2 3w-xxxx.c -- 3ware Storage Controller device driver for Linux.
4 Written By: Adam Radford <linuxraid@lsi.com>
5 Modifications By: Joel Jacobson <linux@3ware.com>
6 Arnaldo Carvalho de Melo <acme@conectiva.com.br>
7 Brad Strand <linux@3ware.com>
9 Copyright (C) 1999-2010 3ware Inc.
11 Kernel compatibility By: Andre Hedrick <andre@suse.com>
12 Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com>
14 Further tiny build fixes and trivial hoovering Alan Cox
16 This program is free software; you can redistribute it and/or modify
17 it under the terms of the GNU General Public License as published by
18 the Free Software Foundation; version 2 of the License.
20 This program is distributed in the hope that it will be useful,
21 but WITHOUT ANY WARRANTY; without even the implied warranty of
22 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
23 GNU General Public License for more details.
26 THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
27 CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
28 LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
29 MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
30 solely responsible for determining the appropriateness of using and
31 distributing the Program and assumes all risks associated with its
32 exercise of rights under this Agreement, including but not limited to
33 the risks and costs of program errors, damage to or loss of data,
34 programs or equipment, and unavailability or interruption of operations.
36 DISCLAIMER OF LIABILITY
37 NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
38 DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
39 DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
40 ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
41 TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
42 USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
43 HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
45 You should have received a copy of the GNU General Public License
46 along with this program; if not, write to the Free Software
47 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
49 Bugs/Comments/Suggestions should be mailed to:
52 For more information, goto:
57 0.1.000 - Initial release.
58 0.4.000 - Added support for Asynchronous Event Notification through
60 1.0.000 - Added DPO & FUA bit support for WRITE_10 & WRITE_6 cdb
61 to disable drive write-cache before writes.
62 1.1.000 - Fixed performance bug with DPO & FUA not existing for WRITE_6.
63 1.2.000 - Added support for clean shutdown notification/feature table.
64 1.02.00.001 - Added support for full command packet posts through ioctls
66 Bug fix so hot spare drives don't show up.
67 1.02.00.002 - Fix bug with tw_setfeature() call that caused oops on some
69 08/21/00 - release previously allocated resources on failure at
70 tw_allocate_memory (acme)
71 1.02.00.003 - Fix tw_interrupt() to report error to scsi layer when
72 controller status is non-zero.
73 Added handling of request_sense opcode.
74 Fix possible null pointer dereference in
75 tw_reset_device_extension()
76 1.02.00.004 - Add support for device id of 3ware 7000 series controllers.
77 Make tw_setfeature() call with interrupts disabled.
78 Register interrupt handler before enabling interrupts.
79 Clear attention interrupt before draining aen queue.
80 1.02.00.005 - Allocate bounce buffers and custom queue depth for raid5 for
81 6000 and 5000 series controllers.
82 Reduce polling mdelays causing problems on some systems.
83 Fix use_sg = 1 calculation bug.
84 Check for scsi_register returning NULL.
85 Add aen count to /proc/scsi/3w-xxxx.
86 Remove aen code unit masking in tw_aen_complete().
87 1.02.00.006 - Remove unit from printk in tw_scsi_eh_abort(), causing
89 Fix possible null pointer dereference in tw_scsi_queue()
90 if done function pointer was invalid.
91 1.02.00.007 - Fix possible null pointer dereferences in tw_ioctl().
92 Remove check for invalid done function pointer from
94 1.02.00.008 - Set max sectors per io to TW_MAX_SECTORS in tw_findcards().
95 Add tw_decode_error() for printing readable error messages.
96 Print some useful information on certain aen codes.
97 Add tw_decode_bits() for interpreting status register output.
98 Make scsi_set_pci_device() for kernels >= 2.4.4
99 Fix bug where aen's could be lost before a reset.
100 Re-add spinlocks in tw_scsi_detect().
101 Fix possible null pointer dereference in tw_aen_drain_queue()
102 during initialization.
103 Clear pci parity errors during initialization and during io.
104 1.02.00.009 - Remove redundant increment in tw_state_request_start().
105 Add ioctl support for direct ATA command passthru.
106 Add entire aen code string list.
107 1.02.00.010 - Cleanup queueing code, fix jbod thoughput.
108 Fix get_param for specific units.
109 1.02.00.011 - Fix bug in tw_aen_complete() where aen's could be lost.
110 Fix tw_aen_drain_queue() to display useful info at init.
111 Set tw_host->max_id for 12 port cards.
112 Add ioctl support for raw command packet post from userspace
113 with sglist fragments (parameter and io).
114 1.02.00.012 - Fix read capacity to under report by 1 sector to fix get
116 1.02.00.013 - Fix bug where more AEN codes weren't coming out during
117 driver initialization.
118 Improved handling of PCI aborts.
119 1.02.00.014 - Fix bug in tw_findcards() where AEN code could be lost.
120 Increase timeout in tw_aen_drain_queue() to 30 seconds.
121 1.02.00.015 - Re-write raw command post with data ioctl method.
122 Remove raid5 bounce buffers for raid5 for 6XXX for kernel 2.5
123 Add tw_map/unmap_scsi_sg/single_data() for kernel 2.5
124 Replace io_request_lock with host_lock for kernel 2.5
125 Set max_cmd_len to 16 for 3dm for kernel 2.5
126 1.02.00.016 - Set host->max_sectors back up to 256.
127 1.02.00.017 - Modified pci parity error handling/clearing from config space
128 during initialization.
129 1.02.00.018 - Better handling of request sense opcode and sense information
130 for failed commands. Add tw_decode_sense().
131 Replace all mdelay()'s with scsi_sleep().
132 1.02.00.019 - Revert mdelay's and scsi_sleep's, this caused problems on
134 1.02.00.020 - Add pci_set_dma_mask(), rewrite kmalloc()/virt_to_bus() to
135 pci_alloc/free_consistent().
136 Better alignment checking in tw_allocate_memory().
137 Cleanup tw_initialize_device_extension().
138 1.02.00.021 - Bump cmd_per_lun in SHT to 255 for better jbod performance.
139 Improve handling of errors in tw_interrupt().
140 Add handling/clearing of controller queue error.
141 Empty stale responses before draining aen queue.
142 Fix tw_scsi_eh_abort() to not reset on every io abort.
143 Set can_queue in SHT to 255 to prevent hang from AEN.
144 1.02.00.022 - Fix possible null pointer dereference in tw_scsi_release().
145 1.02.00.023 - Fix bug in tw_aen_drain_queue() where unit # was always zero.
146 1.02.00.024 - Add severity levels to AEN strings.
147 1.02.00.025 - Fix command interrupt spurious error messages.
148 Fix bug in raw command post with data ioctl method.
149 Fix bug where rollcall sometimes failed with cable errors.
150 Print unit # on all command timeouts.
151 1.02.00.026 - Fix possible infinite retry bug with power glitch induced
153 Cleanup some AEN severity levels.
154 1.02.00.027 - Add drive not supported AEN code for SATA controllers.
155 Remove spurious unknown ioctl error message.
156 1.02.00.028 - Fix bug where multiple controllers with no units were the
158 Fix bug where cards were being shut down more than once.
159 1.02.00.029 - Add missing pci_free_consistent() in tw_allocate_memory().
160 Replace pci_map_single() with pci_map_page() for highmem.
161 Check for tw_setfeature() failure.
162 1.02.00.030 - Make driver 64-bit clean.
163 1.02.00.031 - Cleanup polling timeouts/routines in several places.
164 Add support for mode sense opcode.
165 Add support for cache mode page.
166 Add support for synchronize cache opcode.
167 1.02.00.032 - Fix small multicard rollcall bug.
168 Make driver stay loaded with no units for hot add/swap.
169 Add support for "twe" character device for ioctls.
170 Clean up request_id queueing code.
171 Fix tw_scsi_queue() spinlocks.
172 1.02.00.033 - Fix tw_aen_complete() to not queue 'queue empty' AEN's.
173 Initialize queues correctly when loading with no valid units.
174 1.02.00.034 - Fix tw_decode_bits() to handle multiple errors.
175 Add support for user configurable cmd_per_lun.
176 Add support for sht->slave_configure().
177 1.02.00.035 - Improve tw_allocate_memory() memory allocation.
178 Fix tw_chrdev_ioctl() to sleep correctly.
179 1.02.00.036 - Increase character ioctl timeout to 60 seconds.
180 1.02.00.037 - Fix tw_ioctl() to handle all non-data ATA passthru cmds
181 for 'smartmontools' support.
182 1.26.00.038 - Roll driver minor version to 26 to denote kernel 2.6.
183 Add support for cmds_per_lun module parameter.
184 1.26.00.039 - Fix bug in tw_chrdev_ioctl() polling code.
185 Fix data_buffer_length usage in tw_chrdev_ioctl().
186 Update contact information.
187 1.26.02.000 - Convert driver to pci_driver format.
188 1.26.02.001 - Increase max ioctl buffer size to 512 sectors.
189 Make tw_scsi_queue() return 0 for 'Unknown scsi opcode'.
190 Fix tw_remove() to free irq handler/unregister_chrdev()
191 before shutting down card.
192 Change to new 'change_queue_depth' api.
193 Fix 'handled=1' ISR usage, remove bogus IRQ check.
194 1.26.02.002 - Free irq handler in __tw_shutdown().
195 Turn on RCD bit for caching mode page.
196 Serialize reset code.
197 1.26.02.003 - Force 60 second timeout default.
200 #include <linux/module.h>
201 #include <linux/reboot.h>
202 #include <linux/smp_lock.h>
203 #include <linux/spinlock.h>
204 #include <linux/interrupt.h>
205 #include <linux/moduleparam.h>
206 #include <linux/errno.h>
207 #include <linux/types.h>
208 #include <linux/delay.h>
209 #include <linux/gfp.h>
210 #include <linux/pci.h>
211 #include <linux/time.h>
212 #include <linux/mutex.h>
215 #include <asm/uaccess.h>
216 #include <scsi/scsi.h>
217 #include <scsi/scsi_host.h>
218 #include <scsi/scsi_tcq.h>
219 #include <scsi/scsi_cmnd.h>
223 #define TW_DRIVER_VERSION "1.26.02.003"
224 static TW_Device_Extension
*tw_device_extension_list
[TW_MAX_SLOT
];
225 static int tw_device_extension_count
= 0;
226 static int twe_major
= -1;
228 /* Module parameters */
229 MODULE_AUTHOR("LSI");
230 MODULE_DESCRIPTION("3ware Storage Controller Linux Driver");
231 MODULE_LICENSE("GPL");
232 MODULE_VERSION(TW_DRIVER_VERSION
);
234 /* Function prototypes */
235 static int tw_reset_device_extension(TW_Device_Extension
*tw_dev
);
239 /* This function will check the status register for unexpected bits */
240 static int tw_check_bits(u32 status_reg_value
)
242 if ((status_reg_value
& TW_STATUS_EXPECTED_BITS
) != TW_STATUS_EXPECTED_BITS
) {
243 dprintk(KERN_WARNING
"3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value
);
246 if ((status_reg_value
& TW_STATUS_UNEXPECTED_BITS
) != 0) {
247 dprintk(KERN_WARNING
"3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value
);
252 } /* End tw_check_bits() */
254 /* This function will print readable messages from status register errors */
255 static int tw_decode_bits(TW_Device_Extension
*tw_dev
, u32 status_reg_value
, int print_host
)
259 dprintk(KERN_WARNING
"3w-xxxx: tw_decode_bits()\n");
262 sprintf(host
, " scsi%d:", tw_dev
->host
->host_no
);
266 if (status_reg_value
& TW_STATUS_PCI_PARITY_ERROR
) {
267 printk(KERN_WARNING
"3w-xxxx:%s PCI Parity Error: clearing.\n", host
);
268 outl(TW_CONTROL_CLEAR_PARITY_ERROR
, TW_CONTROL_REG_ADDR(tw_dev
));
271 if (status_reg_value
& TW_STATUS_PCI_ABORT
) {
272 printk(KERN_WARNING
"3w-xxxx:%s PCI Abort: clearing.\n", host
);
273 outl(TW_CONTROL_CLEAR_PCI_ABORT
, TW_CONTROL_REG_ADDR(tw_dev
));
274 pci_write_config_word(tw_dev
->tw_pci_dev
, PCI_STATUS
, TW_PCI_CLEAR_PCI_ABORT
);
277 if (status_reg_value
& TW_STATUS_QUEUE_ERROR
) {
278 printk(KERN_WARNING
"3w-xxxx:%s Controller Queue Error: clearing.\n", host
);
279 outl(TW_CONTROL_CLEAR_QUEUE_ERROR
, TW_CONTROL_REG_ADDR(tw_dev
));
282 if (status_reg_value
& TW_STATUS_SBUF_WRITE_ERROR
) {
283 printk(KERN_WARNING
"3w-xxxx:%s SBUF Write Error: clearing.\n", host
);
284 outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR
, TW_CONTROL_REG_ADDR(tw_dev
));
287 if (status_reg_value
& TW_STATUS_MICROCONTROLLER_ERROR
) {
288 if (tw_dev
->reset_print
== 0) {
289 printk(KERN_WARNING
"3w-xxxx:%s Microcontroller Error: clearing.\n", host
);
290 tw_dev
->reset_print
= 1;
296 } /* End tw_decode_bits() */
298 /* This function will poll the status register for a flag */
299 static int tw_poll_status(TW_Device_Extension
*tw_dev
, u32 flag
, int seconds
)
301 u32 status_reg_value
;
302 unsigned long before
;
305 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
308 if (tw_check_bits(status_reg_value
))
309 tw_decode_bits(tw_dev
, status_reg_value
, 0);
311 while ((status_reg_value
& flag
) != flag
) {
312 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
314 if (tw_check_bits(status_reg_value
))
315 tw_decode_bits(tw_dev
, status_reg_value
, 0);
317 if (time_after(jiffies
, before
+ HZ
* seconds
))
325 } /* End tw_poll_status() */
327 /* This function will poll the status register for disappearance of a flag */
328 static int tw_poll_status_gone(TW_Device_Extension
*tw_dev
, u32 flag
, int seconds
)
330 u32 status_reg_value
;
331 unsigned long before
;
334 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
337 if (tw_check_bits(status_reg_value
))
338 tw_decode_bits(tw_dev
, status_reg_value
, 0);
340 while ((status_reg_value
& flag
) != 0) {
341 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
343 if (tw_check_bits(status_reg_value
))
344 tw_decode_bits(tw_dev
, status_reg_value
, 0);
346 if (time_after(jiffies
, before
+ HZ
* seconds
))
354 } /* End tw_poll_status_gone() */
356 /* This function will attempt to post a command packet to the board */
357 static int tw_post_command_packet(TW_Device_Extension
*tw_dev
, int request_id
)
359 u32 status_reg_value
;
360 unsigned long command_que_value
;
362 dprintk(KERN_NOTICE
"3w-xxxx: tw_post_command_packet()\n");
363 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
364 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
366 if (tw_check_bits(status_reg_value
)) {
367 dprintk(KERN_WARNING
"3w-xxxx: tw_post_command_packet(): Unexpected bits.\n");
368 tw_decode_bits(tw_dev
, status_reg_value
, 1);
371 if ((status_reg_value
& TW_STATUS_COMMAND_QUEUE_FULL
) == 0) {
372 /* We successfully posted the command packet */
373 outl(command_que_value
, TW_COMMAND_QUEUE_REG_ADDR(tw_dev
));
374 tw_dev
->state
[request_id
] = TW_S_POSTED
;
375 tw_dev
->posted_request_count
++;
376 if (tw_dev
->posted_request_count
> tw_dev
->max_posted_request_count
) {
377 tw_dev
->max_posted_request_count
= tw_dev
->posted_request_count
;
380 /* Couldn't post the command packet, so we do it in the isr */
381 if (tw_dev
->state
[request_id
] != TW_S_PENDING
) {
382 tw_dev
->state
[request_id
] = TW_S_PENDING
;
383 tw_dev
->pending_request_count
++;
384 if (tw_dev
->pending_request_count
> tw_dev
->max_pending_request_count
) {
385 tw_dev
->max_pending_request_count
= tw_dev
->pending_request_count
;
387 tw_dev
->pending_queue
[tw_dev
->pending_tail
] = request_id
;
388 if (tw_dev
->pending_tail
== TW_Q_LENGTH
-1) {
389 tw_dev
->pending_tail
= TW_Q_START
;
391 tw_dev
->pending_tail
= tw_dev
->pending_tail
+ 1;
394 TW_UNMASK_COMMAND_INTERRUPT(tw_dev
);
398 } /* End tw_post_command_packet() */
400 /* This function will return valid sense buffer information for failed cmds */
401 static int tw_decode_sense(TW_Device_Extension
*tw_dev
, int request_id
, int fill_sense
)
406 dprintk(KERN_WARNING
"3w-xxxx: tw_decode_sense()\n");
407 command
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
409 printk(KERN_WARNING
"3w-xxxx: scsi%d: Command failed: status = 0x%x, flags = 0x%x, unit #%d.\n", tw_dev
->host
->host_no
, command
->status
, command
->flags
, TW_UNIT_OUT(command
->unit__hostid
));
411 /* Attempt to return intelligent sense information */
413 if ((command
->status
== 0xc7) || (command
->status
== 0xcb)) {
414 for (i
= 0; i
< ARRAY_SIZE(tw_sense_table
); i
++) {
415 if (command
->flags
== tw_sense_table
[i
][0]) {
417 /* Valid bit and 'current errors' */
418 tw_dev
->srb
[request_id
]->sense_buffer
[0] = (0x1 << 7 | 0x70);
421 tw_dev
->srb
[request_id
]->sense_buffer
[2] = tw_sense_table
[i
][1];
423 /* Additional sense length */
424 tw_dev
->srb
[request_id
]->sense_buffer
[7] = 0xa; /* 10 bytes */
426 /* Additional sense code */
427 tw_dev
->srb
[request_id
]->sense_buffer
[12] = tw_sense_table
[i
][2];
429 /* Additional sense code qualifier */
430 tw_dev
->srb
[request_id
]->sense_buffer
[13] = tw_sense_table
[i
][3];
432 tw_dev
->srb
[request_id
]->result
= (DID_OK
<< 16) | (CHECK_CONDITION
<< 1);
433 return TW_ISR_DONT_RESULT
; /* Special case for isr to not over-write result */
438 /* If no table match, error so we get a reset */
443 } /* End tw_decode_sense() */
445 /* This function will report controller error status */
446 static int tw_check_errors(TW_Device_Extension
*tw_dev
)
448 u32 status_reg_value
;
450 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
452 if (TW_STATUS_ERRORS(status_reg_value
) || tw_check_bits(status_reg_value
)) {
453 tw_decode_bits(tw_dev
, status_reg_value
, 0);
458 } /* End tw_check_errors() */
460 /* This function will empty the response que */
461 static void tw_empty_response_que(TW_Device_Extension
*tw_dev
)
463 u32 status_reg_value
, response_que_value
;
465 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
467 while ((status_reg_value
& TW_STATUS_RESPONSE_QUEUE_EMPTY
) == 0) {
468 response_que_value
= inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev
));
469 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
471 } /* End tw_empty_response_que() */
473 /* This function will free a request_id */
474 static void tw_state_request_finish(TW_Device_Extension
*tw_dev
, int request_id
)
476 tw_dev
->free_queue
[tw_dev
->free_tail
] = request_id
;
477 tw_dev
->state
[request_id
] = TW_S_FINISHED
;
478 tw_dev
->free_tail
= (tw_dev
->free_tail
+ 1) % TW_Q_LENGTH
;
479 } /* End tw_state_request_finish() */
481 /* This function will assign an available request_id */
482 static void tw_state_request_start(TW_Device_Extension
*tw_dev
, int *request_id
)
484 *request_id
= tw_dev
->free_queue
[tw_dev
->free_head
];
485 tw_dev
->free_head
= (tw_dev
->free_head
+ 1) % TW_Q_LENGTH
;
486 tw_dev
->state
[*request_id
] = TW_S_STARTED
;
487 } /* End tw_state_request_start() */
489 /* Show some statistics about the card */
490 static ssize_t
tw_show_stats(struct device
*dev
, struct device_attribute
*attr
,
493 struct Scsi_Host
*host
= class_to_shost(dev
);
494 TW_Device_Extension
*tw_dev
= (TW_Device_Extension
*)host
->hostdata
;
495 unsigned long flags
= 0;
498 spin_lock_irqsave(tw_dev
->host
->host_lock
, flags
);
499 len
= snprintf(buf
, PAGE_SIZE
, "3w-xxxx Driver version: %s\n"
500 "Current commands posted: %4d\n"
501 "Max commands posted: %4d\n"
502 "Current pending commands: %4d\n"
503 "Max pending commands: %4d\n"
504 "Last sgl length: %4d\n"
505 "Max sgl length: %4d\n"
506 "Last sector count: %4d\n"
507 "Max sector count: %4d\n"
508 "SCSI Host Resets: %4d\n"
511 tw_dev
->posted_request_count
,
512 tw_dev
->max_posted_request_count
,
513 tw_dev
->pending_request_count
,
514 tw_dev
->max_pending_request_count
,
516 tw_dev
->max_sgl_entries
,
517 tw_dev
->sector_count
,
518 tw_dev
->max_sector_count
,
521 spin_unlock_irqrestore(tw_dev
->host
->host_lock
, flags
);
523 } /* End tw_show_stats() */
525 /* This function will set a devices queue depth */
526 static int tw_change_queue_depth(struct scsi_device
*sdev
, int queue_depth
,
529 if (reason
!= SCSI_QDEPTH_DEFAULT
)
532 if (queue_depth
> TW_Q_LENGTH
-2)
533 queue_depth
= TW_Q_LENGTH
-2;
534 scsi_adjust_queue_depth(sdev
, MSG_ORDERED_TAG
, queue_depth
);
536 } /* End tw_change_queue_depth() */
538 /* Create sysfs 'stats' entry */
539 static struct device_attribute tw_host_stats_attr
= {
544 .show
= tw_show_stats
547 /* Host attributes initializer */
548 static struct device_attribute
*tw_host_attrs
[] = {
553 /* This function will read the aen queue from the isr */
554 static int tw_aen_read_queue(TW_Device_Extension
*tw_dev
, int request_id
)
556 TW_Command
*command_packet
;
558 unsigned long command_que_value
;
559 u32 status_reg_value
;
560 unsigned long param_value
= 0;
562 dprintk(KERN_NOTICE
"3w-xxxx: tw_aen_read_queue()\n");
564 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
565 if (tw_check_bits(status_reg_value
)) {
566 dprintk(KERN_WARNING
"3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n");
567 tw_decode_bits(tw_dev
, status_reg_value
, 1);
570 if (tw_dev
->command_packet_virtual_address
[request_id
] == NULL
) {
571 printk(KERN_WARNING
"3w-xxxx: tw_aen_read_queue(): Bad command packet virtual address.\n");
574 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
575 memset(command_packet
, 0, sizeof(TW_Sector
));
576 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(2, TW_OP_GET_PARAM
);
577 command_packet
->size
= 4;
578 command_packet
->request_id
= request_id
;
579 command_packet
->status
= 0;
580 command_packet
->flags
= 0;
581 command_packet
->byte6
.parameter_count
= 1;
582 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
583 if (command_que_value
== 0) {
584 printk(KERN_WARNING
"3w-xxxx: tw_aen_read_queue(): Bad command packet physical address.\n");
587 /* Now setup the param */
588 if (tw_dev
->alignment_virtual_address
[request_id
] == NULL
) {
589 printk(KERN_WARNING
"3w-xxxx: tw_aen_read_queue(): Bad alignment virtual address.\n");
592 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
593 memset(param
, 0, sizeof(TW_Sector
));
594 param
->table_id
= 0x401; /* AEN table */
595 param
->parameter_id
= 2; /* Unit code */
596 param
->parameter_size_bytes
= 2;
597 param_value
= tw_dev
->alignment_physical_address
[request_id
];
598 if (param_value
== 0) {
599 printk(KERN_WARNING
"3w-xxxx: tw_aen_read_queue(): Bad alignment physical address.\n");
602 command_packet
->byte8
.param
.sgl
[0].address
= param_value
;
603 command_packet
->byte8
.param
.sgl
[0].length
= sizeof(TW_Sector
);
605 /* Now post the command packet */
606 if ((status_reg_value
& TW_STATUS_COMMAND_QUEUE_FULL
) == 0) {
607 dprintk(KERN_WARNING
"3w-xxxx: tw_aen_read_queue(): Post succeeded.\n");
608 tw_dev
->srb
[request_id
] = NULL
; /* Flag internal command */
609 tw_dev
->state
[request_id
] = TW_S_POSTED
;
610 outl(command_que_value
, TW_COMMAND_QUEUE_REG_ADDR(tw_dev
));
612 printk(KERN_WARNING
"3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n");
617 } /* End tw_aen_read_queue() */
619 /* This function will complete an aen request from the isr */
620 static int tw_aen_complete(TW_Device_Extension
*tw_dev
, int request_id
)
624 int error
= 0, table_max
= 0;
626 dprintk(KERN_WARNING
"3w-xxxx: tw_aen_complete()\n");
627 if (tw_dev
->alignment_virtual_address
[request_id
] == NULL
) {
628 printk(KERN_WARNING
"3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n");
631 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
632 aen
= *(unsigned short *)(param
->data
);
633 dprintk(KERN_NOTICE
"3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen
);
635 /* Print some useful info when certain aen codes come out */
637 printk(KERN_WARNING
"3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev
->host
->host_no
);
639 table_max
= ARRAY_SIZE(tw_aen_string
);
640 if ((aen
& 0x0ff) < table_max
) {
641 if ((tw_aen_string
[aen
& 0xff][strlen(tw_aen_string
[aen
& 0xff])-1]) == '#') {
642 printk(KERN_WARNING
"3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev
->host
->host_no
, tw_aen_string
[aen
& 0xff], aen
>> 8);
645 printk(KERN_WARNING
"3w-xxxx: scsi%d: AEN: %s.\n", tw_dev
->host
->host_no
, tw_aen_string
[aen
& 0xff]);
648 printk(KERN_WARNING
"3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev
->host
->host_no
, aen
);
651 if (aen
!= TW_AEN_QUEUE_EMPTY
) {
654 /* Now queue the code */
655 tw_dev
->aen_queue
[tw_dev
->aen_tail
] = aen
;
656 if (tw_dev
->aen_tail
== TW_Q_LENGTH
- 1) {
657 tw_dev
->aen_tail
= TW_Q_START
;
659 tw_dev
->aen_tail
= tw_dev
->aen_tail
+ 1;
661 if (tw_dev
->aen_head
== tw_dev
->aen_tail
) {
662 if (tw_dev
->aen_head
== TW_Q_LENGTH
- 1) {
663 tw_dev
->aen_head
= TW_Q_START
;
665 tw_dev
->aen_head
= tw_dev
->aen_head
+ 1;
669 error
= tw_aen_read_queue(tw_dev
, request_id
);
671 printk(KERN_WARNING
"3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev
->host
->host_no
);
672 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
673 tw_state_request_finish(tw_dev
, request_id
);
676 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
677 tw_state_request_finish(tw_dev
, request_id
);
681 } /* End tw_aen_complete() */
683 /* This function will drain the aen queue after a soft reset */
684 static int tw_aen_drain_queue(TW_Device_Extension
*tw_dev
)
686 TW_Command
*command_packet
;
689 unsigned long command_que_value
;
690 unsigned long param_value
;
691 TW_Response_Queue response_queue
;
693 unsigned short aen_code
;
697 int found
= 0, table_max
= 0;
699 dprintk(KERN_NOTICE
"3w-xxxx: tw_aen_drain_queue()\n");
701 if (tw_poll_status(tw_dev
, TW_STATUS_ATTENTION_INTERRUPT
| TW_STATUS_MICROCONTROLLER_READY
, 30)) {
702 dprintk(KERN_WARNING
"3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count
);
705 TW_CLEAR_ATTENTION_INTERRUPT(tw_dev
);
707 /* Empty response queue */
708 tw_empty_response_que(tw_dev
);
710 /* Initialize command packet */
711 if (tw_dev
->command_packet_virtual_address
[request_id
] == NULL
) {
712 printk(KERN_WARNING
"3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n");
715 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
716 memset(command_packet
, 0, sizeof(TW_Sector
));
717 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(2, TW_OP_GET_PARAM
);
718 command_packet
->size
= 4;
719 command_packet
->request_id
= request_id
;
720 command_packet
->status
= 0;
721 command_packet
->flags
= 0;
722 command_packet
->byte6
.parameter_count
= 1;
723 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
724 if (command_que_value
== 0) {
725 printk(KERN_WARNING
"3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n");
729 /* Now setup the param */
730 if (tw_dev
->alignment_virtual_address
[request_id
] == NULL
) {
731 printk(KERN_WARNING
"3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n");
734 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
735 memset(param
, 0, sizeof(TW_Sector
));
736 param
->table_id
= 0x401; /* AEN table */
737 param
->parameter_id
= 2; /* Unit code */
738 param
->parameter_size_bytes
= 2;
739 param_value
= tw_dev
->alignment_physical_address
[request_id
];
740 if (param_value
== 0) {
741 printk(KERN_WARNING
"3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n");
744 command_packet
->byte8
.param
.sgl
[0].address
= param_value
;
745 command_packet
->byte8
.param
.sgl
[0].length
= sizeof(TW_Sector
);
747 /* Now drain the controller's aen queue */
749 /* Post command packet */
750 outl(command_que_value
, TW_COMMAND_QUEUE_REG_ADDR(tw_dev
));
752 /* Now poll for completion */
753 if (tw_poll_status_gone(tw_dev
, TW_STATUS_RESPONSE_QUEUE_EMPTY
, 30) == 0) {
754 response_queue
.value
= inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev
));
755 request_id
= TW_RESID_OUT(response_queue
.response_id
);
757 if (request_id
!= 0) {
758 /* Unexpected request id */
759 printk(KERN_WARNING
"3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n");
763 if (command_packet
->status
!= 0) {
764 if (command_packet
->flags
!= TW_AEN_TABLE_UNDEFINED
) {
766 tw_decode_sense(tw_dev
, request_id
, 0);
769 /* We know this is a 3w-1x00, and doesn't support aen's */
774 /* Now check the aen */
775 aen
= *(unsigned short *)(param
->data
);
776 aen_code
= (aen
& 0x0ff);
779 case TW_AEN_QUEUE_EMPTY
:
780 dprintk(KERN_WARNING
"3w-xxxx: AEN: %s.\n", tw_aen_string
[aen
& 0xff]);
781 if (first_reset
!= 1) {
787 case TW_AEN_SOFT_RESET
:
788 if (first_reset
== 0) {
791 printk(KERN_WARNING
"3w-xxxx: AEN: %s.\n", tw_aen_string
[aen
& 0xff]);
798 printk(KERN_WARNING
"3w-xxxx: AEN: INFO: AEN queue overflow.\n");
800 table_max
= ARRAY_SIZE(tw_aen_string
);
801 if ((aen
& 0x0ff) < table_max
) {
802 if ((tw_aen_string
[aen
& 0xff][strlen(tw_aen_string
[aen
& 0xff])-1]) == '#') {
803 printk(KERN_WARNING
"3w-xxxx: AEN: %s%d.\n", tw_aen_string
[aen
& 0xff], aen
>> 8);
805 printk(KERN_WARNING
"3w-xxxx: AEN: %s.\n", tw_aen_string
[aen
& 0xff]);
808 printk(KERN_WARNING
"3w-xxxx: Received AEN %d.\n", aen
);
814 /* Now put the aen on the aen_queue */
816 tw_dev
->aen_queue
[tw_dev
->aen_tail
] = aen
;
817 if (tw_dev
->aen_tail
== TW_Q_LENGTH
- 1) {
818 tw_dev
->aen_tail
= TW_Q_START
;
820 tw_dev
->aen_tail
= tw_dev
->aen_tail
+ 1;
822 if (tw_dev
->aen_head
== tw_dev
->aen_tail
) {
823 if (tw_dev
->aen_head
== TW_Q_LENGTH
- 1) {
824 tw_dev
->aen_head
= TW_Q_START
;
826 tw_dev
->aen_head
= tw_dev
->aen_head
+ 1;
833 printk(KERN_WARNING
"3w-xxxx: tw_aen_drain_queue(): Response never received.\n");
836 } while (finished
== 0);
839 } /* End tw_aen_drain_queue() */
841 /* This function will allocate memory */
842 static int tw_allocate_memory(TW_Device_Extension
*tw_dev
, int size
, int which
)
845 dma_addr_t dma_handle
;
846 unsigned long *cpu_addr
= NULL
;
848 dprintk(KERN_NOTICE
"3w-xxxx: tw_allocate_memory()\n");
850 cpu_addr
= pci_alloc_consistent(tw_dev
->tw_pci_dev
, size
*TW_Q_LENGTH
, &dma_handle
);
851 if (cpu_addr
== NULL
) {
852 printk(KERN_WARNING
"3w-xxxx: pci_alloc_consistent() failed.\n");
856 if ((unsigned long)cpu_addr
% (tw_dev
->tw_pci_dev
->device
== TW_DEVICE_ID
? TW_ALIGNMENT_6000
: TW_ALIGNMENT_7000
)) {
857 printk(KERN_WARNING
"3w-xxxx: Couldn't allocate correctly aligned memory.\n");
858 pci_free_consistent(tw_dev
->tw_pci_dev
, size
*TW_Q_LENGTH
, cpu_addr
, dma_handle
);
862 memset(cpu_addr
, 0, size
*TW_Q_LENGTH
);
864 for (i
=0;i
<TW_Q_LENGTH
;i
++) {
867 tw_dev
->command_packet_physical_address
[i
] = dma_handle
+(i
*size
);
868 tw_dev
->command_packet_virtual_address
[i
] = (unsigned long *)((unsigned char *)cpu_addr
+ (i
*size
));
871 tw_dev
->alignment_physical_address
[i
] = dma_handle
+(i
*size
);
872 tw_dev
->alignment_virtual_address
[i
] = (unsigned long *)((unsigned char *)cpu_addr
+ (i
*size
));
875 printk(KERN_WARNING
"3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n");
881 } /* End tw_allocate_memory() */
883 /* This function handles ioctl for the character device */
884 static int tw_chrdev_ioctl(struct inode
*inode
, struct file
*file
, unsigned int cmd
, unsigned long arg
)
887 dma_addr_t dma_handle
;
888 unsigned short tw_aen_code
;
890 unsigned int data_buffer_length
= 0;
891 unsigned long data_buffer_length_adjusted
= 0;
892 unsigned long *cpu_addr
;
894 TW_New_Ioctl
*tw_ioctl
;
895 TW_Passthru
*passthru
;
896 TW_Device_Extension
*tw_dev
= tw_device_extension_list
[iminor(inode
)];
897 int retval
= -EFAULT
;
898 void __user
*argp
= (void __user
*)arg
;
900 dprintk(KERN_WARNING
"3w-xxxx: tw_chrdev_ioctl()\n");
902 /* Only let one of these through at a time */
903 if (mutex_lock_interruptible(&tw_dev
->ioctl_lock
))
906 /* First copy down the buffer length */
907 if (copy_from_user(&data_buffer_length
, argp
, sizeof(unsigned int)))
911 if (data_buffer_length
> TW_MAX_IOCTL_SECTORS
* 512) {
916 /* Hardware can only do multiple of 512 byte transfers */
917 data_buffer_length_adjusted
= (data_buffer_length
+ 511) & ~511;
919 /* Now allocate ioctl buf memory */
920 cpu_addr
= dma_alloc_coherent(&tw_dev
->tw_pci_dev
->dev
, data_buffer_length_adjusted
+sizeof(TW_New_Ioctl
) - 1, &dma_handle
, GFP_KERNEL
);
921 if (cpu_addr
== NULL
) {
926 tw_ioctl
= (TW_New_Ioctl
*)cpu_addr
;
928 /* Now copy down the entire ioctl */
929 if (copy_from_user(tw_ioctl
, argp
, data_buffer_length
+ sizeof(TW_New_Ioctl
) - 1))
932 passthru
= (TW_Passthru
*)&tw_ioctl
->firmware_command
;
934 /* See which ioctl we are doing */
937 dprintk(KERN_WARNING
"3w-xxxx: tw_chrdev_ioctl(): caught TW_OP_NOP.\n");
939 case TW_OP_AEN_LISTEN
:
940 dprintk(KERN_WARNING
"3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n");
941 memset(tw_ioctl
->data_buffer
, 0, data_buffer_length
);
943 spin_lock_irqsave(tw_dev
->host
->host_lock
, flags
);
944 if (tw_dev
->aen_head
== tw_dev
->aen_tail
) {
945 tw_aen_code
= TW_AEN_QUEUE_EMPTY
;
947 tw_aen_code
= tw_dev
->aen_queue
[tw_dev
->aen_head
];
948 if (tw_dev
->aen_head
== TW_Q_LENGTH
- 1) {
949 tw_dev
->aen_head
= TW_Q_START
;
951 tw_dev
->aen_head
= tw_dev
->aen_head
+ 1;
954 spin_unlock_irqrestore(tw_dev
->host
->host_lock
, flags
);
955 memcpy(tw_ioctl
->data_buffer
, &tw_aen_code
, sizeof(tw_aen_code
));
957 case TW_CMD_PACKET_WITH_DATA
:
958 dprintk(KERN_WARNING
"3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n");
959 spin_lock_irqsave(tw_dev
->host
->host_lock
, flags
);
961 tw_state_request_start(tw_dev
, &request_id
);
963 /* Flag internal command */
964 tw_dev
->srb
[request_id
] = NULL
;
966 /* Flag chrdev ioctl */
967 tw_dev
->chrdev_request_id
= request_id
;
969 tw_ioctl
->firmware_command
.request_id
= request_id
;
971 /* Load the sg list */
972 switch (TW_SGL_OUT(tw_ioctl
->firmware_command
.opcode__sgloffset
)) {
974 tw_ioctl
->firmware_command
.byte8
.param
.sgl
[0].address
= dma_handle
+ sizeof(TW_New_Ioctl
) - 1;
975 tw_ioctl
->firmware_command
.byte8
.param
.sgl
[0].length
= data_buffer_length_adjusted
;
978 tw_ioctl
->firmware_command
.byte8
.io
.sgl
[0].address
= dma_handle
+ sizeof(TW_New_Ioctl
) - 1;
979 tw_ioctl
->firmware_command
.byte8
.io
.sgl
[0].length
= data_buffer_length_adjusted
;
982 passthru
->sg_list
[0].address
= dma_handle
+ sizeof(TW_New_Ioctl
) - 1;
983 passthru
->sg_list
[0].length
= data_buffer_length_adjusted
;
987 memcpy(tw_dev
->command_packet_virtual_address
[request_id
], &(tw_ioctl
->firmware_command
), sizeof(TW_Command
));
989 /* Now post the command packet to the controller */
990 tw_post_command_packet(tw_dev
, request_id
);
991 spin_unlock_irqrestore(tw_dev
->host
->host_lock
, flags
);
993 timeout
= TW_IOCTL_CHRDEV_TIMEOUT
*HZ
;
995 /* Now wait for the command to complete */
996 timeout
= wait_event_timeout(tw_dev
->ioctl_wqueue
, tw_dev
->chrdev_request_id
== TW_IOCTL_CHRDEV_FREE
, timeout
);
998 /* We timed out, and didn't get an interrupt */
999 if (tw_dev
->chrdev_request_id
!= TW_IOCTL_CHRDEV_FREE
) {
1000 /* Now we need to reset the board */
1001 printk(KERN_WARNING
"3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev
->host
->host_no
, cmd
);
1003 if (tw_reset_device_extension(tw_dev
)) {
1004 printk(KERN_WARNING
"3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n", tw_dev
->host
->host_no
);
1009 /* Now copy in the command packet response */
1010 memcpy(&(tw_ioctl
->firmware_command
), tw_dev
->command_packet_virtual_address
[request_id
], sizeof(TW_Command
));
1012 /* Now complete the io */
1013 spin_lock_irqsave(tw_dev
->host
->host_lock
, flags
);
1014 tw_dev
->posted_request_count
--;
1015 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
1016 tw_state_request_finish(tw_dev
, request_id
);
1017 spin_unlock_irqrestore(tw_dev
->host
->host_lock
, flags
);
1024 /* Now copy the response to userspace */
1025 if (copy_to_user(argp
, tw_ioctl
, sizeof(TW_New_Ioctl
) + data_buffer_length
- 1))
1029 /* Now free ioctl buf memory */
1030 dma_free_coherent(&tw_dev
->tw_pci_dev
->dev
, data_buffer_length_adjusted
+sizeof(TW_New_Ioctl
) - 1, cpu_addr
, dma_handle
);
1032 mutex_unlock(&tw_dev
->ioctl_lock
);
1034 } /* End tw_chrdev_ioctl() */
1036 /* This function handles open for the character device */
1037 /* NOTE that this function races with remove. */
1038 static int tw_chrdev_open(struct inode
*inode
, struct file
*file
)
1040 unsigned int minor_number
;
1042 cycle_kernel_lock();
1043 dprintk(KERN_WARNING
"3w-xxxx: tw_ioctl_open()\n");
1045 minor_number
= iminor(inode
);
1046 if (minor_number
>= tw_device_extension_count
)
1050 } /* End tw_chrdev_open() */
1052 /* File operations struct for character device */
1053 static const struct file_operations tw_fops
= {
1054 .owner
= THIS_MODULE
,
1055 .ioctl
= tw_chrdev_ioctl
,
1056 .open
= tw_chrdev_open
,
1060 /* This function will free up device extension resources */
1061 static void tw_free_device_extension(TW_Device_Extension
*tw_dev
)
1063 dprintk(KERN_NOTICE
"3w-xxxx: tw_free_device_extension()\n");
1065 /* Free command packet and generic buffer memory */
1066 if (tw_dev
->command_packet_virtual_address
[0])
1067 pci_free_consistent(tw_dev
->tw_pci_dev
, sizeof(TW_Command
)*TW_Q_LENGTH
, tw_dev
->command_packet_virtual_address
[0], tw_dev
->command_packet_physical_address
[0]);
1069 if (tw_dev
->alignment_virtual_address
[0])
1070 pci_free_consistent(tw_dev
->tw_pci_dev
, sizeof(TW_Sector
)*TW_Q_LENGTH
, tw_dev
->alignment_virtual_address
[0], tw_dev
->alignment_physical_address
[0]);
1071 } /* End tw_free_device_extension() */
1073 /* This function will send an initconnection command to controller */
1074 static int tw_initconnection(TW_Device_Extension
*tw_dev
, int message_credits
)
1076 unsigned long command_que_value
;
1077 TW_Command
*command_packet
;
1078 TW_Response_Queue response_queue
;
1081 dprintk(KERN_NOTICE
"3w-xxxx: tw_initconnection()\n");
1083 /* Initialize InitConnection command packet */
1084 if (tw_dev
->command_packet_virtual_address
[request_id
] == NULL
) {
1085 printk(KERN_WARNING
"3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n");
1089 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
1090 memset(command_packet
, 0, sizeof(TW_Sector
));
1091 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION
);
1092 command_packet
->size
= TW_INIT_COMMAND_PACKET_SIZE
;
1093 command_packet
->request_id
= request_id
;
1094 command_packet
->status
= 0x0;
1095 command_packet
->flags
= 0x0;
1096 command_packet
->byte6
.message_credits
= message_credits
;
1097 command_packet
->byte8
.init_connection
.response_queue_pointer
= 0x0;
1098 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
1100 if (command_que_value
== 0) {
1101 printk(KERN_WARNING
"3w-xxxx: tw_initconnection(): Bad command packet physical address.\n");
1105 /* Send command packet to the board */
1106 outl(command_que_value
, TW_COMMAND_QUEUE_REG_ADDR(tw_dev
));
1108 /* Poll for completion */
1109 if (tw_poll_status_gone(tw_dev
, TW_STATUS_RESPONSE_QUEUE_EMPTY
, 30) == 0) {
1110 response_queue
.value
= inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev
));
1111 request_id
= TW_RESID_OUT(response_queue
.response_id
);
1113 if (request_id
!= 0) {
1114 /* unexpected request id */
1115 printk(KERN_WARNING
"3w-xxxx: tw_initconnection(): Unexpected request id.\n");
1118 if (command_packet
->status
!= 0) {
1120 tw_decode_sense(tw_dev
, request_id
, 0);
1125 } /* End tw_initconnection() */
1127 /* Set a value in the features table */
1128 static int tw_setfeature(TW_Device_Extension
*tw_dev
, int parm
, int param_size
,
1132 TW_Command
*command_packet
;
1133 TW_Response_Queue response_queue
;
1135 unsigned long command_que_value
;
1136 unsigned long param_value
;
1138 /* Initialize SetParam command packet */
1139 if (tw_dev
->command_packet_virtual_address
[request_id
] == NULL
) {
1140 printk(KERN_WARNING
"3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n");
1143 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
1144 memset(command_packet
, 0, sizeof(TW_Sector
));
1145 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1147 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(2, TW_OP_SET_PARAM
);
1148 param
->table_id
= 0x404; /* Features table */
1149 param
->parameter_id
= parm
;
1150 param
->parameter_size_bytes
= param_size
;
1151 memcpy(param
->data
, val
, param_size
);
1153 param_value
= tw_dev
->alignment_physical_address
[request_id
];
1154 if (param_value
== 0) {
1155 printk(KERN_WARNING
"3w-xxxx: tw_setfeature(): Bad alignment physical address.\n");
1156 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
1157 tw_state_request_finish(tw_dev
, request_id
);
1158 tw_dev
->srb
[request_id
]->result
= (DID_OK
<< 16);
1159 tw_dev
->srb
[request_id
]->scsi_done(tw_dev
->srb
[request_id
]);
1161 command_packet
->byte8
.param
.sgl
[0].address
= param_value
;
1162 command_packet
->byte8
.param
.sgl
[0].length
= sizeof(TW_Sector
);
1164 command_packet
->size
= 4;
1165 command_packet
->request_id
= request_id
;
1166 command_packet
->byte6
.parameter_count
= 1;
1168 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
1169 if (command_que_value
== 0) {
1170 printk(KERN_WARNING
"3w-xxxx: tw_setfeature(): Bad command packet physical address.\n");
1174 /* Send command packet to the board */
1175 outl(command_que_value
, TW_COMMAND_QUEUE_REG_ADDR(tw_dev
));
1177 /* Poll for completion */
1178 if (tw_poll_status_gone(tw_dev
, TW_STATUS_RESPONSE_QUEUE_EMPTY
, 30) == 0) {
1179 response_queue
.value
= inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev
));
1180 request_id
= TW_RESID_OUT(response_queue
.response_id
);
1182 if (request_id
!= 0) {
1183 /* unexpected request id */
1184 printk(KERN_WARNING
"3w-xxxx: tw_setfeature(): Unexpected request id.\n");
1187 if (command_packet
->status
!= 0) {
1189 tw_decode_sense(tw_dev
, request_id
, 0);
1195 } /* End tw_setfeature() */
1197 /* This function will reset a controller */
1198 static int tw_reset_sequence(TW_Device_Extension
*tw_dev
)
1202 unsigned char c
= 1;
1204 /* Reset the board */
1205 while (tries
< TW_MAX_RESET_TRIES
) {
1206 TW_SOFT_RESET(tw_dev
);
1208 error
= tw_aen_drain_queue(tw_dev
);
1210 printk(KERN_WARNING
"3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev
->host
->host_no
);
1215 /* Check for controller errors */
1216 if (tw_check_errors(tw_dev
)) {
1217 printk(KERN_WARNING
"3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev
->host
->host_no
);
1222 /* Now the controller is in a good state */
1226 if (tries
>= TW_MAX_RESET_TRIES
) {
1227 printk(KERN_WARNING
"3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev
->host
->host_no
);
1231 error
= tw_initconnection(tw_dev
, TW_INIT_MESSAGE_CREDITS
);
1233 printk(KERN_WARNING
"3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev
->host
->host_no
);
1237 error
= tw_setfeature(tw_dev
, 2, 1, &c
);
1239 printk(KERN_WARNING
"3w-xxxx: Unable to set features for card, probable old firmware or card.\n");
1243 } /* End tw_reset_sequence() */
1245 /* This function will initialize the fields of a device extension */
1246 static int tw_initialize_device_extension(TW_Device_Extension
*tw_dev
)
1250 dprintk(KERN_NOTICE
"3w-xxxx: tw_initialize_device_extension()\n");
1252 /* Initialize command packet buffers */
1253 error
= tw_allocate_memory(tw_dev
, sizeof(TW_Command
), 0);
1255 printk(KERN_WARNING
"3w-xxxx: Command packet memory allocation failed.\n");
1259 /* Initialize generic buffer */
1260 error
= tw_allocate_memory(tw_dev
, sizeof(TW_Sector
), 1);
1262 printk(KERN_WARNING
"3w-xxxx: Generic memory allocation failed.\n");
1266 for (i
=0;i
<TW_Q_LENGTH
;i
++) {
1267 tw_dev
->free_queue
[i
] = i
;
1268 tw_dev
->state
[i
] = TW_S_INITIAL
;
1271 tw_dev
->pending_head
= TW_Q_START
;
1272 tw_dev
->pending_tail
= TW_Q_START
;
1273 tw_dev
->chrdev_request_id
= TW_IOCTL_CHRDEV_FREE
;
1275 mutex_init(&tw_dev
->ioctl_lock
);
1276 init_waitqueue_head(&tw_dev
->ioctl_wqueue
);
1279 } /* End tw_initialize_device_extension() */
1281 static int tw_map_scsi_sg_data(struct pci_dev
*pdev
, struct scsi_cmnd
*cmd
)
1285 dprintk(KERN_WARNING
"3w-xxxx: tw_map_scsi_sg_data()\n");
1287 use_sg
= scsi_dma_map(cmd
);
1289 printk(KERN_WARNING
"3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n");
1293 cmd
->SCp
.phase
= TW_PHASE_SGLIST
;
1294 cmd
->SCp
.have_data_in
= use_sg
;
1297 } /* End tw_map_scsi_sg_data() */
1299 static void tw_unmap_scsi_data(struct pci_dev
*pdev
, struct scsi_cmnd
*cmd
)
1301 dprintk(KERN_WARNING
"3w-xxxx: tw_unmap_scsi_data()\n");
1303 if (cmd
->SCp
.phase
== TW_PHASE_SGLIST
)
1304 scsi_dma_unmap(cmd
);
1305 } /* End tw_unmap_scsi_data() */
1307 /* This function will reset a device extension */
1308 static int tw_reset_device_extension(TW_Device_Extension
*tw_dev
)
1311 struct scsi_cmnd
*srb
;
1312 unsigned long flags
= 0;
1314 dprintk(KERN_NOTICE
"3w-xxxx: tw_reset_device_extension()\n");
1316 set_bit(TW_IN_RESET
, &tw_dev
->flags
);
1317 TW_DISABLE_INTERRUPTS(tw_dev
);
1318 TW_MASK_COMMAND_INTERRUPT(tw_dev
);
1319 spin_lock_irqsave(tw_dev
->host
->host_lock
, flags
);
1321 /* Abort all requests that are in progress */
1322 for (i
=0;i
<TW_Q_LENGTH
;i
++) {
1323 if ((tw_dev
->state
[i
] != TW_S_FINISHED
) &&
1324 (tw_dev
->state
[i
] != TW_S_INITIAL
) &&
1325 (tw_dev
->state
[i
] != TW_S_COMPLETED
)) {
1326 srb
= tw_dev
->srb
[i
];
1328 srb
->result
= (DID_RESET
<< 16);
1329 tw_dev
->srb
[i
]->scsi_done(tw_dev
->srb
[i
]);
1330 tw_unmap_scsi_data(tw_dev
->tw_pci_dev
, tw_dev
->srb
[i
]);
1335 /* Reset queues and counts */
1336 for (i
=0;i
<TW_Q_LENGTH
;i
++) {
1337 tw_dev
->free_queue
[i
] = i
;
1338 tw_dev
->state
[i
] = TW_S_INITIAL
;
1340 tw_dev
->free_head
= TW_Q_START
;
1341 tw_dev
->free_tail
= TW_Q_START
;
1342 tw_dev
->posted_request_count
= 0;
1343 tw_dev
->pending_request_count
= 0;
1344 tw_dev
->pending_head
= TW_Q_START
;
1345 tw_dev
->pending_tail
= TW_Q_START
;
1346 tw_dev
->reset_print
= 0;
1348 spin_unlock_irqrestore(tw_dev
->host
->host_lock
, flags
);
1350 if (tw_reset_sequence(tw_dev
)) {
1351 printk(KERN_WARNING
"3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev
->host
->host_no
);
1355 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev
);
1356 clear_bit(TW_IN_RESET
, &tw_dev
->flags
);
1357 tw_dev
->chrdev_request_id
= TW_IOCTL_CHRDEV_FREE
;
1360 } /* End tw_reset_device_extension() */
1362 /* This funciton returns unit geometry in cylinders/heads/sectors */
1363 static int tw_scsi_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
1364 sector_t capacity
, int geom
[])
1366 int heads
, sectors
, cylinders
;
1367 TW_Device_Extension
*tw_dev
;
1369 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_biosparam()\n");
1370 tw_dev
= (TW_Device_Extension
*)sdev
->host
->hostdata
;
1374 cylinders
= sector_div(capacity
, heads
* sectors
);
1376 if (capacity
>= 0x200000) {
1379 cylinders
= sector_div(capacity
, heads
* sectors
);
1382 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads
, sectors
, cylinders
);
1385 geom
[2] = cylinders
;
1388 } /* End tw_scsi_biosparam() */
1390 /* This is the new scsi eh reset function */
1391 static int tw_scsi_eh_reset(struct scsi_cmnd
*SCpnt
)
1393 TW_Device_Extension
*tw_dev
=NULL
;
1394 int retval
= FAILED
;
1396 tw_dev
= (TW_Device_Extension
*)SCpnt
->device
->host
->hostdata
;
1398 tw_dev
->num_resets
++;
1400 sdev_printk(KERN_WARNING
, SCpnt
->device
,
1401 "WARNING: Command (0x%x) timed out, resetting card.\n",
1404 /* Make sure we are not issuing an ioctl or resetting from ioctl */
1405 mutex_lock(&tw_dev
->ioctl_lock
);
1407 /* Now reset the card and some of the device extension data */
1408 if (tw_reset_device_extension(tw_dev
)) {
1409 printk(KERN_WARNING
"3w-xxxx: scsi%d: Reset failed.\n", tw_dev
->host
->host_no
);
1415 mutex_unlock(&tw_dev
->ioctl_lock
);
1417 } /* End tw_scsi_eh_reset() */
1419 /* This function handles scsi inquiry commands */
1420 static int tw_scsiop_inquiry(TW_Device_Extension
*tw_dev
, int request_id
)
1423 TW_Command
*command_packet
;
1424 unsigned long command_que_value
;
1425 unsigned long param_value
;
1427 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_inquiry()\n");
1429 /* Initialize command packet */
1430 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
1431 if (command_packet
== NULL
) {
1432 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n");
1435 memset(command_packet
, 0, sizeof(TW_Sector
));
1436 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(2, TW_OP_GET_PARAM
);
1437 command_packet
->size
= 4;
1438 command_packet
->request_id
= request_id
;
1439 command_packet
->status
= 0;
1440 command_packet
->flags
= 0;
1441 command_packet
->byte6
.parameter_count
= 1;
1443 /* Now setup the param */
1444 if (tw_dev
->alignment_virtual_address
[request_id
] == NULL
) {
1445 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n");
1448 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1449 memset(param
, 0, sizeof(TW_Sector
));
1450 param
->table_id
= 3; /* unit summary table */
1451 param
->parameter_id
= 3; /* unitsstatus parameter */
1452 param
->parameter_size_bytes
= TW_MAX_UNITS
;
1453 param_value
= tw_dev
->alignment_physical_address
[request_id
];
1454 if (param_value
== 0) {
1455 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n");
1459 command_packet
->byte8
.param
.sgl
[0].address
= param_value
;
1460 command_packet
->byte8
.param
.sgl
[0].length
= sizeof(TW_Sector
);
1461 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
1462 if (command_que_value
== 0) {
1463 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n");
1467 /* Now try to post the command packet */
1468 tw_post_command_packet(tw_dev
, request_id
);
1471 } /* End tw_scsiop_inquiry() */
1473 static void tw_transfer_internal(TW_Device_Extension
*tw_dev
, int request_id
,
1474 void *data
, unsigned int len
)
1476 scsi_sg_copy_from_buffer(tw_dev
->srb
[request_id
], data
, len
);
1479 /* This function is called by the isr to complete an inquiry command */
1480 static int tw_scsiop_inquiry_complete(TW_Device_Extension
*tw_dev
, int request_id
)
1482 unsigned char *is_unit_present
;
1483 unsigned char request_buffer
[36];
1486 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_inquiry_complete()\n");
1488 memset(request_buffer
, 0, sizeof(request_buffer
));
1489 request_buffer
[0] = TYPE_DISK
; /* Peripheral device type */
1490 request_buffer
[1] = 0; /* Device type modifier */
1491 request_buffer
[2] = 0; /* No ansi/iso compliance */
1492 request_buffer
[4] = 31; /* Additional length */
1493 memcpy(&request_buffer
[8], "3ware ", 8); /* Vendor ID */
1494 sprintf(&request_buffer
[16], "Logical Disk %-2d ", tw_dev
->srb
[request_id
]->device
->id
);
1495 memcpy(&request_buffer
[32], TW_DRIVER_VERSION
, 3);
1496 tw_transfer_internal(tw_dev
, request_id
, request_buffer
,
1497 sizeof(request_buffer
));
1499 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1500 if (param
== NULL
) {
1501 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n");
1504 is_unit_present
= &(param
->data
[0]);
1506 if (is_unit_present
[tw_dev
->srb
[request_id
]->device
->id
] & TW_UNIT_ONLINE
) {
1507 tw_dev
->is_unit_present
[tw_dev
->srb
[request_id
]->device
->id
] = 1;
1509 tw_dev
->is_unit_present
[tw_dev
->srb
[request_id
]->device
->id
] = 0;
1510 tw_dev
->srb
[request_id
]->result
= (DID_BAD_TARGET
<< 16);
1511 return TW_ISR_DONT_RESULT
;
1515 } /* End tw_scsiop_inquiry_complete() */
1517 /* This function handles scsi mode_sense commands */
1518 static int tw_scsiop_mode_sense(TW_Device_Extension
*tw_dev
, int request_id
)
1521 TW_Command
*command_packet
;
1522 unsigned long command_que_value
;
1523 unsigned long param_value
;
1525 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_mode_sense()\n");
1527 /* Only page control = 0, page code = 0x8 (cache page) supported */
1528 if (tw_dev
->srb
[request_id
]->cmnd
[2] != 0x8) {
1529 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
1530 tw_state_request_finish(tw_dev
, request_id
);
1531 tw_dev
->srb
[request_id
]->result
= (DID_OK
<< 16);
1532 tw_dev
->srb
[request_id
]->scsi_done(tw_dev
->srb
[request_id
]);
1536 /* Now read firmware cache setting for this unit */
1537 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
1538 if (command_packet
== NULL
) {
1539 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n");
1543 /* Setup the command packet */
1544 memset(command_packet
, 0, sizeof(TW_Sector
));
1545 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(2, TW_OP_GET_PARAM
);
1546 command_packet
->size
= 4;
1547 command_packet
->request_id
= request_id
;
1548 command_packet
->status
= 0;
1549 command_packet
->flags
= 0;
1550 command_packet
->byte6
.parameter_count
= 1;
1552 /* Setup the param */
1553 if (tw_dev
->alignment_virtual_address
[request_id
] == NULL
) {
1554 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n");
1558 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1559 memset(param
, 0, sizeof(TW_Sector
));
1560 param
->table_id
= TW_UNIT_INFORMATION_TABLE_BASE
+ tw_dev
->srb
[request_id
]->device
->id
;
1561 param
->parameter_id
= 7; /* unit flags */
1562 param
->parameter_size_bytes
= 1;
1563 param_value
= tw_dev
->alignment_physical_address
[request_id
];
1564 if (param_value
== 0) {
1565 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n");
1569 command_packet
->byte8
.param
.sgl
[0].address
= param_value
;
1570 command_packet
->byte8
.param
.sgl
[0].length
= sizeof(TW_Sector
);
1571 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
1572 if (command_que_value
== 0) {
1573 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n");
1577 /* Now try to post the command packet */
1578 tw_post_command_packet(tw_dev
, request_id
);
1581 } /* End tw_scsiop_mode_sense() */
1583 /* This function is called by the isr to complete a mode sense command */
1584 static int tw_scsiop_mode_sense_complete(TW_Device_Extension
*tw_dev
, int request_id
)
1587 unsigned char *flags
;
1588 unsigned char request_buffer
[8];
1590 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_mode_sense_complete()\n");
1592 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1593 if (param
== NULL
) {
1594 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n");
1597 flags
= (char *)&(param
->data
[0]);
1598 memset(request_buffer
, 0, sizeof(request_buffer
));
1600 request_buffer
[0] = 0xf; /* mode data length */
1601 request_buffer
[1] = 0; /* default medium type */
1602 request_buffer
[2] = 0x10; /* dpo/fua support on */
1603 request_buffer
[3] = 0; /* no block descriptors */
1604 request_buffer
[4] = 0x8; /* caching page */
1605 request_buffer
[5] = 0xa; /* page length */
1607 request_buffer
[6] = 0x5; /* WCE on, RCD on */
1609 request_buffer
[6] = 0x1; /* WCE off, RCD on */
1610 tw_transfer_internal(tw_dev
, request_id
, request_buffer
,
1611 sizeof(request_buffer
));
1614 } /* End tw_scsiop_mode_sense_complete() */
1616 /* This function handles scsi read_capacity commands */
1617 static int tw_scsiop_read_capacity(TW_Device_Extension
*tw_dev
, int request_id
)
1620 TW_Command
*command_packet
;
1621 unsigned long command_que_value
;
1622 unsigned long param_value
;
1624 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_capacity()\n");
1626 /* Initialize command packet */
1627 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
1629 if (command_packet
== NULL
) {
1630 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n");
1633 memset(command_packet
, 0, sizeof(TW_Sector
));
1634 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(2, TW_OP_GET_PARAM
);
1635 command_packet
->size
= 4;
1636 command_packet
->request_id
= request_id
;
1637 command_packet
->unit__hostid
= TW_UNITHOST_IN(0, tw_dev
->srb
[request_id
]->device
->id
);
1638 command_packet
->status
= 0;
1639 command_packet
->flags
= 0;
1640 command_packet
->byte6
.block_count
= 1;
1642 /* Now setup the param */
1643 if (tw_dev
->alignment_virtual_address
[request_id
] == NULL
) {
1644 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n");
1647 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1648 memset(param
, 0, sizeof(TW_Sector
));
1649 param
->table_id
= TW_UNIT_INFORMATION_TABLE_BASE
+
1650 tw_dev
->srb
[request_id
]->device
->id
;
1651 param
->parameter_id
= 4; /* unitcapacity parameter */
1652 param
->parameter_size_bytes
= 4;
1653 param_value
= tw_dev
->alignment_physical_address
[request_id
];
1654 if (param_value
== 0) {
1655 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n");
1659 command_packet
->byte8
.param
.sgl
[0].address
= param_value
;
1660 command_packet
->byte8
.param
.sgl
[0].length
= sizeof(TW_Sector
);
1661 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
1662 if (command_que_value
== 0) {
1663 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n");
1667 /* Now try to post the command to the board */
1668 tw_post_command_packet(tw_dev
, request_id
);
1671 } /* End tw_scsiop_read_capacity() */
1673 /* This function is called by the isr to complete a readcapacity command */
1674 static int tw_scsiop_read_capacity_complete(TW_Device_Extension
*tw_dev
, int request_id
)
1676 unsigned char *param_data
;
1681 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_capacity_complete()\n");
1683 memset(buff
, 0, sizeof(buff
));
1684 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1685 if (param
== NULL
) {
1686 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n");
1689 param_data
= &(param
->data
[0]);
1691 capacity
= (param_data
[3] << 24) | (param_data
[2] << 16) |
1692 (param_data
[1] << 8) | param_data
[0];
1694 /* Subtract one sector to fix get last sector ioctl */
1697 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity
);
1699 /* Number of LBA's */
1700 buff
[0] = (capacity
>> 24);
1701 buff
[1] = (capacity
>> 16) & 0xff;
1702 buff
[2] = (capacity
>> 8) & 0xff;
1703 buff
[3] = capacity
& 0xff;
1705 /* Block size in bytes (512) */
1706 buff
[4] = (TW_BLOCK_SIZE
>> 24);
1707 buff
[5] = (TW_BLOCK_SIZE
>> 16) & 0xff;
1708 buff
[6] = (TW_BLOCK_SIZE
>> 8) & 0xff;
1709 buff
[7] = TW_BLOCK_SIZE
& 0xff;
1711 tw_transfer_internal(tw_dev
, request_id
, buff
, sizeof(buff
));
1714 } /* End tw_scsiop_read_capacity_complete() */
1716 /* This function handles scsi read or write commands */
1717 static int tw_scsiop_read_write(TW_Device_Extension
*tw_dev
, int request_id
)
1719 TW_Command
*command_packet
;
1720 unsigned long command_que_value
;
1721 u32 lba
= 0x0, num_sectors
= 0x0;
1723 struct scsi_cmnd
*srb
;
1724 struct scatterlist
*sglist
, *sg
;
1726 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_write()\n");
1728 srb
= tw_dev
->srb
[request_id
];
1730 sglist
= scsi_sglist(srb
);
1732 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n");
1736 /* Initialize command packet */
1737 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
1738 if (command_packet
== NULL
) {
1739 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n");
1743 if (srb
->cmnd
[0] == READ_6
|| srb
->cmnd
[0] == READ_10
) {
1744 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(3, TW_OP_READ
);
1746 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(3, TW_OP_WRITE
);
1749 command_packet
->size
= 3;
1750 command_packet
->request_id
= request_id
;
1751 command_packet
->unit__hostid
= TW_UNITHOST_IN(0, srb
->device
->id
);
1752 command_packet
->status
= 0;
1753 command_packet
->flags
= 0;
1755 if (srb
->cmnd
[0] == WRITE_10
) {
1756 if ((srb
->cmnd
[1] & 0x8) || (srb
->cmnd
[1] & 0x10))
1757 command_packet
->flags
= 1;
1760 if (srb
->cmnd
[0] == READ_6
|| srb
->cmnd
[0] == WRITE_6
) {
1761 lba
= ((u32
)srb
->cmnd
[1] << 16) | ((u32
)srb
->cmnd
[2] << 8) | (u32
)srb
->cmnd
[3];
1762 num_sectors
= (u32
)srb
->cmnd
[4];
1764 lba
= ((u32
)srb
->cmnd
[2] << 24) | ((u32
)srb
->cmnd
[3] << 16) | ((u32
)srb
->cmnd
[4] << 8) | (u32
)srb
->cmnd
[5];
1765 num_sectors
= (u32
)srb
->cmnd
[8] | ((u32
)srb
->cmnd
[7] << 8);
1768 /* Update sector statistic */
1769 tw_dev
->sector_count
= num_sectors
;
1770 if (tw_dev
->sector_count
> tw_dev
->max_sector_count
)
1771 tw_dev
->max_sector_count
= tw_dev
->sector_count
;
1773 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba
, num_sectors
);
1774 command_packet
->byte8
.io
.lba
= lba
;
1775 command_packet
->byte6
.block_count
= num_sectors
;
1777 use_sg
= tw_map_scsi_sg_data(tw_dev
->tw_pci_dev
, tw_dev
->srb
[request_id
]);
1781 scsi_for_each_sg(tw_dev
->srb
[request_id
], sg
, use_sg
, i
) {
1782 command_packet
->byte8
.io
.sgl
[i
].address
= sg_dma_address(sg
);
1783 command_packet
->byte8
.io
.sgl
[i
].length
= sg_dma_len(sg
);
1784 command_packet
->size
+=2;
1787 /* Update SG statistics */
1788 tw_dev
->sgl_entries
= scsi_sg_count(tw_dev
->srb
[request_id
]);
1789 if (tw_dev
->sgl_entries
> tw_dev
->max_sgl_entries
)
1790 tw_dev
->max_sgl_entries
= tw_dev
->sgl_entries
;
1792 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
1793 if (command_que_value
== 0) {
1794 dprintk(KERN_WARNING
"3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n");
1798 /* Now try to post the command to the board */
1799 tw_post_command_packet(tw_dev
, request_id
);
1802 } /* End tw_scsiop_read_write() */
1804 /* This function will handle the request sense scsi command */
1805 static int tw_scsiop_request_sense(TW_Device_Extension
*tw_dev
, int request_id
)
1807 char request_buffer
[18];
1809 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_request_sense()\n");
1811 memset(request_buffer
, 0, sizeof(request_buffer
));
1812 request_buffer
[0] = 0x70; /* Immediate fixed format */
1813 request_buffer
[7] = 10; /* minimum size per SPC: 18 bytes */
1814 /* leave all other fields zero, giving effectively NO_SENSE return */
1815 tw_transfer_internal(tw_dev
, request_id
, request_buffer
,
1816 sizeof(request_buffer
));
1818 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
1819 tw_state_request_finish(tw_dev
, request_id
);
1821 /* If we got a request_sense, we probably want a reset, return error */
1822 tw_dev
->srb
[request_id
]->result
= (DID_ERROR
<< 16);
1823 tw_dev
->srb
[request_id
]->scsi_done(tw_dev
->srb
[request_id
]);
1826 } /* End tw_scsiop_request_sense() */
1828 /* This function will handle synchronize cache scsi command */
1829 static int tw_scsiop_synchronize_cache(TW_Device_Extension
*tw_dev
, int request_id
)
1831 TW_Command
*command_packet
;
1832 unsigned long command_que_value
;
1834 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_synchronize_cache()\n");
1836 /* Send firmware flush command for this unit */
1837 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
1838 if (command_packet
== NULL
) {
1839 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n");
1843 /* Setup the command packet */
1844 memset(command_packet
, 0, sizeof(TW_Sector
));
1845 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE
);
1846 command_packet
->size
= 2;
1847 command_packet
->request_id
= request_id
;
1848 command_packet
->unit__hostid
= TW_UNITHOST_IN(0, tw_dev
->srb
[request_id
]->device
->id
);
1849 command_packet
->status
= 0;
1850 command_packet
->flags
= 0;
1851 command_packet
->byte6
.parameter_count
= 1;
1852 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
1853 if (command_que_value
== 0) {
1854 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n");
1858 /* Now try to post the command packet */
1859 tw_post_command_packet(tw_dev
, request_id
);
1862 } /* End tw_scsiop_synchronize_cache() */
1864 /* This function will handle test unit ready scsi command */
1865 static int tw_scsiop_test_unit_ready(TW_Device_Extension
*tw_dev
, int request_id
)
1868 TW_Command
*command_packet
;
1869 unsigned long command_que_value
;
1870 unsigned long param_value
;
1872 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsiop_test_unit_ready()\n");
1874 /* Initialize command packet */
1875 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
1876 if (command_packet
== NULL
) {
1877 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n");
1880 memset(command_packet
, 0, sizeof(TW_Sector
));
1881 command_packet
->opcode__sgloffset
= TW_OPSGL_IN(2, TW_OP_GET_PARAM
);
1882 command_packet
->size
= 4;
1883 command_packet
->request_id
= request_id
;
1884 command_packet
->status
= 0;
1885 command_packet
->flags
= 0;
1886 command_packet
->byte6
.parameter_count
= 1;
1888 /* Now setup the param */
1889 if (tw_dev
->alignment_virtual_address
[request_id
] == NULL
) {
1890 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n");
1893 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1894 memset(param
, 0, sizeof(TW_Sector
));
1895 param
->table_id
= 3; /* unit summary table */
1896 param
->parameter_id
= 3; /* unitsstatus parameter */
1897 param
->parameter_size_bytes
= TW_MAX_UNITS
;
1898 param_value
= tw_dev
->alignment_physical_address
[request_id
];
1899 if (param_value
== 0) {
1900 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n");
1904 command_packet
->byte8
.param
.sgl
[0].address
= param_value
;
1905 command_packet
->byte8
.param
.sgl
[0].length
= sizeof(TW_Sector
);
1906 command_que_value
= tw_dev
->command_packet_physical_address
[request_id
];
1907 if (command_que_value
== 0) {
1908 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n");
1912 /* Now try to post the command packet */
1913 tw_post_command_packet(tw_dev
, request_id
);
1916 } /* End tw_scsiop_test_unit_ready() */
1918 /* This function is called by the isr to complete a testunitready command */
1919 static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension
*tw_dev
, int request_id
)
1921 unsigned char *is_unit_present
;
1924 dprintk(KERN_WARNING
"3w-xxxx: tw_scsiop_test_unit_ready_complete()\n");
1926 param
= (TW_Param
*)tw_dev
->alignment_virtual_address
[request_id
];
1927 if (param
== NULL
) {
1928 printk(KERN_WARNING
"3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n");
1931 is_unit_present
= &(param
->data
[0]);
1933 if (is_unit_present
[tw_dev
->srb
[request_id
]->device
->id
] & TW_UNIT_ONLINE
) {
1934 tw_dev
->is_unit_present
[tw_dev
->srb
[request_id
]->device
->id
] = 1;
1936 tw_dev
->is_unit_present
[tw_dev
->srb
[request_id
]->device
->id
] = 0;
1937 tw_dev
->srb
[request_id
]->result
= (DID_BAD_TARGET
<< 16);
1938 return TW_ISR_DONT_RESULT
;
1942 } /* End tw_scsiop_test_unit_ready_complete() */
1944 /* This is the main scsi queue function to handle scsi opcodes */
1945 static int tw_scsi_queue(struct scsi_cmnd
*SCpnt
, void (*done
)(struct scsi_cmnd
*))
1947 unsigned char *command
= SCpnt
->cmnd
;
1950 TW_Device_Extension
*tw_dev
= (TW_Device_Extension
*)SCpnt
->device
->host
->hostdata
;
1952 /* If we are resetting due to timed out ioctl, report as busy */
1953 if (test_bit(TW_IN_RESET
, &tw_dev
->flags
))
1954 return SCSI_MLQUEUE_HOST_BUSY
;
1956 /* Save done function into Scsi_Cmnd struct */
1957 SCpnt
->scsi_done
= done
;
1959 /* Queue the command and get a request id */
1960 tw_state_request_start(tw_dev
, &request_id
);
1962 /* Save the scsi command for use by the ISR */
1963 tw_dev
->srb
[request_id
] = SCpnt
;
1965 /* Initialize phase to zero */
1966 SCpnt
->SCp
.phase
= TW_PHASE_INITIAL
;
1973 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n");
1974 retval
= tw_scsiop_read_write(tw_dev
, request_id
);
1976 case TEST_UNIT_READY
:
1977 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n");
1978 retval
= tw_scsiop_test_unit_ready(tw_dev
, request_id
);
1981 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n");
1982 retval
= tw_scsiop_inquiry(tw_dev
, request_id
);
1985 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n");
1986 retval
= tw_scsiop_read_capacity(tw_dev
, request_id
);
1989 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n");
1990 retval
= tw_scsiop_request_sense(tw_dev
, request_id
);
1993 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n");
1994 retval
= tw_scsiop_mode_sense(tw_dev
, request_id
);
1996 case SYNCHRONIZE_CACHE
:
1997 dprintk(KERN_NOTICE
"3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n");
1998 retval
= tw_scsiop_synchronize_cache(tw_dev
, request_id
);
2001 printk(KERN_WARNING
"3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n");
2004 printk(KERN_NOTICE
"3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev
->host
->host_no
, *command
);
2005 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
2006 tw_state_request_finish(tw_dev
, request_id
);
2007 SCpnt
->result
= (DID_BAD_TARGET
<< 16);
2012 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
2013 tw_state_request_finish(tw_dev
, request_id
);
2014 SCpnt
->result
= (DID_ERROR
<< 16);
2019 } /* End tw_scsi_queue() */
2021 /* This function is the interrupt service routine */
2022 static irqreturn_t
tw_interrupt(int irq
, void *dev_instance
)
2025 u32 status_reg_value
;
2026 TW_Device_Extension
*tw_dev
= (TW_Device_Extension
*)dev_instance
;
2027 TW_Response_Queue response_que
;
2028 int error
= 0, retval
= 0;
2029 TW_Command
*command_packet
;
2032 /* Get the host lock for io completions */
2033 spin_lock(tw_dev
->host
->host_lock
);
2035 /* Read the registers */
2036 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
2038 /* Check if this is our interrupt, otherwise bail */
2039 if (!(status_reg_value
& TW_STATUS_VALID_INTERRUPT
))
2040 goto tw_interrupt_bail
;
2044 /* If we are resetting, bail */
2045 if (test_bit(TW_IN_RESET
, &tw_dev
->flags
))
2046 goto tw_interrupt_bail
;
2048 /* Check controller for errors */
2049 if (tw_check_bits(status_reg_value
)) {
2050 dprintk(KERN_WARNING
"3w-xxxx: tw_interrupt(): Unexpected bits.\n");
2051 if (tw_decode_bits(tw_dev
, status_reg_value
, 1)) {
2052 TW_CLEAR_ALL_INTERRUPTS(tw_dev
);
2053 goto tw_interrupt_bail
;
2057 /* Handle host interrupt */
2058 if (status_reg_value
& TW_STATUS_HOST_INTERRUPT
) {
2059 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): Received host interrupt.\n");
2060 TW_CLEAR_HOST_INTERRUPT(tw_dev
);
2063 /* Handle attention interrupt */
2064 if (status_reg_value
& TW_STATUS_ATTENTION_INTERRUPT
) {
2065 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): Received attention interrupt.\n");
2066 TW_CLEAR_ATTENTION_INTERRUPT(tw_dev
);
2067 tw_state_request_start(tw_dev
, &request_id
);
2068 error
= tw_aen_read_queue(tw_dev
, request_id
);
2070 printk(KERN_WARNING
"3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev
->host
->host_no
);
2071 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
2072 tw_state_request_finish(tw_dev
, request_id
);
2076 /* Handle command interrupt */
2077 if (status_reg_value
& TW_STATUS_COMMAND_INTERRUPT
) {
2078 /* Drain as many pending commands as we can */
2079 while (tw_dev
->pending_request_count
> 0) {
2080 request_id
= tw_dev
->pending_queue
[tw_dev
->pending_head
];
2081 if (tw_dev
->state
[request_id
] != TW_S_PENDING
) {
2082 printk(KERN_WARNING
"3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev
->host
->host_no
);
2085 if (tw_post_command_packet(tw_dev
, request_id
)==0) {
2086 if (tw_dev
->pending_head
== TW_Q_LENGTH
-1) {
2087 tw_dev
->pending_head
= TW_Q_START
;
2089 tw_dev
->pending_head
= tw_dev
->pending_head
+ 1;
2091 tw_dev
->pending_request_count
--;
2093 /* If we get here, we will continue re-posting on the next command interrupt */
2097 /* If there are no more pending requests, we mask command interrupt */
2098 if (tw_dev
->pending_request_count
== 0)
2099 TW_MASK_COMMAND_INTERRUPT(tw_dev
);
2102 /* Handle response interrupt */
2103 if (status_reg_value
& TW_STATUS_RESPONSE_INTERRUPT
) {
2104 /* Drain the response queue from the board */
2105 while ((status_reg_value
& TW_STATUS_RESPONSE_QUEUE_EMPTY
) == 0) {
2106 /* Read response queue register */
2107 response_que
.value
= inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev
));
2108 request_id
= TW_RESID_OUT(response_que
.response_id
);
2109 command_packet
= (TW_Command
*)tw_dev
->command_packet_virtual_address
[request_id
];
2112 /* Check for bad response */
2113 if (command_packet
->status
!= 0) {
2114 /* If internal command, don't error, don't fill sense */
2115 if (tw_dev
->srb
[request_id
] == NULL
) {
2116 tw_decode_sense(tw_dev
, request_id
, 0);
2118 error
= tw_decode_sense(tw_dev
, request_id
, 1);
2122 /* Check for correct state */
2123 if (tw_dev
->state
[request_id
] != TW_S_POSTED
) {
2124 if (tw_dev
->srb
[request_id
] != NULL
) {
2125 printk(KERN_WARNING
"3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev
->host
->host_no
);
2130 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id
);
2132 /* Check for internal command completion */
2133 if (tw_dev
->srb
[request_id
] == NULL
) {
2134 dprintk(KERN_WARNING
"3w-xxxx: tw_interrupt(): Found internally posted command.\n");
2135 /* Check for chrdev ioctl completion */
2136 if (request_id
!= tw_dev
->chrdev_request_id
) {
2137 retval
= tw_aen_complete(tw_dev
, request_id
);
2139 printk(KERN_WARNING
"3w-xxxx: scsi%d: Error completing aen.\n", tw_dev
->host
->host_no
);
2142 tw_dev
->chrdev_request_id
= TW_IOCTL_CHRDEV_FREE
;
2143 wake_up(&tw_dev
->ioctl_wqueue
);
2146 switch (tw_dev
->srb
[request_id
]->cmnd
[0]) {
2149 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n");
2153 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n");
2155 case TEST_UNIT_READY
:
2156 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n");
2157 error
= tw_scsiop_test_unit_ready_complete(tw_dev
, request_id
);
2160 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): caught INQUIRY\n");
2161 error
= tw_scsiop_inquiry_complete(tw_dev
, request_id
);
2164 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n");
2165 error
= tw_scsiop_read_capacity_complete(tw_dev
, request_id
);
2168 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): caught MODE_SENSE\n");
2169 error
= tw_scsiop_mode_sense_complete(tw_dev
, request_id
);
2171 case SYNCHRONIZE_CACHE
:
2172 dprintk(KERN_NOTICE
"3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n");
2175 printk(KERN_WARNING
"3w-xxxx: case slip in tw_interrupt()\n");
2179 /* If no error command was a success */
2181 tw_dev
->srb
[request_id
]->result
= (DID_OK
<< 16);
2184 /* If error, command failed */
2186 /* Ask for a host reset */
2187 tw_dev
->srb
[request_id
]->result
= (DID_OK
<< 16) | (CHECK_CONDITION
<< 1);
2190 /* Now complete the io */
2191 if ((error
!= TW_ISR_DONT_COMPLETE
)) {
2192 tw_dev
->state
[request_id
] = TW_S_COMPLETED
;
2193 tw_state_request_finish(tw_dev
, request_id
);
2194 tw_dev
->posted_request_count
--;
2195 tw_dev
->srb
[request_id
]->scsi_done(tw_dev
->srb
[request_id
]);
2197 tw_unmap_scsi_data(tw_dev
->tw_pci_dev
, tw_dev
->srb
[request_id
]);
2201 /* Check for valid status after each drain */
2202 status_reg_value
= inl(TW_STATUS_REG_ADDR(tw_dev
));
2203 if (tw_check_bits(status_reg_value
)) {
2204 dprintk(KERN_WARNING
"3w-xxxx: tw_interrupt(): Unexpected bits.\n");
2205 if (tw_decode_bits(tw_dev
, status_reg_value
, 1)) {
2206 TW_CLEAR_ALL_INTERRUPTS(tw_dev
);
2207 goto tw_interrupt_bail
;
2214 spin_unlock(tw_dev
->host
->host_lock
);
2215 return IRQ_RETVAL(handled
);
2216 } /* End tw_interrupt() */
2218 /* This function tells the controller to shut down */
2219 static void __tw_shutdown(TW_Device_Extension
*tw_dev
)
2221 /* Disable interrupts */
2222 TW_DISABLE_INTERRUPTS(tw_dev
);
2224 /* Free up the IRQ */
2225 free_irq(tw_dev
->tw_pci_dev
->irq
, tw_dev
);
2227 printk(KERN_WARNING
"3w-xxxx: Shutting down host %d.\n", tw_dev
->host
->host_no
);
2229 /* Tell the card we are shutting down */
2230 if (tw_initconnection(tw_dev
, 1)) {
2231 printk(KERN_WARNING
"3w-xxxx: Connection shutdown failed.\n");
2233 printk(KERN_WARNING
"3w-xxxx: Shutdown complete.\n");
2236 /* Clear all interrupts just before exit */
2237 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev
);
2238 } /* End __tw_shutdown() */
2240 /* Wrapper for __tw_shutdown */
2241 static void tw_shutdown(struct pci_dev
*pdev
)
2243 struct Scsi_Host
*host
= pci_get_drvdata(pdev
);
2244 TW_Device_Extension
*tw_dev
= (TW_Device_Extension
*)host
->hostdata
;
2246 __tw_shutdown(tw_dev
);
2247 } /* End tw_shutdown() */
2249 /* This function gets called when a disk is coming online */
2250 static int tw_slave_configure(struct scsi_device
*sdev
)
2252 /* Force 60 second timeout */
2253 blk_queue_rq_timeout(sdev
->request_queue
, 60 * HZ
);
2256 } /* End tw_slave_configure() */
2258 static struct scsi_host_template driver_template
= {
2259 .module
= THIS_MODULE
,
2260 .name
= "3ware Storage Controller",
2261 .queuecommand
= tw_scsi_queue
,
2262 .eh_host_reset_handler
= tw_scsi_eh_reset
,
2263 .bios_param
= tw_scsi_biosparam
,
2264 .change_queue_depth
= tw_change_queue_depth
,
2265 .can_queue
= TW_Q_LENGTH
-2,
2266 .slave_configure
= tw_slave_configure
,
2268 .sg_tablesize
= TW_MAX_SGL_LENGTH
,
2269 .max_sectors
= TW_MAX_SECTORS
,
2270 .cmd_per_lun
= TW_MAX_CMDS_PER_LUN
,
2271 .use_clustering
= ENABLE_CLUSTERING
,
2272 .shost_attrs
= tw_host_attrs
,
2276 /* This function will probe and initialize a card */
2277 static int __devinit
tw_probe(struct pci_dev
*pdev
, const struct pci_device_id
*dev_id
)
2279 struct Scsi_Host
*host
= NULL
;
2280 TW_Device_Extension
*tw_dev
;
2281 int retval
= -ENODEV
;
2283 retval
= pci_enable_device(pdev
);
2285 printk(KERN_WARNING
"3w-xxxx: Failed to enable pci device.");
2286 goto out_disable_device
;
2289 pci_set_master(pdev
);
2291 retval
= pci_set_dma_mask(pdev
, TW_DMA_MASK
);
2293 printk(KERN_WARNING
"3w-xxxx: Failed to set dma mask.");
2294 goto out_disable_device
;
2297 host
= scsi_host_alloc(&driver_template
, sizeof(TW_Device_Extension
));
2299 printk(KERN_WARNING
"3w-xxxx: Failed to allocate memory for device extension.");
2301 goto out_disable_device
;
2303 tw_dev
= (TW_Device_Extension
*)host
->hostdata
;
2305 /* Save values to device extension */
2306 tw_dev
->host
= host
;
2307 tw_dev
->tw_pci_dev
= pdev
;
2309 if (tw_initialize_device_extension(tw_dev
)) {
2310 printk(KERN_WARNING
"3w-xxxx: Failed to initialize device extension.");
2311 goto out_free_device_extension
;
2314 /* Request IO regions */
2315 retval
= pci_request_regions(pdev
, "3w-xxxx");
2317 printk(KERN_WARNING
"3w-xxxx: Failed to get mem region.");
2318 goto out_free_device_extension
;
2321 /* Save base address */
2322 tw_dev
->base_addr
= pci_resource_start(pdev
, 0);
2323 if (!tw_dev
->base_addr
) {
2324 printk(KERN_WARNING
"3w-xxxx: Failed to get io address.");
2325 goto out_release_mem_region
;
2328 /* Disable interrupts on the card */
2329 TW_DISABLE_INTERRUPTS(tw_dev
);
2331 /* Initialize the card */
2332 if (tw_reset_sequence(tw_dev
))
2333 goto out_release_mem_region
;
2335 /* Set host specific parameters */
2336 host
->max_id
= TW_MAX_UNITS
;
2337 host
->max_cmd_len
= TW_MAX_CDB_LEN
;
2339 /* Luns and channels aren't supported by adapter */
2341 host
->max_channel
= 0;
2343 /* Register the card with the kernel SCSI layer */
2344 retval
= scsi_add_host(host
, &pdev
->dev
);
2346 printk(KERN_WARNING
"3w-xxxx: scsi add host failed");
2347 goto out_release_mem_region
;
2350 pci_set_drvdata(pdev
, host
);
2352 printk(KERN_WARNING
"3w-xxxx: scsi%d: Found a 3ware Storage Controller at 0x%x, IRQ: %d.\n", host
->host_no
, tw_dev
->base_addr
, pdev
->irq
);
2354 /* Now setup the interrupt handler */
2355 retval
= request_irq(pdev
->irq
, tw_interrupt
, IRQF_SHARED
, "3w-xxxx", tw_dev
);
2357 printk(KERN_WARNING
"3w-xxxx: Error requesting IRQ.");
2358 goto out_remove_host
;
2361 tw_device_extension_list
[tw_device_extension_count
] = tw_dev
;
2362 tw_device_extension_count
++;
2364 /* Re-enable interrupts on the card */
2365 TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev
);
2367 /* Finally, scan the host */
2368 scsi_scan_host(host
);
2370 if (twe_major
== -1) {
2371 if ((twe_major
= register_chrdev (0, "twe", &tw_fops
)) < 0)
2372 printk(KERN_WARNING
"3w-xxxx: Failed to register character device.");
2377 scsi_remove_host(host
);
2378 out_release_mem_region
:
2379 pci_release_regions(pdev
);
2380 out_free_device_extension
:
2381 tw_free_device_extension(tw_dev
);
2382 scsi_host_put(host
);
2384 pci_disable_device(pdev
);
2387 } /* End tw_probe() */
2389 /* This function is called to remove a device */
2390 static void tw_remove(struct pci_dev
*pdev
)
2392 struct Scsi_Host
*host
= pci_get_drvdata(pdev
);
2393 TW_Device_Extension
*tw_dev
= (TW_Device_Extension
*)host
->hostdata
;
2395 scsi_remove_host(tw_dev
->host
);
2397 /* Unregister character device */
2398 if (twe_major
>= 0) {
2399 unregister_chrdev(twe_major
, "twe");
2403 /* Shutdown the card */
2404 __tw_shutdown(tw_dev
);
2406 /* Free up the mem region */
2407 pci_release_regions(pdev
);
2409 /* Free up device extension resources */
2410 tw_free_device_extension(tw_dev
);
2412 scsi_host_put(tw_dev
->host
);
2413 pci_disable_device(pdev
);
2414 tw_device_extension_count
--;
2415 } /* End tw_remove() */
2417 /* PCI Devices supported by this driver */
2418 static struct pci_device_id tw_pci_tbl
[] __devinitdata
= {
2419 { PCI_VENDOR_ID_3WARE
, PCI_DEVICE_ID_3WARE_1000
,
2420 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
2421 { PCI_VENDOR_ID_3WARE
, PCI_DEVICE_ID_3WARE_7000
,
2422 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
2425 MODULE_DEVICE_TABLE(pci
, tw_pci_tbl
);
2427 /* pci_driver initializer */
2428 static struct pci_driver tw_driver
= {
2430 .id_table
= tw_pci_tbl
,
2432 .remove
= tw_remove
,
2433 .shutdown
= tw_shutdown
,
2436 /* This function is called on driver initialization */
2437 static int __init
tw_init(void)
2439 printk(KERN_WARNING
"3ware Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION
);
2441 return pci_register_driver(&tw_driver
);
2442 } /* End tw_init() */
2444 /* This function is called on driver exit */
2445 static void __exit
tw_exit(void)
2447 pci_unregister_driver(&tw_driver
);
2448 } /* End tw_exit() */
2450 module_init(tw_init
);
2451 module_exit(tw_exit
);