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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> | |
5 | ||
6 | Copyright (C) 2004-2005 Applied Micro Circuits Corporation. | |
7 | ||
8 | This program is free software; you can redistribute it and/or modify | |
9 | it under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; version 2 of the License. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | NO WARRANTY | |
18 | THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR | |
19 | CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT | |
20 | LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, | |
21 | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is | |
22 | solely responsible for determining the appropriateness of using and | |
23 | distributing the Program and assumes all risks associated with its | |
24 | exercise of rights under this Agreement, including but not limited to | |
25 | the risks and costs of program errors, damage to or loss of data, | |
26 | programs or equipment, and unavailability or interruption of operations. | |
27 | ||
28 | DISCLAIMER OF LIABILITY | |
29 | NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY | |
30 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
31 | DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND | |
32 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
33 | TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
34 | USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED | |
35 | HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES | |
36 | ||
37 | You should have received a copy of the GNU General Public License | |
38 | along with this program; if not, write to the Free Software | |
39 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
40 | ||
41 | Bugs/Comments/Suggestions should be mailed to: | |
42 | linuxraid@amcc.com | |
43 | ||
44 | For more information, goto: | |
45 | http://www.amcc.com | |
46 | ||
47 | Note: This version of the driver does not contain a bundled firmware | |
48 | image. | |
49 | ||
50 | History | |
51 | ------- | |
52 | 2.26.02.000 - Driver cleanup for kernel submission. | |
53 | 2.26.02.001 - Replace schedule_timeout() calls with msleep(). | |
54 | 2.26.02.002 - Add support for PAE mode. | |
55 | Add lun support. | |
56 | Fix twa_remove() to free irq handler/unregister_chrdev() | |
57 | before shutting down card. | |
58 | Change to new 'change_queue_depth' api. | |
59 | Fix 'handled=1' ISR usage, remove bogus IRQ check. | |
60 | Remove un-needed eh_abort handler. | |
61 | Add support for embedded firmware error strings. | |
62 | */ | |
63 | ||
64 | #include <linux/module.h> | |
65 | #include <linux/reboot.h> | |
66 | #include <linux/spinlock.h> | |
67 | #include <linux/interrupt.h> | |
68 | #include <linux/moduleparam.h> | |
69 | #include <linux/errno.h> | |
70 | #include <linux/types.h> | |
71 | #include <linux/delay.h> | |
72 | #include <linux/pci.h> | |
73 | #include <linux/time.h> | |
74 | #include <asm/io.h> | |
75 | #include <asm/irq.h> | |
76 | #include <asm/uaccess.h> | |
77 | #include <scsi/scsi.h> | |
78 | #include <scsi/scsi_host.h> | |
79 | #include <scsi/scsi_tcq.h> | |
80 | #include <scsi/scsi_cmnd.h> | |
81 | #include "3w-9xxx.h" | |
82 | ||
83 | /* Globals */ | |
84 | #define TW_DRIVER_VERSION "2.26.02.002" | |
85 | static TW_Device_Extension *twa_device_extension_list[TW_MAX_SLOT]; | |
86 | static unsigned int twa_device_extension_count; | |
87 | static int twa_major = -1; | |
88 | extern struct timezone sys_tz; | |
89 | ||
90 | /* Module parameters */ | |
91 | MODULE_AUTHOR ("AMCC"); | |
92 | MODULE_DESCRIPTION ("3ware 9000 Storage Controller Linux Driver"); | |
93 | MODULE_LICENSE("GPL"); | |
94 | MODULE_VERSION(TW_DRIVER_VERSION); | |
95 | ||
96 | /* Function prototypes */ | |
97 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header); | |
98 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id); | |
99 | static char *twa_aen_severity_lookup(unsigned char severity_code); | |
100 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id); | |
101 | static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg); | |
102 | static int twa_chrdev_open(struct inode *inode, struct file *file); | |
103 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host); | |
104 | static void twa_free_request_id(TW_Device_Extension *tw_dev,int request_id); | |
105 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id); | |
106 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, | |
107 | u32 set_features, unsigned short current_fw_srl, | |
108 | unsigned short current_fw_arch_id, | |
109 | unsigned short current_fw_branch, | |
110 | unsigned short current_fw_build, | |
111 | unsigned short *fw_on_ctlr_srl, | |
112 | unsigned short *fw_on_ctlr_arch_id, | |
113 | unsigned short *fw_on_ctlr_branch, | |
114 | unsigned short *fw_on_ctlr_build, | |
115 | u32 *init_connect_result); | |
116 | static void twa_load_sgl(TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length); | |
117 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds); | |
118 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds); | |
119 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal); | |
120 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset); | |
121 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset); | |
122 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg); | |
123 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id); | |
124 | static char *twa_string_lookup(twa_message_type *table, unsigned int aen_code); | |
125 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id); | |
126 | ||
127 | /* Functions */ | |
128 | ||
129 | /* Show some statistics about the card */ | |
130 | static ssize_t twa_show_stats(struct class_device *class_dev, char *buf) | |
131 | { | |
132 | struct Scsi_Host *host = class_to_shost(class_dev); | |
133 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
134 | unsigned long flags = 0; | |
135 | ssize_t len; | |
136 | ||
137 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
138 | len = snprintf(buf, PAGE_SIZE, "3w-9xxx Driver version: %s\n" | |
139 | "Current commands posted: %4d\n" | |
140 | "Max commands posted: %4d\n" | |
141 | "Current pending commands: %4d\n" | |
142 | "Max pending commands: %4d\n" | |
143 | "Last sgl length: %4d\n" | |
144 | "Max sgl length: %4d\n" | |
145 | "Last sector count: %4d\n" | |
146 | "Max sector count: %4d\n" | |
147 | "SCSI Host Resets: %4d\n" | |
148 | "AEN's: %4d\n", | |
149 | TW_DRIVER_VERSION, | |
150 | tw_dev->posted_request_count, | |
151 | tw_dev->max_posted_request_count, | |
152 | tw_dev->pending_request_count, | |
153 | tw_dev->max_pending_request_count, | |
154 | tw_dev->sgl_entries, | |
155 | tw_dev->max_sgl_entries, | |
156 | tw_dev->sector_count, | |
157 | tw_dev->max_sector_count, | |
158 | tw_dev->num_resets, | |
159 | tw_dev->aen_count); | |
160 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
161 | return len; | |
162 | } /* End twa_show_stats() */ | |
163 | ||
164 | /* This function will set a devices queue depth */ | |
165 | static int twa_change_queue_depth(struct scsi_device *sdev, int queue_depth) | |
166 | { | |
167 | if (queue_depth > TW_Q_LENGTH-2) | |
168 | queue_depth = TW_Q_LENGTH-2; | |
169 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); | |
170 | return queue_depth; | |
171 | } /* End twa_change_queue_depth() */ | |
172 | ||
173 | /* Create sysfs 'stats' entry */ | |
174 | static struct class_device_attribute twa_host_stats_attr = { | |
175 | .attr = { | |
176 | .name = "stats", | |
177 | .mode = S_IRUGO, | |
178 | }, | |
179 | .show = twa_show_stats | |
180 | }; | |
181 | ||
182 | /* Host attributes initializer */ | |
183 | static struct class_device_attribute *twa_host_attrs[] = { | |
184 | &twa_host_stats_attr, | |
185 | NULL, | |
186 | }; | |
187 | ||
188 | /* File operations struct for character device */ | |
189 | static struct file_operations twa_fops = { | |
190 | .owner = THIS_MODULE, | |
191 | .ioctl = twa_chrdev_ioctl, | |
192 | .open = twa_chrdev_open, | |
193 | .release = NULL | |
194 | }; | |
195 | ||
196 | /* This function will complete an aen request from the isr */ | |
197 | static int twa_aen_complete(TW_Device_Extension *tw_dev, int request_id) | |
198 | { | |
199 | TW_Command_Full *full_command_packet; | |
200 | TW_Command *command_packet; | |
201 | TW_Command_Apache_Header *header; | |
202 | unsigned short aen; | |
203 | int retval = 1; | |
204 | ||
205 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
206 | tw_dev->posted_request_count--; | |
207 | aen = header->status_block.error; | |
208 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
209 | command_packet = &full_command_packet->command.oldcommand; | |
210 | ||
211 | /* First check for internal completion of set param for time sync */ | |
212 | if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) { | |
213 | /* Keep reading the queue in case there are more aen's */ | |
214 | if (twa_aen_read_queue(tw_dev, request_id)) | |
215 | goto out2; | |
216 | else { | |
217 | retval = 0; | |
218 | goto out; | |
219 | } | |
220 | } | |
221 | ||
222 | switch (aen) { | |
223 | case TW_AEN_QUEUE_EMPTY: | |
224 | /* Quit reading the queue if this is the last one */ | |
225 | break; | |
226 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
227 | twa_aen_sync_time(tw_dev, request_id); | |
228 | retval = 0; | |
229 | goto out; | |
230 | default: | |
231 | twa_aen_queue_event(tw_dev, header); | |
232 | ||
233 | /* If there are more aen's, keep reading the queue */ | |
234 | if (twa_aen_read_queue(tw_dev, request_id)) | |
235 | goto out2; | |
236 | else { | |
237 | retval = 0; | |
238 | goto out; | |
239 | } | |
240 | } | |
241 | retval = 0; | |
242 | out2: | |
243 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
244 | twa_free_request_id(tw_dev, request_id); | |
245 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
246 | out: | |
247 | return retval; | |
248 | } /* End twa_aen_complete() */ | |
249 | ||
250 | /* This function will drain aen queue */ | |
251 | static int twa_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) | |
252 | { | |
253 | int request_id = 0; | |
254 | char cdb[TW_MAX_CDB_LEN]; | |
255 | TW_SG_Entry sglist[1]; | |
256 | int finished = 0, count = 0; | |
257 | TW_Command_Full *full_command_packet; | |
258 | TW_Command_Apache_Header *header; | |
259 | unsigned short aen; | |
260 | int first_reset = 0, queue = 0, retval = 1; | |
261 | ||
262 | if (no_check_reset) | |
263 | first_reset = 0; | |
264 | else | |
265 | first_reset = 1; | |
266 | ||
267 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
268 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
269 | ||
270 | /* Initialize cdb */ | |
271 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
272 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
273 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
274 | ||
275 | /* Initialize sglist */ | |
276 | memset(&sglist, 0, sizeof(TW_SG_Entry)); | |
277 | sglist[0].length = TW_SECTOR_SIZE; | |
278 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
279 | ||
280 | if (sglist[0].address & TW_ALIGNMENT_9000_SGL) { | |
281 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Found unaligned address during AEN drain"); | |
282 | goto out; | |
283 | } | |
284 | ||
285 | /* Mark internal command */ | |
286 | tw_dev->srb[request_id] = NULL; | |
287 | ||
288 | do { | |
289 | /* Send command to the board */ | |
290 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
291 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Error posting request sense"); | |
292 | goto out; | |
293 | } | |
294 | ||
295 | /* Now poll for completion */ | |
296 | if (twa_poll_response(tw_dev, request_id, 30)) { | |
297 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "No valid response while draining AEN queue"); | |
298 | tw_dev->posted_request_count--; | |
299 | goto out; | |
300 | } | |
301 | ||
302 | tw_dev->posted_request_count--; | |
303 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
304 | aen = header->status_block.error; | |
305 | queue = 0; | |
306 | count++; | |
307 | ||
308 | switch (aen) { | |
309 | case TW_AEN_QUEUE_EMPTY: | |
310 | if (first_reset != 1) | |
311 | goto out; | |
312 | else | |
313 | finished = 1; | |
314 | break; | |
315 | case TW_AEN_SOFT_RESET: | |
316 | if (first_reset == 0) | |
317 | first_reset = 1; | |
318 | else | |
319 | queue = 1; | |
320 | break; | |
321 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
322 | break; | |
323 | default: | |
324 | queue = 1; | |
325 | } | |
326 | ||
327 | /* Now queue an event info */ | |
328 | if (queue) | |
329 | twa_aen_queue_event(tw_dev, header); | |
330 | } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN)); | |
331 | ||
332 | if (count == TW_MAX_AEN_DRAIN) | |
333 | goto out; | |
334 | ||
335 | retval = 0; | |
336 | out: | |
337 | tw_dev->state[request_id] = TW_S_INITIAL; | |
338 | return retval; | |
339 | } /* End twa_aen_drain_queue() */ | |
340 | ||
341 | /* This function will queue an event */ | |
342 | static void twa_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header) | |
343 | { | |
344 | u32 local_time; | |
345 | struct timeval time; | |
346 | TW_Event *event; | |
347 | unsigned short aen; | |
348 | char host[16]; | |
349 | char *error_str; | |
350 | ||
351 | tw_dev->aen_count++; | |
352 | ||
353 | /* Fill out event info */ | |
354 | event = tw_dev->event_queue[tw_dev->error_index]; | |
355 | ||
356 | /* Check for clobber */ | |
357 | host[0] = '\0'; | |
358 | if (tw_dev->host) { | |
359 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | |
360 | if (event->retrieved == TW_AEN_NOT_RETRIEVED) | |
361 | tw_dev->aen_clobber = 1; | |
362 | } | |
363 | ||
364 | aen = header->status_block.error; | |
365 | memset(event, 0, sizeof(TW_Event)); | |
366 | ||
367 | event->severity = TW_SEV_OUT(header->status_block.severity__reserved); | |
368 | do_gettimeofday(&time); | |
369 | local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60)); | |
370 | event->time_stamp_sec = local_time; | |
371 | event->aen_code = aen; | |
372 | event->retrieved = TW_AEN_NOT_RETRIEVED; | |
373 | event->sequence_id = tw_dev->error_sequence_id; | |
374 | tw_dev->error_sequence_id++; | |
375 | ||
376 | /* Check for embedded error string */ | |
377 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]); | |
378 | ||
379 | header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0'; | |
380 | event->parameter_len = strlen(header->err_specific_desc); | |
381 | memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len); | |
382 | if (event->severity != TW_AEN_SEVERITY_DEBUG) | |
383 | printk(KERN_WARNING "3w-9xxx:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n", | |
384 | host, | |
385 | twa_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)), | |
386 | TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, | |
387 | error_str[0] == '\0' ? twa_string_lookup(twa_aen_table, aen) : error_str, | |
388 | header->err_specific_desc); | |
389 | else | |
390 | tw_dev->aen_count--; | |
391 | ||
392 | if ((tw_dev->error_index + 1) == TW_Q_LENGTH) | |
393 | tw_dev->event_queue_wrapped = 1; | |
394 | tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH; | |
395 | } /* End twa_aen_queue_event() */ | |
396 | ||
397 | /* This function will read the aen queue from the isr */ | |
398 | static int twa_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | |
399 | { | |
400 | char cdb[TW_MAX_CDB_LEN]; | |
401 | TW_SG_Entry sglist[1]; | |
402 | TW_Command_Full *full_command_packet; | |
403 | int retval = 1; | |
404 | ||
405 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
406 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
407 | ||
408 | /* Initialize cdb */ | |
409 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
410 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
411 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
412 | ||
413 | /* Initialize sglist */ | |
414 | memset(&sglist, 0, sizeof(TW_SG_Entry)); | |
415 | sglist[0].length = TW_SECTOR_SIZE; | |
416 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
417 | ||
418 | /* Mark internal command */ | |
419 | tw_dev->srb[request_id] = NULL; | |
420 | ||
421 | /* Now post the command packet */ | |
422 | if (twa_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
423 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "Post failed while reading AEN queue"); | |
424 | goto out; | |
425 | } | |
426 | retval = 0; | |
427 | out: | |
428 | return retval; | |
429 | } /* End twa_aen_read_queue() */ | |
430 | ||
431 | /* This function will look up an AEN severity string */ | |
432 | static char *twa_aen_severity_lookup(unsigned char severity_code) | |
433 | { | |
434 | char *retval = NULL; | |
435 | ||
436 | if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) || | |
437 | (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG)) | |
438 | goto out; | |
439 | ||
440 | retval = twa_aen_severity_table[severity_code]; | |
441 | out: | |
442 | return retval; | |
443 | } /* End twa_aen_severity_lookup() */ | |
444 | ||
445 | /* This function will sync firmware time with the host time */ | |
446 | static void twa_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) | |
447 | { | |
448 | u32 schedulertime; | |
449 | struct timeval utc; | |
450 | TW_Command_Full *full_command_packet; | |
451 | TW_Command *command_packet; | |
452 | TW_Param_Apache *param; | |
453 | u32 local_time; | |
454 | ||
455 | /* Fill out the command packet */ | |
456 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
457 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
458 | command_packet = &full_command_packet->command.oldcommand; | |
459 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | |
460 | command_packet->request_id = request_id; | |
461 | command_packet->byte8_offset.param.sgl[0].address = tw_dev->generic_buffer_phys[request_id]; | |
462 | command_packet->byte8_offset.param.sgl[0].length = TW_SECTOR_SIZE; | |
463 | command_packet->size = TW_COMMAND_SIZE; | |
464 | command_packet->byte6_offset.parameter_count = 1; | |
465 | ||
466 | /* Setup the param */ | |
467 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
468 | memset(param, 0, TW_SECTOR_SIZE); | |
469 | param->table_id = TW_TIMEKEEP_TABLE | 0x8000; /* Controller time keep table */ | |
470 | param->parameter_id = 0x3; /* SchedulerTime */ | |
471 | param->parameter_size_bytes = 4; | |
472 | ||
473 | /* Convert system time in UTC to local time seconds since last | |
474 | Sunday 12:00AM */ | |
475 | do_gettimeofday(&utc); | |
476 | local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60)); | |
477 | schedulertime = local_time - (3 * 86400); | |
478 | schedulertime = schedulertime % 604800; | |
479 | ||
480 | memcpy(param->data, &schedulertime, sizeof(u32)); | |
481 | ||
482 | /* Mark internal command */ | |
483 | tw_dev->srb[request_id] = NULL; | |
484 | ||
485 | /* Now post the command */ | |
486 | twa_post_command_packet(tw_dev, request_id, 1); | |
487 | } /* End twa_aen_sync_time() */ | |
488 | ||
489 | /* This function will allocate memory and check if it is correctly aligned */ | |
490 | static int twa_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | |
491 | { | |
492 | int i; | |
493 | dma_addr_t dma_handle; | |
494 | unsigned long *cpu_addr; | |
495 | int retval = 1; | |
496 | ||
497 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); | |
498 | if (!cpu_addr) { | |
499 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed"); | |
500 | goto out; | |
501 | } | |
502 | ||
503 | if ((unsigned long)cpu_addr % (TW_ALIGNMENT_9000)) { | |
504 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x6, "Failed to allocate correctly aligned memory"); | |
505 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); | |
506 | goto out; | |
507 | } | |
508 | ||
509 | memset(cpu_addr, 0, size*TW_Q_LENGTH); | |
510 | ||
511 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
512 | switch(which) { | |
513 | case 0: | |
514 | tw_dev->command_packet_phys[i] = dma_handle+(i*size); | |
515 | tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size)); | |
516 | break; | |
517 | case 1: | |
518 | tw_dev->generic_buffer_phys[i] = dma_handle+(i*size); | |
519 | tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
520 | break; | |
521 | } | |
522 | } | |
523 | retval = 0; | |
524 | out: | |
525 | return retval; | |
526 | } /* End twa_allocate_memory() */ | |
527 | ||
528 | /* This function will check the status register for unexpected bits */ | |
529 | static int twa_check_bits(u32 status_reg_value) | |
530 | { | |
531 | int retval = 1; | |
532 | ||
533 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) | |
534 | goto out; | |
535 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) | |
536 | goto out; | |
537 | ||
538 | retval = 0; | |
539 | out: | |
540 | return retval; | |
541 | } /* End twa_check_bits() */ | |
542 | ||
543 | /* This function will check the srl and decide if we are compatible */ | |
544 | static int twa_check_srl(TW_Device_Extension *tw_dev, int *flashed) | |
545 | { | |
546 | int retval = 1; | |
547 | unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0; | |
548 | unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0; | |
549 | u32 init_connect_result = 0; | |
550 | ||
551 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
552 | TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL, | |
553 | TW_9000_ARCH_ID, TW_CURRENT_DRIVER_BRANCH, | |
554 | TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl, | |
555 | &fw_on_ctlr_arch_id, &fw_on_ctlr_branch, | |
556 | &fw_on_ctlr_build, &init_connect_result)) { | |
557 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "Initconnection failed while checking SRL"); | |
558 | goto out; | |
559 | } | |
560 | ||
561 | tw_dev->working_srl = fw_on_ctlr_srl; | |
562 | tw_dev->working_branch = fw_on_ctlr_branch; | |
563 | tw_dev->working_build = fw_on_ctlr_build; | |
564 | ||
565 | /* Try base mode compatibility */ | |
566 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { | |
567 | if (twa_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
568 | TW_EXTENDED_INIT_CONNECT, | |
569 | TW_BASE_FW_SRL, TW_9000_ARCH_ID, | |
570 | TW_BASE_FW_BRANCH, TW_BASE_FW_BUILD, | |
571 | &fw_on_ctlr_srl, &fw_on_ctlr_arch_id, | |
572 | &fw_on_ctlr_branch, &fw_on_ctlr_build, | |
573 | &init_connect_result)) { | |
574 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Initconnection (base mode) failed while checking SRL"); | |
575 | goto out; | |
576 | } | |
577 | if (!(init_connect_result & TW_CTLR_FW_COMPATIBLE)) { | |
578 | if (TW_CURRENT_DRIVER_SRL > fw_on_ctlr_srl) { | |
579 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x32, "Firmware and driver incompatibility: please upgrade firmware"); | |
580 | } else { | |
581 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x33, "Firmware and driver incompatibility: please upgrade driver"); | |
582 | } | |
583 | goto out; | |
584 | } | |
585 | tw_dev->working_srl = TW_BASE_FW_SRL; | |
586 | tw_dev->working_branch = TW_BASE_FW_BRANCH; | |
587 | tw_dev->working_build = TW_BASE_FW_BUILD; | |
588 | } | |
589 | retval = 0; | |
590 | out: | |
591 | return retval; | |
592 | } /* End twa_check_srl() */ | |
593 | ||
594 | /* This function handles ioctl for the character device */ | |
595 | static int twa_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
596 | { | |
597 | long timeout; | |
598 | unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; | |
599 | dma_addr_t dma_handle; | |
600 | int request_id = 0; | |
601 | unsigned int sequence_id = 0; | |
602 | unsigned char event_index, start_index; | |
603 | TW_Ioctl_Driver_Command driver_command; | |
604 | TW_Ioctl_Buf_Apache *tw_ioctl; | |
605 | TW_Lock *tw_lock; | |
606 | TW_Command_Full *full_command_packet; | |
607 | TW_Compatibility_Info *tw_compat_info; | |
608 | TW_Event *event; | |
609 | struct timeval current_time; | |
610 | u32 current_time_ms; | |
611 | TW_Device_Extension *tw_dev = twa_device_extension_list[iminor(inode)]; | |
612 | int retval = TW_IOCTL_ERROR_OS_EFAULT; | |
613 | void __user *argp = (void __user *)arg; | |
614 | ||
615 | /* Only let one of these through at a time */ | |
616 | if (down_interruptible(&tw_dev->ioctl_sem)) { | |
617 | retval = TW_IOCTL_ERROR_OS_EINTR; | |
618 | goto out; | |
619 | } | |
620 | ||
621 | /* First copy down the driver command */ | |
622 | if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command))) | |
623 | goto out2; | |
624 | ||
625 | /* Check data buffer size */ | |
626 | if (driver_command.buffer_length > TW_MAX_SECTORS * 512) { | |
627 | retval = TW_IOCTL_ERROR_OS_EINVAL; | |
628 | goto out2; | |
629 | } | |
630 | ||
631 | /* Hardware can only do multiple of 512 byte transfers */ | |
632 | data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511; | |
633 | ||
634 | /* Now allocate ioctl buf memory */ | |
635 | 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); | |
636 | if (!cpu_addr) { | |
637 | retval = TW_IOCTL_ERROR_OS_ENOMEM; | |
638 | goto out2; | |
639 | } | |
640 | ||
641 | tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr; | |
642 | ||
643 | /* Now copy down the entire ioctl */ | |
644 | if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1)) | |
645 | goto out3; | |
646 | ||
647 | /* See which ioctl we are doing */ | |
648 | switch (cmd) { | |
649 | case TW_IOCTL_FIRMWARE_PASS_THROUGH: | |
650 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
651 | twa_get_request_id(tw_dev, &request_id); | |
652 | ||
653 | /* Flag internal command */ | |
654 | tw_dev->srb[request_id] = NULL; | |
655 | ||
656 | /* Flag chrdev ioctl */ | |
657 | tw_dev->chrdev_request_id = request_id; | |
658 | ||
659 | full_command_packet = &tw_ioctl->firmware_command; | |
660 | ||
661 | /* Load request id and sglist for both command types */ | |
662 | twa_load_sgl(full_command_packet, request_id, dma_handle, data_buffer_length_adjusted); | |
663 | ||
664 | memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full)); | |
665 | ||
666 | /* Now post the command packet to the controller */ | |
667 | twa_post_command_packet(tw_dev, request_id, 1); | |
668 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
669 | ||
670 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | |
671 | ||
672 | /* Now wait for command to complete */ | |
673 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | |
674 | ||
675 | /* See if we reset while waiting for the ioctl to complete */ | |
676 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) { | |
677 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
678 | retval = TW_IOCTL_ERROR_OS_ERESTARTSYS; | |
679 | goto out3; | |
680 | } | |
681 | ||
682 | /* We timed out, and didn't get an interrupt */ | |
683 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | |
684 | /* Now we need to reset the board */ | |
685 | printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n", | |
686 | tw_dev->host->host_no, TW_DRIVER, 0xc, | |
687 | cmd); | |
688 | retval = TW_IOCTL_ERROR_OS_EIO; | |
689 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
690 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
691 | twa_free_request_id(tw_dev, request_id); | |
692 | tw_dev->posted_request_count--; | |
693 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
694 | twa_reset_device_extension(tw_dev, 1); | |
695 | goto out3; | |
696 | } | |
697 | ||
698 | /* Now copy in the command packet response */ | |
699 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full)); | |
700 | ||
701 | /* Now complete the io */ | |
702 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
703 | tw_dev->posted_request_count--; | |
704 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
705 | twa_free_request_id(tw_dev, request_id); | |
706 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
707 | break; | |
708 | case TW_IOCTL_GET_COMPATIBILITY_INFO: | |
709 | tw_ioctl->driver_command.status = 0; | |
710 | /* Copy compatiblity struct into ioctl data buffer */ | |
711 | tw_compat_info = (TW_Compatibility_Info *)tw_ioctl->data_buffer; | |
712 | strncpy(tw_compat_info->driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION)); | |
713 | tw_compat_info->working_srl = tw_dev->working_srl; | |
714 | tw_compat_info->working_branch = tw_dev->working_branch; | |
715 | tw_compat_info->working_build = tw_dev->working_build; | |
716 | tw_compat_info->driver_srl_high = TW_CURRENT_DRIVER_SRL; | |
717 | tw_compat_info->driver_branch_high = TW_CURRENT_DRIVER_BRANCH; | |
718 | tw_compat_info->driver_build_high = TW_CURRENT_DRIVER_BUILD; | |
719 | tw_compat_info->driver_srl_low = TW_BASE_FW_SRL; | |
720 | tw_compat_info->driver_branch_low = TW_BASE_FW_BRANCH; | |
721 | tw_compat_info->driver_build_low = TW_BASE_FW_BUILD; | |
722 | break; | |
723 | case TW_IOCTL_GET_LAST_EVENT: | |
724 | if (tw_dev->event_queue_wrapped) { | |
725 | if (tw_dev->aen_clobber) { | |
726 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
727 | tw_dev->aen_clobber = 0; | |
728 | } else | |
729 | tw_ioctl->driver_command.status = 0; | |
730 | } else { | |
731 | if (!tw_dev->error_index) { | |
732 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
733 | break; | |
734 | } | |
735 | tw_ioctl->driver_command.status = 0; | |
736 | } | |
737 | event_index = (tw_dev->error_index - 1 + TW_Q_LENGTH) % TW_Q_LENGTH; | |
738 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
739 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
740 | break; | |
741 | case TW_IOCTL_GET_FIRST_EVENT: | |
742 | if (tw_dev->event_queue_wrapped) { | |
743 | if (tw_dev->aen_clobber) { | |
744 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
745 | tw_dev->aen_clobber = 0; | |
746 | } else | |
747 | tw_ioctl->driver_command.status = 0; | |
748 | event_index = tw_dev->error_index; | |
749 | } else { | |
750 | if (!tw_dev->error_index) { | |
751 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
752 | break; | |
753 | } | |
754 | tw_ioctl->driver_command.status = 0; | |
755 | event_index = 0; | |
756 | } | |
757 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
758 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
759 | break; | |
760 | case TW_IOCTL_GET_NEXT_EVENT: | |
761 | event = (TW_Event *)tw_ioctl->data_buffer; | |
762 | sequence_id = event->sequence_id; | |
763 | tw_ioctl->driver_command.status = 0; | |
764 | ||
765 | if (tw_dev->event_queue_wrapped) { | |
766 | if (tw_dev->aen_clobber) { | |
767 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
768 | tw_dev->aen_clobber = 0; | |
769 | } | |
770 | start_index = tw_dev->error_index; | |
771 | } else { | |
772 | if (!tw_dev->error_index) { | |
773 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
774 | break; | |
775 | } | |
776 | start_index = 0; | |
777 | } | |
778 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id + 1) % TW_Q_LENGTH; | |
779 | ||
780 | if (!(tw_dev->event_queue[event_index]->sequence_id > sequence_id)) { | |
781 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) | |
782 | tw_dev->aen_clobber = 1; | |
783 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
784 | break; | |
785 | } | |
786 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
787 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
788 | break; | |
789 | case TW_IOCTL_GET_PREVIOUS_EVENT: | |
790 | event = (TW_Event *)tw_ioctl->data_buffer; | |
791 | sequence_id = event->sequence_id; | |
792 | tw_ioctl->driver_command.status = 0; | |
793 | ||
794 | if (tw_dev->event_queue_wrapped) { | |
795 | if (tw_dev->aen_clobber) { | |
796 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_AEN_CLOBBER; | |
797 | tw_dev->aen_clobber = 0; | |
798 | } | |
799 | start_index = tw_dev->error_index; | |
800 | } else { | |
801 | if (!tw_dev->error_index) { | |
802 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
803 | break; | |
804 | } | |
805 | start_index = 0; | |
806 | } | |
807 | event_index = (start_index + sequence_id - tw_dev->event_queue[start_index]->sequence_id - 1) % TW_Q_LENGTH; | |
808 | ||
809 | if (!(tw_dev->event_queue[event_index]->sequence_id < sequence_id)) { | |
810 | if (tw_ioctl->driver_command.status == TW_IOCTL_ERROR_STATUS_AEN_CLOBBER) | |
811 | tw_dev->aen_clobber = 1; | |
812 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NO_MORE_EVENTS; | |
813 | break; | |
814 | } | |
815 | memcpy(tw_ioctl->data_buffer, tw_dev->event_queue[event_index], sizeof(TW_Event)); | |
816 | tw_dev->event_queue[event_index]->retrieved = TW_AEN_RETRIEVED; | |
817 | break; | |
818 | case TW_IOCTL_GET_LOCK: | |
819 | tw_lock = (TW_Lock *)tw_ioctl->data_buffer; | |
820 | do_gettimeofday(¤t_time); | |
821 | current_time_ms = (current_time.tv_sec * 1000) + (current_time.tv_usec / 1000); | |
822 | ||
823 | if ((tw_lock->force_flag == 1) || (tw_dev->ioctl_sem_lock == 0) || (current_time_ms >= tw_dev->ioctl_msec)) { | |
824 | tw_dev->ioctl_sem_lock = 1; | |
825 | tw_dev->ioctl_msec = current_time_ms + tw_lock->timeout_msec; | |
826 | tw_ioctl->driver_command.status = 0; | |
827 | tw_lock->time_remaining_msec = tw_lock->timeout_msec; | |
828 | } else { | |
829 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_LOCKED; | |
830 | tw_lock->time_remaining_msec = tw_dev->ioctl_msec - current_time_ms; | |
831 | } | |
832 | break; | |
833 | case TW_IOCTL_RELEASE_LOCK: | |
834 | if (tw_dev->ioctl_sem_lock == 1) { | |
835 | tw_dev->ioctl_sem_lock = 0; | |
836 | tw_ioctl->driver_command.status = 0; | |
837 | } else { | |
838 | tw_ioctl->driver_command.status = TW_IOCTL_ERROR_STATUS_NOT_LOCKED; | |
839 | } | |
840 | break; | |
841 | default: | |
842 | retval = TW_IOCTL_ERROR_OS_ENOTTY; | |
843 | goto out3; | |
844 | } | |
845 | ||
846 | /* Now copy the entire response to userspace */ | |
847 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0) | |
848 | retval = 0; | |
849 | out3: | |
850 | /* Now free ioctl buf memory */ | |
851 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle); | |
852 | out2: | |
853 | up(&tw_dev->ioctl_sem); | |
854 | out: | |
855 | return retval; | |
856 | } /* End twa_chrdev_ioctl() */ | |
857 | ||
858 | /* This function handles open for the character device */ | |
859 | static int twa_chrdev_open(struct inode *inode, struct file *file) | |
860 | { | |
861 | unsigned int minor_number; | |
862 | int retval = TW_IOCTL_ERROR_OS_ENODEV; | |
863 | ||
864 | minor_number = iminor(inode); | |
865 | if (minor_number >= twa_device_extension_count) | |
866 | goto out; | |
867 | retval = 0; | |
868 | out: | |
869 | return retval; | |
870 | } /* End twa_chrdev_open() */ | |
871 | ||
872 | /* This function will print readable messages from status register errors */ | |
873 | static int twa_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value) | |
874 | { | |
875 | int retval = 1; | |
876 | ||
877 | /* Check for various error conditions and handle them appropriately */ | |
878 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { | |
879 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "PCI Parity Error: clearing"); | |
880 | writel(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
881 | } | |
882 | ||
883 | if (status_reg_value & TW_STATUS_PCI_ABORT) { | |
884 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "PCI Abort: clearing"); | |
885 | writel(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); | |
886 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); | |
887 | } | |
888 | ||
889 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { | |
890 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Controller Queue Error: clearing"); | |
891 | writel(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
892 | } | |
893 | ||
894 | if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) { | |
895 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xf, "SBUF Write Error: clearing"); | |
896 | writel(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
897 | } | |
898 | ||
899 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { | |
900 | if (tw_dev->reset_print == 0) { | |
901 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Microcontroller Error: clearing"); | |
902 | tw_dev->reset_print = 1; | |
903 | } | |
904 | goto out; | |
905 | } | |
906 | retval = 0; | |
907 | out: | |
908 | return retval; | |
909 | } /* End twa_decode_bits() */ | |
910 | ||
911 | /* This function will empty the response queue */ | |
912 | static int twa_empty_response_queue(TW_Device_Extension *tw_dev) | |
913 | { | |
914 | u32 status_reg_value, response_que_value; | |
915 | int count = 0, retval = 1; | |
916 | ||
917 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
918 | ||
919 | while (((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) && (count < TW_MAX_RESPONSE_DRAIN)) { | |
920 | response_que_value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
921 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
922 | count++; | |
923 | } | |
924 | if (count == TW_MAX_RESPONSE_DRAIN) | |
925 | goto out; | |
926 | ||
927 | retval = 0; | |
928 | out: | |
929 | return retval; | |
930 | } /* End twa_empty_response_queue() */ | |
931 | ||
932 | /* This function passes sense keys from firmware to scsi layer */ | |
933 | static int twa_fill_sense(TW_Device_Extension *tw_dev, int request_id, int copy_sense, int print_host) | |
934 | { | |
935 | TW_Command_Full *full_command_packet; | |
936 | unsigned short error; | |
937 | int retval = 1; | |
938 | char *error_str; | |
939 | ||
940 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
941 | ||
942 | /* Check for embedded error string */ | |
943 | error_str = &(full_command_packet->header.err_specific_desc[strlen(full_command_packet->header.err_specific_desc) + 1]); | |
944 | ||
945 | /* Don't print error for Logical unit not supported during rollcall */ | |
946 | error = full_command_packet->header.status_block.error; | |
947 | if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE)) { | |
948 | if (print_host) | |
949 | printk(KERN_WARNING "3w-9xxx: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
950 | tw_dev->host->host_no, | |
951 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
952 | full_command_packet->header.status_block.error, | |
953 | error_str[0] == '\0' ? | |
954 | twa_string_lookup(twa_error_table, | |
955 | full_command_packet->header.status_block.error) : error_str, | |
956 | full_command_packet->header.err_specific_desc); | |
957 | else | |
958 | printk(KERN_WARNING "3w-9xxx: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
959 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
960 | full_command_packet->header.status_block.error, | |
961 | error_str[0] == '\0' ? | |
962 | twa_string_lookup(twa_error_table, | |
963 | full_command_packet->header.status_block.error) : error_str, | |
964 | full_command_packet->header.err_specific_desc); | |
965 | } | |
966 | ||
967 | if (copy_sense) { | |
968 | memcpy(tw_dev->srb[request_id]->sense_buffer, full_command_packet->header.sense_data, TW_SENSE_DATA_LENGTH); | |
969 | tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1); | |
970 | retval = TW_ISR_DONT_RESULT; | |
971 | goto out; | |
972 | } | |
973 | retval = 0; | |
974 | out: | |
975 | return retval; | |
976 | } /* End twa_fill_sense() */ | |
977 | ||
978 | /* This function will free up device extension resources */ | |
979 | static void twa_free_device_extension(TW_Device_Extension *tw_dev) | |
980 | { | |
981 | if (tw_dev->command_packet_virt[0]) | |
982 | pci_free_consistent(tw_dev->tw_pci_dev, | |
983 | sizeof(TW_Command_Full)*TW_Q_LENGTH, | |
984 | tw_dev->command_packet_virt[0], | |
985 | tw_dev->command_packet_phys[0]); | |
986 | ||
987 | if (tw_dev->generic_buffer_virt[0]) | |
988 | pci_free_consistent(tw_dev->tw_pci_dev, | |
989 | TW_SECTOR_SIZE*TW_Q_LENGTH, | |
990 | tw_dev->generic_buffer_virt[0], | |
991 | tw_dev->generic_buffer_phys[0]); | |
992 | ||
993 | if (tw_dev->event_queue[0]) | |
994 | kfree(tw_dev->event_queue[0]); | |
995 | } /* End twa_free_device_extension() */ | |
996 | ||
997 | /* This function will free a request id */ | |
998 | static void twa_free_request_id(TW_Device_Extension *tw_dev, int request_id) | |
999 | { | |
1000 | tw_dev->free_queue[tw_dev->free_tail] = request_id; | |
1001 | tw_dev->state[request_id] = TW_S_FINISHED; | |
1002 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; | |
1003 | } /* End twa_free_request_id() */ | |
1004 | ||
1005 | /* This function will get parameter table entires from the firmware */ | |
1006 | static void *twa_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes) | |
1007 | { | |
1008 | TW_Command_Full *full_command_packet; | |
1009 | TW_Command *command_packet; | |
1010 | TW_Param_Apache *param; | |
1011 | unsigned long param_value; | |
1012 | void *retval = NULL; | |
1013 | ||
1014 | /* Setup the command packet */ | |
1015 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1016 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
1017 | command_packet = &full_command_packet->command.oldcommand; | |
1018 | ||
1019 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1020 | command_packet->size = TW_COMMAND_SIZE; | |
1021 | command_packet->request_id = request_id; | |
1022 | command_packet->byte6_offset.block_count = 1; | |
1023 | ||
1024 | /* Now setup the param */ | |
1025 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
1026 | memset(param, 0, TW_SECTOR_SIZE); | |
1027 | param->table_id = table_id | 0x8000; | |
1028 | param->parameter_id = parameter_id; | |
1029 | param->parameter_size_bytes = parameter_size_bytes; | |
1030 | param_value = tw_dev->generic_buffer_phys[request_id]; | |
1031 | ||
1032 | command_packet->byte8_offset.param.sgl[0].address = param_value; | |
1033 | command_packet->byte8_offset.param.sgl[0].length = TW_SECTOR_SIZE; | |
1034 | ||
1035 | /* Post the command packet to the board */ | |
1036 | twa_post_command_packet(tw_dev, request_id, 1); | |
1037 | ||
1038 | /* Poll for completion */ | |
1039 | if (twa_poll_response(tw_dev, request_id, 30)) | |
1040 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "No valid response during get param") | |
1041 | else | |
1042 | retval = (void *)&(param->data[0]); | |
1043 | ||
1044 | tw_dev->posted_request_count--; | |
1045 | tw_dev->state[request_id] = TW_S_INITIAL; | |
1046 | ||
1047 | return retval; | |
1048 | } /* End twa_get_param() */ | |
1049 | ||
1050 | /* This function will assign an available request id */ | |
1051 | static void twa_get_request_id(TW_Device_Extension *tw_dev, int *request_id) | |
1052 | { | |
1053 | *request_id = tw_dev->free_queue[tw_dev->free_head]; | |
1054 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; | |
1055 | tw_dev->state[*request_id] = TW_S_STARTED; | |
1056 | } /* End twa_get_request_id() */ | |
1057 | ||
1058 | /* This function will send an initconnection command to controller */ | |
1059 | static int twa_initconnection(TW_Device_Extension *tw_dev, int message_credits, | |
1060 | u32 set_features, unsigned short current_fw_srl, | |
1061 | unsigned short current_fw_arch_id, | |
1062 | unsigned short current_fw_branch, | |
1063 | unsigned short current_fw_build, | |
1064 | unsigned short *fw_on_ctlr_srl, | |
1065 | unsigned short *fw_on_ctlr_arch_id, | |
1066 | unsigned short *fw_on_ctlr_branch, | |
1067 | unsigned short *fw_on_ctlr_build, | |
1068 | u32 *init_connect_result) | |
1069 | { | |
1070 | TW_Command_Full *full_command_packet; | |
1071 | TW_Initconnect *tw_initconnect; | |
1072 | int request_id = 0, retval = 1; | |
1073 | ||
1074 | /* Initialize InitConnection command packet */ | |
1075 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1076 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
1077 | full_command_packet->header.header_desc.size_header = 128; | |
1078 | ||
1079 | tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand; | |
1080 | tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION); | |
1081 | tw_initconnect->request_id = request_id; | |
1082 | tw_initconnect->message_credits = message_credits; | |
1083 | tw_initconnect->features = set_features; | |
1084 | ||
1085 | /* Turn on 64-bit sgl support if we need to */ | |
1086 | tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0; | |
1087 | ||
1088 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | |
1089 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED; | |
1090 | tw_initconnect->fw_srl = current_fw_srl; | |
1091 | tw_initconnect->fw_arch_id = current_fw_arch_id; | |
1092 | tw_initconnect->fw_branch = current_fw_branch; | |
1093 | tw_initconnect->fw_build = current_fw_build; | |
1094 | } else | |
1095 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE; | |
1096 | ||
1097 | /* Send command packet to the board */ | |
1098 | twa_post_command_packet(tw_dev, request_id, 1); | |
1099 | ||
1100 | /* Poll for completion */ | |
1101 | if (twa_poll_response(tw_dev, request_id, 30)) { | |
1102 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "No valid response during init connection"); | |
1103 | } else { | |
1104 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | |
1105 | *fw_on_ctlr_srl = tw_initconnect->fw_srl; | |
1106 | *fw_on_ctlr_arch_id = tw_initconnect->fw_arch_id; | |
1107 | *fw_on_ctlr_branch = tw_initconnect->fw_branch; | |
1108 | *fw_on_ctlr_build = tw_initconnect->fw_build; | |
1109 | *init_connect_result = tw_initconnect->result; | |
1110 | } | |
1111 | retval = 0; | |
1112 | } | |
1113 | ||
1114 | tw_dev->posted_request_count--; | |
1115 | tw_dev->state[request_id] = TW_S_INITIAL; | |
1116 | ||
1117 | return retval; | |
1118 | } /* End twa_initconnection() */ | |
1119 | ||
1120 | /* This function will initialize the fields of a device extension */ | |
1121 | static int twa_initialize_device_extension(TW_Device_Extension *tw_dev) | |
1122 | { | |
1123 | int i, retval = 1; | |
1124 | ||
1125 | /* Initialize command packet buffers */ | |
1126 | if (twa_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) { | |
1127 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Command packet memory allocation failed"); | |
1128 | goto out; | |
1129 | } | |
1130 | ||
1131 | /* Initialize generic buffer */ | |
1132 | if (twa_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) { | |
1133 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x17, "Generic memory allocation failed"); | |
1134 | goto out; | |
1135 | } | |
1136 | ||
1137 | /* Allocate event info space */ | |
1138 | tw_dev->event_queue[0] = kmalloc(sizeof(TW_Event) * TW_Q_LENGTH, GFP_KERNEL); | |
1139 | if (!tw_dev->event_queue[0]) { | |
1140 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x18, "Event info memory allocation failed"); | |
1141 | goto out; | |
1142 | } | |
1143 | ||
1144 | memset(tw_dev->event_queue[0], 0, sizeof(TW_Event) * TW_Q_LENGTH); | |
1145 | ||
1146 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1147 | tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event))); | |
1148 | tw_dev->free_queue[i] = i; | |
1149 | tw_dev->state[i] = TW_S_INITIAL; | |
1150 | } | |
1151 | ||
1152 | tw_dev->pending_head = TW_Q_START; | |
1153 | tw_dev->pending_tail = TW_Q_START; | |
1154 | tw_dev->free_head = TW_Q_START; | |
1155 | tw_dev->free_tail = TW_Q_START; | |
1156 | tw_dev->error_sequence_id = 1; | |
1157 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1158 | ||
1159 | init_MUTEX(&tw_dev->ioctl_sem); | |
1160 | init_waitqueue_head(&tw_dev->ioctl_wqueue); | |
1161 | ||
1162 | retval = 0; | |
1163 | out: | |
1164 | return retval; | |
1165 | } /* End twa_initialize_device_extension() */ | |
1166 | ||
1167 | /* This function is the interrupt service routine */ | |
1168 | static irqreturn_t twa_interrupt(int irq, void *dev_instance, struct pt_regs *regs) | |
1169 | { | |
1170 | int request_id, error = 0; | |
1171 | u32 status_reg_value; | |
1172 | TW_Response_Queue response_que; | |
1173 | TW_Command_Full *full_command_packet; | |
1174 | TW_Command *command_packet; | |
1175 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; | |
1176 | int handled = 0; | |
1177 | ||
1178 | /* Get the per adapter lock */ | |
1179 | spin_lock(tw_dev->host->host_lock); | |
1180 | ||
1181 | /* Read the registers */ | |
1182 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1183 | ||
1184 | /* Check if this is our interrupt, otherwise bail */ | |
1185 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) | |
1186 | goto twa_interrupt_bail; | |
1187 | ||
1188 | handled = 1; | |
1189 | ||
1190 | /* Check controller for errors */ | |
1191 | if (twa_check_bits(status_reg_value)) { | |
1192 | if (twa_decode_bits(tw_dev, status_reg_value)) { | |
1193 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1194 | goto twa_interrupt_bail; | |
1195 | } | |
1196 | } | |
1197 | ||
1198 | /* Handle host interrupt */ | |
1199 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) | |
1200 | TW_CLEAR_HOST_INTERRUPT(tw_dev); | |
1201 | ||
1202 | /* Handle attention interrupt */ | |
1203 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { | |
1204 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
1205 | if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) { | |
1206 | twa_get_request_id(tw_dev, &request_id); | |
1207 | ||
1208 | error = twa_aen_read_queue(tw_dev, request_id); | |
1209 | if (error) { | |
1210 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1211 | twa_free_request_id(tw_dev, request_id); | |
1212 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
1213 | } | |
1214 | } | |
1215 | } | |
1216 | ||
1217 | /* Handle command interrupt */ | |
1218 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { | |
1219 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1220 | /* Drain as many pending commands as we can */ | |
1221 | while (tw_dev->pending_request_count > 0) { | |
1222 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; | |
1223 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
1224 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x19, "Found request id that wasn't pending"); | |
1225 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1226 | goto twa_interrupt_bail; | |
1227 | } | |
1228 | if (twa_post_command_packet(tw_dev, request_id, 1)==0) { | |
1229 | tw_dev->pending_head = (tw_dev->pending_head + 1) % TW_Q_LENGTH; | |
1230 | tw_dev->pending_request_count--; | |
1231 | } else { | |
1232 | /* If we get here, we will continue re-posting on the next command interrupt */ | |
1233 | break; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | ||
1238 | /* Handle response interrupt */ | |
1239 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { | |
1240 | ||
1241 | /* Drain the response queue from the board */ | |
1242 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
1243 | /* Complete the response */ | |
1244 | response_que.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1245 | request_id = TW_RESID_OUT(response_que.response_id); | |
1246 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1247 | error = 0; | |
1248 | command_packet = &full_command_packet->command.oldcommand; | |
1249 | /* Check for command packet errors */ | |
1250 | if (full_command_packet->command.newcommand.status != 0) { | |
1251 | if (tw_dev->srb[request_id] != 0) { | |
1252 | error = twa_fill_sense(tw_dev, request_id, 1, 1); | |
1253 | } else { | |
1254 | /* Skip ioctl error prints */ | |
1255 | if (request_id != tw_dev->chrdev_request_id) { | |
1256 | error = twa_fill_sense(tw_dev, request_id, 0, 1); | |
1257 | } | |
1258 | } | |
1259 | } | |
1260 | ||
1261 | /* Check for correct state */ | |
1262 | if (tw_dev->state[request_id] != TW_S_POSTED) { | |
1263 | if (tw_dev->srb[request_id] != 0) { | |
1264 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Received a request id that wasn't posted"); | |
1265 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1266 | goto twa_interrupt_bail; | |
1267 | } | |
1268 | } | |
1269 | ||
1270 | /* Check for internal command completion */ | |
1271 | if (tw_dev->srb[request_id] == 0) { | |
1272 | if (request_id != tw_dev->chrdev_request_id) { | |
1273 | if (twa_aen_complete(tw_dev, request_id)) | |
1274 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Error completing AEN during attention interrupt"); | |
1275 | } else { | |
1276 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1277 | wake_up(&tw_dev->ioctl_wqueue); | |
1278 | } | |
1279 | } else { | |
1280 | twa_scsiop_execute_scsi_complete(tw_dev, request_id); | |
1281 | /* If no error command was a success */ | |
1282 | if (error == 0) { | |
1283 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
1284 | } | |
1285 | ||
1286 | /* If error, command failed */ | |
1287 | if (error == 1) { | |
1288 | /* Ask for a host reset */ | |
1289 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); | |
1290 | } | |
1291 | ||
1292 | /* Report residual bytes for single sgl */ | |
1293 | if ((tw_dev->srb[request_id]->use_sg <= 1) && (full_command_packet->command.newcommand.status == 0)) { | |
1294 | if (full_command_packet->command.newcommand.sg_list[0].length < tw_dev->srb[request_id]->request_bufflen) | |
1295 | tw_dev->srb[request_id]->resid = tw_dev->srb[request_id]->request_bufflen - full_command_packet->command.newcommand.sg_list[0].length; | |
1296 | } | |
1297 | ||
1298 | /* Now complete the io */ | |
1299 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1300 | twa_free_request_id(tw_dev, request_id); | |
1301 | tw_dev->posted_request_count--; | |
1302 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1303 | twa_unmap_scsi_data(tw_dev, request_id); | |
1304 | } | |
1305 | ||
1306 | /* Check for valid status after each drain */ | |
1307 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1308 | if (twa_check_bits(status_reg_value)) { | |
1309 | if (twa_decode_bits(tw_dev, status_reg_value)) { | |
1310 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1311 | goto twa_interrupt_bail; | |
1312 | } | |
1313 | } | |
1314 | } | |
1315 | } | |
1316 | ||
1317 | twa_interrupt_bail: | |
1318 | spin_unlock(tw_dev->host->host_lock); | |
1319 | return IRQ_RETVAL(handled); | |
1320 | } /* End twa_interrupt() */ | |
1321 | ||
1322 | /* This function will load the request id and various sgls for ioctls */ | |
1323 | static void twa_load_sgl(TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length) | |
1324 | { | |
1325 | TW_Command *oldcommand; | |
1326 | TW_Command_Apache *newcommand; | |
1327 | TW_SG_Entry *sgl; | |
1328 | ||
1329 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
1330 | newcommand = &full_command_packet->command.newcommand; | |
1331 | newcommand->request_id__lunl = | |
1332 | TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id); | |
1333 | newcommand->sg_list[0].address = dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1; | |
1334 | newcommand->sg_list[0].length = length; | |
1335 | newcommand->sgl_entries__lunh = | |
1336 | TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), 1); | |
1337 | } else { | |
1338 | oldcommand = &full_command_packet->command.oldcommand; | |
1339 | oldcommand->request_id = request_id; | |
1340 | ||
1341 | if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) { | |
1342 | /* Load the sg list */ | |
1343 | sgl = (TW_SG_Entry *)((u32 *)oldcommand+TW_SGL_OUT(oldcommand->opcode__sgloffset)); | |
1344 | sgl->address = dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1; | |
1345 | sgl->length = length; | |
1346 | ||
1347 | if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4)) | |
1348 | oldcommand->size += 1; | |
1349 | } | |
1350 | } | |
1351 | } /* End twa_load_sgl() */ | |
1352 | ||
1353 | /* This function will perform a pci-dma mapping for a scatter gather list */ | |
1354 | static int twa_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id) | |
1355 | { | |
1356 | int use_sg; | |
1357 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1358 | struct pci_dev *pdev = tw_dev->tw_pci_dev; | |
1359 | int retval = 0; | |
1360 | ||
1361 | if (cmd->use_sg == 0) | |
1362 | goto out; | |
1363 | ||
1364 | use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, DMA_BIDIRECTIONAL); | |
1365 | ||
1366 | if (use_sg == 0) { | |
1367 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to map scatter gather list"); | |
1368 | goto out; | |
1369 | } | |
1370 | ||
1371 | cmd->SCp.phase = TW_PHASE_SGLIST; | |
1372 | cmd->SCp.have_data_in = use_sg; | |
1373 | retval = use_sg; | |
1374 | out: | |
1375 | return retval; | |
1376 | } /* End twa_map_scsi_sg_data() */ | |
1377 | ||
1378 | /* This function will perform a pci-dma map for a single buffer */ | |
1379 | static dma_addr_t twa_map_scsi_single_data(TW_Device_Extension *tw_dev, int request_id) | |
1380 | { | |
1381 | dma_addr_t mapping; | |
1382 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1383 | struct pci_dev *pdev = tw_dev->tw_pci_dev; | |
1384 | int retval = 0; | |
1385 | ||
1386 | if (cmd->request_bufflen == 0) { | |
1387 | retval = 0; | |
1388 | goto out; | |
1389 | } | |
1390 | ||
1391 | mapping = pci_map_single(pdev, cmd->request_buffer, cmd->request_bufflen, DMA_BIDIRECTIONAL); | |
1392 | ||
1393 | if (mapping == 0) { | |
1394 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Failed to map page"); | |
1395 | goto out; | |
1396 | } | |
1397 | ||
1398 | cmd->SCp.phase = TW_PHASE_SINGLE; | |
1399 | cmd->SCp.have_data_in = mapping; | |
1400 | retval = mapping; | |
1401 | out: | |
1402 | return retval; | |
1403 | } /* End twa_map_scsi_single_data() */ | |
1404 | ||
1405 | /* This function will poll for a response interrupt of a request */ | |
1406 | static int twa_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) | |
1407 | { | |
1408 | int retval = 1, found = 0, response_request_id; | |
1409 | TW_Response_Queue response_queue; | |
1410 | TW_Command_Full *full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1411 | ||
1412 | if (twa_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds) == 0) { | |
1413 | response_queue.value = readl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1414 | response_request_id = TW_RESID_OUT(response_queue.response_id); | |
1415 | if (request_id != response_request_id) { | |
1416 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "Found unexpected request id while polling for response"); | |
1417 | goto out; | |
1418 | } | |
1419 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
1420 | if (full_command_packet->command.newcommand.status != 0) { | |
1421 | /* bad response */ | |
1422 | twa_fill_sense(tw_dev, request_id, 0, 0); | |
1423 | goto out; | |
1424 | } | |
1425 | found = 1; | |
1426 | } else { | |
1427 | if (full_command_packet->command.oldcommand.status != 0) { | |
1428 | /* bad response */ | |
1429 | twa_fill_sense(tw_dev, request_id, 0, 0); | |
1430 | goto out; | |
1431 | } | |
1432 | found = 1; | |
1433 | } | |
1434 | } | |
1435 | ||
1436 | if (found) | |
1437 | retval = 0; | |
1438 | out: | |
1439 | return retval; | |
1440 | } /* End twa_poll_response() */ | |
1441 | ||
1442 | /* This function will poll the status register for a flag */ | |
1443 | static int twa_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
1444 | { | |
1445 | u32 status_reg_value; | |
1446 | unsigned long before; | |
1447 | int retval = 1; | |
1448 | ||
1449 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1450 | before = jiffies; | |
1451 | ||
1452 | if (twa_check_bits(status_reg_value)) | |
1453 | twa_decode_bits(tw_dev, status_reg_value); | |
1454 | ||
1455 | while ((status_reg_value & flag) != flag) { | |
1456 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1457 | ||
1458 | if (twa_check_bits(status_reg_value)) | |
1459 | twa_decode_bits(tw_dev, status_reg_value); | |
1460 | ||
1461 | if (time_after(jiffies, before + HZ * seconds)) | |
1462 | goto out; | |
1463 | ||
1464 | msleep(50); | |
1465 | } | |
1466 | retval = 0; | |
1467 | out: | |
1468 | return retval; | |
1469 | } /* End twa_poll_status() */ | |
1470 | ||
1471 | /* This function will poll the status register for disappearance of a flag */ | |
1472 | static int twa_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
1473 | { | |
1474 | u32 status_reg_value; | |
1475 | unsigned long before; | |
1476 | int retval = 1; | |
1477 | ||
1478 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1479 | before = jiffies; | |
1480 | ||
1481 | if (twa_check_bits(status_reg_value)) | |
1482 | twa_decode_bits(tw_dev, status_reg_value); | |
1483 | ||
1484 | while ((status_reg_value & flag) != 0) { | |
1485 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1486 | if (twa_check_bits(status_reg_value)) | |
1487 | twa_decode_bits(tw_dev, status_reg_value); | |
1488 | ||
1489 | if (time_after(jiffies, before + HZ * seconds)) | |
1490 | goto out; | |
1491 | ||
1492 | msleep(50); | |
1493 | } | |
1494 | retval = 0; | |
1495 | out: | |
1496 | return retval; | |
1497 | } /* End twa_poll_status_gone() */ | |
1498 | ||
1499 | /* This function will attempt to post a command packet to the board */ | |
1500 | static int twa_post_command_packet(TW_Device_Extension *tw_dev, int request_id, char internal) | |
1501 | { | |
1502 | u32 status_reg_value; | |
1503 | dma_addr_t command_que_value; | |
1504 | int retval = 1; | |
1505 | ||
1506 | command_que_value = tw_dev->command_packet_phys[request_id]; | |
1507 | status_reg_value = readl(TW_STATUS_REG_ADDR(tw_dev)); | |
1508 | ||
1509 | if (twa_check_bits(status_reg_value)) | |
1510 | twa_decode_bits(tw_dev, status_reg_value); | |
1511 | ||
1512 | if (((tw_dev->pending_request_count > 0) && (tw_dev->state[request_id] != TW_S_PENDING)) || (status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL)) { | |
1513 | ||
1514 | /* Only pend internal driver commands */ | |
1515 | if (!internal) { | |
1516 | retval = SCSI_MLQUEUE_HOST_BUSY; | |
1517 | goto out; | |
1518 | } | |
1519 | ||
1520 | /* Couldn't post the command packet, so we do it later */ | |
1521 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
1522 | tw_dev->state[request_id] = TW_S_PENDING; | |
1523 | tw_dev->pending_request_count++; | |
1524 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { | |
1525 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; | |
1526 | } | |
1527 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; | |
1528 | tw_dev->pending_tail = (tw_dev->pending_tail + 1) % TW_Q_LENGTH; | |
1529 | } | |
1530 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); | |
1531 | goto out; | |
1532 | } else { | |
1533 | /* We successfully posted the command packet */ | |
1534 | if (sizeof(dma_addr_t) > 4) { | |
1535 | command_que_value += TW_COMMAND_OFFSET; | |
1536 | writel((u32)command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1537 | writel((u32)((u64)command_que_value >> 32), TW_COMMAND_QUEUE_REG_ADDR(tw_dev) + 0x4); | |
1538 | } else { | |
1539 | writel(TW_COMMAND_OFFSET + command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1540 | } | |
1541 | tw_dev->state[request_id] = TW_S_POSTED; | |
1542 | tw_dev->posted_request_count++; | |
1543 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { | |
1544 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | |
1545 | } | |
1546 | } | |
1547 | retval = 0; | |
1548 | out: | |
1549 | return retval; | |
1550 | } /* End twa_post_command_packet() */ | |
1551 | ||
1552 | /* This function will reset a device extension */ | |
1553 | static int twa_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset) | |
1554 | { | |
1555 | int i = 0; | |
1556 | int retval = 1; | |
1557 | unsigned long flags = 0; | |
1558 | ||
1559 | set_bit(TW_IN_RESET, &tw_dev->flags); | |
1560 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1561 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1562 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1563 | ||
1564 | /* Abort all requests that are in progress */ | |
1565 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1566 | if ((tw_dev->state[i] != TW_S_FINISHED) && | |
1567 | (tw_dev->state[i] != TW_S_INITIAL) && | |
1568 | (tw_dev->state[i] != TW_S_COMPLETED)) { | |
1569 | if (tw_dev->srb[i]) { | |
1570 | tw_dev->srb[i]->result = (DID_RESET << 16); | |
1571 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); | |
1572 | twa_unmap_scsi_data(tw_dev, i); | |
1573 | } | |
1574 | } | |
1575 | } | |
1576 | ||
1577 | /* Reset queues and counts */ | |
1578 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1579 | tw_dev->free_queue[i] = i; | |
1580 | tw_dev->state[i] = TW_S_INITIAL; | |
1581 | } | |
1582 | tw_dev->free_head = TW_Q_START; | |
1583 | tw_dev->free_tail = TW_Q_START; | |
1584 | tw_dev->posted_request_count = 0; | |
1585 | tw_dev->pending_request_count = 0; | |
1586 | tw_dev->pending_head = TW_Q_START; | |
1587 | tw_dev->pending_tail = TW_Q_START; | |
1588 | tw_dev->reset_print = 0; | |
1589 | ||
1590 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1591 | ||
1592 | if (twa_reset_sequence(tw_dev, 1)) | |
1593 | goto out; | |
1594 | ||
1595 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
1596 | ||
1597 | /* Wake up any ioctl that was pending before the reset */ | |
1598 | if ((tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE) || (ioctl_reset)) { | |
1599 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
1600 | } else { | |
1601 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1602 | wake_up(&tw_dev->ioctl_wqueue); | |
1603 | } | |
1604 | retval = 0; | |
1605 | out: | |
1606 | return retval; | |
1607 | } /* End twa_reset_device_extension() */ | |
1608 | ||
1609 | /* This function will reset a controller */ | |
1610 | static int twa_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset) | |
1611 | { | |
1612 | int tries = 0, retval = 1, flashed = 0, do_soft_reset = soft_reset; | |
1613 | ||
1614 | while (tries < TW_MAX_RESET_TRIES) { | |
1615 | if (do_soft_reset) | |
1616 | TW_SOFT_RESET(tw_dev); | |
1617 | ||
1618 | /* Make sure controller is in a good state */ | |
1619 | if (twa_poll_status(tw_dev, TW_STATUS_MICROCONTROLLER_READY | (do_soft_reset == 1 ? TW_STATUS_ATTENTION_INTERRUPT : 0), 60)) { | |
1620 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Microcontroller not ready during reset sequence"); | |
1621 | do_soft_reset = 1; | |
1622 | tries++; | |
1623 | continue; | |
1624 | } | |
1625 | ||
1626 | /* Empty response queue */ | |
1627 | if (twa_empty_response_queue(tw_dev)) { | |
1628 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Response queue empty failed during reset sequence"); | |
1629 | do_soft_reset = 1; | |
1630 | tries++; | |
1631 | continue; | |
1632 | } | |
1633 | ||
1634 | flashed = 0; | |
1635 | ||
1636 | /* Check for compatibility/flash */ | |
1637 | if (twa_check_srl(tw_dev, &flashed)) { | |
1638 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Compatibility check failed during reset sequence"); | |
1639 | do_soft_reset = 1; | |
1640 | tries++; | |
1641 | continue; | |
1642 | } else { | |
1643 | if (flashed) { | |
1644 | tries++; | |
1645 | continue; | |
1646 | } | |
1647 | } | |
1648 | ||
1649 | /* Drain the AEN queue */ | |
1650 | if (twa_aen_drain_queue(tw_dev, soft_reset)) { | |
1651 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x22, "AEN drain failed during reset sequence"); | |
1652 | do_soft_reset = 1; | |
1653 | tries++; | |
1654 | continue; | |
1655 | } | |
1656 | ||
1657 | /* If we got here, controller is in a good state */ | |
1658 | retval = 0; | |
1659 | goto out; | |
1660 | } | |
1661 | out: | |
1662 | return retval; | |
1663 | } /* End twa_reset_sequence() */ | |
1664 | ||
1665 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | |
1666 | static int twa_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) | |
1667 | { | |
1668 | int heads, sectors, cylinders; | |
1669 | TW_Device_Extension *tw_dev; | |
1670 | ||
1671 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | |
1672 | ||
1673 | if (capacity >= 0x200000) { | |
1674 | heads = 255; | |
1675 | sectors = 63; | |
1676 | cylinders = sector_div(capacity, heads * sectors); | |
1677 | } else { | |
1678 | heads = 64; | |
1679 | sectors = 32; | |
1680 | cylinders = sector_div(capacity, heads * sectors); | |
1681 | } | |
1682 | ||
1683 | geom[0] = heads; | |
1684 | geom[1] = sectors; | |
1685 | geom[2] = cylinders; | |
1686 | ||
1687 | return 0; | |
1688 | } /* End twa_scsi_biosparam() */ | |
1689 | ||
1690 | /* This is the new scsi eh reset function */ | |
1691 | static int twa_scsi_eh_reset(struct scsi_cmnd *SCpnt) | |
1692 | { | |
1693 | TW_Device_Extension *tw_dev = NULL; | |
1694 | int retval = FAILED; | |
1695 | ||
1696 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1697 | ||
1698 | spin_unlock_irq(tw_dev->host->host_lock); | |
1699 | ||
1700 | tw_dev->num_resets++; | |
1701 | ||
1702 | printk(KERN_WARNING "3w-9xxx: scsi%d: WARNING: (0x%02X:0x%04X): Unit #%d: Command (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, TW_DRIVER, 0x2c, SCpnt->device->id, SCpnt->cmnd[0]); | |
1703 | ||
1704 | /* Now reset the card and some of the device extension data */ | |
1705 | if (twa_reset_device_extension(tw_dev, 0)) { | |
1706 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2b, "Controller reset failed during scsi host reset"); | |
1707 | goto out; | |
1708 | } | |
1709 | ||
1710 | retval = SUCCESS; | |
1711 | out: | |
1712 | spin_lock_irq(tw_dev->host->host_lock); | |
1713 | return retval; | |
1714 | } /* End twa_scsi_eh_reset() */ | |
1715 | ||
1716 | /* This is the main scsi queue function to handle scsi opcodes */ | |
1717 | static int twa_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) | |
1718 | { | |
1719 | int request_id, retval; | |
1720 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1721 | ||
1722 | /* Check if this FW supports luns */ | |
1723 | if ((SCpnt->device->lun != 0) && (tw_dev->working_srl < TW_FW_SRL_LUNS_SUPPORTED)) { | |
1724 | SCpnt->result = (DID_BAD_TARGET << 16); | |
1725 | done(SCpnt); | |
1726 | retval = 0; | |
1727 | goto out; | |
1728 | } | |
1729 | ||
1730 | /* Save done function into scsi_cmnd struct */ | |
1731 | SCpnt->scsi_done = done; | |
1732 | ||
1733 | /* Get a free request id */ | |
1734 | twa_get_request_id(tw_dev, &request_id); | |
1735 | ||
1736 | /* Save the scsi command for use by the ISR */ | |
1737 | tw_dev->srb[request_id] = SCpnt; | |
1738 | ||
1739 | /* Initialize phase to zero */ | |
1740 | SCpnt->SCp.phase = TW_PHASE_INITIAL; | |
1741 | ||
1742 | retval = twa_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); | |
1743 | switch (retval) { | |
1744 | case SCSI_MLQUEUE_HOST_BUSY: | |
1745 | twa_free_request_id(tw_dev, request_id); | |
1746 | break; | |
1747 | case 1: | |
1748 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1749 | twa_free_request_id(tw_dev, request_id); | |
1750 | SCpnt->result = (DID_ERROR << 16); | |
1751 | done(SCpnt); | |
1752 | retval = 0; | |
1753 | } | |
1754 | out: | |
1755 | return retval; | |
1756 | } /* End twa_scsi_queue() */ | |
1757 | ||
1758 | /* This function hands scsi cdb's to the firmware */ | |
1759 | static int twa_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry *sglistarg) | |
1760 | { | |
1761 | TW_Command_Full *full_command_packet; | |
1762 | TW_Command_Apache *command_packet; | |
1763 | u32 num_sectors = 0x0; | |
1764 | int i, sg_count; | |
1765 | struct scsi_cmnd *srb = NULL; | |
1766 | struct scatterlist *sglist = NULL; | |
1767 | u32 buffaddr = 0x0; | |
1768 | int retval = 1; | |
1769 | ||
1770 | if (tw_dev->srb[request_id]) { | |
1771 | if (tw_dev->srb[request_id]->request_buffer) { | |
1772 | sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; | |
1773 | } | |
1774 | srb = tw_dev->srb[request_id]; | |
1775 | } | |
1776 | ||
1777 | /* Initialize command packet */ | |
1778 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1779 | full_command_packet->header.header_desc.size_header = 128; | |
1780 | full_command_packet->header.status_block.error = 0; | |
1781 | full_command_packet->header.status_block.severity__reserved = 0; | |
1782 | ||
1783 | command_packet = &full_command_packet->command.newcommand; | |
1784 | command_packet->status = 0; | |
1785 | command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI); | |
1786 | ||
1787 | /* We forced 16 byte cdb use earlier */ | |
1788 | if (!cdb) | |
1789 | memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN); | |
1790 | else | |
1791 | memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN); | |
1792 | ||
1793 | if (srb) { | |
1794 | command_packet->unit = srb->device->id; | |
1795 | command_packet->request_id__lunl = | |
1796 | TW_REQ_LUN_IN(srb->device->lun, request_id); | |
1797 | } else { | |
1798 | command_packet->request_id__lunl = | |
1799 | TW_REQ_LUN_IN(0, request_id); | |
1800 | command_packet->unit = 0; | |
1801 | } | |
1802 | ||
1803 | command_packet->sgl_offset = 16; | |
1804 | ||
1805 | if (!sglistarg) { | |
1806 | /* Map sglist from scsi layer to cmd packet */ | |
1807 | if (tw_dev->srb[request_id]->use_sg == 0) { | |
1808 | if (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH) { | |
1809 | command_packet->sg_list[0].address = tw_dev->generic_buffer_phys[request_id]; | |
1810 | command_packet->sg_list[0].length = TW_MIN_SGL_LENGTH; | |
1811 | } else { | |
1812 | buffaddr = twa_map_scsi_single_data(tw_dev, request_id); | |
1813 | if (buffaddr == 0) | |
1814 | goto out; | |
1815 | ||
1816 | command_packet->sg_list[0].address = buffaddr; | |
1817 | command_packet->sg_list[0].length = tw_dev->srb[request_id]->request_bufflen; | |
1818 | } | |
1819 | command_packet->sgl_entries__lunh = TW_REQ_LUN_IN((srb->device->lun >> 4), 1); | |
1820 | ||
1821 | if (command_packet->sg_list[0].address & TW_ALIGNMENT_9000_SGL) { | |
1822 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2d, "Found unaligned address during execute scsi"); | |
1823 | goto out; | |
1824 | } | |
1825 | } | |
1826 | ||
1827 | if (tw_dev->srb[request_id]->use_sg > 0) { | |
1828 | if ((tw_dev->srb[request_id]->use_sg == 1) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) { | |
1829 | command_packet->sg_list[0].address = tw_dev->generic_buffer_phys[request_id]; | |
1830 | command_packet->sg_list[0].length = TW_MIN_SGL_LENGTH; | |
1831 | } else { | |
1832 | sg_count = twa_map_scsi_sg_data(tw_dev, request_id); | |
1833 | if (sg_count == 0) | |
1834 | goto out; | |
1835 | ||
1836 | for (i = 0; i < sg_count; i++) { | |
1837 | command_packet->sg_list[i].address = sg_dma_address(&sglist[i]); | |
1838 | command_packet->sg_list[i].length = sg_dma_len(&sglist[i]); | |
1839 | if (command_packet->sg_list[i].address & TW_ALIGNMENT_9000_SGL) { | |
1840 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2e, "Found unaligned sgl address during execute scsi"); | |
1841 | goto out; | |
1842 | } | |
1843 | } | |
1844 | } | |
1845 | command_packet->sgl_entries__lunh = TW_REQ_LUN_IN((srb->device->lun >> 4), tw_dev->srb[request_id]->use_sg); | |
1846 | } | |
1847 | } else { | |
1848 | /* Internal cdb post */ | |
1849 | for (i = 0; i < use_sg; i++) { | |
1850 | command_packet->sg_list[i].address = sglistarg[i].address; | |
1851 | command_packet->sg_list[i].length = sglistarg[i].length; | |
1852 | if (command_packet->sg_list[i].address & TW_ALIGNMENT_9000_SGL) { | |
1853 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2f, "Found unaligned sgl address during internal post"); | |
1854 | goto out; | |
1855 | } | |
1856 | } | |
1857 | command_packet->sgl_entries__lunh = TW_REQ_LUN_IN(0, use_sg); | |
1858 | } | |
1859 | ||
1860 | if (srb) { | |
1861 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) | |
1862 | num_sectors = (u32)srb->cmnd[4]; | |
1863 | ||
1864 | if (srb->cmnd[0] == READ_10 || srb->cmnd[0] == WRITE_10) | |
1865 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); | |
1866 | } | |
1867 | ||
1868 | /* Update sector statistic */ | |
1869 | tw_dev->sector_count = num_sectors; | |
1870 | if (tw_dev->sector_count > tw_dev->max_sector_count) | |
1871 | tw_dev->max_sector_count = tw_dev->sector_count; | |
1872 | ||
1873 | /* Update SG statistics */ | |
1874 | if (srb) { | |
1875 | tw_dev->sgl_entries = tw_dev->srb[request_id]->use_sg; | |
1876 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) | |
1877 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | |
1878 | } | |
1879 | ||
1880 | /* Now post the command to the board */ | |
1881 | if (srb) { | |
1882 | retval = twa_post_command_packet(tw_dev, request_id, 0); | |
1883 | } else { | |
1884 | twa_post_command_packet(tw_dev, request_id, 1); | |
1885 | retval = 0; | |
1886 | } | |
1887 | out: | |
1888 | return retval; | |
1889 | } /* End twa_scsiop_execute_scsi() */ | |
1890 | ||
1891 | /* This function completes an execute scsi operation */ | |
1892 | static void twa_scsiop_execute_scsi_complete(TW_Device_Extension *tw_dev, int request_id) | |
1893 | { | |
1894 | /* Copy the response if too small */ | |
1895 | if ((tw_dev->srb[request_id]->request_buffer) && (tw_dev->srb[request_id]->request_bufflen < TW_MIN_SGL_LENGTH)) { | |
1896 | memcpy(tw_dev->srb[request_id]->request_buffer, | |
1897 | tw_dev->generic_buffer_virt[request_id], | |
1898 | tw_dev->srb[request_id]->request_bufflen); | |
1899 | } | |
1900 | } /* End twa_scsiop_execute_scsi_complete() */ | |
1901 | ||
1902 | /* This function tells the controller to shut down */ | |
1903 | static void __twa_shutdown(TW_Device_Extension *tw_dev) | |
1904 | { | |
1905 | /* Disable interrupts */ | |
1906 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1907 | ||
1908 | printk(KERN_WARNING "3w-9xxx: Shutting down host %d.\n", tw_dev->host->host_no); | |
1909 | ||
1910 | /* Tell the card we are shutting down */ | |
1911 | if (twa_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | |
1912 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x31, "Connection shutdown failed"); | |
1913 | } else { | |
1914 | printk(KERN_WARNING "3w-9xxx: Shutdown complete.\n"); | |
1915 | } | |
1916 | ||
1917 | /* Clear all interrupts just before exit */ | |
1918 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
1919 | } /* End __twa_shutdown() */ | |
1920 | ||
1921 | /* Wrapper for __twa_shutdown */ | |
1922 | static void twa_shutdown(struct device *dev) | |
1923 | { | |
1924 | struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev)); | |
1925 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
1926 | ||
1927 | __twa_shutdown(tw_dev); | |
1928 | } /* End twa_shutdown() */ | |
1929 | ||
1930 | /* This function will look up a string */ | |
1931 | static char *twa_string_lookup(twa_message_type *table, unsigned int code) | |
1932 | { | |
1933 | int index; | |
1934 | ||
1935 | for (index = 0; ((code != table[index].code) && | |
1936 | (table[index].text != (char *)0)); index++); | |
1937 | return(table[index].text); | |
1938 | } /* End twa_string_lookup() */ | |
1939 | ||
1940 | /* This function will perform a pci-dma unmap */ | |
1941 | static void twa_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) | |
1942 | { | |
1943 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
1944 | struct pci_dev *pdev = tw_dev->tw_pci_dev; | |
1945 | ||
1946 | switch(cmd->SCp.phase) { | |
1947 | case TW_PHASE_SINGLE: | |
1948 | pci_unmap_single(pdev, cmd->SCp.have_data_in, cmd->request_bufflen, DMA_BIDIRECTIONAL); | |
1949 | break; | |
1950 | case TW_PHASE_SGLIST: | |
1951 | pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL); | |
1952 | break; | |
1953 | } | |
1954 | } /* End twa_unmap_scsi_data() */ | |
1955 | ||
1956 | /* scsi_host_template initializer */ | |
1957 | static struct scsi_host_template driver_template = { | |
1958 | .module = THIS_MODULE, | |
1959 | .name = "3ware 9000 Storage Controller", | |
1960 | .queuecommand = twa_scsi_queue, | |
1961 | .eh_host_reset_handler = twa_scsi_eh_reset, | |
1962 | .bios_param = twa_scsi_biosparam, | |
1963 | .change_queue_depth = twa_change_queue_depth, | |
1964 | .can_queue = TW_Q_LENGTH-2, | |
1965 | .this_id = -1, | |
1966 | .sg_tablesize = TW_APACHE_MAX_SGL_LENGTH, | |
1967 | .max_sectors = TW_MAX_SECTORS, | |
1968 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | |
1969 | .use_clustering = ENABLE_CLUSTERING, | |
1970 | .shost_attrs = twa_host_attrs, | |
1971 | .emulated = 1 | |
1972 | }; | |
1973 | ||
1974 | /* This function will probe and initialize a card */ | |
1975 | static int __devinit twa_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) | |
1976 | { | |
1977 | struct Scsi_Host *host = NULL; | |
1978 | TW_Device_Extension *tw_dev; | |
1979 | u32 mem_addr; | |
1980 | int retval = -ENODEV; | |
1981 | ||
1982 | retval = pci_enable_device(pdev); | |
1983 | if (retval) { | |
1984 | TW_PRINTK(host, TW_DRIVER, 0x34, "Failed to enable pci device"); | |
1985 | goto out_disable_device; | |
1986 | } | |
1987 | ||
1988 | pci_set_master(pdev); | |
1989 | ||
1990 | retval = pci_set_dma_mask(pdev, sizeof(dma_addr_t) > 4 ? DMA_64BIT_MASK : DMA_32BIT_MASK); | |
1991 | if (retval) { | |
1992 | TW_PRINTK(host, TW_DRIVER, 0x23, "Failed to set dma mask"); | |
1993 | goto out_disable_device; | |
1994 | } | |
1995 | ||
1996 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | |
1997 | if (!host) { | |
1998 | TW_PRINTK(host, TW_DRIVER, 0x24, "Failed to allocate memory for device extension"); | |
1999 | retval = -ENOMEM; | |
2000 | goto out_disable_device; | |
2001 | } | |
2002 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
2003 | ||
2004 | memset(tw_dev, 0, sizeof(TW_Device_Extension)); | |
2005 | ||
2006 | /* Save values to device extension */ | |
2007 | tw_dev->host = host; | |
2008 | tw_dev->tw_pci_dev = pdev; | |
2009 | ||
2010 | if (twa_initialize_device_extension(tw_dev)) { | |
2011 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x25, "Failed to initialize device extension"); | |
2012 | goto out_free_device_extension; | |
2013 | } | |
2014 | ||
2015 | /* Request IO regions */ | |
2016 | retval = pci_request_regions(pdev, "3w-9xxx"); | |
2017 | if (retval) { | |
2018 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Failed to get mem region"); | |
2019 | goto out_free_device_extension; | |
2020 | } | |
2021 | ||
2022 | mem_addr = pci_resource_start(pdev, 1); | |
2023 | ||
2024 | /* Save base address */ | |
2025 | tw_dev->base_addr = ioremap(mem_addr, PAGE_SIZE); | |
2026 | if (!tw_dev->base_addr) { | |
2027 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x35, "Failed to ioremap"); | |
2028 | goto out_release_mem_region; | |
2029 | } | |
2030 | ||
2031 | /* Disable interrupts on the card */ | |
2032 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2033 | ||
2034 | /* Initialize the card */ | |
2035 | if (twa_reset_sequence(tw_dev, 0)) | |
2036 | goto out_release_mem_region; | |
2037 | ||
2038 | /* Set host specific parameters */ | |
2039 | host->max_id = TW_MAX_UNITS; | |
2040 | host->max_cmd_len = TW_MAX_CDB_LEN; | |
2041 | ||
2042 | /* Channels aren't supported by adapter */ | |
2043 | host->max_lun = TW_MAX_LUNS(tw_dev->working_srl); | |
2044 | host->max_channel = 0; | |
2045 | ||
2046 | /* Register the card with the kernel SCSI layer */ | |
2047 | retval = scsi_add_host(host, &pdev->dev); | |
2048 | if (retval) { | |
2049 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x27, "scsi add host failed"); | |
2050 | goto out_release_mem_region; | |
2051 | } | |
2052 | ||
2053 | pci_set_drvdata(pdev, host); | |
2054 | ||
2055 | printk(KERN_WARNING "3w-9xxx: scsi%d: Found a 3ware 9000 Storage Controller at 0x%x, IRQ: %d.\n", | |
2056 | host->host_no, mem_addr, pdev->irq); | |
2057 | printk(KERN_WARNING "3w-9xxx: scsi%d: Firmware %s, BIOS %s, Ports: %d.\n", | |
2058 | host->host_no, | |
2059 | (char *)twa_get_param(tw_dev, 0, TW_VERSION_TABLE, | |
2060 | TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH), | |
2061 | (char *)twa_get_param(tw_dev, 1, TW_VERSION_TABLE, | |
2062 | TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH), | |
2063 | *(int *)twa_get_param(tw_dev, 2, TW_INFORMATION_TABLE, | |
2064 | TW_PARAM_PORTCOUNT, TW_PARAM_PORTCOUNT_LENGTH)); | |
2065 | ||
2066 | /* Now setup the interrupt handler */ | |
2067 | retval = request_irq(pdev->irq, twa_interrupt, SA_SHIRQ, "3w-9xxx", tw_dev); | |
2068 | if (retval) { | |
2069 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x30, "Error requesting IRQ"); | |
2070 | goto out_remove_host; | |
2071 | } | |
2072 | ||
2073 | twa_device_extension_list[twa_device_extension_count] = tw_dev; | |
2074 | twa_device_extension_count++; | |
2075 | ||
2076 | /* Re-enable interrupts on the card */ | |
2077 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2078 | ||
2079 | /* Finally, scan the host */ | |
2080 | scsi_scan_host(host); | |
2081 | ||
2082 | if (twa_major == -1) { | |
2083 | if ((twa_major = register_chrdev (0, "twa", &twa_fops)) < 0) | |
2084 | TW_PRINTK(host, TW_DRIVER, 0x29, "Failed to register character device"); | |
2085 | } | |
2086 | return 0; | |
2087 | ||
2088 | out_remove_host: | |
2089 | scsi_remove_host(host); | |
2090 | out_release_mem_region: | |
2091 | pci_release_regions(pdev); | |
2092 | out_free_device_extension: | |
2093 | twa_free_device_extension(tw_dev); | |
2094 | scsi_host_put(host); | |
2095 | out_disable_device: | |
2096 | pci_disable_device(pdev); | |
2097 | ||
2098 | return retval; | |
2099 | } /* End twa_probe() */ | |
2100 | ||
2101 | /* This function is called to remove a device */ | |
2102 | static void twa_remove(struct pci_dev *pdev) | |
2103 | { | |
2104 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2105 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2106 | ||
2107 | scsi_remove_host(tw_dev->host); | |
2108 | ||
2109 | /* Unregister character device */ | |
2110 | if (twa_major >= 0) { | |
2111 | unregister_chrdev(twa_major, "twa"); | |
2112 | twa_major = -1; | |
2113 | } | |
2114 | ||
2115 | /* Free up the IRQ */ | |
2116 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
2117 | ||
2118 | /* Shutdown the card */ | |
2119 | __twa_shutdown(tw_dev); | |
2120 | ||
2121 | /* Free up the mem region */ | |
2122 | pci_release_regions(pdev); | |
2123 | ||
2124 | /* Free up device extension resources */ | |
2125 | twa_free_device_extension(tw_dev); | |
2126 | ||
2127 | scsi_host_put(tw_dev->host); | |
2128 | pci_disable_device(pdev); | |
2129 | twa_device_extension_count--; | |
2130 | } /* End twa_remove() */ | |
2131 | ||
2132 | /* PCI Devices supported by this driver */ | |
2133 | static struct pci_device_id twa_pci_tbl[] __devinitdata = { | |
2134 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_9000, | |
2135 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
2136 | { } | |
2137 | }; | |
2138 | MODULE_DEVICE_TABLE(pci, twa_pci_tbl); | |
2139 | ||
2140 | /* pci_driver initializer */ | |
2141 | static struct pci_driver twa_driver = { | |
2142 | .name = "3w-9xxx", | |
2143 | .id_table = twa_pci_tbl, | |
2144 | .probe = twa_probe, | |
2145 | .remove = twa_remove, | |
2146 | .driver = { | |
2147 | .shutdown = twa_shutdown | |
2148 | } | |
2149 | }; | |
2150 | ||
2151 | /* This function is called on driver initialization */ | |
2152 | static int __init twa_init(void) | |
2153 | { | |
2154 | printk(KERN_WARNING "3ware 9000 Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | |
2155 | ||
2156 | return pci_module_init(&twa_driver); | |
2157 | } /* End twa_init() */ | |
2158 | ||
2159 | /* This function is called on driver exit */ | |
2160 | static void __exit twa_exit(void) | |
2161 | { | |
2162 | pci_unregister_driver(&twa_driver); | |
2163 | } /* End twa_exit() */ | |
2164 | ||
2165 | module_init(twa_init); | |
2166 | module_exit(twa_exit); | |
2167 |