patch-2.2.19 linux/drivers/isdn/hisax/nj_u.c

• Lines: 274
• Date: Sun Mar 25 11:37:33 2001
• Orig file: v2.2.18/drivers/isdn/hisax/nj_u.c
• Orig date: Wed Dec 31 19:00:00 1969

diff -u --new-file --recursive --exclude-from /usr/src/exclude v2.2.18/drivers/isdn/hisax/nj_u.c linux/drivers/isdn/hisax/nj_u.c
@@ -0,0 +1,273 @@
+/* $Id: nj_u.c,v 2.8.6.3 2001/02/13 10:33:58 kai Exp $ 
+ *
+ * This file is (c) under GNU PUBLIC LICENSE
+ *
+ */
+
+#define __NO_VERSION__
+#include <linux/config.h>
+#include <linux/init.h>
+#include "hisax.h"
+#include "icc.h"
+#include "isdnl1.h"
+#include <linux/pci.h>
+#include <linux/isdn_compat.h>
+#include <linux/interrupt.h>
+#include <linux/ppp_defs.h>
+#include "netjet.h"
+
+const char *NETjet_U_revision = "$Revision: 2.8.6.3 $";
+
+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 void
+netjet_u_interrupt(int intno, void *dev_id, struct pt_regs *regs)
+{
+	struct IsdnCardState *cs = dev_id;
+	u_char val, sval;
+	long flags;
+
+	if (!cs) {
+		printk(KERN_WARNING "NETspider-U: Spurious interrupt!\n");
+		return;
+	}
+	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);
+		}
+	}
+	save_flags(flags);
+	cli();
+	/* 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)) {
+			restore_flags(flags);
+			return;
+		}
+		cs->hw.njet.irqstat0 = sval;
+		restore_flags(flags);
+		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);
+	} else
+		restore_flags(flags);
+
+/*	if (!testcnt--) {
+		cs->hw.njet.dmactrl = 0;
+		byteout(cs->hw.njet.base + NETJET_DMACTRL,
+			cs->hw.njet.dmactrl);
+		byteout(cs->hw.njet.base + NETJET_IRQMASK0, 0);
+	}
+*/
+}
+
+static void
+reset_netjet_u(struct IsdnCardState *cs)
+{
+	long flags;
+
+	save_flags(flags);
+	sti();
+	cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
+	byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	schedule_timeout((10*HZ)/1000);	/* Timeout 10ms */
+	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);
+	set_current_state(TASK_UNINTERRUPTIBLE);
+	schedule_timeout((10*HZ)/1000);	/* Timeout 10ms */
+	restore_flags(flags);
+	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)
+{
+	switch (mt) {
+		case CARD_RESET:
+			reset_netjet_u(cs);
+			return(0);
+		case CARD_RELEASE:
+			release_io_netjet(cs);
+			return(0);
+		case CARD_INIT:
+			inittiger(cs);
+			clear_pending_icc_ints(cs);
+			initicc(cs);
+			/* Reenable all IRQ */
+			cs->writeisac(cs, ICC_MASK, 0);
+			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];
+	long flags;
+#if 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);
+
+#if CONFIG_PCI
+
+	for ( ;; )
+	{
+		if (!pci_present()) {
+			printk(KERN_ERR "Netjet: no PCI bus present\n");
+			return(0);
+		}
+		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 = dev_netjet->base_address[ 0] & PCI_BASE_ADDRESS_IO_MASK;
+			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;
+
+		save_flags(flags);
+		sti();
+
+		cs->hw.njet.ctrl_reg = 0xff;  /* Reset On */
+		byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
+
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout((10*HZ)/1000);	/* Timeout 10ms */
+
+		cs->hw.njet.ctrl_reg = 0x00;  /* Reset Off and status read clear */
+		byteout(cs->hw.njet.base + NETJET_CTRL, cs->hw.njet.ctrl_reg);
+
+		set_current_state(TASK_UNINTERRUPTIBLE);
+		schedule_timeout((10*HZ)/1000);	/* Timeout 10ms */
+
+		restore_flags(flags);
+
+		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 0x%x IRQ %d\n",
+		cs->hw.njet.base, cs->irq);
+	if (check_region(cs->hw.njet.base, bytecnt)) {
+		printk(KERN_WARNING
+		       "HiSax: %s config port %x-%x already in use\n",
+		       CardType[card->typ],
+		       cs->hw.njet.base,
+		       cs->hw.njet.base + bytecnt);
+		return (0);
+	} else {
+		request_region(cs->hw.njet.base, bytecnt, "netspider-u isdn");
+	}
+	reset_netjet_u(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);
+}