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, 335 insertions, 0 deletions

diff --git a/arch/mips/mach-octeon/include/mach/cvmx-helper-bgx.h b/arch/mips/mach-octeon/include/mach/cvmx-helper-bgx.h
new file mode 100644
index 0000000000..ead6193ec0
--- /dev/null
+++ b/arch/mips/mach-octeon/include/mach/cvmx-helper-bgx.h
@@ -0,0 +1,335 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Copyright (C) 2020 Marvell International Ltd.
+ *
+ * Functions to configure the BGX MAC.
+ */
+
+#ifndef __CVMX_HELPER_BGX_H__
+#define __CVMX_HELPER_BGX_H__
+
+#define CVMX_BGX_RX_FIFO_SIZE (64 * 1024)
+#define CVMX_BGX_TX_FIFO_SIZE (32 * 1024)
+
+int __cvmx_helper_bgx_enumerate(int xiface);
+
+/**
+ * @INTERNAL
+ * Disable the BGX port
+ *
+ * @param xipd_port IPD port of the BGX interface to disable
+ */
+void cvmx_helper_bgx_disable(int xipd_port);
+
+/**
+ * @INTERNAL
+ * Probe a SGMII interface and determine the number of ports
+ * connected to it. The SGMII/XAUI interface should still be down after
+ * this call. This is used by interfaces using the bgx mac.
+ *
+ * @param xiface Interface to probe
+ *
+ * @return Number of ports on the interface. Zero to disable.
+ */
+int __cvmx_helper_bgx_probe(int xiface);
+
+/**
+ * @INTERNAL
+ * Bringup and enable a SGMII interface. After this call packet
+ * I/O should be fully functional. This is called with IPD
+ * enabled but PKO disabled. This is used by interfaces using the
+ * bgx mac.
+ *
+ * @param xiface Interface to bring up
+ *
+ * @return Zero on success, negative on failure
+ */
+int __cvmx_helper_bgx_sgmii_enable(int xiface);
+
+/**
+ * @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(). This is used by
+ * interfaces using the bgx mac.
+ *
+ * @param xipd_port IPD/PKO port to query
+ *
+ * @return Link state
+ */
+cvmx_helper_link_info_t __cvmx_helper_bgx_sgmii_link_get(int xipd_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. This is used by interfaces
+ * using the bgx mac.
+ *
+ * @param xipd_port  IPD/PKO port to configure
+ * @param link_info The new link state
+ *
+ * @return Zero on success, negative on failure
+ */
+int __cvmx_helper_bgx_sgmii_link_set(int xipd_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. This is used by
+ * interfaces using the bgx mac.
+ *
+ * @param xipd_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_bgx_sgmii_configure_loopback(int xipd_port, int enable_internal,
+					       int enable_external);
+
+/**
+ * @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. This is used by interfaces using the
+ * bgx mac.
+ *
+ * @param xiface Interface to bring up
+ *
+ * @return Zero on success, negative on failure
+ */
+int __cvmx_helper_bgx_xaui_enable(int xiface);
+
+/**
+ * @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(). This is used by
+ * interfaces using the bgx mac.
+ *
+ * @param xipd_port IPD/PKO port to query
+ *
+ * @return Link state
+ */
+cvmx_helper_link_info_t __cvmx_helper_bgx_xaui_link_get(int xipd_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. This is used by interfaces
+ * using the bgx mac.
+ *
+ * @param xipd_port  IPD/PKO port to configure
+ * @param link_info The new link state
+ *
+ * @return Zero on success, negative on failure
+ */
+int __cvmx_helper_bgx_xaui_link_set(int xipd_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. This is used by
+ * interfaces using the bgx mac.
+ *
+ * @param xipd_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_bgx_xaui_configure_loopback(int xipd_port, int enable_internal,
+					      int enable_external);
+
+int __cvmx_helper_bgx_mixed_enable(int xiface);
+
+cvmx_helper_link_info_t __cvmx_helper_bgx_mixed_link_get(int xipd_port);
+
+int __cvmx_helper_bgx_mixed_link_set(int xipd_port, cvmx_helper_link_info_t link_info);
+
+int __cvmx_helper_bgx_mixed_configure_loopback(int xipd_port, int enable_internal,
+					       int enable_external);
+
+cvmx_helper_interface_mode_t cvmx_helper_bgx_get_mode(int xiface, int index);
+
+/**
+ * @INTERNAL
+ * Configure Priority-Based Flow Control (a.k.a. PFC/CBFC)
+ * on a specific BGX interface/port.
+ */
+void __cvmx_helper_bgx_xaui_config_pfc(unsigned int node, unsigned int interface, unsigned int port,
+				       bool pfc_enable);
+
+/**
+ * This function control how the hardware handles incoming PAUSE
+ * packets. The most common modes of operation:
+ * ctl_bck = 1, ctl_drp = 1: hardware handles everything
+ * ctl_bck = 0, ctl_drp = 0: software sees all PAUSE frames
+ * ctl_bck = 0, ctl_drp = 1: all PAUSE frames are completely ignored
+ * @param node		node number.
+ * @param interface	interface number
+ * @param port		port number
+ * @param ctl_bck	1: Forward PAUSE information to TX block
+ * @param ctl_drp	1: Drop control PAUSE frames.
+ */
+void cvmx_helper_bgx_rx_pause_ctl(unsigned int node, unsigned int interface, unsigned int port,
+				  unsigned int ctl_bck, unsigned int ctl_drp);
+
+/**
+ * This function configures the receive action taken for multicast, broadcast
+ * and dmac filter match packets.
+ * @param node		node number.
+ * @param interface	interface number
+ * @param port		port number
+ * @param cam_accept	0: reject packets on dmac filter match
+ *                      1: accept packet on dmac filter match
+ * @param mcast_mode	0x0 = Force reject all multicast packets
+ *                      0x1 = Force accept all multicast packets
+ *                      0x2 = Use the address filter CAM
+ * @param bcast_accept  0 = Reject all broadcast packets
+ *                      1 = Accept all broadcast packets
+ */
+void cvmx_helper_bgx_rx_adr_ctl(unsigned int node, unsigned int interface, unsigned int port,
+				unsigned int cam_accept, unsigned int mcast_mode,
+				unsigned int bcast_accept);
+
+/**
+ * Function to control the generation of FCS, padding by the BGX
+ *
+ */
+void cvmx_helper_bgx_tx_options(unsigned int node, unsigned int interface, unsigned int index,
+				bool fcs_enable, bool pad_enable);
+
+/**
+ * Set mac for the ipd_port
+ *
+ * @param xipd_port ipd_port to set the mac
+ * @param bcst      If set, accept all broadcast packets
+ * @param mcst      Multicast mode
+ *		    0 = Force reject all multicast packets
+ *		    1 = Force accept all multicast packets
+ *		    2 = use the address filter CAM.
+ * @param mac       mac address for the ipd_port
+ */
+void cvmx_helper_bgx_set_mac(int xipd_port, int bcst, int mcst, u64 mac);
+
+int __cvmx_helper_bgx_port_init(int xipd_port, int phy_pres);
+void cvmx_helper_bgx_set_jabber(int xiface, unsigned int index, unsigned int size);
+int cvmx_helper_bgx_shutdown_port(int xiface, int index);
+int cvmx_bgx_set_backpressure_override(int xiface, unsigned int port_mask);
+int __cvmx_helper_bgx_fifo_size(int xiface, unsigned int lmac);
+
+/**
+ * Returns if an interface is RGMII or not
+ *
+ * @param xiface	xinterface to check
+ * @param index		port index (must be 0 for rgmii)
+ *
+ * @return	true if RGMII, false otherwise
+ */
+static inline bool cvmx_helper_bgx_is_rgmii(int xiface, int index)
+{
+	union cvmx_bgxx_cmrx_config cmr_config;
+
+	if (!OCTEON_IS_MODEL(OCTEON_CN73XX) || index != 0)
+		return false;
+	cmr_config.u64 = csr_rd(CVMX_BGXX_CMRX_CONFIG(index, xiface));
+	return cmr_config.s.lmac_type == 5;
+}
+
+/**
+ * Probes the BGX Super Path (SMU/SPU) mode
+ *
+ * @param xiface	global interface number
+ * @param index		interface index
+ *
+ * @return	true, if Super-MAC/PCS mode, false -- otherwise
+ */
+bool cvmx_helper_bgx_is_smu(int xiface, int index);
+
+/**
+ * @INTERNAL
+ * Configure parameters of PAUSE packet.
+ *
+ * @param xipd_port		Global IPD port (node + IPD port).
+ * @param smac			Source MAC address.
+ * @param dmac			Destination MAC address.
+ * @param type			PAUSE packet type.
+ * @param time			Pause time for PAUSE packets (number of 512 bit-times).
+ * @param interval		Interval between PAUSE packets (number of 512 bit-times).
+ * @return Zero on success, negative on failure.
+ */
+int cvmx_bgx_set_pause_pkt_param(int xipd_port, u64 smac, u64 dmac, unsigned int type,
+				 unsigned int time, unsigned int interval);
+
+/**
+ * @INTERNAL
+ * Setup the BGX flow-control mode.
+ *
+ * @param xipd_port		Global IPD port (node + IPD port).
+ * @param type			Flow-control type/protocol.
+ * @param mode			Flow-control mode.
+ * @return Zero on success, negative on failure.
+ */
+int cvmx_bgx_set_flowctl_mode(int xipd_port, cvmx_qos_proto_t qos, cvmx_qos_pkt_mode_t mode);
+
+/**
+ * Enables or disables autonegotiation for an interface.
+ *
+ * @param	xiface	interface to set autonegotiation
+ * @param	index	port index
+ * @param	enable	true to enable autonegotiation, false to disable it
+ *
+ * @return	0 for success, -1 on error.
+ */
+int cvmx_helper_set_autonegotiation(int xiface, int index, bool enable);
+
+/**
+ * Enables or disables forward error correction
+ *
+ * @param	xiface	interface
+ * @param	index	port index
+ * @param	enable	set to true to enable FEC, false to disable
+ *
+ * @return	0 for success, -1 on error
+ *
+ * @NOTE:	If autonegotiation is enabled then autonegotiation will be
+ *		restarted for negotiating FEC.
+ */
+int cvmx_helper_set_fec(int xiface, int index, bool enable);
+
+#ifdef CVMX_DUMP_BGX
+/**
+ * Dump BGX configuration for node 0
+ */
+int cvmx_dump_bgx_config(unsigned int bgx);
+/**
+ * Dump BGX status for node 0
+ */
+int cvmx_dump_bgx_status(unsigned int bgx);
+/**
+ * Dump BGX configuration
+ */
+int cvmx_dump_bgx_config_node(unsigned int node, unsigned int bgx);
+/**
+ * Dump BGX status
+ */
+int cvmx_dump_bgx_status_node(unsigned int node, unsigned int bgx);
+
+#endif
+
+#endif