Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | 3w-xxxx.c -- 3ware Storage Controller device driver for Linux. | |
3 | ||
4 | Written By: Adam Radford <linuxraid@amcc.com> | |
5 | Modifications By: Joel Jacobson <linux@3ware.com> | |
6 | Arnaldo Carvalho de Melo <acme@conectiva.com.br> | |
7 | Brad Strand <linux@3ware.com> | |
8 | ||
4fe48187 | 9 | Copyright (C) 1999-2007 3ware Inc. |
1da177e4 LT |
10 | |
11 | Kernel compatiblity By: Andre Hedrick <andre@suse.com> | |
12 | Non-Copyright (C) 2000 Andre Hedrick <andre@suse.com> | |
13 | ||
14 | Further tiny build fixes and trivial hoovering Alan Cox | |
15 | ||
16 | This program is free software; you can redistribute it and/or modify | |
17 | it under the terms of the GNU General Public License as published by | |
18 | the Free Software Foundation; version 2 of the License. | |
19 | ||
20 | This program is distributed in the hope that it will be useful, | |
21 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
23 | GNU General Public License for more details. | |
24 | ||
25 | NO WARRANTY | |
26 | THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR | |
27 | CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT | |
28 | LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, | |
29 | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is | |
30 | solely responsible for determining the appropriateness of using and | |
31 | distributing the Program and assumes all risks associated with its | |
32 | exercise of rights under this Agreement, including but not limited to | |
33 | the risks and costs of program errors, damage to or loss of data, | |
34 | programs or equipment, and unavailability or interruption of operations. | |
35 | ||
36 | DISCLAIMER OF LIABILITY | |
37 | NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY | |
38 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
39 | DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND | |
40 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
41 | TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
42 | USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED | |
43 | HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES | |
44 | ||
45 | You should have received a copy of the GNU General Public License | |
46 | along with this program; if not, write to the Free Software | |
47 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
48 | ||
49 | Bugs/Comments/Suggestions should be mailed to: | |
50 | linuxraid@amcc.com | |
51 | ||
52 | For more information, goto: | |
53 | http://www.amcc.com | |
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. | |
1da177e4 LT |
197 | */ |
198 | ||
199 | #include <linux/module.h> | |
200 | #include <linux/reboot.h> | |
201 | #include <linux/spinlock.h> | |
202 | #include <linux/interrupt.h> | |
203 | #include <linux/moduleparam.h> | |
204 | #include <linux/errno.h> | |
205 | #include <linux/types.h> | |
206 | #include <linux/delay.h> | |
207 | #include <linux/pci.h> | |
208 | #include <linux/time.h> | |
a12e25bd | 209 | #include <linux/mutex.h> |
1da177e4 LT |
210 | #include <asm/io.h> |
211 | #include <asm/irq.h> | |
212 | #include <asm/uaccess.h> | |
213 | #include <scsi/scsi.h> | |
214 | #include <scsi/scsi_host.h> | |
215 | #include <scsi/scsi_tcq.h> | |
216 | #include <scsi/scsi_cmnd.h> | |
217 | #include "3w-xxxx.h" | |
218 | ||
219 | /* Globals */ | |
4fe48187 | 220 | #define TW_DRIVER_VERSION "1.26.02.002" |
1da177e4 LT |
221 | static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT]; |
222 | static int tw_device_extension_count = 0; | |
223 | static int twe_major = -1; | |
224 | ||
225 | /* Module parameters */ | |
226 | MODULE_AUTHOR("AMCC"); | |
227 | MODULE_DESCRIPTION("3ware Storage Controller Linux Driver"); | |
228 | MODULE_LICENSE("GPL"); | |
229 | MODULE_VERSION(TW_DRIVER_VERSION); | |
230 | ||
231 | /* Function prototypes */ | |
4fe48187 | 232 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev); |
1da177e4 LT |
233 | |
234 | /* Functions */ | |
235 | ||
236 | /* This function will check the status register for unexpected bits */ | |
237 | static int tw_check_bits(u32 status_reg_value) | |
238 | { | |
239 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) { | |
240 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value); | |
241 | return 1; | |
242 | } | |
243 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) { | |
244 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value); | |
245 | return 1; | |
246 | } | |
247 | ||
248 | return 0; | |
249 | } /* End tw_check_bits() */ | |
250 | ||
251 | /* This function will print readable messages from status register errors */ | |
252 | static int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host) | |
253 | { | |
254 | char host[16]; | |
255 | ||
256 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n"); | |
257 | ||
258 | if (print_host) | |
259 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | |
260 | else | |
261 | host[0] = '\0'; | |
262 | ||
263 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { | |
264 | printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n", host); | |
265 | outl(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
266 | } | |
267 | ||
268 | if (status_reg_value & TW_STATUS_PCI_ABORT) { | |
269 | printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n", host); | |
270 | outl(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); | |
271 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); | |
272 | } | |
273 | ||
274 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { | |
275 | printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n", host); | |
276 | outl(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
277 | } | |
278 | ||
279 | if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) { | |
280 | printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n", host); | |
281 | outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
282 | } | |
283 | ||
284 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { | |
285 | if (tw_dev->reset_print == 0) { | |
286 | printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n", host); | |
287 | tw_dev->reset_print = 1; | |
288 | } | |
289 | return 1; | |
290 | } | |
291 | ||
292 | return 0; | |
293 | } /* End tw_decode_bits() */ | |
294 | ||
295 | /* This function will poll the status register for a flag */ | |
296 | static int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
297 | { | |
298 | u32 status_reg_value; | |
299 | unsigned long before; | |
300 | int retval = 1; | |
301 | ||
302 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
303 | before = jiffies; | |
304 | ||
305 | if (tw_check_bits(status_reg_value)) | |
306 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
307 | ||
308 | while ((status_reg_value & flag) != flag) { | |
309 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
310 | ||
311 | if (tw_check_bits(status_reg_value)) | |
312 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
313 | ||
314 | if (time_after(jiffies, before + HZ * seconds)) | |
315 | goto out; | |
316 | ||
317 | msleep(50); | |
318 | } | |
319 | retval = 0; | |
320 | out: | |
321 | return retval; | |
322 | } /* End tw_poll_status() */ | |
323 | ||
324 | /* This function will poll the status register for disappearance of a flag */ | |
325 | static int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
326 | { | |
327 | u32 status_reg_value; | |
328 | unsigned long before; | |
329 | int retval = 1; | |
330 | ||
331 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
332 | before = jiffies; | |
333 | ||
334 | if (tw_check_bits(status_reg_value)) | |
335 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
336 | ||
337 | while ((status_reg_value & flag) != 0) { | |
338 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
339 | ||
340 | if (tw_check_bits(status_reg_value)) | |
341 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
342 | ||
343 | if (time_after(jiffies, before + HZ * seconds)) | |
344 | goto out; | |
345 | ||
346 | msleep(50); | |
347 | } | |
348 | retval = 0; | |
349 | out: | |
350 | return retval; | |
351 | } /* End tw_poll_status_gone() */ | |
352 | ||
353 | /* This function will attempt to post a command packet to the board */ | |
354 | static int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id) | |
355 | { | |
356 | u32 status_reg_value; | |
357 | unsigned long command_que_value; | |
358 | ||
359 | dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n"); | |
360 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
361 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
362 | ||
363 | if (tw_check_bits(status_reg_value)) { | |
364 | dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n"); | |
365 | tw_decode_bits(tw_dev, status_reg_value, 1); | |
366 | } | |
367 | ||
368 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { | |
369 | /* We successfully posted the command packet */ | |
370 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
371 | tw_dev->state[request_id] = TW_S_POSTED; | |
372 | tw_dev->posted_request_count++; | |
373 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { | |
374 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | |
375 | } | |
376 | } else { | |
377 | /* Couldn't post the command packet, so we do it in the isr */ | |
378 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
379 | tw_dev->state[request_id] = TW_S_PENDING; | |
380 | tw_dev->pending_request_count++; | |
381 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { | |
382 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; | |
383 | } | |
384 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; | |
385 | if (tw_dev->pending_tail == TW_Q_LENGTH-1) { | |
386 | tw_dev->pending_tail = TW_Q_START; | |
387 | } else { | |
388 | tw_dev->pending_tail = tw_dev->pending_tail + 1; | |
389 | } | |
390 | } | |
391 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); | |
392 | return 1; | |
393 | } | |
394 | return 0; | |
395 | } /* End tw_post_command_packet() */ | |
396 | ||
397 | /* This function will return valid sense buffer information for failed cmds */ | |
398 | static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense) | |
399 | { | |
400 | int i; | |
401 | TW_Command *command; | |
402 | ||
403 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n"); | |
404 | command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
405 | ||
406 | 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)); | |
407 | ||
408 | /* Attempt to return intelligent sense information */ | |
409 | if (fill_sense) { | |
410 | if ((command->status == 0xc7) || (command->status == 0xcb)) { | |
6391a113 | 411 | for (i = 0; i < ARRAY_SIZE(tw_sense_table); i++) { |
1da177e4 LT |
412 | if (command->flags == tw_sense_table[i][0]) { |
413 | ||
414 | /* Valid bit and 'current errors' */ | |
415 | tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70); | |
416 | ||
417 | /* Sense key */ | |
418 | tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1]; | |
419 | ||
420 | /* Additional sense length */ | |
421 | tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */ | |
422 | ||
423 | /* Additional sense code */ | |
424 | tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2]; | |
425 | ||
426 | /* Additional sense code qualifier */ | |
427 | tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3]; | |
428 | ||
429 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); | |
430 | return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */ | |
431 | } | |
432 | } | |
433 | } | |
434 | ||
435 | /* If no table match, error so we get a reset */ | |
436 | return 1; | |
437 | } | |
438 | ||
439 | return 0; | |
440 | } /* End tw_decode_sense() */ | |
441 | ||
442 | /* This function will report controller error status */ | |
443 | static int tw_check_errors(TW_Device_Extension *tw_dev) | |
444 | { | |
445 | u32 status_reg_value; | |
446 | ||
447 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
448 | ||
449 | if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) { | |
450 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
451 | return 1; | |
452 | } | |
453 | ||
454 | return 0; | |
455 | } /* End tw_check_errors() */ | |
456 | ||
457 | /* This function will empty the response que */ | |
458 | static void tw_empty_response_que(TW_Device_Extension *tw_dev) | |
459 | { | |
460 | u32 status_reg_value, response_que_value; | |
461 | ||
462 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
463 | ||
464 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
465 | response_que_value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
466 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
467 | } | |
468 | } /* End tw_empty_response_que() */ | |
469 | ||
470 | /* This function will free a request_id */ | |
471 | static void tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id) | |
472 | { | |
473 | tw_dev->free_queue[tw_dev->free_tail] = request_id; | |
474 | tw_dev->state[request_id] = TW_S_FINISHED; | |
475 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; | |
476 | } /* End tw_state_request_finish() */ | |
477 | ||
478 | /* This function will assign an available request_id */ | |
479 | static void tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id) | |
480 | { | |
481 | *request_id = tw_dev->free_queue[tw_dev->free_head]; | |
482 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; | |
483 | tw_dev->state[*request_id] = TW_S_STARTED; | |
484 | } /* End tw_state_request_start() */ | |
485 | ||
486 | /* Show some statistics about the card */ | |
ee959b00 TJ |
487 | static ssize_t tw_show_stats(struct device *dev, struct device_attribute *attr, |
488 | char *buf) | |
1da177e4 | 489 | { |
ee959b00 | 490 | struct Scsi_Host *host = class_to_shost(dev); |
1da177e4 LT |
491 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
492 | unsigned long flags = 0; | |
493 | ssize_t len; | |
494 | ||
495 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
496 | len = snprintf(buf, PAGE_SIZE, "3w-xxxx Driver version: %s\n" | |
497 | "Current commands posted: %4d\n" | |
498 | "Max commands posted: %4d\n" | |
499 | "Current pending commands: %4d\n" | |
500 | "Max pending commands: %4d\n" | |
501 | "Last sgl length: %4d\n" | |
502 | "Max sgl length: %4d\n" | |
503 | "Last sector count: %4d\n" | |
504 | "Max sector count: %4d\n" | |
505 | "SCSI Host Resets: %4d\n" | |
506 | "AEN's: %4d\n", | |
507 | TW_DRIVER_VERSION, | |
508 | tw_dev->posted_request_count, | |
509 | tw_dev->max_posted_request_count, | |
510 | tw_dev->pending_request_count, | |
511 | tw_dev->max_pending_request_count, | |
512 | tw_dev->sgl_entries, | |
513 | tw_dev->max_sgl_entries, | |
514 | tw_dev->sector_count, | |
515 | tw_dev->max_sector_count, | |
516 | tw_dev->num_resets, | |
517 | tw_dev->aen_count); | |
518 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
519 | return len; | |
520 | } /* End tw_show_stats() */ | |
521 | ||
522 | /* This function will set a devices queue depth */ | |
523 | static int tw_change_queue_depth(struct scsi_device *sdev, int queue_depth) | |
524 | { | |
525 | if (queue_depth > TW_Q_LENGTH-2) | |
526 | queue_depth = TW_Q_LENGTH-2; | |
527 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); | |
528 | return queue_depth; | |
529 | } /* End tw_change_queue_depth() */ | |
530 | ||
531 | /* Create sysfs 'stats' entry */ | |
ee959b00 | 532 | static struct device_attribute tw_host_stats_attr = { |
1da177e4 LT |
533 | .attr = { |
534 | .name = "stats", | |
535 | .mode = S_IRUGO, | |
536 | }, | |
537 | .show = tw_show_stats | |
538 | }; | |
539 | ||
540 | /* Host attributes initializer */ | |
ee959b00 | 541 | static struct device_attribute *tw_host_attrs[] = { |
1da177e4 LT |
542 | &tw_host_stats_attr, |
543 | NULL, | |
544 | }; | |
545 | ||
546 | /* This function will read the aen queue from the isr */ | |
547 | static int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | |
548 | { | |
549 | TW_Command *command_packet; | |
550 | TW_Param *param; | |
551 | unsigned long command_que_value; | |
552 | u32 status_reg_value; | |
553 | unsigned long param_value = 0; | |
554 | ||
555 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_read_queue()\n"); | |
556 | ||
557 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
558 | if (tw_check_bits(status_reg_value)) { | |
559 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n"); | |
560 | tw_decode_bits(tw_dev, status_reg_value, 1); | |
561 | return 1; | |
562 | } | |
563 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
564 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet virtual address.\n"); | |
565 | return 1; | |
566 | } | |
567 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
568 | memset(command_packet, 0, sizeof(TW_Sector)); | |
569 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
570 | command_packet->size = 4; | |
571 | command_packet->request_id = request_id; | |
572 | command_packet->status = 0; | |
573 | command_packet->flags = 0; | |
574 | command_packet->byte6.parameter_count = 1; | |
575 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
576 | if (command_que_value == 0) { | |
577 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet physical address.\n"); | |
578 | return 1; | |
579 | } | |
580 | /* Now setup the param */ | |
581 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
582 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment virtual address.\n"); | |
583 | return 1; | |
584 | } | |
585 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
586 | memset(param, 0, sizeof(TW_Sector)); | |
587 | param->table_id = 0x401; /* AEN table */ | |
588 | param->parameter_id = 2; /* Unit code */ | |
589 | param->parameter_size_bytes = 2; | |
590 | param_value = tw_dev->alignment_physical_address[request_id]; | |
591 | if (param_value == 0) { | |
592 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment physical address.\n"); | |
593 | return 1; | |
594 | } | |
595 | command_packet->byte8.param.sgl[0].address = param_value; | |
596 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
597 | ||
598 | /* Now post the command packet */ | |
599 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { | |
600 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n"); | |
601 | tw_dev->srb[request_id] = NULL; /* Flag internal command */ | |
602 | tw_dev->state[request_id] = TW_S_POSTED; | |
603 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
604 | } else { | |
605 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n"); | |
606 | return 1; | |
607 | } | |
608 | ||
609 | return 0; | |
610 | } /* End tw_aen_read_queue() */ | |
611 | ||
612 | /* This function will complete an aen request from the isr */ | |
613 | static int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id) | |
614 | { | |
615 | TW_Param *param; | |
616 | unsigned short aen; | |
617 | int error = 0, table_max = 0; | |
618 | ||
619 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n"); | |
620 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
621 | printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n"); | |
622 | return 1; | |
623 | } | |
624 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
625 | aen = *(unsigned short *)(param->data); | |
626 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen); | |
627 | ||
628 | /* Print some useful info when certain aen codes come out */ | |
629 | if (aen == 0x0ff) { | |
630 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev->host->host_no); | |
631 | } else { | |
6391a113 | 632 | table_max = ARRAY_SIZE(tw_aen_string); |
1da177e4 LT |
633 | if ((aen & 0x0ff) < table_max) { |
634 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { | |
635 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8); | |
636 | } else { | |
637 | if (aen != 0x0) | |
638 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff]); | |
639 | } | |
640 | } else { | |
641 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev->host->host_no, aen); | |
642 | } | |
643 | } | |
644 | if (aen != TW_AEN_QUEUE_EMPTY) { | |
645 | tw_dev->aen_count++; | |
646 | ||
647 | /* Now queue the code */ | |
648 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; | |
649 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { | |
650 | tw_dev->aen_tail = TW_Q_START; | |
651 | } else { | |
652 | tw_dev->aen_tail = tw_dev->aen_tail + 1; | |
653 | } | |
654 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
655 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
656 | tw_dev->aen_head = TW_Q_START; | |
657 | } else { | |
658 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
659 | } | |
660 | } | |
661 | ||
662 | error = tw_aen_read_queue(tw_dev, request_id); | |
663 | if (error) { | |
664 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev->host->host_no); | |
665 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
666 | tw_state_request_finish(tw_dev, request_id); | |
667 | } | |
668 | } else { | |
669 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
670 | tw_state_request_finish(tw_dev, request_id); | |
671 | } | |
672 | ||
673 | return 0; | |
674 | } /* End tw_aen_complete() */ | |
675 | ||
676 | /* This function will drain the aen queue after a soft reset */ | |
677 | static int tw_aen_drain_queue(TW_Device_Extension *tw_dev) | |
678 | { | |
679 | TW_Command *command_packet; | |
680 | TW_Param *param; | |
681 | int request_id = 0; | |
682 | unsigned long command_que_value; | |
683 | unsigned long param_value; | |
684 | TW_Response_Queue response_queue; | |
685 | unsigned short aen; | |
686 | unsigned short aen_code; | |
687 | int finished = 0; | |
688 | int first_reset = 0; | |
689 | int queue = 0; | |
690 | int found = 0, table_max = 0; | |
691 | ||
692 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n"); | |
693 | ||
694 | if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, 30)) { | |
695 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count); | |
696 | return 1; | |
697 | } | |
698 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
699 | ||
700 | /* Empty response queue */ | |
701 | tw_empty_response_que(tw_dev); | |
702 | ||
703 | /* Initialize command packet */ | |
704 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
705 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n"); | |
706 | return 1; | |
707 | } | |
708 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
709 | memset(command_packet, 0, sizeof(TW_Sector)); | |
710 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
711 | command_packet->size = 4; | |
712 | command_packet->request_id = request_id; | |
713 | command_packet->status = 0; | |
714 | command_packet->flags = 0; | |
715 | command_packet->byte6.parameter_count = 1; | |
716 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
717 | if (command_que_value == 0) { | |
718 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n"); | |
719 | return 1; | |
720 | } | |
721 | ||
722 | /* Now setup the param */ | |
723 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
724 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n"); | |
725 | return 1; | |
726 | } | |
727 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
728 | memset(param, 0, sizeof(TW_Sector)); | |
729 | param->table_id = 0x401; /* AEN table */ | |
730 | param->parameter_id = 2; /* Unit code */ | |
731 | param->parameter_size_bytes = 2; | |
732 | param_value = tw_dev->alignment_physical_address[request_id]; | |
733 | if (param_value == 0) { | |
734 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n"); | |
735 | return 1; | |
736 | } | |
737 | command_packet->byte8.param.sgl[0].address = param_value; | |
738 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
739 | ||
740 | /* Now drain the controller's aen queue */ | |
741 | do { | |
742 | /* Post command packet */ | |
743 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
744 | ||
745 | /* Now poll for completion */ | |
746 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
747 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
748 | request_id = TW_RESID_OUT(response_queue.response_id); | |
749 | ||
750 | if (request_id != 0) { | |
751 | /* Unexpected request id */ | |
752 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n"); | |
753 | return 1; | |
754 | } | |
755 | ||
756 | if (command_packet->status != 0) { | |
757 | if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) { | |
758 | /* Bad response */ | |
759 | tw_decode_sense(tw_dev, request_id, 0); | |
760 | return 1; | |
761 | } else { | |
762 | /* We know this is a 3w-1x00, and doesn't support aen's */ | |
763 | return 0; | |
764 | } | |
765 | } | |
766 | ||
767 | /* Now check the aen */ | |
768 | aen = *(unsigned short *)(param->data); | |
769 | aen_code = (aen & 0x0ff); | |
770 | queue = 0; | |
771 | switch (aen_code) { | |
772 | case TW_AEN_QUEUE_EMPTY: | |
773 | dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
774 | if (first_reset != 1) { | |
775 | return 1; | |
776 | } else { | |
777 | finished = 1; | |
778 | } | |
779 | break; | |
780 | case TW_AEN_SOFT_RESET: | |
781 | if (first_reset == 0) { | |
782 | first_reset = 1; | |
783 | } else { | |
784 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
785 | tw_dev->aen_count++; | |
786 | queue = 1; | |
787 | } | |
788 | break; | |
789 | default: | |
790 | if (aen == 0x0ff) { | |
791 | printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n"); | |
792 | } else { | |
6391a113 | 793 | table_max = ARRAY_SIZE(tw_aen_string); |
1da177e4 LT |
794 | if ((aen & 0x0ff) < table_max) { |
795 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { | |
796 | printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n", tw_aen_string[aen & 0xff], aen >> 8); | |
797 | } else { | |
798 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
799 | } | |
800 | } else | |
801 | printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n", aen); | |
802 | } | |
803 | tw_dev->aen_count++; | |
804 | queue = 1; | |
805 | } | |
806 | ||
807 | /* Now put the aen on the aen_queue */ | |
808 | if (queue == 1) { | |
809 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; | |
810 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { | |
811 | tw_dev->aen_tail = TW_Q_START; | |
812 | } else { | |
813 | tw_dev->aen_tail = tw_dev->aen_tail + 1; | |
814 | } | |
815 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
816 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
817 | tw_dev->aen_head = TW_Q_START; | |
818 | } else { | |
819 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
820 | } | |
821 | } | |
822 | } | |
823 | found = 1; | |
824 | } | |
825 | if (found == 0) { | |
826 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n"); | |
827 | return 1; | |
828 | } | |
829 | } while (finished == 0); | |
830 | ||
831 | return 0; | |
832 | } /* End tw_aen_drain_queue() */ | |
833 | ||
834 | /* This function will allocate memory */ | |
835 | static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | |
836 | { | |
837 | int i; | |
838 | dma_addr_t dma_handle; | |
839 | unsigned long *cpu_addr = NULL; | |
840 | ||
841 | dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n"); | |
842 | ||
843 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); | |
844 | if (cpu_addr == NULL) { | |
845 | printk(KERN_WARNING "3w-xxxx: pci_alloc_consistent() failed.\n"); | |
846 | return 1; | |
847 | } | |
848 | ||
849 | if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) { | |
850 | printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n"); | |
851 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); | |
852 | return 1; | |
853 | } | |
854 | ||
855 | memset(cpu_addr, 0, size*TW_Q_LENGTH); | |
856 | ||
857 | for (i=0;i<TW_Q_LENGTH;i++) { | |
858 | switch(which) { | |
859 | case 0: | |
860 | tw_dev->command_packet_physical_address[i] = dma_handle+(i*size); | |
861 | tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
862 | break; | |
863 | case 1: | |
864 | tw_dev->alignment_physical_address[i] = dma_handle+(i*size); | |
865 | tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
866 | break; | |
867 | default: | |
868 | printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n"); | |
869 | return 1; | |
870 | } | |
871 | } | |
872 | ||
873 | return 0; | |
874 | } /* End tw_allocate_memory() */ | |
875 | ||
876 | /* This function handles ioctl for the character device */ | |
877 | static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
878 | { | |
879 | int request_id; | |
880 | dma_addr_t dma_handle; | |
881 | unsigned short tw_aen_code; | |
882 | unsigned long flags; | |
883 | unsigned int data_buffer_length = 0; | |
884 | unsigned long data_buffer_length_adjusted = 0; | |
885 | unsigned long *cpu_addr; | |
886 | long timeout; | |
887 | TW_New_Ioctl *tw_ioctl; | |
888 | TW_Passthru *passthru; | |
889 | TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)]; | |
890 | int retval = -EFAULT; | |
891 | void __user *argp = (void __user *)arg; | |
892 | ||
893 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n"); | |
894 | ||
895 | /* Only let one of these through at a time */ | |
a12e25bd | 896 | if (mutex_lock_interruptible(&tw_dev->ioctl_lock)) |
1da177e4 LT |
897 | return -EINTR; |
898 | ||
899 | /* First copy down the buffer length */ | |
900 | if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int))) | |
901 | goto out; | |
902 | ||
903 | /* Check size */ | |
904 | if (data_buffer_length > TW_MAX_IOCTL_SECTORS * 512) { | |
905 | retval = -EINVAL; | |
906 | goto out; | |
907 | } | |
908 | ||
909 | /* Hardware can only do multiple of 512 byte transfers */ | |
910 | data_buffer_length_adjusted = (data_buffer_length + 511) & ~511; | |
911 | ||
912 | /* Now allocate ioctl buf memory */ | |
913 | cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, &dma_handle, GFP_KERNEL); | |
914 | if (cpu_addr == NULL) { | |
915 | retval = -ENOMEM; | |
916 | goto out; | |
917 | } | |
918 | ||
919 | tw_ioctl = (TW_New_Ioctl *)cpu_addr; | |
920 | ||
921 | /* Now copy down the entire ioctl */ | |
922 | if (copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl) - 1)) | |
923 | goto out2; | |
924 | ||
925 | passthru = (TW_Passthru *)&tw_ioctl->firmware_command; | |
926 | ||
927 | /* See which ioctl we are doing */ | |
928 | switch (cmd) { | |
929 | case TW_OP_NOP: | |
930 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_OP_NOP.\n"); | |
931 | break; | |
932 | case TW_OP_AEN_LISTEN: | |
933 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n"); | |
934 | memset(tw_ioctl->data_buffer, 0, data_buffer_length); | |
935 | ||
936 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
937 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
938 | tw_aen_code = TW_AEN_QUEUE_EMPTY; | |
939 | } else { | |
940 | tw_aen_code = tw_dev->aen_queue[tw_dev->aen_head]; | |
941 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
942 | tw_dev->aen_head = TW_Q_START; | |
943 | } else { | |
944 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
945 | } | |
946 | } | |
947 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
948 | memcpy(tw_ioctl->data_buffer, &tw_aen_code, sizeof(tw_aen_code)); | |
949 | break; | |
950 | case TW_CMD_PACKET_WITH_DATA: | |
951 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n"); | |
952 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
953 | ||
954 | tw_state_request_start(tw_dev, &request_id); | |
955 | ||
956 | /* Flag internal command */ | |
957 | tw_dev->srb[request_id] = NULL; | |
958 | ||
959 | /* Flag chrdev ioctl */ | |
960 | tw_dev->chrdev_request_id = request_id; | |
961 | ||
962 | tw_ioctl->firmware_command.request_id = request_id; | |
963 | ||
964 | /* Load the sg list */ | |
965 | switch (TW_SGL_OUT(tw_ioctl->firmware_command.opcode__sgloffset)) { | |
966 | case 2: | |
967 | tw_ioctl->firmware_command.byte8.param.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
968 | tw_ioctl->firmware_command.byte8.param.sgl[0].length = data_buffer_length_adjusted; | |
969 | break; | |
970 | case 3: | |
971 | tw_ioctl->firmware_command.byte8.io.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
972 | tw_ioctl->firmware_command.byte8.io.sgl[0].length = data_buffer_length_adjusted; | |
973 | break; | |
974 | case 5: | |
975 | passthru->sg_list[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
976 | passthru->sg_list[0].length = data_buffer_length_adjusted; | |
977 | break; | |
978 | } | |
979 | ||
980 | memcpy(tw_dev->command_packet_virtual_address[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command)); | |
981 | ||
982 | /* Now post the command packet to the controller */ | |
983 | tw_post_command_packet(tw_dev, request_id); | |
984 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
985 | ||
986 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | |
987 | ||
988 | /* Now wait for the command to complete */ | |
989 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | |
990 | ||
1da177e4 LT |
991 | /* We timed out, and didn't get an interrupt */ |
992 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | |
993 | /* Now we need to reset the board */ | |
994 | printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd); | |
995 | retval = -EIO; | |
4fe48187 | 996 | if (tw_reset_device_extension(tw_dev)) { |
1da177e4 LT |
997 | printk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n", tw_dev->host->host_no); |
998 | } | |
999 | goto out2; | |
1000 | } | |
1001 | ||
1002 | /* Now copy in the command packet response */ | |
1003 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command)); | |
1004 | ||
1005 | /* Now complete the io */ | |
1006 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1007 | tw_dev->posted_request_count--; | |
1008 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1009 | tw_state_request_finish(tw_dev, request_id); | |
1010 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1011 | break; | |
1012 | default: | |
1013 | retval = -ENOTTY; | |
1014 | goto out2; | |
1015 | } | |
1016 | ||
1017 | /* Now copy the response to userspace */ | |
1018 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length - 1)) | |
1019 | goto out2; | |
1020 | retval = 0; | |
1021 | out2: | |
1022 | /* Now free ioctl buf memory */ | |
1023 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle); | |
1024 | out: | |
a12e25bd | 1025 | mutex_unlock(&tw_dev->ioctl_lock); |
1da177e4 LT |
1026 | return retval; |
1027 | } /* End tw_chrdev_ioctl() */ | |
1028 | ||
1029 | /* This function handles open for the character device */ | |
d21c95c5 JC |
1030 | /* NOTE that this function races with remove - adding BKL |
1031 | won't help */ | |
1da177e4 LT |
1032 | static int tw_chrdev_open(struct inode *inode, struct file *file) |
1033 | { | |
1034 | unsigned int minor_number; | |
1035 | ||
1036 | dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n"); | |
1037 | ||
1038 | minor_number = iminor(inode); | |
1039 | if (minor_number >= tw_device_extension_count) | |
1040 | return -ENODEV; | |
1041 | ||
1042 | return 0; | |
1043 | } /* End tw_chrdev_open() */ | |
1044 | ||
1045 | /* File operations struct for character device */ | |
00977a59 | 1046 | static const struct file_operations tw_fops = { |
1da177e4 LT |
1047 | .owner = THIS_MODULE, |
1048 | .ioctl = tw_chrdev_ioctl, | |
1049 | .open = tw_chrdev_open, | |
1050 | .release = NULL | |
1051 | }; | |
1052 | ||
1053 | /* This function will free up device extension resources */ | |
1054 | static void tw_free_device_extension(TW_Device_Extension *tw_dev) | |
1055 | { | |
1056 | dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n"); | |
1057 | ||
1058 | /* Free command packet and generic buffer memory */ | |
1059 | if (tw_dev->command_packet_virtual_address[0]) | |
1060 | 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]); | |
1061 | ||
1062 | if (tw_dev->alignment_virtual_address[0]) | |
1063 | 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]); | |
1064 | } /* End tw_free_device_extension() */ | |
1065 | ||
1066 | /* This function will send an initconnection command to controller */ | |
1067 | static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits) | |
1068 | { | |
1069 | unsigned long command_que_value; | |
1070 | TW_Command *command_packet; | |
1071 | TW_Response_Queue response_queue; | |
1072 | int request_id = 0; | |
1073 | ||
1074 | dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n"); | |
1075 | ||
1076 | /* Initialize InitConnection command packet */ | |
1077 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
1078 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n"); | |
1079 | return 1; | |
1080 | } | |
1081 | ||
1082 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1083 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1084 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION); | |
1085 | command_packet->size = TW_INIT_COMMAND_PACKET_SIZE; | |
1086 | command_packet->request_id = request_id; | |
1087 | command_packet->status = 0x0; | |
1088 | command_packet->flags = 0x0; | |
1089 | command_packet->byte6.message_credits = message_credits; | |
1090 | command_packet->byte8.init_connection.response_queue_pointer = 0x0; | |
1091 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1092 | ||
1093 | if (command_que_value == 0) { | |
1094 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n"); | |
1095 | return 1; | |
1096 | } | |
1097 | ||
1098 | /* Send command packet to the board */ | |
1099 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1100 | ||
1101 | /* Poll for completion */ | |
1102 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
1103 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1104 | request_id = TW_RESID_OUT(response_queue.response_id); | |
1105 | ||
1106 | if (request_id != 0) { | |
1107 | /* unexpected request id */ | |
1108 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n"); | |
1109 | return 1; | |
1110 | } | |
1111 | if (command_packet->status != 0) { | |
1112 | /* bad response */ | |
1113 | tw_decode_sense(tw_dev, request_id, 0); | |
1114 | return 1; | |
1115 | } | |
1116 | } | |
1117 | return 0; | |
1118 | } /* End tw_initconnection() */ | |
1119 | ||
1120 | /* Set a value in the features table */ | |
1121 | static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size, | |
1122 | unsigned char *val) | |
1123 | { | |
1124 | TW_Param *param; | |
1125 | TW_Command *command_packet; | |
1126 | TW_Response_Queue response_queue; | |
1127 | int request_id = 0; | |
1128 | unsigned long command_que_value; | |
1129 | unsigned long param_value; | |
1130 | ||
1131 | /* Initialize SetParam command packet */ | |
1132 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
1133 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n"); | |
1134 | return 1; | |
1135 | } | |
1136 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1137 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1138 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1139 | ||
1140 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | |
1141 | param->table_id = 0x404; /* Features table */ | |
1142 | param->parameter_id = parm; | |
1143 | param->parameter_size_bytes = param_size; | |
1144 | memcpy(param->data, val, param_size); | |
1145 | ||
1146 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1147 | if (param_value == 0) { | |
1148 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad alignment physical address.\n"); | |
1149 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1150 | tw_state_request_finish(tw_dev, request_id); | |
1151 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
1152 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1153 | } | |
1154 | command_packet->byte8.param.sgl[0].address = param_value; | |
1155 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1156 | ||
1157 | command_packet->size = 4; | |
1158 | command_packet->request_id = request_id; | |
1159 | command_packet->byte6.parameter_count = 1; | |
1160 | ||
1161 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1162 | if (command_que_value == 0) { | |
1163 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n"); | |
1164 | return 1; | |
1165 | } | |
1166 | ||
1167 | /* Send command packet to the board */ | |
1168 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1169 | ||
1170 | /* Poll for completion */ | |
1171 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
1172 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1173 | request_id = TW_RESID_OUT(response_queue.response_id); | |
1174 | ||
1175 | if (request_id != 0) { | |
1176 | /* unexpected request id */ | |
1177 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n"); | |
1178 | return 1; | |
1179 | } | |
1180 | if (command_packet->status != 0) { | |
1181 | /* bad response */ | |
1182 | tw_decode_sense(tw_dev, request_id, 0); | |
1183 | return 1; | |
1184 | } | |
1185 | } | |
1186 | ||
1187 | return 0; | |
1188 | } /* End tw_setfeature() */ | |
1189 | ||
1190 | /* This function will reset a controller */ | |
1191 | static int tw_reset_sequence(TW_Device_Extension *tw_dev) | |
1192 | { | |
1193 | int error = 0; | |
1194 | int tries = 0; | |
1195 | unsigned char c = 1; | |
1196 | ||
1197 | /* Reset the board */ | |
1198 | while (tries < TW_MAX_RESET_TRIES) { | |
1199 | TW_SOFT_RESET(tw_dev); | |
1200 | ||
1201 | error = tw_aen_drain_queue(tw_dev); | |
1202 | if (error) { | |
1203 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev->host->host_no); | |
1204 | tries++; | |
1205 | continue; | |
1206 | } | |
1207 | ||
1208 | /* Check for controller errors */ | |
1209 | if (tw_check_errors(tw_dev)) { | |
1210 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev->host->host_no); | |
1211 | tries++; | |
1212 | continue; | |
1213 | } | |
1214 | ||
1215 | /* Now the controller is in a good state */ | |
1216 | break; | |
1217 | } | |
1218 | ||
1219 | if (tries >= TW_MAX_RESET_TRIES) { | |
1220 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev->host->host_no); | |
1221 | return 1; | |
1222 | } | |
1223 | ||
1224 | error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS); | |
1225 | if (error) { | |
1226 | printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev->host->host_no); | |
1227 | return 1; | |
1228 | } | |
1229 | ||
1230 | error = tw_setfeature(tw_dev, 2, 1, &c); | |
1231 | if (error) { | |
1232 | printk(KERN_WARNING "3w-xxxx: Unable to set features for card, probable old firmware or card.\n"); | |
1233 | } | |
1234 | ||
1235 | return 0; | |
1236 | } /* End tw_reset_sequence() */ | |
1237 | ||
1238 | /* This function will initialize the fields of a device extension */ | |
1239 | static int tw_initialize_device_extension(TW_Device_Extension *tw_dev) | |
1240 | { | |
1241 | int i, error=0; | |
1242 | ||
1243 | dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_device_extension()\n"); | |
1244 | ||
1245 | /* Initialize command packet buffers */ | |
1246 | error = tw_allocate_memory(tw_dev, sizeof(TW_Command), 0); | |
1247 | if (error) { | |
1248 | printk(KERN_WARNING "3w-xxxx: Command packet memory allocation failed.\n"); | |
1249 | return 1; | |
1250 | } | |
1251 | ||
1252 | /* Initialize generic buffer */ | |
1253 | error = tw_allocate_memory(tw_dev, sizeof(TW_Sector), 1); | |
1254 | if (error) { | |
1255 | printk(KERN_WARNING "3w-xxxx: Generic memory allocation failed.\n"); | |
1256 | return 1; | |
1257 | } | |
1258 | ||
1259 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1260 | tw_dev->free_queue[i] = i; | |
1261 | tw_dev->state[i] = TW_S_INITIAL; | |
1262 | } | |
1263 | ||
1264 | tw_dev->pending_head = TW_Q_START; | |
1265 | tw_dev->pending_tail = TW_Q_START; | |
1266 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1267 | ||
a12e25bd | 1268 | mutex_init(&tw_dev->ioctl_lock); |
1da177e4 LT |
1269 | init_waitqueue_head(&tw_dev->ioctl_wqueue); |
1270 | ||
1271 | return 0; | |
1272 | } /* End tw_initialize_device_extension() */ | |
1273 | ||
1274 | static int tw_map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
1275 | { | |
1276 | int use_sg; | |
1277 | ||
1278 | dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data()\n"); | |
1da177e4 | 1279 | |
6edae708 FT |
1280 | use_sg = scsi_dma_map(cmd); |
1281 | if (use_sg < 0) { | |
1da177e4 LT |
1282 | printk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n"); |
1283 | return 0; | |
1284 | } | |
1285 | ||
1286 | cmd->SCp.phase = TW_PHASE_SGLIST; | |
1287 | cmd->SCp.have_data_in = use_sg; | |
6edae708 | 1288 | |
1da177e4 LT |
1289 | return use_sg; |
1290 | } /* End tw_map_scsi_sg_data() */ | |
1291 | ||
1da177e4 LT |
1292 | static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) |
1293 | { | |
1294 | dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n"); | |
1295 | ||
6edae708 | 1296 | scsi_dma_unmap(cmd); |
1da177e4 LT |
1297 | } /* End tw_unmap_scsi_data() */ |
1298 | ||
1299 | /* This function will reset a device extension */ | |
4fe48187 | 1300 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev) |
1da177e4 LT |
1301 | { |
1302 | int i = 0; | |
1303 | struct scsi_cmnd *srb; | |
1304 | unsigned long flags = 0; | |
1305 | ||
1306 | dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n"); | |
1307 | ||
1308 | set_bit(TW_IN_RESET, &tw_dev->flags); | |
1309 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1310 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1311 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1312 | ||
1313 | /* Abort all requests that are in progress */ | |
1314 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1315 | if ((tw_dev->state[i] != TW_S_FINISHED) && | |
1316 | (tw_dev->state[i] != TW_S_INITIAL) && | |
1317 | (tw_dev->state[i] != TW_S_COMPLETED)) { | |
1318 | srb = tw_dev->srb[i]; | |
1319 | if (srb != NULL) { | |
1320 | srb->result = (DID_RESET << 16); | |
1321 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); | |
1322 | tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[i]); | |
1323 | } | |
1324 | } | |
1325 | } | |
1326 | ||
1327 | /* Reset queues and counts */ | |
1328 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1329 | tw_dev->free_queue[i] = i; | |
1330 | tw_dev->state[i] = TW_S_INITIAL; | |
1331 | } | |
1332 | tw_dev->free_head = TW_Q_START; | |
1333 | tw_dev->free_tail = TW_Q_START; | |
1334 | tw_dev->posted_request_count = 0; | |
1335 | tw_dev->pending_request_count = 0; | |
1336 | tw_dev->pending_head = TW_Q_START; | |
1337 | tw_dev->pending_tail = TW_Q_START; | |
1338 | tw_dev->reset_print = 0; | |
1339 | ||
1340 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1341 | ||
1342 | if (tw_reset_sequence(tw_dev)) { | |
1343 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev->host->host_no); | |
1344 | return 1; | |
1345 | } | |
1da177e4 | 1346 | |
4fe48187 | 1347 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); |
1348 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
1349 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1da177e4 LT |
1350 | |
1351 | return 0; | |
1352 | } /* End tw_reset_device_extension() */ | |
1353 | ||
1354 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | |
1355 | static int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, | |
1356 | sector_t capacity, int geom[]) | |
1357 | { | |
1358 | int heads, sectors, cylinders; | |
1359 | TW_Device_Extension *tw_dev; | |
1360 | ||
1361 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n"); | |
1362 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | |
1363 | ||
1364 | heads = 64; | |
1365 | sectors = 32; | |
1366 | cylinders = sector_div(capacity, heads * sectors); | |
1367 | ||
1368 | if (capacity >= 0x200000) { | |
1369 | heads = 255; | |
1370 | sectors = 63; | |
1371 | cylinders = sector_div(capacity, heads * sectors); | |
1372 | } | |
1373 | ||
1374 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads, sectors, cylinders); | |
1375 | geom[0] = heads; | |
1376 | geom[1] = sectors; | |
1377 | geom[2] = cylinders; | |
1378 | ||
1379 | return 0; | |
1380 | } /* End tw_scsi_biosparam() */ | |
1381 | ||
1382 | /* This is the new scsi eh reset function */ | |
1383 | static int tw_scsi_eh_reset(struct scsi_cmnd *SCpnt) | |
1384 | { | |
1385 | TW_Device_Extension *tw_dev=NULL; | |
1386 | int retval = FAILED; | |
1387 | ||
1388 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1389 | ||
1da177e4 LT |
1390 | tw_dev->num_resets++; |
1391 | ||
017560fc JG |
1392 | sdev_printk(KERN_WARNING, SCpnt->device, |
1393 | "WARNING: Command (0x%x) timed out, resetting card.\n", | |
1394 | SCpnt->cmnd[0]); | |
1da177e4 | 1395 | |
4fe48187 | 1396 | /* Make sure we are not issuing an ioctl or resetting from ioctl */ |
1397 | mutex_lock(&tw_dev->ioctl_lock); | |
1398 | ||
1da177e4 | 1399 | /* Now reset the card and some of the device extension data */ |
4fe48187 | 1400 | if (tw_reset_device_extension(tw_dev)) { |
1da177e4 LT |
1401 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n", tw_dev->host->host_no); |
1402 | goto out; | |
1403 | } | |
1404 | ||
1405 | retval = SUCCESS; | |
1406 | out: | |
4fe48187 | 1407 | mutex_unlock(&tw_dev->ioctl_lock); |
1da177e4 LT |
1408 | return retval; |
1409 | } /* End tw_scsi_eh_reset() */ | |
1410 | ||
1411 | /* This function handles scsi inquiry commands */ | |
1412 | static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id) | |
1413 | { | |
1414 | TW_Param *param; | |
1415 | TW_Command *command_packet; | |
1416 | unsigned long command_que_value; | |
1417 | unsigned long param_value; | |
1418 | ||
1419 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n"); | |
1420 | ||
1421 | /* Initialize command packet */ | |
1422 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1423 | if (command_packet == NULL) { | |
1424 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n"); | |
1425 | return 1; | |
1426 | } | |
1427 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1428 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1429 | command_packet->size = 4; | |
1430 | command_packet->request_id = request_id; | |
1431 | command_packet->status = 0; | |
1432 | command_packet->flags = 0; | |
1433 | command_packet->byte6.parameter_count = 1; | |
1434 | ||
1435 | /* Now setup the param */ | |
1436 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1437 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n"); | |
1438 | return 1; | |
1439 | } | |
1440 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1441 | memset(param, 0, sizeof(TW_Sector)); | |
1442 | param->table_id = 3; /* unit summary table */ | |
1443 | param->parameter_id = 3; /* unitsstatus parameter */ | |
1444 | param->parameter_size_bytes = TW_MAX_UNITS; | |
1445 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1446 | if (param_value == 0) { | |
1447 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n"); | |
1448 | return 1; | |
1449 | } | |
1450 | ||
1451 | command_packet->byte8.param.sgl[0].address = param_value; | |
1452 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1453 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1454 | if (command_que_value == 0) { | |
1455 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n"); | |
1456 | return 1; | |
1457 | } | |
1458 | ||
1459 | /* Now try to post the command packet */ | |
1460 | tw_post_command_packet(tw_dev, request_id); | |
1461 | ||
1462 | return 0; | |
1463 | } /* End tw_scsiop_inquiry() */ | |
1464 | ||
c9d297c5 JB |
1465 | static void tw_transfer_internal(TW_Device_Extension *tw_dev, int request_id, |
1466 | void *data, unsigned int len) | |
1467 | { | |
1468 | struct scsi_cmnd *cmd = tw_dev->srb[request_id]; | |
e943752e | 1469 | unsigned long flags; |
c9d297c5 | 1470 | |
6edae708 | 1471 | local_irq_save(flags); |
e943752e | 1472 | scsi_sg_copy_from_buffer(cmd, data, len); |
6edae708 | 1473 | local_irq_restore(flags); |
c9d297c5 JB |
1474 | } |
1475 | ||
1da177e4 LT |
1476 | /* This function is called by the isr to complete an inquiry command */ |
1477 | static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id) | |
1478 | { | |
1479 | unsigned char *is_unit_present; | |
c9d297c5 | 1480 | unsigned char request_buffer[36]; |
1da177e4 LT |
1481 | TW_Param *param; |
1482 | ||
1483 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n"); | |
1484 | ||
c9d297c5 | 1485 | memset(request_buffer, 0, sizeof(request_buffer)); |
1da177e4 LT |
1486 | request_buffer[0] = TYPE_DISK; /* Peripheral device type */ |
1487 | request_buffer[1] = 0; /* Device type modifier */ | |
1488 | request_buffer[2] = 0; /* No ansi/iso compliance */ | |
1489 | request_buffer[4] = 31; /* Additional length */ | |
1490 | memcpy(&request_buffer[8], "3ware ", 8); /* Vendor ID */ | |
1491 | sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id); | |
1492 | memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3); | |
c9d297c5 JB |
1493 | tw_transfer_internal(tw_dev, request_id, request_buffer, |
1494 | sizeof(request_buffer)); | |
1da177e4 LT |
1495 | |
1496 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1497 | if (param == NULL) { | |
1498 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n"); | |
1499 | return 1; | |
1500 | } | |
1501 | is_unit_present = &(param->data[0]); | |
1502 | ||
1503 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { | |
1504 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; | |
1505 | } else { | |
1506 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; | |
1507 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); | |
1508 | return TW_ISR_DONT_RESULT; | |
1509 | } | |
1510 | ||
1511 | return 0; | |
1512 | } /* End tw_scsiop_inquiry_complete() */ | |
1513 | ||
1514 | /* This function handles scsi mode_sense commands */ | |
1515 | static int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id) | |
1516 | { | |
1517 | TW_Param *param; | |
1518 | TW_Command *command_packet; | |
1519 | unsigned long command_que_value; | |
1520 | unsigned long param_value; | |
1521 | ||
1522 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n"); | |
1523 | ||
1524 | /* Only page control = 0, page code = 0x8 (cache page) supported */ | |
1525 | if (tw_dev->srb[request_id]->cmnd[2] != 0x8) { | |
1526 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1527 | tw_state_request_finish(tw_dev, request_id); | |
1528 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
1529 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1530 | return 0; | |
1531 | } | |
1532 | ||
1533 | /* Now read firmware cache setting for this unit */ | |
1534 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1535 | if (command_packet == NULL) { | |
1536 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n"); | |
1537 | return 1; | |
1538 | } | |
1539 | ||
1540 | /* Setup the command packet */ | |
1541 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1542 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1543 | command_packet->size = 4; | |
1544 | command_packet->request_id = request_id; | |
1545 | command_packet->status = 0; | |
1546 | command_packet->flags = 0; | |
1547 | command_packet->byte6.parameter_count = 1; | |
1548 | ||
1549 | /* Setup the param */ | |
1550 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1551 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n"); | |
1552 | return 1; | |
1553 | } | |
1554 | ||
1555 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1556 | memset(param, 0, sizeof(TW_Sector)); | |
1557 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id; | |
1558 | param->parameter_id = 7; /* unit flags */ | |
1559 | param->parameter_size_bytes = 1; | |
1560 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1561 | if (param_value == 0) { | |
1562 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n"); | |
1563 | return 1; | |
1564 | } | |
1565 | ||
1566 | command_packet->byte8.param.sgl[0].address = param_value; | |
1567 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1568 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1569 | if (command_que_value == 0) { | |
1570 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n"); | |
1571 | return 1; | |
1572 | } | |
1573 | ||
1574 | /* Now try to post the command packet */ | |
1575 | tw_post_command_packet(tw_dev, request_id); | |
1576 | ||
1577 | return 0; | |
1578 | } /* End tw_scsiop_mode_sense() */ | |
1579 | ||
1580 | /* This function is called by the isr to complete a mode sense command */ | |
1581 | static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id) | |
1582 | { | |
1583 | TW_Param *param; | |
1584 | unsigned char *flags; | |
c9d297c5 | 1585 | unsigned char request_buffer[8]; |
1da177e4 LT |
1586 | |
1587 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n"); | |
1588 | ||
1589 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1590 | if (param == NULL) { | |
1591 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n"); | |
1592 | return 1; | |
1593 | } | |
1594 | flags = (char *)&(param->data[0]); | |
c9d297c5 | 1595 | memset(request_buffer, 0, sizeof(request_buffer)); |
1da177e4 LT |
1596 | |
1597 | request_buffer[0] = 0xf; /* mode data length */ | |
1598 | request_buffer[1] = 0; /* default medium type */ | |
1599 | request_buffer[2] = 0x10; /* dpo/fua support on */ | |
1600 | request_buffer[3] = 0; /* no block descriptors */ | |
1601 | request_buffer[4] = 0x8; /* caching page */ | |
1602 | request_buffer[5] = 0xa; /* page length */ | |
1603 | if (*flags & 0x1) | |
4fe48187 | 1604 | request_buffer[6] = 0x5; /* WCE on, RCD on */ |
1da177e4 | 1605 | else |
4fe48187 | 1606 | request_buffer[6] = 0x1; /* WCE off, RCD on */ |
c9d297c5 JB |
1607 | tw_transfer_internal(tw_dev, request_id, request_buffer, |
1608 | sizeof(request_buffer)); | |
1da177e4 LT |
1609 | |
1610 | return 0; | |
1611 | } /* End tw_scsiop_mode_sense_complete() */ | |
1612 | ||
1613 | /* This function handles scsi read_capacity commands */ | |
1614 | static int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id) | |
1615 | { | |
1616 | TW_Param *param; | |
1617 | TW_Command *command_packet; | |
1618 | unsigned long command_que_value; | |
1619 | unsigned long param_value; | |
1620 | ||
1621 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n"); | |
1622 | ||
1623 | /* Initialize command packet */ | |
1624 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1625 | ||
1626 | if (command_packet == NULL) { | |
1627 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n"); | |
1628 | return 1; | |
1629 | } | |
1630 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1631 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1632 | command_packet->size = 4; | |
1633 | command_packet->request_id = request_id; | |
1634 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); | |
1635 | command_packet->status = 0; | |
1636 | command_packet->flags = 0; | |
1637 | command_packet->byte6.block_count = 1; | |
1638 | ||
1639 | /* Now setup the param */ | |
1640 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1641 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n"); | |
1642 | return 1; | |
1643 | } | |
1644 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1645 | memset(param, 0, sizeof(TW_Sector)); | |
1646 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + | |
1647 | tw_dev->srb[request_id]->device->id; | |
1648 | param->parameter_id = 4; /* unitcapacity parameter */ | |
1649 | param->parameter_size_bytes = 4; | |
1650 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1651 | if (param_value == 0) { | |
1652 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n"); | |
1653 | return 1; | |
1654 | } | |
1655 | ||
1656 | command_packet->byte8.param.sgl[0].address = param_value; | |
1657 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1658 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1659 | if (command_que_value == 0) { | |
1660 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n"); | |
1661 | return 1; | |
1662 | } | |
1663 | ||
1664 | /* Now try to post the command to the board */ | |
1665 | tw_post_command_packet(tw_dev, request_id); | |
1666 | ||
1667 | return 0; | |
1668 | } /* End tw_scsiop_read_capacity() */ | |
1669 | ||
1670 | /* This function is called by the isr to complete a readcapacity command */ | |
1671 | static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id) | |
1672 | { | |
1673 | unsigned char *param_data; | |
1674 | u32 capacity; | |
c9d297c5 | 1675 | char buff[8]; |
1da177e4 LT |
1676 | TW_Param *param; |
1677 | ||
1678 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n"); | |
1679 | ||
c9d297c5 | 1680 | memset(buff, 0, sizeof(buff)); |
1da177e4 LT |
1681 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; |
1682 | if (param == NULL) { | |
1683 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n"); | |
1684 | return 1; | |
1685 | } | |
1686 | param_data = &(param->data[0]); | |
1687 | ||
1688 | capacity = (param_data[3] << 24) | (param_data[2] << 16) | | |
1689 | (param_data[1] << 8) | param_data[0]; | |
1690 | ||
1691 | /* Subtract one sector to fix get last sector ioctl */ | |
1692 | capacity -= 1; | |
1693 | ||
1694 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity); | |
1695 | ||
1696 | /* Number of LBA's */ | |
1697 | buff[0] = (capacity >> 24); | |
1698 | buff[1] = (capacity >> 16) & 0xff; | |
1699 | buff[2] = (capacity >> 8) & 0xff; | |
1700 | buff[3] = capacity & 0xff; | |
1701 | ||
1702 | /* Block size in bytes (512) */ | |
1703 | buff[4] = (TW_BLOCK_SIZE >> 24); | |
1704 | buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff; | |
1705 | buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff; | |
1706 | buff[7] = TW_BLOCK_SIZE & 0xff; | |
1707 | ||
c9d297c5 JB |
1708 | tw_transfer_internal(tw_dev, request_id, buff, sizeof(buff)); |
1709 | ||
1da177e4 LT |
1710 | return 0; |
1711 | } /* End tw_scsiop_read_capacity_complete() */ | |
1712 | ||
1713 | /* This function handles scsi read or write commands */ | |
1714 | static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id) | |
1715 | { | |
1716 | TW_Command *command_packet; | |
1717 | unsigned long command_que_value; | |
6edae708 | 1718 | u32 lba = 0x0, num_sectors = 0x0; |
1da177e4 LT |
1719 | int i, use_sg; |
1720 | struct scsi_cmnd *srb; | |
6edae708 | 1721 | struct scatterlist *sglist, *sg; |
1da177e4 LT |
1722 | |
1723 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n"); | |
1724 | ||
6edae708 FT |
1725 | srb = tw_dev->srb[request_id]; |
1726 | ||
1727 | sglist = scsi_sglist(srb); | |
1728 | if (!sglist) { | |
1da177e4 LT |
1729 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n"); |
1730 | return 1; | |
1731 | } | |
1da177e4 LT |
1732 | |
1733 | /* Initialize command packet */ | |
1734 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1735 | if (command_packet == NULL) { | |
1736 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n"); | |
1737 | return 1; | |
1738 | } | |
1739 | ||
1740 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) { | |
1741 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_READ); | |
1742 | } else { | |
1743 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_WRITE); | |
1744 | } | |
1745 | ||
1746 | command_packet->size = 3; | |
1747 | command_packet->request_id = request_id; | |
1748 | command_packet->unit__hostid = TW_UNITHOST_IN(0, srb->device->id); | |
1749 | command_packet->status = 0; | |
1750 | command_packet->flags = 0; | |
1751 | ||
1752 | if (srb->cmnd[0] == WRITE_10) { | |
1753 | if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10)) | |
1754 | command_packet->flags = 1; | |
1755 | } | |
1756 | ||
1757 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) { | |
1758 | lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3]; | |
1759 | num_sectors = (u32)srb->cmnd[4]; | |
1760 | } else { | |
1761 | lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5]; | |
1762 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); | |
1763 | } | |
1764 | ||
1765 | /* Update sector statistic */ | |
1766 | tw_dev->sector_count = num_sectors; | |
1767 | if (tw_dev->sector_count > tw_dev->max_sector_count) | |
1768 | tw_dev->max_sector_count = tw_dev->sector_count; | |
1769 | ||
1770 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba, num_sectors); | |
1771 | command_packet->byte8.io.lba = lba; | |
1772 | command_packet->byte6.block_count = num_sectors; | |
1773 | ||
6edae708 FT |
1774 | use_sg = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); |
1775 | if (!use_sg) | |
1776 | return 1; | |
1da177e4 | 1777 | |
6edae708 FT |
1778 | scsi_for_each_sg(tw_dev->srb[request_id], sg, use_sg, i) { |
1779 | command_packet->byte8.io.sgl[i].address = sg_dma_address(sg); | |
1780 | command_packet->byte8.io.sgl[i].length = sg_dma_len(sg); | |
1da177e4 LT |
1781 | command_packet->size+=2; |
1782 | } | |
1783 | ||
1da177e4 | 1784 | /* Update SG statistics */ |
6edae708 | 1785 | tw_dev->sgl_entries = scsi_sg_count(tw_dev->srb[request_id]); |
1da177e4 LT |
1786 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) |
1787 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | |
1788 | ||
1789 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1790 | if (command_que_value == 0) { | |
1791 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n"); | |
1792 | return 1; | |
1793 | } | |
1794 | ||
1795 | /* Now try to post the command to the board */ | |
1796 | tw_post_command_packet(tw_dev, request_id); | |
1797 | ||
1798 | return 0; | |
1799 | } /* End tw_scsiop_read_write() */ | |
1800 | ||
1801 | /* This function will handle the request sense scsi command */ | |
1802 | static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id) | |
1803 | { | |
6e3b2bbb JB |
1804 | char request_buffer[18]; |
1805 | ||
1da177e4 LT |
1806 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n"); |
1807 | ||
6e3b2bbb JB |
1808 | memset(request_buffer, 0, sizeof(request_buffer)); |
1809 | request_buffer[0] = 0x70; /* Immediate fixed format */ | |
1810 | request_buffer[7] = 10; /* minimum size per SPC: 18 bytes */ | |
1811 | /* leave all other fields zero, giving effectively NO_SENSE return */ | |
1812 | tw_transfer_internal(tw_dev, request_id, request_buffer, | |
1813 | sizeof(request_buffer)); | |
1814 | ||
1da177e4 LT |
1815 | tw_dev->state[request_id] = TW_S_COMPLETED; |
1816 | tw_state_request_finish(tw_dev, request_id); | |
1817 | ||
1818 | /* If we got a request_sense, we probably want a reset, return error */ | |
1819 | tw_dev->srb[request_id]->result = (DID_ERROR << 16); | |
1820 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1821 | ||
1822 | return 0; | |
1823 | } /* End tw_scsiop_request_sense() */ | |
1824 | ||
1825 | /* This function will handle synchronize cache scsi command */ | |
1826 | static int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id) | |
1827 | { | |
1828 | TW_Command *command_packet; | |
1829 | unsigned long command_que_value; | |
1830 | ||
1831 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n"); | |
1832 | ||
1833 | /* Send firmware flush command for this unit */ | |
1834 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1835 | if (command_packet == NULL) { | |
1836 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n"); | |
1837 | return 1; | |
1838 | } | |
1839 | ||
1840 | /* Setup the command packet */ | |
1841 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1842 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE); | |
1843 | command_packet->size = 2; | |
1844 | command_packet->request_id = request_id; | |
1845 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); | |
1846 | command_packet->status = 0; | |
1847 | command_packet->flags = 0; | |
1848 | command_packet->byte6.parameter_count = 1; | |
1849 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1850 | if (command_que_value == 0) { | |
1851 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n"); | |
1852 | return 1; | |
1853 | } | |
1854 | ||
1855 | /* Now try to post the command packet */ | |
1856 | tw_post_command_packet(tw_dev, request_id); | |
1857 | ||
1858 | return 0; | |
1859 | } /* End tw_scsiop_synchronize_cache() */ | |
1860 | ||
1861 | /* This function will handle test unit ready scsi command */ | |
1862 | static int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id) | |
1863 | { | |
1864 | TW_Param *param; | |
1865 | TW_Command *command_packet; | |
1866 | unsigned long command_que_value; | |
1867 | unsigned long param_value; | |
1868 | ||
1869 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n"); | |
1870 | ||
1871 | /* Initialize command packet */ | |
1872 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1873 | if (command_packet == NULL) { | |
1874 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n"); | |
1875 | return 1; | |
1876 | } | |
1877 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1878 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1879 | command_packet->size = 4; | |
1880 | command_packet->request_id = request_id; | |
1881 | command_packet->status = 0; | |
1882 | command_packet->flags = 0; | |
1883 | command_packet->byte6.parameter_count = 1; | |
1884 | ||
1885 | /* Now setup the param */ | |
1886 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1887 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n"); | |
1888 | return 1; | |
1889 | } | |
1890 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1891 | memset(param, 0, sizeof(TW_Sector)); | |
1892 | param->table_id = 3; /* unit summary table */ | |
1893 | param->parameter_id = 3; /* unitsstatus parameter */ | |
1894 | param->parameter_size_bytes = TW_MAX_UNITS; | |
1895 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1896 | if (param_value == 0) { | |
1897 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n"); | |
1898 | return 1; | |
1899 | } | |
1900 | ||
1901 | command_packet->byte8.param.sgl[0].address = param_value; | |
1902 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1903 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1904 | if (command_que_value == 0) { | |
1905 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n"); | |
1906 | return 1; | |
1907 | } | |
1908 | ||
1909 | /* Now try to post the command packet */ | |
1910 | tw_post_command_packet(tw_dev, request_id); | |
1911 | ||
1912 | return 0; | |
1913 | } /* End tw_scsiop_test_unit_ready() */ | |
1914 | ||
1915 | /* This function is called by the isr to complete a testunitready command */ | |
1916 | static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id) | |
1917 | { | |
1918 | unsigned char *is_unit_present; | |
1919 | TW_Param *param; | |
1920 | ||
1921 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n"); | |
1922 | ||
1923 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1924 | if (param == NULL) { | |
1925 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n"); | |
1926 | return 1; | |
1927 | } | |
1928 | is_unit_present = &(param->data[0]); | |
1929 | ||
1930 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { | |
1931 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; | |
1932 | } else { | |
1933 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; | |
1934 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); | |
1935 | return TW_ISR_DONT_RESULT; | |
1936 | } | |
1937 | ||
1938 | return 0; | |
1939 | } /* End tw_scsiop_test_unit_ready_complete() */ | |
1940 | ||
1941 | /* This is the main scsi queue function to handle scsi opcodes */ | |
1942 | static int tw_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) | |
1943 | { | |
1944 | unsigned char *command = SCpnt->cmnd; | |
1945 | int request_id = 0; | |
1946 | int retval = 1; | |
1947 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1948 | ||
4fe48187 | 1949 | /* If we are resetting due to timed out ioctl, report as busy */ |
1950 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) | |
1951 | return SCSI_MLQUEUE_HOST_BUSY; | |
1952 | ||
1da177e4 LT |
1953 | /* Save done function into Scsi_Cmnd struct */ |
1954 | SCpnt->scsi_done = done; | |
1955 | ||
1956 | /* Queue the command and get a request id */ | |
1957 | tw_state_request_start(tw_dev, &request_id); | |
1958 | ||
1959 | /* Save the scsi command for use by the ISR */ | |
1960 | tw_dev->srb[request_id] = SCpnt; | |
1961 | ||
1962 | /* Initialize phase to zero */ | |
1963 | SCpnt->SCp.phase = TW_PHASE_INITIAL; | |
1964 | ||
1965 | switch (*command) { | |
1966 | case READ_10: | |
1967 | case READ_6: | |
1968 | case WRITE_10: | |
1969 | case WRITE_6: | |
1970 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n"); | |
1971 | retval = tw_scsiop_read_write(tw_dev, request_id); | |
1972 | break; | |
1973 | case TEST_UNIT_READY: | |
1974 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n"); | |
1975 | retval = tw_scsiop_test_unit_ready(tw_dev, request_id); | |
1976 | break; | |
1977 | case INQUIRY: | |
1978 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n"); | |
1979 | retval = tw_scsiop_inquiry(tw_dev, request_id); | |
1980 | break; | |
1981 | case READ_CAPACITY: | |
1982 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n"); | |
1983 | retval = tw_scsiop_read_capacity(tw_dev, request_id); | |
1984 | break; | |
1985 | case REQUEST_SENSE: | |
1986 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n"); | |
1987 | retval = tw_scsiop_request_sense(tw_dev, request_id); | |
1988 | break; | |
1989 | case MODE_SENSE: | |
1990 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n"); | |
1991 | retval = tw_scsiop_mode_sense(tw_dev, request_id); | |
1992 | break; | |
1993 | case SYNCHRONIZE_CACHE: | |
1994 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n"); | |
1995 | retval = tw_scsiop_synchronize_cache(tw_dev, request_id); | |
1996 | break; | |
1997 | case TW_IOCTL: | |
1998 | printk(KERN_WARNING "3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n"); | |
1999 | break; | |
2000 | default: | |
2001 | printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev->host->host_no, *command); | |
2002 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2003 | tw_state_request_finish(tw_dev, request_id); | |
2004 | SCpnt->result = (DID_BAD_TARGET << 16); | |
2005 | done(SCpnt); | |
2006 | retval = 0; | |
2007 | } | |
2008 | if (retval) { | |
2009 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2010 | tw_state_request_finish(tw_dev, request_id); | |
2011 | SCpnt->result = (DID_ERROR << 16); | |
2012 | done(SCpnt); | |
2013 | retval = 0; | |
2014 | } | |
2015 | return retval; | |
2016 | } /* End tw_scsi_queue() */ | |
2017 | ||
2018 | /* This function is the interrupt service routine */ | |
7d12e780 | 2019 | static irqreturn_t tw_interrupt(int irq, void *dev_instance) |
1da177e4 LT |
2020 | { |
2021 | int request_id; | |
2022 | u32 status_reg_value; | |
2023 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; | |
2024 | TW_Response_Queue response_que; | |
2025 | int error = 0, retval = 0; | |
2026 | TW_Command *command_packet; | |
2027 | int handled = 0; | |
2028 | ||
2029 | /* Get the host lock for io completions */ | |
2030 | spin_lock(tw_dev->host->host_lock); | |
2031 | ||
2032 | /* Read the registers */ | |
2033 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
2034 | ||
2035 | /* Check if this is our interrupt, otherwise bail */ | |
2036 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) | |
2037 | goto tw_interrupt_bail; | |
2038 | ||
2039 | handled = 1; | |
2040 | ||
4fe48187 | 2041 | /* If we are resetting, bail */ |
2042 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) | |
2043 | goto tw_interrupt_bail; | |
2044 | ||
1da177e4 LT |
2045 | /* Check controller for errors */ |
2046 | if (tw_check_bits(status_reg_value)) { | |
2047 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); | |
2048 | if (tw_decode_bits(tw_dev, status_reg_value, 1)) { | |
2049 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
2050 | goto tw_interrupt_bail; | |
2051 | } | |
2052 | } | |
2053 | ||
2054 | /* Handle host interrupt */ | |
2055 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) { | |
2056 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n"); | |
2057 | TW_CLEAR_HOST_INTERRUPT(tw_dev); | |
2058 | } | |
2059 | ||
2060 | /* Handle attention interrupt */ | |
2061 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { | |
2062 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n"); | |
2063 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
2064 | tw_state_request_start(tw_dev, &request_id); | |
2065 | error = tw_aen_read_queue(tw_dev, request_id); | |
2066 | if (error) { | |
2067 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no); | |
2068 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2069 | tw_state_request_finish(tw_dev, request_id); | |
2070 | } | |
2071 | } | |
2072 | ||
2073 | /* Handle command interrupt */ | |
2074 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { | |
2075 | /* Drain as many pending commands as we can */ | |
2076 | while (tw_dev->pending_request_count > 0) { | |
2077 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; | |
2078 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
2079 | printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no); | |
2080 | break; | |
2081 | } | |
2082 | if (tw_post_command_packet(tw_dev, request_id)==0) { | |
2083 | if (tw_dev->pending_head == TW_Q_LENGTH-1) { | |
2084 | tw_dev->pending_head = TW_Q_START; | |
2085 | } else { | |
2086 | tw_dev->pending_head = tw_dev->pending_head + 1; | |
2087 | } | |
2088 | tw_dev->pending_request_count--; | |
2089 | } else { | |
2090 | /* If we get here, we will continue re-posting on the next command interrupt */ | |
2091 | break; | |
2092 | } | |
2093 | } | |
2094 | /* If there are no more pending requests, we mask command interrupt */ | |
2095 | if (tw_dev->pending_request_count == 0) | |
2096 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
2097 | } | |
2098 | ||
2099 | /* Handle response interrupt */ | |
2100 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { | |
2101 | /* Drain the response queue from the board */ | |
2102 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
2103 | /* Read response queue register */ | |
2104 | response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
2105 | request_id = TW_RESID_OUT(response_que.response_id); | |
2106 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
2107 | error = 0; | |
2108 | ||
2109 | /* Check for bad response */ | |
2110 | if (command_packet->status != 0) { | |
2111 | /* If internal command, don't error, don't fill sense */ | |
2112 | if (tw_dev->srb[request_id] == NULL) { | |
2113 | tw_decode_sense(tw_dev, request_id, 0); | |
2114 | } else { | |
2115 | error = tw_decode_sense(tw_dev, request_id, 1); | |
2116 | } | |
2117 | } | |
2118 | ||
2119 | /* Check for correct state */ | |
2120 | if (tw_dev->state[request_id] != TW_S_POSTED) { | |
2121 | if (tw_dev->srb[request_id] != NULL) { | |
2122 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no); | |
2123 | error = 1; | |
2124 | } | |
2125 | } | |
2126 | ||
2127 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id); | |
2128 | ||
2129 | /* Check for internal command completion */ | |
2130 | if (tw_dev->srb[request_id] == NULL) { | |
2131 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n"); | |
2132 | /* Check for chrdev ioctl completion */ | |
2133 | if (request_id != tw_dev->chrdev_request_id) { | |
2134 | retval = tw_aen_complete(tw_dev, request_id); | |
2135 | if (retval) { | |
2136 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no); | |
2137 | } | |
2138 | } else { | |
2139 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
2140 | wake_up(&tw_dev->ioctl_wqueue); | |
2141 | } | |
2142 | } else { | |
2143 | switch (tw_dev->srb[request_id]->cmnd[0]) { | |
2144 | case READ_10: | |
2145 | case READ_6: | |
2146 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n"); | |
2147 | break; | |
2148 | case WRITE_10: | |
2149 | case WRITE_6: | |
2150 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n"); | |
2151 | break; | |
2152 | case TEST_UNIT_READY: | |
2153 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n"); | |
2154 | error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id); | |
2155 | break; | |
2156 | case INQUIRY: | |
2157 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n"); | |
2158 | error = tw_scsiop_inquiry_complete(tw_dev, request_id); | |
2159 | break; | |
2160 | case READ_CAPACITY: | |
2161 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n"); | |
2162 | error = tw_scsiop_read_capacity_complete(tw_dev, request_id); | |
2163 | break; | |
2164 | case MODE_SENSE: | |
2165 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n"); | |
2166 | error = tw_scsiop_mode_sense_complete(tw_dev, request_id); | |
2167 | break; | |
2168 | case SYNCHRONIZE_CACHE: | |
2169 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n"); | |
2170 | break; | |
2171 | default: | |
2172 | printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n"); | |
2173 | error = 1; | |
2174 | } | |
2175 | ||
2176 | /* If no error command was a success */ | |
2177 | if (error == 0) { | |
2178 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
2179 | } | |
2180 | ||
2181 | /* If error, command failed */ | |
2182 | if (error == 1) { | |
2183 | /* Ask for a host reset */ | |
2184 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); | |
2185 | } | |
2186 | ||
2187 | /* Now complete the io */ | |
2188 | if ((error != TW_ISR_DONT_COMPLETE)) { | |
2189 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2190 | tw_state_request_finish(tw_dev, request_id); | |
2191 | tw_dev->posted_request_count--; | |
2192 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
2193 | ||
2194 | tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); | |
2195 | } | |
2196 | } | |
2197 | ||
2198 | /* Check for valid status after each drain */ | |
2199 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
2200 | if (tw_check_bits(status_reg_value)) { | |
2201 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); | |
2202 | if (tw_decode_bits(tw_dev, status_reg_value, 1)) { | |
2203 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
2204 | goto tw_interrupt_bail; | |
2205 | } | |
2206 | } | |
2207 | } | |
2208 | } | |
2209 | ||
2210 | tw_interrupt_bail: | |
2211 | spin_unlock(tw_dev->host->host_lock); | |
2212 | return IRQ_RETVAL(handled); | |
2213 | } /* End tw_interrupt() */ | |
2214 | ||
2215 | /* This function tells the controller to shut down */ | |
2216 | static void __tw_shutdown(TW_Device_Extension *tw_dev) | |
2217 | { | |
2218 | /* Disable interrupts */ | |
2219 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2220 | ||
4fe48187 | 2221 | /* Free up the IRQ */ |
2222 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
2223 | ||
1da177e4 LT |
2224 | printk(KERN_WARNING "3w-xxxx: Shutting down host %d.\n", tw_dev->host->host_no); |
2225 | ||
2226 | /* Tell the card we are shutting down */ | |
2227 | if (tw_initconnection(tw_dev, 1)) { | |
2228 | printk(KERN_WARNING "3w-xxxx: Connection shutdown failed.\n"); | |
2229 | } else { | |
2230 | printk(KERN_WARNING "3w-xxxx: Shutdown complete.\n"); | |
2231 | } | |
2232 | ||
2233 | /* Clear all interrupts just before exit */ | |
2234 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2235 | } /* End __tw_shutdown() */ | |
2236 | ||
2237 | /* Wrapper for __tw_shutdown */ | |
d18c3db5 | 2238 | static void tw_shutdown(struct pci_dev *pdev) |
1da177e4 | 2239 | { |
d18c3db5 | 2240 | struct Scsi_Host *host = pci_get_drvdata(pdev); |
1da177e4 LT |
2241 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; |
2242 | ||
2243 | __tw_shutdown(tw_dev); | |
2244 | } /* End tw_shutdown() */ | |
2245 | ||
2246 | static struct scsi_host_template driver_template = { | |
2247 | .module = THIS_MODULE, | |
2248 | .name = "3ware Storage Controller", | |
2249 | .queuecommand = tw_scsi_queue, | |
2250 | .eh_host_reset_handler = tw_scsi_eh_reset, | |
2251 | .bios_param = tw_scsi_biosparam, | |
2252 | .change_queue_depth = tw_change_queue_depth, | |
2253 | .can_queue = TW_Q_LENGTH-2, | |
2254 | .this_id = -1, | |
2255 | .sg_tablesize = TW_MAX_SGL_LENGTH, | |
2256 | .max_sectors = TW_MAX_SECTORS, | |
2257 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | |
2258 | .use_clustering = ENABLE_CLUSTERING, | |
2259 | .shost_attrs = tw_host_attrs, | |
2260 | .emulated = 1 | |
2261 | }; | |
2262 | ||
2263 | /* This function will probe and initialize a card */ | |
2264 | static int __devinit tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) | |
2265 | { | |
2266 | struct Scsi_Host *host = NULL; | |
2267 | TW_Device_Extension *tw_dev; | |
2268 | int retval = -ENODEV; | |
2269 | ||
2270 | retval = pci_enable_device(pdev); | |
2271 | if (retval) { | |
2272 | printk(KERN_WARNING "3w-xxxx: Failed to enable pci device."); | |
2273 | goto out_disable_device; | |
2274 | } | |
2275 | ||
2276 | pci_set_master(pdev); | |
2277 | ||
2278 | retval = pci_set_dma_mask(pdev, TW_DMA_MASK); | |
2279 | if (retval) { | |
2280 | printk(KERN_WARNING "3w-xxxx: Failed to set dma mask."); | |
2281 | goto out_disable_device; | |
2282 | } | |
2283 | ||
2284 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | |
2285 | if (!host) { | |
2286 | printk(KERN_WARNING "3w-xxxx: Failed to allocate memory for device extension."); | |
2287 | retval = -ENOMEM; | |
2288 | goto out_disable_device; | |
2289 | } | |
2290 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
2291 | ||
1da177e4 LT |
2292 | /* Save values to device extension */ |
2293 | tw_dev->host = host; | |
2294 | tw_dev->tw_pci_dev = pdev; | |
2295 | ||
2296 | if (tw_initialize_device_extension(tw_dev)) { | |
2297 | printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension."); | |
2298 | goto out_free_device_extension; | |
2299 | } | |
2300 | ||
2301 | /* Request IO regions */ | |
2302 | retval = pci_request_regions(pdev, "3w-xxxx"); | |
2303 | if (retval) { | |
2304 | printk(KERN_WARNING "3w-xxxx: Failed to get mem region."); | |
2305 | goto out_free_device_extension; | |
2306 | } | |
2307 | ||
2308 | /* Save base address */ | |
2309 | tw_dev->base_addr = pci_resource_start(pdev, 0); | |
2310 | if (!tw_dev->base_addr) { | |
2311 | printk(KERN_WARNING "3w-xxxx: Failed to get io address."); | |
2312 | goto out_release_mem_region; | |
2313 | } | |
2314 | ||
2315 | /* Disable interrupts on the card */ | |
2316 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2317 | ||
2318 | /* Initialize the card */ | |
2319 | if (tw_reset_sequence(tw_dev)) | |
2320 | goto out_release_mem_region; | |
2321 | ||
2322 | /* Set host specific parameters */ | |
2323 | host->max_id = TW_MAX_UNITS; | |
2324 | host->max_cmd_len = TW_MAX_CDB_LEN; | |
2325 | ||
2326 | /* Luns and channels aren't supported by adapter */ | |
2327 | host->max_lun = 0; | |
2328 | host->max_channel = 0; | |
2329 | ||
2330 | /* Register the card with the kernel SCSI layer */ | |
2331 | retval = scsi_add_host(host, &pdev->dev); | |
2332 | if (retval) { | |
2333 | printk(KERN_WARNING "3w-xxxx: scsi add host failed"); | |
2334 | goto out_release_mem_region; | |
2335 | } | |
2336 | ||
2337 | pci_set_drvdata(pdev, host); | |
2338 | ||
2339 | 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); | |
2340 | ||
2341 | /* Now setup the interrupt handler */ | |
1d6f359a | 2342 | retval = request_irq(pdev->irq, tw_interrupt, IRQF_SHARED, "3w-xxxx", tw_dev); |
1da177e4 LT |
2343 | if (retval) { |
2344 | printk(KERN_WARNING "3w-xxxx: Error requesting IRQ."); | |
2345 | goto out_remove_host; | |
2346 | } | |
2347 | ||
2348 | tw_device_extension_list[tw_device_extension_count] = tw_dev; | |
2349 | tw_device_extension_count++; | |
2350 | ||
2351 | /* Re-enable interrupts on the card */ | |
2352 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2353 | ||
2354 | /* Finally, scan the host */ | |
2355 | scsi_scan_host(host); | |
2356 | ||
2357 | if (twe_major == -1) { | |
2358 | if ((twe_major = register_chrdev (0, "twe", &tw_fops)) < 0) | |
2359 | printk(KERN_WARNING "3w-xxxx: Failed to register character device."); | |
2360 | } | |
2361 | return 0; | |
2362 | ||
2363 | out_remove_host: | |
2364 | scsi_remove_host(host); | |
2365 | out_release_mem_region: | |
2366 | pci_release_regions(pdev); | |
2367 | out_free_device_extension: | |
2368 | tw_free_device_extension(tw_dev); | |
2369 | scsi_host_put(host); | |
2370 | out_disable_device: | |
2371 | pci_disable_device(pdev); | |
2372 | ||
2373 | return retval; | |
2374 | } /* End tw_probe() */ | |
2375 | ||
2376 | /* This function is called to remove a device */ | |
2377 | static void tw_remove(struct pci_dev *pdev) | |
2378 | { | |
2379 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2380 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2381 | ||
2382 | scsi_remove_host(tw_dev->host); | |
2383 | ||
2384 | /* Unregister character device */ | |
2385 | if (twe_major >= 0) { | |
2386 | unregister_chrdev(twe_major, "twe"); | |
2387 | twe_major = -1; | |
2388 | } | |
2389 | ||
1da177e4 LT |
2390 | /* Shutdown the card */ |
2391 | __tw_shutdown(tw_dev); | |
2392 | ||
2393 | /* Free up the mem region */ | |
2394 | pci_release_regions(pdev); | |
2395 | ||
2396 | /* Free up device extension resources */ | |
2397 | tw_free_device_extension(tw_dev); | |
2398 | ||
2399 | scsi_host_put(tw_dev->host); | |
2400 | pci_disable_device(pdev); | |
2401 | tw_device_extension_count--; | |
2402 | } /* End tw_remove() */ | |
2403 | ||
2404 | /* PCI Devices supported by this driver */ | |
2405 | static struct pci_device_id tw_pci_tbl[] __devinitdata = { | |
2406 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_1000, | |
2407 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
2408 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_7000, | |
2409 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
2410 | { } | |
2411 | }; | |
2412 | MODULE_DEVICE_TABLE(pci, tw_pci_tbl); | |
2413 | ||
2414 | /* pci_driver initializer */ | |
2415 | static struct pci_driver tw_driver = { | |
2416 | .name = "3w-xxxx", | |
2417 | .id_table = tw_pci_tbl, | |
2418 | .probe = tw_probe, | |
2419 | .remove = tw_remove, | |
d18c3db5 | 2420 | .shutdown = tw_shutdown, |
1da177e4 LT |
2421 | }; |
2422 | ||
2423 | /* This function is called on driver initialization */ | |
2424 | static int __init tw_init(void) | |
2425 | { | |
2426 | printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | |
2427 | ||
dcbccbde | 2428 | return pci_register_driver(&tw_driver); |
1da177e4 LT |
2429 | } /* End tw_init() */ |
2430 | ||
2431 | /* This function is called on driver exit */ | |
2432 | static void __exit tw_exit(void) | |
2433 | { | |
2434 | pci_unregister_driver(&tw_driver); | |
2435 | } /* End tw_exit() */ | |
2436 | ||
2437 | module_init(tw_init); | |
2438 | module_exit(tw_exit); | |
2439 |