]>
Commit | Line | Data |
---|---|---|
f619106b AR |
1 | /* |
2 | 3w-sas.c -- LSI 3ware SAS/SATA-RAID Controller device driver for Linux. | |
3 | ||
2c9bce5b | 4 | Written By: Adam Radford <aradford@gmail.com> |
f619106b AR |
5 | |
6 | Copyright (C) 2009 LSI 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 | Controllers supported by this driver: | |
42 | ||
43 | LSI 3ware 9750 6Gb/s SAS/SATA-RAID | |
44 | ||
45 | Bugs/Comments/Suggestions should be mailed to: | |
2c9bce5b | 46 | aradford@gmail.com |
f619106b AR |
47 | |
48 | History | |
49 | ------- | |
50 | 3.26.02.000 - Initial driver release. | |
51 | */ | |
52 | ||
53 | #include <linux/module.h> | |
54 | #include <linux/reboot.h> | |
55 | #include <linux/spinlock.h> | |
56 | #include <linux/interrupt.h> | |
57 | #include <linux/moduleparam.h> | |
58 | #include <linux/errno.h> | |
59 | #include <linux/types.h> | |
60 | #include <linux/delay.h> | |
61 | #include <linux/pci.h> | |
62 | #include <linux/time.h> | |
63 | #include <linux/mutex.h> | |
5a0e3ad6 | 64 | #include <linux/slab.h> |
f619106b AR |
65 | #include <asm/io.h> |
66 | #include <asm/irq.h> | |
7c0f6ba6 | 67 | #include <linux/uaccess.h> |
f619106b AR |
68 | #include <scsi/scsi.h> |
69 | #include <scsi/scsi_host.h> | |
70 | #include <scsi/scsi_tcq.h> | |
71 | #include <scsi/scsi_cmnd.h> | |
72 | #include "3w-sas.h" | |
73 | ||
74 | /* Globals */ | |
75 | #define TW_DRIVER_VERSION "3.26.02.000" | |
c45d15d2 | 76 | static DEFINE_MUTEX(twl_chrdev_mutex); |
f619106b AR |
77 | static TW_Device_Extension *twl_device_extension_list[TW_MAX_SLOT]; |
78 | static unsigned int twl_device_extension_count; | |
79 | static int twl_major = -1; | |
80 | extern struct timezone sys_tz; | |
81 | ||
82 | /* Module parameters */ | |
83 | MODULE_AUTHOR ("LSI"); | |
84 | MODULE_DESCRIPTION ("LSI 3ware SAS/SATA-RAID Linux Driver"); | |
85 | MODULE_LICENSE("GPL"); | |
86 | MODULE_VERSION(TW_DRIVER_VERSION); | |
87 | ||
88 | static int use_msi; | |
89 | module_param(use_msi, int, S_IRUGO); | |
90 | MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0"); | |
91 | ||
92 | /* Function prototypes */ | |
93 | static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset); | |
94 | ||
95 | /* Functions */ | |
96 | ||
97 | /* This function returns AENs through sysfs */ | |
2c3c8bea | 98 | static ssize_t twl_sysfs_aen_read(struct file *filp, struct kobject *kobj, |
f619106b AR |
99 | struct bin_attribute *bin_attr, |
100 | char *outbuf, loff_t offset, size_t count) | |
101 | { | |
102 | struct device *dev = container_of(kobj, struct device, kobj); | |
103 | struct Scsi_Host *shost = class_to_shost(dev); | |
104 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata; | |
105 | unsigned long flags = 0; | |
106 | ssize_t ret; | |
107 | ||
108 | if (!capable(CAP_SYS_ADMIN)) | |
109 | return -EACCES; | |
110 | ||
111 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
112 | ret = memory_read_from_buffer(outbuf, count, &offset, tw_dev->event_queue[0], sizeof(TW_Event) * TW_Q_LENGTH); | |
113 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
114 | ||
115 | return ret; | |
116 | } /* End twl_sysfs_aen_read() */ | |
117 | ||
118 | /* aen_read sysfs attribute initializer */ | |
119 | static struct bin_attribute twl_sysfs_aen_read_attr = { | |
120 | .attr = { | |
121 | .name = "3ware_aen_read", | |
122 | .mode = S_IRUSR, | |
123 | }, | |
124 | .size = 0, | |
125 | .read = twl_sysfs_aen_read | |
126 | }; | |
127 | ||
128 | /* This function returns driver compatibility info through sysfs */ | |
2c3c8bea | 129 | static ssize_t twl_sysfs_compat_info(struct file *filp, struct kobject *kobj, |
f619106b AR |
130 | struct bin_attribute *bin_attr, |
131 | char *outbuf, loff_t offset, size_t count) | |
132 | { | |
133 | struct device *dev = container_of(kobj, struct device, kobj); | |
134 | struct Scsi_Host *shost = class_to_shost(dev); | |
135 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata; | |
136 | unsigned long flags = 0; | |
137 | ssize_t ret; | |
138 | ||
139 | if (!capable(CAP_SYS_ADMIN)) | |
140 | return -EACCES; | |
141 | ||
142 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
143 | ret = memory_read_from_buffer(outbuf, count, &offset, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info)); | |
144 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
145 | ||
146 | return ret; | |
147 | } /* End twl_sysfs_compat_info() */ | |
148 | ||
149 | /* compat_info sysfs attribute initializer */ | |
150 | static struct bin_attribute twl_sysfs_compat_info_attr = { | |
151 | .attr = { | |
152 | .name = "3ware_compat_info", | |
153 | .mode = S_IRUSR, | |
154 | }, | |
155 | .size = 0, | |
156 | .read = twl_sysfs_compat_info | |
157 | }; | |
158 | ||
159 | /* Show some statistics about the card */ | |
160 | static ssize_t twl_show_stats(struct device *dev, | |
161 | struct device_attribute *attr, char *buf) | |
162 | { | |
163 | struct Scsi_Host *host = class_to_shost(dev); | |
164 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
165 | unsigned long flags = 0; | |
166 | ssize_t len; | |
167 | ||
168 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
169 | len = snprintf(buf, PAGE_SIZE, "3w-sas Driver version: %s\n" | |
170 | "Current commands posted: %4d\n" | |
171 | "Max commands posted: %4d\n" | |
172 | "Last sgl length: %4d\n" | |
173 | "Max sgl length: %4d\n" | |
174 | "Last sector count: %4d\n" | |
175 | "Max sector count: %4d\n" | |
176 | "SCSI Host Resets: %4d\n" | |
177 | "AEN's: %4d\n", | |
178 | TW_DRIVER_VERSION, | |
179 | tw_dev->posted_request_count, | |
180 | tw_dev->max_posted_request_count, | |
181 | tw_dev->sgl_entries, | |
182 | tw_dev->max_sgl_entries, | |
183 | tw_dev->sector_count, | |
184 | tw_dev->max_sector_count, | |
185 | tw_dev->num_resets, | |
186 | tw_dev->aen_count); | |
187 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
188 | return len; | |
189 | } /* End twl_show_stats() */ | |
190 | ||
f619106b AR |
191 | /* stats sysfs attribute initializer */ |
192 | static struct device_attribute twl_host_stats_attr = { | |
193 | .attr = { | |
194 | .name = "3ware_stats", | |
195 | .mode = S_IRUGO, | |
196 | }, | |
197 | .show = twl_show_stats | |
198 | }; | |
199 | ||
200 | /* Host attributes initializer */ | |
201 | static struct device_attribute *twl_host_attrs[] = { | |
202 | &twl_host_stats_attr, | |
203 | NULL, | |
204 | }; | |
205 | ||
206 | /* This function will look up an AEN severity string */ | |
207 | static char *twl_aen_severity_lookup(unsigned char severity_code) | |
208 | { | |
209 | char *retval = NULL; | |
210 | ||
211 | if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) || | |
212 | (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG)) | |
213 | goto out; | |
214 | ||
215 | retval = twl_aen_severity_table[severity_code]; | |
216 | out: | |
217 | return retval; | |
218 | } /* End twl_aen_severity_lookup() */ | |
219 | ||
220 | /* This function will queue an event */ | |
221 | static void twl_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header) | |
222 | { | |
223 | u32 local_time; | |
f619106b AR |
224 | TW_Event *event; |
225 | unsigned short aen; | |
226 | char host[16]; | |
227 | char *error_str; | |
228 | ||
229 | tw_dev->aen_count++; | |
230 | ||
231 | /* Fill out event info */ | |
232 | event = tw_dev->event_queue[tw_dev->error_index]; | |
233 | ||
234 | host[0] = '\0'; | |
235 | if (tw_dev->host) | |
236 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | |
237 | ||
238 | aen = le16_to_cpu(header->status_block.error); | |
239 | memset(event, 0, sizeof(TW_Event)); | |
240 | ||
241 | event->severity = TW_SEV_OUT(header->status_block.severity__reserved); | |
9c88673f AB |
242 | /* event->time_stamp_sec overflows in y2106 */ |
243 | local_time = (u32)(ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60)); | |
f619106b AR |
244 | event->time_stamp_sec = local_time; |
245 | event->aen_code = aen; | |
246 | event->retrieved = TW_AEN_NOT_RETRIEVED; | |
247 | event->sequence_id = tw_dev->error_sequence_id; | |
248 | tw_dev->error_sequence_id++; | |
249 | ||
250 | /* Check for embedded error string */ | |
251 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]); | |
252 | ||
253 | header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0'; | |
254 | event->parameter_len = strlen(header->err_specific_desc); | |
255 | memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + 1 + strlen(error_str)); | |
256 | if (event->severity != TW_AEN_SEVERITY_DEBUG) | |
257 | printk(KERN_WARNING "3w-sas:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n", | |
258 | host, | |
259 | twl_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)), | |
260 | TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, error_str, | |
261 | header->err_specific_desc); | |
262 | else | |
263 | tw_dev->aen_count--; | |
264 | ||
265 | tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH; | |
266 | } /* End twl_aen_queue_event() */ | |
267 | ||
268 | /* This function will attempt to post a command packet to the board */ | |
269 | static int twl_post_command_packet(TW_Device_Extension *tw_dev, int request_id) | |
270 | { | |
271 | dma_addr_t command_que_value; | |
272 | ||
273 | command_que_value = tw_dev->command_packet_phys[request_id]; | |
274 | command_que_value += TW_COMMAND_OFFSET; | |
275 | ||
276 | /* First write upper 4 bytes */ | |
277 | writel((u32)((u64)command_que_value >> 32), TWL_HIBQPH_REG_ADDR(tw_dev)); | |
278 | /* Then the lower 4 bytes */ | |
279 | writel((u32)(command_que_value | TWL_PULL_MODE), TWL_HIBQPL_REG_ADDR(tw_dev)); | |
280 | ||
281 | tw_dev->state[request_id] = TW_S_POSTED; | |
282 | tw_dev->posted_request_count++; | |
283 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) | |
284 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | |
285 | ||
286 | return 0; | |
287 | } /* End twl_post_command_packet() */ | |
288 | ||
f619106b | 289 | /* This function hands scsi cdb's to the firmware */ |
09968e50 NC |
290 | static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, |
291 | unsigned char *cdb, int use_sg, | |
292 | TW_SG_Entry_ISO *sglistarg) | |
f619106b AR |
293 | { |
294 | TW_Command_Full *full_command_packet; | |
295 | TW_Command_Apache *command_packet; | |
296 | int i, sg_count; | |
297 | struct scsi_cmnd *srb = NULL; | |
298 | struct scatterlist *sglist = NULL, *sg; | |
299 | int retval = 1; | |
300 | ||
301 | if (tw_dev->srb[request_id]) { | |
302 | srb = tw_dev->srb[request_id]; | |
303 | if (scsi_sglist(srb)) | |
304 | sglist = scsi_sglist(srb); | |
305 | } | |
306 | ||
307 | /* Initialize command packet */ | |
308 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
309 | full_command_packet->header.header_desc.size_header = 128; | |
310 | full_command_packet->header.status_block.error = 0; | |
311 | full_command_packet->header.status_block.severity__reserved = 0; | |
312 | ||
313 | command_packet = &full_command_packet->command.newcommand; | |
314 | command_packet->status = 0; | |
315 | command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI); | |
316 | ||
317 | /* We forced 16 byte cdb use earlier */ | |
318 | if (!cdb) | |
319 | memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN); | |
320 | else | |
321 | memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN); | |
322 | ||
323 | if (srb) { | |
324 | command_packet->unit = srb->device->id; | |
325 | command_packet->request_id__lunl = | |
326 | cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id)); | |
327 | } else { | |
328 | command_packet->request_id__lunl = | |
329 | cpu_to_le16(TW_REQ_LUN_IN(0, request_id)); | |
330 | command_packet->unit = 0; | |
331 | } | |
332 | ||
333 | command_packet->sgl_offset = 16; | |
334 | ||
335 | if (!sglistarg) { | |
336 | /* Map sglist from scsi layer to cmd packet */ | |
337 | if (scsi_sg_count(srb)) { | |
579d69bc CH |
338 | sg_count = scsi_dma_map(srb); |
339 | if (sg_count <= 0) | |
f619106b AR |
340 | goto out; |
341 | ||
342 | scsi_for_each_sg(srb, sg, sg_count, i) { | |
343 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg)); | |
344 | command_packet->sg_list[i].length = TW_CPU_TO_SGL(sg_dma_len(sg)); | |
345 | } | |
346 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id]))); | |
347 | } | |
348 | } else { | |
349 | /* Internal cdb post */ | |
350 | for (i = 0; i < use_sg; i++) { | |
351 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address); | |
352 | command_packet->sg_list[i].length = TW_CPU_TO_SGL(sglistarg[i].length); | |
353 | } | |
354 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg)); | |
355 | } | |
356 | ||
357 | /* Update some stats */ | |
358 | if (srb) { | |
359 | tw_dev->sector_count = scsi_bufflen(srb) / 512; | |
360 | if (tw_dev->sector_count > tw_dev->max_sector_count) | |
361 | tw_dev->max_sector_count = tw_dev->sector_count; | |
362 | tw_dev->sgl_entries = scsi_sg_count(srb); | |
363 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) | |
364 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | |
365 | } | |
366 | ||
367 | /* Now post the command to the board */ | |
368 | retval = twl_post_command_packet(tw_dev, request_id); | |
369 | ||
370 | out: | |
371 | return retval; | |
372 | } /* End twl_scsiop_execute_scsi() */ | |
373 | ||
374 | /* This function will read the aen queue from the isr */ | |
375 | static int twl_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | |
376 | { | |
09968e50 | 377 | unsigned char cdb[TW_MAX_CDB_LEN]; |
f619106b AR |
378 | TW_SG_Entry_ISO sglist[1]; |
379 | TW_Command_Full *full_command_packet; | |
380 | int retval = 1; | |
381 | ||
382 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
383 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
384 | ||
385 | /* Initialize cdb */ | |
386 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
387 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
388 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
389 | ||
390 | /* Initialize sglist */ | |
391 | memset(&sglist, 0, sizeof(TW_SG_Entry_ISO)); | |
392 | sglist[0].length = TW_SECTOR_SIZE; | |
393 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
394 | ||
395 | /* Mark internal command */ | |
396 | tw_dev->srb[request_id] = NULL; | |
397 | ||
398 | /* Now post the command packet */ | |
399 | if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
400 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Post failed while reading AEN queue"); | |
401 | goto out; | |
402 | } | |
403 | retval = 0; | |
404 | out: | |
405 | return retval; | |
406 | } /* End twl_aen_read_queue() */ | |
407 | ||
408 | /* This function will sync firmware time with the host time */ | |
409 | static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) | |
410 | { | |
411 | u32 schedulertime; | |
f619106b AR |
412 | TW_Command_Full *full_command_packet; |
413 | TW_Command *command_packet; | |
414 | TW_Param_Apache *param; | |
bc8f9166 | 415 | time64_t local_time; |
f619106b AR |
416 | |
417 | /* Fill out the command packet */ | |
418 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
419 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
420 | command_packet = &full_command_packet->command.oldcommand; | |
421 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | |
422 | command_packet->request_id = request_id; | |
423 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); | |
424 | command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE); | |
425 | command_packet->size = TW_COMMAND_SIZE; | |
426 | command_packet->byte6_offset.parameter_count = cpu_to_le16(1); | |
427 | ||
428 | /* Setup the param */ | |
429 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
430 | memset(param, 0, TW_SECTOR_SIZE); | |
431 | param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */ | |
432 | param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */ | |
433 | param->parameter_size_bytes = cpu_to_le16(4); | |
434 | ||
435 | /* Convert system time in UTC to local time seconds since last | |
436 | Sunday 12:00AM */ | |
bc8f9166 AB |
437 | local_time = (ktime_get_real_seconds() - (sys_tz.tz_minuteswest * 60)); |
438 | div_u64_rem(local_time - (3 * 86400), 604800, &schedulertime); | |
439 | schedulertime = cpu_to_le32(schedulertime); | |
f619106b AR |
440 | |
441 | memcpy(param->data, &schedulertime, sizeof(u32)); | |
442 | ||
443 | /* Mark internal command */ | |
444 | tw_dev->srb[request_id] = NULL; | |
445 | ||
446 | /* Now post the command */ | |
447 | twl_post_command_packet(tw_dev, request_id); | |
448 | } /* End twl_aen_sync_time() */ | |
449 | ||
450 | /* This function will assign an available request id */ | |
451 | static void twl_get_request_id(TW_Device_Extension *tw_dev, int *request_id) | |
452 | { | |
453 | *request_id = tw_dev->free_queue[tw_dev->free_head]; | |
454 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; | |
455 | tw_dev->state[*request_id] = TW_S_STARTED; | |
456 | } /* End twl_get_request_id() */ | |
457 | ||
458 | /* This function will free a request id */ | |
459 | static void twl_free_request_id(TW_Device_Extension *tw_dev, int request_id) | |
460 | { | |
461 | tw_dev->free_queue[tw_dev->free_tail] = request_id; | |
462 | tw_dev->state[request_id] = TW_S_FINISHED; | |
463 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; | |
464 | } /* End twl_free_request_id() */ | |
465 | ||
466 | /* This function will complete an aen request from the isr */ | |
467 | static int twl_aen_complete(TW_Device_Extension *tw_dev, int request_id) | |
468 | { | |
469 | TW_Command_Full *full_command_packet; | |
470 | TW_Command *command_packet; | |
471 | TW_Command_Apache_Header *header; | |
472 | unsigned short aen; | |
473 | int retval = 1; | |
474 | ||
475 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
476 | tw_dev->posted_request_count--; | |
477 | aen = le16_to_cpu(header->status_block.error); | |
478 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
479 | command_packet = &full_command_packet->command.oldcommand; | |
480 | ||
481 | /* First check for internal completion of set param for time sync */ | |
482 | if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) { | |
483 | /* Keep reading the queue in case there are more aen's */ | |
484 | if (twl_aen_read_queue(tw_dev, request_id)) | |
485 | goto out2; | |
486 | else { | |
487 | retval = 0; | |
488 | goto out; | |
489 | } | |
490 | } | |
491 | ||
492 | switch (aen) { | |
493 | case TW_AEN_QUEUE_EMPTY: | |
494 | /* Quit reading the queue if this is the last one */ | |
495 | break; | |
496 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
497 | twl_aen_sync_time(tw_dev, request_id); | |
498 | retval = 0; | |
499 | goto out; | |
500 | default: | |
501 | twl_aen_queue_event(tw_dev, header); | |
502 | ||
503 | /* If there are more aen's, keep reading the queue */ | |
504 | if (twl_aen_read_queue(tw_dev, request_id)) | |
505 | goto out2; | |
506 | else { | |
507 | retval = 0; | |
508 | goto out; | |
509 | } | |
510 | } | |
511 | retval = 0; | |
512 | out2: | |
513 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
514 | twl_free_request_id(tw_dev, request_id); | |
515 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
516 | out: | |
517 | return retval; | |
518 | } /* End twl_aen_complete() */ | |
519 | ||
520 | /* This function will poll for a response */ | |
521 | static int twl_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) | |
522 | { | |
523 | unsigned long before; | |
524 | dma_addr_t mfa; | |
525 | u32 regh, regl; | |
526 | u32 response; | |
527 | int retval = 1; | |
528 | int found = 0; | |
529 | ||
530 | before = jiffies; | |
531 | ||
532 | while (!found) { | |
533 | if (sizeof(dma_addr_t) > 4) { | |
534 | regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev)); | |
535 | regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev)); | |
536 | mfa = ((u64)regh << 32) | regl; | |
537 | } else | |
538 | mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev)); | |
539 | ||
540 | response = (u32)mfa; | |
541 | ||
542 | if (TW_RESID_OUT(response) == request_id) | |
543 | found = 1; | |
544 | ||
545 | if (time_after(jiffies, before + HZ * seconds)) | |
546 | goto out; | |
547 | ||
548 | msleep(50); | |
549 | } | |
550 | retval = 0; | |
551 | out: | |
552 | return retval; | |
553 | } /* End twl_poll_response() */ | |
554 | ||
555 | /* This function will drain the aen queue */ | |
556 | static int twl_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) | |
557 | { | |
558 | int request_id = 0; | |
09968e50 | 559 | unsigned char cdb[TW_MAX_CDB_LEN]; |
f619106b AR |
560 | TW_SG_Entry_ISO sglist[1]; |
561 | int finished = 0, count = 0; | |
562 | TW_Command_Full *full_command_packet; | |
563 | TW_Command_Apache_Header *header; | |
564 | unsigned short aen; | |
565 | int first_reset = 0, queue = 0, retval = 1; | |
566 | ||
567 | if (no_check_reset) | |
568 | first_reset = 0; | |
569 | else | |
570 | first_reset = 1; | |
571 | ||
572 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
573 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
574 | ||
575 | /* Initialize cdb */ | |
576 | memset(&cdb, 0, TW_MAX_CDB_LEN); | |
577 | cdb[0] = REQUEST_SENSE; /* opcode */ | |
578 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | |
579 | ||
580 | /* Initialize sglist */ | |
581 | memset(&sglist, 0, sizeof(TW_SG_Entry_ISO)); | |
582 | sglist[0].length = TW_SECTOR_SIZE; | |
583 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | |
584 | ||
585 | /* Mark internal command */ | |
586 | tw_dev->srb[request_id] = NULL; | |
587 | ||
588 | do { | |
589 | /* Send command to the board */ | |
590 | if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | |
591 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "Error posting request sense"); | |
592 | goto out; | |
593 | } | |
594 | ||
595 | /* Now poll for completion */ | |
596 | if (twl_poll_response(tw_dev, request_id, 30)) { | |
597 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "No valid response while draining AEN queue"); | |
598 | tw_dev->posted_request_count--; | |
599 | goto out; | |
600 | } | |
601 | ||
602 | tw_dev->posted_request_count--; | |
603 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | |
604 | aen = le16_to_cpu(header->status_block.error); | |
605 | queue = 0; | |
606 | count++; | |
607 | ||
608 | switch (aen) { | |
609 | case TW_AEN_QUEUE_EMPTY: | |
610 | if (first_reset != 1) | |
611 | goto out; | |
612 | else | |
613 | finished = 1; | |
614 | break; | |
615 | case TW_AEN_SOFT_RESET: | |
616 | if (first_reset == 0) | |
617 | first_reset = 1; | |
618 | else | |
619 | queue = 1; | |
620 | break; | |
621 | case TW_AEN_SYNC_TIME_WITH_HOST: | |
622 | break; | |
623 | default: | |
624 | queue = 1; | |
625 | } | |
626 | ||
627 | /* Now queue an event info */ | |
628 | if (queue) | |
629 | twl_aen_queue_event(tw_dev, header); | |
630 | } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN)); | |
631 | ||
632 | if (count == TW_MAX_AEN_DRAIN) | |
633 | goto out; | |
634 | ||
635 | retval = 0; | |
636 | out: | |
637 | tw_dev->state[request_id] = TW_S_INITIAL; | |
638 | return retval; | |
639 | } /* End twl_aen_drain_queue() */ | |
640 | ||
641 | /* This function will allocate memory and check if it is correctly aligned */ | |
642 | static int twl_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | |
643 | { | |
644 | int i; | |
645 | dma_addr_t dma_handle; | |
646 | unsigned long *cpu_addr; | |
647 | int retval = 1; | |
648 | ||
b1fa1229 CH |
649 | cpu_addr = dma_zalloc_coherent(&tw_dev->tw_pci_dev->dev, |
650 | size * TW_Q_LENGTH, &dma_handle, GFP_KERNEL); | |
f619106b AR |
651 | if (!cpu_addr) { |
652 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed"); | |
653 | goto out; | |
654 | } | |
655 | ||
f619106b AR |
656 | for (i = 0; i < TW_Q_LENGTH; i++) { |
657 | switch(which) { | |
658 | case 0: | |
659 | tw_dev->command_packet_phys[i] = dma_handle+(i*size); | |
660 | tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size)); | |
661 | break; | |
662 | case 1: | |
663 | tw_dev->generic_buffer_phys[i] = dma_handle+(i*size); | |
664 | tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
665 | break; | |
666 | case 2: | |
667 | tw_dev->sense_buffer_phys[i] = dma_handle+(i*size); | |
668 | tw_dev->sense_buffer_virt[i] = (TW_Command_Apache_Header *)((unsigned char *)cpu_addr + (i*size)); | |
669 | break; | |
670 | } | |
671 | } | |
672 | retval = 0; | |
673 | out: | |
674 | return retval; | |
675 | } /* End twl_allocate_memory() */ | |
676 | ||
677 | /* This function will load the request id and various sgls for ioctls */ | |
678 | static void twl_load_sgl(TW_Device_Extension *tw_dev, TW_Command_Full *full_command_packet, int request_id, dma_addr_t dma_handle, int length) | |
679 | { | |
680 | TW_Command *oldcommand; | |
681 | TW_Command_Apache *newcommand; | |
682 | TW_SG_Entry_ISO *sgl; | |
683 | unsigned int pae = 0; | |
684 | ||
685 | if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4)) | |
686 | pae = 1; | |
687 | ||
688 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | |
689 | newcommand = &full_command_packet->command.newcommand; | |
690 | newcommand->request_id__lunl = | |
691 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id)); | |
692 | if (length) { | |
693 | newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); | |
694 | newcommand->sg_list[0].length = TW_CPU_TO_SGL(length); | |
695 | } | |
696 | newcommand->sgl_entries__lunh = | |
697 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0)); | |
698 | } else { | |
699 | oldcommand = &full_command_packet->command.oldcommand; | |
700 | oldcommand->request_id = request_id; | |
701 | ||
702 | if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) { | |
703 | /* Load the sg list */ | |
704 | sgl = (TW_SG_Entry_ISO *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry_ISO)/4) + pae + (sizeof(dma_addr_t) > 4 ? 1 : 0)); | |
705 | sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); | |
706 | sgl->length = TW_CPU_TO_SGL(length); | |
707 | oldcommand->size += pae; | |
708 | oldcommand->size += sizeof(dma_addr_t) > 4 ? 1 : 0; | |
709 | } | |
710 | } | |
711 | } /* End twl_load_sgl() */ | |
712 | ||
713 | /* This function handles ioctl for the character device | |
714 | This interface is used by smartmontools open source software */ | |
f4927c45 | 715 | static long twl_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
f619106b AR |
716 | { |
717 | long timeout; | |
718 | unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; | |
719 | dma_addr_t dma_handle; | |
720 | int request_id = 0; | |
721 | TW_Ioctl_Driver_Command driver_command; | |
496ad9aa | 722 | struct inode *inode = file_inode(file); |
f619106b AR |
723 | TW_Ioctl_Buf_Apache *tw_ioctl; |
724 | TW_Command_Full *full_command_packet; | |
725 | TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)]; | |
726 | int retval = -EFAULT; | |
727 | void __user *argp = (void __user *)arg; | |
728 | ||
c45d15d2 | 729 | mutex_lock(&twl_chrdev_mutex); |
f4927c45 | 730 | |
f619106b AR |
731 | /* Only let one of these through at a time */ |
732 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { | |
733 | retval = -EINTR; | |
734 | goto out; | |
735 | } | |
736 | ||
737 | /* First copy down the driver command */ | |
738 | if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command))) | |
739 | goto out2; | |
740 | ||
741 | /* Check data buffer size */ | |
742 | if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) { | |
743 | retval = -EINVAL; | |
744 | goto out2; | |
745 | } | |
746 | ||
747 | /* Hardware can only do multiple of 512 byte transfers */ | |
748 | data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511; | |
749 | ||
750 | /* Now allocate ioctl buf memory */ | |
751 | 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); | |
752 | if (!cpu_addr) { | |
753 | retval = -ENOMEM; | |
754 | goto out2; | |
755 | } | |
756 | ||
757 | tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr; | |
758 | ||
759 | /* Now copy down the entire ioctl */ | |
760 | if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1)) | |
761 | goto out3; | |
762 | ||
763 | /* See which ioctl we are doing */ | |
764 | switch (cmd) { | |
765 | case TW_IOCTL_FIRMWARE_PASS_THROUGH: | |
766 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
767 | twl_get_request_id(tw_dev, &request_id); | |
768 | ||
769 | /* Flag internal command */ | |
770 | tw_dev->srb[request_id] = NULL; | |
771 | ||
772 | /* Flag chrdev ioctl */ | |
773 | tw_dev->chrdev_request_id = request_id; | |
774 | ||
775 | full_command_packet = (TW_Command_Full *)&tw_ioctl->firmware_command; | |
776 | ||
777 | /* Load request id and sglist for both command types */ | |
778 | twl_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted); | |
779 | ||
780 | memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full)); | |
781 | ||
782 | /* Now post the command packet to the controller */ | |
783 | twl_post_command_packet(tw_dev, request_id); | |
784 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
785 | ||
786 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | |
787 | ||
788 | /* Now wait for command to complete */ | |
789 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | |
790 | ||
791 | /* We timed out, and didn't get an interrupt */ | |
792 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | |
793 | /* Now we need to reset the board */ | |
794 | printk(KERN_WARNING "3w-sas: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n", | |
795 | tw_dev->host->host_no, TW_DRIVER, 0x6, | |
796 | cmd); | |
797 | retval = -EIO; | |
798 | twl_reset_device_extension(tw_dev, 1); | |
799 | goto out3; | |
800 | } | |
801 | ||
802 | /* Now copy in the command packet response */ | |
803 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full)); | |
804 | ||
805 | /* Now complete the io */ | |
806 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
807 | tw_dev->posted_request_count--; | |
808 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
809 | twl_free_request_id(tw_dev, request_id); | |
810 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
811 | break; | |
812 | default: | |
813 | retval = -ENOTTY; | |
814 | goto out3; | |
815 | } | |
816 | ||
817 | /* Now copy the entire response to userspace */ | |
818 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0) | |
819 | retval = 0; | |
820 | out3: | |
821 | /* Now free ioctl buf memory */ | |
822 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle); | |
823 | out2: | |
824 | mutex_unlock(&tw_dev->ioctl_lock); | |
825 | out: | |
c45d15d2 | 826 | mutex_unlock(&twl_chrdev_mutex); |
f619106b AR |
827 | return retval; |
828 | } /* End twl_chrdev_ioctl() */ | |
829 | ||
830 | /* This function handles open for the character device */ | |
831 | static int twl_chrdev_open(struct inode *inode, struct file *file) | |
832 | { | |
833 | unsigned int minor_number; | |
834 | int retval = -ENODEV; | |
835 | ||
836 | if (!capable(CAP_SYS_ADMIN)) { | |
837 | retval = -EACCES; | |
838 | goto out; | |
839 | } | |
840 | ||
f619106b AR |
841 | minor_number = iminor(inode); |
842 | if (minor_number >= twl_device_extension_count) | |
843 | goto out; | |
844 | retval = 0; | |
845 | out: | |
846 | return retval; | |
847 | } /* End twl_chrdev_open() */ | |
848 | ||
849 | /* File operations struct for character device */ | |
850 | static const struct file_operations twl_fops = { | |
851 | .owner = THIS_MODULE, | |
f4927c45 | 852 | .unlocked_ioctl = twl_chrdev_ioctl, |
f619106b | 853 | .open = twl_chrdev_open, |
6038f373 AB |
854 | .release = NULL, |
855 | .llseek = noop_llseek, | |
f619106b AR |
856 | }; |
857 | ||
858 | /* This function passes sense data from firmware to scsi layer */ | |
859 | static int twl_fill_sense(TW_Device_Extension *tw_dev, int i, int request_id, int copy_sense, int print_host) | |
860 | { | |
861 | TW_Command_Apache_Header *header; | |
862 | TW_Command_Full *full_command_packet; | |
863 | unsigned short error; | |
864 | char *error_str; | |
865 | int retval = 1; | |
866 | ||
867 | header = tw_dev->sense_buffer_virt[i]; | |
868 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
869 | ||
870 | /* Get embedded firmware error string */ | |
871 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc) + 1]); | |
872 | ||
873 | /* Don't print error for Logical unit not supported during rollcall */ | |
874 | error = le16_to_cpu(header->status_block.error); | |
875 | if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE) && (error != TW_ERROR_INVALID_FIELD_IN_CDB)) { | |
876 | if (print_host) | |
877 | printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
878 | tw_dev->host->host_no, | |
879 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
880 | header->status_block.error, | |
881 | error_str, | |
882 | header->err_specific_desc); | |
883 | else | |
884 | printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s:%s.\n", | |
885 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | |
886 | header->status_block.error, | |
887 | error_str, | |
888 | header->err_specific_desc); | |
889 | } | |
890 | ||
891 | if (copy_sense) { | |
892 | memcpy(tw_dev->srb[request_id]->sense_buffer, header->sense_data, TW_SENSE_DATA_LENGTH); | |
893 | tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1); | |
894 | goto out; | |
895 | } | |
896 | out: | |
897 | return retval; | |
898 | } /* End twl_fill_sense() */ | |
899 | ||
900 | /* This function will free up device extension resources */ | |
901 | static void twl_free_device_extension(TW_Device_Extension *tw_dev) | |
902 | { | |
903 | if (tw_dev->command_packet_virt[0]) | |
b1fa1229 | 904 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, |
f619106b AR |
905 | sizeof(TW_Command_Full)*TW_Q_LENGTH, |
906 | tw_dev->command_packet_virt[0], | |
907 | tw_dev->command_packet_phys[0]); | |
908 | ||
909 | if (tw_dev->generic_buffer_virt[0]) | |
b1fa1229 | 910 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, |
f619106b AR |
911 | TW_SECTOR_SIZE*TW_Q_LENGTH, |
912 | tw_dev->generic_buffer_virt[0], | |
913 | tw_dev->generic_buffer_phys[0]); | |
914 | ||
915 | if (tw_dev->sense_buffer_virt[0]) | |
b1fa1229 | 916 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, |
f619106b AR |
917 | sizeof(TW_Command_Apache_Header)* |
918 | TW_Q_LENGTH, | |
919 | tw_dev->sense_buffer_virt[0], | |
920 | tw_dev->sense_buffer_phys[0]); | |
921 | ||
922 | kfree(tw_dev->event_queue[0]); | |
923 | } /* End twl_free_device_extension() */ | |
924 | ||
925 | /* This function will get parameter table entries from the firmware */ | |
926 | static void *twl_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes) | |
927 | { | |
928 | TW_Command_Full *full_command_packet; | |
929 | TW_Command *command_packet; | |
930 | TW_Param_Apache *param; | |
931 | void *retval = NULL; | |
932 | ||
933 | /* Setup the command packet */ | |
934 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
935 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
936 | command_packet = &full_command_packet->command.oldcommand; | |
937 | ||
938 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
939 | command_packet->size = TW_COMMAND_SIZE; | |
940 | command_packet->request_id = request_id; | |
941 | command_packet->byte6_offset.block_count = cpu_to_le16(1); | |
942 | ||
943 | /* Now setup the param */ | |
944 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | |
945 | memset(param, 0, TW_SECTOR_SIZE); | |
946 | param->table_id = cpu_to_le16(table_id | 0x8000); | |
947 | param->parameter_id = cpu_to_le16(parameter_id); | |
948 | param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes); | |
949 | ||
950 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); | |
951 | command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE); | |
952 | ||
953 | /* Post the command packet to the board */ | |
954 | twl_post_command_packet(tw_dev, request_id); | |
955 | ||
956 | /* Poll for completion */ | |
957 | if (twl_poll_response(tw_dev, request_id, 30)) | |
958 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "No valid response during get param") | |
959 | else | |
960 | retval = (void *)&(param->data[0]); | |
961 | ||
962 | tw_dev->posted_request_count--; | |
963 | tw_dev->state[request_id] = TW_S_INITIAL; | |
964 | ||
965 | return retval; | |
966 | } /* End twl_get_param() */ | |
967 | ||
968 | /* This function will send an initconnection command to controller */ | |
969 | static int twl_initconnection(TW_Device_Extension *tw_dev, int message_credits, | |
970 | u32 set_features, unsigned short current_fw_srl, | |
971 | unsigned short current_fw_arch_id, | |
972 | unsigned short current_fw_branch, | |
973 | unsigned short current_fw_build, | |
974 | unsigned short *fw_on_ctlr_srl, | |
975 | unsigned short *fw_on_ctlr_arch_id, | |
976 | unsigned short *fw_on_ctlr_branch, | |
977 | unsigned short *fw_on_ctlr_build, | |
978 | u32 *init_connect_result) | |
979 | { | |
980 | TW_Command_Full *full_command_packet; | |
981 | TW_Initconnect *tw_initconnect; | |
982 | int request_id = 0, retval = 1; | |
983 | ||
984 | /* Initialize InitConnection command packet */ | |
985 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
986 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | |
987 | full_command_packet->header.header_desc.size_header = 128; | |
988 | ||
989 | tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand; | |
990 | tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION); | |
991 | tw_initconnect->request_id = request_id; | |
992 | tw_initconnect->message_credits = cpu_to_le16(message_credits); | |
993 | tw_initconnect->features = set_features; | |
994 | ||
995 | /* Turn on 64-bit sgl support if we need to */ | |
996 | tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0; | |
997 | ||
998 | tw_initconnect->features = cpu_to_le32(tw_initconnect->features); | |
999 | ||
1000 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | |
1001 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED; | |
1002 | tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl); | |
1003 | tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id); | |
1004 | tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch); | |
1005 | tw_initconnect->fw_build = cpu_to_le16(current_fw_build); | |
1006 | } else | |
1007 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE; | |
1008 | ||
1009 | /* Send command packet to the board */ | |
1010 | twl_post_command_packet(tw_dev, request_id); | |
1011 | ||
1012 | /* Poll for completion */ | |
1013 | if (twl_poll_response(tw_dev, request_id, 30)) { | |
1014 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x8, "No valid response during init connection"); | |
1015 | } else { | |
1016 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | |
1017 | *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl); | |
1018 | *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id); | |
1019 | *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch); | |
1020 | *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build); | |
1021 | *init_connect_result = le32_to_cpu(tw_initconnect->result); | |
1022 | } | |
1023 | retval = 0; | |
1024 | } | |
1025 | ||
1026 | tw_dev->posted_request_count--; | |
1027 | tw_dev->state[request_id] = TW_S_INITIAL; | |
1028 | ||
1029 | return retval; | |
1030 | } /* End twl_initconnection() */ | |
1031 | ||
1032 | /* This function will initialize the fields of a device extension */ | |
1033 | static int twl_initialize_device_extension(TW_Device_Extension *tw_dev) | |
1034 | { | |
1035 | int i, retval = 1; | |
1036 | ||
1037 | /* Initialize command packet buffers */ | |
1038 | if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) { | |
1039 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x9, "Command packet memory allocation failed"); | |
1040 | goto out; | |
1041 | } | |
1042 | ||
1043 | /* Initialize generic buffer */ | |
1044 | if (twl_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) { | |
1045 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Generic memory allocation failed"); | |
1046 | goto out; | |
1047 | } | |
1048 | ||
1049 | /* Allocate sense buffers */ | |
1050 | if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Apache_Header), 2)) { | |
1051 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xb, "Sense buffer allocation failed"); | |
1052 | goto out; | |
1053 | } | |
1054 | ||
1055 | /* Allocate event info space */ | |
1056 | tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL); | |
1057 | if (!tw_dev->event_queue[0]) { | |
1058 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "Event info memory allocation failed"); | |
1059 | goto out; | |
1060 | } | |
1061 | ||
1062 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1063 | tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event))); | |
1064 | tw_dev->free_queue[i] = i; | |
1065 | tw_dev->state[i] = TW_S_INITIAL; | |
1066 | } | |
1067 | ||
1068 | tw_dev->free_head = TW_Q_START; | |
1069 | tw_dev->free_tail = TW_Q_START; | |
1070 | tw_dev->error_sequence_id = 1; | |
1071 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1072 | ||
1073 | mutex_init(&tw_dev->ioctl_lock); | |
1074 | init_waitqueue_head(&tw_dev->ioctl_wqueue); | |
1075 | ||
1076 | retval = 0; | |
1077 | out: | |
1078 | return retval; | |
1079 | } /* End twl_initialize_device_extension() */ | |
1080 | ||
f619106b AR |
1081 | /* This function will handle attention interrupts */ |
1082 | static int twl_handle_attention_interrupt(TW_Device_Extension *tw_dev) | |
1083 | { | |
1084 | int retval = 1; | |
1085 | u32 request_id, doorbell; | |
1086 | ||
1087 | /* Read doorbell status */ | |
1088 | doorbell = readl(TWL_HOBDB_REG_ADDR(tw_dev)); | |
1089 | ||
1090 | /* Check for controller errors */ | |
1091 | if (doorbell & TWL_DOORBELL_CONTROLLER_ERROR) { | |
1092 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "Microcontroller Error: clearing"); | |
1093 | goto out; | |
1094 | } | |
1095 | ||
1096 | /* Check if we need to perform an AEN drain */ | |
1097 | if (doorbell & TWL_DOORBELL_ATTENTION_INTERRUPT) { | |
1098 | if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) { | |
1099 | twl_get_request_id(tw_dev, &request_id); | |
1100 | if (twl_aen_read_queue(tw_dev, request_id)) { | |
1101 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1102 | twl_free_request_id(tw_dev, request_id); | |
1103 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | |
1104 | } | |
1105 | } | |
1106 | } | |
1107 | ||
1108 | retval = 0; | |
1109 | out: | |
1110 | /* Clear doorbell interrupt */ | |
1111 | TWL_CLEAR_DB_INTERRUPT(tw_dev); | |
1112 | ||
1113 | /* Make sure the clear was flushed by reading it back */ | |
1114 | readl(TWL_HOBDBC_REG_ADDR(tw_dev)); | |
1115 | ||
1116 | return retval; | |
1117 | } /* End twl_handle_attention_interrupt() */ | |
1118 | ||
1119 | /* Interrupt service routine */ | |
1120 | static irqreturn_t twl_interrupt(int irq, void *dev_instance) | |
1121 | { | |
1122 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; | |
1123 | int i, handled = 0, error = 0; | |
1124 | dma_addr_t mfa = 0; | |
1125 | u32 reg, regl, regh, response, request_id = 0; | |
1126 | struct scsi_cmnd *cmd; | |
1127 | TW_Command_Full *full_command_packet; | |
1128 | ||
1129 | spin_lock(tw_dev->host->host_lock); | |
1130 | ||
1131 | /* Read host interrupt status */ | |
1132 | reg = readl(TWL_HISTAT_REG_ADDR(tw_dev)); | |
1133 | ||
1134 | /* Check if this is our interrupt, otherwise bail */ | |
1135 | if (!(reg & TWL_HISTATUS_VALID_INTERRUPT)) | |
1136 | goto twl_interrupt_bail; | |
1137 | ||
1138 | handled = 1; | |
1139 | ||
1140 | /* If we are resetting, bail */ | |
1141 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) | |
1142 | goto twl_interrupt_bail; | |
1143 | ||
1144 | /* Attention interrupt */ | |
1145 | if (reg & TWL_HISTATUS_ATTENTION_INTERRUPT) { | |
1146 | if (twl_handle_attention_interrupt(tw_dev)) { | |
1147 | TWL_MASK_INTERRUPTS(tw_dev); | |
1148 | goto twl_interrupt_bail; | |
1149 | } | |
1150 | } | |
1151 | ||
1152 | /* Response interrupt */ | |
1153 | while (reg & TWL_HISTATUS_RESPONSE_INTERRUPT) { | |
1154 | if (sizeof(dma_addr_t) > 4) { | |
1155 | regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev)); | |
1156 | regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev)); | |
1157 | mfa = ((u64)regh << 32) | regl; | |
1158 | } else | |
1159 | mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev)); | |
1160 | ||
1161 | error = 0; | |
1162 | response = (u32)mfa; | |
1163 | ||
1164 | /* Check for command packet error */ | |
1165 | if (!TW_NOTMFA_OUT(response)) { | |
1166 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1167 | if (tw_dev->sense_buffer_phys[i] == mfa) { | |
1168 | request_id = le16_to_cpu(tw_dev->sense_buffer_virt[i]->header_desc.request_id); | |
1169 | if (tw_dev->srb[request_id] != NULL) | |
1170 | error = twl_fill_sense(tw_dev, i, request_id, 1, 1); | |
1171 | else { | |
1172 | /* Skip ioctl error prints */ | |
1173 | if (request_id != tw_dev->chrdev_request_id) | |
1174 | error = twl_fill_sense(tw_dev, i, request_id, 0, 1); | |
1175 | else | |
1176 | memcpy(tw_dev->command_packet_virt[request_id], tw_dev->sense_buffer_virt[i], sizeof(TW_Command_Apache_Header)); | |
1177 | } | |
1178 | ||
1179 | /* Now re-post the sense buffer */ | |
1180 | writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev)); | |
1181 | writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev)); | |
1182 | break; | |
1183 | } | |
1184 | } | |
1185 | } else | |
1186 | request_id = TW_RESID_OUT(response); | |
1187 | ||
1188 | full_command_packet = tw_dev->command_packet_virt[request_id]; | |
1189 | ||
1190 | /* Check for correct state */ | |
1191 | if (tw_dev->state[request_id] != TW_S_POSTED) { | |
1192 | if (tw_dev->srb[request_id] != NULL) { | |
1193 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Received a request id that wasn't posted"); | |
1194 | TWL_MASK_INTERRUPTS(tw_dev); | |
1195 | goto twl_interrupt_bail; | |
1196 | } | |
1197 | } | |
1198 | ||
1199 | /* Check for internal command completion */ | |
1200 | if (tw_dev->srb[request_id] == NULL) { | |
1201 | if (request_id != tw_dev->chrdev_request_id) { | |
1202 | if (twl_aen_complete(tw_dev, request_id)) | |
1203 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xf, "Error completing AEN during attention interrupt"); | |
1204 | } else { | |
1205 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1206 | wake_up(&tw_dev->ioctl_wqueue); | |
1207 | } | |
1208 | } else { | |
1209 | cmd = tw_dev->srb[request_id]; | |
1210 | ||
1211 | if (!error) | |
1212 | cmd->result = (DID_OK << 16); | |
1213 | ||
1214 | /* Report residual bytes for single sgl */ | |
1215 | if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) { | |
1216 | if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id])) | |
1217 | scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length); | |
1218 | } | |
1219 | ||
1220 | /* Now complete the io */ | |
579d69bc CH |
1221 | scsi_dma_unmap(cmd); |
1222 | cmd->scsi_done(cmd); | |
f619106b AR |
1223 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1224 | twl_free_request_id(tw_dev, request_id); | |
1225 | tw_dev->posted_request_count--; | |
f619106b AR |
1226 | } |
1227 | ||
1228 | /* Check for another response interrupt */ | |
1229 | reg = readl(TWL_HISTAT_REG_ADDR(tw_dev)); | |
1230 | } | |
1231 | ||
1232 | twl_interrupt_bail: | |
1233 | spin_unlock(tw_dev->host->host_lock); | |
1234 | return IRQ_RETVAL(handled); | |
1235 | } /* End twl_interrupt() */ | |
1236 | ||
1237 | /* This function will poll for a register change */ | |
1238 | static int twl_poll_register(TW_Device_Extension *tw_dev, void *reg, u32 value, u32 result, int seconds) | |
1239 | { | |
1240 | unsigned long before; | |
1241 | int retval = 1; | |
1242 | u32 reg_value; | |
1243 | ||
1244 | reg_value = readl(reg); | |
1245 | before = jiffies; | |
1246 | ||
1247 | while ((reg_value & value) != result) { | |
1248 | reg_value = readl(reg); | |
1249 | if (time_after(jiffies, before + HZ * seconds)) | |
1250 | goto out; | |
1251 | msleep(50); | |
1252 | } | |
1253 | retval = 0; | |
1254 | out: | |
1255 | return retval; | |
1256 | } /* End twl_poll_register() */ | |
1257 | ||
1258 | /* This function will reset a controller */ | |
1259 | static int twl_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset) | |
1260 | { | |
1261 | int retval = 1; | |
1262 | int i = 0; | |
1263 | u32 status = 0; | |
1264 | unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0; | |
1265 | unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0; | |
1266 | u32 init_connect_result = 0; | |
1267 | int tries = 0; | |
1268 | int do_soft_reset = soft_reset; | |
1269 | ||
1270 | while (tries < TW_MAX_RESET_TRIES) { | |
1271 | /* Do a soft reset if one is needed */ | |
1272 | if (do_soft_reset) { | |
1273 | TWL_SOFT_RESET(tw_dev); | |
1274 | ||
1275 | /* Make sure controller is in a good state */ | |
1276 | if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, 0x0, 30)) { | |
1277 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Controller never went non-ready during reset sequence"); | |
1278 | tries++; | |
1279 | continue; | |
1280 | } | |
1281 | if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, TWL_CONTROLLER_READY, 60)) { | |
1282 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x11, "Controller not ready during reset sequence"); | |
1283 | tries++; | |
1284 | continue; | |
1285 | } | |
1286 | } | |
1287 | ||
1288 | /* Initconnect */ | |
1289 | if (twl_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | |
1290 | TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL, | |
1291 | TW_9750_ARCH_ID, TW_CURRENT_DRIVER_BRANCH, | |
1292 | TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl, | |
1293 | &fw_on_ctlr_arch_id, &fw_on_ctlr_branch, | |
1294 | &fw_on_ctlr_build, &init_connect_result)) { | |
1295 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x12, "Initconnection failed while checking SRL"); | |
1296 | do_soft_reset = 1; | |
1297 | tries++; | |
1298 | continue; | |
1299 | } | |
1300 | ||
1301 | /* Load sense buffers */ | |
1302 | while (i < TW_Q_LENGTH) { | |
1303 | writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev)); | |
1304 | writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev)); | |
1305 | ||
1306 | /* Check status for over-run after each write */ | |
1307 | status = readl(TWL_STATUS_REG_ADDR(tw_dev)); | |
1308 | if (!(status & TWL_STATUS_OVERRUN_SUBMIT)) | |
1309 | i++; | |
1310 | } | |
1311 | ||
1312 | /* Now check status */ | |
1313 | status = readl(TWL_STATUS_REG_ADDR(tw_dev)); | |
1314 | if (status) { | |
1315 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "Bad controller status after loading sense buffers"); | |
1316 | do_soft_reset = 1; | |
1317 | tries++; | |
1318 | continue; | |
1319 | } | |
1320 | ||
1321 | /* Drain the AEN queue */ | |
1322 | if (twl_aen_drain_queue(tw_dev, soft_reset)) { | |
1323 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x14, "AEN drain failed during reset sequence"); | |
1324 | do_soft_reset = 1; | |
1325 | tries++; | |
1326 | continue; | |
1327 | } | |
1328 | ||
1329 | /* Load rest of compatibility struct */ | |
1330 | strncpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION)); | |
1331 | tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL; | |
1332 | tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH; | |
1333 | tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD; | |
1334 | tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL; | |
1335 | tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH; | |
1336 | tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD; | |
1337 | tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl; | |
1338 | tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch; | |
1339 | tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build; | |
1340 | ||
1341 | /* If we got here, controller is in a good state */ | |
1342 | retval = 0; | |
1343 | goto out; | |
1344 | } | |
1345 | out: | |
1346 | return retval; | |
1347 | } /* End twl_reset_sequence() */ | |
1348 | ||
1349 | /* This function will reset a device extension */ | |
1350 | static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset) | |
1351 | { | |
1352 | int i = 0, retval = 1; | |
1353 | unsigned long flags = 0; | |
1354 | ||
1355 | /* Block SCSI requests while we are resetting */ | |
1356 | if (ioctl_reset) | |
1357 | scsi_block_requests(tw_dev->host); | |
1358 | ||
1359 | set_bit(TW_IN_RESET, &tw_dev->flags); | |
1360 | TWL_MASK_INTERRUPTS(tw_dev); | |
1361 | TWL_CLEAR_DB_INTERRUPT(tw_dev); | |
1362 | ||
1363 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1364 | ||
1365 | /* Abort all requests that are in progress */ | |
1366 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1367 | if ((tw_dev->state[i] != TW_S_FINISHED) && | |
1368 | (tw_dev->state[i] != TW_S_INITIAL) && | |
1369 | (tw_dev->state[i] != TW_S_COMPLETED)) { | |
579d69bc CH |
1370 | struct scsi_cmnd *cmd = tw_dev->srb[i]; |
1371 | ||
1372 | if (cmd) { | |
1373 | cmd->result = (DID_RESET << 16); | |
1374 | scsi_dma_unmap(cmd); | |
1375 | cmd->scsi_done(cmd); | |
f619106b AR |
1376 | } |
1377 | } | |
1378 | } | |
1379 | ||
1380 | /* Reset queues and counts */ | |
1381 | for (i = 0; i < TW_Q_LENGTH; i++) { | |
1382 | tw_dev->free_queue[i] = i; | |
1383 | tw_dev->state[i] = TW_S_INITIAL; | |
1384 | } | |
1385 | tw_dev->free_head = TW_Q_START; | |
1386 | tw_dev->free_tail = TW_Q_START; | |
1387 | tw_dev->posted_request_count = 0; | |
1388 | ||
1389 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1390 | ||
1391 | if (twl_reset_sequence(tw_dev, 1)) | |
1392 | goto out; | |
1393 | ||
1394 | TWL_UNMASK_INTERRUPTS(tw_dev); | |
1395 | ||
1396 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
1397 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1398 | ||
1399 | retval = 0; | |
1400 | out: | |
1401 | if (ioctl_reset) | |
1402 | scsi_unblock_requests(tw_dev->host); | |
1403 | return retval; | |
1404 | } /* End twl_reset_device_extension() */ | |
1405 | ||
1406 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | |
1407 | static int twl_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) | |
1408 | { | |
1409 | int heads, sectors; | |
1410 | TW_Device_Extension *tw_dev; | |
1411 | ||
1412 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | |
1413 | ||
1414 | if (capacity >= 0x200000) { | |
1415 | heads = 255; | |
1416 | sectors = 63; | |
1417 | } else { | |
1418 | heads = 64; | |
1419 | sectors = 32; | |
1420 | } | |
1421 | ||
1422 | geom[0] = heads; | |
1423 | geom[1] = sectors; | |
1424 | geom[2] = sector_div(capacity, heads * sectors); /* cylinders */ | |
1425 | ||
1426 | return 0; | |
1427 | } /* End twl_scsi_biosparam() */ | |
1428 | ||
1429 | /* This is the new scsi eh reset function */ | |
1430 | static int twl_scsi_eh_reset(struct scsi_cmnd *SCpnt) | |
1431 | { | |
1432 | TW_Device_Extension *tw_dev = NULL; | |
1433 | int retval = FAILED; | |
1434 | ||
1435 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1436 | ||
1437 | tw_dev->num_resets++; | |
1438 | ||
1439 | sdev_printk(KERN_WARNING, SCpnt->device, | |
1440 | "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n", | |
1441 | TW_DRIVER, 0x2c, SCpnt->cmnd[0]); | |
1442 | ||
1443 | /* Make sure we are not issuing an ioctl or resetting from ioctl */ | |
1444 | mutex_lock(&tw_dev->ioctl_lock); | |
1445 | ||
1446 | /* Now reset the card and some of the device extension data */ | |
1447 | if (twl_reset_device_extension(tw_dev, 0)) { | |
1448 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "Controller reset failed during scsi host reset"); | |
1449 | goto out; | |
1450 | } | |
1451 | ||
1452 | retval = SUCCESS; | |
1453 | out: | |
1454 | mutex_unlock(&tw_dev->ioctl_lock); | |
1455 | return retval; | |
1456 | } /* End twl_scsi_eh_reset() */ | |
1457 | ||
1458 | /* This is the main scsi queue function to handle scsi opcodes */ | |
f281233d | 1459 | static int twl_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) |
f619106b AR |
1460 | { |
1461 | int request_id, retval; | |
1462 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1463 | ||
1464 | /* If we are resetting due to timed out ioctl, report as busy */ | |
1465 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) { | |
1466 | retval = SCSI_MLQUEUE_HOST_BUSY; | |
1467 | goto out; | |
1468 | } | |
1469 | ||
1470 | /* Save done function into scsi_cmnd struct */ | |
1471 | SCpnt->scsi_done = done; | |
1472 | ||
1473 | /* Get a free request id */ | |
1474 | twl_get_request_id(tw_dev, &request_id); | |
1475 | ||
1476 | /* Save the scsi command for use by the ISR */ | |
1477 | tw_dev->srb[request_id] = SCpnt; | |
1478 | ||
f619106b AR |
1479 | retval = twl_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); |
1480 | if (retval) { | |
1481 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1482 | twl_free_request_id(tw_dev, request_id); | |
1483 | SCpnt->result = (DID_ERROR << 16); | |
1484 | done(SCpnt); | |
1485 | retval = 0; | |
1486 | } | |
1487 | out: | |
1488 | return retval; | |
1489 | } /* End twl_scsi_queue() */ | |
1490 | ||
f281233d JG |
1491 | static DEF_SCSI_QCMD(twl_scsi_queue) |
1492 | ||
f619106b AR |
1493 | /* This function tells the controller to shut down */ |
1494 | static void __twl_shutdown(TW_Device_Extension *tw_dev) | |
1495 | { | |
1496 | /* Disable interrupts */ | |
1497 | TWL_MASK_INTERRUPTS(tw_dev); | |
1498 | ||
1499 | /* Free up the IRQ */ | |
1500 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
1501 | ||
1502 | printk(KERN_WARNING "3w-sas: Shutting down host %d.\n", tw_dev->host->host_no); | |
1503 | ||
1504 | /* Tell the card we are shutting down */ | |
1505 | if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | |
1506 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Connection shutdown failed"); | |
1507 | } else { | |
1508 | printk(KERN_WARNING "3w-sas: Shutdown complete.\n"); | |
1509 | } | |
1510 | ||
1511 | /* Clear doorbell interrupt just before exit */ | |
1512 | TWL_CLEAR_DB_INTERRUPT(tw_dev); | |
1513 | } /* End __twl_shutdown() */ | |
1514 | ||
1515 | /* Wrapper for __twl_shutdown */ | |
1516 | static void twl_shutdown(struct pci_dev *pdev) | |
1517 | { | |
1518 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
1519 | TW_Device_Extension *tw_dev; | |
1520 | ||
1521 | if (!host) | |
1522 | return; | |
1523 | ||
1524 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
1525 | ||
1526 | if (tw_dev->online) | |
1527 | __twl_shutdown(tw_dev); | |
1528 | } /* End twl_shutdown() */ | |
1529 | ||
1530 | /* This function configures unit settings when a unit is coming on-line */ | |
1531 | static int twl_slave_configure(struct scsi_device *sdev) | |
1532 | { | |
1533 | /* Force 60 second timeout */ | |
1534 | blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); | |
1535 | ||
1536 | return 0; | |
1537 | } /* End twl_slave_configure() */ | |
1538 | ||
1539 | /* scsi_host_template initializer */ | |
1540 | static struct scsi_host_template driver_template = { | |
1541 | .module = THIS_MODULE, | |
1542 | .name = "3w-sas", | |
1543 | .queuecommand = twl_scsi_queue, | |
1544 | .eh_host_reset_handler = twl_scsi_eh_reset, | |
1545 | .bios_param = twl_scsi_biosparam, | |
db5ed4df | 1546 | .change_queue_depth = scsi_change_queue_depth, |
f619106b AR |
1547 | .can_queue = TW_Q_LENGTH-2, |
1548 | .slave_configure = twl_slave_configure, | |
1549 | .this_id = -1, | |
1550 | .sg_tablesize = TW_LIBERATOR_MAX_SGL_LENGTH, | |
1551 | .max_sectors = TW_MAX_SECTORS, | |
1552 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | |
1553 | .use_clustering = ENABLE_CLUSTERING, | |
1554 | .shost_attrs = twl_host_attrs, | |
54b2b50c MP |
1555 | .emulated = 1, |
1556 | .no_write_same = 1, | |
f619106b AR |
1557 | }; |
1558 | ||
1559 | /* This function will probe and initialize a card */ | |
6f039790 | 1560 | static int twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) |
f619106b AR |
1561 | { |
1562 | struct Scsi_Host *host = NULL; | |
1563 | TW_Device_Extension *tw_dev; | |
1564 | int retval = -ENODEV; | |
1565 | int *ptr_phycount, phycount=0; | |
1566 | ||
1567 | retval = pci_enable_device(pdev); | |
1568 | if (retval) { | |
1569 | TW_PRINTK(host, TW_DRIVER, 0x17, "Failed to enable pci device"); | |
1570 | goto out_disable_device; | |
1571 | } | |
1572 | ||
1573 | pci_set_master(pdev); | |
1574 | pci_try_set_mwi(pdev); | |
1575 | ||
b1fa1229 CH |
1576 | if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) || |
1577 | dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) { | |
1578 | TW_PRINTK(host, TW_DRIVER, 0x18, "Failed to set dma mask"); | |
1579 | retval = -ENODEV; | |
1580 | goto out_disable_device; | |
1581 | } | |
f619106b AR |
1582 | |
1583 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | |
1584 | if (!host) { | |
1585 | TW_PRINTK(host, TW_DRIVER, 0x19, "Failed to allocate memory for device extension"); | |
1586 | retval = -ENOMEM; | |
1587 | goto out_disable_device; | |
1588 | } | |
1589 | tw_dev = shost_priv(host); | |
1590 | ||
1591 | /* Save values to device extension */ | |
1592 | tw_dev->host = host; | |
1593 | tw_dev->tw_pci_dev = pdev; | |
1594 | ||
1595 | if (twl_initialize_device_extension(tw_dev)) { | |
1596 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Failed to initialize device extension"); | |
4dc98c19 | 1597 | retval = -ENOMEM; |
f619106b AR |
1598 | goto out_free_device_extension; |
1599 | } | |
1600 | ||
1601 | /* Request IO regions */ | |
1602 | retval = pci_request_regions(pdev, "3w-sas"); | |
1603 | if (retval) { | |
1604 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Failed to get mem region"); | |
1605 | goto out_free_device_extension; | |
1606 | } | |
1607 | ||
1608 | /* Save base address, use region 1 */ | |
1609 | tw_dev->base_addr = pci_iomap(pdev, 1, 0); | |
1610 | if (!tw_dev->base_addr) { | |
1611 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to ioremap"); | |
4dc98c19 | 1612 | retval = -ENOMEM; |
f619106b AR |
1613 | goto out_release_mem_region; |
1614 | } | |
1615 | ||
1616 | /* Disable interrupts on the card */ | |
1617 | TWL_MASK_INTERRUPTS(tw_dev); | |
1618 | ||
1619 | /* Initialize the card */ | |
1620 | if (twl_reset_sequence(tw_dev, 0)) { | |
1621 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Controller reset failed during probe"); | |
4dc98c19 | 1622 | retval = -ENOMEM; |
f619106b AR |
1623 | goto out_iounmap; |
1624 | } | |
1625 | ||
1626 | /* Set host specific parameters */ | |
1627 | host->max_id = TW_MAX_UNITS; | |
1628 | host->max_cmd_len = TW_MAX_CDB_LEN; | |
1629 | host->max_lun = TW_MAX_LUNS; | |
1630 | host->max_channel = 0; | |
1631 | ||
1632 | /* Register the card with the kernel SCSI layer */ | |
1633 | retval = scsi_add_host(host, &pdev->dev); | |
1634 | if (retval) { | |
1635 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "scsi add host failed"); | |
1636 | goto out_iounmap; | |
1637 | } | |
1638 | ||
1639 | pci_set_drvdata(pdev, host); | |
1640 | ||
1641 | printk(KERN_WARNING "3w-sas: scsi%d: Found an LSI 3ware %s Controller at 0x%llx, IRQ: %d.\n", | |
1642 | host->host_no, | |
1643 | (char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE, | |
1644 | TW_PARAM_MODEL, TW_PARAM_MODEL_LENGTH), | |
1645 | (u64)pci_resource_start(pdev, 1), pdev->irq); | |
1646 | ||
1647 | ptr_phycount = twl_get_param(tw_dev, 2, TW_PARAM_PHY_SUMMARY_TABLE, | |
1648 | TW_PARAM_PHYCOUNT, TW_PARAM_PHYCOUNT_LENGTH); | |
1649 | if (ptr_phycount) | |
1650 | phycount = le32_to_cpu(*(int *)ptr_phycount); | |
1651 | ||
1652 | printk(KERN_WARNING "3w-sas: scsi%d: Firmware %s, BIOS %s, Phys: %d.\n", | |
1653 | host->host_no, | |
1654 | (char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE, | |
1655 | TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH), | |
1656 | (char *)twl_get_param(tw_dev, 2, TW_VERSION_TABLE, | |
1657 | TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH), | |
1658 | phycount); | |
1659 | ||
1660 | /* Try to enable MSI */ | |
1661 | if (use_msi && !pci_enable_msi(pdev)) | |
1662 | set_bit(TW_USING_MSI, &tw_dev->flags); | |
1663 | ||
1664 | /* Now setup the interrupt handler */ | |
1665 | retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev); | |
1666 | if (retval) { | |
1667 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Error requesting IRQ"); | |
1668 | goto out_remove_host; | |
1669 | } | |
1670 | ||
1671 | twl_device_extension_list[twl_device_extension_count] = tw_dev; | |
1672 | twl_device_extension_count++; | |
1673 | ||
1674 | /* Re-enable interrupts on the card */ | |
1675 | TWL_UNMASK_INTERRUPTS(tw_dev); | |
1676 | ||
1677 | /* Finally, scan the host */ | |
1678 | scsi_scan_host(host); | |
1679 | ||
1680 | /* Add sysfs binary files */ | |
1681 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr)) | |
1682 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Failed to create sysfs binary file: 3ware_aen_read"); | |
1683 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr)) | |
1684 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Failed to create sysfs binary file: 3ware_compat_info"); | |
1685 | ||
1686 | if (twl_major == -1) { | |
1687 | if ((twl_major = register_chrdev (0, "twl", &twl_fops)) < 0) | |
1688 | TW_PRINTK(host, TW_DRIVER, 0x22, "Failed to register character device"); | |
1689 | } | |
1690 | tw_dev->online = 1; | |
1691 | return 0; | |
1692 | ||
1693 | out_remove_host: | |
1694 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
1695 | pci_disable_msi(pdev); | |
1696 | scsi_remove_host(host); | |
1697 | out_iounmap: | |
1698 | iounmap(tw_dev->base_addr); | |
1699 | out_release_mem_region: | |
1700 | pci_release_regions(pdev); | |
1701 | out_free_device_extension: | |
1702 | twl_free_device_extension(tw_dev); | |
1703 | scsi_host_put(host); | |
1704 | out_disable_device: | |
1705 | pci_disable_device(pdev); | |
1706 | ||
1707 | return retval; | |
1708 | } /* End twl_probe() */ | |
1709 | ||
1710 | /* This function is called to remove a device */ | |
1711 | static void twl_remove(struct pci_dev *pdev) | |
1712 | { | |
1713 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
1714 | TW_Device_Extension *tw_dev; | |
1715 | ||
1716 | if (!host) | |
1717 | return; | |
1718 | ||
1719 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
1720 | ||
1721 | if (!tw_dev->online) | |
1722 | return; | |
1723 | ||
1724 | /* Remove sysfs binary files */ | |
1725 | sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr); | |
1726 | sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr); | |
1727 | ||
1728 | scsi_remove_host(tw_dev->host); | |
1729 | ||
1730 | /* Unregister character device */ | |
1731 | if (twl_major >= 0) { | |
1732 | unregister_chrdev(twl_major, "twl"); | |
1733 | twl_major = -1; | |
1734 | } | |
1735 | ||
1736 | /* Shutdown the card */ | |
1737 | __twl_shutdown(tw_dev); | |
1738 | ||
1739 | /* Disable MSI if enabled */ | |
1740 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
1741 | pci_disable_msi(pdev); | |
1742 | ||
1743 | /* Free IO remapping */ | |
1744 | iounmap(tw_dev->base_addr); | |
1745 | ||
1746 | /* Free up the mem region */ | |
1747 | pci_release_regions(pdev); | |
1748 | ||
1749 | /* Free up device extension resources */ | |
1750 | twl_free_device_extension(tw_dev); | |
1751 | ||
1752 | scsi_host_put(tw_dev->host); | |
1753 | pci_disable_device(pdev); | |
1754 | twl_device_extension_count--; | |
1755 | } /* End twl_remove() */ | |
1756 | ||
1757 | #ifdef CONFIG_PM | |
1758 | /* This function is called on PCI suspend */ | |
1759 | static int twl_suspend(struct pci_dev *pdev, pm_message_t state) | |
1760 | { | |
1761 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
1762 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
1763 | ||
1764 | printk(KERN_WARNING "3w-sas: Suspending host %d.\n", tw_dev->host->host_no); | |
1765 | /* Disable interrupts */ | |
1766 | TWL_MASK_INTERRUPTS(tw_dev); | |
1767 | ||
1768 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
1769 | ||
1770 | /* Tell the card we are shutting down */ | |
1771 | if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | |
1772 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x23, "Connection shutdown failed during suspend"); | |
1773 | } else { | |
1774 | printk(KERN_WARNING "3w-sas: Suspend complete.\n"); | |
1775 | } | |
1776 | ||
1777 | /* Clear doorbell interrupt */ | |
1778 | TWL_CLEAR_DB_INTERRUPT(tw_dev); | |
1779 | ||
1780 | pci_save_state(pdev); | |
1781 | pci_disable_device(pdev); | |
1782 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | |
1783 | ||
1784 | return 0; | |
1785 | } /* End twl_suspend() */ | |
1786 | ||
1787 | /* This function is called on PCI resume */ | |
1788 | static int twl_resume(struct pci_dev *pdev) | |
1789 | { | |
1790 | int retval = 0; | |
1791 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
1792 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
1793 | ||
1794 | printk(KERN_WARNING "3w-sas: Resuming host %d.\n", tw_dev->host->host_no); | |
1795 | pci_set_power_state(pdev, PCI_D0); | |
1796 | pci_enable_wake(pdev, PCI_D0, 0); | |
1797 | pci_restore_state(pdev); | |
1798 | ||
1799 | retval = pci_enable_device(pdev); | |
1800 | if (retval) { | |
1801 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x24, "Enable device failed during resume"); | |
1802 | return retval; | |
1803 | } | |
1804 | ||
1805 | pci_set_master(pdev); | |
1806 | pci_try_set_mwi(pdev); | |
1807 | ||
b1fa1229 CH |
1808 | if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)) || |
1809 | dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32))) { | |
1810 | TW_PRINTK(host, TW_DRIVER, 0x25, "Failed to set dma mask during resume"); | |
1811 | retval = -ENODEV; | |
1812 | goto out_disable_device; | |
1813 | } | |
f619106b AR |
1814 | |
1815 | /* Initialize the card */ | |
1816 | if (twl_reset_sequence(tw_dev, 0)) { | |
1817 | retval = -ENODEV; | |
1818 | goto out_disable_device; | |
1819 | } | |
1820 | ||
1821 | /* Now setup the interrupt handler */ | |
1822 | retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev); | |
1823 | if (retval) { | |
1824 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Error requesting IRQ during resume"); | |
1825 | retval = -ENODEV; | |
1826 | goto out_disable_device; | |
1827 | } | |
1828 | ||
1829 | /* Now enable MSI if enabled */ | |
1830 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | |
1831 | pci_enable_msi(pdev); | |
1832 | ||
1833 | /* Re-enable interrupts on the card */ | |
1834 | TWL_UNMASK_INTERRUPTS(tw_dev); | |
1835 | ||
1836 | printk(KERN_WARNING "3w-sas: Resume complete.\n"); | |
1837 | return 0; | |
1838 | ||
1839 | out_disable_device: | |
1840 | scsi_remove_host(host); | |
1841 | pci_disable_device(pdev); | |
1842 | ||
1843 | return retval; | |
1844 | } /* End twl_resume() */ | |
1845 | #endif | |
1846 | ||
1847 | /* PCI Devices supported by this driver */ | |
6f039790 | 1848 | static struct pci_device_id twl_pci_tbl[] = { |
f619106b AR |
1849 | { PCI_VDEVICE(3WARE, PCI_DEVICE_ID_3WARE_9750) }, |
1850 | { } | |
1851 | }; | |
1852 | MODULE_DEVICE_TABLE(pci, twl_pci_tbl); | |
1853 | ||
1854 | /* pci_driver initializer */ | |
1855 | static struct pci_driver twl_driver = { | |
1856 | .name = "3w-sas", | |
1857 | .id_table = twl_pci_tbl, | |
1858 | .probe = twl_probe, | |
1859 | .remove = twl_remove, | |
1860 | #ifdef CONFIG_PM | |
1861 | .suspend = twl_suspend, | |
1862 | .resume = twl_resume, | |
1863 | #endif | |
1864 | .shutdown = twl_shutdown | |
1865 | }; | |
1866 | ||
1867 | /* This function is called on driver initialization */ | |
1868 | static int __init twl_init(void) | |
1869 | { | |
1870 | printk(KERN_INFO "LSI 3ware SAS/SATA-RAID Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | |
1871 | ||
1872 | return pci_register_driver(&twl_driver); | |
1873 | } /* End twl_init() */ | |
1874 | ||
1875 | /* This function is called on driver exit */ | |
1876 | static void __exit twl_exit(void) | |
1877 | { | |
1878 | pci_unregister_driver(&twl_driver); | |
1879 | } /* End twl_exit() */ | |
1880 | ||
1881 | module_init(twl_init); | |
1882 | module_exit(twl_exit); | |
1883 |