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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright 2018 NXP
*/
#ifndef _ENETC_H_
#define _ENETC_H_
#include <rte_time.h>
#include "base/enetc_hw.h"
#define PCI_VENDOR_ID_FREESCALE 0x1957
/* Max TX rings per ENETC. */
#define MAX_TX_RINGS 2
/* Max RX rings per ENTEC. */
#define MAX_RX_RINGS 1
/* Max BD counts per Ring. */
#define MAX_BD_COUNT 64000
/* Min BD counts per Ring. */
#define MIN_BD_COUNT 32
/* BD ALIGN */
#define BD_ALIGN 8
/*
* upper_32_bits - return bits 32-63 of a number
* @n: the number we're accessing
*
* A basic shift-right of a 64- or 32-bit quantity. Use this to suppress
* the "right shift count >= width of type" warning when that quantity is
* 32-bits.
*/
#define upper_32_bits(n) ((uint32_t)(((n) >> 16) >> 16))
/*
* lower_32_bits - return bits 0-31 of a number
* @n: the number we're accessing
*/
#define lower_32_bits(n) ((uint32_t)(n))
#define ENETC_TXBD(BDR, i) (&(((struct enetc_tx_bd *)((BDR).bd_base))[i]))
#define ENETC_RXBD(BDR, i) (&(((union enetc_rx_bd *)((BDR).bd_base))[i]))
struct enetc_swbd {
struct rte_mbuf *buffer_addr;
};
struct enetc_bdr {
struct rte_eth_dev *ndev;
struct rte_mempool *mb_pool; /* mbuf pool to populate RX ring. */
void *bd_base; /* points to Rx or Tx BD ring */
union {
void *tcir;
void *rcir;
};
uint16_t index;
int bd_count; /* # of BDs */
int next_to_use;
int next_to_clean;
struct enetc_swbd *q_swbd;
union {
void *tcisr; /* Tx */
int next_to_alloc; /* Rx */
};
};
/*
* Structure to store private data for each driver instance (for each port).
*/
struct enetc_eth_adapter {
struct rte_eth_dev *ndev;
struct enetc_eth_hw hw;
};
#define ENETC_DEV_PRIVATE(adapter) \
((struct enetc_eth_adapter *)adapter)
#define ENETC_DEV_PRIVATE_TO_HW(adapter) \
(&((struct enetc_eth_adapter *)adapter)->hw)
#define ENETC_DEV_PRIVATE_TO_STATS(adapter) \
(&((struct enetc_eth_adapter *)adapter)->stats)
#define ENETC_DEV_PRIVATE_TO_INTR(adapter) \
(&((struct enetc_eth_adapter *)adapter)->intr)
#define ENETC_GET_HW_ADDR(reg, addr) ((void *)(((size_t)reg) + (addr)))
#define ENETC_REG_READ(addr) (*(uint32_t *)addr)
#define ENETC_REG_WRITE(addr, val) (*(uint32_t *)addr = val)
#define ENETC_REG_WRITE_RELAXED(addr, val) (*(uint32_t *)addr = val)
/*
* RX/TX ENETC function prototypes
*/
uint16_t enetc_xmit_pkts(void *txq, struct rte_mbuf **tx_pkts,
uint16_t nb_pkts);
uint16_t enetc_recv_pkts(void *rxq, struct rte_mbuf **rx_pkts,
uint16_t nb_pkts);
int enetc_refill_rx_ring(struct enetc_bdr *rx_ring, const int buff_cnt);
static inline int
enetc_bd_unused(struct enetc_bdr *bdr)
{
if (bdr->next_to_clean > bdr->next_to_use)
return bdr->next_to_clean - bdr->next_to_use - 1;
return bdr->bd_count + bdr->next_to_clean - bdr->next_to_use - 1;
}
#endif /* _ENETC_H_ */
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