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added jtag_add_dr_out(). Better for hw fifo, same for software fifo.

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Passes 94kBytes/s regression test. 

Works with str912, which relies on bypass

git-svn-id: svn://svn.berlios.de/openocd/trunk@447 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
oharboe
2008-03-05 19:21:22 +00:00
parent f14f84ca1e
commit 9b25f5eba2
4 changed files with 197 additions and 110 deletions
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59
src/jtag/jtag.h
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@@ -344,28 +344,51 @@ extern int jtag_verify_capture_ir;
#define ERROR_JTAG_DEVICE_ERROR (-107)
/* Here a #define MINIDRIVER() and an inline version of hw fifo interface_jtag_add_shift can be defined */
#ifndef MINIDRIVER
extern int interface_jtag_add_shift(const enum tap_state shift_state, const enum tap_state end_state, int bits, u32 value);
/* this allows JTAG devices to implement the entire jtag_xxx() layer in hw/sw */
#ifdef HAVE_JTAG_MINIDRIVER_H
/* Here a #define MINIDRIVER() and an inline version of hw fifo interface_jtag_add_dr_out can be defined */
#include "jtag_minidriver.h"
#define MINIDRIVER(a) notused ## a
#else
#define MINIDRIVER(a) a
/* jtag_add_dr_out() is a faster version of jtag_add_dr_scan()
*
* Current or end_state can not be TAP_TLR. end_state can be -1
*
* num_bits[i] is the number of bits to clock out from value[i] LSB first.
*
* If the device is in bypass, then that is an error condition in
* the caller code that is not detected by this fn, whereas jtag_add_dr_scan()
* does detect it. Similarly if the device is not in bypass, data must
* be passed to it.
*
* If anything fails, then jtag_error will be set and jtag_execute() will
* return an error. There is no way to determine if there was a failure
* during this function call.
*
* Note that this jtag_add_dr_out can be defined as an inline function.
*/
extern void interface_jtag_add_dr_out(int device,
int num_fields,
int *num_bits,
u32 *value,
enum tap_state end_state);
#endif
/* Enter the shift_state and cycle "bits" times out of that state.
*
* So if the end_state!=shift_state, then the transition from shift_state to
* end_state counts as a transition out of shift_state.
*
* Legal shift states TAP_SD and TAP_SI
*
* Legal end state does not include TAP_TLR
*
* Bits are clocked out from value LSB first.
*/
static __inline int jtag_add_shift(const enum tap_state shift_state, const enum tap_state end_state, int bits, u32 value)
static __inline__ void jtag_add_dr_out(int device,
int num_fields,
int *num_bits,
u32 *value,
enum tap_state end_state)
{
int retval;
retval=interface_jtag_add_shift(shift_state, end_state, bits, value);
return retval;
if (end_state != -1)
cmd_queue_end_state=end_state;
cmd_queue_cur_state=cmd_queue_end_state;
interface_jtag_add_dr_out(device, num_fields, num_bits, value, cmd_queue_end_state);
}