1 | /* |
2 | 3w-xxxx.c -- 3ware Storage Controller device driver for Linux. |
3 | |
4 | Written By: Adam Radford <aradford@gmail.com> |
5 | Modifications By: Joel Jacobson <linux@3ware.com> |
6 | Arnaldo Carvalho de Melo <acme@conectiva.com.br> |
7 | Brad Strand <linux@3ware.com> |
8 | |
9 | Copyright (C) 1999-2010 3ware Inc. |
10 | |
11 | Kernel compatibility By: Andre Hedrick <andre@suse.com> |
12 | Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com> |
13 | |
14 | Further tiny build fixes and trivial hoovering Alan Cox |
15 | |
16 | This program is free software; you can redistribute it and/or modify |
17 | it under the terms of the GNU General Public License as published by |
18 | the Free Software Foundation; version 2 of the License. |
19 | |
20 | This program is distributed in the hope that it will be useful, |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
23 | GNU General Public License for more details. |
24 | |
25 | NO WARRANTY |
26 | THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR |
27 | CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT |
28 | LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, |
29 | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is |
30 | solely responsible for determining the appropriateness of using and |
31 | distributing the Program and assumes all risks associated with its |
32 | exercise of rights under this Agreement, including but not limited to |
33 | the risks and costs of program errors, damage to or loss of data, |
34 | programs or equipment, and unavailability or interruption of operations. |
35 | |
36 | DISCLAIMER OF LIABILITY |
37 | NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY |
38 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
39 | DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND |
40 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR |
41 | TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE |
42 | USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED |
43 | HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES |
44 | |
45 | You should have received a copy of the GNU General Public License |
46 | along with this program; if not, write to the Free Software |
47 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
48 | |
49 | Bugs/Comments/Suggestions should be mailed to: |
50 | |
51 | aradford@gmail.com |
52 | |
53 | |
54 | History |
55 | ------- |
56 | 0.1.000 - Initial release. |
57 | 0.4.000 - Added support for Asynchronous Event Notification through |
58 | ioctls for 3DM. |
59 | 1.0.000 - Added DPO & FUA bit support for WRITE_10 & WRITE_6 cdb |
60 | to disable drive write-cache before writes. |
61 | 1.1.000 - Fixed performance bug with DPO & FUA not existing for WRITE_6. |
62 | 1.2.000 - Added support for clean shutdown notification/feature table. |
63 | 1.02.00.001 - Added support for full command packet posts through ioctls |
64 | for 3DM. |
65 | Bug fix so hot spare drives don't show up. |
66 | 1.02.00.002 - Fix bug with tw_setfeature() call that caused oops on some |
67 | systems. |
68 | 08/21/00 - release previously allocated resources on failure at |
69 | tw_allocate_memory (acme) |
70 | 1.02.00.003 - Fix tw_interrupt() to report error to scsi layer when |
71 | controller status is non-zero. |
72 | Added handling of request_sense opcode. |
73 | Fix possible null pointer dereference in |
74 | tw_reset_device_extension() |
75 | 1.02.00.004 - Add support for device id of 3ware 7000 series controllers. |
76 | Make tw_setfeature() call with interrupts disabled. |
77 | Register interrupt handler before enabling interrupts. |
78 | Clear attention interrupt before draining aen queue. |
79 | 1.02.00.005 - Allocate bounce buffers and custom queue depth for raid5 for |
80 | 6000 and 5000 series controllers. |
81 | Reduce polling mdelays causing problems on some systems. |
82 | Fix use_sg = 1 calculation bug. |
83 | Check for scsi_register returning NULL. |
84 | Add aen count to /proc/scsi/3w-xxxx. |
85 | Remove aen code unit masking in tw_aen_complete(). |
86 | 1.02.00.006 - Remove unit from printk in tw_scsi_eh_abort(), causing |
87 | possible oops. |
88 | Fix possible null pointer dereference in tw_scsi_queue() |
89 | if done function pointer was invalid. |
90 | 1.02.00.007 - Fix possible null pointer dereferences in tw_ioctl(). |
91 | Remove check for invalid done function pointer from |
92 | tw_scsi_queue(). |
93 | 1.02.00.008 - Set max sectors per io to TW_MAX_SECTORS in tw_findcards(). |
94 | Add tw_decode_error() for printing readable error messages. |
95 | Print some useful information on certain aen codes. |
96 | Add tw_decode_bits() for interpreting status register output. |
97 | Make scsi_set_pci_device() for kernels >= 2.4.4 |
98 | Fix bug where aen's could be lost before a reset. |
99 | Re-add spinlocks in tw_scsi_detect(). |
100 | Fix possible null pointer dereference in tw_aen_drain_queue() |
101 | during initialization. |
102 | Clear pci parity errors during initialization and during io. |
103 | 1.02.00.009 - Remove redundant increment in tw_state_request_start(). |
104 | Add ioctl support for direct ATA command passthru. |
105 | Add entire aen code string list. |
106 | 1.02.00.010 - Cleanup queueing code, fix jbod thoughput. |
107 | Fix get_param for specific units. |
108 | 1.02.00.011 - Fix bug in tw_aen_complete() where aen's could be lost. |
109 | Fix tw_aen_drain_queue() to display useful info at init. |
110 | Set tw_host->max_id for 12 port cards. |
111 | Add ioctl support for raw command packet post from userspace |
112 | with sglist fragments (parameter and io). |
113 | 1.02.00.012 - Fix read capacity to under report by 1 sector to fix get |
114 | last sector ioctl. |
115 | 1.02.00.013 - Fix bug where more AEN codes weren't coming out during |
116 | driver initialization. |
117 | Improved handling of PCI aborts. |
118 | 1.02.00.014 - Fix bug in tw_findcards() where AEN code could be lost. |
119 | Increase timeout in tw_aen_drain_queue() to 30 seconds. |
120 | 1.02.00.015 - Re-write raw command post with data ioctl method. |
121 | Remove raid5 bounce buffers for raid5 for 6XXX for kernel 2.5 |
122 | Add tw_map/unmap_scsi_sg/single_data() for kernel 2.5 |
123 | Replace io_request_lock with host_lock for kernel 2.5 |
124 | Set max_cmd_len to 16 for 3dm for kernel 2.5 |
125 | 1.02.00.016 - Set host->max_sectors back up to 256. |
126 | 1.02.00.017 - Modified pci parity error handling/clearing from config space |
127 | during initialization. |
128 | 1.02.00.018 - Better handling of request sense opcode and sense information |
129 | for failed commands. Add tw_decode_sense(). |
130 | Replace all mdelay()'s with scsi_sleep(). |
131 | 1.02.00.019 - Revert mdelay's and scsi_sleep's, this caused problems on |
132 | some SMP systems. |
133 | 1.02.00.020 - Add pci_set_dma_mask(), rewrite kmalloc()/virt_to_bus() to |
134 | pci_alloc/free_consistent(). |
135 | Better alignment checking in tw_allocate_memory(). |
136 | Cleanup tw_initialize_device_extension(). |
137 | 1.02.00.021 - Bump cmd_per_lun in SHT to 255 for better jbod performance. |
138 | Improve handling of errors in tw_interrupt(). |
139 | Add handling/clearing of controller queue error. |
140 | Empty stale responses before draining aen queue. |
141 | Fix tw_scsi_eh_abort() to not reset on every io abort. |
142 | Set can_queue in SHT to 255 to prevent hang from AEN. |
143 | 1.02.00.022 - Fix possible null pointer dereference in tw_scsi_release(). |
144 | 1.02.00.023 - Fix bug in tw_aen_drain_queue() where unit # was always zero. |
145 | 1.02.00.024 - Add severity levels to AEN strings. |
146 | 1.02.00.025 - Fix command interrupt spurious error messages. |
147 | Fix bug in raw command post with data ioctl method. |
148 | Fix bug where rollcall sometimes failed with cable errors. |
149 | Print unit # on all command timeouts. |
150 | 1.02.00.026 - Fix possible infinite retry bug with power glitch induced |
151 | drive timeouts. |
152 | Cleanup some AEN severity levels. |
153 | 1.02.00.027 - Add drive not supported AEN code for SATA controllers. |
154 | Remove spurious unknown ioctl error message. |
155 | 1.02.00.028 - Fix bug where multiple controllers with no units were the |
156 | same card number. |
157 | Fix bug where cards were being shut down more than once. |
158 | 1.02.00.029 - Add missing pci_free_consistent() in tw_allocate_memory(). |
159 | Replace pci_map_single() with pci_map_page() for highmem. |
160 | Check for tw_setfeature() failure. |
161 | 1.02.00.030 - Make driver 64-bit clean. |
162 | 1.02.00.031 - Cleanup polling timeouts/routines in several places. |
163 | Add support for mode sense opcode. |
164 | Add support for cache mode page. |
165 | Add support for synchronize cache opcode. |
166 | 1.02.00.032 - Fix small multicard rollcall bug. |
167 | Make driver stay loaded with no units for hot add/swap. |
168 | Add support for "twe" character device for ioctls. |
169 | Clean up request_id queueing code. |
170 | Fix tw_scsi_queue() spinlocks. |
171 | 1.02.00.033 - Fix tw_aen_complete() to not queue 'queue empty' AEN's. |
172 | Initialize queues correctly when loading with no valid units. |
173 | 1.02.00.034 - Fix tw_decode_bits() to handle multiple errors. |
174 | Add support for user configurable cmd_per_lun. |
175 | Add support for sht->slave_configure(). |
176 | 1.02.00.035 - Improve tw_allocate_memory() memory allocation. |
177 | Fix tw_chrdev_ioctl() to sleep correctly. |
178 | 1.02.00.036 - Increase character ioctl timeout to 60 seconds. |
179 | 1.02.00.037 - Fix tw_ioctl() to handle all non-data ATA passthru cmds |
180 | for 'smartmontools' support. |
181 | 1.26.00.038 - Roll driver minor version to 26 to denote kernel 2.6. |
182 | Add support for cmds_per_lun module parameter. |
183 | 1.26.00.039 - Fix bug in tw_chrdev_ioctl() polling code. |
184 | Fix data_buffer_length usage in tw_chrdev_ioctl(). |
185 | Update contact information. |
186 | 1.26.02.000 - Convert driver to pci_driver format. |
187 | 1.26.02.001 - Increase max ioctl buffer size to 512 sectors. |
188 | Make tw_scsi_queue() return 0 for 'Unknown scsi opcode'. |
189 | Fix tw_remove() to free irq handler/unregister_chrdev() |
190 | before shutting down card. |
191 | Change to new 'change_queue_depth' api. |
192 | Fix 'handled=1' ISR usage, remove bogus IRQ check. |
193 | 1.26.02.002 - Free irq handler in __tw_shutdown(). |
194 | Turn on RCD bit for caching mode page. |
195 | Serialize reset code. |
196 | 1.26.02.003 - Force 60 second timeout default. |
197 | */ |
198 | |
199 | #include <linux/module.h> |
200 | #include <linux/reboot.h> |
201 | #include <linux/spinlock.h> |
202 | #include <linux/interrupt.h> |
203 | #include <linux/moduleparam.h> |
204 | #include <linux/errno.h> |
205 | #include <linux/types.h> |
206 | #include <linux/delay.h> |
207 | #include <linux/gfp.h> |
208 | #include <linux/pci.h> |
209 | #include <linux/time.h> |
210 | #include <linux/mutex.h> |
211 | #include <asm/io.h> |
212 | #include <asm/irq.h> |
213 | #include <linux/uaccess.h> |
214 | #include <scsi/scsi.h> |
215 | #include <scsi/scsi_host.h> |
216 | #include <scsi/scsi_tcq.h> |
217 | #include <scsi/scsi_cmnd.h> |
218 | #include <scsi/scsi_eh.h> |
219 | #include "3w-xxxx.h" |
220 | |
221 | /* Globals */ |
222 | #define TW_DRIVER_VERSION "1.26.02.003" |
223 | static DEFINE_MUTEX(tw_mutex); |
224 | static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT]; |
225 | static int tw_device_extension_count = 0; |
226 | static int twe_major = -1; |
227 | |
228 | /* Module parameters */ |
229 | MODULE_AUTHOR("LSI" ); |
230 | MODULE_DESCRIPTION("3ware Storage Controller Linux Driver" ); |
231 | MODULE_LICENSE("GPL" ); |
232 | MODULE_VERSION(TW_DRIVER_VERSION); |
233 | |
234 | /* Function prototypes */ |
235 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev); |
236 | |
237 | /* Functions */ |
238 | |
239 | /* This function will check the status register for unexpected bits */ |
240 | static int tw_check_bits(u32 status_reg_value) |
241 | { |
242 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) { |
243 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n" , status_reg_value); |
244 | return 1; |
245 | } |
246 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) { |
247 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n" , status_reg_value); |
248 | return 1; |
249 | } |
250 | |
251 | return 0; |
252 | } /* End tw_check_bits() */ |
253 | |
254 | /* This function will print readable messages from status register errors */ |
255 | static int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host) |
256 | { |
257 | char host[16]; |
258 | |
259 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n" ); |
260 | |
261 | if (print_host) |
262 | sprintf(buf: host, fmt: " scsi%d:" , tw_dev->host->host_no); |
263 | else |
264 | host[0] = '\0'; |
265 | |
266 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { |
267 | printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n" , host); |
268 | outl(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
269 | } |
270 | |
271 | if (status_reg_value & TW_STATUS_PCI_ABORT) { |
272 | printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n" , host); |
273 | outl(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); |
274 | pci_write_config_word(dev: tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); |
275 | } |
276 | |
277 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { |
278 | printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n" , host); |
279 | outl(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
280 | } |
281 | |
282 | if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) { |
283 | printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n" , host); |
284 | outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); |
285 | } |
286 | |
287 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { |
288 | if (tw_dev->reset_print == 0) { |
289 | printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n" , host); |
290 | tw_dev->reset_print = 1; |
291 | } |
292 | return 1; |
293 | } |
294 | |
295 | return 0; |
296 | } /* End tw_decode_bits() */ |
297 | |
298 | /* This function will poll the status register for a flag */ |
299 | static int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) |
300 | { |
301 | u32 status_reg_value; |
302 | unsigned long before; |
303 | int retval = 1; |
304 | |
305 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
306 | before = jiffies; |
307 | |
308 | if (tw_check_bits(status_reg_value)) |
309 | tw_decode_bits(tw_dev, status_reg_value, print_host: 0); |
310 | |
311 | while ((status_reg_value & flag) != flag) { |
312 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
313 | |
314 | if (tw_check_bits(status_reg_value)) |
315 | tw_decode_bits(tw_dev, status_reg_value, print_host: 0); |
316 | |
317 | if (time_after(jiffies, before + HZ * seconds)) |
318 | goto out; |
319 | |
320 | msleep(msecs: 50); |
321 | } |
322 | retval = 0; |
323 | out: |
324 | return retval; |
325 | } /* End tw_poll_status() */ |
326 | |
327 | /* This function will poll the status register for disappearance of a flag */ |
328 | static int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) |
329 | { |
330 | u32 status_reg_value; |
331 | unsigned long before; |
332 | int retval = 1; |
333 | |
334 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
335 | before = jiffies; |
336 | |
337 | if (tw_check_bits(status_reg_value)) |
338 | tw_decode_bits(tw_dev, status_reg_value, print_host: 0); |
339 | |
340 | while ((status_reg_value & flag) != 0) { |
341 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
342 | |
343 | if (tw_check_bits(status_reg_value)) |
344 | tw_decode_bits(tw_dev, status_reg_value, print_host: 0); |
345 | |
346 | if (time_after(jiffies, before + HZ * seconds)) |
347 | goto out; |
348 | |
349 | msleep(msecs: 50); |
350 | } |
351 | retval = 0; |
352 | out: |
353 | return retval; |
354 | } /* End tw_poll_status_gone() */ |
355 | |
356 | /* This function will attempt to post a command packet to the board */ |
357 | static int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id) |
358 | { |
359 | u32 status_reg_value; |
360 | unsigned long command_que_value; |
361 | |
362 | dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n" ); |
363 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
364 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
365 | |
366 | if (tw_check_bits(status_reg_value)) { |
367 | dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n" ); |
368 | tw_decode_bits(tw_dev, status_reg_value, print_host: 1); |
369 | } |
370 | |
371 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { |
372 | /* We successfully posted the command packet */ |
373 | outl(value: command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
374 | tw_dev->state[request_id] = TW_S_POSTED; |
375 | tw_dev->posted_request_count++; |
376 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { |
377 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; |
378 | } |
379 | } else { |
380 | /* Couldn't post the command packet, so we do it in the isr */ |
381 | if (tw_dev->state[request_id] != TW_S_PENDING) { |
382 | tw_dev->state[request_id] = TW_S_PENDING; |
383 | tw_dev->pending_request_count++; |
384 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { |
385 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; |
386 | } |
387 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; |
388 | if (tw_dev->pending_tail == TW_Q_LENGTH-1) { |
389 | tw_dev->pending_tail = TW_Q_START; |
390 | } else { |
391 | tw_dev->pending_tail = tw_dev->pending_tail + 1; |
392 | } |
393 | } |
394 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); |
395 | return 1; |
396 | } |
397 | return 0; |
398 | } /* End tw_post_command_packet() */ |
399 | |
400 | /* This function will return valid sense buffer information for failed cmds */ |
401 | static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense) |
402 | { |
403 | int i; |
404 | TW_Command *command; |
405 | |
406 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n" ); |
407 | command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
408 | |
409 | printk(KERN_WARNING "3w-xxxx: scsi%d: Command failed: status = 0x%x, flags = 0x%x, unit #%d.\n" , tw_dev->host->host_no, command->status, command->flags, TW_UNIT_OUT(command->unit__hostid)); |
410 | |
411 | /* Attempt to return intelligent sense information */ |
412 | if (fill_sense) { |
413 | if ((command->status == 0xc7) || (command->status == 0xcb)) { |
414 | for (i = 0; i < ARRAY_SIZE(tw_sense_table); i++) { |
415 | if (command->flags == tw_sense_table[i][0]) { |
416 | |
417 | /* Valid bit and 'current errors' */ |
418 | tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70); |
419 | |
420 | /* Sense key */ |
421 | tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1]; |
422 | |
423 | /* Additional sense length */ |
424 | tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */ |
425 | |
426 | /* Additional sense code */ |
427 | tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2]; |
428 | |
429 | /* Additional sense code qualifier */ |
430 | tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3]; |
431 | |
432 | tw_dev->srb[request_id]->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; |
433 | return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */ |
434 | } |
435 | } |
436 | } |
437 | |
438 | /* If no table match, error so we get a reset */ |
439 | return 1; |
440 | } |
441 | |
442 | return 0; |
443 | } /* End tw_decode_sense() */ |
444 | |
445 | /* This function will report controller error status */ |
446 | static int tw_check_errors(TW_Device_Extension *tw_dev) |
447 | { |
448 | u32 status_reg_value; |
449 | |
450 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
451 | |
452 | if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) { |
453 | tw_decode_bits(tw_dev, status_reg_value, print_host: 0); |
454 | return 1; |
455 | } |
456 | |
457 | return 0; |
458 | } /* End tw_check_errors() */ |
459 | |
460 | /* This function will empty the response que */ |
461 | static void tw_empty_response_que(TW_Device_Extension *tw_dev) |
462 | { |
463 | u32 status_reg_value; |
464 | |
465 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
466 | |
467 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { |
468 | inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
469 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
470 | } |
471 | } /* End tw_empty_response_que() */ |
472 | |
473 | /* This function will free a request_id */ |
474 | static void tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id) |
475 | { |
476 | tw_dev->free_queue[tw_dev->free_tail] = request_id; |
477 | tw_dev->state[request_id] = TW_S_FINISHED; |
478 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; |
479 | } /* End tw_state_request_finish() */ |
480 | |
481 | /* This function will assign an available request_id */ |
482 | static void tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id) |
483 | { |
484 | *request_id = tw_dev->free_queue[tw_dev->free_head]; |
485 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; |
486 | tw_dev->state[*request_id] = TW_S_STARTED; |
487 | } /* End tw_state_request_start() */ |
488 | |
489 | /* Show some statistics about the card */ |
490 | static ssize_t tw_show_stats(struct device *dev, struct device_attribute *attr, |
491 | char *buf) |
492 | { |
493 | struct Scsi_Host *host = class_to_shost(dev); |
494 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
495 | unsigned long flags = 0; |
496 | ssize_t len; |
497 | |
498 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
499 | len = sysfs_emit(buf, fmt: "3w-xxxx Driver version: %s\n" |
500 | "Current commands posted: %4d\n" |
501 | "Max commands posted: %4d\n" |
502 | "Current pending commands: %4d\n" |
503 | "Max pending commands: %4d\n" |
504 | "Last sgl length: %4d\n" |
505 | "Max sgl length: %4d\n" |
506 | "Last sector count: %4d\n" |
507 | "Max sector count: %4d\n" |
508 | "SCSI Host Resets: %4d\n" |
509 | "AEN's: %4d\n" , |
510 | TW_DRIVER_VERSION, |
511 | tw_dev->posted_request_count, |
512 | tw_dev->max_posted_request_count, |
513 | tw_dev->pending_request_count, |
514 | tw_dev->max_pending_request_count, |
515 | tw_dev->sgl_entries, |
516 | tw_dev->max_sgl_entries, |
517 | tw_dev->sector_count, |
518 | tw_dev->max_sector_count, |
519 | tw_dev->num_resets, |
520 | tw_dev->aen_count); |
521 | spin_unlock_irqrestore(lock: tw_dev->host->host_lock, flags); |
522 | return len; |
523 | } /* End tw_show_stats() */ |
524 | |
525 | /* Create sysfs 'stats' entry */ |
526 | static struct device_attribute tw_host_stats_attr = { |
527 | .attr = { |
528 | .name = "stats" , |
529 | .mode = S_IRUGO, |
530 | }, |
531 | .show = tw_show_stats |
532 | }; |
533 | |
534 | /* Host attributes initializer */ |
535 | static struct attribute *tw_host_attrs[] = { |
536 | &tw_host_stats_attr.attr, |
537 | NULL, |
538 | }; |
539 | |
540 | ATTRIBUTE_GROUPS(tw_host); |
541 | |
542 | /* This function will read the aen queue from the isr */ |
543 | static int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) |
544 | { |
545 | TW_Command *command_packet; |
546 | TW_Param *param; |
547 | unsigned long command_que_value; |
548 | u32 status_reg_value; |
549 | unsigned long param_value = 0; |
550 | |
551 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_read_queue()\n" ); |
552 | |
553 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
554 | if (tw_check_bits(status_reg_value)) { |
555 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n" ); |
556 | tw_decode_bits(tw_dev, status_reg_value, print_host: 1); |
557 | return 1; |
558 | } |
559 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
560 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet virtual address.\n" ); |
561 | return 1; |
562 | } |
563 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
564 | memset(command_packet, 0, sizeof(TW_Sector)); |
565 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
566 | command_packet->size = 4; |
567 | command_packet->request_id = request_id; |
568 | command_packet->status = 0; |
569 | command_packet->flags = 0; |
570 | command_packet->byte6.parameter_count = 1; |
571 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
572 | if (command_que_value == 0) { |
573 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet physical address.\n" ); |
574 | return 1; |
575 | } |
576 | /* Now setup the param */ |
577 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
578 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment virtual address.\n" ); |
579 | return 1; |
580 | } |
581 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
582 | memset(param, 0, sizeof(TW_Sector)); |
583 | param->table_id = 0x401; /* AEN table */ |
584 | param->parameter_id = 2; /* Unit code */ |
585 | param->parameter_size_bytes = 2; |
586 | param_value = tw_dev->alignment_physical_address[request_id]; |
587 | if (param_value == 0) { |
588 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment physical address.\n" ); |
589 | return 1; |
590 | } |
591 | command_packet->byte8.param.sgl[0].address = param_value; |
592 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
593 | |
594 | /* Now post the command packet */ |
595 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { |
596 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n" ); |
597 | tw_dev->srb[request_id] = NULL; /* Flag internal command */ |
598 | tw_dev->state[request_id] = TW_S_POSTED; |
599 | outl(value: command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
600 | } else { |
601 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n" ); |
602 | return 1; |
603 | } |
604 | |
605 | return 0; |
606 | } /* End tw_aen_read_queue() */ |
607 | |
608 | /* This function will complete an aen request from the isr */ |
609 | static int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id) |
610 | { |
611 | TW_Param *param; |
612 | unsigned short aen; |
613 | int error = 0, table_max = 0; |
614 | |
615 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n" ); |
616 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
617 | printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n" ); |
618 | return 1; |
619 | } |
620 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
621 | aen = *(unsigned short *)(param->data); |
622 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n" , aen); |
623 | |
624 | /* Print some useful info when certain aen codes come out */ |
625 | if (aen == 0x0ff) { |
626 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n" , tw_dev->host->host_no); |
627 | } else { |
628 | table_max = ARRAY_SIZE(tw_aen_string); |
629 | if ((aen & 0x0ff) < table_max) { |
630 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { |
631 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n" , tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8); |
632 | } else { |
633 | if (aen != 0x0) |
634 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n" , tw_dev->host->host_no, tw_aen_string[aen & 0xff]); |
635 | } |
636 | } else { |
637 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n" , tw_dev->host->host_no, aen); |
638 | } |
639 | } |
640 | if (aen != TW_AEN_QUEUE_EMPTY) { |
641 | tw_dev->aen_count++; |
642 | |
643 | /* Now queue the code */ |
644 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; |
645 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { |
646 | tw_dev->aen_tail = TW_Q_START; |
647 | } else { |
648 | tw_dev->aen_tail = tw_dev->aen_tail + 1; |
649 | } |
650 | if (tw_dev->aen_head == tw_dev->aen_tail) { |
651 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
652 | tw_dev->aen_head = TW_Q_START; |
653 | } else { |
654 | tw_dev->aen_head = tw_dev->aen_head + 1; |
655 | } |
656 | } |
657 | |
658 | error = tw_aen_read_queue(tw_dev, request_id); |
659 | if (error) { |
660 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n" , tw_dev->host->host_no); |
661 | tw_dev->state[request_id] = TW_S_COMPLETED; |
662 | tw_state_request_finish(tw_dev, request_id); |
663 | } |
664 | } else { |
665 | tw_dev->state[request_id] = TW_S_COMPLETED; |
666 | tw_state_request_finish(tw_dev, request_id); |
667 | } |
668 | |
669 | return 0; |
670 | } /* End tw_aen_complete() */ |
671 | |
672 | /* This function will drain the aen queue after a soft reset */ |
673 | static int tw_aen_drain_queue(TW_Device_Extension *tw_dev) |
674 | { |
675 | TW_Command *command_packet; |
676 | TW_Param *param; |
677 | int request_id = 0; |
678 | unsigned long command_que_value; |
679 | unsigned long param_value; |
680 | TW_Response_Queue response_queue; |
681 | unsigned short aen; |
682 | unsigned short aen_code; |
683 | int finished = 0; |
684 | int first_reset = 0; |
685 | int queue = 0; |
686 | int found = 0, table_max = 0; |
687 | |
688 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n" ); |
689 | |
690 | if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, seconds: 30)) { |
691 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n" , tw_device_extension_count); |
692 | return 1; |
693 | } |
694 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); |
695 | |
696 | /* Empty response queue */ |
697 | tw_empty_response_que(tw_dev); |
698 | |
699 | /* Initialize command packet */ |
700 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
701 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n" ); |
702 | return 1; |
703 | } |
704 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
705 | memset(command_packet, 0, sizeof(TW_Sector)); |
706 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
707 | command_packet->size = 4; |
708 | command_packet->request_id = request_id; |
709 | command_packet->status = 0; |
710 | command_packet->flags = 0; |
711 | command_packet->byte6.parameter_count = 1; |
712 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
713 | if (command_que_value == 0) { |
714 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n" ); |
715 | return 1; |
716 | } |
717 | |
718 | /* Now setup the param */ |
719 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
720 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n" ); |
721 | return 1; |
722 | } |
723 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
724 | memset(param, 0, sizeof(TW_Sector)); |
725 | param->table_id = 0x401; /* AEN table */ |
726 | param->parameter_id = 2; /* Unit code */ |
727 | param->parameter_size_bytes = 2; |
728 | param_value = tw_dev->alignment_physical_address[request_id]; |
729 | if (param_value == 0) { |
730 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n" ); |
731 | return 1; |
732 | } |
733 | command_packet->byte8.param.sgl[0].address = param_value; |
734 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
735 | |
736 | /* Now drain the controller's aen queue */ |
737 | do { |
738 | /* Post command packet */ |
739 | outl(value: command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
740 | |
741 | /* Now poll for completion */ |
742 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds: 30) == 0) { |
743 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
744 | request_id = TW_RESID_OUT(response_queue.response_id); |
745 | |
746 | if (request_id != 0) { |
747 | /* Unexpected request id */ |
748 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n" ); |
749 | return 1; |
750 | } |
751 | |
752 | if (command_packet->status != 0) { |
753 | if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) { |
754 | /* Bad response */ |
755 | tw_decode_sense(tw_dev, request_id, fill_sense: 0); |
756 | return 1; |
757 | } else { |
758 | /* We know this is a 3w-1x00, and doesn't support aen's */ |
759 | return 0; |
760 | } |
761 | } |
762 | |
763 | /* Now check the aen */ |
764 | aen = *(unsigned short *)(param->data); |
765 | aen_code = (aen & 0x0ff); |
766 | queue = 0; |
767 | switch (aen_code) { |
768 | case TW_AEN_QUEUE_EMPTY: |
769 | dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n" , tw_aen_string[aen & 0xff]); |
770 | if (first_reset != 1) { |
771 | return 1; |
772 | } else { |
773 | finished = 1; |
774 | } |
775 | break; |
776 | case TW_AEN_SOFT_RESET: |
777 | if (first_reset == 0) { |
778 | first_reset = 1; |
779 | } else { |
780 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n" , tw_aen_string[aen & 0xff]); |
781 | tw_dev->aen_count++; |
782 | queue = 1; |
783 | } |
784 | break; |
785 | default: |
786 | if (aen == 0x0ff) { |
787 | printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n" ); |
788 | } else { |
789 | table_max = ARRAY_SIZE(tw_aen_string); |
790 | if ((aen & 0x0ff) < table_max) { |
791 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { |
792 | printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n" , tw_aen_string[aen & 0xff], aen >> 8); |
793 | } else { |
794 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n" , tw_aen_string[aen & 0xff]); |
795 | } |
796 | } else |
797 | printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n" , aen); |
798 | } |
799 | tw_dev->aen_count++; |
800 | queue = 1; |
801 | } |
802 | |
803 | /* Now put the aen on the aen_queue */ |
804 | if (queue == 1) { |
805 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; |
806 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { |
807 | tw_dev->aen_tail = TW_Q_START; |
808 | } else { |
809 | tw_dev->aen_tail = tw_dev->aen_tail + 1; |
810 | } |
811 | if (tw_dev->aen_head == tw_dev->aen_tail) { |
812 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
813 | tw_dev->aen_head = TW_Q_START; |
814 | } else { |
815 | tw_dev->aen_head = tw_dev->aen_head + 1; |
816 | } |
817 | } |
818 | } |
819 | found = 1; |
820 | } |
821 | if (found == 0) { |
822 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n" ); |
823 | return 1; |
824 | } |
825 | } while (finished == 0); |
826 | |
827 | return 0; |
828 | } /* End tw_aen_drain_queue() */ |
829 | |
830 | /* This function will allocate memory */ |
831 | static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) |
832 | { |
833 | int i; |
834 | dma_addr_t dma_handle; |
835 | unsigned long *cpu_addr = NULL; |
836 | |
837 | dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n" ); |
838 | |
839 | cpu_addr = dma_alloc_coherent(dev: &tw_dev->tw_pci_dev->dev, |
840 | size: size * TW_Q_LENGTH, dma_handle: &dma_handle, GFP_KERNEL); |
841 | if (cpu_addr == NULL) { |
842 | printk(KERN_WARNING "3w-xxxx: dma_alloc_coherent() failed.\n" ); |
843 | return 1; |
844 | } |
845 | |
846 | if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) { |
847 | printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n" ); |
848 | dma_free_coherent(dev: &tw_dev->tw_pci_dev->dev, size: size * TW_Q_LENGTH, |
849 | cpu_addr, dma_handle); |
850 | return 1; |
851 | } |
852 | |
853 | memset(cpu_addr, 0, size*TW_Q_LENGTH); |
854 | |
855 | for (i=0;i<TW_Q_LENGTH;i++) { |
856 | switch(which) { |
857 | case 0: |
858 | tw_dev->command_packet_physical_address[i] = dma_handle+(i*size); |
859 | tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); |
860 | break; |
861 | case 1: |
862 | tw_dev->alignment_physical_address[i] = dma_handle+(i*size); |
863 | tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); |
864 | break; |
865 | default: |
866 | printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n" ); |
867 | return 1; |
868 | } |
869 | } |
870 | |
871 | return 0; |
872 | } /* End tw_allocate_memory() */ |
873 | |
874 | /* This function handles ioctl for the character device */ |
875 | static long tw_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
876 | { |
877 | int request_id; |
878 | dma_addr_t dma_handle; |
879 | unsigned short tw_aen_code; |
880 | unsigned long flags; |
881 | unsigned int data_buffer_length = 0; |
882 | unsigned long data_buffer_length_adjusted = 0; |
883 | struct inode *inode = file_inode(f: file); |
884 | unsigned long *cpu_addr; |
885 | long timeout; |
886 | TW_New_Ioctl *tw_ioctl; |
887 | TW_Passthru *passthru; |
888 | TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)]; |
889 | int retval = -EFAULT; |
890 | void __user *argp = (void __user *)arg; |
891 | |
892 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n" ); |
893 | |
894 | mutex_lock(&tw_mutex); |
895 | /* Only let one of these through at a time */ |
896 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { |
897 | mutex_unlock(lock: &tw_mutex); |
898 | return -EINTR; |
899 | } |
900 | |
901 | /* First copy down the buffer length */ |
902 | if (copy_from_user(to: &data_buffer_length, from: argp, n: sizeof(unsigned int))) |
903 | goto out; |
904 | |
905 | /* Check size */ |
906 | if (data_buffer_length > TW_MAX_IOCTL_SECTORS * 512) { |
907 | retval = -EINVAL; |
908 | goto out; |
909 | } |
910 | |
911 | /* Hardware can only do multiple of 512 byte transfers */ |
912 | data_buffer_length_adjusted = (data_buffer_length + 511) & ~511; |
913 | |
914 | /* Now allocate ioctl buf memory */ |
915 | cpu_addr = dma_alloc_coherent(dev: &tw_dev->tw_pci_dev->dev, size: data_buffer_length_adjusted + sizeof(TW_New_Ioctl), dma_handle: &dma_handle, GFP_KERNEL); |
916 | if (cpu_addr == NULL) { |
917 | retval = -ENOMEM; |
918 | goto out; |
919 | } |
920 | |
921 | tw_ioctl = (TW_New_Ioctl *)cpu_addr; |
922 | |
923 | /* Now copy down the entire ioctl */ |
924 | if (copy_from_user(to: tw_ioctl, from: argp, n: data_buffer_length + sizeof(TW_New_Ioctl))) |
925 | goto out2; |
926 | |
927 | passthru = (TW_Passthru *)&tw_ioctl->firmware_command; |
928 | |
929 | /* See which ioctl we are doing */ |
930 | switch (cmd) { |
931 | case TW_OP_NOP: |
932 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_OP_NOP.\n" ); |
933 | break; |
934 | case TW_OP_AEN_LISTEN: |
935 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n" ); |
936 | memset(tw_ioctl->data_buffer, 0, data_buffer_length); |
937 | |
938 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
939 | if (tw_dev->aen_head == tw_dev->aen_tail) { |
940 | tw_aen_code = TW_AEN_QUEUE_EMPTY; |
941 | } else { |
942 | tw_aen_code = tw_dev->aen_queue[tw_dev->aen_head]; |
943 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { |
944 | tw_dev->aen_head = TW_Q_START; |
945 | } else { |
946 | tw_dev->aen_head = tw_dev->aen_head + 1; |
947 | } |
948 | } |
949 | spin_unlock_irqrestore(lock: tw_dev->host->host_lock, flags); |
950 | memcpy(tw_ioctl->data_buffer, &tw_aen_code, sizeof(tw_aen_code)); |
951 | break; |
952 | case TW_CMD_PACKET_WITH_DATA: |
953 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n" ); |
954 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
955 | |
956 | tw_state_request_start(tw_dev, request_id: &request_id); |
957 | |
958 | /* Flag internal command */ |
959 | tw_dev->srb[request_id] = NULL; |
960 | |
961 | /* Flag chrdev ioctl */ |
962 | tw_dev->chrdev_request_id = request_id; |
963 | |
964 | tw_ioctl->firmware_command.request_id = request_id; |
965 | |
966 | /* Load the sg list */ |
967 | switch (TW_SGL_OUT(tw_ioctl->firmware_command.opcode__sgloffset)) { |
968 | case 2: |
969 | tw_ioctl->firmware_command.byte8.param.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl); |
970 | tw_ioctl->firmware_command.byte8.param.sgl[0].length = data_buffer_length_adjusted; |
971 | break; |
972 | case 3: |
973 | tw_ioctl->firmware_command.byte8.io.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl); |
974 | tw_ioctl->firmware_command.byte8.io.sgl[0].length = data_buffer_length_adjusted; |
975 | break; |
976 | case 5: |
977 | passthru->sg_list[0].address = dma_handle + sizeof(TW_New_Ioctl); |
978 | passthru->sg_list[0].length = data_buffer_length_adjusted; |
979 | break; |
980 | } |
981 | |
982 | memcpy(tw_dev->command_packet_virtual_address[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command)); |
983 | |
984 | /* Now post the command packet to the controller */ |
985 | tw_post_command_packet(tw_dev, request_id); |
986 | spin_unlock_irqrestore(lock: tw_dev->host->host_lock, flags); |
987 | |
988 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; |
989 | |
990 | /* Now wait for the command to complete */ |
991 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); |
992 | |
993 | /* We timed out, and didn't get an interrupt */ |
994 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { |
995 | /* Now we need to reset the board */ |
996 | printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n" , tw_dev->host->host_no, cmd); |
997 | retval = -EIO; |
998 | if (tw_reset_device_extension(tw_dev)) { |
999 | printk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n" , tw_dev->host->host_no); |
1000 | } |
1001 | goto out2; |
1002 | } |
1003 | |
1004 | /* Now copy in the command packet response */ |
1005 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command)); |
1006 | |
1007 | /* Now complete the io */ |
1008 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
1009 | tw_dev->posted_request_count--; |
1010 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1011 | tw_state_request_finish(tw_dev, request_id); |
1012 | spin_unlock_irqrestore(lock: tw_dev->host->host_lock, flags); |
1013 | break; |
1014 | default: |
1015 | retval = -ENOTTY; |
1016 | goto out2; |
1017 | } |
1018 | |
1019 | /* Now copy the response to userspace */ |
1020 | if (copy_to_user(to: argp, from: tw_ioctl, n: sizeof(TW_New_Ioctl) + data_buffer_length)) |
1021 | goto out2; |
1022 | retval = 0; |
1023 | out2: |
1024 | /* Now free ioctl buf memory */ |
1025 | dma_free_coherent(dev: &tw_dev->tw_pci_dev->dev, size: data_buffer_length_adjusted + sizeof(TW_New_Ioctl), cpu_addr, dma_handle); |
1026 | out: |
1027 | mutex_unlock(lock: &tw_dev->ioctl_lock); |
1028 | mutex_unlock(lock: &tw_mutex); |
1029 | return retval; |
1030 | } /* End tw_chrdev_ioctl() */ |
1031 | |
1032 | /* This function handles open for the character device */ |
1033 | /* NOTE that this function races with remove. */ |
1034 | static int tw_chrdev_open(struct inode *inode, struct file *file) |
1035 | { |
1036 | unsigned int minor_number; |
1037 | |
1038 | dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n" ); |
1039 | |
1040 | if (!capable(CAP_SYS_ADMIN)) |
1041 | return -EACCES; |
1042 | |
1043 | minor_number = iminor(inode); |
1044 | if (minor_number >= tw_device_extension_count) |
1045 | return -ENODEV; |
1046 | |
1047 | return 0; |
1048 | } /* End tw_chrdev_open() */ |
1049 | |
1050 | /* File operations struct for character device */ |
1051 | static const struct file_operations tw_fops = { |
1052 | .owner = THIS_MODULE, |
1053 | .unlocked_ioctl = tw_chrdev_ioctl, |
1054 | .compat_ioctl = compat_ptr_ioctl, |
1055 | .open = tw_chrdev_open, |
1056 | .release = NULL, |
1057 | .llseek = noop_llseek, |
1058 | }; |
1059 | |
1060 | /* This function will free up device extension resources */ |
1061 | static void tw_free_device_extension(TW_Device_Extension *tw_dev) |
1062 | { |
1063 | dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n" ); |
1064 | |
1065 | /* Free command packet and generic buffer memory */ |
1066 | if (tw_dev->command_packet_virtual_address[0]) |
1067 | dma_free_coherent(dev: &tw_dev->tw_pci_dev->dev, |
1068 | size: sizeof(TW_Command) * TW_Q_LENGTH, |
1069 | cpu_addr: tw_dev->command_packet_virtual_address[0], |
1070 | dma_handle: tw_dev->command_packet_physical_address[0]); |
1071 | |
1072 | if (tw_dev->alignment_virtual_address[0]) |
1073 | dma_free_coherent(dev: &tw_dev->tw_pci_dev->dev, |
1074 | size: sizeof(TW_Sector) * TW_Q_LENGTH, |
1075 | cpu_addr: tw_dev->alignment_virtual_address[0], |
1076 | dma_handle: tw_dev->alignment_physical_address[0]); |
1077 | } /* End tw_free_device_extension() */ |
1078 | |
1079 | /* This function will send an initconnection command to controller */ |
1080 | static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits) |
1081 | { |
1082 | unsigned long command_que_value; |
1083 | TW_Command *command_packet; |
1084 | TW_Response_Queue response_queue; |
1085 | int request_id = 0; |
1086 | |
1087 | dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n" ); |
1088 | |
1089 | /* Initialize InitConnection command packet */ |
1090 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
1091 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n" ); |
1092 | return 1; |
1093 | } |
1094 | |
1095 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
1096 | memset(command_packet, 0, sizeof(TW_Sector)); |
1097 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION); |
1098 | command_packet->size = TW_INIT_COMMAND_PACKET_SIZE; |
1099 | command_packet->request_id = request_id; |
1100 | command_packet->status = 0x0; |
1101 | command_packet->flags = 0x0; |
1102 | command_packet->byte6.message_credits = message_credits; |
1103 | command_packet->byte8.init_connection.response_queue_pointer = 0x0; |
1104 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
1105 | |
1106 | if (command_que_value == 0) { |
1107 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n" ); |
1108 | return 1; |
1109 | } |
1110 | |
1111 | /* Send command packet to the board */ |
1112 | outl(value: command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
1113 | |
1114 | /* Poll for completion */ |
1115 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds: 30) == 0) { |
1116 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
1117 | request_id = TW_RESID_OUT(response_queue.response_id); |
1118 | |
1119 | if (request_id != 0) { |
1120 | /* unexpected request id */ |
1121 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n" ); |
1122 | return 1; |
1123 | } |
1124 | if (command_packet->status != 0) { |
1125 | /* bad response */ |
1126 | tw_decode_sense(tw_dev, request_id, fill_sense: 0); |
1127 | return 1; |
1128 | } |
1129 | } |
1130 | return 0; |
1131 | } /* End tw_initconnection() */ |
1132 | |
1133 | /* Set a value in the features table */ |
1134 | static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size, |
1135 | unsigned char *val) |
1136 | { |
1137 | TW_Param *param; |
1138 | TW_Command *command_packet; |
1139 | TW_Response_Queue response_queue; |
1140 | int request_id = 0; |
1141 | unsigned long command_que_value; |
1142 | unsigned long param_value; |
1143 | |
1144 | /* Initialize SetParam command packet */ |
1145 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { |
1146 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n" ); |
1147 | return 1; |
1148 | } |
1149 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
1150 | memset(command_packet, 0, sizeof(TW_Sector)); |
1151 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1152 | |
1153 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); |
1154 | param->table_id = 0x404; /* Features table */ |
1155 | param->parameter_id = parm; |
1156 | param->parameter_size_bytes = param_size; |
1157 | memcpy(param->data, val, param_size); |
1158 | |
1159 | param_value = tw_dev->alignment_physical_address[request_id]; |
1160 | if (param_value == 0) { |
1161 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad alignment physical address.\n" ); |
1162 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1163 | tw_state_request_finish(tw_dev, request_id); |
1164 | tw_dev->srb[request_id]->result = (DID_OK << 16); |
1165 | scsi_done(cmd: tw_dev->srb[request_id]); |
1166 | } |
1167 | command_packet->byte8.param.sgl[0].address = param_value; |
1168 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
1169 | |
1170 | command_packet->size = 4; |
1171 | command_packet->request_id = request_id; |
1172 | command_packet->byte6.parameter_count = 1; |
1173 | |
1174 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
1175 | if (command_que_value == 0) { |
1176 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n" ); |
1177 | return 1; |
1178 | } |
1179 | |
1180 | /* Send command packet to the board */ |
1181 | outl(value: command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); |
1182 | |
1183 | /* Poll for completion */ |
1184 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, seconds: 30) == 0) { |
1185 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
1186 | request_id = TW_RESID_OUT(response_queue.response_id); |
1187 | |
1188 | if (request_id != 0) { |
1189 | /* unexpected request id */ |
1190 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n" ); |
1191 | return 1; |
1192 | } |
1193 | if (command_packet->status != 0) { |
1194 | /* bad response */ |
1195 | tw_decode_sense(tw_dev, request_id, fill_sense: 0); |
1196 | return 1; |
1197 | } |
1198 | } |
1199 | |
1200 | return 0; |
1201 | } /* End tw_setfeature() */ |
1202 | |
1203 | /* This function will reset a controller */ |
1204 | static int tw_reset_sequence(TW_Device_Extension *tw_dev) |
1205 | { |
1206 | int error = 0; |
1207 | int tries = 0; |
1208 | unsigned char c = 1; |
1209 | |
1210 | /* Reset the board */ |
1211 | while (tries < TW_MAX_RESET_TRIES) { |
1212 | TW_SOFT_RESET(tw_dev); |
1213 | |
1214 | error = tw_aen_drain_queue(tw_dev); |
1215 | if (error) { |
1216 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n" , tw_dev->host->host_no); |
1217 | tries++; |
1218 | continue; |
1219 | } |
1220 | |
1221 | /* Check for controller errors */ |
1222 | if (tw_check_errors(tw_dev)) { |
1223 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n" , tw_dev->host->host_no); |
1224 | tries++; |
1225 | continue; |
1226 | } |
1227 | |
1228 | /* Now the controller is in a good state */ |
1229 | break; |
1230 | } |
1231 | |
1232 | if (tries >= TW_MAX_RESET_TRIES) { |
1233 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n" , tw_dev->host->host_no); |
1234 | return 1; |
1235 | } |
1236 | |
1237 | error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS); |
1238 | if (error) { |
1239 | printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n" , tw_dev->host->host_no); |
1240 | return 1; |
1241 | } |
1242 | |
1243 | error = tw_setfeature(tw_dev, parm: 2, param_size: 1, val: &c); |
1244 | if (error) { |
1245 | printk(KERN_WARNING "3w-xxxx: Unable to set features for card, probable old firmware or card.\n" ); |
1246 | } |
1247 | |
1248 | return 0; |
1249 | } /* End tw_reset_sequence() */ |
1250 | |
1251 | /* This function will initialize the fields of a device extension */ |
1252 | static int tw_initialize_device_extension(TW_Device_Extension *tw_dev) |
1253 | { |
1254 | int i, error=0; |
1255 | |
1256 | dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_device_extension()\n" ); |
1257 | |
1258 | /* Initialize command packet buffers */ |
1259 | error = tw_allocate_memory(tw_dev, size: sizeof(TW_Command), which: 0); |
1260 | if (error) { |
1261 | printk(KERN_WARNING "3w-xxxx: Command packet memory allocation failed.\n" ); |
1262 | return 1; |
1263 | } |
1264 | |
1265 | /* Initialize generic buffer */ |
1266 | error = tw_allocate_memory(tw_dev, size: sizeof(TW_Sector), which: 1); |
1267 | if (error) { |
1268 | printk(KERN_WARNING "3w-xxxx: Generic memory allocation failed.\n" ); |
1269 | return 1; |
1270 | } |
1271 | |
1272 | for (i=0;i<TW_Q_LENGTH;i++) { |
1273 | tw_dev->free_queue[i] = i; |
1274 | tw_dev->state[i] = TW_S_INITIAL; |
1275 | } |
1276 | |
1277 | tw_dev->pending_head = TW_Q_START; |
1278 | tw_dev->pending_tail = TW_Q_START; |
1279 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
1280 | |
1281 | mutex_init(&tw_dev->ioctl_lock); |
1282 | init_waitqueue_head(&tw_dev->ioctl_wqueue); |
1283 | |
1284 | return 0; |
1285 | } /* End tw_initialize_device_extension() */ |
1286 | |
1287 | /* This function will reset a device extension */ |
1288 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev) |
1289 | { |
1290 | int i = 0; |
1291 | struct scsi_cmnd *srb; |
1292 | unsigned long flags = 0; |
1293 | |
1294 | dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n" ); |
1295 | |
1296 | set_bit(TW_IN_RESET, addr: &tw_dev->flags); |
1297 | TW_DISABLE_INTERRUPTS(tw_dev); |
1298 | TW_MASK_COMMAND_INTERRUPT(tw_dev); |
1299 | spin_lock_irqsave(tw_dev->host->host_lock, flags); |
1300 | |
1301 | /* Abort all requests that are in progress */ |
1302 | for (i=0;i<TW_Q_LENGTH;i++) { |
1303 | if ((tw_dev->state[i] != TW_S_FINISHED) && |
1304 | (tw_dev->state[i] != TW_S_INITIAL) && |
1305 | (tw_dev->state[i] != TW_S_COMPLETED)) { |
1306 | srb = tw_dev->srb[i]; |
1307 | if (srb != NULL) { |
1308 | srb->result = (DID_RESET << 16); |
1309 | scsi_dma_unmap(cmd: srb); |
1310 | scsi_done(cmd: srb); |
1311 | } |
1312 | } |
1313 | } |
1314 | |
1315 | /* Reset queues and counts */ |
1316 | for (i=0;i<TW_Q_LENGTH;i++) { |
1317 | tw_dev->free_queue[i] = i; |
1318 | tw_dev->state[i] = TW_S_INITIAL; |
1319 | } |
1320 | tw_dev->free_head = TW_Q_START; |
1321 | tw_dev->free_tail = TW_Q_START; |
1322 | tw_dev->posted_request_count = 0; |
1323 | tw_dev->pending_request_count = 0; |
1324 | tw_dev->pending_head = TW_Q_START; |
1325 | tw_dev->pending_tail = TW_Q_START; |
1326 | tw_dev->reset_print = 0; |
1327 | |
1328 | spin_unlock_irqrestore(lock: tw_dev->host->host_lock, flags); |
1329 | |
1330 | if (tw_reset_sequence(tw_dev)) { |
1331 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n" , tw_dev->host->host_no); |
1332 | return 1; |
1333 | } |
1334 | |
1335 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
1336 | clear_bit(TW_IN_RESET, addr: &tw_dev->flags); |
1337 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
1338 | |
1339 | return 0; |
1340 | } /* End tw_reset_device_extension() */ |
1341 | |
1342 | /* This funciton returns unit geometry in cylinders/heads/sectors */ |
1343 | static int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, |
1344 | sector_t capacity, int geom[]) |
1345 | { |
1346 | int heads, sectors, cylinders; |
1347 | |
1348 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n" ); |
1349 | |
1350 | heads = 64; |
1351 | sectors = 32; |
1352 | cylinders = sector_div(capacity, heads * sectors); |
1353 | |
1354 | if (capacity >= 0x200000) { |
1355 | heads = 255; |
1356 | sectors = 63; |
1357 | cylinders = sector_div(capacity, heads * sectors); |
1358 | } |
1359 | |
1360 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n" , heads, sectors, cylinders); |
1361 | geom[0] = heads; |
1362 | geom[1] = sectors; |
1363 | geom[2] = cylinders; |
1364 | |
1365 | return 0; |
1366 | } /* End tw_scsi_biosparam() */ |
1367 | |
1368 | /* This is the new scsi eh reset function */ |
1369 | static int tw_scsi_eh_reset(struct scsi_cmnd *SCpnt) |
1370 | { |
1371 | TW_Device_Extension *tw_dev=NULL; |
1372 | int retval = FAILED; |
1373 | |
1374 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; |
1375 | |
1376 | tw_dev->num_resets++; |
1377 | |
1378 | sdev_printk(KERN_WARNING, SCpnt->device, |
1379 | "WARNING: Command (0x%x) timed out, resetting card.\n" , |
1380 | SCpnt->cmnd[0]); |
1381 | |
1382 | /* Make sure we are not issuing an ioctl or resetting from ioctl */ |
1383 | mutex_lock(&tw_dev->ioctl_lock); |
1384 | |
1385 | /* Now reset the card and some of the device extension data */ |
1386 | if (tw_reset_device_extension(tw_dev)) { |
1387 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n" , tw_dev->host->host_no); |
1388 | goto out; |
1389 | } |
1390 | |
1391 | retval = SUCCESS; |
1392 | out: |
1393 | mutex_unlock(lock: &tw_dev->ioctl_lock); |
1394 | return retval; |
1395 | } /* End tw_scsi_eh_reset() */ |
1396 | |
1397 | /* This function handles scsi inquiry commands */ |
1398 | static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id) |
1399 | { |
1400 | TW_Param *param; |
1401 | TW_Command *command_packet; |
1402 | unsigned long command_que_value; |
1403 | unsigned long param_value; |
1404 | |
1405 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n" ); |
1406 | |
1407 | /* Initialize command packet */ |
1408 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
1409 | if (command_packet == NULL) { |
1410 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n" ); |
1411 | return 1; |
1412 | } |
1413 | memset(command_packet, 0, sizeof(TW_Sector)); |
1414 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
1415 | command_packet->size = 4; |
1416 | command_packet->request_id = request_id; |
1417 | command_packet->status = 0; |
1418 | command_packet->flags = 0; |
1419 | command_packet->byte6.parameter_count = 1; |
1420 | |
1421 | /* Now setup the param */ |
1422 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
1423 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n" ); |
1424 | return 1; |
1425 | } |
1426 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1427 | memset(param, 0, sizeof(TW_Sector)); |
1428 | param->table_id = 3; /* unit summary table */ |
1429 | param->parameter_id = 3; /* unitsstatus parameter */ |
1430 | param->parameter_size_bytes = TW_MAX_UNITS; |
1431 | param_value = tw_dev->alignment_physical_address[request_id]; |
1432 | if (param_value == 0) { |
1433 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n" ); |
1434 | return 1; |
1435 | } |
1436 | |
1437 | command_packet->byte8.param.sgl[0].address = param_value; |
1438 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
1439 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
1440 | if (command_que_value == 0) { |
1441 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n" ); |
1442 | return 1; |
1443 | } |
1444 | |
1445 | /* Now try to post the command packet */ |
1446 | tw_post_command_packet(tw_dev, request_id); |
1447 | |
1448 | return 0; |
1449 | } /* End tw_scsiop_inquiry() */ |
1450 | |
1451 | static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id, |
1452 | void *data, unsigned int len) |
1453 | { |
1454 | scsi_sg_copy_from_buffer(cmd: tw_dev->srb[request_id], buf: data, buflen: len); |
1455 | } |
1456 | |
1457 | /* This function is called by the isr to complete an inquiry command */ |
1458 | static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id) |
1459 | { |
1460 | unsigned char *is_unit_present; |
1461 | unsigned char request_buffer[36]; |
1462 | TW_Param *param; |
1463 | |
1464 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n" ); |
1465 | |
1466 | memset(request_buffer, 0, sizeof(request_buffer)); |
1467 | request_buffer[0] = TYPE_DISK; /* Peripheral device type */ |
1468 | request_buffer[1] = 0; /* Device type modifier */ |
1469 | request_buffer[2] = 0; /* No ansi/iso compliance */ |
1470 | request_buffer[4] = 31; /* Additional length */ |
1471 | memcpy(&request_buffer[8], "3ware " , 8); /* Vendor ID */ |
1472 | sprintf(buf: &request_buffer[16], fmt: "Logical Disk %-2d " , tw_dev->srb[request_id]->device->id); |
1473 | memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3); |
1474 | tw_transfer_internal(tw_dev, request_id, data: request_buffer, |
1475 | len: sizeof(request_buffer)); |
1476 | |
1477 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1478 | if (param == NULL) { |
1479 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n" ); |
1480 | return 1; |
1481 | } |
1482 | is_unit_present = &(param->data[0]); |
1483 | |
1484 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { |
1485 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; |
1486 | } else { |
1487 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; |
1488 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); |
1489 | return TW_ISR_DONT_RESULT; |
1490 | } |
1491 | |
1492 | return 0; |
1493 | } /* End tw_scsiop_inquiry_complete() */ |
1494 | |
1495 | /* This function handles scsi mode_sense commands */ |
1496 | static int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id) |
1497 | { |
1498 | TW_Param *param; |
1499 | TW_Command *command_packet; |
1500 | unsigned long command_que_value; |
1501 | unsigned long param_value; |
1502 | |
1503 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n" ); |
1504 | |
1505 | /* Only page control = 0, page code = 0x8 (cache page) supported */ |
1506 | if (tw_dev->srb[request_id]->cmnd[2] != 0x8) { |
1507 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1508 | tw_state_request_finish(tw_dev, request_id); |
1509 | tw_dev->srb[request_id]->result = (DID_OK << 16); |
1510 | scsi_done(cmd: tw_dev->srb[request_id]); |
1511 | return 0; |
1512 | } |
1513 | |
1514 | /* Now read firmware cache setting for this unit */ |
1515 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
1516 | if (command_packet == NULL) { |
1517 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n" ); |
1518 | return 1; |
1519 | } |
1520 | |
1521 | /* Setup the command packet */ |
1522 | memset(command_packet, 0, sizeof(TW_Sector)); |
1523 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
1524 | command_packet->size = 4; |
1525 | command_packet->request_id = request_id; |
1526 | command_packet->status = 0; |
1527 | command_packet->flags = 0; |
1528 | command_packet->byte6.parameter_count = 1; |
1529 | |
1530 | /* Setup the param */ |
1531 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
1532 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n" ); |
1533 | return 1; |
1534 | } |
1535 | |
1536 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1537 | memset(param, 0, sizeof(TW_Sector)); |
1538 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id; |
1539 | param->parameter_id = 7; /* unit flags */ |
1540 | param->parameter_size_bytes = 1; |
1541 | param_value = tw_dev->alignment_physical_address[request_id]; |
1542 | if (param_value == 0) { |
1543 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n" ); |
1544 | return 1; |
1545 | } |
1546 | |
1547 | command_packet->byte8.param.sgl[0].address = param_value; |
1548 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
1549 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
1550 | if (command_que_value == 0) { |
1551 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n" ); |
1552 | return 1; |
1553 | } |
1554 | |
1555 | /* Now try to post the command packet */ |
1556 | tw_post_command_packet(tw_dev, request_id); |
1557 | |
1558 | return 0; |
1559 | } /* End tw_scsiop_mode_sense() */ |
1560 | |
1561 | /* This function is called by the isr to complete a mode sense command */ |
1562 | static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id) |
1563 | { |
1564 | TW_Param *param; |
1565 | unsigned char *flags; |
1566 | unsigned char request_buffer[8]; |
1567 | |
1568 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n" ); |
1569 | |
1570 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1571 | if (param == NULL) { |
1572 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n" ); |
1573 | return 1; |
1574 | } |
1575 | flags = (char *)&(param->data[0]); |
1576 | memset(request_buffer, 0, sizeof(request_buffer)); |
1577 | |
1578 | request_buffer[0] = 0xf; /* mode data length */ |
1579 | request_buffer[1] = 0; /* default medium type */ |
1580 | request_buffer[2] = 0x10; /* dpo/fua support on */ |
1581 | request_buffer[3] = 0; /* no block descriptors */ |
1582 | request_buffer[4] = 0x8; /* caching page */ |
1583 | request_buffer[5] = 0xa; /* page length */ |
1584 | if (*flags & 0x1) |
1585 | request_buffer[6] = 0x5; /* WCE on, RCD on */ |
1586 | else |
1587 | request_buffer[6] = 0x1; /* WCE off, RCD on */ |
1588 | tw_transfer_internal(tw_dev, request_id, data: request_buffer, |
1589 | len: sizeof(request_buffer)); |
1590 | |
1591 | return 0; |
1592 | } /* End tw_scsiop_mode_sense_complete() */ |
1593 | |
1594 | /* This function handles scsi read_capacity commands */ |
1595 | static int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id) |
1596 | { |
1597 | TW_Param *param; |
1598 | TW_Command *command_packet; |
1599 | unsigned long command_que_value; |
1600 | unsigned long param_value; |
1601 | |
1602 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n" ); |
1603 | |
1604 | /* Initialize command packet */ |
1605 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
1606 | |
1607 | if (command_packet == NULL) { |
1608 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n" ); |
1609 | return 1; |
1610 | } |
1611 | memset(command_packet, 0, sizeof(TW_Sector)); |
1612 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
1613 | command_packet->size = 4; |
1614 | command_packet->request_id = request_id; |
1615 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); |
1616 | command_packet->status = 0; |
1617 | command_packet->flags = 0; |
1618 | command_packet->byte6.block_count = 1; |
1619 | |
1620 | /* Now setup the param */ |
1621 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
1622 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n" ); |
1623 | return 1; |
1624 | } |
1625 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1626 | memset(param, 0, sizeof(TW_Sector)); |
1627 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + |
1628 | tw_dev->srb[request_id]->device->id; |
1629 | param->parameter_id = 4; /* unitcapacity parameter */ |
1630 | param->parameter_size_bytes = 4; |
1631 | param_value = tw_dev->alignment_physical_address[request_id]; |
1632 | if (param_value == 0) { |
1633 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n" ); |
1634 | return 1; |
1635 | } |
1636 | |
1637 | command_packet->byte8.param.sgl[0].address = param_value; |
1638 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
1639 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
1640 | if (command_que_value == 0) { |
1641 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n" ); |
1642 | return 1; |
1643 | } |
1644 | |
1645 | /* Now try to post the command to the board */ |
1646 | tw_post_command_packet(tw_dev, request_id); |
1647 | |
1648 | return 0; |
1649 | } /* End tw_scsiop_read_capacity() */ |
1650 | |
1651 | /* This function is called by the isr to complete a readcapacity command */ |
1652 | static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id) |
1653 | { |
1654 | unsigned char *param_data; |
1655 | u32 capacity; |
1656 | char buff[8]; |
1657 | TW_Param *param; |
1658 | |
1659 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n" ); |
1660 | |
1661 | memset(buff, 0, sizeof(buff)); |
1662 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1663 | if (param == NULL) { |
1664 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n" ); |
1665 | return 1; |
1666 | } |
1667 | param_data = &(param->data[0]); |
1668 | |
1669 | capacity = (param_data[3] << 24) | (param_data[2] << 16) | |
1670 | (param_data[1] << 8) | param_data[0]; |
1671 | |
1672 | /* Subtract one sector to fix get last sector ioctl */ |
1673 | capacity -= 1; |
1674 | |
1675 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n" , capacity); |
1676 | |
1677 | /* Number of LBA's */ |
1678 | buff[0] = (capacity >> 24); |
1679 | buff[1] = (capacity >> 16) & 0xff; |
1680 | buff[2] = (capacity >> 8) & 0xff; |
1681 | buff[3] = capacity & 0xff; |
1682 | |
1683 | /* Block size in bytes (512) */ |
1684 | buff[4] = (TW_BLOCK_SIZE >> 24); |
1685 | buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff; |
1686 | buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff; |
1687 | buff[7] = TW_BLOCK_SIZE & 0xff; |
1688 | |
1689 | tw_transfer_internal(tw_dev, request_id, data: buff, len: sizeof(buff)); |
1690 | |
1691 | return 0; |
1692 | } /* End tw_scsiop_read_capacity_complete() */ |
1693 | |
1694 | /* This function handles scsi read or write commands */ |
1695 | static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id) |
1696 | { |
1697 | TW_Command *command_packet; |
1698 | unsigned long command_que_value; |
1699 | u32 lba = 0x0, num_sectors = 0x0; |
1700 | int i, use_sg; |
1701 | struct scsi_cmnd *srb; |
1702 | struct scatterlist *sglist, *sg; |
1703 | |
1704 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n" ); |
1705 | |
1706 | srb = tw_dev->srb[request_id]; |
1707 | |
1708 | sglist = scsi_sglist(cmd: srb); |
1709 | if (!sglist) { |
1710 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n" ); |
1711 | return 1; |
1712 | } |
1713 | |
1714 | /* Initialize command packet */ |
1715 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
1716 | if (command_packet == NULL) { |
1717 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n" ); |
1718 | return 1; |
1719 | } |
1720 | |
1721 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) { |
1722 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_READ); |
1723 | } else { |
1724 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_WRITE); |
1725 | } |
1726 | |
1727 | command_packet->size = 3; |
1728 | command_packet->request_id = request_id; |
1729 | command_packet->unit__hostid = TW_UNITHOST_IN(0, srb->device->id); |
1730 | command_packet->status = 0; |
1731 | command_packet->flags = 0; |
1732 | |
1733 | if (srb->cmnd[0] == WRITE_10) { |
1734 | if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10)) |
1735 | command_packet->flags = 1; |
1736 | } |
1737 | |
1738 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) { |
1739 | lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3]; |
1740 | num_sectors = (u32)srb->cmnd[4]; |
1741 | } else { |
1742 | lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5]; |
1743 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); |
1744 | } |
1745 | |
1746 | /* Update sector statistic */ |
1747 | tw_dev->sector_count = num_sectors; |
1748 | if (tw_dev->sector_count > tw_dev->max_sector_count) |
1749 | tw_dev->max_sector_count = tw_dev->sector_count; |
1750 | |
1751 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n" , lba, num_sectors); |
1752 | command_packet->byte8.io.lba = lba; |
1753 | command_packet->byte6.block_count = num_sectors; |
1754 | |
1755 | use_sg = scsi_dma_map(cmd: srb); |
1756 | if (use_sg <= 0) |
1757 | return 1; |
1758 | |
1759 | scsi_for_each_sg(tw_dev->srb[request_id], sg, use_sg, i) { |
1760 | command_packet->byte8.io.sgl[i].address = sg_dma_address(sg); |
1761 | command_packet->byte8.io.sgl[i].length = sg_dma_len(sg); |
1762 | command_packet->size+=2; |
1763 | } |
1764 | |
1765 | /* Update SG statistics */ |
1766 | tw_dev->sgl_entries = scsi_sg_count(cmd: tw_dev->srb[request_id]); |
1767 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) |
1768 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; |
1769 | |
1770 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
1771 | if (command_que_value == 0) { |
1772 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n" ); |
1773 | return 1; |
1774 | } |
1775 | |
1776 | /* Now try to post the command to the board */ |
1777 | tw_post_command_packet(tw_dev, request_id); |
1778 | |
1779 | return 0; |
1780 | } /* End tw_scsiop_read_write() */ |
1781 | |
1782 | /* This function will handle the request sense scsi command */ |
1783 | static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id) |
1784 | { |
1785 | char request_buffer[18]; |
1786 | |
1787 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n" ); |
1788 | |
1789 | memset(request_buffer, 0, sizeof(request_buffer)); |
1790 | request_buffer[0] = 0x70; /* Immediate fixed format */ |
1791 | request_buffer[7] = 10; /* minimum size per SPC: 18 bytes */ |
1792 | /* leave all other fields zero, giving effectively NO_SENSE return */ |
1793 | tw_transfer_internal(tw_dev, request_id, data: request_buffer, |
1794 | len: sizeof(request_buffer)); |
1795 | |
1796 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1797 | tw_state_request_finish(tw_dev, request_id); |
1798 | |
1799 | /* If we got a request_sense, we probably want a reset, return error */ |
1800 | tw_dev->srb[request_id]->result = (DID_ERROR << 16); |
1801 | scsi_done(cmd: tw_dev->srb[request_id]); |
1802 | |
1803 | return 0; |
1804 | } /* End tw_scsiop_request_sense() */ |
1805 | |
1806 | /* This function will handle synchronize cache scsi command */ |
1807 | static int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id) |
1808 | { |
1809 | TW_Command *command_packet; |
1810 | unsigned long command_que_value; |
1811 | |
1812 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n" ); |
1813 | |
1814 | /* Send firmware flush command for this unit */ |
1815 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
1816 | if (command_packet == NULL) { |
1817 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n" ); |
1818 | return 1; |
1819 | } |
1820 | |
1821 | /* Setup the command packet */ |
1822 | memset(command_packet, 0, sizeof(TW_Sector)); |
1823 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE); |
1824 | command_packet->size = 2; |
1825 | command_packet->request_id = request_id; |
1826 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); |
1827 | command_packet->status = 0; |
1828 | command_packet->flags = 0; |
1829 | command_packet->byte6.parameter_count = 1; |
1830 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
1831 | if (command_que_value == 0) { |
1832 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n" ); |
1833 | return 1; |
1834 | } |
1835 | |
1836 | /* Now try to post the command packet */ |
1837 | tw_post_command_packet(tw_dev, request_id); |
1838 | |
1839 | return 0; |
1840 | } /* End tw_scsiop_synchronize_cache() */ |
1841 | |
1842 | /* This function will handle test unit ready scsi command */ |
1843 | static int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id) |
1844 | { |
1845 | TW_Param *param; |
1846 | TW_Command *command_packet; |
1847 | unsigned long command_que_value; |
1848 | unsigned long param_value; |
1849 | |
1850 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n" ); |
1851 | |
1852 | /* Initialize command packet */ |
1853 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
1854 | if (command_packet == NULL) { |
1855 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n" ); |
1856 | return 1; |
1857 | } |
1858 | memset(command_packet, 0, sizeof(TW_Sector)); |
1859 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); |
1860 | command_packet->size = 4; |
1861 | command_packet->request_id = request_id; |
1862 | command_packet->status = 0; |
1863 | command_packet->flags = 0; |
1864 | command_packet->byte6.parameter_count = 1; |
1865 | |
1866 | /* Now setup the param */ |
1867 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { |
1868 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n" ); |
1869 | return 1; |
1870 | } |
1871 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1872 | memset(param, 0, sizeof(TW_Sector)); |
1873 | param->table_id = 3; /* unit summary table */ |
1874 | param->parameter_id = 3; /* unitsstatus parameter */ |
1875 | param->parameter_size_bytes = TW_MAX_UNITS; |
1876 | param_value = tw_dev->alignment_physical_address[request_id]; |
1877 | if (param_value == 0) { |
1878 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n" ); |
1879 | return 1; |
1880 | } |
1881 | |
1882 | command_packet->byte8.param.sgl[0].address = param_value; |
1883 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); |
1884 | command_que_value = tw_dev->command_packet_physical_address[request_id]; |
1885 | if (command_que_value == 0) { |
1886 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n" ); |
1887 | return 1; |
1888 | } |
1889 | |
1890 | /* Now try to post the command packet */ |
1891 | tw_post_command_packet(tw_dev, request_id); |
1892 | |
1893 | return 0; |
1894 | } /* End tw_scsiop_test_unit_ready() */ |
1895 | |
1896 | /* This function is called by the isr to complete a testunitready command */ |
1897 | static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id) |
1898 | { |
1899 | unsigned char *is_unit_present; |
1900 | TW_Param *param; |
1901 | |
1902 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n" ); |
1903 | |
1904 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1905 | if (param == NULL) { |
1906 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n" ); |
1907 | return 1; |
1908 | } |
1909 | is_unit_present = &(param->data[0]); |
1910 | |
1911 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { |
1912 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; |
1913 | } else { |
1914 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; |
1915 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); |
1916 | return TW_ISR_DONT_RESULT; |
1917 | } |
1918 | |
1919 | return 0; |
1920 | } /* End tw_scsiop_test_unit_ready_complete() */ |
1921 | |
1922 | /* This is the main scsi queue function to handle scsi opcodes */ |
1923 | static int tw_scsi_queue_lck(struct scsi_cmnd *SCpnt) |
1924 | { |
1925 | void (*done)(struct scsi_cmnd *) = scsi_done; |
1926 | unsigned char *command = SCpnt->cmnd; |
1927 | int request_id = 0; |
1928 | int retval = 1; |
1929 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; |
1930 | |
1931 | /* If we are resetting due to timed out ioctl, report as busy */ |
1932 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) |
1933 | return SCSI_MLQUEUE_HOST_BUSY; |
1934 | |
1935 | /* Queue the command and get a request id */ |
1936 | tw_state_request_start(tw_dev, request_id: &request_id); |
1937 | |
1938 | /* Save the scsi command for use by the ISR */ |
1939 | tw_dev->srb[request_id] = SCpnt; |
1940 | |
1941 | switch (*command) { |
1942 | case READ_10: |
1943 | case READ_6: |
1944 | case WRITE_10: |
1945 | case WRITE_6: |
1946 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n" ); |
1947 | retval = tw_scsiop_read_write(tw_dev, request_id); |
1948 | break; |
1949 | case TEST_UNIT_READY: |
1950 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n" ); |
1951 | retval = tw_scsiop_test_unit_ready(tw_dev, request_id); |
1952 | break; |
1953 | case INQUIRY: |
1954 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n" ); |
1955 | retval = tw_scsiop_inquiry(tw_dev, request_id); |
1956 | break; |
1957 | case READ_CAPACITY: |
1958 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n" ); |
1959 | retval = tw_scsiop_read_capacity(tw_dev, request_id); |
1960 | break; |
1961 | case REQUEST_SENSE: |
1962 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n" ); |
1963 | retval = tw_scsiop_request_sense(tw_dev, request_id); |
1964 | break; |
1965 | case MODE_SENSE: |
1966 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n" ); |
1967 | retval = tw_scsiop_mode_sense(tw_dev, request_id); |
1968 | break; |
1969 | case SYNCHRONIZE_CACHE: |
1970 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n" ); |
1971 | retval = tw_scsiop_synchronize_cache(tw_dev, request_id); |
1972 | break; |
1973 | case TW_IOCTL: |
1974 | printk(KERN_WARNING "3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n" ); |
1975 | break; |
1976 | default: |
1977 | printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n" , tw_dev->host->host_no, *command); |
1978 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1979 | tw_state_request_finish(tw_dev, request_id); |
1980 | scsi_build_sense(scmd: SCpnt, desc: 1, ILLEGAL_REQUEST, asc: 0x20, ascq: 0); |
1981 | done(SCpnt); |
1982 | retval = 0; |
1983 | } |
1984 | if (retval) { |
1985 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1986 | tw_state_request_finish(tw_dev, request_id); |
1987 | SCpnt->result = (DID_ERROR << 16); |
1988 | done(SCpnt); |
1989 | retval = 0; |
1990 | } |
1991 | return retval; |
1992 | } /* End tw_scsi_queue() */ |
1993 | |
1994 | static DEF_SCSI_QCMD(tw_scsi_queue) |
1995 | |
1996 | /* This function is the interrupt service routine */ |
1997 | static irqreturn_t tw_interrupt(int irq, void *dev_instance) |
1998 | { |
1999 | int request_id; |
2000 | u32 status_reg_value; |
2001 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; |
2002 | TW_Response_Queue response_que; |
2003 | int error = 0, retval = 0; |
2004 | TW_Command *command_packet; |
2005 | int handled = 0; |
2006 | |
2007 | /* Get the host lock for io completions */ |
2008 | spin_lock(lock: tw_dev->host->host_lock); |
2009 | |
2010 | /* Read the registers */ |
2011 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
2012 | |
2013 | /* Check if this is our interrupt, otherwise bail */ |
2014 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) |
2015 | goto tw_interrupt_bail; |
2016 | |
2017 | handled = 1; |
2018 | |
2019 | /* If we are resetting, bail */ |
2020 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) |
2021 | goto tw_interrupt_bail; |
2022 | |
2023 | /* Check controller for errors */ |
2024 | if (tw_check_bits(status_reg_value)) { |
2025 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n" ); |
2026 | if (tw_decode_bits(tw_dev, status_reg_value, print_host: 1)) { |
2027 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
2028 | goto tw_interrupt_bail; |
2029 | } |
2030 | } |
2031 | |
2032 | /* Handle host interrupt */ |
2033 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) { |
2034 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n" ); |
2035 | TW_CLEAR_HOST_INTERRUPT(tw_dev); |
2036 | } |
2037 | |
2038 | /* Handle attention interrupt */ |
2039 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { |
2040 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n" ); |
2041 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); |
2042 | tw_state_request_start(tw_dev, request_id: &request_id); |
2043 | error = tw_aen_read_queue(tw_dev, request_id); |
2044 | if (error) { |
2045 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n" , tw_dev->host->host_no); |
2046 | tw_dev->state[request_id] = TW_S_COMPLETED; |
2047 | tw_state_request_finish(tw_dev, request_id); |
2048 | } |
2049 | } |
2050 | |
2051 | /* Handle command interrupt */ |
2052 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { |
2053 | /* Drain as many pending commands as we can */ |
2054 | while (tw_dev->pending_request_count > 0) { |
2055 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; |
2056 | if (tw_dev->state[request_id] != TW_S_PENDING) { |
2057 | printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n" , tw_dev->host->host_no); |
2058 | break; |
2059 | } |
2060 | if (tw_post_command_packet(tw_dev, request_id)==0) { |
2061 | if (tw_dev->pending_head == TW_Q_LENGTH-1) { |
2062 | tw_dev->pending_head = TW_Q_START; |
2063 | } else { |
2064 | tw_dev->pending_head = tw_dev->pending_head + 1; |
2065 | } |
2066 | tw_dev->pending_request_count--; |
2067 | } else { |
2068 | /* If we get here, we will continue re-posting on the next command interrupt */ |
2069 | break; |
2070 | } |
2071 | } |
2072 | /* If there are no more pending requests, we mask command interrupt */ |
2073 | if (tw_dev->pending_request_count == 0) |
2074 | TW_MASK_COMMAND_INTERRUPT(tw_dev); |
2075 | } |
2076 | |
2077 | /* Handle response interrupt */ |
2078 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { |
2079 | /* Drain the response queue from the board */ |
2080 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { |
2081 | /* Read response queue register */ |
2082 | response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); |
2083 | request_id = TW_RESID_OUT(response_que.response_id); |
2084 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; |
2085 | error = 0; |
2086 | |
2087 | /* Check for bad response */ |
2088 | if (command_packet->status != 0) { |
2089 | /* If internal command, don't error, don't fill sense */ |
2090 | if (tw_dev->srb[request_id] == NULL) { |
2091 | tw_decode_sense(tw_dev, request_id, fill_sense: 0); |
2092 | } else { |
2093 | error = tw_decode_sense(tw_dev, request_id, fill_sense: 1); |
2094 | } |
2095 | } |
2096 | |
2097 | /* Check for correct state */ |
2098 | if (tw_dev->state[request_id] != TW_S_POSTED) { |
2099 | if (tw_dev->srb[request_id] != NULL) { |
2100 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n" , tw_dev->host->host_no); |
2101 | error = 1; |
2102 | } |
2103 | } |
2104 | |
2105 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n" , request_id); |
2106 | |
2107 | /* Check for internal command completion */ |
2108 | if (tw_dev->srb[request_id] == NULL) { |
2109 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n" ); |
2110 | /* Check for chrdev ioctl completion */ |
2111 | if (request_id != tw_dev->chrdev_request_id) { |
2112 | retval = tw_aen_complete(tw_dev, request_id); |
2113 | if (retval) { |
2114 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n" , tw_dev->host->host_no); |
2115 | } |
2116 | } else { |
2117 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; |
2118 | wake_up(&tw_dev->ioctl_wqueue); |
2119 | } |
2120 | } else { |
2121 | switch (tw_dev->srb[request_id]->cmnd[0]) { |
2122 | case READ_10: |
2123 | case READ_6: |
2124 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n" ); |
2125 | break; |
2126 | case WRITE_10: |
2127 | case WRITE_6: |
2128 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n" ); |
2129 | break; |
2130 | case TEST_UNIT_READY: |
2131 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n" ); |
2132 | error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id); |
2133 | break; |
2134 | case INQUIRY: |
2135 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n" ); |
2136 | error = tw_scsiop_inquiry_complete(tw_dev, request_id); |
2137 | break; |
2138 | case READ_CAPACITY: |
2139 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n" ); |
2140 | error = tw_scsiop_read_capacity_complete(tw_dev, request_id); |
2141 | break; |
2142 | case MODE_SENSE: |
2143 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n" ); |
2144 | error = tw_scsiop_mode_sense_complete(tw_dev, request_id); |
2145 | break; |
2146 | case SYNCHRONIZE_CACHE: |
2147 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n" ); |
2148 | break; |
2149 | default: |
2150 | printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n" ); |
2151 | error = 1; |
2152 | } |
2153 | |
2154 | /* If no error command was a success */ |
2155 | if (error == 0) { |
2156 | tw_dev->srb[request_id]->result = (DID_OK << 16); |
2157 | } |
2158 | |
2159 | /* If error, command failed */ |
2160 | if (error == 1) { |
2161 | /* Ask for a host reset */ |
2162 | tw_dev->srb[request_id]->result = (DID_OK << 16) | SAM_STAT_CHECK_CONDITION; |
2163 | } |
2164 | |
2165 | /* Now complete the io */ |
2166 | if ((error != TW_ISR_DONT_COMPLETE)) { |
2167 | scsi_dma_unmap(cmd: tw_dev->srb[request_id]); |
2168 | scsi_done(cmd: tw_dev->srb[request_id]); |
2169 | tw_dev->state[request_id] = TW_S_COMPLETED; |
2170 | tw_state_request_finish(tw_dev, request_id); |
2171 | tw_dev->posted_request_count--; |
2172 | } |
2173 | } |
2174 | |
2175 | /* Check for valid status after each drain */ |
2176 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); |
2177 | if (tw_check_bits(status_reg_value)) { |
2178 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n" ); |
2179 | if (tw_decode_bits(tw_dev, status_reg_value, print_host: 1)) { |
2180 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); |
2181 | goto tw_interrupt_bail; |
2182 | } |
2183 | } |
2184 | } |
2185 | } |
2186 | |
2187 | tw_interrupt_bail: |
2188 | spin_unlock(lock: tw_dev->host->host_lock); |
2189 | return IRQ_RETVAL(handled); |
2190 | } /* End tw_interrupt() */ |
2191 | |
2192 | /* This function tells the controller to shut down */ |
2193 | static void __tw_shutdown(TW_Device_Extension *tw_dev) |
2194 | { |
2195 | /* Disable interrupts */ |
2196 | TW_DISABLE_INTERRUPTS(tw_dev); |
2197 | |
2198 | /* Free up the IRQ */ |
2199 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); |
2200 | |
2201 | printk(KERN_WARNING "3w-xxxx: Shutting down host %d.\n" , tw_dev->host->host_no); |
2202 | |
2203 | /* Tell the card we are shutting down */ |
2204 | if (tw_initconnection(tw_dev, message_credits: 1)) { |
2205 | printk(KERN_WARNING "3w-xxxx: Connection shutdown failed.\n" ); |
2206 | } else { |
2207 | printk(KERN_WARNING "3w-xxxx: Shutdown complete.\n" ); |
2208 | } |
2209 | |
2210 | /* Clear all interrupts just before exit */ |
2211 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
2212 | } /* End __tw_shutdown() */ |
2213 | |
2214 | /* Wrapper for __tw_shutdown */ |
2215 | static void tw_shutdown(struct pci_dev *pdev) |
2216 | { |
2217 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
2218 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
2219 | |
2220 | __tw_shutdown(tw_dev); |
2221 | } /* End tw_shutdown() */ |
2222 | |
2223 | /* This function gets called when a disk is coming online */ |
2224 | static int tw_slave_configure(struct scsi_device *sdev) |
2225 | { |
2226 | /* Force 60 second timeout */ |
2227 | blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); |
2228 | |
2229 | return 0; |
2230 | } /* End tw_slave_configure() */ |
2231 | |
2232 | static const struct scsi_host_template driver_template = { |
2233 | .module = THIS_MODULE, |
2234 | .name = "3ware Storage Controller" , |
2235 | .queuecommand = tw_scsi_queue, |
2236 | .eh_host_reset_handler = tw_scsi_eh_reset, |
2237 | .bios_param = tw_scsi_biosparam, |
2238 | .change_queue_depth = scsi_change_queue_depth, |
2239 | .can_queue = TW_Q_LENGTH-2, |
2240 | .slave_configure = tw_slave_configure, |
2241 | .this_id = -1, |
2242 | .sg_tablesize = TW_MAX_SGL_LENGTH, |
2243 | .max_sectors = TW_MAX_SECTORS, |
2244 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, |
2245 | .shost_groups = tw_host_groups, |
2246 | .emulated = 1, |
2247 | .no_write_same = 1, |
2248 | }; |
2249 | |
2250 | /* This function will probe and initialize a card */ |
2251 | static int tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) |
2252 | { |
2253 | struct Scsi_Host *host = NULL; |
2254 | TW_Device_Extension *tw_dev; |
2255 | int retval; |
2256 | |
2257 | retval = pci_enable_device(dev: pdev); |
2258 | if (retval) { |
2259 | printk(KERN_WARNING "3w-xxxx: Failed to enable pci device." ); |
2260 | goto out_disable_device; |
2261 | } |
2262 | |
2263 | pci_set_master(dev: pdev); |
2264 | |
2265 | retval = dma_set_mask_and_coherent(dev: &pdev->dev, DMA_BIT_MASK(32)); |
2266 | if (retval) { |
2267 | printk(KERN_WARNING "3w-xxxx: Failed to set dma mask." ); |
2268 | goto out_disable_device; |
2269 | } |
2270 | |
2271 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); |
2272 | if (!host) { |
2273 | printk(KERN_WARNING "3w-xxxx: Failed to allocate memory for device extension." ); |
2274 | retval = -ENOMEM; |
2275 | goto out_disable_device; |
2276 | } |
2277 | tw_dev = (TW_Device_Extension *)host->hostdata; |
2278 | |
2279 | /* Save values to device extension */ |
2280 | tw_dev->host = host; |
2281 | tw_dev->tw_pci_dev = pdev; |
2282 | |
2283 | if (tw_initialize_device_extension(tw_dev)) { |
2284 | printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension." ); |
2285 | retval = -ENOMEM; |
2286 | goto out_free_device_extension; |
2287 | } |
2288 | |
2289 | /* Request IO regions */ |
2290 | retval = pci_request_regions(pdev, "3w-xxxx" ); |
2291 | if (retval) { |
2292 | printk(KERN_WARNING "3w-xxxx: Failed to get mem region." ); |
2293 | goto out_free_device_extension; |
2294 | } |
2295 | |
2296 | /* Save base address */ |
2297 | tw_dev->base_addr = pci_resource_start(pdev, 0); |
2298 | if (!tw_dev->base_addr) { |
2299 | printk(KERN_WARNING "3w-xxxx: Failed to get io address." ); |
2300 | retval = -ENOMEM; |
2301 | goto out_release_mem_region; |
2302 | } |
2303 | |
2304 | /* Disable interrupts on the card */ |
2305 | TW_DISABLE_INTERRUPTS(tw_dev); |
2306 | |
2307 | /* Initialize the card */ |
2308 | if (tw_reset_sequence(tw_dev)) { |
2309 | retval = -EINVAL; |
2310 | goto out_release_mem_region; |
2311 | } |
2312 | |
2313 | /* Set host specific parameters */ |
2314 | host->max_id = TW_MAX_UNITS; |
2315 | host->max_cmd_len = TW_MAX_CDB_LEN; |
2316 | |
2317 | /* Luns and channels aren't supported by adapter */ |
2318 | host->max_lun = 0; |
2319 | host->max_channel = 0; |
2320 | |
2321 | /* Register the card with the kernel SCSI layer */ |
2322 | retval = scsi_add_host(host, dev: &pdev->dev); |
2323 | if (retval) { |
2324 | printk(KERN_WARNING "3w-xxxx: scsi add host failed" ); |
2325 | goto out_release_mem_region; |
2326 | } |
2327 | |
2328 | pci_set_drvdata(pdev, data: host); |
2329 | |
2330 | printk(KERN_WARNING "3w-xxxx: scsi%d: Found a 3ware Storage Controller at 0x%x, IRQ: %d.\n" , host->host_no, tw_dev->base_addr, pdev->irq); |
2331 | |
2332 | /* Now setup the interrupt handler */ |
2333 | retval = request_irq(irq: pdev->irq, handler: tw_interrupt, IRQF_SHARED, name: "3w-xxxx" , dev: tw_dev); |
2334 | if (retval) { |
2335 | printk(KERN_WARNING "3w-xxxx: Error requesting IRQ." ); |
2336 | goto out_remove_host; |
2337 | } |
2338 | |
2339 | tw_device_extension_list[tw_device_extension_count] = tw_dev; |
2340 | tw_device_extension_count++; |
2341 | |
2342 | /* Re-enable interrupts on the card */ |
2343 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
2344 | |
2345 | /* Finally, scan the host */ |
2346 | scsi_scan_host(host); |
2347 | |
2348 | if (twe_major == -1) { |
2349 | if ((twe_major = register_chrdev (major: 0, name: "twe" , fops: &tw_fops)) < 0) |
2350 | printk(KERN_WARNING "3w-xxxx: Failed to register character device." ); |
2351 | } |
2352 | return 0; |
2353 | |
2354 | out_remove_host: |
2355 | scsi_remove_host(host); |
2356 | out_release_mem_region: |
2357 | pci_release_regions(pdev); |
2358 | out_free_device_extension: |
2359 | tw_free_device_extension(tw_dev); |
2360 | scsi_host_put(t: host); |
2361 | out_disable_device: |
2362 | pci_disable_device(dev: pdev); |
2363 | |
2364 | return retval; |
2365 | } /* End tw_probe() */ |
2366 | |
2367 | /* This function is called to remove a device */ |
2368 | static void tw_remove(struct pci_dev *pdev) |
2369 | { |
2370 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
2371 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
2372 | |
2373 | scsi_remove_host(tw_dev->host); |
2374 | |
2375 | /* Unregister character device */ |
2376 | if (twe_major >= 0) { |
2377 | unregister_chrdev(major: twe_major, name: "twe" ); |
2378 | twe_major = -1; |
2379 | } |
2380 | |
2381 | /* Shutdown the card */ |
2382 | __tw_shutdown(tw_dev); |
2383 | |
2384 | /* Free up the mem region */ |
2385 | pci_release_regions(pdev); |
2386 | |
2387 | /* Free up device extension resources */ |
2388 | tw_free_device_extension(tw_dev); |
2389 | |
2390 | scsi_host_put(t: tw_dev->host); |
2391 | pci_disable_device(dev: pdev); |
2392 | tw_device_extension_count--; |
2393 | } /* End tw_remove() */ |
2394 | |
2395 | /* PCI Devices supported by this driver */ |
2396 | static struct pci_device_id tw_pci_tbl[] = { |
2397 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_1000, |
2398 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
2399 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_7000, |
2400 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, |
2401 | { } |
2402 | }; |
2403 | MODULE_DEVICE_TABLE(pci, tw_pci_tbl); |
2404 | |
2405 | /* pci_driver initializer */ |
2406 | static struct pci_driver tw_driver = { |
2407 | .name = "3w-xxxx" , |
2408 | .id_table = tw_pci_tbl, |
2409 | .probe = tw_probe, |
2410 | .remove = tw_remove, |
2411 | .shutdown = tw_shutdown, |
2412 | }; |
2413 | |
2414 | /* This function is called on driver initialization */ |
2415 | static int __init tw_init(void) |
2416 | { |
2417 | printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n" , TW_DRIVER_VERSION); |
2418 | |
2419 | return pci_register_driver(&tw_driver); |
2420 | } /* End tw_init() */ |
2421 | |
2422 | /* This function is called on driver exit */ |
2423 | static void __exit tw_exit(void) |
2424 | { |
2425 | pci_unregister_driver(dev: &tw_driver); |
2426 | } /* End tw_exit() */ |
2427 | |
2428 | module_init(tw_init); |
2429 | module_exit(tw_exit); |
2430 | |
2431 | |