This is useful but equally useful, and not dependent on, if we accept
my or Öyvinds ideas about some design issues.
Regards
Magnus
Øyvind Harboe wrote:
> Committed.
>
> Profiling feature that counts # of times that the queue is flushed.
>
> The nice thing about this feature is that it works across all
> interface types.
>
> Adding a 1ms delay where the counter is incremented can be used
> to emulate long delays of USB or JTAG over TCP/IP....
>
>
>> help flush
>>
> flush_count returns number of times the JTAG queue has been
> flushed
>
>
>> puts [flush_count]
>>
> 290
>
>> reset init
>>
> JTAG tap: lpc2148.cpu tap/device found: 0x4f1f0f0f (Manufacturer: 0x787,
> Part:
> 0xf1f0, Version: 0x4)
> JTAG Tap/device matched
> srst pulls trst - can not reset into halted mode. Issuing halt after reset.
> target state: halted
> target halted in Thumb state due to debug-request, current mode: Supervisor
> cpsr: 0xa00000f3 pc: 0x7fffd2d8
> requesting target halt and executing a soft reset
> target state: halted
> target halted in ARM state due to debug-request, current mode: Supervisor
> cpsr: 0xa00000d3 pc: 0x00000000
>
>> puts [flush_count]
>>
> 385
>
>
>
> ### Eclipse Workspace Patch 1.0
> #P openocd
> Index: src/jtag/jtag.c
> ===================================================================
> --- src/jtag/jtag.c (revision 1673)
> +++ src/jtag/jtag.c (working copy)
> @@ -43,7 +43,7 @@
> #endif
> #include <assert.h>
>
> -
> +int jtag_flush_queue_count; /* count # of flushes for profiling /
> debugging purposes */
>
> /* note that this is not marked as static as it must be available
> from outside jtag.c for those
> that implement the jtag_xxx() minidriver layer
> @@ -243,6 +243,7 @@
> static int handle_runtest_command(struct command_context_s *cmd_ctx,
> char *cmd, char **args, int argc);
> static int handle_irscan_command(struct command_context_s *cmd_ctx,
> char *cmd, char **args, int argc);
> static int Jim_Command_drscan(Jim_Interp *interp, int argc, Jim_Obj
> *const *argv);
> +static int Jim_Command_flush_count(Jim_Interp *interp, int argc,
> Jim_Obj *const *args);
>
> static int handle_verify_ircapture_command(struct command_context_s
> *cmd_ctx, char *cmd, char **args, int argc);
>
> @@ -1446,6 +1447,11 @@
>
> void jtag_execute_queue_noclear(void)
> {
> + /* each flush can take as much as 1-2ms on high bandwidth low
> latency interfaces.
> + * E.g. a JTAG over TCP/IP or USB....
> + */
> + jtag_flush_queue_count++;
> +
> int retval=interface_jtag_execute_queue();
> /* we keep the first error */
> if ((jtag_error==ERROR_OK)&&(retval!=ERROR_OK))
> @@ -2180,6 +2186,7 @@
> register_command(cmd_ctx, NULL, "irscan", handle_irscan_command,
> COMMAND_EXEC, "execute IR scan <device> <instr> [dev2] [instr2]
> ...");
> register_jim(cmd_ctx, "drscan", Jim_Command_drscan, "execute DR scan
> <device> <num_bits> <value> <num_bits1> <value2> ...");
> + register_jim(cmd_ctx, "flush_count", Jim_Command_flush_count,
> "returns number of times the JTAG queue has been flushed");
>
> register_command(cmd_ctx, NULL, "verify_ircapture",
> handle_verify_ircapture_command,
> COMMAND_ANY, "verify value captured during Capture-IR
> <enable|disable>");
> @@ -2945,6 +2952,15 @@
> return JIM_OK;
> }
>
> +
> +static int Jim_Command_flush_count(Jim_Interp *interp, int argc,
> Jim_Obj *const *args)
> +{
> + Jim_SetResult(interp, Jim_NewIntObj(interp, jtag_flush_queue_count));
> +
> + return JIM_OK;
> +}
> +
> +
> static int handle_verify_ircapture_command(struct command_context_s
> *cmd_ctx, char *cmd, char **args, int argc)
> {
> if (argc == 1)
>
>
>
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