scan_field_t -> struct scan_field
[fw/openocd] / src / jtag / bitq.c
index 4e53bc5507e5f95e33dffa3271beebd0b7ad950e..8ddde81396d9dd1dd830ff392adad3e81571cee5 100644 (file)
-/***************************************************************************\r
- *   Copyright (C) 2007 by Pavel Chromy                                    *\r
- *   chromy@asix.cz                                                        *\r
- *                                                                         *\r
- *   This program is free software; you can redistribute it and/or modify  *\r
- *   it under the terms of the GNU General Public License as published by  *\r
- *   the Free Software Foundation; either version 2 of the License, or     *\r
- *   (at your option) any later version.                                   *\r
- *                                                                         *\r
- *   This program is distributed in the hope that it will be useful,       *\r
- *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *\r
- *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *\r
- *   GNU General Public License for more details.                          *\r
- *                                                                         *\r
- *   You should have received a copy of the GNU General Public License     *\r
- *   along with this program; if not, write to the                         *\r
- *   Free Software Foundation, Inc.,                                       *\r
- *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *\r
- ***************************************************************************/\r
-#ifdef HAVE_CONFIG_H\r
-#include "config.h"\r
-#endif\r
-\r
-#include "bitq.h"\r
-\r
-/* project specific includes */\r
-#include "log.h"\r
-#include "types.h"\r
-#include "jtag.h"\r
-#include "configuration.h"\r
-\r
-/* system includes */\r
-#include <string.h>\r
-#include <stdlib.h>\r
-#include <unistd.h>\r
-\r
-#include <sys/time.h>\r
-#include <time.h>\r
-\r
-\r
-bitq_interface_t *bitq_interface; /* low level bit queue interface */\r
-\r
-bitq_state_t bitq_in_state; /* state of input queue */\r
-\r
-u8 *bitq_in_buffer; /* buffer dynamically reallocated as needed */\r
-unsigned long bitq_in_bufsize=32; /* min. buffer size */\r
-\r
-\r
-/*\r
- * input queue processing does not use jtag_read_buffer() to avoid unnecessary overhead\r
- * also the buffer for incomming data is reallocated only if necessary\r
- * no parameters, makes use of stored state information\r
- */\r
-void bitq_in_proc(void)\r
-{\r
-       /* static information preserved between calls to increase performance */\r
-       static u8 *in_buff; /* pointer to buffer for scanned data */\r
-       static int in_idx; /* index of byte being scanned */\r
-       static u8 in_mask; /* mask of next bit to be scanned */\r
-\r
-       scan_field_t *field;\r
-       int tdo;\r
-\r
-       /* loop through the queue */\r
-       while (bitq_in_state.cmd) {\r
-               /* only JTAG_SCAN command may return data */\r
-               if (bitq_in_state.cmd->type==JTAG_SCAN) {\r
-                       /* loop through the fields */\r
-                       while (bitq_in_state.field_idx<bitq_in_state.cmd->cmd.scan->num_fields) {\r
-\r
-                               field=&bitq_in_state.cmd->cmd.scan->fields[bitq_in_state.field_idx];\r
-                               if ( field->in_value || field->in_handler) {\r
-\r
-                                       if (bitq_in_state.bit_pos==0) {\r
-                                               /* initialize field scanning */\r
-                                               in_mask=0x01;\r
-                                               in_idx=0;\r
-                                               if (field->in_value) in_buff=field->in_value;\r
-                                               else {\r
-                                                       /* buffer reallocation needed? */\r
-                                                       if (field->num_bits>bitq_in_bufsize*8) {\r
-                                                               /* buffer previously allocated? */\r
-                                                               if (bitq_in_buffer!=NULL) {\r
-                                                                       /* free it */\r
-                                                                       free(bitq_in_buffer);\r
-                                                                       bitq_in_buffer=NULL;\r
-                                                               }\r
-                                                               /* double the buffer size until it fits */\r
-                                                               while (field->num_bits>bitq_in_bufsize*8) bitq_in_bufsize*=2;\r
-                                                       }\r
-                                                       /* if necessary, allocate buffer and check for malloc error */\r
-                                                       if (bitq_in_buffer==NULL && (bitq_in_buffer=malloc(bitq_in_bufsize))==NULL) {\r
-                                                               ERROR("malloc error");\r
-                                                               exit(-1);\r
-                                                       }\r
-                                                       in_buff=(void *)bitq_in_buffer;\r
-                                               }\r
-                                       }\r
-\r
-                                       /* field scanning */\r
-                                       while (bitq_in_state.bit_pos<field->num_bits) {\r
-                                               if ((tdo=bitq_interface->in())<0) {\r
-#ifdef _DEBUG_JTAG_IO_\r
-                                                       DEBUG("bitq in EOF");\r
-#endif\r
-                                                       return;\r
-                                               }\r
-                                               if (in_mask==0x01) in_buff[in_idx]=0;\r
-                                               if (tdo) in_buff[in_idx]|=in_mask;\r
-                                               if (in_mask==0x80) {\r
-                                                       in_mask=0x01;\r
-                                                       in_idx++;\r
-                                               }\r
-                                               else in_mask<<=1;\r
-                                               bitq_in_state.bit_pos++;\r
-                                       }\r
-\r
-\r
-                                       if (field->in_handler && bitq_in_state.status==ERROR_OK) {\r
-                                               bitq_in_state.status=(*field->in_handler)(in_buff, field->in_handler_priv, field);\r
-                                       }\r
-\r
-                               }\r
-\r
-                               bitq_in_state.field_idx++; /* advance to next field */\r
-                               bitq_in_state.bit_pos=0; /* start next field from the first bit */\r
-                       }\r
-\r
-               }\r
-               bitq_in_state.cmd=bitq_in_state.cmd->next; /* advance to next command */\r
-               bitq_in_state.field_idx=0; /* preselect first field */\r
-       }\r
-}\r
-\r
-\r
-\r
-void bitq_io(int tms, int tdi, int tdo_req)\r
-{\r
-       bitq_interface->out(tms, tdi, tdo_req);\r
-       /* check and process the input queue */\r
-       if (bitq_interface->in_rdy()) bitq_in_proc();\r
-}\r
-\r
-\r
-void bitq_end_state(enum tap_state state)\r
-{\r
-       if (state==-1) return;\r
-       if (tap_move_map[state]==-1) {\r
-               ERROR("BUG: %i is not a valid end state", state);\r
-               exit(-1);\r
-       }\r
-       end_state = state;\r
-}\r
-\r
-\r
-void bitq_state_move(enum tap_state new_state)\r
-{\r
-       int i=0;\r
-       u8 tms_scan;\r
-\r
-       if (tap_move_map[cur_state]==-1 || tap_move_map[new_state]==-1) {\r
-               ERROR("TAP move from or to unstable state");\r
-               exit(-1);\r
-       }\r
-\r
-       tms_scan=TAP_MOVE(cur_state, new_state);\r
-\r
-       for (i=0; i<7; i++) {\r
-               bitq_io(tms_scan&1, 0, 0);\r
-               tms_scan>>=1;\r
-       }\r
-\r
-       cur_state = new_state;\r
-}\r
-\r
-\r
-void bitq_path_move(pathmove_command_t *cmd)\r
-{\r
-       int i;\r
-\r
-       for (i=0; i<=cmd->num_states; i++) {\r
-               if (tap_transitions[cur_state].low == cmd->path[i]) bitq_io(0, 0, 0);\r
-               else if (tap_transitions[cur_state].high == cmd->path[i]) bitq_io(1, 0, 0);\r
-               else {\r
-                       ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_strings[cur_state], tap_state_strings[cmd->path[i]]);\r
-                       exit(-1);\r
-               }\r
-\r
-               cur_state = cmd->path[i];\r
-       }\r
-\r
-       end_state = cur_state;\r
-}\r
-\r
-\r
-void bitq_runtest(int num_cycles)\r
-{\r
-       int i;\r
-\r
-       /* only do a state_move when we're not already in RTI */\r
-       if (cur_state != TAP_RTI) bitq_state_move(TAP_RTI);\r
-\r
-       /* execute num_cycles */\r
-       for (i = 0; i < num_cycles; i++)\r
-               bitq_io(0, 0, 0);\r
-\r
-       /* finish in end_state */\r
-       if (cur_state != end_state) bitq_state_move(end_state);\r
-}\r
-\r
-\r
-void bitq_scan_field(scan_field_t *field, int pause)\r
-{\r
-       int bit_cnt;\r
-       int tdo_req;\r
-\r
-       u8 *out_ptr;\r
-       u8 out_mask;\r
-\r
-       if ( field->in_value || field->in_handler) tdo_req=1;\r
-       else tdo_req=0;\r
-\r
-       if (field->out_value==NULL) {\r
-               /* just send zeros and request data from TDO */\r
-               for (bit_cnt=field->num_bits; bit_cnt>1; bit_cnt--)\r
-                       bitq_io(0, 0, tdo_req);\r
-               bitq_io(pause, 0, tdo_req);\r
-       }\r
-       else {\r
-               /* send data, and optionally request TDO */\r
-               out_mask=0x01;\r
-               out_ptr=field->out_value;\r
-               for (bit_cnt=field->num_bits; bit_cnt>1; bit_cnt--) {\r
-                       bitq_io(0, ((*out_ptr)&out_mask)!=0, tdo_req);\r
-                       if (out_mask==0x80) {\r
-                               out_mask=0x01;\r
-                               out_ptr++;\r
-                       }\r
-                       else out_mask<<=1;\r
-               }\r
-               bitq_io(pause, ((*out_ptr)&out_mask)!=0, tdo_req);\r
-       }\r
-\r
-       if (pause) {\r
-               bitq_io(0,0,0);\r
-               if (cur_state==TAP_SI) cur_state=TAP_PI;\r
-               else if (cur_state==TAP_SD) cur_state=TAP_PD;\r
-       }\r
-}\r
-\r
-\r
-void bitq_scan(scan_command_t *cmd)\r
-{\r
-       int i;\r
-\r
-       if (cmd->ir_scan) bitq_state_move(TAP_SI);\r
-       else bitq_state_move(TAP_SD);\r
-\r
-       for (i=0; i < cmd->num_fields-1; i++)\r
-               bitq_scan_field(&cmd->fields[i], 0);\r
-       bitq_scan_field(&cmd->fields[i], 1);\r
-}\r
-\r
-\r
-int bitq_execute_queue(void)\r
-{\r
-       jtag_command_t *cmd = jtag_command_queue; /* currently processed command */\r
-\r
-       bitq_in_state.cmd = jtag_command_queue;\r
-       bitq_in_state.field_idx = 0;\r
-       bitq_in_state.bit_pos = 0;\r
-       bitq_in_state.status = ERROR_OK;\r
-\r
-       while (cmd) {\r
-\r
-               switch (cmd->type) {\r
-\r
-                       case JTAG_END_STATE:\r
-#ifdef _DEBUG_JTAG_IO_\r
-                               DEBUG("end_state: %i", cmd->cmd.end_state->end_state);\r
-#endif\r
-                               bitq_end_state(cmd->cmd.end_state->end_state);\r
-                               break;\r
-\r
-                       case JTAG_RESET:\r
-#ifdef _DEBUG_JTAG_IO_\r
-                               DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);\r
-#endif\r
-                               bitq_interface->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);\r
-                               if (bitq_interface->in_rdy()) bitq_in_proc();\r
-                               break;\r
-\r
-                       case JTAG_RUNTEST:\r
-#ifdef _DEBUG_JTAG_IO_\r
-                               DEBUG("runtest %i cycles, end in %i", cmd->cmd.runtest->num_cycles, cmd->cmd.runtest->end_state);\r
-#endif\r
-                               bitq_end_state(cmd->cmd.runtest->end_state);\r
-                               bitq_runtest(cmd->cmd.runtest->num_cycles);\r
-                               break;\r
-\r
-                       case JTAG_STATEMOVE:\r
-#ifdef _DEBUG_JTAG_IO_\r
-                               DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);\r
-#endif\r
-                               bitq_end_state(cmd->cmd.statemove->end_state);\r
-                               bitq_state_move(end_state); /* uncoditional TAP move */\r
-                               break;\r
-\r
-                       case JTAG_PATHMOVE:\r
-#ifdef _DEBUG_JTAG_IO_\r
-                               DEBUG("pathmove: %i states, end in %i", cmd->cmd.pathmove->num_states, cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);\r
-#endif\r
-                               bitq_path_move(cmd->cmd.pathmove);\r
-                               break;\r
-\r
-                       case JTAG_SCAN:\r
-#ifdef _DEBUG_JTAG_IO_\r
-                               DEBUG("scan end in %i", cmd->cmd.scan->end_state);\r
-                               if (cmd->cmd.scan->ir_scan) DEBUG("scan ir");\r
-                               else DEBUG("scan dr");\r
-#endif\r
-                               bitq_end_state(cmd->cmd.scan->end_state);\r
-                               bitq_scan(cmd->cmd.scan);\r
-                               if (cur_state != end_state) bitq_state_move(end_state);\r
-                               break;\r
-\r
-                       case JTAG_SLEEP:\r
-#ifdef _DEBUG_JTAG_IO_\r
-                               DEBUG("sleep %i", cmd->cmd.sleep->us);\r
-#endif\r
-                               bitq_interface->sleep(cmd->cmd.sleep->us);\r
-                               if (bitq_interface->in_rdy()) bitq_in_proc();\r
-                               break;\r
-\r
-                       default:\r
-                               ERROR("BUG: unknown JTAG command type encountered");\r
-                               exit(-1);\r
-               }\r
-\r
-               cmd = cmd->next;\r
-       }\r
-\r
-       bitq_interface->flush();\r
-       bitq_in_proc();\r
-\r
-       if (bitq_in_state.cmd) {\r
-               ERROR("missing data from bitq interface");\r
-               return ERROR_JTAG_QUEUE_FAILED;\r
-       }\r
-       if (bitq_interface->in()>=0) {\r
-               ERROR("extra data from bitq interface");\r
-               return ERROR_JTAG_QUEUE_FAILED;\r
-       }\r
-\r
-       return bitq_in_state.status;\r
-}\r
-\r
-\r
-void bitq_cleanup(void)\r
-{\r
-       if (bitq_in_buffer!=NULL)\r
-       {\r
-               free(bitq_in_buffer);\r
-               bitq_in_buffer=NULL;\r
-       }\r
-}\r
+/***************************************************************************
+*   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"
+#include "interface.h"
+
+
+bitq_interface_t* bitq_interface;       /* low level bit queue interface */
+
+static bitq_state_t      bitq_in_state;        /* state of input queue */
+
+static uint8_t* bitq_in_buffer;                     /* buffer dynamically reallocated as needed */
+static int     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 uint8_t*    in_buff;  /* pointer to buffer for scanned data */
+       static int    in_idx;   /* index of byte being scanned */
+       static uint8_t     in_mask;  /* mask of next bit to be scanned */
+
+       struct scan_field* 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_idx < bitq_in_state.cmd->cmd.scan->num_fields)
+                       {
+                               field = &bitq_in_state.cmd->cmd.scan->fields[bitq_in_state.field_idx];
+                               if (field->in_value)
+                               {
+                                       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)
+                                                       {
+                                                               LOG_ERROR("malloc error");
+                                                               exit(-1);
+                                                       }
+                                                       in_buff = (void*) bitq_in_buffer;
+                                               }
+                                       }
+
+                                       /* field scanning */
+                                       while (bitq_in_state.bit_pos < field->num_bits)
+                                       {
+                                               if ((tdo = bitq_interface->in()) < 0)
+                                               {
+#ifdef _DEBUG_JTAG_IO_
+                                                       LOG_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++;
+                                       }
+                               }
+
+                               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(tap_state_t state)
+{
+       if (!tap_is_state_stable(state))
+       {
+               LOG_ERROR("BUG: %i is not a valid end state", state);
+               exit(-1);
+       }
+       tap_set_end_state(state);
+}
+
+
+void bitq_state_move(tap_state_t new_state)
+{
+       int i = 0;
+       uint8_t  tms_scan;
+
+       if (!tap_is_state_stable(tap_get_state()) || !tap_is_state_stable(new_state))
+       {
+               LOG_ERROR("TAP move from or to unstable state");
+               exit(-1);
+       }
+
+       tms_scan = tap_get_tms_path(tap_get_state(), new_state);
+       int tms_count = tap_get_tms_path_len(tap_get_state(), tap_get_end_state());
+
+       for (i = 0; i < tms_count; i++)
+       {
+               bitq_io(tms_scan & 1, 0, 0);
+               tms_scan >>= 1;
+       }
+
+       tap_set_state(new_state);
+}
+
+
+void bitq_path_move(pathmove_command_t* cmd)
+{
+       int i;
+
+       for (i = 0; i <= cmd->num_states; i++)
+       {
+               if (tap_state_transition(tap_get_state(), false) == cmd->path[i])
+                       bitq_io(0, 0, 0);
+               else if (tap_state_transition(tap_get_state(), true) == cmd->path[i])
+                       bitq_io(1, 0, 0);
+               else
+               {
+                       LOG_ERROR("BUG: %s -> %s isn't a valid TAP transition", tap_state_name(
+                                                        tap_get_state()), tap_state_name(cmd->path[i]));
+                       exit(-1);
+               }
+
+               tap_set_state(cmd->path[i]);
+       }
+
+       tap_set_end_state(tap_get_state());
+}
+
+
+void bitq_runtest(int num_cycles)
+{
+       int i;
+
+       /* only do a state_move when we're not already in IDLE */
+       if (tap_get_state() != TAP_IDLE)
+               bitq_state_move(TAP_IDLE);
+
+       /* execute num_cycles */
+       for (i = 0; i < num_cycles; i++)
+               bitq_io(0, 0, 0);
+
+       /* finish in end_state */
+       if (tap_get_state() != tap_get_end_state())
+               bitq_state_move(tap_get_end_state());
+}
+
+
+void bitq_scan_field(struct scan_field* field, int pause)
+{
+       int bit_cnt;
+       int tdo_req;
+
+       uint8_t* out_ptr;
+       uint8_t  out_mask;
+
+       if (field->in_value)
+               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 (tap_get_state() == TAP_IRSHIFT)
+                       tap_set_state(TAP_IRPAUSE);
+               else if (tap_get_state() == TAP_DRSHIFT)
+                       tap_set_state(TAP_DRPAUSE);
+       }
+}
+
+
+void bitq_scan(scan_command_t* cmd)
+{
+       int i;
+
+       if (cmd->ir_scan)
+               bitq_state_move(TAP_IRSHIFT);
+       else
+               bitq_state_move(TAP_DRSHIFT);
+
+       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_RESET:
+#ifdef _DEBUG_JTAG_IO_
+                       LOG_DEBUG("reset trst: %i srst %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+#endif
+                       if ((cmd->cmd.reset->trst == 1) || (cmd->cmd.reset->srst && (jtag_get_reset_config() & RESET_SRST_PULLS_TRST)))
+                       {
+                               tap_set_state(TAP_RESET);
+                       }
+                       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_
+                       LOG_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_
+                       LOG_DEBUG("statemove end in %i", cmd->cmd.statemove->end_state);
+#endif
+                       bitq_end_state(cmd->cmd.statemove->end_state);
+                       bitq_state_move(tap_get_end_state());   /* uncoditional TAP move */
+                       break;
+
+               case JTAG_PATHMOVE:
+#ifdef _DEBUG_JTAG_IO_
+                       LOG_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_
+                       LOG_DEBUG("scan end in %i", cmd->cmd.scan->end_state);
+                       if (cmd->cmd.scan->ir_scan)
+                               LOG_DEBUG("scan ir");
+                       else
+                               LOG_DEBUG("scan dr");
+#endif
+                       bitq_end_state(cmd->cmd.scan->end_state);
+                       bitq_scan(cmd->cmd.scan);
+                       if (tap_get_state() != tap_get_end_state())
+                               bitq_state_move(tap_get_end_state());
+                       break;
+
+               case JTAG_SLEEP:
+#ifdef _DEBUG_JTAG_IO_
+                       LOG_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:
+                       LOG_ERROR("BUG: unknown JTAG command type encountered");
+                       exit(-1);
+               }
+
+               cmd = cmd->next;
+       }
+
+       bitq_interface->flush();
+       bitq_in_proc();
+
+       if (bitq_in_state.cmd)
+       {
+               LOG_ERROR("missing data from bitq interface");
+               return ERROR_JTAG_QUEUE_FAILED;
+       }
+       if (bitq_interface->in() >= 0)
+       {
+               LOG_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;
+       }
+}