Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* fdomain.c -- Future Domain TMC-16x0 SCSI driver |
| 2 | * Created: Sun May 3 18:53:19 1992 by faith@cs.unc.edu |
| 3 | * Revised: Mon Dec 28 21:59:02 1998 by faith@acm.org |
| 4 | * Author: Rickard E. Faith, faith@cs.unc.edu |
| 5 | * Copyright 1992-1996, 1998 Rickard E. Faith (faith@acm.org) |
| 6 | * Shared IRQ supported added 7/7/2001 Alan Cox <alan@redhat.com> |
| 7 | |
| 8 | * This program is free software; you can redistribute it and/or modify it |
| 9 | * under the terms of the GNU General Public License as published by the |
| 10 | * Free Software Foundation; either version 2, or (at your option) any |
| 11 | * later version. |
| 12 | |
| 13 | * This program is distributed in the hope that it will be useful, but |
| 14 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 16 | * General Public License for more details. |
| 17 | |
| 18 | * You should have received a copy of the GNU General Public License along |
| 19 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 20 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 21 | |
| 22 | ************************************************************************** |
| 23 | |
| 24 | SUMMARY: |
| 25 | |
| 26 | Future Domain BIOS versions supported for autodetect: |
| 27 | 2.0, 3.0, 3.2, 3.4 (1.0), 3.5 (2.0), 3.6, 3.61 |
| 28 | Chips are supported: |
| 29 | TMC-1800, TMC-18C50, TMC-18C30, TMC-36C70 |
| 30 | Boards supported: |
| 31 | Future Domain TMC-1650, TMC-1660, TMC-1670, TMC-1680, TMC-1610M/MER/MEX |
| 32 | Future Domain TMC-3260 (PCI) |
| 33 | Quantum ISA-200S, ISA-250MG |
| 34 | Adaptec AHA-2920A (PCI) [BUT *NOT* AHA-2920C -- use aic7xxx instead] |
| 35 | IBM ? |
| 36 | LILO/INSMOD command-line options: |
| 37 | fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>] |
| 38 | |
| 39 | |
| 40 | |
| 41 | NOTE: |
| 42 | |
| 43 | The Adaptec AHA-2920C has an Adaptec AIC-7850 chip on it. |
| 44 | Use the aic7xxx driver for this board. |
| 45 | |
| 46 | The Adaptec AHA-2920A has a Future Domain chip on it, so this is the right |
| 47 | driver for that card. Unfortunately, the boxes will probably just say |
| 48 | "2920", so you'll have to look on the card for a Future Domain logo, or a |
| 49 | letter after the 2920. |
| 50 | |
| 51 | |
| 52 | |
| 53 | THANKS: |
| 54 | |
| 55 | Thanks to Adaptec for providing PCI boards for testing. This finally |
| 56 | enabled me to test the PCI detection and correct it for PCI boards that do |
| 57 | not have a BIOS at a standard ISA location. For PCI boards, LILO/INSMOD |
| 58 | command-line options should no longer be needed. --RF 18Nov98 |
| 59 | |
| 60 | |
| 61 | |
| 62 | DESCRIPTION: |
| 63 | |
| 64 | This is the Linux low-level SCSI driver for Future Domain TMC-1660/1680 |
| 65 | TMC-1650/1670, and TMC-3260 SCSI host adapters. The 1650 and 1670 have a |
| 66 | 25-pin external connector, whereas the 1660 and 1680 have a SCSI-2 50-pin |
| 67 | high-density external connector. The 1670 and 1680 have floppy disk |
| 68 | controllers built in. The TMC-3260 is a PCI bus card. |
| 69 | |
| 70 | Future Domain's older boards are based on the TMC-1800 chip, and this |
| 71 | driver was originally written for a TMC-1680 board with the TMC-1800 chip. |
| 72 | More recently, boards are being produced with the TMC-18C50 and TMC-18C30 |
| 73 | chips. The latest and greatest board may not work with this driver. If |
| 74 | you have to patch this driver so that it will recognize your board's BIOS |
| 75 | signature, then the driver may fail to function after the board is |
| 76 | detected. |
| 77 | |
| 78 | Please note that the drive ordering that Future Domain implemented in BIOS |
| 79 | versions 3.4 and 3.5 is the opposite of the order (currently) used by the |
| 80 | rest of the SCSI industry. If you have BIOS version 3.4 or 3.5, and have |
| 81 | more than one drive, then the drive ordering will be the reverse of that |
| 82 | which you see under DOS. For example, under DOS SCSI ID 0 will be D: and |
| 83 | SCSI ID 1 will be C: (the boot device). Under Linux, SCSI ID 0 will be |
| 84 | /dev/sda and SCSI ID 1 will be /dev/sdb. The Linux ordering is consistent |
| 85 | with that provided by all the other SCSI drivers for Linux. If you want |
| 86 | this changed, you will probably have to patch the higher level SCSI code. |
| 87 | If you do so, please send me patches that are protected by #ifdefs. |
| 88 | |
| 89 | If you have a TMC-8xx or TMC-9xx board, then this is not the driver for |
| 90 | your board. Please refer to the Seagate driver for more information and |
| 91 | possible support. |
| 92 | |
| 93 | |
| 94 | |
| 95 | HISTORY: |
| 96 | |
| 97 | Linux Driver Driver |
| 98 | Version Version Date Support/Notes |
| 99 | |
| 100 | 0.0 3 May 1992 V2.0 BIOS; 1800 chip |
| 101 | 0.97 1.9 28 Jul 1992 |
| 102 | 0.98.6 3.1 27 Nov 1992 |
| 103 | 0.99 3.2 9 Dec 1992 |
| 104 | |
| 105 | 0.99.3 3.3 10 Jan 1993 V3.0 BIOS |
| 106 | 0.99.5 3.5 18 Feb 1993 |
| 107 | 0.99.10 3.6 15 May 1993 V3.2 BIOS; 18C50 chip |
| 108 | 0.99.11 3.17 3 Jul 1993 (now under RCS) |
| 109 | 0.99.12 3.18 13 Aug 1993 |
| 110 | 0.99.14 5.6 31 Oct 1993 (reselection code removed) |
| 111 | |
| 112 | 0.99.15 5.9 23 Jan 1994 V3.4 BIOS (preliminary) |
| 113 | 1.0.8/1.1.1 5.15 1 Apr 1994 V3.4 BIOS; 18C30 chip (preliminary) |
| 114 | 1.0.9/1.1.3 5.16 7 Apr 1994 V3.4 BIOS; 18C30 chip |
| 115 | 1.1.38 5.18 30 Jul 1994 36C70 chip (PCI version of 18C30) |
| 116 | 1.1.62 5.20 2 Nov 1994 V3.5 BIOS |
| 117 | 1.1.73 5.22 7 Dec 1994 Quantum ISA-200S board; V2.0 BIOS |
| 118 | |
| 119 | 1.1.82 5.26 14 Jan 1995 V3.5 BIOS; TMC-1610M/MER/MEX board |
| 120 | 1.2.10 5.28 5 Jun 1995 Quantum ISA-250MG board; V2.0, V2.01 BIOS |
| 121 | 1.3.4 5.31 23 Jun 1995 PCI BIOS-32 detection (preliminary) |
| 122 | 1.3.7 5.33 4 Jul 1995 PCI BIOS-32 detection |
| 123 | 1.3.28 5.36 17 Sep 1995 V3.61 BIOS; LILO command-line support |
| 124 | 1.3.34 5.39 12 Oct 1995 V3.60 BIOS; /proc |
| 125 | 1.3.72 5.39 8 Feb 1996 Adaptec AHA-2920 board |
| 126 | 1.3.85 5.41 4 Apr 1996 |
| 127 | 2.0.12 5.44 8 Aug 1996 Use ID 7 for all PCI cards |
| 128 | 2.1.1 5.45 2 Oct 1996 Update ROM accesses for 2.1.x |
| 129 | 2.1.97 5.46 23 Apr 1998 Rewritten PCI detection routines [mj] |
| 130 | 2.1.11x 5.47 9 Aug 1998 Touched for 8 SCSI disk majors support |
| 131 | 5.48 18 Nov 1998 BIOS no longer needed for PCI detection |
| 132 | 2.2.0 5.50 28 Dec 1998 Support insmod parameters |
| 133 | |
| 134 | |
| 135 | REFERENCES USED: |
| 136 | |
| 137 | "TMC-1800 SCSI Chip Specification (FDC-1800T)", Future Domain Corporation, |
| 138 | 1990. |
| 139 | |
| 140 | "Technical Reference Manual: 18C50 SCSI Host Adapter Chip", Future Domain |
| 141 | Corporation, January 1992. |
| 142 | |
| 143 | "LXT SCSI Products: Specifications and OEM Technical Manual (Revision |
| 144 | B/September 1991)", Maxtor Corporation, 1991. |
| 145 | |
| 146 | "7213S product Manual (Revision P3)", Maxtor Corporation, 1992. |
| 147 | |
| 148 | "Draft Proposed American National Standard: Small Computer System |
| 149 | Interface - 2 (SCSI-2)", Global Engineering Documents. (X3T9.2/86-109, |
| 150 | revision 10h, October 17, 1991) |
| 151 | |
| 152 | Private communications, Drew Eckhardt (drew@cs.colorado.edu) and Eric |
| 153 | Youngdale (ericy@cais.com), 1992. |
| 154 | |
| 155 | Private communication, Tuong Le (Future Domain Engineering department), |
| 156 | 1994. (Disk geometry computations for Future Domain BIOS version 3.4, and |
| 157 | TMC-18C30 detection.) |
| 158 | |
| 159 | Hogan, Thom. The Programmer's PC Sourcebook. Microsoft Press, 1988. Page |
| 160 | 60 (2.39: Disk Partition Table Layout). |
| 161 | |
| 162 | "18C30 Technical Reference Manual", Future Domain Corporation, 1993, page |
| 163 | 6-1. |
| 164 | |
| 165 | |
| 166 | |
| 167 | NOTES ON REFERENCES: |
| 168 | |
| 169 | The Maxtor manuals were free. Maxtor telephone technical support is |
| 170 | great! |
| 171 | |
| 172 | The Future Domain manuals were $25 and $35. They document the chip, not |
| 173 | the TMC-16x0 boards, so some information I had to guess at. In 1992, |
| 174 | Future Domain sold DOS BIOS source for $250 and the UN*X driver source was |
| 175 | $750, but these required a non-disclosure agreement, so even if I could |
| 176 | have afforded them, they would *not* have been useful for writing this |
| 177 | publically distributable driver. Future Domain technical support has |
| 178 | provided some information on the phone and have sent a few useful FAXs. |
| 179 | They have been much more helpful since they started to recognize that the |
| 180 | word "Linux" refers to an operating system :-). |
| 181 | |
| 182 | |
| 183 | |
| 184 | ALPHA TESTERS: |
| 185 | |
| 186 | There are many other alpha testers that come and go as the driver |
| 187 | develops. The people listed here were most helpful in times of greatest |
| 188 | need (mostly early on -- I've probably left out a few worthy people in |
| 189 | more recent times): |
| 190 | |
| 191 | Todd Carrico (todd@wutc.wustl.edu), Dan Poirier (poirier@cs.unc.edu ), Ken |
| 192 | Corey (kenc@sol.acs.unt.edu), C. de Bruin (bruin@bruin@sterbbs.nl), Sakari |
| 193 | Aaltonen (sakaria@vipunen.hit.fi), John Rice (rice@xanth.cs.odu.edu), Brad |
| 194 | Yearwood (brad@optilink.com), and Ray Toy (toy@soho.crd.ge.com). |
| 195 | |
| 196 | Special thanks to Tien-Wan Yang (twyang@cs.uh.edu), who graciously lent me |
| 197 | his 18C50-based card for debugging. He is the sole reason that this |
| 198 | driver works with the 18C50 chip. |
| 199 | |
| 200 | Thanks to Dave Newman (dnewman@crl.com) for providing initial patches for |
| 201 | the version 3.4 BIOS. |
| 202 | |
| 203 | Thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for providing |
| 204 | patches that support the TMC-3260, a PCI bus card with the 36C70 chip. |
| 205 | The 36C70 chip appears to be "completely compatible" with the 18C30 chip. |
| 206 | |
| 207 | Thanks to Eric Kasten (tigger@petroglyph.cl.msu.edu) for providing the |
| 208 | patch for the version 3.5 BIOS. |
| 209 | |
| 210 | Thanks for Stephen Henson (shenson@nyx10.cs.du.edu) for providing the |
| 211 | patch for the Quantum ISA-200S SCSI adapter. |
| 212 | |
| 213 | Thanks to Adam Bowen for the signature to the 1610M/MER/MEX scsi cards, to |
| 214 | Martin Andrews (andrewm@ccfadm.eeg.ccf.org) for the signature to some |
| 215 | random TMC-1680 repackaged by IBM; and to Mintak Ng (mintak@panix.com) for |
| 216 | the version 3.61 BIOS signature. |
| 217 | |
| 218 | Thanks for Mark Singer (elf@netcom.com) and Richard Simpson |
| 219 | (rsimpson@ewrcsdra.demon.co.uk) for more Quantum signatures and detective |
| 220 | work on the Quantum RAM layout. |
| 221 | |
| 222 | Special thanks to James T. McKinley (mckinley@msupa.pa.msu.edu) for |
| 223 | providing patches for proper PCI BIOS32-mediated detection of the TMC-3260 |
| 224 | card (a PCI bus card with the 36C70 chip). Please send James PCI-related |
| 225 | bug reports. |
| 226 | |
| 227 | Thanks to Tom Cavin (tec@usa1.com) for preliminary command-line option |
| 228 | patches. |
| 229 | |
| 230 | New PCI detection code written by Martin Mares <mj@atrey.karlin.mff.cuni.cz> |
| 231 | |
| 232 | Insmod parameter code based on patches from Daniel Graham |
| 233 | <graham@balance.uoregon.edu>. |
| 234 | |
| 235 | All of the alpha testers deserve much thanks. |
| 236 | |
| 237 | |
| 238 | |
| 239 | NOTES ON USER DEFINABLE OPTIONS: |
| 240 | |
| 241 | DEBUG: This turns on the printing of various debug information. |
| 242 | |
| 243 | ENABLE_PARITY: This turns on SCSI parity checking. With the current |
| 244 | driver, all attached devices must support SCSI parity. If none of your |
| 245 | devices support parity, then you can probably get the driver to work by |
| 246 | turning this option off. I have no way of testing this, however, and it |
| 247 | would appear that no one ever uses this option. |
| 248 | |
| 249 | FIFO_COUNT: The host adapter has an 8K cache (host adapters based on the |
| 250 | 18C30 chip have a 2k cache). When this many 512 byte blocks are filled by |
| 251 | the SCSI device, an interrupt will be raised. Therefore, this could be as |
| 252 | low as 0, or as high as 16. Note, however, that values which are too high |
| 253 | or too low seem to prevent any interrupts from occurring, and thereby lock |
| 254 | up the machine. I have found that 2 is a good number, but throughput may |
| 255 | be increased by changing this value to values which are close to 2. |
| 256 | Please let me know if you try any different values. |
| 257 | |
| 258 | RESELECTION: This is no longer an option, since I gave up trying to |
| 259 | implement it in version 4.x of this driver. It did not improve |
| 260 | performance at all and made the driver unstable (because I never found one |
| 261 | of the two race conditions which were introduced by the multiple |
| 262 | outstanding command code). The instability seems a very high price to pay |
| 263 | just so that you don't have to wait for the tape to rewind. If you want |
| 264 | this feature implemented, send me patches. I'll be happy to send a copy |
| 265 | of my (broken) driver to anyone who would like to see a copy. |
| 266 | |
| 267 | **************************************************************************/ |
| 268 | |
| 269 | #include <linux/config.h> |
| 270 | #include <linux/module.h> |
| 271 | #include <linux/init.h> |
| 272 | #include <linux/interrupt.h> |
| 273 | #include <linux/blkdev.h> |
| 274 | #include <linux/spinlock.h> |
| 275 | #include <linux/errno.h> |
| 276 | #include <linux/string.h> |
| 277 | #include <linux/ioport.h> |
| 278 | #include <linux/proc_fs.h> |
| 279 | #include <linux/pci.h> |
| 280 | #include <linux/stat.h> |
| 281 | #include <linux/delay.h> |
| 282 | #include <scsi/scsicam.h> |
| 283 | |
| 284 | #include <asm/io.h> |
| 285 | #include <asm/system.h> |
| 286 | |
| 287 | #include <scsi/scsi.h> |
| 288 | #include <scsi/scsi_cmnd.h> |
| 289 | #include <scsi/scsi_device.h> |
| 290 | #include <scsi/scsi_host.h> |
| 291 | #include <scsi/scsi_ioctl.h> |
| 292 | #include "fdomain.h" |
| 293 | |
| 294 | MODULE_AUTHOR("Rickard E. Faith"); |
| 295 | MODULE_DESCRIPTION("Future domain SCSI driver"); |
| 296 | MODULE_LICENSE("GPL"); |
| 297 | |
| 298 | |
| 299 | #define VERSION "$Revision: 5.51 $" |
| 300 | |
| 301 | /* START OF USER DEFINABLE OPTIONS */ |
| 302 | |
| 303 | #define DEBUG 0 /* Enable debugging output */ |
| 304 | #define ENABLE_PARITY 1 /* Enable SCSI Parity */ |
| 305 | #define FIFO_COUNT 2 /* Number of 512 byte blocks before INTR */ |
| 306 | |
| 307 | /* END OF USER DEFINABLE OPTIONS */ |
| 308 | |
| 309 | #if DEBUG |
| 310 | #define EVERY_ACCESS 0 /* Write a line on every scsi access */ |
| 311 | #define ERRORS_ONLY 1 /* Only write a line if there is an error */ |
| 312 | #define DEBUG_DETECT 0 /* Debug fdomain_16x0_detect() */ |
| 313 | #define DEBUG_MESSAGES 1 /* Debug MESSAGE IN phase */ |
| 314 | #define DEBUG_ABORT 1 /* Debug abort() routine */ |
| 315 | #define DEBUG_RESET 1 /* Debug reset() routine */ |
| 316 | #define DEBUG_RACE 1 /* Debug interrupt-driven race condition */ |
| 317 | #else |
| 318 | #define EVERY_ACCESS 0 /* LEAVE THESE ALONE--CHANGE THE ONES ABOVE */ |
| 319 | #define ERRORS_ONLY 0 |
| 320 | #define DEBUG_DETECT 0 |
| 321 | #define DEBUG_MESSAGES 0 |
| 322 | #define DEBUG_ABORT 0 |
| 323 | #define DEBUG_RESET 0 |
| 324 | #define DEBUG_RACE 0 |
| 325 | #endif |
| 326 | |
| 327 | /* Errors are reported on the line, so we don't need to report them again */ |
| 328 | #if EVERY_ACCESS |
| 329 | #undef ERRORS_ONLY |
| 330 | #define ERRORS_ONLY 0 |
| 331 | #endif |
| 332 | |
| 333 | #if ENABLE_PARITY |
| 334 | #define PARITY_MASK 0x08 |
| 335 | #else |
| 336 | #define PARITY_MASK 0x00 |
| 337 | #endif |
| 338 | |
| 339 | enum chip_type { |
| 340 | unknown = 0x00, |
| 341 | tmc1800 = 0x01, |
| 342 | tmc18c50 = 0x02, |
| 343 | tmc18c30 = 0x03, |
| 344 | }; |
| 345 | |
| 346 | enum { |
| 347 | in_arbitration = 0x02, |
| 348 | in_selection = 0x04, |
| 349 | in_other = 0x08, |
| 350 | disconnect = 0x10, |
| 351 | aborted = 0x20, |
| 352 | sent_ident = 0x40, |
| 353 | }; |
| 354 | |
| 355 | enum in_port_type { |
| 356 | Read_SCSI_Data = 0, |
| 357 | SCSI_Status = 1, |
| 358 | TMC_Status = 2, |
| 359 | FIFO_Status = 3, /* tmc18c50/tmc18c30 only */ |
| 360 | Interrupt_Cond = 4, /* tmc18c50/tmc18c30 only */ |
| 361 | LSB_ID_Code = 5, |
| 362 | MSB_ID_Code = 6, |
| 363 | Read_Loopback = 7, |
| 364 | SCSI_Data_NoACK = 8, |
| 365 | Interrupt_Status = 9, |
| 366 | Configuration1 = 10, |
| 367 | Configuration2 = 11, /* tmc18c50/tmc18c30 only */ |
| 368 | Read_FIFO = 12, |
| 369 | FIFO_Data_Count = 14 |
| 370 | }; |
| 371 | |
| 372 | enum out_port_type { |
| 373 | Write_SCSI_Data = 0, |
| 374 | SCSI_Cntl = 1, |
| 375 | Interrupt_Cntl = 2, |
| 376 | SCSI_Mode_Cntl = 3, |
| 377 | TMC_Cntl = 4, |
| 378 | Memory_Cntl = 5, /* tmc18c50/tmc18c30 only */ |
| 379 | Write_Loopback = 7, |
| 380 | IO_Control = 11, /* tmc18c30 only */ |
| 381 | Write_FIFO = 12 |
| 382 | }; |
| 383 | |
| 384 | /* .bss will zero all the static variables below */ |
| 385 | static int port_base; |
| 386 | static unsigned long bios_base; |
| 387 | static void __iomem * bios_mem; |
| 388 | static int bios_major; |
| 389 | static int bios_minor; |
| 390 | static int PCI_bus; |
| 391 | static int Quantum; /* Quantum board variant */ |
| 392 | static int interrupt_level; |
| 393 | static volatile int in_command; |
| 394 | static struct scsi_cmnd *current_SC; |
| 395 | static enum chip_type chip = unknown; |
| 396 | static int adapter_mask; |
| 397 | static int this_id; |
| 398 | static int setup_called; |
| 399 | |
| 400 | #if DEBUG_RACE |
| 401 | static volatile int in_interrupt_flag; |
| 402 | #endif |
| 403 | |
| 404 | static int FIFO_Size = 0x2000; /* 8k FIFO for |
| 405 | pre-tmc18c30 chips */ |
| 406 | |
| 407 | static irqreturn_t do_fdomain_16x0_intr( int irq, void *dev_id, |
| 408 | struct pt_regs * regs ); |
| 409 | /* Allow insmod parameters to be like LILO parameters. For example: |
| 410 | insmod fdomain fdomain=0x140,11 */ |
| 411 | static char * fdomain = NULL; |
| 412 | module_param(fdomain, charp, 0); |
| 413 | |
| 414 | static unsigned long addresses[] = { |
| 415 | 0xc8000, |
| 416 | 0xca000, |
| 417 | 0xce000, |
| 418 | 0xde000, |
| 419 | 0xcc000, /* Extra addresses for PCI boards */ |
| 420 | 0xd0000, |
| 421 | 0xe0000, |
| 422 | }; |
| 423 | #define ADDRESS_COUNT (sizeof( addresses ) / sizeof( unsigned )) |
| 424 | |
| 425 | static unsigned short ports[] = { 0x140, 0x150, 0x160, 0x170 }; |
| 426 | #define PORT_COUNT (sizeof( ports ) / sizeof( unsigned short )) |
| 427 | |
| 428 | static unsigned short ints[] = { 3, 5, 10, 11, 12, 14, 15, 0 }; |
| 429 | |
| 430 | /* |
| 431 | |
| 432 | READ THIS BEFORE YOU ADD A SIGNATURE! |
| 433 | |
| 434 | READING THIS SHORT NOTE CAN SAVE YOU LOTS OF TIME! |
| 435 | |
| 436 | READ EVERY WORD, ESPECIALLY THE WORD *NOT* |
| 437 | |
| 438 | This driver works *ONLY* for Future Domain cards using the TMC-1800, |
| 439 | TMC-18C50, or TMC-18C30 chip. This includes models TMC-1650, 1660, 1670, |
| 440 | and 1680. These are all 16-bit cards. |
| 441 | |
| 442 | The following BIOS signature signatures are for boards which do *NOT* |
| 443 | work with this driver (these TMC-8xx and TMC-9xx boards may work with the |
| 444 | Seagate driver): |
| 445 | |
| 446 | FUTURE DOMAIN CORP. (C) 1986-1988 V4.0I 03/16/88 |
| 447 | FUTURE DOMAIN CORP. (C) 1986-1989 V5.0C2/14/89 |
| 448 | FUTURE DOMAIN CORP. (C) 1986-1989 V6.0A7/28/89 |
| 449 | FUTURE DOMAIN CORP. (C) 1986-1990 V6.0105/31/90 |
| 450 | FUTURE DOMAIN CORP. (C) 1986-1990 V6.0209/18/90 |
| 451 | FUTURE DOMAIN CORP. (C) 1986-1990 V7.009/18/90 |
| 452 | FUTURE DOMAIN CORP. (C) 1992 V8.00.004/02/92 |
| 453 | |
| 454 | (The cards which do *NOT* work are all 8-bit cards -- although some of |
| 455 | them have a 16-bit form-factor, the upper 8-bits are used only for IRQs |
| 456 | and are *NOT* used for data. You can tell the difference by following |
| 457 | the tracings on the circuit board -- if only the IRQ lines are involved, |
| 458 | you have a "8-bit" card, and should *NOT* use this driver.) |
| 459 | |
| 460 | */ |
| 461 | |
| 462 | static struct signature { |
| 463 | const char *signature; |
| 464 | int sig_offset; |
| 465 | int sig_length; |
| 466 | int major_bios_version; |
| 467 | int minor_bios_version; |
| 468 | int flag; /* 1 == PCI_bus, 2 == ISA_200S, 3 == ISA_250MG, 4 == ISA_200S */ |
| 469 | } signatures[] = { |
| 470 | /* 1 2 3 4 5 6 */ |
| 471 | /* 123456789012345678901234567890123456789012345678901234567890 */ |
| 472 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 5, 50, 2, 0, 0 }, |
| 473 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V1.07/28/89", 5, 50, 2, 0, 0 }, |
| 474 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.07/28/89", 72, 50, 2, 0, 2 }, |
| 475 | { "FUTURE DOMAIN CORP. (C) 1986-1990 1800-V2.0", 73, 43, 2, 0, 3 }, |
| 476 | { "FUTURE DOMAIN CORP. (C) 1991 1800-V2.0.", 72, 39, 2, 0, 4 }, |
| 477 | { "FUTURE DOMAIN CORP. (C) 1992 V3.00.004/02/92", 5, 44, 3, 0, 0 }, |
| 478 | { "FUTURE DOMAIN TMC-18XX (C) 1993 V3.203/12/93", 5, 44, 3, 2, 0 }, |
| 479 | { "IBM F1 P2 BIOS v1.0104/29/93", 5, 28, 3, -1, 0 }, |
| 480 | { "Future Domain Corp. V1.0008/18/93", 5, 33, 3, 4, 0 }, |
| 481 | { "Future Domain Corp. V1.0008/18/93", 26, 33, 3, 4, 1 }, |
| 482 | { "Adaptec AHA-2920 PCI-SCSI Card", 42, 31, 3, -1, 1 }, |
| 483 | { "IBM F1 P264/32", 5, 14, 3, -1, 1 }, |
| 484 | /* This next signature may not be a 3.5 bios */ |
| 485 | { "Future Domain Corp. V2.0108/18/93", 5, 33, 3, 5, 0 }, |
| 486 | { "FUTURE DOMAIN CORP. V3.5008/18/93", 5, 34, 3, 5, 0 }, |
| 487 | { "FUTURE DOMAIN 18c30/18c50/1800 (C) 1994 V3.5", 5, 44, 3, 5, 0 }, |
| 488 | { "FUTURE DOMAIN CORP. V3.6008/18/93", 5, 34, 3, 6, 0 }, |
| 489 | { "FUTURE DOMAIN CORP. V3.6108/18/93", 5, 34, 3, 6, 0 }, |
| 490 | { "FUTURE DOMAIN TMC-18XX", 5, 22, -1, -1, 0 }, |
| 491 | |
| 492 | /* READ NOTICE ABOVE *BEFORE* YOU WASTE YOUR TIME ADDING A SIGNATURE |
| 493 | Also, fix the disk geometry code for your signature and send your |
| 494 | changes for faith@cs.unc.edu. Above all, do *NOT* change any old |
| 495 | signatures! |
| 496 | |
| 497 | Note that the last line will match a "generic" 18XX bios. Because |
| 498 | Future Domain has changed the host SCSI ID and/or the location of the |
| 499 | geometry information in the on-board RAM area for each of the first |
| 500 | three BIOS's, it is still important to enter a fully qualified |
| 501 | signature in the table for any new BIOS's (after the host SCSI ID and |
| 502 | geometry location are verified). */ |
| 503 | }; |
| 504 | |
| 505 | #define SIGNATURE_COUNT (sizeof( signatures ) / sizeof( struct signature )) |
| 506 | |
| 507 | static void print_banner( struct Scsi_Host *shpnt ) |
| 508 | { |
| 509 | if (!shpnt) return; /* This won't ever happen */ |
| 510 | |
| 511 | if (bios_major < 0 && bios_minor < 0) { |
| 512 | printk(KERN_INFO "scsi%d: <fdomain> No BIOS; using scsi id %d\n", |
| 513 | shpnt->host_no, shpnt->this_id); |
| 514 | } else { |
| 515 | printk(KERN_INFO "scsi%d: <fdomain> BIOS version ", shpnt->host_no); |
| 516 | |
| 517 | if (bios_major >= 0) printk("%d.", bios_major); |
| 518 | else printk("?."); |
| 519 | |
| 520 | if (bios_minor >= 0) printk("%d", bios_minor); |
| 521 | else printk("?."); |
| 522 | |
| 523 | printk( " at 0x%lx using scsi id %d\n", |
| 524 | bios_base, shpnt->this_id ); |
| 525 | } |
| 526 | |
| 527 | /* If this driver works for later FD PCI |
| 528 | boards, we will have to modify banner |
| 529 | for additional PCI cards, but for now if |
| 530 | it's PCI it's a TMC-3260 - JTM */ |
| 531 | printk(KERN_INFO "scsi%d: <fdomain> %s chip at 0x%x irq ", |
| 532 | shpnt->host_no, |
| 533 | chip == tmc1800 ? "TMC-1800" : (chip == tmc18c50 ? "TMC-18C50" : (chip == tmc18c30 ? (PCI_bus ? "TMC-36C70 (PCI bus)" : "TMC-18C30") : "Unknown")), |
| 534 | port_base); |
| 535 | |
| 536 | if (interrupt_level) |
| 537 | printk("%d", interrupt_level); |
| 538 | else |
| 539 | printk("<none>"); |
| 540 | |
| 541 | printk( "\n" ); |
| 542 | } |
| 543 | |
| 544 | int fdomain_setup(char *str) |
| 545 | { |
| 546 | int ints[4]; |
| 547 | |
| 548 | (void)get_options(str, ARRAY_SIZE(ints), ints); |
| 549 | |
| 550 | if (setup_called++ || ints[0] < 2 || ints[0] > 3) { |
| 551 | printk(KERN_INFO "scsi: <fdomain> Usage: fdomain=<PORT_BASE>,<IRQ>[,<ADAPTER_ID>]\n"); |
| 552 | printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n"); |
| 553 | return 0; |
| 554 | } |
| 555 | |
| 556 | port_base = ints[0] >= 1 ? ints[1] : 0; |
| 557 | interrupt_level = ints[0] >= 2 ? ints[2] : 0; |
| 558 | this_id = ints[0] >= 3 ? ints[3] : 0; |
| 559 | |
| 560 | bios_major = bios_minor = -1; /* Use geometry for BIOS version >= 3.4 */ |
| 561 | ++setup_called; |
| 562 | return 1; |
| 563 | } |
| 564 | |
| 565 | __setup("fdomain=", fdomain_setup); |
| 566 | |
| 567 | |
| 568 | static void do_pause(unsigned amount) /* Pause for amount*10 milliseconds */ |
| 569 | { |
| 570 | mdelay(10*amount); |
| 571 | } |
| 572 | |
Jesper Juhl | 77933d7 | 2005-07-27 11:46:09 -0700 | [diff] [blame] | 573 | static inline void fdomain_make_bus_idle( void ) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 574 | { |
| 575 | outb(0, port_base + SCSI_Cntl); |
| 576 | outb(0, port_base + SCSI_Mode_Cntl); |
| 577 | if (chip == tmc18c50 || chip == tmc18c30) |
| 578 | outb(0x21 | PARITY_MASK, port_base + TMC_Cntl); /* Clear forced intr. */ |
| 579 | else |
| 580 | outb(0x01 | PARITY_MASK, port_base + TMC_Cntl); |
| 581 | } |
| 582 | |
| 583 | static int fdomain_is_valid_port( int port ) |
| 584 | { |
| 585 | #if DEBUG_DETECT |
| 586 | printk( " (%x%x),", |
| 587 | inb( port + MSB_ID_Code ), inb( port + LSB_ID_Code ) ); |
| 588 | #endif |
| 589 | |
| 590 | /* The MCA ID is a unique id for each MCA compatible board. We |
| 591 | are using ISA boards, but Future Domain provides the MCA ID |
| 592 | anyway. We can use this ID to ensure that this is a Future |
| 593 | Domain TMC-1660/TMC-1680. |
| 594 | */ |
| 595 | |
| 596 | if (inb( port + LSB_ID_Code ) != 0xe9) { /* test for 0x6127 id */ |
| 597 | if (inb( port + LSB_ID_Code ) != 0x27) return 0; |
| 598 | if (inb( port + MSB_ID_Code ) != 0x61) return 0; |
| 599 | chip = tmc1800; |
| 600 | } else { /* test for 0xe960 id */ |
| 601 | if (inb( port + MSB_ID_Code ) != 0x60) return 0; |
| 602 | chip = tmc18c50; |
| 603 | |
| 604 | /* Try to toggle 32-bit mode. This only |
| 605 | works on an 18c30 chip. (User reports |
| 606 | say this works, so we should switch to |
| 607 | it in the near future.) */ |
| 608 | |
| 609 | outb( 0x80, port + IO_Control ); |
| 610 | if ((inb( port + Configuration2 ) & 0x80) == 0x80) { |
| 611 | outb( 0x00, port + IO_Control ); |
| 612 | if ((inb( port + Configuration2 ) & 0x80) == 0x00) { |
| 613 | chip = tmc18c30; |
| 614 | FIFO_Size = 0x800; /* 2k FIFO */ |
| 615 | } |
| 616 | } |
| 617 | /* If that failed, we are an 18c50. */ |
| 618 | } |
| 619 | |
| 620 | return 1; |
| 621 | } |
| 622 | |
| 623 | static int fdomain_test_loopback( void ) |
| 624 | { |
| 625 | int i; |
| 626 | int result; |
| 627 | |
| 628 | for (i = 0; i < 255; i++) { |
| 629 | outb( i, port_base + Write_Loopback ); |
| 630 | result = inb( port_base + Read_Loopback ); |
| 631 | if (i != result) |
| 632 | return 1; |
| 633 | } |
| 634 | return 0; |
| 635 | } |
| 636 | |
| 637 | /* fdomain_get_irq assumes that we have a valid MCA ID for a |
| 638 | TMC-1660/TMC-1680 Future Domain board. Now, check to be sure the |
| 639 | bios_base matches these ports. If someone was unlucky enough to have |
| 640 | purchased more than one Future Domain board, then they will have to |
| 641 | modify this code, as we only detect one board here. [The one with the |
| 642 | lowest bios_base.] |
| 643 | |
| 644 | Note that this routine is only used for systems without a PCI BIOS32 |
| 645 | (e.g., ISA bus). For PCI bus systems, this routine will likely fail |
| 646 | unless one of the IRQs listed in the ints array is used by the board. |
| 647 | Sometimes it is possible to use the computer's BIOS setup screen to |
| 648 | configure a PCI system so that one of these IRQs will be used by the |
| 649 | Future Domain card. */ |
| 650 | |
| 651 | static int fdomain_get_irq( int base ) |
| 652 | { |
| 653 | int options = inb(base + Configuration1); |
| 654 | |
| 655 | #if DEBUG_DETECT |
| 656 | printk("scsi: <fdomain> Options = %x\n", options); |
| 657 | #endif |
| 658 | |
| 659 | /* Check for board with lowest bios_base -- |
| 660 | this isn't valid for the 18c30 or for |
| 661 | boards on the PCI bus, so just assume we |
| 662 | have the right board. */ |
| 663 | |
| 664 | if (chip != tmc18c30 && !PCI_bus && addresses[(options & 0xc0) >> 6 ] != bios_base) |
| 665 | return 0; |
| 666 | return ints[(options & 0x0e) >> 1]; |
| 667 | } |
| 668 | |
| 669 | static int fdomain_isa_detect( int *irq, int *iobase ) |
| 670 | { |
| 671 | #ifndef PCMCIA |
| 672 | int i, j; |
| 673 | int base = 0xdeadbeef; |
| 674 | int flag = 0; |
| 675 | |
| 676 | #if DEBUG_DETECT |
| 677 | printk( "scsi: <fdomain> fdomain_isa_detect:" ); |
| 678 | #endif |
| 679 | |
| 680 | for (i = 0; i < ADDRESS_COUNT; i++) { |
| 681 | void __iomem *p = ioremap(addresses[i], 0x2000); |
| 682 | if (!p) |
| 683 | continue; |
| 684 | #if DEBUG_DETECT |
| 685 | printk( " %lx(%lx),", addresses[i], bios_base ); |
| 686 | #endif |
| 687 | for (j = 0; j < SIGNATURE_COUNT; j++) { |
| 688 | if (check_signature(p + signatures[j].sig_offset, |
| 689 | signatures[j].signature, |
| 690 | signatures[j].sig_length )) { |
| 691 | bios_major = signatures[j].major_bios_version; |
| 692 | bios_minor = signatures[j].minor_bios_version; |
| 693 | PCI_bus = (signatures[j].flag == 1); |
| 694 | Quantum = (signatures[j].flag > 1) ? signatures[j].flag : 0; |
| 695 | bios_base = addresses[i]; |
| 696 | bios_mem = p; |
| 697 | goto found; |
| 698 | } |
| 699 | } |
| 700 | iounmap(p); |
| 701 | } |
| 702 | |
| 703 | found: |
| 704 | if (bios_major == 2) { |
| 705 | /* The TMC-1660/TMC-1680 has a RAM area just after the BIOS ROM. |
| 706 | Assuming the ROM is enabled (otherwise we wouldn't have been |
| 707 | able to read the ROM signature :-), then the ROM sets up the |
| 708 | RAM area with some magic numbers, such as a list of port |
| 709 | base addresses and a list of the disk "geometry" reported to |
| 710 | DOS (this geometry has nothing to do with physical geometry). |
| 711 | */ |
| 712 | |
| 713 | switch (Quantum) { |
| 714 | case 2: /* ISA_200S */ |
| 715 | case 3: /* ISA_250MG */ |
| 716 | base = readb(bios_mem + 0x1fa2) + (readb(bios_mem + 0x1fa3) << 8); |
| 717 | break; |
| 718 | case 4: /* ISA_200S (another one) */ |
| 719 | base = readb(bios_mem + 0x1fa3) + (readb(bios_mem + 0x1fa4) << 8); |
| 720 | break; |
| 721 | default: |
| 722 | base = readb(bios_mem + 0x1fcc) + (readb(bios_mem + 0x1fcd) << 8); |
| 723 | break; |
| 724 | } |
| 725 | |
| 726 | #if DEBUG_DETECT |
| 727 | printk( " %x,", base ); |
| 728 | #endif |
| 729 | |
| 730 | for (i = 0; i < PORT_COUNT; i++) { |
| 731 | if (base == ports[i]) { |
| 732 | if (!request_region(base, 0x10, "fdomain")) |
| 733 | break; |
| 734 | if (!fdomain_is_valid_port(base)) { |
| 735 | release_region(base, 0x10); |
| 736 | break; |
| 737 | } |
| 738 | *irq = fdomain_get_irq( base ); |
| 739 | *iobase = base; |
| 740 | return 1; |
| 741 | } |
| 742 | } |
| 743 | |
| 744 | /* This is a bad sign. It usually means that someone patched the |
| 745 | BIOS signature list (the signatures variable) to contain a BIOS |
| 746 | signature for a board *OTHER THAN* the TMC-1660/TMC-1680. */ |
| 747 | |
| 748 | #if DEBUG_DETECT |
| 749 | printk( " RAM FAILED, " ); |
| 750 | #endif |
| 751 | } |
| 752 | |
| 753 | /* Anyway, the alternative to finding the address in the RAM is to just |
| 754 | search through every possible port address for one that is attached |
| 755 | to the Future Domain card. Don't panic, though, about reading all |
| 756 | these random port addresses -- there are rumors that the Future |
| 757 | Domain BIOS does something very similar. |
| 758 | |
| 759 | Do not, however, check ports which the kernel knows are being used by |
| 760 | another driver. */ |
| 761 | |
| 762 | for (i = 0; i < PORT_COUNT; i++) { |
| 763 | base = ports[i]; |
| 764 | if (!request_region(base, 0x10, "fdomain")) { |
| 765 | #if DEBUG_DETECT |
| 766 | printk( " (%x inuse),", base ); |
| 767 | #endif |
| 768 | continue; |
| 769 | } |
| 770 | #if DEBUG_DETECT |
| 771 | printk( " %x,", base ); |
| 772 | #endif |
| 773 | flag = fdomain_is_valid_port(base); |
| 774 | if (flag) |
| 775 | break; |
| 776 | release_region(base, 0x10); |
| 777 | } |
| 778 | |
| 779 | #if DEBUG_DETECT |
| 780 | if (flag) printk( " SUCCESS\n" ); |
| 781 | else printk( " FAILURE\n" ); |
| 782 | #endif |
| 783 | |
| 784 | if (!flag) return 0; /* iobase not found */ |
| 785 | |
| 786 | *irq = fdomain_get_irq( base ); |
| 787 | *iobase = base; |
| 788 | |
| 789 | return 1; /* success */ |
| 790 | #else |
| 791 | return 0; |
| 792 | #endif |
| 793 | } |
| 794 | |
| 795 | /* PCI detection function: int fdomain_pci_bios_detect(int* irq, int* |
| 796 | iobase) This function gets the Interrupt Level and I/O base address from |
| 797 | the PCI configuration registers. */ |
| 798 | |
| 799 | #ifdef CONFIG_PCI |
| 800 | static int fdomain_pci_bios_detect( int *irq, int *iobase, struct pci_dev **ret_pdev ) |
| 801 | { |
| 802 | unsigned int pci_irq; /* PCI interrupt line */ |
| 803 | unsigned long pci_base; /* PCI I/O base address */ |
| 804 | struct pci_dev *pdev = NULL; |
| 805 | |
| 806 | #if DEBUG_DETECT |
| 807 | /* Tell how to print a list of the known PCI devices from bios32 and |
| 808 | list vendor and device IDs being used if in debug mode. */ |
| 809 | |
| 810 | printk( "scsi: <fdomain> INFO: use lspci -v to see list of PCI devices\n" ); |
| 811 | printk( "scsi: <fdomain> TMC-3260 detect:" |
| 812 | " Using Vendor ID: 0x%x and Device ID: 0x%x\n", |
| 813 | PCI_VENDOR_ID_FD, |
| 814 | PCI_DEVICE_ID_FD_36C70 ); |
| 815 | #endif |
| 816 | |
| 817 | if ((pdev = pci_find_device(PCI_VENDOR_ID_FD, PCI_DEVICE_ID_FD_36C70, pdev)) == NULL) |
| 818 | return 0; |
| 819 | if (pci_enable_device(pdev)) return 0; |
| 820 | |
| 821 | #if DEBUG_DETECT |
| 822 | printk( "scsi: <fdomain> TMC-3260 detect:" |
| 823 | " PCI bus %u, device %u, function %u\n", |
| 824 | pdev->bus->number, |
| 825 | PCI_SLOT(pdev->devfn), |
| 826 | PCI_FUNC(pdev->devfn)); |
| 827 | #endif |
| 828 | |
| 829 | /* We now have the appropriate device function for the FD board so we |
| 830 | just read the PCI config info from the registers. */ |
| 831 | |
| 832 | pci_base = pci_resource_start(pdev, 0); |
| 833 | pci_irq = pdev->irq; |
| 834 | |
| 835 | if (!request_region( pci_base, 0x10, "fdomain" )) |
| 836 | return 0; |
| 837 | |
| 838 | /* Now we have the I/O base address and interrupt from the PCI |
| 839 | configuration registers. */ |
| 840 | |
| 841 | *irq = pci_irq; |
| 842 | *iobase = pci_base; |
| 843 | *ret_pdev = pdev; |
| 844 | |
| 845 | #if DEBUG_DETECT |
| 846 | printk( "scsi: <fdomain> TMC-3260 detect:" |
| 847 | " IRQ = %d, I/O base = 0x%x [0x%lx]\n", *irq, *iobase, pci_base ); |
| 848 | #endif |
| 849 | |
| 850 | if (!fdomain_is_valid_port(pci_base)) { |
| 851 | printk(KERN_ERR "scsi: <fdomain> PCI card detected, but driver not loaded (invalid port)\n" ); |
| 852 | release_region(pci_base, 0x10); |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | /* Fill in a few global variables. Ugh. */ |
| 857 | bios_major = bios_minor = -1; |
| 858 | PCI_bus = 1; |
| 859 | Quantum = 0; |
| 860 | bios_base = 0; |
| 861 | |
| 862 | return 1; |
| 863 | } |
| 864 | #endif |
| 865 | |
| 866 | struct Scsi_Host *__fdomain_16x0_detect(struct scsi_host_template *tpnt ) |
| 867 | { |
| 868 | int retcode; |
| 869 | struct Scsi_Host *shpnt; |
| 870 | struct pci_dev *pdev = NULL; |
| 871 | |
| 872 | if (setup_called) { |
| 873 | #if DEBUG_DETECT |
| 874 | printk( "scsi: <fdomain> No BIOS, using port_base = 0x%x, irq = %d\n", |
| 875 | port_base, interrupt_level ); |
| 876 | #endif |
| 877 | if (!request_region(port_base, 0x10, "fdomain")) { |
| 878 | printk( "scsi: <fdomain> port 0x%x is busy\n", port_base ); |
| 879 | printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); |
| 880 | return NULL; |
| 881 | } |
| 882 | if (!fdomain_is_valid_port( port_base )) { |
| 883 | printk( "scsi: <fdomain> Cannot locate chip at port base 0x%x\n", |
| 884 | port_base ); |
| 885 | printk( "scsi: <fdomain> Bad LILO/INSMOD parameters?\n" ); |
| 886 | release_region(port_base, 0x10); |
| 887 | return NULL; |
| 888 | } |
| 889 | } else { |
| 890 | int flag = 0; |
| 891 | |
| 892 | #ifdef CONFIG_PCI |
| 893 | /* Try PCI detection first */ |
| 894 | flag = fdomain_pci_bios_detect( &interrupt_level, &port_base, &pdev ); |
| 895 | #endif |
| 896 | if (!flag) { |
| 897 | /* Then try ISA bus detection */ |
| 898 | flag = fdomain_isa_detect( &interrupt_level, &port_base ); |
| 899 | |
| 900 | if (!flag) { |
| 901 | printk( "scsi: <fdomain> Detection failed (no card)\n" ); |
| 902 | return NULL; |
| 903 | } |
| 904 | } |
| 905 | } |
| 906 | |
| 907 | fdomain_16x0_bus_reset(NULL); |
| 908 | |
| 909 | if (fdomain_test_loopback()) { |
| 910 | printk(KERN_ERR "scsi: <fdomain> Detection failed (loopback test failed at port base 0x%x)\n", port_base); |
| 911 | if (setup_called) { |
| 912 | printk(KERN_ERR "scsi: <fdomain> Bad LILO/INSMOD parameters?\n"); |
| 913 | } |
| 914 | release_region(port_base, 0x10); |
| 915 | return NULL; |
| 916 | } |
| 917 | |
| 918 | if (this_id) { |
| 919 | tpnt->this_id = (this_id & 0x07); |
| 920 | adapter_mask = (1 << tpnt->this_id); |
| 921 | } else { |
| 922 | if (PCI_bus || (bios_major == 3 && bios_minor >= 2) || bios_major < 0) { |
| 923 | tpnt->this_id = 7; |
| 924 | adapter_mask = 0x80; |
| 925 | } else { |
| 926 | tpnt->this_id = 6; |
| 927 | adapter_mask = 0x40; |
| 928 | } |
| 929 | } |
| 930 | |
| 931 | /* Print out a banner here in case we can't |
| 932 | get resources. */ |
| 933 | |
| 934 | shpnt = scsi_register( tpnt, 0 ); |
| 935 | if(shpnt == NULL) { |
| 936 | release_region(port_base, 0x10); |
| 937 | return NULL; |
| 938 | } |
| 939 | shpnt->irq = interrupt_level; |
| 940 | shpnt->io_port = port_base; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 941 | shpnt->n_io_port = 0x10; |
| 942 | print_banner( shpnt ); |
| 943 | |
| 944 | /* Log IRQ with kernel */ |
| 945 | if (!interrupt_level) { |
| 946 | printk(KERN_ERR "scsi: <fdomain> Card Detected, but driver not loaded (no IRQ)\n" ); |
| 947 | release_region(port_base, 0x10); |
| 948 | return NULL; |
| 949 | } else { |
| 950 | /* Register the IRQ with the kernel */ |
| 951 | |
| 952 | retcode = request_irq( interrupt_level, |
| 953 | do_fdomain_16x0_intr, pdev?SA_SHIRQ:0, "fdomain", shpnt); |
| 954 | |
| 955 | if (retcode < 0) { |
| 956 | if (retcode == -EINVAL) { |
| 957 | printk(KERN_ERR "scsi: <fdomain> IRQ %d is bad!\n", interrupt_level ); |
| 958 | printk(KERN_ERR " This shouldn't happen!\n" ); |
| 959 | printk(KERN_ERR " Send mail to faith@acm.org\n" ); |
| 960 | } else if (retcode == -EBUSY) { |
| 961 | printk(KERN_ERR "scsi: <fdomain> IRQ %d is already in use!\n", interrupt_level ); |
| 962 | printk(KERN_ERR " Please use another IRQ!\n" ); |
| 963 | } else { |
| 964 | printk(KERN_ERR "scsi: <fdomain> Error getting IRQ %d\n", interrupt_level ); |
| 965 | printk(KERN_ERR " This shouldn't happen!\n" ); |
| 966 | printk(KERN_ERR " Send mail to faith@acm.org\n" ); |
| 967 | } |
| 968 | printk(KERN_ERR "scsi: <fdomain> Detected, but driver not loaded (IRQ)\n" ); |
| 969 | release_region(port_base, 0x10); |
| 970 | return NULL; |
| 971 | } |
| 972 | } |
| 973 | return shpnt; |
| 974 | } |
| 975 | |
| 976 | static int fdomain_16x0_detect(struct scsi_host_template *tpnt) |
| 977 | { |
| 978 | if (fdomain) |
| 979 | fdomain_setup(fdomain); |
| 980 | return (__fdomain_16x0_detect(tpnt) != NULL); |
| 981 | } |
| 982 | |
| 983 | static const char *fdomain_16x0_info( struct Scsi_Host *ignore ) |
| 984 | { |
| 985 | static char buffer[128]; |
| 986 | char *pt; |
| 987 | |
| 988 | strcpy( buffer, "Future Domain 16-bit SCSI Driver Version" ); |
| 989 | if (strchr( VERSION, ':')) { /* Assume VERSION is an RCS Revision string */ |
| 990 | strcat( buffer, strchr( VERSION, ':' ) + 1 ); |
| 991 | pt = strrchr( buffer, '$') - 1; |
| 992 | if (!pt) /* Stripped RCS Revision string? */ |
| 993 | pt = buffer + strlen( buffer ) - 1; |
| 994 | if (*pt != ' ') |
| 995 | ++pt; |
| 996 | *pt = '\0'; |
| 997 | } else { /* Assume VERSION is a number */ |
| 998 | strcat( buffer, " " VERSION ); |
| 999 | } |
| 1000 | |
| 1001 | return buffer; |
| 1002 | } |
| 1003 | |
| 1004 | #if 0 |
| 1005 | static int fdomain_arbitrate( void ) |
| 1006 | { |
| 1007 | int status = 0; |
| 1008 | unsigned long timeout; |
| 1009 | |
| 1010 | #if EVERY_ACCESS |
| 1011 | printk( "fdomain_arbitrate()\n" ); |
| 1012 | #endif |
| 1013 | |
| 1014 | outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */ |
| 1015 | outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */ |
| 1016 | outb(0x04 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */ |
| 1017 | |
| 1018 | timeout = 500; |
| 1019 | do { |
| 1020 | status = inb(port_base + TMC_Status); /* Read adapter status */ |
| 1021 | if (status & 0x02) /* Arbitration complete */ |
| 1022 | return 0; |
| 1023 | mdelay(1); /* Wait one millisecond */ |
| 1024 | } while (--timeout); |
| 1025 | |
| 1026 | /* Make bus idle */ |
| 1027 | fdomain_make_bus_idle(); |
| 1028 | |
| 1029 | #if EVERY_ACCESS |
| 1030 | printk( "Arbitration failed, status = %x\n", status ); |
| 1031 | #endif |
| 1032 | #if ERRORS_ONLY |
| 1033 | printk( "scsi: <fdomain> Arbitration failed, status = %x\n", status ); |
| 1034 | #endif |
| 1035 | return 1; |
| 1036 | } |
| 1037 | #endif |
| 1038 | |
| 1039 | static int fdomain_select( int target ) |
| 1040 | { |
| 1041 | int status; |
| 1042 | unsigned long timeout; |
| 1043 | #if ERRORS_ONLY |
| 1044 | static int flag = 0; |
| 1045 | #endif |
| 1046 | |
| 1047 | outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */ |
| 1048 | outb(adapter_mask | (1 << target), port_base + SCSI_Data_NoACK); |
| 1049 | |
| 1050 | /* Stop arbitration and enable parity */ |
| 1051 | outb(PARITY_MASK, port_base + TMC_Cntl); |
| 1052 | |
| 1053 | timeout = 350; /* 350 msec */ |
| 1054 | |
| 1055 | do { |
| 1056 | status = inb(port_base + SCSI_Status); /* Read adapter status */ |
| 1057 | if (status & 1) { /* Busy asserted */ |
| 1058 | /* Enable SCSI Bus (on error, should make bus idle with 0) */ |
| 1059 | outb(0x80, port_base + SCSI_Cntl); |
| 1060 | return 0; |
| 1061 | } |
| 1062 | mdelay(1); /* wait one msec */ |
| 1063 | } while (--timeout); |
| 1064 | /* Make bus idle */ |
| 1065 | fdomain_make_bus_idle(); |
| 1066 | #if EVERY_ACCESS |
| 1067 | if (!target) printk( "Selection failed\n" ); |
| 1068 | #endif |
| 1069 | #if ERRORS_ONLY |
| 1070 | if (!target) { |
| 1071 | if (!flag) /* Skip first failure for all chips. */ |
| 1072 | ++flag; |
| 1073 | else |
| 1074 | printk( "scsi: <fdomain> Selection failed\n" ); |
| 1075 | } |
| 1076 | #endif |
| 1077 | return 1; |
| 1078 | } |
| 1079 | |
| 1080 | static void my_done(int error) |
| 1081 | { |
| 1082 | if (in_command) { |
| 1083 | in_command = 0; |
| 1084 | outb(0x00, port_base + Interrupt_Cntl); |
| 1085 | fdomain_make_bus_idle(); |
| 1086 | current_SC->result = error; |
| 1087 | if (current_SC->scsi_done) |
| 1088 | current_SC->scsi_done( current_SC ); |
| 1089 | else panic( "scsi: <fdomain> current_SC->scsi_done() == NULL" ); |
| 1090 | } else { |
| 1091 | panic( "scsi: <fdomain> my_done() called outside of command\n" ); |
| 1092 | } |
| 1093 | #if DEBUG_RACE |
| 1094 | in_interrupt_flag = 0; |
| 1095 | #endif |
| 1096 | } |
| 1097 | |
| 1098 | static irqreturn_t do_fdomain_16x0_intr(int irq, void *dev_id, |
| 1099 | struct pt_regs * regs ) |
| 1100 | { |
| 1101 | unsigned long flags; |
| 1102 | int status; |
| 1103 | int done = 0; |
| 1104 | unsigned data_count; |
| 1105 | |
| 1106 | /* The fdomain_16x0_intr is only called via |
| 1107 | the interrupt handler. The goal of the |
| 1108 | sti() here is to allow other |
| 1109 | interruptions while this routine is |
| 1110 | running. */ |
| 1111 | |
| 1112 | /* Check for other IRQ sources */ |
| 1113 | if ((inb(port_base + TMC_Status) & 0x01) == 0) |
| 1114 | return IRQ_NONE; |
| 1115 | |
| 1116 | /* It is our IRQ */ |
| 1117 | outb(0x00, port_base + Interrupt_Cntl); |
| 1118 | |
| 1119 | /* We usually have one spurious interrupt after each command. Ignore it. */ |
| 1120 | if (!in_command || !current_SC) { /* Spurious interrupt */ |
| 1121 | #if EVERY_ACCESS |
| 1122 | printk( "Spurious interrupt, in_command = %d, current_SC = %x\n", |
| 1123 | in_command, current_SC ); |
| 1124 | #endif |
| 1125 | return IRQ_NONE; |
| 1126 | } |
| 1127 | |
| 1128 | /* Abort calls my_done, so we do nothing here. */ |
| 1129 | if (current_SC->SCp.phase & aborted) { |
| 1130 | #if DEBUG_ABORT |
| 1131 | printk( "scsi: <fdomain> Interrupt after abort, ignoring\n" ); |
| 1132 | #endif |
| 1133 | /* |
| 1134 | return IRQ_HANDLED; */ |
| 1135 | } |
| 1136 | |
| 1137 | #if DEBUG_RACE |
| 1138 | ++in_interrupt_flag; |
| 1139 | #endif |
| 1140 | |
| 1141 | if (current_SC->SCp.phase & in_arbitration) { |
| 1142 | status = inb(port_base + TMC_Status); /* Read adapter status */ |
| 1143 | if (!(status & 0x02)) { |
| 1144 | #if EVERY_ACCESS |
| 1145 | printk( " AFAIL " ); |
| 1146 | #endif |
| 1147 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
| 1148 | my_done( DID_BUS_BUSY << 16 ); |
| 1149 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
| 1150 | return IRQ_HANDLED; |
| 1151 | } |
| 1152 | current_SC->SCp.phase = in_selection; |
| 1153 | |
| 1154 | outb(0x40 | FIFO_COUNT, port_base + Interrupt_Cntl); |
| 1155 | |
| 1156 | outb(0x82, port_base + SCSI_Cntl); /* Bus Enable + Select */ |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 1157 | outb(adapter_mask | (1 << scmd_id(current_SC)), port_base + SCSI_Data_NoACK); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1158 | |
| 1159 | /* Stop arbitration and enable parity */ |
| 1160 | outb(0x10 | PARITY_MASK, port_base + TMC_Cntl); |
| 1161 | #if DEBUG_RACE |
| 1162 | in_interrupt_flag = 0; |
| 1163 | #endif |
| 1164 | return IRQ_HANDLED; |
| 1165 | } else if (current_SC->SCp.phase & in_selection) { |
| 1166 | status = inb(port_base + SCSI_Status); |
| 1167 | if (!(status & 0x01)) { |
| 1168 | /* Try again, for slow devices */ |
Jeff Garzik | 422c0d6 | 2005-10-24 18:05:09 -0400 | [diff] [blame] | 1169 | if (fdomain_select( scmd_id(current_SC) )) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1170 | #if EVERY_ACCESS |
| 1171 | printk( " SFAIL " ); |
| 1172 | #endif |
| 1173 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
| 1174 | my_done( DID_NO_CONNECT << 16 ); |
| 1175 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
| 1176 | return IRQ_HANDLED; |
| 1177 | } else { |
| 1178 | #if EVERY_ACCESS |
| 1179 | printk( " AltSel " ); |
| 1180 | #endif |
| 1181 | /* Stop arbitration and enable parity */ |
| 1182 | outb(0x10 | PARITY_MASK, port_base + TMC_Cntl); |
| 1183 | } |
| 1184 | } |
| 1185 | current_SC->SCp.phase = in_other; |
| 1186 | outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl); |
| 1187 | outb(0x80, port_base + SCSI_Cntl); |
| 1188 | #if DEBUG_RACE |
| 1189 | in_interrupt_flag = 0; |
| 1190 | #endif |
| 1191 | return IRQ_HANDLED; |
| 1192 | } |
| 1193 | |
| 1194 | /* current_SC->SCp.phase == in_other: this is the body of the routine */ |
| 1195 | |
| 1196 | status = inb(port_base + SCSI_Status); |
| 1197 | |
| 1198 | if (status & 0x10) { /* REQ */ |
| 1199 | |
| 1200 | switch (status & 0x0e) { |
| 1201 | |
| 1202 | case 0x08: /* COMMAND OUT */ |
| 1203 | outb(current_SC->cmnd[current_SC->SCp.sent_command++], |
| 1204 | port_base + Write_SCSI_Data); |
| 1205 | #if EVERY_ACCESS |
| 1206 | printk( "CMD = %x,", |
| 1207 | current_SC->cmnd[ current_SC->SCp.sent_command - 1] ); |
| 1208 | #endif |
| 1209 | break; |
| 1210 | case 0x00: /* DATA OUT -- tmc18c50/tmc18c30 only */ |
| 1211 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { |
| 1212 | current_SC->SCp.have_data_in = -1; |
| 1213 | outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl); |
| 1214 | } |
| 1215 | break; |
| 1216 | case 0x04: /* DATA IN -- tmc18c50/tmc18c30 only */ |
| 1217 | if (chip != tmc1800 && !current_SC->SCp.have_data_in) { |
| 1218 | current_SC->SCp.have_data_in = 1; |
| 1219 | outb(0x90 | PARITY_MASK, port_base + TMC_Cntl); |
| 1220 | } |
| 1221 | break; |
| 1222 | case 0x0c: /* STATUS IN */ |
| 1223 | current_SC->SCp.Status = inb(port_base + Read_SCSI_Data); |
| 1224 | #if EVERY_ACCESS |
| 1225 | printk( "Status = %x, ", current_SC->SCp.Status ); |
| 1226 | #endif |
| 1227 | #if ERRORS_ONLY |
| 1228 | if (current_SC->SCp.Status |
| 1229 | && current_SC->SCp.Status != 2 |
| 1230 | && current_SC->SCp.Status != 8) { |
| 1231 | printk( "scsi: <fdomain> target = %d, command = %x, status = %x\n", |
| 1232 | current_SC->device->id, |
| 1233 | current_SC->cmnd[0], |
| 1234 | current_SC->SCp.Status ); |
| 1235 | } |
| 1236 | #endif |
| 1237 | break; |
| 1238 | case 0x0a: /* MESSAGE OUT */ |
| 1239 | outb(MESSAGE_REJECT, port_base + Write_SCSI_Data); /* Reject */ |
| 1240 | break; |
| 1241 | case 0x0e: /* MESSAGE IN */ |
| 1242 | current_SC->SCp.Message = inb(port_base + Read_SCSI_Data); |
| 1243 | #if EVERY_ACCESS |
| 1244 | printk( "Message = %x, ", current_SC->SCp.Message ); |
| 1245 | #endif |
| 1246 | if (!current_SC->SCp.Message) ++done; |
| 1247 | #if DEBUG_MESSAGES || EVERY_ACCESS |
| 1248 | if (current_SC->SCp.Message) { |
| 1249 | printk( "scsi: <fdomain> message = %x\n", |
| 1250 | current_SC->SCp.Message ); |
| 1251 | } |
| 1252 | #endif |
| 1253 | break; |
| 1254 | } |
| 1255 | } |
| 1256 | |
| 1257 | if (chip == tmc1800 && !current_SC->SCp.have_data_in |
| 1258 | && (current_SC->SCp.sent_command >= current_SC->cmd_len)) { |
| 1259 | |
| 1260 | if(current_SC->sc_data_direction == DMA_TO_DEVICE) |
| 1261 | { |
| 1262 | current_SC->SCp.have_data_in = -1; |
| 1263 | outb(0xd0 | PARITY_MASK, port_base + TMC_Cntl); |
| 1264 | } |
| 1265 | else |
| 1266 | { |
| 1267 | current_SC->SCp.have_data_in = 1; |
| 1268 | outb(0x90 | PARITY_MASK, port_base + TMC_Cntl); |
| 1269 | } |
| 1270 | } |
| 1271 | |
| 1272 | if (current_SC->SCp.have_data_in == -1) { /* DATA OUT */ |
| 1273 | while ((data_count = FIFO_Size - inw(port_base + FIFO_Data_Count)) > 512) { |
| 1274 | #if EVERY_ACCESS |
| 1275 | printk( "DC=%d, ", data_count ) ; |
| 1276 | #endif |
| 1277 | if (data_count > current_SC->SCp.this_residual) |
| 1278 | data_count = current_SC->SCp.this_residual; |
| 1279 | if (data_count > 0) { |
| 1280 | #if EVERY_ACCESS |
| 1281 | printk( "%d OUT, ", data_count ); |
| 1282 | #endif |
| 1283 | if (data_count == 1) { |
| 1284 | outb(*current_SC->SCp.ptr++, port_base + Write_FIFO); |
| 1285 | --current_SC->SCp.this_residual; |
| 1286 | } else { |
| 1287 | data_count >>= 1; |
| 1288 | outsw(port_base + Write_FIFO, current_SC->SCp.ptr, data_count); |
| 1289 | current_SC->SCp.ptr += 2 * data_count; |
| 1290 | current_SC->SCp.this_residual -= 2 * data_count; |
| 1291 | } |
| 1292 | } |
| 1293 | if (!current_SC->SCp.this_residual) { |
| 1294 | if (current_SC->SCp.buffers_residual) { |
| 1295 | --current_SC->SCp.buffers_residual; |
| 1296 | ++current_SC->SCp.buffer; |
| 1297 | current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset; |
| 1298 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
| 1299 | } else |
| 1300 | break; |
| 1301 | } |
| 1302 | } |
| 1303 | } |
| 1304 | |
| 1305 | if (current_SC->SCp.have_data_in == 1) { /* DATA IN */ |
| 1306 | while ((data_count = inw(port_base + FIFO_Data_Count)) > 0) { |
| 1307 | #if EVERY_ACCESS |
| 1308 | printk( "DC=%d, ", data_count ); |
| 1309 | #endif |
| 1310 | if (data_count > current_SC->SCp.this_residual) |
| 1311 | data_count = current_SC->SCp.this_residual; |
| 1312 | if (data_count) { |
| 1313 | #if EVERY_ACCESS |
| 1314 | printk( "%d IN, ", data_count ); |
| 1315 | #endif |
| 1316 | if (data_count == 1) { |
| 1317 | *current_SC->SCp.ptr++ = inb(port_base + Read_FIFO); |
| 1318 | --current_SC->SCp.this_residual; |
| 1319 | } else { |
| 1320 | data_count >>= 1; /* Number of words */ |
| 1321 | insw(port_base + Read_FIFO, current_SC->SCp.ptr, data_count); |
| 1322 | current_SC->SCp.ptr += 2 * data_count; |
| 1323 | current_SC->SCp.this_residual -= 2 * data_count; |
| 1324 | } |
| 1325 | } |
| 1326 | if (!current_SC->SCp.this_residual |
| 1327 | && current_SC->SCp.buffers_residual) { |
| 1328 | --current_SC->SCp.buffers_residual; |
| 1329 | ++current_SC->SCp.buffer; |
| 1330 | current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset; |
| 1331 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
| 1332 | } |
| 1333 | } |
| 1334 | } |
| 1335 | |
| 1336 | if (done) { |
| 1337 | #if EVERY_ACCESS |
| 1338 | printk( " ** IN DONE %d ** ", current_SC->SCp.have_data_in ); |
| 1339 | #endif |
| 1340 | |
| 1341 | #if ERRORS_ONLY |
| 1342 | if (current_SC->cmnd[0] == REQUEST_SENSE && !current_SC->SCp.Status) { |
| 1343 | if ((unsigned char)(*((char *)current_SC->request_buffer+2)) & 0x0f) { |
| 1344 | unsigned char key; |
| 1345 | unsigned char code; |
| 1346 | unsigned char qualifier; |
| 1347 | |
| 1348 | key = (unsigned char)(*((char *)current_SC->request_buffer + 2)) |
| 1349 | & 0x0f; |
| 1350 | code = (unsigned char)(*((char *)current_SC->request_buffer + 12)); |
| 1351 | qualifier = (unsigned char)(*((char *)current_SC->request_buffer |
| 1352 | + 13)); |
| 1353 | |
| 1354 | if (key != UNIT_ATTENTION |
| 1355 | && !(key == NOT_READY |
| 1356 | && code == 0x04 |
| 1357 | && (!qualifier || qualifier == 0x02 || qualifier == 0x01)) |
| 1358 | && !(key == ILLEGAL_REQUEST && (code == 0x25 |
| 1359 | || code == 0x24 |
| 1360 | || !code))) |
| 1361 | |
| 1362 | printk( "scsi: <fdomain> REQUEST SENSE" |
| 1363 | " Key = %x, Code = %x, Qualifier = %x\n", |
| 1364 | key, code, qualifier ); |
| 1365 | } |
| 1366 | } |
| 1367 | #endif |
| 1368 | #if EVERY_ACCESS |
| 1369 | printk( "BEFORE MY_DONE. . ." ); |
| 1370 | #endif |
| 1371 | spin_lock_irqsave(current_SC->device->host->host_lock, flags); |
| 1372 | my_done( (current_SC->SCp.Status & 0xff) |
| 1373 | | ((current_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16) ); |
| 1374 | spin_unlock_irqrestore(current_SC->device->host->host_lock, flags); |
| 1375 | #if EVERY_ACCESS |
| 1376 | printk( "RETURNING.\n" ); |
| 1377 | #endif |
| 1378 | |
| 1379 | } else { |
| 1380 | if (current_SC->SCp.phase & disconnect) { |
| 1381 | outb(0xd0 | FIFO_COUNT, port_base + Interrupt_Cntl); |
| 1382 | outb(0x00, port_base + SCSI_Cntl); |
| 1383 | } else { |
| 1384 | outb(0x90 | FIFO_COUNT, port_base + Interrupt_Cntl); |
| 1385 | } |
| 1386 | } |
| 1387 | #if DEBUG_RACE |
| 1388 | in_interrupt_flag = 0; |
| 1389 | #endif |
| 1390 | return IRQ_HANDLED; |
| 1391 | } |
| 1392 | |
| 1393 | static int fdomain_16x0_queue(struct scsi_cmnd *SCpnt, |
| 1394 | void (*done)(struct scsi_cmnd *)) |
| 1395 | { |
| 1396 | if (in_command) { |
| 1397 | panic( "scsi: <fdomain> fdomain_16x0_queue() NOT REENTRANT!\n" ); |
| 1398 | } |
| 1399 | #if EVERY_ACCESS |
| 1400 | printk( "queue: target = %d cmnd = 0x%02x pieces = %d size = %u\n", |
| 1401 | SCpnt->target, |
| 1402 | *(unsigned char *)SCpnt->cmnd, |
| 1403 | SCpnt->use_sg, |
| 1404 | SCpnt->request_bufflen ); |
| 1405 | #endif |
| 1406 | |
| 1407 | fdomain_make_bus_idle(); |
| 1408 | |
| 1409 | current_SC = SCpnt; /* Save this for the done function */ |
| 1410 | current_SC->scsi_done = done; |
| 1411 | |
| 1412 | /* Initialize static data */ |
| 1413 | |
| 1414 | if (current_SC->use_sg) { |
| 1415 | current_SC->SCp.buffer = |
| 1416 | (struct scatterlist *)current_SC->request_buffer; |
| 1417 | current_SC->SCp.ptr = page_address(current_SC->SCp.buffer->page) + current_SC->SCp.buffer->offset; |
| 1418 | current_SC->SCp.this_residual = current_SC->SCp.buffer->length; |
| 1419 | current_SC->SCp.buffers_residual = current_SC->use_sg - 1; |
| 1420 | } else { |
| 1421 | current_SC->SCp.ptr = (char *)current_SC->request_buffer; |
| 1422 | current_SC->SCp.this_residual = current_SC->request_bufflen; |
| 1423 | current_SC->SCp.buffer = NULL; |
| 1424 | current_SC->SCp.buffers_residual = 0; |
| 1425 | } |
| 1426 | |
| 1427 | |
| 1428 | current_SC->SCp.Status = 0; |
| 1429 | current_SC->SCp.Message = 0; |
| 1430 | current_SC->SCp.have_data_in = 0; |
| 1431 | current_SC->SCp.sent_command = 0; |
| 1432 | current_SC->SCp.phase = in_arbitration; |
| 1433 | |
| 1434 | /* Start arbitration */ |
| 1435 | outb(0x00, port_base + Interrupt_Cntl); |
| 1436 | outb(0x00, port_base + SCSI_Cntl); /* Disable data drivers */ |
| 1437 | outb(adapter_mask, port_base + SCSI_Data_NoACK); /* Set our id bit */ |
| 1438 | ++in_command; |
| 1439 | outb(0x20, port_base + Interrupt_Cntl); |
| 1440 | outb(0x14 | PARITY_MASK, port_base + TMC_Cntl); /* Start arbitration */ |
| 1441 | |
| 1442 | return 0; |
| 1443 | } |
| 1444 | |
| 1445 | #if DEBUG_ABORT |
| 1446 | static void print_info(struct scsi_cmnd *SCpnt) |
| 1447 | { |
| 1448 | unsigned int imr; |
| 1449 | unsigned int irr; |
| 1450 | unsigned int isr; |
| 1451 | |
| 1452 | if (!SCpnt || !SCpnt->device || !SCpnt->device->host) { |
| 1453 | printk(KERN_WARNING "scsi: <fdomain> Cannot provide detailed information\n"); |
| 1454 | return; |
| 1455 | } |
| 1456 | |
| 1457 | printk(KERN_INFO "%s\n", fdomain_16x0_info( SCpnt->device->host ) ); |
| 1458 | print_banner(SCpnt->device->host); |
| 1459 | switch (SCpnt->SCp.phase) { |
| 1460 | case in_arbitration: printk("arbitration"); break; |
| 1461 | case in_selection: printk("selection"); break; |
| 1462 | case in_other: printk("other"); break; |
| 1463 | default: printk("unknown"); break; |
| 1464 | } |
| 1465 | |
| 1466 | printk( " (%d), target = %d cmnd = 0x%02x pieces = %d size = %u\n", |
| 1467 | SCpnt->SCp.phase, |
| 1468 | SCpnt->device->id, |
| 1469 | *(unsigned char *)SCpnt->cmnd, |
| 1470 | SCpnt->use_sg, |
| 1471 | SCpnt->request_bufflen ); |
| 1472 | printk( "sent_command = %d, have_data_in = %d, timeout = %d\n", |
| 1473 | SCpnt->SCp.sent_command, |
| 1474 | SCpnt->SCp.have_data_in, |
| 1475 | SCpnt->timeout ); |
| 1476 | #if DEBUG_RACE |
| 1477 | printk( "in_interrupt_flag = %d\n", in_interrupt_flag ); |
| 1478 | #endif |
| 1479 | |
| 1480 | imr = (inb( 0x0a1 ) << 8) + inb( 0x21 ); |
| 1481 | outb( 0x0a, 0xa0 ); |
| 1482 | irr = inb( 0xa0 ) << 8; |
| 1483 | outb( 0x0a, 0x20 ); |
| 1484 | irr += inb( 0x20 ); |
| 1485 | outb( 0x0b, 0xa0 ); |
| 1486 | isr = inb( 0xa0 ) << 8; |
| 1487 | outb( 0x0b, 0x20 ); |
| 1488 | isr += inb( 0x20 ); |
| 1489 | |
| 1490 | /* Print out interesting information */ |
| 1491 | printk( "IMR = 0x%04x", imr ); |
| 1492 | if (imr & (1 << interrupt_level)) |
| 1493 | printk( " (masked)" ); |
| 1494 | printk( ", IRR = 0x%04x, ISR = 0x%04x\n", irr, isr ); |
| 1495 | |
| 1496 | printk( "SCSI Status = 0x%02x\n", inb(port_base + SCSI_Status)); |
| 1497 | printk( "TMC Status = 0x%02x", inb(port_base + TMC_Status)); |
| 1498 | if (inb((port_base + TMC_Status) & 1)) |
| 1499 | printk( " (interrupt)" ); |
| 1500 | printk( "\n" ); |
| 1501 | printk("Interrupt Status = 0x%02x", inb(port_base + Interrupt_Status)); |
| 1502 | if (inb(port_base + Interrupt_Status) & 0x08) |
| 1503 | printk( " (enabled)" ); |
| 1504 | printk( "\n" ); |
| 1505 | if (chip == tmc18c50 || chip == tmc18c30) { |
| 1506 | printk("FIFO Status = 0x%02x\n", inb(port_base + FIFO_Status)); |
| 1507 | printk( "Int. Condition = 0x%02x\n", |
| 1508 | inb( port_base + Interrupt_Cond ) ); |
| 1509 | } |
| 1510 | printk( "Configuration 1 = 0x%02x\n", inb( port_base + Configuration1 ) ); |
| 1511 | if (chip == tmc18c50 || chip == tmc18c30) |
| 1512 | printk( "Configuration 2 = 0x%02x\n", |
| 1513 | inb( port_base + Configuration2 ) ); |
| 1514 | } |
| 1515 | #endif |
| 1516 | |
| 1517 | static int fdomain_16x0_abort(struct scsi_cmnd *SCpnt) |
| 1518 | { |
| 1519 | #if EVERY_ACCESS || ERRORS_ONLY || DEBUG_ABORT |
| 1520 | printk( "scsi: <fdomain> abort " ); |
| 1521 | #endif |
| 1522 | |
| 1523 | if (!in_command) { |
| 1524 | #if EVERY_ACCESS || ERRORS_ONLY |
| 1525 | printk( " (not in command)\n" ); |
| 1526 | #endif |
| 1527 | return FAILED; |
| 1528 | } else printk( "\n" ); |
| 1529 | |
| 1530 | #if DEBUG_ABORT |
| 1531 | print_info( SCpnt ); |
| 1532 | #endif |
| 1533 | |
| 1534 | fdomain_make_bus_idle(); |
| 1535 | current_SC->SCp.phase |= aborted; |
| 1536 | current_SC->result = DID_ABORT << 16; |
| 1537 | |
| 1538 | /* Aborts are not done well. . . */ |
| 1539 | my_done(DID_ABORT << 16); |
| 1540 | return SUCCESS; |
| 1541 | } |
| 1542 | |
| 1543 | int fdomain_16x0_bus_reset(struct scsi_cmnd *SCpnt) |
| 1544 | { |
Jeff Garzik | 68b3aa7 | 2005-05-28 07:56:31 -0400 | [diff] [blame] | 1545 | unsigned long flags; |
| 1546 | |
| 1547 | local_irq_save(flags); |
| 1548 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1549 | outb(1, port_base + SCSI_Cntl); |
| 1550 | do_pause( 2 ); |
| 1551 | outb(0, port_base + SCSI_Cntl); |
| 1552 | do_pause( 115 ); |
| 1553 | outb(0, port_base + SCSI_Mode_Cntl); |
| 1554 | outb(PARITY_MASK, port_base + TMC_Cntl); |
Jeff Garzik | 68b3aa7 | 2005-05-28 07:56:31 -0400 | [diff] [blame] | 1555 | |
| 1556 | local_irq_restore(flags); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1557 | return SUCCESS; |
| 1558 | } |
| 1559 | |
| 1560 | static int fdomain_16x0_biosparam(struct scsi_device *sdev, |
| 1561 | struct block_device *bdev, |
| 1562 | sector_t capacity, int *info_array) |
| 1563 | { |
| 1564 | int drive; |
| 1565 | int size = capacity; |
| 1566 | unsigned long offset; |
| 1567 | struct drive_info { |
| 1568 | unsigned short cylinders; |
| 1569 | unsigned char heads; |
| 1570 | unsigned char sectors; |
| 1571 | } i; |
| 1572 | |
| 1573 | /* NOTES: |
| 1574 | The RAM area starts at 0x1f00 from the bios_base address. |
| 1575 | |
| 1576 | For BIOS Version 2.0: |
| 1577 | |
| 1578 | The drive parameter table seems to start at 0x1f30. |
| 1579 | The first byte's purpose is not known. |
| 1580 | Next is the cylinder, head, and sector information. |
| 1581 | The last 4 bytes appear to be the drive's size in sectors. |
| 1582 | The other bytes in the drive parameter table are unknown. |
| 1583 | If anyone figures them out, please send me mail, and I will |
| 1584 | update these notes. |
| 1585 | |
| 1586 | Tape drives do not get placed in this table. |
| 1587 | |
| 1588 | There is another table at 0x1fea: |
| 1589 | If the byte is 0x01, then the SCSI ID is not in use. |
| 1590 | If the byte is 0x18 or 0x48, then the SCSI ID is in use, |
| 1591 | although tapes don't seem to be in this table. I haven't |
| 1592 | seen any other numbers (in a limited sample). |
| 1593 | |
| 1594 | 0x1f2d is a drive count (i.e., not including tapes) |
| 1595 | |
| 1596 | The table at 0x1fcc are I/O ports addresses for the various |
| 1597 | operations. I calculate these by hand in this driver code. |
| 1598 | |
| 1599 | |
| 1600 | |
| 1601 | For the ISA-200S version of BIOS Version 2.0: |
| 1602 | |
| 1603 | The drive parameter table starts at 0x1f33. |
| 1604 | |
| 1605 | WARNING: Assume that the table entry is 25 bytes long. Someone needs |
| 1606 | to check this for the Quantum ISA-200S card. |
| 1607 | |
| 1608 | |
| 1609 | |
| 1610 | For BIOS Version 3.2: |
| 1611 | |
| 1612 | The drive parameter table starts at 0x1f70. Each entry is |
| 1613 | 0x0a bytes long. Heads are one less than we need to report. |
| 1614 | */ |
| 1615 | |
| 1616 | if (MAJOR(bdev->bd_dev) != SCSI_DISK0_MAJOR) { |
| 1617 | printk("scsi: <fdomain> fdomain_16x0_biosparam: too many disks"); |
| 1618 | return 0; |
| 1619 | } |
| 1620 | drive = MINOR(bdev->bd_dev) >> 4; |
| 1621 | |
| 1622 | if (bios_major == 2) { |
| 1623 | switch (Quantum) { |
| 1624 | case 2: /* ISA_200S */ |
| 1625 | /* The value of 25 has never been verified. |
| 1626 | It should probably be 15. */ |
| 1627 | offset = 0x1f33 + drive * 25; |
| 1628 | break; |
| 1629 | case 3: /* ISA_250MG */ |
| 1630 | offset = 0x1f36 + drive * 15; |
| 1631 | break; |
| 1632 | case 4: /* ISA_200S (another one) */ |
| 1633 | offset = 0x1f34 + drive * 15; |
| 1634 | break; |
| 1635 | default: |
| 1636 | offset = 0x1f31 + drive * 25; |
| 1637 | break; |
| 1638 | } |
| 1639 | memcpy_fromio( &i, bios_mem + offset, sizeof( struct drive_info ) ); |
| 1640 | info_array[0] = i.heads; |
| 1641 | info_array[1] = i.sectors; |
| 1642 | info_array[2] = i.cylinders; |
| 1643 | } else if (bios_major == 3 |
| 1644 | && bios_minor >= 0 |
| 1645 | && bios_minor < 4) { /* 3.0 and 3.2 BIOS */ |
| 1646 | memcpy_fromio( &i, bios_mem + 0x1f71 + drive * 10, |
| 1647 | sizeof( struct drive_info ) ); |
| 1648 | info_array[0] = i.heads + 1; |
| 1649 | info_array[1] = i.sectors; |
| 1650 | info_array[2] = i.cylinders; |
| 1651 | } else { /* 3.4 BIOS (and up?) */ |
| 1652 | /* This algorithm was provided by Future Domain (much thanks!). */ |
| 1653 | unsigned char *p = scsi_bios_ptable(bdev); |
| 1654 | |
| 1655 | if (p && p[65] == 0xaa && p[64] == 0x55 /* Partition table valid */ |
| 1656 | && p[4]) { /* Partition type */ |
| 1657 | |
| 1658 | /* The partition table layout is as follows: |
| 1659 | |
| 1660 | Start: 0x1b3h |
| 1661 | Offset: 0 = partition status |
| 1662 | 1 = starting head |
| 1663 | 2 = starting sector and cylinder (word, encoded) |
| 1664 | 4 = partition type |
| 1665 | 5 = ending head |
| 1666 | 6 = ending sector and cylinder (word, encoded) |
| 1667 | 8 = starting absolute sector (double word) |
| 1668 | c = number of sectors (double word) |
| 1669 | Signature: 0x1fe = 0x55aa |
| 1670 | |
| 1671 | So, this algorithm assumes: |
| 1672 | 1) the first partition table is in use, |
| 1673 | 2) the data in the first entry is correct, and |
| 1674 | 3) partitions never divide cylinders |
| 1675 | |
| 1676 | Note that (1) may be FALSE for NetBSD (and other BSD flavors), |
| 1677 | as well as for Linux. Note also, that Linux doesn't pay any |
| 1678 | attention to the fields that are used by this algorithm -- it |
| 1679 | only uses the absolute sector data. Recent versions of Linux's |
| 1680 | fdisk(1) will fill this data in correctly, and forthcoming |
| 1681 | versions will check for consistency. |
| 1682 | |
| 1683 | Checking for a non-zero partition type is not part of the |
| 1684 | Future Domain algorithm, but it seemed to be a reasonable thing |
| 1685 | to do, especially in the Linux and BSD worlds. */ |
| 1686 | |
| 1687 | info_array[0] = p[5] + 1; /* heads */ |
| 1688 | info_array[1] = p[6] & 0x3f; /* sectors */ |
| 1689 | } else { |
| 1690 | |
| 1691 | /* Note that this new method guarantees that there will always be |
| 1692 | less than 1024 cylinders on a platter. This is good for drives |
| 1693 | up to approximately 7.85GB (where 1GB = 1024 * 1024 kB). */ |
| 1694 | |
| 1695 | if ((unsigned int)size >= 0x7e0000U) { |
| 1696 | info_array[0] = 0xff; /* heads = 255 */ |
| 1697 | info_array[1] = 0x3f; /* sectors = 63 */ |
| 1698 | } else if ((unsigned int)size >= 0x200000U) { |
| 1699 | info_array[0] = 0x80; /* heads = 128 */ |
| 1700 | info_array[1] = 0x3f; /* sectors = 63 */ |
| 1701 | } else { |
| 1702 | info_array[0] = 0x40; /* heads = 64 */ |
| 1703 | info_array[1] = 0x20; /* sectors = 32 */ |
| 1704 | } |
| 1705 | } |
| 1706 | /* For both methods, compute the cylinders */ |
| 1707 | info_array[2] = (unsigned int)size / (info_array[0] * info_array[1] ); |
| 1708 | kfree(p); |
| 1709 | } |
| 1710 | |
| 1711 | return 0; |
| 1712 | } |
| 1713 | |
| 1714 | static int fdomain_16x0_release(struct Scsi_Host *shpnt) |
| 1715 | { |
| 1716 | if (shpnt->irq) |
| 1717 | free_irq(shpnt->irq, shpnt); |
| 1718 | if (shpnt->io_port && shpnt->n_io_port) |
| 1719 | release_region(shpnt->io_port, shpnt->n_io_port); |
| 1720 | return 0; |
| 1721 | } |
| 1722 | |
| 1723 | struct scsi_host_template fdomain_driver_template = { |
| 1724 | .module = THIS_MODULE, |
| 1725 | .name = "fdomain", |
| 1726 | .proc_name = "fdomain", |
| 1727 | .detect = fdomain_16x0_detect, |
| 1728 | .info = fdomain_16x0_info, |
| 1729 | .queuecommand = fdomain_16x0_queue, |
| 1730 | .eh_abort_handler = fdomain_16x0_abort, |
| 1731 | .eh_bus_reset_handler = fdomain_16x0_bus_reset, |
| 1732 | .bios_param = fdomain_16x0_biosparam, |
| 1733 | .release = fdomain_16x0_release, |
| 1734 | .can_queue = 1, |
| 1735 | .this_id = 6, |
| 1736 | .sg_tablesize = 64, |
| 1737 | .cmd_per_lun = 1, |
| 1738 | .use_clustering = DISABLE_CLUSTERING, |
| 1739 | }; |
| 1740 | |
| 1741 | #ifndef PCMCIA |
| 1742 | #define driver_template fdomain_driver_template |
| 1743 | #include "scsi_module.c" |
| 1744 | #endif |