mptscsih.c

linux 内核源代码

	 */
	if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
		    "task abort: hidden raid component (sc=%p)\n",
		    ioc->name, SCpnt));
		SCpnt->result = DID_RESET << 16;
		retval = FAILED;
		goto out;
	}

	/* Find this command
	 */
	if ((scpnt_idx = SCPNT_TO_LOOKUP_IDX(ioc, SCpnt)) < 0) {
		/* Cmd not found in ScsiLookup.
		 * Do OS callback.
		 */
		SCpnt->result = DID_RESET << 16;
		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "task abort: "
		   "Command not in the active list! (sc=%p)\n", ioc->name,
		   SCpnt));
		retval = 0;
		goto out;
	}

	if (hd->resetPending) {
		retval = FAILED;
		goto out;
	}

	if (hd->timeouts < -1)
		hd->timeouts++;

	/* Most important!  Set TaskMsgContext to SCpnt's MsgContext!
	 * (the IO to be ABORT'd)
	 *
	 * NOTE: Since we do not byteswap MsgContext, we do not
	 *	 swap it here either.  It is an opaque cookie to
	 *	 the controller, so it does not matter. -DaveM
	 */
	mf = MPT_INDEX_2_MFPTR(ioc, scpnt_idx);
	ctx2abort = mf->u.frame.hwhdr.msgctxu.MsgContext;

	hd->abortSCpnt = SCpnt;

	retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK,
	    vdevice->vtarget->channel, vdevice->vtarget->id, vdevice->lun,
	    ctx2abort, mptscsih_get_tm_timeout(ioc));

	if (SCPNT_TO_LOOKUP_IDX(ioc, SCpnt) == scpnt_idx &&
	    SCpnt->serial_number == sn)
		retval = FAILED;

 out:
	printk(MYIOC_s_INFO_FMT "task abort: %s (sc=%p)\n",
	    ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);

	if (retval == 0)
		return SUCCESS;
	else
		return FAILED;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptscsih_dev_reset - Perform a SCSI TARGET_RESET!  new_eh variant
 *	@SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
 *
 *	(linux scsi_host_template.eh_dev_reset_handler routine)
 *
 *	Returns SUCCESS or FAILED.
 **/
int
mptscsih_dev_reset(struct scsi_cmnd * SCpnt)
{
	MPT_SCSI_HOST	*hd;
	int		 retval;
	VirtDevice	 *vdevice;
	MPT_ADAPTER	*ioc;

	/* If we can't locate our host adapter structure, return FAILED status.
	 */
	if ((hd = shost_priv(SCpnt->device->host)) == NULL){
		printk(KERN_ERR MYNAM ": target reset: "
		   "Can't locate host! (sc=%p)\n", SCpnt);
		return FAILED;
	}

	ioc = hd->ioc;
	printk(MYIOC_s_INFO_FMT "attempting target reset! (sc=%p)\n",
	       ioc->name, SCpnt);
	scsi_print_command(SCpnt);

	if (hd->resetPending) {
		retval = FAILED;
		goto out;
	}

	vdevice = SCpnt->device->hostdata;
	if (!vdevice || !vdevice->vtarget) {
		retval = 0;
		goto out;
	}

	/* Target reset to hidden raid component is not supported
	 */
	if (vdevice->vtarget->tflags & MPT_TARGET_FLAGS_RAID_COMPONENT) {
		retval = FAILED;
		goto out;
	}

	retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET,
	    vdevice->vtarget->channel, vdevice->vtarget->id, 0, 0,
	    mptscsih_get_tm_timeout(ioc));

 out:
	printk (MYIOC_s_INFO_FMT "target reset: %s (sc=%p)\n",
	    ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);

	if (retval == 0)
		return SUCCESS;
	else
		return FAILED;
}


/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptscsih_bus_reset - Perform a SCSI BUS_RESET!	new_eh variant
 *	@SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
 *
 *	(linux scsi_host_template.eh_bus_reset_handler routine)
 *
 *	Returns SUCCESS or FAILED.
 **/
int
mptscsih_bus_reset(struct scsi_cmnd * SCpnt)
{
	MPT_SCSI_HOST	*hd;
	int		 retval;
	VirtDevice	 *vdevice;
	MPT_ADAPTER	*ioc;

	/* If we can't locate our host adapter structure, return FAILED status.
	 */
	if ((hd = shost_priv(SCpnt->device->host)) == NULL){
		printk(KERN_ERR MYNAM ": bus reset: "
		   "Can't locate host! (sc=%p)\n", SCpnt);
		return FAILED;
	}

	ioc = hd->ioc;
	printk(MYIOC_s_INFO_FMT "attempting bus reset! (sc=%p)\n",
	       ioc->name, SCpnt);
	scsi_print_command(SCpnt);

	if (hd->timeouts < -1)
		hd->timeouts++;

	vdevice = SCpnt->device->hostdata;
	retval = mptscsih_TMHandler(hd, MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS,
	    vdevice->vtarget->channel, 0, 0, 0, mptscsih_get_tm_timeout(ioc));

	printk(MYIOC_s_INFO_FMT "bus reset: %s (sc=%p)\n",
	    ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);

	if (retval == 0)
		return SUCCESS;
	else
		return FAILED;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptscsih_host_reset - Perform a SCSI host adapter RESET (new_eh variant)
 *	@SCpnt: Pointer to scsi_cmnd structure, IO which reset is due to
 *
 *	(linux scsi_host_template.eh_host_reset_handler routine)
 *
 *	Returns SUCCESS or FAILED.
 */
int
mptscsih_host_reset(struct scsi_cmnd *SCpnt)
{
	MPT_SCSI_HOST *  hd;
	int              retval;
	MPT_ADAPTER	*ioc;

	/*  If we can't locate the host to reset, then we failed. */
	if ((hd = shost_priv(SCpnt->device->host)) == NULL){
		printk(KERN_ERR MYNAM ": host reset: "
		    "Can't locate host! (sc=%p)\n", SCpnt);
		return FAILED;
	}

	ioc = hd->ioc;
	printk(MYIOC_s_INFO_FMT "attempting host reset! (sc=%p)\n",
	    ioc->name, SCpnt);

	/*  If our attempts to reset the host failed, then return a failed
	 *  status.  The host will be taken off line by the SCSI mid-layer.
	 */
	if (mpt_HardResetHandler(ioc, CAN_SLEEP) < 0) {
		retval = FAILED;
	} else {
		/*  Make sure TM pending is cleared and TM state is set to
		 *  NONE.
		 */
		retval = 0;
		hd->tmPending = 0;
		hd->tmState = TM_STATE_NONE;
	}

	printk(MYIOC_s_INFO_FMT "host reset: %s (sc=%p)\n",
	    ioc->name, ((retval == 0) ? "SUCCESS" : "FAILED" ), SCpnt);

	return retval;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptscsih_tm_pending_wait - wait for pending task management request to complete
 *	@hd: Pointer to MPT host structure.
 *
 *	Returns {SUCCESS,FAILED}.
 */
static int
mptscsih_tm_pending_wait(MPT_SCSI_HOST * hd)
{
	unsigned long  flags;
	int            loop_count = 4 * 10;  /* Wait 10 seconds */
	int            status = FAILED;
	MPT_ADAPTER	*ioc = hd->ioc;

	do {
		spin_lock_irqsave(&ioc->FreeQlock, flags);
		if (hd->tmState == TM_STATE_NONE) {
			hd->tmState = TM_STATE_IN_PROGRESS;
			hd->tmPending = 1;
			spin_unlock_irqrestore(&ioc->FreeQlock, flags);
			status = SUCCESS;
			break;
		}
		spin_unlock_irqrestore(&ioc->FreeQlock, flags);
		msleep(250);
	} while (--loop_count);

	return status;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptscsih_tm_wait_for_completion - wait for completion of TM task
 *	@hd: Pointer to MPT host structure.
 *	@timeout: timeout value
 *
 *	Returns {SUCCESS,FAILED}.
 */
static int
mptscsih_tm_wait_for_completion(MPT_SCSI_HOST * hd, ulong timeout )
{
	unsigned long  flags;
	int            loop_count = 4 * timeout;
	int            status = FAILED;
	MPT_ADAPTER	*ioc = hd->ioc;

	do {
		spin_lock_irqsave(&ioc->FreeQlock, flags);
		if(hd->tmPending == 0) {
			status = SUCCESS;
			spin_unlock_irqrestore(&ioc->FreeQlock, flags);
			break;
		}
		spin_unlock_irqrestore(&ioc->FreeQlock, flags);
		msleep(250);
	} while (--loop_count);

	return status;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
static void
mptscsih_taskmgmt_response_code(MPT_ADAPTER *ioc, u8 response_code)
{
	char *desc;

	switch (response_code) {
	case MPI_SCSITASKMGMT_RSP_TM_COMPLETE:
		desc = "The task completed.";
		break;
	case MPI_SCSITASKMGMT_RSP_INVALID_FRAME:
		desc = "The IOC received an invalid frame status.";
		break;
	case MPI_SCSITASKMGMT_RSP_TM_NOT_SUPPORTED:
		desc = "The task type is not supported.";
		break;
	case MPI_SCSITASKMGMT_RSP_TM_FAILED:
		desc = "The requested task failed.";
		break;
	case MPI_SCSITASKMGMT_RSP_TM_SUCCEEDED:
		desc = "The task completed successfully.";
		break;
	case MPI_SCSITASKMGMT_RSP_TM_INVALID_LUN:
		desc = "The LUN request is invalid.";
		break;
	case MPI_SCSITASKMGMT_RSP_IO_QUEUED_ON_IOC:
		desc = "The task is in the IOC queue and has not been sent to target.";
		break;
	default:
		desc = "unknown";
		break;
	}
	printk(MYIOC_s_INFO_FMT "Response Code(0x%08x): F/W: %s\n",
		ioc->name, response_code, desc);
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/**
 *	mptscsih_taskmgmt_complete - Registered with Fusion MPT base driver
 *	@ioc: Pointer to MPT_ADAPTER structure
 *	@mf: Pointer to SCSI task mgmt request frame
 *	@mr: Pointer to SCSI task mgmt reply frame
 *
 *	This routine is called from mptbase.c::mpt_interrupt() at the completion
 *	of any SCSI task management request.
 *	This routine is registered with the MPT (base) driver at driver
 *	load/init time via the mpt_register() API call.
 *
 *	Returns 1 indicating alloc'd request frame ptr should be freed.
 **/
int
mptscsih_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
{
	SCSITaskMgmtReply_t	*pScsiTmReply;
	SCSITaskMgmt_t		*pScsiTmReq;
	MPT_SCSI_HOST		*hd;
	unsigned long		 flags;
	u16			 iocstatus;
	u8			 tmType;
	u32			 termination_count;

	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TaskMgmt completed (mf=%p,mr=%p)\n",
	    ioc->name, mf, mr));
	if (!ioc->sh) {
		dtmprintk(ioc, printk(MYIOC_s_WARN_FMT
		    "TaskMgmt Complete: NULL Scsi Host Ptr\n", ioc->name));
		return 1;
	}

	if (mr == NULL) {
		dtmprintk(ioc, printk(MYIOC_s_WARN_FMT
		    "ERROR! TaskMgmt Reply: NULL Request %p\n", ioc->name, mf));
		return 1;
	}

	hd = shost_priv(ioc->sh);
	pScsiTmReply = (SCSITaskMgmtReply_t*)mr;
	pScsiTmReq = (SCSITaskMgmt_t*)mf;
	tmType = pScsiTmReq->TaskType;
	iocstatus = le16_to_cpu(pScsiTmReply->IOCStatus) & MPI_IOCSTATUS_MASK;
	termination_count = le32_to_cpu(pScsiTmReply->TerminationCount);

	if (ioc->facts.MsgVersion >= MPI_VERSION_01_05 &&
	    pScsiTmReply->ResponseCode)
		mptscsih_taskmgmt_response_code(ioc,
		    pScsiTmReply->ResponseCode);
	DBG_DUMP_TM_REPLY_FRAME(ioc, (u32 *)pScsiTmReply);

#ifdef CONFIG_FUSION_LOGGING
	if ((ioc->debug_level & MPT_DEBUG_REPLY) ||
				(ioc->debug_level & MPT_DEBUG_TM ))
		printk("%s: ha=%d [%d:%d:0] task_type=0x%02X "
			"iocstatus=0x%04X\n\tloginfo=0x%08X response_code=0x%02X "
			"term_cmnds=%d\n", __FUNCTION__, ioc->id, pScsiTmReply->Bus,
			 pScsiTmReply->TargetID, pScsiTmReq->TaskType,
			le16_to_cpu(pScsiTmReply->IOCStatus),
			le32_to_cpu(pScsiTmReply->IOCLogInfo),pScsiTmReply->ResponseCode,
			le32_to_cpu(pScsiTmReply->TerminationCount));
#endif
	if (!iocstatus) {
		dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT " TaskMgmt SUCCESS\n", ioc->name));
			hd->abortSCpnt = NULL;
		goto out;
	}

	/* Error?  (anything non-zero?) */

	/* clear flags and continue.
	 */
	switch (tmType) {

	case MPI_SCSITASKMGMT_TASKTYPE_ABORT_TASK:
		if (termination_count == 1)
			iocstatus = MPI_IOCSTATUS_SCSI_TASK_TERMINATED;
		hd->abortSCpnt = NULL;
		break;

	case MPI_SCSITASKMGMT_TASKTYPE_RESET_BUS:

		/* If an internal command is present
		 * or the TM failed - reload the FW.
		 * FC FW may respond FAILED to an ABORT
		 */
		if (iocstatus == MPI_IOCSTATUS_SCSI_TASK_MGMT_FAILED ||
		    hd->cmdPtr)
			if (mpt_HardResetHandler(ioc, NO_SLEEP) < 0)
				printk(MYIOC_s_WARN_FMT " Firmware Reload FAILED!!\n", ioc->name);
		break;

	case MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET:
	default:
		break;
	}

 out:
	spin_lock_irqsave(&ioc->FreeQlock, flags);
	hd->tmPending = 0;
	hd->tmState = TM_STATE_NONE;
	hd->tm_iocstatus = iocstatus;
	spin_unlock_irqrestore(&ioc->FreeQlock, flags);

	return 1;
}

/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
/*
 *	This is anyones guess quite frankly.
 */
int
mptscsih_bios_param(struct scsi_device * sdev, struct block_device *bdev,
		sector_t capacity, int geom[])
{
	int		heads;
	int		sectors;
	sector_t	cylinders;
	ulong 		dummy;

	heads = 64;
	sectors = 32;

	dummy = heads * sectors;
	cylinders = capacity;
	sector_div(cylinders,dummy);

	/*
	 * Handle extended translation size for logical drives
	 * > 1Gb
	 */
	if ((ulong)capacity >=