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Date: Mon, 18 Oct 2010 00:28:30 +0300
From: "Igor M. Liplianin" <liplianin@...by>
To: Mauro Carvalho Chehab <mchehab@...radead.org>
Cc: linux-media@...r.kernel.org, Abylai Ospan <aospan@...up.ru>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [GIT PATCHES FOR 2.6.37] Support for NetUP Dual DVB-T/C CI RF card V.2
В сообщении от 17 октября 2010 20:52:28 автор Mauro Carvalho Chehab написал:
> Em 17-10-2010 14:55, Igor M. Liplianin escreveu:
> > Patches to support for NetUP Dual DVB-T/C-CI RF from NetUP Inc.
> >
> > http://linuxtv.org/wiki/index.php/NetUP_Dual_DVB_T_C_CI_RF
> >
> > Version 2, Altera FPGA firmware download module reworked.
> >
> > Features:
> >
> > PCI-e x1
> > Supports two DVB-T/DVB-C transponders simultaneously
> > Supports two analog audio/video channels simultaneously
> > Independent descrambling of two transponders
> > Hardware PID filtering
> >
> > Components:
> >
> > Conexant CX23885
> > STM STV0367 low-power and ultra-compact combo DVB-T/C single-chip
> > receiver Xceive XC5000 silicon TV tuner
> > Altera FPGA for Common Interafce
> >
> > The following changes since commit 1c8c51f7413ec522c7b729c8ebc5ce815fb7d4a8:
> > V4L/DVB: drivers/media/IR/ene_ir.c: fix NULL dereference (2010-10-17
> > 09:50:42 -0200)
> >
> > are available in the git repository at:
> > http://udev.netup.ru/git/v4l-dvb.git netup-for-media-tree-2
> >
> > Abylay Ospan (6):
> > cx23885: Altera FPGA CI interface reworked.
> > stv0367: change default value for AGC register.
> > stv0367: implement uncorrected blocks counter.
> > cx23885, cimax2.c: Fix case of two CAM insertion irq.
> > Fix CI code for NetUP Dual DVB-T/C CI RF card
> > Force xc5000 firmware loading for NetUP Dual DVB-T/C CI RF card
> >
> > Igor M. Liplianin (14):
> > Altera FPGA firmware download module.
> > Altera FPGA based CI driver module.
> > Support for stv0367 multi-standard demodulator.
> > xc5000: add support for DVB-C tuning.
> > Initial commit to support NetUP Dual DVB-T/C CI RF card.
> > cx23885: implement tuner_bus parameter for cx23885_board structure.
> > cx23885: implement num_fds_portb, num_fds_portc parameters for
> > cx23885_board structure. stv0367: Fix potential divide error
> > cx23885: remove duplicate set interrupt mask
> > stv0367: coding style corrections
> > cx25840: Fix subdev registration and typo in cx25840-core.c
> > cx23885: 0xe becomes 0xc again for NetUP Dual DVB-S2
> > cx23885: disable MSI for NetUP cards, otherwise CI is not working
> > cx23885, altera-ci: enable all PID's less than 0x20 in hardware PID
> > filter.
> >
> > drivers/media/common/tuners/xc5000.c | 18 +
> > drivers/media/dvb/frontends/Kconfig | 7 +
> > drivers/media/dvb/frontends/Makefile | 1 +
> > drivers/media/dvb/frontends/stv0367.c | 3419
> > +++++++++++++++++++++++++ drivers/media/dvb/frontends/stv0367.h |
> > 62 +
> > drivers/media/dvb/frontends/stv0367_priv.h | 211 ++
> > drivers/media/dvb/frontends/stv0367_regs.h | 3614
> > +++++++++++++++++++++++++++ drivers/media/video/cx23885/Kconfig
> > | 12 +-
> > drivers/media/video/cx23885/Makefile | 1 +
> > drivers/media/video/cx23885/altera-ci.c | 841 +++++++
> > drivers/media/video/cx23885/altera-ci.h | 102 +
> > drivers/media/video/cx23885/cimax2.c | 24 +-
> > drivers/media/video/cx23885/cx23885-cards.c | 116 +-
> > drivers/media/video/cx23885/cx23885-core.c | 35 +-
> > drivers/media/video/cx23885/cx23885-dvb.c | 175 ++-
> > drivers/media/video/cx23885/cx23885-reg.h | 1 +
> > drivers/media/video/cx23885/cx23885-video.c | 7 +-
> > drivers/media/video/cx23885/cx23885.h | 7 +-
> > drivers/media/video/cx25840/cx25840-core.c | 4 +-
> > drivers/misc/Kconfig | 1 +
> > drivers/misc/Makefile | 1 +
> > drivers/misc/stapl-altera/Kconfig | 8 +
> > drivers/misc/stapl-altera/Makefile | 3 +
> > drivers/misc/stapl-altera/altera.c | 2603 +++++++++++++++++++
> > drivers/misc/stapl-altera/jbicomp.c | 163 ++
> > drivers/misc/stapl-altera/jbiexprt.h | 32 +
> > drivers/misc/stapl-altera/jbijtag.c | 1038 ++++++++
> > drivers/misc/stapl-altera/jbijtag.h | 83 +
> > drivers/misc/stapl-altera/jbistub.c | 70 +
> > include/misc/altera.h | 49 +
> > 30 files changed, 12674 insertions(+), 34 deletions(-)
> > create mode 100644 drivers/media/dvb/frontends/stv0367.c
> > create mode 100644 drivers/media/dvb/frontends/stv0367.h
> > create mode 100644 drivers/media/dvb/frontends/stv0367_priv.h
> > create mode 100644 drivers/media/dvb/frontends/stv0367_regs.h
> > create mode 100644 drivers/media/video/cx23885/altera-ci.c
> > create mode 100644 drivers/media/video/cx23885/altera-ci.h
> > create mode 100644 drivers/misc/stapl-altera/Kconfig
> > create mode 100644 drivers/misc/stapl-altera/Makefile
> > create mode 100644 drivers/misc/stapl-altera/altera.c
> > create mode 100644 drivers/misc/stapl-altera/jbicomp.c
> > create mode 100644 drivers/misc/stapl-altera/jbiexprt.h
> > create mode 100644 drivers/misc/stapl-altera/jbijtag.c
> > create mode 100644 drivers/misc/stapl-altera/jbijtag.h
> > create mode 100644 drivers/misc/stapl-altera/jbistub.c
> > create mode 100644 include/misc/altera.h
>
> There are still a few issues at FPGA 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.
> >
> > Signed-off-by: Igor M. Liplianin <liplianin@...up.ru>
> > Signed-off-by: Mauro Carvalho Chehab <mchehab@...hat.com>
> > ---
> >
> > drivers/misc/Kconfig | 1 +
> > drivers/misc/Makefile | 1 +
> > drivers/misc/stapl-altera/Kconfig | 8 +
> > drivers/misc/stapl-altera/Makefile | 3 +
> > drivers/misc/stapl-altera/altera.c | 2603
> > ++++++++++++++++++++++++++++++++++ drivers/misc/stapl-altera/jbicomp.c
> > | 163 +++
> > drivers/misc/stapl-altera/jbiexprt.h | 32 +
> > drivers/misc/stapl-altera/jbijtag.c | 1038 ++++++++++++++
> > drivers/misc/stapl-altera/jbijtag.h | 83 ++
> > drivers/misc/stapl-altera/jbistub.c | 70 +
> > include/misc/altera.h | 49 +
> > 11 files changed, 4051 insertions(+), 0 deletions(-)
> > create mode 100644 drivers/misc/stapl-altera/Kconfig
> > create mode 100644 drivers/misc/stapl-altera/Makefile
> > create mode 100644 drivers/misc/stapl-altera/altera.c
> > create mode 100644 drivers/misc/stapl-altera/jbicomp.c
> > create mode 100644 drivers/misc/stapl-altera/jbiexprt.h
> > create mode 100644 drivers/misc/stapl-altera/jbijtag.c
> > create mode 100644 drivers/misc/stapl-altera/jbijtag.h
> > create mode 100644 drivers/misc/stapl-altera/jbistub.c
> > create mode 100644 include/misc/altera.h
> >
> > diff --git a/drivers/misc/Kconfig b/drivers/misc/Kconfig
> > index 9b089df..3cfc47c 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/stapl-altera/Kconfig"
> >
> > endif # MISC_DEVICES
> >
> > diff --git a/drivers/misc/Makefile b/drivers/misc/Makefile
> > index 67552d6..58e794c 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 += stapl-altera/
> > diff --git a/drivers/misc/stapl-altera/Kconfig
> > b/drivers/misc/stapl-altera/Kconfig new file mode 100644
> > index 0000000..19ba4a9
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/Kconfig
> > @@ -0,0 +1,8 @@
> > +comment "Altera FPGA firmware download module"
> > +
> > +config STAPL_ALTERA
> > + 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/stapl-altera/Makefile
> > b/drivers/misc/stapl-altera/Makefile new file mode 100644
> > index 0000000..db56178
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/Makefile
> > @@ -0,0 +1,3 @@
> > +stapl-altera-objs = jbistub.o jbijtag.o jbicomp.o altera.o
> > +
> > +obj-$(CONFIG_STAPL_ALTERA) += stapl-altera.o
> > diff --git a/drivers/misc/stapl-altera/altera.c
> > b/drivers/misc/stapl-altera/altera.c new file mode 100644
> > index 0000000..989bb79
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/altera.c
> > @@ -0,0 +1,2603 @@
> > +/*
> > + * altera.c
> > + *
> > + * altera FPGA driver
> > + *
> > + * Copyright (C) Altera Corporation 1998-2001
> > + * Copyright (C) 2010 NetUP Inc.
> > + * Copyright (C) 2010 Igor M. Liplianin <liplianin@...up.ru>
> > + *
> > + * 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/string.h>
> > +#include <linux/firmware.h>
> > +#include <linux/slab.h>
> > +#include <misc/altera.h>
> > +#include "jbiexprt.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@...up.ru>");
> > +MODULE_LICENSE("GPL");
> > +
> > +#include "jbijtag.h"
> > +
> > +#define JBI_STACK_SIZE 128
> > +
> > +#define JBIC_MESSAGE_LENGTH 1024
> > +
> > +#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 jbi_procinfo {
> > + char *name;
> > + u8 attrs;
> > + struct jbi_procinfo *next;
> > +};
> > +
> > +/* This function checks if enough parameters are available on the stack.
> > */ +static int jbi_check_stack(int stack_ptr, int count, int *status) +{
> > + if (stack_ptr < count) {
> > + *status = -EOVERFLOW;
> > + return 0;
> > + }
> > +
> > + return 1;
> > +}
> > +
> > +static void jbi_export_integer(char *key, s32 value)
> > +{
> > + dprintk("Export: key = \"\", value = 0\n", key, value);
> > +}
> > +
> > +#define HEX_LINE_CHARS 72
> > +#define HEX_LINE_BITS (HEX_LINE_CHARS * 4)
> > +
> > +static void jbi_export_boolean_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 = \"\", 0 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], "0", value);
> > + value = 0;
> > + --j;
> > + }
> > + }
> > + if ((k & 3) > 0)
> > + sprintf(&string[j], "0", value);
> > +
> > + dprintk("\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], "0", value);
> > + value = 0;
> > + --j;
> > + }
> > + }
> > + if ((i & 3) > 0)
> > + sprintf(&string[j], "0", value);
> > +
> > + dprintk("Export: key = \"\", 0 bits, value = HEX \n",
> > + key, count, string);
> > + }
> > +}
> > +
> > +static int jbi_execute(struct altera_config *astate,
> > + u8 *p,
> > + s32 program_size,
> > + s32 *error_address,
> > + int *exit_code,
> > + int *format_version)
> > +{
> > + static char msg_buff[JBIC_MESSAGE_LENGTH + 1];
> > + static long stack[JBI_STACK_SIZE] = {0L};/*64 bits*/
>
> On Linux, long int doesn't mean 64 bits. If you want to use a data with 64
> bits, use, instead: u64, for unsigned (or s64, for signed).
>
> Also, it doesn't seem to be a good idea to define those two data static.
> The proper way is to move those two data to some struct, for example, to
> astate. You may declare it as:
>
> struct altera_config {
> void *dev;
> u8 *action;
> int (*jtag_io) (void *dev, int tms, int tdi, int tdo);
> char msg_buff[JBIC_MESSAGE_LENGTH + 1];
> u64 stack[JBI_STACK_SIZE];
> };
>
> when you'll alloc it with kzconfig, stack will be initialized to zero
> already.
>
> One advantage is that, if you have two devices, a FPGA init of one device
> wouldn't interfere in the other, even if they happen in parallel.
>
> If you do that, you can just do here:
>
> char *msg_buf = astate->msg_buf;
> u64 *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;/*64bits*/
>
> u64.
>
> > + 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;/*64bits*/
>
> u64.
>
> > + 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("\n", __func__);
> > +
> > + /* Read header information */
> > + if (program_size > 52L) {
> > + first_word = get_unaligned_be32(&p[0]);
> > + version = (int)(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;
> > + /* 64 bits */
> > + vars = kmalloc((u32)sym_count * sizeof(long), GFP_KERNEL);
> > +
> > + if (vars == NULL)
> > + status = -ENOMEM;
> > +
> > + if (status == 0) {
> > + var_size = kmalloc((u32)sym_count * sizeof(s32), GFP_KERNEL);
> > +
> > + if (var_size == NULL)
> > + status = -ENOMEM;
> > + }
> > +
> > + if (status == 0) {
> > + attrs = (char *)kmalloc((u32)sym_count, GFP_KERNEL);
> > +
> > + if (attrs == NULL)
> > + status = -ENOMEM;
> > + }
> > +
> > + if ((status == 0) && (version > 0)) {
> > + proc_attributes = (u8 *)kmalloc((u32)proc_count, GFP_KERNEL);
> > +
> > + if (proc_attributes == NULL)
> > + status = -ENOMEM;
> > + }
>
> Hmm... are you initializing proc_attributes at the loop bellow? Otherwise,
> the better is to use kzalloc.
>
> > +
> > + if (status != 0)
> > + goto exit_done;
> > +
> > + delta = version * 2;
> > +
> > + for (i = 0; i < (u32)sym_count; ++i) {
> > + offset = (u32)(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)kmalloc(uncomp_size, GFP_KERNEL);
>
> kzalloc?
>
> > + if (vars[i] == 0L)
> > + status = -ENOMEM;
> > + else {
> > + /* set flag so buffer
> > + will be freed later */
> > + attrs[i] |= 0x80;
> > +
> > + /* uncompress the data */
> > + if (jbi_uncompress(&p[data_sect + value],
> > + var_size[i],
> > + (u8 *)vars[i],/*64 bits*/
> > + uncomp_size,
> > + version) != uncomp_size)
> > + /* decompression failed */
> > + status = -EIO;
> > + else /*64 bits?*/
> > + var_size[i] = uncomp_size * 8L;
> > +
> > + }
> > + } else if ((attrs[i] & 0x1e) == 0x0c) {
> > + /* initialized Boolean array */
> > + /*64 bits*/
> > + 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 = (u32)(var_size[i] *
> > + sizeof(s32));
> > + else
> > + /* Boolean array */
> > + size = (u32)
> > + ((var_size[i] + 7L) / 8L);
> > + /*64 bits*/
> > + vars[i] = (long)kmalloc(size, GFP_KERNEL);
>
> kzalloc?
>
> > +
> > + if (vars[i] == 0) {
> > + status = -ENOMEM;
> > + } else {
> > + /* zero out memory */
> > + for (j = 0; j < size; ++j)
> > + /*64 bits*/
> > + ((u8 *)(vars[i]))[j] = 0;
> > +
> > + }
> > + } else
> > + vars[i] = 0;
> > +
> > + } else
> > + vars[i] = 0;
> > +
> > + }
> > +
> > +exit_done:
> > + if (status != 0)
> > + done = 1;
> > +
> > + jbi_init_jtag();
> > +
> > + 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 (astate->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 = (char *)&p[str_table + name_id];
> > +
> > + if (strnicmp(astate->action, name, strlen(name)) == 0) {
> > + action_found = 1;
> > + current_proc = (int)
> > + 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] = (u8)
> > + (p[proc_table +
> > + (13 * i) + 8] &
> > + 0x03);
> > +
> > + /*
> > + BIT0 - OPTIONAL
> > + BIT1 - RECOMMENDED
> > + BIT6 - FORCED OFF
> > + BIT7 - FORCED ON
> > + */
> > +
> > + i = (u32)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 = (u32)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 = (u32)(p[pc] & 0xff);
> > + opcode_address = pc;
> > + ++pc;
> > +
> > + if (debug > 1)
> > + printk("opcode: 00\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 (jbi_check_stack(stack_ptr, 1, &status)) {
> > + stack[stack_ptr] = stack[stack_ptr - 1];
> > + ++stack_ptr;
> > + }
> > + break;
> > + case OP_SWP:
> > + if (jbi_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 (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] += stack[stack_ptr];
> > + }
> > + break;
> > + case OP_SUB:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] -= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_MULT:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] *= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_DIV:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] /= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_MOD:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] %= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_SHL:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] <<= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_SHR:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] >>= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_NOT:
> > + if (jbi_check_stack(stack_ptr, 1, &status))
> > + stack[stack_ptr - 1] ^= (-1L);
> > +
> > + break;
> > + case OP_AND:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] &= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_OR:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] |= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_XOR:
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + --stack_ptr;
> > + stack[stack_ptr - 1] ^= stack[stack_ptr];
> > + }
> > + break;
> > + case OP_INV:
> > + if (!jbi_check_stack(stack_ptr, 1, &status))
> > + break;
> > + stack[stack_ptr - 1] = stack[stack_ptr - 1] ? 0L : 1L;
> > + break;
> > + case OP_GT:
> > + if (!jbi_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 (!jbi_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 = (u32)
> > + get_unaligned_be32(&p[proc_table +
> > + (13 * current_proc) + 4]);
> > + while ((i != 0) &&
> > + ((proc_attributes[i] == 1) ||
> > + ((proc_attributes[i] & 0xc0) == 0x40)))
> > + i = (u32)
> > + 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 (jbi_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 (jbi_check_stack(stack_ptr, 4, &status)) {
> > + s32 a = stack[--stack_ptr];
> > + s32 b = stack[--stack_ptr];
> > + long_temp = stack[--stack_ptr];
> > + count = (u32)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 (!jbi_check_stack(stack_ptr, 1, &status))
> > + break;
> > + sprintf(&msg_buff[strlen(msg_buff)],
> > + "0", 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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + long_temp = stack[--stack_ptr];
> > + count = (u32)stack[--stack_ptr];
> > + put_unaligned_le32(long_temp, &charbuf[0]);
> > + status = jbi_do_drscan(astate, count, charbuf, 0);
> > + break;
> > + case OP_DSSC:
> > + /*
> > + DRSCAN short with capture
> > + ...stack 0 is scan data
> > + ...stack 1 is count
> > + */
> > + if (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + long_temp = stack[--stack_ptr];
> > + count = (u32)stack[stack_ptr - 1];
> > + put_unaligned_le32(long_temp, &charbuf[0]);
> > + status = jbi_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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + long_temp = stack[--stack_ptr];
> > + count = (u32)stack[--stack_ptr];
> > + put_unaligned_le32(long_temp, &charbuf[0]);
> > + status = jbi_do_irscan(astate, count, charbuf, 0);
> > + break;
> > + case OP_ISSC:
> > + /*
> > + IRSCAN short with capture
> > + ...stack 0 is scan data
> > + ...stack 1 is count
> > + */
> > + if (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + long_temp = stack[--stack_ptr];
> > + count = (u32)stack[stack_ptr - 1];
> > + put_unaligned_le32(long_temp, &charbuf[0]);
> > + status = jbi_swap_ir(astate, count, charbuf,
> > + 0, charbuf, 0);
> > + stack[stack_ptr - 1] = get_unaligned_le32(&charbuf[0]);
> > + break;
> > + case OP_DPR:
> > + if (!jbi_check_stack(stack_ptr, 1, &status))
> > + break;
> > + count = (u32)stack[--stack_ptr];
> > + status = jbi_set_dr_preamble(count, 0, NULL);
> > + break;
> > + case OP_DPRL:
> > + /*
> > + DRPRE with literal data
> > + ...stack 0 is count
> > + ...stack 1 is literal data
> > + */
> > + if (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + count = (u32)stack[--stack_ptr];
> > + long_temp = stack[--stack_ptr];
> > + put_unaligned_le32(long_temp, &charbuf[0]);
> > + status = jbi_set_dr_preamble(count, 0, charbuf);
> > + break;
> > + case OP_DPO:
> > + /*
> > + DRPOST
> > + ...stack 0 is count
> > + */
> > + if (jbi_check_stack(stack_ptr, 1, &status)) {
> > + count = (u32)stack[--stack_ptr];
> > + status = jbi_set_dr_postamble(count, 0, NULL);
> > + }
> > + break;
> > + case OP_DPOL:
> > + /*
> > + DRPOST with literal data
> > + ...stack 0 is count
> > + ...stack 1 is literal data
> > + */
> > + if (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + count = (u32)stack[--stack_ptr];
> > + long_temp = stack[--stack_ptr];
> > + put_unaligned_le32(long_temp, &charbuf[0]);
> > + status = jbi_set_dr_postamble(count, 0, charbuf);
> > + break;
> > + case OP_IPR:
> > + if (jbi_check_stack(stack_ptr, 1, &status)) {
> > + count = (u32)stack[--stack_ptr];
> > + status = jbi_set_ir_preamble(count, 0, NULL);
> > + }
> > + break;
> > + case OP_IPRL:
> > + /*
> > + IRPRE with literal data
> > + ...stack 0 is count
> > + ...stack 1 is literal data
> > + */
> > + if (jbi_check_stack(stack_ptr, 2, &status)) {
> > + count = (u32)stack[--stack_ptr];
> > + long_temp = stack[--stack_ptr];
> > + put_unaligned_le32(long_temp, &charbuf[0]);
> > + status = jbi_set_ir_preamble(count, 0, charbuf);
> > + }
> > + break;
> > + case OP_IPO:
> > + /*
> > + IRPOST
> > + ...stack 0 is count
> > + */
> > + if (jbi_check_stack(stack_ptr, 1, &status)) {
> > + count = (u32)stack[--stack_ptr];
> > + status = jbi_set_ir_postamble(count, 0, NULL);
> > + }
> > + break;
> > + case OP_IPOL:
> > + /*
> > + IRPOST with literal data
> > + ...stack 0 is count
> > + ...stack 1 is literal data
> > + */
> > + if (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + count = (u32)stack[--stack_ptr];
> > + long_temp = stack[--stack_ptr];
> > + put_unaligned_le32(long_temp, &charbuf[0]);
> > + status = jbi_set_ir_postamble(count, 0, charbuf);
> > + break;
> > + case OP_PCHR:
> > + if (jbi_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 (jbi_check_stack(stack_ptr, 1, &status))
> > + *exit_code = (int) stack[--stack_ptr];
> > +
> > + done = 1;
> > + break;
> > + case OP_EQU:
> > + if (!jbi_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 (jbi_check_stack(stack_ptr, 1, &status))
> > + --stack_ptr;
> > +
> > + break;
> > + case OP_ABS:
> > + if (!jbi_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 (jbi_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 (jbi_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 (jbi_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 (jbi_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 (jbi_check_stack(stack_ptr, index, &status)) {
> > + stack[stack_ptr] = stack[stack_ptr - index];
> > + ++stack_ptr;
> > + }
> > +
> > + /* SWPN 2 */
> > + index = 2 + 1;
> > + if (jbi_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 (jbi_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 (jbi_check_stack(stack_ptr, index, &status)) {
> > + stack[stack_ptr] = stack[stack_ptr - index];
> > + ++stack_ptr;
> > + }
> > +
> > + /* DUPN 6 */
> > + index = 6 + 1;
> > + if (jbi_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 (jbi_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],
> > + (char *)&p[str_table + args[0]],
> > + JBIC_MESSAGE_LENGTH - count);
> > + break;
> > + case OP_SINT:
> > + /*
> > + STATE intermediate state
> > + ...argument 0 is state code
> > + */
> > + status = jbi_goto_jtag_state(astate, (int) args[0]);
> > + break;
> > + case OP_ST:
> > + /*
> > + STATE final state
> > + ...argument 0 is state code
> > + */
> > + status = jbi_goto_jtag_state(astate, (int) args[0]);
> > + break;
> > + case OP_ISTP:
> > + /*
> > + IRSTOP state
> > + ...argument 0 is state code
> > + */
> > + status = jbi_set_irstop_state((int) args[0]);
> > + break;
> > + case OP_DSTP:
> > + /*
> > + DRSTOP state
> > + ...argument 0 is state code
> > + */
> > + status = jbi_set_drstop_state((int) 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 = ((int) args[0]) + 1;
> > + if (jbi_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 = ((int) args[0]) + 1;
> > + if (jbi_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 (jbi_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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + variable_id = (u32)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 = (u32)var_size[variable_id];
> > + long_temp = vars[variable_id];
> > + /*64 bits*/
> > + longptr_temp = (long *)
> > + kmalloc(count * sizeof(long),
> > + GFP_KERNEL);
> > + /*64 bits*/
> > + 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) {
> > + /*64 QWORD?*/
> > + longptr_temp[i] = get_unaligned_be32(&p[long_temp]);
> > + long_temp += sizeof(long);/*64*/
> > + }
> > +
> > + /*
> > + 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 {
> > + /*64 bits*/
> > + longptr_temp = (long *)vars[variable_id];
> > +
> > + /* pop the array index */
> > + index = (u32)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 (!jbi_check_stack(stack_ptr, 3, &status))
> > + break;
> > + variable_id = (u32)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 =
> > + kmalloc((u32)long_temp, GFP_KERNEL);
> > + /*64 bits*/
> > + 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 < (u32)long_count; ++i) {
> > + if (long_temp & (1L << (s32) i))
> > + charptr_temp[long_index >> 3L] |=
> > + (1L << (long_index & 7L));
> > + else
> > + charptr_temp[long_index >> 3L] &=
> > + ~(u32)(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 (jbi_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 (!jbi_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 = kmalloc((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 = jbi_do_drscan(astate, (u32)long_count,
> > + charptr_temp, (u32)long_index);
> > + else /* IS */
> > + status = jbi_do_irscan(astate, (u32)long_count,
> > + charptr_temp, (u32)long_index);
> > +
> > + if (reverse && (charptr_temp != NULL))
> > + 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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + index = (u32)stack[--stack_ptr];
> > + count = (u32)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 = jbi_set_dr_preamble(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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + index = (u32)stack[--stack_ptr];
> > + count = (u32)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 = jbi_set_dr_postamble(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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + index = (u32)stack[--stack_ptr];
> > + count = (u32)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 = jbi_set_ir_preamble(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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + index = (u32)stack[--stack_ptr];
> > + count = (u32)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 = jbi_set_ir_postamble(count, index,
> > + charptr_temp);
> > +
> > + break;
> > + case OP_EXPT:
> > + /*
> > + EXPORT
> > + ...argument 0 is string ID
> > + ...stack 0 is integer expression
> > + */
> > + if (jbi_check_stack(stack_ptr, 1, &status)) {
> > + name = (char *)&p[str_table + args[0]];
> > + long_temp = stack[--stack_ptr];
> > + jbi_export_integer(name, long_temp);
> > + }
> > + break;
> > + case OP_PSHE:
> > + /*
> > + Push integer array element
> > + ...argument 0 is variable ID
> > + ...stack 0 is array index
> > + */
> > + if (!jbi_check_stack(stack_ptr, 1, &status))
> > + break;
> > + variable_id = (u32)args[0];
> > + index = (u32)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);/*64*/
> > + 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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + variable_id = (u32)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 = (u32)stack[--stack_ptr];
> > +
> > + /* pop the array index */
> > + index = (u32)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 (!jbi_check_stack(stack_ptr, 1, &status))
> > + break;
> > + variable_id = (u32)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) &&
> > + (vars[variable_id] != 0)) {
> > + kfree((void *)vars[variable_id]);
> > + vars[variable_id] = 0;
> > + }
> > +
> > + /*
> > + Allocate a new buffer
> > + of the requested size */
> > + /*64 bits*/
> > + vars[variable_id] = (long)
> > + kmalloc((u32)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 = (u32)
> > + ((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 (!jbi_check_stack(stack_ptr, 3, &status))
> > + break;
> > + if (version == 0) {
> > + /* EXPV is not supported in JBC 1.0 */
> > + bad_opcode = 1;
> > + break;
> > + }
> > + name = (char *)&p[str_table + args[0]];
> > + variable_id = (u32)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 = kmalloc((u32)
> > + ((long_count + 7L) / 8L), GFP_KERNEL);
> > + if (charptr_temp2 == NULL) {
> > + status = -ENOMEM;
> > + break;
> > + }
> > +
> > + for (i = 0; i < (u32)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];
> > +
> > + jbi_export_boolean_array(name, charptr_temp,
> > + long_count);
> > +
> > + /* free allocated buffer */
> > + if (((long_index & 7L) != 0) && (charptr_temp2 != NULL))
> > + 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 (!jbi_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 = (u32)copy_count;
> > + index = (u32)copy_index;
> > + index2 = (u32)copy_index2;
> > +
> > + /*
> > + If destination is a read-only array, allocate a buffer
> > + and convert it to a writable array */
> > + variable_id = (u32)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 =
> > + kmalloc((u32)long_temp, GFP_KERNEL);
> > + /*64 bits*/
> > + 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] &=
> > + ~(u32)(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 (!jbi_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 = (u32)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 =
> > + kmalloc((u32)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 = jbi_swap_dr(astate,
> > + (u32)long_count,
> > + charptr_temp,
> > + (u32)scan_index,
> > + charptr_temp2,
> > + (u32)capture_index);
> > + else /* ISC */
> > + status = jbi_swap_ir(astate,
> > + (u32)long_count,
> > + charptr_temp,
> > + (u32)scan_index,
> > + charptr_temp2,
> > + (u32)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 (!jbi_check_stack(stack_ptr, 2, &status))
> > + break;
> > + long_temp = stack[--stack_ptr];
> > +
> > + if (long_temp != 0L)
> > + status = jbi_do_wait_cycles(astate, long_temp,
> > + (u32)args[0]);
> > +
> > + long_temp = stack[--stack_ptr];
> > +
> > + if ((status == 0) && (long_temp != 0L))
> > + status = jbi_do_wait_microseconds(astate,
> > + long_temp,
> > + (u32)args[0]);
> > +
> > + if ((status == 0) && (args[1] != args[0]))
> > + status = jbi_goto_jtag_state(astate,
> > + (u32)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 (!jbi_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 = (u32)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 >= JBI_STACK_SIZE))
> > + status = -EOVERFLOW;
> > +
> > + if (status != 0) {
> > + done = 1;
> > + *error_address = (s32)(opcode_address - code_sect);
> > + }
> > + }
> > +
> > + jbi_free_jtag_padding_buffers(astate/*, reset_jtag*/);
> > +
> > + /* Free all dynamically allocated arrays */
> > + if ((attrs != NULL) && (vars != NULL)) {
> > + for (i = 0; i < (u32)sym_count; ++i) {
> > + if ((attrs[i] & 0x80) && (vars[i] != 0))
> > + kfree((void *)vars[i]);
>
> Just do:
>
> if (vars != NULL) {
> for (i = 0; i < (u32)sym_count; ++i)
> kfree(vars[i]);
> }
>
> > +
> > + }
> > + }
> > +
> > + if (vars != NULL)
> > + kfree(vars);
>
> It is safe to call kfree(NULL), so just do:
> kfree(vars);
>
> > +
> > + if (var_size != NULL)
> > + kfree(var_size);
> > +
> > + if (attrs != NULL)
> > + kfree(attrs);
> > +
> > + if (proc_attributes != NULL)
> > + kfree(proc_attributes);
>
> Same here.
>
> Hmm... checkpatch.pl should have warned you about this...
>
> > +
> > + return status;
> > +}
> > +
> > +static int jbi_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 = (int)(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 < (int)note_count) &&
> > + (status != 0); ++i) {
> > + key_ptr = (char *)&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 = (char *)&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 = (int)*offset;
> > +
> > + if ((i >= 0) && (i < (int) note_count)) {
> > + status = 0;
> > +
> > + if (key != NULL)
> > + strlcpy(key, (char *)&p[note_strings +
> > + get_unaligned_be32(
> > + &p[note_table + (8 * i)])],
> > + length);
> > +
> > + if (value != NULL)
> > + strlcpy(value, (char *)&p[note_strings +
> > + get_unaligned_be32(
> > + &p[note_table + (8 * i) + 4])],
> > + length);
> > +
> > + *offset = i + 1;
> > + }
> > + }
> > +
> > + return status;
> > +}
> > +
> > +static int jbi_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 = (int)(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 >= (u32)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 ": CRC matched: 0000\n", __func__,
> > + local_actual);
> > + break;
> > + case -EILSEQ:
> > + printk(KERN_ERR ": CRC mismatch: expected 0000, "
> > + "actual 0000\n", __func__, local_expected,
> > + local_actual);
> > + break;
> > + case -ENODATA:
> > + printk(KERN_ERR ": expected CRC not found, "
> > + "actual CRC = 0000\n", __func__,
> > + local_actual);
> > + break;
> > + case -EIO:
> > + printk(KERN_ERR ": error: format isn't "
> > + "recognized.\n", __func__);
> > + break;
> > + default:
> > + printk(KERN_ERR ": CRC function returned error "
> > + "code 0\n", __func__, status);
> > + break;
> > + }
> > + }
> > +
> > + return status;
> > +}
> > +
> > +static int jbi_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 = (int)(first_word & 1L);
> > + *format_version = version + 1;
> > +
> > + if (version > 0) {
> > + *action_count = (int)get_unaligned_be32(&p[48]);
> > + *procedure_count = (int)get_unaligned_be32(&p[52]);
> > + }
> > + }
> > +
> > + return status;
> > +}
> > +
> > +static int jbi_get_action_info(u8 *p,
> > + s32 program_size,
> > + int index,
> > + char **name,
> > + char **description,
> > + struct jbi_procinfo **proc_list)
> > +{
> > + int status = -EIO;
> > + struct jbi_procinfo *procptr = NULL;
> > + struct jbi_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 >= (int)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 = (char *)&p[str_table + act_name_id];
> > +
> > + if (act_desc_id < (note_strings - str_table))
> > + *description = (char *)&p[str_table + act_desc_id];
> > +
> > + do {
> > + act_proc_name = get_unaligned_be32(
> > + &p[proc_table + (13 * act_proc_id)]);
> > + act_proc_attribute = (u8)
> > + (p[proc_table + (13 * act_proc_id) + 8] & 0x03);
> > +
> > + procptr = (struct jbi_procinfo *)
> > + kmalloc(sizeof(struct jbi_procinfo),
> > + GFP_KERNEL);
> > +
> > + if (procptr == NULL)
> > + status = -ENOMEM;
> > + else {
> > + procptr->name = (char *)
> > + &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)
> > +{
> > + static struct altera_config *astate;
> > + static u8 key[33] = {0};
> > + static u8 value[257] = {0};
> > + char *action_name = NULL;
> > + char *description = NULL;
> > + char *exit_string = NULL;
> > + struct jbi_procinfo *proc_list = NULL;
> > + struct jbi_procinfo *procptr = 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;
> > +
> > + astate = kzalloc(sizeof(struct altera_config), GFP_KERNEL);
> > + if (!astate)
> > + return -ENOMEM;
> > +
> > + memcpy(astate, config, sizeof(struct altera_config));
> > + if (!astate->jtag_io) {
> > + dprintk(KERN_INFO ": using byteblaster!\n", __func__);
> > + astate->jtag_io = netup_jtag_io_lpt;
> > + }
> > +
> > + jbi_check_crc((u8 *)fw->data, fw->size);
> > +
> > + if (debug) {
> > + jbi_get_file_info((u8 *)fw->data, fw->size, &format_version,
> > + &action_count, &procedure_count);
> > + printk(KERN_INFO ": File format is ByteCode format\n",
> > + __func__, (format_version == 2) ? "Jam STAPL" :
> > + "pre-standardized Jam 1.1");
> > + while (jbi_get_note((u8 *)fw->data, fw->size,
> > + &offset, key, value, 256) == 0)
> > + printk(KERN_INFO ": NOTE \"\" = \"\"\n",
> > + __func__, key, value);
> > + }
> > +
> > + if (debug && (format_version == 2) && (action_count > 0)) {
> > + printk(KERN_INFO ": Actions available:\n", __func__);
> > + for (index = 0; index < action_count; ++index) {
> > + jbi_get_action_info((u8 *)fw->data, fw->size,
> > + index, &action_name,
> > + &description,
> > + &proc_list);
> > +
> > + if (description == NULL)
> > + printk(KERN_INFO ": \n",
> > + __func__,
> > + action_name);
> > + else
> > + printk(KERN_INFO ": \"\"\n",
> > + __func__,
> > + action_name,
> > + description);
> > +
> > + procptr = proc_list;
> > + while (procptr != NULL) {
> > + if (procptr->attrs != 0)
> > + printk(KERN_INFO ": ()\n",
> > + __func__,
> > + procptr->name,
> > + (procptr->attrs == 1) ?
> > + "optional" : "recommended");
> > +
> > + proc_list = procptr->next;
> > + kfree(procptr);
> > + procptr = proc_list;
> > + }
> > + }
> > +
> > + printk(KERN_INFO "\n");
> > + }
> > +
> > + exec_result = jbi_execute(astate, (u8 *)fw->data, fw->size,
> > + &error_address, &exit_code, &format_version);
> > +
> > + if (exec_result == 0) {
> > + if (format_version == 2) {
> > + switch (exit_code) {
> > + case 0:
> > + exit_string = "Success";
> > + break;
> > + case 1:
> > + exit_string = "Checking chain failure";
> > + break;
>
> Huh? Haven't you replace the errors code already by standard Unix errors?
> You don't need this error translation logic. Instead, just return the
> error code to the caller.
It's not related to Unix errors.
Firmware like program itself sets value for exit_code, and I do not control firmware for that
matter.
To simlify code I can drop it, naturally.
exec_result is related and controlled by.
>
> > + case 2:
> > + exit_string = "Reading IDCODE failure";
> > + break;
> > + case 3:
> > + exit_string = "Reading USERCODE failure";
> > + break;
> > + case 4:
> > + exit_string = "Reading UESCODE failure";
> > + break;
> > + case 5:
> > + exit_string = "Entering ISP failure";
> > + break;
> > + case 6:
> > + exit_string = "Unrecognized device";
> > + break;
> > + case 7:
> > + exit_string = "Device revision is "
> > + "not supported";
> > + break;
> > + case 8:
> > + exit_string = "Erase failure";
> > + break;
> > + case 9:
> > + exit_string = "Device is not blank";
> > + break;
> > + case 10:
> > + exit_string = "Device programming failure";
> > + break;
> > + case 11:
> > + exit_string = "Device verify failure";
> > + break;
> > + case 12:
> > + exit_string = "Read failure";
> > + break;
> > + case 13:
> > + exit_string = "Calculating checksum failure";
> > + break;
> > + case 14:
> > + exit_string = "Setting security bit failure";
> > + break;
> > + case 15:
> > + exit_string = "Querying security bit failure";
> > + break;
> > + case 16:
> > + exit_string = "Exiting ISP failure";
> > + break;
> > + case 17:
> > + exit_string = "Performing system test failure";
> > + break;
> > + default:
> > + exit_string = "Unknown exit code";
> > + break;
> > + }
> > + } else {
> > + switch (exit_code) {
> > + case 0:
> > + exit_string = "Success";
> > + break;
> > + case 1:
> > + exit_string = "Illegal initialization values";
> > + break;
> > + case 2:
> > + exit_string = "Unrecognized device";
> > + break;
> > + case 3:
> > + exit_string = "Device revision is "
> > + "not supported";
> > + break;
> > + case 4:
> > + exit_string = "Device programming failure";
> > + break;
> > + case 5:
> > + exit_string = "Device is not blank";
> > + break;
> > + case 6:
> > + exit_string = "Device verify failure";
> > + break;
> > + case 7:
> > + exit_string = "SRAM configuration failure";
> > + break;
> > + default:
> > + exit_string = "Unknown exit code";
> > + break;
> > + }
> > + }
> > +
> > + printk(KERN_INFO ": exit code = 0... \n", __func__,
> > + exit_code, exit_string);
> > + } else if ((format_version == 2) &&
> > + (exec_result == -EINVAL)) {
> > + if ((astate->action == NULL) || (*astate->action == '\0'))
> > + printk(KERN_ERR ": error: no action specified for "
> > + "Jam STAPL file.\nprogram terminated.\n",
> > + __func__);
> > + else
> > + printk(KERN_ERR ": error: action \"\""
> > + " is not supported "
> > + "for this Jam STAPL file.\n"
> > + "Program terminated.\n", __func__,
> > + astate->action);
> > +
> > + } else
> > + printk(KERN_ERR ": error 0\n", __func__, exec_result);
> > +
> > + if (astate != NULL) {
> > + kfree(astate);
> > + astate = NULL;
> > + }
> > +
> > + return 0;
> > +}
> > +EXPORT_SYMBOL(altera_init);
> > diff --git a/drivers/misc/stapl-altera/jbicomp.c
> > b/drivers/misc/stapl-altera/jbicomp.c new file mode 100644
> > index 0000000..5e09ec7
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/jbicomp.c
> > @@ -0,0 +1,163 @@
> > +/*
> > + * jbicomp.c
> > + *
> > + * altera FPGA driver
> > + *
> > + * Copyright (C) Altera Corporation 1998-2001
> > + * Copyright (C) 2010 NetUP Inc.
> > + * Copyright (C) 2010 Igor M. Liplianin <liplianin@...up.ru>
> > + *
> > + * 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 "jbiexprt.h"
> > +
> > +#define SHORT_BITS 16
> > +#define CHAR_BITS 8
> > +#define DATA_BLOB_LENGTH 3
> > +#define MATCH_DATA_LENGTH 8192
> > +#define JBI_ACA_REQUEST_SIZE 1024
> > +#define JBI_ACA_BUFFER_SIZE (MATCH_DATA_LENGTH + JBI_ACA_REQUEST_SIZE)
> > +
> > +u32 jbi_in_length = 0L;
> > +u32 jbi_in_index = 0L; /* byte index into compressed array */
> > +u32 jbi_bits_avail = CHAR_BITS;
>
> Hmm... global vars? This doesn't seem right... what happens if you have two
> devices simultaneously using those vars? The better is to encapsulete them
> into some per-device struct.
>
> Also, global vars should generally use EXPORT_SYMBOL_GPL().
>
> > +
> > +/*
> > +The following functions implement incremental decompression of Boolean
> > +array data, using a small memory window.
> > +This algorithm works by searching previous bytes in the data that match
> > +the current data. If a match is found, then the offset and length of
> > +the matching data can replace the actual data in the output.
> > +Memory usage is reduced by maintaining a "window" buffer which contains/
> > +the uncompressed data for one 8K page, plus some extra amount specified/
> > +by JBI_ACA_REQUEST_SIZE. The function jbi_uncompress_page() is used to/
> > +request a subrange of the uncompressed data, starting at a particular
> > +bit position and extending a maximum of JBI_ACA_REQUEST_SIZE bytes. */
> > +
> > +static u32 jbi_bits_required(u32 n)
> > +/*
> > +Calculate the minimum number of bits required to represent n.
> > +Returns number of bits. */
> > +{
> > + 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;
> > +}
>
> Hmm... I think there are some functions for this already.
>
> > +
> > +static u32 jbi_read_packed(u8 *buffer, u32 bits)
> > +/*
> > +Read the next value from the input array "buffer"
> > +Read only "bits" bits from the array. The amount of
> > +bits that have already been read from "buffer" is
> > +stored internally to this function.
> > +Returns up to 16 bit value or -1 if buffer overrun. */
> > +{
> > + u32 result = 0;
> > + u32 shift = 0;
> > + u32 databyte = 0;
> > +
> > + while (bits > 0) {
> > + databyte = buffer[jbi_in_index];
> > + result |= (((databyte >> (CHAR_BITS - jbi_bits_avail))
> > + & (0xff >> (CHAR_BITS - jbi_bits_avail))) << shift);
> > +
> > + if (bits <= jbi_bits_avail) {
> > + result &= (0xffff >> (SHORT_BITS - (bits + shift)));
> > + jbi_bits_avail -= bits;
> > + bits = 0;
> > + } else {
> > + ++jbi_in_index;
> > + shift += jbi_bits_avail;
> > + bits -= jbi_bits_avail;
> > + jbi_bits_avail = CHAR_BITS;
> > + }
> > + }
> > +
> > + return result;
> > +}
> > +
> > +u32 jbi_uncompress(u8 *in, u32 in_length, u8 *out, u32 out_length, s32
> > version) +/*
> > +Uncompress data in "in" and write result to "out".
> > +Returns length of uncompressed data or -1 if:
> > + 1) out_length is too small
> > + 2) Internal error in the code
> > + 3) in doesn't contain ACA compressed data. */
> > +{
> > + u32 i, j, data_length = 0L;
> > + u32 offset, length;
> > + u32 match_data_length = MATCH_DATA_LENGTH;
> > +
> > + if (version > 0)
> > + --match_data_length;
> > +
> > + jbi_in_length = in_length;
> > + jbi_bits_avail = CHAR_BITS;
> > + jbi_in_index = 0L;
> > + 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 | ((u32)
> > + jbi_read_packed(in, CHAR_BITS) << (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 (jbi_read_packed(in, 1) == 0) {
> > + for (j = 0; j < DATA_BLOB_LENGTH; ++j) {
> > + if (i < data_length) {
> > + out[i] = (u8)jbi_read_packed(in,
> > + CHAR_BITS);
> > + i++;
> > + }
> > + }
> > + } else {
> > + /* A 1 bit indicates offset/length to follow. */
> > + offset = jbi_read_packed(in, jbi_bits_required((s16)
> > + (i > match_data_length ?
> > + match_data_length : i)));
> > + length = jbi_read_packed(in, CHAR_BITS);
> > + for (j = 0; j < length; ++j) {
> > + if (i < data_length) {
> > + out[i] = out[i - offset];
> > + i++;
> > + }
> > + }
> > + }
> > + }
> > +
> > + return data_length;
> > +}
> > diff --git a/drivers/misc/stapl-altera/jbiexprt.h
> > b/drivers/misc/stapl-altera/jbiexprt.h new file mode 100644
> > index 0000000..c71fd75
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/jbiexprt.h
> > @@ -0,0 +1,32 @@
> > +/*
> > + * jbiexprt.h
> > + *
> > + * altera FPGA driver
> > + *
> > + * Copyright (C) Altera Corporation 1998-2001
> > + * Copyright (C) 2010 NetUP Inc.
> > + * Copyright (C) 2010 Igor M. Liplianin <liplianin@...up.ru>
> > + *
> > + * 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 INC_JBIEXPRT_H
> > +#define INC_JBIEXPRT_H
> > +
> > +u32 jbi_uncompress(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 /* INC_JBIEXPRT_H */
> > diff --git a/drivers/misc/stapl-altera/jbijtag.c
> > b/drivers/misc/stapl-altera/jbijtag.c new file mode 100644
> > index 0000000..a2cf842
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/jbijtag.c
> > @@ -0,0 +1,1038 @@
> > +/*
> > + * jbijtag.c
> > + *
> > + * altera FPGA driver
> > + *
> > + * Copyright (C) Altera Corporation 1998-2001
> > + * Copyright (C) 2010 NetUP Inc.
> > + * Copyright (C) 2010 Igor M. Liplianin <liplianin@...up.ru>
> > + *
> > + * 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 "jbiexprt.h"
> > +#include "jbijtag.h"
> > +
> > +/* maximum JTAG IR and DR lengths (in bits) */
> > +#define JBIC_MAX_JTAG_IR_PREAMBLE 256
> > +#define JBIC_MAX_JTAG_IR_POSTAMBLE 256
> > +#define JBIC_MAX_JTAG_IR_LENGTH 512
> > +#define JBIC_MAX_JTAG_DR_PREAMBLE 1024
> > +#define JBIC_MAX_JTAG_DR_POSTAMBLE 1024
> > +#define JBIC_MAX_JTAG_DR_LENGTH 2048
> > +
> > +#define jbi_jtag_io(a, b, c)\
> > + astate->jtag_io(astate->dev, a, b, c);
> > +
> > +#define jbi_malloc(a) kzalloc(a, GFP_KERNEL);
> > +
> > +/* Global variable to store the current JTAG state */
> > +enum JBIE_JTAG_STATE jbi_jtag_state = JBI_ILLEGAL_JTAG_STATE;
> > +
> > +/* Store current stop-state for DR and IR scan commands */
> > +enum JBIE_JTAG_STATE jbi_drstop_state = IDLE;
> > +enum JBIE_JTAG_STATE jbi_irstop_state = IDLE;
> > +
> > +/* Store current padding values */
> > +u32 jbi_dr_preamble;
> > +u32 jbi_dr_postamble;
> > +u32 jbi_ir_preamble;
> > +u32 jbi_ir_postamble;
> > +u32 jbi_dr_length;
> > +u32 jbi_ir_length;
> > +u8 *jbi_dr_preamble_data;
> > +u8 *jbi_dr_postamble_data;
> > +u8 *jbi_ir_preamble_data;
> > +u8 *jbi_ir_postamble_data;
> > +u8 *jbi_dr_buffer;
> > +u8 *jbi_ir_buffer;
>
> The better is to encapsulate all those global vars into an struct, like
> altera_config, otherwise you'll have serious problems if more than one
> device is connected.
>
> Do they need to be global?
>
> > +
> > +/*
> > +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 JBIS_JTAG_MACHINE {
> > + enum JBIE_JTAG_STATE tms_high;
> > + enum JBIE_JTAG_STATE tms_low;
> > +} jbi_jtag_state_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
> > +jbi_jtag_state_transitions[] table.
> > +*/
> > +u16 jbi_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
> > +};
>
> Are those global vars const? If so, declare as const.
>
> If they are local, declare as "static".
>
> > +
> > +/* Flag bits for jbi_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 jbi_init_jtag()
> > +{
> > + /* initial JTAG state is unknown */
> > + jbi_jtag_state = JBI_ILLEGAL_JTAG_STATE;
> > +
> > + /* initialize global variables to default state */
> > + jbi_drstop_state = IDLE;
> > + jbi_irstop_state = IDLE;
> > + jbi_dr_preamble = 0;
> > + jbi_dr_postamble = 0;
> > + jbi_ir_preamble = 0;
> > + jbi_ir_postamble = 0;
> > + jbi_dr_length = 0;
> > + jbi_ir_length = 0;
> > +
> > + jbi_dr_preamble_data = NULL;
> > + jbi_dr_postamble_data = NULL;
> > + jbi_ir_preamble_data = NULL;
> > + jbi_ir_postamble_data = NULL;
> > + jbi_dr_buffer = NULL;
> > + jbi_ir_buffer = NULL;
> > +
> > + return 0;
> > +}
> > +
> > +int jbi_set_drstop_state(enum JBIE_JTAG_STATE state)
> > +{
> > + jbi_drstop_state = state;
> > +
> > + return 0;
> > +}
> > +
> > +int jbi_set_irstop_state(enum JBIE_JTAG_STATE state)
> > +{
> > + jbi_irstop_state = state;
> > +
> > + return 0;
> > +}
> > +
> > +int jbi_set_dr_preamble(u32 count, u32 start_index,
> > + u8 *preamble_data)
> > +{
> > + int status = 0;
> > + u32 i;
> > + u32 j;
> > +
> > + if (count > jbi_dr_preamble) {
> > + kfree(jbi_dr_preamble_data);
> > + jbi_dr_preamble_data = (u8 *)jbi_malloc((count + 7) >> 3);
> > + if (jbi_dr_preamble_data == NULL)
> > + status = -ENOMEM;
> > + else
> > + jbi_dr_preamble = count;
> > + } else
> > + jbi_dr_preamble = count;
> > +
> > + if (status == 0) {
> > + for (i = 0; i < count; ++i) {
> > + j = i + start_index;
> > +
> > + if (preamble_data == NULL)
> > + jbi_dr_preamble_data[i >> 3] |= (1 << (i & 7));
> > + else {
> > + if (preamble_data[j >> 3] & (1 << (j & 7)))
> > + jbi_dr_preamble_data[i >> 3] |=
> > + (1 << (i & 7));
> > + else
> > + jbi_dr_preamble_data[i >> 3] &=
> > + ~(u32)(1 << (i & 7));
> > +
> > + }
> > + }
> > + }
> > +
> > + return status;
> > +}
> > +
> > +int jbi_set_ir_preamble(u32 count, u32 start_index,
> > + u8 *preamble_data)
> > +{
> > + int status = 0;
> > + u32 i;
> > + u32 j;
> > +
> > + if (count > jbi_ir_preamble) {
> > + kfree(jbi_ir_preamble_data);
> > + jbi_ir_preamble_data = (u8 *)jbi_malloc((count + 7) >> 3);
> > + if (jbi_ir_preamble_data == NULL)
> > + status = -ENOMEM;
> > + else
> > + jbi_ir_preamble = count;
> > +
> > + } else
> > + jbi_ir_preamble = count;
> > +
> > + if (status == 0) {
> > + for (i = 0; i < count; ++i) {
> > + j = i + start_index;
> > + if (preamble_data == NULL)
> > + jbi_ir_preamble_data[i >> 3] |= (1 << (i & 7));
> > + else {
> > + if (preamble_data[j >> 3] & (1 << (j & 7)))
> > + jbi_ir_preamble_data[i >> 3] |=
> > + (1 << (i & 7));
> > + else
> > + jbi_ir_preamble_data[i >> 3] &=
> > + ~(u32)(1 << (i & 7));
> > +
> > + }
> > + }
> > + }
> > +
> > + return status;
> > +}
> > +
> > +int jbi_set_dr_postamble(u32 count, u32 start_index,
> > + u8 *postamble_data)
> > +{
> > + int status = 0;
> > + u32 i;
> > + u32 j;
> > +
> > + if (count > jbi_dr_postamble) {
> > + kfree(jbi_dr_postamble_data);
> > + jbi_dr_postamble_data = (u8 *)jbi_malloc((count + 7) >> 3);
> > +
> > + if (jbi_dr_postamble_data == NULL)
> > + status = -ENOMEM;
> > + else
> > + jbi_dr_postamble = count;
> > +
> > + } else
> > + jbi_dr_postamble = count;
> > +
> > + if (status == 0) {
> > + for (i = 0; i < count; ++i) {
> > + j = i + start_index;
> > +
> > + if (postamble_data == NULL)
> > + jbi_dr_postamble_data[i >> 3] |= (1 << (i & 7));
> > + else {
> > + if (postamble_data[j >> 3] & (1 << (j & 7)))
> > + jbi_dr_postamble_data[i >> 3] |=
> > + (1 << (i & 7));
> > + else
> > + jbi_dr_postamble_data[i >> 3] &=
> > + ~(u32)(1 << (i & 7));
> > +
> > + }
> > + }
> > + }
> > +
> > + return status;
> > +}
> > +
> > +int jbi_set_ir_postamble(u32 count, u32 start_index,
> > + u8 *postamble_data)
> > +{
> > + int status = 0;
> > + u32 i;
> > + u32 j;
> > +
> > + if (count > jbi_ir_postamble) {
> > + kfree(jbi_ir_postamble_data);
> > + jbi_ir_postamble_data = (u8 *)jbi_malloc((count + 7) >> 3);
> > + if (jbi_ir_postamble_data == NULL)
> > + status = -ENOMEM;
> > + else
> > + jbi_ir_postamble = count;
> > +
> > + } else
> > + jbi_ir_postamble = count;
> > +
> > + if (status != 0)
> > + return status;
> > +
> > + for (i = 0; i < count; ++i) {
> > + j = i + start_index;
> > +
> > + if (postamble_data == NULL)
> > + jbi_ir_postamble_data[i >> 3] |= (1 << (i & 7));
> > + else {
> > + if (postamble_data[j >> 3] & (1 << (j & 7)))
> > + jbi_ir_postamble_data[i >> 3] |= (1 << (i & 7));
> > + else
> > + jbi_ir_postamble_data[i >> 3] &=
> > + ~(u32)(1 << (i & 7));
> > +
> > + }
> > + }
> > +
> > + return status;
> > +}
> > +
> > +static void jbi_jtag_reset_idle(struct altera_config *astate)
> > +{
> > + int i;
> > + /* Go to Test Logic Reset (no matter what the starting state may be) */
> > + for (i = 0; i < 5; ++i)
> > + jbi_jtag_io(TMS_HIGH, TDI_LOW, IGNORE_TDO);
> > +
> > + /* Now step to Run Test / Idle */
> > + jbi_jtag_io(TMS_LOW, TDI_LOW, IGNORE_TDO);
> > + jbi_jtag_state = IDLE;
> > +}
> > +
> > +int jbi_goto_jtag_state(struct altera_config *astate,
> > + enum JBIE_JTAG_STATE state)
> > +{
> > + int tms;
> > + int count = 0;
> > + int status = 0;
> > +
> > + if (jbi_jtag_state == JBI_ILLEGAL_JTAG_STATE)
> > + /* initialize JTAG chain to known state */
> > + jbi_jtag_reset_idle(astate);
> > +
> > + if (jbi_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)) {
> > + jbi_jtag_io(TMS_LOW, TDI_LOW, IGNORE_TDO);
> > + } else if (state == RESET)
> > + jbi_jtag_io(TMS_HIGH, TDI_LOW, IGNORE_TDO);
> > +
> > + } else {
> > + while ((jbi_jtag_state != state) && (count < 9)) {
> > + /* Get TMS value to take a step toward desired state */
> > + tms = (jbi_jtag_path_map[jbi_jtag_state] & (1 << state))
> > + ? TMS_HIGH : TMS_LOW;
> > +
> > + /* Take a step */
> > + jbi_jtag_io(tms, TDI_LOW, IGNORE_TDO);
> > +
> > + if (tms)
> > + jbi_jtag_state =
> > + jbi_jtag_state_transitions[jbi_jtag_state].tms_high;
> > + else
> > + jbi_jtag_state =
> > + jbi_jtag_state_transitions[jbi_jtag_state].tms_low;
> > +
> > + ++count;
> > + }
> > + }
> > +
> > + if (jbi_jtag_state != state)
> > + status = -EREMOTEIO;
> > +
> > + return status;
> > +}
> > +
> > +int jbi_do_wait_cycles(struct altera_config *astate,
> > + s32 cycles,
> > + enum JBIE_JTAG_STATE wait_state)
> > +{
> > + int tms;
> > + s32 count;
> > + int status = 0;
> > +
> > + if (jbi_jtag_state != wait_state)
> > + status = jbi_goto_jtag_state(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++)
> > + jbi_jtag_io(tms, TDI_LOW, IGNORE_TDO);
> > +
> > + }
> > +
> > + return status;
> > +}
> > +
> > +int jbi_do_wait_microseconds(struct altera_config *astate,
> > + s32 microseconds, enum JBIE_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. */
> > +{
> > + int status = 0;
> > +
> > + if ((jbi_jtag_state != JBI_ILLEGAL_JTAG_STATE) &&
> > + (jbi_jtag_state != wait_state))
> > + status = jbi_goto_jtag_state(astate, wait_state);
> > +
> > + if (status == 0)
> > + /* Wait for specified time interval */
> > + udelay(microseconds);
> > +
> > + return status;
> > +}
> > +
> > +static void jbi_jtag_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 jbi_jtag_drscan(struct altera_config *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 */
> > + jbi_jtag_io(1, 0, 0); /* DRSELECT */
> > + jbi_jtag_io(0, 0, 0); /* DRCAPTURE */
> > + jbi_jtag_io(0, 0, 0); /* DRSHIFT */
> > + break;
> > +
> > + case 1: /* DRPAUSE */
> > + jbi_jtag_io(1, 0, 0); /* DREXIT2 */
> > + jbi_jtag_io(1, 0, 0); /* DRUPDATE */
> > + jbi_jtag_io(1, 0, 0); /* DRSELECT */
> > + jbi_jtag_io(0, 0, 0); /* DRCAPTURE */
> > + jbi_jtag_io(0, 0, 0); /* DRSHIFT */
> > + break;
> > +
> > + case 2: /* IRPAUSE */
> > + jbi_jtag_io(1, 0, 0); /* IREXIT2 */
> > + jbi_jtag_io(1, 0, 0); /* IRUPDATE */
> > + jbi_jtag_io(1, 0, 0); /* DRSELECT */
> > + jbi_jtag_io(0, 0, 0); /* DRCAPTURE */
> > + jbi_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 = jbi_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));
> > +
> > + }
> > + }
> > +
> > + jbi_jtag_io(0, 0, 0); /* DRPAUSE */
> > + }
> > +
> > + return status;
> > +}
> > +
> > +static int jbi_jtag_irscan(struct altera_config *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 */
> > + jbi_jtag_io(1, 0, 0); /* DRSELECT */
> > + jbi_jtag_io(1, 0, 0); /* IRSELECT */
> > + jbi_jtag_io(0, 0, 0); /* IRCAPTURE */
> > + jbi_jtag_io(0, 0, 0); /* IRSHIFT */
> > + break;
> > +
> > + case 1: /* DRPAUSE */
> > + jbi_jtag_io(1, 0, 0); /* DREXIT2 */
> > + jbi_jtag_io(1, 0, 0); /* DRUPDATE */
> > + jbi_jtag_io(1, 0, 0); /* DRSELECT */
> > + jbi_jtag_io(1, 0, 0); /* IRSELECT */
> > + jbi_jtag_io(0, 0, 0); /* IRCAPTURE */
> > + jbi_jtag_io(0, 0, 0); /* IRSHIFT */
> > + break;
> > +
> > + case 2: /* IRPAUSE */
> > + jbi_jtag_io(1, 0, 0); /* IREXIT2 */
> > + jbi_jtag_io(1, 0, 0); /* IRUPDATE */
> > + jbi_jtag_io(1, 0, 0); /* DRSELECT */
> > + jbi_jtag_io(1, 0, 0); /* IRSELECT */
> > + jbi_jtag_io(0, 0, 0); /* IRCAPTURE */
> > + jbi_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 = jbi_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));
> > +
> > + }
> > + }
> > +
> > + jbi_jtag_io(0, 0, 0); /* IRPAUSE */
> > + }
> > +
> > + return status;
> > +}
> > +
> > +static void jbi_jtag_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 jbi_do_irscan(struct altera_config *astate,
> > + u32 count,
> > + u8 *tdi_data,
> > + u32 start_index)
> > +/* Shifts data into instruction register */
> > +{
> > + int start_code = 0;
> > + u32 alloc_chars = 0;
> > + u32 shift_count = jbi_ir_preamble + count + jbi_ir_postamble;
> > + int status = 0;
> > + enum JBIE_JTAG_STATE start_state = JBI_ILLEGAL_JTAG_STATE;
> > +
> > + switch (jbi_jtag_state) {
> > + case JBI_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 (jbi_jtag_state != start_state)
> > + status = jbi_goto_jtag_state(astate, start_state);
> > +
> > + if (status == 0) {
> > + if (shift_count > jbi_ir_length) {
> > + alloc_chars = (shift_count + 7) >> 3;
> > + kfree(jbi_ir_buffer);
> > + jbi_ir_buffer = (u8 *)jbi_malloc(alloc_chars);
> > + if (jbi_ir_buffer == NULL)
> > + status = -ENOMEM;
> > + else
> > + jbi_ir_length = alloc_chars * 8;
> > +
> > + }
> > + }
> > +
> > + if (status == 0) {
> > + /* Copy preamble data, IR data,
> > + and postamble data into a buffer */
> > + jbi_jtag_concatenate_data(jbi_ir_buffer,
> > + jbi_ir_preamble_data,
> > + jbi_ir_preamble,
> > + tdi_data,
> > + start_index,
> > + count,
> > + jbi_ir_postamble_data,
> > + jbi_ir_postamble);
> > + /* Do the IRSCAN */
> > + jbi_jtag_irscan(astate,
> > + start_code,
> > + shift_count,
> > + jbi_ir_buffer,
> > + NULL);
> > +
> > + /* jbi_jtag_irscan() always ends in IRPAUSE state */
> > + jbi_jtag_state = IRPAUSE;
> > + }
> > +
> > + if (status == 0)
> > + if (jbi_irstop_state != IRPAUSE)
> > + status = jbi_goto_jtag_state(astate, jbi_irstop_state);
> > +
> > +
> > + return status;
> > +}
> > +
> > +int jbi_swap_ir(struct altera_config *astate,
> > + u32 count,
> > + u8 *in_data,
> > + u32 in_index,
> > + u8 *out_data,
> > + u32 out_index)
> > +/* Shifts data into instruction register, capturing output data */
> > +{
> > + int start_code = 0;
> > + u32 alloc_chars = 0;
> > + u32 shift_count = jbi_ir_preamble + count + jbi_ir_postamble;
> > + int status = 0;
> > + enum JBIE_JTAG_STATE start_state = JBI_ILLEGAL_JTAG_STATE;
> > +
> > + switch (jbi_jtag_state) {
> > + case JBI_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 (jbi_jtag_state != start_state)
> > + status = jbi_goto_jtag_state(astate, start_state);
> > +
> > + if (status == 0) {
> > + if (shift_count > jbi_ir_length) {
> > + alloc_chars = (shift_count + 7) >> 3;
> > + kfree(jbi_ir_buffer);
> > + jbi_ir_buffer = (u8 *)jbi_malloc(alloc_chars);
> > + if (jbi_ir_buffer == NULL)
> > + status = -ENOMEM;
> > + else
> > + jbi_ir_length = alloc_chars * 8;
> > +
> > + }
> > + }
> > +
> > + if (status == 0) {
> > + /*
> > + Copy preamble data, IR data,
> > + and postamble data into a buffer */
> > + jbi_jtag_concatenate_data(jbi_ir_buffer,
> > + jbi_ir_preamble_data,
> > + jbi_ir_preamble,
> > + in_data,
> > + in_index,
> > + count,
> > + jbi_ir_postamble_data,
> > + jbi_ir_postamble);
> > +
> > + /* Do the IRSCAN */
> > + jbi_jtag_irscan(astate,
> > + start_code,
> > + shift_count,
> > + jbi_ir_buffer,
> > + jbi_ir_buffer);
> > +
> > + /* jbi_jtag_irscan() always ends in IRPAUSE state */
> > + jbi_jtag_state = IRPAUSE;
> > + }
> > +
> > + if (status == 0)
> > + if (jbi_irstop_state != IRPAUSE)
> > + status = jbi_goto_jtag_state(astate, jbi_irstop_state);
> > +
> > +
> > + if (status == 0)
> > + /* Now extract the returned data from the buffer */
> > + jbi_jtag_extract_target_data(jbi_ir_buffer,
> > + out_data, out_index,
> > + jbi_ir_preamble, count);
> > +
> > + return status;
> > +}
> > +
> > +int jbi_do_drscan(struct altera_config *astate,
> > + u32 count,
> > + u8 *tdi_data,
> > + u32 start_index)
> > +/* Shifts data into data register (ignoring output data) */
> > +{
> > + int start_code = 0;
> > + u32 alloc_chars = 0;
> > + u32 shift_count = jbi_dr_preamble + count + jbi_dr_postamble;
> > + int status = 0;
> > + enum JBIE_JTAG_STATE start_state = JBI_ILLEGAL_JTAG_STATE;
> > +
> > + switch (jbi_jtag_state) {
> > + case JBI_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 (jbi_jtag_state != start_state)
> > + status = jbi_goto_jtag_state(astate, start_state);
> > +
> > + if (status == 0) {
> > + if (shift_count > jbi_dr_length) {
> > + alloc_chars = (shift_count + 7) >> 3;
> > + kfree(jbi_dr_buffer);
> > + jbi_dr_buffer = (u8 *)jbi_malloc(alloc_chars);
> > + if (jbi_dr_buffer == NULL)
> > + status = -ENOMEM;
> > + else
> > + jbi_dr_length = alloc_chars * 8;
> > +
> > + }
> > + }
> > +
> > + if (status == 0) {
> > + /*
> > + Copy preamble data, DR data,
> > + and postamble data into a buffer */
> > + jbi_jtag_concatenate_data(jbi_dr_buffer,
> > + jbi_dr_preamble_data,
> > + jbi_dr_preamble,
> > + tdi_data,
> > + start_index,
> > + count,
> > + jbi_dr_postamble_data,
> > + jbi_dr_postamble);
> > + /* Do the DRSCAN */
> > + jbi_jtag_drscan(astate, start_code, shift_count,
> > + jbi_dr_buffer, NULL);
> > + /* jbi_jtag_drscan() always ends in DRPAUSE state */
> > + jbi_jtag_state = DRPAUSE;
> > + }
> > +
> > + if (status == 0)
> > + if (jbi_drstop_state != DRPAUSE)
> > + status = jbi_goto_jtag_state(astate, jbi_drstop_state);
> > +
> > + return status;
> > +}
> > +
> > +int jbi_swap_dr(struct altera_config *astate, u32 count,
> > + u8 *in_data, u32 in_index,
> > + u8 *out_data, u32 out_index)
> > +/* Shifts data into data register, capturing output data */
> > +{
> > + int start_code = 0;
> > + u32 alloc_chars = 0;
> > + u32 shift_count = jbi_dr_preamble + count + jbi_dr_postamble;
> > + int status = 0;
> > + enum JBIE_JTAG_STATE start_state = JBI_ILLEGAL_JTAG_STATE;
> > +
> > + switch (jbi_jtag_state) {
> > + case JBI_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 (jbi_jtag_state != start_state)
> > + status = jbi_goto_jtag_state(astate, start_state);
> > +
> > + if (status == 0) {
> > + if (shift_count > jbi_dr_length) {
> > + alloc_chars = (shift_count + 7) >> 3;
> > + kfree(jbi_dr_buffer);
> > + jbi_dr_buffer = (u8 *)jbi_malloc(alloc_chars);
> > +
> > + if (jbi_dr_buffer == NULL)
> > + status = -ENOMEM;
> > + else
> > + jbi_dr_length = alloc_chars * 8;
> > +
> > + }
> > + }
> > +
> > + if (status == 0) {
> > + /* Copy preamble data, DR data,
> > + and postamble data into a buffer */
> > + jbi_jtag_concatenate_data(jbi_dr_buffer,
> > + jbi_dr_preamble_data,
> > + jbi_dr_preamble,
> > + in_data,
> > + in_index,
> > + count,
> > + jbi_dr_postamble_data,
> > + jbi_dr_postamble);
> > +
> > + /* Do the DRSCAN */
> > + jbi_jtag_drscan(astate,
> > + start_code,
> > + shift_count,
> > + jbi_dr_buffer,
> > + jbi_dr_buffer);
> > +
> > + /* jbi_jtag_drscan() always ends in DRPAUSE state */
> > + jbi_jtag_state = DRPAUSE;
> > + }
> > +
> > + if (status == 0)
> > + if (jbi_drstop_state != DRPAUSE)
> > + status = jbi_goto_jtag_state(astate, jbi_drstop_state);
> > +
> > + if (status == 0)
> > + /* Now extract the returned data from the buffer */
> > + jbi_jtag_extract_target_data(jbi_dr_buffer,
> > + out_data,
> > + out_index,
> > + jbi_dr_preamble,
> > + count);
> > +
> > + return status;
> > +}
> > +
> > +void jbi_free_jtag_padding_buffers(struct altera_config *astate/*,
> > + int reset_jtag*/)
> > +/* Frees memory allocated for JTAG IR and DR buffers */
> > +{
> > + /* If the JTAG interface was used, reset it to TLR */
> > + if (/*reset_jtag && (*/jbi_jtag_state != JBI_ILLEGAL_JTAG_STATE/*)*/)
> > + jbi_jtag_reset_idle(astate);
> > +
> > + if (jbi_dr_preamble_data != NULL) {
> > + kfree(jbi_dr_preamble_data);
> > + jbi_dr_preamble_data = NULL;
> > + }
> > +
> > + if (jbi_dr_postamble_data != NULL) {
> > + kfree(jbi_dr_postamble_data);
> > + jbi_dr_postamble_data = NULL;
> > + }
> > +
> > + if (jbi_dr_buffer != NULL) {
> > + kfree(jbi_dr_buffer);
> > + jbi_dr_buffer = NULL;
> > + }
> > +
> > + if (jbi_ir_preamble_data != NULL) {
> > + kfree(jbi_ir_preamble_data);
> > + jbi_ir_preamble_data = NULL;
> > + }
> > +
> > + if (jbi_ir_postamble_data != NULL) {
> > + kfree(jbi_ir_postamble_data);
> > + jbi_ir_postamble_data = NULL;
> > + }
> > +
> > + if (jbi_ir_buffer != NULL) {
> > + kfree(jbi_ir_buffer);
> > + jbi_ir_buffer = NULL;
> > + }
>
> Just do
> kfree(var);
> var = NULL;
>
> > +}
> > diff --git a/drivers/misc/stapl-altera/jbijtag.h
> > b/drivers/misc/stapl-altera/jbijtag.h new file mode 100644
> > index 0000000..61fd123
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/jbijtag.h
> > @@ -0,0 +1,83 @@
> > +/*
> > + * jbijtag.h
> > + *
> > + * altera FPGA driver
> > + *
> > + * Copyright (C) Altera Corporation 1998-2001
> > + * Copyright (C) 2010 NetUP Inc.
> > + * Copyright (C) 2010 Igor M. Liplianin <liplianin@...up.ru>
> > + *
> > + * 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 INC_JBIJTAG_H
> > +#define INC_JBIJTAG_H
> > +
> > +/* Function Prototypes */
> > +enum JBIE_JTAG_STATE {
> > + JBI_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
> > +
> > +};
> > +
> > +
> > +int jbi_init_jtag(void);
> > +int jbi_set_drstop_state(enum JBIE_JTAG_STATE state);
> > +int jbi_set_irstop_state(enum JBIE_JTAG_STATE state);
> > +int jbi_set_dr_preamble(u32 count, u32 start_index,
> > + u8 *preamble_data);
> > +int jbi_set_ir_preamble(u32 count, u32 start_index,
> > + u8 *preamble_data);
> > +int jbi_set_dr_postamble(u32 count, u32 start_index,
> > + u8 *postamble_data);
> > +int jbi_set_ir_postamble(u32 count, u32 start_index,
> > + u8 *postamble_data);
> > +int jbi_goto_jtag_state(struct altera_config *astate,
> > + enum JBIE_JTAG_STATE state);
> > +int jbi_do_wait_cycles(struct altera_config *astate,
> > + s32 cycles, enum JBIE_JTAG_STATE wait_state);
> > +int jbi_do_wait_microseconds(struct altera_config *astate,
> > + s32 microseconds,
> > + enum JBIE_JTAG_STATE wait_state);
> > +int jbi_do_irscan(struct altera_config *astate, u32 count,
> > + u8 *tdi_data, u32 start_index);
> > +int jbi_swap_ir(struct altera_config *astate,
> > + u32 count, u8 *in_data,
> > + u32 in_index, u8 *out_data,
> > + u32 out_index);
> > +int jbi_do_drscan(struct altera_config *astate, u32 count,
> > + u8 *tdi_data, u32 start_index);
> > +int jbi_swap_dr(struct altera_config *astate, u32 count,
> > + u8 *in_data, u32 in_index,
> > + u8 *out_data, u32 out_index);
> > +void jbi_free_jtag_padding_buffers(struct altera_config *astate/*,
> > + int reset_jtag*/);
> > +#endif /* INC_JBIJTAG_H */
> > diff --git a/drivers/misc/stapl-altera/jbistub.c
> > b/drivers/misc/stapl-altera/jbistub.c new file mode 100644
> > index 0000000..9194afe
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/jbistub.c
> > @@ -0,0 +1,70 @@
> > +/*
> > + * jbistub.c
> > + *
> > + * altera FPGA driver
> > + *
> > + * Copyright (C) Altera Corporation 1998-2001
> > + * Copyright (C) 2010 NetUP Inc.
> > + * Copyright (C) 2010 Abylay Ospan <aospan@...up.ru>
> > + *
> > + * 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 "jbiexprt.h"
> > +
> > +int jtag_hardware_initialized;
> > +
> > +static void write_byteblaster(int port, int data)
> > +{
> > + outb((u8)data, (u16)(port + 0x378));
> > +};
> > +
> > +static int read_byteblaster(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 (!jtag_hardware_initialized) {
> > + initial_lpt_ctrl = read_byteblaster(2);
> > + write_byteblaster(2, (initial_lpt_ctrl | 0x02) & 0xdf);
> > + jtag_hardware_initialized = 1;
> > + }
> > +
> > + data = ((tdi ? 0x40 : 0) | (tms ? 0x02 : 0));
> > +
> > + write_byteblaster(0, data);
> > +
> > + if (read_tdo) {
> > + tdo = read_byteblaster(1);
> > + tdo = ((tdo & 0x80) ? 0 : 1);
> > + }
> > +
> > + write_byteblaster(0, data | 0x01);
> > +
> > + write_byteblaster(0, data);
> > +
> > + return tdo;
> > +}
> > diff --git a/include/misc/altera.h b/include/misc/altera.h
> > new file mode 100644
> > index 0000000..bf6d878
> > --- /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@...up.ru>
> > + *
> > + * 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_STAPL_ALTERA) || \
> > + (defined(CONFIG_STAPL_ALTERA_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 ": driver disabled by Kconfig\n", __func__);
> > + return 0;
> > +}
> > +#endif /* CONFIG_STAPL_ALTERA */
> > +
> > +#endif /* __ALTERA_H */
>
> PS.: I noticed that you've declare a large number of symbols as global. You
> need to be sure that those names won't conflict with other symbols in
> Linux, otherwise, kernel won't compile with allyesconfig. What we
> generally do for driver symbols is to start all of them with the driver
> name.
>
> So, for example, a better name for jbi_init_jtag() would be
> altera_jbi_init_jtag().
>
> Btw, checkpatch got two warnings:
>
> WARNING: unnecessary cast may hide bugs, see
> http://c-faq.com/malloc/mallocnocast.html #407: FILE:
> drivers/misc/stapl-altera/altera.c:322:
> + attrs = (char *)kmalloc((u32)sym_count, GFP_KERNEL);
>
> WARNING: unnecessary cast may hide bugs, see
> http://c-faq.com/malloc/mallocnocast.html #414: FILE:
> drivers/misc/stapl-altera/altera.c:329:
> + proc_attributes = (u8 *)kmalloc((u32)proc_count, GFP_KERNEL);
>
> Please, use typecasts only when it is _really_ needed.
>
> Cheers,
> Mauro
--
Igor M. Liplianin
Microsoft Windows Free Zone - Linux used for all Computing Tasks
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