minidriver: fix inline capability of minidriver

Low latency low CPU processing power systems(embedded)
will benefit greatly from being able to inline certain
jtag_add_xxx() fn's. The trick is that this has to be
done in such a way as to allow implementing an OpenOCD
API with a shared library(eventually) on a PC hosted
OpenOCD.

Signed-off-by: Øyvind Harboe <oyvind.harboe@zylin.com>

.gitignore

@@ -10,6 +10,10 @@
 *.la
 *.in
 
+# generated source files
+src/jtag/minidriver_imp.h
+src/jtag/jtag_minidriver.h
+
 # editor files
 *.swp
 

src/jtag/Makefile.am

@@ -9,33 +9,49 @@ SUBDIRS =
 DRIVERFILES =
 libjtag_la_LIBADD =
 
-if MINIDRIVER
+CLEANFILES =
 
-# for minidriver_imp.h
-AM_CPPFLAGS += -I$(srcdir)/minidriver
+BUILT_SOURCES =
+
+BUILT_SOURCES += minidriver_imp.h
+CLEANFILES += minidriver_imp.h
+
+if MINIDRIVER
 
 if ZY1000
 DRIVERFILES += zy1000/zy1000.c
-AM_CPPFLAGS += -I$(srcdir)/zy1000
+JTAG_MINIDRIVER_DIR = $(srcdir)/zy1000
 endif
 if MINIDRIVER_DUMMY
 DRIVERFILES += minidummy/minidummy.c commands.c
-AM_CPPFLAGS += -I$(srcdir)/minidummy
+JTAG_MINIDRIVER_DIR = $(srcdir)/minidummy
 endif
 
+MINIDRIVER_IMP_DIR = $(srcdir)/minidriver
+
+jtag_minidriver.h: $(JTAG_MINIDRIVER_DIR)/jtag_minidriver.h
+	cp $< $@
+
+BUILT_SOURCES += jtag_minidriver.h
+
+CLEANFILES += jtag_minidriver.h
+
 else
 
+MINIDRIVER_IMP_DIR = $(srcdir)/drivers
 DRIVERFILES += commands.c
 
 SUBDIRS += drivers
 libjtag_la_LIBADD += $(top_builddir)/src/jtag/drivers/libocdjtagdrivers.la
 
-# for minidriver_imp.h
-AM_CPPFLAGS += -I$(srcdir)/drivers
-
 endif
+
 # endif // MINIDRIVER
 
+minidriver_imp.h: $(MINIDRIVER_IMP_DIR)/minidriver_imp.h
+	cp $< $@
+
+
 libjtag_la_SOURCES = \
 	core.c \
 	interface.c \

src/jtag/commands.c

@@ -31,6 +31,7 @@
 #include "config.h"
 #endif
 
+#include <jtag/jtag.h>
 #include "commands.h"
 
 struct cmd_queue_page {

src/jtag/commands.h

@@ -26,8 +26,6 @@
 #ifndef JTAG_COMMANDS_H
 #define JTAG_COMMANDS_H
 
-#include <jtag/jtag.h>
-
 /**
  * The inferred type of a scan_command_s structure, indicating whether
  * the command has the host scan in from the device, the host scan out

src/jtag/core.c

@@ -32,7 +32,6 @@
 #endif
 
 #include "jtag.h"
-#include "minidriver.h"
 #include "interface.h"
 
 #ifdef HAVE_STRINGS_H
@@ -398,18 +397,6 @@ void jtag_add_plain_ir_scan(int in_num_fields, const struct scan_field *in_field
 	jtag_set_error(retval);
 }
 
-void jtag_add_callback(jtag_callback1_t f, jtag_callback_data_t data0)
-{
-	interface_jtag_add_callback(f, data0);
-}
-
-void jtag_add_callback4(jtag_callback_t f, jtag_callback_data_t data0,
-		jtag_callback_data_t data1, jtag_callback_data_t data2,
-		jtag_callback_data_t data3)
-{
-	interface_jtag_add_callback4(f, data0, data1, data2, data3);
-}
-
 static int jtag_check_value_inner(uint8_t *captured, uint8_t *in_check_value,
 		uint8_t *in_check_mask, int num_bits);
 
@@ -491,20 +478,6 @@ void jtag_add_plain_dr_scan(int in_num_fields, const struct scan_field *in_field
 	jtag_set_error(retval);
 }
 
-void jtag_add_dr_out(struct jtag_tap* tap,
-		int num_fields, const int* num_bits, const uint32_t* value,
-		tap_state_t end_state)
-{
-	assert(end_state != TAP_RESET);
-	assert(end_state != TAP_INVALID);
-
-	cmd_queue_cur_state = end_state;
-
-	interface_jtag_add_dr_out(tap,
-			num_fields, num_bits, value,
-			end_state);
-}
-
 void jtag_add_tlr(void)
 {
 	jtag_prelude(TAP_RESET);

src/jtag/drivers/driver.c

@@ -2,7 +2,7 @@
  *   Copyright (C) 2005 by Dominic Rath                                    *
  *   Dominic.Rath@gmx.de                                                   *
  *                                                                         *
- *   Copyright (C) 2007,2008 Øyvind Harboe                                 *
+ *   Copyright (C) 2007-2009 Øyvind Harboe                                 *
  *   oyvind.harboe@zylin.com                                               *
  *                                                                         *
  *   Copyright (C) 2009 SoftPLC Corporation                                *
@@ -31,7 +31,9 @@
 #include "config.h"
 #endif
 
+#include <jtag/jtag.h>
 #include <jtag/interface.h>
+#include <jtag/commands.h>
 #include <jtag/minidriver.h>
 #include <helper/command.h>
 
@@ -525,3 +527,30 @@ void interface_jtag_add_callback(jtag_callback1_t callback, jtag_callback_data_t
 	jtag_add_callback4(jtag_convert_to_callback4, data0, (jtag_callback_data_t)callback, 0, 0);
 }
 
+
+/* A minidriver can use use an inline versions of this API level fn */
+void jtag_add_dr_out(struct jtag_tap* tap,
+		int num_fields, const int* num_bits, const uint32_t* value,
+		tap_state_t end_state)
+{
+	assert(end_state != TAP_RESET);
+	assert(end_state != TAP_INVALID);
+
+	cmd_queue_cur_state = end_state;
+
+	interface_jtag_add_dr_out(tap,
+			num_fields, num_bits, value,
+			end_state);
+}
+
+void jtag_add_callback(jtag_callback1_t f, jtag_callback_data_t data0)
+{
+	interface_jtag_add_callback(f, data0);
+}
+
+void jtag_add_callback4(jtag_callback_t f, jtag_callback_data_t data0,
+		jtag_callback_data_t data1, jtag_callback_data_t data2,
+		jtag_callback_data_t data3)
+{
+	interface_jtag_add_callback4(f, data0, data1, data2, data3);
+}

src/jtag/drivers/minidriver_imp.h

@@ -1,6 +1,6 @@
 /***************************************************************************
  *   Copyright (C) 2005 by Dominic Rath <Dominic.Rath@gmx.de>              *
- *   Copyright (C) 2007,2008 Øyvind Harboe <oyvind.harboe@zylin.com>       *
+ *   Copyright (C) 2007-2009 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  *
@@ -44,4 +44,13 @@ void interface_jtag_add_callback4(jtag_callback_t f, jtag_callback_data_t data0,
 		jtag_callback_data_t data1, jtag_callback_data_t data2,
 		jtag_callback_data_t data3);
 
+void jtag_add_dr_out(struct jtag_tap* tap,
+		int num_fields, const int* num_bits, const uint32_t* value,
+		tap_state_t end_state);
+
+
+void jtag_add_callback4(jtag_callback_t f, jtag_callback_data_t data0,
+		jtag_callback_data_t data1, jtag_callback_data_t data2,
+		jtag_callback_data_t data3);
+
 #endif // MINIDRIVER_IMP_H

src/jtag/jtag.h

@@ -461,10 +461,6 @@ typedef int (*jtag_callback_t)(jtag_callback_data_t data0,
  * @param data3 An integer big enough to use as an @c int or a pointer.
  *
  */
-void jtag_add_callback4(jtag_callback_t f, jtag_callback_data_t data0,
-		jtag_callback_data_t data1, jtag_callback_data_t data2,
-		jtag_callback_data_t data3);
-
 
 /**
  * Run a TAP_RESET reset where the end state is TAP_RESET,
@@ -688,9 +684,6 @@ void jtag_sleep(uint32_t us);
  * There is no jtag_add_dr_outin() version of this fn that also allows
  * clocking data back in. Patches gladly accepted!
  */
-void jtag_add_dr_out(struct jtag_tap* tap,
-		int num_fields, const int* num_bits, const uint32_t* value,
-		tap_state_t end_state);
 
 
 /**
@@ -725,4 +718,9 @@ bool jtag_poll_get_enabled(void);
  */
 void jtag_poll_set_enabled(bool value);
 
+
+/* The minidriver may have inline versions of some of the low
+ * level APIs that are used in inner loops. */
+#include <jtag/minidriver.h>
+
 #endif /* JTAG_H */

src/jtag/minidriver.h

@@ -47,7 +47,7 @@
 
 // this header will be provided by the minidriver implementation,
 // and it may provide additional declarations that must be defined.
-#include "minidriver_imp.h"
+#include <jtag/minidriver_imp.h>
 
 int interface_jtag_add_ir_scan(
 		int num_fields, const struct scan_field* fields,

src/jtag/minidriver/minidriver_imp.h

@@ -21,7 +21,7 @@
 #ifndef MINIDRIVER_IMP_H
 #define MINIDRIVER_IMP_H
 
-#include "jtag_minidriver.h"
+#include <jtag/jtag_minidriver.h>
 
 static inline void interface_jtag_alloc_in_value32(struct scan_field *field)
 {
@@ -41,4 +41,21 @@ static inline void interface_jtag_add_scan_check_alloc(struct scan_field *field)
 		field->in_value = field->intmp;
 }
 
+static inline void jtag_add_dr_out(struct jtag_tap* tap,
+		int num_fields, const int* num_bits, const uint32_t* value,
+		tap_state_t end_state)
+{
+	cmd_queue_cur_state = end_state;
+
+	interface_jtag_add_dr_out(tap,
+			num_fields, num_bits, value,
+			end_state);
+}
+
+#define jtag_add_callback(callback, in) interface_jtag_add_callback(callback, in)
+
+#define jtag_add_callback4(callback, in, data1, data2, data3) interface_jtag_add_callback4(callback, in, data1, data2, data3)
+
+
+
 #endif // MINIDRIVER_IMP_H

src/jtag/minidummy/minidummy.c

@@ -20,6 +20,7 @@
 #include "config.h"
 #endif
 
+#include <jtag/jtag.h>
 #include <target/embeddedice.h>
 #include <jtag/minidriver.h>
 #include <jtag/interface.h>