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243eabcf MED |
1 | /* |
2 | * linux/drivers/message/fusion/mptspi.c | |
3 | * For use with LSI Logic PCI chip/adapter(s) | |
4 | * running LSI Logic Fusion MPT (Message Passing Technology) firmware. | |
5 | * | |
6 | * Copyright (c) 1999-2005 LSI Logic Corporation | |
7 | * (mailto:mpt_linux_developer@lsil.com) | |
8 | * | |
9 | */ | |
10 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
11 | /* | |
12 | This program is free software; you can redistribute it and/or modify | |
13 | it under the terms of the GNU General Public License as published by | |
14 | the Free Software Foundation; version 2 of the License. | |
15 | ||
16 | This program is distributed in the hope that it will be useful, | |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
20 | ||
21 | NO WARRANTY | |
22 | THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR | |
23 | CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT | |
24 | LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT, | |
25 | MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is | |
26 | solely responsible for determining the appropriateness of using and | |
27 | distributing the Program and assumes all risks associated with its | |
28 | exercise of rights under this Agreement, including but not limited to | |
29 | the risks and costs of program errors, damage to or loss of data, | |
30 | programs or equipment, and unavailability or interruption of operations. | |
31 | ||
32 | DISCLAIMER OF LIABILITY | |
33 | NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY | |
34 | DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
35 | DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND | |
36 | ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR | |
37 | TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE | |
38 | USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED | |
39 | HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES | |
40 | ||
41 | You should have received a copy of the GNU General Public License | |
42 | along with this program; if not, write to the Free Software | |
43 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
44 | */ | |
45 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
46 | ||
47 | #include "linux_compat.h" /* linux-2.6 tweaks */ | |
48 | #include <linux/module.h> | |
49 | #include <linux/kernel.h> | |
50 | #include <linux/init.h> | |
51 | #include <linux/errno.h> | |
52 | #include <linux/kdev_t.h> | |
53 | #include <linux/blkdev.h> | |
54 | #include <linux/delay.h> /* for mdelay */ | |
55 | #include <linux/interrupt.h> /* needed for in_interrupt() proto */ | |
56 | #include <linux/reboot.h> /* notifier code */ | |
57 | #include <linux/sched.h> | |
58 | #include <linux/workqueue.h> | |
59 | ||
60 | #include <scsi/scsi.h> | |
61 | #include <scsi/scsi_cmnd.h> | |
62 | #include <scsi/scsi_device.h> | |
63 | #include <scsi/scsi_host.h> | |
64 | #include <scsi/scsi_tcq.h> | |
65 | ||
66 | #include "mptbase.h" | |
67 | #include "mptscsih.h" | |
68 | ||
69 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
70 | #define my_NAME "Fusion MPT SPI Host driver" | |
71 | #define my_VERSION MPT_LINUX_VERSION_COMMON | |
72 | #define MYNAM "mptspi" | |
73 | ||
74 | MODULE_AUTHOR(MODULEAUTHOR); | |
75 | MODULE_DESCRIPTION(my_NAME); | |
76 | MODULE_LICENSE("GPL"); | |
77 | ||
78 | /* Command line args */ | |
79 | #ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION | |
80 | static int mpt_dv = MPTSCSIH_DOMAIN_VALIDATION; | |
81 | module_param(mpt_dv, int, 0); | |
82 | MODULE_PARM_DESC(mpt_dv, " DV Algorithm: enhanced=1, basic=0 (default=MPTSCSIH_DOMAIN_VALIDATION=1)"); | |
83 | ||
84 | static int mpt_width = MPTSCSIH_MAX_WIDTH; | |
85 | module_param(mpt_width, int, 0); | |
86 | MODULE_PARM_DESC(mpt_width, " Max Bus Width: wide=1, narrow=0 (default=MPTSCSIH_MAX_WIDTH=1)"); | |
87 | ||
88 | static ushort mpt_factor = MPTSCSIH_MIN_SYNC; | |
89 | module_param(mpt_factor, ushort, 0); | |
90 | MODULE_PARM_DESC(mpt_factor, " Min Sync Factor (default=MPTSCSIH_MIN_SYNC=0x08)"); | |
91 | #endif | |
92 | ||
93 | static int mpt_saf_te = MPTSCSIH_SAF_TE; | |
94 | module_param(mpt_saf_te, int, 0); | |
95 | MODULE_PARM_DESC(mpt_saf_te, " Force enabling SEP Processor: enable=1 (default=MPTSCSIH_SAF_TE=0)"); | |
96 | ||
97 | static int mpt_pq_filter = 0; | |
98 | module_param(mpt_pq_filter, int, 0); | |
99 | MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)"); | |
100 | ||
101 | static int mptspiDoneCtx = -1; | |
102 | static int mptspiTaskCtx = -1; | |
103 | static int mptspiInternalCtx = -1; /* Used only for internal commands */ | |
104 | ||
105 | static struct device_attribute mptspi_queue_depth_attr = { | |
106 | .attr = { | |
107 | .name = "queue_depth", | |
108 | .mode = S_IWUSR, | |
109 | }, | |
110 | .store = mptscsih_store_queue_depth, | |
111 | }; | |
112 | ||
113 | static struct device_attribute *mptspi_dev_attrs[] = { | |
114 | &mptspi_queue_depth_attr, | |
115 | NULL, | |
116 | }; | |
117 | ||
118 | static struct scsi_host_template mptspi_driver_template = { | |
119 | .proc_name = "mptspi", | |
120 | .proc_info = mptscsih_proc_info, | |
121 | .name = "MPT SPI Host", | |
122 | .info = mptscsih_info, | |
123 | .queuecommand = mptscsih_qcmd, | |
124 | .slave_alloc = mptscsih_slave_alloc, | |
125 | .slave_configure = mptscsih_slave_configure, | |
126 | .slave_destroy = mptscsih_slave_destroy, | |
127 | .eh_abort_handler = mptscsih_abort, | |
128 | .eh_device_reset_handler = mptscsih_dev_reset, | |
129 | .eh_bus_reset_handler = mptscsih_bus_reset, | |
130 | .eh_host_reset_handler = mptscsih_host_reset, | |
131 | .bios_param = mptscsih_bios_param, | |
132 | .can_queue = MPT_SCSI_CAN_QUEUE, | |
133 | .this_id = -1, | |
134 | .sg_tablesize = MPT_SCSI_SG_DEPTH, | |
135 | .max_sectors = 8192, | |
136 | .cmd_per_lun = 7, | |
137 | .use_clustering = ENABLE_CLUSTERING, | |
138 | .sdev_attrs = mptspi_dev_attrs, | |
139 | }; | |
140 | ||
141 | ||
142 | /**************************************************************************** | |
143 | * Supported hardware | |
144 | */ | |
145 | ||
146 | static struct pci_device_id mptspi_pci_table[] = { | |
147 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_53C1030, | |
148 | PCI_ANY_ID, PCI_ANY_ID }, | |
149 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_1030_53C1035, | |
150 | PCI_ANY_ID, PCI_ANY_ID }, | |
151 | {0} /* Terminating entry */ | |
152 | }; | |
153 | MODULE_DEVICE_TABLE(pci, mptspi_pci_table); | |
154 | ||
155 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
156 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
157 | /* | |
158 | * mptspi_probe - Installs scsi devices per bus. | |
159 | * @pdev: Pointer to pci_dev structure | |
160 | * | |
161 | * Returns 0 for success, non-zero for failure. | |
162 | * | |
163 | */ | |
164 | static int | |
165 | mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
166 | { | |
167 | struct Scsi_Host *sh; | |
168 | MPT_SCSI_HOST *hd; | |
169 | MPT_ADAPTER *ioc; | |
170 | unsigned long flags; | |
171 | int sz, ii; | |
172 | int numSGE = 0; | |
173 | int scale; | |
174 | int ioc_cap; | |
175 | u8 *mem; | |
176 | int error=0; | |
177 | int r; | |
178 | ||
179 | if ((r = mpt_attach(pdev,id)) != 0) | |
180 | return r; | |
181 | ||
182 | ioc = pci_get_drvdata(pdev); | |
d335cc38 MED |
183 | ioc->DoneCtx = mptspiDoneCtx; |
184 | ioc->TaskCtx = mptspiTaskCtx; | |
185 | ioc->InternalCtx = mptspiInternalCtx; | |
243eabcf MED |
186 | |
187 | /* Added sanity check on readiness of the MPT adapter. | |
188 | */ | |
189 | if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) { | |
190 | printk(MYIOC_s_WARN_FMT | |
191 | "Skipping because it's not operational!\n", | |
192 | ioc->name); | |
193 | return -ENODEV; | |
194 | } | |
195 | ||
196 | if (!ioc->active) { | |
197 | printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n", | |
198 | ioc->name); | |
199 | return -ENODEV; | |
200 | } | |
201 | ||
202 | /* Sanity check - ensure at least 1 port is INITIATOR capable | |
203 | */ | |
204 | ioc_cap = 0; | |
205 | for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) { | |
206 | if (ioc->pfacts[ii].ProtocolFlags & | |
207 | MPI_PORTFACTS_PROTOCOL_INITIATOR) | |
208 | ioc_cap ++; | |
209 | } | |
210 | ||
211 | if (!ioc_cap) { | |
212 | printk(MYIOC_s_WARN_FMT | |
213 | "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n", | |
214 | ioc->name, ioc); | |
215 | return -ENODEV; | |
216 | } | |
217 | ||
218 | sh = scsi_host_alloc(&mptspi_driver_template, sizeof(MPT_SCSI_HOST)); | |
219 | ||
220 | if (!sh) { | |
221 | printk(MYIOC_s_WARN_FMT | |
222 | "Unable to register controller with SCSI subsystem\n", | |
223 | ioc->name); | |
224 | return -1; | |
225 | } | |
226 | ||
227 | spin_lock_irqsave(&ioc->FreeQlock, flags); | |
228 | ||
229 | /* Attach the SCSI Host to the IOC structure | |
230 | */ | |
231 | ioc->sh = sh; | |
232 | ||
233 | sh->io_port = 0; | |
234 | sh->n_io_port = 0; | |
235 | sh->irq = 0; | |
236 | ||
237 | /* set 16 byte cdb's */ | |
238 | sh->max_cmd_len = 16; | |
239 | ||
240 | /* Yikes! This is important! | |
241 | * Otherwise, by default, linux | |
242 | * only scans target IDs 0-7! | |
243 | * pfactsN->MaxDevices unreliable | |
244 | * (not supported in early | |
245 | * versions of the FW). | |
246 | * max_id = 1 + actual max id, | |
247 | * max_lun = 1 + actual last lun, | |
248 | * see hosts.h :o( | |
249 | */ | |
250 | sh->max_id = MPT_MAX_SCSI_DEVICES; | |
251 | ||
252 | sh->max_lun = MPT_LAST_LUN + 1; | |
253 | sh->max_channel = 0; | |
254 | sh->this_id = ioc->pfacts[0].PortSCSIID; | |
255 | ||
256 | /* Required entry. | |
257 | */ | |
258 | sh->unique_id = ioc->id; | |
259 | ||
260 | /* Verify that we won't exceed the maximum | |
261 | * number of chain buffers | |
262 | * We can optimize: ZZ = req_sz/sizeof(SGE) | |
263 | * For 32bit SGE's: | |
264 | * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ | |
265 | * + (req_sz - 64)/sizeof(SGE) | |
266 | * A slightly different algorithm is required for | |
267 | * 64bit SGEs. | |
268 | */ | |
269 | scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32)); | |
270 | if (sizeof(dma_addr_t) == sizeof(u64)) { | |
271 | numSGE = (scale - 1) * | |
272 | (ioc->facts.MaxChainDepth-1) + scale + | |
273 | (ioc->req_sz - 60) / (sizeof(dma_addr_t) + | |
274 | sizeof(u32)); | |
275 | } else { | |
276 | numSGE = 1 + (scale - 1) * | |
277 | (ioc->facts.MaxChainDepth-1) + scale + | |
278 | (ioc->req_sz - 64) / (sizeof(dma_addr_t) + | |
279 | sizeof(u32)); | |
280 | } | |
281 | ||
282 | if (numSGE < sh->sg_tablesize) { | |
283 | /* Reset this value */ | |
284 | dprintk((MYIOC_s_INFO_FMT | |
285 | "Resetting sg_tablesize to %d from %d\n", | |
286 | ioc->name, numSGE, sh->sg_tablesize)); | |
287 | sh->sg_tablesize = numSGE; | |
288 | } | |
289 | ||
243eabcf MED |
290 | spin_unlock_irqrestore(&ioc->FreeQlock, flags); |
291 | ||
292 | hd = (MPT_SCSI_HOST *) sh->hostdata; | |
293 | hd->ioc = ioc; | |
294 | ||
295 | /* SCSI needs scsi_cmnd lookup table! | |
296 | * (with size equal to req_depth*PtrSz!) | |
297 | */ | |
298 | sz = ioc->req_depth * sizeof(void *); | |
299 | mem = kmalloc(sz, GFP_ATOMIC); | |
300 | if (mem == NULL) { | |
301 | error = -ENOMEM; | |
302 | goto mptspi_probe_failed; | |
303 | } | |
304 | ||
305 | memset(mem, 0, sz); | |
306 | hd->ScsiLookup = (struct scsi_cmnd **) mem; | |
307 | ||
308 | dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n", | |
309 | ioc->name, hd->ScsiLookup, sz)); | |
310 | ||
311 | /* Allocate memory for the device structures. | |
312 | * A non-Null pointer at an offset | |
313 | * indicates a device exists. | |
314 | * max_id = 1 + maximum id (hosts.h) | |
315 | */ | |
316 | sz = sh->max_id * sizeof(void *); | |
317 | mem = kmalloc(sz, GFP_ATOMIC); | |
318 | if (mem == NULL) { | |
319 | error = -ENOMEM; | |
320 | goto mptspi_probe_failed; | |
321 | } | |
322 | ||
323 | memset(mem, 0, sz); | |
324 | hd->Targets = (VirtDevice **) mem; | |
325 | ||
326 | dprintk((KERN_INFO | |
327 | " Targets @ %p, sz=%d\n", hd->Targets, sz)); | |
328 | ||
329 | /* Clear the TM flags | |
330 | */ | |
331 | hd->tmPending = 0; | |
332 | hd->tmState = TM_STATE_NONE; | |
333 | hd->resetPending = 0; | |
334 | hd->abortSCpnt = NULL; | |
335 | ||
336 | /* Clear the pointer used to store | |
337 | * single-threaded commands, i.e., those | |
338 | * issued during a bus scan, dv and | |
339 | * configuration pages. | |
340 | */ | |
341 | hd->cmdPtr = NULL; | |
342 | ||
343 | /* Initialize this SCSI Hosts' timers | |
344 | * To use, set the timer expires field | |
345 | * and add_timer | |
346 | */ | |
347 | init_timer(&hd->timer); | |
348 | hd->timer.data = (unsigned long) hd; | |
349 | hd->timer.function = mptscsih_timer_expired; | |
350 | ||
351 | ioc->spi_data.Saf_Te = mpt_saf_te; | |
352 | hd->mpt_pq_filter = mpt_pq_filter; | |
353 | ||
354 | #ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION | |
355 | if (ioc->spi_data.maxBusWidth > mpt_width) | |
356 | ioc->spi_data.maxBusWidth = mpt_width; | |
357 | if (ioc->spi_data.minSyncFactor < mpt_factor) | |
358 | ioc->spi_data.minSyncFactor = mpt_factor; | |
359 | if (ioc->spi_data.minSyncFactor == MPT_ASYNC) { | |
360 | ioc->spi_data.maxSyncOffset = 0; | |
361 | } | |
362 | ioc->spi_data.mpt_dv = mpt_dv; | |
363 | hd->negoNvram = 0; | |
364 | ||
365 | ddvprintk((MYIOC_s_INFO_FMT | |
366 | "dv %x width %x factor %x saf_te %x mpt_pq_filter %x\n", | |
367 | ioc->name, | |
368 | mpt_dv, | |
369 | mpt_width, | |
370 | mpt_factor, | |
371 | mpt_saf_te, | |
372 | mpt_pq_filter)); | |
373 | #else | |
374 | hd->negoNvram = MPT_SCSICFG_USE_NVRAM; | |
375 | ddvprintk((MYIOC_s_INFO_FMT | |
376 | "saf_te %x mpt_pq_filter %x\n", | |
377 | ioc->name, | |
378 | mpt_saf_te, | |
379 | mpt_pq_filter)); | |
380 | #endif | |
381 | ||
382 | ioc->spi_data.forceDv = 0; | |
383 | ioc->spi_data.noQas = 0; | |
384 | ||
385 | for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++) | |
386 | ioc->spi_data.dvStatus[ii] = | |
387 | MPT_SCSICFG_NEGOTIATE; | |
388 | ||
389 | for (ii=0; ii < MPT_MAX_SCSI_DEVICES; ii++) | |
390 | ioc->spi_data.dvStatus[ii] |= | |
391 | MPT_SCSICFG_DV_NOT_DONE; | |
392 | ||
393 | init_waitqueue_head(&hd->scandv_waitq); | |
394 | hd->scandv_wait_done = 0; | |
395 | hd->last_queue_full = 0; | |
396 | ||
243eabcf MED |
397 | error = scsi_add_host (sh, &ioc->pcidev->dev); |
398 | if(error) { | |
399 | dprintk((KERN_ERR MYNAM | |
400 | "scsi_add_host failed\n")); | |
401 | goto mptspi_probe_failed; | |
402 | } | |
403 | ||
404 | scsi_scan_host(sh); | |
405 | return 0; | |
406 | ||
407 | mptspi_probe_failed: | |
408 | ||
409 | mptscsih_remove(pdev); | |
410 | return error; | |
411 | } | |
412 | ||
413 | static struct pci_driver mptspi_driver = { | |
414 | .name = "mptspi", | |
415 | .id_table = mptspi_pci_table, | |
416 | .probe = mptspi_probe, | |
417 | .remove = __devexit_p(mptscsih_remove), | |
418 | .driver = { | |
419 | .shutdown = mptscsih_shutdown, | |
420 | }, | |
421 | #ifdef CONFIG_PM | |
422 | .suspend = mptscsih_suspend, | |
423 | .resume = mptscsih_resume, | |
424 | #endif | |
425 | }; | |
426 | ||
427 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
428 | /** | |
429 | * mptspi_init - Register MPT adapter(s) as SCSI host(s) with | |
430 | * linux scsi mid-layer. | |
431 | * | |
432 | * Returns 0 for success, non-zero for failure. | |
433 | */ | |
434 | static int __init | |
435 | mptspi_init(void) | |
436 | { | |
437 | ||
438 | show_mptmod_ver(my_NAME, my_VERSION); | |
439 | ||
440 | mptspiDoneCtx = mpt_register(mptscsih_io_done, MPTSPI_DRIVER); | |
441 | mptspiTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTSPI_DRIVER); | |
442 | mptspiInternalCtx = mpt_register(mptscsih_scandv_complete, MPTSPI_DRIVER); | |
443 | ||
444 | if (mpt_event_register(mptspiDoneCtx, mptscsih_event_process) == 0) { | |
445 | devtprintk((KERN_INFO MYNAM | |
446 | ": Registered for IOC event notifications\n")); | |
447 | } | |
448 | ||
449 | if (mpt_reset_register(mptspiDoneCtx, mptscsih_ioc_reset) == 0) { | |
450 | dprintk((KERN_INFO MYNAM | |
451 | ": Registered for IOC reset notifications\n")); | |
452 | } | |
453 | ||
454 | return pci_register_driver(&mptspi_driver); | |
455 | } | |
456 | ||
457 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
458 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
459 | /** | |
460 | * mptspi_exit - Unregisters MPT adapter(s) | |
461 | * | |
462 | */ | |
463 | static void __exit | |
464 | mptspi_exit(void) | |
465 | { | |
466 | pci_unregister_driver(&mptspi_driver); | |
467 | ||
468 | mpt_reset_deregister(mptspiDoneCtx); | |
469 | dprintk((KERN_INFO MYNAM | |
470 | ": Deregistered for IOC reset notifications\n")); | |
471 | ||
472 | mpt_event_deregister(mptspiDoneCtx); | |
473 | dprintk((KERN_INFO MYNAM | |
474 | ": Deregistered for IOC event notifications\n")); | |
475 | ||
476 | mpt_deregister(mptspiInternalCtx); | |
477 | mpt_deregister(mptspiTaskCtx); | |
478 | mpt_deregister(mptspiDoneCtx); | |
479 | } | |
480 | ||
481 | module_init(mptspi_init); | |
482 | module_exit(mptspi_exit); |