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