[PATCH 1/9 v3] Altera FPGA firmware download module.

[Igor M. Liplianin]

It uses STAPL files and programs Altera FPGA through JTAG.
Interface to JTAG must be provided from main device module,
for example through cx23885 GPIO.

Signed-off-by: Igor M. Liplianin <liplianin@xxxxxxxx>
---
 drivers/staging/Kconfig                     |    2 +
 drivers/staging/Makefile                    |    1 +
 drivers/staging/altera-stapl/Kconfig        |    8 +
 drivers/staging/altera-stapl/Makefile       |    3 +
 drivers/staging/altera-stapl/altera-comp.c  |  142 ++
 drivers/staging/altera-stapl/altera-exprt.h |   33 +
 drivers/staging/altera-stapl/altera-jtag.c  | 1020 +++++++++++
 drivers/staging/altera-stapl/altera-jtag.h  |  113 ++
 drivers/staging/altera-stapl/altera-lpt.c   |   70 +
 drivers/staging/altera-stapl/altera.c       | 2527 +++++++++++++++++++++++++++
 include/staging/altera.h                    |   49 +
 11 files changed, 3968 insertions(+), 0 deletions(-)
 create mode 100644 drivers/staging/altera-stapl/Kconfig
 create mode 100644 drivers/staging/altera-stapl/Makefile
 create mode 100644 drivers/staging/altera-stapl/altera-comp.c
 create mode 100644 drivers/staging/altera-stapl/altera-exprt.h
 create mode 100644 drivers/staging/altera-stapl/altera-jtag.c
 create mode 100644 drivers/staging/altera-stapl/altera-jtag.h
 create mode 100644 drivers/staging/altera-stapl/altera-lpt.c
 create mode 100644 drivers/staging/altera-stapl/altera.c
 create mode 100644 include/staging/altera.h

diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index 1fc1087..7f35e88 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -177,5 +177,7 @@ source "drivers/staging/intel_sst/Kconfig"
 
 source "drivers/staging/speakup/Kconfig"
 
+source "drivers/staging/altera-stapl/Kconfig"
+
 endif # !STAGING_EXCLUDE_BUILD
 endif # STAGING
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 2f638e5..d2176b5 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -69,3 +69,4 @@ obj-$(CONFIG_BCM_WIMAX)	+= bcm/
 obj-$(CONFIG_FT1000)		+= ft1000/
 obj-$(CONFIG_SND_INTEL_SST)		+= intel_sst/
 obj-$(CONFIG_SPEAKUP)	+= speakup/
+obj-y				+=altera-stapl/
diff --git a/drivers/staging/altera-stapl/Kconfig b/drivers/staging/altera-stapl/Kconfig
new file mode 100644
index 0000000..7f01d8e
--- /dev/null
+++ b/drivers/staging/altera-stapl/Kconfig
@@ -0,0 +1,8 @@
+comment "Altera FPGA firmware download module"
+
+config ALTERA_STAPL
+	tristate "Altera FPGA firmware download module"
+	depends on I2C
+	default n
+	help
+	  An Altera FPGA module. Say Y when you want to support this tool.
diff --git a/drivers/staging/altera-stapl/Makefile b/drivers/staging/altera-stapl/Makefile
new file mode 100644
index 0000000..055f61e
--- /dev/null
+++ b/drivers/staging/altera-stapl/Makefile
@@ -0,0 +1,3 @@
+altera-stapl-objs = altera-lpt.o altera-jtag.o altera-comp.o altera.o
+
+obj-$(CONFIG_ALTERA_STAPL) += altera-stapl.o
diff --git a/drivers/staging/altera-stapl/altera-comp.c b/drivers/staging/altera-stapl/altera-comp.c
new file mode 100644
index 0000000..49b103b
--- /dev/null
+++ b/drivers/staging/altera-stapl/altera-comp.c
@@ -0,0 +1,142 @@
+/*
+ * altera-comp.c
+ *
+ * altera FPGA driver
+ *
+ * Copyright (C) Altera Corporation 1998-2001
+ * Copyright (C) 2010 NetUP Inc.
+ * Copyright (C) 2010 Igor M. Liplianin <liplianin@xxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/kernel.h>
+#include "altera-exprt.h"
+
+#define	SHORT_BITS		16
+#define	CHAR_BITS		8
+#define	DATA_BLOB_LENGTH	3
+#define	MATCH_DATA_LENGTH	8192
+#define ALTERA_REQUEST_SIZE	1024
+#define ALTERA_BUFFER_SIZE	(MATCH_DATA_LENGTH + ALTERA_REQUEST_SIZE)
+
+static u32 altera_bits_req(u32 n)
+{
+	u32 result = SHORT_BITS;
+
+	if (n == 0)
+		result = 1;
+	else {
+		/* Look for the highest non-zero bit position */
+		while ((n & (1 << (SHORT_BITS - 1))) == 0) {
+			n <<= 1;
+			--result;
+		}
+	}
+
+	return result;
+}
+
+static u32 altera_read_packed(u8 *buffer, u32 bits, u32 *bits_avail,
+							u32 *in_index)
+{
+	u32 result = 0;
+	u32 shift = 0;
+	u32 databyte = 0;
+
+	while (bits > 0) {
+		databyte = buffer[*in_index];
+		result |= (((databyte >> (CHAR_BITS - *bits_avail))
+			& (0xff >> (CHAR_BITS - *bits_avail))) << shift);
+
+		if (bits <= *bits_avail) {
+			result &= (0xffff >> (SHORT_BITS - (bits + shift)));
+			*bits_avail -= bits;
+			bits = 0;
+		} else {
+			++(*in_index);
+			shift += *bits_avail;
+			bits -= *bits_avail;
+			*bits_avail = CHAR_BITS;
+		}
+	}
+
+	return result;
+}
+
+u32 altera_shrink(u8 *in, u32 in_length, u8 *out, u32 out_length, s32 version)
+{
+	u32 i, j, data_length = 0L;
+	u32 offset, length;
+	u32 match_data_length = MATCH_DATA_LENGTH;
+	u32 bits_avail = CHAR_BITS;
+	u32 in_index = 0L;
+
+	if (version > 0)
+		--match_data_length;
+
+	for (i = 0; i < out_length; ++i)
+		out[i] = 0;
+
+	/* Read number of bytes in data. */
+	for (i = 0; i < sizeof(in_length); ++i) {
+		data_length = data_length | (
+			altera_read_packed(in,
+					CHAR_BITS,
+					&bits_avail,
+					&in_index) << (i * CHAR_BITS));
+	}
+
+	if (data_length > out_length) {
+		data_length = 0L;
+		return data_length;
+	}
+
+	i = 0;
+	while (i < data_length) {
+		/* A 0 bit indicates literal data. */
+		if (altera_read_packed(in, 1, &bits_avail,
+						&in_index) == 0) {
+			for (j = 0; j < DATA_BLOB_LENGTH; ++j) {
+				if (i < data_length) {
+					out[i] = (u8)altera_read_packed(in,
+							CHAR_BITS,
+							&bits_avail,
+							&in_index);
+					i++;
+				}
+			}
+		} else {
+			/* A 1 bit indicates offset/length to follow. */
+			offset = altera_read_packed(in, altera_bits_req((s16)
+					(i > match_data_length ?
+						match_data_length : i)),
+					&bits_avail,
+					&in_index);
+			length = altera_read_packed(in, CHAR_BITS,
+					&bits_avail,
+					&in_index);
+			for (j = 0; j < length; ++j) {
+				if (i < data_length) {
+					out[i] = out[i - offset];
+					i++;
+				}
+			}
+		}
+	}
+
+	return data_length;
+}
diff --git a/drivers/staging/altera-stapl/altera-exprt.h b/drivers/staging/altera-stapl/altera-exprt.h
new file mode 100644
index 0000000..39c38d8
--- /dev/null
+++ b/drivers/staging/altera-stapl/altera-exprt.h
@@ -0,0 +1,33 @@
+/*
+ * altera-exprt.h
+ *
+ * altera FPGA driver
+ *
+ * Copyright (C) Altera Corporation 1998-2001
+ * Copyright (C) 2010 NetUP Inc.
+ * Copyright (C) 2010 Igor M. Liplianin <liplianin@xxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef ALTERA_EXPRT_H
+#define ALTERA_EXPRT_H
+
+
+u32 altera_shrink(u8 *in, u32 in_length, u8 *out, u32 out_length, s32 version);
+int netup_jtag_io_lpt(void *device, int tms, int tdi, int read_tdo);
+
+#endif /* ALTERA_EXPRT_H */
diff --git a/drivers/staging/altera-stapl/altera-jtag.c b/drivers/staging/altera-stapl/altera-jtag.c
new file mode 100644
index 0000000..6b633b1
--- /dev/null
+++ b/drivers/staging/altera-stapl/altera-jtag.c
@@ -0,0 +1,1020 @@
+/*
+ * altera-jtag.c
+ *
+ * altera FPGA driver
+ *
+ * Copyright (C) Altera Corporation 1998-2001
+ * Copyright (C) 2010 NetUP Inc.
+ * Copyright (C) 2010 Igor M. Liplianin <liplianin@xxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/firmware.h>
+#include <linux/slab.h>
+#include <staging/altera.h>
+#include "altera-exprt.h"
+#include "altera-jtag.h"
+
+#define	alt_jtag_io(a, b, c)\
+		astate->config->jtag_io(astate->config->dev, a, b, c);
+
+#define	alt_malloc(a)	kzalloc(a, GFP_KERNEL);
+
+/*
+ * This structure shows, for each JTAG state, which state is reached after
+ * a single TCK clock cycle with TMS high or TMS low, respectively.  This
+ * describes all possible state transitions in the JTAG state machine.
+ */
+struct altera_jtag_machine {
+	enum altera_jtag_state tms_high;
+	enum altera_jtag_state tms_low;
+};
+
+static const struct altera_jtag_machine altera_transitions[] = {
+	/* RESET     */	{ RESET,	IDLE },
+	/* IDLE      */	{ DRSELECT,	IDLE },
+	/* DRSELECT  */	{ IRSELECT,	DRCAPTURE },
+	/* DRCAPTURE */	{ DREXIT1,	DRSHIFT },
+	/* DRSHIFT   */	{ DREXIT1,	DRSHIFT },
+	/* DREXIT1   */	{ DRUPDATE,	DRPAUSE },
+	/* DRPAUSE   */	{ DREXIT2,	DRPAUSE },
+	/* DREXIT2   */	{ DRUPDATE,	DRSHIFT },
+	/* DRUPDATE  */	{ DRSELECT,	IDLE },
+	/* IRSELECT  */	{ RESET,	IRCAPTURE },
+	/* IRCAPTURE */	{ IREXIT1,	IRSHIFT },
+	/* IRSHIFT   */	{ IREXIT1,	IRSHIFT },
+	/* IREXIT1   */	{ IRUPDATE,	IRPAUSE },
+	/* IRPAUSE   */	{ IREXIT2,	IRPAUSE },
+	/* IREXIT2   */	{ IRUPDATE,	IRSHIFT },
+	/* IRUPDATE  */	{ DRSELECT,	IDLE }
+};
+
+/*
+ * This table contains the TMS value to be used to take the NEXT STEP on
+ * the path to the desired state.  The array index is the current state,
+ * and the bit position is the desired endstate.  To find out which state
+ * is used as the intermediate state, look up the TMS value in the
+ * altera_transitions[] table.
+ */
+static const u16 altera_jtag_path_map[16] = {
+	/* RST	RTI	SDRS	CDR	SDR	E1DR	PDR	E2DR */
+	0x0001,	0xFFFD,	0xFE01,	0xFFE7,	0xFFEF,	0xFF0F,	0xFFBF,	0xFFFF,
+	/* UDR	SIRS	CIR	SIR	E1IR	PIR	E2IR	UIR */
+	0xFEFD,	0x0001,	0xF3FF,	0xF7FF,	0x87FF,	0xDFFF,	0xFFFF,	0x7FFD
+};
+
+/* Flag bits for alt_jtag_io() function */
+#define TMS_HIGH   1
+#define TMS_LOW    0
+#define TDI_HIGH   1
+#define TDI_LOW    0
+#define READ_TDO   1
+#define IGNORE_TDO 0
+
+int altera_jinit(struct altera_state *astate)
+{
+	struct altera_jtag *js = &astate->js;
+
+	/* initial JTAG state is unknown */
+	js->jtag_state = ILLEGAL_JTAG_STATE;
+
+	/* initialize to default state */
+	js->drstop_state = IDLE;
+	js->irstop_state = IDLE;
+	js->dr_pre  = 0;
+	js->dr_post = 0;
+	js->ir_pre  = 0;
+	js->ir_post = 0;
+	js->dr_length    = 0;
+	js->ir_length    = 0;
+
+	js->dr_pre_data  = NULL;
+	js->dr_post_data = NULL;
+	js->ir_pre_data  = NULL;
+	js->ir_post_data = NULL;
+	js->dr_buffer	 = NULL;
+	js->ir_buffer	 = NULL;
+
+	return 0;
+}
+
+int altera_set_drstop(struct altera_jtag *js, enum altera_jtag_state state)
+{
+	js->drstop_state = state;
+
+	return 0;
+}
+
+int altera_set_irstop(struct altera_jtag *js, enum altera_jtag_state state)
+{
+	js->irstop_state = state;
+
+	return 0;
+}
+
+int altera_set_dr_pre(struct altera_jtag *js,
+				u32 count, u32 start_index,
+				u8 *preamble_data)
+{
+	int status = 0;
+	u32 i;
+	u32 j;
+
+	if (count > js->dr_pre) {
+		kfree(js->dr_pre_data);
+		js->dr_pre_data = (u8 *)alt_malloc((count + 7) >> 3);
+		if (js->dr_pre_data == NULL)
+			status = -ENOMEM;
+		else
+			js->dr_pre = count;
+	} else
+		js->dr_pre = count;
+
+	if (status == 0) {
+		for (i = 0; i < count; ++i) {
+			j = i + start_index;
+
+			if (preamble_data == NULL)
+				js->dr_pre_data[i >> 3] |= (1 << (i & 7));
+			else {
+				if (preamble_data[j >> 3] & (1 << (j & 7)))
+					js->dr_pre_data[i >> 3] |=
+							(1 << (i & 7));
+				else
+					js->dr_pre_data[i >> 3] &=
+							~(u32)(1 << (i & 7));
+
+			}
+		}
+	}
+
+	return status;
+}
+
+int altera_set_ir_pre(struct altera_jtag *js, u32 count, u32 start_index,
+							u8 *preamble_data)
+{
+	int status = 0;
+	u32 i;
+	u32 j;
+
+	if (count > js->ir_pre) {
+		kfree(js->ir_pre_data);
+		js->ir_pre_data = (u8 *)alt_malloc((count + 7) >> 3);
+		if (js->ir_pre_data == NULL)
+			status = -ENOMEM;
+		else
+			js->ir_pre = count;
+
+	} else
+		js->ir_pre = count;
+
+	if (status == 0) {
+		for (i = 0; i < count; ++i) {
+			j = i + start_index;
+			if (preamble_data == NULL)
+				js->ir_pre_data[i >> 3] |= (1 << (i & 7));
+			else {
+				if (preamble_data[j >> 3] & (1 << (j & 7)))
+					js->ir_pre_data[i >> 3] |=
+							(1 << (i & 7));
+				else
+					js->ir_pre_data[i >> 3] &=
+							~(u32)(1 << (i & 7));
+
+			}
+		}
+	}
+
+	return status;
+}
+
+int altera_set_dr_post(struct altera_jtag *js, u32 count, u32 start_index,
+						u8 *postamble_data)
+{
+	int status = 0;
+	u32 i;
+	u32 j;
+
+	if (count > js->dr_post) {
+		kfree(js->dr_post_data);
+		js->dr_post_data = (u8 *)alt_malloc((count + 7) >> 3);
+
+		if (js->dr_post_data == NULL)
+			status = -ENOMEM;
+		else
+			js->dr_post = count;
+
+	} else
+		js->dr_post = count;
+
+	if (status == 0) {
+		for (i = 0; i < count; ++i) {
+			j = i + start_index;
+
+			if (postamble_data == NULL)
+				js->dr_post_data[i >> 3] |= (1 << (i & 7));
+			else {
+				if (postamble_data[j >> 3] & (1 << (j & 7)))
+					js->dr_post_data[i >> 3] |=
+								(1 << (i & 7));
+				else
+					js->dr_post_data[i >> 3] &=
+					    ~(u32)(1 << (i & 7));
+
+			}
+		}
+	}
+
+	return status;
+}
+
+int altera_set_ir_post(struct altera_jtag *js, u32 count, u32 start_index,
+						u8 *postamble_data)
+{
+	int status = 0;
+	u32 i;
+	u32 j;
+
+	if (count > js->ir_post) {
+		kfree(js->ir_post_data);
+		js->ir_post_data = (u8 *)alt_malloc((count + 7) >> 3);
+		if (js->ir_post_data == NULL)
+			status = -ENOMEM;
+		else
+			js->ir_post = count;
+
+	} else
+		js->ir_post = count;
+
+	if (status != 0)
+		return status;
+
+	for (i = 0; i < count; ++i) {
+		j = i + start_index;
+
+		if (postamble_data == NULL)
+			js->ir_post_data[i >> 3] |= (1 << (i & 7));
+		else {
+			if (postamble_data[j >> 3] & (1 << (j & 7)))
+				js->ir_post_data[i >> 3] |= (1 << (i & 7));
+			else
+				js->ir_post_data[i >> 3] &=
+				    ~(u32)(1 << (i & 7));
+
+		}
+	}
+
+	return status;
+}
+
+static void altera_jreset_idle(struct altera_state *astate)
+{
+	struct altera_jtag *js = &astate->js;
+	int i;
+	/* Go to Test Logic Reset (no matter what the starting state may be) */
+	for (i = 0; i < 5; ++i)
+		alt_jtag_io(TMS_HIGH, TDI_LOW, IGNORE_TDO);
+
+	/* Now step to Run Test / Idle */
+	alt_jtag_io(TMS_LOW, TDI_LOW, IGNORE_TDO);
+	js->jtag_state = IDLE;
+}
+
+int altera_goto_jstate(struct altera_state *astate,
+					enum altera_jtag_state state)
+{
+	struct altera_jtag *js = &astate->js;
+	int tms;
+	int count = 0;
+	int status = 0;
+
+	if (js->jtag_state == ILLEGAL_JTAG_STATE)
+		/* initialize JTAG chain to known state */
+		altera_jreset_idle(astate);
+
+	if (js->jtag_state == state) {
+		/*
+		 * We are already in the desired state.
+		 * If it is a stable state, loop here.
+		 * Otherwise do nothing (no clock cycles).
+		 */
+		if ((state == IDLE) || (state == DRSHIFT) ||
+			(state == DRPAUSE) || (state == IRSHIFT) ||
+				(state == IRPAUSE)) {
+			alt_jtag_io(TMS_LOW, TDI_LOW, IGNORE_TDO);
+		} else if (state == RESET)
+			alt_jtag_io(TMS_HIGH, TDI_LOW, IGNORE_TDO);
+
+	} else {
+		while ((js->jtag_state != state) && (count < 9)) {
+			/* Get TMS value to take a step toward desired state */
+			tms = (altera_jtag_path_map[js->jtag_state] &
+							(1 << state))
+							? TMS_HIGH : TMS_LOW;
+
+			/* Take a step */
+			alt_jtag_io(tms, TDI_LOW, IGNORE_TDO);
+
+			if (tms)
+				js->jtag_state =
+					altera_transitions[js->jtag_state].tms_high;
+			else
+				js->jtag_state =
+					altera_transitions[js->jtag_state].tms_low;
+
+			++count;
+		}
+	}
+
+	if (js->jtag_state != state)
+		status = -EREMOTEIO;
+
+	return status;
+}
+
+int altera_wait_cycles(struct altera_state *astate,
+					s32 cycles,
+					enum altera_jtag_state wait_state)
+{
+	struct altera_jtag *js = &astate->js;
+	int tms;
+	s32 count;
+	int status = 0;
+
+	if (js->jtag_state != wait_state)
+		status = altera_goto_jstate(astate, wait_state);
+
+	if (status == 0) {
+		/*
+		 * Set TMS high to loop in RESET state
+		 * Set TMS low to loop in any other stable state
+		 */
+		tms = (wait_state == RESET) ? TMS_HIGH : TMS_LOW;
+
+		for (count = 0L; count < cycles; count++)
+			alt_jtag_io(tms, TDI_LOW, IGNORE_TDO);
+
+	}
+
+	return status;
+}
+
+int altera_wait_msecs(struct altera_state *astate,
+			s32 microseconds, enum altera_jtag_state wait_state)
+/*
+ * Causes JTAG hardware to sit in the specified stable
+ * state for the specified duration of real time.  If
+ * no JTAG operations have been performed yet, then only
+ * a delay is performed.  This permits the WAIT USECS
+ * statement to be used in VECTOR programs without causing
+ * any JTAG operations.
+ * Returns 0 for success, else appropriate error code.
+ */
+{
+	struct altera_jtag *js = &astate->js;
+	int status = 0;
+
+	if ((js->jtag_state != ILLEGAL_JTAG_STATE) &&
+	    (js->jtag_state != wait_state))
+		status = altera_goto_jstate(astate, wait_state);
+
+	if (status == 0)
+		/* Wait for specified time interval */
+		udelay(microseconds);
+
+	return status;
+}
+
+static void altera_concatenate_data(u8 *buffer,
+				u8 *preamble_data,
+				u32 preamble_count,
+				u8 *target_data,
+				u32 start_index,
+				u32 target_count,
+				u8 *postamble_data,
+				u32 postamble_count)
+/*
+ * Copies preamble data, target data, and postamble data
+ * into one buffer for IR or DR scans.
+ */
+{
+	u32 i, j, k;
+
+	for (i = 0L; i < preamble_count; ++i) {
+		if (preamble_data[i >> 3L] & (1L << (i & 7L)))
+			buffer[i >> 3L] |= (1L << (i & 7L));
+		else
+			buffer[i >> 3L] &= ~(u32)(1L << (i & 7L));
+
+	}
+
+	j = start_index;
+	k = preamble_count + target_count;
+	for (; i < k; ++i, ++j) {
+		if (target_data[j >> 3L] & (1L << (j & 7L)))
+			buffer[i >> 3L] |= (1L << (i & 7L));
+		else
+			buffer[i >> 3L] &= ~(u32)(1L << (i & 7L));
+
+	}
+
+	j = 0L;
+	k = preamble_count + target_count + postamble_count;
+	for (; i < k; ++i, ++j) {
+		if (postamble_data[j >> 3L] & (1L << (j & 7L)))
+			buffer[i >> 3L] |= (1L << (i & 7L));
+		else
+			buffer[i >> 3L] &= ~(u32)(1L << (i & 7L));
+
+	}
+}
+
+static int alt_jtag_drscan(struct altera_state *astate,
+			int start_state,
+			int count,
+			u8 *tdi,
+			u8 *tdo)
+{
+	int i = 0;
+	int tdo_bit = 0;
+	int status = 1;
+
+	/* First go to DRSHIFT state */
+	switch (start_state) {
+	case 0:						/* IDLE */
+		alt_jtag_io(1, 0, 0);	/* DRSELECT */
+		alt_jtag_io(0, 0, 0);	/* DRCAPTURE */
+		alt_jtag_io(0, 0, 0);	/* DRSHIFT */
+		break;
+
+	case 1:						/* DRPAUSE */
+		alt_jtag_io(1, 0, 0);	/* DREXIT2 */
+		alt_jtag_io(1, 0, 0);	/* DRUPDATE */
+		alt_jtag_io(1, 0, 0);	/* DRSELECT */
+		alt_jtag_io(0, 0, 0);	/* DRCAPTURE */
+		alt_jtag_io(0, 0, 0);	/* DRSHIFT */
+		break;
+
+	case 2:						/* IRPAUSE */
+		alt_jtag_io(1, 0, 0);	/* IREXIT2 */
+		alt_jtag_io(1, 0, 0);	/* IRUPDATE */
+		alt_jtag_io(1, 0, 0);	/* DRSELECT */
+		alt_jtag_io(0, 0, 0);	/* DRCAPTURE */
+		alt_jtag_io(0, 0, 0);	/* DRSHIFT */
+		break;
+
+	default:
+		status = 0;
+	}
+
+	if (status) {
+		/* loop in the SHIFT-DR state */
+		for (i = 0; i < count; i++) {
+			tdo_bit = alt_jtag_io(
+					(i == count - 1),
+					tdi[i >> 3] & (1 << (i & 7)),
+					(tdo != NULL));
+
+			if (tdo != NULL) {
+				if (tdo_bit)
+					tdo[i >> 3] |= (1 << (i & 7));
+				else
+					tdo[i >> 3] &= ~(u32)(1 << (i & 7));
+
+			}
+		}
+
+		alt_jtag_io(0, 0, 0);	/* DRPAUSE */
+	}
+
+	return status;
+}
+
+static int alt_jtag_irscan(struct altera_state *astate,
+		    int start_state,
+		    int count,
+		    u8 *tdi,
+		    u8 *tdo)
+{
+	int i = 0;
+	int tdo_bit = 0;
+	int status = 1;
+
+	/* First go to IRSHIFT state */
+	switch (start_state) {
+	case 0:						/* IDLE */
+		alt_jtag_io(1, 0, 0);	/* DRSELECT */
+		alt_jtag_io(1, 0, 0);	/* IRSELECT */
+		alt_jtag_io(0, 0, 0);	/* IRCAPTURE */
+		alt_jtag_io(0, 0, 0);	/* IRSHIFT */
+		break;
+
+	case 1:						/* DRPAUSE */
+		alt_jtag_io(1, 0, 0);	/* DREXIT2 */
+		alt_jtag_io(1, 0, 0);	/* DRUPDATE */
+		alt_jtag_io(1, 0, 0);	/* DRSELECT */
+		alt_jtag_io(1, 0, 0);	/* IRSELECT */
+		alt_jtag_io(0, 0, 0);	/* IRCAPTURE */
+		alt_jtag_io(0, 0, 0);	/* IRSHIFT */
+		break;
+
+	case 2:						/* IRPAUSE */
+		alt_jtag_io(1, 0, 0);	/* IREXIT2 */
+		alt_jtag_io(1, 0, 0);	/* IRUPDATE */
+		alt_jtag_io(1, 0, 0);	/* DRSELECT */
+		alt_jtag_io(1, 0, 0);	/* IRSELECT */
+		alt_jtag_io(0, 0, 0);	/* IRCAPTURE */
+		alt_jtag_io(0, 0, 0);	/* IRSHIFT */
+		break;
+
+	default:
+		status = 0;
+	}
+
+	if (status) {
+		/* loop in the SHIFT-IR state */
+		for (i = 0; i < count; i++) {
+			tdo_bit = alt_jtag_io(
+				      (i == count - 1),
+				      tdi[i >> 3] & (1 << (i & 7)),
+				      (tdo != NULL));
+			if (tdo != NULL) {
+				if (tdo_bit)
+					tdo[i >> 3] |= (1 << (i & 7));
+				else
+					tdo[i >> 3] &= ~(u32)(1 << (i & 7));
+
+			}
+		}
+
+		alt_jtag_io(0, 0, 0);	/* IRPAUSE */
+	}
+
+	return status;
+}
+
+static void altera_extract_target_data(u8 *buffer,
+				u8 *target_data,
+				u32 start_index,
+				u32 preamble_count,
+				u32 target_count)
+/*
+ * Copies target data from scan buffer, filtering out
+ * preamble and postamble data.
+ */
+{
+	u32 i;
+	u32 j;
+	u32 k;
+
+	j = preamble_count;
+	k = start_index + target_count;
+	for (i = start_index; i < k; ++i, ++j) {
+		if (buffer[j >> 3] & (1 << (j & 7)))
+			target_data[i >> 3] |= (1 << (i & 7));
+		else
+			target_data[i >> 3] &= ~(u32)(1 << (i & 7));
+
+	}
+}
+
+int altera_irscan(struct altera_state *astate,
+				u32 count,
+				u8 *tdi_data,
+				u32 start_index)
+/* Shifts data into instruction register */
+{
+	struct altera_jtag *js = &astate->js;
+	int start_code = 0;
+	u32 alloc_chars = 0;
+	u32 shift_count = js->ir_pre + count + js->ir_post;
+	int status = 0;
+	enum altera_jtag_state start_state = ILLEGAL_JTAG_STATE;
+
+	switch (js->jtag_state) {
+	case ILLEGAL_JTAG_STATE:
+	case RESET:
+	case IDLE:
+		start_code = 0;
+		start_state = IDLE;
+		break;
+
+	case DRSELECT:
+	case DRCAPTURE:
+	case DRSHIFT:
+	case DREXIT1:
+	case DRPAUSE:
+	case DREXIT2:
+	case DRUPDATE:
+		start_code = 1;
+		start_state = DRPAUSE;
+		break;
+
+	case IRSELECT:
+	case IRCAPTURE:
+	case IRSHIFT:
+	case IREXIT1:
+	case IRPAUSE:
+	case IREXIT2:
+	case IRUPDATE:
+		start_code = 2;
+		start_state = IRPAUSE;
+		break;
+
+	default:
+		status = -EREMOTEIO;
+		break;
+	}
+
+	if (status == 0)
+		if (js->jtag_state != start_state)
+			status = altera_goto_jstate(astate, start_state);
+
+	if (status == 0) {
+		if (shift_count > js->ir_length) {
+			alloc_chars = (shift_count + 7) >> 3;
+			kfree(js->ir_buffer);
+			js->ir_buffer = (u8 *)alt_malloc(alloc_chars);
+			if (js->ir_buffer == NULL)
+				status = -ENOMEM;
+			else
+				js->ir_length = alloc_chars * 8;
+
+		}
+	}
+
+	if (status == 0) {
+		/*
+		 * Copy preamble data, IR data,
+		 * and postamble data into a buffer
+		 */
+		altera_concatenate_data(js->ir_buffer,
+					js->ir_pre_data,
+					js->ir_pre,
+					tdi_data,
+					start_index,
+					count,
+					js->ir_post_data,
+					js->ir_post);
+		/* Do the IRSCAN */
+		alt_jtag_irscan(astate,
+				start_code,
+				shift_count,
+				js->ir_buffer,
+				NULL);
+
+		/* alt_jtag_irscan() always ends in IRPAUSE state */
+		js->jtag_state = IRPAUSE;
+	}
+
+	if (status == 0)
+		if (js->irstop_state != IRPAUSE)
+			status = altera_goto_jstate(astate, js->irstop_state);
+
+
+	return status;
+}
+
+int altera_swap_ir(struct altera_state *astate,
+			    u32 count,
+			    u8 *in_data,
+			    u32 in_index,
+			    u8 *out_data,
+			    u32 out_index)
+/* Shifts data into instruction register, capturing output data */
+{
+	struct altera_jtag *js = &astate->js;
+	int start_code = 0;
+	u32 alloc_chars = 0;
+	u32 shift_count = js->ir_pre + count + js->ir_post;
+	int status = 0;
+	enum altera_jtag_state start_state = ILLEGAL_JTAG_STATE;
+
+	switch (js->jtag_state) {
+	case ILLEGAL_JTAG_STATE:
+	case RESET:
+	case IDLE:
+		start_code = 0;
+		start_state = IDLE;
+		break;
+
+	case DRSELECT:
+	case DRCAPTURE:
+	case DRSHIFT:
+	case DREXIT1:
+	case DRPAUSE:
+	case DREXIT2:
+	case DRUPDATE:
+		start_code = 1;
+		start_state = DRPAUSE;
+		break;
+
+	case IRSELECT:
+	case IRCAPTURE:
+	case IRSHIFT:
+	case IREXIT1:
+	case IRPAUSE:
+	case IREXIT2:
+	case IRUPDATE:
+		start_code = 2;
+		start_state = IRPAUSE;
+		break;
+
+	default:
+		status = -EREMOTEIO;
+		break;
+	}
+
+	if (status == 0)
+		if (js->jtag_state != start_state)
+			status = altera_goto_jstate(astate, start_state);
+
+	if (status == 0) {
+		if (shift_count > js->ir_length) {
+			alloc_chars = (shift_count + 7) >> 3;
+			kfree(js->ir_buffer);
+			js->ir_buffer = (u8 *)alt_malloc(alloc_chars);
+			if (js->ir_buffer == NULL)
+				status = -ENOMEM;
+			else
+				js->ir_length = alloc_chars * 8;
+
+		}
+	}
+
+	if (status == 0) {
+		/*
+		 * Copy preamble data, IR data,
+		 * and postamble data into a buffer
+		 */
+		altera_concatenate_data(js->ir_buffer,
+					js->ir_pre_data,
+					js->ir_pre,
+					in_data,
+					in_index,
+					count,
+					js->ir_post_data,
+					js->ir_post);
+
+		/* Do the IRSCAN */
+		alt_jtag_irscan(astate,
+				start_code,
+				shift_count,
+				js->ir_buffer,
+				js->ir_buffer);
+
+		/* alt_jtag_irscan() always ends in IRPAUSE state */
+		js->jtag_state = IRPAUSE;
+	}
+
+	if (status == 0)
+		if (js->irstop_state != IRPAUSE)
+			status = altera_goto_jstate(astate, js->irstop_state);
+
+
+	if (status == 0)
+		/* Now extract the returned data from the buffer */
+		altera_extract_target_data(js->ir_buffer,
+					out_data, out_index,
+					js->ir_pre, count);
+
+	return status;
+}
+
+int altera_drscan(struct altera_state *astate,
+				u32 count,
+				u8 *tdi_data,
+				u32 start_index)
+/* Shifts data into data register (ignoring output data) */
+{
+	struct altera_jtag *js = &astate->js;
+	int start_code = 0;
+	u32 alloc_chars = 0;
+	u32 shift_count = js->dr_pre + count + js->dr_post;
+	int status = 0;
+	enum altera_jtag_state start_state = ILLEGAL_JTAG_STATE;
+
+	switch (js->jtag_state) {
+	case ILLEGAL_JTAG_STATE:
+	case RESET:
+	case IDLE:
+		start_code = 0;
+		start_state = IDLE;
+		break;
+
+	case DRSELECT:
+	case DRCAPTURE:
+	case DRSHIFT:
+	case DREXIT1:
+	case DRPAUSE:
+	case DREXIT2:
+	case DRUPDATE:
+		start_code = 1;
+		start_state = DRPAUSE;
+		break;
+
+	case IRSELECT:
+	case IRCAPTURE:
+	case IRSHIFT:
+	case IREXIT1:
+	case IRPAUSE:
+	case IREXIT2:
+	case IRUPDATE:
+		start_code = 2;
+		start_state = IRPAUSE;
+		break;
+
+	default:
+		status = -EREMOTEIO;
+		break;
+	}
+
+	if (status == 0)
+		if (js->jtag_state != start_state)
+			status = altera_goto_jstate(astate, start_state);
+
+	if (status == 0) {
+		if (shift_count > js->dr_length) {
+			alloc_chars = (shift_count + 7) >> 3;
+			kfree(js->dr_buffer);
+			js->dr_buffer = (u8 *)alt_malloc(alloc_chars);
+			if (js->dr_buffer == NULL)
+				status = -ENOMEM;
+			else
+				js->dr_length = alloc_chars * 8;
+
+		}
+	}
+
+	if (status == 0) {
+		/*
+		 * Copy preamble data, DR data,
+		 * and postamble data into a buffer
+		 */
+		altera_concatenate_data(js->dr_buffer,
+					js->dr_pre_data,
+					js->dr_pre,
+					tdi_data,
+					start_index,
+					count,
+					js->dr_post_data,
+					js->dr_post);
+		/* Do the DRSCAN */
+		alt_jtag_drscan(astate, start_code, shift_count,
+				js->dr_buffer, NULL);
+		/* alt_jtag_drscan() always ends in DRPAUSE state */
+		js->jtag_state = DRPAUSE;
+	}
+
+	if (status == 0)
+		if (js->drstop_state != DRPAUSE)
+			status = altera_goto_jstate(astate, js->drstop_state);
+
+	return status;
+}
+
+int altera_swap_dr(struct altera_state *astate, u32 count,
+				u8 *in_data, u32 in_index,
+				u8 *out_data, u32 out_index)
+/* Shifts data into data register, capturing output data */
+{
+	struct altera_jtag *js = &astate->js;
+	int start_code = 0;
+	u32 alloc_chars = 0;
+	u32 shift_count = js->dr_pre + count + js->dr_post;
+	int status = 0;
+	enum altera_jtag_state start_state = ILLEGAL_JTAG_STATE;
+
+	switch (js->jtag_state) {
+	case ILLEGAL_JTAG_STATE:
+	case RESET:
+	case IDLE:
+		start_code = 0;
+		start_state = IDLE;
+		break;
+
+	case DRSELECT:
+	case DRCAPTURE:
+	case DRSHIFT:
+	case DREXIT1:
+	case DRPAUSE:
+	case DREXIT2:
+	case DRUPDATE:
+		start_code = 1;
+		start_state = DRPAUSE;
+		break;
+
+	case IRSELECT:
+	case IRCAPTURE:
+	case IRSHIFT:
+	case IREXIT1:
+	case IRPAUSE:
+	case IREXIT2:
+	case IRUPDATE:
+		start_code = 2;
+		start_state = IRPAUSE;
+		break;
+
+	default:
+		status = -EREMOTEIO;
+		break;
+	}
+
+	if (status == 0)
+		if (js->jtag_state != start_state)
+			status = altera_goto_jstate(astate, start_state);
+
+	if (status == 0) {
+		if (shift_count > js->dr_length) {
+			alloc_chars = (shift_count + 7) >> 3;
+			kfree(js->dr_buffer);
+			js->dr_buffer = (u8 *)alt_malloc(alloc_chars);
+
+			if (js->dr_buffer == NULL)
+				status = -ENOMEM;
+			else
+				js->dr_length = alloc_chars * 8;
+
+		}
+	}
+
+	if (status == 0) {
+		/*
+		 * Copy preamble data, DR data,
+		 * and postamble data into a buffer
+		 */
+		altera_concatenate_data(js->dr_buffer,
+				js->dr_pre_data,
+				js->dr_pre,
+				in_data,
+				in_index,
+				count,
+				js->dr_post_data,
+				js->dr_post);
+
+		/* Do the DRSCAN */
+		alt_jtag_drscan(astate,
+				start_code,
+				shift_count,
+				js->dr_buffer,
+				js->dr_buffer);
+
+		/* alt_jtag_drscan() always ends in DRPAUSE state */
+		js->jtag_state = DRPAUSE;
+	}
+
+	if (status == 0)
+		if (js->drstop_state != DRPAUSE)
+			status = altera_goto_jstate(astate, js->drstop_state);
+
+	if (status == 0)
+		/* Now extract the returned data from the buffer */
+		altera_extract_target_data(js->dr_buffer,
+					out_data,
+					out_index,
+					js->dr_pre,
+					count);
+
+	return status;
+}
+
+void altera_free_buffers(struct altera_state *astate)
+{
+	struct altera_jtag *js = &astate->js;
+	/* If the JTAG interface was used, reset it to TLR */
+	if (js->jtag_state != ILLEGAL_JTAG_STATE)
+		altera_jreset_idle(astate);
+
+	kfree(js->dr_pre_data);
+	js->dr_pre_data = NULL;
+
+	kfree(js->dr_post_data);
+	js->dr_post_data = NULL;
+
+	kfree(js->dr_buffer);
+	js->dr_buffer = NULL;
+
+	kfree(js->ir_pre_data);
+	js->ir_pre_data = NULL;
+
+	kfree(js->ir_post_data);
+	js->ir_post_data = NULL;
+
+	kfree(js->ir_buffer);
+	js->ir_buffer = NULL;
+}
diff --git a/drivers/staging/altera-stapl/altera-jtag.h b/drivers/staging/altera-stapl/altera-jtag.h
new file mode 100644
index 0000000..2f97e36
--- /dev/null
+++ b/drivers/staging/altera-stapl/altera-jtag.h
@@ -0,0 +1,113 @@
+/*
+ * altera-jtag.h
+ *
+ * altera FPGA driver
+ *
+ * Copyright (C) Altera Corporation 1998-2001
+ * Copyright (C) 2010 NetUP Inc.
+ * Copyright (C) 2010 Igor M. Liplianin <liplianin@xxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef ALTERA_JTAG_H
+#define ALTERA_JTAG_H
+
+/* Function Prototypes */
+enum altera_jtag_state {
+	ILLEGAL_JTAG_STATE = -1,
+	RESET = 0,
+	IDLE = 1,
+	DRSELECT = 2,
+	DRCAPTURE = 3,
+	DRSHIFT = 4,
+	DREXIT1 = 5,
+	DRPAUSE = 6,
+	DREXIT2 = 7,
+	DRUPDATE = 8,
+	IRSELECT = 9,
+	IRCAPTURE = 10,
+	IRSHIFT = 11,
+	IREXIT1 = 12,
+	IRPAUSE = 13,
+	IREXIT2 = 14,
+	IRUPDATE = 15
+
+};
+
+struct altera_jtag {
+	/* Global variable to store the current JTAG state */
+	enum altera_jtag_state jtag_state;
+
+	/* Store current stop-state for DR and IR scan commands */
+	enum altera_jtag_state drstop_state;
+	enum altera_jtag_state irstop_state;
+
+	/* Store current padding values */
+	u32 dr_pre;
+	u32 dr_post;
+	u32 ir_pre;
+	u32 ir_post;
+	u32 dr_length;
+	u32 ir_length;
+	u8 *dr_pre_data;
+	u8 *dr_post_data;
+	u8 *ir_pre_data;
+	u8 *ir_post_data;
+	u8 *dr_buffer;
+	u8 *ir_buffer;
+};
+
+#define ALTERA_STACK_SIZE 128
+#define ALTERA_MESSAGE_LENGTH 1024
+
+struct altera_state {
+	struct altera_config	*config;
+	struct altera_jtag	js;
+	char			msg_buff[ALTERA_MESSAGE_LENGTH + 1];
+	long			stack[ALTERA_STACK_SIZE];
+};
+
+int altera_jinit(struct altera_state *astate);
+int altera_set_drstop(struct altera_jtag *js, enum altera_jtag_state state);
+int altera_set_irstop(struct altera_jtag *js, enum altera_jtag_state state);
+int altera_set_dr_pre(struct altera_jtag *js, u32 count, u32 start_index,
+				u8 *preamble_data);
+int altera_set_ir_pre(struct altera_jtag *js, u32 count, u32 start_index,
+				u8 *preamble_data);
+int altera_set_dr_post(struct altera_jtag *js, u32 count, u32 start_index,
+				u8 *postamble_data);
+int altera_set_ir_post(struct altera_jtag *js, u32 count, u32 start_index,
+				u8 *postamble_data);
+int altera_goto_jstate(struct altera_state *astate,
+				enum altera_jtag_state state);
+int altera_wait_cycles(struct altera_state *astate, s32 cycles,
+				enum altera_jtag_state wait_state);
+int altera_wait_msecs(struct altera_state *astate, s32 microseconds,
+				enum altera_jtag_state wait_state);
+int altera_irscan(struct altera_state *astate, u32 count,
+				u8 *tdi_data, u32 start_index);
+int altera_swap_ir(struct altera_state *astate,
+				u32 count, u8 *in_data,
+				u32 in_index, u8 *out_data,
+				u32 out_index);
+int altera_drscan(struct altera_state *astate, u32 count,
+				u8 *tdi_data, u32 start_index);
+int altera_swap_dr(struct altera_state *astate, u32 count,
+				u8 *in_data, u32 in_index,
+				u8 *out_data, u32 out_index);
+void altera_free_buffers(struct altera_state *astate);
+#endif /* ALTERA_JTAG_H */
diff --git a/drivers/staging/altera-stapl/altera-lpt.c b/drivers/staging/altera-stapl/altera-lpt.c
new file mode 100644
index 0000000..91456a0
--- /dev/null
+++ b/drivers/staging/altera-stapl/altera-lpt.c
@@ -0,0 +1,70 @@
+/*
+ * altera-lpt.c
+ *
+ * altera FPGA driver
+ *
+ * Copyright (C) Altera Corporation 1998-2001
+ * Copyright (C) 2010 NetUP Inc.
+ * Copyright (C) 2010 Abylay Ospan <aospan@xxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include "altera-exprt.h"
+
+static int lpt_hardware_initialized;
+
+static void byteblaster_write(int port, int data)
+{
+	outb((u8)data, (u16)(port + 0x378));
+};
+
+static int byteblaster_read(int port)
+{
+	int data = 0;
+	data = inb((u16)(port + 0x378));
+	return data & 0xff;
+};
+
+int netup_jtag_io_lpt(void *device, int tms, int tdi, int read_tdo)
+{
+	int data = 0;
+	int tdo = 0;
+	int initial_lpt_ctrl = 0;
+
+	if (!lpt_hardware_initialized) {
+		initial_lpt_ctrl = byteblaster_read(2);
+		byteblaster_write(2, (initial_lpt_ctrl | 0x02) & 0xdf);
+		lpt_hardware_initialized = 1;
+	}
+
+	data = ((tdi ? 0x40 : 0) | (tms ? 0x02 : 0));
+
+	byteblaster_write(0, data);
+
+	if (read_tdo) {
+		tdo = byteblaster_read(1);
+		tdo = ((tdo & 0x80) ? 0 : 1);
+	}
+
+	byteblaster_write(0, data | 0x01);
+
+	byteblaster_write(0, data);
+
+	return tdo;
+}
diff --git a/drivers/staging/altera-stapl/altera.c b/drivers/staging/altera-stapl/altera.c
new file mode 100644
index 0000000..05aad35
--- /dev/null
+++ b/drivers/staging/altera-stapl/altera.c
@@ -0,0 +1,2527 @@
+/*
+ * altera.c
+ *
+ * altera FPGA driver
+ *
+ * Copyright (C) Altera Corporation 1998-2001
+ * Copyright (C) 2010,2011 NetUP Inc.
+ * Copyright (C) 2010,2011 Igor M. Liplianin <liplianin@xxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <asm/unaligned.h>
+#include <linux/ctype.h>
+#include <linux/string.h>
+#include <linux/firmware.h>
+#include <linux/slab.h>
+#include <staging/altera.h>
+#include "altera-exprt.h"
+#include "altera-jtag.h"
+
+static int debug = 1;
+module_param(debug, int, 0644);
+MODULE_PARM_DESC(debug, "enable debugging information");
+
+MODULE_DESCRIPTION("altera FPGA kernel module");
+MODULE_AUTHOR("Igor M. Liplianin  <liplianin@xxxxxxxx>");
+MODULE_LICENSE("GPL");
+
+#define dprintk(args...) \
+	if (debug) { \
+		printk(KERN_DEBUG args); \
+	}
+
+enum altera_fpga_opcode {
+	OP_NOP = 0,
+	OP_DUP,
+	OP_SWP,
+	OP_ADD,
+	OP_SUB,
+	OP_MULT,
+	OP_DIV,
+	OP_MOD,
+	OP_SHL,
+	OP_SHR,
+	OP_NOT,
+	OP_AND,
+	OP_OR,
+	OP_XOR,
+	OP_INV,
+	OP_GT,
+	OP_LT,
+	OP_RET,
+	OP_CMPS,
+	OP_PINT,
+	OP_PRNT,
+	OP_DSS,
+	OP_DSSC,
+	OP_ISS,
+	OP_ISSC,
+	OP_DPR = 0x1c,
+	OP_DPRL,
+	OP_DPO,
+	OP_DPOL,
+	OP_IPR,
+	OP_IPRL,
+	OP_IPO,
+	OP_IPOL,
+	OP_PCHR,
+	OP_EXIT,
+	OP_EQU,
+	OP_POPT,
+	OP_ABS = 0x2c,
+	OP_BCH0,
+	OP_PSH0 = 0x2f,
+	OP_PSHL = 0x40,
+	OP_PSHV,
+	OP_JMP,
+	OP_CALL,
+	OP_NEXT,
+	OP_PSTR,
+	OP_SINT = 0x47,
+	OP_ST,
+	OP_ISTP,
+	OP_DSTP,
+	OP_SWPN,
+	OP_DUPN,
+	OP_POPV,
+	OP_POPE,
+	OP_POPA,
+	OP_JMPZ,
+	OP_DS,
+	OP_IS,
+	OP_DPRA,
+	OP_DPOA,
+	OP_IPRA,
+	OP_IPOA,
+	OP_EXPT,
+	OP_PSHE,
+	OP_PSHA,
+	OP_DYNA,
+	OP_EXPV = 0x5c,
+	OP_COPY = 0x80,
+	OP_REVA,
+	OP_DSC,
+	OP_ISC,
+	OP_WAIT,
+	OP_VS,
+	OP_CMPA = 0xc0,
+	OP_VSC,
+};
+
+struct altera_procinfo {
+	char			*name;
+	u8			attrs;
+	struct altera_procinfo	*next;
+};
+
+/* This function checks if enough parameters are available on the stack. */
+static int altera_check_stack(int stack_ptr, int count, int *status)
+{
+	if (stack_ptr < count) {
+		*status = -EOVERFLOW;
+		return 0;
+	}
+
+	return 1;
+}
+
+static void altera_export_int(char *key, s32 value)
+{
+	dprintk("Export: key = \"%s\", value = %d\n", key, value);
+}
+
+#define HEX_LINE_CHARS 72
+#define HEX_LINE_BITS (HEX_LINE_CHARS * 4)
+
+static void altera_export_bool_array(char *key, u8 *data, s32 count)
+{
+	char string[HEX_LINE_CHARS + 1];
+	s32 i, offset;
+	u32 size, line, lines, linebits, value, j, k;
+
+	if (count > HEX_LINE_BITS) {
+		dprintk("Export: key = \"%s\", %d bits, value = HEX\n",
+							key, count);
+		lines = (count + (HEX_LINE_BITS - 1)) / HEX_LINE_BITS;
+
+		for (line = 0; line < lines; ++line) {
+			if (line < (lines - 1)) {
+				linebits = HEX_LINE_BITS;
+				size = HEX_LINE_CHARS;
+				offset = count - ((line + 1) * HEX_LINE_BITS);
+			} else {
+				linebits =
+					count - ((lines - 1) * HEX_LINE_BITS);
+				size = (linebits + 3) / 4;
+				offset = 0L;
+			}
+
+			string[size] = '\0';
+			j = size - 1;
+			value = 0;
+
+			for (k = 0; k < linebits; ++k) {
+				i = k + offset;
+				if (data[i >> 3] & (1 << (i & 7)))
+					value |= (1 << (i & 3));
+				if ((i & 3) == 3) {
+					sprintf(&string[j], "%1x", value);
+					value = 0;
+					--j;
+				}
+			}
+			if ((k & 3) > 0)
+				sprintf(&string[j], "%1x", value);
+
+			dprintk("%s\n", string);
+		}
+
+	} else {
+		size = (count + 3) / 4;
+		string[size] = '\0';
+		j = size - 1;
+		value = 0;
+
+		for (i = 0; i < count; ++i) {
+			if (data[i >> 3] & (1 << (i & 7)))
+				value |= (1 << (i & 3));
+			if ((i & 3) == 3) {
+				sprintf(&string[j], "%1x", value);
+				value = 0;
+				--j;
+			}
+		}
+		if ((i & 3) > 0)
+			sprintf(&string[j], "%1x", value);
+
+		dprintk("Export: key = \"%s\", %d bits, value = HEX %s\n",
+			key, count, string);
+	}
+}
+
+static int altera_execute(struct altera_state *astate,
+				u8 *p,
+				s32 program_size,
+				s32 *error_address,
+				int *exit_code,
+				int *format_version)
+{
+	struct altera_config *aconf = astate->config;
+	char *msg_buff = astate->msg_buff;
+	long *stack = astate->stack;
+	int status = 0;
+	u32 first_word = 0L;
+	u32 action_table = 0L;
+	u32 proc_table = 0L;
+	u32 str_table = 0L;
+	u32 sym_table = 0L;
+	u32 data_sect = 0L;
+	u32 code_sect = 0L;
+	u32 debug_sect = 0L;
+	u32 action_count = 0L;
+	u32 proc_count = 0L;
+	u32 sym_count = 0L;
+	long *vars = NULL;
+	s32 *var_size = NULL;
+	char *attrs = NULL;
+	u8 *proc_attributes = NULL;
+	u32 pc;
+	u32 opcode_address;
+	u32 args[3];
+	u32 opcode;
+	u32 name_id;
+	u8 charbuf[4];
+	long long_tmp;
+	u32 variable_id;
+	u8 *charptr_tmp;
+	u8 *charptr_tmp2;
+	long *longptr_tmp;
+	int version = 0;
+	int delta = 0;
+	int stack_ptr = 0;
+	u32 arg_count;
+	int done = 0;
+	int bad_opcode = 0;
+	u32 count;
+	u32 index;
+	u32 index2;
+	s32 long_count;
+	s32 long_idx;
+	s32 long_idx2;
+	u32 i;
+	u32 j;
+	u32 uncomp_size;
+	u32 offset;
+	u32 value;
+	int current_proc = 0;
+	int reverse;
+
+	char *name;
+
+	dprintk("%s\n", __func__);
+
+	/* Read header information */
+	if (program_size > 52L) {
+		first_word    = get_unaligned_be32(&p[0]);
+		version = (first_word & 1L);
+		*format_version = version + 1;
+		delta = version * 8;
+
+		action_table  = get_unaligned_be32(&p[4]);
+		proc_table    = get_unaligned_be32(&p[8]);
+		str_table  = get_unaligned_be32(&p[4 + delta]);
+		sym_table  = get_unaligned_be32(&p[16 + delta]);
+		data_sect  = get_unaligned_be32(&p[20 + delta]);
+		code_sect  = get_unaligned_be32(&p[24 + delta]);
+		debug_sect = get_unaligned_be32(&p[28 + delta]);
+		action_count  = get_unaligned_be32(&p[40 + delta]);
+		proc_count    = get_unaligned_be32(&p[44 + delta]);
+		sym_count  = get_unaligned_be32(&p[48 + (2 * delta)]);
+	}
+
+	if ((first_word != 0x4A414D00L) && (first_word != 0x4A414D01L)) {
+		done = 1;
+		status = -EIO;
+		goto exit_done;
+	}
+
+	if (sym_count <= 0)
+		goto exit_done;
+
+	vars = kzalloc(sym_count * sizeof(long), GFP_KERNEL);
+
+	if (vars == NULL)
+		status = -ENOMEM;
+
+	if (status == 0) {
+		var_size = kzalloc(sym_count * sizeof(s32), GFP_KERNEL);
+
+		if (var_size == NULL)
+			status = -ENOMEM;
+	}
+
+	if (status == 0) {
+		attrs = kzalloc(sym_count, GFP_KERNEL);
+
+		if (attrs == NULL)
+			status = -ENOMEM;
+	}
+
+	if ((status == 0) && (version > 0)) {
+		proc_attributes = kzalloc(proc_count, GFP_KERNEL);
+
+		if (proc_attributes == NULL)
+			status = -ENOMEM;
+	}
+
+	if (status != 0)
+		goto exit_done;
+
+	delta = version * 2;
+
+	for (i = 0; i < sym_count; ++i) {
+		offset = (sym_table + ((11 + delta) * i));
+
+		value = get_unaligned_be32(&p[offset + 3 + delta]);
+
+		attrs[i] = p[offset];
+
+		/*
+		 * use bit 7 of attribute byte to indicate that
+		 * this buffer was dynamically allocated
+		 * and should be freed later
+		 */
+		attrs[i] &= 0x7f;
+
+		var_size[i] = get_unaligned_be32(&p[offset + 7 + delta]);
+
+		/*
+		 * Attribute bits:
+		 * bit 0: 0 = read-only, 1 = read-write
+		 * bit 1: 0 = not compressed, 1 = compressed
+		 * bit 2: 0 = not initialized, 1 = initialized
+		 * bit 3: 0 = scalar, 1 = array
+		 * bit 4: 0 = Boolean, 1 = integer
+		 * bit 5: 0 = declared variable,
+		 *	1 = compiler created temporary variable
+		 */
+
+		if ((attrs[i] & 0x0c) == 0x04)
+			/* initialized scalar variable */
+			vars[i] = value;
+		else if ((attrs[i] & 0x1e) == 0x0e) {
+			/* initialized compressed Boolean array */
+			uncomp_size = get_unaligned_le32(&p[data_sect + value]);
+
+			/* allocate a buffer for the uncompressed data */
+			vars[i] = (long)kzalloc(uncomp_size, GFP_KERNEL);
+			if (vars[i] == 0L)
+				status = -ENOMEM;
+			else {
+				/* set flag so buffer will be freed later */
+				attrs[i] |= 0x80;
+
+				/* uncompress the data */
+				if (altera_shrink(&p[data_sect + value],
+						var_size[i],
+						(u8 *)vars[i],
+						uncomp_size,
+						version) != uncomp_size)
+					/* decompression failed */
+					status = -EIO;
+				else
+					var_size[i] = uncomp_size * 8L;
+
+			}
+		} else if ((attrs[i] & 0x1e) == 0x0c) {
+			/* initialized Boolean array */
+			vars[i] = value + data_sect + (long)p;
+		} else if ((attrs[i] & 0x1c) == 0x1c) {
+			/* initialized integer array */
+			vars[i] = value + data_sect;
+		} else if ((attrs[i] & 0x0c) == 0x08) {
+			/* uninitialized array */
+
+			/* flag attrs so that memory is freed */
+			attrs[i] |= 0x80;
+
+			if (var_size[i] > 0) {
+				u32 size;
+
+				if (attrs[i] & 0x10)
+					/* integer array */
+					size = (var_size[i] * sizeof(s32));
+				else
+					/* Boolean array */
+					size = ((var_size[i] + 7L) / 8L);
+
+				vars[i] = (long)kzalloc(size, GFP_KERNEL);
+
+				if (vars[i] == 0) {
+					status = -ENOMEM;
+				} else {
+					/* zero out memory */
+					for (j = 0; j < size; ++j)
+						((u8 *)(vars[i]))[j] = 0;
+
+				}
+			} else
+				vars[i] = 0;
+
+		} else
+			vars[i] = 0;
+
+	}
+
+exit_done:
+	if (status != 0)
+		done = 1;
+
+	altera_jinit(astate);
+
+	pc = code_sect;
+	msg_buff[0] = '\0';
+
+	/*
+	 * For JBC version 2, we will execute the procedures corresponding to
+	 * the selected ACTION
+	 */
+	if (version > 0) {
+		if (aconf->action == NULL) {
+			status = -EINVAL;
+			done = 1;
+		} else {
+			int action_found = 0;
+			for (i = 0; (i < action_count) && !action_found; ++i) {
+				name_id = get_unaligned_be32(&p[action_table +
+								(12 * i)]);
+
+				name = &p[str_table + name_id];
+
+				if (strnicmp(aconf->action, name, strlen(name)) == 0) {
+					action_found = 1;
+					current_proc =
+						get_unaligned_be32(&p[action_table +
+								(12 * i) + 8]);
+				}
+			}
+
+			if (!action_found) {
+				status = -EINVAL;
+				done = 1;
+			}
+		}
+
+		if (status == 0) {
+			int first_time = 1;
+			i = current_proc;
+			while ((i != 0) || first_time) {
+				first_time = 0;
+				/* check procedure attribute byte */
+				proc_attributes[i] =
+						(p[proc_table +
+								(13 * i) + 8] &
+									0x03);
+
+				/*
+				 * BIT0 - OPTIONAL
+				 * BIT1 - RECOMMENDED
+				 * BIT6 - FORCED OFF
+				 * BIT7 - FORCED ON
+				 */
+
+				i = get_unaligned_be32(&p[proc_table +
+							(13 * i) + 4]);
+			}
+
+			/*
+			 * Set current_proc to the first procedure
+			 * to be executed
+			 */
+			i = current_proc;
+			while ((i != 0) &&
+				((proc_attributes[i] == 1) ||
+				((proc_attributes[i] & 0xc0) == 0x40))) {
+				i = get_unaligned_be32(&p[proc_table +
+							(13 * i) + 4]);
+			}
+
+			if ((i != 0) || ((i == 0) && (current_proc == 0) &&
+				((proc_attributes[0] != 1) &&
+				((proc_attributes[0] & 0xc0) != 0x40)))) {
+				current_proc = i;
+				pc = code_sect +
+					get_unaligned_be32(&p[proc_table +
+								(13 * i) + 9]);
+				if ((pc < code_sect) || (pc >= debug_sect))
+					status = -ERANGE;
+			} else
+				/* there are no procedures to execute! */
+				done = 1;
+
+		}
+	}
+
+	msg_buff[0] = '\0';
+
+	while (!done) {
+		opcode = (p[pc] & 0xff);
+		opcode_address = pc;
+		++pc;
+
+		if (debug > 1)
+			printk("opcode: %02x\n", opcode);
+
+		arg_count = (opcode >> 6) & 3;
+		for (i = 0; i < arg_count; ++i) {
+			args[i] = get_unaligned_be32(&p[pc]);
+			pc += 4;
+		}
+
+		switch (opcode) {
+		case OP_NOP:
+			break;
+		case OP_DUP:
+			if (altera_check_stack(stack_ptr, 1, &status)) {
+				stack[stack_ptr] = stack[stack_ptr - 1];
+				++stack_ptr;
+			}
+			break;
+		case OP_SWP:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				long_tmp = stack[stack_ptr - 2];
+				stack[stack_ptr - 2] = stack[stack_ptr - 1];
+				stack[stack_ptr - 1] = long_tmp;
+			}
+			break;
+		case OP_ADD:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] += stack[stack_ptr];
+			}
+			break;
+		case OP_SUB:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] -= stack[stack_ptr];
+			}
+			break;
+		case OP_MULT:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] *= stack[stack_ptr];
+			}
+			break;
+		case OP_DIV:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] /= stack[stack_ptr];
+			}
+			break;
+		case OP_MOD:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] %= stack[stack_ptr];
+			}
+			break;
+		case OP_SHL:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] <<= stack[stack_ptr];
+			}
+			break;
+		case OP_SHR:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] >>= stack[stack_ptr];
+			}
+			break;
+		case OP_NOT:
+			if (altera_check_stack(stack_ptr, 1, &status))
+				stack[stack_ptr - 1] ^= (-1L);
+
+			break;
+		case OP_AND:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] &= stack[stack_ptr];
+			}
+			break;
+		case OP_OR:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] |= stack[stack_ptr];
+			}
+			break;
+		case OP_XOR:
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				--stack_ptr;
+				stack[stack_ptr - 1] ^= stack[stack_ptr];
+			}
+			break;
+		case OP_INV:
+			if (!altera_check_stack(stack_ptr, 1, &status))
+				break;
+			stack[stack_ptr - 1] = stack[stack_ptr - 1] ? 0L : 1L;
+			break;
+		case OP_GT:
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			--stack_ptr;
+			stack[stack_ptr - 1] =
+				(stack[stack_ptr - 1] > stack[stack_ptr]) ?
+									1L : 0L;
+
+			break;
+		case OP_LT:
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			--stack_ptr;
+			stack[stack_ptr - 1] =
+				(stack[stack_ptr - 1] < stack[stack_ptr]) ?
+									1L : 0L;
+
+			break;
+		case OP_RET:
+			if ((version > 0) && (stack_ptr == 0)) {
+				/*
+				 * We completed one of the main procedures
+				 * of an ACTION.
+				 * Find the next procedure
+				 * to be executed and jump to it.
+				 * If there are no more procedures, then EXIT.
+				 */
+				i = get_unaligned_be32(&p[proc_table +
+						(13 * current_proc) + 4]);
+				while ((i != 0) &&
+					((proc_attributes[i] == 1) ||
+					((proc_attributes[i] & 0xc0) == 0x40)))
+					i = get_unaligned_be32(&p[proc_table +
+								(13 * i) + 4]);
+
+				if (i == 0) {
+					/* no procedures to execute! */
+					done = 1;
+					*exit_code = 0;	/* success */
+				} else {
+					current_proc = i;
+					pc = code_sect + get_unaligned_be32(
+								&p[proc_table +
+								(13 * i) + 9]);
+					if ((pc < code_sect) ||
+					    (pc >= debug_sect))
+						status = -ERANGE;
+				}
+
+			} else
+				if (altera_check_stack(stack_ptr, 1, &status)) {
+					pc = stack[--stack_ptr] + code_sect;
+					if ((pc <= code_sect) ||
+					    (pc >= debug_sect))
+						status = -ERANGE;
+
+				}
+
+			break;
+		case OP_CMPS:
+			/*
+			 * Array short compare
+			 * ...stack 0 is source 1 value
+			 * ...stack 1 is source 2 value
+			 * ...stack 2 is mask value
+			 * ...stack 3 is count
+			 */
+			if (altera_check_stack(stack_ptr, 4, &status)) {
+				s32 a = stack[--stack_ptr];
+				s32 b = stack[--stack_ptr];
+				long_tmp = stack[--stack_ptr];
+				count = stack[stack_ptr - 1];
+
+				if ((count < 1) || (count > 32))
+					status = -ERANGE;
+				else {
+					long_tmp &= ((-1L) >> (32 - count));
+
+					stack[stack_ptr - 1] =
+					((a & long_tmp) == (b & long_tmp))
+								? 1L : 0L;
+				}
+			}
+			break;
+		case OP_PINT:
+			/*
+			 * PRINT add integer
+			 * ...stack 0 is integer value
+			 */
+			if (!altera_check_stack(stack_ptr, 1, &status))
+				break;
+			sprintf(&msg_buff[strlen(msg_buff)],
+					"%ld", stack[--stack_ptr]);
+			break;
+		case OP_PRNT:
+			/* PRINT finish */
+			if (debug)
+				printk(msg_buff, "\n");
+
+			msg_buff[0] = '\0';
+			break;
+		case OP_DSS:
+			/*
+			 * DRSCAN short
+			 * ...stack 0 is scan data
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			long_tmp = stack[--stack_ptr];
+			count = stack[--stack_ptr];
+			put_unaligned_le32(long_tmp, &charbuf[0]);
+			status = altera_drscan(astate, count, charbuf, 0);
+			break;
+		case OP_DSSC:
+			/*
+			 * DRSCAN short with capture
+			 * ...stack 0 is scan data
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			long_tmp = stack[--stack_ptr];
+			count = stack[stack_ptr - 1];
+			put_unaligned_le32(long_tmp, &charbuf[0]);
+			status = altera_swap_dr(astate, count, charbuf,
+							0, charbuf, 0);
+			stack[stack_ptr - 1] = get_unaligned_le32(&charbuf[0]);
+			break;
+		case OP_ISS:
+			/*
+			 * IRSCAN short
+			 * ...stack 0 is scan data
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			long_tmp = stack[--stack_ptr];
+			count = stack[--stack_ptr];
+			put_unaligned_le32(long_tmp, &charbuf[0]);
+			status = altera_irscan(astate, count, charbuf, 0);
+			break;
+		case OP_ISSC:
+			/*
+			 * IRSCAN short with capture
+			 * ...stack 0 is scan data
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			long_tmp = stack[--stack_ptr];
+			count = stack[stack_ptr - 1];
+			put_unaligned_le32(long_tmp, &charbuf[0]);
+			status = altera_swap_ir(astate, count, charbuf,
+							0, charbuf, 0);
+			stack[stack_ptr - 1] = get_unaligned_le32(&charbuf[0]);
+			break;
+		case OP_DPR:
+			if (!altera_check_stack(stack_ptr, 1, &status))
+				break;
+			count = stack[--stack_ptr];
+			status = altera_set_dr_pre(&astate->js, count, 0, NULL);
+			break;
+		case OP_DPRL:
+			/*
+			 * DRPRE with literal data
+			 * ...stack 0 is count
+			 * ...stack 1 is literal data
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			count = stack[--stack_ptr];
+			long_tmp = stack[--stack_ptr];
+			put_unaligned_le32(long_tmp, &charbuf[0]);
+			status = altera_set_dr_pre(&astate->js, count, 0,
+						charbuf);
+			break;
+		case OP_DPO:
+			/*
+			 * DRPOST
+			 * ...stack 0 is count
+			 */
+			if (altera_check_stack(stack_ptr, 1, &status)) {
+				count = stack[--stack_ptr];
+				status = altera_set_dr_post(&astate->js, count,
+								0, NULL);
+			}
+			break;
+		case OP_DPOL:
+			/*
+			 * DRPOST with literal data
+			 * ...stack 0 is count
+			 * ...stack 1 is literal data
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			count = stack[--stack_ptr];
+			long_tmp = stack[--stack_ptr];
+			put_unaligned_le32(long_tmp, &charbuf[0]);
+			status = altera_set_dr_post(&astate->js, count, 0,
+							charbuf);
+			break;
+		case OP_IPR:
+			if (altera_check_stack(stack_ptr, 1, &status)) {
+				count = stack[--stack_ptr];
+				status = altera_set_ir_pre(&astate->js, count,
+								0, NULL);
+			}
+			break;
+		case OP_IPRL:
+			/*
+			 * IRPRE with literal data
+			 * ...stack 0 is count
+			 * ...stack 1 is literal data
+			 */
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				count = stack[--stack_ptr];
+				long_tmp = stack[--stack_ptr];
+				put_unaligned_le32(long_tmp, &charbuf[0]);
+				status = altera_set_ir_pre(&astate->js, count,
+							0, charbuf);
+			}
+			break;
+		case OP_IPO:
+			/*
+			 * IRPOST
+			 * ...stack 0 is count
+			 */
+			if (altera_check_stack(stack_ptr, 1, &status)) {
+				count = stack[--stack_ptr];
+				status = altera_set_ir_post(&astate->js, count,
+							0, NULL);
+			}
+			break;
+		case OP_IPOL:
+			/*
+			 * IRPOST with literal data
+			 * ...stack 0 is count
+			 * ...stack 1 is literal data
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			count = stack[--stack_ptr];
+			long_tmp = stack[--stack_ptr];
+			put_unaligned_le32(long_tmp, &charbuf[0]);
+			status = altera_set_ir_post(&astate->js, count, 0,
+							charbuf);
+			break;
+		case OP_PCHR:
+			if (altera_check_stack(stack_ptr, 1, &status)) {
+				u8 ch;
+				count = strlen(msg_buff);
+				ch = (char) stack[--stack_ptr];
+				if ((ch < 1) || (ch > 127)) {
+					/*
+					 * character code out of range
+					 * instead of flagging an error,
+					 * force the value to 127
+					 */
+					ch = 127;
+				}
+				msg_buff[count] = ch;
+				msg_buff[count + 1] = '\0';
+			}
+			break;
+		case OP_EXIT:
+			if (altera_check_stack(stack_ptr, 1, &status))
+				*exit_code = stack[--stack_ptr];
+
+			done = 1;
+			break;
+		case OP_EQU:
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			--stack_ptr;
+			stack[stack_ptr - 1] =
+				(stack[stack_ptr - 1] == stack[stack_ptr]) ?
+									1L : 0L;
+			break;
+		case OP_POPT:
+			if (altera_check_stack(stack_ptr, 1, &status))
+				--stack_ptr;
+
+			break;
+		case OP_ABS:
+			if (!altera_check_stack(stack_ptr, 1, &status))
+				break;
+			if (stack[stack_ptr - 1] < 0)
+				stack[stack_ptr - 1] = 0 - stack[stack_ptr - 1];
+
+			break;
+		case OP_BCH0:
+			/*
+			 * Batch operation 0
+			 * SWP
+			 * SWPN 7
+			 * SWP
+			 * SWPN 6
+			 * DUPN 8
+			 * SWPN 2
+			 * SWP
+			 * DUPN 6
+			 * DUPN 6
+			 */
+
+			/* SWP  */
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				long_tmp = stack[stack_ptr - 2];
+				stack[stack_ptr - 2] = stack[stack_ptr - 1];
+				stack[stack_ptr - 1] = long_tmp;
+			}
+
+			/* SWPN 7 */
+			index = 7 + 1;
+			if (altera_check_stack(stack_ptr, index, &status)) {
+				long_tmp = stack[stack_ptr - index];
+				stack[stack_ptr - index] = stack[stack_ptr - 1];
+				stack[stack_ptr - 1] = long_tmp;
+			}
+
+			/* SWP  */
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				long_tmp = stack[stack_ptr - 2];
+				stack[stack_ptr - 2] = stack[stack_ptr - 1];
+				stack[stack_ptr - 1] = long_tmp;
+			}
+
+			/* SWPN 6 */
+			index = 6 + 1;
+			if (altera_check_stack(stack_ptr, index, &status)) {
+				long_tmp = stack[stack_ptr - index];
+				stack[stack_ptr - index] = stack[stack_ptr - 1];
+				stack[stack_ptr - 1] = long_tmp;
+			}
+
+			/* DUPN 8 */
+			index = 8 + 1;
+			if (altera_check_stack(stack_ptr, index, &status)) {
+				stack[stack_ptr] = stack[stack_ptr - index];
+				++stack_ptr;
+			}
+
+			/* SWPN 2 */
+			index = 2 + 1;
+			if (altera_check_stack(stack_ptr, index, &status)) {
+				long_tmp = stack[stack_ptr - index];
+				stack[stack_ptr - index] = stack[stack_ptr - 1];
+				stack[stack_ptr - 1] = long_tmp;
+			}
+
+			/* SWP  */
+			if (altera_check_stack(stack_ptr, 2, &status)) {
+				long_tmp = stack[stack_ptr - 2];
+				stack[stack_ptr - 2] = stack[stack_ptr - 1];
+				stack[stack_ptr - 1] = long_tmp;
+			}
+
+			/* DUPN 6 */
+			index = 6 + 1;
+			if (altera_check_stack(stack_ptr, index, &status)) {
+				stack[stack_ptr] = stack[stack_ptr - index];
+				++stack_ptr;
+			}
+
+			/* DUPN 6 */
+			index = 6 + 1;
+			if (altera_check_stack(stack_ptr, index, &status)) {
+				stack[stack_ptr] = stack[stack_ptr - index];
+				++stack_ptr;
+			}
+			break;
+		case OP_PSH0:
+			stack[stack_ptr++] = 0;
+			break;
+		case OP_PSHL:
+			stack[stack_ptr++] = (s32) args[0];
+			break;
+		case OP_PSHV:
+			stack[stack_ptr++] = vars[args[0]];
+			break;
+		case OP_JMP:
+			pc = args[0] + code_sect;
+			if ((pc < code_sect) || (pc >= debug_sect))
+				status = -ERANGE;
+			break;
+		case OP_CALL:
+			stack[stack_ptr++] = pc;
+			pc = args[0] + code_sect;
+			if ((pc < code_sect) || (pc >= debug_sect))
+				status = -ERANGE;
+			break;
+		case OP_NEXT:
+			/*
+			 * Process FOR / NEXT loop
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is step value
+			 * ...stack 1 is end value
+			 * ...stack 2 is top address
+			 */
+			if (altera_check_stack(stack_ptr, 3, &status)) {
+				s32 step = stack[stack_ptr - 1];
+				s32 end = stack[stack_ptr - 2];
+				s32 top = stack[stack_ptr - 3];
+				s32 iterator = vars[args[0]];
+				int break_out = 0;
+
+				if (step < 0) {
+					if (iterator <= end)
+						break_out = 1;
+				} else if (iterator >= end)
+					break_out = 1;
+
+				if (break_out) {
+					stack_ptr -= 3;
+				} else {
+					vars[args[0]] = iterator + step;
+					pc = top + code_sect;
+					if ((pc < code_sect) ||
+					    (pc >= debug_sect))
+						status = -ERANGE;
+				}
+			}
+			break;
+		case OP_PSTR:
+			/*
+			 * PRINT add string
+			 * ...argument 0 is string ID
+			 */
+			count = strlen(msg_buff);
+			strlcpy(&msg_buff[count],
+				&p[str_table + args[0]],
+				ALTERA_MESSAGE_LENGTH - count);
+			break;
+		case OP_SINT:
+			/*
+			 * STATE intermediate state
+			 * ...argument 0 is state code
+			 */
+			status = altera_goto_jstate(astate, args[0]);
+			break;
+		case OP_ST:
+			/*
+			 * STATE final state
+			 * ...argument 0 is state code
+			 */
+			status = altera_goto_jstate(astate, args[0]);
+			break;
+		case OP_ISTP:
+			/*
+			 * IRSTOP state
+			 * ...argument 0 is state code
+			 */
+			status = altera_set_irstop(&astate->js, args[0]);
+			break;
+		case OP_DSTP:
+			/*
+			 * DRSTOP state
+			 * ...argument 0 is state code
+			 */
+			status = altera_set_drstop(&astate->js, args[0]);
+			break;
+
+		case OP_SWPN:
+			/*
+			 * Exchange top with Nth stack value
+			 * ...argument 0 is 0-based stack entry
+			 * to swap with top element
+			 */
+			index = (args[0]) + 1;
+			if (altera_check_stack(stack_ptr, index, &status)) {
+				long_tmp = stack[stack_ptr - index];
+				stack[stack_ptr - index] = stack[stack_ptr - 1];
+				stack[stack_ptr - 1] = long_tmp;
+			}
+			break;
+		case OP_DUPN:
+			/*
+			 * Duplicate Nth stack value
+			 * ...argument 0 is 0-based stack entry to duplicate
+			 */
+			index = (args[0]) + 1;
+			if (altera_check_stack(stack_ptr, index, &status)) {
+				stack[stack_ptr] = stack[stack_ptr - index];
+				++stack_ptr;
+			}
+			break;
+		case OP_POPV:
+			/*
+			 * Pop stack into scalar variable
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is value
+			 */
+			if (altera_check_stack(stack_ptr, 1, &status))
+				vars[args[0]] = stack[--stack_ptr];
+
+			break;
+		case OP_POPE:
+			/*
+			 * Pop stack into integer array element
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is array index
+			 * ...stack 1 is value
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			variable_id = args[0];
+
+			/*
+			 * If variable is read-only,
+			 * convert to writable array
+			 */
+			if ((version > 0) &&
+				((attrs[variable_id] & 0x9c) == 0x1c)) {
+				/* Allocate a writable buffer for this array */
+				count = var_size[variable_id];
+				long_tmp = vars[variable_id];
+				longptr_tmp = kzalloc(count * sizeof(long),
+								GFP_KERNEL);
+				vars[variable_id] = (long)longptr_tmp;
+
+				if (vars[variable_id] == 0) {
+					status = -ENOMEM;
+					break;
+				}
+
+				/* copy previous contents into buffer */
+				for (i = 0; i < count; ++i) {
+					longptr_tmp[i] =
+						get_unaligned_be32(&p[long_tmp]);
+					long_tmp += sizeof(long);
+				}
+
+				/*
+				 * set bit 7 - buffer was
+				 * dynamically allocated
+				 */
+				attrs[variable_id] |= 0x80;
+
+				/* clear bit 2 - variable is writable */
+				attrs[variable_id] &= ~0x04;
+				attrs[variable_id] |= 0x01;
+
+			}
+
+			/* check that variable is a writable integer array */
+			if ((attrs[variable_id] & 0x1c) != 0x18)
+				status = -ERANGE;
+			else {
+				longptr_tmp = (long *)vars[variable_id];
+
+				/* pop the array index */
+				index = stack[--stack_ptr];
+
+				/* pop the value and store it into the array */
+				longptr_tmp[index] = stack[--stack_ptr];
+			}
+
+			break;
+		case OP_POPA:
+			/*
+			 * Pop stack into Boolean array
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is count
+			 * ...stack 1 is array index
+			 * ...stack 2 is value
+			 */
+			if (!altera_check_stack(stack_ptr, 3, &status))
+				break;
+			variable_id = args[0];
+
+			/*
+			 * If variable is read-only,
+			 * convert to writable array
+			 */
+			if ((version > 0) &&
+				((attrs[variable_id] & 0x9c) == 0x0c)) {
+				/* Allocate a writable buffer for this array */
+				long_tmp =
+					(var_size[variable_id] + 7L) >> 3L;
+				charptr_tmp2 = (u8 *)vars[variable_id];
+				charptr_tmp =
+					kzalloc(long_tmp, GFP_KERNEL);
+				vars[variable_id] = (long)charptr_tmp;
+
+				if (vars[variable_id] == 0) {
+					status = -ENOMEM;
+					break;
+				}
+
+				/* zero the buffer */
+				for (long_idx = 0L;
+					long_idx < long_tmp;
+					++long_idx) {
+					charptr_tmp[long_idx] = 0;
+				}
+
+				/* copy previous contents into buffer */
+				for (long_idx = 0L;
+					long_idx < var_size[variable_id];
+					++long_idx) {
+					long_idx2 = long_idx;
+
+					if (charptr_tmp2[long_idx2 >> 3] &
+						(1 << (long_idx2 & 7))) {
+						charptr_tmp[long_idx >> 3] |=
+							(1 << (long_idx & 7));
+					}
+				}
+
+				/*
+				 * set bit 7 - buffer was
+				 * dynamically allocated
+				 */
+				attrs[variable_id] |= 0x80;
+
+				/* clear bit 2 - variable is writable */
+				attrs[variable_id] &= ~0x04;
+				attrs[variable_id] |= 0x01;
+
+			}
+
+			/*
+			 * check that variable is
+			 * a writable Boolean array
+			 */
+			if ((attrs[variable_id] & 0x1c) != 0x08) {
+				status = -ERANGE;
+				break;
+			}
+
+			charptr_tmp = (u8 *)vars[variable_id];
+
+			/* pop the count (number of bits to copy) */
+			long_count = stack[--stack_ptr];
+
+			/* pop the array index */
+			long_idx = stack[--stack_ptr];
+
+			reverse = 0;
+
+			if (version > 0) {
+				/*
+				 * stack 0 = array right index
+				 * stack 1 = array left index
+				 */
+
+				if (long_idx > long_count) {
+					reverse = 1;
+					long_tmp = long_count;
+					long_count = 1 + long_idx -
+								long_count;
+					long_idx = long_tmp;
+
+					/* reverse POPA is not supported */
+					status = -ERANGE;
+					break;
+				} else
+					long_count = 1 + long_count -
+								long_idx;
+
+			}
+
+			/* pop the data */
+			long_tmp = stack[--stack_ptr];
+
+			if (long_count < 1) {
+				status = -ERANGE;
+				break;
+			}
+
+			for (i = 0; i < long_count; ++i) {
+				if (long_tmp & (1L << (s32) i))
+					charptr_tmp[long_idx >> 3L] |=
+						(1L << (long_idx & 7L));
+				else
+					charptr_tmp[long_idx >> 3L] &=
+						~(1L << (long_idx & 7L));
+
+				++long_idx;
+			}
+
+			break;
+		case OP_JMPZ:
+			/*
+			 * Pop stack and branch if zero
+			 * ...argument 0 is address
+			 * ...stack 0 is condition value
+			 */
+			if (altera_check_stack(stack_ptr, 1, &status)) {
+				if (stack[--stack_ptr] == 0) {
+					pc = args[0] + code_sect;
+					if ((pc < code_sect) ||
+					    (pc >= debug_sect))
+						status = -ERANGE;
+				}
+			}
+			break;
+		case OP_DS:
+		case OP_IS:
+			/*
+			 * DRSCAN
+			 * IRSCAN
+			 * ...argument 0 is scan data variable ID
+			 * ...stack 0 is array index
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			long_idx = stack[--stack_ptr];
+			long_count = stack[--stack_ptr];
+			reverse = 0;
+			if (version > 0) {
+				/*
+				 * stack 0 = array right index
+				 * stack 1 = array left index
+				 * stack 2 = count
+				 */
+				long_tmp = long_count;
+				long_count = stack[--stack_ptr];
+
+				if (long_idx > long_tmp) {
+					reverse = 1;
+					long_idx = long_tmp;
+				}
+			}
+
+			charptr_tmp = (u8 *)vars[args[0]];
+
+			if (reverse) {
+				/*
+				 * allocate a buffer
+				 * and reverse the data order
+				 */
+				charptr_tmp2 = charptr_tmp;
+				charptr_tmp = kzalloc((long_count >> 3) + 1,
+								GFP_KERNEL);
+				if (charptr_tmp == NULL) {
+					status = -ENOMEM;
+					break;
+				}
+
+				long_tmp = long_idx + long_count - 1;
+				long_idx2 = 0;
+				while (long_idx2 < long_count) {
+					if (charptr_tmp2[long_tmp >> 3] &
+							(1 << (long_tmp & 7)))
+						charptr_tmp[long_idx2 >> 3] |=
+							(1 << (long_idx2 & 7));
+					else
+						charptr_tmp[long_idx2 >> 3] &=
+							~(1 << (long_idx2 & 7));
+
+					--long_tmp;
+					++long_idx2;
+				}
+			}
+
+			if (opcode == 0x51) /* DS */
+				status = altera_drscan(astate, long_count,
+						charptr_tmp, long_idx);
+			else /* IS */
+				status = altera_irscan(astate, long_count,
+						charptr_tmp, long_idx);
+
+			if (reverse)
+				kfree(charptr_tmp);
+
+			break;
+		case OP_DPRA:
+			/*
+			 * DRPRE with array data
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is array index
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			index = stack[--stack_ptr];
+			count = stack[--stack_ptr];
+
+			if (version > 0)
+				/*
+				 * stack 0 = array right index
+				 * stack 1 = array left index
+				 */
+				count = 1 + count - index;
+
+			charptr_tmp = (u8 *)vars[args[0]];
+			status = altera_set_dr_pre(&astate->js, count, index,
+							charptr_tmp);
+			break;
+		case OP_DPOA:
+			/*
+			 * DRPOST with array data
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is array index
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			index = stack[--stack_ptr];
+			count = stack[--stack_ptr];
+
+			if (version > 0)
+				/*
+				 * stack 0 = array right index
+				 * stack 1 = array left index
+				 */
+				count = 1 + count - index;
+
+			charptr_tmp = (u8 *)vars[args[0]];
+			status = altera_set_dr_post(&astate->js, count, index,
+							charptr_tmp);
+			break;
+		case OP_IPRA:
+			/*
+			 * IRPRE with array data
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is array index
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			index = stack[--stack_ptr];
+			count = stack[--stack_ptr];
+
+			if (version > 0)
+				/*
+				 * stack 0 = array right index
+				 * stack 1 = array left index
+				 */
+				count = 1 + count - index;
+
+			charptr_tmp = (u8 *)vars[args[0]];
+			status = altera_set_ir_pre(&astate->js, count, index,
+							charptr_tmp);
+
+			break;
+		case OP_IPOA:
+			/*
+			 * IRPOST with array data
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is array index
+			 * ...stack 1 is count
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			index = stack[--stack_ptr];
+			count = stack[--stack_ptr];
+
+			if (version > 0)
+				/*
+				 * stack 0 = array right index
+				 * stack 1 = array left index
+				 */
+				count = 1 + count - index;
+
+			charptr_tmp = (u8 *)vars[args[0]];
+			status = altera_set_ir_post(&astate->js, count, index,
+							charptr_tmp);
+
+			break;
+		case OP_EXPT:
+			/*
+			 * EXPORT
+			 * ...argument 0 is string ID
+			 * ...stack 0 is integer expression
+			 */
+			if (altera_check_stack(stack_ptr, 1, &status)) {
+				name = &p[str_table + args[0]];
+				long_tmp = stack[--stack_ptr];
+				altera_export_int(name, long_tmp);
+			}
+			break;
+		case OP_PSHE:
+			/*
+			 * Push integer array element
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is array index
+			 */
+			if (!altera_check_stack(stack_ptr, 1, &status))
+				break;
+			variable_id = args[0];
+			index = stack[stack_ptr - 1];
+
+			/* check variable type */
+			if ((attrs[variable_id] & 0x1f) == 0x19) {
+				/* writable integer array */
+				longptr_tmp = (long *)vars[variable_id];
+				stack[stack_ptr - 1] = longptr_tmp[index];
+			} else if ((attrs[variable_id] & 0x1f) == 0x1c) {
+				/* read-only integer array */
+				long_tmp = vars[variable_id] +
+						(index * sizeof(long));
+				stack[stack_ptr - 1] =
+					get_unaligned_be32(&p[long_tmp]);
+			} else
+				status = -ERANGE;
+
+			break;
+		case OP_PSHA:
+			/*
+			 * Push Boolean array
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is count
+			 * ...stack 1 is array index
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			variable_id = args[0];
+
+			/* check that variable is a Boolean array */
+			if ((attrs[variable_id] & 0x18) != 0x08) {
+				status = -ERANGE;
+				break;
+			}
+
+			charptr_tmp = (u8 *)vars[variable_id];
+
+			/* pop the count (number of bits to copy) */
+			count = stack[--stack_ptr];
+
+			/* pop the array index */
+			index = stack[stack_ptr - 1];
+
+			if (version > 0)
+				/*
+				 * stack 0 = array right index
+				 * stack 1 = array left index
+				 */
+				count = 1 + count - index;
+
+			if ((count < 1) || (count > 32)) {
+				status = -ERANGE;
+				break;
+			}
+
+			long_tmp = 0L;
+
+			for (i = 0; i < count; ++i)
+				if (charptr_tmp[(i + index) >> 3] &
+						(1 << ((i + index) & 7)))
+					long_tmp |= (1L << i);
+
+			stack[stack_ptr - 1] = long_tmp;
+
+			break;
+		case OP_DYNA:
+			/*
+			 * Dynamically change size of array
+			 * ...argument 0 is variable ID
+			 * ...stack 0 is new size
+			 */
+			if (!altera_check_stack(stack_ptr, 1, &status))
+				break;
+			variable_id = args[0];
+			long_tmp = stack[--stack_ptr];
+
+			if (long_tmp > var_size[variable_id]) {
+				var_size[variable_id] = long_tmp;
+
+				if (attrs[variable_id] & 0x10)
+					/* allocate integer array */
+					long_tmp *= sizeof(long);
+				else
+					/* allocate Boolean array */
+					long_tmp = (long_tmp + 7) >> 3;
+
+				/*
+				 * If the buffer was previously allocated,
+				 * free it
+				 */
+				if (attrs[variable_id] & 0x80) {
+					kfree((void *)vars[variable_id]);
+					vars[variable_id] = 0;
+				}
+
+				/*
+				 * Allocate a new buffer
+				 * of the requested size
+				 */
+				vars[variable_id] = (long)
+					kzalloc(long_tmp, GFP_KERNEL);
+
+				if (vars[variable_id] == 0) {
+					status = -ENOMEM;
+					break;
+				}
+
+				/*
+				 * Set the attribute bit to indicate that
+				 * this buffer was dynamically allocated and
+				 * should be freed later
+				 */
+				attrs[variable_id] |= 0x80;
+
+				/* zero out memory */
+				count = ((var_size[variable_id] + 7L) /
+									8L);
+				charptr_tmp = (u8 *)(vars[variable_id]);
+				for (index = 0; index < count; ++index)
+					charptr_tmp[index] = 0;
+
+			}
+
+			break;
+		case OP_EXPV:
+			/*
+			 * Export Boolean array
+			 * ...argument 0 is string ID
+			 * ...stack 0 is variable ID
+			 * ...stack 1 is array right index
+			 * ...stack 2 is array left index
+			 */
+			if (!altera_check_stack(stack_ptr, 3, &status))
+				break;
+			if (version == 0) {
+				/* EXPV is not supported in JBC 1.0 */
+				bad_opcode = 1;
+				break;
+			}
+			name = &p[str_table + args[0]];
+			variable_id = stack[--stack_ptr];
+			long_idx = stack[--stack_ptr];/* right indx */
+			long_idx2 = stack[--stack_ptr];/* left indx */
+
+			if (long_idx > long_idx2) {
+				/* reverse indices not supported */
+				status = -ERANGE;
+				break;
+			}
+
+			long_count = 1 + long_idx2 - long_idx;
+
+			charptr_tmp = (u8 *)vars[variable_id];
+			charptr_tmp2 = NULL;
+
+			if ((long_idx & 7L) != 0) {
+				s32 k = long_idx;
+				charptr_tmp2 =
+					kzalloc(((long_count + 7L) / 8L),
+							GFP_KERNEL);
+				if (charptr_tmp2 == NULL) {
+					status = -ENOMEM;
+					break;
+				}
+
+				for (i = 0; i < long_count; ++i) {
+					if (charptr_tmp[k >> 3] &
+							(1 << (k & 7)))
+						charptr_tmp2[i >> 3] |=
+								(1 << (i & 7));
+					else
+						charptr_tmp2[i >> 3] &=
+								~(1 << (i & 7));
+
+					++k;
+				}
+				charptr_tmp = charptr_tmp2;
+
+			} else if (long_idx != 0)
+				charptr_tmp = &charptr_tmp[long_idx >> 3];
+
+			altera_export_bool_array(name, charptr_tmp,
+							long_count);
+
+			/* free allocated buffer */
+			if ((long_idx & 7L) != 0)
+				kfree(charptr_tmp2);
+
+			break;
+		case OP_COPY: {
+			/*
+			 * Array copy
+			 * ...argument 0 is dest ID
+			 * ...argument 1 is source ID
+			 * ...stack 0 is count
+			 * ...stack 1 is dest index
+			 * ...stack 2 is source index
+			 */
+			s32 copy_count;
+			s32 copy_index;
+			s32 copy_index2;
+			s32 destleft;
+			s32 src_count;
+			s32 dest_count;
+			int src_reverse = 0;
+			int dest_reverse = 0;
+
+			if (!altera_check_stack(stack_ptr, 3, &status))
+				break;
+
+			copy_count = stack[--stack_ptr];
+			copy_index = stack[--stack_ptr];
+			copy_index2 = stack[--stack_ptr];
+			reverse = 0;
+
+			if (version > 0) {
+				/*
+				 * stack 0 = source right index
+				 * stack 1 = source left index
+				 * stack 2 = destination right index
+				 * stack 3 = destination left index
+				 */
+				destleft = stack[--stack_ptr];
+
+				if (copy_count > copy_index) {
+					src_reverse = 1;
+					reverse = 1;
+					src_count = 1 + copy_count - copy_index;
+					/* copy_index = source start index */
+				} else {
+					src_count = 1 + copy_index - copy_count;
+					/* source start index */
+					copy_index = copy_count;
+				}
+
+				if (copy_index2 > destleft) {
+					dest_reverse = 1;
+					reverse = !reverse;
+					dest_count = 1 + copy_index2 - destleft;
+					/* destination start index */
+					copy_index2 = destleft;
+				} else
+					dest_count = 1 + destleft - copy_index2;
+
+				copy_count = (src_count < dest_count) ?
+							src_count : dest_count;
+
+				if ((src_reverse || dest_reverse) &&
+					(src_count != dest_count))
+					/*
+					 * If either the source or destination
+					 * is reversed, we can't tolerate
+					 * a length mismatch, because we
+					 * "left justify" arrays when copying.
+					 * This won't work correctly
+					 * with reversed arrays.
+					 */
+					status = -ERANGE;
+
+			}
+
+			count = copy_count;
+			index = copy_index;
+			index2 = copy_index2;
+
+			/*
+			 * If destination is a read-only array,
+			 * allocate a buffer and convert it to a writable array
+			 */
+			variable_id = args[1];
+			if ((version > 0) &&
+				((attrs[variable_id] & 0x9c) == 0x0c)) {
+				/* Allocate a writable buffer for this array */
+				long_tmp =
+					(var_size[variable_id] + 7L) >> 3L;
+				charptr_tmp2 = (u8 *)vars[variable_id];
+				charptr_tmp =
+					kzalloc(long_tmp, GFP_KERNEL);
+				vars[variable_id] = (long)charptr_tmp;
+
+				if (vars[variable_id] == 0) {
+					status = -ENOMEM;
+					break;
+				}
+
+				/* zero the buffer */
+				for (long_idx = 0L; long_idx < long_tmp;
+								++long_idx)
+					charptr_tmp[long_idx] = 0;
+
+				/* copy previous contents into buffer */
+				for (long_idx = 0L;
+					long_idx < var_size[variable_id];
+								++long_idx) {
+					long_idx2 = long_idx;
+
+					if (charptr_tmp2[long_idx2 >> 3] &
+						(1 << (long_idx2 & 7)))
+						charptr_tmp[long_idx >> 3] |=
+							(1 << (long_idx & 7));
+
+				}
+
+				/*
+				set bit 7 - buffer was dynamically allocated */
+				attrs[variable_id] |= 0x80;
+
+				/* clear bit 2 - variable is writable */
+				attrs[variable_id] &= ~0x04;
+				attrs[variable_id] |= 0x01;
+			}
+
+			charptr_tmp = (u8 *)vars[args[1]];
+			charptr_tmp2 = (u8 *)vars[args[0]];
+
+			/* check if destination is a writable Boolean array */
+			if ((attrs[args[1]] & 0x1c) != 0x08) {
+				status = -ERANGE;
+				break;
+			}
+
+			if (count < 1) {
+				status = -ERANGE;
+				break;
+			}
+
+			if (reverse)
+				index2 += (count - 1);
+
+			for (i = 0; i < count; ++i) {
+				if (charptr_tmp2[index >> 3] &
+							(1 << (index & 7)))
+					charptr_tmp[index2 >> 3] |=
+							(1 << (index2 & 7));
+				else
+					charptr_tmp[index2 >> 3] &=
+						~(1 << (index2 & 7));
+
+				++index;
+				if (reverse)
+					--index2;
+				else
+					++index2;
+			}
+
+			break;
+		}
+		case OP_DSC:
+		case OP_ISC: {
+			/*
+			 * DRSCAN with capture
+			 * IRSCAN with capture
+			 * ...argument 0 is scan data variable ID
+			 * ...argument 1 is capture variable ID
+			 * ...stack 0 is capture index
+			 * ...stack 1 is scan data index
+			 * ...stack 2 is count
+			 */
+			s32 scan_right, scan_left;
+			s32 capture_count = 0;
+			s32 scan_count = 0;
+			s32 capture_index;
+			s32 scan_index;
+
+			if (!altera_check_stack(stack_ptr, 3, &status))
+				break;
+
+			capture_index = stack[--stack_ptr];
+			scan_index = stack[--stack_ptr];
+
+			if (version > 0) {
+				/*
+				 * stack 0 = capture right index
+				 * stack 1 = capture left index
+				 * stack 2 = scan right index
+				 * stack 3 = scan left index
+				 * stack 4 = count
+				 */
+				scan_right = stack[--stack_ptr];
+				scan_left = stack[--stack_ptr];
+				capture_count = 1 + scan_index - capture_index;
+				scan_count = 1 + scan_left - scan_right;
+				scan_index = scan_right;
+			}
+
+			long_count = stack[--stack_ptr];
+			/*
+			 * If capture array is read-only, allocate a buffer
+			 * and convert it to a writable array
+			 */
+			variable_id = args[1];
+			if ((version > 0) &&
+				((attrs[variable_id] & 0x9c) == 0x0c)) {
+				/* Allocate a writable buffer for this array */
+				long_tmp =
+					(var_size[variable_id] + 7L) >> 3L;
+				charptr_tmp2 = (u8 *)vars[variable_id];
+				charptr_tmp =
+					kzalloc(long_tmp, GFP_KERNEL);
+				vars[variable_id] = (long)charptr_tmp;
+
+				if (vars[variable_id] == 0) {
+					status = -ENOMEM;
+					break;
+				}
+
+				/* zero the buffer */
+				for (long_idx = 0L; long_idx < long_tmp;
+								++long_idx)
+					charptr_tmp[long_idx] = 0;
+
+				/* copy previous contents into buffer */
+				for (long_idx = 0L;
+					long_idx < var_size[variable_id];
+								++long_idx) {
+					long_idx2 = long_idx;
+
+					if (charptr_tmp2[long_idx2 >> 3] &
+						(1 << (long_idx2 & 7)))
+						charptr_tmp[long_idx >> 3] |=
+							(1 << (long_idx & 7));
+
+				}
+
+				/*
+				 * set bit 7 - buffer was
+				 * dynamically allocated
+				 */
+				attrs[variable_id] |= 0x80;
+
+				/* clear bit 2 - variable is writable */
+				attrs[variable_id] &= ~0x04;
+				attrs[variable_id] |= 0x01;
+
+			}
+
+			charptr_tmp = (u8 *)vars[args[0]];
+			charptr_tmp2 = (u8 *)vars[args[1]];
+
+			if ((version > 0) &&
+					((long_count > capture_count) ||
+					(long_count > scan_count))) {
+				status = -ERANGE;
+				break;
+			}
+
+			/*
+			 * check that capture array
+			 * is a writable Boolean array
+			 */
+			if ((attrs[args[1]] & 0x1c) != 0x08) {
+				status = -ERANGE;
+				break;
+			}
+
+			if (status == 0) {
+				if (opcode == 0x82) /* DSC */
+					status = altera_swap_dr(astate,
+							long_count,
+							charptr_tmp,
+							scan_index,
+							charptr_tmp2,
+							capture_index);
+				else /* ISC */
+					status = altera_swap_ir(astate,
+							long_count,
+							charptr_tmp,
+							scan_index,
+							charptr_tmp2,
+							capture_index);
+
+			}
+
+			break;
+		}
+		case OP_WAIT:
+			/*
+			 * WAIT
+			 * ...argument 0 is wait state
+			 * ...argument 1 is end state
+			 * ...stack 0 is cycles
+			 * ...stack 1 is microseconds
+			 */
+			if (!altera_check_stack(stack_ptr, 2, &status))
+				break;
+			long_tmp = stack[--stack_ptr];
+
+			if (long_tmp != 0L)
+				status = altera_wait_cycles(astate, long_tmp,
+								args[0]);
+
+			long_tmp = stack[--stack_ptr];
+
+			if ((status == 0) && (long_tmp != 0L))
+				status = altera_wait_msecs(astate,
+								long_tmp,
+								args[0]);
+
+			if ((status == 0) && (args[1] != args[0]))
+				status = altera_goto_jstate(astate,
+								args[1]);
+
+			if (version > 0) {
+				--stack_ptr; /* throw away MAX cycles */
+				--stack_ptr; /* throw away MAX microseconds */
+			}
+			break;
+		case OP_CMPA: {
+			/*
+			 * Array compare
+			 * ...argument 0 is source 1 ID
+			 * ...argument 1 is source 2 ID
+			 * ...argument 2 is mask ID
+			 * ...stack 0 is source 1 index
+			 * ...stack 1 is source 2 index
+			 * ...stack 2 is mask index
+			 * ...stack 3 is count
+			 */
+			s32 a, b;
+			u8 *source1 = (u8 *)vars[args[0]];
+			u8 *source2 = (u8 *)vars[args[1]];
+			u8 *mask = (u8 *)vars[args[2]];
+			u32 index1;
+			u32 index2;
+			u32 mask_index;
+
+			if (!altera_check_stack(stack_ptr, 4, &status))
+				break;
+
+			index1 = stack[--stack_ptr];
+			index2 = stack[--stack_ptr];
+			mask_index = stack[--stack_ptr];
+			long_count = stack[--stack_ptr];
+
+			if (version > 0) {
+				/*
+				 * stack 0 = source 1 right index
+				 * stack 1 = source 1 left index
+				 * stack 2 = source 2 right index
+				 * stack 3 = source 2 left index
+				 * stack 4 = mask right index
+				 * stack 5 = mask left index
+				 */
+				s32 mask_right = stack[--stack_ptr];
+				s32 mask_left = stack[--stack_ptr];
+				/* source 1 count */
+				a = 1 + index2 - index1;
+				/* source 2 count */
+				b = 1 + long_count - mask_index;
+				a = (a < b) ? a : b;
+				/* mask count */
+				b = 1 + mask_left - mask_right;
+				a = (a < b) ? a : b;
+				/* source 2 start index */
+				index2 = mask_index;
+				/* mask start index */
+				mask_index = mask_right;
+				long_count = a;
+			}
+
+			long_tmp = 1L;
+
+			if (long_count < 1)
+				status = -ERANGE;
+			else {
+				count = long_count;
+
+				for (i = 0; i < count; ++i) {
+					if (mask[mask_index >> 3] &
+						(1 << (mask_index & 7))) {
+						a = source1[index1 >> 3] &
+							(1 << (index1 & 7))
+								? 1 : 0;
+						b = source2[index2 >> 3] &
+							(1 << (index2 & 7))
+								? 1 : 0;
+
+						if (a != b) /* failure */
+							long_tmp = 0L;
+					}
+					++index1;
+					++index2;
+					++mask_index;
+				}
+			}
+
+			stack[stack_ptr++] = long_tmp;
+
+			break;
+		}
+		default:
+			/* Unrecognized opcode -- ERROR! */
+			bad_opcode = 1;
+			break;
+		}
+
+		if (bad_opcode)
+			status = -ENOSYS;
+
+		if ((stack_ptr < 0) || (stack_ptr >= ALTERA_STACK_SIZE))
+			status = -EOVERFLOW;
+
+		if (status != 0) {
+			done = 1;
+			*error_address = (s32)(opcode_address - code_sect);
+		}
+	}
+
+	altera_free_buffers(astate);
+
+	/* Free all dynamically allocated arrays */
+	if ((attrs != NULL) && (vars != NULL))
+		for (i = 0; i < sym_count; ++i)
+			if (attrs[i] & 0x80)
+				kfree((void *)vars[i]);
+
+	kfree(vars);
+	kfree(var_size);
+	kfree(attrs);
+	kfree(proc_attributes);
+
+	return status;
+}
+
+static int altera_get_note(u8 *p, s32 program_size,
+			s32 *offset, char *key, char *value, int length)
+/*
+ * Gets key and value of NOTE fields in the JBC file.
+ * Can be called in two modes:  if offset pointer is NULL,
+ * then the function searches for note fields which match
+ * the key string provided.  If offset is not NULL, then
+ * the function finds the next note field of any key,
+ * starting at the offset specified by the offset pointer.
+ * Returns 0 for success, else appropriate error code
+ */
+{
+	int status = -ENODATA;
+	u32 note_strings = 0L;
+	u32 note_table = 0L;
+	u32 note_count = 0L;
+	u32 first_word = 0L;
+	int version = 0;
+	int delta = 0;
+	char *key_ptr;
+	char *value_ptr;
+	int i;
+
+	/* Read header information */
+	if (program_size > 52L) {
+		first_word    = get_unaligned_be32(&p[0]);
+		version = (first_word & 1L);
+		delta = version * 8;
+
+		note_strings  = get_unaligned_be32(&p[8 + delta]);
+		note_table    = get_unaligned_be32(&p[12 + delta]);
+		note_count    = get_unaligned_be32(&p[44 + (2 * delta)]);
+	}
+
+	if ((first_word != 0x4A414D00L) && (first_word != 0x4A414D01L))
+		return -EIO;
+
+	if (note_count <= 0L)
+		return status;
+
+	if (offset == NULL) {
+		/*
+		 * We will search for the first note with a specific key,
+		 * and return only the value
+		 */
+		for (i = 0; (i < note_count) &&
+						(status != 0); ++i) {
+			key_ptr = &p[note_strings +
+					get_unaligned_be32(
+					&p[note_table + (8 * i)])];
+			if ((strnicmp(key, key_ptr, strlen(key_ptr)) == 0) &&
+						(key != NULL)) {
+				status = 0;
+
+				value_ptr = &p[note_strings +
+						get_unaligned_be32(
+						&p[note_table + (8 * i) + 4])];
+
+				if (value != NULL)
+					strlcpy(value, value_ptr, length);
+
+			}
+		}
+	} else {
+		/*
+		 * We will search for the next note, regardless of the key,
+		 * and return both the value and the key
+		 */
+
+		i = *offset;
+
+		if ((i >= 0) && (i < note_count)) {
+			status = 0;
+
+			if (key != NULL)
+				strlcpy(key, &p[note_strings +
+						get_unaligned_be32(
+						&p[note_table + (8 * i)])],
+					length);
+
+			if (value != NULL)
+				strlcpy(value, &p[note_strings +
+						get_unaligned_be32(
+						&p[note_table + (8 * i) + 4])],
+					length);
+
+			*offset = i + 1;
+		}
+	}
+
+	return status;
+}
+
+static int altera_check_crc(u8 *p, s32 program_size)
+{
+	int status = 0;
+	u16 local_expected = 0,
+	    local_actual = 0,
+	    shift_reg = 0xffff;
+	int bit, feedback;
+	u8 databyte;
+	u32 i;
+	u32 crc_section = 0L;
+	u32 first_word = 0L;
+	int version = 0;
+	int delta = 0;
+
+	if (program_size > 52L) {
+		first_word  = get_unaligned_be32(&p[0]);
+		version = (first_word & 1L);
+		delta = version * 8;
+
+		crc_section = get_unaligned_be32(&p[32 + delta]);
+	}
+
+	if ((first_word != 0x4A414D00L) && (first_word != 0x4A414D01L))
+		status = -EIO;
+
+	if (crc_section >= program_size)
+		status = -EIO;
+
+	if (status == 0) {
+		local_expected = (u16)get_unaligned_be16(&p[crc_section]);
+
+		for (i = 0; i < crc_section; ++i) {
+			databyte = p[i];
+			for (bit = 0; bit < 8; bit++) {
+				feedback = (databyte ^ shift_reg) & 0x01;
+				shift_reg >>= 1;
+				if (feedback)
+					shift_reg ^= 0x8408;
+
+				databyte >>= 1;
+			}
+		}
+
+		local_actual = (u16)~shift_reg;
+
+		if (local_expected != local_actual)
+			status = -EILSEQ;
+
+	}
+
+	if (debug || status) {
+		switch (status) {
+		case 0:
+			printk(KERN_INFO "%s: CRC matched: %04x\n", __func__,
+				local_actual);
+			break;
+		case -EILSEQ:
+			printk(KERN_ERR "%s: CRC mismatch: expected %04x, "
+				"actual %04x\n", __func__, local_expected,
+				local_actual);
+			break;
+		case -ENODATA:
+			printk(KERN_ERR "%s: expected CRC not found, "
+				"actual CRC = %04x\n", __func__,
+				local_actual);
+			break;
+		case -EIO:
+			printk(KERN_ERR "%s: error: format isn't "
+				"recognized.\n", __func__);
+			break;
+		default:
+			printk(KERN_ERR "%s: CRC function returned error "
+				"code %d\n", __func__, status);
+			break;
+		}
+	}
+
+	return status;
+}
+
+static int altera_get_file_info(u8 *p,
+					s32 program_size,
+					int *format_version,
+					int *action_count,
+					int *procedure_count)
+{
+	int status = -EIO;
+	u32 first_word = 0;
+	int version = 0;
+
+	if (program_size <= 52L)
+		return status;
+
+	first_word = get_unaligned_be32(&p[0]);
+
+	if ((first_word == 0x4A414D00L) || (first_word == 0x4A414D01L)) {
+		status = 0;
+
+		version = (first_word & 1L);
+		*format_version = version + 1;
+
+		if (version > 0) {
+			*action_count = get_unaligned_be32(&p[48]);
+			*procedure_count = get_unaligned_be32(&p[52]);
+		}
+	}
+
+	return status;
+}
+
+static int altera_get_act_info(u8 *p,
+					s32 program_size,
+					int index,
+					char **name,
+					char **description,
+					struct altera_procinfo **proc_list)
+{
+	int status = -EIO;
+	struct altera_procinfo *procptr = NULL;
+	struct altera_procinfo *tmpptr = NULL;
+	u32 first_word = 0L;
+	u32 action_table = 0L;
+	u32 proc_table = 0L;
+	u32 str_table = 0L;
+	u32 note_strings = 0L;
+	u32 action_count = 0L;
+	u32 proc_count = 0L;
+	u32 act_name_id = 0L;
+	u32 act_desc_id = 0L;
+	u32 act_proc_id = 0L;
+	u32 act_proc_name = 0L;
+	u8 act_proc_attribute = 0;
+
+	if (program_size <= 52L)
+		return status;
+	/* Read header information */
+	first_word = get_unaligned_be32(&p[0]);
+
+	if (first_word != 0x4A414D01L)
+		return status;
+
+	action_table = get_unaligned_be32(&p[4]);
+	proc_table   = get_unaligned_be32(&p[8]);
+	str_table = get_unaligned_be32(&p[12]);
+	note_strings = get_unaligned_be32(&p[16]);
+	action_count = get_unaligned_be32(&p[48]);
+	proc_count   = get_unaligned_be32(&p[52]);
+
+	if (index >= action_count)
+		return status;
+
+	act_name_id = get_unaligned_be32(&p[action_table + (12 * index)]);
+	act_desc_id = get_unaligned_be32(&p[action_table + (12 * index) + 4]);
+	act_proc_id = get_unaligned_be32(&p[action_table + (12 * index) + 8]);
+
+	*name = &p[str_table + act_name_id];
+
+	if (act_desc_id < (note_strings - str_table))
+		*description = &p[str_table + act_desc_id];
+
+	do {
+		act_proc_name = get_unaligned_be32(
+					&p[proc_table + (13 * act_proc_id)]);
+		act_proc_attribute =
+			(p[proc_table + (13 * act_proc_id) + 8] & 0x03);
+
+		procptr = (struct altera_procinfo *)
+				kzalloc(sizeof(struct altera_procinfo),
+								GFP_KERNEL);
+
+		if (procptr == NULL)
+			status = -ENOMEM;
+		else {
+			procptr->name = &p[str_table + act_proc_name];
+			procptr->attrs = act_proc_attribute;
+			procptr->next = NULL;
+
+			/* add record to end of linked list */
+			if (*proc_list == NULL)
+				*proc_list = procptr;
+			else {
+				tmpptr = *proc_list;
+				while (tmpptr->next != NULL)
+					tmpptr = tmpptr->next;
+				tmpptr->next = procptr;
+			}
+		}
+
+		act_proc_id = get_unaligned_be32(
+				&p[proc_table + (13 * act_proc_id) + 4]);
+	} while ((act_proc_id != 0) && (act_proc_id < proc_count));
+
+	return status;
+}
+
+int altera_init(struct altera_config *config, const struct firmware *fw)
+{
+	struct altera_state *astate = NULL;
+	struct altera_procinfo *proc_list = NULL;
+	struct altera_procinfo *procptr = NULL;
+	char *key = NULL;
+	char *value = NULL;
+	char *action_name = NULL;
+	char *description = NULL;
+	int exec_result = 0;
+	int exit_code = 0;
+	int format_version = 0;
+	int action_count = 0;
+	int procedure_count = 0;
+	int index = 0;
+	s32 offset = 0L;
+	s32 error_address = 0L;
+
+	key = kzalloc(33 * sizeof(char), GFP_KERNEL);
+	if (!key)
+		return -ENOMEM;
+	value = kzalloc(257 * sizeof(char), GFP_KERNEL);
+	if (!value)
+		return -ENOMEM;
+	astate = kzalloc(sizeof(struct altera_state), GFP_KERNEL);
+	if (!astate)
+		return -ENOMEM;
+
+	astate->config = config;
+	if (!astate->config->jtag_io) {
+		dprintk(KERN_INFO "%s: using byteblaster!\n", __func__);
+		astate->config->jtag_io = netup_jtag_io_lpt;
+	}
+
+	altera_check_crc((u8 *)fw->data, fw->size);
+
+	if (debug) {
+		altera_get_file_info((u8 *)fw->data, fw->size, &format_version,
+					&action_count, &procedure_count);
+		printk(KERN_INFO "%s: File format is %s ByteCode format\n",
+			__func__, (format_version == 2) ? "Jam STAPL" :
+						"pre-standardized Jam 1.1");
+		while (altera_get_note((u8 *)fw->data, fw->size,
+					&offset, key, value, 256) == 0)
+			printk(KERN_INFO "%s: NOTE \"%s\" = \"%s\"\n",
+					__func__, key, value);
+	}
+
+	if (debug && (format_version == 2) && (action_count > 0)) {
+		printk(KERN_INFO "%s: Actions available:\n", __func__);
+		for (index = 0; index < action_count; ++index) {
+			altera_get_act_info((u8 *)fw->data, fw->size,
+						index, &action_name,
+						&description,
+						&proc_list);
+
+			if (description == NULL)
+				printk(KERN_INFO "%s: %s\n",
+						__func__,
+						action_name);
+			else
+				printk(KERN_INFO "%s: %s \"%s\"\n",
+						__func__,
+						action_name,
+						description);
+
+			procptr = proc_list;
+			while (procptr != NULL) {
+				if (procptr->attrs != 0)
+					printk(KERN_INFO "%s:    %s (%s)\n",
+						__func__,
+						procptr->name,
+						(procptr->attrs == 1) ?
+						"optional" : "recommended");
+
+				proc_list = procptr->next;
+				kfree(procptr);
+				procptr = proc_list;
+			}
+		}
+
+		printk(KERN_INFO "\n");
+	}
+
+	exec_result = altera_execute(astate, (u8 *)fw->data, fw->size,
+				&error_address, &exit_code, &format_version);
+
+	if (exit_code)
+		exec_result = -EREMOTEIO;
+
+	if ((format_version == 2) && (exec_result == -EINVAL)) {
+		if (astate->config->action == NULL)
+			printk(KERN_ERR "%s: error: no action specified for "
+				"Jam STAPL file.\nprogram terminated.\n",
+				__func__);
+		else
+			printk(KERN_ERR "%s: error: action \"%s\""
+				" is not supported "
+				"for this Jam STAPL file.\n"
+				"Program terminated.\n", __func__,
+				astate->config->action);
+
+	} else if (exec_result)
+		printk(KERN_ERR "%s: error %d\n", __func__, exec_result);
+
+	kfree(key);
+	kfree(value);
+	kfree(astate);
+
+	return 0;
+}
+EXPORT_SYMBOL(altera_init);
diff --git a/include/staging/altera.h b/include/staging/altera.h
new file mode 100644
index 0000000..94c0c61
--- /dev/null
+++ b/include/staging/altera.h
@@ -0,0 +1,49 @@
+/*
+ * altera.h
+ *
+ * altera FPGA driver
+ *
+ * Copyright (C) Altera Corporation 1998-2001
+ * Copyright (C) 2010 NetUP Inc.
+ * Copyright (C) 2010 Igor M. Liplianin <liplianin@xxxxxxxx>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 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 General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#ifndef _ALTERA_H_
+#define _ALTERA_H_
+
+struct altera_config {
+	void *dev;
+	u8 *action;
+	int (*jtag_io) (void *dev, int tms, int tdi, int tdo);
+};
+
+#if defined(CONFIG_ALTERA_STAPL) || \
+		(defined(CONFIG_ALTERA_STAPL_MODULE) && defined(MODULE))
+
+extern int altera_init(struct altera_config *config, const struct firmware *fw);
+#else
+
+static inline int altera_init(struct altera_config *config,
+						const struct firmware *fw)
+{
+	printk(KERN_WARNING "%s: driver disabled by Kconfig\n", __func__);
+	return 0;
+}
+#endif /* CONFIG_ALTERA_STAPL */
+
+#endif /* _ALTERA_H_ */
-- 
1.7.1

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