arch/mips/include/asm/octeon/cvmx-helper-board.h

Source file repositories/reference/linux-study-clean/arch/mips/include/asm/octeon/cvmx-helper-board.h

File Facts

System
Linux kernel
Corpus path
arch/mips/include/asm/octeon/cvmx-helper-board.h
Extension
.h
Size
4671 bytes
Lines
125
Domain
Architecture Layer
Bucket
arch/mips
Inferred role
Architecture Layer: implementation source
Status
source implementation candidate

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

#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

/**
 * 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 modified for every new Octeon board.
 * Internally it uses switch statements based on the cvmx_sysinfo
 * data to determine board types and revisions. It relies 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 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 modified for every new Octeon board.
 * Internally it uses switch statements based on the cvmx_sysinfo
 * data to determine board types and revisions. It relies 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 union cvmx_helper_link_info __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 modified for every new Octeon board.
 * Internally it uses switch statements based on the cvmx_sysinfo
 * data to determine board types and revisions. It relies 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);

enum cvmx_helper_board_usb_clock_types __cvmx_helper_board_usb_get_clock_type(void);

Annotation

Implementation Notes