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 | publicly distributable driver. Future Domain technical support has |
178 | provided some information on the phone and have sent a few useful FAXs. |
179 | They have been much more helpful since they started to recognize that the |
180 | word "Linux" refers to an operating system :-). |
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 | |
286 | #include <scsi/scsi.h> |
287 | #include <scsi/scsi_cmnd.h> |
288 | #include <scsi/scsi_device.h> |
289 | #include <scsi/scsi_host.h> |
290 | #include <scsi/scsi_ioctl.h> |
291 | #include "fdomain.h" |
292 | |
293 | #ifndef PCMCIA |
294 | MODULE_AUTHOR("Rickard E. Faith"); |
295 | MODULE_DESCRIPTION("Future domain SCSI driver"); |
296 | MODULE_LICENSE("GPL"); |
297 | #endif |
298 | |
299 | |
300 | #define VERSION "$Revision: 5.51 $" |
301 | |
302 | /* START OF USER DEFINABLE OPTIONS */ |
303 | |
304 | #define DEBUG 0 /* Enable debugging output */ |
305 | #define ENABLE_PARITY 1 /* Enable SCSI Parity */ |
306 | #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */ |
307 | |
308 | /* END OF USER DEFINABLE OPTIONS */ |
309 | |
310 | #if DEBUG |
311 | #define EVERY_ACCESS 0 /* Write a line on every scsi access */ |
312 | #define ERRORS_ONLY 1 /* Only write a line if there is an error */ |
313 | #define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */ |
314 | #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */ |
315 | #define DEBUG_ABORT 1 /* Debug abort() routine */ |
316 | #define DEBUG_RESET 1 /* Debug reset() routine */ |
317 | #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */ |
318 | #else |
319 | #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */ |
320 | #define ERRORS_ONLY 0 |
321 | #define DEBUG_DETECT 0 |
322 | #define DEBUG_MESSAGES 0 |
323 | #define DEBUG_ABORT 0 |
324 | #define DEBUG_RESET 0 |
325 | #define DEBUG_RACE 0 |
326 | #endif |
327 | |
328 | /* Errors are reported on the line, so we don't need to report them again */ |
329 | #if EVERY_ACCESS |
330 | #undef ERRORS_ONLY |
331 | #define ERRORS_ONLY 0 |
332 | #endif |
333 | |
334 | #if ENABLE_PARITY |
335 | #define PARITY_MASK 0x08 |
336 | #else |
337 | #define PARITY_MASK 0x00 |
338 | #endif |
339 | |
340 | enum chip_type { |
341 | unknown = 0x00, |
342 | tmc1800 = 0x01, |
343 | tmc18c50 = 0x02, |
344 | tmc18c30 = 0x03, |
345 | }; |
346 | |
347 | enum { |
348 | in_arbitration = 0x02, |
349 | in_selection = 0x04, |
350 | in_other = 0x08, |
351 | disconnect = 0x10, |
352 | aborted = 0x20, |
353 | sent_ident = 0x40, |
354 | }; |
355 | |
356 | enum in_port_type { |
357 | Read_SCSI_Data = 0, |
358 | SCSI_Status = 1, |
359 | TMC_Status = 2, |
360 | FIFO_Status = 3, /* tmc18c50/tmc18c30 only */ |
361 | Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */ |
362 | LSB_ID_Code = 5, |
363 | MSB_ID_Code = 6, |
364 | Read_Loopback = 7, |
365 | SCSI_Data_NoACK = 8, |
366 | Interrupt_Status = 9, |
367 | Configuration1 = 10, |
368 | Configuration2 = 11, /* tmc18c50/tmc18c30 only */ |
369 | Read_FIFO = 12, |
370 | FIFO_Data_Count = 14 |
371 | }; |
372 | |
373 | enum out_port_type { |
374 | Write_SCSI_Data = 0, |
375 | SCSI_Cntl = 1, |
376 | Interrupt_Cntl = 2, |
377 | SCSI_Mode_Cntl = 3, |
378 | TMC_Cntl = 4, |
379 | Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */ |
380 | Write_Loopback = 7, |
381 | IO_Control = 11, /* tmc18c30 only */ |
382 | Write_FIFO = 12 |
383 | }; |
384 | |
385 | /* .bss will zero all the static variables below */ |
386 | static int port_base; |
387 | static unsigned long bios_base; |
388 | static void __iomem * bios_mem; |
389 | static int bios_major; |
390 | static int bios_minor; |
391 | static int PCI_bus; |
392 | #ifdef CONFIG_PCI |
393 | static struct pci_dev *PCI_dev; |
394 | #endif |
395 | static int Quantum; /* Quantum board variant */ |
396 | static int interrupt_level; |
397 | static volatile int in_command; |
398 | static struct scsi_cmnd *current_SC; |
399 | static enum chip_type chip = unknown; |
400 | static int adapter_mask; |
401 | static int this_id; |
402 | static int setup_called; |
403 | |
404 | #if DEBUG_RACE |
405 | static volatile int in_interrupt_flag; |
406 | #endif |
407 | |
408 | static int FIFO_Size = 0x2000; /* 8k FIFO for |
409 | pre-tmc18c30 chips */ |
410 | |
411 | static irqreturn_t do_fdomain_16x0_intr( int irq, void *dev_id ); |
412 | /* Allow insmod parameters to be like LILO parameters. For example: |
413 | insmod fdomain fdomain=0x140,11 */ |
414 | static char * fdomain = NULL; |
415 | module_param(fdomain, charp, 0); |
416 | |
417 | #ifndef PCMCIA |
418 | |
419 | static unsigned long addresses[] = { |
420 | 0xc8000, |
421 | 0xca000, |
422 | 0xce000, |
423 | 0xde000, |
424 | 0xcc000, /* Extra addresses for PCI boards */ |
425 | 0xd0000, |
426 | 0xe0000, |
427 | }; |
428 | #define ADDRESS_COUNT ARRAY_SIZE(addresses) |
429 | |
430 | static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; |
431 | #define PORT_COUNT ARRAY_SIZE(ports) |
432 | |
433 | static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; |
434 | |
435 | #endif /* !PCMCIA */ |
436 | |
437 | /* |
438 | |
439 | READ THIS BEFORE YOU ADD A SIGNATURE! |
440 | |
441 | READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME! |
442 | |
443 | READ EVERY WORD, ESPECIALLY THE WORD *NOT* |
444 | |
445 | This driver works *ONLY* for Future Domain cards using the TMC-1800, |
446 | TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670, |
447 | and 1680. These are all 16-bit cards. |
448 | |
449 | The following BIOS signature signatures are for boards which do *NOT* |
450 | work with this driver (these TMC-8xx and TMC-9xx boards may work with the |
451 | Seagate driver): |
452 | |
453 | FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88 |
454 | FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89 |
455 | FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89 |
456 | FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90 |
457 | FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90 |
458 | FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90 |
459 | FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92 |
460 | |
461 | (The cards which do *NOT* work are all 8-bit cards -- although some of |
462 | them have a 16-bit form-factor, the upper 8-bits are used only for IRQs |
463 | and are *NOT* used for data. You can tell the difference by following |
464 | the tracings on the circuit board -- if only the IRQ lines are involved, |
465 | you have a "8-bit" card, and should *NOT* use this driver.) |
466 | |
467 | */ |
468 | |
469 | #ifndef PCMCIA |
470 | |
471 | static struct signature { |
472 | const char *signature; |
473 | int sig_offset; |
474 | int sig_length; |
475 | int major_bios_version; |
476 | int minor_bios_version; |
477 | int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */ |
478 | } signatures[] = { |
479 | /* 1 2 3 4 5 6 */ |
480 | /* 123456789012345678901234567890123456789012345678901234567890 */ |
481 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 }, |
482 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 }, |
483 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 }, |
484 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 }, |
485 | { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 }, |
486 | { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 }, |
487 | { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 }, |
488 | { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 }, |
489 | { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 }, |
490 | { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 }, |
491 | { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 }, |
492 | { "IBM F1 P264/32", 5, 14, 3, -1, 1 }, |
493 | /* This next signature may not be a 3.5 bios */ |
494 | { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 }, |
495 | { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 }, |
496 | { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 }, |
497 | { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 }, |
498 | { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 }, |
499 | { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 }, |
500 | |
501 | /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE |
502 | Also, fix the disk geometry code for your signature and send your |
503 | changes for faith@cs.unc.edu. Above all, do *NOT* change any old |
504 | signatures! |
505 | |
506 | Note that the last line will match a "generic" 18XX bios. Because |
507 | Future Domain has changed the host SCSI ID and/or the location of the |
508 | geometry information in the on-board RAM area for each of the first |
509 | three BIOS's, it is still important to enter a fully qualified |
510 | signature in the table for any new BIOS's (after the host SCSI ID and |
511 | geometry location are verified). */ |
512 | }; |
513 | |
514 | #define SIGNATURE_COUNT ARRAY_SIZE(signatures) |
515 | |
516 | #endif /* !PCMCIA */ |
517 | |
518 | static void print_banner( struct Scsi_Host *shpnt ) |
519 | { |
520 | if (!shpnt) return; /* This won't ever happen */ |
521 | |
522 | if (bios_major < 0 && bios_minor < 0) { |
523 | printk(KERN_INFO "scsi%d: <fdomain> No BIOS; using scsi id %d\n", |
524 | shpnt->host_no, shpnt->this_id); |
525 | } else { |
526 | printk(KERN_INFO "scsi%d: <fdomain> BIOS version ", shpnt->host_no); |
527 | |
528 | if (bios_major >= 0) printk("%d.", bios_major); |
529 | else printk("?."); |
530 | |
531 | if (bios_minor >= 0) printk("%d", bios_minor); |
532 | else printk("?."); |
533 | |
534 | printk( " at 0x%lx using scsi id %d\n", |
535 | bios_base, shpnt->this_id ); |
536 | } |
537 | |
538 | /* If this driver works for later FD PCI |
539 | boards, we will have to modify banner |
540 | for additional PCI cards, but for now if |
541 | it's PCI it's a TMC-3260 - JTM */ |
542 | printk(KERN_INFO "scsi%d: <fdomain> %s chip at 0x%x irq ", |
543 | shpnt->host_no, |
544 | chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")), |
545 | port_base); |
546 | |
547 | if (interrupt_level) |
548 | printk("%d", interrupt_level); |
549 | else |
550 | printk("<none>"); |
551 | |
552 | printk( "\n" ); |
553 | } |
554 | |
555 | int fdomain_setup(char *str) |
556 | { |
557 | int ints[4]; |
558 | |
559 | (void)get_options(str, ARRAY_SIZE(ints), ints); |
560 | |
561 | if (setup_called++ || ints[0] < 2 || ints[0] > 3) { |
562 | printk(KERN_INFO "scsi: <fdomain> Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n"); |
563 | printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n"); |
564 | return 0; |
565 | } |
566 | |
567 | port_base = ints[0] >= 1 ? ints[1] : 0; |
568 | interrupt_level = ints[0] >= 2 ? ints[2] : 0; |
569 | this_id = ints[0] >= 3 ? ints[3] : 0; |
570 | |
571 | bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */ |
572 | ++setup_called; |
573 | return 1; |
574 | } |
575 | |
576 | __setup("fdomain=", fdomain_setup); |
577 | |
578 | |
579 | static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */ |
580 | { |
581 | mdelay(10*amount); |
582 | } |
583 | |
584 | static inline void fdomain_make_bus_idle( void ) |
585 | { |
586 | outb(0, port_base + SCSI_Cntl); |
587 | outb(0, port_base + SCSI_Mode_Cntl); |
588 | if (chip == tmc18c50 || chip == tmc18c30) |
589 | outb(0x21 | PARITY_MASK, port_base + TMC_Cntl); /* Clear forced intr. */ |
590 | else |
591 | outb(0x01 | PARITY_MASK, port_base + TMC_Cntl); |
592 | } |
593 | |
594 | static int fdomain_is_valid_port( int port ) |
595 | { |
596 | #if DEBUG_DETECT |
597 | printk( " (%x%x),", |
598 | inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) ); |
599 | #endif |
600 | |
601 | /* The MCA ID is a unique id for each MCA compatible board. We |
602 | are using ISA boards, but Future Domain provides the MCA ID |
603 | anyway. We can use this ID to ensure that this is a Future |
604 | Domain TMC-1660/TMC-1680. |
605 | */ |
606 | |
607 | if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */ |
608 | if (inb( port + LSB_ID_Code ) != 0x27) return 0; |
609 | if (inb( port + MSB_ID_Code ) != 0x61) return 0; |
610 | chip = tmc1800; |
611 | } else { /* test for 0xe960 id */ |
612 | if (inb( port + MSB_ID_Code ) != 0x60) return 0; |
613 | chip = tmc18c50; |
614 | |
615 | /* Try to toggle 32-bit mode. This only |
616 | works on an 18c30 chip. (User reports |
617 | say this works, so we should switch to |
618 | it in the near future.) */ |
619 | |
620 | outb( 0x80, port + IO_Control ); |
621 | if ((inb( port + Configuration2 ) & 0x80) == 0x80) { |
622 | outb( 0x00, port + IO_Control ); |
623 | if ((inb( port + Configuration2 ) & 0x80) == 0x00) { |
624 | chip = tmc18c30; |
625 | FIFO_Size = 0x800; /* 2k FIFO */ |
626 | } |
627 | } |
628 | /* If that failed, we are an 18c50. */ |
629 | } |
630 | |
631 | return 1; |
632 | } |
633 | |
634 | static int fdomain_test_loopback( void ) |
635 | { |
636 | int i; |
637 | int result; |
638 | |
639 | for (i = 0; i < 255; i++) { |
640 | outb( i, port_base + Write_Loopback ); |
641 | result = inb( port_base + Read_Loopback ); |
642 | if (i != result) |
643 | return 1; |
644 | } |
645 | return 0; |
646 | } |
647 | |
648 | #ifndef PCMCIA |
649 | |
650 | /* fdomain_get_irq assumes that we have a valid MCA ID for a |
651 | TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the |
652 | bios_base matches these ports. If someone was unlucky enough to have |
653 | purchased more than one Future Domain board, then they will have to |
654 | modify this code, as we only detect one board here. [The one with the |
655 | lowest bios_base.] |
656 | |
657 | Note that this routine is only used for systems without a PCI BIOS32 |
658 | (e.g., ISA bus). For PCI bus systems, this routine will likely fail |
659 | unless one of the IRQs listed in the ints array is used by the board. |
660 | Sometimes it is possible to use the computer's BIOS setup screen to |
661 | configure a PCI system so that one of these IRQs will be used by the |
662 | Future Domain card. */ |
663 | |
664 | static int fdomain_get_irq( int base ) |
665 | { |
666 | int options = inb(base + Configuration1); |
667 | |
668 | #if DEBUG_DETECT |
669 | printk("scsi: <fdomain> Options = %x\n", options); |
670 | #endif |
671 | |
672 | /* Check for board with lowest bios_base -- |
673 | this isn't valid for the 18c30 or for |
674 | boards on the PCI bus, so just assume we |
675 | have the right board. */ |
676 | |
677 | if (chip != tmc18c30 && !PCI_bus && addresses[(options & 0xc0) >> 6 ] != bios_base) |
678 | return 0; |
679 | return ints[(options & 0x0e) >> 1]; |
680 | } |
681 | |
682 | static int fdomain_isa_detect( int *irq, int *iobase ) |
683 | { |
684 | int i, j; |
685 | int base = 0xdeadbeef; |
686 | int flag = 0; |
687 | |
688 | #if DEBUG_DETECT |
689 | printk( "scsi: <fdomain> fdomain_isa_detect:" ); |
690 | #endif |
691 | |
692 | for (i = 0; i < ADDRESS_COUNT; i++) { |
693 | void __iomem *p = ioremap(addresses[i], 0x2000); |
694 | if (!p) |
695 | continue; |
696 | #if DEBUG_DETECT |
697 | printk( " %lx(%lx),", addresses[i], bios_base ); |
698 | #endif |
699 | for (j = 0; j < SIGNATURE_COUNT; j++) { |
700 | if (check_signature(p + signatures[j].sig_offset, |
701 | signatures[j].signature, |
702 | signatures[j].sig_length )) { |
703 | bios_major = signatures[j].major_bios_version; |
704 | bios_minor = signatures[j].minor_bios_version; |
705 | PCI_bus = (signatures[j].flag == 1); |
706 | Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0; |
707 | bios_base = addresses[i]; |
708 | bios_mem = p; |
709 | goto found; |
710 | } |
711 | } |
712 | iounmap(p); |
713 | } |
714 | |
715 | found: |
716 | if (bios_major == 2) { |
717 | /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM. |
718 | Assuming the ROM is enabled (otherwise we wouldn't have been |
719 | able to read the ROM signature :-), then the ROM sets up the |
720 | RAM area with some magic numbers, such as a list of port |
721 | base addresses and a list of the disk "geometry" reported to |
722 | DOS (this geometry has nothing to do with physical geometry). |
723 | */ |
724 | |
725 | switch (Quantum) { |
726 | case 2: /* ISA_200S */ |
727 | case 3: /* ISA_250MG */ |
728 | base = readb(bios_mem + 0x1fa2) + (readb(bios_mem + 0x1fa3) << 8); |
729 | break; |
730 | case 4: /* ISA_200S (another one) */ |
731 | base = readb(bios_mem + 0x1fa3) + (readb(bios_mem + 0x1fa4) << 8); |
732 | break; |
733 | default: |
734 | base = readb(bios_mem + 0x1fcc) + (readb(bios_mem + 0x1fcd) << 8); |
735 | break; |
736 | } |
737 | |
738 | #if DEBUG_DETECT |
739 | printk( " %x,", base ); |
740 | #endif |
741 | |
742 | for (i = 0; i < PORT_COUNT; i++) { |
743 | if (base == ports[i]) { |
744 | if (!request_region(base, 0x10, "fdomain")) |
745 | break; |
746 | if (!fdomain_is_valid_port(base)) { |
747 | release_region(base, 0x10); |
748 | break; |
749 | } |
750 | *irq = fdomain_get_irq( base ); |
751 | *iobase = base; |
752 | return 1; |
753 | } |
754 | } |
755 | |
756 | /* This is a bad sign. It usually means that someone patched the |
757 | BIOS signature list (the signatures variable) to contain a BIOS |
758 | signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */ |
759 | |
760 | #if DEBUG_DETECT |
761 | printk( " RAM FAILED, " ); |
762 | #endif |
763 | } |
764 | |
765 | /* Anyway, the alternative to finding the address in the RAM is to just |
766 | search through every possible port address for one that is attached |
767 | to the Future Domain card. Don't panic, though, about reading all |
768 | these random port addresses -- there are rumors that the Future |
769 | Domain BIOS does something very similar. |
770 | |
771 | Do not, however, check ports which the kernel knows are being used by |
772 | another driver. */ |
773 | |
774 | for (i = 0; i < PORT_COUNT; i++) { |
775 | base = ports[i]; |
776 | if (!request_region(base, 0x10, "fdomain")) { |
777 | #if DEBUG_DETECT |
778 | printk( " (%x inuse),", base ); |
779 | #endif |
780 | continue; |
781 | } |
782 | #if DEBUG_DETECT |
783 | printk( " %x,", base ); |
784 | #endif |
785 | flag = fdomain_is_valid_port(base); |
786 | if (flag) |
787 | break; |
788 | release_region(base, 0x10); |
789 | } |
790 | |
791 | #if DEBUG_DETECT |
792 | if (flag) printk( " SUCCESS\n" ); |
793 | else printk( " FAILURE\n" ); |
794 | #endif |
795 | |
796 | if (!flag) return 0; /* iobase not found */ |
797 | |
798 | *irq = fdomain_get_irq( base ); |
799 | *iobase = base; |
800 | |
801 | return 1; /* success */ |
802 | } |
803 | |
804 | #else /* PCMCIA */ |
805 | |
806 | static int fdomain_isa_detect( int *irq, int *iobase ) |
807 | { |
808 | if (irq) |
809 | *irq = 0; |
810 | if (iobase) |
811 | *iobase = 0; |
812 | return 0; |
813 | } |
814 | |
815 | #endif /* !PCMCIA */ |
816 | |
817 | |
818 | /* PCI detection function: int fdomain_pci_bios_detect(int* irq, int* |
819 | iobase) This function gets the Interrupt Level and I/O base address from |
820 | the PCI configuration registers. */ |
821 | |
822 | #ifdef CONFIG_PCI |
823 | static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev ) |
824 | { |
825 | unsigned int pci_irq; /* PCI interrupt line */ |
826 | unsigned long pci_base; /* PCI I/O base address */ |
827 | struct pci_dev *pdev = NULL; |
828 | |
829 | #if DEBUG_DETECT |
830 | /* Tell how to print a list of the known PCI devices from bios32 and |
831 | list vendor and device IDs being used if in debug mode. */ |
832 | |
833 | printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" ); |
834 | printk( "scsi: <fdomain> TMC-3260 detect:" |
835 | " Using Vendor ID: 0x%x and Device ID: 0x%x\n", |
836 | PCI_VENDOR_ID_FD, |
837 | PCI_DEVICE_ID_FD_36C70 ); |
838 | #endif |
839 | |
840 | if ((pdev = pci_get_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL) |
841 | return 0; |
842 | if (pci_enable_device(pdev)) |
843 | goto fail; |
844 | |
845 | #if DEBUG_DETECT |
846 | printk( "scsi: <fdomain> TMC-3260 detect:" |
847 | " PCI bus %u, device %u, function %u\n", |
848 | pdev->bus->number, |
849 | PCI_SLOT(pdev->devfn), |
850 | PCI_FUNC(pdev->devfn)); |
851 | #endif |
852 | |
853 | /* We now have the appropriate device function for the FD board so we |
854 | just read the PCI config info from the registers. */ |
855 | |
856 | pci_base = pci_resource_start(pdev, 0); |
857 | pci_irq = pdev->irq; |
858 | |
859 | if (!request_region( pci_base, 0x10, "fdomain" )) |
860 | goto fail; |
861 | |
862 | /* Now we have the I/O base address and interrupt from the PCI |
863 | configuration registers. */ |
864 | |
865 | *irq = pci_irq; |
866 | *iobase = pci_base; |
867 | *ret_pdev = pdev; |
868 | |
869 | #if DEBUG_DETECT |
870 | printk( "scsi: <fdomain> TMC-3260 detect:" |
871 | " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base ); |
872 | #endif |
873 | |
874 | if (!fdomain_is_valid_port(pci_base)) { |
875 | printk(KERN_ERR "scsi: <fdomain> PCI card detected, but driver not loaded (invalid port)\n" ); |
876 | release_region(pci_base, 0x10); |
877 | goto fail; |
878 | } |
879 | |
880 | /* Fill in a few global variables. Ugh. */ |
881 | bios_major = bios_minor = -1; |
882 | PCI_bus = 1; |
883 | PCI_dev = pdev; |
884 | Quantum = 0; |
885 | bios_base = 0; |
886 | |
887 | return 1; |
888 | fail: |
889 | pci_dev_put(pdev); |
890 | return 0; |
891 | } |
892 | |
893 | #endif |
894 | |
895 | struct Scsi_Host *__fdomain_16x0_detect(struct scsi_host_template *tpnt ) |
896 | { |
897 | int retcode; |
898 | struct Scsi_Host *shpnt; |
899 | struct pci_dev *pdev = NULL; |
900 | |
901 | if (setup_called) { |
902 | #if DEBUG_DETECT |
903 | printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n", |
904 | port_base, interrupt_level ); |
905 | #endif |
906 | if (!request_region(port_base, 0x10, "fdomain")) { |
907 | printk( "scsi: <fdomain> port 0x%x is busy\n", port_base ); |
908 | printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); |
909 | return NULL; |
910 | } |
911 | if (!fdomain_is_valid_port( port_base )) { |
912 | printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n", |
913 | port_base ); |
914 | printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); |
915 | release_region(port_base, 0x10); |
916 | return NULL; |
917 | } |
918 | } else { |
919 | int flag = 0; |
920 | |
921 | #ifdef CONFIG_PCI |
922 | /* Try PCI detection first */ |
923 | flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev ); |
924 | #endif |
925 | if (!flag) { |
926 | /* Then try ISA bus detection */ |
927 | flag = fdomain_isa_detect( &interrupt_level, &port_base ); |
928 | |
929 | if (!flag) { |
930 | printk( "scsi: <fdomain> Detection failed (no card)\n" ); |
931 | return NULL; |
932 | } |
933 | } |
934 | } |
935 | |
936 | fdomain_16x0_bus_reset(NULL); |
937 | |
938 | if (fdomain_test_loopback()) { |
939 | printk(KERN_ERR "scsi: <fdomain> Detection failed (loopback test failed at port base 0x%x)\n", port_base); |
940 | if (setup_called) { |
941 | printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n"); |
942 | } |
943 | goto fail; |
944 | } |
945 | |
946 | if (this_id) { |
947 | tpnt->this_id = (this_id & 0x07); |
948 | adapter_mask = (1 << tpnt->this_id); |
949 | } else { |
950 | if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) { |
951 | tpnt->this_id = 7; |
952 | adapter_mask = 0x80; |
953 | } else { |
954 | tpnt->this_id = 6; |
955 | adapter_mask = 0x40; |
956 | } |
957 | } |
958 | |
959 | /* Print out a banner here in case we can't |
960 | get resources. */ |
961 | |
962 | shpnt = scsi_register( tpnt, 0 ); |
963 | if(shpnt == NULL) { |
964 | release_region(port_base, 0x10); |
965 | return NULL; |
966 | } |
967 | shpnt->irq = interrupt_level; |
968 | shpnt->io_port = port_base; |
969 | shpnt->n_io_port = 0x10; |
970 | print_banner( shpnt ); |
971 | |
972 | /* Log IRQ with kernel */ |
973 | if (!interrupt_level) { |
974 | printk(KERN_ERR "scsi: <fdomain> Card Detected, but driver not loaded (no IRQ)\n" ); |
975 | goto fail; |
976 | } else { |
977 | /* Register the IRQ with the kernel */ |
978 | |
979 | retcode = request_irq( interrupt_level, |
980 | do_fdomain_16x0_intr, pdev?IRQF_SHARED:0, "fdomain", shpnt); |
981 | |
982 | if (retcode < 0) { |
983 | if (retcode == -EINVAL) { |
984 | printk(KERN_ERR "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level ); |
985 | printk(KERN_ERR " This shouldn't happen!\n" ); |
986 | printk(KERN_ERR " Send mail to faith@acm.org\n" ); |
987 | } else if (retcode == -EBUSY) { |
988 | printk(KERN_ERR "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level ); |
989 | printk(KERN_ERR " Please use another IRQ!\n" ); |
990 | } else { |
991 | printk(KERN_ERR "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level ); |
992 | printk(KERN_ERR " This shouldn't happen!\n" ); |
993 | printk(KERN_ERR " Send mail to faith@acm.org\n" ); |
994 | } |
995 | printk(KERN_ERR "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" ); |
996 | goto fail; |
997 | } |
998 | } |
999 | return shpnt; |
1000 | fail: |
1001 | pci_dev_put(pdev); |
1002 | release_region(port_base, 0x10); |
1003 | return NULL; |
1004 | } |
1005 | |
1006 | static int fdomain_16x0_detect(struct scsi_host_template *tpnt) |
1007 | { |
1008 | if (fdomain) |
1009 | fdomain_setup(fdomain); |
1010 | return (__fdomain_16x0_detect(tpnt) != NULL); |
1011 | } |
1012 | |
1013 | static const char *fdomain_16x0_info( struct Scsi_Host *ignore ) |
1014 | { |
1015 | static char buffer[128]; |
1016 | char *pt; |
1017 | |
1018 | strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" ); |
1019 | if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */ |
1020 | strcat( buffer, strchr( VERSION, ':' ) + 1 ); |
1021 | pt = strrchr( buffer, '$') - 1; |
1022 | if (!pt) /* Stripped RCS Revision string? */ |
1023 | pt = buffer + strlen( buffer ) - 1; |
1024 | if (*pt != ' ') |
1025 | ++pt; |
1026 | *pt = '\0'; |
1027 | } else { /* Assume VERSION is a number */ |
1028 | strcat( buffer, " " VERSION ); |
1029 | } |
1030 | |
1031 | return buffer; |
1032 | } |
1033 | |
1034 | #if 0 |
1035 | static int fdomain_arbitrate( void ) |
1036 | { |
1037 | int status = 0; |
1038 | unsigned long timeout; |
1039 | |
1040 | #if EVERY_ACCESS |
1041 | printk( "fdomain_arbitrate()\n" ); |
1042 | #endif |
1043 | |
1044 | outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */ |
1045 | outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */ |
1046 | outb(0x04 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */ |
1047 | |
1048 | timeout = 500; |
1049 | do { |
1050 | status = inb(port_base + TMC_Status); /* Read adapter status */ |
1051 | if (status & 0x02) /* Arbitration complete */ |
1052 | return 0; |
1053 | mdelay(1); /* Wait one millisecond */ |
1054 | } while (--timeout); |
1055 | |
1056 | /* Make bus idle */ |
1057 | fdomain_make_bus_idle(); |
1058 | |
1059 | #if EVERY_ACCESS |
1060 | printk( "Arbitration failed, status = %x\n", status ); |
1061 | #endif |
1062 | #if ERRORS_ONLY |
1063 | printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status ); |
1064 | #endif |
1065 | return 1; |
1066 | } |
1067 | #endif |
1068 | |
1069 | static int fdomain_select( int target ) |
1070 | { |
1071 | int status; |
1072 | unsigned long timeout; |
1073 | #if ERRORS_ONLY |
1074 | static int flag = 0; |
1075 | #endif |
1076 | |
1077 | outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */ |
1078 | outb(adapter_mask | (1 << target), port_base + SCSI_Data_NoACK); |
1079 | |
1080 | /* Stop arbitration and enable parity */ |
1081 | outb(PARITY_MASK, port_base + TMC_Cntl); |
1082 | |
1083 | timeout = 350; /* 350 msec */ |
1084 | |
1085 | do { |
1086 | status = inb(port_base + SCSI_Status); /* Read adapter status */ |
1087 | if (status & 1) { /* Busy asserted */ |
1088 | /* Enable SCSI Bus (on error, should make bus idle with 0) */ |
1089 | outb(0x80, port_base + SCSI_Cntl); |
1090 | return 0; |
1091 | } |
1092 | mdelay(1); /* wait one msec */ |
1093 | } while (--timeout); |
1094 | /* Make bus idle */ |
1095 | fdomain_make_bus_idle(); |
1096 | #if EVERY_ACCESS |
1097 | if (!target) printk( "Selection failed\n" ); |
1098 | #endif |
1099 | #if ERRORS_ONLY |
1100 | if (!target) { |
1101 | if (!flag) /* Skip first failure for all chips. */ |
1102 | ++flag; |
1103 | else |
1104 | printk( "scsi: <fdomain> Selection failed\n" ); |
1105 | } |
1106 | #endif |
1107 | return 1; |
1108 | } |
1109 | |
1110 | static void my_done(int error) |
1111 | { |
1112 | if (in_command) { |
1113 | in_command = 0; |
1114 | outb(0x00, port_base + Interrupt_Cntl); |
1115 | fdomain_make_bus_idle(); |
1116 | current_SC->result = error; |
1117 | if (current_SC->scsi_done) |
1118 | current_SC->scsi_done( current_SC ); |
1119 | else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" ); |
1120 | } else { |
1121 | panic( "scsi: <fdomain> my_done() called outside of command\n" ); |
1122 | } |
1123 | #if DEBUG_RACE |
1124 | in_interrupt_flag = 0; |
1125 | #endif |
1126 | } |
1127 | |
1128 | static irqreturn_t do_fdomain_16x0_intr(int irq, void *dev_id) |
1129 | { |
1130 | unsigned long flags; |
1131 | int status; |
1132 | int done = 0; |
1133 | unsigned data_count; |
1134 | |
1135 | /* The fdomain_16x0_intr is only called via |
1136 | the interrupt handler. The goal of the |
1137 | sti() here is to allow other |
1138 | interruptions while this routine is |
1139 | running. */ |
1140 | |
1141 | /* Check for other IRQ sources */ |
1142 | if ((inb(port_base + TMC_Status) & 0x01) == 0) |
1143 | return IRQ_NONE; |
1144 | |
1145 | /* It is our IRQ */ |
1146 | outb(0x00, port_base + Interrupt_Cntl); |
1147 | |
1148 | /* We usually have one spurious interrupt after each command. Ignore it. */ |
1149 | if (!in_command || !current_SC) { /* Spurious interrupt */ |
1150 | #if EVERY_ACCESS |
1151 | printk( "Spurious interrupt, in_command = %d, current_SC = %x\n", |
1152 | in_command, current_SC ); |
1153 | #endif |
1154 | return IRQ_NONE; |
1155 | } |
1156 | |
1157 | /* Abort calls my_done, so we do nothing here. */ |
1158 | if (current_SC->SCp.phase & aborted) { |
1159 | #if DEBUG_ABORT |
1160 | printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" ); |
1161 | #endif |
1162 | /* |
1163 | return IRQ_HANDLED; */ |
1164 | } |
1165 | |
1166 | #if DEBUG_RACE |
1167 | ++in_interrupt_flag; |
1168 | #endif |
1169 | |
1170 | if (current_SC->SCp.phase & in_arbitration) { |
1171 | status = inb(port_base + TMC_Status); /* Read adapter status */ |
1172 | if (!(status & 0x02)) { |
1173 | #if EVERY_ACCESS |
1174 | printk( " AFAIL " ); |
1175 | #endif |
1176 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
1177 | my_done( DID_BUS_BUSY << 16 ); |
1178 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
1179 | return IRQ_HANDLED; |
1180 | } |
1181 | current_SC->SCp.phase = in_selection; |
1182 | |
1183 | outb(0x40 | FIFO_COUNT, port_base + Interrupt_Cntl); |
1184 | |
1185 | outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */ |
1186 | outb(adapter_mask | (1 << scmd_id(current_SC)), port_base + SCSI_Data_NoACK); |
1187 | |
1188 | /* Stop arbitration and enable parity */ |
1189 | outb(0x10 | PARITY_MASK, port_base + TMC_Cntl); |
1190 | #if DEBUG_RACE |
1191 | in_interrupt_flag = 0; |
1192 | #endif |
1193 | return IRQ_HANDLED; |
1194 | } else if (current_SC->SCp.phase & in_selection) { |
1195 | status = inb(port_base + SCSI_Status); |
1196 | if (!(status & 0x01)) { |
1197 | /* Try again, for slow devices */ |
1198 | if (fdomain_select( scmd_id(current_SC) )) { |
1199 | #if EVERY_ACCESS |
1200 | printk( " SFAIL " ); |
1201 | #endif |
1202 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
1203 | my_done( DID_NO_CONNECT << 16 ); |
1204 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
1205 | return IRQ_HANDLED; |
1206 | } else { |
1207 | #if EVERY_ACCESS |
1208 | printk( " AltSel " ); |
1209 | #endif |
1210 | /* Stop arbitration and enable parity */ |
1211 | outb(0x10 | PARITY_MASK, port_base + TMC_Cntl); |
1212 | } |
1213 | } |
1214 | current_SC->SCp.phase = in_other; |
1215 | outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl); |
1216 | outb(0x80, port_base + SCSI_Cntl); |
1217 | #if DEBUG_RACE |
1218 | in_interrupt_flag = 0; |
1219 | #endif |
1220 | return IRQ_HANDLED; |
1221 | } |
1222 | |
1223 | /* current_SC->SCp.phase == in_other: this is the body of the routine */ |
1224 | |
1225 | status = inb(port_base + SCSI_Status); |
1226 | |
1227 | if (status & 0x10) { /* REQ */ |
1228 | |
1229 | switch (status & 0x0e) { |
1230 | |
1231 | case 0x08: /* COMMAND OUT */ |
1232 | outb(current_SC->cmnd[current_SC->SCp.sent_command++], |
1233 | port_base + Write_SCSI_Data); |
1234 | #if EVERY_ACCESS |
1235 | printk( "CMD = %x,", |
1236 | current_SC->cmnd[ current_SC->SCp.sent_command - 1] ); |
1237 | #endif |
1238 | break; |
1239 | case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */ |
1240 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { |
1241 | current_SC->SCp.have_data_in = -1; |
1242 | outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl); |
1243 | } |
1244 | break; |
1245 | case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */ |
1246 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { |
1247 | current_SC->SCp.have_data_in = 1; |
1248 | outb(0x90 | PARITY_MASK, port_base + TMC_Cntl); |
1249 | } |
1250 | break; |
1251 | case 0x0c: /* STATUS IN */ |
1252 | current_SC->SCp.Status = inb(port_base + Read_SCSI_Data); |
1253 | #if EVERY_ACCESS |
1254 | printk( "Status = %x, ", current_SC->SCp.Status ); |
1255 | #endif |
1256 | #if ERRORS_ONLY |
1257 | if (current_SC->SCp.Status |
1258 | && current_SC->SCp.Status != 2 |
1259 | && current_SC->SCp.Status != 8) { |
1260 | printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n", |
1261 | current_SC->device->id, |
1262 | current_SC->cmnd[0], |
1263 | current_SC->SCp.Status ); |
1264 | } |
1265 | #endif |
1266 | break; |
1267 | case 0x0a: /* MESSAGE OUT */ |
1268 | outb(MESSAGE_REJECT, port_base + Write_SCSI_Data); /* Reject */ |
1269 | break; |
1270 | case 0x0e: /* MESSAGE IN */ |
1271 | current_SC->SCp.Message = inb(port_base + Read_SCSI_Data); |
1272 | #if EVERY_ACCESS |
1273 | printk( "Message = %x, ", current_SC->SCp.Message ); |
1274 | #endif |
1275 | if (!current_SC->SCp.Message) ++done; |
1276 | #if DEBUG_MESSAGES || EVERY_ACCESS |
1277 | if (current_SC->SCp.Message) { |
1278 | printk( "scsi: <fdomain> message = %x\n", |
1279 | current_SC->SCp.Message ); |
1280 | } |
1281 | #endif |
1282 | break; |
1283 | } |
1284 | } |
1285 | |
1286 | if (chip == tmc1800 && !current_SC->SCp.have_data_in |
1287 | && (current_SC->SCp.sent_command >= current_SC->cmd_len)) { |
1288 | |
1289 | if(current_SC->sc_data_direction == DMA_TO_DEVICE) |
1290 | { |
1291 | current_SC->SCp.have_data_in = -1; |
1292 | outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl); |
1293 | } |
1294 | else |
1295 | { |
1296 | current_SC->SCp.have_data_in = 1; |
1297 | outb(0x90 | PARITY_MASK, port_base + TMC_Cntl); |
1298 | } |
1299 | } |
1300 | |
1301 | if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */ |
1302 | while ((data_count = FIFO_Size - inw(port_base + FIFO_Data_Count)) > 512) { |
1303 | #if EVERY_ACCESS |
1304 | printk( "DC=%d, ", data_count ) ; |
1305 | #endif |
1306 | if (data_count > current_SC->SCp.this_residual) |
1307 | data_count = current_SC->SCp.this_residual; |
1308 | if (data_count > 0) { |
1309 | #if EVERY_ACCESS |
1310 | printk( "%d OUT, ", data_count ); |
1311 | #endif |
1312 | if (data_count == 1) { |
1313 | outb(*current_SC->SCp.ptr++, port_base + Write_FIFO); |
1314 | --current_SC->SCp.this_residual; |
1315 | } else { |
1316 | data_count >>= 1; |
1317 | outsw(port_base + Write_FIFO, current_SC->SCp.ptr, data_count); |
1318 | current_SC->SCp.ptr += 2 * data_count; |
1319 | current_SC->SCp.this_residual -= 2 * data_count; |
1320 | } |
1321 | } |
1322 | if (!current_SC->SCp.this_residual) { |
1323 | if (current_SC->SCp.buffers_residual) { |
1324 | --current_SC->SCp.buffers_residual; |
1325 | ++current_SC->SCp.buffer; |
1326 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); |
1327 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
1328 | } else |
1329 | break; |
1330 | } |
1331 | } |
1332 | } |
1333 | |
1334 | if (current_SC->SCp.have_data_in == 1) { /* DATA IN */ |
1335 | while ((data_count = inw(port_base + FIFO_Data_Count)) > 0) { |
1336 | #if EVERY_ACCESS |
1337 | printk( "DC=%d, ", data_count ); |
1338 | #endif |
1339 | if (data_count > current_SC->SCp.this_residual) |
1340 | data_count = current_SC->SCp.this_residual; |
1341 | if (data_count) { |
1342 | #if EVERY_ACCESS |
1343 | printk( "%d IN, ", data_count ); |
1344 | #endif |
1345 | if (data_count == 1) { |
1346 | *current_SC->SCp.ptr++ = inb(port_base + Read_FIFO); |
1347 | --current_SC->SCp.this_residual; |
1348 | } else { |
1349 | data_count >>= 1; /* Number of words */ |
1350 | insw(port_base + Read_FIFO, current_SC->SCp.ptr, data_count); |
1351 | current_SC->SCp.ptr += 2 * data_count; |
1352 | current_SC->SCp.this_residual -= 2 * data_count; |
1353 | } |
1354 | } |
1355 | if (!current_SC->SCp.this_residual |
1356 | && current_SC->SCp.buffers_residual) { |
1357 | --current_SC->SCp.buffers_residual; |
1358 | ++current_SC->SCp.buffer; |
1359 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); |
1360 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
1361 | } |
1362 | } |
1363 | } |
1364 | |
1365 | if (done) { |
1366 | #if EVERY_ACCESS |
1367 | printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in ); |
1368 | #endif |
1369 | |
1370 | #if ERRORS_ONLY |
1371 | if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) { |
1372 | char *buf = scsi_sglist(current_SC); |
1373 | if ((unsigned char)(*(buf + 2)) & 0x0f) { |
1374 | unsigned char key; |
1375 | unsigned char code; |
1376 | unsigned char qualifier; |
1377 | |
1378 | key = (unsigned char)(*(buf + 2)) & 0x0f; |
1379 | code = (unsigned char)(*(buf + 12)); |
1380 | qualifier = (unsigned char)(*(buf + 13)); |
1381 | |
1382 | if (key != UNIT_ATTENTION |
1383 | && !(key == NOT_READY |
1384 | && code == 0x04 |
1385 | && (!qualifier || qualifier == 0x02 || qualifier == 0x01)) |
1386 | && !(key == ILLEGAL_REQUEST && (code == 0x25 |
1387 | || code == 0x24 |
1388 | || !code))) |
1389 | |
1390 | printk( "scsi: <fdomain> REQUEST SENSE" |
1391 | " Key = %x, Code = %x, Qualifier = %x\n", |
1392 | key, code, qualifier ); |
1393 | } |
1394 | } |
1395 | #endif |
1396 | #if EVERY_ACCESS |
1397 | printk( "BEFORE MY_DONE. . ." ); |
1398 | #endif |
1399 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
1400 | my_done( (current_SC->SCp.Status & 0xff) |
1401 | | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) ); |
1402 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
1403 | #if EVERY_ACCESS |
1404 | printk( "RETURNING.\n" ); |
1405 | #endif |
1406 | |
1407 | } else { |
1408 | if (current_SC->SCp.phase & disconnect) { |
1409 | outb(0xd0 | FIFO_COUNT, port_base + Interrupt_Cntl); |
1410 | outb(0x00, port_base + SCSI_Cntl); |
1411 | } else { |
1412 | outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl); |
1413 | } |
1414 | } |
1415 | #if DEBUG_RACE |
1416 | in_interrupt_flag = 0; |
1417 | #endif |
1418 | return IRQ_HANDLED; |
1419 | } |
1420 | |
1421 | static int fdomain_16x0_queue_lck(struct scsi_cmnd *SCpnt, |
1422 | void (*done)(struct scsi_cmnd *)) |
1423 | { |
1424 | if (in_command) { |
1425 | panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" ); |
1426 | } |
1427 | #if EVERY_ACCESS |
1428 | printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n", |
1429 | SCpnt->target, |
1430 | *(unsigned char *)SCpnt->cmnd, |
1431 | scsi_sg_count(SCpnt), |
1432 | scsi_bufflen(SCpnt)); |
1433 | #endif |
1434 | |
1435 | fdomain_make_bus_idle(); |
1436 | |
1437 | current_SC = SCpnt; /* Save this for the done function */ |
1438 | current_SC->scsi_done = done; |
1439 | |
1440 | /* Initialize static data */ |
1441 | |
1442 | if (scsi_sg_count(current_SC)) { |
1443 | current_SC->SCp.buffer = scsi_sglist(current_SC); |
1444 | current_SC->SCp.ptr = sg_virt(current_SC->SCp.buffer); |
1445 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
1446 | current_SC->SCp.buffers_residual = scsi_sg_count(current_SC) - 1; |
1447 | } else { |
1448 | current_SC->SCp.ptr = NULL; |
1449 | current_SC->SCp.this_residual = 0; |
1450 | current_SC->SCp.buffer = NULL; |
1451 | current_SC->SCp.buffers_residual = 0; |
1452 | } |
1453 | |
1454 | current_SC->SCp.Status = 0; |
1455 | current_SC->SCp.Message = 0; |
1456 | current_SC->SCp.have_data_in = 0; |
1457 | current_SC->SCp.sent_command = 0; |
1458 | current_SC->SCp.phase = in_arbitration; |
1459 | |
1460 | /* Start arbitration */ |
1461 | outb(0x00, port_base + Interrupt_Cntl); |
1462 | outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */ |
1463 | outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */ |
1464 | ++in_command; |
1465 | outb(0x20, port_base + Interrupt_Cntl); |
1466 | outb(0x14 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */ |
1467 | |
1468 | return 0; |
1469 | } |
1470 | |
1471 | static DEF_SCSI_QCMD(fdomain_16x0_queue) |
1472 | |
1473 | #if DEBUG_ABORT |
1474 | static void print_info(struct scsi_cmnd *SCpnt) |
1475 | { |
1476 | unsigned int imr; |
1477 | unsigned int irr; |
1478 | unsigned int isr; |
1479 | |
1480 | if (!SCpnt || !SCpnt->device || !SCpnt->device->host) { |
1481 | printk(KERN_WARNING "scsi: <fdomain> Cannot provide detailed information\n"); |
1482 | return; |
1483 | } |
1484 | |
1485 | printk(KERN_INFO "%s\n", fdomain_16x0_info( SCpnt->device->host ) ); |
1486 | print_banner(SCpnt->device->host); |
1487 | switch (SCpnt->SCp.phase) { |
1488 | case in_arbitration: printk("arbitration"); break; |
1489 | case in_selection: printk("selection"); break; |
1490 | case in_other: printk("other"); break; |
1491 | default: printk("unknown"); break; |
1492 | } |
1493 | |
1494 | printk( " (%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n", |
1495 | SCpnt->SCp.phase, |
1496 | SCpnt->device->id, |
1497 | *(unsigned char *)SCpnt->cmnd, |
1498 | scsi_sg_count(SCpnt), |
1499 | scsi_bufflen(SCpnt)); |
1500 | printk( "sent_command = %d, have_data_in = %d, timeout = %d\n", |
1501 | SCpnt->SCp.sent_command, |
1502 | SCpnt->SCp.have_data_in, |
1503 | SCpnt->timeout ); |
1504 | #if DEBUG_RACE |
1505 | printk( "in_interrupt_flag = %d\n", in_interrupt_flag ); |
1506 | #endif |
1507 | |
1508 | imr = (inb( 0x0a1 ) << 8) + inb( 0x21 ); |
1509 | outb( 0x0a, 0xa0 ); |
1510 | irr = inb( 0xa0 ) << 8; |
1511 | outb( 0x0a, 0x20 ); |
1512 | irr += inb( 0x20 ); |
1513 | outb( 0x0b, 0xa0 ); |
1514 | isr = inb( 0xa0 ) << 8; |
1515 | outb( 0x0b, 0x20 ); |
1516 | isr += inb( 0x20 ); |
1517 | |
1518 | /* Print out interesting information */ |
1519 | printk( "IMR = 0x%04x", imr ); |
1520 | if (imr & (1 << interrupt_level)) |
1521 | printk( " (masked)" ); |
1522 | printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr ); |
1523 | |
1524 | printk( "SCSI Status = 0x%02x\n", inb(port_base + SCSI_Status)); |
1525 | printk( "TMC Status = 0x%02x", inb(port_base + TMC_Status)); |
1526 | if (inb((port_base + TMC_Status) & 1)) |
1527 | printk( " (interrupt)" ); |
1528 | printk( "\n" ); |
1529 | printk("Interrupt Status = 0x%02x", inb(port_base + Interrupt_Status)); |
1530 | if (inb(port_base + Interrupt_Status) & 0x08) |
1531 | printk( " (enabled)" ); |
1532 | printk( "\n" ); |
1533 | if (chip == tmc18c50 || chip == tmc18c30) { |
1534 | printk("FIFO Status = 0x%02x\n", inb(port_base + FIFO_Status)); |
1535 | printk( "Int. Condition = 0x%02x\n", |
1536 | inb( port_base + Interrupt_Cond ) ); |
1537 | } |
1538 | printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) ); |
1539 | if (chip == tmc18c50 || chip == tmc18c30) |
1540 | printk( "Configuration 2 = 0x%02x\n", |
1541 | inb( port_base + Configuration2 ) ); |
1542 | } |
1543 | #endif |
1544 | |
1545 | static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt) |
1546 | { |
1547 | #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT |
1548 | printk( "scsi: <fdomain> abort " ); |
1549 | #endif |
1550 | |
1551 | if (!in_command) { |
1552 | #if EVERY_ACCESS || ERRORS_ONLY |
1553 | printk( " (not in command)\n" ); |
1554 | #endif |
1555 | return FAILED; |
1556 | } else printk( "\n" ); |
1557 | |
1558 | #if DEBUG_ABORT |
1559 | print_info( SCpnt ); |
1560 | #endif |
1561 | |
1562 | fdomain_make_bus_idle(); |
1563 | current_SC->SCp.phase |= aborted; |
1564 | current_SC->result = DID_ABORT << 16; |
1565 | |
1566 | /* Aborts are not done well. . . */ |
1567 | my_done(DID_ABORT << 16); |
1568 | return SUCCESS; |
1569 | } |
1570 | |
1571 | int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt) |
1572 | { |
1573 | unsigned long flags; |
1574 | |
1575 | local_irq_save(flags); |
1576 | |
1577 | outb(1, port_base + SCSI_Cntl); |
1578 | do_pause( 2 ); |
1579 | outb(0, port_base + SCSI_Cntl); |
1580 | do_pause( 115 ); |
1581 | outb(0, port_base + SCSI_Mode_Cntl); |
1582 | outb(PARITY_MASK, port_base + TMC_Cntl); |
1583 | |
1584 | local_irq_restore(flags); |
1585 | return SUCCESS; |
1586 | } |
1587 | |
1588 | static int fdomain_16x0_biosparam(struct scsi_device *sdev, |
1589 | struct block_device *bdev, |
1590 | sector_t capacity, int *info_array) |
1591 | { |
1592 | int drive; |
1593 | int size = capacity; |
1594 | unsigned long offset; |
1595 | struct drive_info { |
1596 | unsigned short cylinders; |
1597 | unsigned char heads; |
1598 | unsigned char sectors; |
1599 | } i; |
1600 | |
1601 | /* NOTES: |
1602 | The RAM area starts at 0x1f00 from the bios_base address. |
1603 | |
1604 | For BIOS Version 2.0: |
1605 | |
1606 | The drive parameter table seems to start at 0x1f30. |
1607 | The first byte's purpose is not known. |
1608 | Next is the cylinder, head, and sector information. |
1609 | The last 4 bytes appear to be the drive's size in sectors. |
1610 | The other bytes in the drive parameter table are unknown. |
1611 | If anyone figures them out, please send me mail, and I will |
1612 | update these notes. |
1613 | |
1614 | Tape drives do not get placed in this table. |
1615 | |
1616 | There is another table at 0x1fea: |
1617 | If the byte is 0x01, then the SCSI ID is not in use. |
1618 | If the byte is 0x18 or 0x48, then the SCSI ID is in use, |
1619 | although tapes don't seem to be in this table. I haven't |
1620 | seen any other numbers (in a limited sample). |
1621 | |
1622 | 0x1f2d is a drive count (i.e., not including tapes) |
1623 | |
1624 | The table at 0x1fcc are I/O ports addresses for the various |
1625 | operations. I calculate these by hand in this driver code. |
1626 | |
1627 | |
1628 | |
1629 | For the ISA-200S version of BIOS Version 2.0: |
1630 | |
1631 | The drive parameter table starts at 0x1f33. |
1632 | |
1633 | WARNING: Assume that the table entry is 25 bytes long. Someone needs |
1634 | to check this for the Quantum ISA-200S card. |
1635 | |
1636 | |
1637 | |
1638 | For BIOS Version 3.2: |
1639 | |
1640 | The drive parameter table starts at 0x1f70. Each entry is |
1641 | 0x0a bytes long. Heads are one less than we need to report. |
1642 | */ |
1643 | |
1644 | if (MAJOR(bdev->bd_dev) != SCSI_DISK0_MAJOR) { |
1645 | printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks"); |
1646 | return 0; |
1647 | } |
1648 | drive = MINOR(bdev->bd_dev) >> 4; |
1649 | |
1650 | if (bios_major == 2) { |
1651 | switch (Quantum) { |
1652 | case 2: /* ISA_200S */ |
1653 | /* The value of 25 has never been verified. |
1654 | It should probably be 15. */ |
1655 | offset = 0x1f33 + drive * 25; |
1656 | break; |
1657 | case 3: /* ISA_250MG */ |
1658 | offset = 0x1f36 + drive * 15; |
1659 | break; |
1660 | case 4: /* ISA_200S (another one) */ |
1661 | offset = 0x1f34 + drive * 15; |
1662 | break; |
1663 | default: |
1664 | offset = 0x1f31 + drive * 25; |
1665 | break; |
1666 | } |
1667 | memcpy_fromio( &i, bios_mem + offset, sizeof( struct drive_info ) ); |
1668 | info_array[0] = i.heads; |
1669 | info_array[1] = i.sectors; |
1670 | info_array[2] = i.cylinders; |
1671 | } else if (bios_major == 3 |
1672 | && bios_minor >= 0 |
1673 | && bios_minor < 4) { /* 3.0 and 3.2 BIOS */ |
1674 | memcpy_fromio( &i, bios_mem + 0x1f71 + drive * 10, |
1675 | sizeof( struct drive_info ) ); |
1676 | info_array[0] = i.heads + 1; |
1677 | info_array[1] = i.sectors; |
1678 | info_array[2] = i.cylinders; |
1679 | } else { /* 3.4 BIOS (and up?) */ |
1680 | /* This algorithm was provided by Future Domain (much thanks!). */ |
1681 | unsigned char *p = scsi_bios_ptable(bdev); |
1682 | |
1683 | if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */ |
1684 | && p[4]) { /* Partition type */ |
1685 | |
1686 | /* The partition table layout is as follows: |
1687 | |
1688 | Start: 0x1b3h |
1689 | Offset: 0 = partition status |
1690 | 1 = starting head |
1691 | 2 = starting sector and cylinder (word, encoded) |
1692 | 4 = partition type |
1693 | 5 = ending head |
1694 | 6 = ending sector and cylinder (word, encoded) |
1695 | 8 = starting absolute sector (double word) |
1696 | c = number of sectors (double word) |
1697 | Signature: 0x1fe = 0x55aa |
1698 | |
1699 | So, this algorithm assumes: |
1700 | 1) the first partition table is in use, |
1701 | 2) the data in the first entry is correct, and |
1702 | 3) partitions never divide cylinders |
1703 | |
1704 | Note that (1) may be FALSE for NetBSD (and other BSD flavors), |
1705 | as well as for Linux. Note also, that Linux doesn't pay any |
1706 | attention to the fields that are used by this algorithm -- it |
1707 | only uses the absolute sector data. Recent versions of Linux's |
1708 | fdisk(1) will fill this data in correctly, and forthcoming |
1709 | versions will check for consistency. |
1710 | |
1711 | Checking for a non-zero partition type is not part of the |
1712 | Future Domain algorithm, but it seemed to be a reasonable thing |
1713 | to do, especially in the Linux and BSD worlds. */ |
1714 | |
1715 | info_array[0] = p[5] + 1; /* heads */ |
1716 | info_array[1] = p[6] & 0x3f; /* sectors */ |
1717 | } else { |
1718 | |
1719 | /* Note that this new method guarantees that there will always be |
1720 | less than 1024 cylinders on a platter. This is good for drives |
1721 | up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */ |
1722 | |
1723 | if ((unsigned int)size >= 0x7e0000U) { |
1724 | info_array[0] = 0xff; /* heads = 255 */ |
1725 | info_array[1] = 0x3f; /* sectors = 63 */ |
1726 | } else if ((unsigned int)size >= 0x200000U) { |
1727 | info_array[0] = 0x80; /* heads = 128 */ |
1728 | info_array[1] = 0x3f; /* sectors = 63 */ |
1729 | } else { |
1730 | info_array[0] = 0x40; /* heads = 64 */ |
1731 | info_array[1] = 0x20; /* sectors = 32 */ |
1732 | } |
1733 | } |
1734 | /* For both methods, compute the cylinders */ |
1735 | info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] ); |
1736 | kfree(p); |
1737 | } |
1738 | |
1739 | return 0; |
1740 | } |
1741 | |
1742 | static int fdomain_16x0_release(struct Scsi_Host *shpnt) |
1743 | { |
1744 | if (shpnt->irq) |
1745 | free_irq(shpnt->irq, shpnt); |
1746 | if (shpnt->io_port && shpnt->n_io_port) |
1747 | release_region(shpnt->io_port, shpnt->n_io_port); |
1748 | if (PCI_bus) |
1749 | pci_dev_put(PCI_dev); |
1750 | return 0; |
1751 | } |
1752 | |
1753 | struct scsi_host_template fdomain_driver_template = { |
1754 | .module = THIS_MODULE, |
1755 | .name = "fdomain", |
1756 | .proc_name = "fdomain", |
1757 | .detect = fdomain_16x0_detect, |
1758 | .info = fdomain_16x0_info, |
1759 | .queuecommand = fdomain_16x0_queue, |
1760 | .eh_abort_handler = fdomain_16x0_abort, |
1761 | .eh_bus_reset_handler = fdomain_16x0_bus_reset, |
1762 | .bios_param = fdomain_16x0_biosparam, |
1763 | .release = fdomain_16x0_release, |
1764 | .can_queue = 1, |
1765 | .this_id = 6, |
1766 | .sg_tablesize = 64, |
1767 | .cmd_per_lun = 1, |
1768 | .use_clustering = DISABLE_CLUSTERING, |
1769 | }; |
1770 | |
1771 | #ifndef PCMCIA |
1772 | #ifdef CONFIG_PCI |
1773 | |
1774 | static struct pci_device_id fdomain_pci_tbl[] = { |
1775 | { PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, |
1776 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0UL }, |
1777 | { } |
1778 | }; |
1779 | MODULE_DEVICE_TABLE(pci, fdomain_pci_tbl); |
1780 | #endif |
1781 | #define driver_template fdomain_driver_template |
1782 | #include "scsi_module.c" |
1783 | |
1784 | #endif |
1785 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9