/* SPDX-License-Identifier: GPL-2.0 */ /* Copyright (c) Meta Platforms, Inc. and affiliates. */ #ifndef _FBNIC_MAC_H_ #define _FBNIC_MAC_H_ #include <linux/types.h> struct fbnic_dev; #define FBNIC_MAX_JUMBO_FRAME_SIZE 9742 enum { FBNIC_LINK_EVENT_NONE = 0, FBNIC_LINK_EVENT_UP = 1, FBNIC_LINK_EVENT_DOWN = 2, }; /* Treat the FEC bits as a bitmask laid out as follows: * Bit 0: RS Enabled * Bit 1: BASER(Firecode) Enabled * Bit 2: Retrieve FEC from FW */ enum { FBNIC_FEC_OFF = 0, FBNIC_FEC_RS = 1, FBNIC_FEC_BASER = 2, FBNIC_FEC_AUTO = 4, }; #define FBNIC_FEC_MODE_MASK (FBNIC_FEC_AUTO - 1) /* Treat the link modes as a set of modulation/lanes bitmask: * Bit 0: Lane Count, 0 = R1, 1 = R2 * Bit 1: Modulation, 0 = NRZ, 1 = PAM4 * Bit 2: Retrieve link mode from FW */ enum { FBNIC_LINK_25R1 = 0, FBNIC_LINK_50R2 = 1, FBNIC_LINK_50R1 = 2, FBNIC_LINK_100R2 = 3, FBNIC_LINK_AUTO = 4, }; #define FBNIC_LINK_MODE_R2 (FBNIC_LINK_50R2) #define FBNIC_LINK_MODE_PAM4 (FBNIC_LINK_50R1) #define FBNIC_LINK_MODE_MASK (FBNIC_LINK_AUTO - 1) enum fbnic_sensor_id { FBNIC_SENSOR_TEMP, /* Temp in millidegrees Centigrade */ FBNIC_SENSOR_VOLTAGE, /* Voltage in millivolts */ }; /* This structure defines the interface hooks for the MAC. The MAC hooks * will be configured as a const struct provided with a set of function * pointers. * * void (*init_regs)(struct fbnic_dev *fbd); * Initialize MAC registers to enable Tx/Rx paths and FIFOs. * * void (*pcs_enable)(struct fbnic_dev *fbd); * Configure and enable PCS to enable link if not already enabled * void (*pcs_disable)(struct fbnic_dev *fbd); * Shutdown the link if we are the only consumer of it. * bool (*pcs_get_link)(struct fbnic_dev *fbd); * Check PCS link status * int (*pcs_get_link_event)(struct fbnic_dev *fbd) * Get the current link event status, reports true if link has * changed to either FBNIC_LINK_EVENT_DOWN or FBNIC_LINK_EVENT_UP * * void (*link_down)(struct fbnic_dev *fbd); * Configure MAC for link down event * void (*link_up)(struct fbnic_dev *fbd, bool tx_pause, bool rx_pause); * Configure MAC for link up event; * */ struct fbnic_mac { void (*init_regs)(struct fbnic_dev *fbd); int (*pcs_enable)(struct fbnic_dev *fbd); void (*pcs_disable)(struct fbnic_dev *fbd); bool (*pcs_get_link)(struct fbnic_dev *fbd); int (*pcs_get_link_event)(struct fbnic_dev *fbd); void (*get_eth_mac_stats)(struct fbnic_dev *fbd, bool reset, struct fbnic_eth_mac_stats *mac_stats); void (*link_down)(struct fbnic_dev *fbd); void (*link_up)(struct fbnic_dev *fbd, bool tx_pause, bool rx_pause); int (*get_sensor)(struct fbnic_dev *fbd, int id, long *val); }; int fbnic_mac_init(struct fbnic_dev *fbd); #endif /* _FBNIC_MAC_H_ */