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zy1000: fix crash in JTAG over TCP/IP 

disable asynchronous callbacks and reads as minidriver requires
reads and callbacks to be synchronous.

Could possibly be fixed by some design work.

Change-Id: I7ca79a551085b2e8ba6928e1762d1baed6e95d4b
Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>
Reviewed-on: http://openocd.zylin.com/260
Tested-by: jenkins
Reviewed-by: Øyvind Harboe <oyvindharboe@gmail.com>
Tested-by: Øyvind Harboe <oyvindharboe@gmail.com>
This commit is contained in:
Øyvind Harboe 2011-12-13 17:57:20 +01:00 committed by Øyvind Harboe
parent e8d1da15c2
commit 230f0e9dc6
1 changed files with 12 additions and 0 deletions
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12
src/jtag/zy1000/zy1000.c
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@ -1296,6 +1296,15 @@ void zy1000_jtag_add_callback4(jtag_callback_t callback, jtag_callback_data_t da
callbackqueue[callbackqueue_pos].data2 = data2;
callbackqueue[callbackqueue_pos].data3 = data3;
callbackqueue_pos++;
/* KLUDGE!
* make callbacks synchronous for now as minidriver requires callback
* to be synchronous.
*
* We can get away with making read and writes asynchronous so we
* don't completely kill performance.
*/
zy1000_flush_callbackqueue();
}
static int zy1000_jtag_convert_to_callback4(jtag_callback_data_t data0, jtag_callback_data_t data1, jtag_callback_data_t data2, jtag_callback_data_t data3)
@ -1342,6 +1351,9 @@ static void writeShiftValue(uint8_t *data, int bits)
readqueue[readqueue_pos].dest = data;
readqueue[readqueue_pos].bits = bits;
readqueue_pos++;
/* KLUDGE!!! minidriver requires readqueue to be synchronous */
zy1000_flush_readqueue();
}
#else