diff options
Diffstat (limited to 'drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h')
| -rw-r--r-- | drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 112 |
1 files changed, 99 insertions, 13 deletions
diff --git a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h index 447718483ef4..d56d7a13262e 100644 --- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h +++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h @@ -1,6 +1,6 @@ /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ /* Copyright 2014-2016 Freescale Semiconductor Inc. - * Copyright 2016-2020 NXP + * Copyright 2016-2022 NXP */ #ifndef __DPAA2_ETH_H @@ -53,6 +53,12 @@ */ #define DPAA2_ETH_TXCONF_PER_NAPI 256 +/* Maximum number of Tx frames to be processed in a single NAPI + * call when AF_XDP is running. Bind it to DPAA2_ETH_TXCONF_PER_NAPI + * to maximize the throughput. + */ +#define DPAA2_ETH_TX_ZC_PER_NAPI DPAA2_ETH_TXCONF_PER_NAPI + /* Buffer qouta per channel. We want to keep in check number of ingress frames * in flight: for small sized frames, congestion group taildrop may kick in * first; for large sizes, Rx FQ taildrop threshold will ensure only a @@ -109,6 +115,14 @@ #define DPAA2_ETH_RX_BUF_ALIGN_REV1 256 #define DPAA2_ETH_RX_BUF_ALIGN 64 +/* The firmware allows assigning multiple buffer pools to a single DPNI - + * maximum 8 DPBP objects. By default, only the first DPBP (idx 0) is used for + * all queues. Thus, when enabling AF_XDP we must accommodate up to 9 DPBPs + * object: the default and 8 other distinct buffer pools, one for each queue. + */ +#define DPAA2_ETH_DEFAULT_BP_IDX 0 +#define DPAA2_ETH_MAX_BPS 9 + /* We are accommodating a skb backpointer and some S/G info * in the frame's software annotation. The hardware * options are either 0 or 64, so we choose the latter. @@ -122,6 +136,7 @@ enum dpaa2_eth_swa_type { DPAA2_ETH_SWA_SINGLE, DPAA2_ETH_SWA_SG, DPAA2_ETH_SWA_XDP, + DPAA2_ETH_SWA_XSK, DPAA2_ETH_SWA_SW_TSO, }; @@ -144,6 +159,10 @@ struct dpaa2_eth_swa { struct xdp_frame *xdpf; } xdp; struct { + struct xdp_buff *xdp_buff; + int sgt_size; + } xsk; + struct { struct sk_buff *skb; int num_sg; int sgt_size; @@ -421,12 +440,19 @@ enum dpaa2_eth_fq_type { }; struct dpaa2_eth_priv; +struct dpaa2_eth_channel; +struct dpaa2_eth_fq; struct dpaa2_eth_xdp_fds { struct dpaa2_fd fds[DEV_MAP_BULK_SIZE]; ssize_t num; }; +typedef void dpaa2_eth_consume_cb_t(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_channel *ch, + const struct dpaa2_fd *fd, + struct dpaa2_eth_fq *fq); + struct dpaa2_eth_fq { u32 fqid; u32 tx_qdbin; @@ -439,10 +465,7 @@ struct dpaa2_eth_fq { struct dpaa2_eth_channel *channel; enum dpaa2_eth_fq_type type; - void (*consume)(struct dpaa2_eth_priv *priv, - struct dpaa2_eth_channel *ch, - const struct dpaa2_fd *fd, - struct dpaa2_eth_fq *fq); + dpaa2_eth_consume_cb_t *consume; struct dpaa2_eth_fq_stats stats; struct dpaa2_eth_xdp_fds xdp_redirect_fds; @@ -454,6 +477,11 @@ struct dpaa2_eth_ch_xdp { unsigned int res; }; +struct dpaa2_eth_bp { + struct fsl_mc_device *dev; + int bpid; +}; + struct dpaa2_eth_channel { struct dpaa2_io_notification_ctx nctx; struct fsl_mc_device *dpcon; @@ -472,6 +500,11 @@ struct dpaa2_eth_channel { /* Buffers to be recycled back in the buffer pool */ u64 recycled_bufs[DPAA2_ETH_BUFS_PER_CMD]; int recycled_bufs_cnt; + + bool xsk_zc; + int xsk_tx_pkts_sent; + struct xsk_buff_pool *xsk_pool; + struct dpaa2_eth_bp *bp; }; struct dpaa2_eth_dist_fields { @@ -506,7 +539,7 @@ struct dpaa2_eth_trap_data { #define DPAA2_ETH_DEFAULT_COPYBREAK 512 -#define DPAA2_ETH_ENQUEUE_MAX_FDS 200 +#define DPAA2_ETH_ENQUEUE_MAX_FDS 256 struct dpaa2_eth_fds { struct dpaa2_fd array[DPAA2_ETH_ENQUEUE_MAX_FDS]; }; @@ -535,14 +568,16 @@ struct dpaa2_eth_priv { u8 ptp_correction_off; void (*dpaa2_set_onestep_params_cb)(struct dpaa2_eth_priv *priv, u32 offset, u8 udp); - struct fsl_mc_device *dpbp_dev; u16 rx_buf_size; - u16 bpid; struct iommu_domain *iommu_domain; enum hwtstamp_tx_types tx_tstamp_type; /* Tx timestamping type */ bool rx_tstamp; /* Rx timestamping enabled */ + /* Buffer pool management */ + struct dpaa2_eth_bp *bp[DPAA2_ETH_MAX_BPS]; + int num_bps; + u16 tx_qdid; struct fsl_mc_io *mc_io; /* Cores which have an affine DPIO/DPCON. @@ -580,6 +615,8 @@ struct dpaa2_eth_priv { #endif struct dpaa2_mac *mac; + /* Serializes changes to priv->mac */ + struct mutex mac_lock; struct workqueue_struct *dpaa2_ptp_wq; struct work_struct tx_onestep_tstamp; struct sk_buff_head tx_skbs; @@ -733,16 +770,15 @@ static inline unsigned int dpaa2_eth_rx_head_room(struct dpaa2_eth_priv *priv) static inline bool dpaa2_eth_is_type_phy(struct dpaa2_eth_priv *priv) { - if (priv->mac && - (priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY || - priv->mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE)) - return true; + lockdep_assert_held(&priv->mac_lock); - return false; + return dpaa2_mac_is_type_phy(priv->mac); } static inline bool dpaa2_eth_has_mac(struct dpaa2_eth_priv *priv) { + lockdep_assert_held(&priv->mac_lock); + return priv->mac ? true : false; } @@ -771,4 +807,54 @@ void dpaa2_eth_dl_traps_unregister(struct dpaa2_eth_priv *priv); struct dpaa2_eth_trap_item *dpaa2_eth_dl_get_trap(struct dpaa2_eth_priv *priv, struct dpaa2_fapr *fapr); + +struct dpaa2_eth_bp *dpaa2_eth_allocate_dpbp(struct dpaa2_eth_priv *priv); +void dpaa2_eth_free_dpbp(struct dpaa2_eth_priv *priv, struct dpaa2_eth_bp *bp); + +struct sk_buff *dpaa2_eth_alloc_skb(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_channel *ch, + const struct dpaa2_fd *fd, u32 fd_length, + void *fd_vaddr); + +void dpaa2_eth_receive_skb(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_channel *ch, + const struct dpaa2_fd *fd, void *vaddr, + struct dpaa2_eth_fq *fq, + struct rtnl_link_stats64 *percpu_stats, + struct sk_buff *skb); + +void dpaa2_eth_rx(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_channel *ch, + const struct dpaa2_fd *fd, + struct dpaa2_eth_fq *fq); + +struct dpaa2_eth_bp *dpaa2_eth_allocate_dpbp(struct dpaa2_eth_priv *priv); +void dpaa2_eth_free_dpbp(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_bp *bp); + +void *dpaa2_iova_to_virt(struct iommu_domain *domain, dma_addr_t iova_addr); +void dpaa2_eth_recycle_buf(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_channel *ch, + dma_addr_t addr); + +void dpaa2_eth_xdp_enqueue(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_channel *ch, + struct dpaa2_fd *fd, + void *buf_start, u16 queue_id); + +int dpaa2_xsk_wakeup(struct net_device *dev, u32 qid, u32 flags); +int dpaa2_xsk_setup_pool(struct net_device *dev, struct xsk_buff_pool *pool, u16 qid); + +void dpaa2_eth_free_tx_fd(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_channel *ch, + struct dpaa2_eth_fq *fq, + const struct dpaa2_fd *fd, bool in_napi); +bool dpaa2_xsk_tx(struct dpaa2_eth_priv *priv, + struct dpaa2_eth_channel *ch); + +/* SGT (Scatter-Gather Table) cache management */ +void *dpaa2_eth_sgt_get(struct dpaa2_eth_priv *priv); + +void dpaa2_eth_sgt_recycle(struct dpaa2_eth_priv *priv, void *sgt_buf); + #endif /* __DPAA2_H */ |