Initial import

1 files changed, 258 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/nj_u.c b/drivers/isdn/hisax/nj_u.c
new file mode 100644
index 000000000..4e8adbede
--- /dev/null
+++ b/drivers/isdn/hisax/nj_u.c
@@ -0,0 +1,258 @@
+/* $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 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 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 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 = NULL;
+
+int 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);
+}