1 /*
2 * u14-34f.c - Low-level driver for UltraStor 14F/34F SCSI host adapters.
3 *
4 * 03 Jun 2003 Rev. 8.10 for linux-2.5.70
5 * + Update for new IRQ API.
6 * + Use "goto" when appropriate.
7 * + Drop u14-34f.h.
8 * + Update for new module_param API.
9 * + Module parameters can now be specified only in the
10 * same format as the kernel boot options.
11 *
12 * boot option old module param
13 * ----------- ------------------
14 * addr,... io_port=addr,...
15 * lc:[y|n] linked_comm=[1|0]
16 * mq:xx max_queue_depth=xx
17 * tm:[0|1|2] tag_mode=[0|1|2]
18 * et:[y|n] ext_tran=[1|0]
19 * of:[y|n] have_old_firmware=[1|0]
20 *
21 * A valid example using the new parameter format is:
22 * modprobe u14-34f "u14-34f=0x340,0x330,lc:y,tm:0,mq:4"
23 *
24 * which is equivalent to the old format:
25 * modprobe u14-34f io_port=0x340,0x330 linked_comm=1 tag_mode=0 \
26 * max_queue_depth=4
27 *
28 * With actual module code, u14-34f and u14_34f are equivalent
29 * as module parameter names.
30 *
31 * 12 Feb 2003 Rev. 8.04 for linux 2.5.60
32 * + Release irq before calling scsi_register.
33 *
34 * 12 Nov 2002 Rev. 8.02 for linux 2.5.47
35 * + Release driver_lock before calling scsi_register.
36 *
37 * 11 Nov 2002 Rev. 8.01 for linux 2.5.47
38 * + Fixed bios_param and scsicam_bios_param calling parameters.
39 *
40 * 28 Oct 2002 Rev. 8.00 for linux 2.5.44-ac4
41 * + Use new tcq and adjust_queue_depth api.
42 * + New command line option (tm:[0-2]) to choose the type of tags:
43 * 0 -> disable tagging ; 1 -> simple tags ; 2 -> ordered tags.
44 * Default is tm:0 (tagged commands disabled).
45 * For compatibility the "tc:" option is an alias of the "tm:"
46 * option; tc:n is equivalent to tm:0 and tc:y is equivalent to
47 * tm:1.
48 *
49 * 10 Oct 2002 Rev. 7.70 for linux 2.5.42
50 * + Foreport from revision 6.70.
51 *
52 * 25 Jun 2002 Rev. 6.70 for linux 2.4.19
53 * + Fixed endian-ness problem due to bitfields.
54 *
55 * 21 Feb 2002 Rev. 6.52 for linux 2.4.18
56 * + Backport from rev. 7.22 (use io_request_lock).
57 *
58 * 20 Feb 2002 Rev. 7.22 for linux 2.5.5
59 * + Remove any reference to virt_to_bus().
60 * + Fix pio hang while detecting multiple HBAs.
61 *
62 * 01 Jan 2002 Rev. 7.20 for linux 2.5.1
63 * + Use the dynamic DMA mapping API.
64 *
65 * 19 Dec 2001 Rev. 7.02 for linux 2.5.1
66 * + Use SCpnt->sc_data_direction if set.
67 * + Use sglist.page instead of sglist.address.
68 *
69 * 11 Dec 2001 Rev. 7.00 for linux 2.5.1
70 * + Use host->host_lock instead of io_request_lock.
71 *
72 * 1 May 2001 Rev. 6.05 for linux 2.4.4
73 * + Fix data transfer direction for opcode SEND_CUE_SHEET (0x5d)
74 *
75 * 25 Jan 2001 Rev. 6.03 for linux 2.4.0
76 * + "check_region" call replaced by "request_region".
77 *
78 * 22 Nov 2000 Rev. 6.02 for linux 2.4.0-test11
79 * + Removed old scsi error handling support.
80 * + The obsolete boot option flag eh:n is silently ignored.
81 * + Removed error messages while a disk drive is powered up at
82 * boot time.
83 * + Improved boot messages: all tagged capable device are
84 * indicated as "tagged".
85 *
86 * 16 Sep 1999 Rev. 5.11 for linux 2.2.12 and 2.3.18
87 * + Updated to the new __setup interface for boot command line options.
88 * + When loaded as a module, accepts the new parameter boot_options
89 * which value is a string with the same format of the kernel boot
90 * command line options. A valid example is:
91 * modprobe u14-34f 'boot_options="0x230,0x340,lc:y,mq:4"'
92 *
93 * 22 Jul 1999 Rev. 5.00 for linux 2.2.10 and 2.3.11
94 * + Removed pre-2.2 source code compatibility.
95 *
96 * 26 Jul 1998 Rev. 4.33 for linux 2.0.35 and 2.1.111
97 * Added command line option (et:[y|n]) to use the existing
98 * translation (returned by scsicam_bios_param) as disk geometry.
99 * The default is et:n, which uses the disk geometry jumpered
100 * on the board.
101 * The default value et:n is compatible with all previous revisions
102 * of this driver.
103 *
104 * 28 May 1998 Rev. 4.32 for linux 2.0.33 and 2.1.104
105 * Increased busy timeout from 10 msec. to 200 msec. while
106 * processing interrupts.
107 *
108 * 18 May 1998 Rev. 4.31 for linux 2.0.33 and 2.1.102
109 * Improved abort handling during the eh recovery process.
110 *
111 * 13 May 1998 Rev. 4.30 for linux 2.0.33 and 2.1.101
112 * The driver is now fully SMP safe, including the
113 * abort and reset routines.
114 * Added command line options (eh:[y|n]) to choose between
115 * new_eh_code and the old scsi code.
116 * If linux version >= 2.1.101 the default is eh:y, while the eh
117 * option is ignored for previous releases and the old scsi code
118 * is used.
119 *
120 * 18 Apr 1998 Rev. 4.20 for linux 2.0.33 and 2.1.97
121 * Reworked interrupt handler.
122 *
123 * 11 Apr 1998 rev. 4.05 for linux 2.0.33 and 2.1.95
124 * Major reliability improvement: when a batch with overlapping
125 * requests is detected, requests are queued one at a time
126 * eliminating any possible board or drive reordering.
127 *
128 * 10 Apr 1998 rev. 4.04 for linux 2.0.33 and 2.1.95
129 * Improved SMP support (if linux version >= 2.1.95).
130 *
131 * 9 Apr 1998 rev. 4.03 for linux 2.0.33 and 2.1.94
132 * Performance improvement: when sequential i/o is detected,
133 * always use direct sort instead of reverse sort.
134 *
135 * 4 Apr 1998 rev. 4.02 for linux 2.0.33 and 2.1.92
136 * io_port is now unsigned long.
137 *
138 * 17 Mar 1998 rev. 4.01 for linux 2.0.33 and 2.1.88
139 * Use new scsi error handling code (if linux version >= 2.1.88).
140 * Use new interrupt code.
141 *
142 * 12 Sep 1997 rev. 3.11 for linux 2.0.30 and 2.1.55
143 * Use of udelay inside the wait loops to avoid timeout
144 * problems with fast cpus.
145 * Removed check about useless calls to the interrupt service
146 * routine (reported on SMP systems only).
147 * At initialization time "sorted/unsorted" is displayed instead
148 * of "linked/unlinked" to reinforce the fact that "linking" is
149 * nothing but "elevator sorting" in the actual implementation.
150 *
151 * 17 May 1997 rev. 3.10 for linux 2.0.30 and 2.1.38
152 * Use of serial_number_at_timeout in abort and reset processing.
153 * Use of the __initfunc and __initdata macro in setup code.
154 * Minor cleanups in the list_statistics code.
155 *
156 * 24 Feb 1997 rev. 3.00 for linux 2.0.29 and 2.1.26
157 * When loading as a module, parameter passing is now supported
158 * both in 2.0 and in 2.1 style.
159 * Fixed data transfer direction for some SCSI opcodes.
160 * Immediate acknowledge to request sense commands.
161 * Linked commands to each disk device are now reordered by elevator
162 * sorting. Rare cases in which reordering of write requests could
163 * cause wrong results are managed.
164 *
165 * 18 Jan 1997 rev. 2.60 for linux 2.1.21 and 2.0.28
166 * Added command line options to enable/disable linked commands
167 * (lc:[y|n]), old firmware support (of:[y|n]) and to set the max
168 * queue depth (mq:xx). Default is "u14-34f=lc:n,of:n,mq:8".
169 * Improved command linking.
170 *
171 * 8 Jan 1997 rev. 2.50 for linux 2.1.20 and 2.0.27
172 * Added linked command support.
173 *
174 * 3 Dec 1996 rev. 2.40 for linux 2.1.14 and 2.0.27
175 * Added queue depth adjustment.
176 *
177 * 22 Nov 1996 rev. 2.30 for linux 2.1.12 and 2.0.26
178 * The list of i/o ports to be probed can be overwritten by the
179 * "u14-34f=port0,port1,...." boot command line option.
180 * Scatter/gather lists are now allocated by a number of kmalloc
181 * calls, in order to avoid the previous size limit of 64Kb.
182 *
183 * 16 Nov 1996 rev. 2.20 for linux 2.1.10 and 2.0.25
184 * Added multichannel support.
185 *
186 * 27 Sep 1996 rev. 2.12 for linux 2.1.0
187 * Portability cleanups (virtual/bus addressing, little/big endian
188 * support).
189 *
190 * 09 Jul 1996 rev. 2.11 for linux 2.0.4
191 * "Data over/under-run" no longer implies a redo on all targets.
192 * Number of internal retries is now limited.
193 *
194 * 16 Apr 1996 rev. 2.10 for linux 1.3.90
195 * New argument "reset_flags" to the reset routine.
196 *
197 * 21 Jul 1995 rev. 2.02 for linux 1.3.11
198 * Fixed Data Transfer Direction for some SCSI commands.
199 *
200 * 13 Jun 1995 rev. 2.01 for linux 1.2.10
201 * HAVE_OLD_UX4F_FIRMWARE should be defined for U34F boards when
202 * the firmware prom is not the latest one (28008-006).
203 *
204 * 11 Mar 1995 rev. 2.00 for linux 1.2.0
205 * Fixed a bug which prevented media change detection for removable
206 * disk drives.
207 *
208 * 23 Feb 1995 rev. 1.18 for linux 1.1.94
209 * Added a check for scsi_register returning NULL.
210 *
211 * 11 Feb 1995 rev. 1.17 for linux 1.1.91
212 * U14F qualified to run with 32 sglists.
213 * Now DEBUG_RESET is disabled by default.
214 *
215 * 9 Feb 1995 rev. 1.16 for linux 1.1.90
216 * Use host->wish_block instead of host->block.
217 *
218 * 8 Feb 1995 rev. 1.15 for linux 1.1.89
219 * Cleared target_time_out counter while performing a reset.
220 *
221 * 28 Jan 1995 rev. 1.14 for linux 1.1.86
222 * Added module support.
223 * Log and do a retry when a disk drive returns a target status
224 * different from zero on a recovered error.
225 * Auto detects if U14F boards have an old firmware revision.
226 * Max number of scatter/gather lists set to 16 for all boards
227 * (most installation run fine using 33 sglists, while other
228 * has problems when using more than 16).
229 *
230 * 16 Jan 1995 rev. 1.13 for linux 1.1.81
231 * Display a message if check_region detects a port address
232 * already in use.
233 *
234 * 15 Dec 1994 rev. 1.12 for linux 1.1.74
235 * The host->block flag is set for all the detected ISA boards.
236 *
237 * 30 Nov 1994 rev. 1.11 for linux 1.1.68
238 * Redo i/o on target status CHECK_CONDITION for TYPE_DISK only.
239 * Added optional support for using a single board at a time.
240 *
241 * 14 Nov 1994 rev. 1.10 for linux 1.1.63
242 *
243 * 28 Oct 1994 rev. 1.09 for linux 1.1.58 Final BETA release.
244 * 16 Jul 1994 rev. 1.00 for linux 1.1.29 Initial ALPHA release.
245 *
246 * This driver is a total replacement of the original UltraStor
247 * scsi driver, but it supports ONLY the 14F and 34F boards.
248 * It can be configured in the same kernel in which the original
249 * ultrastor driver is configured to allow the original U24F
250 * support.
251 *
252 * Multiple U14F and/or U34F host adapters are supported.
253 *
254 * Copyright (C) 1994-2003 Dario Ballabio (ballabio_dario@emc.com)
255 *
256 * Alternate email: dario.ballabio@inwind.it, dario.ballabio@tiscalinet.it
257 *
258 * Redistribution and use in source and binary forms, with or without
259 * modification, are permitted provided that redistributions of source
260 * code retain the above copyright notice and this comment without
261 * modification.
262 *
263 * WARNING: if your 14/34F board has an old firmware revision (see below)
264 * you must change "#undef" into "#define" in the following
265 * statement.
266 */
267 #undef HAVE_OLD_UX4F_FIRMWARE
268 /*
269 * The UltraStor 14F, 24F, and 34F are a family of intelligent, high
270 * performance SCSI-2 host adapters.
271 * Here is the scoop on the various models:
272 *
273 * 14F - ISA first-party DMA HA with floppy support and WD1003 emulation.
274 * 24F - EISA Bus Master HA with floppy support and WD1003 emulation.
275 * 34F - VESA Local-Bus Bus Master HA (no WD1003 emulation).
276 *
277 * This code has been tested with up to two U14F boards, using both
278 * firmware 28004-005/38004-004 (BIOS rev. 2.00) and the latest firmware
279 * 28004-006/38004-005 (BIOS rev. 2.01).
280 *
281 * The latest firmware is required in order to get reliable operations when
282 * clustering is enabled. ENABLE_CLUSTERING provides a performance increase
283 * up to 50% on sequential access.
284 *
285 * Since the struct scsi_host_template structure is shared among all 14F and 34F,
286 * the last setting of use_clustering is in effect for all of these boards.
287 *
288 * Here a sample configuration using two U14F boards:
289 *
290 U14F0: ISA 0x330, BIOS 0xc8000, IRQ 11, DMA 5, SG 32, MB 16, of:n, lc:y, mq:8.
291 U14F1: ISA 0x340, BIOS 0x00000, IRQ 10, DMA 6, SG 32, MB 16, of:n, lc:y, mq:8.
292 *
293 * The boot controller must have its BIOS enabled, while other boards can
294 * have their BIOS disabled, or enabled to an higher address.
295 * Boards are named Ux4F0, Ux4F1..., according to the port address order in
296 * the io_port[] array.
297 *
298 * The following facts are based on real testing results (not on
299 * documentation) on the above U14F board.
300 *
301 * - The U14F board should be jumpered for bus on time less or equal to 7
302 * microseconds, while the default is 11 microseconds. This is order to
303 * get acceptable performance while using floppy drive and hard disk
304 * together. The jumpering for 7 microseconds is: JP13 pin 15-16,
305 * JP14 pin 7-8 and pin 9-10.
306 * The reduction has a little impact on scsi performance.
307 *
308 * - If scsi bus length exceeds 3m., the scsi bus speed needs to be reduced
309 * from 10Mhz to 5Mhz (do this by inserting a jumper on JP13 pin 7-8).
310 *
311 * - If U14F on board firmware is older than 28004-006/38004-005,
312 * the U14F board is unable to provide reliable operations if the scsi
313 * request length exceeds 16Kbyte. When this length is exceeded the
314 * behavior is:
315 * - adapter_status equal 0x96 or 0xa3 or 0x93 or 0x94;
316 * - adapter_status equal 0 and target_status equal 2 on for all targets
317 * in the next operation following the reset.
318 * This sequence takes a long time (>3 seconds), so in the meantime
319 * the SD_TIMEOUT in sd.c could expire giving rise to scsi aborts
320 * (SD_TIMEOUT has been increased from 3 to 6 seconds in 1.1.31).
321 * Because of this I had to DISABLE_CLUSTERING and to work around the
322 * bus reset in the interrupt service routine, returning DID_BUS_BUSY
323 * so that the operations are retried without complains from the scsi.c
324 * code.
325 * Any reset of the scsi bus is going to kill tape operations, since
326 * no retry is allowed for tapes. Bus resets are more likely when the
327 * scsi bus is under heavy load.
328 * Requests using scatter/gather have a maximum length of 16 x 1024 bytes
329 * when DISABLE_CLUSTERING is in effect, but unscattered requests could be
330 * larger than 16Kbyte.
331 *
332 * The new firmware has fixed all the above problems.
333 *
334 * For U34F boards the latest bios prom is 38008-002 (BIOS rev. 2.01),
335 * the latest firmware prom is 28008-006. Older firmware 28008-005 has
336 * problems when using more than 16 scatter/gather lists.
337 *
338 * The list of i/o ports to be probed can be totally replaced by the
339 * boot command line option: "u14-34f=port0,port1,port2,...", where the
340 * port0, port1... arguments are ISA/VESA addresses to be probed.
341 * For example using "u14-34f=0x230,0x340", the driver probes only the two
342 * addresses 0x230 and 0x340 in this order; "u14-34f=0" totally disables
343 * this driver.
344 *
345 * After the optional list of detection probes, other possible command line
346 * options are:
347 *
348 * et:y use disk geometry returned by scsicam_bios_param;
349 * et:n use disk geometry jumpered on the board;
350 * lc:y enables linked commands;
351 * lc:n disables linked commands;
352 * tm:0 disables tagged commands (same as tc:n);
353 * tm:1 use simple queue tags (same as tc:y);
354 * tm:2 use ordered queue tags (same as tc:2);
355 * of:y enables old firmware support;
356 * of:n disables old firmware support;
357 * mq:xx set the max queue depth to the value xx (2 <= xx <= 8).
358 *
359 * The default value is: "u14-34f=lc:n,of:n,mq:8,tm:0,et:n".
360 * An example using the list of detection probes could be:
361 * "u14-34f=0x230,0x340,lc:y,tm:2,of:n,mq:4,et:n".
362 *
363 * When loading as a module, parameters can be specified as well.
364 * The above example would be (use 1 in place of y and 0 in place of n):
365 *
366 * modprobe u14-34f io_port=0x230,0x340 linked_comm=1 have_old_firmware=0 \
367 * max_queue_depth=4 ext_tran=0 tag_mode=2
368 *
369 * ----------------------------------------------------------------------------
370 * In this implementation, linked commands are designed to work with any DISK
371 * or CD-ROM, since this linking has only the intent of clustering (time-wise)
372 * and reordering by elevator sorting commands directed to each device,
373 * without any relation with the actual SCSI protocol between the controller
374 * and the device.
375 * If Q is the queue depth reported at boot time for each device (also named
376 * cmds/lun) and Q > 2, whenever there is already an active command to the
377 * device all other commands to the same device (up to Q-1) are kept waiting
378 * in the elevator sorting queue. When the active command completes, the
379 * commands in this queue are sorted by sector address. The sort is chosen
380 * between increasing or decreasing by minimizing the seek distance between
381 * the sector of the commands just completed and the sector of the first
382 * command in the list to be sorted.
383 * Trivial math assures that the unsorted average seek distance when doing
384 * random seeks over S sectors is S/3.
385 * When (Q-1) requests are uniformly distributed over S sectors, the average
386 * distance between two adjacent requests is S/((Q-1) + 1), so the sorted
387 * average seek distance for (Q-1) random requests over S sectors is S/Q.
388 * The elevator sorting hence divides the seek distance by a factor Q/3.
389 * The above pure geometric remarks are valid in all cases and the
390 * driver effectively reduces the seek distance by the predicted factor
391 * when there are Q concurrent read i/o operations on the device, but this
392 * does not necessarily results in a noticeable performance improvement:
393 * your mileage may vary....
394 *
395 * Note: command reordering inside a batch of queued commands could cause
396 * wrong results only if there is at least one write request and the
397 * intersection (sector-wise) of all requests is not empty.
398 * When the driver detects a batch including overlapping requests
399 * (a really rare event) strict serial (pid) order is enforced.
400 * ----------------------------------------------------------------------------
401 *
402 * The boards are named Ux4F0, Ux4F1,... according to the detection order.
403 *
404 * In order to support multiple ISA boards in a reliable way,
405 * the driver sets host->wish_block = TRUE for all ISA boards.
406 */
407
408 #include <linux/string.h>
409 #include <linux/kernel.h>
410 #include <linux/ioport.h>
411 #include <linux/delay.h>
412 #include <asm/io.h>
413 #include <asm/system.h>
414 #include <asm/byteorder.h>
415 #include <linux/proc_fs.h>
416 #include <linux/blkdev.h>
417 #include <linux/interrupt.h>
418 #include <linux/stat.h>
419 #include <linux/pci.h>
420 #include <linux/init.h>
421 #include <linux/ctype.h>
422 #include <linux/spinlock.h>
423 #include <asm/dma.h>
424 #include <asm/irq.h>
425
426 #include <scsi/scsi.h>
427 #include <scsi/scsi_cmnd.h>
428 #include <scsi/scsi_device.h>
429 #include <scsi/scsi_host.h>
430 #include <scsi/scsi_tcq.h>
431 #include <scsi/scsicam.h>
432
433 static int u14_34f_detect(struct scsi_host_template *);
434 static int u14_34f_release(struct Scsi_Host *);
435 static int u14_34f_queuecommand(struct scsi_cmnd *, void (*done)(struct scsi_cmnd *));
436 static int u14_34f_eh_abort(struct scsi_cmnd *);
437 static int u14_34f_eh_host_reset(struct scsi_cmnd *);
438 static int u14_34f_bios_param(struct scsi_device *, struct block_device *,
439 sector_t, int *);
440 static int u14_34f_slave_configure(struct scsi_device *);
441
442 static struct scsi_host_template driver_template = {
443 .name = "UltraStor 14F/34F rev. 8.10.00 ",
444 .detect = u14_34f_detect,
445 .release = u14_34f_release,
446 .queuecommand = u14_34f_queuecommand,
447 .eh_abort_handler = u14_34f_eh_abort,
448 .eh_host_reset_handler = u14_34f_eh_host_reset,
449 .bios_param = u14_34f_bios_param,
450 .slave_configure = u14_34f_slave_configure,
451 .this_id = 7,
452 .unchecked_isa_dma = 1,
453 .use_clustering = ENABLE_CLUSTERING,
454 };
455
456 #if !defined(__BIG_ENDIAN_BITFIELD) && !defined(__LITTLE_ENDIAN_BITFIELD)
457 #error "Adjust your <asm/byteorder.h> defines"
458 #endif
459
460 /* Values for the PRODUCT_ID ports for the 14/34F */
461 #define PRODUCT_ID1 0x56
462 #define PRODUCT_ID2 0x40 /* NOTE: Only upper nibble is used */
463
464 /* Subversion values */
465 #define ISA 0
466 #define ESA 1
467
468 #define OP_HOST_ADAPTER 0x1
469 #define OP_SCSI 0x2
470 #define OP_RESET 0x4
471 #define DTD_SCSI 0x0
472 #define DTD_IN 0x1
473 #define DTD_OUT 0x2
474 #define DTD_NONE 0x3
475 #define HA_CMD_INQUIRY 0x1
476 #define HA_CMD_SELF_DIAG 0x2
477 #define HA_CMD_READ_BUFF 0x3
478 #define HA_CMD_WRITE_BUFF 0x4
479
480 #undef DEBUG_LINKED_COMMANDS
481 #undef DEBUG_DETECT
482 #undef DEBUG_INTERRUPT
483 #undef DEBUG_RESET
484 #undef DEBUG_GENERATE_ERRORS
485 #undef DEBUG_GENERATE_ABORTS
486 #undef DEBUG_GEOMETRY
487
488 #define MAX_ISA 3
489 #define MAX_VESA 1
490 #define MAX_EISA 0
491 #define MAX_PCI 0
492 #define MAX_BOARDS (MAX_ISA + MAX_VESA + MAX_EISA + MAX_PCI)
493 #define MAX_CHANNEL 1
494 #define MAX_LUN 8
495 #define MAX_TARGET 8
496 #define MAX_MAILBOXES 16
497 #define MAX_SGLIST 32
498 #define MAX_SAFE_SGLIST 16
499 #define MAX_INTERNAL_RETRIES 64
500 #define MAX_CMD_PER_LUN 2
501 #define MAX_TAGGED_CMD_PER_LUN (MAX_MAILBOXES - MAX_CMD_PER_LUN)
502
503 #define SKIP ULONG_MAX
504 #define FALSE 0
505 #define TRUE 1
506 #define FREE 0
507 #define IN_USE 1
508 #define LOCKED 2
509 #define IN_RESET 3
510 #define IGNORE 4
511 #define READY 5
512 #define ABORTING 6
513 #define NO_DMA 0xff
514 #define MAXLOOP 10000
515 #define TAG_DISABLED 0
516 #define TAG_SIMPLE 1
517 #define TAG_ORDERED 2
518
519 #define REG_LCL_MASK 0
520 #define REG_LCL_INTR 1
521 #define REG_SYS_MASK 2
522 #define REG_SYS_INTR 3
523 #define REG_PRODUCT_ID1 4
524 #define REG_PRODUCT_ID2 5
525 #define REG_CONFIG1 6
526 #define REG_CONFIG2 7
527 #define REG_OGM 8
528 #define REG_ICM 12
529 #define REGION_SIZE 13UL
530 #define BSY_ASSERTED 0x01
531 #define IRQ_ASSERTED 0x01
532 #define CMD_RESET 0xc0
533 #define CMD_OGM_INTR 0x01
534 #define CMD_CLR_INTR 0x01
535 #define CMD_ENA_INTR 0x81
536 #define ASOK 0x00
537 #define ASST 0x91
538
539 #define YESNO(a) ((a) ? 'y' : 'n')
540 #define TLDEV(type) ((type) == TYPE_DISK || (type) == TYPE_ROM)
541
542 #define PACKED __attribute__((packed))
543
544 struct sg_list {
545 unsigned int address; /* Segment Address */
546 unsigned int num_bytes; /* Segment Length */
547 };
548
549 /* MailBox SCSI Command Packet */
550 struct mscp {
551
552 #if defined(__BIG_ENDIAN_BITFIELD)
553 unsigned char sg:1, ca:1, dcn:1, xdir:2, opcode:3;
554 unsigned char lun: 3, channel:2, target:3;
555 #else
556 unsigned char opcode: 3, /* type of command */
557 xdir: 2, /* data transfer direction */
558 dcn: 1, /* disable disconnect */
559 ca: 1, /* use cache (if available) */
560 sg: 1; /* scatter/gather operation */
561 unsigned char target: 3, /* SCSI target id */
562 channel: 2, /* SCSI channel number */
563 lun: 3; /* SCSI logical unit number */
564 #endif
565
566 unsigned int data_address PACKED; /* transfer data pointer */
567 unsigned int data_len PACKED; /* length in bytes */
568 unsigned int link_address PACKED; /* for linking command chains */
569 unsigned char clink_id; /* identifies command in chain */
570 unsigned char use_sg; /* (if sg is set) 8 bytes per list */
571 unsigned char sense_len;
572 unsigned char cdb_len; /* 6, 10, or 12 */
573 unsigned char cdb[12]; /* SCSI Command Descriptor Block */
574 unsigned char adapter_status; /* non-zero indicates HA error */
575 unsigned char target_status; /* non-zero indicates target error */
576 unsigned int sense_addr PACKED;
577
578 /* Additional fields begin here. */
579 struct scsi_cmnd *SCpnt;
580 unsigned int cpp_index; /* cp index */
581
582 /* All the cp structure is zero filled by queuecommand except the
583 following CP_TAIL_SIZE bytes, initialized by detect */
584 dma_addr_t cp_dma_addr; /* dma handle for this cp structure */
585 struct sg_list *sglist; /* pointer to the allocated SG list */
586 };
587
588 #define CP_TAIL_SIZE (sizeof(struct sglist *) + sizeof(dma_addr_t))
589
590 struct hostdata {
591 struct mscp cp[MAX_MAILBOXES]; /* Mailboxes for this board */
592 unsigned int cp_stat[MAX_MAILBOXES]; /* FREE, IN_USE, LOCKED, IN_RESET */
593 unsigned int last_cp_used; /* Index of last mailbox used */
594 unsigned int iocount; /* Total i/o done for this board */
595 int board_number; /* Number of this board */
596 char board_name[16]; /* Name of this board */
597 int in_reset; /* True if board is doing a reset */
598 int target_to[MAX_TARGET][MAX_CHANNEL]; /* N. of timeout errors on target */
599 int target_redo[MAX_TARGET][MAX_CHANNEL]; /* If TRUE redo i/o on target */
600 unsigned int retries; /* Number of internal retries */
601 unsigned long last_retried_pid; /* Pid of last retried command */
602 unsigned char subversion; /* Bus type, either ISA or ESA */
603 struct pci_dev *pdev; /* Always NULL */
604 unsigned char heads;
605 unsigned char sectors;
606 char board_id[256]; /* data from INQUIRY on this board */
607 };
608
609 static struct Scsi_Host *sh[MAX_BOARDS + 1];
610 static const char *driver_name = "Ux4F";
611 static char sha[MAX_BOARDS];
612 static DEFINE_SPINLOCK(driver_lock);
613
614 /* Initialize num_boards so that ihdlr can work while detect is in progress */
615 static unsigned int num_boards = MAX_BOARDS;
616
617 static unsigned long io_port[] = {
618
619 /* Space for MAX_INT_PARAM ports usable while loading as a module */
620 SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP, SKIP,
621 SKIP, SKIP,
622
623 /* Possible ISA/VESA ports */
624 0x330, 0x340, 0x230, 0x240, 0x210, 0x130, 0x140,
625
626 /* End of list */
627 0x0
628 };
629
630 #define HD(board) ((struct hostdata *) &sh[board]->hostdata)
631 #define BN(board) (HD(board)->board_name)
632
633 /* Device is Little Endian */
634 #define H2DEV(x) cpu_to_le32(x)
635 #define DEV2H(x) le32_to_cpu(x)
636
637 static irqreturn_t do_interrupt_handler(int, void *);
638 static void flush_dev(struct scsi_device *, unsigned long, unsigned int, unsigned int);
639 static int do_trace = FALSE;
640 static int setup_done = FALSE;
641 static int link_statistics;
642 static int ext_tran = FALSE;
643
644 #if defined(HAVE_OLD_UX4F_FIRMWARE)
645 static int have_old_firmware = TRUE;
646 #else
647 static int have_old_firmware = FALSE;
648 #endif
649
650 #if defined(CONFIG_SCSI_U14_34F_TAGGED_QUEUE)
651 static int tag_mode = TAG_SIMPLE;
652 #else
653 static int tag_mode = TAG_DISABLED;
654 #endif
655
656 #if defined(CONFIG_SCSI_U14_34F_LINKED_COMMANDS)
657 static int linked_comm = TRUE;
658 #else
659 static int linked_comm = FALSE;
660 #endif
661
662 #if defined(CONFIG_SCSI_U14_34F_MAX_TAGS)
663 static int max_queue_depth = CONFIG_SCSI_U14_34F_MAX_TAGS;
664 #else
665 static int max_queue_depth = MAX_CMD_PER_LUN;
666 #endif
667
668 #define MAX_INT_PARAM 10
669 #define MAX_BOOT_OPTIONS_SIZE 256
670 static char boot_options[MAX_BOOT_OPTIONS_SIZE];
671
672 #if defined(MODULE)
673 #include <linux/module.h>
674 #include <linux/moduleparam.h>
675
676 module_param_string(u14_34f, boot_options, MAX_BOOT_OPTIONS_SIZE, 0);
677 MODULE_PARM_DESC(u14_34f, " equivalent to the \"u14-34f=...\" kernel boot " \
678 "option." \
679 " Example: modprobe u14-34f \"u14_34f=0x340,0x330,lc:y,tm:0,mq:4\"");
680 MODULE_AUTHOR("Dario Ballabio");
681 MODULE_LICENSE("GPL");
682 MODULE_DESCRIPTION("UltraStor 14F/34F SCSI Driver");
683
684 #endif
685
686 static int u14_34f_slave_configure(struct scsi_device *dev) {
687 int j, tqd, utqd;
688 char *tag_suffix, *link_suffix;
689 struct Scsi_Host *host = dev->host;
690
691 j = ((struct hostdata *) host->hostdata)->board_number;
692
693 utqd = MAX_CMD_PER_LUN;
694 tqd = max_queue_depth;
695
696 if (TLDEV(dev->type) && dev->tagged_supported)
697
698 if (tag_mode == TAG_SIMPLE) {
699 scsi_adjust_queue_depth(dev, MSG_SIMPLE_TAG, tqd);
700 tag_suffix = ", simple tags";
701 }
702 else if (tag_mode == TAG_ORDERED) {
703 scsi_adjust_queue_depth(dev, MSG_ORDERED_TAG, tqd);
704 tag_suffix = ", ordered tags";
705 }
706 else {
707 scsi_adjust_queue_depth(dev, 0, tqd);
708 tag_suffix = ", no tags";
709 }
710
711 else if (TLDEV(dev->type) && linked_comm) {
712 scsi_adjust_queue_depth(dev, 0, tqd);
713 tag_suffix = ", untagged";
714 }
715
716 else {
717 scsi_adjust_queue_depth(dev, 0, utqd);
718 tag_suffix = "";
719 }
720
721 if (TLDEV(dev->type) && linked_comm && dev->queue_depth > 2)
722 link_suffix = ", sorted";
723 else if (TLDEV(dev->type))
724 link_suffix = ", unsorted";
725 else
726 link_suffix = "";
727
728 sdev_printk(KERN_INFO, dev, "cmds/lun %d%s%s.\n",
729 dev->queue_depth, link_suffix, tag_suffix);
730
731 return FALSE;
732 }
733
734 static int wait_on_busy(unsigned long iobase, unsigned int loop) {
735
736 while (inb(iobase + REG_LCL_INTR) & BSY_ASSERTED) {
737 udelay(1L);
738 if (--loop == 0) return TRUE;
739 }
740
741 return FALSE;
742 }
743
744 static int board_inquiry(unsigned int j) {
745 struct mscp *cpp;
746 dma_addr_t id_dma_addr;
747 unsigned int limit = 0;
748 unsigned long time;
749
750 id_dma_addr = pci_map_single(HD(j)->pdev, HD(j)->board_id,
751 sizeof(HD(j)->board_id), PCI_DMA_BIDIRECTIONAL);
752 cpp = &HD(j)->cp[0];
753 cpp->cp_dma_addr = pci_map_single(HD(j)->pdev, cpp, sizeof(struct mscp),
754 PCI_DMA_BIDIRECTIONAL);
755 memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE);
756 cpp->opcode = OP_HOST_ADAPTER;
757 cpp->xdir = DTD_IN;
758 cpp->data_address = H2DEV(id_dma_addr);
759 cpp->data_len = H2DEV(sizeof(HD(j)->board_id));
760 cpp->cdb_len = 6;
761 cpp->cdb[0] = HA_CMD_INQUIRY;
762
763 if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
764 printk("%s: board_inquiry, adapter busy.\n", BN(j));
765 return TRUE;
766 }
767
768 HD(j)->cp_stat[0] = IGNORE;
769
770 /* Clear the interrupt indication */
771 outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
772
773 /* Store pointer in OGM address bytes */
774 outl(H2DEV(cpp->cp_dma_addr), sh[j]->io_port + REG_OGM);
775
776 /* Issue OGM interrupt */
777 outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
778
779 spin_unlock_irq(&driver_lock);
780 time = jiffies;
781 while ((jiffies - time) < HZ && limit++ < 20000) udelay(100L);
782 spin_lock_irq(&driver_lock);
783
784 if (cpp->adapter_status || HD(j)->cp_stat[0] != FREE) {
785 HD(j)->cp_stat[0] = FREE;
786 printk("%s: board_inquiry, err 0x%x.\n", BN(j), cpp->adapter_status);
787 return TRUE;
788 }
789
790 pci_unmap_single(HD(j)->pdev, cpp->cp_dma_addr, sizeof(struct mscp),
791 PCI_DMA_BIDIRECTIONAL);
792 pci_unmap_single(HD(j)->pdev, id_dma_addr, sizeof(HD(j)->board_id),
793 PCI_DMA_BIDIRECTIONAL);
794 return FALSE;
795 }
796
797 static int port_detect \
798 (unsigned long port_base, unsigned int j, struct scsi_host_template *tpnt) {
799 unsigned char irq, dma_channel, subversion, i;
800 unsigned char in_byte;
801 char *bus_type, dma_name[16];
802
803 /* Allowed BIOS base addresses (NULL indicates reserved) */
804 unsigned long bios_segment_table[8] = {
805 0,
806 0xc4000, 0xc8000, 0xcc000, 0xd0000,
807 0xd4000, 0xd8000, 0xdc000
808 };
809
810 /* Allowed IRQs */
811 unsigned char interrupt_table[4] = { 15, 14, 11, 10 };
812
813 /* Allowed DMA channels for ISA (0 indicates reserved) */
814 unsigned char dma_channel_table[4] = { 5, 6, 7, 0 };
815
816 /* Head/sector mappings */
817 struct {
818 unsigned char heads;
819 unsigned char sectors;
820 } mapping_table[4] = {
821 { 16, 63 }, { 64, 32 }, { 64, 63 }, { 64, 32 }
822 };
823
824 struct config_1 {
825
826 #if defined(__BIG_ENDIAN_BITFIELD)
827 unsigned char dma_channel: 2, interrupt:2,
828 removable_disks_as_fixed:1, bios_segment: 3;
829 #else
830 unsigned char bios_segment: 3, removable_disks_as_fixed: 1,
831 interrupt: 2, dma_channel: 2;
832 #endif
833
834 } config_1;
835
836 struct config_2 {
837
838 #if defined(__BIG_ENDIAN_BITFIELD)
839 unsigned char tfr_port: 2, bios_drive_number: 1,
840 mapping_mode: 2, ha_scsi_id: 3;
841 #else
842 unsigned char ha_scsi_id: 3, mapping_mode: 2,
843 bios_drive_number: 1, tfr_port: 2;
844 #endif
845
846 } config_2;
847
848 char name[16];
849
850 sprintf(name, "%s%d", driver_name, j);
851
852 if (!request_region(port_base, REGION_SIZE, driver_name)) {
853 #if defined(DEBUG_DETECT)
854 printk("%s: address 0x%03lx in use, skipping probe.\n", name, port_base);
855 #endif
856 goto fail;
857 }
858
859 spin_lock_irq(&driver_lock);
860
861 if (inb(port_base + REG_PRODUCT_ID1) != PRODUCT_ID1) goto freelock;
862
863 in_byte = inb(port_base + REG_PRODUCT_ID2);
864
865 if ((in_byte & 0xf0) != PRODUCT_ID2) goto freelock;
866
867 *(char *)&config_1 = inb(port_base + REG_CONFIG1);
868 *(char *)&config_2 = inb(port_base + REG_CONFIG2);
869
870 irq = interrupt_table[config_1.interrupt];
871 dma_channel = dma_channel_table[config_1.dma_channel];
872 subversion = (in_byte & 0x0f);
873
874 /* Board detected, allocate its IRQ */
875 if (request_irq(irq, do_interrupt_handler,
876 IRQF_DISABLED | ((subversion == ESA) ? IRQF_SHARED : 0),
877 driver_name, (void *) &sha[j])) {
878 printk("%s: unable to allocate IRQ %u, detaching.\n", name, irq);
879 goto freelock;
880 }
881
882 if (subversion == ISA && request_dma(dma_channel, driver_name)) {
883 printk("%s: unable to allocate DMA channel %u, detaching.\n",
884 name, dma_channel);
885 goto freeirq;
886 }
887
888 if (have_old_firmware) tpnt->use_clustering = DISABLE_CLUSTERING;
889
890 spin_unlock_irq(&driver_lock);
891 sh[j] = scsi_register(tpnt, sizeof(struct hostdata));
892 spin_lock_irq(&driver_lock);
893
894 if (sh[j] == NULL) {
895 printk("%s: unable to register host, detaching.\n", name);
896 goto freedma;
897 }
898
899 sh[j]->io_port = port_base;
900 sh[j]->unique_id = port_base;
901 sh[j]->n_io_port = REGION_SIZE;
902 sh[j]->base = bios_segment_table[config_1.bios_segment];
903 sh[j]->irq = irq;
904 sh[j]->sg_tablesize = MAX_SGLIST;
905 sh[j]->this_id = config_2.ha_scsi_id;
906 sh[j]->can_queue = MAX_MAILBOXES;
907 sh[j]->cmd_per_lun = MAX_CMD_PER_LUN;
908
909 #if defined(DEBUG_DETECT)
910 {
911 unsigned char sys_mask, lcl_mask;
912
913 sys_mask = inb(sh[j]->io_port + REG_SYS_MASK);
914 lcl_mask = inb(sh[j]->io_port + REG_LCL_MASK);
915 printk("SYS_MASK 0x%x, LCL_MASK 0x%x.\n", sys_mask, lcl_mask);
916 }
917 #endif
918
919 /* Probably a bogus host scsi id, set it to the dummy value */
920 if (sh[j]->this_id == 0) sh[j]->this_id = -1;
921
922 /* If BIOS is disabled, force enable interrupts */
923 if (sh[j]->base == 0) outb(CMD_ENA_INTR, sh[j]->io_port + REG_SYS_MASK);
924
925 memset(HD(j), 0, sizeof(struct hostdata));
926 HD(j)->heads = mapping_table[config_2.mapping_mode].heads;
927 HD(j)->sectors = mapping_table[config_2.mapping_mode].sectors;
928 HD(j)->subversion = subversion;
929 HD(j)->pdev = NULL;
930 HD(j)->board_number = j;
931
932 if (have_old_firmware) sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
933
934 if (HD(j)->subversion == ESA) {
935 sh[j]->unchecked_isa_dma = FALSE;
936 sh[j]->dma_channel = NO_DMA;
937 sprintf(BN(j), "U34F%d", j);
938 bus_type = "VESA";
939 }
940 else {
941 unsigned long flags;
942 sh[j]->unchecked_isa_dma = TRUE;
943
944 flags=claim_dma_lock();
945 disable_dma(dma_channel);
946 clear_dma_ff(dma_channel);
947 set_dma_mode(dma_channel, DMA_MODE_CASCADE);
948 enable_dma(dma_channel);
949 release_dma_lock(flags);
950
951 sh[j]->dma_channel = dma_channel;
952 sprintf(BN(j), "U14F%d", j);
953 bus_type = "ISA";
954 }
955
956 sh[j]->max_channel = MAX_CHANNEL - 1;
957 sh[j]->max_id = MAX_TARGET;
958 sh[j]->max_lun = MAX_LUN;
959
960 if (HD(j)->subversion == ISA && !board_inquiry(j)) {
961 HD(j)->board_id[40] = 0;
962
963 if (strcmp(&HD(j)->board_id[32], "06000600")) {
964 printk("%s: %s.\n", BN(j), &HD(j)->board_id[8]);
965 printk("%s: firmware %s is outdated, FW PROM should be 28004-006.\n",
966 BN(j), &HD(j)->board_id[32]);
967 sh[j]->hostt->use_clustering = DISABLE_CLUSTERING;
968 sh[j]->sg_tablesize = MAX_SAFE_SGLIST;
969 }
970 }
971
972 if (dma_channel == NO_DMA) sprintf(dma_name, "%s", "BMST");
973 else sprintf(dma_name, "DMA %u", dma_channel);
974
975 spin_unlock_irq(&driver_lock);
976
977 for (i = 0; i < sh[j]->can_queue; i++)
978 HD(j)->cp[i].cp_dma_addr = pci_map_single(HD(j)->pdev,
979 &HD(j)->cp[i], sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL);
980
981 for (i = 0; i < sh[j]->can_queue; i++)
982 if (! ((&HD(j)->cp[i])->sglist = kmalloc(
983 sh[j]->sg_tablesize * sizeof(struct sg_list),
984 (sh[j]->unchecked_isa_dma ? GFP_DMA : 0) | GFP_ATOMIC))) {
985 printk("%s: kmalloc SGlist failed, mbox %d, detaching.\n", BN(j), i);
986 goto release;
987 }
988
989 if (max_queue_depth > MAX_TAGGED_CMD_PER_LUN)
990 max_queue_depth = MAX_TAGGED_CMD_PER_LUN;
991
992 if (max_queue_depth < MAX_CMD_PER_LUN) max_queue_depth = MAX_CMD_PER_LUN;
993
994 if (tag_mode != TAG_DISABLED && tag_mode != TAG_SIMPLE)
995 tag_mode = TAG_ORDERED;
996
997 if (j == 0) {
998 printk("UltraStor 14F/34F: Copyright (C) 1994-2003 Dario Ballabio.\n");
999 printk("%s config options -> of:%c, tm:%d, lc:%c, mq:%d, et:%c.\n",
1000 driver_name, YESNO(have_old_firmware), tag_mode,
1001 YESNO(linked_comm), max_queue_depth, YESNO(ext_tran));
1002 }
1003
1004 printk("%s: %s 0x%03lx, BIOS 0x%05x, IRQ %u, %s, SG %d, MB %d.\n",
1005 BN(j), bus_type, (unsigned long)sh[j]->io_port, (int)sh[j]->base,
1006 sh[j]->irq, dma_name, sh[j]->sg_tablesize, sh[j]->can_queue);
1007
1008 if (sh[j]->max_id > 8 || sh[j]->max_lun > 8)
1009 printk("%s: wide SCSI support enabled, max_id %u, max_lun %u.\n",
1010 BN(j), sh[j]->max_id, sh[j]->max_lun);
1011
1012 for (i = 0; i <= sh[j]->max_channel; i++)
1013 printk("%s: SCSI channel %u enabled, host target ID %d.\n",
1014 BN(j), i, sh[j]->this_id);
1015
1016 return TRUE;
1017
1018 freedma:
1019 if (subversion == ISA) free_dma(dma_channel);
1020 freeirq:
1021 free_irq(irq, &sha[j]);
1022 freelock:
1023 spin_unlock_irq(&driver_lock);
1024 release_region(port_base, REGION_SIZE);
1025 fail:
1026 return FALSE;
1027
1028 release:
1029 u14_34f_release(sh[j]);
1030 return FALSE;
1031 }
1032
1033 static void internal_setup(char *str, int *ints) {
1034 int i, argc = ints[0];
1035 char *cur = str, *pc;
1036
1037 if (argc > 0) {
1038
1039 if (argc > MAX_INT_PARAM) argc = MAX_INT_PARAM;
1040
1041 for (i = 0; i < argc; i++) io_port[i] = ints[i + 1];
1042
1043 io_port[i] = 0;
1044 setup_done = TRUE;
1045 }
1046
1047 while (cur && (pc = strchr(cur, ':'))) {
1048 int val = 0, c = *++pc;
1049
1050 if (c == 'n' || c == 'N') val = FALSE;
1051 else if (c == 'y' || c == 'Y') val = TRUE;
1052 else val = (int) simple_strtoul(pc, NULL, 0);
1053
1054 if (!strncmp(cur, "lc:", 3)) linked_comm = val;
1055 else if (!strncmp(cur, "of:", 3)) have_old_firmware = val;
1056 else if (!strncmp(cur, "tm:", 3)) tag_mode = val;
1057 else if (!strncmp(cur, "tc:", 3)) tag_mode = val;
1058 else if (!strncmp(cur, "mq:", 3)) max_queue_depth = val;
1059 else if (!strncmp(cur, "ls:", 3)) link_statistics = val;
1060 else if (!strncmp(cur, "et:", 3)) ext_tran = val;
1061
1062 if ((cur = strchr(cur, ','))) ++cur;
1063 }
1064
1065 return;
1066 }
1067
1068 static int option_setup(char *str) {
1069 int ints[MAX_INT_PARAM];
1070 char *cur = str;
1071 int i = 1;
1072
1073 while (cur && isdigit(*cur) && i <= MAX_INT_PARAM) {
1074 ints[i++] = simple_strtoul(cur, NULL, 0);
1075
1076 if ((cur = strchr(cur, ',')) != NULL) cur++;
1077 }
1078
1079 ints[0] = i - 1;
1080 internal_setup(cur, ints);
1081 return 1;
1082 }
1083
1084 static int u14_34f_detect(struct scsi_host_template *tpnt) {
1085 unsigned int j = 0, k;
1086
1087 tpnt->proc_name = "u14-34f";
1088
1089 if(strlen(boot_options)) option_setup(boot_options);
1090
1091 #if defined(MODULE)
1092 /* io_port could have been modified when loading as a module */
1093 if(io_port[0] != SKIP) {
1094 setup_done = TRUE;
1095 io_port[MAX_INT_PARAM] = 0;
1096 }
1097 #endif
1098
1099 for (k = 0; k < MAX_BOARDS + 1; k++) sh[k] = NULL;
1100
1101 for (k = 0; io_port[k]; k++) {
1102
1103 if (io_port[k] == SKIP) continue;
1104
1105 if (j < MAX_BOARDS && port_detect(io_port[k], j, tpnt)) j++;
1106 }
1107
1108 num_boards = j;
1109 return j;
1110 }
1111
1112 static void map_dma(unsigned int i, unsigned int j) {
1113 unsigned int data_len = 0;
1114 unsigned int k, pci_dir;
1115 int count;
1116 struct scatterlist *sg;
1117 struct mscp *cpp;
1118 struct scsi_cmnd *SCpnt;
1119
1120 cpp = &HD(j)->cp[i]; SCpnt = cpp->SCpnt;
1121 pci_dir = SCpnt->sc_data_direction;
1122
1123 if (SCpnt->sense_buffer)
1124 cpp->sense_addr = H2DEV(pci_map_single(HD(j)->pdev, SCpnt->sense_buffer,
1125 SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE));
1126
1127 cpp->sense_len = SCSI_SENSE_BUFFERSIZE;
1128
1129 if (scsi_bufflen(SCpnt)) {
1130 count = scsi_dma_map(SCpnt);
1131 BUG_ON(count < 0);
1132
1133 scsi_for_each_sg(SCpnt, sg, count, k) {
1134 cpp->sglist[k].address = H2DEV(sg_dma_address(sg));
1135 cpp->sglist[k].num_bytes = H2DEV(sg_dma_len(sg));
1136 data_len += sg->length;
1137 }
1138
1139 cpp->sg = TRUE;
1140 cpp->use_sg = scsi_sg_count(SCpnt);
1141 cpp->data_address =
1142 H2DEV(pci_map_single(HD(j)->pdev, cpp->sglist,
1143 cpp->use_sg * sizeof(struct sg_list),
1144 pci_dir));
1145 cpp->data_len = H2DEV(data_len);
1146
1147 } else {
1148 pci_dir = PCI_DMA_BIDIRECTIONAL;
1149 cpp->data_len = H2DEV(scsi_bufflen(SCpnt));
1150 }
1151 }
1152
1153 static void unmap_dma(unsigned int i, unsigned int j) {
1154 unsigned int pci_dir;
1155 struct mscp *cpp;
1156 struct scsi_cmnd *SCpnt;
1157
1158 cpp = &HD(j)->cp[i]; SCpnt = cpp->SCpnt;
1159 pci_dir = SCpnt->sc_data_direction;
1160
1161 if (DEV2H(cpp->sense_addr))
1162 pci_unmap_single(HD(j)->pdev, DEV2H(cpp->sense_addr),
1163 DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
1164
1165 scsi_dma_unmap(SCpnt);
1166
1167 if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL;
1168
1169 if (DEV2H(cpp->data_address))
1170 pci_unmap_single(HD(j)->pdev, DEV2H(cpp->data_address),
1171 DEV2H(cpp->data_len), pci_dir);
1172 }
1173
1174 static void sync_dma(unsigned int i, unsigned int j) {
1175 unsigned int pci_dir;
1176 struct mscp *cpp;
1177 struct scsi_cmnd *SCpnt;
1178
1179 cpp = &HD(j)->cp[i]; SCpnt = cpp->SCpnt;
1180 pci_dir = SCpnt->sc_data_direction;
1181
1182 if (DEV2H(cpp->sense_addr))
1183 pci_dma_sync_single_for_cpu(HD(j)->pdev, DEV2H(cpp->sense_addr),
1184 DEV2H(cpp->sense_len), PCI_DMA_FROMDEVICE);
1185
1186 if (scsi_sg_count(SCpnt))
1187 pci_dma_sync_sg_for_cpu(HD(j)->pdev, scsi_sglist(SCpnt),
1188 scsi_sg_count(SCpnt), pci_dir);
1189
1190 if (!DEV2H(cpp->data_len)) pci_dir = PCI_DMA_BIDIRECTIONAL;
1191
1192 if (DEV2H(cpp->data_address))
1193 pci_dma_sync_single_for_cpu(HD(j)->pdev, DEV2H(cpp->data_address),
1194 DEV2H(cpp->data_len), pci_dir);
1195 }
1196
1197 static void scsi_to_dev_dir(unsigned int i, unsigned int j) {
1198 unsigned int k;
1199
1200 static const unsigned char data_out_cmds[] = {
1201 0x0a, 0x2a, 0x15, 0x55, 0x04, 0x07, 0x18, 0x1d, 0x24, 0x2e,
1202 0x30, 0x31, 0x32, 0x38, 0x39, 0x3a, 0x3b, 0x3d, 0x3f, 0x40,
1203 0x41, 0x4c, 0xaa, 0xae, 0xb0, 0xb1, 0xb2, 0xb6, 0xea, 0x1b, 0x5d
1204 };
1205
1206 static const unsigned char data_none_cmds[] = {
1207 0x01, 0x0b, 0x10, 0x11, 0x13, 0x16, 0x17, 0x19, 0x2b, 0x1e,
1208 0x2c, 0xac, 0x2f, 0xaf, 0x33, 0xb3, 0x35, 0x36, 0x45, 0x47,
1209 0x48, 0x49, 0xa9, 0x4b, 0xa5, 0xa6, 0xb5, 0x00
1210 };
1211
1212 struct mscp *cpp;
1213 struct scsi_cmnd *SCpnt;
1214
1215 cpp = &HD(j)->cp[i]; SCpnt = cpp->SCpnt;
1216
1217 if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
1218 cpp->xdir = DTD_IN;
1219 return;
1220 }
1221 else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
1222 cpp->xdir = DTD_OUT;
1223 return;
1224 }
1225 else if (SCpnt->sc_data_direction == DMA_NONE) {
1226 cpp->xdir = DTD_NONE;
1227 return;
1228 }
1229
1230 if (SCpnt->sc_data_direction != DMA_BIDIRECTIONAL)
1231 panic("%s: qcomm, invalid SCpnt->sc_data_direction.\n", BN(j));
1232
1233 cpp->xdir = DTD_IN;
1234
1235 for (k = 0; k < ARRAY_SIZE(data_out_cmds); k++)
1236 if (SCpnt->cmnd[0] == data_out_cmds[k]) {
1237 cpp->xdir = DTD_OUT;
1238 break;
1239 }
1240
1241 if (cpp->xdir == DTD_IN)
1242 for (k = 0; k < ARRAY_SIZE(data_none_cmds); k++)
1243 if (SCpnt->cmnd[0] == data_none_cmds[k]) {
1244 cpp->xdir = DTD_NONE;
1245 break;
1246 }
1247
1248 }
1249
1250 static int u14_34f_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) {
1251 unsigned int i, j, k;
1252 struct mscp *cpp;
1253
1254 /* j is the board number */
1255 j = ((struct hostdata *) SCpnt->device->host->hostdata)->board_number;
1256
1257 if (SCpnt->host_scribble)
1258 panic("%s: qcomm, pid %ld, SCpnt %p already active.\n",
1259 BN(j), SCpnt->serial_number, SCpnt);
1260
1261 /* i is the mailbox number, look for the first free mailbox
1262 starting from last_cp_used */
1263 i = HD(j)->last_cp_used + 1;
1264
1265 for (k = 0; k < sh[j]->can_queue; k++, i++) {
1266
1267 if (i >= sh[j]->can_queue) i = 0;
1268
1269 if (HD(j)->cp_stat[i] == FREE) {
1270 HD(j)->last_cp_used = i;
1271 break;
1272 }
1273 }
1274
1275 if (k == sh[j]->can_queue) {
1276 printk("%s: qcomm, no free mailbox.\n", BN(j));
1277 return 1;
1278 }
1279
1280 /* Set pointer to control packet structure */
1281 cpp = &HD(j)->cp[i];
1282
1283 memset(cpp, 0, sizeof(struct mscp) - CP_TAIL_SIZE);
1284 SCpnt->scsi_done = done;
1285 cpp->cpp_index = i;
1286 SCpnt->host_scribble = (unsigned char *) &cpp->cpp_index;
1287
1288 if (do_trace) printk("%s: qcomm, mbox %d, target %d.%d:%d, pid %ld.\n",
1289 BN(j), i, SCpnt->device->channel, SCpnt->device->id,
1290 SCpnt->device->lun, SCpnt->serial_number);
1291
1292 cpp->opcode = OP_SCSI;
1293 cpp->channel = SCpnt->device->channel;
1294 cpp->target = SCpnt->device->id;
1295 cpp->lun = SCpnt->device->lun;
1296 cpp->SCpnt = SCpnt;
1297 cpp->cdb_len = SCpnt->cmd_len;
1298 memcpy(cpp->cdb, SCpnt->cmnd, SCpnt->cmd_len);
1299
1300 /* Use data transfer direction SCpnt->sc_data_direction */
1301 scsi_to_dev_dir(i, j);
1302
1303 /* Map DMA buffers and SG list */
1304 map_dma(i, j);
1305
1306 if (linked_comm && SCpnt->device->queue_depth > 2
1307 && TLDEV(SCpnt->device->type)) {
1308 HD(j)->cp_stat[i] = READY;
1309 flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), j, FALSE);
1310 return 0;
1311 }
1312
1313 if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
1314 unmap_dma(i, j);
1315 SCpnt->host_scribble = NULL;
1316 scmd_printk(KERN_INFO, SCpnt,
1317 "qcomm, pid %ld, adapter busy.\n", SCpnt->serial_number);
1318 return 1;
1319 }
1320
1321 /* Store pointer in OGM address bytes */
1322 outl(H2DEV(cpp->cp_dma_addr), sh[j]->io_port + REG_OGM);
1323
1324 /* Issue OGM interrupt */
1325 outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
1326
1327 HD(j)->cp_stat[i] = IN_USE;
1328 return 0;
1329 }
1330
1331 static int u14_34f_eh_abort(struct scsi_cmnd *SCarg) {
1332 unsigned int i, j;
1333
1334 j = ((struct hostdata *) SCarg->device->host->hostdata)->board_number;
1335
1336 if (SCarg->host_scribble == NULL) {
1337 scmd_printk(KERN_INFO, SCarg, "abort, pid %ld inactive.\n",
1338 SCarg->serial_number);
1339 return SUCCESS;
1340 }
1341
1342 i = *(unsigned int *)SCarg->host_scribble;
1343 scmd_printk(KERN_INFO, SCarg, "abort, mbox %d, pid %ld.\n",
1344 i, SCarg->serial_number);
1345
1346 if (i >= sh[j]->can_queue)
1347 panic("%s: abort, invalid SCarg->host_scribble.\n", BN(j));
1348
1349 if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
1350 printk("%s: abort, timeout error.\n", BN(j));
1351 return FAILED;
1352 }
1353
1354 if (HD(j)->cp_stat[i] == FREE) {
1355 printk("%s: abort, mbox %d is free.\n", BN(j), i);
1356 return SUCCESS;
1357 }
1358
1359 if (HD(j)->cp_stat[i] == IN_USE) {
1360 printk("%s: abort, mbox %d is in use.\n", BN(j), i);
1361
1362 if (SCarg != HD(j)->cp[i].SCpnt)
1363 panic("%s: abort, mbox %d, SCarg %p, cp SCpnt %p.\n",
1364 BN(j), i, SCarg, HD(j)->cp[i].SCpnt);
1365
1366 if (inb(sh[j]->io_port + REG_SYS_INTR) & IRQ_ASSERTED)
1367 printk("%s: abort, mbox %d, interrupt pending.\n", BN(j), i);
1368
1369 return FAILED;
1370 }
1371
1372 if (HD(j)->cp_stat[i] == IN_RESET) {
1373 printk("%s: abort, mbox %d is in reset.\n", BN(j), i);
1374 return FAILED;
1375 }
1376
1377 if (HD(j)->cp_stat[i] == LOCKED) {
1378 printk("%s: abort, mbox %d is locked.\n", BN(j), i);
1379 return SUCCESS;
1380 }
1381
1382 if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
1383 unmap_dma(i, j);
1384 SCarg->result = DID_ABORT << 16;
1385 SCarg->host_scribble = NULL;
1386 HD(j)->cp_stat[i] = FREE;
1387 printk("%s, abort, mbox %d ready, DID_ABORT, pid %ld done.\n",
1388 BN(j), i, SCarg->serial_number);
1389 SCarg->scsi_done(SCarg);
1390 return SUCCESS;
1391 }
1392
1393 panic("%s: abort, mbox %d, invalid cp_stat.\n", BN(j), i);
1394 }
1395
1396 static int u14_34f_eh_host_reset(struct scsi_cmnd *SCarg) {
1397 unsigned int i, j, k, c, limit = 0;
1398 unsigned long time;
1399 int arg_done = FALSE;
1400 struct scsi_cmnd *SCpnt;
1401
1402 j = ((struct hostdata *) SCarg->device->host->hostdata)->board_number;
1403 scmd_printk(KERN_INFO, SCarg, "reset, enter, pid %ld.\n", SCarg->serial_number);
1404
1405 spin_lock_irq(sh[j]->host_lock);
1406
1407 if (SCarg->host_scribble == NULL)
1408 printk("%s: reset, pid %ld inactive.\n", BN(j), SCarg->serial_number);
1409
1410 if (HD(j)->in_reset) {
1411 printk("%s: reset, exit, already in reset.\n", BN(j));
1412 spin_unlock_irq(sh[j]->host_lock);
1413 return FAILED;
1414 }
1415
1416 if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
1417 printk("%s: reset, exit, timeout error.\n", BN(j));
1418 spin_unlock_irq(sh[j]->host_lock);
1419 return FAILED;
1420 }
1421
1422 HD(j)->retries = 0;
1423
1424 for (c = 0; c <= sh[j]->max_channel; c++)
1425 for (k = 0; k < sh[j]->max_id; k++) {
1426 HD(j)->target_redo[k][c] = TRUE;
1427 HD(j)->target_to[k][c] = 0;
1428 }
1429
1430 for (i = 0; i < sh[j]->can_queue; i++) {
1431
1432 if (HD(j)->cp_stat[i] == FREE) continue;
1433
1434 if (HD(j)->cp_stat[i] == LOCKED) {
1435 HD(j)->cp_stat[i] = FREE;
1436 printk("%s: reset, locked mbox %d forced free.\n", BN(j), i);
1437 continue;
1438 }
1439
1440 if (!(SCpnt = HD(j)->cp[i].SCpnt))
1441 panic("%s: reset, mbox %d, SCpnt == NULL.\n", BN(j), i);
1442
1443 if (HD(j)->cp_stat[i] == READY || HD(j)->cp_stat[i] == ABORTING) {
1444 HD(j)->cp_stat[i] = ABORTING;
1445 printk("%s: reset, mbox %d aborting, pid %ld.\n",
1446 BN(j), i, SCpnt->serial_number);
1447 }
1448
1449 else {
1450 HD(j)->cp_stat[i] = IN_RESET;
1451 printk("%s: reset, mbox %d in reset, pid %ld.\n",
1452 BN(j), i, SCpnt->serial_number);
1453 }
1454
1455 if (SCpnt->host_scribble == NULL)
1456 panic("%s: reset, mbox %d, garbled SCpnt.\n", BN(j), i);
1457
1458 if (*(unsigned int *)SCpnt->host_scribble != i)
1459 panic("%s: reset, mbox %d, index mismatch.\n", BN(j), i);
1460
1461 if (SCpnt->scsi_done == NULL)
1462 panic("%s: reset, mbox %d, SCpnt->scsi_done == NULL.\n", BN(j), i);
1463
1464 if (SCpnt == SCarg) arg_done = TRUE;
1465 }
1466
1467 if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
1468 printk("%s: reset, cannot reset, timeout error.\n", BN(j));
1469 spin_unlock_irq(sh[j]->host_lock);
1470 return FAILED;
1471 }
1472
1473 outb(CMD_RESET, sh[j]->io_port + REG_LCL_INTR);
1474 printk("%s: reset, board reset done, enabling interrupts.\n", BN(j));
1475
1476 #if defined(DEBUG_RESET)
1477 do_trace = TRUE;
1478 #endif
1479
1480 HD(j)->in_reset = TRUE;
1481
1482 spin_unlock_irq(sh[j]->host_lock);
1483 time = jiffies;
1484 while ((jiffies - time) < (10 * HZ) && limit++ < 200000) udelay(100L);
1485 spin_lock_irq(sh[j]->host_lock);
1486
1487 printk("%s: reset, interrupts disabled, loops %d.\n", BN(j), limit);
1488
1489 for (i = 0; i < sh[j]->can_queue; i++) {
1490
1491 if (HD(j)->cp_stat[i] == IN_RESET) {
1492 SCpnt = HD(j)->cp[i].SCpnt;
1493 unmap_dma(i, j);
1494 SCpnt->result = DID_RESET << 16;
1495 SCpnt->host_scribble = NULL;
1496
1497 /* This mailbox is still waiting for its interrupt */
1498 HD(j)->cp_stat[i] = LOCKED;
1499
1500 printk("%s, reset, mbox %d locked, DID_RESET, pid %ld done.\n",
1501 BN(j), i, SCpnt->serial_number);
1502 }
1503
1504 else if (HD(j)->cp_stat[i] == ABORTING) {
1505 SCpnt = HD(j)->cp[i].SCpnt;
1506 unmap_dma(i, j);
1507 SCpnt->result = DID_RESET << 16;
1508 SCpnt->host_scribble = NULL;
1509
1510 /* This mailbox was never queued to the adapter */
1511 HD(j)->cp_stat[i] = FREE;
1512
1513 printk("%s, reset, mbox %d aborting, DID_RESET, pid %ld done.\n",
1514 BN(j), i, SCpnt->serial_number);
1515 }
1516
1517 else
1518
1519 /* Any other mailbox has already been set free by interrupt */
1520 continue;
1521
1522 SCpnt->scsi_done(SCpnt);
1523 }
1524
1525 HD(j)->in_reset = FALSE;
1526 do_trace = FALSE;
1527
1528 if (arg_done) printk("%s: reset, exit, pid %ld done.\n", BN(j), SCarg->serial_number);
1529 else printk("%s: reset, exit.\n", BN(j));
1530
1531 spin_unlock_irq(sh[j]->host_lock);
1532 return SUCCESS;
1533 }
1534
1535 static int u14_34f_bios_param(struct scsi_device *disk,
1536 struct block_device *bdev, sector_t capacity, int *dkinfo) {
1537 unsigned int j = 0;
1538 unsigned int size = capacity;
1539
1540 dkinfo[0] = HD(j)->heads;
1541 dkinfo[1] = HD(j)->sectors;
1542 dkinfo[2] = size / (HD(j)->heads * HD(j)->sectors);
1543
1544 if (ext_tran && (scsicam_bios_param(bdev, capacity, dkinfo) < 0)) {
1545 dkinfo[0] = 255;
1546 dkinfo[1] = 63;
1547 dkinfo[2] = size / (dkinfo[0] * dkinfo[1]);
1548 }
1549
1550 #if defined (DEBUG_GEOMETRY)
1551 printk ("%s: bios_param, head=%d, sec=%d, cyl=%d.\n", driver_name,
1552 dkinfo[0], dkinfo[1], dkinfo[2]);
1553 #endif
1554
1555 return FALSE;
1556 }
1557
1558 static void sort(unsigned long sk[], unsigned int da[], unsigned int n,
1559 unsigned int rev) {
1560 unsigned int i, j, k, y;
1561 unsigned long x;
1562
1563 for (i = 0; i < n - 1; i++) {
1564 k = i;
1565
1566 for (j = k + 1; j < n; j++)
1567 if (rev) {
1568 if (sk[j] > sk[k]) k = j;
1569 }
1570 else {
1571 if (sk[j] < sk[k]) k = j;
1572 }
1573
1574 if (k != i) {
1575 x = sk[k]; sk[k] = sk[i]; sk[i] = x;
1576 y = da[k]; da[k] = da[i]; da[i] = y;
1577 }
1578 }
1579
1580 return;
1581 }
1582
1583 static int reorder(unsigned int j, unsigned long cursec,
1584 unsigned int ihdlr, unsigned int il[], unsigned int n_ready) {
1585 struct scsi_cmnd *SCpnt;
1586 struct mscp *cpp;
1587 unsigned int k, n;
1588 unsigned int rev = FALSE, s = TRUE, r = TRUE;
1589 unsigned int input_only = TRUE, overlap = FALSE;
1590 unsigned long sl[n_ready], pl[n_ready], ll[n_ready];
1591 unsigned long maxsec = 0, minsec = ULONG_MAX, seek = 0, iseek = 0;
1592 unsigned long ioseek = 0;
1593
1594 static unsigned int flushcount = 0, batchcount = 0, sortcount = 0;
1595 static unsigned int readycount = 0, ovlcount = 0, inputcount = 0;
1596 static unsigned int readysorted = 0, revcount = 0;
1597 static unsigned long seeksorted = 0, seeknosort = 0;
1598
1599 if (link_statistics && !(++flushcount % link_statistics))
1600 printk("fc %d bc %d ic %d oc %d rc %d rs %d sc %d re %d"\
1601 " av %ldK as %ldK.\n", flushcount, batchcount, inputcount,
1602 ovlcount, readycount, readysorted, sortcount, revcount,
1603 seeknosort / (readycount + 1),
1604 seeksorted / (readycount + 1));
1605
1606 if (n_ready <= 1) return FALSE;
1607
1608 for (n = 0; n < n_ready; n++) {
1609 k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
1610
1611 if (!(cpp->xdir == DTD_IN)) input_only = FALSE;
1612
1613 if (blk_rq_pos(SCpnt->request) < minsec)
1614 minsec = blk_rq_pos(SCpnt->request);
1615 if (blk_rq_pos(SCpnt->request) > maxsec)
1616 maxsec = blk_rq_pos(SCpnt->request);
1617
1618 sl[n] = blk_rq_pos(SCpnt->request);
1619 ioseek += blk_rq_sectors(SCpnt->request);
1620
1621 if (!n) continue;
1622
1623 if (sl[n] < sl[n - 1]) s = FALSE;
1624 if (sl[n] > sl[n - 1]) r = FALSE;
1625
1626 if (link_statistics) {
1627 if (sl[n] > sl[n - 1])
1628 seek += sl[n] - sl[n - 1];
1629 else
1630 seek += sl[n - 1] - sl[n];
1631 }
1632
1633 }
1634
1635 if (link_statistics) {
1636 if (cursec > sl[0]) seek += cursec - sl[0]; else seek += sl[0] - cursec;
1637 }
1638
1639 if (cursec > ((maxsec + minsec) / 2)) rev = TRUE;
1640
1641 if (ioseek > ((maxsec - minsec) / 2)) rev = FALSE;
1642
1643 if (!((rev && r) || (!rev && s))) sort(sl, il, n_ready, rev);
1644
1645 if (!input_only) for (n = 0; n < n_ready; n++) {
1646 k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
1647 ll[n] = blk_rq_sectors(SCpnt->request); pl[n] = SCpnt->serial_number;
1648
1649 if (!n) continue;
1650
1651 if ((sl[n] == sl[n - 1]) || (!rev && ((sl[n - 1] + ll[n - 1]) > sl[n]))
1652 || (rev && ((sl[n] + ll[n]) > sl[n - 1]))) overlap = TRUE;
1653 }
1654
1655 if (overlap) sort(pl, il, n_ready, FALSE);
1656
1657 if (link_statistics) {
1658 if (cursec > sl[0]) iseek = cursec - sl[0]; else iseek = sl[0] - cursec;
1659 batchcount++; readycount += n_ready; seeknosort += seek / 1024;
1660 if (input_only) inputcount++;
1661 if (overlap) { ovlcount++; seeksorted += iseek / 1024; }
1662 else seeksorted += (iseek + maxsec - minsec) / 1024;
1663 if (rev && !r) { revcount++; readysorted += n_ready; }
1664 if (!rev && !s) { sortcount++; readysorted += n_ready; }
1665 }
1666
1667 #if defined(DEBUG_LINKED_COMMANDS)
1668 if (link_statistics && (overlap || !(flushcount % link_statistics)))
1669 for (n = 0; n < n_ready; n++) {
1670 k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
1671 printk("%s %d.%d:%d pid %ld mb %d fc %d nr %d sec %ld ns %u"\
1672 " cur %ld s:%c r:%c rev:%c in:%c ov:%c xd %d.\n",
1673 (ihdlr ? "ihdlr" : "qcomm"), SCpnt->channel, SCpnt->target,
1674 SCpnt->lun, SCpnt->serial_number, k, flushcount, n_ready,
1675 blk_rq_pos(SCpnt->request), blk_rq_sectors(SCpnt->request),
1676 cursec, YESNO(s), YESNO(r), YESNO(rev), YESNO(input_only),
1677 YESNO(overlap), cpp->xdir);
1678 }
1679 #endif
1680 return overlap;
1681 }
1682
1683 static void flush_dev(struct scsi_device *dev, unsigned long cursec, unsigned int j,
1684 unsigned int ihdlr) {
1685 struct scsi_cmnd *SCpnt;
1686 struct mscp *cpp;
1687 unsigned int k, n, n_ready = 0, il[MAX_MAILBOXES];
1688
1689 for (k = 0; k < sh[j]->can_queue; k++) {
1690
1691 if (HD(j)->cp_stat[k] != READY && HD(j)->cp_stat[k] != IN_USE) continue;
1692
1693 cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
1694
1695 if (SCpnt->device != dev) continue;
1696
1697 if (HD(j)->cp_stat[k] == IN_USE) return;
1698
1699 il[n_ready++] = k;
1700 }
1701
1702 if (reorder(j, cursec, ihdlr, il, n_ready)) n_ready = 1;
1703
1704 for (n = 0; n < n_ready; n++) {
1705 k = il[n]; cpp = &HD(j)->cp[k]; SCpnt = cpp->SCpnt;
1706
1707 if (wait_on_busy(sh[j]->io_port, MAXLOOP)) {
1708 scmd_printk(KERN_INFO, SCpnt,
1709 "%s, pid %ld, mbox %d, adapter"
1710 " busy, will abort.\n", (ihdlr ? "ihdlr" : "qcomm"),
1711 SCpnt->serial_number, k);
1712 HD(j)->cp_stat[k] = ABORTING;
1713 continue;
1714 }
1715
1716 outl(H2DEV(cpp->cp_dma_addr), sh[j]->io_port + REG_OGM);
1717 outb(CMD_OGM_INTR, sh[j]->io_port + REG_LCL_INTR);
1718 HD(j)->cp_stat[k] = IN_USE;
1719 }
1720
1721 }
1722
1723 static irqreturn_t ihdlr(unsigned int j)
1724 {
1725 struct scsi_cmnd *SCpnt;
1726 unsigned int i, k, c, status, tstatus, reg, ret;
1727 struct mscp *spp, *cpp;
1728 int irq = sh[j]->irq;
1729
1730 /* Check if this board need to be serviced */
1731 if (!((reg = inb(sh[j]->io_port + REG_SYS_INTR)) & IRQ_ASSERTED)) goto none;
1732
1733 HD(j)->iocount++;
1734
1735 if (do_trace) printk("%s: ihdlr, enter, irq %d, count %d.\n", BN(j), irq,
1736 HD(j)->iocount);
1737
1738 /* Check if this board is still busy */
1739 if (wait_on_busy(sh[j]->io_port, 20 * MAXLOOP)) {
1740 outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
1741 printk("%s: ihdlr, busy timeout error, irq %d, reg 0x%x, count %d.\n",
1742 BN(j), irq, reg, HD(j)->iocount);
1743 goto none;
1744 }
1745
1746 ret = inl(sh[j]->io_port + REG_ICM);
1747
1748 /* Clear interrupt pending flag */
1749 outb(CMD_CLR_INTR, sh[j]->io_port + REG_SYS_INTR);
1750
1751 /* Find the mailbox to be serviced on this board */
1752 for (i = 0; i < sh[j]->can_queue; i++)
1753 if (H2DEV(HD(j)->cp[i].cp_dma_addr) == ret) break;
1754
1755 if (i >= sh[j]->can_queue)
1756 panic("%s: ihdlr, invalid mscp bus address %p, cp0 %p.\n", BN(j),
1757 (void *)ret, (void *)H2DEV(HD(j)->cp[0].cp_dma_addr));
1758
1759 cpp = &(HD(j)->cp[i]);
1760 spp = cpp;
1761
1762 #if defined(DEBUG_GENERATE_ABORTS)
1763 if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 500) < 3)) goto handled;
1764 #endif
1765
1766 if (HD(j)->cp_stat[i] == IGNORE) {
1767 HD(j)->cp_stat[i] = FREE;
1768 goto handled;
1769 }
1770 else if (HD(j)->cp_stat[i] == LOCKED) {
1771 HD(j)->cp_stat[i] = FREE;
1772 printk("%s: ihdlr, mbox %d unlocked, count %d.\n", BN(j), i,
1773 HD(j)->iocount);
1774 goto handled;
1775 }
1776 else if (HD(j)->cp_stat[i] == FREE) {
1777 printk("%s: ihdlr, mbox %d is free, count %d.\n", BN(j), i,
1778 HD(j)->iocount);
1779 goto handled;
1780 }
1781 else if (HD(j)->cp_stat[i] == IN_RESET)
1782 printk("%s: ihdlr, mbox %d is in reset.\n", BN(j), i);
1783 else if (HD(j)->cp_stat[i] != IN_USE)
1784 panic("%s: ihdlr, mbox %d, invalid cp_stat: %d.\n",
1785 BN(j), i, HD(j)->cp_stat[i]);
1786
1787 HD(j)->cp_stat[i] = FREE;
1788 SCpnt = cpp->SCpnt;
1789
1790 if (SCpnt == NULL) panic("%s: ihdlr, mbox %d, SCpnt == NULL.\n", BN(j), i);
1791
1792 if (SCpnt->host_scribble == NULL)
1793 panic("%s: ihdlr, mbox %d, pid %ld, SCpnt %p garbled.\n", BN(j), i,
1794 SCpnt->serial_number, SCpnt);
1795
1796 if (*(unsigned int *)SCpnt->host_scribble != i)
1797 panic("%s: ihdlr, mbox %d, pid %ld, index mismatch %d.\n",
1798 BN(j), i, SCpnt->serial_number, *(unsigned int *)SCpnt->host_scribble);
1799
1800 sync_dma(i, j);
1801
1802 if (linked_comm && SCpnt->device->queue_depth > 2
1803 && TLDEV(SCpnt->device->type))
1804 flush_dev(SCpnt->device, blk_rq_pos(SCpnt->request), j, TRUE);
1805
1806 tstatus = status_byte(spp->target_status);
1807
1808 #if defined(DEBUG_GENERATE_ERRORS)
1809 if ((HD(j)->iocount > 500) && ((HD(j)->iocount % 200) < 2))
1810 spp->adapter_status = 0x01;
1811 #endif
1812
1813 switch (spp->adapter_status) {
1814 case ASOK: /* status OK */
1815
1816 /* Forces a reset if a disk drive keeps returning BUSY */
1817 if (tstatus == BUSY && SCpnt->device->type != TYPE_TAPE)
1818 status = DID_ERROR << 16;
1819
1820 /* If there was a bus reset, redo operation on each target */
1821 else if (tstatus != GOOD && SCpnt->device->type == TYPE_DISK
1822 && HD(j)->target_redo[scmd_id(SCpnt)][scmd_channel(SCpnt)])
1823 status = DID_BUS_BUSY << 16;
1824
1825 /* Works around a flaw in scsi.c */
1826 else if (tstatus == CHECK_CONDITION
1827 && SCpnt->device->type == TYPE_DISK
1828 && (SCpnt->sense_buffer[2] & 0xf) == RECOVERED_ERROR)
1829 status = DID_BUS_BUSY << 16;
1830
1831 else
1832 status = DID_OK << 16;
1833
1834 if (tstatus == GOOD)
1835 HD(j)->target_redo[scmd_id(SCpnt)][scmd_channel(SCpnt)] = FALSE;
1836
1837 if (spp->target_status && SCpnt->device->type == TYPE_DISK &&
1838 (!(tstatus == CHECK_CONDITION && HD(j)->iocount <= 1000 &&
1839 (SCpnt->sense_buffer[2] & 0xf) == NOT_READY)))
1840 scmd_printk(KERN_INFO, SCpnt,
1841 "ihdlr, pid %ld, target_status 0x%x, sense key 0x%x.\n",
1842 SCpnt->serial_number, spp->target_status,
1843 SCpnt->sense_buffer[2]);
1844
1845 HD(j)->target_to[scmd_id(SCpnt)][scmd_channel(SCpnt)] = 0;
1846
1847 if (HD(j)->last_retried_pid == SCpnt->serial_number) HD(j)->retries = 0;
1848
1849 break;
1850 case ASST: /* Selection Time Out */
1851
1852 if (HD(j)->target_to[scmd_id(SCpnt)][scmd_channel(SCpnt)] > 1)
1853 status = DID_ERROR << 16;
1854 else {
1855 status = DID_TIME_OUT << 16;
1856 HD(j)->target_to[scmd_id(SCpnt)][scmd_channel(SCpnt)]++;
1857 }
1858
1859 break;
1860
1861 /* Perform a limited number of internal retries */
1862 case 0x93: /* Unexpected bus free */
1863 case 0x94: /* Target bus phase sequence failure */
1864 case 0x96: /* Illegal SCSI command */
1865 case 0xa3: /* SCSI bus reset error */
1866
1867 for (c = 0; c <= sh[j]->max_channel; c++)
1868 for (k = 0; k < sh[j]->max_id; k++)
1869 HD(j)->target_redo[k][c] = TRUE;
1870
1871
1872 case 0x92: /* Data over/under-run */
1873
1874 if (SCpnt->device->type != TYPE_TAPE
1875 && HD(j)->retries < MAX_INTERNAL_RETRIES) {
1876
1877 #if defined(DID_SOFT_ERROR)
1878 status = DID_SOFT_ERROR << 16;
1879 #else
1880 status = DID_BUS_BUSY << 16;
1881 #endif
1882
1883 HD(j)->retries++;
1884 HD(j)->last_retried_pid = SCpnt->serial_number;
1885 }
1886 else
1887 status = DID_ERROR << 16;
1888
1889 break;
1890 case 0x01: /* Invalid command */
1891 case 0x02: /* Invalid parameters */
1892 case 0x03: /* Invalid data list */
1893 case 0x84: /* SCSI bus abort error */
1894 case 0x9b: /* Auto request sense error */
1895 case 0x9f: /* Unexpected command complete message error */
1896 case 0xff: /* Invalid parameter in the S/G list */
1897 default:
1898 status = DID_ERROR << 16;
1899 break;
1900 }
1901
1902 SCpnt->result = status | spp->target_status;
1903
1904 #if defined(DEBUG_INTERRUPT)
1905 if (SCpnt->result || do_trace)
1906 #else
1907 if ((spp->adapter_status != ASOK && HD(j)->iocount > 1000) ||
1908 (spp->adapter_status != ASOK &&
1909 spp->adapter_status != ASST && HD(j)->iocount <= 1000) ||
1910 do_trace || msg_byte(spp->target_status))
1911 #endif
1912 scmd_printk(KERN_INFO, SCpnt, "ihdlr, mbox %2d, err 0x%x:%x,"\
1913 " pid %ld, reg 0x%x, count %d.\n",
1914 i, spp->adapter_status, spp->target_status, SCpnt->serial_number,
1915 reg, HD(j)->iocount);
1916
1917 unmap_dma(i, j);
1918
1919 /* Set the command state to inactive */
1920 SCpnt->host_scribble = NULL;
1921
1922 SCpnt->scsi_done(SCpnt);
1923
1924 if (do_trace) printk("%s: ihdlr, exit, irq %d, count %d.\n", BN(j), irq,
1925 HD(j)->iocount);
1926
1927 handled:
1928 return IRQ_HANDLED;
1929 none:
1930 return IRQ_NONE;
1931 }
1932
1933 static irqreturn_t do_interrupt_handler(int irq, void *shap) {
1934 unsigned int j;
1935 unsigned long spin_flags;
1936 irqreturn_t ret;
1937
1938 /* Check if the interrupt must be processed by this handler */
1939 if ((j = (unsigned int)((char *)shap - sha)) >= num_boards) return IRQ_NONE;
1940
1941 spin_lock_irqsave(sh[j]->host_lock, spin_flags);
1942 ret = ihdlr(j);
1943 spin_unlock_irqrestore(sh[j]->host_lock, spin_flags);
1944 return ret;
1945 }
1946
1947 static int u14_34f_release(struct Scsi_Host *shpnt) {
1948 unsigned int i, j;
1949
1950 for (j = 0; sh[j] != NULL && sh[j] != shpnt; j++);
1951
1952 if (sh[j] == NULL)
1953 panic("%s: release, invalid Scsi_Host pointer.\n", driver_name);
1954
1955 for (i = 0; i < sh[j]->can_queue; i++)
1956 kfree((&HD(j)->cp[i])->sglist);
1957
1958 for (i = 0; i < sh[j]->can_queue; i++)
1959 pci_unmap_single(HD(j)->pdev, HD(j)->cp[i].cp_dma_addr,
1960 sizeof(struct mscp), PCI_DMA_BIDIRECTIONAL);
1961
1962 free_irq(sh[j]->irq, &sha[j]);
1963
1964 if (sh[j]->dma_channel != NO_DMA)
1965 free_dma(sh[j]->dma_channel);
1966
1967 release_region(sh[j]->io_port, sh[j]->n_io_port);
1968 scsi_unregister(sh[j]);
1969 return FALSE;
1970 }
1971
1972 #include "scsi_module.c"
1973
1974 #ifndef MODULE
1975 __setup("u14-34f=", option_setup);
1976 #endif /* end MODULE */
1977
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