[SCSI] mpt fusion: rewrite of ioctl_cmds internal generated function

1) rewrite of ioctl_cmds internal generated function that issue commands to
firmware, porting them to be single threaded using the generic MPT_MGMT
struct. All wait Queues are replace by completion Queue.
2) added seperate callback handler for ioctl task managment
(mptctl_taskmgmt_reply), to handle command that timeout
3) rewrite mptctl_bus_reset
Signed-off-by: Kashyap Desai <kadesai@lsi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>

drivers/message/fusion/mptbase.h

@@ -434,18 +434,6 @@ do { \
 
 #define MPTCTL_RESET_OK			0x01	/* Issue Bus Reset */
 
-typedef struct _MPT_IOCTL {
-	struct _MPT_ADAPTER	*ioc;
-	u8			 ReplyFrame[MPT_DEFAULT_FRAME_SIZE];	/* reply frame data */
-	u8			 sense[MPT_SENSE_BUFFER_ALLOC];
-	int			 wait_done;	/* wake-up value for this ioc */
-	u8			 rsvd;
-	u8			 status;	/* current command status */
-	u8			 reset;		/* 1 if bus reset allowed */
-	u8			 id;		/* target for reset */
-	struct mutex		 ioctl_mutex;
-} MPT_IOCTL;
-
 #define MPT_MGMT_STATUS_RF_VALID	0x01	/* The Reply Frame is VALID */
 #define MPT_MGMT_STATUS_COMMAND_GOOD	0x02	/* Command Status GOOD */
 #define MPT_MGMT_STATUS_PENDING		0x04	/* command is pending */
@@ -460,6 +448,10 @@ typedef struct _MPT_IOCTL {
 	status = MPT_MGMT_STATUS_PENDING;
 #define CLEAR_MGMT_STATUS(status) \
 	status = 0;
+#define CLEAR_MGMT_PENDING_STATUS(status) \
+	status &= ~MPT_MGMT_STATUS_PENDING;
+#define SET_MGMT_MSG_CONTEXT(msg_context, value) \
+	msg_context = value;
 
 typedef struct _MPT_MGMT {
 	struct mutex		 mutex;
@@ -468,6 +460,7 @@ typedef struct _MPT_MGMT {
 	u8			 sense[MPT_SENSE_BUFFER_ALLOC];
 	u8			 status;	/* current command status */
 	int			 completion_code;
+	u32			 msg_context;
 } MPT_MGMT;
 
 /*
@@ -654,7 +647,6 @@ typedef struct _MPT_ADAPTER
 	RaidCfgData		raid_data;	/* Raid config. data */
 	SasCfgData		sas_data;	/* Sas config. data */
 	FcCfgData		fc_data;	/* Fc 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 */
 	u32			 biosVersion;	/* BIOS version from IO Unit Page 2 */
@@ -711,6 +703,7 @@ typedef struct _MPT_ADAPTER
 	MPT_MGMT		 mptbase_cmds; /* for sending config pages */
 	MPT_MGMT		 internal_cmds;
 	MPT_MGMT		 taskmgmt_cmds;
+	MPT_MGMT		 ioctl_cmds;
 	spinlock_t		 taskmgmt_lock; /* diagnostic reset lock */
 	int			 taskmgmt_in_progress;
 	u8			 taskmgmt_quiesce_io;
@@ -855,10 +848,8 @@ typedef struct _MPT_SCSI_HOST {
 		/* Pool of memory for holding SCpnts before doing
 		 * OS callbacks. freeQ is the free pool.
 		 */
-	u8			  tmPending;
 	u8			  negoNvram;		/* DV disabled, nego NVRAM */
 	u8			  pad1;
-	u8                        tmState;
 	u8			  rsvd[2];
 	MPT_FRAME_HDR		 *cmdPtr;		/* Ptr to nonOS request */
 	struct scsi_cmnd	 *abortSCpnt;

drivers/message/fusion/mptfc.c

@@ -1290,8 +1290,6 @@ mptfc_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	/* Clear the TM flags
 	 */
-	hd->tmPending = 0;
-	hd->tmState = TM_STATE_NONE;
 	hd->abortSCpnt = NULL;
 
 	/* Clear the pointer used to store

drivers/message/fusion/mptsas.c

@@ -553,15 +553,21 @@ mptsas_target_reset(MPT_ADAPTER *ioc, u8 channel, u8 id)
 {
 	MPT_FRAME_HDR	*mf;
 	SCSITaskMgmt_t	*pScsiTm;
+	if (mpt_set_taskmgmt_in_progress_flag(ioc) != 0)
+		return 0;
+
 
 	mf = mpt_get_msg_frame(mptsasDeviceResetCtx, ioc);
 	if (mf == NULL) {
 		dfailprintk(ioc, printk(MYIOC_s_WARN_FMT
-			"%s, no msg frames @%d!!\n",
-			ioc->name, __func__, __LINE__));
-		return 0;
+			"%s, no msg frames @%d!!\n", ioc->name,
+			__func__, __LINE__));
+		goto out_fail;
 	}
 
+	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TaskMgmt request (mf=%p)\n",
+		ioc->name, mf));
+
 	/* Format the Request
 	 */
 	pScsiTm = (SCSITaskMgmt_t *) mf;
@@ -574,9 +580,18 @@ mptsas_target_reset(MPT_ADAPTER *ioc, u8 channel, u8 id)
 
 	DBG_DUMP_TM_REQUEST_FRAME(ioc, (u32 *)mf);
 
+	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
+	   "TaskMgmt type=%d (sas device delete) fw_channel = %d fw_id = %d)\n",
+	   ioc->name, MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET, channel, id));
+
 	mpt_put_msg_frame_hi_pri(mptsasDeviceResetCtx, ioc, mf);
 
 	return 1;
+
+ out_fail:
+
+	mpt_clear_taskmgmt_in_progress_flag(ioc);
+	return 0;
 }
 
 /**
@@ -719,9 +734,12 @@ mptsas_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
 	if (!ev) {
 		dfailprintk(ioc, printk(MYIOC_s_WARN_FMT "%s, failed to allocate mem @%d..!!\n",
 		    ioc->name,__func__, __LINE__));
-		return 0;
+		goto out_fail;
 	}
 
+	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT "TaskMgmt request (mf=%p)\n",
+		ioc->name, mf));
+
 	INIT_WORK(&ev->work, mptsas_hotplug_work);
 	ev->ioc = ioc;
 	ev->handle = le16_to_cpu(sas_event_data->DevHandle);
@@ -734,10 +752,19 @@ mptsas_taskmgmt_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, MPT_FRAME_HDR *mr)
 	    sizeof(__le64));
 	ev->sas_address = le64_to_cpu(sas_address);
 	ev->device_info = le32_to_cpu(sas_event_data->DeviceInfo);
+	dtmprintk(ioc, printk(MYIOC_s_DEBUG_FMT
+	   "TaskMgmt type=%d (sas device delete) fw_channel = %d fw_id = %d)\n",
+	   ioc->name, MPI_SCSITASKMGMT_TASKTYPE_TARGET_RESET, channel, id));
+
 	ev->event_type = MPTSAS_DEL_DEVICE;
 	schedule_work(&ev->work);
 	kfree(target_reset_list);
 
+ out_fail:
+
+	mpt_clear_taskmgmt_in_progress_flag(ioc);
+	return 0;
+
 
 	/*
 	 * issue target reset to next device in the queue
@@ -3291,8 +3318,6 @@ mptsas_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	/* Clear the TM flags
 	 */
-	hd->tmPending = 0;
-	hd->tmState = TM_STATE_NONE;
 	hd->abortSCpnt = NULL;
 
 	/* Clear the pointer used to store

drivers/message/fusion/mptscsih.c

@@ -1895,8 +1895,6 @@ mptscsih_host_reset(struct scsi_cmnd *SCpnt)
 		 *  NONE.
 		 */
 		retval = 0;
-		hd->tmPending = 0;
-		hd->tmState = TM_STATE_NONE;
 	}
 
 	printk(MYIOC_s_INFO_FMT "host reset: %s (sc=%p)\n",

drivers/message/fusion/mptspi.c

@@ -1474,8 +1474,6 @@ mptspi_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 
 	/* Clear the TM flags
 	 */
-	hd->tmPending = 0;
-	hd->tmState = TM_STATE_NONE;
 	hd->abortSCpnt = NULL;
 
 	/* Clear the pointer used to store