Root/
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> |
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/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> |
284 | |
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 | #ifndef PCMCIA |
295 | MODULE_AUTHOR("Rickard E. Faith"); |
296 | MODULE_DESCRIPTION("Future domain SCSI driver"); |
297 | MODULE_LICENSE("GPL"); |
298 | #endif |
299 | |
300 | |
301 | #define VERSION "$Revision: 5.51 $" |
302 | |
303 | /* START OF USER DEFINABLE OPTIONS */ |
304 | |
305 | #define DEBUG 0 /* Enable debugging output */ |
306 | #define ENABLE_PARITY 1 /* Enable SCSI Parity */ |
307 | #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */ |
308 | |
309 | /* END OF USER DEFINABLE OPTIONS */ |
310 | |
311 | #if DEBUG |
312 | #define EVERY_ACCESS 0 /* Write a line on every scsi access */ |
313 | #define ERRORS_ONLY 1 /* Only write a line if there is an error */ |
314 | #define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */ |
315 | #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */ |
316 | #define DEBUG_ABORT 1 /* Debug abort() routine */ |
317 | #define DEBUG_RESET 1 /* Debug reset() routine */ |
318 | #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */ |
319 | #else |
320 | #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */ |
321 | #define ERRORS_ONLY 0 |
322 | #define DEBUG_DETECT 0 |
323 | #define DEBUG_MESSAGES 0 |
324 | #define DEBUG_ABORT 0 |
325 | #define DEBUG_RESET 0 |
326 | #define DEBUG_RACE 0 |
327 | #endif |
328 | |
329 | /* Errors are reported on the line, so we don't need to report them again */ |
330 | #if EVERY_ACCESS |
331 | #undef ERRORS_ONLY |
332 | #define ERRORS_ONLY 0 |
333 | #endif |
334 | |
335 | #if ENABLE_PARITY |
336 | #define PARITY_MASK 0x08 |
337 | #else |
338 | #define PARITY_MASK 0x00 |
339 | #endif |
340 | |
341 | enum chip_type { |
342 | unknown = 0x00, |
343 | tmc1800 = 0x01, |
344 | tmc18c50 = 0x02, |
345 | tmc18c30 = 0x03, |
346 | }; |
347 | |
348 | enum { |
349 | in_arbitration = 0x02, |
350 | in_selection = 0x04, |
351 | in_other = 0x08, |
352 | disconnect = 0x10, |
353 | aborted = 0x20, |
354 | sent_ident = 0x40, |
355 | }; |
356 | |
357 | enum in_port_type { |
358 | Read_SCSI_Data = 0, |
359 | SCSI_Status = 1, |
360 | TMC_Status = 2, |
361 | FIFO_Status = 3, /* tmc18c50/tmc18c30 only */ |
362 | Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */ |
363 | LSB_ID_Code = 5, |
364 | MSB_ID_Code = 6, |
365 | Read_Loopback = 7, |
366 | SCSI_Data_NoACK = 8, |
367 | Interrupt_Status = 9, |
368 | Configuration1 = 10, |
369 | Configuration2 = 11, /* tmc18c50/tmc18c30 only */ |
370 | Read_FIFO = 12, |
371 | FIFO_Data_Count = 14 |
372 | }; |
373 | |
374 | enum out_port_type { |
375 | Write_SCSI_Data = 0, |
376 | SCSI_Cntl = 1, |
377 | Interrupt_Cntl = 2, |
378 | SCSI_Mode_Cntl = 3, |
379 | TMC_Cntl = 4, |
380 | Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */ |
381 | Write_Loopback = 7, |
382 | IO_Control = 11, /* tmc18c30 only */ |
383 | Write_FIFO = 12 |
384 | }; |
385 | |
386 | /* .bss will zero all the static variables below */ |
387 | static int port_base; |
388 | static unsigned long bios_base; |
389 | static void __iomem * bios_mem; |
390 | static int bios_major; |
391 | static int bios_minor; |
392 | static int PCI_bus; |
393 | #ifdef CONFIG_PCI |
394 | static struct pci_dev *PCI_dev; |
395 | #endif |
396 | static int Quantum; /* Quantum board variant */ |
397 | static int interrupt_level; |
398 | static volatile int in_command; |
399 | static struct scsi_cmnd *current_SC; |
400 | static enum chip_type chip = unknown; |
401 | static int adapter_mask; |
402 | static int this_id; |
403 | static int setup_called; |
404 | |
405 | #if DEBUG_RACE |
406 | static volatile int in_interrupt_flag; |
407 | #endif |
408 | |
409 | static int FIFO_Size = 0x2000; /* 8k FIFO for |
410 | pre-tmc18c30 chips */ |
411 | |
412 | static irqreturn_t do_fdomain_16x0_intr( int irq, void *dev_id ); |
413 | /* Allow insmod parameters to be like LILO parameters. For example: |
414 | insmod fdomain fdomain=0x140,11 */ |
415 | static char * fdomain = NULL; |
416 | module_param(fdomain, charp, 0); |
417 | |
418 | #ifndef PCMCIA |
419 | |
420 | static unsigned long addresses[] = { |
421 | 0xc8000, |
422 | 0xca000, |
423 | 0xce000, |
424 | 0xde000, |
425 | 0xcc000, /* Extra addresses for PCI boards */ |
426 | 0xd0000, |
427 | 0xe0000, |
428 | }; |
429 | #define ADDRESS_COUNT ARRAY_SIZE(addresses) |
430 | |
431 | static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; |
432 | #define PORT_COUNT ARRAY_SIZE(ports) |
433 | |
434 | static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; |
435 | |
436 | #endif /* !PCMCIA */ |
437 | |
438 | /* |
439 | |
440 | READ THIS BEFORE YOU ADD A SIGNATURE! |
441 | |
442 | READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME! |
443 | |
444 | READ EVERY WORD, ESPECIALLY THE WORD *NOT* |
445 | |
446 | This driver works *ONLY* for Future Domain cards using the TMC-1800, |
447 | TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670, |
448 | and 1680. These are all 16-bit cards. |
449 | |
450 | The following BIOS signature signatures are for boards which do *NOT* |
451 | work with this driver (these TMC-8xx and TMC-9xx boards may work with the |
452 | Seagate driver): |
453 | |
454 | FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88 |
455 | FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89 |
456 | FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89 |
457 | FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90 |
458 | FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90 |
459 | FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90 |
460 | FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92 |
461 | |
462 | (The cards which do *NOT* work are all 8-bit cards -- although some of |
463 | them have a 16-bit form-factor, the upper 8-bits are used only for IRQs |
464 | and are *NOT* used for data. You can tell the difference by following |
465 | the tracings on the circuit board -- if only the IRQ lines are involved, |
466 | you have a "8-bit" card, and should *NOT* use this driver.) |
467 | |
468 | */ |
469 | |
470 | #ifndef PCMCIA |
471 | |
472 | static struct signature { |
473 | const char *signature; |
474 | int sig_offset; |
475 | int sig_length; |
476 | int major_bios_version; |
477 | int minor_bios_version; |
478 | int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */ |
479 | } signatures[] = { |
480 | /* 1 2 3 4 5 6 */ |
481 | /* 123456789012345678901234567890123456789012345678901234567890 */ |
482 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 }, |
483 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 }, |
484 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 }, |
485 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 }, |
486 | { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 }, |
487 | { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 }, |
488 | { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 }, |
489 | { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 }, |
490 | { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 }, |
491 | { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 }, |
492 | { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 }, |
493 | { "IBM F1 P264/32", 5, 14, 3, -1, 1 }, |
494 | /* This next signature may not be a 3.5 bios */ |
495 | { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 }, |
496 | { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 }, |
497 | { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 }, |
498 | { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 }, |
499 | { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 }, |
500 | { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 }, |
501 | |
502 | /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE |
503 | Also, fix the disk geometry code for your signature and send your |
504 | changes for faith@cs.unc.edu. Above all, do *NOT* change any old |
505 | signatures! |
506 | |
507 | Note that the last line will match a "generic" 18XX bios. Because |
508 | Future Domain has changed the host SCSI ID and/or the location of the |
509 | geometry information in the on-board RAM area for each of the first |
510 | three BIOS's, it is still important to enter a fully qualified |
511 | signature in the table for any new BIOS's (after the host SCSI ID and |
512 | geometry location are verified). */ |
513 | }; |
514 | |
515 | #define SIGNATURE_COUNT ARRAY_SIZE(signatures) |
516 | |
517 | #endif /* !PCMCIA */ |
518 | |
519 | static void print_banner( struct Scsi_Host *shpnt ) |
520 | { |
521 | if (!shpnt) return; /* This won't ever happen */ |
522 | |
523 | if (bios_major < 0 && bios_minor < 0) { |
524 | printk(KERN_INFO "scsi%d: <fdomain> No BIOS; using scsi id %d\n", |
525 | shpnt->host_no, shpnt->this_id); |
526 | } else { |
527 | printk(KERN_INFO "scsi%d: <fdomain> BIOS version ", shpnt->host_no); |
528 | |
529 | if (bios_major >= 0) printk("%d.", bios_major); |
530 | else printk("?."); |
531 | |
532 | if (bios_minor >= 0) printk("%d", bios_minor); |
533 | else printk("?."); |
534 | |
535 | printk( " at 0x%lx using scsi id %d\n", |
536 | bios_base, shpnt->this_id ); |
537 | } |
538 | |
539 | /* If this driver works for later FD PCI |
540 | boards, we will have to modify banner |
541 | for additional PCI cards, but for now if |
542 | it's PCI it's a TMC-3260 - JTM */ |
543 | printk(KERN_INFO "scsi%d: <fdomain> %s chip at 0x%x irq ", |
544 | shpnt->host_no, |
545 | chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")), |
546 | port_base); |
547 | |
548 | if (interrupt_level) |
549 | printk("%d", interrupt_level); |
550 | else |
551 | printk("<none>"); |
552 | |
553 | printk( "\n" ); |
554 | } |
555 | |
556 | int fdomain_setup(char *str) |
557 | { |
558 | int ints[4]; |
559 | |
560 | (void)get_options(str, ARRAY_SIZE(ints), ints); |
561 | |
562 | if (setup_called++ || ints[0] < 2 || ints[0] > 3) { |
563 | printk(KERN_INFO "scsi: <fdomain> Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n"); |
564 | printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n"); |
565 | return 0; |
566 | } |
567 | |
568 | port_base = ints[0] >= 1 ? ints[1] : 0; |
569 | interrupt_level = ints[0] >= 2 ? ints[2] : 0; |
570 | this_id = ints[0] >= 3 ? ints[3] : 0; |
571 | |
572 | bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */ |
573 | ++setup_called; |
574 | return 1; |
575 | } |
576 | |
577 | __setup("fdomain=", fdomain_setup); |
578 | |
579 | |
580 | static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */ |
581 | { |
582 | mdelay(10*amount); |
583 | } |
584 | |
585 | static inline void fdomain_make_bus_idle( void ) |
586 | { |
587 | outb(0, port_base + SCSI_Cntl); |
588 | outb(0, port_base + SCSI_Mode_Cntl); |
589 | if (chip == tmc18c50 || chip == tmc18c30) |
590 | outb(0x21 | PARITY_MASK, port_base + TMC_Cntl); /* Clear forced intr. */ |
591 | else |
592 | outb(0x01 | PARITY_MASK, port_base + TMC_Cntl); |
593 | } |
594 | |
595 | static int fdomain_is_valid_port( int port ) |
596 | { |
597 | #if DEBUG_DETECT |
598 | printk( " (%x%x),", |
599 | inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) ); |
600 | #endif |
601 | |
602 | /* The MCA ID is a unique id for each MCA compatible board. We |
603 | are using ISA boards, but Future Domain provides the MCA ID |
604 | anyway. We can use this ID to ensure that this is a Future |
605 | Domain TMC-1660/TMC-1680. |
606 | */ |
607 | |
608 | if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */ |
609 | if (inb( port + LSB_ID_Code ) != 0x27) return 0; |
610 | if (inb( port + MSB_ID_Code ) != 0x61) return 0; |
611 | chip = tmc1800; |
612 | } else { /* test for 0xe960 id */ |
613 | if (inb( port + MSB_ID_Code ) != 0x60) return 0; |
614 | chip = tmc18c50; |
615 | |
616 | /* Try to toggle 32-bit mode. This only |
617 | works on an 18c30 chip. (User reports |
618 | say this works, so we should switch to |
619 | it in the near future.) */ |
620 | |
621 | outb( 0x80, port + IO_Control ); |
622 | if ((inb( port + Configuration2 ) & 0x80) == 0x80) { |
623 | outb( 0x00, port + IO_Control ); |
624 | if ((inb( port + Configuration2 ) & 0x80) == 0x00) { |
625 | chip = tmc18c30; |
626 | FIFO_Size = 0x800; /* 2k FIFO */ |
627 | } |
628 | } |
629 | /* If that failed, we are an 18c50. */ |
630 | } |
631 | |
632 | return 1; |
633 | } |
634 | |
635 | static int fdomain_test_loopback( void ) |
636 | { |
637 | int i; |
638 | int result; |
639 | |
640 | for (i = 0; i < 255; i++) { |
641 | outb( i, port_base + Write_Loopback ); |
642 | result = inb( port_base + Read_Loopback ); |
643 | if (i != result) |
644 | return 1; |
645 | } |
646 | return 0; |
647 | } |
648 | |
649 | #ifndef PCMCIA |
650 | |
651 | /* fdomain_get_irq assumes that we have a valid MCA ID for a |
652 | TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the |
653 | bios_base matches these ports. If someone was unlucky enough to have |
654 | purchased more than one Future Domain board, then they will have to |
655 | modify this code, as we only detect one board here. [The one with the |
656 | lowest bios_base.] |
657 | |
658 | Note that this routine is only used for systems without a PCI BIOS32 |
659 | (e.g., ISA bus). For PCI bus systems, this routine will likely fail |
660 | unless one of the IRQs listed in the ints array is used by the board. |
661 | Sometimes it is possible to use the computer's BIOS setup screen to |
662 | configure a PCI system so that one of these IRQs will be used by the |
663 | Future Domain card. */ |
664 | |
665 | static int fdomain_get_irq( int base ) |
666 | { |
667 | int options = inb(base + Configuration1); |
668 | |
669 | #if DEBUG_DETECT |
670 | printk("scsi: <fdomain> Options = %x\n", options); |
671 | #endif |
672 | |
673 | /* Check for board with lowest bios_base -- |
674 | this isn't valid for the 18c30 or for |
675 | boards on the PCI bus, so just assume we |
676 | have the right board. */ |
677 | |
678 | if (chip != tmc18c30 && !PCI_bus && addresses[(options & 0xc0) >> 6 ] != bios_base) |
679 | return 0; |
680 | return ints[(options & 0x0e) >> 1]; |
681 | } |
682 | |
683 | static int fdomain_isa_detect( int *irq, int *iobase ) |
684 | { |
685 | int i, j; |
686 | int base = 0xdeadbeef; |
687 | int flag = 0; |
688 | |
689 | #if DEBUG_DETECT |
690 | printk( "scsi: <fdomain> fdomain_isa_detect:" ); |
691 | #endif |
692 | |
693 | for (i = 0; i < ADDRESS_COUNT; i++) { |
694 | void __iomem *p = ioremap(addresses[i], 0x2000); |
695 | if (!p) |
696 | continue; |
697 | #if DEBUG_DETECT |
698 | printk( " %lx(%lx),", addresses[i], bios_base ); |
699 | #endif |
700 | for (j = 0; j < SIGNATURE_COUNT; j++) { |
701 | if (check_signature(p + signatures[j].sig_offset, |
702 | signatures[j].signature, |
703 | signatures[j].sig_length )) { |
704 | bios_major = signatures[j].major_bios_version; |
705 | bios_minor = signatures[j].minor_bios_version; |
706 | PCI_bus = (signatures[j].flag == 1); |
707 | Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0; |
708 | bios_base = addresses[i]; |
709 | bios_mem = p; |
710 | goto found; |
711 | } |
712 | } |
713 | iounmap(p); |
714 | } |
715 | |
716 | found: |
717 | if (bios_major == 2) { |
718 | /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM. |
719 | Assuming the ROM is enabled (otherwise we wouldn't have been |
720 | able to read the ROM signature :-), then the ROM sets up the |
721 | RAM area with some magic numbers, such as a list of port |
722 | base addresses and a list of the disk "geometry" reported to |
723 | DOS (this geometry has nothing to do with physical geometry). |
724 | */ |
725 | |
726 | switch (Quantum) { |
727 | case 2: /* ISA_200S */ |
728 | case 3: /* ISA_250MG */ |
729 | base = readb(bios_mem + 0x1fa2) + (readb(bios_mem + 0x1fa3) << 8); |
730 | break; |
731 | case 4: /* ISA_200S (another one) */ |
732 | base = readb(bios_mem + 0x1fa3) + (readb(bios_mem + 0x1fa4) << 8); |
733 | break; |
734 | default: |
735 | base = readb(bios_mem + 0x1fcc) + (readb(bios_mem + 0x1fcd) << 8); |
736 | break; |
737 | } |
738 | |
739 | #if DEBUG_DETECT |
740 | printk( " %x,", base ); |
741 | #endif |
742 | |
743 | for (i = 0; i < PORT_COUNT; i++) { |
744 | if (base == ports[i]) { |
745 | if (!request_region(base, 0x10, "fdomain")) |
746 | break; |
747 | if (!fdomain_is_valid_port(base)) { |
748 | release_region(base, 0x10); |
749 | break; |
750 | } |
751 | *irq = fdomain_get_irq( base ); |
752 | *iobase = base; |
753 | return 1; |
754 | } |
755 | } |
756 | |
757 | /* This is a bad sign. It usually means that someone patched the |
758 | BIOS signature list (the signatures variable) to contain a BIOS |
759 | signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */ |
760 | |
761 | #if DEBUG_DETECT |
762 | printk( " RAM FAILED, " ); |
763 | #endif |
764 | } |
765 | |
766 | /* Anyway, the alternative to finding the address in the RAM is to just |
767 | search through every possible port address for one that is attached |
768 | to the Future Domain card. Don't panic, though, about reading all |
769 | these random port addresses -- there are rumors that the Future |
770 | Domain BIOS does something very similar. |
771 | |
772 | Do not, however, check ports which the kernel knows are being used by |
773 | another driver. */ |
774 | |
775 | for (i = 0; i < PORT_COUNT; i++) { |
776 | base = ports[i]; |
777 | if (!request_region(base, 0x10, "fdomain")) { |
778 | #if DEBUG_DETECT |
779 | printk( " (%x inuse),", base ); |
780 | #endif |
781 | continue; |
782 | } |
783 | #if DEBUG_DETECT |
784 | printk( " %x,", base ); |
785 | #endif |
786 | flag = fdomain_is_valid_port(base); |
787 | if (flag) |
788 | break; |
789 | release_region(base, 0x10); |
790 | } |
791 | |
792 | #if DEBUG_DETECT |
793 | if (flag) printk( " SUCCESS\n" ); |
794 | else printk( " FAILURE\n" ); |
795 | #endif |
796 | |
797 | if (!flag) return 0; /* iobase not found */ |
798 | |
799 | *irq = fdomain_get_irq( base ); |
800 | *iobase = base; |
801 | |
802 | return 1; /* success */ |
803 | } |
804 | |
805 | #else /* PCMCIA */ |
806 | |
807 | static int fdomain_isa_detect( int *irq, int *iobase ) |
808 | { |
809 | if (irq) |
810 | *irq = 0; |
811 | if (iobase) |
812 | *iobase = 0; |
813 | return 0; |
814 | } |
815 | |
816 | #endif /* !PCMCIA */ |
817 | |
818 | |
819 | /* PCI detection function: int fdomain_pci_bios_detect(int* irq, int* |
820 | iobase) This function gets the Interrupt Level and I/O base address from |
821 | the PCI configuration registers. */ |
822 | |
823 | #ifdef CONFIG_PCI |
824 | static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev ) |
825 | { |
826 | unsigned int pci_irq; /* PCI interrupt line */ |
827 | unsigned long pci_base; /* PCI I/O base address */ |
828 | struct pci_dev *pdev = NULL; |
829 | |
830 | #if DEBUG_DETECT |
831 | /* Tell how to print a list of the known PCI devices from bios32 and |
832 | list vendor and device IDs being used if in debug mode. */ |
833 | |
834 | printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" ); |
835 | printk( "scsi: <fdomain> TMC-3260 detect:" |
836 | " Using Vendor ID: 0x%x and Device ID: 0x%x\n", |
837 | PCI_VENDOR_ID_FD, |
838 | PCI_DEVICE_ID_FD_36C70 ); |
839 | #endif |
840 | |
841 | if ((pdev = pci_get_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL) |
842 | return 0; |
843 | if (pci_enable_device(pdev)) |
844 | goto fail; |
845 | |
846 | #if DEBUG_DETECT |
847 | printk( "scsi: <fdomain> TMC-3260 detect:" |
848 | " PCI bus %u, device %u, function %u\n", |
849 | pdev->bus->number, |
850 | PCI_SLOT(pdev->devfn), |
851 | PCI_FUNC(pdev->devfn)); |
852 | #endif |
853 | |
854 | /* We now have the appropriate device function for the FD board so we |
855 | just read the PCI config info from the registers. */ |
856 | |
857 | pci_base = pci_resource_start(pdev, 0); |
858 | pci_irq = pdev->irq; |
859 | |
860 | if (!request_region( pci_base, 0x10, "fdomain" )) |
861 | goto fail; |
862 | |
863 | /* Now we have the I/O base address and interrupt from the PCI |
864 | configuration registers. */ |
865 | |
866 | *irq = pci_irq; |
867 | *iobase = pci_base; |
868 | *ret_pdev = pdev; |
869 | |
870 | #if DEBUG_DETECT |
871 | printk( "scsi: <fdomain> TMC-3260 detect:" |
872 | " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base ); |
873 | #endif |
874 | |
875 | if (!fdomain_is_valid_port(pci_base)) { |
876 | printk(KERN_ERR "scsi: <fdomain> PCI card detected, but driver not loaded (invalid port)\n" ); |
877 | release_region(pci_base, 0x10); |
878 | goto fail; |
879 | } |
880 | |
881 | /* Fill in a few global variables. Ugh. */ |
882 | bios_major = bios_minor = -1; |
883 | PCI_bus = 1; |
884 | PCI_dev = pdev; |
885 | Quantum = 0; |
886 | bios_base = 0; |
887 | |
888 | return 1; |
889 | fail: |
890 | pci_dev_put(pdev); |
891 | return 0; |
892 | } |
893 | |
894 | #endif |
895 | |
896 | struct Scsi_Host *__fdomain_16x0_detect(struct scsi_host_template *tpnt ) |
897 | { |
898 | int retcode; |
899 | struct Scsi_Host *shpnt; |
900 | struct pci_dev *pdev = NULL; |
901 | |
902 | if (setup_called) { |
903 | #if DEBUG_DETECT |
904 | printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n", |
905 | port_base, interrupt_level ); |
906 | #endif |
907 | if (!request_region(port_base, 0x10, "fdomain")) { |
908 | printk( "scsi: <fdomain> port 0x%x is busy\n", port_base ); |
909 | printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); |
910 | return NULL; |
911 | } |
912 | if (!fdomain_is_valid_port( port_base )) { |
913 | printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n", |
914 | port_base ); |
915 | printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); |
916 | release_region(port_base, 0x10); |
917 | return NULL; |
918 | } |
919 | } else { |
920 | int flag = 0; |
921 | |
922 | #ifdef CONFIG_PCI |
923 | /* Try PCI detection first */ |
924 | flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev ); |
925 | #endif |
926 | if (!flag) { |
927 | /* Then try ISA bus detection */ |
928 | flag = fdomain_isa_detect( &interrupt_level, &port_base ); |
929 | |
930 | if (!flag) { |
931 | printk( "scsi: <fdomain> Detection failed (no card)\n" ); |
932 | return NULL; |
933 | } |
934 | } |
935 | } |
936 | |
937 | fdomain_16x0_bus_reset(NULL); |
938 | |
939 | if (fdomain_test_loopback()) { |
940 | printk(KERN_ERR "scsi: <fdomain> Detection failed (loopback test failed at port base 0x%x)\n", port_base); |
941 | if (setup_called) { |
942 | printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n"); |
943 | } |
944 | goto fail; |
945 | } |
946 | |
947 | if (this_id) { |
948 | tpnt->this_id = (this_id & 0x07); |
949 | adapter_mask = (1 << tpnt->this_id); |
950 | } else { |
951 | if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) { |
952 | tpnt->this_id = 7; |
953 | adapter_mask = 0x80; |
954 | } else { |
955 | tpnt->this_id = 6; |
956 | adapter_mask = 0x40; |
957 | } |
958 | } |
959 | |
960 | /* Print out a banner here in case we can't |
961 | get resources. */ |
962 | |
963 | shpnt = scsi_register( tpnt, 0 ); |
964 | if(shpnt == NULL) { |
965 | release_region(port_base, 0x10); |
966 | return NULL; |
967 | } |
968 | shpnt->irq = interrupt_level; |
969 | shpnt->io_port = port_base; |
970 | shpnt->n_io_port = 0x10; |
971 | print_banner( shpnt ); |
972 | |
973 | /* Log IRQ with kernel */ |
974 | if (!interrupt_level) { |
975 | printk(KERN_ERR "scsi: <fdomain> Card Detected, but driver not loaded (no IRQ)\n" ); |
976 | goto fail; |
977 | } else { |
978 | /* Register the IRQ with the kernel */ |
979 | |
980 | retcode = request_irq( interrupt_level, |
981 | do_fdomain_16x0_intr, pdev?IRQF_SHARED:0, "fdomain", shpnt); |
982 | |
983 | if (retcode < 0) { |
984 | if (retcode == -EINVAL) { |
985 | printk(KERN_ERR "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level ); |
986 | printk(KERN_ERR " This shouldn't happen!\n" ); |
987 | printk(KERN_ERR " Send mail to faith@acm.org\n" ); |
988 | } else if (retcode == -EBUSY) { |
989 | printk(KERN_ERR "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level ); |
990 | printk(KERN_ERR " Please use another IRQ!\n" ); |
991 | } else { |
992 | printk(KERN_ERR "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level ); |
993 | printk(KERN_ERR " This shouldn't happen!\n" ); |
994 | printk(KERN_ERR " Send mail to faith@acm.org\n" ); |
995 | } |
996 | printk(KERN_ERR "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" ); |
997 | goto fail; |
998 | } |
999 | } |
1000 | return shpnt; |
1001 | fail: |
1002 | pci_dev_put(pdev); |
1003 | release_region(port_base, 0x10); |
1004 | return NULL; |
1005 | } |
1006 | |
1007 | static int fdomain_16x0_detect(struct scsi_host_template *tpnt) |
1008 | { |
1009 | if (fdomain) |
1010 | fdomain_setup(fdomain); |
1011 | return (__fdomain_16x0_detect(tpnt) != NULL); |
1012 | } |
1013 | |
1014 | static const char *fdomain_16x0_info( struct Scsi_Host *ignore ) |
1015 | { |
1016 | static char buffer[128]; |
1017 | char *pt; |
1018 | |
1019 | strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" ); |
1020 | if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */ |
1021 | strcat( buffer, strchr( VERSION, ':' ) + 1 ); |
1022 | pt = strrchr( buffer, '$') - 1; |
1023 | if (!pt) /* Stripped RCS Revision string? */ |
1024 | pt = buffer + strlen( buffer ) - 1; |
1025 | if (*pt != ' ') |
1026 | ++pt; |
1027 | *pt = '\0'; |
1028 | } else { /* Assume VERSION is a number */ |
1029 | strcat( buffer, " " VERSION ); |
1030 | } |
1031 | |
1032 | return buffer; |
1033 | } |
1034 | |
1035 | #if 0 |
1036 | static int fdomain_arbitrate( void ) |
1037 | { |
1038 | int status = 0; |
1039 | unsigned long timeout; |
1040 | |
1041 | #if EVERY_ACCESS |
1042 | printk( "fdomain_arbitrate()\n" ); |
1043 | #endif |
1044 | |
1045 | outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */ |
1046 | outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */ |
1047 | outb(0x04 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */ |
1048 | |
1049 | timeout = 500; |
1050 | do { |
1051 | status = inb(port_base + TMC_Status); /* Read adapter status */ |
1052 | if (status & 0x02) /* Arbitration complete */ |
1053 | return 0; |
1054 | mdelay(1); /* Wait one millisecond */ |
1055 | } while (--timeout); |
1056 | |
1057 | /* Make bus idle */ |
1058 | fdomain_make_bus_idle(); |
1059 | |
1060 | #if EVERY_ACCESS |
1061 | printk( "Arbitration failed, status = %x\n", status ); |
1062 | #endif |
1063 | #if ERRORS_ONLY |
1064 | printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status ); |
1065 | #endif |
1066 | return 1; |
1067 | } |
1068 | #endif |
1069 | |
1070 | static int fdomain_select( int target ) |
1071 | { |
1072 | int status; |
1073 | unsigned long timeout; |
1074 | #if ERRORS_ONLY |
1075 | static int flag = 0; |
1076 | #endif |
1077 | |
1078 | outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */ |
1079 | outb(adapter_mask | (1 << target), port_base + SCSI_Data_NoACK); |
1080 | |
1081 | /* Stop arbitration and enable parity */ |
1082 | outb(PARITY_MASK, port_base + TMC_Cntl); |
1083 | |
1084 | timeout = 350; /* 350 msec */ |
1085 | |
1086 | do { |
1087 | status = inb(port_base + SCSI_Status); /* Read adapter status */ |
1088 | if (status & 1) { /* Busy asserted */ |
1089 | /* Enable SCSI Bus (on error, should make bus idle with 0) */ |
1090 | outb(0x80, port_base + SCSI_Cntl); |
1091 | return 0; |
1092 | } |
1093 | mdelay(1); /* wait one msec */ |
1094 | } while (--timeout); |
1095 | /* Make bus idle */ |
1096 | fdomain_make_bus_idle(); |
1097 | #if EVERY_ACCESS |
1098 | if (!target) printk( "Selection failed\n" ); |
1099 | #endif |
1100 | #if ERRORS_ONLY |
1101 | if (!target) { |
1102 | if (!flag) /* Skip first failure for all chips. */ |
1103 | ++flag; |
1104 | else |
1105 | printk( "scsi: <fdomain> Selection failed\n" ); |
1106 | } |
1107 | #endif |
1108 | return 1; |
1109 | } |
1110 | |
1111 | static void my_done(int error) |
1112 | { |
1113 | if (in_command) { |
1114 | in_command = 0; |
1115 | outb(0x00, port_base + Interrupt_Cntl); |
1116 | fdomain_make_bus_idle(); |
1117 | current_SC->result = error; |
1118 | if (current_SC->scsi_done) |
1119 | current_SC->scsi_done( current_SC ); |
1120 | else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" ); |
1121 | } else { |
1122 | panic( "scsi: <fdomain> my_done() called outside of command\n" ); |
1123 | } |
1124 | #if DEBUG_RACE |
1125 | in_interrupt_flag = 0; |
1126 | #endif |
1127 | } |
1128 | |
1129 | static irqreturn_t do_fdomain_16x0_intr(int irq, void *dev_id) |
1130 | { |
1131 | unsigned long flags; |
1132 | int status; |
1133 | int done = 0; |
1134 | unsigned data_count; |
1135 | |
1136 | /* The fdomain_16x0_intr is only called via |
1137 | the interrupt handler. The goal of the |
1138 | sti() here is to allow other |
1139 | interruptions while this routine is |
1140 | running. */ |
1141 | |
1142 | /* Check for other IRQ sources */ |
1143 | if ((inb(port_base + TMC_Status) & 0x01) == 0) |
1144 | return IRQ_NONE; |
1145 | |
1146 | /* It is our IRQ */ |
1147 | outb(0x00, port_base + Interrupt_Cntl); |
1148 | |
1149 | /* We usually have one spurious interrupt after each command. Ignore it. */ |
1150 | if (!in_command || !current_SC) { /* Spurious interrupt */ |
1151 | #if EVERY_ACCESS |
1152 | printk( "Spurious interrupt, in_command = %d, current_SC = %x\n", |
1153 | in_command, current_SC ); |
1154 | #endif |
1155 | return IRQ_NONE; |
1156 | } |
1157 | |
1158 | /* Abort calls my_done, so we do nothing here. */ |
1159 | if (current_SC->SCp.phase & aborted) { |
1160 | #if DEBUG_ABORT |
1161 | printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" ); |
1162 | #endif |
1163 | /* |
1164 | return IRQ_HANDLED; */ |
1165 | } |
1166 | |
1167 | #if DEBUG_RACE |
1168 | ++in_interrupt_flag; |
1169 | #endif |
1170 | |
1171 | if (current_SC->SCp.phase & in_arbitration) { |
1172 | status = inb(port_base + TMC_Status); /* Read adapter status */ |
1173 | if (!(status & 0x02)) { |
1174 | #if EVERY_ACCESS |
1175 | printk( " AFAIL " ); |
1176 | #endif |
1177 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
1178 | my_done( DID_BUS_BUSY << 16 ); |
1179 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
1180 | return IRQ_HANDLED; |
1181 | } |
1182 | current_SC->SCp.phase = in_selection; |
1183 | |
1184 | outb(0x40 | FIFO_COUNT, port_base + Interrupt_Cntl); |
1185 | |
1186 | outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */ |
1187 | outb(adapter_mask | (1 << scmd_id(current_SC)), port_base + SCSI_Data_NoACK); |
1188 | |
1189 | /* Stop arbitration and enable parity */ |
1190 | outb(0x10 | PARITY_MASK, port_base + TMC_Cntl); |
1191 | #if DEBUG_RACE |
1192 | in_interrupt_flag = 0; |
1193 | #endif |
1194 | return IRQ_HANDLED; |
1195 | } else if (current_SC->SCp.phase & in_selection) { |
1196 | status = inb(port_base + SCSI_Status); |
1197 | if (!(status & 0x01)) { |
1198 | /* Try again, for slow devices */ |
1199 | if (fdomain_select( scmd_id(current_SC) )) { |
1200 | #if EVERY_ACCESS |
1201 | printk( " SFAIL " ); |
1202 | #endif |
1203 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
1204 | my_done( DID_NO_CONNECT << 16 ); |
1205 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
1206 | return IRQ_HANDLED; |
1207 | } else { |
1208 | #if EVERY_ACCESS |
1209 | printk( " AltSel " ); |
1210 | #endif |
1211 | /* Stop arbitration and enable parity */ |
1212 | outb(0x10 | PARITY_MASK, port_base + TMC_Cntl); |
1213 | } |
1214 | } |
1215 | current_SC->SCp.phase = in_other; |
1216 | outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl); |
1217 | outb(0x80, port_base + SCSI_Cntl); |
1218 | #if DEBUG_RACE |
1219 | in_interrupt_flag = 0; |
1220 | #endif |
1221 | return IRQ_HANDLED; |
1222 | } |
1223 | |
1224 | /* current_SC->SCp.phase == in_other: this is the body of the routine */ |
1225 | |
1226 | status = inb(port_base + SCSI_Status); |
1227 | |
1228 | if (status & 0x10) { /* REQ */ |
1229 | |
1230 | switch (status & 0x0e) { |
1231 | |
1232 | case 0x08: /* COMMAND OUT */ |
1233 | outb(current_SC->cmnd[current_SC->SCp.sent_command++], |
1234 | port_base + Write_SCSI_Data); |
1235 | #if EVERY_ACCESS |
1236 | printk( "CMD = %x,", |
1237 | current_SC->cmnd[ current_SC->SCp.sent_command - 1] ); |
1238 | #endif |
1239 | break; |
1240 | case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */ |
1241 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { |
1242 | current_SC->SCp.have_data_in = -1; |
1243 | outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl); |
1244 | } |
1245 | break; |
1246 | case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */ |
1247 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { |
1248 | current_SC->SCp.have_data_in = 1; |
1249 | outb(0x90 | PARITY_MASK, port_base + TMC_Cntl); |
1250 | } |
1251 | break; |
1252 | case 0x0c: /* STATUS IN */ |
1253 | current_SC->SCp.Status = inb(port_base + Read_SCSI_Data); |
1254 | #if EVERY_ACCESS |
1255 | printk( "Status = %x, ", current_SC->SCp.Status ); |
1256 | #endif |
1257 | #if ERRORS_ONLY |
1258 | if (current_SC->SCp.Status |
1259 | && current_SC->SCp.Status != 2 |
1260 | && current_SC->SCp.Status != 8) { |
1261 | printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n", |
1262 | current_SC->device->id, |
1263 | current_SC->cmnd[0], |
1264 | current_SC->SCp.Status ); |
1265 | } |
1266 | #endif |
1267 | break; |
1268 | case 0x0a: /* MESSAGE OUT */ |
1269 | outb(MESSAGE_REJECT, port_base + Write_SCSI_Data); /* Reject */ |
1270 | break; |
1271 | case 0x0e: /* MESSAGE IN */ |
1272 | current_SC->SCp.Message = inb(port_base + Read_SCSI_Data); |
1273 | #if EVERY_ACCESS |
1274 | printk( "Message = %x, ", current_SC->SCp.Message ); |
1275 | #endif |
1276 | if (!current_SC->SCp.Message) ++done; |
1277 | #if DEBUG_MESSAGES || EVERY_ACCESS |
1278 | if (current_SC->SCp.Message) { |
1279 | printk( "scsi: <fdomain> message = %x\n", |
1280 | current_SC->SCp.Message ); |
1281 | } |
1282 | #endif |
1283 | break; |
1284 | } |
1285 | } |
1286 | |
1287 | if (chip == tmc1800 && !current_SC->SCp.have_data_in |
1288 | && (current_SC->SCp.sent_command >= current_SC->cmd_len)) { |
1289 | |
1290 | if(current_SC->sc_data_direction == DMA_TO_DEVICE) |
1291 | { |
1292 | current_SC->SCp.have_data_in = -1; |
1293 | outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl); |
1294 | } |
1295 | else |
1296 | { |
1297 | current_SC->SCp.have_data_in = 1; |
1298 | outb(0x90 | PARITY_MASK, port_base + TMC_Cntl); |
1299 | } |
1300 | } |
1301 | |
1302 | if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */ |
1303 | while ((data_count = FIFO_Size - inw(port_base + FIFO_Data_Count)) > 512) { |
1304 | #if EVERY_ACCESS |
1305 | printk( "DC=%d, ", data_count ) ; |
1306 | #endif |
1307 | if (data_count > current_SC->SCp.this_residual) |
1308 | data_count = current_SC->SCp.this_residual; |
1309 | if (data_count > 0) { |
1310 | #if EVERY_ACCESS |
1311 | printk( "%d OUT, ", data_count ); |
1312 | #endif |
1313 | if (data_count == 1) { |
1314 | outb(*current_SC->SCp.ptr++, port_base + Write_FIFO); |
1315 | --current_SC->SCp.this_residual; |
1316 | } else { |
1317 | data_count >>= 1; |
1318 | outsw(port_base + Write_FIFO, current_SC->SCp.ptr, data_count); |
1319 | current_SC->SCp.ptr += 2 * data_count; |
1320 | current_SC->SCp.this_residual -= 2 * data_count; |
1321 | } |
1322 | } |
1323 | if (!current_SC->SCp.this_residual) { |
1324 | if (current_SC->SCp.buffers_residual) { |
1325 | --current_SC->SCp.buffers_residual; |
1326 | ++current_SC->SCp.buffer; |
1327 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); |
1328 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
1329 | } else |
1330 | break; |
1331 | } |
1332 | } |
1333 | } |
1334 | |
1335 | if (current_SC->SCp.have_data_in == 1) { /* DATA IN */ |
1336 | while ((data_count = inw(port_base + FIFO_Data_Count)) > 0) { |
1337 | #if EVERY_ACCESS |
1338 | printk( "DC=%d, ", data_count ); |
1339 | #endif |
1340 | if (data_count > current_SC->SCp.this_residual) |
1341 | data_count = current_SC->SCp.this_residual; |
1342 | if (data_count) { |
1343 | #if EVERY_ACCESS |
1344 | printk( "%d IN, ", data_count ); |
1345 | #endif |
1346 | if (data_count == 1) { |
1347 | *current_SC->SCp.ptr++ = inb(port_base + Read_FIFO); |
1348 | --current_SC->SCp.this_residual; |
1349 | } else { |
1350 | data_count >>= 1; /* Number of words */ |
1351 | insw(port_base + Read_FIFO, current_SC->SCp.ptr, data_count); |
1352 | current_SC->SCp.ptr += 2 * data_count; |
1353 | current_SC->SCp.this_residual -= 2 * data_count; |
1354 | } |
1355 | } |
1356 | if (!current_SC->SCp.this_residual |
1357 | && current_SC->SCp.buffers_residual) { |
1358 | --current_SC->SCp.buffers_residual; |
1359 | ++current_SC->SCp.buffer; |
1360 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); |
1361 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
1362 | } |
1363 | } |
1364 | } |
1365 | |
1366 | if (done) { |
1367 | #if EVERY_ACCESS |
1368 | printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in ); |
1369 | #endif |
1370 | |
1371 | #if ERRORS_ONLY |
1372 | if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) { |
1373 | char *buf = scsi_sglist(current_SC); |
1374 | if ((unsigned char)(*(buf + 2)) & 0x0f) { |
1375 | unsigned char key; |
1376 | unsigned char code; |
1377 | unsigned char qualifier; |
1378 | |
1379 | key = (unsigned char)(*(buf + 2)) & 0x0f; |
1380 | code = (unsigned char)(*(buf + 12)); |
1381 | qualifier = (unsigned char)(*(buf + 13)); |
1382 | |
1383 | if (key != UNIT_ATTENTION |
1384 | && !(key == NOT_READY |
1385 | && code == 0x04 |
1386 | && (!qualifier || qualifier == 0x02 || qualifier == 0x01)) |
1387 | && !(key == ILLEGAL_REQUEST && (code == 0x25 |
1388 | || code == 0x24 |
1389 | || !code))) |
1390 | |
1391 | printk( "scsi: <fdomain> REQUEST SENSE" |
1392 | " Key = %x, Code = %x, Qualifier = %x\n", |
1393 | key, code, qualifier ); |
1394 | } |
1395 | } |
1396 | #endif |
1397 | #if EVERY_ACCESS |
1398 | printk( "BEFORE MY_DONE. . ." ); |
1399 | #endif |
1400 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
1401 | my_done( (current_SC->SCp.Status & 0xff) |
1402 | | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) ); |
1403 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
1404 | #if EVERY_ACCESS |
1405 | printk( "RETURNING.\n" ); |
1406 | #endif |
1407 | |
1408 | } else { |
1409 | if (current_SC->SCp.phase & disconnect) { |
1410 | outb(0xd0 | FIFO_COUNT, port_base + Interrupt_Cntl); |
1411 | outb(0x00, port_base + SCSI_Cntl); |
1412 | } else { |
1413 | outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl); |
1414 | } |
1415 | } |
1416 | #if DEBUG_RACE |
1417 | in_interrupt_flag = 0; |
1418 | #endif |
1419 | return IRQ_HANDLED; |
1420 | } |
1421 | |
1422 | static int fdomain_16x0_queue(struct scsi_cmnd *SCpnt, |
1423 | void (*done)(struct scsi_cmnd *)) |
1424 | { |
1425 | if (in_command) { |
1426 | panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" ); |
1427 | } |
1428 | #if EVERY_ACCESS |
1429 | printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n", |
1430 | SCpnt->target, |
1431 | *(unsigned char *)SCpnt->cmnd, |
1432 | scsi_sg_count(SCpnt), |
1433 | scsi_bufflen(SCpnt)); |
1434 | #endif |
1435 | |
1436 | fdomain_make_bus_idle(); |
1437 | |
1438 | current_SC = SCpnt; /* Save this for the done function */ |
1439 | current_SC->scsi_done = done; |
1440 | |
1441 | /* Initialize static data */ |
1442 | |
1443 | if (scsi_sg_count(current_SC)) { |
1444 | current_SC->SCp.buffer = scsi_sglist(current_SC); |
1445 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); |
1446 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
1447 | current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1; |
1448 | } else { |
1449 | current_SC->SCp.ptr = NULL; |
1450 | current_SC->SCp.this_residual = 0; |
1451 | current_SC->SCp.buffer = NULL; |
1452 | current_SC->SCp.buffers_residual = 0; |
1453 | } |
1454 | |
1455 | current_SC->SCp.Status = 0; |
1456 | current_SC->SCp.Message = 0; |
1457 | current_SC->SCp.have_data_in = 0; |
1458 | current_SC->SCp.sent_command = 0; |
1459 | current_SC->SCp.phase = in_arbitration; |
1460 | |
1461 | /* Start arbitration */ |
1462 | outb(0x00, port_base + Interrupt_Cntl); |
1463 | outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */ |
1464 | outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */ |
1465 | ++in_command; |
1466 | outb(0x20, port_base + Interrupt_Cntl); |
1467 | outb(0x14 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */ |
1468 | |
1469 | return 0; |
1470 | } |
1471 | |
1472 | #if DEBUG_ABORT |
1473 | static void print_info(struct scsi_cmnd *SCpnt) |
1474 | { |
1475 | unsigned int imr; |
1476 | unsigned int irr; |
1477 | unsigned int isr; |
1478 | |
1479 | if (!SCpnt || !SCpnt->device || !SCpnt->device->host) { |
1480 | printk(KERN_WARNING "scsi: <fdomain> Cannot provide detailed information\n"); |
1481 | return; |
1482 | } |
1483 | |
1484 | printk(KERN_INFO "%s\n", fdomain_16x0_info( SCpnt->device->host ) ); |
1485 | print_banner(SCpnt->device->host); |
1486 | switch (SCpnt->SCp.phase) { |
1487 | case in_arbitration: printk("arbitration"); break; |
1488 | case in_selection: printk("selection"); break; |
1489 | case in_other: printk("other"); break; |
1490 | default: printk("unknown"); break; |
1491 | } |
1492 | |
1493 | printk( " (%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n", |
1494 | SCpnt->SCp.phase, |
1495 | SCpnt->device->id, |
1496 | *(unsigned char *)SCpnt->cmnd, |
1497 | scsi_sg_count(SCpnt), |
1498 | scsi_bufflen(SCpnt)); |
1499 | printk( "sent_command = %d, have_data_in = %d, timeout = %d\n", |
1500 | SCpnt->SCp.sent_command, |
1501 | SCpnt->SCp.have_data_in, |
1502 | SCpnt->timeout ); |
1503 | #if DEBUG_RACE |
1504 | printk( "in_interrupt_flag = %d\n", in_interrupt_flag ); |
1505 | #endif |
1506 | |
1507 | imr = (inb( 0x0a1 ) << 8) + inb( 0x21 ); |
1508 | outb( 0x0a, 0xa0 ); |
1509 | irr = inb( 0xa0 ) << 8; |
1510 | outb( 0x0a, 0x20 ); |
1511 | irr += inb( 0x20 ); |
1512 | outb( 0x0b, 0xa0 ); |
1513 | isr = inb( 0xa0 ) << 8; |
1514 | outb( 0x0b, 0x20 ); |
1515 | isr += inb( 0x20 ); |
1516 | |
1517 | /* Print out interesting information */ |
1518 | printk( "IMR = 0x%04x", imr ); |
1519 | if (imr & (1 << interrupt_level)) |
1520 | printk( " (masked)" ); |
1521 | printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr ); |
1522 | |
1523 | printk( "SCSI Status = 0x%02x\n", inb(port_base + SCSI_Status)); |
1524 | printk( "TMC Status = 0x%02x", inb(port_base + TMC_Status)); |
1525 | if (inb((port_base + TMC_Status) & 1)) |
1526 | printk( " (interrupt)" ); |
1527 | printk( "\n" ); |
1528 | printk("Interrupt Status = 0x%02x", inb(port_base + Interrupt_Status)); |
1529 | if (inb(port_base + Interrupt_Status) & 0x08) |
1530 | printk( " (enabled)" ); |
1531 | printk( "\n" ); |
1532 | if (chip == tmc18c50 || chip == tmc18c30) { |
1533 | printk("FIFO Status = 0x%02x\n", inb(port_base + FIFO_Status)); |
1534 | printk( "Int. Condition = 0x%02x\n", |
1535 | inb( port_base + Interrupt_Cond ) ); |
1536 | } |
1537 | printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) ); |
1538 | if (chip == tmc18c50 || chip == tmc18c30) |
1539 | printk( "Configuration 2 = 0x%02x\n", |
1540 | inb( port_base + Configuration2 ) ); |
1541 | } |
1542 | #endif |
1543 | |
1544 | static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt) |
1545 | { |
1546 | #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT |
1547 | printk( "scsi: <fdomain> abort " ); |
1548 | #endif |
1549 | |
1550 | if (!in_command) { |
1551 | #if EVERY_ACCESS || ERRORS_ONLY |
1552 | printk( " (not in command)\n" ); |
1553 | #endif |
1554 | return FAILED; |
1555 | } else printk( "\n" ); |
1556 | |
1557 | #if DEBUG_ABORT |
1558 | print_info( SCpnt ); |
1559 | #endif |
1560 | |
1561 | fdomain_make_bus_idle(); |
1562 | current_SC->SCp.phase |= aborted; |
1563 | current_SC->result = DID_ABORT << 16; |
1564 | |
1565 | /* Aborts are not done well. . . */ |
1566 | my_done(DID_ABORT << 16); |
1567 | return SUCCESS; |
1568 | } |
1569 | |
1570 | int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt) |
1571 | { |
1572 | unsigned long flags; |
1573 | |
1574 | local_irq_save(flags); |
1575 | |
1576 | outb(1, port_base + SCSI_Cntl); |
1577 | do_pause( 2 ); |
1578 | outb(0, port_base + SCSI_Cntl); |
1579 | do_pause( 115 ); |
1580 | outb(0, port_base + SCSI_Mode_Cntl); |
1581 | outb(PARITY_MASK, port_base + TMC_Cntl); |
1582 | |
1583 | local_irq_restore(flags); |
1584 | return SUCCESS; |
1585 | } |
1586 | |
1587 | static int fdomain_16x0_biosparam(struct scsi_device *sdev, |
1588 | struct block_device *bdev, |
1589 | sector_t capacity, int *info_array) |
1590 | { |
1591 | int drive; |
1592 | int size = capacity; |
1593 | unsigned long offset; |
1594 | struct drive_info { |
1595 | unsigned short cylinders; |
1596 | unsigned char heads; |
1597 | unsigned char sectors; |
1598 | } i; |
1599 | |
1600 | /* NOTES: |
1601 | The RAM area starts at 0x1f00 from the bios_base address. |
1602 | |
1603 | For BIOS Version 2.0: |
1604 | |
1605 | The drive parameter table seems to start at 0x1f30. |
1606 | The first byte's purpose is not known. |
1607 | Next is the cylinder, head, and sector information. |
1608 | The last 4 bytes appear to be the drive's size in sectors. |
1609 | The other bytes in the drive parameter table are unknown. |
1610 | If anyone figures them out, please send me mail, and I will |
1611 | update these notes. |
1612 | |
1613 | Tape drives do not get placed in this table. |
1614 | |
1615 | There is another table at 0x1fea: |
1616 | If the byte is 0x01, then the SCSI ID is not in use. |
1617 | If the byte is 0x18 or 0x48, then the SCSI ID is in use, |
1618 | although tapes don't seem to be in this table. I haven't |
1619 | seen any other numbers (in a limited sample). |
1620 | |
1621 | 0x1f2d is a drive count (i.e., not including tapes) |
1622 | |
1623 | The table at 0x1fcc are I/O ports addresses for the various |
1624 | operations. I calculate these by hand in this driver code. |
1625 | |
1626 | |
1627 | |
1628 | For the ISA-200S version of BIOS Version 2.0: |
1629 | |
1630 | The drive parameter table starts at 0x1f33. |
1631 | |
1632 | WARNING: Assume that the table entry is 25 bytes long. Someone needs |
1633 | to check this for the Quantum ISA-200S card. |
1634 | |
1635 | |
1636 | |
1637 | For BIOS Version 3.2: |
1638 | |
1639 | The drive parameter table starts at 0x1f70. Each entry is |
1640 | 0x0a bytes long. Heads are one less than we need to report. |
1641 | */ |
1642 | |
1643 | if (MAJOR(bdev->bd_dev) != SCSI_DISK0_MAJOR) { |
1644 | printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks"); |
1645 | return 0; |
1646 | } |
1647 | drive = MINOR(bdev->bd_dev) >> 4; |
1648 | |
1649 | if (bios_major == 2) { |
1650 | switch (Quantum) { |
1651 | case 2: /* ISA_200S */ |
1652 | /* The value of 25 has never been verified. |
1653 | It should probably be 15. */ |
1654 | offset = 0x1f33 + drive * 25; |
1655 | break; |
1656 | case 3: /* ISA_250MG */ |
1657 | offset = 0x1f36 + drive * 15; |
1658 | break; |
1659 | case 4: /* ISA_200S (another one) */ |
1660 | offset = 0x1f34 + drive * 15; |
1661 | break; |
1662 | default: |
1663 | offset = 0x1f31 + drive * 25; |
1664 | break; |
1665 | } |
1666 | memcpy_fromio( &i, bios_mem + offset, sizeof( struct drive_info ) ); |
1667 | info_array[0] = i.heads; |
1668 | info_array[1] = i.sectors; |
1669 | info_array[2] = i.cylinders; |
1670 | } else if (bios_major == 3 |
1671 | && bios_minor >= 0 |
1672 | && bios_minor < 4) { /* 3.0 and 3.2 BIOS */ |
1673 | memcpy_fromio( &i, bios_mem + 0x1f71 + drive * 10, |
1674 | sizeof( struct drive_info ) ); |
1675 | info_array[0] = i.heads + 1; |
1676 | info_array[1] = i.sectors; |
1677 | info_array[2] = i.cylinders; |
1678 | } else { /* 3.4 BIOS (and up?) */ |
1679 | /* This algorithm was provided by Future Domain (much thanks!). */ |
1680 | unsigned char *p = scsi_bios_ptable(bdev); |
1681 | |
1682 | if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */ |
1683 | && p[4]) { /* Partition type */ |
1684 | |
1685 | /* The partition table layout is as follows: |
1686 | |
1687 | Start: 0x1b3h |
1688 | Offset: 0 = partition status |
1689 | 1 = starting head |
1690 | 2 = starting sector and cylinder (word, encoded) |
1691 | 4 = partition type |
1692 | 5 = ending head |
1693 | 6 = ending sector and cylinder (word, encoded) |
1694 | 8 = starting absolute sector (double word) |
1695 | c = number of sectors (double word) |
1696 | Signature: 0x1fe = 0x55aa |
1697 | |
1698 | So, this algorithm assumes: |
1699 | 1) the first partition table is in use, |
1700 | 2) the data in the first entry is correct, and |
1701 | 3) partitions never divide cylinders |
1702 | |
1703 | Note that (1) may be FALSE for NetBSD (and other BSD flavors), |
1704 | as well as for Linux. Note also, that Linux doesn't pay any |
1705 | attention to the fields that are used by this algorithm -- it |
1706 | only uses the absolute sector data. Recent versions of Linux's |
1707 | fdisk(1) will fill this data in correctly, and forthcoming |
1708 | versions will check for consistency. |
1709 | |
1710 | Checking for a non-zero partition type is not part of the |
1711 | Future Domain algorithm, but it seemed to be a reasonable thing |
1712 | to do, especially in the Linux and BSD worlds. */ |
1713 | |
1714 | info_array[0] = p[5] + 1; /* heads */ |
1715 | info_array[1] = p[6] & 0x3f; /* sectors */ |
1716 | } else { |
1717 | |
1718 | /* Note that this new method guarantees that there will always be |
1719 | less than 1024 cylinders on a platter. This is good for drives |
1720 | up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */ |
1721 | |
1722 | if ((unsigned int)size >= 0x7e0000U) { |
1723 | info_array[0] = 0xff; /* heads = 255 */ |
1724 | info_array[1] = 0x3f; /* sectors = 63 */ |
1725 | } else if ((unsigned int)size >= 0x200000U) { |
1726 | info_array[0] = 0x80; /* heads = 128 */ |
1727 | info_array[1] = 0x3f; /* sectors = 63 */ |
1728 | } else { |
1729 | info_array[0] = 0x40; /* heads = 64 */ |
1730 | info_array[1] = 0x20; /* sectors = 32 */ |
1731 | } |
1732 | } |
1733 | /* For both methods, compute the cylinders */ |
1734 | info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] ); |
1735 | kfree(p); |
1736 | } |
1737 | |
1738 | return 0; |
1739 | } |
1740 | |
1741 | static int fdomain_16x0_release(struct Scsi_Host *shpnt) |
1742 | { |
1743 | if (shpnt->irq) |
1744 | free_irq(shpnt->irq, shpnt); |
1745 | if (shpnt->io_port && shpnt->n_io_port) |
1746 | release_region(shpnt->io_port, shpnt->n_io_port); |
1747 | if (PCI_bus) |
1748 | pci_dev_put(PCI_dev); |
1749 | return 0; |
1750 | } |
1751 | |
1752 | struct scsi_host_template fdomain_driver_template = { |
1753 | .module = THIS_MODULE, |
1754 | .name = "fdomain", |
1755 | .proc_name = "fdomain", |
1756 | .detect = fdomain_16x0_detect, |
1757 | .info = fdomain_16x0_info, |
1758 | .queuecommand = fdomain_16x0_queue, |
1759 | .eh_abort_handler = fdomain_16x0_abort, |
1760 | .eh_bus_reset_handler = fdomain_16x0_bus_reset, |
1761 | .bios_param = fdomain_16x0_biosparam, |
1762 | .release = fdomain_16x0_release, |
1763 | .can_queue = 1, |
1764 | .this_id = 6, |
1765 | .sg_tablesize = 64, |
1766 | .cmd_per_lun = 1, |
1767 | .use_clustering = DISABLE_CLUSTERING, |
1768 | }; |
1769 | |
1770 | #ifndef PCMCIA |
1771 | #ifdef CONFIG_PCI |
1772 | |
1773 | static struct pci_device_id fdomain_pci_tbl[] __devinitdata = { |
1774 | { PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, |
1775 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
1776 | { } |
1777 | }; |
1778 | MODULE_DEVICE_TABLE(pci, fdomain_pci_tbl); |
1779 | #endif |
1780 | #define driver_template fdomain_driver_template |
1781 | #include "scsi_module.c" |
1782 | |
1783 | #endif |
1784 |
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