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md: Fix unfortunate interaction with evms
[linux-2.6/mini2440.git] / drivers / scsi / 3w-9xxx.c
blob36c21b19e5d779c86a4ddf8138fda41a696bdd9f
1 /*
2 3w-9xxx.c -- 3ware 9000 Storage Controller device driver for Linux.
3
4 Written By: Adam Radford <linuxraid@amcc.com>
5 Modifications By: Tom Couch <linuxraid@amcc.com>
6
7 Copyright (C) 2004-2009 Applied Micro Circuits Corporation.
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.
63 2.26.02.003 - Correctly handle single sgl's with use_sg=1.
64 2.26.02.004 - Add support for 9550SX controllers.
65 2.26.02.005 - Fix use_sg == 0 mapping on systems with 4GB or higher.
66 2.26.02.006 - Fix 9550SX pchip reset timeout.
67 Add big endian support.
68 2.26.02.007 - Disable local interrupts during kmap/unmap_atomic().
69 2.26.02.008 - Free irq handler in __twa_shutdown().
70 Serialize reset code.
71 Add support for 9650SE controllers.
72 2.26.02.009 - Fix dma mask setting to fallback to 32-bit if 64-bit fails.
73 2.26.02.010 - Add support for 9690SA controllers.
74 2.26.02.011 - Increase max AENs drained to 256.
75 Add MSI support and "use_msi" module parameter.
76 Fix bug in twa_get_param() on 4GB+.
77 Use pci_resource_len() for ioremap().
78 2.26.02.012 - Add power management support.
79 */
80
81 #include <linux/module.h>
82 #include <linux/reboot.h>
83 #include <linux/spinlock.h>
84 #include <linux/interrupt.h>
85 #include <linux/moduleparam.h>
86 #include <linux/errno.h>
87 #include <linux/types.h>
88 #include <linux/delay.h>
89 #include <linux/pci.h>
90 #include <linux/time.h>
91 #include <linux/mutex.h>
92 #include <linux/smp_lock.h>
93 #include <asm/io.h>
94 #include <asm/irq.h>
95 #include <asm/uaccess.h>
96 #include <scsi/scsi.h>
97 #include <scsi/scsi_host.h>
98 #include <scsi/scsi_tcq.h>
99 #include <scsi/scsi_cmnd.h>
100 #include "3w-9xxx.h"
101
102 /* Globals */
103 #define TW_DRIVER_VERSION "2.26.02.012"
104 static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT];
105 static unsigned int twa_device_extension_count;
106 static int twa_major = -1;
107 extern struct timezone sys_tz;
108
109 /* Module parameters */
110 MODULE_AUTHOR ("AMCC");
111 MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver");
112 MODULE_LICENSE("GPL");
113 MODULE_VERSION(TW_DRIVER_VERSION);
114
115 static int use_msi = 0;
116 module_param(use_msi, int, S_IRUGO);
117 MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0");
118
119 /* Function prototypes */
120 static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header);
121 static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id);
122 static char *twa_aen_severity_lookup(unsigned char severity_code);
123 static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id);
124 static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg);
125 static int twa_chrdev_open(struct inode *inode, struct file *file);
126 static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host);
127 static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id);
128 static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id);
129 static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits,
130 u32 set_features, unsigned short current_fw_srl,
131 unsigned short current_fw_arch_id,
132 unsigned short current_fw_branch,
133 unsigned short current_fw_build,
134 unsigned short *fw_on_ctlr_srl,
135 unsigned short *fw_on_ctlr_arch_id,
136 unsigned short *fw_on_ctlr_branch,
137 unsigned short *fw_on_ctlr_build,
138 u32 *init_connect_result);
139 static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length);
140 static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds);
141 static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds);
142 static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal);
143 static int twa_reset_device_extension(TW_Device_Extension *tw_dev);
144 static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset);
145 static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg);
146 static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id);
147 static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code);
148 static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id);
149
150 /* Functions */
151
152 /* Show some statistics about the card */
153 static ssize_t twa_show_stats(struct device *dev,
154 struct device_attribute *attr, char *buf)
155 {
156 struct Scsi_Host *host = class_to_shost(dev);
157 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
158 unsigned long flags = 0;
159 ssize_t len;
160
161 spin_lock_irqsave(tw_dev->host->host_lock, flags);
162 len = snprintf(buf, PAGE_SIZE, "3w-9xxx Driver version: %s\n"
163 "Current commands posted: %4d\n"
164 "Max commands posted: %4d\n"
165 "Current pending commands: %4d\n"
166 "Max pending commands: %4d\n"
167 "Last sgl length: %4d\n"
168 "Max sgl length: %4d\n"
169 "Last sector count: %4d\n"
170 "Max sector count: %4d\n"
171 "SCSI Host Resets: %4d\n"
172 "AEN's: %4d\n",
173 TW_DRIVER_VERSION,
174 tw_dev->posted_request_count,
175 tw_dev->max_posted_request_count,
176 tw_dev->pending_request_count,
177 tw_dev->max_pending_request_count,
178 tw_dev->sgl_entries,
179 tw_dev->max_sgl_entries,
180 tw_dev->sector_count,
181 tw_dev->max_sector_count,
182 tw_dev->num_resets,
183 tw_dev->aen_count);
184 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
185 return len;
186 } /* End twa_show_stats() */
187
188 /* This function will set a devices queue depth */
189 static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth)
190 {
191 if (queue_depth > TW_Q_LENGTH-2)
192 queue_depth = TW_Q_LENGTH-2;
193 scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth);
194 return queue_depth;
195 } /* End twa_change_queue_depth() */
196
197 /* Create sysfs 'stats' entry */
198 static struct device_attribute twa_host_stats_attr = {
199 .attr = {
200 .name = "stats",
201 .mode = S_IRUGO,
202 },
203 .show = twa_show_stats
204 };
205
206 /* Host attributes initializer */
207 static struct device_attribute *twa_host_attrs[] = {
208 &twa_host_stats_attr,
209 NULL,
210 };
211
212 /* File operations struct for character device */
213 static const struct file_operations twa_fops = {
214 .owner = THIS_MODULE,
215 .ioctl = twa_chrdev_ioctl,
216 .open = twa_chrdev_open,
217 .release = NULL
218 };
219
220 /* This function will complete an aen request from the isr */
221 static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id)
222 {
223 TW_Command_Full *full_command_packet;
224 TW_Command *command_packet;
225 TW_Command_Apache_Header *header;
226 unsigned short aen;
227 int retval = 1;
228
229 header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
230 tw_dev->posted_request_count--;
231 aen = le16_to_cpu(header->status_block.error);
232 full_command_packet = tw_dev->command_packet_virt[request_id];
233 command_packet = &full_command_packet->command.oldcommand;
234
235 /* First check for internal completion of set param for time sync */
236 if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) {
237 /* Keep reading the queue in case there are more aen's */
238 if (twa_aen_read_queue(tw_dev, request_id))
239 goto out2;
240 else {
241 retval = 0;
242 goto out;
243 }
244 }
245
246 switch (aen) {
247 case TW_AEN_QUEUE_EMPTY:
248 /* Quit reading the queue if this is the last one */
249 break;
250 case TW_AEN_SYNC_TIME_WITH_HOST:
251 twa_aen_sync_time(tw_dev, request_id);
252 retval = 0;
253 goto out;
254 default:
255 twa_aen_queue_event(tw_dev, header);
256
257 /* If there are more aen's, keep reading the queue */
258 if (twa_aen_read_queue(tw_dev, request_id))
259 goto out2;
260 else {
261 retval = 0;
262 goto out;
263 }
264 }
265 retval = 0;
266 out2:
267 tw_dev->state[request_id] = TW_S_COMPLETED;
268 twa_free_request_id(tw_dev, request_id);
269 clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
270 out:
271 return retval;
272 } /* End twa_aen_complete() */
273
274 /* This function will drain aen queue */
275 static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset)
276 {
277 int request_id = 0;
278 char cdb[TW_MAX_CDB_LEN];
279 TW_SG_Entry sglist[1];
280 int finished = 0, count = 0;
281 TW_Command_Full *full_command_packet;
282 TW_Command_Apache_Header *header;
283 unsigned short aen;
284 int first_reset = 0, queue = 0, retval = 1;
285
286 if (no_check_reset)
287 first_reset = 0;
288 else
289 first_reset = 1;
290
291 full_command_packet = tw_dev->command_packet_virt[request_id];
292 memset(full_command_packet, 0, sizeof(TW_Command_Full));
293
294 /* Initialize cdb */
295 memset(&cdb, 0, TW_MAX_CDB_LEN);
296 cdb[0] = REQUEST_SENSE; /* opcode */
297 cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */
298
299 /* Initialize sglist */
300 memset(&sglist, 0, sizeof(TW_SG_Entry));
301 sglist[0].length = TW_SECTOR_SIZE;
302 sglist[0].address = tw_dev->generic_buffer_phys[request_id];
303
304 if (sglist[0].address & TW_ALIGNMENT_9000_SGL) {
305 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Found unaligned address during AEN drain");
306 goto out;
307 }
308
309 /* Mark internal command */
310 tw_dev->srb[request_id] = NULL;
311
312 do {
313 /* Send command to the board */
314 if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
315 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Error posting request sense");
316 goto out;
317 }
318
319 /* Now poll for completion */
320 if (twa_poll_response(tw_dev, request_id, 30)) {
321 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "No valid response while draining AEN queue");
322 tw_dev->posted_request_count--;
323 goto out;
324 }
325
326 tw_dev->posted_request_count--;
327 header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id];
328 aen = le16_to_cpu(header->status_block.error);
329 queue = 0;
330 count++;
331
332 switch (aen) {
333 case TW_AEN_QUEUE_EMPTY:
334 if (first_reset != 1)
335 goto out;
336 else
337 finished = 1;
338 break;
339 case TW_AEN_SOFT_RESET:
340 if (first_reset == 0)
341 first_reset = 1;
342 else
343 queue = 1;
344 break;
345 case TW_AEN_SYNC_TIME_WITH_HOST:
346 break;
347 default:
348 queue = 1;
349 }
350
351 /* Now queue an event info */
352 if (queue)
353 twa_aen_queue_event(tw_dev, header);
354 } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN));
355
356 if (count == TW_MAX_AEN_DRAIN)
357 goto out;
358
359 retval = 0;
360 out:
361 tw_dev->state[request_id] = TW_S_INITIAL;
362 return retval;
363 } /* End twa_aen_drain_queue() */
364
365 /* This function will queue an event */
366 static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header)
367 {
368 u32 local_time;
369 struct timeval time;
370 TW_Event *event;
371 unsigned short aen;
372 char host[16];
373 char *error_str;
374
375 tw_dev->aen_count++;
376
377 /* Fill out event info */
378 event = tw_dev->event_queue[tw_dev->error_index];
379
380 /* Check for clobber */
381 host[0] = '\0';
382 if (tw_dev->host) {
383 sprintf(host, " scsi%d:", tw_dev->host->host_no);
384 if (event->retrieved == TW_AEN_NOT_RETRIEVED)
385 tw_dev->aen_clobber = 1;
386 }
387
388 aen = le16_to_cpu(header->status_block.error);
389 memset(event, 0, sizeof(TW_Event));
390
391 event->severity = TW_SEV_OUT(header->status_block.severity__reserved);
392 do_gettimeofday(&time);
393 local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60));
394 event->time_stamp_sec = local_time;
395 event->aen_code = aen;
396 event->retrieved = TW_AEN_NOT_RETRIEVED;
397 event->sequence_id = tw_dev->error_sequence_id;
398 tw_dev->error_sequence_id++;
399
400 /* Check for embedded error string */
401 error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]);
402
403 header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0';
404 event->parameter_len = strlen(header->err_specific_desc);
405 memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + (error_str[0] == '\0' ? 0 : (1 + strlen(error_str))));
406 if (event->severity != TW_AEN_SEVERITY_DEBUG)
407 printk(KERN_WARNING "3w-9xxx:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n",
408 host,
409 twa_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)),
410 TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen,
411 error_str[0] == '\0' ? twa_string_lookup(twa_aen_table, aen) : error_str,
412 header->err_specific_desc);
413 else
414 tw_dev->aen_count--;
415
416 if ((tw_dev->error_index + 1) == TW_Q_LENGTH)
417 tw_dev->event_queue_wrapped = 1;
418 tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH;
419 } /* End twa_aen_queue_event() */
420
421 /* This function will read the aen queue from the isr */
422 static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id)
423 {
424 char cdb[TW_MAX_CDB_LEN];
425 TW_SG_Entry sglist[1];
426 TW_Command_Full *full_command_packet;
427 int retval = 1;
428
429 full_command_packet = tw_dev->command_packet_virt[request_id];
430 memset(full_command_packet, 0, sizeof(TW_Command_Full));
431
432 /* Initialize cdb */
433 memset(&cdb, 0, TW_MAX_CDB_LEN);
434 cdb[0] = REQUEST_SENSE; /* opcode */
435 cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */
436
437 /* Initialize sglist */
438 memset(&sglist, 0, sizeof(TW_SG_Entry));
439 sglist[0].length = TW_SECTOR_SIZE;
440 sglist[0].address = tw_dev->generic_buffer_phys[request_id];
441
442 /* Mark internal command */
443 tw_dev->srb[request_id] = NULL;
444
445 /* Now post the command packet */
446 if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) {
447 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "Post failed while reading AEN queue");
448 goto out;
449 }
450 retval = 0;
451 out:
452 return retval;
453 } /* End twa_aen_read_queue() */
454
455 /* This function will look up an AEN severity string */
456 static char *twa_aen_severity_lookup(unsigned char severity_code)
457 {
458 char *retval = NULL;
459
460 if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) ||
461 (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG))
462 goto out;
463
464 retval = twa_aen_severity_table[severity_code];
465 out:
466 return retval;
467 } /* End twa_aen_severity_lookup() */
468
469 /* This function will sync firmware time with the host time */
470 static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id)
471 {
472 u32 schedulertime;
473 struct timeval utc;
474 TW_Command_Full *full_command_packet;
475 TW_Command *command_packet;
476 TW_Param_Apache *param;
477 u32 local_time;
478
479 /* Fill out the command packet */
480 full_command_packet = tw_dev->command_packet_virt[request_id];
481 memset(full_command_packet, 0, sizeof(TW_Command_Full));
482 command_packet = &full_command_packet->command.oldcommand;
483 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM);
484 command_packet->request_id = request_id;
485 command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
486 command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE);
487 command_packet->size = TW_COMMAND_SIZE;
488 command_packet->byte6_offset.parameter_count = cpu_to_le16(1);
489
490 /* Setup the param */
491 param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
492 memset(param, 0, TW_SECTOR_SIZE);
493 param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */
494 param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */
495 param->parameter_size_bytes = cpu_to_le16(4);
496
497 /* Convert system time in UTC to local time seconds since last
498 Sunday 12:00AM */
499 do_gettimeofday(&utc);
500 local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60));
501 schedulertime = local_time - (3 * 86400);
502 schedulertime = cpu_to_le32(schedulertime % 604800);
503
504 memcpy(param->data, &schedulertime, sizeof(u32));
505
506 /* Mark internal command */
507 tw_dev->srb[request_id] = NULL;
508
509 /* Now post the command */
510 twa_post_command_packet(tw_dev, request_id, 1);
511 } /* End twa_aen_sync_time() */
512
513 /* This function will allocate memory and check if it is correctly aligned */
514 static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which)
515 {
516 int i;
517 dma_addr_t dma_handle;
518 unsigned long *cpu_addr;
519 int retval = 1;
520
521 cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle);
522 if (!cpu_addr) {
523 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed");
524 goto out;
525 }
526
527 if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) {
528 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory");
529 pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle);
530 goto out;
531 }
532
533 memset(cpu_addr, 0, size*TW_Q_LENGTH);
534
535 for (i = 0; i < TW_Q_LENGTH; i++) {
536 switch(which) {
537 case 0:
538 tw_dev->command_packet_phys[i] = dma_handle+(i*size);
539 tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size));
540 break;
541 case 1:
542 tw_dev->generic_buffer_phys[i] = dma_handle+(i*size);
543 tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size));
544 break;
545 }
546 }
547 retval = 0;
548 out:
549 return retval;
550 } /* End twa_allocate_memory() */
551
552 /* This function will check the status register for unexpected bits */
553 static int twa_check_bits(u32 status_reg_value)
554 {
555 int retval = 1;
556
557 if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS)
558 goto out;
559 if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0)
560 goto out;
561
562 retval = 0;
563 out:
564 return retval;
565 } /* End twa_check_bits() */
566
567 /* This function will check the srl and decide if we are compatible */
568 static int twa_check_srl(TW_Device_Extension *tw_dev, int *flashed)
569 {
570 int retval = 1;
571 unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0;
572 unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0;
573 u32 init_connect_result = 0;
574
575 if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS,
576 TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL,
577 TW_9000_ARCH_ID, TW_CURRENT_DRIVER_BRANCH,
578 TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl,
579 &fw_on_ctlr_arch_id, &fw_on_ctlr_branch,
580 &fw_on_ctlr_build, &init_connect_result)) {
581 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "Initconnection failed while checking SRL");
582 goto out;
583 }
584
585 tw_dev->tw_compat_info.working_srl = fw_on_ctlr_srl;
586 tw_dev->tw_compat_info.working_branch = fw_on_ctlr_branch;
587 tw_dev->tw_compat_info.working_build = fw_on_ctlr_build;
588
589 /* Try base mode compatibility */
590 if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) {
591 if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS,
592 TW_EXTENDED_INIT_CONNECT,
593 TW_BASE_FW_SRL, TW_9000_ARCH_ID,
594 TW_BASE_FW_BRANCH, TW_BASE_FW_BUILD,
595 &fw_on_ctlr_srl, &fw_on_ctlr_arch_id,
596 &fw_on_ctlr_branch, &fw_on_ctlr_build,
597 &init_connect_result)) {
598 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Initconnection (base mode) failed while checking SRL");
599 goto out;
600 }
601 if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) {
602 if (TW_CURRENT_DRIVER_SRL > fw_on_ctlr_srl) {
603 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x32, "Firmware and driver incompatibility: please upgrade firmware");
604 } else {
605 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x33, "Firmware and driver incompatibility: please upgrade driver");
606 }
607 goto out;
608 }
609 tw_dev->tw_compat_info.working_srl = TW_BASE_FW_SRL;
610 tw_dev->tw_compat_info.working_branch = TW_BASE_FW_BRANCH;
611 tw_dev->tw_compat_info.working_build = TW_BASE_FW_BUILD;
612 }
613
614 /* Load rest of compatibility struct */
615 strncpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION));
616 tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL;
617 tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH;
618 tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD;
619 tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL;
620 tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH;
621 tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD;
622 tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl;
623 tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch;
624 tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build;
625
626 retval = 0;
627 out:
628 return retval;
629 } /* End twa_check_srl() */
630
631 /* This function handles ioctl for the character device */
632 static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg)
633 {
634 long timeout;
635 unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0;
636 dma_addr_t dma_handle;
637 int request_id = 0;
638 unsigned int sequence_id = 0;
639 unsigned char event_index, start_index;
640 TW_Ioctl_Driver_Command driver_command;
641 TW_Ioctl_Buf_Apache *tw_ioctl;
642 TW_Lock *tw_lock;
643 TW_Command_Full *full_command_packet;
644 TW_Compatibility_Info *tw_compat_info;
645 TW_Event *event;
646 struct timeval current_time;
647 u32 current_time_ms;
648 TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)];
649 int retval = TW_IOCTL_ERROR_OS_EFAULT;
650 void __user *argp = (void __user *)arg;
651
652 /* Only let one of these through at a time */
653 if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) {
654 retval = TW_IOCTL_ERROR_OS_EINTR;
655 goto out;
656 }
657
658 /* First copy down the driver command */
659 if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command)))
660 goto out2;
661
662 /* Check data buffer size */
663 if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) {
664 retval = TW_IOCTL_ERROR_OS_EINVAL;
665 goto out2;
666 }
667
668 /* Hardware can only do multiple of 512 byte transfers */
669 data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511;
670
671 /* Now allocate ioctl buf memory */
672 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);
673 if (!cpu_addr) {
674 retval = TW_IOCTL_ERROR_OS_ENOMEM;
675 goto out2;
676 }
677
678 tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr;
679
680 /* Now copy down the entire ioctl */
681 if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1))
682 goto out3;
683
684 /* See which ioctl we are doing */
685 switch (cmd) {
686 case TW_IOCTL_FIRMWARE_PASS_THROUGH:
687 spin_lock_irqsave(tw_dev->host->host_lock, flags);
688 twa_get_request_id(tw_dev, &request_id);
689
690 /* Flag internal command */
691 tw_dev->srb[request_id] = NULL;
692
693 /* Flag chrdev ioctl */
694 tw_dev->chrdev_request_id = request_id;
695
696 full_command_packet = &tw_ioctl->firmware_command;
697
698 /* Load request id and sglist for both command types */
699 twa_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted);
700
701 memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full));
702
703 /* Now post the command packet to the controller */
704 twa_post_command_packet(tw_dev, request_id, 1);
705 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
706
707 timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ;
708
709 /* Now wait for command to complete */
710 timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout);
711
712 /* We timed out, and didn't get an interrupt */
713 if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) {
714 /* Now we need to reset the board */
715 printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n",
716 tw_dev->host->host_no, TW_DRIVER, 0x37,
717 cmd);
718 retval = TW_IOCTL_ERROR_OS_EIO;
719 twa_reset_device_extension(tw_dev);
720 goto out3;
721 }
722
723 /* Now copy in the command packet response */
724 memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full));
725
726 /* Now complete the io */
727 spin_lock_irqsave(tw_dev->host->host_lock, flags);
728 tw_dev->posted_request_count--;
729 tw_dev->state[request_id] = TW_S_COMPLETED;
730 twa_free_request_id(tw_dev, request_id);
731 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
732 break;
733 case TW_IOCTL_GET_COMPATIBILITY_INFO:
734 tw_ioctl->driver_command.status = 0;
735 /* Copy compatiblity struct into ioctl data buffer */
736 tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer;
737 memcpy(tw_compat_info, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info));
738 break;
739 case TW_IOCTL_GET_LAST_EVENT:
740 if (tw_dev->event_queue_wrapped) {
741 if (tw_dev->aen_clobber) {
742 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
743 tw_dev->aen_clobber = 0;
744 } else
745 tw_ioctl->driver_command.status = 0;
746 } else {
747 if (!tw_dev->error_index) {
748 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
749 break;
750 }
751 tw_ioctl->driver_command.status = 0;
752 }
753 event_index = (tw_dev->error_index - 1 + TW_Q_LENGTH) % TW_Q_LENGTH;
754 memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event));
755 tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED;
756 break;
757 case TW_IOCTL_GET_FIRST_EVENT:
758 if (tw_dev->event_queue_wrapped) {
759 if (tw_dev->aen_clobber) {
760 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
761 tw_dev->aen_clobber = 0;
762 } else
763 tw_ioctl->driver_command.status = 0;
764 event_index = tw_dev->error_index;
765 } else {
766 if (!tw_dev->error_index) {
767 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
768 break;
769 }
770 tw_ioctl->driver_command.status = 0;
771 event_index = 0;
772 }
773 memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event));
774 tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED;
775 break;
776 case TW_IOCTL_GET_NEXT_EVENT:
777 event = (TW_Event *)tw_ioctl->data_buffer;
778 sequence_id = event->sequence_id;
779 tw_ioctl->driver_command.status = 0;
780
781 if (tw_dev->event_queue_wrapped) {
782 if (tw_dev->aen_clobber) {
783 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
784 tw_dev->aen_clobber = 0;
785 }
786 start_index = tw_dev->error_index;
787 } else {
788 if (!tw_dev->error_index) {
789 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
790 break;
791 }
792 start_index = 0;
793 }
794 event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id + 1) % TW_Q_LENGTH;
795
796 if (!(tw_dev->event_queue[event_index]->sequence_id > sequence_id)) {
797 if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)
798 tw_dev->aen_clobber = 1;
799 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
800 break;
801 }
802 memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event));
803 tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED;
804 break;
805 case TW_IOCTL_GET_PREVIOUS_EVENT:
806 event = (TW_Event *)tw_ioctl->data_buffer;
807 sequence_id = event->sequence_id;
808 tw_ioctl->driver_command.status = 0;
809
810 if (tw_dev->event_queue_wrapped) {
811 if (tw_dev->aen_clobber) {
812 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER;
813 tw_dev->aen_clobber = 0;
814 }
815 start_index = tw_dev->error_index;
816 } else {
817 if (!tw_dev->error_index) {
818 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
819 break;
820 }
821 start_index = 0;
822 }
823 event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id - 1) % TW_Q_LENGTH;
824
825 if (!(tw_dev->event_queue[event_index]->sequence_id < sequence_id)) {
826 if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER)
827 tw_dev->aen_clobber = 1;
828 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS;
829 break;
830 }
831 memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event));
832 tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED;
833 break;
834 case TW_IOCTL_GET_LOCK:
835 tw_lock = (TW_Lock *)tw_ioctl->data_buffer;
836 do_gettimeofday(&current_time);
837 current_time_ms = (current_time.tv_sec * 1000) + (current_time.tv_usec / 1000);
838
839 if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) || (current_time_ms >= tw_dev->ioctl_msec)) {
840 tw_dev->ioctl_sem_lock = 1;
841 tw_dev->ioctl_msec = current_time_ms + tw_lock->timeout_msec;
842 tw_ioctl->driver_command.status = 0;
843 tw_lock->time_remaining_msec = tw_lock->timeout_msec;
844 } else {
845 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED;
846 tw_lock->time_remaining_msec = tw_dev->ioctl_msec - current_time_ms;
847 }
848 break;
849 case TW_IOCTL_RELEASE_LOCK:
850 if (tw_dev->ioctl_sem_lock == 1) {
851 tw_dev->ioctl_sem_lock = 0;
852 tw_ioctl->driver_command.status = 0;
853 } else {
854 tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED;
855 }
856 break;
857 default:
858 retval = TW_IOCTL_ERROR_OS_ENOTTY;
859 goto out3;
860 }
861
862 /* Now copy the entire response to userspace */
863 if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0)
864 retval = 0;
865 out3:
866 /* Now free ioctl buf memory */
867 dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle);
868 out2:
869 mutex_unlock(&tw_dev->ioctl_lock);
870 out:
871 return retval;
872 } /* End twa_chrdev_ioctl() */
873
874 /* This function handles open for the character device */
875 /* NOTE that this function will race with remove. */
876 static int twa_chrdev_open(struct inode *inode, struct file *file)
877 {
878 unsigned int minor_number;
879 int retval = TW_IOCTL_ERROR_OS_ENODEV;
880
881 cycle_kernel_lock();
882 minor_number = iminor(inode);
883 if (minor_number >= twa_device_extension_count)
884 goto out;
885 retval = 0;
886 out:
887 return retval;
888 } /* End twa_chrdev_open() */
889
890 /* This function will print readable messages from status register errors */
891 static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value)
892 {
893 int retval = 1;
894
895 /* Check for various error conditions and handle them appropriately */
896 if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) {
897 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "PCI Parity Error: clearing");
898 writel(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
899 }
900
901 if (status_reg_value & TW_STATUS_PCI_ABORT) {
902 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "PCI Abort: clearing");
903 writel(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev));
904 pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT);
905 }
906
907 if (status_reg_value & TW_STATUS_QUEUE_ERROR) {
908 if (((tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9650SE) &&
909 (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9690SA)) ||
910 (!test_bit(TW_IN_RESET, &tw_dev->flags)))
911 TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Controller Queue Error: clearing");
912 writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev));
913 }
914
915 if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) {
916 if (tw_dev->reset_print == 0) {
917 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing");
918 tw_dev->reset_print = 1;
919 }
920 goto out;
921 }
922 retval = 0;
923 out:
924 return retval;
925 } /* End twa_decode_bits() */
926
927 /* This function will empty the response queue */
928 static int twa_empty_response_queue(TW_Device_Extension *tw_dev)
929 {
930 u32 status_reg_value, response_que_value;
931 int count = 0, retval = 1;
932
933 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
934
935 while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) {
936 response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
937 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
938 count++;
939 }
940 if (count == TW_MAX_RESPONSE_DRAIN)
941 goto out;
942
943 retval = 0;
944 out:
945 return retval;
946 } /* End twa_empty_response_queue() */
947
948 /* This function will clear the pchip/response queue on 9550SX */
949 static int twa_empty_response_queue_large(TW_Device_Extension *tw_dev)
950 {
951 u32 response_que_value = 0;
952 unsigned long before;
953 int retval = 1;
954
955 if (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9000) {
956 before = jiffies;
957 while ((response_que_value & TW_9550SX_DRAIN_COMPLETED) != TW_9550SX_DRAIN_COMPLETED) {
958 response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR_LARGE(tw_dev));
959 msleep(1);
960 if (time_after(jiffies, before + HZ * 30))
961 goto out;
962 }
963 /* P-chip settle time */
964 msleep(500);
965 retval = 0;
966 } else
967 retval = 0;
968 out:
969 return retval;
970 } /* End twa_empty_response_queue_large() */
971
972 /* This function passes sense keys from firmware to scsi layer */
973 static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host)
974 {
975 TW_Command_Full *full_command_packet;
976 unsigned short error;
977 int retval = 1;
978 char *error_str;
979
980 full_command_packet = tw_dev->command_packet_virt[request_id];
981
982 /* Check for embedded error string */
983 error_str = &(full_command_packet->header.err_specific_desc[strlen(full_command_packet->header.err_specific_desc) + 1]);
984
985 /* Don't print error for Logical unit not supported during rollcall */
986 error = le16_to_cpu(full_command_packet->header.status_block.error);
987 if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE)) {
988 if (print_host)
989 printk(KERN_WARNING "3w-9xxx: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n",
990 tw_dev->host->host_no,
991 TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
992 full_command_packet->header.status_block.error,
993 error_str[0] == '\0' ?
994 twa_string_lookup(twa_error_table,
995 full_command_packet->header.status_block.error) : error_str,
996 full_command_packet->header.err_specific_desc);
997 else
998 printk(KERN_WARNING "3w-9xxx: ERROR: (0x%02X:0x%04X): %s:%s.\n",
999 TW_MESSAGE_SOURCE_CONTROLLER_ERROR,
1000 full_command_packet->header.status_block.error,
1001 error_str[0] == '\0' ?
1002 twa_string_lookup(twa_error_table,
1003 full_command_packet->header.status_block.error) : error_str,
1004 full_command_packet->header.err_specific_desc);
1005 }
1006
1007 if (copy_sense) {
1008 memcpy(tw_dev->srb[request_id]->sense_buffer, full_command_packet->header.sense_data, TW_SENSE_DATA_LENGTH);
1009 tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1);
1010 retval = TW_ISR_DONT_RESULT;
1011 goto out;
1012 }
1013 retval = 0;
1014 out:
1015 return retval;
1016 } /* End twa_fill_sense() */
1017
1018 /* This function will free up device extension resources */
1019 static void twa_free_device_extension(TW_Device_Extension *tw_dev)
1020 {
1021 if (tw_dev->command_packet_virt[0])
1022 pci_free_consistent(tw_dev->tw_pci_dev,
1023 sizeof(TW_Command_Full)*TW_Q_LENGTH,
1024 tw_dev->command_packet_virt[0],
1025 tw_dev->command_packet_phys[0]);
1026
1027 if (tw_dev->generic_buffer_virt[0])
1028 pci_free_consistent(tw_dev->tw_pci_dev,
1029 TW_SECTOR_SIZE*TW_Q_LENGTH,
1030 tw_dev->generic_buffer_virt[0],
1031 tw_dev->generic_buffer_phys[0]);
1032
1033 kfree(tw_dev->event_queue[0]);
1034 } /* End twa_free_device_extension() */
1035
1036 /* This function will free a request id */
1037 static void twa_free_request_id(TW_Device_Extension *tw_dev, int request_id)
1038 {
1039 tw_dev->free_queue[tw_dev->free_tail] = request_id;
1040 tw_dev->state[request_id] = TW_S_FINISHED;
1041 tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH;
1042 } /* End twa_free_request_id() */
1043
1044 /* This function will get parameter table entries from the firmware */
1045 static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes)
1046 {
1047 TW_Command_Full *full_command_packet;
1048 TW_Command *command_packet;
1049 TW_Param_Apache *param;
1050 void *retval = NULL;
1051
1052 /* Setup the command packet */
1053 full_command_packet = tw_dev->command_packet_virt[request_id];
1054 memset(full_command_packet, 0, sizeof(TW_Command_Full));
1055 command_packet = &full_command_packet->command.oldcommand;
1056
1057 command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM);
1058 command_packet->size = TW_COMMAND_SIZE;
1059 command_packet->request_id = request_id;
1060 command_packet->byte6_offset.block_count = cpu_to_le16(1);
1061
1062 /* Now setup the param */
1063 param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id];
1064 memset(param, 0, TW_SECTOR_SIZE);
1065 param->table_id = cpu_to_le16(table_id | 0x8000);
1066 param->parameter_id = cpu_to_le16(parameter_id);
1067 param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes);
1068
1069 command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
1070 command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE);
1071
1072 /* Post the command packet to the board */
1073 twa_post_command_packet(tw_dev, request_id, 1);
1074
1075 /* Poll for completion */
1076 if (twa_poll_response(tw_dev, request_id, 30))
1077 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "No valid response during get param")
1078 else
1079 retval = (void *)&(param->data[0]);
1080
1081 tw_dev->posted_request_count--;
1082 tw_dev->state[request_id] = TW_S_INITIAL;
1083
1084 return retval;
1085 } /* End twa_get_param() */
1086
1087 /* This function will assign an available request id */
1088 static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id)
1089 {
1090 *request_id = tw_dev->free_queue[tw_dev->free_head];
1091 tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH;
1092 tw_dev->state[*request_id] = TW_S_STARTED;
1093 } /* End twa_get_request_id() */
1094
1095 /* This function will send an initconnection command to controller */
1096 static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits,
1097 u32 set_features, unsigned short current_fw_srl,
1098 unsigned short current_fw_arch_id,
1099 unsigned short current_fw_branch,
1100 unsigned short current_fw_build,
1101 unsigned short *fw_on_ctlr_srl,
1102 unsigned short *fw_on_ctlr_arch_id,
1103 unsigned short *fw_on_ctlr_branch,
1104 unsigned short *fw_on_ctlr_build,
1105 u32 *init_connect_result)
1106 {
1107 TW_Command_Full *full_command_packet;
1108 TW_Initconnect *tw_initconnect;
1109 int request_id = 0, retval = 1;
1110
1111 /* Initialize InitConnection command packet */
1112 full_command_packet = tw_dev->command_packet_virt[request_id];
1113 memset(full_command_packet, 0, sizeof(TW_Command_Full));
1114 full_command_packet->header.header_desc.size_header = 128;
1115
1116 tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand;
1117 tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION);
1118 tw_initconnect->request_id = request_id;
1119 tw_initconnect->message_credits = cpu_to_le16(message_credits);
1120 tw_initconnect->features = set_features;
1121
1122 /* Turn on 64-bit sgl support if we need to */
1123 tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0;
1124
1125 tw_initconnect->features = cpu_to_le32(tw_initconnect->features);
1126
1127 if (set_features & TW_EXTENDED_INIT_CONNECT) {
1128 tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED;
1129 tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl);
1130 tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id);
1131 tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch);
1132 tw_initconnect->fw_build = cpu_to_le16(current_fw_build);
1133 } else
1134 tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE;
1135
1136 /* Send command packet to the board */
1137 twa_post_command_packet(tw_dev, request_id, 1);
1138
1139 /* Poll for completion */
1140 if (twa_poll_response(tw_dev, request_id, 30)) {
1141 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "No valid response during init connection");
1142 } else {
1143 if (set_features & TW_EXTENDED_INIT_CONNECT) {
1144 *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl);
1145 *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id);
1146 *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch);
1147 *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build);
1148 *init_connect_result = le32_to_cpu(tw_initconnect->result);
1149 }
1150 retval = 0;
1151 }
1152
1153 tw_dev->posted_request_count--;
1154 tw_dev->state[request_id] = TW_S_INITIAL;
1155
1156 return retval;
1157 } /* End twa_initconnection() */
1158
1159 /* This function will initialize the fields of a device extension */
1160 static int twa_initialize_device_extension(TW_Device_Extension *tw_dev)
1161 {
1162 int i, retval = 1;
1163
1164 /* Initialize command packet buffers */
1165 if (twa_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) {
1166 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Command packet memory allocation failed");
1167 goto out;
1168 }
1169
1170 /* Initialize generic buffer */
1171 if (twa_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) {
1172 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x17, "Generic memory allocation failed");
1173 goto out;
1174 }
1175
1176 /* Allocate event info space */
1177 tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL);
1178 if (!tw_dev->event_queue[0]) {
1179 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed");
1180 goto out;
1181 }
1182
1183
1184 for (i = 0; i < TW_Q_LENGTH; i++) {
1185 tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event)));
1186 tw_dev->free_queue[i] = i;
1187 tw_dev->state[i] = TW_S_INITIAL;
1188 }
1189
1190 tw_dev->pending_head = TW_Q_START;
1191 tw_dev->pending_tail = TW_Q_START;
1192 tw_dev->free_head = TW_Q_START;
1193 tw_dev->free_tail = TW_Q_START;
1194 tw_dev->error_sequence_id = 1;
1195 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1196
1197 mutex_init(&tw_dev->ioctl_lock);
1198 init_waitqueue_head(&tw_dev->ioctl_wqueue);
1199
1200 retval = 0;
1201 out:
1202 return retval;
1203 } /* End twa_initialize_device_extension() */
1204
1205 /* This function is the interrupt service routine */
1206 static irqreturn_t twa_interrupt(int irq, void *dev_instance)
1207 {
1208 int request_id, error = 0;
1209 u32 status_reg_value;
1210 TW_Response_Queue response_que;
1211 TW_Command_Full *full_command_packet;
1212 TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance;
1213 int handled = 0;
1214
1215 /* Get the per adapter lock */
1216 spin_lock(tw_dev->host->host_lock);
1217
1218 /* Read the registers */
1219 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
1220
1221 /* Check if this is our interrupt, otherwise bail */
1222 if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT))
1223 goto twa_interrupt_bail;
1224
1225 handled = 1;
1226
1227 /* If we are resetting, bail */
1228 if (test_bit(TW_IN_RESET, &tw_dev->flags))
1229 goto twa_interrupt_bail;
1230
1231 /* Check controller for errors */
1232 if (twa_check_bits(status_reg_value)) {
1233 if (twa_decode_bits(tw_dev, status_reg_value)) {
1234 TW_CLEAR_ALL_INTERRUPTS(tw_dev);
1235 goto twa_interrupt_bail;
1236 }
1237 }
1238
1239 /* Handle host interrupt */
1240 if (status_reg_value & TW_STATUS_HOST_INTERRUPT)
1241 TW_CLEAR_HOST_INTERRUPT(tw_dev);
1242
1243 /* Handle attention interrupt */
1244 if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) {
1245 TW_CLEAR_ATTENTION_INTERRUPT(tw_dev);
1246 if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) {
1247 twa_get_request_id(tw_dev, &request_id);
1248
1249 error = twa_aen_read_queue(tw_dev, request_id);
1250 if (error) {
1251 tw_dev->state[request_id] = TW_S_COMPLETED;
1252 twa_free_request_id(tw_dev, request_id);
1253 clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags);
1254 }
1255 }
1256 }
1257
1258 /* Handle command interrupt */
1259 if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) {
1260 TW_MASK_COMMAND_INTERRUPT(tw_dev);
1261 /* Drain as many pending commands as we can */
1262 while (tw_dev->pending_request_count > 0) {
1263 request_id = tw_dev->pending_queue[tw_dev->pending_head];
1264 if (tw_dev->state[request_id] != TW_S_PENDING) {
1265 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x19, "Found request id that wasn't pending");
1266 TW_CLEAR_ALL_INTERRUPTS(tw_dev);
1267 goto twa_interrupt_bail;
1268 }
1269 if (twa_post_command_packet(tw_dev, request_id, 1)==0) {
1270 tw_dev->pending_head = (tw_dev->pending_head + 1) % TW_Q_LENGTH;
1271 tw_dev->pending_request_count--;
1272 } else {
1273 /* If we get here, we will continue re-posting on the next command interrupt */
1274 break;
1275 }
1276 }
1277 }
1278
1279 /* Handle response interrupt */
1280 if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) {
1281
1282 /* Drain the response queue from the board */
1283 while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) {
1284 /* Complete the response */
1285 response_que.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
1286 request_id = TW_RESID_OUT(response_que.response_id);
1287 full_command_packet = tw_dev->command_packet_virt[request_id];
1288 error = 0;
1289 /* Check for command packet errors */
1290 if (full_command_packet->command.newcommand.status != 0) {
1291 if (tw_dev->srb[request_id] != NULL) {
1292 error = twa_fill_sense(tw_dev, request_id, 1, 1);
1293 } else {
1294 /* Skip ioctl error prints */
1295 if (request_id != tw_dev->chrdev_request_id) {
1296 error = twa_fill_sense(tw_dev, request_id, 0, 1);
1297 }
1298 }
1299 }
1300
1301 /* Check for correct state */
1302 if (tw_dev->state[request_id] != TW_S_POSTED) {
1303 if (tw_dev->srb[request_id] != NULL) {
1304 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted");
1305 TW_CLEAR_ALL_INTERRUPTS(tw_dev);
1306 goto twa_interrupt_bail;
1307 }
1308 }
1309
1310 /* Check for internal command completion */
1311 if (tw_dev->srb[request_id] == NULL) {
1312 if (request_id != tw_dev->chrdev_request_id) {
1313 if (twa_aen_complete(tw_dev, request_id))
1314 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt");
1315 } else {
1316 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
1317 wake_up(&tw_dev->ioctl_wqueue);
1318 }
1319 } else {
1320 struct scsi_cmnd *cmd;
1321
1322 cmd = tw_dev->srb[request_id];
1323
1324 twa_scsiop_execute_scsi_complete(tw_dev, request_id);
1325 /* If no error command was a success */
1326 if (error == 0) {
1327 cmd->result = (DID_OK << 16);
1328 }
1329
1330 /* If error, command failed */
1331 if (error == 1) {
1332 /* Ask for a host reset */
1333 cmd->result = (DID_OK << 16) | (CHECK_CONDITION << 1);
1334 }
1335
1336 /* Report residual bytes for single sgl */
1337 if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) {
1338 if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id]))
1339 scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length);
1340 }
1341
1342 /* Now complete the io */
1343 tw_dev->state[request_id] = TW_S_COMPLETED;
1344 twa_free_request_id(tw_dev, request_id);
1345 tw_dev->posted_request_count--;
1346 tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]);
1347 twa_unmap_scsi_data(tw_dev, request_id);
1348 }
1349
1350 /* Check for valid status after each drain */
1351 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
1352 if (twa_check_bits(status_reg_value)) {
1353 if (twa_decode_bits(tw_dev, status_reg_value)) {
1354 TW_CLEAR_ALL_INTERRUPTS(tw_dev);
1355 goto twa_interrupt_bail;
1356 }
1357 }
1358 }
1359 }
1360
1361 twa_interrupt_bail:
1362 spin_unlock(tw_dev->host->host_lock);
1363 return IRQ_RETVAL(handled);
1364 } /* End twa_interrupt() */
1365
1366 /* This function will load the request id and various sgls for ioctls */
1367 static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length)
1368 {
1369 TW_Command *oldcommand;
1370 TW_Command_Apache *newcommand;
1371 TW_SG_Entry *sgl;
1372 unsigned int pae = 0;
1373
1374 if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4))
1375 pae = 1;
1376
1377 if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) {
1378 newcommand = &full_command_packet->command.newcommand;
1379 newcommand->request_id__lunl =
1380 cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id));
1381 newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
1382 newcommand->sg_list[0].length = cpu_to_le32(length);
1383 newcommand->sgl_entries__lunh =
1384 cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), 1));
1385 } else {
1386 oldcommand = &full_command_packet->command.oldcommand;
1387 oldcommand->request_id = request_id;
1388
1389 if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) {
1390 /* Load the sg list */
1391 if (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)
1392 sgl = (TW_SG_Entry *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry)/4) + pae);
1393 else
1394 sgl = (TW_SG_Entry *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset));
1395 sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1);
1396 sgl->length = cpu_to_le32(length);
1397
1398 oldcommand->size += pae;
1399 }
1400 }
1401 } /* End twa_load_sgl() */
1402
1403 /* This function will perform a pci-dma mapping for a scatter gather list */
1404 static int twa_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id)
1405 {
1406 int use_sg;
1407 struct scsi_cmnd *cmd = tw_dev->srb[request_id];
1408
1409 use_sg = scsi_dma_map(cmd);
1410 if (!use_sg)
1411 return 0;
1412 else if (use_sg < 0) {
1413 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list");
1414 return 0;
1415 }
1416
1417 cmd->SCp.phase = TW_PHASE_SGLIST;
1418 cmd->SCp.have_data_in = use_sg;
1419
1420 return use_sg;
1421 } /* End twa_map_scsi_sg_data() */
1422
1423 /* This function will poll for a response interrupt of a request */
1424 static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds)
1425 {
1426 int retval = 1, found = 0, response_request_id;
1427 TW_Response_Queue response_queue;
1428 TW_Command_Full *full_command_packet = tw_dev->command_packet_virt[request_id];
1429
1430 if (twa_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds) == 0) {
1431 response_queue.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev));
1432 response_request_id = TW_RESID_OUT(response_queue.response_id);
1433 if (request_id != response_request_id) {
1434 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "Found unexpected request id while polling for response");
1435 goto out;
1436 }
1437 if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) {
1438 if (full_command_packet->command.newcommand.status != 0) {
1439 /* bad response */
1440 twa_fill_sense(tw_dev, request_id, 0, 0);
1441 goto out;
1442 }
1443 found = 1;
1444 } else {
1445 if (full_command_packet->command.oldcommand.status != 0) {
1446 /* bad response */
1447 twa_fill_sense(tw_dev, request_id, 0, 0);
1448 goto out;
1449 }
1450 found = 1;
1451 }
1452 }
1453
1454 if (found)
1455 retval = 0;
1456 out:
1457 return retval;
1458 } /* End twa_poll_response() */
1459
1460 /* This function will poll the status register for a flag */
1461 static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds)
1462 {
1463 u32 status_reg_value;
1464 unsigned long before;
1465 int retval = 1;
1466
1467 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
1468 before = jiffies;
1469
1470 if (twa_check_bits(status_reg_value))
1471 twa_decode_bits(tw_dev, status_reg_value);
1472
1473 while ((status_reg_value & flag) != flag) {
1474 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
1475
1476 if (twa_check_bits(status_reg_value))
1477 twa_decode_bits(tw_dev, status_reg_value);
1478
1479 if (time_after(jiffies, before + HZ * seconds))
1480 goto out;
1481
1482 msleep(50);
1483 }
1484 retval = 0;
1485 out:
1486 return retval;
1487 } /* End twa_poll_status() */
1488
1489 /* This function will poll the status register for disappearance of a flag */
1490 static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds)
1491 {
1492 u32 status_reg_value;
1493 unsigned long before;
1494 int retval = 1;
1495
1496 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
1497 before = jiffies;
1498
1499 if (twa_check_bits(status_reg_value))
1500 twa_decode_bits(tw_dev, status_reg_value);
1501
1502 while ((status_reg_value & flag) != 0) {
1503 status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev));
1504 if (twa_check_bits(status_reg_value))
1505 twa_decode_bits(tw_dev, status_reg_value);
1506
1507 if (time_after(jiffies, before + HZ * seconds))
1508 goto out;
1509
1510 msleep(50);
1511 }
1512 retval = 0;
1513 out:
1514 return retval;
1515 } /* End twa_poll_status_gone() */
1516
1517 /* This function will attempt to post a command packet to the board */
1518 static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal)
1519 {
1520 u32 status_reg_value;
1521 dma_addr_t command_que_value;
1522 int retval = 1;
1523
1524 command_que_value = tw_dev->command_packet_phys[request_id];
1525
1526 /* For 9650SE write low 4 bytes first */
1527 if ((tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9650SE) ||
1528 (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)) {
1529 command_que_value += TW_COMMAND_OFFSET;
1530 writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR_LARGE(tw_dev));
1531 }
1532
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 if ((tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9650SE) ||
1560 (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)) {
1561 /* Now write upper 4 bytes */
1562 writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR_LARGE(tw_dev) + 0x4);
1563 } else {
1564 if (sizeof(dma_addr_t) > 4) {
1565 command_que_value += TW_COMMAND_OFFSET;
1566 writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
1567 writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR(tw_dev) + 0x4);
1568 } else {
1569 writel(TW_COMMAND_OFFSET + command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev));
1570 }
1571 }
1572 tw_dev->state[request_id] = TW_S_POSTED;
1573 tw_dev->posted_request_count++;
1574 if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) {
1575 tw_dev->max_posted_request_count = tw_dev->posted_request_count;
1576 }
1577 }
1578 retval = 0;
1579 out:
1580 return retval;
1581 } /* End twa_post_command_packet() */
1582
1583 /* This function will reset a device extension */
1584 static int twa_reset_device_extension(TW_Device_Extension *tw_dev)
1585 {
1586 int i = 0;
1587 int retval = 1;
1588 unsigned long flags = 0;
1589
1590 set_bit(TW_IN_RESET, &tw_dev->flags);
1591 TW_DISABLE_INTERRUPTS(tw_dev);
1592 TW_MASK_COMMAND_INTERRUPT(tw_dev);
1593 spin_lock_irqsave(tw_dev->host->host_lock, flags);
1594
1595 /* Abort all requests that are in progress */
1596 for (i = 0; i < TW_Q_LENGTH; i++) {
1597 if ((tw_dev->state[i] != TW_S_FINISHED) &&
1598 (tw_dev->state[i] != TW_S_INITIAL) &&
1599 (tw_dev->state[i] != TW_S_COMPLETED)) {
1600 if (tw_dev->srb[i]) {
1601 tw_dev->srb[i]->result = (DID_RESET << 16);
1602 tw_dev->srb[i]->scsi_done(tw_dev->srb[i]);
1603 twa_unmap_scsi_data(tw_dev, i);
1604 }
1605 }
1606 }
1607
1608 /* Reset queues and counts */
1609 for (i = 0; i < TW_Q_LENGTH; i++) {
1610 tw_dev->free_queue[i] = i;
1611 tw_dev->state[i] = TW_S_INITIAL;
1612 }
1613 tw_dev->free_head = TW_Q_START;
1614 tw_dev->free_tail = TW_Q_START;
1615 tw_dev->posted_request_count = 0;
1616 tw_dev->pending_request_count = 0;
1617 tw_dev->pending_head = TW_Q_START;
1618 tw_dev->pending_tail = TW_Q_START;
1619 tw_dev->reset_print = 0;
1620
1621 spin_unlock_irqrestore(tw_dev->host->host_lock, flags);
1622
1623 if (twa_reset_sequence(tw_dev, 1))
1624 goto out;
1625
1626 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
1627 clear_bit(TW_IN_RESET, &tw_dev->flags);
1628 tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE;
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) {
1641 if (do_soft_reset) {
1642 TW_SOFT_RESET(tw_dev);
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 }
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
1732 tw_dev->num_resets++;
1733
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]);
1737
1738 /* Make sure we are not issuing an ioctl or resetting from ioctl */
1739 mutex_lock(&tw_dev->ioctl_lock);
1740
1741 /* Now reset the card and some of the device extension data */
1742 if (twa_reset_device_extension(tw_dev)) {
1743 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2b, "Controller reset failed during scsi host reset");
1744 goto out;
1745 }
1746
1747 retval = SUCCESS;
1748 out:
1749 mutex_unlock(&tw_dev->ioctl_lock);
1750 return retval;
1751 } /* End twa_scsi_eh_reset() */
1752
1753 /* This is the main scsi queue function to handle scsi opcodes */
1754 static int twa_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
1755 {
1756 int request_id, retval;
1757 TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata;
1758
1759 /* If we are resetting due to timed out ioctl, report as busy */
1760 if (test_bit(TW_IN_RESET, &tw_dev->flags)) {
1761 retval = SCSI_MLQUEUE_HOST_BUSY;
1762 goto out;
1763 }
1764
1765 /* Check if this FW supports luns */
1766 if ((SCpnt->device->lun != 0) && (tw_dev->tw_compat_info.working_srl < TW_FW_SRL_LUNS_SUPPORTED)) {
1767 SCpnt->result = (DID_BAD_TARGET << 16);
1768 done(SCpnt);
1769 retval = 0;
1770 goto out;
1771 }
1772
1773 /* Save done function into scsi_cmnd struct */
1774 SCpnt->scsi_done = done;
1775
1776 /* Get a free request id */
1777 twa_get_request_id(tw_dev, &request_id);
1778
1779 /* Save the scsi command for use by the ISR */
1780 tw_dev->srb[request_id] = SCpnt;
1781
1782 /* Initialize phase to zero */
1783 SCpnt->SCp.phase = TW_PHASE_INITIAL;
1784
1785 retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL);
1786 switch (retval) {
1787 case SCSI_MLQUEUE_HOST_BUSY:
1788 twa_free_request_id(tw_dev, request_id);
1789 break;
1790 case 1:
1791 tw_dev->state[request_id] = TW_S_COMPLETED;
1792 twa_free_request_id(tw_dev, request_id);
1793 SCpnt->result = (DID_ERROR << 16);
1794 done(SCpnt);
1795 retval = 0;
1796 }
1797 out:
1798 return retval;
1799 } /* End twa_scsi_queue() */
1800
1801 /* This function hands scsi cdb's to the firmware */
1802 static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg)
1803 {
1804 TW_Command_Full *full_command_packet;
1805 TW_Command_Apache *command_packet;
1806 u32 num_sectors = 0x0;
1807 int i, sg_count;
1808 struct scsi_cmnd *srb = NULL;
1809 struct scatterlist *sglist = NULL, *sg;
1810 int retval = 1;
1811
1812 if (tw_dev->srb[request_id]) {
1813 srb = tw_dev->srb[request_id];
1814 if (scsi_sglist(srb))
1815 sglist = scsi_sglist(srb);
1816 }
1817
1818 /* Initialize command packet */
1819 full_command_packet = tw_dev->command_packet_virt[request_id];
1820 full_command_packet->header.header_desc.size_header = 128;
1821 full_command_packet->header.status_block.error = 0;
1822 full_command_packet->header.status_block.severity__reserved = 0;
1823
1824 command_packet = &full_command_packet->command.newcommand;
1825 command_packet->status = 0;
1826 command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI);
1827
1828 /* We forced 16 byte cdb use earlier */
1829 if (!cdb)
1830 memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN);
1831 else
1832 memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN);
1833
1834 if (srb) {
1835 command_packet->unit = srb->device->id;
1836 command_packet->request_id__lunl =
1837 cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id));
1838 } else {
1839 command_packet->request_id__lunl =
1840 cpu_to_le16(TW_REQ_LUN_IN(0, request_id));
1841 command_packet->unit = 0;
1842 }
1843
1844 command_packet->sgl_offset = 16;
1845
1846 if (!sglistarg) {
1847 /* Map sglist from scsi layer to cmd packet */
1848
1849 if (scsi_sg_count(srb)) {
1850 if ((scsi_sg_count(srb) == 1) &&
1851 (scsi_bufflen(srb) < TW_MIN_SGL_LENGTH)) {
1852 if (srb->sc_data_direction == DMA_TO_DEVICE ||
1853 srb->sc_data_direction == DMA_BIDIRECTIONAL)
1854 scsi_sg_copy_to_buffer(srb,
1855 tw_dev->generic_buffer_virt[request_id],
1856 TW_SECTOR_SIZE);
1857 command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]);
1858 command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH);
1859 } else {
1860 sg_count = twa_map_scsi_sg_data(tw_dev, request_id);
1861 if (sg_count == 0)
1862 goto out;
1863
1864 scsi_for_each_sg(srb, sg, sg_count, i) {
1865 command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg));
1866 command_packet->sg_list[i].length = cpu_to_le32(sg_dma_len(sg));
1867 if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) {
1868 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi");
1869 goto out;
1870 }
1871 }
1872 }
1873 command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id])));
1874 }
1875 } else {
1876 /* Internal cdb post */
1877 for (i = 0; i < use_sg; i++) {
1878 command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address);
1879 command_packet->sg_list[i].length = cpu_to_le32(sglistarg[i].length);
1880 if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) {
1881 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2f, "Found unaligned sgl address during internal post");
1882 goto out;
1883 }
1884 }
1885 command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg));
1886 }
1887
1888 if (srb) {
1889 if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6)
1890 num_sectors = (u32)srb->cmnd[4];
1891
1892 if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10)
1893 num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8);
1894 }
1895
1896 /* Update sector statistic */
1897 tw_dev->sector_count = num_sectors;
1898 if (tw_dev->sector_count > tw_dev->max_sector_count)
1899 tw_dev->max_sector_count = tw_dev->sector_count;
1900
1901 /* Update SG statistics */
1902 if (srb) {
1903 tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]);
1904 if (tw_dev->sgl_entries > tw_dev->max_sgl_entries)
1905 tw_dev->max_sgl_entries = tw_dev->sgl_entries;
1906 }
1907
1908 /* Now post the command to the board */
1909 if (srb) {
1910 retval = twa_post_command_packet(tw_dev, request_id, 0);
1911 } else {
1912 twa_post_command_packet(tw_dev, request_id, 1);
1913 retval = 0;
1914 }
1915 out:
1916 return retval;
1917 } /* End twa_scsiop_execute_scsi() */
1918
1919 /* This function completes an execute scsi operation */
1920 static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id)
1921 {
1922 struct scsi_cmnd *cmd = tw_dev->srb[request_id];
1923
1924 if (scsi_bufflen(cmd) < TW_MIN_SGL_LENGTH &&
1925 (cmd->sc_data_direction == DMA_FROM_DEVICE ||
1926 cmd->sc_data_direction == DMA_BIDIRECTIONAL)) {
1927 if (scsi_sg_count(cmd) == 1) {
1928 void *buf = tw_dev->generic_buffer_virt[request_id];
1929
1930 scsi_sg_copy_from_buffer(cmd, buf, TW_SECTOR_SIZE);
1931 }
1932 }
1933 } /* End twa_scsiop_execute_scsi_complete() */
1934
1935 /* This function tells the controller to shut down */
1936 static void __twa_shutdown(TW_Device_Extension *tw_dev)
1937 {
1938 /* Disable interrupts */
1939 TW_DISABLE_INTERRUPTS(tw_dev);
1940
1941 /* Free up the IRQ */
1942 free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
1943
1944 printk(KERN_WARNING "3w-9xxx: Shutting down host %d.\n", tw_dev->host->host_no);
1945
1946 /* Tell the card we are shutting down */
1947 if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
1948 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x31, "Connection shutdown failed");
1949 } else {
1950 printk(KERN_WARNING "3w-9xxx: Shutdown complete.\n");
1951 }
1952
1953 /* Clear all interrupts just before exit */
1954 TW_CLEAR_ALL_INTERRUPTS(tw_dev);
1955 } /* End __twa_shutdown() */
1956
1957 /* Wrapper for __twa_shutdown */
1958 static void twa_shutdown(struct pci_dev *pdev)
1959 {
1960 struct Scsi_Host *host = pci_get_drvdata(pdev);
1961 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
1962
1963 __twa_shutdown(tw_dev);
1964 } /* End twa_shutdown() */
1965
1966 /* This function will look up a string */
1967 static char *twa_string_lookup(twa_message_type *table, unsigned int code)
1968 {
1969 int index;
1970
1971 for (index = 0; ((code != table[index].code) &&
1972 (table[index].text != (char *)0)); index++);
1973 return(table[index].text);
1974 } /* End twa_string_lookup() */
1975
1976 /* This function will perform a pci-dma unmap */
1977 static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id)
1978 {
1979 struct scsi_cmnd *cmd = tw_dev->srb[request_id];
1980
1981 if (cmd->SCp.phase == TW_PHASE_SGLIST)
1982 scsi_dma_unmap(cmd);
1983 } /* End twa_unmap_scsi_data() */
1984
1985 /* scsi_host_template initializer */
1986 static struct scsi_host_template driver_template = {
1987 .module = THIS_MODULE,
1988 .name = "3ware 9000 Storage Controller",
1989 .queuecommand = twa_scsi_queue,
1990 .eh_host_reset_handler = twa_scsi_eh_reset,
1991 .bios_param = twa_scsi_biosparam,
1992 .change_queue_depth = twa_change_queue_depth,
1993 .can_queue = TW_Q_LENGTH-2,
1994 .this_id = -1,
1995 .sg_tablesize = TW_APACHE_MAX_SGL_LENGTH,
1996 .max_sectors = TW_MAX_SECTORS,
1997 .cmd_per_lun = TW_MAX_CMDS_PER_LUN,
1998 .use_clustering = ENABLE_CLUSTERING,
1999 .shost_attrs = twa_host_attrs,
2000 .emulated = 1
2001 };
2002
2003 /* This function will probe and initialize a card */
2004 static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id)
2005 {
2006 struct Scsi_Host *host = NULL;
2007 TW_Device_Extension *tw_dev;
2008 unsigned long mem_addr, mem_len;
2009 int retval = -ENODEV;
2010
2011 retval = pci_enable_device(pdev);
2012 if (retval) {
2013 TW_PRINTK(host, TW_DRIVER, 0x34, "Failed to enable pci device");
2014 goto out_disable_device;
2015 }
2016
2017 pci_set_master(pdev);
2018 pci_try_set_mwi(pdev);
2019
2020 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
2021 || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2022 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
2023 || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
2024 TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask");
2025 retval = -ENODEV;
2026 goto out_disable_device;
2027 }
2028
2029 host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension));
2030 if (!host) {
2031 TW_PRINTK(host, TW_DRIVER, 0x24, "Failed to allocate memory for device extension");
2032 retval = -ENOMEM;
2033 goto out_disable_device;
2034 }
2035 tw_dev = (TW_Device_Extension *)host->hostdata;
2036
2037 /* Save values to device extension */
2038 tw_dev->host = host;
2039 tw_dev->tw_pci_dev = pdev;
2040
2041 if (twa_initialize_device_extension(tw_dev)) {
2042 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension");
2043 goto out_free_device_extension;
2044 }
2045
2046 /* Request IO regions */
2047 retval = pci_request_regions(pdev, "3w-9xxx");
2048 if (retval) {
2049 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Failed to get mem region");
2050 goto out_free_device_extension;
2051 }
2052
2053 if (pdev->device == PCI_DEVICE_ID_3WARE_9000) {
2054 mem_addr = pci_resource_start(pdev, 1);
2055 mem_len = pci_resource_len(pdev, 1);
2056 } else {
2057 mem_addr = pci_resource_start(pdev, 2);
2058 mem_len = pci_resource_len(pdev, 2);
2059 }
2060
2061 /* Save base address */
2062 tw_dev->base_addr = ioremap(mem_addr, mem_len);
2063 if (!tw_dev->base_addr) {
2064 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap");
2065 goto out_release_mem_region;
2066 }
2067
2068 /* Disable interrupts on the card */
2069 TW_DISABLE_INTERRUPTS(tw_dev);
2070
2071 /* Initialize the card */
2072 if (twa_reset_sequence(tw_dev, 0))
2073 goto out_iounmap;
2074
2075 /* Set host specific parameters */
2076 if ((pdev->device == PCI_DEVICE_ID_3WARE_9650SE) ||
2077 (pdev->device == PCI_DEVICE_ID_3WARE_9690SA))
2078 host->max_id = TW_MAX_UNITS_9650SE;
2079 else
2080 host->max_id = TW_MAX_UNITS;
2081
2082 host->max_cmd_len = TW_MAX_CDB_LEN;
2083
2084 /* Channels aren't supported by adapter */
2085 host->max_lun = TW_MAX_LUNS(tw_dev->tw_compat_info.working_srl);
2086 host->max_channel = 0;
2087
2088 /* Register the card with the kernel SCSI layer */
2089 retval = scsi_add_host(host, &pdev->dev);
2090 if (retval) {
2091 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x27, "scsi add host failed");
2092 goto out_iounmap;
2093 }
2094
2095 pci_set_drvdata(pdev, host);
2096
2097 printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%lx, IRQ: %d.\n",
2098 host->host_no, mem_addr, pdev->irq);
2099 printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n",
2100 host->host_no,
2101 (char *)twa_get_param(tw_dev, 0, TW_VERSION_TABLE,
2102 TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH),
2103 (char *)twa_get_param(tw_dev, 1, TW_VERSION_TABLE,
2104 TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH),
2105 le32_to_cpu(*(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE,
2106 TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH)));
2107
2108 /* Try to enable MSI */
2109 if (use_msi && (pdev->device != PCI_DEVICE_ID_3WARE_9000) &&
2110 !pci_enable_msi(pdev))
2111 set_bit(TW_USING_MSI, &tw_dev->flags);
2112
2113 /* Now setup the interrupt handler */
2114 retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev);
2115 if (retval) {
2116 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x30, "Error requesting IRQ");
2117 goto out_remove_host;
2118 }
2119
2120 twa_device_extension_list[twa_device_extension_count] = tw_dev;
2121 twa_device_extension_count++;
2122
2123 /* Re-enable interrupts on the card */
2124 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
2125
2126 /* Finally, scan the host */
2127 scsi_scan_host(host);
2128
2129 if (twa_major == -1) {
2130 if ((twa_major = register_chrdev (0, "twa", &twa_fops)) < 0)
2131 TW_PRINTK(host, TW_DRIVER, 0x29, "Failed to register character device");
2132 }
2133 return 0;
2134
2135 out_remove_host:
2136 if (test_bit(TW_USING_MSI, &tw_dev->flags))
2137 pci_disable_msi(pdev);
2138 scsi_remove_host(host);
2139 out_iounmap:
2140 iounmap(tw_dev->base_addr);
2141 out_release_mem_region:
2142 pci_release_regions(pdev);
2143 out_free_device_extension:
2144 twa_free_device_extension(tw_dev);
2145 scsi_host_put(host);
2146 out_disable_device:
2147 pci_disable_device(pdev);
2148
2149 return retval;
2150 } /* End twa_probe() */
2151
2152 /* This function is called to remove a device */
2153 static void twa_remove(struct pci_dev *pdev)
2154 {
2155 struct Scsi_Host *host = pci_get_drvdata(pdev);
2156 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
2157
2158 scsi_remove_host(tw_dev->host);
2159
2160 /* Unregister character device */
2161 if (twa_major >= 0) {
2162 unregister_chrdev(twa_major, "twa");
2163 twa_major = -1;
2164 }
2165
2166 /* Shutdown the card */
2167 __twa_shutdown(tw_dev);
2168
2169 /* Disable MSI if enabled */
2170 if (test_bit(TW_USING_MSI, &tw_dev->flags))
2171 pci_disable_msi(pdev);
2172
2173 /* Free IO remapping */
2174 iounmap(tw_dev->base_addr);
2175
2176 /* Free up the mem region */
2177 pci_release_regions(pdev);
2178
2179 /* Free up device extension resources */
2180 twa_free_device_extension(tw_dev);
2181
2182 scsi_host_put(tw_dev->host);
2183 pci_disable_device(pdev);
2184 twa_device_extension_count--;
2185 } /* End twa_remove() */
2186
2187 #ifdef CONFIG_PM
2188 /* This function is called on PCI suspend */
2189 static int twa_suspend(struct pci_dev *pdev, pm_message_t state)
2190 {
2191 struct Scsi_Host *host = pci_get_drvdata(pdev);
2192 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
2193
2194 printk(KERN_WARNING "3w-9xxx: Suspending host %d.\n", tw_dev->host->host_no);
2195
2196 TW_DISABLE_INTERRUPTS(tw_dev);
2197 free_irq(tw_dev->tw_pci_dev->irq, tw_dev);
2198
2199 if (test_bit(TW_USING_MSI, &tw_dev->flags))
2200 pci_disable_msi(pdev);
2201
2202 /* Tell the card we are shutting down */
2203 if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) {
2204 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x38, "Connection shutdown failed during suspend");
2205 } else {
2206 printk(KERN_WARNING "3w-9xxx: Suspend complete.\n");
2207 }
2208 TW_CLEAR_ALL_INTERRUPTS(tw_dev);
2209
2210 pci_save_state(pdev);
2211 pci_disable_device(pdev);
2212 pci_set_power_state(pdev, pci_choose_state(pdev, state));
2213
2214 return 0;
2215 } /* End twa_suspend() */
2216
2217 /* This function is called on PCI resume */
2218 static int twa_resume(struct pci_dev *pdev)
2219 {
2220 int retval = 0;
2221 struct Scsi_Host *host = pci_get_drvdata(pdev);
2222 TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata;
2223
2224 printk(KERN_WARNING "3w-9xxx: Resuming host %d.\n", tw_dev->host->host_no);
2225 pci_set_power_state(pdev, PCI_D0);
2226 pci_enable_wake(pdev, PCI_D0, 0);
2227 pci_restore_state(pdev);
2228
2229 retval = pci_enable_device(pdev);
2230 if (retval) {
2231 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x39, "Enable device failed during resume");
2232 return retval;
2233 }
2234
2235 pci_set_master(pdev);
2236 pci_try_set_mwi(pdev);
2237
2238 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64))
2239 || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)))
2240 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
2241 || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) {
2242 TW_PRINTK(host, TW_DRIVER, 0x40, "Failed to set dma mask during resume");
2243 retval = -ENODEV;
2244 goto out_disable_device;
2245 }
2246
2247 /* Initialize the card */
2248 if (twa_reset_sequence(tw_dev, 0)) {
2249 retval = -ENODEV;
2250 goto out_disable_device;
2251 }
2252
2253 /* Now setup the interrupt handler */
2254 retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev);
2255 if (retval) {
2256 TW_PRINTK(tw_dev->host, TW_DRIVER, 0x42, "Error requesting IRQ during resume");
2257 retval = -ENODEV;
2258 goto out_disable_device;
2259 }
2260
2261 /* Now enable MSI if enabled */
2262 if (test_bit(TW_USING_MSI, &tw_dev->flags))
2263 pci_enable_msi(pdev);
2264
2265 /* Re-enable interrupts on the card */
2266 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev);
2267
2268 printk(KERN_WARNING "3w-9xxx: Resume complete.\n");
2269 return 0;
2270
2271 out_disable_device:
2272 scsi_remove_host(host);
2273 pci_disable_device(pdev);
2274
2275 return retval;
2276 } /* End twa_resume() */
2277 #endif
2278
2279 /* PCI Devices supported by this driver */
2280 static struct pci_device_id twa_pci_tbl[] __devinitdata = {
2281 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000,
2282 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2283 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9550SX,
2284 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2285 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9650SE,
2286 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2287 { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9690SA,
2288 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0},
2289 { }
2290 };
2291 MODULE_DEVICE_TABLE(pci, twa_pci_tbl);
2292
2293 /* pci_driver initializer */
2294 static struct pci_driver twa_driver = {
2295 .name = "3w-9xxx",
2296 .id_table = twa_pci_tbl,
2297 .probe = twa_probe,
2298 .remove = twa_remove,
2299 #ifdef CONFIG_PM
2300 .suspend = twa_suspend,
2301 .resume = twa_resume,
2302 #endif
2303 .shutdown = twa_shutdown
2304 };
2305
2306 /* This function is called on driver initialization */
2307 static int __init twa_init(void)
2308 {
2309 printk(KERN_WARNING "3ware 9000 Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION);
2310
2311 return pci_register_driver(&twa_driver);
2312 } /* End twa_init() */
2313
2314 /* This function is called on driver exit */
2315 static void __exit twa_exit(void)
2316 {
2317 pci_unregister_driver(&twa_driver);
2318 } /* End twa_exit() */
2319
2320 module_init(twa_init);
2321 module_exit(twa_exit);
2322
Support for the Chinese Samsung S3C2440 based development boards