diff options
Diffstat (limited to 'drivers/net/ethernet/broadcom/bnge/bnge_txrx.h')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bnge/bnge_txrx.h | 126 |
1 files changed, 126 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bnge/bnge_txrx.h b/drivers/net/ethernet/broadcom/bnge/bnge_txrx.h new file mode 100644 index 000000000000..bd0aa6c221a4 --- /dev/null +++ b/drivers/net/ethernet/broadcom/bnge/bnge_txrx.h @@ -0,0 +1,126 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* Copyright (c) 2025 Broadcom */ + +#ifndef _BNGE_TXRX_H_ +#define _BNGE_TXRX_H_ + +#include <linux/bnge/hsi.h> +#include "bnge_netdev.h" + +static inline u32 bnge_tx_avail(struct bnge_net *bn, + const struct bnge_tx_ring_info *txr) +{ + u32 used = READ_ONCE(txr->tx_prod) - READ_ONCE(txr->tx_cons); + + return bn->tx_ring_size - (used & bn->tx_ring_mask); +} + +static inline void bnge_writeq_relaxed(struct bnge_dev *bd, u64 val, + void __iomem *addr) +{ +#if BITS_PER_LONG == 32 + spin_lock(&bd->db_lock); + lo_hi_writeq_relaxed(val, addr); + spin_unlock(&bd->db_lock); +#else + writeq_relaxed(val, addr); +#endif +} + +/* For TX and RX ring doorbells with no ordering guarantee*/ +static inline void bnge_db_write_relaxed(struct bnge_net *bn, + struct bnge_db_info *db, u32 idx) +{ + bnge_writeq_relaxed(bn->bd, db->db_key64 | DB_RING_IDX(db, idx), + db->doorbell); +} + +#define TX_OPAQUE_IDX_MASK 0x0000ffff +#define TX_OPAQUE_BDS_MASK 0x00ff0000 +#define TX_OPAQUE_BDS_SHIFT 16 +#define TX_OPAQUE_RING_MASK 0xff000000 +#define TX_OPAQUE_RING_SHIFT 24 + +#define SET_TX_OPAQUE(bn, txr, idx, bds) \ + (((txr)->tx_napi_idx << TX_OPAQUE_RING_SHIFT) | \ + ((bds) << TX_OPAQUE_BDS_SHIFT) | ((idx) & (bn)->tx_ring_mask)) + +#define TX_OPAQUE_IDX(opq) ((opq) & TX_OPAQUE_IDX_MASK) +#define TX_OPAQUE_RING(opq) (((opq) & TX_OPAQUE_RING_MASK) >> \ + TX_OPAQUE_RING_SHIFT) +#define TX_OPAQUE_BDS(opq) (((opq) & TX_OPAQUE_BDS_MASK) >> \ + TX_OPAQUE_BDS_SHIFT) +#define TX_OPAQUE_PROD(bn, opq) ((TX_OPAQUE_IDX(opq) + TX_OPAQUE_BDS(opq)) &\ + (bn)->tx_ring_mask) +#define TX_BD_CNT(n) (((n) << TX_BD_FLAGS_BD_CNT_SHIFT) & TX_BD_FLAGS_BD_CNT) + +#define TX_MAX_BD_CNT 32 + +#define TX_MAX_FRAGS (TX_MAX_BD_CNT - 2) + +/* Minimum TX BDs for a TX packet with MAX_SKB_FRAGS + 1. We need one extra + * BD because the first TX BD is always a long BD. + */ +#define BNGE_MIN_TX_DESC_CNT (MAX_SKB_FRAGS + 2) + +#define RX_RING(bn, x) (((x) & (bn)->rx_ring_mask) >> (BNGE_PAGE_SHIFT - 4)) +#define RX_AGG_RING(bn, x) (((x) & (bn)->rx_agg_ring_mask) >> \ + (BNGE_PAGE_SHIFT - 4)) +#define RX_IDX(x) ((x) & (RX_DESC_CNT - 1)) + +#define TX_RING(bn, x) (((x) & (bn)->tx_ring_mask) >> (BNGE_PAGE_SHIFT - 4)) +#define TX_IDX(x) ((x) & (TX_DESC_CNT - 1)) + +#define CP_RING(x) (((x) & ~(CP_DESC_CNT - 1)) >> (BNGE_PAGE_SHIFT - 4)) +#define CP_IDX(x) ((x) & (CP_DESC_CNT - 1)) + +#define TX_CMP_VALID(bn, txcmp, raw_cons) \ + (!!((txcmp)->tx_cmp_errors_v & cpu_to_le32(TX_CMP_V)) == \ + !((raw_cons) & (bn)->cp_bit)) + +#define RX_CMP_VALID(bn, rxcmp1, raw_cons) \ + (!!((rxcmp1)->rx_cmp_cfa_code_errors_v2 & cpu_to_le32(RX_CMP_V)) ==\ + !((raw_cons) & (bn)->cp_bit)) + +#define RX_AGG_CMP_VALID(bn, agg, raw_cons) \ + (!!((agg)->rx_agg_cmp_v & cpu_to_le32(RX_AGG_CMP_V)) == \ + !((raw_cons) & (bn)->cp_bit)) + +#define NQ_CMP_VALID(bn, nqcmp, raw_cons) \ + (!!((nqcmp)->v & cpu_to_le32(NQ_CN_V)) == !((raw_cons) & (bn)->cp_bit)) + +#define TX_CMP_TYPE(txcmp) \ + (le32_to_cpu((txcmp)->tx_cmp_flags_type) & CMP_TYPE) + +#define RX_CMP_TYPE(rxcmp) \ + (le32_to_cpu((rxcmp)->rx_cmp_len_flags_type) & RX_CMP_CMP_TYPE) + +#define RING_RX(bn, idx) ((idx) & (bn)->rx_ring_mask) +#define NEXT_RX(idx) ((idx) + 1) + +#define RING_RX_AGG(bn, idx) ((idx) & (bn)->rx_agg_ring_mask) +#define NEXT_RX_AGG(idx) ((idx) + 1) + +#define SW_TX_RING(bn, idx) ((idx) & (bn)->tx_ring_mask) +#define NEXT_TX(idx) ((idx) + 1) + +#define ADV_RAW_CMP(idx, n) ((idx) + (n)) +#define NEXT_RAW_CMP(idx) ADV_RAW_CMP(idx, 1) +#define RING_CMP(bn, idx) ((idx) & (bn)->cp_ring_mask) +#define NEXT_CMP(bn, idx) RING_CMP(bn, ADV_RAW_CMP(idx, 1)) + +#define RX_CMP_ITYPES(rxcmp) \ + (le32_to_cpu((rxcmp)->rx_cmp_len_flags_type) & RX_CMP_FLAGS_ITYPES_MASK) + +#define RX_CMP_CFA_CODE(rxcmpl1) \ + ((le32_to_cpu((rxcmpl1)->rx_cmp_cfa_code_errors_v2) & \ + RX_CMPL_CFA_CODE_MASK) >> RX_CMPL_CFA_CODE_SFT) + +irqreturn_t bnge_msix(int irq, void *dev_instance); +netdev_tx_t bnge_start_xmit(struct sk_buff *skb, struct net_device *dev); +void bnge_reuse_rx_data(struct bnge_rx_ring_info *rxr, u16 cons, void *data); +int bnge_napi_poll(struct napi_struct *napi, int budget); +netdev_features_t bnge_features_check(struct sk_buff *skb, + struct net_device *dev, + netdev_features_t features); +#endif /* _BNGE_TXRX_H_ */ |