skge.c

linux-2.6.15.6

	while (((IntSrc & IRQ_MASK) & ~SPECIAL_IRQS) != 0) {
#if 0 /* software irq currently not used */
		if (IntSrc & IS_IRQ_SW) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("Software IRQ\n"));
		}
#endif
		if (IntSrc & IS_R1_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF RX1 IRQ\n"));
			ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
			SK_PNMI_CNT_RX_INTR(pAC, 0);
		}
		if (IntSrc & IS_R2_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF RX2 IRQ\n"));
			ReceiveIrq(pAC, &pAC->RxPort[1], SK_TRUE);
			SK_PNMI_CNT_RX_INTR(pAC, 1);
		}
#ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
		if (IntSrc & IS_XA1_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF AS TX1 IRQ\n"));
			SK_PNMI_CNT_TX_INTR(pAC, 0);
			spin_lock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
			FreeTxDescriptors(pAC, &pAC->TxPort[0][TX_PRIO_LOW]);
			spin_unlock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
		}
		if (IntSrc & IS_XA2_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF AS TX2 IRQ\n"));
			SK_PNMI_CNT_TX_INTR(pAC, 1);
			spin_lock(&pAC->TxPort[1][TX_PRIO_LOW].TxDesRingLock);
			FreeTxDescriptors(pAC, &pAC->TxPort[1][TX_PRIO_LOW]);
			spin_unlock(&pAC->TxPort[1][TX_PRIO_LOW].TxDesRingLock);
		}
#if 0 /* only if sync. queues used */
		if (IntSrc & IS_XS1_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF SY TX1 IRQ\n"));
			SK_PNMI_CNT_TX_INTR(pAC, 1);
			spin_lock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
			FreeTxDescriptors(pAC, 0, TX_PRIO_HIGH);
			spin_unlock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
			ClearTxIrq(pAC, 0, TX_PRIO_HIGH);
		}
		if (IntSrc & IS_XS2_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF SY TX2 IRQ\n"));
			SK_PNMI_CNT_TX_INTR(pAC, 1);
			spin_lock(&pAC->TxPort[1][TX_PRIO_HIGH].TxDesRingLock);
			FreeTxDescriptors(pAC, 1, TX_PRIO_HIGH);
			spin_unlock(&pAC->TxPort[1][TX_PRIO_HIGH].TxDesRingLock);
			ClearTxIrq(pAC, 1, TX_PRIO_HIGH);
		}
#endif
#endif

		/* do all IO at once */
		if (IntSrc & IS_R1_F)
			ClearAndStartRx(pAC, 0);
		if (IntSrc & IS_R2_F)
			ClearAndStartRx(pAC, 1);
#ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
		if (IntSrc & IS_XA1_F)
			ClearTxIrq(pAC, 0, TX_PRIO_LOW);
		if (IntSrc & IS_XA2_F)
			ClearTxIrq(pAC, 1, TX_PRIO_LOW);
#endif
		SK_IN32(pAC->IoBase, B0_ISRC, &IntSrc);
	} /* while (IntSrc & IRQ_MASK != 0) */

	IntSrc &= pAC->GIni.GIValIrqMask;
	if ((IntSrc & SPECIAL_IRQS) || pAC->CheckQueue) {
		SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_INT_SRC,
			("SPECIAL IRQ DP-Cards => %x\n", IntSrc));
		pAC->CheckQueue = SK_FALSE;
		spin_lock(&pAC->SlowPathLock);
		if (IntSrc & SPECIAL_IRQS)
			SkGeSirqIsr(pAC, pAC->IoBase, IntSrc);

		SkEventDispatcher(pAC, pAC->IoBase);
		spin_unlock(&pAC->SlowPathLock);
	}
	/*
	 * do it all again is case we cleared an interrupt that
	 * came in after handling the ring (OUTs may be delayed
	 * in hardware buffers, but are through after IN)
	 *
	 * rroesler: has been commented out and shifted to
	 *           SkGeDrvEvent(), because it is timer
	 *           guarded now
	 *
	ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
	ReceiveIrq(pAC, &pAC->RxPort[1], SK_TRUE);
	 */

	if (pAC->CheckQueue) {
		pAC->CheckQueue = SK_FALSE;
		spin_lock(&pAC->SlowPathLock);
		SkEventDispatcher(pAC, pAC->IoBase);
		spin_unlock(&pAC->SlowPathLock);
	}

	/* IRQ is processed - Enable IRQs again*/
	SK_OUT32(pAC->IoBase, B0_IMSK, pAC->GIni.GIValIrqMask);

		return SkIsrRetHandled;
} /* SkGeIsr */


/****************************************************************************
 *
 *	SkGeIsrOnePort - handle adapter interrupts for single port adapter
 *
 * Description:
 *	The interrupt routine is called when the network adapter
 *	generates an interrupt. It may also be called if another device
 *	shares this interrupt vector with the driver.
 *	This is the same as above, but handles only one port.
 *
 * Returns: N/A
 *
 */
static SkIsrRetVar SkGeIsrOnePort(int irq, void *dev_id, struct pt_regs *ptregs)
{
struct SK_NET_DEVICE *dev = (struct SK_NET_DEVICE *)dev_id;
DEV_NET		*pNet;
SK_AC		*pAC;
SK_U32		IntSrc;		/* interrupts source register contents */	

	pNet = netdev_priv(dev);
	pAC = pNet->pAC;
	
	/*
	 * Check and process if its our interrupt
	 */
	SK_IN32(pAC->IoBase, B0_SP_ISRC, &IntSrc);
	if (IntSrc == 0) {
		return SkIsrRetNone;
	}
	
	while (((IntSrc & IRQ_MASK) & ~SPECIAL_IRQS) != 0) {
#if 0 /* software irq currently not used */
		if (IntSrc & IS_IRQ_SW) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("Software IRQ\n"));
		}
#endif
		if (IntSrc & IS_R1_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF RX1 IRQ\n"));
			ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
			SK_PNMI_CNT_RX_INTR(pAC, 0);
		}
#ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
		if (IntSrc & IS_XA1_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF AS TX1 IRQ\n"));
			SK_PNMI_CNT_TX_INTR(pAC, 0);
			spin_lock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
			FreeTxDescriptors(pAC, &pAC->TxPort[0][TX_PRIO_LOW]);
			spin_unlock(&pAC->TxPort[0][TX_PRIO_LOW].TxDesRingLock);
		}
#if 0 /* only if sync. queues used */
		if (IntSrc & IS_XS1_F) {
			SK_DBG_MSG(NULL, SK_DBGMOD_DRV,
				SK_DBGCAT_DRV_INT_SRC,
				("EOF SY TX1 IRQ\n"));
			SK_PNMI_CNT_TX_INTR(pAC, 0);
			spin_lock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
			FreeTxDescriptors(pAC, 0, TX_PRIO_HIGH);
			spin_unlock(&pAC->TxPort[0][TX_PRIO_HIGH].TxDesRingLock);
			ClearTxIrq(pAC, 0, TX_PRIO_HIGH);
		}
#endif
#endif

		/* do all IO at once */
		if (IntSrc & IS_R1_F)
			ClearAndStartRx(pAC, 0);
#ifdef USE_TX_COMPLETE /* only if tx complete interrupt used */
		if (IntSrc & IS_XA1_F)
			ClearTxIrq(pAC, 0, TX_PRIO_LOW);
#endif
		SK_IN32(pAC->IoBase, B0_ISRC, &IntSrc);
	} /* while (IntSrc & IRQ_MASK != 0) */
	
	IntSrc &= pAC->GIni.GIValIrqMask;
	if ((IntSrc & SPECIAL_IRQS) || pAC->CheckQueue) {
		SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_INT_SRC,
			("SPECIAL IRQ SP-Cards => %x\n", IntSrc));
		pAC->CheckQueue = SK_FALSE;
		spin_lock(&pAC->SlowPathLock);
		if (IntSrc & SPECIAL_IRQS)
			SkGeSirqIsr(pAC, pAC->IoBase, IntSrc);

		SkEventDispatcher(pAC, pAC->IoBase);
		spin_unlock(&pAC->SlowPathLock);
	}
	/*
	 * do it all again is case we cleared an interrupt that
	 * came in after handling the ring (OUTs may be delayed
	 * in hardware buffers, but are through after IN)
	 *
	 * rroesler: has been commented out and shifted to
	 *           SkGeDrvEvent(), because it is timer
	 *           guarded now
	 *
	ReceiveIrq(pAC, &pAC->RxPort[0], SK_TRUE);
	 */

	/* IRQ is processed - Enable IRQs again*/
	SK_OUT32(pAC->IoBase, B0_IMSK, pAC->GIni.GIValIrqMask);

		return SkIsrRetHandled;
} /* SkGeIsrOnePort */

#ifdef CONFIG_NET_POLL_CONTROLLER
/****************************************************************************
 *
 * 	SkGePollController - polling receive, for netconsole
 *
 * Description:
 *	Polling receive - used by netconsole and other diagnostic tools
 *	to allow network i/o with interrupts disabled.
 *
 * Returns: N/A
 */
static void SkGePollController(struct net_device *dev)
{
	disable_irq(dev->irq);
	SkGeIsr(dev->irq, dev, NULL);
	enable_irq(dev->irq);
}
#endif

/****************************************************************************
 *
 *	SkGeOpen - handle start of initialized adapter
 *
 * Description:
 *	This function starts the initialized adapter.
 *	The board level variable is set and the adapter is
 *	brought to full functionality.
 *	The device flags are set for operation.
 *	Do all necessary level 2 initialization, enable interrupts and
 *	give start command to RLMT.
 *
 * Returns:
 *	0 on success
 *	!= 0 on error
 */
static int SkGeOpen(
struct SK_NET_DEVICE	*dev)
{
	DEV_NET			*pNet;
	SK_AC			*pAC;
	unsigned long	Flags;		/* for spin lock */
	int				i;
	SK_EVPARA		EvPara;		/* an event parameter union */

	pNet = netdev_priv(dev);
	pAC = pNet->pAC;
	
	SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
		("SkGeOpen: pAC=0x%lX:\n", (unsigned long)pAC));

#ifdef SK_DIAG_SUPPORT
	if (pAC->DiagModeActive == DIAG_ACTIVE) {
		if (pAC->Pnmi.DiagAttached == SK_DIAG_RUNNING) {
			return (-1);   /* still in use by diag; deny actions */
		} 
	}
#endif

	/* Set blink mode */
	if ((pAC->PciDev->vendor == 0x1186) || (pAC->PciDev->vendor == 0x11ab ))
		pAC->GIni.GILedBlinkCtrl = OEM_CONFIG_VALUE;

	if (pAC->BoardLevel == SK_INIT_DATA) {
		/* level 1 init common modules here */
		if (SkGeInit(pAC, pAC->IoBase, SK_INIT_IO) != 0) {
			printk("%s: HWInit (1) failed.\n", pAC->dev[pNet->PortNr]->name);
			return (-1);
		}
		SkI2cInit	(pAC, pAC->IoBase, SK_INIT_IO);
		SkEventInit	(pAC, pAC->IoBase, SK_INIT_IO);
		SkPnmiInit	(pAC, pAC->IoBase, SK_INIT_IO);
		SkAddrInit	(pAC, pAC->IoBase, SK_INIT_IO);
		SkRlmtInit	(pAC, pAC->IoBase, SK_INIT_IO);
		SkTimerInit	(pAC, pAC->IoBase, SK_INIT_IO);
		pAC->BoardLevel = SK_INIT_IO;
	}

	if (pAC->BoardLevel != SK_INIT_RUN) {
		/* tschilling: Level 2 init modules here, check return value. */
		if (SkGeInit(pAC, pAC->IoBase, SK_INIT_RUN) != 0) {
			printk("%s: HWInit (2) failed.\n", pAC->dev[pNet->PortNr]->name);
			return (-1);
		}
		SkI2cInit	(pAC, pAC->IoBase, SK_INIT_RUN);
		SkEventInit	(pAC, pAC->IoBase, SK_INIT_RUN);
		SkPnmiInit	(pAC, pAC->IoBase, SK_INIT_RUN);
		SkAddrInit	(pAC, pAC->IoBase, SK_INIT_RUN);
		SkRlmtInit	(pAC, pAC->IoBase, SK_INIT_RUN);
		SkTimerInit	(pAC, pAC->IoBase, SK_INIT_RUN);
		pAC->BoardLevel = SK_INIT_RUN;
	}

	for (i=0; i<pAC->GIni.GIMacsFound; i++) {
		/* Enable transmit descriptor polling. */
		SkGePollTxD(pAC, pAC->IoBase, i, SK_TRUE);
		FillRxRing(pAC, &pAC->RxPort[i]);
	}
	SkGeYellowLED(pAC, pAC->IoBase, 1);

	StartDrvCleanupTimer(pAC);
	SkDimEnableModerationIfNeeded(pAC);	
	SkDimDisplayModerationSettings(pAC);

	pAC->GIni.GIValIrqMask &= IRQ_MASK;

	/* enable Interrupts */
	SK_OUT32(pAC->IoBase, B0_IMSK, pAC->GIni.GIValIrqMask);
	SK_OUT32(pAC->IoBase, B0_HWE_IMSK, IRQ_HWE_MASK);

	spin_lock_irqsave(&pAC->SlowPathLock, Flags);

	if ((pAC->RlmtMode != 0) && (pAC->MaxPorts == 0)) {
		EvPara.Para32[0] = pAC->RlmtNets;
		EvPara.Para32[1] = -1;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_SET_NETS,
			EvPara);
		EvPara.Para32[0] = pAC->RlmtMode;
		EvPara.Para32[1] = 0;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_MODE_CHANGE,
			EvPara);
	}

	EvPara.Para32[0] = pNet->NetNr;
	EvPara.Para32[1] = -1;
	SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_START, EvPara);
	SkEventDispatcher(pAC, pAC->IoBase);
	spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);

	pAC->MaxPorts++;
	pNet->Up = 1;


	SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
		("SkGeOpen suceeded\n"));

	return (0);
} /* SkGeOpen */


/****************************************************************************
 *
 *	SkGeClose - Stop initialized adapter
 *
 * Description:
 *	Close initialized adapter.
 *
 * Returns:
 *	0 - on success
 *	error code - on error
 */
static int SkGeClose(
struct SK_NET_DEVICE	*dev)
{
	DEV_NET		*pNet;
	DEV_NET		*newPtrNet;
	SK_AC		*pAC;

	unsigned long	Flags;		/* for spin lock */
	int		i;
	int		PortIdx;
	SK_EVPARA	EvPara;

	SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
		("SkGeClose: pAC=0x%lX ", (unsigned long)pAC));

	pNet = netdev_priv(dev);
	pAC = pNet->pAC;

#ifdef SK_DIAG_SUPPORT
	if (pAC->DiagModeActive == DIAG_ACTIVE) {
		if (pAC->DiagFlowCtrl == SK_FALSE) {
			/* 
			** notify that the interface which has been closed
			** by operator interaction must not be started up 
			** again when the DIAG has finished. 
			*/
			newPtrNet = netdev_priv(pAC->dev[0]);
			if (newPtrNet == pNet) {
				pAC->WasIfUp[0] = SK_FALSE;
			} else {
				pAC->WasIfUp[1] = SK_FALSE;
			}
			return 0; /* return to system everything is fine... */
		} else {
			pAC->DiagFlowCtrl = SK_FALSE;
		}
	}
#endif

	netif_stop_queue(dev);

	if (pAC->RlmtNets == 1)
		PortIdx = pAC->ActivePort;
	else
		PortIdx = pNet->NetNr;

        StopDrvCleanupTimer(pAC);

	/*
	 * Clear multicast table, promiscuous mode ....
	 */
	SkAddrMcClear(pAC, pAC->IoBase, PortIdx, 0);
	SkAddrPromiscuousChange(pAC, pAC->IoBase, PortIdx,
		SK_PROM_MODE_NONE);

	if (pAC->MaxPorts == 1) {
		spin_lock_irqsave(&pAC->SlowPathLock, Flags);
		/* disable interrupts */
		SK_OUT32(pAC->IoBase, B0_IMSK, 0);
		EvPara.Para32[0] = pNet->NetNr;
		EvPara.Para32[1] = -1;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
		SkEventDispatcher(pAC, pAC->IoBase);
		SK_OUT32(pAC->IoBase, B0_IMSK, 0);
		/* stop the hardware */
		SkGeDeInit(pAC, pAC->IoBase);
		pAC->BoardLevel = SK_INIT_DATA;
		spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
	} else {

		spin_lock_irqsave(&pAC->SlowPathLock, Flags);
		EvPara.Para32[0] = pNet->NetNr;
		EvPara.Para32[1] = -1;
		SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
		SkPnmiEvent(pAC, pAC->IoBase, SK_PNMI_EVT_XMAC_RESET, EvPara);
		SkEventDispatcher(pAC, pAC->IoBase);
		spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);