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kernel/linux-rt-4.4.41/arch/mips/include/asm/octeon/cvmx-helper-board.h 6.07 KB
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  /***********************license start***************
   * Author: Cavium Networks
   *
   * Contact: support@caviumnetworks.com
   * This file is part of the OCTEON SDK
   *
   * Copyright (c) 2003-2008 Cavium Networks
   *
   * This file is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License, Version 2, as
   * published by the Free Software Foundation.
   *
   * This file is distributed in the hope that it will be useful, but
   * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
   * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
   * NONINFRINGEMENT.  See the GNU General Public License for more
   * details.
   *
   * You should have received a copy of the GNU General Public License
   * along with this file; if not, write to the Free Software
   * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
   * or visit http://www.gnu.org/licenses/.
   *
   * This file may also be available under a different license from Cavium.
   * Contact Cavium Networks for more information
   ***********************license end**************************************/
  
  /**
   *
   * Helper functions to abstract board specific data about
   * network ports from the rest of the cvmx-helper files.
   *
   */
  #ifndef __CVMX_HELPER_BOARD_H__
  #define __CVMX_HELPER_BOARD_H__
  
  #include <asm/octeon/cvmx-helper.h>
  
  enum cvmx_helper_board_usb_clock_types {
  	USB_CLOCK_TYPE_REF_12,
  	USB_CLOCK_TYPE_REF_24,
  	USB_CLOCK_TYPE_REF_48,
  	USB_CLOCK_TYPE_CRYSTAL_12,
  };
  
  typedef enum {
  	set_phy_link_flags_autoneg = 0x1,
  	set_phy_link_flags_flow_control_dont_touch = 0x0 << 1,
  	set_phy_link_flags_flow_control_enable = 0x1 << 1,
  	set_phy_link_flags_flow_control_disable = 0x2 << 1,
  	set_phy_link_flags_flow_control_mask = 0x3 << 1,	/* Mask for 2 bit wide flow control field */
  } cvmx_helper_board_set_phy_link_flags_types_t;
  
  /*
   * Fake IPD port, the RGMII/MII interface may use different PHY, use
   * this macro to return appropriate MIX address to read the PHY.
   */
  #define CVMX_HELPER_BOARD_MGMT_IPD_PORT	    -10
  
  /**
   * cvmx_override_board_link_get(int ipd_port) is a function
   * pointer. It is meant to allow customization of the process of
   * talking to a PHY to determine link speed. It is called every
   * time a PHY must be polled for link status. Users should set
   * this pointer to a function before calling any cvmx-helper
   * operations.
   */
  extern cvmx_helper_link_info_t(*cvmx_override_board_link_get) (int ipd_port);
  
  /**
   * Return the MII PHY address associated with the given IPD
   * port. A result of -1 means there isn't a MII capable PHY
   * connected to this port. On chips supporting multiple MII
   * busses the bus number is encoded in bits <15:8>.
   *
   * This function must be modifed for every new Octeon board.
   * Internally it uses switch statements based on the cvmx_sysinfo
   * data to determine board types and revisions. It relys on the
   * fact that every Octeon board receives a unique board type
   * enumeration from the bootloader.
   *
   * @ipd_port: Octeon IPD port to get the MII address for.
   *
   * Returns MII PHY address and bus number or -1.
   */
  extern int cvmx_helper_board_get_mii_address(int ipd_port);
  
  /**
   * This function as a board specific method of changing the PHY
   * speed, duplex, and autonegotiation. This programs the PHY and
   * not Octeon. This can be used to force Octeon's links to
   * specific settings.
   *
   * @phy_addr:  The address of the PHY to program
   * @link_flags:
   *		    Flags to control autonegotiation.  Bit 0 is autonegotiation
   *		    enable/disable to maintain backware compatibility.
   * @link_info: Link speed to program. If the speed is zero and autonegotiation
   *		    is enabled, all possible negotiation speeds are advertised.
   *
   * Returns Zero on success, negative on failure
   */
  int cvmx_helper_board_link_set_phy(int phy_addr,
  				   cvmx_helper_board_set_phy_link_flags_types_t
  				   link_flags,
  				   cvmx_helper_link_info_t link_info);
  
  /**
   * This function is the board specific method of determining an
   * ethernet ports link speed. Most Octeon boards have Marvell PHYs
   * and are handled by the fall through case. This function must be
   * updated for boards that don't have the normal Marvell PHYs.
   *
   * This function must be modifed for every new Octeon board.
   * Internally it uses switch statements based on the cvmx_sysinfo
   * data to determine board types and revisions. It relys on the
   * fact that every Octeon board receives a unique board type
   * enumeration from the bootloader.
   *
   * @ipd_port: IPD input port associated with the port we want to get link
   *		   status for.
   *
   * Returns The ports link status. If the link isn't fully resolved, this must
   *	   return zero.
   */
  extern cvmx_helper_link_info_t __cvmx_helper_board_link_get(int ipd_port);
  
  /**
   * This function is called by cvmx_helper_interface_probe() after it
   * determines the number of ports Octeon can support on a specific
   * interface. This function is the per board location to override
   * this value. It is called with the number of ports Octeon might
   * support and should return the number of actual ports on the
   * board.
   *
   * This function must be modifed for every new Octeon board.
   * Internally it uses switch statements based on the cvmx_sysinfo
   * data to determine board types and revisions. It relys on the
   * fact that every Octeon board receives a unique board type
   * enumeration from the bootloader.
   *
   * @interface: Interface to probe
   * @supported_ports:
   *		    Number of ports Octeon supports.
   *
   * Returns Number of ports the actual board supports. Many times this will
   *	   simple be "support_ports".
   */
  extern int __cvmx_helper_board_interface_probe(int interface,
  					       int supported_ports);
  
  /**
   * Enable packet input/output from the hardware. This function is
   * called after by cvmx_helper_packet_hardware_enable() to
   * perform board specific initialization. For most boards
   * nothing is needed.
   *
   * @interface: Interface to enable
   *
   * Returns Zero on success, negative on failure
   */
  extern int __cvmx_helper_board_hardware_enable(int interface);
  
  enum cvmx_helper_board_usb_clock_types __cvmx_helper_board_usb_get_clock_type(void);
  
  #endif /* __CVMX_HELPER_BOARD_H__ */