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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 | ||
9 | Copyright (C) 1999-2005 3ware Inc. | |
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. | |
194 | */ | |
195 | ||
196 | #include <linux/module.h> | |
197 | #include <linux/reboot.h> | |
198 | #include <linux/spinlock.h> | |
199 | #include <linux/interrupt.h> | |
200 | #include <linux/moduleparam.h> | |
201 | #include <linux/errno.h> | |
202 | #include <linux/types.h> | |
203 | #include <linux/delay.h> | |
204 | #include <linux/pci.h> | |
205 | #include <linux/time.h> | |
206 | #include <asm/io.h> | |
207 | #include <asm/irq.h> | |
208 | #include <asm/uaccess.h> | |
209 | #include <scsi/scsi.h> | |
210 | #include <scsi/scsi_host.h> | |
211 | #include <scsi/scsi_tcq.h> | |
212 | #include <scsi/scsi_cmnd.h> | |
213 | #include "3w-xxxx.h" | |
214 | ||
215 | /* Globals */ | |
216 | #define TW_DRIVER_VERSION "1.26.02.001" | |
217 | static TW_Device_Extension *tw_device_extension_list[TW_MAX_SLOT]; | |
218 | static int tw_device_extension_count = 0; | |
219 | static int twe_major = -1; | |
220 | ||
221 | /* Module parameters */ | |
222 | MODULE_AUTHOR("AMCC"); | |
223 | MODULE_DESCRIPTION("3ware Storage Controller Linux Driver"); | |
224 | MODULE_LICENSE("GPL"); | |
225 | MODULE_VERSION(TW_DRIVER_VERSION); | |
226 | ||
227 | /* Function prototypes */ | |
228 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset); | |
229 | ||
230 | /* Functions */ | |
231 | ||
232 | /* This function will check the status register for unexpected bits */ | |
233 | static int tw_check_bits(u32 status_reg_value) | |
234 | { | |
235 | if ((status_reg_value & TW_STATUS_EXPECTED_BITS) != TW_STATUS_EXPECTED_BITS) { | |
236 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): No expected bits (0x%x).\n", status_reg_value); | |
237 | return 1; | |
238 | } | |
239 | if ((status_reg_value & TW_STATUS_UNEXPECTED_BITS) != 0) { | |
240 | dprintk(KERN_WARNING "3w-xxxx: tw_check_bits(): Found unexpected bits (0x%x).\n", status_reg_value); | |
241 | return 1; | |
242 | } | |
243 | ||
244 | return 0; | |
245 | } /* End tw_check_bits() */ | |
246 | ||
247 | /* This function will print readable messages from status register errors */ | |
248 | static int tw_decode_bits(TW_Device_Extension *tw_dev, u32 status_reg_value, int print_host) | |
249 | { | |
250 | char host[16]; | |
251 | ||
252 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_bits()\n"); | |
253 | ||
254 | if (print_host) | |
255 | sprintf(host, " scsi%d:", tw_dev->host->host_no); | |
256 | else | |
257 | host[0] = '\0'; | |
258 | ||
259 | if (status_reg_value & TW_STATUS_PCI_PARITY_ERROR) { | |
260 | printk(KERN_WARNING "3w-xxxx:%s PCI Parity Error: clearing.\n", host); | |
261 | outl(TW_CONTROL_CLEAR_PARITY_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
262 | } | |
263 | ||
264 | if (status_reg_value & TW_STATUS_PCI_ABORT) { | |
265 | printk(KERN_WARNING "3w-xxxx:%s PCI Abort: clearing.\n", host); | |
266 | outl(TW_CONTROL_CLEAR_PCI_ABORT, TW_CONTROL_REG_ADDR(tw_dev)); | |
267 | pci_write_config_word(tw_dev->tw_pci_dev, PCI_STATUS, TW_PCI_CLEAR_PCI_ABORT); | |
268 | } | |
269 | ||
270 | if (status_reg_value & TW_STATUS_QUEUE_ERROR) { | |
271 | printk(KERN_WARNING "3w-xxxx:%s Controller Queue Error: clearing.\n", host); | |
272 | outl(TW_CONTROL_CLEAR_QUEUE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
273 | } | |
274 | ||
275 | if (status_reg_value & TW_STATUS_SBUF_WRITE_ERROR) { | |
276 | printk(KERN_WARNING "3w-xxxx:%s SBUF Write Error: clearing.\n", host); | |
277 | outl(TW_CONTROL_CLEAR_SBUF_WRITE_ERROR, TW_CONTROL_REG_ADDR(tw_dev)); | |
278 | } | |
279 | ||
280 | if (status_reg_value & TW_STATUS_MICROCONTROLLER_ERROR) { | |
281 | if (tw_dev->reset_print == 0) { | |
282 | printk(KERN_WARNING "3w-xxxx:%s Microcontroller Error: clearing.\n", host); | |
283 | tw_dev->reset_print = 1; | |
284 | } | |
285 | return 1; | |
286 | } | |
287 | ||
288 | return 0; | |
289 | } /* End tw_decode_bits() */ | |
290 | ||
291 | /* This function will poll the status register for a flag */ | |
292 | static int tw_poll_status(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
293 | { | |
294 | u32 status_reg_value; | |
295 | unsigned long before; | |
296 | int retval = 1; | |
297 | ||
298 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
299 | before = jiffies; | |
300 | ||
301 | if (tw_check_bits(status_reg_value)) | |
302 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
303 | ||
304 | while ((status_reg_value & flag) != flag) { | |
305 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
306 | ||
307 | if (tw_check_bits(status_reg_value)) | |
308 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
309 | ||
310 | if (time_after(jiffies, before + HZ * seconds)) | |
311 | goto out; | |
312 | ||
313 | msleep(50); | |
314 | } | |
315 | retval = 0; | |
316 | out: | |
317 | return retval; | |
318 | } /* End tw_poll_status() */ | |
319 | ||
320 | /* This function will poll the status register for disappearance of a flag */ | |
321 | static int tw_poll_status_gone(TW_Device_Extension *tw_dev, u32 flag, int seconds) | |
322 | { | |
323 | u32 status_reg_value; | |
324 | unsigned long before; | |
325 | int retval = 1; | |
326 | ||
327 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
328 | before = jiffies; | |
329 | ||
330 | if (tw_check_bits(status_reg_value)) | |
331 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
332 | ||
333 | while ((status_reg_value & flag) != 0) { | |
334 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
335 | ||
336 | if (tw_check_bits(status_reg_value)) | |
337 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
338 | ||
339 | if (time_after(jiffies, before + HZ * seconds)) | |
340 | goto out; | |
341 | ||
342 | msleep(50); | |
343 | } | |
344 | retval = 0; | |
345 | out: | |
346 | return retval; | |
347 | } /* End tw_poll_status_gone() */ | |
348 | ||
349 | /* This function will attempt to post a command packet to the board */ | |
350 | static int tw_post_command_packet(TW_Device_Extension *tw_dev, int request_id) | |
351 | { | |
352 | u32 status_reg_value; | |
353 | unsigned long command_que_value; | |
354 | ||
355 | dprintk(KERN_NOTICE "3w-xxxx: tw_post_command_packet()\n"); | |
356 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
357 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
358 | ||
359 | if (tw_check_bits(status_reg_value)) { | |
360 | dprintk(KERN_WARNING "3w-xxxx: tw_post_command_packet(): Unexpected bits.\n"); | |
361 | tw_decode_bits(tw_dev, status_reg_value, 1); | |
362 | } | |
363 | ||
364 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { | |
365 | /* We successfully posted the command packet */ | |
366 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
367 | tw_dev->state[request_id] = TW_S_POSTED; | |
368 | tw_dev->posted_request_count++; | |
369 | if (tw_dev->posted_request_count > tw_dev->max_posted_request_count) { | |
370 | tw_dev->max_posted_request_count = tw_dev->posted_request_count; | |
371 | } | |
372 | } else { | |
373 | /* Couldn't post the command packet, so we do it in the isr */ | |
374 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
375 | tw_dev->state[request_id] = TW_S_PENDING; | |
376 | tw_dev->pending_request_count++; | |
377 | if (tw_dev->pending_request_count > tw_dev->max_pending_request_count) { | |
378 | tw_dev->max_pending_request_count = tw_dev->pending_request_count; | |
379 | } | |
380 | tw_dev->pending_queue[tw_dev->pending_tail] = request_id; | |
381 | if (tw_dev->pending_tail == TW_Q_LENGTH-1) { | |
382 | tw_dev->pending_tail = TW_Q_START; | |
383 | } else { | |
384 | tw_dev->pending_tail = tw_dev->pending_tail + 1; | |
385 | } | |
386 | } | |
387 | TW_UNMASK_COMMAND_INTERRUPT(tw_dev); | |
388 | return 1; | |
389 | } | |
390 | return 0; | |
391 | } /* End tw_post_command_packet() */ | |
392 | ||
393 | /* This function will return valid sense buffer information for failed cmds */ | |
394 | static int tw_decode_sense(TW_Device_Extension *tw_dev, int request_id, int fill_sense) | |
395 | { | |
396 | int i; | |
397 | TW_Command *command; | |
398 | ||
399 | dprintk(KERN_WARNING "3w-xxxx: tw_decode_sense()\n"); | |
400 | command = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
401 | ||
402 | 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)); | |
403 | ||
404 | /* Attempt to return intelligent sense information */ | |
405 | if (fill_sense) { | |
406 | if ((command->status == 0xc7) || (command->status == 0xcb)) { | |
407 | for (i=0;i<(sizeof(tw_sense_table)/sizeof(tw_sense_table[0]));i++) { | |
408 | if (command->flags == tw_sense_table[i][0]) { | |
409 | ||
410 | /* Valid bit and 'current errors' */ | |
411 | tw_dev->srb[request_id]->sense_buffer[0] = (0x1 << 7 | 0x70); | |
412 | ||
413 | /* Sense key */ | |
414 | tw_dev->srb[request_id]->sense_buffer[2] = tw_sense_table[i][1]; | |
415 | ||
416 | /* Additional sense length */ | |
417 | tw_dev->srb[request_id]->sense_buffer[7] = 0xa; /* 10 bytes */ | |
418 | ||
419 | /* Additional sense code */ | |
420 | tw_dev->srb[request_id]->sense_buffer[12] = tw_sense_table[i][2]; | |
421 | ||
422 | /* Additional sense code qualifier */ | |
423 | tw_dev->srb[request_id]->sense_buffer[13] = tw_sense_table[i][3]; | |
424 | ||
425 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); | |
426 | return TW_ISR_DONT_RESULT; /* Special case for isr to not over-write result */ | |
427 | } | |
428 | } | |
429 | } | |
430 | ||
431 | /* If no table match, error so we get a reset */ | |
432 | return 1; | |
433 | } | |
434 | ||
435 | return 0; | |
436 | } /* End tw_decode_sense() */ | |
437 | ||
438 | /* This function will report controller error status */ | |
439 | static int tw_check_errors(TW_Device_Extension *tw_dev) | |
440 | { | |
441 | u32 status_reg_value; | |
442 | ||
443 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
444 | ||
445 | if (TW_STATUS_ERRORS(status_reg_value) || tw_check_bits(status_reg_value)) { | |
446 | tw_decode_bits(tw_dev, status_reg_value, 0); | |
447 | return 1; | |
448 | } | |
449 | ||
450 | return 0; | |
451 | } /* End tw_check_errors() */ | |
452 | ||
453 | /* This function will empty the response que */ | |
454 | static void tw_empty_response_que(TW_Device_Extension *tw_dev) | |
455 | { | |
456 | u32 status_reg_value, response_que_value; | |
457 | ||
458 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
459 | ||
460 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
461 | response_que_value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
462 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
463 | } | |
464 | } /* End tw_empty_response_que() */ | |
465 | ||
466 | /* This function will free a request_id */ | |
467 | static void tw_state_request_finish(TW_Device_Extension *tw_dev, int request_id) | |
468 | { | |
469 | tw_dev->free_queue[tw_dev->free_tail] = request_id; | |
470 | tw_dev->state[request_id] = TW_S_FINISHED; | |
471 | tw_dev->free_tail = (tw_dev->free_tail + 1) % TW_Q_LENGTH; | |
472 | } /* End tw_state_request_finish() */ | |
473 | ||
474 | /* This function will assign an available request_id */ | |
475 | static void tw_state_request_start(TW_Device_Extension *tw_dev, int *request_id) | |
476 | { | |
477 | *request_id = tw_dev->free_queue[tw_dev->free_head]; | |
478 | tw_dev->free_head = (tw_dev->free_head + 1) % TW_Q_LENGTH; | |
479 | tw_dev->state[*request_id] = TW_S_STARTED; | |
480 | } /* End tw_state_request_start() */ | |
481 | ||
482 | /* Show some statistics about the card */ | |
483 | static ssize_t tw_show_stats(struct class_device *class_dev, char *buf) | |
484 | { | |
485 | struct Scsi_Host *host = class_to_shost(class_dev); | |
486 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
487 | unsigned long flags = 0; | |
488 | ssize_t len; | |
489 | ||
490 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
491 | len = snprintf(buf, PAGE_SIZE, "3w-xxxx Driver version: %s\n" | |
492 | "Current commands posted: %4d\n" | |
493 | "Max commands posted: %4d\n" | |
494 | "Current pending commands: %4d\n" | |
495 | "Max pending commands: %4d\n" | |
496 | "Last sgl length: %4d\n" | |
497 | "Max sgl length: %4d\n" | |
498 | "Last sector count: %4d\n" | |
499 | "Max sector count: %4d\n" | |
500 | "SCSI Host Resets: %4d\n" | |
501 | "AEN's: %4d\n", | |
502 | TW_DRIVER_VERSION, | |
503 | tw_dev->posted_request_count, | |
504 | tw_dev->max_posted_request_count, | |
505 | tw_dev->pending_request_count, | |
506 | tw_dev->max_pending_request_count, | |
507 | tw_dev->sgl_entries, | |
508 | tw_dev->max_sgl_entries, | |
509 | tw_dev->sector_count, | |
510 | tw_dev->max_sector_count, | |
511 | tw_dev->num_resets, | |
512 | tw_dev->aen_count); | |
513 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
514 | return len; | |
515 | } /* End tw_show_stats() */ | |
516 | ||
517 | /* This function will set a devices queue depth */ | |
518 | static int tw_change_queue_depth(struct scsi_device *sdev, int queue_depth) | |
519 | { | |
520 | if (queue_depth > TW_Q_LENGTH-2) | |
521 | queue_depth = TW_Q_LENGTH-2; | |
522 | scsi_adjust_queue_depth(sdev, MSG_ORDERED_TAG, queue_depth); | |
523 | return queue_depth; | |
524 | } /* End tw_change_queue_depth() */ | |
525 | ||
526 | /* Create sysfs 'stats' entry */ | |
527 | static struct class_device_attribute tw_host_stats_attr = { | |
528 | .attr = { | |
529 | .name = "stats", | |
530 | .mode = S_IRUGO, | |
531 | }, | |
532 | .show = tw_show_stats | |
533 | }; | |
534 | ||
535 | /* Host attributes initializer */ | |
536 | static struct class_device_attribute *tw_host_attrs[] = { | |
537 | &tw_host_stats_attr, | |
538 | NULL, | |
539 | }; | |
540 | ||
541 | /* This function will read the aen queue from the isr */ | |
542 | static int tw_aen_read_queue(TW_Device_Extension *tw_dev, int request_id) | |
543 | { | |
544 | TW_Command *command_packet; | |
545 | TW_Param *param; | |
546 | unsigned long command_que_value; | |
547 | u32 status_reg_value; | |
548 | unsigned long param_value = 0; | |
549 | ||
550 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_read_queue()\n"); | |
551 | ||
552 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
553 | if (tw_check_bits(status_reg_value)) { | |
554 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Unexpected bits.\n"); | |
555 | tw_decode_bits(tw_dev, status_reg_value, 1); | |
556 | return 1; | |
557 | } | |
558 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
559 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet virtual address.\n"); | |
560 | return 1; | |
561 | } | |
562 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
563 | memset(command_packet, 0, sizeof(TW_Sector)); | |
564 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
565 | command_packet->size = 4; | |
566 | command_packet->request_id = request_id; | |
567 | command_packet->status = 0; | |
568 | command_packet->flags = 0; | |
569 | command_packet->byte6.parameter_count = 1; | |
570 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
571 | if (command_que_value == 0) { | |
572 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad command packet physical address.\n"); | |
573 | return 1; | |
574 | } | |
575 | /* Now setup the param */ | |
576 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
577 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment virtual address.\n"); | |
578 | return 1; | |
579 | } | |
580 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
581 | memset(param, 0, sizeof(TW_Sector)); | |
582 | param->table_id = 0x401; /* AEN table */ | |
583 | param->parameter_id = 2; /* Unit code */ | |
584 | param->parameter_size_bytes = 2; | |
585 | param_value = tw_dev->alignment_physical_address[request_id]; | |
586 | if (param_value == 0) { | |
587 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Bad alignment physical address.\n"); | |
588 | return 1; | |
589 | } | |
590 | command_packet->byte8.param.sgl[0].address = param_value; | |
591 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
592 | ||
593 | /* Now post the command packet */ | |
594 | if ((status_reg_value & TW_STATUS_COMMAND_QUEUE_FULL) == 0) { | |
595 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post succeeded.\n"); | |
596 | tw_dev->srb[request_id] = NULL; /* Flag internal command */ | |
597 | tw_dev->state[request_id] = TW_S_POSTED; | |
598 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
599 | } else { | |
600 | printk(KERN_WARNING "3w-xxxx: tw_aen_read_queue(): Post failed, will retry.\n"); | |
601 | return 1; | |
602 | } | |
603 | ||
604 | return 0; | |
605 | } /* End tw_aen_read_queue() */ | |
606 | ||
607 | /* This function will complete an aen request from the isr */ | |
608 | static int tw_aen_complete(TW_Device_Extension *tw_dev, int request_id) | |
609 | { | |
610 | TW_Param *param; | |
611 | unsigned short aen; | |
612 | int error = 0, table_max = 0; | |
613 | ||
614 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_complete()\n"); | |
615 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
616 | printk(KERN_WARNING "3w-xxxx: tw_aen_complete(): Bad alignment virtual address.\n"); | |
617 | return 1; | |
618 | } | |
619 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
620 | aen = *(unsigned short *)(param->data); | |
621 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_complete(): Queue'd code 0x%x\n", aen); | |
622 | ||
623 | /* Print some useful info when certain aen codes come out */ | |
624 | if (aen == 0x0ff) { | |
625 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: INFO: AEN queue overflow.\n", tw_dev->host->host_no); | |
626 | } else { | |
627 | table_max = sizeof(tw_aen_string)/sizeof(char *); | |
628 | if ((aen & 0x0ff) < table_max) { | |
629 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { | |
630 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s%d.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff], aen >> 8); | |
631 | } else { | |
632 | if (aen != 0x0) | |
633 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN: %s.\n", tw_dev->host->host_no, tw_aen_string[aen & 0xff]); | |
634 | } | |
635 | } else { | |
636 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received AEN %d.\n", tw_dev->host->host_no, aen); | |
637 | } | |
638 | } | |
639 | if (aen != TW_AEN_QUEUE_EMPTY) { | |
640 | tw_dev->aen_count++; | |
641 | ||
642 | /* Now queue the code */ | |
643 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; | |
644 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { | |
645 | tw_dev->aen_tail = TW_Q_START; | |
646 | } else { | |
647 | tw_dev->aen_tail = tw_dev->aen_tail + 1; | |
648 | } | |
649 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
650 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
651 | tw_dev->aen_head = TW_Q_START; | |
652 | } else { | |
653 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
654 | } | |
655 | } | |
656 | ||
657 | error = tw_aen_read_queue(tw_dev, request_id); | |
658 | if (error) { | |
659 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing AEN.\n", tw_dev->host->host_no); | |
660 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
661 | tw_state_request_finish(tw_dev, request_id); | |
662 | } | |
663 | } else { | |
664 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
665 | tw_state_request_finish(tw_dev, request_id); | |
666 | } | |
667 | ||
668 | return 0; | |
669 | } /* End tw_aen_complete() */ | |
670 | ||
671 | /* This function will drain the aen queue after a soft reset */ | |
672 | static int tw_aen_drain_queue(TW_Device_Extension *tw_dev) | |
673 | { | |
674 | TW_Command *command_packet; | |
675 | TW_Param *param; | |
676 | int request_id = 0; | |
677 | unsigned long command_que_value; | |
678 | unsigned long param_value; | |
679 | TW_Response_Queue response_queue; | |
680 | unsigned short aen; | |
681 | unsigned short aen_code; | |
682 | int finished = 0; | |
683 | int first_reset = 0; | |
684 | int queue = 0; | |
685 | int found = 0, table_max = 0; | |
686 | ||
687 | dprintk(KERN_NOTICE "3w-xxxx: tw_aen_drain_queue()\n"); | |
688 | ||
689 | if (tw_poll_status(tw_dev, TW_STATUS_ATTENTION_INTERRUPT | TW_STATUS_MICROCONTROLLER_READY, 30)) { | |
690 | dprintk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): No attention interrupt for card %d.\n", tw_device_extension_count); | |
691 | return 1; | |
692 | } | |
693 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
694 | ||
695 | /* Empty response queue */ | |
696 | tw_empty_response_que(tw_dev); | |
697 | ||
698 | /* Initialize command packet */ | |
699 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
700 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet virtual address.\n"); | |
701 | return 1; | |
702 | } | |
703 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
704 | memset(command_packet, 0, sizeof(TW_Sector)); | |
705 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
706 | command_packet->size = 4; | |
707 | command_packet->request_id = request_id; | |
708 | command_packet->status = 0; | |
709 | command_packet->flags = 0; | |
710 | command_packet->byte6.parameter_count = 1; | |
711 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
712 | if (command_que_value == 0) { | |
713 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad command packet physical address.\n"); | |
714 | return 1; | |
715 | } | |
716 | ||
717 | /* Now setup the param */ | |
718 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
719 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment virtual address.\n"); | |
720 | return 1; | |
721 | } | |
722 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
723 | memset(param, 0, sizeof(TW_Sector)); | |
724 | param->table_id = 0x401; /* AEN table */ | |
725 | param->parameter_id = 2; /* Unit code */ | |
726 | param->parameter_size_bytes = 2; | |
727 | param_value = tw_dev->alignment_physical_address[request_id]; | |
728 | if (param_value == 0) { | |
729 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Bad alignment physical address.\n"); | |
730 | return 1; | |
731 | } | |
732 | command_packet->byte8.param.sgl[0].address = param_value; | |
733 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
734 | ||
735 | /* Now drain the controller's aen queue */ | |
736 | do { | |
737 | /* Post command packet */ | |
738 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
739 | ||
740 | /* Now poll for completion */ | |
741 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
742 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
743 | request_id = TW_RESID_OUT(response_queue.response_id); | |
744 | ||
745 | if (request_id != 0) { | |
746 | /* Unexpected request id */ | |
747 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Unexpected request id.\n"); | |
748 | return 1; | |
749 | } | |
750 | ||
751 | if (command_packet->status != 0) { | |
752 | if (command_packet->flags != TW_AEN_TABLE_UNDEFINED) { | |
753 | /* Bad response */ | |
754 | tw_decode_sense(tw_dev, request_id, 0); | |
755 | return 1; | |
756 | } else { | |
757 | /* We know this is a 3w-1x00, and doesn't support aen's */ | |
758 | return 0; | |
759 | } | |
760 | } | |
761 | ||
762 | /* Now check the aen */ | |
763 | aen = *(unsigned short *)(param->data); | |
764 | aen_code = (aen & 0x0ff); | |
765 | queue = 0; | |
766 | switch (aen_code) { | |
767 | case TW_AEN_QUEUE_EMPTY: | |
768 | dprintk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
769 | if (first_reset != 1) { | |
770 | return 1; | |
771 | } else { | |
772 | finished = 1; | |
773 | } | |
774 | break; | |
775 | case TW_AEN_SOFT_RESET: | |
776 | if (first_reset == 0) { | |
777 | first_reset = 1; | |
778 | } else { | |
779 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
780 | tw_dev->aen_count++; | |
781 | queue = 1; | |
782 | } | |
783 | break; | |
784 | default: | |
785 | if (aen == 0x0ff) { | |
786 | printk(KERN_WARNING "3w-xxxx: AEN: INFO: AEN queue overflow.\n"); | |
787 | } else { | |
788 | table_max = sizeof(tw_aen_string)/sizeof(char *); | |
789 | if ((aen & 0x0ff) < table_max) { | |
790 | if ((tw_aen_string[aen & 0xff][strlen(tw_aen_string[aen & 0xff])-1]) == '#') { | |
791 | printk(KERN_WARNING "3w-xxxx: AEN: %s%d.\n", tw_aen_string[aen & 0xff], aen >> 8); | |
792 | } else { | |
793 | printk(KERN_WARNING "3w-xxxx: AEN: %s.\n", tw_aen_string[aen & 0xff]); | |
794 | } | |
795 | } else | |
796 | printk(KERN_WARNING "3w-xxxx: Received AEN %d.\n", aen); | |
797 | } | |
798 | tw_dev->aen_count++; | |
799 | queue = 1; | |
800 | } | |
801 | ||
802 | /* Now put the aen on the aen_queue */ | |
803 | if (queue == 1) { | |
804 | tw_dev->aen_queue[tw_dev->aen_tail] = aen; | |
805 | if (tw_dev->aen_tail == TW_Q_LENGTH - 1) { | |
806 | tw_dev->aen_tail = TW_Q_START; | |
807 | } else { | |
808 | tw_dev->aen_tail = tw_dev->aen_tail + 1; | |
809 | } | |
810 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
811 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
812 | tw_dev->aen_head = TW_Q_START; | |
813 | } else { | |
814 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
815 | } | |
816 | } | |
817 | } | |
818 | found = 1; | |
819 | } | |
820 | if (found == 0) { | |
821 | printk(KERN_WARNING "3w-xxxx: tw_aen_drain_queue(): Response never received.\n"); | |
822 | return 1; | |
823 | } | |
824 | } while (finished == 0); | |
825 | ||
826 | return 0; | |
827 | } /* End tw_aen_drain_queue() */ | |
828 | ||
829 | /* This function will allocate memory */ | |
830 | static int tw_allocate_memory(TW_Device_Extension *tw_dev, int size, int which) | |
831 | { | |
832 | int i; | |
833 | dma_addr_t dma_handle; | |
834 | unsigned long *cpu_addr = NULL; | |
835 | ||
836 | dprintk(KERN_NOTICE "3w-xxxx: tw_allocate_memory()\n"); | |
837 | ||
838 | cpu_addr = pci_alloc_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, &dma_handle); | |
839 | if (cpu_addr == NULL) { | |
840 | printk(KERN_WARNING "3w-xxxx: pci_alloc_consistent() failed.\n"); | |
841 | return 1; | |
842 | } | |
843 | ||
844 | if ((unsigned long)cpu_addr % (tw_dev->tw_pci_dev->device == TW_DEVICE_ID ? TW_ALIGNMENT_6000 : TW_ALIGNMENT_7000)) { | |
845 | printk(KERN_WARNING "3w-xxxx: Couldn't allocate correctly aligned memory.\n"); | |
846 | pci_free_consistent(tw_dev->tw_pci_dev, size*TW_Q_LENGTH, cpu_addr, dma_handle); | |
847 | return 1; | |
848 | } | |
849 | ||
850 | memset(cpu_addr, 0, size*TW_Q_LENGTH); | |
851 | ||
852 | for (i=0;i<TW_Q_LENGTH;i++) { | |
853 | switch(which) { | |
854 | case 0: | |
855 | tw_dev->command_packet_physical_address[i] = dma_handle+(i*size); | |
856 | tw_dev->command_packet_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
857 | break; | |
858 | case 1: | |
859 | tw_dev->alignment_physical_address[i] = dma_handle+(i*size); | |
860 | tw_dev->alignment_virtual_address[i] = (unsigned long *)((unsigned char *)cpu_addr + (i*size)); | |
861 | break; | |
862 | default: | |
863 | printk(KERN_WARNING "3w-xxxx: tw_allocate_memory(): case slip in tw_allocate_memory()\n"); | |
864 | return 1; | |
865 | } | |
866 | } | |
867 | ||
868 | return 0; | |
869 | } /* End tw_allocate_memory() */ | |
870 | ||
871 | /* This function handles ioctl for the character device */ | |
872 | static int tw_chrdev_ioctl(struct inode *inode, struct file *file, unsigned int cmd, unsigned long arg) | |
873 | { | |
874 | int request_id; | |
875 | dma_addr_t dma_handle; | |
876 | unsigned short tw_aen_code; | |
877 | unsigned long flags; | |
878 | unsigned int data_buffer_length = 0; | |
879 | unsigned long data_buffer_length_adjusted = 0; | |
880 | unsigned long *cpu_addr; | |
881 | long timeout; | |
882 | TW_New_Ioctl *tw_ioctl; | |
883 | TW_Passthru *passthru; | |
884 | TW_Device_Extension *tw_dev = tw_device_extension_list[iminor(inode)]; | |
885 | int retval = -EFAULT; | |
886 | void __user *argp = (void __user *)arg; | |
887 | ||
888 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl()\n"); | |
889 | ||
890 | /* Only let one of these through at a time */ | |
891 | if (down_interruptible(&tw_dev->ioctl_sem)) | |
892 | return -EINTR; | |
893 | ||
894 | /* First copy down the buffer length */ | |
895 | if (copy_from_user(&data_buffer_length, argp, sizeof(unsigned int))) | |
896 | goto out; | |
897 | ||
898 | /* Check size */ | |
899 | if (data_buffer_length > TW_MAX_IOCTL_SECTORS * 512) { | |
900 | retval = -EINVAL; | |
901 | goto out; | |
902 | } | |
903 | ||
904 | /* Hardware can only do multiple of 512 byte transfers */ | |
905 | data_buffer_length_adjusted = (data_buffer_length + 511) & ~511; | |
906 | ||
907 | /* Now allocate ioctl buf memory */ | |
908 | cpu_addr = dma_alloc_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, &dma_handle, GFP_KERNEL); | |
909 | if (cpu_addr == NULL) { | |
910 | retval = -ENOMEM; | |
911 | goto out; | |
912 | } | |
913 | ||
914 | tw_ioctl = (TW_New_Ioctl *)cpu_addr; | |
915 | ||
916 | /* Now copy down the entire ioctl */ | |
917 | if (copy_from_user(tw_ioctl, argp, data_buffer_length + sizeof(TW_New_Ioctl) - 1)) | |
918 | goto out2; | |
919 | ||
920 | passthru = (TW_Passthru *)&tw_ioctl->firmware_command; | |
921 | ||
922 | /* See which ioctl we are doing */ | |
923 | switch (cmd) { | |
924 | case TW_OP_NOP: | |
925 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_OP_NOP.\n"); | |
926 | break; | |
927 | case TW_OP_AEN_LISTEN: | |
928 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_AEN_LISTEN.\n"); | |
929 | memset(tw_ioctl->data_buffer, 0, data_buffer_length); | |
930 | ||
931 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
932 | if (tw_dev->aen_head == tw_dev->aen_tail) { | |
933 | tw_aen_code = TW_AEN_QUEUE_EMPTY; | |
934 | } else { | |
935 | tw_aen_code = tw_dev->aen_queue[tw_dev->aen_head]; | |
936 | if (tw_dev->aen_head == TW_Q_LENGTH - 1) { | |
937 | tw_dev->aen_head = TW_Q_START; | |
938 | } else { | |
939 | tw_dev->aen_head = tw_dev->aen_head + 1; | |
940 | } | |
941 | } | |
942 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
943 | memcpy(tw_ioctl->data_buffer, &tw_aen_code, sizeof(tw_aen_code)); | |
944 | break; | |
945 | case TW_CMD_PACKET_WITH_DATA: | |
946 | dprintk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): caught TW_CMD_PACKET_WITH_DATA.\n"); | |
947 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
948 | ||
949 | tw_state_request_start(tw_dev, &request_id); | |
950 | ||
951 | /* Flag internal command */ | |
952 | tw_dev->srb[request_id] = NULL; | |
953 | ||
954 | /* Flag chrdev ioctl */ | |
955 | tw_dev->chrdev_request_id = request_id; | |
956 | ||
957 | tw_ioctl->firmware_command.request_id = request_id; | |
958 | ||
959 | /* Load the sg list */ | |
960 | switch (TW_SGL_OUT(tw_ioctl->firmware_command.opcode__sgloffset)) { | |
961 | case 2: | |
962 | tw_ioctl->firmware_command.byte8.param.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
963 | tw_ioctl->firmware_command.byte8.param.sgl[0].length = data_buffer_length_adjusted; | |
964 | break; | |
965 | case 3: | |
966 | tw_ioctl->firmware_command.byte8.io.sgl[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
967 | tw_ioctl->firmware_command.byte8.io.sgl[0].length = data_buffer_length_adjusted; | |
968 | break; | |
969 | case 5: | |
970 | passthru->sg_list[0].address = dma_handle + sizeof(TW_New_Ioctl) - 1; | |
971 | passthru->sg_list[0].length = data_buffer_length_adjusted; | |
972 | break; | |
973 | } | |
974 | ||
975 | memcpy(tw_dev->command_packet_virtual_address[request_id], &(tw_ioctl->firmware_command), sizeof(TW_Command)); | |
976 | ||
977 | /* Now post the command packet to the controller */ | |
978 | tw_post_command_packet(tw_dev, request_id); | |
979 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
980 | ||
981 | timeout = TW_IOCTL_CHRDEV_TIMEOUT*HZ; | |
982 | ||
983 | /* Now wait for the command to complete */ | |
984 | timeout = wait_event_timeout(tw_dev->ioctl_wqueue, tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE, timeout); | |
985 | ||
986 | /* See if we reset while waiting for the ioctl to complete */ | |
987 | if (test_bit(TW_IN_RESET, &tw_dev->flags)) { | |
988 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
989 | retval = -ERESTARTSYS; | |
990 | goto out2; | |
991 | } | |
992 | ||
993 | /* We timed out, and didn't get an interrupt */ | |
994 | if (tw_dev->chrdev_request_id != TW_IOCTL_CHRDEV_FREE) { | |
995 | /* Now we need to reset the board */ | |
996 | printk(KERN_WARNING "3w-xxxx: scsi%d: Character ioctl (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, cmd); | |
997 | retval = -EIO; | |
998 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
999 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1000 | tw_state_request_finish(tw_dev, request_id); | |
1001 | tw_dev->posted_request_count--; | |
1002 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1003 | if (tw_reset_device_extension(tw_dev, 1)) { | |
1004 | printk(KERN_WARNING "3w-xxxx: tw_chrdev_ioctl(): Reset failed for card %d.\n", tw_dev->host->host_no); | |
1005 | } | |
1006 | goto out2; | |
1007 | } | |
1008 | ||
1009 | /* Now copy in the command packet response */ | |
1010 | memcpy(&(tw_ioctl->firmware_command), tw_dev->command_packet_virtual_address[request_id], sizeof(TW_Command)); | |
1011 | ||
1012 | /* Now complete the io */ | |
1013 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1014 | tw_dev->posted_request_count--; | |
1015 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1016 | tw_state_request_finish(tw_dev, request_id); | |
1017 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1018 | break; | |
1019 | default: | |
1020 | retval = -ENOTTY; | |
1021 | goto out2; | |
1022 | } | |
1023 | ||
1024 | /* Now copy the response to userspace */ | |
1025 | if (copy_to_user(argp, tw_ioctl, sizeof(TW_New_Ioctl) + data_buffer_length - 1)) | |
1026 | goto out2; | |
1027 | retval = 0; | |
1028 | out2: | |
1029 | /* Now free ioctl buf memory */ | |
1030 | dma_free_coherent(&tw_dev->tw_pci_dev->dev, data_buffer_length_adjusted+sizeof(TW_New_Ioctl) - 1, cpu_addr, dma_handle); | |
1031 | out: | |
1032 | up(&tw_dev->ioctl_sem); | |
1033 | return retval; | |
1034 | } /* End tw_chrdev_ioctl() */ | |
1035 | ||
1036 | /* This function handles open for the character device */ | |
1037 | static int tw_chrdev_open(struct inode *inode, struct file *file) | |
1038 | { | |
1039 | unsigned int minor_number; | |
1040 | ||
1041 | dprintk(KERN_WARNING "3w-xxxx: tw_ioctl_open()\n"); | |
1042 | ||
1043 | minor_number = iminor(inode); | |
1044 | if (minor_number >= tw_device_extension_count) | |
1045 | return -ENODEV; | |
1046 | ||
1047 | return 0; | |
1048 | } /* End tw_chrdev_open() */ | |
1049 | ||
1050 | /* File operations struct for character device */ | |
1051 | static struct file_operations tw_fops = { | |
1052 | .owner = THIS_MODULE, | |
1053 | .ioctl = tw_chrdev_ioctl, | |
1054 | .open = tw_chrdev_open, | |
1055 | .release = NULL | |
1056 | }; | |
1057 | ||
1058 | /* This function will free up device extension resources */ | |
1059 | static void tw_free_device_extension(TW_Device_Extension *tw_dev) | |
1060 | { | |
1061 | dprintk(KERN_NOTICE "3w-xxxx: tw_free_device_extension()\n"); | |
1062 | ||
1063 | /* Free command packet and generic buffer memory */ | |
1064 | if (tw_dev->command_packet_virtual_address[0]) | |
1065 | 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]); | |
1066 | ||
1067 | if (tw_dev->alignment_virtual_address[0]) | |
1068 | 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]); | |
1069 | } /* End tw_free_device_extension() */ | |
1070 | ||
1071 | /* This function will send an initconnection command to controller */ | |
1072 | static int tw_initconnection(TW_Device_Extension *tw_dev, int message_credits) | |
1073 | { | |
1074 | unsigned long command_que_value; | |
1075 | TW_Command *command_packet; | |
1076 | TW_Response_Queue response_queue; | |
1077 | int request_id = 0; | |
1078 | ||
1079 | dprintk(KERN_NOTICE "3w-xxxx: tw_initconnection()\n"); | |
1080 | ||
1081 | /* Initialize InitConnection command packet */ | |
1082 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
1083 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet virtual address.\n"); | |
1084 | return 1; | |
1085 | } | |
1086 | ||
1087 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1088 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1089 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_INIT_CONNECTION); | |
1090 | command_packet->size = TW_INIT_COMMAND_PACKET_SIZE; | |
1091 | command_packet->request_id = request_id; | |
1092 | command_packet->status = 0x0; | |
1093 | command_packet->flags = 0x0; | |
1094 | command_packet->byte6.message_credits = message_credits; | |
1095 | command_packet->byte8.init_connection.response_queue_pointer = 0x0; | |
1096 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1097 | ||
1098 | if (command_que_value == 0) { | |
1099 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Bad command packet physical address.\n"); | |
1100 | return 1; | |
1101 | } | |
1102 | ||
1103 | /* Send command packet to the board */ | |
1104 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1105 | ||
1106 | /* Poll for completion */ | |
1107 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
1108 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1109 | request_id = TW_RESID_OUT(response_queue.response_id); | |
1110 | ||
1111 | if (request_id != 0) { | |
1112 | /* unexpected request id */ | |
1113 | printk(KERN_WARNING "3w-xxxx: tw_initconnection(): Unexpected request id.\n"); | |
1114 | return 1; | |
1115 | } | |
1116 | if (command_packet->status != 0) { | |
1117 | /* bad response */ | |
1118 | tw_decode_sense(tw_dev, request_id, 0); | |
1119 | return 1; | |
1120 | } | |
1121 | } | |
1122 | return 0; | |
1123 | } /* End tw_initconnection() */ | |
1124 | ||
1125 | /* Set a value in the features table */ | |
1126 | static int tw_setfeature(TW_Device_Extension *tw_dev, int parm, int param_size, | |
1127 | unsigned char *val) | |
1128 | { | |
1129 | TW_Param *param; | |
1130 | TW_Command *command_packet; | |
1131 | TW_Response_Queue response_queue; | |
1132 | int request_id = 0; | |
1133 | unsigned long command_que_value; | |
1134 | unsigned long param_value; | |
1135 | ||
1136 | /* Initialize SetParam command packet */ | |
1137 | if (tw_dev->command_packet_virtual_address[request_id] == NULL) { | |
1138 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet virtual address.\n"); | |
1139 | return 1; | |
1140 | } | |
1141 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1142 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1143 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1144 | ||
1145 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_SET_PARAM); | |
1146 | param->table_id = 0x404; /* Features table */ | |
1147 | param->parameter_id = parm; | |
1148 | param->parameter_size_bytes = param_size; | |
1149 | memcpy(param->data, val, param_size); | |
1150 | ||
1151 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1152 | if (param_value == 0) { | |
1153 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad alignment physical address.\n"); | |
1154 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1155 | tw_state_request_finish(tw_dev, request_id); | |
1156 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
1157 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1158 | } | |
1159 | command_packet->byte8.param.sgl[0].address = param_value; | |
1160 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1161 | ||
1162 | command_packet->size = 4; | |
1163 | command_packet->request_id = request_id; | |
1164 | command_packet->byte6.parameter_count = 1; | |
1165 | ||
1166 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1167 | if (command_que_value == 0) { | |
1168 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Bad command packet physical address.\n"); | |
1169 | return 1; | |
1170 | } | |
1171 | ||
1172 | /* Send command packet to the board */ | |
1173 | outl(command_que_value, TW_COMMAND_QUEUE_REG_ADDR(tw_dev)); | |
1174 | ||
1175 | /* Poll for completion */ | |
1176 | if (tw_poll_status_gone(tw_dev, TW_STATUS_RESPONSE_QUEUE_EMPTY, 30) == 0) { | |
1177 | response_queue.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
1178 | request_id = TW_RESID_OUT(response_queue.response_id); | |
1179 | ||
1180 | if (request_id != 0) { | |
1181 | /* unexpected request id */ | |
1182 | printk(KERN_WARNING "3w-xxxx: tw_setfeature(): Unexpected request id.\n"); | |
1183 | return 1; | |
1184 | } | |
1185 | if (command_packet->status != 0) { | |
1186 | /* bad response */ | |
1187 | tw_decode_sense(tw_dev, request_id, 0); | |
1188 | return 1; | |
1189 | } | |
1190 | } | |
1191 | ||
1192 | return 0; | |
1193 | } /* End tw_setfeature() */ | |
1194 | ||
1195 | /* This function will reset a controller */ | |
1196 | static int tw_reset_sequence(TW_Device_Extension *tw_dev) | |
1197 | { | |
1198 | int error = 0; | |
1199 | int tries = 0; | |
1200 | unsigned char c = 1; | |
1201 | ||
1202 | /* Reset the board */ | |
1203 | while (tries < TW_MAX_RESET_TRIES) { | |
1204 | TW_SOFT_RESET(tw_dev); | |
1205 | ||
1206 | error = tw_aen_drain_queue(tw_dev); | |
1207 | if (error) { | |
1208 | printk(KERN_WARNING "3w-xxxx: scsi%d: AEN drain failed, retrying.\n", tw_dev->host->host_no); | |
1209 | tries++; | |
1210 | continue; | |
1211 | } | |
1212 | ||
1213 | /* Check for controller errors */ | |
1214 | if (tw_check_errors(tw_dev)) { | |
1215 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors found, retrying.\n", tw_dev->host->host_no); | |
1216 | tries++; | |
1217 | continue; | |
1218 | } | |
1219 | ||
1220 | /* Now the controller is in a good state */ | |
1221 | break; | |
1222 | } | |
1223 | ||
1224 | if (tries >= TW_MAX_RESET_TRIES) { | |
1225 | printk(KERN_WARNING "3w-xxxx: scsi%d: Controller errors, card not responding, check all cabling.\n", tw_dev->host->host_no); | |
1226 | return 1; | |
1227 | } | |
1228 | ||
1229 | error = tw_initconnection(tw_dev, TW_INIT_MESSAGE_CREDITS); | |
1230 | if (error) { | |
1231 | printk(KERN_WARNING "3w-xxxx: scsi%d: Connection initialization failed.\n", tw_dev->host->host_no); | |
1232 | return 1; | |
1233 | } | |
1234 | ||
1235 | error = tw_setfeature(tw_dev, 2, 1, &c); | |
1236 | if (error) { | |
1237 | printk(KERN_WARNING "3w-xxxx: Unable to set features for card, probable old firmware or card.\n"); | |
1238 | } | |
1239 | ||
1240 | return 0; | |
1241 | } /* End tw_reset_sequence() */ | |
1242 | ||
1243 | /* This function will initialize the fields of a device extension */ | |
1244 | static int tw_initialize_device_extension(TW_Device_Extension *tw_dev) | |
1245 | { | |
1246 | int i, error=0; | |
1247 | ||
1248 | dprintk(KERN_NOTICE "3w-xxxx: tw_initialize_device_extension()\n"); | |
1249 | ||
1250 | /* Initialize command packet buffers */ | |
1251 | error = tw_allocate_memory(tw_dev, sizeof(TW_Command), 0); | |
1252 | if (error) { | |
1253 | printk(KERN_WARNING "3w-xxxx: Command packet memory allocation failed.\n"); | |
1254 | return 1; | |
1255 | } | |
1256 | ||
1257 | /* Initialize generic buffer */ | |
1258 | error = tw_allocate_memory(tw_dev, sizeof(TW_Sector), 1); | |
1259 | if (error) { | |
1260 | printk(KERN_WARNING "3w-xxxx: Generic memory allocation failed.\n"); | |
1261 | return 1; | |
1262 | } | |
1263 | ||
1264 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1265 | tw_dev->free_queue[i] = i; | |
1266 | tw_dev->state[i] = TW_S_INITIAL; | |
1267 | } | |
1268 | ||
1269 | tw_dev->pending_head = TW_Q_START; | |
1270 | tw_dev->pending_tail = TW_Q_START; | |
1271 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1272 | ||
1273 | init_MUTEX(&tw_dev->ioctl_sem); | |
1274 | init_waitqueue_head(&tw_dev->ioctl_wqueue); | |
1275 | ||
1276 | return 0; | |
1277 | } /* End tw_initialize_device_extension() */ | |
1278 | ||
1279 | static int tw_map_scsi_sg_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
1280 | { | |
1281 | int use_sg; | |
1282 | ||
1283 | dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data()\n"); | |
1284 | ||
1285 | if (cmd->use_sg == 0) | |
1286 | return 0; | |
1287 | ||
1288 | use_sg = pci_map_sg(pdev, cmd->buffer, cmd->use_sg, DMA_BIDIRECTIONAL); | |
1289 | ||
1290 | if (use_sg == 0) { | |
1291 | printk(KERN_WARNING "3w-xxxx: tw_map_scsi_sg_data(): pci_map_sg() failed.\n"); | |
1292 | return 0; | |
1293 | } | |
1294 | ||
1295 | cmd->SCp.phase = TW_PHASE_SGLIST; | |
1296 | cmd->SCp.have_data_in = use_sg; | |
1297 | ||
1298 | return use_sg; | |
1299 | } /* End tw_map_scsi_sg_data() */ | |
1300 | ||
1301 | static u32 tw_map_scsi_single_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
1302 | { | |
1303 | dma_addr_t mapping; | |
1304 | ||
1305 | dprintk(KERN_WARNING "3w-xxxx: tw_map_scsi_single_data()\n"); | |
1306 | ||
1307 | if (cmd->request_bufflen == 0) | |
1308 | return 0; | |
1309 | ||
1310 | mapping = pci_map_page(pdev, virt_to_page(cmd->request_buffer), offset_in_page(cmd->request_buffer), cmd->request_bufflen, DMA_BIDIRECTIONAL); | |
1311 | ||
1312 | if (mapping == 0) { | |
1313 | printk(KERN_WARNING "3w-xxxx: tw_map_scsi_single_data(): pci_map_page() failed.\n"); | |
1314 | return 0; | |
1315 | } | |
1316 | ||
1317 | cmd->SCp.phase = TW_PHASE_SINGLE; | |
1318 | cmd->SCp.have_data_in = mapping; | |
1319 | ||
1320 | return mapping; | |
1321 | } /* End tw_map_scsi_single_data() */ | |
1322 | ||
1323 | static void tw_unmap_scsi_data(struct pci_dev *pdev, struct scsi_cmnd *cmd) | |
1324 | { | |
1325 | dprintk(KERN_WARNING "3w-xxxx: tw_unmap_scsi_data()\n"); | |
1326 | ||
1327 | switch(cmd->SCp.phase) { | |
1328 | case TW_PHASE_SINGLE: | |
1329 | pci_unmap_page(pdev, cmd->SCp.have_data_in, cmd->request_bufflen, DMA_BIDIRECTIONAL); | |
1330 | break; | |
1331 | case TW_PHASE_SGLIST: | |
1332 | pci_unmap_sg(pdev, cmd->request_buffer, cmd->use_sg, DMA_BIDIRECTIONAL); | |
1333 | break; | |
1334 | } | |
1335 | } /* End tw_unmap_scsi_data() */ | |
1336 | ||
1337 | /* This function will reset a device extension */ | |
1338 | static int tw_reset_device_extension(TW_Device_Extension *tw_dev, int ioctl_reset) | |
1339 | { | |
1340 | int i = 0; | |
1341 | struct scsi_cmnd *srb; | |
1342 | unsigned long flags = 0; | |
1343 | ||
1344 | dprintk(KERN_NOTICE "3w-xxxx: tw_reset_device_extension()\n"); | |
1345 | ||
1346 | set_bit(TW_IN_RESET, &tw_dev->flags); | |
1347 | TW_DISABLE_INTERRUPTS(tw_dev); | |
1348 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
1349 | spin_lock_irqsave(tw_dev->host->host_lock, flags); | |
1350 | ||
1351 | /* Abort all requests that are in progress */ | |
1352 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1353 | if ((tw_dev->state[i] != TW_S_FINISHED) && | |
1354 | (tw_dev->state[i] != TW_S_INITIAL) && | |
1355 | (tw_dev->state[i] != TW_S_COMPLETED)) { | |
1356 | srb = tw_dev->srb[i]; | |
1357 | if (srb != NULL) { | |
1358 | srb->result = (DID_RESET << 16); | |
1359 | tw_dev->srb[i]->scsi_done(tw_dev->srb[i]); | |
1360 | tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[i]); | |
1361 | } | |
1362 | } | |
1363 | } | |
1364 | ||
1365 | /* Reset queues and counts */ | |
1366 | for (i=0;i<TW_Q_LENGTH;i++) { | |
1367 | tw_dev->free_queue[i] = i; | |
1368 | tw_dev->state[i] = TW_S_INITIAL; | |
1369 | } | |
1370 | tw_dev->free_head = TW_Q_START; | |
1371 | tw_dev->free_tail = TW_Q_START; | |
1372 | tw_dev->posted_request_count = 0; | |
1373 | tw_dev->pending_request_count = 0; | |
1374 | tw_dev->pending_head = TW_Q_START; | |
1375 | tw_dev->pending_tail = TW_Q_START; | |
1376 | tw_dev->reset_print = 0; | |
1377 | ||
1378 | spin_unlock_irqrestore(tw_dev->host->host_lock, flags); | |
1379 | ||
1380 | if (tw_reset_sequence(tw_dev)) { | |
1381 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset sequence failed.\n", tw_dev->host->host_no); | |
1382 | return 1; | |
1383 | } | |
1384 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
1385 | ||
1386 | /* Wake up any ioctl that was pending before the reset */ | |
1387 | if ((tw_dev->chrdev_request_id == TW_IOCTL_CHRDEV_FREE) || (ioctl_reset)) { | |
1388 | clear_bit(TW_IN_RESET, &tw_dev->flags); | |
1389 | } else { | |
1390 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
1391 | wake_up(&tw_dev->ioctl_wqueue); | |
1392 | } | |
1393 | ||
1394 | return 0; | |
1395 | } /* End tw_reset_device_extension() */ | |
1396 | ||
1397 | /* This funciton returns unit geometry in cylinders/heads/sectors */ | |
1398 | static int tw_scsi_biosparam(struct scsi_device *sdev, struct block_device *bdev, | |
1399 | sector_t capacity, int geom[]) | |
1400 | { | |
1401 | int heads, sectors, cylinders; | |
1402 | TW_Device_Extension *tw_dev; | |
1403 | ||
1404 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam()\n"); | |
1405 | tw_dev = (TW_Device_Extension *)sdev->host->hostdata; | |
1406 | ||
1407 | heads = 64; | |
1408 | sectors = 32; | |
1409 | cylinders = sector_div(capacity, heads * sectors); | |
1410 | ||
1411 | if (capacity >= 0x200000) { | |
1412 | heads = 255; | |
1413 | sectors = 63; | |
1414 | cylinders = sector_div(capacity, heads * sectors); | |
1415 | } | |
1416 | ||
1417 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_biosparam(): heads = %d, sectors = %d, cylinders = %d\n", heads, sectors, cylinders); | |
1418 | geom[0] = heads; | |
1419 | geom[1] = sectors; | |
1420 | geom[2] = cylinders; | |
1421 | ||
1422 | return 0; | |
1423 | } /* End tw_scsi_biosparam() */ | |
1424 | ||
1425 | /* This is the new scsi eh reset function */ | |
1426 | static int tw_scsi_eh_reset(struct scsi_cmnd *SCpnt) | |
1427 | { | |
1428 | TW_Device_Extension *tw_dev=NULL; | |
1429 | int retval = FAILED; | |
1430 | ||
1431 | tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1432 | ||
1433 | spin_unlock_irq(tw_dev->host->host_lock); | |
1434 | ||
1435 | tw_dev->num_resets++; | |
1436 | ||
1437 | printk(KERN_WARNING "3w-xxxx: scsi%d: WARNING: Unit #%d: Command (0x%x) timed out, resetting card.\n", tw_dev->host->host_no, SCpnt->device->id, SCpnt->cmnd[0]); | |
1438 | ||
1439 | /* Now reset the card and some of the device extension data */ | |
1440 | if (tw_reset_device_extension(tw_dev, 0)) { | |
1441 | printk(KERN_WARNING "3w-xxxx: scsi%d: Reset failed.\n", tw_dev->host->host_no); | |
1442 | goto out; | |
1443 | } | |
1444 | ||
1445 | retval = SUCCESS; | |
1446 | out: | |
1447 | spin_lock_irq(tw_dev->host->host_lock); | |
1448 | return retval; | |
1449 | } /* End tw_scsi_eh_reset() */ | |
1450 | ||
1451 | /* This function handles scsi inquiry commands */ | |
1452 | static int tw_scsiop_inquiry(TW_Device_Extension *tw_dev, int request_id) | |
1453 | { | |
1454 | TW_Param *param; | |
1455 | TW_Command *command_packet; | |
1456 | unsigned long command_que_value; | |
1457 | unsigned long param_value; | |
1458 | ||
1459 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry()\n"); | |
1460 | ||
1461 | /* Initialize command packet */ | |
1462 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1463 | if (command_packet == NULL) { | |
1464 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet virtual address.\n"); | |
1465 | return 1; | |
1466 | } | |
1467 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1468 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1469 | command_packet->size = 4; | |
1470 | command_packet->request_id = request_id; | |
1471 | command_packet->status = 0; | |
1472 | command_packet->flags = 0; | |
1473 | command_packet->byte6.parameter_count = 1; | |
1474 | ||
1475 | /* Now setup the param */ | |
1476 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1477 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment virtual address.\n"); | |
1478 | return 1; | |
1479 | } | |
1480 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1481 | memset(param, 0, sizeof(TW_Sector)); | |
1482 | param->table_id = 3; /* unit summary table */ | |
1483 | param->parameter_id = 3; /* unitsstatus parameter */ | |
1484 | param->parameter_size_bytes = TW_MAX_UNITS; | |
1485 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1486 | if (param_value == 0) { | |
1487 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad alignment physical address.\n"); | |
1488 | return 1; | |
1489 | } | |
1490 | ||
1491 | command_packet->byte8.param.sgl[0].address = param_value; | |
1492 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1493 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1494 | if (command_que_value == 0) { | |
1495 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry(): Bad command packet physical address.\n"); | |
1496 | return 1; | |
1497 | } | |
1498 | ||
1499 | /* Now try to post the command packet */ | |
1500 | tw_post_command_packet(tw_dev, request_id); | |
1501 | ||
1502 | return 0; | |
1503 | } /* End tw_scsiop_inquiry() */ | |
1504 | ||
1505 | /* This function is called by the isr to complete an inquiry command */ | |
1506 | static int tw_scsiop_inquiry_complete(TW_Device_Extension *tw_dev, int request_id) | |
1507 | { | |
1508 | unsigned char *is_unit_present; | |
1509 | unsigned char *request_buffer; | |
1510 | TW_Param *param; | |
1511 | ||
1512 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_inquiry_complete()\n"); | |
1513 | ||
1514 | /* Fill request buffer */ | |
1515 | if (tw_dev->srb[request_id]->request_buffer == NULL) { | |
1516 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Request buffer NULL.\n"); | |
1517 | return 1; | |
1518 | } | |
1519 | request_buffer = tw_dev->srb[request_id]->request_buffer; | |
1520 | memset(request_buffer, 0, tw_dev->srb[request_id]->request_bufflen); | |
1521 | request_buffer[0] = TYPE_DISK; /* Peripheral device type */ | |
1522 | request_buffer[1] = 0; /* Device type modifier */ | |
1523 | request_buffer[2] = 0; /* No ansi/iso compliance */ | |
1524 | request_buffer[4] = 31; /* Additional length */ | |
1525 | memcpy(&request_buffer[8], "3ware ", 8); /* Vendor ID */ | |
1526 | sprintf(&request_buffer[16], "Logical Disk %-2d ", tw_dev->srb[request_id]->device->id); | |
1527 | memcpy(&request_buffer[32], TW_DRIVER_VERSION, 3); | |
1528 | ||
1529 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1530 | if (param == NULL) { | |
1531 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_inquiry_complete(): Bad alignment virtual address.\n"); | |
1532 | return 1; | |
1533 | } | |
1534 | is_unit_present = &(param->data[0]); | |
1535 | ||
1536 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { | |
1537 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; | |
1538 | } else { | |
1539 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; | |
1540 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); | |
1541 | return TW_ISR_DONT_RESULT; | |
1542 | } | |
1543 | ||
1544 | return 0; | |
1545 | } /* End tw_scsiop_inquiry_complete() */ | |
1546 | ||
1547 | /* This function handles scsi mode_sense commands */ | |
1548 | static int tw_scsiop_mode_sense(TW_Device_Extension *tw_dev, int request_id) | |
1549 | { | |
1550 | TW_Param *param; | |
1551 | TW_Command *command_packet; | |
1552 | unsigned long command_que_value; | |
1553 | unsigned long param_value; | |
1554 | ||
1555 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense()\n"); | |
1556 | ||
1557 | /* Only page control = 0, page code = 0x8 (cache page) supported */ | |
1558 | if (tw_dev->srb[request_id]->cmnd[2] != 0x8) { | |
1559 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1560 | tw_state_request_finish(tw_dev, request_id); | |
1561 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
1562 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | /* Now read firmware cache setting for this unit */ | |
1567 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1568 | if (command_packet == NULL) { | |
1569 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet virtual address.\n"); | |
1570 | return 1; | |
1571 | } | |
1572 | ||
1573 | /* Setup the command packet */ | |
1574 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1575 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1576 | command_packet->size = 4; | |
1577 | command_packet->request_id = request_id; | |
1578 | command_packet->status = 0; | |
1579 | command_packet->flags = 0; | |
1580 | command_packet->byte6.parameter_count = 1; | |
1581 | ||
1582 | /* Setup the param */ | |
1583 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1584 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment virtual address.\n"); | |
1585 | return 1; | |
1586 | } | |
1587 | ||
1588 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1589 | memset(param, 0, sizeof(TW_Sector)); | |
1590 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + tw_dev->srb[request_id]->device->id; | |
1591 | param->parameter_id = 7; /* unit flags */ | |
1592 | param->parameter_size_bytes = 1; | |
1593 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1594 | if (param_value == 0) { | |
1595 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad alignment physical address.\n"); | |
1596 | return 1; | |
1597 | } | |
1598 | ||
1599 | command_packet->byte8.param.sgl[0].address = param_value; | |
1600 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1601 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1602 | if (command_que_value == 0) { | |
1603 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense(): Bad command packet physical address.\n"); | |
1604 | return 1; | |
1605 | } | |
1606 | ||
1607 | /* Now try to post the command packet */ | |
1608 | tw_post_command_packet(tw_dev, request_id); | |
1609 | ||
1610 | return 0; | |
1611 | } /* End tw_scsiop_mode_sense() */ | |
1612 | ||
1613 | /* This function is called by the isr to complete a mode sense command */ | |
1614 | static int tw_scsiop_mode_sense_complete(TW_Device_Extension *tw_dev, int request_id) | |
1615 | { | |
1616 | TW_Param *param; | |
1617 | unsigned char *flags; | |
1618 | unsigned char *request_buffer; | |
1619 | ||
1620 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_mode_sense_complete()\n"); | |
1621 | ||
1622 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1623 | if (param == NULL) { | |
1624 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_mode_sense_complete(): Bad alignment virtual address.\n"); | |
1625 | return 1; | |
1626 | } | |
1627 | flags = (char *)&(param->data[0]); | |
1628 | request_buffer = tw_dev->srb[request_id]->buffer; | |
1629 | memset(request_buffer, 0, tw_dev->srb[request_id]->request_bufflen); | |
1630 | ||
1631 | request_buffer[0] = 0xf; /* mode data length */ | |
1632 | request_buffer[1] = 0; /* default medium type */ | |
1633 | request_buffer[2] = 0x10; /* dpo/fua support on */ | |
1634 | request_buffer[3] = 0; /* no block descriptors */ | |
1635 | request_buffer[4] = 0x8; /* caching page */ | |
1636 | request_buffer[5] = 0xa; /* page length */ | |
1637 | if (*flags & 0x1) | |
1638 | request_buffer[6] = 0x4; /* WCE on */ | |
1639 | else | |
1640 | request_buffer[6] = 0x0; /* WCE off */ | |
1641 | ||
1642 | return 0; | |
1643 | } /* End tw_scsiop_mode_sense_complete() */ | |
1644 | ||
1645 | /* This function handles scsi read_capacity commands */ | |
1646 | static int tw_scsiop_read_capacity(TW_Device_Extension *tw_dev, int request_id) | |
1647 | { | |
1648 | TW_Param *param; | |
1649 | TW_Command *command_packet; | |
1650 | unsigned long command_que_value; | |
1651 | unsigned long param_value; | |
1652 | ||
1653 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity()\n"); | |
1654 | ||
1655 | /* Initialize command packet */ | |
1656 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1657 | ||
1658 | if (command_packet == NULL) { | |
1659 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet virtual address.\n"); | |
1660 | return 1; | |
1661 | } | |
1662 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1663 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1664 | command_packet->size = 4; | |
1665 | command_packet->request_id = request_id; | |
1666 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); | |
1667 | command_packet->status = 0; | |
1668 | command_packet->flags = 0; | |
1669 | command_packet->byte6.block_count = 1; | |
1670 | ||
1671 | /* Now setup the param */ | |
1672 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1673 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment virtual address.\n"); | |
1674 | return 1; | |
1675 | } | |
1676 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1677 | memset(param, 0, sizeof(TW_Sector)); | |
1678 | param->table_id = TW_UNIT_INFORMATION_TABLE_BASE + | |
1679 | tw_dev->srb[request_id]->device->id; | |
1680 | param->parameter_id = 4; /* unitcapacity parameter */ | |
1681 | param->parameter_size_bytes = 4; | |
1682 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1683 | if (param_value == 0) { | |
1684 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad alignment physical address.\n"); | |
1685 | return 1; | |
1686 | } | |
1687 | ||
1688 | command_packet->byte8.param.sgl[0].address = param_value; | |
1689 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1690 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1691 | if (command_que_value == 0) { | |
1692 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity(): Bad command packet physical address.\n"); | |
1693 | return 1; | |
1694 | } | |
1695 | ||
1696 | /* Now try to post the command to the board */ | |
1697 | tw_post_command_packet(tw_dev, request_id); | |
1698 | ||
1699 | return 0; | |
1700 | } /* End tw_scsiop_read_capacity() */ | |
1701 | ||
1702 | /* This function is called by the isr to complete a readcapacity command */ | |
1703 | static int tw_scsiop_read_capacity_complete(TW_Device_Extension *tw_dev, int request_id) | |
1704 | { | |
1705 | unsigned char *param_data; | |
1706 | u32 capacity; | |
1707 | char *buff; | |
1708 | TW_Param *param; | |
1709 | ||
1710 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete()\n"); | |
1711 | ||
1712 | buff = tw_dev->srb[request_id]->request_buffer; | |
1713 | if (buff == NULL) { | |
1714 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Request buffer NULL.\n"); | |
1715 | return 1; | |
1716 | } | |
1717 | memset(buff, 0, tw_dev->srb[request_id]->request_bufflen); | |
1718 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1719 | if (param == NULL) { | |
1720 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_capacity_complete(): Bad alignment virtual address.\n"); | |
1721 | return 1; | |
1722 | } | |
1723 | param_data = &(param->data[0]); | |
1724 | ||
1725 | capacity = (param_data[3] << 24) | (param_data[2] << 16) | | |
1726 | (param_data[1] << 8) | param_data[0]; | |
1727 | ||
1728 | /* Subtract one sector to fix get last sector ioctl */ | |
1729 | capacity -= 1; | |
1730 | ||
1731 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_capacity_complete(): Capacity = 0x%x.\n", capacity); | |
1732 | ||
1733 | /* Number of LBA's */ | |
1734 | buff[0] = (capacity >> 24); | |
1735 | buff[1] = (capacity >> 16) & 0xff; | |
1736 | buff[2] = (capacity >> 8) & 0xff; | |
1737 | buff[3] = capacity & 0xff; | |
1738 | ||
1739 | /* Block size in bytes (512) */ | |
1740 | buff[4] = (TW_BLOCK_SIZE >> 24); | |
1741 | buff[5] = (TW_BLOCK_SIZE >> 16) & 0xff; | |
1742 | buff[6] = (TW_BLOCK_SIZE >> 8) & 0xff; | |
1743 | buff[7] = TW_BLOCK_SIZE & 0xff; | |
1744 | ||
1745 | return 0; | |
1746 | } /* End tw_scsiop_read_capacity_complete() */ | |
1747 | ||
1748 | /* This function handles scsi read or write commands */ | |
1749 | static int tw_scsiop_read_write(TW_Device_Extension *tw_dev, int request_id) | |
1750 | { | |
1751 | TW_Command *command_packet; | |
1752 | unsigned long command_que_value; | |
1753 | u32 lba = 0x0, num_sectors = 0x0, buffaddr = 0x0; | |
1754 | int i, use_sg; | |
1755 | struct scsi_cmnd *srb; | |
1756 | struct scatterlist *sglist; | |
1757 | ||
1758 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write()\n"); | |
1759 | ||
1760 | if (tw_dev->srb[request_id]->request_buffer == NULL) { | |
1761 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Request buffer NULL.\n"); | |
1762 | return 1; | |
1763 | } | |
1764 | sglist = (struct scatterlist *)tw_dev->srb[request_id]->request_buffer; | |
1765 | srb = tw_dev->srb[request_id]; | |
1766 | ||
1767 | /* Initialize command packet */ | |
1768 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1769 | if (command_packet == NULL) { | |
1770 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): Bad command packet virtual address.\n"); | |
1771 | return 1; | |
1772 | } | |
1773 | ||
1774 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == READ_10) { | |
1775 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_READ); | |
1776 | } else { | |
1777 | command_packet->opcode__sgloffset = TW_OPSGL_IN(3, TW_OP_WRITE); | |
1778 | } | |
1779 | ||
1780 | command_packet->size = 3; | |
1781 | command_packet->request_id = request_id; | |
1782 | command_packet->unit__hostid = TW_UNITHOST_IN(0, srb->device->id); | |
1783 | command_packet->status = 0; | |
1784 | command_packet->flags = 0; | |
1785 | ||
1786 | if (srb->cmnd[0] == WRITE_10) { | |
1787 | if ((srb->cmnd[1] & 0x8) || (srb->cmnd[1] & 0x10)) | |
1788 | command_packet->flags = 1; | |
1789 | } | |
1790 | ||
1791 | if (srb->cmnd[0] == READ_6 || srb->cmnd[0] == WRITE_6) { | |
1792 | lba = ((u32)srb->cmnd[1] << 16) | ((u32)srb->cmnd[2] << 8) | (u32)srb->cmnd[3]; | |
1793 | num_sectors = (u32)srb->cmnd[4]; | |
1794 | } else { | |
1795 | lba = ((u32)srb->cmnd[2] << 24) | ((u32)srb->cmnd[3] << 16) | ((u32)srb->cmnd[4] << 8) | (u32)srb->cmnd[5]; | |
1796 | num_sectors = (u32)srb->cmnd[8] | ((u32)srb->cmnd[7] << 8); | |
1797 | } | |
1798 | ||
1799 | /* Update sector statistic */ | |
1800 | tw_dev->sector_count = num_sectors; | |
1801 | if (tw_dev->sector_count > tw_dev->max_sector_count) | |
1802 | tw_dev->max_sector_count = tw_dev->sector_count; | |
1803 | ||
1804 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): lba = 0x%x num_sectors = 0x%x\n", lba, num_sectors); | |
1805 | command_packet->byte8.io.lba = lba; | |
1806 | command_packet->byte6.block_count = num_sectors; | |
1807 | ||
1808 | /* Do this if there are no sg list entries */ | |
1809 | if (tw_dev->srb[request_id]->use_sg == 0) { | |
1810 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_read_write(): SG = 0\n"); | |
1811 | buffaddr = tw_map_scsi_single_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); | |
1812 | if (buffaddr == 0) | |
1813 | return 1; | |
1814 | ||
1815 | command_packet->byte8.io.sgl[0].address = buffaddr; | |
1816 | command_packet->byte8.io.sgl[0].length = tw_dev->srb[request_id]->request_bufflen; | |
1817 | command_packet->size+=2; | |
1818 | } | |
1819 | ||
1820 | /* Do this if we have multiple sg list entries */ | |
1821 | if (tw_dev->srb[request_id]->use_sg > 0) { | |
1822 | use_sg = tw_map_scsi_sg_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); | |
1823 | if (use_sg == 0) | |
1824 | return 1; | |
1825 | ||
1826 | for (i=0;i<use_sg; i++) { | |
1827 | command_packet->byte8.io.sgl[i].address = sg_dma_address(&sglist[i]); | |
1828 | command_packet->byte8.io.sgl[i].length = sg_dma_len(&sglist[i]); | |
1829 | command_packet->size+=2; | |
1830 | } | |
1831 | } | |
1832 | ||
1833 | /* Update SG statistics */ | |
1834 | tw_dev->sgl_entries = tw_dev->srb[request_id]->use_sg; | |
1835 | if (tw_dev->sgl_entries > tw_dev->max_sgl_entries) | |
1836 | tw_dev->max_sgl_entries = tw_dev->sgl_entries; | |
1837 | ||
1838 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1839 | if (command_que_value == 0) { | |
1840 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_read_write(): Bad command packet physical address.\n"); | |
1841 | return 1; | |
1842 | } | |
1843 | ||
1844 | /* Now try to post the command to the board */ | |
1845 | tw_post_command_packet(tw_dev, request_id); | |
1846 | ||
1847 | return 0; | |
1848 | } /* End tw_scsiop_read_write() */ | |
1849 | ||
1850 | /* This function will handle the request sense scsi command */ | |
1851 | static int tw_scsiop_request_sense(TW_Device_Extension *tw_dev, int request_id) | |
1852 | { | |
1853 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_request_sense()\n"); | |
1854 | ||
1855 | /* For now we just zero the request buffer */ | |
1856 | memset(tw_dev->srb[request_id]->request_buffer, 0, tw_dev->srb[request_id]->request_bufflen); | |
1857 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
1858 | tw_state_request_finish(tw_dev, request_id); | |
1859 | ||
1860 | /* If we got a request_sense, we probably want a reset, return error */ | |
1861 | tw_dev->srb[request_id]->result = (DID_ERROR << 16); | |
1862 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
1863 | ||
1864 | return 0; | |
1865 | } /* End tw_scsiop_request_sense() */ | |
1866 | ||
1867 | /* This function will handle synchronize cache scsi command */ | |
1868 | static int tw_scsiop_synchronize_cache(TW_Device_Extension *tw_dev, int request_id) | |
1869 | { | |
1870 | TW_Command *command_packet; | |
1871 | unsigned long command_que_value; | |
1872 | ||
1873 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_synchronize_cache()\n"); | |
1874 | ||
1875 | /* Send firmware flush command for this unit */ | |
1876 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1877 | if (command_packet == NULL) { | |
1878 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet virtual address.\n"); | |
1879 | return 1; | |
1880 | } | |
1881 | ||
1882 | /* Setup the command packet */ | |
1883 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1884 | command_packet->opcode__sgloffset = TW_OPSGL_IN(0, TW_OP_FLUSH_CACHE); | |
1885 | command_packet->size = 2; | |
1886 | command_packet->request_id = request_id; | |
1887 | command_packet->unit__hostid = TW_UNITHOST_IN(0, tw_dev->srb[request_id]->device->id); | |
1888 | command_packet->status = 0; | |
1889 | command_packet->flags = 0; | |
1890 | command_packet->byte6.parameter_count = 1; | |
1891 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1892 | if (command_que_value == 0) { | |
1893 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_synchronize_cache(): Bad command packet physical address.\n"); | |
1894 | return 1; | |
1895 | } | |
1896 | ||
1897 | /* Now try to post the command packet */ | |
1898 | tw_post_command_packet(tw_dev, request_id); | |
1899 | ||
1900 | return 0; | |
1901 | } /* End tw_scsiop_synchronize_cache() */ | |
1902 | ||
1903 | /* This function will handle test unit ready scsi command */ | |
1904 | static int tw_scsiop_test_unit_ready(TW_Device_Extension *tw_dev, int request_id) | |
1905 | { | |
1906 | TW_Param *param; | |
1907 | TW_Command *command_packet; | |
1908 | unsigned long command_que_value; | |
1909 | unsigned long param_value; | |
1910 | ||
1911 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsiop_test_unit_ready()\n"); | |
1912 | ||
1913 | /* Initialize command packet */ | |
1914 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
1915 | if (command_packet == NULL) { | |
1916 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet virtual address.\n"); | |
1917 | return 1; | |
1918 | } | |
1919 | memset(command_packet, 0, sizeof(TW_Sector)); | |
1920 | command_packet->opcode__sgloffset = TW_OPSGL_IN(2, TW_OP_GET_PARAM); | |
1921 | command_packet->size = 4; | |
1922 | command_packet->request_id = request_id; | |
1923 | command_packet->status = 0; | |
1924 | command_packet->flags = 0; | |
1925 | command_packet->byte6.parameter_count = 1; | |
1926 | ||
1927 | /* Now setup the param */ | |
1928 | if (tw_dev->alignment_virtual_address[request_id] == NULL) { | |
1929 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment virtual address.\n"); | |
1930 | return 1; | |
1931 | } | |
1932 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1933 | memset(param, 0, sizeof(TW_Sector)); | |
1934 | param->table_id = 3; /* unit summary table */ | |
1935 | param->parameter_id = 3; /* unitsstatus parameter */ | |
1936 | param->parameter_size_bytes = TW_MAX_UNITS; | |
1937 | param_value = tw_dev->alignment_physical_address[request_id]; | |
1938 | if (param_value == 0) { | |
1939 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad alignment physical address.\n"); | |
1940 | return 1; | |
1941 | } | |
1942 | ||
1943 | command_packet->byte8.param.sgl[0].address = param_value; | |
1944 | command_packet->byte8.param.sgl[0].length = sizeof(TW_Sector); | |
1945 | command_que_value = tw_dev->command_packet_physical_address[request_id]; | |
1946 | if (command_que_value == 0) { | |
1947 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready(): Bad command packet physical address.\n"); | |
1948 | return 1; | |
1949 | } | |
1950 | ||
1951 | /* Now try to post the command packet */ | |
1952 | tw_post_command_packet(tw_dev, request_id); | |
1953 | ||
1954 | return 0; | |
1955 | } /* End tw_scsiop_test_unit_ready() */ | |
1956 | ||
1957 | /* This function is called by the isr to complete a testunitready command */ | |
1958 | static int tw_scsiop_test_unit_ready_complete(TW_Device_Extension *tw_dev, int request_id) | |
1959 | { | |
1960 | unsigned char *is_unit_present; | |
1961 | TW_Param *param; | |
1962 | ||
1963 | dprintk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete()\n"); | |
1964 | ||
1965 | param = (TW_Param *)tw_dev->alignment_virtual_address[request_id]; | |
1966 | if (param == NULL) { | |
1967 | printk(KERN_WARNING "3w-xxxx: tw_scsiop_test_unit_ready_complete(): Bad alignment virtual address.\n"); | |
1968 | return 1; | |
1969 | } | |
1970 | is_unit_present = &(param->data[0]); | |
1971 | ||
1972 | if (is_unit_present[tw_dev->srb[request_id]->device->id] & TW_UNIT_ONLINE) { | |
1973 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 1; | |
1974 | } else { | |
1975 | tw_dev->is_unit_present[tw_dev->srb[request_id]->device->id] = 0; | |
1976 | tw_dev->srb[request_id]->result = (DID_BAD_TARGET << 16); | |
1977 | return TW_ISR_DONT_RESULT; | |
1978 | } | |
1979 | ||
1980 | return 0; | |
1981 | } /* End tw_scsiop_test_unit_ready_complete() */ | |
1982 | ||
1983 | /* This is the main scsi queue function to handle scsi opcodes */ | |
1984 | static int tw_scsi_queue(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) | |
1985 | { | |
1986 | unsigned char *command = SCpnt->cmnd; | |
1987 | int request_id = 0; | |
1988 | int retval = 1; | |
1989 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)SCpnt->device->host->hostdata; | |
1990 | ||
1991 | /* Save done function into Scsi_Cmnd struct */ | |
1992 | SCpnt->scsi_done = done; | |
1993 | ||
1994 | /* Queue the command and get a request id */ | |
1995 | tw_state_request_start(tw_dev, &request_id); | |
1996 | ||
1997 | /* Save the scsi command for use by the ISR */ | |
1998 | tw_dev->srb[request_id] = SCpnt; | |
1999 | ||
2000 | /* Initialize phase to zero */ | |
2001 | SCpnt->SCp.phase = TW_PHASE_INITIAL; | |
2002 | ||
2003 | switch (*command) { | |
2004 | case READ_10: | |
2005 | case READ_6: | |
2006 | case WRITE_10: | |
2007 | case WRITE_6: | |
2008 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ/WRITE.\n"); | |
2009 | retval = tw_scsiop_read_write(tw_dev, request_id); | |
2010 | break; | |
2011 | case TEST_UNIT_READY: | |
2012 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught TEST_UNIT_READY.\n"); | |
2013 | retval = tw_scsiop_test_unit_ready(tw_dev, request_id); | |
2014 | break; | |
2015 | case INQUIRY: | |
2016 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught INQUIRY.\n"); | |
2017 | retval = tw_scsiop_inquiry(tw_dev, request_id); | |
2018 | break; | |
2019 | case READ_CAPACITY: | |
2020 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught READ_CAPACITY.\n"); | |
2021 | retval = tw_scsiop_read_capacity(tw_dev, request_id); | |
2022 | break; | |
2023 | case REQUEST_SENSE: | |
2024 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught REQUEST_SENSE.\n"); | |
2025 | retval = tw_scsiop_request_sense(tw_dev, request_id); | |
2026 | break; | |
2027 | case MODE_SENSE: | |
2028 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught MODE_SENSE.\n"); | |
2029 | retval = tw_scsiop_mode_sense(tw_dev, request_id); | |
2030 | break; | |
2031 | case SYNCHRONIZE_CACHE: | |
2032 | dprintk(KERN_NOTICE "3w-xxxx: tw_scsi_queue(): caught SYNCHRONIZE_CACHE.\n"); | |
2033 | retval = tw_scsiop_synchronize_cache(tw_dev, request_id); | |
2034 | break; | |
2035 | case TW_IOCTL: | |
2036 | printk(KERN_WARNING "3w-xxxx: SCSI_IOCTL_SEND_COMMAND deprecated, please update your 3ware tools.\n"); | |
2037 | break; | |
2038 | default: | |
2039 | printk(KERN_NOTICE "3w-xxxx: scsi%d: Unknown scsi opcode: 0x%x\n", tw_dev->host->host_no, *command); | |
2040 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2041 | tw_state_request_finish(tw_dev, request_id); | |
2042 | SCpnt->result = (DID_BAD_TARGET << 16); | |
2043 | done(SCpnt); | |
2044 | retval = 0; | |
2045 | } | |
2046 | if (retval) { | |
2047 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2048 | tw_state_request_finish(tw_dev, request_id); | |
2049 | SCpnt->result = (DID_ERROR << 16); | |
2050 | done(SCpnt); | |
2051 | retval = 0; | |
2052 | } | |
2053 | return retval; | |
2054 | } /* End tw_scsi_queue() */ | |
2055 | ||
2056 | /* This function is the interrupt service routine */ | |
2057 | static irqreturn_t tw_interrupt(int irq, void *dev_instance, | |
2058 | struct pt_regs *regs) | |
2059 | { | |
2060 | int request_id; | |
2061 | u32 status_reg_value; | |
2062 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)dev_instance; | |
2063 | TW_Response_Queue response_que; | |
2064 | int error = 0, retval = 0; | |
2065 | TW_Command *command_packet; | |
2066 | int handled = 0; | |
2067 | ||
2068 | /* Get the host lock for io completions */ | |
2069 | spin_lock(tw_dev->host->host_lock); | |
2070 | ||
2071 | /* Read the registers */ | |
2072 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
2073 | ||
2074 | /* Check if this is our interrupt, otherwise bail */ | |
2075 | if (!(status_reg_value & TW_STATUS_VALID_INTERRUPT)) | |
2076 | goto tw_interrupt_bail; | |
2077 | ||
2078 | handled = 1; | |
2079 | ||
2080 | /* Check controller for errors */ | |
2081 | if (tw_check_bits(status_reg_value)) { | |
2082 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); | |
2083 | if (tw_decode_bits(tw_dev, status_reg_value, 1)) { | |
2084 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
2085 | goto tw_interrupt_bail; | |
2086 | } | |
2087 | } | |
2088 | ||
2089 | /* Handle host interrupt */ | |
2090 | if (status_reg_value & TW_STATUS_HOST_INTERRUPT) { | |
2091 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received host interrupt.\n"); | |
2092 | TW_CLEAR_HOST_INTERRUPT(tw_dev); | |
2093 | } | |
2094 | ||
2095 | /* Handle attention interrupt */ | |
2096 | if (status_reg_value & TW_STATUS_ATTENTION_INTERRUPT) { | |
2097 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Received attention interrupt.\n"); | |
2098 | TW_CLEAR_ATTENTION_INTERRUPT(tw_dev); | |
2099 | tw_state_request_start(tw_dev, &request_id); | |
2100 | error = tw_aen_read_queue(tw_dev, request_id); | |
2101 | if (error) { | |
2102 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error reading aen queue.\n", tw_dev->host->host_no); | |
2103 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2104 | tw_state_request_finish(tw_dev, request_id); | |
2105 | } | |
2106 | } | |
2107 | ||
2108 | /* Handle command interrupt */ | |
2109 | if (status_reg_value & TW_STATUS_COMMAND_INTERRUPT) { | |
2110 | /* Drain as many pending commands as we can */ | |
2111 | while (tw_dev->pending_request_count > 0) { | |
2112 | request_id = tw_dev->pending_queue[tw_dev->pending_head]; | |
2113 | if (tw_dev->state[request_id] != TW_S_PENDING) { | |
2114 | printk(KERN_WARNING "3w-xxxx: scsi%d: Found request id that wasn't pending.\n", tw_dev->host->host_no); | |
2115 | break; | |
2116 | } | |
2117 | if (tw_post_command_packet(tw_dev, request_id)==0) { | |
2118 | if (tw_dev->pending_head == TW_Q_LENGTH-1) { | |
2119 | tw_dev->pending_head = TW_Q_START; | |
2120 | } else { | |
2121 | tw_dev->pending_head = tw_dev->pending_head + 1; | |
2122 | } | |
2123 | tw_dev->pending_request_count--; | |
2124 | } else { | |
2125 | /* If we get here, we will continue re-posting on the next command interrupt */ | |
2126 | break; | |
2127 | } | |
2128 | } | |
2129 | /* If there are no more pending requests, we mask command interrupt */ | |
2130 | if (tw_dev->pending_request_count == 0) | |
2131 | TW_MASK_COMMAND_INTERRUPT(tw_dev); | |
2132 | } | |
2133 | ||
2134 | /* Handle response interrupt */ | |
2135 | if (status_reg_value & TW_STATUS_RESPONSE_INTERRUPT) { | |
2136 | /* Drain the response queue from the board */ | |
2137 | while ((status_reg_value & TW_STATUS_RESPONSE_QUEUE_EMPTY) == 0) { | |
2138 | /* Read response queue register */ | |
2139 | response_que.value = inl(TW_RESPONSE_QUEUE_REG_ADDR(tw_dev)); | |
2140 | request_id = TW_RESID_OUT(response_que.response_id); | |
2141 | command_packet = (TW_Command *)tw_dev->command_packet_virtual_address[request_id]; | |
2142 | error = 0; | |
2143 | ||
2144 | /* Check for bad response */ | |
2145 | if (command_packet->status != 0) { | |
2146 | /* If internal command, don't error, don't fill sense */ | |
2147 | if (tw_dev->srb[request_id] == NULL) { | |
2148 | tw_decode_sense(tw_dev, request_id, 0); | |
2149 | } else { | |
2150 | error = tw_decode_sense(tw_dev, request_id, 1); | |
2151 | } | |
2152 | } | |
2153 | ||
2154 | /* Check for correct state */ | |
2155 | if (tw_dev->state[request_id] != TW_S_POSTED) { | |
2156 | if (tw_dev->srb[request_id] != NULL) { | |
2157 | printk(KERN_WARNING "3w-xxxx: scsi%d: Received a request id that wasn't posted.\n", tw_dev->host->host_no); | |
2158 | error = 1; | |
2159 | } | |
2160 | } | |
2161 | ||
2162 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): Response queue request id: %d.\n", request_id); | |
2163 | ||
2164 | /* Check for internal command completion */ | |
2165 | if (tw_dev->srb[request_id] == NULL) { | |
2166 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Found internally posted command.\n"); | |
2167 | /* Check for chrdev ioctl completion */ | |
2168 | if (request_id != tw_dev->chrdev_request_id) { | |
2169 | retval = tw_aen_complete(tw_dev, request_id); | |
2170 | if (retval) { | |
2171 | printk(KERN_WARNING "3w-xxxx: scsi%d: Error completing aen.\n", tw_dev->host->host_no); | |
2172 | } | |
2173 | } else { | |
2174 | tw_dev->chrdev_request_id = TW_IOCTL_CHRDEV_FREE; | |
2175 | wake_up(&tw_dev->ioctl_wqueue); | |
2176 | } | |
2177 | } else { | |
2178 | switch (tw_dev->srb[request_id]->cmnd[0]) { | |
2179 | case READ_10: | |
2180 | case READ_6: | |
2181 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_10/READ_6\n"); | |
2182 | break; | |
2183 | case WRITE_10: | |
2184 | case WRITE_6: | |
2185 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught WRITE_10/WRITE_6\n"); | |
2186 | break; | |
2187 | case TEST_UNIT_READY: | |
2188 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught TEST_UNIT_READY\n"); | |
2189 | error = tw_scsiop_test_unit_ready_complete(tw_dev, request_id); | |
2190 | break; | |
2191 | case INQUIRY: | |
2192 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught INQUIRY\n"); | |
2193 | error = tw_scsiop_inquiry_complete(tw_dev, request_id); | |
2194 | break; | |
2195 | case READ_CAPACITY: | |
2196 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught READ_CAPACITY\n"); | |
2197 | error = tw_scsiop_read_capacity_complete(tw_dev, request_id); | |
2198 | break; | |
2199 | case MODE_SENSE: | |
2200 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught MODE_SENSE\n"); | |
2201 | error = tw_scsiop_mode_sense_complete(tw_dev, request_id); | |
2202 | break; | |
2203 | case SYNCHRONIZE_CACHE: | |
2204 | dprintk(KERN_NOTICE "3w-xxxx: tw_interrupt(): caught SYNCHRONIZE_CACHE\n"); | |
2205 | break; | |
2206 | default: | |
2207 | printk(KERN_WARNING "3w-xxxx: case slip in tw_interrupt()\n"); | |
2208 | error = 1; | |
2209 | } | |
2210 | ||
2211 | /* If no error command was a success */ | |
2212 | if (error == 0) { | |
2213 | tw_dev->srb[request_id]->result = (DID_OK << 16); | |
2214 | } | |
2215 | ||
2216 | /* If error, command failed */ | |
2217 | if (error == 1) { | |
2218 | /* Ask for a host reset */ | |
2219 | tw_dev->srb[request_id]->result = (DID_OK << 16) | (CHECK_CONDITION << 1); | |
2220 | } | |
2221 | ||
2222 | /* Now complete the io */ | |
2223 | if ((error != TW_ISR_DONT_COMPLETE)) { | |
2224 | tw_dev->state[request_id] = TW_S_COMPLETED; | |
2225 | tw_state_request_finish(tw_dev, request_id); | |
2226 | tw_dev->posted_request_count--; | |
2227 | tw_dev->srb[request_id]->scsi_done(tw_dev->srb[request_id]); | |
2228 | ||
2229 | tw_unmap_scsi_data(tw_dev->tw_pci_dev, tw_dev->srb[request_id]); | |
2230 | } | |
2231 | } | |
2232 | ||
2233 | /* Check for valid status after each drain */ | |
2234 | status_reg_value = inl(TW_STATUS_REG_ADDR(tw_dev)); | |
2235 | if (tw_check_bits(status_reg_value)) { | |
2236 | dprintk(KERN_WARNING "3w-xxxx: tw_interrupt(): Unexpected bits.\n"); | |
2237 | if (tw_decode_bits(tw_dev, status_reg_value, 1)) { | |
2238 | TW_CLEAR_ALL_INTERRUPTS(tw_dev); | |
2239 | goto tw_interrupt_bail; | |
2240 | } | |
2241 | } | |
2242 | } | |
2243 | } | |
2244 | ||
2245 | tw_interrupt_bail: | |
2246 | spin_unlock(tw_dev->host->host_lock); | |
2247 | return IRQ_RETVAL(handled); | |
2248 | } /* End tw_interrupt() */ | |
2249 | ||
2250 | /* This function tells the controller to shut down */ | |
2251 | static void __tw_shutdown(TW_Device_Extension *tw_dev) | |
2252 | { | |
2253 | /* Disable interrupts */ | |
2254 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2255 | ||
2256 | printk(KERN_WARNING "3w-xxxx: Shutting down host %d.\n", tw_dev->host->host_no); | |
2257 | ||
2258 | /* Tell the card we are shutting down */ | |
2259 | if (tw_initconnection(tw_dev, 1)) { | |
2260 | printk(KERN_WARNING "3w-xxxx: Connection shutdown failed.\n"); | |
2261 | } else { | |
2262 | printk(KERN_WARNING "3w-xxxx: Shutdown complete.\n"); | |
2263 | } | |
2264 | ||
2265 | /* Clear all interrupts just before exit */ | |
2266 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2267 | } /* End __tw_shutdown() */ | |
2268 | ||
2269 | /* Wrapper for __tw_shutdown */ | |
2270 | static void tw_shutdown(struct device *dev) | |
2271 | { | |
2272 | struct Scsi_Host *host = pci_get_drvdata(to_pci_dev(dev)); | |
2273 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2274 | ||
2275 | __tw_shutdown(tw_dev); | |
2276 | } /* End tw_shutdown() */ | |
2277 | ||
2278 | static struct scsi_host_template driver_template = { | |
2279 | .module = THIS_MODULE, | |
2280 | .name = "3ware Storage Controller", | |
2281 | .queuecommand = tw_scsi_queue, | |
2282 | .eh_host_reset_handler = tw_scsi_eh_reset, | |
2283 | .bios_param = tw_scsi_biosparam, | |
2284 | .change_queue_depth = tw_change_queue_depth, | |
2285 | .can_queue = TW_Q_LENGTH-2, | |
2286 | .this_id = -1, | |
2287 | .sg_tablesize = TW_MAX_SGL_LENGTH, | |
2288 | .max_sectors = TW_MAX_SECTORS, | |
2289 | .cmd_per_lun = TW_MAX_CMDS_PER_LUN, | |
2290 | .use_clustering = ENABLE_CLUSTERING, | |
2291 | .shost_attrs = tw_host_attrs, | |
2292 | .emulated = 1 | |
2293 | }; | |
2294 | ||
2295 | /* This function will probe and initialize a card */ | |
2296 | static int __devinit tw_probe(struct pci_dev *pdev, const struct pci_device_id *dev_id) | |
2297 | { | |
2298 | struct Scsi_Host *host = NULL; | |
2299 | TW_Device_Extension *tw_dev; | |
2300 | int retval = -ENODEV; | |
2301 | ||
2302 | retval = pci_enable_device(pdev); | |
2303 | if (retval) { | |
2304 | printk(KERN_WARNING "3w-xxxx: Failed to enable pci device."); | |
2305 | goto out_disable_device; | |
2306 | } | |
2307 | ||
2308 | pci_set_master(pdev); | |
2309 | ||
2310 | retval = pci_set_dma_mask(pdev, TW_DMA_MASK); | |
2311 | if (retval) { | |
2312 | printk(KERN_WARNING "3w-xxxx: Failed to set dma mask."); | |
2313 | goto out_disable_device; | |
2314 | } | |
2315 | ||
2316 | host = scsi_host_alloc(&driver_template, sizeof(TW_Device_Extension)); | |
2317 | if (!host) { | |
2318 | printk(KERN_WARNING "3w-xxxx: Failed to allocate memory for device extension."); | |
2319 | retval = -ENOMEM; | |
2320 | goto out_disable_device; | |
2321 | } | |
2322 | tw_dev = (TW_Device_Extension *)host->hostdata; | |
2323 | ||
2324 | memset(tw_dev, 0, sizeof(TW_Device_Extension)); | |
2325 | ||
2326 | /* Save values to device extension */ | |
2327 | tw_dev->host = host; | |
2328 | tw_dev->tw_pci_dev = pdev; | |
2329 | ||
2330 | if (tw_initialize_device_extension(tw_dev)) { | |
2331 | printk(KERN_WARNING "3w-xxxx: Failed to initialize device extension."); | |
2332 | goto out_free_device_extension; | |
2333 | } | |
2334 | ||
2335 | /* Request IO regions */ | |
2336 | retval = pci_request_regions(pdev, "3w-xxxx"); | |
2337 | if (retval) { | |
2338 | printk(KERN_WARNING "3w-xxxx: Failed to get mem region."); | |
2339 | goto out_free_device_extension; | |
2340 | } | |
2341 | ||
2342 | /* Save base address */ | |
2343 | tw_dev->base_addr = pci_resource_start(pdev, 0); | |
2344 | if (!tw_dev->base_addr) { | |
2345 | printk(KERN_WARNING "3w-xxxx: Failed to get io address."); | |
2346 | goto out_release_mem_region; | |
2347 | } | |
2348 | ||
2349 | /* Disable interrupts on the card */ | |
2350 | TW_DISABLE_INTERRUPTS(tw_dev); | |
2351 | ||
2352 | /* Initialize the card */ | |
2353 | if (tw_reset_sequence(tw_dev)) | |
2354 | goto out_release_mem_region; | |
2355 | ||
2356 | /* Set host specific parameters */ | |
2357 | host->max_id = TW_MAX_UNITS; | |
2358 | host->max_cmd_len = TW_MAX_CDB_LEN; | |
2359 | ||
2360 | /* Luns and channels aren't supported by adapter */ | |
2361 | host->max_lun = 0; | |
2362 | host->max_channel = 0; | |
2363 | ||
2364 | /* Register the card with the kernel SCSI layer */ | |
2365 | retval = scsi_add_host(host, &pdev->dev); | |
2366 | if (retval) { | |
2367 | printk(KERN_WARNING "3w-xxxx: scsi add host failed"); | |
2368 | goto out_release_mem_region; | |
2369 | } | |
2370 | ||
2371 | pci_set_drvdata(pdev, host); | |
2372 | ||
2373 | 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); | |
2374 | ||
2375 | /* Now setup the interrupt handler */ | |
2376 | retval = request_irq(pdev->irq, tw_interrupt, SA_SHIRQ, "3w-xxxx", tw_dev); | |
2377 | if (retval) { | |
2378 | printk(KERN_WARNING "3w-xxxx: Error requesting IRQ."); | |
2379 | goto out_remove_host; | |
2380 | } | |
2381 | ||
2382 | tw_device_extension_list[tw_device_extension_count] = tw_dev; | |
2383 | tw_device_extension_count++; | |
2384 | ||
2385 | /* Re-enable interrupts on the card */ | |
2386 | TW_ENABLE_AND_CLEAR_INTERRUPTS(tw_dev); | |
2387 | ||
2388 | /* Finally, scan the host */ | |
2389 | scsi_scan_host(host); | |
2390 | ||
2391 | if (twe_major == -1) { | |
2392 | if ((twe_major = register_chrdev (0, "twe", &tw_fops)) < 0) | |
2393 | printk(KERN_WARNING "3w-xxxx: Failed to register character device."); | |
2394 | } | |
2395 | return 0; | |
2396 | ||
2397 | out_remove_host: | |
2398 | scsi_remove_host(host); | |
2399 | out_release_mem_region: | |
2400 | pci_release_regions(pdev); | |
2401 | out_free_device_extension: | |
2402 | tw_free_device_extension(tw_dev); | |
2403 | scsi_host_put(host); | |
2404 | out_disable_device: | |
2405 | pci_disable_device(pdev); | |
2406 | ||
2407 | return retval; | |
2408 | } /* End tw_probe() */ | |
2409 | ||
2410 | /* This function is called to remove a device */ | |
2411 | static void tw_remove(struct pci_dev *pdev) | |
2412 | { | |
2413 | struct Scsi_Host *host = pci_get_drvdata(pdev); | |
2414 | TW_Device_Extension *tw_dev = (TW_Device_Extension *)host->hostdata; | |
2415 | ||
2416 | scsi_remove_host(tw_dev->host); | |
2417 | ||
2418 | /* Unregister character device */ | |
2419 | if (twe_major >= 0) { | |
2420 | unregister_chrdev(twe_major, "twe"); | |
2421 | twe_major = -1; | |
2422 | } | |
2423 | ||
2424 | /* Free up the IRQ */ | |
2425 | free_irq(tw_dev->tw_pci_dev->irq, tw_dev); | |
2426 | ||
2427 | /* Shutdown the card */ | |
2428 | __tw_shutdown(tw_dev); | |
2429 | ||
2430 | /* Free up the mem region */ | |
2431 | pci_release_regions(pdev); | |
2432 | ||
2433 | /* Free up device extension resources */ | |
2434 | tw_free_device_extension(tw_dev); | |
2435 | ||
2436 | scsi_host_put(tw_dev->host); | |
2437 | pci_disable_device(pdev); | |
2438 | tw_device_extension_count--; | |
2439 | } /* End tw_remove() */ | |
2440 | ||
2441 | /* PCI Devices supported by this driver */ | |
2442 | static struct pci_device_id tw_pci_tbl[] __devinitdata = { | |
2443 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_1000, | |
2444 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
2445 | { PCI_VENDOR_ID_3WARE, PCI_DEVICE_ID_3WARE_7000, | |
2446 | PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0}, | |
2447 | { } | |
2448 | }; | |
2449 | MODULE_DEVICE_TABLE(pci, tw_pci_tbl); | |
2450 | ||
2451 | /* pci_driver initializer */ | |
2452 | static struct pci_driver tw_driver = { | |
2453 | .name = "3w-xxxx", | |
2454 | .id_table = tw_pci_tbl, | |
2455 | .probe = tw_probe, | |
2456 | .remove = tw_remove, | |
2457 | .driver = { | |
2458 | .shutdown = tw_shutdown | |
2459 | } | |
2460 | }; | |
2461 | ||
2462 | /* This function is called on driver initialization */ | |
2463 | static int __init tw_init(void) | |
2464 | { | |
2465 | printk(KERN_WARNING "3ware Storage Controller device driver for Linux v%s.\n", TW_DRIVER_VERSION); | |
2466 | ||
2467 | return pci_module_init(&tw_driver); | |
2468 | } /* End tw_init() */ | |
2469 | ||
2470 | /* This function is called on driver exit */ | |
2471 | static void __exit tw_exit(void) | |
2472 | { | |
2473 | pci_unregister_driver(&tw_driver); | |
2474 | } /* End tw_exit() */ | |
2475 | ||
2476 | module_init(tw_init); | |
2477 | module_exit(tw_exit); | |
2478 |