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1da177e4 LT |
1 | /* |
2 | 3w-xxxx.c -- 3ware Storage Controller device driver for Linux. | |
3 | ||
4deedd84 | 4 | Written By: Adam Radford <linuxraid@lsi.com> |
1da177e4 LT |
5 | Modifications By: Joel Jacobson <linux@3ware.com> |
6 | Arnaldo Carvalho de Melo <acme@conectiva.com.br> | |
7 | Brad Strand <linux@3ware.com> | |
8 | ||
4deedd84 | 9 | Copyright (C) 1999-2010 3ware Inc. |
1da177e4 | 10 | |
06fe9fb4 | 11 | Kernel compatibility By: Andre Hedrick <andre@suse.com> |
1da177e4 LT |
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: | |
4deedd84 | 50 | linuxraid@lsi.com |
1da177e4 LT |
51 | |
52 | For more information, goto: | |
4deedd84 | 53 | http://www.lsi.com |
1da177e4 LT |
54 | |
55 | History | |
56 | ------- | |
57 | 0.1.000 - Initial release. | |
58 | 0.4.000 - Added support for Asynchronous Event Notification through | |
59 | ioctls for 3DM. | |
60 | 1.0.000 - Added DPO & FUA bit support for WRITE_10 & WRITE_6 cdb | |
61 | to disable drive write-cache before writes. | |
62 | 1.1.000 - Fixed performance bug with DPO & FUA not existing for WRITE_6. | |
63 | 1.2.000 - Added support for clean shutdown notification/feature table. | |
64 | 1.02.00.001 - Added support for full command packet posts through ioctls | |
65 | for 3DM. | |
66 | Bug fix so hot spare drives don't show up. | |
67 | 1.02.00.002 - Fix bug with tw_setfeature() call that caused oops on some | |
68 | systems. | |
69 | 08/21/00 - release previously allocated resources on failure at | |
70 | tw_allocate_memory (acme) | |
71 | 1.02.00.003 - Fix tw_interrupt() to report error to scsi layer when | |
72 | controller status is non-zero. | |
73 | Added handling of request_sense opcode. | |
74 | Fix possible null pointer dereference in | |
75 | tw_reset_device_extension() | |
76 | 1.02.00.004 - Add support for device id of 3ware 7000 series controllers. | |
77 | Make tw_setfeature() call with interrupts disabled. | |
78 | Register interrupt handler before enabling interrupts. | |
79 | Clear attention interrupt before draining aen queue. | |
80 | 1.02.00.005 - Allocate bounce buffers and custom queue depth for raid5 for | |
81 | 6000 and 5000 series controllers. | |
82 | Reduce polling mdelays causing problems on some systems. | |
83 | Fix use_sg = 1 calculation bug. | |
84 | Check for scsi_register returning NULL. | |
85 | Add aen count to /proc/scsi/3w-xxxx. | |
86 | Remove aen code unit masking in tw_aen_complete(). | |
87 | 1.02.00.006 - Remove unit from printk in tw_scsi_eh_abort(), causing | |
88 | possible oops. | |
89 | Fix possible null pointer dereference in tw_scsi_queue() | |
90 | if done function pointer was invalid. | |
91 | 1.02.00.007 - Fix possible null pointer dereferences in tw_ioctl(). | |
92 | Remove check for invalid done function pointer from | |
93 | tw_scsi_queue(). | |
94 | 1.02.00.008 - Set max sectors per io to TW_MAX_SECTORS in tw_findcards(). | |
95 | Add tw_decode_error() for printing readable error messages. | |
96 | Print some useful information on certain aen codes. | |
97 | Add tw_decode_bits() for interpreting status register output. | |
98 | Make scsi_set_pci_device() for kernels >= 2.4.4 | |
99 | Fix bug where aen's could be lost before a reset. | |
100 | Re-add spinlocks in tw_scsi_detect(). | |
101 | Fix possible null pointer dereference in tw_aen_drain_queue() | |
102 | during initialization. | |
103 | Clear pci parity errors during initialization and during io. | |
104 | 1.02.00.009 - Remove redundant increment in tw_state_request_start(). | |
105 | Add ioctl support for direct ATA command passthru. | |
106 | Add entire aen code string list. | |
107 | 1.02.00.010 - Cleanup queueing code, fix jbod thoughput. | |
108 | Fix get_param for specific units. | |
109 | 1.02.00.011 - Fix bug in tw_aen_complete() where aen's could be lost. | |
110 | Fix tw_aen_drain_queue() to display useful info at init. | |
111 | Set tw_host->max_id for 12 port cards. | |
112 | Add ioctl support for raw command packet post from userspace | |
113 | with sglist fragments (parameter and io). | |
114 | 1.02.00.012 - Fix read capacity to under report by 1 sector to fix get | |
115 | last sector ioctl. | |
116 | 1.02.00.013 - Fix bug where more AEN codes weren't coming out during | |
117 | driver initialization. | |
118 | Improved handling of PCI aborts. | |
119 | 1.02.00.014 - Fix bug in tw_findcards() where AEN code could be lost. | |
120 | Increase timeout in tw_aen_drain_queue() to 30 seconds. | |
121 | 1.02.00.015 - Re-write raw command post with data ioctl method. | |
122 | Remove raid5 bounce buffers for raid5 for 6XXX for kernel 2.5 | |
123 | Add tw_map/unmap_scsi_sg/single_data() for kernel 2.5 | |
124 | Replace io_request_lock with host_lock for kernel 2.5 | |
125 | Set max_cmd_len to 16 for 3dm for kernel 2.5 | |
126 | 1.02.00.016 - Set host->max_sectors back up to 256. | |
127 | 1.02.00.017 - Modified pci parity error handling/clearing from config space | |
128 | during initialization. | |
129 | 1.02.00.018 - Better handling of request sense opcode and sense information | |
130 | for failed commands. Add tw_decode_sense(). | |
131 | Replace all mdelay()'s with scsi_sleep(). | |
132 | 1.02.00.019 - Revert mdelay's and scsi_sleep's, this caused problems on | |
133 | some SMP systems. | |
134 | 1.02.00.020 - Add pci_set_dma_mask(), rewrite kmalloc()/virt_to_bus() to | |
135 | pci_alloc/free_consistent(). | |
136 | Better alignment checking in tw_allocate_memory(). | |
137 | Cleanup tw_initialize_device_extension(). | |
138 | 1.02.00.021 - Bump cmd_per_lun in SHT to 255 for better jbod performance. | |
139 | Improve handling of errors in tw_interrupt(). | |
140 | Add handling/clearing of controller queue error. | |
141 | Empty stale responses before draining aen queue. | |
142 | Fix tw_scsi_eh_abort() to not reset on every io abort. | |
143 | Set can_queue in SHT to 255 to prevent hang from AEN. | |
144 | 1.02.00.022 - Fix possible null pointer dereference in tw_scsi_release(). | |
145 | 1.02.00.023 - Fix bug in tw_aen_drain_queue() where unit # was always zero. | |
146 | 1.02.00.024 - Add severity levels to AEN strings. | |
147 | 1.02.00.025 - Fix command interrupt spurious error messages. | |
148 | Fix bug in raw command post with data ioctl method. | |
149 | Fix bug where rollcall sometimes failed with cable errors. | |
150 | Print unit # on all command timeouts. | |
151 | 1.02.00.026 - Fix possible infinite retry bug with power glitch induced | |
152 | drive timeouts. | |
153 | Cleanup some AEN severity levels. | |
154 | 1.02.00.027 - Add drive not supported AEN code for SATA controllers. | |
155 | Remove spurious unknown ioctl error message. | |
156 | 1.02.00.028 - Fix bug where multiple controllers with no units were the | |
157 | same card number. | |
158 | Fix bug where cards were being shut down more than once. | |
159 | 1.02.00.029 - Add missing pci_free_consistent() in tw_allocate_memory(). | |
160 | Replace pci_map_single() with pci_map_page() for highmem. | |
161 | Check for tw_setfeature() failure. | |
162 | 1.02.00.030 - Make driver 64-bit clean. | |
163 | 1.02.00.031 - Cleanup polling timeouts/routines in several places. | |
164 | Add support for mode sense opcode. | |
165 | Add support for cache mode page. | |
166 | Add support for synchronize cache opcode. | |
167 | 1.02.00.032 - Fix small multicard rollcall bug. | |
168 | Make driver stay loaded with no units for hot add/swap. | |
169 | Add support for "twe" character device for ioctls. | |
170 | Clean up request_id queueing code. | |
171 | Fix tw_scsi_queue() spinlocks. | |
172 | 1.02.00.033 - Fix tw_aen_complete() to not queue 'queue empty' AEN's. | |
173 | Initialize queues correctly when loading with no valid units. | |
174 | 1.02.00.034 - Fix tw_decode_bits() to handle multiple errors. | |
175 | Add support for user configurable cmd_per_lun. | |
176 | Add support for sht->slave_configure(). | |
177 | 1.02.00.035 - Improve tw_allocate_memory() memory allocation. | |
178 | Fix tw_chrdev_ioctl() to sleep correctly. | |
179 | 1.02.00.036 - Increase character ioctl timeout to 60 seconds. | |
180 | 1.02.00.037 - Fix tw_ioctl() to handle all non-data ATA passthru cmds | |
181 | for 'smartmontools' support. | |
182 | 1.26.00.038 - Roll driver minor version to 26 to denote kernel 2.6. | |
183 | Add support for cmds_per_lun module parameter. | |
184 | 1.26.00.039 - Fix bug in tw_chrdev_ioctl() polling code. | |
185 | Fix data_buffer_length usage in tw_chrdev_ioctl(). | |
186 | Update contact information. | |
187 | 1.26.02.000 - Convert driver to pci_driver format. | |
188 | 1.26.02.001 - Increase max ioctl buffer size to 512 sectors. | |
189 | Make tw_scsi_queue() return 0 for 'Unknown scsi opcode'. | |
190 | Fix tw_remove() to free irq handler/unregister_chrdev() | |
191 | before shutting down card. | |
192 | Change to new 'change_queue_depth' api. | |
193 | Fix 'handled=1' ISR usage, remove bogus IRQ check. | |
4fe48187 | 194 | 1.26.02.002 - Free irq handler in __tw_shutdown(). |
195 | Turn on RCD bit for caching mode page. | |
196 | Serialize reset code. | |
4deedd84 | 197 | 1.26.02.003 - Force 60 second timeout default. |
1da177e4 LT |
198 | */ |
199 | ||
200 | #include <linux/module.h> | |
201 | #include <linux/reboot.h> | |
202 | #include <linux/spinlock.h> | |
203 | #include <linux/interrupt.h> | |
204 | #include <linux/moduleparam.h> | |
205 | #include <linux/errno.h> | |
206 | #include <linux/types.h> | |
207 | #include <linux/delay.h> | |
5a0e3ad6 | 208 | #include <linux/gfp.h> |
1da177e4 LT |
209 | #include <linux/pci.h> |
210 | #include <linux/time.h> | |
a12e25bd | 211 | #include <linux/mutex.h> |
1da177e4 LT |
212 | #include <asm/io.h> |
213 | #include <asm/irq.h> | |
214 | #include <asm/uaccess.h> | |
215 | #include <scsi/scsi.h> | |
216 | #include <scsi/scsi_host.h> | |
217 | #include <scsi/scsi_tcq.h> | |
218 | #include <scsi/scsi_cmnd.h> | |
28ce280f | 219 | #include <scsi/scsi_eh.h> |
1da177e4 LT |
220 | #include "3w-xxxx.h" |
221 | ||
222 | /* Globals */ | |
4deedd84 | 223 | #define TW_DRIVER_VERSION "1.26.02.003" |
c45d15d2 | 224 | static DEFINE_MUTEX(tw_mutex); |
1da177e4 LT |
225 | static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT]; |
226 | static int tw_device_extension_count = 0; | |
227 | static int twe_major = -1; | |
228 | ||
229 | /* Module parameters */ | |
4deedd84 | 230 | MODULE_AUTHOR("LSI"); |
1da177e4 LT |
231 | MODULE_DESCRIPTION("3ware Storage Controller Linux Driver"); |
232 | MODULE_LICENSE("GPL"); | |
233 | MODULE_VERSION(TW_DRIVER_VERSION); | |
234 | ||
235 | /* Function prototypes */ | |
4fe48187 | 236 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev); |
1da177e4 LT |
237 | |
238 | /* Functions */ | |
239 | ||
240 | /* This function will check the status register for unexpected bits */ | |
241 | static int tw_check_bits(u32 status_reg_value) | |
242 | { | |
243 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) { | |
244 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value); | |
245 | return 1; | |
246 | } | |
247 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) { | |
248 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value); | |
249 | return 1; | |
250 | } | |
251 | ||
252 | return 0; | |
253 | } /* End tw_check_bits() */ | |
254 | ||
255 | /* This function will print readable messages from status register errors */ | |
256 | static int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host) | |
257 | { | |
258 | char host[16]; | |
259 | ||
260 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n"); | |
261 | ||
262 | if (print_host) | |
263 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | |
264 | else | |
265 | host[0] = '\0'; | |
266 | ||
267 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { | |
268 | printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n", host); | |
269 | outl(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
270 | } | |
271 | ||
272 | if (status_reg_value & TW_STATUS_PCI_ABORT) { | |
273 | printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n", host); | |
274 | outl(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); | |
275 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); | |
276 | } | |
277 | ||
278 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { | |
279 | printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n", host); | |
280 | outl(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
281 | } | |
282 | ||
283 | if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) { | |
284 | printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n", host); | |
285 | outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
286 | } | |
287 | ||
288 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { | |
289 | if (tw_dev->reset_print == 0) { | |
290 | printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n", host); | |
291 | tw_dev->reset_print = 1; | |
292 | } | |
293 | return 1; | |
294 | } | |
295 | ||
296 | return 0; | |
297 | } /* End tw_decode_bits() */ | |
298 | ||
299 | /* This function will poll the status register for a flag */ | |
300 | static int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
301 | { | |
302 | u32 status_reg_value; | |
303 | unsigned long before; | |
304 | int retval = 1; | |
305 | ||
306 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
307 | before = jiffies; | |
308 | ||
309 | if (tw_check_bits(status_reg_value)) | |
310 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
311 | ||
312 | while ((status_reg_value & flag) != flag) { | |
313 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
314 | ||
315 | if (tw_check_bits(status_reg_value)) | |
316 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
317 | ||
318 | if (time_after(jiffies, before + HZ * seconds)) | |
319 | goto out; | |
320 | ||
321 | msleep(50); | |
322 | } | |
323 | retval = 0; | |
324 | out: | |
325 | return retval; | |
326 | } /* End tw_poll_status() */ | |
327 | ||
328 | /* This function will poll the status register for disappearance of a flag */ | |
329 | static int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
330 | { | |
331 | u32 status_reg_value; | |
332 | unsigned long before; | |
333 | int retval = 1; | |
334 | ||
335 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
336 | before = jiffies; | |
337 | ||
338 | if (tw_check_bits(status_reg_value)) | |
339 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
340 | ||
341 | while ((status_reg_value & flag) != 0) { | |
342 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
343 | ||
344 | if (tw_check_bits(status_reg_value)) | |
345 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
346 | ||
347 | if (time_after(jiffies, before + HZ * seconds)) | |
348 | goto out; | |
349 | ||
350 | msleep(50); | |
351 | } | |
352 | retval = 0; | |
353 | out: | |
354 | return retval; | |
355 | } /* End tw_poll_status_gone() */ | |
356 | ||
357 | /* This function will attempt to post a command packet to the board */ | |
358 | static int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id) | |
359 | { | |
360 | u32 status_reg_value; | |
361 | unsigned long command_que_value; | |
362 | ||
363 | dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n"); | |
364 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
365 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
366 | ||
367 | if (tw_check_bits(status_reg_value)) { | |
368 | dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n"); | |
369 | tw_decode_bits(tw_dev, status_reg_value, 1); | |
370 | } | |
371 | ||
372 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { | |
373 | /* We successfully posted the command packet */ | |
374 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
375 | tw_dev->state[request_id] = TW_S_POSTED; | |
376 | tw_dev->posted_request_count++; | |
377 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { | |
378 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | |
379 | } | |
380 | } else { | |
381 | /* Couldn't post the command packet, so we do it in the isr */ | |
382 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
383 | tw_dev->state[request_id] = TW_S_PENDING; | |
384 | tw_dev->pending_request_count++; | |
385 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { | |
386 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; | |
387 | } | |
388 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; | |
389 | if (tw_dev->pending_tail == TW_Q_LENGTH-1) { | |
390 | tw_dev->pending_tail = TW_Q_START; | |
391 | } else { | |
392 | tw_dev->pending_tail = tw_dev->pending_tail + 1; | |
393 | } | |
394 | } | |
395 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); | |
396 | return 1; | |
397 | } | |
398 | return 0; | |
399 | } /* End tw_post_command_packet() */ | |
400 | ||
401 | /* This function will return valid sense buffer information for failed cmds */ | |
402 | static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense) | |
403 | { | |
404 | int i; | |
405 | TW_Command *command; | |
406 | ||
407 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n"); | |
408 | command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
409 | ||
410 | 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)); | |
411 | ||
412 | /* Attempt to return intelligent sense information */ | |
413 | if (fill_sense) { | |
414 | if ((command->status == 0xc7) || (command->status == 0xcb)) { | |
6391a113 | 415 | for (i = 0; i < ARRAY_SIZE(tw_sense_table); i++) { |
1da177e4 LT |
416 | if (command->flags == tw_sense_table[i][0]) { |
417 | ||
418 | /* Valid bit and 'current errors' */ | |
419 | tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70); | |
420 | ||
421 | /* Sense key */ | |
422 | tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1]; | |
423 | ||
424 | /* Additional sense length */ | |
425 | tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */ | |
426 | ||
427 | /* Additional sense code */ | |
428 | tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2]; | |
429 | ||
430 | /* Additional sense code qualifier */ | |
431 | tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3]; | |
432 | ||
433 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); | |
434 | return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */ | |
435 | } | |
436 | } | |
437 | } | |
438 | ||
439 | /* If no table match, error so we get a reset */ | |
440 | return 1; | |
441 | } | |
442 | ||
443 | return 0; | |
444 | } /* End tw_decode_sense() */ | |
445 | ||
446 | /* This function will report controller error status */ | |
447 | static int tw_check_errors(TW_Device_Extension *tw_dev) | |
448 | { | |
449 | u32 status_reg_value; | |
450 | ||
451 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
452 | ||
453 | if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) { | |
454 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
455 | return 1; | |
456 | } | |
457 | ||
458 | return 0; | |
459 | } /* End tw_check_errors() */ | |
460 | ||
461 | /* This function will empty the response que */ | |
462 | static void tw_empty_response_que(TW_Device_Extension *tw_dev) | |
463 | { | |
464 | u32 status_reg_value, response_que_value; | |
465 | ||
466 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
467 | ||
468 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
469 | response_que_value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
470 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
471 | } | |
472 | } /* End tw_empty_response_que() */ | |
473 | ||
474 | /* This function will free a request_id */ | |
475 | static void tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id) | |
476 | { | |
477 | tw_dev->free_queue[tw_dev->free_tail] = request_id; | |
478 | tw_dev->state[request_id] = TW_S_FINISHED; | |
479 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; | |
480 | } /* End tw_state_request_finish() */ | |
481 | ||
482 | /* This function will assign an available request_id */ | |
483 | static void tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id) | |
484 | { | |
485 | *request_id = tw_dev->free_queue[tw_dev->free_head]; | |
486 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; | |
487 | tw_dev->state[*request_id] = TW_S_STARTED; | |
488 | } /* End tw_state_request_start() */ | |
489 | ||
490 | /* Show some statistics about the card */ | |
ee959b00 TJ |
491 | static ssize_t tw_show_stats(struct device *dev, struct device_attribute *attr, |
492 | char *buf) | |
1da177e4 | 493 | { |
ee959b00 | 494 | struct Scsi_Host *host = class_to_shost(dev); |
1da177e4 LT |
495 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
496 | unsigned long flags = 0; | |
497 | ssize_t len; | |
498 | ||
499 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
500 | len = snprintf(buf, PAGE_SIZE, "3w-xxxx Driver version: %s\n" | |
501 | "Current commands posted: %4d\n" | |
502 | "Max commands posted: %4d\n" | |
503 | "Current pending commands: %4d\n" | |
504 | "Max pending commands: %4d\n" | |
505 | "Last sgl length: %4d\n" | |
506 | "Max sgl length: %4d\n" | |
507 | "Last sector count: %4d\n" | |
508 | "Max sector count: %4d\n" | |
509 | "SCSI Host Resets: %4d\n" | |
510 | "AEN's: %4d\n", | |
511 | TW_DRIVER_VERSION, | |
512 | tw_dev->posted_request_count, | |
513 | tw_dev->max_posted_request_count, | |
514 | tw_dev->pending_request_count, | |
515 | tw_dev->max_pending_request_count, | |
516 | tw_dev->sgl_entries, | |
517 | tw_dev->max_sgl_entries, | |
518 | tw_dev->sector_count, | |
519 | tw_dev->max_sector_count, | |
520 | tw_dev->num_resets, | |
521 | tw_dev->aen_count); | |
522 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
523 | return len; | |
524 | } /* End tw_show_stats() */ | |
525 | ||
1da177e4 | 526 | /* Create sysfs 'stats' entry */ |
ee959b00 | 527 | static struct device_attribute tw_host_stats_attr = { |
1da177e4 LT |
528 | .attr = { |
529 | .name = "stats", | |
530 | .mode = S_IRUGO, | |
531 | }, | |
532 | .show = tw_show_stats | |
533 | }; | |
534 | ||
535 | /* Host attributes initializer */ | |
ee959b00 | 536 | static struct device_attribute *tw_host_attrs[] = { |
1da177e4 LT |
537 | &tw_host_stats_attr, |
538 | NULL, | |
539 | }; | |
540 | ||
541 | /* This function will read the aen queue from the isr */ | |
542 | static int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | |
543 | { | |
544 | TW_Command *command_packet; | |
545 | TW_Param *param; | |
546 | unsigned long command_que_value; | |
547 | u32 status_reg_value; | |
548 | unsigned long param_value = 0; | |
549 | ||
550 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_read_queue()\n"); | |
551 | ||
552 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
553 | if (tw_check_bits(status_reg_value)) { | |
554 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n"); | |
555 | tw_decode_bits(tw_dev, status_reg_value, 1); | |
556 | return 1; | |
557 | } | |
558 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
559 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet virtual address.\n"); | |
560 | return 1; | |
561 | } | |
562 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
563 | memset(command_packet, 0, sizeof(TW_Sector)); | |
564 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
565 | command_packet->size = 4; | |
566 | command_packet->request_id = request_id; | |
567 | command_packet->status = 0; | |
568 | command_packet->flags = 0; | |
569 | command_packet->byte6.parameter_count = 1; | |
570 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
571 | if (command_que_value == 0) { | |
572 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet physical address.\n"); | |
573 | return 1; | |
574 | } | |
575 | /* Now setup the param */ | |
576 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
577 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment virtual address.\n"); | |
578 | return 1; | |
579 | } | |
580 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
581 | memset(param, 0, sizeof(TW_Sector)); | |
582 | param->table_id = 0x401; /* AEN table */ | |
583 | param->parameter_id = 2; /* Unit code */ | |
584 | param->parameter_size_bytes = 2; | |
585 | param_value = tw_dev->alignment_physical_address[request_id]; | |
586 | if (param_value == 0) { | |
587 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment physical address.\n"); | |
588 | return 1; | |
589 | } | |
590 | command_packet->byte8.param.sgl[0].address = param_value; | |
591 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
592 | ||
593 | /* Now post the command packet */ | |
594 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { | |
595 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n"); | |
596 | tw_dev->srb[request_id] = NULL; /* Flag internal command */ | |
597 | tw_dev->state[request_id] = TW_S_POSTED; | |
598 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
599 | } else { | |
600 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n"); | |
601 | return 1; | |
602 | } | |
603 | ||
604 | return 0; | |
605 | } /* End tw_aen_read_queue() */ | |
606 | ||
607 | /* This function will complete an aen request from the isr */ | |
608 | static int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id) | |
609 | { | |
610 | TW_Param *param; | |
611 | unsigned short aen; | |
612 | int error = 0, table_max = 0; | |
613 | ||
614 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n"); | |
615 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
616 | printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n"); | |
617 | return 1; | |
618 | } | |
619 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
620 | aen = *(unsigned short *)(param->data); | |
621 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen); | |
622 | ||
623 | /* Print some useful info when certain aen codes come out */ | |
624 | if (aen == 0x0ff) { | |
625 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev->host->host_no); | |
626 | } else { | |
6391a113 | 627 | table_max = ARRAY_SIZE(tw_aen_string); |
1da177e4 LT |
628 | if ((aen & 0x0ff) < table_max) { |
629 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { | |
630 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8); | |
631 | } else { | |
632 | if (aen != 0x0) | |
633 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff]); | |
634 | } | |
635 | } else { | |
636 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev->host->host_no, aen); | |
637 | } | |
638 | } | |
639 | if (aen != TW_AEN_QUEUE_EMPTY) { | |
640 | tw_dev->aen_count++; | |
641 | ||
642 | /* Now queue the code */ | |
643 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; | |
644 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { | |
645 | tw_dev->aen_tail = TW_Q_START; | |
646 | } else { | |
647 | tw_dev->aen_tail = tw_dev->aen_tail + 1; | |
648 | } | |
649 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
650 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
651 | tw_dev->aen_head = TW_Q_START; | |
652 | } else { | |
653 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
654 | } | |
655 | } | |
656 | ||
657 | error = tw_aen_read_queue(tw_dev, request_id); | |
658 | if (error) { | |
659 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev->host->host_no); | |
660 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
661 | tw_state_request_finish(tw_dev, request_id); | |
662 | } | |
663 | } else { | |
664 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
665 | tw_state_request_finish(tw_dev, request_id); | |
666 | } | |
667 | ||
668 | return 0; | |
669 | } /* End tw_aen_complete() */ | |
670 | ||
671 | /* This function will drain the aen queue after a soft reset */ | |
672 | static int tw_aen_drain_queue(TW_Device_Extension *tw_dev) | |
673 | { | |
674 | TW_Command *command_packet; | |
675 | TW_Param *param; | |
676 | int request_id = 0; | |
677 | unsigned long command_que_value; | |
678 | unsigned long param_value; | |
679 | TW_Response_Queue response_queue; | |
680 | unsigned short aen; | |
681 | unsigned short aen_code; | |
682 | int finished = 0; | |
683 | int first_reset = 0; | |
684 | int queue = 0; | |
685 | int found = 0, table_max = 0; | |
686 | ||
687 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n"); | |
688 | ||
689 | if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, 30)) { | |
690 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count); | |
691 | return 1; | |
692 | } | |
693 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
694 | ||
695 | /* Empty response queue */ | |
696 | tw_empty_response_que(tw_dev); | |
697 | ||
698 | /* Initialize command packet */ | |
699 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
700 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n"); | |
701 | return 1; | |
702 | } | |
703 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
704 | memset(command_packet, 0, sizeof(TW_Sector)); | |
705 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
706 | command_packet->size = 4; | |
707 | command_packet->request_id = request_id; | |
708 | command_packet->status = 0; | |
709 | command_packet->flags = 0; | |
710 | command_packet->byte6.parameter_count = 1; | |
711 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
712 | if (command_que_value == 0) { | |
713 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n"); | |
714 | return 1; | |
715 | } | |
716 | ||
717 | /* Now setup the param */ | |
718 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
719 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n"); | |
720 | return 1; | |
721 | } | |
722 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
723 | memset(param, 0, sizeof(TW_Sector)); | |
724 | param->table_id = 0x401; /* AEN table */ | |
725 | param->parameter_id = 2; /* Unit code */ | |
726 | param->parameter_size_bytes = 2; | |
727 | param_value = tw_dev->alignment_physical_address[request_id]; | |
728 | if (param_value == 0) { | |
729 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n"); | |
730 | return 1; | |
731 | } | |
732 | command_packet->byte8.param.sgl[0].address = param_value; | |
733 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
734 | ||
735 | /* Now drain the controller's aen queue */ | |
736 | do { | |
737 | /* Post command packet */ | |
738 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
739 | ||
740 | /* Now poll for completion */ | |
741 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
742 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
743 | request_id = TW_RESID_OUT(response_queue.response_id); | |
744 | ||
745 | if (request_id != 0) { | |
746 | /* Unexpected request id */ | |
747 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n"); | |
748 | return 1; | |
749 | } | |
750 | ||
751 | if (command_packet->status != 0) { | |
752 | if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) { | |
753 | /* Bad response */ | |
754 | tw_decode_sense(tw_dev, request_id, 0); | |
755 | return 1; | |
756 | } else { | |
757 | /* We know this is a 3w-1x00, and doesn't support aen's */ | |
758 | return 0; | |
759 | } | |
760 | } | |
761 | ||
762 | /* Now check the aen */ | |
763 | aen = *(unsigned short *)(param->data); | |
764 | aen_code = (aen & 0x0ff); | |
765 | queue = 0; | |
766 | switch (aen_code) { | |
767 | case TW_AEN_QUEUE_EMPTY: | |
768 | dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
769 | if (first_reset != 1) { | |
770 | return 1; | |
771 | } else { | |
772 | finished = 1; | |
773 | } | |
774 | break; | |
775 | case TW_AEN_SOFT_RESET: | |
776 | if (first_reset == 0) { | |
777 | first_reset = 1; | |
778 | } else { | |
779 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
780 | tw_dev->aen_count++; | |
781 | queue = 1; | |
782 | } | |
783 | break; | |
784 | default: | |
785 | if (aen == 0x0ff) { | |
786 | printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n"); | |
787 | } else { | |
6391a113 | 788 | table_max = ARRAY_SIZE(tw_aen_string); |
1da177e4 LT |
789 | if ((aen & 0x0ff) < table_max) { |
790 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { | |
791 | printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n", tw_aen_string[aen & 0xff], aen >> 8); | |
792 | } else { | |
793 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
794 | } | |
795 | } else | |
796 | printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n", aen); | |
797 | } | |
798 | tw_dev->aen_count++; | |
799 | queue = 1; | |
800 | } | |
801 | ||
802 | /* Now put the aen on the aen_queue */ | |
803 | if (queue == 1) { | |
804 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; | |
805 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { | |
806 | tw_dev->aen_tail = TW_Q_START; | |
807 | } else { | |
808 | tw_dev->aen_tail = tw_dev->aen_tail + 1; | |
809 | } | |
810 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
811 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
812 | tw_dev->aen_head = TW_Q_START; | |
813 | } else { | |
814 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
815 | } | |
816 | } | |
817 | } | |
818 | found = 1; | |
819 | } | |
820 | if (found == 0) { | |
821 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n"); | |
822 | return 1; | |
823 | } | |
824 | } while (finished == 0); | |
825 | ||
826 | return 0; | |
827 | } /* End tw_aen_drain_queue() */ | |
828 | ||
829 | /* This function will allocate memory */ | |
830 | static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | |
831 | { | |
832 | int i; | |
833 | dma_addr_t dma_handle; | |
834 | unsigned long *cpu_addr = NULL; | |
835 | ||
836 | dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n"); | |
837 | ||
838 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); | |
839 | if (cpu_addr == NULL) { | |
840 | printk(KERN_WARNING "3w-xxxx: pci_alloc_consistent() failed.\n"); | |
841 | return 1; | |
842 | } | |
843 | ||
844 | if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) { | |
845 | printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n"); | |
846 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); | |
847 | return 1; | |
848 | } | |
849 | ||
850 | memset(cpu_addr, 0, size*TW_Q_LENGTH); | |
851 | ||
852 | for (i=0;i<TW_Q_LENGTH;i++) { | |
853 | switch(which) { | |
854 | case 0: | |
855 | tw_dev->command_packet_physical_address[i] = dma_handle+(i*size); | |
856 | tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
857 | break; | |
858 | case 1: | |
859 | tw_dev->alignment_physical_address[i] = dma_handle+(i*size); | |
860 | tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
861 | break; | |
862 | default: | |
863 | printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n"); | |
864 | return 1; | |
865 | } | |
866 | } | |
867 | ||
868 | return 0; | |
869 | } /* End tw_allocate_memory() */ | |
870 | ||
871 | /* This function handles ioctl for the character device */ | |
f4927c45 | 872 | static long tw_chrdev_ioctl(struct file *file, unsigned int cmd, unsigned long arg) |
1da177e4 LT |
873 | { |
874 | int request_id; | |
875 | dma_addr_t dma_handle; | |
876 | unsigned short tw_aen_code; | |
877 | unsigned long flags; | |
878 | unsigned int data_buffer_length = 0; | |
879 | unsigned long data_buffer_length_adjusted = 0; | |
496ad9aa | 880 | struct inode *inode = file_inode(file); |
1da177e4 LT |
881 | unsigned long *cpu_addr; |
882 | long timeout; | |
883 | TW_New_Ioctl *tw_ioctl; | |
884 | TW_Passthru *passthru; | |
885 | TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)]; | |
886 | int retval = -EFAULT; | |
887 | void __user *argp = (void __user *)arg; | |
888 | ||
889 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n"); | |
890 | ||
c45d15d2 | 891 | mutex_lock(&tw_mutex); |
1da177e4 | 892 | /* Only let one of these through at a time */ |
f4927c45 | 893 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) { |
c45d15d2 | 894 | mutex_unlock(&tw_mutex); |
1da177e4 | 895 | return -EINTR; |
f4927c45 | 896 | } |
1da177e4 LT |
897 | |
898 | /* First copy down the buffer length */ | |
899 | if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int))) | |
900 | goto out; | |
901 | ||
902 | /* Check size */ | |
903 | if (data_buffer_length > TW_MAX_IOCTL_SECTORS * 512) { | |
904 | retval = -EINVAL; | |
905 | goto out; | |
906 | } | |
907 | ||
908 | /* Hardware can only do multiple of 512 byte transfers */ | |
909 | data_buffer_length_adjusted = (data_buffer_length + 511) & ~511; | |
910 | ||
911 | /* Now allocate ioctl buf memory */ | |
912 | cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, &dma_handle, GFP_KERNEL); | |
913 | if (cpu_addr == NULL) { | |
914 | retval = -ENOMEM; | |
915 | goto out; | |
916 | } | |
917 | ||
918 | tw_ioctl = (TW_New_Ioctl *)cpu_addr; | |
919 | ||
920 | /* Now copy down the entire ioctl */ | |
921 | if (copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl) - 1)) | |
922 | goto out2; | |
923 | ||
924 | passthru = (TW_Passthru *)&tw_ioctl->firmware_command; | |
925 | ||
926 | /* See which ioctl we are doing */ | |
927 | switch (cmd) { | |
928 | case TW_OP_NOP: | |
929 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_OP_NOP.\n"); | |
930 | break; | |
931 | case TW_OP_AEN_LISTEN: | |
932 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n"); | |
933 | memset(tw_ioctl->data_buffer, 0, data_buffer_length); | |
934 | ||
935 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
936 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
937 | tw_aen_code = TW_AEN_QUEUE_EMPTY; | |
938 | } else { | |
939 | tw_aen_code = tw_dev->aen_queue[tw_dev->aen_head]; | |
940 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
941 | tw_dev->aen_head = TW_Q_START; | |
942 | } else { | |
943 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
944 | } | |
945 | } | |
946 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
947 | memcpy(tw_ioctl->data_buffer, &tw_aen_code, sizeof(tw_aen_code)); | |
948 | break; | |
949 | case TW_CMD_PACKET_WITH_DATA: | |
950 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n"); | |
951 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
952 | ||
953 | tw_state_request_start(tw_dev, &request_id); | |
954 | ||
955 | /* Flag internal command */ | |
956 | tw_dev->srb[request_id] = NULL; | |
957 | ||
958 | /* Flag chrdev ioctl */ | |
959 | tw_dev->chrdev_request_id = request_id; | |
960 | ||
961 | tw_ioctl->firmware_command.request_id = request_id; | |
962 | ||
963 | /* Load the sg list */ | |
964 | switch (TW_SGL_OUT(tw_ioctl->firmware_command.opcode__sgloffset)) { | |
965 | case 2: | |
966 | tw_ioctl->firmware_command.byte8.param.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
967 | tw_ioctl->firmware_command.byte8.param.sgl[0].length = data_buffer_length_adjusted; | |
968 | break; | |
969 | case 3: | |
970 | tw_ioctl->firmware_command.byte8.io.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
971 | tw_ioctl->firmware_command.byte8.io.sgl[0].length = data_buffer_length_adjusted; | |
972 | break; | |
973 | case 5: | |
974 | passthru->sg_list[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
975 | passthru->sg_list[0].length = data_buffer_length_adjusted; | |
976 | break; | |
977 | } | |
978 | ||
979 | memcpy(tw_dev->command_packet_virtual_address[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command)); | |
980 | ||
981 | /* Now post the command packet to the controller */ | |
982 | tw_post_command_packet(tw_dev, request_id); | |
983 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
984 | ||
985 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | |
986 | ||
987 | /* Now wait for the command to complete */ | |
988 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | |
989 | ||
1da177e4 LT |
990 | /* We timed out, and didn't get an interrupt */ |
991 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | |
992 | /* Now we need to reset the board */ | |
993 | printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd); | |
994 | retval = -EIO; | |
4fe48187 | 995 | if (tw_reset_device_extension(tw_dev)) { |
1da177e4 LT |
996 | printk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n", tw_dev->host->host_no); |
997 | } | |
998 | goto out2; | |
999 | } | |
1000 | ||
1001 | /* Now copy in the command packet response */ | |
1002 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command)); | |
1003 | ||
1004 | /* Now complete the io */ | |
1005 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1006 | tw_dev->posted_request_count--; | |
1007 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1008 | tw_state_request_finish(tw_dev, request_id); | |
1009 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1010 | break; | |
1011 | default: | |
1012 | retval = -ENOTTY; | |
1013 | goto out2; | |
1014 | } | |
1015 | ||
1016 | /* Now copy the response to userspace */ | |
1017 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length - 1)) | |
1018 | goto out2; | |
1019 | retval = 0; | |
1020 | out2: | |
1021 | /* Now free ioctl buf memory */ | |
1022 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle); | |
1023 | out: | |
a12e25bd | 1024 | mutex_unlock(&tw_dev->ioctl_lock); |
c45d15d2 | 1025 | mutex_unlock(&tw_mutex); |
1da177e4 LT |
1026 | return retval; |
1027 | } /* End tw_chrdev_ioctl() */ | |
1028 | ||
1029 | /* This function handles open for the character device */ | |
f2b9857e | 1030 | /* NOTE that this function races with remove. */ |
1da177e4 LT |
1031 | static int tw_chrdev_open(struct inode *inode, struct file *file) |
1032 | { | |
1033 | unsigned int minor_number; | |
1034 | ||
1035 | dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n"); | |
1036 | ||
1037 | minor_number = iminor(inode); | |
1038 | if (minor_number >= tw_device_extension_count) | |
1039 | return -ENODEV; | |
1040 | ||
1041 | return 0; | |
1042 | } /* End tw_chrdev_open() */ | |
1043 | ||
1044 | /* File operations struct for character device */ | |
00977a59 | 1045 | static const struct file_operations tw_fops = { |
1da177e4 | 1046 | .owner = THIS_MODULE, |
f4927c45 | 1047 | .unlocked_ioctl = tw_chrdev_ioctl, |
4f44f35d RU |
1048 | #ifdef CONFIG_COMPAT |
1049 | .compat_ioctl = tw_chrdev_ioctl, | |
1050 | #endif | |
1da177e4 | 1051 | .open = tw_chrdev_open, |
6038f373 AB |
1052 | .release = NULL, |
1053 | .llseek = noop_llseek, | |
1da177e4 LT |
1054 | }; |
1055 | ||
1056 | /* This function will free up device extension resources */ | |
1057 | static void tw_free_device_extension(TW_Device_Extension *tw_dev) | |
1058 | { | |
1059 | dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n"); | |
1060 | ||
1061 | /* Free command packet and generic buffer memory */ | |
1062 | if (tw_dev->command_packet_virtual_address[0]) | |
1063 | pci_free_consistent(tw_dev->tw_pci_dev, sizeof(TW_Command)*TW_Q_LENGTH, tw_dev->command_packet_virtual_address[0], tw_dev->command_packet_physical_address[0]); | |
1064 | ||
1065 | if (tw_dev->alignment_virtual_address[0]) | |
1066 | pci_free_consistent(tw_dev->tw_pci_dev, sizeof(TW_Sector)*TW_Q_LENGTH, tw_dev->alignment_virtual_address[0], tw_dev->alignment_physical_address[0]); | |
1067 | } /* End tw_free_device_extension() */ | |
1068 | ||
1069 | /* This function will send an initconnection command to controller */ | |
1070 | static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits) | |
1071 | { | |
1072 | unsigned long command_que_value; | |
1073 | TW_Command *command_packet; | |
1074 | TW_Response_Queue response_queue; | |
1075 | int request_id = 0; | |
1076 | ||
1077 | dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n"); | |
1078 | ||
1079 | /* Initialize InitConnection command packet */ | |
1080 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
1081 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n"); | |
1082 | return 1; | |
1083 | } | |
1084 | ||
1085 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1086 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1087 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION); | |
1088 | command_packet->size = TW_INIT_COMMAND_PACKET_SIZE; | |
1089 | command_packet->request_id = request_id; | |
1090 | command_packet->status = 0x0; | |
1091 | command_packet->flags = 0x0; | |
1092 | command_packet->byte6.message_credits = message_credits; | |
1093 | command_packet->byte8.init_connection.response_queue_pointer = 0x0; | |
1094 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1095 | ||
1096 | if (command_que_value == 0) { | |
1097 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n"); | |
1098 | return 1; | |
1099 | } | |
1100 | ||
1101 | /* Send command packet to the board */ | |
1102 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1103 | ||
1104 | /* Poll for completion */ | |
1105 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
1106 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1107 | request_id = TW_RESID_OUT(response_queue.response_id); | |
1108 | ||
1109 | if (request_id != 0) { | |
1110 | /* unexpected request id */ | |
1111 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n"); | |
1112 | return 1; | |
1113 | } | |
1114 | if (command_packet->status != 0) { | |
1115 | /* bad response */ | |
1116 | tw_decode_sense(tw_dev, request_id, 0); | |
1117 | return 1; | |
1118 | } | |
1119 | } | |
1120 | return 0; | |
1121 | } /* End tw_initconnection() */ | |
1122 | ||
1123 | /* Set a value in the features table */ | |
1124 | static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size, | |
1125 | unsigned char *val) | |
1126 | { | |
1127 | TW_Param *param; | |
1128 | TW_Command *command_packet; | |
1129 | TW_Response_Queue response_queue; | |
1130 | int request_id = 0; | |
1131 | unsigned long command_que_value; | |
1132 | unsigned long param_value; | |
1133 | ||
1134 | /* Initialize SetParam command packet */ | |
1135 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
1136 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n"); | |
1137 | return 1; | |
1138 | } | |
1139 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1140 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1141 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1142 | ||
1143 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | |
1144 | param->table_id = 0x404; /* Features table */ | |
1145 | param->parameter_id = parm; | |
1146 | param->parameter_size_bytes = param_size; | |
1147 | memcpy(param->data, val, param_size); | |
1148 | ||
1149 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1150 | if (param_value == 0) { | |
1151 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad alignment physical address.\n"); | |
1152 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1153 | tw_state_request_finish(tw_dev, request_id); | |
1154 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
1155 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1156 | } | |
1157 | command_packet->byte8.param.sgl[0].address = param_value; | |
1158 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1159 | ||
1160 | command_packet->size = 4; | |
1161 | command_packet->request_id = request_id; | |
1162 | command_packet->byte6.parameter_count = 1; | |
1163 | ||
1164 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1165 | if (command_que_value == 0) { | |
1166 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n"); | |
1167 | return 1; | |
1168 | } | |
1169 | ||
1170 | /* Send command packet to the board */ | |
1171 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1172 | ||
1173 | /* Poll for completion */ | |
1174 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
1175 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1176 | request_id = TW_RESID_OUT(response_queue.response_id); | |
1177 | ||
1178 | if (request_id != 0) { | |
1179 | /* unexpected request id */ | |
1180 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n"); | |
1181 | return 1; | |
1182 | } | |
1183 | if (command_packet->status != 0) { | |
1184 | /* bad response */ | |
1185 | tw_decode_sense(tw_dev, request_id, 0); | |
1186 | return 1; | |
1187 | } | |
1188 | } | |
1189 | ||
1190 | return 0; | |
1191 | } /* End tw_setfeature() */ | |
1192 | ||
1193 | /* This function will reset a controller */ | |
1194 | static int tw_reset_sequence(TW_Device_Extension *tw_dev) | |
1195 | { | |
1196 | int error = 0; | |
1197 | int tries = 0; | |
1198 | unsigned char c = 1; | |
1199 | ||
1200 | /* Reset the board */ | |
1201 | while (tries < TW_MAX_RESET_TRIES) { | |
1202 | TW_SOFT_RESET(tw_dev); | |
1203 | ||
1204 | error = tw_aen_drain_queue(tw_dev); | |
1205 | if (error) { | |
1206 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev->host->host_no); | |
1207 | tries++; | |
1208 | continue; | |
1209 | } | |
1210 | ||
1211 | /* Check for controller errors */ | |
1212 | if (tw_check_errors(tw_dev)) { | |
1213 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev->host->host_no); | |
1214 | tries++; | |
1215 | continue; | |
1216 | } | |
1217 | ||
1218 | /* Now the controller is in a good state */ | |
1219 | break; | |
1220 | } | |
1221 | ||
1222 | if (tries >= TW_MAX_RESET_TRIES) { | |
1223 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev->host->host_no); | |
1224 | return 1; | |
1225 | } | |
1226 | ||
1227 | error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS); | |
1228 | if (error) { | |
1229 | printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev->host->host_no); | |
1230 | return 1; | |
1231 | } | |
1232 | ||
1233 | error = tw_setfeature(tw_dev, 2, 1, &c); | |
1234 | if (error) { | |
1235 | printk(KERN_WARNING "3w-xxxx: Unable to set features for card, probable old firmware or card.\n"); | |
1236 | } | |
1237 | ||
1238 | return 0; | |
1239 | } /* End tw_reset_sequence() */ | |
1240 | ||
1241 | /* This function will initialize the fields of a device extension */ | |
1242 | static int tw_initialize_device_extension(TW_Device_Extension *tw_dev) | |
1243 | { | |
1244 | int i, error=0; | |
1245 | ||
1246 | dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_device_extension()\n"); | |
1247 | ||
1248 | /* Initialize command packet buffers */ | |
1249 | error = tw_allocate_memory(tw_dev, sizeof(TW_Command), 0); | |
1250 | if (error) { | |
1251 | printk(KERN_WARNING "3w-xxxx: Command packet memory allocation failed.\n"); | |
1252 | return 1; | |
1253 | } | |
1254 | ||
1255 | /* Initialize generic buffer */ | |
1256 | error = tw_allocate_memory(tw_dev, sizeof(TW_Sector), 1); | |
1257 | if (error) { | |
1258 | printk(KERN_WARNING "3w-xxxx: Generic memory allocation failed.\n"); | |
1259 | return 1; | |
1260 | } | |
1261 | ||
1262 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1263 | tw_dev->free_queue[i] = i; | |
1264 | tw_dev->state[i] = TW_S_INITIAL; | |
1265 | } | |
1266 | ||
1267 | tw_dev->pending_head = TW_Q_START; | |
1268 | tw_dev->pending_tail = TW_Q_START; | |
1269 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1270 | ||
a12e25bd | 1271 | mutex_init(&tw_dev->ioctl_lock); |
1da177e4 LT |
1272 | init_waitqueue_head(&tw_dev->ioctl_wqueue); |
1273 | ||
1274 | return 0; | |
1275 | } /* End tw_initialize_device_extension() */ | |
1276 | ||
1da177e4 | 1277 | /* This function will reset a device extension */ |
4fe48187 | 1278 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev) |
1da177e4 LT |
1279 | { |
1280 | int i = 0; | |
1281 | struct scsi_cmnd *srb; | |
1282 | unsigned long flags = 0; | |
1283 | ||
1284 | dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n"); | |
1285 | ||
1286 | set_bit(TW_IN_RESET, &tw_dev->flags); | |
1287 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1288 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1289 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1290 | ||
1291 | /* Abort all requests that are in progress */ | |
1292 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1293 | if ((tw_dev->state[i] != TW_S_FINISHED) && | |
1294 | (tw_dev->state[i] != TW_S_INITIAL) && | |
1295 | (tw_dev->state[i] != TW_S_COMPLETED)) { | |
1296 | srb = tw_dev->srb[i]; | |
1297 | if (srb != NULL) { | |
1298 | srb->result = (DID_RESET << 16); | |
9cd95546 CH |
1299 | scsi_dma_unmap(srb); |
1300 | srb->scsi_done(srb); | |
1da177e4 LT |
1301 | } |
1302 | } | |
1303 | } | |
1304 | ||
1305 | /* Reset queues and counts */ | |
1306 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1307 | tw_dev->free_queue[i] = i; | |
1308 | tw_dev->state[i] = TW_S_INITIAL; | |
1309 | } | |
1310 | tw_dev->free_head = TW_Q_START; | |
1311 | tw_dev->free_tail = TW_Q_START; | |
1312 | tw_dev->posted_request_count = 0; | |
1313 | tw_dev->pending_request_count = 0; | |
1314 | tw_dev->pending_head = TW_Q_START; | |
1315 | tw_dev->pending_tail = TW_Q_START; | |
1316 | tw_dev->reset_print = 0; | |
1317 | ||
1318 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1319 | ||
1320 | if (tw_reset_sequence(tw_dev)) { | |
1321 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev->host->host_no); | |
1322 | return 1; | |
1323 | } | |
1da177e4 | 1324 | |
4fe48187 | 1325 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
1326 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
1327 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1da177e4 LT |
1328 | |
1329 | return 0; | |
1330 | } /* End tw_reset_device_extension() */ | |
1331 | ||
1332 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | |
1333 | static int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, | |
1334 | sector_t capacity, int geom[]) | |
1335 | { | |
1336 | int heads, sectors, cylinders; | |
1337 | TW_Device_Extension *tw_dev; | |
1338 | ||
1339 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n"); | |
1340 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | |
1341 | ||
1342 | heads = 64; | |
1343 | sectors = 32; | |
1344 | cylinders = sector_div(capacity, heads * sectors); | |
1345 | ||
1346 | if (capacity >= 0x200000) { | |
1347 | heads = 255; | |
1348 | sectors = 63; | |
1349 | cylinders = sector_div(capacity, heads * sectors); | |
1350 | } | |
1351 | ||
1352 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads, sectors, cylinders); | |
1353 | geom[0] = heads; | |
1354 | geom[1] = sectors; | |
1355 | geom[2] = cylinders; | |
1356 | ||
1357 | return 0; | |
1358 | } /* End tw_scsi_biosparam() */ | |
1359 | ||
1360 | /* This is the new scsi eh reset function */ | |
1361 | static int tw_scsi_eh_reset(struct scsi_cmnd *SCpnt) | |
1362 | { | |
1363 | TW_Device_Extension *tw_dev=NULL; | |
1364 | int retval = FAILED; | |
1365 | ||
1366 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1367 | ||
1da177e4 LT |
1368 | tw_dev->num_resets++; |
1369 | ||
017560fc JG |
1370 | sdev_printk(KERN_WARNING, SCpnt->device, |
1371 | "WARNING: Command (0x%x) timed out, resetting card.\n", | |
1372 | SCpnt->cmnd[0]); | |
1da177e4 | 1373 | |
4fe48187 | 1374 | /* Make sure we are not issuing an ioctl or resetting from ioctl */ |
1375 | mutex_lock(&tw_dev->ioctl_lock); | |
1376 | ||
1da177e4 | 1377 | /* Now reset the card and some of the device extension data */ |
4fe48187 | 1378 | if (tw_reset_device_extension(tw_dev)) { |
1da177e4 LT |
1379 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n", tw_dev->host->host_no); |
1380 | goto out; | |
1381 | } | |
1382 | ||
1383 | retval = SUCCESS; | |
1384 | out: | |
4fe48187 | 1385 | mutex_unlock(&tw_dev->ioctl_lock); |
1da177e4 LT |
1386 | return retval; |
1387 | } /* End tw_scsi_eh_reset() */ | |
1388 | ||
1389 | /* This function handles scsi inquiry commands */ | |
1390 | static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id) | |
1391 | { | |
1392 | TW_Param *param; | |
1393 | TW_Command *command_packet; | |
1394 | unsigned long command_que_value; | |
1395 | unsigned long param_value; | |
1396 | ||
1397 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n"); | |
1398 | ||
1399 | /* Initialize command packet */ | |
1400 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1401 | if (command_packet == NULL) { | |
1402 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n"); | |
1403 | return 1; | |
1404 | } | |
1405 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1406 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1407 | command_packet->size = 4; | |
1408 | command_packet->request_id = request_id; | |
1409 | command_packet->status = 0; | |
1410 | command_packet->flags = 0; | |
1411 | command_packet->byte6.parameter_count = 1; | |
1412 | ||
1413 | /* Now setup the param */ | |
1414 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1415 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n"); | |
1416 | return 1; | |
1417 | } | |
1418 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1419 | memset(param, 0, sizeof(TW_Sector)); | |
1420 | param->table_id = 3; /* unit summary table */ | |
1421 | param->parameter_id = 3; /* unitsstatus parameter */ | |
1422 | param->parameter_size_bytes = TW_MAX_UNITS; | |
1423 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1424 | if (param_value == 0) { | |
1425 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n"); | |
1426 | return 1; | |
1427 | } | |
1428 | ||
1429 | command_packet->byte8.param.sgl[0].address = param_value; | |
1430 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1431 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1432 | if (command_que_value == 0) { | |
1433 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n"); | |
1434 | return 1; | |
1435 | } | |
1436 | ||
1437 | /* Now try to post the command packet */ | |
1438 | tw_post_command_packet(tw_dev, request_id); | |
1439 | ||
1440 | return 0; | |
1441 | } /* End tw_scsiop_inquiry() */ | |
1442 | ||
c9d297c5 JB |
1443 | static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id, |
1444 | void *data, unsigned int len) | |
1445 | { | |
0723d4a8 | 1446 | scsi_sg_copy_from_buffer(tw_dev->srb[request_id], data, len); |
c9d297c5 JB |
1447 | } |
1448 | ||
1da177e4 LT |
1449 | /* This function is called by the isr to complete an inquiry command */ |
1450 | static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id) | |
1451 | { | |
1452 | unsigned char *is_unit_present; | |
c9d297c5 | 1453 | unsigned char request_buffer[36]; |
1da177e4 LT |
1454 | TW_Param *param; |
1455 | ||
1456 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n"); | |
1457 | ||
c9d297c5 | 1458 | memset(request_buffer, 0, sizeof(request_buffer)); |
1da177e4 LT |
1459 | request_buffer[0] = TYPE_DISK; /* Peripheral device type */ |
1460 | request_buffer[1] = 0; /* Device type modifier */ | |
1461 | request_buffer[2] = 0; /* No ansi/iso compliance */ | |
1462 | request_buffer[4] = 31; /* Additional length */ | |
1463 | memcpy(&request_buffer[8], "3ware ", 8); /* Vendor ID */ | |
1464 | sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id); | |
1465 | memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3); | |
c9d297c5 JB |
1466 | tw_transfer_internal(tw_dev, request_id, request_buffer, |
1467 | sizeof(request_buffer)); | |
1da177e4 LT |
1468 | |
1469 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1470 | if (param == NULL) { | |
1471 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n"); | |
1472 | return 1; | |
1473 | } | |
1474 | is_unit_present = &(param->data[0]); | |
1475 | ||
1476 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { | |
1477 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; | |
1478 | } else { | |
1479 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; | |
1480 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); | |
1481 | return TW_ISR_DONT_RESULT; | |
1482 | } | |
1483 | ||
1484 | return 0; | |
1485 | } /* End tw_scsiop_inquiry_complete() */ | |
1486 | ||
1487 | /* This function handles scsi mode_sense commands */ | |
1488 | static int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id) | |
1489 | { | |
1490 | TW_Param *param; | |
1491 | TW_Command *command_packet; | |
1492 | unsigned long command_que_value; | |
1493 | unsigned long param_value; | |
1494 | ||
1495 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n"); | |
1496 | ||
1497 | /* Only page control = 0, page code = 0x8 (cache page) supported */ | |
1498 | if (tw_dev->srb[request_id]->cmnd[2] != 0x8) { | |
1499 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1500 | tw_state_request_finish(tw_dev, request_id); | |
1501 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
1502 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1503 | return 0; | |
1504 | } | |
1505 | ||
1506 | /* Now read firmware cache setting for this unit */ | |
1507 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1508 | if (command_packet == NULL) { | |
1509 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n"); | |
1510 | return 1; | |
1511 | } | |
1512 | ||
1513 | /* Setup the command packet */ | |
1514 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1515 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1516 | command_packet->size = 4; | |
1517 | command_packet->request_id = request_id; | |
1518 | command_packet->status = 0; | |
1519 | command_packet->flags = 0; | |
1520 | command_packet->byte6.parameter_count = 1; | |
1521 | ||
1522 | /* Setup the param */ | |
1523 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1524 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n"); | |
1525 | return 1; | |
1526 | } | |
1527 | ||
1528 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1529 | memset(param, 0, sizeof(TW_Sector)); | |
1530 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id; | |
1531 | param->parameter_id = 7; /* unit flags */ | |
1532 | param->parameter_size_bytes = 1; | |
1533 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1534 | if (param_value == 0) { | |
1535 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n"); | |
1536 | return 1; | |
1537 | } | |
1538 | ||
1539 | command_packet->byte8.param.sgl[0].address = param_value; | |
1540 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1541 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1542 | if (command_que_value == 0) { | |
1543 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n"); | |
1544 | return 1; | |
1545 | } | |
1546 | ||
1547 | /* Now try to post the command packet */ | |
1548 | tw_post_command_packet(tw_dev, request_id); | |
1549 | ||
1550 | return 0; | |
1551 | } /* End tw_scsiop_mode_sense() */ | |
1552 | ||
1553 | /* This function is called by the isr to complete a mode sense command */ | |
1554 | static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id) | |
1555 | { | |
1556 | TW_Param *param; | |
1557 | unsigned char *flags; | |
c9d297c5 | 1558 | unsigned char request_buffer[8]; |
1da177e4 LT |
1559 | |
1560 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n"); | |
1561 | ||
1562 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1563 | if (param == NULL) { | |
1564 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n"); | |
1565 | return 1; | |
1566 | } | |
1567 | flags = (char *)&(param->data[0]); | |
c9d297c5 | 1568 | memset(request_buffer, 0, sizeof(request_buffer)); |
1da177e4 LT |
1569 | |
1570 | request_buffer[0] = 0xf; /* mode data length */ | |
1571 | request_buffer[1] = 0; /* default medium type */ | |
1572 | request_buffer[2] = 0x10; /* dpo/fua support on */ | |
1573 | request_buffer[3] = 0; /* no block descriptors */ | |
1574 | request_buffer[4] = 0x8; /* caching page */ | |
1575 | request_buffer[5] = 0xa; /* page length */ | |
1576 | if (*flags & 0x1) | |
4fe48187 | 1577 | request_buffer[6] = 0x5; /* WCE on, RCD on */ |
1da177e4 | 1578 | else |
4fe48187 | 1579 | request_buffer[6] = 0x1; /* WCE off, RCD on */ |
c9d297c5 JB |
1580 | tw_transfer_internal(tw_dev, request_id, request_buffer, |
1581 | sizeof(request_buffer)); | |
1da177e4 LT |
1582 | |
1583 | return 0; | |
1584 | } /* End tw_scsiop_mode_sense_complete() */ | |
1585 | ||
1586 | /* This function handles scsi read_capacity commands */ | |
1587 | static int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id) | |
1588 | { | |
1589 | TW_Param *param; | |
1590 | TW_Command *command_packet; | |
1591 | unsigned long command_que_value; | |
1592 | unsigned long param_value; | |
1593 | ||
1594 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n"); | |
1595 | ||
1596 | /* Initialize command packet */ | |
1597 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1598 | ||
1599 | if (command_packet == NULL) { | |
1600 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n"); | |
1601 | return 1; | |
1602 | } | |
1603 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1604 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1605 | command_packet->size = 4; | |
1606 | command_packet->request_id = request_id; | |
1607 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); | |
1608 | command_packet->status = 0; | |
1609 | command_packet->flags = 0; | |
1610 | command_packet->byte6.block_count = 1; | |
1611 | ||
1612 | /* Now setup the param */ | |
1613 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1614 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n"); | |
1615 | return 1; | |
1616 | } | |
1617 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1618 | memset(param, 0, sizeof(TW_Sector)); | |
1619 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + | |
1620 | tw_dev->srb[request_id]->device->id; | |
1621 | param->parameter_id = 4; /* unitcapacity parameter */ | |
1622 | param->parameter_size_bytes = 4; | |
1623 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1624 | if (param_value == 0) { | |
1625 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n"); | |
1626 | return 1; | |
1627 | } | |
1628 | ||
1629 | command_packet->byte8.param.sgl[0].address = param_value; | |
1630 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1631 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1632 | if (command_que_value == 0) { | |
1633 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n"); | |
1634 | return 1; | |
1635 | } | |
1636 | ||
1637 | /* Now try to post the command to the board */ | |
1638 | tw_post_command_packet(tw_dev, request_id); | |
1639 | ||
1640 | return 0; | |
1641 | } /* End tw_scsiop_read_capacity() */ | |
1642 | ||
1643 | /* This function is called by the isr to complete a readcapacity command */ | |
1644 | static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id) | |
1645 | { | |
1646 | unsigned char *param_data; | |
1647 | u32 capacity; | |
c9d297c5 | 1648 | char buff[8]; |
1da177e4 LT |
1649 | TW_Param *param; |
1650 | ||
1651 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n"); | |
1652 | ||
c9d297c5 | 1653 | memset(buff, 0, sizeof(buff)); |
1da177e4 LT |
1654 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1655 | if (param == NULL) { | |
1656 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n"); | |
1657 | return 1; | |
1658 | } | |
1659 | param_data = &(param->data[0]); | |
1660 | ||
1661 | capacity = (param_data[3] << 24) | (param_data[2] << 16) | | |
1662 | (param_data[1] << 8) | param_data[0]; | |
1663 | ||
1664 | /* Subtract one sector to fix get last sector ioctl */ | |
1665 | capacity -= 1; | |
1666 | ||
1667 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity); | |
1668 | ||
1669 | /* Number of LBA's */ | |
1670 | buff[0] = (capacity >> 24); | |
1671 | buff[1] = (capacity >> 16) & 0xff; | |
1672 | buff[2] = (capacity >> 8) & 0xff; | |
1673 | buff[3] = capacity & 0xff; | |
1674 | ||
1675 | /* Block size in bytes (512) */ | |
1676 | buff[4] = (TW_BLOCK_SIZE >> 24); | |
1677 | buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff; | |
1678 | buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff; | |
1679 | buff[7] = TW_BLOCK_SIZE & 0xff; | |
1680 | ||
c9d297c5 JB |
1681 | tw_transfer_internal(tw_dev, request_id, buff, sizeof(buff)); |
1682 | ||
1da177e4 LT |
1683 | return 0; |
1684 | } /* End tw_scsiop_read_capacity_complete() */ | |
1685 | ||
1686 | /* This function handles scsi read or write commands */ | |
1687 | static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id) | |
1688 | { | |
1689 | TW_Command *command_packet; | |
1690 | unsigned long command_que_value; | |
6edae708 | 1691 | u32 lba = 0x0, num_sectors = 0x0; |
1da177e4 LT |
1692 | int i, use_sg; |
1693 | struct scsi_cmnd *srb; | |
6edae708 | 1694 | struct scatterlist *sglist, *sg; |
1da177e4 LT |
1695 | |
1696 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n"); | |
1697 | ||
6edae708 FT |
1698 | srb = tw_dev->srb[request_id]; |
1699 | ||
1700 | sglist = scsi_sglist(srb); | |
1701 | if (!sglist) { | |
1da177e4 LT |
1702 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n"); |
1703 | return 1; | |
1704 | } | |
1da177e4 LT |
1705 | |
1706 | /* Initialize command packet */ | |
1707 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1708 | if (command_packet == NULL) { | |
1709 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n"); | |
1710 | return 1; | |
1711 | } | |
1712 | ||
1713 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) { | |
1714 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_READ); | |
1715 | } else { | |
1716 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_WRITE); | |
1717 | } | |
1718 | ||
1719 | command_packet->size = 3; | |
1720 | command_packet->request_id = request_id; | |
1721 | command_packet->unit__hostid = TW_UNITHOST_IN(0, srb->device->id); | |
1722 | command_packet->status = 0; | |
1723 | command_packet->flags = 0; | |
1724 | ||
1725 | if (srb->cmnd[0] == WRITE_10) { | |
1726 | if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10)) | |
1727 | command_packet->flags = 1; | |
1728 | } | |
1729 | ||
1730 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) { | |
1731 | lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3]; | |
1732 | num_sectors = (u32)srb->cmnd[4]; | |
1733 | } else { | |
1734 | lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5]; | |
1735 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); | |
1736 | } | |
1737 | ||
1738 | /* Update sector statistic */ | |
1739 | tw_dev->sector_count = num_sectors; | |
1740 | if (tw_dev->sector_count > tw_dev->max_sector_count) | |
1741 | tw_dev->max_sector_count = tw_dev->sector_count; | |
1742 | ||
1743 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba, num_sectors); | |
1744 | command_packet->byte8.io.lba = lba; | |
1745 | command_packet->byte6.block_count = num_sectors; | |
1746 | ||
9cd95546 CH |
1747 | use_sg = scsi_dma_map(srb); |
1748 | if (use_sg <= 0) | |
6edae708 | 1749 | return 1; |
1da177e4 | 1750 | |
6edae708 FT |
1751 | scsi_for_each_sg(tw_dev->srb[request_id], sg, use_sg, i) { |
1752 | command_packet->byte8.io.sgl[i].address = sg_dma_address(sg); | |
1753 | command_packet->byte8.io.sgl[i].length = sg_dma_len(sg); | |
1da177e4 LT |
1754 | command_packet->size+=2; |
1755 | } | |
1756 | ||
1da177e4 | 1757 | /* Update SG statistics */ |
6edae708 | 1758 | tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]); |
1da177e4 LT |
1759 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) |
1760 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | |
1761 | ||
1762 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1763 | if (command_que_value == 0) { | |
1764 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n"); | |
1765 | return 1; | |
1766 | } | |
1767 | ||
1768 | /* Now try to post the command to the board */ | |
1769 | tw_post_command_packet(tw_dev, request_id); | |
1770 | ||
1771 | return 0; | |
1772 | } /* End tw_scsiop_read_write() */ | |
1773 | ||
1774 | /* This function will handle the request sense scsi command */ | |
1775 | static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id) | |
1776 | { | |
6e3b2bbb JB |
1777 | char request_buffer[18]; |
1778 | ||
1da177e4 LT |
1779 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n"); |
1780 | ||
6e3b2bbb JB |
1781 | memset(request_buffer, 0, sizeof(request_buffer)); |
1782 | request_buffer[0] = 0x70; /* Immediate fixed format */ | |
1783 | request_buffer[7] = 10; /* minimum size per SPC: 18 bytes */ | |
1784 | /* leave all other fields zero, giving effectively NO_SENSE return */ | |
1785 | tw_transfer_internal(tw_dev, request_id, request_buffer, | |
1786 | sizeof(request_buffer)); | |
1787 | ||
1da177e4 LT |
1788 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1789 | tw_state_request_finish(tw_dev, request_id); | |
1790 | ||
1791 | /* If we got a request_sense, we probably want a reset, return error */ | |
1792 | tw_dev->srb[request_id]->result = (DID_ERROR << 16); | |
1793 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1794 | ||
1795 | return 0; | |
1796 | } /* End tw_scsiop_request_sense() */ | |
1797 | ||
1798 | /* This function will handle synchronize cache scsi command */ | |
1799 | static int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id) | |
1800 | { | |
1801 | TW_Command *command_packet; | |
1802 | unsigned long command_que_value; | |
1803 | ||
1804 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n"); | |
1805 | ||
1806 | /* Send firmware flush command for this unit */ | |
1807 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1808 | if (command_packet == NULL) { | |
1809 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n"); | |
1810 | return 1; | |
1811 | } | |
1812 | ||
1813 | /* Setup the command packet */ | |
1814 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1815 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE); | |
1816 | command_packet->size = 2; | |
1817 | command_packet->request_id = request_id; | |
1818 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); | |
1819 | command_packet->status = 0; | |
1820 | command_packet->flags = 0; | |
1821 | command_packet->byte6.parameter_count = 1; | |
1822 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1823 | if (command_que_value == 0) { | |
1824 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n"); | |
1825 | return 1; | |
1826 | } | |
1827 | ||
1828 | /* Now try to post the command packet */ | |
1829 | tw_post_command_packet(tw_dev, request_id); | |
1830 | ||
1831 | return 0; | |
1832 | } /* End tw_scsiop_synchronize_cache() */ | |
1833 | ||
1834 | /* This function will handle test unit ready scsi command */ | |
1835 | static int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id) | |
1836 | { | |
1837 | TW_Param *param; | |
1838 | TW_Command *command_packet; | |
1839 | unsigned long command_que_value; | |
1840 | unsigned long param_value; | |
1841 | ||
1842 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n"); | |
1843 | ||
1844 | /* Initialize command packet */ | |
1845 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1846 | if (command_packet == NULL) { | |
1847 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n"); | |
1848 | return 1; | |
1849 | } | |
1850 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1851 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1852 | command_packet->size = 4; | |
1853 | command_packet->request_id = request_id; | |
1854 | command_packet->status = 0; | |
1855 | command_packet->flags = 0; | |
1856 | command_packet->byte6.parameter_count = 1; | |
1857 | ||
1858 | /* Now setup the param */ | |
1859 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1860 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n"); | |
1861 | return 1; | |
1862 | } | |
1863 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1864 | memset(param, 0, sizeof(TW_Sector)); | |
1865 | param->table_id = 3; /* unit summary table */ | |
1866 | param->parameter_id = 3; /* unitsstatus parameter */ | |
1867 | param->parameter_size_bytes = TW_MAX_UNITS; | |
1868 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1869 | if (param_value == 0) { | |
1870 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n"); | |
1871 | return 1; | |
1872 | } | |
1873 | ||
1874 | command_packet->byte8.param.sgl[0].address = param_value; | |
1875 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1876 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1877 | if (command_que_value == 0) { | |
1878 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n"); | |
1879 | return 1; | |
1880 | } | |
1881 | ||
1882 | /* Now try to post the command packet */ | |
1883 | tw_post_command_packet(tw_dev, request_id); | |
1884 | ||
1885 | return 0; | |
1886 | } /* End tw_scsiop_test_unit_ready() */ | |
1887 | ||
1888 | /* This function is called by the isr to complete a testunitready command */ | |
1889 | static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id) | |
1890 | { | |
1891 | unsigned char *is_unit_present; | |
1892 | TW_Param *param; | |
1893 | ||
1894 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n"); | |
1895 | ||
1896 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1897 | if (param == NULL) { | |
1898 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n"); | |
1899 | return 1; | |
1900 | } | |
1901 | is_unit_present = &(param->data[0]); | |
1902 | ||
1903 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { | |
1904 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; | |
1905 | } else { | |
1906 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; | |
1907 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); | |
1908 | return TW_ISR_DONT_RESULT; | |
1909 | } | |
1910 | ||
1911 | return 0; | |
1912 | } /* End tw_scsiop_test_unit_ready_complete() */ | |
1913 | ||
1914 | /* This is the main scsi queue function to handle scsi opcodes */ | |
f281233d | 1915 | static int tw_scsi_queue_lck(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) |
1da177e4 LT |
1916 | { |
1917 | unsigned char *command = SCpnt->cmnd; | |
1918 | int request_id = 0; | |
1919 | int retval = 1; | |
1920 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1921 | ||
4fe48187 | 1922 | /* If we are resetting due to timed out ioctl, report as busy */ |
1923 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) | |
1924 | return SCSI_MLQUEUE_HOST_BUSY; | |
1925 | ||
1da177e4 LT |
1926 | /* Save done function into Scsi_Cmnd struct */ |
1927 | SCpnt->scsi_done = done; | |
1928 | ||
1929 | /* Queue the command and get a request id */ | |
1930 | tw_state_request_start(tw_dev, &request_id); | |
1931 | ||
1932 | /* Save the scsi command for use by the ISR */ | |
1933 | tw_dev->srb[request_id] = SCpnt; | |
1934 | ||
1da177e4 LT |
1935 | switch (*command) { |
1936 | case READ_10: | |
1937 | case READ_6: | |
1938 | case WRITE_10: | |
1939 | case WRITE_6: | |
1940 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n"); | |
1941 | retval = tw_scsiop_read_write(tw_dev, request_id); | |
1942 | break; | |
1943 | case TEST_UNIT_READY: | |
1944 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n"); | |
1945 | retval = tw_scsiop_test_unit_ready(tw_dev, request_id); | |
1946 | break; | |
1947 | case INQUIRY: | |
1948 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n"); | |
1949 | retval = tw_scsiop_inquiry(tw_dev, request_id); | |
1950 | break; | |
1951 | case READ_CAPACITY: | |
1952 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n"); | |
1953 | retval = tw_scsiop_read_capacity(tw_dev, request_id); | |
1954 | break; | |
1955 | case REQUEST_SENSE: | |
1956 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n"); | |
1957 | retval = tw_scsiop_request_sense(tw_dev, request_id); | |
1958 | break; | |
1959 | case MODE_SENSE: | |
1960 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n"); | |
1961 | retval = tw_scsiop_mode_sense(tw_dev, request_id); | |
1962 | break; | |
1963 | case SYNCHRONIZE_CACHE: | |
1964 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n"); | |
1965 | retval = tw_scsiop_synchronize_cache(tw_dev, request_id); | |
1966 | break; | |
1967 | case TW_IOCTL: | |
1968 | printk(KERN_WARNING "3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n"); | |
1969 | break; | |
1970 | default: | |
1971 | printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev->host->host_no, *command); | |
1972 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1973 | tw_state_request_finish(tw_dev, request_id); | |
28ce280f MP |
1974 | SCpnt->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; |
1975 | scsi_build_sense_buffer(1, SCpnt->sense_buffer, ILLEGAL_REQUEST, 0x20, 0); | |
1da177e4 LT |
1976 | done(SCpnt); |
1977 | retval = 0; | |
1978 | } | |
1979 | if (retval) { | |
1980 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1981 | tw_state_request_finish(tw_dev, request_id); | |
1982 | SCpnt->result = (DID_ERROR << 16); | |
1983 | done(SCpnt); | |
1984 | retval = 0; | |
1985 | } | |
1986 | return retval; | |
1987 | } /* End tw_scsi_queue() */ | |
1988 | ||
f281233d JG |
1989 | static DEF_SCSI_QCMD(tw_scsi_queue) |
1990 | ||
1da177e4 | 1991 | /* This function is the interrupt service routine */ |
7d12e780 | 1992 | static irqreturn_t tw_interrupt(int irq, void *dev_instance) |
1da177e4 LT |
1993 | { |
1994 | int request_id; | |
1995 | u32 status_reg_value; | |
1996 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; | |
1997 | TW_Response_Queue response_que; | |
1998 | int error = 0, retval = 0; | |
1999 | TW_Command *command_packet; | |
2000 | int handled = 0; | |
2001 | ||
2002 | /* Get the host lock for io completions */ | |
2003 | spin_lock(tw_dev->host->host_lock); | |
2004 | ||
2005 | /* Read the registers */ | |
2006 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
2007 | ||
2008 | /* Check if this is our interrupt, otherwise bail */ | |
2009 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) | |
2010 | goto tw_interrupt_bail; | |
2011 | ||
2012 | handled = 1; | |
2013 | ||
4fe48187 | 2014 | /* If we are resetting, bail */ |
2015 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) | |
2016 | goto tw_interrupt_bail; | |
2017 | ||
1da177e4 LT |
2018 | /* Check controller for errors */ |
2019 | if (tw_check_bits(status_reg_value)) { | |
2020 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); | |
2021 | if (tw_decode_bits(tw_dev, status_reg_value, 1)) { | |
2022 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
2023 | goto tw_interrupt_bail; | |
2024 | } | |
2025 | } | |
2026 | ||
2027 | /* Handle host interrupt */ | |
2028 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) { | |
2029 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n"); | |
2030 | TW_CLEAR_HOST_INTERRUPT(tw_dev); | |
2031 | } | |
2032 | ||
2033 | /* Handle attention interrupt */ | |
2034 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { | |
2035 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n"); | |
2036 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
2037 | tw_state_request_start(tw_dev, &request_id); | |
2038 | error = tw_aen_read_queue(tw_dev, request_id); | |
2039 | if (error) { | |
2040 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no); | |
2041 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2042 | tw_state_request_finish(tw_dev, request_id); | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | /* Handle command interrupt */ | |
2047 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { | |
2048 | /* Drain as many pending commands as we can */ | |
2049 | while (tw_dev->pending_request_count > 0) { | |
2050 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; | |
2051 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
2052 | printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no); | |
2053 | break; | |
2054 | } | |
2055 | if (tw_post_command_packet(tw_dev, request_id)==0) { | |
2056 | if (tw_dev->pending_head == TW_Q_LENGTH-1) { | |
2057 | tw_dev->pending_head = TW_Q_START; | |
2058 | } else { | |
2059 | tw_dev->pending_head = tw_dev->pending_head + 1; | |
2060 | } | |
2061 | tw_dev->pending_request_count--; | |
2062 | } else { | |
2063 | /* If we get here, we will continue re-posting on the next command interrupt */ | |
2064 | break; | |
2065 | } | |
2066 | } | |
2067 | /* If there are no more pending requests, we mask command interrupt */ | |
2068 | if (tw_dev->pending_request_count == 0) | |
2069 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
2070 | } | |
2071 | ||
2072 | /* Handle response interrupt */ | |
2073 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { | |
2074 | /* Drain the response queue from the board */ | |
2075 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
2076 | /* Read response queue register */ | |
2077 | response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
2078 | request_id = TW_RESID_OUT(response_que.response_id); | |
2079 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
2080 | error = 0; | |
2081 | ||
2082 | /* Check for bad response */ | |
2083 | if (command_packet->status != 0) { | |
2084 | /* If internal command, don't error, don't fill sense */ | |
2085 | if (tw_dev->srb[request_id] == NULL) { | |
2086 | tw_decode_sense(tw_dev, request_id, 0); | |
2087 | } else { | |
2088 | error = tw_decode_sense(tw_dev, request_id, 1); | |
2089 | } | |
2090 | } | |
2091 | ||
2092 | /* Check for correct state */ | |
2093 | if (tw_dev->state[request_id] != TW_S_POSTED) { | |
2094 | if (tw_dev->srb[request_id] != NULL) { | |
2095 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no); | |
2096 | error = 1; | |
2097 | } | |
2098 | } | |
2099 | ||
2100 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id); | |
2101 | ||
2102 | /* Check for internal command completion */ | |
2103 | if (tw_dev->srb[request_id] == NULL) { | |
2104 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n"); | |
2105 | /* Check for chrdev ioctl completion */ | |
2106 | if (request_id != tw_dev->chrdev_request_id) { | |
2107 | retval = tw_aen_complete(tw_dev, request_id); | |
2108 | if (retval) { | |
2109 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no); | |
2110 | } | |
2111 | } else { | |
2112 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
2113 | wake_up(&tw_dev->ioctl_wqueue); | |
2114 | } | |
2115 | } else { | |
2116 | switch (tw_dev->srb[request_id]->cmnd[0]) { | |
2117 | case READ_10: | |
2118 | case READ_6: | |
2119 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n"); | |
2120 | break; | |
2121 | case WRITE_10: | |
2122 | case WRITE_6: | |
2123 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n"); | |
2124 | break; | |
2125 | case TEST_UNIT_READY: | |
2126 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n"); | |
2127 | error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id); | |
2128 | break; | |
2129 | case INQUIRY: | |
2130 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n"); | |
2131 | error = tw_scsiop_inquiry_complete(tw_dev, request_id); | |
2132 | break; | |
2133 | case READ_CAPACITY: | |
2134 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n"); | |
2135 | error = tw_scsiop_read_capacity_complete(tw_dev, request_id); | |
2136 | break; | |
2137 | case MODE_SENSE: | |
2138 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n"); | |
2139 | error = tw_scsiop_mode_sense_complete(tw_dev, request_id); | |
2140 | break; | |
2141 | case SYNCHRONIZE_CACHE: | |
2142 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n"); | |
2143 | break; | |
2144 | default: | |
2145 | printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n"); | |
2146 | error = 1; | |
2147 | } | |
2148 | ||
2149 | /* If no error command was a success */ | |
2150 | if (error == 0) { | |
2151 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
2152 | } | |
2153 | ||
2154 | /* If error, command failed */ | |
2155 | if (error == 1) { | |
2156 | /* Ask for a host reset */ | |
2157 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); | |
2158 | } | |
2159 | ||
2160 | /* Now complete the io */ | |
2161 | if ((error != TW_ISR_DONT_COMPLETE)) { | |
9cd95546 CH |
2162 | scsi_dma_unmap(tw_dev->srb[request_id]); |
2163 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1da177e4 LT |
2164 | tw_dev->state[request_id] = TW_S_COMPLETED; |
2165 | tw_state_request_finish(tw_dev, request_id); | |
2166 | tw_dev->posted_request_count--; | |
1da177e4 LT |
2167 | } |
2168 | } | |
2169 | ||
2170 | /* Check for valid status after each drain */ | |
2171 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
2172 | if (tw_check_bits(status_reg_value)) { | |
2173 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); | |
2174 | if (tw_decode_bits(tw_dev, status_reg_value, 1)) { | |
2175 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
2176 | goto tw_interrupt_bail; | |
2177 | } | |
2178 | } | |
2179 | } | |
2180 | } | |
2181 | ||
2182 | tw_interrupt_bail: | |
2183 | spin_unlock(tw_dev->host->host_lock); | |
2184 | return IRQ_RETVAL(handled); | |
2185 | } /* End tw_interrupt() */ | |
2186 | ||
2187 | /* This function tells the controller to shut down */ | |
2188 | static void __tw_shutdown(TW_Device_Extension *tw_dev) | |
2189 | { | |
2190 | /* Disable interrupts */ | |
2191 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2192 | ||
4fe48187 | 2193 | /* Free up the IRQ */ |
2194 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
2195 | ||
1da177e4 LT |
2196 | printk(KERN_WARNING "3w-xxxx: Shutting down host %d.\n", tw_dev->host->host_no); |
2197 | ||
2198 | /* Tell the card we are shutting down */ | |
2199 | if (tw_initconnection(tw_dev, 1)) { | |
2200 | printk(KERN_WARNING "3w-xxxx: Connection shutdown failed.\n"); | |
2201 | } else { | |
2202 | printk(KERN_WARNING "3w-xxxx: Shutdown complete.\n"); | |
2203 | } | |
2204 | ||
2205 | /* Clear all interrupts just before exit */ | |
2206 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2207 | } /* End __tw_shutdown() */ | |
2208 | ||
2209 | /* Wrapper for __tw_shutdown */ | |
d18c3db5 | 2210 | static void tw_shutdown(struct pci_dev *pdev) |
1da177e4 | 2211 | { |
d18c3db5 | 2212 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
1da177e4 LT |
2213 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
2214 | ||
2215 | __tw_shutdown(tw_dev); | |
2216 | } /* End tw_shutdown() */ | |
2217 | ||
4deedd84 | 2218 | /* This function gets called when a disk is coming online */ |
2219 | static int tw_slave_configure(struct scsi_device *sdev) | |
2220 | { | |
2221 | /* Force 60 second timeout */ | |
2222 | blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); | |
2223 | ||
2224 | return 0; | |
2225 | } /* End tw_slave_configure() */ | |
2226 | ||
1da177e4 LT |
2227 | static struct scsi_host_template driver_template = { |
2228 | .module = THIS_MODULE, | |
2229 | .name = "3ware Storage Controller", | |
2230 | .queuecommand = tw_scsi_queue, | |
2231 | .eh_host_reset_handler = tw_scsi_eh_reset, | |
2232 | .bios_param = tw_scsi_biosparam, | |
db5ed4df | 2233 | .change_queue_depth = scsi_change_queue_depth, |
1da177e4 | 2234 | .can_queue = TW_Q_LENGTH-2, |
4deedd84 | 2235 | .slave_configure = tw_slave_configure, |
1da177e4 LT |
2236 | .this_id = -1, |
2237 | .sg_tablesize = TW_MAX_SGL_LENGTH, | |
2238 | .max_sectors = TW_MAX_SECTORS, | |
2239 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | |
2240 | .use_clustering = ENABLE_CLUSTERING, | |
2241 | .shost_attrs = tw_host_attrs, | |
54b2b50c MP |
2242 | .emulated = 1, |
2243 | .no_write_same = 1, | |
1da177e4 LT |
2244 | }; |
2245 | ||
2246 | /* This function will probe and initialize a card */ | |
6f039790 | 2247 | static int tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) |
1da177e4 LT |
2248 | { |
2249 | struct Scsi_Host *host = NULL; | |
2250 | TW_Device_Extension *tw_dev; | |
2251 | int retval = -ENODEV; | |
2252 | ||
2253 | retval = pci_enable_device(pdev); | |
2254 | if (retval) { | |
2255 | printk(KERN_WARNING "3w-xxxx: Failed to enable pci device."); | |
2256 | goto out_disable_device; | |
2257 | } | |
2258 | ||
2259 | pci_set_master(pdev); | |
2260 | ||
2261 | retval = pci_set_dma_mask(pdev, TW_DMA_MASK); | |
2262 | if (retval) { | |
2263 | printk(KERN_WARNING "3w-xxxx: Failed to set dma mask."); | |
2264 | goto out_disable_device; | |
2265 | } | |
2266 | ||
2267 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | |
2268 | if (!host) { | |
2269 | printk(KERN_WARNING "3w-xxxx: Failed to allocate memory for device extension."); | |
2270 | retval = -ENOMEM; | |
2271 | goto out_disable_device; | |
2272 | } | |
2273 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
2274 | ||
1da177e4 LT |
2275 | /* Save values to device extension */ |
2276 | tw_dev->host = host; | |
2277 | tw_dev->tw_pci_dev = pdev; | |
2278 | ||
2279 | if (tw_initialize_device_extension(tw_dev)) { | |
2280 | printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension."); | |
2281 | goto out_free_device_extension; | |
2282 | } | |
2283 | ||
2284 | /* Request IO regions */ | |
2285 | retval = pci_request_regions(pdev, "3w-xxxx"); | |
2286 | if (retval) { | |
2287 | printk(KERN_WARNING "3w-xxxx: Failed to get mem region."); | |
2288 | goto out_free_device_extension; | |
2289 | } | |
2290 | ||
2291 | /* Save base address */ | |
2292 | tw_dev->base_addr = pci_resource_start(pdev, 0); | |
2293 | if (!tw_dev->base_addr) { | |
2294 | printk(KERN_WARNING "3w-xxxx: Failed to get io address."); | |
2295 | goto out_release_mem_region; | |
2296 | } | |
2297 | ||
2298 | /* Disable interrupts on the card */ | |
2299 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2300 | ||
2301 | /* Initialize the card */ | |
2302 | if (tw_reset_sequence(tw_dev)) | |
2303 | goto out_release_mem_region; | |
2304 | ||
2305 | /* Set host specific parameters */ | |
2306 | host->max_id = TW_MAX_UNITS; | |
2307 | host->max_cmd_len = TW_MAX_CDB_LEN; | |
2308 | ||
2309 | /* Luns and channels aren't supported by adapter */ | |
2310 | host->max_lun = 0; | |
2311 | host->max_channel = 0; | |
2312 | ||
2313 | /* Register the card with the kernel SCSI layer */ | |
2314 | retval = scsi_add_host(host, &pdev->dev); | |
2315 | if (retval) { | |
2316 | printk(KERN_WARNING "3w-xxxx: scsi add host failed"); | |
2317 | goto out_release_mem_region; | |
2318 | } | |
2319 | ||
2320 | pci_set_drvdata(pdev, host); | |
2321 | ||
2322 | 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); | |
2323 | ||
2324 | /* Now setup the interrupt handler */ | |
1d6f359a | 2325 | retval = request_irq(pdev->irq, tw_interrupt, IRQF_SHARED, "3w-xxxx", tw_dev); |
1da177e4 LT |
2326 | if (retval) { |
2327 | printk(KERN_WARNING "3w-xxxx: Error requesting IRQ."); | |
2328 | goto out_remove_host; | |
2329 | } | |
2330 | ||
2331 | tw_device_extension_list[tw_device_extension_count] = tw_dev; | |
2332 | tw_device_extension_count++; | |
2333 | ||
2334 | /* Re-enable interrupts on the card */ | |
2335 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2336 | ||
2337 | /* Finally, scan the host */ | |
2338 | scsi_scan_host(host); | |
2339 | ||
2340 | if (twe_major == -1) { | |
2341 | if ((twe_major = register_chrdev (0, "twe", &tw_fops)) < 0) | |
2342 | printk(KERN_WARNING "3w-xxxx: Failed to register character device."); | |
2343 | } | |
2344 | return 0; | |
2345 | ||
2346 | out_remove_host: | |
2347 | scsi_remove_host(host); | |
2348 | out_release_mem_region: | |
2349 | pci_release_regions(pdev); | |
2350 | out_free_device_extension: | |
2351 | tw_free_device_extension(tw_dev); | |
2352 | scsi_host_put(host); | |
2353 | out_disable_device: | |
2354 | pci_disable_device(pdev); | |
2355 | ||
2356 | return retval; | |
2357 | } /* End tw_probe() */ | |
2358 | ||
2359 | /* This function is called to remove a device */ | |
2360 | static void tw_remove(struct pci_dev *pdev) | |
2361 | { | |
2362 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2363 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2364 | ||
2365 | scsi_remove_host(tw_dev->host); | |
2366 | ||
2367 | /* Unregister character device */ | |
2368 | if (twe_major >= 0) { | |
2369 | unregister_chrdev(twe_major, "twe"); | |
2370 | twe_major = -1; | |
2371 | } | |
2372 | ||
1da177e4 LT |
2373 | /* Shutdown the card */ |
2374 | __tw_shutdown(tw_dev); | |
2375 | ||
2376 | /* Free up the mem region */ | |
2377 | pci_release_regions(pdev); | |
2378 | ||
2379 | /* Free up device extension resources */ | |
2380 | tw_free_device_extension(tw_dev); | |
2381 | ||
2382 | scsi_host_put(tw_dev->host); | |
2383 | pci_disable_device(pdev); | |
2384 | tw_device_extension_count--; | |
2385 | } /* End tw_remove() */ | |
2386 | ||
2387 | /* PCI Devices supported by this driver */ | |
6f039790 | 2388 | static struct pci_device_id tw_pci_tbl[] = { |
1da177e4 LT |
2389 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_1000, |
2390 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
2391 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_7000, | |
2392 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
2393 | { } | |
2394 | }; | |
2395 | MODULE_DEVICE_TABLE(pci, tw_pci_tbl); | |
2396 | ||
2397 | /* pci_driver initializer */ | |
2398 | static struct pci_driver tw_driver = { | |
2399 | .name = "3w-xxxx", | |
2400 | .id_table = tw_pci_tbl, | |
2401 | .probe = tw_probe, | |
2402 | .remove = tw_remove, | |
d18c3db5 | 2403 | .shutdown = tw_shutdown, |
1da177e4 LT |
2404 | }; |
2405 | ||
2406 | /* This function is called on driver initialization */ | |
2407 | static int __init tw_init(void) | |
2408 | { | |
2409 | printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | |
2410 | ||
dcbccbde | 2411 | return pci_register_driver(&tw_driver); |
1da177e4 LT |
2412 | } /* End tw_init() */ |
2413 | ||
2414 | /* This function is called on driver exit */ | |
2415 | static void __exit tw_exit(void) | |
2416 | { | |
2417 | pci_unregister_driver(&tw_driver); | |
2418 | } /* End tw_exit() */ | |
2419 | ||
2420 | module_init(tw_init); | |
2421 | module_exit(tw_exit); | |
2422 |