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Import 2.3.18pre1
[davej-history.git] / drivers / scsi / fdomain.c
blob1805e9e975bef3153967f77e5ffe8735af8b0f74
1 /* fdomain.c -- Future Domain TMC-16x0 SCSI driver
2 * Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu
3 * Revised: Mon Dec 28 21:59:02 1998 by faith@acm.org
4 * Author: Rickard E. Faith, faith@cs.unc.edu
5 * Copyright 1992-1996, 1998 Rickard E. Faith (faith@acm.org)
6
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the
9 * Free Software Foundation; either version 2, or (at your option) any
10 * later version.
11
12 * This program is distributed in the hope that it will be useful, but
13 * WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * General Public License for more details.
16
17 * You should have received a copy of the GNU General Public License along
18 * with this program; if not, write to the Free Software Foundation, Inc.,
19 * 675 Mass Ave, Cambridge, MA 02139, USA.
20
21 **************************************************************************
22
23 SUMMARY:
24
25 Future Domain BIOS versions supported for autodetect:
26 2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61
27 Chips are supported:
28 TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70
29 Boards supported:
30 Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX
31 Future Domain TMC-3260 (PCI)
32 Quantum ISA-200S, ISA-250MG
33 Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead]
34 IBM ?
35 LILO/INSMOD command-line options:
36 fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]
37
38
39
40 NOTE:
41
42 The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it.
43 Use the aic7xxx driver for this board.
44
45 The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right
46 driver for that card. Unfortunately, the boxes will probably just say
47 "2920", so you'll have to look on the card for a Future Domain logo, or a
48 letter after the 2920.
49
50
51
52 THANKS:
53
54 Thanks to Adaptec for providing PCI boards for testing. This finally
55 enabled me to test the PCI detection and correct it for PCI boards that do
56 not have a BIOS at a standard ISA location. For PCI boards, LILO/INSMOD
57 command-line options should no longer be needed. --RF 18Nov98
58
59
60
61 DESCRIPTION:
62
63 This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680
64 TMC-1650/1670, and TMC-3260 SCSI host adapters. The 1650 and 1670 have a
65 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin
66 high-density external connector. The 1670 and 1680 have floppy disk
67 controllers built in. The TMC-3260 is a PCI bus card.
68
69 Future Domain's older boards are based on the TMC-1800 chip, and this
70 driver was originally written for a TMC-1680 board with the TMC-1800 chip.
71 More recently, boards are being produced with the TMC-18C50 and TMC-18C30
72 chips. The latest and greatest board may not work with this driver. If
73 you have to patch this driver so that it will recognize your board's BIOS
74 signature, then the driver may fail to function after the board is
75 detected.
76
77 Please note that the drive ordering that Future Domain implemented in BIOS
78 versions 3.4 and 3.5 is the opposite of the order (currently) used by the
79 rest of the SCSI industry. If you have BIOS version 3.4 or 3.5, and have
80 more then one drive, then the drive ordering will be the reverse of that
81 which you see under DOS. For example, under DOS SCSI ID 0 will be D: and
82 SCSI ID 1 will be C: (the boot device). Under Linux, SCSI ID 0 will be
83 /dev/sda and SCSI ID 1 will be /dev/sdb. The Linux ordering is consistent
84 with that provided by all the other SCSI drivers for Linux. If you want
85 this changed, you will probably have to patch the higher level SCSI code.
86 If you do so, please send me patches that are protected by #ifdefs.
87
88 If you have a TMC-8xx or TMC-9xx board, then this is not the driver for
89 your board. Please refer to the Seagate driver for more information and
90 possible support.
91
92
93
94 HISTORY:
95
96 Linux Driver Driver
97 Version Version Date Support/Notes
98
99 0.0 3 May 1992 V2.0 BIOS; 1800 chip
100 0.97 1.9 28 Jul 1992
101 0.98.6 3.1 27 Nov 1992
102 0.99 3.2 9 Dec 1992
103
104 0.99.3 3.3 10 Jan 1993 V3.0 BIOS
105 0.99.5 3.5 18 Feb 1993
106 0.99.10 3.6 15 May 1993 V3.2 BIOS; 18C50 chip
107 0.99.11 3.17 3 Jul 1993 (now under RCS)
108 0.99.12 3.18 13 Aug 1993
109 0.99.14 5.6 31 Oct 1993 (reselection code removed)
110
111 0.99.15 5.9 23 Jan 1994 V3.4 BIOS (preliminary)
112 1.0.8/1.1.1 5.15 1 Apr 1994 V3.4 BIOS; 18C30 chip (preliminary)
113 1.0.9/1.1.3 5.16 7 Apr 1994 V3.4 BIOS; 18C30 chip
114 1.1.38 5.18 30 Jul 1994 36C70 chip (PCI version of 18C30)
115 1.1.62 5.20 2 Nov 1994 V3.5 BIOS
116 1.1.73 5.22 7 Dec 1994 Quantum ISA-200S board; V2.0 BIOS
117
118 1.1.82 5.26 14 Jan 1995 V3.5 BIOS; TMC-1610M/MER/MEX board
119 1.2.10 5.28 5 Jun 1995 Quantum ISA-250MG board; V2.0, V2.01 BIOS
120 1.3.4 5.31 23 Jun 1995 PCI BIOS-32 detection (preliminary)
121 1.3.7 5.33 4 Jul 1995 PCI BIOS-32 detection
122 1.3.28 5.36 17 Sep 1995 V3.61 BIOS; LILO command-line support
123 1.3.34 5.39 12 Oct 1995 V3.60 BIOS; /proc
124 1.3.72 5.39 8 Feb 1996 Adaptec AHA-2920 board
125 1.3.85 5.41 4 Apr 1996
126 2.0.12 5.44 8 Aug 1996 Use ID 7 for all PCI cards
127 2.1.1 5.45 2 Oct 1996 Update ROM accesses for 2.1.x
128 2.1.97 5.46 23 Apr 1998 Rewritten PCI detection routines [mj]
129 2.1.11x 5.47 9 Aug 1998 Touched for 8 SCSI disk majors support
130 5.48 18 Nov 1998 BIOS no longer needed for PCI detection
131 2.2.0 5.50 28 Dec 1998 Support insmod parameters
132
133
134 REFERENCES USED:
135
136 "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation,
137 1990.
138
139 "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain
140 Corporation, January 1992.
141
142 "LXT SCSI Products: Specifications and OEM Technical Manual (Revision
143 B/September 1991)", Maxtor Corporation, 1991.
144
145 "7213S product Manual (Revision P3)", Maxtor Corporation, 1992.
146
147 "Draft Proposed American National Standard: Small Computer System
148 Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109,
149 revision 10h, October 17, 1991)
150
151 Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric
152 Youngdale (ericy@cais.com), 1992.
153
154 Private communication, Tuong Le (Future Domain Engineering department),
155 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and
156 TMC-18C30 detection.)
157
158 Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page
159 60 (2.39: Disk Partition Table Layout).
160
161 "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page
162 6-1.
163
164
165
166 NOTES ON REFERENCES:
167
168 The Maxtor manuals were free. Maxtor telephone technical support is
169 great!
170
171 The Future Domain manuals were $25 and $35. They document the chip, not
172 the TMC-16x0 boards, so some information I had to guess at. In 1992,
173 Future Domain sold DOS BIOS source for $250 and the UN*X driver source was
174 $750, but these required a non-disclosure agreement, so even if I could
175 have afforded them, they would *not* have been useful for writing this
176 publically distributable driver. Future Domain technical support has
177 provided some information on the phone and have sent a few useful FAXs.
178 They have been much more helpful since they started to recognize that the
179 word "Linux" refers to an operating system :-).
180
181
182
183 ALPHA TESTERS:
184
185 There are many other alpha testers that come and go as the driver
186 develops. The people listed here were most helpful in times of greatest
187 need (mostly early on -- I've probably left out a few worthy people in
188 more recent times):
189
190 Todd Carrico (todd@wutc.wustl.edu), Dan Poirier (poirier@cs.unc.edu ), Ken
191 Corey (kenc@sol.acs.unt.edu), C. de Bruin (bruin@bruin@sterbbs.nl), Sakari
192 Aaltonen (sakaria@vipunen.hit.fi), John Rice (rice@xanth.cs.odu.edu), Brad
193 Yearwood (brad@optilink.com), and Ray Toy (toy@soho.crd.ge.com).
194
195 Special thanks to Tien-Wan Yang (twyang@cs.uh.edu), who graciously lent me
196 his 18C50-based card for debugging. He is the sole reason that this
197 driver works with the 18C50 chip.
198
199 Thanks to Dave Newman (dnewman@crl.com) for providing initial patches for
200 the version 3.4 BIOS.
201
202 Thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for providing
203 patches that support the TMC-3260, a PCI bus card with the 36C70 chip.
204 The 36C70 chip appears to be "completely compatible" with the 18C30 chip.
205
206 Thanks to Eric Kasten (tigger@petroglyph.cl.msu.edu) for providing the
207 patch for the version 3.5 BIOS.
208
209 Thanks for Stephen Henson (shenson@nyx10.cs.du.edu) for providing the
210 patch for the Quantum ISA-200S SCSI adapter.
211
212 Thanks to Adam Bowen for the signature to the 1610M/MER/MEX scsi cards, to
213 Martin Andrews (andrewm@ccfadm.eeg.ccf.org) for the signature to some
214 random TMC-1680 repackaged by IBM; and to Mintak Ng (mintak@panix.com) for
215 the version 3.61 BIOS signature.
216
217 Thanks for Mark Singer (elf@netcom.com) and Richard Simpson
218 (rsimpson@ewrcsdra.demon.co.uk) for more Quantum signatures and detective
219 work on the Quantum RAM layout.
220
221 Special thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for
222 providing patches for proper PCI BIOS32-mediated detection of the TMC-3260
223 card (a PCI bus card with the 36C70 chip). Please send James PCI-related
224 bug reports.
225
226 Thanks to Tom Cavin (tec@usa1.com) for preliminary command-line option
227 patches.
228
229 New PCI detection code written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
230
231 Insmod parameter code based on patches from Daniel Graham
232 <graham@balance.uoregon.edu>.
233
234 All of the alpha testers deserve much thanks.
235
236
237
238 NOTES ON USER DEFINABLE OPTIONS:
239
240 DEBUG: This turns on the printing of various debug information.
241
242 ENABLE_PARITY: This turns on SCSI parity checking. With the current
243 driver, all attached devices must support SCSI parity. If none of your
244 devices support parity, then you can probably get the driver to work by
245 turning this option off. I have no way of testing this, however, and it
246 would appear that no one ever uses this option.
247
248 FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
249 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by
250 the SCSI device, an interrupt will be raised. Therefore, this could be as
251 low as 0, or as high as 16. Note, however, that values which are too high
252 or too low seem to prevent any interrupts from occurring, and thereby lock
253 up the machine. I have found that 2 is a good number, but throughput may
254 be increased by changing this value to values which are close to 2.
255 Please let me know if you try any different values.
256
257 DO_DETECT: This activates some old scan code which was needed before the
258 high level drivers got fixed. If you are having trouble with the driver,
259 turning this on should not hurt, and might help. Please let me know if
260 this is the case, since this code will be removed from future drivers.
261
262 RESELECTION: This is no longer an option, since I gave up trying to
263 implement it in version 4.x of this driver. It did not improve
264 performance at all and made the driver unstable (because I never found one
265 of the two race conditions which were introduced by the multiple
266 outstanding command code). The instability seems a very high price to pay
267 just so that you don't have to wait for the tape to rewind. If you want
268 this feature implemented, send me patches. I'll be happy to send a copy
269 of my (broken) driver to anyone who would like to see a copy.
270
271 **************************************************************************/
272
273 #ifdef PCMCIA
274 #define MODULE
275 #endif
276
277 #ifdef MODULE
278 #include <linux/module.h>
279 #endif
280
281 #ifdef PCMCIA
282 #undef MODULE
283 #endif
284
285 #include <linux/sched.h>
286 #include <asm/io.h>
287 #include <linux/blk.h>
288 #include "scsi.h"
289 #include "hosts.h"
290 #include "fdomain.h"
291 #include <asm/system.h>
292 #include <linux/spinlock.h>
293 #include <linux/errno.h>
294 #include <linux/string.h>
295 #include <linux/ioport.h>
296 #include <linux/proc_fs.h>
297 #include <linux/pci.h>
298 #include <linux/stat.h>
299 #include <linux/delay.h>
300
301 #include <linux/config.h> /* for CONFIG_PCI */
302
303 struct proc_dir_entry proc_scsi_fdomain = {
304 PROC_SCSI_FDOMAIN, 7, "fdomain",
305 S_IFDIR | S_IRUGO | S_IXUGO, 2
306 };
307
308 #define VERSION "$Revision: 5.50 $"
309
310 /* START OF USER DEFINABLE OPTIONS */
311
312 #define DEBUG 1 /* Enable debugging output */
313 #define ENABLE_PARITY 1 /* Enable SCSI Parity */
314 #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */
315 #define DO_DETECT 0 /* Do device detection here (see scsi.c) */
316
317 /* END OF USER DEFINABLE OPTIONS */
318
319 #if DEBUG
320 #define EVERY_ACCESS 0 /* Write a line on every scsi access */
321 #define ERRORS_ONLY 1 /* Only write a line if there is an error */
322 #define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */
323 #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */
324 #define DEBUG_ABORT 1 /* Debug abort() routine */
325 #define DEBUG_RESET 1 /* Debug reset() routine */
326 #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */
327 #else
328 #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
329 #define ERRORS_ONLY 0
330 #define DEBUG_DETECT 0
331 #define DEBUG_MESSAGES 0
332 #define DEBUG_ABORT 0
333 #define DEBUG_RESET 0
334 #define DEBUG_RACE 0
335 #endif
336
337 /* Errors are reported on the line, so we don't need to report them again */
338 #if EVERY_ACCESS
339 #undef ERRORS_ONLY
340 #define ERRORS_ONLY 0
341 #endif
342
343 #if ENABLE_PARITY
344 #define PARITY_MASK 0x08
345 #else
346 #define PARITY_MASK 0x00
347 #endif
348
349 enum chip_type {
350 unknown = 0x00,
351 tmc1800 = 0x01,
352 tmc18c50 = 0x02,
353 tmc18c30 = 0x03,
354 };
355
356 enum {
357 in_arbitration = 0x02,
358 in_selection = 0x04,
359 in_other = 0x08,
360 disconnect = 0x10,
361 aborted = 0x20,
362 sent_ident = 0x40,
363 };
364
365 enum in_port_type {
366 Read_SCSI_Data = 0,
367 SCSI_Status = 1,
368 TMC_Status = 2,
369 FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
370 Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
371 LSB_ID_Code = 5,
372 MSB_ID_Code = 6,
373 Read_Loopback = 7,
374 SCSI_Data_NoACK = 8,
375 Interrupt_Status = 9,
376 Configuration1 = 10,
377 Configuration2 = 11, /* tmc18c50/tmc18c30 only */
378 Read_FIFO = 12,
379 FIFO_Data_Count = 14
380 };
381
382 enum out_port_type {
383 Write_SCSI_Data = 0,
384 SCSI_Cntl = 1,
385 Interrupt_Cntl = 2,
386 SCSI_Mode_Cntl = 3,
387 TMC_Cntl = 4,
388 Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
389 Write_Loopback = 7,
390 IO_Control = 11, /* tmc18c30 only */
391 Write_FIFO = 12
392 };
393
394 static int port_base = 0;
395 static unsigned long bios_base = 0;
396 static int bios_major = 0;
397 static int bios_minor = 0;
398 static int PCI_bus = 0;
399 static int Quantum = 0; /* Quantum board variant */
400 static int interrupt_level = 0;
401 static volatile int in_command = 0;
402 static Scsi_Cmnd *current_SC = NULL;
403 static enum chip_type chip = unknown;
404 static int adapter_mask = 0;
405 static int this_id = 0;
406 static int setup_called = 0;
407
408 #if DEBUG_RACE
409 static volatile int in_interrupt_flag = 0;
410 #endif
411
412 static int SCSI_Mode_Cntl_port;
413 static int FIFO_Data_Count_port;
414 static int Interrupt_Cntl_port;
415 static int Interrupt_Status_port;
416 static int Read_FIFO_port;
417 static int Read_SCSI_Data_port;
418 static int SCSI_Cntl_port;
419 static int SCSI_Data_NoACK_port;
420 static int SCSI_Status_port;
421 static int TMC_Cntl_port;
422 static int TMC_Status_port;
423 static int Write_FIFO_port;
424 static int Write_SCSI_Data_port;
425
426 static int FIFO_Size = 0x2000; /* 8k FIFO for
427 pre-tmc18c30 chips */
428
429 extern void do_fdomain_16x0_intr( int irq, void *dev_id,
430 struct pt_regs * regs );
431
432 #ifdef MODULE
433 /* Allow insmod parameters to be like LILO
434 parameters. For example:
435 insmod fdomain fdomain=0x140,11
436 */
437 static int fdomain[]={ 0, 0, 0 };
438 MODULE_PARM(fdomain, "2-3i");
439 #endif
440
441 static unsigned long addresses[] = {
442 0xc8000,
443 0xca000,
444 0xce000,
445 0xde000,
446 0xcc000, /* Extra addresses for PCI boards */
447 0xd0000,
448 0xe0000,
449 };
450 #define ADDRESS_COUNT (sizeof( addresses ) / sizeof( unsigned ))
451
452 static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
453 #define PORT_COUNT (sizeof( ports ) / sizeof( unsigned short ))
454
455 static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
456
457 /*
458
459 READ THIS BEFORE YOU ADD A SIGNATURE!
460
461 READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME!
462
463 READ EVERY WORD, ESPECIALLY THE WORD *NOT*
464
465 This driver works *ONLY* for Future Domain cards using the TMC-1800,
466 TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670,
467 and 1680. These are all 16-bit cards.
468
469 The following BIOS signature signatures are for boards which do *NOT*
470 work with this driver (these TMC-8xx and TMC-9xx boards may work with the
471 Seagate driver):
472
473 FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88
474 FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89
475 FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89
476 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90
477 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90
478 FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90
479 FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92
480
481 (The cards which do *NOT* work are all 8-bit cards -- although some of
482 them have a 16-bit form-factor, the upper 8-bits are used only for IRQs
483 and are *NOT* used for data. You can tell the difference by following
484 the tracings on the circuit board -- if only the IRQ lines are involved,
485 you have a "8-bit" card, and should *NOT* use this driver.)
486
487 */
488
489 struct signature {
490 const char *signature;
491 int sig_offset;
492 int sig_length;
493 int major_bios_version;
494 int minor_bios_version;
495 int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */
496 } signatures[] = {
497 /* 1 2 3 4 5 6 */
498 /* 123456789012345678901234567890123456789012345678901234567890 */
499 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 },
500 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 },
501 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 },
502 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 },
503 { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 },
504 { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 },
505 { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 },
506 { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 },
507 { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 },
508 { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 },
509 { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 },
510 { "IBM F1 P264/32", 5, 14, 3, -1, 1 },
511 /* This next signature may not be a 3.5 bios */
512 { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 },
513 { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 },
514 { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 },
515 { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 },
516 { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 },
517 { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 },
518
519 /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE
520 Also, fix the disk geometry code for your signature and send your
521 changes for faith@cs.unc.edu. Above all, do *NOT* change any old
522 signatures!
523
524 Note that the last line will match a "generic" 18XX bios. Because
525 Future Domain has changed the host SCSI ID and/or the location of the
526 geometry information in the on-board RAM area for each of the first
527 three BIOS's, it is still important to enter a fully qualified
528 signature in the table for any new BIOS's (after the host SCSI ID and
529 geometry location are verified). */
530 };
531
532 #define SIGNATURE_COUNT (sizeof( signatures ) / sizeof( struct signature ))
533
534 static void print_banner( struct Scsi_Host *shpnt )
535 {
536 if (!shpnt) return; /* This won't ever happen */
537
538 if (bios_major < 0 && bios_minor < 0) {
539 printk( "scsi%d: <fdomain> No BIOS; using scsi id %d\n",
540 shpnt->host_no, shpnt->this_id );
541 } else {
542 printk( "scsi%d: <fdomain> BIOS version ", shpnt->host_no );
543
544 if (bios_major >= 0) printk( "%d.", bios_major );
545 else printk( "?." );
546
547 if (bios_minor >= 0) printk( "%d", bios_minor );
548 else printk( "?." );
549
550 printk( " at 0x%lx using scsi id %d\n",
551 bios_base, shpnt->this_id );
552 }
553
554 /* If this driver works for later FD PCI
555 boards, we will have to modify banner
556 for additional PCI cards, but for now if
557 it's PCI it's a TMC-3260 - JTM */
558 printk( "scsi%d: <fdomain> %s chip at 0x%x irq ",
559 shpnt->host_no,
560 chip == tmc1800 ? "TMC-1800"
561 : (chip == tmc18c50 ? "TMC-18C50"
562 : (chip == tmc18c30 ?
563 (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30")
564 : "Unknown")),
565 port_base );
566
567 if (interrupt_level) printk( "%d", interrupt_level );
568 else printk( "<none>" );
569
570 printk( "\n" );
571 }
572
573 void fdomain_setup( char *str, int *ints )
574 {
575 if (setup_called++ || ints[0] < 2 || ints[0] > 3) {
576 printk( "scsi: <fdomain>"
577 " Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n" );
578 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
579 }
580
581 port_base = ints[0] >= 1 ? ints[1] : 0;
582 interrupt_level = ints[0] >= 2 ? ints[2] : 0;
583 this_id = ints[0] >= 3 ? ints[3] : 0;
584
585 bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */
586 }
587
588
589 static void do_pause( unsigned amount ) /* Pause for amount*10 milliseconds */
590 {
591 do {
592 udelay(10*1000);
593 } while (--amount);
594 }
595
596 inline static void fdomain_make_bus_idle( void )
597 {
598 outb( 0, SCSI_Cntl_port );
599 outb( 0, SCSI_Mode_Cntl_port );
600 if (chip == tmc18c50 || chip == tmc18c30)
601 outb( 0x21 | PARITY_MASK, TMC_Cntl_port ); /* Clear forced intr. */
602 else
603 outb( 0x01 | PARITY_MASK, TMC_Cntl_port );
604 }
605
606 static int fdomain_is_valid_port( int port )
607 {
608 #if DEBUG_DETECT
609 printk( " (%x%x),",
610 inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) );
611 #endif
612
613 /* The MCA ID is a unique id for each MCA compatible board. We
614 are using ISA boards, but Future Domain provides the MCA ID
615 anyway. We can use this ID to ensure that this is a Future
616 Domain TMC-1660/TMC-1680.
617 */
618
619 if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */
620 if (inb( port + LSB_ID_Code ) != 0x27) return 0;
621 if (inb( port + MSB_ID_Code ) != 0x61) return 0;
622 chip = tmc1800;
623 } else { /* test for 0xe960 id */
624 if (inb( port + MSB_ID_Code ) != 0x60) return 0;
625 chip = tmc18c50;
626
627 /* Try to toggle 32-bit mode. This only
628 works on an 18c30 chip. (User reports
629 say this works, so we should switch to
630 it in the near future.) */
631
632 outb( 0x80, port + IO_Control );
633 if ((inb( port + Configuration2 ) & 0x80) == 0x80) {
634 outb( 0x00, port + IO_Control );
635 if ((inb( port + Configuration2 ) & 0x80) == 0x00) {
636 chip = tmc18c30;
637 FIFO_Size = 0x800; /* 2k FIFO */
638 }
639 }
640 /* If that failed, we are an 18c50. */
641 }
642
643 return 1;
644 }
645
646 static int fdomain_test_loopback( void )
647 {
648 int i;
649 int result;
650
651 for (i = 0; i < 255; i++) {
652 outb( i, port_base + Write_Loopback );
653 result = inb( port_base + Read_Loopback );
654 if (i != result)
655 return 1;
656 }
657 return 0;
658 }
659
660 /* fdomain_get_irq assumes that we have a valid MCA ID for a
661 TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the
662 bios_base matches these ports. If someone was unlucky enough to have
663 purchased more than one Future Domain board, then they will have to
664 modify this code, as we only detect one board here. [The one with the
665 lowest bios_base.]
666
667 Note that this routine is only used for systems without a PCI BIOS32
668 (e.g., ISA bus). For PCI bus systems, this routine will likely fail
669 unless one of the IRQs listed in the ints array is used by the board.
670 Sometimes it is possible to use the computer's BIOS setup screen to
671 configure a PCI system so that one of these IRQs will be used by the
672 Future Domain card. */
673
674 static int fdomain_get_irq( int base )
675 {
676 int options = inb( base + Configuration1 );
677
678 #if DEBUG_DETECT
679 printk( "scsi: <fdomain> Options = %x\n", options );
680 #endif
681
682 /* Check for board with lowest bios_base --
683 this isn't valid for the 18c30 or for
684 boards on the PCI bus, so just assume we
685 have the right board. */
686
687 if (chip != tmc18c30
688 && !PCI_bus
689 && addresses[ (options & 0xc0) >> 6 ] != bios_base) return 0;
690
691 return ints[ (options & 0x0e) >> 1 ];
692 }
693
694 static int fdomain_isa_detect( int *irq, int *iobase )
695 {
696 int i, j;
697 int base;
698 int flag = 0;
699
700 #if DEBUG_DETECT
701 printk( "scsi: <fdomain> fdomain_isa_detect:" );
702 #endif
703
704 for (i = 0; !bios_base && i < ADDRESS_COUNT; i++) {
705 #if DEBUG_DETECT
706 printk( " %lx(%lx),", addresses[i], bios_base );
707 #endif
708 for (j = 0; !bios_base && j < SIGNATURE_COUNT; j++) {
709 if (check_signature(addresses[i] + signatures[j].sig_offset,
710 signatures[j].signature,
711 signatures[j].sig_length )) {
712 bios_major = signatures[j].major_bios_version;
713 bios_minor = signatures[j].minor_bios_version;
714 PCI_bus = (signatures[j].flag == 1);
715 Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0;
716 bios_base = addresses[i];
717 }
718 }
719 }
720
721 if (bios_major == 2) {
722 /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM.
723 Assuming the ROM is enabled (otherwise we wouldn't have been
724 able to read the ROM signature :-), then the ROM sets up the
725 RAM area with some magic numbers, such as a list of port
726 base addresses and a list of the disk "geometry" reported to
727 DOS (this geometry has nothing to do with physical geometry).
728 */
729
730 switch (Quantum) {
731 case 2: /* ISA_200S */
732 case 3: /* ISA_250MG */
733 base = readb(bios_base + 0x1fa2) + (readb(bios_base + 0x1fa3) << 8);
734 break;
735 case 4: /* ISA_200S (another one) */
736 base = readb(bios_base + 0x1fa3) + (readb(bios_base + 0x1fa4) << 8);
737 break;
738 default:
739 base = readb(bios_base + 0x1fcc) + (readb(bios_base + 0x1fcd) << 8);
740 break;
741 }
742
743 #if DEBUG_DETECT
744 printk( " %x,", base );
745 #endif
746
747 for (flag = 0, i = 0; !flag && i < PORT_COUNT; i++) {
748 if (base == ports[i])
749 ++flag;
750 }
751
752 if (flag && fdomain_is_valid_port( base )) {
753 *irq = fdomain_get_irq( base );
754 *iobase = base;
755 return 1;
756 }
757
758 /* This is a bad sign. It usually means that someone patched the
759 BIOS signature list (the signatures variable) to contain a BIOS
760 signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */
761
762 #if DEBUG_DETECT
763 printk( " RAM FAILED, " );
764 #endif
765 }
766
767 /* Anyway, the alternative to finding the address in the RAM is to just
768 search through every possible port address for one that is attached
769 to the Future Domain card. Don't panic, though, about reading all
770 these random port addresses -- there are rumors that the Future
771 Domain BIOS does something very similar.
772
773 Do not, however, check ports which the kernel knows are being used by
774 another driver. */
775
776 for (i = 0; i < PORT_COUNT; i++) {
777 base = ports[i];
778 if (check_region( base, 0x10 )) {
779 #if DEBUG_DETECT
780 printk( " (%x inuse),", base );
781 #endif
782 continue;
783 }
784 #if DEBUG_DETECT
785 printk( " %x,", base );
786 #endif
787 if ((flag = fdomain_is_valid_port( base ))) break;
788 }
789
790 #if DEBUG_DETECT
791 if (flag) printk( " SUCCESS\n" );
792 else printk( " FAILURE\n" );
793 #endif
794
795 if (!flag) return 0; /* iobase not found */
796
797 *irq = fdomain_get_irq( base );
798 *iobase = base;
799
800 return 1; /* success */
801 }
802
803 /* PCI detection function: int fdomain_pci_bios_detect(int* irq, int*
804 iobase) This function gets the Interrupt Level and I/O base address from
805 the PCI configuration registers. */
806
807 #ifdef CONFIG_PCI
808 static int fdomain_pci_bios_detect( int *irq, int *iobase )
809 {
810 unsigned int pci_irq; /* PCI interrupt line */
811 unsigned long pci_base; /* PCI I/O base address */
812 struct pci_dev *pdev = NULL;
813
814 if (!pci_present()) return 0;
815
816 #if DEBUG_DETECT
817 /* Tell how to print a list of the known PCI devices from bios32 and
818 list vendor and device IDs being used if in debug mode. */
819
820 printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" );
821 printk( "scsi: <fdomain> TMC-3260 detect:"
822 " Using Vendor ID: 0x%x and Device ID: 0x%x\n",
823 PCI_VENDOR_ID_FD,
824 PCI_DEVICE_ID_FD_36C70 );
825 #endif
826
827 if ((pdev = pci_find_device(PCI_VENDOR_ID_FD,
828 PCI_DEVICE_ID_FD_36C70,
829 pdev)) == NULL)
830 return 0;
831
832 #if DEBUG_DETECT
833 printk( "scsi: <fdomain> TMC-3260 detect:"
834 " PCI bus %u, device %u, function %u\n",
835 pdev->bus->number,
836 PCI_SLOT(pdev->devfn),
837 PCI_FUNC(pdev->devfn));
838 #endif
839
840 /* We now have the appropriate device function for the FD board so we
841 just read the PCI config info from the registers. */
842
843 pci_base = pdev->resource[0].start;
844 pci_irq = pdev->irq;
845
846 /* Now we have the I/O base address and interrupt from the PCI
847 configuration registers. */
848
849 *irq = pci_irq;
850 *iobase = pci_base;
851
852 #if DEBUG_DETECT
853 printk( "scsi: <fdomain> TMC-3260 detect:"
854 " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base );
855 #endif
856
857 if (!fdomain_is_valid_port( *iobase )) {
858 printk( "scsi: <fdomain>"
859 " PCI card detected, but driver not loaded (invalid port)\n" );
860 return 0;
861 }
862
863 /* Fill in a few global variables. Ugh. */
864 bios_major = bios_minor = -1;
865 PCI_bus = 1;
866 Quantum = 0;
867 bios_base = 0;
868
869 return 1;
870 }
871 #endif
872
873 int fdomain_16x0_detect( Scsi_Host_Template *tpnt )
874 {
875 int retcode;
876 struct Scsi_Host *shpnt;
877 #if DO_DETECT
878 const int buflen = 255;
879 Scsi_Cmnd SCinit;
880 unsigned char do_inquiry[] = { INQUIRY, 0, 0, 0, buflen, 0 };
881 unsigned char do_request_sense[] = { REQUEST_SENSE, 0, 0, 0, buflen, 0 };
882 unsigned char do_read_capacity[] = { READ_CAPACITY,
883 0, 0, 0, 0, 0, 0, 0, 0, 0 };
884 unsigned char buf[buflen];
885 #endif
886
887 tpnt->proc_dir = &proc_scsi_fdomain;
888
889 #ifdef MODULE
890 if (fdomain[0] || fdomain[1] || fdomain[2]) {
891 port_base = fdomain[0];
892 interrupt_level = fdomain[1];
893 this_id = fdomain[2];
894 bios_major = bios_minor = -1;
895 ++setup_called;
896 }
897 #endif
898
899 if (setup_called) {
900 #if DEBUG_DETECT
901 printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n",
902 port_base, interrupt_level );
903 #endif
904 if (!fdomain_is_valid_port( port_base )) {
905 printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n",
906 port_base );
907 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
908 return 0;
909 }
910 } else {
911 int flag = 0;
912
913 #ifdef CONFIG_PCI
914 /* Try PCI detection first */
915 flag = fdomain_pci_bios_detect( &interrupt_level, &port_base );
916 #endif
917 if (!flag) {
918 /* Then try ISA bus detection */
919 flag = fdomain_isa_detect( &interrupt_level, &port_base );
920
921 if (!flag) {
922 printk( "scsi: <fdomain> Detection failed (no card)\n" );
923 return 0;
924 }
925 }
926 }
927
928 SCSI_Mode_Cntl_port = port_base + SCSI_Mode_Cntl;
929 FIFO_Data_Count_port = port_base + FIFO_Data_Count;
930 Interrupt_Cntl_port = port_base + Interrupt_Cntl;
931 Interrupt_Status_port = port_base + Interrupt_Status;
932 Read_FIFO_port = port_base + Read_FIFO;
933 Read_SCSI_Data_port = port_base + Read_SCSI_Data;
934 SCSI_Cntl_port = port_base + SCSI_Cntl;
935 SCSI_Data_NoACK_port = port_base + SCSI_Data_NoACK;
936 SCSI_Status_port = port_base + SCSI_Status;
937 TMC_Cntl_port = port_base + TMC_Cntl;
938 TMC_Status_port = port_base + TMC_Status;
939 Write_FIFO_port = port_base + Write_FIFO;
940 Write_SCSI_Data_port = port_base + Write_SCSI_Data;
941
942 fdomain_16x0_reset( NULL, 0 );
943
944 if (fdomain_test_loopback()) {
945 printk( "scsi: <fdomain> Detection failed"
946 " (loopback test failed at port base 0x%x)\n", port_base );
947 if (setup_called) {
948 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
949 }
950 return 0;
951 }
952
953 if (this_id) {
954 tpnt->this_id = (this_id & 0x07);
955 adapter_mask = (1 << tpnt->this_id);
956 } else {
957 if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) {
958 tpnt->this_id = 7;
959 adapter_mask = 0x80;
960 } else {
961 tpnt->this_id = 6;
962 adapter_mask = 0x40;
963 }
964 }
965
966 /* Print out a banner here in case we can't
967 get resources. */
968
969 shpnt = scsi_register( tpnt, 0 );
970 shpnt->irq = interrupt_level;
971 shpnt->io_port = port_base;
972 shpnt->n_io_port = 0x10;
973 print_banner( shpnt );
974
975 /* Log IRQ with kernel */
976 if (!interrupt_level) {
977 printk( "scsi: <fdomain>"
978 " Card Detected, but driver not loaded (no IRQ)\n" );
979 return 0;
980 } else {
981 /* Register the IRQ with the kernel */
982
983 retcode = request_irq( interrupt_level,
984 do_fdomain_16x0_intr, 0, "fdomain", NULL);
985
986 if (retcode < 0) {
987 if (retcode == -EINVAL) {
988 printk( "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level );
989 printk( " This shouldn't happen!\n" );
990 printk( " Send mail to faith@acm.org\n" );
991 } else if (retcode == -EBUSY) {
992 printk( "scsi: <fdomain> IRQ %d is already in use!\n",
993 interrupt_level );
994 printk( " Please use another IRQ!\n" );
995 } else {
996 printk( "scsi: <fdomain> Error getting IRQ %d\n",
997 interrupt_level );
998 printk( " This shouldn't happen!\n" );
999 printk( " Send mail to faith@acm.org\n" );
1000 }
1001 printk( "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" );
1002 return 0;
1003 }
1004 }
1005
1006 /* Log I/O ports with kernel */
1007 request_region( port_base, 0x10, "fdomain" );
1008
1009 #if DO_DETECT
1010
1011 /* These routines are here because of the way the SCSI bus behaves after
1012 a reset. This appropriate behavior was not handled correctly by the
1013 higher level SCSI routines when I first wrote this driver. Now,
1014 however, correct scan routines are part of scsi.c and these routines
1015 are no longer needed. However, this code is still good for
1016 debugging. */
1017
1018 SCinit.request_buffer = SCinit.buffer = buf;
1019 SCinit.request_bufflen = SCinit.bufflen = sizeof(buf)-1;
1020 SCinit.use_sg = 0;
1021 SCinit.lun = 0;
1022
1023 printk( "scsi: <fdomain> detection routine scanning for devices:\n" );
1024 for (i = 0; i < 8; i++) {
1025 SCinit.target = i;
1026 if (i == tpnt->this_id) /* Skip host adapter */
1027 continue;
1028 memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense));
1029 retcode = fdomain_16x0_command(&SCinit);
1030 if (!retcode) {
1031 memcpy(SCinit.cmnd, do_inquiry, sizeof(do_inquiry));
1032 retcode = fdomain_16x0_command(&SCinit);
1033 if (!retcode) {
1034 printk( " SCSI ID %d: ", i );
1035 for (j = 8; j < (buf[4] < 32 ? buf[4] : 32); j++)
1036 printk( "%c", buf[j] >= 20 ? buf[j] : ' ' );
1037 memcpy(SCinit.cmnd, do_read_capacity, sizeof(do_read_capacity));
1038 retcode = fdomain_16x0_command(&SCinit);
1039 if (!retcode) {
1040 unsigned long blocks, size, capacity;
1041
1042 blocks = (buf[0] << 24) | (buf[1] << 16)
1043 | (buf[2] << 8) | buf[3];
1044 size = (buf[4] << 24) | (buf[5] << 16) | (buf[6] << 8) | buf[7];
1045 capacity = +( +(blocks / 1024L) * +(size * 10L)) / 1024L;
1046
1047 printk( "%lu MB (%lu byte blocks)",
1048 ((capacity + 5L) / 10L), size );
1049 } else {
1050 memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense));
1051 retcode = fdomain_16x0_command(&SCinit);
1052 }
1053 printk ("\n" );
1054 } else {
1055 memcpy(SCinit.cmnd, do_request_sense, sizeof(do_request_sense));
1056 retcode = fdomain_16x0_command(&SCinit);
1057 }
1058 }
1059 }
1060 #endif
1061
1062 return 1; /* Maximum of one adapter will be detected. */
1063 }
1064
1065 const char *fdomain_16x0_info( struct Scsi_Host *ignore )
1066 {
1067 static char buffer[128];
1068 char *pt;
1069
1070 strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" );
1071 if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */
1072 strcat( buffer, strchr( VERSION, ':' ) + 1 );
1073 pt = strrchr( buffer, '$') - 1;
1074 if (!pt) /* Stripped RCS Revision string? */
1075 pt = buffer + strlen( buffer ) - 1;
1076 if (*pt != ' ')
1077 ++pt;
1078 *pt = '\0';
1079 } else { /* Assume VERSION is a number */
1080 strcat( buffer, " " VERSION );
1081 }
1082
1083 return buffer;
1084 }
1085
1086 /* First pass at /proc information routine. */
1087 /*
1088 * inout : decides on the direction of the dataflow and the meaning of the
1089 * variables
1090 * buffer: If inout==FALSE data is being written to it else read from it
1091 * *start: If inout==FALSE start of the valid data in the buffer
1092 * offset: If inout==FALSE offset from the beginning of the imaginary file
1093 * from which we start writing into the buffer
1094 * length: If inout==FALSE max number of bytes to be written into the buffer
1095 * else number of bytes in the buffer
1096 */
1097 int fdomain_16x0_proc_info( char *buffer, char **start, off_t offset,
1098 int length, int hostno, int inout )
1099 {
1100 const char *info = fdomain_16x0_info( NULL );
1101 int len;
1102 int pos;
1103 int begin;
1104
1105 if (inout) return(-ENOSYS);
1106
1107 begin = 0;
1108 strcpy( buffer, info );
1109 strcat( buffer, "\n" );
1110
1111 pos = len = strlen( buffer );
1112
1113 if(pos < offset) {
1114 len = 0;
1115 begin = pos;
1116 }
1117
1118 *start = buffer + (offset - begin); /* Start of wanted data */
1119 len -= (offset - begin);
1120 if(len > length) len = length;
1121
1122 return(len);
1123 }
1124
1125 #if 0
1126 static int fdomain_arbitrate( void )
1127 {
1128 int status = 0;
1129 unsigned long timeout;
1130
1131 #if EVERY_ACCESS
1132 printk( "fdomain_arbitrate()\n" );
1133 #endif
1134
1135 outb( 0x00, SCSI_Cntl_port ); /* Disable data drivers */
1136 outb( adapter_mask, port_base + SCSI_Data_NoACK ); /* Set our id bit */
1137 outb( 0x04 | PARITY_MASK, TMC_Cntl_port ); /* Start arbitration */
1138
1139 timeout = 500;
1140 do {
1141 status = inb( TMC_Status_port ); /* Read adapter status */
1142 if (status & 0x02) /* Arbitration complete */
1143 return 0;
1144 mdelay(1); /* Wait one millisecond */
1145 } while (--timeout);
1146
1147 /* Make bus idle */
1148 fdomain_make_bus_idle();
1149
1150 #if EVERY_ACCESS
1151 printk( "Arbitration failed, status = %x\n", status );
1152 #endif
1153 #if ERRORS_ONLY
1154 printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status );
1155 #endif
1156 return 1;
1157 }
1158 #endif
1159
1160 static int fdomain_select( int target )
1161 {
1162 int status;
1163 unsigned long timeout;
1164 static int flag = 0;
1165
1166
1167 outb( 0x82, SCSI_Cntl_port ); /* Bus Enable + Select */
1168 outb( adapter_mask | (1 << target), SCSI_Data_NoACK_port );
1169
1170 /* Stop arbitration and enable parity */
1171 outb( PARITY_MASK, TMC_Cntl_port );
1172
1173 timeout = 350; /* 350 msec */
1174
1175 do {
1176 status = inb( SCSI_Status_port ); /* Read adapter status */
1177 if (status & 1) { /* Busy asserted */
1178 /* Enable SCSI Bus (on error, should make bus idle with 0) */
1179 outb( 0x80, SCSI_Cntl_port );
1180 return 0;
1181 }
1182 mdelay(1); /* wait one msec */
1183 } while (--timeout);
1184 /* Make bus idle */
1185 fdomain_make_bus_idle();
1186 #if EVERY_ACCESS
1187 if (!target) printk( "Selection failed\n" );
1188 #endif
1189 #if ERRORS_ONLY
1190 if (!target) {
1191 if (!flag) /* Skip first failure for all chips. */
1192 ++flag;
1193 else
1194 printk( "scsi: <fdomain> Selection failed\n" );
1195 }
1196 #endif
1197 return 1;
1198 }
1199
1200 void my_done( int error )
1201 {
1202 if (in_command) {
1203 in_command = 0;
1204 outb( 0x00, Interrupt_Cntl_port );
1205 fdomain_make_bus_idle();
1206 current_SC->result = error;
1207 if (current_SC->scsi_done)
1208 current_SC->scsi_done( current_SC );
1209 else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" );
1210 } else {
1211 panic( "scsi: <fdomain> my_done() called outside of command\n" );
1212 }
1213 #if DEBUG_RACE
1214 in_interrupt_flag = 0;
1215 #endif
1216 }
1217
1218 void do_fdomain_16x0_intr( int irq, void *dev_id, struct pt_regs * regs )
1219 {
1220 unsigned long flags;
1221 int status;
1222 int done = 0;
1223 unsigned data_count;
1224
1225 /* The fdomain_16x0_intr is only called via
1226 the interrupt handler. The goal of the
1227 sti() here is to allow other
1228 interruptions while this routine is
1229 running. */
1230
1231 /* sti(); Yes, we really want sti() here if we want to lock up our machine */
1232
1233 outb( 0x00, Interrupt_Cntl_port );
1234
1235 /* We usually have one spurious interrupt after each command. Ignore it. */
1236 if (!in_command || !current_SC) { /* Spurious interrupt */
1237 #if EVERY_ACCESS
1238 printk( "Spurious interrupt, in_command = %d, current_SC = %x\n",
1239 in_command, current_SC );
1240 #endif
1241 return;
1242 }
1243
1244 /* Abort calls my_done, so we do nothing here. */
1245 if (current_SC->SCp.phase & aborted) {
1246 #if DEBUG_ABORT
1247 printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" );
1248 #endif
1249 /*
1250 return; */
1251 }
1252
1253 #if DEBUG_RACE
1254 ++in_interrupt_flag;
1255 #endif
1256
1257 if (current_SC->SCp.phase & in_arbitration) {
1258 status = inb( TMC_Status_port ); /* Read adapter status */
1259 if (!(status & 0x02)) {
1260 #if EVERY_ACCESS
1261 printk( " AFAIL " );
1262 #endif
1263 spin_lock_irqsave(&io_request_lock, flags);
1264 my_done( DID_BUS_BUSY << 16 );
1265 spin_unlock_irqrestore(&io_request_lock, flags);
1266 return;
1267 }
1268 current_SC->SCp.phase = in_selection;
1269
1270 outb( 0x40 | FIFO_COUNT, Interrupt_Cntl_port );
1271
1272 outb( 0x82, SCSI_Cntl_port ); /* Bus Enable + Select */
1273 outb( adapter_mask | (1 << current_SC->target), SCSI_Data_NoACK_port );
1274
1275 /* Stop arbitration and enable parity */
1276 outb( 0x10 | PARITY_MASK, TMC_Cntl_port );
1277 #if DEBUG_RACE
1278 in_interrupt_flag = 0;
1279 #endif
1280 return;
1281 } else if (current_SC->SCp.phase & in_selection) {
1282 status = inb( SCSI_Status_port );
1283 if (!(status & 0x01)) {
1284 /* Try again, for slow devices */
1285 if (fdomain_select( current_SC->target )) {
1286 #if EVERY_ACCESS
1287 printk( " SFAIL " );
1288 #endif
1289 spin_lock_irqsave(&io_request_lock, flags);
1290 my_done( DID_NO_CONNECT << 16 );
1291 spin_unlock_irqrestore(&io_request_lock, flags);
1292 return;
1293 } else {
1294 #if EVERY_ACCESS
1295 printk( " AltSel " );
1296 #endif
1297 /* Stop arbitration and enable parity */
1298 outb( 0x10 | PARITY_MASK, TMC_Cntl_port );
1299 }
1300 }
1301 current_SC->SCp.phase = in_other;
1302 outb( 0x90 | FIFO_COUNT, Interrupt_Cntl_port );
1303 outb( 0x80, SCSI_Cntl_port );
1304 #if DEBUG_RACE
1305 in_interrupt_flag = 0;
1306 #endif
1307 return;
1308 }
1309
1310 /* current_SC->SCp.phase == in_other: this is the body of the routine */
1311
1312 status = inb( SCSI_Status_port );
1313
1314 if (status & 0x10) { /* REQ */
1315
1316 switch (status & 0x0e) {
1317
1318 case 0x08: /* COMMAND OUT */
1319 outb( current_SC->cmnd[current_SC->SCp.sent_command++],
1320 Write_SCSI_Data_port );
1321 #if EVERY_ACCESS
1322 printk( "CMD = %x,",
1323 current_SC->cmnd[ current_SC->SCp.sent_command - 1] );
1324 #endif
1325 break;
1326 case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
1327 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
1328 current_SC->SCp.have_data_in = -1;
1329 outb( 0xd0 | PARITY_MASK, TMC_Cntl_port );
1330 }
1331 break;
1332 case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
1333 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
1334 current_SC->SCp.have_data_in = 1;
1335 outb( 0x90 | PARITY_MASK, TMC_Cntl_port );
1336 }
1337 break;
1338 case 0x0c: /* STATUS IN */
1339 current_SC->SCp.Status = inb( Read_SCSI_Data_port );
1340 #if EVERY_ACCESS
1341 printk( "Status = %x, ", current_SC->SCp.Status );
1342 #endif
1343 #if ERRORS_ONLY
1344 if (current_SC->SCp.Status
1345 && current_SC->SCp.Status != 2
1346 && current_SC->SCp.Status != 8) {
1347 printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n",
1348 current_SC->target,
1349 current_SC->cmnd[0],
1350 current_SC->SCp.Status );
1351 }
1352 #endif
1353 break;
1354 case 0x0a: /* MESSAGE OUT */
1355 outb( MESSAGE_REJECT, Write_SCSI_Data_port ); /* Reject */
1356 break;
1357 case 0x0e: /* MESSAGE IN */
1358 current_SC->SCp.Message = inb( Read_SCSI_Data_port );
1359 #if EVERY_ACCESS
1360 printk( "Message = %x, ", current_SC->SCp.Message );
1361 #endif
1362 if (!current_SC->SCp.Message) ++done;
1363 #if DEBUG_MESSAGES || EVERY_ACCESS
1364 if (current_SC->SCp.Message) {
1365 printk( "scsi: <fdomain> message = %x\n",
1366 current_SC->SCp.Message );
1367 }
1368 #endif
1369 break;
1370 }
1371 }
1372
1373 if (chip == tmc1800
1374 && !current_SC->SCp.have_data_in
1375 && (current_SC->SCp.sent_command
1376 >= current_SC->cmd_len)) {
1377 /* We have to get the FIFO direction
1378 correct, so I've made a table based
1379 on the SCSI Standard of which commands
1380 appear to require a DATA OUT phase.
1381 */
1382 /*
1383 p. 94: Command for all device types
1384 CHANGE DEFINITION 40 DATA OUT
1385 COMPARE 39 DATA OUT
1386 COPY 18 DATA OUT
1387 COPY AND VERIFY 3a DATA OUT
1388 INQUIRY 12
1389 LOG SELECT 4c DATA OUT
1390 LOG SENSE 4d
1391 MODE SELECT (6) 15 DATA OUT
1392 MODE SELECT (10) 55 DATA OUT
1393 MODE SENSE (6) 1a
1394 MODE SENSE (10) 5a
1395 READ BUFFER 3c
1396 RECEIVE DIAGNOSTIC RESULTS 1c
1397 REQUEST SENSE 03
1398 SEND DIAGNOSTIC 1d DATA OUT
1399 TEST UNIT READY 00
1400 WRITE BUFFER 3b DATA OUT
1401
1402 p.178: Commands for direct-access devices (not listed on p. 94)
1403 FORMAT UNIT 04 DATA OUT
1404 LOCK-UNLOCK CACHE 36
1405 PRE-FETCH 34
1406 PREVENT-ALLOW MEDIUM REMOVAL 1e
1407 READ (6)/RECEIVE 08
1408 READ (10) 3c
1409 READ CAPACITY 25
1410 READ DEFECT DATA (10) 37
1411 READ LONG 3e
1412 REASSIGN BLOCKS 07 DATA OUT
1413 RELEASE 17
1414 RESERVE 16 DATA OUT
1415 REZERO UNIT/REWIND 01
1416 SEARCH DATA EQUAL (10) 31 DATA OUT
1417 SEARCH DATA HIGH (10) 30 DATA OUT
1418 SEARCH DATA LOW (10) 32 DATA OUT
1419 SEEK (6) 0b
1420 SEEK (10) 2b
1421 SET LIMITS (10) 33
1422 START STOP UNIT 1b
1423 SYNCHRONIZE CACHE 35
1424 VERIFY (10) 2f
1425 WRITE (6)/PRINT/SEND 0a DATA OUT
1426 WRITE (10)/SEND 2a DATA OUT
1427 WRITE AND VERIFY (10) 2e DATA OUT
1428 WRITE LONG 3f DATA OUT
1429 WRITE SAME 41 DATA OUT ?
1430
1431 p. 261: Commands for sequential-access devices (not previously listed)
1432 ERASE 19
1433 LOAD UNLOAD 1b
1434 LOCATE 2b
1435 READ BLOCK LIMITS 05
1436 READ POSITION 34
1437 READ REVERSE 0f
1438 RECOVER BUFFERED DATA 14
1439 SPACE 11
1440 WRITE FILEMARKS 10 ?
1441
1442 p. 298: Commands for printer devices (not previously listed)
1443 ****** NOT SUPPORTED BY THIS DRIVER, since 0b is SEEK (6) *****
1444 SLEW AND PRINT 0b DATA OUT -- same as seek
1445 STOP PRINT 1b
1446 SYNCHRONIZE BUFFER 10
1447
1448 p. 315: Commands for processor devices (not previously listed)
1449
1450 p. 321: Commands for write-once devices (not previously listed)
1451 MEDIUM SCAN 38
1452 READ (12) a8
1453 SEARCH DATA EQUAL (12) b1 DATA OUT
1454 SEARCH DATA HIGH (12) b0 DATA OUT
1455 SEARCH DATA LOW (12) b2 DATA OUT
1456 SET LIMITS (12) b3
1457 VERIFY (12) af
1458 WRITE (12) aa DATA OUT
1459 WRITE AND VERIFY (12) ae DATA OUT
1460
1461 p. 332: Commands for CD-ROM devices (not previously listed)
1462 PAUSE/RESUME 4b
1463 PLAY AUDIO (10) 45
1464 PLAY AUDIO (12) a5
1465 PLAY AUDIO MSF 47
1466 PLAY TRACK RELATIVE (10) 49
1467 PLAY TRACK RELATIVE (12) a9
1468 READ HEADER 44
1469 READ SUB-CHANNEL 42
1470 READ TOC 43
1471
1472 p. 370: Commands for scanner devices (not previously listed)
1473 GET DATA BUFFER STATUS 34
1474 GET WINDOW 25
1475 OBJECT POSITION 31
1476 SCAN 1b
1477 SET WINDOW 24 DATA OUT
1478
1479 p. 391: Commands for optical memory devices (not listed)
1480 ERASE (10) 2c
1481 ERASE (12) ac
1482 MEDIUM SCAN 38 DATA OUT
1483 READ DEFECT DATA (12) b7
1484 READ GENERATION 29
1485 READ UPDATED BLOCK 2d
1486 UPDATE BLOCK 3d DATA OUT
1487
1488 p. 419: Commands for medium changer devices (not listed)
1489 EXCHANGE MEDIUM 46
1490 INITIALIZE ELEMENT STATUS 07
1491 MOVE MEDIUM a5
1492 POSITION TO ELEMENT 2b
1493 READ ELEMENT STATUS b8
1494 REQUEST VOL. ELEMENT ADDRESS b5
1495 SEND VOLUME TAG b6 DATA OUT
1496
1497 p. 454: Commands for communications devices (not listed previously)
1498 GET MESSAGE (6) 08
1499 GET MESSAGE (10) 28
1500 GET MESSAGE (12) a8
1501 */
1502
1503 switch (current_SC->cmnd[0]) {
1504 case CHANGE_DEFINITION: case COMPARE: case COPY:
1505 case COPY_VERIFY: case LOG_SELECT: case MODE_SELECT:
1506 case MODE_SELECT_10: case SEND_DIAGNOSTIC: case WRITE_BUFFER:
1507
1508 case FORMAT_UNIT: case REASSIGN_BLOCKS: case RESERVE:
1509 case SEARCH_EQUAL: case SEARCH_HIGH: case SEARCH_LOW:
1510 case WRITE_6: case WRITE_10: case WRITE_VERIFY:
1511 case 0x3f: case 0x41:
1512
1513 case 0xb1: case 0xb0: case 0xb2:
1514 case 0xaa: case 0xae:
1515
1516 case 0x24:
1517
1518 case 0x38: case 0x3d:
1519
1520 case 0xb6:
1521
1522 case 0xea: /* alternate number for WRITE LONG */
1523
1524 current_SC->SCp.have_data_in = -1;
1525 outb( 0xd0 | PARITY_MASK, TMC_Cntl_port );
1526 break;
1527
1528 case 0x00:
1529 default:
1530
1531 current_SC->SCp.have_data_in = 1;
1532 outb( 0x90 | PARITY_MASK, TMC_Cntl_port );
1533 break;
1534 }
1535 }
1536
1537 if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
1538 while ( (data_count = FIFO_Size - inw( FIFO_Data_Count_port )) > 512 ) {
1539 #if EVERY_ACCESS
1540 printk( "DC=%d, ", data_count ) ;
1541 #endif
1542 if (data_count > current_SC->SCp.this_residual)
1543 data_count = current_SC->SCp.this_residual;
1544 if (data_count > 0) {
1545 #if EVERY_ACCESS
1546 printk( "%d OUT, ", data_count );
1547 #endif
1548 if (data_count == 1) {
1549 outb( *current_SC->SCp.ptr++, Write_FIFO_port );
1550 --current_SC->SCp.this_residual;
1551 } else {
1552 data_count >>= 1;
1553 outsw( Write_FIFO_port, current_SC->SCp.ptr, data_count );
1554 current_SC->SCp.ptr += 2 * data_count;
1555 current_SC->SCp.this_residual -= 2 * data_count;
1556 }
1557 }
1558 if (!current_SC->SCp.this_residual) {
1559 if (current_SC->SCp.buffers_residual) {
1560 --current_SC->SCp.buffers_residual;
1561 ++current_SC->SCp.buffer;
1562 current_SC->SCp.ptr = current_SC->SCp.buffer->address;
1563 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1564 } else
1565 break;
1566 }
1567 }
1568 }
1569
1570 if (current_SC->SCp.have_data_in == 1) { /* DATA IN */
1571 while ((data_count = inw( FIFO_Data_Count_port )) > 0) {
1572 #if EVERY_ACCESS
1573 printk( "DC=%d, ", data_count );
1574 #endif
1575 if (data_count > current_SC->SCp.this_residual)
1576 data_count = current_SC->SCp.this_residual;
1577 if (data_count) {
1578 #if EVERY_ACCESS
1579 printk( "%d IN, ", data_count );
1580 #endif
1581 if (data_count == 1) {
1582 *current_SC->SCp.ptr++ = inb( Read_FIFO_port );
1583 --current_SC->SCp.this_residual;
1584 } else {
1585 data_count >>= 1; /* Number of words */
1586 insw( Read_FIFO_port, current_SC->SCp.ptr, data_count );
1587 current_SC->SCp.ptr += 2 * data_count;
1588 current_SC->SCp.this_residual -= 2 * data_count;
1589 }
1590 }
1591 if (!current_SC->SCp.this_residual
1592 && current_SC->SCp.buffers_residual) {
1593 --current_SC->SCp.buffers_residual;
1594 ++current_SC->SCp.buffer;
1595 current_SC->SCp.ptr = current_SC->SCp.buffer->address;
1596 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1597 }
1598 }
1599 }
1600
1601 if (done) {
1602 #if EVERY_ACCESS
1603 printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in );
1604 #endif
1605
1606 #if ERRORS_ONLY
1607 if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) {
1608 if ((unsigned char)(*((char *)current_SC->request_buffer+2)) & 0x0f) {
1609 unsigned char key;
1610 unsigned char code;
1611 unsigned char qualifier;
1612
1613 key = (unsigned char)(*((char *)current_SC->request_buffer + 2))
1614 & 0x0f;
1615 code = (unsigned char)(*((char *)current_SC->request_buffer + 12));
1616 qualifier = (unsigned char)(*((char *)current_SC->request_buffer
1617 + 13));
1618
1619 if (key != UNIT_ATTENTION
1620 && !(key == NOT_READY
1621 && code == 0x04
1622 && (!qualifier || qualifier == 0x02 || qualifier == 0x01))
1623 && !(key == ILLEGAL_REQUEST && (code == 0x25
1624 || code == 0x24
1625 || !code)))
1626
1627 printk( "scsi: <fdomain> REQUEST SENSE"
1628 " Key = %x, Code = %x, Qualifier = %x\n",
1629 key, code, qualifier );
1630 }
1631 }
1632 #endif
1633 #if EVERY_ACCESS
1634 printk( "BEFORE MY_DONE. . ." );
1635 #endif
1636 spin_lock_irqsave(&io_request_lock, flags);
1637 my_done( (current_SC->SCp.Status & 0xff)
1638 | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) );
1639 spin_unlock_irqrestore(&io_request_lock, flags);
1640 #if EVERY_ACCESS
1641 printk( "RETURNING.\n" );
1642 #endif
1643
1644 } else {
1645 if (current_SC->SCp.phase & disconnect) {
1646 outb( 0xd0 | FIFO_COUNT, Interrupt_Cntl_port );
1647 outb( 0x00, SCSI_Cntl_port );
1648 } else {
1649 outb( 0x90 | FIFO_COUNT, Interrupt_Cntl_port );
1650 }
1651 }
1652 #if DEBUG_RACE
1653 in_interrupt_flag = 0;
1654 #endif
1655 return;
1656 }
1657
1658 int fdomain_16x0_queue( Scsi_Cmnd * SCpnt, void (*done)(Scsi_Cmnd *))
1659 {
1660 if (in_command) {
1661 panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" );
1662 }
1663 #if EVERY_ACCESS
1664 printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1665 SCpnt->target,
1666 *(unsigned char *)SCpnt->cmnd,
1667 SCpnt->use_sg,
1668 SCpnt->request_bufflen );
1669 #endif
1670
1671 fdomain_make_bus_idle();
1672
1673 current_SC = SCpnt; /* Save this for the done function */
1674 current_SC->scsi_done = done;
1675
1676 /* Initialize static data */
1677
1678 if (current_SC->use_sg) {
1679 current_SC->SCp.buffer =
1680 (struct scatterlist *)current_SC->request_buffer;
1681 current_SC->SCp.ptr = current_SC->SCp.buffer->address;
1682 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1683 current_SC->SCp.buffers_residual = current_SC->use_sg - 1;
1684 } else {
1685 current_SC->SCp.ptr = (char *)current_SC->request_buffer;
1686 current_SC->SCp.this_residual = current_SC->request_bufflen;
1687 current_SC->SCp.buffer = NULL;
1688 current_SC->SCp.buffers_residual = 0;
1689 }
1690
1691
1692 current_SC->SCp.Status = 0;
1693 current_SC->SCp.Message = 0;
1694 current_SC->SCp.have_data_in = 0;
1695 current_SC->SCp.sent_command = 0;
1696 current_SC->SCp.phase = in_arbitration;
1697
1698 /* Start arbitration */
1699 outb( 0x00, Interrupt_Cntl_port );
1700 outb( 0x00, SCSI_Cntl_port ); /* Disable data drivers */
1701 outb( adapter_mask, SCSI_Data_NoACK_port ); /* Set our id bit */
1702 ++in_command;
1703 outb( 0x20, Interrupt_Cntl_port );
1704 outb( 0x14 | PARITY_MASK, TMC_Cntl_port ); /* Start arbitration */
1705
1706 return 0;
1707 }
1708
1709 /* The following code, which simulates the old-style command function, was
1710 taken from Tommy Thorn's aha1542.c file. This code is Copyright (C)
1711 1992 Tommy Thorn. */
1712
1713 static volatile int internal_done_flag = 0;
1714 static volatile int internal_done_errcode = 0;
1715
1716 static void internal_done( Scsi_Cmnd *SCpnt )
1717 {
1718 internal_done_errcode = SCpnt->result;
1719 ++internal_done_flag;
1720 }
1721
1722 int fdomain_16x0_command( Scsi_Cmnd *SCpnt )
1723 {
1724 fdomain_16x0_queue( SCpnt, internal_done );
1725
1726 while (!internal_done_flag)
1727 ;
1728 internal_done_flag = 0;
1729 return internal_done_errcode;
1730 }
1731
1732 /* End of code derived from Tommy Thorn's work. */
1733
1734 void print_info( Scsi_Cmnd *SCpnt )
1735 {
1736 unsigned int imr;
1737 unsigned int irr;
1738 unsigned int isr;
1739
1740 if (!SCpnt || !SCpnt->host) {
1741 printk( "scsi: <fdomain> Cannot provide detailed information\n" );
1742 return;
1743 }
1744
1745 printk( "%s\n", fdomain_16x0_info( SCpnt->host ) );
1746 print_banner( SCpnt->host );
1747 switch (SCpnt->SCp.phase) {
1748 case in_arbitration: printk( "arbitration " ); break;
1749 case in_selection: printk( "selection " ); break;
1750 case in_other: printk( "other " ); break;
1751 default: printk( "unknown " ); break;
1752 }
1753
1754 printk( "(%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1755 SCpnt->SCp.phase,
1756 SCpnt->target,
1757 *(unsigned char *)SCpnt->cmnd,
1758 SCpnt->use_sg,
1759 SCpnt->request_bufflen );
1760 printk( "sent_command = %d, have_data_in = %d, timeout = %d\n",
1761 SCpnt->SCp.sent_command,
1762 SCpnt->SCp.have_data_in,
1763 SCpnt->timeout );
1764 #if DEBUG_RACE
1765 printk( "in_interrupt_flag = %d\n", in_interrupt_flag );
1766 #endif
1767
1768 imr = (inb( 0x0a1 ) << 8) + inb( 0x21 );
1769 outb( 0x0a, 0xa0 );
1770 irr = inb( 0xa0 ) << 8;
1771 outb( 0x0a, 0x20 );
1772 irr += inb( 0x20 );
1773 outb( 0x0b, 0xa0 );
1774 isr = inb( 0xa0 ) << 8;
1775 outb( 0x0b, 0x20 );
1776 isr += inb( 0x20 );
1777
1778 /* Print out interesting information */
1779 printk( "IMR = 0x%04x", imr );
1780 if (imr & (1 << interrupt_level))
1781 printk( " (masked)" );
1782 printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr );
1783
1784 printk( "SCSI Status = 0x%02x\n", inb( SCSI_Status_port ) );
1785 printk( "TMC Status = 0x%02x", inb( TMC_Status_port ) );
1786 if (inb( TMC_Status_port & 1))
1787 printk( " (interrupt)" );
1788 printk( "\n" );
1789 printk( "Interrupt Status = 0x%02x", inb( Interrupt_Status_port ) );
1790 if (inb( Interrupt_Status_port ) & 0x08)
1791 printk( " (enabled)" );
1792 printk( "\n" );
1793 if (chip == tmc18c50 || chip == tmc18c30) {
1794 printk( "FIFO Status = 0x%02x\n", inb( port_base + FIFO_Status ) );
1795 printk( "Int. Condition = 0x%02x\n",
1796 inb( port_base + Interrupt_Cond ) );
1797 }
1798 printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) );
1799 if (chip == tmc18c50 || chip == tmc18c30)
1800 printk( "Configuration 2 = 0x%02x\n",
1801 inb( port_base + Configuration2 ) );
1802 }
1803
1804 int fdomain_16x0_abort( Scsi_Cmnd *SCpnt)
1805 {
1806 unsigned long flags;
1807 #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
1808 printk( "scsi: <fdomain> abort " );
1809 #endif
1810
1811 save_flags( flags );
1812 cli();
1813 if (!in_command) {
1814 #if EVERY_ACCESS || ERRORS_ONLY
1815 printk( " (not in command)\n" );
1816 #endif
1817 restore_flags( flags );
1818 return SCSI_ABORT_NOT_RUNNING;
1819 } else printk( "\n" );
1820
1821 #if DEBUG_ABORT
1822 print_info( SCpnt );
1823 #endif
1824
1825 fdomain_make_bus_idle();
1826
1827 current_SC->SCp.phase |= aborted;
1828
1829 current_SC->result = DID_ABORT << 16;
1830
1831 restore_flags( flags );
1832
1833 /* Aborts are not done well. . . */
1834 my_done( DID_ABORT << 16 );
1835
1836 return SCSI_ABORT_SUCCESS;
1837 }
1838
1839 int fdomain_16x0_reset( Scsi_Cmnd *SCpnt, unsigned int ignored )
1840 {
1841 #if DEBUG_RESET
1842 static int called_once = 0;
1843 #endif
1844
1845 #if ERRORS_ONLY
1846 if (SCpnt) printk( "scsi: <fdomain> SCSI Bus Reset\n" );
1847 #endif
1848
1849 #if DEBUG_RESET
1850 if (called_once) print_info( current_SC );
1851 called_once = 1;
1852 #endif
1853
1854 outb( 1, SCSI_Cntl_port );
1855 do_pause( 2 );
1856 outb( 0, SCSI_Cntl_port );
1857 do_pause( 115 );
1858 outb( 0, SCSI_Mode_Cntl_port );
1859 outb( PARITY_MASK, TMC_Cntl_port );
1860
1861 /* Unless this is the very first call (i.e., SCPnt == NULL), everything
1862 is probably hosed at this point. We will, however, try to keep
1863 things going by informing the high-level code that we need help. */
1864
1865 return SCSI_RESET_WAKEUP;
1866 }
1867
1868 #include "sd.h"
1869 #include <scsi/scsi_ioctl.h>
1870
1871 int fdomain_16x0_biosparam( Scsi_Disk *disk, kdev_t dev, int *info_array )
1872 {
1873 int drive;
1874 unsigned char buf[512 + sizeof (Scsi_Ioctl_Command)];
1875 Scsi_Ioctl_Command *sic = (Scsi_Ioctl_Command *) buf;
1876 int size = disk->capacity;
1877 unsigned char *data = sic->data;
1878 unsigned char do_read[] = { READ_6, 0, 0, 0, 1, 0 };
1879 int retcode;
1880 unsigned long offset;
1881 struct drive_info {
1882 unsigned short cylinders;
1883 unsigned char heads;
1884 unsigned char sectors;
1885 } i;
1886
1887 /* NOTES:
1888 The RAM area starts at 0x1f00 from the bios_base address.
1889
1890 For BIOS Version 2.0:
1891
1892 The drive parameter table seems to start at 0x1f30.
1893 The first byte's purpose is not known.
1894 Next is the cylinder, head, and sector information.
1895 The last 4 bytes appear to be the drive's size in sectors.
1896 The other bytes in the drive parameter table are unknown.
1897 If anyone figures them out, please send me mail, and I will
1898 update these notes.
1899
1900 Tape drives do not get placed in this table.
1901
1902 There is another table at 0x1fea:
1903 If the byte is 0x01, then the SCSI ID is not in use.
1904 If the byte is 0x18 or 0x48, then the SCSI ID is in use,
1905 although tapes don't seem to be in this table. I haven't
1906 seen any other numbers (in a limited sample).
1907
1908 0x1f2d is a drive count (i.e., not including tapes)
1909
1910 The table at 0x1fcc are I/O ports addresses for the various
1911 operations. I calculate these by hand in this driver code.
1912
1913
1914
1915 For the ISA-200S version of BIOS Version 2.0:
1916
1917 The drive parameter table starts at 0x1f33.
1918
1919 WARNING: Assume that the table entry is 25 bytes long. Someone needs
1920 to check this for the Quantum ISA-200S card.
1921
1922
1923
1924 For BIOS Version 3.2:
1925
1926 The drive parameter table starts at 0x1f70. Each entry is
1927 0x0a bytes long. Heads are one less than we need to report.
1928 */
1929
1930 if (MAJOR(dev) != SCSI_DISK0_MAJOR) {
1931 printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks");
1932 return 0;
1933 }
1934 drive = MINOR(dev) >> 4;
1935
1936 if (bios_major == 2) {
1937 switch (Quantum) {
1938 case 2: /* ISA_200S */
1939 /* The value of 25 has never been verified.
1940 It should probably be 15. */
1941 offset = bios_base + 0x1f33 + drive * 25;
1942 break;
1943 case 3: /* ISA_250MG */
1944 offset = bios_base + 0x1f36 + drive * 15;
1945 break;
1946 case 4: /* ISA_200S (another one) */
1947 offset = bios_base + 0x1f34 + drive * 15;
1948 break;
1949 default:
1950 offset = bios_base + 0x1f31 + drive * 25;
1951 break;
1952 }
1953 memcpy_fromio( &i, offset, sizeof( struct drive_info ) );
1954 info_array[0] = i.heads;
1955 info_array[1] = i.sectors;
1956 info_array[2] = i.cylinders;
1957 } else if (bios_major == 3
1958 && bios_minor >= 0
1959 && bios_minor < 4) { /* 3.0 and 3.2 BIOS */
1960 memcpy_fromio( &i, bios_base + 0x1f71 + drive * 10,
1961 sizeof( struct drive_info ) );
1962 info_array[0] = i.heads + 1;
1963 info_array[1] = i.sectors;
1964 info_array[2] = i.cylinders;
1965 } else { /* 3.4 BIOS (and up?) */
1966 /* This algorithm was provided by Future Domain (much thanks!). */
1967
1968 sic->inlen = 0; /* zero bytes out */
1969 sic->outlen = 512; /* one sector in */
1970 memcpy( data, do_read, sizeof( do_read ) );
1971 retcode = kernel_scsi_ioctl( disk->device,
1972 SCSI_IOCTL_SEND_COMMAND,
1973 sic );
1974 if (!retcode /* SCSI command ok */
1975 && data[511] == 0xaa && data[510] == 0x55 /* Partition table valid */
1976 && data[0x1c2]) { /* Partition type */
1977
1978 /* The partition table layout is as follows:
1979
1980 Start: 0x1b3h
1981 Offset: 0 = partition status
1982 1 = starting head
1983 2 = starting sector and cylinder (word, encoded)
1984 4 = partition type
1985 5 = ending head
1986 6 = ending sector and cylinder (word, encoded)
1987 8 = starting absolute sector (double word)
1988 c = number of sectors (double word)
1989 Signature: 0x1fe = 0x55aa
1990
1991 So, this algorithm assumes:
1992 1) the first partition table is in use,
1993 2) the data in the first entry is correct, and
1994 3) partitions never divide cylinders
1995
1996 Note that (1) may be FALSE for NetBSD (and other BSD flavors),
1997 as well as for Linux. Note also, that Linux doesn't pay any
1998 attention to the fields that are used by this algorithm -- it
1999 only uses the absolute sector data. Recent versions of Linux's
2000 fdisk(1) will fill this data in correctly, and forthcoming
2001 versions will check for consistency.
2002
2003 Checking for a non-zero partition type is not part of the
2004 Future Domain algorithm, but it seemed to be a reasonable thing
2005 to do, especially in the Linux and BSD worlds. */
2006
2007 info_array[0] = data[0x1c3] + 1; /* heads */
2008 info_array[1] = data[0x1c4] & 0x3f; /* sectors */
2009 } else {
2010
2011 /* Note that this new method guarantees that there will always be
2012 less than 1024 cylinders on a platter. This is good for drives
2013 up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
2014
2015 if ((unsigned int)size >= 0x7e0000U) {
2016 info_array[0] = 0xff; /* heads = 255 */
2017 info_array[1] = 0x3f; /* sectors = 63 */
2018 } else if ((unsigned int)size >= 0x200000U) {
2019 info_array[0] = 0x80; /* heads = 128 */
2020 info_array[1] = 0x3f; /* sectors = 63 */
2021 } else {
2022 info_array[0] = 0x40; /* heads = 64 */
2023 info_array[1] = 0x20; /* sectors = 32 */
2024 }
2025 }
2026 /* For both methods, compute the cylinders */
2027 info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] );
2028 }
2029
2030 return 0;
2031 }
2032
2033 #ifdef MODULE
2034 /* Eventually this will go into an include file, but this will be later */
2035 Scsi_Host_Template driver_template = FDOMAIN_16X0;
2036
2037 #include "scsi_module.c"
2038 #endif
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