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