command set (and all the legacy baggage related to a design
467  * originally aimed at narrow SCSI) through the Array Controller Read
468  * and Array Controller Write interface.
469  *
470  * Command ID values here can be looked up for in the
471  * publically-available documentation for the older controllers; note
472  * that the command layout is necessarily different to fit within the
473  * CDB.
474  */
475 #define CISS_ARRAY_CONTROLLER_READ	0x26
476 #define CISS_ARRAY_CONTROLLER_WRITE	0x27
477 
478 #define CISS_BMIC_ID_LDRIVE		0x10
479 #define CISS_BMIC_ID_CTLR		0x11
480 #define CISS_BMIC_ID_LSTATUS		0x12
481 #define CISS_BMIC_ID_PDRIVE		0x15
482 #define CISS_BMIC_BLINK_PDRIVE		0x16
483 #define CISS_BMIC_SENSE_BLINK_PDRIVE	0x17
484 #define CISS_BMIC_SOFT_RESET		0x40
485 #define CISS_BMIC_FLUSH_CACHE		0xc2
486 #define CISS_BMIC_ACCEPT_MEDIA		0xe0
487 
488 /*
489  * When numbering drives, the original design assumed that
490  * drives 0-7 are on the first SCSI bus, 8-15 on the second,
491  * and so forth.  In order to handle modern SCSI configurations,
492  * the MSB is set in the drive ID field, in which case the
493  * modulus changes from 8 to the number of supported drives
494  * per SCSI bus (as obtained from the ID_CTLR command).
495  * This feature is referred to as BIG_MAP support, and we assume
496  * that all CISS controllers support it.
497  */
498 
499 #define CISS_BIG_MAP_ID(sc, bus, target)		\
500 	(0x80 | 					\
501 	 ((sc)->ciss_id->drives_per_scsi_bus * (bus)) |	\
502 	 (target))
503 
504 #define CISS_BIG_MAP_BUS(sc, id)			\
505 	(((id) & 0x80) ? (((id) & ~0x80) / (sc)->ciss_id->drives_per_scsi_bus) : -1)
506 
507 #define CISS_BIG_MAP_TARGET(sc, id)			\
508 	(((id) & 0x80) ? (((id) & ~0x80) % (sc)->ciss_id->drives_per_scsi_bus) : -1)
509 
510 #define CISS_BIG_MAP_ENTRIES	128	/* number of entries in a BIG_MAP */
511 
512 /*
513  * In the device address of a logical volume, the bus number
514  * is encoded into the logical lun volume number starting
515  * at the second byte, with the first byte defining the
516  * logical drive number.
517  */
518 #define CISS_LUN_TO_BUS(x)    (((x) >> 16) & 0xFF)
519 #define CISS_LUN_TO_TARGET(x) ((x) & 0xFF)
520 
521 /*
522  * BMIC CDB
523  *
524  * Note that the phys_drive/res1 field is nominally the 32-bit
525  * "block number" field, but the only BMIC command(s) of interest
526  * implemented overload the MSB (note big-endian format here)
527  * to be the physical drive ID, so we define accordingly.
528  */
529 struct ciss_bmic_cdb {
530     u_int8_t	opcode;
531     u_int8_t	log_drive;
532     u_int8_t	phys_drive;
533     u_int8_t	res1[3];
534     u_int8_t	bmic_opcode;
535     u_int16_t	size;			/* big-endian */
536     u_int8_t	res2;
537 } __packed;
538 
539 /*
540  * BMIC command command/return structures.
541  */
542 
543 /* CISS_BMIC_ID_LDRIVE */
544 struct ciss_bmic_id_ldrive {
545     u_int16_t	block_size;
546     u_int32_t	blocks_available;
547     u_int8_t	drive_parameter_table[16];	/* XXX define */
548     u_int8_t	fault_tolerance;
549 #define CISS_LDRIVE_RAID0	0
550 #define CISS_LDRIVE_RAID4	1
551 #define CISS_LDRIVE_RAID1	2
552 #define CISS_LDRIVE_RAID5	3
553 #define CISS_LDRIVE_RAID51	4
554 #define CISS_LDRIVE_RAIDADG	5
555     u_int8_t	res1;
556     u_int8_t	bios_disable_flag;
557     u_int8_t	res2;
558     u_int32_t	logical_drive_identifier;
559     char	logical_drive_label[64];
560     u_int64_t	big_blocks_available;
561     u_int8_t	res3[410];
562 } __packed;
563 
564 /* CISS_BMIC_ID_LSTATUS */
565 struct ciss_bmic_id_lstatus {
566     u_int8_t	status;
567 #define CISS_LSTATUS_OK				0
568 #define CISS_LSTATUS_FAILED			1
569 #define CISS_LSTATUS_NOT_CONFIGURED		2
570 #define CISS_LSTATUS_INTERIM_RECOVERY		3
571 #define CISS_LSTATUS_READY_RECOVERY		4
572 #define CISS_LSTATUS_RECOVERING			5
573 #define CISS_LSTATUS_WRONG_PDRIVE		6
574 #define CISS_LSTATUS_MISSING_PDRIVE		7
575 #define CISS_LSTATUS_EXPANDING			10
576 #define CISS_LSTATUS_BECOMING_READY		11
577 #define CISS_LSTATUS_QUEUED_FOR_EXPANSION	12
578     u_int32_t	deprecated_drive_failure_map;
579     u_int8_t	res1[416];
580     u_int32_t	blocks_to_recover;
581     u_int8_t	deprecated_drive_rebuilding;
582     u_int16_t	deprecated_remap_count[32];
583     u_int32_t	deprecated_replacement_map;
584     u_int32_t	deprecated_active_spare_map;
585     u_int8_t	spare_configured:1;
586     u_int8_t	spare_rebuilding:1;
587     u_int8_t	spare_rebuilt:1;
588     u_int8_t	spare_failed:1;
589     u_int8_t	spare_switched:1;
590     u_int8_t	spare_available:1;
591     u_int8_t	res2:2;
592     u_int8_t	deprecated_spare_to_replace_map[32];
593     u_int32_t	deprecated_replaced_marked_ok_map;
594     u_int8_t	media_exchanged;
595     u_int8_t	cache_failure;
596     u_int8_t	expand_failure;
597     u_int8_t	rebuild_read_failure:1;
598     u_int8_t	rebuild_write_failure:1;
599     u_int8_t	res3:6;
600     u_int8_t	drive_failure_map[CISS_BIG_MAP_ENTRIES / 8];
601     u_int16_t	remap_count[CISS_BIG_MAP_ENTRIES];
602     u_int8_t	replacement_map[CISS_BIG_MAP_ENTRIES / 8];
603     u_int8_t	active_spare_map[CISS_BIG_MAP_ENTRIES / 8];
604     u_int8_t	spare_to_replace_map[CISS_BIG_MAP_ENTRIES];
605     u_int8_t	replaced_marked_ok_map[CISS_BIG_MAP_ENTRIES / 8];
606     u_int8_t	drive_rebuilding;
607     u_int64_t	big_blocks_to_recover;
608     u_int8_t	res4[28];
609 } __packed;
610 
611 /* CISS_BMIC_ID_CTLR */
612 struct ciss_bmic_id_table {
613     u_int8_t	configured_logical_drives;
614     u_int32_t	config_signature;
615     char	running_firmware_revision[4];
616     char	stored_firmware_revision[4];
617     u_int8_t	hardware_revision;
618     u_int8_t	boot_block_revision[4];
619     u_int32_t	deprecated_drive_present_map;
620     u_int32_t	deprecated_external_drive_present_map;
621     u_int32_t	board_id;
622     u_int8_t	swapped_error_cable;
623     u_int32_t	deprecated_non_disk_map;
624     u_int8_t	bad_host_ram_addr;
625     u_int8_t	cpu_revision;
626     u_int8_t	res3[3];
627     char	marketting_revision;
628     u_int8_t	controller_flags;
629 #define	CONTROLLER_FLAGS_FLASH_ROM_INSTALLED	0x01
630 #define	CONTROLLER_FLAGS_DIAGS_MODE_BIT		0x02
631 #define	CONTROLLER_FLAGS_EXPAND_32MB_FX 	0x04
632 #define	CONTROLLER_FLAGS_MORE_THAN_7_SUPPORT 	0x08
633 #define	CONTROLLER_FLAGS_DAISY_SUPPORT_BIT 	0x10
634 #define	CONTROLLER_FLAGS_RES6 			0x20
635 #define	CONTROLLER_FLAGS_RES7 			0x40
636 #define	CONTROLLER_FLAGS_BIG_MAP_SUPPORT 	0x80
637     u_int8_t	host_flags;
638 #define HOST_FLAGS_SDB_ASIC_WORK_AROUND 	0x01
639 #define HOST_FLAGS_PCI_DATA_BUS_PARITY_SUPPORT	0x02
640 #define HOST_FLAGS_RES3				0x04
641 #define HOST_FLAGS_RES4				0x08
642 #define HOST_FLAGS_RES5				0x10
643 #define HOST_FLAGS_RES6				0x20
644 #define HOST_FLAGS_RES7				0x30
645 #define HOST_FLAGS_RES8				0x40
646     u_int8_t	expand_disable_code;
647 #define EXPAND_DISABLE_NOT_NEEDED		0x01
648 #define EXPAND_DISABLE_MISSING_CACHE_BOARD	0x02
649 #define EXPAND_DISABLE_WCXC_FATAL_CACHE_BITS	0x04
650 #define EXPAND_DISABLE_CACHE_PERM_DISABLED	0x08
651 #define EXPAND_DISABLE_RAM_ALLOCATION_FAILED	0x10
652 #define EXPAND_DISABLE_BATTEREIS_DISCHARGED	0x20
653 #define EXPAND_DISABLE_RES7			0x40
654 #define EXPAND_DISABLE_REBUILD_RUNNING		0x80
655     u_int8_t	scsi_chip_count;
656     u_int32_t	maximum_blocks;
657     u_int32_t	controller_clock;
658     u_int8_t	drives_per_scsi_bus;
659     u_int8_t	big_drive_present_map[CISS_BIG_MAP_ENTRIES / 8];
660     u_int8_t	big_external_drive_present_map[CISS_BIG_MAP_ENTRIES / 8];
661     u_int8_t	big_non_disk_map[CISS_BIG_MAP_ENTRIES / 8];
662 
663     u_int16_t	task_flags;		/* used for FW debugging */
664     u_int8_t	ICL_bus_map;		/* Bitmap used for ICL between controllers */
665     u_int8_t	redund_ctlr_modes_support;	/* See REDUNDANT MODE VALUES */
666     u_int8_t	curr_redund_ctlr_mode;
667     u_int8_t	redund_ctlr_status;
668     u_int8_t	redund_op_failure_code;
669 
670     u_int8_t	unsupported_nile_bus;
671     u_int8_t	host_i2c_autorev;
672     u_int8_t	cpld_revision;
673     u_int8_t	fibre_chip_count;
674     u_int8_t	daughterboard_type;
675     u_int8_t	more_swapped_config_cable_error;
676 
677     u_int8_t	license_key_status;
678     u_int8_t	access_module_status;
679     u_int8_t	features_supported[12];
680     u_int8_t	rec_rom_inact_rev[4];    /* Recovery ROM inactive f/w revision  */
681     u_int8_t	rec_rom_act_status;      /* Recovery ROM flags                  */
682     u_int8_t	pci_to_pci_status;       /* PCI to PCI bridge status            */
683     u_int32_t	redundant_server_info;   /* Reserved for future use             */
684     u_int8_t	percent_write_cache;     /* Percent of memory allocated to write cache */
685     u_int16_t	daughterboard_size_mb;   /* Total size (MB) of cache board      */
686     u_int8_t	cache_batter_count;      /* Number of cache batteries           */
687     u_int16_t	total_controller_mem_mb; /* Total size (MB) of attached memory  */
688     u_int8_t	more_controller_flags;   /* Additional controller flags byte    */
689     u_int8_t	x_board_host_i2c_rev;    /* 2nd byte of 3 byte autorev field    */
690     u_int8_t	battery_pic_rev;         /* BBWC PIC revision                   */
691 /*
692  * Below here I have no documentation on the rest of this data structure.  It is
693  * inferred from the opensource cciss_vol_status application.  I assume that this
694  * data structure is 512 bytes in total size, do not exceed it.
695  */
696     u_int8_t	bDdffVersion[4];         /* DDFF update engine version          */
697     u_int16_t	usMaxLogicalUnits;       /* Maximum logical units supported */
698     u_int16_t	usExtLogicalUnitCount;   /* Big num configured logical units */
699     u_int16_t	usMaxPhysicalDevices;    /* Maximum physical devices supported */
700     u_int16_t	usMaxPhyDrvPerLogicalUnit; /* Max physical drive per logical unit */
701     u_int8_t	bEnclosureCount;         /* Number of attached enclosures */
702     u_int8_t	bExpanderCount;          /* Number of expanders detected */
703     u_int16_t	usOffsetToEDPbitmap;     /* Offset to extended drive present map*/
704     u_int16_t	usOffsetToEEDPbitmap;    /* Offset to extended external drive present map */
705     u_int16_t	usOffsetToENDbitmap;     /* Offset to extended non-disk map */
706     u_int8_t	bInternalPortStatus[8];  /* Internal port status bytes */
707     u_int8_t	bExternalPortStatus[8];  /* External port status bytes */
708     u_int32_t	uiYetMoreControllerFlags;/* Yet More Controller flags  */
709 #define YMORE_CONTROLLER_FLAGS_JBOD_SUPPORTED \
710 	( 1 << 25 )			 /* Controller has JBOD support */
711 
712     u_int8_t	bLastLockup;              /* Last lockup code */
713     u_int8_t	bSlot;                    /* PCI slot according to option ROM*/
714     u_int16_t	usBuildNum;               /* Build number */
715     u_int32_t	uiMaxSafeFullStripeSize;  /* Maximum safe full stripe size */
716     u_int32_t	uiTotalLength;            /* Total structure length */
717     u_int8_t	bVendorID[8];             /* Vendor ID */
718     u_int8_t	bProductID[16];           /* Product ID */
719 /*
720  * These are even more obscure as they seem to only be available in cciss_vol_status
721  */
722     u_int32_t	ExtendedLastLockupCode;
723     u_int16_t	MaxRaid;
724     u_int16_t	MaxParity;
725     u_int16_t	MaxADGStripSize;
726     u_int16_t	YetMoreSwappedCables;
727     u_int8_t	MaxDevicePaths;
728     u_int8_t	PowerUPNvramFlags;
729 #define PWR_UP_FLAG_JBOD_ENABLED	0x08	/*JBOD mode is enabled, all RAID features off */
730 
731     u_int16_t	ZonedOffset;
732     u_int32_t   FixedFieldsLength;
733     u_int8_t	FWCompileTimeStamp[24];
734     u_int32_t	EvenMoreControllerFlags;
735     u_int8_t	padding[240];
736 } __packed;
737 
738 /* CISS_BMIC_ID_PDRIVE */
739 struct ciss_bmic_id_pdrive {
740     u_int8_t	scsi_bus;
741     u_int8_t	scsi_id;
742     u_int16_t	block_size;
743     u_int32_t	total_blocks;
744     u_int32_t	reserved_blocks;
745     char	model[40];
746     char	serial[40];
747     char	revision[8];
748     u_int8_t	inquiry_bits;
749     u_int8_t	res1[2];
750     u_int8_t	drive_present:1;
751     u_int8_t	non_disk:1;
752     u_int8_t	wide:1;
753     u_int8_t	synchronous:1;
754     u_int8_t	narrow:1;
755     u_int8_t	wide_downgraded_to_narrow:1;
756     u_int8_t	ultra:1;
757     u_int8_t	ultra2:1;
758     u_int8_t	SMART:1;
759     u_int8_t	SMART_errors_recorded:1;
760     u_int8_t	SMART_errors_enabled:1;
761     u_int8_t	SMART_errors_detected:1;
762     u_int8_t	external:1;
763     u_int8_t	configured:1;
764     u_int8_t	configured_spare:1;
765     u_int8_t	cache_saved_enabled:1;
766     u_int8_t	res2;
767     u_int8_t	res3:6;
768     u_int8_t	cache_currently_enabled:1;
769     u_int8_t	cache_safe:1;
770     u_int8_t	res4[5];
771     char	connector[2];
772     u_int8_t	res5;
773     u_int8_t	bay;
774     u_int16_t	rpm;
775     u_int8_t	drive_type;
776     u_int8_t	res6[393];
777 } __packed;
778 
779 /* CISS_BMIC_BLINK_PDRIVE */
780 /* CISS_BMIC_SENSE_BLINK_PDRIVE */
781 struct ciss_bmic_blink_pdrive {
782     u_int32_t	blink_duration;		/* 10ths of a second */
783     u_int32_t	duration_elapsed;	/* only for sense command  */
784     u_int8_t	blinktab[256];
785 #define CISS_BMIC_BLINK_ALL	1
786 #define CISS_BMIC_BLINK_TIMED	2
787     u_int8_t	res2[248];
788 } __packed;
789 
790 /* CISS_BMIC_FLUSH_CACHE */
791 struct ciss_bmic_flush_cache {
792     u_int16_t	flag;
793 #define CISS_BMIC_FLUSH_AND_ENABLE	0
794 #define CISS_BMIC_FLUSH_AND_DISABLE	1
795     u_int8_t	res1[510];
796 } __packed;
797 
798 #ifdef _KERNEL
799 /*
800  * CISS "simple" transport layer.
801  *
802  * Note that there are two slightly different versions of this interface
803  * with different interrupt mask bits.  There's nothing like consistency...
804  */
805 #define CISS_TL_SIMPLE_BAR_REGS	0x10	/* BAR pointing to register space */
806 #define CISS_TL_SIMPLE_BAR_CFG	0x14	/* BAR pointing to space containing config table */
807 
808 #define CISS_TL_SIMPLE_IDBR	0x20	/* inbound doorbell register */
809 #define CISS_TL_SIMPLE_IDBR_CFG_TABLE	(1<<0)	/* notify controller of config table update */
810 
811 #define CISS_TL_SIMPLE_ISR	0x30	/* interrupt status register */
812 #define CISS_TL_SIMPLE_IMR	0x34	/* interrupt mask register */
813 #define CISS_TL_SIMPLE_INTR_OPQ_SA5	(1<<3)	/* OPQ not empty interrupt, SA5 boards */
814 #define CISS_TL_SIMPLE_INTR_OPQ_SA5B	(1<<2)	/* OPQ not empty interrupt, SA5B boards */
815 
816 #define CISS_TL_SIMPLE_IPQ	0x40	/* inbound post queue */
817 #define CISS_TL_SIMPLE_OPQ	0x44	/* outbound post queue */
818 #define CISS_TL_SIMPLE_OPQ_EMPTY	(~(u_int32_t)0)
819 
820 #define CISS_TL_SIMPLE_OSR	0x9c	/* outbound status register */
821 #define CISS_TL_SIMPLE_ODC	0xa0	/* outbound doorbell clear register */
822 #define CISS_TL_SIMPLE_ODC_CLEAR	(0x1)
823 
824 #define CISS_TL_SIMPLE_CFG_BAR	0xb4	/* should be 0x14 */
825 #define CISS_TL_SIMPLE_CFG_OFF	0xb8	/* offset in BAR at which config table is located */
826 
827 /*
828  * Register access primitives.
829  */
830 #define CISS_TL_SIMPLE_READ(sc, ofs) \
831 	bus_space_read_4(sc->ciss_regs_btag, sc->ciss_regs_bhandle, ofs)
832 #define CISS_TL_SIMPLE_WRITE(sc, ofs, val) \
833 	bus_space_write_4(sc->ciss_regs_btag, sc->ciss_regs_bhandle, ofs, val)
834 
835 #define CISS_TL_SIMPLE_POST_CMD(sc, phys)	CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IPQ, phys)
836 #define CISS_TL_SIMPLE_FETCH_CMD(sc)		CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_OPQ)
837 
838 #define CISS_TL_PERF_INTR_OPQ	(CISS_TL_SIMPLE_INTR_OPQ_SA5 | CISS_TL_SIMPLE_INTR_OPQ_SA5B)
839 #define CISS_TL_PERF_INTR_MSI	0x01
840 
841 #define CISS_TL_PERF_POST_CMD(sc, cr)		CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IPQ, cr->cr_ccphys | (cr)->cr_sg_tag)
842 #define CISS_TL_PERF_FLUSH_INT(sc)		CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_OSR)
843 #define CISS_TL_PERF_CLEAR_INT(sc)		CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_ODC, CISS_TL_SIMPLE_ODC_CLEAR)
844 #define CISS_CYCLE_MASK		0x00000001
845 
846 /* Only need one MSI/MSI-X vector */
847 #define CISS_MSI_COUNT	1
848 
849 #define CISS_TL_SIMPLE_DISABLE_INTERRUPTS(sc) \
850 	CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IMR, \
851 			     CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IMR) | (sc)->ciss_interrupt_mask)
852 #define CISS_TL_SIMPLE_ENABLE_INTERRUPTS(sc) \
853 	CISS_TL_SIMPLE_WRITE(sc, CISS_TL_SIMPLE_IMR, \
854 			     CISS_TL_SIMPLE_READ(sc, CISS_TL_SIMPLE_IMR) & ~(sc)->ciss_interrupt_mask)
855 
856 #endif /* _KERNEL */
857