Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | 3w-9xxx.c -- 3ware 9000 Storage Controller device driver for Linux. | |
3 | ||
4 | Written By: Adam Radford <linuxraid@amcc.com> | |
75913d9b | 5 | Modifications By: Tom Couch <linuxraid@amcc.com> |
1da177e4 | 6 | |
7a252fe7 | 7 | Copyright (C) 2004-2009 Applied Micro Circuits Corporation. |
1da177e4 LT |
8 | |
9 | This program is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; version 2 of the License. | |
12 | ||
13 | This program is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
17 | ||
18 | NO WARRANTY | |
19 | THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR | |
20 | CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT | |
21 | LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, | |
22 | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is | |
23 | solely responsible for determining the appropriateness of using and | |
24 | distributing the Program and assumes all risks associated with its | |
25 | exercise of rights under this Agreement, including but not limited to | |
26 | the risks and costs of program errors, damage to or loss of data, | |
27 | programs or equipment, and unavailability or interruption of operations. | |
28 | ||
29 | DISCLAIMER OF LIABILITY | |
30 | NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY | |
31 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
32 | DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND | |
33 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
34 | TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
35 | USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED | |
36 | HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES | |
37 | ||
38 | You should have received a copy of the GNU General Public License | |
39 | along with this program; if not, write to the Free Software | |
40 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
41 | ||
42 | Bugs/Comments/Suggestions should be mailed to: | |
43 | linuxraid@amcc.com | |
44 | ||
45 | For more information, goto: | |
46 | http://www.amcc.com | |
47 | ||
48 | Note: This version of the driver does not contain a bundled firmware | |
49 | image. | |
50 | ||
51 | History | |
52 | ------- | |
53 | 2.26.02.000 - Driver cleanup for kernel submission. | |
54 | 2.26.02.001 - Replace schedule_timeout() calls with msleep(). | |
55 | 2.26.02.002 - Add support for PAE mode. | |
56 | Add lun support. | |
57 | Fix twa_remove() to free irq handler/unregister_chrdev() | |
58 | before shutting down card. | |
59 | Change to new 'change_queue_depth' api. | |
60 | Fix 'handled=1' ISR usage, remove bogus IRQ check. | |
61 | Remove un-needed eh_abort handler. | |
62 | Add support for embedded firmware error strings. | |
d327d082 | 63 | 2.26.02.003 - Correctly handle single sgl's with use_sg=1. |
49bfd8db | 64 | 2.26.02.004 - Add support for 9550SX controllers. |
62288f10 | 65 | 2.26.02.005 - Fix use_sg == 0 mapping on systems with 4GB or higher. |
75913d9b AR |
66 | 2.26.02.006 - Fix 9550SX pchip reset timeout. |
67 | Add big endian support. | |
1e08dcb3 | 68 | 2.26.02.007 - Disable local interrupts during kmap/unmap_atomic(). |
4039c30e AR |
69 | 2.26.02.008 - Free irq handler in __twa_shutdown(). |
70 | Serialize reset code. | |
71 | Add support for 9650SE controllers. | |
0e78d158 AR |
72 | 2.26.02.009 - Fix dma mask setting to fallback to 32-bit if 64-bit fails. |
73 | 2.26.02.010 - Add support for 9690SA controllers. | |
3dabec71 AR |
74 | 2.26.02.011 - Increase max AENs drained to 256. |
75 | Add MSI support and "use_msi" module parameter. | |
76 | Fix bug in twa_get_param() on 4GB+. | |
77 | Use pci_resource_len() for ioremap(). | |
7a252fe7 | 78 | 2.26.02.012 - Add power management support. |
53ca3535 | 79 | 2.26.02.013 - Fix bug in twa_load_sgl(). |
1da177e4 LT |
80 | */ |
81 | ||
82 | #include <linux/module.h> | |
83 | #include <linux/reboot.h> | |
84 | #include <linux/spinlock.h> | |
85 | #include <linux/interrupt.h> | |
86 | #include <linux/moduleparam.h> | |
87 | #include <linux/errno.h> | |
88 | #include <linux/types.h> | |
89 | #include <linux/delay.h> | |
90 | #include <linux/pci.h> | |
91 | #include <linux/time.h> | |
a12e25bd | 92 | #include <linux/mutex.h> |
f2b9857e | 93 | #include <linux/smp_lock.h> |
1da177e4 LT |
94 | #include <asm/io.h> |
95 | #include <asm/irq.h> | |
96 | #include <asm/uaccess.h> | |
97 | #include <scsi/scsi.h> | |
98 | #include <scsi/scsi_host.h> | |
99 | #include <scsi/scsi_tcq.h> | |
100 | #include <scsi/scsi_cmnd.h> | |
101 | #include "3w-9xxx.h" | |
102 | ||
103 | /* Globals */ | |
53ca3535 | 104 | #define TW_DRIVER_VERSION "2.26.02.013" |
1da177e4 LT |
105 | static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT]; |
106 | static unsigned int twa_device_extension_count; | |
107 | static int twa_major = -1; | |
108 | extern struct timezone sys_tz; | |
109 | ||
110 | /* Module parameters */ | |
111 | MODULE_AUTHOR ("AMCC"); | |
112 | MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver"); | |
113 | MODULE_LICENSE("GPL"); | |
114 | MODULE_VERSION(TW_DRIVER_VERSION); | |
115 | ||
3dabec71 AR |
116 | static int use_msi = 0; |
117 | module_param(use_msi, int, S_IRUGO); | |
118 | MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0"); | |
119 | ||
1da177e4 LT |
120 | /* Function prototypes */ |
121 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header); | |
122 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id); | |
123 | static char *twa_aen_severity_lookup(unsigned char severity_code); | |
124 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id); | |
125 | static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); | |
126 | static int twa_chrdev_open(struct inode *inode, struct file *file); | |
127 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host); | |
128 | static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id); | |
129 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id); | |
130 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, | |
131 | u32 set_features, unsigned short current_fw_srl, | |
132 | unsigned short current_fw_arch_id, | |
133 | unsigned short current_fw_branch, | |
134 | unsigned short current_fw_build, | |
135 | unsigned short *fw_on_ctlr_srl, | |
136 | unsigned short *fw_on_ctlr_arch_id, | |
137 | unsigned short *fw_on_ctlr_branch, | |
138 | unsigned short *fw_on_ctlr_build, | |
139 | u32 *init_connect_result); | |
0e78d158 | 140 | 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 |
141 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds); |
142 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds); | |
143 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal); | |
0e78d158 | 144 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev); |
1da177e4 LT |
145 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset); |
146 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg); | |
147 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id); | |
148 | static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code); | |
149 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id); | |
150 | ||
151 | /* Functions */ | |
152 | ||
153 | /* Show some statistics about the card */ | |
ee959b00 TJ |
154 | static ssize_t twa_show_stats(struct device *dev, |
155 | struct device_attribute *attr, char *buf) | |
1da177e4 | 156 | { |
ee959b00 | 157 | struct Scsi_Host *host = class_to_shost(dev); |
1da177e4 LT |
158 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
159 | unsigned long flags = 0; | |
160 | ssize_t len; | |
161 | ||
162 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
163 | len = snprintf(buf, PAGE_SIZE, "3w-9xxx Driver version: %s\n" | |
164 | "Current commands posted: %4d\n" | |
165 | "Max commands posted: %4d\n" | |
166 | "Current pending commands: %4d\n" | |
167 | "Max pending commands: %4d\n" | |
168 | "Last sgl length: %4d\n" | |
169 | "Max sgl length: %4d\n" | |
170 | "Last sector count: %4d\n" | |
171 | "Max sector count: %4d\n" | |
172 | "SCSI Host Resets: %4d\n" | |
173 | "AEN's: %4d\n", | |
174 | TW_DRIVER_VERSION, | |
175 | tw_dev->posted_request_count, | |
176 | tw_dev->max_posted_request_count, | |
177 | tw_dev->pending_request_count, | |
178 | tw_dev->max_pending_request_count, | |
179 | tw_dev->sgl_entries, | |
180 | tw_dev->max_sgl_entries, | |
181 | tw_dev->sector_count, | |
182 | tw_dev->max_sector_count, | |
183 | tw_dev->num_resets, | |
184 | tw_dev->aen_count); | |
185 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
186 | return len; | |
187 | } /* End twa_show_stats() */ | |
188 | ||
189 | /* This function will set a devices queue depth */ | |
e881a172 MC |
190 | static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth, |
191 | int reason) | |
1da177e4 | 192 | { |
e881a172 MC |
193 | if (reason != SCSI_QDEPTH_DEFAULT) |
194 | return -EOPNOTSUPP; | |
195 | ||
1da177e4 LT |
196 | if (queue_depth > TW_Q_LENGTH-2) |
197 | queue_depth = TW_Q_LENGTH-2; | |
198 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); | |
199 | return queue_depth; | |
200 | } /* End twa_change_queue_depth() */ | |
201 | ||
202 | /* Create sysfs 'stats' entry */ | |
ee959b00 | 203 | static struct device_attribute twa_host_stats_attr = { |
1da177e4 LT |
204 | .attr = { |
205 | .name = "stats", | |
206 | .mode = S_IRUGO, | |
207 | }, | |
208 | .show = twa_show_stats | |
209 | }; | |
210 | ||
211 | /* Host attributes initializer */ | |
ee959b00 | 212 | static struct device_attribute *twa_host_attrs[] = { |
1da177e4 LT |
213 | &twa_host_stats_attr, |
214 | NULL, | |
215 | }; | |
216 | ||
217 | /* File operations struct for character device */ | |
00977a59 | 218 | static const struct file_operations twa_fops = { |
1da177e4 LT |
219 | .owner = THIS_MODULE, |
220 | .ioctl = twa_chrdev_ioctl, | |
221 | .open = twa_chrdev_open, | |
222 | .release = NULL | |
223 | }; | |
224 | ||
225 | /* This function will complete an aen request from the isr */ | |
226 | static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id) | |
227 | { | |
228 | TW_Command_Full *full_command_packet; | |
229 | TW_Command *command_packet; | |
230 | TW_Command_Apache_Header *header; | |
231 | unsigned short aen; | |
232 | int retval = 1; | |
233 | ||
234 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
235 | tw_dev->posted_request_count--; | |
75913d9b | 236 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
237 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
238 | command_packet = &full_command_packet->command.oldcommand; | |
239 | ||
240 | /* First check for internal completion of set param for time sync */ | |
241 | if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) { | |
242 | /* Keep reading the queue in case there are more aen's */ | |
243 | if (twa_aen_read_queue(tw_dev, request_id)) | |
244 | goto out2; | |
245 | else { | |
246 | retval = 0; | |
247 | goto out; | |
248 | } | |
249 | } | |
250 | ||
251 | switch (aen) { | |
252 | case TW_AEN_QUEUE_EMPTY: | |
253 | /* Quit reading the queue if this is the last one */ | |
254 | break; | |
255 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
256 | twa_aen_sync_time(tw_dev, request_id); | |
257 | retval = 0; | |
258 | goto out; | |
259 | default: | |
260 | twa_aen_queue_event(tw_dev, header); | |
261 | ||
262 | /* If there are more aen's, keep reading the queue */ | |
263 | if (twa_aen_read_queue(tw_dev, request_id)) | |
264 | goto out2; | |
265 | else { | |
266 | retval = 0; | |
267 | goto out; | |
268 | } | |
269 | } | |
270 | retval = 0; | |
271 | out2: | |
272 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
273 | twa_free_request_id(tw_dev, request_id); | |
274 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
275 | out: | |
276 | return retval; | |
277 | } /* End twa_aen_complete() */ | |
278 | ||
279 | /* This function will drain aen queue */ | |
280 | static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) | |
281 | { | |
282 | int request_id = 0; | |
283 | char cdb[TW_MAX_CDB_LEN]; | |
284 | TW_SG_Entry sglist[1]; | |
285 | int finished = 0, count = 0; | |
286 | TW_Command_Full *full_command_packet; | |
287 | TW_Command_Apache_Header *header; | |
288 | unsigned short aen; | |
289 | int first_reset = 0, queue = 0, retval = 1; | |
290 | ||
291 | if (no_check_reset) | |
292 | first_reset = 0; | |
293 | else | |
294 | first_reset = 1; | |
295 | ||
296 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
297 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
298 | ||
299 | /* Initialize cdb */ | |
300 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
301 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
302 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
303 | ||
304 | /* Initialize sglist */ | |
305 | memset(&sglist, 0, sizeof(TW_SG_Entry)); | |
306 | sglist[0].length = TW_SECTOR_SIZE; | |
307 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
308 | ||
309 | if (sglist[0].address & TW_ALIGNMENT_9000_SGL) { | |
310 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Found unaligned address during AEN drain"); | |
311 | goto out; | |
312 | } | |
313 | ||
314 | /* Mark internal command */ | |
315 | tw_dev->srb[request_id] = NULL; | |
316 | ||
317 | do { | |
318 | /* Send command to the board */ | |
319 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
320 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Error posting request sense"); | |
321 | goto out; | |
322 | } | |
323 | ||
324 | /* Now poll for completion */ | |
325 | if (twa_poll_response(tw_dev, request_id, 30)) { | |
326 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "No valid response while draining AEN queue"); | |
327 | tw_dev->posted_request_count--; | |
328 | goto out; | |
329 | } | |
330 | ||
331 | tw_dev->posted_request_count--; | |
332 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
75913d9b | 333 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
334 | queue = 0; |
335 | count++; | |
336 | ||
337 | switch (aen) { | |
338 | case TW_AEN_QUEUE_EMPTY: | |
339 | if (first_reset != 1) | |
340 | goto out; | |
341 | else | |
342 | finished = 1; | |
343 | break; | |
344 | case TW_AEN_SOFT_RESET: | |
345 | if (first_reset == 0) | |
346 | first_reset = 1; | |
347 | else | |
348 | queue = 1; | |
349 | break; | |
350 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
351 | break; | |
352 | default: | |
353 | queue = 1; | |
354 | } | |
355 | ||
356 | /* Now queue an event info */ | |
357 | if (queue) | |
358 | twa_aen_queue_event(tw_dev, header); | |
359 | } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN)); | |
360 | ||
361 | if (count == TW_MAX_AEN_DRAIN) | |
362 | goto out; | |
363 | ||
364 | retval = 0; | |
365 | out: | |
366 | tw_dev->state[request_id] = TW_S_INITIAL; | |
367 | return retval; | |
368 | } /* End twa_aen_drain_queue() */ | |
369 | ||
370 | /* This function will queue an event */ | |
371 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header) | |
372 | { | |
373 | u32 local_time; | |
374 | struct timeval time; | |
375 | TW_Event *event; | |
376 | unsigned short aen; | |
377 | char host[16]; | |
378 | char *error_str; | |
379 | ||
380 | tw_dev->aen_count++; | |
381 | ||
382 | /* Fill out event info */ | |
383 | event = tw_dev->event_queue[tw_dev->error_index]; | |
384 | ||
385 | /* Check for clobber */ | |
386 | host[0] = '\0'; | |
387 | if (tw_dev->host) { | |
388 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | |
389 | if (event->retrieved == TW_AEN_NOT_RETRIEVED) | |
390 | tw_dev->aen_clobber = 1; | |
391 | } | |
392 | ||
75913d9b | 393 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
394 | memset(event, 0, sizeof(TW_Event)); |
395 | ||
396 | event->severity = TW_SEV_OUT(header->status_block.severity__reserved); | |
397 | do_gettimeofday(&time); | |
398 | local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60)); | |
399 | event->time_stamp_sec = local_time; | |
400 | event->aen_code = aen; | |
401 | event->retrieved = TW_AEN_NOT_RETRIEVED; | |
402 | event->sequence_id = tw_dev->error_sequence_id; | |
403 | tw_dev->error_sequence_id++; | |
404 | ||
405 | /* Check for embedded error string */ | |
406 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]); | |
407 | ||
408 | header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0'; | |
409 | event->parameter_len = strlen(header->err_specific_desc); | |
75913d9b | 410 | memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + (error_str[0] == '\0' ? 0 : (1 + strlen(error_str)))); |
1da177e4 LT |
411 | if (event->severity != TW_AEN_SEVERITY_DEBUG) |
412 | printk(KERN_WARNING "3w-9xxx:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n", | |
413 | host, | |
414 | twa_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)), | |
415 | TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, | |
416 | error_str[0] == '\0' ? twa_string_lookup(twa_aen_table, aen) : error_str, | |
417 | header->err_specific_desc); | |
418 | else | |
419 | tw_dev->aen_count--; | |
420 | ||
421 | if ((tw_dev->error_index + 1) == TW_Q_LENGTH) | |
422 | tw_dev->event_queue_wrapped = 1; | |
423 | tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH; | |
424 | } /* End twa_aen_queue_event() */ | |
425 | ||
426 | /* This function will read the aen queue from the isr */ | |
427 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | |
428 | { | |
429 | char cdb[TW_MAX_CDB_LEN]; | |
430 | TW_SG_Entry sglist[1]; | |
431 | TW_Command_Full *full_command_packet; | |
432 | int retval = 1; | |
433 | ||
434 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
435 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
436 | ||
437 | /* Initialize cdb */ | |
438 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
439 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
440 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
441 | ||
442 | /* Initialize sglist */ | |
443 | memset(&sglist, 0, sizeof(TW_SG_Entry)); | |
444 | sglist[0].length = TW_SECTOR_SIZE; | |
445 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
446 | ||
447 | /* Mark internal command */ | |
448 | tw_dev->srb[request_id] = NULL; | |
449 | ||
450 | /* Now post the command packet */ | |
451 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
452 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "Post failed while reading AEN queue"); | |
453 | goto out; | |
454 | } | |
455 | retval = 0; | |
456 | out: | |
457 | return retval; | |
458 | } /* End twa_aen_read_queue() */ | |
459 | ||
460 | /* This function will look up an AEN severity string */ | |
461 | static char *twa_aen_severity_lookup(unsigned char severity_code) | |
462 | { | |
463 | char *retval = NULL; | |
464 | ||
465 | if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) || | |
466 | (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG)) | |
467 | goto out; | |
468 | ||
469 | retval = twa_aen_severity_table[severity_code]; | |
470 | out: | |
471 | return retval; | |
472 | } /* End twa_aen_severity_lookup() */ | |
473 | ||
474 | /* This function will sync firmware time with the host time */ | |
475 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) | |
476 | { | |
477 | u32 schedulertime; | |
478 | struct timeval utc; | |
479 | TW_Command_Full *full_command_packet; | |
480 | TW_Command *command_packet; | |
481 | TW_Param_Apache *param; | |
482 | u32 local_time; | |
483 | ||
484 | /* Fill out the command packet */ | |
485 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
486 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
487 | command_packet = &full_command_packet->command.oldcommand; | |
488 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | |
489 | command_packet->request_id = request_id; | |
75913d9b AR |
490 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
491 | command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); | |
1da177e4 | 492 | command_packet->size = TW_COMMAND_SIZE; |
75913d9b | 493 | command_packet->byte6_offset.parameter_count = cpu_to_le16(1); |
1da177e4 LT |
494 | |
495 | /* Setup the param */ | |
496 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
497 | memset(param, 0, TW_SECTOR_SIZE); | |
75913d9b AR |
498 | param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */ |
499 | param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */ | |
500 | param->parameter_size_bytes = cpu_to_le16(4); | |
1da177e4 LT |
501 | |
502 | /* Convert system time in UTC to local time seconds since last | |
503 | Sunday 12:00AM */ | |
504 | do_gettimeofday(&utc); | |
505 | local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60)); | |
506 | schedulertime = local_time - (3 * 86400); | |
75913d9b | 507 | schedulertime = cpu_to_le32(schedulertime % 604800); |
1da177e4 LT |
508 | |
509 | memcpy(param->data, &schedulertime, sizeof(u32)); | |
510 | ||
511 | /* Mark internal command */ | |
512 | tw_dev->srb[request_id] = NULL; | |
513 | ||
514 | /* Now post the command */ | |
515 | twa_post_command_packet(tw_dev, request_id, 1); | |
516 | } /* End twa_aen_sync_time() */ | |
517 | ||
518 | /* This function will allocate memory and check if it is correctly aligned */ | |
519 | static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | |
520 | { | |
521 | int i; | |
522 | dma_addr_t dma_handle; | |
523 | unsigned long *cpu_addr; | |
524 | int retval = 1; | |
525 | ||
526 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); | |
527 | if (!cpu_addr) { | |
528 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed"); | |
529 | goto out; | |
530 | } | |
531 | ||
532 | if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) { | |
533 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory"); | |
534 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); | |
535 | goto out; | |
536 | } | |
537 | ||
538 | memset(cpu_addr, 0, size*TW_Q_LENGTH); | |
539 | ||
540 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
541 | switch(which) { | |
542 | case 0: | |
543 | tw_dev->command_packet_phys[i] = dma_handle+(i*size); | |
544 | tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size)); | |
545 | break; | |
546 | case 1: | |
547 | tw_dev->generic_buffer_phys[i] = dma_handle+(i*size); | |
548 | tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
549 | break; | |
550 | } | |
551 | } | |
552 | retval = 0; | |
553 | out: | |
554 | return retval; | |
555 | } /* End twa_allocate_memory() */ | |
556 | ||
557 | /* This function will check the status register for unexpected bits */ | |
558 | static int twa_check_bits(u32 status_reg_value) | |
559 | { | |
560 | int retval = 1; | |
561 | ||
562 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) | |
563 | goto out; | |
564 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) | |
565 | goto out; | |
566 | ||
567 | retval = 0; | |
568 | out: | |
569 | return retval; | |
570 | } /* End twa_check_bits() */ | |
571 | ||
572 | /* This function will check the srl and decide if we are compatible */ | |
573 | static int twa_check_srl(TW_Device_Extension *tw_dev, int *flashed) | |
574 | { | |
575 | int retval = 1; | |
576 | unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0; | |
577 | unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0; | |
578 | u32 init_connect_result = 0; | |
579 | ||
580 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
581 | TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL, | |
582 | TW_9000_ARCH_ID, TW_CURRENT_DRIVER_BRANCH, | |
583 | TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl, | |
584 | &fw_on_ctlr_arch_id, &fw_on_ctlr_branch, | |
585 | &fw_on_ctlr_build, &init_connect_result)) { | |
586 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "Initconnection failed while checking SRL"); | |
587 | goto out; | |
588 | } | |
589 | ||
4039c30e AR |
590 | tw_dev->tw_compat_info.working_srl = fw_on_ctlr_srl; |
591 | tw_dev->tw_compat_info.working_branch = fw_on_ctlr_branch; | |
592 | tw_dev->tw_compat_info.working_build = fw_on_ctlr_build; | |
1da177e4 LT |
593 | |
594 | /* Try base mode compatibility */ | |
595 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { | |
596 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
597 | TW_EXTENDED_INIT_CONNECT, | |
598 | TW_BASE_FW_SRL, TW_9000_ARCH_ID, | |
599 | TW_BASE_FW_BRANCH, TW_BASE_FW_BUILD, | |
600 | &fw_on_ctlr_srl, &fw_on_ctlr_arch_id, | |
601 | &fw_on_ctlr_branch, &fw_on_ctlr_build, | |
602 | &init_connect_result)) { | |
603 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Initconnection (base mode) failed while checking SRL"); | |
604 | goto out; | |
605 | } | |
606 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { | |
607 | if (TW_CURRENT_DRIVER_SRL > fw_on_ctlr_srl) { | |
608 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x32, "Firmware and driver incompatibility: please upgrade firmware"); | |
609 | } else { | |
610 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x33, "Firmware and driver incompatibility: please upgrade driver"); | |
611 | } | |
612 | goto out; | |
613 | } | |
4039c30e AR |
614 | tw_dev->tw_compat_info.working_srl = TW_BASE_FW_SRL; |
615 | tw_dev->tw_compat_info.working_branch = TW_BASE_FW_BRANCH; | |
616 | tw_dev->tw_compat_info.working_build = TW_BASE_FW_BUILD; | |
617 | } | |
618 | ||
619 | /* Load rest of compatibility struct */ | |
620 | strncpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION)); | |
621 | tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL; | |
622 | tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH; | |
623 | tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD; | |
624 | tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL; | |
625 | tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH; | |
626 | tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD; | |
627 | tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl; | |
628 | tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch; | |
629 | tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build; | |
630 | ||
1da177e4 LT |
631 | retval = 0; |
632 | out: | |
633 | return retval; | |
634 | } /* End twa_check_srl() */ | |
635 | ||
636 | /* This function handles ioctl for the character device */ | |
637 | static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
638 | { | |
639 | long timeout; | |
640 | unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; | |
641 | dma_addr_t dma_handle; | |
642 | int request_id = 0; | |
643 | unsigned int sequence_id = 0; | |
644 | unsigned char event_index, start_index; | |
645 | TW_Ioctl_Driver_Command driver_command; | |
646 | TW_Ioctl_Buf_Apache *tw_ioctl; | |
647 | TW_Lock *tw_lock; | |
648 | TW_Command_Full *full_command_packet; | |
649 | TW_Compatibility_Info *tw_compat_info; | |
650 | TW_Event *event; | |
651 | struct timeval current_time; | |
652 | u32 current_time_ms; | |
653 | TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)]; | |
654 | int retval = TW_IOCTL_ERROR_OS_EFAULT; | |
655 | void __user *argp = (void __user *)arg; | |
656 | ||
657 | /* Only let one of these through at a time */ | |
a12e25bd | 658 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { |
1da177e4 LT |
659 | retval = TW_IOCTL_ERROR_OS_EINTR; |
660 | goto out; | |
661 | } | |
662 | ||
663 | /* First copy down the driver command */ | |
664 | if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command))) | |
665 | goto out2; | |
666 | ||
667 | /* Check data buffer size */ | |
4039c30e | 668 | if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) { |
1da177e4 LT |
669 | retval = TW_IOCTL_ERROR_OS_EINVAL; |
670 | goto out2; | |
671 | } | |
672 | ||
673 | /* Hardware can only do multiple of 512 byte transfers */ | |
674 | data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511; | |
675 | ||
676 | /* Now allocate ioctl buf memory */ | |
677 | 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); | |
678 | if (!cpu_addr) { | |
679 | retval = TW_IOCTL_ERROR_OS_ENOMEM; | |
680 | goto out2; | |
681 | } | |
682 | ||
683 | tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr; | |
684 | ||
685 | /* Now copy down the entire ioctl */ | |
686 | if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1)) | |
687 | goto out3; | |
688 | ||
689 | /* See which ioctl we are doing */ | |
690 | switch (cmd) { | |
691 | case TW_IOCTL_FIRMWARE_PASS_THROUGH: | |
692 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
693 | twa_get_request_id(tw_dev, &request_id); | |
694 | ||
695 | /* Flag internal command */ | |
696 | tw_dev->srb[request_id] = NULL; | |
697 | ||
698 | /* Flag chrdev ioctl */ | |
699 | tw_dev->chrdev_request_id = request_id; | |
700 | ||
701 | full_command_packet = &tw_ioctl->firmware_command; | |
702 | ||
703 | /* Load request id and sglist for both command types */ | |
0e78d158 | 704 | twa_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted); |
1da177e4 LT |
705 | |
706 | memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full)); | |
707 | ||
708 | /* Now post the command packet to the controller */ | |
709 | twa_post_command_packet(tw_dev, request_id, 1); | |
710 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
711 | ||
712 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | |
713 | ||
714 | /* Now wait for command to complete */ | |
715 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | |
716 | ||
1da177e4 LT |
717 | /* We timed out, and didn't get an interrupt */ |
718 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | |
719 | /* Now we need to reset the board */ | |
720 | printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n", | |
0e78d158 | 721 | tw_dev->host->host_no, TW_DRIVER, 0x37, |
1da177e4 LT |
722 | cmd); |
723 | retval = TW_IOCTL_ERROR_OS_EIO; | |
0e78d158 | 724 | twa_reset_device_extension(tw_dev); |
1da177e4 LT |
725 | goto out3; |
726 | } | |
727 | ||
728 | /* Now copy in the command packet response */ | |
729 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full)); | |
730 | ||
731 | /* Now complete the io */ | |
732 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
733 | tw_dev->posted_request_count--; | |
734 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
735 | twa_free_request_id(tw_dev, request_id); | |
736 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
737 | break; | |
738 | case TW_IOCTL_GET_COMPATIBILITY_INFO: | |
739 | tw_ioctl->driver_command.status = 0; | |
06fe9fb4 | 740 | /* Copy compatibility struct into ioctl data buffer */ |
1da177e4 | 741 | tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer; |
4039c30e | 742 | memcpy(tw_compat_info, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info)); |
1da177e4 LT |
743 | break; |
744 | case TW_IOCTL_GET_LAST_EVENT: | |
745 | if (tw_dev->event_queue_wrapped) { | |
746 | if (tw_dev->aen_clobber) { | |
747 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
748 | tw_dev->aen_clobber = 0; | |
749 | } else | |
750 | tw_ioctl->driver_command.status = 0; | |
751 | } else { | |
752 | if (!tw_dev->error_index) { | |
753 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
754 | break; | |
755 | } | |
756 | tw_ioctl->driver_command.status = 0; | |
757 | } | |
758 | event_index = (tw_dev->error_index - 1 + TW_Q_LENGTH) % TW_Q_LENGTH; | |
759 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
760 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
761 | break; | |
762 | case TW_IOCTL_GET_FIRST_EVENT: | |
763 | if (tw_dev->event_queue_wrapped) { | |
764 | if (tw_dev->aen_clobber) { | |
765 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
766 | tw_dev->aen_clobber = 0; | |
767 | } else | |
768 | tw_ioctl->driver_command.status = 0; | |
769 | event_index = tw_dev->error_index; | |
770 | } else { | |
771 | if (!tw_dev->error_index) { | |
772 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
773 | break; | |
774 | } | |
775 | tw_ioctl->driver_command.status = 0; | |
776 | event_index = 0; | |
777 | } | |
778 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
779 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
780 | break; | |
781 | case TW_IOCTL_GET_NEXT_EVENT: | |
782 | event = (TW_Event *)tw_ioctl->data_buffer; | |
783 | sequence_id = event->sequence_id; | |
784 | tw_ioctl->driver_command.status = 0; | |
785 | ||
786 | if (tw_dev->event_queue_wrapped) { | |
787 | if (tw_dev->aen_clobber) { | |
788 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
789 | tw_dev->aen_clobber = 0; | |
790 | } | |
791 | start_index = tw_dev->error_index; | |
792 | } else { | |
793 | if (!tw_dev->error_index) { | |
794 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
795 | break; | |
796 | } | |
797 | start_index = 0; | |
798 | } | |
799 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id + 1) % TW_Q_LENGTH; | |
800 | ||
801 | if (!(tw_dev->event_queue[event_index]->sequence_id > sequence_id)) { | |
802 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) | |
803 | tw_dev->aen_clobber = 1; | |
804 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
805 | break; | |
806 | } | |
807 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
808 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
809 | break; | |
810 | case TW_IOCTL_GET_PREVIOUS_EVENT: | |
811 | event = (TW_Event *)tw_ioctl->data_buffer; | |
812 | sequence_id = event->sequence_id; | |
813 | tw_ioctl->driver_command.status = 0; | |
814 | ||
815 | if (tw_dev->event_queue_wrapped) { | |
816 | if (tw_dev->aen_clobber) { | |
817 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
818 | tw_dev->aen_clobber = 0; | |
819 | } | |
820 | start_index = tw_dev->error_index; | |
821 | } else { | |
822 | if (!tw_dev->error_index) { | |
823 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
824 | break; | |
825 | } | |
826 | start_index = 0; | |
827 | } | |
828 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id - 1) % TW_Q_LENGTH; | |
829 | ||
830 | if (!(tw_dev->event_queue[event_index]->sequence_id < sequence_id)) { | |
831 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) | |
832 | tw_dev->aen_clobber = 1; | |
833 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
834 | break; | |
835 | } | |
836 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
837 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
838 | break; | |
839 | case TW_IOCTL_GET_LOCK: | |
840 | tw_lock = (TW_Lock *)tw_ioctl->data_buffer; | |
841 | do_gettimeofday(¤t_time); | |
842 | current_time_ms = (current_time.tv_sec * 1000) + (current_time.tv_usec / 1000); | |
843 | ||
844 | if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) || (current_time_ms >= tw_dev->ioctl_msec)) { | |
845 | tw_dev->ioctl_sem_lock = 1; | |
846 | tw_dev->ioctl_msec = current_time_ms + tw_lock->timeout_msec; | |
847 | tw_ioctl->driver_command.status = 0; | |
848 | tw_lock->time_remaining_msec = tw_lock->timeout_msec; | |
849 | } else { | |
850 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED; | |
851 | tw_lock->time_remaining_msec = tw_dev->ioctl_msec - current_time_ms; | |
852 | } | |
853 | break; | |
854 | case TW_IOCTL_RELEASE_LOCK: | |
855 | if (tw_dev->ioctl_sem_lock == 1) { | |
856 | tw_dev->ioctl_sem_lock = 0; | |
857 | tw_ioctl->driver_command.status = 0; | |
858 | } else { | |
859 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED; | |
860 | } | |
861 | break; | |
862 | default: | |
863 | retval = TW_IOCTL_ERROR_OS_ENOTTY; | |
864 | goto out3; | |
865 | } | |
866 | ||
867 | /* Now copy the entire response to userspace */ | |
868 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0) | |
869 | retval = 0; | |
870 | out3: | |
871 | /* Now free ioctl buf memory */ | |
872 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle); | |
873 | out2: | |
a12e25bd | 874 | mutex_unlock(&tw_dev->ioctl_lock); |
1da177e4 LT |
875 | out: |
876 | return retval; | |
877 | } /* End twa_chrdev_ioctl() */ | |
878 | ||
879 | /* This function handles open for the character device */ | |
f2b9857e | 880 | /* NOTE that this function will race with remove. */ |
1da177e4 LT |
881 | static int twa_chrdev_open(struct inode *inode, struct file *file) |
882 | { | |
883 | unsigned int minor_number; | |
884 | int retval = TW_IOCTL_ERROR_OS_ENODEV; | |
885 | ||
f2b9857e | 886 | cycle_kernel_lock(); |
1da177e4 LT |
887 | minor_number = iminor(inode); |
888 | if (minor_number >= twa_device_extension_count) | |
889 | goto out; | |
890 | retval = 0; | |
891 | out: | |
892 | return retval; | |
893 | } /* End twa_chrdev_open() */ | |
894 | ||
895 | /* This function will print readable messages from status register errors */ | |
896 | static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value) | |
897 | { | |
898 | int retval = 1; | |
899 | ||
900 | /* Check for various error conditions and handle them appropriately */ | |
901 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { | |
902 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "PCI Parity Error: clearing"); | |
903 | writel(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
904 | } | |
905 | ||
906 | if (status_reg_value & TW_STATUS_PCI_ABORT) { | |
907 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "PCI Abort: clearing"); | |
908 | writel(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); | |
909 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); | |
910 | } | |
911 | ||
912 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { | |
0e78d158 AR |
913 | if (((tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9650SE) && |
914 | (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9690SA)) || | |
915 | (!test_bit(TW_IN_RESET, &tw_dev->flags))) | |
4039c30e | 916 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Controller Queue Error: clearing"); |
1da177e4 LT |
917 | writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
918 | } | |
919 | ||
1da177e4 LT |
920 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { |
921 | if (tw_dev->reset_print == 0) { | |
922 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing"); | |
923 | tw_dev->reset_print = 1; | |
924 | } | |
925 | goto out; | |
926 | } | |
927 | retval = 0; | |
928 | out: | |
929 | return retval; | |
930 | } /* End twa_decode_bits() */ | |
931 | ||
932 | /* This function will empty the response queue */ | |
933 | static int twa_empty_response_queue(TW_Device_Extension *tw_dev) | |
934 | { | |
935 | u32 status_reg_value, response_que_value; | |
936 | int count = 0, retval = 1; | |
937 | ||
938 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
939 | ||
940 | while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) { | |
941 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
942 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
943 | count++; | |
944 | } | |
945 | if (count == TW_MAX_RESPONSE_DRAIN) | |
946 | goto out; | |
947 | ||
948 | retval = 0; | |
949 | out: | |
950 | return retval; | |
951 | } /* End twa_empty_response_queue() */ | |
952 | ||
49bfd8db AR |
953 | /* This function will clear the pchip/response queue on 9550SX */ |
954 | static int twa_empty_response_queue_large(TW_Device_Extension *tw_dev) | |
955 | { | |
75913d9b AR |
956 | u32 response_que_value = 0; |
957 | unsigned long before; | |
958 | int retval = 1; | |
49bfd8db | 959 | |
0e78d158 | 960 | if (tw_dev->tw_pci_dev->device != PCI_DEVICE_ID_3WARE_9000) { |
75913d9b AR |
961 | before = jiffies; |
962 | while ((response_que_value & TW_9550SX_DRAIN_COMPLETED) != TW_9550SX_DRAIN_COMPLETED) { | |
49bfd8db | 963 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR_LARGE(tw_dev)); |
4039c30e | 964 | msleep(1); |
75913d9b | 965 | if (time_after(jiffies, before + HZ * 30)) |
49bfd8db | 966 | goto out; |
49bfd8db | 967 | } |
75913d9b AR |
968 | /* P-chip settle time */ |
969 | msleep(500); | |
49bfd8db AR |
970 | retval = 0; |
971 | } else | |
972 | retval = 0; | |
973 | out: | |
974 | return retval; | |
975 | } /* End twa_empty_response_queue_large() */ | |
976 | ||
1da177e4 LT |
977 | /* This function passes sense keys from firmware to scsi layer */ |
978 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host) | |
979 | { | |
980 | TW_Command_Full *full_command_packet; | |
981 | unsigned short error; | |
982 | int retval = 1; | |
983 | char *error_str; | |
984 | ||
985 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
986 | ||
987 | /* Check for embedded error string */ | |
988 | error_str = &(full_command_packet->header.err_specific_desc[strlen(full_command_packet->header.err_specific_desc) + 1]); | |
989 | ||
990 | /* Don't print error for Logical unit not supported during rollcall */ | |
75913d9b | 991 | error = le16_to_cpu(full_command_packet->header.status_block.error); |
1da177e4 LT |
992 | if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE)) { |
993 | if (print_host) | |
994 | printk(KERN_WARNING "3w-9xxx: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
995 | tw_dev->host->host_no, | |
996 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
997 | full_command_packet->header.status_block.error, | |
998 | error_str[0] == '\0' ? | |
999 | twa_string_lookup(twa_error_table, | |
1000 | full_command_packet->header.status_block.error) : error_str, | |
1001 | full_command_packet->header.err_specific_desc); | |
1002 | else | |
1003 | printk(KERN_WARNING "3w-9xxx: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
1004 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
1005 | full_command_packet->header.status_block.error, | |
1006 | error_str[0] == '\0' ? | |
1007 | twa_string_lookup(twa_error_table, | |
1008 | full_command_packet->header.status_block.error) : error_str, | |
1009 | full_command_packet->header.err_specific_desc); | |
1010 | } | |
1011 | ||
1012 | if (copy_sense) { | |
1013 | memcpy(tw_dev->srb[request_id]->sense_buffer, full_command_packet->header.sense_data, TW_SENSE_DATA_LENGTH); | |
1014 | tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1); | |
1015 | retval = TW_ISR_DONT_RESULT; | |
1016 | goto out; | |
1017 | } | |
1018 | retval = 0; | |
1019 | out: | |
1020 | return retval; | |
1021 | } /* End twa_fill_sense() */ | |
1022 | ||
1023 | /* This function will free up device extension resources */ | |
1024 | static void twa_free_device_extension(TW_Device_Extension *tw_dev) | |
1025 | { | |
1026 | if (tw_dev->command_packet_virt[0]) | |
1027 | pci_free_consistent(tw_dev->tw_pci_dev, | |
1028 | sizeof(TW_Command_Full)*TW_Q_LENGTH, | |
1029 | tw_dev->command_packet_virt[0], | |
1030 | tw_dev->command_packet_phys[0]); | |
1031 | ||
1032 | if (tw_dev->generic_buffer_virt[0]) | |
1033 | pci_free_consistent(tw_dev->tw_pci_dev, | |
1034 | TW_SECTOR_SIZE*TW_Q_LENGTH, | |
1035 | tw_dev->generic_buffer_virt[0], | |
1036 | tw_dev->generic_buffer_phys[0]); | |
1037 | ||
c9475cb0 | 1038 | kfree(tw_dev->event_queue[0]); |
1da177e4 LT |
1039 | } /* End twa_free_device_extension() */ |
1040 | ||
1041 | /* This function will free a request id */ | |
1042 | static void twa_free_request_id(TW_Device_Extension *tw_dev, int request_id) | |
1043 | { | |
1044 | tw_dev->free_queue[tw_dev->free_tail] = request_id; | |
1045 | tw_dev->state[request_id] = TW_S_FINISHED; | |
1046 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; | |
1047 | } /* End twa_free_request_id() */ | |
1048 | ||
7f927fcc | 1049 | /* This function will get parameter table entries from the firmware */ |
1da177e4 LT |
1050 | static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes) |
1051 | { | |
1052 | TW_Command_Full *full_command_packet; | |
1053 | TW_Command *command_packet; | |
1054 | TW_Param_Apache *param; | |
1da177e4 LT |
1055 | void *retval = NULL; |
1056 | ||
1057 | /* Setup the command packet */ | |
1058 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1059 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
1060 | command_packet = &full_command_packet->command.oldcommand; | |
1061 | ||
1062 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1063 | command_packet->size = TW_COMMAND_SIZE; | |
1064 | command_packet->request_id = request_id; | |
75913d9b | 1065 | command_packet->byte6_offset.block_count = cpu_to_le16(1); |
1da177e4 LT |
1066 | |
1067 | /* Now setup the param */ | |
1068 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
1069 | memset(param, 0, TW_SECTOR_SIZE); | |
75913d9b AR |
1070 | param->table_id = cpu_to_le16(table_id | 0x8000); |
1071 | param->parameter_id = cpu_to_le16(parameter_id); | |
1072 | param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes); | |
1da177e4 | 1073 | |
3dabec71 | 1074 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
75913d9b | 1075 | command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); |
1da177e4 LT |
1076 | |
1077 | /* Post the command packet to the board */ | |
1078 | twa_post_command_packet(tw_dev, request_id, 1); | |
1079 | ||
1080 | /* Poll for completion */ | |
1081 | if (twa_poll_response(tw_dev, request_id, 30)) | |
1082 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "No valid response during get param") | |
1083 | else | |
1084 | retval = (void *)&(param->data[0]); | |
1085 | ||
1086 | tw_dev->posted_request_count--; | |
1087 | tw_dev->state[request_id] = TW_S_INITIAL; | |
1088 | ||
1089 | return retval; | |
1090 | } /* End twa_get_param() */ | |
1091 | ||
1092 | /* This function will assign an available request id */ | |
1093 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id) | |
1094 | { | |
1095 | *request_id = tw_dev->free_queue[tw_dev->free_head]; | |
1096 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; | |
1097 | tw_dev->state[*request_id] = TW_S_STARTED; | |
1098 | } /* End twa_get_request_id() */ | |
1099 | ||
1100 | /* This function will send an initconnection command to controller */ | |
1101 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, | |
1102 | u32 set_features, unsigned short current_fw_srl, | |
1103 | unsigned short current_fw_arch_id, | |
1104 | unsigned short current_fw_branch, | |
1105 | unsigned short current_fw_build, | |
1106 | unsigned short *fw_on_ctlr_srl, | |
1107 | unsigned short *fw_on_ctlr_arch_id, | |
1108 | unsigned short *fw_on_ctlr_branch, | |
1109 | unsigned short *fw_on_ctlr_build, | |
1110 | u32 *init_connect_result) | |
1111 | { | |
1112 | TW_Command_Full *full_command_packet; | |
1113 | TW_Initconnect *tw_initconnect; | |
1114 | int request_id = 0, retval = 1; | |
1115 | ||
1116 | /* Initialize InitConnection command packet */ | |
1117 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1118 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
1119 | full_command_packet->header.header_desc.size_header = 128; | |
1120 | ||
1121 | tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand; | |
1122 | tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION); | |
1123 | tw_initconnect->request_id = request_id; | |
75913d9b | 1124 | tw_initconnect->message_credits = cpu_to_le16(message_credits); |
1da177e4 LT |
1125 | tw_initconnect->features = set_features; |
1126 | ||
1127 | /* Turn on 64-bit sgl support if we need to */ | |
1128 | tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0; | |
1129 | ||
75913d9b AR |
1130 | tw_initconnect->features = cpu_to_le32(tw_initconnect->features); |
1131 | ||
1da177e4 LT |
1132 | if (set_features & TW_EXTENDED_INIT_CONNECT) { |
1133 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED; | |
75913d9b AR |
1134 | tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl); |
1135 | tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id); | |
1136 | tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch); | |
1137 | tw_initconnect->fw_build = cpu_to_le16(current_fw_build); | |
1da177e4 LT |
1138 | } else |
1139 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE; | |
1140 | ||
1141 | /* Send command packet to the board */ | |
1142 | twa_post_command_packet(tw_dev, request_id, 1); | |
1143 | ||
1144 | /* Poll for completion */ | |
1145 | if (twa_poll_response(tw_dev, request_id, 30)) { | |
1146 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "No valid response during init connection"); | |
1147 | } else { | |
1148 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | |
75913d9b AR |
1149 | *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl); |
1150 | *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id); | |
1151 | *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch); | |
1152 | *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build); | |
1153 | *init_connect_result = le32_to_cpu(tw_initconnect->result); | |
1da177e4 LT |
1154 | } |
1155 | retval = 0; | |
1156 | } | |
1157 | ||
1158 | tw_dev->posted_request_count--; | |
1159 | tw_dev->state[request_id] = TW_S_INITIAL; | |
1160 | ||
1161 | return retval; | |
1162 | } /* End twa_initconnection() */ | |
1163 | ||
1164 | /* This function will initialize the fields of a device extension */ | |
1165 | static int twa_initialize_device_extension(TW_Device_Extension *tw_dev) | |
1166 | { | |
1167 | int i, retval = 1; | |
1168 | ||
1169 | /* Initialize command packet buffers */ | |
1170 | if (twa_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) { | |
1171 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Command packet memory allocation failed"); | |
1172 | goto out; | |
1173 | } | |
1174 | ||
1175 | /* Initialize generic buffer */ | |
1176 | if (twa_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) { | |
1177 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x17, "Generic memory allocation failed"); | |
1178 | goto out; | |
1179 | } | |
1180 | ||
1181 | /* Allocate event info space */ | |
dd00cc48 | 1182 | tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL); |
1da177e4 LT |
1183 | if (!tw_dev->event_queue[0]) { |
1184 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed"); | |
1185 | goto out; | |
1186 | } | |
1187 | ||
1da177e4 LT |
1188 | |
1189 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1190 | tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event))); | |
1191 | tw_dev->free_queue[i] = i; | |
1192 | tw_dev->state[i] = TW_S_INITIAL; | |
1193 | } | |
1194 | ||
1195 | tw_dev->pending_head = TW_Q_START; | |
1196 | tw_dev->pending_tail = TW_Q_START; | |
1197 | tw_dev->free_head = TW_Q_START; | |
1198 | tw_dev->free_tail = TW_Q_START; | |
1199 | tw_dev->error_sequence_id = 1; | |
1200 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1201 | ||
a12e25bd | 1202 | mutex_init(&tw_dev->ioctl_lock); |
1da177e4 LT |
1203 | init_waitqueue_head(&tw_dev->ioctl_wqueue); |
1204 | ||
1205 | retval = 0; | |
1206 | out: | |
1207 | return retval; | |
1208 | } /* End twa_initialize_device_extension() */ | |
1209 | ||
1210 | /* This function is the interrupt service routine */ | |
7d12e780 | 1211 | static irqreturn_t twa_interrupt(int irq, void *dev_instance) |
1da177e4 LT |
1212 | { |
1213 | int request_id, error = 0; | |
1214 | u32 status_reg_value; | |
1215 | TW_Response_Queue response_que; | |
1216 | TW_Command_Full *full_command_packet; | |
1da177e4 LT |
1217 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; |
1218 | int handled = 0; | |
1219 | ||
1220 | /* Get the per adapter lock */ | |
1221 | spin_lock(tw_dev->host->host_lock); | |
1222 | ||
1223 | /* Read the registers */ | |
1224 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1225 | ||
1226 | /* Check if this is our interrupt, otherwise bail */ | |
1227 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) | |
1228 | goto twa_interrupt_bail; | |
1229 | ||
1230 | handled = 1; | |
1231 | ||
4039c30e AR |
1232 | /* If we are resetting, bail */ |
1233 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) | |
1234 | goto twa_interrupt_bail; | |
1235 | ||
1da177e4 LT |
1236 | /* Check controller for errors */ |
1237 | if (twa_check_bits(status_reg_value)) { | |
1238 | if (twa_decode_bits(tw_dev, status_reg_value)) { | |
1239 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1240 | goto twa_interrupt_bail; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | /* Handle host interrupt */ | |
1245 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) | |
1246 | TW_CLEAR_HOST_INTERRUPT(tw_dev); | |
1247 | ||
1248 | /* Handle attention interrupt */ | |
1249 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { | |
1250 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
1251 | if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) { | |
1252 | twa_get_request_id(tw_dev, &request_id); | |
1253 | ||
1254 | error = twa_aen_read_queue(tw_dev, request_id); | |
1255 | if (error) { | |
1256 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1257 | twa_free_request_id(tw_dev, request_id); | |
1258 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
1259 | } | |
1260 | } | |
1261 | } | |
1262 | ||
1263 | /* Handle command interrupt */ | |
1264 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { | |
1265 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1266 | /* Drain as many pending commands as we can */ | |
1267 | while (tw_dev->pending_request_count > 0) { | |
1268 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; | |
1269 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
1270 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x19, "Found request id that wasn't pending"); | |
1271 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1272 | goto twa_interrupt_bail; | |
1273 | } | |
1274 | if (twa_post_command_packet(tw_dev, request_id, 1)==0) { | |
1275 | tw_dev->pending_head = (tw_dev->pending_head + 1) % TW_Q_LENGTH; | |
1276 | tw_dev->pending_request_count--; | |
1277 | } else { | |
1278 | /* If we get here, we will continue re-posting on the next command interrupt */ | |
1279 | break; | |
1280 | } | |
1281 | } | |
1282 | } | |
1283 | ||
1284 | /* Handle response interrupt */ | |
1285 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { | |
1286 | ||
1287 | /* Drain the response queue from the board */ | |
1288 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
1289 | /* Complete the response */ | |
1290 | response_que.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1291 | request_id = TW_RESID_OUT(response_que.response_id); | |
1292 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1293 | error = 0; | |
1da177e4 LT |
1294 | /* Check for command packet errors */ |
1295 | if (full_command_packet->command.newcommand.status != 0) { | |
9bcf0910 | 1296 | if (tw_dev->srb[request_id] != NULL) { |
1da177e4 LT |
1297 | error = twa_fill_sense(tw_dev, request_id, 1, 1); |
1298 | } else { | |
1299 | /* Skip ioctl error prints */ | |
1300 | if (request_id != tw_dev->chrdev_request_id) { | |
1301 | error = twa_fill_sense(tw_dev, request_id, 0, 1); | |
1302 | } | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | /* Check for correct state */ | |
1307 | if (tw_dev->state[request_id] != TW_S_POSTED) { | |
9bcf0910 | 1308 | if (tw_dev->srb[request_id] != NULL) { |
1da177e4 LT |
1309 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted"); |
1310 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1311 | goto twa_interrupt_bail; | |
1312 | } | |
1313 | } | |
1314 | ||
1315 | /* Check for internal command completion */ | |
9bcf0910 | 1316 | if (tw_dev->srb[request_id] == NULL) { |
1da177e4 LT |
1317 | if (request_id != tw_dev->chrdev_request_id) { |
1318 | if (twa_aen_complete(tw_dev, request_id)) | |
1319 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt"); | |
1320 | } else { | |
1321 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1322 | wake_up(&tw_dev->ioctl_wqueue); | |
1323 | } | |
1324 | } else { | |
0debe01d FT |
1325 | struct scsi_cmnd *cmd; |
1326 | ||
1327 | cmd = tw_dev->srb[request_id]; | |
1328 | ||
1da177e4 LT |
1329 | twa_scsiop_execute_scsi_complete(tw_dev, request_id); |
1330 | /* If no error command was a success */ | |
1331 | if (error == 0) { | |
0debe01d | 1332 | cmd->result = (DID_OK << 16); |
1da177e4 LT |
1333 | } |
1334 | ||
1335 | /* If error, command failed */ | |
1336 | if (error == 1) { | |
1337 | /* Ask for a host reset */ | |
0debe01d | 1338 | cmd->result = (DID_OK << 16) | (CHECK_CONDITION << 1); |
1da177e4 LT |
1339 | } |
1340 | ||
1341 | /* Report residual bytes for single sgl */ | |
0debe01d FT |
1342 | if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) { |
1343 | if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id])) | |
1344 | scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length); | |
1da177e4 LT |
1345 | } |
1346 | ||
1347 | /* Now complete the io */ | |
1348 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1349 | twa_free_request_id(tw_dev, request_id); | |
1350 | tw_dev->posted_request_count--; | |
1351 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1352 | twa_unmap_scsi_data(tw_dev, request_id); | |
1353 | } | |
1354 | ||
1355 | /* Check for valid status after each drain */ | |
1356 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1357 | if (twa_check_bits(status_reg_value)) { | |
1358 | if (twa_decode_bits(tw_dev, status_reg_value)) { | |
1359 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1360 | goto twa_interrupt_bail; | |
1361 | } | |
1362 | } | |
1363 | } | |
1364 | } | |
1365 | ||
1366 | twa_interrupt_bail: | |
1367 | spin_unlock(tw_dev->host->host_lock); | |
1368 | return IRQ_RETVAL(handled); | |
1369 | } /* End twa_interrupt() */ | |
1370 | ||
1371 | /* This function will load the request id and various sgls for ioctls */ | |
0e78d158 | 1372 | 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 |
1373 | { |
1374 | TW_Command *oldcommand; | |
1375 | TW_Command_Apache *newcommand; | |
1376 | TW_SG_Entry *sgl; | |
0e78d158 AR |
1377 | unsigned int pae = 0; |
1378 | ||
1379 | if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4)) | |
1380 | pae = 1; | |
1da177e4 LT |
1381 | |
1382 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
1383 | newcommand = &full_command_packet->command.newcommand; | |
4039c30e AR |
1384 | newcommand->request_id__lunl = |
1385 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id)); | |
53ca3535 AR |
1386 | if (length) { |
1387 | newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); | |
1388 | newcommand->sg_list[0].length = cpu_to_le32(length); | |
1389 | } | |
1da177e4 | 1390 | newcommand->sgl_entries__lunh = |
53ca3535 | 1391 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0)); |
1da177e4 LT |
1392 | } else { |
1393 | oldcommand = &full_command_packet->command.oldcommand; | |
1394 | oldcommand->request_id = request_id; | |
1395 | ||
1396 | if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) { | |
1397 | /* Load the sg list */ | |
0e78d158 AR |
1398 | if (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA) |
1399 | sgl = (TW_SG_Entry *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry)/4) + pae); | |
1400 | else | |
1401 | sgl = (TW_SG_Entry *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset)); | |
75913d9b AR |
1402 | sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); |
1403 | sgl->length = cpu_to_le32(length); | |
1da177e4 | 1404 | |
0e78d158 | 1405 | oldcommand->size += pae; |
1da177e4 LT |
1406 | } |
1407 | } | |
1408 | } /* End twa_load_sgl() */ | |
1409 | ||
1410 | /* This function will perform a pci-dma mapping for a scatter gather list */ | |
1411 | static int twa_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id) | |
1412 | { | |
1413 | int use_sg; | |
1414 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1da177e4 | 1415 | |
0debe01d FT |
1416 | use_sg = scsi_dma_map(cmd); |
1417 | if (!use_sg) | |
1418 | return 0; | |
1419 | else if (use_sg < 0) { | |
1da177e4 | 1420 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list"); |
0debe01d | 1421 | return 0; |
1da177e4 LT |
1422 | } |
1423 | ||
1424 | cmd->SCp.phase = TW_PHASE_SGLIST; | |
1425 | cmd->SCp.have_data_in = use_sg; | |
1da177e4 | 1426 | |
0debe01d FT |
1427 | return use_sg; |
1428 | } /* End twa_map_scsi_sg_data() */ | |
1da177e4 LT |
1429 | |
1430 | /* This function will poll for a response interrupt of a request */ | |
1431 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) | |
1432 | { | |
1433 | int retval = 1, found = 0, response_request_id; | |
1434 | TW_Response_Queue response_queue; | |
1435 | TW_Command_Full *full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1436 | ||
1437 | if (twa_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds) == 0) { | |
1438 | response_queue.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1439 | response_request_id = TW_RESID_OUT(response_queue.response_id); | |
1440 | if (request_id != response_request_id) { | |
1441 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "Found unexpected request id while polling for response"); | |
1442 | goto out; | |
1443 | } | |
1444 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
1445 | if (full_command_packet->command.newcommand.status != 0) { | |
1446 | /* bad response */ | |
1447 | twa_fill_sense(tw_dev, request_id, 0, 0); | |
1448 | goto out; | |
1449 | } | |
1450 | found = 1; | |
1451 | } else { | |
1452 | if (full_command_packet->command.oldcommand.status != 0) { | |
1453 | /* bad response */ | |
1454 | twa_fill_sense(tw_dev, request_id, 0, 0); | |
1455 | goto out; | |
1456 | } | |
1457 | found = 1; | |
1458 | } | |
1459 | } | |
1460 | ||
1461 | if (found) | |
1462 | retval = 0; | |
1463 | out: | |
1464 | return retval; | |
1465 | } /* End twa_poll_response() */ | |
1466 | ||
1467 | /* This function will poll the status register for a flag */ | |
1468 | static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
1469 | { | |
1470 | u32 status_reg_value; | |
1471 | unsigned long before; | |
1472 | int retval = 1; | |
1473 | ||
1474 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1475 | before = jiffies; | |
1476 | ||
1477 | if (twa_check_bits(status_reg_value)) | |
1478 | twa_decode_bits(tw_dev, status_reg_value); | |
1479 | ||
1480 | while ((status_reg_value & flag) != flag) { | |
1481 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1482 | ||
1483 | if (twa_check_bits(status_reg_value)) | |
1484 | twa_decode_bits(tw_dev, status_reg_value); | |
1485 | ||
1486 | if (time_after(jiffies, before + HZ * seconds)) | |
1487 | goto out; | |
1488 | ||
1489 | msleep(50); | |
1490 | } | |
1491 | retval = 0; | |
1492 | out: | |
1493 | return retval; | |
1494 | } /* End twa_poll_status() */ | |
1495 | ||
1496 | /* This function will poll the status register for disappearance of a flag */ | |
1497 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
1498 | { | |
1499 | u32 status_reg_value; | |
1500 | unsigned long before; | |
1501 | int retval = 1; | |
1502 | ||
1503 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1504 | before = jiffies; | |
1505 | ||
1506 | if (twa_check_bits(status_reg_value)) | |
1507 | twa_decode_bits(tw_dev, status_reg_value); | |
1508 | ||
1509 | while ((status_reg_value & flag) != 0) { | |
1510 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1511 | if (twa_check_bits(status_reg_value)) | |
1512 | twa_decode_bits(tw_dev, status_reg_value); | |
1513 | ||
1514 | if (time_after(jiffies, before + HZ * seconds)) | |
1515 | goto out; | |
1516 | ||
1517 | msleep(50); | |
1518 | } | |
1519 | retval = 0; | |
1520 | out: | |
1521 | return retval; | |
1522 | } /* End twa_poll_status_gone() */ | |
1523 | ||
1524 | /* This function will attempt to post a command packet to the board */ | |
1525 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal) | |
1526 | { | |
1527 | u32 status_reg_value; | |
1528 | dma_addr_t command_que_value; | |
1529 | int retval = 1; | |
1530 | ||
1531 | command_que_value = tw_dev->command_packet_phys[request_id]; | |
4039c30e AR |
1532 | |
1533 | /* For 9650SE write low 4 bytes first */ | |
0e78d158 AR |
1534 | if ((tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9650SE) || |
1535 | (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)) { | |
4039c30e AR |
1536 | command_que_value += TW_COMMAND_OFFSET; |
1537 | writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR_LARGE(tw_dev)); | |
1538 | } | |
1539 | ||
1da177e4 LT |
1540 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); |
1541 | ||
1542 | if (twa_check_bits(status_reg_value)) | |
1543 | twa_decode_bits(tw_dev, status_reg_value); | |
1544 | ||
1545 | if (((tw_dev->pending_request_count > 0) && (tw_dev->state[request_id] != TW_S_PENDING)) || (status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL)) { | |
1546 | ||
1547 | /* Only pend internal driver commands */ | |
1548 | if (!internal) { | |
1549 | retval = SCSI_MLQUEUE_HOST_BUSY; | |
1550 | goto out; | |
1551 | } | |
1552 | ||
1553 | /* Couldn't post the command packet, so we do it later */ | |
1554 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
1555 | tw_dev->state[request_id] = TW_S_PENDING; | |
1556 | tw_dev->pending_request_count++; | |
1557 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { | |
1558 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; | |
1559 | } | |
1560 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; | |
1561 | tw_dev->pending_tail = (tw_dev->pending_tail + 1) % TW_Q_LENGTH; | |
1562 | } | |
1563 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); | |
1564 | goto out; | |
1565 | } else { | |
0e78d158 AR |
1566 | if ((tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9650SE) || |
1567 | (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9690SA)) { | |
4039c30e AR |
1568 | /* Now write upper 4 bytes */ |
1569 | writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR_LARGE(tw_dev) + 0x4); | |
1da177e4 | 1570 | } else { |
4039c30e AR |
1571 | if (sizeof(dma_addr_t) > 4) { |
1572 | command_que_value += TW_COMMAND_OFFSET; | |
1573 | writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1574 | writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR(tw_dev) + 0x4); | |
1575 | } else { | |
1576 | writel(TW_COMMAND_OFFSET + command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1577 | } | |
1da177e4 LT |
1578 | } |
1579 | tw_dev->state[request_id] = TW_S_POSTED; | |
1580 | tw_dev->posted_request_count++; | |
1581 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { | |
1582 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | |
1583 | } | |
1584 | } | |
1585 | retval = 0; | |
1586 | out: | |
1587 | return retval; | |
1588 | } /* End twa_post_command_packet() */ | |
1589 | ||
1590 | /* This function will reset a device extension */ | |
0e78d158 | 1591 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev) |
1da177e4 LT |
1592 | { |
1593 | int i = 0; | |
1594 | int retval = 1; | |
1595 | unsigned long flags = 0; | |
1596 | ||
1597 | set_bit(TW_IN_RESET, &tw_dev->flags); | |
1598 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1599 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1600 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1601 | ||
1602 | /* Abort all requests that are in progress */ | |
1603 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1604 | if ((tw_dev->state[i] != TW_S_FINISHED) && | |
1605 | (tw_dev->state[i] != TW_S_INITIAL) && | |
1606 | (tw_dev->state[i] != TW_S_COMPLETED)) { | |
1607 | if (tw_dev->srb[i]) { | |
1608 | tw_dev->srb[i]->result = (DID_RESET << 16); | |
1609 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); | |
1610 | twa_unmap_scsi_data(tw_dev, i); | |
1611 | } | |
1612 | } | |
1613 | } | |
1614 | ||
1615 | /* Reset queues and counts */ | |
1616 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1617 | tw_dev->free_queue[i] = i; | |
1618 | tw_dev->state[i] = TW_S_INITIAL; | |
1619 | } | |
1620 | tw_dev->free_head = TW_Q_START; | |
1621 | tw_dev->free_tail = TW_Q_START; | |
1622 | tw_dev->posted_request_count = 0; | |
1623 | tw_dev->pending_request_count = 0; | |
1624 | tw_dev->pending_head = TW_Q_START; | |
1625 | tw_dev->pending_tail = TW_Q_START; | |
1626 | tw_dev->reset_print = 0; | |
1627 | ||
1628 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1629 | ||
1630 | if (twa_reset_sequence(tw_dev, 1)) | |
1631 | goto out; | |
1632 | ||
1633 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
4039c30e AR |
1634 | clear_bit(TW_IN_RESET, &tw_dev->flags); |
1635 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1da177e4 | 1636 | |
1da177e4 LT |
1637 | retval = 0; |
1638 | out: | |
1639 | return retval; | |
1640 | } /* End twa_reset_device_extension() */ | |
1641 | ||
1642 | /* This function will reset a controller */ | |
1643 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset) | |
1644 | { | |
1645 | int tries = 0, retval = 1, flashed = 0, do_soft_reset = soft_reset; | |
1646 | ||
1647 | while (tries < TW_MAX_RESET_TRIES) { | |
49bfd8db | 1648 | if (do_soft_reset) { |
1da177e4 | 1649 | TW_SOFT_RESET(tw_dev); |
49bfd8db AR |
1650 | /* Clear pchip/response queue on 9550SX */ |
1651 | if (twa_empty_response_queue_large(tw_dev)) { | |
1652 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x36, "Response queue (large) empty failed during reset sequence"); | |
1653 | do_soft_reset = 1; | |
1654 | tries++; | |
1655 | continue; | |
1656 | } | |
1657 | } | |
1da177e4 LT |
1658 | |
1659 | /* Make sure controller is in a good state */ | |
1660 | if (twa_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY | (do_soft_reset == 1 ? TW_STATUS_ATTENTION_INTERRUPT : 0), 60)) { | |
1661 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Microcontroller not ready during reset sequence"); | |
1662 | do_soft_reset = 1; | |
1663 | tries++; | |
1664 | continue; | |
1665 | } | |
1666 | ||
1667 | /* Empty response queue */ | |
1668 | if (twa_empty_response_queue(tw_dev)) { | |
1669 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Response queue empty failed during reset sequence"); | |
1670 | do_soft_reset = 1; | |
1671 | tries++; | |
1672 | continue; | |
1673 | } | |
1674 | ||
1675 | flashed = 0; | |
1676 | ||
1677 | /* Check for compatibility/flash */ | |
1678 | if (twa_check_srl(tw_dev, &flashed)) { | |
1679 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Compatibility check failed during reset sequence"); | |
1680 | do_soft_reset = 1; | |
1681 | tries++; | |
1682 | continue; | |
1683 | } else { | |
1684 | if (flashed) { | |
1685 | tries++; | |
1686 | continue; | |
1687 | } | |
1688 | } | |
1689 | ||
1690 | /* Drain the AEN queue */ | |
1691 | if (twa_aen_drain_queue(tw_dev, soft_reset)) { | |
1692 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x22, "AEN drain failed during reset sequence"); | |
1693 | do_soft_reset = 1; | |
1694 | tries++; | |
1695 | continue; | |
1696 | } | |
1697 | ||
1698 | /* If we got here, controller is in a good state */ | |
1699 | retval = 0; | |
1700 | goto out; | |
1701 | } | |
1702 | out: | |
1703 | return retval; | |
1704 | } /* End twa_reset_sequence() */ | |
1705 | ||
1706 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | |
1707 | static int twa_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) | |
1708 | { | |
1709 | int heads, sectors, cylinders; | |
1710 | TW_Device_Extension *tw_dev; | |
1711 | ||
1712 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | |
1713 | ||
1714 | if (capacity >= 0x200000) { | |
1715 | heads = 255; | |
1716 | sectors = 63; | |
1717 | cylinders = sector_div(capacity, heads * sectors); | |
1718 | } else { | |
1719 | heads = 64; | |
1720 | sectors = 32; | |
1721 | cylinders = sector_div(capacity, heads * sectors); | |
1722 | } | |
1723 | ||
1724 | geom[0] = heads; | |
1725 | geom[1] = sectors; | |
1726 | geom[2] = cylinders; | |
1727 | ||
1728 | return 0; | |
1729 | } /* End twa_scsi_biosparam() */ | |
1730 | ||
1731 | /* This is the new scsi eh reset function */ | |
1732 | static int twa_scsi_eh_reset(struct scsi_cmnd *SCpnt) | |
1733 | { | |
1734 | TW_Device_Extension *tw_dev = NULL; | |
1735 | int retval = FAILED; | |
1736 | ||
1737 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1738 | ||
1da177e4 LT |
1739 | tw_dev->num_resets++; |
1740 | ||
017560fc JG |
1741 | sdev_printk(KERN_WARNING, SCpnt->device, |
1742 | "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n", | |
1743 | TW_DRIVER, 0x2c, SCpnt->cmnd[0]); | |
1da177e4 | 1744 | |
4039c30e AR |
1745 | /* Make sure we are not issuing an ioctl or resetting from ioctl */ |
1746 | mutex_lock(&tw_dev->ioctl_lock); | |
1747 | ||
1da177e4 | 1748 | /* Now reset the card and some of the device extension data */ |
0e78d158 | 1749 | if (twa_reset_device_extension(tw_dev)) { |
1da177e4 LT |
1750 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2b, "Controller reset failed during scsi host reset"); |
1751 | goto out; | |
1752 | } | |
1753 | ||
1754 | retval = SUCCESS; | |
1755 | out: | |
4039c30e | 1756 | mutex_unlock(&tw_dev->ioctl_lock); |
1da177e4 LT |
1757 | return retval; |
1758 | } /* End twa_scsi_eh_reset() */ | |
1759 | ||
1760 | /* This is the main scsi queue function to handle scsi opcodes */ | |
1761 | static int twa_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) | |
1762 | { | |
1763 | int request_id, retval; | |
1764 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1765 | ||
4039c30e AR |
1766 | /* If we are resetting due to timed out ioctl, report as busy */ |
1767 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) { | |
1768 | retval = SCSI_MLQUEUE_HOST_BUSY; | |
1769 | goto out; | |
1770 | } | |
1771 | ||
1da177e4 | 1772 | /* Check if this FW supports luns */ |
4039c30e | 1773 | if ((SCpnt->device->lun != 0) && (tw_dev->tw_compat_info.working_srl < TW_FW_SRL_LUNS_SUPPORTED)) { |
1da177e4 LT |
1774 | SCpnt->result = (DID_BAD_TARGET << 16); |
1775 | done(SCpnt); | |
1776 | retval = 0; | |
1777 | goto out; | |
1778 | } | |
1779 | ||
1780 | /* Save done function into scsi_cmnd struct */ | |
1781 | SCpnt->scsi_done = done; | |
1782 | ||
1783 | /* Get a free request id */ | |
1784 | twa_get_request_id(tw_dev, &request_id); | |
1785 | ||
1786 | /* Save the scsi command for use by the ISR */ | |
1787 | tw_dev->srb[request_id] = SCpnt; | |
1788 | ||
1789 | /* Initialize phase to zero */ | |
1790 | SCpnt->SCp.phase = TW_PHASE_INITIAL; | |
1791 | ||
1792 | retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); | |
1793 | switch (retval) { | |
1794 | case SCSI_MLQUEUE_HOST_BUSY: | |
1795 | twa_free_request_id(tw_dev, request_id); | |
1796 | break; | |
1797 | case 1: | |
1798 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1799 | twa_free_request_id(tw_dev, request_id); | |
1800 | SCpnt->result = (DID_ERROR << 16); | |
1801 | done(SCpnt); | |
1802 | retval = 0; | |
1803 | } | |
1804 | out: | |
1805 | return retval; | |
1806 | } /* End twa_scsi_queue() */ | |
1807 | ||
1808 | /* This function hands scsi cdb's to the firmware */ | |
1809 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg) | |
1810 | { | |
1811 | TW_Command_Full *full_command_packet; | |
1812 | TW_Command_Apache *command_packet; | |
1813 | u32 num_sectors = 0x0; | |
1814 | int i, sg_count; | |
1815 | struct scsi_cmnd *srb = NULL; | |
0debe01d | 1816 | struct scatterlist *sglist = NULL, *sg; |
1da177e4 LT |
1817 | int retval = 1; |
1818 | ||
1819 | if (tw_dev->srb[request_id]) { | |
1da177e4 | 1820 | srb = tw_dev->srb[request_id]; |
0debe01d FT |
1821 | if (scsi_sglist(srb)) |
1822 | sglist = scsi_sglist(srb); | |
1da177e4 LT |
1823 | } |
1824 | ||
1825 | /* Initialize command packet */ | |
1826 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1827 | full_command_packet->header.header_desc.size_header = 128; | |
1828 | full_command_packet->header.status_block.error = 0; | |
1829 | full_command_packet->header.status_block.severity__reserved = 0; | |
1830 | ||
1831 | command_packet = &full_command_packet->command.newcommand; | |
1832 | command_packet->status = 0; | |
1833 | command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI); | |
1834 | ||
1835 | /* We forced 16 byte cdb use earlier */ | |
1836 | if (!cdb) | |
1837 | memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN); | |
1838 | else | |
1839 | memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN); | |
1840 | ||
1841 | if (srb) { | |
1842 | command_packet->unit = srb->device->id; | |
1843 | command_packet->request_id__lunl = | |
75913d9b | 1844 | cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id)); |
1da177e4 LT |
1845 | } else { |
1846 | command_packet->request_id__lunl = | |
75913d9b | 1847 | cpu_to_le16(TW_REQ_LUN_IN(0, request_id)); |
1da177e4 LT |
1848 | command_packet->unit = 0; |
1849 | } | |
1850 | ||
1851 | command_packet->sgl_offset = 16; | |
1852 | ||
1853 | if (!sglistarg) { | |
1854 | /* Map sglist from scsi layer to cmd packet */ | |
1da177e4 | 1855 | |
0debe01d FT |
1856 | if (scsi_sg_count(srb)) { |
1857 | if ((scsi_sg_count(srb) == 1) && | |
1858 | (scsi_bufflen(srb) < TW_MIN_SGL_LENGTH)) { | |
035f5e06 FT |
1859 | if (srb->sc_data_direction == DMA_TO_DEVICE || |
1860 | srb->sc_data_direction == DMA_BIDIRECTIONAL) | |
1861 | scsi_sg_copy_to_buffer(srb, | |
1862 | tw_dev->generic_buffer_virt[request_id], | |
1863 | TW_SECTOR_SIZE); | |
75913d9b AR |
1864 | command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
1865 | command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH); | |
1da177e4 LT |
1866 | } else { |
1867 | sg_count = twa_map_scsi_sg_data(tw_dev, request_id); | |
1868 | if (sg_count == 0) | |
1869 | goto out; | |
1870 | ||
0debe01d FT |
1871 | scsi_for_each_sg(srb, sg, sg_count, i) { |
1872 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg)); | |
1873 | command_packet->sg_list[i].length = cpu_to_le32(sg_dma_len(sg)); | |
75913d9b | 1874 | if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { |
1da177e4 LT |
1875 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi"); |
1876 | goto out; | |
1877 | } | |
1878 | } | |
1879 | } | |
0debe01d | 1880 | 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 |
1881 | } |
1882 | } else { | |
1883 | /* Internal cdb post */ | |
1884 | for (i = 0; i < use_sg; i++) { | |
75913d9b AR |
1885 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address); |
1886 | command_packet->sg_list[i].length = cpu_to_le32(sglistarg[i].length); | |
1887 | if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { | |
1da177e4 LT |
1888 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2f, "Found unaligned sgl address during internal post"); |
1889 | goto out; | |
1890 | } | |
1891 | } | |
75913d9b | 1892 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg)); |
1da177e4 LT |
1893 | } |
1894 | ||
1895 | if (srb) { | |
1896 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) | |
1897 | num_sectors = (u32)srb->cmnd[4]; | |
1898 | ||
1899 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) | |
1900 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); | |
1901 | } | |
1902 | ||
1903 | /* Update sector statistic */ | |
1904 | tw_dev->sector_count = num_sectors; | |
1905 | if (tw_dev->sector_count > tw_dev->max_sector_count) | |
1906 | tw_dev->max_sector_count = tw_dev->sector_count; | |
1907 | ||
1908 | /* Update SG statistics */ | |
1909 | if (srb) { | |
0debe01d | 1910 | tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]); |
1da177e4 LT |
1911 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) |
1912 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | |
1913 | } | |
1914 | ||
1915 | /* Now post the command to the board */ | |
1916 | if (srb) { | |
1917 | retval = twa_post_command_packet(tw_dev, request_id, 0); | |
1918 | } else { | |
1919 | twa_post_command_packet(tw_dev, request_id, 1); | |
1920 | retval = 0; | |
1921 | } | |
1922 | out: | |
1923 | return retval; | |
1924 | } /* End twa_scsiop_execute_scsi() */ | |
1925 | ||
1926 | /* This function completes an execute scsi operation */ | |
1927 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id) | |
1928 | { | |
0debe01d | 1929 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; |
0debe01d FT |
1930 | |
1931 | if (scsi_bufflen(cmd) < TW_MIN_SGL_LENGTH && | |
1932 | (cmd->sc_data_direction == DMA_FROM_DEVICE || | |
1933 | cmd->sc_data_direction == DMA_BIDIRECTIONAL)) { | |
b1192d5e | 1934 | if (scsi_sg_count(cmd) == 1) { |
035f5e06 FT |
1935 | void *buf = tw_dev->generic_buffer_virt[request_id]; |
1936 | ||
035f5e06 | 1937 | scsi_sg_copy_from_buffer(cmd, buf, TW_SECTOR_SIZE); |
d327d082 | 1938 | } |
1da177e4 LT |
1939 | } |
1940 | } /* End twa_scsiop_execute_scsi_complete() */ | |
1941 | ||
1942 | /* This function tells the controller to shut down */ | |
1943 | static void __twa_shutdown(TW_Device_Extension *tw_dev) | |
1944 | { | |
1945 | /* Disable interrupts */ | |
1946 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1947 | ||
4039c30e AR |
1948 | /* Free up the IRQ */ |
1949 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
1950 | ||
1da177e4 LT |
1951 | printk(KERN_WARNING "3w-9xxx: Shutting down host %d.\n", tw_dev->host->host_no); |
1952 | ||
1953 | /* Tell the card we are shutting down */ | |
1954 | if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | |
1955 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x31, "Connection shutdown failed"); | |
1956 | } else { | |
1957 | printk(KERN_WARNING "3w-9xxx: Shutdown complete.\n"); | |
1958 | } | |
1959 | ||
1960 | /* Clear all interrupts just before exit */ | |
1961 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1962 | } /* End __twa_shutdown() */ | |
1963 | ||
1964 | /* Wrapper for __twa_shutdown */ | |
d18c3db5 | 1965 | static void twa_shutdown(struct pci_dev *pdev) |
1da177e4 | 1966 | { |
d18c3db5 | 1967 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
1da177e4 LT |
1968 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
1969 | ||
1970 | __twa_shutdown(tw_dev); | |
1971 | } /* End twa_shutdown() */ | |
1972 | ||
1973 | /* This function will look up a string */ | |
1974 | static char *twa_string_lookup(twa_message_type *table, unsigned int code) | |
1975 | { | |
1976 | int index; | |
1977 | ||
1978 | for (index = 0; ((code != table[index].code) && | |
1979 | (table[index].text != (char *)0)); index++); | |
1980 | return(table[index].text); | |
1981 | } /* End twa_string_lookup() */ | |
1982 | ||
1983 | /* This function will perform a pci-dma unmap */ | |
1984 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) | |
1985 | { | |
1986 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1da177e4 | 1987 | |
8454e988 AR |
1988 | if (cmd->SCp.phase == TW_PHASE_SGLIST) |
1989 | scsi_dma_unmap(cmd); | |
1da177e4 LT |
1990 | } /* End twa_unmap_scsi_data() */ |
1991 | ||
1992 | /* scsi_host_template initializer */ | |
1993 | static struct scsi_host_template driver_template = { | |
1994 | .module = THIS_MODULE, | |
1995 | .name = "3ware 9000 Storage Controller", | |
1996 | .queuecommand = twa_scsi_queue, | |
1997 | .eh_host_reset_handler = twa_scsi_eh_reset, | |
1998 | .bios_param = twa_scsi_biosparam, | |
1999 | .change_queue_depth = twa_change_queue_depth, | |
2000 | .can_queue = TW_Q_LENGTH-2, | |
2001 | .this_id = -1, | |
2002 | .sg_tablesize = TW_APACHE_MAX_SGL_LENGTH, | |
2003 | .max_sectors = TW_MAX_SECTORS, | |
2004 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | |
2005 | .use_clustering = ENABLE_CLUSTERING, | |
2006 | .shost_attrs = twa_host_attrs, | |
2007 | .emulated = 1 | |
2008 | }; | |
2009 | ||
2010 | /* This function will probe and initialize a card */ | |
2011 | static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) | |
2012 | { | |
2013 | struct Scsi_Host *host = NULL; | |
2014 | TW_Device_Extension *tw_dev; | |
3dabec71 | 2015 | unsigned long mem_addr, mem_len; |
1da177e4 LT |
2016 | int retval = -ENODEV; |
2017 | ||
2018 | retval = pci_enable_device(pdev); | |
2019 | if (retval) { | |
2020 | TW_PRINTK(host, TW_DRIVER, 0x34, "Failed to enable pci device"); | |
2021 | goto out_disable_device; | |
2022 | } | |
2023 | ||
2024 | pci_set_master(pdev); | |
1e6c38ce | 2025 | pci_try_set_mwi(pdev); |
1da177e4 | 2026 | |
6a35528a YH |
2027 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) |
2028 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) | |
284901a9 YH |
2029 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) |
2030 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { | |
0e78d158 AR |
2031 | TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask"); |
2032 | retval = -ENODEV; | |
2033 | goto out_disable_device; | |
2034 | } | |
1da177e4 LT |
2035 | |
2036 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | |
2037 | if (!host) { | |
2038 | TW_PRINTK(host, TW_DRIVER, 0x24, "Failed to allocate memory for device extension"); | |
2039 | retval = -ENOMEM; | |
2040 | goto out_disable_device; | |
2041 | } | |
2042 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
2043 | ||
1da177e4 LT |
2044 | /* Save values to device extension */ |
2045 | tw_dev->host = host; | |
2046 | tw_dev->tw_pci_dev = pdev; | |
2047 | ||
2048 | if (twa_initialize_device_extension(tw_dev)) { | |
2049 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension"); | |
2050 | goto out_free_device_extension; | |
2051 | } | |
2052 | ||
2053 | /* Request IO regions */ | |
2054 | retval = pci_request_regions(pdev, "3w-9xxx"); | |
2055 | if (retval) { | |
2056 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Failed to get mem region"); | |
2057 | goto out_free_device_extension; | |
2058 | } | |
2059 | ||
3dabec71 | 2060 | if (pdev->device == PCI_DEVICE_ID_3WARE_9000) { |
49bfd8db | 2061 | mem_addr = pci_resource_start(pdev, 1); |
3dabec71 AR |
2062 | mem_len = pci_resource_len(pdev, 1); |
2063 | } else { | |
49bfd8db | 2064 | mem_addr = pci_resource_start(pdev, 2); |
3dabec71 AR |
2065 | mem_len = pci_resource_len(pdev, 2); |
2066 | } | |
1da177e4 LT |
2067 | |
2068 | /* Save base address */ | |
3dabec71 | 2069 | tw_dev->base_addr = ioremap(mem_addr, mem_len); |
1da177e4 LT |
2070 | if (!tw_dev->base_addr) { |
2071 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap"); | |
2072 | goto out_release_mem_region; | |
2073 | } | |
2074 | ||
2075 | /* Disable interrupts on the card */ | |
2076 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2077 | ||
2078 | /* Initialize the card */ | |
2079 | if (twa_reset_sequence(tw_dev, 0)) | |
4039c30e | 2080 | goto out_iounmap; |
1da177e4 LT |
2081 | |
2082 | /* Set host specific parameters */ | |
0e78d158 AR |
2083 | if ((pdev->device == PCI_DEVICE_ID_3WARE_9650SE) || |
2084 | (pdev->device == PCI_DEVICE_ID_3WARE_9690SA)) | |
4039c30e AR |
2085 | host->max_id = TW_MAX_UNITS_9650SE; |
2086 | else | |
2087 | host->max_id = TW_MAX_UNITS; | |
2088 | ||
1da177e4 LT |
2089 | host->max_cmd_len = TW_MAX_CDB_LEN; |
2090 | ||
2091 | /* Channels aren't supported by adapter */ | |
4039c30e | 2092 | host->max_lun = TW_MAX_LUNS(tw_dev->tw_compat_info.working_srl); |
1da177e4 LT |
2093 | host->max_channel = 0; |
2094 | ||
2095 | /* Register the card with the kernel SCSI layer */ | |
2096 | retval = scsi_add_host(host, &pdev->dev); | |
2097 | if (retval) { | |
2098 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x27, "scsi add host failed"); | |
4039c30e | 2099 | goto out_iounmap; |
1da177e4 LT |
2100 | } |
2101 | ||
2102 | pci_set_drvdata(pdev, host); | |
2103 | ||
3dabec71 | 2104 | printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%lx, IRQ: %d.\n", |
1da177e4 LT |
2105 | host->host_no, mem_addr, pdev->irq); |
2106 | printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n", | |
2107 | host->host_no, | |
2108 | (char *)twa_get_param(tw_dev, 0, TW_VERSION_TABLE, | |
2109 | TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH), | |
2110 | (char *)twa_get_param(tw_dev, 1, TW_VERSION_TABLE, | |
2111 | TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH), | |
75913d9b AR |
2112 | le32_to_cpu(*(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE, |
2113 | TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH))); | |
1da177e4 | 2114 | |
3dabec71 AR |
2115 | /* Try to enable MSI */ |
2116 | if (use_msi && (pdev->device != PCI_DEVICE_ID_3WARE_9000) && | |
2117 | !pci_enable_msi(pdev)) | |
2118 | set_bit(TW_USING_MSI, &tw_dev->flags); | |
2119 | ||
1da177e4 | 2120 | /* Now setup the interrupt handler */ |
1d6f359a | 2121 | retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev); |
1da177e4 LT |
2122 | if (retval) { |
2123 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x30, "Error requesting IRQ"); | |
2124 | goto out_remove_host; | |
2125 | } | |
2126 | ||
2127 | twa_device_extension_list[twa_device_extension_count] = tw_dev; | |
2128 | twa_device_extension_count++; | |
2129 | ||
2130 | /* Re-enable interrupts on the card */ | |
2131 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2132 | ||
2133 | /* Finally, scan the host */ | |
2134 | scsi_scan_host(host); | |
2135 | ||
2136 | if (twa_major == -1) { | |
2137 | if ((twa_major = register_chrdev (0, "twa", &twa_fops)) < 0) | |
2138 | TW_PRINTK(host, TW_DRIVER, 0x29, "Failed to register character device"); | |
2139 | } | |
2140 | return 0; | |
2141 | ||
2142 | out_remove_host: | |
3dabec71 AR |
2143 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) |
2144 | pci_disable_msi(pdev); | |
1da177e4 | 2145 | scsi_remove_host(host); |
4039c30e AR |
2146 | out_iounmap: |
2147 | iounmap(tw_dev->base_addr); | |
1da177e4 LT |
2148 | out_release_mem_region: |
2149 | pci_release_regions(pdev); | |
2150 | out_free_device_extension: | |
2151 | twa_free_device_extension(tw_dev); | |
2152 | scsi_host_put(host); | |
2153 | out_disable_device: | |
2154 | pci_disable_device(pdev); | |
2155 | ||
2156 | return retval; | |
2157 | } /* End twa_probe() */ | |
2158 | ||
2159 | /* This function is called to remove a device */ | |
2160 | static void twa_remove(struct pci_dev *pdev) | |
2161 | { | |
2162 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2163 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2164 | ||
2165 | scsi_remove_host(tw_dev->host); | |
2166 | ||
2167 | /* Unregister character device */ | |
2168 | if (twa_major >= 0) { | |
2169 | unregister_chrdev(twa_major, "twa"); | |
2170 | twa_major = -1; | |
2171 | } | |
2172 | ||
1da177e4 LT |
2173 | /* Shutdown the card */ |
2174 | __twa_shutdown(tw_dev); | |
2175 | ||
3dabec71 AR |
2176 | /* Disable MSI if enabled */ |
2177 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
2178 | pci_disable_msi(pdev); | |
2179 | ||
4039c30e AR |
2180 | /* Free IO remapping */ |
2181 | iounmap(tw_dev->base_addr); | |
2182 | ||
1da177e4 LT |
2183 | /* Free up the mem region */ |
2184 | pci_release_regions(pdev); | |
2185 | ||
2186 | /* Free up device extension resources */ | |
2187 | twa_free_device_extension(tw_dev); | |
2188 | ||
2189 | scsi_host_put(tw_dev->host); | |
2190 | pci_disable_device(pdev); | |
2191 | twa_device_extension_count--; | |
2192 | } /* End twa_remove() */ | |
2193 | ||
7a252fe7 AR |
2194 | #ifdef CONFIG_PM |
2195 | /* This function is called on PCI suspend */ | |
2196 | static int twa_suspend(struct pci_dev *pdev, pm_message_t state) | |
2197 | { | |
2198 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2199 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2200 | ||
2201 | printk(KERN_WARNING "3w-9xxx: Suspending host %d.\n", tw_dev->host->host_no); | |
2202 | ||
2203 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2204 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
2205 | ||
2206 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
2207 | pci_disable_msi(pdev); | |
2208 | ||
2209 | /* Tell the card we are shutting down */ | |
2210 | if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | |
2211 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x38, "Connection shutdown failed during suspend"); | |
2212 | } else { | |
2213 | printk(KERN_WARNING "3w-9xxx: Suspend complete.\n"); | |
2214 | } | |
2215 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
2216 | ||
2217 | pci_save_state(pdev); | |
2218 | pci_disable_device(pdev); | |
2219 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
2220 | ||
2221 | return 0; | |
2222 | } /* End twa_suspend() */ | |
2223 | ||
2224 | /* This function is called on PCI resume */ | |
2225 | static int twa_resume(struct pci_dev *pdev) | |
2226 | { | |
2227 | int retval = 0; | |
2228 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2229 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2230 | ||
2231 | printk(KERN_WARNING "3w-9xxx: Resuming host %d.\n", tw_dev->host->host_no); | |
2232 | pci_set_power_state(pdev, PCI_D0); | |
2233 | pci_enable_wake(pdev, PCI_D0, 0); | |
2234 | pci_restore_state(pdev); | |
2235 | ||
2236 | retval = pci_enable_device(pdev); | |
2237 | if (retval) { | |
2238 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x39, "Enable device failed during resume"); | |
2239 | return retval; | |
2240 | } | |
2241 | ||
2242 | pci_set_master(pdev); | |
2243 | pci_try_set_mwi(pdev); | |
2244 | ||
e930438c YH |
2245 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) |
2246 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) | |
2247 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) | |
2248 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { | |
7a252fe7 AR |
2249 | TW_PRINTK(host, TW_DRIVER, 0x40, "Failed to set dma mask during resume"); |
2250 | retval = -ENODEV; | |
2251 | goto out_disable_device; | |
2252 | } | |
2253 | ||
2254 | /* Initialize the card */ | |
2255 | if (twa_reset_sequence(tw_dev, 0)) { | |
2256 | retval = -ENODEV; | |
2257 | goto out_disable_device; | |
2258 | } | |
2259 | ||
2260 | /* Now setup the interrupt handler */ | |
2261 | retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev); | |
2262 | if (retval) { | |
2263 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x42, "Error requesting IRQ during resume"); | |
2264 | retval = -ENODEV; | |
2265 | goto out_disable_device; | |
2266 | } | |
2267 | ||
2268 | /* Now enable MSI if enabled */ | |
2269 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
2270 | pci_enable_msi(pdev); | |
2271 | ||
2272 | /* Re-enable interrupts on the card */ | |
2273 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2274 | ||
2275 | printk(KERN_WARNING "3w-9xxx: Resume complete.\n"); | |
2276 | return 0; | |
2277 | ||
2278 | out_disable_device: | |
2279 | scsi_remove_host(host); | |
2280 | pci_disable_device(pdev); | |
2281 | ||
2282 | return retval; | |
2283 | } /* End twa_resume() */ | |
2284 | #endif | |
2285 | ||
1da177e4 LT |
2286 | /* PCI Devices supported by this driver */ |
2287 | static struct pci_device_id twa_pci_tbl[] __devinitdata = { | |
2288 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000, | |
2289 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
49bfd8db AR |
2290 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9550SX, |
2291 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
4039c30e AR |
2292 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9650SE, |
2293 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
0e78d158 AR |
2294 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9690SA, |
2295 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1da177e4 LT |
2296 | { } |
2297 | }; | |
2298 | MODULE_DEVICE_TABLE(pci, twa_pci_tbl); | |
2299 | ||
2300 | /* pci_driver initializer */ | |
2301 | static struct pci_driver twa_driver = { | |
2302 | .name = "3w-9xxx", | |
2303 | .id_table = twa_pci_tbl, | |
2304 | .probe = twa_probe, | |
2305 | .remove = twa_remove, | |
7a252fe7 AR |
2306 | #ifdef CONFIG_PM |
2307 | .suspend = twa_suspend, | |
2308 | .resume = twa_resume, | |
2309 | #endif | |
d18c3db5 | 2310 | .shutdown = twa_shutdown |
1da177e4 LT |
2311 | }; |
2312 | ||
2313 | /* This function is called on driver initialization */ | |
2314 | static int __init twa_init(void) | |
2315 | { | |
2316 | printk(KERN_WARNING "3ware 9000 Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | |
2317 | ||
dcbccbde | 2318 | return pci_register_driver(&twa_driver); |
1da177e4 LT |
2319 | } /* End twa_init() */ |
2320 | ||
2321 | /* This function is called on driver exit */ | |
2322 | static void __exit twa_exit(void) | |
2323 | { | |
2324 | pci_unregister_driver(&twa_driver); | |
2325 | } /* End twa_exit() */ | |
2326 | ||
2327 | module_init(twa_init); | |
2328 | module_exit(twa_exit); | |
2329 |