[PATCH 11/17] Add a driver for the Technisat Skystar2 DVB card

[Michael Hunold (LinuxTV.org CVS maintainer) <hunold@convergence.de>]

[DVB] - add DVB driver for Technisat Skystar2 card, which is based on
        the FlexCop2 chipset by B2C2
diff -uNrwB --new-file linux-2.6.0-test1.work/drivers/media/dvb/b2c2/Kconfig linux-2.6.0-test1.patch/drivers/media/dvb/b2c2/Kconfig
--- linux-2.6.0-test1.work/drivers/media/dvb/b2c2/Kconfig	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.0-test1.patch/drivers/media/dvb/b2c2/Kconfig	2003-07-15 09:47:16.000000000 +0200
@@ -0,0 +1,8 @@
+config DVB_B2C2_SKYSTAR
+	tristate "Technisat Skystar2 PCI"
+	depends on DVB_CORE
+	help
+	  Support for the Skystar2 PCI DVB card by Technisat, which
+	  is equipped with the FlexCopII chipset by B2C2.
+
+	  Say Y if you own such a device and want to use it.
diff -uNrwB --new-file linux-2.6.0-test1.work/drivers/media/dvb/b2c2/Makefile linux-2.6.0-test1.patch/drivers/media/dvb/b2c2/Makefile
--- linux-2.6.0-test1.work/drivers/media/dvb/b2c2/Makefile	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.0-test1.patch/drivers/media/dvb/b2c2/Makefile	2003-07-15 09:45:20.000000000 +0200
@@ -0,0 +1,3 @@
+obj-$(DVB_B2C2_SKYSTAR) += skystar.o
+
+EXTRA_CFLAGS = -Idrivers/media/dvb/dvb-core/
diff -uNrwB --new-file linux-2.6.0-test1.work/drivers/media/dvb/b2c2/skystar2.c linux-2.6.0-test1.patch/drivers/media/dvb/b2c2/skystar2.c
--- linux-2.6.0-test1.work/drivers/media/dvb/b2c2/skystar2.c	1970-01-01 01:00:00.000000000 +0100
+++ linux-2.6.0-test1.patch/drivers/media/dvb/b2c2/skystar2.c	2003-07-14 12:07:03.000000000 +0200
@@ -0,0 +1,2548 @@
+/*
+ * skystar2.c - driver for the Technisat SkyStar2 PCI DVB card
+ *              based on the FlexCopII by B2C2,Inc.
+ *
+ * Copyright (C) 2003  V.C. , skystar@moldova.cc
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public License
+ * as published by the Free Software Foundation; either version 2.1
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+#include <linux/module.h>
+#include <linux/delay.h>
+#include <linux/pci.h>
+
+#include "dvb_i2c.h"
+#include "dvb_frontend.h"
+#include "dvb_functions.h"
+
+#include <linux/dvb/frontend.h>
+#include <linux/dvb/dmx.h>
+#include "dvb_demux.h"
+#include "dmxdev.h"
+#include "dvb_filter.h"
+#include "dvbdev.h"
+#include "demux.h"
+#include "dvb_net.h"
+
+int debug = 0;
+#define dprintk	if(debug != 0) printk
+
+#define SizeOfBufDMA1	0x3AC00
+#define SizeOfBufDMA2	0x758
+
+struct DmaQ {
+
+	u32 bus_addr;
+	u32 head;
+	u32 tail;
+	u32 buffer_size;
+	u8 *buffer;
+};
+
+struct packet_header_t {
+
+	u32 sync_byte;
+	u32 transport_error_indicator;
+	u32 payload_unit_start_indicator;
+	u32 transport_priority;
+	u32 pid;
+	u32 transport_scrambling_control;
+	u32 adaptation_field_control;
+	u32 continuity_counter;
+};
+
+struct adapter {
+
+	struct pci_dev *pdev;
+
+	u8 card_revision;
+	u32 B2C2_revision;
+	u32 PidFilterMax;
+	u32 MacFilterMax;
+	u32 irq;
+	u32 io_mem;
+	u32 io_port;
+	u8 mac_addr[8];
+	u32 dwSramType;
+
+	struct dvb_adapter *dvb_adapter;
+	struct dvb_demux demux;
+	struct dmxdev dmxdev;
+	struct dmx_frontend hw_frontend;
+	struct dmx_frontend mem_frontend;
+	struct dvb_i2c_bus *i2c_bus;
+	struct dvb_net dvbnet;
+
+	struct semaphore i2c_sem;
+
+	struct DmaQ DmaQ1;
+	struct DmaQ DmaQ2;
+
+	u32 dma_ctrl;
+	u32 dma_status;
+
+	u32 capturing;
+
+	spinlock_t lock;
+
+	u16 pids[0x27];
+	u32 mac_filter;
+};
+
+
+void linuxdelayms(u32 usecs)
+{
+	while (usecs > 0) {
+		udelay(1000);
+
+		usecs--;
+	}
+}
+
+/////////////////////////////////////////////////////////////////////
+//              register functions
+/////////////////////////////////////////////////////////////////////
+
+void WriteRegDW(struct adapter *adapter, u32 reg, u32 value)
+{
+	u32 flags;
+
+	save_flags(flags);
+	cli();
+
+	writel(value, adapter->io_mem + reg);
+
+	restore_flags(flags);
+}
+
+u32 ReadRegDW(struct adapter *adapter, u32 reg)
+{
+	return readl(adapter->io_mem + reg);
+}
+
+u32 WriteRegOp(struct adapter * adapter, u32 reg, u32 operation, u32 andvalue, u32 orvalue)
+{
+	u32 tmp;
+
+	tmp = ReadRegDW(adapter, reg);
+
+	if (operation == 1)
+		tmp = tmp | orvalue;
+	if (operation == 2)
+		tmp = tmp & andvalue;
+	if (operation == 3)
+		tmp = (tmp & andvalue) | orvalue;
+
+	WriteRegDW(adapter, reg, tmp);
+
+	return tmp;
+}
+
+/////////////////////////////////////////////////////////////////////
+//                      I2C
+////////////////////////////////////////////////////////////////////
+
+u32 i2cMainWriteForFlex2(struct adapter * adapter, u32 command, u8 * buf, u32 retries)
+{
+	u32 i;
+	u32 value;
+
+	WriteRegDW(adapter, 0x100, 0);
+	WriteRegDW(adapter, 0x100, command);
+
+	for (i = 0; i < retries; i++) {
+		value = ReadRegDW(adapter, 0x100);
+
+		if ((value & 0x40000000) == 0) {
+			if ((value & 0x81000000) == 0x80000000) {
+				if (buf != 0)
+					*buf = (value >> 0x10) & 0xff;
+
+				return 1;
+			}
+
+		} else {
+
+			WriteRegDW(adapter, 0x100, 0);
+			WriteRegDW(adapter, 0x100, command);
+		}
+	}
+
+	return 0;
+}
+
+/////////////////////////////////////////////////////////////////////
+//      device = 0x10000000 for tuner
+//               0x20000000 for eeprom
+/////////////////////////////////////////////////////////////////////
+
+u32 i2cMainSetup(u32 device, u32 chip_addr, u8 op, u8 addr, u32 value, u32 len)
+{
+	u32 command;
+
+	command = device | ((len - 1) << 26) | (value << 16) | (addr << 8) | chip_addr;
+
+	if (op != 0)
+		command = command | 0x03000000;
+	else
+		command = command | 0x01000000;
+
+	return command;
+}
+
+u32 FlexI2cRead4(struct adapter * adapter, u32 device, u32 chip_addr, u16 addr, u8 * buf, u8 len)
+{
+	u32 command;
+	u32 value;
+
+	int result, i;
+
+	command = i2cMainSetup(device, chip_addr, 1, addr, 0, len);
+
+	result = i2cMainWriteForFlex2(adapter, command, buf, 100000);
+
+	if ((result & 0xff) != 0) {
+		if (len > 1) {
+			value = ReadRegDW(adapter, 0x104);
+
+			for (i = 1; i < len; i++) {
+				buf[i] = value & 0xff;
+				value = value >> 8;
+			}
+		}
+	}
+
+	return result;
+}
+
+u32 FlexI2cWrite4(struct adapter * adapter, u32 device, u32 chip_addr, u32 addr, u8 * buf, u8 len)
+{
+	u32 command;
+	u32 value;
+	int i;
+
+	if (len > 1) {
+		value = 0;
+
+		for (i = len; i > 1; i--) {
+			value = value << 8;
+			value = value | buf[i - 1];
+		}
+
+		WriteRegDW(adapter, 0x104, value);
+	}
+
+	command = i2cMainSetup(device, chip_addr, 0, addr, buf[0], len);
+
+	return i2cMainWriteForFlex2(adapter, command, 0, 100000);
+}
+
+u32 fixChipAddr(u32 device, u32 bus, u32 addr)
+{
+	if (device == 0x20000000)
+		return bus | ((addr >> 8) & 3);
+
+	return bus;
+}
+
+u32 FLEXI2C_read(struct adapter * adapter, u32 device, u32 bus, u32 addr, u8 * buf, u32 len)
+{
+	u32 ChipAddr;
+	u32 bytes_to_transfer;
+	u8 *start;
+
+//  dprintk("%s:\n", __FUNCTION__);
+
+	start = buf;
+
+	while (len != 0) {
+		bytes_to_transfer = len;
+
+		if (bytes_to_transfer > 4)
+			bytes_to_transfer = 4;
+
+		ChipAddr = fixChipAddr(device, bus, addr);
+
+		if (FlexI2cRead4(adapter, device, ChipAddr, addr, buf, bytes_to_transfer) == 0)
+			return buf - start;
+
+		buf = buf + bytes_to_transfer;
+		addr = addr + bytes_to_transfer;
+		len = len - bytes_to_transfer;
+	};
+
+	return buf - start;
+}
+
+u32 FLEXI2C_write(struct adapter * adapter, u32 device, u32 bus, u32 addr, u8 * buf, u32 len)
+{
+	u32 ChipAddr;
+	u32 bytes_to_transfer;
+	u8 *start;
+
+//  dprintk("%s:\n", __FUNCTION__);
+
+	start = buf;
+
+	while (len != 0) {
+		bytes_to_transfer = len;
+
+		if (bytes_to_transfer > 4)
+			bytes_to_transfer = 4;
+
+		ChipAddr = fixChipAddr(device, bus, addr);
+
+		if (FlexI2cWrite4(adapter, device, ChipAddr, addr, buf, bytes_to_transfer) == 0)
+			return buf - start;
+
+		buf = buf + bytes_to_transfer;
+		addr = addr + bytes_to_transfer;
+		len = len - bytes_to_transfer;
+	}
+
+	return buf - start;
+}
+
+static int master_xfer(struct dvb_i2c_bus *i2c, const struct i2c_msg *msgs, int num)
+{
+	struct adapter *tmp = i2c->data;
+	int i, ret = 0;
+
+	if (down_interruptible(&tmp->i2c_sem))
+		return -ERESTARTSYS;
+
+	if (0) {
+		dprintk("%s:\n", __FUNCTION__);
+
+		for (i = 0; i < num; i++) {
+			printk("message %d: flags=%x, addr=0x%04x, buf=%x, len=%d \n", i, msgs[i].flags, msgs[i].addr, (u32) msgs[i].buf, msgs[i].len);
+		}
+	}
+	// allow only the vp310 frontend to access the bus
+	if ((msgs[0].addr != 0x0E) && (msgs[0].addr != 0x61)) {
+		up(&tmp->i2c_sem);
+
+		return -EREMOTEIO;
+	}
+
+	if ((num == 1) && (msgs[0].buf != NULL)) {
+		if (msgs[0].flags == I2C_M_RD) {
+			ret = -EINVAL;
+
+		} else {
+
+			// single writes do have the reg addr in buf[0] and data in buf[1] to buf[n]
+			ret = FLEXI2C_write(tmp, 0x10000000, msgs[0].addr, msgs[0].buf[0], &msgs[0].buf[1], msgs[0].len - 1);
+
+			if (ret != msgs[0].len - 1)
+				ret = -EREMOTEIO;
+			else
+				ret = num;
+		}
+
+	} else if ((num == 2) && (msgs[1].buf != NULL)) {
+
+		// i2c reads consist of a reg addr _write_ followed by a data read, so msg[1].flags has to be examined
+		if (msgs[1].flags == I2C_M_RD) {
+			ret = FLEXI2C_read(tmp, 0x10000000, msgs[0].addr, msgs[0].buf[0], msgs[1].buf, msgs[1].len);
+
+		} else {
+
+			ret = FLEXI2C_write(tmp, 0x10000000, msgs[0].addr, msgs[0].buf[0], msgs[1].buf, msgs[1].len);
+		}
+
+		if (ret != msgs[1].len)
+			ret = -EREMOTEIO;
+		else
+			ret = num;
+	}
+
+	up(&tmp->i2c_sem);
+
+	// master xfer functions always return the number of successfully
+	// transmitted messages, not the number of transmitted bytes.
+	// return -EREMOTEIO in case of failure.
+	return ret;
+}
+
+/////////////////////////////////////////////////////////////////////
+// SRAM (Skystar2 rev2.3 has one "ISSI IS61LV256" chip on board,
+// but it seems that FlexCopII can work with more than one chip)
+/////////////////////////////////////////////////////////////////////
+
+u32 SRAMSetNetDest(struct adapter * adapter, u8 dest)
+{
+	u32 tmp;
+
+	udelay(1000);
+
+	tmp = (ReadRegDW(adapter, 0x714) & 0xFFFFFFFC) | (dest & 3);
+
+	udelay(1000);
+
+	WriteRegDW(adapter, 0x714, tmp);
+	WriteRegDW(adapter, 0x714, tmp);
+
+	udelay(1000);
+
+	return tmp;
+}
+
+u32 SRAMSetCaiDest(struct adapter * adapter, u8 dest)
+{
+	u32 tmp;
+
+	udelay(1000);
+
+	tmp = (ReadRegDW(adapter, 0x714) & 0xFFFFFFF3) | ((dest & 3) << 2);
+
+	udelay(1000);
+	udelay(1000);
+
+	WriteRegDW(adapter, 0x714, tmp);
+	WriteRegDW(adapter, 0x714, tmp);
+
+	udelay(1000);
+
+	return tmp;
+}
+
+u32 SRAMSetCaoDest(struct adapter * adapter, u8 dest)
+{
+	u32 tmp;
+
+	udelay(1000);
+
+	tmp = (ReadRegDW(adapter, 0x714) & 0xFFFFFFCF) | ((dest & 3) << 4);
+
+	udelay(1000);
+	udelay(1000);
+
+	WriteRegDW(adapter, 0x714, tmp);
+	WriteRegDW(adapter, 0x714, tmp);
+
+	udelay(1000);
+
+	return tmp;
+}
+
+u32 SRAMSetMediaDest(struct adapter * adapter, u8 dest)
+{
+	u32 tmp;
+
+	udelay(1000);
+
+	tmp = (ReadRegDW(adapter, 0x714) & 0xFFFFFF3F) | ((dest & 3) << 6);
+
+	udelay(1000);
+	udelay(1000);
+
+	WriteRegDW(adapter, 0x714, tmp);
+	WriteRegDW(adapter, 0x714, tmp);
+
+	udelay(1000);
+
+	return tmp;
+}
+
+/////////////////////////////////////////////////////////////////////
+// SRAM memory is accessed through a buffer register in the FlexCop
+// chip (0x700). This register has the following structure:
+//  bits 0-14  : address
+//  bit  15    : read/write flag
+//  bits 16-23 : 8-bit word to write
+//  bits 24-27 : = 4
+//  bits 28-29 : memory bank selector
+//  bit  31    : busy flag
+////////////////////////////////////////////////////////////////////
+
+void FlexSramWrite(struct adapter *adapter, u32 bank, u32 addr, u8 * buf, u32 len)
+{
+	u32 i, command, retries;
+
+	for (i = 0; i < len; i++) {
+		command = bank | addr | 0x04000000 | (*buf << 0x10);
+
+		retries = 2;
+
+		while (((ReadRegDW(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
+			linuxdelayms(1);
+			retries--;
+		};
+
+		if (retries == 0)
+			printk("%s: SRAM timeout\n", __FUNCTION__);
+
+		WriteRegDW(adapter, 0x700, command);
+
+		buf++;
+		addr++;
+	}
+}
+
+void FlexSramRead(struct adapter *adapter, u32 bank, u32 addr, u8 * buf, u32 len)
+{
+	u32 i, command, value, retries;
+
+	for (i = 0; i < len; i++) {
+		command = bank | addr | 0x04008000;
+
+		retries = 10000;
+
+		while (((ReadRegDW(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
+			linuxdelayms(1);
+			retries--;
+		};
+
+		if (retries == 0)
+			printk("%s: SRAM timeout\n", __FUNCTION__);
+
+		WriteRegDW(adapter, 0x700, command);
+
+		retries = 10000;
+
+		while (((ReadRegDW(adapter, 0x700) & 0x80000000) != 0) && (retries > 0)) {
+			linuxdelayms(1);
+			retries--;
+		};
+
+		if (retries == 0)
+			printk("%s: SRAM timeout\n", __FUNCTION__);
+
+		value = ReadRegDW(adapter, 0x700) >> 0x10;
+
+		*buf = (value & 0xff);
+
+		addr++;
+		buf++;
+	}
+}
+
+void SRAM_writeChunk(struct adapter *adapter, u32 addr, u8 * buf, u16 len)
+{
+	u32 bank;
+
+	bank = 0;
+
+	if (adapter->dwSramType == 0x20000) {
+		bank = (addr & 0x18000) << 0x0D;
+	}
+
+	if (adapter->dwSramType == 0x00000) {
+		if ((addr >> 0x0F) == 0)
+			bank = 0x20000000;
+		else
+			bank = 0x10000000;
+	}
+
+	FlexSramWrite(adapter, bank, addr & 0x7FFF, buf, len);
+}
+
+void SRAM_readChunk(struct adapter *adapter, u32 addr, u8 * buf, u16 len)
+{
+	u32 bank;
+
+	bank = 0;
+
+	if (adapter->dwSramType == 0x20000) {
+		bank = (addr & 0x18000) << 0x0D;
+	}
+
+	if (adapter->dwSramType == 0x00000) {
+		if ((addr >> 0x0F) == 0)
+			bank = 0x20000000;
+		else
+			bank = 0x10000000;
+	}
+
+	FlexSramRead(adapter, bank, addr & 0x7FFF, buf, len);
+}
+
+void SRAM_read(struct adapter *adapter, u32 addr, u8 * buf, u32 len)
+{
+	u32 length;
+
+	while (len != 0) {
+		length = len;
+
+		// check if the address range belongs to the same 
+		// 32K memory chip. If not, the data is read from 
+		// one chip at a time.
+		if ((addr >> 0x0F) != ((addr + len - 1) >> 0x0F)) {
+			length = (((addr >> 0x0F) + 1) << 0x0F) - addr;
+		}
+
+		SRAM_readChunk(adapter, addr, buf, length);
+
+		addr = addr + length;
+		buf = buf + length;
+		len = len - length;
+	}
+}
+
+void SRAM_write(struct adapter *adapter, u32 addr, u8 * buf, u32 len)
+{
+	u32 length;
+
+	while (len != 0) {
+		length = len;
+
+		// check if the address range belongs to the same 
+		// 32K memory chip. If not, the data is written to
+		// one chip at a time.
+		if ((addr >> 0x0F) != ((addr + len - 1) >> 0x0F)) {
+			length = (((addr >> 0x0F) + 1) << 0x0F) - addr;
+		}
+
+		SRAM_writeChunk(adapter, addr, buf, length);
+
+		addr = addr + length;
+		buf = buf + length;
+		len = len - length;
+	}
+}
+
+void SRAM_setSize(struct adapter *adapter, u32 mask)
+{
+	WriteRegDW(adapter, 0x71C, (mask | (~0x30000 & ReadRegDW(adapter, 0x71C))));
+}
+
+u32 SRAM_init(struct adapter *adapter)
+{
+	u32 tmp;
+
+	tmp = ReadRegDW(adapter, 0x71C);
+
+	WriteRegDW(adapter, 0x71C, 1);
+
+	if (ReadRegDW(adapter, 0x71C) != 0) {
+		WriteRegDW(adapter, 0x71C, tmp);
+
+		adapter->dwSramType = tmp & 0x30000;
+
+		dprintk("%s: dwSramType = %x\n", __FUNCTION__, adapter->dwSramType);
+
+	} else {
+
+		adapter->dwSramType = 0x10000;
+
+		dprintk("%s: dwSramType = %x\n", __FUNCTION__, adapter->dwSramType);
+	}
+
+	return adapter->dwSramType;
+}
+
+int SRAM_testLocation(struct adapter *adapter, u32 mask, u32 addr)
+{
+	u8 tmp1, tmp2;
+
+	dprintk("%s: mask = %x, addr = %x\n", __FUNCTION__, mask, addr);
+
+	SRAM_setSize(adapter, mask);
+	SRAM_init(adapter);
+
+	tmp2 = 0xA5;
+	tmp1 = 0x4F;
+
+	SRAM_write(adapter, addr, &tmp2, 1);
+	SRAM_write(adapter, addr + 4, &tmp1, 1);
+
+	tmp2 = 0;
+
+	linuxdelayms(20);
+
+	SRAM_read(adapter, addr, &tmp2, 1);
+	SRAM_read(adapter, addr, &tmp2, 1);
+
+	dprintk("%s: wrote 0xA5, read 0x%2x\n", __FUNCTION__, tmp2);
+
+	if (tmp2 != 0xA5)
+		return 0;
+
+	tmp2 = 0x5A;
+	tmp1 = 0xF4;
+
+	SRAM_write(adapter, addr, &tmp2, 1);
+	SRAM_write(adapter, addr + 4, &tmp1, 1);
+
+	tmp2 = 0;
+
+	linuxdelayms(20);
+
+	SRAM_read(adapter, addr, &tmp2, 1);
+	SRAM_read(adapter, addr, &tmp2, 1);
+
+	dprintk("%s: wrote 0x5A, read 0x%2x\n", __FUNCTION__, tmp2);
+
+	if (tmp2 != 0x5A)
+		return 0;
+
+	return 1;
+}
+
+u32 SRAM_length(struct adapter * adapter)
+{
+	if (adapter->dwSramType == 0x10000)
+		return 32768;	//  32K
+	if (adapter->dwSramType == 0x00000)
+		return 65536;	//  64K        
+	if (adapter->dwSramType == 0x20000)
+		return 131072;	// 128K
+
+	return 32768;		// 32K
+}
+
+//////////////////////////////////////////////////////////////////////
+// FlexcopII can work with 32K, 64K or 128K of external SRAM memory.
+//  - for 128K there are 4x32K chips at bank 0,1,2,3.
+//  - for  64K there are 2x32K chips at bank 1,2.
+//  - for  32K there is one 32K chip at bank 0.
+//
+// FlexCop works only with one bank at a time. The bank is selected
+// by bits 28-29 of the 0x700 register.
+//
+// bank 0 covers addresses 0x00000-0x07FFF
+// bank 1 covers addresses 0x08000-0x0FFFF
+// bank 2 covers addresses 0x10000-0x17FFF
+// bank 3 covers addresses 0x18000-0x1FFFF
+/////////////////////////////////////////////////////////////////////
+
+int SramDetectForFlex2(struct adapter *adapter)
+{
+	u32 tmp, tmp2, tmp3;
+
+	dprintk("%s:\n", __FUNCTION__);
+
+	tmp = ReadRegDW(adapter, 0x208);
+	WriteRegDW(adapter, 0x208, 0);
+
+	tmp2 = ReadRegDW(adapter, 0x71C);
+
+	dprintk("%s: tmp2 = %x\n", __FUNCTION__, tmp2);
+
+	WriteRegDW(adapter, 0x71C, 1);
+
+	tmp3 = ReadRegDW(adapter, 0x71C);
+
+	dprintk("%s: tmp3 = %x\n", __FUNCTION__, tmp3);
+
+	WriteRegDW(adapter, 0x71C, tmp2);
+
+	// check for internal SRAM ???
+	tmp3--;
+	if (tmp3 != 0) {
+		SRAM_setSize(adapter, 0x10000);
+		SRAM_init(adapter);
+		WriteRegDW(adapter, 0x208, tmp);
+
+		dprintk("%s: sram size = 32K\n", __FUNCTION__);
+
+		return 32;
+	}
+
+	if (SRAM_testLocation(adapter, 0x20000, 0x18000) != 0) {
+		SRAM_setSize(adapter, 0x20000);
+		SRAM_init(adapter);
+		WriteRegDW(adapter, 0x208, tmp);
+
+		dprintk("%s: sram size = 128K\n", __FUNCTION__);
+
+		return 128;
+	}
+
+	if (SRAM_testLocation(adapter, 0x00000, 0x10000) != 0) {
+		SRAM_setSize(adapter, 0x00000);
+		SRAM_init(adapter);
+		WriteRegDW(adapter, 0x208, tmp);
+
+		dprintk("%s: sram size = 64K\n", __FUNCTION__);
+
+		return 64;
+	}
+
+	if (SRAM_testLocation(adapter, 0x10000, 0x00000) != 0) {
+		SRAM_setSize(adapter, 0x10000);
+		SRAM_init(adapter);
+		WriteRegDW(adapter, 0x208, tmp);
+
+		dprintk("%s: sram size = 32K\n", __FUNCTION__);
+
+		return 32;
+	}
+
+	SRAM_setSize(adapter, 0x10000);
+	SRAM_init(adapter);
+	WriteRegDW(adapter, 0x208, tmp);
+
+	dprintk("%s: SRAM detection failed. Set to 32K \n", __FUNCTION__);
+
+	return 0;
+}
+
+void SLL_detectSramSize(struct adapter *adapter)
+{
+	SramDetectForFlex2(adapter);
+}
+
+/////////////////////////////////////////////////////////////////////
+//      EEPROM (Skystar2 has one "24LC08B" chip on board)
+////////////////////////////////////////////////////////////////////
+
+int EEPROM_write(struct adapter *adapter, u16 addr, u8 * buf, u16 len)
+{
+	return FLEXI2C_write(adapter, 0x20000000, 0x50, addr, buf, len);
+}
+
+int EEPROM_read(struct adapter *adapter, u16 addr, u8 * buf, u16 len)
+{
+	return FLEXI2C_read(adapter, 0x20000000, 0x50, addr, buf, len);
+}
+
+u8 calc_LRC(u8 * buf, u32 len)
+{
+	u32 i;
+	u8 sum;
+
+	sum = 0;
+
+	for (i = 0; i < len; i++)
+		sum = sum ^ buf[i];
+
+	return sum;
+}
+
+int EEPROM_LRC_read(struct adapter *adapter, u32 addr, u32 len, u8 * buf, u32 retries)
+{
+	int i;
+
+	for (i = 0; i < retries; i++) {
+		if (EEPROM_read(adapter, addr, buf, len) == len) {
+			if (calc_LRC(buf, len - 1) == buf[len - 1])
+				return 1;
+		}
+	}
+
+	return 0;
+}
+
+int EEPROM_LRC_write(struct adapter *adapter, u32 addr, u32 len, u8 * wbuf, u8 * rbuf, u32 retries)
+{
+	int i;
+
+	for (i = 0; i < retries; i++) {
+		if (EEPROM_write(adapter, addr, wbuf, len) == len) {
+			if (EEPROM_LRC_read(adapter, addr, len, rbuf, retries) == 1)
+				return 1;
+		}
+	}
+
+	return 0;
+}
+
+/////////////////////////////////////////////////////////////////////
+// These functions could be called from the initialization routine 
+// to unlock SkyStar2 cards, locked by "Europe On Line".
+//      
+// in cards from "Europe On Line" the key is:
+//
+//      u8 key[20] = {
+//           0xB2, 0x01, 0x00, 0x00,
+//           0x00, 0x00, 0x00, 0x00,
+//           0x00, 0x00, 0x00, 0x00,
+//           0x00, 0x00, 0x00, 0x00,
+//      };
+//
+//      LRC = 0xB3;
+//
+// in unlocked cards the key is:
+//
+//      u8 key[20] = {
+//           0xB2, 0x00, 0x00, 0x00,
+//           0x00, 0x00, 0x00, 0x00,
+//           0x00, 0x00, 0x00, 0x00,
+//           0x00, 0x00, 0x00, 0x00,
+//      };
+//
+//     LRC = 0xB2;
+/////////////////////////////////////////////////////////////////////
+
+int EEPROM_writeKey(struct adapter *adapter, u8 * key, u32 len)
+{
+	u8 rbuf[20];
+	u8 wbuf[20];
+
+	if (len != 16)
+		return 0;
+
+	memcpy(wbuf, key, len);
+
+	wbuf[16] = 0;
+	wbuf[17] = 0;
+	wbuf[18] = 0;
+	wbuf[19] = calc_LRC(wbuf, 19);
+
+	return EEPROM_LRC_write(adapter, 0x3E4, 20, wbuf, rbuf, 4);
+}
+
+int EEPROM_readKey(struct adapter *adapter, u8 * key, u32 len)
+{
+	u8 buf[20];
+
+	if (len != 16)
+		return 0;
+
+	if (EEPROM_LRC_read(adapter, 0x3E4, 20, buf, 4) == 0)
+		return 0;
+
+	memcpy(key, buf, len);
+
+	return 1;
+}
+
+int EEPROM_getMacAddr(struct adapter *adapter, char type, u8 * mac)
+{
+	u8 tmp[8];
+
+	if (EEPROM_LRC_read(adapter, 0x3F8, 8, tmp, 4) != 0) {
+		if (type != 0) {
+			mac[0] = tmp[0];
+			mac[1] = tmp[1];
+			mac[2] = tmp[2];
+			mac[3] = 0xFE;
+			mac[4] = 0xFF;
+			mac[5] = tmp[3];
+			mac[6] = tmp[4];
+			mac[7] = tmp[5];
+
+		} else {
+
+			mac[0] = tmp[0];
+			mac[1] = tmp[1];
+			mac[2] = tmp[2];
+			mac[3] = tmp[3];
+			mac[4] = tmp[4];
+			mac[5] = tmp[5];
+		}
+
+		return 1;
+
+	} else {
+
+		if (type == 0) {
+			memset(mac, 0, 6);
+
+		} else {
+
+			memset(mac, 0, 8);
+		}
+
+		return 0;
+	}
+}
+
+char EEPROM_setMacAddr(struct adapter *adapter, char type, u8 * mac)
+{
+	u8 tmp[8];
+
+	if (type != 0) {
+		tmp[0] = mac[0];
+		tmp[1] = mac[1];
+		tmp[2] = mac[2];
+		tmp[3] = mac[5];
+		tmp[4] = mac[6];
+		tmp[5] = mac[7];
+
+	} else {
+
+		tmp[0] = mac[0];
+		tmp[1] = mac[1];
+		tmp[2] = mac[2];
+		tmp[3] = mac[3];
+		tmp[4] = mac[4];
+		tmp[5] = mac[5];
+	}
+
+	tmp[6] = 0;
+	tmp[7] = calc_LRC(tmp, 7);
+
+	if (EEPROM_write(adapter, 0x3F8, tmp, 8) == 8)
+		return 1;
+
+	return 0;
+}
+
+/////////////////////////////////////////////////////////////////////
+//                      PID filter
+/////////////////////////////////////////////////////////////////////
+
+void FilterEnableStream1Filter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000001, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000001);
+	}
+}
+
+void FilterEnableStream2Filter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000002, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000002);
+	}
+}
+
+void FilterEnablePcrFilter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000004, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000004);
+	}
+}
+
+void FilterEnablePmtFilter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000008, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000008);
+	}
+}
+
+void FilterEnableEmmFilter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000010, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000010);
+	}
+}
+
+void FilterEnableEcmFilter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000020, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000020);
+	}
+}
+
+void FilterEnableNullFilter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000040, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000040);
+	}
+}
+
+void FilterEnableMaskFilter(struct adapter *adapter, u32 op)
+{
+	dprintk("%s: op=%x\n", __FUNCTION__, op);
+
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000080, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000080);
+	}
+}
+
+
+void CtrlEnableMAC(struct adapter *adapter, u32 op)
+{
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00004000, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00004000);
+	}
+}
+
+int CASetMacDstAddrFilter(struct adapter *adapter, u8 * mac)
+{
+	u32 tmp1, tmp2;
+
+	tmp1 = (mac[3] << 0x18) | (mac[2] << 0x10) | (mac[1] << 0x08) | mac[0];
+	tmp2 = (mac[5] << 0x08) | mac[4];
+
+	WriteRegDW(adapter, 0x418, tmp1);
+	WriteRegDW(adapter, 0x41C, tmp2);
+
+	return 0;
+}
+
+void SetIgnoreMACFilter(struct adapter *adapter, u8 op)
+{
+	if (op != 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00004000, 0);
+
+		adapter->mac_filter = 1;
+
+	} else {
+
+		if (adapter->mac_filter != 0) {
+			adapter->mac_filter = 0;
+
+			WriteRegOp(adapter, 0x208, 1, 0, 0x00004000);
+		}
+	}
+}
+
+void CheckNullFilterEnable(struct adapter *adapter)
+{
+	FilterEnableNullFilter(adapter, 1);
+	FilterEnableMaskFilter(adapter, 1);
+}
+
+void InitPIDsInfo(struct adapter *adapter)
+{
+	int i;
+
+	for (i = 0; i < 0x27; i++)
+		adapter->pids[i] = 0x1FFF;
+}
+
+u32 CheckPID(struct adapter *adapter, u16 pid)
+{
+	u32 i;
+
+	if (pid == 0x1FFF)
+		return 0;
+
+	for (i = 0; i < 0x27; i++) {
+		if (adapter->pids[i] == pid)
+			return 1;
+	}
+
+	return 0;
+}
+
+u32 PidSetGroupPID(struct adapter * adapter, u32 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+
+	value = (pid & 0x3FFF) | (ReadRegDW(adapter, 0x30C) & 0xFFFF0000);
+
+	WriteRegDW(adapter, 0x30C, value);
+
+	return value;
+}
+
+u32 PidSetGroupMASK(struct adapter * adapter, u32 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+
+	value = ((pid & 0x3FFF) << 0x10) | (ReadRegDW(adapter, 0x30C) & 0xFFFF);
+
+	WriteRegDW(adapter, 0x30C, value);
+
+	return value;
+}
+
+u32 PidSetStream1PID(struct adapter * adapter, u32 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+
+	value = (pid & 0x3FFF) | (ReadRegDW(adapter, 0x300) & 0xFFFFC000);
+
+	WriteRegDW(adapter, 0x300, value);
+
+	return value;
+}
+
+u32 PidSetStream2PID(struct adapter * adapter, u32 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+
+	value = ((pid & 0x3FFF) << 0x10) | (ReadRegDW(adapter, 0x300) & 0xFFFF);
+
+	WriteRegDW(adapter, 0x300, value);
+
+	return value;
+}
+
+u32 PidSetPcrPID(struct adapter * adapter, u32 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+
+	value = (pid & 0x3FFF) | (ReadRegDW(adapter, 0x304) & 0xFFFFC000);
+
+	WriteRegDW(adapter, 0x304, value);
+
+	return value;
+}
+
+u32 PidSetPmtPID(struct adapter * adapter, u32 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+
+	value = ((pid & 0x3FFF) << 0x10) | (ReadRegDW(adapter, 0x304) & 0x3FFF);
+
+	WriteRegDW(adapter, 0x304, value);
+
+	return value;
+}
+
+u32 PidSetEmmPID(struct adapter * adapter, u32 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+
+	value = (pid & 0xFFFF) | (ReadRegDW(adapter, 0x308) & 0xFFFF0000);
+
+	WriteRegDW(adapter, 0x308, value);
+
+	return value;
+}
+
+u32 PidSetEcmPID(struct adapter * adapter, u32 pid)
+{
+	u32 value;
+
+	dprintk("%s: pid=%x\n", __FUNCTION__, pid);
+
+	value = (pid << 0x10) | (ReadRegDW(adapter, 0x308) & 0xFFFF);
+
+	WriteRegDW(adapter, 0x308, value);
+
+	return value;
+}
+
+u32 PidGetStream1PID(struct adapter * adapter)
+{
+	return ReadRegDW(adapter, 0x300) & 0x0000FFFF;
+}
+
+u32 PidGetStream2PID(struct adapter * adapter)
+{
+	return ReadRegDW(adapter, 0x300) >> 0x10;
+}
+
+u32 PidGetPcrPID(struct adapter * adapter)
+{
+	return ReadRegDW(adapter, 0x304) & 0x0000FFFF;
+}
+
+u32 PidGetPmtPID(struct adapter * adapter)
+{
+	return ReadRegDW(adapter, 0x304) >> 0x10;
+}
+
+u32 PidGetEmmPID(struct adapter * adapter)
+{
+	return ReadRegDW(adapter, 0x308) & 0x0000FFFF;
+}
+
+u32 PidGetEcmPID(struct adapter * adapter)
+{
+	return ReadRegDW(adapter, 0x308) >> 0x10;
+}
+
+u32 PidGetGroupPID(struct adapter * adapter)
+{
+	return ReadRegDW(adapter, 0x30C) & 0x0000FFFF;
+}
+
+u32 PidGetGroupMASK(struct adapter * adapter)
+{
+	return ReadRegDW(adapter, 0x30C) >> 0x10;
+}
+
+void ResetHardwarePIDFilter(struct adapter *adapter)
+{
+	PidSetStream1PID(adapter, 0x1FFF);
+
+	PidSetStream2PID(adapter, 0x1FFF);
+	FilterEnableStream2Filter(adapter, 0);
+
+	PidSetPcrPID(adapter, 0x1FFF);
+	FilterEnablePcrFilter(adapter, 0);
+
+	PidSetPmtPID(adapter, 0x1FFF);
+	FilterEnablePmtFilter(adapter, 0);
+
+	PidSetEcmPID(adapter, 0x1FFF);
+	FilterEnableEcmFilter(adapter, 0);
+
+	PidSetEmmPID(adapter, 0x1FFF);
+	FilterEnableEmmFilter(adapter, 0);
+}
+
+void OpenWholeBandwidth(struct adapter *adapter)
+{
+	PidSetGroupPID(adapter, 0);
+
+	PidSetGroupMASK(adapter, 0);
+
+	FilterEnableMaskFilter(adapter, 1);
+}
+
+int AddHwPID(struct adapter *adapter, u32 pid)
+{
+	dprintk("%s: pid=%d\n", __FUNCTION__, pid);
+
+	if (pid <= 0x1F)
+		return 1;
+
+	if ((PidGetGroupMASK(adapter) == 0) && (PidGetGroupPID(adapter) == 0))
+		return 0;
+
+	if ((PidGetStream1PID(adapter) & 0x1FFF) == 0x1FFF) {
+		PidSetStream1PID(adapter, pid & 0xFFFF);
+
+		FilterEnableStream1Filter(adapter, 1);
+
+		return 1;
+	}
+
+	if ((PidGetStream2PID(adapter) & 0x1FFF) == 0x1FFF) {
+		PidSetStream2PID(adapter, (pid & 0xFFFF));
+
+		FilterEnableStream2Filter(adapter, 1);
+
+		return 1;
+	}
+
+	if ((PidGetPcrPID(adapter) & 0x1FFF) == 0x1FFF) {
+		PidSetPcrPID(adapter, (pid & 0xFFFF));
+
+		FilterEnablePcrFilter(adapter, 1);
+
+		return 1;
+	}
+
+	if ((PidGetPmtPID(adapter) & 0x1FFF) == 0x1FFF) {
+		PidSetPmtPID(adapter, (pid & 0xFFFF));
+
+		FilterEnablePmtFilter(adapter, 1);
+
+		return 1;
+	}
+
+	if ((PidGetEmmPID(adapter) & 0x1FFF) == 0x1FFF) {
+		PidSetEmmPID(adapter, (pid & 0xFFFF));
+
+		FilterEnableEmmFilter(adapter, 1);
+
+		return 1;
+	}
+
+	if ((PidGetEcmPID(adapter) & 0x1FFF) == 0x1FFF) {
+		PidSetEcmPID(adapter, (pid & 0xFFFF));
+
+		FilterEnableEcmFilter(adapter, 1);
+
+		return 1;
+	}
+
+	return -1;
+}
+
+int RemoveHwPID(struct adapter *adapter, u32 pid)
+{
+	dprintk("%s: pid=%d\n", __FUNCTION__, pid);
+
+	if (pid <= 0x1F)
+		return 1;
+
+	if ((PidGetStream1PID(adapter) & 0x1FFF) == pid) {
+		PidSetStream1PID(adapter, 0x1FFF);
+
+		return 1;
+	}
+
+	if ((PidGetStream2PID(adapter) & 0x1FFF) == pid) {
+		PidSetStream2PID(adapter, 0x1FFF);
+
+		FilterEnableStream2Filter(adapter, 0);
+
+		return 1;
+	}
+
+	if ((PidGetPcrPID(adapter) & 0x1FFF) == pid) {
+		PidSetPcrPID(adapter, 0x1FFF);
+
+		FilterEnablePcrFilter(adapter, 0);
+
+		return 1;
+	}
+
+	if ((PidGetPmtPID(adapter) & 0x1FFF) == pid) {
+		PidSetPmtPID(adapter, 0x1FFF);
+
+		FilterEnablePmtFilter(adapter, 0);
+
+		return 1;
+	}
+
+	if ((PidGetEmmPID(adapter) & 0x1FFF) == pid) {
+		PidSetEmmPID(adapter, 0x1FFF);
+
+		FilterEnableEmmFilter(adapter, 0);
+
+		return 1;
+	}
+
+	if ((PidGetEcmPID(adapter) & 0x1FFF) == pid) {
+		PidSetEcmPID(adapter, 0x1FFF);
+
+		FilterEnableEcmFilter(adapter, 0);
+
+		return 1;
+	}
+
+	return -1;
+}
+
+int AddPID(struct adapter *adapter, u32 pid)
+{
+	int i;
+
+	dprintk("%s: pid=%d\n", __FUNCTION__, pid);
+
+	if (pid > 0x1FFE)
+		return -1;
+
+	if (CheckPID(adapter, pid) == 1)
+		return 1;
+
+	for (i = 0; i < 0x27; i++) {
+		if (adapter->pids[i] == 0x1FFF)	// find free pid filter
+		{
+			adapter->pids[i] = pid;
+
+			if (AddHwPID(adapter, pid) < 0)
+				OpenWholeBandwidth(adapter);
+
+			return 1;
+		}
+	}
+
+	return -1;
+}
+
+int RemovePID(struct adapter *adapter, u32 pid)
+{
+	u32 i;
+
+	dprintk("%s: pid=%d\n", __FUNCTION__, pid);
+
+	if (pid > 0x1FFE)
+		return -1;
+
+	for (i = 0; i < 0x27; i++) {
+		if (adapter->pids[i] == pid) {
+			adapter->pids[i] = 0x1FFF;
+
+			RemoveHwPID(adapter, pid);
+
+			return 1;
+		}
+	}
+
+	return -1;
+}
+
+/////////////////////////////////////////////////////////////////////
+//                      DMA & IRQ
+/////////////////////////////////////////////////////////////////////
+
+void CtrlEnableSmc(struct adapter *adapter, u32 op)
+{
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00000800, 0);
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00000800);
+	}
+}
+
+u32 DmaEnableDisableIrq(struct adapter *adapter, u32 flag1, u32 flag2, u32 flag3)
+{
+	adapter->dma_ctrl = adapter->dma_ctrl & 0x000F0000;
+
+	if (flag1 == 0) {
+		if (flag2 == 0)
+			adapter->dma_ctrl = adapter->dma_ctrl & ~0x00010000;
+		else
+			adapter->dma_ctrl = adapter->dma_ctrl | 0x00010000;
+
+		if (flag3 == 0)
+			adapter->dma_ctrl = adapter->dma_ctrl & ~0x00020000;
+		else
+			adapter->dma_ctrl = adapter->dma_ctrl | 0x00020000;
+
+	} else {
+
+		if (flag2 == 0)
+			adapter->dma_ctrl = adapter->dma_ctrl & ~0x00040000;
+		else
+			adapter->dma_ctrl = adapter->dma_ctrl | 0x00040000;
+
+		if (flag3 == 0)
+			adapter->dma_ctrl = adapter->dma_ctrl & ~0x00080000;
+		else
+			adapter->dma_ctrl = adapter->dma_ctrl | 0x00080000;
+	}
+
+	return adapter->dma_ctrl;
+}
+
+u32 IrqDmaEnableDisableIrq(struct adapter * adapter, u32 op)
+{
+	u32 value;
+
+	value = ReadRegDW(adapter, 0x208) & 0xFFF0FFFF;
+
+	if (op != 0)
+		value = value | (adapter->dma_ctrl & 0x000F0000);
+
+	WriteRegDW(adapter, 0x208, value);
+
+	return value;
+}
+
+///////////////////////////////////////////////////////////////////////
+//
+// FlexCopII has 2 dma channels. DMA1 is used to transfer TS data to
+// system memory.
+//
+// The DMA1 buffer is divided in 2 subbuffers of equal size.
+// FlexCopII will transfer TS data to one subbuffer, signal an interrupt
+// when the subbuffer is full and continue fillig the second subbuffer.
+//
+// For DMA1:
+//      subbuffer size in 32-bit words is stored in the first 24 bits of
+//      register 0x004. The last 8 bits of register 0x004 contain the number
+//      of subbuffers.
+//      
+//      the first 30 bits of register 0x000 contain the address of the first
+//      subbuffer. The last 2 bits contain 0, when dma1 is disabled and 1,
+//      when dma1 is enabled.
+//
+//      the first 30 bits of register 0x00C contain the address of the second
+//      subbuffer. the last 2 bits contain 1.
+//
+//      register 0x008 will contain the address of the subbuffer that was filled
+//      with TS data, when FlexCopII will generate an interrupt.
+//
+// For DMA2:
+//      subbuffer size in 32-bit words is stored in the first 24 bits of
+//      register 0x014. The last 8 bits of register 0x014 contain the number
+//      of subbuffers.
+//      
+//      the first 30 bits of register 0x010 contain the address of the first
+//      subbuffer.  The last 2 bits contain 0, when dma1 is disabled and 1,
+//      when dma1 is enabled.
+//
+//      the first 30 bits of register 0x01C contain the address of the second
+//      subbuffer. the last 2 bits contain 1.
+//
+//      register 0x018 contains the address of the subbuffer that was filled
+//      with TS data, when FlexCopII generates an interrupt.
+//
+///////////////////////////////////////////////////////////////////////
+
+int DmaInitDMA(struct adapter *adapter, u32 dma_channel)
+{
+	u32 subbuffers, subbufsize, subbuf0, subbuf1;
+
+	if (dma_channel == 0) {
+		dprintk("%s: Initializing DMA1 channel\n", __FUNCTION__);
+
+		subbuffers = 2;
+
+		subbufsize = (((adapter->DmaQ1.buffer_size / 2) / 4) << 8) | subbuffers;
+
+		subbuf0 = adapter->DmaQ1.bus_addr & 0xFFFFFFFC;
+
+		subbuf1 = ((adapter->DmaQ1.bus_addr + adapter->DmaQ1.buffer_size / 2) & 0xFFFFFFFC) | 1;
+
+		dprintk("%s: first subbuffer address = 0x%x\n", __FUNCTION__, subbuf0);
+		udelay(1000);
+		WriteRegDW(adapter, 0x000, subbuf0);
+
+		dprintk("%s: subbuffer size = 0x%x\n", __FUNCTION__, (subbufsize >> 8) * 4);
+		udelay(1000);
+		WriteRegDW(adapter, 0x004, subbufsize);
+
+		dprintk("%s: second subbuffer address = 0x%x\n", __FUNCTION__, subbuf1);
+		udelay(1000);
+		WriteRegDW(adapter, 0x00C, subbuf1);
+
+		dprintk("%s: counter = 0x%x\n", __FUNCTION__, adapter->DmaQ1.bus_addr & 0xFFFFFFFC);
+		WriteRegDW(adapter, 0x008, adapter->DmaQ1.bus_addr & 0xFFFFFFFC);
+		udelay(1000);
+
+		if (subbuffers == 0)
+			DmaEnableDisableIrq(adapter, 0, 1, 0);
+		else
+			DmaEnableDisableIrq(adapter, 0, 1, 1);
+
+		IrqDmaEnableDisableIrq(adapter, 1);
+
+		SRAMSetMediaDest(adapter, 1);
+		SRAMSetNetDest(adapter, 1);
+		SRAMSetCaiDest(adapter, 2);
+		SRAMSetCaoDest(adapter, 2);
+	}
+
+	if (dma_channel == 1) {
+		dprintk("%s: Initializing DMA2 channel\n", __FUNCTION__);
+
+		subbuffers = 2;
+
+		subbufsize = (((adapter->DmaQ2.buffer_size / 2) / 4) << 8) | subbuffers;
+
+		subbuf0 = adapter->DmaQ2.bus_addr & 0xFFFFFFFC;
+
+		subbuf1 = ((adapter->DmaQ2.bus_addr + adapter->DmaQ2.buffer_size / 2) & 0xFFFFFFFC) | 1;
+
+		dprintk("%s: first subbuffer address = 0x%x\n", __FUNCTION__, subbuf0);
+		udelay(1000);
+		WriteRegDW(adapter, 0x010, subbuf0);
+
+		dprintk("%s: subbuffer size = 0x%x\n", __FUNCTION__, (subbufsize >> 8) * 4);
+		udelay(1000);
+		WriteRegDW(adapter, 0x014, subbufsize);
+
+		dprintk("%s: second buffer address = 0x%x\n", __FUNCTION__, subbuf1);
+		udelay(1000);
+		WriteRegDW(adapter, 0x01C, subbuf1);
+
+		SRAMSetCaiDest(adapter, 2);
+	}
+
+	return 0;
+}
+
+void CtrlEnableReceiveData(struct adapter *adapter, u32 op)
+{
+	if (op == 0) {
+		WriteRegOp(adapter, 0x208, 2, ~0x00008000, 0);
+
+		adapter->dma_status = adapter->dma_status & ~0x00000004;
+
+	} else {
+
+		WriteRegOp(adapter, 0x208, 1, 0, 0x00008000);
+
+		adapter->dma_status = adapter->dma_status | 0x00000004;
+	}
+}
+
+///////////////////////////////////////////////////////////////////////////////
+// bit 0 of dma_mask is set to 1 if dma1 channel has to be enabled/disabled
+// bit 1 of dma_mask is set to 1 if dma2 channel has to be enabled/disabled
+
+void DmaStartStop0x2102(struct adapter *adapter, u32 dma_mask, u32 start_stop)
+{
+	u32 dma_enable, dma1_enable, dma2_enable;
+
+	dprintk("%s: dma_mask=%x\n", __FUNCTION__, dma_mask);
+
+	if (start_stop == 1) {
+		dprintk("%s: starting dma\n", __FUNCTION__);
+
+		dma1_enable = 0;
+		dma2_enable = 0;
+
+		if (((dma_mask & 1) != 0) && ((adapter->dma_status & 1) == 0) && (adapter->DmaQ1.bus_addr != 0)) {
+			adapter->dma_status = adapter->dma_status | 1;
+			dma1_enable = 1;
+		}
+
+		if (((dma_mask & 2) != 0) && ((adapter->dma_status & 2) == 0) && (adapter->DmaQ2.bus_addr != 0)) {
+			adapter->dma_status = adapter->dma_status | 2;
+			dma2_enable = 1;
+		}
+		// enable dma1 and dma2
+		if ((dma1_enable == 1) && (dma2_enable == 1)) {
+			WriteRegDW(adapter, 0x000, adapter->DmaQ1.bus_addr | 1);
+			WriteRegDW(adapter, 0x00C, (adapter->DmaQ1.bus_addr + adapter->DmaQ1.buffer_size / 2) | 1);
+			WriteRegDW(adapter, 0x010, adapter->DmaQ2.bus_addr | 1);
+
+			CtrlEnableReceiveData(adapter, 1);
+
+			return;
+		}
+		// enable dma1
+		if ((dma1_enable == 1) && (dma2_enable == 0)) {
+			WriteRegDW(adapter, 0x000, adapter->DmaQ1.bus_addr | 1);
+			WriteRegDW(adapter, 0x00C, (adapter->DmaQ1.bus_addr + adapter->DmaQ1.buffer_size / 2) | 1);
+
+			CtrlEnableReceiveData(adapter, 1);
+
+			return;
+		}
+		// enable dma2
+		if ((dma1_enable == 0) && (dma2_enable == 1)) {
+			WriteRegDW(adapter, 0x010, adapter->DmaQ2.bus_addr | 1);
+
+			CtrlEnableReceiveData(adapter, 1);
+
+			return;
+		}
+		// start dma
+		if ((dma1_enable == 0) && (dma2_enable == 0)) {
+			CtrlEnableReceiveData(adapter, 1);
+
+			return;
+		}
+
+	} else {
+
+		dprintk("%s: stoping dma\n", __FUNCTION__);
+
+		dma_enable = adapter->dma_status & 0x00000003;
+
+		if (((dma_mask & 1) != 0) && ((adapter->dma_status & 1) != 0)) {
+			dma_enable = dma_enable & 0xFFFFFFFE;
+		}
+
+		if (((dma_mask & 2) != 0) && ((adapter->dma_status & 2) != 0)) {
+			dma_enable = dma_enable & 0xFFFFFFFD;
+		}
+		//stop dma
+		if ((dma_enable == 0) && ((adapter->dma_status & 4) != 0)) {
+			CtrlEnableReceiveData(adapter, 0);
+
+			udelay(3000);
+		}
+		//disable dma1
+		if (((dma_mask & 1) != 0) && ((adapter->dma_status & 1) != 0) && (adapter->DmaQ1.bus_addr != 0)) {
+			WriteRegDW(adapter, 0x000, adapter->DmaQ1.bus_addr);
+			WriteRegDW(adapter, 0x00C, (adapter->DmaQ1.bus_addr + adapter->DmaQ1.buffer_size / 2) | 1);
+
+			adapter->dma_status = adapter->dma_status & ~0x00000001;
+		}
+		//disable dma2
+		if (((dma_mask & 2) != 0) && ((adapter->dma_status & 2) != 0) && (adapter->DmaQ2.bus_addr != 0)) {
+			WriteRegDW(adapter, 0x010, adapter->DmaQ2.bus_addr);
+
+			adapter->dma_status = adapter->dma_status & ~0x00000002;
+		}
+	}
+}
+
+void OpenStream(struct adapter *adapter, u32 pid)
+{
+	u32 dma_mask;
+
+	if (adapter->capturing == 0)
+		adapter->capturing = 1;
+
+	FilterEnableMaskFilter(adapter, 1);
+
+	AddPID(adapter, pid);
+
+	dprintk("%s: adapter->dma_status=%x\n", __FUNCTION__, adapter->dma_status);
+
+	if ((adapter->dma_status & 7) != 7) {
+		dma_mask = 0;
+
+		if (((adapter->dma_status & 0x10000000) != 0) && ((adapter->dma_status & 1) == 0)) {
+			dma_mask = dma_mask | 1;
+
+			adapter->DmaQ1.head = 0;
+			adapter->DmaQ1.tail = 0;
+
+			memset(adapter->DmaQ1.buffer, 0, adapter->DmaQ1.buffer_size);
+		}
+
+		if (((adapter->dma_status & 0x20000000) != 0) && ((adapter->dma_status & 2) == 0)) {
+			dma_mask = dma_mask | 2;
+
+			adapter->DmaQ2.head = 0;
+			adapter->DmaQ2.tail = 0;
+		}
+
+		if (dma_mask != 0) {
+			IrqDmaEnableDisableIrq(adapter, 1);
+
+			DmaStartStop0x2102(adapter, dma_mask, 1);
+		}
+	}
+}
+
+void CloseStream(struct adapter *adapter, u32 pid)
+{
+	u32 dma_mask;
+
+	if (adapter->capturing != 0)
+		adapter->capturing = 0;
+
+	dprintk("%s: dma_status=%x\n", __FUNCTION__, adapter->dma_status);
+
+	dma_mask = 0;
+
+	if ((adapter->dma_status & 1) != 0)
+		dma_mask = dma_mask | 0x00000001;
+	if ((adapter->dma_status & 2) != 0)
+		dma_mask = dma_mask | 0x00000002;
+
+	if (dma_mask != 0) {
+		DmaStartStop0x2102(adapter, dma_mask, 0);
+	}
+
+	RemovePID(adapter, pid);
+}
+
+u32 InterruptServiceDMA1(struct adapter *adapter)
+{
+	struct dvb_demux *dvbdmx = &adapter->demux;
+	struct packet_header_t packet_header;
+
+	int nCurDmaCounter;
+	u32 nNumBytesParsed;
+	u32 nNumNewBytesTransferred;
+	u32 dwDefaultPacketSize = 188;
+	u8 gbTmpBuffer[188];
+	u8 *pbDMABufCurPos;
+
+	nCurDmaCounter = readl(adapter->io_mem + 0x008) - adapter->DmaQ1.bus_addr;
+	nCurDmaCounter = (nCurDmaCounter / dwDefaultPacketSize) * dwDefaultPacketSize;
+
+	if ((nCurDmaCounter < 0) || (nCurDmaCounter > adapter->DmaQ1.buffer_size)) {
+		dprintk("%s: dma counter outside dma buffer\n", __FUNCTION__);
+
+		return 1;
+	}
+
+	adapter->DmaQ1.head = nCurDmaCounter;
+
+	if (adapter->DmaQ1.tail <= nCurDmaCounter) {
+		nNumNewBytesTransferred = nCurDmaCounter - adapter->DmaQ1.tail;
+
+	} else {
+
+		nNumNewBytesTransferred = (adapter->DmaQ1.buffer_size - adapter->DmaQ1.tail) + nCurDmaCounter;
+	}
+
+//  dprintk("%s: nCurDmaCounter   = %d\n" , __FUNCTION__, nCurDmaCounter);
+//  dprintk("%s: DmaQ1.tail       = %d\n" , __FUNCTION__, adapter->DmaQ1.tail):
+//  dprintk("%s: BytesTransferred = %d\n" , __FUNCTION__, nNumNewBytesTransferred);
+
+	if (nNumNewBytesTransferred < dwDefaultPacketSize)
+		return 0;
+
+	nNumBytesParsed = 0;
+
+	while (nNumBytesParsed < nNumNewBytesTransferred) {
+		pbDMABufCurPos = adapter->DmaQ1.buffer + adapter->DmaQ1.tail;
+
+		if (adapter->DmaQ1.buffer + adapter->DmaQ1.buffer_size < adapter->DmaQ1.buffer + adapter->DmaQ1.tail + 188) {
+			memcpy(gbTmpBuffer, adapter->DmaQ1.buffer + adapter->DmaQ1.tail, adapter->DmaQ1.buffer_size - adapter->DmaQ1.tail);
+			memcpy(gbTmpBuffer + (adapter->DmaQ1.buffer_size - adapter->DmaQ1.tail), adapter->DmaQ1.buffer, (188 - (adapter->DmaQ1.buffer_size - adapter->DmaQ1.tail)));
+
+			pbDMABufCurPos = gbTmpBuffer;
+		}
+
+		if (adapter->capturing != 0) {
+			u32 *dq = (u32 *) pbDMABufCurPos;
+
+			packet_header.sync_byte = *dq & 0x000000FF;
+			packet_header.transport_error_indicator = *dq & 0x00008000;
+			packet_header.payload_unit_start_indicator = *dq & 0x00004000;
+			packet_header.transport_priority = *dq & 0x00002000;
+			packet_header.pid = ((*dq & 0x00FF0000) >> 0x10) | (*dq & 0x00001F00);
+			packet_header.transport_scrambling_control = *dq >> 0x1E;
+			packet_header.adaptation_field_control = (*dq & 0x30000000) >> 0x1C;
+			packet_header.continuity_counter = (*dq & 0x0F000000) >> 0x18;
+
+			if ((packet_header.sync_byte == 0x47) && (packet_header.transport_error_indicator == 0) && (packet_header.pid != 0x1FFF)) {
+				if (CheckPID(adapter, packet_header.pid & 0x0000FFFF) != 0) {
+					dvb_dmx_swfilter_packets(dvbdmx, pbDMABufCurPos, dwDefaultPacketSize / 188);
+
+				} else {
+
+//                  dprintk("%s: pid=%x\n", __FUNCTION__, packet_header.pid);
+				}
+			}
+		}
+
+		nNumBytesParsed = nNumBytesParsed + dwDefaultPacketSize;
+
+		adapter->DmaQ1.tail = adapter->DmaQ1.tail + dwDefaultPacketSize;
+
+		if (adapter->DmaQ1.tail >= adapter->DmaQ1.buffer_size)
+			adapter->DmaQ1.tail = adapter->DmaQ1.tail - adapter->DmaQ1.buffer_size;
+	};
+
+	return 1;
+}
+
+void InterruptServiceDMA2(struct adapter *adapter)
+{
+	printk("%s:\n", __FUNCTION__);
+}
+
+void isr(int irq, void *dev_id, struct pt_regs *regs)
+{
+	struct adapter *tmp = dev_id;
+
+	u32 value;
+
+//  dprintk("%s:\n", __FUNCTION__);
+
+	spin_lock_irq(&tmp->lock);
+
+	while (((value = ReadRegDW(tmp, 0x20C)) & 0x0F) != 0) {
+		if ((value & 0x03) != 0)
+			InterruptServiceDMA1(tmp);
+		if ((value & 0x0C) != 0)
+			InterruptServiceDMA2(tmp);
+	}
+
+	spin_unlock_irq(&tmp->lock);
+}
+
+
+void InitDmaQueue(struct adapter *adapter)
+{
+	dma_addr_t dma_addr;
+
+	if (adapter->DmaQ1.buffer != 0)
+		return;
+
+	adapter->DmaQ1.head = 0;
+	adapter->DmaQ1.tail = 0;
+	adapter->DmaQ1.buffer = 0;
+
+	adapter->DmaQ1.buffer = pci_alloc_consistent(adapter->pdev, SizeOfBufDMA1 + 0x80, &dma_addr);
+
+	if (adapter->DmaQ1.buffer != 0) {
+		memset(adapter->DmaQ1.buffer, 0, SizeOfBufDMA1);
+
+		adapter->DmaQ1.bus_addr = dma_addr;
+		adapter->DmaQ1.buffer_size = SizeOfBufDMA1;
+
+		DmaInitDMA(adapter, 0);
+
+		adapter->dma_status = adapter->dma_status | 0x10000000;
+
+		dprintk("%s: allocated dma buffer at 0x%x, length=%d\n", __FUNCTION__, (int) adapter->DmaQ1.buffer, SizeOfBufDMA1);
+
+	} else {
+
+		adapter->dma_status = adapter->dma_status & ~0x10000000;
+	}
+
+	if (adapter->DmaQ2.buffer != 0)
+		return;
+
+	adapter->DmaQ2.head = 0;
+	adapter->DmaQ2.tail = 0;
+	adapter->DmaQ2.buffer = 0;
+
+	adapter->DmaQ2.buffer = pci_alloc_consistent(adapter->pdev, SizeOfBufDMA2 + 0x80, &dma_addr);
+
+	if (adapter->DmaQ2.buffer != 0) {
+		memset(adapter->DmaQ2.buffer, 0, SizeOfBufDMA2);
+
+		adapter->DmaQ2.bus_addr = dma_addr;
+		adapter->DmaQ2.buffer_size = SizeOfBufDMA2;
+
+		DmaInitDMA(adapter, 1);
+
+		adapter->dma_status = adapter->dma_status | 0x20000000;
+
+		dprintk("%s: allocated dma buffer at 0x%x, length=%d\n", __FUNCTION__, (int) adapter->DmaQ2.buffer, (int) SizeOfBufDMA2);
+
+	} else {
+
+		adapter->dma_status = adapter->dma_status & ~0x20000000;
+	}
+}
+
+void FreeDmaQueue(struct adapter *adapter)
+{
+	if (adapter->DmaQ1.buffer != 0) {
+		pci_free_consistent(adapter->pdev, SizeOfBufDMA1 + 0x80, adapter->DmaQ1.buffer, adapter->DmaQ1.bus_addr);
+
+		adapter->DmaQ1.bus_addr = 0;
+		adapter->DmaQ1.head = 0;
+		adapter->DmaQ1.tail = 0;
+		adapter->DmaQ1.buffer_size = 0;
+		adapter->DmaQ1.buffer = 0;
+	}
+
+	if (adapter->DmaQ2.buffer != 0) {
+		pci_free_consistent(adapter->pdev, SizeOfBufDMA2 + 0x80, adapter->DmaQ2.buffer, adapter->DmaQ2.bus_addr);
+
+		adapter->DmaQ2.bus_addr = 0;
+		adapter->DmaQ2.head = 0;
+		adapter->DmaQ2.tail = 0;
+		adapter->DmaQ2.buffer_size = 0;
+		adapter->DmaQ2.buffer = 0;
+	}
+}
+
+void FreeAdapterObject(struct adapter *adapter)
+{
+	dprintk("%s:\n", __FUNCTION__);
+
+	CloseStream(adapter, 0);
+
+	if (adapter->irq != 0)
+		free_irq(adapter->irq, adapter);
+
+	FreeDmaQueue(adapter);
+
+	if (adapter->io_mem != 0)
+		iounmap((void *) adapter->io_mem);
+
+	if (adapter != 0)
+		kfree(adapter);
+}
+
+int ClaimAdapter(struct adapter *adapter)
+{
+	struct pci_dev *pdev = adapter->pdev;
+
+	u16 var;
+
+	if (!request_region(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1), pdev->name))
+		return -EBUSY;
+
+	if (!request_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0), pdev->name))
+		return -EBUSY;
+
+	pci_read_config_byte(pdev, PCI_CLASS_REVISION, &adapter->card_revision);
+
+	dprintk("%s: card revision %x \n", __FUNCTION__, adapter->card_revision);
+
+	if (pci_enable_device(pdev))
+		return -EIO;
+
+	pci_read_config_word(pdev, 4, &var);
+
+	if ((var & 4) == 0)
+		pci_set_master(pdev);
+
+	adapter->io_port = pdev->resource[1].start;
+
+	adapter->io_mem = (u32) ioremap(pdev->resource[0].start, 0x800);
+
+	if (adapter->io_mem == 0) {
+		dprintk("%s: can not map io memory\n", __FUNCTION__);
+
+		return 2;
+	}
+
+	dprintk("%s: io memory maped at %x\n", __FUNCTION__, adapter->io_mem);
+
+	return 1;
+}
+
+int SLL_reset_FlexCOP(struct adapter *adapter)
+{
+	WriteRegDW(adapter, 0x208, 0);
+	WriteRegDW(adapter, 0x210, 0xB2FF);
+
+	return 0;
+}
+
+u32 DriverInitialize(struct pci_dev * pdev)
+{
+	struct adapter *adapter;
+	u32 tmp;
+	u8 key[16];
+
+	if (!(adapter = kmalloc(sizeof(struct adapter), GFP_KERNEL))) {
+		dprintk("%s: out of memory!\n", __FUNCTION__);
+
+		return -ENOMEM;
+	}
+
+	memset(adapter, 0, sizeof(struct adapter));
+
+	pdev->driver_data = adapter;
+
+	adapter->pdev = pdev;
+	adapter->irq = pdev->irq;
+
+	if ((ClaimAdapter(adapter)) != 1) {
+		FreeAdapterObject(adapter);
+
+		return 2;
+	}
+
+	IrqDmaEnableDisableIrq(adapter, 0);
+
+	if (request_irq(pdev->irq, isr, 0x4000000, "Skystar2", adapter) != 0) {
+		dprintk("%s: unable to allocate irq=%d !\n", __FUNCTION__, pdev->irq);
+
+		FreeAdapterObject(adapter);
+
+		return 2;
+	}
+
+	ReadRegDW(adapter, 0x208);
+	WriteRegDW(adapter, 0x208, 0);
+	WriteRegDW(adapter, 0x210, 0xB2FF);
+	WriteRegDW(adapter, 0x208, 0x40);
+
+	InitPIDsInfo(adapter);
+
+	PidSetGroupPID(adapter, 0);
+	PidSetGroupMASK(adapter, 0x1FE0);
+	PidSetStream1PID(adapter, 0x1FFF);
+	PidSetStream2PID(adapter, 0x1FFF);
+	PidSetPmtPID(adapter, 0x1FFF);
+	PidSetPcrPID(adapter, 0x1FFF);
+	PidSetEcmPID(adapter, 0x1FFF);
+	PidSetEmmPID(adapter, 0x1FFF);
+
+	InitDmaQueue(adapter);
+
+	if ((adapter->dma_status & 0x30000000) == 0) {
+		FreeAdapterObject(adapter);
+
+		return 2;
+	}
+
+	adapter->B2C2_revision = (ReadRegDW(adapter, 0x204) >> 0x18);
+
+	if ((adapter->B2C2_revision != 0x82) && (adapter->B2C2_revision != 0xC3))
+		if (adapter->B2C2_revision != 0x82) {
+			dprintk("%s: The revision of the FlexCopII chip on your card is - %d\n", __FUNCTION__, adapter->B2C2_revision);
+			dprintk("%s: This driver works now only with FlexCopII(rev.130) and FlexCopIIB(rev.195).\n", __FUNCTION__);
+
+			FreeAdapterObject(adapter);
+
+			return 2;
+		}
+
+	tmp = ReadRegDW(adapter, 0x204);
+
+	WriteRegDW(adapter, 0x204, 0);
+	linuxdelayms(20);
+
+	WriteRegDW(adapter, 0x204, tmp);
+	linuxdelayms(10);
+
+	tmp = ReadRegDW(adapter, 0x308);
+	WriteRegDW(adapter, 0x308, 0x4000 | tmp);
+
+	adapter->dwSramType = 0x10000;
+
+	SLL_detectSramSize(adapter);
+
+	dprintk("%s sram length = %d, sram type= %x\n", __FUNCTION__, SRAM_length(adapter), adapter->dwSramType);
+
+	SRAMSetMediaDest(adapter, 1);
+	SRAMSetNetDest(adapter, 1);
+
+	CtrlEnableSmc(adapter, 0);
+
+	SRAMSetCaiDest(adapter, 2);
+	SRAMSetCaoDest(adapter, 2);
+
+	DmaEnableDisableIrq(adapter, 1, 0, 0);
+
+	if (EEPROM_getMacAddr(adapter, 0, adapter->mac_addr) != 0) {
+		printk("%s MAC address = %02x:%02x:%02x:%02x:%02x:%02x:%02x:%02x \n", __FUNCTION__, adapter->mac_addr[0], adapter->mac_addr[1], adapter->mac_addr[2], adapter->mac_addr[3], adapter->mac_addr[4], adapter->mac_addr[5], adapter->mac_addr[6], adapter->mac_addr[7]
+		    );
+
+		CASetMacDstAddrFilter(adapter, adapter->mac_addr);
+		CtrlEnableMAC(adapter, 1);
+	}
+
+	EEPROM_readKey(adapter, key, 16);
+
+	printk("%s key = \n %02x %02x %02x %02x \n %02x %02x %02x %02x \n %02x %02x %02x %02x \n %02x %02x %02x %02x \n", __FUNCTION__, key[0], key[1], key[2], key[3], key[4], key[5], key[6], key[7], key[8], key[9], key[10], key[11], key[12], key[13], key[14], key[15]
+	    );
+
+	adapter->lock = SPIN_LOCK_UNLOCKED;
+
+	return 1;
+}
+
+void DriverHalt(struct pci_dev *pdev)
+{
+	struct adapter *adapter;
+
+	adapter = pci_get_drvdata(pdev);
+
+	IrqDmaEnableDisableIrq(adapter, 0);
+
+	CtrlEnableReceiveData(adapter, 0);
+
+	FreeAdapterObject(adapter);
+
+	pci_set_drvdata(pdev, NULL);
+
+	release_region(pci_resource_start(pdev, 1), pci_resource_len(pdev, 1));
+
+	release_mem_region(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0));
+}
+
+static int dvb_start_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+	struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
+	struct adapter *adapter = (struct adapter *) dvbdmx->priv;
+
+	dprintk("%s: PID=%d, type=%d\n", __FUNCTION__, dvbdmxfeed->pid, dvbdmxfeed->type);
+
+	OpenStream(adapter, dvbdmxfeed->pid);
+
+	return 0;
+}
+
+static int dvb_stop_feed(struct dvb_demux_feed *dvbdmxfeed)
+{
+	struct dvb_demux *dvbdmx = dvbdmxfeed->demux;
+	struct adapter *adapter = (struct adapter *) dvbdmx->priv;
+
+	dprintk("%s: PID=%d, type=%d\n", __FUNCTION__, dvbdmxfeed->pid, dvbdmxfeed->type);
+
+	CloseStream(adapter, dvbdmxfeed->pid);
+
+	return 0;
+}
+
+/////////////////////////////////////////////////////////////////////
+//                      LNB control
+/////////////////////////////////////////////////////////////////////
+
+void set_tuner_tone(struct adapter *adapter, u8 tone)
+{
+	u16 wzHalfPeriodFor45MHz[] = { 0x01FF, 0x0154, 0x00FF, 0x00CC };
+	u16 ax;
+
+	dprintk("%s: %u\n", __FUNCTION__, tone);
+
+	switch (tone) {
+	case 1:
+		ax = wzHalfPeriodFor45MHz[0];
+		break;
+	case 2:
+		ax = wzHalfPeriodFor45MHz[1];
+		break;
+	case 3:
+		ax = wzHalfPeriodFor45MHz[2];
+		break;
+	case 4:
+		ax = wzHalfPeriodFor45MHz[3];
+		break;
+
+	default:
+		ax = 0;
+	}
+
+	if (ax != 0) {
+		WriteRegDW(adapter, 0x200, ((ax << 0x0F) + (ax & 0x7FFF)) | 0x40000000);
+
+	} else {
+
+		WriteRegDW(adapter, 0x200, 0x40FF8000);
+	}
+}
+
+void set_tuner_polarity(struct adapter *adapter, u8 polarity)
+{
+	u32 var;
+
+	dprintk("%s : polarity = %u \n", __FUNCTION__, polarity);
+
+	var = ReadRegDW(adapter, 0x204);
+
+	if (polarity == 0) {
+		dprintk("%s: LNB power off\n", __FUNCTION__);
+		var = var | 1;
+	};
+
+	if (polarity == 1) {
+		var = var & ~1;
+		var = var & ~4;
+	};
+
+	if (polarity == 2) {
+		var = var & ~1;
+		var = var | 4;
+	}
+
+	WriteRegDW(adapter, 0x204, var);
+}
+
+static int flexcop_diseqc_ioctl(struct dvb_frontend *fe, unsigned int cmd, void *arg)
+{
+	struct adapter *adapter = fe->before_after_data;
+
+	switch (cmd) {
+	case FE_SLEEP:
+		{
+			printk("%s: FE_SLEEP\n", __FUNCTION__);
+
+			set_tuner_polarity(adapter, 0);
+
+			// return -EOPNOTSUPP, to make DVB core also send "FE_SLEEP" command to frontend.
+			return -EOPNOTSUPP;
+		}
+
+	case FE_SET_VOLTAGE:
+		{
+			dprintk("%s: FE_SET_VOLTAGE\n", __FUNCTION__);
+
+			switch ((fe_sec_voltage_t) arg) {
+			case SEC_VOLTAGE_13:
+
+				printk("%s: SEC_VOLTAGE_13, %x\n", __FUNCTION__, SEC_VOLTAGE_13);
+
+				set_tuner_polarity(adapter, 1);
+
+				break;
+
+			case SEC_VOLTAGE_18:
+
+				printk("%s: SEC_VOLTAGE_18, %x\n", __FUNCTION__, SEC_VOLTAGE_18);
+
+				set_tuner_polarity(adapter, 2);
+
+				break;
+
+			default:
+
+				return -EINVAL;
+			};
+
+			break;
+		}
+
+	case FE_SET_TONE:
+		{
+			dprintk("%s: FE_SET_TONE\n", __FUNCTION__);
+
+			switch ((fe_sec_tone_mode_t) arg) {
+			case SEC_TONE_ON:
+
+				printk("%s: SEC_TONE_ON, %x\n", __FUNCTION__, SEC_TONE_ON);
+
+				set_tuner_tone(adapter, 1);
+
+				break;
+
+			case SEC_TONE_OFF:
+
+				printk("%s: SEC_TONE_OFF, %x\n", __FUNCTION__, SEC_TONE_OFF);
+
+				set_tuner_tone(adapter, 0);
+
+				break;
+
+			default:
+
+				return -EINVAL;
+			};
+
+			break;
+		}
+
+	default:
+
+		return -EOPNOTSUPP;
+	};
+
+	return 0;
+}
+
+static int skystar2_probe(struct pci_dev *pdev, const struct pci_device_id *ent)
+{
+	struct adapter *adapter;
+	struct dvb_adapter *dvb_adapter;
+	struct dvb_demux *dvbdemux;
+
+	int ret;
+
+	if (pdev == NULL)
+		return -ENODEV;
+
+	if (DriverInitialize(pdev) != 1)
+		return -ENODEV;
+
+	dvb_register_adapter(&dvb_adapter, pdev->name);
+
+	if (dvb_adapter == NULL) {
+		printk("%s: Error registering DVB adapter\n", __FUNCTION__);
+
+		DriverHalt(pdev);
+
+		return -ENODEV;
+	}
+
+	adapter = (struct adapter *) pdev->driver_data;
+
+	adapter->dvb_adapter = dvb_adapter;
+
+	init_MUTEX(&adapter->i2c_sem);
+
+	adapter->i2c_bus = dvb_register_i2c_bus(master_xfer, adapter, adapter->dvb_adapter, 0);
+
+	if (!adapter->i2c_bus)
+		return -ENOMEM;
+
+	dvb_add_frontend_ioctls(adapter->dvb_adapter, flexcop_diseqc_ioctl, NULL, adapter);
+
+	dvbdemux = &adapter->demux;
+
+	dvbdemux->priv = (void *) adapter;
+	dvbdemux->filternum = 32;
+	dvbdemux->feednum = 32;
+	dvbdemux->start_feed = dvb_start_feed;
+	dvbdemux->stop_feed = dvb_stop_feed;
+	dvbdemux->write_to_decoder = 0;
+	dvbdemux->dmx.capabilities = (DMX_TS_FILTERING | DMX_SECTION_FILTERING | DMX_MEMORY_BASED_FILTERING);
+
+	dvb_dmx_init(&adapter->demux);
+
+	adapter->hw_frontend.source = DMX_FRONTEND_0;
+
+	adapter->dmxdev.filternum = 32;
+	adapter->dmxdev.demux = &dvbdemux->dmx;
+	adapter->dmxdev.capabilities = 0;
+
+	dvb_dmxdev_init(&adapter->dmxdev, adapter->dvb_adapter);
+
+	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &adapter->hw_frontend);
+	if (ret < 0)
+		return ret;
+
+	adapter->mem_frontend.source = DMX_MEMORY_FE;
+
+	ret = dvbdemux->dmx.add_frontend(&dvbdemux->dmx, &adapter->mem_frontend);
+	if (ret < 0)
+		return ret;
+
+	ret = dvbdemux->dmx.connect_frontend(&dvbdemux->dmx, &adapter->hw_frontend);
+	if (ret < 0)
+		return ret;
+
+	dvb_net_init(adapter->dvb_adapter, &adapter->dvbnet, &dvbdemux->dmx);
+	return 0;
+}
+
+static void skystar2_remove(struct pci_dev *pdev)
+{
+	struct adapter *adapter;
+	struct dvb_demux *dvbdemux;
+
+	if (pdev == NULL)
+		return;
+
+	adapter = pci_get_drvdata(pdev);
+
+	if (adapter != NULL) {
+		dvb_net_release(&adapter->dvbnet);
+		dvbdemux = &adapter->demux;
+
+		dvbdemux->dmx.close(&dvbdemux->dmx);
+		dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &adapter->hw_frontend);
+		dvbdemux->dmx.remove_frontend(&dvbdemux->dmx, &adapter->mem_frontend);
+
+		dvb_dmxdev_release(&adapter->dmxdev);
+		dvb_dmx_release(&adapter->demux);
+
+		if (adapter->dvb_adapter != NULL) {
+			dvb_remove_frontend_ioctls(adapter->dvb_adapter, flexcop_diseqc_ioctl, NULL);
+
+			if (adapter->i2c_bus != NULL)
+				dvb_unregister_i2c_bus(master_xfer, adapter->i2c_bus->adapter, adapter->i2c_bus->id);
+
+			dvb_unregister_adapter(adapter->dvb_adapter);
+		}
+
+		DriverHalt(pdev);
+	}
+}
+
+static struct pci_device_id skystar2_pci_tbl[] = {
+	{0x000013D0, 0x00002103, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000},
+	{0,},
+};
+
+static struct pci_driver skystar2_pci_driver = {
+	.name = "Technisat SkyStar2 driver",
+	.id_table = skystar2_pci_tbl,
+	.probe = skystar2_probe,
+	.remove = skystar2_remove,
+};
+
+static int skystar2_init(void)
+{
+	printk("\nTechnisat SkyStar2 driver loading\n");
+
+	return pci_module_init(&skystar2_pci_driver);
+}
+
+static void skystar2_cleanup(void)
+{
+	printk("\nTechnisat SkyStar2 driver unloading\n");
+
+	pci_unregister_driver(&skystar2_pci_driver);
+}
+
+module_init(skystar2_init);
+module_exit(skystar2_cleanup);
+
+MODULE_DESCRIPTION("Technisat SkyStar2 DVB PCI Driver");
+MODULE_LICENSE("GPL");
+EXPORT_NO_SYMBOLS;