[SCSI] mptfusion: move fc event/reset handling to mptfc

Move fibre channel event and reset handling to mptfc.  This will
result in fewer changes over time that need to be applied to
either mptbase.c or mptscsih.c.

Signed-off-by: Michael Reed <mdr@sgi.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 184 insertions, 3 deletions

diff --git a/drivers/message/fusion/mptfc.c b/drivers/message/fusion/mptfc.c
index 856487741ef4..e518bc97f8ce 100644
--- a/drivers/message/fusion/mptfc.c
+++ b/drivers/message/fusion/mptfc.c
@@ -596,6 +596,110 @@ mptfc_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 	return err;
 }
 
+/*
+ *	mptfc_GetFcPortPage0 - Fetch FCPort config Page0.
+ *	@ioc: Pointer to MPT_ADAPTER structure
+ *	@portnum: IOC Port number
+ *
+ *	Return: 0 for success
+ *	-ENOMEM if no memory available
+ *		-EPERM if not allowed due to ISR context
+ *		-EAGAIN if no msg frames currently available
+ *		-EFAULT for non-successful reply or no reply (timeout)
+ *		-EINVAL portnum arg out of range (hardwired to two elements)
+ */
+static int
+mptfc_GetFcPortPage0(MPT_ADAPTER *ioc, int portnum)
+{
+	ConfigPageHeader_t	 hdr;
+	CONFIGPARMS		 cfg;
+	FCPortPage0_t		*ppage0_alloc;
+	FCPortPage0_t		*pp0dest;
+	dma_addr_t		 page0_dma;
+	int			 data_sz;
+	int			 copy_sz;
+	int			 rc;
+	int			 count = 400;
+
+	if (portnum > 1)
+		return -EINVAL;
+
+	/* Get FCPort Page 0 header */
+	hdr.PageVersion = 0;
+	hdr.PageLength = 0;
+	hdr.PageNumber = 0;
+	hdr.PageType = MPI_CONFIG_PAGETYPE_FC_PORT;
+	cfg.cfghdr.hdr = &hdr;
+	cfg.physAddr = -1;
+	cfg.action = MPI_CONFIG_ACTION_PAGE_HEADER;
+	cfg.dir = 0;
+	cfg.pageAddr = portnum;
+	cfg.timeout = 0;
+
+	if ((rc = mpt_config(ioc, &cfg)) != 0)
+		return rc;
+
+	if (hdr.PageLength == 0)
+		return 0;
+
+	data_sz = hdr.PageLength * 4;
+	rc = -ENOMEM;
+	ppage0_alloc = (FCPortPage0_t *) pci_alloc_consistent(ioc->pcidev, data_sz, &page0_dma);
+	if (ppage0_alloc) {
+
+ try_again:
+		memset((u8 *)ppage0_alloc, 0, data_sz);
+		cfg.physAddr = page0_dma;
+		cfg.action = MPI_CONFIG_ACTION_PAGE_READ_CURRENT;
+
+		if ((rc = mpt_config(ioc, &cfg)) == 0) {
+			/* save the data */
+			pp0dest = &ioc->fc_port_page0[portnum];
+			copy_sz = min_t(int, sizeof(FCPortPage0_t), data_sz);
+			memcpy(pp0dest, ppage0_alloc, copy_sz);
+
+			/*
+			 *	Normalize endianness of structure data,
+			 *	by byte-swapping all > 1 byte fields!
+			 */
+			pp0dest->Flags = le32_to_cpu(pp0dest->Flags);
+			pp0dest->PortIdentifier = le32_to_cpu(pp0dest->PortIdentifier);
+			pp0dest->WWNN.Low = le32_to_cpu(pp0dest->WWNN.Low);
+			pp0dest->WWNN.High = le32_to_cpu(pp0dest->WWNN.High);
+			pp0dest->WWPN.Low = le32_to_cpu(pp0dest->WWPN.Low);
+			pp0dest->WWPN.High = le32_to_cpu(pp0dest->WWPN.High);
+			pp0dest->SupportedServiceClass = le32_to_cpu(pp0dest->SupportedServiceClass);
+			pp0dest->SupportedSpeeds = le32_to_cpu(pp0dest->SupportedSpeeds);
+			pp0dest->CurrentSpeed = le32_to_cpu(pp0dest->CurrentSpeed);
+			pp0dest->MaxFrameSize = le32_to_cpu(pp0dest->MaxFrameSize);
+			pp0dest->FabricWWNN.Low = le32_to_cpu(pp0dest->FabricWWNN.Low);
+			pp0dest->FabricWWNN.High = le32_to_cpu(pp0dest->FabricWWNN.High);
+			pp0dest->FabricWWPN.Low = le32_to_cpu(pp0dest->FabricWWPN.Low);
+			pp0dest->FabricWWPN.High = le32_to_cpu(pp0dest->FabricWWPN.High);
+			pp0dest->DiscoveredPortsCount = le32_to_cpu(pp0dest->DiscoveredPortsCount);
+			pp0dest->MaxInitiators = le32_to_cpu(pp0dest->MaxInitiators);
+
+			/*
+			 * if still doing discovery,
+			 * hang loose a while until finished
+			 */
+			if (pp0dest->PortState == MPI_FCPORTPAGE0_PORTSTATE_UNKNOWN) {
+				if (count-- > 0) {
+					msleep_interruptible(100);
+					goto try_again;
+				}
+				printk(MYIOC_s_INFO_FMT "Firmware discovery not"
+							" complete.\n",
+						ioc->name);
+			}
+		}
+
+		pci_free_consistent(ioc->pcidev, data_sz, (u8 *) ppage0_alloc, page0_dma);
+	}
+
+	return rc;
+}
+
 static void
 mptfc_init_host_attr(MPT_ADAPTER *ioc,int portnum)
 {
@@ -651,7 +755,7 @@ mptfc_rescan_devices(void *arg)
 		 * will reregister existing rports
 		 */
 		for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
-			(void) mptbase_GetFcPortPage0(ioc, ii);
+			(void) mptfc_GetFcPortPage0(ioc, ii);
 			mptfc_init_host_attr(ioc,ii);	/* refresh */
 			mptfc_GetFcDevPage0(ioc,ii,mptfc_register_dev);
 		}
@@ -753,6 +857,7 @@ mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto out_mptfc_probe;
         }
 
+	spin_lock_init(&ioc->fc_rescan_work_lock);
 	INIT_WORK(&ioc->fc_rescan_work, mptfc_rescan_devices,(void *)ioc);
 
 	spin_lock_irqsave(&ioc->FreeQlock, flags);
@@ -889,6 +994,14 @@ mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		goto out_mptfc_probe;
 
 	/*
+	 *  Pre-fetch FC port WWN and stuff...
+	 *  (FCPortPage0_t stuff)
+	 */
+	for (ii=0; ii < ioc->facts.NumberOfPorts; ii++) {
+		(void) mptfc_GetFcPortPage0(ioc, ii);
+	}
+
+	/*
 	 * scan for rports -
 	 *	by doing it via the workqueue, some locking is eliminated
 	 */
@@ -917,6 +1030,74 @@ static struct pci_driver mptfc_driver = {
 #endif
 };
 
+static int
+mptfc_event_process(MPT_ADAPTER *ioc, EventNotificationReply_t *pEvReply)
+{
+	MPT_SCSI_HOST *hd;
+	u8 event = le32_to_cpu(pEvReply->Event) & 0xFF;
+	unsigned long flags;
+	int rc=1;
+
+	devtverboseprintk((MYIOC_s_INFO_FMT "MPT event (=%02Xh) routed to SCSI host driver!\n",
+			ioc->name, event));
+
+	if (ioc->sh == NULL ||
+		((hd = (MPT_SCSI_HOST *)ioc->sh->hostdata) == NULL))
+		return 1;
+
+	switch (event) {
+	case MPI_EVENT_RESCAN:
+		spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
+		if (ioc->fc_rescan_work_q) {
+			if (ioc->fc_rescan_work_count++ == 0) {
+				queue_work(ioc->fc_rescan_work_q,
+					   &ioc->fc_rescan_work);
+			}
+		}
+		spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
+		break;
+	default:
+		rc = mptscsih_event_process(ioc,pEvReply);
+		break;
+	}
+	return rc;
+}
+
+static int
+mptfc_ioc_reset(MPT_ADAPTER *ioc, int reset_phase)
+{
+	int		rc;
+	unsigned long	flags;
+
+	rc = mptscsih_ioc_reset(ioc,reset_phase);
+	if (rc == 0)
+		return rc;
+
+
+	dtmprintk((KERN_WARNING MYNAM
+		": IOC %s_reset routed to FC host driver!\n",
+		reset_phase==MPT_IOC_SETUP_RESET ? "setup" : (
+		reset_phase==MPT_IOC_PRE_RESET ? "pre" : "post")));
+
+	if (reset_phase == MPT_IOC_SETUP_RESET) {
+	}
+
+	else if (reset_phase == MPT_IOC_PRE_RESET) {
+	}
+
+	else {	/* MPT_IOC_POST_RESET */
+		spin_lock_irqsave(&ioc->fc_rescan_work_lock, flags);
+		if (ioc->fc_rescan_work_q) {
+			if (ioc->fc_rescan_work_count++ == 0) {
+				queue_work(ioc->fc_rescan_work_q,
+					   &ioc->fc_rescan_work);
+			}
+		}
+		spin_unlock_irqrestore(&ioc->fc_rescan_work_lock, flags);
+	}
+	return 1;
+}
+
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 /**
  *	mptfc_init - Register MPT adapter(s) as SCSI host(s) with
@@ -945,12 +1126,12 @@ mptfc_init(void)
 	mptfcTaskCtx = mpt_register(mptscsih_taskmgmt_complete, MPTFC_DRIVER);
 	mptfcInternalCtx = mpt_register(mptscsih_scandv_complete, MPTFC_DRIVER);
 
-	if (mpt_event_register(mptfcDoneCtx, mptscsih_event_process) == 0) {
+	if (mpt_event_register(mptfcDoneCtx, mptfc_event_process) == 0) {
 		devtverboseprintk((KERN_INFO MYNAM
 		  ": Registered for IOC event notifications\n"));
 	}
 
-	if (mpt_reset_register(mptfcDoneCtx, mptscsih_ioc_reset) == 0) {
+	if (mpt_reset_register(mptfcDoneCtx, mptfc_ioc_reset) == 0) {
 		dprintk((KERN_INFO MYNAM
 		  ": Registered for IOC reset notifications\n"));
 	}