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Message-Id: <201010161108.00083.liplianin@me.by>
Date: Sat, 16 Oct 2010 11:07:59 +0300
From: "Igor M. Liplianin" <liplianin@...by>
To: Mauro Carvalho Chehab <mchehab@...hat.com>
Cc: linux-media@...r.kernel.org,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
Abylai Ospan <aospan@...up.ru>
Subject: Re: [GIT PATCHES FOR 2.6.37] Support for NetUP Dual DVB-T/C CI RF card
В сообщении от 14 октября 2010 21:59:07 автор Mauro Carvalho Chehab написал:
> Em 14-10-2010 15:11, Mauro Carvalho Chehab escreveu:
> > Em 03-10-2010 19:35, 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
> >>
> >> 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 c8dd732fd119ce6d562d5fa82a10bbe75a376575:
> >> V4L/DVB: gspca - sonixj: Have 0c45:6130 handled by sonixj instead of
> >> sn9c102 (2010-10-01
> >>
> >> 18:14:35 -0300)
> >>
> >> are available in the git repository at:
> >> http://udev.netup.ru/git/v4l-dvb.git netup-for-media-tree
> >>
> >> 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 | 2739 ++++++++++++++++++++
> >> drivers/misc/stapl-altera/jbicomp.c | 163 ++
> >> drivers/misc/stapl-altera/jbiexprt.h | 94 +
> >> 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, 12872 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
> >
> > Igor,
> >
> > I did a quick look at Altera FPGA driver, and at the cx23885 changes for
> > it to work with this device, I think the FPGA driver deserves some
> > discussion at linux-kernel.
> >
> > As there's a V4L/DVB device that depends on it, it is clear to me that
> > the better is to merge the driver via my tree.
> >
> > So, I'm basically sending your first patch to the mailing lists for
> > review.
> >
> > ---
> >
> > From e1fd36695ae082ae89a3155cabb5a84181ae9df4 Mon Sep 17 00:00:00 2001
> > From: Igor M. Liplianin <liplianin@...up.ru>
> > Date: Mon, 24 May 2010 13:09:23 +0300
> > Subject: Altera FPGA firmware download module.
> > Cc: Linux Media Mailing List <linux-media@...r.kernel.org>
> >
> > 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 | 2739
> > ++++++++++++++++++++++++++++++++++ drivers/misc/stapl-altera/jbicomp.c
> > | 163 ++
> > drivers/misc/stapl-altera/jbiexprt.h | 94 ++
> > 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, 4249 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..9628d9c
> > --- /dev/null
> > +++ b/drivers/misc/stapl-altera/altera.c
> > @@ -0,0 +1,2739 @@
> > +/*
> > + * 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 <linux/firmware.h>
> > +#include <linux/slab.h>
> > +#include <misc/altera.h>
> > +#include "jbiexprt.h"
> > +
> > +static int verbose = 1;
> > +module_param(verbose, int, 0644);
> > +MODULE_PARM_DESC(verbose, "enable debugging information");
>
> Better to call it as "debug".
>
> > +
> > +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
> > +
> > +/* This macro checks if a code address is inside the code section */
> > +#define CHECK_PC \
> > + if ((pc < code_section) || (pc >= debug_section)) { \
> > + status = JBIC_BOUNDS_ERROR; \
> > + }
>
> This is ugly: a macro with 3 hidden arguments... you might define it as:
>
> #define check_pc(pc, code_section, debug_section) \
> + (((pc < code_section) || (pc >= debug_section)) ? JBIC_BOUNDS_ERROR : 0)
>
> and call it as:
> status = check_pc(pc, code_section, debug_section);
>
> But I suspect that the better would be do do, instead:
>
> if ((pc < code_section) || (pc >= debug_section))
> goto jbic_bounds_error;
>
> on all places you're using it.
>
> > +
> > +#define dprintk(args...) \
> > + if (verbose) { \
> > + printk(KERN_DEBUG args); \
> > + }
> > +
> > +char *error_text[] = {
> > + /* JBIC_SUCCESS 0 */ "success",
> > + /* JBIC_OUT_OF_MEMORY 1 */ "out of memory",
> > + /* JBIC_IO_ERROR 2 */ "file access error",
> > + /* JAMC_SYNTAX_ERROR 3 */ "syntax error",
> > + /* JBIC_UNEXPECTED_END 4 */ "unexpected end of file",
> > + /* JBIC_UNDEFINED_SYMBOL 5 */ "undefined symbol",
> > + /* JAMC_REDEFINED_SYMBOL 6 */ "redefined symbol",
> > + /* JBIC_INTEGER_OVERFLOW 7 */ "integer overflow",
> > + /* JBIC_DIVIDE_BY_ZERO 8 */ "divide by zero",
> > + /* JBIC_CRC_ERROR 9 */ "CRC mismatch",
> > + /* JBIC_INTERNAL_ERROR 10 */ "internal error",
> > + /* JBIC_BOUNDS_ERROR 11 */ "bounds error",
> > + /* JAMC_TYPE_MISMATCH 12 */ "type mismatch",
> > + /* JAMC_ASSIGN_TO_CONST 13 */ "assignment to constant",
> > + /* JAMC_NEXT_UNEXPECTED 14 */ "NEXT unexpected",
> > + /* JAMC_POP_UNEXPECTED 15 */ "POP unexpected",
> > + /* JAMC_RETURN_UNEXPECTED 16 */ "RETURN unexpected",
> > + /* JAMC_ILLEGAL_SYMBOL 17 */ "illegal symbol name",
> > + /* JBIC_VECTOR_MAP_FAILED 18 */ "vector signal name not found",
> > + /* JBIC_USER_ABORT 19 */ "execution cancelled",
> > + /* JBIC_STACK_OVERFLOW 20 */ "stack overflow",
> > + /* JBIC_ILLEGAL_OPCODE 21 */ "illegal instruction code",
> > + /* JAMC_PHASE_ERROR 22 */ "phase error",
> > + /* JAMC_SCOPE_ERROR 23 */ "scope error",
> > + /* JBIC_ACTION_NOT_FOUND 24 */ "action not found",
> > +};
>
> The better would be to use standard Unix error codes here.
>
> > +
> > +#define MAX_ERROR_CODE
> > (int)((sizeof(error_text)/sizeof(error_text[0]))+1) +
> > +/* 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 = JBIC_STACK_OVERFLOW;
> > + return 0;
> > + }
> > +
> > + return 1;
> > +}
> > +
> > +static int jbi_strlen(char *string)
> > +{
> > + int len = 0;
> > +
> > + while (string[len] != '\0')
> > + ++len;
> > +
> > + return len;
> > +}
>
> Linux has strlen. Don't re-invent the wheel.
>
> > +
> > +static void jbi_ltoa(char *buffer, s32 number)
> > +{
> > + int index = 0;
> > + int rev_index = 0;
> > + char reverse[32];
> > +
> > + if (number < 0L) {
> > + buffer[index++] = '-';
> > + number = 0 - number;
> > + } else if (number == 0)
> > + buffer[index++] = '0';
> > +
> > + while (number != 0) {
> > + reverse[rev_index++] = (char)((number % 10) + '0');
> > + number /= 10;
> > + }
> > +
> > + while (rev_index > 0)
> > + buffer[index++] = reverse[--rev_index];
> > +
> > + buffer[index] = '\0';
> > +}
> > +
> > +static char jbi_toupper(char ch)
> > +{
> > + return (char)(((ch >= 'a') && (ch <= 'z')) ? (ch + 'A' - 'a') : ch);
> > +}
> > +
> > +static int jbi_stricmp(char *left, char *right)
> > +{
> > + int result = 0;
> > + char l, r;
> > +
> > + do {
> > + l = jbi_toupper(*left);
> > + r = jbi_toupper(*right);
> > + result = l - r;
> > + ++left;
> > + ++right;
> > + } while ((result == 0) && (l != '\0') && (r != '\0'));
> > +
> > + return result;
> > +}
> > +
> > +static void jbi_strncpy(char *left, char *right, int count)
> > +{
> > + char ch;
> > +
> > + do {
> > + *left = *right;
> > + ch = *right;
> > + ++left;
> > + ++right;
> > + --count;
> > + } while ((ch != '\0') && (count != 0));
> > +}
>
> Linux has functions for the above. Don't re-invent the wheel.
>
> > +
> > +static void jbi_make_dword(u8 *buf, u32 num)
> > +{
> > + buf[0] = (u8) num;
> > + buf[1] = (u8)(num >> 8L);
> > + buf[2] = (u8)(num >> 16L);
> > + buf[3] = (u8)(num >> 24L);
> > +}
> > +
> > +static u32 jbi_get_dword(u8 *buf)
> > +{
> > + return
> > + (((u32)buf[0]) |
> > + (((u32)buf[1]) << 8L) |
> > + (((u32)buf[2]) << 16L) |
> > + (((u32)buf[3]) << 24L));
> > +}
>
> Use the proper Linux functions to handle big/little endian.
>
> > +
> > +static void jbi_export_integer(char *key, s32 value)
> > +{
> > + dprintk("Export: key = \"%s\", value = %d\n", key, value);
> > +}
> > +
> > +#define HEX_LINE_CHARS 72
> > +#define HEX_LINE_BITS (HEX_LINE_CHARS * 4)
> > +
> > +static char conv_to_hex(u32 value)
> > +{
> > + char c;
> > +
> > + if (value > 9)
> > + c = (char)(value + ('A' - 10));
> > + else
> > + c = (char)(value + '0');
> > +
> > + return c;
> > +}
>
> There are some Linux functions for this also.
>
> > +
> > +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 = \"%s\", %d bits, value = HEX\n",
> > + key, count);
> > + lines = (count + (HEX_LINE_BITS - 1)) / HEX_LINE_BITS;
> > +
> > + for (line = 0; line < lines; ++line) {
> > + if (line < (lines - 1)) {
> > + linebits = HEX_LINE_BITS;
> > + size = HEX_LINE_CHARS;
> > + offset = count - ((line + 1) * HEX_LINE_BITS);
> > + } else {
> > + linebits =
> > + count - ((lines - 1) * HEX_LINE_BITS);
> > + size = (linebits + 3) / 4;
> > + offset = 0L;
> > + }
> > +
> > + string[size] = '\0';
> > + j = size - 1;
> > + value = 0;
> > +
> > + for (k = 0; k < linebits; ++k) {
> > + i = k + offset;
> > + if (data[i >> 3] & (1 << (i & 7)))
> > + value |= (1 << (i & 3));
> > + if ((i & 3) == 3) {
> > + string[j] = conv_to_hex(value);
> > + value = 0;
> > + --j;
> > + }
> > + }
> > + if ((k & 3) > 0)
> > + string[j] = conv_to_hex(value);
> > +
> > + dprintk("%s\n", string);
> > + }
> > +
> > + } else {
> > + size = (count + 3) / 4;
> > + string[size] = '\0';
> > + j = size - 1;
> > + value = 0;
> > +
> > + for (i = 0; i < count; ++i) {
> > + if (data[i >> 3] & (1 << (i & 7)))
> > + value |= (1 << (i & 3));
> > + if ((i & 3) == 3) {
> > + string[j] = conv_to_hex(value);
> > + value = 0;
> > + --j;
> > + }
> > + }
> > + if ((i & 3) > 0)
> > + string[j] = conv_to_hex(value);
> > +
> > + dprintk("Export: key = \"%s\", %d bits, value = HEX %s\n",
> > + key, count, string);
> > + }
> > +}
> > +
> > +static JBI_RETURN_TYPE jbi_execute(struct altera_config *astate,
> > + u8 *program,
> > + s32 program_size,
> > + s32 *error_address,
> > + int *exit_code,
> > + int *format_version)
> > +{
> > + static char message_buffer[JBIC_MESSAGE_LENGTH + 1];
> > + static long stack[JBI_STACK_SIZE] = {0L};/*64 bits*/
> > + JBI_RETURN_TYPE status = JBIC_SUCCESS;
> > + u32 first_word = 0L;
> > + u32 action_table = 0L;
> > + u32 proc_table = 0L;
> > + u32 string_table = 0L;
> > + u32 symbol_table = 0L;
> > + u32 data_section = 0L;
> > + u32 code_section = 0L;
> > + u32 debug_section = 0L;
> > + u32 action_count = 0L;
> > + u32 proc_count = 0L;
> > + u32 symbol_count = 0L;
> > + long *variables = NULL;/*64bits*/
> > + s32 *variable_size = NULL;
> > + char *attributes = 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*/
> > + 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 uncompressed_size;
> > + u32 offset;
> > + u32 value;
> > + int current_proc = 0;
> > + int reverse;
> > +
> > + char *name;
> > +
> > + dprintk("%s\n", __func__);
> > +
> > + /* Read header information */
> > + if (program_size > 52L) {
> > + first_word = GET_DWORD(0);
>
> GET_DWORD here masks the fact that it is reading a dword data, from a
> variable called "program". Please, don't do that. Also, again, what this
> function actually does is to convert a data using a given endiannes.
> As it is defined as:
>
> #define GET_BYTE(x) (program[x])
> #define GET_DWORD(x) \
> (((((u32) GET_BYTE(x)) << 24L) & 0xFF000000L) | \
> ((((u32) GET_BYTE((x)+1)) << 16L) & 0x00FF0000L) | \
> ((((u32) GET_BYTE((x)+2)) << 8L) & 0x0000FF00L) | \
> (((u32) GET_BYTE((x)+3)) & 0x000000FFL))
>
> you're getting a 32 bits encoded as little endian. So, the Linux way for it
> would be to use, instead:
>
> get_unaligned_le32(&program[0]);
>
> (the same applies to all cases of GET_BYTE/GET_WORD/GET_DWORD)
>
> > + version = (int)(first_word & 1L);
> > + *format_version = version + 1;
> > + delta = version * 8;
> > +
> > + action_table = GET_DWORD(4);
> > + proc_table = GET_DWORD(8);
> > + string_table = GET_DWORD(4 + delta);
> > + symbol_table = GET_DWORD(16 + delta);
> > + data_section = GET_DWORD(20 + delta);
> > + code_section = GET_DWORD(24 + delta);
> > + debug_section = GET_DWORD(28 + delta);
> > + action_count = GET_DWORD(40 + delta);
> > + proc_count = GET_DWORD(44 + delta);
> > + symbol_count = GET_DWORD(48 + (2 * delta));
> > + }
> > +
> > + if ((first_word != 0x4A414D00L) && (first_word != 0x4A414D01L)) {
> > + done = 1;
> > + status = JBIC_IO_ERROR;
> > + goto exit_done;
> > + }
> > +
> > + if (symbol_count <= 0)
> > + goto exit_done;
> > + /* 64 bits */
> > + variables = kmalloc((u32)symbol_count * sizeof(long), GFP_KERNEL);
> > +
> > + if (variables == NULL)
> > + status = JBIC_OUT_OF_MEMORY;
>
> status = -ENOMEM;
>
> > +
> > + if (status == JBIC_SUCCESS) {
> > + variable_size = kmalloc(
> > + (u32)symbol_count * sizeof(s32), GFP_KERNEL);
> > +
> > + if (variable_size == NULL)
> > + status = JBIC_OUT_OF_MEMORY;
> > + }
> > +
> > + if (status == JBIC_SUCCESS) {
> > + attributes = (char *)
> > + kmalloc((u32)symbol_count, GFP_KERNEL);
> > +
> > + if (attributes == NULL)
> > + status = JBIC_OUT_OF_MEMORY;
> > + }
> > +
> > + if ((status == JBIC_SUCCESS) && (version > 0)) {
> > + proc_attributes = (u8 *)
> > + kmalloc((u32)proc_count, GFP_KERNEL);
> > +
> > + if (proc_attributes == NULL)
> > + status = JBIC_OUT_OF_MEMORY;
> > + }
>
> Same for all above: -ENOMEM.
>
> > +
> > + if (status != JBIC_SUCCESS)
> > + goto exit_done;
> > +
> > + delta = version * 2;
> > +
> > + for (i = 0; i < (u32)symbol_count; ++i) {
> > + offset = (u32)
> > + (symbol_table + ((11 + delta) * i));
> > +
> > + value = GET_DWORD(offset + 3 + delta);
> > +
> > + attributes[i] = GET_BYTE(offset);
> > +
> > + /* use bit 7 of attribute byte to indicate that
> > + this buffer was dynamically allocated
> > + and should be freed later */
> > + attributes[i] &= 0x7f;
> > +
> > + variable_size[i] = GET_DWORD(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 ((attributes[i] & 0x0c) == 0x04)
> > + /* initialized scalar variable */
> > + variables[i] = value;
> > + else if ((attributes[i] & 0x1e) == 0x0e) {
> > + /* initialized compressed
> > + Boolean array */
> > + uncompressed_size = jbi_get_dword(
> > + &program[data_section + value]);
> > +
> > + /* allocate a buffer for the
> > + uncompressed data */
> > + variables[i] = (long)kmalloc(uncompressed_size,
> > + GFP_KERNEL);
> > + dprintk("%s: var=%lx, (s32)var=%x\n", __func__,
> > + variables[i], (s32)variables[i]);
> > + if (variables[i] == 0L)
> > + status = JBIC_OUT_OF_MEMORY;
> > + else {
> > + /* set flag so buffer
> > + will be freed later */
> > + attributes[i] |= 0x80;
> > +
> > + /* uncompress the data */
> > + if (jbi_uncompress(&program[data_section +
> > + value],
> > + variable_size[i],
> > + (u8 *)variables[i],/*64 bits*/
> > + uncompressed_size,
> > + version) != uncompressed_size)
> > + /* decompression failed */
> > + status = JBIC_IO_ERROR;
> > + else /*64 bits?*/
> > + variable_size[i] =
> > + uncompressed_size * 8L;
> > +
> > + }
> > + } else if ((attributes[i] & 0x1e) == 0x0c) {
> > + /* initialized Boolean array */
> > + /*64 bits*/
> > + variables[i] = value + data_section + (long)program;
> > + } else if ((attributes[i] & 0x1c) == 0x1c) {
> > + /* initialized integer array */
> > + variables[i] = value + data_section;
> > + } else if ((attributes[i] & 0x0c) == 0x08) {
> > + /* uninitialized array */
> > +
> > + /* flag attributes so
> > + that memory is freed */
> > + attributes[i] |= 0x80;
> > +
> > + if (variable_size[i] > 0) {
> > + u32 size;
> > +
> > + if (attributes[i] & 0x10)
> > + /* integer array */
> > + size = (u32)(variable_size[i] *
> > + sizeof(s32));
> > + else
> > + /* Boolean array */
> > + size = (u32)
> > + ((variable_size[i] + 7L) / 8L);
> > + /*64 bits*/
> > + variables[i] = (long)kmalloc(size, GFP_KERNEL);
> > +
> > + if (variables[i] == 0) {
> > + status = JBIC_OUT_OF_MEMORY;
> > + } else {
> > + /* zero out memory */
> > + for (j = 0; j < size; ++j)
> > + /*64 bits*/
> > + ((u8 *)(variables[i]))[j] = 0;
> > +
> > + }
> > + } else
> > + variables[i] = 0;
> > +
> > + } else
> > + variables[i] = 0;
> > +
> > + }
> > +
> > +exit_done:
> > + if (status != JBIC_SUCCESS)
> > + done = 1;
> > +
> > + jbi_init_jtag();
> > +
> > + pc = code_section;
> > + message_buffer[0] = '\0';
> > +
> > + /*
> > + For JBC version 2, we will execute the procedures corresponding to
> > + the selected ACTION */
> > + if (version > 0) {
> > + if (astate->action == NULL) {
> > + status = JBIC_ACTION_NOT_FOUND;
> > + done = 1;
> > + } else {
> > + int action_found = 0;
> > + for (i = 0; (i < action_count) && !action_found; ++i) {
> > + name_id = GET_DWORD(action_table + (12 * i));
> > +
> > + name = (char *)&program[string_table + name_id];
> > +
> > + if (jbi_stricmp(astate->action, name) == 0) {
> > + action_found = 1;
> > + current_proc = (int)
> > + GET_DWORD(action_table +
> > + (12 * i) + 8);
> > + }
> > + }
> > +
> > + if (!action_found) {
> > + status = JBIC_ACTION_NOT_FOUND;
> > + done = 1;
> > + }
> > + }
> > +
> > + if (status == JBIC_SUCCESS) {
> > + int first_time = 1;
> > + i = current_proc;
> > + while ((i != 0) || first_time) {
> > + first_time = 0;
> > + /* check procedure attribute byte */
> > + proc_attributes[i] = (u8)
> > + (GET_BYTE(proc_table +
> > + (13 * i) + 8) &
> > + 0x03);
> > +
> > + /*
> > + BIT0 - OPTIONAL
> > + BIT1 - RECOMMENDED
> > + BIT6 - FORCED OFF
> > + BIT7 - FORCED ON
> > + */
> > +
> > + i = (u32)GET_DWORD(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_DWORD(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_section +
> > + GET_DWORD(proc_table + (13 * i) + 9);
> > + CHECK_PC;
>
> See my comments above. The code will look cleaner if you use, instead of
> the macro, something like:
>
> if ((pc < code_section) || (pc >= debug_section))
> goto jbic_bounds_error;
>
> (if you can simply abort the programming due to the error)
>
> or
>
> if ((pc < code_section) || (pc >= debug_section))
> status = <error code>;
>
> if you really need to program everything even knowing in advance that an
> error happened.
>
> > + } else
> > + /* there are no procedures to execute! */
> > + done = 1;
> > +
> > + }
> > + }
> > +
> > + message_buffer[0] = '\0';
> > +
> > + while (!done) {
> > + opcode = (u32)(GET_BYTE(pc) & 0xff);
> > + opcode_address = pc;
> > + ++pc;
> > +
> > + if (verbose > 1)
> > + printk("opcode: %02x\n", opcode);
> > +
> > + arg_count = (opcode >> 6) & 3;
> > + for (i = 0; i < arg_count; ++i) {
> > + args[i] = GET_DWORD(pc);
> > + pc += 4;
> > + }
> > +
> > + switch (opcode) {
> > + case 0x00: /* NOP */
> > + break;
> > + case 0x01: /* DUP */
> > + if (jbi_check_stack(stack_ptr, 1, &status)) {
> > + stack[stack_ptr] = stack[stack_ptr - 1];
> > + ++stack_ptr;
> > + }
> > + break;
> > + case 0x02: /* 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 0x03: /* ADD */
>
> hmm... the better would be to do:
>
> enum altera_fpga_opcode {
> OP_NOP = 0,
> OP_DUP = 1,
> OP_SWP = 2,
> OP_ADD = 3,
> ...
> };
>
> switch (obcode) {
> case OP_NOP:
> /* do something */
> ...
> }
>
> The rest of the driver have the same problems as pointed above.
>
> Please fix, and submit a version 2.
Thank you Mauro.
I'm working on it.
Igor
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