diff options
Diffstat (limited to 'src/jtag/jtag.h')
| -rw-r--r-- | src/jtag/jtag.h | 22 |
1 files changed, 21 insertions, 1 deletions
diff --git a/src/jtag/jtag.h b/src/jtag/jtag.h index e2c8df47..84290ca7 100644 --- a/src/jtag/jtag.h +++ b/src/jtag/jtag.h @@ -277,7 +277,7 @@ typedef struct scan_field_s /* internal work space */ int allocated; /* in_value has been allocated for the queue */ int modified; /* did we modify the in_value? */ - u32 intmp; /* temporary storage for checking synchronously */ + u8 intmp[4]; /* temporary storage for checking synchronously */ } scan_field_t; enum scan_type { @@ -565,6 +565,26 @@ extern void jtag_add_ir_scan_noverify(int num_fields, scan_field_t *fields, tap_ extern int interface_jtag_add_ir_scan(int num_fields, scan_field_t* fields, tap_state_t endstate); extern void jtag_add_dr_scan(int num_fields, scan_field_t* fields, tap_state_t endstate); +/* set in_value to point to 32 bits of memory to scan into. This function + * is a way to handle the case of synchronous and asynchronous + * JTAG queues. + * + * In the event of an asynchronous queue execution the queue buffer + * allocation method is used, for the synchronous case the temporary 32 bits come + * from the input field itself. + */ + +#ifndef HAVE_JTAG_MINIDRIVER_H +extern void jtag_alloc_in_value32(scan_field_t *field); +#else +static __inline__ void jtag_alloc_in_value32(scan_field_t *field) +{ + field->in_value=field->intmp; +} +#endif + + + /* This version of jtag_add_dr_scan() uses the check_value/mask fields */ extern void jtag_add_dr_scan_check(int num_fields, scan_field_t* fields, tap_state_t endstate); extern int interface_jtag_add_dr_scan(int num_fields, scan_field_t* fields, tap_state_t endstate); |