1 files changed, 58 insertions, 0 deletions
diff --git a/fpga/xilinx/programmer/dependencies/libxsvf/scan.c b/fpga/xilinx/programmer/dependencies/libxsvf/scan.c
new file mode 100644
index 0000000..cb24e56
--- /dev/null
+++ b/fpga/xilinx/programmer/dependencies/libxsvf/scan.c
@@ -0,0 +1,58 @@
+/*
+ *  Lib(X)SVF  -  A library for implementing SVF and XSVF JTAG players
+ *
+ *  Copyright (C) 2009  RIEGL Research ForschungsGmbH
+ *  Copyright (C) 2009  Clifford Wolf <clifford@clifford.at>
+ *  
+ *  Permission to use, copy, modify, and/or distribute this software for any
+ *  purpose with or without fee is hereby granted, provided that the above
+ *  copyright notice and this permission notice appear in all copies.
+ *  
+ *  THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ *  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ *  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ *  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ *  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ *  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ *  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ */
+
+#include "libxsvf.h"
+
+int libxsvf_scan(struct libxsvf_host *h)
+{
+	int i, j;
+
+	if (libxsvf_tap_walk(h, LIBXSVF_TAP_RESET) < 0)
+		return -1;
+
+	if (libxsvf_tap_walk(h, LIBXSVF_TAP_DRSHIFT) < 0)
+		return -1;
+
+	for (i=0; i<256; i++)
+	{
+		int bit = LIBXSVF_HOST_PULSE_TCK(0, 1, -1, 0, 1);
+
+		if (bit < 0)
+			return -1;
+
+		if (bit == 0) {
+			LIBXSVF_HOST_REPORT_DEVICE(0);
+		} else {
+			unsigned long idcode = 1;
+			for (j=1; j<32; j++) {
+				int bit = LIBXSVF_HOST_PULSE_TCK(0, 1, -1, 0, 1);
+				if (bit < 0)
+					return -1;
+				idcode |= ((unsigned long)bit) << j;
+			}
+			if (idcode == 0xffffffff)
+				break;
+			LIBXSVF_HOST_REPORT_DEVICE(idcode);
+		}
+	}
+
+	return 0;
+}
+