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2496af39 MED |
1 | /* |
2 | * linux/drivers/message/fusion/mptfc.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 | #include "linux_compat.h" /* linux-2.6 tweaks */ | |
47 | #include <linux/module.h> | |
48 | #include <linux/kernel.h> | |
49 | #include <linux/init.h> | |
50 | #include <linux/errno.h> | |
51 | #include <linux/kdev_t.h> | |
52 | #include <linux/blkdev.h> | |
53 | #include <linux/delay.h> /* for mdelay */ | |
54 | #include <linux/interrupt.h> /* needed for in_interrupt() proto */ | |
55 | #include <linux/reboot.h> /* notifier code */ | |
56 | #include <linux/sched.h> | |
57 | #include <linux/workqueue.h> | |
58 | ||
59 | #include <scsi/scsi.h> | |
60 | #include <scsi/scsi_cmnd.h> | |
61 | #include <scsi/scsi_device.h> | |
62 | #include <scsi/scsi_host.h> | |
63 | #include <scsi/scsi_tcq.h> | |
64 | ||
65 | #include "mptbase.h" | |
66 | #include "mptscsih.h" | |
67 | ||
68 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
69 | #define my_NAME "Fusion MPT FC Host driver" | |
70 | #define my_VERSION MPT_LINUX_VERSION_COMMON | |
71 | #define MYNAM "mptfc" | |
72 | ||
73 | MODULE_AUTHOR(MODULEAUTHOR); | |
74 | MODULE_DESCRIPTION(my_NAME); | |
75 | MODULE_LICENSE("GPL"); | |
76 | ||
77 | /* Command line args */ | |
78 | static int mpt_pq_filter = 0; | |
79 | module_param(mpt_pq_filter, int, 0); | |
80 | MODULE_PARM_DESC(mpt_pq_filter, " Enable peripheral qualifier filter: enable=1 (default=0)"); | |
81 | ||
82 | static int mptfcDoneCtx = -1; | |
83 | static int mptfcTaskCtx = -1; | |
84 | static int mptfcInternalCtx = -1; /* Used only for internal commands */ | |
85 | ||
86 | static struct device_attribute mptfc_queue_depth_attr = { | |
87 | .attr = { | |
88 | .name = "queue_depth", | |
89 | .mode = S_IWUSR, | |
90 | }, | |
91 | .store = mptscsih_store_queue_depth, | |
92 | }; | |
93 | ||
94 | static struct device_attribute *mptfc_dev_attrs[] = { | |
95 | &mptfc_queue_depth_attr, | |
96 | NULL, | |
97 | }; | |
98 | ||
99 | static struct scsi_host_template mptfc_driver_template = { | |
100 | .proc_name = "mptfc", | |
101 | .proc_info = mptscsih_proc_info, | |
102 | .name = "MPT FC Host", | |
103 | .info = mptscsih_info, | |
104 | .queuecommand = mptscsih_qcmd, | |
105 | .slave_alloc = mptscsih_slave_alloc, | |
106 | .slave_configure = mptscsih_slave_configure, | |
107 | .slave_destroy = mptscsih_slave_destroy, | |
108 | .eh_abort_handler = mptscsih_abort, | |
109 | .eh_device_reset_handler = mptscsih_dev_reset, | |
110 | .eh_bus_reset_handler = mptscsih_bus_reset, | |
111 | .eh_host_reset_handler = mptscsih_host_reset, | |
112 | .bios_param = mptscsih_bios_param, | |
113 | .can_queue = MPT_FC_CAN_QUEUE, | |
114 | .this_id = -1, | |
115 | .sg_tablesize = MPT_SCSI_SG_DEPTH, | |
116 | .max_sectors = 8192, | |
117 | .cmd_per_lun = 7, | |
118 | .use_clustering = ENABLE_CLUSTERING, | |
119 | .sdev_attrs = mptfc_dev_attrs, | |
120 | }; | |
121 | ||
122 | /**************************************************************************** | |
123 | * Supported hardware | |
124 | */ | |
125 | ||
126 | static struct pci_device_id mptfc_pci_table[] = { | |
127 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC909, | |
128 | PCI_ANY_ID, PCI_ANY_ID }, | |
129 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919, | |
130 | PCI_ANY_ID, PCI_ANY_ID }, | |
131 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929, | |
132 | PCI_ANY_ID, PCI_ANY_ID }, | |
133 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC919X, | |
134 | PCI_ANY_ID, PCI_ANY_ID }, | |
135 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC929X, | |
136 | PCI_ANY_ID, PCI_ANY_ID }, | |
3fadc59d MED |
137 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC939X, |
138 | PCI_ANY_ID, PCI_ANY_ID }, | |
139 | { PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FC949X, | |
140 | PCI_ANY_ID, PCI_ANY_ID }, | |
2496af39 MED |
141 | {0} /* Terminating entry */ |
142 | }; | |
143 | MODULE_DEVICE_TABLE(pci, mptfc_pci_table); | |
144 | ||
145 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
146 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
147 | /* | |
148 | * mptfc_probe - Installs scsi devices per bus. | |
149 | * @pdev: Pointer to pci_dev structure | |
150 | * | |
151 | * Returns 0 for success, non-zero for failure. | |
152 | * | |
153 | */ | |
154 | static int | |
155 | mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id) | |
156 | { | |
157 | struct Scsi_Host *sh; | |
158 | MPT_SCSI_HOST *hd; | |
159 | MPT_ADAPTER *ioc; | |
160 | unsigned long flags; | |
161 | int sz, ii; | |
162 | int numSGE = 0; | |
163 | int scale; | |
164 | int ioc_cap; | |
165 | u8 *mem; | |
166 | int error=0; | |
167 | int r; | |
168 | ||
169 | if ((r = mpt_attach(pdev,id)) != 0) | |
170 | return r; | |
171 | ||
172 | ioc = pci_get_drvdata(pdev); | |
d335cc38 MED |
173 | ioc->DoneCtx = mptfcDoneCtx; |
174 | ioc->TaskCtx = mptfcTaskCtx; | |
175 | ioc->InternalCtx = mptfcInternalCtx; | |
2496af39 MED |
176 | |
177 | /* Added sanity check on readiness of the MPT adapter. | |
178 | */ | |
179 | if (ioc->last_state != MPI_IOC_STATE_OPERATIONAL) { | |
180 | printk(MYIOC_s_WARN_FMT | |
181 | "Skipping because it's not operational!\n", | |
182 | ioc->name); | |
183 | return -ENODEV; | |
184 | } | |
185 | ||
186 | if (!ioc->active) { | |
187 | printk(MYIOC_s_WARN_FMT "Skipping because it's disabled!\n", | |
188 | ioc->name); | |
189 | return -ENODEV; | |
190 | } | |
191 | ||
192 | /* Sanity check - ensure at least 1 port is INITIATOR capable | |
193 | */ | |
194 | ioc_cap = 0; | |
195 | for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) { | |
196 | if (ioc->pfacts[ii].ProtocolFlags & | |
197 | MPI_PORTFACTS_PROTOCOL_INITIATOR) | |
198 | ioc_cap ++; | |
199 | } | |
200 | ||
201 | if (!ioc_cap) { | |
202 | printk(MYIOC_s_WARN_FMT | |
203 | "Skipping ioc=%p because SCSI Initiator mode is NOT enabled!\n", | |
204 | ioc->name, ioc); | |
205 | return -ENODEV; | |
206 | } | |
207 | ||
208 | sh = scsi_host_alloc(&mptfc_driver_template, sizeof(MPT_SCSI_HOST)); | |
209 | ||
210 | if (!sh) { | |
211 | printk(MYIOC_s_WARN_FMT | |
212 | "Unable to register controller with SCSI subsystem\n", | |
213 | ioc->name); | |
214 | return -1; | |
215 | } | |
216 | ||
217 | spin_lock_irqsave(&ioc->FreeQlock, flags); | |
218 | ||
219 | /* Attach the SCSI Host to the IOC structure | |
220 | */ | |
221 | ioc->sh = sh; | |
222 | ||
223 | sh->io_port = 0; | |
224 | sh->n_io_port = 0; | |
225 | sh->irq = 0; | |
226 | ||
227 | /* set 16 byte cdb's */ | |
228 | sh->max_cmd_len = 16; | |
229 | ||
230 | sh->max_id = MPT_MAX_FC_DEVICES<256 ? MPT_MAX_FC_DEVICES : 255; | |
231 | ||
232 | sh->max_lun = MPT_LAST_LUN + 1; | |
233 | sh->max_channel = 0; | |
234 | sh->this_id = ioc->pfacts[0].PortSCSIID; | |
235 | ||
236 | /* Required entry. | |
237 | */ | |
238 | sh->unique_id = ioc->id; | |
239 | ||
240 | /* Verify that we won't exceed the maximum | |
241 | * number of chain buffers | |
242 | * We can optimize: ZZ = req_sz/sizeof(SGE) | |
243 | * For 32bit SGE's: | |
244 | * numSGE = 1 + (ZZ-1)*(maxChain -1) + ZZ | |
245 | * + (req_sz - 64)/sizeof(SGE) | |
246 | * A slightly different algorithm is required for | |
247 | * 64bit SGEs. | |
248 | */ | |
249 | scale = ioc->req_sz/(sizeof(dma_addr_t) + sizeof(u32)); | |
250 | if (sizeof(dma_addr_t) == sizeof(u64)) { | |
251 | numSGE = (scale - 1) * | |
252 | (ioc->facts.MaxChainDepth-1) + scale + | |
253 | (ioc->req_sz - 60) / (sizeof(dma_addr_t) + | |
254 | sizeof(u32)); | |
255 | } else { | |
256 | numSGE = 1 + (scale - 1) * | |
257 | (ioc->facts.MaxChainDepth-1) + scale + | |
258 | (ioc->req_sz - 64) / (sizeof(dma_addr_t) + | |
259 | sizeof(u32)); | |
260 | } | |
261 | ||
262 | if (numSGE < sh->sg_tablesize) { | |
263 | /* Reset this value */ | |
264 | dprintk((MYIOC_s_INFO_FMT | |
265 | "Resetting sg_tablesize to %d from %d\n", | |
266 | ioc->name, numSGE, sh->sg_tablesize)); | |
267 | sh->sg_tablesize = numSGE; | |
268 | } | |
269 | ||
270 | /* Set the pci device pointer in Scsi_Host structure. | |
271 | */ | |
272 | scsi_set_device(sh, &ioc->pcidev->dev); | |
273 | ||
274 | spin_unlock_irqrestore(&ioc->FreeQlock, flags); | |
275 | ||
276 | hd = (MPT_SCSI_HOST *) sh->hostdata; | |
277 | hd->ioc = ioc; | |
278 | ||
279 | /* SCSI needs scsi_cmnd lookup table! | |
280 | * (with size equal to req_depth*PtrSz!) | |
281 | */ | |
282 | sz = ioc->req_depth * sizeof(void *); | |
283 | mem = kmalloc(sz, GFP_ATOMIC); | |
284 | if (mem == NULL) { | |
285 | error = -ENOMEM; | |
286 | goto mptfc_probe_failed; | |
287 | } | |
288 | ||
289 | memset(mem, 0, sz); | |
290 | hd->ScsiLookup = (struct scsi_cmnd **) mem; | |
291 | ||
292 | dprintk((MYIOC_s_INFO_FMT "ScsiLookup @ %p, sz=%d\n", | |
293 | ioc->name, hd->ScsiLookup, sz)); | |
294 | ||
295 | /* Allocate memory for the device structures. | |
296 | * A non-Null pointer at an offset | |
297 | * indicates a device exists. | |
298 | * max_id = 1 + maximum id (hosts.h) | |
299 | */ | |
300 | sz = sh->max_id * sizeof(void *); | |
301 | mem = kmalloc(sz, GFP_ATOMIC); | |
302 | if (mem == NULL) { | |
303 | error = -ENOMEM; | |
304 | goto mptfc_probe_failed; | |
305 | } | |
306 | ||
307 | memset(mem, 0, sz); | |
308 | hd->Targets = (VirtDevice **) mem; | |
309 | ||
310 | dprintk((KERN_INFO | |
311 | " Targets @ %p, sz=%d\n", hd->Targets, sz)); | |
312 | ||
313 | /* Clear the TM flags | |
314 | */ | |
315 | hd->tmPending = 0; | |
316 | hd->tmState = TM_STATE_NONE; | |
317 | hd->resetPending = 0; | |
318 | hd->abortSCpnt = NULL; | |
319 | ||
320 | /* Clear the pointer used to store | |
321 | * single-threaded commands, i.e., those | |
322 | * issued during a bus scan, dv and | |
323 | * configuration pages. | |
324 | */ | |
325 | hd->cmdPtr = NULL; | |
326 | ||
327 | /* Initialize this SCSI Hosts' timers | |
328 | * To use, set the timer expires field | |
329 | * and add_timer | |
330 | */ | |
331 | init_timer(&hd->timer); | |
332 | hd->timer.data = (unsigned long) hd; | |
333 | hd->timer.function = mptscsih_timer_expired; | |
334 | ||
2496af39 MED |
335 | hd->mpt_pq_filter = mpt_pq_filter; |
336 | ||
337 | ddvprintk((MYIOC_s_INFO_FMT | |
338 | "mpt_pq_filter %x\n", | |
339 | ioc->name, | |
340 | mpt_pq_filter)); | |
341 | ||
342 | init_waitqueue_head(&hd->scandv_waitq); | |
343 | hd->scandv_wait_done = 0; | |
344 | hd->last_queue_full = 0; | |
345 | ||
346 | error = scsi_add_host (sh, &ioc->pcidev->dev); | |
347 | if(error) { | |
348 | dprintk((KERN_ERR MYNAM | |
349 | "scsi_add_host failed\n")); | |
350 | goto mptfc_probe_failed; | |
351 | } | |
352 | ||
353 | scsi_scan_host(sh); | |
354 | return 0; | |
355 | ||
356 | mptfc_probe_failed: | |
357 | ||
358 | mptscsih_remove(pdev); | |
359 | return error; | |
360 | } | |
361 | ||
362 | static struct pci_driver mptfc_driver = { | |
363 | .name = "mptfc", | |
364 | .id_table = mptfc_pci_table, | |
365 | .probe = mptfc_probe, | |
366 | .remove = __devexit_p(mptscsih_remove), | |
d18c3db5 | 367 | .shutdown = mptscsih_shutdown, |
2496af39 MED |
368 | #ifdef CONFIG_PM |
369 | .suspend = mptscsih_suspend, | |
370 | .resume = mptscsih_resume, | |
371 | #endif | |
372 | }; | |
373 | ||
374 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
375 | /** | |
376 | * mptfc_init - Register MPT adapter(s) as SCSI host(s) with | |
377 | * linux scsi mid-layer. | |
378 | * | |
379 | * Returns 0 for success, non-zero for failure. | |
380 | */ | |
381 | static int __init | |
382 | mptfc_init(void) | |
383 | { | |
384 | ||
385 | show_mptmod_ver(my_NAME, my_VERSION); | |
386 | ||
387 | mptfcDoneCtx = mpt_register(mptscsih_io_done, MPTFC_DRIVER); | |
388 | mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER); | |
389 | mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER); | |
390 | ||
391 | if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) { | |
392 | devtprintk((KERN_INFO MYNAM | |
393 | ": Registered for IOC event notifications\n")); | |
394 | } | |
395 | ||
396 | if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) { | |
397 | dprintk((KERN_INFO MYNAM | |
398 | ": Registered for IOC reset notifications\n")); | |
399 | } | |
400 | ||
401 | return pci_register_driver(&mptfc_driver); | |
402 | } | |
403 | ||
404 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
405 | /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/ | |
406 | /** | |
407 | * mptfc_exit - Unregisters MPT adapter(s) | |
408 | * | |
409 | */ | |
410 | static void __exit | |
411 | mptfc_exit(void) | |
412 | { | |
413 | pci_unregister_driver(&mptfc_driver); | |
414 | ||
415 | mpt_reset_deregister(mptfcDoneCtx); | |
416 | dprintk((KERN_INFO MYNAM | |
417 | ": Deregistered for IOC reset notifications\n")); | |
418 | ||
419 | mpt_event_deregister(mptfcDoneCtx); | |
420 | dprintk((KERN_INFO MYNAM | |
421 | ": Deregistered for IOC event notifications\n")); | |
422 | ||
423 | mpt_deregister(mptfcInternalCtx); | |
424 | mpt_deregister(mptfcTaskCtx); | |
425 | mpt_deregister(mptfcDoneCtx); | |
426 | } | |
427 | ||
428 | module_init(mptfc_init); | |
429 | module_exit(mptfc_exit); |