/*************************************************************************** * 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. * ***************************************************************************/ #include "config.h" #include "log.h" #include "jtag.h" #include "bitbang.h" /* system includes */ // -ino: 060521-1036 #ifdef __FreeBSD__ #include #include #include #define ioperm(startport,length,enable)\ i386_set_ioperm((startport), (length), (enable)) #else #include #endif #include #include #include #if PARPORT_USE_PPDEV == 1 #include #include #include #include #endif /* 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 */ } cable_t; cable_t cables[] = { /* name tdo trst tms tck tdi srst o_inv i_inv init */ { "wiggler", 0x80, 0x10, 0x02, 0x04, 0x08, 0x01, 0x01, 0x80, 0x80 }, { "old_amt_wiggler", 0x80, 0x01, 0x02, 0x04, 0x08, 0x10, 0x11, 0x80, 0x80 }, { "chameleon", 0x80, 0x00, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00 }, { "dlc5", 0x10, 0x00, 0x04, 0x02, 0x01, 0x00, 0x00, 0x00, 0x10 }, { "triton", 0x80, 0x08, 0x04, 0x01, 0x02, 0x00, 0x00, 0x80, 0x00 }, { NULL, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 } }; /* configuration */ char* parport_cable; unsigned long parport_port; /* 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); 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); jtag_interface_t parport_interface = { .name = "parport", .execute_queue = bitbang_execute_queue, .support_statemove = 0, .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 }; 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; } void parport_write(int tck, int tms, int tdi) { u8 output; 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; output = dataport_value ^ cable->OUTPUT_INVERT; while (i-- > 0) #if PARPORT_USE_PPDEV == 1 ioctl(device_handle, PPWDATA, &output); #else #ifdef __FreeBSD__ outb(dataport, output); #else outb(output, dataport); #endif #endif } /* (1) assert or (0) deassert reset lines */ void parport_reset(int trst, int srst) { u8 output; 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; output = dataport_value ^ cable->OUTPUT_INVERT; #if PARPORT_USE_PPDEV == 1 ioctl(device_handle, PPWDATA, &output); #else #ifdef __FreeBSD__ outb(dataport, output); #else outb(output, dataport); #endif #endif } 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); return ERROR_OK; } 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; } snprintf(buffer, 256, "/dev/parport%d", parport_port); device_handle = open(buffer, O_WRONLY); 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; } 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; } #else if (parport_port == 0) { parport_port = 0x378; WARNING("No parport port specified, using default '0x378' (LPT1)"); } dataport = parport_port; statusport = parport_port + 1; if (ioperm(dataport, 3, 1) != 0) { ERROR("missing privileges for direct i/o"); return ERROR_JTAG_INIT_FAILED; } #endif parport_reset(0, 0); parport_write(0, 0, 0); bitbang_interface = &parport_bitbang; return ERROR_OK; } int parport_quit(void) { 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; }