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