1 /*====================================================================== 2 3 NinjaSCSI-3 / NinjaSCSI-32Bi PCMCIA SCSI host adapter card driver 4 By: YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp> 5 6 Ver.2.8 Support 32bit MMIO mode 7 Support Synchronous Data Transfer Request (SDTR) mode 8 Ver.2.0 Support 32bit PIO mode 9 Ver.1.1.2 Fix for scatter list buffer exceeds 10 Ver.1.1 Support scatter list 11 Ver.0.1 Initial version 12 13 This software may be used and distributed according to the terms of 14 the GNU General Public License. 15 16 ======================================================================*/ 17 18 /*********************************************************************** 19 This driver is for these PCcards. 20 21 I-O DATA PCSC-F (Workbit NinjaSCSI-3) 22 "WBT", "NinjaSCSI-3", "R1.0" 23 I-O DATA CBSC-II (Workbit NinjaSCSI-32Bi in 16bit mode) 24 "IO DATA", "CBSC16 ", "1" 25 26 ***********************************************************************/ 27 28 #include <linux/module.h> 29 #include <linux/kernel.h> 30 #include <linux/init.h> 31 #include <linux/slab.h> 32 #include <linux/string.h> 33 #include <linux/timer.h> 34 #include <linux/ioport.h> 35 #include <linux/delay.h> 36 #include <linux/interrupt.h> 37 #include <linux/major.h> 38 #include <linux/blkdev.h> 39 #include <linux/stat.h> 40 41 #include <asm/io.h> 42 #include <asm/irq.h> 43 44 #include <../drivers/scsi/scsi.h> 45 #include <scsi/scsi_host.h> 46 47 #include <scsi/scsi.h> 48 #include <scsi/scsi_ioctl.h> 49 50 #include <pcmcia/cistpl.h> 51 #include <pcmcia/cisreg.h> 52 #include <pcmcia/ds.h> 53 54 #include "nsp_cs.h" 55 56 MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>"); 57 MODULE_DESCRIPTION("WorkBit NinjaSCSI-3 / NinjaSCSI-32Bi(16bit) PCMCIA SCSI host adapter module"); 58 MODULE_SUPPORTED_DEVICE("sd,sr,sg,st"); 59 #ifdef MODULE_LICENSE 60 MODULE_LICENSE("GPL"); 61 #endif 62 63 #include "nsp_io.h" 64 65 /*====================================================================*/ 66 /* Parameters that can be set with 'insmod' */ 67 68 static int nsp_burst_mode = BURST_MEM32; 69 module_param(nsp_burst_mode, int, 0); 70 MODULE_PARM_DESC(nsp_burst_mode, "Burst transfer mode (0=io8, 1=io32, 2=mem32(default))"); 71 72 /* Release IO ports after configuration? */ 73 static int free_ports = 0; 74 module_param(free_ports, bool, 0); 75 MODULE_PARM_DESC(free_ports, "Release IO ports after configuration? (default: 0 (=no))"); 76 77 static struct scsi_host_template nsp_driver_template = { 78 .proc_name = "nsp_cs", 79 .proc_info = nsp_proc_info, 80 .name = "WorkBit NinjaSCSI-3/32Bi(16bit)", 81 .info = nsp_info, 82 .queuecommand = nsp_queuecommand, 83 /* .eh_abort_handler = nsp_eh_abort,*/ 84 .eh_bus_reset_handler = nsp_eh_bus_reset, 85 .eh_host_reset_handler = nsp_eh_host_reset, 86 .can_queue = 1, 87 .this_id = NSP_INITIATOR_ID, 88 .sg_tablesize = SG_ALL, 89 .cmd_per_lun = 1, 90 .use_clustering = DISABLE_CLUSTERING, 91 }; 92 93 static nsp_hw_data nsp_data_base; /* attach <-> detect glue */ 94 95 96 97 /* 98 * debug, error print 99 */ 100 #ifndef NSP_DEBUG 101 # define NSP_DEBUG_MASK 0x000000 102 # define nsp_msg(type, args...) nsp_cs_message("", 0, (type), args) 103 # define nsp_dbg(mask, args...) /* */ 104 #else 105 # define NSP_DEBUG_MASK 0xffffff 106 # define nsp_msg(type, args...) \ 107 nsp_cs_message (__func__, __LINE__, (type), args) 108 # define nsp_dbg(mask, args...) \ 109 nsp_cs_dmessage(__func__, __LINE__, (mask), args) 110 #endif 111 112 #define NSP_DEBUG_QUEUECOMMAND BIT(0) 113 #define NSP_DEBUG_REGISTER BIT(1) 114 #define NSP_DEBUG_AUTOSCSI BIT(2) 115 #define NSP_DEBUG_INTR BIT(3) 116 #define NSP_DEBUG_SGLIST BIT(4) 117 #define NSP_DEBUG_BUSFREE BIT(5) 118 #define NSP_DEBUG_CDB_CONTENTS BIT(6) 119 #define NSP_DEBUG_RESELECTION BIT(7) 120 #define NSP_DEBUG_MSGINOCCUR BIT(8) 121 #define NSP_DEBUG_EEPROM BIT(9) 122 #define NSP_DEBUG_MSGOUTOCCUR BIT(10) 123 #define NSP_DEBUG_BUSRESET BIT(11) 124 #define NSP_DEBUG_RESTART BIT(12) 125 #define NSP_DEBUG_SYNC BIT(13) 126 #define NSP_DEBUG_WAIT BIT(14) 127 #define NSP_DEBUG_TARGETFLAG BIT(15) 128 #define NSP_DEBUG_PROC BIT(16) 129 #define NSP_DEBUG_INIT BIT(17) 130 #define NSP_DEBUG_DATA_IO BIT(18) 131 #define NSP_SPECIAL_PRINT_REGISTER BIT(20) 132 133 #define NSP_DEBUG_BUF_LEN 150 134 135 static inline void nsp_inc_resid(struct scsi_cmnd *SCpnt, int residInc) 136 { 137 scsi_set_resid(SCpnt, scsi_get_resid(SCpnt) + residInc); 138 } 139 140 static void nsp_cs_message(const char *func, int line, char *type, char *fmt, ...) 141 { 142 va_list args; 143 char buf[NSP_DEBUG_BUF_LEN]; 144 145 va_start(args, fmt); 146 vsnprintf(buf, sizeof(buf), fmt, args); 147 va_end(args); 148 149 #ifndef NSP_DEBUG 150 printk("%snsp_cs: %s\n", type, buf); 151 #else 152 printk("%snsp_cs: %s (%d): %s\n", type, func, line, buf); 153 #endif 154 } 155 156 #ifdef NSP_DEBUG 157 static void nsp_cs_dmessage(const char *func, int line, int mask, char *fmt, ...) 158 { 159 va_list args; 160 char buf[NSP_DEBUG_BUF_LEN]; 161 162 va_start(args, fmt); 163 vsnprintf(buf, sizeof(buf), fmt, args); 164 va_end(args); 165 166 if (mask & NSP_DEBUG_MASK) { 167 printk("nsp_cs-debug: 0x%x %s (%d): %s\n", mask, func, line, buf); 168 } 169 } 170 #endif 171 172 /***********************************************************/ 173 174 /*==================================================== 175 * Clenaup parameters and call done() functions. 176 * You must be set SCpnt->result before call this function. 177 */ 178 static void nsp_scsi_done(struct scsi_cmnd *SCpnt) 179 { 180 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 181 182 data->CurrentSC = NULL; 183 184 SCpnt->scsi_done(SCpnt); 185 } 186 187 static int nsp_queuecommand_lck(struct scsi_cmnd *SCpnt, 188 void (*done)(struct scsi_cmnd *)) 189 { 190 #ifdef NSP_DEBUG 191 /*unsigned int host_id = SCpnt->device->host->this_id;*/ 192 /*unsigned int base = SCpnt->device->host->io_port;*/ 193 unsigned char target = scmd_id(SCpnt); 194 #endif 195 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 196 197 nsp_dbg(NSP_DEBUG_QUEUECOMMAND, 198 "SCpnt=0x%p target=%d lun=%d sglist=0x%p bufflen=%d sg_count=%d", 199 SCpnt, target, SCpnt->device->lun, scsi_sglist(SCpnt), 200 scsi_bufflen(SCpnt), scsi_sg_count(SCpnt)); 201 //nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "before CurrentSC=0x%p", data->CurrentSC); 202 203 SCpnt->scsi_done = done; 204 205 if (data->CurrentSC != NULL) { 206 nsp_msg(KERN_DEBUG, "CurrentSC!=NULL this can't be happen"); 207 SCpnt->result = DID_BAD_TARGET << 16; 208 nsp_scsi_done(SCpnt); 209 return 0; 210 } 211 212 #if 0 213 /* XXX: pcmcia-cs generates SCSI command with "scsi_info" utility. 214 This makes kernel crash when suspending... */ 215 if (data->ScsiInfo->stop != 0) { 216 nsp_msg(KERN_INFO, "suspending device. reject command."); 217 SCpnt->result = DID_BAD_TARGET << 16; 218 nsp_scsi_done(SCpnt); 219 return SCSI_MLQUEUE_HOST_BUSY; 220 } 221 #endif 222 223 show_command(SCpnt); 224 225 data->CurrentSC = SCpnt; 226 227 SCpnt->SCp.Status = CHECK_CONDITION; 228 SCpnt->SCp.Message = 0; 229 SCpnt->SCp.have_data_in = IO_UNKNOWN; 230 SCpnt->SCp.sent_command = 0; 231 SCpnt->SCp.phase = PH_UNDETERMINED; 232 scsi_set_resid(SCpnt, scsi_bufflen(SCpnt)); 233 234 /* setup scratch area 235 SCp.ptr : buffer pointer 236 SCp.this_residual : buffer length 237 SCp.buffer : next buffer 238 SCp.buffers_residual : left buffers in list 239 SCp.phase : current state of the command */ 240 if (scsi_bufflen(SCpnt)) { 241 SCpnt->SCp.buffer = scsi_sglist(SCpnt); 242 SCpnt->SCp.ptr = BUFFER_ADDR; 243 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length; 244 SCpnt->SCp.buffers_residual = scsi_sg_count(SCpnt) - 1; 245 } else { 246 SCpnt->SCp.ptr = NULL; 247 SCpnt->SCp.this_residual = 0; 248 SCpnt->SCp.buffer = NULL; 249 SCpnt->SCp.buffers_residual = 0; 250 } 251 252 if (nsphw_start_selection(SCpnt) == FALSE) { 253 nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "selection fail"); 254 SCpnt->result = DID_BUS_BUSY << 16; 255 nsp_scsi_done(SCpnt); 256 return 0; 257 } 258 259 260 //nsp_dbg(NSP_DEBUG_QUEUECOMMAND, "out"); 261 #ifdef NSP_DEBUG 262 data->CmdId++; 263 #endif 264 return 0; 265 } 266 267 static DEF_SCSI_QCMD(nsp_queuecommand) 268 269 /* 270 * setup PIO FIFO transfer mode and enable/disable to data out 271 */ 272 static void nsp_setup_fifo(nsp_hw_data *data, int enabled) 273 { 274 unsigned int base = data->BaseAddress; 275 unsigned char transfer_mode_reg; 276 277 //nsp_dbg(NSP_DEBUG_DATA_IO, "enabled=%d", enabled); 278 279 if (enabled != FALSE) { 280 transfer_mode_reg = TRANSFER_GO | BRAIND; 281 } else { 282 transfer_mode_reg = 0; 283 } 284 285 transfer_mode_reg |= data->TransferMode; 286 287 nsp_index_write(base, TRANSFERMODE, transfer_mode_reg); 288 } 289 290 static void nsphw_init_sync(nsp_hw_data *data) 291 { 292 sync_data tmp_sync = { .SyncNegotiation = SYNC_NOT_YET, 293 .SyncPeriod = 0, 294 .SyncOffset = 0 295 }; 296 int i; 297 298 /* setup sync data */ 299 for ( i = 0; i < ARRAY_SIZE(data->Sync); i++ ) { 300 data->Sync[i] = tmp_sync; 301 } 302 } 303 304 /* 305 * Initialize Ninja hardware 306 */ 307 static int nsphw_init(nsp_hw_data *data) 308 { 309 unsigned int base = data->BaseAddress; 310 311 nsp_dbg(NSP_DEBUG_INIT, "in base=0x%x", base); 312 313 data->ScsiClockDiv = CLOCK_40M | FAST_20; 314 data->CurrentSC = NULL; 315 data->FifoCount = 0; 316 data->TransferMode = MODE_IO8; 317 318 nsphw_init_sync(data); 319 320 /* block all interrupts */ 321 nsp_write(base, IRQCONTROL, IRQCONTROL_ALLMASK); 322 323 /* setup SCSI interface */ 324 nsp_write(base, IFSELECT, IF_IFSEL); 325 326 nsp_index_write(base, SCSIIRQMODE, 0); 327 328 nsp_index_write(base, TRANSFERMODE, MODE_IO8); 329 nsp_index_write(base, CLOCKDIV, data->ScsiClockDiv); 330 331 nsp_index_write(base, PARITYCTRL, 0); 332 nsp_index_write(base, POINTERCLR, POINTER_CLEAR | 333 ACK_COUNTER_CLEAR | 334 REQ_COUNTER_CLEAR | 335 HOST_COUNTER_CLEAR); 336 337 /* setup fifo asic */ 338 nsp_write(base, IFSELECT, IF_REGSEL); 339 nsp_index_write(base, TERMPWRCTRL, 0); 340 if ((nsp_index_read(base, OTHERCONTROL) & TPWR_SENSE) == 0) { 341 nsp_msg(KERN_INFO, "terminator power on"); 342 nsp_index_write(base, TERMPWRCTRL, POWER_ON); 343 } 344 345 nsp_index_write(base, TIMERCOUNT, 0); 346 nsp_index_write(base, TIMERCOUNT, 0); /* requires 2 times!! */ 347 348 nsp_index_write(base, SYNCREG, 0); 349 nsp_index_write(base, ACKWIDTH, 0); 350 351 /* enable interrupts and ack them */ 352 nsp_index_write(base, SCSIIRQMODE, SCSI_PHASE_CHANGE_EI | 353 RESELECT_EI | 354 SCSI_RESET_IRQ_EI ); 355 nsp_write(base, IRQCONTROL, IRQCONTROL_ALLCLEAR); 356 357 nsp_setup_fifo(data, FALSE); 358 359 return TRUE; 360 } 361 362 /* 363 * Start selection phase 364 */ 365 static int nsphw_start_selection(struct scsi_cmnd *SCpnt) 366 { 367 unsigned int host_id = SCpnt->device->host->this_id; 368 unsigned int base = SCpnt->device->host->io_port; 369 unsigned char target = scmd_id(SCpnt); 370 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 371 int time_out; 372 unsigned char phase, arbit; 373 374 //nsp_dbg(NSP_DEBUG_RESELECTION, "in"); 375 376 phase = nsp_index_read(base, SCSIBUSMON); 377 if(phase != BUSMON_BUS_FREE) { 378 //nsp_dbg(NSP_DEBUG_RESELECTION, "bus busy"); 379 return FALSE; 380 } 381 382 /* start arbitration */ 383 //nsp_dbg(NSP_DEBUG_RESELECTION, "start arbit"); 384 SCpnt->SCp.phase = PH_ARBSTART; 385 nsp_index_write(base, SETARBIT, ARBIT_GO); 386 387 time_out = 1000; 388 do { 389 /* XXX: what a stupid chip! */ 390 arbit = nsp_index_read(base, ARBITSTATUS); 391 //nsp_dbg(NSP_DEBUG_RESELECTION, "arbit=%d, wait_count=%d", arbit, wait_count); 392 udelay(1); /* hold 1.2us */ 393 } while((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 && 394 (time_out-- != 0)); 395 396 if (!(arbit & ARBIT_WIN)) { 397 //nsp_dbg(NSP_DEBUG_RESELECTION, "arbit fail"); 398 nsp_index_write(base, SETARBIT, ARBIT_FLAG_CLEAR); 399 return FALSE; 400 } 401 402 /* assert select line */ 403 //nsp_dbg(NSP_DEBUG_RESELECTION, "assert SEL line"); 404 SCpnt->SCp.phase = PH_SELSTART; 405 udelay(3); /* wait 2.4us */ 406 nsp_index_write(base, SCSIDATALATCH, BIT(host_id) | BIT(target)); 407 nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_BSY | SCSI_ATN); 408 udelay(2); /* wait >1.2us */ 409 nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_BSY | SCSI_DATAOUT_ENB | SCSI_ATN); 410 nsp_index_write(base, SETARBIT, ARBIT_FLAG_CLEAR); 411 /*udelay(1);*/ /* wait >90ns */ 412 nsp_index_write(base, SCSIBUSCTRL, SCSI_SEL | SCSI_DATAOUT_ENB | SCSI_ATN); 413 414 /* check selection timeout */ 415 nsp_start_timer(SCpnt, 1000/51); 416 data->SelectionTimeOut = 1; 417 418 return TRUE; 419 } 420 421 struct nsp_sync_table { 422 unsigned int min_period; 423 unsigned int max_period; 424 unsigned int chip_period; 425 unsigned int ack_width; 426 }; 427 428 static struct nsp_sync_table nsp_sync_table_40M[] = { 429 {0x0c, 0x0c, 0x1, 0}, /* 20MB 50ns*/ 430 {0x19, 0x19, 0x3, 1}, /* 10MB 100ns*/ 431 {0x1a, 0x25, 0x5, 2}, /* 7.5MB 150ns*/ 432 {0x26, 0x32, 0x7, 3}, /* 5MB 200ns*/ 433 { 0, 0, 0, 0}, 434 }; 435 436 static struct nsp_sync_table nsp_sync_table_20M[] = { 437 {0x19, 0x19, 0x1, 0}, /* 10MB 100ns*/ 438 {0x1a, 0x25, 0x2, 0}, /* 7.5MB 150ns*/ 439 {0x26, 0x32, 0x3, 1}, /* 5MB 200ns*/ 440 { 0, 0, 0, 0}, 441 }; 442 443 /* 444 * setup synchronous data transfer mode 445 */ 446 static int nsp_analyze_sdtr(struct scsi_cmnd *SCpnt) 447 { 448 unsigned char target = scmd_id(SCpnt); 449 // unsigned char lun = SCpnt->device->lun; 450 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 451 sync_data *sync = &(data->Sync[target]); 452 struct nsp_sync_table *sync_table; 453 unsigned int period, offset; 454 int i; 455 456 457 nsp_dbg(NSP_DEBUG_SYNC, "in"); 458 459 period = sync->SyncPeriod; 460 offset = sync->SyncOffset; 461 462 nsp_dbg(NSP_DEBUG_SYNC, "period=0x%x, offset=0x%x", period, offset); 463 464 if ((data->ScsiClockDiv & (BIT(0)|BIT(1))) == CLOCK_20M) { 465 sync_table = nsp_sync_table_20M; 466 } else { 467 sync_table = nsp_sync_table_40M; 468 } 469 470 for ( i = 0; sync_table->max_period != 0; i++, sync_table++) { 471 if ( period >= sync_table->min_period && 472 period <= sync_table->max_period ) { 473 break; 474 } 475 } 476 477 if (period != 0 && sync_table->max_period == 0) { 478 /* 479 * No proper period/offset found 480 */ 481 nsp_dbg(NSP_DEBUG_SYNC, "no proper period/offset"); 482 483 sync->SyncPeriod = 0; 484 sync->SyncOffset = 0; 485 sync->SyncRegister = 0; 486 sync->AckWidth = 0; 487 488 return FALSE; 489 } 490 491 sync->SyncRegister = (sync_table->chip_period << SYNCREG_PERIOD_SHIFT) | 492 (offset & SYNCREG_OFFSET_MASK); 493 sync->AckWidth = sync_table->ack_width; 494 495 nsp_dbg(NSP_DEBUG_SYNC, "sync_reg=0x%x, ack_width=0x%x", sync->SyncRegister, sync->AckWidth); 496 497 return TRUE; 498 } 499 500 501 /* 502 * start ninja hardware timer 503 */ 504 static void nsp_start_timer(struct scsi_cmnd *SCpnt, int time) 505 { 506 unsigned int base = SCpnt->device->host->io_port; 507 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 508 509 //nsp_dbg(NSP_DEBUG_INTR, "in SCpnt=0x%p, time=%d", SCpnt, time); 510 data->TimerCount = time; 511 nsp_index_write(base, TIMERCOUNT, time); 512 } 513 514 /* 515 * wait for bus phase change 516 */ 517 static int nsp_negate_signal(struct scsi_cmnd *SCpnt, unsigned char mask, 518 char *str) 519 { 520 unsigned int base = SCpnt->device->host->io_port; 521 unsigned char reg; 522 int time_out; 523 524 //nsp_dbg(NSP_DEBUG_INTR, "in"); 525 526 time_out = 100; 527 528 do { 529 reg = nsp_index_read(base, SCSIBUSMON); 530 if (reg == 0xff) { 531 break; 532 } 533 } while ((--time_out != 0) && (reg & mask) != 0); 534 535 if (time_out == 0) { 536 nsp_msg(KERN_DEBUG, " %s signal off timeut", str); 537 } 538 539 return 0; 540 } 541 542 /* 543 * expect Ninja Irq 544 */ 545 static int nsp_expect_signal(struct scsi_cmnd *SCpnt, 546 unsigned char current_phase, 547 unsigned char mask) 548 { 549 unsigned int base = SCpnt->device->host->io_port; 550 int time_out; 551 unsigned char phase, i_src; 552 553 //nsp_dbg(NSP_DEBUG_INTR, "current_phase=0x%x, mask=0x%x", current_phase, mask); 554 555 time_out = 100; 556 do { 557 phase = nsp_index_read(base, SCSIBUSMON); 558 if (phase == 0xff) { 559 //nsp_dbg(NSP_DEBUG_INTR, "ret -1"); 560 return -1; 561 } 562 i_src = nsp_read(base, IRQSTATUS); 563 if (i_src & IRQSTATUS_SCSI) { 564 //nsp_dbg(NSP_DEBUG_INTR, "ret 0 found scsi signal"); 565 return 0; 566 } 567 if ((phase & mask) != 0 && (phase & BUSMON_PHASE_MASK) == current_phase) { 568 //nsp_dbg(NSP_DEBUG_INTR, "ret 1 phase=0x%x", phase); 569 return 1; 570 } 571 } while(time_out-- != 0); 572 573 //nsp_dbg(NSP_DEBUG_INTR, "timeout"); 574 return -1; 575 } 576 577 /* 578 * transfer SCSI message 579 */ 580 static int nsp_xfer(struct scsi_cmnd *SCpnt, int phase) 581 { 582 unsigned int base = SCpnt->device->host->io_port; 583 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 584 char *buf = data->MsgBuffer; 585 int len = min(MSGBUF_SIZE, data->MsgLen); 586 int ptr; 587 int ret; 588 589 //nsp_dbg(NSP_DEBUG_DATA_IO, "in"); 590 for (ptr = 0; len > 0; len--, ptr++) { 591 592 ret = nsp_expect_signal(SCpnt, phase, BUSMON_REQ); 593 if (ret <= 0) { 594 nsp_dbg(NSP_DEBUG_DATA_IO, "xfer quit"); 595 return 0; 596 } 597 598 /* if last byte, negate ATN */ 599 if (len == 1 && SCpnt->SCp.phase == PH_MSG_OUT) { 600 nsp_index_write(base, SCSIBUSCTRL, AUTODIRECTION | ACKENB); 601 } 602 603 /* read & write message */ 604 if (phase & BUSMON_IO) { 605 nsp_dbg(NSP_DEBUG_DATA_IO, "read msg"); 606 buf[ptr] = nsp_index_read(base, SCSIDATAWITHACK); 607 } else { 608 nsp_dbg(NSP_DEBUG_DATA_IO, "write msg"); 609 nsp_index_write(base, SCSIDATAWITHACK, buf[ptr]); 610 } 611 nsp_negate_signal(SCpnt, BUSMON_ACK, "xfer<ack>"); 612 613 } 614 return len; 615 } 616 617 /* 618 * get extra SCSI data from fifo 619 */ 620 static int nsp_dataphase_bypass(struct scsi_cmnd *SCpnt) 621 { 622 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 623 unsigned int count; 624 625 //nsp_dbg(NSP_DEBUG_DATA_IO, "in"); 626 627 if (SCpnt->SCp.have_data_in != IO_IN) { 628 return 0; 629 } 630 631 count = nsp_fifo_count(SCpnt); 632 if (data->FifoCount == count) { 633 //nsp_dbg(NSP_DEBUG_DATA_IO, "not use bypass quirk"); 634 return 0; 635 } 636 637 /* 638 * XXX: NSP_QUIRK 639 * data phase skip only occures in case of SCSI_LOW_READ 640 */ 641 nsp_dbg(NSP_DEBUG_DATA_IO, "use bypass quirk"); 642 SCpnt->SCp.phase = PH_DATA; 643 nsp_pio_read(SCpnt); 644 nsp_setup_fifo(data, FALSE); 645 646 return 0; 647 } 648 649 /* 650 * accept reselection 651 */ 652 static int nsp_reselected(struct scsi_cmnd *SCpnt) 653 { 654 unsigned int base = SCpnt->device->host->io_port; 655 unsigned int host_id = SCpnt->device->host->this_id; 656 //nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 657 unsigned char bus_reg; 658 unsigned char id_reg, tmp; 659 int target; 660 661 nsp_dbg(NSP_DEBUG_RESELECTION, "in"); 662 663 id_reg = nsp_index_read(base, RESELECTID); 664 tmp = id_reg & (~BIT(host_id)); 665 target = 0; 666 while(tmp != 0) { 667 if (tmp & BIT(0)) { 668 break; 669 } 670 tmp >>= 1; 671 target++; 672 } 673 674 if (scmd_id(SCpnt) != target) { 675 nsp_msg(KERN_ERR, "XXX: reselect ID must be %d in this implementation.", target); 676 } 677 678 nsp_negate_signal(SCpnt, BUSMON_SEL, "reselect<SEL>"); 679 680 nsp_nexus(SCpnt); 681 bus_reg = nsp_index_read(base, SCSIBUSCTRL) & ~(SCSI_BSY | SCSI_ATN); 682 nsp_index_write(base, SCSIBUSCTRL, bus_reg); 683 nsp_index_write(base, SCSIBUSCTRL, bus_reg | AUTODIRECTION | ACKENB); 684 685 return TRUE; 686 } 687 688 /* 689 * count how many data transferd 690 */ 691 static int nsp_fifo_count(struct scsi_cmnd *SCpnt) 692 { 693 unsigned int base = SCpnt->device->host->io_port; 694 unsigned int count; 695 unsigned int l, m, h, dummy; 696 697 nsp_index_write(base, POINTERCLR, POINTER_CLEAR | ACK_COUNTER); 698 699 l = nsp_index_read(base, TRANSFERCOUNT); 700 m = nsp_index_read(base, TRANSFERCOUNT); 701 h = nsp_index_read(base, TRANSFERCOUNT); 702 dummy = nsp_index_read(base, TRANSFERCOUNT); /* required this! */ 703 704 count = (h << 16) | (m << 8) | (l << 0); 705 706 //nsp_dbg(NSP_DEBUG_DATA_IO, "count=0x%x", count); 707 708 return count; 709 } 710 711 /* fifo size */ 712 #define RFIFO_CRIT 64 713 #define WFIFO_CRIT 64 714 715 /* 716 * read data in DATA IN phase 717 */ 718 static void nsp_pio_read(struct scsi_cmnd *SCpnt) 719 { 720 unsigned int base = SCpnt->device->host->io_port; 721 unsigned long mmio_base = SCpnt->device->host->base; 722 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 723 long time_out; 724 int ocount, res; 725 unsigned char stat, fifo_stat; 726 727 ocount = data->FifoCount; 728 729 nsp_dbg(NSP_DEBUG_DATA_IO, "in SCpnt=0x%p resid=%d ocount=%d ptr=0x%p this_residual=%d buffers=0x%p nbuf=%d", 730 SCpnt, scsi_get_resid(SCpnt), ocount, SCpnt->SCp.ptr, 731 SCpnt->SCp.this_residual, SCpnt->SCp.buffer, 732 SCpnt->SCp.buffers_residual); 733 734 time_out = 1000; 735 736 while ((time_out-- != 0) && 737 (SCpnt->SCp.this_residual > 0 || SCpnt->SCp.buffers_residual > 0 ) ) { 738 739 stat = nsp_index_read(base, SCSIBUSMON); 740 stat &= BUSMON_PHASE_MASK; 741 742 743 res = nsp_fifo_count(SCpnt) - ocount; 744 //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this=0x%x ocount=0x%x res=0x%x", SCpnt->SCp.ptr, SCpnt->SCp.this_residual, ocount, res); 745 if (res == 0) { /* if some data available ? */ 746 if (stat == BUSPHASE_DATA_IN) { /* phase changed? */ 747 //nsp_dbg(NSP_DEBUG_DATA_IO, " wait for data this=%d", SCpnt->SCp.this_residual); 748 continue; 749 } else { 750 nsp_dbg(NSP_DEBUG_DATA_IO, "phase changed stat=0x%x", stat); 751 break; 752 } 753 } 754 755 fifo_stat = nsp_read(base, FIFOSTATUS); 756 if ((fifo_stat & FIFOSTATUS_FULL_EMPTY) == 0 && 757 stat == BUSPHASE_DATA_IN) { 758 continue; 759 } 760 761 res = min(res, SCpnt->SCp.this_residual); 762 763 switch (data->TransferMode) { 764 case MODE_IO32: 765 res &= ~(BIT(1)|BIT(0)); /* align 4 */ 766 nsp_fifo32_read(base, SCpnt->SCp.ptr, res >> 2); 767 break; 768 case MODE_IO8: 769 nsp_fifo8_read (base, SCpnt->SCp.ptr, res ); 770 break; 771 772 case MODE_MEM32: 773 res &= ~(BIT(1)|BIT(0)); /* align 4 */ 774 nsp_mmio_fifo32_read(mmio_base, SCpnt->SCp.ptr, res >> 2); 775 break; 776 777 default: 778 nsp_dbg(NSP_DEBUG_DATA_IO, "unknown read mode"); 779 return; 780 } 781 782 nsp_inc_resid(SCpnt, -res); 783 SCpnt->SCp.ptr += res; 784 SCpnt->SCp.this_residual -= res; 785 ocount += res; 786 //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this_residual=0x%x ocount=0x%x", SCpnt->SCp.ptr, SCpnt->SCp.this_residual, ocount); 787 788 /* go to next scatter list if available */ 789 if (SCpnt->SCp.this_residual == 0 && 790 SCpnt->SCp.buffers_residual != 0 ) { 791 //nsp_dbg(NSP_DEBUG_DATA_IO, "scatterlist next timeout=%d", time_out); 792 SCpnt->SCp.buffers_residual--; 793 SCpnt->SCp.buffer++; 794 SCpnt->SCp.ptr = BUFFER_ADDR; 795 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length; 796 time_out = 1000; 797 798 //nsp_dbg(NSP_DEBUG_DATA_IO, "page: 0x%p, off: 0x%x", SCpnt->SCp.buffer->page, SCpnt->SCp.buffer->offset); 799 } 800 } 801 802 data->FifoCount = ocount; 803 804 if (time_out < 0) { 805 nsp_msg(KERN_DEBUG, "pio read timeout resid=%d this_residual=%d buffers_residual=%d", 806 scsi_get_resid(SCpnt), SCpnt->SCp.this_residual, 807 SCpnt->SCp.buffers_residual); 808 } 809 nsp_dbg(NSP_DEBUG_DATA_IO, "read ocount=0x%x", ocount); 810 nsp_dbg(NSP_DEBUG_DATA_IO, "r cmd=%d resid=0x%x\n", data->CmdId, 811 scsi_get_resid(SCpnt)); 812 } 813 814 /* 815 * write data in DATA OUT phase 816 */ 817 static void nsp_pio_write(struct scsi_cmnd *SCpnt) 818 { 819 unsigned int base = SCpnt->device->host->io_port; 820 unsigned long mmio_base = SCpnt->device->host->base; 821 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 822 int time_out; 823 int ocount, res; 824 unsigned char stat; 825 826 ocount = data->FifoCount; 827 828 nsp_dbg(NSP_DEBUG_DATA_IO, "in fifocount=%d ptr=0x%p this_residual=%d buffers=0x%p nbuf=%d resid=0x%x", 829 data->FifoCount, SCpnt->SCp.ptr, SCpnt->SCp.this_residual, 830 SCpnt->SCp.buffer, SCpnt->SCp.buffers_residual, 831 scsi_get_resid(SCpnt)); 832 833 time_out = 1000; 834 835 while ((time_out-- != 0) && 836 (SCpnt->SCp.this_residual > 0 || SCpnt->SCp.buffers_residual > 0)) { 837 stat = nsp_index_read(base, SCSIBUSMON); 838 stat &= BUSMON_PHASE_MASK; 839 840 if (stat != BUSPHASE_DATA_OUT) { 841 res = ocount - nsp_fifo_count(SCpnt); 842 843 nsp_dbg(NSP_DEBUG_DATA_IO, "phase changed stat=0x%x, res=%d\n", stat, res); 844 /* Put back pointer */ 845 nsp_inc_resid(SCpnt, res); 846 SCpnt->SCp.ptr -= res; 847 SCpnt->SCp.this_residual += res; 848 ocount -= res; 849 850 break; 851 } 852 853 res = ocount - nsp_fifo_count(SCpnt); 854 if (res > 0) { /* write all data? */ 855 nsp_dbg(NSP_DEBUG_DATA_IO, "wait for all data out. ocount=0x%x res=%d", ocount, res); 856 continue; 857 } 858 859 res = min(SCpnt->SCp.this_residual, WFIFO_CRIT); 860 861 //nsp_dbg(NSP_DEBUG_DATA_IO, "ptr=0x%p this=0x%x res=0x%x", SCpnt->SCp.ptr, SCpnt->SCp.this_residual, res); 862 switch (data->TransferMode) { 863 case MODE_IO32: 864 res &= ~(BIT(1)|BIT(0)); /* align 4 */ 865 nsp_fifo32_write(base, SCpnt->SCp.ptr, res >> 2); 866 break; 867 case MODE_IO8: 868 nsp_fifo8_write (base, SCpnt->SCp.ptr, res ); 869 break; 870 871 case MODE_MEM32: 872 res &= ~(BIT(1)|BIT(0)); /* align 4 */ 873 nsp_mmio_fifo32_write(mmio_base, SCpnt->SCp.ptr, res >> 2); 874 break; 875 876 default: 877 nsp_dbg(NSP_DEBUG_DATA_IO, "unknown write mode"); 878 break; 879 } 880 881 nsp_inc_resid(SCpnt, -res); 882 SCpnt->SCp.ptr += res; 883 SCpnt->SCp.this_residual -= res; 884 ocount += res; 885 886 /* go to next scatter list if available */ 887 if (SCpnt->SCp.this_residual == 0 && 888 SCpnt->SCp.buffers_residual != 0 ) { 889 //nsp_dbg(NSP_DEBUG_DATA_IO, "scatterlist next"); 890 SCpnt->SCp.buffers_residual--; 891 SCpnt->SCp.buffer++; 892 SCpnt->SCp.ptr = BUFFER_ADDR; 893 SCpnt->SCp.this_residual = SCpnt->SCp.buffer->length; 894 time_out = 1000; 895 } 896 } 897 898 data->FifoCount = ocount; 899 900 if (time_out < 0) { 901 nsp_msg(KERN_DEBUG, "pio write timeout resid=0x%x", 902 scsi_get_resid(SCpnt)); 903 } 904 nsp_dbg(NSP_DEBUG_DATA_IO, "write ocount=0x%x", ocount); 905 nsp_dbg(NSP_DEBUG_DATA_IO, "w cmd=%d resid=0x%x\n", data->CmdId, 906 scsi_get_resid(SCpnt)); 907 } 908 #undef RFIFO_CRIT 909 #undef WFIFO_CRIT 910 911 /* 912 * setup synchronous/asynchronous data transfer mode 913 */ 914 static int nsp_nexus(struct scsi_cmnd *SCpnt) 915 { 916 unsigned int base = SCpnt->device->host->io_port; 917 unsigned char target = scmd_id(SCpnt); 918 // unsigned char lun = SCpnt->device->lun; 919 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 920 sync_data *sync = &(data->Sync[target]); 921 922 //nsp_dbg(NSP_DEBUG_DATA_IO, "in SCpnt=0x%p", SCpnt); 923 924 /* setup synch transfer registers */ 925 nsp_index_write(base, SYNCREG, sync->SyncRegister); 926 nsp_index_write(base, ACKWIDTH, sync->AckWidth); 927 928 if (scsi_get_resid(SCpnt) % 4 != 0 || 929 scsi_get_resid(SCpnt) <= PAGE_SIZE ) { 930 data->TransferMode = MODE_IO8; 931 } else if (nsp_burst_mode == BURST_MEM32) { 932 data->TransferMode = MODE_MEM32; 933 } else if (nsp_burst_mode == BURST_IO32) { 934 data->TransferMode = MODE_IO32; 935 } else { 936 data->TransferMode = MODE_IO8; 937 } 938 939 /* setup pdma fifo */ 940 nsp_setup_fifo(data, TRUE); 941 942 /* clear ack counter */ 943 data->FifoCount = 0; 944 nsp_index_write(base, POINTERCLR, POINTER_CLEAR | 945 ACK_COUNTER_CLEAR | 946 REQ_COUNTER_CLEAR | 947 HOST_COUNTER_CLEAR); 948 949 return 0; 950 } 951 952 #include "nsp_message.c" 953 /* 954 * interrupt handler 955 */ 956 static irqreturn_t nspintr(int irq, void *dev_id) 957 { 958 unsigned int base; 959 unsigned char irq_status, irq_phase, phase; 960 struct scsi_cmnd *tmpSC; 961 unsigned char target, lun; 962 unsigned int *sync_neg; 963 int i, tmp; 964 nsp_hw_data *data; 965 966 967 //nsp_dbg(NSP_DEBUG_INTR, "dev_id=0x%p", dev_id); 968 //nsp_dbg(NSP_DEBUG_INTR, "host=0x%p", ((scsi_info_t *)dev_id)->host); 969 970 if ( dev_id != NULL && 971 ((scsi_info_t *)dev_id)->host != NULL ) { 972 scsi_info_t *info = (scsi_info_t *)dev_id; 973 974 data = (nsp_hw_data *)info->host->hostdata; 975 } else { 976 nsp_dbg(NSP_DEBUG_INTR, "host data wrong"); 977 return IRQ_NONE; 978 } 979 980 //nsp_dbg(NSP_DEBUG_INTR, "&nsp_data_base=0x%p, dev_id=0x%p", &nsp_data_base, dev_id); 981 982 base = data->BaseAddress; 983 //nsp_dbg(NSP_DEBUG_INTR, "base=0x%x", base); 984 985 /* 986 * interrupt check 987 */ 988 nsp_write(base, IRQCONTROL, IRQCONTROL_IRQDISABLE); 989 irq_status = nsp_read(base, IRQSTATUS); 990 //nsp_dbg(NSP_DEBUG_INTR, "irq_status=0x%x", irq_status); 991 if ((irq_status == 0xff) || ((irq_status & IRQSTATUS_MASK) == 0)) { 992 nsp_write(base, IRQCONTROL, 0); 993 //nsp_dbg(NSP_DEBUG_INTR, "no irq/shared irq"); 994 return IRQ_NONE; 995 } 996 997 /* XXX: IMPORTANT 998 * Do not read an irq_phase register if no scsi phase interrupt. 999 * Unless, you should lose a scsi phase interrupt. 1000 */ 1001 phase = nsp_index_read(base, SCSIBUSMON); 1002 if((irq_status & IRQSTATUS_SCSI) != 0) { 1003 irq_phase = nsp_index_read(base, IRQPHASESENCE); 1004 } else { 1005 irq_phase = 0; 1006 } 1007 1008 //nsp_dbg(NSP_DEBUG_INTR, "irq_phase=0x%x", irq_phase); 1009 1010 /* 1011 * timer interrupt handler (scsi vs timer interrupts) 1012 */ 1013 //nsp_dbg(NSP_DEBUG_INTR, "timercount=%d", data->TimerCount); 1014 if (data->TimerCount != 0) { 1015 //nsp_dbg(NSP_DEBUG_INTR, "stop timer"); 1016 nsp_index_write(base, TIMERCOUNT, 0); 1017 nsp_index_write(base, TIMERCOUNT, 0); 1018 data->TimerCount = 0; 1019 } 1020 1021 if ((irq_status & IRQSTATUS_MASK) == IRQSTATUS_TIMER && 1022 data->SelectionTimeOut == 0) { 1023 //nsp_dbg(NSP_DEBUG_INTR, "timer start"); 1024 nsp_write(base, IRQCONTROL, IRQCONTROL_TIMER_CLEAR); 1025 return IRQ_HANDLED; 1026 } 1027 1028 nsp_write(base, IRQCONTROL, IRQCONTROL_TIMER_CLEAR | IRQCONTROL_FIFO_CLEAR); 1029 1030 if ((irq_status & IRQSTATUS_SCSI) && 1031 (irq_phase & SCSI_RESET_IRQ)) { 1032 nsp_msg(KERN_ERR, "bus reset (power off?)"); 1033 1034 nsphw_init(data); 1035 nsp_bus_reset(data); 1036 1037 if(data->CurrentSC != NULL) { 1038 tmpSC = data->CurrentSC; 1039 tmpSC->result = (DID_RESET << 16) | 1040 ((tmpSC->SCp.Message & 0xff) << 8) | 1041 ((tmpSC->SCp.Status & 0xff) << 0); 1042 nsp_scsi_done(tmpSC); 1043 } 1044 return IRQ_HANDLED; 1045 } 1046 1047 if (data->CurrentSC == NULL) { 1048 nsp_msg(KERN_ERR, "CurrentSC==NULL irq_status=0x%x phase=0x%x irq_phase=0x%x this can't be happen. reset everything", irq_status, phase, irq_phase); 1049 nsphw_init(data); 1050 nsp_bus_reset(data); 1051 return IRQ_HANDLED; 1052 } 1053 1054 tmpSC = data->CurrentSC; 1055 target = tmpSC->device->id; 1056 lun = tmpSC->device->lun; 1057 sync_neg = &(data->Sync[target].SyncNegotiation); 1058 1059 /* 1060 * parse hardware SCSI irq reasons register 1061 */ 1062 if (irq_status & IRQSTATUS_SCSI) { 1063 if (irq_phase & RESELECT_IRQ) { 1064 nsp_dbg(NSP_DEBUG_INTR, "reselect"); 1065 nsp_write(base, IRQCONTROL, IRQCONTROL_RESELECT_CLEAR); 1066 if (nsp_reselected(tmpSC) != FALSE) { 1067 return IRQ_HANDLED; 1068 } 1069 } 1070 1071 if ((irq_phase & (PHASE_CHANGE_IRQ | LATCHED_BUS_FREE)) == 0) { 1072 return IRQ_HANDLED; 1073 } 1074 } 1075 1076 //show_phase(tmpSC); 1077 1078 switch(tmpSC->SCp.phase) { 1079 case PH_SELSTART: 1080 // *sync_neg = SYNC_NOT_YET; 1081 if ((phase & BUSMON_BSY) == 0) { 1082 //nsp_dbg(NSP_DEBUG_INTR, "selection count=%d", data->SelectionTimeOut); 1083 if (data->SelectionTimeOut >= NSP_SELTIMEOUT) { 1084 nsp_dbg(NSP_DEBUG_INTR, "selection time out"); 1085 data->SelectionTimeOut = 0; 1086 nsp_index_write(base, SCSIBUSCTRL, 0); 1087 1088 tmpSC->result = DID_TIME_OUT << 16; 1089 nsp_scsi_done(tmpSC); 1090 1091 return IRQ_HANDLED; 1092 } 1093 data->SelectionTimeOut += 1; 1094 nsp_start_timer(tmpSC, 1000/51); 1095 return IRQ_HANDLED; 1096 } 1097 1098 /* attention assert */ 1099 //nsp_dbg(NSP_DEBUG_INTR, "attention assert"); 1100 data->SelectionTimeOut = 0; 1101 tmpSC->SCp.phase = PH_SELECTED; 1102 nsp_index_write(base, SCSIBUSCTRL, SCSI_ATN); 1103 udelay(1); 1104 nsp_index_write(base, SCSIBUSCTRL, SCSI_ATN | AUTODIRECTION | ACKENB); 1105 return IRQ_HANDLED; 1106 1107 break; 1108 1109 case PH_RESELECT: 1110 //nsp_dbg(NSP_DEBUG_INTR, "phase reselect"); 1111 // *sync_neg = SYNC_NOT_YET; 1112 if ((phase & BUSMON_PHASE_MASK) != BUSPHASE_MESSAGE_IN) { 1113 1114 tmpSC->result = DID_ABORT << 16; 1115 nsp_scsi_done(tmpSC); 1116 return IRQ_HANDLED; 1117 } 1118 /* fall thru */ 1119 default: 1120 if ((irq_status & (IRQSTATUS_SCSI | IRQSTATUS_FIFO)) == 0) { 1121 return IRQ_HANDLED; 1122 } 1123 break; 1124 } 1125 1126 /* 1127 * SCSI sequencer 1128 */ 1129 //nsp_dbg(NSP_DEBUG_INTR, "start scsi seq"); 1130 1131 /* normal disconnect */ 1132 if (((tmpSC->SCp.phase == PH_MSG_IN) || (tmpSC->SCp.phase == PH_MSG_OUT)) && 1133 (irq_phase & LATCHED_BUS_FREE) != 0 ) { 1134 nsp_dbg(NSP_DEBUG_INTR, "normal disconnect irq_status=0x%x, phase=0x%x, irq_phase=0x%x", irq_status, phase, irq_phase); 1135 1136 //*sync_neg = SYNC_NOT_YET; 1137 1138 if ((tmpSC->SCp.Message == MSG_COMMAND_COMPLETE)) { /* all command complete and return status */ 1139 tmpSC->result = (DID_OK << 16) | 1140 ((tmpSC->SCp.Message & 0xff) << 8) | 1141 ((tmpSC->SCp.Status & 0xff) << 0); 1142 nsp_dbg(NSP_DEBUG_INTR, "command complete result=0x%x", tmpSC->result); 1143 nsp_scsi_done(tmpSC); 1144 1145 return IRQ_HANDLED; 1146 } 1147 1148 return IRQ_HANDLED; 1149 } 1150 1151 1152 /* check unexpected bus free state */ 1153 if (phase == 0) { 1154 nsp_msg(KERN_DEBUG, "unexpected bus free. irq_status=0x%x, phase=0x%x, irq_phase=0x%x", irq_status, phase, irq_phase); 1155 1156 *sync_neg = SYNC_NG; 1157 tmpSC->result = DID_ERROR << 16; 1158 nsp_scsi_done(tmpSC); 1159 return IRQ_HANDLED; 1160 } 1161 1162 switch (phase & BUSMON_PHASE_MASK) { 1163 case BUSPHASE_COMMAND: 1164 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_COMMAND"); 1165 if ((phase & BUSMON_REQ) == 0) { 1166 nsp_dbg(NSP_DEBUG_INTR, "REQ == 0"); 1167 return IRQ_HANDLED; 1168 } 1169 1170 tmpSC->SCp.phase = PH_COMMAND; 1171 1172 nsp_nexus(tmpSC); 1173 1174 /* write scsi command */ 1175 nsp_dbg(NSP_DEBUG_INTR, "cmd_len=%d", tmpSC->cmd_len); 1176 nsp_index_write(base, COMMANDCTRL, CLEAR_COMMAND_POINTER); 1177 for (i = 0; i < tmpSC->cmd_len; i++) { 1178 nsp_index_write(base, COMMANDDATA, tmpSC->cmnd[i]); 1179 } 1180 nsp_index_write(base, COMMANDCTRL, CLEAR_COMMAND_POINTER | AUTO_COMMAND_GO); 1181 break; 1182 1183 case BUSPHASE_DATA_OUT: 1184 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_DATA_OUT"); 1185 1186 tmpSC->SCp.phase = PH_DATA; 1187 tmpSC->SCp.have_data_in = IO_OUT; 1188 1189 nsp_pio_write(tmpSC); 1190 1191 break; 1192 1193 case BUSPHASE_DATA_IN: 1194 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_DATA_IN"); 1195 1196 tmpSC->SCp.phase = PH_DATA; 1197 tmpSC->SCp.have_data_in = IO_IN; 1198 1199 nsp_pio_read(tmpSC); 1200 1201 break; 1202 1203 case BUSPHASE_STATUS: 1204 nsp_dataphase_bypass(tmpSC); 1205 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_STATUS"); 1206 1207 tmpSC->SCp.phase = PH_STATUS; 1208 1209 tmpSC->SCp.Status = nsp_index_read(base, SCSIDATAWITHACK); 1210 nsp_dbg(NSP_DEBUG_INTR, "message=0x%x status=0x%x", tmpSC->SCp.Message, tmpSC->SCp.Status); 1211 1212 break; 1213 1214 case BUSPHASE_MESSAGE_OUT: 1215 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_MESSAGE_OUT"); 1216 if ((phase & BUSMON_REQ) == 0) { 1217 goto timer_out; 1218 } 1219 1220 tmpSC->SCp.phase = PH_MSG_OUT; 1221 1222 //*sync_neg = SYNC_NOT_YET; 1223 1224 data->MsgLen = i = 0; 1225 data->MsgBuffer[i] = IDENTIFY(TRUE, lun); i++; 1226 1227 if (*sync_neg == SYNC_NOT_YET) { 1228 data->Sync[target].SyncPeriod = 0; 1229 data->Sync[target].SyncOffset = 0; 1230 1231 /**/ 1232 data->MsgBuffer[i] = MSG_EXTENDED; i++; 1233 data->MsgBuffer[i] = 3; i++; 1234 data->MsgBuffer[i] = MSG_EXT_SDTR; i++; 1235 data->MsgBuffer[i] = 0x0c; i++; 1236 data->MsgBuffer[i] = 15; i++; 1237 /**/ 1238 } 1239 data->MsgLen = i; 1240 1241 nsp_analyze_sdtr(tmpSC); 1242 show_message(data); 1243 nsp_message_out(tmpSC); 1244 break; 1245 1246 case BUSPHASE_MESSAGE_IN: 1247 nsp_dataphase_bypass(tmpSC); 1248 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE_MESSAGE_IN"); 1249 if ((phase & BUSMON_REQ) == 0) { 1250 goto timer_out; 1251 } 1252 1253 tmpSC->SCp.phase = PH_MSG_IN; 1254 nsp_message_in(tmpSC); 1255 1256 /**/ 1257 if (*sync_neg == SYNC_NOT_YET) { 1258 //nsp_dbg(NSP_DEBUG_INTR, "sync target=%d,lun=%d",target,lun); 1259 1260 if (data->MsgLen >= 5 && 1261 data->MsgBuffer[0] == MSG_EXTENDED && 1262 data->MsgBuffer[1] == 3 && 1263 data->MsgBuffer[2] == MSG_EXT_SDTR ) { 1264 data->Sync[target].SyncPeriod = data->MsgBuffer[3]; 1265 data->Sync[target].SyncOffset = data->MsgBuffer[4]; 1266 //nsp_dbg(NSP_DEBUG_INTR, "sync ok, %d %d", data->MsgBuffer[3], data->MsgBuffer[4]); 1267 *sync_neg = SYNC_OK; 1268 } else { 1269 data->Sync[target].SyncPeriod = 0; 1270 data->Sync[target].SyncOffset = 0; 1271 *sync_neg = SYNC_NG; 1272 } 1273 nsp_analyze_sdtr(tmpSC); 1274 } 1275 /**/ 1276 1277 /* search last messeage byte */ 1278 tmp = -1; 1279 for (i = 0; i < data->MsgLen; i++) { 1280 tmp = data->MsgBuffer[i]; 1281 if (data->MsgBuffer[i] == MSG_EXTENDED) { 1282 i += (1 + data->MsgBuffer[i+1]); 1283 } 1284 } 1285 tmpSC->SCp.Message = tmp; 1286 1287 nsp_dbg(NSP_DEBUG_INTR, "message=0x%x len=%d", tmpSC->SCp.Message, data->MsgLen); 1288 show_message(data); 1289 1290 break; 1291 1292 case BUSPHASE_SELECT: 1293 default: 1294 nsp_dbg(NSP_DEBUG_INTR, "BUSPHASE other"); 1295 1296 break; 1297 } 1298 1299 //nsp_dbg(NSP_DEBUG_INTR, "out"); 1300 return IRQ_HANDLED; 1301 1302 timer_out: 1303 nsp_start_timer(tmpSC, 1000/102); 1304 return IRQ_HANDLED; 1305 } 1306 1307 #ifdef NSP_DEBUG 1308 #include "nsp_debug.c" 1309 #endif /* NSP_DEBUG */ 1310 1311 /*----------------------------------------------------------------*/ 1312 /* look for ninja3 card and init if found */ 1313 /*----------------------------------------------------------------*/ 1314 static struct Scsi_Host *nsp_detect(struct scsi_host_template *sht) 1315 { 1316 struct Scsi_Host *host; /* registered host structure */ 1317 nsp_hw_data *data_b = &nsp_data_base, *data; 1318 1319 nsp_dbg(NSP_DEBUG_INIT, "this_id=%d", sht->this_id); 1320 host = scsi_host_alloc(&nsp_driver_template, sizeof(nsp_hw_data)); 1321 if (host == NULL) { 1322 nsp_dbg(NSP_DEBUG_INIT, "host failed"); 1323 return NULL; 1324 } 1325 1326 memcpy(host->hostdata, data_b, sizeof(nsp_hw_data)); 1327 data = (nsp_hw_data *)host->hostdata; 1328 data->ScsiInfo->host = host; 1329 #ifdef NSP_DEBUG 1330 data->CmdId = 0; 1331 #endif 1332 1333 nsp_dbg(NSP_DEBUG_INIT, "irq=%d,%d", data_b->IrqNumber, ((nsp_hw_data *)host->hostdata)->IrqNumber); 1334 1335 host->unique_id = data->BaseAddress; 1336 host->io_port = data->BaseAddress; 1337 host->n_io_port = data->NumAddress; 1338 host->irq = data->IrqNumber; 1339 host->base = data->MmioAddress; 1340 1341 spin_lock_init(&(data->Lock)); 1342 1343 snprintf(data->nspinfo, 1344 sizeof(data->nspinfo), 1345 "NinjaSCSI-3/32Bi Driver $Revision: 1.23 $ IO:0x%04lx-0x%04lx MMIO(virt addr):0x%04lx IRQ:%02d", 1346 host->io_port, host->io_port + host->n_io_port - 1, 1347 host->base, 1348 host->irq); 1349 sht->name = data->nspinfo; 1350 1351 nsp_dbg(NSP_DEBUG_INIT, "end"); 1352 1353 1354 return host; /* detect done. */ 1355 } 1356 1357 /*----------------------------------------------------------------*/ 1358 /* return info string */ 1359 /*----------------------------------------------------------------*/ 1360 static const char *nsp_info(struct Scsi_Host *shpnt) 1361 { 1362 nsp_hw_data *data = (nsp_hw_data *)shpnt->hostdata; 1363 1364 return data->nspinfo; 1365 } 1366 1367 #undef SPRINTF 1368 #define SPRINTF(args...) \ 1369 do { \ 1370 if(length > (pos - buffer)) { \ 1371 pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \ 1372 nsp_dbg(NSP_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length, length - (pos - buffer));\ 1373 } \ 1374 } while(0) 1375 1376 static int nsp_proc_info(struct Scsi_Host *host, char *buffer, char **start, 1377 off_t offset, int length, int inout) 1378 { 1379 int id; 1380 char *pos = buffer; 1381 int thislength; 1382 int speed; 1383 unsigned long flags; 1384 nsp_hw_data *data; 1385 int hostno; 1386 1387 if (inout) { 1388 return -EINVAL; 1389 } 1390 1391 hostno = host->host_no; 1392 data = (nsp_hw_data *)host->hostdata; 1393 1394 1395 SPRINTF("NinjaSCSI status\n\n"); 1396 SPRINTF("Driver version: $Revision: 1.23 $\n"); 1397 SPRINTF("SCSI host No.: %d\n", hostno); 1398 SPRINTF("IRQ: %d\n", host->irq); 1399 SPRINTF("IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1); 1400 SPRINTF("MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1); 1401 SPRINTF("sg_tablesize: %d\n", host->sg_tablesize); 1402 1403 SPRINTF("burst transfer mode: "); 1404 switch (nsp_burst_mode) { 1405 case BURST_IO8: 1406 SPRINTF("io8"); 1407 break; 1408 case BURST_IO32: 1409 SPRINTF("io32"); 1410 break; 1411 case BURST_MEM32: 1412 SPRINTF("mem32"); 1413 break; 1414 default: 1415 SPRINTF("???"); 1416 break; 1417 } 1418 SPRINTF("\n"); 1419 1420 1421 spin_lock_irqsave(&(data->Lock), flags); 1422 SPRINTF("CurrentSC: 0x%p\n\n", data->CurrentSC); 1423 spin_unlock_irqrestore(&(data->Lock), flags); 1424 1425 SPRINTF("SDTR status\n"); 1426 for(id = 0; id < ARRAY_SIZE(data->Sync); id++) { 1427 1428 SPRINTF("id %d: ", id); 1429 1430 if (id == host->this_id) { 1431 SPRINTF("----- NinjaSCSI-3 host adapter\n"); 1432 continue; 1433 } 1434 1435 switch(data->Sync[id].SyncNegotiation) { 1436 case SYNC_OK: 1437 SPRINTF(" sync"); 1438 break; 1439 case SYNC_NG: 1440 SPRINTF("async"); 1441 break; 1442 case SYNC_NOT_YET: 1443 SPRINTF(" none"); 1444 break; 1445 default: 1446 SPRINTF("?????"); 1447 break; 1448 } 1449 1450 if (data->Sync[id].SyncPeriod != 0) { 1451 speed = 1000000 / (data->Sync[id].SyncPeriod * 4); 1452 1453 SPRINTF(" transfer %d.%dMB/s, offset %d", 1454 speed / 1000, 1455 speed % 1000, 1456 data->Sync[id].SyncOffset 1457 ); 1458 } 1459 SPRINTF("\n"); 1460 } 1461 1462 thislength = pos - (buffer + offset); 1463 1464 if(thislength < 0) { 1465 *start = NULL; 1466 return 0; 1467 } 1468 1469 1470 thislength = min(thislength, length); 1471 *start = buffer + offset; 1472 1473 return thislength; 1474 } 1475 #undef SPRINTF 1476 1477 /*---------------------------------------------------------------*/ 1478 /* error handler */ 1479 /*---------------------------------------------------------------*/ 1480 1481 /* 1482 static int nsp_eh_abort(struct scsi_cmnd *SCpnt) 1483 { 1484 nsp_dbg(NSP_DEBUG_BUSRESET, "SCpnt=0x%p", SCpnt); 1485 1486 return nsp_eh_bus_reset(SCpnt); 1487 }*/ 1488 1489 static int nsp_bus_reset(nsp_hw_data *data) 1490 { 1491 unsigned int base = data->BaseAddress; 1492 int i; 1493 1494 nsp_write(base, IRQCONTROL, IRQCONTROL_ALLMASK); 1495 1496 nsp_index_write(base, SCSIBUSCTRL, SCSI_RST); 1497 mdelay(100); /* 100ms */ 1498 nsp_index_write(base, SCSIBUSCTRL, 0); 1499 for(i = 0; i < 5; i++) { 1500 nsp_index_read(base, IRQPHASESENCE); /* dummy read */ 1501 } 1502 1503 nsphw_init_sync(data); 1504 1505 nsp_write(base, IRQCONTROL, IRQCONTROL_ALLCLEAR); 1506 1507 return SUCCESS; 1508 } 1509 1510 static int nsp_eh_bus_reset(struct scsi_cmnd *SCpnt) 1511 { 1512 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 1513 1514 nsp_dbg(NSP_DEBUG_BUSRESET, "SCpnt=0x%p", SCpnt); 1515 1516 return nsp_bus_reset(data); 1517 } 1518 1519 static int nsp_eh_host_reset(struct scsi_cmnd *SCpnt) 1520 { 1521 nsp_hw_data *data = (nsp_hw_data *)SCpnt->device->host->hostdata; 1522 1523 nsp_dbg(NSP_DEBUG_BUSRESET, "in"); 1524 1525 nsphw_init(data); 1526 1527 return SUCCESS; 1528 } 1529 1530 1531 /********************************************************************** 1532 PCMCIA functions 1533 **********************************************************************/ 1534 1535 static int nsp_cs_probe(struct pcmcia_device *link) 1536 { 1537 scsi_info_t *info; 1538 nsp_hw_data *data = &nsp_data_base; 1539 int ret; 1540 1541 nsp_dbg(NSP_DEBUG_INIT, "in"); 1542 1543 /* Create new SCSI device */ 1544 info = kzalloc(sizeof(*info), GFP_KERNEL); 1545 if (info == NULL) { return -ENOMEM; } 1546 info->p_dev = link; 1547 link->priv = info; 1548 data->ScsiInfo = info; 1549 1550 nsp_dbg(NSP_DEBUG_INIT, "info=0x%p", info); 1551 1552 ret = nsp_cs_config(link); 1553 1554 nsp_dbg(NSP_DEBUG_INIT, "link=0x%p", link); 1555 return ret; 1556 } /* nsp_cs_attach */ 1557 1558 1559 static void nsp_cs_detach(struct pcmcia_device *link) 1560 { 1561 nsp_dbg(NSP_DEBUG_INIT, "in, link=0x%p", link); 1562 1563 ((scsi_info_t *)link->priv)->stop = 1; 1564 nsp_cs_release(link); 1565 1566 kfree(link->priv); 1567 link->priv = NULL; 1568 } /* nsp_cs_detach */ 1569 1570 1571 static int nsp_cs_config_check(struct pcmcia_device *p_dev, void *priv_data) 1572 { 1573 nsp_hw_data *data = priv_data; 1574 1575 if (p_dev->config_index == 0) 1576 return -ENODEV; 1577 1578 /* This reserves IO space but doesn't actually enable it */ 1579 if (pcmcia_request_io(p_dev) != 0) 1580 goto next_entry; 1581 1582 if (resource_size(p_dev->resource[2])) { 1583 p_dev->resource[2]->flags |= (WIN_DATA_WIDTH_16 | 1584 WIN_MEMORY_TYPE_CM | 1585 WIN_ENABLE); 1586 if (p_dev->resource[2]->end < 0x1000) 1587 p_dev->resource[2]->end = 0x1000; 1588 if (pcmcia_request_window(p_dev, p_dev->resource[2], 0) != 0) 1589 goto next_entry; 1590 if (pcmcia_map_mem_page(p_dev, p_dev->resource[2], 1591 p_dev->card_addr) != 0) 1592 goto next_entry; 1593 1594 data->MmioAddress = (unsigned long) 1595 ioremap_nocache(p_dev->resource[2]->start, 1596 resource_size(p_dev->resource[2])); 1597 data->MmioLength = resource_size(p_dev->resource[2]); 1598 } 1599 /* If we got this far, we're cool! */ 1600 return 0; 1601 1602 next_entry: 1603 nsp_dbg(NSP_DEBUG_INIT, "next"); 1604 pcmcia_disable_device(p_dev); 1605 return -ENODEV; 1606 } 1607 1608 static int nsp_cs_config(struct pcmcia_device *link) 1609 { 1610 int ret; 1611 scsi_info_t *info = link->priv; 1612 struct Scsi_Host *host; 1613 nsp_hw_data *data = &nsp_data_base; 1614 1615 nsp_dbg(NSP_DEBUG_INIT, "in"); 1616 1617 link->config_flags |= CONF_ENABLE_IRQ | CONF_AUTO_CHECK_VCC | 1618 CONF_AUTO_SET_VPP | CONF_AUTO_AUDIO | CONF_AUTO_SET_IOMEM | 1619 CONF_AUTO_SET_IO; 1620 1621 ret = pcmcia_loop_config(link, nsp_cs_config_check, data); 1622 if (ret) 1623 goto cs_failed; 1624 1625 if (pcmcia_request_irq(link, nspintr)) 1626 goto cs_failed; 1627 1628 ret = pcmcia_enable_device(link); 1629 if (ret) 1630 goto cs_failed; 1631 1632 if (free_ports) { 1633 if (link->resource[0]) { 1634 release_region(link->resource[0]->start, 1635 resource_size(link->resource[0])); 1636 } 1637 if (link->resource[1]) { 1638 release_region(link->resource[1]->start, 1639 resource_size(link->resource[1])); 1640 } 1641 } 1642 1643 /* Set port and IRQ */ 1644 data->BaseAddress = link->resource[0]->start; 1645 data->NumAddress = resource_size(link->resource[0]); 1646 data->IrqNumber = link->irq; 1647 1648 nsp_dbg(NSP_DEBUG_INIT, "I/O[0x%x+0x%x] IRQ %d", 1649 data->BaseAddress, data->NumAddress, data->IrqNumber); 1650 1651 if(nsphw_init(data) == FALSE) { 1652 goto cs_failed; 1653 } 1654 1655 host = nsp_detect(&nsp_driver_template); 1656 1657 if (host == NULL) { 1658 nsp_dbg(NSP_DEBUG_INIT, "detect failed"); 1659 goto cs_failed; 1660 } 1661 1662 1663 ret = scsi_add_host (host, NULL); 1664 if (ret) 1665 goto cs_failed; 1666 1667 scsi_scan_host(host); 1668 1669 info->host = host; 1670 1671 return 0; 1672 1673 cs_failed: 1674 nsp_dbg(NSP_DEBUG_INIT, "config fail"); 1675 nsp_cs_release(link); 1676 1677 return -ENODEV; 1678 } /* nsp_cs_config */ 1679 1680 1681 static void nsp_cs_release(struct pcmcia_device *link) 1682 { 1683 scsi_info_t *info = link->priv; 1684 nsp_hw_data *data = NULL; 1685 1686 if (info->host == NULL) { 1687 nsp_msg(KERN_DEBUG, "unexpected card release call."); 1688 } else { 1689 data = (nsp_hw_data *)info->host->hostdata; 1690 } 1691 1692 nsp_dbg(NSP_DEBUG_INIT, "link=0x%p", link); 1693 1694 /* Unlink the device chain */ 1695 if (info->host != NULL) { 1696 scsi_remove_host(info->host); 1697 } 1698 1699 if (resource_size(link->resource[2])) { 1700 if (data != NULL) { 1701 iounmap((void *)(data->MmioAddress)); 1702 } 1703 } 1704 pcmcia_disable_device(link); 1705 1706 if (info->host != NULL) { 1707 scsi_host_put(info->host); 1708 } 1709 } /* nsp_cs_release */ 1710 1711 static int nsp_cs_suspend(struct pcmcia_device *link) 1712 { 1713 scsi_info_t *info = link->priv; 1714 nsp_hw_data *data; 1715 1716 nsp_dbg(NSP_DEBUG_INIT, "event: suspend"); 1717 1718 if (info->host != NULL) { 1719 nsp_msg(KERN_INFO, "clear SDTR status"); 1720 1721 data = (nsp_hw_data *)info->host->hostdata; 1722 1723 nsphw_init_sync(data); 1724 } 1725 1726 info->stop = 1; 1727 1728 return 0; 1729 } 1730 1731 static int nsp_cs_resume(struct pcmcia_device *link) 1732 { 1733 scsi_info_t *info = link->priv; 1734 nsp_hw_data *data; 1735 1736 nsp_dbg(NSP_DEBUG_INIT, "event: resume"); 1737 1738 info->stop = 0; 1739 1740 if (info->host != NULL) { 1741 nsp_msg(KERN_INFO, "reset host and bus"); 1742 1743 data = (nsp_hw_data *)info->host->hostdata; 1744 1745 nsphw_init (data); 1746 nsp_bus_reset(data); 1747 } 1748 1749 return 0; 1750 } 1751 1752 /*======================================================================* 1753 * module entry point 1754 *====================================================================*/ 1755 static const struct pcmcia_device_id nsp_cs_ids[] = { 1756 PCMCIA_DEVICE_PROD_ID123("IO DATA", "CBSC16 ", "1", 0x547e66dc, 0x0d63a3fd, 0x51de003a), 1757 PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-001", "1", 0x534c02bc, 0x52008408, 0x51de003a), 1758 PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-002", "1", 0x534c02bc, 0xcb09d5b2, 0x51de003a), 1759 PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-003", "1", 0x534c02bc, 0xbc0ee524, 0x51de003a), 1760 PCMCIA_DEVICE_PROD_ID123("KME ", "SCSI-CARD-004", "1", 0x534c02bc, 0x226a7087, 0x51de003a), 1761 PCMCIA_DEVICE_PROD_ID123("WBT", "NinjaSCSI-3", "R1.0", 0xc7ba805f, 0xfdc7c97d, 0x6973710e), 1762 PCMCIA_DEVICE_PROD_ID123("WORKBIT", "UltraNinja-16", "1", 0x28191418, 0xb70f4b09, 0x51de003a), 1763 PCMCIA_DEVICE_NULL 1764 }; 1765 MODULE_DEVICE_TABLE(pcmcia, nsp_cs_ids); 1766 1767 static struct pcmcia_driver nsp_driver = { 1768 .owner = THIS_MODULE, 1769 .name = "nsp_cs", 1770 .probe = nsp_cs_probe, 1771 .remove = nsp_cs_detach, 1772 .id_table = nsp_cs_ids, 1773 .suspend = nsp_cs_suspend, 1774 .resume = nsp_cs_resume, 1775 }; 1776 1777 static int __init nsp_cs_init(void) 1778 { 1779 return pcmcia_register_driver(&nsp_driver); 1780 } 1781 1782 static void __exit nsp_cs_exit(void) 1783 { 1784 pcmcia_unregister_driver(&nsp_driver); 1785 } 1786 1787 1788 module_init(nsp_cs_init) 1789 module_exit(nsp_cs_exit) 1790 1791 /* end */ 1792