diff options
Diffstat (limited to 'drivers/scsi/3w-sas.c')
-rw-r--r-- | drivers/scsi/3w-sas.c | 1925 |
1 files changed, 1925 insertions, 0 deletions
diff --git a/drivers/scsi/3w-sas.c b/drivers/scsi/3w-sas.c new file mode 100644 index 000000000000..54c5ffb1eaa1 --- /dev/null +++ b/drivers/scsi/3w-sas.c | |||
@@ -0,0 +1,1925 @@ | |||
1 | /* | ||
2 | 3w-sas.c -- LSI 3ware SAS/SATA-RAID Controller device driver for Linux. | ||
3 | |||
4 | Written By: Adam Radford <linuxraid@lsi.com> | ||
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: | ||
46 | linuxraid@lsi.com | ||
47 | |||
48 | For more information, goto: | ||
49 | http://www.lsi.com | ||
50 | |||
51 | History | ||
52 | ------- | ||
53 | 3.26.02.000 - Initial driver release. | ||
54 | */ | ||
55 | |||
56 | #include <linux/module.h> | ||
57 | #include <linux/reboot.h> | ||
58 | #include <linux/spinlock.h> | ||
59 | #include <linux/interrupt.h> | ||
60 | #include <linux/moduleparam.h> | ||
61 | #include <linux/errno.h> | ||
62 | #include <linux/types.h> | ||
63 | #include <linux/delay.h> | ||
64 | #include <linux/pci.h> | ||
65 | #include <linux/time.h> | ||
66 | #include <linux/mutex.h> | ||
67 | #include <linux/smp_lock.h> | ||
68 | #include <linux/slab.h> | ||
69 | #include <asm/io.h> | ||
70 | #include <asm/irq.h> | ||
71 | #include <asm/uaccess.h> | ||
72 | #include <scsi/scsi.h> | ||
73 | #include <scsi/scsi_host.h> | ||
74 | #include <scsi/scsi_tcq.h> | ||
75 | #include <scsi/scsi_cmnd.h> | ||
76 | #include "3w-sas.h" | ||
77 | |||
78 | /* Globals */ | ||
79 | #define TW_DRIVER_VERSION "3.26.02.000" | ||
80 | static TW_Device_Extension *twl_device_extension_list[TW_MAX_SLOT]; | ||
81 | static unsigned int twl_device_extension_count; | ||
82 | static int twl_major = -1; | ||
83 | extern struct timezone sys_tz; | ||
84 | |||
85 | /* Module parameters */ | ||
86 | MODULE_AUTHOR ("LSI"); | ||
87 | MODULE_DESCRIPTION ("LSI 3ware SAS/SATA-RAID Linux Driver"); | ||
88 | MODULE_LICENSE("GPL"); | ||
89 | MODULE_VERSION(TW_DRIVER_VERSION); | ||
90 | |||
91 | static int use_msi; | ||
92 | module_param(use_msi, int, S_IRUGO); | ||
93 | MODULE_PARM_DESC(use_msi, "Use Message Signaled Interrupts. Default: 0"); | ||
94 | |||
95 | /* Function prototypes */ | ||
96 | static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset); | ||
97 | |||
98 | /* Functions */ | ||
99 | |||
100 | /* This function returns AENs through sysfs */ | ||
101 | static ssize_t twl_sysfs_aen_read(struct kobject *kobj, | ||
102 | struct bin_attribute *bin_attr, | ||
103 | char *outbuf, loff_t offset, size_t count) | ||
104 | { | ||
105 | struct device *dev = container_of(kobj, struct device, kobj); | ||
106 | struct Scsi_Host *shost = class_to_shost(dev); | ||
107 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata; | ||
108 | unsigned long flags = 0; | ||
109 | ssize_t ret; | ||
110 | |||
111 | if (!capable(CAP_SYS_ADMIN)) | ||
112 | return -EACCES; | ||
113 | |||
114 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | ||
115 | ret = memory_read_from_buffer(outbuf, count, &offset, tw_dev->event_queue[0], sizeof(TW_Event) * TW_Q_LENGTH); | ||
116 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | ||
117 | |||
118 | return ret; | ||
119 | } /* End twl_sysfs_aen_read() */ | ||
120 | |||
121 | /* aen_read sysfs attribute initializer */ | ||
122 | static struct bin_attribute twl_sysfs_aen_read_attr = { | ||
123 | .attr = { | ||
124 | .name = "3ware_aen_read", | ||
125 | .mode = S_IRUSR, | ||
126 | }, | ||
127 | .size = 0, | ||
128 | .read = twl_sysfs_aen_read | ||
129 | }; | ||
130 | |||
131 | /* This function returns driver compatibility info through sysfs */ | ||
132 | static ssize_t twl_sysfs_compat_info(struct kobject *kobj, | ||
133 | struct bin_attribute *bin_attr, | ||
134 | char *outbuf, loff_t offset, size_t count) | ||
135 | { | ||
136 | struct device *dev = container_of(kobj, struct device, kobj); | ||
137 | struct Scsi_Host *shost = class_to_shost(dev); | ||
138 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)shost->hostdata; | ||
139 | unsigned long flags = 0; | ||
140 | ssize_t ret; | ||
141 | |||
142 | if (!capable(CAP_SYS_ADMIN)) | ||
143 | return -EACCES; | ||
144 | |||
145 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | ||
146 | ret = memory_read_from_buffer(outbuf, count, &offset, &tw_dev->tw_compat_info, sizeof(TW_Compatibility_Info)); | ||
147 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | ||
148 | |||
149 | return ret; | ||
150 | } /* End twl_sysfs_compat_info() */ | ||
151 | |||
152 | /* compat_info sysfs attribute initializer */ | ||
153 | static struct bin_attribute twl_sysfs_compat_info_attr = { | ||
154 | .attr = { | ||
155 | .name = "3ware_compat_info", | ||
156 | .mode = S_IRUSR, | ||
157 | }, | ||
158 | .size = 0, | ||
159 | .read = twl_sysfs_compat_info | ||
160 | }; | ||
161 | |||
162 | /* Show some statistics about the card */ | ||
163 | static ssize_t twl_show_stats(struct device *dev, | ||
164 | struct device_attribute *attr, char *buf) | ||
165 | { | ||
166 | struct Scsi_Host *host = class_to_shost(dev); | ||
167 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | ||
168 | unsigned long flags = 0; | ||
169 | ssize_t len; | ||
170 | |||
171 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | ||
172 | len = snprintf(buf, PAGE_SIZE, "3w-sas Driver version: %s\n" | ||
173 | "Current commands posted: %4d\n" | ||
174 | "Max commands posted: %4d\n" | ||
175 | "Last sgl length: %4d\n" | ||
176 | "Max sgl length: %4d\n" | ||
177 | "Last sector count: %4d\n" | ||
178 | "Max sector count: %4d\n" | ||
179 | "SCSI Host Resets: %4d\n" | ||
180 | "AEN's: %4d\n", | ||
181 | TW_DRIVER_VERSION, | ||
182 | tw_dev->posted_request_count, | ||
183 | tw_dev->max_posted_request_count, | ||
184 | tw_dev->sgl_entries, | ||
185 | tw_dev->max_sgl_entries, | ||
186 | tw_dev->sector_count, | ||
187 | tw_dev->max_sector_count, | ||
188 | tw_dev->num_resets, | ||
189 | tw_dev->aen_count); | ||
190 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | ||
191 | return len; | ||
192 | } /* End twl_show_stats() */ | ||
193 | |||
194 | /* This function will set a devices queue depth */ | ||
195 | static int twl_change_queue_depth(struct scsi_device *sdev, int queue_depth, | ||
196 | int reason) | ||
197 | { | ||
198 | if (reason != SCSI_QDEPTH_DEFAULT) | ||
199 | return -EOPNOTSUPP; | ||
200 | |||
201 | if (queue_depth > TW_Q_LENGTH-2) | ||
202 | queue_depth = TW_Q_LENGTH-2; | ||
203 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); | ||
204 | return queue_depth; | ||
205 | } /* End twl_change_queue_depth() */ | ||
206 | |||
207 | /* stats sysfs attribute initializer */ | ||
208 | static struct device_attribute twl_host_stats_attr = { | ||
209 | .attr = { | ||
210 | .name = "3ware_stats", | ||
211 | .mode = S_IRUGO, | ||
212 | }, | ||
213 | .show = twl_show_stats | ||
214 | }; | ||
215 | |||
216 | /* Host attributes initializer */ | ||
217 | static struct device_attribute *twl_host_attrs[] = { | ||
218 | &twl_host_stats_attr, | ||
219 | NULL, | ||
220 | }; | ||
221 | |||
222 | /* This function will look up an AEN severity string */ | ||
223 | static char *twl_aen_severity_lookup(unsigned char severity_code) | ||
224 | { | ||
225 | char *retval = NULL; | ||
226 | |||
227 | if ((severity_code < (unsigned char) TW_AEN_SEVERITY_ERROR) || | ||
228 | (severity_code > (unsigned char) TW_AEN_SEVERITY_DEBUG)) | ||
229 | goto out; | ||
230 | |||
231 | retval = twl_aen_severity_table[severity_code]; | ||
232 | out: | ||
233 | return retval; | ||
234 | } /* End twl_aen_severity_lookup() */ | ||
235 | |||
236 | /* This function will queue an event */ | ||
237 | static void twl_aen_queue_event(TW_Device_Extension *tw_dev, TW_Command_Apache_Header *header) | ||
238 | { | ||
239 | u32 local_time; | ||
240 | struct timeval time; | ||
241 | TW_Event *event; | ||
242 | unsigned short aen; | ||
243 | char host[16]; | ||
244 | char *error_str; | ||
245 | |||
246 | tw_dev->aen_count++; | ||
247 | |||
248 | /* Fill out event info */ | ||
249 | event = tw_dev->event_queue[tw_dev->error_index]; | ||
250 | |||
251 | host[0] = '\0'; | ||
252 | if (tw_dev->host) | ||
253 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | ||
254 | |||
255 | aen = le16_to_cpu(header->status_block.error); | ||
256 | memset(event, 0, sizeof(TW_Event)); | ||
257 | |||
258 | event->severity = TW_SEV_OUT(header->status_block.severity__reserved); | ||
259 | do_gettimeofday(&time); | ||
260 | local_time = (u32)(time.tv_sec - (sys_tz.tz_minuteswest * 60)); | ||
261 | event->time_stamp_sec = local_time; | ||
262 | event->aen_code = aen; | ||
263 | event->retrieved = TW_AEN_NOT_RETRIEVED; | ||
264 | event->sequence_id = tw_dev->error_sequence_id; | ||
265 | tw_dev->error_sequence_id++; | ||
266 | |||
267 | /* Check for embedded error string */ | ||
268 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc)+1]); | ||
269 | |||
270 | header->err_specific_desc[sizeof(header->err_specific_desc) - 1] = '\0'; | ||
271 | event->parameter_len = strlen(header->err_specific_desc); | ||
272 | memcpy(event->parameter_data, header->err_specific_desc, event->parameter_len + 1 + strlen(error_str)); | ||
273 | if (event->severity != TW_AEN_SEVERITY_DEBUG) | ||
274 | printk(KERN_WARNING "3w-sas:%s AEN: %s (0x%02X:0x%04X): %s:%s.\n", | ||
275 | host, | ||
276 | twl_aen_severity_lookup(TW_SEV_OUT(header->status_block.severity__reserved)), | ||
277 | TW_MESSAGE_SOURCE_CONTROLLER_EVENT, aen, error_str, | ||
278 | header->err_specific_desc); | ||
279 | else | ||
280 | tw_dev->aen_count--; | ||
281 | |||
282 | tw_dev->error_index = (tw_dev->error_index + 1 ) % TW_Q_LENGTH; | ||
283 | } /* End twl_aen_queue_event() */ | ||
284 | |||
285 | /* This function will attempt to post a command packet to the board */ | ||
286 | static int twl_post_command_packet(TW_Device_Extension *tw_dev, int request_id) | ||
287 | { | ||
288 | dma_addr_t command_que_value; | ||
289 | |||
290 | command_que_value = tw_dev->command_packet_phys[request_id]; | ||
291 | command_que_value += TW_COMMAND_OFFSET; | ||
292 | |||
293 | /* First write upper 4 bytes */ | ||
294 | writel((u32)((u64)command_que_value >> 32), TWL_HIBQPH_REG_ADDR(tw_dev)); | ||
295 | /* Then the lower 4 bytes */ | ||
296 | writel((u32)(command_que_value | TWL_PULL_MODE), TWL_HIBQPL_REG_ADDR(tw_dev)); | ||
297 | |||
298 | tw_dev->state[request_id] = TW_S_POSTED; | ||
299 | tw_dev->posted_request_count++; | ||
300 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) | ||
301 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | ||
302 | |||
303 | return 0; | ||
304 | } /* End twl_post_command_packet() */ | ||
305 | |||
306 | /* This function will perform a pci-dma mapping for a scatter gather list */ | ||
307 | static int twl_map_scsi_sg_data(TW_Device_Extension *tw_dev, int request_id) | ||
308 | { | ||
309 | int use_sg; | ||
310 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | ||
311 | |||
312 | use_sg = scsi_dma_map(cmd); | ||
313 | if (!use_sg) | ||
314 | return 0; | ||
315 | else if (use_sg < 0) { | ||
316 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1, "Failed to map scatter gather list"); | ||
317 | return 0; | ||
318 | } | ||
319 | |||
320 | cmd->SCp.phase = TW_PHASE_SGLIST; | ||
321 | cmd->SCp.have_data_in = use_sg; | ||
322 | |||
323 | return use_sg; | ||
324 | } /* End twl_map_scsi_sg_data() */ | ||
325 | |||
326 | /* This function hands scsi cdb's to the firmware */ | ||
327 | static int twl_scsiop_execute_scsi(TW_Device_Extension *tw_dev, int request_id, char *cdb, int use_sg, TW_SG_Entry_ISO *sglistarg) | ||
328 | { | ||
329 | TW_Command_Full *full_command_packet; | ||
330 | TW_Command_Apache *command_packet; | ||
331 | int i, sg_count; | ||
332 | struct scsi_cmnd *srb = NULL; | ||
333 | struct scatterlist *sglist = NULL, *sg; | ||
334 | int retval = 1; | ||
335 | |||
336 | if (tw_dev->srb[request_id]) { | ||
337 | srb = tw_dev->srb[request_id]; | ||
338 | if (scsi_sglist(srb)) | ||
339 | sglist = scsi_sglist(srb); | ||
340 | } | ||
341 | |||
342 | /* Initialize command packet */ | ||
343 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
344 | full_command_packet->header.header_desc.size_header = 128; | ||
345 | full_command_packet->header.status_block.error = 0; | ||
346 | full_command_packet->header.status_block.severity__reserved = 0; | ||
347 | |||
348 | command_packet = &full_command_packet->command.newcommand; | ||
349 | command_packet->status = 0; | ||
350 | command_packet->opcode__reserved = TW_OPRES_IN(0, TW_OP_EXECUTE_SCSI); | ||
351 | |||
352 | /* We forced 16 byte cdb use earlier */ | ||
353 | if (!cdb) | ||
354 | memcpy(command_packet->cdb, srb->cmnd, TW_MAX_CDB_LEN); | ||
355 | else | ||
356 | memcpy(command_packet->cdb, cdb, TW_MAX_CDB_LEN); | ||
357 | |||
358 | if (srb) { | ||
359 | command_packet->unit = srb->device->id; | ||
360 | command_packet->request_id__lunl = | ||
361 | cpu_to_le16(TW_REQ_LUN_IN(srb->device->lun, request_id)); | ||
362 | } else { | ||
363 | command_packet->request_id__lunl = | ||
364 | cpu_to_le16(TW_REQ_LUN_IN(0, request_id)); | ||
365 | command_packet->unit = 0; | ||
366 | } | ||
367 | |||
368 | command_packet->sgl_offset = 16; | ||
369 | |||
370 | if (!sglistarg) { | ||
371 | /* Map sglist from scsi layer to cmd packet */ | ||
372 | if (scsi_sg_count(srb)) { | ||
373 | sg_count = twl_map_scsi_sg_data(tw_dev, request_id); | ||
374 | if (sg_count == 0) | ||
375 | goto out; | ||
376 | |||
377 | scsi_for_each_sg(srb, sg, sg_count, i) { | ||
378 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sg_dma_address(sg)); | ||
379 | command_packet->sg_list[i].length = TW_CPU_TO_SGL(sg_dma_len(sg)); | ||
380 | } | ||
381 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN((srb->device->lun >> 4), scsi_sg_count(tw_dev->srb[request_id]))); | ||
382 | } | ||
383 | } else { | ||
384 | /* Internal cdb post */ | ||
385 | for (i = 0; i < use_sg; i++) { | ||
386 | command_packet->sg_list[i].address = TW_CPU_TO_SGL(sglistarg[i].address); | ||
387 | command_packet->sg_list[i].length = TW_CPU_TO_SGL(sglistarg[i].length); | ||
388 | } | ||
389 | command_packet->sgl_entries__lunh = cpu_to_le16(TW_REQ_LUN_IN(0, use_sg)); | ||
390 | } | ||
391 | |||
392 | /* Update some stats */ | ||
393 | if (srb) { | ||
394 | tw_dev->sector_count = scsi_bufflen(srb) / 512; | ||
395 | if (tw_dev->sector_count > tw_dev->max_sector_count) | ||
396 | tw_dev->max_sector_count = tw_dev->sector_count; | ||
397 | tw_dev->sgl_entries = scsi_sg_count(srb); | ||
398 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) | ||
399 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | ||
400 | } | ||
401 | |||
402 | /* Now post the command to the board */ | ||
403 | retval = twl_post_command_packet(tw_dev, request_id); | ||
404 | |||
405 | out: | ||
406 | return retval; | ||
407 | } /* End twl_scsiop_execute_scsi() */ | ||
408 | |||
409 | /* This function will read the aen queue from the isr */ | ||
410 | static int twl_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | ||
411 | { | ||
412 | char cdb[TW_MAX_CDB_LEN]; | ||
413 | TW_SG_Entry_ISO sglist[1]; | ||
414 | TW_Command_Full *full_command_packet; | ||
415 | int retval = 1; | ||
416 | |||
417 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
418 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | ||
419 | |||
420 | /* Initialize cdb */ | ||
421 | memset(&cdb, 0, TW_MAX_CDB_LEN); | ||
422 | cdb[0] = REQUEST_SENSE; /* opcode */ | ||
423 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | ||
424 | |||
425 | /* Initialize sglist */ | ||
426 | memset(&sglist, 0, sizeof(TW_SG_Entry_ISO)); | ||
427 | sglist[0].length = TW_SECTOR_SIZE; | ||
428 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | ||
429 | |||
430 | /* Mark internal command */ | ||
431 | tw_dev->srb[request_id] = NULL; | ||
432 | |||
433 | /* Now post the command packet */ | ||
434 | if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | ||
435 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x2, "Post failed while reading AEN queue"); | ||
436 | goto out; | ||
437 | } | ||
438 | retval = 0; | ||
439 | out: | ||
440 | return retval; | ||
441 | } /* End twl_aen_read_queue() */ | ||
442 | |||
443 | /* This function will sync firmware time with the host time */ | ||
444 | static void twl_aen_sync_time(TW_Device_Extension *tw_dev, int request_id) | ||
445 | { | ||
446 | u32 schedulertime; | ||
447 | struct timeval utc; | ||
448 | TW_Command_Full *full_command_packet; | ||
449 | TW_Command *command_packet; | ||
450 | TW_Param_Apache *param; | ||
451 | u32 local_time; | ||
452 | |||
453 | /* Fill out the command packet */ | ||
454 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
455 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | ||
456 | command_packet = &full_command_packet->command.oldcommand; | ||
457 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | ||
458 | command_packet->request_id = request_id; | ||
459 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); | ||
460 | command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE); | ||
461 | command_packet->size = TW_COMMAND_SIZE; | ||
462 | command_packet->byte6_offset.parameter_count = cpu_to_le16(1); | ||
463 | |||
464 | /* Setup the param */ | ||
465 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | ||
466 | memset(param, 0, TW_SECTOR_SIZE); | ||
467 | param->table_id = cpu_to_le16(TW_TIMEKEEP_TABLE | 0x8000); /* Controller time keep table */ | ||
468 | param->parameter_id = cpu_to_le16(0x3); /* SchedulerTime */ | ||
469 | param->parameter_size_bytes = cpu_to_le16(4); | ||
470 | |||
471 | /* Convert system time in UTC to local time seconds since last | ||
472 | Sunday 12:00AM */ | ||
473 | do_gettimeofday(&utc); | ||
474 | local_time = (u32)(utc.tv_sec - (sys_tz.tz_minuteswest * 60)); | ||
475 | schedulertime = local_time - (3 * 86400); | ||
476 | schedulertime = cpu_to_le32(schedulertime % 604800); | ||
477 | |||
478 | memcpy(param->data, &schedulertime, sizeof(u32)); | ||
479 | |||
480 | /* Mark internal command */ | ||
481 | tw_dev->srb[request_id] = NULL; | ||
482 | |||
483 | /* Now post the command */ | ||
484 | twl_post_command_packet(tw_dev, request_id); | ||
485 | } /* End twl_aen_sync_time() */ | ||
486 | |||
487 | /* This function will assign an available request id */ | ||
488 | static void twl_get_request_id(TW_Device_Extension *tw_dev, int *request_id) | ||
489 | { | ||
490 | *request_id = tw_dev->free_queue[tw_dev->free_head]; | ||
491 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; | ||
492 | tw_dev->state[*request_id] = TW_S_STARTED; | ||
493 | } /* End twl_get_request_id() */ | ||
494 | |||
495 | /* This function will free a request id */ | ||
496 | static void twl_free_request_id(TW_Device_Extension *tw_dev, int request_id) | ||
497 | { | ||
498 | tw_dev->free_queue[tw_dev->free_tail] = request_id; | ||
499 | tw_dev->state[request_id] = TW_S_FINISHED; | ||
500 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; | ||
501 | } /* End twl_free_request_id() */ | ||
502 | |||
503 | /* This function will complete an aen request from the isr */ | ||
504 | static int twl_aen_complete(TW_Device_Extension *tw_dev, int request_id) | ||
505 | { | ||
506 | TW_Command_Full *full_command_packet; | ||
507 | TW_Command *command_packet; | ||
508 | TW_Command_Apache_Header *header; | ||
509 | unsigned short aen; | ||
510 | int retval = 1; | ||
511 | |||
512 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | ||
513 | tw_dev->posted_request_count--; | ||
514 | aen = le16_to_cpu(header->status_block.error); | ||
515 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
516 | command_packet = &full_command_packet->command.oldcommand; | ||
517 | |||
518 | /* First check for internal completion of set param for time sync */ | ||
519 | if (TW_OP_OUT(command_packet->opcode__sgloffset) == TW_OP_SET_PARAM) { | ||
520 | /* Keep reading the queue in case there are more aen's */ | ||
521 | if (twl_aen_read_queue(tw_dev, request_id)) | ||
522 | goto out2; | ||
523 | else { | ||
524 | retval = 0; | ||
525 | goto out; | ||
526 | } | ||
527 | } | ||
528 | |||
529 | switch (aen) { | ||
530 | case TW_AEN_QUEUE_EMPTY: | ||
531 | /* Quit reading the queue if this is the last one */ | ||
532 | break; | ||
533 | case TW_AEN_SYNC_TIME_WITH_HOST: | ||
534 | twl_aen_sync_time(tw_dev, request_id); | ||
535 | retval = 0; | ||
536 | goto out; | ||
537 | default: | ||
538 | twl_aen_queue_event(tw_dev, header); | ||
539 | |||
540 | /* If there are more aen's, keep reading the queue */ | ||
541 | if (twl_aen_read_queue(tw_dev, request_id)) | ||
542 | goto out2; | ||
543 | else { | ||
544 | retval = 0; | ||
545 | goto out; | ||
546 | } | ||
547 | } | ||
548 | retval = 0; | ||
549 | out2: | ||
550 | tw_dev->state[request_id] = TW_S_COMPLETED; | ||
551 | twl_free_request_id(tw_dev, request_id); | ||
552 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | ||
553 | out: | ||
554 | return retval; | ||
555 | } /* End twl_aen_complete() */ | ||
556 | |||
557 | /* This function will poll for a response */ | ||
558 | static int twl_poll_response(TW_Device_Extension *tw_dev, int request_id, int seconds) | ||
559 | { | ||
560 | unsigned long before; | ||
561 | dma_addr_t mfa; | ||
562 | u32 regh, regl; | ||
563 | u32 response; | ||
564 | int retval = 1; | ||
565 | int found = 0; | ||
566 | |||
567 | before = jiffies; | ||
568 | |||
569 | while (!found) { | ||
570 | if (sizeof(dma_addr_t) > 4) { | ||
571 | regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev)); | ||
572 | regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev)); | ||
573 | mfa = ((u64)regh << 32) | regl; | ||
574 | } else | ||
575 | mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev)); | ||
576 | |||
577 | response = (u32)mfa; | ||
578 | |||
579 | if (TW_RESID_OUT(response) == request_id) | ||
580 | found = 1; | ||
581 | |||
582 | if (time_after(jiffies, before + HZ * seconds)) | ||
583 | goto out; | ||
584 | |||
585 | msleep(50); | ||
586 | } | ||
587 | retval = 0; | ||
588 | out: | ||
589 | return retval; | ||
590 | } /* End twl_poll_response() */ | ||
591 | |||
592 | /* This function will drain the aen queue */ | ||
593 | static int twl_aen_drain_queue(TW_Device_Extension *tw_dev, int no_check_reset) | ||
594 | { | ||
595 | int request_id = 0; | ||
596 | char cdb[TW_MAX_CDB_LEN]; | ||
597 | TW_SG_Entry_ISO sglist[1]; | ||
598 | int finished = 0, count = 0; | ||
599 | TW_Command_Full *full_command_packet; | ||
600 | TW_Command_Apache_Header *header; | ||
601 | unsigned short aen; | ||
602 | int first_reset = 0, queue = 0, retval = 1; | ||
603 | |||
604 | if (no_check_reset) | ||
605 | first_reset = 0; | ||
606 | else | ||
607 | first_reset = 1; | ||
608 | |||
609 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
610 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | ||
611 | |||
612 | /* Initialize cdb */ | ||
613 | memset(&cdb, 0, TW_MAX_CDB_LEN); | ||
614 | cdb[0] = REQUEST_SENSE; /* opcode */ | ||
615 | cdb[4] = TW_ALLOCATION_LENGTH; /* allocation length */ | ||
616 | |||
617 | /* Initialize sglist */ | ||
618 | memset(&sglist, 0, sizeof(TW_SG_Entry_ISO)); | ||
619 | sglist[0].length = TW_SECTOR_SIZE; | ||
620 | sglist[0].address = tw_dev->generic_buffer_phys[request_id]; | ||
621 | |||
622 | /* Mark internal command */ | ||
623 | tw_dev->srb[request_id] = NULL; | ||
624 | |||
625 | do { | ||
626 | /* Send command to the board */ | ||
627 | if (twl_scsiop_execute_scsi(tw_dev, request_id, cdb, 1, sglist)) { | ||
628 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x3, "Error posting request sense"); | ||
629 | goto out; | ||
630 | } | ||
631 | |||
632 | /* Now poll for completion */ | ||
633 | if (twl_poll_response(tw_dev, request_id, 30)) { | ||
634 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x4, "No valid response while draining AEN queue"); | ||
635 | tw_dev->posted_request_count--; | ||
636 | goto out; | ||
637 | } | ||
638 | |||
639 | tw_dev->posted_request_count--; | ||
640 | header = (TW_Command_Apache_Header *)tw_dev->generic_buffer_virt[request_id]; | ||
641 | aen = le16_to_cpu(header->status_block.error); | ||
642 | queue = 0; | ||
643 | count++; | ||
644 | |||
645 | switch (aen) { | ||
646 | case TW_AEN_QUEUE_EMPTY: | ||
647 | if (first_reset != 1) | ||
648 | goto out; | ||
649 | else | ||
650 | finished = 1; | ||
651 | break; | ||
652 | case TW_AEN_SOFT_RESET: | ||
653 | if (first_reset == 0) | ||
654 | first_reset = 1; | ||
655 | else | ||
656 | queue = 1; | ||
657 | break; | ||
658 | case TW_AEN_SYNC_TIME_WITH_HOST: | ||
659 | break; | ||
660 | default: | ||
661 | queue = 1; | ||
662 | } | ||
663 | |||
664 | /* Now queue an event info */ | ||
665 | if (queue) | ||
666 | twl_aen_queue_event(tw_dev, header); | ||
667 | } while ((finished == 0) && (count < TW_MAX_AEN_DRAIN)); | ||
668 | |||
669 | if (count == TW_MAX_AEN_DRAIN) | ||
670 | goto out; | ||
671 | |||
672 | retval = 0; | ||
673 | out: | ||
674 | tw_dev->state[request_id] = TW_S_INITIAL; | ||
675 | return retval; | ||
676 | } /* End twl_aen_drain_queue() */ | ||
677 | |||
678 | /* This function will allocate memory and check if it is correctly aligned */ | ||
679 | static int twl_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | ||
680 | { | ||
681 | int i; | ||
682 | dma_addr_t dma_handle; | ||
683 | unsigned long *cpu_addr; | ||
684 | int retval = 1; | ||
685 | |||
686 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); | ||
687 | if (!cpu_addr) { | ||
688 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x5, "Memory allocation failed"); | ||
689 | goto out; | ||
690 | } | ||
691 | |||
692 | memset(cpu_addr, 0, size*TW_Q_LENGTH); | ||
693 | |||
694 | for (i = 0; i < TW_Q_LENGTH; i++) { | ||
695 | switch(which) { | ||
696 | case 0: | ||
697 | tw_dev->command_packet_phys[i] = dma_handle+(i*size); | ||
698 | tw_dev->command_packet_virt[i] = (TW_Command_Full *)((unsigned char *)cpu_addr + (i*size)); | ||
699 | break; | ||
700 | case 1: | ||
701 | tw_dev->generic_buffer_phys[i] = dma_handle+(i*size); | ||
702 | tw_dev->generic_buffer_virt[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | ||
703 | break; | ||
704 | case 2: | ||
705 | tw_dev->sense_buffer_phys[i] = dma_handle+(i*size); | ||
706 | tw_dev->sense_buffer_virt[i] = (TW_Command_Apache_Header *)((unsigned char *)cpu_addr + (i*size)); | ||
707 | break; | ||
708 | } | ||
709 | } | ||
710 | retval = 0; | ||
711 | out: | ||
712 | return retval; | ||
713 | } /* End twl_allocate_memory() */ | ||
714 | |||
715 | /* This function will load the request id and various sgls for ioctls */ | ||
716 | 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) | ||
717 | { | ||
718 | TW_Command *oldcommand; | ||
719 | TW_Command_Apache *newcommand; | ||
720 | TW_SG_Entry_ISO *sgl; | ||
721 | unsigned int pae = 0; | ||
722 | |||
723 | if ((sizeof(long) < 8) && (sizeof(dma_addr_t) > 4)) | ||
724 | pae = 1; | ||
725 | |||
726 | if (TW_OP_OUT(full_command_packet->command.newcommand.opcode__reserved) == TW_OP_EXECUTE_SCSI) { | ||
727 | newcommand = &full_command_packet->command.newcommand; | ||
728 | newcommand->request_id__lunl = | ||
729 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->request_id__lunl), request_id)); | ||
730 | if (length) { | ||
731 | newcommand->sg_list[0].address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); | ||
732 | newcommand->sg_list[0].length = TW_CPU_TO_SGL(length); | ||
733 | } | ||
734 | newcommand->sgl_entries__lunh = | ||
735 | cpu_to_le16(TW_REQ_LUN_IN(TW_LUN_OUT(newcommand->sgl_entries__lunh), length ? 1 : 0)); | ||
736 | } else { | ||
737 | oldcommand = &full_command_packet->command.oldcommand; | ||
738 | oldcommand->request_id = request_id; | ||
739 | |||
740 | if (TW_SGL_OUT(oldcommand->opcode__sgloffset)) { | ||
741 | /* Load the sg list */ | ||
742 | sgl = (TW_SG_Entry_ISO *)((u32 *)oldcommand+oldcommand->size - (sizeof(TW_SG_Entry_ISO)/4) + pae + (sizeof(dma_addr_t) > 4 ? 1 : 0)); | ||
743 | sgl->address = TW_CPU_TO_SGL(dma_handle + sizeof(TW_Ioctl_Buf_Apache) - 1); | ||
744 | sgl->length = TW_CPU_TO_SGL(length); | ||
745 | oldcommand->size += pae; | ||
746 | oldcommand->size += sizeof(dma_addr_t) > 4 ? 1 : 0; | ||
747 | } | ||
748 | } | ||
749 | } /* End twl_load_sgl() */ | ||
750 | |||
751 | /* This function handles ioctl for the character device | ||
752 | This interface is used by smartmontools open source software */ | ||
753 | static int twl_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | ||
754 | { | ||
755 | long timeout; | ||
756 | unsigned long *cpu_addr, data_buffer_length_adjusted = 0, flags = 0; | ||
757 | dma_addr_t dma_handle; | ||
758 | int request_id = 0; | ||
759 | TW_Ioctl_Driver_Command driver_command; | ||
760 | TW_Ioctl_Buf_Apache *tw_ioctl; | ||
761 | TW_Command_Full *full_command_packet; | ||
762 | TW_Device_Extension *tw_dev = twl_device_extension_list[iminor(inode)]; | ||
763 | int retval = -EFAULT; | ||
764 | void __user *argp = (void __user *)arg; | ||
765 | |||
766 | /* Only let one of these through at a time */ | ||
767 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { | ||
768 | retval = -EINTR; | ||
769 | goto out; | ||
770 | } | ||
771 | |||
772 | /* First copy down the driver command */ | ||
773 | if (copy_from_user(&driver_command, argp, sizeof(TW_Ioctl_Driver_Command))) | ||
774 | goto out2; | ||
775 | |||
776 | /* Check data buffer size */ | ||
777 | if (driver_command.buffer_length > TW_MAX_SECTORS * 2048) { | ||
778 | retval = -EINVAL; | ||
779 | goto out2; | ||
780 | } | ||
781 | |||
782 | /* Hardware can only do multiple of 512 byte transfers */ | ||
783 | data_buffer_length_adjusted = (driver_command.buffer_length + 511) & ~511; | ||
784 | |||
785 | /* Now allocate ioctl buf memory */ | ||
786 | 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); | ||
787 | if (!cpu_addr) { | ||
788 | retval = -ENOMEM; | ||
789 | goto out2; | ||
790 | } | ||
791 | |||
792 | tw_ioctl = (TW_Ioctl_Buf_Apache *)cpu_addr; | ||
793 | |||
794 | /* Now copy down the entire ioctl */ | ||
795 | if (copy_from_user(tw_ioctl, argp, driver_command.buffer_length + sizeof(TW_Ioctl_Buf_Apache) - 1)) | ||
796 | goto out3; | ||
797 | |||
798 | /* See which ioctl we are doing */ | ||
799 | switch (cmd) { | ||
800 | case TW_IOCTL_FIRMWARE_PASS_THROUGH: | ||
801 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | ||
802 | twl_get_request_id(tw_dev, &request_id); | ||
803 | |||
804 | /* Flag internal command */ | ||
805 | tw_dev->srb[request_id] = NULL; | ||
806 | |||
807 | /* Flag chrdev ioctl */ | ||
808 | tw_dev->chrdev_request_id = request_id; | ||
809 | |||
810 | full_command_packet = (TW_Command_Full *)&tw_ioctl->firmware_command; | ||
811 | |||
812 | /* Load request id and sglist for both command types */ | ||
813 | twl_load_sgl(tw_dev, full_command_packet, request_id, dma_handle, data_buffer_length_adjusted); | ||
814 | |||
815 | memcpy(tw_dev->command_packet_virt[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command_Full)); | ||
816 | |||
817 | /* Now post the command packet to the controller */ | ||
818 | twl_post_command_packet(tw_dev, request_id); | ||
819 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | ||
820 | |||
821 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | ||
822 | |||
823 | /* Now wait for command to complete */ | ||
824 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | ||
825 | |||
826 | /* We timed out, and didn't get an interrupt */ | ||
827 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | ||
828 | /* Now we need to reset the board */ | ||
829 | printk(KERN_WARNING "3w-sas: scsi%d: WARNING: (0x%02X:0x%04X): Character ioctl (0x%x) timed out, resetting card.\n", | ||
830 | tw_dev->host->host_no, TW_DRIVER, 0x6, | ||
831 | cmd); | ||
832 | retval = -EIO; | ||
833 | twl_reset_device_extension(tw_dev, 1); | ||
834 | goto out3; | ||
835 | } | ||
836 | |||
837 | /* Now copy in the command packet response */ | ||
838 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virt[request_id], sizeof(TW_Command_Full)); | ||
839 | |||
840 | /* Now complete the io */ | ||
841 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | ||
842 | tw_dev->posted_request_count--; | ||
843 | tw_dev->state[request_id] = TW_S_COMPLETED; | ||
844 | twl_free_request_id(tw_dev, request_id); | ||
845 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | ||
846 | break; | ||
847 | default: | ||
848 | retval = -ENOTTY; | ||
849 | goto out3; | ||
850 | } | ||
851 | |||
852 | /* Now copy the entire response to userspace */ | ||
853 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_Ioctl_Buf_Apache) + driver_command.buffer_length - 1) == 0) | ||
854 | retval = 0; | ||
855 | out3: | ||
856 | /* Now free ioctl buf memory */ | ||
857 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_Ioctl_Buf_Apache) - 1, cpu_addr, dma_handle); | ||
858 | out2: | ||
859 | mutex_unlock(&tw_dev->ioctl_lock); | ||
860 | out: | ||
861 | return retval; | ||
862 | } /* End twl_chrdev_ioctl() */ | ||
863 | |||
864 | /* This function handles open for the character device */ | ||
865 | static int twl_chrdev_open(struct inode *inode, struct file *file) | ||
866 | { | ||
867 | unsigned int minor_number; | ||
868 | int retval = -ENODEV; | ||
869 | |||
870 | if (!capable(CAP_SYS_ADMIN)) { | ||
871 | retval = -EACCES; | ||
872 | goto out; | ||
873 | } | ||
874 | |||
875 | cycle_kernel_lock(); | ||
876 | minor_number = iminor(inode); | ||
877 | if (minor_number >= twl_device_extension_count) | ||
878 | goto out; | ||
879 | retval = 0; | ||
880 | out: | ||
881 | return retval; | ||
882 | } /* End twl_chrdev_open() */ | ||
883 | |||
884 | /* File operations struct for character device */ | ||
885 | static const struct file_operations twl_fops = { | ||
886 | .owner = THIS_MODULE, | ||
887 | .ioctl = twl_chrdev_ioctl, | ||
888 | .open = twl_chrdev_open, | ||
889 | .release = NULL | ||
890 | }; | ||
891 | |||
892 | /* This function passes sense data from firmware to scsi layer */ | ||
893 | static int twl_fill_sense(TW_Device_Extension *tw_dev, int i, int request_id, int copy_sense, int print_host) | ||
894 | { | ||
895 | TW_Command_Apache_Header *header; | ||
896 | TW_Command_Full *full_command_packet; | ||
897 | unsigned short error; | ||
898 | char *error_str; | ||
899 | int retval = 1; | ||
900 | |||
901 | header = tw_dev->sense_buffer_virt[i]; | ||
902 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
903 | |||
904 | /* Get embedded firmware error string */ | ||
905 | error_str = &(header->err_specific_desc[strlen(header->err_specific_desc) + 1]); | ||
906 | |||
907 | /* Don't print error for Logical unit not supported during rollcall */ | ||
908 | error = le16_to_cpu(header->status_block.error); | ||
909 | if ((error != TW_ERROR_LOGICAL_UNIT_NOT_SUPPORTED) && (error != TW_ERROR_UNIT_OFFLINE) && (error != TW_ERROR_INVALID_FIELD_IN_CDB)) { | ||
910 | if (print_host) | ||
911 | printk(KERN_WARNING "3w-sas: scsi%d: ERROR: (0x%02X:0x%04X): %s:%s.\n", | ||
912 | tw_dev->host->host_no, | ||
913 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | ||
914 | header->status_block.error, | ||
915 | error_str, | ||
916 | header->err_specific_desc); | ||
917 | else | ||
918 | printk(KERN_WARNING "3w-sas: ERROR: (0x%02X:0x%04X): %s:%s.\n", | ||
919 | TW_MESSAGE_SOURCE_CONTROLLER_ERROR, | ||
920 | header->status_block.error, | ||
921 | error_str, | ||
922 | header->err_specific_desc); | ||
923 | } | ||
924 | |||
925 | if (copy_sense) { | ||
926 | memcpy(tw_dev->srb[request_id]->sense_buffer, header->sense_data, TW_SENSE_DATA_LENGTH); | ||
927 | tw_dev->srb[request_id]->result = (full_command_packet->command.newcommand.status << 1); | ||
928 | goto out; | ||
929 | } | ||
930 | out: | ||
931 | return retval; | ||
932 | } /* End twl_fill_sense() */ | ||
933 | |||
934 | /* This function will free up device extension resources */ | ||
935 | static void twl_free_device_extension(TW_Device_Extension *tw_dev) | ||
936 | { | ||
937 | if (tw_dev->command_packet_virt[0]) | ||
938 | pci_free_consistent(tw_dev->tw_pci_dev, | ||
939 | sizeof(TW_Command_Full)*TW_Q_LENGTH, | ||
940 | tw_dev->command_packet_virt[0], | ||
941 | tw_dev->command_packet_phys[0]); | ||
942 | |||
943 | if (tw_dev->generic_buffer_virt[0]) | ||
944 | pci_free_consistent(tw_dev->tw_pci_dev, | ||
945 | TW_SECTOR_SIZE*TW_Q_LENGTH, | ||
946 | tw_dev->generic_buffer_virt[0], | ||
947 | tw_dev->generic_buffer_phys[0]); | ||
948 | |||
949 | if (tw_dev->sense_buffer_virt[0]) | ||
950 | pci_free_consistent(tw_dev->tw_pci_dev, | ||
951 | sizeof(TW_Command_Apache_Header)* | ||
952 | TW_Q_LENGTH, | ||
953 | tw_dev->sense_buffer_virt[0], | ||
954 | tw_dev->sense_buffer_phys[0]); | ||
955 | |||
956 | kfree(tw_dev->event_queue[0]); | ||
957 | } /* End twl_free_device_extension() */ | ||
958 | |||
959 | /* This function will get parameter table entries from the firmware */ | ||
960 | static void *twl_get_param(TW_Device_Extension *tw_dev, int request_id, int table_id, int parameter_id, int parameter_size_bytes) | ||
961 | { | ||
962 | TW_Command_Full *full_command_packet; | ||
963 | TW_Command *command_packet; | ||
964 | TW_Param_Apache *param; | ||
965 | void *retval = NULL; | ||
966 | |||
967 | /* Setup the command packet */ | ||
968 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
969 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | ||
970 | command_packet = &full_command_packet->command.oldcommand; | ||
971 | |||
972 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | ||
973 | command_packet->size = TW_COMMAND_SIZE; | ||
974 | command_packet->request_id = request_id; | ||
975 | command_packet->byte6_offset.block_count = cpu_to_le16(1); | ||
976 | |||
977 | /* Now setup the param */ | ||
978 | param = (TW_Param_Apache *)tw_dev->generic_buffer_virt[request_id]; | ||
979 | memset(param, 0, TW_SECTOR_SIZE); | ||
980 | param->table_id = cpu_to_le16(table_id | 0x8000); | ||
981 | param->parameter_id = cpu_to_le16(parameter_id); | ||
982 | param->parameter_size_bytes = cpu_to_le16(parameter_size_bytes); | ||
983 | |||
984 | command_packet->byte8_offset.param.sgl[0].address = TW_CPU_TO_SGL(tw_dev->generic_buffer_phys[request_id]); | ||
985 | command_packet->byte8_offset.param.sgl[0].length = TW_CPU_TO_SGL(TW_SECTOR_SIZE); | ||
986 | |||
987 | /* Post the command packet to the board */ | ||
988 | twl_post_command_packet(tw_dev, request_id); | ||
989 | |||
990 | /* Poll for completion */ | ||
991 | if (twl_poll_response(tw_dev, request_id, 30)) | ||
992 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x7, "No valid response during get param") | ||
993 | else | ||
994 | retval = (void *)&(param->data[0]); | ||
995 | |||
996 | tw_dev->posted_request_count--; | ||
997 | tw_dev->state[request_id] = TW_S_INITIAL; | ||
998 | |||
999 | return retval; | ||
1000 | } /* End twl_get_param() */ | ||
1001 | |||
1002 | /* This function will send an initconnection command to controller */ | ||
1003 | static int twl_initconnection(TW_Device_Extension *tw_dev, int message_credits, | ||
1004 | u32 set_features, unsigned short current_fw_srl, | ||
1005 | unsigned short current_fw_arch_id, | ||
1006 | unsigned short current_fw_branch, | ||
1007 | unsigned short current_fw_build, | ||
1008 | unsigned short *fw_on_ctlr_srl, | ||
1009 | unsigned short *fw_on_ctlr_arch_id, | ||
1010 | unsigned short *fw_on_ctlr_branch, | ||
1011 | unsigned short *fw_on_ctlr_build, | ||
1012 | u32 *init_connect_result) | ||
1013 | { | ||
1014 | TW_Command_Full *full_command_packet; | ||
1015 | TW_Initconnect *tw_initconnect; | ||
1016 | int request_id = 0, retval = 1; | ||
1017 | |||
1018 | /* Initialize InitConnection command packet */ | ||
1019 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
1020 | memset(full_command_packet, 0, sizeof(TW_Command_Full)); | ||
1021 | full_command_packet->header.header_desc.size_header = 128; | ||
1022 | |||
1023 | tw_initconnect = (TW_Initconnect *)&full_command_packet->command.oldcommand; | ||
1024 | tw_initconnect->opcode__reserved = TW_OPRES_IN(0, TW_OP_INIT_CONNECTION); | ||
1025 | tw_initconnect->request_id = request_id; | ||
1026 | tw_initconnect->message_credits = cpu_to_le16(message_credits); | ||
1027 | tw_initconnect->features = set_features; | ||
1028 | |||
1029 | /* Turn on 64-bit sgl support if we need to */ | ||
1030 | tw_initconnect->features |= sizeof(dma_addr_t) > 4 ? 1 : 0; | ||
1031 | |||
1032 | tw_initconnect->features = cpu_to_le32(tw_initconnect->features); | ||
1033 | |||
1034 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | ||
1035 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE_EXTENDED; | ||
1036 | tw_initconnect->fw_srl = cpu_to_le16(current_fw_srl); | ||
1037 | tw_initconnect->fw_arch_id = cpu_to_le16(current_fw_arch_id); | ||
1038 | tw_initconnect->fw_branch = cpu_to_le16(current_fw_branch); | ||
1039 | tw_initconnect->fw_build = cpu_to_le16(current_fw_build); | ||
1040 | } else | ||
1041 | tw_initconnect->size = TW_INIT_COMMAND_PACKET_SIZE; | ||
1042 | |||
1043 | /* Send command packet to the board */ | ||
1044 | twl_post_command_packet(tw_dev, request_id); | ||
1045 | |||
1046 | /* Poll for completion */ | ||
1047 | if (twl_poll_response(tw_dev, request_id, 30)) { | ||
1048 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x8, "No valid response during init connection"); | ||
1049 | } else { | ||
1050 | if (set_features & TW_EXTENDED_INIT_CONNECT) { | ||
1051 | *fw_on_ctlr_srl = le16_to_cpu(tw_initconnect->fw_srl); | ||
1052 | *fw_on_ctlr_arch_id = le16_to_cpu(tw_initconnect->fw_arch_id); | ||
1053 | *fw_on_ctlr_branch = le16_to_cpu(tw_initconnect->fw_branch); | ||
1054 | *fw_on_ctlr_build = le16_to_cpu(tw_initconnect->fw_build); | ||
1055 | *init_connect_result = le32_to_cpu(tw_initconnect->result); | ||
1056 | } | ||
1057 | retval = 0; | ||
1058 | } | ||
1059 | |||
1060 | tw_dev->posted_request_count--; | ||
1061 | tw_dev->state[request_id] = TW_S_INITIAL; | ||
1062 | |||
1063 | return retval; | ||
1064 | } /* End twl_initconnection() */ | ||
1065 | |||
1066 | /* This function will initialize the fields of a device extension */ | ||
1067 | static int twl_initialize_device_extension(TW_Device_Extension *tw_dev) | ||
1068 | { | ||
1069 | int i, retval = 1; | ||
1070 | |||
1071 | /* Initialize command packet buffers */ | ||
1072 | if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Full), 0)) { | ||
1073 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x9, "Command packet memory allocation failed"); | ||
1074 | goto out; | ||
1075 | } | ||
1076 | |||
1077 | /* Initialize generic buffer */ | ||
1078 | if (twl_allocate_memory(tw_dev, TW_SECTOR_SIZE, 1)) { | ||
1079 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xa, "Generic memory allocation failed"); | ||
1080 | goto out; | ||
1081 | } | ||
1082 | |||
1083 | /* Allocate sense buffers */ | ||
1084 | if (twl_allocate_memory(tw_dev, sizeof(TW_Command_Apache_Header), 2)) { | ||
1085 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xb, "Sense buffer allocation failed"); | ||
1086 | goto out; | ||
1087 | } | ||
1088 | |||
1089 | /* Allocate event info space */ | ||
1090 | tw_dev->event_queue[0] = kcalloc(TW_Q_LENGTH, sizeof(TW_Event), GFP_KERNEL); | ||
1091 | if (!tw_dev->event_queue[0]) { | ||
1092 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xc, "Event info memory allocation failed"); | ||
1093 | goto out; | ||
1094 | } | ||
1095 | |||
1096 | for (i = 0; i < TW_Q_LENGTH; i++) { | ||
1097 | tw_dev->event_queue[i] = (TW_Event *)((unsigned char *)tw_dev->event_queue[0] + (i * sizeof(TW_Event))); | ||
1098 | tw_dev->free_queue[i] = i; | ||
1099 | tw_dev->state[i] = TW_S_INITIAL; | ||
1100 | } | ||
1101 | |||
1102 | tw_dev->free_head = TW_Q_START; | ||
1103 | tw_dev->free_tail = TW_Q_START; | ||
1104 | tw_dev->error_sequence_id = 1; | ||
1105 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | ||
1106 | |||
1107 | mutex_init(&tw_dev->ioctl_lock); | ||
1108 | init_waitqueue_head(&tw_dev->ioctl_wqueue); | ||
1109 | |||
1110 | retval = 0; | ||
1111 | out: | ||
1112 | return retval; | ||
1113 | } /* End twl_initialize_device_extension() */ | ||
1114 | |||
1115 | /* This function will perform a pci-dma unmap */ | ||
1116 | static void twl_unmap_scsi_data(TW_Device_Extension *tw_dev, int request_id) | ||
1117 | { | ||
1118 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | ||
1119 | |||
1120 | if (cmd->SCp.phase == TW_PHASE_SGLIST) | ||
1121 | scsi_dma_unmap(cmd); | ||
1122 | } /* End twl_unmap_scsi_data() */ | ||
1123 | |||
1124 | /* This function will handle attention interrupts */ | ||
1125 | static int twl_handle_attention_interrupt(TW_Device_Extension *tw_dev) | ||
1126 | { | ||
1127 | int retval = 1; | ||
1128 | u32 request_id, doorbell; | ||
1129 | |||
1130 | /* Read doorbell status */ | ||
1131 | doorbell = readl(TWL_HOBDB_REG_ADDR(tw_dev)); | ||
1132 | |||
1133 | /* Check for controller errors */ | ||
1134 | if (doorbell & TWL_DOORBELL_CONTROLLER_ERROR) { | ||
1135 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xd, "Microcontroller Error: clearing"); | ||
1136 | goto out; | ||
1137 | } | ||
1138 | |||
1139 | /* Check if we need to perform an AEN drain */ | ||
1140 | if (doorbell & TWL_DOORBELL_ATTENTION_INTERRUPT) { | ||
1141 | if (!(test_and_set_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags))) { | ||
1142 | twl_get_request_id(tw_dev, &request_id); | ||
1143 | if (twl_aen_read_queue(tw_dev, request_id)) { | ||
1144 | tw_dev->state[request_id] = TW_S_COMPLETED; | ||
1145 | twl_free_request_id(tw_dev, request_id); | ||
1146 | clear_bit(TW_IN_ATTENTION_LOOP, &tw_dev->flags); | ||
1147 | } | ||
1148 | } | ||
1149 | } | ||
1150 | |||
1151 | retval = 0; | ||
1152 | out: | ||
1153 | /* Clear doorbell interrupt */ | ||
1154 | TWL_CLEAR_DB_INTERRUPT(tw_dev); | ||
1155 | |||
1156 | /* Make sure the clear was flushed by reading it back */ | ||
1157 | readl(TWL_HOBDBC_REG_ADDR(tw_dev)); | ||
1158 | |||
1159 | return retval; | ||
1160 | } /* End twl_handle_attention_interrupt() */ | ||
1161 | |||
1162 | /* Interrupt service routine */ | ||
1163 | static irqreturn_t twl_interrupt(int irq, void *dev_instance) | ||
1164 | { | ||
1165 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; | ||
1166 | int i, handled = 0, error = 0; | ||
1167 | dma_addr_t mfa = 0; | ||
1168 | u32 reg, regl, regh, response, request_id = 0; | ||
1169 | struct scsi_cmnd *cmd; | ||
1170 | TW_Command_Full *full_command_packet; | ||
1171 | |||
1172 | spin_lock(tw_dev->host->host_lock); | ||
1173 | |||
1174 | /* Read host interrupt status */ | ||
1175 | reg = readl(TWL_HISTAT_REG_ADDR(tw_dev)); | ||
1176 | |||
1177 | /* Check if this is our interrupt, otherwise bail */ | ||
1178 | if (!(reg & TWL_HISTATUS_VALID_INTERRUPT)) | ||
1179 | goto twl_interrupt_bail; | ||
1180 | |||
1181 | handled = 1; | ||
1182 | |||
1183 | /* If we are resetting, bail */ | ||
1184 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) | ||
1185 | goto twl_interrupt_bail; | ||
1186 | |||
1187 | /* Attention interrupt */ | ||
1188 | if (reg & TWL_HISTATUS_ATTENTION_INTERRUPT) { | ||
1189 | if (twl_handle_attention_interrupt(tw_dev)) { | ||
1190 | TWL_MASK_INTERRUPTS(tw_dev); | ||
1191 | goto twl_interrupt_bail; | ||
1192 | } | ||
1193 | } | ||
1194 | |||
1195 | /* Response interrupt */ | ||
1196 | while (reg & TWL_HISTATUS_RESPONSE_INTERRUPT) { | ||
1197 | if (sizeof(dma_addr_t) > 4) { | ||
1198 | regh = readl(TWL_HOBQPH_REG_ADDR(tw_dev)); | ||
1199 | regl = readl(TWL_HOBQPL_REG_ADDR(tw_dev)); | ||
1200 | mfa = ((u64)regh << 32) | regl; | ||
1201 | } else | ||
1202 | mfa = readl(TWL_HOBQPL_REG_ADDR(tw_dev)); | ||
1203 | |||
1204 | error = 0; | ||
1205 | response = (u32)mfa; | ||
1206 | |||
1207 | /* Check for command packet error */ | ||
1208 | if (!TW_NOTMFA_OUT(response)) { | ||
1209 | for (i=0;i<TW_Q_LENGTH;i++) { | ||
1210 | if (tw_dev->sense_buffer_phys[i] == mfa) { | ||
1211 | request_id = le16_to_cpu(tw_dev->sense_buffer_virt[i]->header_desc.request_id); | ||
1212 | if (tw_dev->srb[request_id] != NULL) | ||
1213 | error = twl_fill_sense(tw_dev, i, request_id, 1, 1); | ||
1214 | else { | ||
1215 | /* Skip ioctl error prints */ | ||
1216 | if (request_id != tw_dev->chrdev_request_id) | ||
1217 | error = twl_fill_sense(tw_dev, i, request_id, 0, 1); | ||
1218 | else | ||
1219 | memcpy(tw_dev->command_packet_virt[request_id], tw_dev->sense_buffer_virt[i], sizeof(TW_Command_Apache_Header)); | ||
1220 | } | ||
1221 | |||
1222 | /* Now re-post the sense buffer */ | ||
1223 | writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev)); | ||
1224 | writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev)); | ||
1225 | break; | ||
1226 | } | ||
1227 | } | ||
1228 | } else | ||
1229 | request_id = TW_RESID_OUT(response); | ||
1230 | |||
1231 | full_command_packet = tw_dev->command_packet_virt[request_id]; | ||
1232 | |||
1233 | /* Check for correct state */ | ||
1234 | if (tw_dev->state[request_id] != TW_S_POSTED) { | ||
1235 | if (tw_dev->srb[request_id] != NULL) { | ||
1236 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xe, "Received a request id that wasn't posted"); | ||
1237 | TWL_MASK_INTERRUPTS(tw_dev); | ||
1238 | goto twl_interrupt_bail; | ||
1239 | } | ||
1240 | } | ||
1241 | |||
1242 | /* Check for internal command completion */ | ||
1243 | if (tw_dev->srb[request_id] == NULL) { | ||
1244 | if (request_id != tw_dev->chrdev_request_id) { | ||
1245 | if (twl_aen_complete(tw_dev, request_id)) | ||
1246 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0xf, "Error completing AEN during attention interrupt"); | ||
1247 | } else { | ||
1248 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | ||
1249 | wake_up(&tw_dev->ioctl_wqueue); | ||
1250 | } | ||
1251 | } else { | ||
1252 | cmd = tw_dev->srb[request_id]; | ||
1253 | |||
1254 | if (!error) | ||
1255 | cmd->result = (DID_OK << 16); | ||
1256 | |||
1257 | /* Report residual bytes for single sgl */ | ||
1258 | if ((scsi_sg_count(cmd) <= 1) && (full_command_packet->command.newcommand.status == 0)) { | ||
1259 | if (full_command_packet->command.newcommand.sg_list[0].length < scsi_bufflen(tw_dev->srb[request_id])) | ||
1260 | scsi_set_resid(cmd, scsi_bufflen(cmd) - full_command_packet->command.newcommand.sg_list[0].length); | ||
1261 | } | ||
1262 | |||
1263 | /* Now complete the io */ | ||
1264 | tw_dev->state[request_id] = TW_S_COMPLETED; | ||
1265 | twl_free_request_id(tw_dev, request_id); | ||
1266 | tw_dev->posted_request_count--; | ||
1267 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | ||
1268 | twl_unmap_scsi_data(tw_dev, request_id); | ||
1269 | } | ||
1270 | |||
1271 | /* Check for another response interrupt */ | ||
1272 | reg = readl(TWL_HISTAT_REG_ADDR(tw_dev)); | ||
1273 | } | ||
1274 | |||
1275 | twl_interrupt_bail: | ||
1276 | spin_unlock(tw_dev->host->host_lock); | ||
1277 | return IRQ_RETVAL(handled); | ||
1278 | } /* End twl_interrupt() */ | ||
1279 | |||
1280 | /* This function will poll for a register change */ | ||
1281 | static int twl_poll_register(TW_Device_Extension *tw_dev, void *reg, u32 value, u32 result, int seconds) | ||
1282 | { | ||
1283 | unsigned long before; | ||
1284 | int retval = 1; | ||
1285 | u32 reg_value; | ||
1286 | |||
1287 | reg_value = readl(reg); | ||
1288 | before = jiffies; | ||
1289 | |||
1290 | while ((reg_value & value) != result) { | ||
1291 | reg_value = readl(reg); | ||
1292 | if (time_after(jiffies, before + HZ * seconds)) | ||
1293 | goto out; | ||
1294 | msleep(50); | ||
1295 | } | ||
1296 | retval = 0; | ||
1297 | out: | ||
1298 | return retval; | ||
1299 | } /* End twl_poll_register() */ | ||
1300 | |||
1301 | /* This function will reset a controller */ | ||
1302 | static int twl_reset_sequence(TW_Device_Extension *tw_dev, int soft_reset) | ||
1303 | { | ||
1304 | int retval = 1; | ||
1305 | int i = 0; | ||
1306 | u32 status = 0; | ||
1307 | unsigned short fw_on_ctlr_srl = 0, fw_on_ctlr_arch_id = 0; | ||
1308 | unsigned short fw_on_ctlr_branch = 0, fw_on_ctlr_build = 0; | ||
1309 | u32 init_connect_result = 0; | ||
1310 | int tries = 0; | ||
1311 | int do_soft_reset = soft_reset; | ||
1312 | |||
1313 | while (tries < TW_MAX_RESET_TRIES) { | ||
1314 | /* Do a soft reset if one is needed */ | ||
1315 | if (do_soft_reset) { | ||
1316 | TWL_SOFT_RESET(tw_dev); | ||
1317 | |||
1318 | /* Make sure controller is in a good state */ | ||
1319 | if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, 0x0, 30)) { | ||
1320 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x10, "Controller never went non-ready during reset sequence"); | ||
1321 | tries++; | ||
1322 | continue; | ||
1323 | } | ||
1324 | if (twl_poll_register(tw_dev, TWL_SCRPD3_REG_ADDR(tw_dev), TWL_CONTROLLER_READY, TWL_CONTROLLER_READY, 60)) { | ||
1325 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x11, "Controller not ready during reset sequence"); | ||
1326 | tries++; | ||
1327 | continue; | ||
1328 | } | ||
1329 | } | ||
1330 | |||
1331 | /* Initconnect */ | ||
1332 | if (twl_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS, | ||
1333 | TW_EXTENDED_INIT_CONNECT, TW_CURRENT_DRIVER_SRL, | ||
1334 | TW_9750_ARCH_ID, TW_CURRENT_DRIVER_BRANCH, | ||
1335 | TW_CURRENT_DRIVER_BUILD, &fw_on_ctlr_srl, | ||
1336 | &fw_on_ctlr_arch_id, &fw_on_ctlr_branch, | ||
1337 | &fw_on_ctlr_build, &init_connect_result)) { | ||
1338 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x12, "Initconnection failed while checking SRL"); | ||
1339 | do_soft_reset = 1; | ||
1340 | tries++; | ||
1341 | continue; | ||
1342 | } | ||
1343 | |||
1344 | /* Load sense buffers */ | ||
1345 | while (i < TW_Q_LENGTH) { | ||
1346 | writel((u32)((u64)tw_dev->sense_buffer_phys[i] >> 32), TWL_HOBQPH_REG_ADDR(tw_dev)); | ||
1347 | writel((u32)tw_dev->sense_buffer_phys[i], TWL_HOBQPL_REG_ADDR(tw_dev)); | ||
1348 | |||
1349 | /* Check status for over-run after each write */ | ||
1350 | status = readl(TWL_STATUS_REG_ADDR(tw_dev)); | ||
1351 | if (!(status & TWL_STATUS_OVERRUN_SUBMIT)) | ||
1352 | i++; | ||
1353 | } | ||
1354 | |||
1355 | /* Now check status */ | ||
1356 | status = readl(TWL_STATUS_REG_ADDR(tw_dev)); | ||
1357 | if (status) { | ||
1358 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x13, "Bad controller status after loading sense buffers"); | ||
1359 | do_soft_reset = 1; | ||
1360 | tries++; | ||
1361 | continue; | ||
1362 | } | ||
1363 | |||
1364 | /* Drain the AEN queue */ | ||
1365 | if (twl_aen_drain_queue(tw_dev, soft_reset)) { | ||
1366 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x14, "AEN drain failed during reset sequence"); | ||
1367 | do_soft_reset = 1; | ||
1368 | tries++; | ||
1369 | continue; | ||
1370 | } | ||
1371 | |||
1372 | /* Load rest of compatibility struct */ | ||
1373 | strncpy(tw_dev->tw_compat_info.driver_version, TW_DRIVER_VERSION, strlen(TW_DRIVER_VERSION)); | ||
1374 | tw_dev->tw_compat_info.driver_srl_high = TW_CURRENT_DRIVER_SRL; | ||
1375 | tw_dev->tw_compat_info.driver_branch_high = TW_CURRENT_DRIVER_BRANCH; | ||
1376 | tw_dev->tw_compat_info.driver_build_high = TW_CURRENT_DRIVER_BUILD; | ||
1377 | tw_dev->tw_compat_info.driver_srl_low = TW_BASE_FW_SRL; | ||
1378 | tw_dev->tw_compat_info.driver_branch_low = TW_BASE_FW_BRANCH; | ||
1379 | tw_dev->tw_compat_info.driver_build_low = TW_BASE_FW_BUILD; | ||
1380 | tw_dev->tw_compat_info.fw_on_ctlr_srl = fw_on_ctlr_srl; | ||
1381 | tw_dev->tw_compat_info.fw_on_ctlr_branch = fw_on_ctlr_branch; | ||
1382 | tw_dev->tw_compat_info.fw_on_ctlr_build = fw_on_ctlr_build; | ||
1383 | |||
1384 | /* If we got here, controller is in a good state */ | ||
1385 | retval = 0; | ||
1386 | goto out; | ||
1387 | } | ||
1388 | out: | ||
1389 | return retval; | ||
1390 | } /* End twl_reset_sequence() */ | ||
1391 | |||
1392 | /* This function will reset a device extension */ | ||
1393 | static int twl_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset) | ||
1394 | { | ||
1395 | int i = 0, retval = 1; | ||
1396 | unsigned long flags = 0; | ||
1397 | |||
1398 | /* Block SCSI requests while we are resetting */ | ||
1399 | if (ioctl_reset) | ||
1400 | scsi_block_requests(tw_dev->host); | ||
1401 | |||
1402 | set_bit(TW_IN_RESET, &tw_dev->flags); | ||
1403 | TWL_MASK_INTERRUPTS(tw_dev); | ||
1404 | TWL_CLEAR_DB_INTERRUPT(tw_dev); | ||
1405 | |||
1406 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | ||
1407 | |||
1408 | /* Abort all requests that are in progress */ | ||
1409 | for (i = 0; i < TW_Q_LENGTH; i++) { | ||
1410 | if ((tw_dev->state[i] != TW_S_FINISHED) && | ||
1411 | (tw_dev->state[i] != TW_S_INITIAL) && | ||
1412 | (tw_dev->state[i] != TW_S_COMPLETED)) { | ||
1413 | if (tw_dev->srb[i]) { | ||
1414 | tw_dev->srb[i]->result = (DID_RESET << 16); | ||
1415 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); | ||
1416 | twl_unmap_scsi_data(tw_dev, i); | ||
1417 | } | ||
1418 | } | ||
1419 | } | ||
1420 | |||
1421 | /* Reset queues and counts */ | ||
1422 | for (i = 0; i < TW_Q_LENGTH; i++) { | ||
1423 | tw_dev->free_queue[i] = i; | ||
1424 | tw_dev->state[i] = TW_S_INITIAL; | ||
1425 | } | ||
1426 | tw_dev->free_head = TW_Q_START; | ||
1427 | tw_dev->free_tail = TW_Q_START; | ||
1428 | tw_dev->posted_request_count = 0; | ||
1429 | |||
1430 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | ||
1431 | |||
1432 | if (twl_reset_sequence(tw_dev, 1)) | ||
1433 | goto out; | ||
1434 | |||
1435 | TWL_UNMASK_INTERRUPTS(tw_dev); | ||
1436 | |||
1437 | clear_bit(TW_IN_RESET, &tw_dev->flags); | ||
1438 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | ||
1439 | |||
1440 | retval = 0; | ||
1441 | out: | ||
1442 | if (ioctl_reset) | ||
1443 | scsi_unblock_requests(tw_dev->host); | ||
1444 | return retval; | ||
1445 | } /* End twl_reset_device_extension() */ | ||
1446 | |||
1447 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | ||
1448 | static int twl_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) | ||
1449 | { | ||
1450 | int heads, sectors; | ||
1451 | TW_Device_Extension *tw_dev; | ||
1452 | |||
1453 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | ||
1454 | |||
1455 | if (capacity >= 0x200000) { | ||
1456 | heads = 255; | ||
1457 | sectors = 63; | ||
1458 | } else { | ||
1459 | heads = 64; | ||
1460 | sectors = 32; | ||
1461 | } | ||
1462 | |||
1463 | geom[0] = heads; | ||
1464 | geom[1] = sectors; | ||
1465 | geom[2] = sector_div(capacity, heads * sectors); /* cylinders */ | ||
1466 | |||
1467 | return 0; | ||
1468 | } /* End twl_scsi_biosparam() */ | ||
1469 | |||
1470 | /* This is the new scsi eh reset function */ | ||
1471 | static int twl_scsi_eh_reset(struct scsi_cmnd *SCpnt) | ||
1472 | { | ||
1473 | TW_Device_Extension *tw_dev = NULL; | ||
1474 | int retval = FAILED; | ||
1475 | |||
1476 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | ||
1477 | |||
1478 | tw_dev->num_resets++; | ||
1479 | |||
1480 | sdev_printk(KERN_WARNING, SCpnt->device, | ||
1481 | "WARNING: (0x%02X:0x%04X): Command (0x%x) timed out, resetting card.\n", | ||
1482 | TW_DRIVER, 0x2c, SCpnt->cmnd[0]); | ||
1483 | |||
1484 | /* Make sure we are not issuing an ioctl or resetting from ioctl */ | ||
1485 | mutex_lock(&tw_dev->ioctl_lock); | ||
1486 | |||
1487 | /* Now reset the card and some of the device extension data */ | ||
1488 | if (twl_reset_device_extension(tw_dev, 0)) { | ||
1489 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x15, "Controller reset failed during scsi host reset"); | ||
1490 | goto out; | ||
1491 | } | ||
1492 | |||
1493 | retval = SUCCESS; | ||
1494 | out: | ||
1495 | mutex_unlock(&tw_dev->ioctl_lock); | ||
1496 | return retval; | ||
1497 | } /* End twl_scsi_eh_reset() */ | ||
1498 | |||
1499 | /* This is the main scsi queue function to handle scsi opcodes */ | ||
1500 | static int twl_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) | ||
1501 | { | ||
1502 | int request_id, retval; | ||
1503 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | ||
1504 | |||
1505 | /* If we are resetting due to timed out ioctl, report as busy */ | ||
1506 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) { | ||
1507 | retval = SCSI_MLQUEUE_HOST_BUSY; | ||
1508 | goto out; | ||
1509 | } | ||
1510 | |||
1511 | /* Save done function into scsi_cmnd struct */ | ||
1512 | SCpnt->scsi_done = done; | ||
1513 | |||
1514 | /* Get a free request id */ | ||
1515 | twl_get_request_id(tw_dev, &request_id); | ||
1516 | |||
1517 | /* Save the scsi command for use by the ISR */ | ||
1518 | tw_dev->srb[request_id] = SCpnt; | ||
1519 | |||
1520 | /* Initialize phase to zero */ | ||
1521 | SCpnt->SCp.phase = TW_PHASE_INITIAL; | ||
1522 | |||
1523 | retval = twl_scsiop_execute_scsi(tw_dev, request_id, NULL, 0, NULL); | ||
1524 | if (retval) { | ||
1525 | tw_dev->state[request_id] = TW_S_COMPLETED; | ||
1526 | twl_free_request_id(tw_dev, request_id); | ||
1527 | SCpnt->result = (DID_ERROR << 16); | ||
1528 | done(SCpnt); | ||
1529 | retval = 0; | ||
1530 | } | ||
1531 | out: | ||
1532 | return retval; | ||
1533 | } /* End twl_scsi_queue() */ | ||
1534 | |||
1535 | /* This function tells the controller to shut down */ | ||
1536 | static void __twl_shutdown(TW_Device_Extension *tw_dev) | ||
1537 | { | ||
1538 | /* Disable interrupts */ | ||
1539 | TWL_MASK_INTERRUPTS(tw_dev); | ||
1540 | |||
1541 | /* Free up the IRQ */ | ||
1542 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | ||
1543 | |||
1544 | printk(KERN_WARNING "3w-sas: Shutting down host %d.\n", tw_dev->host->host_no); | ||
1545 | |||
1546 | /* Tell the card we are shutting down */ | ||
1547 | if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | ||
1548 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x16, "Connection shutdown failed"); | ||
1549 | } else { | ||
1550 | printk(KERN_WARNING "3w-sas: Shutdown complete.\n"); | ||
1551 | } | ||
1552 | |||
1553 | /* Clear doorbell interrupt just before exit */ | ||
1554 | TWL_CLEAR_DB_INTERRUPT(tw_dev); | ||
1555 | } /* End __twl_shutdown() */ | ||
1556 | |||
1557 | /* Wrapper for __twl_shutdown */ | ||
1558 | static void twl_shutdown(struct pci_dev *pdev) | ||
1559 | { | ||
1560 | struct Scsi_Host *host = pci_get_drvdata(pdev); | ||
1561 | TW_Device_Extension *tw_dev; | ||
1562 | |||
1563 | if (!host) | ||
1564 | return; | ||
1565 | |||
1566 | tw_dev = (TW_Device_Extension *)host->hostdata; | ||
1567 | |||
1568 | if (tw_dev->online) | ||
1569 | __twl_shutdown(tw_dev); | ||
1570 | } /* End twl_shutdown() */ | ||
1571 | |||
1572 | /* This function configures unit settings when a unit is coming on-line */ | ||
1573 | static int twl_slave_configure(struct scsi_device *sdev) | ||
1574 | { | ||
1575 | /* Force 60 second timeout */ | ||
1576 | blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); | ||
1577 | |||
1578 | return 0; | ||
1579 | } /* End twl_slave_configure() */ | ||
1580 | |||
1581 | /* scsi_host_template initializer */ | ||
1582 | static struct scsi_host_template driver_template = { | ||
1583 | .module = THIS_MODULE, | ||
1584 | .name = "3w-sas", | ||
1585 | .queuecommand = twl_scsi_queue, | ||
1586 | .eh_host_reset_handler = twl_scsi_eh_reset, | ||
1587 | .bios_param = twl_scsi_biosparam, | ||
1588 | .change_queue_depth = twl_change_queue_depth, | ||
1589 | .can_queue = TW_Q_LENGTH-2, | ||
1590 | .slave_configure = twl_slave_configure, | ||
1591 | .this_id = -1, | ||
1592 | .sg_tablesize = TW_LIBERATOR_MAX_SGL_LENGTH, | ||
1593 | .max_sectors = TW_MAX_SECTORS, | ||
1594 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | ||
1595 | .use_clustering = ENABLE_CLUSTERING, | ||
1596 | .shost_attrs = twl_host_attrs, | ||
1597 | .emulated = 1 | ||
1598 | }; | ||
1599 | |||
1600 | /* This function will probe and initialize a card */ | ||
1601 | static int __devinit twl_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) | ||
1602 | { | ||
1603 | struct Scsi_Host *host = NULL; | ||
1604 | TW_Device_Extension *tw_dev; | ||
1605 | int retval = -ENODEV; | ||
1606 | int *ptr_phycount, phycount=0; | ||
1607 | |||
1608 | retval = pci_enable_device(pdev); | ||
1609 | if (retval) { | ||
1610 | TW_PRINTK(host, TW_DRIVER, 0x17, "Failed to enable pci device"); | ||
1611 | goto out_disable_device; | ||
1612 | } | ||
1613 | |||
1614 | pci_set_master(pdev); | ||
1615 | pci_try_set_mwi(pdev); | ||
1616 | |||
1617 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) | ||
1618 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) | ||
1619 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) | ||
1620 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { | ||
1621 | TW_PRINTK(host, TW_DRIVER, 0x18, "Failed to set dma mask"); | ||
1622 | retval = -ENODEV; | ||
1623 | goto out_disable_device; | ||
1624 | } | ||
1625 | |||
1626 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | ||
1627 | if (!host) { | ||
1628 | TW_PRINTK(host, TW_DRIVER, 0x19, "Failed to allocate memory for device extension"); | ||
1629 | retval = -ENOMEM; | ||
1630 | goto out_disable_device; | ||
1631 | } | ||
1632 | tw_dev = shost_priv(host); | ||
1633 | |||
1634 | /* Save values to device extension */ | ||
1635 | tw_dev->host = host; | ||
1636 | tw_dev->tw_pci_dev = pdev; | ||
1637 | |||
1638 | if (twl_initialize_device_extension(tw_dev)) { | ||
1639 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1a, "Failed to initialize device extension"); | ||
1640 | goto out_free_device_extension; | ||
1641 | } | ||
1642 | |||
1643 | /* Request IO regions */ | ||
1644 | retval = pci_request_regions(pdev, "3w-sas"); | ||
1645 | if (retval) { | ||
1646 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1b, "Failed to get mem region"); | ||
1647 | goto out_free_device_extension; | ||
1648 | } | ||
1649 | |||
1650 | /* Save base address, use region 1 */ | ||
1651 | tw_dev->base_addr = pci_iomap(pdev, 1, 0); | ||
1652 | if (!tw_dev->base_addr) { | ||
1653 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1c, "Failed to ioremap"); | ||
1654 | goto out_release_mem_region; | ||
1655 | } | ||
1656 | |||
1657 | /* Disable interrupts on the card */ | ||
1658 | TWL_MASK_INTERRUPTS(tw_dev); | ||
1659 | |||
1660 | /* Initialize the card */ | ||
1661 | if (twl_reset_sequence(tw_dev, 0)) { | ||
1662 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1d, "Controller reset failed during probe"); | ||
1663 | goto out_iounmap; | ||
1664 | } | ||
1665 | |||
1666 | /* Set host specific parameters */ | ||
1667 | host->max_id = TW_MAX_UNITS; | ||
1668 | host->max_cmd_len = TW_MAX_CDB_LEN; | ||
1669 | host->max_lun = TW_MAX_LUNS; | ||
1670 | host->max_channel = 0; | ||
1671 | |||
1672 | /* Register the card with the kernel SCSI layer */ | ||
1673 | retval = scsi_add_host(host, &pdev->dev); | ||
1674 | if (retval) { | ||
1675 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1e, "scsi add host failed"); | ||
1676 | goto out_iounmap; | ||
1677 | } | ||
1678 | |||
1679 | pci_set_drvdata(pdev, host); | ||
1680 | |||
1681 | printk(KERN_WARNING "3w-sas: scsi%d: Found an LSI 3ware %s Controller at 0x%llx, IRQ: %d.\n", | ||
1682 | host->host_no, | ||
1683 | (char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE, | ||
1684 | TW_PARAM_MODEL, TW_PARAM_MODEL_LENGTH), | ||
1685 | (u64)pci_resource_start(pdev, 1), pdev->irq); | ||
1686 | |||
1687 | ptr_phycount = twl_get_param(tw_dev, 2, TW_PARAM_PHY_SUMMARY_TABLE, | ||
1688 | TW_PARAM_PHYCOUNT, TW_PARAM_PHYCOUNT_LENGTH); | ||
1689 | if (ptr_phycount) | ||
1690 | phycount = le32_to_cpu(*(int *)ptr_phycount); | ||
1691 | |||
1692 | printk(KERN_WARNING "3w-sas: scsi%d: Firmware %s, BIOS %s, Phys: %d.\n", | ||
1693 | host->host_no, | ||
1694 | (char *)twl_get_param(tw_dev, 1, TW_VERSION_TABLE, | ||
1695 | TW_PARAM_FWVER, TW_PARAM_FWVER_LENGTH), | ||
1696 | (char *)twl_get_param(tw_dev, 2, TW_VERSION_TABLE, | ||
1697 | TW_PARAM_BIOSVER, TW_PARAM_BIOSVER_LENGTH), | ||
1698 | phycount); | ||
1699 | |||
1700 | /* Try to enable MSI */ | ||
1701 | if (use_msi && !pci_enable_msi(pdev)) | ||
1702 | set_bit(TW_USING_MSI, &tw_dev->flags); | ||
1703 | |||
1704 | /* Now setup the interrupt handler */ | ||
1705 | retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev); | ||
1706 | if (retval) { | ||
1707 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x1f, "Error requesting IRQ"); | ||
1708 | goto out_remove_host; | ||
1709 | } | ||
1710 | |||
1711 | twl_device_extension_list[twl_device_extension_count] = tw_dev; | ||
1712 | twl_device_extension_count++; | ||
1713 | |||
1714 | /* Re-enable interrupts on the card */ | ||
1715 | TWL_UNMASK_INTERRUPTS(tw_dev); | ||
1716 | |||
1717 | /* Finally, scan the host */ | ||
1718 | scsi_scan_host(host); | ||
1719 | |||
1720 | /* Add sysfs binary files */ | ||
1721 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr)) | ||
1722 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x20, "Failed to create sysfs binary file: 3ware_aen_read"); | ||
1723 | if (sysfs_create_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr)) | ||
1724 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x21, "Failed to create sysfs binary file: 3ware_compat_info"); | ||
1725 | |||
1726 | if (twl_major == -1) { | ||
1727 | if ((twl_major = register_chrdev (0, "twl", &twl_fops)) < 0) | ||
1728 | TW_PRINTK(host, TW_DRIVER, 0x22, "Failed to register character device"); | ||
1729 | } | ||
1730 | tw_dev->online = 1; | ||
1731 | return 0; | ||
1732 | |||
1733 | out_remove_host: | ||
1734 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | ||
1735 | pci_disable_msi(pdev); | ||
1736 | scsi_remove_host(host); | ||
1737 | out_iounmap: | ||
1738 | iounmap(tw_dev->base_addr); | ||
1739 | out_release_mem_region: | ||
1740 | pci_release_regions(pdev); | ||
1741 | out_free_device_extension: | ||
1742 | twl_free_device_extension(tw_dev); | ||
1743 | scsi_host_put(host); | ||
1744 | out_disable_device: | ||
1745 | pci_disable_device(pdev); | ||
1746 | |||
1747 | return retval; | ||
1748 | } /* End twl_probe() */ | ||
1749 | |||
1750 | /* This function is called to remove a device */ | ||
1751 | static void twl_remove(struct pci_dev *pdev) | ||
1752 | { | ||
1753 | struct Scsi_Host *host = pci_get_drvdata(pdev); | ||
1754 | TW_Device_Extension *tw_dev; | ||
1755 | |||
1756 | if (!host) | ||
1757 | return; | ||
1758 | |||
1759 | tw_dev = (TW_Device_Extension *)host->hostdata; | ||
1760 | |||
1761 | if (!tw_dev->online) | ||
1762 | return; | ||
1763 | |||
1764 | /* Remove sysfs binary files */ | ||
1765 | sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_aen_read_attr); | ||
1766 | sysfs_remove_bin_file(&host->shost_dev.kobj, &twl_sysfs_compat_info_attr); | ||
1767 | |||
1768 | scsi_remove_host(tw_dev->host); | ||
1769 | |||
1770 | /* Unregister character device */ | ||
1771 | if (twl_major >= 0) { | ||
1772 | unregister_chrdev(twl_major, "twl"); | ||
1773 | twl_major = -1; | ||
1774 | } | ||
1775 | |||
1776 | /* Shutdown the card */ | ||
1777 | __twl_shutdown(tw_dev); | ||
1778 | |||
1779 | /* Disable MSI if enabled */ | ||
1780 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | ||
1781 | pci_disable_msi(pdev); | ||
1782 | |||
1783 | /* Free IO remapping */ | ||
1784 | iounmap(tw_dev->base_addr); | ||
1785 | |||
1786 | /* Free up the mem region */ | ||
1787 | pci_release_regions(pdev); | ||
1788 | |||
1789 | /* Free up device extension resources */ | ||
1790 | twl_free_device_extension(tw_dev); | ||
1791 | |||
1792 | scsi_host_put(tw_dev->host); | ||
1793 | pci_disable_device(pdev); | ||
1794 | twl_device_extension_count--; | ||
1795 | } /* End twl_remove() */ | ||
1796 | |||
1797 | #ifdef CONFIG_PM | ||
1798 | /* This function is called on PCI suspend */ | ||
1799 | static int twl_suspend(struct pci_dev *pdev, pm_message_t state) | ||
1800 | { | ||
1801 | struct Scsi_Host *host = pci_get_drvdata(pdev); | ||
1802 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | ||
1803 | |||
1804 | printk(KERN_WARNING "3w-sas: Suspending host %d.\n", tw_dev->host->host_no); | ||
1805 | /* Disable interrupts */ | ||
1806 | TWL_MASK_INTERRUPTS(tw_dev); | ||
1807 | |||
1808 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | ||
1809 | |||
1810 | /* Tell the card we are shutting down */ | ||
1811 | if (twl_initconnection(tw_dev, 1, 0, 0, 0, 0, 0, NULL, NULL, NULL, NULL, NULL)) { | ||
1812 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x23, "Connection shutdown failed during suspend"); | ||
1813 | } else { | ||
1814 | printk(KERN_WARNING "3w-sas: Suspend complete.\n"); | ||
1815 | } | ||
1816 | |||
1817 | /* Clear doorbell interrupt */ | ||
1818 | TWL_CLEAR_DB_INTERRUPT(tw_dev); | ||
1819 | |||
1820 | pci_save_state(pdev); | ||
1821 | pci_disable_device(pdev); | ||
1822 | pci_set_power_state(pdev, pci_choose_state(pdev, state)); | ||
1823 | |||
1824 | return 0; | ||
1825 | } /* End twl_suspend() */ | ||
1826 | |||
1827 | /* This function is called on PCI resume */ | ||
1828 | static int twl_resume(struct pci_dev *pdev) | ||
1829 | { | ||
1830 | int retval = 0; | ||
1831 | struct Scsi_Host *host = pci_get_drvdata(pdev); | ||
1832 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | ||
1833 | |||
1834 | printk(KERN_WARNING "3w-sas: Resuming host %d.\n", tw_dev->host->host_no); | ||
1835 | pci_set_power_state(pdev, PCI_D0); | ||
1836 | pci_enable_wake(pdev, PCI_D0, 0); | ||
1837 | pci_restore_state(pdev); | ||
1838 | |||
1839 | retval = pci_enable_device(pdev); | ||
1840 | if (retval) { | ||
1841 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x24, "Enable device failed during resume"); | ||
1842 | return retval; | ||
1843 | } | ||
1844 | |||
1845 | pci_set_master(pdev); | ||
1846 | pci_try_set_mwi(pdev); | ||
1847 | |||
1848 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) | ||
1849 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64))) | ||
1850 | if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) | ||
1851 | || pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32))) { | ||
1852 | TW_PRINTK(host, TW_DRIVER, 0x25, "Failed to set dma mask during resume"); | ||
1853 | retval = -ENODEV; | ||
1854 | goto out_disable_device; | ||
1855 | } | ||
1856 | |||
1857 | /* Initialize the card */ | ||
1858 | if (twl_reset_sequence(tw_dev, 0)) { | ||
1859 | retval = -ENODEV; | ||
1860 | goto out_disable_device; | ||
1861 | } | ||
1862 | |||
1863 | /* Now setup the interrupt handler */ | ||
1864 | retval = request_irq(pdev->irq, twl_interrupt, IRQF_SHARED, "3w-sas", tw_dev); | ||
1865 | if (retval) { | ||
1866 | TW_PRINTK(tw_dev->host, TW_DRIVER, 0x26, "Error requesting IRQ during resume"); | ||
1867 | retval = -ENODEV; | ||
1868 | goto out_disable_device; | ||
1869 | } | ||
1870 | |||
1871 | /* Now enable MSI if enabled */ | ||
1872 | if (test_bit(TW_USING_MSI, &tw_dev->flags)) | ||
1873 | pci_enable_msi(pdev); | ||
1874 | |||
1875 | /* Re-enable interrupts on the card */ | ||
1876 | TWL_UNMASK_INTERRUPTS(tw_dev); | ||
1877 | |||
1878 | printk(KERN_WARNING "3w-sas: Resume complete.\n"); | ||
1879 | return 0; | ||
1880 | |||
1881 | out_disable_device: | ||
1882 | scsi_remove_host(host); | ||
1883 | pci_disable_device(pdev); | ||
1884 | |||
1885 | return retval; | ||
1886 | } /* End twl_resume() */ | ||
1887 | #endif | ||
1888 | |||
1889 | /* PCI Devices supported by this driver */ | ||
1890 | static struct pci_device_id twl_pci_tbl[] __devinitdata = { | ||
1891 | { PCI_VDEVICE(3WARE, PCI_DEVICE_ID_3WARE_9750) }, | ||
1892 | { } | ||
1893 | }; | ||
1894 | MODULE_DEVICE_TABLE(pci, twl_pci_tbl); | ||
1895 | |||
1896 | /* pci_driver initializer */ | ||
1897 | static struct pci_driver twl_driver = { | ||
1898 | .name = "3w-sas", | ||
1899 | .id_table = twl_pci_tbl, | ||
1900 | .probe = twl_probe, | ||
1901 | .remove = twl_remove, | ||
1902 | #ifdef CONFIG_PM | ||
1903 | .suspend = twl_suspend, | ||
1904 | .resume = twl_resume, | ||
1905 | #endif | ||
1906 | .shutdown = twl_shutdown | ||
1907 | }; | ||
1908 | |||
1909 | /* This function is called on driver initialization */ | ||
1910 | static int __init twl_init(void) | ||
1911 | { | ||
1912 | printk(KERN_INFO "LSI 3ware SAS/SATA-RAID Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | ||
1913 | |||
1914 | return pci_register_driver(&twl_driver); | ||
1915 | } /* End twl_init() */ | ||
1916 | |||
1917 | /* This function is called on driver exit */ | ||
1918 | static void __exit twl_exit(void) | ||
1919 | { | ||
1920 | pci_unregister_driver(&twl_driver); | ||
1921 | } /* End twl_exit() */ | ||
1922 | |||
1923 | module_init(twl_init); | ||
1924 | module_exit(twl_exit); | ||
1925 | |||