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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 | |
75913d9b | 7 | Copyright (C) 2004-2006 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(). |
1da177e4 LT |
69 | */ |
70 | ||
71 | #include <linux/module.h> | |
72 | #include <linux/reboot.h> | |
73 | #include <linux/spinlock.h> | |
74 | #include <linux/interrupt.h> | |
75 | #include <linux/moduleparam.h> | |
76 | #include <linux/errno.h> | |
77 | #include <linux/types.h> | |
78 | #include <linux/delay.h> | |
79 | #include <linux/pci.h> | |
80 | #include <linux/time.h> | |
a12e25bd | 81 | #include <linux/mutex.h> |
1da177e4 LT |
82 | #include <asm/io.h> |
83 | #include <asm/irq.h> | |
84 | #include <asm/uaccess.h> | |
85 | #include <scsi/scsi.h> | |
86 | #include <scsi/scsi_host.h> | |
87 | #include <scsi/scsi_tcq.h> | |
88 | #include <scsi/scsi_cmnd.h> | |
89 | #include "3w-9xxx.h" | |
90 | ||
91 | /* Globals */ | |
1e08dcb3 | 92 | #define TW_DRIVER_VERSION "2.26.02.007" |
1da177e4 LT |
93 | static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT]; |
94 | static unsigned int twa_device_extension_count; | |
95 | static int twa_major = -1; | |
96 | extern struct timezone sys_tz; | |
97 | ||
98 | /* Module parameters */ | |
99 | MODULE_AUTHOR ("AMCC"); | |
100 | MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver"); | |
101 | MODULE_LICENSE("GPL"); | |
102 | MODULE_VERSION(TW_DRIVER_VERSION); | |
103 | ||
104 | /* Function prototypes */ | |
105 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header); | |
106 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id); | |
107 | static char *twa_aen_severity_lookup(unsigned char severity_code); | |
108 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id); | |
109 | static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); | |
110 | static int twa_chrdev_open(struct inode *inode, struct file *file); | |
111 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host); | |
112 | static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id); | |
113 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id); | |
114 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, | |
115 | u32 set_features, unsigned short current_fw_srl, | |
116 | unsigned short current_fw_arch_id, | |
117 | unsigned short current_fw_branch, | |
118 | unsigned short current_fw_build, | |
119 | unsigned short *fw_on_ctlr_srl, | |
120 | unsigned short *fw_on_ctlr_arch_id, | |
121 | unsigned short *fw_on_ctlr_branch, | |
122 | unsigned short *fw_on_ctlr_build, | |
123 | u32 *init_connect_result); | |
124 | static void twa_load_sgl(TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length); | |
125 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds); | |
126 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds); | |
127 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal); | |
128 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset); | |
129 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset); | |
130 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg); | |
131 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id); | |
132 | static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code); | |
133 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id); | |
134 | ||
135 | /* Functions */ | |
136 | ||
137 | /* Show some statistics about the card */ | |
138 | static ssize_t twa_show_stats(struct class_device *class_dev, char *buf) | |
139 | { | |
140 | struct Scsi_Host *host = class_to_shost(class_dev); | |
141 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
142 | unsigned long flags = 0; | |
143 | ssize_t len; | |
144 | ||
145 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
146 | len = snprintf(buf, PAGE_SIZE, "3w-9xxx Driver version: %s\n" | |
147 | "Current commands posted: %4d\n" | |
148 | "Max commands posted: %4d\n" | |
149 | "Current pending commands: %4d\n" | |
150 | "Max pending commands: %4d\n" | |
151 | "Last sgl length: %4d\n" | |
152 | "Max sgl length: %4d\n" | |
153 | "Last sector count: %4d\n" | |
154 | "Max sector count: %4d\n" | |
155 | "SCSI Host Resets: %4d\n" | |
156 | "AEN's: %4d\n", | |
157 | TW_DRIVER_VERSION, | |
158 | tw_dev->posted_request_count, | |
159 | tw_dev->max_posted_request_count, | |
160 | tw_dev->pending_request_count, | |
161 | tw_dev->max_pending_request_count, | |
162 | tw_dev->sgl_entries, | |
163 | tw_dev->max_sgl_entries, | |
164 | tw_dev->sector_count, | |
165 | tw_dev->max_sector_count, | |
166 | tw_dev->num_resets, | |
167 | tw_dev->aen_count); | |
168 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
169 | return len; | |
170 | } /* End twa_show_stats() */ | |
171 | ||
172 | /* This function will set a devices queue depth */ | |
173 | static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth) | |
174 | { | |
175 | if (queue_depth > TW_Q_LENGTH-2) | |
176 | queue_depth = TW_Q_LENGTH-2; | |
177 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); | |
178 | return queue_depth; | |
179 | } /* End twa_change_queue_depth() */ | |
180 | ||
181 | /* Create sysfs 'stats' entry */ | |
182 | static struct class_device_attribute twa_host_stats_attr = { | |
183 | .attr = { | |
184 | .name = "stats", | |
185 | .mode = S_IRUGO, | |
186 | }, | |
187 | .show = twa_show_stats | |
188 | }; | |
189 | ||
190 | /* Host attributes initializer */ | |
191 | static struct class_device_attribute *twa_host_attrs[] = { | |
192 | &twa_host_stats_attr, | |
193 | NULL, | |
194 | }; | |
195 | ||
196 | /* File operations struct for character device */ | |
197 | static struct file_operations twa_fops = { | |
198 | .owner = THIS_MODULE, | |
199 | .ioctl = twa_chrdev_ioctl, | |
200 | .open = twa_chrdev_open, | |
201 | .release = NULL | |
202 | }; | |
203 | ||
204 | /* This function will complete an aen request from the isr */ | |
205 | static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id) | |
206 | { | |
207 | TW_Command_Full *full_command_packet; | |
208 | TW_Command *command_packet; | |
209 | TW_Command_Apache_Header *header; | |
210 | unsigned short aen; | |
211 | int retval = 1; | |
212 | ||
213 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
214 | tw_dev->posted_request_count--; | |
75913d9b | 215 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
216 | full_command_packet = tw_dev->command_packet_virt[request_id]; |
217 | command_packet = &full_command_packet->command.oldcommand; | |
218 | ||
219 | /* First check for internal completion of set param for time sync */ | |
220 | if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) { | |
221 | /* Keep reading the queue in case there are more aen's */ | |
222 | if (twa_aen_read_queue(tw_dev, request_id)) | |
223 | goto out2; | |
224 | else { | |
225 | retval = 0; | |
226 | goto out; | |
227 | } | |
228 | } | |
229 | ||
230 | switch (aen) { | |
231 | case TW_AEN_QUEUE_EMPTY: | |
232 | /* Quit reading the queue if this is the last one */ | |
233 | break; | |
234 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
235 | twa_aen_sync_time(tw_dev, request_id); | |
236 | retval = 0; | |
237 | goto out; | |
238 | default: | |
239 | twa_aen_queue_event(tw_dev, header); | |
240 | ||
241 | /* If there are more aen's, keep reading the queue */ | |
242 | if (twa_aen_read_queue(tw_dev, request_id)) | |
243 | goto out2; | |
244 | else { | |
245 | retval = 0; | |
246 | goto out; | |
247 | } | |
248 | } | |
249 | retval = 0; | |
250 | out2: | |
251 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
252 | twa_free_request_id(tw_dev, request_id); | |
253 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
254 | out: | |
255 | return retval; | |
256 | } /* End twa_aen_complete() */ | |
257 | ||
258 | /* This function will drain aen queue */ | |
259 | static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) | |
260 | { | |
261 | int request_id = 0; | |
262 | char cdb[TW_MAX_CDB_LEN]; | |
263 | TW_SG_Entry sglist[1]; | |
264 | int finished = 0, count = 0; | |
265 | TW_Command_Full *full_command_packet; | |
266 | TW_Command_Apache_Header *header; | |
267 | unsigned short aen; | |
268 | int first_reset = 0, queue = 0, retval = 1; | |
269 | ||
270 | if (no_check_reset) | |
271 | first_reset = 0; | |
272 | else | |
273 | first_reset = 1; | |
274 | ||
275 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
276 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
277 | ||
278 | /* Initialize cdb */ | |
279 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
280 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
281 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
282 | ||
283 | /* Initialize sglist */ | |
284 | memset(&sglist, 0, sizeof(TW_SG_Entry)); | |
285 | sglist[0].length = TW_SECTOR_SIZE; | |
286 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
287 | ||
288 | if (sglist[0].address & TW_ALIGNMENT_9000_SGL) { | |
289 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Found unaligned address during AEN drain"); | |
290 | goto out; | |
291 | } | |
292 | ||
293 | /* Mark internal command */ | |
294 | tw_dev->srb[request_id] = NULL; | |
295 | ||
296 | do { | |
297 | /* Send command to the board */ | |
298 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
299 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Error posting request sense"); | |
300 | goto out; | |
301 | } | |
302 | ||
303 | /* Now poll for completion */ | |
304 | if (twa_poll_response(tw_dev, request_id, 30)) { | |
305 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "No valid response while draining AEN queue"); | |
306 | tw_dev->posted_request_count--; | |
307 | goto out; | |
308 | } | |
309 | ||
310 | tw_dev->posted_request_count--; | |
311 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
75913d9b | 312 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
313 | queue = 0; |
314 | count++; | |
315 | ||
316 | switch (aen) { | |
317 | case TW_AEN_QUEUE_EMPTY: | |
318 | if (first_reset != 1) | |
319 | goto out; | |
320 | else | |
321 | finished = 1; | |
322 | break; | |
323 | case TW_AEN_SOFT_RESET: | |
324 | if (first_reset == 0) | |
325 | first_reset = 1; | |
326 | else | |
327 | queue = 1; | |
328 | break; | |
329 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
330 | break; | |
331 | default: | |
332 | queue = 1; | |
333 | } | |
334 | ||
335 | /* Now queue an event info */ | |
336 | if (queue) | |
337 | twa_aen_queue_event(tw_dev, header); | |
338 | } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN)); | |
339 | ||
340 | if (count == TW_MAX_AEN_DRAIN) | |
341 | goto out; | |
342 | ||
343 | retval = 0; | |
344 | out: | |
345 | tw_dev->state[request_id] = TW_S_INITIAL; | |
346 | return retval; | |
347 | } /* End twa_aen_drain_queue() */ | |
348 | ||
349 | /* This function will queue an event */ | |
350 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header) | |
351 | { | |
352 | u32 local_time; | |
353 | struct timeval time; | |
354 | TW_Event *event; | |
355 | unsigned short aen; | |
356 | char host[16]; | |
357 | char *error_str; | |
358 | ||
359 | tw_dev->aen_count++; | |
360 | ||
361 | /* Fill out event info */ | |
362 | event = tw_dev->event_queue[tw_dev->error_index]; | |
363 | ||
364 | /* Check for clobber */ | |
365 | host[0] = '\0'; | |
366 | if (tw_dev->host) { | |
367 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | |
368 | if (event->retrieved == TW_AEN_NOT_RETRIEVED) | |
369 | tw_dev->aen_clobber = 1; | |
370 | } | |
371 | ||
75913d9b | 372 | aen = le16_to_cpu(header->status_block.error); |
1da177e4 LT |
373 | memset(event, 0, sizeof(TW_Event)); |
374 | ||
375 | event->severity = TW_SEV_OUT(header->status_block.severity__reserved); | |
376 | do_gettimeofday(&time); | |
377 | local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60)); | |
378 | event->time_stamp_sec = local_time; | |
379 | event->aen_code = aen; | |
380 | event->retrieved = TW_AEN_NOT_RETRIEVED; | |
381 | event->sequence_id = tw_dev->error_sequence_id; | |
382 | tw_dev->error_sequence_id++; | |
383 | ||
384 | /* Check for embedded error string */ | |
385 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]); | |
386 | ||
387 | header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0'; | |
388 | event->parameter_len = strlen(header->err_specific_desc); | |
75913d9b | 389 | memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + (error_str[0] == '\0' ? 0 : (1 + strlen(error_str)))); |
1da177e4 LT |
390 | if (event->severity != TW_AEN_SEVERITY_DEBUG) |
391 | printk(KERN_WARNING "3w-9xxx:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n", | |
392 | host, | |
393 | twa_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)), | |
394 | TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, | |
395 | error_str[0] == '\0' ? twa_string_lookup(twa_aen_table, aen) : error_str, | |
396 | header->err_specific_desc); | |
397 | else | |
398 | tw_dev->aen_count--; | |
399 | ||
400 | if ((tw_dev->error_index + 1) == TW_Q_LENGTH) | |
401 | tw_dev->event_queue_wrapped = 1; | |
402 | tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH; | |
403 | } /* End twa_aen_queue_event() */ | |
404 | ||
405 | /* This function will read the aen queue from the isr */ | |
406 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | |
407 | { | |
408 | char cdb[TW_MAX_CDB_LEN]; | |
409 | TW_SG_Entry sglist[1]; | |
410 | TW_Command_Full *full_command_packet; | |
411 | int retval = 1; | |
412 | ||
413 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
414 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
415 | ||
416 | /* Initialize cdb */ | |
417 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
418 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
419 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
420 | ||
421 | /* Initialize sglist */ | |
422 | memset(&sglist, 0, sizeof(TW_SG_Entry)); | |
423 | sglist[0].length = TW_SECTOR_SIZE; | |
424 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
425 | ||
426 | /* Mark internal command */ | |
427 | tw_dev->srb[request_id] = NULL; | |
428 | ||
429 | /* Now post the command packet */ | |
430 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
431 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "Post failed while reading AEN queue"); | |
432 | goto out; | |
433 | } | |
434 | retval = 0; | |
435 | out: | |
436 | return retval; | |
437 | } /* End twa_aen_read_queue() */ | |
438 | ||
439 | /* This function will look up an AEN severity string */ | |
440 | static char *twa_aen_severity_lookup(unsigned char severity_code) | |
441 | { | |
442 | char *retval = NULL; | |
443 | ||
444 | if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) || | |
445 | (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG)) | |
446 | goto out; | |
447 | ||
448 | retval = twa_aen_severity_table[severity_code]; | |
449 | out: | |
450 | return retval; | |
451 | } /* End twa_aen_severity_lookup() */ | |
452 | ||
453 | /* This function will sync firmware time with the host time */ | |
454 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) | |
455 | { | |
456 | u32 schedulertime; | |
457 | struct timeval utc; | |
458 | TW_Command_Full *full_command_packet; | |
459 | TW_Command *command_packet; | |
460 | TW_Param_Apache *param; | |
461 | u32 local_time; | |
462 | ||
463 | /* Fill out the command packet */ | |
464 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
465 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
466 | command_packet = &full_command_packet->command.oldcommand; | |
467 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | |
468 | command_packet->request_id = request_id; | |
75913d9b AR |
469 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
470 | command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); | |
1da177e4 | 471 | command_packet->size = TW_COMMAND_SIZE; |
75913d9b | 472 | command_packet->byte6_offset.parameter_count = cpu_to_le16(1); |
1da177e4 LT |
473 | |
474 | /* Setup the param */ | |
475 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
476 | memset(param, 0, TW_SECTOR_SIZE); | |
75913d9b AR |
477 | param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */ |
478 | param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */ | |
479 | param->parameter_size_bytes = cpu_to_le16(4); | |
1da177e4 LT |
480 | |
481 | /* Convert system time in UTC to local time seconds since last | |
482 | Sunday 12:00AM */ | |
483 | do_gettimeofday(&utc); | |
484 | local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60)); | |
485 | schedulertime = local_time - (3 * 86400); | |
75913d9b | 486 | schedulertime = cpu_to_le32(schedulertime % 604800); |
1da177e4 LT |
487 | |
488 | memcpy(param->data, &schedulertime, sizeof(u32)); | |
489 | ||
490 | /* Mark internal command */ | |
491 | tw_dev->srb[request_id] = NULL; | |
492 | ||
493 | /* Now post the command */ | |
494 | twa_post_command_packet(tw_dev, request_id, 1); | |
495 | } /* End twa_aen_sync_time() */ | |
496 | ||
497 | /* This function will allocate memory and check if it is correctly aligned */ | |
498 | static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | |
499 | { | |
500 | int i; | |
501 | dma_addr_t dma_handle; | |
502 | unsigned long *cpu_addr; | |
503 | int retval = 1; | |
504 | ||
505 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); | |
506 | if (!cpu_addr) { | |
507 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed"); | |
508 | goto out; | |
509 | } | |
510 | ||
511 | if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) { | |
512 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory"); | |
513 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); | |
514 | goto out; | |
515 | } | |
516 | ||
517 | memset(cpu_addr, 0, size*TW_Q_LENGTH); | |
518 | ||
519 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
520 | switch(which) { | |
521 | case 0: | |
522 | tw_dev->command_packet_phys[i] = dma_handle+(i*size); | |
523 | tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size)); | |
524 | break; | |
525 | case 1: | |
526 | tw_dev->generic_buffer_phys[i] = dma_handle+(i*size); | |
527 | tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
528 | break; | |
529 | } | |
530 | } | |
531 | retval = 0; | |
532 | out: | |
533 | return retval; | |
534 | } /* End twa_allocate_memory() */ | |
535 | ||
536 | /* This function will check the status register for unexpected bits */ | |
537 | static int twa_check_bits(u32 status_reg_value) | |
538 | { | |
539 | int retval = 1; | |
540 | ||
541 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) | |
542 | goto out; | |
543 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) | |
544 | goto out; | |
545 | ||
546 | retval = 0; | |
547 | out: | |
548 | return retval; | |
549 | } /* End twa_check_bits() */ | |
550 | ||
551 | /* This function will check the srl and decide if we are compatible */ | |
552 | static int twa_check_srl(TW_Device_Extension *tw_dev, int *flashed) | |
553 | { | |
554 | int retval = 1; | |
555 | unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0; | |
556 | unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0; | |
557 | u32 init_connect_result = 0; | |
558 | ||
559 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
560 | TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL, | |
561 | TW_9000_ARCH_ID, TW_CURRENT_DRIVER_BRANCH, | |
562 | TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl, | |
563 | &fw_on_ctlr_arch_id, &fw_on_ctlr_branch, | |
564 | &fw_on_ctlr_build, &init_connect_result)) { | |
565 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "Initconnection failed while checking SRL"); | |
566 | goto out; | |
567 | } | |
568 | ||
569 | tw_dev->working_srl = fw_on_ctlr_srl; | |
570 | tw_dev->working_branch = fw_on_ctlr_branch; | |
571 | tw_dev->working_build = fw_on_ctlr_build; | |
572 | ||
573 | /* Try base mode compatibility */ | |
574 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { | |
575 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
576 | TW_EXTENDED_INIT_CONNECT, | |
577 | TW_BASE_FW_SRL, TW_9000_ARCH_ID, | |
578 | TW_BASE_FW_BRANCH, TW_BASE_FW_BUILD, | |
579 | &fw_on_ctlr_srl, &fw_on_ctlr_arch_id, | |
580 | &fw_on_ctlr_branch, &fw_on_ctlr_build, | |
581 | &init_connect_result)) { | |
582 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Initconnection (base mode) failed while checking SRL"); | |
583 | goto out; | |
584 | } | |
585 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { | |
586 | if (TW_CURRENT_DRIVER_SRL > fw_on_ctlr_srl) { | |
587 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x32, "Firmware and driver incompatibility: please upgrade firmware"); | |
588 | } else { | |
589 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x33, "Firmware and driver incompatibility: please upgrade driver"); | |
590 | } | |
591 | goto out; | |
592 | } | |
593 | tw_dev->working_srl = TW_BASE_FW_SRL; | |
594 | tw_dev->working_branch = TW_BASE_FW_BRANCH; | |
595 | tw_dev->working_build = TW_BASE_FW_BUILD; | |
596 | } | |
597 | retval = 0; | |
598 | out: | |
599 | return retval; | |
600 | } /* End twa_check_srl() */ | |
601 | ||
602 | /* This function handles ioctl for the character device */ | |
603 | static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
604 | { | |
605 | long timeout; | |
606 | unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; | |
607 | dma_addr_t dma_handle; | |
608 | int request_id = 0; | |
609 | unsigned int sequence_id = 0; | |
610 | unsigned char event_index, start_index; | |
611 | TW_Ioctl_Driver_Command driver_command; | |
612 | TW_Ioctl_Buf_Apache *tw_ioctl; | |
613 | TW_Lock *tw_lock; | |
614 | TW_Command_Full *full_command_packet; | |
615 | TW_Compatibility_Info *tw_compat_info; | |
616 | TW_Event *event; | |
617 | struct timeval current_time; | |
618 | u32 current_time_ms; | |
619 | TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)]; | |
620 | int retval = TW_IOCTL_ERROR_OS_EFAULT; | |
621 | void __user *argp = (void __user *)arg; | |
622 | ||
623 | /* Only let one of these through at a time */ | |
a12e25bd | 624 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { |
1da177e4 LT |
625 | retval = TW_IOCTL_ERROR_OS_EINTR; |
626 | goto out; | |
627 | } | |
628 | ||
629 | /* First copy down the driver command */ | |
630 | if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command))) | |
631 | goto out2; | |
632 | ||
633 | /* Check data buffer size */ | |
634 | if (driver_command.buffer_length > TW_MAX_SECTORS * 512) { | |
635 | retval = TW_IOCTL_ERROR_OS_EINVAL; | |
636 | goto out2; | |
637 | } | |
638 | ||
639 | /* Hardware can only do multiple of 512 byte transfers */ | |
640 | data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511; | |
641 | ||
642 | /* Now allocate ioctl buf memory */ | |
643 | 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); | |
644 | if (!cpu_addr) { | |
645 | retval = TW_IOCTL_ERROR_OS_ENOMEM; | |
646 | goto out2; | |
647 | } | |
648 | ||
649 | tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr; | |
650 | ||
651 | /* Now copy down the entire ioctl */ | |
652 | if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1)) | |
653 | goto out3; | |
654 | ||
655 | /* See which ioctl we are doing */ | |
656 | switch (cmd) { | |
657 | case TW_IOCTL_FIRMWARE_PASS_THROUGH: | |
658 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
659 | twa_get_request_id(tw_dev, &request_id); | |
660 | ||
661 | /* Flag internal command */ | |
662 | tw_dev->srb[request_id] = NULL; | |
663 | ||
664 | /* Flag chrdev ioctl */ | |
665 | tw_dev->chrdev_request_id = request_id; | |
666 | ||
667 | full_command_packet = &tw_ioctl->firmware_command; | |
668 | ||
669 | /* Load request id and sglist for both command types */ | |
670 | twa_load_sgl(full_command_packet, request_id, dma_handle, data_buffer_length_adjusted); | |
671 | ||
672 | memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full)); | |
673 | ||
674 | /* Now post the command packet to the controller */ | |
675 | twa_post_command_packet(tw_dev, request_id, 1); | |
676 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
677 | ||
678 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | |
679 | ||
680 | /* Now wait for command to complete */ | |
681 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | |
682 | ||
683 | /* See if we reset while waiting for the ioctl to complete */ | |
684 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) { | |
685 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
686 | retval = TW_IOCTL_ERROR_OS_ERESTARTSYS; | |
687 | goto out3; | |
688 | } | |
689 | ||
690 | /* We timed out, and didn't get an interrupt */ | |
691 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | |
692 | /* Now we need to reset the board */ | |
693 | printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n", | |
694 | tw_dev->host->host_no, TW_DRIVER, 0xc, | |
695 | cmd); | |
696 | retval = TW_IOCTL_ERROR_OS_EIO; | |
697 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
698 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
699 | twa_free_request_id(tw_dev, request_id); | |
700 | tw_dev->posted_request_count--; | |
701 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
702 | twa_reset_device_extension(tw_dev, 1); | |
703 | goto out3; | |
704 | } | |
705 | ||
706 | /* Now copy in the command packet response */ | |
707 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full)); | |
708 | ||
709 | /* Now complete the io */ | |
710 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
711 | tw_dev->posted_request_count--; | |
712 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
713 | twa_free_request_id(tw_dev, request_id); | |
714 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
715 | break; | |
716 | case TW_IOCTL_GET_COMPATIBILITY_INFO: | |
717 | tw_ioctl->driver_command.status = 0; | |
718 | /* Copy compatiblity struct into ioctl data buffer */ | |
719 | tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer; | |
720 | strncpy(tw_compat_info->driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION)); | |
721 | tw_compat_info->working_srl = tw_dev->working_srl; | |
722 | tw_compat_info->working_branch = tw_dev->working_branch; | |
723 | tw_compat_info->working_build = tw_dev->working_build; | |
724 | tw_compat_info->driver_srl_high = TW_CURRENT_DRIVER_SRL; | |
725 | tw_compat_info->driver_branch_high = TW_CURRENT_DRIVER_BRANCH; | |
726 | tw_compat_info->driver_build_high = TW_CURRENT_DRIVER_BUILD; | |
727 | tw_compat_info->driver_srl_low = TW_BASE_FW_SRL; | |
728 | tw_compat_info->driver_branch_low = TW_BASE_FW_BRANCH; | |
729 | tw_compat_info->driver_build_low = TW_BASE_FW_BUILD; | |
730 | break; | |
731 | case TW_IOCTL_GET_LAST_EVENT: | |
732 | if (tw_dev->event_queue_wrapped) { | |
733 | if (tw_dev->aen_clobber) { | |
734 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
735 | tw_dev->aen_clobber = 0; | |
736 | } else | |
737 | tw_ioctl->driver_command.status = 0; | |
738 | } else { | |
739 | if (!tw_dev->error_index) { | |
740 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
741 | break; | |
742 | } | |
743 | tw_ioctl->driver_command.status = 0; | |
744 | } | |
745 | event_index = (tw_dev->error_index - 1 + TW_Q_LENGTH) % TW_Q_LENGTH; | |
746 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
747 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
748 | break; | |
749 | case TW_IOCTL_GET_FIRST_EVENT: | |
750 | if (tw_dev->event_queue_wrapped) { | |
751 | if (tw_dev->aen_clobber) { | |
752 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
753 | tw_dev->aen_clobber = 0; | |
754 | } else | |
755 | tw_ioctl->driver_command.status = 0; | |
756 | event_index = tw_dev->error_index; | |
757 | } else { | |
758 | if (!tw_dev->error_index) { | |
759 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
760 | break; | |
761 | } | |
762 | tw_ioctl->driver_command.status = 0; | |
763 | event_index = 0; | |
764 | } | |
765 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
766 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
767 | break; | |
768 | case TW_IOCTL_GET_NEXT_EVENT: | |
769 | event = (TW_Event *)tw_ioctl->data_buffer; | |
770 | sequence_id = event->sequence_id; | |
771 | tw_ioctl->driver_command.status = 0; | |
772 | ||
773 | if (tw_dev->event_queue_wrapped) { | |
774 | if (tw_dev->aen_clobber) { | |
775 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
776 | tw_dev->aen_clobber = 0; | |
777 | } | |
778 | start_index = tw_dev->error_index; | |
779 | } else { | |
780 | if (!tw_dev->error_index) { | |
781 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
782 | break; | |
783 | } | |
784 | start_index = 0; | |
785 | } | |
786 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id + 1) % TW_Q_LENGTH; | |
787 | ||
788 | if (!(tw_dev->event_queue[event_index]->sequence_id > sequence_id)) { | |
789 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) | |
790 | tw_dev->aen_clobber = 1; | |
791 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
792 | break; | |
793 | } | |
794 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
795 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
796 | break; | |
797 | case TW_IOCTL_GET_PREVIOUS_EVENT: | |
798 | event = (TW_Event *)tw_ioctl->data_buffer; | |
799 | sequence_id = event->sequence_id; | |
800 | tw_ioctl->driver_command.status = 0; | |
801 | ||
802 | if (tw_dev->event_queue_wrapped) { | |
803 | if (tw_dev->aen_clobber) { | |
804 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
805 | tw_dev->aen_clobber = 0; | |
806 | } | |
807 | start_index = tw_dev->error_index; | |
808 | } else { | |
809 | if (!tw_dev->error_index) { | |
810 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
811 | break; | |
812 | } | |
813 | start_index = 0; | |
814 | } | |
815 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id - 1) % TW_Q_LENGTH; | |
816 | ||
817 | if (!(tw_dev->event_queue[event_index]->sequence_id < sequence_id)) { | |
818 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) | |
819 | tw_dev->aen_clobber = 1; | |
820 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
821 | break; | |
822 | } | |
823 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
824 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
825 | break; | |
826 | case TW_IOCTL_GET_LOCK: | |
827 | tw_lock = (TW_Lock *)tw_ioctl->data_buffer; | |
828 | do_gettimeofday(¤t_time); | |
829 | current_time_ms = (current_time.tv_sec * 1000) + (current_time.tv_usec / 1000); | |
830 | ||
831 | if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) || (current_time_ms >= tw_dev->ioctl_msec)) { | |
832 | tw_dev->ioctl_sem_lock = 1; | |
833 | tw_dev->ioctl_msec = current_time_ms + tw_lock->timeout_msec; | |
834 | tw_ioctl->driver_command.status = 0; | |
835 | tw_lock->time_remaining_msec = tw_lock->timeout_msec; | |
836 | } else { | |
837 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED; | |
838 | tw_lock->time_remaining_msec = tw_dev->ioctl_msec - current_time_ms; | |
839 | } | |
840 | break; | |
841 | case TW_IOCTL_RELEASE_LOCK: | |
842 | if (tw_dev->ioctl_sem_lock == 1) { | |
843 | tw_dev->ioctl_sem_lock = 0; | |
844 | tw_ioctl->driver_command.status = 0; | |
845 | } else { | |
846 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED; | |
847 | } | |
848 | break; | |
849 | default: | |
850 | retval = TW_IOCTL_ERROR_OS_ENOTTY; | |
851 | goto out3; | |
852 | } | |
853 | ||
854 | /* Now copy the entire response to userspace */ | |
855 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0) | |
856 | retval = 0; | |
857 | out3: | |
858 | /* Now free ioctl buf memory */ | |
859 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle); | |
860 | out2: | |
a12e25bd | 861 | mutex_unlock(&tw_dev->ioctl_lock); |
1da177e4 LT |
862 | out: |
863 | return retval; | |
864 | } /* End twa_chrdev_ioctl() */ | |
865 | ||
866 | /* This function handles open for the character device */ | |
867 | static int twa_chrdev_open(struct inode *inode, struct file *file) | |
868 | { | |
869 | unsigned int minor_number; | |
870 | int retval = TW_IOCTL_ERROR_OS_ENODEV; | |
871 | ||
872 | minor_number = iminor(inode); | |
873 | if (minor_number >= twa_device_extension_count) | |
874 | goto out; | |
875 | retval = 0; | |
876 | out: | |
877 | return retval; | |
878 | } /* End twa_chrdev_open() */ | |
879 | ||
880 | /* This function will print readable messages from status register errors */ | |
881 | static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value) | |
882 | { | |
883 | int retval = 1; | |
884 | ||
885 | /* Check for various error conditions and handle them appropriately */ | |
886 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { | |
887 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "PCI Parity Error: clearing"); | |
888 | writel(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
889 | } | |
890 | ||
891 | if (status_reg_value & TW_STATUS_PCI_ABORT) { | |
892 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "PCI Abort: clearing"); | |
893 | writel(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); | |
894 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); | |
895 | } | |
896 | ||
897 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { | |
898 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Controller Queue Error: clearing"); | |
899 | writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
900 | } | |
901 | ||
1da177e4 LT |
902 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { |
903 | if (tw_dev->reset_print == 0) { | |
904 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing"); | |
905 | tw_dev->reset_print = 1; | |
906 | } | |
907 | goto out; | |
908 | } | |
909 | retval = 0; | |
910 | out: | |
911 | return retval; | |
912 | } /* End twa_decode_bits() */ | |
913 | ||
914 | /* This function will empty the response queue */ | |
915 | static int twa_empty_response_queue(TW_Device_Extension *tw_dev) | |
916 | { | |
917 | u32 status_reg_value, response_que_value; | |
918 | int count = 0, retval = 1; | |
919 | ||
920 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
921 | ||
922 | while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) { | |
923 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
924 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
925 | count++; | |
926 | } | |
927 | if (count == TW_MAX_RESPONSE_DRAIN) | |
928 | goto out; | |
929 | ||
930 | retval = 0; | |
931 | out: | |
932 | return retval; | |
933 | } /* End twa_empty_response_queue() */ | |
934 | ||
49bfd8db AR |
935 | /* This function will clear the pchip/response queue on 9550SX */ |
936 | static int twa_empty_response_queue_large(TW_Device_Extension *tw_dev) | |
937 | { | |
75913d9b AR |
938 | u32 response_que_value = 0; |
939 | unsigned long before; | |
940 | int retval = 1; | |
49bfd8db AR |
941 | |
942 | if (tw_dev->tw_pci_dev->device == PCI_DEVICE_ID_3WARE_9550SX) { | |
75913d9b AR |
943 | before = jiffies; |
944 | while ((response_que_value & TW_9550SX_DRAIN_COMPLETED) != TW_9550SX_DRAIN_COMPLETED) { | |
49bfd8db | 945 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR_LARGE(tw_dev)); |
75913d9b | 946 | if (time_after(jiffies, before + HZ * 30)) |
49bfd8db | 947 | goto out; |
49bfd8db | 948 | } |
75913d9b AR |
949 | /* P-chip settle time */ |
950 | msleep(500); | |
49bfd8db AR |
951 | retval = 0; |
952 | } else | |
953 | retval = 0; | |
954 | out: | |
955 | return retval; | |
956 | } /* End twa_empty_response_queue_large() */ | |
957 | ||
1da177e4 LT |
958 | /* This function passes sense keys from firmware to scsi layer */ |
959 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host) | |
960 | { | |
961 | TW_Command_Full *full_command_packet; | |
962 | unsigned short error; | |
963 | int retval = 1; | |
964 | char *error_str; | |
965 | ||
966 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
967 | ||
968 | /* Check for embedded error string */ | |
969 | error_str = &(full_command_packet->header.err_specific_desc[strlen(full_command_packet->header.err_specific_desc) + 1]); | |
970 | ||
971 | /* Don't print error for Logical unit not supported during rollcall */ | |
75913d9b | 972 | error = le16_to_cpu(full_command_packet->header.status_block.error); |
1da177e4 LT |
973 | if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE)) { |
974 | if (print_host) | |
975 | printk(KERN_WARNING "3w-9xxx: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
976 | tw_dev->host->host_no, | |
977 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
978 | full_command_packet->header.status_block.error, | |
979 | error_str[0] == '\0' ? | |
980 | twa_string_lookup(twa_error_table, | |
981 | full_command_packet->header.status_block.error) : error_str, | |
982 | full_command_packet->header.err_specific_desc); | |
983 | else | |
984 | printk(KERN_WARNING "3w-9xxx: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
985 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
986 | full_command_packet->header.status_block.error, | |
987 | error_str[0] == '\0' ? | |
988 | twa_string_lookup(twa_error_table, | |
989 | full_command_packet->header.status_block.error) : error_str, | |
990 | full_command_packet->header.err_specific_desc); | |
991 | } | |
992 | ||
993 | if (copy_sense) { | |
994 | memcpy(tw_dev->srb[request_id]->sense_buffer, full_command_packet->header.sense_data, TW_SENSE_DATA_LENGTH); | |
995 | tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1); | |
996 | retval = TW_ISR_DONT_RESULT; | |
997 | goto out; | |
998 | } | |
999 | retval = 0; | |
1000 | out: | |
1001 | return retval; | |
1002 | } /* End twa_fill_sense() */ | |
1003 | ||
1004 | /* This function will free up device extension resources */ | |
1005 | static void twa_free_device_extension(TW_Device_Extension *tw_dev) | |
1006 | { | |
1007 | if (tw_dev->command_packet_virt[0]) | |
1008 | pci_free_consistent(tw_dev->tw_pci_dev, | |
1009 | sizeof(TW_Command_Full)*TW_Q_LENGTH, | |
1010 | tw_dev->command_packet_virt[0], | |
1011 | tw_dev->command_packet_phys[0]); | |
1012 | ||
1013 | if (tw_dev->generic_buffer_virt[0]) | |
1014 | pci_free_consistent(tw_dev->tw_pci_dev, | |
1015 | TW_SECTOR_SIZE*TW_Q_LENGTH, | |
1016 | tw_dev->generic_buffer_virt[0], | |
1017 | tw_dev->generic_buffer_phys[0]); | |
1018 | ||
c9475cb0 | 1019 | kfree(tw_dev->event_queue[0]); |
1da177e4 LT |
1020 | } /* End twa_free_device_extension() */ |
1021 | ||
1022 | /* This function will free a request id */ | |
1023 | static void twa_free_request_id(TW_Device_Extension *tw_dev, int request_id) | |
1024 | { | |
1025 | tw_dev->free_queue[tw_dev->free_tail] = request_id; | |
1026 | tw_dev->state[request_id] = TW_S_FINISHED; | |
1027 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; | |
1028 | } /* End twa_free_request_id() */ | |
1029 | ||
7f927fcc | 1030 | /* This function will get parameter table entries from the firmware */ |
1da177e4 LT |
1031 | static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes) |
1032 | { | |
1033 | TW_Command_Full *full_command_packet; | |
1034 | TW_Command *command_packet; | |
1035 | TW_Param_Apache *param; | |
1036 | unsigned long param_value; | |
1037 | void *retval = NULL; | |
1038 | ||
1039 | /* Setup the command packet */ | |
1040 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1041 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
1042 | command_packet = &full_command_packet->command.oldcommand; | |
1043 | ||
1044 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1045 | command_packet->size = TW_COMMAND_SIZE; | |
1046 | command_packet->request_id = request_id; | |
75913d9b | 1047 | command_packet->byte6_offset.block_count = cpu_to_le16(1); |
1da177e4 LT |
1048 | |
1049 | /* Now setup the param */ | |
1050 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
1051 | memset(param, 0, TW_SECTOR_SIZE); | |
75913d9b AR |
1052 | param->table_id = cpu_to_le16(table_id | 0x8000); |
1053 | param->parameter_id = cpu_to_le16(parameter_id); | |
1054 | param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes); | |
1da177e4 LT |
1055 | param_value = tw_dev->generic_buffer_phys[request_id]; |
1056 | ||
75913d9b AR |
1057 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(param_value); |
1058 | command_packet->byte8_offset.param.sgl[0].length = cpu_to_le32(TW_SECTOR_SIZE); | |
1da177e4 LT |
1059 | |
1060 | /* Post the command packet to the board */ | |
1061 | twa_post_command_packet(tw_dev, request_id, 1); | |
1062 | ||
1063 | /* Poll for completion */ | |
1064 | if (twa_poll_response(tw_dev, request_id, 30)) | |
1065 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "No valid response during get param") | |
1066 | else | |
1067 | retval = (void *)&(param->data[0]); | |
1068 | ||
1069 | tw_dev->posted_request_count--; | |
1070 | tw_dev->state[request_id] = TW_S_INITIAL; | |
1071 | ||
1072 | return retval; | |
1073 | } /* End twa_get_param() */ | |
1074 | ||
1075 | /* This function will assign an available request id */ | |
1076 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id) | |
1077 | { | |
1078 | *request_id = tw_dev->free_queue[tw_dev->free_head]; | |
1079 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; | |
1080 | tw_dev->state[*request_id] = TW_S_STARTED; | |
1081 | } /* End twa_get_request_id() */ | |
1082 | ||
1083 | /* This function will send an initconnection command to controller */ | |
1084 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, | |
1085 | u32 set_features, unsigned short current_fw_srl, | |
1086 | unsigned short current_fw_arch_id, | |
1087 | unsigned short current_fw_branch, | |
1088 | unsigned short current_fw_build, | |
1089 | unsigned short *fw_on_ctlr_srl, | |
1090 | unsigned short *fw_on_ctlr_arch_id, | |
1091 | unsigned short *fw_on_ctlr_branch, | |
1092 | unsigned short *fw_on_ctlr_build, | |
1093 | u32 *init_connect_result) | |
1094 | { | |
1095 | TW_Command_Full *full_command_packet; | |
1096 | TW_Initconnect *tw_initconnect; | |
1097 | int request_id = 0, retval = 1; | |
1098 | ||
1099 | /* Initialize InitConnection command packet */ | |
1100 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1101 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
1102 | full_command_packet->header.header_desc.size_header = 128; | |
1103 | ||
1104 | tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand; | |
1105 | tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION); | |
1106 | tw_initconnect->request_id = request_id; | |
75913d9b | 1107 | tw_initconnect->message_credits = cpu_to_le16(message_credits); |
1da177e4 LT |
1108 | tw_initconnect->features = set_features; |
1109 | ||
1110 | /* Turn on 64-bit sgl support if we need to */ | |
1111 | tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0; | |
1112 | ||
75913d9b AR |
1113 | tw_initconnect->features = cpu_to_le32(tw_initconnect->features); |
1114 | ||
1da177e4 LT |
1115 | if (set_features & TW_EXTENDED_INIT_CONNECT) { |
1116 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED; | |
75913d9b AR |
1117 | tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl); |
1118 | tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id); | |
1119 | tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch); | |
1120 | tw_initconnect->fw_build = cpu_to_le16(current_fw_build); | |
1da177e4 LT |
1121 | } else |
1122 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE; | |
1123 | ||
1124 | /* Send command packet to the board */ | |
1125 | twa_post_command_packet(tw_dev, request_id, 1); | |
1126 | ||
1127 | /* Poll for completion */ | |
1128 | if (twa_poll_response(tw_dev, request_id, 30)) { | |
1129 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "No valid response during init connection"); | |
1130 | } else { | |
1131 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | |
75913d9b AR |
1132 | *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl); |
1133 | *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id); | |
1134 | *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch); | |
1135 | *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build); | |
1136 | *init_connect_result = le32_to_cpu(tw_initconnect->result); | |
1da177e4 LT |
1137 | } |
1138 | retval = 0; | |
1139 | } | |
1140 | ||
1141 | tw_dev->posted_request_count--; | |
1142 | tw_dev->state[request_id] = TW_S_INITIAL; | |
1143 | ||
1144 | return retval; | |
1145 | } /* End twa_initconnection() */ | |
1146 | ||
1147 | /* This function will initialize the fields of a device extension */ | |
1148 | static int twa_initialize_device_extension(TW_Device_Extension *tw_dev) | |
1149 | { | |
1150 | int i, retval = 1; | |
1151 | ||
1152 | /* Initialize command packet buffers */ | |
1153 | if (twa_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) { | |
1154 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Command packet memory allocation failed"); | |
1155 | goto out; | |
1156 | } | |
1157 | ||
1158 | /* Initialize generic buffer */ | |
1159 | if (twa_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) { | |
1160 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x17, "Generic memory allocation failed"); | |
1161 | goto out; | |
1162 | } | |
1163 | ||
1164 | /* Allocate event info space */ | |
1165 | tw_dev->event_queue[0] = kmalloc(sizeof(TW_Event) * TW_Q_LENGTH, GFP_KERNEL); | |
1166 | if (!tw_dev->event_queue[0]) { | |
1167 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed"); | |
1168 | goto out; | |
1169 | } | |
1170 | ||
1171 | memset(tw_dev->event_queue[0], 0, sizeof(TW_Event) * TW_Q_LENGTH); | |
1172 | ||
1173 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1174 | tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event))); | |
1175 | tw_dev->free_queue[i] = i; | |
1176 | tw_dev->state[i] = TW_S_INITIAL; | |
1177 | } | |
1178 | ||
1179 | tw_dev->pending_head = TW_Q_START; | |
1180 | tw_dev->pending_tail = TW_Q_START; | |
1181 | tw_dev->free_head = TW_Q_START; | |
1182 | tw_dev->free_tail = TW_Q_START; | |
1183 | tw_dev->error_sequence_id = 1; | |
1184 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1185 | ||
a12e25bd | 1186 | mutex_init(&tw_dev->ioctl_lock); |
1da177e4 LT |
1187 | init_waitqueue_head(&tw_dev->ioctl_wqueue); |
1188 | ||
1189 | retval = 0; | |
1190 | out: | |
1191 | return retval; | |
1192 | } /* End twa_initialize_device_extension() */ | |
1193 | ||
1194 | /* This function is the interrupt service routine */ | |
1195 | static irqreturn_t twa_interrupt(int irq, void *dev_instance, struct pt_regs *regs) | |
1196 | { | |
1197 | int request_id, error = 0; | |
1198 | u32 status_reg_value; | |
1199 | TW_Response_Queue response_que; | |
1200 | TW_Command_Full *full_command_packet; | |
1201 | TW_Command *command_packet; | |
1202 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; | |
1203 | int handled = 0; | |
1204 | ||
1205 | /* Get the per adapter lock */ | |
1206 | spin_lock(tw_dev->host->host_lock); | |
1207 | ||
1208 | /* Read the registers */ | |
1209 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1210 | ||
1211 | /* Check if this is our interrupt, otherwise bail */ | |
1212 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) | |
1213 | goto twa_interrupt_bail; | |
1214 | ||
1215 | handled = 1; | |
1216 | ||
1217 | /* Check controller for errors */ | |
1218 | if (twa_check_bits(status_reg_value)) { | |
1219 | if (twa_decode_bits(tw_dev, status_reg_value)) { | |
1220 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1221 | goto twa_interrupt_bail; | |
1222 | } | |
1223 | } | |
1224 | ||
1225 | /* Handle host interrupt */ | |
1226 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) | |
1227 | TW_CLEAR_HOST_INTERRUPT(tw_dev); | |
1228 | ||
1229 | /* Handle attention interrupt */ | |
1230 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { | |
1231 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
1232 | if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) { | |
1233 | twa_get_request_id(tw_dev, &request_id); | |
1234 | ||
1235 | error = twa_aen_read_queue(tw_dev, request_id); | |
1236 | if (error) { | |
1237 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1238 | twa_free_request_id(tw_dev, request_id); | |
1239 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
1240 | } | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | /* Handle command interrupt */ | |
1245 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { | |
1246 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1247 | /* Drain as many pending commands as we can */ | |
1248 | while (tw_dev->pending_request_count > 0) { | |
1249 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; | |
1250 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
1251 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x19, "Found request id that wasn't pending"); | |
1252 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1253 | goto twa_interrupt_bail; | |
1254 | } | |
1255 | if (twa_post_command_packet(tw_dev, request_id, 1)==0) { | |
1256 | tw_dev->pending_head = (tw_dev->pending_head + 1) % TW_Q_LENGTH; | |
1257 | tw_dev->pending_request_count--; | |
1258 | } else { | |
1259 | /* If we get here, we will continue re-posting on the next command interrupt */ | |
1260 | break; | |
1261 | } | |
1262 | } | |
1263 | } | |
1264 | ||
1265 | /* Handle response interrupt */ | |
1266 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { | |
1267 | ||
1268 | /* Drain the response queue from the board */ | |
1269 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
1270 | /* Complete the response */ | |
1271 | response_que.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1272 | request_id = TW_RESID_OUT(response_que.response_id); | |
1273 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1274 | error = 0; | |
1275 | command_packet = &full_command_packet->command.oldcommand; | |
1276 | /* Check for command packet errors */ | |
1277 | if (full_command_packet->command.newcommand.status != 0) { | |
1278 | if (tw_dev->srb[request_id] != 0) { | |
1279 | error = twa_fill_sense(tw_dev, request_id, 1, 1); | |
1280 | } else { | |
1281 | /* Skip ioctl error prints */ | |
1282 | if (request_id != tw_dev->chrdev_request_id) { | |
1283 | error = twa_fill_sense(tw_dev, request_id, 0, 1); | |
1284 | } | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | /* Check for correct state */ | |
1289 | if (tw_dev->state[request_id] != TW_S_POSTED) { | |
1290 | if (tw_dev->srb[request_id] != 0) { | |
1291 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted"); | |
1292 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1293 | goto twa_interrupt_bail; | |
1294 | } | |
1295 | } | |
1296 | ||
1297 | /* Check for internal command completion */ | |
1298 | if (tw_dev->srb[request_id] == 0) { | |
1299 | if (request_id != tw_dev->chrdev_request_id) { | |
1300 | if (twa_aen_complete(tw_dev, request_id)) | |
1301 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt"); | |
1302 | } else { | |
1303 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1304 | wake_up(&tw_dev->ioctl_wqueue); | |
1305 | } | |
1306 | } else { | |
1307 | twa_scsiop_execute_scsi_complete(tw_dev, request_id); | |
1308 | /* If no error command was a success */ | |
1309 | if (error == 0) { | |
1310 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
1311 | } | |
1312 | ||
1313 | /* If error, command failed */ | |
1314 | if (error == 1) { | |
1315 | /* Ask for a host reset */ | |
1316 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); | |
1317 | } | |
1318 | ||
1319 | /* Report residual bytes for single sgl */ | |
1320 | if ((tw_dev->srb[request_id]->use_sg <= 1) && (full_command_packet->command.newcommand.status == 0)) { | |
1321 | if (full_command_packet->command.newcommand.sg_list[0].length < tw_dev->srb[request_id]->request_bufflen) | |
1322 | tw_dev->srb[request_id]->resid = tw_dev->srb[request_id]->request_bufflen - full_command_packet->command.newcommand.sg_list[0].length; | |
1323 | } | |
1324 | ||
1325 | /* Now complete the io */ | |
1326 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1327 | twa_free_request_id(tw_dev, request_id); | |
1328 | tw_dev->posted_request_count--; | |
1329 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1330 | twa_unmap_scsi_data(tw_dev, request_id); | |
1331 | } | |
1332 | ||
1333 | /* Check for valid status after each drain */ | |
1334 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1335 | if (twa_check_bits(status_reg_value)) { | |
1336 | if (twa_decode_bits(tw_dev, status_reg_value)) { | |
1337 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1338 | goto twa_interrupt_bail; | |
1339 | } | |
1340 | } | |
1341 | } | |
1342 | } | |
1343 | ||
1344 | twa_interrupt_bail: | |
1345 | spin_unlock(tw_dev->host->host_lock); | |
1346 | return IRQ_RETVAL(handled); | |
1347 | } /* End twa_interrupt() */ | |
1348 | ||
1349 | /* This function will load the request id and various sgls for ioctls */ | |
1350 | static void twa_load_sgl(TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length) | |
1351 | { | |
1352 | TW_Command *oldcommand; | |
1353 | TW_Command_Apache *newcommand; | |
1354 | TW_SG_Entry *sgl; | |
1355 | ||
1356 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
1357 | newcommand = &full_command_packet->command.newcommand; | |
1358 | newcommand->request_id__lunl = | |
1359 | TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id); | |
75913d9b AR |
1360 | newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); |
1361 | newcommand->sg_list[0].length = cpu_to_le32(length); | |
1da177e4 | 1362 | newcommand->sgl_entries__lunh = |
75913d9b | 1363 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), 1)); |
1da177e4 LT |
1364 | } else { |
1365 | oldcommand = &full_command_packet->command.oldcommand; | |
1366 | oldcommand->request_id = request_id; | |
1367 | ||
1368 | if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) { | |
1369 | /* Load the sg list */ | |
1370 | sgl = (TW_SG_Entry *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset)); | |
75913d9b AR |
1371 | sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); |
1372 | sgl->length = cpu_to_le32(length); | |
1da177e4 LT |
1373 | |
1374 | if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4)) | |
1375 | oldcommand->size += 1; | |
1376 | } | |
1377 | } | |
1378 | } /* End twa_load_sgl() */ | |
1379 | ||
1380 | /* This function will perform a pci-dma mapping for a scatter gather list */ | |
1381 | static int twa_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id) | |
1382 | { | |
1383 | int use_sg; | |
1384 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1385 | struct pci_dev *pdev = tw_dev->tw_pci_dev; | |
1386 | int retval = 0; | |
1387 | ||
1388 | if (cmd->use_sg == 0) | |
1389 | goto out; | |
1390 | ||
5d5ff44f | 1391 | use_sg = pci_map_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL); |
1da177e4 LT |
1392 | |
1393 | if (use_sg == 0) { | |
1394 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list"); | |
1395 | goto out; | |
1396 | } | |
1397 | ||
1398 | cmd->SCp.phase = TW_PHASE_SGLIST; | |
1399 | cmd->SCp.have_data_in = use_sg; | |
1400 | retval = use_sg; | |
1401 | out: | |
1402 | return retval; | |
1403 | } /* End twa_map_scsi_sg_data() */ | |
1404 | ||
1405 | /* This function will perform a pci-dma map for a single buffer */ | |
1406 | static dma_addr_t twa_map_scsi_single_data(TW_Device_Extension *tw_dev, int request_id) | |
1407 | { | |
1408 | dma_addr_t mapping; | |
1409 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1410 | struct pci_dev *pdev = tw_dev->tw_pci_dev; | |
62288f10 | 1411 | dma_addr_t retval = 0; |
1da177e4 LT |
1412 | |
1413 | if (cmd->request_bufflen == 0) { | |
1414 | retval = 0; | |
1415 | goto out; | |
1416 | } | |
1417 | ||
1418 | mapping = pci_map_single(pdev, cmd->request_buffer, cmd->request_bufflen, DMA_BIDIRECTIONAL); | |
1419 | ||
1420 | if (mapping == 0) { | |
1421 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Failed to map page"); | |
1422 | goto out; | |
1423 | } | |
1424 | ||
1425 | cmd->SCp.phase = TW_PHASE_SINGLE; | |
1426 | cmd->SCp.have_data_in = mapping; | |
1427 | retval = mapping; | |
1428 | out: | |
1429 | return retval; | |
1430 | } /* End twa_map_scsi_single_data() */ | |
1431 | ||
1432 | /* This function will poll for a response interrupt of a request */ | |
1433 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) | |
1434 | { | |
1435 | int retval = 1, found = 0, response_request_id; | |
1436 | TW_Response_Queue response_queue; | |
1437 | TW_Command_Full *full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1438 | ||
1439 | if (twa_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds) == 0) { | |
1440 | response_queue.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1441 | response_request_id = TW_RESID_OUT(response_queue.response_id); | |
1442 | if (request_id != response_request_id) { | |
1443 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "Found unexpected request id while polling for response"); | |
1444 | goto out; | |
1445 | } | |
1446 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
1447 | if (full_command_packet->command.newcommand.status != 0) { | |
1448 | /* bad response */ | |
1449 | twa_fill_sense(tw_dev, request_id, 0, 0); | |
1450 | goto out; | |
1451 | } | |
1452 | found = 1; | |
1453 | } else { | |
1454 | if (full_command_packet->command.oldcommand.status != 0) { | |
1455 | /* bad response */ | |
1456 | twa_fill_sense(tw_dev, request_id, 0, 0); | |
1457 | goto out; | |
1458 | } | |
1459 | found = 1; | |
1460 | } | |
1461 | } | |
1462 | ||
1463 | if (found) | |
1464 | retval = 0; | |
1465 | out: | |
1466 | return retval; | |
1467 | } /* End twa_poll_response() */ | |
1468 | ||
1469 | /* This function will poll the status register for a flag */ | |
1470 | static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
1471 | { | |
1472 | u32 status_reg_value; | |
1473 | unsigned long before; | |
1474 | int retval = 1; | |
1475 | ||
1476 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1477 | before = jiffies; | |
1478 | ||
1479 | if (twa_check_bits(status_reg_value)) | |
1480 | twa_decode_bits(tw_dev, status_reg_value); | |
1481 | ||
1482 | while ((status_reg_value & flag) != flag) { | |
1483 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1484 | ||
1485 | if (twa_check_bits(status_reg_value)) | |
1486 | twa_decode_bits(tw_dev, status_reg_value); | |
1487 | ||
1488 | if (time_after(jiffies, before + HZ * seconds)) | |
1489 | goto out; | |
1490 | ||
1491 | msleep(50); | |
1492 | } | |
1493 | retval = 0; | |
1494 | out: | |
1495 | return retval; | |
1496 | } /* End twa_poll_status() */ | |
1497 | ||
1498 | /* This function will poll the status register for disappearance of a flag */ | |
1499 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
1500 | { | |
1501 | u32 status_reg_value; | |
1502 | unsigned long before; | |
1503 | int retval = 1; | |
1504 | ||
1505 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1506 | before = jiffies; | |
1507 | ||
1508 | if (twa_check_bits(status_reg_value)) | |
1509 | twa_decode_bits(tw_dev, status_reg_value); | |
1510 | ||
1511 | while ((status_reg_value & flag) != 0) { | |
1512 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1513 | if (twa_check_bits(status_reg_value)) | |
1514 | twa_decode_bits(tw_dev, status_reg_value); | |
1515 | ||
1516 | if (time_after(jiffies, before + HZ * seconds)) | |
1517 | goto out; | |
1518 | ||
1519 | msleep(50); | |
1520 | } | |
1521 | retval = 0; | |
1522 | out: | |
1523 | return retval; | |
1524 | } /* End twa_poll_status_gone() */ | |
1525 | ||
1526 | /* This function will attempt to post a command packet to the board */ | |
1527 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal) | |
1528 | { | |
1529 | u32 status_reg_value; | |
1530 | dma_addr_t command_que_value; | |
1531 | int retval = 1; | |
1532 | ||
1533 | command_que_value = tw_dev->command_packet_phys[request_id]; | |
1534 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1535 | ||
1536 | if (twa_check_bits(status_reg_value)) | |
1537 | twa_decode_bits(tw_dev, status_reg_value); | |
1538 | ||
1539 | if (((tw_dev->pending_request_count > 0) && (tw_dev->state[request_id] != TW_S_PENDING)) || (status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL)) { | |
1540 | ||
1541 | /* Only pend internal driver commands */ | |
1542 | if (!internal) { | |
1543 | retval = SCSI_MLQUEUE_HOST_BUSY; | |
1544 | goto out; | |
1545 | } | |
1546 | ||
1547 | /* Couldn't post the command packet, so we do it later */ | |
1548 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
1549 | tw_dev->state[request_id] = TW_S_PENDING; | |
1550 | tw_dev->pending_request_count++; | |
1551 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { | |
1552 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; | |
1553 | } | |
1554 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; | |
1555 | tw_dev->pending_tail = (tw_dev->pending_tail + 1) % TW_Q_LENGTH; | |
1556 | } | |
1557 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); | |
1558 | goto out; | |
1559 | } else { | |
1560 | /* We successfully posted the command packet */ | |
1561 | if (sizeof(dma_addr_t) > 4) { | |
1562 | command_que_value += TW_COMMAND_OFFSET; | |
1563 | writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1564 | writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR(tw_dev) + 0x4); | |
1565 | } else { | |
1566 | writel(TW_COMMAND_OFFSET + command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1567 | } | |
1568 | tw_dev->state[request_id] = TW_S_POSTED; | |
1569 | tw_dev->posted_request_count++; | |
1570 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { | |
1571 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | |
1572 | } | |
1573 | } | |
1574 | retval = 0; | |
1575 | out: | |
1576 | return retval; | |
1577 | } /* End twa_post_command_packet() */ | |
1578 | ||
1579 | /* This function will reset a device extension */ | |
1580 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset) | |
1581 | { | |
1582 | int i = 0; | |
1583 | int retval = 1; | |
1584 | unsigned long flags = 0; | |
1585 | ||
1586 | set_bit(TW_IN_RESET, &tw_dev->flags); | |
1587 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1588 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1589 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1590 | ||
1591 | /* Abort all requests that are in progress */ | |
1592 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1593 | if ((tw_dev->state[i] != TW_S_FINISHED) && | |
1594 | (tw_dev->state[i] != TW_S_INITIAL) && | |
1595 | (tw_dev->state[i] != TW_S_COMPLETED)) { | |
1596 | if (tw_dev->srb[i]) { | |
1597 | tw_dev->srb[i]->result = (DID_RESET << 16); | |
1598 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); | |
1599 | twa_unmap_scsi_data(tw_dev, i); | |
1600 | } | |
1601 | } | |
1602 | } | |
1603 | ||
1604 | /* Reset queues and counts */ | |
1605 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1606 | tw_dev->free_queue[i] = i; | |
1607 | tw_dev->state[i] = TW_S_INITIAL; | |
1608 | } | |
1609 | tw_dev->free_head = TW_Q_START; | |
1610 | tw_dev->free_tail = TW_Q_START; | |
1611 | tw_dev->posted_request_count = 0; | |
1612 | tw_dev->pending_request_count = 0; | |
1613 | tw_dev->pending_head = TW_Q_START; | |
1614 | tw_dev->pending_tail = TW_Q_START; | |
1615 | tw_dev->reset_print = 0; | |
1616 | ||
1617 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1618 | ||
1619 | if (twa_reset_sequence(tw_dev, 1)) | |
1620 | goto out; | |
1621 | ||
1622 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
1623 | ||
1624 | /* Wake up any ioctl that was pending before the reset */ | |
1625 | if ((tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE) || (ioctl_reset)) { | |
1626 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
1627 | } else { | |
1628 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1629 | wake_up(&tw_dev->ioctl_wqueue); | |
1630 | } | |
1631 | retval = 0; | |
1632 | out: | |
1633 | return retval; | |
1634 | } /* End twa_reset_device_extension() */ | |
1635 | ||
1636 | /* This function will reset a controller */ | |
1637 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset) | |
1638 | { | |
1639 | int tries = 0, retval = 1, flashed = 0, do_soft_reset = soft_reset; | |
1640 | ||
1641 | while (tries < TW_MAX_RESET_TRIES) { | |
49bfd8db | 1642 | if (do_soft_reset) { |
1da177e4 | 1643 | TW_SOFT_RESET(tw_dev); |
49bfd8db AR |
1644 | /* Clear pchip/response queue on 9550SX */ |
1645 | if (twa_empty_response_queue_large(tw_dev)) { | |
1646 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x36, "Response queue (large) empty failed during reset sequence"); | |
1647 | do_soft_reset = 1; | |
1648 | tries++; | |
1649 | continue; | |
1650 | } | |
1651 | } | |
1da177e4 LT |
1652 | |
1653 | /* Make sure controller is in a good state */ | |
1654 | if (twa_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY | (do_soft_reset == 1 ? TW_STATUS_ATTENTION_INTERRUPT : 0), 60)) { | |
1655 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Microcontroller not ready during reset sequence"); | |
1656 | do_soft_reset = 1; | |
1657 | tries++; | |
1658 | continue; | |
1659 | } | |
1660 | ||
1661 | /* Empty response queue */ | |
1662 | if (twa_empty_response_queue(tw_dev)) { | |
1663 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Response queue empty failed during reset sequence"); | |
1664 | do_soft_reset = 1; | |
1665 | tries++; | |
1666 | continue; | |
1667 | } | |
1668 | ||
1669 | flashed = 0; | |
1670 | ||
1671 | /* Check for compatibility/flash */ | |
1672 | if (twa_check_srl(tw_dev, &flashed)) { | |
1673 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Compatibility check failed during reset sequence"); | |
1674 | do_soft_reset = 1; | |
1675 | tries++; | |
1676 | continue; | |
1677 | } else { | |
1678 | if (flashed) { | |
1679 | tries++; | |
1680 | continue; | |
1681 | } | |
1682 | } | |
1683 | ||
1684 | /* Drain the AEN queue */ | |
1685 | if (twa_aen_drain_queue(tw_dev, soft_reset)) { | |
1686 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x22, "AEN drain failed during reset sequence"); | |
1687 | do_soft_reset = 1; | |
1688 | tries++; | |
1689 | continue; | |
1690 | } | |
1691 | ||
1692 | /* If we got here, controller is in a good state */ | |
1693 | retval = 0; | |
1694 | goto out; | |
1695 | } | |
1696 | out: | |
1697 | return retval; | |
1698 | } /* End twa_reset_sequence() */ | |
1699 | ||
1700 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | |
1701 | static int twa_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) | |
1702 | { | |
1703 | int heads, sectors, cylinders; | |
1704 | TW_Device_Extension *tw_dev; | |
1705 | ||
1706 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | |
1707 | ||
1708 | if (capacity >= 0x200000) { | |
1709 | heads = 255; | |
1710 | sectors = 63; | |
1711 | cylinders = sector_div(capacity, heads * sectors); | |
1712 | } else { | |
1713 | heads = 64; | |
1714 | sectors = 32; | |
1715 | cylinders = sector_div(capacity, heads * sectors); | |
1716 | } | |
1717 | ||
1718 | geom[0] = heads; | |
1719 | geom[1] = sectors; | |
1720 | geom[2] = cylinders; | |
1721 | ||
1722 | return 0; | |
1723 | } /* End twa_scsi_biosparam() */ | |
1724 | ||
1725 | /* This is the new scsi eh reset function */ | |
1726 | static int twa_scsi_eh_reset(struct scsi_cmnd *SCpnt) | |
1727 | { | |
1728 | TW_Device_Extension *tw_dev = NULL; | |
1729 | int retval = FAILED; | |
1730 | ||
1731 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1732 | ||
1da177e4 LT |
1733 | tw_dev->num_resets++; |
1734 | ||
017560fc JG |
1735 | sdev_printk(KERN_WARNING, SCpnt->device, |
1736 | "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n", | |
1737 | TW_DRIVER, 0x2c, SCpnt->cmnd[0]); | |
1da177e4 LT |
1738 | |
1739 | /* Now reset the card and some of the device extension data */ | |
1740 | if (twa_reset_device_extension(tw_dev, 0)) { | |
1741 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2b, "Controller reset failed during scsi host reset"); | |
1742 | goto out; | |
1743 | } | |
1744 | ||
1745 | retval = SUCCESS; | |
1746 | out: | |
1da177e4 LT |
1747 | return retval; |
1748 | } /* End twa_scsi_eh_reset() */ | |
1749 | ||
1750 | /* This is the main scsi queue function to handle scsi opcodes */ | |
1751 | static int twa_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) | |
1752 | { | |
1753 | int request_id, retval; | |
1754 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1755 | ||
1756 | /* Check if this FW supports luns */ | |
1757 | if ((SCpnt->device->lun != 0) && (tw_dev->working_srl < TW_FW_SRL_LUNS_SUPPORTED)) { | |
1758 | SCpnt->result = (DID_BAD_TARGET << 16); | |
1759 | done(SCpnt); | |
1760 | retval = 0; | |
1761 | goto out; | |
1762 | } | |
1763 | ||
1764 | /* Save done function into scsi_cmnd struct */ | |
1765 | SCpnt->scsi_done = done; | |
1766 | ||
1767 | /* Get a free request id */ | |
1768 | twa_get_request_id(tw_dev, &request_id); | |
1769 | ||
1770 | /* Save the scsi command for use by the ISR */ | |
1771 | tw_dev->srb[request_id] = SCpnt; | |
1772 | ||
1773 | /* Initialize phase to zero */ | |
1774 | SCpnt->SCp.phase = TW_PHASE_INITIAL; | |
1775 | ||
1776 | retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); | |
1777 | switch (retval) { | |
1778 | case SCSI_MLQUEUE_HOST_BUSY: | |
1779 | twa_free_request_id(tw_dev, request_id); | |
1780 | break; | |
1781 | case 1: | |
1782 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1783 | twa_free_request_id(tw_dev, request_id); | |
1784 | SCpnt->result = (DID_ERROR << 16); | |
1785 | done(SCpnt); | |
1786 | retval = 0; | |
1787 | } | |
1788 | out: | |
1789 | return retval; | |
1790 | } /* End twa_scsi_queue() */ | |
1791 | ||
1792 | /* This function hands scsi cdb's to the firmware */ | |
1793 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg) | |
1794 | { | |
1795 | TW_Command_Full *full_command_packet; | |
1796 | TW_Command_Apache *command_packet; | |
1797 | u32 num_sectors = 0x0; | |
1798 | int i, sg_count; | |
1799 | struct scsi_cmnd *srb = NULL; | |
1800 | struct scatterlist *sglist = NULL; | |
62288f10 | 1801 | dma_addr_t buffaddr = 0x0; |
1da177e4 LT |
1802 | int retval = 1; |
1803 | ||
1804 | if (tw_dev->srb[request_id]) { | |
1805 | if (tw_dev->srb[request_id]->request_buffer) { | |
1806 | sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; | |
1807 | } | |
1808 | srb = tw_dev->srb[request_id]; | |
1809 | } | |
1810 | ||
1811 | /* Initialize command packet */ | |
1812 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1813 | full_command_packet->header.header_desc.size_header = 128; | |
1814 | full_command_packet->header.status_block.error = 0; | |
1815 | full_command_packet->header.status_block.severity__reserved = 0; | |
1816 | ||
1817 | command_packet = &full_command_packet->command.newcommand; | |
1818 | command_packet->status = 0; | |
1819 | command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI); | |
1820 | ||
1821 | /* We forced 16 byte cdb use earlier */ | |
1822 | if (!cdb) | |
1823 | memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN); | |
1824 | else | |
1825 | memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN); | |
1826 | ||
1827 | if (srb) { | |
1828 | command_packet->unit = srb->device->id; | |
1829 | command_packet->request_id__lunl = | |
75913d9b | 1830 | cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id)); |
1da177e4 LT |
1831 | } else { |
1832 | command_packet->request_id__lunl = | |
75913d9b | 1833 | cpu_to_le16(TW_REQ_LUN_IN(0, request_id)); |
1da177e4 LT |
1834 | command_packet->unit = 0; |
1835 | } | |
1836 | ||
1837 | command_packet->sgl_offset = 16; | |
1838 | ||
1839 | if (!sglistarg) { | |
1840 | /* Map sglist from scsi layer to cmd packet */ | |
1841 | if (tw_dev->srb[request_id]->use_sg == 0) { | |
1842 | if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH) { | |
75913d9b AR |
1843 | command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
1844 | command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH); | |
d327d082 AR |
1845 | if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL) |
1846 | memcpy(tw_dev->generic_buffer_virt[request_id], tw_dev->srb[request_id]->request_buffer, tw_dev->srb[request_id]->request_bufflen); | |
1da177e4 LT |
1847 | } else { |
1848 | buffaddr = twa_map_scsi_single_data(tw_dev, request_id); | |
1849 | if (buffaddr == 0) | |
1850 | goto out; | |
1851 | ||
75913d9b AR |
1852 | command_packet->sg_list[0].address = TW_CPU_TO_SGL(buffaddr); |
1853 | command_packet->sg_list[0].length = cpu_to_le32(tw_dev->srb[request_id]->request_bufflen); | |
1da177e4 | 1854 | } |
75913d9b | 1855 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), 1)); |
1da177e4 | 1856 | |
75913d9b | 1857 | if (command_packet->sg_list[0].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { |
1da177e4 LT |
1858 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2d, "Found unaligned address during execute scsi"); |
1859 | goto out; | |
1860 | } | |
1861 | } | |
1862 | ||
1863 | if (tw_dev->srb[request_id]->use_sg > 0) { | |
1864 | if ((tw_dev->srb[request_id]->use_sg == 1) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) { | |
d327d082 AR |
1865 | if (tw_dev->srb[request_id]->sc_data_direction == DMA_TO_DEVICE || tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL) { |
1866 | struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; | |
1867 | char *buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; | |
1868 | memcpy(tw_dev->generic_buffer_virt[request_id], buf, sg->length); | |
1869 | kunmap_atomic(buf - sg->offset, KM_IRQ0); | |
1870 | } | |
75913d9b AR |
1871 | command_packet->sg_list[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); |
1872 | command_packet->sg_list[0].length = cpu_to_le32(TW_MIN_SGL_LENGTH); | |
1da177e4 LT |
1873 | } else { |
1874 | sg_count = twa_map_scsi_sg_data(tw_dev, request_id); | |
1875 | if (sg_count == 0) | |
1876 | goto out; | |
1877 | ||
1878 | for (i = 0; i < sg_count; i++) { | |
75913d9b AR |
1879 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(&sglist[i])); |
1880 | command_packet->sg_list[i].length = cpu_to_le32(sg_dma_len(&sglist[i])); | |
1881 | if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { | |
1da177e4 LT |
1882 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi"); |
1883 | goto out; | |
1884 | } | |
1885 | } | |
1886 | } | |
75913d9b | 1887 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), tw_dev->srb[request_id]->use_sg)); |
1da177e4 LT |
1888 | } |
1889 | } else { | |
1890 | /* Internal cdb post */ | |
1891 | for (i = 0; i < use_sg; i++) { | |
75913d9b AR |
1892 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address); |
1893 | command_packet->sg_list[i].length = cpu_to_le32(sglistarg[i].length); | |
1894 | if (command_packet->sg_list[i].address & TW_CPU_TO_SGL(TW_ALIGNMENT_9000_SGL)) { | |
1da177e4 LT |
1895 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2f, "Found unaligned sgl address during internal post"); |
1896 | goto out; | |
1897 | } | |
1898 | } | |
75913d9b | 1899 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg)); |
1da177e4 LT |
1900 | } |
1901 | ||
1902 | if (srb) { | |
1903 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) | |
1904 | num_sectors = (u32)srb->cmnd[4]; | |
1905 | ||
1906 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) | |
1907 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); | |
1908 | } | |
1909 | ||
1910 | /* Update sector statistic */ | |
1911 | tw_dev->sector_count = num_sectors; | |
1912 | if (tw_dev->sector_count > tw_dev->max_sector_count) | |
1913 | tw_dev->max_sector_count = tw_dev->sector_count; | |
1914 | ||
1915 | /* Update SG statistics */ | |
1916 | if (srb) { | |
1917 | tw_dev->sgl_entries = tw_dev->srb[request_id]->use_sg; | |
1918 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) | |
1919 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | |
1920 | } | |
1921 | ||
1922 | /* Now post the command to the board */ | |
1923 | if (srb) { | |
1924 | retval = twa_post_command_packet(tw_dev, request_id, 0); | |
1925 | } else { | |
1926 | twa_post_command_packet(tw_dev, request_id, 1); | |
1927 | retval = 0; | |
1928 | } | |
1929 | out: | |
1930 | return retval; | |
1931 | } /* End twa_scsiop_execute_scsi() */ | |
1932 | ||
1933 | /* This function completes an execute scsi operation */ | |
1934 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id) | |
1935 | { | |
d327d082 AR |
1936 | if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH && |
1937 | (tw_dev->srb[request_id]->sc_data_direction == DMA_FROM_DEVICE || | |
1938 | tw_dev->srb[request_id]->sc_data_direction == DMA_BIDIRECTIONAL)) { | |
1939 | if (tw_dev->srb[request_id]->use_sg == 0) { | |
1940 | memcpy(tw_dev->srb[request_id]->request_buffer, | |
1941 | tw_dev->generic_buffer_virt[request_id], | |
1942 | tw_dev->srb[request_id]->request_bufflen); | |
1943 | } | |
1944 | if (tw_dev->srb[request_id]->use_sg == 1) { | |
1945 | struct scatterlist *sg = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; | |
1e08dcb3 AR |
1946 | char *buf; |
1947 | unsigned long flags = 0; | |
1948 | local_irq_save(flags); | |
1949 | buf = kmap_atomic(sg->page, KM_IRQ0) + sg->offset; | |
d327d082 AR |
1950 | memcpy(buf, tw_dev->generic_buffer_virt[request_id], sg->length); |
1951 | kunmap_atomic(buf - sg->offset, KM_IRQ0); | |
1e08dcb3 | 1952 | local_irq_restore(flags); |
d327d082 | 1953 | } |
1da177e4 LT |
1954 | } |
1955 | } /* End twa_scsiop_execute_scsi_complete() */ | |
1956 | ||
1957 | /* This function tells the controller to shut down */ | |
1958 | static void __twa_shutdown(TW_Device_Extension *tw_dev) | |
1959 | { | |
1960 | /* Disable interrupts */ | |
1961 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1962 | ||
1963 | printk(KERN_WARNING "3w-9xxx: Shutting down host %d.\n", tw_dev->host->host_no); | |
1964 | ||
1965 | /* Tell the card we are shutting down */ | |
1966 | if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | |
1967 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x31, "Connection shutdown failed"); | |
1968 | } else { | |
1969 | printk(KERN_WARNING "3w-9xxx: Shutdown complete.\n"); | |
1970 | } | |
1971 | ||
1972 | /* Clear all interrupts just before exit */ | |
1973 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1974 | } /* End __twa_shutdown() */ | |
1975 | ||
1976 | /* Wrapper for __twa_shutdown */ | |
d18c3db5 | 1977 | static void twa_shutdown(struct pci_dev *pdev) |
1da177e4 | 1978 | { |
d18c3db5 | 1979 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
1da177e4 LT |
1980 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
1981 | ||
1982 | __twa_shutdown(tw_dev); | |
1983 | } /* End twa_shutdown() */ | |
1984 | ||
1985 | /* This function will look up a string */ | |
1986 | static char *twa_string_lookup(twa_message_type *table, unsigned int code) | |
1987 | { | |
1988 | int index; | |
1989 | ||
1990 | for (index = 0; ((code != table[index].code) && | |
1991 | (table[index].text != (char *)0)); index++); | |
1992 | return(table[index].text); | |
1993 | } /* End twa_string_lookup() */ | |
1994 | ||
1995 | /* This function will perform a pci-dma unmap */ | |
1996 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) | |
1997 | { | |
1998 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1999 | struct pci_dev *pdev = tw_dev->tw_pci_dev; | |
2000 | ||
2001 | switch(cmd->SCp.phase) { | |
2002 | case TW_PHASE_SINGLE: | |
2003 | pci_unmap_single(pdev, cmd->SCp.have_data_in, cmd->request_bufflen, DMA_BIDIRECTIONAL); | |
2004 | break; | |
2005 | case TW_PHASE_SGLIST: | |
2006 | pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL); | |
2007 | break; | |
2008 | } | |
2009 | } /* End twa_unmap_scsi_data() */ | |
2010 | ||
2011 | /* scsi_host_template initializer */ | |
2012 | static struct scsi_host_template driver_template = { | |
2013 | .module = THIS_MODULE, | |
2014 | .name = "3ware 9000 Storage Controller", | |
2015 | .queuecommand = twa_scsi_queue, | |
2016 | .eh_host_reset_handler = twa_scsi_eh_reset, | |
2017 | .bios_param = twa_scsi_biosparam, | |
2018 | .change_queue_depth = twa_change_queue_depth, | |
2019 | .can_queue = TW_Q_LENGTH-2, | |
2020 | .this_id = -1, | |
2021 | .sg_tablesize = TW_APACHE_MAX_SGL_LENGTH, | |
2022 | .max_sectors = TW_MAX_SECTORS, | |
2023 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | |
2024 | .use_clustering = ENABLE_CLUSTERING, | |
2025 | .shost_attrs = twa_host_attrs, | |
2026 | .emulated = 1 | |
2027 | }; | |
2028 | ||
2029 | /* This function will probe and initialize a card */ | |
2030 | static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) | |
2031 | { | |
2032 | struct Scsi_Host *host = NULL; | |
2033 | TW_Device_Extension *tw_dev; | |
2034 | u32 mem_addr; | |
2035 | int retval = -ENODEV; | |
2036 | ||
2037 | retval = pci_enable_device(pdev); | |
2038 | if (retval) { | |
2039 | TW_PRINTK(host, TW_DRIVER, 0x34, "Failed to enable pci device"); | |
2040 | goto out_disable_device; | |
2041 | } | |
2042 | ||
2043 | pci_set_master(pdev); | |
2044 | ||
2045 | retval = pci_set_dma_mask(pdev, sizeof(dma_addr_t) > 4 ? DMA_64BIT_MASK : DMA_32BIT_MASK); | |
2046 | if (retval) { | |
2047 | TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask"); | |
2048 | goto out_disable_device; | |
2049 | } | |
2050 | ||
2051 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | |
2052 | if (!host) { | |
2053 | TW_PRINTK(host, TW_DRIVER, 0x24, "Failed to allocate memory for device extension"); | |
2054 | retval = -ENOMEM; | |
2055 | goto out_disable_device; | |
2056 | } | |
2057 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
2058 | ||
2059 | memset(tw_dev, 0, sizeof(TW_Device_Extension)); | |
2060 | ||
2061 | /* Save values to device extension */ | |
2062 | tw_dev->host = host; | |
2063 | tw_dev->tw_pci_dev = pdev; | |
2064 | ||
2065 | if (twa_initialize_device_extension(tw_dev)) { | |
2066 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension"); | |
2067 | goto out_free_device_extension; | |
2068 | } | |
2069 | ||
2070 | /* Request IO regions */ | |
2071 | retval = pci_request_regions(pdev, "3w-9xxx"); | |
2072 | if (retval) { | |
2073 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Failed to get mem region"); | |
2074 | goto out_free_device_extension; | |
2075 | } | |
2076 | ||
49bfd8db AR |
2077 | if (pdev->device == PCI_DEVICE_ID_3WARE_9000) |
2078 | mem_addr = pci_resource_start(pdev, 1); | |
2079 | else | |
2080 | mem_addr = pci_resource_start(pdev, 2); | |
1da177e4 LT |
2081 | |
2082 | /* Save base address */ | |
2083 | tw_dev->base_addr = ioremap(mem_addr, PAGE_SIZE); | |
2084 | if (!tw_dev->base_addr) { | |
2085 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap"); | |
2086 | goto out_release_mem_region; | |
2087 | } | |
2088 | ||
2089 | /* Disable interrupts on the card */ | |
2090 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2091 | ||
2092 | /* Initialize the card */ | |
2093 | if (twa_reset_sequence(tw_dev, 0)) | |
2094 | goto out_release_mem_region; | |
2095 | ||
2096 | /* Set host specific parameters */ | |
2097 | host->max_id = TW_MAX_UNITS; | |
2098 | host->max_cmd_len = TW_MAX_CDB_LEN; | |
2099 | ||
2100 | /* Channels aren't supported by adapter */ | |
2101 | host->max_lun = TW_MAX_LUNS(tw_dev->working_srl); | |
2102 | host->max_channel = 0; | |
2103 | ||
2104 | /* Register the card with the kernel SCSI layer */ | |
2105 | retval = scsi_add_host(host, &pdev->dev); | |
2106 | if (retval) { | |
2107 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x27, "scsi add host failed"); | |
2108 | goto out_release_mem_region; | |
2109 | } | |
2110 | ||
2111 | pci_set_drvdata(pdev, host); | |
2112 | ||
2113 | printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%x, IRQ: %d.\n", | |
2114 | host->host_no, mem_addr, pdev->irq); | |
2115 | printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n", | |
2116 | host->host_no, | |
2117 | (char *)twa_get_param(tw_dev, 0, TW_VERSION_TABLE, | |
2118 | TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH), | |
2119 | (char *)twa_get_param(tw_dev, 1, TW_VERSION_TABLE, | |
2120 | TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH), | |
75913d9b AR |
2121 | le32_to_cpu(*(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE, |
2122 | TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH))); | |
1da177e4 LT |
2123 | |
2124 | /* Now setup the interrupt handler */ | |
1d6f359a | 2125 | retval = request_irq(pdev->irq, twa_interrupt, IRQF_SHARED, "3w-9xxx", tw_dev); |
1da177e4 LT |
2126 | if (retval) { |
2127 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x30, "Error requesting IRQ"); | |
2128 | goto out_remove_host; | |
2129 | } | |
2130 | ||
2131 | twa_device_extension_list[twa_device_extension_count] = tw_dev; | |
2132 | twa_device_extension_count++; | |
2133 | ||
2134 | /* Re-enable interrupts on the card */ | |
2135 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2136 | ||
2137 | /* Finally, scan the host */ | |
2138 | scsi_scan_host(host); | |
2139 | ||
2140 | if (twa_major == -1) { | |
2141 | if ((twa_major = register_chrdev (0, "twa", &twa_fops)) < 0) | |
2142 | TW_PRINTK(host, TW_DRIVER, 0x29, "Failed to register character device"); | |
2143 | } | |
2144 | return 0; | |
2145 | ||
2146 | out_remove_host: | |
2147 | scsi_remove_host(host); | |
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 | ||
2173 | /* Free up the IRQ */ | |
2174 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
2175 | ||
2176 | /* Shutdown the card */ | |
2177 | __twa_shutdown(tw_dev); | |
2178 | ||
2179 | /* Free up the mem region */ | |
2180 | pci_release_regions(pdev); | |
2181 | ||
2182 | /* Free up device extension resources */ | |
2183 | twa_free_device_extension(tw_dev); | |
2184 | ||
2185 | scsi_host_put(tw_dev->host); | |
2186 | pci_disable_device(pdev); | |
2187 | twa_device_extension_count--; | |
2188 | } /* End twa_remove() */ | |
2189 | ||
2190 | /* PCI Devices supported by this driver */ | |
2191 | static struct pci_device_id twa_pci_tbl[] __devinitdata = { | |
2192 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000, | |
2193 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
49bfd8db AR |
2194 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9550SX, |
2195 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
1da177e4 LT |
2196 | { } |
2197 | }; | |
2198 | MODULE_DEVICE_TABLE(pci, twa_pci_tbl); | |
2199 | ||
2200 | /* pci_driver initializer */ | |
2201 | static struct pci_driver twa_driver = { | |
2202 | .name = "3w-9xxx", | |
2203 | .id_table = twa_pci_tbl, | |
2204 | .probe = twa_probe, | |
2205 | .remove = twa_remove, | |
d18c3db5 | 2206 | .shutdown = twa_shutdown |
1da177e4 LT |
2207 | }; |
2208 | ||
2209 | /* This function is called on driver initialization */ | |
2210 | static int __init twa_init(void) | |
2211 | { | |
2212 | printk(KERN_WARNING "3ware 9000 Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | |
2213 | ||
2214 | return pci_module_init(&twa_driver); | |
2215 | } /* End twa_init() */ | |
2216 | ||
2217 | /* This function is called on driver exit */ | |
2218 | static void __exit twa_exit(void) | |
2219 | { | |
2220 | pci_unregister_driver(&twa_driver); | |
2221 | } /* End twa_exit() */ | |
2222 | ||
2223 | module_init(twa_init); | |
2224 | module_exit(twa_exit); | |
2225 |