[SCSI] fusion core changes for SAS support

 - various bits for SAS support from the LSI driver.
 - use the device private data for the fusion target private data.
   this should be using the midlayer target data framework, but we
   can't move over to that until fusion has been switched to the
   generic DV code
 - use target ID and channel from the fusion target private data,
   because those in scsi_device will be different for mptsas
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

drivers/message/fusion/mptbase.h

@@ -65,6 +65,7 @@
 #include "lsi/mpi_fc.h"		/* Fibre Channel (lowlevel) support */
 #include "lsi/mpi_targ.h"	/* SCSI/FCP Target protcol support */
 #include "lsi/mpi_tool.h"	/* Tools support */
+#include "lsi/mpi_sas.h"	/* SAS support */
 
 /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
 
@@ -477,6 +478,14 @@ typedef	struct _ScsiCfgData {
 	u8		 rsvd[1];
 } ScsiCfgData;
 
+typedef	struct _SasCfgData {
+	u8		 ptClear;		/* 1 to automatically clear the
+						 * persistent table.
+						 * 0 to disable
+						 * automatic clearing.
+						 */
+}SasCfgData;
+
 /*
  *  Adapter Structure - pci_dev specific. Maximum: MPT_MAX_ADAPTERS
  */
@@ -530,11 +539,15 @@ typedef struct _MPT_ADAPTER
 	u8			*sense_buf_pool;
 	dma_addr_t		 sense_buf_pool_dma;
 	u32			 sense_buf_low_dma;
+	u8			*HostPageBuffer; /* SAS - host page buffer support */
+	u32			HostPageBuffer_sz;
+	dma_addr_t		HostPageBuffer_dma;
 	int			 mtrr_reg;
 	struct pci_dev		*pcidev;	/* struct pci_dev pointer */
 	u8			__iomem *memmap;	/* mmap address */
 	struct Scsi_Host	*sh;		/* Scsi Host pointer */
 	ScsiCfgData		spi_data;	/* Scsi config. data */
+	SasCfgData		sas_data;	/* Sas config. data */
 	MPT_IOCTL		*ioctl;		/* ioctl data pointer */
 	struct proc_dir_entry	*ioc_dentry;
 	struct _MPT_ADAPTER	*alt_ioc;	/* ptr to 929 bound adapter port */
@@ -560,6 +573,9 @@ typedef struct _MPT_ADAPTER
 	IOCFactsReply_t		 facts;
 	PortFactsReply_t	 pfacts[2];
 	FCPortPage0_t		 fc_port_page0[2];
+	struct timer_list	 persist_timer;	/* persist table timer */
+	int			 persist_wait_done; /* persist completion flag */
+	u8			 persist_reply_frame[MPT_DEFAULT_FRAME_SIZE]; /* persist reply */
 	LANPage0_t		 lan_cnfg_page0;
 	LANPage1_t		 lan_cnfg_page1;
 	/*
@@ -579,6 +595,7 @@ typedef struct _MPT_ADAPTER
 	int			 InternalCtx;
 	struct list_head	 list;
 	struct net_device	*netdev;
+	struct list_head	 sas_topology;
 } MPT_ADAPTER;
 
 /*
@@ -964,6 +981,7 @@ extern void	 mpt_alloc_fw_memory(MPT_ADAPTER *ioc, int size);
 extern void	 mpt_free_fw_memory(MPT_ADAPTER *ioc);
 extern int	 mpt_findImVolumes(MPT_ADAPTER *ioc);
 extern int	 mpt_read_ioc_pg_3(MPT_ADAPTER *ioc);
+extern int	 mptbase_sas_persist_operation(MPT_ADAPTER *ioc, u8 persist_opcode);
 
 /*
  *  Public data decl's...

drivers/message/fusion/mptscsih.c

@@ -1256,8 +1256,7 @@ mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 	MPT_SCSI_HOST		*hd;
 	MPT_FRAME_HDR		*mf;
 	SCSIIORequest_t		*pScsiReq;
-	VirtDevice		*pTarget;
-	int	 target;
+	VirtDevice		*pTarget = SCpnt->device->hostdata;
 	int	 lun;
 	u32	 datalen;
 	u32	 scsictl;
@@ -1267,12 +1266,9 @@ mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 	int	 ii;
 
 	hd = (MPT_SCSI_HOST *) SCpnt->device->host->hostdata;
-	target = SCpnt->device->id;
 	lun = SCpnt->device->lun;
 	SCpnt->scsi_done = done;
 
-	pTarget = hd->Targets[target];
-
 	dmfprintk((MYIOC_s_INFO_FMT "qcmd: SCpnt=%p, done()=%p\n",
 			(hd && hd->ioc) ? hd->ioc->name : "ioc?", SCpnt, done));
 
@@ -1315,7 +1311,7 @@ mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 	/* Default to untagged. Once a target structure has been allocated,
 	 * use the Inquiry data to determine if device supports tagged.
 	 */
-	if (   pTarget
+	if (pTarget
 	    && (pTarget->tflags & MPT_TARGET_FLAGS_Q_YES)
 	    && (SCpnt->device->tagged_supported)) {
 		scsictl = scsidir | MPI_SCSIIO_CONTROL_SIMPLEQ;
@@ -1325,8 +1321,8 @@ mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 
 	/* Use the above information to set up the message frame
 	 */
-	pScsiReq->TargetID = (u8) target;
-	pScsiReq->Bus = (u8) SCpnt->device->channel;
+	pScsiReq->TargetID = (u8) pTarget->target_id;
+	pScsiReq->Bus = pTarget->bus_id;
 	pScsiReq->ChainOffset = 0;
 	pScsiReq->Function = MPI_FUNCTION_SCSI_IO_REQUEST;
 	pScsiReq->CDBLength = SCpnt->cmd_len;
@@ -1378,7 +1374,7 @@ mptscsih_qcmd(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *))
 
 #ifdef MPTSCSIH_ENABLE_DOMAIN_VALIDATION
 	if (hd->ioc->bus_type == SCSI) {
-		int dvStatus = hd->ioc->spi_data.dvStatus[target];
+		int dvStatus = hd->ioc->spi_data.dvStatus[pTarget->target_id];
 		int issueCmd = 1;
 
 		if (dvStatus || hd->ioc->spi_data.forceDv) {
@@ -2180,6 +2176,7 @@ mptscsih_slave_alloc(struct scsi_device *device)
 
  out:
 	vdev->num_luns++;
+	device->hostdata = vdev;
 	return 0;
 }