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.rst 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, unsigned char status_byte, 623 unsigned char host_byte); 624 625 /* diagnostics */ 626 static void show_command(struct scsi_cmnd * ptr); 627 static void show_queues(struct Scsi_Host *shpnt); 628 static void disp_enintr(struct Scsi_Host *shpnt); 629 630 631 /* 632 * queue services: 633 * 634 */ 635 static inline void append_SC(struct scsi_cmnd **SC, struct scsi_cmnd *new_SC) 636 { 637 struct scsi_cmnd *end; 638 639 SCNEXT(new_SC) = NULL; 640 if (!*SC) 641 *SC = new_SC; 642 else { 643 for (end = *SC; SCNEXT(end); end = SCNEXT(end)) 644 ; 645 SCNEXT(end) = new_SC; 646 } 647 } 648 649 static inline struct scsi_cmnd *remove_first_SC(struct scsi_cmnd ** SC) 650 { 651 struct scsi_cmnd *ptr; 652 653 ptr = *SC; 654 if (ptr) { 655 *SC = SCNEXT(*SC); 656 SCNEXT(ptr)=NULL; 657 } 658 return ptr; 659 } 660 661 static inline struct scsi_cmnd *remove_lun_SC(struct scsi_cmnd ** SC, 662 int target, int lun) 663 { 664 struct scsi_cmnd *ptr, *prev; 665 666 for (ptr = *SC, prev = NULL; 667 ptr && ((ptr->device->id != target) || (ptr->device->lun != lun)); 668 prev = ptr, ptr = SCNEXT(ptr)) 669 ; 670 671 if (ptr) { 672 if (prev) 673 SCNEXT(prev) = SCNEXT(ptr); 674 else 675 *SC = SCNEXT(ptr); 676 677 SCNEXT(ptr)=NULL; 678 } 679 680 return ptr; 681 } 682 683 static inline struct scsi_cmnd *remove_SC(struct scsi_cmnd **SC, 684 struct scsi_cmnd *SCp) 685 { 686 struct scsi_cmnd *ptr, *prev; 687 688 for (ptr = *SC, prev = NULL; 689 ptr && SCp!=ptr; 690 prev = ptr, ptr = SCNEXT(ptr)) 691 ; 692 693 if (ptr) { 694 if (prev) 695 SCNEXT(prev) = SCNEXT(ptr); 696 else 697 *SC = SCNEXT(ptr); 698 699 SCNEXT(ptr)=NULL; 700 } 701 702 return ptr; 703 } 704 705 static irqreturn_t swintr(int irqno, void *dev_id) 706 { 707 struct Scsi_Host *shpnt = dev_id; 708 709 HOSTDATA(shpnt)->swint++; 710 711 SETPORT(DMACNTRL0, INTEN); 712 return IRQ_HANDLED; 713 } 714 715 struct Scsi_Host *aha152x_probe_one(struct aha152x_setup *setup) 716 { 717 struct Scsi_Host *shpnt; 718 719 shpnt = scsi_host_alloc(&aha152x_driver_template, sizeof(struct aha152x_hostdata)); 720 if (!shpnt) { 721 printk(KERN_ERR "aha152x: scsi_host_alloc failed\n"); 722 return NULL; 723 } 724 725 memset(HOSTDATA(shpnt), 0, sizeof *HOSTDATA(shpnt)); 726 INIT_LIST_HEAD(&HOSTDATA(shpnt)->host_list); 727 728 /* need to have host registered before triggering any interrupt */ 729 list_add_tail(&HOSTDATA(shpnt)->host_list, &aha152x_host_list); 730 731 shpnt->io_port = setup->io_port; 732 shpnt->n_io_port = IO_RANGE; 733 shpnt->irq = setup->irq; 734 735 if (!setup->tc1550) { 736 HOSTIOPORT0 = setup->io_port; 737 HOSTIOPORT1 = setup->io_port; 738 } else { 739 HOSTIOPORT0 = setup->io_port+0x10; 740 HOSTIOPORT1 = setup->io_port-0x10; 741 } 742 743 spin_lock_init(&QLOCK); 744 RECONNECT = setup->reconnect; 745 SYNCHRONOUS = setup->synchronous; 746 PARITY = setup->parity; 747 DELAY = setup->delay; 748 EXT_TRANS = setup->ext_trans; 749 750 SETPORT(SCSIID, setup->scsiid << 4); 751 shpnt->this_id = setup->scsiid; 752 753 if (setup->reconnect) 754 shpnt->can_queue = AHA152X_MAXQUEUE; 755 756 /* RESET OUT */ 757 printk("aha152x: resetting bus...\n"); 758 SETPORT(SCSISEQ, SCSIRSTO); 759 mdelay(256); 760 SETPORT(SCSISEQ, 0); 761 mdelay(DELAY); 762 763 reset_ports(shpnt); 764 765 printk(KERN_INFO 766 "aha152x%d%s: " 767 "vital data: rev=%x, " 768 "io=0x%03lx (0x%03lx/0x%03lx), " 769 "irq=%d, " 770 "scsiid=%d, " 771 "reconnect=%s, " 772 "parity=%s, " 773 "synchronous=%s, " 774 "delay=%d, " 775 "extended translation=%s\n", 776 shpnt->host_no, setup->tc1550 ? " (tc1550 mode)" : "", 777 GETPORT(REV) & 0x7, 778 shpnt->io_port, HOSTIOPORT0, HOSTIOPORT1, 779 shpnt->irq, 780 shpnt->this_id, 781 RECONNECT ? "enabled" : "disabled", 782 PARITY ? "enabled" : "disabled", 783 SYNCHRONOUS ? "enabled" : "disabled", 784 DELAY, 785 EXT_TRANS ? "enabled" : "disabled"); 786 787 /* not expecting any interrupts */ 788 SETPORT(SIMODE0, 0); 789 SETPORT(SIMODE1, 0); 790 791 if (request_irq(shpnt->irq, swintr, IRQF_SHARED, "aha152x", shpnt)) { 792 printk(KERN_ERR "aha152x%d: irq %d busy.\n", shpnt->host_no, shpnt->irq); 793 goto out_host_put; 794 } 795 796 HOSTDATA(shpnt)->swint = 0; 797 798 printk(KERN_INFO "aha152x%d: trying software interrupt, ", shpnt->host_no); 799 800 mb(); 801 SETPORT(DMACNTRL0, SWINT|INTEN); 802 mdelay(1000); 803 free_irq(shpnt->irq, shpnt); 804 805 if (!HOSTDATA(shpnt)->swint) { 806 if (TESTHI(DMASTAT, INTSTAT)) { 807 printk("lost.\n"); 808 } else { 809 printk("failed.\n"); 810 } 811 812 SETPORT(DMACNTRL0, INTEN); 813 814 printk(KERN_ERR "aha152x%d: irq %d possibly wrong. " 815 "Please verify.\n", shpnt->host_no, shpnt->irq); 816 goto out_host_put; 817 } 818 printk("ok.\n"); 819 820 821 /* clear interrupts */ 822 SETPORT(SSTAT0, 0x7f); 823 SETPORT(SSTAT1, 0xef); 824 825 if (request_irq(shpnt->irq, intr, IRQF_SHARED, "aha152x", shpnt)) { 826 printk(KERN_ERR "aha152x%d: failed to reassign irq %d.\n", shpnt->host_no, shpnt->irq); 827 goto out_host_put; 828 } 829 830 if( scsi_add_host(shpnt, NULL) ) { 831 free_irq(shpnt->irq, shpnt); 832 printk(KERN_ERR "aha152x%d: failed to add host.\n", shpnt->host_no); 833 goto out_host_put; 834 } 835 836 scsi_scan_host(shpnt); 837 838 return shpnt; 839 840 out_host_put: 841 list_del(&HOSTDATA(shpnt)->host_list); 842 scsi_host_put(shpnt); 843 844 return NULL; 845 } 846 847 void aha152x_release(struct Scsi_Host *shpnt) 848 { 849 if (!shpnt) 850 return; 851 852 scsi_remove_host(shpnt); 853 if (shpnt->irq) 854 free_irq(shpnt->irq, shpnt); 855 856 #if !defined(AHA152X_PCMCIA) 857 if (shpnt->io_port) 858 release_region(shpnt->io_port, IO_RANGE); 859 #endif 860 861 #ifdef __ISAPNP__ 862 if (HOSTDATA(shpnt)->pnpdev) 863 pnp_device_detach(HOSTDATA(shpnt)->pnpdev); 864 #endif 865 866 list_del(&HOSTDATA(shpnt)->host_list); 867 scsi_host_put(shpnt); 868 } 869 870 871 /* 872 * setup controller to generate interrupts depending 873 * on current state (lock has to be acquired) 874 * 875 */ 876 static int setup_expected_interrupts(struct Scsi_Host *shpnt) 877 { 878 if(CURRENT_SC) { 879 CURRENT_SC->SCp.phase |= 1 << 16; 880 881 if(CURRENT_SC->SCp.phase & selecting) { 882 SETPORT(SSTAT1, SELTO); 883 SETPORT(SIMODE0, ENSELDO | (DISCONNECTED_SC ? ENSELDI : 0)); 884 SETPORT(SIMODE1, ENSELTIMO); 885 } else { 886 SETPORT(SIMODE0, (CURRENT_SC->SCp.phase & spiordy) ? ENSPIORDY : 0); 887 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); 888 } 889 } else if(STATE==seldi) { 890 SETPORT(SIMODE0, 0); 891 SETPORT(SIMODE1, ENPHASEMIS | ENSCSIRST | ENSCSIPERR | ENBUSFREE); 892 } else { 893 SETPORT(SIMODE0, DISCONNECTED_SC ? ENSELDI : 0); 894 SETPORT(SIMODE1, ENSCSIRST | ( (ISSUE_SC||DONE_SC) ? ENBUSFREE : 0)); 895 } 896 897 if(!HOSTDATA(shpnt)->in_intr) 898 SETBITS(DMACNTRL0, INTEN); 899 900 return TESTHI(DMASTAT, INTSTAT); 901 } 902 903 904 /* 905 * Queue a command and setup interrupts for a free bus. 906 */ 907 static int aha152x_internal_queue(struct scsi_cmnd *SCpnt, 908 struct completion *complete, 909 int phase, void (*done)(struct scsi_cmnd *)) 910 { 911 struct Scsi_Host *shpnt = SCpnt->device->host; 912 unsigned long flags; 913 914 SCpnt->scsi_done = done; 915 SCpnt->SCp.phase = not_issued | phase; 916 SCpnt->SCp.Status = 0x1; /* Ilegal status by SCSI standard */ 917 SCpnt->SCp.Message = 0; 918 SCpnt->SCp.have_data_in = 0; 919 SCpnt->SCp.sent_command = 0; 920 921 if(SCpnt->SCp.phase & (resetting|check_condition)) { 922 if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) { 923 scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n"); 924 return FAILED; 925 } 926 } else { 927 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC); 928 if(!SCpnt->host_scribble) { 929 scmd_printk(KERN_ERR, SCpnt, "allocation failed\n"); 930 return FAILED; 931 } 932 } 933 934 SCNEXT(SCpnt) = NULL; 935 SCSEM(SCpnt) = complete; 936 937 /* setup scratch area 938 SCp.ptr : buffer pointer 939 SCp.this_residual : buffer length 940 SCp.buffer : next buffer 941 SCp.phase : current state of the command */ 942 943 if ((phase & resetting) || !scsi_sglist(SCpnt)) { 944 SCpnt->SCp.ptr = NULL; 945 SCpnt->SCp.this_residual = 0; 946 scsi_set_resid(SCpnt, 0); 947 SCpnt->SCp.buffer = NULL; 948 } else { 949 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); 950 SCpnt->SCp.buffer = scsi_sglist(SCpnt); 951 SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer); 952 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length; 953 } 954 955 DO_LOCK(flags); 956 957 #if defined(AHA152X_STAT) 958 HOSTDATA(shpnt)->total_commands++; 959 #endif 960 961 /* Turn led on, when this is the first command. */ 962 HOSTDATA(shpnt)->commands++; 963 if (HOSTDATA(shpnt)->commands==1) 964 SETPORT(PORTA, 1); 965 966 append_SC(&ISSUE_SC, SCpnt); 967 968 if(!HOSTDATA(shpnt)->in_intr) 969 setup_expected_interrupts(shpnt); 970 971 DO_UNLOCK(flags); 972 973 return 0; 974 } 975 976 /* 977 * queue a command 978 * 979 */ 980 static int aha152x_queue_lck(struct scsi_cmnd *SCpnt, 981 void (*done)(struct scsi_cmnd *)) 982 { 983 return aha152x_internal_queue(SCpnt, NULL, 0, done); 984 } 985 986 static DEF_SCSI_QCMD(aha152x_queue) 987 988 989 /* 990 * 991 */ 992 static void reset_done(struct scsi_cmnd *SCpnt) 993 { 994 if(SCSEM(SCpnt)) { 995 complete(SCSEM(SCpnt)); 996 } else { 997 printk(KERN_ERR "aha152x: reset_done w/o completion\n"); 998 } 999 } 1000 1001 /* 1002 * Abort a command 1003 * 1004 */ 1005 static int aha152x_abort(struct scsi_cmnd *SCpnt) 1006 { 1007 struct Scsi_Host *shpnt = SCpnt->device->host; 1008 struct scsi_cmnd *ptr; 1009 unsigned long flags; 1010 1011 DO_LOCK(flags); 1012 1013 ptr=remove_SC(&ISSUE_SC, SCpnt); 1014 1015 if(ptr) { 1016 HOSTDATA(shpnt)->commands--; 1017 if (!HOSTDATA(shpnt)->commands) 1018 SETPORT(PORTA, 0); 1019 DO_UNLOCK(flags); 1020 1021 kfree(SCpnt->host_scribble); 1022 SCpnt->host_scribble=NULL; 1023 1024 return SUCCESS; 1025 } 1026 1027 DO_UNLOCK(flags); 1028 1029 /* 1030 * FIXME: 1031 * for current command: queue ABORT for message out and raise ATN 1032 * for disconnected command: pseudo SC with ABORT message or ABORT on reselection? 1033 * 1034 */ 1035 1036 scmd_printk(KERN_ERR, SCpnt, 1037 "cannot abort running or disconnected command\n"); 1038 1039 return FAILED; 1040 } 1041 1042 /* 1043 * Reset a device 1044 * 1045 */ 1046 static int aha152x_device_reset(struct scsi_cmnd * SCpnt) 1047 { 1048 struct Scsi_Host *shpnt = SCpnt->device->host; 1049 DECLARE_COMPLETION(done); 1050 int ret, issued, disconnected; 1051 unsigned char old_cmd_len = SCpnt->cmd_len; 1052 unsigned long flags; 1053 unsigned long timeleft; 1054 1055 if(CURRENT_SC==SCpnt) { 1056 scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n"); 1057 return FAILED; 1058 } 1059 1060 DO_LOCK(flags); 1061 issued = remove_SC(&ISSUE_SC, SCpnt) == NULL; 1062 disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt); 1063 DO_UNLOCK(flags); 1064 1065 SCpnt->cmd_len = 0; 1066 1067 aha152x_internal_queue(SCpnt, &done, resetting, reset_done); 1068 1069 timeleft = wait_for_completion_timeout(&done, 100*HZ); 1070 if (!timeleft) { 1071 /* remove command from issue queue */ 1072 DO_LOCK(flags); 1073 remove_SC(&ISSUE_SC, SCpnt); 1074 DO_UNLOCK(flags); 1075 } 1076 1077 SCpnt->cmd_len = old_cmd_len; 1078 1079 DO_LOCK(flags); 1080 1081 if(SCpnt->SCp.phase & resetted) { 1082 HOSTDATA(shpnt)->commands--; 1083 if (!HOSTDATA(shpnt)->commands) 1084 SETPORT(PORTA, 0); 1085 kfree(SCpnt->host_scribble); 1086 SCpnt->host_scribble=NULL; 1087 1088 ret = SUCCESS; 1089 } else { 1090 /* requeue */ 1091 if(!issued) { 1092 append_SC(&ISSUE_SC, SCpnt); 1093 } else if(disconnected) { 1094 append_SC(&DISCONNECTED_SC, SCpnt); 1095 } 1096 1097 ret = FAILED; 1098 } 1099 1100 DO_UNLOCK(flags); 1101 return ret; 1102 } 1103 1104 static void free_hard_reset_SCs(struct Scsi_Host *shpnt, 1105 struct scsi_cmnd **SCs) 1106 { 1107 struct scsi_cmnd *ptr; 1108 1109 ptr=*SCs; 1110 while(ptr) { 1111 struct scsi_cmnd *next; 1112 1113 if(SCDATA(ptr)) { 1114 next = SCNEXT(ptr); 1115 } else { 1116 scmd_printk(KERN_DEBUG, ptr, 1117 "queue corrupted at %p\n", ptr); 1118 next = NULL; 1119 } 1120 1121 if (!ptr->device->soft_reset) { 1122 remove_SC(SCs, ptr); 1123 HOSTDATA(shpnt)->commands--; 1124 kfree(ptr->host_scribble); 1125 ptr->host_scribble=NULL; 1126 } 1127 1128 ptr = next; 1129 } 1130 } 1131 1132 /* 1133 * Reset the bus 1134 * 1135 * AIC-6260 has a hard reset (MRST signal), but apparently 1136 * one cannot trigger it via software. So live with 1137 * a soft reset; no-one seemed to have cared. 1138 */ 1139 static int aha152x_bus_reset_host(struct Scsi_Host *shpnt) 1140 { 1141 unsigned long flags; 1142 1143 DO_LOCK(flags); 1144 1145 free_hard_reset_SCs(shpnt, &ISSUE_SC); 1146 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC); 1147 1148 SETPORT(SCSISEQ, SCSIRSTO); 1149 mdelay(256); 1150 SETPORT(SCSISEQ, 0); 1151 mdelay(DELAY); 1152 1153 setup_expected_interrupts(shpnt); 1154 if(HOSTDATA(shpnt)->commands==0) 1155 SETPORT(PORTA, 0); 1156 1157 DO_UNLOCK(flags); 1158 1159 return SUCCESS; 1160 } 1161 1162 /* 1163 * Reset the bus 1164 * 1165 */ 1166 static int aha152x_bus_reset(struct scsi_cmnd *SCpnt) 1167 { 1168 return aha152x_bus_reset_host(SCpnt->device->host); 1169 } 1170 1171 /* 1172 * Restore default values to the AIC-6260 registers and reset the fifos 1173 * 1174 */ 1175 static void reset_ports(struct Scsi_Host *shpnt) 1176 { 1177 unsigned long flags; 1178 1179 /* disable interrupts */ 1180 SETPORT(DMACNTRL0, RSTFIFO); 1181 1182 SETPORT(SCSISEQ, 0); 1183 1184 SETPORT(SXFRCTL1, 0); 1185 SETPORT(SCSISIG, 0); 1186 SETRATE(0); 1187 1188 /* clear all interrupt conditions */ 1189 SETPORT(SSTAT0, 0x7f); 1190 SETPORT(SSTAT1, 0xef); 1191 1192 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR); 1193 1194 SETPORT(DMACNTRL0, 0); 1195 SETPORT(DMACNTRL1, 0); 1196 1197 SETPORT(BRSTCNTRL, 0xf1); 1198 1199 /* clear SCSI fifos and transfer count */ 1200 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 1201 SETPORT(SXFRCTL0, CH1); 1202 1203 DO_LOCK(flags); 1204 setup_expected_interrupts(shpnt); 1205 DO_UNLOCK(flags); 1206 } 1207 1208 /* 1209 * Reset the host (bus and controller) 1210 * 1211 */ 1212 int aha152x_host_reset_host(struct Scsi_Host *shpnt) 1213 { 1214 aha152x_bus_reset_host(shpnt); 1215 reset_ports(shpnt); 1216 1217 return SUCCESS; 1218 } 1219 1220 /* 1221 * Return the "logical geometry" 1222 * 1223 */ 1224 static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev, 1225 sector_t capacity, int *info_array) 1226 { 1227 struct Scsi_Host *shpnt = sdev->host; 1228 1229 /* try default translation */ 1230 info_array[0] = 64; 1231 info_array[1] = 32; 1232 info_array[2] = (unsigned long)capacity / (64 * 32); 1233 1234 /* for disks >1GB do some guessing */ 1235 if (info_array[2] >= 1024) { 1236 int info[3]; 1237 1238 /* try to figure out the geometry from the partition table */ 1239 if (scsicam_bios_param(bdev, capacity, info) < 0 || 1240 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) { 1241 if (EXT_TRANS) { 1242 printk(KERN_NOTICE 1243 "aha152x: unable to verify geometry for disk with >1GB.\n" 1244 " using extended translation.\n"); 1245 info_array[0] = 255; 1246 info_array[1] = 63; 1247 info_array[2] = (unsigned long)capacity / (255 * 63); 1248 } else { 1249 printk(KERN_NOTICE 1250 "aha152x: unable to verify geometry for disk with >1GB.\n" 1251 " Using default translation. Please verify yourself.\n" 1252 " Perhaps you need to enable extended translation in the driver.\n" 1253 " See Documentation/scsi/aha152x.rst for details.\n"); 1254 } 1255 } else { 1256 info_array[0] = info[0]; 1257 info_array[1] = info[1]; 1258 info_array[2] = info[2]; 1259 1260 if (info[0] == 255 && !EXT_TRANS) { 1261 printk(KERN_NOTICE 1262 "aha152x: current partition table is using extended translation.\n" 1263 " using it also, although it's not explicitly enabled.\n"); 1264 } 1265 } 1266 } 1267 1268 return 0; 1269 } 1270 1271 /* 1272 * Internal done function 1273 * 1274 */ 1275 static void done(struct Scsi_Host *shpnt, unsigned char status_byte, 1276 unsigned char host_byte) 1277 { 1278 if (CURRENT_SC) { 1279 if(DONE_SC) 1280 scmd_printk(KERN_ERR, CURRENT_SC, 1281 "there's already a completed command %p " 1282 "- will cause abort\n", DONE_SC); 1283 1284 DONE_SC = CURRENT_SC; 1285 CURRENT_SC = NULL; 1286 set_status_byte(DONE_SC, status_byte); 1287 set_host_byte(DONE_SC, host_byte); 1288 } else 1289 printk(KERN_ERR "aha152x: done() called outside of command\n"); 1290 } 1291 1292 static struct work_struct aha152x_tq; 1293 1294 /* 1295 * Run service completions on the card with interrupts enabled. 1296 * 1297 */ 1298 static void run(struct work_struct *work) 1299 { 1300 struct aha152x_hostdata *hd; 1301 1302 list_for_each_entry(hd, &aha152x_host_list, host_list) { 1303 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); 1304 1305 is_complete(shost); 1306 } 1307 } 1308 1309 /* 1310 * Interrupt handler 1311 * 1312 */ 1313 static irqreturn_t intr(int irqno, void *dev_id) 1314 { 1315 struct Scsi_Host *shpnt = dev_id; 1316 unsigned long flags; 1317 unsigned char rev, dmacntrl0; 1318 1319 /* 1320 * Read a couple of registers that are known to not be all 1's. If 1321 * we read all 1's (-1), that means that either: 1322 * 1323 * a. The host adapter chip has gone bad, and we cannot control it, 1324 * OR 1325 * b. The host adapter is a PCMCIA card that has been ejected 1326 * 1327 * In either case, we cannot do anything with the host adapter at 1328 * this point in time. So just ignore the interrupt and return. 1329 * In the latter case, the interrupt might actually be meant for 1330 * someone else sharing this IRQ, and that driver will handle it. 1331 */ 1332 rev = GETPORT(REV); 1333 dmacntrl0 = GETPORT(DMACNTRL0); 1334 if ((rev == 0xFF) && (dmacntrl0 == 0xFF)) 1335 return IRQ_NONE; 1336 1337 if( TESTLO(DMASTAT, INTSTAT) ) 1338 return IRQ_NONE; 1339 1340 /* no more interrupts from the controller, while we're busy. 1341 INTEN is restored by the BH handler */ 1342 CLRBITS(DMACNTRL0, INTEN); 1343 1344 DO_LOCK(flags); 1345 if( HOSTDATA(shpnt)->service==0 ) { 1346 HOSTDATA(shpnt)->service=1; 1347 1348 /* Poke the BH handler */ 1349 INIT_WORK(&aha152x_tq, run); 1350 schedule_work(&aha152x_tq); 1351 } 1352 DO_UNLOCK(flags); 1353 1354 return IRQ_HANDLED; 1355 } 1356 1357 /* 1358 * busfree phase 1359 * - handle completition/disconnection/error of current command 1360 * - start selection for next command (if any) 1361 */ 1362 static void busfree_run(struct Scsi_Host *shpnt) 1363 { 1364 unsigned long flags; 1365 #if defined(AHA152X_STAT) 1366 int action=0; 1367 #endif 1368 1369 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 1370 SETPORT(SXFRCTL0, CH1); 1371 1372 SETPORT(SSTAT1, CLRBUSFREE); 1373 1374 if(CURRENT_SC) { 1375 #if defined(AHA152X_STAT) 1376 action++; 1377 #endif 1378 CURRENT_SC->SCp.phase &= ~syncneg; 1379 1380 if(CURRENT_SC->SCp.phase & completed) { 1381 /* target sent COMMAND COMPLETE */ 1382 done(shpnt, CURRENT_SC->SCp.Status, DID_OK); 1383 1384 } else if(CURRENT_SC->SCp.phase & aborted) { 1385 done(shpnt, CURRENT_SC->SCp.Status, DID_ABORT); 1386 1387 } else if(CURRENT_SC->SCp.phase & resetted) { 1388 done(shpnt, CURRENT_SC->SCp.Status, DID_RESET); 1389 1390 } else if(CURRENT_SC->SCp.phase & disconnected) { 1391 /* target sent DISCONNECT */ 1392 #if defined(AHA152X_STAT) 1393 HOSTDATA(shpnt)->disconnections++; 1394 #endif 1395 append_SC(&DISCONNECTED_SC, CURRENT_SC); 1396 CURRENT_SC->SCp.phase |= 1 << 16; 1397 CURRENT_SC = NULL; 1398 1399 } else { 1400 done(shpnt, SAM_STAT_GOOD, DID_ERROR); 1401 } 1402 #if defined(AHA152X_STAT) 1403 } else { 1404 HOSTDATA(shpnt)->busfree_without_old_command++; 1405 #endif 1406 } 1407 1408 DO_LOCK(flags); 1409 1410 if(DONE_SC) { 1411 #if defined(AHA152X_STAT) 1412 action++; 1413 #endif 1414 1415 if(DONE_SC->SCp.phase & check_condition) { 1416 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC; 1417 struct aha152x_scdata *sc = SCDATA(cmd); 1418 1419 scsi_eh_restore_cmnd(cmd, &sc->ses); 1420 1421 cmd->SCp.Status = SAM_STAT_CHECK_CONDITION; 1422 1423 HOSTDATA(shpnt)->commands--; 1424 if (!HOSTDATA(shpnt)->commands) 1425 SETPORT(PORTA, 0); /* turn led off */ 1426 } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) { 1427 #if defined(AHA152X_STAT) 1428 HOSTDATA(shpnt)->busfree_with_check_condition++; 1429 #endif 1430 1431 if(!(DONE_SC->SCp.phase & not_issued)) { 1432 struct aha152x_scdata *sc; 1433 struct scsi_cmnd *ptr = DONE_SC; 1434 DONE_SC=NULL; 1435 1436 sc = SCDATA(ptr); 1437 /* It was allocated in aha152x_internal_queue? */ 1438 BUG_ON(!sc); 1439 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0); 1440 1441 DO_UNLOCK(flags); 1442 aha152x_internal_queue(ptr, NULL, check_condition, ptr->scsi_done); 1443 DO_LOCK(flags); 1444 } 1445 } 1446 1447 if(DONE_SC && DONE_SC->scsi_done) { 1448 struct scsi_cmnd *ptr = DONE_SC; 1449 DONE_SC=NULL; 1450 1451 /* turn led off, when no commands are in the driver */ 1452 HOSTDATA(shpnt)->commands--; 1453 if (!HOSTDATA(shpnt)->commands) 1454 SETPORT(PORTA, 0); /* turn led off */ 1455 1456 if(ptr->scsi_done != reset_done) { 1457 kfree(ptr->host_scribble); 1458 ptr->host_scribble=NULL; 1459 } 1460 1461 DO_UNLOCK(flags); 1462 ptr->scsi_done(ptr); 1463 DO_LOCK(flags); 1464 } 1465 1466 DONE_SC=NULL; 1467 #if defined(AHA152X_STAT) 1468 } else { 1469 HOSTDATA(shpnt)->busfree_without_done_command++; 1470 #endif 1471 } 1472 1473 if(ISSUE_SC) 1474 CURRENT_SC = remove_first_SC(&ISSUE_SC); 1475 1476 DO_UNLOCK(flags); 1477 1478 if(CURRENT_SC) { 1479 #if defined(AHA152X_STAT) 1480 action++; 1481 #endif 1482 CURRENT_SC->SCp.phase |= selecting; 1483 1484 /* clear selection timeout */ 1485 SETPORT(SSTAT1, SELTO); 1486 1487 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id); 1488 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER); 1489 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0)); 1490 } else { 1491 #if defined(AHA152X_STAT) 1492 HOSTDATA(shpnt)->busfree_without_new_command++; 1493 #endif 1494 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0); 1495 } 1496 1497 #if defined(AHA152X_STAT) 1498 if(!action) 1499 HOSTDATA(shpnt)->busfree_without_any_action++; 1500 #endif 1501 } 1502 1503 /* 1504 * Selection done (OUT) 1505 * - queue IDENTIFY message and SDTR to selected target for message out 1506 * (ATN asserted automagically via ENAUTOATNO in busfree()) 1507 */ 1508 static void seldo_run(struct Scsi_Host *shpnt) 1509 { 1510 SETPORT(SCSISIG, 0); 1511 SETPORT(SSTAT1, CLRBUSFREE); 1512 SETPORT(SSTAT1, CLRPHASECHG); 1513 1514 CURRENT_SC->SCp.phase &= ~(selecting|not_issued); 1515 1516 SETPORT(SCSISEQ, 0); 1517 1518 if (TESTLO(SSTAT0, SELDO)) { 1519 scmd_printk(KERN_ERR, CURRENT_SC, 1520 "aha152x: passing bus free condition\n"); 1521 done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT); 1522 return; 1523 } 1524 1525 SETPORT(SSTAT0, CLRSELDO); 1526 1527 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); 1528 1529 if (CURRENT_SC->SCp.phase & aborting) { 1530 ADDMSGO(ABORT); 1531 } else if (CURRENT_SC->SCp.phase & resetting) { 1532 ADDMSGO(BUS_DEVICE_RESET); 1533 } else if (SYNCNEG==0 && SYNCHRONOUS) { 1534 CURRENT_SC->SCp.phase |= syncneg; 1535 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8); 1536 SYNCNEG=1; /* negotiation in progress */ 1537 } 1538 1539 SETRATE(SYNCRATE); 1540 } 1541 1542 /* 1543 * Selection timeout 1544 * - return command to mid-level with failure cause 1545 * 1546 */ 1547 static void selto_run(struct Scsi_Host *shpnt) 1548 { 1549 SETPORT(SCSISEQ, 0); 1550 SETPORT(SSTAT1, CLRSELTIMO); 1551 1552 if (!CURRENT_SC) 1553 return; 1554 1555 CURRENT_SC->SCp.phase &= ~selecting; 1556 1557 if (CURRENT_SC->SCp.phase & aborted) 1558 done(shpnt, SAM_STAT_GOOD, DID_ABORT); 1559 else if (TESTLO(SSTAT0, SELINGO)) 1560 done(shpnt, SAM_STAT_GOOD, DID_BUS_BUSY); 1561 else 1562 /* ARBITRATION won, but SELECTION failed */ 1563 done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT); 1564 } 1565 1566 /* 1567 * Selection in done 1568 * - put current command back to issue queue 1569 * (reconnection of a disconnected nexus instead 1570 * of successful selection out) 1571 * 1572 */ 1573 static void seldi_run(struct Scsi_Host *shpnt) 1574 { 1575 int selid; 1576 int target; 1577 unsigned long flags; 1578 1579 SETPORT(SCSISIG, 0); 1580 SETPORT(SSTAT0, CLRSELDI); 1581 SETPORT(SSTAT1, CLRBUSFREE); 1582 SETPORT(SSTAT1, CLRPHASECHG); 1583 1584 if(CURRENT_SC) { 1585 if(!(CURRENT_SC->SCp.phase & not_issued)) 1586 scmd_printk(KERN_ERR, CURRENT_SC, 1587 "command should not have been issued yet\n"); 1588 1589 DO_LOCK(flags); 1590 append_SC(&ISSUE_SC, CURRENT_SC); 1591 DO_UNLOCK(flags); 1592 1593 CURRENT_SC = NULL; 1594 } 1595 1596 if (!DISCONNECTED_SC) 1597 return; 1598 1599 RECONN_TARGET=-1; 1600 1601 selid = GETPORT(SELID) & ~(1 << shpnt->this_id); 1602 1603 if (selid==0) { 1604 shost_printk(KERN_INFO, shpnt, 1605 "target id unknown (%02x)\n", selid); 1606 return; 1607 } 1608 1609 for(target=7; !(selid & (1 << target)); target--) 1610 ; 1611 1612 if(selid & ~(1 << target)) { 1613 shost_printk(KERN_INFO, shpnt, 1614 "multiple targets reconnected (%02x)\n", selid); 1615 } 1616 1617 1618 SETPORT(SCSIID, (shpnt->this_id << OID_) | target); 1619 SETPORT(SCSISEQ, 0); 1620 1621 SETRATE(HOSTDATA(shpnt)->syncrate[target]); 1622 1623 RECONN_TARGET=target; 1624 } 1625 1626 /* 1627 * message in phase 1628 * - handle initial message after reconnection to identify 1629 * reconnecting nexus 1630 * - queue command on DISCONNECTED_SC on DISCONNECT message 1631 * - set completed flag on COMMAND COMPLETE 1632 * (other completition code moved to busfree_run) 1633 * - handle response to SDTR 1634 * - clear synchronous transfer agreements on BUS RESET 1635 * 1636 * FIXME: what about SAVE POINTERS, RESTORE POINTERS? 1637 * 1638 */ 1639 static void msgi_run(struct Scsi_Host *shpnt) 1640 { 1641 for(;;) { 1642 int sstat1 = GETPORT(SSTAT1); 1643 1644 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT)) 1645 return; 1646 1647 if (TESTLO(SSTAT0, SPIORDY)) 1648 return; 1649 1650 ADDMSGI(GETPORT(SCSIDAT)); 1651 1652 if(!CURRENT_SC) { 1653 if(LASTSTATE!=seldi) { 1654 shost_printk(KERN_ERR, shpnt, 1655 "message in w/o current command" 1656 " not after reselection\n"); 1657 } 1658 1659 /* 1660 * Handle reselection 1661 */ 1662 if(!(MSGI(0) & IDENTIFY_BASE)) { 1663 shost_printk(KERN_ERR, shpnt, 1664 "target didn't identify after reselection\n"); 1665 continue; 1666 } 1667 1668 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f); 1669 1670 if (!CURRENT_SC) { 1671 show_queues(shpnt); 1672 shost_printk(KERN_ERR, shpnt, 1673 "no disconnected command" 1674 " for target %d/%d\n", 1675 RECONN_TARGET, MSGI(0) & 0x3f); 1676 continue; 1677 } 1678 1679 CURRENT_SC->SCp.Message = MSGI(0); 1680 CURRENT_SC->SCp.phase &= ~disconnected; 1681 1682 MSGILEN=0; 1683 1684 /* next message if any */ 1685 continue; 1686 } 1687 1688 CURRENT_SC->SCp.Message = MSGI(0); 1689 1690 switch (MSGI(0)) { 1691 case DISCONNECT: 1692 if (!RECONNECT) 1693 scmd_printk(KERN_WARNING, CURRENT_SC, 1694 "target was not allowed to disconnect\n"); 1695 1696 CURRENT_SC->SCp.phase |= disconnected; 1697 break; 1698 1699 case COMMAND_COMPLETE: 1700 CURRENT_SC->SCp.phase |= completed; 1701 break; 1702 1703 case MESSAGE_REJECT: 1704 if (SYNCNEG==1) { 1705 scmd_printk(KERN_INFO, CURRENT_SC, 1706 "Synchronous Data Transfer Request" 1707 " was rejected\n"); 1708 SYNCNEG=2; /* negotiation completed */ 1709 } else 1710 scmd_printk(KERN_INFO, CURRENT_SC, 1711 "inbound message (MESSAGE REJECT)\n"); 1712 break; 1713 1714 case SAVE_POINTERS: 1715 break; 1716 1717 case RESTORE_POINTERS: 1718 break; 1719 1720 case EXTENDED_MESSAGE: 1721 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) { 1722 /* not yet completed */ 1723 continue; 1724 } 1725 1726 switch (MSGI(2)) { 1727 case EXTENDED_SDTR: 1728 { 1729 long ticks; 1730 1731 if (MSGI(1) != 3) { 1732 scmd_printk(KERN_ERR, CURRENT_SC, 1733 "SDTR message length!=3\n"); 1734 break; 1735 } 1736 1737 if (!HOSTDATA(shpnt)->synchronous) 1738 break; 1739 1740 printk(INFO_LEAD, CMDINFO(CURRENT_SC)); 1741 spi_print_msg(&MSGI(0)); 1742 printk("\n"); 1743 1744 ticks = (MSGI(3) * 4 + 49) / 50; 1745 1746 if (syncneg) { 1747 /* negotiation in progress */ 1748 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) { 1749 ADDMSGO(MESSAGE_REJECT); 1750 scmd_printk(KERN_INFO, 1751 CURRENT_SC, 1752 "received Synchronous Data Transfer Request invalid - rejected\n"); 1753 break; 1754 } 1755 1756 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); 1757 } else if (ticks <= 9 && MSGI(4) >= 1) { 1758 ADDMSGO(EXTENDED_MESSAGE); 1759 ADDMSGO(3); 1760 ADDMSGO(EXTENDED_SDTR); 1761 if (ticks < 4) { 1762 ticks = 4; 1763 ADDMSGO(50); 1764 } else 1765 ADDMSGO(MSGI(3)); 1766 1767 if (MSGI(4) > 8) 1768 MSGI(4) = 8; 1769 1770 ADDMSGO(MSGI(4)); 1771 1772 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); 1773 } else { 1774 /* requested SDTR is too slow, do it asynchronously */ 1775 scmd_printk(KERN_INFO, 1776 CURRENT_SC, 1777 "Synchronous Data Transfer Request too slow - Rejecting\n"); 1778 ADDMSGO(MESSAGE_REJECT); 1779 } 1780 1781 /* negotiation completed */ 1782 SYNCNEG=2; 1783 SETRATE(SYNCRATE); 1784 } 1785 break; 1786 1787 case BUS_DEVICE_RESET: 1788 { 1789 int i; 1790 1791 for(i=0; i<8; i++) { 1792 HOSTDATA(shpnt)->syncrate[i]=0; 1793 HOSTDATA(shpnt)->syncneg[i]=0; 1794 } 1795 1796 } 1797 break; 1798 1799 case EXTENDED_MODIFY_DATA_POINTER: 1800 case EXTENDED_EXTENDED_IDENTIFY: 1801 case EXTENDED_WDTR: 1802 default: 1803 ADDMSGO(MESSAGE_REJECT); 1804 break; 1805 } 1806 break; 1807 } 1808 1809 MSGILEN=0; 1810 } 1811 } 1812 1813 static void msgi_end(struct Scsi_Host *shpnt) 1814 { 1815 if(MSGILEN>0) 1816 scmd_printk(KERN_WARNING, CURRENT_SC, 1817 "target left before message completed (%d)\n", 1818 MSGILEN); 1819 1820 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) 1821 SETPORT(SCSISIG, P_MSGI | SIG_ATNO); 1822 } 1823 1824 /* 1825 * message out phase 1826 * 1827 */ 1828 static void msgo_init(struct Scsi_Host *shpnt) 1829 { 1830 if(MSGOLEN==0) { 1831 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) { 1832 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); 1833 } else { 1834 scmd_printk(KERN_INFO, CURRENT_SC, 1835 "unexpected MESSAGE OUT phase; rejecting\n"); 1836 ADDMSGO(MESSAGE_REJECT); 1837 } 1838 } 1839 1840 } 1841 1842 /* 1843 * message out phase 1844 * 1845 */ 1846 static void msgo_run(struct Scsi_Host *shpnt) 1847 { 1848 while(MSGO_I<MSGOLEN) { 1849 if (TESTLO(SSTAT0, SPIORDY)) 1850 return; 1851 1852 if (MSGO_I==MSGOLEN-1) { 1853 /* Leave MESSAGE OUT after transfer */ 1854 SETPORT(SSTAT1, CLRATNO); 1855 } 1856 1857 1858 if (MSGO(MSGO_I) & IDENTIFY_BASE) 1859 CURRENT_SC->SCp.phase |= identified; 1860 1861 if (MSGO(MSGO_I)==ABORT) 1862 CURRENT_SC->SCp.phase |= aborted; 1863 1864 if (MSGO(MSGO_I)==BUS_DEVICE_RESET) 1865 CURRENT_SC->SCp.phase |= resetted; 1866 1867 SETPORT(SCSIDAT, MSGO(MSGO_I++)); 1868 } 1869 } 1870 1871 static void msgo_end(struct Scsi_Host *shpnt) 1872 { 1873 if(MSGO_I<MSGOLEN) { 1874 scmd_printk(KERN_ERR, CURRENT_SC, 1875 "message sent incompletely (%d/%d)\n", 1876 MSGO_I, MSGOLEN); 1877 if(SYNCNEG==1) { 1878 scmd_printk(KERN_INFO, CURRENT_SC, 1879 "Synchronous Data Transfer Request was rejected\n"); 1880 SYNCNEG=2; 1881 } 1882 } 1883 1884 MSGO_I = 0; 1885 MSGOLEN = 0; 1886 } 1887 1888 /* 1889 * command phase 1890 * 1891 */ 1892 static void cmd_init(struct Scsi_Host *shpnt) 1893 { 1894 if (CURRENT_SC->SCp.sent_command) { 1895 scmd_printk(KERN_ERR, CURRENT_SC, 1896 "command already sent\n"); 1897 done(shpnt, SAM_STAT_GOOD, DID_ERROR); 1898 return; 1899 } 1900 1901 CMD_I=0; 1902 } 1903 1904 /* 1905 * command phase 1906 * 1907 */ 1908 static void cmd_run(struct Scsi_Host *shpnt) 1909 { 1910 while(CMD_I<CURRENT_SC->cmd_len) { 1911 if (TESTLO(SSTAT0, SPIORDY)) 1912 return; 1913 1914 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]); 1915 } 1916 } 1917 1918 static void cmd_end(struct Scsi_Host *shpnt) 1919 { 1920 if(CMD_I<CURRENT_SC->cmd_len) 1921 scmd_printk(KERN_ERR, CURRENT_SC, 1922 "command sent incompletely (%d/%d)\n", 1923 CMD_I, CURRENT_SC->cmd_len); 1924 else 1925 CURRENT_SC->SCp.sent_command++; 1926 } 1927 1928 /* 1929 * status phase 1930 * 1931 */ 1932 static void status_run(struct Scsi_Host *shpnt) 1933 { 1934 if (TESTLO(SSTAT0, SPIORDY)) 1935 return; 1936 1937 CURRENT_SC->SCp.Status = GETPORT(SCSIDAT); 1938 1939 } 1940 1941 /* 1942 * data in phase 1943 * 1944 */ 1945 static void datai_init(struct Scsi_Host *shpnt) 1946 { 1947 SETPORT(DMACNTRL0, RSTFIFO); 1948 SETPORT(DMACNTRL0, RSTFIFO|ENDMA); 1949 1950 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 1951 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); 1952 1953 SETPORT(SIMODE0, 0); 1954 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE); 1955 1956 DATA_LEN=0; 1957 } 1958 1959 static void datai_run(struct Scsi_Host *shpnt) 1960 { 1961 unsigned long the_time; 1962 int fifodata, data_count; 1963 1964 /* 1965 * loop while the phase persists or the fifos are not empty 1966 * 1967 */ 1968 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) { 1969 /* FIXME: maybe this should be done by setting up 1970 * STCNT to trigger ENSWRAP interrupt, instead of 1971 * polling for DFIFOFULL 1972 */ 1973 the_time=jiffies + 100*HZ; 1974 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time)) 1975 barrier(); 1976 1977 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) { 1978 scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n"); 1979 break; 1980 } 1981 1982 if(TESTHI(DMASTAT, DFIFOFULL)) { 1983 fifodata = 128; 1984 } else { 1985 the_time=jiffies + 100*HZ; 1986 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time)) 1987 barrier(); 1988 1989 if(TESTLO(SSTAT2, SEMPTY)) { 1990 scmd_printk(KERN_ERR, CURRENT_SC, 1991 "datai sempty timeout"); 1992 break; 1993 } 1994 1995 fifodata = GETPORT(FIFOSTAT); 1996 } 1997 1998 if(CURRENT_SC->SCp.this_residual>0) { 1999 while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) { 2000 data_count = fifodata > CURRENT_SC->SCp.this_residual ? 2001 CURRENT_SC->SCp.this_residual : 2002 fifodata; 2003 fifodata -= data_count; 2004 2005 if (data_count & 1) { 2006 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2007 *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT); 2008 CURRENT_SC->SCp.this_residual--; 2009 DATA_LEN++; 2010 SETPORT(DMACNTRL0, ENDMA); 2011 } 2012 2013 if (data_count > 1) { 2014 data_count >>= 1; 2015 insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); 2016 CURRENT_SC->SCp.ptr += 2 * data_count; 2017 CURRENT_SC->SCp.this_residual -= 2 * data_count; 2018 DATA_LEN += 2 * data_count; 2019 } 2020 2021 if (CURRENT_SC->SCp.this_residual == 0 && 2022 !sg_is_last(CURRENT_SC->SCp.buffer)) { 2023 /* advance to next buffer */ 2024 CURRENT_SC->SCp.buffer = sg_next(CURRENT_SC->SCp.buffer); 2025 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer); 2026 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; 2027 } 2028 } 2029 } else if (fifodata > 0) { 2030 scmd_printk(KERN_ERR, CURRENT_SC, 2031 "no buffers left for %d(%d) bytes" 2032 " (data overrun!?)\n", 2033 fifodata, GETPORT(FIFOSTAT)); 2034 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2035 while(fifodata>0) { 2036 GETPORT(DATAPORT); 2037 fifodata--; 2038 DATA_LEN++; 2039 } 2040 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2041 } 2042 } 2043 2044 if(TESTLO(DMASTAT, INTSTAT) || 2045 TESTLO(DMASTAT, DFIFOEMP) || 2046 TESTLO(SSTAT2, SEMPTY) || 2047 GETPORT(FIFOSTAT)>0) { 2048 /* 2049 * something went wrong, if there's something left in the fifos 2050 * or the phase didn't change 2051 */ 2052 scmd_printk(KERN_ERR, CURRENT_SC, 2053 "fifos should be empty and phase should have changed\n"); 2054 } 2055 2056 if(DATA_LEN!=GETSTCNT()) { 2057 scmd_printk(KERN_ERR, CURRENT_SC, 2058 "manual transfer count differs from automatic " 2059 "(count=%d;stcnt=%d;diff=%d;fifostat=%d)", 2060 DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, 2061 GETPORT(FIFOSTAT)); 2062 mdelay(10000); 2063 } 2064 } 2065 2066 static void datai_end(struct Scsi_Host *shpnt) 2067 { 2068 CMD_INC_RESID(CURRENT_SC, -GETSTCNT()); 2069 2070 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 2071 SETPORT(DMACNTRL0, 0); 2072 } 2073 2074 /* 2075 * data out phase 2076 * 2077 */ 2078 static void datao_init(struct Scsi_Host *shpnt) 2079 { 2080 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO); 2081 SETPORT(DMACNTRL0, WRITE_READ | ENDMA); 2082 2083 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 2084 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); 2085 2086 SETPORT(SIMODE0, 0); 2087 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE ); 2088 2089 DATA_LEN = scsi_get_resid(CURRENT_SC); 2090 } 2091 2092 static void datao_run(struct Scsi_Host *shpnt) 2093 { 2094 unsigned long the_time; 2095 int data_count; 2096 2097 /* until phase changes or all data sent */ 2098 while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) { 2099 data_count = 128; 2100 if(data_count > CURRENT_SC->SCp.this_residual) 2101 data_count=CURRENT_SC->SCp.this_residual; 2102 2103 if(TESTLO(DMASTAT, DFIFOEMP)) { 2104 scmd_printk(KERN_ERR, CURRENT_SC, 2105 "datao fifo not empty (%d)", 2106 GETPORT(FIFOSTAT)); 2107 break; 2108 } 2109 2110 if(data_count & 1) { 2111 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT); 2112 SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++); 2113 CURRENT_SC->SCp.this_residual--; 2114 CMD_INC_RESID(CURRENT_SC, -1); 2115 SETPORT(DMACNTRL0,WRITE_READ|ENDMA); 2116 } 2117 2118 if(data_count > 1) { 2119 data_count >>= 1; 2120 outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); 2121 CURRENT_SC->SCp.ptr += 2 * data_count; 2122 CURRENT_SC->SCp.this_residual -= 2 * data_count; 2123 CMD_INC_RESID(CURRENT_SC, -2 * data_count); 2124 } 2125 2126 if (CURRENT_SC->SCp.this_residual == 0 && 2127 !sg_is_last(CURRENT_SC->SCp.buffer)) { 2128 /* advance to next buffer */ 2129 CURRENT_SC->SCp.buffer = sg_next(CURRENT_SC->SCp.buffer); 2130 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer); 2131 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; 2132 } 2133 2134 the_time=jiffies + 100*HZ; 2135 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time)) 2136 barrier(); 2137 2138 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) { 2139 scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n"); 2140 break; 2141 } 2142 } 2143 } 2144 2145 static void datao_end(struct Scsi_Host *shpnt) 2146 { 2147 if(TESTLO(DMASTAT, DFIFOEMP)) { 2148 u32 datao_cnt = GETSTCNT(); 2149 int datao_out = DATA_LEN - scsi_get_resid(CURRENT_SC); 2150 int done; 2151 struct scatterlist *sg = scsi_sglist(CURRENT_SC); 2152 2153 CMD_INC_RESID(CURRENT_SC, datao_out - datao_cnt); 2154 2155 done = scsi_bufflen(CURRENT_SC) - scsi_get_resid(CURRENT_SC); 2156 /* Locate the first SG entry not yet sent */ 2157 while (done > 0 && !sg_is_last(sg)) { 2158 if (done < sg->length) 2159 break; 2160 done -= sg->length; 2161 sg = sg_next(sg); 2162 } 2163 2164 CURRENT_SC->SCp.buffer = sg; 2165 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) + done; 2166 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length - 2167 done; 2168 } 2169 2170 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 2171 SETPORT(SXFRCTL0, CH1); 2172 2173 SETPORT(DMACNTRL0, 0); 2174 } 2175 2176 /* 2177 * figure out what state we're in 2178 * 2179 */ 2180 static int update_state(struct Scsi_Host *shpnt) 2181 { 2182 int dataphase=0; 2183 unsigned int stat0 = GETPORT(SSTAT0); 2184 unsigned int stat1 = GETPORT(SSTAT1); 2185 2186 PREVSTATE = STATE; 2187 STATE=unknown; 2188 2189 if(stat1 & SCSIRSTI) { 2190 STATE=rsti; 2191 SETPORT(SCSISEQ,0); 2192 SETPORT(SSTAT1,SCSIRSTI); 2193 } else if (stat0 & SELDI && PREVSTATE == busfree) { 2194 STATE=seldi; 2195 } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) { 2196 STATE=seldo; 2197 } else if(stat1 & SELTO) { 2198 STATE=selto; 2199 } else if(stat1 & BUSFREE) { 2200 STATE=busfree; 2201 SETPORT(SSTAT1,BUSFREE); 2202 } else if(stat1 & SCSIPERR) { 2203 STATE=parerr; 2204 SETPORT(SSTAT1,SCSIPERR); 2205 } else if(stat1 & REQINIT) { 2206 switch(GETPORT(SCSISIG) & P_MASK) { 2207 case P_MSGI: STATE=msgi; break; 2208 case P_MSGO: STATE=msgo; break; 2209 case P_DATAO: STATE=datao; break; 2210 case P_DATAI: STATE=datai; break; 2211 case P_STATUS: STATE=status; break; 2212 case P_CMD: STATE=cmd; break; 2213 } 2214 dataphase=1; 2215 } 2216 2217 if((stat0 & SELDI) && STATE!=seldi && !dataphase) { 2218 scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?"); 2219 } 2220 2221 if(STATE!=PREVSTATE) { 2222 LASTSTATE=PREVSTATE; 2223 } 2224 2225 return dataphase; 2226 } 2227 2228 /* 2229 * handle parity error 2230 * 2231 * FIXME: in which phase? 2232 * 2233 */ 2234 static void parerr_run(struct Scsi_Host *shpnt) 2235 { 2236 scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n"); 2237 done(shpnt, SAM_STAT_GOOD, DID_PARITY); 2238 } 2239 2240 /* 2241 * handle reset in 2242 * 2243 */ 2244 static void rsti_run(struct Scsi_Host *shpnt) 2245 { 2246 struct scsi_cmnd *ptr; 2247 2248 shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n"); 2249 2250 ptr=DISCONNECTED_SC; 2251 while(ptr) { 2252 struct scsi_cmnd *next = SCNEXT(ptr); 2253 2254 if (!ptr->device->soft_reset) { 2255 remove_SC(&DISCONNECTED_SC, ptr); 2256 2257 kfree(ptr->host_scribble); 2258 ptr->host_scribble=NULL; 2259 2260 set_host_byte(ptr, DID_RESET); 2261 ptr->scsi_done(ptr); 2262 } 2263 2264 ptr = next; 2265 } 2266 2267 if(CURRENT_SC && !CURRENT_SC->device->soft_reset) 2268 done(shpnt, SAM_STAT_GOOD, DID_RESET); 2269 } 2270 2271 2272 /* 2273 * bottom-half handler 2274 * 2275 */ 2276 static void is_complete(struct Scsi_Host *shpnt) 2277 { 2278 int dataphase; 2279 unsigned long flags; 2280 int pending; 2281 2282 if(!shpnt) 2283 return; 2284 2285 DO_LOCK(flags); 2286 2287 if( HOSTDATA(shpnt)->service==0 ) { 2288 DO_UNLOCK(flags); 2289 return; 2290 } 2291 2292 HOSTDATA(shpnt)->service = 0; 2293 2294 if(HOSTDATA(shpnt)->in_intr) { 2295 DO_UNLOCK(flags); 2296 /* aha152x_error never returns.. */ 2297 aha152x_error(shpnt, "bottom-half already running!?"); 2298 } 2299 HOSTDATA(shpnt)->in_intr++; 2300 2301 /* 2302 * loop while there are interrupt conditions pending 2303 * 2304 */ 2305 do { 2306 unsigned long start = jiffies; 2307 DO_UNLOCK(flags); 2308 2309 dataphase=update_state(shpnt); 2310 2311 /* 2312 * end previous state 2313 * 2314 */ 2315 if(PREVSTATE!=STATE && states[PREVSTATE].end) 2316 states[PREVSTATE].end(shpnt); 2317 2318 /* 2319 * disable SPIO mode if previous phase used it 2320 * and this one doesn't 2321 * 2322 */ 2323 if(states[PREVSTATE].spio && !states[STATE].spio) { 2324 SETPORT(SXFRCTL0, CH1); 2325 SETPORT(DMACNTRL0, 0); 2326 if(CURRENT_SC) 2327 CURRENT_SC->SCp.phase &= ~spiordy; 2328 } 2329 2330 /* 2331 * accept current dataphase phase 2332 * 2333 */ 2334 if(dataphase) { 2335 SETPORT(SSTAT0, REQINIT); 2336 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK); 2337 SETPORT(SSTAT1, PHASECHG); 2338 } 2339 2340 /* 2341 * enable SPIO mode if previous didn't use it 2342 * and this one does 2343 * 2344 */ 2345 if(!states[PREVSTATE].spio && states[STATE].spio) { 2346 SETPORT(DMACNTRL0, 0); 2347 SETPORT(SXFRCTL0, CH1|SPIOEN); 2348 if(CURRENT_SC) 2349 CURRENT_SC->SCp.phase |= spiordy; 2350 } 2351 2352 /* 2353 * initialize for new state 2354 * 2355 */ 2356 if(PREVSTATE!=STATE && states[STATE].init) 2357 states[STATE].init(shpnt); 2358 2359 /* 2360 * handle current state 2361 * 2362 */ 2363 if(states[STATE].run) 2364 states[STATE].run(shpnt); 2365 else 2366 scmd_printk(KERN_ERR, CURRENT_SC, 2367 "unexpected state (%x)\n", STATE); 2368 2369 /* 2370 * setup controller to interrupt on 2371 * the next expected condition and 2372 * loop if it's already there 2373 * 2374 */ 2375 DO_LOCK(flags); 2376 pending=setup_expected_interrupts(shpnt); 2377 #if defined(AHA152X_STAT) 2378 HOSTDATA(shpnt)->count[STATE]++; 2379 if(PREVSTATE!=STATE) 2380 HOSTDATA(shpnt)->count_trans[STATE]++; 2381 HOSTDATA(shpnt)->time[STATE] += jiffies-start; 2382 #endif 2383 2384 } while(pending); 2385 2386 /* 2387 * enable interrupts and leave bottom-half 2388 * 2389 */ 2390 HOSTDATA(shpnt)->in_intr--; 2391 SETBITS(DMACNTRL0, INTEN); 2392 DO_UNLOCK(flags); 2393 } 2394 2395 2396 /* 2397 * Dump the current driver status and panic 2398 */ 2399 static void aha152x_error(struct Scsi_Host *shpnt, char *msg) 2400 { 2401 shost_printk(KERN_EMERG, shpnt, "%s\n", msg); 2402 show_queues(shpnt); 2403 panic("aha152x panic\n"); 2404 } 2405 2406 /* 2407 * display enabled interrupts 2408 */ 2409 static void disp_enintr(struct Scsi_Host *shpnt) 2410 { 2411 int s0, s1; 2412 2413 s0 = GETPORT(SIMODE0); 2414 s1 = GETPORT(SIMODE1); 2415 2416 shost_printk(KERN_DEBUG, shpnt, 2417 "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n", 2418 (s0 & ENSELDO) ? "ENSELDO " : "", 2419 (s0 & ENSELDI) ? "ENSELDI " : "", 2420 (s0 & ENSELINGO) ? "ENSELINGO " : "", 2421 (s0 & ENSWRAP) ? "ENSWRAP " : "", 2422 (s0 & ENSDONE) ? "ENSDONE " : "", 2423 (s0 & ENSPIORDY) ? "ENSPIORDY " : "", 2424 (s0 & ENDMADONE) ? "ENDMADONE " : "", 2425 (s1 & ENSELTIMO) ? "ENSELTIMO " : "", 2426 (s1 & ENATNTARG) ? "ENATNTARG " : "", 2427 (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "", 2428 (s1 & ENBUSFREE) ? "ENBUSFREE " : "", 2429 (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "", 2430 (s1 & ENPHASECHG) ? "ENPHASECHG " : "", 2431 (s1 & ENREQINIT) ? "ENREQINIT " : ""); 2432 } 2433 2434 /* 2435 * Show the command data of a command 2436 */ 2437 static void show_command(struct scsi_cmnd *ptr) 2438 { 2439 scsi_print_command(ptr); 2440 scmd_printk(KERN_DEBUG, ptr, 2441 "request_bufflen=%d; resid=%d; " 2442 "phase |%s%s%s%s%s%s%s%s%s; next=0x%p", 2443 scsi_bufflen(ptr), scsi_get_resid(ptr), 2444 (ptr->SCp.phase & not_issued) ? "not issued|" : "", 2445 (ptr->SCp.phase & selecting) ? "selecting|" : "", 2446 (ptr->SCp.phase & identified) ? "identified|" : "", 2447 (ptr->SCp.phase & disconnected) ? "disconnected|" : "", 2448 (ptr->SCp.phase & completed) ? "completed|" : "", 2449 (ptr->SCp.phase & spiordy) ? "spiordy|" : "", 2450 (ptr->SCp.phase & syncneg) ? "syncneg|" : "", 2451 (ptr->SCp.phase & aborted) ? "aborted|" : "", 2452 (ptr->SCp.phase & resetted) ? "resetted|" : "", 2453 (SCDATA(ptr)) ? SCNEXT(ptr) : NULL); 2454 } 2455 2456 /* 2457 * Dump the queued data 2458 */ 2459 static void show_queues(struct Scsi_Host *shpnt) 2460 { 2461 struct scsi_cmnd *ptr; 2462 unsigned long flags; 2463 2464 DO_LOCK(flags); 2465 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n"); 2466 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) 2467 show_command(ptr); 2468 DO_UNLOCK(flags); 2469 2470 printk(KERN_DEBUG "current_SC:\n"); 2471 if (CURRENT_SC) 2472 show_command(CURRENT_SC); 2473 else 2474 printk(KERN_DEBUG "none\n"); 2475 2476 printk(KERN_DEBUG "disconnected_SC:\n"); 2477 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL) 2478 show_command(ptr); 2479 2480 disp_enintr(shpnt); 2481 } 2482 2483 static void get_command(struct seq_file *m, struct scsi_cmnd * ptr) 2484 { 2485 int i; 2486 2487 seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ", 2488 ptr, ptr->device->id, (u8)ptr->device->lun); 2489 2490 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++) 2491 seq_printf(m, "0x%02x ", ptr->cmnd[i]); 2492 2493 seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |", 2494 scsi_get_resid(ptr), ptr->SCp.this_residual, 2495 sg_nents(ptr->SCp.buffer) - 1); 2496 2497 if (ptr->SCp.phase & not_issued) 2498 seq_puts(m, "not issued|"); 2499 if (ptr->SCp.phase & selecting) 2500 seq_puts(m, "selecting|"); 2501 if (ptr->SCp.phase & disconnected) 2502 seq_puts(m, "disconnected|"); 2503 if (ptr->SCp.phase & aborted) 2504 seq_puts(m, "aborted|"); 2505 if (ptr->SCp.phase & identified) 2506 seq_puts(m, "identified|"); 2507 if (ptr->SCp.phase & completed) 2508 seq_puts(m, "completed|"); 2509 if (ptr->SCp.phase & spiordy) 2510 seq_puts(m, "spiordy|"); 2511 if (ptr->SCp.phase & syncneg) 2512 seq_puts(m, "syncneg|"); 2513 seq_printf(m, "; next=0x%p\n", SCNEXT(ptr)); 2514 } 2515 2516 static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt) 2517 { 2518 int s; 2519 2520 seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name); 2521 2522 s = GETPORT(SCSISEQ); 2523 seq_puts(m, "SCSISEQ( "); 2524 if (s & TEMODEO) 2525 seq_puts(m, "TARGET MODE "); 2526 if (s & ENSELO) 2527 seq_puts(m, "SELO "); 2528 if (s & ENSELI) 2529 seq_puts(m, "SELI "); 2530 if (s & ENRESELI) 2531 seq_puts(m, "RESELI "); 2532 if (s & ENAUTOATNO) 2533 seq_puts(m, "AUTOATNO "); 2534 if (s & ENAUTOATNI) 2535 seq_puts(m, "AUTOATNI "); 2536 if (s & ENAUTOATNP) 2537 seq_puts(m, "AUTOATNP "); 2538 if (s & SCSIRSTO) 2539 seq_puts(m, "SCSIRSTO "); 2540 seq_puts(m, ");"); 2541 2542 seq_puts(m, " SCSISIG("); 2543 s = GETPORT(SCSISIG); 2544 switch (s & P_MASK) { 2545 case P_DATAO: 2546 seq_puts(m, "DATA OUT"); 2547 break; 2548 case P_DATAI: 2549 seq_puts(m, "DATA IN"); 2550 break; 2551 case P_CMD: 2552 seq_puts(m, "COMMAND"); 2553 break; 2554 case P_STATUS: 2555 seq_puts(m, "STATUS"); 2556 break; 2557 case P_MSGO: 2558 seq_puts(m, "MESSAGE OUT"); 2559 break; 2560 case P_MSGI: 2561 seq_puts(m, "MESSAGE IN"); 2562 break; 2563 default: 2564 seq_puts(m, "*invalid*"); 2565 break; 2566 } 2567 2568 seq_puts(m, "); "); 2569 2570 seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); 2571 2572 seq_puts(m, "SSTAT( "); 2573 s = GETPORT(SSTAT0); 2574 if (s & TARGET) 2575 seq_puts(m, "TARGET "); 2576 if (s & SELDO) 2577 seq_puts(m, "SELDO "); 2578 if (s & SELDI) 2579 seq_puts(m, "SELDI "); 2580 if (s & SELINGO) 2581 seq_puts(m, "SELINGO "); 2582 if (s & SWRAP) 2583 seq_puts(m, "SWRAP "); 2584 if (s & SDONE) 2585 seq_puts(m, "SDONE "); 2586 if (s & SPIORDY) 2587 seq_puts(m, "SPIORDY "); 2588 if (s & DMADONE) 2589 seq_puts(m, "DMADONE "); 2590 2591 s = GETPORT(SSTAT1); 2592 if (s & SELTO) 2593 seq_puts(m, "SELTO "); 2594 if (s & ATNTARG) 2595 seq_puts(m, "ATNTARG "); 2596 if (s & SCSIRSTI) 2597 seq_puts(m, "SCSIRSTI "); 2598 if (s & PHASEMIS) 2599 seq_puts(m, "PHASEMIS "); 2600 if (s & BUSFREE) 2601 seq_puts(m, "BUSFREE "); 2602 if (s & SCSIPERR) 2603 seq_puts(m, "SCSIPERR "); 2604 if (s & PHASECHG) 2605 seq_puts(m, "PHASECHG "); 2606 if (s & REQINIT) 2607 seq_puts(m, "REQINIT "); 2608 seq_puts(m, "); "); 2609 2610 2611 seq_puts(m, "SSTAT( "); 2612 2613 s = GETPORT(SSTAT0) & GETPORT(SIMODE0); 2614 2615 if (s & TARGET) 2616 seq_puts(m, "TARGET "); 2617 if (s & SELDO) 2618 seq_puts(m, "SELDO "); 2619 if (s & SELDI) 2620 seq_puts(m, "SELDI "); 2621 if (s & SELINGO) 2622 seq_puts(m, "SELINGO "); 2623 if (s & SWRAP) 2624 seq_puts(m, "SWRAP "); 2625 if (s & SDONE) 2626 seq_puts(m, "SDONE "); 2627 if (s & SPIORDY) 2628 seq_puts(m, "SPIORDY "); 2629 if (s & DMADONE) 2630 seq_puts(m, "DMADONE "); 2631 2632 s = GETPORT(SSTAT1) & GETPORT(SIMODE1); 2633 2634 if (s & SELTO) 2635 seq_puts(m, "SELTO "); 2636 if (s & ATNTARG) 2637 seq_puts(m, "ATNTARG "); 2638 if (s & SCSIRSTI) 2639 seq_puts(m, "SCSIRSTI "); 2640 if (s & PHASEMIS) 2641 seq_puts(m, "PHASEMIS "); 2642 if (s & BUSFREE) 2643 seq_puts(m, "BUSFREE "); 2644 if (s & SCSIPERR) 2645 seq_puts(m, "SCSIPERR "); 2646 if (s & PHASECHG) 2647 seq_puts(m, "PHASECHG "); 2648 if (s & REQINIT) 2649 seq_puts(m, "REQINIT "); 2650 seq_puts(m, "); "); 2651 2652 seq_puts(m, "SXFRCTL0( "); 2653 2654 s = GETPORT(SXFRCTL0); 2655 if (s & SCSIEN) 2656 seq_puts(m, "SCSIEN "); 2657 if (s & DMAEN) 2658 seq_puts(m, "DMAEN "); 2659 if (s & CH1) 2660 seq_puts(m, "CH1 "); 2661 if (s & CLRSTCNT) 2662 seq_puts(m, "CLRSTCNT "); 2663 if (s & SPIOEN) 2664 seq_puts(m, "SPIOEN "); 2665 if (s & CLRCH1) 2666 seq_puts(m, "CLRCH1 "); 2667 seq_puts(m, "); "); 2668 2669 seq_puts(m, "SIGNAL( "); 2670 2671 s = GETPORT(SCSISIG); 2672 if (s & SIG_ATNI) 2673 seq_puts(m, "ATNI "); 2674 if (s & SIG_SELI) 2675 seq_puts(m, "SELI "); 2676 if (s & SIG_BSYI) 2677 seq_puts(m, "BSYI "); 2678 if (s & SIG_REQI) 2679 seq_puts(m, "REQI "); 2680 if (s & SIG_ACKI) 2681 seq_puts(m, "ACKI "); 2682 seq_puts(m, "); "); 2683 2684 seq_printf(m, "SELID(%02x), ", GETPORT(SELID)); 2685 2686 seq_printf(m, "STCNT(%d), ", GETSTCNT()); 2687 2688 seq_puts(m, "SSTAT2( "); 2689 2690 s = GETPORT(SSTAT2); 2691 if (s & SOFFSET) 2692 seq_puts(m, "SOFFSET "); 2693 if (s & SEMPTY) 2694 seq_puts(m, "SEMPTY "); 2695 if (s & SFULL) 2696 seq_puts(m, "SFULL "); 2697 seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT)); 2698 2699 s = GETPORT(SSTAT3); 2700 seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f); 2701 2702 seq_puts(m, "SSTAT4( "); 2703 s = GETPORT(SSTAT4); 2704 if (s & SYNCERR) 2705 seq_puts(m, "SYNCERR "); 2706 if (s & FWERR) 2707 seq_puts(m, "FWERR "); 2708 if (s & FRERR) 2709 seq_puts(m, "FRERR "); 2710 seq_puts(m, "); "); 2711 2712 seq_puts(m, "DMACNTRL0( "); 2713 s = GETPORT(DMACNTRL0); 2714 seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT"); 2715 seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO"); 2716 seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ"); 2717 if (s & ENDMA) 2718 seq_puts(m, "ENDMA "); 2719 if (s & INTEN) 2720 seq_puts(m, "INTEN "); 2721 if (s & RSTFIFO) 2722 seq_puts(m, "RSTFIFO "); 2723 if (s & SWINT) 2724 seq_puts(m, "SWINT "); 2725 seq_puts(m, "); "); 2726 2727 seq_puts(m, "DMASTAT( "); 2728 s = GETPORT(DMASTAT); 2729 if (s & ATDONE) 2730 seq_puts(m, "ATDONE "); 2731 if (s & WORDRDY) 2732 seq_puts(m, "WORDRDY "); 2733 if (s & DFIFOFULL) 2734 seq_puts(m, "DFIFOFULL "); 2735 if (s & DFIFOEMP) 2736 seq_puts(m, "DFIFOEMP "); 2737 seq_puts(m, ")\n"); 2738 2739 seq_puts(m, "enabled interrupts( "); 2740 2741 s = GETPORT(SIMODE0); 2742 if (s & ENSELDO) 2743 seq_puts(m, "ENSELDO "); 2744 if (s & ENSELDI) 2745 seq_puts(m, "ENSELDI "); 2746 if (s & ENSELINGO) 2747 seq_puts(m, "ENSELINGO "); 2748 if (s & ENSWRAP) 2749 seq_puts(m, "ENSWRAP "); 2750 if (s & ENSDONE) 2751 seq_puts(m, "ENSDONE "); 2752 if (s & ENSPIORDY) 2753 seq_puts(m, "ENSPIORDY "); 2754 if (s & ENDMADONE) 2755 seq_puts(m, "ENDMADONE "); 2756 2757 s = GETPORT(SIMODE1); 2758 if (s & ENSELTIMO) 2759 seq_puts(m, "ENSELTIMO "); 2760 if (s & ENATNTARG) 2761 seq_puts(m, "ENATNTARG "); 2762 if (s & ENPHASEMIS) 2763 seq_puts(m, "ENPHASEMIS "); 2764 if (s & ENBUSFREE) 2765 seq_puts(m, "ENBUSFREE "); 2766 if (s & ENSCSIPERR) 2767 seq_puts(m, "ENSCSIPERR "); 2768 if (s & ENPHASECHG) 2769 seq_puts(m, "ENPHASECHG "); 2770 if (s & ENREQINIT) 2771 seq_puts(m, "ENREQINIT "); 2772 seq_puts(m, ")\n"); 2773 } 2774 2775 static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length) 2776 { 2777 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0) 2778 return -EINVAL; 2779 2780 #if defined(AHA152X_STAT) 2781 if(length>13 && strncmp("reset", buffer+8, 5)==0) { 2782 int i; 2783 2784 HOSTDATA(shpnt)->total_commands=0; 2785 HOSTDATA(shpnt)->disconnections=0; 2786 HOSTDATA(shpnt)->busfree_without_any_action=0; 2787 HOSTDATA(shpnt)->busfree_without_old_command=0; 2788 HOSTDATA(shpnt)->busfree_without_new_command=0; 2789 HOSTDATA(shpnt)->busfree_without_done_command=0; 2790 HOSTDATA(shpnt)->busfree_with_check_condition=0; 2791 for (i = idle; i<maxstate; i++) { 2792 HOSTDATA(shpnt)->count[i]=0; 2793 HOSTDATA(shpnt)->count_trans[i]=0; 2794 HOSTDATA(shpnt)->time[i]=0; 2795 } 2796 2797 shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n"); 2798 2799 } else 2800 #endif 2801 { 2802 return -EINVAL; 2803 } 2804 2805 2806 return length; 2807 } 2808 2809 static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt) 2810 { 2811 int i; 2812 struct scsi_cmnd *ptr; 2813 unsigned long flags; 2814 2815 seq_puts(m, AHA152X_REVID "\n"); 2816 2817 seq_printf(m, "ioports 0x%04lx to 0x%04lx\n", 2818 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1); 2819 seq_printf(m, "interrupt 0x%02x\n", shpnt->irq); 2820 seq_printf(m, "disconnection/reconnection %s\n", 2821 RECONNECT ? "enabled" : "disabled"); 2822 seq_printf(m, "parity checking %s\n", 2823 PARITY ? "enabled" : "disabled"); 2824 seq_printf(m, "synchronous transfers %s\n", 2825 SYNCHRONOUS ? "enabled" : "disabled"); 2826 seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands); 2827 2828 if(SYNCHRONOUS) { 2829 seq_puts(m, "synchronously operating targets (tick=50 ns):\n"); 2830 for (i = 0; i < 8; i++) 2831 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f) 2832 seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n", 2833 i, 2834 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2), 2835 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50, 2836 HOSTDATA(shpnt)->syncrate[i] & 0x0f); 2837 } 2838 seq_puts(m, "\nqueue status:\n"); 2839 DO_LOCK(flags); 2840 if (ISSUE_SC) { 2841 seq_puts(m, "not yet issued commands:\n"); 2842 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) 2843 get_command(m, ptr); 2844 } else 2845 seq_puts(m, "no not yet issued commands\n"); 2846 DO_UNLOCK(flags); 2847 2848 if (CURRENT_SC) { 2849 seq_puts(m, "current command:\n"); 2850 get_command(m, CURRENT_SC); 2851 } else 2852 seq_puts(m, "no current command\n"); 2853 2854 if (DISCONNECTED_SC) { 2855 seq_puts(m, "disconnected commands:\n"); 2856 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr)) 2857 get_command(m, ptr); 2858 } else 2859 seq_puts(m, "no disconnected commands\n"); 2860 2861 get_ports(m, shpnt); 2862 2863 #if defined(AHA152X_STAT) 2864 seq_printf(m, "statistics:\n" 2865 "total commands: %d\n" 2866 "disconnections: %d\n" 2867 "busfree with check condition: %d\n" 2868 "busfree without old command: %d\n" 2869 "busfree without new command: %d\n" 2870 "busfree without done command: %d\n" 2871 "busfree without any action: %d\n" 2872 "state " 2873 "transitions " 2874 "count " 2875 "time\n", 2876 HOSTDATA(shpnt)->total_commands, 2877 HOSTDATA(shpnt)->disconnections, 2878 HOSTDATA(shpnt)->busfree_with_check_condition, 2879 HOSTDATA(shpnt)->busfree_without_old_command, 2880 HOSTDATA(shpnt)->busfree_without_new_command, 2881 HOSTDATA(shpnt)->busfree_without_done_command, 2882 HOSTDATA(shpnt)->busfree_without_any_action); 2883 for(i=0; i<maxstate; i++) { 2884 seq_printf(m, "%-10s %-12d %-12d %-12ld\n", 2885 states[i].name, 2886 HOSTDATA(shpnt)->count_trans[i], 2887 HOSTDATA(shpnt)->count[i], 2888 HOSTDATA(shpnt)->time[i]); 2889 } 2890 #endif 2891 return 0; 2892 } 2893 2894 static int aha152x_adjust_queue(struct scsi_device *device) 2895 { 2896 blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH); 2897 return 0; 2898 } 2899 2900 static struct scsi_host_template aha152x_driver_template = { 2901 .module = THIS_MODULE, 2902 .name = AHA152X_REVID, 2903 .proc_name = "aha152x", 2904 .show_info = aha152x_show_info, 2905 .write_info = aha152x_set_info, 2906 .queuecommand = aha152x_queue, 2907 .eh_abort_handler = aha152x_abort, 2908 .eh_device_reset_handler = aha152x_device_reset, 2909 .eh_bus_reset_handler = aha152x_bus_reset, 2910 .bios_param = aha152x_biosparam, 2911 .can_queue = 1, 2912 .this_id = 7, 2913 .sg_tablesize = SG_ALL, 2914 .dma_boundary = PAGE_SIZE - 1, 2915 .slave_alloc = aha152x_adjust_queue, 2916 }; 2917 2918 #if !defined(AHA152X_PCMCIA) 2919 static int setup_count; 2920 static struct aha152x_setup setup[2]; 2921 2922 /* possible i/o addresses for the AIC-6260; default first */ 2923 static unsigned short ports[] = { 0x340, 0x140 }; 2924 2925 #if !defined(SKIP_BIOSTEST) 2926 /* possible locations for the Adaptec BIOS; defaults first */ 2927 static unsigned int addresses[] = 2928 { 2929 0xdc000, /* default first */ 2930 0xc8000, 2931 0xcc000, 2932 0xd0000, 2933 0xd4000, 2934 0xd8000, 2935 0xe0000, 2936 0xeb800, /* VTech Platinum SMP */ 2937 0xf0000, 2938 }; 2939 2940 /* signatures for various AIC-6[23]60 based controllers. 2941 The point in detecting signatures is to avoid useless and maybe 2942 harmful probes on ports. I'm not sure that all listed boards pass 2943 auto-configuration. For those which fail the BIOS signature is 2944 obsolete, because user intervention to supply the configuration is 2945 needed anyway. May be an information whether or not the BIOS supports 2946 extended translation could be also useful here. */ 2947 static struct signature { 2948 unsigned char *signature; 2949 int sig_offset; 2950 int sig_length; 2951 } signatures[] = 2952 { 2953 { "Adaptec AHA-1520 BIOS", 0x102e, 21 }, 2954 /* Adaptec 152x */ 2955 { "Adaptec AHA-1520B", 0x000b, 17 }, 2956 /* Adaptec 152x rev B */ 2957 { "Adaptec AHA-1520B", 0x0026, 17 }, 2958 /* Iomega Jaz Jet ISA (AIC6370Q) */ 2959 { "Adaptec ASW-B626 BIOS", 0x1029, 21 }, 2960 /* on-board controller */ 2961 { "Adaptec BIOS: ASW-B626", 0x000f, 22 }, 2962 /* on-board controller */ 2963 { "Adaptec ASW-B626 S2", 0x2e6c, 19 }, 2964 /* on-board controller */ 2965 { "Adaptec BIOS:AIC-6360", 0x000c, 21 }, 2966 /* on-board controller */ 2967 { "ScsiPro SP-360 BIOS", 0x2873, 19 }, 2968 /* ScsiPro-Controller */ 2969 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 }, 2970 /* Gigabyte Local-Bus-SCSI */ 2971 { "Adaptec BIOS:AVA-282X", 0x000c, 21 }, 2972 /* Adaptec 282x */ 2973 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 }, 2974 /* IBM Thinkpad Dock II */ 2975 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 }, 2976 /* IBM Thinkpad Dock II SCSI */ 2977 { "DTC3520A Host Adapter BIOS", 0x318a, 26 }, 2978 /* DTC 3520A ISA SCSI */ 2979 }; 2980 #endif /* !SKIP_BIOSTEST */ 2981 2982 /* 2983 * Test, if port_base is valid. 2984 * 2985 */ 2986 static int aha152x_porttest(int io_port) 2987 { 2988 int i; 2989 2990 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ 2991 for (i = 0; i < 16; i++) 2992 SETPORT(io_port + O_STACK, i); 2993 2994 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ 2995 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++) 2996 ; 2997 2998 return (i == 16); 2999 } 3000 3001 static int tc1550_porttest(int io_port) 3002 { 3003 int i; 3004 3005 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ 3006 for (i = 0; i < 16; i++) 3007 SETPORT(io_port + O_STACK, i); 3008 3009 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ 3010 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++) 3011 ; 3012 3013 return (i == 16); 3014 } 3015 3016 3017 static int checksetup(struct aha152x_setup *setup) 3018 { 3019 int i; 3020 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++) 3021 ; 3022 3023 if (i == ARRAY_SIZE(ports)) 3024 return 0; 3025 3026 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) { 3027 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port); 3028 return 0; 3029 } 3030 3031 if( aha152x_porttest(setup->io_port) ) { 3032 setup->tc1550=0; 3033 } else if( tc1550_porttest(setup->io_port) ) { 3034 setup->tc1550=1; 3035 } else { 3036 release_region(setup->io_port, IO_RANGE); 3037 return 0; 3038 } 3039 3040 release_region(setup->io_port, IO_RANGE); 3041 3042 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX)) 3043 return 0; 3044 3045 if ((setup->scsiid < 0) || (setup->scsiid > 7)) 3046 return 0; 3047 3048 if ((setup->reconnect < 0) || (setup->reconnect > 1)) 3049 return 0; 3050 3051 if ((setup->parity < 0) || (setup->parity > 1)) 3052 return 0; 3053 3054 if ((setup->synchronous < 0) || (setup->synchronous > 1)) 3055 return 0; 3056 3057 if ((setup->ext_trans < 0) || (setup->ext_trans > 1)) 3058 return 0; 3059 3060 3061 return 1; 3062 } 3063 3064 3065 static int __init aha152x_init(void) 3066 { 3067 int i, j, ok; 3068 #if defined(AUTOCONF) 3069 aha152x_config conf; 3070 #endif 3071 #ifdef __ISAPNP__ 3072 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL}; 3073 #endif 3074 3075 if ( setup_count ) { 3076 printk(KERN_INFO "aha152x: processing commandline: "); 3077 3078 for (i = 0; i<setup_count; i++) { 3079 if (!checksetup(&setup[i])) { 3080 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf); 3081 printk(KERN_ERR "aha152x: invalid line\n"); 3082 } 3083 } 3084 printk("ok\n"); 3085 } 3086 3087 #if defined(SETUP0) 3088 if (setup_count < ARRAY_SIZE(setup)) { 3089 struct aha152x_setup override = SETUP0; 3090 3091 if (setup_count == 0 || (override.io_port != setup[0].io_port)) { 3092 if (!checksetup(&override)) { 3093 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", 3094 override.io_port, 3095 override.irq, 3096 override.scsiid, 3097 override.reconnect, 3098 override.parity, 3099 override.synchronous, 3100 override.delay, 3101 override.ext_trans); 3102 } else 3103 setup[setup_count++] = override; 3104 } 3105 } 3106 #endif 3107 3108 #if defined(SETUP1) 3109 if (setup_count < ARRAY_SIZE(setup)) { 3110 struct aha152x_setup override = SETUP1; 3111 3112 if (setup_count == 0 || (override.io_port != setup[0].io_port)) { 3113 if (!checksetup(&override)) { 3114 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", 3115 override.io_port, 3116 override.irq, 3117 override.scsiid, 3118 override.reconnect, 3119 override.parity, 3120 override.synchronous, 3121 override.delay, 3122 override.ext_trans); 3123 } else 3124 setup[setup_count++] = override; 3125 } 3126 } 3127 #endif 3128 3129 #if defined(MODULE) 3130 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) { 3131 if(aha152x[0]!=0) { 3132 setup[setup_count].conf = ""; 3133 setup[setup_count].io_port = aha152x[0]; 3134 setup[setup_count].irq = aha152x[1]; 3135 setup[setup_count].scsiid = aha152x[2]; 3136 setup[setup_count].reconnect = aha152x[3]; 3137 setup[setup_count].parity = aha152x[4]; 3138 setup[setup_count].synchronous = aha152x[5]; 3139 setup[setup_count].delay = aha152x[6]; 3140 setup[setup_count].ext_trans = aha152x[7]; 3141 } else if (io[0] != 0 || irq[0] != 0) { 3142 if(io[0]!=0) setup[setup_count].io_port = io[0]; 3143 if(irq[0]!=0) setup[setup_count].irq = irq[0]; 3144 3145 setup[setup_count].scsiid = scsiid[0]; 3146 setup[setup_count].reconnect = reconnect[0]; 3147 setup[setup_count].parity = parity[0]; 3148 setup[setup_count].synchronous = sync[0]; 3149 setup[setup_count].delay = delay[0]; 3150 setup[setup_count].ext_trans = exttrans[0]; 3151 } 3152 3153 if (checksetup(&setup[setup_count])) 3154 setup_count++; 3155 else 3156 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", 3157 setup[setup_count].io_port, 3158 setup[setup_count].irq, 3159 setup[setup_count].scsiid, 3160 setup[setup_count].reconnect, 3161 setup[setup_count].parity, 3162 setup[setup_count].synchronous, 3163 setup[setup_count].delay, 3164 setup[setup_count].ext_trans); 3165 } 3166 3167 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) { 3168 if(aha152x1[0]!=0) { 3169 setup[setup_count].conf = ""; 3170 setup[setup_count].io_port = aha152x1[0]; 3171 setup[setup_count].irq = aha152x1[1]; 3172 setup[setup_count].scsiid = aha152x1[2]; 3173 setup[setup_count].reconnect = aha152x1[3]; 3174 setup[setup_count].parity = aha152x1[4]; 3175 setup[setup_count].synchronous = aha152x1[5]; 3176 setup[setup_count].delay = aha152x1[6]; 3177 setup[setup_count].ext_trans = aha152x1[7]; 3178 } else if (io[1] != 0 || irq[1] != 0) { 3179 if(io[1]!=0) setup[setup_count].io_port = io[1]; 3180 if(irq[1]!=0) setup[setup_count].irq = irq[1]; 3181 3182 setup[setup_count].scsiid = scsiid[1]; 3183 setup[setup_count].reconnect = reconnect[1]; 3184 setup[setup_count].parity = parity[1]; 3185 setup[setup_count].synchronous = sync[1]; 3186 setup[setup_count].delay = delay[1]; 3187 setup[setup_count].ext_trans = exttrans[1]; 3188 } 3189 if (checksetup(&setup[setup_count])) 3190 setup_count++; 3191 else 3192 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", 3193 setup[setup_count].io_port, 3194 setup[setup_count].irq, 3195 setup[setup_count].scsiid, 3196 setup[setup_count].reconnect, 3197 setup[setup_count].parity, 3198 setup[setup_count].synchronous, 3199 setup[setup_count].delay, 3200 setup[setup_count].ext_trans); 3201 } 3202 #endif 3203 3204 #ifdef __ISAPNP__ 3205 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) { 3206 while ( setup_count<ARRAY_SIZE(setup) && 3207 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) { 3208 if (pnp_device_attach(dev) < 0) 3209 continue; 3210 3211 if (pnp_activate_dev(dev) < 0) { 3212 pnp_device_detach(dev); 3213 continue; 3214 } 3215 3216 if (!pnp_port_valid(dev, 0)) { 3217 pnp_device_detach(dev); 3218 continue; 3219 } 3220 3221 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) { 3222 pnp_device_detach(dev); 3223 continue; 3224 } 3225 3226 setup[setup_count].io_port = pnp_port_start(dev, 0); 3227 setup[setup_count].irq = pnp_irq(dev, 0); 3228 setup[setup_count].scsiid = 7; 3229 setup[setup_count].reconnect = 1; 3230 setup[setup_count].parity = 1; 3231 setup[setup_count].synchronous = 1; 3232 setup[setup_count].delay = DELAY_DEFAULT; 3233 setup[setup_count].ext_trans = 0; 3234 #if defined(__ISAPNP__) 3235 pnpdev[setup_count] = dev; 3236 #endif 3237 printk (KERN_INFO 3238 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n", 3239 setup[setup_count].io_port, setup[setup_count].irq); 3240 setup_count++; 3241 } 3242 } 3243 #endif 3244 3245 #if defined(AUTOCONF) 3246 if (setup_count<ARRAY_SIZE(setup)) { 3247 #if !defined(SKIP_BIOSTEST) 3248 ok = 0; 3249 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) { 3250 void __iomem *p = ioremap(addresses[i], 0x4000); 3251 if (!p) 3252 continue; 3253 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++) 3254 ok = check_signature(p + signatures[j].sig_offset, 3255 signatures[j].signature, signatures[j].sig_length); 3256 iounmap(p); 3257 } 3258 if (!ok && setup_count == 0) 3259 return -ENODEV; 3260 3261 printk(KERN_INFO "aha152x: BIOS test: passed, "); 3262 #else 3263 printk(KERN_INFO "aha152x: "); 3264 #endif /* !SKIP_BIOSTEST */ 3265 3266 ok = 0; 3267 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) { 3268 if ((setup_count == 1) && (setup[0].io_port == ports[i])) 3269 continue; 3270 3271 if (!request_region(ports[i], IO_RANGE, "aha152x")) { 3272 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]); 3273 continue; 3274 } 3275 3276 if (aha152x_porttest(ports[i])) { 3277 setup[setup_count].tc1550 = 0; 3278 3279 conf.cf_port = 3280 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB); 3281 } else if (tc1550_porttest(ports[i])) { 3282 setup[setup_count].tc1550 = 1; 3283 3284 conf.cf_port = 3285 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB); 3286 } else { 3287 release_region(ports[i], IO_RANGE); 3288 continue; 3289 } 3290 3291 release_region(ports[i], IO_RANGE); 3292 3293 ok++; 3294 setup[setup_count].io_port = ports[i]; 3295 setup[setup_count].irq = IRQ_MIN + conf.cf_irq; 3296 setup[setup_count].scsiid = conf.cf_id; 3297 setup[setup_count].reconnect = conf.cf_tardisc; 3298 setup[setup_count].parity = !conf.cf_parity; 3299 setup[setup_count].synchronous = conf.cf_syncneg; 3300 setup[setup_count].delay = DELAY_DEFAULT; 3301 setup[setup_count].ext_trans = 0; 3302 setup_count++; 3303 3304 } 3305 3306 if (ok) 3307 printk("auto configuration: ok, "); 3308 } 3309 #endif 3310 3311 printk("%d controller(s) configured\n", setup_count); 3312 3313 for (i=0; i<setup_count; i++) { 3314 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) { 3315 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]); 3316 3317 if( !shpnt ) { 3318 release_region(setup[i].io_port, IO_RANGE); 3319 #if defined(__ISAPNP__) 3320 } else if( pnpdev[i] ) { 3321 HOSTDATA(shpnt)->pnpdev=pnpdev[i]; 3322 pnpdev[i]=NULL; 3323 #endif 3324 } 3325 } else { 3326 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port); 3327 } 3328 3329 #if defined(__ISAPNP__) 3330 if( pnpdev[i] ) 3331 pnp_device_detach(pnpdev[i]); 3332 #endif 3333 } 3334 3335 return 0; 3336 } 3337 3338 static void __exit aha152x_exit(void) 3339 { 3340 struct aha152x_hostdata *hd, *tmp; 3341 3342 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) { 3343 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); 3344 3345 aha152x_release(shost); 3346 } 3347 } 3348 3349 module_init(aha152x_init); 3350 module_exit(aha152x_exit); 3351 3352 #if !defined(MODULE) 3353 static int __init aha152x_setup(char *str) 3354 { 3355 int ints[10]; 3356 3357 get_options(str, ARRAY_SIZE(ints), ints); 3358 3359 if(setup_count>=ARRAY_SIZE(setup)) { 3360 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n"); 3361 return 1; 3362 } 3363 3364 setup[setup_count].conf = str; 3365 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340; 3366 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11; 3367 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7; 3368 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1; 3369 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1; 3370 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1; 3371 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT; 3372 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0; 3373 if (ints[0] > 8) { /*}*/ 3374 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>" 3375 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n"); 3376 } else { 3377 setup_count++; 3378 return 0; 3379 } 3380 3381 return 1; 3382 } 3383 __setup("aha152x=", aha152x_setup); 3384 #endif 3385 3386 #endif /* !AHA152X_PCMCIA */ 3387