Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 2 | 3w-9xxx.c -- 3ware 9000 Storage Controller device driver for Linux. |
| 3 | |
| 4 | Written By: Adam Radford <linuxraid@amcc.com> |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 5 | Modifications By: Tom Couch <linuxraid@amcc.com> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 7 | Copyright (C) 2004-2006 Applied Micro Circuits Corporation. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; version 2 of the License. |
| 12 | |
| 13 | This program is distributed in the hope that it will be useful, |
| 14 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | GNU General Public License for more details. |
| 17 | |
| 18 | NO WARRANTY |
| 19 | THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR |
| 20 | CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT |
| 21 | LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, |
| 22 | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is |
| 23 | solely responsible for determining the appropriateness of using and |
| 24 | distributing the Program and assumes all risks associated with its |
| 25 | exercise of rights under this Agreement, including but not limited to |
| 26 | the risks and costs of program errors, damage to or loss of data, |
| 27 | programs or equipment, and unavailability or interruption of operations. |
| 28 | |
| 29 | DISCLAIMER OF LIABILITY |
| 30 | NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY |
| 31 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| 32 | DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND |
| 33 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
| 34 | TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
| 35 | USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED |
| 36 | HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES |
| 37 | |
| 38 | You should have received a copy of the GNU General Public License |
| 39 | along with this program; if not, write to the Free Software |
| 40 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 41 | |
| 42 | Bugs/Comments/Suggestions should be mailed to: |
| 43 | linuxraid@amcc.com |
| 44 | |
| 45 | For more information, goto: |
| 46 | http://www.amcc.com |
| 47 | |
| 48 | Note: This version of the driver does not contain a bundled firmware |
| 49 | image. |
| 50 | |
| 51 | History |
| 52 | ------- |
| 53 | 2.26.02.000 - Driver cleanup for kernel submission. |
| 54 | 2.26.02.001 - Replace schedule_timeout() calls with msleep(). |
| 55 | 2.26.02.002 - Add support for PAE mode. |
| 56 | Add lun support. |
| 57 | Fix twa_remove() to free irq handler/unregister_chrdev() |
| 58 | before shutting down card. |
| 59 | Change to new 'change_queue_depth' api. |
| 60 | Fix 'handled=1' ISR usage, remove bogus IRQ check. |
| 61 | Remove un-needed eh_abort handler. |
| 62 | Add support for embedded firmware error strings. |
adam radford | d327d08 | 2005-09-09 15:55:13 -0700 | [diff] [blame] | 63 | 2.26.02.003 - Correctly handle single sgl's with use_sg=1. |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 64 | 2.26.02.004 - Add support for 9550SX controllers. |
adam radford | 62288f1 | 2006-02-05 14:51:43 -0800 | [diff] [blame] | 65 | 2.26.02.005 - Fix use_sg == 0 mapping on systems with 4GB or higher. |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 66 | 2.26.02.006 - Fix 9550SX pchip reset timeout. |
| 67 | Add big endian support. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | */ |
| 69 | |
| 70 | #include <linux/module.h> |
| 71 | #include <linux/reboot.h> |
| 72 | #include <linux/spinlock.h> |
| 73 | #include <linux/interrupt.h> |
| 74 | #include <linux/moduleparam.h> |
| 75 | #include <linux/errno.h> |
| 76 | #include <linux/types.h> |
| 77 | #include <linux/delay.h> |
| 78 | #include <linux/pci.h> |
| 79 | #include <linux/time.h> |
Jes Sorensen | a12e25bd | 2006-01-11 08:39:45 -0500 | [diff] [blame] | 80 | #include <linux/mutex.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 81 | #include <asm/io.h> |
| 82 | #include <asm/irq.h> |
| 83 | #include <asm/uaccess.h> |
| 84 | #include <scsi/scsi.h> |
| 85 | #include <scsi/scsi_host.h> |
| 86 | #include <scsi/scsi_tcq.h> |
| 87 | #include <scsi/scsi_cmnd.h> |
| 88 | #include "3w-9xxx.h" |
| 89 | |
| 90 | /* Globals */ |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 91 | #define TW_DRIVER_VERSION "2.26.02.006" |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 92 | static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT]; |
| 93 | static unsigned int twa_device_extension_count; |
| 94 | static int twa_major = -1; |
| 95 | extern struct timezone sys_tz; |
| 96 | |
| 97 | /* Module parameters */ |
| 98 | MODULE_AUTHOR ("AMCC"); |
| 99 | MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver"); |
| 100 | MODULE_LICENSE("GPL"); |
| 101 | MODULE_VERSION(TW_DRIVER_VERSION); |
| 102 | |
| 103 | /* Function prototypes */ |
| 104 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header); |
| 105 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id); |
| 106 | static char *twa_aen_severity_lookup(unsigned char severity_code); |
| 107 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id); |
| 108 | static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); |
| 109 | static int twa_chrdev_open(struct inode *inode, struct file *file); |
| 110 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host); |
| 111 | static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id); |
| 112 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id); |
| 113 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, |
| 114 | u32 set_features, unsigned short current_fw_srl, |
| 115 | unsigned short current_fw_arch_id, |
| 116 | unsigned short current_fw_branch, |
| 117 | unsigned short current_fw_build, |
| 118 | unsigned short *fw_on_ctlr_srl, |
| 119 | unsigned short *fw_on_ctlr_arch_id, |
| 120 | unsigned short *fw_on_ctlr_branch, |
| 121 | unsigned short *fw_on_ctlr_build, |
| 122 | u32 *init_connect_result); |
| 123 | static void twa_load_sgl(TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length); |
| 124 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds); |
| 125 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds); |
| 126 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal); |
| 127 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset); |
| 128 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset); |
| 129 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg); |
| 130 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id); |
| 131 | static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code); |
| 132 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id); |
| 133 | |
| 134 | /* Functions */ |
| 135 | |
| 136 | /* Show some statistics about the card */ |
| 137 | static ssize_t twa_show_stats(struct class_device *class_dev, char *buf) |
| 138 | { |
| 139 | struct Scsi_Host *host = class_to_shost(class_dev); |
| 140 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
| 141 | unsigned long flags = 0; |
| 142 | ssize_t len; |
| 143 | |
| 144 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 145 | len = snprintf(buf, PAGE_SIZE, "3w-9xxx Driver version: %s\n" |
| 146 | "Current commands posted: %4d\n" |
| 147 | "Max commands posted: %4d\n" |
| 148 | "Current pending commands: %4d\n" |
| 149 | "Max pending commands: %4d\n" |
| 150 | "Last sgl length: %4d\n" |
| 151 | "Max sgl length: %4d\n" |
| 152 | "Last sector count: %4d\n" |
| 153 | "Max sector count: %4d\n" |
| 154 | "SCSI Host Resets: %4d\n" |
| 155 | "AEN's: %4d\n", |
| 156 | TW_DRIVER_VERSION, |
| 157 | tw_dev->posted_request_count, |
| 158 | tw_dev->max_posted_request_count, |
| 159 | tw_dev->pending_request_count, |
| 160 | tw_dev->max_pending_request_count, |
| 161 | tw_dev->sgl_entries, |
| 162 | tw_dev->max_sgl_entries, |
| 163 | tw_dev->sector_count, |
| 164 | tw_dev->max_sector_count, |
| 165 | tw_dev->num_resets, |
| 166 | tw_dev->aen_count); |
| 167 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 168 | return len; |
| 169 | } /* End twa_show_stats() */ |
| 170 | |
| 171 | /* This function will set a devices queue depth */ |
| 172 | static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth) |
| 173 | { |
| 174 | if (queue_depth > TW_Q_LENGTH-2) |
| 175 | queue_depth = TW_Q_LENGTH-2; |
| 176 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); |
| 177 | return queue_depth; |
| 178 | } /* End twa_change_queue_depth() */ |
| 179 | |
| 180 | /* Create sysfs 'stats' entry */ |
| 181 | static struct class_device_attribute twa_host_stats_attr = { |
| 182 | .attr = { |
| 183 | .name = "stats", |
| 184 | .mode = S_IRUGO, |
| 185 | }, |
| 186 | .show = twa_show_stats |
| 187 | }; |
| 188 | |
| 189 | /* Host attributes initializer */ |
| 190 | static struct class_device_attribute *twa_host_attrs[] = { |
| 191 | &twa_host_stats_attr, |
| 192 | NULL, |
| 193 | }; |
| 194 | |
| 195 | /* File operations struct for character device */ |
| 196 | static struct file_operations twa_fops = { |
| 197 | .owner = THIS_MODULE, |
| 198 | .ioctl = twa_chrdev_ioctl, |
| 199 | .open = twa_chrdev_open, |
| 200 | .release = NULL |
| 201 | }; |
| 202 | |
| 203 | /* This function will complete an aen request from the isr */ |
| 204 | static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id) |
| 205 | { |
| 206 | TW_Command_Full *full_command_packet; |
| 207 | TW_Command *command_packet; |
| 208 | TW_Command_Apache_Header *header; |
| 209 | unsigned short aen; |
| 210 | int retval = 1; |
| 211 | |
| 212 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; |
| 213 | tw_dev->posted_request_count--; |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 214 | aen = le16_to_cpu(header->status_block.error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 215 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 216 | command_packet = &full_command_packet->command.oldcommand; |
| 217 | |
| 218 | /* First check for internal completion of set param for time sync */ |
| 219 | if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) { |
| 220 | /* Keep reading the queue in case there are more aen's */ |
| 221 | if (twa_aen_read_queue(tw_dev, request_id)) |
| 222 | goto out2; |
| 223 | else { |
| 224 | retval = 0; |
| 225 | goto out; |
| 226 | } |
| 227 | } |
| 228 | |
| 229 | switch (aen) { |
| 230 | case TW_AEN_QUEUE_EMPTY: |
| 231 | /* Quit reading the queue if this is the last one */ |
| 232 | break; |
| 233 | case TW_AEN_SYNC_TIME_WITH_HOST: |
| 234 | twa_aen_sync_time(tw_dev, request_id); |
| 235 | retval = 0; |
| 236 | goto out; |
| 237 | default: |
| 238 | twa_aen_queue_event(tw_dev, header); |
| 239 | |
| 240 | /* If there are more aen's, keep reading the queue */ |
| 241 | if (twa_aen_read_queue(tw_dev, request_id)) |
| 242 | goto out2; |
| 243 | else { |
| 244 | retval = 0; |
| 245 | goto out; |
| 246 | } |
| 247 | } |
| 248 | retval = 0; |
| 249 | out2: |
| 250 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 251 | twa_free_request_id(tw_dev, request_id); |
| 252 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); |
| 253 | out: |
| 254 | return retval; |
| 255 | } /* End twa_aen_complete() */ |
| 256 | |
| 257 | /* This function will drain aen queue */ |
| 258 | static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) |
| 259 | { |
| 260 | int request_id = 0; |
| 261 | char cdb[TW_MAX_CDB_LEN]; |
| 262 | TW_SG_Entry sglist[1]; |
| 263 | int finished = 0, count = 0; |
| 264 | TW_Command_Full *full_command_packet; |
| 265 | TW_Command_Apache_Header *header; |
| 266 | unsigned short aen; |
| 267 | int first_reset = 0, queue = 0, retval = 1; |
| 268 | |
| 269 | if (no_check_reset) |
| 270 | first_reset = 0; |
| 271 | else |
| 272 | first_reset = 1; |
| 273 | |
| 274 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 275 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); |
| 276 | |
| 277 | /* Initialize cdb */ |
| 278 | memset(&cdb, 0, TW_MAX_CDB_LEN); |
| 279 | cdb[0] = REQUEST_SENSE; /* opcode */ |
| 280 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ |
| 281 | |
| 282 | /* Initialize sglist */ |
| 283 | memset(&sglist, 0, sizeof(TW_SG_Entry)); |
| 284 | sglist[0].length = TW_SECTOR_SIZE; |
| 285 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; |
| 286 | |
| 287 | if (sglist[0].address & TW_ALIGNMENT_9000_SGL) { |
| 288 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Found unaligned address during AEN drain"); |
| 289 | goto out; |
| 290 | } |
| 291 | |
| 292 | /* Mark internal command */ |
| 293 | tw_dev->srb[request_id] = NULL; |
| 294 | |
| 295 | do { |
| 296 | /* Send command to the board */ |
| 297 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { |
| 298 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Error posting request sense"); |
| 299 | goto out; |
| 300 | } |
| 301 | |
| 302 | /* Now poll for completion */ |
| 303 | if (twa_poll_response(tw_dev, request_id, 30)) { |
| 304 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "No valid response while draining AEN queue"); |
| 305 | tw_dev->posted_request_count--; |
| 306 | goto out; |
| 307 | } |
| 308 | |
| 309 | tw_dev->posted_request_count--; |
| 310 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 311 | aen = le16_to_cpu(header->status_block.error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 312 | queue = 0; |
| 313 | count++; |
| 314 | |
| 315 | switch (aen) { |
| 316 | case TW_AEN_QUEUE_EMPTY: |
| 317 | if (first_reset != 1) |
| 318 | goto out; |
| 319 | else |
| 320 | finished = 1; |
| 321 | break; |
| 322 | case TW_AEN_SOFT_RESET: |
| 323 | if (first_reset == 0) |
| 324 | first_reset = 1; |
| 325 | else |
| 326 | queue = 1; |
| 327 | break; |
| 328 | case TW_AEN_SYNC_TIME_WITH_HOST: |
| 329 | break; |
| 330 | default: |
| 331 | queue = 1; |
| 332 | } |
| 333 | |
| 334 | /* Now queue an event info */ |
| 335 | if (queue) |
| 336 | twa_aen_queue_event(tw_dev, header); |
| 337 | } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN)); |
| 338 | |
| 339 | if (count == TW_MAX_AEN_DRAIN) |
| 340 | goto out; |
| 341 | |
| 342 | retval = 0; |
| 343 | out: |
| 344 | tw_dev->state[request_id] = TW_S_INITIAL; |
| 345 | return retval; |
| 346 | } /* End twa_aen_drain_queue() */ |
| 347 | |
| 348 | /* This function will queue an event */ |
| 349 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header) |
| 350 | { |
| 351 | u32 local_time; |
| 352 | struct timeval time; |
| 353 | TW_Event *event; |
| 354 | unsigned short aen; |
| 355 | char host[16]; |
| 356 | char *error_str; |
| 357 | |
| 358 | tw_dev->aen_count++; |
| 359 | |
| 360 | /* Fill out event info */ |
| 361 | event = tw_dev->event_queue[tw_dev->error_index]; |
| 362 | |
| 363 | /* Check for clobber */ |
| 364 | host[0] = '\0'; |
| 365 | if (tw_dev->host) { |
| 366 | sprintf(host, " scsi%d:", tw_dev->host->host_no); |
| 367 | if (event->retrieved == TW_AEN_NOT_RETRIEVED) |
| 368 | tw_dev->aen_clobber = 1; |
| 369 | } |
| 370 | |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 371 | aen = le16_to_cpu(header->status_block.error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 372 | memset(event, 0, sizeof(TW_Event)); |
| 373 | |
| 374 | event->severity = TW_SEV_OUT(header->status_block.severity__reserved); |
| 375 | do_gettimeofday(&time); |
| 376 | local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60)); |
| 377 | event->time_stamp_sec = local_time; |
| 378 | event->aen_code = aen; |
| 379 | event->retrieved = TW_AEN_NOT_RETRIEVED; |
| 380 | event->sequence_id = tw_dev->error_sequence_id; |
| 381 | tw_dev->error_sequence_id++; |
| 382 | |
| 383 | /* Check for embedded error string */ |
| 384 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]); |
| 385 | |
| 386 | header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0'; |
| 387 | event->parameter_len = strlen(header->err_specific_desc); |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 388 | memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + (error_str[0] == '\0' ? 0 : (1 + strlen(error_str)))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | if (event->severity != TW_AEN_SEVERITY_DEBUG) |
| 390 | printk(KERN_WARNING "3w-9xxx:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n", |
| 391 | host, |
| 392 | twa_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)), |
| 393 | TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, |
| 394 | error_str[0] == '\0' ? twa_string_lookup(twa_aen_table, aen) : error_str, |
| 395 | header->err_specific_desc); |
| 396 | else |
| 397 | tw_dev->aen_count--; |
| 398 | |
| 399 | if ((tw_dev->error_index + 1) == TW_Q_LENGTH) |
| 400 | tw_dev->event_queue_wrapped = 1; |
| 401 | tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH; |
| 402 | } /* End twa_aen_queue_event() */ |
| 403 | |
| 404 | /* This function will read the aen queue from the isr */ |
| 405 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) |
| 406 | { |
| 407 | char cdb[TW_MAX_CDB_LEN]; |
| 408 | TW_SG_Entry sglist[1]; |
| 409 | TW_Command_Full *full_command_packet; |
| 410 | int retval = 1; |
| 411 | |
| 412 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 413 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); |
| 414 | |
| 415 | /* Initialize cdb */ |
| 416 | memset(&cdb, 0, TW_MAX_CDB_LEN); |
| 417 | cdb[0] = REQUEST_SENSE; /* opcode */ |
| 418 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ |
| 419 | |
| 420 | /* Initialize sglist */ |
| 421 | memset(&sglist, 0, sizeof(TW_SG_Entry)); |
| 422 | sglist[0].length = TW_SECTOR_SIZE; |
| 423 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; |
| 424 | |
| 425 | /* Mark internal command */ |
| 426 | tw_dev->srb[request_id] = NULL; |
| 427 | |
| 428 | /* Now post the command packet */ |
| 429 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { |
| 430 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "Post failed while reading AEN queue"); |
| 431 | goto out; |
| 432 | } |
| 433 | retval = 0; |
| 434 | out: |
| 435 | return retval; |
| 436 | } /* End twa_aen_read_queue() */ |
| 437 | |
| 438 | /* This function will look up an AEN severity string */ |
| 439 | static char *twa_aen_severity_lookup(unsigned char severity_code) |
| 440 | { |
| 441 | char *retval = NULL; |
| 442 | |
| 443 | if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) || |
| 444 | (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG)) |
| 445 | goto out; |
| 446 | |
| 447 | retval = twa_aen_severity_table[severity_code]; |
| 448 | out: |
| 449 | return retval; |
| 450 | } /* End twa_aen_severity_lookup() */ |
| 451 | |
| 452 | /* This function will sync firmware time with the host time */ |
| 453 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) |
| 454 | { |
| 455 | u32 schedulertime; |
| 456 | struct timeval utc; |
| 457 | TW_Command_Full *full_command_packet; |
| 458 | TW_Command *command_packet; |
| 459 | TW_Param_Apache *param; |
| 460 | u32 local_time; |
| 461 | |
| 462 | /* Fill out the command packet */ |
| 463 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 464 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); |
| 465 | command_packet = &full_command_packet->command.oldcommand; |
| 466 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); |
| 467 | command_packet->request_id = request_id; |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 468 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
| 469 | command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 470 | command_packet->size = TW_COMMAND_SIZE; |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 471 | command_packet->byte6_offset.parameter_count = cpu_to_le16(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 472 | |
| 473 | /* Setup the param */ |
| 474 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; |
| 475 | memset(param, 0, TW_SECTOR_SIZE); |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 476 | param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */ |
| 477 | param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */ |
| 478 | param->parameter_size_bytes = cpu_to_le16(4); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 479 | |
| 480 | /* Convert system time in UTC to local time seconds since last |
| 481 | Sunday 12:00AM */ |
| 482 | do_gettimeofday(&utc); |
| 483 | local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60)); |
| 484 | schedulertime = local_time - (3 * 86400); |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 485 | schedulertime = cpu_to_le32(schedulertime % 604800); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 486 | |
| 487 | memcpy(param->data, &schedulertime, sizeof(u32)); |
| 488 | |
| 489 | /* Mark internal command */ |
| 490 | tw_dev->srb[request_id] = NULL; |
| 491 | |
| 492 | /* Now post the command */ |
| 493 | twa_post_command_packet(tw_dev, request_id, 1); |
| 494 | } /* End twa_aen_sync_time() */ |
| 495 | |
| 496 | /* This function will allocate memory and check if it is correctly aligned */ |
| 497 | static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) |
| 498 | { |
| 499 | int i; |
| 500 | dma_addr_t dma_handle; |
| 501 | unsigned long *cpu_addr; |
| 502 | int retval = 1; |
| 503 | |
| 504 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); |
| 505 | if (!cpu_addr) { |
| 506 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed"); |
| 507 | goto out; |
| 508 | } |
| 509 | |
| 510 | if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) { |
| 511 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory"); |
| 512 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); |
| 513 | goto out; |
| 514 | } |
| 515 | |
| 516 | memset(cpu_addr, 0, size*TW_Q_LENGTH); |
| 517 | |
| 518 | for (i = 0; i < TW_Q_LENGTH; i++) { |
| 519 | switch(which) { |
| 520 | case 0: |
| 521 | tw_dev->command_packet_phys[i] = dma_handle+(i*size); |
| 522 | tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size)); |
| 523 | break; |
| 524 | case 1: |
| 525 | tw_dev->generic_buffer_phys[i] = dma_handle+(i*size); |
| 526 | tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); |
| 527 | break; |
| 528 | } |
| 529 | } |
| 530 | retval = 0; |
| 531 | out: |
| 532 | return retval; |
| 533 | } /* End twa_allocate_memory() */ |
| 534 | |
| 535 | /* This function will check the status register for unexpected bits */ |
| 536 | static int twa_check_bits(u32 status_reg_value) |
| 537 | { |
| 538 | int retval = 1; |
| 539 | |
| 540 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) |
| 541 | goto out; |
| 542 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) |
| 543 | goto out; |
| 544 | |
| 545 | retval = 0; |
| 546 | out: |
| 547 | return retval; |
| 548 | } /* End twa_check_bits() */ |
| 549 | |
| 550 | /* This function will check the srl and decide if we are compatible */ |
| 551 | static int twa_check_srl(TW_Device_Extension *tw_dev, int *flashed) |
| 552 | { |
| 553 | int retval = 1; |
| 554 | unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0; |
| 555 | unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0; |
| 556 | u32 init_connect_result = 0; |
| 557 | |
| 558 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, |
| 559 | TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL, |
| 560 | TW_9000_ARCH_ID, TW_CURRENT_DRIVER_BRANCH, |
| 561 | TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl, |
| 562 | &fw_on_ctlr_arch_id, &fw_on_ctlr_branch, |
| 563 | &fw_on_ctlr_build, &init_connect_result)) { |
| 564 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "Initconnection failed while checking SRL"); |
| 565 | goto out; |
| 566 | } |
| 567 | |
| 568 | tw_dev->working_srl = fw_on_ctlr_srl; |
| 569 | tw_dev->working_branch = fw_on_ctlr_branch; |
| 570 | tw_dev->working_build = fw_on_ctlr_build; |
| 571 | |
| 572 | /* Try base mode compatibility */ |
| 573 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { |
| 574 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, |
| 575 | TW_EXTENDED_INIT_CONNECT, |
| 576 | TW_BASE_FW_SRL, TW_9000_ARCH_ID, |
| 577 | TW_BASE_FW_BRANCH, TW_BASE_FW_BUILD, |
| 578 | &fw_on_ctlr_srl, &fw_on_ctlr_arch_id, |
| 579 | &fw_on_ctlr_branch, &fw_on_ctlr_build, |
| 580 | &init_connect_result)) { |
| 581 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Initconnection (base mode) failed while checking SRL"); |
| 582 | goto out; |
| 583 | } |
| 584 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { |
| 585 | if (TW_CURRENT_DRIVER_SRL > fw_on_ctlr_srl) { |
| 586 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x32, "Firmware and driver incompatibility: please upgrade firmware"); |
| 587 | } else { |
| 588 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x33, "Firmware and driver incompatibility: please upgrade driver"); |
| 589 | } |
| 590 | goto out; |
| 591 | } |
| 592 | tw_dev->working_srl = TW_BASE_FW_SRL; |
| 593 | tw_dev->working_branch = TW_BASE_FW_BRANCH; |
| 594 | tw_dev->working_build = TW_BASE_FW_BUILD; |
| 595 | } |
| 596 | retval = 0; |
| 597 | out: |
| 598 | return retval; |
| 599 | } /* End twa_check_srl() */ |
| 600 | |
| 601 | /* This function handles ioctl for the character device */ |
| 602 | static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) |
| 603 | { |
| 604 | long timeout; |
| 605 | unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; |
| 606 | dma_addr_t dma_handle; |
| 607 | int request_id = 0; |
| 608 | unsigned int sequence_id = 0; |
| 609 | unsigned char event_index, start_index; |
| 610 | TW_Ioctl_Driver_Command driver_command; |
| 611 | TW_Ioctl_Buf_Apache *tw_ioctl; |
| 612 | TW_Lock *tw_lock; |
| 613 | TW_Command_Full *full_command_packet; |
| 614 | TW_Compatibility_Info *tw_compat_info; |
| 615 | TW_Event *event; |
| 616 | struct timeval current_time; |
| 617 | u32 current_time_ms; |
| 618 | TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)]; |
| 619 | int retval = TW_IOCTL_ERROR_OS_EFAULT; |
| 620 | void __user *argp = (void __user *)arg; |
| 621 | |
| 622 | /* Only let one of these through at a time */ |
Jes Sorensen | a12e25bd | 2006-01-11 08:39:45 -0500 | [diff] [blame] | 623 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 624 | retval = TW_IOCTL_ERROR_OS_EINTR; |
| 625 | goto out; |
| 626 | } |
| 627 | |
| 628 | /* First copy down the driver command */ |
| 629 | if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command))) |
| 630 | goto out2; |
| 631 | |
| 632 | /* Check data buffer size */ |
| 633 | if (driver_command.buffer_length > TW_MAX_SECTORS * 512) { |
| 634 | retval = TW_IOCTL_ERROR_OS_EINVAL; |
| 635 | goto out2; |
| 636 | } |
| 637 | |
| 638 | /* Hardware can only do multiple of 512 byte transfers */ |
| 639 | data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511; |
| 640 | |
| 641 | /* Now allocate ioctl buf memory */ |
| 642 | cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, &dma_handle, GFP_KERNEL); |
| 643 | if (!cpu_addr) { |
| 644 | retval = TW_IOCTL_ERROR_OS_ENOMEM; |
| 645 | goto out2; |
| 646 | } |
| 647 | |
| 648 | tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr; |
| 649 | |
| 650 | /* Now copy down the entire ioctl */ |
| 651 | if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1)) |
| 652 | goto out3; |
| 653 | |
| 654 | /* See which ioctl we are doing */ |
| 655 | switch (cmd) { |
| 656 | case TW_IOCTL_FIRMWARE_PASS_THROUGH: |
| 657 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 658 | twa_get_request_id(tw_dev, &request_id); |
| 659 | |
| 660 | /* Flag internal command */ |
| 661 | tw_dev->srb[request_id] = NULL; |
| 662 | |
| 663 | /* Flag chrdev ioctl */ |
| 664 | tw_dev->chrdev_request_id = request_id; |
| 665 | |
| 666 | full_command_packet = &tw_ioctl->firmware_command; |
| 667 | |
| 668 | /* Load request id and sglist for both command types */ |
| 669 | twa_load_sgl(full_command_packet, request_id, dma_handle, data_buffer_length_adjusted); |
| 670 | |
| 671 | memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full)); |
| 672 | |
| 673 | /* Now post the command packet to the controller */ |
| 674 | twa_post_command_packet(tw_dev, request_id, 1); |
| 675 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 676 | |
| 677 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; |
| 678 | |
| 679 | /* Now wait for command to complete */ |
| 680 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); |
| 681 | |
| 682 | /* See if we reset while waiting for the ioctl to complete */ |
| 683 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) { |
| 684 | clear_bit(TW_IN_RESET, &tw_dev->flags); |
| 685 | retval = TW_IOCTL_ERROR_OS_ERESTARTSYS; |
| 686 | goto out3; |
| 687 | } |
| 688 | |
| 689 | /* We timed out, and didn't get an interrupt */ |
| 690 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { |
| 691 | /* Now we need to reset the board */ |
| 692 | printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n", |
| 693 | tw_dev->host->host_no, TW_DRIVER, 0xc, |
| 694 | cmd); |
| 695 | retval = TW_IOCTL_ERROR_OS_EIO; |
| 696 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 697 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 698 | twa_free_request_id(tw_dev, request_id); |
| 699 | tw_dev->posted_request_count--; |
| 700 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 701 | twa_reset_device_extension(tw_dev, 1); |
| 702 | goto out3; |
| 703 | } |
| 704 | |
| 705 | /* Now copy in the command packet response */ |
| 706 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full)); |
| 707 | |
| 708 | /* Now complete the io */ |
| 709 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
| 710 | tw_dev->posted_request_count--; |
| 711 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 712 | twa_free_request_id(tw_dev, request_id); |
| 713 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 714 | break; |
| 715 | case TW_IOCTL_GET_COMPATIBILITY_INFO: |
| 716 | tw_ioctl->driver_command.status = 0; |
| 717 | /* Copy compatiblity struct into ioctl data buffer */ |
| 718 | tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer; |
| 719 | strncpy(tw_compat_info->driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION)); |
| 720 | tw_compat_info->working_srl = tw_dev->working_srl; |
| 721 | tw_compat_info->working_branch = tw_dev->working_branch; |
| 722 | tw_compat_info->working_build = tw_dev->working_build; |
| 723 | tw_compat_info->driver_srl_high = TW_CURRENT_DRIVER_SRL; |
| 724 | tw_compat_info->driver_branch_high = TW_CURRENT_DRIVER_BRANCH; |
| 725 | tw_compat_info->driver_build_high = TW_CURRENT_DRIVER_BUILD; |
| 726 | tw_compat_info->driver_srl_low = TW_BASE_FW_SRL; |
| 727 | tw_compat_info->driver_branch_low = TW_BASE_FW_BRANCH; |
| 728 | tw_compat_info->driver_build_low = TW_BASE_FW_BUILD; |
| 729 | break; |
| 730 | case TW_IOCTL_GET_LAST_EVENT: |
| 731 | if (tw_dev->event_queue_wrapped) { |
| 732 | if (tw_dev->aen_clobber) { |
| 733 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; |
| 734 | tw_dev->aen_clobber = 0; |
| 735 | } else |
| 736 | tw_ioctl->driver_command.status = 0; |
| 737 | } else { |
| 738 | if (!tw_dev->error_index) { |
| 739 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; |
| 740 | break; |
| 741 | } |
| 742 | tw_ioctl->driver_command.status = 0; |
| 743 | } |
| 744 | event_index = (tw_dev->error_index - 1 + TW_Q_LENGTH) % TW_Q_LENGTH; |
| 745 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); |
| 746 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; |
| 747 | break; |
| 748 | case TW_IOCTL_GET_FIRST_EVENT: |
| 749 | if (tw_dev->event_queue_wrapped) { |
| 750 | if (tw_dev->aen_clobber) { |
| 751 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; |
| 752 | tw_dev->aen_clobber = 0; |
| 753 | } else |
| 754 | tw_ioctl->driver_command.status = 0; |
| 755 | event_index = tw_dev->error_index; |
| 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 | event_index = 0; |
| 763 | } |
| 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_NEXT_EVENT: |
| 768 | event = (TW_Event *)tw_ioctl->data_buffer; |
| 769 | sequence_id = event->sequence_id; |
| 770 | tw_ioctl->driver_command.status = 0; |
| 771 | |
| 772 | if (tw_dev->event_queue_wrapped) { |
| 773 | if (tw_dev->aen_clobber) { |
| 774 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; |
| 775 | tw_dev->aen_clobber = 0; |
| 776 | } |
| 777 | start_index = tw_dev->error_index; |
| 778 | } else { |
| 779 | if (!tw_dev->error_index) { |
| 780 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; |
| 781 | break; |
| 782 | } |
| 783 | start_index = 0; |
| 784 | } |
| 785 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id + 1) % TW_Q_LENGTH; |
| 786 | |
| 787 | if (!(tw_dev->event_queue[event_index]->sequence_id > sequence_id)) { |
| 788 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) |
| 789 | tw_dev->aen_clobber = 1; |
| 790 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; |
| 791 | break; |
| 792 | } |
| 793 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); |
| 794 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; |
| 795 | break; |
| 796 | case TW_IOCTL_GET_PREVIOUS_EVENT: |
| 797 | event = (TW_Event *)tw_ioctl->data_buffer; |
| 798 | sequence_id = event->sequence_id; |
| 799 | tw_ioctl->driver_command.status = 0; |
| 800 | |
| 801 | if (tw_dev->event_queue_wrapped) { |
| 802 | if (tw_dev->aen_clobber) { |
| 803 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; |
| 804 | tw_dev->aen_clobber = 0; |
| 805 | } |
| 806 | start_index = tw_dev->error_index; |
| 807 | } else { |
| 808 | if (!tw_dev->error_index) { |
| 809 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; |
| 810 | break; |
| 811 | } |
| 812 | start_index = 0; |
| 813 | } |
| 814 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id - 1) % TW_Q_LENGTH; |
| 815 | |
| 816 | if (!(tw_dev->event_queue[event_index]->sequence_id < sequence_id)) { |
| 817 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) |
| 818 | tw_dev->aen_clobber = 1; |
| 819 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; |
| 820 | break; |
| 821 | } |
| 822 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); |
| 823 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; |
| 824 | break; |
| 825 | case TW_IOCTL_GET_LOCK: |
| 826 | tw_lock = (TW_Lock *)tw_ioctl->data_buffer; |
| 827 | do_gettimeofday(¤t_time); |
| 828 | current_time_ms = (current_time.tv_sec * 1000) + (current_time.tv_usec / 1000); |
| 829 | |
| 830 | if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) || (current_time_ms >= tw_dev->ioctl_msec)) { |
| 831 | tw_dev->ioctl_sem_lock = 1; |
| 832 | tw_dev->ioctl_msec = current_time_ms + tw_lock->timeout_msec; |
| 833 | tw_ioctl->driver_command.status = 0; |
| 834 | tw_lock->time_remaining_msec = tw_lock->timeout_msec; |
| 835 | } else { |
| 836 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED; |
| 837 | tw_lock->time_remaining_msec = tw_dev->ioctl_msec - current_time_ms; |
| 838 | } |
| 839 | break; |
| 840 | case TW_IOCTL_RELEASE_LOCK: |
| 841 | if (tw_dev->ioctl_sem_lock == 1) { |
| 842 | tw_dev->ioctl_sem_lock = 0; |
| 843 | tw_ioctl->driver_command.status = 0; |
| 844 | } else { |
| 845 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED; |
| 846 | } |
| 847 | break; |
| 848 | default: |
| 849 | retval = TW_IOCTL_ERROR_OS_ENOTTY; |
| 850 | goto out3; |
| 851 | } |
| 852 | |
| 853 | /* Now copy the entire response to userspace */ |
| 854 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0) |
| 855 | retval = 0; |
| 856 | out3: |
| 857 | /* Now free ioctl buf memory */ |
| 858 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle); |
| 859 | out2: |
Jes Sorensen | a12e25bd | 2006-01-11 08:39:45 -0500 | [diff] [blame] | 860 | mutex_unlock(&tw_dev->ioctl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 861 | out: |
| 862 | return retval; |
| 863 | } /* End twa_chrdev_ioctl() */ |
| 864 | |
| 865 | /* This function handles open for the character device */ |
| 866 | static int twa_chrdev_open(struct inode *inode, struct file *file) |
| 867 | { |
| 868 | unsigned int minor_number; |
| 869 | int retval = TW_IOCTL_ERROR_OS_ENODEV; |
| 870 | |
| 871 | minor_number = iminor(inode); |
| 872 | if (minor_number >= twa_device_extension_count) |
| 873 | goto out; |
| 874 | retval = 0; |
| 875 | out: |
| 876 | return retval; |
| 877 | } /* End twa_chrdev_open() */ |
| 878 | |
| 879 | /* This function will print readable messages from status register errors */ |
| 880 | static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value) |
| 881 | { |
| 882 | int retval = 1; |
| 883 | |
| 884 | /* Check for various error conditions and handle them appropriately */ |
| 885 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { |
| 886 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "PCI Parity Error: clearing"); |
| 887 | writel(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
| 888 | } |
| 889 | |
| 890 | if (status_reg_value & TW_STATUS_PCI_ABORT) { |
| 891 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "PCI Abort: clearing"); |
| 892 | writel(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); |
| 893 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); |
| 894 | } |
| 895 | |
| 896 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { |
| 897 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Controller Queue Error: clearing"); |
| 898 | writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
| 899 | } |
| 900 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 901 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { |
| 902 | if (tw_dev->reset_print == 0) { |
| 903 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing"); |
| 904 | tw_dev->reset_print = 1; |
| 905 | } |
| 906 | goto out; |
| 907 | } |
| 908 | retval = 0; |
| 909 | out: |
| 910 | return retval; |
| 911 | } /* End twa_decode_bits() */ |
| 912 | |
| 913 | /* This function will empty the response queue */ |
| 914 | static int twa_empty_response_queue(TW_Device_Extension *tw_dev) |
| 915 | { |
| 916 | u32 status_reg_value, response_que_value; |
| 917 | int count = 0, retval = 1; |
| 918 | |
| 919 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 920 | |
| 921 | while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) { |
| 922 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
| 923 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 924 | count++; |
| 925 | } |
| 926 | if (count == TW_MAX_RESPONSE_DRAIN) |
| 927 | goto out; |
| 928 | |
| 929 | retval = 0; |
| 930 | out: |
| 931 | return retval; |
| 932 | } /* End twa_empty_response_queue() */ |
| 933 | |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 934 | /* This function will clear the pchip/response queue on 9550SX */ |
| 935 | static int twa_empty_response_queue_large(TW_Device_Extension *tw_dev) |
| 936 | { |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 937 | u32 response_que_value = 0; |
| 938 | unsigned long before; |
| 939 | int retval = 1; |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 940 | |
| 941 | if (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9550SX) { |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 942 | before = jiffies; |
| 943 | while ((response_que_value & TW_9550SX_DRAIN_COMPLETED) != TW_9550SX_DRAIN_COMPLETED) { |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 944 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR_LARGE(tw_dev)); |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 945 | if (time_after(jiffies, before + HZ * 30)) |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 946 | goto out; |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 947 | } |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 948 | /* P-chip settle time */ |
| 949 | msleep(500); |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 950 | retval = 0; |
| 951 | } else |
| 952 | retval = 0; |
| 953 | out: |
| 954 | return retval; |
| 955 | } /* End twa_empty_response_queue_large() */ |
| 956 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 957 | /* This function passes sense keys from firmware to scsi layer */ |
| 958 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host) |
| 959 | { |
| 960 | TW_Command_Full *full_command_packet; |
| 961 | unsigned short error; |
| 962 | int retval = 1; |
| 963 | char *error_str; |
| 964 | |
| 965 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 966 | |
| 967 | /* Check for embedded error string */ |
| 968 | error_str = &(full_command_packet->header.err_specific_desc[strlen(full_command_packet->header.err_specific_desc) + 1]); |
| 969 | |
| 970 | /* Don't print error for Logical unit not supported during rollcall */ |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 971 | error = le16_to_cpu(full_command_packet->header.status_block.error); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 972 | if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE)) { |
| 973 | if (print_host) |
| 974 | printk(KERN_WARNING "3w-9xxx: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n", |
| 975 | tw_dev->host->host_no, |
| 976 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, |
| 977 | full_command_packet->header.status_block.error, |
| 978 | error_str[0] == '\0' ? |
| 979 | twa_string_lookup(twa_error_table, |
| 980 | full_command_packet->header.status_block.error) : error_str, |
| 981 | full_command_packet->header.err_specific_desc); |
| 982 | else |
| 983 | printk(KERN_WARNING "3w-9xxx: ERROR: (0x%02X:0x%04X): %s:%s.\n", |
| 984 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, |
| 985 | full_command_packet->header.status_block.error, |
| 986 | error_str[0] == '\0' ? |
| 987 | twa_string_lookup(twa_error_table, |
| 988 | full_command_packet->header.status_block.error) : error_str, |
| 989 | full_command_packet->header.err_specific_desc); |
| 990 | } |
| 991 | |
| 992 | if (copy_sense) { |
| 993 | memcpy(tw_dev->srb[request_id]->sense_buffer, full_command_packet->header.sense_data, TW_SENSE_DATA_LENGTH); |
| 994 | tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1); |
| 995 | retval = TW_ISR_DONT_RESULT; |
| 996 | goto out; |
| 997 | } |
| 998 | retval = 0; |
| 999 | out: |
| 1000 | return retval; |
| 1001 | } /* End twa_fill_sense() */ |
| 1002 | |
| 1003 | /* This function will free up device extension resources */ |
| 1004 | static void twa_free_device_extension(TW_Device_Extension *tw_dev) |
| 1005 | { |
| 1006 | if (tw_dev->command_packet_virt[0]) |
| 1007 | pci_free_consistent(tw_dev->tw_pci_dev, |
| 1008 | sizeof(TW_Command_Full)*TW_Q_LENGTH, |
| 1009 | tw_dev->command_packet_virt[0], |
| 1010 | tw_dev->command_packet_phys[0]); |
| 1011 | |
| 1012 | if (tw_dev->generic_buffer_virt[0]) |
| 1013 | pci_free_consistent(tw_dev->tw_pci_dev, |
| 1014 | TW_SECTOR_SIZE*TW_Q_LENGTH, |
| 1015 | tw_dev->generic_buffer_virt[0], |
| 1016 | tw_dev->generic_buffer_phys[0]); |
| 1017 | |
Jesper Juhl | c9475cb | 2005-11-07 01:01:26 -0800 | [diff] [blame] | 1018 | kfree(tw_dev->event_queue[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1019 | } /* End twa_free_device_extension() */ |
| 1020 | |
| 1021 | /* This function will free a request id */ |
| 1022 | static void twa_free_request_id(TW_Device_Extension *tw_dev, int request_id) |
| 1023 | { |
| 1024 | tw_dev->free_queue[tw_dev->free_tail] = request_id; |
| 1025 | tw_dev->state[request_id] = TW_S_FINISHED; |
| 1026 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; |
| 1027 | } /* End twa_free_request_id() */ |
| 1028 | |
Alexey Dobriyan | 7f927fc | 2006-03-28 01:56:53 -0800 | [diff] [blame] | 1029 | /* This function will get parameter table entries from the firmware */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1030 | static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes) |
| 1031 | { |
| 1032 | TW_Command_Full *full_command_packet; |
| 1033 | TW_Command *command_packet; |
| 1034 | TW_Param_Apache *param; |
| 1035 | unsigned long param_value; |
| 1036 | void *retval = NULL; |
| 1037 | |
| 1038 | /* Setup the command packet */ |
| 1039 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 1040 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); |
| 1041 | command_packet = &full_command_packet->command.oldcommand; |
| 1042 | |
| 1043 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
| 1044 | command_packet->size = TW_COMMAND_SIZE; |
| 1045 | command_packet->request_id = request_id; |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1046 | command_packet->byte6_offset.block_count = cpu_to_le16(1); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1047 | |
| 1048 | /* Now setup the param */ |
| 1049 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; |
| 1050 | memset(param, 0, TW_SECTOR_SIZE); |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1051 | param->table_id = cpu_to_le16(table_id | 0x8000); |
| 1052 | param->parameter_id = cpu_to_le16(parameter_id); |
| 1053 | param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1054 | param_value = tw_dev->generic_buffer_phys[request_id]; |
| 1055 | |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1056 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(param_value); |
| 1057 | command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1058 | |
| 1059 | /* Post the command packet to the board */ |
| 1060 | twa_post_command_packet(tw_dev, request_id, 1); |
| 1061 | |
| 1062 | /* Poll for completion */ |
| 1063 | if (twa_poll_response(tw_dev, request_id, 30)) |
| 1064 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "No valid response during get param") |
| 1065 | else |
| 1066 | retval = (void *)&(param->data[0]); |
| 1067 | |
| 1068 | tw_dev->posted_request_count--; |
| 1069 | tw_dev->state[request_id] = TW_S_INITIAL; |
| 1070 | |
| 1071 | return retval; |
| 1072 | } /* End twa_get_param() */ |
| 1073 | |
| 1074 | /* This function will assign an available request id */ |
| 1075 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id) |
| 1076 | { |
| 1077 | *request_id = tw_dev->free_queue[tw_dev->free_head]; |
| 1078 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; |
| 1079 | tw_dev->state[*request_id] = TW_S_STARTED; |
| 1080 | } /* End twa_get_request_id() */ |
| 1081 | |
| 1082 | /* This function will send an initconnection command to controller */ |
| 1083 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, |
| 1084 | u32 set_features, unsigned short current_fw_srl, |
| 1085 | unsigned short current_fw_arch_id, |
| 1086 | unsigned short current_fw_branch, |
| 1087 | unsigned short current_fw_build, |
| 1088 | unsigned short *fw_on_ctlr_srl, |
| 1089 | unsigned short *fw_on_ctlr_arch_id, |
| 1090 | unsigned short *fw_on_ctlr_branch, |
| 1091 | unsigned short *fw_on_ctlr_build, |
| 1092 | u32 *init_connect_result) |
| 1093 | { |
| 1094 | TW_Command_Full *full_command_packet; |
| 1095 | TW_Initconnect *tw_initconnect; |
| 1096 | int request_id = 0, retval = 1; |
| 1097 | |
| 1098 | /* Initialize InitConnection command packet */ |
| 1099 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 1100 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); |
| 1101 | full_command_packet->header.header_desc.size_header = 128; |
| 1102 | |
| 1103 | tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand; |
| 1104 | tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION); |
| 1105 | tw_initconnect->request_id = request_id; |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1106 | tw_initconnect->message_credits = cpu_to_le16(message_credits); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1107 | tw_initconnect->features = set_features; |
| 1108 | |
| 1109 | /* Turn on 64-bit sgl support if we need to */ |
| 1110 | tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0; |
| 1111 | |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1112 | tw_initconnect->features = cpu_to_le32(tw_initconnect->features); |
| 1113 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1114 | if (set_features & TW_EXTENDED_INIT_CONNECT) { |
| 1115 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED; |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1116 | tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl); |
| 1117 | tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id); |
| 1118 | tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch); |
| 1119 | tw_initconnect->fw_build = cpu_to_le16(current_fw_build); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1120 | } else |
| 1121 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE; |
| 1122 | |
| 1123 | /* Send command packet to the board */ |
| 1124 | twa_post_command_packet(tw_dev, request_id, 1); |
| 1125 | |
| 1126 | /* Poll for completion */ |
| 1127 | if (twa_poll_response(tw_dev, request_id, 30)) { |
| 1128 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "No valid response during init connection"); |
| 1129 | } else { |
| 1130 | if (set_features & TW_EXTENDED_INIT_CONNECT) { |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1131 | *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl); |
| 1132 | *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id); |
| 1133 | *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch); |
| 1134 | *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build); |
| 1135 | *init_connect_result = le32_to_cpu(tw_initconnect->result); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1136 | } |
| 1137 | retval = 0; |
| 1138 | } |
| 1139 | |
| 1140 | tw_dev->posted_request_count--; |
| 1141 | tw_dev->state[request_id] = TW_S_INITIAL; |
| 1142 | |
| 1143 | return retval; |
| 1144 | } /* End twa_initconnection() */ |
| 1145 | |
| 1146 | /* This function will initialize the fields of a device extension */ |
| 1147 | static int twa_initialize_device_extension(TW_Device_Extension *tw_dev) |
| 1148 | { |
| 1149 | int i, retval = 1; |
| 1150 | |
| 1151 | /* Initialize command packet buffers */ |
| 1152 | if (twa_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) { |
| 1153 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Command packet memory allocation failed"); |
| 1154 | goto out; |
| 1155 | } |
| 1156 | |
| 1157 | /* Initialize generic buffer */ |
| 1158 | if (twa_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) { |
| 1159 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x17, "Generic memory allocation failed"); |
| 1160 | goto out; |
| 1161 | } |
| 1162 | |
| 1163 | /* Allocate event info space */ |
| 1164 | tw_dev->event_queue[0] = kmalloc(sizeof(TW_Event) * TW_Q_LENGTH, GFP_KERNEL); |
| 1165 | if (!tw_dev->event_queue[0]) { |
| 1166 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed"); |
| 1167 | goto out; |
| 1168 | } |
| 1169 | |
| 1170 | memset(tw_dev->event_queue[0], 0, sizeof(TW_Event) * TW_Q_LENGTH); |
| 1171 | |
| 1172 | for (i = 0; i < TW_Q_LENGTH; i++) { |
| 1173 | tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event))); |
| 1174 | tw_dev->free_queue[i] = i; |
| 1175 | tw_dev->state[i] = TW_S_INITIAL; |
| 1176 | } |
| 1177 | |
| 1178 | tw_dev->pending_head = TW_Q_START; |
| 1179 | tw_dev->pending_tail = TW_Q_START; |
| 1180 | tw_dev->free_head = TW_Q_START; |
| 1181 | tw_dev->free_tail = TW_Q_START; |
| 1182 | tw_dev->error_sequence_id = 1; |
| 1183 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
| 1184 | |
Jes Sorensen | a12e25bd | 2006-01-11 08:39:45 -0500 | [diff] [blame] | 1185 | mutex_init(&tw_dev->ioctl_lock); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1186 | init_waitqueue_head(&tw_dev->ioctl_wqueue); |
| 1187 | |
| 1188 | retval = 0; |
| 1189 | out: |
| 1190 | return retval; |
| 1191 | } /* End twa_initialize_device_extension() */ |
| 1192 | |
| 1193 | /* This function is the interrupt service routine */ |
| 1194 | static irqreturn_t twa_interrupt(int irq, void *dev_instance, struct pt_regs *regs) |
| 1195 | { |
| 1196 | int request_id, error = 0; |
| 1197 | u32 status_reg_value; |
| 1198 | TW_Response_Queue response_que; |
| 1199 | TW_Command_Full *full_command_packet; |
| 1200 | TW_Command *command_packet; |
| 1201 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; |
| 1202 | int handled = 0; |
| 1203 | |
| 1204 | /* Get the per adapter lock */ |
| 1205 | spin_lock(tw_dev->host->host_lock); |
| 1206 | |
| 1207 | /* Read the registers */ |
| 1208 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 1209 | |
| 1210 | /* Check if this is our interrupt, otherwise bail */ |
| 1211 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) |
| 1212 | goto twa_interrupt_bail; |
| 1213 | |
| 1214 | handled = 1; |
| 1215 | |
| 1216 | /* Check controller for errors */ |
| 1217 | if (twa_check_bits(status_reg_value)) { |
| 1218 | if (twa_decode_bits(tw_dev, status_reg_value)) { |
| 1219 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
| 1220 | goto twa_interrupt_bail; |
| 1221 | } |
| 1222 | } |
| 1223 | |
| 1224 | /* Handle host interrupt */ |
| 1225 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) |
| 1226 | TW_CLEAR_HOST_INTERRUPT(tw_dev); |
| 1227 | |
| 1228 | /* Handle attention interrupt */ |
| 1229 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { |
| 1230 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); |
| 1231 | if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) { |
| 1232 | twa_get_request_id(tw_dev, &request_id); |
| 1233 | |
| 1234 | error = twa_aen_read_queue(tw_dev, request_id); |
| 1235 | if (error) { |
| 1236 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 1237 | twa_free_request_id(tw_dev, request_id); |
| 1238 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); |
| 1239 | } |
| 1240 | } |
| 1241 | } |
| 1242 | |
| 1243 | /* Handle command interrupt */ |
| 1244 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { |
| 1245 | TW_MASK_COMMAND_INTERRUPT(tw_dev); |
| 1246 | /* Drain as many pending commands as we can */ |
| 1247 | while (tw_dev->pending_request_count > 0) { |
| 1248 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; |
| 1249 | if (tw_dev->state[request_id] != TW_S_PENDING) { |
| 1250 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x19, "Found request id that wasn't pending"); |
| 1251 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
| 1252 | goto twa_interrupt_bail; |
| 1253 | } |
| 1254 | if (twa_post_command_packet(tw_dev, request_id, 1)==0) { |
| 1255 | tw_dev->pending_head = (tw_dev->pending_head + 1) % TW_Q_LENGTH; |
| 1256 | tw_dev->pending_request_count--; |
| 1257 | } else { |
| 1258 | /* If we get here, we will continue re-posting on the next command interrupt */ |
| 1259 | break; |
| 1260 | } |
| 1261 | } |
| 1262 | } |
| 1263 | |
| 1264 | /* Handle response interrupt */ |
| 1265 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { |
| 1266 | |
| 1267 | /* Drain the response queue from the board */ |
| 1268 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { |
| 1269 | /* Complete the response */ |
| 1270 | response_que.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
| 1271 | request_id = TW_RESID_OUT(response_que.response_id); |
| 1272 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 1273 | error = 0; |
| 1274 | command_packet = &full_command_packet->command.oldcommand; |
| 1275 | /* Check for command packet errors */ |
| 1276 | if (full_command_packet->command.newcommand.status != 0) { |
| 1277 | if (tw_dev->srb[request_id] != 0) { |
| 1278 | error = twa_fill_sense(tw_dev, request_id, 1, 1); |
| 1279 | } else { |
| 1280 | /* Skip ioctl error prints */ |
| 1281 | if (request_id != tw_dev->chrdev_request_id) { |
| 1282 | error = twa_fill_sense(tw_dev, request_id, 0, 1); |
| 1283 | } |
| 1284 | } |
| 1285 | } |
| 1286 | |
| 1287 | /* Check for correct state */ |
| 1288 | if (tw_dev->state[request_id] != TW_S_POSTED) { |
| 1289 | if (tw_dev->srb[request_id] != 0) { |
| 1290 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted"); |
| 1291 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
| 1292 | goto twa_interrupt_bail; |
| 1293 | } |
| 1294 | } |
| 1295 | |
| 1296 | /* Check for internal command completion */ |
| 1297 | if (tw_dev->srb[request_id] == 0) { |
| 1298 | if (request_id != tw_dev->chrdev_request_id) { |
| 1299 | if (twa_aen_complete(tw_dev, request_id)) |
| 1300 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt"); |
| 1301 | } else { |
| 1302 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
| 1303 | wake_up(&tw_dev->ioctl_wqueue); |
| 1304 | } |
| 1305 | } else { |
| 1306 | twa_scsiop_execute_scsi_complete(tw_dev, request_id); |
| 1307 | /* If no error command was a success */ |
| 1308 | if (error == 0) { |
| 1309 | tw_dev->srb[request_id]->result = (DID_OK << 16); |
| 1310 | } |
| 1311 | |
| 1312 | /* If error, command failed */ |
| 1313 | if (error == 1) { |
| 1314 | /* Ask for a host reset */ |
| 1315 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); |
| 1316 | } |
| 1317 | |
| 1318 | /* Report residual bytes for single sgl */ |
| 1319 | if ((tw_dev->srb[request_id]->use_sg <= 1) && (full_command_packet->command.newcommand.status == 0)) { |
| 1320 | if (full_command_packet->command.newcommand.sg_list[0].length < tw_dev->srb[request_id]->request_bufflen) |
| 1321 | tw_dev->srb[request_id]->resid = tw_dev->srb[request_id]->request_bufflen - full_command_packet->command.newcommand.sg_list[0].length; |
| 1322 | } |
| 1323 | |
| 1324 | /* Now complete the io */ |
| 1325 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 1326 | twa_free_request_id(tw_dev, request_id); |
| 1327 | tw_dev->posted_request_count--; |
| 1328 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); |
| 1329 | twa_unmap_scsi_data(tw_dev, request_id); |
| 1330 | } |
| 1331 | |
| 1332 | /* Check for valid status after each drain */ |
| 1333 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 1334 | if (twa_check_bits(status_reg_value)) { |
| 1335 | if (twa_decode_bits(tw_dev, status_reg_value)) { |
| 1336 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
| 1337 | goto twa_interrupt_bail; |
| 1338 | } |
| 1339 | } |
| 1340 | } |
| 1341 | } |
| 1342 | |
| 1343 | twa_interrupt_bail: |
| 1344 | spin_unlock(tw_dev->host->host_lock); |
| 1345 | return IRQ_RETVAL(handled); |
| 1346 | } /* End twa_interrupt() */ |
| 1347 | |
| 1348 | /* This function will load the request id and various sgls for ioctls */ |
| 1349 | static void twa_load_sgl(TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length) |
| 1350 | { |
| 1351 | TW_Command *oldcommand; |
| 1352 | TW_Command_Apache *newcommand; |
| 1353 | TW_SG_Entry *sgl; |
| 1354 | |
| 1355 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { |
| 1356 | newcommand = &full_command_packet->command.newcommand; |
| 1357 | newcommand->request_id__lunl = |
| 1358 | TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id); |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1359 | newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); |
| 1360 | newcommand->sg_list[0].length = cpu_to_le32(length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1361 | newcommand->sgl_entries__lunh = |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1362 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), 1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1363 | } else { |
| 1364 | oldcommand = &full_command_packet->command.oldcommand; |
| 1365 | oldcommand->request_id = request_id; |
| 1366 | |
| 1367 | if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) { |
| 1368 | /* Load the sg list */ |
| 1369 | sgl = (TW_SG_Entry *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset)); |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1370 | sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); |
| 1371 | sgl->length = cpu_to_le32(length); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1372 | |
| 1373 | if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4)) |
| 1374 | oldcommand->size += 1; |
| 1375 | } |
| 1376 | } |
| 1377 | } /* End twa_load_sgl() */ |
| 1378 | |
| 1379 | /* This function will perform a pci-dma mapping for a scatter gather list */ |
| 1380 | static int twa_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id) |
| 1381 | { |
| 1382 | int use_sg; |
| 1383 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; |
| 1384 | struct pci_dev *pdev = tw_dev->tw_pci_dev; |
| 1385 | int retval = 0; |
| 1386 | |
| 1387 | if (cmd->use_sg == 0) |
| 1388 | goto out; |
| 1389 | |
| 1390 | use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, DMA_BIDIRECTIONAL); |
| 1391 | |
| 1392 | if (use_sg == 0) { |
| 1393 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list"); |
| 1394 | goto out; |
| 1395 | } |
| 1396 | |
| 1397 | cmd->SCp.phase = TW_PHASE_SGLIST; |
| 1398 | cmd->SCp.have_data_in = use_sg; |
| 1399 | retval = use_sg; |
| 1400 | out: |
| 1401 | return retval; |
| 1402 | } /* End twa_map_scsi_sg_data() */ |
| 1403 | |
| 1404 | /* This function will perform a pci-dma map for a single buffer */ |
| 1405 | static dma_addr_t twa_map_scsi_single_data(TW_Device_Extension *tw_dev, int request_id) |
| 1406 | { |
| 1407 | dma_addr_t mapping; |
| 1408 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; |
| 1409 | struct pci_dev *pdev = tw_dev->tw_pci_dev; |
adam radford | 62288f1 | 2006-02-05 14:51:43 -0800 | [diff] [blame] | 1410 | dma_addr_t retval = 0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1411 | |
| 1412 | if (cmd->request_bufflen == 0) { |
| 1413 | retval = 0; |
| 1414 | goto out; |
| 1415 | } |
| 1416 | |
| 1417 | mapping = pci_map_single(pdev, cmd->request_buffer, cmd->request_bufflen, DMA_BIDIRECTIONAL); |
| 1418 | |
| 1419 | if (mapping == 0) { |
| 1420 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Failed to map page"); |
| 1421 | goto out; |
| 1422 | } |
| 1423 | |
| 1424 | cmd->SCp.phase = TW_PHASE_SINGLE; |
| 1425 | cmd->SCp.have_data_in = mapping; |
| 1426 | retval = mapping; |
| 1427 | out: |
| 1428 | return retval; |
| 1429 | } /* End twa_map_scsi_single_data() */ |
| 1430 | |
| 1431 | /* This function will poll for a response interrupt of a request */ |
| 1432 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) |
| 1433 | { |
| 1434 | int retval = 1, found = 0, response_request_id; |
| 1435 | TW_Response_Queue response_queue; |
| 1436 | TW_Command_Full *full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 1437 | |
| 1438 | if (twa_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds) == 0) { |
| 1439 | response_queue.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
| 1440 | response_request_id = TW_RESID_OUT(response_queue.response_id); |
| 1441 | if (request_id != response_request_id) { |
| 1442 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "Found unexpected request id while polling for response"); |
| 1443 | goto out; |
| 1444 | } |
| 1445 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { |
| 1446 | if (full_command_packet->command.newcommand.status != 0) { |
| 1447 | /* bad response */ |
| 1448 | twa_fill_sense(tw_dev, request_id, 0, 0); |
| 1449 | goto out; |
| 1450 | } |
| 1451 | found = 1; |
| 1452 | } else { |
| 1453 | if (full_command_packet->command.oldcommand.status != 0) { |
| 1454 | /* bad response */ |
| 1455 | twa_fill_sense(tw_dev, request_id, 0, 0); |
| 1456 | goto out; |
| 1457 | } |
| 1458 | found = 1; |
| 1459 | } |
| 1460 | } |
| 1461 | |
| 1462 | if (found) |
| 1463 | retval = 0; |
| 1464 | out: |
| 1465 | return retval; |
| 1466 | } /* End twa_poll_response() */ |
| 1467 | |
| 1468 | /* This function will poll the status register for a flag */ |
| 1469 | static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) |
| 1470 | { |
| 1471 | u32 status_reg_value; |
| 1472 | unsigned long before; |
| 1473 | int retval = 1; |
| 1474 | |
| 1475 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 1476 | before = jiffies; |
| 1477 | |
| 1478 | if (twa_check_bits(status_reg_value)) |
| 1479 | twa_decode_bits(tw_dev, status_reg_value); |
| 1480 | |
| 1481 | while ((status_reg_value & flag) != flag) { |
| 1482 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 1483 | |
| 1484 | if (twa_check_bits(status_reg_value)) |
| 1485 | twa_decode_bits(tw_dev, status_reg_value); |
| 1486 | |
| 1487 | if (time_after(jiffies, before + HZ * seconds)) |
| 1488 | goto out; |
| 1489 | |
| 1490 | msleep(50); |
| 1491 | } |
| 1492 | retval = 0; |
| 1493 | out: |
| 1494 | return retval; |
| 1495 | } /* End twa_poll_status() */ |
| 1496 | |
| 1497 | /* This function will poll the status register for disappearance of a flag */ |
| 1498 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) |
| 1499 | { |
| 1500 | u32 status_reg_value; |
| 1501 | unsigned long before; |
| 1502 | int retval = 1; |
| 1503 | |
| 1504 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 1505 | before = jiffies; |
| 1506 | |
| 1507 | if (twa_check_bits(status_reg_value)) |
| 1508 | twa_decode_bits(tw_dev, status_reg_value); |
| 1509 | |
| 1510 | while ((status_reg_value & flag) != 0) { |
| 1511 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 1512 | if (twa_check_bits(status_reg_value)) |
| 1513 | twa_decode_bits(tw_dev, status_reg_value); |
| 1514 | |
| 1515 | if (time_after(jiffies, before + HZ * seconds)) |
| 1516 | goto out; |
| 1517 | |
| 1518 | msleep(50); |
| 1519 | } |
| 1520 | retval = 0; |
| 1521 | out: |
| 1522 | return retval; |
| 1523 | } /* End twa_poll_status_gone() */ |
| 1524 | |
| 1525 | /* This function will attempt to post a command packet to the board */ |
| 1526 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal) |
| 1527 | { |
| 1528 | u32 status_reg_value; |
| 1529 | dma_addr_t command_que_value; |
| 1530 | int retval = 1; |
| 1531 | |
| 1532 | command_que_value = tw_dev->command_packet_phys[request_id]; |
| 1533 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
| 1534 | |
| 1535 | if (twa_check_bits(status_reg_value)) |
| 1536 | twa_decode_bits(tw_dev, status_reg_value); |
| 1537 | |
| 1538 | if (((tw_dev->pending_request_count > 0) && (tw_dev->state[request_id] != TW_S_PENDING)) || (status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL)) { |
| 1539 | |
| 1540 | /* Only pend internal driver commands */ |
| 1541 | if (!internal) { |
| 1542 | retval = SCSI_MLQUEUE_HOST_BUSY; |
| 1543 | goto out; |
| 1544 | } |
| 1545 | |
| 1546 | /* Couldn't post the command packet, so we do it later */ |
| 1547 | if (tw_dev->state[request_id] != TW_S_PENDING) { |
| 1548 | tw_dev->state[request_id] = TW_S_PENDING; |
| 1549 | tw_dev->pending_request_count++; |
| 1550 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { |
| 1551 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; |
| 1552 | } |
| 1553 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; |
| 1554 | tw_dev->pending_tail = (tw_dev->pending_tail + 1) % TW_Q_LENGTH; |
| 1555 | } |
| 1556 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); |
| 1557 | goto out; |
| 1558 | } else { |
| 1559 | /* We successfully posted the command packet */ |
| 1560 | if (sizeof(dma_addr_t) > 4) { |
| 1561 | command_que_value += TW_COMMAND_OFFSET; |
| 1562 | writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
| 1563 | writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR(tw_dev) + 0x4); |
| 1564 | } else { |
| 1565 | writel(TW_COMMAND_OFFSET + command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
| 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; |
| 1574 | out: |
| 1575 | return retval; |
| 1576 | } /* End twa_post_command_packet() */ |
| 1577 | |
| 1578 | /* This function will reset a device extension */ |
| 1579 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset) |
| 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 | tw_dev->srb[i]->result = (DID_RESET << 16); |
| 1597 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); |
| 1598 | twa_unmap_scsi_data(tw_dev, i); |
| 1599 | } |
| 1600 | } |
| 1601 | } |
| 1602 | |
| 1603 | /* Reset queues and counts */ |
| 1604 | for (i = 0; i < TW_Q_LENGTH; i++) { |
| 1605 | tw_dev->free_queue[i] = i; |
| 1606 | tw_dev->state[i] = TW_S_INITIAL; |
| 1607 | } |
| 1608 | tw_dev->free_head = TW_Q_START; |
| 1609 | tw_dev->free_tail = TW_Q_START; |
| 1610 | tw_dev->posted_request_count = 0; |
| 1611 | tw_dev->pending_request_count = 0; |
| 1612 | tw_dev->pending_head = TW_Q_START; |
| 1613 | tw_dev->pending_tail = TW_Q_START; |
| 1614 | tw_dev->reset_print = 0; |
| 1615 | |
| 1616 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); |
| 1617 | |
| 1618 | if (twa_reset_sequence(tw_dev, 1)) |
| 1619 | goto out; |
| 1620 | |
| 1621 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
| 1622 | |
| 1623 | /* Wake up any ioctl that was pending before the reset */ |
| 1624 | if ((tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE) || (ioctl_reset)) { |
| 1625 | clear_bit(TW_IN_RESET, &tw_dev->flags); |
| 1626 | } else { |
| 1627 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
| 1628 | wake_up(&tw_dev->ioctl_wqueue); |
| 1629 | } |
| 1630 | retval = 0; |
| 1631 | out: |
| 1632 | return retval; |
| 1633 | } /* End twa_reset_device_extension() */ |
| 1634 | |
| 1635 | /* This function will reset a controller */ |
| 1636 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset) |
| 1637 | { |
| 1638 | int tries = 0, retval = 1, flashed = 0, do_soft_reset = soft_reset; |
| 1639 | |
| 1640 | while (tries < TW_MAX_RESET_TRIES) { |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 1641 | if (do_soft_reset) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1642 | TW_SOFT_RESET(tw_dev); |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 1643 | /* Clear pchip/response queue on 9550SX */ |
| 1644 | if (twa_empty_response_queue_large(tw_dev)) { |
| 1645 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x36, "Response queue (large) empty failed during reset sequence"); |
| 1646 | do_soft_reset = 1; |
| 1647 | tries++; |
| 1648 | continue; |
| 1649 | } |
| 1650 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1651 | |
| 1652 | /* Make sure controller is in a good state */ |
| 1653 | if (twa_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY | (do_soft_reset == 1 ? TW_STATUS_ATTENTION_INTERRUPT : 0), 60)) { |
| 1654 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Microcontroller not ready during reset sequence"); |
| 1655 | do_soft_reset = 1; |
| 1656 | tries++; |
| 1657 | continue; |
| 1658 | } |
| 1659 | |
| 1660 | /* Empty response queue */ |
| 1661 | if (twa_empty_response_queue(tw_dev)) { |
| 1662 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Response queue empty failed during reset sequence"); |
| 1663 | do_soft_reset = 1; |
| 1664 | tries++; |
| 1665 | continue; |
| 1666 | } |
| 1667 | |
| 1668 | flashed = 0; |
| 1669 | |
| 1670 | /* Check for compatibility/flash */ |
| 1671 | if (twa_check_srl(tw_dev, &flashed)) { |
| 1672 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Compatibility check failed during reset sequence"); |
| 1673 | do_soft_reset = 1; |
| 1674 | tries++; |
| 1675 | continue; |
| 1676 | } else { |
| 1677 | if (flashed) { |
| 1678 | tries++; |
| 1679 | continue; |
| 1680 | } |
| 1681 | } |
| 1682 | |
| 1683 | /* Drain the AEN queue */ |
| 1684 | if (twa_aen_drain_queue(tw_dev, soft_reset)) { |
| 1685 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x22, "AEN drain failed during reset sequence"); |
| 1686 | do_soft_reset = 1; |
| 1687 | tries++; |
| 1688 | continue; |
| 1689 | } |
| 1690 | |
| 1691 | /* If we got here, controller is in a good state */ |
| 1692 | retval = 0; |
| 1693 | goto out; |
| 1694 | } |
| 1695 | out: |
| 1696 | return retval; |
| 1697 | } /* End twa_reset_sequence() */ |
| 1698 | |
| 1699 | /* This funciton returns unit geometry in cylinders/heads/sectors */ |
| 1700 | static int twa_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) |
| 1701 | { |
| 1702 | int heads, sectors, cylinders; |
| 1703 | TW_Device_Extension *tw_dev; |
| 1704 | |
| 1705 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; |
| 1706 | |
| 1707 | if (capacity >= 0x200000) { |
| 1708 | heads = 255; |
| 1709 | sectors = 63; |
| 1710 | cylinders = sector_div(capacity, heads * sectors); |
| 1711 | } else { |
| 1712 | heads = 64; |
| 1713 | sectors = 32; |
| 1714 | cylinders = sector_div(capacity, heads * sectors); |
| 1715 | } |
| 1716 | |
| 1717 | geom[0] = heads; |
| 1718 | geom[1] = sectors; |
| 1719 | geom[2] = cylinders; |
| 1720 | |
| 1721 | return 0; |
| 1722 | } /* End twa_scsi_biosparam() */ |
| 1723 | |
| 1724 | /* This is the new scsi eh reset function */ |
| 1725 | static int twa_scsi_eh_reset(struct scsi_cmnd *SCpnt) |
| 1726 | { |
| 1727 | TW_Device_Extension *tw_dev = NULL; |
| 1728 | int retval = FAILED; |
| 1729 | |
| 1730 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; |
| 1731 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1732 | tw_dev->num_resets++; |
| 1733 | |
Jeff Garzik | 017560f | 2005-10-24 18:04:36 -0400 | [diff] [blame] | 1734 | sdev_printk(KERN_WARNING, SCpnt->device, |
| 1735 | "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n", |
| 1736 | TW_DRIVER, 0x2c, SCpnt->cmnd[0]); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1737 | |
| 1738 | /* Now reset the card and some of the device extension data */ |
| 1739 | if (twa_reset_device_extension(tw_dev, 0)) { |
| 1740 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2b, "Controller reset failed during scsi host reset"); |
| 1741 | goto out; |
| 1742 | } |
| 1743 | |
| 1744 | retval = SUCCESS; |
| 1745 | out: |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1746 | return retval; |
| 1747 | } /* End twa_scsi_eh_reset() */ |
| 1748 | |
| 1749 | /* This is the main scsi queue function to handle scsi opcodes */ |
| 1750 | static int twa_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) |
| 1751 | { |
| 1752 | int request_id, retval; |
| 1753 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; |
| 1754 | |
| 1755 | /* Check if this FW supports luns */ |
| 1756 | if ((SCpnt->device->lun != 0) && (tw_dev->working_srl < TW_FW_SRL_LUNS_SUPPORTED)) { |
| 1757 | SCpnt->result = (DID_BAD_TARGET << 16); |
| 1758 | done(SCpnt); |
| 1759 | retval = 0; |
| 1760 | goto out; |
| 1761 | } |
| 1762 | |
| 1763 | /* Save done function into scsi_cmnd struct */ |
| 1764 | SCpnt->scsi_done = done; |
| 1765 | |
| 1766 | /* Get a free request id */ |
| 1767 | twa_get_request_id(tw_dev, &request_id); |
| 1768 | |
| 1769 | /* Save the scsi command for use by the ISR */ |
| 1770 | tw_dev->srb[request_id] = SCpnt; |
| 1771 | |
| 1772 | /* Initialize phase to zero */ |
| 1773 | SCpnt->SCp.phase = TW_PHASE_INITIAL; |
| 1774 | |
| 1775 | retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); |
| 1776 | switch (retval) { |
| 1777 | case SCSI_MLQUEUE_HOST_BUSY: |
| 1778 | twa_free_request_id(tw_dev, request_id); |
| 1779 | break; |
| 1780 | case 1: |
| 1781 | tw_dev->state[request_id] = TW_S_COMPLETED; |
| 1782 | twa_free_request_id(tw_dev, request_id); |
| 1783 | SCpnt->result = (DID_ERROR << 16); |
| 1784 | done(SCpnt); |
| 1785 | retval = 0; |
| 1786 | } |
| 1787 | out: |
| 1788 | return retval; |
| 1789 | } /* End twa_scsi_queue() */ |
| 1790 | |
| 1791 | /* This function hands scsi cdb's to the firmware */ |
| 1792 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg) |
| 1793 | { |
| 1794 | TW_Command_Full *full_command_packet; |
| 1795 | TW_Command_Apache *command_packet; |
| 1796 | u32 num_sectors = 0x0; |
| 1797 | int i, sg_count; |
| 1798 | struct scsi_cmnd *srb = NULL; |
| 1799 | struct scatterlist *sglist = NULL; |
adam radford | 62288f1 | 2006-02-05 14:51:43 -0800 | [diff] [blame] | 1800 | dma_addr_t buffaddr = 0x0; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1801 | int retval = 1; |
| 1802 | |
| 1803 | if (tw_dev->srb[request_id]) { |
| 1804 | if (tw_dev->srb[request_id]->request_buffer) { |
| 1805 | sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; |
| 1806 | } |
| 1807 | srb = tw_dev->srb[request_id]; |
| 1808 | } |
| 1809 | |
| 1810 | /* Initialize command packet */ |
| 1811 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
| 1812 | full_command_packet->header.header_desc.size_header = 128; |
| 1813 | full_command_packet->header.status_block.error = 0; |
| 1814 | full_command_packet->header.status_block.severity__reserved = 0; |
| 1815 | |
| 1816 | command_packet = &full_command_packet->command.newcommand; |
| 1817 | command_packet->status = 0; |
| 1818 | command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI); |
| 1819 | |
| 1820 | /* We forced 16 byte cdb use earlier */ |
| 1821 | if (!cdb) |
| 1822 | memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN); |
| 1823 | else |
| 1824 | memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN); |
| 1825 | |
| 1826 | if (srb) { |
| 1827 | command_packet->unit = srb->device->id; |
| 1828 | command_packet->request_id__lunl = |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1829 | cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1830 | } else { |
| 1831 | command_packet->request_id__lunl = |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1832 | cpu_to_le16(TW_REQ_LUN_IN(0, request_id)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1833 | command_packet->unit = 0; |
| 1834 | } |
| 1835 | |
| 1836 | command_packet->sgl_offset = 16; |
| 1837 | |
| 1838 | if (!sglistarg) { |
| 1839 | /* Map sglist from scsi layer to cmd packet */ |
| 1840 | if (tw_dev->srb[request_id]->use_sg == 0) { |
| 1841 | if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH) { |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1842 | command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
| 1843 | command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH); |
adam radford | d327d08 | 2005-09-09 15:55:13 -0700 | [diff] [blame] | 1844 | if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL) |
| 1845 | memcpy(tw_dev->generic_buffer_virt[request_id], tw_dev->srb[request_id]->request_buffer, tw_dev->srb[request_id]->request_bufflen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1846 | } else { |
| 1847 | buffaddr = twa_map_scsi_single_data(tw_dev, request_id); |
| 1848 | if (buffaddr == 0) |
| 1849 | goto out; |
| 1850 | |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1851 | command_packet->sg_list[0].address = TW_CPU_TO_SGL(buffaddr); |
| 1852 | command_packet->sg_list[0].length = cpu_to_le32(tw_dev->srb[request_id]->request_bufflen); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1853 | } |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1854 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), 1)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1855 | |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1856 | if (command_packet->sg_list[0].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1857 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2d, "Found unaligned address during execute scsi"); |
| 1858 | goto out; |
| 1859 | } |
| 1860 | } |
| 1861 | |
| 1862 | if (tw_dev->srb[request_id]->use_sg > 0) { |
| 1863 | if ((tw_dev->srb[request_id]->use_sg == 1) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) { |
adam radford | d327d08 | 2005-09-09 15:55:13 -0700 | [diff] [blame] | 1864 | if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL) { |
| 1865 | struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; |
| 1866 | char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; |
| 1867 | memcpy(tw_dev->generic_buffer_virt[request_id], buf, sg->length); |
| 1868 | kunmap_atomic(buf - sg->offset, KM_IRQ0); |
| 1869 | } |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1870 | command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
| 1871 | command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1872 | } else { |
| 1873 | sg_count = twa_map_scsi_sg_data(tw_dev, request_id); |
| 1874 | if (sg_count == 0) |
| 1875 | goto out; |
| 1876 | |
| 1877 | for (i = 0; i < sg_count; i++) { |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1878 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(&sglist[i])); |
| 1879 | command_packet->sg_list[i].length = cpu_to_le32(sg_dma_len(&sglist[i])); |
| 1880 | if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1881 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi"); |
| 1882 | goto out; |
| 1883 | } |
| 1884 | } |
| 1885 | } |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1886 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), tw_dev->srb[request_id]->use_sg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1887 | } |
| 1888 | } else { |
| 1889 | /* Internal cdb post */ |
| 1890 | for (i = 0; i < use_sg; i++) { |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1891 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address); |
| 1892 | command_packet->sg_list[i].length = cpu_to_le32(sglistarg[i].length); |
| 1893 | if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1894 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2f, "Found unaligned sgl address during internal post"); |
| 1895 | goto out; |
| 1896 | } |
| 1897 | } |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 1898 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1899 | } |
| 1900 | |
| 1901 | if (srb) { |
| 1902 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) |
| 1903 | num_sectors = (u32)srb->cmnd[4]; |
| 1904 | |
| 1905 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) |
| 1906 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); |
| 1907 | } |
| 1908 | |
| 1909 | /* Update sector statistic */ |
| 1910 | tw_dev->sector_count = num_sectors; |
| 1911 | if (tw_dev->sector_count > tw_dev->max_sector_count) |
| 1912 | tw_dev->max_sector_count = tw_dev->sector_count; |
| 1913 | |
| 1914 | /* Update SG statistics */ |
| 1915 | if (srb) { |
| 1916 | tw_dev->sgl_entries = tw_dev->srb[request_id]->use_sg; |
| 1917 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) |
| 1918 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; |
| 1919 | } |
| 1920 | |
| 1921 | /* Now post the command to the board */ |
| 1922 | if (srb) { |
| 1923 | retval = twa_post_command_packet(tw_dev, request_id, 0); |
| 1924 | } else { |
| 1925 | twa_post_command_packet(tw_dev, request_id, 1); |
| 1926 | retval = 0; |
| 1927 | } |
| 1928 | out: |
| 1929 | return retval; |
| 1930 | } /* End twa_scsiop_execute_scsi() */ |
| 1931 | |
| 1932 | /* This function completes an execute scsi operation */ |
| 1933 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id) |
| 1934 | { |
adam radford | d327d08 | 2005-09-09 15:55:13 -0700 | [diff] [blame] | 1935 | if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH && |
| 1936 | (tw_dev->srb[request_id]->sc_data_direction == DMA_FROM_DEVICE || |
| 1937 | tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL)) { |
| 1938 | if (tw_dev->srb[request_id]->use_sg == 0) { |
| 1939 | memcpy(tw_dev->srb[request_id]->request_buffer, |
| 1940 | tw_dev->generic_buffer_virt[request_id], |
| 1941 | tw_dev->srb[request_id]->request_bufflen); |
| 1942 | } |
| 1943 | if (tw_dev->srb[request_id]->use_sg == 1) { |
| 1944 | struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; |
| 1945 | char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; |
| 1946 | memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length); |
| 1947 | kunmap_atomic(buf - sg->offset, KM_IRQ0); |
| 1948 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1949 | } |
| 1950 | } /* End twa_scsiop_execute_scsi_complete() */ |
| 1951 | |
| 1952 | /* This function tells the controller to shut down */ |
| 1953 | static void __twa_shutdown(TW_Device_Extension *tw_dev) |
| 1954 | { |
| 1955 | /* Disable interrupts */ |
| 1956 | TW_DISABLE_INTERRUPTS(tw_dev); |
| 1957 | |
| 1958 | printk(KERN_WARNING "3w-9xxx: Shutting down host %d.\n", tw_dev->host->host_no); |
| 1959 | |
| 1960 | /* Tell the card we are shutting down */ |
| 1961 | if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { |
| 1962 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x31, "Connection shutdown failed"); |
| 1963 | } else { |
| 1964 | printk(KERN_WARNING "3w-9xxx: Shutdown complete.\n"); |
| 1965 | } |
| 1966 | |
| 1967 | /* Clear all interrupts just before exit */ |
| 1968 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
| 1969 | } /* End __twa_shutdown() */ |
| 1970 | |
| 1971 | /* Wrapper for __twa_shutdown */ |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 1972 | static void twa_shutdown(struct pci_dev *pdev) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1973 | { |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 1974 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1975 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
| 1976 | |
| 1977 | __twa_shutdown(tw_dev); |
| 1978 | } /* End twa_shutdown() */ |
| 1979 | |
| 1980 | /* This function will look up a string */ |
| 1981 | static char *twa_string_lookup(twa_message_type *table, unsigned int code) |
| 1982 | { |
| 1983 | int index; |
| 1984 | |
| 1985 | for (index = 0; ((code != table[index].code) && |
| 1986 | (table[index].text != (char *)0)); index++); |
| 1987 | return(table[index].text); |
| 1988 | } /* End twa_string_lookup() */ |
| 1989 | |
| 1990 | /* This function will perform a pci-dma unmap */ |
| 1991 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) |
| 1992 | { |
| 1993 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; |
| 1994 | struct pci_dev *pdev = tw_dev->tw_pci_dev; |
| 1995 | |
| 1996 | switch(cmd->SCp.phase) { |
| 1997 | case TW_PHASE_SINGLE: |
| 1998 | pci_unmap_single(pdev, cmd->SCp.have_data_in, cmd->request_bufflen, DMA_BIDIRECTIONAL); |
| 1999 | break; |
| 2000 | case TW_PHASE_SGLIST: |
| 2001 | pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL); |
| 2002 | break; |
| 2003 | } |
| 2004 | } /* End twa_unmap_scsi_data() */ |
| 2005 | |
| 2006 | /* scsi_host_template initializer */ |
| 2007 | static struct scsi_host_template driver_template = { |
| 2008 | .module = THIS_MODULE, |
| 2009 | .name = "3ware 9000 Storage Controller", |
| 2010 | .queuecommand = twa_scsi_queue, |
| 2011 | .eh_host_reset_handler = twa_scsi_eh_reset, |
| 2012 | .bios_param = twa_scsi_biosparam, |
| 2013 | .change_queue_depth = twa_change_queue_depth, |
| 2014 | .can_queue = TW_Q_LENGTH-2, |
| 2015 | .this_id = -1, |
| 2016 | .sg_tablesize = TW_APACHE_MAX_SGL_LENGTH, |
| 2017 | .max_sectors = TW_MAX_SECTORS, |
| 2018 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, |
| 2019 | .use_clustering = ENABLE_CLUSTERING, |
| 2020 | .shost_attrs = twa_host_attrs, |
| 2021 | .emulated = 1 |
| 2022 | }; |
| 2023 | |
| 2024 | /* This function will probe and initialize a card */ |
| 2025 | static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) |
| 2026 | { |
| 2027 | struct Scsi_Host *host = NULL; |
| 2028 | TW_Device_Extension *tw_dev; |
| 2029 | u32 mem_addr; |
| 2030 | int retval = -ENODEV; |
| 2031 | |
| 2032 | retval = pci_enable_device(pdev); |
| 2033 | if (retval) { |
| 2034 | TW_PRINTK(host, TW_DRIVER, 0x34, "Failed to enable pci device"); |
| 2035 | goto out_disable_device; |
| 2036 | } |
| 2037 | |
| 2038 | pci_set_master(pdev); |
| 2039 | |
| 2040 | retval = pci_set_dma_mask(pdev, sizeof(dma_addr_t) > 4 ? DMA_64BIT_MASK : DMA_32BIT_MASK); |
| 2041 | if (retval) { |
| 2042 | TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask"); |
| 2043 | goto out_disable_device; |
| 2044 | } |
| 2045 | |
| 2046 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); |
| 2047 | if (!host) { |
| 2048 | TW_PRINTK(host, TW_DRIVER, 0x24, "Failed to allocate memory for device extension"); |
| 2049 | retval = -ENOMEM; |
| 2050 | goto out_disable_device; |
| 2051 | } |
| 2052 | tw_dev = (TW_Device_Extension *)host->hostdata; |
| 2053 | |
| 2054 | memset(tw_dev, 0, sizeof(TW_Device_Extension)); |
| 2055 | |
| 2056 | /* Save values to device extension */ |
| 2057 | tw_dev->host = host; |
| 2058 | tw_dev->tw_pci_dev = pdev; |
| 2059 | |
| 2060 | if (twa_initialize_device_extension(tw_dev)) { |
| 2061 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension"); |
| 2062 | goto out_free_device_extension; |
| 2063 | } |
| 2064 | |
| 2065 | /* Request IO regions */ |
| 2066 | retval = pci_request_regions(pdev, "3w-9xxx"); |
| 2067 | if (retval) { |
| 2068 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Failed to get mem region"); |
| 2069 | goto out_free_device_extension; |
| 2070 | } |
| 2071 | |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 2072 | if (pdev->device == PCI_DEVICE_ID_3WARE_9000) |
| 2073 | mem_addr = pci_resource_start(pdev, 1); |
| 2074 | else |
| 2075 | mem_addr = pci_resource_start(pdev, 2); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2076 | |
| 2077 | /* Save base address */ |
| 2078 | tw_dev->base_addr = ioremap(mem_addr, PAGE_SIZE); |
| 2079 | if (!tw_dev->base_addr) { |
| 2080 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap"); |
| 2081 | goto out_release_mem_region; |
| 2082 | } |
| 2083 | |
| 2084 | /* Disable interrupts on the card */ |
| 2085 | TW_DISABLE_INTERRUPTS(tw_dev); |
| 2086 | |
| 2087 | /* Initialize the card */ |
| 2088 | if (twa_reset_sequence(tw_dev, 0)) |
| 2089 | goto out_release_mem_region; |
| 2090 | |
| 2091 | /* Set host specific parameters */ |
| 2092 | host->max_id = TW_MAX_UNITS; |
| 2093 | host->max_cmd_len = TW_MAX_CDB_LEN; |
| 2094 | |
| 2095 | /* Channels aren't supported by adapter */ |
| 2096 | host->max_lun = TW_MAX_LUNS(tw_dev->working_srl); |
| 2097 | host->max_channel = 0; |
| 2098 | |
| 2099 | /* Register the card with the kernel SCSI layer */ |
| 2100 | retval = scsi_add_host(host, &pdev->dev); |
| 2101 | if (retval) { |
| 2102 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x27, "scsi add host failed"); |
| 2103 | goto out_release_mem_region; |
| 2104 | } |
| 2105 | |
| 2106 | pci_set_drvdata(pdev, host); |
| 2107 | |
| 2108 | printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%x, IRQ: %d.\n", |
| 2109 | host->host_no, mem_addr, pdev->irq); |
| 2110 | printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n", |
| 2111 | host->host_no, |
| 2112 | (char *)twa_get_param(tw_dev, 0, TW_VERSION_TABLE, |
| 2113 | TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH), |
| 2114 | (char *)twa_get_param(tw_dev, 1, TW_VERSION_TABLE, |
| 2115 | TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH), |
adam radford | 75913d9 | 2006-03-15 12:43:19 -0800 | [diff] [blame] | 2116 | le32_to_cpu(*(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE, |
| 2117 | TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH))); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2118 | |
| 2119 | /* Now setup the interrupt handler */ |
| 2120 | retval = request_irq(pdev->irq, twa_interrupt, SA_SHIRQ, "3w-9xxx", tw_dev); |
| 2121 | if (retval) { |
| 2122 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x30, "Error requesting IRQ"); |
| 2123 | goto out_remove_host; |
| 2124 | } |
| 2125 | |
| 2126 | twa_device_extension_list[twa_device_extension_count] = tw_dev; |
| 2127 | twa_device_extension_count++; |
| 2128 | |
| 2129 | /* Re-enable interrupts on the card */ |
| 2130 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
| 2131 | |
| 2132 | /* Finally, scan the host */ |
| 2133 | scsi_scan_host(host); |
| 2134 | |
| 2135 | if (twa_major == -1) { |
| 2136 | if ((twa_major = register_chrdev (0, "twa", &twa_fops)) < 0) |
| 2137 | TW_PRINTK(host, TW_DRIVER, 0x29, "Failed to register character device"); |
| 2138 | } |
| 2139 | return 0; |
| 2140 | |
| 2141 | out_remove_host: |
| 2142 | scsi_remove_host(host); |
| 2143 | out_release_mem_region: |
| 2144 | pci_release_regions(pdev); |
| 2145 | out_free_device_extension: |
| 2146 | twa_free_device_extension(tw_dev); |
| 2147 | scsi_host_put(host); |
| 2148 | out_disable_device: |
| 2149 | pci_disable_device(pdev); |
| 2150 | |
| 2151 | return retval; |
| 2152 | } /* End twa_probe() */ |
| 2153 | |
| 2154 | /* This function is called to remove a device */ |
| 2155 | static void twa_remove(struct pci_dev *pdev) |
| 2156 | { |
| 2157 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
| 2158 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
| 2159 | |
| 2160 | scsi_remove_host(tw_dev->host); |
| 2161 | |
| 2162 | /* Unregister character device */ |
| 2163 | if (twa_major >= 0) { |
| 2164 | unregister_chrdev(twa_major, "twa"); |
| 2165 | twa_major = -1; |
| 2166 | } |
| 2167 | |
| 2168 | /* Free up the IRQ */ |
| 2169 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); |
| 2170 | |
| 2171 | /* Shutdown the card */ |
| 2172 | __twa_shutdown(tw_dev); |
| 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 | /* PCI Devices supported by this driver */ |
| 2186 | static struct pci_device_id twa_pci_tbl[] __devinitdata = { |
| 2187 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000, |
| 2188 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
adam radford | 49bfd8d | 2005-09-21 17:20:14 -0700 | [diff] [blame] | 2189 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9550SX, |
| 2190 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2191 | { } |
| 2192 | }; |
| 2193 | MODULE_DEVICE_TABLE(pci, twa_pci_tbl); |
| 2194 | |
| 2195 | /* pci_driver initializer */ |
| 2196 | static struct pci_driver twa_driver = { |
| 2197 | .name = "3w-9xxx", |
| 2198 | .id_table = twa_pci_tbl, |
| 2199 | .probe = twa_probe, |
| 2200 | .remove = twa_remove, |
Greg Kroah-Hartman | d18c3db | 2005-06-23 17:35:56 -0700 | [diff] [blame] | 2201 | .shutdown = twa_shutdown |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 2202 | }; |
| 2203 | |
| 2204 | /* This function is called on driver initialization */ |
| 2205 | static int __init twa_init(void) |
| 2206 | { |
| 2207 | printk(KERN_WARNING "3ware 9000 Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); |
| 2208 | |
| 2209 | return pci_module_init(&twa_driver); |
| 2210 | } /* End twa_init() */ |
| 2211 | |
| 2212 | /* This function is called on driver exit */ |
| 2213 | static void __exit twa_exit(void) |
| 2214 | { |
| 2215 | pci_unregister_driver(&twa_driver); |
| 2216 | } /* End twa_exit() */ |
| 2217 | |
| 2218 | module_init(twa_init); |
| 2219 | module_exit(twa_exit); |
| 2220 | |