skgeinit.c

内核linux2.4.20,可跟rtlinux3.2打补丁 组成实时linux系统,编译内核

/******************************************************************************
 *
 * Name:	skgeinit.c
 * Project:	GEnesis, PCI Gigabit Ethernet Adapter
 * Version:	$Revision: 1.63 $
 * Date:	$Date: 2001/04/05 11:02:09 $
 * Purpose:	Contains functions to initialize the GE HW
 *
 ******************************************************************************/

/******************************************************************************
 *
 *	(C)Copyright 1998-2001 SysKonnect GmbH.
 *
 *	This program is free software; you can redistribute it and/or modify
 *	it under the terms of the GNU General Public License as published by
 *	the Free Software Foundation; either version 2 of the License, or
 *	(at your option) any later version.
 *
 *	The information in this file is provided "AS IS" without warranty.
 *
 ******************************************************************************/

/******************************************************************************
 *
 * History:
 *
 *	$Log: skgeinit.c,v $
 *	Revision 1.63  2001/04/05 11:02:09  rassmann
 *	Stop Port check of the STOP bit did not take 2/18 sec as wanted.
 *	
 *	Revision 1.62  2001/02/07 07:54:21  rassmann
 *	Corrected copyright.
 *	
 *	Revision 1.61  2001/01/31 15:31:40  gklug
 *	fix: problem with autosensing an SR8800 switch
 *	
 *	Revision 1.60  2000/10/18 12:22:21  cgoos
 *	Added workaround for half duplex hangup.
 *	
 *	Revision 1.59  2000/10/10 11:22:06  gklug
 *	add: in manual half duplex mode ignore carrier extension errors
 *	
 *	Revision 1.58  2000/10/02 14:10:27  rassmann
 *	Reading BCOM PHY after releasing reset until it returns a valid value.
 *	
 *	Revision 1.57  2000/08/03 14:55:28  rassmann
 *	Waiting for I2C to be ready before de-initializing adapter
 *	(prevents sensors from hanging up).
 *	
 *	Revision 1.56  2000/07/27 12:16:48  gklug
 *	fix: Stop Port check of the STOP bit does now take 2/18 sec as wanted
 *	
 *	Revision 1.55  1999/11/22 13:32:26  cgoos
 *	Changed license header to GPL.
 *	
 *	Revision 1.54  1999/10/26 07:32:54  malthoff
 *	Initialize PHWLinkUp with SK_FALSE. Required for Diagnostics.
 *	
 *	Revision 1.53  1999/08/12 19:13:50  malthoff
 *	Fix for 1000BT. Do not owerwrite XM_MMU_CMD when
 *	disabling receiver and transmitter. Other bits
 *	may be lost.
 *	
 *	Revision 1.52  1999/07/01 09:29:54  gklug
 *	fix: DoInitRamQueue needs pAC
 *	
 *	Revision 1.51  1999/07/01 08:42:21  gklug
 *	chg: use Store & forward for RAM buffer when Jumbos are used
 *	
 *	Revision 1.50  1999/05/27 13:19:38  cgoos
 *	Added Tx PCI watermark initialization.
 *	Removed Tx RAM queue Store & Forward setting.
 *	
 *	Revision 1.49  1999/05/20 14:32:45  malthoff
 *	SkGeLinkLED() is completly removed now.
 *	
 *	Revision 1.48  1999/05/19 07:28:24  cgoos
 *	SkGeLinkLED no more available for drivers.
 *	Changes for 1000Base-T.
 *	
 *	Revision 1.47  1999/04/08 13:57:45  gklug
 *	add: Init of new port struct fiels PLinkResCt
 *	chg: StopPort Timer check
 *	
 *	Revision 1.46  1999/03/25 07:42:15  malthoff
 *	SkGeStopPort(): Add workaround for cache incoherency.
 *			Create error log entry, disable port, and
 *			exit loop if it does not terminate.
 *	Add XM_RX_LENERR_OK to the default value for the
 *	XMAC receive command register.
 *	
 *	Revision 1.45  1999/03/12 16:24:47  malthoff
 *	Remove PPollRxD and PPollTxD.
 *	Add check for GIPollTimerVal.
 *
 *	Revision 1.44  1999/03/12 13:40:23  malthoff
 *	Fix: SkGeXmitLED(), SK_LED_TST mode does not work.
 *	Add: Jumbo frame support.
 *	Chg: Resolution of parameter IntTime in SkGeCfgSync().
 *
 *	Revision 1.43  1999/02/09 10:29:46  malthoff
 *	Bugfix: The previous modification again also for the second location.
 *
 *	Revision 1.42  1999/02/09 09:35:16  malthoff
 *	Bugfix: The bits '66 MHz Capable' and 'NEWCAP are reset while
 *		clearing the error bits in the PCI status register.
 *
 *	Revision 1.41  1999/01/18 13:07:02  malthoff
 *	Bugfix: Do not use CFG cycles after during Init- or Runtime, because
 *		they may not be available after Boottime.
 *
 *	Revision 1.40  1999/01/11 12:40:49  malthoff
 *	Bug fix: PCI_STATUS: clearing error bits sets the UDF bit.
 *
 *	Revision 1.39  1998/12/11 15:17:33  gklug
 *	chg: Init LipaAutoNeg with Unknown
 *
 *	Revision 1.38  1998/12/10 11:02:57  malthoff
 *	Disable Error Log Message when calling SkGeInit(level 2)
 *	more than once.
 *
 *	Revision 1.37  1998/12/07 12:18:25  gklug
 *	add: refinement of autosense mode: take into account the autoneg cap of LiPa
 *
 *	Revision 1.36  1998/12/07 07:10:39  gklug
 *	fix: init values of LinkBroken/ Capabilities for management
 *
 *	Revision 1.35  1998/12/02 10:56:20  gklug
 *	fix: do NOT init LoinkSync Counter.
 *
 *	Revision 1.34  1998/12/01 10:53:21  gklug
 *	add: init of additional Counters for workaround
 *
 *	Revision 1.33  1998/12/01 10:00:49  gklug
 *	add: init PIsave var in Port struct
 *
 *	Revision 1.32  1998/11/26 14:50:40  gklug
 *	chg: Default is autosensing with AUTOFULL mode
 *
 *	Revision 1.31  1998/11/25 15:36:16  gklug
 *	fix: do NOT stop LED Timer when port should be stoped
 *
 *	Revision 1.30  1998/11/24 13:15:28  gklug
 *	add: Init PCkeckPar struct member
 *
 *	Revision 1.29  1998/11/18 13:19:27  malthoff
 *	Disable packet arbiter timeouts on receive side.
 *	Use maximum timeout value for packet arbiter
 *	transmit timeouts.
 *	Add TestStopBit() function to handle stop RX/TX
 *	problem with active descriptor poll timers.
 *	Bug Fix: Descriptor Poll Timer not started, beacuse
 *	GIPollTimerVal was initilaized with 0.
 *
 *	Revision 1.28  1998/11/13 14:24:26  malthoff
 *	Bug Fix: SkGeStopPort() may hang if a Packet Arbiter Timout
 *	is pending or occurs while waiting for TX_STOP and RX_STOP.
 *	The PA timeout is cleared now while waiting for TX- or RX_STOP.
 *
 *	Revision 1.27  1998/11/02 11:04:36  malthoff
 *	fix the last fix
 *
 *	Revision 1.26  1998/11/02 10:37:03  malthoff
 *	Fix: SkGePollTxD() enables always the synchronounous poll timer.
 *
 *	Revision 1.25  1998/10/28 07:12:43  cgoos
 *	Fixed "LED_STOP" in SkGeLnkSyncCnt, "== SK_INIT_IO" in SkGeInit.
 *	Removed: Reset of RAM Interface in SkGeStopPort.
 *
 *	Revision 1.24  1998/10/27 08:13:12  malthoff
 *	Remove temporary code.
 *
 *	Revision 1.23  1998/10/26 07:45:03  malthoff
 *	Add Address Calculation Workaround: If the EPROM byte
 *	Id is 3, the address offset is 512 kB.
 *	Initialize default values for PLinkMode and PFlowCtrlMode.
 *
 *	Revision 1.22  1998/10/22 09:46:47  gklug
 *	fix SysKonnectFileId typo
 *
 *	Revision 1.21  1998/10/20 12:11:56  malthoff
 *	Don't dendy the Queue config if the size of the unused
 *	rx qeueu is zero.
 *
 *	Revision 1.20  1998/10/19 07:27:58  malthoff
 *	SkGeInitRamIface() is public to be called by diagnostics.
 *
 *	Revision 1.19  1998/10/16 13:33:45  malthoff
 *	Fix: enabling descriptor polling is not allowed until
 *	the descriptor addresses are set. Descriptor polling
 *	must be handled by the driver.
 *
 *	Revision 1.18  1998/10/16 10:58:27  malthoff
 *	Remove temp. code for Diag prototype.
 *	Remove lint warning for dummy reads.
 *	Call SkGeLoadLnkSyncCnt() during SkGeInitPort().
 *
 *	Revision 1.17  1998/10/14 09:16:06  malthoff
 *	Change parameter LimCount and programming of
 *	the limit counter in SkGeCfgSync().
 *
 *	Revision 1.16  1998/10/13 09:21:16  malthoff
 *	Don't set XM_RX_SELF_RX in RxCmd Reg, because it's
 *	like a Loopback Mode in half duplex.
 *
 *	Revision 1.15  1998/10/09 06:47:40  malthoff
 *	SkGeInitMacArb(): set recovery counters init value
 *	to zero although this counters are not uesd.
 *	Bug fix in Rx Upper/Lower Pause Threshold calculation.
 *	Add XM_RX_SELF_RX to RxCmd.
 *
 *	Revision 1.14  1998/10/06 15:15:53  malthoff
 *	Make sure no pending IRQ is cleared in SkGeLoadLnkSyncCnt().
 *
 *	Revision 1.13  1998/10/06 14:09:36  malthoff
 *	Add SkGeLoadLnkSyncCnt(). Modify
 *	the 'port stopped' condition according
 *	to the current problem report.
 *
 *	Revision 1.12  1998/10/05 08:17:21  malthoff
 *	Add functions: SkGePollRxD(), SkGePollTxD(),
 *	DoCalcAddr(), SkGeCheckQSize(),
 *	DoInitRamQueue(), and SkGeCfgSync().
 *	Add coding for SkGeInitMacArb(), SkGeInitPktArb(),
 *	SkGeInitMacFifo(), SkGeInitRamBufs(),
 *	SkGeInitRamIface(), and SkGeInitBmu().
 *
 *	Revision 1.11  1998/09/29 08:26:29  malthoff
 *	bug fix: SkGeInit0() 'i' should be increment.
 *
 *	Revision 1.10  1998/09/28 13:19:01  malthoff
 *	Coding time: Save the done work.
 *	Modify SkGeLinkLED(), add SkGeXmitLED(),
 *	define SkGeCheckQSize(), SkGeInitMacArb(),
 *	SkGeInitPktArb(), SkGeInitMacFifo(),
 *	SkGeInitRamBufs(), SkGeInitRamIface(),
 *	and SkGeInitBmu(). Do coding for SkGeStopPort(),
 *	SkGeInit1(), SkGeInit2(), and SkGeInit3().
 *	Do coding for SkGeDinit() and SkGeInitPort().
 *
 *	Revision 1.9  1998/09/16 14:29:05  malthoff
 *	Some minor changes.
 *
 *	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 ML.
 *	SkGeDeInit() is card_stop for ML.
 *
 *
 ******************************************************************************/

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

/* defines ********************************************************************/

/* defines for SkGeXmitLed() */
#define XMIT_LED_INI	0
#define XMIT_LED_CNT	(RX_LED_VAL - RX_LED_INI)
#define XMIT_LED_CTRL	(RX_LED_CTRL- RX_LED_INI)
#define XMIT_LED_TST	(RX_LED_TST - RX_LED_INI)

/* Queue Size units */
#define QZ_UNITS	0x7

/* Types of RAM Buffer Queues */
#define SK_RX_SRAM_Q	1	/* small receive queue */
#define SK_RX_BRAM_Q	2	/* big receive queue */
#define SK_TX_RAM_Q	3	/* small or big transmit queue */

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

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

static const char SysKonnectFileId[] =
	"@(#)$Id: skgeinit.c,v 1.63 2001/04/05 11:02:09 rassmann Exp $ (C) SK ";

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}
};


/******************************************************************************
 *
 *	SkGePollRxD() - Enable/Disable Descriptor Polling of RxD Ring
 *
 * Description:
 *	Enable or disable the descriptor polling the receive descriptor
 *	ring (RxD) of 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];

	if (PollRxD) {
		SK_OUT32(IoC, Q_ADDR(pPrt->PRxQOff, Q_CSR), CSR_ENA_POL);
	}
	else {
		SK_OUT32(IoC, Q_ADDR(pPrt->PRxQOff, Q_CSR), CSR_DIS_POL);
	}
}	/* SkGePollRxD */


/******************************************************************************
 *
 *	SkGePollTxD() - Enable/Disable Descriptor Polling of TxD Rings
 *
 * Description:
 *	Enable or disable the descriptor polling the transmit descriptor
 *	ring(s) (RxD) of 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];

	if (PollTxD) {
		DWord = CSR_ENA_POL;
	}
	else {
		DWord = 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 */


/******************************************************************************
 *
 *	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 */


/******************************************************************************
 *
 *	DoCalcAddr() - Calculates the start and the end address of a queue.
 *
 * Description:
 *	This function calculates the start- end 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	*pPrt,			/* port index */
int			QuSize,			/* size of the queue to configure in kB */
SK_U32		*StartVal,		/* start value for address calculation */
SK_U32		*QuStartAddr,	/* start addr to calculate */