X-Git-Url: https://review.openocd.org/gitweb?p=openocd.git;a=blobdiff_plain;f=src%2Fjtag%2Fbitq.c;h=7c47b8e8cd3e8aa636fdddf470af7e755fadc068;hp=4e53bc5507e5f95e33dffa3271beebd0b7ad950e;hb=3d6bcf07921753141a3905ee5619724573460cb3;hpb=7f1944a47823fc48eef244257b80675a226f86b8 diff --git a/src/jtag/bitq.c b/src/jtag/bitq.c index 4e53bc5507..7c47b8e8cd 100644 --- a/src/jtag/bitq.c +++ b/src/jtag/bitq.c @@ -1,366 +1,366 @@ -/*************************************************************************** - * Copyright (C) 2007 by Pavel Chromy * - * chromy@asix.cz * - * * - * 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 "bitq.h" - -/* project specific includes */ -#include "log.h" -#include "types.h" -#include "jtag.h" -#include "configuration.h" - -/* system includes */ -#include -#include -#include - -#include -#include - - -bitq_interface_t *bitq_interface; /* low level bit queue interface */ - -bitq_state_t bitq_in_state; /* state of input queue */ - -u8 *bitq_in_buffer; /* buffer dynamically reallocated as needed */ -unsigned long bitq_in_bufsize=32; /* min. buffer size */ - - -/* - * input queue processing does not use jtag_read_buffer() to avoid unnecessary overhead - * also the buffer for incomming data is reallocated only if necessary - * no parameters, makes use of stored state information - */ -void bitq_in_proc(void) -{ - /* static information preserved between calls to increase performance */ - static u8 *in_buff; /* pointer to buffer for scanned data */ - static int in_idx; /* index of byte being scanned */ - static u8 in_mask; /* mask of next bit to be scanned */ - - scan_field_t *field; - int tdo; - - /* loop through the queue */ - while (bitq_in_state.cmd) { - /* only JTAG_SCAN command may return data */ - if (bitq_in_state.cmd->type==JTAG_SCAN) { - /* loop through the fields */ - while (bitq_in_state.field_idxcmd.scan->num_fields) { - - field=&bitq_in_state.cmd->cmd.scan->fields[bitq_in_state.field_idx]; - if ( field->in_value || field->in_handler) { - - if (bitq_in_state.bit_pos==0) { - /* initialize field scanning */ - in_mask=0x01; - in_idx=0; - if (field->in_value) in_buff=field->in_value; - else { - /* buffer reallocation needed? */ - if (field->num_bits>bitq_in_bufsize*8) { - /* buffer previously allocated? */ - if (bitq_in_buffer!=NULL) { - /* free it */ - free(bitq_in_buffer); - bitq_in_buffer=NULL; - } - /* double the buffer size until it fits */ - while (field->num_bits>bitq_in_bufsize*8) bitq_in_bufsize*=2; - } - /* if necessary, allocate buffer and check for malloc error */ - if (bitq_in_buffer==NULL && (bitq_in_buffer=malloc(bitq_in_bufsize))==NULL) { - ERROR("malloc error"); - exit(-1); - } - in_buff=(void *)bitq_in_buffer; - } - } - - /* field scanning */ - while (bitq_in_state.bit_posnum_bits) { - if ((tdo=bitq_interface->in())<0) { -#ifdef _DEBUG_JTAG_IO_ - DEBUG("bitq in EOF"); -#endif - return; - } - if (in_mask==0x01) in_buff[in_idx]=0; - if (tdo) in_buff[in_idx]|=in_mask; - if (in_mask==0x80) { - in_mask=0x01; - in_idx++; - } - else in_mask<<=1; - bitq_in_state.bit_pos++; - } - - - if (field->in_handler && bitq_in_state.status==ERROR_OK) { - bitq_in_state.status=(*field->in_handler)(in_buff, field->in_handler_priv, field); - } - - } - - bitq_in_state.field_idx++; /* advance to next field */ - bitq_in_state.bit_pos=0; /* start next field from the first bit */ - } - - } - bitq_in_state.cmd=bitq_in_state.cmd->next; /* advance to next command */ - bitq_in_state.field_idx=0; /* preselect first field */ - } -} - - - -void bitq_io(int tms, int tdi, int tdo_req) -{ - bitq_interface->out(tms, tdi, tdo_req); - /* check and process the input queue */ - if (bitq_interface->in_rdy()) bitq_in_proc(); -} - - -void bitq_end_state(enum tap_state state) -{ - if (state==-1) return; - if (tap_move_map[state]==-1) { - ERROR("BUG: %i is not a valid end state", state); - exit(-1); - } - end_state = state; -} - - -void bitq_state_move(enum tap_state new_state) -{ - int i=0; - u8 tms_scan; - - if (tap_move_map[cur_state]==-1 || tap_move_map[new_state]==-1) { - ERROR("TAP move from or to unstable state"); - exit(-1); - } - - tms_scan=TAP_MOVE(cur_state, new_state); - - for (i=0; i<7; i++) { - bitq_io(tms_scan&1, 0, 0); - tms_scan>>=1; - } - - cur_state = new_state; -} - - -void bitq_path_move(pathmove_command_t *cmd) -{ - int i; - - for (i=0; i<=cmd->num_states; i++) { - if (tap_transitions[cur_state].low == cmd->path[i]) bitq_io(0, 0, 0); - else if (tap_transitions[cur_state].high == cmd->path[i]) bitq_io(1, 0, 0); - else { - ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[i]]); - exit(-1); - } - - cur_state = cmd->path[i]; - } - - end_state = cur_state; -} - - -void bitq_runtest(int num_cycles) -{ - int i; - - /* only do a state_move when we're not already in RTI */ - if (cur_state != TAP_RTI) bitq_state_move(TAP_RTI); - - /* execute num_cycles */ - for (i = 0; i < num_cycles; i++) - bitq_io(0, 0, 0); - - /* finish in end_state */ - if (cur_state != end_state) bitq_state_move(end_state); -} - - -void bitq_scan_field(scan_field_t *field, int pause) -{ - int bit_cnt; - int tdo_req; - - u8 *out_ptr; - u8 out_mask; - - if ( field->in_value || field->in_handler) tdo_req=1; - else tdo_req=0; - - if (field->out_value==NULL) { - /* just send zeros and request data from TDO */ - for (bit_cnt=field->num_bits; bit_cnt>1; bit_cnt--) - bitq_io(0, 0, tdo_req); - bitq_io(pause, 0, tdo_req); - } - else { - /* send data, and optionally request TDO */ - out_mask=0x01; - out_ptr=field->out_value; - for (bit_cnt=field->num_bits; bit_cnt>1; bit_cnt--) { - bitq_io(0, ((*out_ptr)&out_mask)!=0, tdo_req); - if (out_mask==0x80) { - out_mask=0x01; - out_ptr++; - } - else out_mask<<=1; - } - bitq_io(pause, ((*out_ptr)&out_mask)!=0, tdo_req); - } - - if (pause) { - bitq_io(0,0,0); - if (cur_state==TAP_SI) cur_state=TAP_PI; - else if (cur_state==TAP_SD) cur_state=TAP_PD; - } -} - - -void bitq_scan(scan_command_t *cmd) -{ - int i; - - if (cmd->ir_scan) bitq_state_move(TAP_SI); - else bitq_state_move(TAP_SD); - - for (i=0; i < cmd->num_fields-1; i++) - bitq_scan_field(&cmd->fields[i], 0); - bitq_scan_field(&cmd->fields[i], 1); -} - - -int bitq_execute_queue(void) -{ - jtag_command_t *cmd = jtag_command_queue; /* currently processed command */ - - bitq_in_state.cmd = jtag_command_queue; - bitq_in_state.field_idx = 0; - bitq_in_state.bit_pos = 0; - bitq_in_state.status = ERROR_OK; - - while (cmd) { - - switch (cmd->type) { - - case JTAG_END_STATE: -#ifdef _DEBUG_JTAG_IO_ - DEBUG("end_state: %i", cmd->cmd.end_state->end_state); -#endif - bitq_end_state(cmd->cmd.end_state->end_state); - break; - - case JTAG_RESET: -#ifdef _DEBUG_JTAG_IO_ - DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst); -#endif - bitq_interface->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst); - if (bitq_interface->in_rdy()) bitq_in_proc(); - break; - - case JTAG_RUNTEST: -#ifdef _DEBUG_JTAG_IO_ - DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state); -#endif - bitq_end_state(cmd->cmd.runtest->end_state); - bitq_runtest(cmd->cmd.runtest->num_cycles); - break; - - case JTAG_STATEMOVE: -#ifdef _DEBUG_JTAG_IO_ - DEBUG("statemove end in %i", cmd->cmd.statemove->end_state); -#endif - bitq_end_state(cmd->cmd.statemove->end_state); - bitq_state_move(end_state); /* uncoditional TAP move */ - break; - - case JTAG_PATHMOVE: -#ifdef _DEBUG_JTAG_IO_ - DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]); -#endif - bitq_path_move(cmd->cmd.pathmove); - break; - - case JTAG_SCAN: -#ifdef _DEBUG_JTAG_IO_ - DEBUG("scan end in %i", cmd->cmd.scan->end_state); - if (cmd->cmd.scan->ir_scan) DEBUG("scan ir"); - else DEBUG("scan dr"); -#endif - bitq_end_state(cmd->cmd.scan->end_state); - bitq_scan(cmd->cmd.scan); - if (cur_state != end_state) bitq_state_move(end_state); - break; - - case JTAG_SLEEP: -#ifdef _DEBUG_JTAG_IO_ - DEBUG("sleep %i", cmd->cmd.sleep->us); -#endif - bitq_interface->sleep(cmd->cmd.sleep->us); - if (bitq_interface->in_rdy()) bitq_in_proc(); - break; - - default: - ERROR("BUG: unknown JTAG command type encountered"); - exit(-1); - } - - cmd = cmd->next; - } - - bitq_interface->flush(); - bitq_in_proc(); - - if (bitq_in_state.cmd) { - ERROR("missing data from bitq interface"); - return ERROR_JTAG_QUEUE_FAILED; - } - if (bitq_interface->in()>=0) { - ERROR("extra data from bitq interface"); - return ERROR_JTAG_QUEUE_FAILED; - } - - return bitq_in_state.status; -} - - -void bitq_cleanup(void) -{ - if (bitq_in_buffer!=NULL) - { - free(bitq_in_buffer); - bitq_in_buffer=NULL; - } -} +/*************************************************************************** + * Copyright (C) 2007 by Pavel Chromy * + * chromy@asix.cz * + * * + * 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 "bitq.h" + +/* project specific includes */ +#include "log.h" +#include "types.h" +#include "jtag.h" +#include "configuration.h" + +/* system includes */ +#include +#include +#include + +#include +#include + + +bitq_interface_t *bitq_interface; /* low level bit queue interface */ + +bitq_state_t bitq_in_state; /* state of input queue */ + +u8 *bitq_in_buffer; /* buffer dynamically reallocated as needed */ +unsigned long bitq_in_bufsize=32; /* min. buffer size */ + + +/* + * input queue processing does not use jtag_read_buffer() to avoid unnecessary overhead + * also the buffer for incomming data is reallocated only if necessary + * no parameters, makes use of stored state information + */ +void bitq_in_proc(void) +{ + /* static information preserved between calls to increase performance */ + static u8 *in_buff; /* pointer to buffer for scanned data */ + static int in_idx; /* index of byte being scanned */ + static u8 in_mask; /* mask of next bit to be scanned */ + + scan_field_t *field; + int tdo; + + /* loop through the queue */ + while (bitq_in_state.cmd) { + /* only JTAG_SCAN command may return data */ + if (bitq_in_state.cmd->type==JTAG_SCAN) { + /* loop through the fields */ + while (bitq_in_state.field_idxcmd.scan->num_fields) { + + field=&bitq_in_state.cmd->cmd.scan->fields[bitq_in_state.field_idx]; + if ( field->in_value || field->in_handler) { + + if (bitq_in_state.bit_pos==0) { + /* initialize field scanning */ + in_mask=0x01; + in_idx=0; + if (field->in_value) in_buff=field->in_value; + else { + /* buffer reallocation needed? */ + if (field->num_bits>bitq_in_bufsize*8) { + /* buffer previously allocated? */ + if (bitq_in_buffer!=NULL) { + /* free it */ + free(bitq_in_buffer); + bitq_in_buffer=NULL; + } + /* double the buffer size until it fits */ + while (field->num_bits>bitq_in_bufsize*8) bitq_in_bufsize*=2; + } + /* if necessary, allocate buffer and check for malloc error */ + if (bitq_in_buffer==NULL && (bitq_in_buffer=malloc(bitq_in_bufsize))==NULL) { + ERROR("malloc error"); + exit(-1); + } + in_buff=(void *)bitq_in_buffer; + } + } + + /* field scanning */ + while (bitq_in_state.bit_posnum_bits) { + if ((tdo=bitq_interface->in())<0) { +#ifdef _DEBUG_JTAG_IO_ + DEBUG("bitq in EOF"); +#endif + return; + } + if (in_mask==0x01) in_buff[in_idx]=0; + if (tdo) in_buff[in_idx]|=in_mask; + if (in_mask==0x80) { + in_mask=0x01; + in_idx++; + } + else in_mask<<=1; + bitq_in_state.bit_pos++; + } + + + if (field->in_handler && bitq_in_state.status==ERROR_OK) { + bitq_in_state.status=(*field->in_handler)(in_buff, field->in_handler_priv, field); + } + + } + + bitq_in_state.field_idx++; /* advance to next field */ + bitq_in_state.bit_pos=0; /* start next field from the first bit */ + } + + } + bitq_in_state.cmd=bitq_in_state.cmd->next; /* advance to next command */ + bitq_in_state.field_idx=0; /* preselect first field */ + } +} + + + +void bitq_io(int tms, int tdi, int tdo_req) +{ + bitq_interface->out(tms, tdi, tdo_req); + /* check and process the input queue */ + if (bitq_interface->in_rdy()) bitq_in_proc(); +} + + +void bitq_end_state(enum tap_state state) +{ + if (state==-1) return; + if (tap_move_map[state]==-1) { + ERROR("BUG: %i is not a valid end state", state); + exit(-1); + } + end_state = state; +} + + +void bitq_state_move(enum tap_state new_state) +{ + int i=0; + u8 tms_scan; + + if (tap_move_map[cur_state]==-1 || tap_move_map[new_state]==-1) { + ERROR("TAP move from or to unstable state"); + exit(-1); + } + + tms_scan=TAP_MOVE(cur_state, new_state); + + for (i=0; i<7; i++) { + bitq_io(tms_scan&1, 0, 0); + tms_scan>>=1; + } + + cur_state = new_state; +} + + +void bitq_path_move(pathmove_command_t *cmd) +{ + int i; + + for (i=0; i<=cmd->num_states; i++) { + if (tap_transitions[cur_state].low == cmd->path[i]) bitq_io(0, 0, 0); + else if (tap_transitions[cur_state].high == cmd->path[i]) bitq_io(1, 0, 0); + else { + ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[i]]); + exit(-1); + } + + cur_state = cmd->path[i]; + } + + end_state = cur_state; +} + + +void bitq_runtest(int num_cycles) +{ + int i; + + /* only do a state_move when we're not already in RTI */ + if (cur_state != TAP_RTI) bitq_state_move(TAP_RTI); + + /* execute num_cycles */ + for (i = 0; i < num_cycles; i++) + bitq_io(0, 0, 0); + + /* finish in end_state */ + if (cur_state != end_state) bitq_state_move(end_state); +} + + +void bitq_scan_field(scan_field_t *field, int pause) +{ + int bit_cnt; + int tdo_req; + + u8 *out_ptr; + u8 out_mask; + + if ( field->in_value || field->in_handler) tdo_req=1; + else tdo_req=0; + + if (field->out_value==NULL) { + /* just send zeros and request data from TDO */ + for (bit_cnt=field->num_bits; bit_cnt>1; bit_cnt--) + bitq_io(0, 0, tdo_req); + bitq_io(pause, 0, tdo_req); + } + else { + /* send data, and optionally request TDO */ + out_mask=0x01; + out_ptr=field->out_value; + for (bit_cnt=field->num_bits; bit_cnt>1; bit_cnt--) { + bitq_io(0, ((*out_ptr)&out_mask)!=0, tdo_req); + if (out_mask==0x80) { + out_mask=0x01; + out_ptr++; + } + else out_mask<<=1; + } + bitq_io(pause, ((*out_ptr)&out_mask)!=0, tdo_req); + } + + if (pause) { + bitq_io(0,0,0); + if (cur_state==TAP_SI) cur_state=TAP_PI; + else if (cur_state==TAP_SD) cur_state=TAP_PD; + } +} + + +void bitq_scan(scan_command_t *cmd) +{ + int i; + + if (cmd->ir_scan) bitq_state_move(TAP_SI); + else bitq_state_move(TAP_SD); + + for (i=0; i < cmd->num_fields-1; i++) + bitq_scan_field(&cmd->fields[i], 0); + bitq_scan_field(&cmd->fields[i], 1); +} + + +int bitq_execute_queue(void) +{ + jtag_command_t *cmd = jtag_command_queue; /* currently processed command */ + + bitq_in_state.cmd = jtag_command_queue; + bitq_in_state.field_idx = 0; + bitq_in_state.bit_pos = 0; + bitq_in_state.status = ERROR_OK; + + while (cmd) { + + switch (cmd->type) { + + case JTAG_END_STATE: +#ifdef _DEBUG_JTAG_IO_ + DEBUG("end_state: %i", cmd->cmd.end_state->end_state); +#endif + bitq_end_state(cmd->cmd.end_state->end_state); + break; + + case JTAG_RESET: +#ifdef _DEBUG_JTAG_IO_ + DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst); +#endif + bitq_interface->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst); + if (bitq_interface->in_rdy()) bitq_in_proc(); + break; + + case JTAG_RUNTEST: +#ifdef _DEBUG_JTAG_IO_ + DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state); +#endif + bitq_end_state(cmd->cmd.runtest->end_state); + bitq_runtest(cmd->cmd.runtest->num_cycles); + break; + + case JTAG_STATEMOVE: +#ifdef _DEBUG_JTAG_IO_ + DEBUG("statemove end in %i", cmd->cmd.statemove->end_state); +#endif + bitq_end_state(cmd->cmd.statemove->end_state); + bitq_state_move(end_state); /* uncoditional TAP move */ + break; + + case JTAG_PATHMOVE: +#ifdef _DEBUG_JTAG_IO_ + DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]); +#endif + bitq_path_move(cmd->cmd.pathmove); + break; + + case JTAG_SCAN: +#ifdef _DEBUG_JTAG_IO_ + DEBUG("scan end in %i", cmd->cmd.scan->end_state); + if (cmd->cmd.scan->ir_scan) DEBUG("scan ir"); + else DEBUG("scan dr"); +#endif + bitq_end_state(cmd->cmd.scan->end_state); + bitq_scan(cmd->cmd.scan); + if (cur_state != end_state) bitq_state_move(end_state); + break; + + case JTAG_SLEEP: +#ifdef _DEBUG_JTAG_IO_ + DEBUG("sleep %i", cmd->cmd.sleep->us); +#endif + bitq_interface->sleep(cmd->cmd.sleep->us); + if (bitq_interface->in_rdy()) bitq_in_proc(); + break; + + default: + ERROR("BUG: unknown JTAG command type encountered"); + exit(-1); + } + + cmd = cmd->next; + } + + bitq_interface->flush(); + bitq_in_proc(); + + if (bitq_in_state.cmd) { + ERROR("missing data from bitq interface"); + return ERROR_JTAG_QUEUE_FAILED; + } + if (bitq_interface->in()>=0) { + ERROR("extra data from bitq interface"); + return ERROR_JTAG_QUEUE_FAILED; + } + + return bitq_in_state.status; +} + + +void bitq_cleanup(void) +{ + if (bitq_in_buffer!=NULL) + { + free(bitq_in_buffer); + bitq_in_buffer=NULL; + } +}