Commit fd76175a authored by Kashyap, Desai's avatar Kashyap, Desai Committed by James Bottomley
Browse files

[SCSI] mpt fusion: Optimized SendEvent notification Using Doorbell instead FIFO 



SendEventNotification was handled through FIFO, now it is using doorbell to
communicate with hardware. Added Sleep Flag as an extra argument to support
Can-Sleep feature.  Resending patch including compilation error fix reviewed
by Grant Grundler.

Signed-off-by: default avatarKashyap Desai <kadesai@lsi.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent 7b5a65b9

drivers/message/fusion/mptbase.c

+42 −34
Original line number Diff line number Diff line
@@ -192,7 +192,8 @@ static void mpt_read_ioc_pg_1(MPT_ADAPTER *ioc); 
static void 	mpt_read_ioc_pg_4(MPT_ADAPTER *ioc);

static void	mpt_timer_expired(unsigned long data);

static void	mpt_get_manufacturing_pg_0(MPT_ADAPTER *ioc);

static int	SendEventNotification(MPT_ADAPTER *ioc, u8 EvSwitch);

static int	SendEventNotification(MPT_ADAPTER *ioc, u8 EvSwitch,

	int sleepFlag);

static int	SendEventAck(MPT_ADAPTER *ioc, EventNotificationReply_t *evnp);

static int	mpt_host_page_access_control(MPT_ADAPTER *ioc, u8 access_control_value, int sleepFlag);

static int	mpt_host_page_alloc(MPT_ADAPTER *ioc, pIOCInit_t ioc_init);
@@ -208,7 +209,8 @@ static int procmpt_iocinfo_read(char *buf, char **start, off_t offset, 
static void	mpt_get_fw_exp_ver(char *buf, MPT_ADAPTER *ioc);



//int		mpt_HardResetHandler(MPT_ADAPTER *ioc, int sleepFlag);

static int	ProcessEventNotification(MPT_ADAPTER *ioc, EventNotificationReply_t *evReply, int *evHandlers);

static int	ProcessEventNotification(MPT_ADAPTER *ioc,

		EventNotificationReply_t *evReply, int *evHandlers);

static void	mpt_iocstatus_info(MPT_ADAPTER *ioc, u32 ioc_status, MPT_FRAME_HDR *mf);

static void	mpt_fc_log_info(MPT_ADAPTER *ioc, u32 log_info);

static void	mpt_spi_log_info(MPT_ADAPTER *ioc, u32 log_info);
@@ -2472,28 +2474,36 @@ mpt_do_ioc_recovery(MPT_ADAPTER *ioc, u32 reason, int sleepFlag) 
		}

	}



	/*  Enable MPT base driver management of EventNotification

	 *  and EventAck handling.

	 */

	if ((ret == 0) && (!ioc->facts.EventState)) {

		dinitprintk(ioc, printk(MYIOC_s_INFO_FMT

			"SendEventNotification\n",

		    ioc->name));

		ret = SendEventNotification(ioc, 1, sleepFlag);	/* 1=Enable */

	}



	if (ioc->alt_ioc && alt_ioc_ready && !ioc->alt_ioc->facts.EventState)

		rc = SendEventNotification(ioc->alt_ioc, 1, sleepFlag);



	if (ret == 0) {

		/* Enable! (reply interrupt) */

		CHIPREG_WRITE32(&ioc->chip->IntMask, MPI_HIM_DIM);

		ioc->active = 1;

	}



	if (rc == 0) {	/* alt ioc */

		if (reset_alt_ioc_active && ioc->alt_ioc) {

			/* (re)Enable alt-IOC! (reply interrupt) */

		dinitprintk(ioc, printk(MYIOC_s_INFO_FMT "alt_ioc reply irq re-enabled\n",

			dinitprintk(ioc, printk(MYIOC_s_DEBUG_FMT "alt-ioc"

				"reply irq re-enabled\n",

				ioc->alt_ioc->name));

		CHIPREG_WRITE32(&ioc->alt_ioc->chip->IntMask, MPI_HIM_DIM);

			CHIPREG_WRITE32(&ioc->alt_ioc->chip->IntMask,

				MPI_HIM_DIM);

			ioc->alt_ioc->active = 1;

		}

	}



	/*  Enable MPT base driver management of EventNotification

	 *  and EventAck handling.

	 */

	if ((ret == 0) && (!ioc->facts.EventState))

		(void) SendEventNotification(ioc, 1);	/* 1=Enable EventNotification */



	if (ioc->alt_ioc && alt_ioc_ready && !ioc->alt_ioc->facts.EventState)

		(void) SendEventNotification(ioc->alt_ioc, 1);	/* 1=Enable EventNotification */



	/*	Add additional "reason" check before call to GetLanConfigPages

	 *	(combined with GetIoUnitPage2 call).  This prevents a somewhat
@@ -6019,30 +6029,28 @@ mpt_get_manufacturing_pg_0(MPT_ADAPTER *ioc) 
 *	SendEventNotification - Send EventNotification (on or off) request to adapter

 *	@ioc: Pointer to MPT_ADAPTER structure

 *	@EvSwitch: Event switch flags

 *	@sleepFlag: Specifies whether the process can sleep

 */

static int

SendEventNotification(MPT_ADAPTER *ioc, u8 EvSwitch)

SendEventNotification(MPT_ADAPTER *ioc, u8 EvSwitch, int sleepFlag)

{

	EventNotification_t	*evnp;



	evnp = (EventNotification_t *) mpt_get_msg_frame(mpt_base_index, ioc);

	if (evnp == NULL) {

		devtverboseprintk(ioc, printk(MYIOC_s_WARN_FMT "Unable to allocate event request frame!\n",

				ioc->name));

		return 0;

	}

	memset(evnp, 0, sizeof(*evnp));

	EventNotification_t	evn;

	MPIDefaultReply_t	reply_buf;



	devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT "Sending EventNotification (%d) request %p\n", ioc->name, EvSwitch, evnp));

	memset(&evn, 0, sizeof(EventNotification_t));

	memset(&reply_buf, 0, sizeof(MPIDefaultReply_t));



	evnp->Function = MPI_FUNCTION_EVENT_NOTIFICATION;

	evnp->ChainOffset = 0;

	evnp->MsgFlags = 0;

	evnp->Switch = EvSwitch;

	evn.Function = MPI_FUNCTION_EVENT_NOTIFICATION;

	evn.Switch = EvSwitch;

	evn.MsgContext = cpu_to_le32(mpt_base_index << 16);



	mpt_put_msg_frame(mpt_base_index, ioc, (MPT_FRAME_HDR *)evnp);

	devtverboseprintk(ioc, printk(MYIOC_s_DEBUG_FMT

	    "Sending EventNotification (%d) request %p\n",

	    ioc->name, EvSwitch, &evn));



	return 0;

	return mpt_handshake_req_reply_wait(ioc, sizeof(EventNotification_t),

	    (u32 *)&evn, sizeof(MPIDefaultReply_t), (u16 *)&reply_buf, 30,

	    sleepFlag);

}



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