1 files changed, 50 insertions, 0 deletions
diff --git a/arch/mips/mach-octeon/include/mach/cvmx-helper-errata.h b/arch/mips/mach-octeon/include/mach/cvmx-helper-errata.h
new file mode 100644
index 0000000000..9ed13c1626
--- /dev/null
+++ b/arch/mips/mach-octeon/include/mach/cvmx-helper-errata.h
@@ -0,0 +1,50 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Marvell International Ltd.
+ *
+ * Fixes and workaround for Octeon chip errata. This file
+ * contains functions called by cvmx-helper to workaround known
+ * chip errata. For the most part, code doesn't need to call
+ * these functions directly.
+ */
+
+#ifndef __CVMX_HELPER_ERRATA_H__
+#define __CVMX_HELPER_ERRATA_H__
+
+#include "cvmx-wqe.h"
+
+/**
+ * @INTERNAL
+ * Function to adjust internal IPD pointer alignments
+ *
+ * @return 0 on success
+ *         !0 on failure
+ */
+int __cvmx_helper_errata_fix_ipd_ptr_alignment(void);
+
+/**
+ * This function needs to be called on all Octeon chips with
+ * errata PKI-100.
+ *
+ * The Size field is 8 too large in WQE and next pointers
+ *
+ *  The Size field generated by IPD is 8 larger than it should
+ *  be. The Size field is <55:40> of both:
+ *      - WORD3 in the work queue entry, and
+ *      - the next buffer pointer (which precedes the packet data
+ *        in each buffer).
+ *
+ * @param work   Work queue entry to fix
+ * @return Zero on success. Negative on failure
+ */
+int cvmx_helper_fix_ipd_packet_chain(cvmx_wqe_t *work);
+
+/**
+ * Due to errata G-720, the 2nd order CDR circuit on CN52XX pass
+ * 1 doesn't work properly. The following code disables 2nd order
+ * CDR for the specified QLM.
+ *
+ * @param qlm    QLM to disable 2nd order CDR for.
+ */
+void __cvmx_helper_errata_qlm_disable_2nd_order_cdr(int qlm);
+#endif