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+/***********************license start***************
+ * Copyright (c) 2003-2010  Cavium Inc. (support@cavium.com). All rights
+ * reserved.
+ *
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *   * Redistributions of source code must retain the above copyright
+ *     notice, this list of conditions and the following disclaimer.
+ *
+ *   * Redistributions in binary form must reproduce the above
+ *     copyright notice, this list of conditions and the following
+ *     disclaimer in the documentation and/or other materials provided
+ *     with the distribution.
+
+ *   * Neither the name of Cavium Inc. nor the names of
+ *     its contributors may be used to endorse or promote products
+ *     derived from this software without specific prior written
+ *     permission.
+
+ * This Software, including technical data, may be subject to U.S. export  control
+ * laws, including the U.S. Export Administration Act and its  associated
+ * regulations, and may be subject to export or import  regulations in other
+ * countries.
+
+ * TO THE MAXIMUM EXTENT PERMITTED BY LAW, THE SOFTWARE IS PROVIDED "AS IS"
+ * AND WITH ALL FAULTS AND CAVIUM INC. MAKES NO PROMISES, REPRESENTATIONS OR
+ * WARRANTIES, EITHER EXPRESS, IMPLIED, STATUTORY, OR OTHERWISE, WITH RESPECT TO
+ * THE SOFTWARE, INCLUDING ITS CONDITION, ITS CONFORMITY TO ANY REPRESENTATION OR
+ * DESCRIPTION, OR THE EXISTENCE OF ANY LATENT OR PATENT DEFECTS, AND CAVIUM
+ * SPECIFICALLY DISCLAIMS ALL IMPLIED (IF ANY) WARRANTIES OF TITLE,
+ * MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR A PARTICULAR PURPOSE, LACK OF
+ * VIRUSES, ACCURACY OR COMPLETENESS, QUIET ENJOYMENT, QUIET POSSESSION OR
+ * CORRESPONDENCE TO DESCRIPTION. THE ENTIRE  RISK ARISING OUT OF USE OR
+ * PERFORMANCE OF THE SOFTWARE LIES WITH YOU.
+ ***********************license end**************************************/
+
+
+/**
+ * @file
+ *
+ *  Helper utilities for qlm_jtag.
+ *
+ * <hr>$Revision: 41586 $<hr>
+ */
+
+#ifndef __CVMX_HELPER_JTAG_H__
+#define __CVMX_HELPER_JTAG_H__
+
+/**
+ * Initialize the internal QLM JTAG logic to allow programming
+ * of the JTAG chain by the cvmx_helper_qlm_jtag_*() functions.
+ * These functions should only be used at the direction of Cavium
+ * Networks. Programming incorrect values into the JTAG chain
+ * can cause chip damage.
+ */
+extern void cvmx_helper_qlm_jtag_init(void);
+
+/**
+ * Write up to 32bits into the QLM jtag chain. Bits are shifted
+ * into the MSB and out the LSB, so you should shift in the low
+ * order bits followed by the high order bits. The JTAG chain for
+ * CN52XX and CN56XX is 4 * 268 bits long, or 1072. The JTAG chain
+ * for CN63XX is 4 * 300 bits long, or 1200.
+ *
+ * @param qlm    QLM to shift value into
+ * @param bits   Number of bits to shift in (1-32).
+ * @param data   Data to shift in. Bit 0 enters the chain first, followed by
+ *               bit 1, etc.
+ *
+ * @return The low order bits of the JTAG chain that shifted out of the
+ *         circle.
+ */
+extern uint32_t cvmx_helper_qlm_jtag_shift(int qlm, int bits, uint32_t data);
+
+/**
+ * Shift long sequences of zeros into the QLM JTAG chain. It is
+ * common to need to shift more than 32 bits of zeros into the
+ * chain. This function is a convience wrapper around
+ * cvmx_helper_qlm_jtag_shift() to shift more than 32 bits of
+ * zeros at a time.
+ *
+ * @param qlm    QLM to shift zeros into
+ * @param bits
+ */
+extern void cvmx_helper_qlm_jtag_shift_zeros(int qlm, int bits);
+
+/**
+ * Program the QLM JTAG chain into all lanes of the QLM. You must
+ * have already shifted in the proper number of bits into the
+ * JTAG chain. Updating invalid values can possibly cause chip damage.
+ *
+ * @param qlm    QLM to program
+ */
+extern void cvmx_helper_qlm_jtag_update(int qlm);
+
+/**
+ * Load the QLM JTAG chain with data from all lanes of the QLM.
+ *
+ * @param qlm    QLM to program
+ */
+extern void cvmx_helper_qlm_jtag_capture(int qlm);
+
+#endif  /* __CVMX_HELPER_JTAG_H__ */