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 294MODULE_AUTHOR("Rickard E. Faith"); 295MODULE_DESCRIPTION("Future domain SCSI driver"); 296MODULE_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 340enum chip_type { 341 unknown = 0x00, 342 tmc1800 = 0x01, 343 tmc18c50 = 0x02, 344 tmc18c30 = 0x03, 345}; 346 347enum { 348 in_arbitration = 0x02, 349 in_selection = 0x04, 350 in_other = 0x08, 351 disconnect = 0x10, 352 aborted = 0x20, 353 sent_ident = 0x40, 354}; 355 356enum 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 373enum 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 */ 386static int port_base; 387static unsigned long bios_base; 388static void __iomem * bios_mem; 389static int bios_major; 390static int bios_minor; 391static int PCI_bus; 392#ifdef CONFIG_PCI 393static struct pci_dev *PCI_dev; 394#endif 395static int Quantum; /* Quantum board variant */ 396static int interrupt_level; 397static volatile int in_command; 398static struct scsi_cmnd *current_SC; 399static enum chip_type chip = unknown; 400static int adapter_mask; 401static int this_id; 402static int setup_called; 403 404#if DEBUG_RACE 405static volatile int in_interrupt_flag; 406#endif 407 408static int FIFO_Size = 0x2000; /* 8k FIFO for 409 pre-tmc18c30 chips */ 410 411static 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 */ 414static char * fdomain = NULL; 415module_param(fdomain, charp, 0); 416 417#ifndef PCMCIA 418 419static 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 430static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; 431#define PORT_COUNT ARRAY_SIZE(ports) 432 433static 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 471static 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 518static 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 555int 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 579static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */ 580{ 581 mdelay(10*amount); 582} 583 584static 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 594static 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 634static 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 664static 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 682static 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 715found: 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 806static 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 823static 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; 888fail: 889 pci_dev_put(pdev); 890 return 0; 891} 892 893#endif 894 895struct 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; 1000fail: 1001 pci_dev_put(pdev); 1002 release_region(port_base, 0x10); 1003 return NULL; 1004} 1005 1006static 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 1013static 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 1035static 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 1069static 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 1110static 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 1128static 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 1421static 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 1471static DEF_SCSI_QCMD(fdomain_16x0_queue) 1472 1473#if DEBUG_ABORT 1474static 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 1545static 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 1571int 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 1588static 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 1742static 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 1753struct 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 1774static 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}; 1779MODULE_DEVICE_TABLE(pci, fdomain_pci_tbl); 1780#endif 1781#define driver_template fdomain_driver_template 1782#include "scsi_module.c" 1783 1784#endif 1785