1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* aha152x.c -- Adaptec AHA-152x driver 3 * Author: Jürgen E. Fischer, fischer@norbit.de 4 * Copyright 1993-2004 Jürgen E. Fischer 5 * 6 * $Id: aha152x.c,v 2.7 2004/01/24 11:42:59 fischer Exp $ 7 * 8 * $Log: aha152x.c,v $ 9 * Revision 2.7 2004/01/24 11:42:59 fischer 10 * - gather code that is not used by PCMCIA at the end 11 * - move request_region for !PCMCIA case to detection 12 * - migration to new scsi host api (remove legacy code) 13 * - free host scribble before scsi_done 14 * - fix error handling 15 * - one isapnp device added to id_table 16 * 17 * Revision 2.6 2003/10/30 20:52:47 fischer 18 * - interfaces changes for kernel 2.6 19 * - aha152x_probe_one introduced for pcmcia stub 20 * - fixed pnpdev handling 21 * - instead of allocation a new one, reuse command for request sense after check condition and reset 22 * - fixes race in is_complete 23 * 24 * Revision 2.5 2002/04/14 11:24:53 fischer 25 * - isapnp support 26 * - abort fixed 27 * - 2.5 support 28 * 29 * Revision 2.4 2000/12/16 12:53:56 fischer 30 * - allow REQUEST SENSE to be queued 31 * - handle shared PCI interrupts 32 * 33 * Revision 2.3 2000/11/04 16:40:26 fischer 34 * - handle data overruns 35 * - extend timeout for data phases 36 * 37 * Revision 2.2 2000/08/08 19:54:53 fischer 38 * - minor changes 39 * 40 * Revision 2.1 2000/05/17 16:23:17 fischer 41 * - signature update 42 * - fix for data out w/o scatter gather 43 * 44 * Revision 2.0 1999/12/25 15:07:32 fischer 45 * - interrupt routine completly reworked 46 * - basic support for new eh code 47 * 48 * Revision 1.21 1999/11/10 23:46:36 fischer 49 * - default to synchronous operation 50 * - synchronous negotiation fixed 51 * - added timeout to loops 52 * - debugging output can be controlled through procfs 53 * 54 * Revision 1.20 1999/11/07 18:37:31 fischer 55 * - synchronous operation works 56 * - resid support for sg driver 57 * 58 * Revision 1.19 1999/11/02 22:39:59 fischer 59 * - moved leading comments to README.aha152x 60 * - new additional module parameters 61 * - updates for 2.3 62 * - support for the Tripace TC1550 controller 63 * - interrupt handling changed 64 * 65 * Revision 1.18 1996/09/07 20:10:40 fischer 66 * - fixed can_queue handling (multiple outstanding commands working again) 67 * 68 * Revision 1.17 1996/08/17 16:05:14 fischer 69 * - biosparam improved 70 * - interrupt verification 71 * - updated documentation 72 * - cleanups 73 * 74 * Revision 1.16 1996/06/09 00:04:56 root 75 * - added configuration symbols for insmod (aha152x/aha152x1) 76 * 77 * Revision 1.15 1996/04/30 14:52:06 fischer 78 * - proc info fixed 79 * - support for extended translation for >1GB disks 80 * 81 * Revision 1.14 1996/01/17 15:11:20 fischer 82 * - fixed lockup in MESSAGE IN phase after reconnection 83 * 84 * Revision 1.13 1996/01/09 02:15:53 fischer 85 * - some cleanups 86 * - moved request_irq behind controller initialization 87 * (to avoid spurious interrupts) 88 * 89 * Revision 1.12 1995/12/16 12:26:07 fischer 90 * - barrier()s added 91 * - configurable RESET delay added 92 * 93 * Revision 1.11 1995/12/06 21:18:35 fischer 94 * - some minor updates 95 * 96 * Revision 1.10 1995/07/22 19:18:45 fischer 97 * - support for 2 controllers 98 * - started synchronous data transfers (not working yet) 99 * 100 * Revision 1.9 1995/03/18 09:20:24 root 101 * - patches for PCMCIA and modules 102 * 103 * Revision 1.8 1995/01/21 22:07:19 root 104 * - snarf_region => request_region 105 * - aha152x_intr interface change 106 * 107 * Revision 1.7 1995/01/02 23:19:36 root 108 * - updated COMMAND_SIZE to cmd_len 109 * - changed sti() to restore_flags() 110 * - fixed some #ifdef which generated warnings 111 * 112 * Revision 1.6 1994/11/24 20:35:27 root 113 * - problem with odd number of bytes in fifo fixed 114 * 115 * Revision 1.5 1994/10/30 14:39:56 root 116 * - abort code fixed 117 * - debugging improved 118 * 119 * Revision 1.4 1994/09/12 11:33:01 root 120 * - irqaction to request_irq 121 * - abortion updated 122 * 123 * Revision 1.3 1994/08/04 13:53:05 root 124 * - updates for mid-level-driver changes 125 * - accept unexpected BUSFREE phase as error condition 126 * - parity check now configurable 127 * 128 * Revision 1.2 1994/07/03 12:56:36 root 129 * - cleaned up debugging code 130 * - more tweaking on reset delays 131 * - updated abort/reset code (pretty untested...) 132 * 133 * Revision 1.1 1994/05/28 21:18:49 root 134 * - update for mid-level interface change (abort-reset) 135 * - delays after resets adjusted for some slow devices 136 * 137 * Revision 1.0 1994/03/25 12:52:00 root 138 * - Fixed "more data than expected" problem 139 * - added new BIOS signatures 140 * 141 * Revision 0.102 1994/01/31 20:44:12 root 142 * - minor changes in insw/outsw handling 143 * 144 * Revision 0.101 1993/12/13 01:16:27 root 145 * - fixed STATUS phase (non-GOOD stati were dropped sometimes; 146 * fixes problems with CD-ROM sector size detection & media change) 147 * 148 * Revision 0.100 1993/12/10 16:58:47 root 149 * - fix for unsuccessful selections in case of non-continuous id assignments 150 * on the scsi bus. 151 * 152 * Revision 0.99 1993/10/24 16:19:59 root 153 * - fixed DATA IN (rare read errors gone) 154 * 155 * Revision 0.98 1993/10/17 12:54:44 root 156 * - fixed some recent fixes (shame on me) 157 * - moved initialization of scratch area to aha152x_queue 158 * 159 * Revision 0.97 1993/10/09 18:53:53 root 160 * - DATA IN fixed. Rarely left data in the fifo. 161 * 162 * Revision 0.96 1993/10/03 00:53:59 root 163 * - minor changes on DATA IN 164 * 165 * Revision 0.95 1993/09/24 10:36:01 root 166 * - change handling of MSGI after reselection 167 * - fixed sti/cli 168 * - minor changes 169 * 170 * Revision 0.94 1993/09/18 14:08:22 root 171 * - fixed bug in multiple outstanding command code 172 * - changed detection 173 * - support for kernel command line configuration 174 * - reset corrected 175 * - changed message handling 176 * 177 * Revision 0.93 1993/09/15 20:41:19 root 178 * - fixed bugs with multiple outstanding commands 179 * 180 * Revision 0.92 1993/09/13 02:46:33 root 181 * - multiple outstanding commands work (no problems with IBM drive) 182 * 183 * Revision 0.91 1993/09/12 20:51:46 root 184 * added multiple outstanding commands 185 * (some problem with this $%&? IBM device remain) 186 * 187 * Revision 0.9 1993/09/12 11:11:22 root 188 * - corrected auto-configuration 189 * - changed the auto-configuration (added some '#define's) 190 * - added support for dis-/reconnection 191 * 192 * Revision 0.8 1993/09/06 23:09:39 root 193 * - added support for the drive activity light 194 * - minor changes 195 * 196 * Revision 0.7 1993/09/05 14:30:15 root 197 * - improved phase detection 198 * - now using the new snarf_region code of 0.99pl13 199 * 200 * Revision 0.6 1993/09/02 11:01:38 root 201 * first public release; added some signatures and biosparam() 202 * 203 * Revision 0.5 1993/08/30 10:23:30 root 204 * fixed timing problems with my IBM drive 205 * 206 * Revision 0.4 1993/08/29 14:06:52 root 207 * fixed some problems with timeouts due incomplete commands 208 * 209 * Revision 0.3 1993/08/28 15:55:03 root 210 * writing data works too. mounted and worked on a dos partition 211 * 212 * Revision 0.2 1993/08/27 22:42:07 root 213 * reading data works. Mounted a msdos partition. 214 * 215 * Revision 0.1 1993/08/25 13:38:30 root 216 * first "damn thing doesn't work" version 217 * 218 * Revision 0.0 1993/08/14 19:54:25 root 219 * empty function bodies; detect() works. 220 * 221 ************************************************************************** 222 223 see Documentation/scsi/aha152x.txt for configuration details 224 225 **************************************************************************/ 226 227 #include <linux/module.h> 228 #include <asm/irq.h> 229 #include <linux/io.h> 230 #include <linux/blkdev.h> 231 #include <linux/completion.h> 232 #include <linux/errno.h> 233 #include <linux/string.h> 234 #include <linux/wait.h> 235 #include <linux/ioport.h> 236 #include <linux/delay.h> 237 #include <linux/proc_fs.h> 238 #include <linux/interrupt.h> 239 #include <linux/init.h> 240 #include <linux/kernel.h> 241 #include <linux/isapnp.h> 242 #include <linux/spinlock.h> 243 #include <linux/workqueue.h> 244 #include <linux/list.h> 245 #include <linux/slab.h> 246 #include <scsi/scsicam.h> 247 248 #include "scsi.h" 249 #include <scsi/scsi_dbg.h> 250 #include <scsi/scsi_host.h> 251 #include <scsi/scsi_transport_spi.h> 252 #include <scsi/scsi_eh.h> 253 #include "aha152x.h" 254 255 static LIST_HEAD(aha152x_host_list); 256 257 258 /* DEFINES */ 259 260 /* For PCMCIA cards, always use AUTOCONF */ 261 #if defined(AHA152X_PCMCIA) || defined(MODULE) 262 #if !defined(AUTOCONF) 263 #define AUTOCONF 264 #endif 265 #endif 266 267 #if !defined(AUTOCONF) && !defined(SETUP0) 268 #error define AUTOCONF or SETUP0 269 #endif 270 271 #define DO_LOCK(flags) spin_lock_irqsave(&QLOCK,flags) 272 #define DO_UNLOCK(flags) spin_unlock_irqrestore(&QLOCK,flags) 273 274 #define LEAD "(scsi%d:%d:%d) " 275 #define INFO_LEAD KERN_INFO LEAD 276 #define CMDINFO(cmd) \ 277 (cmd) ? ((cmd)->device->host->host_no) : -1, \ 278 (cmd) ? ((cmd)->device->id & 0x0f) : -1, \ 279 (cmd) ? ((u8)(cmd)->device->lun & 0x07) : -1 280 281 static inline void 282 CMD_INC_RESID(struct scsi_cmnd *cmd, int inc) 283 { 284 scsi_set_resid(cmd, scsi_get_resid(cmd) + inc); 285 } 286 287 #define DELAY_DEFAULT 1000 288 289 #if defined(AHA152X_PCMCIA) 290 #define IRQ_MIN 0 291 #define IRQ_MAX 16 292 #else 293 #define IRQ_MIN 9 294 #if defined(__PPC) 295 #define IRQ_MAX (nr_irqs-1) 296 #else 297 #define IRQ_MAX 12 298 #endif 299 #endif 300 301 enum { 302 not_issued = 0x0001, /* command not yet issued */ 303 selecting = 0x0002, /* target is being selected */ 304 identified = 0x0004, /* IDENTIFY was sent */ 305 disconnected = 0x0008, /* target disconnected */ 306 completed = 0x0010, /* target sent COMMAND COMPLETE */ 307 aborted = 0x0020, /* ABORT was sent */ 308 resetted = 0x0040, /* BUS DEVICE RESET was sent */ 309 spiordy = 0x0080, /* waiting for SPIORDY to raise */ 310 syncneg = 0x0100, /* synchronous negotiation in progress */ 311 aborting = 0x0200, /* ABORT is pending */ 312 resetting = 0x0400, /* BUS DEVICE RESET is pending */ 313 check_condition = 0x0800, /* requesting sense after CHECK CONDITION */ 314 }; 315 316 MODULE_AUTHOR("Jürgen Fischer"); 317 MODULE_DESCRIPTION(AHA152X_REVID); 318 MODULE_LICENSE("GPL"); 319 320 #if !defined(AHA152X_PCMCIA) 321 #if defined(MODULE) 322 static int io[] = {0, 0}; 323 module_param_hw_array(io, int, ioport, NULL, 0); 324 MODULE_PARM_DESC(io,"base io address of controller"); 325 326 static int irq[] = {0, 0}; 327 module_param_hw_array(irq, int, irq, NULL, 0); 328 MODULE_PARM_DESC(irq,"interrupt for controller"); 329 330 static int scsiid[] = {7, 7}; 331 module_param_array(scsiid, int, NULL, 0); 332 MODULE_PARM_DESC(scsiid,"scsi id of controller"); 333 334 static int reconnect[] = {1, 1}; 335 module_param_array(reconnect, int, NULL, 0); 336 MODULE_PARM_DESC(reconnect,"allow targets to disconnect"); 337 338 static int parity[] = {1, 1}; 339 module_param_array(parity, int, NULL, 0); 340 MODULE_PARM_DESC(parity,"use scsi parity"); 341 342 static int sync[] = {1, 1}; 343 module_param_array(sync, int, NULL, 0); 344 MODULE_PARM_DESC(sync,"use synchronous transfers"); 345 346 static int delay[] = {DELAY_DEFAULT, DELAY_DEFAULT}; 347 module_param_array(delay, int, NULL, 0); 348 MODULE_PARM_DESC(delay,"scsi reset delay"); 349 350 static int exttrans[] = {0, 0}; 351 module_param_array(exttrans, int, NULL, 0); 352 MODULE_PARM_DESC(exttrans,"use extended translation"); 353 354 static int aha152x[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0}; 355 module_param_array(aha152x, int, NULL, 0); 356 MODULE_PARM_DESC(aha152x, "parameters for first controller"); 357 358 static int aha152x1[] = {0, 11, 7, 1, 1, 0, DELAY_DEFAULT, 0}; 359 module_param_array(aha152x1, int, NULL, 0); 360 MODULE_PARM_DESC(aha152x1, "parameters for second controller"); 361 #endif /* MODULE */ 362 363 #ifdef __ISAPNP__ 364 static struct isapnp_device_id id_table[] = { 365 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1502), 0 }, 366 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1505), 0 }, 367 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1510), 0 }, 368 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1515), 0 }, 369 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1520), 0 }, 370 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2015), 0 }, 371 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1522), 0 }, 372 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x2215), 0 }, 373 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1530), 0 }, 374 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3015), 0 }, 375 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x1532), 0 }, 376 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x3215), 0 }, 377 { ISAPNP_ANY_ID, ISAPNP_ANY_ID, ISAPNP_VENDOR('A', 'D', 'P'), ISAPNP_FUNCTION(0x6360), 0 }, 378 { ISAPNP_DEVICE_SINGLE_END, } 379 }; 380 MODULE_DEVICE_TABLE(isapnp, id_table); 381 #endif /* ISAPNP */ 382 383 #endif /* !AHA152X_PCMCIA */ 384 385 static struct scsi_host_template aha152x_driver_template; 386 387 /* 388 * internal states of the host 389 * 390 */ 391 enum aha152x_state { 392 idle=0, 393 unknown, 394 seldo, 395 seldi, 396 selto, 397 busfree, 398 msgo, 399 cmd, 400 msgi, 401 status, 402 datai, 403 datao, 404 parerr, 405 rsti, 406 maxstate 407 }; 408 409 /* 410 * current state information of the host 411 * 412 */ 413 struct aha152x_hostdata { 414 struct scsi_cmnd *issue_SC; 415 /* pending commands to issue */ 416 417 struct scsi_cmnd *current_SC; 418 /* current command on the bus */ 419 420 struct scsi_cmnd *disconnected_SC; 421 /* commands that disconnected */ 422 423 struct scsi_cmnd *done_SC; 424 /* command that was completed */ 425 426 spinlock_t lock; 427 /* host lock */ 428 429 #if defined(AHA152X_STAT) 430 int total_commands; 431 int disconnections; 432 int busfree_without_any_action; 433 int busfree_without_old_command; 434 int busfree_without_new_command; 435 int busfree_without_done_command; 436 int busfree_with_check_condition; 437 int count[maxstate]; 438 int count_trans[maxstate]; 439 unsigned long time[maxstate]; 440 #endif 441 442 int commands; /* current number of commands */ 443 444 int reconnect; /* disconnection allowed */ 445 int parity; /* parity checking enabled */ 446 int synchronous; /* synchronous transferes enabled */ 447 int delay; /* reset out delay */ 448 int ext_trans; /* extended translation enabled */ 449 450 int swint; /* software-interrupt was fired during detect() */ 451 int service; /* bh needs to be run */ 452 int in_intr; /* bh is running */ 453 454 /* current state, 455 previous state, 456 last state different from current state */ 457 enum aha152x_state state, prevstate, laststate; 458 459 int target; 460 /* reconnecting target */ 461 462 unsigned char syncrate[8]; 463 /* current synchronous transfer agreements */ 464 465 unsigned char syncneg[8]; 466 /* 0: no negotiation; 467 * 1: negotiation in progress; 468 * 2: negotiation completed 469 */ 470 471 int cmd_i; 472 /* number of sent bytes of current command */ 473 474 int msgi_len; 475 /* number of received message bytes */ 476 unsigned char msgi[256]; 477 /* received message bytes */ 478 479 int msgo_i, msgo_len; 480 /* number of sent bytes and length of current messages */ 481 unsigned char msgo[256]; 482 /* pending messages */ 483 484 int data_len; 485 /* number of sent/received bytes in dataphase */ 486 487 unsigned long io_port0; 488 unsigned long io_port1; 489 490 #ifdef __ISAPNP__ 491 struct pnp_dev *pnpdev; 492 #endif 493 struct list_head host_list; 494 }; 495 496 497 /* 498 * host specific command extension 499 * 500 */ 501 struct aha152x_scdata { 502 struct scsi_cmnd *next; /* next sc in queue */ 503 struct completion *done;/* semaphore to block on */ 504 struct scsi_eh_save ses; 505 }; 506 507 /* access macros for hostdata */ 508 509 #define HOSTDATA(shpnt) ((struct aha152x_hostdata *) &shpnt->hostdata) 510 511 #define HOSTNO ((shpnt)->host_no) 512 513 #define CURRENT_SC (HOSTDATA(shpnt)->current_SC) 514 #define DONE_SC (HOSTDATA(shpnt)->done_SC) 515 #define ISSUE_SC (HOSTDATA(shpnt)->issue_SC) 516 #define DISCONNECTED_SC (HOSTDATA(shpnt)->disconnected_SC) 517 #define QLOCK (HOSTDATA(shpnt)->lock) 518 #define QLOCKER (HOSTDATA(shpnt)->locker) 519 #define QLOCKERL (HOSTDATA(shpnt)->lockerl) 520 521 #define STATE (HOSTDATA(shpnt)->state) 522 #define PREVSTATE (HOSTDATA(shpnt)->prevstate) 523 #define LASTSTATE (HOSTDATA(shpnt)->laststate) 524 525 #define RECONN_TARGET (HOSTDATA(shpnt)->target) 526 527 #define CMD_I (HOSTDATA(shpnt)->cmd_i) 528 529 #define MSGO(i) (HOSTDATA(shpnt)->msgo[i]) 530 #define MSGO_I (HOSTDATA(shpnt)->msgo_i) 531 #define MSGOLEN (HOSTDATA(shpnt)->msgo_len) 532 #define ADDMSGO(x) (MSGOLEN<256 ? (void)(MSGO(MSGOLEN++)=x) : aha152x_error(shpnt,"MSGO overflow")) 533 534 #define MSGI(i) (HOSTDATA(shpnt)->msgi[i]) 535 #define MSGILEN (HOSTDATA(shpnt)->msgi_len) 536 #define ADDMSGI(x) (MSGILEN<256 ? (void)(MSGI(MSGILEN++)=x) : aha152x_error(shpnt,"MSGI overflow")) 537 538 #define DATA_LEN (HOSTDATA(shpnt)->data_len) 539 540 #define SYNCRATE (HOSTDATA(shpnt)->syncrate[CURRENT_SC->device->id]) 541 #define SYNCNEG (HOSTDATA(shpnt)->syncneg[CURRENT_SC->device->id]) 542 543 #define DELAY (HOSTDATA(shpnt)->delay) 544 #define EXT_TRANS (HOSTDATA(shpnt)->ext_trans) 545 #define TC1550 (HOSTDATA(shpnt)->tc1550) 546 #define RECONNECT (HOSTDATA(shpnt)->reconnect) 547 #define PARITY (HOSTDATA(shpnt)->parity) 548 #define SYNCHRONOUS (HOSTDATA(shpnt)->synchronous) 549 550 #define HOSTIOPORT0 (HOSTDATA(shpnt)->io_port0) 551 #define HOSTIOPORT1 (HOSTDATA(shpnt)->io_port1) 552 553 #define SCDATA(SCpnt) ((struct aha152x_scdata *) (SCpnt)->host_scribble) 554 #define SCNEXT(SCpnt) SCDATA(SCpnt)->next 555 #define SCSEM(SCpnt) SCDATA(SCpnt)->done 556 557 #define SG_ADDRESS(buffer) ((char *) sg_virt((buffer))) 558 559 /* state handling */ 560 static void seldi_run(struct Scsi_Host *shpnt); 561 static void seldo_run(struct Scsi_Host *shpnt); 562 static void selto_run(struct Scsi_Host *shpnt); 563 static void busfree_run(struct Scsi_Host *shpnt); 564 565 static void msgo_init(struct Scsi_Host *shpnt); 566 static void msgo_run(struct Scsi_Host *shpnt); 567 static void msgo_end(struct Scsi_Host *shpnt); 568 569 static void cmd_init(struct Scsi_Host *shpnt); 570 static void cmd_run(struct Scsi_Host *shpnt); 571 static void cmd_end(struct Scsi_Host *shpnt); 572 573 static void datai_init(struct Scsi_Host *shpnt); 574 static void datai_run(struct Scsi_Host *shpnt); 575 static void datai_end(struct Scsi_Host *shpnt); 576 577 static void datao_init(struct Scsi_Host *shpnt); 578 static void datao_run(struct Scsi_Host *shpnt); 579 static void datao_end(struct Scsi_Host *shpnt); 580 581 static void status_run(struct Scsi_Host *shpnt); 582 583 static void msgi_run(struct Scsi_Host *shpnt); 584 static void msgi_end(struct Scsi_Host *shpnt); 585 586 static void parerr_run(struct Scsi_Host *shpnt); 587 static void rsti_run(struct Scsi_Host *shpnt); 588 589 static void is_complete(struct Scsi_Host *shpnt); 590 591 /* 592 * driver states 593 * 594 */ 595 static struct { 596 char *name; 597 void (*init)(struct Scsi_Host *); 598 void (*run)(struct Scsi_Host *); 599 void (*end)(struct Scsi_Host *); 600 int spio; 601 } states[] = { 602 { "idle", NULL, NULL, NULL, 0}, 603 { "unknown", NULL, NULL, NULL, 0}, 604 { "seldo", NULL, seldo_run, NULL, 0}, 605 { "seldi", NULL, seldi_run, NULL, 0}, 606 { "selto", NULL, selto_run, NULL, 0}, 607 { "busfree", NULL, busfree_run, NULL, 0}, 608 { "msgo", msgo_init, msgo_run, msgo_end, 1}, 609 { "cmd", cmd_init, cmd_run, cmd_end, 1}, 610 { "msgi", NULL, msgi_run, msgi_end, 1}, 611 { "status", NULL, status_run, NULL, 1}, 612 { "datai", datai_init, datai_run, datai_end, 0}, 613 { "datao", datao_init, datao_run, datao_end, 0}, 614 { "parerr", NULL, parerr_run, NULL, 0}, 615 { "rsti", NULL, rsti_run, NULL, 0}, 616 }; 617 618 /* setup & interrupt */ 619 static irqreturn_t intr(int irq, void *dev_id); 620 static void reset_ports(struct Scsi_Host *shpnt); 621 static void aha152x_error(struct Scsi_Host *shpnt, char *msg); 622 static void done(struct Scsi_Host *shpnt, int error); 623 624 /* diagnostics */ 625 static void show_command(struct scsi_cmnd * ptr); 626 static void show_queues(struct Scsi_Host *shpnt); 627 static void disp_enintr(struct Scsi_Host *shpnt); 628 629 630 /* 631 * queue services: 632 * 633 */ 634 static inline void append_SC(struct scsi_cmnd **SC, struct scsi_cmnd *new_SC) 635 { 636 struct scsi_cmnd *end; 637 638 SCNEXT(new_SC) = NULL; 639 if (!*SC) 640 *SC = new_SC; 641 else { 642 for (end = *SC; SCNEXT(end); end = SCNEXT(end)) 643 ; 644 SCNEXT(end) = new_SC; 645 } 646 } 647 648 static inline struct scsi_cmnd *remove_first_SC(struct scsi_cmnd ** SC) 649 { 650 struct scsi_cmnd *ptr; 651 652 ptr = *SC; 653 if (ptr) { 654 *SC = SCNEXT(*SC); 655 SCNEXT(ptr)=NULL; 656 } 657 return ptr; 658 } 659 660 static inline struct scsi_cmnd *remove_lun_SC(struct scsi_cmnd ** SC, 661 int target, int lun) 662 { 663 struct scsi_cmnd *ptr, *prev; 664 665 for (ptr = *SC, prev = NULL; 666 ptr && ((ptr->device->id != target) || (ptr->device->lun != lun)); 667 prev = ptr, ptr = SCNEXT(ptr)) 668 ; 669 670 if (ptr) { 671 if (prev) 672 SCNEXT(prev) = SCNEXT(ptr); 673 else 674 *SC = SCNEXT(ptr); 675 676 SCNEXT(ptr)=NULL; 677 } 678 679 return ptr; 680 } 681 682 static inline struct scsi_cmnd *remove_SC(struct scsi_cmnd **SC, 683 struct scsi_cmnd *SCp) 684 { 685 struct scsi_cmnd *ptr, *prev; 686 687 for (ptr = *SC, prev = NULL; 688 ptr && SCp!=ptr; 689 prev = ptr, ptr = SCNEXT(ptr)) 690 ; 691 692 if (ptr) { 693 if (prev) 694 SCNEXT(prev) = SCNEXT(ptr); 695 else 696 *SC = SCNEXT(ptr); 697 698 SCNEXT(ptr)=NULL; 699 } 700 701 return ptr; 702 } 703 704 static irqreturn_t swintr(int irqno, void *dev_id) 705 { 706 struct Scsi_Host *shpnt = dev_id; 707 708 HOSTDATA(shpnt)->swint++; 709 710 SETPORT(DMACNTRL0, INTEN); 711 return IRQ_HANDLED; 712 } 713 714 struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup) 715 { 716 struct Scsi_Host *shpnt; 717 718 shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata)); 719 if (!shpnt) { 720 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n"); 721 return NULL; 722 } 723 724 memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt)); 725 INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list); 726 727 /* need to have host registered before triggering any interrupt */ 728 list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list); 729 730 shpnt->io_port = setup->io_port; 731 shpnt->n_io_port = IO_RANGE; 732 shpnt->irq = setup->irq; 733 734 if (!setup->tc1550) { 735 HOSTIOPORT0 = setup->io_port; 736 HOSTIOPORT1 = setup->io_port; 737 } else { 738 HOSTIOPORT0 = setup->io_port+0x10; 739 HOSTIOPORT1 = setup->io_port-0x10; 740 } 741 742 spin_lock_init(&QLOCK); 743 RECONNECT = setup->reconnect; 744 SYNCHRONOUS = setup->synchronous; 745 PARITY = setup->parity; 746 DELAY = setup->delay; 747 EXT_TRANS = setup->ext_trans; 748 749 SETPORT(SCSIID, setup->scsiid << 4); 750 shpnt->this_id = setup->scsiid; 751 752 if (setup->reconnect) 753 shpnt->can_queue = AHA152X_MAXQUEUE; 754 755 /* RESET OUT */ 756 printk("aha152x: resetting bus...\n"); 757 SETPORT(SCSISEQ, SCSIRSTO); 758 mdelay(256); 759 SETPORT(SCSISEQ, 0); 760 mdelay(DELAY); 761 762 reset_ports(shpnt); 763 764 printk(KERN_INFO 765 "aha152x%d%s: " 766 "vital data: rev=%x, " 767 "io=0x%03lx (0x%03lx/0x%03lx), " 768 "irq=%d, " 769 "scsiid=%d, " 770 "reconnect=%s, " 771 "parity=%s, " 772 "synchronous=%s, " 773 "delay=%d, " 774 "extended translation=%s\n", 775 shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "", 776 GETPORT(REV) & 0x7, 777 shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1, 778 shpnt->irq, 779 shpnt->this_id, 780 RECONNECT ? "enabled" : "disabled", 781 PARITY ? "enabled" : "disabled", 782 SYNCHRONOUS ? "enabled" : "disabled", 783 DELAY, 784 EXT_TRANS ? "enabled" : "disabled"); 785 786 /* not expecting any interrupts */ 787 SETPORT(SIMODE0, 0); 788 SETPORT(SIMODE1, 0); 789 790 if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt)) { 791 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq); 792 goto out_host_put; 793 } 794 795 HOSTDATA(shpnt)->swint = 0; 796 797 printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no); 798 799 mb(); 800 SETPORT(DMACNTRL0, SWINT|INTEN); 801 mdelay(1000); 802 free_irq(shpnt->irq, shpnt); 803 804 if (!HOSTDATA(shpnt)->swint) { 805 if (TESTHI(DMASTAT, INTSTAT)) { 806 printk("lost.\n"); 807 } else { 808 printk("failed.\n"); 809 } 810 811 SETPORT(DMACNTRL0, INTEN); 812 813 printk(KERN_ERR "aha152x%d: irq %d possibly wrong. " 814 "Please verify.\n", shpnt->host_no, shpnt->irq); 815 goto out_host_put; 816 } 817 printk("ok.\n"); 818 819 820 /* clear interrupts */ 821 SETPORT(SSTAT0, 0x7f); 822 SETPORT(SSTAT1, 0xef); 823 824 if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt)) { 825 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq); 826 goto out_host_put; 827 } 828 829 if( scsi_add_host(shpnt, NULL) ) { 830 free_irq(shpnt->irq, shpnt); 831 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no); 832 goto out_host_put; 833 } 834 835 scsi_scan_host(shpnt); 836 837 return shpnt; 838 839 out_host_put: 840 list_del(&HOSTDATA(shpnt)->host_list); 841 scsi_host_put(shpnt); 842 843 return NULL; 844 } 845 846 void aha152x_release(struct Scsi_Host *shpnt) 847 { 848 if (!shpnt) 849 return; 850 851 scsi_remove_host(shpnt); 852 if (shpnt->irq) 853 free_irq(shpnt->irq, shpnt); 854 855 #if !defined(AHA152X_PCMCIA) 856 if (shpnt->io_port) 857 release_region(shpnt->io_port, IO_RANGE); 858 #endif 859 860 #ifdef __ISAPNP__ 861 if (HOSTDATA(shpnt)->pnpdev) 862 pnp_device_detach(HOSTDATA(shpnt)->pnpdev); 863 #endif 864 865 list_del(&HOSTDATA(shpnt)->host_list); 866 scsi_host_put(shpnt); 867 } 868 869 870 /* 871 * setup controller to generate interrupts depending 872 * on current state (lock has to be acquired) 873 * 874 */ 875 static int setup_expected_interrupts(struct Scsi_Host *shpnt) 876 { 877 if(CURRENT_SC) { 878 CURRENT_SC->SCp.phase |= 1 << 16; 879 880 if(CURRENT_SC->SCp.phase & selecting) { 881 SETPORT(SSTAT1, SELTO); 882 SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0)); 883 SETPORT(SIMODE1, ENSELTIMO); 884 } else { 885 SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0); 886 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); 887 } 888 } else if(STATE==seldi) { 889 SETPORT(SIMODE0, 0); 890 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); 891 } else { 892 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); 893 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0)); 894 } 895 896 if(!HOSTDATA(shpnt)->in_intr) 897 SETBITS(DMACNTRL0, INTEN); 898 899 return TESTHI(DMASTAT, INTSTAT); 900 } 901 902 903 /* 904 * Queue a command and setup interrupts for a free bus. 905 */ 906 static int aha152x_internal_queue(struct scsi_cmnd *SCpnt, 907 struct completion *complete, 908 int phase, void (*done)(struct scsi_cmnd *)) 909 { 910 struct Scsi_Host *shpnt = SCpnt->device->host; 911 unsigned long flags; 912 913 SCpnt->scsi_done = done; 914 SCpnt->SCp.phase = not_issued | phase; 915 SCpnt->SCp.Status = 0x1; /* Ilegal status by SCSI standard */ 916 SCpnt->SCp.Message = 0; 917 SCpnt->SCp.have_data_in = 0; 918 SCpnt->SCp.sent_command = 0; 919 920 if(SCpnt->SCp.phase & (resetting|check_condition)) { 921 if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) { 922 scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n"); 923 return FAILED; 924 } 925 } else { 926 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC); 927 if(!SCpnt->host_scribble) { 928 scmd_printk(KERN_ERR, SCpnt, "allocation failed\n"); 929 return FAILED; 930 } 931 } 932 933 SCNEXT(SCpnt) = NULL; 934 SCSEM(SCpnt) = complete; 935 936 /* setup scratch area 937 SCp.ptr : buffer pointer 938 SCp.this_residual : buffer length 939 SCp.buffer : next buffer 940 SCp.phase : current state of the command */ 941 942 if ((phase & resetting) || !scsi_sglist(SCpnt)) { 943 SCpnt->SCp.ptr = NULL; 944 SCpnt->SCp.this_residual = 0; 945 scsi_set_resid(SCpnt, 0); 946 SCpnt->SCp.buffer = NULL; 947 } else { 948 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); 949 SCpnt->SCp.buffer = scsi_sglist(SCpnt); 950 SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer); 951 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length; 952 } 953 954 DO_LOCK(flags); 955 956 #if defined(AHA152X_STAT) 957 HOSTDATA(shpnt)->total_commands++; 958 #endif 959 960 /* Turn led on, when this is the first command. */ 961 HOSTDATA(shpnt)->commands++; 962 if (HOSTDATA(shpnt)->commands==1) 963 SETPORT(PORTA, 1); 964 965 append_SC(&ISSUE_SC, SCpnt); 966 967 if(!HOSTDATA(shpnt)->in_intr) 968 setup_expected_interrupts(shpnt); 969 970 DO_UNLOCK(flags); 971 972 return 0; 973 } 974 975 /* 976 * queue a command 977 * 978 */ 979 static int aha152x_queue_lck(struct scsi_cmnd *SCpnt, 980 void (*done)(struct scsi_cmnd *)) 981 { 982 return aha152x_internal_queue(SCpnt, NULL, 0, done); 983 } 984 985 static DEF_SCSI_QCMD(aha152x_queue) 986 987 988 /* 989 * 990 */ 991 static void reset_done(struct scsi_cmnd *SCpnt) 992 { 993 if(SCSEM(SCpnt)) { 994 complete(SCSEM(SCpnt)); 995 } else { 996 printk(KERN_ERR "aha152x: reset_done w/o completion\n"); 997 } 998 } 999 1000 /* 1001 * Abort a command 1002 * 1003 */ 1004 static int aha152x_abort(struct scsi_cmnd *SCpnt) 1005 { 1006 struct Scsi_Host *shpnt = SCpnt->device->host; 1007 struct scsi_cmnd *ptr; 1008 unsigned long flags; 1009 1010 DO_LOCK(flags); 1011 1012 ptr=remove_SC(&ISSUE_SC, SCpnt); 1013 1014 if(ptr) { 1015 HOSTDATA(shpnt)->commands--; 1016 if (!HOSTDATA(shpnt)->commands) 1017 SETPORT(PORTA, 0); 1018 DO_UNLOCK(flags); 1019 1020 kfree(SCpnt->host_scribble); 1021 SCpnt->host_scribble=NULL; 1022 1023 return SUCCESS; 1024 } 1025 1026 DO_UNLOCK(flags); 1027 1028 /* 1029 * FIXME: 1030 * for current command: queue ABORT for message out and raise ATN 1031 * for disconnected command: pseudo SC with ABORT message or ABORT on reselection? 1032 * 1033 */ 1034 1035 scmd_printk(KERN_ERR, SCpnt, 1036 "cannot abort running or disconnected command\n"); 1037 1038 return FAILED; 1039 } 1040 1041 /* 1042 * Reset a device 1043 * 1044 */ 1045 static int aha152x_device_reset(struct scsi_cmnd * SCpnt) 1046 { 1047 struct Scsi_Host *shpnt = SCpnt->device->host; 1048 DECLARE_COMPLETION(done); 1049 int ret, issued, disconnected; 1050 unsigned char old_cmd_len = SCpnt->cmd_len; 1051 unsigned long flags; 1052 unsigned long timeleft; 1053 1054 if(CURRENT_SC==SCpnt) { 1055 scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n"); 1056 return FAILED; 1057 } 1058 1059 DO_LOCK(flags); 1060 issued = remove_SC(&ISSUE_SC, SCpnt) == NULL; 1061 disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt); 1062 DO_UNLOCK(flags); 1063 1064 SCpnt->cmd_len = 0; 1065 1066 aha152x_internal_queue(SCpnt, &done, resetting, reset_done); 1067 1068 timeleft = wait_for_completion_timeout(&done, 100*HZ); 1069 if (!timeleft) { 1070 /* remove command from issue queue */ 1071 DO_LOCK(flags); 1072 remove_SC(&ISSUE_SC, SCpnt); 1073 DO_UNLOCK(flags); 1074 } 1075 1076 SCpnt->cmd_len = old_cmd_len; 1077 1078 DO_LOCK(flags); 1079 1080 if(SCpnt->SCp.phase & resetted) { 1081 HOSTDATA(shpnt)->commands--; 1082 if (!HOSTDATA(shpnt)->commands) 1083 SETPORT(PORTA, 0); 1084 kfree(SCpnt->host_scribble); 1085 SCpnt->host_scribble=NULL; 1086 1087 ret = SUCCESS; 1088 } else { 1089 /* requeue */ 1090 if(!issued) { 1091 append_SC(&ISSUE_SC, SCpnt); 1092 } else if(disconnected) { 1093 append_SC(&DISCONNECTED_SC, SCpnt); 1094 } 1095 1096 ret = FAILED; 1097 } 1098 1099 DO_UNLOCK(flags); 1100 return ret; 1101 } 1102 1103 static void free_hard_reset_SCs(struct Scsi_Host *shpnt, 1104 struct scsi_cmnd **SCs) 1105 { 1106 struct scsi_cmnd *ptr; 1107 1108 ptr=*SCs; 1109 while(ptr) { 1110 struct scsi_cmnd *next; 1111 1112 if(SCDATA(ptr)) { 1113 next = SCNEXT(ptr); 1114 } else { 1115 scmd_printk(KERN_DEBUG, ptr, 1116 "queue corrupted at %p\n", ptr); 1117 next = NULL; 1118 } 1119 1120 if (!ptr->device->soft_reset) { 1121 remove_SC(SCs, ptr); 1122 HOSTDATA(shpnt)->commands--; 1123 kfree(ptr->host_scribble); 1124 ptr->host_scribble=NULL; 1125 } 1126 1127 ptr = next; 1128 } 1129 } 1130 1131 /* 1132 * Reset the bus 1133 * 1134 * AIC-6260 has a hard reset (MRST signal), but apparently 1135 * one cannot trigger it via software. So live with 1136 * a soft reset; no-one seemed to have cared. 1137 */ 1138 static int aha152x_bus_reset_host(struct Scsi_Host *shpnt) 1139 { 1140 unsigned long flags; 1141 1142 DO_LOCK(flags); 1143 1144 free_hard_reset_SCs(shpnt, &ISSUE_SC); 1145 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC); 1146 1147 SETPORT(SCSISEQ, SCSIRSTO); 1148 mdelay(256); 1149 SETPORT(SCSISEQ, 0); 1150 mdelay(DELAY); 1151 1152 setup_expected_interrupts(shpnt); 1153 if(HOSTDATA(shpnt)->commands==0) 1154 SETPORT(PORTA, 0); 1155 1156 DO_UNLOCK(flags); 1157 1158 return SUCCESS; 1159 } 1160 1161 /* 1162 * Reset the bus 1163 * 1164 */ 1165 static int aha152x_bus_reset(struct scsi_cmnd *SCpnt) 1166 { 1167 return aha152x_bus_reset_host(SCpnt->device->host); 1168 } 1169 1170 /* 1171 * Restore default values to the AIC-6260 registers and reset the fifos 1172 * 1173 */ 1174 static void reset_ports(struct Scsi_Host *shpnt) 1175 { 1176 unsigned long flags; 1177 1178 /* disable interrupts */ 1179 SETPORT(DMACNTRL0, RSTFIFO); 1180 1181 SETPORT(SCSISEQ, 0); 1182 1183 SETPORT(SXFRCTL1, 0); 1184 SETPORT(SCSISIG, 0); 1185 SETRATE(0); 1186 1187 /* clear all interrupt conditions */ 1188 SETPORT(SSTAT0, 0x7f); 1189 SETPORT(SSTAT1, 0xef); 1190 1191 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR); 1192 1193 SETPORT(DMACNTRL0, 0); 1194 SETPORT(DMACNTRL1, 0); 1195 1196 SETPORT(BRSTCNTRL, 0xf1); 1197 1198 /* clear SCSI fifos and transfer count */ 1199 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 1200 SETPORT(SXFRCTL0, CH1); 1201 1202 DO_LOCK(flags); 1203 setup_expected_interrupts(shpnt); 1204 DO_UNLOCK(flags); 1205 } 1206 1207 /* 1208 * Reset the host (bus and controller) 1209 * 1210 */ 1211 int aha152x_host_reset_host(struct Scsi_Host *shpnt) 1212 { 1213 aha152x_bus_reset_host(shpnt); 1214 reset_ports(shpnt); 1215 1216 return SUCCESS; 1217 } 1218 1219 /* 1220 * Return the "logical geometry" 1221 * 1222 */ 1223 static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev, 1224 sector_t capacity, int *info_array) 1225 { 1226 struct Scsi_Host *shpnt = sdev->host; 1227 1228 /* try default translation */ 1229 info_array[0] = 64; 1230 info_array[1] = 32; 1231 info_array[2] = (unsigned long)capacity / (64 * 32); 1232 1233 /* for disks >1GB do some guessing */ 1234 if (info_array[2] >= 1024) { 1235 int info[3]; 1236 1237 /* try to figure out the geometry from the partition table */ 1238 if (scsicam_bios_param(bdev, capacity, info) < 0 || 1239 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) { 1240 if (EXT_TRANS) { 1241 printk(KERN_NOTICE 1242 "aha152x: unable to verify geometry for disk with >1GB.\n" 1243 " using extended translation.\n"); 1244 info_array[0] = 255; 1245 info_array[1] = 63; 1246 info_array[2] = (unsigned long)capacity / (255 * 63); 1247 } else { 1248 printk(KERN_NOTICE 1249 "aha152x: unable to verify geometry for disk with >1GB.\n" 1250 " Using default translation. Please verify yourself.\n" 1251 " Perhaps you need to enable extended translation in the driver.\n" 1252 " See Documentation/scsi/aha152x.txt for details.\n"); 1253 } 1254 } else { 1255 info_array[0] = info[0]; 1256 info_array[1] = info[1]; 1257 info_array[2] = info[2]; 1258 1259 if (info[0] == 255 && !EXT_TRANS) { 1260 printk(KERN_NOTICE 1261 "aha152x: current partition table is using extended translation.\n" 1262 " using it also, although it's not explicitly enabled.\n"); 1263 } 1264 } 1265 } 1266 1267 return 0; 1268 } 1269 1270 /* 1271 * Internal done function 1272 * 1273 */ 1274 static void done(struct Scsi_Host *shpnt, int error) 1275 { 1276 if (CURRENT_SC) { 1277 if(DONE_SC) 1278 scmd_printk(KERN_ERR, CURRENT_SC, 1279 "there's already a completed command %p " 1280 "- will cause abort\n", DONE_SC); 1281 1282 DONE_SC = CURRENT_SC; 1283 CURRENT_SC = NULL; 1284 DONE_SC->result = error; 1285 } else 1286 printk(KERN_ERR "aha152x: done() called outside of command\n"); 1287 } 1288 1289 static struct work_struct aha152x_tq; 1290 1291 /* 1292 * Run service completions on the card with interrupts enabled. 1293 * 1294 */ 1295 static void run(struct work_struct *work) 1296 { 1297 struct aha152x_hostdata *hd; 1298 1299 list_for_each_entry(hd, &aha152x_host_list, host_list) { 1300 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); 1301 1302 is_complete(shost); 1303 } 1304 } 1305 1306 /* 1307 * Interrupt handler 1308 * 1309 */ 1310 static irqreturn_t intr(int irqno, void *dev_id) 1311 { 1312 struct Scsi_Host *shpnt = dev_id; 1313 unsigned long flags; 1314 unsigned char rev, dmacntrl0; 1315 1316 /* 1317 * Read a couple of registers that are known to not be all 1's. If 1318 * we read all 1's (-1), that means that either: 1319 * 1320 * a. The host adapter chip has gone bad, and we cannot control it, 1321 * OR 1322 * b. The host adapter is a PCMCIA card that has been ejected 1323 * 1324 * In either case, we cannot do anything with the host adapter at 1325 * this point in time. So just ignore the interrupt and return. 1326 * In the latter case, the interrupt might actually be meant for 1327 * someone else sharing this IRQ, and that driver will handle it. 1328 */ 1329 rev = GETPORT(REV); 1330 dmacntrl0 = GETPORT(DMACNTRL0); 1331 if ((rev == 0xFF) && (dmacntrl0 == 0xFF)) 1332 return IRQ_NONE; 1333 1334 if( TESTLO(DMASTAT, INTSTAT) ) 1335 return IRQ_NONE; 1336 1337 /* no more interrupts from the controller, while we're busy. 1338 INTEN is restored by the BH handler */ 1339 CLRBITS(DMACNTRL0, INTEN); 1340 1341 DO_LOCK(flags); 1342 if( HOSTDATA(shpnt)->service==0 ) { 1343 HOSTDATA(shpnt)->service=1; 1344 1345 /* Poke the BH handler */ 1346 INIT_WORK(&aha152x_tq, run); 1347 schedule_work(&aha152x_tq); 1348 } 1349 DO_UNLOCK(flags); 1350 1351 return IRQ_HANDLED; 1352 } 1353 1354 /* 1355 * busfree phase 1356 * - handle completition/disconnection/error of current command 1357 * - start selection for next command (if any) 1358 */ 1359 static void busfree_run(struct Scsi_Host *shpnt) 1360 { 1361 unsigned long flags; 1362 #if defined(AHA152X_STAT) 1363 int action=0; 1364 #endif 1365 1366 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 1367 SETPORT(SXFRCTL0, CH1); 1368 1369 SETPORT(SSTAT1, CLRBUSFREE); 1370 1371 if(CURRENT_SC) { 1372 #if defined(AHA152X_STAT) 1373 action++; 1374 #endif 1375 CURRENT_SC->SCp.phase &= ~syncneg; 1376 1377 if(CURRENT_SC->SCp.phase & completed) { 1378 /* target sent COMMAND COMPLETE */ 1379 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_OK << 16)); 1380 1381 } else if(CURRENT_SC->SCp.phase & aborted) { 1382 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_ABORT << 16)); 1383 1384 } else if(CURRENT_SC->SCp.phase & resetted) { 1385 done(shpnt, (CURRENT_SC->SCp.Status & 0xff) | ((CURRENT_SC->SCp.Message & 0xff) << 8) | (DID_RESET << 16)); 1386 1387 } else if(CURRENT_SC->SCp.phase & disconnected) { 1388 /* target sent DISCONNECT */ 1389 #if defined(AHA152X_STAT) 1390 HOSTDATA(shpnt)->disconnections++; 1391 #endif 1392 append_SC(&DISCONNECTED_SC, CURRENT_SC); 1393 CURRENT_SC->SCp.phase |= 1 << 16; 1394 CURRENT_SC = NULL; 1395 1396 } else { 1397 done(shpnt, DID_ERROR << 16); 1398 } 1399 #if defined(AHA152X_STAT) 1400 } else { 1401 HOSTDATA(shpnt)->busfree_without_old_command++; 1402 #endif 1403 } 1404 1405 DO_LOCK(flags); 1406 1407 if(DONE_SC) { 1408 #if defined(AHA152X_STAT) 1409 action++; 1410 #endif 1411 1412 if(DONE_SC->SCp.phase & check_condition) { 1413 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC; 1414 struct aha152x_scdata *sc = SCDATA(cmd); 1415 1416 scsi_eh_restore_cmnd(cmd, &sc->ses); 1417 1418 cmd->SCp.Status = SAM_STAT_CHECK_CONDITION; 1419 1420 HOSTDATA(shpnt)->commands--; 1421 if (!HOSTDATA(shpnt)->commands) 1422 SETPORT(PORTA, 0); /* turn led off */ 1423 } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) { 1424 #if defined(AHA152X_STAT) 1425 HOSTDATA(shpnt)->busfree_with_check_condition++; 1426 #endif 1427 1428 if(!(DONE_SC->SCp.phase & not_issued)) { 1429 struct aha152x_scdata *sc; 1430 struct scsi_cmnd *ptr = DONE_SC; 1431 DONE_SC=NULL; 1432 1433 sc = SCDATA(ptr); 1434 /* It was allocated in aha152x_internal_queue? */ 1435 BUG_ON(!sc); 1436 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0); 1437 1438 DO_UNLOCK(flags); 1439 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done); 1440 DO_LOCK(flags); 1441 } 1442 } 1443 1444 if(DONE_SC && DONE_SC->scsi_done) { 1445 struct scsi_cmnd *ptr = DONE_SC; 1446 DONE_SC=NULL; 1447 1448 /* turn led off, when no commands are in the driver */ 1449 HOSTDATA(shpnt)->commands--; 1450 if (!HOSTDATA(shpnt)->commands) 1451 SETPORT(PORTA, 0); /* turn led off */ 1452 1453 if(ptr->scsi_done != reset_done) { 1454 kfree(ptr->host_scribble); 1455 ptr->host_scribble=NULL; 1456 } 1457 1458 DO_UNLOCK(flags); 1459 ptr->scsi_done(ptr); 1460 DO_LOCK(flags); 1461 } 1462 1463 DONE_SC=NULL; 1464 #if defined(AHA152X_STAT) 1465 } else { 1466 HOSTDATA(shpnt)->busfree_without_done_command++; 1467 #endif 1468 } 1469 1470 if(ISSUE_SC) 1471 CURRENT_SC = remove_first_SC(&ISSUE_SC); 1472 1473 DO_UNLOCK(flags); 1474 1475 if(CURRENT_SC) { 1476 #if defined(AHA152X_STAT) 1477 action++; 1478 #endif 1479 CURRENT_SC->SCp.phase |= selecting; 1480 1481 /* clear selection timeout */ 1482 SETPORT(SSTAT1, SELTO); 1483 1484 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id); 1485 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER); 1486 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0)); 1487 } else { 1488 #if defined(AHA152X_STAT) 1489 HOSTDATA(shpnt)->busfree_without_new_command++; 1490 #endif 1491 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0); 1492 } 1493 1494 #if defined(AHA152X_STAT) 1495 if(!action) 1496 HOSTDATA(shpnt)->busfree_without_any_action++; 1497 #endif 1498 } 1499 1500 /* 1501 * Selection done (OUT) 1502 * - queue IDENTIFY message and SDTR to selected target for message out 1503 * (ATN asserted automagically via ENAUTOATNO in busfree()) 1504 */ 1505 static void seldo_run(struct Scsi_Host *shpnt) 1506 { 1507 SETPORT(SCSISIG, 0); 1508 SETPORT(SSTAT1, CLRBUSFREE); 1509 SETPORT(SSTAT1, CLRPHASECHG); 1510 1511 CURRENT_SC->SCp.phase &= ~(selecting|not_issued); 1512 1513 SETPORT(SCSISEQ, 0); 1514 1515 if (TESTLO(SSTAT0, SELDO)) { 1516 scmd_printk(KERN_ERR, CURRENT_SC, 1517 "aha152x: passing bus free condition\n"); 1518 done(shpnt, DID_NO_CONNECT << 16); 1519 return; 1520 } 1521 1522 SETPORT(SSTAT0, CLRSELDO); 1523 1524 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); 1525 1526 if (CURRENT_SC->SCp.phase & aborting) { 1527 ADDMSGO(ABORT); 1528 } else if (CURRENT_SC->SCp.phase & resetting) { 1529 ADDMSGO(BUS_DEVICE_RESET); 1530 } else if (SYNCNEG==0 && SYNCHRONOUS) { 1531 CURRENT_SC->SCp.phase |= syncneg; 1532 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8); 1533 SYNCNEG=1; /* negotiation in progress */ 1534 } 1535 1536 SETRATE(SYNCRATE); 1537 } 1538 1539 /* 1540 * Selection timeout 1541 * - return command to mid-level with failure cause 1542 * 1543 */ 1544 static void selto_run(struct Scsi_Host *shpnt) 1545 { 1546 SETPORT(SCSISEQ, 0); 1547 SETPORT(SSTAT1, CLRSELTIMO); 1548 1549 if (!CURRENT_SC) 1550 return; 1551 1552 CURRENT_SC->SCp.phase &= ~selecting; 1553 1554 if (CURRENT_SC->SCp.phase & aborted) 1555 done(shpnt, DID_ABORT << 16); 1556 else if (TESTLO(SSTAT0, SELINGO)) 1557 done(shpnt, DID_BUS_BUSY << 16); 1558 else 1559 /* ARBITRATION won, but SELECTION failed */ 1560 done(shpnt, DID_NO_CONNECT << 16); 1561 } 1562 1563 /* 1564 * Selection in done 1565 * - put current command back to issue queue 1566 * (reconnection of a disconnected nexus instead 1567 * of successful selection out) 1568 * 1569 */ 1570 static void seldi_run(struct Scsi_Host *shpnt) 1571 { 1572 int selid; 1573 int target; 1574 unsigned long flags; 1575 1576 SETPORT(SCSISIG, 0); 1577 SETPORT(SSTAT0, CLRSELDI); 1578 SETPORT(SSTAT1, CLRBUSFREE); 1579 SETPORT(SSTAT1, CLRPHASECHG); 1580 1581 if(CURRENT_SC) { 1582 if(!(CURRENT_SC->SCp.phase & not_issued)) 1583 scmd_printk(KERN_ERR, CURRENT_SC, 1584 "command should not have been issued yet\n"); 1585 1586 DO_LOCK(flags); 1587 append_SC(&ISSUE_SC, CURRENT_SC); 1588 DO_UNLOCK(flags); 1589 1590 CURRENT_SC = NULL; 1591 } 1592 1593 if (!DISCONNECTED_SC) 1594 return; 1595 1596 RECONN_TARGET=-1; 1597 1598 selid = GETPORT(SELID) & ~(1 << shpnt->this_id); 1599 1600 if (selid==0) { 1601 shost_printk(KERN_INFO, shpnt, 1602 "target id unknown (%02x)\n", selid); 1603 return; 1604 } 1605 1606 for(target=7; !(selid & (1 << target)); target--) 1607 ; 1608 1609 if(selid & ~(1 << target)) { 1610 shost_printk(KERN_INFO, shpnt, 1611 "multiple targets reconnected (%02x)\n", selid); 1612 } 1613 1614 1615 SETPORT(SCSIID, (shpnt->this_id << OID_) | target); 1616 SETPORT(SCSISEQ, 0); 1617 1618 SETRATE(HOSTDATA(shpnt)->syncrate[target]); 1619 1620 RECONN_TARGET=target; 1621 } 1622 1623 /* 1624 * message in phase 1625 * - handle initial message after reconnection to identify 1626 * reconnecting nexus 1627 * - queue command on DISCONNECTED_SC on DISCONNECT message 1628 * - set completed flag on COMMAND COMPLETE 1629 * (other completition code moved to busfree_run) 1630 * - handle response to SDTR 1631 * - clear synchronous transfer agreements on BUS RESET 1632 * 1633 * FIXME: what about SAVE POINTERS, RESTORE POINTERS? 1634 * 1635 */ 1636 static void msgi_run(struct Scsi_Host *shpnt) 1637 { 1638 for(;;) { 1639 int sstat1 = GETPORT(SSTAT1); 1640 1641 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT)) 1642 return; 1643 1644 if (TESTLO(SSTAT0, SPIORDY)) 1645 return; 1646 1647 ADDMSGI(GETPORT(SCSIDAT)); 1648 1649 if(!CURRENT_SC) { 1650 if(LASTSTATE!=seldi) { 1651 shost_printk(KERN_ERR, shpnt, 1652 "message in w/o current command" 1653 " not after reselection\n"); 1654 } 1655 1656 /* 1657 * Handle reselection 1658 */ 1659 if(!(MSGI(0) & IDENTIFY_BASE)) { 1660 shost_printk(KERN_ERR, shpnt, 1661 "target didn't identify after reselection\n"); 1662 continue; 1663 } 1664 1665 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f); 1666 1667 if (!CURRENT_SC) { 1668 show_queues(shpnt); 1669 shost_printk(KERN_ERR, shpnt, 1670 "no disconnected command" 1671 " for target %d/%d\n", 1672 RECONN_TARGET, MSGI(0) & 0x3f); 1673 continue; 1674 } 1675 1676 CURRENT_SC->SCp.Message = MSGI(0); 1677 CURRENT_SC->SCp.phase &= ~disconnected; 1678 1679 MSGILEN=0; 1680 1681 /* next message if any */ 1682 continue; 1683 } 1684 1685 CURRENT_SC->SCp.Message = MSGI(0); 1686 1687 switch (MSGI(0)) { 1688 case DISCONNECT: 1689 if (!RECONNECT) 1690 scmd_printk(KERN_WARNING, CURRENT_SC, 1691 "target was not allowed to disconnect\n"); 1692 1693 CURRENT_SC->SCp.phase |= disconnected; 1694 break; 1695 1696 case COMMAND_COMPLETE: 1697 CURRENT_SC->SCp.phase |= completed; 1698 break; 1699 1700 case MESSAGE_REJECT: 1701 if (SYNCNEG==1) { 1702 scmd_printk(KERN_INFO, CURRENT_SC, 1703 "Synchronous Data Transfer Request" 1704 " was rejected\n"); 1705 SYNCNEG=2; /* negotiation completed */ 1706 } else 1707 scmd_printk(KERN_INFO, CURRENT_SC, 1708 "inbound message (MESSAGE REJECT)\n"); 1709 break; 1710 1711 case SAVE_POINTERS: 1712 break; 1713 1714 case RESTORE_POINTERS: 1715 break; 1716 1717 case EXTENDED_MESSAGE: 1718 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) { 1719 /* not yet completed */ 1720 continue; 1721 } 1722 1723 switch (MSGI(2)) { 1724 case EXTENDED_SDTR: 1725 { 1726 long ticks; 1727 1728 if (MSGI(1) != 3) { 1729 scmd_printk(KERN_ERR, CURRENT_SC, 1730 "SDTR message length!=3\n"); 1731 break; 1732 } 1733 1734 if (!HOSTDATA(shpnt)->synchronous) 1735 break; 1736 1737 printk(INFO_LEAD, CMDINFO(CURRENT_SC)); 1738 spi_print_msg(&MSGI(0)); 1739 printk("\n"); 1740 1741 ticks = (MSGI(3) * 4 + 49) / 50; 1742 1743 if (syncneg) { 1744 /* negotiation in progress */ 1745 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) { 1746 ADDMSGO(MESSAGE_REJECT); 1747 scmd_printk(KERN_INFO, 1748 CURRENT_SC, 1749 "received Synchronous Data Transfer Request invalid - rejected\n"); 1750 break; 1751 } 1752 1753 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); 1754 } else if (ticks <= 9 && MSGI(4) >= 1) { 1755 ADDMSGO(EXTENDED_MESSAGE); 1756 ADDMSGO(3); 1757 ADDMSGO(EXTENDED_SDTR); 1758 if (ticks < 4) { 1759 ticks = 4; 1760 ADDMSGO(50); 1761 } else 1762 ADDMSGO(MSGI(3)); 1763 1764 if (MSGI(4) > 8) 1765 MSGI(4) = 8; 1766 1767 ADDMSGO(MSGI(4)); 1768 1769 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); 1770 } else { 1771 /* requested SDTR is too slow, do it asynchronously */ 1772 scmd_printk(KERN_INFO, 1773 CURRENT_SC, 1774 "Synchronous Data Transfer Request too slow - Rejecting\n"); 1775 ADDMSGO(MESSAGE_REJECT); 1776 } 1777 1778 /* negotiation completed */ 1779 SYNCNEG=2; 1780 SETRATE(SYNCRATE); 1781 } 1782 break; 1783 1784 case BUS_DEVICE_RESET: 1785 { 1786 int i; 1787 1788 for(i=0; i<8; i++) { 1789 HOSTDATA(shpnt)->syncrate[i]=0; 1790 HOSTDATA(shpnt)->syncneg[i]=0; 1791 } 1792 1793 } 1794 break; 1795 1796 case EXTENDED_MODIFY_DATA_POINTER: 1797 case EXTENDED_EXTENDED_IDENTIFY: 1798 case EXTENDED_WDTR: 1799 default: 1800 ADDMSGO(MESSAGE_REJECT); 1801 break; 1802 } 1803 break; 1804 } 1805 1806 MSGILEN=0; 1807 } 1808 } 1809 1810 static void msgi_end(struct Scsi_Host *shpnt) 1811 { 1812 if(MSGILEN>0) 1813 scmd_printk(KERN_WARNING, CURRENT_SC, 1814 "target left before message completed (%d)\n", 1815 MSGILEN); 1816 1817 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) 1818 SETPORT(SCSISIG, P_MSGI | SIG_ATNO); 1819 } 1820 1821 /* 1822 * message out phase 1823 * 1824 */ 1825 static void msgo_init(struct Scsi_Host *shpnt) 1826 { 1827 if(MSGOLEN==0) { 1828 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) { 1829 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); 1830 } else { 1831 scmd_printk(KERN_INFO, CURRENT_SC, 1832 "unexpected MESSAGE OUT phase; rejecting\n"); 1833 ADDMSGO(MESSAGE_REJECT); 1834 } 1835 } 1836 1837 } 1838 1839 /* 1840 * message out phase 1841 * 1842 */ 1843 static void msgo_run(struct Scsi_Host *shpnt) 1844 { 1845 while(MSGO_I<MSGOLEN) { 1846 if (TESTLO(SSTAT0, SPIORDY)) 1847 return; 1848 1849 if (MSGO_I==MSGOLEN-1) { 1850 /* Leave MESSAGE OUT after transfer */ 1851 SETPORT(SSTAT1, CLRATNO); 1852 } 1853 1854 1855 if (MSGO(MSGO_I) & IDENTIFY_BASE) 1856 CURRENT_SC->SCp.phase |= identified; 1857 1858 if (MSGO(MSGO_I)==ABORT) 1859 CURRENT_SC->SCp.phase |= aborted; 1860 1861 if (MSGO(MSGO_I)==BUS_DEVICE_RESET) 1862 CURRENT_SC->SCp.phase |= resetted; 1863 1864 SETPORT(SCSIDAT, MSGO(MSGO_I++)); 1865 } 1866 } 1867 1868 static void msgo_end(struct Scsi_Host *shpnt) 1869 { 1870 if(MSGO_I<MSGOLEN) { 1871 scmd_printk(KERN_ERR, CURRENT_SC, 1872 "message sent incompletely (%d/%d)\n", 1873 MSGO_I, MSGOLEN); 1874 if(SYNCNEG==1) { 1875 scmd_printk(KERN_INFO, CURRENT_SC, 1876 "Synchronous Data Transfer Request was rejected\n"); 1877 SYNCNEG=2; 1878 } 1879 } 1880 1881 MSGO_I = 0; 1882 MSGOLEN = 0; 1883 } 1884 1885 /* 1886 * command phase 1887 * 1888 */ 1889 static void cmd_init(struct Scsi_Host *shpnt) 1890 { 1891 if (CURRENT_SC->SCp.sent_command) { 1892 scmd_printk(KERN_ERR, CURRENT_SC, 1893 "command already sent\n"); 1894 done(shpnt, DID_ERROR << 16); 1895 return; 1896 } 1897 1898 CMD_I=0; 1899 } 1900 1901 /* 1902 * command phase 1903 * 1904 */ 1905 static void cmd_run(struct Scsi_Host *shpnt) 1906 { 1907 while(CMD_I<CURRENT_SC->cmd_len) { 1908 if (TESTLO(SSTAT0, SPIORDY)) 1909 return; 1910 1911 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]); 1912 } 1913 } 1914 1915 static void cmd_end(struct Scsi_Host *shpnt) 1916 { 1917 if(CMD_I<CURRENT_SC->cmd_len) 1918 scmd_printk(KERN_ERR, CURRENT_SC, 1919 "command sent incompletely (%d/%d)\n", 1920 CMD_I, CURRENT_SC->cmd_len); 1921 else 1922 CURRENT_SC->SCp.sent_command++; 1923 } 1924 1925 /* 1926 * status phase 1927 * 1928 */ 1929 static void status_run(struct Scsi_Host *shpnt) 1930 { 1931 if (TESTLO(SSTAT0, SPIORDY)) 1932 return; 1933 1934 CURRENT_SC->SCp.Status = GETPORT(SCSIDAT); 1935 1936 } 1937 1938 /* 1939 * data in phase 1940 * 1941 */ 1942 static void datai_init(struct Scsi_Host *shpnt) 1943 { 1944 SETPORT(DMACNTRL0, RSTFIFO); 1945 SETPORT(DMACNTRL0, RSTFIFO|ENDMA); 1946 1947 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 1948 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); 1949 1950 SETPORT(SIMODE0, 0); 1951 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE); 1952 1953 DATA_LEN=0; 1954 } 1955 1956 static void datai_run(struct Scsi_Host *shpnt) 1957 { 1958 unsigned long the_time; 1959 int fifodata, data_count; 1960 1961 /* 1962 * loop while the phase persists or the fifos are not empty 1963 * 1964 */ 1965 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) { 1966 /* FIXME: maybe this should be done by setting up 1967 * STCNT to trigger ENSWRAP interrupt, instead of 1968 * polling for DFIFOFULL 1969 */ 1970 the_time=jiffies + 100*HZ; 1971 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time)) 1972 barrier(); 1973 1974 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) { 1975 scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n"); 1976 break; 1977 } 1978 1979 if(TESTHI(DMASTAT, DFIFOFULL)) { 1980 fifodata = 128; 1981 } else { 1982 the_time=jiffies + 100*HZ; 1983 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time)) 1984 barrier(); 1985 1986 if(TESTLO(SSTAT2, SEMPTY)) { 1987 scmd_printk(KERN_ERR, CURRENT_SC, 1988 "datai sempty timeout"); 1989 break; 1990 } 1991 1992 fifodata = GETPORT(FIFOSTAT); 1993 } 1994 1995 if(CURRENT_SC->SCp.this_residual>0) { 1996 while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) { 1997 data_count = fifodata > CURRENT_SC->SCp.this_residual ? 1998 CURRENT_SC->SCp.this_residual : 1999 fifodata; 2000 fifodata -= data_count; 2001 2002 if (data_count & 1) { 2003 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2004 *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT); 2005 CURRENT_SC->SCp.this_residual--; 2006 DATA_LEN++; 2007 SETPORT(DMACNTRL0, ENDMA); 2008 } 2009 2010 if (data_count > 1) { 2011 data_count >>= 1; 2012 insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); 2013 CURRENT_SC->SCp.ptr += 2 * data_count; 2014 CURRENT_SC->SCp.this_residual -= 2 * data_count; 2015 DATA_LEN += 2 * data_count; 2016 } 2017 2018 if (CURRENT_SC->SCp.this_residual == 0 && 2019 !sg_is_last(CURRENT_SC->SCp.buffer)) { 2020 /* advance to next buffer */ 2021 CURRENT_SC->SCp.buffer = sg_next(CURRENT_SC->SCp.buffer); 2022 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer); 2023 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; 2024 } 2025 } 2026 } else if (fifodata > 0) { 2027 scmd_printk(KERN_ERR, CURRENT_SC, 2028 "no buffers left for %d(%d) bytes" 2029 " (data overrun!?)\n", 2030 fifodata, GETPORT(FIFOSTAT)); 2031 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2032 while(fifodata>0) { 2033 int data; 2034 data=GETPORT(DATAPORT); 2035 fifodata--; 2036 DATA_LEN++; 2037 } 2038 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2039 } 2040 } 2041 2042 if(TESTLO(DMASTAT, INTSTAT) || 2043 TESTLO(DMASTAT, DFIFOEMP) || 2044 TESTLO(SSTAT2, SEMPTY) || 2045 GETPORT(FIFOSTAT)>0) { 2046 /* 2047 * something went wrong, if there's something left in the fifos 2048 * or the phase didn't change 2049 */ 2050 scmd_printk(KERN_ERR, CURRENT_SC, 2051 "fifos should be empty and phase should have changed\n"); 2052 } 2053 2054 if(DATA_LEN!=GETSTCNT()) { 2055 scmd_printk(KERN_ERR, CURRENT_SC, 2056 "manual transfer count differs from automatic " 2057 "(count=%d;stcnt=%d;diff=%d;fifostat=%d)", 2058 DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, 2059 GETPORT(FIFOSTAT)); 2060 mdelay(10000); 2061 } 2062 } 2063 2064 static void datai_end(struct Scsi_Host *shpnt) 2065 { 2066 CMD_INC_RESID(CURRENT_SC, -GETSTCNT()); 2067 2068 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 2069 SETPORT(DMACNTRL0, 0); 2070 } 2071 2072 /* 2073 * data out phase 2074 * 2075 */ 2076 static void datao_init(struct Scsi_Host *shpnt) 2077 { 2078 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO); 2079 SETPORT(DMACNTRL0, WRITE_READ | ENDMA); 2080 2081 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 2082 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); 2083 2084 SETPORT(SIMODE0, 0); 2085 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE ); 2086 2087 DATA_LEN = scsi_get_resid(CURRENT_SC); 2088 } 2089 2090 static void datao_run(struct Scsi_Host *shpnt) 2091 { 2092 unsigned long the_time; 2093 int data_count; 2094 2095 /* until phase changes or all data sent */ 2096 while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) { 2097 data_count = 128; 2098 if(data_count > CURRENT_SC->SCp.this_residual) 2099 data_count=CURRENT_SC->SCp.this_residual; 2100 2101 if(TESTLO(DMASTAT, DFIFOEMP)) { 2102 scmd_printk(KERN_ERR, CURRENT_SC, 2103 "datao fifo not empty (%d)", 2104 GETPORT(FIFOSTAT)); 2105 break; 2106 } 2107 2108 if(data_count & 1) { 2109 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT); 2110 SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++); 2111 CURRENT_SC->SCp.this_residual--; 2112 CMD_INC_RESID(CURRENT_SC, -1); 2113 SETPORT(DMACNTRL0,WRITE_READ|ENDMA); 2114 } 2115 2116 if(data_count > 1) { 2117 data_count >>= 1; 2118 outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); 2119 CURRENT_SC->SCp.ptr += 2 * data_count; 2120 CURRENT_SC->SCp.this_residual -= 2 * data_count; 2121 CMD_INC_RESID(CURRENT_SC, -2 * data_count); 2122 } 2123 2124 if (CURRENT_SC->SCp.this_residual == 0 && 2125 !sg_is_last(CURRENT_SC->SCp.buffer)) { 2126 /* advance to next buffer */ 2127 CURRENT_SC->SCp.buffer = sg_next(CURRENT_SC->SCp.buffer); 2128 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer); 2129 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; 2130 } 2131 2132 the_time=jiffies + 100*HZ; 2133 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time)) 2134 barrier(); 2135 2136 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) { 2137 scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n"); 2138 break; 2139 } 2140 } 2141 } 2142 2143 static void datao_end(struct Scsi_Host *shpnt) 2144 { 2145 if(TESTLO(DMASTAT, DFIFOEMP)) { 2146 u32 datao_cnt = GETSTCNT(); 2147 int datao_out = DATA_LEN - scsi_get_resid(CURRENT_SC); 2148 int done; 2149 struct scatterlist *sg = scsi_sglist(CURRENT_SC); 2150 2151 CMD_INC_RESID(CURRENT_SC, datao_out - datao_cnt); 2152 2153 done = scsi_bufflen(CURRENT_SC) - scsi_get_resid(CURRENT_SC); 2154 /* Locate the first SG entry not yet sent */ 2155 while (done > 0 && !sg_is_last(sg)) { 2156 if (done < sg->length) 2157 break; 2158 done -= sg->length; 2159 sg = sg_next(sg); 2160 } 2161 2162 CURRENT_SC->SCp.buffer = sg; 2163 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) + done; 2164 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length - 2165 done; 2166 } 2167 2168 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 2169 SETPORT(SXFRCTL0, CH1); 2170 2171 SETPORT(DMACNTRL0, 0); 2172 } 2173 2174 /* 2175 * figure out what state we're in 2176 * 2177 */ 2178 static int update_state(struct Scsi_Host *shpnt) 2179 { 2180 int dataphase=0; 2181 unsigned int stat0 = GETPORT(SSTAT0); 2182 unsigned int stat1 = GETPORT(SSTAT1); 2183 2184 PREVSTATE = STATE; 2185 STATE=unknown; 2186 2187 if(stat1 & SCSIRSTI) { 2188 STATE=rsti; 2189 SETPORT(SCSISEQ,0); 2190 SETPORT(SSTAT1,SCSIRSTI); 2191 } else if (stat0 & SELDI && PREVSTATE == busfree) { 2192 STATE=seldi; 2193 } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) { 2194 STATE=seldo; 2195 } else if(stat1 & SELTO) { 2196 STATE=selto; 2197 } else if(stat1 & BUSFREE) { 2198 STATE=busfree; 2199 SETPORT(SSTAT1,BUSFREE); 2200 } else if(stat1 & SCSIPERR) { 2201 STATE=parerr; 2202 SETPORT(SSTAT1,SCSIPERR); 2203 } else if(stat1 & REQINIT) { 2204 switch(GETPORT(SCSISIG) & P_MASK) { 2205 case P_MSGI: STATE=msgi; break; 2206 case P_MSGO: STATE=msgo; break; 2207 case P_DATAO: STATE=datao; break; 2208 case P_DATAI: STATE=datai; break; 2209 case P_STATUS: STATE=status; break; 2210 case P_CMD: STATE=cmd; break; 2211 } 2212 dataphase=1; 2213 } 2214 2215 if((stat0 & SELDI) && STATE!=seldi && !dataphase) { 2216 scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?"); 2217 } 2218 2219 if(STATE!=PREVSTATE) { 2220 LASTSTATE=PREVSTATE; 2221 } 2222 2223 return dataphase; 2224 } 2225 2226 /* 2227 * handle parity error 2228 * 2229 * FIXME: in which phase? 2230 * 2231 */ 2232 static void parerr_run(struct Scsi_Host *shpnt) 2233 { 2234 scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n"); 2235 done(shpnt, DID_PARITY << 16); 2236 } 2237 2238 /* 2239 * handle reset in 2240 * 2241 */ 2242 static void rsti_run(struct Scsi_Host *shpnt) 2243 { 2244 struct scsi_cmnd *ptr; 2245 2246 shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n"); 2247 2248 ptr=DISCONNECTED_SC; 2249 while(ptr) { 2250 struct scsi_cmnd *next = SCNEXT(ptr); 2251 2252 if (!ptr->device->soft_reset) { 2253 remove_SC(&DISCONNECTED_SC, ptr); 2254 2255 kfree(ptr->host_scribble); 2256 ptr->host_scribble=NULL; 2257 2258 ptr->result = DID_RESET << 16; 2259 ptr->scsi_done(ptr); 2260 } 2261 2262 ptr = next; 2263 } 2264 2265 if(CURRENT_SC && !CURRENT_SC->device->soft_reset) 2266 done(shpnt, DID_RESET << 16 ); 2267 } 2268 2269 2270 /* 2271 * bottom-half handler 2272 * 2273 */ 2274 static void is_complete(struct Scsi_Host *shpnt) 2275 { 2276 int dataphase; 2277 unsigned long flags; 2278 int pending; 2279 2280 if(!shpnt) 2281 return; 2282 2283 DO_LOCK(flags); 2284 2285 if( HOSTDATA(shpnt)->service==0 ) { 2286 DO_UNLOCK(flags); 2287 return; 2288 } 2289 2290 HOSTDATA(shpnt)->service = 0; 2291 2292 if(HOSTDATA(shpnt)->in_intr) { 2293 DO_UNLOCK(flags); 2294 /* aha152x_error never returns.. */ 2295 aha152x_error(shpnt, "bottom-half already running!?"); 2296 } 2297 HOSTDATA(shpnt)->in_intr++; 2298 2299 /* 2300 * loop while there are interrupt conditions pending 2301 * 2302 */ 2303 do { 2304 unsigned long start = jiffies; 2305 DO_UNLOCK(flags); 2306 2307 dataphase=update_state(shpnt); 2308 2309 /* 2310 * end previous state 2311 * 2312 */ 2313 if(PREVSTATE!=STATE && states[PREVSTATE].end) 2314 states[PREVSTATE].end(shpnt); 2315 2316 /* 2317 * disable SPIO mode if previous phase used it 2318 * and this one doesn't 2319 * 2320 */ 2321 if(states[PREVSTATE].spio && !states[STATE].spio) { 2322 SETPORT(SXFRCTL0, CH1); 2323 SETPORT(DMACNTRL0, 0); 2324 if(CURRENT_SC) 2325 CURRENT_SC->SCp.phase &= ~spiordy; 2326 } 2327 2328 /* 2329 * accept current dataphase phase 2330 * 2331 */ 2332 if(dataphase) { 2333 SETPORT(SSTAT0, REQINIT); 2334 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK); 2335 SETPORT(SSTAT1, PHASECHG); 2336 } 2337 2338 /* 2339 * enable SPIO mode if previous didn't use it 2340 * and this one does 2341 * 2342 */ 2343 if(!states[PREVSTATE].spio && states[STATE].spio) { 2344 SETPORT(DMACNTRL0, 0); 2345 SETPORT(SXFRCTL0, CH1|SPIOEN); 2346 if(CURRENT_SC) 2347 CURRENT_SC->SCp.phase |= spiordy; 2348 } 2349 2350 /* 2351 * initialize for new state 2352 * 2353 */ 2354 if(PREVSTATE!=STATE && states[STATE].init) 2355 states[STATE].init(shpnt); 2356 2357 /* 2358 * handle current state 2359 * 2360 */ 2361 if(states[STATE].run) 2362 states[STATE].run(shpnt); 2363 else 2364 scmd_printk(KERN_ERR, CURRENT_SC, 2365 "unexpected state (%x)\n", STATE); 2366 2367 /* 2368 * setup controller to interrupt on 2369 * the next expected condition and 2370 * loop if it's already there 2371 * 2372 */ 2373 DO_LOCK(flags); 2374 pending=setup_expected_interrupts(shpnt); 2375 #if defined(AHA152X_STAT) 2376 HOSTDATA(shpnt)->count[STATE]++; 2377 if(PREVSTATE!=STATE) 2378 HOSTDATA(shpnt)->count_trans[STATE]++; 2379 HOSTDATA(shpnt)->time[STATE] += jiffies-start; 2380 #endif 2381 2382 } while(pending); 2383 2384 /* 2385 * enable interrupts and leave bottom-half 2386 * 2387 */ 2388 HOSTDATA(shpnt)->in_intr--; 2389 SETBITS(DMACNTRL0, INTEN); 2390 DO_UNLOCK(flags); 2391 } 2392 2393 2394 /* 2395 * Dump the current driver status and panic 2396 */ 2397 static void aha152x_error(struct Scsi_Host *shpnt, char *msg) 2398 { 2399 shost_printk(KERN_EMERG, shpnt, "%s\n", msg); 2400 show_queues(shpnt); 2401 panic("aha152x panic\n"); 2402 } 2403 2404 /* 2405 * display enabled interrupts 2406 */ 2407 static void disp_enintr(struct Scsi_Host *shpnt) 2408 { 2409 int s0, s1; 2410 2411 s0 = GETPORT(SIMODE0); 2412 s1 = GETPORT(SIMODE1); 2413 2414 shost_printk(KERN_DEBUG, shpnt, 2415 "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n", 2416 (s0 & ENSELDO) ? "ENSELDO " : "", 2417 (s0 & ENSELDI) ? "ENSELDI " : "", 2418 (s0 & ENSELINGO) ? "ENSELINGO " : "", 2419 (s0 & ENSWRAP) ? "ENSWRAP " : "", 2420 (s0 & ENSDONE) ? "ENSDONE " : "", 2421 (s0 & ENSPIORDY) ? "ENSPIORDY " : "", 2422 (s0 & ENDMADONE) ? "ENDMADONE " : "", 2423 (s1 & ENSELTIMO) ? "ENSELTIMO " : "", 2424 (s1 & ENATNTARG) ? "ENATNTARG " : "", 2425 (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "", 2426 (s1 & ENBUSFREE) ? "ENBUSFREE " : "", 2427 (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "", 2428 (s1 & ENPHASECHG) ? "ENPHASECHG " : "", 2429 (s1 & ENREQINIT) ? "ENREQINIT " : ""); 2430 } 2431 2432 /* 2433 * Show the command data of a command 2434 */ 2435 static void show_command(struct scsi_cmnd *ptr) 2436 { 2437 scsi_print_command(ptr); 2438 scmd_printk(KERN_DEBUG, ptr, 2439 "request_bufflen=%d; resid=%d; " 2440 "phase |%s%s%s%s%s%s%s%s%s; next=0x%p", 2441 scsi_bufflen(ptr), scsi_get_resid(ptr), 2442 (ptr->SCp.phase & not_issued) ? "not issued|" : "", 2443 (ptr->SCp.phase & selecting) ? "selecting|" : "", 2444 (ptr->SCp.phase & identified) ? "identified|" : "", 2445 (ptr->SCp.phase & disconnected) ? "disconnected|" : "", 2446 (ptr->SCp.phase & completed) ? "completed|" : "", 2447 (ptr->SCp.phase & spiordy) ? "spiordy|" : "", 2448 (ptr->SCp.phase & syncneg) ? "syncneg|" : "", 2449 (ptr->SCp.phase & aborted) ? "aborted|" : "", 2450 (ptr->SCp.phase & resetted) ? "resetted|" : "", 2451 (SCDATA(ptr)) ? SCNEXT(ptr) : NULL); 2452 } 2453 2454 /* 2455 * Dump the queued data 2456 */ 2457 static void show_queues(struct Scsi_Host *shpnt) 2458 { 2459 struct scsi_cmnd *ptr; 2460 unsigned long flags; 2461 2462 DO_LOCK(flags); 2463 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n"); 2464 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) 2465 show_command(ptr); 2466 DO_UNLOCK(flags); 2467 2468 printk(KERN_DEBUG "current_SC:\n"); 2469 if (CURRENT_SC) 2470 show_command(CURRENT_SC); 2471 else 2472 printk(KERN_DEBUG "none\n"); 2473 2474 printk(KERN_DEBUG "disconnected_SC:\n"); 2475 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL) 2476 show_command(ptr); 2477 2478 disp_enintr(shpnt); 2479 } 2480 2481 static void get_command(struct seq_file *m, struct scsi_cmnd * ptr) 2482 { 2483 int i; 2484 2485 seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ", 2486 ptr, ptr->device->id, (u8)ptr->device->lun); 2487 2488 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++) 2489 seq_printf(m, "0x%02x ", ptr->cmnd[i]); 2490 2491 seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |", 2492 scsi_get_resid(ptr), ptr->SCp.this_residual, 2493 sg_nents(ptr->SCp.buffer) - 1); 2494 2495 if (ptr->SCp.phase & not_issued) 2496 seq_puts(m, "not issued|"); 2497 if (ptr->SCp.phase & selecting) 2498 seq_puts(m, "selecting|"); 2499 if (ptr->SCp.phase & disconnected) 2500 seq_puts(m, "disconnected|"); 2501 if (ptr->SCp.phase & aborted) 2502 seq_puts(m, "aborted|"); 2503 if (ptr->SCp.phase & identified) 2504 seq_puts(m, "identified|"); 2505 if (ptr->SCp.phase & completed) 2506 seq_puts(m, "completed|"); 2507 if (ptr->SCp.phase & spiordy) 2508 seq_puts(m, "spiordy|"); 2509 if (ptr->SCp.phase & syncneg) 2510 seq_puts(m, "syncneg|"); 2511 seq_printf(m, "; next=0x%p\n", SCNEXT(ptr)); 2512 } 2513 2514 static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt) 2515 { 2516 int s; 2517 2518 seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name); 2519 2520 s = GETPORT(SCSISEQ); 2521 seq_puts(m, "SCSISEQ( "); 2522 if (s & TEMODEO) 2523 seq_puts(m, "TARGET MODE "); 2524 if (s & ENSELO) 2525 seq_puts(m, "SELO "); 2526 if (s & ENSELI) 2527 seq_puts(m, "SELI "); 2528 if (s & ENRESELI) 2529 seq_puts(m, "RESELI "); 2530 if (s & ENAUTOATNO) 2531 seq_puts(m, "AUTOATNO "); 2532 if (s & ENAUTOATNI) 2533 seq_puts(m, "AUTOATNI "); 2534 if (s & ENAUTOATNP) 2535 seq_puts(m, "AUTOATNP "); 2536 if (s & SCSIRSTO) 2537 seq_puts(m, "SCSIRSTO "); 2538 seq_puts(m, ");"); 2539 2540 seq_puts(m, " SCSISIG("); 2541 s = GETPORT(SCSISIG); 2542 switch (s & P_MASK) { 2543 case P_DATAO: 2544 seq_puts(m, "DATA OUT"); 2545 break; 2546 case P_DATAI: 2547 seq_puts(m, "DATA IN"); 2548 break; 2549 case P_CMD: 2550 seq_puts(m, "COMMAND"); 2551 break; 2552 case P_STATUS: 2553 seq_puts(m, "STATUS"); 2554 break; 2555 case P_MSGO: 2556 seq_puts(m, "MESSAGE OUT"); 2557 break; 2558 case P_MSGI: 2559 seq_puts(m, "MESSAGE IN"); 2560 break; 2561 default: 2562 seq_puts(m, "*invalid*"); 2563 break; 2564 } 2565 2566 seq_puts(m, "); "); 2567 2568 seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); 2569 2570 seq_puts(m, "SSTAT( "); 2571 s = GETPORT(SSTAT0); 2572 if (s & TARGET) 2573 seq_puts(m, "TARGET "); 2574 if (s & SELDO) 2575 seq_puts(m, "SELDO "); 2576 if (s & SELDI) 2577 seq_puts(m, "SELDI "); 2578 if (s & SELINGO) 2579 seq_puts(m, "SELINGO "); 2580 if (s & SWRAP) 2581 seq_puts(m, "SWRAP "); 2582 if (s & SDONE) 2583 seq_puts(m, "SDONE "); 2584 if (s & SPIORDY) 2585 seq_puts(m, "SPIORDY "); 2586 if (s & DMADONE) 2587 seq_puts(m, "DMADONE "); 2588 2589 s = GETPORT(SSTAT1); 2590 if (s & SELTO) 2591 seq_puts(m, "SELTO "); 2592 if (s & ATNTARG) 2593 seq_puts(m, "ATNTARG "); 2594 if (s & SCSIRSTI) 2595 seq_puts(m, "SCSIRSTI "); 2596 if (s & PHASEMIS) 2597 seq_puts(m, "PHASEMIS "); 2598 if (s & BUSFREE) 2599 seq_puts(m, "BUSFREE "); 2600 if (s & SCSIPERR) 2601 seq_puts(m, "SCSIPERR "); 2602 if (s & PHASECHG) 2603 seq_puts(m, "PHASECHG "); 2604 if (s & REQINIT) 2605 seq_puts(m, "REQINIT "); 2606 seq_puts(m, "); "); 2607 2608 2609 seq_puts(m, "SSTAT( "); 2610 2611 s = GETPORT(SSTAT0) & GETPORT(SIMODE0); 2612 2613 if (s & TARGET) 2614 seq_puts(m, "TARGET "); 2615 if (s & SELDO) 2616 seq_puts(m, "SELDO "); 2617 if (s & SELDI) 2618 seq_puts(m, "SELDI "); 2619 if (s & SELINGO) 2620 seq_puts(m, "SELINGO "); 2621 if (s & SWRAP) 2622 seq_puts(m, "SWRAP "); 2623 if (s & SDONE) 2624 seq_puts(m, "SDONE "); 2625 if (s & SPIORDY) 2626 seq_puts(m, "SPIORDY "); 2627 if (s & DMADONE) 2628 seq_puts(m, "DMADONE "); 2629 2630 s = GETPORT(SSTAT1) & GETPORT(SIMODE1); 2631 2632 if (s & SELTO) 2633 seq_puts(m, "SELTO "); 2634 if (s & ATNTARG) 2635 seq_puts(m, "ATNTARG "); 2636 if (s & SCSIRSTI) 2637 seq_puts(m, "SCSIRSTI "); 2638 if (s & PHASEMIS) 2639 seq_puts(m, "PHASEMIS "); 2640 if (s & BUSFREE) 2641 seq_puts(m, "BUSFREE "); 2642 if (s & SCSIPERR) 2643 seq_puts(m, "SCSIPERR "); 2644 if (s & PHASECHG) 2645 seq_puts(m, "PHASECHG "); 2646 if (s & REQINIT) 2647 seq_puts(m, "REQINIT "); 2648 seq_puts(m, "); "); 2649 2650 seq_puts(m, "SXFRCTL0( "); 2651 2652 s = GETPORT(SXFRCTL0); 2653 if (s & SCSIEN) 2654 seq_puts(m, "SCSIEN "); 2655 if (s & DMAEN) 2656 seq_puts(m, "DMAEN "); 2657 if (s & CH1) 2658 seq_puts(m, "CH1 "); 2659 if (s & CLRSTCNT) 2660 seq_puts(m, "CLRSTCNT "); 2661 if (s & SPIOEN) 2662 seq_puts(m, "SPIOEN "); 2663 if (s & CLRCH1) 2664 seq_puts(m, "CLRCH1 "); 2665 seq_puts(m, "); "); 2666 2667 seq_puts(m, "SIGNAL( "); 2668 2669 s = GETPORT(SCSISIG); 2670 if (s & SIG_ATNI) 2671 seq_puts(m, "ATNI "); 2672 if (s & SIG_SELI) 2673 seq_puts(m, "SELI "); 2674 if (s & SIG_BSYI) 2675 seq_puts(m, "BSYI "); 2676 if (s & SIG_REQI) 2677 seq_puts(m, "REQI "); 2678 if (s & SIG_ACKI) 2679 seq_puts(m, "ACKI "); 2680 seq_puts(m, "); "); 2681 2682 seq_printf(m, "SELID(%02x), ", GETPORT(SELID)); 2683 2684 seq_printf(m, "STCNT(%d), ", GETSTCNT()); 2685 2686 seq_puts(m, "SSTAT2( "); 2687 2688 s = GETPORT(SSTAT2); 2689 if (s & SOFFSET) 2690 seq_puts(m, "SOFFSET "); 2691 if (s & SEMPTY) 2692 seq_puts(m, "SEMPTY "); 2693 if (s & SFULL) 2694 seq_puts(m, "SFULL "); 2695 seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT)); 2696 2697 s = GETPORT(SSTAT3); 2698 seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f); 2699 2700 seq_puts(m, "SSTAT4( "); 2701 s = GETPORT(SSTAT4); 2702 if (s & SYNCERR) 2703 seq_puts(m, "SYNCERR "); 2704 if (s & FWERR) 2705 seq_puts(m, "FWERR "); 2706 if (s & FRERR) 2707 seq_puts(m, "FRERR "); 2708 seq_puts(m, "); "); 2709 2710 seq_puts(m, "DMACNTRL0( "); 2711 s = GETPORT(DMACNTRL0); 2712 seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT"); 2713 seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO"); 2714 seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ"); 2715 if (s & ENDMA) 2716 seq_puts(m, "ENDMA "); 2717 if (s & INTEN) 2718 seq_puts(m, "INTEN "); 2719 if (s & RSTFIFO) 2720 seq_puts(m, "RSTFIFO "); 2721 if (s & SWINT) 2722 seq_puts(m, "SWINT "); 2723 seq_puts(m, "); "); 2724 2725 seq_puts(m, "DMASTAT( "); 2726 s = GETPORT(DMASTAT); 2727 if (s & ATDONE) 2728 seq_puts(m, "ATDONE "); 2729 if (s & WORDRDY) 2730 seq_puts(m, "WORDRDY "); 2731 if (s & DFIFOFULL) 2732 seq_puts(m, "DFIFOFULL "); 2733 if (s & DFIFOEMP) 2734 seq_puts(m, "DFIFOEMP "); 2735 seq_puts(m, ")\n"); 2736 2737 seq_puts(m, "enabled interrupts( "); 2738 2739 s = GETPORT(SIMODE0); 2740 if (s & ENSELDO) 2741 seq_puts(m, "ENSELDO "); 2742 if (s & ENSELDI) 2743 seq_puts(m, "ENSELDI "); 2744 if (s & ENSELINGO) 2745 seq_puts(m, "ENSELINGO "); 2746 if (s & ENSWRAP) 2747 seq_puts(m, "ENSWRAP "); 2748 if (s & ENSDONE) 2749 seq_puts(m, "ENSDONE "); 2750 if (s & ENSPIORDY) 2751 seq_puts(m, "ENSPIORDY "); 2752 if (s & ENDMADONE) 2753 seq_puts(m, "ENDMADONE "); 2754 2755 s = GETPORT(SIMODE1); 2756 if (s & ENSELTIMO) 2757 seq_puts(m, "ENSELTIMO "); 2758 if (s & ENATNTARG) 2759 seq_puts(m, "ENATNTARG "); 2760 if (s & ENPHASEMIS) 2761 seq_puts(m, "ENPHASEMIS "); 2762 if (s & ENBUSFREE) 2763 seq_puts(m, "ENBUSFREE "); 2764 if (s & ENSCSIPERR) 2765 seq_puts(m, "ENSCSIPERR "); 2766 if (s & ENPHASECHG) 2767 seq_puts(m, "ENPHASECHG "); 2768 if (s & ENREQINIT) 2769 seq_puts(m, "ENREQINIT "); 2770 seq_puts(m, ")\n"); 2771 } 2772 2773 static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length) 2774 { 2775 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0) 2776 return -EINVAL; 2777 2778 #if defined(AHA152X_STAT) 2779 if(length>13 && strncmp("reset", buffer+8, 5)==0) { 2780 int i; 2781 2782 HOSTDATA(shpnt)->total_commands=0; 2783 HOSTDATA(shpnt)->disconnections=0; 2784 HOSTDATA(shpnt)->busfree_without_any_action=0; 2785 HOSTDATA(shpnt)->busfree_without_old_command=0; 2786 HOSTDATA(shpnt)->busfree_without_new_command=0; 2787 HOSTDATA(shpnt)->busfree_without_done_command=0; 2788 HOSTDATA(shpnt)->busfree_with_check_condition=0; 2789 for (i = idle; i<maxstate; i++) { 2790 HOSTDATA(shpnt)->count[i]=0; 2791 HOSTDATA(shpnt)->count_trans[i]=0; 2792 HOSTDATA(shpnt)->time[i]=0; 2793 } 2794 2795 shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n"); 2796 2797 } else 2798 #endif 2799 { 2800 return -EINVAL; 2801 } 2802 2803 2804 return length; 2805 } 2806 2807 static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt) 2808 { 2809 int i; 2810 struct scsi_cmnd *ptr; 2811 unsigned long flags; 2812 2813 seq_puts(m, AHA152X_REVID "\n"); 2814 2815 seq_printf(m, "ioports 0x%04lx to 0x%04lx\n", 2816 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1); 2817 seq_printf(m, "interrupt 0x%02x\n", shpnt->irq); 2818 seq_printf(m, "disconnection/reconnection %s\n", 2819 RECONNECT ? "enabled" : "disabled"); 2820 seq_printf(m, "parity checking %s\n", 2821 PARITY ? "enabled" : "disabled"); 2822 seq_printf(m, "synchronous transfers %s\n", 2823 SYNCHRONOUS ? "enabled" : "disabled"); 2824 seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands); 2825 2826 if(SYNCHRONOUS) { 2827 seq_puts(m, "synchronously operating targets (tick=50 ns):\n"); 2828 for (i = 0; i < 8; i++) 2829 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f) 2830 seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n", 2831 i, 2832 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2), 2833 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50, 2834 HOSTDATA(shpnt)->syncrate[i] & 0x0f); 2835 } 2836 seq_puts(m, "\nqueue status:\n"); 2837 DO_LOCK(flags); 2838 if (ISSUE_SC) { 2839 seq_puts(m, "not yet issued commands:\n"); 2840 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) 2841 get_command(m, ptr); 2842 } else 2843 seq_puts(m, "no not yet issued commands\n"); 2844 DO_UNLOCK(flags); 2845 2846 if (CURRENT_SC) { 2847 seq_puts(m, "current command:\n"); 2848 get_command(m, CURRENT_SC); 2849 } else 2850 seq_puts(m, "no current command\n"); 2851 2852 if (DISCONNECTED_SC) { 2853 seq_puts(m, "disconnected commands:\n"); 2854 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr)) 2855 get_command(m, ptr); 2856 } else 2857 seq_puts(m, "no disconnected commands\n"); 2858 2859 get_ports(m, shpnt); 2860 2861 #if defined(AHA152X_STAT) 2862 seq_printf(m, "statistics:\n" 2863 "total commands: %d\n" 2864 "disconnections: %d\n" 2865 "busfree with check condition: %d\n" 2866 "busfree without old command: %d\n" 2867 "busfree without new command: %d\n" 2868 "busfree without done command: %d\n" 2869 "busfree without any action: %d\n" 2870 "state " 2871 "transitions " 2872 "count " 2873 "time\n", 2874 HOSTDATA(shpnt)->total_commands, 2875 HOSTDATA(shpnt)->disconnections, 2876 HOSTDATA(shpnt)->busfree_with_check_condition, 2877 HOSTDATA(shpnt)->busfree_without_old_command, 2878 HOSTDATA(shpnt)->busfree_without_new_command, 2879 HOSTDATA(shpnt)->busfree_without_done_command, 2880 HOSTDATA(shpnt)->busfree_without_any_action); 2881 for(i=0; i<maxstate; i++) { 2882 seq_printf(m, "%-10s %-12d %-12d %-12ld\n", 2883 states[i].name, 2884 HOSTDATA(shpnt)->count_trans[i], 2885 HOSTDATA(shpnt)->count[i], 2886 HOSTDATA(shpnt)->time[i]); 2887 } 2888 #endif 2889 return 0; 2890 } 2891 2892 static int aha152x_adjust_queue(struct scsi_device *device) 2893 { 2894 blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH); 2895 return 0; 2896 } 2897 2898 static struct scsi_host_template aha152x_driver_template = { 2899 .module = THIS_MODULE, 2900 .name = AHA152X_REVID, 2901 .proc_name = "aha152x", 2902 .show_info = aha152x_show_info, 2903 .write_info = aha152x_set_info, 2904 .queuecommand = aha152x_queue, 2905 .eh_abort_handler = aha152x_abort, 2906 .eh_device_reset_handler = aha152x_device_reset, 2907 .eh_bus_reset_handler = aha152x_bus_reset, 2908 .bios_param = aha152x_biosparam, 2909 .can_queue = 1, 2910 .this_id = 7, 2911 .sg_tablesize = SG_ALL, 2912 .dma_boundary = PAGE_SIZE - 1, 2913 .slave_alloc = aha152x_adjust_queue, 2914 }; 2915 2916 #if !defined(AHA152X_PCMCIA) 2917 static int setup_count; 2918 static struct aha152x_setup setup[2]; 2919 2920 /* possible i/o addresses for the AIC-6260; default first */ 2921 static unsigned short ports[] = { 0x340, 0x140 }; 2922 2923 #if !defined(SKIP_BIOSTEST) 2924 /* possible locations for the Adaptec BIOS; defaults first */ 2925 static unsigned int addresses[] = 2926 { 2927 0xdc000, /* default first */ 2928 0xc8000, 2929 0xcc000, 2930 0xd0000, 2931 0xd4000, 2932 0xd8000, 2933 0xe0000, 2934 0xeb800, /* VTech Platinum SMP */ 2935 0xf0000, 2936 }; 2937 2938 /* signatures for various AIC-6[23]60 based controllers. 2939 The point in detecting signatures is to avoid useless and maybe 2940 harmful probes on ports. I'm not sure that all listed boards pass 2941 auto-configuration. For those which fail the BIOS signature is 2942 obsolete, because user intervention to supply the configuration is 2943 needed anyway. May be an information whether or not the BIOS supports 2944 extended translation could be also useful here. */ 2945 static struct signature { 2946 unsigned char *signature; 2947 int sig_offset; 2948 int sig_length; 2949 } signatures[] = 2950 { 2951 { "Adaptec AHA-1520 BIOS", 0x102e, 21 }, 2952 /* Adaptec 152x */ 2953 { "Adaptec AHA-1520B", 0x000b, 17 }, 2954 /* Adaptec 152x rev B */ 2955 { "Adaptec AHA-1520B", 0x0026, 17 }, 2956 /* Iomega Jaz Jet ISA (AIC6370Q) */ 2957 { "Adaptec ASW-B626 BIOS", 0x1029, 21 }, 2958 /* on-board controller */ 2959 { "Adaptec BIOS: ASW-B626", 0x000f, 22 }, 2960 /* on-board controller */ 2961 { "Adaptec ASW-B626 S2", 0x2e6c, 19 }, 2962 /* on-board controller */ 2963 { "Adaptec BIOS:AIC-6360", 0x000c, 21 }, 2964 /* on-board controller */ 2965 { "ScsiPro SP-360 BIOS", 0x2873, 19 }, 2966 /* ScsiPro-Controller */ 2967 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 }, 2968 /* Gigabyte Local-Bus-SCSI */ 2969 { "Adaptec BIOS:AVA-282X", 0x000c, 21 }, 2970 /* Adaptec 282x */ 2971 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 }, 2972 /* IBM Thinkpad Dock II */ 2973 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 }, 2974 /* IBM Thinkpad Dock II SCSI */ 2975 { "DTC3520A Host Adapter BIOS", 0x318a, 26 }, 2976 /* DTC 3520A ISA SCSI */ 2977 }; 2978 #endif /* !SKIP_BIOSTEST */ 2979 2980 /* 2981 * Test, if port_base is valid. 2982 * 2983 */ 2984 static int aha152x_porttest(int io_port) 2985 { 2986 int i; 2987 2988 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ 2989 for (i = 0; i < 16; i++) 2990 SETPORT(io_port + O_STACK, i); 2991 2992 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ 2993 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++) 2994 ; 2995 2996 return (i == 16); 2997 } 2998 2999 static int tc1550_porttest(int io_port) 3000 { 3001 int i; 3002 3003 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ 3004 for (i = 0; i < 16; i++) 3005 SETPORT(io_port + O_STACK, i); 3006 3007 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ 3008 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++) 3009 ; 3010 3011 return (i == 16); 3012 } 3013 3014 3015 static int checksetup(struct aha152x_setup *setup) 3016 { 3017 int i; 3018 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++) 3019 ; 3020 3021 if (i == ARRAY_SIZE(ports)) 3022 return 0; 3023 3024 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) { 3025 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port); 3026 return 0; 3027 } 3028 3029 if( aha152x_porttest(setup->io_port) ) { 3030 setup->tc1550=0; 3031 } else if( tc1550_porttest(setup->io_port) ) { 3032 setup->tc1550=1; 3033 } else { 3034 release_region(setup->io_port, IO_RANGE); 3035 return 0; 3036 } 3037 3038 release_region(setup->io_port, IO_RANGE); 3039 3040 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX)) 3041 return 0; 3042 3043 if ((setup->scsiid < 0) || (setup->scsiid > 7)) 3044 return 0; 3045 3046 if ((setup->reconnect < 0) || (setup->reconnect > 1)) 3047 return 0; 3048 3049 if ((setup->parity < 0) || (setup->parity > 1)) 3050 return 0; 3051 3052 if ((setup->synchronous < 0) || (setup->synchronous > 1)) 3053 return 0; 3054 3055 if ((setup->ext_trans < 0) || (setup->ext_trans > 1)) 3056 return 0; 3057 3058 3059 return 1; 3060 } 3061 3062 3063 static int __init aha152x_init(void) 3064 { 3065 int i, j, ok; 3066 #if defined(AUTOCONF) 3067 aha152x_config conf; 3068 #endif 3069 #ifdef __ISAPNP__ 3070 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL}; 3071 #endif 3072 3073 if ( setup_count ) { 3074 printk(KERN_INFO "aha152x: processing commandline: "); 3075 3076 for (i = 0; i<setup_count; i++) { 3077 if (!checksetup(&setup[i])) { 3078 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf); 3079 printk(KERN_ERR "aha152x: invalid line\n"); 3080 } 3081 } 3082 printk("ok\n"); 3083 } 3084 3085 #if defined(SETUP0) 3086 if (setup_count < ARRAY_SIZE(setup)) { 3087 struct aha152x_setup override = SETUP0; 3088 3089 if (setup_count == 0 || (override.io_port != setup[0].io_port)) { 3090 if (!checksetup(&override)) { 3091 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", 3092 override.io_port, 3093 override.irq, 3094 override.scsiid, 3095 override.reconnect, 3096 override.parity, 3097 override.synchronous, 3098 override.delay, 3099 override.ext_trans); 3100 } else 3101 setup[setup_count++] = override; 3102 } 3103 } 3104 #endif 3105 3106 #if defined(SETUP1) 3107 if (setup_count < ARRAY_SIZE(setup)) { 3108 struct aha152x_setup override = SETUP1; 3109 3110 if (setup_count == 0 || (override.io_port != setup[0].io_port)) { 3111 if (!checksetup(&override)) { 3112 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", 3113 override.io_port, 3114 override.irq, 3115 override.scsiid, 3116 override.reconnect, 3117 override.parity, 3118 override.synchronous, 3119 override.delay, 3120 override.ext_trans); 3121 } else 3122 setup[setup_count++] = override; 3123 } 3124 } 3125 #endif 3126 3127 #if defined(MODULE) 3128 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) { 3129 if(aha152x[0]!=0) { 3130 setup[setup_count].conf = ""; 3131 setup[setup_count].io_port = aha152x[0]; 3132 setup[setup_count].irq = aha152x[1]; 3133 setup[setup_count].scsiid = aha152x[2]; 3134 setup[setup_count].reconnect = aha152x[3]; 3135 setup[setup_count].parity = aha152x[4]; 3136 setup[setup_count].synchronous = aha152x[5]; 3137 setup[setup_count].delay = aha152x[6]; 3138 setup[setup_count].ext_trans = aha152x[7]; 3139 } else if (io[0] != 0 || irq[0] != 0) { 3140 if(io[0]!=0) setup[setup_count].io_port = io[0]; 3141 if(irq[0]!=0) setup[setup_count].irq = irq[0]; 3142 3143 setup[setup_count].scsiid = scsiid[0]; 3144 setup[setup_count].reconnect = reconnect[0]; 3145 setup[setup_count].parity = parity[0]; 3146 setup[setup_count].synchronous = sync[0]; 3147 setup[setup_count].delay = delay[0]; 3148 setup[setup_count].ext_trans = exttrans[0]; 3149 } 3150 3151 if (checksetup(&setup[setup_count])) 3152 setup_count++; 3153 else 3154 printk(KERN_ERR "aha152x: invalid module params io=0x%x, irq=%d,scsiid=%d,reconnect=%d,parity=%d,sync=%d,delay=%d,exttrans=%d\n", 3155 setup[setup_count].io_port, 3156 setup[setup_count].irq, 3157 setup[setup_count].scsiid, 3158 setup[setup_count].reconnect, 3159 setup[setup_count].parity, 3160 setup[setup_count].synchronous, 3161 setup[setup_count].delay, 3162 setup[setup_count].ext_trans); 3163 } 3164 3165 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) { 3166 if(aha152x1[0]!=0) { 3167 setup[setup_count].conf = ""; 3168 setup[setup_count].io_port = aha152x1[0]; 3169 setup[setup_count].irq = aha152x1[1]; 3170 setup[setup_count].scsiid = aha152x1[2]; 3171 setup[setup_count].reconnect = aha152x1[3]; 3172 setup[setup_count].parity = aha152x1[4]; 3173 setup[setup_count].synchronous = aha152x1[5]; 3174 setup[setup_count].delay = aha152x1[6]; 3175 setup[setup_count].ext_trans = aha152x1[7]; 3176 } else if (io[1] != 0 || irq[1] != 0) { 3177 if(io[1]!=0) setup[setup_count].io_port = io[1]; 3178 if(irq[1]!=0) setup[setup_count].irq = irq[1]; 3179 3180 setup[setup_count].scsiid = scsiid[1]; 3181 setup[setup_count].reconnect = reconnect[1]; 3182 setup[setup_count].parity = parity[1]; 3183 setup[setup_count].synchronous = sync[1]; 3184 setup[setup_count].delay = delay[1]; 3185 setup[setup_count].ext_trans = exttrans[1]; 3186 } 3187 if (checksetup(&setup[setup_count])) 3188 setup_count++; 3189 else 3190 printk(KERN_ERR "aha152x: invalid module params io=0x%x, irq=%d,scsiid=%d,reconnect=%d,parity=%d,sync=%d,delay=%d,exttrans=%d\n", 3191 setup[setup_count].io_port, 3192 setup[setup_count].irq, 3193 setup[setup_count].scsiid, 3194 setup[setup_count].reconnect, 3195 setup[setup_count].parity, 3196 setup[setup_count].synchronous, 3197 setup[setup_count].delay, 3198 setup[setup_count].ext_trans); 3199 } 3200 #endif 3201 3202 #ifdef __ISAPNP__ 3203 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) { 3204 while ( setup_count<ARRAY_SIZE(setup) && 3205 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) { 3206 if (pnp_device_attach(dev) < 0) 3207 continue; 3208 3209 if (pnp_activate_dev(dev) < 0) { 3210 pnp_device_detach(dev); 3211 continue; 3212 } 3213 3214 if (!pnp_port_valid(dev, 0)) { 3215 pnp_device_detach(dev); 3216 continue; 3217 } 3218 3219 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) { 3220 pnp_device_detach(dev); 3221 continue; 3222 } 3223 3224 setup[setup_count].io_port = pnp_port_start(dev, 0); 3225 setup[setup_count].irq = pnp_irq(dev, 0); 3226 setup[setup_count].scsiid = 7; 3227 setup[setup_count].reconnect = 1; 3228 setup[setup_count].parity = 1; 3229 setup[setup_count].synchronous = 1; 3230 setup[setup_count].delay = DELAY_DEFAULT; 3231 setup[setup_count].ext_trans = 0; 3232 #if defined(__ISAPNP__) 3233 pnpdev[setup_count] = dev; 3234 #endif 3235 printk (KERN_INFO 3236 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n", 3237 setup[setup_count].io_port, setup[setup_count].irq); 3238 setup_count++; 3239 } 3240 } 3241 #endif 3242 3243 #if defined(AUTOCONF) 3244 if (setup_count<ARRAY_SIZE(setup)) { 3245 #if !defined(SKIP_BIOSTEST) 3246 ok = 0; 3247 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) { 3248 void __iomem *p = ioremap(addresses[i], 0x4000); 3249 if (!p) 3250 continue; 3251 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++) 3252 ok = check_signature(p + signatures[j].sig_offset, 3253 signatures[j].signature, signatures[j].sig_length); 3254 iounmap(p); 3255 } 3256 if (!ok && setup_count == 0) 3257 return -ENODEV; 3258 3259 printk(KERN_INFO "aha152x: BIOS test: passed, "); 3260 #else 3261 printk(KERN_INFO "aha152x: "); 3262 #endif /* !SKIP_BIOSTEST */ 3263 3264 ok = 0; 3265 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) { 3266 if ((setup_count == 1) && (setup[0].io_port == ports[i])) 3267 continue; 3268 3269 if (!request_region(ports[i], IO_RANGE, "aha152x")) { 3270 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]); 3271 continue; 3272 } 3273 3274 if (aha152x_porttest(ports[i])) { 3275 setup[setup_count].tc1550 = 0; 3276 3277 conf.cf_port = 3278 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB); 3279 } else if (tc1550_porttest(ports[i])) { 3280 setup[setup_count].tc1550 = 1; 3281 3282 conf.cf_port = 3283 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB); 3284 } else { 3285 release_region(ports[i], IO_RANGE); 3286 continue; 3287 } 3288 3289 release_region(ports[i], IO_RANGE); 3290 3291 ok++; 3292 setup[setup_count].io_port = ports[i]; 3293 setup[setup_count].irq = IRQ_MIN + conf.cf_irq; 3294 setup[setup_count].scsiid = conf.cf_id; 3295 setup[setup_count].reconnect = conf.cf_tardisc; 3296 setup[setup_count].parity = !conf.cf_parity; 3297 setup[setup_count].synchronous = conf.cf_syncneg; 3298 setup[setup_count].delay = DELAY_DEFAULT; 3299 setup[setup_count].ext_trans = 0; 3300 setup_count++; 3301 3302 } 3303 3304 if (ok) 3305 printk("auto configuration: ok, "); 3306 } 3307 #endif 3308 3309 printk("%d controller(s) configured\n", setup_count); 3310 3311 for (i=0; i<setup_count; i++) { 3312 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) { 3313 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]); 3314 3315 if( !shpnt ) { 3316 release_region(setup[i].io_port, IO_RANGE); 3317 #if defined(__ISAPNP__) 3318 } else if( pnpdev[i] ) { 3319 HOSTDATA(shpnt)->pnpdev=pnpdev[i]; 3320 pnpdev[i]=NULL; 3321 #endif 3322 } 3323 } else { 3324 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port); 3325 } 3326 3327 #if defined(__ISAPNP__) 3328 if( pnpdev[i] ) 3329 pnp_device_detach(pnpdev[i]); 3330 #endif 3331 } 3332 3333 return 0; 3334 } 3335 3336 static void __exit aha152x_exit(void) 3337 { 3338 struct aha152x_hostdata *hd, *tmp; 3339 3340 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) { 3341 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); 3342 3343 aha152x_release(shost); 3344 } 3345 } 3346 3347 module_init(aha152x_init); 3348 module_exit(aha152x_exit); 3349 3350 #if !defined(MODULE) 3351 static int __init aha152x_setup(char *str) 3352 { 3353 int ints[10]; 3354 3355 get_options(str, ARRAY_SIZE(ints), ints); 3356 3357 if(setup_count>=ARRAY_SIZE(setup)) { 3358 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n"); 3359 return 1; 3360 } 3361 3362 setup[setup_count].conf = str; 3363 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340; 3364 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11; 3365 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7; 3366 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1; 3367 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1; 3368 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1; 3369 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT; 3370 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0; 3371 if (ints[0] > 8) { /*}*/ 3372 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>" 3373 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n"); 3374 } else { 3375 setup_count++; 3376 return 0; 3377 } 3378 3379 return 1; 3380 } 3381 __setup("aha152x=", aha152x_setup); 3382 #endif 3383 3384 #endif /* !AHA152X_PCMCIA */ 3385