Re: [PATCH] Altera FPGA firmware download module.

From: Mauro Carvalho Chehab
Date: Tue Dec 28 2010 - 06:36:55 EST

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Em 26-10-2010 20:03, Igor M. Liplianin escreveu:
> From 0ad325d57f0e4b4552f83fcb48499d8aa42ba4e6 Mon Sep 17 00:00:00 2001
> From: Igor M. Liplianin <liplianin@xxxxxxxx>
> Date: Mon, 24 May 2010 13:09:23 +0300
> Subject: [PATCH] Altera FPGA firmware download module.
>
> 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.

Hi Igor,

Sorry for taking so long time to review it. Somehow, I missed it.

The driver seems OK to my eyes. Could you please re-send it, together
with the other patches that add support for the DVB board that needs it?

Thanks!
Mauro.
> Signed-off-by: Igor M. Liplianin <liplianin@xxxxxxxx>
> ---
> drivers/misc/Kconfig | 1 +
> drivers/misc/Makefile | 1 +
> drivers/misc/altera-stapl/Kconfig | 8 +
> drivers/misc/altera-stapl/Makefile | 3 +
> drivers/misc/altera-stapl/altera-comp.c | 142 ++
> drivers/misc/altera-stapl/altera-exprt.h | 33 +
> drivers/misc/altera-stapl/altera-jtag.c | 1010 ++++++++++++
> drivers/misc/altera-stapl/altera-jtag.h | 113 ++
> drivers/misc/altera-stapl/altera-lpt.c | 70 +
> drivers/misc/altera-stapl/altera.c | 2484 ++++++++++++++++++++++++++++++
> include/misc/altera.h | 49 +
> 11 files changed, 3914 insertions(+), 0 deletions(-)
> create mode 100644 drivers/misc/altera-stapl/Kconfig
> create mode 100644 drivers/misc/altera-stapl/Makefile
> create mode 100644 drivers/misc/altera-stapl/altera-comp.c
> create mode 100644 drivers/misc/altera-stapl/altera-exprt.h
> create mode 100644 drivers/misc/altera-stapl/altera-jtag.c
> create mode 100644 drivers/misc/altera-stapl/altera-jtag.h
> create mode 100644 drivers/misc/altera-stapl/altera-lpt.c
> create mode 100644 drivers/misc/altera-stapl/altera.c
> create mode 100644 include/misc/altera.h
>
> diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
> index 9b089df..b5789d9 100644
> --- a/drivers/misc/Kconfig
> +++ b/drivers/misc/Kconfig
> @@ -367,5 +367,6 @@ source "drivers/misc/c2port/Kconfig"
> source "drivers/misc/eeprom/Kconfig"
> source "drivers/misc/cb710/Kconfig"
> source "drivers/misc/iwmc3200top/Kconfig"
> +source "drivers/misc/altera-stapl/Kconfig"
>
> endif # MISC_DEVICES
> diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
> index 67552d6..e16826c 100644
> --- a/drivers/misc/Makefile
> +++ b/drivers/misc/Makefile
> @@ -32,3 +32,4 @@ obj-y += eeprom/
> obj-y += cb710/
> obj-$(CONFIG_VMWARE_BALLOON) += vmware_balloon.o
> obj-$(CONFIG_ARM_CHARLCD) += arm-charlcd.o
> +obj-y += altera-stapl/
> diff --git a/drivers/misc/altera-stapl/Kconfig b/drivers/misc/altera-stapl/Kconfig
> new file mode 100644
> index 0000000..711a4a2
> --- /dev/null
> +++ b/drivers/misc/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 m
> + help
> + An Altera FPGA module. Say Y when you want to support this tool.
> diff --git a/drivers/misc/altera-stapl/Makefile b/drivers/misc/altera-stapl/Makefile
> new file mode 100644
> index 0000000..055f61e
> --- /dev/null
> +++ b/drivers/misc/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/misc/altera-stapl/altera-comp.c b/drivers/misc/altera-stapl/altera-comp.c
> new file mode 100644
> index 0000000..49b103b
> --- /dev/null
> +++ b/drivers/misc/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/misc/altera-stapl/altera-exprt.h b/drivers/misc/altera-stapl/altera-exprt.h
> new file mode 100644
> index 0000000..39c38d8
> --- /dev/null
> +++ b/drivers/misc/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/misc/altera-stapl/altera-jtag.c b/drivers/misc/altera-stapl/altera-jtag.c
> new file mode 100644
> index 0000000..5cbae05
> --- /dev/null
> +++ b/drivers/misc/altera-stapl/altera-jtag.c
> @@ -0,0 +1,1010 @@
> +/*
> + * 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 <misc/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_jstate_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_jstate_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_jstate_transitions[js->jtag_state].tms_high;
> + else
> + js->jtag_state =
> + altera_jstate_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/misc/altera-stapl/altera-jtag.h b/drivers/misc/altera-stapl/altera-jtag.h
> new file mode 100644
> index 0000000..2f97e36
> --- /dev/null
> +++ b/drivers/misc/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/misc/altera-stapl/altera-lpt.c b/drivers/misc/altera-stapl/altera-lpt.c
> new file mode 100644
> index 0000000..91456a0
> --- /dev/null
> +++ b/drivers/misc/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/misc/altera-stapl/altera.c b/drivers/misc/altera-stapl/altera.c
> new file mode 100644
> index 0000000..6e176e3
> --- /dev/null
> +++ b/drivers/misc/altera-stapl/altera.c
> @@ -0,0 +1,2484 @@
> +/*
> + * altera.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 <asm/unaligned.h>
> +#include <linux/ctype.h>
> +#include <linux/string.h>
> +#include <linux/firmware.h>
> +#include <linux/slab.h>
> +#include <misc/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_temp;
> + u32 variable_id;
> + u8 *charptr_temp;
> + u8 *charptr_temp2;
> + long *longptr_temp;
> + 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_index;
> + s32 long_index2;
> + 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_temp = stack[stack_ptr - 2];
> + stack[stack_ptr - 2] = stack[stack_ptr - 1];
> + stack[stack_ptr - 1] = long_temp;
> + }
> + 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) {
> + /*
> + there are 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_temp = stack[--stack_ptr];
> + count = stack[stack_ptr - 1];
> +
> + if ((count < 1) || (count > 32))
> + status = -ERANGE;
> + else {
> + long_temp &= ((-1L) >> (32 - count));
> +
> + stack[stack_ptr - 1] =
> + ((a & long_temp) == (b & long_temp))
> + ? 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_temp = stack[--stack_ptr];
> + count = stack[--stack_ptr];
> + put_unaligned_le32(long_temp, &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_temp = stack[--stack_ptr];
> + count = stack[stack_ptr - 1];
> + put_unaligned_le32(long_temp, &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_temp = stack[--stack_ptr];
> + count = stack[--stack_ptr];
> + put_unaligned_le32(long_temp, &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_temp = stack[--stack_ptr];
> + count = stack[stack_ptr - 1];
> + put_unaligned_le32(long_temp, &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_temp = stack[--stack_ptr];
> + put_unaligned_le32(long_temp, &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_temp = stack[--stack_ptr];
> + put_unaligned_le32(long_temp, &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_temp = stack[--stack_ptr];
> + put_unaligned_le32(long_temp, &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_temp = stack[--stack_ptr];
> + put_unaligned_le32(long_temp, &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_temp = stack[stack_ptr - 2];
> + stack[stack_ptr - 2] = stack[stack_ptr - 1];
> + stack[stack_ptr - 1] = long_temp;
> + }
> +
> + /* SWPN 7 */
> + index = 7 + 1;
> + if (altera_check_stack(stack_ptr, index, &status)) {
> + long_temp = stack[stack_ptr - index];
> + stack[stack_ptr - index] = stack[stack_ptr - 1];
> + stack[stack_ptr - 1] = long_temp;
> + }
> +
> + /* SWP */
> + if (altera_check_stack(stack_ptr, 2, &status)) {
> + long_temp = stack[stack_ptr - 2];
> + stack[stack_ptr - 2] = stack[stack_ptr - 1];
> + stack[stack_ptr - 1] = long_temp;
> + }
> +
> + /* SWPN 6 */
> + index = 6 + 1;
> + if (altera_check_stack(stack_ptr, index, &status)) {
> + long_temp = stack[stack_ptr - index];
> + stack[stack_ptr - index] = stack[stack_ptr - 1];
> + stack[stack_ptr - 1] = long_temp;
> + }
> +
> + /* 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_temp = stack[stack_ptr - index];
> + stack[stack_ptr - index] = stack[stack_ptr - 1];
> + stack[stack_ptr - 1] = long_temp;
> + }
> +
> + /* SWP */
> + if (altera_check_stack(stack_ptr, 2, &status)) {
> + long_temp = stack[stack_ptr - 2];
> + stack[stack_ptr - 2] = stack[stack_ptr - 1];
> + stack[stack_ptr - 1] = long_temp;
> + }
> +
> + /* 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_temp = stack[stack_ptr - index];
> + stack[stack_ptr - index] = stack[stack_ptr - 1];
> + stack[stack_ptr - 1] = long_temp;
> + }
> + 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_temp = vars[variable_id];
> + longptr_temp = kzalloc(count * sizeof(long),
> + GFP_KERNEL);
> + vars[variable_id] = (long)longptr_temp;
> +
> + if (vars[variable_id] == 0) {
> + status = -ENOMEM;
> + break;
> + }
> +
> + /* copy previous contents into buffer */
> + for (i = 0; i < count; ++i) {
> + longptr_temp[i] = get_unaligned_be32(&p[long_temp]);
> + long_temp += 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_temp = (long *)vars[variable_id];
> +
> + /* pop the array index */
> + index = stack[--stack_ptr];
> +
> + /* pop the value and store it into the array */
> + longptr_temp[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_temp =
> + (var_size[variable_id] + 7L) >> 3L;
> + charptr_temp2 = (u8 *)vars[variable_id];
> + charptr_temp =
> + kzalloc(long_temp, GFP_KERNEL);
> + vars[variable_id] = (long)charptr_temp;
> +
> + if (vars[variable_id] == 0) {
> + status = -ENOMEM;
> + break;
> + }
> +
> + /* zero the buffer */
> + for (long_index = 0L;
> + long_index < long_temp;
> + ++long_index) {
> + charptr_temp[long_index] = 0;
> + }
> +
> + /* copy previous contents into buffer */
> + for (long_index = 0L;
> + long_index < var_size[variable_id];
> + ++long_index) {
> + long_index2 = long_index;
> +
> + if (charptr_temp2[long_index2 >> 3] &
> + (1 << (long_index2 & 7))) {
> + charptr_temp[long_index >> 3] |=
> + (1 << (long_index & 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_temp = (u8 *)vars[variable_id];
> +
> + /* pop the count (number of bits to copy) */
> + long_count = stack[--stack_ptr];
> +
> + /* pop the array index */
> + long_index = stack[--stack_ptr];
> +
> + reverse = 0;
> +
> + if (version > 0) {
> + /*
> + stack 0 = array right index
> + stack 1 = array left index */
> +
> + if (long_index > long_count) {
> + reverse = 1;
> + long_temp = long_count;
> + long_count = 1 + long_index -
> + long_count;
> + long_index = long_temp;
> +
> + /* reverse POPA is not supported */
> + status = -ERANGE;
> + break;
> + } else
> + long_count = 1 + long_count -
> + long_index;
> +
> + }
> +
> + /* pop the data */
> + long_temp = stack[--stack_ptr];
> +
> + if (long_count < 1) {
> + status = -ERANGE;
> + break;
> + }
> +
> + for (i = 0; i < long_count; ++i) {
> + if (long_temp & (1L << (s32) i))
> + charptr_temp[long_index >> 3L] |=
> + (1L << (long_index & 7L));
> + else
> + charptr_temp[long_index >> 3L] &=
> + ~(1L << (long_index & 7L));
> +
> + ++long_index;
> + }
> +
> + 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_index = 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_temp = long_count;
> + long_count = stack[--stack_ptr];
> +
> + if (long_index > long_temp) {
> + reverse = 1;
> + long_index = long_temp;
> + }
> + }
> +
> + charptr_temp = (u8 *)vars[args[0]];
> +
> + if (reverse) {
> + /*
> + allocate a buffer and reverse the data order */
> + charptr_temp2 = charptr_temp;
> + charptr_temp = kzalloc((long_count >> 3) + 1,
> + GFP_KERNEL);
> + if (charptr_temp == NULL) {
> + status = -ENOMEM;
> + break;
> + }
> +
> + long_temp = long_index + long_count - 1;
> + long_index2 = 0;
> + while (long_index2 < long_count) {
> + if (charptr_temp2[long_temp >> 3] &
> + (1 << (long_temp & 7)))
> + charptr_temp[long_index2 >> 3] |= (1 << (long_index2 & 7));
> + else
> + charptr_temp[long_index2 >> 3] &= ~(1 << (long_index2 & 7));
> +
> + --long_temp;
> + ++long_index2;
> + }
> + }
> +
> + if (opcode == 0x51) /* DS */
> + status = altera_drscan(astate, long_count,
> + charptr_temp, long_index);
> + else /* IS */
> + status = altera_irscan(astate, long_count,
> + charptr_temp, long_index);
> +
> + if (reverse)
> + kfree(charptr_temp);
> +
> + 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_temp = (u8 *)vars[args[0]];
> + status = altera_set_dr_pre(&astate->js, count, index,
> + charptr_temp);
> + 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_temp = (u8 *)vars[args[0]];
> + status = altera_set_dr_post(&astate->js, count, index,
> + charptr_temp);
> + 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_temp = (u8 *)vars[args[0]];
> + status = altera_set_ir_pre(&astate->js, count, index,
> + charptr_temp);
> +
> + 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_temp = (u8 *)vars[args[0]];
> + status = altera_set_ir_post(&astate->js, count, index,
> + charptr_temp);
> +
> + 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_temp = stack[--stack_ptr];
> + altera_export_int(name, long_temp);
> + }
> + 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_temp = (long *)vars[variable_id];
> + stack[stack_ptr - 1] = longptr_temp[index];
> + } else if ((attrs[variable_id] & 0x1f) == 0x1c) {
> + /* read-only integer array */
> + long_temp = vars[variable_id] +
> + (sizeof(long) * index);
> + stack[stack_ptr - 1] =
> + get_unaligned_be32(&p[long_temp]);
> + } 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_temp = (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_temp = 0L;
> +
> + for (i = 0; i < count; ++i)
> + if (charptr_temp[(i + index) >> 3] &
> + (1 << ((i + index) & 7)))
> + long_temp |= (1L << i);
> +
> + stack[stack_ptr - 1] = long_temp;
> +
> + 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_temp = stack[--stack_ptr];
> +
> + if (long_temp > var_size[variable_id]) {
> + var_size[variable_id] = long_temp;
> +
> + if (attrs[variable_id] & 0x10)
> + /* allocate integer array */
> + long_temp *= sizeof(long);
> + else
> + /* allocate Boolean array */
> + long_temp = (long_temp + 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_temp, 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_temp = (u8 *)(vars[variable_id]);
> + for (index = 0; index < count; ++index)
> + charptr_temp[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_index = stack[--stack_ptr];/* right indx */
> + long_index2 = stack[--stack_ptr];/* left indx */
> +
> + if (long_index > long_index2) {
> + /* reverse indices not supported */
> + status = -ERANGE;
> + break;
> + }
> +
> + long_count = 1 + long_index2 - long_index;
> +
> + charptr_temp = (u8 *)vars[variable_id];
> + charptr_temp2 = NULL;
> +
> + if ((long_index & 7L) != 0) {
> + s32 k = long_index;
> + charptr_temp2 =
> + kzalloc(((long_count + 7L) / 8L),
> + GFP_KERNEL);
> + if (charptr_temp2 == NULL) {
> + status = -ENOMEM;
> + break;
> + }
> +
> + for (i = 0; i < long_count; ++i) {
> + if (charptr_temp[k >> 3] &
> + (1 << (k & 7)))
> + charptr_temp2[i >> 3] |=
> + (1 << (i & 7));
> + else
> + charptr_temp2[i >> 3] &=
> + ~(1 << (i & 7));
> +
> + ++k;
> + }
> + charptr_temp = charptr_temp2;
> +
> + } else if (long_index != 0)
> + charptr_temp = &charptr_temp[long_index >> 3];
> +
> + altera_export_bool_array(name, charptr_temp,
> + long_count);
> +
> + /* free allocated buffer */
> + if ((long_index & 7L) != 0)
> + kfree(charptr_temp2);
> +
> + 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_index2 = destination start index */
> +
> + 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" the 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_temp =
> + (var_size[variable_id] + 7L) >> 3L;
> + charptr_temp2 = (u8 *)vars[variable_id];
> + charptr_temp =
> + kzalloc(long_temp, GFP_KERNEL);
> + vars[variable_id] = (long)charptr_temp;
> +
> + if (vars[variable_id] == 0) {
> + status = -ENOMEM;
> + break;
> + }
> +
> + /* zero the buffer */
> + for (long_index = 0L; long_index < long_temp;
> + ++long_index)
> + charptr_temp[long_index] = 0;
> +
> + /* copy previous contents into buffer */
> + for (long_index = 0L;
> + long_index < var_size[variable_id];
> + ++long_index) {
> + long_index2 = long_index;
> +
> + if (charptr_temp2[long_index2 >> 3] &
> + (1 << (long_index2 & 7)))
> + charptr_temp[long_index >> 3] |=
> + (1 << (long_index & 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_temp = (u8 *)vars[args[1]];
> + charptr_temp2 = (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_temp2[index >> 3] &
> + (1 << (index & 7)))
> + charptr_temp[index2 >> 3] |=
> + (1 << (index2 & 7));
> + else
> + charptr_temp[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_temp =
> + (var_size[variable_id] + 7L) >> 3L;
> + charptr_temp2 = (u8 *)vars[variable_id];
> + charptr_temp =
> + kzalloc(long_temp, GFP_KERNEL);
> + vars[variable_id] = (long)charptr_temp;
> +
> + if (vars[variable_id] == 0) {
> + status = -ENOMEM;
> + break;
> + }
> +
> + /* zero the buffer */
> + for (long_index = 0L; long_index < long_temp;
> + ++long_index)
> + charptr_temp[long_index] = 0;
> +
> + /* copy previous contents into buffer */
> + for (long_index = 0L;
> + long_index < var_size[variable_id];
> + ++long_index) {
> + long_index2 = long_index;
> +
> + if (charptr_temp2[long_index2 >> 3] &
> + (1 << (long_index2 & 7)))
> + charptr_temp[long_index >> 3] |=
> + (1 << (long_index & 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_temp = (u8 *)vars[args[0]];
> + charptr_temp2 = (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_temp,
> + scan_index,
> + charptr_temp2,
> + capture_index);
> + else /* ISC */
> + status = altera_swap_ir(astate,
> + long_count,
> + charptr_temp,
> + scan_index,
> + charptr_temp2,
> + 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_temp = stack[--stack_ptr];
> +
> + if (long_temp != 0L)
> + status = altera_wait_cycles(astate, long_temp,
> + args[0]);
> +
> + long_temp = stack[--stack_ptr];
> +
> + if ((status == 0) && (long_temp != 0L))
> + status = altera_wait_msecs(astate,
> + long_temp,
> + 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_temp = 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_temp = 0L;
> + }
> + ++index1;
> + ++index2;
> + ++mask_index;
> + }
> + }
> +
> + stack[stack_ptr++] = long_temp;
> +
> + 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 ((key != NULL) &&
> + (strnicmp(key, key_ptr, strlen(key_ptr)) == 0)) {
> + 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(sizeof(char) * 33, GFP_KERNEL);
> + if (!key)
> + return -ENOMEM;
> + value = kzalloc(sizeof(char) * 257, 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/misc/altera.h b/include/misc/altera.h
> new file mode 100644
> index 0000000..94c0c61
> --- /dev/null
> +++ b/include/misc/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_ */

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