mips: octeon: Add misc cvmx-helper header files

Import misc cvmx-helper header files from 2013 U-Boot. They will be used
by the later added drivers to support PCIe and networking on the MIPS
Octeon II / III platforms.

Signed-off-by: Aaron Williams <awilliams@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>

1 files changed, 108 insertions, 0 deletions

diff --git a/arch/mips/mach-octeon/include/mach/cvmx-helper-xaui.h b/arch/mips/mach-octeon/include/mach/cvmx-helper-xaui.h
new file mode 100644
index 0000000000..6ff4576f23
--- /dev/null
+++ b/arch/mips/mach-octeon/include/mach/cvmx-helper-xaui.h
@@ -0,0 +1,108 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Marvell International Ltd.
+ *
+ * Functions for XAUI initialization, configuration,
+ * and monitoring.
+ */
+
+#ifndef __CVMX_HELPER_XAUI_H__
+#define __CVMX_HELPER_XAUI_H__
+
+/**
+ * @INTERNAL
+ * Probe a XAUI interface and determine the number of ports
+ * connected to it. The XAUI interface should still be down
+ * after this call.
+ *
+ * @param xiface Interface to probe
+ *
+ * @return Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_xaui_probe(int xiface);
+int __cvmx_helper_xaui_enumerate(int xiface);
+
+/**
+ * @INTERNAL
+ * Bringup and enable a XAUI interface. After this call packet
+ * I/O should be fully functional. This is called with IPD
+ * enabled but PKO disabled.
+ *
+ * @param xiface Interface to bring up
+ *
+ * @return Zero on success, negative on failure
+ */
+int __cvmx_helper_xaui_enable(int xiface);
+
+/**
+ * Retrain XAUI interface.
+ *
+ * GMX is disabled as part of retraining.
+ * While GMX is disabled, new received packets are dropped.
+ * If GMX was in the middle of recieving a packet when disabled,
+ * that packet will be received before GMX idles.
+ * Transmitted packets are buffered normally, but not sent.
+ * If GMX was in the middle of transmitting a packet when disabled,
+ * that packet will be transmitted before GMX idles.
+ *
+ * @param interface Interface to retrain
+ *
+ * @return Zero on success, negative on failure
+ */
+int cvmx_helper_xaui_link_retrain(int interface);
+
+/**
+ * Reinitialize XAUI interface.  Does a probe without changing the hardware
+ * state.
+ *
+ * @param interface	Interface to reinitialize
+ *
+ * @return	0 on success, negative on failure
+ */
+int cvmx_helper_xaui_link_reinit(int interface);
+
+/**
+ * @INTERNAL
+ * Return the link state of an IPD/PKO port as returned by
+ * auto negotiation. The result of this function may not match
+ * Octeon's link config if auto negotiation has changed since
+ * the last call to cvmx_helper_link_set().
+ *
+ * @param ipd_port IPD/PKO port to query
+ *
+ * @return Link state
+ */
+cvmx_helper_link_info_t __cvmx_helper_xaui_link_get(int ipd_port);
+
+/**
+ * @INTERNAL
+ * Configure an IPD/PKO port for the specified link state. This
+ * function does not influence auto negotiation at the PHY level.
+ * The passed link state must always match the link state returned
+ * by cvmx_helper_link_get(). It is normally best to use
+ * cvmx_helper_link_autoconf() instead.
+ *
+ * @param ipd_port  IPD/PKO port to configure
+ * @param link_info The new link state
+ *
+ * @return Zero on success, negative on failure
+ */
+int __cvmx_helper_xaui_link_set(int ipd_port, cvmx_helper_link_info_t link_info);
+
+/**
+ * @INTERNAL
+ * Configure a port for internal and/or external loopback. Internal loopback
+ * causes packets sent by the port to be received by Octeon. External loopback
+ * causes packets received from the wire to sent out again.
+ *
+ * @param ipd_port IPD/PKO port to loopback.
+ * @param enable_internal
+ *                 Non zero if you want internal loopback
+ * @param enable_external
+ *                 Non zero if you want external loopback
+ *
+ * @return Zero on success, negative on failure.
+ */
+int __cvmx_helper_xaui_configure_loopback(int ipd_port, int enable_internal, int enable_external);
+
+#endif