path: root/drivers/isdn/hisax/hisax_fcpcipnp.c

/*
 * 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/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);