Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 1028 insertions, 0 deletions

diff --git a/drivers/isdn/hisax/hisax_fcpcipnp.c b/drivers/isdn/hisax/hisax_fcpcipnp.c
new file mode 100644
index 00000000000..b4d795d4015
--- /dev/null
+++ b/drivers/isdn/hisax/hisax_fcpcipnp.c
@@ -0,0 +1,1028 @@
+/*
+ * Driver for AVM Fritz!PCI, Fritz!PCI v2, Fritz!PnP ISDN cards
+ *
+ * Author       Kai Germaschewski
+ * Copyright    2001 by Kai Germaschewski  <kai.germaschewski@gmx.de>
+ *              2001 by Karsten Keil       <keil@isdn4linux.de>
+ * 
+ * based upon Karsten Keil's original avm_pci.c driver
+ *
+ * This software may be used and distributed according to the terms
+ * of the GNU General Public License, incorporated herein by reference.
+ *
+ * Thanks to Wizard Computersysteme GmbH, Bremervoerde and
+ *           SoHaNet Technology GmbH, Berlin
+ * for supporting the development of this driver
+ */
+
+
+/* TODO:
+ *
+ * o POWER PC
+ * o clean up debugging
+ * o tx_skb at PH_DEACTIVATE time
+ */
+
+#include <linux/version.h>
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/pci.h>
+#include <linux/isapnp.h>
+#include <linux/kmod.h>
+#include <linux/slab.h>
+#include <linux/skbuff.h>
+#include <linux/netdevice.h>
+#include <linux/delay.h>
+
+#include <asm/io.h>
+
+#include "hisax_fcpcipnp.h"
+
+// debugging cruft
+#define __debug_variable debug
+#include "hisax_debug.h"
+
+#ifdef CONFIG_HISAX_DEBUG
+static int debug = 0;
+/* static int hdlcfifosize = 32; */
+module_param(debug, int, 0);
+/* module_param(hdlcfifosize, int, 0); */
+#endif
+
+MODULE_AUTHOR("Kai Germaschewski <kai.germaschewski@gmx.de>/Karsten Keil <kkeil@suse.de>");
+MODULE_DESCRIPTION("AVM Fritz!PCI/PnP ISDN driver");
+
+static struct pci_device_id fcpci_ids[] = {
+	{ .vendor      = PCI_VENDOR_ID_AVM,
+	  .device      = PCI_DEVICE_ID_AVM_A1,
+	  .subvendor   = PCI_ANY_ID,
+	  .subdevice   = PCI_ANY_ID,
+	  .driver_data = (unsigned long) "Fritz!Card PCI",
+	},
+	{ .vendor      = PCI_VENDOR_ID_AVM,
+	  .device      = PCI_DEVICE_ID_AVM_A1_V2,
+	  .subvendor   = PCI_ANY_ID,
+	  .subdevice   = PCI_ANY_ID,
+	  .driver_data = (unsigned long) "Fritz!Card PCI v2" },
+	{}
+};
+
+MODULE_DEVICE_TABLE(pci, fcpci_ids);
+
+#ifdef __ISAPNP__
+static struct pnp_device_id fcpnp_ids[] __devinitdata = {
+	{ 
+		.id		= "AVM0900",
+		.driver_data	= (unsigned long) "Fritz!Card PnP",
+	},
+};
+
+MODULE_DEVICE_TABLE(isapnp, fcpnp_ids);
+#endif
+
+static int protocol = 2;       /* EURO-ISDN Default */
+module_param(protocol, int, 0);
+MODULE_LICENSE("GPL");
+
+// ----------------------------------------------------------------------
+
+#define  AVM_INDEX              0x04
+#define  AVM_DATA               0x10
+
+#define	 AVM_IDX_HDLC_1		0x00
+#define	 AVM_IDX_HDLC_2		0x01
+#define	 AVM_IDX_ISAC_FIFO	0x02
+#define	 AVM_IDX_ISAC_REG_LOW	0x04
+#define	 AVM_IDX_ISAC_REG_HIGH	0x06
+
+#define  AVM_STATUS0            0x02
+
+#define  AVM_STATUS0_IRQ_ISAC	0x01
+#define  AVM_STATUS0_IRQ_HDLC	0x02
+#define  AVM_STATUS0_IRQ_TIMER	0x04
+#define  AVM_STATUS0_IRQ_MASK	0x07
+
+#define  AVM_STATUS0_RESET	0x01
+#define  AVM_STATUS0_DIS_TIMER	0x02
+#define  AVM_STATUS0_RES_TIMER	0x04
+#define  AVM_STATUS0_ENA_IRQ	0x08
+#define  AVM_STATUS0_TESTBIT	0x10
+
+#define  AVM_STATUS1            0x03
+#define  AVM_STATUS1_ENA_IOM	0x80
+
+#define  HDLC_FIFO		0x0
+#define  HDLC_STATUS		0x4
+#define  HDLC_CTRL		0x4
+
+#define  HDLC_MODE_ITF_FLG	0x01
+#define  HDLC_MODE_TRANS	0x02
+#define  HDLC_MODE_CCR_7	0x04
+#define  HDLC_MODE_CCR_16	0x08
+#define  HDLC_MODE_TESTLOOP	0x80
+
+#define  HDLC_INT_XPR		0x80
+#define  HDLC_INT_XDU		0x40
+#define  HDLC_INT_RPR		0x20
+#define  HDLC_INT_MASK		0xE0
+
+#define  HDLC_STAT_RME		0x01
+#define  HDLC_STAT_RDO		0x10
+#define  HDLC_STAT_CRCVFRRAB	0x0E
+#define  HDLC_STAT_CRCVFR	0x06
+#define  HDLC_STAT_RML_MASK	0xff00
+
+#define  HDLC_CMD_XRS		0x80
+#define  HDLC_CMD_XME		0x01
+#define  HDLC_CMD_RRS		0x20
+#define  HDLC_CMD_XML_MASK	0xff00
+
+#define  AVM_HDLC_FIFO_1        0x10
+#define  AVM_HDLC_FIFO_2        0x18
+
+#define  AVM_HDLC_STATUS_1      0x14
+#define  AVM_HDLC_STATUS_2      0x1c
+
+#define  AVM_ISACSX_INDEX       0x04
+#define  AVM_ISACSX_DATA        0x08
+
+// ----------------------------------------------------------------------
+// Fritz!PCI
+
+static unsigned char fcpci_read_isac(struct isac *isac, unsigned char offset)
+{
+	struct fritz_adapter *adapter = isac->priv;
+	unsigned char idx = (offset > 0x2f) ? 
+		AVM_IDX_ISAC_REG_HIGH : AVM_IDX_ISAC_REG_LOW;
+	unsigned char val;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outb(idx, adapter->io + AVM_INDEX);
+	val = inb(adapter->io + AVM_DATA + (offset & 0xf));
+ 	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+	DBG(0x1000, " port %#x, value %#x",
+	    offset, val);
+	return val;
+}
+
+static void fcpci_write_isac(struct isac *isac, unsigned char offset,
+			     unsigned char value)
+{
+	struct fritz_adapter *adapter = isac->priv;
+	unsigned char idx = (offset > 0x2f) ? 
+		AVM_IDX_ISAC_REG_HIGH : AVM_IDX_ISAC_REG_LOW;
+	unsigned long flags;
+
+	DBG(0x1000, " port %#x, value %#x",
+	    offset, value);
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outb(idx, adapter->io + AVM_INDEX);
+	outb(value, adapter->io + AVM_DATA + (offset & 0xf));
+ 	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+}
+
+static void fcpci_read_isac_fifo(struct isac *isac, unsigned char * data, 
+				 int size)
+{
+	struct fritz_adapter *adapter = isac->priv;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outb(AVM_IDX_ISAC_FIFO, adapter->io + AVM_INDEX);
+	insb(adapter->io + AVM_DATA, data, size);
+ 	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+}
+
+static void fcpci_write_isac_fifo(struct isac *isac, unsigned char * data, 
+				  int size)
+{
+	struct fritz_adapter *adapter = isac->priv;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outb(AVM_IDX_ISAC_FIFO, adapter->io + AVM_INDEX);
+	outsb(adapter->io + AVM_DATA, data, size);
+ 	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+}
+
+static u32 fcpci_read_hdlc_status(struct fritz_adapter *adapter, int nr)
+{
+	u32 val;
+	int idx = nr ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outl(idx, adapter->io + AVM_INDEX);
+	val = inl(adapter->io + AVM_DATA + HDLC_STATUS);
+	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+	return val;
+}
+
+static void __fcpci_write_ctrl(struct fritz_bcs *bcs, int which)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	int idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
+
+	DBG(0x40, "hdlc %c wr%x ctrl %x",
+	    'A' + bcs->channel, which, bcs->ctrl.ctrl);
+
+	outl(idx, adapter->io + AVM_INDEX);
+	outl(bcs->ctrl.ctrl, adapter->io + AVM_DATA + HDLC_CTRL);
+}
+
+static void fcpci_write_ctrl(struct fritz_bcs *bcs, int which)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	__fcpci_write_ctrl(bcs, which);
+	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+}
+
+// ----------------------------------------------------------------------
+// Fritz!PCI v2
+
+static unsigned char fcpci2_read_isac(struct isac *isac, unsigned char offset)
+{
+	struct fritz_adapter *adapter = isac->priv;
+	unsigned char val;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outl(offset, adapter->io + AVM_ISACSX_INDEX);
+	val = inl(adapter->io + AVM_ISACSX_DATA);
+ 	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+	DBG(0x1000, " port %#x, value %#x",
+	    offset, val);
+
+	return val;
+}
+
+static void fcpci2_write_isac(struct isac *isac, unsigned char offset, 
+			      unsigned char value)
+{
+	struct fritz_adapter *adapter = isac->priv;
+	unsigned long flags;
+
+	DBG(0x1000, " port %#x, value %#x",
+	    offset, value);
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outl(offset, adapter->io + AVM_ISACSX_INDEX);
+	outl(value, adapter->io + AVM_ISACSX_DATA);
+ 	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+}
+
+static void fcpci2_read_isac_fifo(struct isac *isac, unsigned char * data, 
+				  int size)
+{
+	struct fritz_adapter *adapter = isac->priv;
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outl(0, adapter->io + AVM_ISACSX_INDEX);
+	for (i = 0; i < size; i++)
+		data[i] = inl(adapter->io + AVM_ISACSX_DATA);
+ 	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+}
+
+static void fcpci2_write_isac_fifo(struct isac *isac, unsigned char * data, 
+				   int size)
+{
+	struct fritz_adapter *adapter = isac->priv;
+	int i;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outl(0, adapter->io + AVM_ISACSX_INDEX);
+	for (i = 0; i < size; i++)
+		outl(data[i], adapter->io + AVM_ISACSX_DATA);
+ 	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+}
+
+static u32 fcpci2_read_hdlc_status(struct fritz_adapter *adapter, int nr)
+{
+	int offset = nr ? AVM_HDLC_STATUS_2 : AVM_HDLC_STATUS_1;
+
+	return inl(adapter->io + offset);
+}
+
+static void fcpci2_write_ctrl(struct fritz_bcs *bcs, int which)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	int offset = bcs->channel ? AVM_HDLC_STATUS_2 : AVM_HDLC_STATUS_1;
+
+	DBG(0x40, "hdlc %c wr%x ctrl %x",
+	    'A' + bcs->channel, which, bcs->ctrl.ctrl);
+
+	outl(bcs->ctrl.ctrl, adapter->io + offset);
+}
+
+// ----------------------------------------------------------------------
+// Fritz!PnP (ISAC access as for Fritz!PCI)
+
+static u32 fcpnp_read_hdlc_status(struct fritz_adapter *adapter, int nr)
+{
+	unsigned char idx = nr ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
+	u32 val;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	outb(idx, adapter->io + AVM_INDEX);
+	val = inb(adapter->io + AVM_DATA + HDLC_STATUS);
+	if (val & HDLC_INT_RPR)
+		val |= inb(adapter->io + AVM_DATA + HDLC_STATUS + 1) << 8;
+	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+	return val;
+}
+
+static void __fcpnp_write_ctrl(struct fritz_bcs *bcs, int which)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	unsigned char idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
+
+	DBG(0x40, "hdlc %c wr%x ctrl %x",
+	    'A' + bcs->channel, which, bcs->ctrl.ctrl);
+
+	outb(idx, adapter->io + AVM_INDEX);
+	if (which & 4)
+		outb(bcs->ctrl.sr.mode, 
+		     adapter->io + AVM_DATA + HDLC_STATUS + 2);
+	if (which & 2)
+		outb(bcs->ctrl.sr.xml, 
+		     adapter->io + AVM_DATA + HDLC_STATUS + 1);
+	if (which & 1)
+		outb(bcs->ctrl.sr.cmd,
+		     adapter->io + AVM_DATA + HDLC_STATUS + 0);
+}
+
+static void fcpnp_write_ctrl(struct fritz_bcs *bcs, int which)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	unsigned long flags;
+
+	spin_lock_irqsave(&adapter->hw_lock, flags);
+	__fcpnp_write_ctrl(bcs, which);
+	spin_unlock_irqrestore(&adapter->hw_lock, flags);
+}
+
+// ----------------------------------------------------------------------
+
+static inline void B_L1L2(struct fritz_bcs *bcs, int pr, void *arg)
+{
+	struct hisax_if *ifc = (struct hisax_if *) &bcs->b_if;
+
+	DBG(2, "pr %#x", pr);
+	ifc->l1l2(ifc, pr, arg);
+}
+
+static void hdlc_fill_fifo(struct fritz_bcs *bcs)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	struct sk_buff *skb = bcs->tx_skb;
+	int count;
+	unsigned long flags;
+	unsigned char *p;
+
+	DBG(0x40, "hdlc_fill_fifo");
+
+	if (skb->len == 0)
+		BUG();
+
+	bcs->ctrl.sr.cmd &= ~HDLC_CMD_XME;
+	if (bcs->tx_skb->len > bcs->fifo_size) {
+		count = bcs->fifo_size;
+	} else {
+		count = bcs->tx_skb->len;
+		if (bcs->mode != L1_MODE_TRANS)
+			bcs->ctrl.sr.cmd |= HDLC_CMD_XME;
+	}
+	DBG(0x40, "hdlc_fill_fifo %d/%d", count, bcs->tx_skb->len);
+	p = bcs->tx_skb->data;
+	skb_pull(bcs->tx_skb, count);
+	bcs->tx_cnt += count;
+	bcs->ctrl.sr.xml = ((count == bcs->fifo_size) ? 0 : count);
+
+	switch (adapter->type) {
+	case AVM_FRITZ_PCI:
+		spin_lock_irqsave(&adapter->hw_lock, flags);
+		// sets the correct AVM_INDEX, too
+		__fcpci_write_ctrl(bcs, 3);
+		outsl(adapter->io + AVM_DATA + HDLC_FIFO,
+		      p, (count + 3) / 4);
+		spin_unlock_irqrestore(&adapter->hw_lock, flags);
+		break;
+	case AVM_FRITZ_PCIV2:
+		fcpci2_write_ctrl(bcs, 3);
+		outsl(adapter->io + 
+		      (bcs->channel ? AVM_HDLC_FIFO_2 : AVM_HDLC_FIFO_1),
+		      p, (count + 3) / 4);
+		break;
+	case AVM_FRITZ_PNP:
+		spin_lock_irqsave(&adapter->hw_lock, flags);
+		// sets the correct AVM_INDEX, too
+		__fcpnp_write_ctrl(bcs, 3);
+		outsb(adapter->io + AVM_DATA, p, count);
+		spin_unlock_irqrestore(&adapter->hw_lock, flags);
+		break;
+	}
+}
+
+static inline void hdlc_empty_fifo(struct fritz_bcs *bcs, int count)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	unsigned char *p;
+	unsigned char idx = bcs->channel ? AVM_IDX_HDLC_2 : AVM_IDX_HDLC_1;
+
+	DBG(0x10, "hdlc_empty_fifo %d", count);
+	if (bcs->rcvidx + count > HSCX_BUFMAX) {
+		DBG(0x10, "hdlc_empty_fifo: incoming packet too large");
+		return;
+	}
+	p = bcs->rcvbuf + bcs->rcvidx;
+	bcs->rcvidx += count;
+	switch (adapter->type) {
+	case AVM_FRITZ_PCI:
+		spin_lock(&adapter->hw_lock);
+		outl(idx, adapter->io + AVM_INDEX);
+		insl(adapter->io + AVM_DATA + HDLC_FIFO, 
+		     p, (count + 3) / 4);
+		spin_unlock(&adapter->hw_lock);
+		break;
+	case AVM_FRITZ_PCIV2:
+		insl(adapter->io + 
+		     (bcs->channel ? AVM_HDLC_FIFO_2 : AVM_HDLC_FIFO_1),
+		     p, (count + 3) / 4);
+		break;
+	case AVM_FRITZ_PNP:
+		spin_lock(&adapter->hw_lock);
+		outb(idx, adapter->io + AVM_INDEX);
+		insb(adapter->io + AVM_DATA, p, count);
+		spin_unlock(&adapter->hw_lock);
+		break;
+	}
+}
+
+static inline void hdlc_rpr_irq(struct fritz_bcs *bcs, u32 stat)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	struct sk_buff *skb;
+	int len;
+
+	if (stat & HDLC_STAT_RDO) {
+		DBG(0x10, "RDO");
+		bcs->ctrl.sr.xml = 0;
+		bcs->ctrl.sr.cmd |= HDLC_CMD_RRS;
+		adapter->write_ctrl(bcs, 1);
+		bcs->ctrl.sr.cmd &= ~HDLC_CMD_RRS;
+		adapter->write_ctrl(bcs, 1);
+		bcs->rcvidx = 0;
+		return;
+	}
+
+	len = (stat & HDLC_STAT_RML_MASK) >> 8;
+	if (len == 0)
+		len = bcs->fifo_size;
+
+	hdlc_empty_fifo(bcs, len);
+
+	if ((stat & HDLC_STAT_RME) || (bcs->mode == L1_MODE_TRANS)) {
+		if (((stat & HDLC_STAT_CRCVFRRAB)== HDLC_STAT_CRCVFR) ||
+		    (bcs->mode == L1_MODE_TRANS)) {
+			skb = dev_alloc_skb(bcs->rcvidx);
+			if (!skb) {
+				printk(KERN_WARNING "HDLC: receive out of memory\n");
+			} else {
+				memcpy(skb_put(skb, bcs->rcvidx), bcs->rcvbuf,
+				       bcs->rcvidx);
+				DBG_SKB(1, skb);
+				B_L1L2(bcs, PH_DATA | INDICATION, skb);
+			}
+			bcs->rcvidx = 0;
+		} else {
+			DBG(0x10, "ch%d invalid frame %#x",
+			    bcs->channel, stat);
+			bcs->rcvidx = 0;
+		}
+	}
+}
+
+static inline void hdlc_xdu_irq(struct fritz_bcs *bcs)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	
+
+	/* Here we lost an TX interrupt, so
+	 * restart transmitting the whole frame.
+	 */
+	bcs->ctrl.sr.xml = 0;
+	bcs->ctrl.sr.cmd |= HDLC_CMD_XRS;
+	adapter->write_ctrl(bcs, 1);
+	bcs->ctrl.sr.cmd &= ~HDLC_CMD_XRS;
+
+	if (!bcs->tx_skb) {
+		DBG(0x10, "XDU without skb");
+		adapter->write_ctrl(bcs, 1);
+		return;
+	}
+	/* only hdlc restarts the frame, transparent mode must continue */
+	if (bcs->mode == L1_MODE_HDLC) {
+		skb_push(bcs->tx_skb, bcs->tx_cnt);
+		bcs->tx_cnt = 0;
+	}
+}
+
+static inline void hdlc_xpr_irq(struct fritz_bcs *bcs)
+{
+	struct sk_buff *skb;
+
+	skb = bcs->tx_skb;
+	if (!skb)
+		return;
+
+	if (skb->len) {
+		hdlc_fill_fifo(bcs);
+		return;
+	}
+	bcs->tx_cnt = 0;
+	bcs->tx_skb = NULL;
+	B_L1L2(bcs, PH_DATA | CONFIRM, (void *) skb->truesize);
+	dev_kfree_skb_irq(skb);
+}
+
+static void hdlc_irq_one(struct fritz_bcs *bcs, u32 stat)
+{
+	DBG(0x10, "ch%d stat %#x", bcs->channel, stat);
+	if (stat & HDLC_INT_RPR) {
+		DBG(0x10, "RPR");
+		hdlc_rpr_irq(bcs, stat);
+	}
+	if (stat & HDLC_INT_XDU) {
+		DBG(0x10, "XDU");
+		hdlc_xdu_irq(bcs);
+		hdlc_xpr_irq(bcs);
+		return;
+	}
+	if (stat & HDLC_INT_XPR) {
+		DBG(0x10, "XPR");
+		hdlc_xpr_irq(bcs);
+	}
+}
+
+static inline void hdlc_irq(struct fritz_adapter *adapter)
+{
+	int nr;
+	u32 stat;
+
+	for (nr = 0; nr < 2; nr++) {
+		stat = adapter->read_hdlc_status(adapter, nr);
+		DBG(0x10, "HDLC %c stat %#x", 'A' + nr, stat);
+		if (stat & HDLC_INT_MASK)
+			hdlc_irq_one(&adapter->bcs[nr], stat);
+	}
+}
+
+static void modehdlc(struct fritz_bcs *bcs, int mode)
+{
+	struct fritz_adapter *adapter = bcs->adapter;
+	
+	DBG(0x40, "hdlc %c mode %d --> %d",
+	    'A' + bcs->channel, bcs->mode, mode);
+
+	if (bcs->mode == mode)
+		return;
+
+	bcs->fifo_size = 32;
+	bcs->ctrl.ctrl = 0;
+	bcs->ctrl.sr.cmd  = HDLC_CMD_XRS | HDLC_CMD_RRS;
+	switch (mode) {
+	case L1_MODE_NULL:
+		bcs->ctrl.sr.mode = HDLC_MODE_TRANS;
+		adapter->write_ctrl(bcs, 5);
+		break;
+	case L1_MODE_TRANS:
+	case L1_MODE_HDLC:
+		bcs->rcvidx = 0;
+		bcs->tx_cnt = 0;
+		bcs->tx_skb = NULL;
+		if (mode == L1_MODE_TRANS) {
+			bcs->ctrl.sr.mode = HDLC_MODE_TRANS;
+		} else {
+			bcs->ctrl.sr.mode = HDLC_MODE_ITF_FLG;
+		}
+		adapter->write_ctrl(bcs, 5);
+		bcs->ctrl.sr.cmd = HDLC_CMD_XRS;
+		adapter->write_ctrl(bcs, 1);
+		bcs->ctrl.sr.cmd = 0;
+		break;
+	}
+	bcs->mode = mode;
+}
+
+static void fritz_b_l2l1(struct hisax_if *ifc, int pr, void *arg)
+{
+	struct fritz_bcs *bcs = ifc->priv;
+	struct sk_buff *skb = arg;
+	int mode;
+
+	DBG(0x10, "pr %#x", pr);
+
+	switch (pr) {
+	case PH_DATA | REQUEST:
+		if (bcs->tx_skb)
+			BUG();
+		
+		bcs->tx_skb = skb;
+		DBG_SKB(1, skb);
+		hdlc_fill_fifo(bcs);
+		break;
+	case PH_ACTIVATE | REQUEST:
+		mode = (int) arg;
+		DBG(4,"B%d,PH_ACTIVATE_REQUEST %d", bcs->channel + 1, mode);
+		modehdlc(bcs, mode);
+		B_L1L2(bcs, PH_ACTIVATE | INDICATION, NULL);
+		break;
+	case PH_DEACTIVATE | REQUEST:
+		DBG(4,"B%d,PH_DEACTIVATE_REQUEST", bcs->channel + 1);
+		modehdlc(bcs, L1_MODE_NULL);
+		B_L1L2(bcs, PH_DEACTIVATE | INDICATION, NULL);
+		break;
+	}
+}
+
+// ----------------------------------------------------------------------
+
+static irqreturn_t
+fcpci2_irq(int intno, void *dev, struct pt_regs *regs)
+{
+	struct fritz_adapter *adapter = dev;
+	unsigned char val;
+
+	val = inb(adapter->io + AVM_STATUS0);
+	if (!(val & AVM_STATUS0_IRQ_MASK))
+		/* hopefully a shared  IRQ reqest */
+		return IRQ_NONE;
+	DBG(2, "STATUS0 %#x", val);
+	if (val & AVM_STATUS0_IRQ_ISAC)
+		isacsx_irq(&adapter->isac);
+	if (val & AVM_STATUS0_IRQ_HDLC)
+		hdlc_irq(adapter);
+	if (val & AVM_STATUS0_IRQ_ISAC)
+		isacsx_irq(&adapter->isac);
+	return IRQ_HANDLED;
+}
+
+static irqreturn_t
+fcpci_irq(int intno, void *dev, struct pt_regs *regs)
+{
+	struct fritz_adapter *adapter = dev;
+	unsigned char sval;
+
+	sval = inb(adapter->io + 2);
+	if ((sval & AVM_STATUS0_IRQ_MASK) == AVM_STATUS0_IRQ_MASK)
+		/* possibly a shared  IRQ reqest */
+		return IRQ_NONE;
+	DBG(2, "sval %#x", sval);
+	if (!(sval & AVM_STATUS0_IRQ_ISAC))
+		isac_irq(&adapter->isac);
+
+	if (!(sval & AVM_STATUS0_IRQ_HDLC))
+		hdlc_irq(adapter);
+	return IRQ_HANDLED;
+}
+
+// ----------------------------------------------------------------------
+
+static inline void fcpci2_init(struct fritz_adapter *adapter)
+{
+	outb(AVM_STATUS0_RES_TIMER, adapter->io + AVM_STATUS0);
+	outb(AVM_STATUS0_ENA_IRQ, adapter->io + AVM_STATUS0);
+
+}
+
+static inline void fcpci_init(struct fritz_adapter *adapter)
+{
+	outb(AVM_STATUS0_DIS_TIMER | AVM_STATUS0_RES_TIMER | 
+	     AVM_STATUS0_ENA_IRQ, adapter->io + AVM_STATUS0);
+
+	outb(AVM_STATUS1_ENA_IOM | adapter->irq, 
+	     adapter->io + AVM_STATUS1);
+	mdelay(10);
+}
+
+// ----------------------------------------------------------------------
+
+static int __devinit fcpcipnp_setup(struct fritz_adapter *adapter)
+{
+	u32 val = 0;
+	int retval;
+
+	DBG(1,"");
+
+	isac_init(&adapter->isac); // FIXME is this okay now
+
+	retval = -EBUSY;
+	if (!request_region(adapter->io, 32, "fcpcipnp"))
+		goto err;
+
+	switch (adapter->type) {
+	case AVM_FRITZ_PCIV2:
+		retval = request_irq(adapter->irq, fcpci2_irq, SA_SHIRQ, 
+				     "fcpcipnp", adapter);
+		break;
+	case AVM_FRITZ_PCI:
+		retval = request_irq(adapter->irq, fcpci_irq, SA_SHIRQ,
+				     "fcpcipnp", adapter);
+		break;
+	case AVM_FRITZ_PNP:
+		retval = request_irq(adapter->irq, fcpci_irq, 0,
+				     "fcpcipnp", adapter);
+		break;
+	}
+	if (retval)
+		goto err_region;
+
+	switch (adapter->type) {
+	case AVM_FRITZ_PCIV2:
+	case AVM_FRITZ_PCI:
+		val = inl(adapter->io);
+		break;
+	case AVM_FRITZ_PNP:
+		val = inb(adapter->io);
+		val |= inb(adapter->io + 1) << 8;
+		break;
+	}
+
+	DBG(1, "stat %#x Class %X Rev %d",
+	    val, val & 0xff, (val>>8) & 0xff);
+
+	spin_lock_init(&adapter->hw_lock);
+	adapter->isac.priv = adapter;
+	switch (adapter->type) {
+	case AVM_FRITZ_PCIV2:
+		adapter->isac.read_isac       = &fcpci2_read_isac;
+		adapter->isac.write_isac      = &fcpci2_write_isac;
+		adapter->isac.read_isac_fifo  = &fcpci2_read_isac_fifo;
+		adapter->isac.write_isac_fifo = &fcpci2_write_isac_fifo;
+
+		adapter->read_hdlc_status     = &fcpci2_read_hdlc_status;
+		adapter->write_ctrl           = &fcpci2_write_ctrl;
+		break;
+	case AVM_FRITZ_PCI:
+		adapter->isac.read_isac       = &fcpci_read_isac;
+		adapter->isac.write_isac      = &fcpci_write_isac;
+		adapter->isac.read_isac_fifo  = &fcpci_read_isac_fifo;
+		adapter->isac.write_isac_fifo = &fcpci_write_isac_fifo;
+
+		adapter->read_hdlc_status     = &fcpci_read_hdlc_status;
+		adapter->write_ctrl           = &fcpci_write_ctrl;
+		break;
+	case AVM_FRITZ_PNP:
+		adapter->isac.read_isac       = &fcpci_read_isac;
+		adapter->isac.write_isac      = &fcpci_write_isac;
+		adapter->isac.read_isac_fifo  = &fcpci_read_isac_fifo;
+		adapter->isac.write_isac_fifo = &fcpci_write_isac_fifo;
+
+		adapter->read_hdlc_status     = &fcpnp_read_hdlc_status;
+		adapter->write_ctrl           = &fcpnp_write_ctrl;
+		break;
+	}
+
+	// Reset
+	outb(0, adapter->io + AVM_STATUS0);
+	mdelay(10);
+	outb(AVM_STATUS0_RESET, adapter->io + AVM_STATUS0);
+	mdelay(10);
+	outb(0, adapter->io + AVM_STATUS0);
+	mdelay(10);
+
+	switch (adapter->type) {
+	case AVM_FRITZ_PCIV2:
+		fcpci2_init(adapter);
+		isacsx_setup(&adapter->isac);
+		break;
+	case AVM_FRITZ_PCI:
+	case AVM_FRITZ_PNP:
+		fcpci_init(adapter);
+		isac_setup(&adapter->isac);
+		break;
+	}
+	val = adapter->read_hdlc_status(adapter, 0);
+	DBG(0x20, "HDLC A STA %x", val);
+	val = adapter->read_hdlc_status(adapter, 1);
+	DBG(0x20, "HDLC B STA %x", val);
+
+	adapter->bcs[0].mode = -1;
+	adapter->bcs[1].mode = -1;
+	modehdlc(&adapter->bcs[0], L1_MODE_NULL);
+	modehdlc(&adapter->bcs[1], L1_MODE_NULL);
+
+	return 0;
+
+ err_region:
+	release_region(adapter->io, 32);
+ err:
+	return retval;
+}
+
+static void __devexit fcpcipnp_release(struct fritz_adapter *adapter)
+{
+	DBG(1,"");
+
+	outb(0, adapter->io + AVM_STATUS0);
+	free_irq(adapter->irq, adapter);
+	release_region(adapter->io, 32);
+}
+
+// ----------------------------------------------------------------------
+
+static struct fritz_adapter * __devinit 
+new_adapter(void)
+{
+	struct fritz_adapter *adapter;
+	struct hisax_b_if *b_if[2];
+	int i;
+
+	adapter = kmalloc(sizeof(struct fritz_adapter), GFP_KERNEL);
+	if (!adapter)
+		return NULL;
+
+	memset(adapter, 0, sizeof(struct fritz_adapter));
+
+	adapter->isac.hisax_d_if.owner = THIS_MODULE;
+	adapter->isac.hisax_d_if.ifc.priv = &adapter->isac;
+	adapter->isac.hisax_d_if.ifc.l2l1 = isac_d_l2l1;
+	
+	for (i = 0; i < 2; i++) {
+		adapter->bcs[i].adapter = adapter;
+		adapter->bcs[i].channel = i;
+		adapter->bcs[i].b_if.ifc.priv = &adapter->bcs[i];
+		adapter->bcs[i].b_if.ifc.l2l1 = fritz_b_l2l1;
+	}
+
+	for (i = 0; i < 2; i++)
+		b_if[i] = &adapter->bcs[i].b_if;
+
+	hisax_register(&adapter->isac.hisax_d_if, b_if, "fcpcipnp", protocol);
+
+	return adapter;
+}
+
+static void delete_adapter(struct fritz_adapter *adapter)
+{
+	hisax_unregister(&adapter->isac.hisax_d_if);
+	kfree(adapter);
+}
+
+static int __devinit fcpci_probe(struct pci_dev *pdev,
+				 const struct pci_device_id *ent)
+{
+	struct fritz_adapter *adapter;
+	int retval;
+
+	retval = -ENOMEM;
+	adapter = new_adapter();
+	if (!adapter)
+		goto err;
+
+	pci_set_drvdata(pdev, adapter);
+
+	if (pdev->device == PCI_DEVICE_ID_AVM_A1_V2) 
+		adapter->type = AVM_FRITZ_PCIV2;
+	else
+		adapter->type = AVM_FRITZ_PCI;
+
+	retval = pci_enable_device(pdev);
+	if (retval)
+		goto err_free;
+
+	adapter->io = pci_resource_start(pdev, 1);
+	adapter->irq = pdev->irq;
+
+	printk(KERN_INFO "hisax_fcpcipnp: found adapter %s at %s\n",
+	       (char *) ent->driver_data, pci_name(pdev));
+
+	retval = fcpcipnp_setup(adapter);
+	if (retval)
+		goto err_free;
+
+	return 0;
+	
+ err_free:
+	delete_adapter(adapter);
+ err:
+	return retval;
+}
+
+#ifdef __ISAPNP__
+static int __devinit fcpnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *dev_id)
+{
+	struct fritz_adapter *adapter;
+	int retval;
+
+	if (!pdev)
+		return(-ENODEV);
+
+	retval = -ENOMEM;
+	adapter = new_adapter();
+	if (!adapter)
+		goto err;
+
+	pnp_set_drvdata(pdev, adapter);
+
+	adapter->type = AVM_FRITZ_PNP;
+
+	pnp_disable_dev(pdev);
+	retval = pnp_activate_dev(pdev);
+	if (retval < 0) {
+		printk(KERN_WARNING "%s: pnp_activate_dev(%s) ret(%d)\n", __FUNCTION__,
+			(char *)dev_id->driver_data, retval);
+		goto err_free;
+	}
+	adapter->io = pnp_port_start(pdev, 0);
+	adapter->irq = pnp_irq(pdev, 0);
+
+	printk(KERN_INFO "hisax_fcpcipnp: found adapter %s at IO %#x irq %d\n",
+	       (char *) dev_id->driver_data, adapter->io, adapter->irq);
+
+	retval = fcpcipnp_setup(adapter);
+	if (retval)
+		goto err_free;
+
+	return 0;
+	
+ err_free:
+	delete_adapter(adapter);
+ err:
+	return retval;
+}
+
+static void __devexit fcpnp_remove(struct pnp_dev *pdev)
+{
+	struct fritz_adapter *adapter = pnp_get_drvdata(pdev);
+
+	if (adapter) {
+		fcpcipnp_release(adapter);
+		delete_adapter(adapter);
+	}
+	pnp_disable_dev(pdev);
+}
+
+static struct pnp_driver fcpnp_driver = {
+	.name		= "fcpnp",
+	.probe		= fcpnp_probe,
+	.remove		= __devexit_p(fcpnp_remove),
+	.id_table	= fcpnp_ids,
+};
+#endif
+
+static void __devexit fcpci_remove(struct pci_dev *pdev)
+{
+	struct fritz_adapter *adapter = pci_get_drvdata(pdev);
+
+	fcpcipnp_release(adapter);
+	pci_disable_device(pdev);
+	delete_adapter(adapter);
+}
+
+static struct pci_driver fcpci_driver = {
+	.name		= "fcpci",
+	.probe		= fcpci_probe,
+	.remove		= __devexit_p(fcpci_remove),
+	.id_table	= fcpci_ids,
+};
+
+static int __init hisax_fcpcipnp_init(void)
+{
+	int retval;
+
+	printk(KERN_INFO "hisax_fcpcipnp: Fritz!Card PCI/PCIv2/PnP ISDN driver v0.0.1\n");
+
+	retval = pci_register_driver(&fcpci_driver);
+	if (retval)
+		goto out;
+#ifdef __ISAPNP__
+	retval = pnp_register_driver(&fcpnp_driver);
+	if (retval < 0)
+		goto out_unregister_pci;
+#endif
+	return 0;
+
+ out_unregister_pci:
+	pci_unregister_driver(&fcpci_driver);
+ out:
+	return retval;
+}
+
+static void __exit hisax_fcpcipnp_exit(void)
+{
+#ifdef __ISAPNP__
+	pnp_unregister_driver(&fcpnp_driver);
+#endif
+	pci_unregister_driver(&fcpci_driver);
+}
+
+module_init(hisax_fcpcipnp_init);
+module_exit(hisax_fcpcipnp_exit);