1 /* 2 * NinjaSCSI-32Bi Cardbus, NinjaSCSI-32UDE PCI/CardBus SCSI driver 3 * Copyright (C) 2001, 2002, 2003 4 * YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp> 5 * GOTO Masanori <gotom@debian.or.jp>, <gotom@debian.org> 6 * 7 * This program is free software; you can redistribute it and/or modify 8 * it under the terms of the GNU General Public License as published by 9 * the Free Software Foundation; either version 2, or (at your option) 10 * any later version. 11 * 12 * This program is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * GNU General Public License for more details. 16 * 17 * 18 * Revision History: 19 * 1.0: Initial Release. 20 * 1.1: Add /proc SDTR status. 21 * Remove obsolete error handler nsp32_reset. 22 * Some clean up. 23 * 1.2: PowerPC (big endian) support. 24 */ 25 26 #include <linux/version.h> 27 #include <linux/module.h> 28 #include <linux/init.h> 29 #include <linux/kernel.h> 30 #include <linux/sched.h> 31 #include <linux/slab.h> 32 #include <linux/string.h> 33 #include <linux/timer.h> 34 #include <linux/ioport.h> 35 #include <linux/major.h> 36 #include <linux/blkdev.h> 37 #include <linux/interrupt.h> 38 #include <linux/pci.h> 39 #include <linux/delay.h> 40 #include <linux/ctype.h> 41 #include <linux/dma-mapping.h> 42 43 #include <asm/dma.h> 44 #include <asm/system.h> 45 #include <asm/io.h> 46 47 #include <scsi/scsi.h> 48 #include <scsi/scsi_cmnd.h> 49 #include <scsi/scsi_device.h> 50 #include <scsi/scsi_host.h> 51 #include <scsi/scsi_ioctl.h> 52 53 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,0)) 54 # include <linux/blk.h> 55 #endif 56 57 #include "nsp32.h" 58 59 60 /*********************************************************************** 61 * Module parameters 62 */ 63 static int trans_mode = 0; /* default: BIOS */ 64 module_param (trans_mode, int, 0); 65 MODULE_PARM_DESC(trans_mode, "transfer mode (0: BIOS(default) 1: Async 2: Ultra20M"); 66 #define ASYNC_MODE 1 67 #define ULTRA20M_MODE 2 68 69 static int auto_param = 0; /* default: ON */ 70 module_param (auto_param, bool, 0); 71 MODULE_PARM_DESC(auto_param, "AutoParameter mode (0: ON(default) 1: OFF)"); 72 73 static int disc_priv = 1; /* default: OFF */ 74 module_param (disc_priv, bool, 0); 75 MODULE_PARM_DESC(disc_priv, "disconnection privilege mode (0: ON 1: OFF(default))"); 76 77 MODULE_AUTHOR("YOKOTA Hiroshi <yokota@netlab.is.tsukuba.ac.jp>, GOTO Masanori <gotom@debian.or.jp>"); 78 MODULE_DESCRIPTION("Workbit NinjaSCSI-32Bi/UDE CardBus/PCI SCSI host bus adapter module"); 79 MODULE_LICENSE("GPL"); 80 81 static const char *nsp32_release_version = "1.2"; 82 83 84 /**************************************************************************** 85 * Supported hardware 86 */ 87 static struct pci_device_id nsp32_pci_table[] __devinitdata = { 88 { 89 .vendor = PCI_VENDOR_ID_IODATA, 90 .device = PCI_DEVICE_ID_NINJASCSI_32BI_CBSC_II, 91 .subvendor = PCI_ANY_ID, 92 .subdevice = PCI_ANY_ID, 93 .driver_data = MODEL_IODATA, 94 }, 95 { 96 .vendor = PCI_VENDOR_ID_WORKBIT, 97 .device = PCI_DEVICE_ID_NINJASCSI_32BI_KME, 98 .subvendor = PCI_ANY_ID, 99 .subdevice = PCI_ANY_ID, 100 .driver_data = MODEL_KME, 101 }, 102 { 103 .vendor = PCI_VENDOR_ID_WORKBIT, 104 .device = PCI_DEVICE_ID_NINJASCSI_32BI_WBT, 105 .subvendor = PCI_ANY_ID, 106 .subdevice = PCI_ANY_ID, 107 .driver_data = MODEL_WORKBIT, 108 }, 109 { 110 .vendor = PCI_VENDOR_ID_WORKBIT, 111 .device = PCI_DEVICE_ID_WORKBIT_STANDARD, 112 .subvendor = PCI_ANY_ID, 113 .subdevice = PCI_ANY_ID, 114 .driver_data = MODEL_PCI_WORKBIT, 115 }, 116 { 117 .vendor = PCI_VENDOR_ID_WORKBIT, 118 .device = PCI_DEVICE_ID_NINJASCSI_32BI_LOGITEC, 119 .subvendor = PCI_ANY_ID, 120 .subdevice = PCI_ANY_ID, 121 .driver_data = MODEL_LOGITEC, 122 }, 123 { 124 .vendor = PCI_VENDOR_ID_WORKBIT, 125 .device = PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC, 126 .subvendor = PCI_ANY_ID, 127 .subdevice = PCI_ANY_ID, 128 .driver_data = MODEL_PCI_LOGITEC, 129 }, 130 { 131 .vendor = PCI_VENDOR_ID_WORKBIT, 132 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO, 133 .subvendor = PCI_ANY_ID, 134 .subdevice = PCI_ANY_ID, 135 .driver_data = MODEL_PCI_MELCO, 136 }, 137 { 138 .vendor = PCI_VENDOR_ID_WORKBIT, 139 .device = PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO_II, 140 .subvendor = PCI_ANY_ID, 141 .subdevice = PCI_ANY_ID, 142 .driver_data = MODEL_PCI_MELCO, 143 }, 144 {0,0,}, 145 }; 146 MODULE_DEVICE_TABLE(pci, nsp32_pci_table); 147 148 static nsp32_hw_data nsp32_data_base; /* probe <-> detect glue */ 149 150 151 /* 152 * Period/AckWidth speed conversion table 153 * 154 * Note: This period/ackwidth speed table must be in descending order. 155 */ 156 static nsp32_sync_table nsp32_sync_table_40M[] = { 157 /* {PNo, AW, SP, EP, SREQ smpl} Speed(MB/s) Period AckWidth */ 158 {0x1, 0, 0x0c, 0x0c, SMPL_40M}, /* 20.0 : 50ns, 25ns */ 159 {0x2, 0, 0x0d, 0x18, SMPL_40M}, /* 13.3 : 75ns, 25ns */ 160 {0x3, 1, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */ 161 {0x4, 1, 0x1a, 0x1f, SMPL_20M}, /* 8.0 : 125ns, 50ns */ 162 {0x5, 2, 0x20, 0x25, SMPL_20M}, /* 6.7 : 150ns, 75ns */ 163 {0x6, 2, 0x26, 0x31, SMPL_20M}, /* 5.7 : 175ns, 75ns */ 164 {0x7, 3, 0x32, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */ 165 {0x8, 3, 0x33, 0x38, SMPL_10M}, /* 4.4 : 225ns, 100ns */ 166 {0x9, 3, 0x39, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */ 167 }; 168 169 static nsp32_sync_table nsp32_sync_table_20M[] = { 170 {0x1, 0, 0x19, 0x19, SMPL_40M}, /* 10.0 : 100ns, 50ns */ 171 {0x2, 0, 0x1a, 0x25, SMPL_20M}, /* 6.7 : 150ns, 50ns */ 172 {0x3, 1, 0x26, 0x32, SMPL_20M}, /* 5.0 : 200ns, 100ns */ 173 {0x4, 1, 0x33, 0x3e, SMPL_10M}, /* 4.0 : 250ns, 100ns */ 174 {0x5, 2, 0x3f, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 150ns */ 175 {0x6, 2, 0x4c, 0x57, SMPL_10M}, /* 2.8 : 350ns, 150ns */ 176 {0x7, 3, 0x58, 0x64, SMPL_10M}, /* 2.5 : 400ns, 200ns */ 177 {0x8, 3, 0x65, 0x70, SMPL_10M}, /* 2.2 : 450ns, 200ns */ 178 {0x9, 3, 0x71, 0x7d, SMPL_10M}, /* 2.0 : 500ns, 200ns */ 179 }; 180 181 static nsp32_sync_table nsp32_sync_table_pci[] = { 182 {0x1, 0, 0x0c, 0x0f, SMPL_40M}, /* 16.6 : 60ns, 30ns */ 183 {0x2, 0, 0x10, 0x16, SMPL_40M}, /* 11.1 : 90ns, 30ns */ 184 {0x3, 1, 0x17, 0x1e, SMPL_20M}, /* 8.3 : 120ns, 60ns */ 185 {0x4, 1, 0x1f, 0x25, SMPL_20M}, /* 6.7 : 150ns, 60ns */ 186 {0x5, 2, 0x26, 0x2d, SMPL_20M}, /* 5.6 : 180ns, 90ns */ 187 {0x6, 2, 0x2e, 0x34, SMPL_10M}, /* 4.8 : 210ns, 90ns */ 188 {0x7, 3, 0x35, 0x3c, SMPL_10M}, /* 4.2 : 240ns, 120ns */ 189 {0x8, 3, 0x3d, 0x43, SMPL_10M}, /* 3.7 : 270ns, 120ns */ 190 {0x9, 3, 0x44, 0x4b, SMPL_10M}, /* 3.3 : 300ns, 120ns */ 191 }; 192 193 /* 194 * function declaration 195 */ 196 /* module entry point */ 197 static int __devinit nsp32_probe (struct pci_dev *, const struct pci_device_id *); 198 static void __devexit nsp32_remove(struct pci_dev *); 199 static int __init init_nsp32 (void); 200 static void __exit exit_nsp32 (void); 201 202 /* struct struct scsi_host_template */ 203 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 204 static int nsp32_proc_info (struct Scsi_Host *, char *, char **, off_t, int, int); 205 #else 206 static int nsp32_proc_info (char *, char **, off_t, int, int, int); 207 #endif 208 209 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 210 static int nsp32_detect (struct pci_dev *pdev); 211 #else 212 static int nsp32_detect (struct scsi_host_template *); 213 #endif 214 static int nsp32_queuecommand(struct scsi_cmnd *, 215 void (*done)(struct scsi_cmnd *)); 216 static const char *nsp32_info (struct Scsi_Host *); 217 static int nsp32_release (struct Scsi_Host *); 218 219 /* SCSI error handler */ 220 static int nsp32_eh_abort (struct scsi_cmnd *); 221 static int nsp32_eh_bus_reset (struct scsi_cmnd *); 222 static int nsp32_eh_host_reset(struct scsi_cmnd *); 223 224 /* generate SCSI message */ 225 static void nsp32_build_identify(struct scsi_cmnd *); 226 static void nsp32_build_nop (struct scsi_cmnd *); 227 static void nsp32_build_reject (struct scsi_cmnd *); 228 static void nsp32_build_sdtr (struct scsi_cmnd *, unsigned char, unsigned char); 229 230 /* SCSI message handler */ 231 static int nsp32_busfree_occur(struct scsi_cmnd *, unsigned short); 232 static void nsp32_msgout_occur (struct scsi_cmnd *); 233 static void nsp32_msgin_occur (struct scsi_cmnd *, unsigned long, unsigned short); 234 235 static int nsp32_setup_sg_table (struct scsi_cmnd *); 236 static int nsp32_selection_autopara(struct scsi_cmnd *); 237 static int nsp32_selection_autoscsi(struct scsi_cmnd *); 238 static void nsp32_scsi_done (struct scsi_cmnd *); 239 static int nsp32_arbitration (struct scsi_cmnd *, unsigned int); 240 static int nsp32_reselection (struct scsi_cmnd *, unsigned char); 241 static void nsp32_adjust_busfree (struct scsi_cmnd *, unsigned int); 242 static void nsp32_restart_autoscsi (struct scsi_cmnd *, unsigned short); 243 244 /* SCSI SDTR */ 245 static void nsp32_analyze_sdtr (struct scsi_cmnd *); 246 static int nsp32_search_period_entry(nsp32_hw_data *, nsp32_target *, unsigned char); 247 static void nsp32_set_async (nsp32_hw_data *, nsp32_target *); 248 static void nsp32_set_max_sync (nsp32_hw_data *, nsp32_target *, unsigned char *, unsigned char *); 249 static void nsp32_set_sync_entry (nsp32_hw_data *, nsp32_target *, int, unsigned char); 250 251 /* SCSI bus status handler */ 252 static void nsp32_wait_req (nsp32_hw_data *, int); 253 static void nsp32_wait_sack (nsp32_hw_data *, int); 254 static void nsp32_sack_assert (nsp32_hw_data *); 255 static void nsp32_sack_negate (nsp32_hw_data *); 256 static void nsp32_do_bus_reset(nsp32_hw_data *); 257 258 /* hardware interrupt handler */ 259 static irqreturn_t do_nsp32_isr(int, void *, struct pt_regs *); 260 261 /* initialize hardware */ 262 static int nsp32hw_init(nsp32_hw_data *); 263 264 /* EEPROM handler */ 265 static int nsp32_getprom_param (nsp32_hw_data *); 266 static int nsp32_getprom_at24 (nsp32_hw_data *); 267 static int nsp32_getprom_c16 (nsp32_hw_data *); 268 static void nsp32_prom_start (nsp32_hw_data *); 269 static void nsp32_prom_stop (nsp32_hw_data *); 270 static int nsp32_prom_read (nsp32_hw_data *, int); 271 static int nsp32_prom_read_bit (nsp32_hw_data *); 272 static void nsp32_prom_write_bit(nsp32_hw_data *, int); 273 static void nsp32_prom_set (nsp32_hw_data *, int, int); 274 static int nsp32_prom_get (nsp32_hw_data *, int); 275 276 /* debug/warning/info message */ 277 static void nsp32_message (const char *, int, char *, char *, ...); 278 #ifdef NSP32_DEBUG 279 static void nsp32_dmessage(const char *, int, int, char *, ...); 280 #endif 281 282 /* 283 * max_sectors is currently limited up to 128. 284 */ 285 static struct scsi_host_template nsp32_template = { 286 .proc_name = "nsp32", 287 .name = "Workbit NinjaSCSI-32Bi/UDE", 288 .proc_info = nsp32_proc_info, 289 .info = nsp32_info, 290 .queuecommand = nsp32_queuecommand, 291 .can_queue = 1, 292 .sg_tablesize = NSP32_SG_SIZE, 293 .max_sectors = 128, 294 .cmd_per_lun = 1, 295 .this_id = NSP32_HOST_SCSIID, 296 .use_clustering = DISABLE_CLUSTERING, 297 .eh_abort_handler = nsp32_eh_abort, 298 .eh_bus_reset_handler = nsp32_eh_bus_reset, 299 .eh_host_reset_handler = nsp32_eh_host_reset, 300 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,74)) 301 .detect = nsp32_detect, 302 .release = nsp32_release, 303 #endif 304 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,5,2)) 305 .use_new_eh_code = 1, 306 #else 307 /* .highmem_io = 1, */ 308 #endif 309 }; 310 311 #include "nsp32_io.h" 312 313 /*********************************************************************** 314 * debug, error print 315 */ 316 #ifndef NSP32_DEBUG 317 # define NSP32_DEBUG_MASK 0x000000 318 # define nsp32_msg(type, args...) nsp32_message ("", 0, (type), args) 319 # define nsp32_dbg(mask, args...) /* */ 320 #else 321 # define NSP32_DEBUG_MASK 0xffffff 322 # define nsp32_msg(type, args...) \ 323 nsp32_message (__FUNCTION__, __LINE__, (type), args) 324 # define nsp32_dbg(mask, args...) \ 325 nsp32_dmessage(__FUNCTION__, __LINE__, (mask), args) 326 #endif 327 328 #define NSP32_DEBUG_QUEUECOMMAND BIT(0) 329 #define NSP32_DEBUG_REGISTER BIT(1) 330 #define NSP32_DEBUG_AUTOSCSI BIT(2) 331 #define NSP32_DEBUG_INTR BIT(3) 332 #define NSP32_DEBUG_SGLIST BIT(4) 333 #define NSP32_DEBUG_BUSFREE BIT(5) 334 #define NSP32_DEBUG_CDB_CONTENTS BIT(6) 335 #define NSP32_DEBUG_RESELECTION BIT(7) 336 #define NSP32_DEBUG_MSGINOCCUR BIT(8) 337 #define NSP32_DEBUG_EEPROM BIT(9) 338 #define NSP32_DEBUG_MSGOUTOCCUR BIT(10) 339 #define NSP32_DEBUG_BUSRESET BIT(11) 340 #define NSP32_DEBUG_RESTART BIT(12) 341 #define NSP32_DEBUG_SYNC BIT(13) 342 #define NSP32_DEBUG_WAIT BIT(14) 343 #define NSP32_DEBUG_TARGETFLAG BIT(15) 344 #define NSP32_DEBUG_PROC BIT(16) 345 #define NSP32_DEBUG_INIT BIT(17) 346 #define NSP32_SPECIAL_PRINT_REGISTER BIT(20) 347 348 #define NSP32_DEBUG_BUF_LEN 100 349 350 static void nsp32_message(const char *func, int line, char *type, char *fmt, ...) 351 { 352 va_list args; 353 char buf[NSP32_DEBUG_BUF_LEN]; 354 355 va_start(args, fmt); 356 vsnprintf(buf, sizeof(buf), fmt, args); 357 va_end(args); 358 359 #ifndef NSP32_DEBUG 360 printk("%snsp32: %s\n", type, buf); 361 #else 362 printk("%snsp32: %s (%d): %s\n", type, func, line, buf); 363 #endif 364 } 365 366 #ifdef NSP32_DEBUG 367 static void nsp32_dmessage(const char *func, int line, int mask, char *fmt, ...) 368 { 369 va_list args; 370 char buf[NSP32_DEBUG_BUF_LEN]; 371 372 va_start(args, fmt); 373 vsnprintf(buf, sizeof(buf), fmt, args); 374 va_end(args); 375 376 if (mask & NSP32_DEBUG_MASK) { 377 printk("nsp32-debug: 0x%x %s (%d): %s\n", mask, func, line, buf); 378 } 379 } 380 #endif 381 382 #ifdef NSP32_DEBUG 383 # include "nsp32_debug.c" 384 #else 385 # define show_command(arg) /* */ 386 # define show_busphase(arg) /* */ 387 # define show_autophase(arg) /* */ 388 #endif 389 390 /* 391 * IDENTIFY Message 392 */ 393 static void nsp32_build_identify(struct scsi_cmnd *SCpnt) 394 { 395 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 396 int pos = data->msgout_len; 397 int mode = FALSE; 398 399 /* XXX: Auto DiscPriv detection is progressing... */ 400 if (disc_priv == 0) { 401 /* mode = TRUE; */ 402 } 403 404 data->msgoutbuf[pos] = IDENTIFY(mode, SCpnt->device->lun); pos++; 405 406 data->msgout_len = pos; 407 } 408 409 /* 410 * SDTR Message Routine 411 */ 412 static void nsp32_build_sdtr(struct scsi_cmnd *SCpnt, 413 unsigned char period, 414 unsigned char offset) 415 { 416 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 417 int pos = data->msgout_len; 418 419 data->msgoutbuf[pos] = EXTENDED_MESSAGE; pos++; 420 data->msgoutbuf[pos] = EXTENDED_SDTR_LEN; pos++; 421 data->msgoutbuf[pos] = EXTENDED_SDTR; pos++; 422 data->msgoutbuf[pos] = period; pos++; 423 data->msgoutbuf[pos] = offset; pos++; 424 425 data->msgout_len = pos; 426 } 427 428 /* 429 * No Operation Message 430 */ 431 static void nsp32_build_nop(struct scsi_cmnd *SCpnt) 432 { 433 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 434 int pos = data->msgout_len; 435 436 if (pos != 0) { 437 nsp32_msg(KERN_WARNING, 438 "Some messages are already contained!"); 439 return; 440 } 441 442 data->msgoutbuf[pos] = NOP; pos++; 443 data->msgout_len = pos; 444 } 445 446 /* 447 * Reject Message 448 */ 449 static void nsp32_build_reject(struct scsi_cmnd *SCpnt) 450 { 451 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 452 int pos = data->msgout_len; 453 454 data->msgoutbuf[pos] = MESSAGE_REJECT; pos++; 455 data->msgout_len = pos; 456 } 457 458 /* 459 * timer 460 */ 461 #if 0 462 static void nsp32_start_timer(struct scsi_cmnd *SCpnt, int time) 463 { 464 unsigned int base = SCpnt->host->io_port; 465 466 nsp32_dbg(NSP32_DEBUG_INTR, "timer=%d", time); 467 468 if (time & (~TIMER_CNT_MASK)) { 469 nsp32_dbg(NSP32_DEBUG_INTR, "timer set overflow"); 470 } 471 472 nsp32_write2(base, TIMER_SET, time & TIMER_CNT_MASK); 473 } 474 #endif 475 476 477 /* 478 * set SCSI command and other parameter to asic, and start selection phase 479 */ 480 static int nsp32_selection_autopara(struct scsi_cmnd *SCpnt) 481 { 482 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 483 unsigned int base = SCpnt->device->host->io_port; 484 unsigned int host_id = SCpnt->device->host->this_id; 485 unsigned char target = scmd_id(SCpnt); 486 nsp32_autoparam *param = data->autoparam; 487 unsigned char phase; 488 int i, ret; 489 unsigned int msgout; 490 u16_le s; 491 492 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in"); 493 494 /* 495 * check bus free 496 */ 497 phase = nsp32_read1(base, SCSI_BUS_MONITOR); 498 if (phase != BUSMON_BUS_FREE) { 499 nsp32_msg(KERN_WARNING, "bus busy"); 500 show_busphase(phase & BUSMON_PHASE_MASK); 501 SCpnt->result = DID_BUS_BUSY << 16; 502 return FALSE; 503 } 504 505 /* 506 * message out 507 * 508 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout. 509 * over 3 messages needs another routine. 510 */ 511 if (data->msgout_len == 0) { 512 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!"); 513 SCpnt->result = DID_ERROR << 16; 514 return FALSE; 515 } else if (data->msgout_len > 0 && data->msgout_len <= 3) { 516 msgout = 0; 517 for (i = 0; i < data->msgout_len; i++) { 518 /* 519 * the sending order of the message is: 520 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2 521 * MCNT 2: MSG#1 -> MSG#2 522 * MCNT 1: MSG#2 523 */ 524 msgout >>= 8; 525 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24); 526 } 527 msgout |= MV_VALID; /* MV valid */ 528 msgout |= (unsigned int)data->msgout_len; /* len */ 529 } else { 530 /* data->msgout_len > 3 */ 531 msgout = 0; 532 } 533 534 // nsp_dbg(NSP32_DEBUG_AUTOSCSI, "sel time out=0x%x\n", nsp32_read2(base, SEL_TIME_OUT)); 535 // nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); 536 537 /* 538 * setup asic parameter 539 */ 540 memset(param, 0, sizeof(nsp32_autoparam)); 541 542 /* cdb */ 543 for (i = 0; i < SCpnt->cmd_len; i++) { 544 param->cdb[4 * i] = SCpnt->cmnd[i]; 545 } 546 547 /* outgoing messages */ 548 param->msgout = cpu_to_le32(msgout); 549 550 /* syncreg, ackwidth, target id, SREQ sampling rate */ 551 param->syncreg = data->cur_target->syncreg; 552 param->ackwidth = data->cur_target->ackwidth; 553 param->target_id = BIT(host_id) | BIT(target); 554 param->sample_reg = data->cur_target->sample_reg; 555 556 // nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "sample rate=0x%x\n", data->cur_target->sample_reg); 557 558 /* command control */ 559 param->command_control = cpu_to_le16(CLEAR_CDB_FIFO_POINTER | 560 AUTOSCSI_START | 561 AUTO_MSGIN_00_OR_04 | 562 AUTO_MSGIN_02 | 563 AUTO_ATN ); 564 565 566 /* transfer control */ 567 s = 0; 568 switch (data->trans_method) { 569 case NSP32_TRANSFER_BUSMASTER: 570 s |= BM_START; 571 break; 572 case NSP32_TRANSFER_MMIO: 573 s |= CB_MMIO_MODE; 574 break; 575 case NSP32_TRANSFER_PIO: 576 s |= CB_IO_MODE; 577 break; 578 default: 579 nsp32_msg(KERN_ERR, "unknown trans_method"); 580 break; 581 } 582 /* 583 * OR-ed BLIEND_MODE, FIFO intr is decreased, instead of PCI bus waits. 584 * For bus master transfer, it's taken off. 585 */ 586 s |= (TRANSFER_GO | ALL_COUNTER_CLR); 587 param->transfer_control = cpu_to_le16(s); 588 589 /* sg table addr */ 590 param->sgt_pointer = cpu_to_le32(data->cur_lunt->sglun_paddr); 591 592 /* 593 * transfer parameter to ASIC 594 */ 595 nsp32_write4(base, SGT_ADR, data->auto_paddr); 596 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER | 597 AUTO_PARAMETER ); 598 599 /* 600 * Check arbitration 601 */ 602 ret = nsp32_arbitration(SCpnt, base); 603 604 return ret; 605 } 606 607 608 /* 609 * Selection with AUTO SCSI (without AUTO PARAMETER) 610 */ 611 static int nsp32_selection_autoscsi(struct scsi_cmnd *SCpnt) 612 { 613 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 614 unsigned int base = SCpnt->device->host->io_port; 615 unsigned int host_id = SCpnt->device->host->this_id; 616 unsigned char target = scmd_id(SCpnt); 617 unsigned char phase; 618 int status; 619 unsigned short command = 0; 620 unsigned int msgout = 0; 621 unsigned short execph; 622 int i; 623 624 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "in"); 625 626 /* 627 * IRQ disable 628 */ 629 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); 630 631 /* 632 * check bus line 633 */ 634 phase = nsp32_read1(base, SCSI_BUS_MONITOR); 635 if(((phase & BUSMON_BSY) == 1) || (phase & BUSMON_SEL) == 1) { 636 nsp32_msg(KERN_WARNING, "bus busy"); 637 SCpnt->result = DID_BUS_BUSY << 16; 638 status = 1; 639 goto out; 640 } 641 642 /* 643 * clear execph 644 */ 645 execph = nsp32_read2(base, SCSI_EXECUTE_PHASE); 646 647 /* 648 * clear FIFO counter to set CDBs 649 */ 650 nsp32_write2(base, COMMAND_CONTROL, CLEAR_CDB_FIFO_POINTER); 651 652 /* 653 * set CDB0 - CDB15 654 */ 655 for (i = 0; i < SCpnt->cmd_len; i++) { 656 nsp32_write1(base, COMMAND_DATA, SCpnt->cmnd[i]); 657 } 658 nsp32_dbg(NSP32_DEBUG_CDB_CONTENTS, "CDB[0]=[0x%x]", SCpnt->cmnd[0]); 659 660 /* 661 * set SCSIOUT LATCH(initiator)/TARGET(target) (OR-ed) ID 662 */ 663 nsp32_write1(base, SCSI_OUT_LATCH_TARGET_ID, BIT(host_id) | BIT(target)); 664 665 /* 666 * set SCSI MSGOUT REG 667 * 668 * Note: If the range of msgout_len is 1 - 3, fill scsi_msgout. 669 * over 3 messages needs another routine. 670 */ 671 if (data->msgout_len == 0) { 672 nsp32_msg(KERN_ERR, "SCSI MsgOut without any message!"); 673 SCpnt->result = DID_ERROR << 16; 674 status = 1; 675 goto out; 676 } else if (data->msgout_len > 0 && data->msgout_len <= 3) { 677 msgout = 0; 678 for (i = 0; i < data->msgout_len; i++) { 679 /* 680 * the sending order of the message is: 681 * MCNT 3: MSG#0 -> MSG#1 -> MSG#2 682 * MCNT 2: MSG#1 -> MSG#2 683 * MCNT 1: MSG#2 684 */ 685 msgout >>= 8; 686 msgout |= ((unsigned int)(data->msgoutbuf[i]) << 24); 687 } 688 msgout |= MV_VALID; /* MV valid */ 689 msgout |= (unsigned int)data->msgout_len; /* len */ 690 nsp32_write4(base, SCSI_MSG_OUT, msgout); 691 } else { 692 /* data->msgout_len > 3 */ 693 nsp32_write4(base, SCSI_MSG_OUT, 0); 694 } 695 696 /* 697 * set selection timeout(= 250ms) 698 */ 699 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); 700 701 /* 702 * set SREQ hazard killer sampling rate 703 * 704 * TODO: sample_rate (BASE+0F) is 0 when internal clock = 40MHz. 705 * check other internal clock! 706 */ 707 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg); 708 709 /* 710 * clear Arbit 711 */ 712 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR); 713 714 /* 715 * set SYNCREG 716 * Don't set BM_START_ADR before setting this register. 717 */ 718 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg); 719 720 /* 721 * set ACKWIDTH 722 */ 723 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth); 724 725 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, 726 "syncreg=0x%x, ackwidth=0x%x, sgtpaddr=0x%x, id=0x%x", 727 nsp32_read1(base, SYNC_REG), nsp32_read1(base, ACK_WIDTH), 728 nsp32_read4(base, SGT_ADR), nsp32_read1(base, SCSI_OUT_LATCH_TARGET_ID)); 729 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "msgout_len=%d, msgout=0x%x", 730 data->msgout_len, msgout); 731 732 /* 733 * set SGT ADDR (physical address) 734 */ 735 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr); 736 737 /* 738 * set TRANSFER CONTROL REG 739 */ 740 command = 0; 741 command |= (TRANSFER_GO | ALL_COUNTER_CLR); 742 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { 743 if (SCpnt->request_bufflen > 0) { 744 command |= BM_START; 745 } 746 } else if (data->trans_method & NSP32_TRANSFER_MMIO) { 747 command |= CB_MMIO_MODE; 748 } else if (data->trans_method & NSP32_TRANSFER_PIO) { 749 command |= CB_IO_MODE; 750 } 751 nsp32_write2(base, TRANSFER_CONTROL, command); 752 753 /* 754 * start AUTO SCSI, kick off arbitration 755 */ 756 command = (CLEAR_CDB_FIFO_POINTER | 757 AUTOSCSI_START | 758 AUTO_MSGIN_00_OR_04 | 759 AUTO_MSGIN_02 | 760 AUTO_ATN ); 761 nsp32_write2(base, COMMAND_CONTROL, command); 762 763 /* 764 * Check arbitration 765 */ 766 status = nsp32_arbitration(SCpnt, base); 767 768 out: 769 /* 770 * IRQ enable 771 */ 772 nsp32_write2(base, IRQ_CONTROL, 0); 773 774 return status; 775 } 776 777 778 /* 779 * Arbitration Status Check 780 * 781 * Note: Arbitration counter is waited during ARBIT_GO is not lifting. 782 * Using udelay(1) consumes CPU time and system time, but 783 * arbitration delay time is defined minimal 2.4us in SCSI 784 * specification, thus udelay works as coarse grained wait timer. 785 */ 786 static int nsp32_arbitration(struct scsi_cmnd *SCpnt, unsigned int base) 787 { 788 unsigned char arbit; 789 int status = TRUE; 790 int time = 0; 791 792 do { 793 arbit = nsp32_read1(base, ARBIT_STATUS); 794 time++; 795 } while ((arbit & (ARBIT_WIN | ARBIT_FAIL)) == 0 && 796 (time <= ARBIT_TIMEOUT_TIME)); 797 798 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, 799 "arbit: 0x%x, delay time: %d", arbit, time); 800 801 if (arbit & ARBIT_WIN) { 802 /* Arbitration succeeded */ 803 SCpnt->result = DID_OK << 16; 804 nsp32_index_write1(base, EXT_PORT, LED_ON); /* PCI LED on */ 805 } else if (arbit & ARBIT_FAIL) { 806 /* Arbitration failed */ 807 SCpnt->result = DID_BUS_BUSY << 16; 808 status = FALSE; 809 } else { 810 /* 811 * unknown error or ARBIT_GO timeout, 812 * something lock up! guess no connection. 813 */ 814 nsp32_dbg(NSP32_DEBUG_AUTOSCSI, "arbit timeout"); 815 SCpnt->result = DID_NO_CONNECT << 16; 816 status = FALSE; 817 } 818 819 /* 820 * clear Arbit 821 */ 822 nsp32_write1(base, SET_ARBIT, ARBIT_CLEAR); 823 824 return status; 825 } 826 827 828 /* 829 * reselection 830 * 831 * Note: This reselection routine is called from msgin_occur, 832 * reselection target id&lun must be already set. 833 * SCSI-2 says IDENTIFY implies RESTORE_POINTER operation. 834 */ 835 static int nsp32_reselection(struct scsi_cmnd *SCpnt, unsigned char newlun) 836 { 837 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 838 unsigned int host_id = SCpnt->device->host->this_id; 839 unsigned int base = SCpnt->device->host->io_port; 840 unsigned char tmpid, newid; 841 842 nsp32_dbg(NSP32_DEBUG_RESELECTION, "enter"); 843 844 /* 845 * calculate reselected SCSI ID 846 */ 847 tmpid = nsp32_read1(base, RESELECT_ID); 848 tmpid &= (~BIT(host_id)); 849 newid = 0; 850 while (tmpid) { 851 if (tmpid & 1) { 852 break; 853 } 854 tmpid >>= 1; 855 newid++; 856 } 857 858 /* 859 * If reselected New ID:LUN is not existed 860 * or current nexus is not existed, unexpected 861 * reselection is occurred. Send reject message. 862 */ 863 if (newid >= ARRAY_SIZE(data->lunt) || newlun >= ARRAY_SIZE(data->lunt[0])) { 864 nsp32_msg(KERN_WARNING, "unknown id/lun"); 865 return FALSE; 866 } else if(data->lunt[newid][newlun].SCpnt == NULL) { 867 nsp32_msg(KERN_WARNING, "no SCSI command is processing"); 868 return FALSE; 869 } 870 871 data->cur_id = newid; 872 data->cur_lun = newlun; 873 data->cur_target = &(data->target[newid]); 874 data->cur_lunt = &(data->lunt[newid][newlun]); 875 876 /* reset SACK/SavedACK counter (or ALL clear?) */ 877 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); 878 879 return TRUE; 880 } 881 882 883 /* 884 * nsp32_setup_sg_table - build scatter gather list for transfer data 885 * with bus master. 886 * 887 * Note: NinjaSCSI-32Bi/UDE bus master can not transfer over 64KB at a time. 888 */ 889 static int nsp32_setup_sg_table(struct scsi_cmnd *SCpnt) 890 { 891 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 892 struct scatterlist *sgl; 893 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt; 894 int num, i; 895 u32_le l; 896 897 if (SCpnt->request_bufflen == 0) { 898 return TRUE; 899 } 900 901 if (sgt == NULL) { 902 nsp32_dbg(NSP32_DEBUG_SGLIST, "SGT == null"); 903 return FALSE; 904 } 905 906 if (SCpnt->use_sg) { 907 sgl = (struct scatterlist *)SCpnt->request_buffer; 908 num = pci_map_sg(data->Pci, sgl, SCpnt->use_sg, 909 SCpnt->sc_data_direction); 910 for (i = 0; i < num; i++) { 911 /* 912 * Build nsp32_sglist, substitute sg dma addresses. 913 */ 914 sgt[i].addr = cpu_to_le32(sg_dma_address(sgl)); 915 sgt[i].len = cpu_to_le32(sg_dma_len(sgl)); 916 sgl++; 917 918 if (le32_to_cpu(sgt[i].len) > 0x10000) { 919 nsp32_msg(KERN_ERR, 920 "can't transfer over 64KB at a time, size=0x%lx", le32_to_cpu(sgt[i].len)); 921 return FALSE; 922 } 923 nsp32_dbg(NSP32_DEBUG_SGLIST, 924 "num 0x%x : addr 0x%lx len 0x%lx", 925 i, 926 le32_to_cpu(sgt[i].addr), 927 le32_to_cpu(sgt[i].len )); 928 } 929 930 /* set end mark */ 931 l = le32_to_cpu(sgt[num-1].len); 932 sgt[num-1].len = cpu_to_le32(l | SGTEND); 933 934 } else { 935 SCpnt->SCp.have_data_in = pci_map_single(data->Pci, 936 SCpnt->request_buffer, SCpnt->request_bufflen, 937 SCpnt->sc_data_direction); 938 939 sgt[0].addr = cpu_to_le32(SCpnt->SCp.have_data_in); 940 sgt[0].len = cpu_to_le32(SCpnt->request_bufflen | SGTEND); /* set end mark */ 941 942 if (SCpnt->request_bufflen > 0x10000) { 943 nsp32_msg(KERN_ERR, 944 "can't transfer over 64KB at a time, size=0x%lx", SCpnt->request_bufflen); 945 return FALSE; 946 } 947 nsp32_dbg(NSP32_DEBUG_SGLIST, "single : addr 0x%lx len=0x%lx", 948 le32_to_cpu(sgt[0].addr), 949 le32_to_cpu(sgt[0].len )); 950 } 951 952 return TRUE; 953 } 954 955 static int nsp32_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) 956 { 957 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 958 nsp32_target *target; 959 nsp32_lunt *cur_lunt; 960 int ret; 961 962 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, 963 "enter. target: 0x%x LUN: 0x%x cmnd: 0x%x cmndlen: 0x%x " 964 "use_sg: 0x%x reqbuf: 0x%lx reqlen: 0x%x", 965 SCpnt->device->id, SCpnt->device->lun, SCpnt->cmnd[0], SCpnt->cmd_len, 966 SCpnt->use_sg, SCpnt->request_buffer, SCpnt->request_bufflen); 967 968 if (data->CurrentSC != NULL) { 969 nsp32_msg(KERN_ERR, "Currentsc != NULL. Cancel this command request"); 970 data->CurrentSC = NULL; 971 SCpnt->result = DID_NO_CONNECT << 16; 972 done(SCpnt); 973 return 0; 974 } 975 976 /* check target ID is not same as this initiator ID */ 977 if (scmd_id(SCpnt) == SCpnt->device->host->this_id) { 978 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "terget==host???"); 979 SCpnt->result = DID_BAD_TARGET << 16; 980 done(SCpnt); 981 return 0; 982 } 983 984 /* check target LUN is allowable value */ 985 if (SCpnt->device->lun >= MAX_LUN) { 986 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "no more lun"); 987 SCpnt->result = DID_BAD_TARGET << 16; 988 done(SCpnt); 989 return 0; 990 } 991 992 show_command(SCpnt); 993 994 SCpnt->scsi_done = done; 995 data->CurrentSC = SCpnt; 996 SCpnt->SCp.Status = CHECK_CONDITION; 997 SCpnt->SCp.Message = 0; 998 SCpnt->resid = SCpnt->request_bufflen; 999 1000 SCpnt->SCp.ptr = (char *) SCpnt->request_buffer; 1001 SCpnt->SCp.this_residual = SCpnt->request_bufflen; 1002 SCpnt->SCp.buffer = NULL; 1003 SCpnt->SCp.buffers_residual = 0; 1004 1005 /* initialize data */ 1006 data->msgout_len = 0; 1007 data->msgin_len = 0; 1008 cur_lunt = &(data->lunt[SCpnt->device->id][SCpnt->device->lun]); 1009 cur_lunt->SCpnt = SCpnt; 1010 cur_lunt->save_datp = 0; 1011 cur_lunt->msgin03 = FALSE; 1012 data->cur_lunt = cur_lunt; 1013 data->cur_id = SCpnt->device->id; 1014 data->cur_lun = SCpnt->device->lun; 1015 1016 ret = nsp32_setup_sg_table(SCpnt); 1017 if (ret == FALSE) { 1018 nsp32_msg(KERN_ERR, "SGT fail"); 1019 SCpnt->result = DID_ERROR << 16; 1020 nsp32_scsi_done(SCpnt); 1021 return 0; 1022 } 1023 1024 /* Build IDENTIFY */ 1025 nsp32_build_identify(SCpnt); 1026 1027 /* 1028 * If target is the first time to transfer after the reset 1029 * (target don't have SDTR_DONE and SDTR_INITIATOR), sync 1030 * message SDTR is needed to do synchronous transfer. 1031 */ 1032 target = &data->target[scmd_id(SCpnt)]; 1033 data->cur_target = target; 1034 1035 if (!(target->sync_flag & (SDTR_DONE | SDTR_INITIATOR | SDTR_TARGET))) { 1036 unsigned char period, offset; 1037 1038 if (trans_mode != ASYNC_MODE) { 1039 nsp32_set_max_sync(data, target, &period, &offset); 1040 nsp32_build_sdtr(SCpnt, period, offset); 1041 target->sync_flag |= SDTR_INITIATOR; 1042 } else { 1043 nsp32_set_async(data, target); 1044 target->sync_flag |= SDTR_DONE; 1045 } 1046 1047 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, 1048 "SDTR: entry: %d start_period: 0x%x offset: 0x%x\n", 1049 target->limit_entry, period, offset); 1050 } else if (target->sync_flag & SDTR_INITIATOR) { 1051 /* 1052 * It was negotiating SDTR with target, sending from the 1053 * initiator, but there are no chance to remove this flag. 1054 * Set async because we don't get proper negotiation. 1055 */ 1056 nsp32_set_async(data, target); 1057 target->sync_flag &= ~SDTR_INITIATOR; 1058 target->sync_flag |= SDTR_DONE; 1059 1060 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, 1061 "SDTR_INITIATOR: fall back to async"); 1062 } else if (target->sync_flag & SDTR_TARGET) { 1063 /* 1064 * It was negotiating SDTR with target, sending from target, 1065 * but there are no chance to remove this flag. Set async 1066 * because we don't get proper negotiation. 1067 */ 1068 nsp32_set_async(data, target); 1069 target->sync_flag &= ~SDTR_TARGET; 1070 target->sync_flag |= SDTR_DONE; 1071 1072 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, 1073 "Unknown SDTR from target is reached, fall back to async."); 1074 } 1075 1076 nsp32_dbg(NSP32_DEBUG_TARGETFLAG, 1077 "target: %d sync_flag: 0x%x syncreg: 0x%x ackwidth: 0x%x", 1078 SCpnt->device->id, target->sync_flag, target->syncreg, 1079 target->ackwidth); 1080 1081 /* Selection */ 1082 if (auto_param == 0) { 1083 ret = nsp32_selection_autopara(SCpnt); 1084 } else { 1085 ret = nsp32_selection_autoscsi(SCpnt); 1086 } 1087 1088 if (ret != TRUE) { 1089 nsp32_dbg(NSP32_DEBUG_QUEUECOMMAND, "selection fail"); 1090 nsp32_scsi_done(SCpnt); 1091 } 1092 1093 return 0; 1094 } 1095 1096 /* initialize asic */ 1097 static int nsp32hw_init(nsp32_hw_data *data) 1098 { 1099 unsigned int base = data->BaseAddress; 1100 unsigned short irq_stat; 1101 unsigned long lc_reg; 1102 unsigned char power; 1103 1104 lc_reg = nsp32_index_read4(base, CFG_LATE_CACHE); 1105 if ((lc_reg & 0xff00) == 0) { 1106 lc_reg |= (0x20 << 8); 1107 nsp32_index_write2(base, CFG_LATE_CACHE, lc_reg & 0xffff); 1108 } 1109 1110 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); 1111 nsp32_write2(base, TRANSFER_CONTROL, 0); 1112 nsp32_write4(base, BM_CNT, 0); 1113 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0); 1114 1115 do { 1116 irq_stat = nsp32_read2(base, IRQ_STATUS); 1117 nsp32_dbg(NSP32_DEBUG_INIT, "irq_stat 0x%x", irq_stat); 1118 } while (irq_stat & IRQSTATUS_ANY_IRQ); 1119 1120 /* 1121 * Fill FIFO_FULL_SHLD, FIFO_EMPTY_SHLD. Below parameter is 1122 * designated by specification. 1123 */ 1124 if ((data->trans_method & NSP32_TRANSFER_PIO) || 1125 (data->trans_method & NSP32_TRANSFER_MMIO)) { 1126 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x40); 1127 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x40); 1128 } else if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { 1129 nsp32_index_write1(base, FIFO_FULL_SHLD_COUNT, 0x10); 1130 nsp32_index_write1(base, FIFO_EMPTY_SHLD_COUNT, 0x60); 1131 } else { 1132 nsp32_dbg(NSP32_DEBUG_INIT, "unknown transfer mode"); 1133 } 1134 1135 nsp32_dbg(NSP32_DEBUG_INIT, "full 0x%x emp 0x%x", 1136 nsp32_index_read1(base, FIFO_FULL_SHLD_COUNT), 1137 nsp32_index_read1(base, FIFO_EMPTY_SHLD_COUNT)); 1138 1139 nsp32_index_write1(base, CLOCK_DIV, data->clock); 1140 nsp32_index_write1(base, BM_CYCLE, MEMRD_CMD1 | SGT_AUTO_PARA_MEMED_CMD); 1141 nsp32_write1(base, PARITY_CONTROL, 0); /* parity check is disable */ 1142 1143 /* 1144 * initialize MISC_WRRD register 1145 * 1146 * Note: Designated parameters is obeyed as following: 1147 * MISC_SCSI_DIRECTION_DETECTOR_SELECT: It must be set. 1148 * MISC_MASTER_TERMINATION_SELECT: It must be set. 1149 * MISC_BMREQ_NEGATE_TIMING_SEL: It should be set. 1150 * MISC_AUTOSEL_TIMING_SEL: It should be set. 1151 * MISC_BMSTOP_CHANGE2_NONDATA_PHASE: It should be set. 1152 * MISC_DELAYED_BMSTART: It's selected for safety. 1153 * 1154 * Note: If MISC_BMSTOP_CHANGE2_NONDATA_PHASE is set, then 1155 * we have to set TRANSFERCONTROL_BM_START as 0 and set 1156 * appropriate value before restarting bus master transfer. 1157 */ 1158 nsp32_index_write2(base, MISC_WR, 1159 (SCSI_DIRECTION_DETECTOR_SELECT | 1160 DELAYED_BMSTART | 1161 MASTER_TERMINATION_SELECT | 1162 BMREQ_NEGATE_TIMING_SEL | 1163 AUTOSEL_TIMING_SEL | 1164 BMSTOP_CHANGE2_NONDATA_PHASE)); 1165 1166 nsp32_index_write1(base, TERM_PWR_CONTROL, 0); 1167 power = nsp32_index_read1(base, TERM_PWR_CONTROL); 1168 if (!(power & SENSE)) { 1169 nsp32_msg(KERN_INFO, "term power on"); 1170 nsp32_index_write1(base, TERM_PWR_CONTROL, BPWR); 1171 } 1172 1173 nsp32_write2(base, TIMER_SET, TIMER_STOP); 1174 nsp32_write2(base, TIMER_SET, TIMER_STOP); /* Required 2 times */ 1175 1176 nsp32_write1(base, SYNC_REG, 0); 1177 nsp32_write1(base, ACK_WIDTH, 0); 1178 nsp32_write2(base, SEL_TIME_OUT, SEL_TIMEOUT_TIME); 1179 1180 /* 1181 * enable to select designated IRQ (except for 1182 * IRQSELECT_SERR, IRQSELECT_PERR, IRQSELECT_BMCNTERR) 1183 */ 1184 nsp32_index_write2(base, IRQ_SELECT, IRQSELECT_TIMER_IRQ | 1185 IRQSELECT_SCSIRESET_IRQ | 1186 IRQSELECT_FIFO_SHLD_IRQ | 1187 IRQSELECT_RESELECT_IRQ | 1188 IRQSELECT_PHASE_CHANGE_IRQ | 1189 IRQSELECT_AUTO_SCSI_SEQ_IRQ | 1190 // IRQSELECT_BMCNTERR_IRQ | 1191 IRQSELECT_TARGET_ABORT_IRQ | 1192 IRQSELECT_MASTER_ABORT_IRQ ); 1193 nsp32_write2(base, IRQ_CONTROL, 0); 1194 1195 /* PCI LED off */ 1196 nsp32_index_write1(base, EXT_PORT_DDR, LED_OFF); 1197 nsp32_index_write1(base, EXT_PORT, LED_OFF); 1198 1199 return TRUE; 1200 } 1201 1202 1203 /* interrupt routine */ 1204 static irqreturn_t do_nsp32_isr(int irq, void *dev_id, struct pt_regs *regs) 1205 { 1206 nsp32_hw_data *data = dev_id; 1207 unsigned int base = data->BaseAddress; 1208 struct scsi_cmnd *SCpnt = data->CurrentSC; 1209 unsigned short auto_stat, irq_stat, trans_stat; 1210 unsigned char busmon, busphase; 1211 unsigned long flags; 1212 int ret; 1213 int handled = 0; 1214 1215 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) 1216 struct Scsi_Host *host = data->Host; 1217 spin_lock_irqsave(host->host_lock, flags); 1218 #else 1219 spin_lock_irqsave(&io_request_lock, flags); 1220 #endif 1221 1222 /* 1223 * IRQ check, then enable IRQ mask 1224 */ 1225 irq_stat = nsp32_read2(base, IRQ_STATUS); 1226 nsp32_dbg(NSP32_DEBUG_INTR, 1227 "enter IRQ: %d, IRQstatus: 0x%x", irq, irq_stat); 1228 /* is this interrupt comes from Ninja asic? */ 1229 if ((irq_stat & IRQSTATUS_ANY_IRQ) == 0) { 1230 nsp32_dbg(NSP32_DEBUG_INTR, "shared interrupt: irq other 0x%x", irq_stat); 1231 goto out2; 1232 } 1233 handled = 1; 1234 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); 1235 1236 busmon = nsp32_read1(base, SCSI_BUS_MONITOR); 1237 busphase = busmon & BUSMON_PHASE_MASK; 1238 1239 trans_stat = nsp32_read2(base, TRANSFER_STATUS); 1240 if ((irq_stat == 0xffff) && (trans_stat == 0xffff)) { 1241 nsp32_msg(KERN_INFO, "card disconnect"); 1242 if (data->CurrentSC != NULL) { 1243 nsp32_msg(KERN_INFO, "clean up current SCSI command"); 1244 SCpnt->result = DID_BAD_TARGET << 16; 1245 nsp32_scsi_done(SCpnt); 1246 } 1247 goto out; 1248 } 1249 1250 /* Timer IRQ */ 1251 if (irq_stat & IRQSTATUS_TIMER_IRQ) { 1252 nsp32_dbg(NSP32_DEBUG_INTR, "timer stop"); 1253 nsp32_write2(base, TIMER_SET, TIMER_STOP); 1254 goto out; 1255 } 1256 1257 /* SCSI reset */ 1258 if (irq_stat & IRQSTATUS_SCSIRESET_IRQ) { 1259 nsp32_msg(KERN_INFO, "detected someone do bus reset"); 1260 nsp32_do_bus_reset(data); 1261 if (SCpnt != NULL) { 1262 SCpnt->result = DID_RESET << 16; 1263 nsp32_scsi_done(SCpnt); 1264 } 1265 goto out; 1266 } 1267 1268 if (SCpnt == NULL) { 1269 nsp32_msg(KERN_WARNING, "SCpnt==NULL this can't be happened"); 1270 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat); 1271 goto out; 1272 } 1273 1274 /* 1275 * AutoSCSI Interrupt. 1276 * Note: This interrupt is occurred when AutoSCSI is finished. Then 1277 * check SCSIEXECUTEPHASE, and do appropriate action. Each phases are 1278 * recorded when AutoSCSI sequencer has been processed. 1279 */ 1280 if(irq_stat & IRQSTATUS_AUTOSCSI_IRQ) { 1281 /* getting SCSI executed phase */ 1282 auto_stat = nsp32_read2(base, SCSI_EXECUTE_PHASE); 1283 nsp32_write2(base, SCSI_EXECUTE_PHASE, 0); 1284 1285 /* Selection Timeout, go busfree phase. */ 1286 if (auto_stat & SELECTION_TIMEOUT) { 1287 nsp32_dbg(NSP32_DEBUG_INTR, 1288 "selection timeout occurred"); 1289 1290 SCpnt->result = DID_TIME_OUT << 16; 1291 nsp32_scsi_done(SCpnt); 1292 goto out; 1293 } 1294 1295 if (auto_stat & MSGOUT_PHASE) { 1296 /* 1297 * MsgOut phase was processed. 1298 * If MSG_IN_OCCUER is not set, then MsgOut phase is 1299 * completed. Thus, msgout_len must reset. Otherwise, 1300 * nothing to do here. If MSG_OUT_OCCUER is occurred, 1301 * then we will encounter the condition and check. 1302 */ 1303 if (!(auto_stat & MSG_IN_OCCUER) && 1304 (data->msgout_len <= 3)) { 1305 /* 1306 * !MSG_IN_OCCUER && msgout_len <=3 1307 * ---> AutoSCSI with MSGOUTreg is processed. 1308 */ 1309 data->msgout_len = 0; 1310 }; 1311 1312 nsp32_dbg(NSP32_DEBUG_INTR, "MsgOut phase processed"); 1313 } 1314 1315 if ((auto_stat & DATA_IN_PHASE) && 1316 (SCpnt->resid > 0) && 1317 ((nsp32_read2(base, FIFO_REST_CNT) & FIFO_REST_MASK) != 0)) { 1318 printk( "auto+fifo\n"); 1319 //nsp32_pio_read(SCpnt); 1320 } 1321 1322 if (auto_stat & (DATA_IN_PHASE | DATA_OUT_PHASE)) { 1323 /* DATA_IN_PHASE/DATA_OUT_PHASE was processed. */ 1324 nsp32_dbg(NSP32_DEBUG_INTR, 1325 "Data in/out phase processed"); 1326 1327 /* read BMCNT, SGT pointer addr */ 1328 nsp32_dbg(NSP32_DEBUG_INTR, "BMCNT=0x%lx", 1329 nsp32_read4(base, BM_CNT)); 1330 nsp32_dbg(NSP32_DEBUG_INTR, "addr=0x%lx", 1331 nsp32_read4(base, SGT_ADR)); 1332 nsp32_dbg(NSP32_DEBUG_INTR, "SACK=0x%lx", 1333 nsp32_read4(base, SACK_CNT)); 1334 nsp32_dbg(NSP32_DEBUG_INTR, "SSACK=0x%lx", 1335 nsp32_read4(base, SAVED_SACK_CNT)); 1336 1337 SCpnt->resid = 0; /* all data transfered! */ 1338 } 1339 1340 /* 1341 * MsgIn Occur 1342 */ 1343 if (auto_stat & MSG_IN_OCCUER) { 1344 nsp32_msgin_occur(SCpnt, irq_stat, auto_stat); 1345 } 1346 1347 /* 1348 * MsgOut Occur 1349 */ 1350 if (auto_stat & MSG_OUT_OCCUER) { 1351 nsp32_msgout_occur(SCpnt); 1352 } 1353 1354 /* 1355 * Bus Free Occur 1356 */ 1357 if (auto_stat & BUS_FREE_OCCUER) { 1358 ret = nsp32_busfree_occur(SCpnt, auto_stat); 1359 if (ret == TRUE) { 1360 goto out; 1361 } 1362 } 1363 1364 if (auto_stat & STATUS_PHASE) { 1365 /* 1366 * Read CSB and substitute CSB for SCpnt->result 1367 * to save status phase stutas byte. 1368 * scsi error handler checks host_byte (DID_*: 1369 * low level driver to indicate status), then checks 1370 * status_byte (SCSI status byte). 1371 */ 1372 SCpnt->result = (int)nsp32_read1(base, SCSI_CSB_IN); 1373 } 1374 1375 if (auto_stat & ILLEGAL_PHASE) { 1376 /* Illegal phase is detected. SACK is not back. */ 1377 nsp32_msg(KERN_WARNING, 1378 "AUTO SCSI ILLEGAL PHASE OCCUR!!!!"); 1379 1380 /* TODO: currently we don't have any action... bus reset? */ 1381 1382 /* 1383 * To send back SACK, assert, wait, and negate. 1384 */ 1385 nsp32_sack_assert(data); 1386 nsp32_wait_req(data, NEGATE); 1387 nsp32_sack_negate(data); 1388 1389 } 1390 1391 if (auto_stat & COMMAND_PHASE) { 1392 /* nothing to do */ 1393 nsp32_dbg(NSP32_DEBUG_INTR, "Command phase processed"); 1394 } 1395 1396 if (auto_stat & AUTOSCSI_BUSY) { 1397 /* AutoSCSI is running */ 1398 } 1399 1400 show_autophase(auto_stat); 1401 } 1402 1403 /* FIFO_SHLD_IRQ */ 1404 if (irq_stat & IRQSTATUS_FIFO_SHLD_IRQ) { 1405 nsp32_dbg(NSP32_DEBUG_INTR, "FIFO IRQ"); 1406 1407 switch(busphase) { 1408 case BUSPHASE_DATA_OUT: 1409 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/write"); 1410 1411 //nsp32_pio_write(SCpnt); 1412 1413 break; 1414 1415 case BUSPHASE_DATA_IN: 1416 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/read"); 1417 1418 //nsp32_pio_read(SCpnt); 1419 1420 break; 1421 1422 case BUSPHASE_STATUS: 1423 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/status"); 1424 1425 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN); 1426 1427 break; 1428 default: 1429 nsp32_dbg(NSP32_DEBUG_INTR, "fifo/other phase"); 1430 nsp32_dbg(NSP32_DEBUG_INTR, "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat); 1431 show_busphase(busphase); 1432 break; 1433 } 1434 1435 goto out; 1436 } 1437 1438 /* Phase Change IRQ */ 1439 if (irq_stat & IRQSTATUS_PHASE_CHANGE_IRQ) { 1440 nsp32_dbg(NSP32_DEBUG_INTR, "phase change IRQ"); 1441 1442 switch(busphase) { 1443 case BUSPHASE_MESSAGE_IN: 1444 nsp32_dbg(NSP32_DEBUG_INTR, "phase chg/msg in"); 1445 nsp32_msgin_occur(SCpnt, irq_stat, 0); 1446 break; 1447 default: 1448 nsp32_msg(KERN_WARNING, "phase chg/other phase?"); 1449 nsp32_msg(KERN_WARNING, "irq_stat=0x%x trans_stat=0x%x\n", 1450 irq_stat, trans_stat); 1451 show_busphase(busphase); 1452 break; 1453 } 1454 goto out; 1455 } 1456 1457 /* PCI_IRQ */ 1458 if (irq_stat & IRQSTATUS_PCI_IRQ) { 1459 nsp32_dbg(NSP32_DEBUG_INTR, "PCI IRQ occurred"); 1460 /* Do nothing */ 1461 } 1462 1463 /* BMCNTERR_IRQ */ 1464 if (irq_stat & IRQSTATUS_BMCNTERR_IRQ) { 1465 nsp32_msg(KERN_ERR, "Received unexpected BMCNTERR IRQ! "); 1466 /* 1467 * TODO: To be implemented improving bus master 1468 * transfer reliablity when BMCNTERR is occurred in 1469 * AutoSCSI phase described in specification. 1470 */ 1471 } 1472 1473 #if 0 1474 nsp32_dbg(NSP32_DEBUG_INTR, 1475 "irq_stat=0x%x trans_stat=0x%x", irq_stat, trans_stat); 1476 show_busphase(busphase); 1477 #endif 1478 1479 out: 1480 /* disable IRQ mask */ 1481 nsp32_write2(base, IRQ_CONTROL, 0); 1482 1483 out2: 1484 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,0)) 1485 spin_unlock_irqrestore(host->host_lock, flags); 1486 #else 1487 spin_unlock_irqrestore(&io_request_lock, flags); 1488 #endif 1489 1490 nsp32_dbg(NSP32_DEBUG_INTR, "exit"); 1491 1492 return IRQ_RETVAL(handled); 1493 } 1494 1495 #undef SPRINTF 1496 #define SPRINTF(args...) \ 1497 do { \ 1498 if(length > (pos - buffer)) { \ 1499 pos += snprintf(pos, length - (pos - buffer) + 1, ## args); \ 1500 nsp32_dbg(NSP32_DEBUG_PROC, "buffer=0x%p pos=0x%p length=%d %d\n", buffer, pos, length, length - (pos - buffer));\ 1501 } \ 1502 } while(0) 1503 static int nsp32_proc_info( 1504 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 1505 struct Scsi_Host *host, 1506 #endif 1507 char *buffer, 1508 char **start, 1509 off_t offset, 1510 int length, 1511 #if !(LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 1512 int hostno, 1513 #endif 1514 int inout) 1515 { 1516 char *pos = buffer; 1517 int thislength; 1518 unsigned long flags; 1519 nsp32_hw_data *data; 1520 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 1521 int hostno; 1522 #else 1523 struct Scsi_Host *host; 1524 #endif 1525 unsigned int base; 1526 unsigned char mode_reg; 1527 int id, speed; 1528 long model; 1529 1530 /* Write is not supported, just return. */ 1531 if (inout == TRUE) { 1532 return -EINVAL; 1533 } 1534 1535 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 1536 hostno = host->host_no; 1537 #else 1538 /* search this HBA host */ 1539 host = scsi_host_hn_get(hostno); 1540 if (host == NULL) { 1541 return -ESRCH; 1542 } 1543 #endif 1544 data = (nsp32_hw_data *)host->hostdata; 1545 base = host->io_port; 1546 1547 SPRINTF("NinjaSCSI-32 status\n\n"); 1548 SPRINTF("Driver version: %s, $Revision: 1.33 $\n", nsp32_release_version); 1549 SPRINTF("SCSI host No.: %d\n", hostno); 1550 SPRINTF("IRQ: %d\n", host->irq); 1551 SPRINTF("IO: 0x%lx-0x%lx\n", host->io_port, host->io_port + host->n_io_port - 1); 1552 SPRINTF("MMIO(virtual address): 0x%lx-0x%lx\n", host->base, host->base + data->MmioLength - 1); 1553 SPRINTF("sg_tablesize: %d\n", host->sg_tablesize); 1554 SPRINTF("Chip revision: 0x%x\n", (nsp32_read2(base, INDEX_REG) >> 8) & 0xff); 1555 1556 mode_reg = nsp32_index_read1(base, CHIP_MODE); 1557 model = data->pci_devid->driver_data; 1558 1559 #ifdef CONFIG_PM 1560 SPRINTF("Power Management: %s\n", (mode_reg & OPTF) ? "yes" : "no"); 1561 #endif 1562 SPRINTF("OEM: %ld, %s\n", (mode_reg & (OEM0|OEM1)), nsp32_model[model]); 1563 1564 spin_lock_irqsave(&(data->Lock), flags); 1565 SPRINTF("CurrentSC: 0x%p\n\n", data->CurrentSC); 1566 spin_unlock_irqrestore(&(data->Lock), flags); 1567 1568 1569 SPRINTF("SDTR status\n"); 1570 for (id = 0; id < ARRAY_SIZE(data->target); id++) { 1571 1572 SPRINTF("id %d: ", id); 1573 1574 if (id == host->this_id) { 1575 SPRINTF("----- NinjaSCSI-32 host adapter\n"); 1576 continue; 1577 } 1578 1579 if (data->target[id].sync_flag == SDTR_DONE) { 1580 if (data->target[id].period == 0 && 1581 data->target[id].offset == ASYNC_OFFSET ) { 1582 SPRINTF("async"); 1583 } else { 1584 SPRINTF(" sync"); 1585 } 1586 } else { 1587 SPRINTF(" none"); 1588 } 1589 1590 if (data->target[id].period != 0) { 1591 1592 speed = 1000000 / (data->target[id].period * 4); 1593 1594 SPRINTF(" transfer %d.%dMB/s, offset %d", 1595 speed / 1000, 1596 speed % 1000, 1597 data->target[id].offset 1598 ); 1599 } 1600 SPRINTF("\n"); 1601 } 1602 1603 1604 thislength = pos - (buffer + offset); 1605 1606 if(thislength < 0) { 1607 *start = NULL; 1608 return 0; 1609 } 1610 1611 1612 thislength = min(thislength, length); 1613 *start = buffer + offset; 1614 1615 return thislength; 1616 } 1617 #undef SPRINTF 1618 1619 1620 1621 /* 1622 * Reset parameters and call scsi_done for data->cur_lunt. 1623 * Be careful setting SCpnt->result = DID_* before calling this function. 1624 */ 1625 static void nsp32_scsi_done(struct scsi_cmnd *SCpnt) 1626 { 1627 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 1628 unsigned int base = SCpnt->device->host->io_port; 1629 1630 /* 1631 * unmap pci 1632 */ 1633 if (SCpnt->request_bufflen == 0) { 1634 goto skip; 1635 } 1636 1637 if (SCpnt->use_sg) { 1638 pci_unmap_sg(data->Pci, 1639 (struct scatterlist *)SCpnt->request_buffer, 1640 SCpnt->use_sg, SCpnt->sc_data_direction); 1641 } else { 1642 pci_unmap_single(data->Pci, 1643 (u32)SCpnt->SCp.have_data_in, 1644 SCpnt->request_bufflen, 1645 SCpnt->sc_data_direction); 1646 } 1647 1648 skip: 1649 /* 1650 * clear TRANSFERCONTROL_BM_START 1651 */ 1652 nsp32_write2(base, TRANSFER_CONTROL, 0); 1653 nsp32_write4(base, BM_CNT, 0); 1654 1655 /* 1656 * call scsi_done 1657 */ 1658 (*SCpnt->scsi_done)(SCpnt); 1659 1660 /* 1661 * reset parameters 1662 */ 1663 data->cur_lunt->SCpnt = NULL; 1664 data->cur_lunt = NULL; 1665 data->cur_target = NULL; 1666 data->CurrentSC = NULL; 1667 } 1668 1669 1670 /* 1671 * Bus Free Occur 1672 * 1673 * Current Phase is BUSFREE. AutoSCSI is automatically execute BUSFREE phase 1674 * with ACK reply when below condition is matched: 1675 * MsgIn 00: Command Complete. 1676 * MsgIn 02: Save Data Pointer. 1677 * MsgIn 04: Diconnect. 1678 * In other case, unexpected BUSFREE is detected. 1679 */ 1680 static int nsp32_busfree_occur(struct scsi_cmnd *SCpnt, unsigned short execph) 1681 { 1682 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 1683 unsigned int base = SCpnt->device->host->io_port; 1684 1685 nsp32_dbg(NSP32_DEBUG_BUSFREE, "enter execph=0x%x", execph); 1686 show_autophase(execph); 1687 1688 nsp32_write4(base, BM_CNT, 0); 1689 nsp32_write2(base, TRANSFER_CONTROL, 0); 1690 1691 /* 1692 * MsgIn 02: Save Data Pointer 1693 * 1694 * VALID: 1695 * Save Data Pointer is received. Adjust pointer. 1696 * 1697 * NO-VALID: 1698 * SCSI-3 says if Save Data Pointer is not received, then we restart 1699 * processing and we can't adjust any SCSI data pointer in next data 1700 * phase. 1701 */ 1702 if (execph & MSGIN_02_VALID) { 1703 nsp32_dbg(NSP32_DEBUG_BUSFREE, "MsgIn02_Valid"); 1704 1705 /* 1706 * Check sack_cnt/saved_sack_cnt, then adjust sg table if 1707 * needed. 1708 */ 1709 if (!(execph & MSGIN_00_VALID) && 1710 ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE))) { 1711 unsigned int sacklen, s_sacklen; 1712 1713 /* 1714 * Read SACK count and SAVEDSACK count, then compare. 1715 */ 1716 sacklen = nsp32_read4(base, SACK_CNT ); 1717 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT); 1718 1719 /* 1720 * If SAVEDSACKCNT == 0, it means SavedDataPointer is 1721 * come after data transfering. 1722 */ 1723 if (s_sacklen > 0) { 1724 /* 1725 * Comparing between sack and savedsack to 1726 * check the condition of AutoMsgIn03. 1727 * 1728 * If they are same, set msgin03 == TRUE, 1729 * COMMANDCONTROL_AUTO_MSGIN_03 is enabled at 1730 * reselection. On the other hand, if they 1731 * aren't same, set msgin03 == FALSE, and 1732 * COMMANDCONTROL_AUTO_MSGIN_03 is disabled at 1733 * reselection. 1734 */ 1735 if (sacklen != s_sacklen) { 1736 data->cur_lunt->msgin03 = FALSE; 1737 } else { 1738 data->cur_lunt->msgin03 = TRUE; 1739 } 1740 1741 nsp32_adjust_busfree(SCpnt, s_sacklen); 1742 } 1743 } 1744 1745 /* This value has not substitude with valid value yet... */ 1746 //data->cur_lunt->save_datp = data->cur_datp; 1747 } else { 1748 /* 1749 * no processing. 1750 */ 1751 } 1752 1753 if (execph & MSGIN_03_VALID) { 1754 /* MsgIn03 was valid to be processed. No need processing. */ 1755 } 1756 1757 /* 1758 * target SDTR check 1759 */ 1760 if (data->cur_target->sync_flag & SDTR_INITIATOR) { 1761 /* 1762 * SDTR negotiation pulled by the initiator has not 1763 * finished yet. Fall back to ASYNC mode. 1764 */ 1765 nsp32_set_async(data, data->cur_target); 1766 data->cur_target->sync_flag &= ~SDTR_INITIATOR; 1767 data->cur_target->sync_flag |= SDTR_DONE; 1768 } else if (data->cur_target->sync_flag & SDTR_TARGET) { 1769 /* 1770 * SDTR negotiation pulled by the target has been 1771 * negotiating. 1772 */ 1773 if (execph & (MSGIN_00_VALID | MSGIN_04_VALID)) { 1774 /* 1775 * If valid message is received, then 1776 * negotiation is succeeded. 1777 */ 1778 } else { 1779 /* 1780 * On the contrary, if unexpected bus free is 1781 * occurred, then negotiation is failed. Fall 1782 * back to ASYNC mode. 1783 */ 1784 nsp32_set_async(data, data->cur_target); 1785 } 1786 data->cur_target->sync_flag &= ~SDTR_TARGET; 1787 data->cur_target->sync_flag |= SDTR_DONE; 1788 } 1789 1790 /* 1791 * It is always ensured by SCSI standard that initiator 1792 * switches into Bus Free Phase after 1793 * receiving message 00 (Command Complete), 04 (Disconnect). 1794 * It's the reason that processing here is valid. 1795 */ 1796 if (execph & MSGIN_00_VALID) { 1797 /* MsgIn 00: Command Complete */ 1798 nsp32_dbg(NSP32_DEBUG_BUSFREE, "command complete"); 1799 1800 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN); 1801 SCpnt->SCp.Message = 0; 1802 nsp32_dbg(NSP32_DEBUG_BUSFREE, 1803 "normal end stat=0x%x resid=0x%x\n", 1804 SCpnt->SCp.Status, SCpnt->resid); 1805 SCpnt->result = (DID_OK << 16) | 1806 (SCpnt->SCp.Message << 8) | 1807 (SCpnt->SCp.Status << 0); 1808 nsp32_scsi_done(SCpnt); 1809 /* All operation is done */ 1810 return TRUE; 1811 } else if (execph & MSGIN_04_VALID) { 1812 /* MsgIn 04: Disconnect */ 1813 SCpnt->SCp.Status = nsp32_read1(base, SCSI_CSB_IN); 1814 SCpnt->SCp.Message = 4; 1815 1816 nsp32_dbg(NSP32_DEBUG_BUSFREE, "disconnect"); 1817 return TRUE; 1818 } else { 1819 /* Unexpected bus free */ 1820 nsp32_msg(KERN_WARNING, "unexpected bus free occurred"); 1821 1822 /* DID_ERROR? */ 1823 //SCpnt->result = (DID_OK << 16) | (SCpnt->SCp.Message << 8) | (SCpnt->SCp.Status << 0); 1824 SCpnt->result = DID_ERROR << 16; 1825 nsp32_scsi_done(SCpnt); 1826 return TRUE; 1827 } 1828 return FALSE; 1829 } 1830 1831 1832 /* 1833 * nsp32_adjust_busfree - adjusting SG table 1834 * 1835 * Note: This driver adjust the SG table using SCSI ACK 1836 * counter instead of BMCNT counter! 1837 */ 1838 static void nsp32_adjust_busfree(struct scsi_cmnd *SCpnt, unsigned int s_sacklen) 1839 { 1840 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 1841 int old_entry = data->cur_entry; 1842 int new_entry; 1843 int sg_num = data->cur_lunt->sg_num; 1844 nsp32_sgtable *sgt = data->cur_lunt->sglun->sgt; 1845 unsigned int restlen, sentlen; 1846 u32_le len, addr; 1847 1848 nsp32_dbg(NSP32_DEBUG_SGLIST, "old resid=0x%x", SCpnt->resid); 1849 1850 /* adjust saved SACK count with 4 byte start address boundary */ 1851 s_sacklen -= le32_to_cpu(sgt[old_entry].addr) & 3; 1852 1853 /* 1854 * calculate new_entry from sack count and each sgt[].len 1855 * calculate the byte which is intent to send 1856 */ 1857 sentlen = 0; 1858 for (new_entry = old_entry; new_entry < sg_num; new_entry++) { 1859 sentlen += (le32_to_cpu(sgt[new_entry].len) & ~SGTEND); 1860 if (sentlen > s_sacklen) { 1861 break; 1862 } 1863 } 1864 1865 /* all sgt is processed */ 1866 if (new_entry == sg_num) { 1867 goto last; 1868 } 1869 1870 if (sentlen == s_sacklen) { 1871 /* XXX: confirm it's ok or not */ 1872 /* In this case, it's ok because we are at 1873 the head element of the sg. restlen is correctly calculated. */ 1874 } 1875 1876 /* calculate the rest length for transfering */ 1877 restlen = sentlen - s_sacklen; 1878 1879 /* update adjusting current SG table entry */ 1880 len = le32_to_cpu(sgt[new_entry].len); 1881 addr = le32_to_cpu(sgt[new_entry].addr); 1882 addr += (len - restlen); 1883 sgt[new_entry].addr = cpu_to_le32(addr); 1884 sgt[new_entry].len = cpu_to_le32(restlen); 1885 1886 /* set cur_entry with new_entry */ 1887 data->cur_entry = new_entry; 1888 1889 return; 1890 1891 last: 1892 if (SCpnt->resid < sentlen) { 1893 nsp32_msg(KERN_ERR, "resid underflow"); 1894 } 1895 1896 SCpnt->resid -= sentlen; 1897 nsp32_dbg(NSP32_DEBUG_SGLIST, "new resid=0x%x", SCpnt->resid); 1898 1899 /* update hostdata and lun */ 1900 1901 return; 1902 } 1903 1904 1905 /* 1906 * It's called MsgOut phase occur. 1907 * NinjaSCSI-32Bi/UDE automatically processes up to 3 messages in 1908 * message out phase. It, however, has more than 3 messages, 1909 * HBA creates the interrupt and we have to process by hand. 1910 */ 1911 static void nsp32_msgout_occur(struct scsi_cmnd *SCpnt) 1912 { 1913 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 1914 unsigned int base = SCpnt->device->host->io_port; 1915 //unsigned short command; 1916 long new_sgtp; 1917 int i; 1918 1919 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, 1920 "enter: msgout_len: 0x%x", data->msgout_len); 1921 1922 /* 1923 * If MsgOut phase is occurred without having any 1924 * message, then No_Operation is sent (SCSI-2). 1925 */ 1926 if (data->msgout_len == 0) { 1927 nsp32_build_nop(SCpnt); 1928 } 1929 1930 /* 1931 * Set SGTP ADDR current entry for restarting AUTOSCSI, 1932 * because SGTP is incremented next point. 1933 * There is few statement in the specification... 1934 */ 1935 new_sgtp = data->cur_lunt->sglun_paddr + 1936 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable)); 1937 1938 /* 1939 * send messages 1940 */ 1941 for (i = 0; i < data->msgout_len; i++) { 1942 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, 1943 "%d : 0x%x", i, data->msgoutbuf[i]); 1944 1945 /* 1946 * Check REQ is asserted. 1947 */ 1948 nsp32_wait_req(data, ASSERT); 1949 1950 if (i == (data->msgout_len - 1)) { 1951 /* 1952 * If the last message, set the AutoSCSI restart 1953 * before send back the ack message. AutoSCSI 1954 * restart automatically negate ATN signal. 1955 */ 1956 //command = (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02); 1957 //nsp32_restart_autoscsi(SCpnt, command); 1958 nsp32_write2(base, COMMAND_CONTROL, 1959 (CLEAR_CDB_FIFO_POINTER | 1960 AUTO_COMMAND_PHASE | 1961 AUTOSCSI_RESTART | 1962 AUTO_MSGIN_00_OR_04 | 1963 AUTO_MSGIN_02 )); 1964 } 1965 /* 1966 * Write data with SACK, then wait sack is 1967 * automatically negated. 1968 */ 1969 nsp32_write1(base, SCSI_DATA_WITH_ACK, data->msgoutbuf[i]); 1970 nsp32_wait_sack(data, NEGATE); 1971 1972 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "bus: 0x%x\n", 1973 nsp32_read1(base, SCSI_BUS_MONITOR)); 1974 }; 1975 1976 data->msgout_len = 0; 1977 1978 nsp32_dbg(NSP32_DEBUG_MSGOUTOCCUR, "exit"); 1979 } 1980 1981 /* 1982 * Restart AutoSCSI 1983 * 1984 * Note: Restarting AutoSCSI needs set: 1985 * SYNC_REG, ACK_WIDTH, SGT_ADR, TRANSFER_CONTROL 1986 */ 1987 static void nsp32_restart_autoscsi(struct scsi_cmnd *SCpnt, unsigned short command) 1988 { 1989 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 1990 unsigned int base = data->BaseAddress; 1991 unsigned short transfer = 0; 1992 1993 nsp32_dbg(NSP32_DEBUG_RESTART, "enter"); 1994 1995 if (data->cur_target == NULL || data->cur_lunt == NULL) { 1996 nsp32_msg(KERN_ERR, "Target or Lun is invalid"); 1997 } 1998 1999 /* 2000 * set SYNC_REG 2001 * Don't set BM_START_ADR before setting this register. 2002 */ 2003 nsp32_write1(base, SYNC_REG, data->cur_target->syncreg); 2004 2005 /* 2006 * set ACKWIDTH 2007 */ 2008 nsp32_write1(base, ACK_WIDTH, data->cur_target->ackwidth); 2009 2010 /* 2011 * set SREQ hazard killer sampling rate 2012 */ 2013 nsp32_write1(base, SREQ_SMPL_RATE, data->cur_target->sample_reg); 2014 2015 /* 2016 * set SGT ADDR (physical address) 2017 */ 2018 nsp32_write4(base, SGT_ADR, data->cur_lunt->sglun_paddr); 2019 2020 /* 2021 * set TRANSFER CONTROL REG 2022 */ 2023 transfer = 0; 2024 transfer |= (TRANSFER_GO | ALL_COUNTER_CLR); 2025 if (data->trans_method & NSP32_TRANSFER_BUSMASTER) { 2026 if (SCpnt->request_bufflen > 0) { 2027 transfer |= BM_START; 2028 } 2029 } else if (data->trans_method & NSP32_TRANSFER_MMIO) { 2030 transfer |= CB_MMIO_MODE; 2031 } else if (data->trans_method & NSP32_TRANSFER_PIO) { 2032 transfer |= CB_IO_MODE; 2033 } 2034 nsp32_write2(base, TRANSFER_CONTROL, transfer); 2035 2036 /* 2037 * restart AutoSCSI 2038 * 2039 * TODO: COMMANDCONTROL_AUTO_COMMAND_PHASE is needed ? 2040 */ 2041 command |= (CLEAR_CDB_FIFO_POINTER | 2042 AUTO_COMMAND_PHASE | 2043 AUTOSCSI_RESTART ); 2044 nsp32_write2(base, COMMAND_CONTROL, command); 2045 2046 nsp32_dbg(NSP32_DEBUG_RESTART, "exit"); 2047 } 2048 2049 2050 /* 2051 * cannot run automatically message in occur 2052 */ 2053 static void nsp32_msgin_occur(struct scsi_cmnd *SCpnt, 2054 unsigned long irq_status, 2055 unsigned short execph) 2056 { 2057 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 2058 unsigned int base = SCpnt->device->host->io_port; 2059 unsigned char msg; 2060 unsigned char msgtype; 2061 unsigned char newlun; 2062 unsigned short command = 0; 2063 int msgclear = TRUE; 2064 long new_sgtp; 2065 int ret; 2066 2067 /* 2068 * read first message 2069 * Use SCSIDATA_W_ACK instead of SCSIDATAIN, because the procedure 2070 * of Message-In have to be processed before sending back SCSI ACK. 2071 */ 2072 msg = nsp32_read1(base, SCSI_DATA_IN); 2073 data->msginbuf[(unsigned char)data->msgin_len] = msg; 2074 msgtype = data->msginbuf[0]; 2075 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, 2076 "enter: msglen: 0x%x msgin: 0x%x msgtype: 0x%x", 2077 data->msgin_len, msg, msgtype); 2078 2079 /* 2080 * TODO: We need checking whether bus phase is message in? 2081 */ 2082 2083 /* 2084 * assert SCSI ACK 2085 */ 2086 nsp32_sack_assert(data); 2087 2088 /* 2089 * processing IDENTIFY 2090 */ 2091 if (msgtype & 0x80) { 2092 if (!(irq_status & IRQSTATUS_RESELECT_OCCUER)) { 2093 /* Invalid (non reselect) phase */ 2094 goto reject; 2095 } 2096 2097 newlun = msgtype & 0x1f; /* TODO: SPI-3 compliant? */ 2098 ret = nsp32_reselection(SCpnt, newlun); 2099 if (ret == TRUE) { 2100 goto restart; 2101 } else { 2102 goto reject; 2103 } 2104 } 2105 2106 /* 2107 * processing messages except for IDENTIFY 2108 * 2109 * TODO: Messages are all SCSI-2 terminology. SCSI-3 compliance is TODO. 2110 */ 2111 switch (msgtype) { 2112 /* 2113 * 1-byte message 2114 */ 2115 case COMMAND_COMPLETE: 2116 case DISCONNECT: 2117 /* 2118 * These messages should not be occurred. 2119 * They should be processed on AutoSCSI sequencer. 2120 */ 2121 nsp32_msg(KERN_WARNING, 2122 "unexpected message of AutoSCSI MsgIn: 0x%x", msg); 2123 break; 2124 2125 case RESTORE_POINTERS: 2126 /* 2127 * AutoMsgIn03 is disabled, and HBA gets this message. 2128 */ 2129 2130 if ((execph & DATA_IN_PHASE) || (execph & DATA_OUT_PHASE)) { 2131 unsigned int s_sacklen; 2132 2133 s_sacklen = nsp32_read4(base, SAVED_SACK_CNT); 2134 if ((execph & MSGIN_02_VALID) && (s_sacklen > 0)) { 2135 nsp32_adjust_busfree(SCpnt, s_sacklen); 2136 } else { 2137 /* No need to rewrite SGT */ 2138 } 2139 } 2140 data->cur_lunt->msgin03 = FALSE; 2141 2142 /* Update with the new value */ 2143 2144 /* reset SACK/SavedACK counter (or ALL clear?) */ 2145 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); 2146 2147 /* 2148 * set new sg pointer 2149 */ 2150 new_sgtp = data->cur_lunt->sglun_paddr + 2151 (data->cur_lunt->cur_entry * sizeof(nsp32_sgtable)); 2152 nsp32_write4(base, SGT_ADR, new_sgtp); 2153 2154 break; 2155 2156 case SAVE_POINTERS: 2157 /* 2158 * These messages should not be occurred. 2159 * They should be processed on AutoSCSI sequencer. 2160 */ 2161 nsp32_msg (KERN_WARNING, 2162 "unexpected message of AutoSCSI MsgIn: SAVE_POINTERS"); 2163 2164 break; 2165 2166 case MESSAGE_REJECT: 2167 /* If previous message_out is sending SDTR, and get 2168 message_reject from target, SDTR negotiation is failed */ 2169 if (data->cur_target->sync_flag & 2170 (SDTR_INITIATOR | SDTR_TARGET)) { 2171 /* 2172 * Current target is negotiating SDTR, but it's 2173 * failed. Fall back to async transfer mode, and set 2174 * SDTR_DONE. 2175 */ 2176 nsp32_set_async(data, data->cur_target); 2177 data->cur_target->sync_flag &= ~SDTR_INITIATOR; 2178 data->cur_target->sync_flag |= SDTR_DONE; 2179 2180 } 2181 break; 2182 2183 case LINKED_CMD_COMPLETE: 2184 case LINKED_FLG_CMD_COMPLETE: 2185 /* queue tag is not supported currently */ 2186 nsp32_msg (KERN_WARNING, 2187 "unsupported message: 0x%x", msgtype); 2188 break; 2189 2190 case INITIATE_RECOVERY: 2191 /* staring ECA (Extended Contingent Allegiance) state. */ 2192 /* This message is declined in SPI2 or later. */ 2193 2194 goto reject; 2195 2196 /* 2197 * 2-byte message 2198 */ 2199 case SIMPLE_QUEUE_TAG: 2200 case 0x23: 2201 /* 2202 * 0x23: Ignore_Wide_Residue is not declared in scsi.h. 2203 * No support is needed. 2204 */ 2205 if (data->msgin_len >= 1) { 2206 goto reject; 2207 } 2208 2209 /* current position is 1-byte of 2 byte */ 2210 msgclear = FALSE; 2211 2212 break; 2213 2214 /* 2215 * extended message 2216 */ 2217 case EXTENDED_MESSAGE: 2218 if (data->msgin_len < 1) { 2219 /* 2220 * Current position does not reach 2-byte 2221 * (2-byte is extended message length). 2222 */ 2223 msgclear = FALSE; 2224 break; 2225 } 2226 2227 if ((data->msginbuf[1] + 1) > data->msgin_len) { 2228 /* 2229 * Current extended message has msginbuf[1] + 2 2230 * (msgin_len starts counting from 0, so buf[1] + 1). 2231 * If current message position is not finished, 2232 * continue receiving message. 2233 */ 2234 msgclear = FALSE; 2235 break; 2236 } 2237 2238 /* 2239 * Reach here means regular length of each type of 2240 * extended messages. 2241 */ 2242 switch (data->msginbuf[2]) { 2243 case EXTENDED_MODIFY_DATA_POINTER: 2244 /* TODO */ 2245 goto reject; /* not implemented yet */ 2246 break; 2247 2248 case EXTENDED_SDTR: 2249 /* 2250 * Exchange this message between initiator and target. 2251 */ 2252 if (data->msgin_len != EXTENDED_SDTR_LEN + 1) { 2253 /* 2254 * received inappropriate message. 2255 */ 2256 goto reject; 2257 break; 2258 } 2259 2260 nsp32_analyze_sdtr(SCpnt); 2261 2262 break; 2263 2264 case EXTENDED_EXTENDED_IDENTIFY: 2265 /* SCSI-I only, not supported. */ 2266 goto reject; /* not implemented yet */ 2267 2268 break; 2269 2270 case EXTENDED_WDTR: 2271 goto reject; /* not implemented yet */ 2272 2273 break; 2274 2275 default: 2276 goto reject; 2277 } 2278 break; 2279 2280 default: 2281 goto reject; 2282 } 2283 2284 restart: 2285 if (msgclear == TRUE) { 2286 data->msgin_len = 0; 2287 2288 /* 2289 * If restarting AutoSCSI, but there are some message to out 2290 * (msgout_len > 0), set AutoATN, and set SCSIMSGOUT as 0 2291 * (MV_VALID = 0). When commandcontrol is written with 2292 * AutoSCSI restart, at the same time MsgOutOccur should be 2293 * happened (however, such situation is really possible...?). 2294 */ 2295 if (data->msgout_len > 0) { 2296 nsp32_write4(base, SCSI_MSG_OUT, 0); 2297 command |= AUTO_ATN; 2298 } 2299 2300 /* 2301 * restart AutoSCSI 2302 * If it's failed, COMMANDCONTROL_AUTO_COMMAND_PHASE is needed. 2303 */ 2304 command |= (AUTO_MSGIN_00_OR_04 | AUTO_MSGIN_02); 2305 2306 /* 2307 * If current msgin03 is TRUE, then flag on. 2308 */ 2309 if (data->cur_lunt->msgin03 == TRUE) { 2310 command |= AUTO_MSGIN_03; 2311 } 2312 data->cur_lunt->msgin03 = FALSE; 2313 } else { 2314 data->msgin_len++; 2315 } 2316 2317 /* 2318 * restart AutoSCSI 2319 */ 2320 nsp32_restart_autoscsi(SCpnt, command); 2321 2322 /* 2323 * wait SCSI REQ negate for REQ-ACK handshake 2324 */ 2325 nsp32_wait_req(data, NEGATE); 2326 2327 /* 2328 * negate SCSI ACK 2329 */ 2330 nsp32_sack_negate(data); 2331 2332 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit"); 2333 2334 return; 2335 2336 reject: 2337 nsp32_msg(KERN_WARNING, 2338 "invalid or unsupported MessageIn, rejected. " 2339 "current msg: 0x%x (len: 0x%x), processing msg: 0x%x", 2340 msg, data->msgin_len, msgtype); 2341 nsp32_build_reject(SCpnt); 2342 data->msgin_len = 0; 2343 2344 goto restart; 2345 } 2346 2347 /* 2348 * 2349 */ 2350 static void nsp32_analyze_sdtr(struct scsi_cmnd *SCpnt) 2351 { 2352 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 2353 nsp32_target *target = data->cur_target; 2354 nsp32_sync_table *synct; 2355 unsigned char get_period = data->msginbuf[3]; 2356 unsigned char get_offset = data->msginbuf[4]; 2357 int entry; 2358 int syncnum; 2359 2360 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "enter"); 2361 2362 synct = data->synct; 2363 syncnum = data->syncnum; 2364 2365 /* 2366 * If this inititor sent the SDTR message, then target responds SDTR, 2367 * initiator SYNCREG, ACKWIDTH from SDTR parameter. 2368 * Messages are not appropriate, then send back reject message. 2369 * If initiator did not send the SDTR, but target sends SDTR, 2370 * initiator calculator the appropriate parameter and send back SDTR. 2371 */ 2372 if (target->sync_flag & SDTR_INITIATOR) { 2373 /* 2374 * Initiator sent SDTR, the target responds and 2375 * send back negotiation SDTR. 2376 */ 2377 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target responds SDTR"); 2378 2379 target->sync_flag &= ~SDTR_INITIATOR; 2380 target->sync_flag |= SDTR_DONE; 2381 2382 /* 2383 * offset: 2384 */ 2385 if (get_offset > SYNC_OFFSET) { 2386 /* 2387 * Negotiation is failed, the target send back 2388 * unexpected offset value. 2389 */ 2390 goto reject; 2391 } 2392 2393 if (get_offset == ASYNC_OFFSET) { 2394 /* 2395 * Negotiation is succeeded, the target want 2396 * to fall back into asynchronous transfer mode. 2397 */ 2398 goto async; 2399 } 2400 2401 /* 2402 * period: 2403 * Check whether sync period is too short. If too short, 2404 * fall back to async mode. If it's ok, then investigate 2405 * the received sync period. If sync period is acceptable 2406 * between sync table start_period and end_period, then 2407 * set this I_T nexus as sent offset and period. 2408 * If it's not acceptable, send back reject and fall back 2409 * to async mode. 2410 */ 2411 if (get_period < data->synct[0].period_num) { 2412 /* 2413 * Negotiation is failed, the target send back 2414 * unexpected period value. 2415 */ 2416 goto reject; 2417 } 2418 2419 entry = nsp32_search_period_entry(data, target, get_period); 2420 2421 if (entry < 0) { 2422 /* 2423 * Target want to use long period which is not 2424 * acceptable NinjaSCSI-32Bi/UDE. 2425 */ 2426 goto reject; 2427 } 2428 2429 /* 2430 * Set new sync table and offset in this I_T nexus. 2431 */ 2432 nsp32_set_sync_entry(data, target, entry, get_offset); 2433 } else { 2434 /* Target send SDTR to initiator. */ 2435 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "target send SDTR"); 2436 2437 target->sync_flag |= SDTR_INITIATOR; 2438 2439 /* offset: */ 2440 if (get_offset > SYNC_OFFSET) { 2441 /* send back as SYNC_OFFSET */ 2442 get_offset = SYNC_OFFSET; 2443 } 2444 2445 /* period: */ 2446 if (get_period < data->synct[0].period_num) { 2447 get_period = data->synct[0].period_num; 2448 } 2449 2450 entry = nsp32_search_period_entry(data, target, get_period); 2451 2452 if (get_offset == ASYNC_OFFSET || entry < 0) { 2453 nsp32_set_async(data, target); 2454 nsp32_build_sdtr(SCpnt, 0, ASYNC_OFFSET); 2455 } else { 2456 nsp32_set_sync_entry(data, target, entry, get_offset); 2457 nsp32_build_sdtr(SCpnt, get_period, get_offset); 2458 } 2459 } 2460 2461 target->period = get_period; 2462 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit"); 2463 return; 2464 2465 reject: 2466 /* 2467 * If the current message is unacceptable, send back to the target 2468 * with reject message. 2469 */ 2470 nsp32_build_reject(SCpnt); 2471 2472 async: 2473 nsp32_set_async(data, target); /* set as ASYNC transfer mode */ 2474 2475 target->period = 0; 2476 nsp32_dbg(NSP32_DEBUG_MSGINOCCUR, "exit: set async"); 2477 return; 2478 } 2479 2480 2481 /* 2482 * Search config entry number matched in sync_table from given 2483 * target and speed period value. If failed to search, return negative value. 2484 */ 2485 static int nsp32_search_period_entry(nsp32_hw_data *data, 2486 nsp32_target *target, 2487 unsigned char period) 2488 { 2489 int i; 2490 2491 if (target->limit_entry >= data->syncnum) { 2492 nsp32_msg(KERN_ERR, "limit_entry exceeds syncnum!"); 2493 target->limit_entry = 0; 2494 } 2495 2496 for (i = target->limit_entry; i < data->syncnum; i++) { 2497 if (period >= data->synct[i].start_period && 2498 period <= data->synct[i].end_period) { 2499 break; 2500 } 2501 } 2502 2503 /* 2504 * Check given period value is over the sync_table value. 2505 * If so, return max value. 2506 */ 2507 if (i == data->syncnum) { 2508 i = -1; 2509 } 2510 2511 return i; 2512 } 2513 2514 2515 /* 2516 * target <-> initiator use ASYNC transfer 2517 */ 2518 static void nsp32_set_async(nsp32_hw_data *data, nsp32_target *target) 2519 { 2520 unsigned char period = data->synct[target->limit_entry].period_num; 2521 2522 target->offset = ASYNC_OFFSET; 2523 target->period = 0; 2524 target->syncreg = TO_SYNCREG(period, ASYNC_OFFSET); 2525 target->ackwidth = 0; 2526 target->sample_reg = 0; 2527 2528 nsp32_dbg(NSP32_DEBUG_SYNC, "set async"); 2529 } 2530 2531 2532 /* 2533 * target <-> initiator use maximum SYNC transfer 2534 */ 2535 static void nsp32_set_max_sync(nsp32_hw_data *data, 2536 nsp32_target *target, 2537 unsigned char *period, 2538 unsigned char *offset) 2539 { 2540 unsigned char period_num, ackwidth; 2541 2542 period_num = data->synct[target->limit_entry].period_num; 2543 *period = data->synct[target->limit_entry].start_period; 2544 ackwidth = data->synct[target->limit_entry].ackwidth; 2545 *offset = SYNC_OFFSET; 2546 2547 target->syncreg = TO_SYNCREG(period_num, *offset); 2548 target->ackwidth = ackwidth; 2549 target->offset = *offset; 2550 target->sample_reg = 0; /* disable SREQ sampling */ 2551 } 2552 2553 2554 /* 2555 * target <-> initiator use entry number speed 2556 */ 2557 static void nsp32_set_sync_entry(nsp32_hw_data *data, 2558 nsp32_target *target, 2559 int entry, 2560 unsigned char offset) 2561 { 2562 unsigned char period, ackwidth, sample_rate; 2563 2564 period = data->synct[entry].period_num; 2565 ackwidth = data->synct[entry].ackwidth; 2566 offset = offset; 2567 sample_rate = data->synct[entry].sample_rate; 2568 2569 target->syncreg = TO_SYNCREG(period, offset); 2570 target->ackwidth = ackwidth; 2571 target->offset = offset; 2572 target->sample_reg = sample_rate | SAMPLING_ENABLE; 2573 2574 nsp32_dbg(NSP32_DEBUG_SYNC, "set sync"); 2575 } 2576 2577 2578 /* 2579 * It waits until SCSI REQ becomes assertion or negation state. 2580 * 2581 * Note: If nsp32_msgin_occur is called, we asserts SCSI ACK. Then 2582 * connected target responds SCSI REQ negation. We have to wait 2583 * SCSI REQ becomes negation in order to negate SCSI ACK signal for 2584 * REQ-ACK handshake. 2585 */ 2586 static void nsp32_wait_req(nsp32_hw_data *data, int state) 2587 { 2588 unsigned int base = data->BaseAddress; 2589 int wait_time = 0; 2590 unsigned char bus, req_bit; 2591 2592 if (!((state == ASSERT) || (state == NEGATE))) { 2593 nsp32_msg(KERN_ERR, "unknown state designation"); 2594 } 2595 /* REQ is BIT(5) */ 2596 req_bit = (state == ASSERT ? BUSMON_REQ : 0); 2597 2598 do { 2599 bus = nsp32_read1(base, SCSI_BUS_MONITOR); 2600 if ((bus & BUSMON_REQ) == req_bit) { 2601 nsp32_dbg(NSP32_DEBUG_WAIT, 2602 "wait_time: %d", wait_time); 2603 return; 2604 } 2605 udelay(1); 2606 wait_time++; 2607 } while (wait_time < REQSACK_TIMEOUT_TIME); 2608 2609 nsp32_msg(KERN_WARNING, "wait REQ timeout, req_bit: 0x%x", req_bit); 2610 } 2611 2612 /* 2613 * It waits until SCSI SACK becomes assertion or negation state. 2614 */ 2615 static void nsp32_wait_sack(nsp32_hw_data *data, int state) 2616 { 2617 unsigned int base = data->BaseAddress; 2618 int wait_time = 0; 2619 unsigned char bus, ack_bit; 2620 2621 if (!((state == ASSERT) || (state == NEGATE))) { 2622 nsp32_msg(KERN_ERR, "unknown state designation"); 2623 } 2624 /* ACK is BIT(4) */ 2625 ack_bit = (state == ASSERT ? BUSMON_ACK : 0); 2626 2627 do { 2628 bus = nsp32_read1(base, SCSI_BUS_MONITOR); 2629 if ((bus & BUSMON_ACK) == ack_bit) { 2630 nsp32_dbg(NSP32_DEBUG_WAIT, 2631 "wait_time: %d", wait_time); 2632 return; 2633 } 2634 udelay(1); 2635 wait_time++; 2636 } while (wait_time < REQSACK_TIMEOUT_TIME); 2637 2638 nsp32_msg(KERN_WARNING, "wait SACK timeout, ack_bit: 0x%x", ack_bit); 2639 } 2640 2641 /* 2642 * assert SCSI ACK 2643 * 2644 * Note: SCSI ACK assertion needs with ACKENB=1, AUTODIRECTION=1. 2645 */ 2646 static void nsp32_sack_assert(nsp32_hw_data *data) 2647 { 2648 unsigned int base = data->BaseAddress; 2649 unsigned char busctrl; 2650 2651 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL); 2652 busctrl |= (BUSCTL_ACK | AUTODIRECTION | ACKENB); 2653 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl); 2654 } 2655 2656 /* 2657 * negate SCSI ACK 2658 */ 2659 static void nsp32_sack_negate(nsp32_hw_data *data) 2660 { 2661 unsigned int base = data->BaseAddress; 2662 unsigned char busctrl; 2663 2664 busctrl = nsp32_read1(base, SCSI_BUS_CONTROL); 2665 busctrl &= ~BUSCTL_ACK; 2666 nsp32_write1(base, SCSI_BUS_CONTROL, busctrl); 2667 } 2668 2669 2670 2671 /* 2672 * Note: n_io_port is defined as 0x7f because I/O register port is 2673 * assigned as: 2674 * 0x800-0x8ff: memory mapped I/O port 2675 * 0x900-0xbff: (map same 0x800-0x8ff I/O port image repeatedly) 2676 * 0xc00-0xfff: CardBus status registers 2677 */ 2678 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 2679 #define DETECT_OK 0 2680 #define DETECT_NG 1 2681 #define PCIDEV pdev 2682 static int nsp32_detect(struct pci_dev *pdev) 2683 #else 2684 #define DETECT_OK 1 2685 #define DETECT_NG 0 2686 #define PCIDEV (data->Pci) 2687 static int nsp32_detect(struct scsi_host_template *sht) 2688 #endif 2689 { 2690 struct Scsi_Host *host; /* registered host structure */ 2691 struct resource *res; 2692 nsp32_hw_data *data; 2693 int ret; 2694 int i, j; 2695 2696 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); 2697 2698 /* 2699 * register this HBA as SCSI device 2700 */ 2701 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 2702 host = scsi_host_alloc(&nsp32_template, sizeof(nsp32_hw_data)); 2703 #else 2704 host = scsi_register(sht, sizeof(nsp32_hw_data)); 2705 #endif 2706 if (host == NULL) { 2707 nsp32_msg (KERN_ERR, "failed to scsi register"); 2708 goto err; 2709 } 2710 2711 /* 2712 * set nsp32_hw_data 2713 */ 2714 data = (nsp32_hw_data *)host->hostdata; 2715 2716 memcpy(data, &nsp32_data_base, sizeof(nsp32_hw_data)); 2717 2718 host->irq = data->IrqNumber; 2719 host->io_port = data->BaseAddress; 2720 host->unique_id = data->BaseAddress; 2721 host->n_io_port = data->NumAddress; 2722 host->base = (unsigned long)data->MmioAddress; 2723 #if (LINUX_VERSION_CODE <= KERNEL_VERSION(2,5,63)) 2724 scsi_set_pci_device(host, PCIDEV); 2725 #endif 2726 2727 data->Host = host; 2728 spin_lock_init(&(data->Lock)); 2729 2730 data->cur_lunt = NULL; 2731 data->cur_target = NULL; 2732 2733 /* 2734 * Bus master transfer mode is supported currently. 2735 */ 2736 data->trans_method = NSP32_TRANSFER_BUSMASTER; 2737 2738 /* 2739 * Set clock div, CLOCK_4 (HBA has own external clock, and 2740 * dividing * 100ns/4). 2741 * Currently CLOCK_4 has only tested, not for CLOCK_2/PCICLK yet. 2742 */ 2743 data->clock = CLOCK_4; 2744 2745 /* 2746 * Select appropriate nsp32_sync_table and set I_CLOCKDIV. 2747 */ 2748 switch (data->clock) { 2749 case CLOCK_4: 2750 /* If data->clock is CLOCK_4, then select 40M sync table. */ 2751 data->synct = nsp32_sync_table_40M; 2752 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M); 2753 break; 2754 case CLOCK_2: 2755 /* If data->clock is CLOCK_2, then select 20M sync table. */ 2756 data->synct = nsp32_sync_table_20M; 2757 data->syncnum = ARRAY_SIZE(nsp32_sync_table_20M); 2758 break; 2759 case PCICLK: 2760 /* If data->clock is PCICLK, then select pci sync table. */ 2761 data->synct = nsp32_sync_table_pci; 2762 data->syncnum = ARRAY_SIZE(nsp32_sync_table_pci); 2763 break; 2764 default: 2765 nsp32_msg(KERN_WARNING, 2766 "Invalid clock div is selected, set CLOCK_4."); 2767 /* Use default value CLOCK_4 */ 2768 data->clock = CLOCK_4; 2769 data->synct = nsp32_sync_table_40M; 2770 data->syncnum = ARRAY_SIZE(nsp32_sync_table_40M); 2771 } 2772 2773 /* 2774 * setup nsp32_lunt 2775 */ 2776 2777 /* 2778 * setup DMA 2779 */ 2780 if (pci_set_dma_mask(PCIDEV, DMA_32BIT_MASK) != 0) { 2781 nsp32_msg (KERN_ERR, "failed to set PCI DMA mask"); 2782 goto scsi_unregister; 2783 } 2784 2785 /* 2786 * allocate autoparam DMA resource. 2787 */ 2788 data->autoparam = pci_alloc_consistent(PCIDEV, sizeof(nsp32_autoparam), &(data->auto_paddr)); 2789 if (data->autoparam == NULL) { 2790 nsp32_msg(KERN_ERR, "failed to allocate DMA memory"); 2791 goto scsi_unregister; 2792 } 2793 2794 /* 2795 * allocate scatter-gather DMA resource. 2796 */ 2797 data->sg_list = pci_alloc_consistent(PCIDEV, NSP32_SG_TABLE_SIZE, 2798 &(data->sg_paddr)); 2799 if (data->sg_list == NULL) { 2800 nsp32_msg(KERN_ERR, "failed to allocate DMA memory"); 2801 goto free_autoparam; 2802 } 2803 2804 for (i = 0; i < ARRAY_SIZE(data->lunt); i++) { 2805 for (j = 0; j < ARRAY_SIZE(data->lunt[0]); j++) { 2806 int offset = i * ARRAY_SIZE(data->lunt[0]) + j; 2807 nsp32_lunt tmp = { 2808 .SCpnt = NULL, 2809 .save_datp = 0, 2810 .msgin03 = FALSE, 2811 .sg_num = 0, 2812 .cur_entry = 0, 2813 .sglun = &(data->sg_list[offset]), 2814 .sglun_paddr = data->sg_paddr + (offset * sizeof(nsp32_sglun)), 2815 }; 2816 2817 data->lunt[i][j] = tmp; 2818 } 2819 } 2820 2821 /* 2822 * setup target 2823 */ 2824 for (i = 0; i < ARRAY_SIZE(data->target); i++) { 2825 nsp32_target *target = &(data->target[i]); 2826 2827 target->limit_entry = 0; 2828 target->sync_flag = 0; 2829 nsp32_set_async(data, target); 2830 } 2831 2832 /* 2833 * EEPROM check 2834 */ 2835 ret = nsp32_getprom_param(data); 2836 if (ret == FALSE) { 2837 data->resettime = 3; /* default 3 */ 2838 } 2839 2840 /* 2841 * setup HBA 2842 */ 2843 nsp32hw_init(data); 2844 2845 snprintf(data->info_str, sizeof(data->info_str), 2846 "NinjaSCSI-32Bi/UDE: irq %d, io 0x%lx+0x%x", 2847 host->irq, host->io_port, host->n_io_port); 2848 2849 /* 2850 * SCSI bus reset 2851 * 2852 * Note: It's important to reset SCSI bus in initialization phase. 2853 * NinjaSCSI-32Bi/UDE HBA EEPROM seems to exchange SDTR when 2854 * system is coming up, so SCSI devices connected to HBA is set as 2855 * un-asynchronous mode. It brings the merit that this HBA is 2856 * ready to start synchronous transfer without any preparation, 2857 * but we are difficult to control transfer speed. In addition, 2858 * it prevents device transfer speed from effecting EEPROM start-up 2859 * SDTR. NinjaSCSI-32Bi/UDE has the feature if EEPROM is set as 2860 * Auto Mode, then FAST-10M is selected when SCSI devices are 2861 * connected same or more than 4 devices. It should be avoided 2862 * depending on this specification. Thus, resetting the SCSI bus 2863 * restores all connected SCSI devices to asynchronous mode, then 2864 * this driver set SDTR safely later, and we can control all SCSI 2865 * device transfer mode. 2866 */ 2867 nsp32_do_bus_reset(data); 2868 2869 ret = request_irq(host->irq, do_nsp32_isr, 2870 SA_SHIRQ | SA_SAMPLE_RANDOM, "nsp32", data); 2871 if (ret < 0) { 2872 nsp32_msg(KERN_ERR, "Unable to allocate IRQ for NinjaSCSI32 " 2873 "SCSI PCI controller. Interrupt: %d", host->irq); 2874 goto free_sg_list; 2875 } 2876 2877 /* 2878 * PCI IO register 2879 */ 2880 res = request_region(host->io_port, host->n_io_port, "nsp32"); 2881 if (res == NULL) { 2882 nsp32_msg(KERN_ERR, 2883 "I/O region 0x%lx+0x%lx is already used", 2884 data->BaseAddress, data->NumAddress); 2885 goto free_irq; 2886 } 2887 2888 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 2889 scsi_add_host (host, &PCIDEV->dev); 2890 scsi_scan_host(host); 2891 #endif 2892 pci_set_drvdata(PCIDEV, host); 2893 return DETECT_OK; 2894 2895 free_irq: 2896 free_irq(host->irq, data); 2897 2898 free_sg_list: 2899 pci_free_consistent(PCIDEV, NSP32_SG_TABLE_SIZE, 2900 data->sg_list, data->sg_paddr); 2901 2902 free_autoparam: 2903 pci_free_consistent(PCIDEV, sizeof(nsp32_autoparam), 2904 data->autoparam, data->auto_paddr); 2905 2906 scsi_unregister: 2907 scsi_host_put(host); 2908 2909 err: 2910 return DETECT_NG; 2911 } 2912 #undef DETECT_OK 2913 #undef DETECT_NG 2914 #undef PCIDEV 2915 2916 static int nsp32_release(struct Scsi_Host *host) 2917 { 2918 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; 2919 2920 if (data->autoparam) { 2921 pci_free_consistent(data->Pci, sizeof(nsp32_autoparam), 2922 data->autoparam, data->auto_paddr); 2923 } 2924 2925 if (data->sg_list) { 2926 pci_free_consistent(data->Pci, NSP32_SG_TABLE_SIZE, 2927 data->sg_list, data->sg_paddr); 2928 } 2929 2930 if (host->irq) { 2931 free_irq(host->irq, data); 2932 } 2933 2934 if (host->io_port && host->n_io_port) { 2935 release_region(host->io_port, host->n_io_port); 2936 } 2937 2938 if (data->MmioAddress) { 2939 iounmap(data->MmioAddress); 2940 } 2941 2942 return 0; 2943 } 2944 2945 static const char *nsp32_info(struct Scsi_Host *shpnt) 2946 { 2947 nsp32_hw_data *data = (nsp32_hw_data *)shpnt->hostdata; 2948 2949 return data->info_str; 2950 } 2951 2952 2953 /**************************************************************************** 2954 * error handler 2955 */ 2956 static int nsp32_eh_abort(struct scsi_cmnd *SCpnt) 2957 { 2958 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 2959 unsigned int base = SCpnt->device->host->io_port; 2960 2961 nsp32_msg(KERN_WARNING, "abort"); 2962 2963 if (data->cur_lunt->SCpnt == NULL) { 2964 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort failed"); 2965 return FAILED; 2966 } 2967 2968 if (data->cur_target->sync_flag & (SDTR_INITIATOR | SDTR_TARGET)) { 2969 /* reset SDTR negotiation */ 2970 data->cur_target->sync_flag = 0; 2971 nsp32_set_async(data, data->cur_target); 2972 } 2973 2974 nsp32_write2(base, TRANSFER_CONTROL, 0); 2975 nsp32_write2(base, BM_CNT, 0); 2976 2977 SCpnt->result = DID_ABORT << 16; 2978 nsp32_scsi_done(SCpnt); 2979 2980 nsp32_dbg(NSP32_DEBUG_BUSRESET, "abort success"); 2981 return SUCCESS; 2982 } 2983 2984 static int nsp32_eh_bus_reset(struct scsi_cmnd *SCpnt) 2985 { 2986 nsp32_hw_data *data = (nsp32_hw_data *)SCpnt->device->host->hostdata; 2987 unsigned int base = SCpnt->device->host->io_port; 2988 2989 spin_lock_irq(SCpnt->device->host->host_lock); 2990 2991 nsp32_msg(KERN_INFO, "Bus Reset"); 2992 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt); 2993 2994 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); 2995 nsp32_do_bus_reset(data); 2996 nsp32_write2(base, IRQ_CONTROL, 0); 2997 2998 spin_unlock_irq(SCpnt->device->host->host_lock); 2999 return SUCCESS; /* SCSI bus reset is succeeded at any time. */ 3000 } 3001 3002 static void nsp32_do_bus_reset(nsp32_hw_data *data) 3003 { 3004 unsigned int base = data->BaseAddress; 3005 unsigned short intrdat; 3006 int i; 3007 3008 nsp32_dbg(NSP32_DEBUG_BUSRESET, "in"); 3009 3010 /* 3011 * stop all transfer 3012 * clear TRANSFERCONTROL_BM_START 3013 * clear counter 3014 */ 3015 nsp32_write2(base, TRANSFER_CONTROL, 0); 3016 nsp32_write4(base, BM_CNT, 0); 3017 nsp32_write4(base, CLR_COUNTER, CLRCOUNTER_ALLMASK); 3018 3019 /* 3020 * fall back to asynchronous transfer mode 3021 * initialize SDTR negotiation flag 3022 */ 3023 for (i = 0; i < ARRAY_SIZE(data->target); i++) { 3024 nsp32_target *target = &data->target[i]; 3025 3026 target->sync_flag = 0; 3027 nsp32_set_async(data, target); 3028 } 3029 3030 /* 3031 * reset SCSI bus 3032 */ 3033 nsp32_write1(base, SCSI_BUS_CONTROL, BUSCTL_RST); 3034 udelay(RESET_HOLD_TIME); 3035 nsp32_write1(base, SCSI_BUS_CONTROL, 0); 3036 for(i = 0; i < 5; i++) { 3037 intrdat = nsp32_read2(base, IRQ_STATUS); /* dummy read */ 3038 nsp32_dbg(NSP32_DEBUG_BUSRESET, "irq:1: 0x%x", intrdat); 3039 } 3040 3041 data->CurrentSC = NULL; 3042 } 3043 3044 static int nsp32_eh_host_reset(struct scsi_cmnd *SCpnt) 3045 { 3046 struct Scsi_Host *host = SCpnt->device->host; 3047 unsigned int base = SCpnt->device->host->io_port; 3048 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; 3049 3050 nsp32_msg(KERN_INFO, "Host Reset"); 3051 nsp32_dbg(NSP32_DEBUG_BUSRESET, "SCpnt=0x%x", SCpnt); 3052 3053 spin_lock_irq(SCpnt->device->host->host_lock); 3054 3055 nsp32hw_init(data); 3056 nsp32_write2(base, IRQ_CONTROL, IRQ_CONTROL_ALL_IRQ_MASK); 3057 nsp32_do_bus_reset(data); 3058 nsp32_write2(base, IRQ_CONTROL, 0); 3059 3060 spin_unlock_irq(SCpnt->device->host->host_lock); 3061 return SUCCESS; /* Host reset is succeeded at any time. */ 3062 } 3063 3064 3065 /************************************************************************** 3066 * EEPROM handler 3067 */ 3068 3069 /* 3070 * getting EEPROM parameter 3071 */ 3072 static int nsp32_getprom_param(nsp32_hw_data *data) 3073 { 3074 int vendor = data->pci_devid->vendor; 3075 int device = data->pci_devid->device; 3076 int ret, val, i; 3077 3078 /* 3079 * EEPROM checking. 3080 */ 3081 ret = nsp32_prom_read(data, 0x7e); 3082 if (ret != 0x55) { 3083 nsp32_msg(KERN_INFO, "No EEPROM detected: 0x%x", ret); 3084 return FALSE; 3085 } 3086 ret = nsp32_prom_read(data, 0x7f); 3087 if (ret != 0xaa) { 3088 nsp32_msg(KERN_INFO, "Invalid number: 0x%x", ret); 3089 return FALSE; 3090 } 3091 3092 /* 3093 * check EEPROM type 3094 */ 3095 if (vendor == PCI_VENDOR_ID_WORKBIT && 3096 device == PCI_DEVICE_ID_WORKBIT_STANDARD) { 3097 ret = nsp32_getprom_c16(data); 3098 } else if (vendor == PCI_VENDOR_ID_WORKBIT && 3099 device == PCI_DEVICE_ID_NINJASCSI_32BIB_LOGITEC) { 3100 ret = nsp32_getprom_at24(data); 3101 } else if (vendor == PCI_VENDOR_ID_WORKBIT && 3102 device == PCI_DEVICE_ID_NINJASCSI_32UDE_MELCO ) { 3103 ret = nsp32_getprom_at24(data); 3104 } else { 3105 nsp32_msg(KERN_WARNING, "Unknown EEPROM"); 3106 ret = FALSE; 3107 } 3108 3109 /* for debug : SPROM data full checking */ 3110 for (i = 0; i <= 0x1f; i++) { 3111 val = nsp32_prom_read(data, i); 3112 nsp32_dbg(NSP32_DEBUG_EEPROM, 3113 "rom address 0x%x : 0x%x", i, val); 3114 } 3115 3116 return ret; 3117 } 3118 3119 3120 /* 3121 * AT24C01A (Logitec: LHA-600S), AT24C02 (Melco Buffalo: IFC-USLP) data map: 3122 * 3123 * ROMADDR 3124 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6) 3125 * Value 0x0: ASYNC, 0x0c: Ultra-20M, 0x19: Fast-10M 3126 * 0x07 : HBA Synchronous Transfer Period 3127 * Value 0: AutoSync, 1: Manual Setting 3128 * 0x08 - 0x0f : Not Used? (0x0) 3129 * 0x10 : Bus Termination 3130 * Value 0: Auto[ON], 1: ON, 2: OFF 3131 * 0x11 : Not Used? (0) 3132 * 0x12 : Bus Reset Delay Time (0x03) 3133 * 0x13 : Bootable CD Support 3134 * Value 0: Disable, 1: Enable 3135 * 0x14 : Device Scan 3136 * Bit 7 6 5 4 3 2 1 0 3137 * | <-----------------> 3138 * | SCSI ID: Value 0: Skip, 1: YES 3139 * |-> Value 0: ALL scan, Value 1: Manual 3140 * 0x15 - 0x1b : Not Used? (0) 3141 * 0x1c : Constant? (0x01) (clock div?) 3142 * 0x1d - 0x7c : Not Used (0xff) 3143 * 0x7d : Not Used? (0xff) 3144 * 0x7e : Constant (0x55), Validity signature 3145 * 0x7f : Constant (0xaa), Validity signature 3146 */ 3147 static int nsp32_getprom_at24(nsp32_hw_data *data) 3148 { 3149 int ret, i; 3150 int auto_sync; 3151 nsp32_target *target; 3152 int entry; 3153 3154 /* 3155 * Reset time which is designated by EEPROM. 3156 * 3157 * TODO: Not used yet. 3158 */ 3159 data->resettime = nsp32_prom_read(data, 0x12); 3160 3161 /* 3162 * HBA Synchronous Transfer Period 3163 * 3164 * Note: auto_sync = 0: auto, 1: manual. Ninja SCSI HBA spec says 3165 * that if auto_sync is 0 (auto), and connected SCSI devices are 3166 * same or lower than 3, then transfer speed is set as ULTRA-20M. 3167 * On the contrary if connected SCSI devices are same or higher 3168 * than 4, then transfer speed is set as FAST-10M. 3169 * 3170 * I break this rule. The number of connected SCSI devices are 3171 * only ignored. If auto_sync is 0 (auto), then transfer speed is 3172 * forced as ULTRA-20M. 3173 */ 3174 ret = nsp32_prom_read(data, 0x07); 3175 switch (ret) { 3176 case 0: 3177 auto_sync = TRUE; 3178 break; 3179 case 1: 3180 auto_sync = FALSE; 3181 break; 3182 default: 3183 nsp32_msg(KERN_WARNING, 3184 "Unsupported Auto Sync mode. Fall back to manual mode."); 3185 auto_sync = TRUE; 3186 } 3187 3188 if (trans_mode == ULTRA20M_MODE) { 3189 auto_sync = TRUE; 3190 } 3191 3192 /* 3193 * each device Synchronous Transfer Period 3194 */ 3195 for (i = 0; i < NSP32_HOST_SCSIID; i++) { 3196 target = &data->target[i]; 3197 if (auto_sync == TRUE) { 3198 target->limit_entry = 0; /* set as ULTRA20M */ 3199 } else { 3200 ret = nsp32_prom_read(data, i); 3201 entry = nsp32_search_period_entry(data, target, ret); 3202 if (entry < 0) { 3203 /* search failed... set maximum speed */ 3204 entry = 0; 3205 } 3206 target->limit_entry = entry; 3207 } 3208 } 3209 3210 return TRUE; 3211 } 3212 3213 3214 /* 3215 * C16 110 (I-O Data: SC-NBD) data map: 3216 * 3217 * ROMADDR 3218 * 0x00 - 0x06 : Device Synchronous Transfer Period (SCSI ID 0 - 6) 3219 * Value 0x0: 20MB/S, 0x1: 10MB/S, 0x2: 5MB/S, 0x3: ASYNC 3220 * 0x07 : 0 (HBA Synchronous Transfer Period: Auto Sync) 3221 * 0x08 - 0x0f : Not Used? (0x0) 3222 * 0x10 : Transfer Mode 3223 * Value 0: PIO, 1: Busmater 3224 * 0x11 : Bus Reset Delay Time (0x00-0x20) 3225 * 0x12 : Bus Termination 3226 * Value 0: Disable, 1: Enable 3227 * 0x13 - 0x19 : Disconnection 3228 * Value 0: Disable, 1: Enable 3229 * 0x1a - 0x7c : Not Used? (0) 3230 * 0x7d : Not Used? (0xf8) 3231 * 0x7e : Constant (0x55), Validity signature 3232 * 0x7f : Constant (0xaa), Validity signature 3233 */ 3234 static int nsp32_getprom_c16(nsp32_hw_data *data) 3235 { 3236 int ret, i; 3237 nsp32_target *target; 3238 int entry, val; 3239 3240 /* 3241 * Reset time which is designated by EEPROM. 3242 * 3243 * TODO: Not used yet. 3244 */ 3245 data->resettime = nsp32_prom_read(data, 0x11); 3246 3247 /* 3248 * each device Synchronous Transfer Period 3249 */ 3250 for (i = 0; i < NSP32_HOST_SCSIID; i++) { 3251 target = &data->target[i]; 3252 ret = nsp32_prom_read(data, i); 3253 switch (ret) { 3254 case 0: /* 20MB/s */ 3255 val = 0x0c; 3256 break; 3257 case 1: /* 10MB/s */ 3258 val = 0x19; 3259 break; 3260 case 2: /* 5MB/s */ 3261 val = 0x32; 3262 break; 3263 case 3: /* ASYNC */ 3264 val = 0x00; 3265 break; 3266 default: /* default 20MB/s */ 3267 val = 0x0c; 3268 break; 3269 } 3270 entry = nsp32_search_period_entry(data, target, val); 3271 if (entry < 0 || trans_mode == ULTRA20M_MODE) { 3272 /* search failed... set maximum speed */ 3273 entry = 0; 3274 } 3275 target->limit_entry = entry; 3276 } 3277 3278 return TRUE; 3279 } 3280 3281 3282 /* 3283 * Atmel AT24C01A (drived in 5V) serial EEPROM routines 3284 */ 3285 static int nsp32_prom_read(nsp32_hw_data *data, int romaddr) 3286 { 3287 int i, val; 3288 3289 /* start condition */ 3290 nsp32_prom_start(data); 3291 3292 /* device address */ 3293 nsp32_prom_write_bit(data, 1); /* 1 */ 3294 nsp32_prom_write_bit(data, 0); /* 0 */ 3295 nsp32_prom_write_bit(data, 1); /* 1 */ 3296 nsp32_prom_write_bit(data, 0); /* 0 */ 3297 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */ 3298 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */ 3299 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */ 3300 3301 /* R/W: W for dummy write */ 3302 nsp32_prom_write_bit(data, 0); 3303 3304 /* ack */ 3305 nsp32_prom_write_bit(data, 0); 3306 3307 /* word address */ 3308 for (i = 7; i >= 0; i--) { 3309 nsp32_prom_write_bit(data, ((romaddr >> i) & 1)); 3310 } 3311 3312 /* ack */ 3313 nsp32_prom_write_bit(data, 0); 3314 3315 /* start condition */ 3316 nsp32_prom_start(data); 3317 3318 /* device address */ 3319 nsp32_prom_write_bit(data, 1); /* 1 */ 3320 nsp32_prom_write_bit(data, 0); /* 0 */ 3321 nsp32_prom_write_bit(data, 1); /* 1 */ 3322 nsp32_prom_write_bit(data, 0); /* 0 */ 3323 nsp32_prom_write_bit(data, 0); /* A2: 0 (GND) */ 3324 nsp32_prom_write_bit(data, 0); /* A1: 0 (GND) */ 3325 nsp32_prom_write_bit(data, 0); /* A0: 0 (GND) */ 3326 3327 /* R/W: R */ 3328 nsp32_prom_write_bit(data, 1); 3329 3330 /* ack */ 3331 nsp32_prom_write_bit(data, 0); 3332 3333 /* data... */ 3334 val = 0; 3335 for (i = 7; i >= 0; i--) { 3336 val += (nsp32_prom_read_bit(data) << i); 3337 } 3338 3339 /* no ack */ 3340 nsp32_prom_write_bit(data, 1); 3341 3342 /* stop condition */ 3343 nsp32_prom_stop(data); 3344 3345 return val; 3346 } 3347 3348 static void nsp32_prom_set(nsp32_hw_data *data, int bit, int val) 3349 { 3350 int base = data->BaseAddress; 3351 int tmp; 3352 3353 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL); 3354 3355 if (val == 0) { 3356 tmp &= ~bit; 3357 } else { 3358 tmp |= bit; 3359 } 3360 3361 nsp32_index_write1(base, SERIAL_ROM_CTL, tmp); 3362 3363 udelay(10); 3364 } 3365 3366 static int nsp32_prom_get(nsp32_hw_data *data, int bit) 3367 { 3368 int base = data->BaseAddress; 3369 int tmp, ret; 3370 3371 if (bit != SDA) { 3372 nsp32_msg(KERN_ERR, "return value is not appropriate"); 3373 return 0; 3374 } 3375 3376 3377 tmp = nsp32_index_read1(base, SERIAL_ROM_CTL) & bit; 3378 3379 if (tmp == 0) { 3380 ret = 0; 3381 } else { 3382 ret = 1; 3383 } 3384 3385 udelay(10); 3386 3387 return ret; 3388 } 3389 3390 static void nsp32_prom_start (nsp32_hw_data *data) 3391 { 3392 /* start condition */ 3393 nsp32_prom_set(data, SCL, 1); 3394 nsp32_prom_set(data, SDA, 1); 3395 nsp32_prom_set(data, ENA, 1); /* output mode */ 3396 nsp32_prom_set(data, SDA, 0); /* keeping SCL=1 and transiting 3397 * SDA 1->0 is start condition */ 3398 nsp32_prom_set(data, SCL, 0); 3399 } 3400 3401 static void nsp32_prom_stop (nsp32_hw_data *data) 3402 { 3403 /* stop condition */ 3404 nsp32_prom_set(data, SCL, 1); 3405 nsp32_prom_set(data, SDA, 0); 3406 nsp32_prom_set(data, ENA, 1); /* output mode */ 3407 nsp32_prom_set(data, SDA, 1); 3408 nsp32_prom_set(data, SCL, 0); 3409 } 3410 3411 static void nsp32_prom_write_bit(nsp32_hw_data *data, int val) 3412 { 3413 /* write */ 3414 nsp32_prom_set(data, SDA, val); 3415 nsp32_prom_set(data, SCL, 1 ); 3416 nsp32_prom_set(data, SCL, 0 ); 3417 } 3418 3419 static int nsp32_prom_read_bit(nsp32_hw_data *data) 3420 { 3421 int val; 3422 3423 /* read */ 3424 nsp32_prom_set(data, ENA, 0); /* input mode */ 3425 nsp32_prom_set(data, SCL, 1); 3426 3427 val = nsp32_prom_get(data, SDA); 3428 3429 nsp32_prom_set(data, SCL, 0); 3430 nsp32_prom_set(data, ENA, 1); /* output mode */ 3431 3432 return val; 3433 } 3434 3435 3436 /************************************************************************** 3437 * Power Management 3438 */ 3439 #ifdef CONFIG_PM 3440 3441 /* Device suspended */ 3442 static int nsp32_suspend(struct pci_dev *pdev, pm_message_t state) 3443 { 3444 struct Scsi_Host *host = pci_get_drvdata(pdev); 3445 3446 nsp32_msg(KERN_INFO, "pci-suspend: pdev=0x%p, state=%ld, slot=%s, host=0x%p", pdev, state, pci_name(pdev), host); 3447 3448 pci_save_state (pdev); 3449 pci_disable_device (pdev); 3450 pci_set_power_state(pdev, pci_choose_state(pdev, state)); 3451 3452 return 0; 3453 } 3454 3455 /* Device woken up */ 3456 static int nsp32_resume(struct pci_dev *pdev) 3457 { 3458 struct Scsi_Host *host = pci_get_drvdata(pdev); 3459 nsp32_hw_data *data = (nsp32_hw_data *)host->hostdata; 3460 unsigned short reg; 3461 3462 nsp32_msg(KERN_INFO, "pci-resume: pdev=0x%p, slot=%s, host=0x%p", pdev, pci_name(pdev), host); 3463 3464 pci_set_power_state(pdev, PCI_D0); 3465 pci_enable_wake (pdev, PCI_D0, 0); 3466 pci_restore_state (pdev); 3467 3468 reg = nsp32_read2(data->BaseAddress, INDEX_REG); 3469 3470 nsp32_msg(KERN_INFO, "io=0x%x reg=0x%x", data->BaseAddress, reg); 3471 3472 if (reg == 0xffff) { 3473 nsp32_msg(KERN_INFO, "missing device. abort resume."); 3474 return 0; 3475 } 3476 3477 nsp32hw_init (data); 3478 nsp32_do_bus_reset(data); 3479 3480 nsp32_msg(KERN_INFO, "resume success"); 3481 3482 return 0; 3483 } 3484 3485 /* Enable wake event */ 3486 static int nsp32_enable_wake(struct pci_dev *pdev, pci_power_t state, int enable) 3487 { 3488 struct Scsi_Host *host = pci_get_drvdata(pdev); 3489 3490 nsp32_msg(KERN_INFO, "pci-enable_wake: stub, pdev=0x%p, enable=%d, slot=%s, host=0x%p", pdev, enable, pci_name(pdev), host); 3491 3492 return 0; 3493 } 3494 #endif 3495 3496 /************************************************************************ 3497 * PCI/Cardbus probe/remove routine 3498 */ 3499 static int __devinit nsp32_probe(struct pci_dev *pdev, const struct pci_device_id *id) 3500 { 3501 int ret; 3502 nsp32_hw_data *data = &nsp32_data_base; 3503 3504 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); 3505 3506 ret = pci_enable_device(pdev); 3507 if (ret) { 3508 nsp32_msg(KERN_ERR, "failed to enable pci device"); 3509 return ret; 3510 } 3511 3512 data->Pci = pdev; 3513 data->pci_devid = id; 3514 data->IrqNumber = pdev->irq; 3515 data->BaseAddress = pci_resource_start(pdev, 0); 3516 data->NumAddress = pci_resource_len (pdev, 0); 3517 data->MmioAddress = ioremap_nocache(pci_resource_start(pdev, 1), 3518 pci_resource_len (pdev, 1)); 3519 data->MmioLength = pci_resource_len (pdev, 1); 3520 3521 pci_set_master(pdev); 3522 3523 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 3524 ret = nsp32_detect(pdev); 3525 #else 3526 ret = scsi_register_host(&nsp32_template); 3527 #endif 3528 3529 nsp32_msg(KERN_INFO, "irq: %i mmio: %p+0x%lx slot: %s model: %s", 3530 pdev->irq, 3531 data->MmioAddress, data->MmioLength, 3532 pci_name(pdev), 3533 nsp32_model[id->driver_data]); 3534 3535 nsp32_dbg(NSP32_DEBUG_REGISTER, "exit %d", ret); 3536 3537 return ret; 3538 } 3539 3540 static void __devexit nsp32_remove(struct pci_dev *pdev) 3541 { 3542 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 3543 struct Scsi_Host *host = pci_get_drvdata(pdev); 3544 #endif 3545 3546 nsp32_dbg(NSP32_DEBUG_REGISTER, "enter"); 3547 3548 #if (LINUX_VERSION_CODE > KERNEL_VERSION(2,5,73)) 3549 scsi_remove_host(host); 3550 3551 nsp32_release(host); 3552 3553 scsi_host_put(host); 3554 #else 3555 scsi_unregister_host(&nsp32_template); 3556 #endif 3557 } 3558 3559 3560 3561 static struct pci_driver nsp32_driver = { 3562 .name = "nsp32", 3563 .id_table = nsp32_pci_table, 3564 .probe = nsp32_probe, 3565 .remove = __devexit_p(nsp32_remove), 3566 #ifdef CONFIG_PM 3567 .suspend = nsp32_suspend, 3568 .resume = nsp32_resume, 3569 .enable_wake = nsp32_enable_wake, 3570 #endif 3571 }; 3572 3573 /********************************************************************* 3574 * Moule entry point 3575 */ 3576 static int __init init_nsp32(void) { 3577 nsp32_msg(KERN_INFO, "loading..."); 3578 return pci_module_init(&nsp32_driver); 3579 } 3580 3581 static void __exit exit_nsp32(void) { 3582 nsp32_msg(KERN_INFO, "unloading..."); 3583 pci_unregister_driver(&nsp32_driver); 3584 } 3585 3586 module_init(init_nsp32); 3587 module_exit(exit_nsp32); 3588 3589 /* end */ 3590