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>
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>
294 MODULE_AUTHOR("Rickard E. Faith");
295 MODULE_DESCRIPTION("Future domain SCSI driver");
296 MODULE_LICENSE("GPL");
300 #define VERSION "$Revision: 5.51 $"
302 /* START OF USER DEFINABLE OPTIONS */
304 #define DEBUG 0 /* Enable debugging output */
305 #define ENABLE_PARITY 1 /* Enable SCSI Parity */
306 #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */
308 /* END OF USER DEFINABLE OPTIONS */
311 #define EVERY_ACCESS 0 /* Write a line on every scsi access */
312 #define ERRORS_ONLY 1 /* Only write a line if there is an error */
313 #define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */
314 #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */
315 #define DEBUG_ABORT 1 /* Debug abort() routine */
316 #define DEBUG_RESET 1 /* Debug reset() routine */
317 #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */
319 #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */
320 #define ERRORS_ONLY 0
321 #define DEBUG_DETECT 0
322 #define DEBUG_MESSAGES 0
323 #define DEBUG_ABORT 0
324 #define DEBUG_RESET 0
328 /* Errors are reported on the line, so we don't need to report them again */
331 #define ERRORS_ONLY 0
335 #define PARITY_MASK 0x08
337 #define PARITY_MASK 0x00
348 in_arbitration = 0x02,
360 FIFO_Status = 3, /* tmc18c50/tmc18c30 only */
361 Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */
366 Interrupt_Status = 9,
368 Configuration2 = 11, /* tmc18c50/tmc18c30 only */
379 Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */
381 IO_Control = 11, /* tmc18c30 only */
385 /* .bss will zero all the static variables below */
386 static int port_base;
387 static unsigned long bios_base;
388 static void __iomem * bios_mem;
389 static int bios_major;
390 static int bios_minor;
393 static struct pci_dev *PCI_dev;
395 static int Quantum; /* Quantum board variant */
396 static int interrupt_level;
397 static volatile int in_command;
398 static struct scsi_cmnd *current_SC;
399 static enum chip_type chip = unknown;
400 static int adapter_mask;
402 static int setup_called;
405 static volatile int in_interrupt_flag;
408 static int FIFO_Size = 0x2000; /* 8k FIFO for
409 pre-tmc18c30 chips */
411 static irqreturn_t do_fdomain_16x0_intr( int irq, void *dev_id );
412 /* Allow insmod parameters to be like LILO parameters. For example:
413 insmod fdomain fdomain=0x140,11 */
414 static char * fdomain = NULL;
415 module_param(fdomain, charp, 0);
419 static unsigned long addresses[] = {
424 0xcc000, /* Extra addresses for PCI boards */
428 #define ADDRESS_COUNT ARRAY_SIZE(addresses)
430 static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 };
431 #define PORT_COUNT ARRAY_SIZE(ports)
433 static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 };
439 READ THIS BEFORE YOU ADD A SIGNATURE!
441 READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME!
443 READ EVERY WORD, ESPECIALLY THE WORD *NOT*
445 This driver works *ONLY* for Future Domain cards using the TMC-1800,
446 TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670,
447 and 1680. These are all 16-bit cards.
449 The following BIOS signature signatures are for boards which do *NOT*
450 work with this driver (these TMC-8xx and TMC-9xx boards may work with the
453 FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88
454 FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89
455 FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89
456 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90
457 FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90
458 FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90
459 FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92
461 (The cards which do *NOT* work are all 8-bit cards -- although some of
462 them have a 16-bit form-factor, the upper 8-bits are used only for IRQs
463 and are *NOT* used for data. You can tell the difference by following
464 the tracings on the circuit board -- if only the IRQ lines are involved,
465 you have a "8-bit" card, and should *NOT* use this driver.)
471 static struct signature {
472 const char *signature;
475 int major_bios_version;
476 int minor_bios_version;
477 int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */
480 /* 123456789012345678901234567890123456789012345678901234567890 */
481 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 },
482 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 },
483 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 },
484 { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 },
485 { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 },
486 { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 },
487 { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 },
488 { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 },
489 { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 },
490 { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 },
491 { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 },
492 { "IBM F1 P264/32", 5, 14, 3, -1, 1 },
493 /* This next signature may not be a 3.5 bios */
494 { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 },
495 { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 },
496 { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 },
497 { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 },
498 { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 },
499 { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 },
501 /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE
502 Also, fix the disk geometry code for your signature and send your
503 changes for faith@cs.unc.edu. Above all, do *NOT* change any old
506 Note that the last line will match a "generic" 18XX bios. Because
507 Future Domain has changed the host SCSI ID and/or the location of the
508 geometry information in the on-board RAM area for each of the first
509 three BIOS's, it is still important to enter a fully qualified
510 signature in the table for any new BIOS's (after the host SCSI ID and
511 geometry location are verified). */
514 #define SIGNATURE_COUNT ARRAY_SIZE(signatures)
518 static void print_banner( struct Scsi_Host *shpnt )
520 if (!shpnt) return; /* This won't ever happen */
522 if (bios_major < 0 && bios_minor < 0) {
523 printk(KERN_INFO "scsi%d: <fdomain> No BIOS; using scsi id %d\n",
524 shpnt->host_no, shpnt->this_id);
526 printk(KERN_INFO "scsi%d: <fdomain> BIOS version ", shpnt->host_no);
528 if (bios_major >= 0) printk("%d.", bios_major);
531 if (bios_minor >= 0) printk("%d", bios_minor);
534 printk( " at 0x%lx using scsi id %d\n",
535 bios_base, shpnt->this_id );
538 /* If this driver works for later FD PCI
539 boards, we will have to modify banner
540 for additional PCI cards, but for now if
541 it's PCI it's a TMC-3260 - JTM */
542 printk(KERN_INFO "scsi%d: <fdomain> %s chip at 0x%x irq ",
544 chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")),
548 printk("%d", interrupt_level);
555 int fdomain_setup(char *str)
559 (void)get_options(str, ARRAY_SIZE(ints), ints);
561 if (setup_called++ || ints[0] < 2 || ints[0] > 3) {
562 printk(KERN_INFO "scsi: <fdomain> Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n");
563 printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n");
567 port_base = ints[0] >= 1 ? ints[1] : 0;
568 interrupt_level = ints[0] >= 2 ? ints[2] : 0;
569 this_id = ints[0] >= 3 ? ints[3] : 0;
571 bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */
576 __setup("fdomain=", fdomain_setup);
579 static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */
584 static inline void fdomain_make_bus_idle( void )
586 outb(0, port_base + SCSI_Cntl);
587 outb(0, port_base + SCSI_Mode_Cntl);
588 if (chip == tmc18c50 || chip == tmc18c30)
589 outb(0x21 | PARITY_MASK, port_base + TMC_Cntl); /* Clear forced intr. */
591 outb(0x01 | PARITY_MASK, port_base + TMC_Cntl);
594 static int fdomain_is_valid_port( int port )
598 inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) );
601 /* The MCA ID is a unique id for each MCA compatible board. We
602 are using ISA boards, but Future Domain provides the MCA ID
603 anyway. We can use this ID to ensure that this is a Future
604 Domain TMC-1660/TMC-1680.
607 if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */
608 if (inb( port + LSB_ID_Code ) != 0x27) return 0;
609 if (inb( port + MSB_ID_Code ) != 0x61) return 0;
611 } else { /* test for 0xe960 id */
612 if (inb( port + MSB_ID_Code ) != 0x60) return 0;
615 /* Try to toggle 32-bit mode. This only
616 works on an 18c30 chip. (User reports
617 say this works, so we should switch to
618 it in the near future.) */
620 outb( 0x80, port + IO_Control );
621 if ((inb( port + Configuration2 ) & 0x80) == 0x80) {
622 outb( 0x00, port + IO_Control );
623 if ((inb( port + Configuration2 ) & 0x80) == 0x00) {
625 FIFO_Size = 0x800; /* 2k FIFO */
628 /* If that failed, we are an 18c50. */
634 static int fdomain_test_loopback( void )
639 for (i = 0; i < 255; i++) {
640 outb( i, port_base + Write_Loopback );
641 result = inb( port_base + Read_Loopback );
650 /* fdomain_get_irq assumes that we have a valid MCA ID for a
651 TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the
652 bios_base matches these ports. If someone was unlucky enough to have
653 purchased more than one Future Domain board, then they will have to
654 modify this code, as we only detect one board here. [The one with the
657 Note that this routine is only used for systems without a PCI BIOS32
658 (e.g., ISA bus). For PCI bus systems, this routine will likely fail
659 unless one of the IRQs listed in the ints array is used by the board.
660 Sometimes it is possible to use the computer's BIOS setup screen to
661 configure a PCI system so that one of these IRQs will be used by the
662 Future Domain card. */
664 static int fdomain_get_irq( int base )
666 int options = inb(base + Configuration1);
669 printk("scsi: <fdomain> Options = %x\n", options);
672 /* Check for board with lowest bios_base --
673 this isn't valid for the 18c30 or for
674 boards on the PCI bus, so just assume we
675 have the right board. */
677 if (chip != tmc18c30 && !PCI_bus && addresses[(options & 0xc0) >> 6 ] != bios_base)
679 return ints[(options & 0x0e) >> 1];
682 static int fdomain_isa_detect( int *irq, int *iobase )
685 int base = 0xdeadbeef;
689 printk( "scsi: <fdomain> fdomain_isa_detect:" );
692 for (i = 0; i < ADDRESS_COUNT; i++) {
693 void __iomem *p = ioremap(addresses[i], 0x2000);
697 printk( " %lx(%lx),", addresses[i], bios_base );
699 for (j = 0; j < SIGNATURE_COUNT; j++) {
700 if (check_signature(p + signatures[j].sig_offset,
701 signatures[j].signature,
702 signatures[j].sig_length )) {
703 bios_major = signatures[j].major_bios_version;
704 bios_minor = signatures[j].minor_bios_version;
705 PCI_bus = (signatures[j].flag == 1);
706 Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0;
707 bios_base = addresses[i];
716 if (bios_major == 2) {
717 /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM.
718 Assuming the ROM is enabled (otherwise we wouldn't have been
719 able to read the ROM signature :-), then the ROM sets up the
720 RAM area with some magic numbers, such as a list of port
721 base addresses and a list of the disk "geometry" reported to
722 DOS (this geometry has nothing to do with physical geometry).
726 case 2: /* ISA_200S */
727 case 3: /* ISA_250MG */
728 base = readb(bios_mem + 0x1fa2) + (readb(bios_mem + 0x1fa3) << 8);
730 case 4: /* ISA_200S (another one) */
731 base = readb(bios_mem + 0x1fa3) + (readb(bios_mem + 0x1fa4) << 8);
734 base = readb(bios_mem + 0x1fcc) + (readb(bios_mem + 0x1fcd) << 8);
739 printk( " %x,", base );
742 for (i = 0; i < PORT_COUNT; i++) {
743 if (base == ports[i]) {
744 if (!request_region(base, 0x10, "fdomain"))
746 if (!fdomain_is_valid_port(base)) {
747 release_region(base, 0x10);
750 *irq = fdomain_get_irq( base );
756 /* This is a bad sign. It usually means that someone patched the
757 BIOS signature list (the signatures variable) to contain a BIOS
758 signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */
761 printk( " RAM FAILED, " );
765 /* Anyway, the alternative to finding the address in the RAM is to just
766 search through every possible port address for one that is attached
767 to the Future Domain card. Don't panic, though, about reading all
768 these random port addresses -- there are rumors that the Future
769 Domain BIOS does something very similar.
771 Do not, however, check ports which the kernel knows are being used by
774 for (i = 0; i < PORT_COUNT; i++) {
776 if (!request_region(base, 0x10, "fdomain")) {
778 printk( " (%x inuse),", base );
783 printk( " %x,", base );
785 flag = fdomain_is_valid_port(base);
788 release_region(base, 0x10);
792 if (flag) printk( " SUCCESS\n" );
793 else printk( " FAILURE\n" );
796 if (!flag) return 0; /* iobase not found */
798 *irq = fdomain_get_irq( base );
801 return 1; /* success */
806 static int fdomain_isa_detect( int *irq, int *iobase )
818 /* PCI detection function: int fdomain_pci_bios_detect(int* irq, int*
819 iobase) This function gets the Interrupt Level and I/O base address from
820 the PCI configuration registers. */
823 static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev )
825 unsigned int pci_irq; /* PCI interrupt line */
826 unsigned long pci_base; /* PCI I/O base address */
827 struct pci_dev *pdev = NULL;
830 /* Tell how to print a list of the known PCI devices from bios32 and
831 list vendor and device IDs being used if in debug mode. */
833 printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" );
834 printk( "scsi: <fdomain> TMC-3260 detect:"
835 " Using Vendor ID: 0x%x and Device ID: 0x%x\n",
837 PCI_DEVICE_ID_FD_36C70 );
840 if ((pdev = pci_get_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL)
842 if (pci_enable_device(pdev))
846 printk( "scsi: <fdomain> TMC-3260 detect:"
847 " PCI bus %u, device %u, function %u\n",
849 PCI_SLOT(pdev->devfn),
850 PCI_FUNC(pdev->devfn));
853 /* We now have the appropriate device function for the FD board so we
854 just read the PCI config info from the registers. */
856 pci_base = pci_resource_start(pdev, 0);
859 if (!request_region( pci_base, 0x10, "fdomain" ))
862 /* Now we have the I/O base address and interrupt from the PCI
863 configuration registers. */
870 printk( "scsi: <fdomain> TMC-3260 detect:"
871 " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base );
874 if (!fdomain_is_valid_port(pci_base)) {
875 printk(KERN_ERR "scsi: <fdomain> PCI card detected, but driver not loaded (invalid port)\n" );
876 release_region(pci_base, 0x10);
880 /* Fill in a few global variables. Ugh. */
881 bios_major = bios_minor = -1;
895 struct Scsi_Host *__fdomain_16x0_detect(struct scsi_host_template *tpnt )
898 struct Scsi_Host *shpnt;
899 struct pci_dev *pdev = NULL;
903 printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n",
904 port_base, interrupt_level );
906 if (!request_region(port_base, 0x10, "fdomain")) {
907 printk( "scsi: <fdomain> port 0x%x is busy\n", port_base );
908 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
911 if (!fdomain_is_valid_port( port_base )) {
912 printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n",
914 printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" );
915 release_region(port_base, 0x10);
922 /* Try PCI detection first */
923 flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev );
926 /* Then try ISA bus detection */
927 flag = fdomain_isa_detect( &interrupt_level, &port_base );
930 printk( "scsi: <fdomain> Detection failed (no card)\n" );
936 fdomain_16x0_bus_reset(NULL);
938 if (fdomain_test_loopback()) {
939 printk(KERN_ERR "scsi: <fdomain> Detection failed (loopback test failed at port base 0x%x)\n", port_base);
941 printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n");
947 tpnt->this_id = (this_id & 0x07);
948 adapter_mask = (1 << tpnt->this_id);
950 if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) {
959 /* Print out a banner here in case we can't
962 shpnt = scsi_register( tpnt, 0 );
964 release_region(port_base, 0x10);
967 shpnt->irq = interrupt_level;
968 shpnt->io_port = port_base;
969 shpnt->n_io_port = 0x10;
970 print_banner( shpnt );
972 /* Log IRQ with kernel */
973 if (!interrupt_level) {
974 printk(KERN_ERR "scsi: <fdomain> Card Detected, but driver not loaded (no IRQ)\n" );
977 /* Register the IRQ with the kernel */
979 retcode = request_irq( interrupt_level,
980 do_fdomain_16x0_intr, pdev?IRQF_SHARED:0, "fdomain", shpnt);
983 if (retcode == -EINVAL) {
984 printk(KERN_ERR "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level );
985 printk(KERN_ERR " This shouldn't happen!\n" );
986 printk(KERN_ERR " Send mail to faith@acm.org\n" );
987 } else if (retcode == -EBUSY) {
988 printk(KERN_ERR "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level );
989 printk(KERN_ERR " Please use another IRQ!\n" );
991 printk(KERN_ERR "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level );
992 printk(KERN_ERR " This shouldn't happen!\n" );
993 printk(KERN_ERR " Send mail to faith@acm.org\n" );
995 printk(KERN_ERR "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" );
1002 release_region(port_base, 0x10);
1006 static int fdomain_16x0_detect(struct scsi_host_template *tpnt)
1009 fdomain_setup(fdomain);
1010 return (__fdomain_16x0_detect(tpnt) != NULL);
1013 static const char *fdomain_16x0_info( struct Scsi_Host *ignore )
1015 static char buffer[128];
1018 strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" );
1019 if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */
1020 strcat( buffer, strchr( VERSION, ':' ) + 1 );
1021 pt = strrchr( buffer, '$') - 1;
1022 if (!pt) /* Stripped RCS Revision string? */
1023 pt = buffer + strlen( buffer ) - 1;
1027 } else { /* Assume VERSION is a number */
1028 strcat( buffer, " " VERSION );
1035 static int fdomain_arbitrate( void )
1038 unsigned long timeout;
1041 printk( "fdomain_arbitrate()\n" );
1044 outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */
1045 outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */
1046 outb(0x04 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */
1050 status = inb(port_base + TMC_Status); /* Read adapter status */
1051 if (status & 0x02) /* Arbitration complete */
1053 mdelay(1); /* Wait one millisecond */
1054 } while (--timeout);
1057 fdomain_make_bus_idle();
1060 printk( "Arbitration failed, status = %x\n", status );
1063 printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status );
1069 static int fdomain_select( int target )
1072 unsigned long timeout;
1074 static int flag = 0;
1077 outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */
1078 outb(adapter_mask | (1 << target), port_base + SCSI_Data_NoACK);
1080 /* Stop arbitration and enable parity */
1081 outb(PARITY_MASK, port_base + TMC_Cntl);
1083 timeout = 350; /* 350 msec */
1086 status = inb(port_base + SCSI_Status); /* Read adapter status */
1087 if (status & 1) { /* Busy asserted */
1088 /* Enable SCSI Bus (on error, should make bus idle with 0) */
1089 outb(0x80, port_base + SCSI_Cntl);
1092 mdelay(1); /* wait one msec */
1093 } while (--timeout);
1095 fdomain_make_bus_idle();
1097 if (!target) printk( "Selection failed\n" );
1101 if (!flag) /* Skip first failure for all chips. */
1104 printk( "scsi: <fdomain> Selection failed\n" );
1110 static void my_done(int error)
1114 outb(0x00, port_base + Interrupt_Cntl);
1115 fdomain_make_bus_idle();
1116 current_SC->result = error;
1117 if (current_SC->scsi_done)
1118 current_SC->scsi_done( current_SC );
1119 else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" );
1121 panic( "scsi: <fdomain> my_done() called outside of command\n" );
1124 in_interrupt_flag = 0;
1128 static irqreturn_t do_fdomain_16x0_intr(int irq, void *dev_id)
1130 unsigned long flags;
1133 unsigned data_count;
1135 /* The fdomain_16x0_intr is only called via
1136 the interrupt handler. The goal of the
1137 sti() here is to allow other
1138 interruptions while this routine is
1141 /* Check for other IRQ sources */
1142 if ((inb(port_base + TMC_Status) & 0x01) == 0)
1146 outb(0x00, port_base + Interrupt_Cntl);
1148 /* We usually have one spurious interrupt after each command. Ignore it. */
1149 if (!in_command || !current_SC) { /* Spurious interrupt */
1151 printk( "Spurious interrupt, in_command = %d, current_SC = %x\n",
1152 in_command, current_SC );
1157 /* Abort calls my_done, so we do nothing here. */
1158 if (current_SC->SCp.phase & aborted) {
1160 printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" );
1163 return IRQ_HANDLED; */
1167 ++in_interrupt_flag;
1170 if (current_SC->SCp.phase & in_arbitration) {
1171 status = inb(port_base + TMC_Status); /* Read adapter status */
1172 if (!(status & 0x02)) {
1174 printk( " AFAIL " );
1176 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1177 my_done( DID_BUS_BUSY << 16 );
1178 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1181 current_SC->SCp.phase = in_selection;
1183 outb(0x40 | FIFO_COUNT, port_base + Interrupt_Cntl);
1185 outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */
1186 outb(adapter_mask | (1 << scmd_id(current_SC)), port_base + SCSI_Data_NoACK);
1188 /* Stop arbitration and enable parity */
1189 outb(0x10 | PARITY_MASK, port_base + TMC_Cntl);
1191 in_interrupt_flag = 0;
1194 } else if (current_SC->SCp.phase & in_selection) {
1195 status = inb(port_base + SCSI_Status);
1196 if (!(status & 0x01)) {
1197 /* Try again, for slow devices */
1198 if (fdomain_select( scmd_id(current_SC) )) {
1200 printk( " SFAIL " );
1202 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1203 my_done( DID_NO_CONNECT << 16 );
1204 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1208 printk( " AltSel " );
1210 /* Stop arbitration and enable parity */
1211 outb(0x10 | PARITY_MASK, port_base + TMC_Cntl);
1214 current_SC->SCp.phase = in_other;
1215 outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl);
1216 outb(0x80, port_base + SCSI_Cntl);
1218 in_interrupt_flag = 0;
1223 /* current_SC->SCp.phase == in_other: this is the body of the routine */
1225 status = inb(port_base + SCSI_Status);
1227 if (status & 0x10) { /* REQ */
1229 switch (status & 0x0e) {
1231 case 0x08: /* COMMAND OUT */
1232 outb(current_SC->cmnd[current_SC->SCp.sent_command++],
1233 port_base + Write_SCSI_Data);
1235 printk( "CMD = %x,",
1236 current_SC->cmnd[ current_SC->SCp.sent_command - 1] );
1239 case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */
1240 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
1241 current_SC->SCp.have_data_in = -1;
1242 outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl);
1245 case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */
1246 if (chip != tmc1800 && !current_SC->SCp.have_data_in) {
1247 current_SC->SCp.have_data_in = 1;
1248 outb(0x90 | PARITY_MASK, port_base + TMC_Cntl);
1251 case 0x0c: /* STATUS IN */
1252 current_SC->SCp.Status = inb(port_base + Read_SCSI_Data);
1254 printk( "Status = %x, ", current_SC->SCp.Status );
1257 if (current_SC->SCp.Status
1258 && current_SC->SCp.Status != 2
1259 && current_SC->SCp.Status != 8) {
1260 printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n",
1261 current_SC->device->id,
1262 current_SC->cmnd[0],
1263 current_SC->SCp.Status );
1267 case 0x0a: /* MESSAGE OUT */
1268 outb(MESSAGE_REJECT, port_base + Write_SCSI_Data); /* Reject */
1270 case 0x0e: /* MESSAGE IN */
1271 current_SC->SCp.Message = inb(port_base + Read_SCSI_Data);
1273 printk( "Message = %x, ", current_SC->SCp.Message );
1275 if (!current_SC->SCp.Message) ++done;
1276 #if DEBUG_MESSAGES || EVERY_ACCESS
1277 if (current_SC->SCp.Message) {
1278 printk( "scsi: <fdomain> message = %x\n",
1279 current_SC->SCp.Message );
1286 if (chip == tmc1800 && !current_SC->SCp.have_data_in
1287 && (current_SC->SCp.sent_command >= current_SC->cmd_len)) {
1289 if(current_SC->sc_data_direction == DMA_TO_DEVICE)
1291 current_SC->SCp.have_data_in = -1;
1292 outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl);
1296 current_SC->SCp.have_data_in = 1;
1297 outb(0x90 | PARITY_MASK, port_base + TMC_Cntl);
1301 if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */
1302 while ((data_count = FIFO_Size - inw(port_base + FIFO_Data_Count)) > 512) {
1304 printk( "DC=%d, ", data_count ) ;
1306 if (data_count > current_SC->SCp.this_residual)
1307 data_count = current_SC->SCp.this_residual;
1308 if (data_count > 0) {
1310 printk( "%d OUT, ", data_count );
1312 if (data_count == 1) {
1313 outb(*current_SC->SCp.ptr++, port_base + Write_FIFO);
1314 --current_SC->SCp.this_residual;
1317 outsw(port_base + Write_FIFO, current_SC->SCp.ptr, data_count);
1318 current_SC->SCp.ptr += 2 * data_count;
1319 current_SC->SCp.this_residual -= 2 * data_count;
1322 if (!current_SC->SCp.this_residual) {
1323 if (current_SC->SCp.buffers_residual) {
1324 --current_SC->SCp.buffers_residual;
1325 ++current_SC->SCp.buffer;
1326 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
1327 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1334 if (current_SC->SCp.have_data_in == 1) { /* DATA IN */
1335 while ((data_count = inw(port_base + FIFO_Data_Count)) > 0) {
1337 printk( "DC=%d, ", data_count );
1339 if (data_count > current_SC->SCp.this_residual)
1340 data_count = current_SC->SCp.this_residual;
1343 printk( "%d IN, ", data_count );
1345 if (data_count == 1) {
1346 *current_SC->SCp.ptr++ = inb(port_base + Read_FIFO);
1347 --current_SC->SCp.this_residual;
1349 data_count >>= 1; /* Number of words */
1350 insw(port_base + Read_FIFO, current_SC->SCp.ptr, data_count);
1351 current_SC->SCp.ptr += 2 * data_count;
1352 current_SC->SCp.this_residual -= 2 * data_count;
1355 if (!current_SC->SCp.this_residual
1356 && current_SC->SCp.buffers_residual) {
1357 --current_SC->SCp.buffers_residual;
1358 ++current_SC->SCp.buffer;
1359 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
1360 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1367 printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in );
1371 if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) {
1372 char *buf = scsi_sglist(current_SC);
1373 if ((unsigned char)(*(buf + 2)) & 0x0f) {
1376 unsigned char qualifier;
1378 key = (unsigned char)(*(buf + 2)) & 0x0f;
1379 code = (unsigned char)(*(buf + 12));
1380 qualifier = (unsigned char)(*(buf + 13));
1382 if (key != UNIT_ATTENTION
1383 && !(key == NOT_READY
1385 && (!qualifier || qualifier == 0x02 || qualifier == 0x01))
1386 && !(key == ILLEGAL_REQUEST && (code == 0x25
1390 printk( "scsi: <fdomain> REQUEST SENSE"
1391 " Key = %x, Code = %x, Qualifier = %x\n",
1392 key, code, qualifier );
1397 printk( "BEFORE MY_DONE. . ." );
1399 spin_lock_irqsave(current_SC->device->host->host_lock, flags);
1400 my_done( (current_SC->SCp.Status & 0xff)
1401 | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) );
1402 spin_unlock_irqrestore(current_SC->device->host->host_lock, flags);
1404 printk( "RETURNING.\n" );
1408 if (current_SC->SCp.phase & disconnect) {
1409 outb(0xd0 | FIFO_COUNT, port_base + Interrupt_Cntl);
1410 outb(0x00, port_base + SCSI_Cntl);
1412 outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl);
1416 in_interrupt_flag = 0;
1421 static int fdomain_16x0_queue_lck(struct scsi_cmnd *SCpnt,
1422 void (*done)(struct scsi_cmnd *))
1425 panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" );
1428 printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1430 *(unsigned char *)SCpnt->cmnd,
1431 scsi_sg_count(SCpnt),
1432 scsi_bufflen(SCpnt));
1435 fdomain_make_bus_idle();
1437 current_SC = SCpnt; /* Save this for the done function */
1438 current_SC->scsi_done = done;
1440 /* Initialize static data */
1442 if (scsi_sg_count(current_SC)) {
1443 current_SC->SCp.buffer = scsi_sglist(current_SC);
1444 current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer);
1445 current_SC->SCp.this_residual = current_SC->SCp.buffer->length;
1446 current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1;
1448 current_SC->SCp.ptr = NULL;
1449 current_SC->SCp.this_residual = 0;
1450 current_SC->SCp.buffer = NULL;
1451 current_SC->SCp.buffers_residual = 0;
1454 current_SC->SCp.Status = 0;
1455 current_SC->SCp.Message = 0;
1456 current_SC->SCp.have_data_in = 0;
1457 current_SC->SCp.sent_command = 0;
1458 current_SC->SCp.phase = in_arbitration;
1460 /* Start arbitration */
1461 outb(0x00, port_base + Interrupt_Cntl);
1462 outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */
1463 outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */
1465 outb(0x20, port_base + Interrupt_Cntl);
1466 outb(0x14 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */
1471 static DEF_SCSI_QCMD(fdomain_16x0_queue)
1474 static void print_info(struct scsi_cmnd *SCpnt)
1480 if (!SCpnt || !SCpnt->device || !SCpnt->device->host) {
1481 printk(KERN_WARNING "scsi: <fdomain> Cannot provide detailed information\n");
1485 printk(KERN_INFO "%s\n", fdomain_16x0_info( SCpnt->device->host ) );
1486 print_banner(SCpnt->device->host);
1487 switch (SCpnt->SCp.phase) {
1488 case in_arbitration: printk("arbitration"); break;
1489 case in_selection: printk("selection"); break;
1490 case in_other: printk("other"); break;
1491 default: printk("unknown"); break;
1494 printk( " (%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n",
1497 *(unsigned char *)SCpnt->cmnd,
1498 scsi_sg_count(SCpnt),
1499 scsi_bufflen(SCpnt));
1500 printk( "sent_command = %d, have_data_in = %d, timeout = %d\n",
1501 SCpnt->SCp.sent_command,
1502 SCpnt->SCp.have_data_in,
1505 printk( "in_interrupt_flag = %d\n", in_interrupt_flag );
1508 imr = (inb( 0x0a1 ) << 8) + inb( 0x21 );
1510 irr = inb( 0xa0 ) << 8;
1514 isr = inb( 0xa0 ) << 8;
1518 /* Print out interesting information */
1519 printk( "IMR = 0x%04x", imr );
1520 if (imr & (1 << interrupt_level))
1521 printk( " (masked)" );
1522 printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr );
1524 printk( "SCSI Status = 0x%02x\n", inb(port_base + SCSI_Status));
1525 printk( "TMC Status = 0x%02x", inb(port_base + TMC_Status));
1526 if (inb((port_base + TMC_Status) & 1))
1527 printk( " (interrupt)" );
1529 printk("Interrupt Status = 0x%02x", inb(port_base + Interrupt_Status));
1530 if (inb(port_base + Interrupt_Status) & 0x08)
1531 printk( " (enabled)" );
1533 if (chip == tmc18c50 || chip == tmc18c30) {
1534 printk("FIFO Status = 0x%02x\n", inb(port_base + FIFO_Status));
1535 printk( "Int. Condition = 0x%02x\n",
1536 inb( port_base + Interrupt_Cond ) );
1538 printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) );
1539 if (chip == tmc18c50 || chip == tmc18c30)
1540 printk( "Configuration 2 = 0x%02x\n",
1541 inb( port_base + Configuration2 ) );
1545 static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt)
1547 #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT
1548 printk( "scsi: <fdomain> abort " );
1552 #if EVERY_ACCESS || ERRORS_ONLY
1553 printk( " (not in command)\n" );
1556 } else printk( "\n" );
1559 print_info( SCpnt );
1562 fdomain_make_bus_idle();
1563 current_SC->SCp.phase |= aborted;
1564 current_SC->result = DID_ABORT << 16;
1566 /* Aborts are not done well. . . */
1567 my_done(DID_ABORT << 16);
1571 int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt)
1573 unsigned long flags;
1575 local_irq_save(flags);
1577 outb(1, port_base + SCSI_Cntl);
1579 outb(0, port_base + SCSI_Cntl);
1581 outb(0, port_base + SCSI_Mode_Cntl);
1582 outb(PARITY_MASK, port_base + TMC_Cntl);
1584 local_irq_restore(flags);
1588 static int fdomain_16x0_biosparam(struct scsi_device *sdev,
1589 struct block_device *bdev,
1590 sector_t capacity, int *info_array)
1593 int size = capacity;
1594 unsigned long offset;
1596 unsigned short cylinders;
1597 unsigned char heads;
1598 unsigned char sectors;
1602 The RAM area starts at 0x1f00 from the bios_base address.
1604 For BIOS Version 2.0:
1606 The drive parameter table seems to start at 0x1f30.
1607 The first byte's purpose is not known.
1608 Next is the cylinder, head, and sector information.
1609 The last 4 bytes appear to be the drive's size in sectors.
1610 The other bytes in the drive parameter table are unknown.
1611 If anyone figures them out, please send me mail, and I will
1614 Tape drives do not get placed in this table.
1616 There is another table at 0x1fea:
1617 If the byte is 0x01, then the SCSI ID is not in use.
1618 If the byte is 0x18 or 0x48, then the SCSI ID is in use,
1619 although tapes don't seem to be in this table. I haven't
1620 seen any other numbers (in a limited sample).
1622 0x1f2d is a drive count (i.e., not including tapes)
1624 The table at 0x1fcc are I/O ports addresses for the various
1625 operations. I calculate these by hand in this driver code.
1629 For the ISA-200S version of BIOS Version 2.0:
1631 The drive parameter table starts at 0x1f33.
1633 WARNING: Assume that the table entry is 25 bytes long. Someone needs
1634 to check this for the Quantum ISA-200S card.
1638 For BIOS Version 3.2:
1640 The drive parameter table starts at 0x1f70. Each entry is
1641 0x0a bytes long. Heads are one less than we need to report.
1644 if (MAJOR(bdev->bd_dev) != SCSI_DISK0_MAJOR) {
1645 printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks");
1648 drive = MINOR(bdev->bd_dev) >> 4;
1650 if (bios_major == 2) {
1652 case 2: /* ISA_200S */
1653 /* The value of 25 has never been verified.
1654 It should probably be 15. */
1655 offset = 0x1f33 + drive * 25;
1657 case 3: /* ISA_250MG */
1658 offset = 0x1f36 + drive * 15;
1660 case 4: /* ISA_200S (another one) */
1661 offset = 0x1f34 + drive * 15;
1664 offset = 0x1f31 + drive * 25;
1667 memcpy_fromio( &i, bios_mem + offset, sizeof( struct drive_info ) );
1668 info_array[0] = i.heads;
1669 info_array[1] = i.sectors;
1670 info_array[2] = i.cylinders;
1671 } else if (bios_major == 3
1673 && bios_minor < 4) { /* 3.0 and 3.2 BIOS */
1674 memcpy_fromio( &i, bios_mem + 0x1f71 + drive * 10,
1675 sizeof( struct drive_info ) );
1676 info_array[0] = i.heads + 1;
1677 info_array[1] = i.sectors;
1678 info_array[2] = i.cylinders;
1679 } else { /* 3.4 BIOS (and up?) */
1680 /* This algorithm was provided by Future Domain (much thanks!). */
1681 unsigned char *p = scsi_bios_ptable(bdev);
1683 if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */
1684 && p[4]) { /* Partition type */
1686 /* The partition table layout is as follows:
1689 Offset: 0 = partition status
1691 2 = starting sector and cylinder (word, encoded)
1694 6 = ending sector and cylinder (word, encoded)
1695 8 = starting absolute sector (double word)
1696 c = number of sectors (double word)
1697 Signature: 0x1fe = 0x55aa
1699 So, this algorithm assumes:
1700 1) the first partition table is in use,
1701 2) the data in the first entry is correct, and
1702 3) partitions never divide cylinders
1704 Note that (1) may be FALSE for NetBSD (and other BSD flavors),
1705 as well as for Linux. Note also, that Linux doesn't pay any
1706 attention to the fields that are used by this algorithm -- it
1707 only uses the absolute sector data. Recent versions of Linux's
1708 fdisk(1) will fill this data in correctly, and forthcoming
1709 versions will check for consistency.
1711 Checking for a non-zero partition type is not part of the
1712 Future Domain algorithm, but it seemed to be a reasonable thing
1713 to do, especially in the Linux and BSD worlds. */
1715 info_array[0] = p[5] + 1; /* heads */
1716 info_array[1] = p[6] & 0x3f; /* sectors */
1719 /* Note that this new method guarantees that there will always be
1720 less than 1024 cylinders on a platter. This is good for drives
1721 up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */
1723 if ((unsigned int)size >= 0x7e0000U) {
1724 info_array[0] = 0xff; /* heads = 255 */
1725 info_array[1] = 0x3f; /* sectors = 63 */
1726 } else if ((unsigned int)size >= 0x200000U) {
1727 info_array[0] = 0x80; /* heads = 128 */
1728 info_array[1] = 0x3f; /* sectors = 63 */
1730 info_array[0] = 0x40; /* heads = 64 */
1731 info_array[1] = 0x20; /* sectors = 32 */
1734 /* For both methods, compute the cylinders */
1735 info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] );
1742 static int fdomain_16x0_release(struct Scsi_Host *shpnt)
1745 free_irq(shpnt->irq, shpnt);
1746 if (shpnt->io_port && shpnt->n_io_port)
1747 release_region(shpnt->io_port, shpnt->n_io_port);
1749 pci_dev_put(PCI_dev);
1753 struct scsi_host_template fdomain_driver_template = {
1754 .module = THIS_MODULE,
1756 .proc_name = "fdomain",
1757 .detect = fdomain_16x0_detect,
1758 .info = fdomain_16x0_info,
1759 .queuecommand = fdomain_16x0_queue,
1760 .eh_abort_handler = fdomain_16x0_abort,
1761 .eh_bus_reset_handler = fdomain_16x0_bus_reset,
1762 .bios_param = fdomain_16x0_biosparam,
1763 .release = fdomain_16x0_release,
1767 .use_clustering = DISABLE_CLUSTERING,
1771 #if defined(CONFIG_PCI) && defined(MODULE)
1773 static struct pci_device_id fdomain_pci_tbl[] = {
1774 { PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70,
1775 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL },
1778 MODULE_DEVICE_TABLE(pci, fdomain_pci_tbl);
1780 #define driver_template fdomain_driver_template
1781 #include "scsi_module.c"