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1 | /* fdomain.c -- Future Domain TMC-16x0 SCSI driver |
2 | * Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu | |
3 | * Revised: Mon Dec 28 21:59:02 1998 by faith@acm.org | |
4 | * Author: Rickard E. Faith, faith@cs.unc.edu | |
5 | * Copyright 1992-1996, 1998 Rickard E. Faith (faith@acm.org) | |
6 | * Shared IRQ supported added 7/7/2001 Alan Cox <alan@redhat.com> | |
7 | ||
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the | |
10 | * Free Software Foundation; either version 2, or (at your option) any | |
11 | * later version. | |
12 | ||
13 | * This program is distributed in the hope that it will be useful, but | |
14 | * WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
16 | * General Public License for more details. | |
17 | ||
18 | * You should have received a copy of the GNU General Public License along | |
19 | * with this program; if not, write to the Free Software Foundation, Inc., | |
20 | * 675 Mass Ave, Cambridge, MA 02139, USA. | |
21 | ||
22 | ************************************************************************** | |
23 | ||
24 | SUMMARY: | |
25 | ||
26 | Future Domain BIOS versions supported for autodetect: | |
27 | 2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61 | |
28 | Chips are supported: | |
29 | TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70 | |
30 | Boards supported: | |
31 | Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX | |
32 | Future Domain TMC-3260 (PCI) | |
33 | Quantum ISA-200S, ISA-250MG | |
34 | Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead] | |
35 | IBM ? | |
36 | LILO/INSMOD command-line options: | |
37 | fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>] | |
38 | ||
39 | ||
40 | ||
41 | NOTE: | |
42 | ||
43 | The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it. | |
44 | Use the aic7xxx driver for this board. | |
45 | ||
46 | The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right | |
47 | driver for that card. Unfortunately, the boxes will probably just say | |
48 | "2920", so you'll have to look on the card for a Future Domain logo, or a | |
49 | letter after the 2920. | |
50 | ||
51 | ||
52 | ||
53 | THANKS: | |
54 | ||
55 | Thanks to Adaptec for providing PCI boards for testing. This finally | |
56 | enabled me to test the PCI detection and correct it for PCI boards that do | |
57 | not have a BIOS at a standard ISA location. For PCI boards, LILO/INSMOD | |
58 | command-line options should no longer be needed. --RF 18Nov98 | |
59 | ||
60 | ||
61 | ||
62 | DESCRIPTION: | |
63 | ||
64 | This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680 | |
65 | TMC-1650/1670, and TMC-3260 SCSI host adapters. The 1650 and 1670 have a | |
66 | 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin | |
67 | high-density external connector. The 1670 and 1680 have floppy disk | |
68 | controllers built in. The TMC-3260 is a PCI bus card. | |
69 | ||
70 | Future Domain's older boards are based on the TMC-1800 chip, and this | |
71 | driver was originally written for a TMC-1680 board with the TMC-1800 chip. | |
72 | More recently, boards are being produced with the TMC-18C50 and TMC-18C30 | |
73 | chips. The latest and greatest board may not work with this driver. If | |
74 | you have to patch this driver so that it will recognize your board's BIOS | |
75 | signature, then the driver may fail to function after the board is | |
76 | detected. | |
77 | ||
78 | Please note that the drive ordering that Future Domain implemented in BIOS | |
79 | versions 3.4 and 3.5 is the opposite of the order (currently) used by the | |
80 | rest of the SCSI industry. If you have BIOS version 3.4 or 3.5, and have | |
81 | more than one drive, then the drive ordering will be the reverse of that | |
82 | which you see under DOS. For example, under DOS SCSI ID 0 will be D: and | |
83 | SCSI ID 1 will be C: (the boot device). Under Linux, SCSI ID 0 will be | |
84 | /dev/sda and SCSI ID 1 will be /dev/sdb. The Linux ordering is consistent | |
85 | with that provided by all the other SCSI drivers for Linux. If you want | |
86 | this changed, you will probably have to patch the higher level SCSI code. | |
87 | If you do so, please send me patches that are protected by #ifdefs. | |
88 | ||
89 | If you have a TMC-8xx or TMC-9xx board, then this is not the driver for | |
90 | your board. Please refer to the Seagate driver for more information and | |
91 | possible support. | |
92 | ||
93 | ||
94 | ||
95 | HISTORY: | |
96 | ||
97 | Linux Driver Driver | |
98 | Version Version Date Support/Notes | |
99 | ||
100 | 0.0 3 May 1992 V2.0 BIOS; 1800 chip | |
101 | 0.97 1.9 28 Jul 1992 | |
102 | 0.98.6 3.1 27 Nov 1992 | |
103 | 0.99 3.2 9 Dec 1992 | |
104 | ||
105 | 0.99.3 3.3 10 Jan 1993 V3.0 BIOS | |
106 | 0.99.5 3.5 18 Feb 1993 | |
107 | 0.99.10 3.6 15 May 1993 V3.2 BIOS; 18C50 chip | |
108 | 0.99.11 3.17 3 Jul 1993 (now under RCS) | |
109 | 0.99.12 3.18 13 Aug 1993 | |
110 | 0.99.14 5.6 31 Oct 1993 (reselection code removed) | |
111 | ||
112 | 0.99.15 5.9 23 Jan 1994 V3.4 BIOS (preliminary) | |
113 | 1.0.8/1.1.1 5.15 1 Apr 1994 V3.4 BIOS; 18C30 chip (preliminary) | |
114 | 1.0.9/1.1.3 5.16 7 Apr 1994 V3.4 BIOS; 18C30 chip | |
115 | 1.1.38 5.18 30 Jul 1994 36C70 chip (PCI version of 18C30) | |
116 | 1.1.62 5.20 2 Nov 1994 V3.5 BIOS | |
117 | 1.1.73 5.22 7 Dec 1994 Quantum ISA-200S board; V2.0 BIOS | |
118 | ||
119 | 1.1.82 5.26 14 Jan 1995 V3.5 BIOS; TMC-1610M/MER/MEX board | |
120 | 1.2.10 5.28 5 Jun 1995 Quantum ISA-250MG board; V2.0, V2.01 BIOS | |
121 | 1.3.4 5.31 23 Jun 1995 PCI BIOS-32 detection (preliminary) | |
122 | 1.3.7 5.33 4 Jul 1995 PCI BIOS-32 detection | |
123 | 1.3.28 5.36 17 Sep 1995 V3.61 BIOS; LILO command-line support | |
124 | 1.3.34 5.39 12 Oct 1995 V3.60 BIOS; /proc | |
125 | 1.3.72 5.39 8 Feb 1996 Adaptec AHA-2920 board | |
126 | 1.3.85 5.41 4 Apr 1996 | |
127 | 2.0.12 5.44 8 Aug 1996 Use ID 7 for all PCI cards | |
128 | 2.1.1 5.45 2 Oct 1996 Update ROM accesses for 2.1.x | |
129 | 2.1.97 5.46 23 Apr 1998 Rewritten PCI detection routines [mj] | |
130 | 2.1.11x 5.47 9 Aug 1998 Touched for 8 SCSI disk majors support | |
131 | 5.48 18 Nov 1998 BIOS no longer needed for PCI detection | |
132 | 2.2.0 5.50 28 Dec 1998 Support insmod parameters | |
133 | ||
134 | ||
135 | REFERENCES USED: | |
136 | ||
137 | "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation, | |
138 | 1990. | |
139 | ||
140 | "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain | |
141 | Corporation, January 1992. | |
142 | ||
143 | "LXT SCSI Products: Specifications and OEM Technical Manual (Revision | |
144 | B/September 1991)", Maxtor Corporation, 1991. | |
145 | ||
146 | "7213S product Manual (Revision P3)", Maxtor Corporation, 1992. | |
147 | ||
148 | "Draft Proposed American National Standard: Small Computer System | |
149 | Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109, | |
150 | revision 10h, October 17, 1991) | |
151 | ||
152 | Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric | |
153 | Youngdale (ericy@cais.com), 1992. | |
154 | ||
155 | Private communication, Tuong Le (Future Domain Engineering department), | |
156 | 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and | |
157 | TMC-18C30 detection.) | |
158 | ||
159 | Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page | |
160 | 60 (2.39: Disk Partition Table Layout). | |
161 | ||
162 | "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page | |
163 | 6-1. | |
164 | ||
165 | ||
166 | ||
167 | NOTES ON REFERENCES: | |
168 | ||
169 | The Maxtor manuals were free. Maxtor telephone technical support is | |
170 | great! | |
171 | ||
172 | The Future Domain manuals were $25 and $35. They document the chip, not | |
173 | the TMC-16x0 boards, so some information I had to guess at. In 1992, | |
174 | Future Domain sold DOS BIOS source for $250 and the UN*X driver source was | |
175 | $750, but these required a non-disclosure agreement, so even if I could | |
176 | have afforded them, they would *not* have been useful for writing this | |
177 | publically distributable driver. Future Domain technical support has | |
178 | provided some information on the phone and have sent a few useful FAXs. | |
179 | They have been much more helpful since they started to recognize that the | |
180 | word "Linux" refers to an operating system :-). | |
181 | ||
182 | ||
183 | ||
184 | ALPHA TESTERS: | |
185 | ||
186 | There are many other alpha testers that come and go as the driver | |
187 | develops. The people listed here were most helpful in times of greatest | |
188 | need (mostly early on -- I've probably left out a few worthy people in | |
189 | more recent times): | |
190 | ||
191 | Todd Carrico (todd@wutc.wustl.edu), Dan Poirier (poirier@cs.unc.edu ), Ken | |
192 | Corey (kenc@sol.acs.unt.edu), C. de Bruin (bruin@bruin@sterbbs.nl), Sakari | |
193 | Aaltonen (sakaria@vipunen.hit.fi), John Rice (rice@xanth.cs.odu.edu), Brad | |
194 | Yearwood (brad@optilink.com), and Ray Toy (toy@soho.crd.ge.com). | |
195 | ||
196 | Special thanks to Tien-Wan Yang (twyang@cs.uh.edu), who graciously lent me | |
197 | his 18C50-based card for debugging. He is the sole reason that this | |
198 | driver works with the 18C50 chip. | |
199 | ||
200 | Thanks to Dave Newman (dnewman@crl.com) for providing initial patches for | |
201 | the version 3.4 BIOS. | |
202 | ||
203 | Thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for providing | |
204 | patches that support the TMC-3260, a PCI bus card with the 36C70 chip. | |
205 | The 36C70 chip appears to be "completely compatible" with the 18C30 chip. | |
206 | ||
207 | Thanks to Eric Kasten (tigger@petroglyph.cl.msu.edu) for providing the | |
208 | patch for the version 3.5 BIOS. | |
209 | ||
210 | Thanks for Stephen Henson (shenson@nyx10.cs.du.edu) for providing the | |
211 | patch for the Quantum ISA-200S SCSI adapter. | |
212 | ||
213 | Thanks to Adam Bowen for the signature to the 1610M/MER/MEX scsi cards, to | |
214 | Martin Andrews (andrewm@ccfadm.eeg.ccf.org) for the signature to some | |
215 | random TMC-1680 repackaged by IBM; and to Mintak Ng (mintak@panix.com) for | |
216 | the version 3.61 BIOS signature. | |
217 | ||
218 | Thanks for Mark Singer (elf@netcom.com) and Richard Simpson | |
219 | (rsimpson@ewrcsdra.demon.co.uk) for more Quantum signatures and detective | |
220 | work on the Quantum RAM layout. | |
221 | ||
222 | Special thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for | |
223 | providing patches for proper PCI BIOS32-mediated detection of the TMC-3260 | |
224 | card (a PCI bus card with the 36C70 chip). Please send James PCI-related | |
225 | bug reports. | |
226 | ||
227 | Thanks to Tom Cavin (tec@usa1.com) for preliminary command-line option | |
228 | patches. | |
229 | ||
230 | New PCI detection code written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> | |
231 | ||
232 | Insmod parameter code based on patches from Daniel Graham | |
233 | <graham@balance.uoregon.edu>. | |
234 | ||
235 | All of the alpha testers deserve much thanks. | |
236 | ||
237 | ||
238 | ||
239 | NOTES ON USER DEFINABLE OPTIONS: | |
240 | ||
241 | DEBUG: This turns on the printing of various debug information. | |
242 | ||
243 | ENABLE_PARITY: This turns on SCSI parity checking. With the current | |
244 | driver, all attached devices must support SCSI parity. If none of your | |
245 | devices support parity, then you can probably get the driver to work by | |
246 | turning this option off. I have no way of testing this, however, and it | |
247 | would appear that no one ever uses this option. | |
248 | ||
249 | FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the | |
250 | 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by | |
251 | the SCSI device, an interrupt will be raised. Therefore, this could be as | |
252 | low as 0, or as high as 16. Note, however, that values which are too high | |
253 | or too low seem to prevent any interrupts from occurring, and thereby lock | |
254 | up the machine. I have found that 2 is a good number, but throughput may | |
255 | be increased by changing this value to values which are close to 2. | |
256 | Please let me know if you try any different values. | |
257 | ||
258 | RESELECTION: This is no longer an option, since I gave up trying to | |
259 | implement it in version 4.x of this driver. It did not improve | |
260 | performance at all and made the driver unstable (because I never found one | |
261 | of the two race conditions which were introduced by the multiple | |
262 | outstanding command code). The instability seems a very high price to pay | |
263 | just so that you don't have to wait for the tape to rewind. If you want | |
264 | this feature implemented, send me patches. I'll be happy to send a copy | |
265 | of my (broken) driver to anyone who would like to see a copy. | |
266 | ||
267 | **************************************************************************/ | |
268 | ||
269 | #include <linux/config.h> | |
270 | #include <linux/module.h> | |
271 | #include <linux/init.h> | |
272 | #include <linux/interrupt.h> | |
273 | #include <linux/blkdev.h> | |
274 | #include <linux/spinlock.h> | |
275 | #include <linux/errno.h> | |
276 | #include <linux/string.h> | |
277 | #include <linux/ioport.h> | |
278 | #include <linux/proc_fs.h> | |
279 | #include <linux/pci.h> | |
280 | #include <linux/stat.h> | |
281 | #include <linux/delay.h> | |
282 | #include <scsi/scsicam.h> | |
283 | ||
284 | #include <asm/io.h> | |
285 | #include <asm/system.h> | |
286 | ||
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> | |
292 | #include "fdomain.h" | |
293 | ||
294 | MODULE_AUTHOR("Rickard E. Faith"); | |
295 | MODULE_DESCRIPTION("Future domain SCSI driver"); | |
296 | MODULE_LICENSE("GPL"); | |
297 | ||
298 | ||
299 | #define VERSION "$Revision: 5.51 $" | |
300 | ||
301 | /* START OF USER DEFINABLE OPTIONS */ | |
302 | ||
303 | #define DEBUG 0 /* Enable debugging output */ | |
304 | #define ENABLE_PARITY 1 /* Enable SCSI Parity */ | |
305 | #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */ | |
306 | ||
307 | /* END OF USER DEFINABLE OPTIONS */ | |
308 | ||
309 | #if DEBUG | |
310 | #define EVERY_ACCESS 0 /* Write a line on every scsi access */ | |
311 | #define ERRORS_ONLY 1 /* Only write a line if there is an error */ | |
312 | #define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */ | |
313 | #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */ | |
314 | #define DEBUG_ABORT 1 /* Debug abort() routine */ | |
315 | #define DEBUG_RESET 1 /* Debug reset() routine */ | |
316 | #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */ | |
317 | #else | |
318 | #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */ | |
319 | #define ERRORS_ONLY 0 | |
320 | #define DEBUG_DETECT 0 | |
321 | #define DEBUG_MESSAGES 0 | |
322 | #define DEBUG_ABORT 0 | |
323 | #define DEBUG_RESET 0 | |
324 | #define DEBUG_RACE 0 | |
325 | #endif | |
326 | ||
327 | /* Errors are reported on the line, so we don't need to report them again */ | |
328 | #if EVERY_ACCESS | |
329 | #undef ERRORS_ONLY | |
330 | #define ERRORS_ONLY 0 | |
331 | #endif | |
332 | ||
333 | #if ENABLE_PARITY | |
334 | #define PARITY_MASK 0x08 | |
335 | #else | |
336 | #define PARITY_MASK 0x00 | |
337 | #endif | |
338 | ||
339 | enum chip_type { | |
340 | unknown = 0x00, | |
341 | tmc1800 = 0x01, | |
342 | tmc18c50 = 0x02, | |
343 | tmc18c30 = 0x03, | |
344 | }; | |
345 | ||
346 | enum { | |
347 | in_arbitration = 0x02, | |
348 | in_selection = 0x04, | |
349 | in_other = 0x08, | |
350 | disconnect = 0x10, | |
351 | aborted = 0x20, | |
352 | sent_ident = 0x40, | |
353 | }; | |
354 | ||
355 | enum in_port_type { | |
356 | Read_SCSI_Data = 0, | |
357 | SCSI_Status = 1, | |
358 | TMC_Status = 2, | |
359 | FIFO_Status = 3, /* tmc18c50/tmc18c30 only */ | |
360 | Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */ | |
361 | LSB_ID_Code = 5, | |
362 | MSB_ID_Code = 6, | |
363 | Read_Loopback = 7, | |
364 | SCSI_Data_NoACK = 8, | |
365 | Interrupt_Status = 9, | |
366 | Configuration1 = 10, | |
367 | Configuration2 = 11, /* tmc18c50/tmc18c30 only */ | |
368 | Read_FIFO = 12, | |
369 | FIFO_Data_Count = 14 | |
370 | }; | |
371 | ||
372 | enum out_port_type { | |
373 | Write_SCSI_Data = 0, | |
374 | SCSI_Cntl = 1, | |
375 | Interrupt_Cntl = 2, | |
376 | SCSI_Mode_Cntl = 3, | |
377 | TMC_Cntl = 4, | |
378 | Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */ | |
379 | Write_Loopback = 7, | |
380 | IO_Control = 11, /* tmc18c30 only */ | |
381 | Write_FIFO = 12 | |
382 | }; | |
383 | ||
384 | /* .bss will zero all the static variables below */ | |
385 | static int port_base; | |
386 | static unsigned long bios_base; | |
387 | static void __iomem * bios_mem; | |
388 | static int bios_major; | |
389 | static int bios_minor; | |
390 | static int PCI_bus; | |
391 | static int Quantum; /* Quantum board variant */ | |
392 | static int interrupt_level; | |
393 | static volatile int in_command; | |
394 | static struct scsi_cmnd *current_SC; | |
395 | static enum chip_type chip = unknown; | |
396 | static int adapter_mask; | |
397 | static int this_id; | |
398 | static int setup_called; | |
399 | ||
400 | #if DEBUG_RACE | |
401 | static volatile int in_interrupt_flag; | |
402 | #endif | |
403 | ||
404 | static int FIFO_Size = 0x2000; /* 8k FIFO for | |
405 | pre-tmc18c30 chips */ | |
406 | ||
407 | static irqreturn_t do_fdomain_16x0_intr( int irq, void *dev_id, | |
408 | struct pt_regs * regs ); | |
409 | /* Allow insmod parameters to be like LILO parameters. For example: | |
410 | insmod fdomain fdomain=0x140,11 */ | |
411 | static char * fdomain = NULL; | |
412 | module_param(fdomain, charp, 0); | |
413 | ||
414 | static unsigned long addresses[] = { | |
415 | 0xc8000, | |
416 | 0xca000, | |
417 | 0xce000, | |
418 | 0xde000, | |
419 | 0xcc000, /* Extra addresses for PCI boards */ | |
420 | 0xd0000, | |
421 | 0xe0000, | |
422 | }; | |
423 | #define ADDRESS_COUNT (sizeof( addresses ) / sizeof( unsigned )) | |
424 | ||
425 | static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; | |
426 | #define PORT_COUNT (sizeof( ports ) / sizeof( unsigned short )) | |
427 | ||
428 | static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; | |
429 | ||
430 | /* | |
431 | ||
432 | READ THIS BEFORE YOU ADD A SIGNATURE! | |
433 | ||
434 | READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME! | |
435 | ||
436 | READ EVERY WORD, ESPECIALLY THE WORD *NOT* | |
437 | ||
438 | This driver works *ONLY* for Future Domain cards using the TMC-1800, | |
439 | TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670, | |
440 | and 1680. These are all 16-bit cards. | |
441 | ||
442 | The following BIOS signature signatures are for boards which do *NOT* | |
443 | work with this driver (these TMC-8xx and TMC-9xx boards may work with the | |
444 | Seagate driver): | |
445 | ||
446 | FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88 | |
447 | FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89 | |
448 | FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89 | |
449 | FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90 | |
450 | FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90 | |
451 | FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90 | |
452 | FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92 | |
453 | ||
454 | (The cards which do *NOT* work are all 8-bit cards -- although some of | |
455 | them have a 16-bit form-factor, the upper 8-bits are used only for IRQs | |
456 | and are *NOT* used for data. You can tell the difference by following | |
457 | the tracings on the circuit board -- if only the IRQ lines are involved, | |
458 | you have a "8-bit" card, and should *NOT* use this driver.) | |
459 | ||
460 | */ | |
461 | ||
462 | static struct signature { | |
463 | const char *signature; | |
464 | int sig_offset; | |
465 | int sig_length; | |
466 | int major_bios_version; | |
467 | int minor_bios_version; | |
468 | int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */ | |
469 | } signatures[] = { | |
470 | /* 1 2 3 4 5 6 */ | |
471 | /* 123456789012345678901234567890123456789012345678901234567890 */ | |
472 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 }, | |
473 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 }, | |
474 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 }, | |
475 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 }, | |
476 | { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 }, | |
477 | { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 }, | |
478 | { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 }, | |
479 | { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 }, | |
480 | { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 }, | |
481 | { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 }, | |
482 | { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 }, | |
483 | { "IBM F1 P264/32", 5, 14, 3, -1, 1 }, | |
484 | /* This next signature may not be a 3.5 bios */ | |
485 | { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 }, | |
486 | { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 }, | |
487 | { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 }, | |
488 | { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 }, | |
489 | { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 }, | |
490 | { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 }, | |
491 | ||
492 | /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE | |
493 | Also, fix the disk geometry code for your signature and send your | |
494 | changes for faith@cs.unc.edu. Above all, do *NOT* change any old | |
495 | signatures! | |
496 | ||
497 | Note that the last line will match a "generic" 18XX bios. Because | |
498 | Future Domain has changed the host SCSI ID and/or the location of the | |
499 | geometry information in the on-board RAM area for each of the first | |
500 | three BIOS's, it is still important to enter a fully qualified | |
501 | signature in the table for any new BIOS's (after the host SCSI ID and | |
502 | geometry location are verified). */ | |
503 | }; | |
504 | ||
505 | #define SIGNATURE_COUNT (sizeof( signatures ) / sizeof( struct signature )) | |
506 | ||
507 | static void print_banner( struct Scsi_Host *shpnt ) | |
508 | { | |
509 | if (!shpnt) return; /* This won't ever happen */ | |
510 | ||
511 | if (bios_major < 0 && bios_minor < 0) { | |
512 | printk(KERN_INFO "scsi%d: <fdomain> No BIOS; using scsi id %d\n", | |
513 | shpnt->host_no, shpnt->this_id); | |
514 | } else { | |
515 | printk(KERN_INFO "scsi%d: <fdomain> BIOS version ", shpnt->host_no); | |
516 | ||
517 | if (bios_major >= 0) printk("%d.", bios_major); | |
518 | else printk("?."); | |
519 | ||
520 | if (bios_minor >= 0) printk("%d", bios_minor); | |
521 | else printk("?."); | |
522 | ||
523 | printk( " at 0x%lx using scsi id %d\n", | |
524 | bios_base, shpnt->this_id ); | |
525 | } | |
526 | ||
527 | /* If this driver works for later FD PCI | |
528 | boards, we will have to modify banner | |
529 | for additional PCI cards, but for now if | |
530 | it's PCI it's a TMC-3260 - JTM */ | |
531 | printk(KERN_INFO "scsi%d: <fdomain> %s chip at 0x%x irq ", | |
532 | shpnt->host_no, | |
533 | chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")), | |
534 | port_base); | |
535 | ||
536 | if (interrupt_level) | |
537 | printk("%d", interrupt_level); | |
538 | else | |
539 | printk("<none>"); | |
540 | ||
541 | printk( "\n" ); | |
542 | } | |
543 | ||
544 | int fdomain_setup(char *str) | |
545 | { | |
546 | int ints[4]; | |
547 | ||
548 | (void)get_options(str, ARRAY_SIZE(ints), ints); | |
549 | ||
550 | if (setup_called++ || ints[0] < 2 || ints[0] > 3) { | |
551 | printk(KERN_INFO "scsi: <fdomain> Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n"); | |
552 | printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n"); | |
553 | return 0; | |
554 | } | |
555 | ||
556 | port_base = ints[0] >= 1 ? ints[1] : 0; | |
557 | interrupt_level = ints[0] >= 2 ? ints[2] : 0; | |
558 | this_id = ints[0] >= 3 ? ints[3] : 0; | |
559 | ||
560 | bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */ | |
561 | ++setup_called; | |
562 | return 1; | |
563 | } | |
564 | ||
565 | __setup("fdomain=", fdomain_setup); | |
566 | ||
567 | ||
568 | static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */ | |
569 | { | |
570 | mdelay(10*amount); | |
571 | } | |
572 | ||
77933d72 | 573 | static inline void fdomain_make_bus_idle( void ) |
1da177e4 LT |
574 | { |
575 | outb(0, port_base + SCSI_Cntl); | |
576 | outb(0, port_base + SCSI_Mode_Cntl); | |
577 | if (chip == tmc18c50 || chip == tmc18c30) | |
578 | outb(0x21 | PARITY_MASK, port_base + TMC_Cntl); /* Clear forced intr. */ | |
579 | else | |
580 | outb(0x01 | PARITY_MASK, port_base + TMC_Cntl); | |
581 | } | |
582 | ||
583 | static int fdomain_is_valid_port( int port ) | |
584 | { | |
585 | #if DEBUG_DETECT | |
586 | printk( " (%x%x),", | |
587 | inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) ); | |
588 | #endif | |
589 | ||
590 | /* The MCA ID is a unique id for each MCA compatible board. We | |
591 | are using ISA boards, but Future Domain provides the MCA ID | |
592 | anyway. We can use this ID to ensure that this is a Future | |
593 | Domain TMC-1660/TMC-1680. | |
594 | */ | |
595 | ||
596 | if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */ | |
597 | if (inb( port + LSB_ID_Code ) != 0x27) return 0; | |
598 | if (inb( port + MSB_ID_Code ) != 0x61) return 0; | |
599 | chip = tmc1800; | |
600 | } else { /* test for 0xe960 id */ | |
601 | if (inb( port + MSB_ID_Code ) != 0x60) return 0; | |
602 | chip = tmc18c50; | |
603 | ||
604 | /* Try to toggle 32-bit mode. This only | |
605 | works on an 18c30 chip. (User reports | |
606 | say this works, so we should switch to | |
607 | it in the near future.) */ | |
608 | ||
609 | outb( 0x80, port + IO_Control ); | |
610 | if ((inb( port + Configuration2 ) & 0x80) == 0x80) { | |
611 | outb( 0x00, port + IO_Control ); | |
612 | if ((inb( port + Configuration2 ) & 0x80) == 0x00) { | |
613 | chip = tmc18c30; | |
614 | FIFO_Size = 0x800; /* 2k FIFO */ | |
615 | } | |
616 | } | |
617 | /* If that failed, we are an 18c50. */ | |
618 | } | |
619 | ||
620 | return 1; | |
621 | } | |
622 | ||
623 | static int fdomain_test_loopback( void ) | |
624 | { | |
625 | int i; | |
626 | int result; | |
627 | ||
628 | for (i = 0; i < 255; i++) { | |
629 | outb( i, port_base + Write_Loopback ); | |
630 | result = inb( port_base + Read_Loopback ); | |
631 | if (i != result) | |
632 | return 1; | |
633 | } | |
634 | return 0; | |
635 | } | |
636 | ||
637 | /* fdomain_get_irq assumes that we have a valid MCA ID for a | |
638 | TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the | |
639 | bios_base matches these ports. If someone was unlucky enough to have | |
640 | purchased more than one Future Domain board, then they will have to | |
641 | modify this code, as we only detect one board here. [The one with the | |
642 | lowest bios_base.] | |
643 | ||
644 | Note that this routine is only used for systems without a PCI BIOS32 | |
645 | (e.g., ISA bus). For PCI bus systems, this routine will likely fail | |
646 | unless one of the IRQs listed in the ints array is used by the board. | |
647 | Sometimes it is possible to use the computer's BIOS setup screen to | |
648 | configure a PCI system so that one of these IRQs will be used by the | |
649 | Future Domain card. */ | |
650 | ||
651 | static int fdomain_get_irq( int base ) | |
652 | { | |
653 | int options = inb(base + Configuration1); | |
654 | ||
655 | #if DEBUG_DETECT | |
656 | printk("scsi: <fdomain> Options = %x\n", options); | |
657 | #endif | |
658 | ||
659 | /* Check for board with lowest bios_base -- | |
660 | this isn't valid for the 18c30 or for | |
661 | boards on the PCI bus, so just assume we | |
662 | have the right board. */ | |
663 | ||
664 | if (chip != tmc18c30 && !PCI_bus && addresses[(options & 0xc0) >> 6 ] != bios_base) | |
665 | return 0; | |
666 | return ints[(options & 0x0e) >> 1]; | |
667 | } | |
668 | ||
669 | static int fdomain_isa_detect( int *irq, int *iobase ) | |
670 | { | |
671 | #ifndef PCMCIA | |
672 | int i, j; | |
673 | int base = 0xdeadbeef; | |
674 | int flag = 0; | |
675 | ||
676 | #if DEBUG_DETECT | |
677 | printk( "scsi: <fdomain> fdomain_isa_detect:" ); | |
678 | #endif | |
679 | ||
680 | for (i = 0; i < ADDRESS_COUNT; i++) { | |
681 | void __iomem *p = ioremap(addresses[i], 0x2000); | |
682 | if (!p) | |
683 | continue; | |
684 | #if DEBUG_DETECT | |
685 | printk( " %lx(%lx),", addresses[i], bios_base ); | |
686 | #endif | |
687 | for (j = 0; j < SIGNATURE_COUNT; j++) { | |
688 | if (check_signature(p + signatures[j].sig_offset, | |
689 | signatures[j].signature, | |
690 | signatures[j].sig_length )) { | |
691 | bios_major = signatures[j].major_bios_version; | |
692 | bios_minor = signatures[j].minor_bios_version; | |
693 | PCI_bus = (signatures[j].flag == 1); | |
694 | Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0; | |
695 | bios_base = addresses[i]; | |
696 | bios_mem = p; | |
697 | goto found; | |
698 | } | |
699 | } | |
700 | iounmap(p); | |
701 | } | |
702 | ||
703 | found: | |
704 | if (bios_major == 2) { | |
705 | /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM. | |
706 | Assuming the ROM is enabled (otherwise we wouldn't have been | |
707 | able to read the ROM signature :-), then the ROM sets up the | |
708 | RAM area with some magic numbers, such as a list of port | |
709 | base addresses and a list of the disk "geometry" reported to | |
710 | DOS (this geometry has nothing to do with physical geometry). | |
711 | */ | |
712 | ||
713 | switch (Quantum) { | |
714 | case 2: /* ISA_200S */ | |
715 | case 3: /* ISA_250MG */ | |
716 | base = readb(bios_mem + 0x1fa2) + (readb(bios_mem + 0x1fa3) << 8); | |
717 | break; | |
718 | case 4: /* ISA_200S (another one) */ | |
719 | base = readb(bios_mem + 0x1fa3) + (readb(bios_mem + 0x1fa4) << 8); | |
720 | break; | |
721 | default: | |
722 | base = readb(bios_mem + 0x1fcc) + (readb(bios_mem + 0x1fcd) << 8); | |
723 | break; | |
724 | } | |
725 | ||
726 | #if DEBUG_DETECT | |
727 | printk( " %x,", base ); | |
728 | #endif | |
729 | ||
730 | for (i = 0; i < PORT_COUNT; i++) { | |
731 | if (base == ports[i]) { | |
732 | if (!request_region(base, 0x10, "fdomain")) | |
733 | break; | |
734 | if (!fdomain_is_valid_port(base)) { | |
735 | release_region(base, 0x10); | |
736 | break; | |
737 | } | |
738 | *irq = fdomain_get_irq( base ); | |
739 | *iobase = base; | |
740 | return 1; | |
741 | } | |
742 | } | |
743 | ||
744 | /* This is a bad sign. It usually means that someone patched the | |
745 | BIOS signature list (the signatures variable) to contain a BIOS | |
746 | signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */ | |
747 | ||
748 | #if DEBUG_DETECT | |
749 | printk( " RAM FAILED, " ); | |
750 | #endif | |
751 | } | |
752 | ||
753 | /* Anyway, the alternative to finding the address in the RAM is to just | |
754 | search through every possible port address for one that is attached | |
755 | to the Future Domain card. Don't panic, though, about reading all | |
756 | these random port addresses -- there are rumors that the Future | |
757 | Domain BIOS does something very similar. | |
758 | ||
759 | Do not, however, check ports which the kernel knows are being used by | |
760 | another driver. */ | |
761 | ||
762 | for (i = 0; i < PORT_COUNT; i++) { | |
763 | base = ports[i]; | |
764 | if (!request_region(base, 0x10, "fdomain")) { | |
765 | #if DEBUG_DETECT | |
766 | printk( " (%x inuse),", base ); | |
767 | #endif | |
768 | continue; | |
769 | } | |
770 | #if DEBUG_DETECT | |
771 | printk( " %x,", base ); | |
772 | #endif | |
773 | flag = fdomain_is_valid_port(base); | |
774 | if (flag) | |
775 | break; | |
776 | release_region(base, 0x10); | |
777 | } | |
778 | ||
779 | #if DEBUG_DETECT | |
780 | if (flag) printk( " SUCCESS\n" ); | |
781 | else printk( " FAILURE\n" ); | |
782 | #endif | |
783 | ||
784 | if (!flag) return 0; /* iobase not found */ | |
785 | ||
786 | *irq = fdomain_get_irq( base ); | |
787 | *iobase = base; | |
788 | ||
789 | return 1; /* success */ | |
790 | #else | |
791 | return 0; | |
792 | #endif | |
793 | } | |
794 | ||
795 | /* PCI detection function: int fdomain_pci_bios_detect(int* irq, int* | |
796 | iobase) This function gets the Interrupt Level and I/O base address from | |
797 | the PCI configuration registers. */ | |
798 | ||
799 | #ifdef CONFIG_PCI | |
800 | static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev ) | |
801 | { | |
802 | unsigned int pci_irq; /* PCI interrupt line */ | |
803 | unsigned long pci_base; /* PCI I/O base address */ | |
804 | struct pci_dev *pdev = NULL; | |
805 | ||
806 | #if DEBUG_DETECT | |
807 | /* Tell how to print a list of the known PCI devices from bios32 and | |
808 | list vendor and device IDs being used if in debug mode. */ | |
809 | ||
810 | printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" ); | |
811 | printk( "scsi: <fdomain> TMC-3260 detect:" | |
812 | " Using Vendor ID: 0x%x and Device ID: 0x%x\n", | |
813 | PCI_VENDOR_ID_FD, | |
814 | PCI_DEVICE_ID_FD_36C70 ); | |
815 | #endif | |
816 | ||
817 | if ((pdev = pci_find_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL) | |
818 | return 0; | |
819 | if (pci_enable_device(pdev)) return 0; | |
820 | ||
821 | #if DEBUG_DETECT | |
822 | printk( "scsi: <fdomain> TMC-3260 detect:" | |
823 | " PCI bus %u, device %u, function %u\n", | |
824 | pdev->bus->number, | |
825 | PCI_SLOT(pdev->devfn), | |
826 | PCI_FUNC(pdev->devfn)); | |
827 | #endif | |
828 | ||
829 | /* We now have the appropriate device function for the FD board so we | |
830 | just read the PCI config info from the registers. */ | |
831 | ||
832 | pci_base = pci_resource_start(pdev, 0); | |
833 | pci_irq = pdev->irq; | |
834 | ||
835 | if (!request_region( pci_base, 0x10, "fdomain" )) | |
836 | return 0; | |
837 | ||
838 | /* Now we have the I/O base address and interrupt from the PCI | |
839 | configuration registers. */ | |
840 | ||
841 | *irq = pci_irq; | |
842 | *iobase = pci_base; | |
843 | *ret_pdev = pdev; | |
844 | ||
845 | #if DEBUG_DETECT | |
846 | printk( "scsi: <fdomain> TMC-3260 detect:" | |
847 | " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base ); | |
848 | #endif | |
849 | ||
850 | if (!fdomain_is_valid_port(pci_base)) { | |
851 | printk(KERN_ERR "scsi: <fdomain> PCI card detected, but driver not loaded (invalid port)\n" ); | |
852 | release_region(pci_base, 0x10); | |
853 | return 0; | |
854 | } | |
855 | ||
856 | /* Fill in a few global variables. Ugh. */ | |
857 | bios_major = bios_minor = -1; | |
858 | PCI_bus = 1; | |
859 | Quantum = 0; | |
860 | bios_base = 0; | |
861 | ||
862 | return 1; | |
863 | } | |
864 | #endif | |
865 | ||
866 | struct Scsi_Host *__fdomain_16x0_detect(struct scsi_host_template *tpnt ) | |
867 | { | |
868 | int retcode; | |
869 | struct Scsi_Host *shpnt; | |
870 | struct pci_dev *pdev = NULL; | |
871 | ||
872 | if (setup_called) { | |
873 | #if DEBUG_DETECT | |
874 | printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n", | |
875 | port_base, interrupt_level ); | |
876 | #endif | |
877 | if (!request_region(port_base, 0x10, "fdomain")) { | |
878 | printk( "scsi: <fdomain> port 0x%x is busy\n", port_base ); | |
879 | printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); | |
880 | return NULL; | |
881 | } | |
882 | if (!fdomain_is_valid_port( port_base )) { | |
883 | printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n", | |
884 | port_base ); | |
885 | printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); | |
886 | release_region(port_base, 0x10); | |
887 | return NULL; | |
888 | } | |
889 | } else { | |
890 | int flag = 0; | |
891 | ||
892 | #ifdef CONFIG_PCI | |
893 | /* Try PCI detection first */ | |
894 | flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev ); | |
895 | #endif | |
896 | if (!flag) { | |
897 | /* Then try ISA bus detection */ | |
898 | flag = fdomain_isa_detect( &interrupt_level, &port_base ); | |
899 | ||
900 | if (!flag) { | |
901 | printk( "scsi: <fdomain> Detection failed (no card)\n" ); | |
902 | return NULL; | |
903 | } | |
904 | } | |
905 | } | |
906 | ||
907 | fdomain_16x0_bus_reset(NULL); | |
908 | ||
909 | if (fdomain_test_loopback()) { | |
910 | printk(KERN_ERR "scsi: <fdomain> Detection failed (loopback test failed at port base 0x%x)\n", port_base); | |
911 | if (setup_called) { | |
912 | printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n"); | |
913 | } | |
914 | release_region(port_base, 0x10); | |
915 | return NULL; | |
916 | } | |
917 | ||
918 | if (this_id) { | |
919 | tpnt->this_id = (this_id & 0x07); | |
920 | adapter_mask = (1 << tpnt->this_id); | |
921 | } else { | |
922 | if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) { | |
923 | tpnt->this_id = 7; | |
924 | adapter_mask = 0x80; | |
925 | } else { | |
926 | tpnt->this_id = 6; | |
927 | adapter_mask = 0x40; | |
928 | } | |
929 | } | |
930 | ||
931 | /* Print out a banner here in case we can't | |
932 | get resources. */ | |
933 | ||
934 | shpnt = scsi_register( tpnt, 0 ); | |
935 | if(shpnt == NULL) { | |
936 | release_region(port_base, 0x10); | |
937 | return NULL; | |
938 | } | |
939 | shpnt->irq = interrupt_level; | |
940 | shpnt->io_port = port_base; | |
1da177e4 LT |
941 | shpnt->n_io_port = 0x10; |
942 | print_banner( shpnt ); | |
943 | ||
944 | /* Log IRQ with kernel */ | |
945 | if (!interrupt_level) { | |
946 | printk(KERN_ERR "scsi: <fdomain> Card Detected, but driver not loaded (no IRQ)\n" ); | |
947 | release_region(port_base, 0x10); | |
948 | return NULL; | |
949 | } else { | |
950 | /* Register the IRQ with the kernel */ | |
951 | ||
952 | retcode = request_irq( interrupt_level, | |
953 | do_fdomain_16x0_intr, pdev?SA_SHIRQ:0, "fdomain", shpnt); | |
954 | ||
955 | if (retcode < 0) { | |
956 | if (retcode == -EINVAL) { | |
957 | printk(KERN_ERR "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level ); | |
958 | printk(KERN_ERR " This shouldn't happen!\n" ); | |
959 | printk(KERN_ERR " Send mail to faith@acm.org\n" ); | |
960 | } else if (retcode == -EBUSY) { | |
961 | printk(KERN_ERR "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level ); | |
962 | printk(KERN_ERR " Please use another IRQ!\n" ); | |
963 | } else { | |
964 | printk(KERN_ERR "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level ); | |
965 | printk(KERN_ERR " This shouldn't happen!\n" ); | |
966 | printk(KERN_ERR " Send mail to faith@acm.org\n" ); | |
967 | } | |
968 | printk(KERN_ERR "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" ); | |
969 | release_region(port_base, 0x10); | |
970 | return NULL; | |
971 | } | |
972 | } | |
973 | return shpnt; | |
974 | } | |
975 | ||
976 | static int fdomain_16x0_detect(struct scsi_host_template *tpnt) | |
977 | { | |
978 | if (fdomain) | |
979 | fdomain_setup(fdomain); | |
980 | return (__fdomain_16x0_detect(tpnt) != NULL); | |
981 | } | |
982 | ||
983 | static const char *fdomain_16x0_info( struct Scsi_Host *ignore ) | |
984 | { | |
985 | static char buffer[128]; | |
986 | char *pt; | |
987 | ||
988 | strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" ); | |
989 | if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */ | |
990 | strcat( buffer, strchr( VERSION, ':' ) + 1 ); | |
991 | pt = strrchr( buffer, '$') - 1; | |
992 | if (!pt) /* Stripped RCS Revision string? */ | |
993 | pt = buffer + strlen( buffer ) - 1; | |
994 | if (*pt != ' ') | |
995 | ++pt; | |
996 | *pt = '\0'; | |
997 | } else { /* Assume VERSION is a number */ | |
998 | strcat( buffer, " " VERSION ); | |
999 | } | |
1000 | ||
1001 | return buffer; | |
1002 | } | |
1003 | ||
1004 | #if 0 | |
1005 | static int fdomain_arbitrate( void ) | |
1006 | { | |
1007 | int status = 0; | |
1008 | unsigned long timeout; | |
1009 | ||
1010 | #if EVERY_ACCESS | |
1011 | printk( "fdomain_arbitrate()\n" ); | |
1012 | #endif | |
1013 | ||
1014 | outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */ | |
1015 | outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */ | |
1016 | outb(0x04 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */ | |
1017 | ||
1018 | timeout = 500; | |
1019 | do { | |
1020 | status = inb(port_base + TMC_Status); /* Read adapter status */ | |
1021 | if (status & 0x02) /* Arbitration complete */ | |
1022 | return 0; | |
1023 | mdelay(1); /* Wait one millisecond */ | |
1024 | } while (--timeout); | |
1025 | ||
1026 | /* Make bus idle */ | |
1027 | fdomain_make_bus_idle(); | |
1028 | ||
1029 | #if EVERY_ACCESS | |
1030 | printk( "Arbitration failed, status = %x\n", status ); | |
1031 | #endif | |
1032 | #if ERRORS_ONLY | |
1033 | printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status ); | |
1034 | #endif | |
1035 | return 1; | |
1036 | } | |
1037 | #endif | |
1038 | ||
1039 | static int fdomain_select( int target ) | |
1040 | { | |
1041 | int status; | |
1042 | unsigned long timeout; | |
1043 | #if ERRORS_ONLY | |
1044 | static int flag = 0; | |
1045 | #endif | |
1046 | ||
1047 | outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */ | |
1048 | outb(adapter_mask | (1 << target), port_base + SCSI_Data_NoACK); | |
1049 | ||
1050 | /* Stop arbitration and enable parity */ | |
1051 | outb(PARITY_MASK, port_base + TMC_Cntl); | |
1052 | ||
1053 | timeout = 350; /* 350 msec */ | |
1054 | ||
1055 | do { | |
1056 | status = inb(port_base + SCSI_Status); /* Read adapter status */ | |
1057 | if (status & 1) { /* Busy asserted */ | |
1058 | /* Enable SCSI Bus (on error, should make bus idle with 0) */ | |
1059 | outb(0x80, port_base + SCSI_Cntl); | |
1060 | return 0; | |
1061 | } | |
1062 | mdelay(1); /* wait one msec */ | |
1063 | } while (--timeout); | |
1064 | /* Make bus idle */ | |
1065 | fdomain_make_bus_idle(); | |
1066 | #if EVERY_ACCESS | |
1067 | if (!target) printk( "Selection failed\n" ); | |
1068 | #endif | |
1069 | #if ERRORS_ONLY | |
1070 | if (!target) { | |
1071 | if (!flag) /* Skip first failure for all chips. */ | |
1072 | ++flag; | |
1073 | else | |
1074 | printk( "scsi: <fdomain> Selection failed\n" ); | |
1075 | } | |
1076 | #endif | |
1077 | return 1; | |
1078 | } | |
1079 | ||
1080 | static void my_done(int error) | |
1081 | { | |
1082 | if (in_command) { | |
1083 | in_command = 0; | |
1084 | outb(0x00, port_base + Interrupt_Cntl); | |
1085 | fdomain_make_bus_idle(); | |
1086 | current_SC->result = error; | |
1087 | if (current_SC->scsi_done) | |
1088 | current_SC->scsi_done( current_SC ); | |
1089 | else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" ); | |
1090 | } else { | |
1091 | panic( "scsi: <fdomain> my_done() called outside of command\n" ); | |
1092 | } | |
1093 | #if DEBUG_RACE | |
1094 | in_interrupt_flag = 0; | |
1095 | #endif | |
1096 | } | |
1097 | ||
1098 | static irqreturn_t do_fdomain_16x0_intr(int irq, void *dev_id, | |
1099 | struct pt_regs * regs ) | |
1100 | { | |
1101 | unsigned long flags; | |
1102 | int status; | |
1103 | int done = 0; | |
1104 | unsigned data_count; | |
1105 | ||
1106 | /* The fdomain_16x0_intr is only called via | |
1107 | the interrupt handler. The goal of the | |
1108 | sti() here is to allow other | |
1109 | interruptions while this routine is | |
1110 | running. */ | |
1111 | ||
1112 | /* Check for other IRQ sources */ | |
1113 | if ((inb(port_base + TMC_Status) & 0x01) == 0) | |
1114 | return IRQ_NONE; | |
1115 | ||
1116 | /* It is our IRQ */ | |
1117 | outb(0x00, port_base + Interrupt_Cntl); | |
1118 | ||
1119 | /* We usually have one spurious interrupt after each command. Ignore it. */ | |
1120 | if (!in_command || !current_SC) { /* Spurious interrupt */ | |
1121 | #if EVERY_ACCESS | |
1122 | printk( "Spurious interrupt, in_command = %d, current_SC = %x\n", | |
1123 | in_command, current_SC ); | |
1124 | #endif | |
1125 | return IRQ_NONE; | |
1126 | } | |
1127 | ||
1128 | /* Abort calls my_done, so we do nothing here. */ | |
1129 | if (current_SC->SCp.phase & aborted) { | |
1130 | #if DEBUG_ABORT | |
1131 | printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" ); | |
1132 | #endif | |
1133 | /* | |
1134 | return IRQ_HANDLED; */ | |
1135 | } | |
1136 | ||
1137 | #if DEBUG_RACE | |
1138 | ++in_interrupt_flag; | |
1139 | #endif | |
1140 | ||
1141 | if (current_SC->SCp.phase & in_arbitration) { | |
1142 | status = inb(port_base + TMC_Status); /* Read adapter status */ | |
1143 | if (!(status & 0x02)) { | |
1144 | #if EVERY_ACCESS | |
1145 | printk( " AFAIL " ); | |
1146 | #endif | |
1147 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); | |
1148 | my_done( DID_BUS_BUSY << 16 ); | |
1149 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); | |
1150 | return IRQ_HANDLED; | |
1151 | } | |
1152 | current_SC->SCp.phase = in_selection; | |
1153 | ||
1154 | outb(0x40 | FIFO_COUNT, port_base + Interrupt_Cntl); | |
1155 | ||
1156 | outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */ | |
1157 | outb(adapter_mask | (1 << current_SC->device->id), port_base + SCSI_Data_NoACK); | |
1158 | ||
1159 | /* Stop arbitration and enable parity */ | |
1160 | outb(0x10 | PARITY_MASK, port_base + TMC_Cntl); | |
1161 | #if DEBUG_RACE | |
1162 | in_interrupt_flag = 0; | |
1163 | #endif | |
1164 | return IRQ_HANDLED; | |
1165 | } else if (current_SC->SCp.phase & in_selection) { | |
1166 | status = inb(port_base + SCSI_Status); | |
1167 | if (!(status & 0x01)) { | |
1168 | /* Try again, for slow devices */ | |
1169 | if (fdomain_select( current_SC->device->id )) { | |
1170 | #if EVERY_ACCESS | |
1171 | printk( " SFAIL " ); | |
1172 | #endif | |
1173 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); | |
1174 | my_done( DID_NO_CONNECT << 16 ); | |
1175 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); | |
1176 | return IRQ_HANDLED; | |
1177 | } else { | |
1178 | #if EVERY_ACCESS | |
1179 | printk( " AltSel " ); | |
1180 | #endif | |
1181 | /* Stop arbitration and enable parity */ | |
1182 | outb(0x10 | PARITY_MASK, port_base + TMC_Cntl); | |
1183 | } | |
1184 | } | |
1185 | current_SC->SCp.phase = in_other; | |
1186 | outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl); | |
1187 | outb(0x80, port_base + SCSI_Cntl); | |
1188 | #if DEBUG_RACE | |
1189 | in_interrupt_flag = 0; | |
1190 | #endif | |
1191 | return IRQ_HANDLED; | |
1192 | } | |
1193 | ||
1194 | /* current_SC->SCp.phase == in_other: this is the body of the routine */ | |
1195 | ||
1196 | status = inb(port_base + SCSI_Status); | |
1197 | ||
1198 | if (status & 0x10) { /* REQ */ | |
1199 | ||
1200 | switch (status & 0x0e) { | |
1201 | ||
1202 | case 0x08: /* COMMAND OUT */ | |
1203 | outb(current_SC->cmnd[current_SC->SCp.sent_command++], | |
1204 | port_base + Write_SCSI_Data); | |
1205 | #if EVERY_ACCESS | |
1206 | printk( "CMD = %x,", | |
1207 | current_SC->cmnd[ current_SC->SCp.sent_command - 1] ); | |
1208 | #endif | |
1209 | break; | |
1210 | case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */ | |
1211 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { | |
1212 | current_SC->SCp.have_data_in = -1; | |
1213 | outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl); | |
1214 | } | |
1215 | break; | |
1216 | case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */ | |
1217 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { | |
1218 | current_SC->SCp.have_data_in = 1; | |
1219 | outb(0x90 | PARITY_MASK, port_base + TMC_Cntl); | |
1220 | } | |
1221 | break; | |
1222 | case 0x0c: /* STATUS IN */ | |
1223 | current_SC->SCp.Status = inb(port_base + Read_SCSI_Data); | |
1224 | #if EVERY_ACCESS | |
1225 | printk( "Status = %x, ", current_SC->SCp.Status ); | |
1226 | #endif | |
1227 | #if ERRORS_ONLY | |
1228 | if (current_SC->SCp.Status | |
1229 | && current_SC->SCp.Status != 2 | |
1230 | && current_SC->SCp.Status != 8) { | |
1231 | printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n", | |
1232 | current_SC->device->id, | |
1233 | current_SC->cmnd[0], | |
1234 | current_SC->SCp.Status ); | |
1235 | } | |
1236 | #endif | |
1237 | break; | |
1238 | case 0x0a: /* MESSAGE OUT */ | |
1239 | outb(MESSAGE_REJECT, port_base + Write_SCSI_Data); /* Reject */ | |
1240 | break; | |
1241 | case 0x0e: /* MESSAGE IN */ | |
1242 | current_SC->SCp.Message = inb(port_base + Read_SCSI_Data); | |
1243 | #if EVERY_ACCESS | |
1244 | printk( "Message = %x, ", current_SC->SCp.Message ); | |
1245 | #endif | |
1246 | if (!current_SC->SCp.Message) ++done; | |
1247 | #if DEBUG_MESSAGES || EVERY_ACCESS | |
1248 | if (current_SC->SCp.Message) { | |
1249 | printk( "scsi: <fdomain> message = %x\n", | |
1250 | current_SC->SCp.Message ); | |
1251 | } | |
1252 | #endif | |
1253 | break; | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | if (chip == tmc1800 && !current_SC->SCp.have_data_in | |
1258 | && (current_SC->SCp.sent_command >= current_SC->cmd_len)) { | |
1259 | ||
1260 | if(current_SC->sc_data_direction == DMA_TO_DEVICE) | |
1261 | { | |
1262 | current_SC->SCp.have_data_in = -1; | |
1263 | outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl); | |
1264 | } | |
1265 | else | |
1266 | { | |
1267 | current_SC->SCp.have_data_in = 1; | |
1268 | outb(0x90 | PARITY_MASK, port_base + TMC_Cntl); | |
1269 | } | |
1270 | } | |
1271 | ||
1272 | if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */ | |
1273 | while ((data_count = FIFO_Size - inw(port_base + FIFO_Data_Count)) > 512) { | |
1274 | #if EVERY_ACCESS | |
1275 | printk( "DC=%d, ", data_count ) ; | |
1276 | #endif | |
1277 | if (data_count > current_SC->SCp.this_residual) | |
1278 | data_count = current_SC->SCp.this_residual; | |
1279 | if (data_count > 0) { | |
1280 | #if EVERY_ACCESS | |
1281 | printk( "%d OUT, ", data_count ); | |
1282 | #endif | |
1283 | if (data_count == 1) { | |
1284 | outb(*current_SC->SCp.ptr++, port_base + Write_FIFO); | |
1285 | --current_SC->SCp.this_residual; | |
1286 | } else { | |
1287 | data_count >>= 1; | |
1288 | outsw(port_base + Write_FIFO, current_SC->SCp.ptr, data_count); | |
1289 | current_SC->SCp.ptr += 2 * data_count; | |
1290 | current_SC->SCp.this_residual -= 2 * data_count; | |
1291 | } | |
1292 | } | |
1293 | if (!current_SC->SCp.this_residual) { | |
1294 | if (current_SC->SCp.buffers_residual) { | |
1295 | --current_SC->SCp.buffers_residual; | |
1296 | ++current_SC->SCp.buffer; | |
1297 | current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset; | |
1298 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; | |
1299 | } else | |
1300 | break; | |
1301 | } | |
1302 | } | |
1303 | } | |
1304 | ||
1305 | if (current_SC->SCp.have_data_in == 1) { /* DATA IN */ | |
1306 | while ((data_count = inw(port_base + FIFO_Data_Count)) > 0) { | |
1307 | #if EVERY_ACCESS | |
1308 | printk( "DC=%d, ", data_count ); | |
1309 | #endif | |
1310 | if (data_count > current_SC->SCp.this_residual) | |
1311 | data_count = current_SC->SCp.this_residual; | |
1312 | if (data_count) { | |
1313 | #if EVERY_ACCESS | |
1314 | printk( "%d IN, ", data_count ); | |
1315 | #endif | |
1316 | if (data_count == 1) { | |
1317 | *current_SC->SCp.ptr++ = inb(port_base + Read_FIFO); | |
1318 | --current_SC->SCp.this_residual; | |
1319 | } else { | |
1320 | data_count >>= 1; /* Number of words */ | |
1321 | insw(port_base + Read_FIFO, current_SC->SCp.ptr, data_count); | |
1322 | current_SC->SCp.ptr += 2 * data_count; | |
1323 | current_SC->SCp.this_residual -= 2 * data_count; | |
1324 | } | |
1325 | } | |
1326 | if (!current_SC->SCp.this_residual | |
1327 | && current_SC->SCp.buffers_residual) { | |
1328 | --current_SC->SCp.buffers_residual; | |
1329 | ++current_SC->SCp.buffer; | |
1330 | current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset; | |
1331 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; | |
1332 | } | |
1333 | } | |
1334 | } | |
1335 | ||
1336 | if (done) { | |
1337 | #if EVERY_ACCESS | |
1338 | printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in ); | |
1339 | #endif | |
1340 | ||
1341 | #if ERRORS_ONLY | |
1342 | if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) { | |
1343 | if ((unsigned char)(*((char *)current_SC->request_buffer+2)) & 0x0f) { | |
1344 | unsigned char key; | |
1345 | unsigned char code; | |
1346 | unsigned char qualifier; | |
1347 | ||
1348 | key = (unsigned char)(*((char *)current_SC->request_buffer + 2)) | |
1349 | & 0x0f; | |
1350 | code = (unsigned char)(*((char *)current_SC->request_buffer + 12)); | |
1351 | qualifier = (unsigned char)(*((char *)current_SC->request_buffer | |
1352 | + 13)); | |
1353 | ||
1354 | if (key != UNIT_ATTENTION | |
1355 | && !(key == NOT_READY | |
1356 | && code == 0x04 | |
1357 | && (!qualifier || qualifier == 0x02 || qualifier == 0x01)) | |
1358 | && !(key == ILLEGAL_REQUEST && (code == 0x25 | |
1359 | || code == 0x24 | |
1360 | || !code))) | |
1361 | ||
1362 | printk( "scsi: <fdomain> REQUEST SENSE" | |
1363 | " Key = %x, Code = %x, Qualifier = %x\n", | |
1364 | key, code, qualifier ); | |
1365 | } | |
1366 | } | |
1367 | #endif | |
1368 | #if EVERY_ACCESS | |
1369 | printk( "BEFORE MY_DONE. . ." ); | |
1370 | #endif | |
1371 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); | |
1372 | my_done( (current_SC->SCp.Status & 0xff) | |
1373 | | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) ); | |
1374 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); | |
1375 | #if EVERY_ACCESS | |
1376 | printk( "RETURNING.\n" ); | |
1377 | #endif | |
1378 | ||
1379 | } else { | |
1380 | if (current_SC->SCp.phase & disconnect) { | |
1381 | outb(0xd0 | FIFO_COUNT, port_base + Interrupt_Cntl); | |
1382 | outb(0x00, port_base + SCSI_Cntl); | |
1383 | } else { | |
1384 | outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl); | |
1385 | } | |
1386 | } | |
1387 | #if DEBUG_RACE | |
1388 | in_interrupt_flag = 0; | |
1389 | #endif | |
1390 | return IRQ_HANDLED; | |
1391 | } | |
1392 | ||
1393 | static int fdomain_16x0_queue(struct scsi_cmnd *SCpnt, | |
1394 | void (*done)(struct scsi_cmnd *)) | |
1395 | { | |
1396 | if (in_command) { | |
1397 | panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" ); | |
1398 | } | |
1399 | #if EVERY_ACCESS | |
1400 | printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n", | |
1401 | SCpnt->target, | |
1402 | *(unsigned char *)SCpnt->cmnd, | |
1403 | SCpnt->use_sg, | |
1404 | SCpnt->request_bufflen ); | |
1405 | #endif | |
1406 | ||
1407 | fdomain_make_bus_idle(); | |
1408 | ||
1409 | current_SC = SCpnt; /* Save this for the done function */ | |
1410 | current_SC->scsi_done = done; | |
1411 | ||
1412 | /* Initialize static data */ | |
1413 | ||
1414 | if (current_SC->use_sg) { | |
1415 | current_SC->SCp.buffer = | |
1416 | (struct scatterlist *)current_SC->request_buffer; | |
1417 | current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset; | |
1418 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; | |
1419 | current_SC->SCp.buffers_residual = current_SC->use_sg - 1; | |
1420 | } else { | |
1421 | current_SC->SCp.ptr = (char *)current_SC->request_buffer; | |
1422 | current_SC->SCp.this_residual = current_SC->request_bufflen; | |
1423 | current_SC->SCp.buffer = NULL; | |
1424 | current_SC->SCp.buffers_residual = 0; | |
1425 | } | |
1426 | ||
1427 | ||
1428 | current_SC->SCp.Status = 0; | |
1429 | current_SC->SCp.Message = 0; | |
1430 | current_SC->SCp.have_data_in = 0; | |
1431 | current_SC->SCp.sent_command = 0; | |
1432 | current_SC->SCp.phase = in_arbitration; | |
1433 | ||
1434 | /* Start arbitration */ | |
1435 | outb(0x00, port_base + Interrupt_Cntl); | |
1436 | outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */ | |
1437 | outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */ | |
1438 | ++in_command; | |
1439 | outb(0x20, port_base + Interrupt_Cntl); | |
1440 | outb(0x14 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */ | |
1441 | ||
1442 | return 0; | |
1443 | } | |
1444 | ||
1445 | #if DEBUG_ABORT | |
1446 | static void print_info(struct scsi_cmnd *SCpnt) | |
1447 | { | |
1448 | unsigned int imr; | |
1449 | unsigned int irr; | |
1450 | unsigned int isr; | |
1451 | ||
1452 | if (!SCpnt || !SCpnt->device || !SCpnt->device->host) { | |
1453 | printk(KERN_WARNING "scsi: <fdomain> Cannot provide detailed information\n"); | |
1454 | return; | |
1455 | } | |
1456 | ||
1457 | printk(KERN_INFO "%s\n", fdomain_16x0_info( SCpnt->device->host ) ); | |
1458 | print_banner(SCpnt->device->host); | |
1459 | switch (SCpnt->SCp.phase) { | |
1460 | case in_arbitration: printk("arbitration"); break; | |
1461 | case in_selection: printk("selection"); break; | |
1462 | case in_other: printk("other"); break; | |
1463 | default: printk("unknown"); break; | |
1464 | } | |
1465 | ||
1466 | printk( " (%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n", | |
1467 | SCpnt->SCp.phase, | |
1468 | SCpnt->device->id, | |
1469 | *(unsigned char *)SCpnt->cmnd, | |
1470 | SCpnt->use_sg, | |
1471 | SCpnt->request_bufflen ); | |
1472 | printk( "sent_command = %d, have_data_in = %d, timeout = %d\n", | |
1473 | SCpnt->SCp.sent_command, | |
1474 | SCpnt->SCp.have_data_in, | |
1475 | SCpnt->timeout ); | |
1476 | #if DEBUG_RACE | |
1477 | printk( "in_interrupt_flag = %d\n", in_interrupt_flag ); | |
1478 | #endif | |
1479 | ||
1480 | imr = (inb( 0x0a1 ) << 8) + inb( 0x21 ); | |
1481 | outb( 0x0a, 0xa0 ); | |
1482 | irr = inb( 0xa0 ) << 8; | |
1483 | outb( 0x0a, 0x20 ); | |
1484 | irr += inb( 0x20 ); | |
1485 | outb( 0x0b, 0xa0 ); | |
1486 | isr = inb( 0xa0 ) << 8; | |
1487 | outb( 0x0b, 0x20 ); | |
1488 | isr += inb( 0x20 ); | |
1489 | ||
1490 | /* Print out interesting information */ | |
1491 | printk( "IMR = 0x%04x", imr ); | |
1492 | if (imr & (1 << interrupt_level)) | |
1493 | printk( " (masked)" ); | |
1494 | printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr ); | |
1495 | ||
1496 | printk( "SCSI Status = 0x%02x\n", inb(port_base + SCSI_Status)); | |
1497 | printk( "TMC Status = 0x%02x", inb(port_base + TMC_Status)); | |
1498 | if (inb((port_base + TMC_Status) & 1)) | |
1499 | printk( " (interrupt)" ); | |
1500 | printk( "\n" ); | |
1501 | printk("Interrupt Status = 0x%02x", inb(port_base + Interrupt_Status)); | |
1502 | if (inb(port_base + Interrupt_Status) & 0x08) | |
1503 | printk( " (enabled)" ); | |
1504 | printk( "\n" ); | |
1505 | if (chip == tmc18c50 || chip == tmc18c30) { | |
1506 | printk("FIFO Status = 0x%02x\n", inb(port_base + FIFO_Status)); | |
1507 | printk( "Int. Condition = 0x%02x\n", | |
1508 | inb( port_base + Interrupt_Cond ) ); | |
1509 | } | |
1510 | printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) ); | |
1511 | if (chip == tmc18c50 || chip == tmc18c30) | |
1512 | printk( "Configuration 2 = 0x%02x\n", | |
1513 | inb( port_base + Configuration2 ) ); | |
1514 | } | |
1515 | #endif | |
1516 | ||
1517 | static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt) | |
1518 | { | |
1519 | #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT | |
1520 | printk( "scsi: <fdomain> abort " ); | |
1521 | #endif | |
1522 | ||
1523 | if (!in_command) { | |
1524 | #if EVERY_ACCESS || ERRORS_ONLY | |
1525 | printk( " (not in command)\n" ); | |
1526 | #endif | |
1527 | return FAILED; | |
1528 | } else printk( "\n" ); | |
1529 | ||
1530 | #if DEBUG_ABORT | |
1531 | print_info( SCpnt ); | |
1532 | #endif | |
1533 | ||
1534 | fdomain_make_bus_idle(); | |
1535 | current_SC->SCp.phase |= aborted; | |
1536 | current_SC->result = DID_ABORT << 16; | |
1537 | ||
1538 | /* Aborts are not done well. . . */ | |
1539 | my_done(DID_ABORT << 16); | |
1540 | return SUCCESS; | |
1541 | } | |
1542 | ||
1543 | int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt) | |
1544 | { | |
68b3aa7c JG |
1545 | unsigned long flags; |
1546 | ||
1547 | local_irq_save(flags); | |
1548 | ||
1da177e4 LT |
1549 | outb(1, port_base + SCSI_Cntl); |
1550 | do_pause( 2 ); | |
1551 | outb(0, port_base + SCSI_Cntl); | |
1552 | do_pause( 115 ); | |
1553 | outb(0, port_base + SCSI_Mode_Cntl); | |
1554 | outb(PARITY_MASK, port_base + TMC_Cntl); | |
68b3aa7c JG |
1555 | |
1556 | local_irq_restore(flags); | |
1da177e4 LT |
1557 | return SUCCESS; |
1558 | } | |
1559 | ||
1560 | static int fdomain_16x0_biosparam(struct scsi_device *sdev, | |
1561 | struct block_device *bdev, | |
1562 | sector_t capacity, int *info_array) | |
1563 | { | |
1564 | int drive; | |
1565 | int size = capacity; | |
1566 | unsigned long offset; | |
1567 | struct drive_info { | |
1568 | unsigned short cylinders; | |
1569 | unsigned char heads; | |
1570 | unsigned char sectors; | |
1571 | } i; | |
1572 | ||
1573 | /* NOTES: | |
1574 | The RAM area starts at 0x1f00 from the bios_base address. | |
1575 | ||
1576 | For BIOS Version 2.0: | |
1577 | ||
1578 | The drive parameter table seems to start at 0x1f30. | |
1579 | The first byte's purpose is not known. | |
1580 | Next is the cylinder, head, and sector information. | |
1581 | The last 4 bytes appear to be the drive's size in sectors. | |
1582 | The other bytes in the drive parameter table are unknown. | |
1583 | If anyone figures them out, please send me mail, and I will | |
1584 | update these notes. | |
1585 | ||
1586 | Tape drives do not get placed in this table. | |
1587 | ||
1588 | There is another table at 0x1fea: | |
1589 | If the byte is 0x01, then the SCSI ID is not in use. | |
1590 | If the byte is 0x18 or 0x48, then the SCSI ID is in use, | |
1591 | although tapes don't seem to be in this table. I haven't | |
1592 | seen any other numbers (in a limited sample). | |
1593 | ||
1594 | 0x1f2d is a drive count (i.e., not including tapes) | |
1595 | ||
1596 | The table at 0x1fcc are I/O ports addresses for the various | |
1597 | operations. I calculate these by hand in this driver code. | |
1598 | ||
1599 | ||
1600 | ||
1601 | For the ISA-200S version of BIOS Version 2.0: | |
1602 | ||
1603 | The drive parameter table starts at 0x1f33. | |
1604 | ||
1605 | WARNING: Assume that the table entry is 25 bytes long. Someone needs | |
1606 | to check this for the Quantum ISA-200S card. | |
1607 | ||
1608 | ||
1609 | ||
1610 | For BIOS Version 3.2: | |
1611 | ||
1612 | The drive parameter table starts at 0x1f70. Each entry is | |
1613 | 0x0a bytes long. Heads are one less than we need to report. | |
1614 | */ | |
1615 | ||
1616 | if (MAJOR(bdev->bd_dev) != SCSI_DISK0_MAJOR) { | |
1617 | printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks"); | |
1618 | return 0; | |
1619 | } | |
1620 | drive = MINOR(bdev->bd_dev) >> 4; | |
1621 | ||
1622 | if (bios_major == 2) { | |
1623 | switch (Quantum) { | |
1624 | case 2: /* ISA_200S */ | |
1625 | /* The value of 25 has never been verified. | |
1626 | It should probably be 15. */ | |
1627 | offset = 0x1f33 + drive * 25; | |
1628 | break; | |
1629 | case 3: /* ISA_250MG */ | |
1630 | offset = 0x1f36 + drive * 15; | |
1631 | break; | |
1632 | case 4: /* ISA_200S (another one) */ | |
1633 | offset = 0x1f34 + drive * 15; | |
1634 | break; | |
1635 | default: | |
1636 | offset = 0x1f31 + drive * 25; | |
1637 | break; | |
1638 | } | |
1639 | memcpy_fromio( &i, bios_mem + offset, sizeof( struct drive_info ) ); | |
1640 | info_array[0] = i.heads; | |
1641 | info_array[1] = i.sectors; | |
1642 | info_array[2] = i.cylinders; | |
1643 | } else if (bios_major == 3 | |
1644 | && bios_minor >= 0 | |
1645 | && bios_minor < 4) { /* 3.0 and 3.2 BIOS */ | |
1646 | memcpy_fromio( &i, bios_mem + 0x1f71 + drive * 10, | |
1647 | sizeof( struct drive_info ) ); | |
1648 | info_array[0] = i.heads + 1; | |
1649 | info_array[1] = i.sectors; | |
1650 | info_array[2] = i.cylinders; | |
1651 | } else { /* 3.4 BIOS (and up?) */ | |
1652 | /* This algorithm was provided by Future Domain (much thanks!). */ | |
1653 | unsigned char *p = scsi_bios_ptable(bdev); | |
1654 | ||
1655 | if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */ | |
1656 | && p[4]) { /* Partition type */ | |
1657 | ||
1658 | /* The partition table layout is as follows: | |
1659 | ||
1660 | Start: 0x1b3h | |
1661 | Offset: 0 = partition status | |
1662 | 1 = starting head | |
1663 | 2 = starting sector and cylinder (word, encoded) | |
1664 | 4 = partition type | |
1665 | 5 = ending head | |
1666 | 6 = ending sector and cylinder (word, encoded) | |
1667 | 8 = starting absolute sector (double word) | |
1668 | c = number of sectors (double word) | |
1669 | Signature: 0x1fe = 0x55aa | |
1670 | ||
1671 | So, this algorithm assumes: | |
1672 | 1) the first partition table is in use, | |
1673 | 2) the data in the first entry is correct, and | |
1674 | 3) partitions never divide cylinders | |
1675 | ||
1676 | Note that (1) may be FALSE for NetBSD (and other BSD flavors), | |
1677 | as well as for Linux. Note also, that Linux doesn't pay any | |
1678 | attention to the fields that are used by this algorithm -- it | |
1679 | only uses the absolute sector data. Recent versions of Linux's | |
1680 | fdisk(1) will fill this data in correctly, and forthcoming | |
1681 | versions will check for consistency. | |
1682 | ||
1683 | Checking for a non-zero partition type is not part of the | |
1684 | Future Domain algorithm, but it seemed to be a reasonable thing | |
1685 | to do, especially in the Linux and BSD worlds. */ | |
1686 | ||
1687 | info_array[0] = p[5] + 1; /* heads */ | |
1688 | info_array[1] = p[6] & 0x3f; /* sectors */ | |
1689 | } else { | |
1690 | ||
1691 | /* Note that this new method guarantees that there will always be | |
1692 | less than 1024 cylinders on a platter. This is good for drives | |
1693 | up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */ | |
1694 | ||
1695 | if ((unsigned int)size >= 0x7e0000U) { | |
1696 | info_array[0] = 0xff; /* heads = 255 */ | |
1697 | info_array[1] = 0x3f; /* sectors = 63 */ | |
1698 | } else if ((unsigned int)size >= 0x200000U) { | |
1699 | info_array[0] = 0x80; /* heads = 128 */ | |
1700 | info_array[1] = 0x3f; /* sectors = 63 */ | |
1701 | } else { | |
1702 | info_array[0] = 0x40; /* heads = 64 */ | |
1703 | info_array[1] = 0x20; /* sectors = 32 */ | |
1704 | } | |
1705 | } | |
1706 | /* For both methods, compute the cylinders */ | |
1707 | info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] ); | |
1708 | kfree(p); | |
1709 | } | |
1710 | ||
1711 | return 0; | |
1712 | } | |
1713 | ||
1714 | static int fdomain_16x0_release(struct Scsi_Host *shpnt) | |
1715 | { | |
1716 | if (shpnt->irq) | |
1717 | free_irq(shpnt->irq, shpnt); | |
1718 | if (shpnt->io_port && shpnt->n_io_port) | |
1719 | release_region(shpnt->io_port, shpnt->n_io_port); | |
1720 | return 0; | |
1721 | } | |
1722 | ||
1723 | struct scsi_host_template fdomain_driver_template = { | |
1724 | .module = THIS_MODULE, | |
1725 | .name = "fdomain", | |
1726 | .proc_name = "fdomain", | |
1727 | .detect = fdomain_16x0_detect, | |
1728 | .info = fdomain_16x0_info, | |
1729 | .queuecommand = fdomain_16x0_queue, | |
1730 | .eh_abort_handler = fdomain_16x0_abort, | |
1731 | .eh_bus_reset_handler = fdomain_16x0_bus_reset, | |
1732 | .bios_param = fdomain_16x0_biosparam, | |
1733 | .release = fdomain_16x0_release, | |
1734 | .can_queue = 1, | |
1735 | .this_id = 6, | |
1736 | .sg_tablesize = 64, | |
1737 | .cmd_per_lun = 1, | |
1738 | .use_clustering = DISABLE_CLUSTERING, | |
1739 | }; | |
1740 | ||
1741 | #ifndef PCMCIA | |
1742 | #define driver_template fdomain_driver_template | |
1743 | #include "scsi_module.c" | |
1744 | #endif |