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[Openocd-svn] r1526 - trunk/src/jtag
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From: <ml...@ma...> - 2009-04-25 02:54:36
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Author: mlu
Date: 2009-04-25 02:54:21 +0200 (Sat, 25 Apr 2009)
New Revision: 1526
Modified:
trunk/src/jtag/ft2232.c
Log:
Break ft2232_execute_quie into smaller functions, follows restructure of jlink.c
Modified: trunk/src/jtag/ft2232.c
===================================================================
--- trunk/src/jtag/ft2232.c 2009-04-24 18:10:04 UTC (rev 1525)
+++ trunk/src/jtag/ft2232.c 2009-04-25 00:54:21 UTC (rev 1526)
@@ -423,8 +423,8 @@
int scan_size;
enum scan_type type;
int retval;
- u32 bytes_written;
- u32 bytes_read;
+ u32 bytes_written=0;
+ u32 bytes_read=0;
#ifdef _DEBUG_USB_IO_
struct timeval start, inter, inter2, end;
@@ -1267,246 +1267,328 @@
LOG_DEBUG("trst: %i, srst: %i, high_output: 0x%2.2x, high_direction: 0x%2.2x", trst, srst, high_output, high_direction);
}
-static int ft2232_execute_queue()
+static int ft2232_execute_end_state(jtag_command_t *cmd)
{
- jtag_command_t* cmd = jtag_command_queue; /* currently processed command */
- u8* buffer;
- int scan_size; /* size of IR or DR scan */
- enum scan_type type;
- int i;
- int predicted_size = 0;
- int retval;
+ int retval;
+ retval = ERROR_OK;
- first_unsent = cmd; /* next command that has to be sent */
- require_send = 0;
+ DEBUG_JTAG_IO("end_state: %i", cmd->cmd.end_state->end_state);
- /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
- * that wasn't handled by a caller-provided error handler
- */
- retval = ERROR_OK;
+ if (cmd->cmd.end_state->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.end_state->end_state);
- ft2232_buffer_size = 0;
- ft2232_expect_read = 0;
+ return retval;
+}
- /* blink, if the current layout has that feature */
- if (layout->blink)
- layout->blink();
- while (cmd)
+static int ft2232_execute_runtest(jtag_command_t *cmd)
+{
+ int retval;
+ int i;
+ int predicted_size = 0;
+ retval = ERROR_OK;
+
+ DEBUG_JTAG_IO("runtest %i cycles, end in %i",
+ cmd->cmd.runtest->num_cycles,
+ cmd->cmd.runtest->end_state);
+ /* only send the maximum buffer size that FT2232C can handle */
+ predicted_size = 0;
+ if (tap_get_state() != TAP_IDLE)
+ predicted_size += 3;
+ predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
+ if ( (cmd->cmd.runtest->end_state != TAP_INVALID) && (cmd->cmd.runtest->end_state != TAP_IDLE) )
+ predicted_size += 3;
+ if ( (cmd->cmd.runtest->end_state == TAP_INVALID) && (tap_get_end_state() != TAP_IDLE) )
+ predicted_size += 3;
+ if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
{
- switch (cmd->type)
- {
- case JTAG_END_STATE:
- if (cmd->cmd.end_state->end_state != TAP_INVALID)
- ft2232_end_state(cmd->cmd.end_state->end_state);
- break;
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+ if (tap_get_state() != TAP_IDLE)
+ {
+ /* command "Clock Data to TMS/CS Pin (no Read)" */
+ BUFFER_ADD = 0x4b;
+ BUFFER_ADD = 0x6; /* scan 7 bits */
- case JTAG_RESET:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 3;
- if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
+ /* TMS data bits */
+ BUFFER_ADD = tap_get_tms_path(tap_get_state(), TAP_IDLE);
+ tap_set_state(TAP_IDLE);
+ require_send = 1;
+ }
+ i = cmd->cmd.runtest->num_cycles;
+ while (i > 0)
+ {
+ /* command "Clock Data to TMS/CS Pin (no Read)" */
+ BUFFER_ADD = 0x4b;
- if ( (cmd->cmd.reset->trst == 1) || ( cmd->cmd.reset->srst && (jtag_reset_config & RESET_SRST_PULLS_TRST) ) )
- {
- tap_set_state(TAP_RESET);
- }
- layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
- require_send = 1;
+ /* scan 7 bits */
+ BUFFER_ADD = (i > 7) ? 6 : (i - 1);
+ /* TMS data bits */
+ BUFFER_ADD = 0x0;
+ tap_set_state(TAP_IDLE);
+ i -= (i > 7) ? 7 : i;
+ /* LOG_DEBUG("added TMS scan (no read)"); */
+ }
+
+ if (cmd->cmd.runtest->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.runtest->end_state);
+
+ if ( tap_get_state() != tap_get_end_state() )
+ {
+ /* command "Clock Data to TMS/CS Pin (no Read)" */
+ BUFFER_ADD = 0x4b;
+ /* scan 7 bit */
+ BUFFER_ADD = 0x6;
+ /* TMS data bits */
+ BUFFER_ADD = tap_get_tms_path( tap_get_state(), tap_get_end_state() );
+ tap_set_state( tap_get_end_state() );
+ /* LOG_DEBUG("added TMS scan (no read)"); */
+ }
+ require_send = 1;
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+ LOG_DEBUG( "runtest: %i, end in %s", cmd->cmd.runtest->num_cycles, tap_state_name( tap_get_end_state() ) );
#endif
- break;
- case JTAG_RUNTEST:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 0;
- if (tap_get_state() != TAP_IDLE)
- predicted_size += 3;
- predicted_size += 3 * CEIL(cmd->cmd.runtest->num_cycles, 7);
- if ( (cmd->cmd.runtest->end_state != TAP_INVALID) && (cmd->cmd.runtest->end_state != TAP_IDLE) )
- predicted_size += 3;
- if ( (cmd->cmd.runtest->end_state == TAP_INVALID) && (tap_get_end_state() != TAP_IDLE) )
- predicted_size += 3;
- if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
- if (tap_get_state() != TAP_IDLE)
- {
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
- BUFFER_ADD = 0x6; /* scan 7 bits */
+ return retval;
+}
- /* TMS data bits */
- BUFFER_ADD = tap_get_tms_path(tap_get_state(), TAP_IDLE);
- tap_set_state(TAP_IDLE);
- require_send = 1;
- }
- i = cmd->cmd.runtest->num_cycles;
- while (i > 0)
- {
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
+static int ft2232_execute_statemove(jtag_command_t *cmd)
+{
+ int retval;
+ int predicted_size = 0;
+ retval = ERROR_OK;
- /* scan 7 bits */
- BUFFER_ADD = (i > 7) ? 6 : (i - 1);
+ DEBUG_JTAG_IO("statemove end in %i", cmd->cmd.statemove->end_state);
- /* TMS data bits */
- BUFFER_ADD = 0x0;
- tap_set_state(TAP_IDLE);
- i -= (i > 7) ? 7 : i;
- /* LOG_DEBUG("added TMS scan (no read)"); */
- }
+ /* only send the maximum buffer size that FT2232C can handle */
+ predicted_size = 3;
+ if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+ if (cmd->cmd.statemove->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.statemove->end_state);
- if (cmd->cmd.runtest->end_state != TAP_INVALID)
- ft2232_end_state(cmd->cmd.runtest->end_state);
+ /* command "Clock Data to TMS/CS Pin (no Read)" */
+ BUFFER_ADD = 0x4b;
- if ( tap_get_state() != tap_get_end_state() )
- {
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
- /* scan 7 bit */
- BUFFER_ADD = 0x6;
- /* TMS data bits */
- BUFFER_ADD = tap_get_tms_path( tap_get_state(), tap_get_end_state() );
- tap_set_state( tap_get_end_state() );
- /* LOG_DEBUG("added TMS scan (no read)"); */
- }
- require_send = 1;
+ BUFFER_ADD = 0x6; /* scan 7 bits */
+
+ /* TMS data bits */
+ BUFFER_ADD = tap_get_tms_path( tap_get_state(), tap_get_end_state() );
+ /* LOG_DEBUG("added TMS scan (no read)"); */
+ tap_set_state( tap_get_end_state() );
+ require_send = 1;
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "runtest: %i, end in %s", cmd->cmd.runtest->num_cycles, tap_state_name( tap_get_end_state() ) );
+ LOG_DEBUG( "statemove: %s", tap_state_name( tap_get_end_state() ) );
#endif
- break;
+
+ return retval;
+}
- case JTAG_STATEMOVE:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 3;
- if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
- if (cmd->cmd.statemove->end_state != TAP_INVALID)
- ft2232_end_state(cmd->cmd.statemove->end_state);
+static int ft2232_execute_pathmove(jtag_command_t *cmd)
+{
+ int retval;
+ int predicted_size = 0;
+ retval = ERROR_OK;
- /* command "Clock Data to TMS/CS Pin (no Read)" */
- BUFFER_ADD = 0x4b;
-
- BUFFER_ADD = 0x6; /* scan 7 bits */
-
- /* TMS data bits */
- BUFFER_ADD = tap_get_tms_path( tap_get_state(), tap_get_end_state() );
- /* LOG_DEBUG("added TMS scan (no read)"); */
- tap_set_state( tap_get_end_state() );
- require_send = 1;
+ DEBUG_JTAG_IO("pathmove: %i states, end in %i",
+ cmd->cmd.pathmove->num_states,
+ cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]);
+ /* only send the maximum buffer size that FT2232C can handle */
+ predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
+ if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+ ft2232_add_pathmove(cmd->cmd.pathmove);
+ require_send = 1;
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "statemove: %s", tap_state_name( tap_get_end_state() ) );
+ LOG_DEBUG( "pathmove: %i states, end in %s", cmd->cmd.pathmove->num_states,
+ tap_state_name(cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]) );
#endif
- break;
+ return retval;
+}
- case JTAG_PATHMOVE:
- /* only send the maximum buffer size that FT2232C can handle */
- predicted_size = 3 * CEIL(cmd->cmd.pathmove->num_states, 7);
- if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
- ft2232_add_pathmove(cmd->cmd.pathmove);
- require_send = 1;
+static int ft2232_execute_scan(jtag_command_t *cmd)
+{
+ int retval;
+ u8* buffer;
+ int scan_size; /* size of IR or DR scan */
+ enum scan_type type;
+ int predicted_size = 0;
+ retval = ERROR_OK;
+
+ scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
+ type = jtag_scan_type(cmd->cmd.scan);
+ predicted_size = ft2232_predict_scan_out(scan_size, type);
+ if ( (predicted_size + 1) > FT2232_BUFFER_SIZE )
+ {
+ LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
+ /* unsent commands before this */
+ if (first_unsent != cmd)
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+
+ /* current command */
+ if (cmd->cmd.scan->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.scan->end_state);
+ ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
+ require_send = 0;
+ first_unsent = cmd->next;
+ if (buffer)
+ free(buffer);
+ return retval;
+ }
+ else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)",
+ first_unsent,
+ cmd);
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+ ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
+ /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
+ if (cmd->cmd.scan->end_state != TAP_INVALID)
+ ft2232_end_state(cmd->cmd.scan->end_state);
+ ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
+ require_send = 1;
+ if (buffer)
+ free(buffer);
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "pathmove: %i states, end in %s", cmd->cmd.pathmove->num_states,
- tap_state_name(cmd->cmd.pathmove->path[cmd->cmd.pathmove->num_states - 1]) );
+ LOG_DEBUG( "%s scan, %i bits, end in %s", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
+ tap_state_name( tap_get_end_state() ) );
#endif
- break;
+ return retval;
- case JTAG_SCAN:
- scan_size = jtag_build_buffer(cmd->cmd.scan, &buffer);
- type = jtag_scan_type(cmd->cmd.scan);
- predicted_size = ft2232_predict_scan_out(scan_size, type);
- if ( (predicted_size + 1) > FT2232_BUFFER_SIZE )
- {
- LOG_DEBUG("oversized ft2232 scan (predicted_size > FT2232_BUFFER_SIZE)");
- /* unsent commands before this */
- if (first_unsent != cmd)
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
+}
- /* current command */
- if (cmd->cmd.scan->end_state != TAP_INVALID)
- ft2232_end_state(cmd->cmd.scan->end_state);
- ft2232_large_scan(cmd->cmd.scan, type, buffer, scan_size);
- require_send = 0;
- first_unsent = cmd->next;
- if (buffer)
- free(buffer);
- break;
- }
- else if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
- {
- LOG_DEBUG("ft2232 buffer size reached, sending queued commands (first_unsent: %p, cmd: %p)",
- first_unsent,
- cmd);
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
- require_send = 0;
- first_unsent = cmd;
- }
- ft2232_expect_read += ft2232_predict_scan_in(scan_size, type);
- /* LOG_DEBUG("new read size: %i", ft2232_expect_read); */
- if (cmd->cmd.scan->end_state != TAP_INVALID)
- ft2232_end_state(cmd->cmd.scan->end_state);
- ft2232_add_scan(cmd->cmd.scan->ir_scan, type, buffer, scan_size);
- require_send = 1;
- if (buffer)
- free(buffer);
+static int ft2232_execute_reset(jtag_command_t *cmd)
+{
+ int retval;
+ int predicted_size = 0;
+ retval = ERROR_OK;
+
+ DEBUG_JTAG_IO("reset trst: %i srst %i",
+ cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+
+ /* only send the maximum buffer size that FT2232C can handle */
+ predicted_size = 3;
+ if (ft2232_buffer_size + predicted_size + 1 > FT2232_BUFFER_SIZE)
+ {
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
+ require_send = 0;
+ first_unsent = cmd;
+ }
+
+ if ( (cmd->cmd.reset->trst == 1) || ( cmd->cmd.reset->srst && (jtag_reset_config & RESET_SRST_PULLS_TRST) ) )
+ {
+ tap_set_state(TAP_RESET);
+ }
+ layout->reset(cmd->cmd.reset->trst, cmd->cmd.reset->srst);
+ require_send = 1;
+
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "%s scan, %i bits, end in %s", (cmd->cmd.scan->ir_scan) ? "IR" : "DR", scan_size,
- tap_state_name( tap_get_end_state() ) );
+ LOG_DEBUG("trst: %i, srst: %i", cmd->cmd.reset->trst, cmd->cmd.reset->srst);
#endif
- break;
+ return retval;
+}
- case JTAG_SLEEP:
- if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
+static int ft2232_execute_sleep(jtag_command_t *cmd)
+{
+ int retval;
+ retval = ERROR_OK;
+
+ DEBUG_JTAG_IO("sleep %i", cmd->cmd.sleep->us);
+
+ if (ft2232_send_and_recv(first_unsent, cmd) != ERROR_OK)
retval = ERROR_JTAG_QUEUE_FAILED;
- first_unsent = cmd->next;
- jtag_sleep(cmd->cmd.sleep->us);
+ first_unsent = cmd->next;
+ jtag_sleep(cmd->cmd.sleep->us);
#ifdef _DEBUG_JTAG_IO_
LOG_DEBUG( "sleep %i usec while in %s", cmd->cmd.sleep->us, tap_state_name( tap_get_state() ) );
#endif
- break;
- case JTAG_STABLECLOCKS:
+ return retval;
+}
- /* this is only allowed while in a stable state. A check for a stable
- * state was done in jtag_add_clocks()
- */
- if (ft2232_stableclocks(cmd->cmd.stableclocks->num_cycles, cmd) != ERROR_OK)
- retval = ERROR_JTAG_QUEUE_FAILED;
+static int ft2232_execute_stableclocks(jtag_command_t *cmd)
+{
+ int retval;
+ retval = ERROR_OK;
+
+ /* this is only allowed while in a stable state. A check for a stable
+ * state was done in jtag_add_clocks()
+ */
+ if (ft2232_stableclocks(cmd->cmd.stableclocks->num_cycles, cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
#ifdef _DEBUG_JTAG_IO_
- LOG_DEBUG( "clocks %i while in %s", cmd->cmd.stableclocks->num_cycles, tap_state_name( tap_get_state() ) );
+ LOG_DEBUG( "clocks %i while in %s", cmd->cmd.stableclocks->num_cycles, tap_state_name( tap_get_state() ) );
#endif
- break;
+ return retval;
+}
+
+static int ft2232_execute_command(jtag_command_t *cmd)
+{
+ int retval;
+ retval = ERROR_OK;
+
+ switch (cmd->type)
+ {
+ case JTAG_END_STATE: retval = ft2232_execute_end_state(cmd); break;
+ case JTAG_RESET: retval = ft2232_execute_reset(cmd); break;
+ case JTAG_RUNTEST: retval = ft2232_execute_runtest(cmd); break;
+ case JTAG_STATEMOVE: retval = ft2232_execute_statemove(cmd); break;
+ case JTAG_PATHMOVE: retval = ft2232_execute_pathmove(cmd); break;
+ case JTAG_SCAN: retval = ft2232_execute_scan(cmd); break;
+ case JTAG_SLEEP: retval = ft2232_execute_sleep(cmd); break;
+ case JTAG_STABLECLOCKS: retval = ft2232_execute_stableclocks(cmd); break;
default:
LOG_ERROR("BUG: unknown JTAG command type encountered");
- exit(-1);
- }
+ exit(-1);
+ }
+ return retval;
+}
+static int ft2232_execute_queue()
+{
+ jtag_command_t* cmd = jtag_command_queue; /* currently processed command */
+ int retval;
+
+ first_unsent = cmd; /* next command that has to be sent */
+ require_send = 0;
+
+ /* return ERROR_OK, unless ft2232_send_and_recv reports a failed check
+ * that wasn't handled by a caller-provided error handler
+ */
+ retval = ERROR_OK;
+
+ ft2232_buffer_size = 0;
+ ft2232_expect_read = 0;
+
+ /* blink, if the current layout has that feature */
+ if (layout->blink)
+ layout->blink();
+
+ while (cmd)
+ {
+ if (ft2232_execute_command(cmd) != ERROR_OK)
+ retval = ERROR_JTAG_QUEUE_FAILED;
cmd = cmd->next;
}
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