1 /*
2  *  linux/drivers/message/fusion/mptscsih.c
3  *      For use with LSI PCI chip/adapter(s)
4  *      running LSI Fusion MPT (Message Passing Technology) firmware.
5  *
6  *  Copyright (c) 1999-2008 LSI Corporation
7  *  (mailto:DL-MPTFusionLinux@lsi.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/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/workqueue.h>
57 
58 #include <scsi/scsi.h>
59 #include <scsi/scsi_cmnd.h>
60 #include <scsi/scsi_device.h>
61 #include <scsi/scsi_host.h>
62 #include <scsi/scsi_tcq.h>
63 #include <scsi/scsi_dbg.h>
64 
65 #include "mptbase.h"
66 #include "mptscsih.h"
67 #include "lsi/mpi_log_sas.h"
68 
69 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
70 #define my_NAME		"Fusion MPT SCSI Host driver"
71 #define my_VERSION	MPT_LINUX_VERSION_COMMON
72 #define MYNAM		"mptscsih"
73 
74 MODULE_AUTHOR(MODULEAUTHOR);
75 MODULE_DESCRIPTION(my_NAME);
76 MODULE_LICENSE("GPL");
77 MODULE_VERSION(my_VERSION);
78 
79 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
80 /*
81  *  Other private/forward protos...
82  */
83 static struct scsi_cmnd * mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i);
84 static struct scsi_cmnd * mptscsih_getclear_scsi_lookup(MPT_ADAPTER *ioc, int i);
85 static void	mptscsih_set_scsi_lookup(MPT_ADAPTER *ioc, int i, struct scsi_cmnd *scmd);
86 static int	SCPNT_TO_LOOKUP_IDX(MPT_ADAPTER *ioc, struct scsi_cmnd *scmd);
87 int		mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
88 static void	mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSIIORequest_t *pScsiReq);
89 int		mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
90 
91 static int	mptscsih_AddSGE(MPT_ADAPTER *ioc, struct scsi_cmnd *SCpnt,
92 				 SCSIIORequest_t *pReq, int req_idx);
93 static void	mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx);
94 static void	mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply);
95 static int	mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd);
96 static int	mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout );
97 
98 static int	mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun, int ctx2abort, ulong timeout);
99 
100 int		mptscsih_ioc_reset(MPT_ADAPTER *ioc, int post_reset);
101 int		mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply);
102 
103 int		mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *r);
104 static int	mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *iocmd);
105 static void	mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice);
106 
107 void 		mptscsih_remove(struct pci_dev *);
108 void 		mptscsih_shutdown(struct pci_dev *);
109 #ifdef CONFIG_PM
110 int 		mptscsih_suspend(struct pci_dev *pdev, pm_message_t state);
111 int 		mptscsih_resume(struct pci_dev *pdev);
112 #endif
113 
114 #define SNS_LEN(scp)	SCSI_SENSE_BUFFERSIZE
115 
116 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
117 /**
118  *	mptscsih_add_sge - Place a simple SGE at address pAddr.
119  *	@pAddr: virtual address for SGE
120  *	@flagslength: SGE flags and data transfer length
121  *	@dma_addr: Physical address
122  *
123  *	This routine places a MPT request frame back on the MPT adapter's
124  *	FreeQ.
125  */
126 static inline void
127 mptscsih_add_sge(char *pAddr, u32 flagslength, dma_addr_t dma_addr)
128 {
129 	if (sizeof(dma_addr_t) == sizeof(u64)) {
130 		SGESimple64_t *pSge = (SGESimple64_t *) pAddr;
131 		u32 tmp = dma_addr & 0xFFFFFFFF;
132 
133 		pSge->FlagsLength = cpu_to_le32(flagslength);
134 		pSge->Address.Low = cpu_to_le32(tmp);
135 		tmp = (u32) ((u64)dma_addr >> 32);
136 		pSge->Address.High = cpu_to_le32(tmp);
137 
138 	} else {
139 		SGESimple32_t *pSge = (SGESimple32_t *) pAddr;
140 		pSge->FlagsLength = cpu_to_le32(flagslength);
141 		pSge->Address = cpu_to_le32(dma_addr);
142 	}
143 } /* mptscsih_add_sge() */
144 
145 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
146 /**
147  *	mptscsih_add_chain - Place a chain SGE at address pAddr.
148  *	@pAddr: virtual address for SGE
149  *	@next: nextChainOffset value (u32's)
150  *	@length: length of next SGL segment
151  *	@dma_addr: Physical address
152  *
153  *	This routine places a MPT request frame back on the MPT adapter's
154  *	FreeQ.
155  */
156 static inline void
157 mptscsih_add_chain(char *pAddr, u8 next, u16 length, dma_addr_t dma_addr)
158 {
159 	if (sizeof(dma_addr_t) == sizeof(u64)) {
160 		SGEChain64_t *pChain = (SGEChain64_t *) pAddr;
161 		u32 tmp = dma_addr & 0xFFFFFFFF;
162 
163 		pChain->Length = cpu_to_le16(length);
164 		pChain->Flags = MPI_SGE_FLAGS_CHAIN_ELEMENT | mpt_addr_size();
165 
166 		pChain->NextChainOffset = next;
167 
168 		pChain->Address.Low = cpu_to_le32(tmp);
169 		tmp = (u32) ((u64)dma_addr >> 32);
170 		pChain->Address.High = cpu_to_le32(tmp);
171 	} else {
172 		SGEChain32_t *pChain = (SGEChain32_t *) pAddr;
173 		pChain->Length = cpu_to_le16(length);
174 		pChain->Flags = MPI_SGE_FLAGS_CHAIN_ELEMENT | mpt_addr_size();
175 		pChain->NextChainOffset = next;
176 		pChain->Address = cpu_to_le32(dma_addr);
177 	}
178 } /* mptscsih_add_chain() */
179 
180 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
181 /*
182  *	mptscsih_getFreeChainBuffer - Function to get a free chain
183  *	from the MPT_SCSI_HOST FreeChainQ.
184  *	@ioc: Pointer to MPT_ADAPTER structure
185  *	@req_idx: Index of the SCSI IO request frame. (output)
186  *
187  *	return SUCCESS or FAILED
188  */
189 static inline int
190 mptscsih_getFreeChainBuffer(MPT_ADAPTER *ioc, int *retIndex)
191 {
192 	MPT_FRAME_HDR *chainBuf;
193 	unsigned long flags;
194 	int rc;
195 	int chain_idx;
196 
197 	dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "getFreeChainBuffer called\n",
198 	    ioc->name));
199 	spin_lock_irqsave(&ioc->FreeQlock, flags);
200 	if (!list_empty(&ioc->FreeChainQ)) {
201 		int offset;
202 
203 		chainBuf = list_entry(ioc->FreeChainQ.next, MPT_FRAME_HDR,
204 				u.frame.linkage.list);
205 		list_del(&chainBuf->u.frame.linkage.list);
206 		offset = (u8 *)chainBuf - (u8 *)ioc->ChainBuffer;
207 		chain_idx = offset / ioc->req_sz;
208 		rc = SUCCESS;
209 		dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT
210 		    "getFreeChainBuffer chainBuf=%p ChainBuffer=%p offset=%d chain_idx=%d\n",
211 		    ioc->name, chainBuf, ioc->ChainBuffer, offset, chain_idx));
212 	} else {
213 		rc = FAILED;
214 		chain_idx = MPT_HOST_NO_CHAIN;
215 		dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "getFreeChainBuffer failed\n",
216 		    ioc->name));
217 	}
218 	spin_unlock_irqrestore(&ioc->FreeQlock, flags);
219 
220 	*retIndex = chain_idx;
221 	return rc;
222 } /* mptscsih_getFreeChainBuffer() */
223 
224 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
225 /*
226  *	mptscsih_AddSGE - Add a SGE (plus chain buffers) to the
227  *	SCSIIORequest_t Message Frame.
228  *	@ioc: Pointer to MPT_ADAPTER structure
229  *	@SCpnt: Pointer to scsi_cmnd structure
230  *	@pReq: Pointer to SCSIIORequest_t structure
231  *
232  *	Returns ...
233  */
234 static int
235 mptscsih_AddSGE(MPT_ADAPTER *ioc, struct scsi_cmnd *SCpnt,
236 		SCSIIORequest_t *pReq, int req_idx)
237 {
238 	char 	*psge;
239 	char	*chainSge;
240 	struct scatterlist *sg;
241 	int	 frm_sz;
242 	int	 sges_left, sg_done;
243 	int	 chain_idx = MPT_HOST_NO_CHAIN;
244 	int	 sgeOffset;
245 	int	 numSgeSlots, numSgeThisFrame;
246 	u32	 sgflags, sgdir, thisxfer = 0;
247 	int	 chain_dma_off = 0;
248 	int	 newIndex;
249 	int	 ii;
250 	dma_addr_t v2;
251 	u32	RequestNB;
252 
253 	sgdir = le32_to_cpu(pReq->Control) & MPI_SCSIIO_CONTROL_DATADIRECTION_MASK;
254 	if (sgdir == MPI_SCSIIO_CONTROL_WRITE)  {
255 		sgdir = MPT_TRANSFER_HOST_TO_IOC;
256 	} else {
257 		sgdir = MPT_TRANSFER_IOC_TO_HOST;
258 	}
259 
260 	psge = (char *) &pReq->SGL;
261 	frm_sz = ioc->req_sz;
262 
263 	/* Map the data portion, if any.
264 	 * sges_left  = 0 if no data transfer.
265 	 */
266 	sges_left = scsi_dma_map(SCpnt);
267 	if (sges_left < 0)
268 		return FAILED;
269 
270 	/* Handle the SG case.
271 	 */
272 	sg = scsi_sglist(SCpnt);
273 	sg_done  = 0;
274 	sgeOffset = sizeof(SCSIIORequest_t) - sizeof(SGE_IO_UNION);
275 	chainSge = NULL;
276 
277 	/* Prior to entering this loop - the following must be set
278 	 * current MF:  sgeOffset (bytes)
279 	 *              chainSge (Null if original MF is not a chain buffer)
280 	 *              sg_done (num SGE done for this MF)
281 	 */
282 
283 nextSGEset:
284 	numSgeSlots = ((frm_sz - sgeOffset) / (sizeof(u32) + sizeof(dma_addr_t)) );
285 	numSgeThisFrame = (sges_left < numSgeSlots) ? sges_left : numSgeSlots;
286 
287 	sgflags = MPT_SGE_FLAGS_SIMPLE_ELEMENT | MPT_SGE_FLAGS_ADDRESSING | sgdir;
288 
289 	/* Get first (num - 1) SG elements
290 	 * Skip any SG entries with a length of 0
291 	 * NOTE: at finish, sg and psge pointed to NEXT data/location positions
292 	 */
293 	for (ii=0; ii < (numSgeThisFrame-1); ii++) {
294 		thisxfer = sg_dma_len(sg);
295 		if (thisxfer == 0) {
296 			sg = sg_next(sg); /* Get next SG element from the OS */
297 			sg_done++;
298 			continue;
299 		}
300 
301 		v2 = sg_dma_address(sg);
302 		mptscsih_add_sge(psge, sgflags | thisxfer, v2);
303 
304 		sg = sg_next(sg);	/* Get next SG element from the OS */
305 		psge += (sizeof(u32) + sizeof(dma_addr_t));
306 		sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
307 		sg_done++;
308 	}
309 
310 	if (numSgeThisFrame == sges_left) {
311 		/* Add last element, end of buffer and end of list flags.
312 		 */
313 		sgflags |= MPT_SGE_FLAGS_LAST_ELEMENT |
314 				MPT_SGE_FLAGS_END_OF_BUFFER |
315 				MPT_SGE_FLAGS_END_OF_LIST;
316 
317 		/* Add last SGE and set termination flags.
318 		 * Note: Last SGE may have a length of 0 - which should be ok.
319 		 */
320 		thisxfer = sg_dma_len(sg);
321 
322 		v2 = sg_dma_address(sg);
323 		mptscsih_add_sge(psge, sgflags | thisxfer, v2);
324 		/*
325 		sg = sg_next(sg);
326 		psge += (sizeof(u32) + sizeof(dma_addr_t));
327 		*/
328 		sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
329 		sg_done++;
330 
331 		if (chainSge) {
332 			/* The current buffer is a chain buffer,
333 			 * but there is not another one.
334 			 * Update the chain element
335 			 * Offset and Length fields.
336 			 */
337 			mptscsih_add_chain((char *)chainSge, 0, sgeOffset, ioc->ChainBufferDMA + chain_dma_off);
338 		} else {
339 			/* The current buffer is the original MF
340 			 * and there is no Chain buffer.
341 			 */
342 			pReq->ChainOffset = 0;
343 			RequestNB = (((sgeOffset - 1) >> ioc->NBShiftFactor)  + 1) & 0x03;
344 			dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT
345 			    "Single Buffer RequestNB=%x, sgeOffset=%d\n", ioc->name, RequestNB, sgeOffset));
346 			ioc->RequestNB[req_idx] = RequestNB;
347 		}
348 	} else {
349 		/* At least one chain buffer is needed.
350 		 * Complete the first MF
351 		 *  - last SGE element, set the LastElement bit
352 		 *  - set ChainOffset (words) for orig MF
353 		 *             (OR finish previous MF chain buffer)
354 		 *  - update MFStructPtr ChainIndex
355 		 *  - Populate chain element
356 		 * Also
357 		 * Loop until done.
358 		 */
359 
360 		dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "SG: Chain Required! sg done %d\n",
361 				ioc->name, sg_done));
362 
363 		/* Set LAST_ELEMENT flag for last non-chain element
364 		 * in the buffer. Since psge points at the NEXT
365 		 * SGE element, go back one SGE element, update the flags
366 		 * and reset the pointer. (Note: sgflags & thisxfer are already
367 		 * set properly).
368 		 */
369 		if (sg_done) {
370 			u32 *ptmp = (u32 *) (psge - (sizeof(u32) + sizeof(dma_addr_t)));
371 			sgflags = le32_to_cpu(*ptmp);
372 			sgflags |= MPT_SGE_FLAGS_LAST_ELEMENT;
373 			*ptmp = cpu_to_le32(sgflags);
374 		}
375 
376 		if (chainSge) {
377 			/* The current buffer is a chain buffer.
378 			 * chainSge points to the previous Chain Element.
379 			 * Update its chain element Offset and Length (must
380 			 * include chain element size) fields.
381 			 * Old chain element is now complete.
382 			 */
383 			u8 nextChain = (u8) (sgeOffset >> 2);
384 			sgeOffset += (sizeof(u32) + sizeof(dma_addr_t));
385 			mptscsih_add_chain((char *)chainSge, nextChain, sgeOffset, ioc->ChainBufferDMA + chain_dma_off);
386 		} else {
387 			/* The original MF buffer requires a chain buffer -
388 			 * set the offset.
389 			 * Last element in this MF is a chain element.
390 			 */
391 			pReq->ChainOffset = (u8) (sgeOffset >> 2);
392 			RequestNB = (((sgeOffset - 1) >> ioc->NBShiftFactor)  + 1) & 0x03;
393 			dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Chain Buffer Needed, RequestNB=%x sgeOffset=%d\n", ioc->name, RequestNB, sgeOffset));
394 			ioc->RequestNB[req_idx] = RequestNB;
395 		}
396 
397 		sges_left -= sg_done;
398 
399 
400 		/* NOTE: psge points to the beginning of the chain element
401 		 * in current buffer. Get a chain buffer.
402 		 */
403 		if ((mptscsih_getFreeChainBuffer(ioc, &newIndex)) == FAILED) {
404 			dfailprintk(ioc, printk(MYIOC_s_DEBUG_FMT
405 			    "getFreeChainBuffer FAILED SCSI cmd=%02x (%p)\n",
406  			    ioc->name, pReq->CDB[0], SCpnt));
407 			return FAILED;
408 		}
409 
410 		/* Update the tracking arrays.
411 		 * If chainSge == NULL, update ReqToChain, else ChainToChain
412 		 */
413 		if (chainSge) {
414 			ioc->ChainToChain[chain_idx] = newIndex;
415 		} else {
416 			ioc->ReqToChain[req_idx] = newIndex;
417 		}
418 		chain_idx = newIndex;
419 		chain_dma_off = ioc->req_sz * chain_idx;
420 
421 		/* Populate the chainSGE for the current buffer.
422 		 * - Set chain buffer pointer to psge and fill
423 		 *   out the Address and Flags fields.
424 		 */
425 		chainSge = (char *) psge;
426 		dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "  Current buff @ %p (index 0x%x)",
427 		    ioc->name, psge, req_idx));
428 
429 		/* Start the SGE for the next buffer
430 		 */
431 		psge = (char *) (ioc->ChainBuffer + chain_dma_off);
432 		sgeOffset = 0;
433 		sg_done = 0;
434 
435 		dsgprintk(ioc, printk(MYIOC_s_DEBUG_FMT "  Chain buff @ %p (index 0x%x)\n",
436 		    ioc->name, psge, chain_idx));
437 
438 		/* Start the SGE for the next buffer
439 		 */
440 
441 		goto nextSGEset;
442 	}
443 
444 	return SUCCESS;
445 } /* mptscsih_AddSGE() */
446 
447 static void
448 mptscsih_issue_sep_command(MPT_ADAPTER *ioc, VirtTarget *vtarget,
449     U32 SlotStatus)
450 {
451 	MPT_FRAME_HDR *mf;
452 	SEPRequest_t 	 *SEPMsg;
453 
454 	if (ioc->bus_type != SAS)
455 		return;
456 
457 	/* Not supported for hidden raid components
458 	 */
459 	if (vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT)
460 		return;
461 
462 	if ((mf = mpt_get_msg_frame(ioc->InternalCtx, ioc)) == NULL) {
463 		dfailprintk(ioc, printk(MYIOC_s_WARN_FMT "%s: no msg frames!!\n",
464 		    ioc->name,__func__));
465 		return;
466 	}
467 
468 	SEPMsg = (SEPRequest_t *)mf;
469 	SEPMsg->Function = MPI_FUNCTION_SCSI_ENCLOSURE_PROCESSOR;
470 	SEPMsg->Bus = vtarget->channel;
471 	SEPMsg->TargetID = vtarget->id;
472 	SEPMsg->Action = MPI_SEP_REQ_ACTION_WRITE_STATUS;
473 	SEPMsg->SlotStatus = SlotStatus;
474 	devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT
475 	    "Sending SEP cmd=%x channel=%d id=%d\n",
476 	    ioc->name, SlotStatus, SEPMsg->Bus, SEPMsg->TargetID));
477 	mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
478 }
479 
480 #ifdef CONFIG_FUSION_LOGGING
481 /**
482  *	mptscsih_info_scsiio - debug print info on reply frame
483  *	@ioc: Pointer to MPT_ADAPTER structure
484  *	@sc: original scsi cmnd pointer
485  *	@pScsiReply: Pointer to MPT reply frame
486  *
487  *	MPT_DEBUG_REPLY needs to be enabled to obtain this info
488  *
489  *	Refer to lsi/mpi.h.
490  **/
491 static void
492 mptscsih_info_scsiio(MPT_ADAPTER *ioc, struct scsi_cmnd *sc, SCSIIOReply_t * pScsiReply)
493 {
494 	char	*desc = NULL;
495 	char	*desc1 = NULL;
496 	u16	ioc_status;
497 	u8	skey, asc, ascq;
498 
499 	ioc_status = le16_to_cpu(pScsiReply->IOCStatus) & MPI_IOCSTATUS_MASK;
500 
501 	switch (ioc_status) {
502 
503 	case MPI_IOCSTATUS_SUCCESS:
504 		desc = "success";
505 		break;
506 	case MPI_IOCSTATUS_SCSI_INVALID_BUS:
507 		desc = "invalid bus";
508 		break;
509 	case MPI_IOCSTATUS_SCSI_INVALID_TARGETID:
510 		desc = "invalid target_id";
511 		break;
512 	case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:
513 		desc = "device not there";
514 		break;
515 	case MPI_IOCSTATUS_SCSI_DATA_OVERRUN:
516 		desc = "data overrun";
517 		break;
518 	case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:
519 		desc = "data underrun";
520 		break;
521 	case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:
522 		desc = "I/O data error";
523 		break;
524 	case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:
525 		desc = "protocol error";
526 		break;
527 	case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:
528 		desc = "task terminated";
529 		break;
530 	case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:
531 		desc = "residual mismatch";
532 		break;
533 	case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED:
534 		desc = "task management failed";
535 		break;
536 	case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:
537 		desc = "IOC terminated";
538 		break;
539 	case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:
540 		desc = "ext terminated";
541 		break;
542 	default:
543 		desc = "";
544 		break;
545 	}
546 
547 	switch (pScsiReply->SCSIStatus)
548 	{
549 
550 	case MPI_SCSI_STATUS_SUCCESS:
551 		desc1 = "success";
552 		break;
553 	case MPI_SCSI_STATUS_CHECK_CONDITION:
554 		desc1 = "check condition";
555 		break;
556 	case MPI_SCSI_STATUS_CONDITION_MET:
557 		desc1 = "condition met";
558 		break;
559 	case MPI_SCSI_STATUS_BUSY:
560 		desc1 = "busy";
561 		break;
562 	case MPI_SCSI_STATUS_INTERMEDIATE:
563 		desc1 = "intermediate";
564 		break;
565 	case MPI_SCSI_STATUS_INTERMEDIATE_CONDMET:
566 		desc1 = "intermediate condmet";
567 		break;
568 	case MPI_SCSI_STATUS_RESERVATION_CONFLICT:
569 		desc1 = "reservation conflict";
570 		break;
571 	case MPI_SCSI_STATUS_COMMAND_TERMINATED:
572 		desc1 = "command terminated";
573 		break;
574 	case MPI_SCSI_STATUS_TASK_SET_FULL:
575 		desc1 = "task set full";
576 		break;
577 	case MPI_SCSI_STATUS_ACA_ACTIVE:
578 		desc1 = "aca active";
579 		break;
580 	case MPI_SCSI_STATUS_FCPEXT_DEVICE_LOGGED_OUT:
581 		desc1 = "fcpext device logged out";
582 		break;
583 	case MPI_SCSI_STATUS_FCPEXT_NO_LINK:
584 		desc1 = "fcpext no link";
585 		break;
586 	case MPI_SCSI_STATUS_FCPEXT_UNASSIGNED:
587 		desc1 = "fcpext unassigned";
588 		break;
589 	default:
590 		desc1 = "";
591 		break;
592 	}
593 
594 	scsi_print_command(sc);
595 	printk(MYIOC_s_DEBUG_FMT "\tfw_channel = %d, fw_id = %d\n",
596 	    ioc->name, pScsiReply->Bus, pScsiReply->TargetID);
597 	printk(MYIOC_s_DEBUG_FMT "\trequest_len = %d, underflow = %d, "
598 	    "resid = %d\n", ioc->name, scsi_bufflen(sc), sc->underflow,
599 	    scsi_get_resid(sc));
600 	printk(MYIOC_s_DEBUG_FMT "\ttag = %d, transfer_count = %d, "
601 	    "sc->result = %08X\n", ioc->name, le16_to_cpu(pScsiReply->TaskTag),
602 	    le32_to_cpu(pScsiReply->TransferCount), sc->result);
603 	printk(MYIOC_s_DEBUG_FMT "\tiocstatus = %s (0x%04x), "
604 	    "scsi_status = %s (0x%02x), scsi_state = (0x%02x)\n",
605 	    ioc->name, desc, ioc_status, desc1, pScsiReply->SCSIStatus,
606 	    pScsiReply->SCSIState);
607 
608 	if (pScsiReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_VALID) {
609 		skey = sc->sense_buffer[2] & 0x0F;
610 		asc = sc->sense_buffer[12];
611 		ascq = sc->sense_buffer[13];
612 
613 		printk(MYIOC_s_DEBUG_FMT "\t[sense_key,asc,ascq]: "
614 		    "[0x%02x,0x%02x,0x%02x]\n", ioc->name, skey, asc, ascq);
615 	}
616 
617 	/*
618 	 *  Look for + dump FCP ResponseInfo[]!
619 	 */
620 	if (pScsiReply->SCSIState & MPI_SCSI_STATE_RESPONSE_INFO_VALID &&
621 	    pScsiReply->ResponseInfo)
622 		printk(MYIOC_s_DEBUG_FMT "response_info = %08xh\n",
623 		    ioc->name, le32_to_cpu(pScsiReply->ResponseInfo));
624 }
625 #endif
626 
627 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
628 /*
629  *	mptscsih_io_done - Main SCSI IO callback routine registered to
630  *	Fusion MPT (base) driver
631  *	@ioc: Pointer to MPT_ADAPTER structure
632  *	@mf: Pointer to original MPT request frame
633  *	@r: Pointer to MPT reply frame (NULL if TurboReply)
634  *
635  *	This routine is called from mpt.c::mpt_interrupt() at the completion
636  *	of any SCSI IO request.
637  *	This routine is registered with the Fusion MPT (base) driver at driver
638  *	load/init time via the mpt_register() API call.
639  *
640  *	Returns 1 indicating alloc'd request frame ptr should be freed.
641  */
642 int
643 mptscsih_io_done(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
644 {
645 	struct scsi_cmnd	*sc;
646 	MPT_SCSI_HOST	*hd;
647 	SCSIIORequest_t	*pScsiReq;
648 	SCSIIOReply_t	*pScsiReply;
649 	u16		 req_idx, req_idx_MR;
650 	VirtDevice	 *vdevice;
651 	VirtTarget	 *vtarget;
652 
653 	hd = shost_priv(ioc->sh);
654 	req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
655 	req_idx_MR = (mr != NULL) ?
656 	    le16_to_cpu(mr->u.frame.hwhdr.msgctxu.fld.req_idx) : req_idx;
657 	if ((req_idx != req_idx_MR) ||
658 	    (mf->u.frame.linkage.arg1 == 0xdeadbeaf)) {
659 		printk(MYIOC_s_ERR_FMT "Received a mf that was already freed\n",
660 		    ioc->name);
661 		printk (MYIOC_s_ERR_FMT
662 		    "req_idx=%x req_idx_MR=%x mf=%p mr=%p sc=%p\n",
663 		    ioc->name, req_idx, req_idx_MR, mf, mr,
664 		    mptscsih_get_scsi_lookup(ioc, req_idx_MR));
665 		return 0;
666 	}
667 
668 	sc = mptscsih_getclear_scsi_lookup(ioc, req_idx);
669 	if (sc == NULL) {
670 		MPIHeader_t *hdr = (MPIHeader_t *)mf;
671 
672 		/* Remark: writeSDP1 will use the ScsiDoneCtx
673 		 * If a SCSI I/O cmd, device disabled by OS and
674 		 * completion done. Cannot touch sc struct. Just free mem.
675 		 */
676 		if (hdr->Function == MPI_FUNCTION_SCSI_IO_REQUEST)
677 			printk(MYIOC_s_ERR_FMT "NULL ScsiCmd ptr!\n",
678 			ioc->name);
679 
680 		mptscsih_freeChainBuffers(ioc, req_idx);
681 		return 1;
682 	}
683 
684 	if ((unsigned char *)mf != sc->host_scribble) {
685 		mptscsih_freeChainBuffers(ioc, req_idx);
686 		return 1;
687 	}
688 
689 	sc->host_scribble = NULL;
690 	sc->result = DID_OK << 16;		/* Set default reply as OK */
691 	pScsiReq = (SCSIIORequest_t *) mf;
692 	pScsiReply = (SCSIIOReply_t *) mr;
693 
694 	if((ioc->facts.MsgVersion >= MPI_VERSION_01_05) && pScsiReply){
695 		dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT
696 			"ScsiDone (mf=%p,mr=%p,sc=%p,idx=%d,task-tag=%d)\n",
697 			ioc->name, mf, mr, sc, req_idx, pScsiReply->TaskTag));
698 	}else{
699 		dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT
700 			"ScsiDone (mf=%p,mr=%p,sc=%p,idx=%d)\n",
701 			ioc->name, mf, mr, sc, req_idx));
702 	}
703 
704 	if (pScsiReply == NULL) {
705 		/* special context reply handling */
706 		;
707 	} else {
708 		u32	 xfer_cnt;
709 		u16	 status;
710 		u8	 scsi_state, scsi_status;
711 		u32	 log_info;
712 
713 		status = le16_to_cpu(pScsiReply->IOCStatus) & MPI_IOCSTATUS_MASK;
714 		scsi_state = pScsiReply->SCSIState;
715 		scsi_status = pScsiReply->SCSIStatus;
716 		xfer_cnt = le32_to_cpu(pScsiReply->TransferCount);
717 		scsi_set_resid(sc, scsi_bufflen(sc) - xfer_cnt);
718 		log_info = le32_to_cpu(pScsiReply->IOCLogInfo);
719 
720 		/*
721 		 *  if we get a data underrun indication, yet no data was
722 		 *  transferred and the SCSI status indicates that the
723 		 *  command was never started, change the data underrun
724 		 *  to success
725 		 */
726 		if (status == MPI_IOCSTATUS_SCSI_DATA_UNDERRUN && xfer_cnt == 0 &&
727 		    (scsi_status == MPI_SCSI_STATUS_BUSY ||
728 		     scsi_status == MPI_SCSI_STATUS_RESERVATION_CONFLICT ||
729 		     scsi_status == MPI_SCSI_STATUS_TASK_SET_FULL)) {
730 			status = MPI_IOCSTATUS_SUCCESS;
731 		}
732 
733 		if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID)
734 			mptscsih_copy_sense_data(sc, hd, mf, pScsiReply);
735 
736 		/*
737 		 *  Look for + dump FCP ResponseInfo[]!
738 		 */
739 		if (scsi_state & MPI_SCSI_STATE_RESPONSE_INFO_VALID &&
740 		    pScsiReply->ResponseInfo) {
741 			printk(MYIOC_s_NOTE_FMT "[%d:%d:%d:%d] "
742 			"FCP_ResponseInfo=%08xh\n", ioc->name,
743 			sc->device->host->host_no, sc->device->channel,
744 			sc->device->id, sc->device->lun,
745 			le32_to_cpu(pScsiReply->ResponseInfo));
746 		}
747 
748 		switch(status) {
749 		case MPI_IOCSTATUS_BUSY:			/* 0x0002 */
750 			/* CHECKME!
751 			 * Maybe: DRIVER_BUSY | SUGGEST_RETRY | DID_SOFT_ERROR (retry)
752 			 * But not: DID_BUS_BUSY lest one risk
753 			 * killing interrupt handler:-(
754 			 */
755 			sc->result = SAM_STAT_BUSY;
756 			break;
757 
758 		case MPI_IOCSTATUS_SCSI_INVALID_BUS:		/* 0x0041 */
759 		case MPI_IOCSTATUS_SCSI_INVALID_TARGETID:	/* 0x0042 */
760 			sc->result = DID_BAD_TARGET << 16;
761 			break;
762 
763 		case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:	/* 0x0043 */
764 			/* Spoof to SCSI Selection Timeout! */
765 			if (ioc->bus_type != FC)
766 				sc->result = DID_NO_CONNECT << 16;
767 			/* else fibre, just stall until rescan event */
768 			else
769 				sc->result = DID_REQUEUE << 16;
770 
771 			if (hd->sel_timeout[pScsiReq->TargetID] < 0xFFFF)
772 				hd->sel_timeout[pScsiReq->TargetID]++;
773 
774 			vdevice = sc->device->hostdata;
775 			if (!vdevice)
776 				break;
777 			vtarget = vdevice->vtarget;
778 			if (vtarget->tflags & MPT_TARGET_FLAGS_LED_ON) {
779 				mptscsih_issue_sep_command(ioc, vtarget,
780 				    MPI_SEP_REQ_SLOTSTATUS_UNCONFIGURED);
781 				vtarget->tflags &= ~MPT_TARGET_FLAGS_LED_ON;
782 			}
783 			break;
784 
785 		case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:		/* 0x004B */
786 			if ( ioc->bus_type == SAS ) {
787 				u16 ioc_status = le16_to_cpu(pScsiReply->IOCStatus);
788 				if (ioc_status & MPI_IOCSTATUS_FLAG_LOG_INFO_AVAILABLE) {
789 					if ((log_info & SAS_LOGINFO_MASK)
790 					    == SAS_LOGINFO_NEXUS_LOSS) {
791 						sc->result = (DID_BUS_BUSY << 16);
792 						break;
793 					}
794 				}
795 			} else if (ioc->bus_type == FC) {
796 				/*
797 				 * The FC IOC may kill a request for variety of
798 				 * reasons, some of which may be recovered by a
799 				 * retry, some which are unlikely to be
800 				 * recovered. Return DID_ERROR instead of
801 				 * DID_RESET to permit retry of the command,
802 				 * just not an infinite number of them
803 				 */
804 				sc->result = DID_ERROR << 16;
805 				break;
806 			}
807 
808 			/*
809 			 * Allow non-SAS & non-NEXUS_LOSS to drop into below code
810 			 */
811 
812 		case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:	/* 0x0048 */
813 		case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:		/* 0x004C */
814 			/* Linux handles an unsolicited DID_RESET better
815 			 * than an unsolicited DID_ABORT.
816 			 */
817 			sc->result = DID_RESET << 16;
818 
819 			break;
820 
821 		case MPI_IOCSTATUS_SCSI_RESIDUAL_MISMATCH:	/* 0x0049 */
822 			scsi_set_resid(sc, scsi_bufflen(sc) - xfer_cnt);
823 			if((xfer_cnt==0)||(sc->underflow > xfer_cnt))
824 				sc->result=DID_SOFT_ERROR << 16;
825 			else /* Sufficient data transfer occurred */
826 				sc->result = (DID_OK << 16) | scsi_status;
827 			dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
828 			    "RESIDUAL_MISMATCH: result=%x on channel=%d id=%d\n",
829 			    ioc->name, sc->result, sc->device->channel, sc->device->id));
830 			break;
831 
832 		case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:		/* 0x0045 */
833 			/*
834 			 *  Do upfront check for valid SenseData and give it
835 			 *  precedence!
836 			 */
837 			sc->result = (DID_OK << 16) | scsi_status;
838 			if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID) {
839 				/* Have already saved the status and sense data
840 				 */
841 				;
842 			} else {
843 				if (xfer_cnt < sc->underflow) {
844 					if (scsi_status == SAM_STAT_BUSY)
845 						sc->result = SAM_STAT_BUSY;
846 					else
847 						sc->result = DID_SOFT_ERROR << 16;
848 				}
849 				if (scsi_state & (MPI_SCSI_STATE_AUTOSENSE_FAILED | MPI_SCSI_STATE_NO_SCSI_STATUS)) {
850 					/* What to do?
851 				 	*/
852 					sc->result = DID_SOFT_ERROR << 16;
853 				}
854 				else if (scsi_state & MPI_SCSI_STATE_TERMINATED) {
855 					/*  Not real sure here either...  */
856 					sc->result = DID_RESET << 16;
857 				}
858 			}
859 
860 
861 			dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
862 			    "  sc->underflow={report ERR if < %02xh bytes xfer'd}\n",
863 			    ioc->name, sc->underflow));
864 			dreplyprintk(ioc, printk(MYIOC_s_DEBUG_FMT
865 			    "  ActBytesXferd=%02xh\n", ioc->name, xfer_cnt));
866 
867 			/* Report Queue Full
868 			 */
869 			if (scsi_status == MPI_SCSI_STATUS_TASK_SET_FULL)
870 				mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
871 
872 			break;
873 
874 		case MPI_IOCSTATUS_SCSI_DATA_OVERRUN:		/* 0x0044 */
875 			scsi_set_resid(sc, 0);
876 		case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:	/* 0x0040 */
877 		case MPI_IOCSTATUS_SUCCESS:			/* 0x0000 */
878 			sc->result = (DID_OK << 16) | scsi_status;
879 			if (scsi_state == 0) {
880 				;
881 			} else if (scsi_state & MPI_SCSI_STATE_AUTOSENSE_VALID) {
882 				/*
883 				 * If running against circa 200003dd 909 MPT f/w,
884 				 * may get this (AUTOSENSE_VALID) for actual TASK_SET_FULL
885 				 * (QUEUE_FULL) returned from device! --> get 0x0000?128
886 				 * and with SenseBytes set to 0.
887 				 */
888 				if (pScsiReply->SCSIStatus == MPI_SCSI_STATUS_TASK_SET_FULL)
889 					mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
890 
891 			}
892 			else if (scsi_state &
893 			         (MPI_SCSI_STATE_AUTOSENSE_FAILED | MPI_SCSI_STATE_NO_SCSI_STATUS)
894 			   ) {
895 				/*
896 				 * What to do?
897 				 */
898 				sc->result = DID_SOFT_ERROR << 16;
899 			}
900 			else if (scsi_state & MPI_SCSI_STATE_TERMINATED) {
901 				/*  Not real sure here either...  */
902 				sc->result = DID_RESET << 16;
903 			}
904 			else if (scsi_state & MPI_SCSI_STATE_QUEUE_TAG_REJECTED) {
905 				/* Device Inq. data indicates that it supports
906 				 * QTags, but rejects QTag messages.
907 				 * This command completed OK.
908 				 *
909 				 * Not real sure here either so do nothing...  */
910 			}
911 
912 			if (sc->result == MPI_SCSI_STATUS_TASK_SET_FULL)
913 				mptscsih_report_queue_full(sc, pScsiReply, pScsiReq);
914 
915 			/* Add handling of:
916 			 * Reservation Conflict, Busy,
917 			 * Command Terminated, CHECK
918 			 */
919 			break;
920 
921 		case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:		/* 0x0047 */
922 			sc->result = DID_SOFT_ERROR << 16;
923 			break;
924 
925 		case MPI_IOCSTATUS_INVALID_FUNCTION:		/* 0x0001 */
926 		case MPI_IOCSTATUS_INVALID_SGL:			/* 0x0003 */
927 		case MPI_IOCSTATUS_INTERNAL_ERROR:		/* 0x0004 */
928 		case MPI_IOCSTATUS_RESERVED:			/* 0x0005 */
929 		case MPI_IOCSTATUS_INSUFFICIENT_RESOURCES:	/* 0x0006 */
930 		case MPI_IOCSTATUS_INVALID_FIELD:		/* 0x0007 */
931 		case MPI_IOCSTATUS_INVALID_STATE:		/* 0x0008 */
932 		case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:		/* 0x0046 */
933 		case MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED:	/* 0x004A */
934 		default:
935 			/*
936 			 * What to do?
937 			 */
938 			sc->result = DID_SOFT_ERROR << 16;
939 			break;
940 
941 		}	/* switch(status) */
942 
943 #ifdef CONFIG_FUSION_LOGGING
944 		if (sc->result && (ioc->debug_level & MPT_DEBUG_REPLY))
945 			mptscsih_info_scsiio(ioc, sc, pScsiReply);
946 #endif
947 
948 	} /* end of address reply case */
949 
950 	/* Unmap the DMA buffers, if any. */
951 	scsi_dma_unmap(sc);
952 
953 	sc->scsi_done(sc);		/* Issue the command callback */
954 
955 	/* Free Chain buffers */
956 	mptscsih_freeChainBuffers(ioc, req_idx);
957 	return 1;
958 }
959 
960 /*
961  *	mptscsih_flush_running_cmds - For each command found, search
962  *		Scsi_Host instance taskQ and reply to OS.
963  *		Called only if recovering from a FW reload.
964  *	@hd: Pointer to a SCSI HOST structure
965  *
966  *	Returns: None.
967  *
968  *	Must be called while new I/Os are being queued.
969  */
970 static void
971 mptscsih_flush_running_cmds(MPT_SCSI_HOST *hd)
972 {
973 	MPT_ADAPTER *ioc = hd->ioc;
974 	struct scsi_cmnd *sc;
975 	SCSIIORequest_t	*mf = NULL;
976 	int		 ii;
977 	int		 channel, id;
978 
979 	for (ii= 0; ii < ioc->req_depth; ii++) {
980 		sc = mptscsih_getclear_scsi_lookup(ioc, ii);
981 		if (!sc)
982 			continue;
983 		mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(ioc, ii);
984 		if (!mf)
985 			continue;
986 		channel = mf->Bus;
987 		id = mf->TargetID;
988 		mptscsih_freeChainBuffers(ioc, ii);
989 		mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
990 		if ((unsigned char *)mf != sc->host_scribble)
991 			continue;
992 		scsi_dma_unmap(sc);
993 		sc->result = DID_RESET << 16;
994 		sc->host_scribble = NULL;
995 		sdev_printk(KERN_INFO, sc->device, MYIOC_s_FMT
996 		    "completing cmds: fw_channel %d, fw_id %d, sc=%p,"
997 		    " mf = %p, idx=%x\n", ioc->name, channel, id, sc, mf, ii);
998 		sc->scsi_done(sc);
999 	}
1000 }
1001 
1002 /*
1003  *	mptscsih_search_running_cmds - Delete any commands associated
1004  *		with the specified target and lun. Function called only
1005  *		when a lun is disable by mid-layer.
1006  *		Do NOT access the referenced scsi_cmnd structure or
1007  *		members. Will cause either a paging or NULL ptr error.
1008  *		(BUT, BUT, BUT, the code does reference it! - mdr)
1009  *      @hd: Pointer to a SCSI HOST structure
1010  *	@vdevice: per device private data
1011  *
1012  *	Returns: None.
1013  *
1014  *	Called from slave_destroy.
1015  */
1016 static void
1017 mptscsih_search_running_cmds(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
1018 {
1019 	SCSIIORequest_t	*mf = NULL;
1020 	int		 ii;
1021 	struct scsi_cmnd *sc;
1022 	struct scsi_lun  lun;
1023 	MPT_ADAPTER *ioc = hd->ioc;
1024 	unsigned long	flags;
1025 
1026 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1027 	for (ii = 0; ii < ioc->req_depth; ii++) {
1028 		if ((sc = ioc->ScsiLookup[ii]) != NULL) {
1029 
1030 			mf = (SCSIIORequest_t *)MPT_INDEX_2_MFPTR(ioc, ii);
1031 			if (mf == NULL)
1032 				continue;
1033 			/* If the device is a hidden raid component, then its
1034 			 * expected that the mf->function will be RAID_SCSI_IO
1035 			 */
1036 			if (vdevice->vtarget->tflags &
1037 			    MPT_TARGET_FLAGS_RAID_COMPONENT && mf->Function !=
1038 			    MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH)
1039 				continue;
1040 
1041 			int_to_scsilun(vdevice->lun, &lun);
1042 			if ((mf->Bus != vdevice->vtarget->channel) ||
1043 			    (mf->TargetID != vdevice->vtarget->id) ||
1044 			    memcmp(lun.scsi_lun, mf->LUN, 8))
1045 				continue;
1046 
1047 			if ((unsigned char *)mf != sc->host_scribble)
1048 				continue;
1049 			ioc->ScsiLookup[ii] = NULL;
1050 			spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1051 			mptscsih_freeChainBuffers(ioc, ii);
1052 			mpt_free_msg_frame(ioc, (MPT_FRAME_HDR *)mf);
1053 			scsi_dma_unmap(sc);
1054 			sc->host_scribble = NULL;
1055 			sc->result = DID_NO_CONNECT << 16;
1056 			sdev_printk(KERN_INFO, sc->device, MYIOC_s_FMT "completing cmds: fw_channel %d,"
1057 			   "fw_id %d, sc=%p, mf = %p, idx=%x\n", ioc->name, vdevice->vtarget->channel,
1058 			   vdevice->vtarget->id, sc, mf, ii);
1059 			sc->scsi_done(sc);
1060 			spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
1061 		}
1062 	}
1063 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
1064 	return;
1065 }
1066 
1067 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1068 
1069 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1070 /*
1071  *	mptscsih_report_queue_full - Report QUEUE_FULL status returned
1072  *	from a SCSI target device.
1073  *	@sc: Pointer to scsi_cmnd structure
1074  *	@pScsiReply: Pointer to SCSIIOReply_t
1075  *	@pScsiReq: Pointer to original SCSI request
1076  *
1077  *	This routine periodically reports QUEUE_FULL status returned from a
1078  *	SCSI target device.  It reports this to the console via kernel
1079  *	printk() API call, not more than once every 10 seconds.
1080  */
1081 static void
1082 mptscsih_report_queue_full(struct scsi_cmnd *sc, SCSIIOReply_t *pScsiReply, SCSIIORequest_t *pScsiReq)
1083 {
1084 	long time = jiffies;
1085 	MPT_SCSI_HOST		*hd;
1086 	MPT_ADAPTER	*ioc;
1087 
1088 	if (sc->device == NULL)
1089 		return;
1090 	if (sc->device->host == NULL)
1091 		return;
1092 	if ((hd = shost_priv(sc->device->host)) == NULL)
1093 		return;
1094 	ioc = hd->ioc;
1095 	if (time - hd->last_queue_full > 10 * HZ) {
1096 		dprintk(ioc, printk(MYIOC_s_WARN_FMT "Device (%d:%d:%d) reported QUEUE_FULL!\n",
1097 				ioc->name, 0, sc->device->id, sc->device->lun));
1098 		hd->last_queue_full = time;
1099 	}
1100 }
1101 
1102 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1103 /*
1104  *	mptscsih_remove - Removed scsi devices
1105  *	@pdev: Pointer to pci_dev structure
1106  *
1107  *
1108  */
1109 void
1110 mptscsih_remove(struct pci_dev *pdev)
1111 {
1112 	MPT_ADAPTER 		*ioc = pci_get_drvdata(pdev);
1113 	struct Scsi_Host 	*host = ioc->sh;
1114 	MPT_SCSI_HOST		*hd;
1115 	int sz1;
1116 
1117 	if(!host) {
1118 		mpt_detach(pdev);
1119 		return;
1120 	}
1121 
1122 	scsi_remove_host(host);
1123 
1124 	if((hd = shost_priv(host)) == NULL)
1125 		return;
1126 
1127 	mptscsih_shutdown(pdev);
1128 
1129 	sz1=0;
1130 
1131 	if (ioc->ScsiLookup != NULL) {
1132 		sz1 = ioc->req_depth * sizeof(void *);
1133 		kfree(ioc->ScsiLookup);
1134 		ioc->ScsiLookup = NULL;
1135 	}
1136 
1137 	dprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1138 	    "Free'd ScsiLookup (%d) memory\n",
1139 	    ioc->name, sz1));
1140 
1141 	kfree(hd->info_kbuf);
1142 
1143 	/* NULL the Scsi_Host pointer
1144 	 */
1145 	ioc->sh = NULL;
1146 
1147 	scsi_host_put(host);
1148 
1149 	mpt_detach(pdev);
1150 
1151 }
1152 
1153 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1154 /*
1155  *	mptscsih_shutdown - reboot notifier
1156  *
1157  */
1158 void
1159 mptscsih_shutdown(struct pci_dev *pdev)
1160 {
1161 }
1162 
1163 #ifdef CONFIG_PM
1164 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1165 /*
1166  *	mptscsih_suspend - Fusion MPT scsi driver suspend routine.
1167  *
1168  *
1169  */
1170 int
1171 mptscsih_suspend(struct pci_dev *pdev, pm_message_t state)
1172 {
1173 	MPT_ADAPTER 		*ioc = pci_get_drvdata(pdev);
1174 
1175 	scsi_block_requests(ioc->sh);
1176 	flush_scheduled_work();
1177 	mptscsih_shutdown(pdev);
1178 	return mpt_suspend(pdev,state);
1179 }
1180 
1181 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1182 /*
1183  *	mptscsih_resume - Fusion MPT scsi driver resume routine.
1184  *
1185  *
1186  */
1187 int
1188 mptscsih_resume(struct pci_dev *pdev)
1189 {
1190 	MPT_ADAPTER 		*ioc = pci_get_drvdata(pdev);
1191 	int rc;
1192 
1193 	rc = mpt_resume(pdev);
1194 	scsi_unblock_requests(ioc->sh);
1195 	return rc;
1196 }
1197 
1198 #endif
1199 
1200 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1201 /**
1202  *	mptscsih_info - Return information about MPT adapter
1203  *	@SChost: Pointer to Scsi_Host structure
1204  *
1205  *	(linux scsi_host_template.info routine)
1206  *
1207  *	Returns pointer to buffer where information was written.
1208  */
1209 const char *
1210 mptscsih_info(struct Scsi_Host *SChost)
1211 {
1212 	MPT_SCSI_HOST *h;
1213 	int size = 0;
1214 
1215 	h = shost_priv(SChost);
1216 
1217 	if (h) {
1218 		if (h->info_kbuf == NULL)
1219 			if ((h->info_kbuf = kmalloc(0x1000 /* 4Kb */, GFP_KERNEL)) == NULL)
1220 				return h->info_kbuf;
1221 		h->info_kbuf[0] = '\0';
1222 
1223 		mpt_print_ioc_summary(h->ioc, h->info_kbuf, &size, 0, 0);
1224 		h->info_kbuf[size-1] = '\0';
1225 	}
1226 
1227 	return h->info_kbuf;
1228 }
1229 
1230 struct info_str {
1231 	char *buffer;
1232 	int   length;
1233 	int   offset;
1234 	int   pos;
1235 };
1236 
1237 static void
1238 mptscsih_copy_mem_info(struct info_str *info, char *data, int len)
1239 {
1240 	if (info->pos + len > info->length)
1241 		len = info->length - info->pos;
1242 
1243 	if (info->pos + len < info->offset) {
1244 		info->pos += len;
1245 		return;
1246 	}
1247 
1248 	if (info->pos < info->offset) {
1249 	        data += (info->offset - info->pos);
1250 	        len  -= (info->offset - info->pos);
1251 	}
1252 
1253 	if (len > 0) {
1254                 memcpy(info->buffer + info->pos, data, len);
1255                 info->pos += len;
1256 	}
1257 }
1258 
1259 static int
1260 mptscsih_copy_info(struct info_str *info, char *fmt, ...)
1261 {
1262 	va_list args;
1263 	char buf[81];
1264 	int len;
1265 
1266 	va_start(args, fmt);
1267 	len = vsprintf(buf, fmt, args);
1268 	va_end(args);
1269 
1270 	mptscsih_copy_mem_info(info, buf, len);
1271 	return len;
1272 }
1273 
1274 static int
1275 mptscsih_host_info(MPT_ADAPTER *ioc, char *pbuf, off_t offset, int len)
1276 {
1277 	struct info_str info;
1278 
1279 	info.buffer	= pbuf;
1280 	info.length	= len;
1281 	info.offset	= offset;
1282 	info.pos	= 0;
1283 
1284 	mptscsih_copy_info(&info, "%s: %s, ", ioc->name, ioc->prod_name);
1285 	mptscsih_copy_info(&info, "%s%08xh, ", MPT_FW_REV_MAGIC_ID_STRING, ioc->facts.FWVersion.Word);
1286 	mptscsih_copy_info(&info, "Ports=%d, ", ioc->facts.NumberOfPorts);
1287 	mptscsih_copy_info(&info, "MaxQ=%d\n", ioc->req_depth);
1288 
1289 	return ((info.pos > info.offset) ? info.pos - info.offset : 0);
1290 }
1291 
1292 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1293 /**
1294  *	mptscsih_proc_info - Return information about MPT adapter
1295  * 	@host:   scsi host struct
1296  * 	@buffer: if write, user data; if read, buffer for user
1297  *	@start: returns the buffer address
1298  * 	@offset: if write, 0; if read, the current offset into the buffer from
1299  * 		 the previous read.
1300  * 	@length: if write, return length;
1301  *	@func:   write = 1; read = 0
1302  *
1303  *	(linux scsi_host_template.info routine)
1304  */
1305 int
1306 mptscsih_proc_info(struct Scsi_Host *host, char *buffer, char **start, off_t offset,
1307 			int length, int func)
1308 {
1309 	MPT_SCSI_HOST	*hd = shost_priv(host);
1310 	MPT_ADAPTER	*ioc = hd->ioc;
1311 	int size = 0;
1312 
1313 	if (func) {
1314 		/*
1315 		 * write is not supported
1316 		 */
1317 	} else {
1318 		if (start)
1319 			*start = buffer;
1320 
1321 		size = mptscsih_host_info(ioc, buffer, offset, length);
1322 	}
1323 
1324 	return size;
1325 }
1326 
1327 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1328 #define ADD_INDEX_LOG(req_ent)	do { } while(0)
1329 
1330 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1331 /**
1332  *	mptscsih_qcmd - Primary Fusion MPT SCSI initiator IO start routine.
1333  *	@SCpnt: Pointer to scsi_cmnd structure
1334  *	@done: Pointer SCSI mid-layer IO completion function
1335  *
1336  *	(linux scsi_host_template.queuecommand routine)
1337  *	This is the primary SCSI IO start routine.  Create a MPI SCSIIORequest
1338  *	from a linux scsi_cmnd request and send it to the IOC.
1339  *
1340  *	Returns 0. (rtn value discarded by linux scsi mid-layer)
1341  */
1342 int
1343 mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
1344 {
1345 	MPT_SCSI_HOST		*hd;
1346 	MPT_FRAME_HDR		*mf;
1347 	SCSIIORequest_t		*pScsiReq;
1348 	VirtDevice		*vdevice = SCpnt->device->hostdata;
1349 	int	 lun;
1350 	u32	 datalen;
1351 	u32	 scsictl;
1352 	u32	 scsidir;
1353 	u32	 cmd_len;
1354 	int	 my_idx;
1355 	int	 ii;
1356 	MPT_ADAPTER *ioc;
1357 
1358 	hd = shost_priv(SCpnt->device->host);
1359 	ioc = hd->ioc;
1360 	lun = SCpnt->device->lun;
1361 	SCpnt->scsi_done = done;
1362 
1363 	dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT "qcmd: SCpnt=%p, done()=%p\n",
1364 		ioc->name, SCpnt, done));
1365 
1366 	if (hd->resetPending) {
1367 		dtmprintk(ioc, printk(MYIOC_s_WARN_FMT "qcmd: SCpnt=%p timeout + 60HZ\n",
1368 			ioc->name, SCpnt));
1369 		return SCSI_MLQUEUE_HOST_BUSY;
1370 	}
1371 
1372 	/*
1373 	 *  Put together a MPT SCSI request...
1374 	 */
1375 	if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
1376 		dprintk(ioc, printk(MYIOC_s_WARN_FMT "QueueCmd, no msg frames!!\n",
1377 				ioc->name));
1378 		return SCSI_MLQUEUE_HOST_BUSY;
1379 	}
1380 
1381 	pScsiReq = (SCSIIORequest_t *) mf;
1382 
1383 	my_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
1384 
1385 	ADD_INDEX_LOG(my_idx);
1386 
1387 	/*    TUR's being issued with scsictl=0x02000000 (DATA_IN)!
1388 	 *    Seems we may receive a buffer (datalen>0) even when there
1389 	 *    will be no data transfer!  GRRRRR...
1390 	 */
1391 	if (SCpnt->sc_data_direction == DMA_FROM_DEVICE) {
1392 		datalen = scsi_bufflen(SCpnt);
1393 		scsidir = MPI_SCSIIO_CONTROL_READ;	/* DATA IN  (host<--ioc<--dev) */
1394 	} else if (SCpnt->sc_data_direction == DMA_TO_DEVICE) {
1395 		datalen = scsi_bufflen(SCpnt);
1396 		scsidir = MPI_SCSIIO_CONTROL_WRITE;	/* DATA OUT (host-->ioc-->dev) */
1397 	} else {
1398 		datalen = 0;
1399 		scsidir = MPI_SCSIIO_CONTROL_NODATATRANSFER;
1400 	}
1401 
1402 	/* Default to untagged. Once a target structure has been allocated,
1403 	 * use the Inquiry data to determine if device supports tagged.
1404 	 */
1405 	if (vdevice
1406 	    && (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_Q_YES)
1407 	    && (SCpnt->device->tagged_supported)) {
1408 		scsictl = scsidir | MPI_SCSIIO_CONTROL_SIMPLEQ;
1409 	} else {
1410 		scsictl = scsidir | MPI_SCSIIO_CONTROL_UNTAGGED;
1411 	}
1412 
1413 	/* Use the above information to set up the message frame
1414 	 */
1415 	pScsiReq->TargetID = (u8) vdevice->vtarget->id;
1416 	pScsiReq->Bus = vdevice->vtarget->channel;
1417 	pScsiReq->ChainOffset = 0;
1418 	if (vdevice->vtarget->tflags &  MPT_TARGET_FLAGS_RAID_COMPONENT)
1419 		pScsiReq->Function = MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
1420 	else
1421 		pScsiReq->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
1422 	pScsiReq->CDBLength = SCpnt->cmd_len;
1423 	pScsiReq->SenseBufferLength = MPT_SENSE_BUFFER_SIZE;
1424 	pScsiReq->Reserved = 0;
1425 	pScsiReq->MsgFlags = mpt_msg_flags();
1426 	int_to_scsilun(SCpnt->device->lun, (struct scsi_lun *)pScsiReq->LUN);
1427 	pScsiReq->Control = cpu_to_le32(scsictl);
1428 
1429 	/*
1430 	 *  Write SCSI CDB into the message
1431 	 */
1432 	cmd_len = SCpnt->cmd_len;
1433 	for (ii=0; ii < cmd_len; ii++)
1434 		pScsiReq->CDB[ii] = SCpnt->cmnd[ii];
1435 
1436 	for (ii=cmd_len; ii < 16; ii++)
1437 		pScsiReq->CDB[ii] = 0;
1438 
1439 	/* DataLength */
1440 	pScsiReq->DataLength = cpu_to_le32(datalen);
1441 
1442 	/* SenseBuffer low address */
1443 	pScsiReq->SenseBufferLowAddr = cpu_to_le32(ioc->sense_buf_low_dma
1444 					   + (my_idx * MPT_SENSE_BUFFER_ALLOC));
1445 
1446 	/* Now add the SG list
1447 	 * Always have a SGE even if null length.
1448 	 */
1449 	if (datalen == 0) {
1450 		/* Add a NULL SGE */
1451 		mptscsih_add_sge((char *)&pScsiReq->SGL, MPT_SGE_FLAGS_SSIMPLE_READ | 0,
1452 			(dma_addr_t) -1);
1453 	} else {
1454 		/* Add a 32 or 64 bit SGE */
1455 		if (mptscsih_AddSGE(ioc, SCpnt, pScsiReq, my_idx) != SUCCESS)
1456 			goto fail;
1457 	}
1458 
1459 	SCpnt->host_scribble = (unsigned char *)mf;
1460 	mptscsih_set_scsi_lookup(ioc, my_idx, SCpnt);
1461 
1462 	mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
1463 	dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Issued SCSI cmd (%p) mf=%p idx=%d\n",
1464 			ioc->name, SCpnt, mf, my_idx));
1465 	DBG_DUMP_REQUEST_FRAME(ioc, (u32 *)mf);
1466 	return 0;
1467 
1468  fail:
1469 	mptscsih_freeChainBuffers(ioc, my_idx);
1470 	mpt_free_msg_frame(ioc, mf);
1471 	return SCSI_MLQUEUE_HOST_BUSY;
1472 }
1473 
1474 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1475 /*
1476  *	mptscsih_freeChainBuffers - Function to free chain buffers associated
1477  *	with a SCSI IO request
1478  *	@hd: Pointer to the MPT_SCSI_HOST instance
1479  *	@req_idx: Index of the SCSI IO request frame.
1480  *
1481  *	Called if SG chain buffer allocation fails and mptscsih callbacks.
1482  *	No return.
1483  */
1484 static void
1485 mptscsih_freeChainBuffers(MPT_ADAPTER *ioc, int req_idx)
1486 {
1487 	MPT_FRAME_HDR *chain;
1488 	unsigned long flags;
1489 	int chain_idx;
1490 	int next;
1491 
1492 	/* Get the first chain index and reset
1493 	 * tracker state.
1494 	 */
1495 	chain_idx = ioc->ReqToChain[req_idx];
1496 	ioc->ReqToChain[req_idx] = MPT_HOST_NO_CHAIN;
1497 
1498 	while (chain_idx != MPT_HOST_NO_CHAIN) {
1499 
1500 		/* Save the next chain buffer index */
1501 		next = ioc->ChainToChain[chain_idx];
1502 
1503 		/* Free this chain buffer and reset
1504 		 * tracker
1505 		 */
1506 		ioc->ChainToChain[chain_idx] = MPT_HOST_NO_CHAIN;
1507 
1508 		chain = (MPT_FRAME_HDR *) (ioc->ChainBuffer
1509 					+ (chain_idx * ioc->req_sz));
1510 
1511 		spin_lock_irqsave(&ioc->FreeQlock, flags);
1512 		list_add_tail(&chain->u.frame.linkage.list, &ioc->FreeChainQ);
1513 		spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1514 
1515 		dmfprintk(ioc, printk(MYIOC_s_DEBUG_FMT "FreeChainBuffers (index %d)\n",
1516 				ioc->name, chain_idx));
1517 
1518 		/* handle next */
1519 		chain_idx = next;
1520 	}
1521 	return;
1522 }
1523 
1524 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1525 /*
1526  *	Reset Handling
1527  */
1528 
1529 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1530 /**
1531  *	mptscsih_TMHandler - Generic handler for SCSI Task Management.
1532  *	@hd: Pointer to MPT SCSI HOST structure
1533  *	@type: Task Management type
1534  *	@channel: channel number for task management
1535  *	@id: Logical Target ID for reset (if appropriate)
1536  *	@lun: Logical Unit for reset (if appropriate)
1537  *	@ctx2abort: Context for the task to be aborted (if appropriate)
1538  *	@timeout: timeout for task management control
1539  *
1540  *	Fall through to mpt_HardResetHandler if: not operational, too many
1541  *	failed TM requests or handshake failure.
1542  *
1543  *	Remark: Currently invoked from a non-interrupt thread (_bh).
1544  *
1545  *	Note: With old EH code, at most 1 SCSI TaskMgmt function per IOC
1546  *	will be active.
1547  *
1548  *	Returns 0 for SUCCESS, or %FAILED.
1549  **/
1550 int
1551 mptscsih_TMHandler(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun, int ctx2abort, ulong timeout)
1552 {
1553 	MPT_ADAPTER	*ioc;
1554 	int		 rc = -1;
1555 	u32		 ioc_raw_state;
1556 	unsigned long	 flags;
1557 
1558 	ioc = hd->ioc;
1559 	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TMHandler Entered!\n", ioc->name));
1560 
1561 	// SJR - CHECKME - Can we avoid this here?
1562 	// (mpt_HardResetHandler has this check...)
1563 	spin_lock_irqsave(&ioc->diagLock, flags);
1564 	if ((ioc->diagPending) || (ioc->alt_ioc && ioc->alt_ioc->diagPending)) {
1565 		spin_unlock_irqrestore(&ioc->diagLock, flags);
1566 		return FAILED;
1567 	}
1568 	spin_unlock_irqrestore(&ioc->diagLock, flags);
1569 
1570 	/*  Wait a fixed amount of time for the TM pending flag to be cleared.
1571 	 *  If we time out and not bus reset, then we return a FAILED status
1572 	 *  to the caller.
1573 	 *  The call to mptscsih_tm_pending_wait() will set the pending flag
1574 	 *  if we are
1575 	 *  successful. Otherwise, reload the FW.
1576 	 */
1577 	if (mptscsih_tm_pending_wait(hd) == FAILED) {
1578 		if (type == MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK) {
1579 			dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TMHandler abort: "
1580 			   "Timed out waiting for last TM (%d) to complete! \n",
1581 			   ioc->name, hd->tmPending));
1582 			return FAILED;
1583 		} else if (type == MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET) {
1584 			dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TMHandler target "
1585 				"reset: Timed out waiting for last TM (%d) "
1586 				"to complete! \n", ioc->name,
1587 				hd->tmPending));
1588 			return FAILED;
1589 		} else if (type == MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS) {
1590 			dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TMHandler bus reset: "
1591 			   "Timed out waiting for last TM (%d) to complete! \n",
1592 			  ioc->name, hd->tmPending));
1593 			return FAILED;
1594 		}
1595 	} else {
1596 		spin_lock_irqsave(&ioc->FreeQlock, flags);
1597 		hd->tmPending |=  (1 << type);
1598 		spin_unlock_irqrestore(&ioc->FreeQlock, flags);
1599 	}
1600 
1601 	ioc_raw_state = mpt_GetIocState(ioc, 0);
1602 
1603 	if ((ioc_raw_state & MPI_IOC_STATE_MASK) != MPI_IOC_STATE_OPERATIONAL) {
1604 		printk(MYIOC_s_WARN_FMT
1605 			"TM Handler for type=%x: IOC Not operational (0x%x)!\n",
1606 			ioc->name, type, ioc_raw_state);
1607 		printk(MYIOC_s_WARN_FMT " Issuing HardReset!!\n", ioc->name);
1608 		if (mpt_HardResetHandler(ioc, CAN_SLEEP) < 0)
1609 			printk(MYIOC_s_WARN_FMT "TMHandler: HardReset "
1610 			    "FAILED!!\n", ioc->name);
1611 		return FAILED;
1612 	}
1613 
1614 	if (ioc_raw_state & MPI_DOORBELL_ACTIVE) {
1615 		printk(MYIOC_s_WARN_FMT
1616 			"TM Handler for type=%x: ioc_state: "
1617 			"DOORBELL_ACTIVE (0x%x)!\n",
1618 			ioc->name, type, ioc_raw_state);
1619 		return FAILED;
1620 	}
1621 
1622 	/* Isse the Task Mgmt request.
1623 	 */
1624 	if (hd->hard_resets < -1)
1625 		hd->hard_resets++;
1626 
1627 	rc = mptscsih_IssueTaskMgmt(hd, type, channel, id, lun,
1628 	    ctx2abort, timeout);
1629 	if (rc)
1630 		printk(MYIOC_s_INFO_FMT "Issue of TaskMgmt failed!\n",
1631 		       ioc->name);
1632 	else
1633 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Issue of TaskMgmt Successful!\n",
1634 			   ioc->name));
1635 
1636 	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1637 			"TMHandler rc = %d!\n", ioc->name, rc));
1638 
1639 	return rc;
1640 }
1641 
1642 
1643 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1644 /**
1645  *	mptscsih_IssueTaskMgmt - Generic send Task Management function.
1646  *	@hd: Pointer to MPT_SCSI_HOST structure
1647  *	@type: Task Management type
1648  *	@channel: channel number for task management
1649  *	@id: Logical Target ID for reset (if appropriate)
1650  *	@lun: Logical Unit for reset (if appropriate)
1651  *	@ctx2abort: Context for the task to be aborted (if appropriate)
1652  *	@timeout: timeout for task management control
1653  *
1654  *	Remark: _HardResetHandler can be invoked from an interrupt thread (timer)
1655  *	or a non-interrupt thread.  In the former, must not call schedule().
1656  *
1657  *	Not all fields are meaningfull for all task types.
1658  *
1659  *	Returns 0 for SUCCESS, or FAILED.
1660  *
1661  **/
1662 static int
1663 mptscsih_IssueTaskMgmt(MPT_SCSI_HOST *hd, u8 type, u8 channel, u8 id, int lun, int ctx2abort, ulong timeout)
1664 {
1665 	MPT_FRAME_HDR	*mf;
1666 	SCSITaskMgmt_t	*pScsiTm;
1667 	int		 ii;
1668 	int		 retval;
1669 	MPT_ADAPTER 	*ioc = hd->ioc;
1670 
1671 	/* Return Fail to calling function if no message frames available.
1672 	 */
1673 	if ((mf = mpt_get_msg_frame(ioc->TaskCtx, ioc)) == NULL) {
1674 		dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "IssueTaskMgmt, no msg frames!!\n",
1675 				ioc->name));
1676 		return FAILED;
1677 	}
1678 	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "IssueTaskMgmt request @ %p\n",
1679 			ioc->name, mf));
1680 
1681 	/* Format the Request
1682 	 */
1683 	pScsiTm = (SCSITaskMgmt_t *) mf;
1684 	pScsiTm->TargetID = id;
1685 	pScsiTm->Bus = channel;
1686 	pScsiTm->ChainOffset = 0;
1687 	pScsiTm->Function = MPI_FUNCTION_SCSI_TASK_MGMT;
1688 
1689 	pScsiTm->Reserved = 0;
1690 	pScsiTm->TaskType = type;
1691 	pScsiTm->Reserved1 = 0;
1692 	pScsiTm->MsgFlags = (type == MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS)
1693                     ? MPI_SCSITASKMGMT_MSGFLAGS_LIPRESET_RESET_OPTION : 0;
1694 
1695 	int_to_scsilun(lun, (struct scsi_lun *)pScsiTm->LUN);
1696 
1697 	for (ii=0; ii < 7; ii++)
1698 		pScsiTm->Reserved2[ii] = 0;
1699 
1700 	pScsiTm->TaskMsgContext = ctx2abort;
1701 
1702 	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "IssueTaskMgmt: ctx2abort (0x%08x) "
1703 		"type=%d\n", ioc->name, ctx2abort, type));
1704 
1705 	DBG_DUMP_TM_REQUEST_FRAME(ioc, (u32 *)pScsiTm);
1706 
1707 	if ((ioc->facts.IOCCapabilities & MPI_IOCFACTS_CAPABILITY_HIGH_PRI_Q) &&
1708 	    (ioc->facts.MsgVersion >= MPI_VERSION_01_05))
1709 		mpt_put_msg_frame_hi_pri(ioc->TaskCtx, ioc, mf);
1710 	else {
1711 		retval = mpt_send_handshake_request(ioc->TaskCtx, ioc,
1712 			sizeof(SCSITaskMgmt_t), (u32*)pScsiTm, CAN_SLEEP);
1713 		if (retval) {
1714 			dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "send_handshake FAILED!"
1715 			" (hd %p, ioc %p, mf %p, rc=%d) \n", ioc->name, hd,
1716 			ioc, mf, retval));
1717 			goto fail_out;
1718 		}
1719 	}
1720 
1721 	if(mptscsih_tm_wait_for_completion(hd, timeout) == FAILED) {
1722 		dfailprintk(ioc, printk(MYIOC_s_ERR_FMT "task management request TIMED OUT!"
1723 			" (hd %p, ioc %p, mf %p) \n", ioc->name, hd,
1724 			ioc, mf));
1725 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Calling HardReset! \n",
1726 			 ioc->name));
1727 		retval = mpt_HardResetHandler(ioc, CAN_SLEEP);
1728 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "rc=%d \n",
1729 			 ioc->name, retval));
1730 		goto fail_out;
1731 	}
1732 
1733 	/*
1734 	 * Handle success case, see if theres a non-zero ioc_status.
1735 	 */
1736 	if (hd->tm_iocstatus == MPI_IOCSTATUS_SUCCESS ||
1737 	   hd->tm_iocstatus == MPI_IOCSTATUS_SCSI_TASK_TERMINATED ||
1738 	   hd->tm_iocstatus == MPI_IOCSTATUS_SCSI_IOC_TERMINATED)
1739 		retval = 0;
1740 	else
1741 		retval = FAILED;
1742 
1743 	return retval;
1744 
1745  fail_out:
1746 
1747 	/*
1748 	 * Free task management mf, and corresponding tm flags
1749 	 */
1750 	mpt_free_msg_frame(ioc, mf);
1751 	hd->tmPending = 0;
1752 	hd->tmState = TM_STATE_NONE;
1753 	return FAILED;
1754 }
1755 
1756 static int
1757 mptscsih_get_tm_timeout(MPT_ADAPTER *ioc)
1758 {
1759 	switch (ioc->bus_type) {
1760 	case FC:
1761 		return 40;
1762 	case SAS:
1763 	case SPI:
1764 	default:
1765 		return 10;
1766 	}
1767 }
1768 
1769 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1770 /**
1771  *	mptscsih_abort - Abort linux scsi_cmnd routine, new_eh variant
1772  *	@SCpnt: Pointer to scsi_cmnd structure, IO to be aborted
1773  *
1774  *	(linux scsi_host_template.eh_abort_handler routine)
1775  *
1776  *	Returns SUCCESS or FAILED.
1777  **/
1778 int
1779 mptscsih_abort(struct scsi_cmnd * SCpnt)
1780 {
1781 	MPT_SCSI_HOST	*hd;
1782 	MPT_FRAME_HDR	*mf;
1783 	u32		 ctx2abort;
1784 	int		 scpnt_idx;
1785 	int		 retval;
1786 	VirtDevice	 *vdevice;
1787 	ulong	 	 sn = SCpnt->serial_number;
1788 	MPT_ADAPTER	*ioc;
1789 
1790 	/* If we can't locate our host adapter structure, return FAILED status.
1791 	 */
1792 	if ((hd = shost_priv(SCpnt->device->host)) == NULL) {
1793 		SCpnt->result = DID_RESET << 16;
1794 		SCpnt->scsi_done(SCpnt);
1795 		printk(KERN_ERR MYNAM ": task abort: "
1796 		    "can't locate host! (sc=%p)\n", SCpnt);
1797 		return FAILED;
1798 	}
1799 
1800 	ioc = hd->ioc;
1801 	printk(MYIOC_s_INFO_FMT "attempting task abort! (sc=%p)\n",
1802 	       ioc->name, SCpnt);
1803 	scsi_print_command(SCpnt);
1804 
1805 	vdevice = SCpnt->device->hostdata;
1806 	if (!vdevice || !vdevice->vtarget) {
1807 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1808 		    "task abort: device has been deleted (sc=%p)\n",
1809 		    ioc->name, SCpnt));
1810 		SCpnt->result = DID_NO_CONNECT << 16;
1811 		SCpnt->scsi_done(SCpnt);
1812 		retval = 0;
1813 		goto out;
1814 	}
1815 
1816 	/* Task aborts are not supported for hidden raid components.
1817 	 */
1818 	if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1819 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
1820 		    "task abort: hidden raid component (sc=%p)\n",
1821 		    ioc->name, SCpnt));
1822 		SCpnt->result = DID_RESET << 16;
1823 		retval = FAILED;
1824 		goto out;
1825 	}
1826 
1827 	/* Find this command
1828 	 */
1829 	if ((scpnt_idx = SCPNT_TO_LOOKUP_IDX(ioc, SCpnt)) < 0) {
1830 		/* Cmd not found in ScsiLookup.
1831 		 * Do OS callback.
1832 		 */
1833 		SCpnt->result = DID_RESET << 16;
1834 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "task abort: "
1835 		   "Command not in the active list! (sc=%p)\n", ioc->name,
1836 		   SCpnt));
1837 		retval = 0;
1838 		goto out;
1839 	}
1840 
1841 	if (hd->resetPending) {
1842 		retval = FAILED;
1843 		goto out;
1844 	}
1845 
1846 	if (hd->timeouts < -1)
1847 		hd->timeouts++;
1848 
1849 	/* Most important!  Set TaskMsgContext to SCpnt's MsgContext!
1850 	 * (the IO to be ABORT'd)
1851 	 *
1852 	 * NOTE: Since we do not byteswap MsgContext, we do not
1853 	 *	 swap it here either.  It is an opaque cookie to
1854 	 *	 the controller, so it does not matter. -DaveM
1855 	 */
1856 	mf = MPT_INDEX_2_MFPTR(ioc, scpnt_idx);
1857 	ctx2abort = mf->u.frame.hwhdr.msgctxu.MsgContext;
1858 
1859 	hd->abortSCpnt = SCpnt;
1860 
1861 	retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
1862 	    vdevice->vtarget->channel, vdevice->vtarget->id, vdevice->lun,
1863 	    ctx2abort, mptscsih_get_tm_timeout(ioc));
1864 
1865 	if (SCPNT_TO_LOOKUP_IDX(ioc, SCpnt) == scpnt_idx &&
1866 	    SCpnt->serial_number == sn)
1867 		retval = FAILED;
1868 
1869  out:
1870 	printk(MYIOC_s_INFO_FMT "task abort: %s (sc=%p)\n",
1871 	    ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1872 
1873 	if (retval == 0)
1874 		return SUCCESS;
1875 	else
1876 		return FAILED;
1877 }
1878 
1879 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1880 /**
1881  *	mptscsih_dev_reset - Perform a SCSI TARGET_RESET!  new_eh variant
1882  *	@SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1883  *
1884  *	(linux scsi_host_template.eh_dev_reset_handler routine)
1885  *
1886  *	Returns SUCCESS or FAILED.
1887  **/
1888 int
1889 mptscsih_dev_reset(struct scsi_cmnd * SCpnt)
1890 {
1891 	MPT_SCSI_HOST	*hd;
1892 	int		 retval;
1893 	VirtDevice	 *vdevice;
1894 	MPT_ADAPTER	*ioc;
1895 
1896 	/* If we can't locate our host adapter structure, return FAILED status.
1897 	 */
1898 	if ((hd = shost_priv(SCpnt->device->host)) == NULL){
1899 		printk(KERN_ERR MYNAM ": target reset: "
1900 		   "Can't locate host! (sc=%p)\n", SCpnt);
1901 		return FAILED;
1902 	}
1903 
1904 	ioc = hd->ioc;
1905 	printk(MYIOC_s_INFO_FMT "attempting target reset! (sc=%p)\n",
1906 	       ioc->name, SCpnt);
1907 	scsi_print_command(SCpnt);
1908 
1909 	if (hd->resetPending) {
1910 		retval = FAILED;
1911 		goto out;
1912 	}
1913 
1914 	vdevice = SCpnt->device->hostdata;
1915 	if (!vdevice || !vdevice->vtarget) {
1916 		retval = 0;
1917 		goto out;
1918 	}
1919 
1920 	/* Target reset to hidden raid component is not supported
1921 	 */
1922 	if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
1923 		retval = FAILED;
1924 		goto out;
1925 	}
1926 
1927 	retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
1928 	    vdevice->vtarget->channel, vdevice->vtarget->id, 0, 0,
1929 	    mptscsih_get_tm_timeout(ioc));
1930 
1931  out:
1932 	printk (MYIOC_s_INFO_FMT "target reset: %s (sc=%p)\n",
1933 	    ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1934 
1935 	if (retval == 0)
1936 		return SUCCESS;
1937 	else
1938 		return FAILED;
1939 }
1940 
1941 
1942 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1943 /**
1944  *	mptscsih_bus_reset - Perform a SCSI BUS_RESET!	new_eh variant
1945  *	@SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1946  *
1947  *	(linux scsi_host_template.eh_bus_reset_handler routine)
1948  *
1949  *	Returns SUCCESS or FAILED.
1950  **/
1951 int
1952 mptscsih_bus_reset(struct scsi_cmnd * SCpnt)
1953 {
1954 	MPT_SCSI_HOST	*hd;
1955 	int		 retval;
1956 	VirtDevice	 *vdevice;
1957 	MPT_ADAPTER	*ioc;
1958 
1959 	/* If we can't locate our host adapter structure, return FAILED status.
1960 	 */
1961 	if ((hd = shost_priv(SCpnt->device->host)) == NULL){
1962 		printk(KERN_ERR MYNAM ": bus reset: "
1963 		   "Can't locate host! (sc=%p)\n", SCpnt);
1964 		return FAILED;
1965 	}
1966 
1967 	ioc = hd->ioc;
1968 	printk(MYIOC_s_INFO_FMT "attempting bus reset! (sc=%p)\n",
1969 	       ioc->name, SCpnt);
1970 	scsi_print_command(SCpnt);
1971 
1972 	if (hd->timeouts < -1)
1973 		hd->timeouts++;
1974 
1975 	vdevice = SCpnt->device->hostdata;
1976 	retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
1977 	    vdevice->vtarget->channel, 0, 0, 0, mptscsih_get_tm_timeout(ioc));
1978 
1979 	printk(MYIOC_s_INFO_FMT "bus reset: %s (sc=%p)\n",
1980 	    ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
1981 
1982 	if (retval == 0)
1983 		return SUCCESS;
1984 	else
1985 		return FAILED;
1986 }
1987 
1988 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
1989 /**
1990  *	mptscsih_host_reset - Perform a SCSI host adapter RESET (new_eh variant)
1991  *	@SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
1992  *
1993  *	(linux scsi_host_template.eh_host_reset_handler routine)
1994  *
1995  *	Returns SUCCESS or FAILED.
1996  */
1997 int
1998 mptscsih_host_reset(struct scsi_cmnd *SCpnt)
1999 {
2000 	MPT_SCSI_HOST *  hd;
2001 	int              retval;
2002 	MPT_ADAPTER	*ioc;
2003 
2004 	/*  If we can't locate the host to reset, then we failed. */
2005 	if ((hd = shost_priv(SCpnt->device->host)) == NULL){
2006 		printk(KERN_ERR MYNAM ": host reset: "
2007 		    "Can't locate host! (sc=%p)\n", SCpnt);
2008 		return FAILED;
2009 	}
2010 
2011 	ioc = hd->ioc;
2012 	printk(MYIOC_s_INFO_FMT "attempting host reset! (sc=%p)\n",
2013 	    ioc->name, SCpnt);
2014 
2015 	/*  If our attempts to reset the host failed, then return a failed
2016 	 *  status.  The host will be taken off line by the SCSI mid-layer.
2017 	 */
2018 	if (mpt_HardResetHandler(ioc, CAN_SLEEP) < 0) {
2019 		retval = FAILED;
2020 	} else {
2021 		/*  Make sure TM pending is cleared and TM state is set to
2022 		 *  NONE.
2023 		 */
2024 		retval = 0;
2025 		hd->tmPending = 0;
2026 		hd->tmState = TM_STATE_NONE;
2027 	}
2028 
2029 	printk(MYIOC_s_INFO_FMT "host reset: %s (sc=%p)\n",
2030 	    ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);
2031 
2032 	return retval;
2033 }
2034 
2035 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2036 /**
2037  *	mptscsih_tm_pending_wait - wait for pending task management request to complete
2038  *	@hd: Pointer to MPT host structure.
2039  *
2040  *	Returns {SUCCESS,FAILED}.
2041  */
2042 static int
2043 mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd)
2044 {
2045 	unsigned long  flags;
2046 	int            loop_count = 4 * 10;  /* Wait 10 seconds */
2047 	int            status = FAILED;
2048 	MPT_ADAPTER	*ioc = hd->ioc;
2049 
2050 	do {
2051 		spin_lock_irqsave(&ioc->FreeQlock, flags);
2052 		if (hd->tmState == TM_STATE_NONE) {
2053 			hd->tmState = TM_STATE_IN_PROGRESS;
2054 			hd->tmPending = 1;
2055 			spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2056 			status = SUCCESS;
2057 			break;
2058 		}
2059 		spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2060 		msleep(250);
2061 	} while (--loop_count);
2062 
2063 	return status;
2064 }
2065 
2066 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2067 /**
2068  *	mptscsih_tm_wait_for_completion - wait for completion of TM task
2069  *	@hd: Pointer to MPT host structure.
2070  *	@timeout: timeout value
2071  *
2072  *	Returns {SUCCESS,FAILED}.
2073  */
2074 static int
2075 mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout )
2076 {
2077 	unsigned long  flags;
2078 	int            loop_count = 4 * timeout;
2079 	int            status = FAILED;
2080 	MPT_ADAPTER	*ioc = hd->ioc;
2081 
2082 	do {
2083 		spin_lock_irqsave(&ioc->FreeQlock, flags);
2084 		if(hd->tmPending == 0) {
2085 			status = SUCCESS;
2086 			spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2087 			break;
2088 		}
2089 		spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2090 		msleep(250);
2091 	} while (--loop_count);
2092 
2093 	return status;
2094 }
2095 
2096 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2097 static void
2098 mptscsih_taskmgmt_response_code(MPT_ADAPTER *ioc, u8 response_code)
2099 {
2100 	char *desc;
2101 
2102 	switch (response_code) {
2103 	case MPI_SCSITASKMGMT_RSP_TM_COMPLETE:
2104 		desc = "The task completed.";
2105 		break;
2106 	case MPI_SCSITASKMGMT_RSP_INVALID_FRAME:
2107 		desc = "The IOC received an invalid frame status.";
2108 		break;
2109 	case MPI_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
2110 		desc = "The task type is not supported.";
2111 		break;
2112 	case MPI_SCSITASKMGMT_RSP_TM_FAILED:
2113 		desc = "The requested task failed.";
2114 		break;
2115 	case MPI_SCSITASKMGMT_RSP_TM_SUCCEEDED:
2116 		desc = "The task completed successfully.";
2117 		break;
2118 	case MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN:
2119 		desc = "The LUN request is invalid.";
2120 		break;
2121 	case MPI_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
2122 		desc = "The task is in the IOC queue and has not been sent to target.";
2123 		break;
2124 	default:
2125 		desc = "unknown";
2126 		break;
2127 	}
2128 	printk(MYIOC_s_INFO_FMT "Response Code(0x%08x): F/W: %s\n",
2129 		ioc->name, response_code, desc);
2130 }
2131 
2132 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2133 /**
2134  *	mptscsih_taskmgmt_complete - Registered with Fusion MPT base driver
2135  *	@ioc: Pointer to MPT_ADAPTER structure
2136  *	@mf: Pointer to SCSI task mgmt request frame
2137  *	@mr: Pointer to SCSI task mgmt reply frame
2138  *
2139  *	This routine is called from mptbase.c::mpt_interrupt() at the completion
2140  *	of any SCSI task management request.
2141  *	This routine is registered with the MPT (base) driver at driver
2142  *	load/init time via the mpt_register() API call.
2143  *
2144  *	Returns 1 indicating alloc'd request frame ptr should be freed.
2145  **/
2146 int
2147 mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
2148 {
2149 	SCSITaskMgmtReply_t	*pScsiTmReply;
2150 	SCSITaskMgmt_t		*pScsiTmReq;
2151 	MPT_SCSI_HOST		*hd;
2152 	unsigned long		 flags;
2153 	u16			 iocstatus;
2154 	u8			 tmType;
2155 	u32			 termination_count;
2156 
2157 	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TaskMgmt completed (mf=%p,mr=%p)\n",
2158 	    ioc->name, mf, mr));
2159 	if (!ioc->sh) {
2160 		dtmprintk(ioc, printk(MYIOC_s_WARN_FMT
2161 		    "TaskMgmt Complete: NULL Scsi Host Ptr\n", ioc->name));
2162 		return 1;
2163 	}
2164 
2165 	if (mr == NULL) {
2166 		dtmprintk(ioc, printk(MYIOC_s_WARN_FMT
2167 		    "ERROR! TaskMgmt Reply: NULL Request %p\n", ioc->name, mf));
2168 		return 1;
2169 	}
2170 
2171 	hd = shost_priv(ioc->sh);
2172 	pScsiTmReply = (SCSITaskMgmtReply_t*)mr;
2173 	pScsiTmReq = (SCSITaskMgmt_t*)mf;
2174 	tmType = pScsiTmReq->TaskType;
2175 	iocstatus = le16_to_cpu(pScsiTmReply->IOCStatus) & MPI_IOCSTATUS_MASK;
2176 	termination_count = le32_to_cpu(pScsiTmReply->TerminationCount);
2177 
2178 	if (ioc->facts.MsgVersion >= MPI_VERSION_01_05 &&
2179 	    pScsiTmReply->ResponseCode)
2180 		mptscsih_taskmgmt_response_code(ioc,
2181 		    pScsiTmReply->ResponseCode);
2182 	DBG_DUMP_TM_REPLY_FRAME(ioc, (u32 *)pScsiTmReply);
2183 
2184 #ifdef CONFIG_FUSION_LOGGING
2185 	if ((ioc->debug_level & MPT_DEBUG_REPLY) ||
2186 				(ioc->debug_level & MPT_DEBUG_TM ))
2187 		printk("%s: ha=%d [%d:%d:0] task_type=0x%02X "
2188 			"iocstatus=0x%04X\n\tloginfo=0x%08X response_code=0x%02X "
2189 			"term_cmnds=%d\n", __func__, ioc->id, pScsiTmReply->Bus,
2190 			 pScsiTmReply->TargetID, pScsiTmReq->TaskType,
2191 			le16_to_cpu(pScsiTmReply->IOCStatus),
2192 			le32_to_cpu(pScsiTmReply->IOCLogInfo),pScsiTmReply->ResponseCode,
2193 			le32_to_cpu(pScsiTmReply->TerminationCount));
2194 #endif
2195 	if (!iocstatus) {
2196 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT " TaskMgmt SUCCESS\n", ioc->name));
2197 			hd->abortSCpnt = NULL;
2198 		goto out;
2199 	}
2200 
2201 	/* Error?  (anything non-zero?) */
2202 
2203 	/* clear flags and continue.
2204 	 */
2205 	switch (tmType) {
2206 
2207 	case MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
2208 		if (termination_count == 1)
2209 			iocstatus = MPI_IOCSTATUS_SCSI_TASK_TERMINATED;
2210 		hd->abortSCpnt = NULL;
2211 		break;
2212 
2213 	case MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS:
2214 
2215 		/* If an internal command is present
2216 		 * or the TM failed - reload the FW.
2217 		 * FC FW may respond FAILED to an ABORT
2218 		 */
2219 		if (iocstatus == MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED ||
2220 		    hd->cmdPtr)
2221 			if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0)
2222 				printk(MYIOC_s_WARN_FMT " Firmware Reload FAILED!!\n", ioc->name);
2223 		break;
2224 
2225 	case MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
2226 	default:
2227 		break;
2228 	}
2229 
2230  out:
2231 	spin_lock_irqsave(&ioc->FreeQlock, flags);
2232 	hd->tmPending = 0;
2233 	hd->tmState = TM_STATE_NONE;
2234 	hd->tm_iocstatus = iocstatus;
2235 	spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2236 
2237 	return 1;
2238 }
2239 
2240 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2241 /*
2242  *	This is anyones guess quite frankly.
2243  */
2244 int
2245 mptscsih_bios_param(struct scsi_device * sdev, struct block_device *bdev,
2246 		sector_t capacity, int geom[])
2247 {
2248 	int		heads;
2249 	int		sectors;
2250 	sector_t	cylinders;
2251 	ulong 		dummy;
2252 
2253 	heads = 64;
2254 	sectors = 32;
2255 
2256 	dummy = heads * sectors;
2257 	cylinders = capacity;
2258 	sector_div(cylinders,dummy);
2259 
2260 	/*
2261 	 * Handle extended translation size for logical drives
2262 	 * > 1Gb
2263 	 */
2264 	if ((ulong)capacity >= 0x200000) {
2265 		heads = 255;
2266 		sectors = 63;
2267 		dummy = heads * sectors;
2268 		cylinders = capacity;
2269 		sector_div(cylinders,dummy);
2270 	}
2271 
2272 	/* return result */
2273 	geom[0] = heads;
2274 	geom[1] = sectors;
2275 	geom[2] = cylinders;
2276 
2277 	return 0;
2278 }
2279 
2280 /* Search IOC page 3 to determine if this is hidden physical disk
2281  *
2282  */
2283 int
2284 mptscsih_is_phys_disk(MPT_ADAPTER *ioc, u8 channel, u8 id)
2285 {
2286 	struct inactive_raid_component_info *component_info;
2287 	int i;
2288 	int rc = 0;
2289 
2290 	if (!ioc->raid_data.pIocPg3)
2291 		goto out;
2292 	for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
2293 		if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) &&
2294 		    (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) {
2295 			rc = 1;
2296 			goto out;
2297 		}
2298 	}
2299 
2300 	/*
2301 	 * Check inactive list for matching phys disks
2302 	 */
2303 	if (list_empty(&ioc->raid_data.inactive_list))
2304 		goto out;
2305 
2306 	mutex_lock(&ioc->raid_data.inactive_list_mutex);
2307 	list_for_each_entry(component_info, &ioc->raid_data.inactive_list,
2308 	    list) {
2309 		if ((component_info->d.PhysDiskID == id) &&
2310 		    (component_info->d.PhysDiskBus == channel))
2311 			rc = 1;
2312 	}
2313 	mutex_unlock(&ioc->raid_data.inactive_list_mutex);
2314 
2315  out:
2316 	return rc;
2317 }
2318 EXPORT_SYMBOL(mptscsih_is_phys_disk);
2319 
2320 u8
2321 mptscsih_raid_id_to_num(MPT_ADAPTER *ioc, u8 channel, u8 id)
2322 {
2323 	struct inactive_raid_component_info *component_info;
2324 	int i;
2325 	int rc = -ENXIO;
2326 
2327 	if (!ioc->raid_data.pIocPg3)
2328 		goto out;
2329 	for (i = 0; i < ioc->raid_data.pIocPg3->NumPhysDisks; i++) {
2330 		if ((id == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskID) &&
2331 		    (channel == ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskBus)) {
2332 			rc = ioc->raid_data.pIocPg3->PhysDisk[i].PhysDiskNum;
2333 			goto out;
2334 		}
2335 	}
2336 
2337 	/*
2338 	 * Check inactive list for matching phys disks
2339 	 */
2340 	if (list_empty(&ioc->raid_data.inactive_list))
2341 		goto out;
2342 
2343 	mutex_lock(&ioc->raid_data.inactive_list_mutex);
2344 	list_for_each_entry(component_info, &ioc->raid_data.inactive_list,
2345 	    list) {
2346 		if ((component_info->d.PhysDiskID == id) &&
2347 		    (component_info->d.PhysDiskBus == channel))
2348 			rc = component_info->d.PhysDiskNum;
2349 	}
2350 	mutex_unlock(&ioc->raid_data.inactive_list_mutex);
2351 
2352  out:
2353 	return rc;
2354 }
2355 EXPORT_SYMBOL(mptscsih_raid_id_to_num);
2356 
2357 /*
2358  *	OS entry point to allow for host driver to free allocated memory
2359  *	Called if no device present or device being unloaded
2360  */
2361 void
2362 mptscsih_slave_destroy(struct scsi_device *sdev)
2363 {
2364 	struct Scsi_Host	*host = sdev->host;
2365 	MPT_SCSI_HOST		*hd = shost_priv(host);
2366 	VirtTarget		*vtarget;
2367 	VirtDevice		*vdevice;
2368 	struct scsi_target 	*starget;
2369 
2370 	starget = scsi_target(sdev);
2371 	vtarget = starget->hostdata;
2372 	vdevice = sdev->hostdata;
2373 
2374 	mptscsih_search_running_cmds(hd, vdevice);
2375 	vtarget->num_luns--;
2376 	mptscsih_synchronize_cache(hd, vdevice);
2377 	kfree(vdevice);
2378 	sdev->hostdata = NULL;
2379 }
2380 
2381 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2382 /*
2383  *	mptscsih_change_queue_depth - This function will set a devices queue depth
2384  *	@sdev: per scsi_device pointer
2385  *	@qdepth: requested queue depth
2386  *
2387  *	Adding support for new 'change_queue_depth' api.
2388 */
2389 int
2390 mptscsih_change_queue_depth(struct scsi_device *sdev, int qdepth)
2391 {
2392 	MPT_SCSI_HOST		*hd = shost_priv(sdev->host);
2393 	VirtTarget 		*vtarget;
2394 	struct scsi_target 	*starget;
2395 	int			max_depth;
2396 	int			tagged;
2397 	MPT_ADAPTER		*ioc = hd->ioc;
2398 
2399 	starget = scsi_target(sdev);
2400 	vtarget = starget->hostdata;
2401 
2402 	if (ioc->bus_type == SPI) {
2403 		if (!(vtarget->tflags & MPT_TARGET_FLAGS_Q_YES))
2404 			max_depth = 1;
2405 		else if (sdev->type == TYPE_DISK &&
2406 			 vtarget->minSyncFactor <= MPT_ULTRA160)
2407 			max_depth = MPT_SCSI_CMD_PER_DEV_HIGH;
2408 		else
2409 			max_depth = MPT_SCSI_CMD_PER_DEV_LOW;
2410 	} else
2411 		max_depth = MPT_SCSI_CMD_PER_DEV_HIGH;
2412 
2413 	if (qdepth > max_depth)
2414 		qdepth = max_depth;
2415 	if (qdepth == 1)
2416 		tagged = 0;
2417 	else
2418 		tagged = MSG_SIMPLE_TAG;
2419 
2420 	scsi_adjust_queue_depth(sdev, tagged, qdepth);
2421 	return sdev->queue_depth;
2422 }
2423 
2424 /*
2425  *	OS entry point to adjust the queue_depths on a per-device basis.
2426  *	Called once per device the bus scan. Use it to force the queue_depth
2427  *	member to 1 if a device does not support Q tags.
2428  *	Return non-zero if fails.
2429  */
2430 int
2431 mptscsih_slave_configure(struct scsi_device *sdev)
2432 {
2433 	struct Scsi_Host	*sh = sdev->host;
2434 	VirtTarget		*vtarget;
2435 	VirtDevice		*vdevice;
2436 	struct scsi_target 	*starget;
2437 	MPT_SCSI_HOST		*hd = shost_priv(sh);
2438 	MPT_ADAPTER		*ioc = hd->ioc;
2439 
2440 	starget = scsi_target(sdev);
2441 	vtarget = starget->hostdata;
2442 	vdevice = sdev->hostdata;
2443 
2444 	dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2445 		"device @ %p, channel=%d, id=%d, lun=%d\n",
2446 		ioc->name, sdev, sdev->channel, sdev->id, sdev->lun));
2447 	if (ioc->bus_type == SPI)
2448 		dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2449 		    "sdtr %d wdtr %d ppr %d inq length=%d\n",
2450 		    ioc->name, sdev->sdtr, sdev->wdtr,
2451 		    sdev->ppr, sdev->inquiry_len));
2452 
2453 	vdevice->configured_lun = 1;
2454 	mptscsih_change_queue_depth(sdev, MPT_SCSI_CMD_PER_DEV_HIGH);
2455 
2456 	dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2457 		"Queue depth=%d, tflags=%x\n",
2458 		ioc->name, sdev->queue_depth, vtarget->tflags));
2459 
2460 	if (ioc->bus_type == SPI)
2461 		dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2462 		    "negoFlags=%x, maxOffset=%x, SyncFactor=%x\n",
2463 		    ioc->name, vtarget->negoFlags, vtarget->maxOffset,
2464 		    vtarget->minSyncFactor));
2465 
2466 	dsprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2467 		"tagged %d, simple %d, ordered %d\n",
2468 		ioc->name,sdev->tagged_supported, sdev->simple_tags,
2469 		sdev->ordered_tags));
2470 
2471 	return 0;
2472 }
2473 
2474 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2475 /*
2476  *  Private routines...
2477  */
2478 
2479 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2480 /* Utility function to copy sense data from the scsi_cmnd buffer
2481  * to the FC and SCSI target structures.
2482  *
2483  */
2484 static void
2485 mptscsih_copy_sense_data(struct scsi_cmnd *sc, MPT_SCSI_HOST *hd, MPT_FRAME_HDR *mf, SCSIIOReply_t *pScsiReply)
2486 {
2487 	VirtDevice	*vdevice;
2488 	SCSIIORequest_t	*pReq;
2489 	u32		 sense_count = le32_to_cpu(pScsiReply->SenseCount);
2490 	MPT_ADAPTER 	*ioc = hd->ioc;
2491 
2492 	/* Get target structure
2493 	 */
2494 	pReq = (SCSIIORequest_t *) mf;
2495 	vdevice = sc->device->hostdata;
2496 
2497 	if (sense_count) {
2498 		u8 *sense_data;
2499 		int req_index;
2500 
2501 		/* Copy the sense received into the scsi command block. */
2502 		req_index = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2503 		sense_data = ((u8 *)ioc->sense_buf_pool + (req_index * MPT_SENSE_BUFFER_ALLOC));
2504 		memcpy(sc->sense_buffer, sense_data, SNS_LEN(sc));
2505 
2506 		/* Log SMART data (asc = 0x5D, non-IM case only) if required.
2507 		 */
2508 		if ((ioc->events) && (ioc->eventTypes & (1 << MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE))) {
2509 			if ((sense_data[12] == 0x5D) && (vdevice->vtarget->raidVolume == 0)) {
2510 				int idx;
2511 
2512 				idx = ioc->eventContext % MPTCTL_EVENT_LOG_SIZE;
2513 				ioc->events[idx].event = MPI_EVENT_SCSI_DEVICE_STATUS_CHANGE;
2514 				ioc->events[idx].eventContext = ioc->eventContext;
2515 
2516 				ioc->events[idx].data[0] = (pReq->LUN[1] << 24) |
2517 					(MPI_EVENT_SCSI_DEV_STAT_RC_SMART_DATA << 16) |
2518 					(sc->device->channel << 8) | sc->device->id;
2519 
2520 				ioc->events[idx].data[1] = (sense_data[13] << 8) | sense_data[12];
2521 
2522 				ioc->eventContext++;
2523 				if (ioc->pcidev->vendor ==
2524 				    PCI_VENDOR_ID_IBM) {
2525 					mptscsih_issue_sep_command(ioc,
2526 					    vdevice->vtarget, MPI_SEP_REQ_SLOTSTATUS_PREDICTED_FAULT);
2527 					vdevice->vtarget->tflags |=
2528 					    MPT_TARGET_FLAGS_LED_ON;
2529 				}
2530 			}
2531 		}
2532 	} else {
2533 		dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Hmmm... SenseData len=0! (?)\n",
2534 				ioc->name));
2535 	}
2536 }
2537 
2538 /**
2539  * mptscsih_get_scsi_lookup
2540  * @ioc: Pointer to MPT_ADAPTER structure
2541  * @i: index into the array
2542  *
2543  * retrieves scmd entry from ScsiLookup[] array list
2544  *
2545  * Returns the scsi_cmd pointer
2546  **/
2547 static struct scsi_cmnd *
2548 mptscsih_get_scsi_lookup(MPT_ADAPTER *ioc, int i)
2549 {
2550 	unsigned long	flags;
2551 	struct scsi_cmnd *scmd;
2552 
2553 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2554 	scmd = ioc->ScsiLookup[i];
2555 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2556 
2557 	return scmd;
2558 }
2559 
2560 /**
2561  * mptscsih_getclear_scsi_lookup
2562  * @ioc: Pointer to MPT_ADAPTER structure
2563  * @i: index into the array
2564  *
2565  * retrieves and clears scmd entry from ScsiLookup[] array list
2566  *
2567  * Returns the scsi_cmd pointer
2568  **/
2569 static struct scsi_cmnd *
2570 mptscsih_getclear_scsi_lookup(MPT_ADAPTER *ioc, int i)
2571 {
2572 	unsigned long	flags;
2573 	struct scsi_cmnd *scmd;
2574 
2575 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2576 	scmd = ioc->ScsiLookup[i];
2577 	ioc->ScsiLookup[i] = NULL;
2578 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2579 
2580 	return scmd;
2581 }
2582 
2583 /**
2584  * mptscsih_set_scsi_lookup
2585  *
2586  * writes a scmd entry into the ScsiLookup[] array list
2587  *
2588  * @ioc: Pointer to MPT_ADAPTER structure
2589  * @i: index into the array
2590  * @scmd: scsi_cmnd pointer
2591  *
2592  **/
2593 static void
2594 mptscsih_set_scsi_lookup(MPT_ADAPTER *ioc, int i, struct scsi_cmnd *scmd)
2595 {
2596 	unsigned long	flags;
2597 
2598 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2599 	ioc->ScsiLookup[i] = scmd;
2600 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2601 }
2602 
2603 /**
2604  * SCPNT_TO_LOOKUP_IDX - searches for a given scmd in the ScsiLookup[] array list
2605  * @ioc: Pointer to MPT_ADAPTER structure
2606  * @sc: scsi_cmnd pointer
2607  */
2608 static int
2609 SCPNT_TO_LOOKUP_IDX(MPT_ADAPTER *ioc, struct scsi_cmnd *sc)
2610 {
2611 	unsigned long	flags;
2612 	int i, index=-1;
2613 
2614 	spin_lock_irqsave(&ioc->scsi_lookup_lock, flags);
2615 	for (i = 0; i < ioc->req_depth; i++) {
2616 		if (ioc->ScsiLookup[i] == sc) {
2617 			index = i;
2618 			goto out;
2619 		}
2620 	}
2621 
2622  out:
2623 	spin_unlock_irqrestore(&ioc->scsi_lookup_lock, flags);
2624 	return index;
2625 }
2626 
2627 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2628 int
2629 mptscsih_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
2630 {
2631 	MPT_SCSI_HOST	*hd;
2632 	unsigned long	 flags;
2633 
2634 	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
2635 	    ": IOC %s_reset routed to SCSI host driver!\n",
2636 	    ioc->name, reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
2637 	    reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
2638 
2639 	/* If a FW reload request arrives after base installed but
2640 	 * before all scsi hosts have been attached, then an alt_ioc
2641 	 * may have a NULL sh pointer.
2642 	 */
2643 	if (ioc->sh == NULL || shost_priv(ioc->sh) == NULL)
2644 		return 0;
2645 	else
2646 		hd = shost_priv(ioc->sh);
2647 
2648 	if (reset_phase == MPT_IOC_SETUP_RESET) {
2649 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Setup-Diag Reset\n", ioc->name));
2650 
2651 		/* Clean Up:
2652 		 * 1. Set Hard Reset Pending Flag
2653 		 * All new commands go to doneQ
2654 		 */
2655 		hd->resetPending = 1;
2656 
2657 	} else if (reset_phase == MPT_IOC_PRE_RESET) {
2658 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Pre-Diag Reset\n", ioc->name));
2659 
2660 		/* 2. Flush running commands
2661 		 *	Clean ScsiLookup (and associated memory)
2662 		 *	AND clean mytaskQ
2663 		 */
2664 
2665 		/* 2b. Reply to OS all known outstanding I/O commands.
2666 		 */
2667 		mptscsih_flush_running_cmds(hd);
2668 
2669 		/* 2c. If there was an internal command that
2670 		 * has not completed, configuration or io request,
2671 		 * free these resources.
2672 		 */
2673 		if (hd->cmdPtr) {
2674 			del_timer(&hd->timer);
2675 			mpt_free_msg_frame(ioc, hd->cmdPtr);
2676 		}
2677 
2678 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Pre-Reset complete.\n", ioc->name));
2679 
2680 	} else {
2681 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Post-Diag Reset\n", ioc->name));
2682 
2683 		/* Once a FW reload begins, all new OS commands are
2684 		 * redirected to the doneQ w/ a reset status.
2685 		 * Init all control structures.
2686 		 */
2687 
2688 		/* 2. Chain Buffer initialization
2689 		 */
2690 
2691 		/* 4. Renegotiate to all devices, if SPI
2692 		 */
2693 
2694 		/* 5. Enable new commands to be posted
2695 		 */
2696 		spin_lock_irqsave(&ioc->FreeQlock, flags);
2697 		hd->tmPending = 0;
2698 		spin_unlock_irqrestore(&ioc->FreeQlock, flags);
2699 		hd->resetPending = 0;
2700 		hd->tmState = TM_STATE_NONE;
2701 
2702 		/* 6. If there was an internal command,
2703 		 * wake this process up.
2704 		 */
2705 		if (hd->cmdPtr) {
2706 			/*
2707 			 * Wake up the original calling thread
2708 			 */
2709 			hd->pLocal = &hd->localReply;
2710 			hd->pLocal->completion = MPT_SCANDV_DID_RESET;
2711 			hd->scandv_wait_done = 1;
2712 			wake_up(&hd->scandv_waitq);
2713 			hd->cmdPtr = NULL;
2714 		}
2715 
2716 		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Post-Reset complete.\n", ioc->name));
2717 
2718 	}
2719 
2720 	return 1;		/* currently means nothing really */
2721 }
2722 
2723 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2724 int
2725 mptscsih_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
2726 {
2727 	MPT_SCSI_HOST *hd;
2728 	u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
2729 
2730 	devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
2731 			ioc->name, event));
2732 
2733 	if (ioc->sh == NULL ||
2734 		((hd = shost_priv(ioc->sh)) == NULL))
2735 		return 1;
2736 
2737 	switch (event) {
2738 	case MPI_EVENT_UNIT_ATTENTION:			/* 03 */
2739 		/* FIXME! */
2740 		break;
2741 	case MPI_EVENT_IOC_BUS_RESET:			/* 04 */
2742 	case MPI_EVENT_EXT_BUS_RESET:			/* 05 */
2743 		if (hd && (ioc->bus_type == SPI) && (hd->soft_resets < -1))
2744 			hd->soft_resets++;
2745 		break;
2746 	case MPI_EVENT_LOGOUT:				/* 09 */
2747 		/* FIXME! */
2748 		break;
2749 
2750 	case MPI_EVENT_RESCAN:				/* 06 */
2751 		break;
2752 
2753 		/*
2754 		 *  CHECKME! Don't think we need to do
2755 		 *  anything for these, but...
2756 		 */
2757 	case MPI_EVENT_LINK_STATUS_CHANGE:		/* 07 */
2758 	case MPI_EVENT_LOOP_STATE_CHANGE:		/* 08 */
2759 		/*
2760 		 *  CHECKME!  Falling thru...
2761 		 */
2762 		break;
2763 
2764 	case MPI_EVENT_INTEGRATED_RAID:			/* 0B */
2765 		break;
2766 
2767 	case MPI_EVENT_NONE:				/* 00 */
2768 	case MPI_EVENT_LOG_DATA:			/* 01 */
2769 	case MPI_EVENT_STATE_CHANGE:			/* 02 */
2770 	case MPI_EVENT_EVENT_CHANGE:			/* 0A */
2771 	default:
2772 		dprintk(ioc, printk(MYIOC_s_DEBUG_FMT ": Ignoring event (=%02Xh)\n",
2773 		    ioc->name, event));
2774 		break;
2775 	}
2776 
2777 	return 1;		/* currently means nothing really */
2778 }
2779 
2780 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2781 /*
2782  *  Bus Scan and Domain Validation functionality ...
2783  */
2784 
2785 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2786 /*
2787  *	mptscsih_scandv_complete - Scan and DV callback routine registered
2788  *	to Fustion MPT (base) driver.
2789  *
2790  *	@ioc: Pointer to MPT_ADAPTER structure
2791  *	@mf: Pointer to original MPT request frame
2792  *	@mr: Pointer to MPT reply frame (NULL if TurboReply)
2793  *
2794  *	This routine is called from mpt.c::mpt_interrupt() at the completion
2795  *	of any SCSI IO request.
2796  *	This routine is registered with the Fusion MPT (base) driver at driver
2797  *	load/init time via the mpt_register() API call.
2798  *
2799  *	Returns 1 indicating alloc'd request frame ptr should be freed.
2800  *
2801  *	Remark: Sets a completion code and (possibly) saves sense data
2802  *	in the IOC member localReply structure.
2803  *	Used ONLY for DV and other internal commands.
2804  */
2805 int
2806 mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
2807 {
2808 	MPT_SCSI_HOST	*hd;
2809 	SCSIIORequest_t *pReq;
2810 	int		 completionCode;
2811 	u16		 req_idx;
2812 
2813 	hd = shost_priv(ioc->sh);
2814 
2815 	if ((mf == NULL) ||
2816 	    (mf >= MPT_INDEX_2_MFPTR(ioc, ioc->req_depth))) {
2817 		printk(MYIOC_s_ERR_FMT
2818 			"ScanDvComplete, %s req frame ptr! (=%p)\n",
2819 				ioc->name, mf?"BAD":"NULL", (void *) mf);
2820 		goto wakeup;
2821 	}
2822 
2823 	del_timer(&hd->timer);
2824 	req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
2825 	mptscsih_set_scsi_lookup(ioc, req_idx, NULL);
2826 	pReq = (SCSIIORequest_t *) mf;
2827 
2828 	if (mf != hd->cmdPtr) {
2829 		printk(MYIOC_s_WARN_FMT "ScanDvComplete (mf=%p, cmdPtr=%p, idx=%d)\n",
2830 				ioc->name, (void *)mf, (void *) hd->cmdPtr, req_idx);
2831 	}
2832 	hd->cmdPtr = NULL;
2833 
2834 	ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "ScanDvComplete (mf=%p,mr=%p,idx=%d)\n",
2835 			ioc->name, mf, mr, req_idx));
2836 
2837 	hd->pLocal = &hd->localReply;
2838 	hd->pLocal->scsiStatus = 0;
2839 
2840 	/* If target struct exists, clear sense valid flag.
2841 	 */
2842 	if (mr == NULL) {
2843 		completionCode = MPT_SCANDV_GOOD;
2844 	} else {
2845 		SCSIIOReply_t	*pReply;
2846 		u16		 status;
2847 		u8		 scsi_status;
2848 
2849 		pReply = (SCSIIOReply_t *) mr;
2850 
2851 		status = le16_to_cpu(pReply->IOCStatus) & MPI_IOCSTATUS_MASK;
2852 		scsi_status = pReply->SCSIStatus;
2853 
2854 
2855 		switch(status) {
2856 
2857 		case MPI_IOCSTATUS_SCSI_DEVICE_NOT_THERE:	/* 0x0043 */
2858 			completionCode = MPT_SCANDV_SELECTION_TIMEOUT;
2859 			break;
2860 
2861 		case MPI_IOCSTATUS_SCSI_IO_DATA_ERROR:		/* 0x0046 */
2862 		case MPI_IOCSTATUS_SCSI_TASK_TERMINATED:	/* 0x0048 */
2863 		case MPI_IOCSTATUS_SCSI_IOC_TERMINATED:		/* 0x004B */
2864 		case MPI_IOCSTATUS_SCSI_EXT_TERMINATED:		/* 0x004C */
2865 			completionCode = MPT_SCANDV_DID_RESET;
2866 			break;
2867 
2868 		case MPI_IOCSTATUS_SCSI_DATA_UNDERRUN:		/* 0x0045 */
2869 		case MPI_IOCSTATUS_SCSI_RECOVERED_ERROR:	/* 0x0040 */
2870 		case MPI_IOCSTATUS_SUCCESS:			/* 0x0000 */
2871 			if (pReply->Function == MPI_FUNCTION_CONFIG) {
2872 				ConfigReply_t *pr = (ConfigReply_t *)mr;
2873 				completionCode = MPT_SCANDV_GOOD;
2874 				hd->pLocal->header.PageVersion = pr->Header.PageVersion;
2875 				hd->pLocal->header.PageLength = pr->Header.PageLength;
2876 				hd->pLocal->header.PageNumber = pr->Header.PageNumber;
2877 				hd->pLocal->header.PageType = pr->Header.PageType;
2878 
2879 			} else if (pReply->Function == MPI_FUNCTION_RAID_ACTION) {
2880 				/* If the RAID Volume request is successful,
2881 				 * return GOOD, else indicate that
2882 				 * some type of error occurred.
2883 				 */
2884 				MpiRaidActionReply_t	*pr = (MpiRaidActionReply_t *)mr;
2885 				if (le16_to_cpu(pr->ActionStatus) == MPI_RAID_ACTION_ASTATUS_SUCCESS)
2886 					completionCode = MPT_SCANDV_GOOD;
2887 				else
2888 					completionCode = MPT_SCANDV_SOME_ERROR;
2889 				memcpy(hd->pLocal->sense, pr, sizeof(hd->pLocal->sense));
2890 
2891 			} else if (pReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_VALID) {
2892 				u8		*sense_data;
2893 				int		 sz;
2894 
2895 				/* save sense data in global structure
2896 				 */
2897 				completionCode = MPT_SCANDV_SENSE;
2898 				hd->pLocal->scsiStatus = scsi_status;
2899 				sense_data = ((u8 *)ioc->sense_buf_pool +
2900 					(req_idx * MPT_SENSE_BUFFER_ALLOC));
2901 
2902 				sz = min_t(int, pReq->SenseBufferLength,
2903 							SCSI_STD_SENSE_BYTES);
2904 				memcpy(hd->pLocal->sense, sense_data, sz);
2905 
2906 				ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "  Check Condition, sense ptr %p\n",
2907 				    ioc->name, sense_data));
2908 			} else if (pReply->SCSIState & MPI_SCSI_STATE_AUTOSENSE_FAILED) {
2909 				if (pReq->CDB[0] == INQUIRY)
2910 					completionCode = MPT_SCANDV_ISSUE_SENSE;
2911 				else
2912 					completionCode = MPT_SCANDV_DID_RESET;
2913 			}
2914 			else if (pReply->SCSIState & MPI_SCSI_STATE_NO_SCSI_STATUS)
2915 				completionCode = MPT_SCANDV_DID_RESET;
2916 			else if (pReply->SCSIState & MPI_SCSI_STATE_TERMINATED)
2917 				completionCode = MPT_SCANDV_DID_RESET;
2918 			else {
2919 				completionCode = MPT_SCANDV_GOOD;
2920 				hd->pLocal->scsiStatus = scsi_status;
2921 			}
2922 			break;
2923 
2924 		case MPI_IOCSTATUS_SCSI_PROTOCOL_ERROR:		/* 0x0047 */
2925 			if (pReply->SCSIState & MPI_SCSI_STATE_TERMINATED)
2926 				completionCode = MPT_SCANDV_DID_RESET;
2927 			else
2928 				completionCode = MPT_SCANDV_SOME_ERROR;
2929 			break;
2930 
2931 		default:
2932 			completionCode = MPT_SCANDV_SOME_ERROR;
2933 			break;
2934 
2935 		}	/* switch(status) */
2936 
2937 	} /* end of address reply case */
2938 
2939 	hd->pLocal->completion = completionCode;
2940 
2941 	/* MF and RF are freed in mpt_interrupt
2942 	 */
2943 wakeup:
2944 	/* Free Chain buffers (will never chain) in scan or dv */
2945 	//mptscsih_freeChainBuffers(ioc, req_idx);
2946 
2947 	/*
2948 	 * Wake up the original calling thread
2949 	 */
2950 	hd->scandv_wait_done = 1;
2951 	wake_up(&hd->scandv_waitq);
2952 
2953 	return 1;
2954 }
2955 
2956 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
2957 /*	mptscsih_timer_expired - Call back for timer process.
2958  *	Used only for dv functionality.
2959  *	@data: Pointer to MPT_SCSI_HOST recast as an unsigned long
2960  *
2961  */
2962 void
2963 mptscsih_timer_expired(unsigned long data)
2964 {
2965 	MPT_SCSI_HOST *hd = (MPT_SCSI_HOST *) data;
2966 	MPT_ADAPTER 	*ioc = hd->ioc;
2967 
2968 	ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Timer Expired! Cmd %p\n", ioc->name, hd->cmdPtr));
2969 
2970 	if (hd->cmdPtr) {
2971 		MPIHeader_t *cmd = (MPIHeader_t *)hd->cmdPtr;
2972 
2973 		if (cmd->Function == MPI_FUNCTION_SCSI_IO_REQUEST) {
2974 			/* Desire to issue a task management request here.
2975 			 * TM requests MUST be single threaded.
2976 			 * If old eh code and no TM current, issue request.
2977 			 * If new eh code, do nothing. Wait for OS cmd timeout
2978 			 *	for bus reset.
2979 			 */
2980 		} else {
2981 			/* Perform a FW reload */
2982 			if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0) {
2983 				printk(MYIOC_s_WARN_FMT "Firmware Reload FAILED!\n", ioc->name);
2984 			}
2985 		}
2986 	} else {
2987 		/* This should NEVER happen */
2988 		printk(MYIOC_s_WARN_FMT "Null cmdPtr!!!!\n", ioc->name);
2989 	}
2990 
2991 	/* No more processing.
2992 	 * TM call will generate an interrupt for SCSI TM Management.
2993 	 * The FW will reply to all outstanding commands, callback will finish cleanup.
2994 	 * Hard reset clean-up will free all resources.
2995 	 */
2996 	ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Timer Expired Complete!\n", ioc->name));
2997 
2998 	return;
2999 }
3000 
3001 
3002 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3003 /**
3004  *	mptscsih_do_cmd - Do internal command.
3005  *	@hd: MPT_SCSI_HOST pointer
3006  *	@io: INTERNAL_CMD pointer.
3007  *
3008  *	Issue the specified internally generated command and do command
3009  *	specific cleanup. For bus scan / DV only.
3010  *	NOTES: If command is Inquiry and status is good,
3011  *	initialize a target structure, save the data
3012  *
3013  *	Remark: Single threaded access only.
3014  *
3015  *	Return:
3016  *		< 0 if an illegal command or no resources
3017  *
3018  *		   0 if good
3019  *
3020  *		 > 0 if command complete but some type of completion error.
3021  */
3022 static int
3023 mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *io)
3024 {
3025 	MPT_FRAME_HDR	*mf;
3026 	SCSIIORequest_t	*pScsiReq;
3027 	SCSIIORequest_t	 ReqCopy;
3028 	int		 my_idx, ii, dir;
3029 	int		 rc, cmdTimeout;
3030 	int		in_isr;
3031 	char		 cmdLen;
3032 	char		 CDB[]={0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0};
3033 	char		 cmd = io->cmd;
3034 	MPT_ADAPTER 	*ioc = hd->ioc;
3035 
3036 	in_isr = in_interrupt();
3037 	if (in_isr) {
3038 		dprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Internal SCSI IO request not allowed in ISR context!\n",
3039 					ioc->name));
3040 		return -EPERM;
3041 	}
3042 
3043 
3044 	/* Set command specific information
3045 	 */
3046 	switch (cmd) {
3047 	case INQUIRY:
3048 		cmdLen = 6;
3049 		dir = MPI_SCSIIO_CONTROL_READ;
3050 		CDB[0] = cmd;
3051 		CDB[4] = io->size;
3052 		cmdTimeout = 10;
3053 		break;
3054 
3055 	case TEST_UNIT_READY:
3056 		cmdLen = 6;
3057 		dir = MPI_SCSIIO_CONTROL_READ;
3058 		cmdTimeout = 10;
3059 		break;
3060 
3061 	case START_STOP:
3062 		cmdLen = 6;
3063 		dir = MPI_SCSIIO_CONTROL_READ;
3064 		CDB[0] = cmd;
3065 		CDB[4] = 1;	/*Spin up the disk */
3066 		cmdTimeout = 15;
3067 		break;
3068 
3069 	case REQUEST_SENSE:
3070 		cmdLen = 6;
3071 		CDB[0] = cmd;
3072 		CDB[4] = io->size;
3073 		dir = MPI_SCSIIO_CONTROL_READ;
3074 		cmdTimeout = 10;
3075 		break;
3076 
3077 	case READ_BUFFER:
3078 		cmdLen = 10;
3079 		dir = MPI_SCSIIO_CONTROL_READ;
3080 		CDB[0] = cmd;
3081 		if (io->flags & MPT_ICFLAG_ECHO) {
3082 			CDB[1] = 0x0A;
3083 		} else {
3084 			CDB[1] = 0x02;
3085 		}
3086 
3087 		if (io->flags & MPT_ICFLAG_BUF_CAP) {
3088 			CDB[1] |= 0x01;
3089 		}
3090 		CDB[6] = (io->size >> 16) & 0xFF;
3091 		CDB[7] = (io->size >>  8) & 0xFF;
3092 		CDB[8] = io->size & 0xFF;
3093 		cmdTimeout = 10;
3094 		break;
3095 
3096 	case WRITE_BUFFER:
3097 		cmdLen = 10;
3098 		dir = MPI_SCSIIO_CONTROL_WRITE;
3099 		CDB[0] = cmd;
3100 		if (io->flags & MPT_ICFLAG_ECHO) {
3101 			CDB[1] = 0x0A;
3102 		} else {
3103 			CDB[1] = 0x02;
3104 		}
3105 		CDB[6] = (io->size >> 16) & 0xFF;
3106 		CDB[7] = (io->size >>  8) & 0xFF;
3107 		CDB[8] = io->size & 0xFF;
3108 		cmdTimeout = 10;
3109 		break;
3110 
3111 	case RESERVE:
3112 		cmdLen = 6;
3113 		dir = MPI_SCSIIO_CONTROL_READ;
3114 		CDB[0] = cmd;
3115 		cmdTimeout = 10;
3116 		break;
3117 
3118 	case RELEASE:
3119 		cmdLen = 6;
3120 		dir = MPI_SCSIIO_CONTROL_READ;
3121 		CDB[0] = cmd;
3122 		cmdTimeout = 10;
3123 		break;
3124 
3125 	case SYNCHRONIZE_CACHE:
3126 		cmdLen = 10;
3127 		dir = MPI_SCSIIO_CONTROL_READ;
3128 		CDB[0] = cmd;
3129 //		CDB[1] = 0x02;	/* set immediate bit */
3130 		cmdTimeout = 10;
3131 		break;
3132 
3133 	default:
3134 		/* Error Case */
3135 		return -EFAULT;
3136 	}
3137 
3138 	/* Get and Populate a free Frame
3139 	 */
3140 	if ((mf = mpt_get_msg_frame(ioc->InternalCtx, ioc)) == NULL) {
3141 		dfailprintk(ioc, printk(MYIOC_s_WARN_FMT "No msg frames!\n",
3142 		    ioc->name));
3143 		return -EBUSY;
3144 	}
3145 
3146 	pScsiReq = (SCSIIORequest_t *) mf;
3147 
3148 	/* Get the request index */
3149 	my_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
3150 	ADD_INDEX_LOG(my_idx); /* for debug */
3151 
3152 	if (io->flags & MPT_ICFLAG_PHYS_DISK) {
3153 		pScsiReq->TargetID = io->physDiskNum;
3154 		pScsiReq->Bus = 0;
3155 		pScsiReq->ChainOffset = 0;
3156 		pScsiReq->Function = MPI_FUNCTION_RAID_SCSI_IO_PASSTHROUGH;
3157 	} else {
3158 		pScsiReq->TargetID = io->id;
3159 		pScsiReq->Bus = io->channel;
3160 		pScsiReq->ChainOffset = 0;
3161 		pScsiReq->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
3162 	}
3163 
3164 	pScsiReq->CDBLength = cmdLen;
3165 	pScsiReq->SenseBufferLength = MPT_SENSE_BUFFER_SIZE;
3166 
3167 	pScsiReq->Reserved = 0;
3168 
3169 	pScsiReq->MsgFlags = mpt_msg_flags();
3170 	/* MsgContext set in mpt_get_msg_fram call  */
3171 
3172 	int_to_scsilun(io->lun, (struct scsi_lun *)pScsiReq->LUN);
3173 
3174 	if (io->flags & MPT_ICFLAG_TAGGED_CMD)
3175 		pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_SIMPLEQ);
3176 	else
3177 		pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_UNTAGGED);
3178 
3179 	if (cmd == REQUEST_SENSE) {
3180 		pScsiReq->Control = cpu_to_le32(dir | MPI_SCSIIO_CONTROL_UNTAGGED);
3181 		ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Untagged! 0x%2x\n",
3182 			ioc->name, cmd));
3183 	}
3184 
3185 	for (ii=0; ii < 16; ii++)
3186 		pScsiReq->CDB[ii] = CDB[ii];
3187 
3188 	pScsiReq->DataLength = cpu_to_le32(io->size);
3189 	pScsiReq->SenseBufferLowAddr = cpu_to_le32(ioc->sense_buf_low_dma
3190 					   + (my_idx * MPT_SENSE_BUFFER_ALLOC));
3191 
3192 	ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Sending Command 0x%x for (%d:%d:%d)\n",
3193 			ioc->name, cmd, io->channel, io->id, io->lun));
3194 
3195 	if (dir == MPI_SCSIIO_CONTROL_READ) {
3196 		mpt_add_sge((char *) &pScsiReq->SGL,
3197 			MPT_SGE_FLAGS_SSIMPLE_READ | io->size,
3198 			io->data_dma);
3199 	} else {
3200 		mpt_add_sge((char *) &pScsiReq->SGL,
3201 			MPT_SGE_FLAGS_SSIMPLE_WRITE | io->size,
3202 			io->data_dma);
3203 	}
3204 
3205 	/* The ISR will free the request frame, but we need
3206 	 * the information to initialize the target. Duplicate.
3207 	 */
3208 	memcpy(&ReqCopy, pScsiReq, sizeof(SCSIIORequest_t));
3209 
3210 	/* Issue this command after:
3211 	 *	finish init
3212 	 *	add timer
3213 	 * Wait until the reply has been received
3214 	 *  ScsiScanDvCtx callback function will
3215 	 *	set hd->pLocal;
3216 	 *	set scandv_wait_done and call wake_up
3217 	 */
3218 	hd->pLocal = NULL;
3219 	hd->timer.expires = jiffies + HZ*cmdTimeout;
3220 	hd->scandv_wait_done = 0;
3221 
3222 	/* Save cmd pointer, for resource free if timeout or
3223 	 * FW reload occurs
3224 	 */
3225 	hd->cmdPtr = mf;
3226 
3227 	add_timer(&hd->timer);
3228 	mpt_put_msg_frame(ioc->InternalCtx, ioc, mf);
3229 	wait_event(hd->scandv_waitq, hd->scandv_wait_done);
3230 
3231 	if (hd->pLocal) {
3232 		rc = hd->pLocal->completion;
3233 		hd->pLocal->skip = 0;
3234 
3235 		/* Always set fatal error codes in some cases.
3236 		 */
3237 		if (rc == MPT_SCANDV_SELECTION_TIMEOUT)
3238 			rc = -ENXIO;
3239 		else if (rc == MPT_SCANDV_SOME_ERROR)
3240 			rc =  -rc;
3241 	} else {
3242 		rc = -EFAULT;
3243 		/* This should never happen. */
3244 		ddvprintk(ioc, printk(MYIOC_s_DEBUG_FMT "_do_cmd: Null pLocal!!!\n",
3245 				ioc->name));
3246 	}
3247 
3248 	return rc;
3249 }
3250 
3251 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3252 /**
3253  *	mptscsih_synchronize_cache - Send SYNCHRONIZE_CACHE to all disks.
3254  *	@hd: Pointer to a SCSI HOST structure
3255  *	@vdevice: virtual target device
3256  *
3257  *	Uses the ISR, but with special processing.
3258  *	MUST be single-threaded.
3259  *
3260  */
3261 static void
3262 mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice *vdevice)
3263 {
3264 	INTERNAL_CMD		 iocmd;
3265 
3266 	/* Ignore hidden raid components, this is handled when the command
3267 	 * is sent to the volume
3268 	 */
3269 	if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT)
3270 		return;
3271 
3272 	if (vdevice->vtarget->type != TYPE_DISK || vdevice->vtarget->deleted ||
3273 	    !vdevice->configured_lun)
3274 		return;
3275 
3276 	/* Following parameters will not change
3277 	 * in this routine.
3278 	 */
3279 	iocmd.cmd = SYNCHRONIZE_CACHE;
3280 	iocmd.flags = 0;
3281 	iocmd.physDiskNum = -1;
3282 	iocmd.data = NULL;
3283 	iocmd.data_dma = -1;
3284 	iocmd.size = 0;
3285 	iocmd.rsvd = iocmd.rsvd2 = 0;
3286 	iocmd.channel = vdevice->vtarget->channel;
3287 	iocmd.id = vdevice->vtarget->id;
3288 	iocmd.lun = vdevice->lun;
3289 
3290 	mptscsih_do_cmd(hd, &iocmd);
3291 }
3292 
3293 static ssize_t
3294 mptscsih_version_fw_show(struct device *dev, struct device_attribute *attr,
3295 			 char *buf)
3296 {
3297 	struct Scsi_Host *host = class_to_shost(dev);
3298 	MPT_SCSI_HOST	*hd = shost_priv(host);
3299 	MPT_ADAPTER *ioc = hd->ioc;
3300 
3301 	return snprintf(buf, PAGE_SIZE, "%02d.%02d.%02d.%02d\n",
3302 	    (ioc->facts.FWVersion.Word & 0xFF000000) >> 24,
3303 	    (ioc->facts.FWVersion.Word & 0x00FF0000) >> 16,
3304 	    (ioc->facts.FWVersion.Word & 0x0000FF00) >> 8,
3305 	    ioc->facts.FWVersion.Word & 0x000000FF);
3306 }
3307 static DEVICE_ATTR(version_fw, S_IRUGO, mptscsih_version_fw_show, NULL);
3308 
3309 static ssize_t
3310 mptscsih_version_bios_show(struct device *dev, struct device_attribute *attr,
3311 			   char *buf)
3312 {
3313 	struct Scsi_Host *host = class_to_shost(dev);
3314 	MPT_SCSI_HOST	*hd = shost_priv(host);
3315 	MPT_ADAPTER *ioc = hd->ioc;
3316 
3317 	return snprintf(buf, PAGE_SIZE, "%02x.%02x.%02x.%02x\n",
3318 	    (ioc->biosVersion & 0xFF000000) >> 24,
3319 	    (ioc->biosVersion & 0x00FF0000) >> 16,
3320 	    (ioc->biosVersion & 0x0000FF00) >> 8,
3321 	    ioc->biosVersion & 0x000000FF);
3322 }
3323 static DEVICE_ATTR(version_bios, S_IRUGO, mptscsih_version_bios_show, NULL);
3324 
3325 static ssize_t
3326 mptscsih_version_mpi_show(struct device *dev, struct device_attribute *attr,
3327 			  char *buf)
3328 {
3329 	struct Scsi_Host *host = class_to_shost(dev);
3330 	MPT_SCSI_HOST	*hd = shost_priv(host);
3331 	MPT_ADAPTER *ioc = hd->ioc;
3332 
3333 	return snprintf(buf, PAGE_SIZE, "%03x\n", ioc->facts.MsgVersion);
3334 }
3335 static DEVICE_ATTR(version_mpi, S_IRUGO, mptscsih_version_mpi_show, NULL);
3336 
3337 static ssize_t
3338 mptscsih_version_product_show(struct device *dev,
3339 			      struct device_attribute *attr,
3340 char *buf)
3341 {
3342 	struct Scsi_Host *host = class_to_shost(dev);
3343 	MPT_SCSI_HOST	*hd = shost_priv(host);
3344 	MPT_ADAPTER *ioc = hd->ioc;
3345 
3346 	return snprintf(buf, PAGE_SIZE, "%s\n", ioc->prod_name);
3347 }
3348 static DEVICE_ATTR(version_product, S_IRUGO,
3349     mptscsih_version_product_show, NULL);
3350 
3351 static ssize_t
3352 mptscsih_version_nvdata_persistent_show(struct device *dev,
3353 					struct device_attribute *attr,
3354 					char *buf)
3355 {
3356 	struct Scsi_Host *host = class_to_shost(dev);
3357 	MPT_SCSI_HOST	*hd = shost_priv(host);
3358 	MPT_ADAPTER *ioc = hd->ioc;
3359 
3360 	return snprintf(buf, PAGE_SIZE, "%02xh\n",
3361 	    ioc->nvdata_version_persistent);
3362 }
3363 static DEVICE_ATTR(version_nvdata_persistent, S_IRUGO,
3364     mptscsih_version_nvdata_persistent_show, NULL);
3365 
3366 static ssize_t
3367 mptscsih_version_nvdata_default_show(struct device *dev,
3368 				     struct device_attribute *attr, char *buf)
3369 {
3370 	struct Scsi_Host *host = class_to_shost(dev);
3371 	MPT_SCSI_HOST	*hd = shost_priv(host);
3372 	MPT_ADAPTER *ioc = hd->ioc;
3373 
3374 	return snprintf(buf, PAGE_SIZE, "%02xh\n",ioc->nvdata_version_default);
3375 }
3376 static DEVICE_ATTR(version_nvdata_default, S_IRUGO,
3377     mptscsih_version_nvdata_default_show, NULL);
3378 
3379 static ssize_t
3380 mptscsih_board_name_show(struct device *dev, struct device_attribute *attr,
3381 			 char *buf)
3382 {
3383 	struct Scsi_Host *host = class_to_shost(dev);
3384 	MPT_SCSI_HOST	*hd = shost_priv(host);
3385 	MPT_ADAPTER *ioc = hd->ioc;
3386 
3387 	return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_name);
3388 }
3389 static DEVICE_ATTR(board_name, S_IRUGO, mptscsih_board_name_show, NULL);
3390 
3391 static ssize_t
3392 mptscsih_board_assembly_show(struct device *dev,
3393 			     struct device_attribute *attr, char *buf)
3394 {
3395 	struct Scsi_Host *host = class_to_shost(dev);
3396 	MPT_SCSI_HOST	*hd = shost_priv(host);
3397 	MPT_ADAPTER *ioc = hd->ioc;
3398 
3399 	return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_assembly);
3400 }
3401 static DEVICE_ATTR(board_assembly, S_IRUGO,
3402     mptscsih_board_assembly_show, NULL);
3403 
3404 static ssize_t
3405 mptscsih_board_tracer_show(struct device *dev, struct device_attribute *attr,
3406 			   char *buf)
3407 {
3408 	struct Scsi_Host *host = class_to_shost(dev);
3409 	MPT_SCSI_HOST	*hd = shost_priv(host);
3410 	MPT_ADAPTER *ioc = hd->ioc;
3411 
3412 	return snprintf(buf, PAGE_SIZE, "%s\n", ioc->board_tracer);
3413 }
3414 static DEVICE_ATTR(board_tracer, S_IRUGO,
3415     mptscsih_board_tracer_show, NULL);
3416 
3417 static ssize_t
3418 mptscsih_io_delay_show(struct device *dev, struct device_attribute *attr,
3419 		       char *buf)
3420 {
3421 	struct Scsi_Host *host = class_to_shost(dev);
3422 	MPT_SCSI_HOST	*hd = shost_priv(host);
3423 	MPT_ADAPTER *ioc = hd->ioc;
3424 
3425 	return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->io_missing_delay);
3426 }
3427 static DEVICE_ATTR(io_delay, S_IRUGO,
3428     mptscsih_io_delay_show, NULL);
3429 
3430 static ssize_t
3431 mptscsih_device_delay_show(struct device *dev, struct device_attribute *attr,
3432 			   char *buf)
3433 {
3434 	struct Scsi_Host *host = class_to_shost(dev);
3435 	MPT_SCSI_HOST	*hd = shost_priv(host);
3436 	MPT_ADAPTER *ioc = hd->ioc;
3437 
3438 	return snprintf(buf, PAGE_SIZE, "%02d\n", ioc->device_missing_delay);
3439 }
3440 static DEVICE_ATTR(device_delay, S_IRUGO,
3441     mptscsih_device_delay_show, NULL);
3442 
3443 static ssize_t
3444 mptscsih_debug_level_show(struct device *dev, struct device_attribute *attr,
3445 			  char *buf)
3446 {
3447 	struct Scsi_Host *host = class_to_shost(dev);
3448 	MPT_SCSI_HOST	*hd = shost_priv(host);
3449 	MPT_ADAPTER *ioc = hd->ioc;
3450 
3451 	return snprintf(buf, PAGE_SIZE, "%08xh\n", ioc->debug_level);
3452 }
3453 static ssize_t
3454 mptscsih_debug_level_store(struct device *dev, struct device_attribute *attr,
3455 			   const char *buf, size_t count)
3456 {
3457 	struct Scsi_Host *host = class_to_shost(dev);
3458 	MPT_SCSI_HOST	*hd = shost_priv(host);
3459 	MPT_ADAPTER *ioc = hd->ioc;
3460 	int val = 0;
3461 
3462 	if (sscanf(buf, "%x", &val) != 1)
3463 		return -EINVAL;
3464 
3465 	ioc->debug_level = val;
3466 	printk(MYIOC_s_INFO_FMT "debug_level=%08xh\n",
3467 				ioc->name, ioc->debug_level);
3468 	return strlen(buf);
3469 }
3470 static DEVICE_ATTR(debug_level, S_IRUGO | S_IWUSR,
3471 	mptscsih_debug_level_show, mptscsih_debug_level_store);
3472 
3473 struct device_attribute *mptscsih_host_attrs[] = {
3474 	&dev_attr_version_fw,
3475 	&dev_attr_version_bios,
3476 	&dev_attr_version_mpi,
3477 	&dev_attr_version_product,
3478 	&dev_attr_version_nvdata_persistent,
3479 	&dev_attr_version_nvdata_default,
3480 	&dev_attr_board_name,
3481 	&dev_attr_board_assembly,
3482 	&dev_attr_board_tracer,
3483 	&dev_attr_io_delay,
3484 	&dev_attr_device_delay,
3485 	&dev_attr_debug_level,
3486 	NULL,
3487 };
3488 EXPORT_SYMBOL(mptscsih_host_attrs);
3489 
3490 EXPORT_SYMBOL(mptscsih_remove);
3491 EXPORT_SYMBOL(mptscsih_shutdown);
3492 #ifdef CONFIG_PM
3493 EXPORT_SYMBOL(mptscsih_suspend);
3494 EXPORT_SYMBOL(mptscsih_resume);
3495 #endif
3496 EXPORT_SYMBOL(mptscsih_proc_info);
3497 EXPORT_SYMBOL(mptscsih_info);
3498 EXPORT_SYMBOL(mptscsih_qcmd);
3499 EXPORT_SYMBOL(mptscsih_slave_destroy);
3500 EXPORT_SYMBOL(mptscsih_slave_configure);
3501 EXPORT_SYMBOL(mptscsih_abort);
3502 EXPORT_SYMBOL(mptscsih_dev_reset);
3503 EXPORT_SYMBOL(mptscsih_bus_reset);
3504 EXPORT_SYMBOL(mptscsih_host_reset);
3505 EXPORT_SYMBOL(mptscsih_bios_param);
3506 EXPORT_SYMBOL(mptscsih_io_done);
3507 EXPORT_SYMBOL(mptscsih_taskmgmt_complete);
3508 EXPORT_SYMBOL(mptscsih_scandv_complete);
3509 EXPORT_SYMBOL(mptscsih_event_process);
3510 EXPORT_SYMBOL(mptscsih_ioc_reset);
3511 EXPORT_SYMBOL(mptscsih_change_queue_depth);
3512 EXPORT_SYMBOL(mptscsih_timer_expired);
3513 EXPORT_SYMBOL(mptscsih_TMHandler);
3514 
3515 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
3516