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1da177e4
LT		 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 * Shared IRQ supported added 7/7/2001 Alan Cox <alan@redhat.com>
7
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License as published by the
10 * Free Software Foundation; either version 2, or (at your option) any
11 * later version.
12
13 * This program is distributed in the hope that it will be useful, but
14 * WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17
18 * You should have received a copy of the GNU General Public License along
19 * with this program; if not, write to the Free Software Foundation, Inc.,
20 * 675 Mass Ave, Cambridge, MA 02139, USA.
21
22 **************************************************************************
23
24 SUMMARY:
25
26 Future Domain BIOS versions supported for autodetect:
27 2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61
28 Chips are supported:
29 TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70
30 Boards supported:
31 Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX
32 Future Domain TMC-3260 (PCI)
33 Quantum ISA-200S, ISA-250MG
34 Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead]
35 IBM ?
36 LILO/INSMOD command-line options:
37 fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]
38
39
40
41 NOTE:
42
43 The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it.
44 Use the aic7xxx driver for this board.
45
46 The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right
47 driver for that card. Unfortunately, the boxes will probably just say
48 "2920", so you'll have to look on the card for a Future Domain logo, or a
49 letter after the 2920.
50
51
52
53 THANKS:
54
55 Thanks to Adaptec for providing PCI boards for testing. This finally
56 enabled me to test the PCI detection and correct it for PCI boards that do
57 not have a BIOS at a standard ISA location. For PCI boards, LILO/INSMOD
58 command-line options should no longer be needed. --RF 18Nov98
59
60
61
62 DESCRIPTION:
63
64 This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680
65 TMC-1650/1670, and TMC-3260 SCSI host adapters. The 1650 and 1670 have a
66 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin
67 high-density external connector. The 1670 and 1680 have floppy disk
68 controllers built in. The TMC-3260 is a PCI bus card.
69
70 Future Domain's older boards are based on the TMC-1800 chip, and this
71 driver was originally written for a TMC-1680 board with the TMC-1800 chip.
72 More recently, boards are being produced with the TMC-18C50 and TMC-18C30
73 chips. The latest and greatest board may not work with this driver. If
74 you have to patch this driver so that it will recognize your board's BIOS
75 signature, then the driver may fail to function after the board is
76 detected.
77
78 Please note that the drive ordering that Future Domain implemented in BIOS
79 versions 3.4 and 3.5 is the opposite of the order (currently) used by the
80 rest of the SCSI industry. If you have BIOS version 3.4 or 3.5, and have
81 more than one drive, then the drive ordering will be the reverse of that
82 which you see under DOS. For example, under DOS SCSI ID 0 will be D: and
83 SCSI ID 1 will be C: (the boot device). Under Linux, SCSI ID 0 will be
84 /dev/sda and SCSI ID 1 will be /dev/sdb. The Linux ordering is consistent
85 with that provided by all the other SCSI drivers for Linux. If you want
86 this changed, you will probably have to patch the higher level SCSI code.
87 If you do so, please send me patches that are protected by #ifdefs.
88
89 If you have a TMC-8xx or TMC-9xx board, then this is not the driver for
90 your board. Please refer to the Seagate driver for more information and
91 possible support.
92
93
94
95 HISTORY:
96
97 Linux Driver Driver
98 Version Version Date Support/Notes
99
100 0.0 3 May 1992 V2.0 BIOS; 1800 chip
101 0.97 1.9 28 Jul 1992
102 0.98.6 3.1 27 Nov 1992
103 0.99 3.2 9 Dec 1992
104
105 0.99.3 3.3 10 Jan 1993 V3.0 BIOS
106 0.99.5 3.5 18 Feb 1993
107 0.99.10 3.6 15 May 1993 V3.2 BIOS; 18C50 chip
108 0.99.11 3.17 3 Jul 1993 (now under RCS)
109 0.99.12 3.18 13 Aug 1993
110 0.99.14 5.6 31 Oct 1993 (reselection code removed)
111
112 0.99.15 5.9 23 Jan 1994 V3.4 BIOS (preliminary)
113 1.0.8/1.1.1 5.15 1 Apr 1994 V3.4 BIOS; 18C30 chip (preliminary)
114 1.0.9/1.1.3 5.16 7 Apr 1994 V3.4 BIOS; 18C30 chip
115 1.1.38 5.18 30 Jul 1994 36C70 chip (PCI version of 18C30)
116 1.1.62 5.20 2 Nov 1994 V3.5 BIOS
117 1.1.73 5.22 7 Dec 1994 Quantum ISA-200S board; V2.0 BIOS
118
119 1.1.82 5.26 14 Jan 1995 V3.5 BIOS; TMC-1610M/MER/MEX board
120 1.2.10 5.28 5 Jun 1995 Quantum ISA-250MG board; V2.0, V2.01 BIOS
121 1.3.4 5.31 23 Jun 1995 PCI BIOS-32 detection (preliminary)
122 1.3.7 5.33 4 Jul 1995 PCI BIOS-32 detection
123 1.3.28 5.36 17 Sep 1995 V3.61 BIOS; LILO command-line support
124 1.3.34 5.39 12 Oct 1995 V3.60 BIOS; /proc
125 1.3.72 5.39 8 Feb 1996 Adaptec AHA-2920 board
126 1.3.85 5.41 4 Apr 1996
127 2.0.12 5.44 8 Aug 1996 Use ID 7 for all PCI cards
128 2.1.1 5.45 2 Oct 1996 Update ROM accesses for 2.1.x
129 2.1.97 5.46 23 Apr 1998 Rewritten PCI detection routines [mj]
130 2.1.11x 5.47 9 Aug 1998 Touched for 8 SCSI disk majors support
131 5.48 18 Nov 1998 BIOS no longer needed for PCI detection
132 2.2.0 5.50 28 Dec 1998 Support insmod parameters
133
134
135 REFERENCES USED:
136
137 "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation,
138 1990.
139
140 "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain
141 Corporation, January 1992.
142
143 "LXT SCSI Products: Specifications and OEM Technical Manual (Revision
144 B/September 1991)", Maxtor Corporation, 1991.
145
146 "7213S product Manual (Revision P3)", Maxtor Corporation, 1992.
147
148 "Draft Proposed American National Standard: Small Computer System
149 Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109,
150 revision 10h, October 17, 1991)
151
152 Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric
153 Youngdale (ericy@cais.com), 1992.
154
155 Private communication, Tuong Le (Future Domain Engineering department),
156 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and
157 TMC-18C30 detection.)
158
159 Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page
160 60 (2.39: Disk Partition Table Layout).
161
162 "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page
163 6-1.
164
165
166
167 NOTES ON REFERENCES:
168
169 The Maxtor manuals were free. Maxtor telephone technical support is
170 great!
171
172 The Future Domain manuals were $25 and $35. They document the chip, not
173 the TMC-16x0 boards, so some information I had to guess at. In 1992,
174 Future Domain sold DOS BIOS source for $250 and the UN*X driver source was
175 $750, but these required a non-disclosure agreement, so even if I could
176 have afforded them, they would *not* have been useful for writing this
177 publically distributable driver. Future Domain technical support has
178 provided some information on the phone and have sent a few useful FAXs.
179 They have been much more helpful since they started to recognize that the
180 word "Linux" refers to an operating system :-).
181
182
183
184 ALPHA TESTERS:
185
186 There are many other alpha testers that come and go as the driver
187 develops. The people listed here were most helpful in times of greatest
188 need (mostly early on -- I've probably left out a few worthy people in
189 more recent times):
190
191 Todd Carrico (todd@wutc.wustl.edu), Dan Poirier (poirier@cs.unc.edu ), Ken
192 Corey (kenc@sol.acs.unt.edu), C. de Bruin (bruin@bruin@sterbbs.nl), Sakari
193 Aaltonen (sakaria@vipunen.hit.fi), John Rice (rice@xanth.cs.odu.edu), Brad
194 Yearwood (brad@optilink.com), and Ray Toy (toy@soho.crd.ge.com).
195
196 Special thanks to Tien-Wan Yang (twyang@cs.uh.edu), who graciously lent me
197 his 18C50-based card for debugging. He is the sole reason that this
198 driver works with the 18C50 chip.
199
200 Thanks to Dave Newman (dnewman@crl.com) for providing initial patches for
201 the version 3.4 BIOS.
202
203 Thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for providing
204 patches that support the TMC-3260, a PCI bus card with the 36C70 chip.
205 The 36C70 chip appears to be "completely compatible" with the 18C30 chip.
206
207 Thanks to Eric Kasten (tigger@petroglyph.cl.msu.edu) for providing the
208 patch for the version 3.5 BIOS.
209
210 Thanks for Stephen Henson (shenson@nyx10.cs.du.edu) for providing the
211 patch for the Quantum ISA-200S SCSI adapter.
212
213 Thanks to Adam Bowen for the signature to the 1610M/MER/MEX scsi cards, to
214 Martin Andrews (andrewm@ccfadm.eeg.ccf.org) for the signature to some
215 random TMC-1680 repackaged by IBM; and to Mintak Ng (mintak@panix.com) for
216 the version 3.61 BIOS signature.
217
218 Thanks for Mark Singer (elf@netcom.com) and Richard Simpson
219 (rsimpson@ewrcsdra.demon.co.uk) for more Quantum signatures and detective
220 work on the Quantum RAM layout.
221
222 Special thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for
223 providing patches for proper PCI BIOS32-mediated detection of the TMC-3260
224 card (a PCI bus card with the 36C70 chip). Please send James PCI-related
225 bug reports.
226
227 Thanks to Tom Cavin (tec@usa1.com) for preliminary command-line option
228 patches.
229
230 New PCI detection code written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
231
232 Insmod parameter code based on patches from Daniel Graham
233 <graham@balance.uoregon.edu>.
234
235 All of the alpha testers deserve much thanks.
236
237
238
239 NOTES ON USER DEFINABLE OPTIONS:
240
241 DEBUG: This turns on the printing of various debug information.
242
243 ENABLE_PARITY: This turns on SCSI parity checking. With the current
244 driver, all attached devices must support SCSI parity. If none of your
245 devices support parity, then you can probably get the driver to work by
246 turning this option off. I have no way of testing this, however, and it
247 would appear that no one ever uses this option.
248
249 FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the
250 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by
251 the SCSI device, an interrupt will be raised. Therefore, this could be as
252 low as 0, or as high as 16. Note, however, that values which are too high
253 or too low seem to prevent any interrupts from occurring, and thereby lock
254 up the machine. I have found that 2 is a good number, but throughput may
255 be increased by changing this value to values which are close to 2.
256 Please let me know if you try any different values.
257
258 RESELECTION: This is no longer an option, since I gave up trying to
259 implement it in version 4.x of this driver. It did not improve
260 performance at all and made the driver unstable (because I never found one
261 of the two race conditions which were introduced by the multiple
262 outstanding command code). The instability seems a very high price to pay
263 just so that you don't have to wait for the tape to rewind. If you want
264 this feature implemented, send me patches. I'll be happy to send a copy
265 of my (broken) driver to anyone who would like to see a copy.
266
267 **************************************************************************/
268
1da177e4
LT		 269#include <linux/module.h>
270#include <linux/init.h>
271#include <linux/interrupt.h>
272#include <linux/blkdev.h>
273#include <linux/spinlock.h>
274#include <linux/errno.h>
275#include <linux/string.h>
276#include <linux/ioport.h>
277#include <linux/proc_fs.h>
278#include <linux/pci.h>
279#include <linux/stat.h>
280#include <linux/delay.h>
281#include <scsi/scsicam.h>
282
283#include <asm/io.h>
284#include <asm/system.h>
285
286#include <scsi/scsi.h>
287#include <scsi/scsi_cmnd.h>
288#include <scsi/scsi_device.h>
289#include <scsi/scsi_host.h>
290#include <scsi/scsi_ioctl.h>
291#include "fdomain.h"
292
293MODULE_AUTHOR("Rickard E. Faith");
294MODULE_DESCRIPTION("Future domain SCSI driver");
295MODULE_LICENSE("GPL");
296
297
298#define VERSION "$Revision: 5.51 $"
299
300/* START OF USER DEFINABLE OPTIONS */
301
302#define DEBUG 0 /* Enable debugging output */
303#define ENABLE_PARITY 1 /* Enable SCSI Parity */
304#define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */
305
306/* END OF USER DEFINABLE OPTIONS */
307
308#if DEBUG
309#define EVERY_ACCESS 0 /* Write a line on every scsi access */
310#define ERRORS_ONLY 1 /* Only write a line if there is an error */
311#define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */
312#define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */
313#define DEBUG_ABORT 1 /* Debug abort() routine */
314#define DEBUG_RESET 1 /* Debug reset() routine */
315#define DEBUG_RACE 1 /* Debug interrupt-driven race condition */
316#else
317#define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
318#define ERRORS_ONLY 0
319#define DEBUG_DETECT 0
320#define DEBUG_MESSAGES 0
321#define DEBUG_ABORT 0
322#define DEBUG_RESET 0
323#define DEBUG_RACE 0
324#endif
325
326/* Errors are reported on the line, so we don't need to report them again */
327#if EVERY_ACCESS
328#undef ERRORS_ONLY
329#define ERRORS_ONLY 0
330#endif
331
332#if ENABLE_PARITY
333#define PARITY_MASK 0x08
334#else
335#define PARITY_MASK 0x00
336#endif
337
338enum chip_type {
339 unknown = 0x00,
340 tmc1800 = 0x01,
341 tmc18c50 = 0x02,
342 tmc18c30 = 0x03,
343};
344
345enum {
346 in_arbitration = 0x02,
347 in_selection = 0x04,
348 in_other = 0x08,
349 disconnect = 0x10,
350 aborted = 0x20,
351 sent_ident = 0x40,
352};
353
354enum in_port_type {
355 Read_SCSI_Data = 0,
356 SCSI_Status = 1,
357 TMC_Status = 2,
358 FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
359 Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
360 LSB_ID_Code = 5,
361 MSB_ID_Code = 6,
362 Read_Loopback = 7,
363 SCSI_Data_NoACK = 8,
364 Interrupt_Status = 9,
365 Configuration1 = 10,
366 Configuration2 = 11, /* tmc18c50/tmc18c30 only */
367 Read_FIFO = 12,
368 FIFO_Data_Count = 14
369};
370
371enum out_port_type {
372 Write_SCSI_Data = 0,
373 SCSI_Cntl = 1,
374 Interrupt_Cntl = 2,
375 SCSI_Mode_Cntl = 3,
376 TMC_Cntl = 4,
377 Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
378 Write_Loopback = 7,
379 IO_Control = 11, /* tmc18c30 only */
380 Write_FIFO = 12
381};
382
383/* .bss will zero all the static variables below */
384static int port_base;
385static unsigned long bios_base;
386static void __iomem * bios_mem;
387static int bios_major;
388static int bios_minor;
389static int PCI_bus;
390static int Quantum; /* Quantum board variant */
391static int interrupt_level;
392static volatile int in_command;
393static struct scsi_cmnd *current_SC;
394static enum chip_type chip = unknown;
395static int adapter_mask;
396static int this_id;
397static int setup_called;
398
399#if DEBUG_RACE
400static volatile int in_interrupt_flag;
401#endif
402
403static int FIFO_Size = 0x2000; /* 8k FIFO for
404 pre-tmc18c30 chips */
405
406static irqreturn_t do_fdomain_16x0_intr( int irq, void *dev_id,
407 struct pt_regs * regs );
408/* Allow insmod parameters to be like LILO parameters. For example:
409 insmod fdomain fdomain=0x140,11 */
410static char * fdomain = NULL;
411module_param(fdomain, charp, 0);
412
413static unsigned long addresses[] = {
414 0xc8000,
415 0xca000,
416 0xce000,
417 0xde000,
418 0xcc000, /* Extra addresses for PCI boards */
419 0xd0000,
420 0xe0000,
421};
6391a113
TK		 422#define ADDRESS_COUNT ARRAY_SIZE(addresses)
423
1da177e4 424static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
6391a113 425#define PORT_COUNT ARRAY_SIZE(ports)
1da177e4
LT		 426
427static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
428
429/*
430
431 READ THIS BEFORE YOU ADD A SIGNATURE!
432
433 READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME!
434
435 READ EVERY WORD, ESPECIALLY THE WORD *NOT*
436
437 This driver works *ONLY* for Future Domain cards using the TMC-1800,
438 TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670,
439 and 1680. These are all 16-bit cards.
440
441 The following BIOS signature signatures are for boards which do *NOT*
442 work with this driver (these TMC-8xx and TMC-9xx boards may work with the
443 Seagate driver):
444
445 FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88
446 FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89
447 FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89
448 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90
449 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90
450 FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90
451 FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92
452
453 (The cards which do *NOT* work are all 8-bit cards -- although some of
454 them have a 16-bit form-factor, the upper 8-bits are used only for IRQs
455 and are *NOT* used for data. You can tell the difference by following
456 the tracings on the circuit board -- if only the IRQ lines are involved,
457 you have a "8-bit" card, and should *NOT* use this driver.)
458
459*/
460
461static struct signature {
462 const char *signature;
463 int sig_offset;
464 int sig_length;
465 int major_bios_version;
466 int minor_bios_version;
467 int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */
468} signatures[] = {
469 /* 1 2 3 4 5 6 */
470 /* 123456789012345678901234567890123456789012345678901234567890 */
471 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 },
472 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 },
473 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 },
474 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 },
475 { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 },
476 { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 },
477 { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 },
478 { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 },
479 { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 },
480 { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 },
481 { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 },
482 { "IBM F1 P264/32", 5, 14, 3, -1, 1 },
483 /* This next signature may not be a 3.5 bios */
484 { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 },
485 { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 },
486 { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 },
487 { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 },
488 { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 },
489 { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 },
490
491 /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE
492 Also, fix the disk geometry code for your signature and send your
493 changes for faith@cs.unc.edu. Above all, do *NOT* change any old
494 signatures!
495
496 Note that the last line will match a "generic" 18XX bios. Because
497 Future Domain has changed the host SCSI ID and/or the location of the
498 geometry information in the on-board RAM area for each of the first
499 three BIOS's, it is still important to enter a fully qualified
500 signature in the table for any new BIOS's (after the host SCSI ID and
501 geometry location are verified). */
502};
503
6391a113 504#define SIGNATURE_COUNT ARRAY_SIZE(signatures)
1da177e4
LT		 505
506static void print_banner( struct Scsi_Host *shpnt )
507{
508 if (!shpnt) return; /* This won't ever happen */
509
510 if (bios_major < 0 && bios_minor < 0) {
511 printk(KERN_INFO "scsi%d: <fdomain> No BIOS; using scsi id %d\n",
512 shpnt->host_no, shpnt->this_id);
513 } else {
514 printk(KERN_INFO "scsi%d: <fdomain> BIOS version ", shpnt->host_no);
515
516 if (bios_major >= 0) printk("%d.", bios_major);
517 else printk("?.");
518
519 if (bios_minor >= 0) printk("%d", bios_minor);
520 else printk("?.");
6391a113 521
1da177e4
LT		 522 printk( " at 0x%lx using scsi id %d\n",
523 bios_base, shpnt->this_id );
524 }
525
526 /* If this driver works for later FD PCI
527 boards, we will have to modify banner
528 for additional PCI cards, but for now if
529 it's PCI it's a TMC-3260 - JTM */
530 printk(KERN_INFO "scsi%d: <fdomain> %s chip at 0x%x irq ",
531 shpnt->host_no,
532 chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")),
533 port_base);
534
535 if (interrupt_level)
536 printk("%d", interrupt_level);
537 else
538 printk("<none>");
539
540 printk( "\n" );
541}
542
543int fdomain_setup(char *str)
544{
545 int ints[4];
546
547 (void)get_options(str, ARRAY_SIZE(ints), ints);
548
549 if (setup_called++ || ints[0] < 2 || ints[0] > 3) {
550 printk(KERN_INFO "scsi: <fdomain> Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n");
551 printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n");
552 return 0;
553 }
554
555 port_base = ints[0] >= 1 ? ints[1] : 0;
556 interrupt_level = ints[0] >= 2 ? ints[2] : 0;
557 this_id = ints[0] >= 3 ? ints[3] : 0;
558
559 bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */
560 ++setup_called;
561 return 1;
562}
563
564__setup("fdomain=", fdomain_setup);
565
566
567static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */
568{
569 mdelay(10*amount);
570}
571
77933d72 572static inline void fdomain_make_bus_idle( void )
1da177e4
LT		 573{
574 outb(0, port_base + SCSI_Cntl);
575 outb(0, port_base + SCSI_Mode_Cntl);
576 if (chip == tmc18c50 || chip == tmc18c30)
577 outb(0x21 | PARITY_MASK, port_base + TMC_Cntl); /* Clear forced intr. */
578 else
579 outb(0x01 | PARITY_MASK, port_base + TMC_Cntl);
580}
581
582static int fdomain_is_valid_port( int port )
583{
584#if DEBUG_DETECT
585 printk( " (%x%x),",
586 inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) );
587#endif
588
589 /* The MCA ID is a unique id for each MCA compatible board. We
590 are using ISA boards, but Future Domain provides the MCA ID
591 anyway. We can use this ID to ensure that this is a Future
592 Domain TMC-1660/TMC-1680.
593 */
594
595 if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */
596 if (inb( port + LSB_ID_Code ) != 0x27) return 0;
597 if (inb( port + MSB_ID_Code ) != 0x61) return 0;
598 chip = tmc1800;
599 } else { /* test for 0xe960 id */
600 if (inb( port + MSB_ID_Code ) != 0x60) return 0;
601 chip = tmc18c50;
602
603 /* Try to toggle 32-bit mode. This only
604 works on an 18c30 chip. (User reports
605 say this works, so we should switch to
606 it in the near future.) */
607
608 outb( 0x80, port + IO_Control );
609 if ((inb( port + Configuration2 ) & 0x80) == 0x80) {
610 outb( 0x00, port + IO_Control );
611 if ((inb( port + Configuration2 ) & 0x80) == 0x00) {
612 chip = tmc18c30;
613 FIFO_Size = 0x800; /* 2k FIFO */
614 }
615 }
616 /* If that failed, we are an 18c50. */
617 }
618
619 return 1;
620}
621
622static int fdomain_test_loopback( void )
623{
624 int i;
625 int result;
626
627 for (i = 0; i < 255; i++) {
628 outb( i, port_base + Write_Loopback );
629 result = inb( port_base + Read_Loopback );
630 if (i != result)
631 return 1;
632 }
633 return 0;
634}
635
636/* fdomain_get_irq assumes that we have a valid MCA ID for a
637 TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the
638 bios_base matches these ports. If someone was unlucky enough to have
639 purchased more than one Future Domain board, then they will have to
640 modify this code, as we only detect one board here. [The one with the
641 lowest bios_base.]
642
643 Note that this routine is only used for systems without a PCI BIOS32
644 (e.g., ISA bus). For PCI bus systems, this routine will likely fail
645 unless one of the IRQs listed in the ints array is used by the board.
646 Sometimes it is possible to use the computer's BIOS setup screen to
647 configure a PCI system so that one of these IRQs will be used by the
648 Future Domain card. */
649
650static int fdomain_get_irq( int base )
651{
652 int options = inb(base + Configuration1);
653
654#if DEBUG_DETECT
655 printk("scsi: <fdomain> Options = %x\n", options);
656#endif
657
658 /* Check for board with lowest bios_base --
659 this isn't valid for the 18c30 or for
660 boards on the PCI bus, so just assume we
661 have the right board. */
662
663 if (chip != tmc18c30 && !PCI_bus && addresses[(options & 0xc0) >> 6 ] != bios_base)
664 return 0;
665 return ints[(options & 0x0e) >> 1];
666}
667
668static int fdomain_isa_detect( int *irq, int *iobase )
669{
670#ifndef PCMCIA
671 int i, j;
672 int base = 0xdeadbeef;
673 int flag = 0;
674
675#if DEBUG_DETECT
676 printk( "scsi: <fdomain> fdomain_isa_detect:" );
677#endif
678
679 for (i = 0; i < ADDRESS_COUNT; i++) {
680 void __iomem *p = ioremap(addresses[i], 0x2000);
681 if (!p)
682 continue;
683#if DEBUG_DETECT
684 printk( " %lx(%lx),", addresses[i], bios_base );
685#endif
686 for (j = 0; j < SIGNATURE_COUNT; j++) {
687 if (check_signature(p + signatures[j].sig_offset,
688 signatures[j].signature,
689 signatures[j].sig_length )) {
690 bios_major = signatures[j].major_bios_version;
691 bios_minor = signatures[j].minor_bios_version;
692 PCI_bus = (signatures[j].flag == 1);
693 Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0;
694 bios_base = addresses[i];
695 bios_mem = p;
696 goto found;
697 }
698 }
699 iounmap(p);
700 }
701
702found:
703 if (bios_major == 2) {
704 /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM.
705 Assuming the ROM is enabled (otherwise we wouldn't have been
706 able to read the ROM signature :-), then the ROM sets up the
707 RAM area with some magic numbers, such as a list of port
708 base addresses and a list of the disk "geometry" reported to
709 DOS (this geometry has nothing to do with physical geometry).
710 */
711
712 switch (Quantum) {
713 case 2: /* ISA_200S */
714 case 3: /* ISA_250MG */
715 base = readb(bios_mem + 0x1fa2) + (readb(bios_mem + 0x1fa3) << 8);
716 break;
717 case 4: /* ISA_200S (another one) */
718 base = readb(bios_mem + 0x1fa3) + (readb(bios_mem + 0x1fa4) << 8);
719 break;
720 default:
721 base = readb(bios_mem + 0x1fcc) + (readb(bios_mem + 0x1fcd) << 8);
722 break;
723 }
724
725#if DEBUG_DETECT
726 printk( " %x,", base );
727#endif
728
729 for (i = 0; i < PORT_COUNT; i++) {
730 if (base == ports[i]) {
731 if (!request_region(base, 0x10, "fdomain"))
732 break;
733 if (!fdomain_is_valid_port(base)) {
734 release_region(base, 0x10);
735 break;
736 }
737 *irq = fdomain_get_irq( base );
738 *iobase = base;
739 return 1;
740 }
741 }
742
743 /* This is a bad sign. It usually means that someone patched the
744 BIOS signature list (the signatures variable) to contain a BIOS
745 signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */
746
747#if DEBUG_DETECT
748 printk( " RAM FAILED, " );
749#endif
750 }
751
752 /* Anyway, the alternative to finding the address in the RAM is to just
753 search through every possible port address for one that is attached
754 to the Future Domain card. Don't panic, though, about reading all
755 these random port addresses -- there are rumors that the Future
756 Domain BIOS does something very similar.
757
758 Do not, however, check ports which the kernel knows are being used by
759 another driver. */
760
761 for (i = 0; i < PORT_COUNT; i++) {
762 base = ports[i];
763 if (!request_region(base, 0x10, "fdomain")) {
764#if DEBUG_DETECT
765 printk( " (%x inuse),", base );
766#endif
767 continue;
768 }
769#if DEBUG_DETECT
770 printk( " %x,", base );
771#endif
772 flag = fdomain_is_valid_port(base);
773 if (flag)
774 break;
775 release_region(base, 0x10);
776 }
777
778#if DEBUG_DETECT
779 if (flag) printk( " SUCCESS\n" );
780 else printk( " FAILURE\n" );
781#endif
782
783 if (!flag) return 0; /* iobase not found */
784
785 *irq = fdomain_get_irq( base );
786 *iobase = base;
787
788 return 1; /* success */
789#else
790 return 0;
791#endif
792}
793
794/* PCI detection function: int fdomain_pci_bios_detect(int* irq, int*
795 iobase) This function gets the Interrupt Level and I/O base address from
796 the PCI configuration registers. */
797
798#ifdef CONFIG_PCI
799static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev )
800{
801 unsigned int pci_irq; /* PCI interrupt line */
802 unsigned long pci_base; /* PCI I/O base address */
803 struct pci_dev *pdev = NULL;
804
805#if DEBUG_DETECT
806 /* Tell how to print a list of the known PCI devices from bios32 and
807 list vendor and device IDs being used if in debug mode. */
808
809 printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" );
810 printk( "scsi: <fdomain> TMC-3260 detect:"
811 " Using Vendor ID: 0x%x and Device ID: 0x%x\n",
812 PCI_VENDOR_ID_FD,
813 PCI_DEVICE_ID_FD_36C70 );
814#endif
815
816 if ((pdev = pci_find_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL)
817 return 0;
818 if (pci_enable_device(pdev)) return 0;
819
820#if DEBUG_DETECT
821 printk( "scsi: <fdomain> TMC-3260 detect:"
822 " PCI bus %u, device %u, function %u\n",
823 pdev->bus->number,
824 PCI_SLOT(pdev->devfn),
825 PCI_FUNC(pdev->devfn));
826#endif
827
828 /* We now have the appropriate device function for the FD board so we
829 just read the PCI config info from the registers. */
830
831 pci_base = pci_resource_start(pdev, 0);
832 pci_irq = pdev->irq;
833
834 if (!request_region( pci_base, 0x10, "fdomain" ))
835 return 0;
836
837 /* Now we have the I/O base address and interrupt from the PCI
838 configuration registers. */
839
840 *irq = pci_irq;
841 *iobase = pci_base;
842 *ret_pdev = pdev;
843
844#if DEBUG_DETECT
845 printk( "scsi: <fdomain> TMC-3260 detect:"
846 " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base );
847#endif
848
849 if (!fdomain_is_valid_port(pci_base)) {
850 printk(KERN_ERR "scsi: <fdomain> PCI card detected, but driver not loaded (invalid port)\n" );
851 release_region(pci_base, 0x10);
852 return 0;
853 }
854
855 /* Fill in a few global variables. Ugh. */
856 bios_major = bios_minor = -1;
857 PCI_bus = 1;
858 Quantum = 0;
859 bios_base = 0;
860
861 return 1;
862}
863#endif
864
865struct Scsi_Host *__fdomain_16x0_detect(struct scsi_host_template *tpnt )
866{
867 int retcode;
868 struct Scsi_Host *shpnt;
869 struct pci_dev *pdev = NULL;
870
871 if (setup_called) {
872#if DEBUG_DETECT
873 printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n",
874 port_base, interrupt_level );
875#endif
876 if (!request_region(port_base, 0x10, "fdomain")) {
877 printk( "scsi: <fdomain> port 0x%x is busy\n", port_base );
878 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
879 return NULL;
880 }
881 if (!fdomain_is_valid_port( port_base )) {
882 printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n",
883 port_base );
884 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
885 release_region(port_base, 0x10);
886 return NULL;
887 }
888 } else {
889 int flag = 0;
890
891#ifdef CONFIG_PCI
892 /* Try PCI detection first */
893 flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev );
894#endif
895 if (!flag) {
896 /* Then try ISA bus detection */
897 flag = fdomain_isa_detect( &interrupt_level, &port_base );
898
899 if (!flag) {
900 printk( "scsi: <fdomain> Detection failed (no card)\n" );
901 return NULL;
902 }
903 }
904 }
905
906 fdomain_16x0_bus_reset(NULL);
907
908 if (fdomain_test_loopback()) {
909 printk(KERN_ERR "scsi: <fdomain> Detection failed (loopback test failed at port base 0x%x)\n", port_base);
910 if (setup_called) {
911 printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n");
912 }
913 release_region(port_base, 0x10);
914 return NULL;
915 }
916
917 if (this_id) {
918 tpnt->this_id = (this_id & 0x07);
919 adapter_mask = (1 << tpnt->this_id);
920 } else {
921 if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) {
922 tpnt->this_id = 7;
923 adapter_mask = 0x80;
924 } else {
925 tpnt->this_id = 6;
926 adapter_mask = 0x40;
927 }
928 }
929
930/* Print out a banner here in case we can't
931 get resources. */
932
933 shpnt = scsi_register( tpnt, 0 );
934 if(shpnt == NULL) {
935 release_region(port_base, 0x10);
936 return NULL;
937 }
938 shpnt->irq = interrupt_level;
939 shpnt->io_port = port_base;
1da177e4
LT		 940 shpnt->n_io_port = 0x10;
941 print_banner( shpnt );
942
943 /* Log IRQ with kernel */
944 if (!interrupt_level) {
945 printk(KERN_ERR "scsi: <fdomain> Card Detected, but driver not loaded (no IRQ)\n" );
946 release_region(port_base, 0x10);
947 return NULL;
948 } else {
949 /* Register the IRQ with the kernel */
950
951 retcode = request_irq( interrupt_level,
952 do_fdomain_16x0_intr, pdev?SA_SHIRQ:0, "fdomain", shpnt);
953
954 if (retcode < 0) {
955 if (retcode == -EINVAL) {
956 printk(KERN_ERR "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level );
957 printk(KERN_ERR " This shouldn't happen!\n" );
958 printk(KERN_ERR " Send mail to faith@acm.org\n" );
959 } else if (retcode == -EBUSY) {
960 printk(KERN_ERR "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level );
961 printk(KERN_ERR " Please use another IRQ!\n" );
962 } else {
963 printk(KERN_ERR "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level );
964 printk(KERN_ERR " This shouldn't happen!\n" );
965 printk(KERN_ERR " Send mail to faith@acm.org\n" );
966 }
967 printk(KERN_ERR "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" );
968 release_region(port_base, 0x10);
969 return NULL;
970 }
971 }
972 return shpnt;
973}
974
975static int fdomain_16x0_detect(struct scsi_host_template *tpnt)
976{
977 if (fdomain)
978 fdomain_setup(fdomain);
979 return (__fdomain_16x0_detect(tpnt) != NULL);
980}
981
982static const char *fdomain_16x0_info( struct Scsi_Host *ignore )
983{
984 static char buffer[128];
985 char *pt;
986
987 strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" );
988 if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */
989 strcat( buffer, strchr( VERSION, ':' ) + 1 );
990 pt = strrchr( buffer, '$') - 1;
991 if (!pt) /* Stripped RCS Revision string? */
992 pt = buffer + strlen( buffer ) - 1;
993 if (*pt != ' ')
994 ++pt;
995 *pt = '\0';
996 } else { /* Assume VERSION is a number */
997 strcat( buffer, " " VERSION );
998 }
999
1000 return buffer;
1001}
1002
1003#if 0
1004static int fdomain_arbitrate( void )
1005{
1006 int status = 0;
1007 unsigned long timeout;
1008
1009#if EVERY_ACCESS
1010 printk( "fdomain_arbitrate()\n" );
1011#endif
1012
1013 outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */
1014 outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */
1015 outb(0x04 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */
1016
1017 timeout = 500;
1018 do {
1019 status = inb(port_base + TMC_Status); /* Read adapter status */
1020 if (status & 0x02) /* Arbitration complete */
1021 return 0;
1022 mdelay(1); /* Wait one millisecond */
1023 } while (--timeout);
1024
1025 /* Make bus idle */
1026 fdomain_make_bus_idle();
1027
1028#if EVERY_ACCESS
1029 printk( "Arbitration failed, status = %x\n", status );
1030#endif
1031#if ERRORS_ONLY
1032 printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status );
1033#endif
1034 return 1;
1035}
1036#endif
1037
1038static int fdomain_select( int target )
1039{
1040 int status;
1041 unsigned long timeout;
1042#if ERRORS_ONLY
1043 static int flag = 0;
1044#endif
1045
1046 outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */
1047 outb(adapter_mask | (1 << target), port_base + SCSI_Data_NoACK);
1048
1049 /* Stop arbitration and enable parity */
1050 outb(PARITY_MASK, port_base + TMC_Cntl);
1051
1052 timeout = 350; /* 350 msec */
1053
1054 do {
1055 status = inb(port_base + SCSI_Status); /* Read adapter status */
1056 if (status & 1) { /* Busy asserted */
1057 /* Enable SCSI Bus (on error, should make bus idle with 0) */
1058 outb(0x80, port_base + SCSI_Cntl);
1059 return 0;
1060 }
1061 mdelay(1); /* wait one msec */
1062 } while (--timeout);
1063 /* Make bus idle */
1064 fdomain_make_bus_idle();
1065#if EVERY_ACCESS
1066 if (!target) printk( "Selection failed\n" );
1067#endif
1068#if ERRORS_ONLY
1069 if (!target) {
1070 if (!flag) /* Skip first failure for all chips. */
1071 ++flag;
1072 else
1073 printk( "scsi: <fdomain> Selection failed\n" );
1074 }
1075#endif
1076 return 1;
1077}
1078
1079static void my_done(int error)
1080{
1081 if (in_command) {
1082 in_command = 0;
1083 outb(0x00, port_base + Interrupt_Cntl);
1084 fdomain_make_bus_idle();
1085 current_SC->result = error;
1086 if (current_SC->scsi_done)
1087 current_SC->scsi_done( current_SC );
1088 else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" );
1089 } else {
1090 panic( "scsi: <fdomain> my_done() called outside of command\n" );
1091 }
1092#if DEBUG_RACE
1093 in_interrupt_flag = 0;
1094#endif
1095}
1096
1097static irqreturn_t do_fdomain_16x0_intr(int irq, void *dev_id,
1098 struct pt_regs * regs )
1099{
1100 unsigned long flags;
1101 int status;
1102 int done = 0;
1103 unsigned data_count;
1104
1105 /* The fdomain_16x0_intr is only called via
1106 the interrupt handler. The goal of the
1107 sti() here is to allow other
1108 interruptions while this routine is
1109 running. */
1110
1111 /* Check for other IRQ sources */
1112 if ((inb(port_base + TMC_Status) & 0x01) == 0)
1113 return IRQ_NONE;
1114
1115 /* It is our IRQ */
1116 outb(0x00, port_base + Interrupt_Cntl);
1117
1118 /* We usually have one spurious interrupt after each command. Ignore it. */
1119 if (!in_command || !current_SC) { /* Spurious interrupt */
1120#if EVERY_ACCESS
1121 printk( "Spurious interrupt, in_command = %d, current_SC = %x\n",
1122 in_command, current_SC );
1123#endif
1124 return IRQ_NONE;
1125 }
1126
1127 /* Abort calls my_done, so we do nothing here. */
1128 if (current_SC->SCp.phase & aborted) {
1129#if DEBUG_ABORT
1130 printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" );
1131#endif
1132 /*
1133 return IRQ_HANDLED; */
1134 }
1135
1136#if DEBUG_RACE
1137 ++in_interrupt_flag;
1138#endif
1139
1140 if (current_SC->SCp.phase & in_arbitration) {
1141 status = inb(port_base + TMC_Status); /* Read adapter status */
1142 if (!(status & 0x02)) {
1143#if EVERY_ACCESS
1144 printk( " AFAIL " );
1145#endif
1146 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1147 my_done( DID_BUS_BUSY << 16 );
1148 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1149 return IRQ_HANDLED;
1150 }
1151 current_SC->SCp.phase = in_selection;
1152
1153 outb(0x40 | FIFO_COUNT, port_base + Interrupt_Cntl);
1154
1155 outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */
422c0d61 1156 outb(adapter_mask | (1 << scmd_id(current_SC)), port_base + SCSI_Data_NoACK);
1da177e4
LT		 1157
1158 /* Stop arbitration and enable parity */
1159 outb(0x10 | PARITY_MASK, port_base + TMC_Cntl);
1160#if DEBUG_RACE
1161 in_interrupt_flag = 0;
1162#endif
1163 return IRQ_HANDLED;
1164 } else if (current_SC->SCp.phase & in_selection) {
1165 status = inb(port_base + SCSI_Status);
1166 if (!(status & 0x01)) {
1167 /* Try again, for slow devices */
422c0d61 1168 if (fdomain_select( scmd_id(current_SC) )) {
1da177e4
LT		 1169#if EVERY_ACCESS
1170 printk( " SFAIL " );
1171#endif
1172 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1173 my_done( DID_NO_CONNECT << 16 );
1174 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1175 return IRQ_HANDLED;
1176 } else {
1177#if EVERY_ACCESS
1178 printk( " AltSel " );
1179#endif
1180 /* Stop arbitration and enable parity */
1181 outb(0x10 | PARITY_MASK, port_base + TMC_Cntl);
1182 }
1183 }
1184 current_SC->SCp.phase = in_other;
1185 outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl);
1186 outb(0x80, port_base + SCSI_Cntl);
1187#if DEBUG_RACE
1188 in_interrupt_flag = 0;
1189#endif
1190 return IRQ_HANDLED;
1191 }
1192
1193 /* current_SC->SCp.phase == in_other: this is the body of the routine */
1194
1195 status = inb(port_base + SCSI_Status);
1196
1197 if (status & 0x10) { /* REQ */
1198
1199 switch (status & 0x0e) {
1200
1201 case 0x08: /* COMMAND OUT */
1202 outb(current_SC->cmnd[current_SC->SCp.sent_command++],
1203 port_base + Write_SCSI_Data);
1204#if EVERY_ACCESS
1205 printk( "CMD = %x,",
1206 current_SC->cmnd[ current_SC->SCp.sent_command - 1] );
1207#endif
1208 break;
1209 case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
1210 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
1211 current_SC->SCp.have_data_in = -1;
1212 outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl);
1213 }
1214 break;
1215 case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
1216 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
1217 current_SC->SCp.have_data_in = 1;
1218 outb(0x90 | PARITY_MASK, port_base + TMC_Cntl);
1219 }
1220 break;
1221 case 0x0c: /* STATUS IN */
1222 current_SC->SCp.Status = inb(port_base + Read_SCSI_Data);
1223#if EVERY_ACCESS
1224 printk( "Status = %x, ", current_SC->SCp.Status );
1225#endif
1226#if ERRORS_ONLY
1227 if (current_SC->SCp.Status
1228 && current_SC->SCp.Status != 2
1229 && current_SC->SCp.Status != 8) {
1230 printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n",
1231 current_SC->device->id,
1232 current_SC->cmnd[0],
1233 current_SC->SCp.Status );
1234 }
1235#endif
1236 break;
1237 case 0x0a: /* MESSAGE OUT */
1238 outb(MESSAGE_REJECT, port_base + Write_SCSI_Data); /* Reject */
1239 break;
1240 case 0x0e: /* MESSAGE IN */
1241 current_SC->SCp.Message = inb(port_base + Read_SCSI_Data);
1242#if EVERY_ACCESS
1243 printk( "Message = %x, ", current_SC->SCp.Message );
1244#endif
1245 if (!current_SC->SCp.Message) ++done;
1246#if DEBUG_MESSAGES || EVERY_ACCESS
1247 if (current_SC->SCp.Message) {
1248 printk( "scsi: <fdomain> message = %x\n",
1249 current_SC->SCp.Message );
1250 }
1251#endif
1252 break;
1253 }
1254 }
1255
1256 if (chip == tmc1800 && !current_SC->SCp.have_data_in
1257 && (current_SC->SCp.sent_command >= current_SC->cmd_len)) {
1258
1259 if(current_SC->sc_data_direction == DMA_TO_DEVICE)
1260 {
1261 current_SC->SCp.have_data_in = -1;
1262 outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl);
1263 }
1264 else
1265 {
1266 current_SC->SCp.have_data_in = 1;
1267 outb(0x90 | PARITY_MASK, port_base + TMC_Cntl);
1268 }
1269 }
1270
1271 if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
1272 while ((data_count = FIFO_Size - inw(port_base + FIFO_Data_Count)) > 512) {
1273#if EVERY_ACCESS
1274 printk( "DC=%d, ", data_count ) ;
1275#endif
1276 if (data_count > current_SC->SCp.this_residual)
1277 data_count = current_SC->SCp.this_residual;
1278 if (data_count > 0) {
1279#if EVERY_ACCESS
1280 printk( "%d OUT, ", data_count );
1281#endif
1282 if (data_count == 1) {
1283 outb(*current_SC->SCp.ptr++, port_base + Write_FIFO);
1284 --current_SC->SCp.this_residual;
1285 } else {
1286 data_count >>= 1;
1287 outsw(port_base + Write_FIFO, current_SC->SCp.ptr, data_count);
1288 current_SC->SCp.ptr += 2 * data_count;
1289 current_SC->SCp.this_residual -= 2 * data_count;
1290 }
1291 }
1292 if (!current_SC->SCp.this_residual) {
1293 if (current_SC->SCp.buffers_residual) {
1294 --current_SC->SCp.buffers_residual;
1295 ++current_SC->SCp.buffer;
1296 current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset;
1297 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1298 } else
1299 break;
1300 }
1301 }
1302 }
1303
1304 if (current_SC->SCp.have_data_in == 1) { /* DATA IN */
1305 while ((data_count = inw(port_base + FIFO_Data_Count)) > 0) {
1306#if EVERY_ACCESS
1307 printk( "DC=%d, ", data_count );
1308#endif
1309 if (data_count > current_SC->SCp.this_residual)
1310 data_count = current_SC->SCp.this_residual;
1311 if (data_count) {
1312#if EVERY_ACCESS
1313 printk( "%d IN, ", data_count );
1314#endif
1315 if (data_count == 1) {
1316 *current_SC->SCp.ptr++ = inb(port_base + Read_FIFO);
1317 --current_SC->SCp.this_residual;
1318 } else {
1319 data_count >>= 1; /* Number of words */
1320 insw(port_base + Read_FIFO, current_SC->SCp.ptr, data_count);
1321 current_SC->SCp.ptr += 2 * data_count;
1322 current_SC->SCp.this_residual -= 2 * data_count;
1323 }
1324 }
1325 if (!current_SC->SCp.this_residual
1326 && current_SC->SCp.buffers_residual) {
1327 --current_SC->SCp.buffers_residual;
1328 ++current_SC->SCp.buffer;
1329 current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset;
1330 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1331 }
1332 }
1333 }
1334
1335 if (done) {
1336#if EVERY_ACCESS
1337 printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in );
1338#endif
1339
1340#if ERRORS_ONLY
1341 if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) {
1342 if ((unsigned char)(*((char *)current_SC->request_buffer+2)) & 0x0f) {
1343 unsigned char key;
1344 unsigned char code;
1345 unsigned char qualifier;
1346
1347 key = (unsigned char)(*((char *)current_SC->request_buffer + 2))
1348 & 0x0f;
1349 code = (unsigned char)(*((char *)current_SC->request_buffer + 12));
1350 qualifier = (unsigned char)(*((char *)current_SC->request_buffer
1351 + 13));
1352
1353 if (key != UNIT_ATTENTION
1354 && !(key == NOT_READY
1355 && code == 0x04
1356 && (!qualifier || qualifier == 0x02 || qualifier == 0x01))
1357 && !(key == ILLEGAL_REQUEST && (code == 0x25
1358 || code == 0x24
1359 || !code)))
1360
1361 printk( "scsi: <fdomain> REQUEST SENSE"
1362 " Key = %x, Code = %x, Qualifier = %x\n",
1363 key, code, qualifier );
1364 }
1365 }
1366#endif
1367#if EVERY_ACCESS
1368 printk( "BEFORE MY_DONE. . ." );
1369#endif
1370 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1371 my_done( (current_SC->SCp.Status & 0xff)
1372 | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) );
1373 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1374#if EVERY_ACCESS
1375 printk( "RETURNING.\n" );
1376#endif
1377
1378 } else {
1379 if (current_SC->SCp.phase & disconnect) {
1380 outb(0xd0 | FIFO_COUNT, port_base + Interrupt_Cntl);
1381 outb(0x00, port_base + SCSI_Cntl);
1382 } else {
1383 outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl);
1384 }
1385 }
1386#if DEBUG_RACE
1387 in_interrupt_flag = 0;
1388#endif
1389 return IRQ_HANDLED;
1390}
1391
1392static int fdomain_16x0_queue(struct scsi_cmnd *SCpnt,
1393 void (*done)(struct scsi_cmnd *))
1394{
1395 if (in_command) {
1396 panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" );
1397 }
1398#if EVERY_ACCESS
1399 printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1400 SCpnt->target,
1401 *(unsigned char *)SCpnt->cmnd,
1402 SCpnt->use_sg,
1403 SCpnt->request_bufflen );
1404#endif
1405
1406 fdomain_make_bus_idle();
1407
1408 current_SC = SCpnt; /* Save this for the done function */
1409 current_SC->scsi_done = done;
1410
1411 /* Initialize static data */
1412
1413 if (current_SC->use_sg) {
1414 current_SC->SCp.buffer =
1415 (struct scatterlist *)current_SC->request_buffer;
1416 current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset;
1417 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1418 current_SC->SCp.buffers_residual = current_SC->use_sg - 1;
1419 } else {
1420 current_SC->SCp.ptr = (char *)current_SC->request_buffer;
1421 current_SC->SCp.this_residual = current_SC->request_bufflen;
1422 current_SC->SCp.buffer = NULL;
1423 current_SC->SCp.buffers_residual = 0;
1424 }
1425
1426
1427 current_SC->SCp.Status = 0;
1428 current_SC->SCp.Message = 0;
1429 current_SC->SCp.have_data_in = 0;
1430 current_SC->SCp.sent_command = 0;
1431 current_SC->SCp.phase = in_arbitration;
1432
1433 /* Start arbitration */
1434 outb(0x00, port_base + Interrupt_Cntl);
1435 outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */
1436 outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */
1437 ++in_command;
1438 outb(0x20, port_base + Interrupt_Cntl);
1439 outb(0x14 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */
1440
1441 return 0;
1442}
1443
1444#if DEBUG_ABORT
1445static void print_info(struct scsi_cmnd *SCpnt)
1446{
1447 unsigned int imr;
1448 unsigned int irr;
1449 unsigned int isr;
1450
1451 if (!SCpnt || !SCpnt->device || !SCpnt->device->host) {
1452 printk(KERN_WARNING "scsi: <fdomain> Cannot provide detailed information\n");
1453 return;
1454 }
1455
1456 printk(KERN_INFO "%s\n", fdomain_16x0_info( SCpnt->device->host ) );
1457 print_banner(SCpnt->device->host);
1458 switch (SCpnt->SCp.phase) {
1459 case in_arbitration: printk("arbitration"); break;
1460 case in_selection: printk("selection"); break;
1461 case in_other: printk("other"); break;
1462 default: printk("unknown"); break;
1463 }
1464
1465 printk( " (%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1466 SCpnt->SCp.phase,
1467 SCpnt->device->id,
1468 *(unsigned char *)SCpnt->cmnd,
1469 SCpnt->use_sg,
1470 SCpnt->request_bufflen );
1471 printk( "sent_command = %d, have_data_in = %d, timeout = %d\n",
1472 SCpnt->SCp.sent_command,
1473 SCpnt->SCp.have_data_in,
1474 SCpnt->timeout );
1475#if DEBUG_RACE
1476 printk( "in_interrupt_flag = %d\n", in_interrupt_flag );
1477#endif
1478
1479 imr = (inb( 0x0a1 ) << 8) + inb( 0x21 );
1480 outb( 0x0a, 0xa0 );
1481 irr = inb( 0xa0 ) << 8;
1482 outb( 0x0a, 0x20 );
1483 irr += inb( 0x20 );
1484 outb( 0x0b, 0xa0 );
1485 isr = inb( 0xa0 ) << 8;
1486 outb( 0x0b, 0x20 );
1487 isr += inb( 0x20 );
1488
1489 /* Print out interesting information */
1490 printk( "IMR = 0x%04x", imr );
1491 if (imr & (1 << interrupt_level))
1492 printk( " (masked)" );
1493 printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr );
1494
1495 printk( "SCSI Status = 0x%02x\n", inb(port_base + SCSI_Status));
1496 printk( "TMC Status = 0x%02x", inb(port_base + TMC_Status));
1497 if (inb((port_base + TMC_Status) & 1))
1498 printk( " (interrupt)" );
1499 printk( "\n" );
1500 printk("Interrupt Status = 0x%02x", inb(port_base + Interrupt_Status));
1501 if (inb(port_base + Interrupt_Status) & 0x08)
1502 printk( " (enabled)" );
1503 printk( "\n" );
1504 if (chip == tmc18c50 || chip == tmc18c30) {
1505 printk("FIFO Status = 0x%02x\n", inb(port_base + FIFO_Status));
1506 printk( "Int. Condition = 0x%02x\n",
1507 inb( port_base + Interrupt_Cond ) );
1508 }
1509 printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) );
1510 if (chip == tmc18c50 || chip == tmc18c30)
1511 printk( "Configuration 2 = 0x%02x\n",
1512 inb( port_base + Configuration2 ) );
1513}
1514#endif
1515
1516static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt)
1517{
1518#if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
1519 printk( "scsi: <fdomain> abort " );
1520#endif
1521
1522 if (!in_command) {
1523#if EVERY_ACCESS || ERRORS_ONLY
1524 printk( " (not in command)\n" );
1525#endif
1526 return FAILED;
1527 } else printk( "\n" );
1528
1529#if DEBUG_ABORT
1530 print_info( SCpnt );
1531#endif
1532
1533 fdomain_make_bus_idle();
1534 current_SC->SCp.phase |= aborted;
1535 current_SC->result = DID_ABORT << 16;
1536
1537 /* Aborts are not done well. . . */
1538 my_done(DID_ABORT << 16);
1539 return SUCCESS;
1540}
1541
1542int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt)
1543{
68b3aa7c
JG		 1544 unsigned long flags;
1545
1546 local_irq_save(flags);
1547
1da177e4
LT		 1548 outb(1, port_base + SCSI_Cntl);
1549 do_pause( 2 );
1550 outb(0, port_base + SCSI_Cntl);
1551 do_pause( 115 );
1552 outb(0, port_base + SCSI_Mode_Cntl);
1553 outb(PARITY_MASK, port_base + TMC_Cntl);
68b3aa7c
JG		 1554
1555 local_irq_restore(flags);
1da177e4
LT		 1556 return SUCCESS;
1557}
1558
1559static int fdomain_16x0_biosparam(struct scsi_device *sdev,
1560 struct block_device *bdev,
1561 sector_t capacity, int *info_array)
1562{
1563 int drive;
1564 int size = capacity;
1565 unsigned long offset;
1566 struct drive_info {
1567 unsigned short cylinders;
1568 unsigned char heads;
1569 unsigned char sectors;
1570 } i;
1571
1572 /* NOTES:
1573 The RAM area starts at 0x1f00 from the bios_base address.
1574
1575 For BIOS Version 2.0:
1576
1577 The drive parameter table seems to start at 0x1f30.
1578 The first byte's purpose is not known.
1579 Next is the cylinder, head, and sector information.
1580 The last 4 bytes appear to be the drive's size in sectors.
1581 The other bytes in the drive parameter table are unknown.
1582 If anyone figures them out, please send me mail, and I will
1583 update these notes.
1584
1585 Tape drives do not get placed in this table.
1586
1587 There is another table at 0x1fea:
1588 If the byte is 0x01, then the SCSI ID is not in use.
1589 If the byte is 0x18 or 0x48, then the SCSI ID is in use,
1590 although tapes don't seem to be in this table. I haven't
1591 seen any other numbers (in a limited sample).
1592
1593 0x1f2d is a drive count (i.e., not including tapes)
1594
1595 The table at 0x1fcc are I/O ports addresses for the various
1596 operations. I calculate these by hand in this driver code.
1597
1598
1599
1600 For the ISA-200S version of BIOS Version 2.0:
1601
1602 The drive parameter table starts at 0x1f33.
1603
1604 WARNING: Assume that the table entry is 25 bytes long. Someone needs
1605 to check this for the Quantum ISA-200S card.
1606
1607
1608
1609 For BIOS Version 3.2:
1610
1611 The drive parameter table starts at 0x1f70. Each entry is
1612 0x0a bytes long. Heads are one less than we need to report.
1613 */
1614
1615 if (MAJOR(bdev->bd_dev) != SCSI_DISK0_MAJOR) {
1616 printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks");
1617 return 0;
1618 }
1619 drive = MINOR(bdev->bd_dev) >> 4;
1620
1621 if (bios_major == 2) {
1622 switch (Quantum) {
1623 case 2: /* ISA_200S */
1624 /* The value of 25 has never been verified.
1625 It should probably be 15. */
1626 offset = 0x1f33 + drive * 25;
1627 break;
1628 case 3: /* ISA_250MG */
1629 offset = 0x1f36 + drive * 15;
1630 break;
1631 case 4: /* ISA_200S (another one) */
1632 offset = 0x1f34 + drive * 15;
1633 break;
1634 default:
1635 offset = 0x1f31 + drive * 25;
1636 break;
1637 }
1638 memcpy_fromio( &i, bios_mem + offset, sizeof( struct drive_info ) );
1639 info_array[0] = i.heads;
1640 info_array[1] = i.sectors;
1641 info_array[2] = i.cylinders;
1642 } else if (bios_major == 3
1643 && bios_minor >= 0
1644 && bios_minor < 4) { /* 3.0 and 3.2 BIOS */
1645 memcpy_fromio( &i, bios_mem + 0x1f71 + drive * 10,
1646 sizeof( struct drive_info ) );
1647 info_array[0] = i.heads + 1;
1648 info_array[1] = i.sectors;
1649 info_array[2] = i.cylinders;
1650 } else { /* 3.4 BIOS (and up?) */
1651 /* This algorithm was provided by Future Domain (much thanks!). */
1652 unsigned char *p = scsi_bios_ptable(bdev);
1653
1654 if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */
1655 && p[4]) { /* Partition type */
1656
1657 /* The partition table layout is as follows:
1658
1659 Start: 0x1b3h
1660 Offset: 0 = partition status
1661 1 = starting head
1662 2 = starting sector and cylinder (word, encoded)
1663 4 = partition type
1664 5 = ending head
1665 6 = ending sector and cylinder (word, encoded)
1666 8 = starting absolute sector (double word)
1667 c = number of sectors (double word)
1668 Signature: 0x1fe = 0x55aa
1669
1670 So, this algorithm assumes:
1671 1) the first partition table is in use,
1672 2) the data in the first entry is correct, and
1673 3) partitions never divide cylinders
1674
1675 Note that (1) may be FALSE for NetBSD (and other BSD flavors),
1676 as well as for Linux. Note also, that Linux doesn't pay any
1677 attention to the fields that are used by this algorithm -- it
1678 only uses the absolute sector data. Recent versions of Linux's
1679 fdisk(1) will fill this data in correctly, and forthcoming
1680 versions will check for consistency.
1681
1682 Checking for a non-zero partition type is not part of the
1683 Future Domain algorithm, but it seemed to be a reasonable thing
1684 to do, especially in the Linux and BSD worlds. */
1685
1686 info_array[0] = p[5] + 1; /* heads */
1687 info_array[1] = p[6] & 0x3f; /* sectors */
1688 } else {
1689
1690 /* Note that this new method guarantees that there will always be
1691 less than 1024 cylinders on a platter. This is good for drives
1692 up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
1693
1694 if ((unsigned int)size >= 0x7e0000U) {
1695 info_array[0] = 0xff; /* heads = 255 */
1696 info_array[1] = 0x3f; /* sectors = 63 */
1697 } else if ((unsigned int)size >= 0x200000U) {
1698 info_array[0] = 0x80; /* heads = 128 */
1699 info_array[1] = 0x3f; /* sectors = 63 */
1700 } else {
1701 info_array[0] = 0x40; /* heads = 64 */
1702 info_array[1] = 0x20; /* sectors = 32 */
1703 }
1704 }
1705 /* For both methods, compute the cylinders */
1706 info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] );
1707 kfree(p);
1708 }
1709
1710 return 0;
1711}
1712
1713static int fdomain_16x0_release(struct Scsi_Host *shpnt)
1714{
1715 if (shpnt->irq)
1716 free_irq(shpnt->irq, shpnt);
1717 if (shpnt->io_port && shpnt->n_io_port)
1718 release_region(shpnt->io_port, shpnt->n_io_port);
1719 return 0;
1720}
1721
1722struct scsi_host_template fdomain_driver_template = {
1723 .module = THIS_MODULE,
1724 .name = "fdomain",
1725 .proc_name = "fdomain",
1726 .detect = fdomain_16x0_detect,
1727 .info = fdomain_16x0_info,
1728 .queuecommand = fdomain_16x0_queue,
1729 .eh_abort_handler = fdomain_16x0_abort,
1730 .eh_bus_reset_handler = fdomain_16x0_bus_reset,
1731 .bios_param = fdomain_16x0_biosparam,
1732 .release = fdomain_16x0_release,
1733 .can_queue = 1,
1734 .this_id = 6,
1735 .sg_tablesize = 64,
1736 .cmd_per_lun = 1,
1737 .use_clustering = DISABLE_CLUSTERING,
1738};
1739
1740#ifndef PCMCIA
1741#define driver_template fdomain_driver_template
1742#include "scsi_module.c"
1743#endif
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