skge.c

linux-2.4.29操作系统的源码

		if ((pAC->GIni.GIMacsFound == 2 ) && (pAC->RlmtNets == 2)) {
			if ((dev = init_etherdev(NULL, sizeof(DEV_NET))) == 0) {
				printk(KERN_ERR "Unable to allocate etherdev "
					"structure!\n");
				break;
			}

			pAC->dev[1]   = dev;
			pNet          = dev->priv;
			pNet->PortNr  = 1;
			pNet->NetNr   = 1;
			pNet->pAC     = pAC;
			pNet->Mtu     = 1500;
			pNet->Up      = 0;

			dev->open               = &SkGeOpen;
			dev->stop               = &SkGeClose;
			dev->hard_start_xmit    = &SkGeXmit;
			dev->get_stats          = &SkGeStats;
			dev->set_multicast_list = &SkGeSetRxMode;
			dev->set_mac_address    = &SkGeSetMacAddr;
			dev->do_ioctl           = &SkGeIoctl;
			dev->change_mtu         = &SkGeChangeMtu;
			dev->flags             &= ~IFF_RUNNING;

#ifdef SK_ZEROCOPY
#ifdef USE_SK_TX_CHECKSUM
			if (pAC->ChipsetType) {
				/* SG and ZEROCOPY - fly baby... */
				dev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
			}
#endif
#endif

#ifdef CONFIG_PROC_FS
			pProcFile = create_proc_entry(dev->name,
				S_IFREG | S_IXUSR | S_IWGRP | S_IROTH,
				pSkRootDir);
			pProcFile->read_proc  = sk_proc_read;
			pProcFile->write_proc = NULL;
			pProcFile->nlink      = 1;
			pProcFile->size       = sizeof(dev->name + 1);
			pProcFile->data       = (void *)pProcFile;
			pProcFile->owner      = THIS_MODULE;
#endif

			memcpy((caddr_t) &dev->dev_addr,
			(caddr_t) &pAC->Addr.Net[1].CurrentMacAddress, 6);
	
			printk("%s: %s\n", dev->name, pAC->DeviceStr);
			printk("      PrefPort:B  RlmtMode:Dual Check Link State\n");
		}

		/* Save the hardware revision */
		pAC->HWRevision = (((pAC->GIni.GIPciHwRev >> 4) & 0x0F)*10) +
			(pAC->GIni.GIPciHwRev & 0x0F);

		/* Set driver globals */
		pAC->Pnmi.pDriverFileName    = DRIVER_FILE_NAME;
		pAC->Pnmi.pDriverReleaseDate = DRIVER_REL_DATE;

		SK_MEMSET(&(pAC->PnmiBackup), 0, sizeof(SK_PNMI_STRUCT_DATA));
		SK_MEMCPY(&(pAC->PnmiBackup), &(pAC->PnmiStruct), 
				sizeof(SK_PNMI_STRUCT_DATA));

		/*
		 * This is bollocks, but we need to tell the net-init
		 * code that it shall go for the next device.
		 */
#ifndef MODULE
		dev->base_addr = 0;
#endif
	}

	/*
	 * If we're at this point we're going through skge_probe() for
	 * the first time.  Return success (0) if we've initialized 1
	 * or more boards. Otherwise, return failure (-ENODEV).
	 */

	return boards_found;
} /* skge_probe */


/*****************************************************************************
 *
 * 	SkGeInitPCI - Init the PCI resources
 *
 * Description:
 *	This function initialize the PCI resources and IO
 *
 * Returns: N/A
 *	
 */
int SkGeInitPCI(SK_AC *pAC)
{
	struct SK_NET_DEVICE *dev = pAC->dev[0];
	struct pci_dev *pdev = pAC->PciDev;
	int retval;

	if (pci_enable_device(pdev) != 0) {
		return 1;
	}

	dev->mem_start = pci_resource_start (pdev, 0);
	pci_set_master(pdev);

	if (pci_request_regions(pdev, pAC->Name) != 0) {
		retval = 2;
		goto out_disable;
	}

#ifdef SK_BIG_ENDIAN
	/*
	 * On big endian machines, we use the adapter's aibility of
	 * reading the descriptors as big endian.
	 */
	{
		SK_U32		our2;
		SkPciReadCfgDWord(pAC, PCI_OUR_REG_2, &our2);
		our2 |= PCI_REV_DESC;
		SkPciWriteCfgDWord(pAC, PCI_OUR_REG_2, our2);
	}
#endif

	/*
	 * Remap the regs into kernel space.
	 */
	pAC->IoBase = (char*)ioremap_nocache(dev->mem_start, 0x4000);

	if (!pAC->IoBase){
		retval = 3;
		goto out_release;
	}

	return 0;

 out_release:
	pci_release_regions(pdev);
 out_disable:
	pci_disable_device(pdev);
	return retval;
}


/*****************************************************************************
 *
 * 	FreeResources - release resources allocated for adapter
 *
 * Description:
 *	This function releases the IRQ, unmaps the IO and
 *	frees the desriptor ring.
 *
 * Returns: N/A
 *	
 */
static void FreeResources(struct SK_NET_DEVICE *dev)
{
SK_U32 AllocFlag;
DEV_NET		*pNet;
SK_AC		*pAC;

	if (dev->priv) {
		pNet = (DEV_NET*) dev->priv;
		pAC = pNet->pAC;
		AllocFlag = pAC->AllocFlag;
		if (pAC->PciDev) {
			pci_release_regions(pAC->PciDev);
		}
		if (AllocFlag & SK_ALLOC_IRQ) {
			free_irq(dev->irq, dev);
		}
		if (pAC->IoBase) {
			iounmap(pAC->IoBase);
		}
		if (pAC->pDescrMem) {
			BoardFreeMem(pAC);
		}
	}
	
} /* FreeResources */

MODULE_AUTHOR("Mirko Lindner <[e-mail]>");
MODULE_DESCRIPTION("SysKonnect SK-NET Gigabit Ethernet SK-98xx driver");
MODULE_LICENSE("GPL");
MODULE_PARM(Speed_A,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(Speed_B,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(AutoNeg_A,  "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(AutoNeg_B,  "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(DupCap_A,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(DupCap_B,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(FlowCtrl_A, "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(FlowCtrl_B, "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(Role_A,	"1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(Role_B,	"1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(ConType,	"1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(PrefPort,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(RlmtMode,   "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
/* not used, just there because every driver should have them: */
MODULE_PARM(options,    "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "i");
MODULE_PARM(debug,      "i");
/* used for interrupt moderation */
MODULE_PARM(IntsPerSec,     "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "i");
MODULE_PARM(Moderation,     "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(Stats,          "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(ModerationMask, "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");
MODULE_PARM(AutoSizing,     "1-" __MODULE_STRING(SK_MAX_CARD_PARAM) "s");


#ifdef LINK_SPEED_A
static char *Speed_A[SK_MAX_CARD_PARAM] = LINK_SPEED;
#else
static char *Speed_A[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef LINK_SPEED_B
static char *Speed_B[SK_MAX_CARD_PARAM] = LINK_SPEED;
#else
static char *Speed_B[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef AUTO_NEG_A
static char *AutoNeg_A[SK_MAX_CARD_PARAM] = AUTO_NEG_A;
#else
static char *AutoNeg_A[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef DUP_CAP_A
static char *DupCap_A[SK_MAX_CARD_PARAM] = DUP_CAP_A;
#else
static char *DupCap_A[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef FLOW_CTRL_A
static char *FlowCtrl_A[SK_MAX_CARD_PARAM] = FLOW_CTRL_A;
#else
static char *FlowCtrl_A[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef ROLE_A
static char *Role_A[SK_MAX_CARD_PARAM] = ROLE_A;
#else
static char *Role_A[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef AUTO_NEG_B
static char *AutoNeg_B[SK_MAX_CARD_PARAM] = AUTO_NEG_B;
#else
static char *AutoNeg_B[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef DUP_CAP_B
static char *DupCap_B[SK_MAX_CARD_PARAM] = DUP_CAP_B;
#else
static char *DupCap_B[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef FLOW_CTRL_B
static char *FlowCtrl_B[SK_MAX_CARD_PARAM] = FLOW_CTRL_B;
#else
static char *FlowCtrl_B[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef ROLE_B
static char *Role_B[SK_MAX_CARD_PARAM] = ROLE_B;
#else
static char *Role_B[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef CON_TYPE
static char *ConType[SK_MAX_CARD_PARAM] = CON_TYPE;
#else
static char *ConType[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef PREF_PORT
static char *PrefPort[SK_MAX_CARD_PARAM] = PREF_PORT;
#else
static char *PrefPort[SK_MAX_CARD_PARAM] = {"", };
#endif

#ifdef RLMT_MODE
static char *RlmtMode[SK_MAX_CARD_PARAM] = RLMT_MODE;
#else
static char *RlmtMode[SK_MAX_CARD_PARAM] = {"", };
#endif

static int debug = 0; /* not used */
static int options[SK_MAX_CARD_PARAM] = {0, }; /* not used */

static int   IntsPerSec[SK_MAX_CARD_PARAM];
static char *Moderation[SK_MAX_CARD_PARAM];
static char *ModerationMask[SK_MAX_CARD_PARAM];
static char *AutoSizing[SK_MAX_CARD_PARAM];
static char *Stats[SK_MAX_CARD_PARAM];


/*****************************************************************************
 *
 * 	skge_init_module - module initialization function
 *
 * Description:
 *	Very simple, only call skge_probe and return approriate result.
 *
 * Returns:
 *	0, if everything is ok
 *	!=0, on error
 */
static int __init skge_init_module(void)
{
	int cards;
	SkGeRootDev = NULL;
	
	/* just to avoid warnings ... */
	debug = 0;
	options[0] = 0;

	cards = skge_probe();
	if (cards == 0) {
		printk("sk98lin: No adapter found.\n");
	}
	return cards ? 0 : -ENODEV;
} /* skge_init_module */


/*****************************************************************************
 *
 * 	skge_cleanup_module - module unload function
 *
 * Description:
 *	Disable adapter if it is still running, free resources,
 *	free device struct.
 *
 * Returns: N/A
 */
static void __exit skge_cleanup_module(void)
{
DEV_NET		*pNet;
SK_AC		*pAC;
struct SK_NET_DEVICE *next;
unsigned long Flags;
SK_EVPARA EvPara;

	while (SkGeRootDev) {
		pNet = (DEV_NET*) SkGeRootDev->priv;
		pAC = pNet->pAC;
		next = pAC->Next;

		netif_stop_queue(SkGeRootDev);
		SkGeYellowLED(pAC, pAC->IoBase, 0);

		if(pAC->BoardLevel == SK_INIT_RUN) {
			/* board is still alive */
			spin_lock_irqsave(&pAC->SlowPathLock, Flags);
			EvPara.Para32[0] = 0;
			EvPara.Para32[1] = -1;
			SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
			EvPara.Para32[0] = 1;
			EvPara.Para32[1] = -1;
			SkEventQueue(pAC, SKGE_RLMT, SK_RLMT_STOP, EvPara);
			SkEventDispatcher(pAC, pAC->IoBase);
			/* disable interrupts */
			SK_OUT32(pAC->IoBase, B0_IMSK, 0);
			SkGeDeInit(pAC, pAC->IoBase);
			spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
			pAC->BoardLevel = SK_INIT_DATA;
			/* We do NOT check here, if IRQ was pending, of course*/
		}

		if(pAC->BoardLevel == SK_INIT_IO) {
			/* board is still alive */
			SkGeDeInit(pAC, pAC->IoBase);
			pAC->BoardLevel = SK_INIT_DATA;
		}

		if ((pAC->GIni.GIMacsFound == 2) && pAC->RlmtNets == 2){
			unregister_netdev(pAC->dev[1]);
			kfree(pAC->dev[1]);
		}

		FreeResources(SkGeRootDev);

		SkGeRootDev->get_stats = NULL;
		/*
		 * otherwise unregister_netdev calls get_stats with
		 * invalid IO ...  :-(
		 */
		unregister_netdev(SkGeRootDev);
		kfree(SkGeRootDev);
		kfree(pAC);
		SkGeRootDev = next;
	}

#ifdef CONFIG_PROC_FS
	/* clear proc-dir */
	remove_proc_entry(pSkRootDir->name, proc_net);
#endif

} /* skge_cleanup_module */

module_init(skge_init_module);
module_exit(skge_cleanup_module);


/*****************************************************************************
 *
 * 	SkGeBoardInit - do level 0 and 1 initialization
 *
 * Description:
 *	This function prepares the board hardware for running. The desriptor
 *	ring is set up, the IRQ is allocated and the configuration settings
 *	are examined.
 *
 * Returns:
 *	0, if everything is ok
 *	!=0, on error
 */
static int __init SkGeBoardInit(struct SK_NET_DEVICE *dev, SK_AC *pAC)
{
short	i;
unsigned long Flags;
char	*DescrString = "sk98lin: Driver for Linux"; /* this is given to PNMI */
char	*VerStr	= VER_STRING;
int	Ret;			/* return code of request_irq */
SK_BOOL	DualNet;

	SK_DBG_MSG(NULL, SK_DBGMOD_DRV, SK_DBGCAT_DRV_ENTRY,
		("IoBase: %08lX\n", (unsigned long)pAC->IoBase));
	for (i=0; i<SK_MAX_MACS; i++) {
		pAC->TxPort[i][0].HwAddr = pAC->IoBase + TxQueueAddr[i][0];
		pAC->TxPort[i][0].PortIndex = i;
		pAC->RxPort[i].HwAddr = pAC->IoBase + RxQueueAddr[i];
		pAC->RxPort[i].PortIndex = i;
	}

	/* Initialize the mutexes */
	for (i=0; i<SK_MAX_MACS; i++) {
		spin_lock_init(&pAC->TxPort[i][0].TxDesRingLock);
		spin_lock_init(&pAC->RxPort[i].RxDesRingLock);
	}
	spin_lock_init(&pAC->SlowPathLock);

	/* level 0 init common modules here */
	
	spin_lock_irqsave(&pAC->SlowPathLock, Flags);
	/* Does a RESET on board ...*/
	if (SkGeInit(pAC, pAC->IoBase, SK_INIT_DATA) != 0) {
		printk("HWInit (0) failed.\n");
		spin_unlock_irqrestore(&pAC->SlowPathLock, Flags);
		return(-EAGAIN);
	}
	SkI2cInit(  pAC, pAC->IoBase, SK_INIT_DATA);
	SkEventInit(pAC, pAC->IoBase, SK_INIT_DATA);
	SkPnmiInit( pAC, pAC->IoBase, SK_INIT_DATA);
	SkAddrInit( pAC, pAC->IoBase, SK_INIT_DATA);
	SkRlmtInit( pAC, pAC->IoBase, SK_INIT_DATA);
	SkTimerInit(pAC, pAC->IoBase, SK_INIT_DATA);

	pAC->BoardLevel = SK_INIT_DATA;
	pAC->RxBufSize  = ETH_BUF_SIZE;