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Add header file for JTAG minidriver:

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- Wraps all minidriver API functions using API front-ends:
  - Outlines jtag_add_dr_out() and jtag_alloc_in_value32().
  - Adds interface_ prefix to existing jtag_alloc_invalue_32 routines.
  - Re-inline these interface definitions in new header file.
- Re-inline parts of the (mini)driver implementations in minidriver.h.
- Replace INCLUDE_JTAG_MINIDRIVER_H with #include directives.

The next patch will finish removing '#ifdef HAVE_JTAG_MINIDRIVER_H'
from jtag.h.


git-svn-id: svn://svn.berlios.de/openocd/trunk@2006 b42882b7-edfa-0310-969c-e2dbd0fdcd60
This commit is contained in:
zwelch
2009-06-02 23:15:12 +00:00
parent 7dc29156fe
commit a546729609
6 changed files with 151 additions and 102 deletions
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127
src/jtag/minidriver.h Normal file
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/***************************************************************************
* Copyright (C) 2005 by Dominic Rath *
* Dominic.Rath@gmx.de *
* *
* Copyright (C) 2007,2008 Øyvind Harboe *
* oyvind.harboe@zylin.com *
* *
* Copyright (C) 2009 Zachary T Welch *
* zw@superlucidity.net *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#ifndef MINIDRIVER_H
#define MINIDRIVER_H
/* @page jtagminidriver JTAG Mini-Driver
*
* The JTAG minidriver interface allows the definition of alternate
* interface functions, instead of the built-in asynchronous driver
* module that is used by the standard JTAG interface drivers.
*
* In addtion to the functions defined in the c minidriver.h file, the
* @c jtag_minidriver.h file must declare the following functions (or
* define static inline versions of them):
* - jtag_add_callback
* - jtag_add_callback4
* - interface_jtag_add_dr_out
*
* The following core functions are declared in this file for use by
* the minidriver and do @b not need to be defined by an implementation:
* - default_interface_jtag_execute_queue()
*/
#ifdef HAVE_JTAG_MINIDRIVER_H
#include "jtag_minidriver.h"
static inline void interface_jtag_alloc_in_value32(scan_field_t *field)
{
field->in_value = field->intmp;
}
static inline void interface_jtag_add_scan_check_alloc(scan_field_t *field)
{
/* We're executing this synchronously, so try to use local storage. */
if (field->num_bits > 32)
{
unsigned num_bytes = TAP_SCAN_BYTES(field->num_bits);
field->in_value = (u8 *)malloc(num_bytes);
field->allocated = 1;
}
else
field->in_value = field->intmp;
}
#else
static inline void interface_jtag_alloc_in_value32(scan_field_t *field)
{
field->in_value = (u8 *)cmd_queue_alloc(4);
}
static inline void interface_jtag_add_scan_check_alloc(scan_field_t *field)
{
unsigned num_bytes = TAP_SCAN_BYTES(field->num_bits);
field->in_value = (u8 *)cmd_queue_alloc(num_bytes);
}
extern void interface_jtag_add_dr_out(jtag_tap_t* tap,
int num_fields, const int* num_bits, const u32* value,
tap_state_t end_state);
#endif
extern int interface_jtag_add_ir_scan(
int num_fields, const scan_field_t* fields,
tap_state_t endstate);
extern int interface_jtag_add_plain_ir_scan(
int num_fields, const scan_field_t* fields,
tap_state_t endstate);
extern int interface_jtag_add_dr_scan(
int num_fields, const scan_field_t* fields,
tap_state_t endstate);
extern int interface_jtag_add_plain_dr_scan(
int num_fields, const scan_field_t* fields,
tap_state_t endstate);
extern int interface_jtag_add_tlr(void);
extern int interface_jtag_add_pathmove(int num_states, const tap_state_t* path);
extern int interface_jtag_add_runtest(int num_cycles, tap_state_t endstate);
/**
* This drives the actual srst and trst pins. srst will always be 0
* if jtag_reset_config & RESET_SRST_PULLS_TRST != 0 and ditto for
* trst.
*
* the higher level jtag_add_reset will invoke jtag_add_tlr() if
* approperiate
*/
extern int interface_jtag_add_reset(int trst, int srst);
extern int interface_jtag_add_end_state(tap_state_t endstate);
extern int interface_jtag_add_sleep(u32 us);
extern int interface_jtag_add_clocks(int num_cycles);
extern int interface_jtag_execute_queue(void);
/**
* Calls the interface callback to execute the queue. This routine
* is used by the JTAG driver layer and should not be called directly.
*/
extern int default_interface_jtag_execute_queue(void);
#endif // MINIDRIVER_H