1/* 2 3w-9xxx.c -- 3ware 9000 Storage Controller device driver for Linux. 3 4 Written By: Adam Radford <aradford@gmail.com> 5 Modifications By: Tom Couch 6 7 Copyright (C) 2004-2009 Applied Micro Circuits Corporation. 8 Copyright (C) 2010 LSI Corporation. 9 10 This program is free software; you can redistribute it and/or modify 11 it under the terms of the GNU General Public License as published by 12 the Free Software Foundation; version 2 of the License. 13 14 This program is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 NO WARRANTY 20 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR 21 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT 22 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, 23 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is 24 solely responsible for determining the appropriateness of using and 25 distributing the Program and assumes all risks associated with its 26 exercise of rights under this Agreement, including but not limited to 27 the risks and costs of program errors, damage to or loss of data, 28 programs or equipment, and unavailability or interruption of operations. 29 30 DISCLAIMER OF LIABILITY 31 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY 32 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 33 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND 34 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR 35 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE 36 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED 37 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES 38 39 You should have received a copy of the GNU General Public License 40 along with this program; if not, write to the Free Software 41 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 42 43 Bugs/Comments/Suggestions should be mailed to: 44 aradford@gmail.com 45 46 Note: This version of the driver does not contain a bundled firmware 47 image. 48 49 History 50 ------- 51 2.26.02.000 - Driver cleanup for kernel submission. 52 2.26.02.001 - Replace schedule_timeout() calls with msleep(). 53 2.26.02.002 - Add support for PAE mode. 54 Add lun support. 55 Fix twa_remove() to free irq handler/unregister_chrdev() 56 before shutting down card. 57 Change to new 'change_queue_depth' api. 58 Fix 'handled=1' ISR usage, remove bogus IRQ check. 59 Remove un-needed eh_abort handler. 60 Add support for embedded firmware error strings. 61 2.26.02.003 - Correctly handle single sgl's with use_sg=1. 62 2.26.02.004 - Add support for 9550SX controllers. 63 2.26.02.005 - Fix use_sg == 0 mapping on systems with 4GB or higher. 64 2.26.02.006 - Fix 9550SX pchip reset timeout. 65 Add big endian support. 66 2.26.02.007 - Disable local interrupts during kmap/unmap_atomic(). 67 2.26.02.008 - Free irq handler in __twa_shutdown(). 68 Serialize reset code. 69 Add support for 9650SE controllers. 70 2.26.02.009 - Fix dma mask setting to fallback to 32-bit if 64-bit fails. 71 2.26.02.010 - Add support for 9690SA controllers. 72 2.26.02.011 - Increase max AENs drained to 256. 73 Add MSI support and "use_msi" module parameter. 74 Fix bug in twa_get_param() on 4GB+. 75 Use pci_resource_len() for ioremap(). 76 2.26.02.012 - Add power management support. 77 2.26.02.013 - Fix bug in twa_load_sgl(). 78 2.26.02.014 - Force 60 second timeout default. 79*/ 80 81#include <linux/module.h> 82#include <linux/reboot.h> 83#include <linux/spinlock.h> 84#include <linux/interrupt.h> 85#include <linux/moduleparam.h> 86#include <linux/errno.h> 87#include <linux/types.h> 88#include <linux/delay.h> 89#include <linux/pci.h> 90#include <linux/time.h> 91#include <linux/mutex.h> 92#include <linux/slab.h> 93#include <asm/io.h> 94#include <asm/irq.h> 95#include <linux/uaccess.h> 96#include <scsi/scsi.h> 97#include <scsi/scsi_host.h> 98#include <scsi/scsi_tcq.h> 99#include <scsi/scsi_cmnd.h> 100#include "3w-9xxx.h" 101 102/* Globals */ 103#define TW_DRIVER_VERSION "2.26.02.014" 104static DEFINE_MUTEX(twa_chrdev_mutex); 105static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT]; 106static unsigned int twa_device_extension_count; 107static int twa_major = -1; 108extern struct timezone sys_tz; 109 110/* Module parameters */ 111MODULE_AUTHOR ("LSI"); 112MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver"); 113MODULE_LICENSE("GPL"); 114MODULE_VERSION(TW_DRIVER_VERSION); 115 116static int use_msi = 0; 117module_param(use_msi, int, S_IRUGO); 118MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0"); 119 120/* Function prototypes */ 121static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header); 122static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id); 123static char *twa_aen_severity_lookup(unsigned char severity_code); 124static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id); 125static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg); 126static int twa_chrdev_open(struct inode *inode, struct file *file); 127static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host); 128static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id); 129static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id); 130static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, 131 u32 set_features, unsigned short current_fw_srl, 132 unsigned short current_fw_arch_id, 133 unsigned short current_fw_branch, 134 unsigned short current_fw_build, 135 unsigned short *fw_on_ctlr_srl, 136 unsigned short *fw_on_ctlr_arch_id, 137 unsigned short *fw_on_ctlr_branch, 138 unsigned short *fw_on_ctlr_build, 139 u32 *init_connect_result); 140static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length); 141static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds); 142static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds); 143static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal); 144static int twa_reset_device_extension(TW_Device_Extension *tw_dev); 145static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset); 146static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, 147 unsigned char *cdb, int use_sg, 148 TW_SG_Entry *sglistarg); 149static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id); 150static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code); 151 152/* Functions */ 153 154/* Show some statistics about the card */ 155static ssize_t twa_show_stats(struct device *dev, 156 struct device_attribute *attr, char *buf) 157{ 158 struct Scsi_Host *host = class_to_shost(dev); 159 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; 160 unsigned long flags = 0; 161 ssize_t len; 162 163 spin_lock_irqsave(tw_dev->host->host_lock, flags); 164 len = sysfs_emit(buf, "3w-9xxx Driver version: %s\n" 165 "Current commands posted: %4d\n" 166 "Max commands posted: %4d\n" 167 "Current pending commands: %4d\n" 168 "Max pending commands: %4d\n" 169 "Last sgl length: %4d\n" 170 "Max sgl length: %4d\n" 171 "Last sector count: %4d\n" 172 "Max sector count: %4d\n" 173 "SCSI Host Resets: %4d\n" 174 "AEN's: %4d\n", 175 TW_DRIVER_VERSION, 176 tw_dev->posted_request_count, 177 tw_dev->max_posted_request_count, 178 tw_dev->pending_request_count, 179 tw_dev->max_pending_request_count, 180 tw_dev->sgl_entries, 181 tw_dev->max_sgl_entries, 182 tw_dev->sector_count, 183 tw_dev->max_sector_count, 184 tw_dev->num_resets, 185 tw_dev->aen_count); 186 spin_unlock_irqrestore(tw_dev->host->host_lock, flags); 187 return len; 188} /* End twa_show_stats() */ 189 190/* Create sysfs 'stats' entry */ 191static struct device_attribute twa_host_stats_attr = { 192 .attr = { 193 .name = "stats", 194 .mode = S_IRUGO, 195 }, 196 .show = twa_show_stats 197}; 198 199/* Host attributes initializer */ 200static struct attribute *twa_host_attrs[] = { 201 &twa_host_stats_attr.attr, 202 NULL, 203}; 204 205ATTRIBUTE_GROUPS(twa_host); 206 207/* File operations struct for character device */ 208static const struct file_operations twa_fops = { 209 .owner = THIS_MODULE, 210 .unlocked_ioctl = twa_chrdev_ioctl, 211 .open = twa_chrdev_open, 212 .release = NULL, 213 .llseek = noop_llseek, 214}; 215 216/* 217 * The controllers use an inline buffer instead of a mapped SGL for small, 218 * single entry buffers. Note that we treat a zero-length transfer like 219 * a mapped SGL. 220 */ 221static bool twa_command_mapped(struct scsi_cmnd *cmd) 222{ 223 return scsi_sg_count(cmd) != 1 || 224 scsi_bufflen(cmd) >= TW_MIN_SGL_LENGTH; 225} 226 227/* This function will complete an aen request from the isr */ 228static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id) 229{ 230 TW_Command_Full *full_command_packet; 231 TW_Command *command_packet; 232 TW_Command_Apache_Header *header; 233 unsigned short aen; 234 int retval = 1; 235 236 header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; 237 tw_dev->posted_request_count--; 238 aen = le16_to_cpu(header->status_block.error); 239 full_command_packet = tw_dev->command_packet_virt[request_id]; 240 command_packet = &full_command_packet->command.oldcommand; 241 242 /* First check for internal completion of set param for time sync */ 243 if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) { 244 /* Keep reading the queue in case there are more aen's */ 245 if (twa_aen_read_queue(tw_dev, request_id)) 246 goto out2; 247 else { 248 retval = 0; 249 goto out; 250 } 251 } 252 253 switch (aen) { 254 case TW_AEN_QUEUE_EMPTY: 255 /* Quit reading the queue if this is the last one */ 256 break; 257 case TW_AEN_SYNC_TIME_WITH_HOST: 258 twa_aen_sync_time(tw_dev, request_id); 259 retval = 0; 260 goto out; 261 default: 262 twa_aen_queue_event(tw_dev, header); 263 264 /* If there are more aen's, keep reading the queue */ 265 if (twa_aen_read_queue(tw_dev, request_id)) 266 goto out2; 267 else { 268 retval = 0; 269 goto out; 270 } 271 } 272 retval = 0; 273out2: 274 tw_dev->state[request_id] = TW_S_COMPLETED; 275 twa_free_request_id(tw_dev, request_id); 276 clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); 277out: 278 return retval; 279} /* End twa_aen_complete() */ 280 281/* This function will drain aen queue */ 282static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) 283{ 284 int request_id = 0; 285 unsigned char cdb[TW_MAX_CDB_LEN]; 286 TW_SG_Entry sglist[1]; 287 int finished = 0, count = 0; 288 TW_Command_Full *full_command_packet; 289 TW_Command_Apache_Header *header; 290 unsigned short aen; 291 int first_reset = 0, queue = 0, retval = 1; 292 293 if (no_check_reset) 294 first_reset = 0; 295 else 296 first_reset = 1; 297 298 full_command_packet = tw_dev->command_packet_virt[request_id]; 299 memset(full_command_packet, 0, sizeof(TW_Command_Full)); 300 301 /* Initialize cdb */ 302 memset(&cdb, 0, TW_MAX_CDB_LEN); 303 cdb[0] = REQUEST_SENSE; /* opcode */ 304 cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ 305 306 /* Initialize sglist */ 307 memset(&sglist, 0, sizeof(TW_SG_Entry)); 308 sglist[0].length = cpu_to_le32(TW_SECTOR_SIZE); 309 sglist[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); 310 311 if (tw_dev->generic_buffer_phys[request_id] & TW_ALIGNMENT_9000_SGL) { 312 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Found unaligned address during AEN drain"); 313 goto out; 314 } 315 316 /* Mark internal command */ 317 tw_dev->srb[request_id] = NULL; 318 319 do { 320 /* Send command to the board */ 321 if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { 322 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Error posting request sense"); 323 goto out; 324 } 325 326 /* Now poll for completion */ 327 if (twa_poll_response(tw_dev, request_id, 30)) { 328 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "No valid response while draining AEN queue"); 329 tw_dev->posted_request_count--; 330 goto out; 331 } 332 333 tw_dev->posted_request_count--; 334 header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; 335 aen = le16_to_cpu(header->status_block.error); 336 queue = 0; 337 count++; 338 339 switch (aen) { 340 case TW_AEN_QUEUE_EMPTY: 341 if (first_reset != 1) 342 goto out; 343 else 344 finished = 1; 345 break; 346 case TW_AEN_SOFT_RESET: 347 if (first_reset == 0) 348 first_reset = 1; 349 else 350 queue = 1; 351 break; 352 case TW_AEN_SYNC_TIME_WITH_HOST: 353 break; 354 default: 355 queue = 1; 356 } 357 358 /* Now queue an event info */ 359 if (queue) 360 twa_aen_queue_event(tw_dev, header); 361 } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN)); 362 363 if (count == TW_MAX_AEN_DRAIN) 364 goto out; 365 366 retval = 0; 367out: 368 tw_dev->state[request_id] = TW_S_INITIAL; 369 return retval; 370} /* End twa_aen_drain_queue() */ 371 372/* This function will queue an event */ 373static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header) 374{ 375 u32 local_time; 376 TW_Event *event; 377 unsigned short aen; 378 char host[16]; 379 char *error_str; 380 381 tw_dev->aen_count++; 382 383 /* Fill out event info */ 384 event = tw_dev->event_queue[tw_dev->error_index]; 385 386 /* Check for clobber */ 387 host[0] = '\0'; 388 if (tw_dev->host) { 389 sprintf(host, " scsi%d:", tw_dev->host->host_no); 390 if (event->retrieved == TW_AEN_NOT_RETRIEVED) 391 tw_dev->aen_clobber = 1; 392 } 393 394 aen = le16_to_cpu(header->status_block.error); 395 memset(event, 0, sizeof(TW_Event)); 396 397 event->severity = TW_SEV_OUT(header->status_block.severity__reserved); 398 /* event->time_stamp_sec overflows in y2106 */ 399 local_time = (u32)(ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60)); 400 event->time_stamp_sec = local_time; 401 event->aen_code = aen; 402 event->retrieved = TW_AEN_NOT_RETRIEVED; 403 event->sequence_id = tw_dev->error_sequence_id; 404 tw_dev->error_sequence_id++; 405 406 /* Check for embedded error string */ 407 error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]); 408 409 header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0'; 410 event->parameter_len = strlen(header->err_specific_desc); 411 memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + (error_str[0] == '\0' ? 0 : (1 + strlen(error_str)))); 412 if (event->severity != TW_AEN_SEVERITY_DEBUG) 413 printk(KERN_WARNING "3w-9xxx:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n", 414 host, 415 twa_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)), 416 TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, 417 error_str[0] == '\0' ? twa_string_lookup(twa_aen_table, aen) : error_str, 418 header->err_specific_desc); 419 else 420 tw_dev->aen_count--; 421 422 if ((tw_dev->error_index + 1) == TW_Q_LENGTH) 423 tw_dev->event_queue_wrapped = 1; 424 tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH; 425} /* End twa_aen_queue_event() */ 426 427/* This function will read the aen queue from the isr */ 428static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) 429{ 430 unsigned char cdb[TW_MAX_CDB_LEN]; 431 TW_SG_Entry sglist[1]; 432 TW_Command_Full *full_command_packet; 433 int retval = 1; 434 435 full_command_packet = tw_dev->command_packet_virt[request_id]; 436 memset(full_command_packet, 0, sizeof(TW_Command_Full)); 437 438 /* Initialize cdb */ 439 memset(&cdb, 0, TW_MAX_CDB_LEN); 440 cdb[0] = REQUEST_SENSE; /* opcode */ 441 cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ 442 443 /* Initialize sglist */ 444 memset(&sglist, 0, sizeof(TW_SG_Entry)); 445 sglist[0].length = cpu_to_le32(TW_SECTOR_SIZE); 446 sglist[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); 447 448 /* Mark internal command */ 449 tw_dev->srb[request_id] = NULL; 450 451 /* Now post the command packet */ 452 if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { 453 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "Post failed while reading AEN queue"); 454 goto out; 455 } 456 retval = 0; 457out: 458 return retval; 459} /* End twa_aen_read_queue() */ 460 461/* This function will look up an AEN severity string */ 462static char *twa_aen_severity_lookup(unsigned char severity_code) 463{ 464 char *retval = NULL; 465 466 if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) || 467 (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG)) 468 goto out; 469 470 retval = twa_aen_severity_table[severity_code]; 471out: 472 return retval; 473} /* End twa_aen_severity_lookup() */ 474 475/* This function will sync firmware time with the host time */ 476static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) 477{ 478 u32 schedulertime; 479 TW_Command_Full *full_command_packet; 480 TW_Command *command_packet; 481 TW_Param_Apache *param; 482 time64_t local_time; 483 484 /* Fill out the command packet */ 485 full_command_packet = tw_dev->command_packet_virt[request_id]; 486 memset(full_command_packet, 0, sizeof(TW_Command_Full)); 487 command_packet = &full_command_packet->command.oldcommand; 488 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); 489 command_packet->request_id = request_id; 490 command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); 491 command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); 492 command_packet->size = TW_COMMAND_SIZE; 493 command_packet->byte6_offset.parameter_count = cpu_to_le16(1); 494 495 /* Setup the param */ 496 param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; 497 memset(param, 0, TW_SECTOR_SIZE); 498 param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */ 499 param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */ 500 param->parameter_size_bytes = cpu_to_le16(4); 501 502 /* Convert system time in UTC to local time seconds since last 503 Sunday 12:00AM */ 504 local_time = (ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60)); 505 div_u64_rem(local_time - (3 * 86400), 604800, &schedulertime); 506 507 memcpy(param->data, &(__le32){cpu_to_le32(schedulertime)}, sizeof(__le32)); 508 509 /* Mark internal command */ 510 tw_dev->srb[request_id] = NULL; 511 512 /* Now post the command */ 513 twa_post_command_packet(tw_dev, request_id, 1); 514} /* End twa_aen_sync_time() */ 515 516/* This function will allocate memory and check if it is correctly aligned */ 517static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) 518{ 519 int i; 520 dma_addr_t dma_handle; 521 unsigned long *cpu_addr; 522 int retval = 1; 523 524 cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, 525 size * TW_Q_LENGTH, &dma_handle, GFP_KERNEL); 526 if (!cpu_addr) { 527 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed"); 528 goto out; 529 } 530 531 if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) { 532 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory"); 533 dma_free_coherent(&tw_dev->tw_pci_dev->dev, size * TW_Q_LENGTH, 534 cpu_addr, dma_handle); 535 goto out; 536 } 537 538 memset(cpu_addr, 0, size*TW_Q_LENGTH); 539 540 for (i = 0; i < TW_Q_LENGTH; i++) { 541 switch(which) { 542 case 0: 543 tw_dev->command_packet_phys[i] = dma_handle+(i*size); 544 tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size)); 545 break; 546 case 1: 547 tw_dev->generic_buffer_phys[i] = dma_handle+(i*size); 548 tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); 549 break; 550 } 551 } 552 retval = 0; 553out: 554 return retval; 555} /* End twa_allocate_memory() */ 556 557/* This function will check the status register for unexpected bits */ 558static int twa_check_bits(u32 status_reg_value) 559{ 560 int retval = 1; 561 562 if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) 563 goto out; 564 if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) 565 goto out; 566 567 retval = 0; 568out: 569 return retval; 570} /* End twa_check_bits() */ 571 572/* This function will check the srl and decide if we are compatible */ 573static int twa_check_srl(TW_Device_Extension *tw_dev, int *flashed) 574{ 575 int retval = 1; 576 unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0; 577 unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0; 578 u32 init_connect_result = 0; 579 580 if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, 581 TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL, 582 TW_9000_ARCH_ID, TW_CURRENT_DRIVER_BRANCH, 583 TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl, 584 &fw_on_ctlr_arch_id, &fw_on_ctlr_branch, 585 &fw_on_ctlr_build, &init_connect_result)) { 586 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "Initconnection failed while checking SRL"); 587 goto out; 588 } 589 590 tw_dev->tw_compat_info.working_srl = fw_on_ctlr_srl; 591 tw_dev->tw_compat_info.working_branch = fw_on_ctlr_branch; 592 tw_dev->tw_compat_info.working_build = fw_on_ctlr_build; 593 594 /* Try base mode compatibility */ 595 if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { 596 if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, 597 TW_EXTENDED_INIT_CONNECT, 598 TW_BASE_FW_SRL, TW_9000_ARCH_ID, 599 TW_BASE_FW_BRANCH, TW_BASE_FW_BUILD, 600 &fw_on_ctlr_srl, &fw_on_ctlr_arch_id, 601 &fw_on_ctlr_branch, &fw_on_ctlr_build, 602 &init_connect_result)) { 603 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Initconnection (base mode) failed while checking SRL"); 604 goto out; 605 } 606 if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { 607 if (TW_CURRENT_DRIVER_SRL > fw_on_ctlr_srl) { 608 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x32, "Firmware and driver incompatibility: please upgrade firmware"); 609 } else { 610 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x33, "Firmware and driver incompatibility: please upgrade driver"); 611 } 612 goto out; 613 } 614 tw_dev->tw_compat_info.working_srl = TW_BASE_FW_SRL; 615 tw_dev->tw_compat_info.working_branch = TW_BASE_FW_BRANCH; 616 tw_dev->tw_compat_info.working_build = TW_BASE_FW_BUILD; 617 } 618 619 /* Load rest of compatibility struct */ 620 strscpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, 621 sizeof(tw_dev->tw_compat_info.driver_version)); 622 tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL; 623 tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH; 624 tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD; 625 tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL; 626 tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH; 627 tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD; 628 tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl; 629 tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch; 630 tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build; 631 632 retval = 0; 633out: 634 return retval; 635} /* End twa_check_srl() */ 636 637/* This function handles ioctl for the character device */ 638static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 639{ 640 struct inode *inode = file_inode(file); 641 long timeout; 642 unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; 643 dma_addr_t dma_handle; 644 int request_id = 0; 645 unsigned int sequence_id = 0; 646 unsigned char event_index, start_index; 647 TW_Ioctl_Driver_Command driver_command; 648 TW_Ioctl_Buf_Apache *tw_ioctl; 649 TW_Lock *tw_lock; 650 TW_Command_Full *full_command_packet; 651 TW_Compatibility_Info *tw_compat_info; 652 TW_Event *event; 653 ktime_t current_time; 654 TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)]; 655 int retval = TW_IOCTL_ERROR_OS_EFAULT; 656 void __user *argp = (void __user *)arg; 657 658 mutex_lock(&twa_chrdev_mutex); 659 660 /* Only let one of these through at a time */ 661 if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { 662 retval = TW_IOCTL_ERROR_OS_EINTR; 663 goto out; 664 } 665 666 /* First copy down the driver command */ 667 if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command))) 668 goto out2; 669 670 /* Check data buffer size */ 671 if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) { 672 retval = TW_IOCTL_ERROR_OS_EINVAL; 673 goto out2; 674 } 675 676 /* Hardware can only do multiple of 512 byte transfers */ 677 data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511; 678 679 /* Now allocate ioctl buf memory */ 680 cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, 681 sizeof(TW_Ioctl_Buf_Apache) + data_buffer_length_adjusted, 682 &dma_handle, GFP_KERNEL); 683 if (!cpu_addr) { 684 retval = TW_IOCTL_ERROR_OS_ENOMEM; 685 goto out2; 686 } 687 688 tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr; 689 690 /* Now copy down the entire ioctl */ 691 if (copy_from_user(tw_ioctl, argp, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length)) 692 goto out3; 693 694 /* See which ioctl we are doing */ 695 switch (cmd) { 696 case TW_IOCTL_FIRMWARE_PASS_THROUGH: 697 spin_lock_irqsave(tw_dev->host->host_lock, flags); 698 twa_get_request_id(tw_dev, &request_id); 699 700 /* Flag internal command */ 701 tw_dev->srb[request_id] = NULL; 702 703 /* Flag chrdev ioctl */ 704 tw_dev->chrdev_request_id = request_id; 705 706 full_command_packet = &tw_ioctl->firmware_command; 707 708 /* Load request id and sglist for both command types */ 709 twa_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted); 710 711 memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full)); 712 713 /* Now post the command packet to the controller */ 714 twa_post_command_packet(tw_dev, request_id, 1); 715 spin_unlock_irqrestore(tw_dev->host->host_lock, flags); 716 717 timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; 718 719 /* Now wait for command to complete */ 720 timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); 721 722 /* We timed out, and didn't get an interrupt */ 723 if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { 724 /* Now we need to reset the board */ 725 printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n", 726 tw_dev->host->host_no, TW_DRIVER, 0x37, 727 cmd); 728 retval = TW_IOCTL_ERROR_OS_EIO; 729 twa_reset_device_extension(tw_dev); 730 goto out3; 731 } 732 733 /* Now copy in the command packet response */ 734 memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full)); 735 736 /* Now complete the io */ 737 spin_lock_irqsave(tw_dev->host->host_lock, flags); 738 tw_dev->posted_request_count--; 739 tw_dev->state[request_id] = TW_S_COMPLETED; 740 twa_free_request_id(tw_dev, request_id); 741 spin_unlock_irqrestore(tw_dev->host->host_lock, flags); 742 break; 743 case TW_IOCTL_GET_COMPATIBILITY_INFO: 744 tw_ioctl->driver_command.status = 0; 745 /* Copy compatibility struct into ioctl data buffer */ 746 tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer; 747 memcpy(tw_compat_info, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info)); 748 break; 749 case TW_IOCTL_GET_LAST_EVENT: 750 if (tw_dev->event_queue_wrapped) { 751 if (tw_dev->aen_clobber) { 752 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; 753 tw_dev->aen_clobber = 0; 754 } else 755 tw_ioctl->driver_command.status = 0; 756 } else { 757 if (!tw_dev->error_index) { 758 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; 759 break; 760 } 761 tw_ioctl->driver_command.status = 0; 762 } 763 event_index = (tw_dev->error_index - 1 + TW_Q_LENGTH) % TW_Q_LENGTH; 764 memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); 765 tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; 766 break; 767 case TW_IOCTL_GET_FIRST_EVENT: 768 if (tw_dev->event_queue_wrapped) { 769 if (tw_dev->aen_clobber) { 770 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; 771 tw_dev->aen_clobber = 0; 772 } else 773 tw_ioctl->driver_command.status = 0; 774 event_index = tw_dev->error_index; 775 } else { 776 if (!tw_dev->error_index) { 777 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; 778 break; 779 } 780 tw_ioctl->driver_command.status = 0; 781 event_index = 0; 782 } 783 memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); 784 tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; 785 break; 786 case TW_IOCTL_GET_NEXT_EVENT: 787 event = (TW_Event *)tw_ioctl->data_buffer; 788 sequence_id = event->sequence_id; 789 tw_ioctl->driver_command.status = 0; 790 791 if (tw_dev->event_queue_wrapped) { 792 if (tw_dev->aen_clobber) { 793 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; 794 tw_dev->aen_clobber = 0; 795 } 796 start_index = tw_dev->error_index; 797 } else { 798 if (!tw_dev->error_index) { 799 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; 800 break; 801 } 802 start_index = 0; 803 } 804 event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id + 1) % TW_Q_LENGTH; 805 806 if (!(tw_dev->event_queue[event_index]->sequence_id > sequence_id)) { 807 if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) 808 tw_dev->aen_clobber = 1; 809 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; 810 break; 811 } 812 memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); 813 tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; 814 break; 815 case TW_IOCTL_GET_PREVIOUS_EVENT: 816 event = (TW_Event *)tw_ioctl->data_buffer; 817 sequence_id = event->sequence_id; 818 tw_ioctl->driver_command.status = 0; 819 820 if (tw_dev->event_queue_wrapped) { 821 if (tw_dev->aen_clobber) { 822 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; 823 tw_dev->aen_clobber = 0; 824 } 825 start_index = tw_dev->error_index; 826 } else { 827 if (!tw_dev->error_index) { 828 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; 829 break; 830 } 831 start_index = 0; 832 } 833 event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id - 1) % TW_Q_LENGTH; 834 835 if (!(tw_dev->event_queue[event_index]->sequence_id < sequence_id)) { 836 if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) 837 tw_dev->aen_clobber = 1; 838 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; 839 break; 840 } 841 memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); 842 tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; 843 break; 844 case TW_IOCTL_GET_LOCK: 845 tw_lock = (TW_Lock *)tw_ioctl->data_buffer; 846 current_time = ktime_get(); 847 848 if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) || 849 ktime_after(current_time, tw_dev->ioctl_time)) { 850 tw_dev->ioctl_sem_lock = 1; 851 tw_dev->ioctl_time = ktime_add_ms(current_time, tw_lock->timeout_msec); 852 tw_ioctl->driver_command.status = 0; 853 tw_lock->time_remaining_msec = tw_lock->timeout_msec; 854 } else { 855 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED; 856 tw_lock->time_remaining_msec = ktime_ms_delta(tw_dev->ioctl_time, current_time); 857 } 858 break; 859 case TW_IOCTL_RELEASE_LOCK: 860 if (tw_dev->ioctl_sem_lock == 1) { 861 tw_dev->ioctl_sem_lock = 0; 862 tw_ioctl->driver_command.status = 0; 863 } else { 864 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED; 865 } 866 break; 867 default: 868 retval = TW_IOCTL_ERROR_OS_ENOTTY; 869 goto out3; 870 } 871 872 /* Now copy the entire response to userspace */ 873 if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length) == 0) 874 retval = 0; 875out3: 876 /* Now free ioctl buf memory */ 877 dma_free_coherent(&tw_dev->tw_pci_dev->dev, 878 sizeof(TW_Ioctl_Buf_Apache) + data_buffer_length_adjusted, 879 cpu_addr, dma_handle); 880out2: 881 mutex_unlock(&tw_dev->ioctl_lock); 882out: 883 mutex_unlock(&twa_chrdev_mutex); 884 return retval; 885} /* End twa_chrdev_ioctl() */ 886 887/* This function handles open for the character device */ 888/* NOTE that this function will race with remove. */ 889static int twa_chrdev_open(struct inode *inode, struct file *file) 890{ 891 unsigned int minor_number; 892 int retval = TW_IOCTL_ERROR_OS_ENODEV; 893 894 if (!capable(CAP_SYS_ADMIN)) { 895 retval = -EACCES; 896 goto out; 897 } 898 899 minor_number = iminor(inode); 900 if (minor_number >= twa_device_extension_count) 901 goto out; 902 retval = 0; 903out: 904 return retval; 905} /* End twa_chrdev_open() */ 906 907/* This function will print readable messages from status register errors */ 908static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value) 909{ 910 int retval = 1; 911 912 /* Check for various error conditions and handle them appropriately */ 913 if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { 914 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "PCI Parity Error: clearing"); 915 writel(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); 916 } 917 918 if (status_reg_value & TW_STATUS_PCI_ABORT) { 919 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "PCI Abort: clearing"); 920 writel(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); 921 pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); 922 } 923 924 if (status_reg_value & TW_STATUS_QUEUE_ERROR) { 925 if (((tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9650SE) && 926 (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9690SA)) || 927 (!test_bit(TW_IN_RESET, &tw_dev->flags))) 928 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Controller Queue Error: clearing"); 929 writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); 930 } 931 932 if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { 933 if (tw_dev->reset_print == 0) { 934 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing"); 935 tw_dev->reset_print = 1; 936 } 937 goto out; 938 } 939 retval = 0; 940out: 941 return retval; 942} /* End twa_decode_bits() */ 943 944/* This function will empty the response queue */ 945static int twa_empty_response_queue(TW_Device_Extension *tw_dev) 946{ 947 u32 status_reg_value; 948 int count = 0, retval = 1; 949 950 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 951 952 while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) { 953 readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); 954 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 955 count++; 956 } 957 if (count == TW_MAX_RESPONSE_DRAIN) 958 goto out; 959 960 retval = 0; 961out: 962 return retval; 963} /* End twa_empty_response_queue() */ 964 965/* This function will clear the pchip/response queue on 9550SX */ 966static int twa_empty_response_queue_large(TW_Device_Extension *tw_dev) 967{ 968 u32 response_que_value = 0; 969 unsigned long before; 970 int retval = 1; 971 972 if (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9000) { 973 before = jiffies; 974 while ((response_que_value & TW_9550SX_DRAIN_COMPLETED) != TW_9550SX_DRAIN_COMPLETED) { 975 response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR_LARGE(tw_dev)); 976 msleep(1); 977 if (time_after(jiffies, before + HZ * 30)) 978 goto out; 979 } 980 /* P-chip settle time */ 981 msleep(500); 982 retval = 0; 983 } else 984 retval = 0; 985out: 986 return retval; 987} /* End twa_empty_response_queue_large() */ 988 989/* This function passes sense keys from firmware to scsi layer */ 990static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host) 991{ 992 TW_Command_Full *full_command_packet; 993 unsigned short error; 994 int retval = 1; 995 char *error_str; 996 997 full_command_packet = tw_dev->command_packet_virt[request_id]; 998 999 /* Check for embedded error string */ 1000 error_str = &(full_command_packet->header.err_specific_desc[strlen(full_command_packet->header.err_specific_desc) + 1]); 1001 1002 /* Don't print error for Logical unit not supported during rollcall */ 1003 error = le16_to_cpu(full_command_packet->header.status_block.error); 1004 if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE)) { 1005 if (print_host) 1006 printk(KERN_WARNING "3w-9xxx: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n", 1007 tw_dev->host->host_no, 1008 TW_MESSAGE_SOURCE_CONTROLLER_ERROR, error, 1009 error_str[0] ? error_str : twa_string_lookup(twa_error_table, error), 1010 full_command_packet->header.err_specific_desc); 1011 else 1012 printk(KERN_WARNING "3w-9xxx: ERROR: (0x%02X:0x%04X): %s:%s.\n", 1013 TW_MESSAGE_SOURCE_CONTROLLER_ERROR, error, 1014 error_str[0] ? error_str : twa_string_lookup(twa_error_table, error), 1015 full_command_packet->header.err_specific_desc); 1016 } 1017 1018 if (copy_sense) { 1019 memcpy(tw_dev->srb[request_id]->sense_buffer, full_command_packet->header.sense_data, TW_SENSE_DATA_LENGTH); 1020 tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1); 1021 retval = TW_ISR_DONT_RESULT; 1022 goto out; 1023 } 1024 retval = 0; 1025out: 1026 return retval; 1027} /* End twa_fill_sense() */ 1028 1029/* This function will free up device extension resources */ 1030static void twa_free_device_extension(TW_Device_Extension *tw_dev) 1031{ 1032 if (tw_dev->command_packet_virt[0]) 1033 dma_free_coherent(&tw_dev->tw_pci_dev->dev, 1034 sizeof(TW_Command_Full) * TW_Q_LENGTH, 1035 tw_dev->command_packet_virt[0], 1036 tw_dev->command_packet_phys[0]); 1037 1038 if (tw_dev->generic_buffer_virt[0]) 1039 dma_free_coherent(&tw_dev->tw_pci_dev->dev, 1040 TW_SECTOR_SIZE * TW_Q_LENGTH, 1041 tw_dev->generic_buffer_virt[0], 1042 tw_dev->generic_buffer_phys[0]); 1043 1044 kfree(tw_dev->event_queue[0]); 1045} /* End twa_free_device_extension() */ 1046 1047/* This function will free a request id */ 1048static void twa_free_request_id(TW_Device_Extension *tw_dev, int request_id) 1049{ 1050 tw_dev->free_queue[tw_dev->free_tail] = request_id; 1051 tw_dev->state[request_id] = TW_S_FINISHED; 1052 tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; 1053} /* End twa_free_request_id() */ 1054 1055/* This function will get parameter table entries from the firmware */ 1056static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes) 1057{ 1058 TW_Command_Full *full_command_packet; 1059 TW_Command *command_packet; 1060 TW_Param_Apache *param; 1061 void *retval = NULL; 1062 1063 /* Setup the command packet */ 1064 full_command_packet = tw_dev->command_packet_virt[request_id]; 1065 memset(full_command_packet, 0, sizeof(TW_Command_Full)); 1066 command_packet = &full_command_packet->command.oldcommand; 1067 1068 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); 1069 command_packet->size = TW_COMMAND_SIZE; 1070 command_packet->request_id = request_id; 1071 command_packet->byte6_offset.block_count = cpu_to_le16(1); 1072 1073 /* Now setup the param */ 1074 param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; 1075 memset(param, 0, TW_SECTOR_SIZE); 1076 param->table_id = cpu_to_le16(table_id | 0x8000); 1077 param->parameter_id = cpu_to_le16(parameter_id); 1078 param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes); 1079 1080 command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); 1081 command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); 1082 1083 /* Post the command packet to the board */ 1084 twa_post_command_packet(tw_dev, request_id, 1); 1085 1086 /* Poll for completion */ 1087 if (twa_poll_response(tw_dev, request_id, 30)) 1088 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "No valid response during get param") 1089 else 1090 retval = (void *)&(param->data[0]); 1091 1092 tw_dev->posted_request_count--; 1093 tw_dev->state[request_id] = TW_S_INITIAL; 1094 1095 return retval; 1096} /* End twa_get_param() */ 1097 1098/* This function will assign an available request id */ 1099static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id) 1100{ 1101 *request_id = tw_dev->free_queue[tw_dev->free_head]; 1102 tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; 1103 tw_dev->state[*request_id] = TW_S_STARTED; 1104} /* End twa_get_request_id() */ 1105 1106/* This function will send an initconnection command to controller */ 1107static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, 1108 u32 set_features, unsigned short current_fw_srl, 1109 unsigned short current_fw_arch_id, 1110 unsigned short current_fw_branch, 1111 unsigned short current_fw_build, 1112 unsigned short *fw_on_ctlr_srl, 1113 unsigned short *fw_on_ctlr_arch_id, 1114 unsigned short *fw_on_ctlr_branch, 1115 unsigned short *fw_on_ctlr_build, 1116 u32 *init_connect_result) 1117{ 1118 TW_Command_Full *full_command_packet; 1119 TW_Initconnect *tw_initconnect; 1120 int request_id = 0, retval = 1; 1121 1122 /* Initialize InitConnection command packet */ 1123 full_command_packet = tw_dev->command_packet_virt[request_id]; 1124 memset(full_command_packet, 0, sizeof(TW_Command_Full)); 1125 full_command_packet->header.header_desc.size_header = 128; 1126 1127 tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand; 1128 tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION); 1129 tw_initconnect->request_id = request_id; 1130 tw_initconnect->message_credits = cpu_to_le16(message_credits); 1131 1132 /* Turn on 64-bit sgl support if we need to */ 1133 set_features |= sizeof(dma_addr_t) > 4 ? 1 : 0; 1134 1135 tw_initconnect->features = cpu_to_le32(set_features); 1136 1137 if (set_features & TW_EXTENDED_INIT_CONNECT) { 1138 tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED; 1139 tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl); 1140 tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id); 1141 tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch); 1142 tw_initconnect->fw_build = cpu_to_le16(current_fw_build); 1143 } else 1144 tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE; 1145 1146 /* Send command packet to the board */ 1147 twa_post_command_packet(tw_dev, request_id, 1); 1148 1149 /* Poll for completion */ 1150 if (twa_poll_response(tw_dev, request_id, 30)) { 1151 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "No valid response during init connection"); 1152 } else { 1153 if (set_features & TW_EXTENDED_INIT_CONNECT) { 1154 *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl); 1155 *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id); 1156 *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch); 1157 *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build); 1158 *init_connect_result = le32_to_cpu(tw_initconnect->result); 1159 } 1160 retval = 0; 1161 } 1162 1163 tw_dev->posted_request_count--; 1164 tw_dev->state[request_id] = TW_S_INITIAL; 1165 1166 return retval; 1167} /* End twa_initconnection() */ 1168 1169/* This function will initialize the fields of a device extension */ 1170static int twa_initialize_device_extension(TW_Device_Extension *tw_dev) 1171{ 1172 int i, retval = 1; 1173 1174 /* Initialize command packet buffers */ 1175 if (twa_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) { 1176 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Command packet memory allocation failed"); 1177 goto out; 1178 } 1179 1180 /* Initialize generic buffer */ 1181 if (twa_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) { 1182 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x17, "Generic memory allocation failed"); 1183 goto out; 1184 } 1185 1186 /* Allocate event info space */ 1187 tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL); 1188 if (!tw_dev->event_queue[0]) { 1189 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed"); 1190 goto out; 1191 } 1192 1193 1194 for (i = 0; i < TW_Q_LENGTH; i++) { 1195 tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event))); 1196 tw_dev->free_queue[i] = i; 1197 tw_dev->state[i] = TW_S_INITIAL; 1198 } 1199 1200 tw_dev->pending_head = TW_Q_START; 1201 tw_dev->pending_tail = TW_Q_START; 1202 tw_dev->free_head = TW_Q_START; 1203 tw_dev->free_tail = TW_Q_START; 1204 tw_dev->error_sequence_id = 1; 1205 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; 1206 1207 mutex_init(&tw_dev->ioctl_lock); 1208 init_waitqueue_head(&tw_dev->ioctl_wqueue); 1209 1210 retval = 0; 1211out: 1212 return retval; 1213} /* End twa_initialize_device_extension() */ 1214 1215/* This function is the interrupt service routine */ 1216static irqreturn_t twa_interrupt(int irq, void *dev_instance) 1217{ 1218 int request_id, error = 0; 1219 u32 status_reg_value; 1220 TW_Response_Queue response_que; 1221 TW_Command_Full *full_command_packet; 1222 TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; 1223 int handled = 0; 1224 1225 /* Get the per adapter lock */ 1226 spin_lock(tw_dev->host->host_lock); 1227 1228 /* Read the registers */ 1229 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 1230 1231 /* Check if this is our interrupt, otherwise bail */ 1232 if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) 1233 goto twa_interrupt_bail; 1234 1235 handled = 1; 1236 1237 /* If we are resetting, bail */ 1238 if (test_bit(TW_IN_RESET, &tw_dev->flags)) 1239 goto twa_interrupt_bail; 1240 1241 /* Check controller for errors */ 1242 if (twa_check_bits(status_reg_value)) { 1243 if (twa_decode_bits(tw_dev, status_reg_value)) { 1244 TW_CLEAR_ALL_INTERRUPTS(tw_dev); 1245 goto twa_interrupt_bail; 1246 } 1247 } 1248 1249 /* Handle host interrupt */ 1250 if (status_reg_value & TW_STATUS_HOST_INTERRUPT) 1251 TW_CLEAR_HOST_INTERRUPT(tw_dev); 1252 1253 /* Handle attention interrupt */ 1254 if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { 1255 TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); 1256 if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) { 1257 twa_get_request_id(tw_dev, &request_id); 1258 1259 error = twa_aen_read_queue(tw_dev, request_id); 1260 if (error) { 1261 tw_dev->state[request_id] = TW_S_COMPLETED; 1262 twa_free_request_id(tw_dev, request_id); 1263 clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); 1264 } 1265 } 1266 } 1267 1268 /* Handle command interrupt */ 1269 if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { 1270 TW_MASK_COMMAND_INTERRUPT(tw_dev); 1271 /* Drain as many pending commands as we can */ 1272 while (tw_dev->pending_request_count > 0) { 1273 request_id = tw_dev->pending_queue[tw_dev->pending_head]; 1274 if (tw_dev->state[request_id] != TW_S_PENDING) { 1275 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x19, "Found request id that wasn't pending"); 1276 TW_CLEAR_ALL_INTERRUPTS(tw_dev); 1277 goto twa_interrupt_bail; 1278 } 1279 if (twa_post_command_packet(tw_dev, request_id, 1)==0) { 1280 tw_dev->pending_head = (tw_dev->pending_head + 1) % TW_Q_LENGTH; 1281 tw_dev->pending_request_count--; 1282 } else { 1283 /* If we get here, we will continue re-posting on the next command interrupt */ 1284 break; 1285 } 1286 } 1287 } 1288 1289 /* Handle response interrupt */ 1290 if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { 1291 1292 /* Drain the response queue from the board */ 1293 while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { 1294 /* Complete the response */ 1295 response_que.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); 1296 request_id = TW_RESID_OUT(response_que.response_id); 1297 full_command_packet = tw_dev->command_packet_virt[request_id]; 1298 error = 0; 1299 /* Check for command packet errors */ 1300 if (full_command_packet->command.newcommand.status != 0) { 1301 if (tw_dev->srb[request_id] != NULL) { 1302 error = twa_fill_sense(tw_dev, request_id, 1, 1); 1303 } else { 1304 /* Skip ioctl error prints */ 1305 if (request_id != tw_dev->chrdev_request_id) { 1306 error = twa_fill_sense(tw_dev, request_id, 0, 1); 1307 } 1308 } 1309 } 1310 1311 /* Check for correct state */ 1312 if (tw_dev->state[request_id] != TW_S_POSTED) { 1313 if (tw_dev->srb[request_id] != NULL) { 1314 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted"); 1315 TW_CLEAR_ALL_INTERRUPTS(tw_dev); 1316 goto twa_interrupt_bail; 1317 } 1318 } 1319 1320 /* Check for internal command completion */ 1321 if (tw_dev->srb[request_id] == NULL) { 1322 if (request_id != tw_dev->chrdev_request_id) { 1323 if (twa_aen_complete(tw_dev, request_id)) 1324 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt"); 1325 } else { 1326 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; 1327 wake_up(&tw_dev->ioctl_wqueue); 1328 } 1329 } else { 1330 struct scsi_cmnd *cmd; 1331 1332 cmd = tw_dev->srb[request_id]; 1333 1334 twa_scsiop_execute_scsi_complete(tw_dev, request_id); 1335 /* If no error command was a success */ 1336 if (error == 0) { 1337 cmd->result = (DID_OK << 16); 1338 } 1339 1340 /* If error, command failed */ 1341 if (error == 1) { 1342 /* Ask for a host reset */ 1343 cmd->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; 1344 } 1345 1346 /* Report residual bytes for single sgl */ 1347 if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) { 1348 u32 length = le32_to_cpu(full_command_packet->command.newcommand.sg_list[0].length); 1349 1350 if (length < scsi_bufflen(cmd)) 1351 scsi_set_resid(cmd, scsi_bufflen(cmd) - length); 1352 } 1353 1354 /* Now complete the io */ 1355 if (twa_command_mapped(cmd)) 1356 scsi_dma_unmap(cmd); 1357 scsi_done(cmd); 1358 tw_dev->state[request_id] = TW_S_COMPLETED; 1359 twa_free_request_id(tw_dev, request_id); 1360 tw_dev->posted_request_count--; 1361 } 1362 1363 /* Check for valid status after each drain */ 1364 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 1365 if (twa_check_bits(status_reg_value)) { 1366 if (twa_decode_bits(tw_dev, status_reg_value)) { 1367 TW_CLEAR_ALL_INTERRUPTS(tw_dev); 1368 goto twa_interrupt_bail; 1369 } 1370 } 1371 } 1372 } 1373 1374twa_interrupt_bail: 1375 spin_unlock(tw_dev->host->host_lock); 1376 return IRQ_RETVAL(handled); 1377} /* End twa_interrupt() */ 1378 1379/* This function will load the request id and various sgls for ioctls */ 1380static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length) 1381{ 1382 TW_Command *oldcommand; 1383 TW_Command_Apache *newcommand; 1384 TW_SG_Entry *sgl; 1385 unsigned int pae = 0; 1386 1387 if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4)) 1388 pae = 1; 1389 1390 if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { 1391 newcommand = &full_command_packet->command.newcommand; 1392 newcommand->request_id__lunl = 1393 TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id); 1394 if (length) { 1395 newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache)); 1396 newcommand->sg_list[0].length = cpu_to_le32(length); 1397 } 1398 newcommand->sgl_entries__lunh = 1399 TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0); 1400 } else { 1401 oldcommand = &full_command_packet->command.oldcommand; 1402 oldcommand->request_id = request_id; 1403 1404 if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) { 1405 /* Load the sg list */ 1406 if (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA) 1407 sgl = (TW_SG_Entry *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry)/4) + pae); 1408 else 1409 sgl = (TW_SG_Entry *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset)); 1410 sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache)); 1411 sgl->length = cpu_to_le32(length); 1412 1413 oldcommand->size += pae; 1414 } 1415 } 1416} /* End twa_load_sgl() */ 1417 1418/* This function will poll for a response interrupt of a request */ 1419static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) 1420{ 1421 int retval = 1, found = 0, response_request_id; 1422 TW_Response_Queue response_queue; 1423 TW_Command_Full *full_command_packet = tw_dev->command_packet_virt[request_id]; 1424 1425 if (twa_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds) == 0) { 1426 response_queue.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); 1427 response_request_id = TW_RESID_OUT(response_queue.response_id); 1428 if (request_id != response_request_id) { 1429 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "Found unexpected request id while polling for response"); 1430 goto out; 1431 } 1432 if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { 1433 if (full_command_packet->command.newcommand.status != 0) { 1434 /* bad response */ 1435 twa_fill_sense(tw_dev, request_id, 0, 0); 1436 goto out; 1437 } 1438 found = 1; 1439 } else { 1440 if (full_command_packet->command.oldcommand.status != 0) { 1441 /* bad response */ 1442 twa_fill_sense(tw_dev, request_id, 0, 0); 1443 goto out; 1444 } 1445 found = 1; 1446 } 1447 } 1448 1449 if (found) 1450 retval = 0; 1451out: 1452 return retval; 1453} /* End twa_poll_response() */ 1454 1455/* This function will poll the status register for a flag */ 1456static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) 1457{ 1458 u32 status_reg_value; 1459 unsigned long before; 1460 int retval = 1; 1461 1462 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 1463 before = jiffies; 1464 1465 if (twa_check_bits(status_reg_value)) 1466 twa_decode_bits(tw_dev, status_reg_value); 1467 1468 while ((status_reg_value & flag) != flag) { 1469 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 1470 1471 if (twa_check_bits(status_reg_value)) 1472 twa_decode_bits(tw_dev, status_reg_value); 1473 1474 if (time_after(jiffies, before + HZ * seconds)) 1475 goto out; 1476 1477 msleep(50); 1478 } 1479 retval = 0; 1480out: 1481 return retval; 1482} /* End twa_poll_status() */ 1483 1484/* This function will poll the status register for disappearance of a flag */ 1485static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) 1486{ 1487 u32 status_reg_value; 1488 unsigned long before; 1489 int retval = 1; 1490 1491 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 1492 before = jiffies; 1493 1494 if (twa_check_bits(status_reg_value)) 1495 twa_decode_bits(tw_dev, status_reg_value); 1496 1497 while ((status_reg_value & flag) != 0) { 1498 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 1499 if (twa_check_bits(status_reg_value)) 1500 twa_decode_bits(tw_dev, status_reg_value); 1501 1502 if (time_after(jiffies, before + HZ * seconds)) 1503 goto out; 1504 1505 msleep(50); 1506 } 1507 retval = 0; 1508out: 1509 return retval; 1510} /* End twa_poll_status_gone() */ 1511 1512/* This function will attempt to post a command packet to the board */ 1513static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal) 1514{ 1515 u32 status_reg_value; 1516 dma_addr_t command_que_value; 1517 int retval = 1; 1518 1519 command_que_value = tw_dev->command_packet_phys[request_id]; 1520 1521 /* For 9650SE write low 4 bytes first */ 1522 if ((tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9650SE) || 1523 (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)) { 1524 command_que_value += TW_COMMAND_OFFSET; 1525 writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR_LARGE(tw_dev)); 1526 } 1527 1528 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); 1529 1530 if (twa_check_bits(status_reg_value)) 1531 twa_decode_bits(tw_dev, status_reg_value); 1532 1533 if (((tw_dev->pending_request_count > 0) && (tw_dev->state[request_id] != TW_S_PENDING)) || (status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL)) { 1534 1535 /* Only pend internal driver commands */ 1536 if (!internal) { 1537 retval = SCSI_MLQUEUE_HOST_BUSY; 1538 goto out; 1539 } 1540 1541 /* Couldn't post the command packet, so we do it later */ 1542 if (tw_dev->state[request_id] != TW_S_PENDING) { 1543 tw_dev->state[request_id] = TW_S_PENDING; 1544 tw_dev->pending_request_count++; 1545 if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { 1546 tw_dev->max_pending_request_count = tw_dev->pending_request_count; 1547 } 1548 tw_dev->pending_queue[tw_dev->pending_tail] = request_id; 1549 tw_dev->pending_tail = (tw_dev->pending_tail + 1) % TW_Q_LENGTH; 1550 } 1551 TW_UNMASK_COMMAND_INTERRUPT(tw_dev); 1552 goto out; 1553 } else { 1554 if ((tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9650SE) || 1555 (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)) { 1556 /* Now write upper 4 bytes */ 1557 writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR_LARGE(tw_dev) + 0x4); 1558 } else { 1559 if (sizeof(dma_addr_t) > 4) { 1560 command_que_value += TW_COMMAND_OFFSET; 1561 writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); 1562 writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR(tw_dev) + 0x4); 1563 } else { 1564 writel(TW_COMMAND_OFFSET + command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); 1565 } 1566 } 1567 tw_dev->state[request_id] = TW_S_POSTED; 1568 tw_dev->posted_request_count++; 1569 if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { 1570 tw_dev->max_posted_request_count = tw_dev->posted_request_count; 1571 } 1572 } 1573 retval = 0; 1574out: 1575 return retval; 1576} /* End twa_post_command_packet() */ 1577 1578/* This function will reset a device extension */ 1579static int twa_reset_device_extension(TW_Device_Extension *tw_dev) 1580{ 1581 int i = 0; 1582 int retval = 1; 1583 unsigned long flags = 0; 1584 1585 set_bit(TW_IN_RESET, &tw_dev->flags); 1586 TW_DISABLE_INTERRUPTS(tw_dev); 1587 TW_MASK_COMMAND_INTERRUPT(tw_dev); 1588 spin_lock_irqsave(tw_dev->host->host_lock, flags); 1589 1590 /* Abort all requests that are in progress */ 1591 for (i = 0; i < TW_Q_LENGTH; i++) { 1592 if ((tw_dev->state[i] != TW_S_FINISHED) && 1593 (tw_dev->state[i] != TW_S_INITIAL) && 1594 (tw_dev->state[i] != TW_S_COMPLETED)) { 1595 if (tw_dev->srb[i]) { 1596 struct scsi_cmnd *cmd = tw_dev->srb[i]; 1597 1598 cmd->result = (DID_RESET << 16); 1599 if (twa_command_mapped(cmd)) 1600 scsi_dma_unmap(cmd); 1601 scsi_done(cmd); 1602 } 1603 } 1604 } 1605 1606 /* Reset queues and counts */ 1607 for (i = 0; i < TW_Q_LENGTH; i++) { 1608 tw_dev->free_queue[i] = i; 1609 tw_dev->state[i] = TW_S_INITIAL; 1610 } 1611 tw_dev->free_head = TW_Q_START; 1612 tw_dev->free_tail = TW_Q_START; 1613 tw_dev->posted_request_count = 0; 1614 tw_dev->pending_request_count = 0; 1615 tw_dev->pending_head = TW_Q_START; 1616 tw_dev->pending_tail = TW_Q_START; 1617 tw_dev->reset_print = 0; 1618 1619 spin_unlock_irqrestore(tw_dev->host->host_lock, flags); 1620 1621 if (twa_reset_sequence(tw_dev, 1)) 1622 goto out; 1623 1624 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); 1625 clear_bit(TW_IN_RESET, &tw_dev->flags); 1626 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; 1627 1628 retval = 0; 1629out: 1630 return retval; 1631} /* End twa_reset_device_extension() */ 1632 1633/* This function will reset a controller */ 1634static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset) 1635{ 1636 int tries = 0, retval = 1, flashed = 0, do_soft_reset = soft_reset; 1637 1638 while (tries < TW_MAX_RESET_TRIES) { 1639 if (do_soft_reset) { 1640 TW_SOFT_RESET(tw_dev); 1641 /* Clear pchip/response queue on 9550SX */ 1642 if (twa_empty_response_queue_large(tw_dev)) { 1643 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x36, "Response queue (large) empty failed during reset sequence"); 1644 do_soft_reset = 1; 1645 tries++; 1646 continue; 1647 } 1648 } 1649 1650 /* Make sure controller is in a good state */ 1651 if (twa_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY | (do_soft_reset == 1 ? TW_STATUS_ATTENTION_INTERRUPT : 0), 60)) { 1652 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Microcontroller not ready during reset sequence"); 1653 do_soft_reset = 1; 1654 tries++; 1655 continue; 1656 } 1657 1658 /* Empty response queue */ 1659 if (twa_empty_response_queue(tw_dev)) { 1660 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Response queue empty failed during reset sequence"); 1661 do_soft_reset = 1; 1662 tries++; 1663 continue; 1664 } 1665 1666 flashed = 0; 1667 1668 /* Check for compatibility/flash */ 1669 if (twa_check_srl(tw_dev, &flashed)) { 1670 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Compatibility check failed during reset sequence"); 1671 do_soft_reset = 1; 1672 tries++; 1673 continue; 1674 } else { 1675 if (flashed) { 1676 tries++; 1677 continue; 1678 } 1679 } 1680 1681 /* Drain the AEN queue */ 1682 if (twa_aen_drain_queue(tw_dev, soft_reset)) { 1683 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x22, "AEN drain failed during reset sequence"); 1684 do_soft_reset = 1; 1685 tries++; 1686 continue; 1687 } 1688 1689 /* If we got here, controller is in a good state */ 1690 retval = 0; 1691 goto out; 1692 } 1693out: 1694 return retval; 1695} /* End twa_reset_sequence() */ 1696 1697/* This funciton returns unit geometry in cylinders/heads/sectors */ 1698static int twa_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) 1699{ 1700 int heads, sectors, cylinders; 1701 1702 if (capacity >= 0x200000) { 1703 heads = 255; 1704 sectors = 63; 1705 cylinders = sector_div(capacity, heads * sectors); 1706 } else { 1707 heads = 64; 1708 sectors = 32; 1709 cylinders = sector_div(capacity, heads * sectors); 1710 } 1711 1712 geom[0] = heads; 1713 geom[1] = sectors; 1714 geom[2] = cylinders; 1715 1716 return 0; 1717} /* End twa_scsi_biosparam() */ 1718 1719/* This is the new scsi eh reset function */ 1720static int twa_scsi_eh_reset(struct scsi_cmnd *SCpnt) 1721{ 1722 TW_Device_Extension *tw_dev = NULL; 1723 int retval = FAILED; 1724 1725 tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; 1726 1727 tw_dev->num_resets++; 1728 1729 sdev_printk(KERN_WARNING, SCpnt->device, 1730 "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n", 1731 TW_DRIVER, 0x2c, SCpnt->cmnd[0]); 1732 1733 /* Make sure we are not issuing an ioctl or resetting from ioctl */ 1734 mutex_lock(&tw_dev->ioctl_lock); 1735 1736 /* Now reset the card and some of the device extension data */ 1737 if (twa_reset_device_extension(tw_dev)) { 1738 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2b, "Controller reset failed during scsi host reset"); 1739 goto out; 1740 } 1741 1742 retval = SUCCESS; 1743out: 1744 mutex_unlock(&tw_dev->ioctl_lock); 1745 return retval; 1746} /* End twa_scsi_eh_reset() */ 1747 1748/* This is the main scsi queue function to handle scsi opcodes */ 1749static int twa_scsi_queue_lck(struct scsi_cmnd *SCpnt) 1750{ 1751 void (*done)(struct scsi_cmnd *) = scsi_done; 1752 int request_id, retval; 1753 TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; 1754 1755 /* If we are resetting due to timed out ioctl, report as busy */ 1756 if (test_bit(TW_IN_RESET, &tw_dev->flags)) { 1757 retval = SCSI_MLQUEUE_HOST_BUSY; 1758 goto out; 1759 } 1760 1761 /* Check if this FW supports luns */ 1762 if ((SCpnt->device->lun != 0) && (tw_dev->tw_compat_info.working_srl < TW_FW_SRL_LUNS_SUPPORTED)) { 1763 SCpnt->result = (DID_BAD_TARGET << 16); 1764 done(SCpnt); 1765 retval = 0; 1766 goto out; 1767 } 1768 1769 /* Get a free request id */ 1770 twa_get_request_id(tw_dev, &request_id); 1771 1772 /* Save the scsi command for use by the ISR */ 1773 tw_dev->srb[request_id] = SCpnt; 1774 1775 retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); 1776 switch (retval) { 1777 case SCSI_MLQUEUE_HOST_BUSY: 1778 if (twa_command_mapped(SCpnt)) 1779 scsi_dma_unmap(SCpnt); 1780 twa_free_request_id(tw_dev, request_id); 1781 break; 1782 case 1: 1783 SCpnt->result = (DID_ERROR << 16); 1784 if (twa_command_mapped(SCpnt)) 1785 scsi_dma_unmap(SCpnt); 1786 done(SCpnt); 1787 tw_dev->state[request_id] = TW_S_COMPLETED; 1788 twa_free_request_id(tw_dev, request_id); 1789 retval = 0; 1790 } 1791out: 1792 return retval; 1793} /* End twa_scsi_queue() */ 1794 1795static DEF_SCSI_QCMD(twa_scsi_queue) 1796 1797/* This function hands scsi cdb's to the firmware */ 1798static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, 1799 unsigned char *cdb, int use_sg, 1800 TW_SG_Entry *sglistarg) 1801{ 1802 TW_Command_Full *full_command_packet; 1803 TW_Command_Apache *command_packet; 1804 u32 num_sectors = 0x0; 1805 int i, sg_count; 1806 struct scsi_cmnd *srb = NULL; 1807 struct scatterlist *sg; 1808 int retval = 1; 1809 1810 if (tw_dev->srb[request_id]) 1811 srb = tw_dev->srb[request_id]; 1812 1813 /* Initialize command packet */ 1814 full_command_packet = tw_dev->command_packet_virt[request_id]; 1815 full_command_packet->header.header_desc.size_header = 128; 1816 full_command_packet->header.status_block.error = 0; 1817 full_command_packet->header.status_block.severity__reserved = 0; 1818 1819 command_packet = &full_command_packet->command.newcommand; 1820 command_packet->status = 0; 1821 command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI); 1822 1823 /* We forced 16 byte cdb use earlier */ 1824 if (!cdb) 1825 memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN); 1826 else 1827 memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN); 1828 1829 if (srb) { 1830 command_packet->unit = srb->device->id; 1831 command_packet->request_id__lunl = 1832 TW_REQ_LUN_IN(srb->device->lun, request_id); 1833 } else { 1834 command_packet->request_id__lunl = 1835 TW_REQ_LUN_IN(0, request_id); 1836 command_packet->unit = 0; 1837 } 1838 1839 command_packet->sgl_offset = 16; 1840 1841 if (!sglistarg) { 1842 /* Map sglist from scsi layer to cmd packet */ 1843 1844 if (scsi_sg_count(srb)) { 1845 if (!twa_command_mapped(srb)) { 1846 if (srb->sc_data_direction == DMA_TO_DEVICE || 1847 srb->sc_data_direction == DMA_BIDIRECTIONAL) 1848 scsi_sg_copy_to_buffer(srb, 1849 tw_dev->generic_buffer_virt[request_id], 1850 TW_SECTOR_SIZE); 1851 command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); 1852 command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH); 1853 } else { 1854 sg_count = scsi_dma_map(srb); 1855 if (sg_count < 0) 1856 goto out; 1857 1858 scsi_for_each_sg(srb, sg, sg_count, i) { 1859 command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg)); 1860 command_packet->sg_list[i].length = cpu_to_le32(sg_dma_len(sg)); 1861 if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { 1862 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi"); 1863 goto out; 1864 } 1865 } 1866 } 1867 command_packet->sgl_entries__lunh = TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id])); 1868 } 1869 } else { 1870 /* Internal cdb post */ 1871 for (i = 0; i < use_sg; i++) { 1872 command_packet->sg_list[i].address = sglistarg[i].address; 1873 command_packet->sg_list[i].length = sglistarg[i].length; 1874 if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { 1875 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2f, "Found unaligned sgl address during internal post"); 1876 goto out; 1877 } 1878 } 1879 command_packet->sgl_entries__lunh = TW_REQ_LUN_IN(0, use_sg); 1880 } 1881 1882 if (srb) { 1883 if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) 1884 num_sectors = (u32)srb->cmnd[4]; 1885 1886 if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) 1887 num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); 1888 } 1889 1890 /* Update sector statistic */ 1891 tw_dev->sector_count = num_sectors; 1892 if (tw_dev->sector_count > tw_dev->max_sector_count) 1893 tw_dev->max_sector_count = tw_dev->sector_count; 1894 1895 /* Update SG statistics */ 1896 if (srb) { 1897 tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]); 1898 if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) 1899 tw_dev->max_sgl_entries = tw_dev->sgl_entries; 1900 } 1901 1902 /* Now post the command to the board */ 1903 if (srb) { 1904 retval = twa_post_command_packet(tw_dev, request_id, 0); 1905 } else { 1906 twa_post_command_packet(tw_dev, request_id, 1); 1907 retval = 0; 1908 } 1909out: 1910 return retval; 1911} /* End twa_scsiop_execute_scsi() */ 1912 1913/* This function completes an execute scsi operation */ 1914static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id) 1915{ 1916 struct scsi_cmnd *cmd = tw_dev->srb[request_id]; 1917 1918 if (!twa_command_mapped(cmd) && 1919 (cmd->sc_data_direction == DMA_FROM_DEVICE || 1920 cmd->sc_data_direction == DMA_BIDIRECTIONAL)) { 1921 if (scsi_sg_count(cmd) == 1) { 1922 void *buf = tw_dev->generic_buffer_virt[request_id]; 1923 1924 scsi_sg_copy_from_buffer(cmd, buf, TW_SECTOR_SIZE); 1925 } 1926 } 1927} /* End twa_scsiop_execute_scsi_complete() */ 1928 1929/* This function tells the controller to shut down */ 1930static void __twa_shutdown(TW_Device_Extension *tw_dev) 1931{ 1932 /* Disable interrupts */ 1933 TW_DISABLE_INTERRUPTS(tw_dev); 1934 1935 /* Free up the IRQ */ 1936 free_irq(tw_dev->tw_pci_dev->irq, tw_dev); 1937 1938 printk(KERN_WARNING "3w-9xxx: Shutting down host %d.\n", tw_dev->host->host_no); 1939 1940 /* Tell the card we are shutting down */ 1941 if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { 1942 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x31, "Connection shutdown failed"); 1943 } else { 1944 printk(KERN_WARNING "3w-9xxx: Shutdown complete.\n"); 1945 } 1946 1947 /* Clear all interrupts just before exit */ 1948 TW_CLEAR_ALL_INTERRUPTS(tw_dev); 1949} /* End __twa_shutdown() */ 1950 1951/* Wrapper for __twa_shutdown */ 1952static void twa_shutdown(struct pci_dev *pdev) 1953{ 1954 struct Scsi_Host *host = pci_get_drvdata(pdev); 1955 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; 1956 1957 __twa_shutdown(tw_dev); 1958} /* End twa_shutdown() */ 1959 1960/* This function will look up a string */ 1961static char *twa_string_lookup(twa_message_type *table, unsigned int code) 1962{ 1963 int index; 1964 1965 for (index = 0; ((code != table[index].code) && 1966 (table[index].text != (char *)0)); index++); 1967 return(table[index].text); 1968} /* End twa_string_lookup() */ 1969 1970/* This function gets called when a disk is coming on-line */ 1971static int twa_slave_configure(struct scsi_device *sdev) 1972{ 1973 /* Force 60 second timeout */ 1974 blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); 1975 1976 return 0; 1977} /* End twa_slave_configure() */ 1978 1979static const struct scsi_host_template driver_template = { 1980 .module = THIS_MODULE, 1981 .name = "3ware 9000 Storage Controller", 1982 .queuecommand = twa_scsi_queue, 1983 .eh_host_reset_handler = twa_scsi_eh_reset, 1984 .bios_param = twa_scsi_biosparam, 1985 .change_queue_depth = scsi_change_queue_depth, 1986 .can_queue = TW_Q_LENGTH-2, 1987 .slave_configure = twa_slave_configure, 1988 .this_id = -1, 1989 .sg_tablesize = TW_APACHE_MAX_SGL_LENGTH, 1990 .max_sectors = TW_MAX_SECTORS, 1991 .cmd_per_lun = TW_MAX_CMDS_PER_LUN, 1992 .shost_groups = twa_host_groups, 1993 .emulated = 1, 1994 .no_write_same = 1, 1995}; 1996 1997/* This function will probe and initialize a card */ 1998static int twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) 1999{ 2000 struct Scsi_Host *host = NULL; 2001 TW_Device_Extension *tw_dev; 2002 unsigned long mem_addr, mem_len; 2003 int retval; 2004 2005 retval = pci_enable_device(pdev); 2006 if (retval) { 2007 TW_PRINTK(host, TW_DRIVER, 0x34, "Failed to enable pci device"); 2008 return -ENODEV; 2009 } 2010 2011 pci_set_master(pdev); 2012 pci_try_set_mwi(pdev); 2013 2014 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 2015 if (retval) 2016 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 2017 if (retval) { 2018 TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask"); 2019 retval = -ENODEV; 2020 goto out_disable_device; 2021 } 2022 2023 host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); 2024 if (!host) { 2025 TW_PRINTK(host, TW_DRIVER, 0x24, "Failed to allocate memory for device extension"); 2026 retval = -ENOMEM; 2027 goto out_disable_device; 2028 } 2029 tw_dev = (TW_Device_Extension *)host->hostdata; 2030 2031 /* Save values to device extension */ 2032 tw_dev->host = host; 2033 tw_dev->tw_pci_dev = pdev; 2034 2035 if (twa_initialize_device_extension(tw_dev)) { 2036 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension"); 2037 retval = -ENOMEM; 2038 goto out_free_device_extension; 2039 } 2040 2041 /* Request IO regions */ 2042 retval = pci_request_regions(pdev, "3w-9xxx"); 2043 if (retval) { 2044 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Failed to get mem region"); 2045 goto out_free_device_extension; 2046 } 2047 2048 if (pdev->device == PCI_DEVICE_ID_3WARE_9000) { 2049 mem_addr = pci_resource_start(pdev, 1); 2050 mem_len = pci_resource_len(pdev, 1); 2051 } else { 2052 mem_addr = pci_resource_start(pdev, 2); 2053 mem_len = pci_resource_len(pdev, 2); 2054 } 2055 2056 /* Save base address */ 2057 tw_dev->base_addr = ioremap(mem_addr, mem_len); 2058 if (!tw_dev->base_addr) { 2059 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap"); 2060 retval = -ENOMEM; 2061 goto out_release_mem_region; 2062 } 2063 2064 /* Disable interrupts on the card */ 2065 TW_DISABLE_INTERRUPTS(tw_dev); 2066 2067 /* Initialize the card */ 2068 if (twa_reset_sequence(tw_dev, 0)) { 2069 retval = -ENOMEM; 2070 goto out_iounmap; 2071 } 2072 2073 /* Set host specific parameters */ 2074 if ((pdev->device == PCI_DEVICE_ID_3WARE_9650SE) || 2075 (pdev->device == PCI_DEVICE_ID_3WARE_9690SA)) 2076 host->max_id = TW_MAX_UNITS_9650SE; 2077 else 2078 host->max_id = TW_MAX_UNITS; 2079 2080 host->max_cmd_len = TW_MAX_CDB_LEN; 2081 2082 /* Channels aren't supported by adapter */ 2083 host->max_lun = TW_MAX_LUNS(tw_dev->tw_compat_info.working_srl); 2084 host->max_channel = 0; 2085 2086 /* Register the card with the kernel SCSI layer */ 2087 retval = scsi_add_host(host, &pdev->dev); 2088 if (retval) { 2089 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x27, "scsi add host failed"); 2090 goto out_iounmap; 2091 } 2092 2093 pci_set_drvdata(pdev, host); 2094 2095 printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%lx, IRQ: %d.\n", 2096 host->host_no, mem_addr, pdev->irq); 2097 printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n", 2098 host->host_no, 2099 (char *)twa_get_param(tw_dev, 0, TW_VERSION_TABLE, 2100 TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH), 2101 (char *)twa_get_param(tw_dev, 1, TW_VERSION_TABLE, 2102 TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH), 2103 le32_to_cpu(*(__le32 *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE, 2104 TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH))); 2105 2106 /* Try to enable MSI */ 2107 if (use_msi && (pdev->device != PCI_DEVICE_ID_3WARE_9000) && 2108 !pci_enable_msi(pdev)) 2109 set_bit(TW_USING_MSI, &tw_dev->flags); 2110 2111 /* Now setup the interrupt handler */ 2112 retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev); 2113 if (retval) { 2114 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x30, "Error requesting IRQ"); 2115 goto out_remove_host; 2116 } 2117 2118 twa_device_extension_list[twa_device_extension_count] = tw_dev; 2119 twa_device_extension_count++; 2120 2121 /* Re-enable interrupts on the card */ 2122 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); 2123 2124 /* Finally, scan the host */ 2125 scsi_scan_host(host); 2126 2127 if (twa_major == -1) { 2128 if ((twa_major = register_chrdev (0, "twa", &twa_fops)) < 0) 2129 TW_PRINTK(host, TW_DRIVER, 0x29, "Failed to register character device"); 2130 } 2131 return 0; 2132 2133out_remove_host: 2134 if (test_bit(TW_USING_MSI, &tw_dev->flags)) 2135 pci_disable_msi(pdev); 2136 scsi_remove_host(host); 2137out_iounmap: 2138 iounmap(tw_dev->base_addr); 2139out_release_mem_region: 2140 pci_release_regions(pdev); 2141out_free_device_extension: 2142 twa_free_device_extension(tw_dev); 2143 scsi_host_put(host); 2144out_disable_device: 2145 pci_disable_device(pdev); 2146 2147 return retval; 2148} /* End twa_probe() */ 2149 2150/* This function is called to remove a device */ 2151static void twa_remove(struct pci_dev *pdev) 2152{ 2153 struct Scsi_Host *host = pci_get_drvdata(pdev); 2154 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; 2155 2156 scsi_remove_host(tw_dev->host); 2157 2158 /* Unregister character device */ 2159 if (twa_major >= 0) { 2160 unregister_chrdev(twa_major, "twa"); 2161 twa_major = -1; 2162 } 2163 2164 /* Shutdown the card */ 2165 __twa_shutdown(tw_dev); 2166 2167 /* Disable MSI if enabled */ 2168 if (test_bit(TW_USING_MSI, &tw_dev->flags)) 2169 pci_disable_msi(pdev); 2170 2171 /* Free IO remapping */ 2172 iounmap(tw_dev->base_addr); 2173 2174 /* Free up the mem region */ 2175 pci_release_regions(pdev); 2176 2177 /* Free up device extension resources */ 2178 twa_free_device_extension(tw_dev); 2179 2180 scsi_host_put(tw_dev->host); 2181 pci_disable_device(pdev); 2182 twa_device_extension_count--; 2183} /* End twa_remove() */ 2184 2185/* This function is called on PCI suspend */ 2186static int __maybe_unused twa_suspend(struct device *dev) 2187{ 2188 struct pci_dev *pdev = to_pci_dev(dev); 2189 struct Scsi_Host *host = pci_get_drvdata(pdev); 2190 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; 2191 2192 printk(KERN_WARNING "3w-9xxx: Suspending host %d.\n", tw_dev->host->host_no); 2193 2194 TW_DISABLE_INTERRUPTS(tw_dev); 2195 free_irq(tw_dev->tw_pci_dev->irq, tw_dev); 2196 2197 if (test_bit(TW_USING_MSI, &tw_dev->flags)) 2198 pci_disable_msi(pdev); 2199 2200 /* Tell the card we are shutting down */ 2201 if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { 2202 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x38, "Connection shutdown failed during suspend"); 2203 } else { 2204 printk(KERN_WARNING "3w-9xxx: Suspend complete.\n"); 2205 } 2206 TW_CLEAR_ALL_INTERRUPTS(tw_dev); 2207 2208 return 0; 2209} /* End twa_suspend() */ 2210 2211/* This function is called on PCI resume */ 2212static int __maybe_unused twa_resume(struct device *dev) 2213{ 2214 int retval = 0; 2215 struct pci_dev *pdev = to_pci_dev(dev); 2216 struct Scsi_Host *host = pci_get_drvdata(pdev); 2217 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; 2218 2219 printk(KERN_WARNING "3w-9xxx: Resuming host %d.\n", tw_dev->host->host_no); 2220 2221 pci_try_set_mwi(pdev); 2222 2223 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 2224 if (retval) 2225 retval = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); 2226 if (retval) { 2227 TW_PRINTK(host, TW_DRIVER, 0x40, "Failed to set dma mask during resume"); 2228 retval = -ENODEV; 2229 goto out_disable_device; 2230 } 2231 2232 /* Initialize the card */ 2233 if (twa_reset_sequence(tw_dev, 0)) { 2234 retval = -ENODEV; 2235 goto out_disable_device; 2236 } 2237 2238 /* Now setup the interrupt handler */ 2239 retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev); 2240 if (retval) { 2241 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x42, "Error requesting IRQ during resume"); 2242 retval = -ENODEV; 2243 goto out_disable_device; 2244 } 2245 2246 /* Now enable MSI if enabled */ 2247 if (test_bit(TW_USING_MSI, &tw_dev->flags)) 2248 pci_enable_msi(pdev); 2249 2250 /* Re-enable interrupts on the card */ 2251 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); 2252 2253 printk(KERN_WARNING "3w-9xxx: Resume complete.\n"); 2254 return 0; 2255 2256out_disable_device: 2257 scsi_remove_host(host); 2258 2259 return retval; 2260} /* End twa_resume() */ 2261 2262/* PCI Devices supported by this driver */ 2263static struct pci_device_id twa_pci_tbl[] = { 2264 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000, 2265 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 2266 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9550SX, 2267 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 2268 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9650SE, 2269 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 2270 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9690SA, 2271 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, 2272 { } 2273}; 2274MODULE_DEVICE_TABLE(pci, twa_pci_tbl); 2275 2276static SIMPLE_DEV_PM_OPS(twa_pm_ops, twa_suspend, twa_resume); 2277 2278/* pci_driver initializer */ 2279static struct pci_driver twa_driver = { 2280 .name = "3w-9xxx", 2281 .id_table = twa_pci_tbl, 2282 .probe = twa_probe, 2283 .remove = twa_remove, 2284 .driver.pm = &twa_pm_ops, 2285 .shutdown = twa_shutdown 2286}; 2287 2288/* This function is called on driver initialization */ 2289static int __init twa_init(void) 2290{ 2291 printk(KERN_WARNING "3ware 9000 Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); 2292 2293 return pci_register_driver(&twa_driver); 2294} /* End twa_init() */ 2295 2296/* This function is called on driver exit */ 2297static void __exit twa_exit(void) 2298{ 2299 pci_unregister_driver(&twa_driver); 2300} /* End twa_exit() */ 2301 2302module_init(twa_init); 2303module_exit(twa_exit); 2304 2305