skgeinit.c

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 *	Revision 1.8  1998/09/11 05:29:14  gklug
 *	add: init state of a port
 *
 *	Revision 1.7  1998/09/04 09:26:25  malthoff
 *	Short temporary modification.
 *
 *	Revision 1.6  1998/09/04 08:27:59  malthoff
 *	Remark the do-while in StopPort() because it never ends
 *	without a GE adapter.
 *
 *	Revision 1.5  1998/09/03 14:05:45  malthoff
 *	Change comment for SkGeInitPort(). Do not
 *	repair the queue sizes if invalid.
 *
 *	Revision 1.4  1998/09/03 10:03:19  malthoff
 *	Implement the new interface according to the
 *	reviewed interface specification.
 *
 *	Revision 1.3  1998/08/19 09:11:25  gklug
 *	fix: struct are removed from c-source (see CCC)
 *
 *	Revision 1.2  1998/07/28 12:33:58  malthoff
 *	Add 'IoC' parameter in function declaration and SK IO macros.
 *
 *	Revision 1.1  1998/07/23 09:48:57  malthoff
 *	Creation. First dummy 'C' file.
 *	SkGeInit(Level 0) is card_start for GE.
 *	SkGeDeInit() is card_stop for GE.
 *
 *
 ******************************************************************************/

#include "h/skdrv1st.h"
#include "h/skdrv2nd.h"

/* global variables ***********************************************************/

/* local variables ************************************************************/

#if (defined(DEBUG) || ((!defined(LINT)) && (!defined(SK_SLIM))))
static const char SysKonnectFileId[] =
	"@(#) $Id: skgeinit.c,v 1.93 2003/05/28 15:44:43 rschmidt Exp $ (C) Marvell.";
#endif

struct s_QOffTab {
	int	RxQOff;		/* Receive Queue Address Offset */
	int	XsQOff;		/* Sync Tx Queue Address Offset */
	int	XaQOff;		/* Async Tx Queue Address Offset */
};
static struct s_QOffTab QOffTab[] = {
	{Q_R1, Q_XS1, Q_XA1}, {Q_R2, Q_XS2, Q_XA2}
};

struct s_Config {
	char	ScanString[8];
	SK_U32	Value;
};

static struct s_Config OemConfig = {
	{'O','E','M','_','C','o','n','f'},
#ifdef SK_OEM_CONFIG
	OEM_CONFIG_VALUE,
#else
	0,
#endif
};

/******************************************************************************
 *
 *	SkGePollRxD() - Enable / Disable Descriptor Polling of RxD Ring
 *
 * Description:
 *	Enable or disable the descriptor polling of the receive descriptor
 *	ring (RxD) for port 'Port'.
 *	The new configuration is *not* saved over any SkGeStopPort() and
 *	SkGeInitPort() calls.
 *
 * Returns:
 *	nothing
 */
void SkGePollRxD(
SK_AC	*pAC,		/* adapter context */
SK_IOC	IoC,		/* IO context */
int		Port,		/* Port Index (MAC_1 + n) */
SK_BOOL PollRxD)	/* SK_TRUE (enable pol.), SK_FALSE (disable pol.) */
{
	SK_GEPORT *pPrt;

	pPrt = &pAC->GIni.GP[Port];

	SK_OUT32(IoC, Q_ADDR(pPrt->PRxQOff, Q_CSR), (PollRxD) ?
		CSR_ENA_POL : CSR_DIS_POL);
}	/* SkGePollRxD */


/******************************************************************************
 *
 *	SkGePollTxD() - Enable / Disable Descriptor Polling of TxD Rings
 *
 * Description:
 *	Enable or disable the descriptor polling of the transmit descriptor
 *	ring(s) (TxD) for port 'Port'.
 *	The new configuration is *not* saved over any SkGeStopPort() and
 *	SkGeInitPort() calls.
 *
 * Returns:
 *	nothing
 */
void SkGePollTxD(
SK_AC	*pAC,		/* adapter context */
SK_IOC	IoC,		/* IO context */
int		Port,		/* Port Index (MAC_1 + n) */
SK_BOOL PollTxD)	/* SK_TRUE (enable pol.), SK_FALSE (disable pol.) */
{
	SK_GEPORT *pPrt;
	SK_U32	DWord;

	pPrt = &pAC->GIni.GP[Port];

	DWord = (SK_U32)(PollTxD ? CSR_ENA_POL : CSR_DIS_POL);

	if (pPrt->PXSQSize != 0) {
		SK_OUT32(IoC, Q_ADDR(pPrt->PXsQOff, Q_CSR), DWord);
	}
	
	if (pPrt->PXAQSize != 0) {
		SK_OUT32(IoC, Q_ADDR(pPrt->PXaQOff, Q_CSR), DWord);
	}
}	/* SkGePollTxD */


/******************************************************************************
 *
 *	SkGeYellowLED() - Switch the yellow LED on or off.
 *
 * Description:
 *	Switch the yellow LED on or off.
 *
 * Note:
 *	This function may be called any time after SkGeInit(Level 1).
 *
 * Returns:
 *	nothing
 */
void SkGeYellowLED(
SK_AC	*pAC,		/* adapter context */
SK_IOC	IoC,		/* IO context */
int		State)		/* yellow LED state, 0 = OFF, 0 != ON */
{
	if (State == 0) {
		/* Switch yellow LED OFF */
		SK_OUT8(IoC, B0_LED, LED_STAT_OFF);
	}
	else {
		/* Switch yellow LED ON */
		SK_OUT8(IoC, B0_LED, LED_STAT_ON);
	}
}	/* SkGeYellowLED */


#if (!defined(SK_SLIM) || defined(GENESIS))
/******************************************************************************
 *
 *	SkGeXmitLED() - Modify the Operational Mode of a transmission LED.
 *
 * Description:
 *	The Rx or Tx LED which is specified by 'Led' will be
 *	enabled, disabled or switched on in test mode.
 *
 * Note:
 *	'Led' must contain the address offset of the LEDs INI register.
 *
 * Usage:
 *	SkGeXmitLED(pAC, IoC, MR_ADDR(Port, TX_LED_INI), SK_LED_ENA);
 *
 * Returns:
 *	nothing
 */
void SkGeXmitLED(
SK_AC	*pAC,		/* adapter context */
SK_IOC	IoC,		/* IO context */
int		Led,		/* offset to the LED Init Value register */
int		Mode)		/* Mode may be SK_LED_DIS, SK_LED_ENA, SK_LED_TST */
{
	SK_U32	LedIni;

	switch (Mode) {
	case SK_LED_ENA:
		LedIni = SK_XMIT_DUR * (SK_U32)pAC->GIni.GIHstClkFact / 100;
		SK_OUT32(IoC, Led + XMIT_LED_INI, LedIni);
		SK_OUT8(IoC, Led + XMIT_LED_CTRL, LED_START);
		break;
	case SK_LED_TST:
		SK_OUT8(IoC, Led + XMIT_LED_TST, LED_T_ON);
		SK_OUT32(IoC, Led + XMIT_LED_CNT, 100);
		SK_OUT8(IoC, Led + XMIT_LED_CTRL, LED_START);
		break;
	case SK_LED_DIS:
	default:
		/*
		 * Do NOT stop the LED Timer here. The LED might be
		 * in on state. But it needs to go off.
		 */
		SK_OUT32(IoC, Led + XMIT_LED_CNT, 0);
		SK_OUT8(IoC, Led + XMIT_LED_TST, LED_T_OFF);
		break;
	}
			
	/*
	 * 1000BT: The Transmit LED is driven by the PHY.
	 * But the default LED configuration is used for
	 * Level One and Broadcom PHYs.
	 * (Broadcom: It may be that PHY_B_PEC_EN_LTR has to be set.)
	 * (In this case it has to be added here. But we will see. XXX)
	 */
}	/* SkGeXmitLED */
#endif	/* !SK_SLIM || GENESIS */


/******************************************************************************
 *
 *	DoCalcAddr() - Calculates the start and the end address of a queue.
 *
 * Description:
 *	This function calculates the start and the end address of a queue.
 *  Afterwards the 'StartVal' is incremented to the next start position.
 *	If the port is already initialized the calculated values
 *	will be checked against the configured values and an
 *	error will be returned, if they are not equal.
 *	If the port is not initialized the values will be written to
 *	*StartAdr and *EndAddr.
 *
 * Returns:
 *	0:	success
 *	1:	configuration error
 */
static int DoCalcAddr(
SK_AC		*pAC, 				/* adapter context */
SK_GEPORT	SK_FAR *pPrt,		/* port index */
int			QuSize,				/* size of the queue to configure in kB */
SK_U32		SK_FAR *StartVal,	/* start value for address calculation */
SK_U32		SK_FAR *QuStartAddr,/* start addr to calculate */
SK_U32		SK_FAR *QuEndAddr)	/* end address to calculate */
{
	SK_U32	EndVal;
	SK_U32	NextStart;
	int		Rtv;

	Rtv = 0;
	if (QuSize == 0) {
		EndVal = *StartVal;
		NextStart = EndVal;
	}
	else {
		EndVal = *StartVal + ((SK_U32)QuSize * 1024) - 1;
		NextStart = EndVal + 1;
	}

	if (pPrt->PState >= SK_PRT_INIT) {
		if (*StartVal != *QuStartAddr || EndVal != *QuEndAddr) {
			Rtv = 1;
		}
	}
	else {
		*QuStartAddr = *StartVal;
		*QuEndAddr = EndVal;
	}

	*StartVal = NextStart;
	return(Rtv);
}	/* DoCalcAddr */

/******************************************************************************
 *
 *	SkGeInitAssignRamToQueues() - allocate default queue sizes
 *
 * Description:
 *	This function assigns the memory to the different queues and ports.
 *	When DualNet is set to SK_TRUE all ports get the same amount of memory.
 *  Otherwise the first port gets most of the memory and all the
 *	other ports just the required minimum.
 *	This function can only be called when pAC->GIni.GIRamSize and
 *	pAC->GIni.GIMacsFound have been initialized, usually this happens
 *	at init level 1
 *
 * Returns:
 *	0 - ok
 *	1 - invalid input values
 *	2 - not enough memory
 */

int SkGeInitAssignRamToQueues(
SK_AC	*pAC,			/* Adapter context */
int		ActivePort,		/* Active Port in RLMT mode */
SK_BOOL	DualNet)		/* adapter context */
{
	int	i;
	int	UsedKilobytes;			/* memory already assigned */
	int	ActivePortKilobytes;	/* memory available for active port */
	SK_GEPORT *pGePort;

	UsedKilobytes = 0;

	if (ActivePort >= pAC->GIni.GIMacsFound) {
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_INIT,
			("SkGeInitAssignRamToQueues: ActivePort (%d) invalid\n",
			ActivePort));
		return(1);
	}
	if (((pAC->GIni.GIMacsFound * (SK_MIN_RXQ_SIZE + SK_MIN_TXQ_SIZE)) +
		((RAM_QUOTA_SYNC == 0) ? 0 : SK_MIN_TXQ_SIZE)) > pAC->GIni.GIRamSize) {
		SK_DBG_MSG(pAC, SK_DBGMOD_HWM, SK_DBGCAT_INIT,
			("SkGeInitAssignRamToQueues: Not enough memory (%d)\n",
			 pAC->GIni.GIRamSize));
		return(2);
	}

	if (DualNet) {
		/* every port gets the same amount of memory */
		ActivePortKilobytes = pAC->GIni.GIRamSize / pAC->GIni.GIMacsFound;
		for (i = 0; i < pAC->GIni.GIMacsFound; i++) {

			pGePort = &pAC->GIni.GP[i];
			
			/* take away the minimum memory for active queues */
			ActivePortKilobytes -= (SK_MIN_RXQ_SIZE + SK_MIN_TXQ_SIZE);

			/* receive queue gets the minimum + 80% of the rest */
			pGePort->PRxQSize = (int) (ROUND_QUEUE_SIZE_KB((
				ActivePortKilobytes * (unsigned long) RAM_QUOTA_RX) / 100))
				+ SK_MIN_RXQ_SIZE;

			ActivePortKilobytes -= (pGePort->PRxQSize - SK_MIN_RXQ_SIZE);

			/* synchronous transmit queue */
			pGePort->PXSQSize = 0;

			/* asynchronous transmit queue */
			pGePort->PXAQSize = (int) ROUND_QUEUE_SIZE_KB(ActivePortKilobytes +
				SK_MIN_TXQ_SIZE);
		}
	}
	else {	
		/* Rlmt Mode or single link adapter */

		/* Set standby queue size defaults for all standby ports */
		for (i = 0; i < pAC->GIni.GIMacsFound; i++) {

			if (i != ActivePort) {
				pGePort = &pAC->GIni.GP[i];

				pGePort->PRxQSize = SK_MIN_RXQ_SIZE;
				pGePort->PXAQSize = SK_MIN_TXQ_SIZE;
				pGePort->PXSQSize = 0;

				/* Count used RAM */
				UsedKilobytes += pGePort->PRxQSize + pGePort->PXAQSize;
			}
		}
		/* what's left? */
		ActivePortKilobytes = pAC->GIni.GIRamSize - UsedKilobytes;

		/* assign it to the active port */
		/* first take away the minimum memory */
		ActivePortKilobytes -= (SK_MIN_RXQ_SIZE + SK_MIN_TXQ_SIZE);
		pGePort = &pAC->GIni.GP[ActivePort];

		/* receive queue get's the minimum + 80% of the rest */
		pGePort->PRxQSize = (int) (ROUND_QUEUE_SIZE_KB((ActivePortKilobytes *
			(unsigned long) RAM_QUOTA_RX) / 100)) + SK_MIN_RXQ_SIZE;

		ActivePortKilobytes -= (pGePort->PRxQSize - SK_MIN_RXQ_SIZE);

		/* synchronous transmit queue */
		pGePort->PXSQSize = 0;

		/* asynchronous transmit queue */
		pGePort->PXAQSize = (int) ROUND_QUEUE_SIZE_KB(ActivePortKilobytes) +
			SK_MIN_TXQ_SIZE;
	}
#ifdef VCPU
	VCPUprintf(0, "PRxQSize=%u, PXSQSize=%u, PXAQSize=%u\n",
		pGePort->PRxQSize, pGePort->PXSQSize, pGePort->PXAQSize);
#endif /* VCPU */

	return(0);
}	/* SkGeInitAssignRamToQueues */

/******************************************************************************
 *
 *	SkGeCheckQSize() - Checks the Adapters Queue Size Configuration
 *
 * Description:
 *	This function verifies the Queue Size Configuration specified
 *	in the variables PRxQSize, PXSQSize, and PXAQSize of all
 *	used ports.
 *	This requirements must be fullfilled to have a valid configuration:
 *		- The size of all queues must not exceed GIRamSize.
 *		- The queue sizes must be specified in units of 8 kB.
 *		- The size of Rx queues of available ports must not be
 *		  smaller than 16 kB.
 *		- The size of at least one Tx queue (synch. or asynch.)
 *        of available ports must not be smaller than 16 kB
 *        when Jumbo Frames are used.
 *		- The RAM start and end addresses must not be changed
 *		  for ports which are already initialized.
 *	Furthermore SkGeCheckQSize() defines the Start and End Addresses
 *  of all ports and stores them into the HWAC port	structure.
 *
 * Returns:
 *	0:	Queue Size Configuration valid
 *	1:	Queue Size Configuration invalid
 */
static int SkGeCheckQSize(
SK_AC	 *pAC,		/* adapter context */
int		 Port)		/* port index */
{
	SK_GEPORT *pPrt;
	int	i;
	int	Rtv;
	int	Rtv2;
	SK_U32	StartAddr;
#ifndef SK_SLIM
	int	UsedMem;	/* total memory used (max. found ports) */
#endif	

	Rtv = 0;
	
#ifndef SK_SLIM