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svf.c: use urj_tap_chain_defer_clock() for state traversals and RUNTEST.

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Improves buffering performance for heterogenous SVFs.


git-svn-id: https://urjtag.svn.sourceforge.net/svnroot/urjtag/trunk@1682 b68d4a1b-bc3d-0410-92ed-d4ac073336b7
master
Arnim Läuger 15 years ago
parent 344c833f0e
commit ca2dbb81b4
2 changed files with 35 additions and 22 deletions
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5
urjtag/ChangeLog
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@ -1,3 +1,8 @@
2009-11-10 Arnim Laeuger <arniml>
* src/svf/svf.c: use urj_tap_chain_defer_clock() for state traversals
and RUNTEST. Improves buffering performance for heterogenous SVFs.
2009-11-03 Mike Frysinger <vapier@gentoo.org>
* configure.ac: Use pkg-config for libusb/libftdi by default.

52
urjtag/src/svf/svf.c
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@ -62,6 +62,14 @@
#endif
/* CHAIN_CLOCK defines the clock function of the chain API that's
deployed for non-timing critical, deferable "chain clocking".
The safe default is urj_tap_chain_clock. Which is however
sub-optimal in terms of transaction buffering in the chain + cable
layers.
Better buffering is achieved with urj_tap_chain_defer_clock. */
#define CHAIN_CLOCK urj_tap_chain_defer_clock
/* define for debug messages */
#undef DEBUG
@ -112,11 +120,11 @@ urj_svf_goto_state (urj_chain_t *chain, int new_state)
switch (current_state)
{
case URJ_TAP_STATE_TEST_LOGIC_RESET:
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
break;
case URJ_TAP_STATE_RUN_TEST_IDLE:
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_SELECT_DR_SCAN:
@ -127,86 +135,86 @@ urj_svf_goto_state (urj_chain_t *chain, int new_state)
|| (current_state & URJ_TAP_STATE_IR
&& new_state & URJ_TAP_STATE_DR))
/* progress in select-idle/reset loop */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
else
/* enter DR/IR branch */
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
break;
case URJ_TAP_STATE_CAPTURE_DR:
if (new_state == URJ_TAP_STATE_SHIFT_DR)
/* enter URJ_TAP_STATE_SHIFT_DR state */
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
else
/* bypass URJ_TAP_STATE_SHIFT_DR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_CAPTURE_IR:
if (new_state == URJ_TAP_STATE_SHIFT_IR)
/* enter URJ_TAP_STATE_SHIFT_IR state */
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
else
/* bypass URJ_TAP_STATE_SHIFT_IR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_SHIFT_DR:
case URJ_TAP_STATE_SHIFT_IR:
/* progress to URJ_TAP_STATE_EXIT1_DR/IR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_EXIT1_DR:
if (new_state == URJ_TAP_STATE_PAUSE_DR)
/* enter URJ_TAP_STATE_PAUSE_DR state */
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
else
/* bypass URJ_TAP_STATE_PAUSE_DR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_EXIT1_IR:
if (new_state == URJ_TAP_STATE_PAUSE_IR)
/* enter URJ_TAP_STATE_PAUSE_IR state */
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
else
/* bypass URJ_TAP_STATE_PAUSE_IR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_PAUSE_DR:
case URJ_TAP_STATE_PAUSE_IR:
/* progress to URJ_TAP_STATE_EXIT2_DR/IR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_EXIT2_DR:
if (new_state == URJ_TAP_STATE_SHIFT_DR)
/* enter URJ_TAP_STATE_SHIFT_DR state */
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
else
/* progress to URJ_TAP_STATE_UPDATE_DR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_EXIT2_IR:
if (new_state == URJ_TAP_STATE_SHIFT_IR)
/* enter URJ_TAP_STATE_SHIFT_IR state */
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
else
/* progress to URJ_TAP_STATE_UPDATE_IR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
case URJ_TAP_STATE_UPDATE_DR:
case URJ_TAP_STATE_UPDATE_IR:
if (new_state == URJ_TAP_STATE_RUN_TEST_IDLE)
/* enter URJ_TAP_STATE_RUN_TEST_IDLE */
urj_tap_chain_clock (chain, 0, 0, 1);
CHAIN_CLOCK (chain, 0, 0, 1);
else
/* progress to Select_DR/IR */
urj_tap_chain_clock (chain, 1, 0, 1);
CHAIN_CLOCK (chain, 1, 0, 1);
break;
default:
@ -728,7 +736,7 @@ urj_svf_runtest (urj_chain_t *chain, urj_svf_parser_priv_t *priv,
}
}
else
urj_tap_chain_clock (chain, 0, 0, run_count);
CHAIN_CLOCK (chain, 0, 0, run_count);
urj_svf_goto_state (chain, priv->runtest_end_state);
@ -762,7 +770,7 @@ urj_svf_runtest (urj_chain_t *chain, urj_svf_parser_priv_t *priv,
urj_tap_chain_clock (chain, 0, 0, 1);
}
else
urj_tap_chain_clock (chain, 0, 0, run_count);
CHAIN_CLOCK (chain, 0, 0, run_count);
urj_svf_goto_state (chain, priv->runtest_end_state);

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