[deliverable/linux.git] / drivers / isdn / hisax / nj_u.c

/* $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/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"

static 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 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 int __devinit nju_pci_probe(struct pci_dev *dev_netjet,
				   struct IsdnCardState *cs)
{
	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);
	}

	return (1);
}

static int __devinit nju_cs_init(struct IsdnCard *card,
				 struct IsdnCardState *cs)
{
	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:
		return 1;	/* end loop */

	case 0:
		printk(KERN_WARNING "NETspider-U: NETjet-S PCI card found\n");
		return -1;	/* continue looping */

	default:
		printk(KERN_WARNING "NETspider-U: No PCI card found\n");
		return 0;	/* end loop & function */
	}
	return 1;			/* end loop */
}

static int __devinit nju_cs_init_rest(struct IsdnCard *card,
				      struct IsdnCardState *cs)
{
	const int 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: NETspider-U config port %#lx-%#lx "
		       "already in use\n",
		       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 |= IRQF_SHARED;
	ICCVersion(cs, "NETspider-U:");

	return (1);
}

static struct pci_dev *dev_netjet __devinitdata = NULL;

int __devinit
setup_netjet_u(struct IsdnCard *card)
{
	int ret;
	struct IsdnCardState *cs = card->cs;
	char tmp[64];

#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);

	for (;;)
	{
		if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
							PCI_DEVICE_ID_TIGERJET_300,  dev_netjet))) {
			ret = nju_pci_probe(dev_netjet, cs);
			if (!ret)
				return (0);
		} else {
			printk(KERN_WARNING "NETspider-U: No PCI card found\n");
			return (0);
		}

		ret = nju_cs_init(card, cs);
		if (!ret)
			return (0);
		if (ret > 0)
			break;
		/* ret < 0 == continue looping */
	}

	return nju_cs_init_rest(card, cs);
}
Commit	Line	Data
475be4d8	1	/* $Id: nj_u.c,v 2.14.2.3 2004/01/13 14:31:26 keil Exp $
1da177e4 LT	2	*
	3	* This software may be used and distributed according to the terms
	4	* of the GNU General Public License, incorporated herein by reference.
	5	*
	6	*/
	7
1da177e4 LT	8	#include <linux/init.h>
	9	#include "hisax.h"
	10	#include "icc.h"
	11	#include "isdnl1.h"
	12	#include <linux/pci.h>
	13	#include <linux/interrupt.h>
	14	#include <linux/ppp_defs.h>
	15	#include "netjet.h"
	16
672c3fd9	17	static const char *NETjet_U_revision = "$Revision: 2.14.2.3 $";
1da177e4 LT	18
	19	static u_char dummyrr(struct IsdnCardState *cs, int chan, u_char off)
	20	{
475be4d8	21	return (5);
1da177e4 LT	22	}
	23
	24	static void dummywr(struct IsdnCardState *cs, int chan, u_char off, u_char value)
	25	{
	26	}
	27
	28	static irqreturn_t
7d12e780	29	netjet_u_interrupt(int intno, void *dev_id)
1da177e4 LT	30	{
	31	struct IsdnCardState *cs = dev_id;
	32	u_char val, sval;
	33	u_long flags;
	34
	35	spin_lock_irqsave(&cs->lock, flags);
	36	if (!((sval = bytein(cs->hw.njet.base + NETJET_IRQSTAT1)) &
475be4d8	37	NETJET_ISACIRQ)) {
1da177e4 LT	38	val = NETjet_ReadIC(cs, ICC_ISTA);
	39	if (cs->debug & L1_DEB_ISAC)
	40	debugl1(cs, "tiger: i1 %x %x", sval, val);
	41	if (val) {
	42	icc_interrupt(cs, val);
	43	NETjet_WriteIC(cs, ICC_MASK, 0xFF);
	44	NETjet_WriteIC(cs, ICC_MASK, 0x0);
	45	}
	46	}
	47	/* start new code 13/07/00 GE */
	48	/* set bits in sval to indicate which page is free */
	49	if (inl(cs->hw.njet.base + NETJET_DMA_WRITE_ADR) <
475be4d8	50	inl(cs->hw.njet.base + NETJET_DMA_WRITE_IRQ))
1da177e4 LT	51	/* the 2nd write page is free */
	52	sval = 0x08;
	53	else /* the 1st write page is free */
475be4d8	54	sval = 0x04;
1da177e4	55	if (inl(cs->hw.njet.base + NETJET_DMA_READ_ADR) <
475be4d8	56	inl(cs->hw.njet.base + NETJET_DMA_READ_IRQ))
1da177e4 LT	57	/* the 2nd read page is free */
	58	sval = sval \| 0x02;
	59	else /* the 1st read page is free */
475be4d8	60	sval = sval \| 0x01;
1da177e4 LT	61	if (sval != cs->hw.njet.last_is0) /* we have a DMA interrupt */
	62	{
	63	if (test_and_set_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags)) {
	64	spin_unlock_irqrestore(&cs->lock, flags);
	65	return IRQ_HANDLED;
	66	}
	67	cs->hw.njet.irqstat0 = sval;
475be4d8 JP	68	if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_READ) !=
475be4d8 JP	69	(cs->hw.njet.last_is0 & NETJET_IRQM0_READ))
1da177e4 LT	70	/* we have a read dma int */
	71	read_tiger(cs);
	72	if ((cs->hw.njet.irqstat0 & NETJET_IRQM0_WRITE) !=
475be4d8	73	(cs->hw.njet.last_is0 & NETJET_IRQM0_WRITE))
1da177e4 LT	74	/* we have a write dma int */
	75	write_tiger(cs);
	76	/* end new code 13/07/00 GE */
	77	test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
	78	}
	79	spin_unlock_irqrestore(&cs->lock, flags);
	80	return IRQ_HANDLED;
	81	}
	82
	83	static void
	84	reset_netjet_u(struct IsdnCardState *cs)
	85	{
	86	cs->hw.njet.ctrl_reg = 0xff; /* Reset On */
	87	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
	88	mdelay(10);
	89	cs->hw.njet.ctrl_reg = 0x40; /* Reset Off and status read clear */
	90	/* now edge triggered for TJ320 GE 13/07/00 */
	91	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
	92	mdelay(10);
	93	cs->hw.njet.auxd = 0xC0;
	94	cs->hw.njet.dmactrl = 0;
	95	byteout(cs->hw.njet.auxa, 0);
	96	byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
	97	byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
	98	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
	99	}
	100
	101	static int
	102	NETjet_U_card_msg(struct IsdnCardState cs, int mt, void arg)
	103	{
	104	u_long flags;
	105
	106	switch (mt) {
475be4d8 JP	107	case CARD_RESET:
	108	spin_lock_irqsave(&cs->lock, flags);
	109	reset_netjet_u(cs);
	110	spin_unlock_irqrestore(&cs->lock, flags);
	111	return (0);
	112	case CARD_RELEASE:
	113	release_io_netjet(cs);
	114	return (0);
	115	case CARD_INIT:
	116	spin_lock_irqsave(&cs->lock, flags);
	117	inittiger(cs);
	118	reset_netjet_u(cs);
	119	clear_pending_icc_ints(cs);
	120	initicc(cs);
	121	/* Reenable all IRQ */
	122	cs->writeisac(cs, ICC_MASK, 0);
	123	spin_unlock_irqrestore(&cs->lock, flags);
	124	return (0);
	125	case CARD_TEST:
	126	return (0);
1da177e4	127	}
475be4d8	128	return (0);
1da177e4 LT	129	}
1da177e4 LT	130
7c60e1ca JG	131	static int __devinit nju_pci_probe(struct pci_dev *dev_netjet,
7c60e1ca JG	132	struct IsdnCardState *cs)
1da177e4	133	{
7c60e1ca	134	if (pci_enable_device(dev_netjet))
475be4d8	135	return (0);
7c60e1ca JG	136	pci_set_master(dev_netjet);
	137	cs->irq = dev_netjet->irq;
	138	if (!cs->irq) {
	139	printk(KERN_WARNING "NETspider-U: No IRQ for PCI card found\n");
475be4d8	140	return (0);
7c60e1ca JG	141	}
	142	cs->hw.njet.base = pci_resource_start(dev_netjet, 0);
	143	if (!cs->hw.njet.base) {
	144	printk(KERN_WARNING "NETspider-U: No IO-Adr for PCI card found\n");
475be4d8	145	return (0);
7c60e1ca	146	}
1da177e4	147
7c60e1ca JG	148	return (1);
7c60e1ca JG	149	}
1da177e4	150
7c60e1ca JG	151	static int __devinit nju_cs_init(struct IsdnCard *card,
	152	struct IsdnCardState *cs)
	153	{
	154	cs->hw.njet.auxa = cs->hw.njet.base + NETJET_AUXDATA;
	155	cs->hw.njet.isac = cs->hw.njet.base \| NETJET_ISAC_OFF;
	156	mdelay(10);
1da177e4	157
7c60e1ca JG	158	cs->hw.njet.ctrl_reg = 0xff; /* Reset On */
	159	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
	160	mdelay(10);
1da177e4	161
7c60e1ca JG	162	cs->hw.njet.ctrl_reg = 0x00; /* Reset Off and status read clear */
	163	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
	164	mdelay(10);
1da177e4	165
7c60e1ca JG	166	cs->hw.njet.auxd = 0xC0;
7c60e1ca JG	167	cs->hw.njet.dmactrl = 0;
1da177e4	168
7c60e1ca JG	169	byteout(cs->hw.njet.auxa, 0);
	170	byteout(cs->hw.njet.base + NETJET_AUXCTRL, ~NETJET_ISACIRQ);
	171	byteout(cs->hw.njet.base + NETJET_IRQMASK1, NETJET_ISACIRQ);
	172	byteout(cs->hw.njet.auxa, cs->hw.njet.auxd);
1da177e4	173
475be4d8	174	switch (((NETjet_ReadIC(cs, ICC_RBCH) >> 5) & 3))
7c60e1ca	175	{
475be4d8 JP	176	case 3:
475be4d8 JP	177	return 1; /* end loop */
1da177e4	178
475be4d8 JP	179	case 0:
	180	printk(KERN_WARNING "NETspider-U: NETjet-S PCI card found\n");
	181	return -1; /* continue looping */
1da177e4	182
475be4d8 JP	183	default:
	184	printk(KERN_WARNING "NETspider-U: No PCI card found\n");
	185	return 0; /* end loop & function */
1da177e4	186	}
7c60e1ca JG	187	return 1; /* end loop */
7c60e1ca JG	188	}
1da177e4	189
7c60e1ca JG	190	static int __devinit nju_cs_init_rest(struct IsdnCard *card,
	191	struct IsdnCardState *cs)
	192	{
	193	const int bytecnt = 256;
1da177e4 LT	194
1da177e4 LT	195	printk(KERN_INFO
475be4d8 JP	196	"NETspider-U: PCI card configured at %#lx IRQ %d\n",
475be4d8 JP	197	cs->hw.njet.base, cs->irq);
1da177e4 LT	198	if (!request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn")) {
1da177e4 LT	199	printk(KERN_WARNING
8349304d JG	200	"HiSax: NETspider-U config port %#lx-%#lx "
8349304d JG	201	"already in use\n",
1da177e4 LT	202	cs->hw.njet.base,
	203	cs->hw.njet.base + bytecnt);
	204	return (0);
	205	}
	206	setup_icc(cs);
	207	cs->readisac = &NETjet_ReadIC;
	208	cs->writeisac = &NETjet_WriteIC;
	209	cs->readisacfifo = &NETjet_ReadICfifo;
	210	cs->writeisacfifo = &NETjet_WriteICfifo;
	211	cs->BC_Read_Reg = &dummyrr;
	212	cs->BC_Write_Reg = &dummywr;
	213	cs->BC_Send_Data = &netjet_fill_dma;
	214	cs->cardmsg = &NETjet_U_card_msg;
	215	cs->irq_func = &netjet_u_interrupt;
9ba02bec	216	cs->irq_flags \|= IRQF_SHARED;
1da177e4	217	ICCVersion(cs, "NETspider-U:");
7c60e1ca	218
1da177e4 LT	219	return (1);
1da177e4 LT	220	}
7c60e1ca JG	221
	222	static struct pci_dev *dev_netjet __devinitdata = NULL;
	223
	224	int __devinit
	225	setup_netjet_u(struct IsdnCard *card)
	226	{
	227	int ret;
	228	struct IsdnCardState *cs = card->cs;
	229	char tmp[64];
	230
	231	#ifdef __BIG_ENDIAN
	232	#error "not running on big endian machines now"
	233	#endif
	234
	235	strcpy(tmp, NETjet_U_revision);
	236	printk(KERN_INFO "HiSax: Traverse Tech. NETspider-U driver Rev. %s\n", HiSax_getrev(tmp));
	237	if (cs->typ != ISDN_CTYPE_NETJET_U)
475be4d8	238	return (0);
7c60e1ca JG	239	test_and_clear_bit(FLG_LOCK_ATOMIC, &cs->HW_Flags);
7c60e1ca JG	240
475be4d8	241	for (;;)
7c60e1ca	242	{
41a68a74	243	if ((dev_netjet = hisax_find_pci_device(PCI_VENDOR_ID_TIGERJET,
475be4d8	244	PCI_DEVICE_ID_TIGERJET_300, dev_netjet))) {
7c60e1ca JG	245	ret = nju_pci_probe(dev_netjet, cs);
7c60e1ca JG	246	if (!ret)
475be4d8	247	return (0);
7c60e1ca JG	248	} else {
7c60e1ca JG	249	printk(KERN_WARNING "NETspider-U: No PCI card found\n");
475be4d8	250	return (0);
7c60e1ca JG	251	}
	252
	253	ret = nju_cs_init(card, cs);
	254	if (!ret)
	255	return (0);
	256	if (ret > 0)
	257	break;
	258	/* ret < 0 == continue looping */
	259	}
	260
	261	return nju_cs_init_rest(card, cs);
	262	}