X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fjtag%2Fparport.c;h=52289c5e0edcbbcc1978f974c9e709a7b0ddff8d;hp=7311bad80db50b845d310f35fbeabfb49ae4e9a5;hb=7bf1a86e473a12882bf6f71cb4d0d416394b69d4;hpb=f76cf27380af20a6e1d46448c146140234d914f9 diff --git a/src/jtag/parport.c b/src/jtag/parport.c index 7311bad80d..52289c5e0e 100644 --- a/src/jtag/parport.c +++ b/src/jtag/parport.c @@ -1,491 +1,521 @@ -/*************************************************************************** - * Copyright (C) 2005 by Dominic Rath * - * Dominic.Rath@gmx.de * - * * - * 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., * - * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * - ***************************************************************************/ -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include "replacements.h" - -#include "jtag.h" -#include "bitbang.h" - -/* system includes */ -// -ino: 060521-1036 -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) - -#include -#include -#include -#define ioperm(startport,length,enable)\ - i386_set_ioperm((startport), (length), (enable)) - -#else - -#ifdef _WIN32 -#include "errno.h" -#endif /* _WIN32 */ - -#endif /* __FreeBSD__ */ - -#include -#include -#include - -#if PARPORT_USE_PPDEV == 1 -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) -#include -#include -#define PPRSTATUS PPIGSTATUS -#define PPWDATA PPISDATA -#else -#include -#include -#endif -#include -#include -#else /* not PARPORT_USE_PPDEV */ -#ifndef _WIN32 -#include -#endif -#endif - -#if PARPORT_USE_GIVEIO == 1 -#if IS_CYGWIN == 1 -#include -#include -#undef ERROR -#endif -#endif - -#include "log.h" - -/* parallel port cable description - */ -typedef struct cable_s -{ - char* name; - u8 TDO_MASK; /* status port bit containing current TDO value */ - u8 TRST_MASK; /* data port bit for TRST */ - u8 TMS_MASK; /* data port bit for TMS */ - u8 TCK_MASK; /* data port bit for TCK */ - u8 TDI_MASK; /* data port bit for TDI */ - u8 SRST_MASK; /* data port bit for SRST */ - u8 OUTPUT_INVERT; /* data port bits that should be inverted */ - u8 INPUT_INVERT; /* status port that should be inverted */ - u8 PORT_INIT; /* initialize data port with this value */ - u8 PORT_EXIT; /* de-initialize data port with this value */ - u8 LED_MASK; /* data port bit for LED */ -} cable_t; - -cable_t cables[] = -{ - /* name tdo trst tms tck tdi srst o_inv i_inv init exit led */ - { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x80, 0x00 }, - { "wiggler2", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x00, 0x20 }, - { "wiggler_ntrst_inverted", - 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x11, 0x80, 0x80, 0x80, 0x00 }, - { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80, 0x80, 0x00 }, - { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }, - { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00 }, - { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }, - { "lattice", 0x40, 0x10, 0x04, 0x02, 0x01, 0x08, 0x00, 0x00, 0x18, 0x18, 0x00 }, - { "flashlink", 0x20, 0x10, 0x02, 0x01, 0x04, 0x20, 0x30, 0x20, 0x00, 0x00, 0x00 }, -/* Altium Universal JTAG cable. Set the cable to Xilinx Mode and wire to target as follows: - HARD TCK - Target TCK - HARD TMS - Target TMS - HARD TDI - Target TDI - HARD TDO - Target TDO - SOFT TCK - Target TRST - SOFT TDI - Target SRST -*/ - { "altium", 0x10, 0x20, 0x04, 0x02, 0x01, 0x80, 0x00, 0x00, 0x10, 0x00, 0x08 }, - { NULL, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } -}; - -/* configuration */ -char* parport_cable = NULL; -u16 parport_port; -static int parport_exit = 0; - -/* interface variables - */ -static cable_t* cable; -static u8 dataport_value = 0x0; - -#if PARPORT_USE_PPDEV == 1 -static int device_handle; -#else -static unsigned long dataport; -static unsigned long statusport; -#endif - -/* low level command set - */ -int parport_read(void); -void parport_write(int tck, int tms, int tdi); -void parport_reset(int trst, int srst); -void parport_led(int on); - -int parport_speed(int speed); -int parport_register_commands(struct command_context_s *cmd_ctx); -int parport_init(void); -int parport_quit(void); - -/* interface commands */ -int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); -int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); -int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc); - -jtag_interface_t parport_interface = -{ - .name = "parport", - - .execute_queue = bitbang_execute_queue, - - .speed = parport_speed, - .register_commands = parport_register_commands, - .init = parport_init, - .quit = parport_quit, -}; - -bitbang_interface_t parport_bitbang = -{ - .read = parport_read, - .write = parport_write, - .reset = parport_reset, - .blink = parport_led -}; - -int parport_read(void) -{ - int data = 0; - -#if PARPORT_USE_PPDEV == 1 - ioctl(device_handle, PPRSTATUS, & data); -#else - data = inb(statusport); -#endif - - if ((data ^ cable->INPUT_INVERT) & cable->TDO_MASK) - return 1; - else - return 0; -} - -static inline void parport_write_data(void) -{ - u8 output; - output = dataport_value ^ cable->OUTPUT_INVERT; - -#if PARPORT_USE_PPDEV == 1 - ioctl(device_handle, PPWDATA, &output); -#else -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) - outb(dataport, output); -#else - outb(output, dataport); -#endif -#endif -} - -void parport_write(int tck, int tms, int tdi) -{ - int i = jtag_speed + 1; - - if (tck) - dataport_value |= cable->TCK_MASK; - else - dataport_value &= ~cable->TCK_MASK; - - if (tms) - dataport_value |= cable->TMS_MASK; - else - dataport_value &= ~cable->TMS_MASK; - - if (tdi) - dataport_value |= cable->TDI_MASK; - else - dataport_value &= ~cable->TDI_MASK; - - while (i-- > 0) - parport_write_data(); -} - -/* (1) assert or (0) deassert reset lines */ -void parport_reset(int trst, int srst) -{ - DEBUG("trst: %i, srst: %i", trst, srst); - - if (trst == 0) - dataport_value |= cable->TRST_MASK; - else if (trst == 1) - dataport_value &= ~cable->TRST_MASK; - - if (srst == 0) - dataport_value |= cable->SRST_MASK; - else if (srst == 1) - dataport_value &= ~cable->SRST_MASK; - - parport_write_data(); -} - -/* turn LED on parport adapter on (1) or off (0) */ -void parport_led(int on) -{ - if (on) - dataport_value |= cable->LED_MASK; - else - dataport_value &= ~cable->LED_MASK; - - parport_write_data(); -} - -int parport_speed(int speed) -{ - jtag_speed = speed; - - return ERROR_OK; -} - -int parport_register_commands(struct command_context_s *cmd_ctx) -{ - register_command(cmd_ctx, NULL, "parport_port", parport_handle_parport_port_command, - COMMAND_CONFIG, NULL); - register_command(cmd_ctx, NULL, "parport_cable", parport_handle_parport_cable_command, - COMMAND_CONFIG, NULL); - register_command(cmd_ctx, NULL, "parport_write_on_exit", parport_handle_write_on_exit_command, - COMMAND_CONFIG, NULL); - - return ERROR_OK; -} - -#if PARPORT_USE_GIVEIO == 1 -int parport_get_giveio_access() -{ - HANDLE h; - OSVERSIONINFO version; - - version.dwOSVersionInfoSize = sizeof version; - if (!GetVersionEx( &version )) { - errno = EINVAL; - return -1; - } - if (version.dwPlatformId != VER_PLATFORM_WIN32_NT) - return 0; - - h = CreateFile( "\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL ); - if (h == INVALID_HANDLE_VALUE) { - errno = ENODEV; - return -1; - } - - CloseHandle( h ); - - return 0; -} -#endif - -int parport_init(void) -{ - cable_t *cur_cable; -#if PARPORT_USE_PPDEV == 1 - char buffer[256]; - int i = 0; -#endif - - cur_cable = cables; - - if ((parport_cable == NULL) || (parport_cable[0] == 0)) - { - parport_cable = "wiggler"; - WARNING("No parport cable specified, using default 'wiggler'"); - } - - while (cur_cable->name) - { - if (strcmp(cur_cable->name, parport_cable) == 0) - { - cable = cur_cable; - break; - } - cur_cable++; - } - - if (!cable) - { - ERROR("No matching cable found for %s", parport_cable); - return ERROR_JTAG_INIT_FAILED; - } - - dataport_value = cable->PORT_INIT; - -#if PARPORT_USE_PPDEV == 1 - if (device_handle > 0) - { - ERROR("device is already opened"); - return ERROR_JTAG_INIT_FAILED; - } - -#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) - DEBUG("opening /dev/ppi%d...", parport_port); - - snprintf(buffer, 256, "/dev/ppi%d", parport_port); - device_handle = open(buffer, O_WRONLY); -#else /* not __FreeBSD__, __FreeBSD_kernel__ */ - DEBUG("opening /dev/parport%d...", parport_port); - - snprintf(buffer, 256, "/dev/parport%d", parport_port); - device_handle = open(buffer, O_WRONLY); -#endif /* __FreeBSD__, __FreeBSD_kernel__ */ - - if (device_handle < 0) - { - ERROR("cannot open device. check it exists and that user read and write rights are set"); - return ERROR_JTAG_INIT_FAILED; - } - - DEBUG("...open"); - -#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) - i=ioctl(device_handle, PPCLAIM); - if (i<0) - { - ERROR("cannot claim device"); - return ERROR_JTAG_INIT_FAILED; - } - - i = PARPORT_MODE_COMPAT; - i= ioctl(device_handle, PPSETMODE, & i); - if (i<0) - { - ERROR(" cannot set compatible mode to device"); - return ERROR_JTAG_INIT_FAILED; - } - - i = IEEE1284_MODE_COMPAT; - i = ioctl(device_handle, PPNEGOT, & i); - if (i<0) - { - ERROR("cannot set compatible 1284 mode to device"); - return ERROR_JTAG_INIT_FAILED; - } -#endif /* not __FreeBSD__, __FreeBSD_kernel__ */ - -#else /* not PARPORT_USE_PPDEV */ - if (parport_port == 0) - { - parport_port = 0x378; - WARNING("No parport port specified, using default '0x378' (LPT1)"); - } - - dataport = parport_port; - statusport = parport_port + 1; - - DEBUG("requesting privileges for parallel port 0x%lx...", dataport); -#if PARPORT_USE_GIVEIO == 1 - if (parport_get_giveio_access() != 0) -#else /* PARPORT_USE_GIVEIO */ - if (ioperm(dataport, 3, 1) != 0) -#endif /* PARPORT_USE_GIVEIO */ - { - ERROR("missing privileges for direct i/o"); - return ERROR_JTAG_INIT_FAILED; - } - DEBUG("...privileges granted"); - - /* make sure parallel port is in right mode (clear tristate and interrupt */ - #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) - outb(parport_port + 2, 0x0); - #else - outb(0x0, parport_port + 2); - #endif - -#endif /* PARPORT_USE_PPDEV */ - - parport_reset(0, 0); - parport_write(0, 0, 0); - parport_led(1); - - bitbang_interface = &parport_bitbang; - - return ERROR_OK; -} - -int parport_quit(void) -{ - parport_led(0); - - if (parport_exit) - { - dataport_value = cable->PORT_EXIT; - parport_write_data(); - } - - if (parport_cable) - { - free(parport_cable); - parport_cable = NULL; - } - - return ERROR_OK; -} - -int parport_handle_parport_port_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - if (argc == 0) - return ERROR_OK; - - /* only if the port wasn't overwritten by cmdline */ - if (parport_port == 0) - parport_port = strtoul(args[0], NULL, 0); - - return ERROR_OK; -} - -int parport_handle_parport_cable_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - if (argc == 0) - return ERROR_OK; - - /* only if the cable name wasn't overwritten by cmdline */ - if (parport_cable == 0) - { - parport_cable = malloc(strlen(args[0]) + sizeof(char)); - strcpy(parport_cable, args[0]); - } - - return ERROR_OK; -} - -int parport_handle_write_on_exit_command(struct command_context_s *cmd_ctx, char *cmd, char **args, int argc) -{ - if (argc != 1) - { - command_print(cmd_ctx, "usage: parport_write_on_exit "); - return ERROR_OK; - } - - if (strcmp(args[0], "on") == 0) - parport_exit = 1; - else if (strcmp(args[0], "off") == 0) - parport_exit = 0; - - return ERROR_OK; -} +/*************************************************************************** + * Copyright (C) 2005 by Dominic Rath * + * Dominic.Rath@gmx.de * + * * + * Copyright (C) 2008 by Spencer Oliver * + * spen@spen-soft.co.uk * + * * + * 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., * + * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. * + ***************************************************************************/ +#ifdef HAVE_CONFIG_H +#include "config.h" +#endif + +#include "interface.h" +#include "bitbang.h" + +/* -ino: 060521-1036 */ +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) +#include +#include +#define ioperm(startport,length,enable)\ + i386_set_ioperm((startport), (length), (enable)) +#endif /* __FreeBSD__ */ + +#if PARPORT_USE_PPDEV == 1 +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) +#include +#include +#define PPRSTATUS PPIGSTATUS +#define PPWDATA PPISDATA +#else +#include +#include +#endif +#include +#else /* not PARPORT_USE_PPDEV */ +#ifndef _WIN32 +#include +#endif +#endif + +#if PARPORT_USE_GIVEIO == 1 && IS_CYGWIN == 1 +#include +#endif + + +/* parallel port cable description + */ +struct cable { + char* name; + uint8_t TDO_MASK; /* status port bit containing current TDO value */ + uint8_t TRST_MASK; /* data port bit for TRST */ + uint8_t TMS_MASK; /* data port bit for TMS */ + uint8_t TCK_MASK; /* data port bit for TCK */ + uint8_t TDI_MASK; /* data port bit for TDI */ + uint8_t SRST_MASK; /* data port bit for SRST */ + uint8_t OUTPUT_INVERT; /* data port bits that should be inverted */ + uint8_t INPUT_INVERT; /* status port that should be inverted */ + uint8_t PORT_INIT; /* initialize data port with this value */ + uint8_t PORT_EXIT; /* de-initialize data port with this value */ + uint8_t LED_MASK; /* data port bit for LED */ +}; + +static struct cable cables[] = +{ + /* name tdo trst tms tck tdi srst o_inv i_inv init exit led */ + { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x80, 0x00 }, + { "wiggler2", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80, 0x00, 0x20 }, + { "wiggler_ntrst_inverted", + 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x11, 0x80, 0x80, 0x80, 0x00 }, + { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80, 0x80, 0x00 }, + { "arm-jtag", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x01, 0x80, 0x80, 0x80, 0x00 }, + { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }, + { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10, 0x10, 0x00 }, + { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00, 0x00, 0x00 }, + { "lattice", 0x40, 0x10, 0x04, 0x02, 0x01, 0x08, 0x00, 0x00, 0x18, 0x18, 0x00 }, + { "flashlink", 0x20, 0x10, 0x02, 0x01, 0x04, 0x20, 0x30, 0x20, 0x00, 0x00, 0x00 }, +/* Altium Universal JTAG cable. Set the cable to Xilinx Mode and wire to target as follows: + HARD TCK - Target TCK + HARD TMS - Target TMS + HARD TDI - Target TDI + HARD TDO - Target TDO + SOFT TCK - Target TRST + SOFT TDI - Target SRST +*/ + { "altium", 0x10, 0x20, 0x04, 0x02, 0x01, 0x80, 0x00, 0x00, 0x10, 0x00, 0x08 }, + { NULL, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } +}; + +/* configuration */ +static char* parport_cable = NULL; +static uint16_t parport_port; +static int parport_exit = 0; +static uint32_t parport_toggling_time_ns = 1000; +static int wait_states; + +/* interface variables + */ +static struct cable* cable; +static uint8_t dataport_value = 0x0; + +#if PARPORT_USE_PPDEV == 1 +static int device_handle; +#else +static unsigned long dataport; +static unsigned long statusport; +#endif + +static int parport_read(void) +{ + int data = 0; + +#if PARPORT_USE_PPDEV == 1 + ioctl(device_handle, PPRSTATUS, & data); +#else + data = inb(statusport); +#endif + + if ((data ^ cable->INPUT_INVERT) & cable->TDO_MASK) + return 1; + else + return 0; +} + +static __inline__ void parport_write_data(void) +{ + uint8_t output; + output = dataport_value ^ cable->OUTPUT_INVERT; + +#if PARPORT_USE_PPDEV == 1 + ioctl(device_handle, PPWDATA, &output); +#else +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) + outb(dataport, output); +#else + outb(output, dataport); +#endif +#endif +} + +static void parport_write(int tck, int tms, int tdi) +{ + int i = wait_states + 1; + + if (tck) + dataport_value |= cable->TCK_MASK; + else + dataport_value &= ~cable->TCK_MASK; + + if (tms) + dataport_value |= cable->TMS_MASK; + else + dataport_value &= ~cable->TMS_MASK; + + if (tdi) + dataport_value |= cable->TDI_MASK; + else + dataport_value &= ~cable->TDI_MASK; + + while (i-- > 0) + parport_write_data(); +} + +/* (1) assert or (0) deassert reset lines */ +static void parport_reset(int trst, int srst) +{ + LOG_DEBUG("trst: %i, srst: %i", trst, srst); + + if (trst == 0) + dataport_value |= cable->TRST_MASK; + else if (trst == 1) + dataport_value &= ~cable->TRST_MASK; + + if (srst == 0) + dataport_value |= cable->SRST_MASK; + else if (srst == 1) + dataport_value &= ~cable->SRST_MASK; + + parport_write_data(); +} + +/* turn LED on parport adapter on (1) or off (0) */ +static void parport_led(int on) +{ + if (on) + dataport_value |= cable->LED_MASK; + else + dataport_value &= ~cable->LED_MASK; + + parport_write_data(); +} + +static int parport_speed(int speed) +{ + wait_states = speed; + return ERROR_OK; +} + +static int parport_khz(int khz, int* jtag_speed) +{ + if (khz == 0) { + LOG_DEBUG("RCLK not supported"); + return ERROR_FAIL; + } + + *jtag_speed = 499999 / (khz * parport_toggling_time_ns); + return ERROR_OK; +} + +static int parport_speed_div(int speed, int* khz) +{ + uint32_t denominator = (speed + 1) * parport_toggling_time_ns; + + *khz = (499999 + denominator) / denominator; + return ERROR_OK; +} + +#if PARPORT_USE_GIVEIO == 1 +static int parport_get_giveio_access(void) +{ + HANDLE h; + OSVERSIONINFO version; + + version.dwOSVersionInfoSize = sizeof version; + if (!GetVersionEx(&version)) { + errno = EINVAL; + return -1; + } + if (version.dwPlatformId != VER_PLATFORM_WIN32_NT) + return 0; + + h = CreateFile("\\\\.\\giveio", GENERIC_READ, 0, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL); + if (h == INVALID_HANDLE_VALUE) { + errno = ENODEV; + return -1; + } + + CloseHandle(h); + + return 0; +} +#endif + +static struct bitbang_interface parport_bitbang = { + .read = &parport_read, + .write = &parport_write, + .reset = &parport_reset, + .blink = &parport_led, + }; + +static int parport_init(void) +{ + struct cable *cur_cable; +#if PARPORT_USE_PPDEV == 1 + char buffer[256]; + int i = 0; +#endif + + cur_cable = cables; + + if ((parport_cable == NULL) || (parport_cable[0] == 0)) + { + parport_cable = "wiggler"; + LOG_WARNING("No parport cable specified, using default 'wiggler'"); + } + + while (cur_cable->name) + { + if (strcmp(cur_cable->name, parport_cable) == 0) + { + cable = cur_cable; + break; + } + cur_cable++; + } + + if (!cable) + { + LOG_ERROR("No matching cable found for %s", parport_cable); + return ERROR_JTAG_INIT_FAILED; + } + + dataport_value = cable->PORT_INIT; + +#if PARPORT_USE_PPDEV == 1 + if (device_handle > 0) + { + LOG_ERROR("device is already opened"); + return ERROR_JTAG_INIT_FAILED; + } + +#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) + LOG_DEBUG("opening /dev/ppi%d...", parport_port); + + snprintf(buffer, 256, "/dev/ppi%d", parport_port); + device_handle = open(buffer, O_WRONLY); +#else /* not __FreeBSD__, __FreeBSD_kernel__ */ + LOG_DEBUG("opening /dev/parport%d...", parport_port); + + snprintf(buffer, 256, "/dev/parport%d", parport_port); + device_handle = open(buffer, O_WRONLY); +#endif /* __FreeBSD__, __FreeBSD_kernel__ */ + + if (device_handle < 0) + { + int err = errno; + LOG_ERROR("cannot open device. check it exists and that user read and write rights are set. errno=%d", err); + return ERROR_JTAG_INIT_FAILED; + } + + LOG_DEBUG("...open"); + +#if !defined(__FreeBSD__) && !defined(__FreeBSD_kernel__) + i = ioctl(device_handle, PPCLAIM); + if (i < 0) + { + LOG_ERROR("cannot claim device"); + return ERROR_JTAG_INIT_FAILED; + } + + i = PARPORT_MODE_COMPAT; + i= ioctl(device_handle, PPSETMODE, & i); + if (i < 0) + { + LOG_ERROR(" cannot set compatible mode to device"); + return ERROR_JTAG_INIT_FAILED; + } + + i = IEEE1284_MODE_COMPAT; + i = ioctl(device_handle, PPNEGOT, & i); + if (i < 0) + { + LOG_ERROR("cannot set compatible 1284 mode to device"); + return ERROR_JTAG_INIT_FAILED; + } +#endif /* not __FreeBSD__, __FreeBSD_kernel__ */ + +#else /* not PARPORT_USE_PPDEV */ + if (parport_port == 0) + { + parport_port = 0x378; + LOG_WARNING("No parport port specified, using default '0x378' (LPT1)"); + } + + dataport = parport_port; + statusport = parport_port + 1; + + LOG_DEBUG("requesting privileges for parallel port 0x%lx...", dataport); +#if PARPORT_USE_GIVEIO == 1 + if (parport_get_giveio_access() != 0) +#else /* PARPORT_USE_GIVEIO */ + if (ioperm(dataport, 3, 1) != 0) +#endif /* PARPORT_USE_GIVEIO */ + { + LOG_ERROR("missing privileges for direct i/o"); + return ERROR_JTAG_INIT_FAILED; + } + LOG_DEBUG("...privileges granted"); + + /* make sure parallel port is in right mode (clear tristate and interrupt */ + #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) + outb(parport_port + 2, 0x0); + #else + outb(0x0, parport_port + 2); + #endif + +#endif /* PARPORT_USE_PPDEV */ + + parport_reset(0, 0); + parport_write(0, 0, 0); + parport_led(1); + + bitbang_interface = &parport_bitbang; + + wait_states = jtag_get_speed(); + + return ERROR_OK; +} + +static int parport_quit(void) +{ + parport_led(0); + + if (parport_exit) + { + dataport_value = cable->PORT_EXIT; + parport_write_data(); + } + + if (parport_cable) + { + free(parport_cable); + parport_cable = NULL; + } + + return ERROR_OK; +} + +COMMAND_HANDLER(parport_handle_parport_port_command) +{ + if (CMD_ARGC == 1) + { + /* only if the port wasn't overwritten by cmdline */ + if (parport_port == 0) + { + COMMAND_PARSE_NUMBER(u16, args[0], parport_port); + } + else + { + LOG_ERROR("The parport port was already configured!"); + return ERROR_FAIL; + } + } + + command_print(cmd_ctx, "parport port = %u", parport_port); + + return ERROR_OK; +} + +COMMAND_HANDLER(parport_handle_parport_cable_command) +{ + if (CMD_ARGC == 0) + return ERROR_OK; + + /* only if the cable name wasn't overwritten by cmdline */ + if (parport_cable == 0) + { + parport_cable = malloc(strlen(args[0]) + sizeof(char)); + strcpy(parport_cable, args[0]); + } + + return ERROR_OK; +} + +COMMAND_HANDLER(parport_handle_write_on_exit_command) +{ + if (CMD_ARGC != 1) + { + command_print(cmd_ctx, "usage: parport_write_on_exit "); + return ERROR_OK; + } + + if (strcmp(args[0], "on") == 0) + parport_exit = 1; + else if (strcmp(args[0], "off") == 0) + parport_exit = 0; + + return ERROR_OK; +} + +COMMAND_HANDLER(parport_handle_parport_toggling_time_command) +{ + if (CMD_ARGC == 1) { + uint32_t ns; + int retval = parse_u32(args[0], &ns); + + if (ERROR_OK != retval) + return retval; + + if (ns == 0) { + LOG_ERROR("0 ns is not a valid parport toggling time"); + return ERROR_FAIL; + } + + parport_toggling_time_ns = ns; + wait_states = jtag_get_speed(); + } + + command_print(cmd_ctx, "parport toggling time = %" PRIu32 " ns", + parport_toggling_time_ns); + + return ERROR_OK; +} + +static int parport_register_commands(struct command_context *cmd_ctx) +{ + register_command(cmd_ctx, NULL, "parport_port", + parport_handle_parport_port_command, COMMAND_CONFIG, + "either the address of the I/O port " + "or the number of the '/dev/parport' device"); + + register_command(cmd_ctx, NULL, "parport_cable", + parport_handle_parport_cable_command, COMMAND_CONFIG, + "the layout of the parallel port cable " + "used to connect to the target"); + + register_command(cmd_ctx, NULL, "parport_write_on_exit", + parport_handle_write_on_exit_command, COMMAND_CONFIG, + "configure the parallel driver to write " + "a known value to the parallel interface"); + + register_command(cmd_ctx, NULL, "parport_toggling_time", + parport_handle_parport_toggling_time_command, COMMAND_ANY, + "time it takes for the hardware to toggle TCK"); + + return ERROR_OK; +} + +struct jtag_interface parport_interface = { + .name = "parport", + .register_commands = parport_register_commands, + .init = parport_init, + .quit = parport_quit, + .khz = parport_khz, + .speed_div = parport_speed_div, + .speed = parport_speed, + .execute_queue = bitbang_execute_queue, +};