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/* SPDX-License-Identifier: GPL-2.0
* Marvell OcteonTx2 CGX driver
*
* Copyright (C) 2018 Marvell International Ltd.
*
* This program 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.
*/
#ifndef __CGX_FW_INTF_H__
#define __CGX_FW_INTF_H__
#include <linux/bitops.h>
#include <linux/bitfield.h>
#define CGX_FIRMWARE_MAJOR_VER 1
#define CGX_FIRMWARE_MINOR_VER 0
#define CGX_EVENT_ACK 1UL
/* CGX error types. set for cmd response status as CGX_STAT_FAIL */
enum cgx_error_type {
CGX_ERR_NONE,
CGX_ERR_LMAC_NOT_ENABLED,
CGX_ERR_LMAC_MODE_INVALID,
CGX_ERR_REQUEST_ID_INVALID,
CGX_ERR_PREV_ACK_NOT_CLEAR,
CGX_ERR_PHY_LINK_DOWN,
CGX_ERR_PCS_RESET_FAIL,
CGX_ERR_AN_CPT_FAIL,
CGX_ERR_TX_NOT_IDLE,
CGX_ERR_RX_NOT_IDLE,
CGX_ERR_SPUX_BR_BLKLOCK_FAIL,
CGX_ERR_SPUX_RX_ALIGN_FAIL,
CGX_ERR_SPUX_TX_FAULT,
CGX_ERR_SPUX_RX_FAULT,
CGX_ERR_SPUX_RESET_FAIL,
CGX_ERR_SPUX_AN_RESET_FAIL,
CGX_ERR_SPUX_USX_AN_RESET_FAIL,
CGX_ERR_SMUX_RX_LINK_NOT_OK,
CGX_ERR_PCS_RECV_LINK_FAIL,
CGX_ERR_TRAINING_FAIL,
CGX_ERR_RX_EQU_FAIL,
CGX_ERR_SPUX_BER_FAIL,
CGX_ERR_SPUX_RSFEC_ALGN_FAIL, /* = 22 */
};
/* LINK speed types */
enum cgx_link_speed {
CGX_LINK_NONE,
CGX_LINK_10M,
CGX_LINK_100M,
CGX_LINK_1G,
CGX_LINK_2HG,
CGX_LINK_5G,
CGX_LINK_10G,
CGX_LINK_20G,
CGX_LINK_25G,
CGX_LINK_40G,
CGX_LINK_50G,
CGX_LINK_100G,
CGX_LINK_SPEED_MAX,
};
/* REQUEST ID types. Input to firmware */
enum cgx_cmd_id {
CGX_CMD_NONE,
CGX_CMD_GET_FW_VER,
CGX_CMD_GET_MAC_ADDR,
CGX_CMD_SET_MTU,
CGX_CMD_GET_LINK_STS, /* optional to user */
CGX_CMD_LINK_BRING_UP,
CGX_CMD_LINK_BRING_DOWN,
CGX_CMD_INTERNAL_LBK,
CGX_CMD_EXTERNAL_LBK,
CGX_CMD_HIGIG,
CGX_CMD_LINK_STATE_CHANGE,
CGX_CMD_MODE_CHANGE, /* hot plug support */
CGX_CMD_INTF_SHUTDOWN,
CGX_CMD_IRQ_ENABLE,
CGX_CMD_IRQ_DISABLE,
};
/* async event ids */
enum cgx_evt_id {
CGX_EVT_NONE,
CGX_EVT_LINK_CHANGE,
};
/* event types - cause of interrupt */
enum cgx_evt_type {
CGX_EVT_ASYNC,
CGX_EVT_CMD_RESP
};
enum cgx_stat {
CGX_STAT_SUCCESS,
CGX_STAT_FAIL
};
enum cgx_cmd_own {
CGX_CMD_OWN_NS,
CGX_CMD_OWN_FIRMWARE,
};
/* m - bit mask
* y - value to be written in the bitrange
* x - input value whose bitrange to be modified
*/
#define FIELD_SET(m, y, x) \
(((x) & ~(m)) | \
FIELD_PREP((m), (y)))
/* scratchx(0) CSR used for ATF->non-secure SW communication.
* This acts as the status register
* Provides details on command ack/status, command response, error details
*/
#define EVTREG_ACK BIT_ULL(0)
#define EVTREG_EVT_TYPE BIT_ULL(1)
#define EVTREG_STAT BIT_ULL(2)
#define EVTREG_ID GENMASK_ULL(8, 3)
/* Response to command IDs with command status as CGX_STAT_FAIL
*
* Not applicable for commands :
* CGX_CMD_LINK_BRING_UP/DOWN/CGX_EVT_LINK_CHANGE
*/
#define EVTREG_ERRTYPE GENMASK_ULL(18, 9)
/* Response to cmd ID as CGX_CMD_GET_FW_VER with cmd status as
* CGX_STAT_SUCCESS
*/
#define RESP_MAJOR_VER GENMASK_ULL(12, 9)
#define RESP_MINOR_VER GENMASK_ULL(16, 13)
/* Response to cmd ID as CGX_CMD_GET_MAC_ADDR with cmd status as
* CGX_STAT_SUCCESS
*/
#define RESP_MAC_ADDR GENMASK_ULL(56, 9)
/* Response to cmd ID - CGX_CMD_LINK_BRING_UP/DOWN, event ID CGX_EVT_LINK_CHANGE
* status can be either CGX_STAT_FAIL or CGX_STAT_SUCCESS
*
* In case of CGX_STAT_FAIL, it indicates CGX configuration failed
* when processing link up/down/change command.
* Both err_type and current link status will be updated
*
* In case of CGX_STAT_SUCCESS, err_type will be CGX_ERR_NONE and current
* link status will be updated
*/
struct cgx_lnk_sts {
uint64_t reserved1:9;
uint64_t link_up:1;
uint64_t full_duplex:1;
uint64_t speed:4; /* cgx_link_speed */
uint64_t err_type:10;
uint64_t reserved2:39;
};
#define RESP_LINKSTAT_UP GENMASK_ULL(9, 9)
#define RESP_LINKSTAT_FDUPLEX GENMASK_ULL(10, 10)
#define RESP_LINKSTAT_SPEED GENMASK_ULL(14, 11)
#define RESP_LINKSTAT_ERRTYPE GENMASK_ULL(24, 15)
/* scratchx(1) CSR used for non-secure SW->ATF communication
* This CSR acts as a command register
*/
#define CMDREG_OWN BIT_ULL(0)
#define CMDREG_ID GENMASK_ULL(7, 2)
/* Any command using enable/disable as an argument need
* to set this bitfield.
* Ex: Loopback, HiGig...
*/
#define CMDREG_ENABLE BIT_ULL(8)
/* command argument to be passed for cmd ID - CGX_CMD_SET_MTU */
#define CMDMTU_SIZE GENMASK_ULL(23, 8)
/* command argument to be passed for cmd ID - CGX_CMD_LINK_CHANGE */
#define CMDLINKCHANGE_LINKUP BIT_ULL(8)
#define CMDLINKCHANGE_FULLDPLX BIT_ULL(9)
#define CMDLINKCHANGE_SPEED GENMASK_ULL(13, 10)
#endif /* __CGX_FW_INTF_H__ */
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