drivers/isdn/hisax/nj_u.c - kernel/panda - Git at Google

 /* $Id: nj_u.c,v 2.14.2.3 2004/01/13 14:31:26 keil Exp $
  *
  * This software may be used and distributed according to the terms
  * of the GNU General Public License, incorporated herein by reference.
  *
  */

 #include <linux/config.h>
 #include <linux/init.h>
 #include "hisax.h"
 #include "icc.h"
 #include "isdnl1.h"
 #include <linux/pci.h>
 #include <linux/interrupt.h>
 #include <linux/ppp_defs.h>
 #include "netjet.h"

 const char *NETjet_U_revision = "$Revision: 2.14.2.3 $";

 static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off)
 {
 	return(5);
 }

 static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value)
 {
 }

 static irqreturn_t
 netjet_u_interrupt(int intno, void *dev_id, struct pt_regs *regs)
 {
 	struct IsdnCardState *cs = dev_id;
 	u_char val, sval;
 	u_long flags;

 	spin_lock_irqsave(&cs->lock, flags);
 	if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
 		NETJET_ISACIRQ)) {
 		val = NETjet_ReadIC(cs, ICC_ISTA);
 		if (cs->debug & L1_DEB_ISAC)
 			debugl1(cs, "tiger: i1 %x %x", sval, val);
 		if (val) {
 			icc_interrupt(cs, val);
 			NETjet_WriteIC(cs, ICC_MASK, 0xFF);
 			NETjet_WriteIC(cs, ICC_MASK, 0x0);
 		}
 	}
 	/* start new code 13/07/00 GE */
 	/* set bits in sval to indicate which page is free */
 	if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
 		inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
 		/* the 2nd write page is free */
 		sval = 0x08;
 	else	/* the 1st write page is free */
 		sval = 0x04;
 	if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
 		inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
 		/* the 2nd read page is free */
 		sval = sval | 0x02;
 	else	/* the 1st read page is free */
 		sval = sval | 0x01;
 	if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
 	{
 		if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
 			spin_unlock_irqrestore(&cs->lock, flags);
 			return IRQ_HANDLED;
 		}
 		cs->hw.njet.irqstat0 = sval;
 		if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
 			(cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
 			/* we have a read dma int */
 			read_tiger(cs);
 		if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
 			(cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
 			/* we have a write dma int */
 			write_tiger(cs);
 		/* end new code 13/07/00 GE */
 		test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
 	}
 	spin_unlock_irqrestore(&cs->lock, flags);
 	return IRQ_HANDLED;
 }

 static void
 reset_netjet_u(struct IsdnCardState *cs)
 {
 	cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
 	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 	mdelay(10);
 	cs->hw.njet.ctrl_reg = 0x40;  /* Reset Off and status read clear */
 	/* now edge triggered for TJ320 GE 13/07/00 */
 	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 	mdelay(10);
 	cs->hw.njet.auxd = 0xC0;
 	cs->hw.njet.dmactrl = 0;
 	byteout(cs->hw.njet.auxa, 0);
 	byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
 	byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
 	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
 }

 static int
 NETjet_U_card_msg(struct IsdnCardState *cs, int mt, void *arg)
 {
 	u_long flags;

 	switch (mt) {
 		case CARD_RESET:
 			spin_lock_irqsave(&cs->lock, flags);
 			reset_netjet_u(cs);
 			spin_unlock_irqrestore(&cs->lock, flags);
 			return(0);
 		case CARD_RELEASE:
 			release_io_netjet(cs);
 			return(0);
 		case CARD_INIT:
 			spin_lock_irqsave(&cs->lock, flags);
 			inittiger(cs);
 			reset_netjet_u(cs);
 			clear_pending_icc_ints(cs);
 			initicc(cs);
 			/* Reenable all IRQ */
 			cs->writeisac(cs, ICC_MASK, 0);
 			spin_unlock_irqrestore(&cs->lock, flags);
 			return(0);
 		case CARD_TEST:
 			return(0);
 	}
 	return(0);
 }

 static struct pci_dev *dev_netjet __initdata = NULL;

 int __init
 setup_netjet_u(struct IsdnCard *card)
 {
 	int bytecnt;
 	struct IsdnCardState *cs = card->cs;
 	char tmp[64];
 #ifdef CONFIG_PCI
 #endif
 #ifdef __BIG_ENDIAN
 #error "not running on big endian machines now"
 #endif
 	strcpy(tmp, NETjet_U_revision);
 	printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp));
 	if (cs->typ != ISDN_CTYPE_NETJET_U)
 		return(0);
 	test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);

 #ifdef CONFIG_PCI

 	for ( ;; )
 	{
 		if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
 			PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
 			if (pci_enable_device(dev_netjet))
 				return(0);
 			pci_set_master(dev_netjet);
 			cs->irq = dev_netjet->irq;
 			if (!cs->irq) {
 				printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n");
 				return(0);
 			}
 			cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
 			if (!cs->hw.njet.base) {
 				printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n");
 				return(0);
 			}
 		} else {
 			printk(KERN_WARNING "NETspider-U: No PCI card found\n");
 			return(0);
 		}

 		cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
 		cs->hw.njet.isac = cs->hw.njet.base | NETJET_ISAC_OFF;
 		mdelay(10);

 		cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
 		byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 		mdelay(10);

 		cs->hw.njet.ctrl_reg = 0x00;  /* Reset Off and status read clear */
 		byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
 		mdelay(10);

 		cs->hw.njet.auxd = 0xC0;
 		cs->hw.njet.dmactrl = 0;

 		byteout(cs->hw.njet.auxa, 0);
 		byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
 		byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
 		byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);

 		switch ( ( ( NETjet_ReadIC( cs, ICC_RBCH ) >> 5 ) & 3 ) )
 		{
 			case 3 :
 				break;

 			case 0 :
 				printk( KERN_WARNING "NETspider-U: NETjet-S PCI card found\n" );
 				continue;

 			default :
 				printk( KERN_WARNING "NETspider-U: No PCI card found\n" );
 				return 0;
                 }
                 break;
 	}
 #else

 	printk(KERN_WARNING "NETspider-U: NO_PCI_BIOS\n");
 	printk(KERN_WARNING "NETspider-U: unable to config NETspider-U PCI\n");
 	return (0);

 #endif /* CONFIG_PCI */

 	bytecnt = 256;

 	printk(KERN_INFO
 		"NETspider-U: PCI card configured at %#lx IRQ %d\n",
 		cs->hw.njet.base, cs->irq);
 	if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) {
 		printk(KERN_WARNING
 		       "HiSax: %s config port %#lx-%#lx already in use\n",
 		       CardType[card->typ],
 		       cs->hw.njet.base,
 		       cs->hw.njet.base + bytecnt);
 		return (0);
 	}
 	setup_icc(cs);
 	cs->readisac  = &NETjet_ReadIC;
 	cs->writeisac = &NETjet_WriteIC;
 	cs->readisacfifo  = &NETjet_ReadICfifo;
 	cs->writeisacfifo = &NETjet_WriteICfifo;
 	cs->BC_Read_Reg  = &dummyrr;
 	cs->BC_Write_Reg = &dummywr;
 	cs->BC_Send_Data = &netjet_fill_dma;
 	cs->cardmsg = &NETjet_U_card_msg;
 	cs->irq_func = &netjet_u_interrupt;
 	cs->irq_flags |= SA_SHIRQ;
 	ICCVersion(cs, "NETspider-U:");
 	return (1);
 }
	/* $Id: nj_u.c,v 2.14.2.3 2004/01/13 14:31:26 keil Exp $
	*
	* This software may be used and distributed according to the terms
	* of the GNU General Public License, incorporated herein by reference.
	*
	*/

	#include <linux/config.h>
	#include <linux/init.h>
	#include "hisax.h"
	#include "icc.h"
	#include "isdnl1.h"
	#include <linux/pci.h>
	#include <linux/interrupt.h>
	#include <linux/ppp_defs.h>
	#include "netjet.h"

	const char *NETjet_U_revision = "$Revision: 2.14.2.3 $";

	static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off)
	{
	return(5);
	}

	static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value)
	{
	}

	static irqreturn_t
	netjet_u_interrupt(int intno, void dev_id, struct pt_regs regs)
	{
	struct IsdnCardState *cs = dev_id;
	u_char val, sval;
	u_long flags;

	spin_lock_irqsave(&cs->lock, flags);
	if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
	NETJET_ISACIRQ)) {
	val = NETjet_ReadIC(cs, ICC_ISTA);
	if (cs->debug & L1_DEB_ISAC)
	debugl1(cs, "tiger: i1 %x %x", sval, val);
	if (val) {
	icc_interrupt(cs, val);
	NETjet_WriteIC(cs, ICC_MASK, 0xFF);
	NETjet_WriteIC(cs, ICC_MASK, 0x0);
	}
	}
	/* start new code 13/07/00 GE */
	/* set bits in sval to indicate which page is free */
	if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
	inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
	/* the 2nd write page is free */
	sval = 0x08;
	else /* the 1st write page is free */
	sval = 0x04;
	if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
	inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
	/* the 2nd read page is free */
	sval = sval \| 0x02;
	else /* the 1st read page is free */
	sval = sval \| 0x01;
	if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
	{
	if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
	spin_unlock_irqrestore(&cs->lock, flags);
	return IRQ_HANDLED;
	}
	cs->hw.njet.irqstat0 = sval;
	if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
	(cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
	/* we have a read dma int */
	read_tiger(cs);
	if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
	(cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
	/* we have a write dma int */
	write_tiger(cs);
	/* end new code 13/07/00 GE */
	test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
	}
	spin_unlock_irqrestore(&cs->lock, flags);
	return IRQ_HANDLED;
	}

	static void
	reset_netjet_u(struct IsdnCardState *cs)
	{
	cs->hw.njet.ctrl_reg = 0xff; /* Reset On */
	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
	mdelay(10);
	cs->hw.njet.ctrl_reg = 0x40; /* Reset Off and status read clear */
	/* now edge triggered for TJ320 GE 13/07/00 */
	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
	mdelay(10);
	cs->hw.njet.auxd = 0xC0;
	cs->hw.njet.dmactrl = 0;
	byteout(cs->hw.njet.auxa, 0);
	byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
	byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
	}

	static int
	NETjet_U_card_msg(struct IsdnCardState cs, int mt, void arg)
	{
	u_long flags;

	switch (mt) {
	case CARD_RESET:
	spin_lock_irqsave(&cs->lock, flags);
	reset_netjet_u(cs);
	spin_unlock_irqrestore(&cs->lock, flags);
	return(0);
	case CARD_RELEASE:
	release_io_netjet(cs);
	return(0);
	case CARD_INIT:
	spin_lock_irqsave(&cs->lock, flags);
	inittiger(cs);
	reset_netjet_u(cs);
	clear_pending_icc_ints(cs);
	initicc(cs);
	/* Reenable all IRQ */
	cs->writeisac(cs, ICC_MASK, 0);
	spin_unlock_irqrestore(&cs->lock, flags);
	return(0);
	case CARD_TEST:
	return(0);
	}
	return(0);
	}

	static struct pci_dev *dev_netjet __initdata = NULL;

	int __init
	setup_netjet_u(struct IsdnCard *card)
	{
	int bytecnt;
	struct IsdnCardState *cs = card->cs;
	char tmp[64];
	#ifdef CONFIG_PCI
	#endif
	#ifdef __BIG_ENDIAN
	#error "not running on big endian machines now"
	#endif
	strcpy(tmp, NETjet_U_revision);
	printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp));
	if (cs->typ != ISDN_CTYPE_NETJET_U)
	return(0);
	test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);

	#ifdef CONFIG_PCI

	for ( ;; )
	{
	if ((dev_netjet = pci_find_device(PCI_VENDOR_ID_TIGERJET,
	PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) {
	if (pci_enable_device(dev_netjet))
	return(0);
	pci_set_master(dev_netjet);
	cs->irq = dev_netjet->irq;
	if (!cs->irq) {
	printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n");
	return(0);
	}
	cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
	if (!cs->hw.njet.base) {
	printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n");
	return(0);
	}
	} else {
	printk(KERN_WARNING "NETspider-U: No PCI card found\n");
	return(0);
	}

	cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
	cs->hw.njet.isac = cs->hw.njet.base \| NETJET_ISAC_OFF;
	mdelay(10);

	cs->hw.njet.ctrl_reg = 0xff; /* Reset On */
	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
	mdelay(10);

	cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */
	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
	mdelay(10);

	cs->hw.njet.auxd = 0xC0;
	cs->hw.njet.dmactrl = 0;

	byteout(cs->hw.njet.auxa, 0);
	byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
	byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);

	switch ( ( ( NETjet_ReadIC( cs, ICC_RBCH ) >> 5 ) & 3 ) )
	{
	case 3 :
	break;

	case 0 :
	printk( KERN_WARNING "NETspider-U: NETjet-S PCI card found\n" );
	continue;

	default :
	printk( KERN_WARNING "NETspider-U: No PCI card found\n" );
	return 0;
	}
	break;
	}
	#else

	printk(KERN_WARNING "NETspider-U: NO_PCI_BIOS\n");
	printk(KERN_WARNING "NETspider-U: unable to config NETspider-U PCI\n");
	return (0);

	#endif /* CONFIG_PCI */

	bytecnt = 256;

	printk(KERN_INFO
	"NETspider-U: PCI card configured at %#lx IRQ %d\n",
	cs->hw.njet.base, cs->irq);
	if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) {
	printk(KERN_WARNING
	"HiSax: %s config port %#lx-%#lx already in use\n",
	CardType[card->typ],
	cs->hw.njet.base,
	cs->hw.njet.base + bytecnt);
	return (0);
	}
	setup_icc(cs);
	cs->readisac = &NETjet_ReadIC;
	cs->writeisac = &NETjet_WriteIC;
	cs->readisacfifo = &NETjet_ReadICfifo;
	cs->writeisacfifo = &NETjet_WriteICfifo;
	cs->BC_Read_Reg = &dummyrr;
	cs->BC_Write_Reg = &dummywr;
	cs->BC_Send_Data = &netjet_fill_dma;
	cs->cardmsg = &NETjet_U_card_msg;
	cs->irq_func = &netjet_u_interrupt;
	cs->irq_flags \|= SA_SHIRQ;
	ICCVersion(cs, "NETspider-U:");
	return (1);
	}