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1da177e4 LT |
1 | /* |
2 | 3w-9xxx.c -- 3ware 9000 Storage Controller device driver for Linux. | |
3 | ||
4deedd84 | 4 | Written By: Adam Radford <linuxraid@lsi.com> |
5 | Modifications By: Tom Couch <linuxraid@lsi.com> | |
1da177e4 | 6 | |
7a252fe7 | 7 | Copyright (C) 2004-2009 Applied Micro Circuits Corporation. |
4deedd84 | 8 | Copyright (C) 2010 LSI Corporation. |
1da177e4 LT |
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: | |
4deedd84 | 44 | linuxraid@lsi.com |
1da177e4 LT |
45 | |
46 | For more information, goto: | |
4deedd84 | 47 | http://www.lsi.com |
1da177e4 LT |
48 | |
49 | Note: This version of the driver does not contain a bundled firmware | |
50 | image. | |
51 | ||
52 | History | |
53 | ------- | |
54 | 2.26.02.000 - Driver cleanup for kernel submission. | |
55 | 2.26.02.001 - Replace schedule_timeout() calls with msleep(). | |
56 | 2.26.02.002 - Add support for PAE mode. | |
57 | Add lun support. | |
58 | Fix twa_remove() to free irq handler/unregister_chrdev() | |
59 | before shutting down card. | |
60 | Change to new 'change_queue_depth' api. | |
61 | Fix 'handled=1' ISR usage, remove bogus IRQ check. | |
62 | Remove un-needed eh_abort handler. | |
63 | Add support for embedded firmware error strings. | |
d327d082 | 64 | 2.26.02.003 - Correctly handle single sgl's with use_sg=1. |
49bfd8db | 65 | 2.26.02.004 - Add support for 9550SX controllers. |
62288f10 | 66 | 2.26.02.005 - Fix use_sg == 0 mapping on systems with 4GB or higher. |
75913d9b | 67 | 2.26.02.006 - Fix 9550SX pchip reset timeout. |
68 | Add big endian support. | |
1e08dcb3 | 69 | 2.26.02.007 - Disable local interrupts during kmap/unmap_atomic(). |
4039c30e | 70 | 2.26.02.008 - Free irq handler in __twa_shutdown(). |
71 | Serialize reset code. | |
72 | Add support for 9650SE controllers. | |
0e78d158 | 73 | 2.26.02.009 - Fix dma mask setting to fallback to 32-bit if 64-bit fails. |
74 | 2.26.02.010 - Add support for 9690SA controllers. | |
3dabec71 | 75 | 2.26.02.011 - Increase max AENs drained to 256. |
76 | Add MSI support and "use_msi" module parameter. | |
77 | Fix bug in twa_get_param() on 4GB+. | |
78 | Use pci_resource_len() for ioremap(). | |
7a252fe7 | 79 | 2.26.02.012 - Add power management support. |
53ca3535 | 80 | 2.26.02.013 - Fix bug in twa_load_sgl(). |
4deedd84 | 81 | 2.26.02.014 - Force 60 second timeout default. |
1da177e4 LT |
82 | */ |
83 | ||
84 | #include <linux/module.h> | |
85 | #include <linux/reboot.h> | |
86 | #include <linux/spinlock.h> | |
87 | #include <linux/interrupt.h> | |
88 | #include <linux/moduleparam.h> | |
89 | #include <linux/errno.h> | |
90 | #include <linux/types.h> | |
91 | #include <linux/delay.h> | |
92 | #include <linux/pci.h> | |
93 | #include <linux/time.h> | |
a12e25bd | 94 | #include <linux/mutex.h> |
5a0e3ad6 | 95 | #include <linux/slab.h> |
1da177e4 LT |
96 | #include <asm/io.h> |
97 | #include <asm/irq.h> | |
98 | #include <asm/uaccess.h> | |
99 | #include <scsi/scsi.h> | |
100 | #include <scsi/scsi_host.h> | |
101 | #include <scsi/scsi_tcq.h> | |
102 | #include <scsi/scsi_cmnd.h> | |
103 | #include "3w-9xxx.h" | |
104 | ||
105 | /* Globals */ | |
4deedd84 | 106 | #define TW_DRIVER_VERSION "2.26.02.014" |
c45d15d2 | 107 | static DEFINE_MUTEX(twa_chrdev_mutex); |
1da177e4 LT |
108 | static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT]; |
109 | static unsigned int twa_device_extension_count; | |
110 | static int twa_major = -1; | |
111 | extern struct timezone sys_tz; | |
112 | ||
113 | /* Module parameters */ | |
4deedd84 | 114 | MODULE_AUTHOR ("LSI"); |
1da177e4 LT |
115 | MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver"); |
116 | MODULE_LICENSE("GPL"); | |
117 | MODULE_VERSION(TW_DRIVER_VERSION); | |
118 | ||
3dabec71 | 119 | static int use_msi = 0; |
120 | module_param(use_msi, int, S_IRUGO); | |
121 | MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0"); | |
122 | ||
1da177e4 LT |
123 | /* Function prototypes */ |
124 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header); | |
125 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id); | |
126 | static char *twa_aen_severity_lookup(unsigned char severity_code); | |
127 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id); | |
f4927c45 | 128 | static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg); |
1da177e4 LT |
129 | static int twa_chrdev_open(struct inode *inode, struct file *file); |
130 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host); | |
131 | static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id); | |
132 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id); | |
133 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, | |
134 | u32 set_features, unsigned short current_fw_srl, | |
135 | unsigned short current_fw_arch_id, | |
136 | unsigned short current_fw_branch, | |
137 | unsigned short current_fw_build, | |
138 | unsigned short *fw_on_ctlr_srl, | |
139 | unsigned short *fw_on_ctlr_arch_id, | |
140 | unsigned short *fw_on_ctlr_branch, | |
141 | unsigned short *fw_on_ctlr_build, | |
142 | u32 *init_connect_result); | |
0e78d158 | 143 | static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length); |
1da177e4 LT |
144 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds); |
145 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds); | |
146 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal); | |
0e78d158 | 147 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev); |
1da177e4 LT |
148 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset); |
149 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg); | |
150 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id); | |
151 | static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code); | |
152 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id); | |
153 | ||
154 | /* Functions */ | |
155 | ||
156 | /* Show some statistics about the card */ | |
ee959b00 TJ |
157 | static ssize_t twa_show_stats(struct device *dev, |
158 | struct device_attribute *attr, char *buf) | |
1da177e4 | 159 | { |
ee959b00 | 160 | struct Scsi_Host *host = class_to_shost(dev); |
1da177e4 LT |
161 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
162 | unsigned long flags = 0; | |
163 | ssize_t len; | |
164 | ||
165 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
166 | len = snprintf(buf, PAGE_SIZE, "3w-9xxx Driver version: %s\n" | |
167 | "Current commands posted: %4d\n" | |
168 | "Max commands posted: %4d\n" | |
169 | "Current pending commands: %4d\n" | |
170 | "Max pending commands: %4d\n" | |
171 | "Last sgl length: %4d\n" | |
172 | "Max sgl length: %4d\n" | |
173 | "Last sector count: %4d\n" | |
174 | "Max sector count: %4d\n" | |
175 | "SCSI Host Resets: %4d\n" | |
176 | "AEN's: %4d\n", | |
177 | TW_DRIVER_VERSION, | |
178 | tw_dev->posted_request_count, | |
179 | tw_dev->max_posted_request_count, | |
180 | tw_dev->pending_request_count, | |
181 | tw_dev->max_pending_request_count, | |
182 | tw_dev->sgl_entries, | |
183 | tw_dev->max_sgl_entries, | |
184 | tw_dev->sector_count, | |
185 | tw_dev->max_sector_count, | |
186 | tw_dev->num_resets, | |
187 | tw_dev->aen_count); | |
188 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
189 | return len; | |
190 | } /* End twa_show_stats() */ | |
191 | ||
192 | /* This function will set a devices queue depth */ | |
e881a172 MC |
193 | static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth, |
194 | int reason) | |
1da177e4 | 195 | { |
e881a172 MC |
196 | if (reason != SCSI_QDEPTH_DEFAULT) |
197 | return -EOPNOTSUPP; | |
198 | ||
1da177e4 LT |
199 | if (queue_depth > TW_Q_LENGTH-2) |
200 | queue_depth = TW_Q_LENGTH-2; | |
201 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); | |
202 | return queue_depth; | |
203 | } /* End twa_change_queue_depth() */ | |
204 | ||
205 | /* Create sysfs 'stats' entry */ | |
ee959b00 | 206 | static struct device_attribute twa_host_stats_attr = { |
1da177e4 LT |
207 | .attr = { |
208 | .name = "stats", | |
209 | .mode = S_IRUGO, | |
210 | }, | |
211 | .show = twa_show_stats | |
212 | }; | |
213 | ||
214 | /* Host attributes initializer */ | |
ee959b00 | 215 | static struct device_attribute *twa_host_attrs[] = { |
1da177e4 LT |
216 | &twa_host_stats_attr, |
217 | NULL, | |
218 | }; | |
219 | ||
220 | /* File operations struct for character device */ | |
00977a59 | 221 | static const struct file_operations twa_fops = { |
1da177e4 | 222 | .owner = THIS_MODULE, |
f4927c45 | 223 | .unlocked_ioctl = twa_chrdev_ioctl, |
1da177e4 LT |
224 | .open = twa_chrdev_open, |
225 | .release = NULL | |
226 | }; | |
227 | ||
228 | /* This function will complete an aen request from the isr */ | |
229 | static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id) | |
230 | { | |
231 | TW_Command_Full *full_command_packet; | |
232 | TW_Command *command_packet; | |
233 | TW_Command_Apache_Header *header; | |
234 | unsigned short aen; | |
235 | int retval = 1; | |
236 | ||
237 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
238 | tw_dev->posted_request_count--; | |
75913d9b | 239 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
240 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
241 | command_packet = &full_command_packet->command.oldcommand; | |
242 | ||
243 | /* First check for internal completion of set param for time sync */ | |
244 | if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) { | |
245 | /* Keep reading the queue in case there are more aen's */ | |
246 | if (twa_aen_read_queue(tw_dev, request_id)) | |
247 | goto out2; | |
248 | else { | |
249 | retval = 0; | |
250 | goto out; | |
251 | } | |
252 | } | |
253 | ||
254 | switch (aen) { | |
255 | case TW_AEN_QUEUE_EMPTY: | |
256 | /* Quit reading the queue if this is the last one */ | |
257 | break; | |
258 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
259 | twa_aen_sync_time(tw_dev, request_id); | |
260 | retval = 0; | |
261 | goto out; | |
262 | default: | |
263 | twa_aen_queue_event(tw_dev, header); | |
264 | ||
265 | /* If there are more aen's, keep reading the queue */ | |
266 | if (twa_aen_read_queue(tw_dev, request_id)) | |
267 | goto out2; | |
268 | else { | |
269 | retval = 0; | |
270 | goto out; | |
271 | } | |
272 | } | |
273 | retval = 0; | |
274 | out2: | |
275 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
276 | twa_free_request_id(tw_dev, request_id); | |
277 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
278 | out: | |
279 | return retval; | |
280 | } /* End twa_aen_complete() */ | |
281 | ||
282 | /* This function will drain aen queue */ | |
283 | static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) | |
284 | { | |
285 | int request_id = 0; | |
286 | char cdb[TW_MAX_CDB_LEN]; | |
287 | TW_SG_Entry sglist[1]; | |
288 | int finished = 0, count = 0; | |
289 | TW_Command_Full *full_command_packet; | |
290 | TW_Command_Apache_Header *header; | |
291 | unsigned short aen; | |
292 | int first_reset = 0, queue = 0, retval = 1; | |
293 | ||
294 | if (no_check_reset) | |
295 | first_reset = 0; | |
296 | else | |
297 | first_reset = 1; | |
298 | ||
299 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
300 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
301 | ||
302 | /* Initialize cdb */ | |
303 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
304 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
305 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
306 | ||
307 | /* Initialize sglist */ | |
308 | memset(&sglist, 0, sizeof(TW_SG_Entry)); | |
309 | sglist[0].length = TW_SECTOR_SIZE; | |
310 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
311 | ||
312 | if (sglist[0].address & TW_ALIGNMENT_9000_SGL) { | |
313 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Found unaligned address during AEN drain"); | |
314 | goto out; | |
315 | } | |
316 | ||
317 | /* Mark internal command */ | |
318 | tw_dev->srb[request_id] = NULL; | |
319 | ||
320 | do { | |
321 | /* Send command to the board */ | |
322 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
323 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Error posting request sense"); | |
324 | goto out; | |
325 | } | |
326 | ||
327 | /* Now poll for completion */ | |
328 | if (twa_poll_response(tw_dev, request_id, 30)) { | |
329 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "No valid response while draining AEN queue"); | |
330 | tw_dev->posted_request_count--; | |
331 | goto out; | |
332 | } | |
333 | ||
334 | tw_dev->posted_request_count--; | |
335 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
75913d9b | 336 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
337 | queue = 0; |
338 | count++; | |
339 | ||
340 | switch (aen) { | |
341 | case TW_AEN_QUEUE_EMPTY: | |
342 | if (first_reset != 1) | |
343 | goto out; | |
344 | else | |
345 | finished = 1; | |
346 | break; | |
347 | case TW_AEN_SOFT_RESET: | |
348 | if (first_reset == 0) | |
349 | first_reset = 1; | |
350 | else | |
351 | queue = 1; | |
352 | break; | |
353 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
354 | break; | |
355 | default: | |
356 | queue = 1; | |
357 | } | |
358 | ||
359 | /* Now queue an event info */ | |
360 | if (queue) | |
361 | twa_aen_queue_event(tw_dev, header); | |
362 | } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN)); | |
363 | ||
364 | if (count == TW_MAX_AEN_DRAIN) | |
365 | goto out; | |
366 | ||
367 | retval = 0; | |
368 | out: | |
369 | tw_dev->state[request_id] = TW_S_INITIAL; | |
370 | return retval; | |
371 | } /* End twa_aen_drain_queue() */ | |
372 | ||
373 | /* This function will queue an event */ | |
374 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header) | |
375 | { | |
376 | u32 local_time; | |
377 | struct timeval time; | |
378 | TW_Event *event; | |
379 | unsigned short aen; | |
380 | char host[16]; | |
381 | char *error_str; | |
382 | ||
383 | tw_dev->aen_count++; | |
384 | ||
385 | /* Fill out event info */ | |
386 | event = tw_dev->event_queue[tw_dev->error_index]; | |
387 | ||
388 | /* Check for clobber */ | |
389 | host[0] = '\0'; | |
390 | if (tw_dev->host) { | |
391 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | |
392 | if (event->retrieved == TW_AEN_NOT_RETRIEVED) | |
393 | tw_dev->aen_clobber = 1; | |
394 | } | |
395 | ||
75913d9b | 396 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
397 | memset(event, 0, sizeof(TW_Event)); |
398 | ||
399 | event->severity = TW_SEV_OUT(header->status_block.severity__reserved); | |
400 | do_gettimeofday(&time); | |
401 | local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60)); | |
402 | event->time_stamp_sec = local_time; | |
403 | event->aen_code = aen; | |
404 | event->retrieved = TW_AEN_NOT_RETRIEVED; | |
405 | event->sequence_id = tw_dev->error_sequence_id; | |
406 | tw_dev->error_sequence_id++; | |
407 | ||
408 | /* Check for embedded error string */ | |
409 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]); | |
410 | ||
411 | header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0'; | |
412 | event->parameter_len = strlen(header->err_specific_desc); | |
75913d9b | 413 | memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + (error_str[0] == '\0' ? 0 : (1 + strlen(error_str)))); |
1da177e4 LT |
414 | if (event->severity != TW_AEN_SEVERITY_DEBUG) |
415 | printk(KERN_WARNING "3w-9xxx:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n", | |
416 | host, | |
417 | twa_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)), | |
418 | TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, | |
419 | error_str[0] == '\0' ? twa_string_lookup(twa_aen_table, aen) : error_str, | |
420 | header->err_specific_desc); | |
421 | else | |
422 | tw_dev->aen_count--; | |
423 | ||
424 | if ((tw_dev->error_index + 1) == TW_Q_LENGTH) | |
425 | tw_dev->event_queue_wrapped = 1; | |
426 | tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH; | |
427 | } /* End twa_aen_queue_event() */ | |
428 | ||
429 | /* This function will read the aen queue from the isr */ | |
430 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | |
431 | { | |
432 | char cdb[TW_MAX_CDB_LEN]; | |
433 | TW_SG_Entry sglist[1]; | |
434 | TW_Command_Full *full_command_packet; | |
435 | int retval = 1; | |
436 | ||
437 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
438 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
439 | ||
440 | /* Initialize cdb */ | |
441 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
442 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
443 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
444 | ||
445 | /* Initialize sglist */ | |
446 | memset(&sglist, 0, sizeof(TW_SG_Entry)); | |
447 | sglist[0].length = TW_SECTOR_SIZE; | |
448 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
449 | ||
450 | /* Mark internal command */ | |
451 | tw_dev->srb[request_id] = NULL; | |
452 | ||
453 | /* Now post the command packet */ | |
454 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
455 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "Post failed while reading AEN queue"); | |
456 | goto out; | |
457 | } | |
458 | retval = 0; | |
459 | out: | |
460 | return retval; | |
461 | } /* End twa_aen_read_queue() */ | |
462 | ||
463 | /* This function will look up an AEN severity string */ | |
464 | static char *twa_aen_severity_lookup(unsigned char severity_code) | |
465 | { | |
466 | char *retval = NULL; | |
467 | ||
468 | if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) || | |
469 | (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG)) | |
470 | goto out; | |
471 | ||
472 | retval = twa_aen_severity_table[severity_code]; | |
473 | out: | |
474 | return retval; | |
475 | } /* End twa_aen_severity_lookup() */ | |
476 | ||
477 | /* This function will sync firmware time with the host time */ | |
478 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) | |
479 | { | |
480 | u32 schedulertime; | |
481 | struct timeval utc; | |
482 | TW_Command_Full *full_command_packet; | |
483 | TW_Command *command_packet; | |
484 | TW_Param_Apache *param; | |
485 | u32 local_time; | |
486 | ||
487 | /* Fill out the command packet */ | |
488 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
489 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
490 | command_packet = &full_command_packet->command.oldcommand; | |
491 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | |
492 | command_packet->request_id = request_id; | |
75913d9b | 493 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
494 | command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); | |
1da177e4 | 495 | command_packet->size = TW_COMMAND_SIZE; |
75913d9b | 496 | command_packet->byte6_offset.parameter_count = cpu_to_le16(1); |
1da177e4 LT |
497 | |
498 | /* Setup the param */ | |
499 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
500 | memset(param, 0, TW_SECTOR_SIZE); | |
75913d9b | 501 | param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */ |
502 | param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */ | |
503 | param->parameter_size_bytes = cpu_to_le16(4); | |
1da177e4 LT |
504 | |
505 | /* Convert system time in UTC to local time seconds since last | |
506 | Sunday 12:00AM */ | |
507 | do_gettimeofday(&utc); | |
508 | local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60)); | |
509 | schedulertime = local_time - (3 * 86400); | |
75913d9b | 510 | schedulertime = cpu_to_le32(schedulertime % 604800); |
1da177e4 LT |
511 | |
512 | memcpy(param->data, &schedulertime, sizeof(u32)); | |
513 | ||
514 | /* Mark internal command */ | |
515 | tw_dev->srb[request_id] = NULL; | |
516 | ||
517 | /* Now post the command */ | |
518 | twa_post_command_packet(tw_dev, request_id, 1); | |
519 | } /* End twa_aen_sync_time() */ | |
520 | ||
521 | /* This function will allocate memory and check if it is correctly aligned */ | |
522 | static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | |
523 | { | |
524 | int i; | |
525 | dma_addr_t dma_handle; | |
526 | unsigned long *cpu_addr; | |
527 | int retval = 1; | |
528 | ||
529 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); | |
530 | if (!cpu_addr) { | |
531 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed"); | |
532 | goto out; | |
533 | } | |
534 | ||
535 | if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) { | |
536 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory"); | |
537 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); | |
538 | goto out; | |
539 | } | |
540 | ||
541 | memset(cpu_addr, 0, size*TW_Q_LENGTH); | |
542 | ||
543 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
544 | switch(which) { | |
545 | case 0: | |
546 | tw_dev->command_packet_phys[i] = dma_handle+(i*size); | |
547 | tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size)); | |
548 | break; | |
549 | case 1: | |
550 | tw_dev->generic_buffer_phys[i] = dma_handle+(i*size); | |
551 | tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
552 | break; | |
553 | } | |
554 | } | |
555 | retval = 0; | |
556 | out: | |
557 | return retval; | |
558 | } /* End twa_allocate_memory() */ | |
559 | ||
560 | /* This function will check the status register for unexpected bits */ | |
561 | static int twa_check_bits(u32 status_reg_value) | |
562 | { | |
563 | int retval = 1; | |
564 | ||
565 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) | |
566 | goto out; | |
567 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) | |
568 | goto out; | |
569 | ||
570 | retval = 0; | |
571 | out: | |
572 | return retval; | |
573 | } /* End twa_check_bits() */ | |
574 | ||
575 | /* This function will check the srl and decide if we are compatible */ | |
576 | static int twa_check_srl(TW_Device_Extension *tw_dev, int *flashed) | |
577 | { | |
578 | int retval = 1; | |
579 | unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0; | |
580 | unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0; | |
581 | u32 init_connect_result = 0; | |
582 | ||
583 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
584 | TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL, | |
585 | TW_9000_ARCH_ID, TW_CURRENT_DRIVER_BRANCH, | |
586 | TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl, | |
587 | &fw_on_ctlr_arch_id, &fw_on_ctlr_branch, | |
588 | &fw_on_ctlr_build, &init_connect_result)) { | |
589 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "Initconnection failed while checking SRL"); | |
590 | goto out; | |
591 | } | |
592 | ||
4039c30e | 593 | tw_dev->tw_compat_info.working_srl = fw_on_ctlr_srl; |
594 | tw_dev->tw_compat_info.working_branch = fw_on_ctlr_branch; | |
595 | tw_dev->tw_compat_info.working_build = fw_on_ctlr_build; | |
1da177e4 LT |
596 | |
597 | /* Try base mode compatibility */ | |
598 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { | |
599 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
600 | TW_EXTENDED_INIT_CONNECT, | |
601 | TW_BASE_FW_SRL, TW_9000_ARCH_ID, | |
602 | TW_BASE_FW_BRANCH, TW_BASE_FW_BUILD, | |
603 | &fw_on_ctlr_srl, &fw_on_ctlr_arch_id, | |
604 | &fw_on_ctlr_branch, &fw_on_ctlr_build, | |
605 | &init_connect_result)) { | |
606 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Initconnection (base mode) failed while checking SRL"); | |
607 | goto out; | |
608 | } | |
609 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { | |
610 | if (TW_CURRENT_DRIVER_SRL > fw_on_ctlr_srl) { | |
611 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x32, "Firmware and driver incompatibility: please upgrade firmware"); | |
612 | } else { | |
613 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x33, "Firmware and driver incompatibility: please upgrade driver"); | |
614 | } | |
615 | goto out; | |
616 | } | |
4039c30e | 617 | tw_dev->tw_compat_info.working_srl = TW_BASE_FW_SRL; |
618 | tw_dev->tw_compat_info.working_branch = TW_BASE_FW_BRANCH; | |
619 | tw_dev->tw_compat_info.working_build = TW_BASE_FW_BUILD; | |
620 | } | |
621 | ||
622 | /* Load rest of compatibility struct */ | |
623 | strncpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION)); | |
624 | tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL; | |
625 | tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH; | |
626 | tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD; | |
627 | tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL; | |
628 | tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH; | |
629 | tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD; | |
630 | tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl; | |
631 | tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch; | |
632 | tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build; | |
633 | ||
1da177e4 LT |
634 | retval = 0; |
635 | out: | |
636 | return retval; | |
637 | } /* End twa_check_srl() */ | |
638 | ||
639 | /* This function handles ioctl for the character device */ | |
f4927c45 | 640 | static long twa_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
1da177e4 | 641 | { |
f4927c45 | 642 | struct inode *inode = file->f_path.dentry->d_inode; |
1da177e4 LT |
643 | long timeout; |
644 | unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; | |
645 | dma_addr_t dma_handle; | |
646 | int request_id = 0; | |
647 | unsigned int sequence_id = 0; | |
648 | unsigned char event_index, start_index; | |
649 | TW_Ioctl_Driver_Command driver_command; | |
650 | TW_Ioctl_Buf_Apache *tw_ioctl; | |
651 | TW_Lock *tw_lock; | |
652 | TW_Command_Full *full_command_packet; | |
653 | TW_Compatibility_Info *tw_compat_info; | |
654 | TW_Event *event; | |
655 | struct timeval current_time; | |
656 | u32 current_time_ms; | |
657 | TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)]; | |
658 | int retval = TW_IOCTL_ERROR_OS_EFAULT; | |
659 | void __user *argp = (void __user *)arg; | |
660 | ||
c45d15d2 | 661 | mutex_lock(&twa_chrdev_mutex); |
f4927c45 | 662 | |
1da177e4 | 663 | /* Only let one of these through at a time */ |
a12e25bd | 664 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { |
1da177e4 LT |
665 | retval = TW_IOCTL_ERROR_OS_EINTR; |
666 | goto out; | |
667 | } | |
668 | ||
669 | /* First copy down the driver command */ | |
670 | if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command))) | |
671 | goto out2; | |
672 | ||
673 | /* Check data buffer size */ | |
4039c30e | 674 | if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) { |
1da177e4 LT |
675 | retval = TW_IOCTL_ERROR_OS_EINVAL; |
676 | goto out2; | |
677 | } | |
678 | ||
679 | /* Hardware can only do multiple of 512 byte transfers */ | |
680 | data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511; | |
681 | ||
682 | /* Now allocate ioctl buf memory */ | |
683 | cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, &dma_handle, GFP_KERNEL); | |
684 | if (!cpu_addr) { | |
685 | retval = TW_IOCTL_ERROR_OS_ENOMEM; | |
686 | goto out2; | |
687 | } | |
688 | ||
689 | tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr; | |
690 | ||
691 | /* Now copy down the entire ioctl */ | |
692 | if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1)) | |
693 | goto out3; | |
694 | ||
695 | /* See which ioctl we are doing */ | |
696 | switch (cmd) { | |
697 | case TW_IOCTL_FIRMWARE_PASS_THROUGH: | |
698 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
699 | twa_get_request_id(tw_dev, &request_id); | |
700 | ||
701 | /* Flag internal command */ | |
702 | tw_dev->srb[request_id] = NULL; | |
703 | ||
704 | /* Flag chrdev ioctl */ | |
705 | tw_dev->chrdev_request_id = request_id; | |
706 | ||
707 | full_command_packet = &tw_ioctl->firmware_command; | |
708 | ||
709 | /* Load request id and sglist for both command types */ | |
0e78d158 | 710 | twa_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted); |
1da177e4 LT |
711 | |
712 | memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full)); | |
713 | ||
714 | /* Now post the command packet to the controller */ | |
715 | twa_post_command_packet(tw_dev, request_id, 1); | |
716 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
717 | ||
718 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | |
719 | ||
720 | /* Now wait for command to complete */ | |
721 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | |
722 | ||
1da177e4 LT |
723 | /* We timed out, and didn't get an interrupt */ |
724 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | |
725 | /* Now we need to reset the board */ | |
726 | printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n", | |
0e78d158 | 727 | tw_dev->host->host_no, TW_DRIVER, 0x37, |
1da177e4 LT |
728 | cmd); |
729 | retval = TW_IOCTL_ERROR_OS_EIO; | |
0e78d158 | 730 | twa_reset_device_extension(tw_dev); |
1da177e4 LT |
731 | goto out3; |
732 | } | |
733 | ||
734 | /* Now copy in the command packet response */ | |
735 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full)); | |
736 | ||
737 | /* Now complete the io */ | |
738 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
739 | tw_dev->posted_request_count--; | |
740 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
741 | twa_free_request_id(tw_dev, request_id); | |
742 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
743 | break; | |
744 | case TW_IOCTL_GET_COMPATIBILITY_INFO: | |
745 | tw_ioctl->driver_command.status = 0; | |
06fe9fb4 | 746 | /* Copy compatibility struct into ioctl data buffer */ |
1da177e4 | 747 | tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer; |
4039c30e | 748 | memcpy(tw_compat_info, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info)); |
1da177e4 LT |
749 | break; |
750 | case TW_IOCTL_GET_LAST_EVENT: | |
751 | if (tw_dev->event_queue_wrapped) { | |
752 | if (tw_dev->aen_clobber) { | |
753 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
754 | tw_dev->aen_clobber = 0; | |
755 | } else | |
756 | tw_ioctl->driver_command.status = 0; | |
757 | } else { | |
758 | if (!tw_dev->error_index) { | |
759 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
760 | break; | |
761 | } | |
762 | tw_ioctl->driver_command.status = 0; | |
763 | } | |
764 | event_index = (tw_dev->error_index - 1 + TW_Q_LENGTH) % TW_Q_LENGTH; | |
765 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
766 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
767 | break; | |
768 | case TW_IOCTL_GET_FIRST_EVENT: | |
769 | if (tw_dev->event_queue_wrapped) { | |
770 | if (tw_dev->aen_clobber) { | |
771 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
772 | tw_dev->aen_clobber = 0; | |
773 | } else | |
774 | tw_ioctl->driver_command.status = 0; | |
775 | event_index = tw_dev->error_index; | |
776 | } else { | |
777 | if (!tw_dev->error_index) { | |
778 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
779 | break; | |
780 | } | |
781 | tw_ioctl->driver_command.status = 0; | |
782 | event_index = 0; | |
783 | } | |
784 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
785 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
786 | break; | |
787 | case TW_IOCTL_GET_NEXT_EVENT: | |
788 | event = (TW_Event *)tw_ioctl->data_buffer; | |
789 | sequence_id = event->sequence_id; | |
790 | tw_ioctl->driver_command.status = 0; | |
791 | ||
792 | if (tw_dev->event_queue_wrapped) { | |
793 | if (tw_dev->aen_clobber) { | |
794 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
795 | tw_dev->aen_clobber = 0; | |
796 | } | |
797 | start_index = tw_dev->error_index; | |
798 | } else { | |
799 | if (!tw_dev->error_index) { | |
800 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
801 | break; | |
802 | } | |
803 | start_index = 0; | |
804 | } | |
805 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id + 1) % TW_Q_LENGTH; | |
806 | ||
807 | if (!(tw_dev->event_queue[event_index]->sequence_id > sequence_id)) { | |
808 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) | |
809 | tw_dev->aen_clobber = 1; | |
810 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
811 | break; | |
812 | } | |
813 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
814 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
815 | break; | |
816 | case TW_IOCTL_GET_PREVIOUS_EVENT: | |
817 | event = (TW_Event *)tw_ioctl->data_buffer; | |
818 | sequence_id = event->sequence_id; | |
819 | tw_ioctl->driver_command.status = 0; | |
820 | ||
821 | if (tw_dev->event_queue_wrapped) { | |
822 | if (tw_dev->aen_clobber) { | |
823 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
824 | tw_dev->aen_clobber = 0; | |
825 | } | |
826 | start_index = tw_dev->error_index; | |
827 | } else { | |
828 | if (!tw_dev->error_index) { | |
829 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
830 | break; | |
831 | } | |
832 | start_index = 0; | |
833 | } | |
834 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id - 1) % TW_Q_LENGTH; | |
835 | ||
836 | if (!(tw_dev->event_queue[event_index]->sequence_id < sequence_id)) { | |
837 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) | |
838 | tw_dev->aen_clobber = 1; | |
839 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
840 | break; | |
841 | } | |
842 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
843 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
844 | break; | |
845 | case TW_IOCTL_GET_LOCK: | |
846 | tw_lock = (TW_Lock *)tw_ioctl->data_buffer; | |
847 | do_gettimeofday(¤t_time); | |
848 | current_time_ms = (current_time.tv_sec * 1000) + (current_time.tv_usec / 1000); | |
849 | ||
850 | if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) || (current_time_ms >= tw_dev->ioctl_msec)) { | |
851 | tw_dev->ioctl_sem_lock = 1; | |
852 | tw_dev->ioctl_msec = current_time_ms + tw_lock->timeout_msec; | |
853 | tw_ioctl->driver_command.status = 0; | |
854 | tw_lock->time_remaining_msec = tw_lock->timeout_msec; | |
855 | } else { | |
856 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED; | |
857 | tw_lock->time_remaining_msec = tw_dev->ioctl_msec - current_time_ms; | |
858 | } | |
859 | break; | |
860 | case TW_IOCTL_RELEASE_LOCK: | |
861 | if (tw_dev->ioctl_sem_lock == 1) { | |
862 | tw_dev->ioctl_sem_lock = 0; | |
863 | tw_ioctl->driver_command.status = 0; | |
864 | } else { | |
865 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED; | |
866 | } | |
867 | break; | |
868 | default: | |
869 | retval = TW_IOCTL_ERROR_OS_ENOTTY; | |
870 | goto out3; | |
871 | } | |
872 | ||
873 | /* Now copy the entire response to userspace */ | |
874 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0) | |
875 | retval = 0; | |
876 | out3: | |
877 | /* Now free ioctl buf memory */ | |
878 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle); | |
879 | out2: | |
a12e25bd | 880 | mutex_unlock(&tw_dev->ioctl_lock); |
1da177e4 | 881 | out: |
c45d15d2 | 882 | mutex_unlock(&twa_chrdev_mutex); |
1da177e4 LT |
883 | return retval; |
884 | } /* End twa_chrdev_ioctl() */ | |
885 | ||
886 | /* This function handles open for the character device */ | |
f2b9857e | 887 | /* NOTE that this function will race with remove. */ |
1da177e4 LT |
888 | static int twa_chrdev_open(struct inode *inode, struct file *file) |
889 | { | |
890 | unsigned int minor_number; | |
891 | int retval = TW_IOCTL_ERROR_OS_ENODEV; | |
892 | ||
893 | minor_number = iminor(inode); | |
894 | if (minor_number >= twa_device_extension_count) | |
895 | goto out; | |
896 | retval = 0; | |
897 | out: | |
898 | return retval; | |
899 | } /* End twa_chrdev_open() */ | |
900 | ||
901 | /* This function will print readable messages from status register errors */ | |
902 | static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value) | |
903 | { | |
904 | int retval = 1; | |
905 | ||
906 | /* Check for various error conditions and handle them appropriately */ | |
907 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { | |
908 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "PCI Parity Error: clearing"); | |
909 | writel(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
910 | } | |
911 | ||
912 | if (status_reg_value & TW_STATUS_PCI_ABORT) { | |
913 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "PCI Abort: clearing"); | |
914 | writel(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); | |
915 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); | |
916 | } | |
917 | ||
918 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { | |
0e78d158 | 919 | if (((tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9650SE) && |
920 | (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9690SA)) || | |
921 | (!test_bit(TW_IN_RESET, &tw_dev->flags))) | |
4039c30e | 922 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Controller Queue Error: clearing"); |
1da177e4 LT |
923 | writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
924 | } | |
925 | ||
1da177e4 LT |
926 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { |
927 | if (tw_dev->reset_print == 0) { | |
928 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing"); | |
929 | tw_dev->reset_print = 1; | |
930 | } | |
931 | goto out; | |
932 | } | |
933 | retval = 0; | |
934 | out: | |
935 | return retval; | |
936 | } /* End twa_decode_bits() */ | |
937 | ||
938 | /* This function will empty the response queue */ | |
939 | static int twa_empty_response_queue(TW_Device_Extension *tw_dev) | |
940 | { | |
941 | u32 status_reg_value, response_que_value; | |
942 | int count = 0, retval = 1; | |
943 | ||
944 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
945 | ||
946 | while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) { | |
947 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
948 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
949 | count++; | |
950 | } | |
951 | if (count == TW_MAX_RESPONSE_DRAIN) | |
952 | goto out; | |
953 | ||
954 | retval = 0; | |
955 | out: | |
956 | return retval; | |
957 | } /* End twa_empty_response_queue() */ | |
958 | ||
49bfd8db | 959 | /* This function will clear the pchip/response queue on 9550SX */ |
960 | static int twa_empty_response_queue_large(TW_Device_Extension *tw_dev) | |
961 | { | |
75913d9b | 962 | u32 response_que_value = 0; |
963 | unsigned long before; | |
964 | int retval = 1; | |
49bfd8db | 965 | |
0e78d158 | 966 | if (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9000) { |
75913d9b | 967 | before = jiffies; |
968 | while ((response_que_value & TW_9550SX_DRAIN_COMPLETED) != TW_9550SX_DRAIN_COMPLETED) { | |
49bfd8db | 969 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR_LARGE(tw_dev)); |
4039c30e | 970 | msleep(1); |
75913d9b | 971 | if (time_after(jiffies, before + HZ * 30)) |
49bfd8db | 972 | goto out; |
49bfd8db | 973 | } |
75913d9b | 974 | /* P-chip settle time */ |
975 | msleep(500); | |
49bfd8db | 976 | retval = 0; |
977 | } else | |
978 | retval = 0; | |
979 | out: | |
980 | return retval; | |
981 | } /* End twa_empty_response_queue_large() */ | |
982 | ||
1da177e4 LT |
983 | /* This function passes sense keys from firmware to scsi layer */ |
984 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host) | |
985 | { | |
986 | TW_Command_Full *full_command_packet; | |
987 | unsigned short error; | |
988 | int retval = 1; | |
989 | char *error_str; | |
990 | ||
991 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
992 | ||
993 | /* Check for embedded error string */ | |
994 | error_str = &(full_command_packet->header.err_specific_desc[strlen(full_command_packet->header.err_specific_desc) + 1]); | |
995 | ||
996 | /* Don't print error for Logical unit not supported during rollcall */ | |
75913d9b | 997 | error = le16_to_cpu(full_command_packet->header.status_block.error); |
1da177e4 LT |
998 | if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE)) { |
999 | if (print_host) | |
1000 | printk(KERN_WARNING "3w-9xxx: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
1001 | tw_dev->host->host_no, | |
1002 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
1003 | full_command_packet->header.status_block.error, | |
1004 | error_str[0] == '\0' ? | |
1005 | twa_string_lookup(twa_error_table, | |
1006 | full_command_packet->header.status_block.error) : error_str, | |
1007 | full_command_packet->header.err_specific_desc); | |
1008 | else | |
1009 | printk(KERN_WARNING "3w-9xxx: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
1010 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
1011 | full_command_packet->header.status_block.error, | |
1012 | error_str[0] == '\0' ? | |
1013 | twa_string_lookup(twa_error_table, | |
1014 | full_command_packet->header.status_block.error) : error_str, | |
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; | |
1025 | out: | |
1026 | return retval; | |
1027 | } /* End twa_fill_sense() */ | |
1028 | ||
1029 | /* This function will free up device extension resources */ | |
1030 | static void twa_free_device_extension(TW_Device_Extension *tw_dev) | |
1031 | { | |
1032 | if (tw_dev->command_packet_virt[0]) | |
1033 | pci_free_consistent(tw_dev->tw_pci_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 | pci_free_consistent(tw_dev->tw_pci_dev, | |
1040 | TW_SECTOR_SIZE*TW_Q_LENGTH, | |
1041 | tw_dev->generic_buffer_virt[0], | |
1042 | tw_dev->generic_buffer_phys[0]); | |
1043 | ||
c9475cb0 | 1044 | kfree(tw_dev->event_queue[0]); |
1da177e4 LT |
1045 | } /* End twa_free_device_extension() */ |
1046 | ||
1047 | /* This function will free a request id */ | |
1048 | static 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 | ||
7f927fcc | 1055 | /* This function will get parameter table entries from the firmware */ |
1da177e4 LT |
1056 | static 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; | |
1da177e4 LT |
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; | |
75913d9b | 1071 | command_packet->byte6_offset.block_count = cpu_to_le16(1); |
1da177e4 LT |
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); | |
75913d9b | 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); | |
1da177e4 | 1079 | |
3dabec71 | 1080 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
75913d9b | 1081 | command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); |
1da177e4 LT |
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 */ | |
1099 | static 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 */ | |
1107 | static 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; | |
75913d9b | 1130 | tw_initconnect->message_credits = cpu_to_le16(message_credits); |
1da177e4 LT |
1131 | tw_initconnect->features = set_features; |
1132 | ||
1133 | /* Turn on 64-bit sgl support if we need to */ | |
1134 | tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0; | |
1135 | ||
75913d9b | 1136 | tw_initconnect->features = cpu_to_le32(tw_initconnect->features); |
1137 | ||
1da177e4 LT |
1138 | if (set_features & TW_EXTENDED_INIT_CONNECT) { |
1139 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED; | |
75913d9b | 1140 | tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl); |
1141 | tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id); | |
1142 | tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch); | |
1143 | tw_initconnect->fw_build = cpu_to_le16(current_fw_build); | |
1da177e4 LT |
1144 | } else |
1145 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE; | |
1146 | ||
1147 | /* Send command packet to the board */ | |
1148 | twa_post_command_packet(tw_dev, request_id, 1); | |
1149 | ||
1150 | /* Poll for completion */ | |
1151 | if (twa_poll_response(tw_dev, request_id, 30)) { | |
1152 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "No valid response during init connection"); | |
1153 | } else { | |
1154 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | |
75913d9b | 1155 | *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl); |
1156 | *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id); | |
1157 | *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch); | |
1158 | *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build); | |
1159 | *init_connect_result = le32_to_cpu(tw_initconnect->result); | |
1da177e4 LT |
1160 | } |
1161 | retval = 0; | |
1162 | } | |
1163 | ||
1164 | tw_dev->posted_request_count--; | |
1165 | tw_dev->state[request_id] = TW_S_INITIAL; | |
1166 | ||
1167 | return retval; | |
1168 | } /* End twa_initconnection() */ | |
1169 | ||
1170 | /* This function will initialize the fields of a device extension */ | |
1171 | static int twa_initialize_device_extension(TW_Device_Extension *tw_dev) | |
1172 | { | |
1173 | int i, retval = 1; | |
1174 | ||
1175 | /* Initialize command packet buffers */ | |
1176 | if (twa_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) { | |
1177 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Command packet memory allocation failed"); | |
1178 | goto out; | |
1179 | } | |
1180 | ||
1181 | /* Initialize generic buffer */ | |
1182 | if (twa_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) { | |
1183 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x17, "Generic memory allocation failed"); | |
1184 | goto out; | |
1185 | } | |
1186 | ||
1187 | /* Allocate event info space */ | |
dd00cc48 | 1188 | tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL); |
1da177e4 LT |
1189 | if (!tw_dev->event_queue[0]) { |
1190 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed"); | |
1191 | goto out; | |
1192 | } | |
1193 | ||
1da177e4 LT |
1194 | |
1195 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1196 | tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event))); | |
1197 | tw_dev->free_queue[i] = i; | |
1198 | tw_dev->state[i] = TW_S_INITIAL; | |
1199 | } | |
1200 | ||
1201 | tw_dev->pending_head = TW_Q_START; | |
1202 | tw_dev->pending_tail = TW_Q_START; | |
1203 | tw_dev->free_head = TW_Q_START; | |
1204 | tw_dev->free_tail = TW_Q_START; | |
1205 | tw_dev->error_sequence_id = 1; | |
1206 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1207 | ||
a12e25bd | 1208 | mutex_init(&tw_dev->ioctl_lock); |
1da177e4 LT |
1209 | init_waitqueue_head(&tw_dev->ioctl_wqueue); |
1210 | ||
1211 | retval = 0; | |
1212 | out: | |
1213 | return retval; | |
1214 | } /* End twa_initialize_device_extension() */ | |
1215 | ||
1216 | /* This function is the interrupt service routine */ | |
7d12e780 | 1217 | static irqreturn_t twa_interrupt(int irq, void *dev_instance) |
1da177e4 LT |
1218 | { |
1219 | int request_id, error = 0; | |
1220 | u32 status_reg_value; | |
1221 | TW_Response_Queue response_que; | |
1222 | TW_Command_Full *full_command_packet; | |
1da177e4 LT |
1223 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; |
1224 | int handled = 0; | |
1225 | ||
1226 | /* Get the per adapter lock */ | |
1227 | spin_lock(tw_dev->host->host_lock); | |
1228 | ||
1229 | /* Read the registers */ | |
1230 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1231 | ||
1232 | /* Check if this is our interrupt, otherwise bail */ | |
1233 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) | |
1234 | goto twa_interrupt_bail; | |
1235 | ||
1236 | handled = 1; | |
1237 | ||
4039c30e | 1238 | /* If we are resetting, bail */ |
1239 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) | |
1240 | goto twa_interrupt_bail; | |
1241 | ||
1da177e4 LT |
1242 | /* Check controller for errors */ |
1243 | if (twa_check_bits(status_reg_value)) { | |
1244 | if (twa_decode_bits(tw_dev, status_reg_value)) { | |
1245 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1246 | goto twa_interrupt_bail; | |
1247 | } | |
1248 | } | |
1249 | ||
1250 | /* Handle host interrupt */ | |
1251 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) | |
1252 | TW_CLEAR_HOST_INTERRUPT(tw_dev); | |
1253 | ||
1254 | /* Handle attention interrupt */ | |
1255 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { | |
1256 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
1257 | if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) { | |
1258 | twa_get_request_id(tw_dev, &request_id); | |
1259 | ||
1260 | error = twa_aen_read_queue(tw_dev, request_id); | |
1261 | if (error) { | |
1262 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1263 | twa_free_request_id(tw_dev, request_id); | |
1264 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
1265 | } | |
1266 | } | |
1267 | } | |
1268 | ||
1269 | /* Handle command interrupt */ | |
1270 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { | |
1271 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1272 | /* Drain as many pending commands as we can */ | |
1273 | while (tw_dev->pending_request_count > 0) { | |
1274 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; | |
1275 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
1276 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x19, "Found request id that wasn't pending"); | |
1277 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1278 | goto twa_interrupt_bail; | |
1279 | } | |
1280 | if (twa_post_command_packet(tw_dev, request_id, 1)==0) { | |
1281 | tw_dev->pending_head = (tw_dev->pending_head + 1) % TW_Q_LENGTH; | |
1282 | tw_dev->pending_request_count--; | |
1283 | } else { | |
1284 | /* If we get here, we will continue re-posting on the next command interrupt */ | |
1285 | break; | |
1286 | } | |
1287 | } | |
1288 | } | |
1289 | ||
1290 | /* Handle response interrupt */ | |
1291 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { | |
1292 | ||
1293 | /* Drain the response queue from the board */ | |
1294 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
1295 | /* Complete the response */ | |
1296 | response_que.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1297 | request_id = TW_RESID_OUT(response_que.response_id); | |
1298 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1299 | error = 0; | |
1da177e4 LT |
1300 | /* Check for command packet errors */ |
1301 | if (full_command_packet->command.newcommand.status != 0) { | |
9bcf0910 | 1302 | if (tw_dev->srb[request_id] != NULL) { |
1da177e4 LT |
1303 | error = twa_fill_sense(tw_dev, request_id, 1, 1); |
1304 | } else { | |
1305 | /* Skip ioctl error prints */ | |
1306 | if (request_id != tw_dev->chrdev_request_id) { | |
1307 | error = twa_fill_sense(tw_dev, request_id, 0, 1); | |
1308 | } | |
1309 | } | |
1310 | } | |
1311 | ||
1312 | /* Check for correct state */ | |
1313 | if (tw_dev->state[request_id] != TW_S_POSTED) { | |
9bcf0910 | 1314 | if (tw_dev->srb[request_id] != NULL) { |
1da177e4 LT |
1315 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted"); |
1316 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1317 | goto twa_interrupt_bail; | |
1318 | } | |
1319 | } | |
1320 | ||
1321 | /* Check for internal command completion */ | |
9bcf0910 | 1322 | if (tw_dev->srb[request_id] == NULL) { |
1da177e4 LT |
1323 | if (request_id != tw_dev->chrdev_request_id) { |
1324 | if (twa_aen_complete(tw_dev, request_id)) | |
1325 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt"); | |
1326 | } else { | |
1327 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1328 | wake_up(&tw_dev->ioctl_wqueue); | |
1329 | } | |
1330 | } else { | |
0debe01d FT |
1331 | struct scsi_cmnd *cmd; |
1332 | ||
1333 | cmd = tw_dev->srb[request_id]; | |
1334 | ||
1da177e4 LT |
1335 | twa_scsiop_execute_scsi_complete(tw_dev, request_id); |
1336 | /* If no error command was a success */ | |
1337 | if (error == 0) { | |
0debe01d | 1338 | cmd->result = (DID_OK << 16); |
1da177e4 LT |
1339 | } |
1340 | ||
1341 | /* If error, command failed */ | |
1342 | if (error == 1) { | |
1343 | /* Ask for a host reset */ | |
0debe01d | 1344 | cmd->result = (DID_OK << 16) | (CHECK_CONDITION << 1); |
1da177e4 LT |
1345 | } |
1346 | ||
1347 | /* Report residual bytes for single sgl */ | |
0debe01d FT |
1348 | if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) { |
1349 | if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id])) | |
1350 | scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length); | |
1da177e4 LT |
1351 | } |
1352 | ||
1353 | /* Now complete the io */ | |
1354 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1355 | twa_free_request_id(tw_dev, request_id); | |
1356 | tw_dev->posted_request_count--; | |
1357 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1358 | twa_unmap_scsi_data(tw_dev, request_id); | |
1359 | } | |
1360 | ||
1361 | /* Check for valid status after each drain */ | |
1362 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1363 | if (twa_check_bits(status_reg_value)) { | |
1364 | if (twa_decode_bits(tw_dev, status_reg_value)) { | |
1365 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1366 | goto twa_interrupt_bail; | |
1367 | } | |
1368 | } | |
1369 | } | |
1370 | } | |
1371 | ||
1372 | twa_interrupt_bail: | |
1373 | spin_unlock(tw_dev->host->host_lock); | |
1374 | return IRQ_RETVAL(handled); | |
1375 | } /* End twa_interrupt() */ | |
1376 | ||
1377 | /* This function will load the request id and various sgls for ioctls */ | |
0e78d158 | 1378 | static void twa_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length) |
1da177e4 LT |
1379 | { |
1380 | TW_Command *oldcommand; | |
1381 | TW_Command_Apache *newcommand; | |
1382 | TW_SG_Entry *sgl; | |
0e78d158 | 1383 | unsigned int pae = 0; |
1384 | ||
1385 | if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4)) | |
1386 | pae = 1; | |
1da177e4 LT |
1387 | |
1388 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
1389 | newcommand = &full_command_packet->command.newcommand; | |
4039c30e | 1390 | newcommand->request_id__lunl = |
1391 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id)); | |
53ca3535 | 1392 | if (length) { |
1393 | newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); | |
1394 | newcommand->sg_list[0].length = cpu_to_le32(length); | |
1395 | } | |
1da177e4 | 1396 | newcommand->sgl_entries__lunh = |
53ca3535 | 1397 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0)); |
1da177e4 LT |
1398 | } else { |
1399 | oldcommand = &full_command_packet->command.oldcommand; | |
1400 | oldcommand->request_id = request_id; | |
1401 | ||
1402 | if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) { | |
1403 | /* Load the sg list */ | |
0e78d158 | 1404 | if (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA) |
1405 | sgl = (TW_SG_Entry *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry)/4) + pae); | |
1406 | else | |
1407 | sgl = (TW_SG_Entry *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset)); | |
75913d9b | 1408 | sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); |
1409 | sgl->length = cpu_to_le32(length); | |
1da177e4 | 1410 | |
0e78d158 | 1411 | oldcommand->size += pae; |
1da177e4 LT |
1412 | } |
1413 | } | |
1414 | } /* End twa_load_sgl() */ | |
1415 | ||
1416 | /* This function will perform a pci-dma mapping for a scatter gather list */ | |
1417 | static int twa_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id) | |
1418 | { | |
1419 | int use_sg; | |
1420 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1da177e4 | 1421 | |
0debe01d FT |
1422 | use_sg = scsi_dma_map(cmd); |
1423 | if (!use_sg) | |
1424 | return 0; | |
1425 | else if (use_sg < 0) { | |
1da177e4 | 1426 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list"); |
0debe01d | 1427 | return 0; |
1da177e4 LT |
1428 | } |
1429 | ||
1430 | cmd->SCp.phase = TW_PHASE_SGLIST; | |
1431 | cmd->SCp.have_data_in = use_sg; | |
1da177e4 | 1432 | |
0debe01d FT |
1433 | return use_sg; |
1434 | } /* End twa_map_scsi_sg_data() */ | |
1da177e4 LT |
1435 | |
1436 | /* This function will poll for a response interrupt of a request */ | |
1437 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) | |
1438 | { | |
1439 | int retval = 1, found = 0, response_request_id; | |
1440 | TW_Response_Queue response_queue; | |
1441 | TW_Command_Full *full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1442 | ||
1443 | if (twa_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds) == 0) { | |
1444 | response_queue.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1445 | response_request_id = TW_RESID_OUT(response_queue.response_id); | |
1446 | if (request_id != response_request_id) { | |
1447 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "Found unexpected request id while polling for response"); | |
1448 | goto out; | |
1449 | } | |
1450 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
1451 | if (full_command_packet->command.newcommand.status != 0) { | |
1452 | /* bad response */ | |
1453 | twa_fill_sense(tw_dev, request_id, 0, 0); | |
1454 | goto out; | |
1455 | } | |
1456 | found = 1; | |
1457 | } else { | |
1458 | if (full_command_packet->command.oldcommand.status != 0) { | |
1459 | /* bad response */ | |
1460 | twa_fill_sense(tw_dev, request_id, 0, 0); | |
1461 | goto out; | |
1462 | } | |
1463 | found = 1; | |
1464 | } | |
1465 | } | |
1466 | ||
1467 | if (found) | |
1468 | retval = 0; | |
1469 | out: | |
1470 | return retval; | |
1471 | } /* End twa_poll_response() */ | |
1472 | ||
1473 | /* This function will poll the status register for a flag */ | |
1474 | static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
1475 | { | |
1476 | u32 status_reg_value; | |
1477 | unsigned long before; | |
1478 | int retval = 1; | |
1479 | ||
1480 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1481 | before = jiffies; | |
1482 | ||
1483 | if (twa_check_bits(status_reg_value)) | |
1484 | twa_decode_bits(tw_dev, status_reg_value); | |
1485 | ||
1486 | while ((status_reg_value & flag) != flag) { | |
1487 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1488 | ||
1489 | if (twa_check_bits(status_reg_value)) | |
1490 | twa_decode_bits(tw_dev, status_reg_value); | |
1491 | ||
1492 | if (time_after(jiffies, before + HZ * seconds)) | |
1493 | goto out; | |
1494 | ||
1495 | msleep(50); | |
1496 | } | |
1497 | retval = 0; | |
1498 | out: | |
1499 | return retval; | |
1500 | } /* End twa_poll_status() */ | |
1501 | ||
1502 | /* This function will poll the status register for disappearance of a flag */ | |
1503 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
1504 | { | |
1505 | u32 status_reg_value; | |
1506 | unsigned long before; | |
1507 | int retval = 1; | |
1508 | ||
1509 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1510 | before = jiffies; | |
1511 | ||
1512 | if (twa_check_bits(status_reg_value)) | |
1513 | twa_decode_bits(tw_dev, status_reg_value); | |
1514 | ||
1515 | while ((status_reg_value & flag) != 0) { | |
1516 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1517 | if (twa_check_bits(status_reg_value)) | |
1518 | twa_decode_bits(tw_dev, status_reg_value); | |
1519 | ||
1520 | if (time_after(jiffies, before + HZ * seconds)) | |
1521 | goto out; | |
1522 | ||
1523 | msleep(50); | |
1524 | } | |
1525 | retval = 0; | |
1526 | out: | |
1527 | return retval; | |
1528 | } /* End twa_poll_status_gone() */ | |
1529 | ||
1530 | /* This function will attempt to post a command packet to the board */ | |
1531 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal) | |
1532 | { | |
1533 | u32 status_reg_value; | |
1534 | dma_addr_t command_que_value; | |
1535 | int retval = 1; | |
1536 | ||
1537 | command_que_value = tw_dev->command_packet_phys[request_id]; | |
4039c30e | 1538 | |
1539 | /* For 9650SE write low 4 bytes first */ | |
0e78d158 | 1540 | if ((tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9650SE) || |
1541 | (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)) { | |
4039c30e | 1542 | command_que_value += TW_COMMAND_OFFSET; |
1543 | writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR_LARGE(tw_dev)); | |
1544 | } | |
1545 | ||
1da177e4 LT |
1546 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
1547 | ||
1548 | if (twa_check_bits(status_reg_value)) | |
1549 | twa_decode_bits(tw_dev, status_reg_value); | |
1550 | ||
1551 | if (((tw_dev->pending_request_count > 0) && (tw_dev->state[request_id] != TW_S_PENDING)) || (status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL)) { | |
1552 | ||
1553 | /* Only pend internal driver commands */ | |
1554 | if (!internal) { | |
1555 | retval = SCSI_MLQUEUE_HOST_BUSY; | |
1556 | goto out; | |
1557 | } | |
1558 | ||
1559 | /* Couldn't post the command packet, so we do it later */ | |
1560 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
1561 | tw_dev->state[request_id] = TW_S_PENDING; | |
1562 | tw_dev->pending_request_count++; | |
1563 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { | |
1564 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; | |
1565 | } | |
1566 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; | |
1567 | tw_dev->pending_tail = (tw_dev->pending_tail + 1) % TW_Q_LENGTH; | |
1568 | } | |
1569 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); | |
1570 | goto out; | |
1571 | } else { | |
0e78d158 | 1572 | if ((tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9650SE) || |
1573 | (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)) { | |
4039c30e | 1574 | /* Now write upper 4 bytes */ |
1575 | writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR_LARGE(tw_dev) + 0x4); | |
1da177e4 | 1576 | } else { |
4039c30e | 1577 | if (sizeof(dma_addr_t) > 4) { |
1578 | command_que_value += TW_COMMAND_OFFSET; | |
1579 | writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1580 | writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR(tw_dev) + 0x4); | |
1581 | } else { | |
1582 | writel(TW_COMMAND_OFFSET + command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1583 | } | |
1da177e4 LT |
1584 | } |
1585 | tw_dev->state[request_id] = TW_S_POSTED; | |
1586 | tw_dev->posted_request_count++; | |
1587 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { | |
1588 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | |
1589 | } | |
1590 | } | |
1591 | retval = 0; | |
1592 | out: | |
1593 | return retval; | |
1594 | } /* End twa_post_command_packet() */ | |
1595 | ||
1596 | /* This function will reset a device extension */ | |
0e78d158 | 1597 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev) |
1da177e4 LT |
1598 | { |
1599 | int i = 0; | |
1600 | int retval = 1; | |
1601 | unsigned long flags = 0; | |
1602 | ||
1603 | set_bit(TW_IN_RESET, &tw_dev->flags); | |
1604 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1605 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1606 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1607 | ||
1608 | /* Abort all requests that are in progress */ | |
1609 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1610 | if ((tw_dev->state[i] != TW_S_FINISHED) && | |
1611 | (tw_dev->state[i] != TW_S_INITIAL) && | |
1612 | (tw_dev->state[i] != TW_S_COMPLETED)) { | |
1613 | if (tw_dev->srb[i]) { | |
1614 | tw_dev->srb[i]->result = (DID_RESET << 16); | |
1615 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); | |
1616 | twa_unmap_scsi_data(tw_dev, i); | |
1617 | } | |
1618 | } | |
1619 | } | |
1620 | ||
1621 | /* Reset queues and counts */ | |
1622 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1623 | tw_dev->free_queue[i] = i; | |
1624 | tw_dev->state[i] = TW_S_INITIAL; | |
1625 | } | |
1626 | tw_dev->free_head = TW_Q_START; | |
1627 | tw_dev->free_tail = TW_Q_START; | |
1628 | tw_dev->posted_request_count = 0; | |
1629 | tw_dev->pending_request_count = 0; | |
1630 | tw_dev->pending_head = TW_Q_START; | |
1631 | tw_dev->pending_tail = TW_Q_START; | |
1632 | tw_dev->reset_print = 0; | |
1633 | ||
1634 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1635 | ||
1636 | if (twa_reset_sequence(tw_dev, 1)) | |
1637 | goto out; | |
1638 | ||
1639 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
4039c30e | 1640 | clear_bit(TW_IN_RESET, &tw_dev->flags); |
1641 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1da177e4 | 1642 | |
1da177e4 LT |
1643 | retval = 0; |
1644 | out: | |
1645 | return retval; | |
1646 | } /* End twa_reset_device_extension() */ | |
1647 | ||
1648 | /* This function will reset a controller */ | |
1649 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset) | |
1650 | { | |
1651 | int tries = 0, retval = 1, flashed = 0, do_soft_reset = soft_reset; | |
1652 | ||
1653 | while (tries < TW_MAX_RESET_TRIES) { | |
49bfd8db | 1654 | if (do_soft_reset) { |
1da177e4 | 1655 | TW_SOFT_RESET(tw_dev); |
49bfd8db | 1656 | /* Clear pchip/response queue on 9550SX */ |
1657 | if (twa_empty_response_queue_large(tw_dev)) { | |
1658 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x36, "Response queue (large) empty failed during reset sequence"); | |
1659 | do_soft_reset = 1; | |
1660 | tries++; | |
1661 | continue; | |
1662 | } | |
1663 | } | |
1da177e4 LT |
1664 | |
1665 | /* Make sure controller is in a good state */ | |
1666 | if (twa_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY | (do_soft_reset == 1 ? TW_STATUS_ATTENTION_INTERRUPT : 0), 60)) { | |
1667 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Microcontroller not ready during reset sequence"); | |
1668 | do_soft_reset = 1; | |
1669 | tries++; | |
1670 | continue; | |
1671 | } | |
1672 | ||
1673 | /* Empty response queue */ | |
1674 | if (twa_empty_response_queue(tw_dev)) { | |
1675 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Response queue empty failed during reset sequence"); | |
1676 | do_soft_reset = 1; | |
1677 | tries++; | |
1678 | continue; | |
1679 | } | |
1680 | ||
1681 | flashed = 0; | |
1682 | ||
1683 | /* Check for compatibility/flash */ | |
1684 | if (twa_check_srl(tw_dev, &flashed)) { | |
1685 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Compatibility check failed during reset sequence"); | |
1686 | do_soft_reset = 1; | |
1687 | tries++; | |
1688 | continue; | |
1689 | } else { | |
1690 | if (flashed) { | |
1691 | tries++; | |
1692 | continue; | |
1693 | } | |
1694 | } | |
1695 | ||
1696 | /* Drain the AEN queue */ | |
1697 | if (twa_aen_drain_queue(tw_dev, soft_reset)) { | |
1698 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x22, "AEN drain failed during reset sequence"); | |
1699 | do_soft_reset = 1; | |
1700 | tries++; | |
1701 | continue; | |
1702 | } | |
1703 | ||
1704 | /* If we got here, controller is in a good state */ | |
1705 | retval = 0; | |
1706 | goto out; | |
1707 | } | |
1708 | out: | |
1709 | return retval; | |
1710 | } /* End twa_reset_sequence() */ | |
1711 | ||
1712 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | |
1713 | static int twa_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) | |
1714 | { | |
1715 | int heads, sectors, cylinders; | |
1716 | TW_Device_Extension *tw_dev; | |
1717 | ||
1718 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | |
1719 | ||
1720 | if (capacity >= 0x200000) { | |
1721 | heads = 255; | |
1722 | sectors = 63; | |
1723 | cylinders = sector_div(capacity, heads * sectors); | |
1724 | } else { | |
1725 | heads = 64; | |
1726 | sectors = 32; | |
1727 | cylinders = sector_div(capacity, heads * sectors); | |
1728 | } | |
1729 | ||
1730 | geom[0] = heads; | |
1731 | geom[1] = sectors; | |
1732 | geom[2] = cylinders; | |
1733 | ||
1734 | return 0; | |
1735 | } /* End twa_scsi_biosparam() */ | |
1736 | ||
1737 | /* This is the new scsi eh reset function */ | |
1738 | static int twa_scsi_eh_reset(struct scsi_cmnd *SCpnt) | |
1739 | { | |
1740 | TW_Device_Extension *tw_dev = NULL; | |
1741 | int retval = FAILED; | |
1742 | ||
1743 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1744 | ||
1da177e4 LT |
1745 | tw_dev->num_resets++; |
1746 | ||
017560fc JG |
1747 | sdev_printk(KERN_WARNING, SCpnt->device, |
1748 | "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n", | |
1749 | TW_DRIVER, 0x2c, SCpnt->cmnd[0]); | |
1da177e4 | 1750 | |
4039c30e | 1751 | /* Make sure we are not issuing an ioctl or resetting from ioctl */ |
1752 | mutex_lock(&tw_dev->ioctl_lock); | |
1753 | ||
1da177e4 | 1754 | /* Now reset the card and some of the device extension data */ |
0e78d158 | 1755 | if (twa_reset_device_extension(tw_dev)) { |
1da177e4 LT |
1756 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2b, "Controller reset failed during scsi host reset"); |
1757 | goto out; | |
1758 | } | |
1759 | ||
1760 | retval = SUCCESS; | |
1761 | out: | |
4039c30e | 1762 | mutex_unlock(&tw_dev->ioctl_lock); |
1da177e4 LT |
1763 | return retval; |
1764 | } /* End twa_scsi_eh_reset() */ | |
1765 | ||
1766 | /* This is the main scsi queue function to handle scsi opcodes */ | |
1767 | static int twa_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) | |
1768 | { | |
1769 | int request_id, retval; | |
1770 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1771 | ||
4039c30e | 1772 | /* If we are resetting due to timed out ioctl, report as busy */ |
1773 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) { | |
1774 | retval = SCSI_MLQUEUE_HOST_BUSY; | |
1775 | goto out; | |
1776 | } | |
1777 | ||
1da177e4 | 1778 | /* Check if this FW supports luns */ |
4039c30e | 1779 | if ((SCpnt->device->lun != 0) && (tw_dev->tw_compat_info.working_srl < TW_FW_SRL_LUNS_SUPPORTED)) { |
1da177e4 LT |
1780 | SCpnt->result = (DID_BAD_TARGET << 16); |
1781 | done(SCpnt); | |
1782 | retval = 0; | |
1783 | goto out; | |
1784 | } | |
1785 | ||
1786 | /* Save done function into scsi_cmnd struct */ | |
1787 | SCpnt->scsi_done = done; | |
1788 | ||
1789 | /* Get a free request id */ | |
1790 | twa_get_request_id(tw_dev, &request_id); | |
1791 | ||
1792 | /* Save the scsi command for use by the ISR */ | |
1793 | tw_dev->srb[request_id] = SCpnt; | |
1794 | ||
1795 | /* Initialize phase to zero */ | |
1796 | SCpnt->SCp.phase = TW_PHASE_INITIAL; | |
1797 | ||
1798 | retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); | |
1799 | switch (retval) { | |
1800 | case SCSI_MLQUEUE_HOST_BUSY: | |
1801 | twa_free_request_id(tw_dev, request_id); | |
1802 | break; | |
1803 | case 1: | |
1804 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1805 | twa_free_request_id(tw_dev, request_id); | |
1806 | SCpnt->result = (DID_ERROR << 16); | |
1807 | done(SCpnt); | |
1808 | retval = 0; | |
1809 | } | |
1810 | out: | |
1811 | return retval; | |
1812 | } /* End twa_scsi_queue() */ | |
1813 | ||
1814 | /* This function hands scsi cdb's to the firmware */ | |
1815 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg) | |
1816 | { | |
1817 | TW_Command_Full *full_command_packet; | |
1818 | TW_Command_Apache *command_packet; | |
1819 | u32 num_sectors = 0x0; | |
1820 | int i, sg_count; | |
1821 | struct scsi_cmnd *srb = NULL; | |
0debe01d | 1822 | struct scatterlist *sglist = NULL, *sg; |
1da177e4 LT |
1823 | int retval = 1; |
1824 | ||
1825 | if (tw_dev->srb[request_id]) { | |
1da177e4 | 1826 | srb = tw_dev->srb[request_id]; |
0debe01d FT |
1827 | if (scsi_sglist(srb)) |
1828 | sglist = scsi_sglist(srb); | |
1da177e4 LT |
1829 | } |
1830 | ||
1831 | /* Initialize command packet */ | |
1832 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1833 | full_command_packet->header.header_desc.size_header = 128; | |
1834 | full_command_packet->header.status_block.error = 0; | |
1835 | full_command_packet->header.status_block.severity__reserved = 0; | |
1836 | ||
1837 | command_packet = &full_command_packet->command.newcommand; | |
1838 | command_packet->status = 0; | |
1839 | command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI); | |
1840 | ||
1841 | /* We forced 16 byte cdb use earlier */ | |
1842 | if (!cdb) | |
1843 | memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN); | |
1844 | else | |
1845 | memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN); | |
1846 | ||
1847 | if (srb) { | |
1848 | command_packet->unit = srb->device->id; | |
1849 | command_packet->request_id__lunl = | |
75913d9b | 1850 | cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id)); |
1da177e4 LT |
1851 | } else { |
1852 | command_packet->request_id__lunl = | |
75913d9b | 1853 | cpu_to_le16(TW_REQ_LUN_IN(0, request_id)); |
1da177e4 LT |
1854 | command_packet->unit = 0; |
1855 | } | |
1856 | ||
1857 | command_packet->sgl_offset = 16; | |
1858 | ||
1859 | if (!sglistarg) { | |
1860 | /* Map sglist from scsi layer to cmd packet */ | |
1da177e4 | 1861 | |
0debe01d FT |
1862 | if (scsi_sg_count(srb)) { |
1863 | if ((scsi_sg_count(srb) == 1) && | |
1864 | (scsi_bufflen(srb) < TW_MIN_SGL_LENGTH)) { | |
035f5e06 FT |
1865 | if (srb->sc_data_direction == DMA_TO_DEVICE || |
1866 | srb->sc_data_direction == DMA_BIDIRECTIONAL) | |
1867 | scsi_sg_copy_to_buffer(srb, | |
1868 | tw_dev->generic_buffer_virt[request_id], | |
1869 | TW_SECTOR_SIZE); | |
75913d9b | 1870 | command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
1871 | command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH); | |
1da177e4 LT |
1872 | } else { |
1873 | sg_count = twa_map_scsi_sg_data(tw_dev, request_id); | |
1874 | if (sg_count == 0) | |
1875 | goto out; | |
1876 | ||
0debe01d FT |
1877 | scsi_for_each_sg(srb, sg, sg_count, i) { |
1878 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg)); | |
1879 | command_packet->sg_list[i].length = cpu_to_le32(sg_dma_len(sg)); | |
75913d9b | 1880 | if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { |
1da177e4 LT |
1881 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi"); |
1882 | goto out; | |
1883 | } | |
1884 | } | |
1885 | } | |
0debe01d | 1886 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id]))); |
1da177e4 LT |
1887 | } |
1888 | } else { | |
1889 | /* Internal cdb post */ | |
1890 | for (i = 0; i < use_sg; i++) { | |
75913d9b | 1891 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address); |
1892 | command_packet->sg_list[i].length = cpu_to_le32(sglistarg[i].length); | |
1893 | if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { | |
1da177e4 LT |
1894 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2f, "Found unaligned sgl address during internal post"); |
1895 | goto out; | |
1896 | } | |
1897 | } | |
75913d9b | 1898 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg)); |
1da177e4 LT |
1899 | } |
1900 | ||
1901 | if (srb) { | |
1902 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) | |
1903 | num_sectors = (u32)srb->cmnd[4]; | |
1904 | ||
1905 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) | |
1906 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); | |
1907 | } | |
1908 | ||
1909 | /* Update sector statistic */ | |
1910 | tw_dev->sector_count = num_sectors; | |
1911 | if (tw_dev->sector_count > tw_dev->max_sector_count) | |
1912 | tw_dev->max_sector_count = tw_dev->sector_count; | |
1913 | ||
1914 | /* Update SG statistics */ | |
1915 | if (srb) { | |
0debe01d | 1916 | tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]); |
1da177e4 LT |
1917 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) |
1918 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | |
1919 | } | |
1920 | ||
1921 | /* Now post the command to the board */ | |
1922 | if (srb) { | |
1923 | retval = twa_post_command_packet(tw_dev, request_id, 0); | |
1924 | } else { | |
1925 | twa_post_command_packet(tw_dev, request_id, 1); | |
1926 | retval = 0; | |
1927 | } | |
1928 | out: | |
1929 | return retval; | |
1930 | } /* End twa_scsiop_execute_scsi() */ | |
1931 | ||
1932 | /* This function completes an execute scsi operation */ | |
1933 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id) | |
1934 | { | |
0debe01d | 1935 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; |
0debe01d FT |
1936 | |
1937 | if (scsi_bufflen(cmd) < TW_MIN_SGL_LENGTH && | |
1938 | (cmd->sc_data_direction == DMA_FROM_DEVICE || | |
1939 | cmd->sc_data_direction == DMA_BIDIRECTIONAL)) { | |
b1192d5e | 1940 | if (scsi_sg_count(cmd) == 1) { |
035f5e06 FT |
1941 | void *buf = tw_dev->generic_buffer_virt[request_id]; |
1942 | ||
035f5e06 | 1943 | scsi_sg_copy_from_buffer(cmd, buf, TW_SECTOR_SIZE); |
d327d082 | 1944 | } |
1da177e4 LT |
1945 | } |
1946 | } /* End twa_scsiop_execute_scsi_complete() */ | |
1947 | ||
1948 | /* This function tells the controller to shut down */ | |
1949 | static void __twa_shutdown(TW_Device_Extension *tw_dev) | |
1950 | { | |
1951 | /* Disable interrupts */ | |
1952 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1953 | ||
4039c30e | 1954 | /* Free up the IRQ */ |
1955 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
1956 | ||
1da177e4 LT |
1957 | printk(KERN_WARNING "3w-9xxx: Shutting down host %d.\n", tw_dev->host->host_no); |
1958 | ||
1959 | /* Tell the card we are shutting down */ | |
1960 | if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | |
1961 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x31, "Connection shutdown failed"); | |
1962 | } else { | |
1963 | printk(KERN_WARNING "3w-9xxx: Shutdown complete.\n"); | |
1964 | } | |
1965 | ||
1966 | /* Clear all interrupts just before exit */ | |
1967 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1968 | } /* End __twa_shutdown() */ | |
1969 | ||
1970 | /* Wrapper for __twa_shutdown */ | |
d18c3db5 | 1971 | static void twa_shutdown(struct pci_dev *pdev) |
1da177e4 | 1972 | { |
d18c3db5 | 1973 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
1da177e4 LT |
1974 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
1975 | ||
1976 | __twa_shutdown(tw_dev); | |
1977 | } /* End twa_shutdown() */ | |
1978 | ||
1979 | /* This function will look up a string */ | |
1980 | static char *twa_string_lookup(twa_message_type *table, unsigned int code) | |
1981 | { | |
1982 | int index; | |
1983 | ||
1984 | for (index = 0; ((code != table[index].code) && | |
1985 | (table[index].text != (char *)0)); index++); | |
1986 | return(table[index].text); | |
1987 | } /* End twa_string_lookup() */ | |
1988 | ||
1989 | /* This function will perform a pci-dma unmap */ | |
1990 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) | |
1991 | { | |
1992 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1da177e4 | 1993 | |
8454e988 | 1994 | if (cmd->SCp.phase == TW_PHASE_SGLIST) |
1995 | scsi_dma_unmap(cmd); | |
1da177e4 LT |
1996 | } /* End twa_unmap_scsi_data() */ |
1997 | ||
4deedd84 | 1998 | /* This function gets called when a disk is coming on-line */ |
1999 | static int twa_slave_configure(struct scsi_device *sdev) | |
2000 | { | |
2001 | /* Force 60 second timeout */ | |
2002 | blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); | |
2003 | ||
2004 | return 0; | |
2005 | } /* End twa_slave_configure() */ | |
2006 | ||
1da177e4 LT |
2007 | /* scsi_host_template initializer */ |
2008 | static struct scsi_host_template driver_template = { | |
2009 | .module = THIS_MODULE, | |
2010 | .name = "3ware 9000 Storage Controller", | |
2011 | .queuecommand = twa_scsi_queue, | |
2012 | .eh_host_reset_handler = twa_scsi_eh_reset, | |
2013 | .bios_param = twa_scsi_biosparam, | |
2014 | .change_queue_depth = twa_change_queue_depth, | |
2015 | .can_queue = TW_Q_LENGTH-2, | |
4deedd84 | 2016 | .slave_configure = twa_slave_configure, |
1da177e4 LT |
2017 | .this_id = -1, |
2018 | .sg_tablesize = TW_APACHE_MAX_SGL_LENGTH, | |
2019 | .max_sectors = TW_MAX_SECTORS, | |
2020 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | |
2021 | .use_clustering = ENABLE_CLUSTERING, | |
2022 | .shost_attrs = twa_host_attrs, | |
2023 | .emulated = 1 | |
2024 | }; | |
2025 | ||
2026 | /* This function will probe and initialize a card */ | |
2027 | static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) | |
2028 | { | |
2029 | struct Scsi_Host *host = NULL; | |
2030 | TW_Device_Extension *tw_dev; | |
3dabec71 | 2031 | unsigned long mem_addr, mem_len; |
1da177e4 LT |
2032 | int retval = -ENODEV; |
2033 | ||
2034 | retval = pci_enable_device(pdev); | |
2035 | if (retval) { | |
2036 | TW_PRINTK(host, TW_DRIVER, 0x34, "Failed to enable pci device"); | |
2037 | goto out_disable_device; | |
2038 | } | |
2039 | ||
2040 | pci_set_master(pdev); | |
1e6c38ce | 2041 | pci_try_set_mwi(pdev); |
1da177e4 | 2042 | |
6a35528a YH |
2043 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) |
2044 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) | |
284901a9 YH |
2045 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) |
2046 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { | |
0e78d158 | 2047 | TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask"); |
2048 | retval = -ENODEV; | |
2049 | goto out_disable_device; | |
2050 | } | |
1da177e4 LT |
2051 | |
2052 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | |
2053 | if (!host) { | |
2054 | TW_PRINTK(host, TW_DRIVER, 0x24, "Failed to allocate memory for device extension"); | |
2055 | retval = -ENOMEM; | |
2056 | goto out_disable_device; | |
2057 | } | |
2058 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
2059 | ||
1da177e4 LT |
2060 | /* Save values to device extension */ |
2061 | tw_dev->host = host; | |
2062 | tw_dev->tw_pci_dev = pdev; | |
2063 | ||
2064 | if (twa_initialize_device_extension(tw_dev)) { | |
2065 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension"); | |
2066 | goto out_free_device_extension; | |
2067 | } | |
2068 | ||
2069 | /* Request IO regions */ | |
2070 | retval = pci_request_regions(pdev, "3w-9xxx"); | |
2071 | if (retval) { | |
2072 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Failed to get mem region"); | |
2073 | goto out_free_device_extension; | |
2074 | } | |
2075 | ||
3dabec71 | 2076 | if (pdev->device == PCI_DEVICE_ID_3WARE_9000) { |
49bfd8db | 2077 | mem_addr = pci_resource_start(pdev, 1); |
3dabec71 | 2078 | mem_len = pci_resource_len(pdev, 1); |
2079 | } else { | |
49bfd8db | 2080 | mem_addr = pci_resource_start(pdev, 2); |
3dabec71 | 2081 | mem_len = pci_resource_len(pdev, 2); |
2082 | } | |
1da177e4 LT |
2083 | |
2084 | /* Save base address */ | |
3dabec71 | 2085 | tw_dev->base_addr = ioremap(mem_addr, mem_len); |
1da177e4 LT |
2086 | if (!tw_dev->base_addr) { |
2087 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap"); | |
2088 | goto out_release_mem_region; | |
2089 | } | |
2090 | ||
2091 | /* Disable interrupts on the card */ | |
2092 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2093 | ||
2094 | /* Initialize the card */ | |
2095 | if (twa_reset_sequence(tw_dev, 0)) | |
4039c30e | 2096 | goto out_iounmap; |
1da177e4 LT |
2097 | |
2098 | /* Set host specific parameters */ | |
0e78d158 | 2099 | if ((pdev->device == PCI_DEVICE_ID_3WARE_9650SE) || |
2100 | (pdev->device == PCI_DEVICE_ID_3WARE_9690SA)) | |
4039c30e | 2101 | host->max_id = TW_MAX_UNITS_9650SE; |
2102 | else | |
2103 | host->max_id = TW_MAX_UNITS; | |
2104 | ||
1da177e4 LT |
2105 | host->max_cmd_len = TW_MAX_CDB_LEN; |
2106 | ||
2107 | /* Channels aren't supported by adapter */ | |
4039c30e | 2108 | host->max_lun = TW_MAX_LUNS(tw_dev->tw_compat_info.working_srl); |
1da177e4 LT |
2109 | host->max_channel = 0; |
2110 | ||
2111 | /* Register the card with the kernel SCSI layer */ | |
2112 | retval = scsi_add_host(host, &pdev->dev); | |
2113 | if (retval) { | |
2114 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x27, "scsi add host failed"); | |
4039c30e | 2115 | goto out_iounmap; |
1da177e4 LT |
2116 | } |
2117 | ||
2118 | pci_set_drvdata(pdev, host); | |
2119 | ||
3dabec71 | 2120 | printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%lx, IRQ: %d.\n", |
1da177e4 LT |
2121 | host->host_no, mem_addr, pdev->irq); |
2122 | printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n", | |
2123 | host->host_no, | |
2124 | (char *)twa_get_param(tw_dev, 0, TW_VERSION_TABLE, | |
2125 | TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH), | |
2126 | (char *)twa_get_param(tw_dev, 1, TW_VERSION_TABLE, | |
2127 | TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH), | |
75913d9b | 2128 | le32_to_cpu(*(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE, |
2129 | TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH))); | |
1da177e4 | 2130 | |
3dabec71 | 2131 | /* Try to enable MSI */ |
2132 | if (use_msi && (pdev->device != PCI_DEVICE_ID_3WARE_9000) && | |
2133 | !pci_enable_msi(pdev)) | |
2134 | set_bit(TW_USING_MSI, &tw_dev->flags); | |
2135 | ||
1da177e4 | 2136 | /* Now setup the interrupt handler */ |
1d6f359a | 2137 | retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev); |
1da177e4 LT |
2138 | if (retval) { |
2139 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x30, "Error requesting IRQ"); | |
2140 | goto out_remove_host; | |
2141 | } | |
2142 | ||
2143 | twa_device_extension_list[twa_device_extension_count] = tw_dev; | |
2144 | twa_device_extension_count++; | |
2145 | ||
2146 | /* Re-enable interrupts on the card */ | |
2147 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2148 | ||
2149 | /* Finally, scan the host */ | |
2150 | scsi_scan_host(host); | |
2151 | ||
2152 | if (twa_major == -1) { | |
2153 | if ((twa_major = register_chrdev (0, "twa", &twa_fops)) < 0) | |
2154 | TW_PRINTK(host, TW_DRIVER, 0x29, "Failed to register character device"); | |
2155 | } | |
2156 | return 0; | |
2157 | ||
2158 | out_remove_host: | |
3dabec71 | 2159 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) |
2160 | pci_disable_msi(pdev); | |
1da177e4 | 2161 | scsi_remove_host(host); |
4039c30e | 2162 | out_iounmap: |
2163 | iounmap(tw_dev->base_addr); | |
1da177e4 LT |
2164 | out_release_mem_region: |
2165 | pci_release_regions(pdev); | |
2166 | out_free_device_extension: | |
2167 | twa_free_device_extension(tw_dev); | |
2168 | scsi_host_put(host); | |
2169 | out_disable_device: | |
2170 | pci_disable_device(pdev); | |
2171 | ||
2172 | return retval; | |
2173 | } /* End twa_probe() */ | |
2174 | ||
2175 | /* This function is called to remove a device */ | |
2176 | static void twa_remove(struct pci_dev *pdev) | |
2177 | { | |
2178 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2179 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2180 | ||
2181 | scsi_remove_host(tw_dev->host); | |
2182 | ||
2183 | /* Unregister character device */ | |
2184 | if (twa_major >= 0) { | |
2185 | unregister_chrdev(twa_major, "twa"); | |
2186 | twa_major = -1; | |
2187 | } | |
2188 | ||
1da177e4 LT |
2189 | /* Shutdown the card */ |
2190 | __twa_shutdown(tw_dev); | |
2191 | ||
3dabec71 | 2192 | /* Disable MSI if enabled */ |
2193 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
2194 | pci_disable_msi(pdev); | |
2195 | ||
4039c30e | 2196 | /* Free IO remapping */ |
2197 | iounmap(tw_dev->base_addr); | |
2198 | ||
1da177e4 LT |
2199 | /* Free up the mem region */ |
2200 | pci_release_regions(pdev); | |
2201 | ||
2202 | /* Free up device extension resources */ | |
2203 | twa_free_device_extension(tw_dev); | |
2204 | ||
2205 | scsi_host_put(tw_dev->host); | |
2206 | pci_disable_device(pdev); | |
2207 | twa_device_extension_count--; | |
2208 | } /* End twa_remove() */ | |
2209 | ||
7a252fe7 | 2210 | #ifdef CONFIG_PM |
2211 | /* This function is called on PCI suspend */ | |
2212 | static int twa_suspend(struct pci_dev *pdev, pm_message_t state) | |
2213 | { | |
2214 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2215 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2216 | ||
2217 | printk(KERN_WARNING "3w-9xxx: Suspending host %d.\n", tw_dev->host->host_no); | |
2218 | ||
2219 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2220 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
2221 | ||
2222 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
2223 | pci_disable_msi(pdev); | |
2224 | ||
2225 | /* Tell the card we are shutting down */ | |
2226 | if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | |
2227 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x38, "Connection shutdown failed during suspend"); | |
2228 | } else { | |
2229 | printk(KERN_WARNING "3w-9xxx: Suspend complete.\n"); | |
2230 | } | |
2231 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
2232 | ||
2233 | pci_save_state(pdev); | |
2234 | pci_disable_device(pdev); | |
2235 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
2236 | ||
2237 | return 0; | |
2238 | } /* End twa_suspend() */ | |
2239 | ||
2240 | /* This function is called on PCI resume */ | |
2241 | static int twa_resume(struct pci_dev *pdev) | |
2242 | { | |
2243 | int retval = 0; | |
2244 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2245 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2246 | ||
2247 | printk(KERN_WARNING "3w-9xxx: Resuming host %d.\n", tw_dev->host->host_no); | |
2248 | pci_set_power_state(pdev, PCI_D0); | |
2249 | pci_enable_wake(pdev, PCI_D0, 0); | |
2250 | pci_restore_state(pdev); | |
2251 | ||
2252 | retval = pci_enable_device(pdev); | |
2253 | if (retval) { | |
2254 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x39, "Enable device failed during resume"); | |
2255 | return retval; | |
2256 | } | |
2257 | ||
2258 | pci_set_master(pdev); | |
2259 | pci_try_set_mwi(pdev); | |
2260 | ||
e930438c YH |
2261 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) |
2262 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) | |
2263 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) | |
2264 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { | |
7a252fe7 | 2265 | TW_PRINTK(host, TW_DRIVER, 0x40, "Failed to set dma mask during resume"); |
2266 | retval = -ENODEV; | |
2267 | goto out_disable_device; | |
2268 | } | |
2269 | ||
2270 | /* Initialize the card */ | |
2271 | if (twa_reset_sequence(tw_dev, 0)) { | |
2272 | retval = -ENODEV; | |
2273 | goto out_disable_device; | |
2274 | } | |
2275 | ||
2276 | /* Now setup the interrupt handler */ | |
2277 | retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev); | |
2278 | if (retval) { | |
2279 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x42, "Error requesting IRQ during resume"); | |
2280 | retval = -ENODEV; | |
2281 | goto out_disable_device; | |
2282 | } | |
2283 | ||
2284 | /* Now enable MSI if enabled */ | |
2285 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
2286 | pci_enable_msi(pdev); | |
2287 | ||
2288 | /* Re-enable interrupts on the card */ | |
2289 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2290 | ||
2291 | printk(KERN_WARNING "3w-9xxx: Resume complete.\n"); | |
2292 | return 0; | |
2293 | ||
2294 | out_disable_device: | |
2295 | scsi_remove_host(host); | |
2296 | pci_disable_device(pdev); | |
2297 | ||
2298 | return retval; | |
2299 | } /* End twa_resume() */ | |
2300 | #endif | |
2301 | ||
1da177e4 LT |
2302 | /* PCI Devices supported by this driver */ |
2303 | static struct pci_device_id twa_pci_tbl[] __devinitdata = { | |
2304 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000, | |
2305 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
49bfd8db | 2306 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9550SX, |
2307 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
4039c30e | 2308 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9650SE, |
2309 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
0e78d158 | 2310 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9690SA, |
2311 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1da177e4 LT |
2312 | { } |
2313 | }; | |
2314 | MODULE_DEVICE_TABLE(pci, twa_pci_tbl); | |
2315 | ||
2316 | /* pci_driver initializer */ | |
2317 | static struct pci_driver twa_driver = { | |
2318 | .name = "3w-9xxx", | |
2319 | .id_table = twa_pci_tbl, | |
2320 | .probe = twa_probe, | |
2321 | .remove = twa_remove, | |
7a252fe7 | 2322 | #ifdef CONFIG_PM |
2323 | .suspend = twa_suspend, | |
2324 | .resume = twa_resume, | |
2325 | #endif | |
d18c3db5 | 2326 | .shutdown = twa_shutdown |
1da177e4 LT |
2327 | }; |
2328 | ||
2329 | /* This function is called on driver initialization */ | |
2330 | static int __init twa_init(void) | |
2331 | { | |
2332 | printk(KERN_WARNING "3ware 9000 Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | |
2333 | ||
dcbccbde | 2334 | return pci_register_driver(&twa_driver); |
1da177e4 LT |
2335 | } /* End twa_init() */ |
2336 | ||
2337 | /* This function is called on driver exit */ | |
2338 | static void __exit twa_exit(void) | |
2339 | { | |
2340 | pci_unregister_driver(&twa_driver); | |
2341 | } /* End twa_exit() */ | |
2342 | ||
2343 | module_init(twa_init); | |
2344 | module_exit(twa_exit); | |
2345 |