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Clean up the core JTAG TAP APIs: 

- Move jtag_tap_name to same location as other TAP functions; export it.
- Factor new jtag_tap_add() from jim_newtap_cmd(); appends TAP to global list.
- Move static chain position counter to global; use in jtag_NumTotalTaps().
- Use jtag_AllTaps for reading tap list, instead of accessing global directly.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2055 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
zwelch 2009-06-04 23:26:58 +00:00
parent 82a5f6ff3e
commit d3d02f4789
2 changed files with 34 additions and 32 deletions
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65
src/jtag/jtag.c
View File

@ -63,7 +63,15 @@ const Jim_Nvp nvp_jtag_tap_event[] = {
int jtag_trst = 0;
int jtag_srst = 0;
/**
* List all TAPs that have been created.
*/
static jtag_tap_t *jtag_all_taps = NULL;
/**
* The number of TAPs in the jtag_all_taps list, used to track the
* assigned chain position to new TAPs
*/
static int jtag_num_taps = 0;
enum reset_types jtag_reset_config = RESET_NONE;
tap_state_t cmd_queue_end_state = TAP_RESET;
@ -235,16 +243,7 @@ jtag_tap_t *jtag_AllTaps(void)
int jtag_NumTotalTaps(void)
{
jtag_tap_t *t;
int n;
n = 0;
t = jtag_AllTaps();
while(t){
n++;
t = t->next_tap;
}
return n;
return jtag_num_taps;
}
int jtag_NumEnabledTaps(void)
@ -263,6 +262,17 @@ int jtag_NumEnabledTaps(void)
return n;
}
/// Append a new TAP to the chain of all taps.
static void jtag_tap_add(struct jtag_tap_s *t)
{
t->abs_chain_position = jtag_num_taps++;
jtag_tap_t **tap = &jtag_all_taps;
while(*tap != NULL)
tap = &(*tap)->next_tap;
*tap = t;
}
jtag_tap_t *jtag_TapByString( const char *s )
{
jtag_tap_t *t;
@ -324,6 +334,12 @@ jtag_tap_t * jtag_TapByAbsPosition( int n )
return t;
}
const char *jtag_tap_name(const jtag_tap_t *tap)
{
return (tap == NULL) ? "(unknown)" : tap->dotted_name;
}
int jtag_register_event_callback(int (*callback)(enum jtag_event event, void *priv), void *priv)
{
jtag_event_callback_t **callbacks_p = &jtag_event_callbacks;
@ -798,11 +814,6 @@ void jtag_add_sleep(u32 us)
return;
}
static const char *jtag_tap_name(const jtag_tap_t *tap)
{
return (tap == NULL) ? "(unknown)" : tap->dotted_name;
}
int jtag_check_value_inner(u8 *captured, u8 *in_check_value, u8 *in_check_mask, int num_bits)
{
int retval = ERROR_OK;
@ -1262,7 +1273,6 @@ static int jtag_tap_configure_cmd( Jim_GetOptInfo *goi, jtag_tap_t * tap)
static int jim_newtap_cmd( Jim_GetOptInfo *goi )
{
jtag_tap_t *pTap;
jtag_tap_t **ppTap;
jim_wide w;
int x;
int e;
@ -1429,21 +1439,12 @@ static int jim_newtap_cmd( Jim_GetOptInfo *goi )
jtag_register_event_callback(jtag_reset_callback, pTap );
ppTap = &(jtag_all_taps);
while( (*ppTap) != NULL ){
ppTap = &((*ppTap)->next_tap);
}
*ppTap = pTap;
{
static int n_taps = 0;
pTap->abs_chain_position = n_taps++;
}
LOG_DEBUG( "Created Tap: %s @ abs position %d, irlen %d, capture: 0x%x mask: 0x%x",
(*ppTap)->dotted_name,
(*ppTap)->abs_chain_position,
(*ppTap)->ir_length,
(*ppTap)->ir_capture_value,
(*ppTap)->ir_capture_mask );
jtag_tap_add(pTap);
LOG_DEBUG("Created Tap: %s @ abs position %d, "
"irlen %d, capture: 0x%x mask: 0x%x", pTap->dotted_name,
pTap->abs_chain_position, pTap->ir_length,
pTap->ir_capture_value, pTap->ir_capture_mask);
return ERROR_OK;
}
@ -1914,7 +1915,7 @@ static int handle_scan_chain_command(struct command_context_s *cmd_ctx, char *cm
{
jtag_tap_t *tap;
tap = jtag_all_taps;
tap = jtag_AllTaps();
command_print(cmd_ctx, " TapName | Enabled | IdCode Expected IrLen IrCap IrMask Instr ");
command_print(cmd_ctx, "---|--------------------|---------|------------|------------|------|------|------|---------");

1
src/jtag/jtag.h
View File

@ -176,6 +176,7 @@ struct jtag_tap_s
jtag_tap_t* next_tap;
};
extern jtag_tap_t* jtag_AllTaps(void);
extern const char *jtag_tap_name(const jtag_tap_t *tap);
extern jtag_tap_t* jtag_TapByPosition(int n);
extern jtag_tap_t* jtag_TapByString(const char* dotted_name);
extern jtag_tap_t* jtag_TapByJimObj(Jim_Interp* interp, Jim_Obj* obj);