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, int phase) 909 { 910 struct Scsi_Host *shpnt = SCpnt->device->host; 911 unsigned long flags; 912 913 SCpnt->SCp.phase = not_issued | phase; 914 SCpnt->SCp.Status = 0x1; /* Ilegal status by SCSI standard */ 915 SCpnt->SCp.Message = 0; 916 SCpnt->SCp.have_data_in = 0; 917 SCpnt->SCp.sent_command = 0; 918 919 if(SCpnt->SCp.phase & (resetting|check_condition)) { 920 if (!SCpnt->host_scribble || SCSEM(SCpnt) || SCNEXT(SCpnt)) { 921 scmd_printk(KERN_ERR, SCpnt, "cannot reuse command\n"); 922 return FAILED; 923 } 924 } else { 925 SCpnt->host_scribble = kmalloc(sizeof(struct aha152x_scdata), GFP_ATOMIC); 926 if(!SCpnt->host_scribble) { 927 scmd_printk(KERN_ERR, SCpnt, "allocation failed\n"); 928 return FAILED; 929 } 930 } 931 932 SCNEXT(SCpnt) = NULL; 933 SCSEM(SCpnt) = complete; 934 935 /* setup scratch area 936 SCp.ptr : buffer pointer 937 SCp.this_residual : buffer length 938 SCp.buffer : next buffer 939 SCp.phase : current state of the command */ 940 941 if ((phase & resetting) || !scsi_sglist(SCpnt)) { 942 SCpnt->SCp.ptr = NULL; 943 SCpnt->SCp.this_residual = 0; 944 scsi_set_resid(SCpnt, 0); 945 SCpnt->SCp.buffer = NULL; 946 } else { 947 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); 948 SCpnt->SCp.buffer = scsi_sglist(SCpnt); 949 SCpnt->SCp.ptr = SG_ADDRESS(SCpnt->SCp.buffer); 950 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length; 951 } 952 953 DO_LOCK(flags); 954 955 #if defined(AHA152X_STAT) 956 HOSTDATA(shpnt)->total_commands++; 957 #endif 958 959 /* Turn led on, when this is the first command. */ 960 HOSTDATA(shpnt)->commands++; 961 if (HOSTDATA(shpnt)->commands==1) 962 SETPORT(PORTA, 1); 963 964 append_SC(&ISSUE_SC, SCpnt); 965 966 if(!HOSTDATA(shpnt)->in_intr) 967 setup_expected_interrupts(shpnt); 968 969 DO_UNLOCK(flags); 970 971 return 0; 972 } 973 974 /* 975 * queue a command 976 * 977 */ 978 static int aha152x_queue_lck(struct scsi_cmnd *SCpnt) 979 { 980 return aha152x_internal_queue(SCpnt, NULL, 0); 981 } 982 983 static DEF_SCSI_QCMD(aha152x_queue) 984 985 986 /* 987 * 988 */ 989 static void reset_done(struct scsi_cmnd *SCpnt) 990 { 991 if(SCSEM(SCpnt)) { 992 complete(SCSEM(SCpnt)); 993 } else { 994 printk(KERN_ERR "aha152x: reset_done w/o completion\n"); 995 } 996 } 997 998 static void aha152x_scsi_done(struct scsi_cmnd *SCpnt) 999 { 1000 if (SCpnt->SCp.phase & resetting) 1001 reset_done(SCpnt); 1002 else 1003 scsi_done(SCpnt); 1004 } 1005 1006 /* 1007 * Abort a command 1008 * 1009 */ 1010 static int aha152x_abort(struct scsi_cmnd *SCpnt) 1011 { 1012 struct Scsi_Host *shpnt = SCpnt->device->host; 1013 struct scsi_cmnd *ptr; 1014 unsigned long flags; 1015 1016 DO_LOCK(flags); 1017 1018 ptr=remove_SC(&ISSUE_SC, SCpnt); 1019 1020 if(ptr) { 1021 HOSTDATA(shpnt)->commands--; 1022 if (!HOSTDATA(shpnt)->commands) 1023 SETPORT(PORTA, 0); 1024 DO_UNLOCK(flags); 1025 1026 kfree(SCpnt->host_scribble); 1027 SCpnt->host_scribble=NULL; 1028 1029 return SUCCESS; 1030 } 1031 1032 DO_UNLOCK(flags); 1033 1034 /* 1035 * FIXME: 1036 * for current command: queue ABORT for message out and raise ATN 1037 * for disconnected command: pseudo SC with ABORT message or ABORT on reselection? 1038 * 1039 */ 1040 1041 scmd_printk(KERN_ERR, SCpnt, 1042 "cannot abort running or disconnected command\n"); 1043 1044 return FAILED; 1045 } 1046 1047 /* 1048 * Reset a device 1049 * 1050 */ 1051 static int aha152x_device_reset(struct scsi_cmnd * SCpnt) 1052 { 1053 struct Scsi_Host *shpnt = SCpnt->device->host; 1054 DECLARE_COMPLETION(done); 1055 int ret, issued, disconnected; 1056 unsigned char old_cmd_len = SCpnt->cmd_len; 1057 unsigned long flags; 1058 unsigned long timeleft; 1059 1060 if(CURRENT_SC==SCpnt) { 1061 scmd_printk(KERN_ERR, SCpnt, "cannot reset current device\n"); 1062 return FAILED; 1063 } 1064 1065 DO_LOCK(flags); 1066 issued = remove_SC(&ISSUE_SC, SCpnt) == NULL; 1067 disconnected = issued && remove_SC(&DISCONNECTED_SC, SCpnt); 1068 DO_UNLOCK(flags); 1069 1070 SCpnt->cmd_len = 0; 1071 1072 aha152x_internal_queue(SCpnt, &done, resetting); 1073 1074 timeleft = wait_for_completion_timeout(&done, 100*HZ); 1075 if (!timeleft) { 1076 /* remove command from issue queue */ 1077 DO_LOCK(flags); 1078 remove_SC(&ISSUE_SC, SCpnt); 1079 DO_UNLOCK(flags); 1080 } 1081 1082 SCpnt->cmd_len = old_cmd_len; 1083 1084 DO_LOCK(flags); 1085 1086 if(SCpnt->SCp.phase & resetted) { 1087 HOSTDATA(shpnt)->commands--; 1088 if (!HOSTDATA(shpnt)->commands) 1089 SETPORT(PORTA, 0); 1090 kfree(SCpnt->host_scribble); 1091 SCpnt->host_scribble=NULL; 1092 1093 ret = SUCCESS; 1094 } else { 1095 /* requeue */ 1096 if(!issued) { 1097 append_SC(&ISSUE_SC, SCpnt); 1098 } else if(disconnected) { 1099 append_SC(&DISCONNECTED_SC, SCpnt); 1100 } 1101 1102 ret = FAILED; 1103 } 1104 1105 DO_UNLOCK(flags); 1106 return ret; 1107 } 1108 1109 static void free_hard_reset_SCs(struct Scsi_Host *shpnt, 1110 struct scsi_cmnd **SCs) 1111 { 1112 struct scsi_cmnd *ptr; 1113 1114 ptr=*SCs; 1115 while(ptr) { 1116 struct scsi_cmnd *next; 1117 1118 if(SCDATA(ptr)) { 1119 next = SCNEXT(ptr); 1120 } else { 1121 scmd_printk(KERN_DEBUG, ptr, 1122 "queue corrupted at %p\n", ptr); 1123 next = NULL; 1124 } 1125 1126 if (!ptr->device->soft_reset) { 1127 remove_SC(SCs, ptr); 1128 HOSTDATA(shpnt)->commands--; 1129 kfree(ptr->host_scribble); 1130 ptr->host_scribble=NULL; 1131 } 1132 1133 ptr = next; 1134 } 1135 } 1136 1137 /* 1138 * Reset the bus 1139 * 1140 * AIC-6260 has a hard reset (MRST signal), but apparently 1141 * one cannot trigger it via software. So live with 1142 * a soft reset; no-one seemed to have cared. 1143 */ 1144 static int aha152x_bus_reset_host(struct Scsi_Host *shpnt) 1145 { 1146 unsigned long flags; 1147 1148 DO_LOCK(flags); 1149 1150 free_hard_reset_SCs(shpnt, &ISSUE_SC); 1151 free_hard_reset_SCs(shpnt, &DISCONNECTED_SC); 1152 1153 SETPORT(SCSISEQ, SCSIRSTO); 1154 mdelay(256); 1155 SETPORT(SCSISEQ, 0); 1156 mdelay(DELAY); 1157 1158 setup_expected_interrupts(shpnt); 1159 if(HOSTDATA(shpnt)->commands==0) 1160 SETPORT(PORTA, 0); 1161 1162 DO_UNLOCK(flags); 1163 1164 return SUCCESS; 1165 } 1166 1167 /* 1168 * Reset the bus 1169 * 1170 */ 1171 static int aha152x_bus_reset(struct scsi_cmnd *SCpnt) 1172 { 1173 return aha152x_bus_reset_host(SCpnt->device->host); 1174 } 1175 1176 /* 1177 * Restore default values to the AIC-6260 registers and reset the fifos 1178 * 1179 */ 1180 static void reset_ports(struct Scsi_Host *shpnt) 1181 { 1182 unsigned long flags; 1183 1184 /* disable interrupts */ 1185 SETPORT(DMACNTRL0, RSTFIFO); 1186 1187 SETPORT(SCSISEQ, 0); 1188 1189 SETPORT(SXFRCTL1, 0); 1190 SETPORT(SCSISIG, 0); 1191 SETRATE(0); 1192 1193 /* clear all interrupt conditions */ 1194 SETPORT(SSTAT0, 0x7f); 1195 SETPORT(SSTAT1, 0xef); 1196 1197 SETPORT(SSTAT4, SYNCERR | FWERR | FRERR); 1198 1199 SETPORT(DMACNTRL0, 0); 1200 SETPORT(DMACNTRL1, 0); 1201 1202 SETPORT(BRSTCNTRL, 0xf1); 1203 1204 /* clear SCSI fifos and transfer count */ 1205 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 1206 SETPORT(SXFRCTL0, CH1); 1207 1208 DO_LOCK(flags); 1209 setup_expected_interrupts(shpnt); 1210 DO_UNLOCK(flags); 1211 } 1212 1213 /* 1214 * Reset the host (bus and controller) 1215 * 1216 */ 1217 int aha152x_host_reset_host(struct Scsi_Host *shpnt) 1218 { 1219 aha152x_bus_reset_host(shpnt); 1220 reset_ports(shpnt); 1221 1222 return SUCCESS; 1223 } 1224 1225 /* 1226 * Return the "logical geometry" 1227 * 1228 */ 1229 static int aha152x_biosparam(struct scsi_device *sdev, struct block_device *bdev, 1230 sector_t capacity, int *info_array) 1231 { 1232 struct Scsi_Host *shpnt = sdev->host; 1233 1234 /* try default translation */ 1235 info_array[0] = 64; 1236 info_array[1] = 32; 1237 info_array[2] = (unsigned long)capacity / (64 * 32); 1238 1239 /* for disks >1GB do some guessing */ 1240 if (info_array[2] >= 1024) { 1241 int info[3]; 1242 1243 /* try to figure out the geometry from the partition table */ 1244 if (scsicam_bios_param(bdev, capacity, info) < 0 || 1245 !((info[0] == 64 && info[1] == 32) || (info[0] == 255 && info[1] == 63))) { 1246 if (EXT_TRANS) { 1247 printk(KERN_NOTICE 1248 "aha152x: unable to verify geometry for disk with >1GB.\n" 1249 " using extended translation.\n"); 1250 info_array[0] = 255; 1251 info_array[1] = 63; 1252 info_array[2] = (unsigned long)capacity / (255 * 63); 1253 } else { 1254 printk(KERN_NOTICE 1255 "aha152x: unable to verify geometry for disk with >1GB.\n" 1256 " Using default translation. Please verify yourself.\n" 1257 " Perhaps you need to enable extended translation in the driver.\n" 1258 " See Documentation/scsi/aha152x.rst for details.\n"); 1259 } 1260 } else { 1261 info_array[0] = info[0]; 1262 info_array[1] = info[1]; 1263 info_array[2] = info[2]; 1264 1265 if (info[0] == 255 && !EXT_TRANS) { 1266 printk(KERN_NOTICE 1267 "aha152x: current partition table is using extended translation.\n" 1268 " using it also, although it's not explicitly enabled.\n"); 1269 } 1270 } 1271 } 1272 1273 return 0; 1274 } 1275 1276 /* 1277 * Internal done function 1278 * 1279 */ 1280 static void done(struct Scsi_Host *shpnt, unsigned char status_byte, 1281 unsigned char host_byte) 1282 { 1283 if (CURRENT_SC) { 1284 if(DONE_SC) 1285 scmd_printk(KERN_ERR, CURRENT_SC, 1286 "there's already a completed command %p " 1287 "- will cause abort\n", DONE_SC); 1288 1289 DONE_SC = CURRENT_SC; 1290 CURRENT_SC = NULL; 1291 set_status_byte(DONE_SC, status_byte); 1292 set_host_byte(DONE_SC, host_byte); 1293 } else 1294 printk(KERN_ERR "aha152x: done() called outside of command\n"); 1295 } 1296 1297 static struct work_struct aha152x_tq; 1298 1299 /* 1300 * Run service completions on the card with interrupts enabled. 1301 * 1302 */ 1303 static void run(struct work_struct *work) 1304 { 1305 struct aha152x_hostdata *hd; 1306 1307 list_for_each_entry(hd, &aha152x_host_list, host_list) { 1308 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); 1309 1310 is_complete(shost); 1311 } 1312 } 1313 1314 /* 1315 * Interrupt handler 1316 * 1317 */ 1318 static irqreturn_t intr(int irqno, void *dev_id) 1319 { 1320 struct Scsi_Host *shpnt = dev_id; 1321 unsigned long flags; 1322 unsigned char rev, dmacntrl0; 1323 1324 /* 1325 * Read a couple of registers that are known to not be all 1's. If 1326 * we read all 1's (-1), that means that either: 1327 * 1328 * a. The host adapter chip has gone bad, and we cannot control it, 1329 * OR 1330 * b. The host adapter is a PCMCIA card that has been ejected 1331 * 1332 * In either case, we cannot do anything with the host adapter at 1333 * this point in time. So just ignore the interrupt and return. 1334 * In the latter case, the interrupt might actually be meant for 1335 * someone else sharing this IRQ, and that driver will handle it. 1336 */ 1337 rev = GETPORT(REV); 1338 dmacntrl0 = GETPORT(DMACNTRL0); 1339 if ((rev == 0xFF) && (dmacntrl0 == 0xFF)) 1340 return IRQ_NONE; 1341 1342 if( TESTLO(DMASTAT, INTSTAT) ) 1343 return IRQ_NONE; 1344 1345 /* no more interrupts from the controller, while we're busy. 1346 INTEN is restored by the BH handler */ 1347 CLRBITS(DMACNTRL0, INTEN); 1348 1349 DO_LOCK(flags); 1350 if( HOSTDATA(shpnt)->service==0 ) { 1351 HOSTDATA(shpnt)->service=1; 1352 1353 /* Poke the BH handler */ 1354 INIT_WORK(&aha152x_tq, run); 1355 schedule_work(&aha152x_tq); 1356 } 1357 DO_UNLOCK(flags); 1358 1359 return IRQ_HANDLED; 1360 } 1361 1362 /* 1363 * busfree phase 1364 * - handle completition/disconnection/error of current command 1365 * - start selection for next command (if any) 1366 */ 1367 static void busfree_run(struct Scsi_Host *shpnt) 1368 { 1369 unsigned long flags; 1370 #if defined(AHA152X_STAT) 1371 int action=0; 1372 #endif 1373 1374 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 1375 SETPORT(SXFRCTL0, CH1); 1376 1377 SETPORT(SSTAT1, CLRBUSFREE); 1378 1379 if(CURRENT_SC) { 1380 #if defined(AHA152X_STAT) 1381 action++; 1382 #endif 1383 CURRENT_SC->SCp.phase &= ~syncneg; 1384 1385 if(CURRENT_SC->SCp.phase & completed) { 1386 /* target sent COMMAND COMPLETE */ 1387 done(shpnt, CURRENT_SC->SCp.Status, DID_OK); 1388 1389 } else if(CURRENT_SC->SCp.phase & aborted) { 1390 done(shpnt, CURRENT_SC->SCp.Status, DID_ABORT); 1391 1392 } else if(CURRENT_SC->SCp.phase & resetted) { 1393 done(shpnt, CURRENT_SC->SCp.Status, DID_RESET); 1394 1395 } else if(CURRENT_SC->SCp.phase & disconnected) { 1396 /* target sent DISCONNECT */ 1397 #if defined(AHA152X_STAT) 1398 HOSTDATA(shpnt)->disconnections++; 1399 #endif 1400 append_SC(&DISCONNECTED_SC, CURRENT_SC); 1401 CURRENT_SC->SCp.phase |= 1 << 16; 1402 CURRENT_SC = NULL; 1403 1404 } else { 1405 done(shpnt, SAM_STAT_GOOD, DID_ERROR); 1406 } 1407 #if defined(AHA152X_STAT) 1408 } else { 1409 HOSTDATA(shpnt)->busfree_without_old_command++; 1410 #endif 1411 } 1412 1413 DO_LOCK(flags); 1414 1415 if(DONE_SC) { 1416 #if defined(AHA152X_STAT) 1417 action++; 1418 #endif 1419 1420 if(DONE_SC->SCp.phase & check_condition) { 1421 struct scsi_cmnd *cmd = HOSTDATA(shpnt)->done_SC; 1422 struct aha152x_scdata *sc = SCDATA(cmd); 1423 1424 scsi_eh_restore_cmnd(cmd, &sc->ses); 1425 1426 cmd->SCp.Status = SAM_STAT_CHECK_CONDITION; 1427 1428 HOSTDATA(shpnt)->commands--; 1429 if (!HOSTDATA(shpnt)->commands) 1430 SETPORT(PORTA, 0); /* turn led off */ 1431 } else if(DONE_SC->SCp.Status==SAM_STAT_CHECK_CONDITION) { 1432 #if defined(AHA152X_STAT) 1433 HOSTDATA(shpnt)->busfree_with_check_condition++; 1434 #endif 1435 1436 if(!(DONE_SC->SCp.phase & not_issued)) { 1437 struct aha152x_scdata *sc; 1438 struct scsi_cmnd *ptr = DONE_SC; 1439 DONE_SC=NULL; 1440 1441 sc = SCDATA(ptr); 1442 /* It was allocated in aha152x_internal_queue? */ 1443 BUG_ON(!sc); 1444 scsi_eh_prep_cmnd(ptr, &sc->ses, NULL, 0, ~0); 1445 1446 DO_UNLOCK(flags); 1447 aha152x_internal_queue(ptr, NULL, check_condition); 1448 DO_LOCK(flags); 1449 } 1450 } 1451 1452 if (DONE_SC) { 1453 struct scsi_cmnd *ptr = DONE_SC; 1454 DONE_SC=NULL; 1455 1456 /* turn led off, when no commands are in the driver */ 1457 HOSTDATA(shpnt)->commands--; 1458 if (!HOSTDATA(shpnt)->commands) 1459 SETPORT(PORTA, 0); /* turn led off */ 1460 1461 if (!(ptr->SCp.phase & resetting)) { 1462 kfree(ptr->host_scribble); 1463 ptr->host_scribble=NULL; 1464 } 1465 1466 DO_UNLOCK(flags); 1467 aha152x_scsi_done(ptr); 1468 DO_LOCK(flags); 1469 } 1470 1471 DONE_SC=NULL; 1472 #if defined(AHA152X_STAT) 1473 } else { 1474 HOSTDATA(shpnt)->busfree_without_done_command++; 1475 #endif 1476 } 1477 1478 if(ISSUE_SC) 1479 CURRENT_SC = remove_first_SC(&ISSUE_SC); 1480 1481 DO_UNLOCK(flags); 1482 1483 if(CURRENT_SC) { 1484 #if defined(AHA152X_STAT) 1485 action++; 1486 #endif 1487 CURRENT_SC->SCp.phase |= selecting; 1488 1489 /* clear selection timeout */ 1490 SETPORT(SSTAT1, SELTO); 1491 1492 SETPORT(SCSIID, (shpnt->this_id << OID_) | CURRENT_SC->device->id); 1493 SETPORT(SXFRCTL1, (PARITY ? ENSPCHK : 0 ) | ENSTIMER); 1494 SETPORT(SCSISEQ, ENSELO | ENAUTOATNO | (DISCONNECTED_SC ? ENRESELI : 0)); 1495 } else { 1496 #if defined(AHA152X_STAT) 1497 HOSTDATA(shpnt)->busfree_without_new_command++; 1498 #endif 1499 SETPORT(SCSISEQ, DISCONNECTED_SC ? ENRESELI : 0); 1500 } 1501 1502 #if defined(AHA152X_STAT) 1503 if(!action) 1504 HOSTDATA(shpnt)->busfree_without_any_action++; 1505 #endif 1506 } 1507 1508 /* 1509 * Selection done (OUT) 1510 * - queue IDENTIFY message and SDTR to selected target for message out 1511 * (ATN asserted automagically via ENAUTOATNO in busfree()) 1512 */ 1513 static void seldo_run(struct Scsi_Host *shpnt) 1514 { 1515 SETPORT(SCSISIG, 0); 1516 SETPORT(SSTAT1, CLRBUSFREE); 1517 SETPORT(SSTAT1, CLRPHASECHG); 1518 1519 CURRENT_SC->SCp.phase &= ~(selecting|not_issued); 1520 1521 SETPORT(SCSISEQ, 0); 1522 1523 if (TESTLO(SSTAT0, SELDO)) { 1524 scmd_printk(KERN_ERR, CURRENT_SC, 1525 "aha152x: passing bus free condition\n"); 1526 done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT); 1527 return; 1528 } 1529 1530 SETPORT(SSTAT0, CLRSELDO); 1531 1532 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); 1533 1534 if (CURRENT_SC->SCp.phase & aborting) { 1535 ADDMSGO(ABORT); 1536 } else if (CURRENT_SC->SCp.phase & resetting) { 1537 ADDMSGO(BUS_DEVICE_RESET); 1538 } else if (SYNCNEG==0 && SYNCHRONOUS) { 1539 CURRENT_SC->SCp.phase |= syncneg; 1540 MSGOLEN += spi_populate_sync_msg(&MSGO(MSGOLEN), 50, 8); 1541 SYNCNEG=1; /* negotiation in progress */ 1542 } 1543 1544 SETRATE(SYNCRATE); 1545 } 1546 1547 /* 1548 * Selection timeout 1549 * - return command to mid-level with failure cause 1550 * 1551 */ 1552 static void selto_run(struct Scsi_Host *shpnt) 1553 { 1554 SETPORT(SCSISEQ, 0); 1555 SETPORT(SSTAT1, CLRSELTIMO); 1556 1557 if (!CURRENT_SC) 1558 return; 1559 1560 CURRENT_SC->SCp.phase &= ~selecting; 1561 1562 if (CURRENT_SC->SCp.phase & aborted) 1563 done(shpnt, SAM_STAT_GOOD, DID_ABORT); 1564 else if (TESTLO(SSTAT0, SELINGO)) 1565 done(shpnt, SAM_STAT_GOOD, DID_BUS_BUSY); 1566 else 1567 /* ARBITRATION won, but SELECTION failed */ 1568 done(shpnt, SAM_STAT_GOOD, DID_NO_CONNECT); 1569 } 1570 1571 /* 1572 * Selection in done 1573 * - put current command back to issue queue 1574 * (reconnection of a disconnected nexus instead 1575 * of successful selection out) 1576 * 1577 */ 1578 static void seldi_run(struct Scsi_Host *shpnt) 1579 { 1580 int selid; 1581 int target; 1582 unsigned long flags; 1583 1584 SETPORT(SCSISIG, 0); 1585 SETPORT(SSTAT0, CLRSELDI); 1586 SETPORT(SSTAT1, CLRBUSFREE); 1587 SETPORT(SSTAT1, CLRPHASECHG); 1588 1589 if(CURRENT_SC) { 1590 if(!(CURRENT_SC->SCp.phase & not_issued)) 1591 scmd_printk(KERN_ERR, CURRENT_SC, 1592 "command should not have been issued yet\n"); 1593 1594 DO_LOCK(flags); 1595 append_SC(&ISSUE_SC, CURRENT_SC); 1596 DO_UNLOCK(flags); 1597 1598 CURRENT_SC = NULL; 1599 } 1600 1601 if (!DISCONNECTED_SC) 1602 return; 1603 1604 RECONN_TARGET=-1; 1605 1606 selid = GETPORT(SELID) & ~(1 << shpnt->this_id); 1607 1608 if (selid==0) { 1609 shost_printk(KERN_INFO, shpnt, 1610 "target id unknown (%02x)\n", selid); 1611 return; 1612 } 1613 1614 for(target=7; !(selid & (1 << target)); target--) 1615 ; 1616 1617 if(selid & ~(1 << target)) { 1618 shost_printk(KERN_INFO, shpnt, 1619 "multiple targets reconnected (%02x)\n", selid); 1620 } 1621 1622 1623 SETPORT(SCSIID, (shpnt->this_id << OID_) | target); 1624 SETPORT(SCSISEQ, 0); 1625 1626 SETRATE(HOSTDATA(shpnt)->syncrate[target]); 1627 1628 RECONN_TARGET=target; 1629 } 1630 1631 /* 1632 * message in phase 1633 * - handle initial message after reconnection to identify 1634 * reconnecting nexus 1635 * - queue command on DISCONNECTED_SC on DISCONNECT message 1636 * - set completed flag on COMMAND COMPLETE 1637 * (other completition code moved to busfree_run) 1638 * - handle response to SDTR 1639 * - clear synchronous transfer agreements on BUS RESET 1640 * 1641 * FIXME: what about SAVE POINTERS, RESTORE POINTERS? 1642 * 1643 */ 1644 static void msgi_run(struct Scsi_Host *shpnt) 1645 { 1646 for(;;) { 1647 int sstat1 = GETPORT(SSTAT1); 1648 1649 if(sstat1 & (PHASECHG|PHASEMIS|BUSFREE) || !(sstat1 & REQINIT)) 1650 return; 1651 1652 if (TESTLO(SSTAT0, SPIORDY)) 1653 return; 1654 1655 ADDMSGI(GETPORT(SCSIDAT)); 1656 1657 if(!CURRENT_SC) { 1658 if(LASTSTATE!=seldi) { 1659 shost_printk(KERN_ERR, shpnt, 1660 "message in w/o current command" 1661 " not after reselection\n"); 1662 } 1663 1664 /* 1665 * Handle reselection 1666 */ 1667 if(!(MSGI(0) & IDENTIFY_BASE)) { 1668 shost_printk(KERN_ERR, shpnt, 1669 "target didn't identify after reselection\n"); 1670 continue; 1671 } 1672 1673 CURRENT_SC = remove_lun_SC(&DISCONNECTED_SC, RECONN_TARGET, MSGI(0) & 0x3f); 1674 1675 if (!CURRENT_SC) { 1676 show_queues(shpnt); 1677 shost_printk(KERN_ERR, shpnt, 1678 "no disconnected command" 1679 " for target %d/%d\n", 1680 RECONN_TARGET, MSGI(0) & 0x3f); 1681 continue; 1682 } 1683 1684 CURRENT_SC->SCp.Message = MSGI(0); 1685 CURRENT_SC->SCp.phase &= ~disconnected; 1686 1687 MSGILEN=0; 1688 1689 /* next message if any */ 1690 continue; 1691 } 1692 1693 CURRENT_SC->SCp.Message = MSGI(0); 1694 1695 switch (MSGI(0)) { 1696 case DISCONNECT: 1697 if (!RECONNECT) 1698 scmd_printk(KERN_WARNING, CURRENT_SC, 1699 "target was not allowed to disconnect\n"); 1700 1701 CURRENT_SC->SCp.phase |= disconnected; 1702 break; 1703 1704 case COMMAND_COMPLETE: 1705 CURRENT_SC->SCp.phase |= completed; 1706 break; 1707 1708 case MESSAGE_REJECT: 1709 if (SYNCNEG==1) { 1710 scmd_printk(KERN_INFO, CURRENT_SC, 1711 "Synchronous Data Transfer Request" 1712 " was rejected\n"); 1713 SYNCNEG=2; /* negotiation completed */ 1714 } else 1715 scmd_printk(KERN_INFO, CURRENT_SC, 1716 "inbound message (MESSAGE REJECT)\n"); 1717 break; 1718 1719 case SAVE_POINTERS: 1720 break; 1721 1722 case RESTORE_POINTERS: 1723 break; 1724 1725 case EXTENDED_MESSAGE: 1726 if(MSGILEN<2 || MSGILEN<MSGI(1)+2) { 1727 /* not yet completed */ 1728 continue; 1729 } 1730 1731 switch (MSGI(2)) { 1732 case EXTENDED_SDTR: 1733 { 1734 long ticks; 1735 1736 if (MSGI(1) != 3) { 1737 scmd_printk(KERN_ERR, CURRENT_SC, 1738 "SDTR message length!=3\n"); 1739 break; 1740 } 1741 1742 if (!HOSTDATA(shpnt)->synchronous) 1743 break; 1744 1745 printk(INFO_LEAD, CMDINFO(CURRENT_SC)); 1746 spi_print_msg(&MSGI(0)); 1747 printk("\n"); 1748 1749 ticks = (MSGI(3) * 4 + 49) / 50; 1750 1751 if (syncneg) { 1752 /* negotiation in progress */ 1753 if (ticks > 9 || MSGI(4) < 1 || MSGI(4) > 8) { 1754 ADDMSGO(MESSAGE_REJECT); 1755 scmd_printk(KERN_INFO, 1756 CURRENT_SC, 1757 "received Synchronous Data Transfer Request invalid - rejected\n"); 1758 break; 1759 } 1760 1761 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); 1762 } else if (ticks <= 9 && MSGI(4) >= 1) { 1763 ADDMSGO(EXTENDED_MESSAGE); 1764 ADDMSGO(3); 1765 ADDMSGO(EXTENDED_SDTR); 1766 if (ticks < 4) { 1767 ticks = 4; 1768 ADDMSGO(50); 1769 } else 1770 ADDMSGO(MSGI(3)); 1771 1772 if (MSGI(4) > 8) 1773 MSGI(4) = 8; 1774 1775 ADDMSGO(MSGI(4)); 1776 1777 SYNCRATE |= ((ticks - 2) << 4) + MSGI(4); 1778 } else { 1779 /* requested SDTR is too slow, do it asynchronously */ 1780 scmd_printk(KERN_INFO, 1781 CURRENT_SC, 1782 "Synchronous Data Transfer Request too slow - Rejecting\n"); 1783 ADDMSGO(MESSAGE_REJECT); 1784 } 1785 1786 /* negotiation completed */ 1787 SYNCNEG=2; 1788 SETRATE(SYNCRATE); 1789 } 1790 break; 1791 1792 case BUS_DEVICE_RESET: 1793 { 1794 int i; 1795 1796 for(i=0; i<8; i++) { 1797 HOSTDATA(shpnt)->syncrate[i]=0; 1798 HOSTDATA(shpnt)->syncneg[i]=0; 1799 } 1800 1801 } 1802 break; 1803 1804 case EXTENDED_MODIFY_DATA_POINTER: 1805 case EXTENDED_EXTENDED_IDENTIFY: 1806 case EXTENDED_WDTR: 1807 default: 1808 ADDMSGO(MESSAGE_REJECT); 1809 break; 1810 } 1811 break; 1812 } 1813 1814 MSGILEN=0; 1815 } 1816 } 1817 1818 static void msgi_end(struct Scsi_Host *shpnt) 1819 { 1820 if(MSGILEN>0) 1821 scmd_printk(KERN_WARNING, CURRENT_SC, 1822 "target left before message completed (%d)\n", 1823 MSGILEN); 1824 1825 if (MSGOLEN > 0 && !(GETPORT(SSTAT1) & BUSFREE)) 1826 SETPORT(SCSISIG, P_MSGI | SIG_ATNO); 1827 } 1828 1829 /* 1830 * message out phase 1831 * 1832 */ 1833 static void msgo_init(struct Scsi_Host *shpnt) 1834 { 1835 if(MSGOLEN==0) { 1836 if((CURRENT_SC->SCp.phase & syncneg) && SYNCNEG==2 && SYNCRATE==0) { 1837 ADDMSGO(IDENTIFY(RECONNECT, CURRENT_SC->device->lun)); 1838 } else { 1839 scmd_printk(KERN_INFO, CURRENT_SC, 1840 "unexpected MESSAGE OUT phase; rejecting\n"); 1841 ADDMSGO(MESSAGE_REJECT); 1842 } 1843 } 1844 1845 } 1846 1847 /* 1848 * message out phase 1849 * 1850 */ 1851 static void msgo_run(struct Scsi_Host *shpnt) 1852 { 1853 while(MSGO_I<MSGOLEN) { 1854 if (TESTLO(SSTAT0, SPIORDY)) 1855 return; 1856 1857 if (MSGO_I==MSGOLEN-1) { 1858 /* Leave MESSAGE OUT after transfer */ 1859 SETPORT(SSTAT1, CLRATNO); 1860 } 1861 1862 1863 if (MSGO(MSGO_I) & IDENTIFY_BASE) 1864 CURRENT_SC->SCp.phase |= identified; 1865 1866 if (MSGO(MSGO_I)==ABORT) 1867 CURRENT_SC->SCp.phase |= aborted; 1868 1869 if (MSGO(MSGO_I)==BUS_DEVICE_RESET) 1870 CURRENT_SC->SCp.phase |= resetted; 1871 1872 SETPORT(SCSIDAT, MSGO(MSGO_I++)); 1873 } 1874 } 1875 1876 static void msgo_end(struct Scsi_Host *shpnt) 1877 { 1878 if(MSGO_I<MSGOLEN) { 1879 scmd_printk(KERN_ERR, CURRENT_SC, 1880 "message sent incompletely (%d/%d)\n", 1881 MSGO_I, MSGOLEN); 1882 if(SYNCNEG==1) { 1883 scmd_printk(KERN_INFO, CURRENT_SC, 1884 "Synchronous Data Transfer Request was rejected\n"); 1885 SYNCNEG=2; 1886 } 1887 } 1888 1889 MSGO_I = 0; 1890 MSGOLEN = 0; 1891 } 1892 1893 /* 1894 * command phase 1895 * 1896 */ 1897 static void cmd_init(struct Scsi_Host *shpnt) 1898 { 1899 if (CURRENT_SC->SCp.sent_command) { 1900 scmd_printk(KERN_ERR, CURRENT_SC, 1901 "command already sent\n"); 1902 done(shpnt, SAM_STAT_GOOD, DID_ERROR); 1903 return; 1904 } 1905 1906 CMD_I=0; 1907 } 1908 1909 /* 1910 * command phase 1911 * 1912 */ 1913 static void cmd_run(struct Scsi_Host *shpnt) 1914 { 1915 while(CMD_I<CURRENT_SC->cmd_len) { 1916 if (TESTLO(SSTAT0, SPIORDY)) 1917 return; 1918 1919 SETPORT(SCSIDAT, CURRENT_SC->cmnd[CMD_I++]); 1920 } 1921 } 1922 1923 static void cmd_end(struct Scsi_Host *shpnt) 1924 { 1925 if(CMD_I<CURRENT_SC->cmd_len) 1926 scmd_printk(KERN_ERR, CURRENT_SC, 1927 "command sent incompletely (%d/%d)\n", 1928 CMD_I, CURRENT_SC->cmd_len); 1929 else 1930 CURRENT_SC->SCp.sent_command++; 1931 } 1932 1933 /* 1934 * status phase 1935 * 1936 */ 1937 static void status_run(struct Scsi_Host *shpnt) 1938 { 1939 if (TESTLO(SSTAT0, SPIORDY)) 1940 return; 1941 1942 CURRENT_SC->SCp.Status = GETPORT(SCSIDAT); 1943 1944 } 1945 1946 /* 1947 * data in phase 1948 * 1949 */ 1950 static void datai_init(struct Scsi_Host *shpnt) 1951 { 1952 SETPORT(DMACNTRL0, RSTFIFO); 1953 SETPORT(DMACNTRL0, RSTFIFO|ENDMA); 1954 1955 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 1956 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); 1957 1958 SETPORT(SIMODE0, 0); 1959 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE); 1960 1961 DATA_LEN=0; 1962 } 1963 1964 static void datai_run(struct Scsi_Host *shpnt) 1965 { 1966 unsigned long the_time; 1967 int fifodata, data_count; 1968 1969 /* 1970 * loop while the phase persists or the fifos are not empty 1971 * 1972 */ 1973 while(TESTLO(DMASTAT, INTSTAT) || TESTLO(DMASTAT, DFIFOEMP) || TESTLO(SSTAT2, SEMPTY)) { 1974 /* FIXME: maybe this should be done by setting up 1975 * STCNT to trigger ENSWRAP interrupt, instead of 1976 * polling for DFIFOFULL 1977 */ 1978 the_time=jiffies + 100*HZ; 1979 while(TESTLO(DMASTAT, DFIFOFULL|INTSTAT) && time_before(jiffies,the_time)) 1980 barrier(); 1981 1982 if(TESTLO(DMASTAT, DFIFOFULL|INTSTAT)) { 1983 scmd_printk(KERN_ERR, CURRENT_SC, "datai timeout\n"); 1984 break; 1985 } 1986 1987 if(TESTHI(DMASTAT, DFIFOFULL)) { 1988 fifodata = 128; 1989 } else { 1990 the_time=jiffies + 100*HZ; 1991 while(TESTLO(SSTAT2, SEMPTY) && time_before(jiffies,the_time)) 1992 barrier(); 1993 1994 if(TESTLO(SSTAT2, SEMPTY)) { 1995 scmd_printk(KERN_ERR, CURRENT_SC, 1996 "datai sempty timeout"); 1997 break; 1998 } 1999 2000 fifodata = GETPORT(FIFOSTAT); 2001 } 2002 2003 if(CURRENT_SC->SCp.this_residual>0) { 2004 while(fifodata>0 && CURRENT_SC->SCp.this_residual>0) { 2005 data_count = fifodata > CURRENT_SC->SCp.this_residual ? 2006 CURRENT_SC->SCp.this_residual : 2007 fifodata; 2008 fifodata -= data_count; 2009 2010 if (data_count & 1) { 2011 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2012 *CURRENT_SC->SCp.ptr++ = GETPORT(DATAPORT); 2013 CURRENT_SC->SCp.this_residual--; 2014 DATA_LEN++; 2015 SETPORT(DMACNTRL0, ENDMA); 2016 } 2017 2018 if (data_count > 1) { 2019 data_count >>= 1; 2020 insw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); 2021 CURRENT_SC->SCp.ptr += 2 * data_count; 2022 CURRENT_SC->SCp.this_residual -= 2 * data_count; 2023 DATA_LEN += 2 * data_count; 2024 } 2025 2026 if (CURRENT_SC->SCp.this_residual == 0 && 2027 !sg_is_last(CURRENT_SC->SCp.buffer)) { 2028 /* advance to next buffer */ 2029 CURRENT_SC->SCp.buffer = sg_next(CURRENT_SC->SCp.buffer); 2030 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer); 2031 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; 2032 } 2033 } 2034 } else if (fifodata > 0) { 2035 scmd_printk(KERN_ERR, CURRENT_SC, 2036 "no buffers left for %d(%d) bytes" 2037 " (data overrun!?)\n", 2038 fifodata, GETPORT(FIFOSTAT)); 2039 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2040 while(fifodata>0) { 2041 GETPORT(DATAPORT); 2042 fifodata--; 2043 DATA_LEN++; 2044 } 2045 SETPORT(DMACNTRL0, ENDMA|_8BIT); 2046 } 2047 } 2048 2049 if(TESTLO(DMASTAT, INTSTAT) || 2050 TESTLO(DMASTAT, DFIFOEMP) || 2051 TESTLO(SSTAT2, SEMPTY) || 2052 GETPORT(FIFOSTAT)>0) { 2053 /* 2054 * something went wrong, if there's something left in the fifos 2055 * or the phase didn't change 2056 */ 2057 scmd_printk(KERN_ERR, CURRENT_SC, 2058 "fifos should be empty and phase should have changed\n"); 2059 } 2060 2061 if(DATA_LEN!=GETSTCNT()) { 2062 scmd_printk(KERN_ERR, CURRENT_SC, 2063 "manual transfer count differs from automatic " 2064 "(count=%d;stcnt=%d;diff=%d;fifostat=%d)", 2065 DATA_LEN, GETSTCNT(), GETSTCNT()-DATA_LEN, 2066 GETPORT(FIFOSTAT)); 2067 mdelay(10000); 2068 } 2069 } 2070 2071 static void datai_end(struct Scsi_Host *shpnt) 2072 { 2073 CMD_INC_RESID(CURRENT_SC, -GETSTCNT()); 2074 2075 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 2076 SETPORT(DMACNTRL0, 0); 2077 } 2078 2079 /* 2080 * data out phase 2081 * 2082 */ 2083 static void datao_init(struct Scsi_Host *shpnt) 2084 { 2085 SETPORT(DMACNTRL0, WRITE_READ | RSTFIFO); 2086 SETPORT(DMACNTRL0, WRITE_READ | ENDMA); 2087 2088 SETPORT(SXFRCTL0, CH1|CLRSTCNT); 2089 SETPORT(SXFRCTL0, CH1|SCSIEN|DMAEN); 2090 2091 SETPORT(SIMODE0, 0); 2092 SETPORT(SIMODE1, ENSCSIPERR | ENSCSIRST | ENPHASEMIS | ENBUSFREE ); 2093 2094 DATA_LEN = scsi_get_resid(CURRENT_SC); 2095 } 2096 2097 static void datao_run(struct Scsi_Host *shpnt) 2098 { 2099 unsigned long the_time; 2100 int data_count; 2101 2102 /* until phase changes or all data sent */ 2103 while(TESTLO(DMASTAT, INTSTAT) && CURRENT_SC->SCp.this_residual>0) { 2104 data_count = 128; 2105 if(data_count > CURRENT_SC->SCp.this_residual) 2106 data_count=CURRENT_SC->SCp.this_residual; 2107 2108 if(TESTLO(DMASTAT, DFIFOEMP)) { 2109 scmd_printk(KERN_ERR, CURRENT_SC, 2110 "datao fifo not empty (%d)", 2111 GETPORT(FIFOSTAT)); 2112 break; 2113 } 2114 2115 if(data_count & 1) { 2116 SETPORT(DMACNTRL0,WRITE_READ|ENDMA|_8BIT); 2117 SETPORT(DATAPORT, *CURRENT_SC->SCp.ptr++); 2118 CURRENT_SC->SCp.this_residual--; 2119 CMD_INC_RESID(CURRENT_SC, -1); 2120 SETPORT(DMACNTRL0,WRITE_READ|ENDMA); 2121 } 2122 2123 if(data_count > 1) { 2124 data_count >>= 1; 2125 outsw(DATAPORT, CURRENT_SC->SCp.ptr, data_count); 2126 CURRENT_SC->SCp.ptr += 2 * data_count; 2127 CURRENT_SC->SCp.this_residual -= 2 * data_count; 2128 CMD_INC_RESID(CURRENT_SC, -2 * data_count); 2129 } 2130 2131 if (CURRENT_SC->SCp.this_residual == 0 && 2132 !sg_is_last(CURRENT_SC->SCp.buffer)) { 2133 /* advance to next buffer */ 2134 CURRENT_SC->SCp.buffer = sg_next(CURRENT_SC->SCp.buffer); 2135 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer); 2136 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length; 2137 } 2138 2139 the_time=jiffies + 100*HZ; 2140 while(TESTLO(DMASTAT, DFIFOEMP|INTSTAT) && time_before(jiffies,the_time)) 2141 barrier(); 2142 2143 if(TESTLO(DMASTAT, DFIFOEMP|INTSTAT)) { 2144 scmd_printk(KERN_ERR, CURRENT_SC, "dataout timeout\n"); 2145 break; 2146 } 2147 } 2148 } 2149 2150 static void datao_end(struct Scsi_Host *shpnt) 2151 { 2152 if(TESTLO(DMASTAT, DFIFOEMP)) { 2153 u32 datao_cnt = GETSTCNT(); 2154 int datao_out = DATA_LEN - scsi_get_resid(CURRENT_SC); 2155 int done; 2156 struct scatterlist *sg = scsi_sglist(CURRENT_SC); 2157 2158 CMD_INC_RESID(CURRENT_SC, datao_out - datao_cnt); 2159 2160 done = scsi_bufflen(CURRENT_SC) - scsi_get_resid(CURRENT_SC); 2161 /* Locate the first SG entry not yet sent */ 2162 while (done > 0 && !sg_is_last(sg)) { 2163 if (done < sg->length) 2164 break; 2165 done -= sg->length; 2166 sg = sg_next(sg); 2167 } 2168 2169 CURRENT_SC->SCp.buffer = sg; 2170 CURRENT_SC->SCp.ptr = SG_ADDRESS(CURRENT_SC->SCp.buffer) + done; 2171 CURRENT_SC->SCp.this_residual = CURRENT_SC->SCp.buffer->length - 2172 done; 2173 } 2174 2175 SETPORT(SXFRCTL0, CH1|CLRCH1|CLRSTCNT); 2176 SETPORT(SXFRCTL0, CH1); 2177 2178 SETPORT(DMACNTRL0, 0); 2179 } 2180 2181 /* 2182 * figure out what state we're in 2183 * 2184 */ 2185 static int update_state(struct Scsi_Host *shpnt) 2186 { 2187 int dataphase=0; 2188 unsigned int stat0 = GETPORT(SSTAT0); 2189 unsigned int stat1 = GETPORT(SSTAT1); 2190 2191 PREVSTATE = STATE; 2192 STATE=unknown; 2193 2194 if(stat1 & SCSIRSTI) { 2195 STATE=rsti; 2196 SETPORT(SCSISEQ,0); 2197 SETPORT(SSTAT1,SCSIRSTI); 2198 } else if (stat0 & SELDI && PREVSTATE == busfree) { 2199 STATE=seldi; 2200 } else if(stat0 & SELDO && CURRENT_SC && (CURRENT_SC->SCp.phase & selecting)) { 2201 STATE=seldo; 2202 } else if(stat1 & SELTO) { 2203 STATE=selto; 2204 } else if(stat1 & BUSFREE) { 2205 STATE=busfree; 2206 SETPORT(SSTAT1,BUSFREE); 2207 } else if(stat1 & SCSIPERR) { 2208 STATE=parerr; 2209 SETPORT(SSTAT1,SCSIPERR); 2210 } else if(stat1 & REQINIT) { 2211 switch(GETPORT(SCSISIG) & P_MASK) { 2212 case P_MSGI: STATE=msgi; break; 2213 case P_MSGO: STATE=msgo; break; 2214 case P_DATAO: STATE=datao; break; 2215 case P_DATAI: STATE=datai; break; 2216 case P_STATUS: STATE=status; break; 2217 case P_CMD: STATE=cmd; break; 2218 } 2219 dataphase=1; 2220 } 2221 2222 if((stat0 & SELDI) && STATE!=seldi && !dataphase) { 2223 scmd_printk(KERN_INFO, CURRENT_SC, "reselection missed?"); 2224 } 2225 2226 if(STATE!=PREVSTATE) { 2227 LASTSTATE=PREVSTATE; 2228 } 2229 2230 return dataphase; 2231 } 2232 2233 /* 2234 * handle parity error 2235 * 2236 * FIXME: in which phase? 2237 * 2238 */ 2239 static void parerr_run(struct Scsi_Host *shpnt) 2240 { 2241 scmd_printk(KERN_ERR, CURRENT_SC, "parity error\n"); 2242 done(shpnt, SAM_STAT_GOOD, DID_PARITY); 2243 } 2244 2245 /* 2246 * handle reset in 2247 * 2248 */ 2249 static void rsti_run(struct Scsi_Host *shpnt) 2250 { 2251 struct scsi_cmnd *ptr; 2252 2253 shost_printk(KERN_NOTICE, shpnt, "scsi reset in\n"); 2254 2255 ptr=DISCONNECTED_SC; 2256 while(ptr) { 2257 struct scsi_cmnd *next = SCNEXT(ptr); 2258 2259 if (!ptr->device->soft_reset) { 2260 remove_SC(&DISCONNECTED_SC, ptr); 2261 2262 kfree(ptr->host_scribble); 2263 ptr->host_scribble=NULL; 2264 2265 set_host_byte(ptr, DID_RESET); 2266 aha152x_scsi_done(ptr); 2267 } 2268 2269 ptr = next; 2270 } 2271 2272 if(CURRENT_SC && !CURRENT_SC->device->soft_reset) 2273 done(shpnt, SAM_STAT_GOOD, DID_RESET); 2274 } 2275 2276 2277 /* 2278 * bottom-half handler 2279 * 2280 */ 2281 static void is_complete(struct Scsi_Host *shpnt) 2282 { 2283 int dataphase; 2284 unsigned long flags; 2285 int pending; 2286 2287 if(!shpnt) 2288 return; 2289 2290 DO_LOCK(flags); 2291 2292 if( HOSTDATA(shpnt)->service==0 ) { 2293 DO_UNLOCK(flags); 2294 return; 2295 } 2296 2297 HOSTDATA(shpnt)->service = 0; 2298 2299 if(HOSTDATA(shpnt)->in_intr) { 2300 DO_UNLOCK(flags); 2301 /* aha152x_error never returns.. */ 2302 aha152x_error(shpnt, "bottom-half already running!?"); 2303 } 2304 HOSTDATA(shpnt)->in_intr++; 2305 2306 /* 2307 * loop while there are interrupt conditions pending 2308 * 2309 */ 2310 do { 2311 unsigned long start = jiffies; 2312 DO_UNLOCK(flags); 2313 2314 dataphase=update_state(shpnt); 2315 2316 /* 2317 * end previous state 2318 * 2319 */ 2320 if(PREVSTATE!=STATE && states[PREVSTATE].end) 2321 states[PREVSTATE].end(shpnt); 2322 2323 /* 2324 * disable SPIO mode if previous phase used it 2325 * and this one doesn't 2326 * 2327 */ 2328 if(states[PREVSTATE].spio && !states[STATE].spio) { 2329 SETPORT(SXFRCTL0, CH1); 2330 SETPORT(DMACNTRL0, 0); 2331 if(CURRENT_SC) 2332 CURRENT_SC->SCp.phase &= ~spiordy; 2333 } 2334 2335 /* 2336 * accept current dataphase phase 2337 * 2338 */ 2339 if(dataphase) { 2340 SETPORT(SSTAT0, REQINIT); 2341 SETPORT(SCSISIG, GETPORT(SCSISIG) & P_MASK); 2342 SETPORT(SSTAT1, PHASECHG); 2343 } 2344 2345 /* 2346 * enable SPIO mode if previous didn't use it 2347 * and this one does 2348 * 2349 */ 2350 if(!states[PREVSTATE].spio && states[STATE].spio) { 2351 SETPORT(DMACNTRL0, 0); 2352 SETPORT(SXFRCTL0, CH1|SPIOEN); 2353 if(CURRENT_SC) 2354 CURRENT_SC->SCp.phase |= spiordy; 2355 } 2356 2357 /* 2358 * initialize for new state 2359 * 2360 */ 2361 if(PREVSTATE!=STATE && states[STATE].init) 2362 states[STATE].init(shpnt); 2363 2364 /* 2365 * handle current state 2366 * 2367 */ 2368 if(states[STATE].run) 2369 states[STATE].run(shpnt); 2370 else 2371 scmd_printk(KERN_ERR, CURRENT_SC, 2372 "unexpected state (%x)\n", STATE); 2373 2374 /* 2375 * setup controller to interrupt on 2376 * the next expected condition and 2377 * loop if it's already there 2378 * 2379 */ 2380 DO_LOCK(flags); 2381 pending=setup_expected_interrupts(shpnt); 2382 #if defined(AHA152X_STAT) 2383 HOSTDATA(shpnt)->count[STATE]++; 2384 if(PREVSTATE!=STATE) 2385 HOSTDATA(shpnt)->count_trans[STATE]++; 2386 HOSTDATA(shpnt)->time[STATE] += jiffies-start; 2387 #endif 2388 2389 } while(pending); 2390 2391 /* 2392 * enable interrupts and leave bottom-half 2393 * 2394 */ 2395 HOSTDATA(shpnt)->in_intr--; 2396 SETBITS(DMACNTRL0, INTEN); 2397 DO_UNLOCK(flags); 2398 } 2399 2400 2401 /* 2402 * Dump the current driver status and panic 2403 */ 2404 static void aha152x_error(struct Scsi_Host *shpnt, char *msg) 2405 { 2406 shost_printk(KERN_EMERG, shpnt, "%s\n", msg); 2407 show_queues(shpnt); 2408 panic("aha152x panic\n"); 2409 } 2410 2411 /* 2412 * display enabled interrupts 2413 */ 2414 static void disp_enintr(struct Scsi_Host *shpnt) 2415 { 2416 int s0, s1; 2417 2418 s0 = GETPORT(SIMODE0); 2419 s1 = GETPORT(SIMODE1); 2420 2421 shost_printk(KERN_DEBUG, shpnt, 2422 "enabled interrupts (%s%s%s%s%s%s%s%s%s%s%s%s%s%s)\n", 2423 (s0 & ENSELDO) ? "ENSELDO " : "", 2424 (s0 & ENSELDI) ? "ENSELDI " : "", 2425 (s0 & ENSELINGO) ? "ENSELINGO " : "", 2426 (s0 & ENSWRAP) ? "ENSWRAP " : "", 2427 (s0 & ENSDONE) ? "ENSDONE " : "", 2428 (s0 & ENSPIORDY) ? "ENSPIORDY " : "", 2429 (s0 & ENDMADONE) ? "ENDMADONE " : "", 2430 (s1 & ENSELTIMO) ? "ENSELTIMO " : "", 2431 (s1 & ENATNTARG) ? "ENATNTARG " : "", 2432 (s1 & ENPHASEMIS) ? "ENPHASEMIS " : "", 2433 (s1 & ENBUSFREE) ? "ENBUSFREE " : "", 2434 (s1 & ENSCSIPERR) ? "ENSCSIPERR " : "", 2435 (s1 & ENPHASECHG) ? "ENPHASECHG " : "", 2436 (s1 & ENREQINIT) ? "ENREQINIT " : ""); 2437 } 2438 2439 /* 2440 * Show the command data of a command 2441 */ 2442 static void show_command(struct scsi_cmnd *ptr) 2443 { 2444 scsi_print_command(ptr); 2445 scmd_printk(KERN_DEBUG, ptr, 2446 "request_bufflen=%d; resid=%d; " 2447 "phase |%s%s%s%s%s%s%s%s%s; next=0x%p", 2448 scsi_bufflen(ptr), scsi_get_resid(ptr), 2449 (ptr->SCp.phase & not_issued) ? "not issued|" : "", 2450 (ptr->SCp.phase & selecting) ? "selecting|" : "", 2451 (ptr->SCp.phase & identified) ? "identified|" : "", 2452 (ptr->SCp.phase & disconnected) ? "disconnected|" : "", 2453 (ptr->SCp.phase & completed) ? "completed|" : "", 2454 (ptr->SCp.phase & spiordy) ? "spiordy|" : "", 2455 (ptr->SCp.phase & syncneg) ? "syncneg|" : "", 2456 (ptr->SCp.phase & aborted) ? "aborted|" : "", 2457 (ptr->SCp.phase & resetted) ? "resetted|" : "", 2458 (SCDATA(ptr)) ? SCNEXT(ptr) : NULL); 2459 } 2460 2461 /* 2462 * Dump the queued data 2463 */ 2464 static void show_queues(struct Scsi_Host *shpnt) 2465 { 2466 struct scsi_cmnd *ptr; 2467 unsigned long flags; 2468 2469 DO_LOCK(flags); 2470 printk(KERN_DEBUG "\nqueue status:\nissue_SC:\n"); 2471 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) 2472 show_command(ptr); 2473 DO_UNLOCK(flags); 2474 2475 printk(KERN_DEBUG "current_SC:\n"); 2476 if (CURRENT_SC) 2477 show_command(CURRENT_SC); 2478 else 2479 printk(KERN_DEBUG "none\n"); 2480 2481 printk(KERN_DEBUG "disconnected_SC:\n"); 2482 for (ptr = DISCONNECTED_SC; ptr; ptr = SCDATA(ptr) ? SCNEXT(ptr) : NULL) 2483 show_command(ptr); 2484 2485 disp_enintr(shpnt); 2486 } 2487 2488 static void get_command(struct seq_file *m, struct scsi_cmnd * ptr) 2489 { 2490 int i; 2491 2492 seq_printf(m, "%p: target=%d; lun=%d; cmnd=( ", 2493 ptr, ptr->device->id, (u8)ptr->device->lun); 2494 2495 for (i = 0; i < COMMAND_SIZE(ptr->cmnd[0]); i++) 2496 seq_printf(m, "0x%02x ", ptr->cmnd[i]); 2497 2498 seq_printf(m, "); resid=%d; residual=%d; buffers=%d; phase |", 2499 scsi_get_resid(ptr), ptr->SCp.this_residual, 2500 sg_nents(ptr->SCp.buffer) - 1); 2501 2502 if (ptr->SCp.phase & not_issued) 2503 seq_puts(m, "not issued|"); 2504 if (ptr->SCp.phase & selecting) 2505 seq_puts(m, "selecting|"); 2506 if (ptr->SCp.phase & disconnected) 2507 seq_puts(m, "disconnected|"); 2508 if (ptr->SCp.phase & aborted) 2509 seq_puts(m, "aborted|"); 2510 if (ptr->SCp.phase & identified) 2511 seq_puts(m, "identified|"); 2512 if (ptr->SCp.phase & completed) 2513 seq_puts(m, "completed|"); 2514 if (ptr->SCp.phase & spiordy) 2515 seq_puts(m, "spiordy|"); 2516 if (ptr->SCp.phase & syncneg) 2517 seq_puts(m, "syncneg|"); 2518 seq_printf(m, "; next=0x%p\n", SCNEXT(ptr)); 2519 } 2520 2521 static void get_ports(struct seq_file *m, struct Scsi_Host *shpnt) 2522 { 2523 int s; 2524 2525 seq_printf(m, "\n%s: %s(%s) ", CURRENT_SC ? "on bus" : "waiting", states[STATE].name, states[PREVSTATE].name); 2526 2527 s = GETPORT(SCSISEQ); 2528 seq_puts(m, "SCSISEQ( "); 2529 if (s & TEMODEO) 2530 seq_puts(m, "TARGET MODE "); 2531 if (s & ENSELO) 2532 seq_puts(m, "SELO "); 2533 if (s & ENSELI) 2534 seq_puts(m, "SELI "); 2535 if (s & ENRESELI) 2536 seq_puts(m, "RESELI "); 2537 if (s & ENAUTOATNO) 2538 seq_puts(m, "AUTOATNO "); 2539 if (s & ENAUTOATNI) 2540 seq_puts(m, "AUTOATNI "); 2541 if (s & ENAUTOATNP) 2542 seq_puts(m, "AUTOATNP "); 2543 if (s & SCSIRSTO) 2544 seq_puts(m, "SCSIRSTO "); 2545 seq_puts(m, ");"); 2546 2547 seq_puts(m, " SCSISIG("); 2548 s = GETPORT(SCSISIG); 2549 switch (s & P_MASK) { 2550 case P_DATAO: 2551 seq_puts(m, "DATA OUT"); 2552 break; 2553 case P_DATAI: 2554 seq_puts(m, "DATA IN"); 2555 break; 2556 case P_CMD: 2557 seq_puts(m, "COMMAND"); 2558 break; 2559 case P_STATUS: 2560 seq_puts(m, "STATUS"); 2561 break; 2562 case P_MSGO: 2563 seq_puts(m, "MESSAGE OUT"); 2564 break; 2565 case P_MSGI: 2566 seq_puts(m, "MESSAGE IN"); 2567 break; 2568 default: 2569 seq_puts(m, "*invalid*"); 2570 break; 2571 } 2572 2573 seq_puts(m, "); "); 2574 2575 seq_printf(m, "INTSTAT (%s); ", TESTHI(DMASTAT, INTSTAT) ? "hi" : "lo"); 2576 2577 seq_puts(m, "SSTAT( "); 2578 s = GETPORT(SSTAT0); 2579 if (s & TARGET) 2580 seq_puts(m, "TARGET "); 2581 if (s & SELDO) 2582 seq_puts(m, "SELDO "); 2583 if (s & SELDI) 2584 seq_puts(m, "SELDI "); 2585 if (s & SELINGO) 2586 seq_puts(m, "SELINGO "); 2587 if (s & SWRAP) 2588 seq_puts(m, "SWRAP "); 2589 if (s & SDONE) 2590 seq_puts(m, "SDONE "); 2591 if (s & SPIORDY) 2592 seq_puts(m, "SPIORDY "); 2593 if (s & DMADONE) 2594 seq_puts(m, "DMADONE "); 2595 2596 s = GETPORT(SSTAT1); 2597 if (s & SELTO) 2598 seq_puts(m, "SELTO "); 2599 if (s & ATNTARG) 2600 seq_puts(m, "ATNTARG "); 2601 if (s & SCSIRSTI) 2602 seq_puts(m, "SCSIRSTI "); 2603 if (s & PHASEMIS) 2604 seq_puts(m, "PHASEMIS "); 2605 if (s & BUSFREE) 2606 seq_puts(m, "BUSFREE "); 2607 if (s & SCSIPERR) 2608 seq_puts(m, "SCSIPERR "); 2609 if (s & PHASECHG) 2610 seq_puts(m, "PHASECHG "); 2611 if (s & REQINIT) 2612 seq_puts(m, "REQINIT "); 2613 seq_puts(m, "); "); 2614 2615 2616 seq_puts(m, "SSTAT( "); 2617 2618 s = GETPORT(SSTAT0) & GETPORT(SIMODE0); 2619 2620 if (s & TARGET) 2621 seq_puts(m, "TARGET "); 2622 if (s & SELDO) 2623 seq_puts(m, "SELDO "); 2624 if (s & SELDI) 2625 seq_puts(m, "SELDI "); 2626 if (s & SELINGO) 2627 seq_puts(m, "SELINGO "); 2628 if (s & SWRAP) 2629 seq_puts(m, "SWRAP "); 2630 if (s & SDONE) 2631 seq_puts(m, "SDONE "); 2632 if (s & SPIORDY) 2633 seq_puts(m, "SPIORDY "); 2634 if (s & DMADONE) 2635 seq_puts(m, "DMADONE "); 2636 2637 s = GETPORT(SSTAT1) & GETPORT(SIMODE1); 2638 2639 if (s & SELTO) 2640 seq_puts(m, "SELTO "); 2641 if (s & ATNTARG) 2642 seq_puts(m, "ATNTARG "); 2643 if (s & SCSIRSTI) 2644 seq_puts(m, "SCSIRSTI "); 2645 if (s & PHASEMIS) 2646 seq_puts(m, "PHASEMIS "); 2647 if (s & BUSFREE) 2648 seq_puts(m, "BUSFREE "); 2649 if (s & SCSIPERR) 2650 seq_puts(m, "SCSIPERR "); 2651 if (s & PHASECHG) 2652 seq_puts(m, "PHASECHG "); 2653 if (s & REQINIT) 2654 seq_puts(m, "REQINIT "); 2655 seq_puts(m, "); "); 2656 2657 seq_puts(m, "SXFRCTL0( "); 2658 2659 s = GETPORT(SXFRCTL0); 2660 if (s & SCSIEN) 2661 seq_puts(m, "SCSIEN "); 2662 if (s & DMAEN) 2663 seq_puts(m, "DMAEN "); 2664 if (s & CH1) 2665 seq_puts(m, "CH1 "); 2666 if (s & CLRSTCNT) 2667 seq_puts(m, "CLRSTCNT "); 2668 if (s & SPIOEN) 2669 seq_puts(m, "SPIOEN "); 2670 if (s & CLRCH1) 2671 seq_puts(m, "CLRCH1 "); 2672 seq_puts(m, "); "); 2673 2674 seq_puts(m, "SIGNAL( "); 2675 2676 s = GETPORT(SCSISIG); 2677 if (s & SIG_ATNI) 2678 seq_puts(m, "ATNI "); 2679 if (s & SIG_SELI) 2680 seq_puts(m, "SELI "); 2681 if (s & SIG_BSYI) 2682 seq_puts(m, "BSYI "); 2683 if (s & SIG_REQI) 2684 seq_puts(m, "REQI "); 2685 if (s & SIG_ACKI) 2686 seq_puts(m, "ACKI "); 2687 seq_puts(m, "); "); 2688 2689 seq_printf(m, "SELID(%02x), ", GETPORT(SELID)); 2690 2691 seq_printf(m, "STCNT(%d), ", GETSTCNT()); 2692 2693 seq_puts(m, "SSTAT2( "); 2694 2695 s = GETPORT(SSTAT2); 2696 if (s & SOFFSET) 2697 seq_puts(m, "SOFFSET "); 2698 if (s & SEMPTY) 2699 seq_puts(m, "SEMPTY "); 2700 if (s & SFULL) 2701 seq_puts(m, "SFULL "); 2702 seq_printf(m, "); SFCNT (%d); ", s & (SFULL | SFCNT)); 2703 2704 s = GETPORT(SSTAT3); 2705 seq_printf(m, "SCSICNT (%d), OFFCNT(%d), ", (s & 0xf0) >> 4, s & 0x0f); 2706 2707 seq_puts(m, "SSTAT4( "); 2708 s = GETPORT(SSTAT4); 2709 if (s & SYNCERR) 2710 seq_puts(m, "SYNCERR "); 2711 if (s & FWERR) 2712 seq_puts(m, "FWERR "); 2713 if (s & FRERR) 2714 seq_puts(m, "FRERR "); 2715 seq_puts(m, "); "); 2716 2717 seq_puts(m, "DMACNTRL0( "); 2718 s = GETPORT(DMACNTRL0); 2719 seq_printf(m, "%s ", s & _8BIT ? "8BIT" : "16BIT"); 2720 seq_printf(m, "%s ", s & DMA ? "DMA" : "PIO"); 2721 seq_printf(m, "%s ", s & WRITE_READ ? "WRITE" : "READ"); 2722 if (s & ENDMA) 2723 seq_puts(m, "ENDMA "); 2724 if (s & INTEN) 2725 seq_puts(m, "INTEN "); 2726 if (s & RSTFIFO) 2727 seq_puts(m, "RSTFIFO "); 2728 if (s & SWINT) 2729 seq_puts(m, "SWINT "); 2730 seq_puts(m, "); "); 2731 2732 seq_puts(m, "DMASTAT( "); 2733 s = GETPORT(DMASTAT); 2734 if (s & ATDONE) 2735 seq_puts(m, "ATDONE "); 2736 if (s & WORDRDY) 2737 seq_puts(m, "WORDRDY "); 2738 if (s & DFIFOFULL) 2739 seq_puts(m, "DFIFOFULL "); 2740 if (s & DFIFOEMP) 2741 seq_puts(m, "DFIFOEMP "); 2742 seq_puts(m, ")\n"); 2743 2744 seq_puts(m, "enabled interrupts( "); 2745 2746 s = GETPORT(SIMODE0); 2747 if (s & ENSELDO) 2748 seq_puts(m, "ENSELDO "); 2749 if (s & ENSELDI) 2750 seq_puts(m, "ENSELDI "); 2751 if (s & ENSELINGO) 2752 seq_puts(m, "ENSELINGO "); 2753 if (s & ENSWRAP) 2754 seq_puts(m, "ENSWRAP "); 2755 if (s & ENSDONE) 2756 seq_puts(m, "ENSDONE "); 2757 if (s & ENSPIORDY) 2758 seq_puts(m, "ENSPIORDY "); 2759 if (s & ENDMADONE) 2760 seq_puts(m, "ENDMADONE "); 2761 2762 s = GETPORT(SIMODE1); 2763 if (s & ENSELTIMO) 2764 seq_puts(m, "ENSELTIMO "); 2765 if (s & ENATNTARG) 2766 seq_puts(m, "ENATNTARG "); 2767 if (s & ENPHASEMIS) 2768 seq_puts(m, "ENPHASEMIS "); 2769 if (s & ENBUSFREE) 2770 seq_puts(m, "ENBUSFREE "); 2771 if (s & ENSCSIPERR) 2772 seq_puts(m, "ENSCSIPERR "); 2773 if (s & ENPHASECHG) 2774 seq_puts(m, "ENPHASECHG "); 2775 if (s & ENREQINIT) 2776 seq_puts(m, "ENREQINIT "); 2777 seq_puts(m, ")\n"); 2778 } 2779 2780 static int aha152x_set_info(struct Scsi_Host *shpnt, char *buffer, int length) 2781 { 2782 if(!shpnt || !buffer || length<8 || strncmp("aha152x ", buffer, 8)!=0) 2783 return -EINVAL; 2784 2785 #if defined(AHA152X_STAT) 2786 if(length>13 && strncmp("reset", buffer+8, 5)==0) { 2787 int i; 2788 2789 HOSTDATA(shpnt)->total_commands=0; 2790 HOSTDATA(shpnt)->disconnections=0; 2791 HOSTDATA(shpnt)->busfree_without_any_action=0; 2792 HOSTDATA(shpnt)->busfree_without_old_command=0; 2793 HOSTDATA(shpnt)->busfree_without_new_command=0; 2794 HOSTDATA(shpnt)->busfree_without_done_command=0; 2795 HOSTDATA(shpnt)->busfree_with_check_condition=0; 2796 for (i = idle; i<maxstate; i++) { 2797 HOSTDATA(shpnt)->count[i]=0; 2798 HOSTDATA(shpnt)->count_trans[i]=0; 2799 HOSTDATA(shpnt)->time[i]=0; 2800 } 2801 2802 shost_printk(KERN_INFO, shpnt, "aha152x: stats reset.\n"); 2803 2804 } else 2805 #endif 2806 { 2807 return -EINVAL; 2808 } 2809 2810 2811 return length; 2812 } 2813 2814 static int aha152x_show_info(struct seq_file *m, struct Scsi_Host *shpnt) 2815 { 2816 int i; 2817 struct scsi_cmnd *ptr; 2818 unsigned long flags; 2819 2820 seq_puts(m, AHA152X_REVID "\n"); 2821 2822 seq_printf(m, "ioports 0x%04lx to 0x%04lx\n", 2823 shpnt->io_port, shpnt->io_port + shpnt->n_io_port - 1); 2824 seq_printf(m, "interrupt 0x%02x\n", shpnt->irq); 2825 seq_printf(m, "disconnection/reconnection %s\n", 2826 RECONNECT ? "enabled" : "disabled"); 2827 seq_printf(m, "parity checking %s\n", 2828 PARITY ? "enabled" : "disabled"); 2829 seq_printf(m, "synchronous transfers %s\n", 2830 SYNCHRONOUS ? "enabled" : "disabled"); 2831 seq_printf(m, "%d commands currently queued\n", HOSTDATA(shpnt)->commands); 2832 2833 if(SYNCHRONOUS) { 2834 seq_puts(m, "synchronously operating targets (tick=50 ns):\n"); 2835 for (i = 0; i < 8; i++) 2836 if (HOSTDATA(shpnt)->syncrate[i] & 0x7f) 2837 seq_printf(m, "target %d: period %dT/%dns; req/ack offset %d\n", 2838 i, 2839 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2), 2840 (((HOSTDATA(shpnt)->syncrate[i] & 0x70) >> 4) + 2) * 50, 2841 HOSTDATA(shpnt)->syncrate[i] & 0x0f); 2842 } 2843 seq_puts(m, "\nqueue status:\n"); 2844 DO_LOCK(flags); 2845 if (ISSUE_SC) { 2846 seq_puts(m, "not yet issued commands:\n"); 2847 for (ptr = ISSUE_SC; ptr; ptr = SCNEXT(ptr)) 2848 get_command(m, ptr); 2849 } else 2850 seq_puts(m, "no not yet issued commands\n"); 2851 DO_UNLOCK(flags); 2852 2853 if (CURRENT_SC) { 2854 seq_puts(m, "current command:\n"); 2855 get_command(m, CURRENT_SC); 2856 } else 2857 seq_puts(m, "no current command\n"); 2858 2859 if (DISCONNECTED_SC) { 2860 seq_puts(m, "disconnected commands:\n"); 2861 for (ptr = DISCONNECTED_SC; ptr; ptr = SCNEXT(ptr)) 2862 get_command(m, ptr); 2863 } else 2864 seq_puts(m, "no disconnected commands\n"); 2865 2866 get_ports(m, shpnt); 2867 2868 #if defined(AHA152X_STAT) 2869 seq_printf(m, "statistics:\n" 2870 "total commands: %d\n" 2871 "disconnections: %d\n" 2872 "busfree with check condition: %d\n" 2873 "busfree without old command: %d\n" 2874 "busfree without new command: %d\n" 2875 "busfree without done command: %d\n" 2876 "busfree without any action: %d\n" 2877 "state " 2878 "transitions " 2879 "count " 2880 "time\n", 2881 HOSTDATA(shpnt)->total_commands, 2882 HOSTDATA(shpnt)->disconnections, 2883 HOSTDATA(shpnt)->busfree_with_check_condition, 2884 HOSTDATA(shpnt)->busfree_without_old_command, 2885 HOSTDATA(shpnt)->busfree_without_new_command, 2886 HOSTDATA(shpnt)->busfree_without_done_command, 2887 HOSTDATA(shpnt)->busfree_without_any_action); 2888 for(i=0; i<maxstate; i++) { 2889 seq_printf(m, "%-10s %-12d %-12d %-12ld\n", 2890 states[i].name, 2891 HOSTDATA(shpnt)->count_trans[i], 2892 HOSTDATA(shpnt)->count[i], 2893 HOSTDATA(shpnt)->time[i]); 2894 } 2895 #endif 2896 return 0; 2897 } 2898 2899 static int aha152x_adjust_queue(struct scsi_device *device) 2900 { 2901 blk_queue_bounce_limit(device->request_queue, BLK_BOUNCE_HIGH); 2902 return 0; 2903 } 2904 2905 static struct scsi_host_template aha152x_driver_template = { 2906 .module = THIS_MODULE, 2907 .name = AHA152X_REVID, 2908 .proc_name = "aha152x", 2909 .show_info = aha152x_show_info, 2910 .write_info = aha152x_set_info, 2911 .queuecommand = aha152x_queue, 2912 .eh_abort_handler = aha152x_abort, 2913 .eh_device_reset_handler = aha152x_device_reset, 2914 .eh_bus_reset_handler = aha152x_bus_reset, 2915 .bios_param = aha152x_biosparam, 2916 .can_queue = 1, 2917 .this_id = 7, 2918 .sg_tablesize = SG_ALL, 2919 .dma_boundary = PAGE_SIZE - 1, 2920 .slave_alloc = aha152x_adjust_queue, 2921 }; 2922 2923 #if !defined(AHA152X_PCMCIA) 2924 static int setup_count; 2925 static struct aha152x_setup setup[2]; 2926 2927 /* possible i/o addresses for the AIC-6260; default first */ 2928 static unsigned short ports[] = { 0x340, 0x140 }; 2929 2930 #if !defined(SKIP_BIOSTEST) 2931 /* possible locations for the Adaptec BIOS; defaults first */ 2932 static unsigned int addresses[] = 2933 { 2934 0xdc000, /* default first */ 2935 0xc8000, 2936 0xcc000, 2937 0xd0000, 2938 0xd4000, 2939 0xd8000, 2940 0xe0000, 2941 0xeb800, /* VTech Platinum SMP */ 2942 0xf0000, 2943 }; 2944 2945 /* signatures for various AIC-6[23]60 based controllers. 2946 The point in detecting signatures is to avoid useless and maybe 2947 harmful probes on ports. I'm not sure that all listed boards pass 2948 auto-configuration. For those which fail the BIOS signature is 2949 obsolete, because user intervention to supply the configuration is 2950 needed anyway. May be an information whether or not the BIOS supports 2951 extended translation could be also useful here. */ 2952 static struct signature { 2953 unsigned char *signature; 2954 int sig_offset; 2955 int sig_length; 2956 } signatures[] = 2957 { 2958 { "Adaptec AHA-1520 BIOS", 0x102e, 21 }, 2959 /* Adaptec 152x */ 2960 { "Adaptec AHA-1520B", 0x000b, 17 }, 2961 /* Adaptec 152x rev B */ 2962 { "Adaptec AHA-1520B", 0x0026, 17 }, 2963 /* Iomega Jaz Jet ISA (AIC6370Q) */ 2964 { "Adaptec ASW-B626 BIOS", 0x1029, 21 }, 2965 /* on-board controller */ 2966 { "Adaptec BIOS: ASW-B626", 0x000f, 22 }, 2967 /* on-board controller */ 2968 { "Adaptec ASW-B626 S2", 0x2e6c, 19 }, 2969 /* on-board controller */ 2970 { "Adaptec BIOS:AIC-6360", 0x000c, 21 }, 2971 /* on-board controller */ 2972 { "ScsiPro SP-360 BIOS", 0x2873, 19 }, 2973 /* ScsiPro-Controller */ 2974 { "GA-400 LOCAL BUS SCSI BIOS", 0x102e, 26 }, 2975 /* Gigabyte Local-Bus-SCSI */ 2976 { "Adaptec BIOS:AVA-282X", 0x000c, 21 }, 2977 /* Adaptec 282x */ 2978 { "Adaptec IBM Dock II SCSI", 0x2edd, 24 }, 2979 /* IBM Thinkpad Dock II */ 2980 { "Adaptec BIOS:AHA-1532P", 0x001c, 22 }, 2981 /* IBM Thinkpad Dock II SCSI */ 2982 { "DTC3520A Host Adapter BIOS", 0x318a, 26 }, 2983 /* DTC 3520A ISA SCSI */ 2984 }; 2985 #endif /* !SKIP_BIOSTEST */ 2986 2987 /* 2988 * Test, if port_base is valid. 2989 * 2990 */ 2991 static int aha152x_porttest(int io_port) 2992 { 2993 int i; 2994 2995 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ 2996 for (i = 0; i < 16; i++) 2997 SETPORT(io_port + O_STACK, i); 2998 2999 SETPORT(io_port + O_DMACNTRL1, 0); /* reset stack pointer */ 3000 for (i = 0; i < 16 && GETPORT(io_port + O_STACK) == i; i++) 3001 ; 3002 3003 return (i == 16); 3004 } 3005 3006 static int tc1550_porttest(int io_port) 3007 { 3008 int i; 3009 3010 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ 3011 for (i = 0; i < 16; i++) 3012 SETPORT(io_port + O_STACK, i); 3013 3014 SETPORT(io_port + O_TC_DMACNTRL1, 0); /* reset stack pointer */ 3015 for (i = 0; i < 16 && GETPORT(io_port + O_TC_STACK) == i; i++) 3016 ; 3017 3018 return (i == 16); 3019 } 3020 3021 3022 static int checksetup(struct aha152x_setup *setup) 3023 { 3024 int i; 3025 for (i = 0; i < ARRAY_SIZE(ports) && (setup->io_port != ports[i]); i++) 3026 ; 3027 3028 if (i == ARRAY_SIZE(ports)) 3029 return 0; 3030 3031 if (!request_region(setup->io_port, IO_RANGE, "aha152x")) { 3032 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup->io_port); 3033 return 0; 3034 } 3035 3036 if( aha152x_porttest(setup->io_port) ) { 3037 setup->tc1550=0; 3038 } else if( tc1550_porttest(setup->io_port) ) { 3039 setup->tc1550=1; 3040 } else { 3041 release_region(setup->io_port, IO_RANGE); 3042 return 0; 3043 } 3044 3045 release_region(setup->io_port, IO_RANGE); 3046 3047 if ((setup->irq < IRQ_MIN) || (setup->irq > IRQ_MAX)) 3048 return 0; 3049 3050 if ((setup->scsiid < 0) || (setup->scsiid > 7)) 3051 return 0; 3052 3053 if ((setup->reconnect < 0) || (setup->reconnect > 1)) 3054 return 0; 3055 3056 if ((setup->parity < 0) || (setup->parity > 1)) 3057 return 0; 3058 3059 if ((setup->synchronous < 0) || (setup->synchronous > 1)) 3060 return 0; 3061 3062 if ((setup->ext_trans < 0) || (setup->ext_trans > 1)) 3063 return 0; 3064 3065 3066 return 1; 3067 } 3068 3069 3070 static int __init aha152x_init(void) 3071 { 3072 int i, j, ok; 3073 #if defined(AUTOCONF) 3074 aha152x_config conf; 3075 #endif 3076 #ifdef __ISAPNP__ 3077 struct pnp_dev *dev=NULL, *pnpdev[2] = {NULL, NULL}; 3078 #endif 3079 3080 if ( setup_count ) { 3081 printk(KERN_INFO "aha152x: processing commandline: "); 3082 3083 for (i = 0; i<setup_count; i++) { 3084 if (!checksetup(&setup[i])) { 3085 printk(KERN_ERR "\naha152x: %s\n", setup[i].conf); 3086 printk(KERN_ERR "aha152x: invalid line\n"); 3087 } 3088 } 3089 printk("ok\n"); 3090 } 3091 3092 #if defined(SETUP0) 3093 if (setup_count < ARRAY_SIZE(setup)) { 3094 struct aha152x_setup override = SETUP0; 3095 3096 if (setup_count == 0 || (override.io_port != setup[0].io_port)) { 3097 if (!checksetup(&override)) { 3098 printk(KERN_ERR "\naha152x: invalid override SETUP0={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", 3099 override.io_port, 3100 override.irq, 3101 override.scsiid, 3102 override.reconnect, 3103 override.parity, 3104 override.synchronous, 3105 override.delay, 3106 override.ext_trans); 3107 } else 3108 setup[setup_count++] = override; 3109 } 3110 } 3111 #endif 3112 3113 #if defined(SETUP1) 3114 if (setup_count < ARRAY_SIZE(setup)) { 3115 struct aha152x_setup override = SETUP1; 3116 3117 if (setup_count == 0 || (override.io_port != setup[0].io_port)) { 3118 if (!checksetup(&override)) { 3119 printk(KERN_ERR "\naha152x: invalid override SETUP1={0x%x,%d,%d,%d,%d,%d,%d,%d}\n", 3120 override.io_port, 3121 override.irq, 3122 override.scsiid, 3123 override.reconnect, 3124 override.parity, 3125 override.synchronous, 3126 override.delay, 3127 override.ext_trans); 3128 } else 3129 setup[setup_count++] = override; 3130 } 3131 } 3132 #endif 3133 3134 #if defined(MODULE) 3135 if (setup_count<ARRAY_SIZE(setup) && (aha152x[0]!=0 || io[0]!=0 || irq[0]!=0)) { 3136 if(aha152x[0]!=0) { 3137 setup[setup_count].conf = ""; 3138 setup[setup_count].io_port = aha152x[0]; 3139 setup[setup_count].irq = aha152x[1]; 3140 setup[setup_count].scsiid = aha152x[2]; 3141 setup[setup_count].reconnect = aha152x[3]; 3142 setup[setup_count].parity = aha152x[4]; 3143 setup[setup_count].synchronous = aha152x[5]; 3144 setup[setup_count].delay = aha152x[6]; 3145 setup[setup_count].ext_trans = aha152x[7]; 3146 } else if (io[0] != 0 || irq[0] != 0) { 3147 if(io[0]!=0) setup[setup_count].io_port = io[0]; 3148 if(irq[0]!=0) setup[setup_count].irq = irq[0]; 3149 3150 setup[setup_count].scsiid = scsiid[0]; 3151 setup[setup_count].reconnect = reconnect[0]; 3152 setup[setup_count].parity = parity[0]; 3153 setup[setup_count].synchronous = sync[0]; 3154 setup[setup_count].delay = delay[0]; 3155 setup[setup_count].ext_trans = exttrans[0]; 3156 } 3157 3158 if (checksetup(&setup[setup_count])) 3159 setup_count++; 3160 else 3161 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", 3162 setup[setup_count].io_port, 3163 setup[setup_count].irq, 3164 setup[setup_count].scsiid, 3165 setup[setup_count].reconnect, 3166 setup[setup_count].parity, 3167 setup[setup_count].synchronous, 3168 setup[setup_count].delay, 3169 setup[setup_count].ext_trans); 3170 } 3171 3172 if (setup_count<ARRAY_SIZE(setup) && (aha152x1[0]!=0 || io[1]!=0 || irq[1]!=0)) { 3173 if(aha152x1[0]!=0) { 3174 setup[setup_count].conf = ""; 3175 setup[setup_count].io_port = aha152x1[0]; 3176 setup[setup_count].irq = aha152x1[1]; 3177 setup[setup_count].scsiid = aha152x1[2]; 3178 setup[setup_count].reconnect = aha152x1[3]; 3179 setup[setup_count].parity = aha152x1[4]; 3180 setup[setup_count].synchronous = aha152x1[5]; 3181 setup[setup_count].delay = aha152x1[6]; 3182 setup[setup_count].ext_trans = aha152x1[7]; 3183 } else if (io[1] != 0 || irq[1] != 0) { 3184 if(io[1]!=0) setup[setup_count].io_port = io[1]; 3185 if(irq[1]!=0) setup[setup_count].irq = irq[1]; 3186 3187 setup[setup_count].scsiid = scsiid[1]; 3188 setup[setup_count].reconnect = reconnect[1]; 3189 setup[setup_count].parity = parity[1]; 3190 setup[setup_count].synchronous = sync[1]; 3191 setup[setup_count].delay = delay[1]; 3192 setup[setup_count].ext_trans = exttrans[1]; 3193 } 3194 if (checksetup(&setup[setup_count])) 3195 setup_count++; 3196 else 3197 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", 3198 setup[setup_count].io_port, 3199 setup[setup_count].irq, 3200 setup[setup_count].scsiid, 3201 setup[setup_count].reconnect, 3202 setup[setup_count].parity, 3203 setup[setup_count].synchronous, 3204 setup[setup_count].delay, 3205 setup[setup_count].ext_trans); 3206 } 3207 #endif 3208 3209 #ifdef __ISAPNP__ 3210 for(i=0; setup_count<ARRAY_SIZE(setup) && id_table[i].vendor; i++) { 3211 while ( setup_count<ARRAY_SIZE(setup) && 3212 (dev=pnp_find_dev(NULL, id_table[i].vendor, id_table[i].function, dev)) ) { 3213 if (pnp_device_attach(dev) < 0) 3214 continue; 3215 3216 if (pnp_activate_dev(dev) < 0) { 3217 pnp_device_detach(dev); 3218 continue; 3219 } 3220 3221 if (!pnp_port_valid(dev, 0)) { 3222 pnp_device_detach(dev); 3223 continue; 3224 } 3225 3226 if (setup_count==1 && pnp_port_start(dev, 0)==setup[0].io_port) { 3227 pnp_device_detach(dev); 3228 continue; 3229 } 3230 3231 setup[setup_count].io_port = pnp_port_start(dev, 0); 3232 setup[setup_count].irq = pnp_irq(dev, 0); 3233 setup[setup_count].scsiid = 7; 3234 setup[setup_count].reconnect = 1; 3235 setup[setup_count].parity = 1; 3236 setup[setup_count].synchronous = 1; 3237 setup[setup_count].delay = DELAY_DEFAULT; 3238 setup[setup_count].ext_trans = 0; 3239 #if defined(__ISAPNP__) 3240 pnpdev[setup_count] = dev; 3241 #endif 3242 printk (KERN_INFO 3243 "aha152x: found ISAPnP adapter at io=0x%03x, irq=%d\n", 3244 setup[setup_count].io_port, setup[setup_count].irq); 3245 setup_count++; 3246 } 3247 } 3248 #endif 3249 3250 #if defined(AUTOCONF) 3251 if (setup_count<ARRAY_SIZE(setup)) { 3252 #if !defined(SKIP_BIOSTEST) 3253 ok = 0; 3254 for (i = 0; i < ARRAY_SIZE(addresses) && !ok; i++) { 3255 void __iomem *p = ioremap(addresses[i], 0x4000); 3256 if (!p) 3257 continue; 3258 for (j = 0; j<ARRAY_SIZE(signatures) && !ok; j++) 3259 ok = check_signature(p + signatures[j].sig_offset, 3260 signatures[j].signature, signatures[j].sig_length); 3261 iounmap(p); 3262 } 3263 if (!ok && setup_count == 0) 3264 return -ENODEV; 3265 3266 printk(KERN_INFO "aha152x: BIOS test: passed, "); 3267 #else 3268 printk(KERN_INFO "aha152x: "); 3269 #endif /* !SKIP_BIOSTEST */ 3270 3271 ok = 0; 3272 for (i = 0; i < ARRAY_SIZE(ports) && setup_count < 2; i++) { 3273 if ((setup_count == 1) && (setup[0].io_port == ports[i])) 3274 continue; 3275 3276 if (!request_region(ports[i], IO_RANGE, "aha152x")) { 3277 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", ports[i]); 3278 continue; 3279 } 3280 3281 if (aha152x_porttest(ports[i])) { 3282 setup[setup_count].tc1550 = 0; 3283 3284 conf.cf_port = 3285 (GETPORT(ports[i] + O_PORTA) << 8) + GETPORT(ports[i] + O_PORTB); 3286 } else if (tc1550_porttest(ports[i])) { 3287 setup[setup_count].tc1550 = 1; 3288 3289 conf.cf_port = 3290 (GETPORT(ports[i] + O_TC_PORTA) << 8) + GETPORT(ports[i] + O_TC_PORTB); 3291 } else { 3292 release_region(ports[i], IO_RANGE); 3293 continue; 3294 } 3295 3296 release_region(ports[i], IO_RANGE); 3297 3298 ok++; 3299 setup[setup_count].io_port = ports[i]; 3300 setup[setup_count].irq = IRQ_MIN + conf.cf_irq; 3301 setup[setup_count].scsiid = conf.cf_id; 3302 setup[setup_count].reconnect = conf.cf_tardisc; 3303 setup[setup_count].parity = !conf.cf_parity; 3304 setup[setup_count].synchronous = conf.cf_syncneg; 3305 setup[setup_count].delay = DELAY_DEFAULT; 3306 setup[setup_count].ext_trans = 0; 3307 setup_count++; 3308 3309 } 3310 3311 if (ok) 3312 printk("auto configuration: ok, "); 3313 } 3314 #endif 3315 3316 printk("%d controller(s) configured\n", setup_count); 3317 3318 for (i=0; i<setup_count; i++) { 3319 if ( request_region(setup[i].io_port, IO_RANGE, "aha152x") ) { 3320 struct Scsi_Host *shpnt = aha152x_probe_one(&setup[i]); 3321 3322 if( !shpnt ) { 3323 release_region(setup[i].io_port, IO_RANGE); 3324 #if defined(__ISAPNP__) 3325 } else if( pnpdev[i] ) { 3326 HOSTDATA(shpnt)->pnpdev=pnpdev[i]; 3327 pnpdev[i]=NULL; 3328 #endif 3329 } 3330 } else { 3331 printk(KERN_ERR "aha152x: io port 0x%x busy.\n", setup[i].io_port); 3332 } 3333 3334 #if defined(__ISAPNP__) 3335 if( pnpdev[i] ) 3336 pnp_device_detach(pnpdev[i]); 3337 #endif 3338 } 3339 3340 return 0; 3341 } 3342 3343 static void __exit aha152x_exit(void) 3344 { 3345 struct aha152x_hostdata *hd, *tmp; 3346 3347 list_for_each_entry_safe(hd, tmp, &aha152x_host_list, host_list) { 3348 struct Scsi_Host *shost = container_of((void *)hd, struct Scsi_Host, hostdata); 3349 3350 aha152x_release(shost); 3351 } 3352 } 3353 3354 module_init(aha152x_init); 3355 module_exit(aha152x_exit); 3356 3357 #if !defined(MODULE) 3358 static int __init aha152x_setup(char *str) 3359 { 3360 int ints[10]; 3361 3362 get_options(str, ARRAY_SIZE(ints), ints); 3363 3364 if(setup_count>=ARRAY_SIZE(setup)) { 3365 printk(KERN_ERR "aha152x: you can only configure up to two controllers\n"); 3366 return 1; 3367 } 3368 3369 setup[setup_count].conf = str; 3370 setup[setup_count].io_port = ints[0] >= 1 ? ints[1] : 0x340; 3371 setup[setup_count].irq = ints[0] >= 2 ? ints[2] : 11; 3372 setup[setup_count].scsiid = ints[0] >= 3 ? ints[3] : 7; 3373 setup[setup_count].reconnect = ints[0] >= 4 ? ints[4] : 1; 3374 setup[setup_count].parity = ints[0] >= 5 ? ints[5] : 1; 3375 setup[setup_count].synchronous = ints[0] >= 6 ? ints[6] : 1; 3376 setup[setup_count].delay = ints[0] >= 7 ? ints[7] : DELAY_DEFAULT; 3377 setup[setup_count].ext_trans = ints[0] >= 8 ? ints[8] : 0; 3378 if (ints[0] > 8) { /*}*/ 3379 printk(KERN_NOTICE "aha152x: usage: aha152x=<IOBASE>[,<IRQ>[,<SCSI ID>" 3380 "[,<RECONNECT>[,<PARITY>[,<SYNCHRONOUS>[,<DELAY>[,<EXT_TRANS>]]]]]]]\n"); 3381 } else { 3382 setup_count++; 3383 return 0; 3384 } 3385 3386 return 1; 3387 } 3388 __setup("aha152x=", aha152x_setup); 3389 #endif 3390 3391 #endif /* !AHA152X_PCMCIA */ 3392