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@lxorguk.ukuu.org.uk>
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
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.
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.
22 **************************************************************************
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
29 TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70
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]
36 LILO/INSMOD command-line options:
37 fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]
43 The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it.
44 Use the aic7xxx driver for this board.
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.
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
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.
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
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.
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
98 Version Version Date Support/Notes
100 0.0 3 May 1992 V2.0 BIOS; 1800 chip
102 0.98.6 3.1 27 Nov 1992
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)
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
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
137 "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation,
140 "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain
141 Corporation, January 1992.
143 "LXT SCSI Products: Specifications and OEM Technical Manual (Revision
144 B/September 1991)", Maxtor Corporation, 1991.
146 "7213S product Manual (Revision P3)", Maxtor Corporation, 1992.
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)
152 Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric
153 Youngdale (ericy@cais.com), 1992.
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.)
159 Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page
160 60 (2.39: Disk Partition Table Layout).
162 "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page
169 The Maxtor manuals were free. Maxtor telephone technical support is
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 publicly 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 :-).
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
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).
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.
200 Thanks to Dave Newman (dnewman@crl.com) for providing initial patches for
201 the version 3.4 BIOS.
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.
207 Thanks to Eric Kasten (tigger@petroglyph.cl.msu.edu) for providing the
208 patch for the version 3.5 BIOS.
210 Thanks for Stephen Henson (shenson@nyx10.cs.du.edu) for providing the
211 patch for the Quantum ISA-200S SCSI adapter.
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.
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.
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
227 Thanks to Tom Cavin (tec@usa1.com) for preliminary command-line option
230 New PCI detection code written by Martin Mares <mj@atrey.karlin.mff.cuni.cz>
232 Insmod parameter code based on patches from Daniel Graham
233 <graham@balance.uoregon.edu>.
235 All of the alpha testers deserve much thanks.
239 NOTES ON USER DEFINABLE OPTIONS:
241 DEBUG: This turns on the printing of various debug information.
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.
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.
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.
267 **************************************************************************/
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 <linux/io.h>
282 #include <linux/slab.h>
283 #include <scsi/scsicam.h>
285 #include <asm/system.h>
287 #include <scsi/scsi.h>
288 #include <scsi/scsi_cmnd.h>
289 #include <scsi/scsi_device.h>
290 #include <scsi/scsi_host.h>
291 #include <scsi/scsi_ioctl.h>
295 MODULE_AUTHOR("Rickard E. Faith");
296 MODULE_DESCRIPTION("Future domain SCSI driver");
297 MODULE_LICENSE("GPL");
301 #define VERSION "$Revision: 5.51 $"
303 /* START OF USER DEFINABLE OPTIONS */
305 #define DEBUG 0 /* Enable debugging output */
306 #define ENABLE_PARITY 1 /* Enable SCSI Parity */
307 #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */
309 /* END OF USER DEFINABLE OPTIONS */
312 #define EVERY_ACCESS 0 /* Write a line on every scsi access */
313 #define ERRORS_ONLY 1 /* Only write a line if there is an error */
314 #define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */
315 #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */
316 #define DEBUG_ABORT 1 /* Debug abort() routine */
317 #define DEBUG_RESET 1 /* Debug reset() routine */
318 #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */
320 #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
321 #define ERRORS_ONLY 0
322 #define DEBUG_DETECT 0
323 #define DEBUG_MESSAGES 0
324 #define DEBUG_ABORT 0
325 #define DEBUG_RESET 0
329 /* Errors are reported on the line, so we don't need to report them again */
332 #define ERRORS_ONLY 0
336 #define PARITY_MASK 0x08
338 #define PARITY_MASK 0x00
349 in_arbitration = 0x02,
361 FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
362 Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
367 Interrupt_Status = 9,
369 Configuration2 = 11, /* tmc18c50/tmc18c30 only */
380 Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
382 IO_Control = 11, /* tmc18c30 only */
386 /* .bss will zero all the static variables below */
387 static int port_base;
388 static unsigned long bios_base;
389 static void __iomem * bios_mem;
390 static int bios_major;
391 static int bios_minor;
394 static struct pci_dev *PCI_dev;
396 static int Quantum; /* Quantum board variant */
397 static int interrupt_level;
398 static volatile int in_command;
399 static struct scsi_cmnd *current_SC;
400 static enum chip_type chip = unknown;
401 static int adapter_mask;
403 static int setup_called;
406 static volatile int in_interrupt_flag;
409 static int FIFO_Size = 0x2000; /* 8k FIFO for
410 pre-tmc18c30 chips */
412 static irqreturn_t do_fdomain_16x0_intr( int irq, void *dev_id );
413 /* Allow insmod parameters to be like LILO parameters. For example:
414 insmod fdomain fdomain=0x140,11 */
415 static char * fdomain = NULL;
416 module_param(fdomain, charp, 0);
420 static unsigned long addresses[] = {
425 0xcc000, /* Extra addresses for PCI boards */
429 #define ADDRESS_COUNT ARRAY_SIZE(addresses)
431 static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
432 #define PORT_COUNT ARRAY_SIZE(ports)
434 static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
440 READ THIS BEFORE YOU ADD A SIGNATURE!
442 READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME!
444 READ EVERY WORD, ESPECIALLY THE WORD *NOT*
446 This driver works *ONLY* for Future Domain cards using the TMC-1800,
447 TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670,
448 and 1680. These are all 16-bit cards.
450 The following BIOS signature signatures are for boards which do *NOT*
451 work with this driver (these TMC-8xx and TMC-9xx boards may work with the
454 FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88
455 FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89
456 FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89
457 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90
458 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90
459 FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90
460 FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92
462 (The cards which do *NOT* work are all 8-bit cards -- although some of
463 them have a 16-bit form-factor, the upper 8-bits are used only for IRQs
464 and are *NOT* used for data. You can tell the difference by following
465 the tracings on the circuit board -- if only the IRQ lines are involved,
466 you have a "8-bit" card, and should *NOT* use this driver.)
472 static struct signature {
473 const char *signature;
476 int major_bios_version;
477 int minor_bios_version;
478 int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */
481 /* 123456789012345678901234567890123456789012345678901234567890 */
482 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 },
483 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 },
484 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 },
485 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 },
486 { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 },
487 { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 },
488 { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 },
489 { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 },
490 { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 },
491 { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 },
492 { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 },
493 { "IBM F1 P264/32", 5, 14, 3, -1, 1 },
494 /* This next signature may not be a 3.5 bios */
495 { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 },
496 { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 },
497 { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 },
498 { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 },
499 { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 },
500 { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 },
502 /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE
503 Also, fix the disk geometry code for your signature and send your
504 changes for faith@cs.unc.edu. Above all, do *NOT* change any old
507 Note that the last line will match a "generic" 18XX bios. Because
508 Future Domain has changed the host SCSI ID and/or the location of the
509 geometry information in the on-board RAM area for each of the first
510 three BIOS's, it is still important to enter a fully qualified
511 signature in the table for any new BIOS's (after the host SCSI ID and
512 geometry location are verified). */
515 #define SIGNATURE_COUNT ARRAY_SIZE(signatures)
519 static void print_banner( struct Scsi_Host *shpnt )
521 if (!shpnt) return; /* This won't ever happen */
523 if (bios_major < 0 && bios_minor < 0) {
524 printk(KERN_INFO "scsi%d: <fdomain> No BIOS; using scsi id %d\n",
525 shpnt->host_no, shpnt->this_id);
527 printk(KERN_INFO "scsi%d: <fdomain> BIOS version ", shpnt->host_no);
529 if (bios_major >= 0) printk("%d.", bios_major);
532 if (bios_minor >= 0) printk("%d", bios_minor);
535 printk( " at 0x%lx using scsi id %d\n",
536 bios_base, shpnt->this_id );
539 /* If this driver works for later FD PCI
540 boards, we will have to modify banner
541 for additional PCI cards, but for now if
542 it's PCI it's a TMC-3260 - JTM */
543 printk(KERN_INFO "scsi%d: <fdomain> %s chip at 0x%x irq ",
545 chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")),
549 printk("%d", interrupt_level);
556 int fdomain_setup(char *str)
560 (void)get_options(str, ARRAY_SIZE(ints), ints);
562 if (setup_called++ || ints[0] < 2 || ints[0] > 3) {
563 printk(KERN_INFO "scsi: <fdomain> Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n");
564 printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n");
568 port_base = ints[0] >= 1 ? ints[1] : 0;
569 interrupt_level = ints[0] >= 2 ? ints[2] : 0;
570 this_id = ints[0] >= 3 ? ints[3] : 0;
572 bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */
577 __setup("fdomain=", fdomain_setup);
580 static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */
585 static inline void fdomain_make_bus_idle( void )
587 outb(0, port_base + SCSI_Cntl);
588 outb(0, port_base + SCSI_Mode_Cntl);
589 if (chip == tmc18c50 || chip == tmc18c30)
590 outb(0x21 | PARITY_MASK, port_base + TMC_Cntl); /* Clear forced intr. */
592 outb(0x01 | PARITY_MASK, port_base + TMC_Cntl);
595 static int fdomain_is_valid_port( int port )
599 inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) );
602 /* The MCA ID is a unique id for each MCA compatible board. We
603 are using ISA boards, but Future Domain provides the MCA ID
604 anyway. We can use this ID to ensure that this is a Future
605 Domain TMC-1660/TMC-1680.
608 if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */
609 if (inb( port + LSB_ID_Code ) != 0x27) return 0;
610 if (inb( port + MSB_ID_Code ) != 0x61) return 0;
612 } else { /* test for 0xe960 id */
613 if (inb( port + MSB_ID_Code ) != 0x60) return 0;
616 /* Try to toggle 32-bit mode. This only
617 works on an 18c30 chip. (User reports
618 say this works, so we should switch to
619 it in the near future.) */
621 outb( 0x80, port + IO_Control );
622 if ((inb( port + Configuration2 ) & 0x80) == 0x80) {
623 outb( 0x00, port + IO_Control );
624 if ((inb( port + Configuration2 ) & 0x80) == 0x00) {
626 FIFO_Size = 0x800; /* 2k FIFO */
629 /* If that failed, we are an 18c50. */
635 static int fdomain_test_loopback( void )
640 for (i = 0; i < 255; i++) {
641 outb( i, port_base + Write_Loopback );
642 result = inb( port_base + Read_Loopback );
651 /* fdomain_get_irq assumes that we have a valid MCA ID for a
652 TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the
653 bios_base matches these ports. If someone was unlucky enough to have
654 purchased more than one Future Domain board, then they will have to
655 modify this code, as we only detect one board here. [The one with the
658 Note that this routine is only used for systems without a PCI BIOS32
659 (e.g., ISA bus). For PCI bus systems, this routine will likely fail
660 unless one of the IRQs listed in the ints array is used by the board.
661 Sometimes it is possible to use the computer's BIOS setup screen to
662 configure a PCI system so that one of these IRQs will be used by the
663 Future Domain card. */
665 static int fdomain_get_irq( int base )
667 int options = inb(base + Configuration1);
670 printk("scsi: <fdomain> Options = %x\n", options);
673 /* Check for board with lowest bios_base --
674 this isn't valid for the 18c30 or for
675 boards on the PCI bus, so just assume we
676 have the right board. */
678 if (chip != tmc18c30 && !PCI_bus && addresses[(options & 0xc0) >> 6 ] != bios_base)
680 return ints[(options & 0x0e) >> 1];
683 static int fdomain_isa_detect( int *irq, int *iobase )
686 int base = 0xdeadbeef;
690 printk( "scsi: <fdomain> fdomain_isa_detect:" );
693 for (i = 0; i < ADDRESS_COUNT; i++) {
694 void __iomem *p = ioremap(addresses[i], 0x2000);
698 printk( " %lx(%lx),", addresses[i], bios_base );
700 for (j = 0; j < SIGNATURE_COUNT; j++) {
701 if (check_signature(p + signatures[j].sig_offset,
702 signatures[j].signature,
703 signatures[j].sig_length )) {
704 bios_major = signatures[j].major_bios_version;
705 bios_minor = signatures[j].minor_bios_version;
706 PCI_bus = (signatures[j].flag == 1);
707 Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0;
708 bios_base = addresses[i];
717 if (bios_major == 2) {
718 /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM.
719 Assuming the ROM is enabled (otherwise we wouldn't have been
720 able to read the ROM signature :-), then the ROM sets up the
721 RAM area with some magic numbers, such as a list of port
722 base addresses and a list of the disk "geometry" reported to
723 DOS (this geometry has nothing to do with physical geometry).
727 case 2: /* ISA_200S */
728 case 3: /* ISA_250MG */
729 base = readb(bios_mem + 0x1fa2) + (readb(bios_mem + 0x1fa3) << 8);
731 case 4: /* ISA_200S (another one) */
732 base = readb(bios_mem + 0x1fa3) + (readb(bios_mem + 0x1fa4) << 8);
735 base = readb(bios_mem + 0x1fcc) + (readb(bios_mem + 0x1fcd) << 8);
740 printk( " %x,", base );
743 for (i = 0; i < PORT_COUNT; i++) {
744 if (base == ports[i]) {
745 if (!request_region(base, 0x10, "fdomain"))
747 if (!fdomain_is_valid_port(base)) {
748 release_region(base, 0x10);
751 *irq = fdomain_get_irq( base );
757 /* This is a bad sign. It usually means that someone patched the
758 BIOS signature list (the signatures variable) to contain a BIOS
759 signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */
762 printk( " RAM FAILED, " );
766 /* Anyway, the alternative to finding the address in the RAM is to just
767 search through every possible port address for one that is attached
768 to the Future Domain card. Don't panic, though, about reading all
769 these random port addresses -- there are rumors that the Future
770 Domain BIOS does something very similar.
772 Do not, however, check ports which the kernel knows are being used by
775 for (i = 0; i < PORT_COUNT; i++) {
777 if (!request_region(base, 0x10, "fdomain")) {
779 printk( " (%x inuse),", base );
784 printk( " %x,", base );
786 flag = fdomain_is_valid_port(base);
789 release_region(base, 0x10);
793 if (flag) printk( " SUCCESS\n" );
794 else printk( " FAILURE\n" );
797 if (!flag) return 0; /* iobase not found */
799 *irq = fdomain_get_irq( base );
802 return 1; /* success */
807 static int fdomain_isa_detect( int *irq, int *iobase )
819 /* PCI detection function: int fdomain_pci_bios_detect(int* irq, int*
820 iobase) This function gets the Interrupt Level and I/O base address from
821 the PCI configuration registers. */
824 static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev )
826 unsigned int pci_irq; /* PCI interrupt line */
827 unsigned long pci_base; /* PCI I/O base address */
828 struct pci_dev *pdev = NULL;
831 /* Tell how to print a list of the known PCI devices from bios32 and
832 list vendor and device IDs being used if in debug mode. */
834 printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" );
835 printk( "scsi: <fdomain> TMC-3260 detect:"
836 " Using Vendor ID: 0x%x and Device ID: 0x%x\n",
838 PCI_DEVICE_ID_FD_36C70 );
841 if ((pdev = pci_get_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL)
843 if (pci_enable_device(pdev))
847 printk( "scsi: <fdomain> TMC-3260 detect:"
848 " PCI bus %u, device %u, function %u\n",
850 PCI_SLOT(pdev->devfn),
851 PCI_FUNC(pdev->devfn));
854 /* We now have the appropriate device function for the FD board so we
855 just read the PCI config info from the registers. */
857 pci_base = pci_resource_start(pdev, 0);
860 if (!request_region( pci_base, 0x10, "fdomain" ))
863 /* Now we have the I/O base address and interrupt from the PCI
864 configuration registers. */
871 printk( "scsi: <fdomain> TMC-3260 detect:"
872 " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base );
875 if (!fdomain_is_valid_port(pci_base)) {
876 printk(KERN_ERR "scsi: <fdomain> PCI card detected, but driver not loaded (invalid port)\n" );
877 release_region(pci_base, 0x10);
881 /* Fill in a few global variables. Ugh. */
882 bios_major = bios_minor = -1;
896 struct Scsi_Host *__fdomain_16x0_detect(struct scsi_host_template *tpnt )
899 struct Scsi_Host *shpnt;
900 struct pci_dev *pdev = NULL;
904 printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n",
905 port_base, interrupt_level );
907 if (!request_region(port_base, 0x10, "fdomain")) {
908 printk( "scsi: <fdomain> port 0x%x is busy\n", port_base );
909 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
912 if (!fdomain_is_valid_port( port_base )) {
913 printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n",
915 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
916 release_region(port_base, 0x10);
923 /* Try PCI detection first */
924 flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev );
927 /* Then try ISA bus detection */
928 flag = fdomain_isa_detect( &interrupt_level, &port_base );
931 printk( "scsi: <fdomain> Detection failed (no card)\n" );
937 fdomain_16x0_bus_reset(NULL);
939 if (fdomain_test_loopback()) {
940 printk(KERN_ERR "scsi: <fdomain> Detection failed (loopback test failed at port base 0x%x)\n", port_base);
942 printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n");
948 tpnt->this_id = (this_id & 0x07);
949 adapter_mask = (1 << tpnt->this_id);
951 if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) {
960 /* Print out a banner here in case we can't
963 shpnt = scsi_register( tpnt, 0 );
965 release_region(port_base, 0x10);
968 shpnt->irq = interrupt_level;
969 shpnt->io_port = port_base;
970 shpnt->n_io_port = 0x10;
971 print_banner( shpnt );
973 /* Log IRQ with kernel */
974 if (!interrupt_level) {
975 printk(KERN_ERR "scsi: <fdomain> Card Detected, but driver not loaded (no IRQ)\n" );
978 /* Register the IRQ with the kernel */
980 retcode = request_irq( interrupt_level,
981 do_fdomain_16x0_intr, pdev?IRQF_SHARED:0, "fdomain", shpnt);
984 if (retcode == -EINVAL) {
985 printk(KERN_ERR "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level );
986 printk(KERN_ERR " This shouldn't happen!\n" );
987 printk(KERN_ERR " Send mail to faith@acm.org\n" );
988 } else if (retcode == -EBUSY) {
989 printk(KERN_ERR "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level );
990 printk(KERN_ERR " Please use another IRQ!\n" );
992 printk(KERN_ERR "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level );
993 printk(KERN_ERR " This shouldn't happen!\n" );
994 printk(KERN_ERR " Send mail to faith@acm.org\n" );
996 printk(KERN_ERR "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" );
1003 release_region(port_base, 0x10);
1007 static int fdomain_16x0_detect(struct scsi_host_template *tpnt)
1010 fdomain_setup(fdomain);
1011 return (__fdomain_16x0_detect(tpnt) != NULL);
1014 static const char *fdomain_16x0_info( struct Scsi_Host *ignore )
1016 static char buffer[128];
1019 strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" );
1020 if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */
1021 strcat( buffer, strchr( VERSION, ':' ) + 1 );
1022 pt = strrchr( buffer, '$') - 1;
1023 if (!pt) /* Stripped RCS Revision string? */
1024 pt = buffer + strlen( buffer ) - 1;
1028 } else { /* Assume VERSION is a number */
1029 strcat( buffer, " " VERSION );
1036 static int fdomain_arbitrate( void )
1039 unsigned long timeout;
1042 printk( "fdomain_arbitrate()\n" );
1045 outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */
1046 outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */
1047 outb(0x04 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */
1051 status = inb(port_base + TMC_Status); /* Read adapter status */
1052 if (status & 0x02) /* Arbitration complete */
1054 mdelay(1); /* Wait one millisecond */
1055 } while (--timeout);
1058 fdomain_make_bus_idle();
1061 printk( "Arbitration failed, status = %x\n", status );
1064 printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status );
1070 static int fdomain_select( int target )
1073 unsigned long timeout;
1075 static int flag = 0;
1078 outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */
1079 outb(adapter_mask | (1 << target), port_base + SCSI_Data_NoACK);
1081 /* Stop arbitration and enable parity */
1082 outb(PARITY_MASK, port_base + TMC_Cntl);
1084 timeout = 350; /* 350 msec */
1087 status = inb(port_base + SCSI_Status); /* Read adapter status */
1088 if (status & 1) { /* Busy asserted */
1089 /* Enable SCSI Bus (on error, should make bus idle with 0) */
1090 outb(0x80, port_base + SCSI_Cntl);
1093 mdelay(1); /* wait one msec */
1094 } while (--timeout);
1096 fdomain_make_bus_idle();
1098 if (!target) printk( "Selection failed\n" );
1102 if (!flag) /* Skip first failure for all chips. */
1105 printk( "scsi: <fdomain> Selection failed\n" );
1111 static void my_done(int error)
1115 outb(0x00, port_base + Interrupt_Cntl);
1116 fdomain_make_bus_idle();
1117 current_SC->result = error;
1118 if (current_SC->scsi_done)
1119 current_SC->scsi_done( current_SC );
1120 else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" );
1122 panic( "scsi: <fdomain> my_done() called outside of command\n" );
1125 in_interrupt_flag = 0;
1129 static irqreturn_t do_fdomain_16x0_intr(int irq, void *dev_id)
1131 unsigned long flags;
1134 unsigned data_count;
1136 /* The fdomain_16x0_intr is only called via
1137 the interrupt handler. The goal of the
1138 sti() here is to allow other
1139 interruptions while this routine is
1142 /* Check for other IRQ sources */
1143 if ((inb(port_base + TMC_Status) & 0x01) == 0)
1147 outb(0x00, port_base + Interrupt_Cntl);
1149 /* We usually have one spurious interrupt after each command. Ignore it. */
1150 if (!in_command || !current_SC) { /* Spurious interrupt */
1152 printk( "Spurious interrupt, in_command = %d, current_SC = %x\n",
1153 in_command, current_SC );
1158 /* Abort calls my_done, so we do nothing here. */
1159 if (current_SC->SCp.phase & aborted) {
1161 printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" );
1164 return IRQ_HANDLED; */
1168 ++in_interrupt_flag;
1171 if (current_SC->SCp.phase & in_arbitration) {
1172 status = inb(port_base + TMC_Status); /* Read adapter status */
1173 if (!(status & 0x02)) {
1175 printk( " AFAIL " );
1177 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1178 my_done( DID_BUS_BUSY << 16 );
1179 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1182 current_SC->SCp.phase = in_selection;
1184 outb(0x40 | FIFO_COUNT, port_base + Interrupt_Cntl);
1186 outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */
1187 outb(adapter_mask | (1 << scmd_id(current_SC)), port_base + SCSI_Data_NoACK);
1189 /* Stop arbitration and enable parity */
1190 outb(0x10 | PARITY_MASK, port_base + TMC_Cntl);
1192 in_interrupt_flag = 0;
1195 } else if (current_SC->SCp.phase & in_selection) {
1196 status = inb(port_base + SCSI_Status);
1197 if (!(status & 0x01)) {
1198 /* Try again, for slow devices */
1199 if (fdomain_select( scmd_id(current_SC) )) {
1201 printk( " SFAIL " );
1203 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1204 my_done( DID_NO_CONNECT << 16 );
1205 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1209 printk( " AltSel " );
1211 /* Stop arbitration and enable parity */
1212 outb(0x10 | PARITY_MASK, port_base + TMC_Cntl);
1215 current_SC->SCp.phase = in_other;
1216 outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl);
1217 outb(0x80, port_base + SCSI_Cntl);
1219 in_interrupt_flag = 0;
1224 /* current_SC->SCp.phase == in_other: this is the body of the routine */
1226 status = inb(port_base + SCSI_Status);
1228 if (status & 0x10) { /* REQ */
1230 switch (status & 0x0e) {
1232 case 0x08: /* COMMAND OUT */
1233 outb(current_SC->cmnd[current_SC->SCp.sent_command++],
1234 port_base + Write_SCSI_Data);
1236 printk( "CMD = %x,",
1237 current_SC->cmnd[ current_SC->SCp.sent_command - 1] );
1240 case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
1241 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
1242 current_SC->SCp.have_data_in = -1;
1243 outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl);
1246 case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
1247 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
1248 current_SC->SCp.have_data_in = 1;
1249 outb(0x90 | PARITY_MASK, port_base + TMC_Cntl);
1252 case 0x0c: /* STATUS IN */
1253 current_SC->SCp.Status = inb(port_base + Read_SCSI_Data);
1255 printk( "Status = %x, ", current_SC->SCp.Status );
1258 if (current_SC->SCp.Status
1259 && current_SC->SCp.Status != 2
1260 && current_SC->SCp.Status != 8) {
1261 printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n",
1262 current_SC->device->id,
1263 current_SC->cmnd[0],
1264 current_SC->SCp.Status );
1268 case 0x0a: /* MESSAGE OUT */
1269 outb(MESSAGE_REJECT, port_base + Write_SCSI_Data); /* Reject */
1271 case 0x0e: /* MESSAGE IN */
1272 current_SC->SCp.Message = inb(port_base + Read_SCSI_Data);
1274 printk( "Message = %x, ", current_SC->SCp.Message );
1276 if (!current_SC->SCp.Message) ++done;
1277 #if DEBUG_MESSAGES || EVERY_ACCESS
1278 if (current_SC->SCp.Message) {
1279 printk( "scsi: <fdomain> message = %x\n",
1280 current_SC->SCp.Message );
1287 if (chip == tmc1800 && !current_SC->SCp.have_data_in
1288 && (current_SC->SCp.sent_command >= current_SC->cmd_len)) {
1290 if(current_SC->sc_data_direction == DMA_TO_DEVICE)
1292 current_SC->SCp.have_data_in = -1;
1293 outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl);
1297 current_SC->SCp.have_data_in = 1;
1298 outb(0x90 | PARITY_MASK, port_base + TMC_Cntl);
1302 if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
1303 while ((data_count = FIFO_Size - inw(port_base + FIFO_Data_Count)) > 512) {
1305 printk( "DC=%d, ", data_count ) ;
1307 if (data_count > current_SC->SCp.this_residual)
1308 data_count = current_SC->SCp.this_residual;
1309 if (data_count > 0) {
1311 printk( "%d OUT, ", data_count );
1313 if (data_count == 1) {
1314 outb(*current_SC->SCp.ptr++, port_base + Write_FIFO);
1315 --current_SC->SCp.this_residual;
1318 outsw(port_base + Write_FIFO, current_SC->SCp.ptr, data_count);
1319 current_SC->SCp.ptr += 2 * data_count;
1320 current_SC->SCp.this_residual -= 2 * data_count;
1323 if (!current_SC->SCp.this_residual) {
1324 if (current_SC->SCp.buffers_residual) {
1325 --current_SC->SCp.buffers_residual;
1326 ++current_SC->SCp.buffer;
1327 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
1328 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1335 if (current_SC->SCp.have_data_in == 1) { /* DATA IN */
1336 while ((data_count = inw(port_base + FIFO_Data_Count)) > 0) {
1338 printk( "DC=%d, ", data_count );
1340 if (data_count > current_SC->SCp.this_residual)
1341 data_count = current_SC->SCp.this_residual;
1344 printk( "%d IN, ", data_count );
1346 if (data_count == 1) {
1347 *current_SC->SCp.ptr++ = inb(port_base + Read_FIFO);
1348 --current_SC->SCp.this_residual;
1350 data_count >>= 1; /* Number of words */
1351 insw(port_base + Read_FIFO, current_SC->SCp.ptr, data_count);
1352 current_SC->SCp.ptr += 2 * data_count;
1353 current_SC->SCp.this_residual -= 2 * data_count;
1356 if (!current_SC->SCp.this_residual
1357 && current_SC->SCp.buffers_residual) {
1358 --current_SC->SCp.buffers_residual;
1359 ++current_SC->SCp.buffer;
1360 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
1361 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1368 printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in );
1372 if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) {
1373 char *buf = scsi_sglist(current_SC);
1374 if ((unsigned char)(*(buf + 2)) & 0x0f) {
1377 unsigned char qualifier;
1379 key = (unsigned char)(*(buf + 2)) & 0x0f;
1380 code = (unsigned char)(*(buf + 12));
1381 qualifier = (unsigned char)(*(buf + 13));
1383 if (key != UNIT_ATTENTION
1384 && !(key == NOT_READY
1386 && (!qualifier || qualifier == 0x02 || qualifier == 0x01))
1387 && !(key == ILLEGAL_REQUEST && (code == 0x25
1391 printk( "scsi: <fdomain> REQUEST SENSE"
1392 " Key = %x, Code = %x, Qualifier = %x\n",
1393 key, code, qualifier );
1398 printk( "BEFORE MY_DONE. . ." );
1400 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1401 my_done( (current_SC->SCp.Status & 0xff)
1402 | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) );
1403 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1405 printk( "RETURNING.\n" );
1409 if (current_SC->SCp.phase & disconnect) {
1410 outb(0xd0 | FIFO_COUNT, port_base + Interrupt_Cntl);
1411 outb(0x00, port_base + SCSI_Cntl);
1413 outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl);
1417 in_interrupt_flag = 0;
1422 static int fdomain_16x0_queue_lck(struct scsi_cmnd *SCpnt,
1423 void (*done)(struct scsi_cmnd *))
1426 panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" );
1429 printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1431 *(unsigned char *)SCpnt->cmnd,
1432 scsi_sg_count(SCpnt),
1433 scsi_bufflen(SCpnt));
1436 fdomain_make_bus_idle();
1438 current_SC = SCpnt; /* Save this for the done function */
1439 current_SC->scsi_done = done;
1441 /* Initialize static data */
1443 if (scsi_sg_count(current_SC)) {
1444 current_SC->SCp.buffer = scsi_sglist(current_SC);
1445 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
1446 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1447 current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1;
1449 current_SC->SCp.ptr = NULL;
1450 current_SC->SCp.this_residual = 0;
1451 current_SC->SCp.buffer = NULL;
1452 current_SC->SCp.buffers_residual = 0;
1455 current_SC->SCp.Status = 0;
1456 current_SC->SCp.Message = 0;
1457 current_SC->SCp.have_data_in = 0;
1458 current_SC->SCp.sent_command = 0;
1459 current_SC->SCp.phase = in_arbitration;
1461 /* Start arbitration */
1462 outb(0x00, port_base + Interrupt_Cntl);
1463 outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */
1464 outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */
1466 outb(0x20, port_base + Interrupt_Cntl);
1467 outb(0x14 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */
1472 static DEF_SCSI_QCMD(fdomain_16x0_queue)
1475 static void print_info(struct scsi_cmnd *SCpnt)
1481 if (!SCpnt || !SCpnt->device || !SCpnt->device->host) {
1482 printk(KERN_WARNING "scsi: <fdomain> Cannot provide detailed information\n");
1486 printk(KERN_INFO "%s\n", fdomain_16x0_info( SCpnt->device->host ) );
1487 print_banner(SCpnt->device->host);
1488 switch (SCpnt->SCp.phase) {
1489 case in_arbitration: printk("arbitration"); break;
1490 case in_selection: printk("selection"); break;
1491 case in_other: printk("other"); break;
1492 default: printk("unknown"); break;
1495 printk( " (%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1498 *(unsigned char *)SCpnt->cmnd,
1499 scsi_sg_count(SCpnt),
1500 scsi_bufflen(SCpnt));
1501 printk( "sent_command = %d, have_data_in = %d, timeout = %d\n",
1502 SCpnt->SCp.sent_command,
1503 SCpnt->SCp.have_data_in,
1506 printk( "in_interrupt_flag = %d\n", in_interrupt_flag );
1509 imr = (inb( 0x0a1 ) << 8) + inb( 0x21 );
1511 irr = inb( 0xa0 ) << 8;
1515 isr = inb( 0xa0 ) << 8;
1519 /* Print out interesting information */
1520 printk( "IMR = 0x%04x", imr );
1521 if (imr & (1 << interrupt_level))
1522 printk( " (masked)" );
1523 printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr );
1525 printk( "SCSI Status = 0x%02x\n", inb(port_base + SCSI_Status));
1526 printk( "TMC Status = 0x%02x", inb(port_base + TMC_Status));
1527 if (inb((port_base + TMC_Status) & 1))
1528 printk( " (interrupt)" );
1530 printk("Interrupt Status = 0x%02x", inb(port_base + Interrupt_Status));
1531 if (inb(port_base + Interrupt_Status) & 0x08)
1532 printk( " (enabled)" );
1534 if (chip == tmc18c50 || chip == tmc18c30) {
1535 printk("FIFO Status = 0x%02x\n", inb(port_base + FIFO_Status));
1536 printk( "Int. Condition = 0x%02x\n",
1537 inb( port_base + Interrupt_Cond ) );
1539 printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) );
1540 if (chip == tmc18c50 || chip == tmc18c30)
1541 printk( "Configuration 2 = 0x%02x\n",
1542 inb( port_base + Configuration2 ) );
1546 static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt)
1548 #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
1549 printk( "scsi: <fdomain> abort " );
1553 #if EVERY_ACCESS || ERRORS_ONLY
1554 printk( " (not in command)\n" );
1557 } else printk( "\n" );
1560 print_info( SCpnt );
1563 fdomain_make_bus_idle();
1564 current_SC->SCp.phase |= aborted;
1565 current_SC->result = DID_ABORT << 16;
1567 /* Aborts are not done well. . . */
1568 my_done(DID_ABORT << 16);
1572 int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt)
1574 unsigned long flags;
1576 local_irq_save(flags);
1578 outb(1, port_base + SCSI_Cntl);
1580 outb(0, port_base + SCSI_Cntl);
1582 outb(0, port_base + SCSI_Mode_Cntl);
1583 outb(PARITY_MASK, port_base + TMC_Cntl);
1585 local_irq_restore(flags);
1589 static int fdomain_16x0_biosparam(struct scsi_device *sdev,
1590 struct block_device *bdev,
1591 sector_t capacity, int *info_array)
1594 int size = capacity;
1595 unsigned long offset;
1597 unsigned short cylinders;
1598 unsigned char heads;
1599 unsigned char sectors;
1603 The RAM area starts at 0x1f00 from the bios_base address.
1605 For BIOS Version 2.0:
1607 The drive parameter table seems to start at 0x1f30.
1608 The first byte's purpose is not known.
1609 Next is the cylinder, head, and sector information.
1610 The last 4 bytes appear to be the drive's size in sectors.
1611 The other bytes in the drive parameter table are unknown.
1612 If anyone figures them out, please send me mail, and I will
1615 Tape drives do not get placed in this table.
1617 There is another table at 0x1fea:
1618 If the byte is 0x01, then the SCSI ID is not in use.
1619 If the byte is 0x18 or 0x48, then the SCSI ID is in use,
1620 although tapes don't seem to be in this table. I haven't
1621 seen any other numbers (in a limited sample).
1623 0x1f2d is a drive count (i.e., not including tapes)
1625 The table at 0x1fcc are I/O ports addresses for the various
1626 operations. I calculate these by hand in this driver code.
1630 For the ISA-200S version of BIOS Version 2.0:
1632 The drive parameter table starts at 0x1f33.
1634 WARNING: Assume that the table entry is 25 bytes long. Someone needs
1635 to check this for the Quantum ISA-200S card.
1639 For BIOS Version 3.2:
1641 The drive parameter table starts at 0x1f70. Each entry is
1642 0x0a bytes long. Heads are one less than we need to report.
1645 if (MAJOR(bdev->bd_dev) != SCSI_DISK0_MAJOR) {
1646 printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks");
1649 drive = MINOR(bdev->bd_dev) >> 4;
1651 if (bios_major == 2) {
1653 case 2: /* ISA_200S */
1654 /* The value of 25 has never been verified.
1655 It should probably be 15. */
1656 offset = 0x1f33 + drive * 25;
1658 case 3: /* ISA_250MG */
1659 offset = 0x1f36 + drive * 15;
1661 case 4: /* ISA_200S (another one) */
1662 offset = 0x1f34 + drive * 15;
1665 offset = 0x1f31 + drive * 25;
1668 memcpy_fromio( &i, bios_mem + offset, sizeof( struct drive_info ) );
1669 info_array[0] = i.heads;
1670 info_array[1] = i.sectors;
1671 info_array[2] = i.cylinders;
1672 } else if (bios_major == 3
1674 && bios_minor < 4) { /* 3.0 and 3.2 BIOS */
1675 memcpy_fromio( &i, bios_mem + 0x1f71 + drive * 10,
1676 sizeof( struct drive_info ) );
1677 info_array[0] = i.heads + 1;
1678 info_array[1] = i.sectors;
1679 info_array[2] = i.cylinders;
1680 } else { /* 3.4 BIOS (and up?) */
1681 /* This algorithm was provided by Future Domain (much thanks!). */
1682 unsigned char *p = scsi_bios_ptable(bdev);
1684 if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */
1685 && p[4]) { /* Partition type */
1687 /* The partition table layout is as follows:
1690 Offset: 0 = partition status
1692 2 = starting sector and cylinder (word, encoded)
1695 6 = ending sector and cylinder (word, encoded)
1696 8 = starting absolute sector (double word)
1697 c = number of sectors (double word)
1698 Signature: 0x1fe = 0x55aa
1700 So, this algorithm assumes:
1701 1) the first partition table is in use,
1702 2) the data in the first entry is correct, and
1703 3) partitions never divide cylinders
1705 Note that (1) may be FALSE for NetBSD (and other BSD flavors),
1706 as well as for Linux. Note also, that Linux doesn't pay any
1707 attention to the fields that are used by this algorithm -- it
1708 only uses the absolute sector data. Recent versions of Linux's
1709 fdisk(1) will fill this data in correctly, and forthcoming
1710 versions will check for consistency.
1712 Checking for a non-zero partition type is not part of the
1713 Future Domain algorithm, but it seemed to be a reasonable thing
1714 to do, especially in the Linux and BSD worlds. */
1716 info_array[0] = p[5] + 1; /* heads */
1717 info_array[1] = p[6] & 0x3f; /* sectors */
1720 /* Note that this new method guarantees that there will always be
1721 less than 1024 cylinders on a platter. This is good for drives
1722 up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
1724 if ((unsigned int)size >= 0x7e0000U) {
1725 info_array[0] = 0xff; /* heads = 255 */
1726 info_array[1] = 0x3f; /* sectors = 63 */
1727 } else if ((unsigned int)size >= 0x200000U) {
1728 info_array[0] = 0x80; /* heads = 128 */
1729 info_array[1] = 0x3f; /* sectors = 63 */
1731 info_array[0] = 0x40; /* heads = 64 */
1732 info_array[1] = 0x20; /* sectors = 32 */
1735 /* For both methods, compute the cylinders */
1736 info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] );
1743 static int fdomain_16x0_release(struct Scsi_Host *shpnt)
1746 free_irq(shpnt->irq, shpnt);
1747 if (shpnt->io_port && shpnt->n_io_port)
1748 release_region(shpnt->io_port, shpnt->n_io_port);
1750 pci_dev_put(PCI_dev);
1754 struct scsi_host_template fdomain_driver_template = {
1755 .module = THIS_MODULE,
1757 .proc_name = "fdomain",
1758 .detect = fdomain_16x0_detect,
1759 .info = fdomain_16x0_info,
1760 .queuecommand = fdomain_16x0_queue,
1761 .eh_abort_handler = fdomain_16x0_abort,
1762 .eh_bus_reset_handler = fdomain_16x0_bus_reset,
1763 .bios_param = fdomain_16x0_biosparam,
1764 .release = fdomain_16x0_release,
1769 .use_clustering = DISABLE_CLUSTERING,
1775 static struct pci_device_id fdomain_pci_tbl[] __devinitdata = {
1776 { PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70,
1777 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1780 MODULE_DEVICE_TABLE(pci, fdomain_pci_tbl);
1782 #define driver_template fdomain_driver_template
1783 #include "scsi_module.c"