| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Claudiu Manoil | 1390 | 57.72% | 10 | 21.28% |
| Po Liu | 560 | 23.26% | 8 | 17.02% |
| Vladimir Oltean | 318 | 13.21% | 21 | 44.68% |
| Yangbo Lu | 84 | 3.49% | 4 | 8.51% |
| Camelia Groza | 41 | 1.70% | 1 | 2.13% |
| Ioana Ciornei | 8 | 0.33% | 1 | 2.13% |
| Michael Walle | 6 | 0.25% | 1 | 2.13% |
| Gustavo A. R. Silva | 1 | 0.04% | 1 | 2.13% |
| Total | 2408 | 47 |
/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */ /* Copyright 2017-2019 NXP */ #include <linux/timer.h> #include <linux/pci.h> #include <linux/netdevice.h> #include <linux/etherdevice.h> #include <linux/dma-mapping.h> #include <linux/skbuff.h> #include <linux/ethtool.h> #include <linux/if_vlan.h> #include <linux/phylink.h> #include <linux/dim.h> #include "enetc_hw.h" #define ENETC_MAC_MAXFRM_SIZE 9600 #define ENETC_MAX_MTU (ENETC_MAC_MAXFRM_SIZE - \ (ETH_FCS_LEN + ETH_HLEN + VLAN_HLEN)) #define ENETC_CBD_DATA_MEM_ALIGN 64 struct enetc_tx_swbd { union { struct sk_buff *skb; struct xdp_frame *xdp_frame; }; dma_addr_t dma; struct page *page; /* valid only if is_xdp_tx */ u16 page_offset; /* valid only if is_xdp_tx */ u16 len; enum dma_data_direction dir; u8 is_dma_page:1; u8 check_wb:1; u8 do_twostep_tstamp:1; u8 is_eof:1; u8 is_xdp_tx:1; u8 is_xdp_redirect:1; u8 qbv_en:1; }; #define ENETC_RX_MAXFRM_SIZE ENETC_MAC_MAXFRM_SIZE #define ENETC_RXB_TRUESIZE 2048 /* PAGE_SIZE >> 1 */ #define ENETC_RXB_PAD NET_SKB_PAD /* add extra space if needed */ #define ENETC_RXB_DMA_SIZE \ (SKB_WITH_OVERHEAD(ENETC_RXB_TRUESIZE) - ENETC_RXB_PAD) #define ENETC_RXB_DMA_SIZE_XDP \ (SKB_WITH_OVERHEAD(ENETC_RXB_TRUESIZE) - XDP_PACKET_HEADROOM) struct enetc_rx_swbd { dma_addr_t dma; struct page *page; u16 page_offset; enum dma_data_direction dir; u16 len; }; /* ENETC overhead: optional extension BD + 1 BD gap */ #define ENETC_TXBDS_NEEDED(val) ((val) + 2) /* max # of chained Tx BDs is 15, including head and extension BD */ #define ENETC_MAX_SKB_FRAGS 13 #define ENETC_TXBDS_MAX_NEEDED ENETC_TXBDS_NEEDED(ENETC_MAX_SKB_FRAGS + 1) struct enetc_ring_stats { unsigned int packets; unsigned int bytes; unsigned int rx_alloc_errs; unsigned int xdp_drops; unsigned int xdp_tx; unsigned int xdp_tx_drops; unsigned int xdp_redirect; unsigned int xdp_redirect_failures; unsigned int xdp_redirect_sg; unsigned int recycles; unsigned int recycle_failures; unsigned int win_drop; }; struct enetc_xdp_data { struct xdp_rxq_info rxq; struct bpf_prog *prog; int xdp_tx_in_flight; }; #define ENETC_RX_RING_DEFAULT_SIZE 2048 #define ENETC_TX_RING_DEFAULT_SIZE 2048 #define ENETC_DEFAULT_TX_WORK (ENETC_TX_RING_DEFAULT_SIZE / 2) struct enetc_bdr { struct device *dev; /* for DMA mapping */ struct net_device *ndev; void *bd_base; /* points to Rx or Tx BD ring */ union { void __iomem *tpir; void __iomem *rcir; }; u16 index; u16 prio; int bd_count; /* # of BDs */ int next_to_use; int next_to_clean; union { struct enetc_tx_swbd *tx_swbd; struct enetc_rx_swbd *rx_swbd; }; union { void __iomem *tcir; /* Tx */ int next_to_alloc; /* Rx */ }; void __iomem *idr; /* Interrupt Detect Register pointer */ int buffer_offset; struct enetc_xdp_data xdp; struct enetc_ring_stats stats; dma_addr_t bd_dma_base; u8 tsd_enable; /* Time specific departure */ bool ext_en; /* enable h/w descriptor extensions */ /* DMA buffer for TSO headers */ char *tso_headers; dma_addr_t tso_headers_dma; } ____cacheline_aligned_in_smp; static inline void enetc_bdr_idx_inc(struct enetc_bdr *bdr, int *i) { if (unlikely(++*i == bdr->bd_count)) *i = 0; } 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; } static inline int enetc_swbd_unused(struct enetc_bdr *bdr) { if (bdr->next_to_clean > bdr->next_to_alloc) return bdr->next_to_clean - bdr->next_to_alloc - 1; return bdr->bd_count + bdr->next_to_clean - bdr->next_to_alloc - 1; } /* Control BD ring */ #define ENETC_CBDR_DEFAULT_SIZE 64 struct enetc_cbdr { void *bd_base; /* points to Rx or Tx BD ring */ void __iomem *pir; void __iomem *cir; void __iomem *mr; /* mode register */ int bd_count; /* # of BDs */ int next_to_use; int next_to_clean; dma_addr_t bd_dma_base; struct device *dma_dev; }; #define ENETC_TXBD(BDR, i) (&(((union enetc_tx_bd *)((BDR).bd_base))[i])) static inline union enetc_rx_bd *enetc_rxbd(struct enetc_bdr *rx_ring, int i) { int hw_idx = i; #ifdef CONFIG_FSL_ENETC_PTP_CLOCK if (rx_ring->ext_en) hw_idx = 2 * i; #endif return &(((union enetc_rx_bd *)rx_ring->bd_base)[hw_idx]); } static inline void enetc_rxbd_next(struct enetc_bdr *rx_ring, union enetc_rx_bd **old_rxbd, int *old_index) { union enetc_rx_bd *new_rxbd = *old_rxbd; int new_index = *old_index; new_rxbd++; #ifdef CONFIG_FSL_ENETC_PTP_CLOCK if (rx_ring->ext_en) new_rxbd++; #endif if (unlikely(++new_index == rx_ring->bd_count)) { new_rxbd = rx_ring->bd_base; new_index = 0; } *old_rxbd = new_rxbd; *old_index = new_index; } static inline union enetc_rx_bd *enetc_rxbd_ext(union enetc_rx_bd *rxbd) { return ++rxbd; } struct enetc_msg_swbd { void *vaddr; dma_addr_t dma; int size; }; #define ENETC_REV1 0x1 enum enetc_errata { ENETC_ERR_VLAN_ISOL = BIT(0), ENETC_ERR_UCMCSWP = BIT(1), }; #define ENETC_SI_F_QBV BIT(0) #define ENETC_SI_F_PSFP BIT(1) /* PCI IEP device data */ struct enetc_si { struct pci_dev *pdev; struct enetc_hw hw; enum enetc_errata errata; struct net_device *ndev; /* back ref. */ struct enetc_cbdr cbd_ring; int num_rx_rings; /* how many rings are available in the SI */ int num_tx_rings; int num_fs_entries; int num_rss; /* number of RSS buckets */ unsigned short pad; int hw_features; }; #define ENETC_SI_ALIGN 32 static inline void *enetc_si_priv(const struct enetc_si *si) { return (char *)si + ALIGN(sizeof(struct enetc_si), ENETC_SI_ALIGN); } static inline bool enetc_si_is_pf(struct enetc_si *si) { return !!(si->hw.port); } static inline int enetc_pf_to_port(struct pci_dev *pf_pdev) { switch (pf_pdev->devfn) { case 0: return 0; case 1: return 1; case 2: return 2; case 6: return 3; default: return -1; } } #define ENETC_MAX_NUM_TXQS 8 #define ENETC_INT_NAME_MAX (IFNAMSIZ + 8) struct enetc_int_vector { void __iomem *rbier; void __iomem *tbier_base; void __iomem *ricr1; unsigned long tx_rings_map; int count_tx_rings; u32 rx_ictt; u16 comp_cnt; bool rx_dim_en, rx_napi_work; struct napi_struct napi ____cacheline_aligned_in_smp; struct dim rx_dim ____cacheline_aligned_in_smp; char name[ENETC_INT_NAME_MAX]; struct enetc_bdr rx_ring; struct enetc_bdr tx_ring[]; } ____cacheline_aligned_in_smp; struct enetc_cls_rule { struct ethtool_rx_flow_spec fs; int used; }; #define ENETC_MAX_BDR_INT 2 /* fixed to max # of available cpus */ struct psfp_cap { u32 max_streamid; u32 max_psfp_filter; u32 max_psfp_gate; u32 max_psfp_gatelist; u32 max_psfp_meter; }; #define ENETC_F_TX_TSTAMP_MASK 0xff /* TODO: more hardware offloads */ enum enetc_active_offloads { /* 8 bits reserved for TX timestamp types (hwtstamp_tx_types) */ ENETC_F_TX_TSTAMP = BIT(0), ENETC_F_TX_ONESTEP_SYNC_TSTAMP = BIT(1), ENETC_F_RX_TSTAMP = BIT(8), ENETC_F_QBV = BIT(9), ENETC_F_QCI = BIT(10), }; enum enetc_flags_bit { ENETC_TX_ONESTEP_TSTAMP_IN_PROGRESS = 0, }; /* interrupt coalescing modes */ enum enetc_ic_mode { /* one interrupt per frame */ ENETC_IC_NONE = 0, /* activated when int coalescing time is set to a non-0 value */ ENETC_IC_RX_MANUAL = BIT(0), ENETC_IC_TX_MANUAL = BIT(1), /* use dynamic interrupt moderation */ ENETC_IC_RX_ADAPTIVE = BIT(2), }; #define ENETC_RXIC_PKTTHR min_t(u32, 256, ENETC_RX_RING_DEFAULT_SIZE / 2) #define ENETC_TXIC_PKTTHR min_t(u32, 128, ENETC_TX_RING_DEFAULT_SIZE / 2) #define ENETC_TXIC_TIMETHR enetc_usecs_to_cycles(600) struct enetc_ndev_priv { struct net_device *ndev; struct device *dev; /* dma-mapping device */ struct enetc_si *si; int bdr_int_num; /* number of Rx/Tx ring interrupts */ struct enetc_int_vector *int_vector[ENETC_MAX_BDR_INT]; u16 num_rx_rings, num_tx_rings; u16 rx_bd_count, tx_bd_count; u16 msg_enable; enum enetc_active_offloads active_offloads; u32 speed; /* store speed for compare update pspeed */ struct enetc_bdr **xdp_tx_ring; struct enetc_bdr *tx_ring[16]; struct enetc_bdr *rx_ring[16]; struct enetc_cls_rule *cls_rules; struct psfp_cap psfp_cap; struct phylink *phylink; int ic_mode; u32 tx_ictt; struct bpf_prog *xdp_prog; unsigned long flags; struct work_struct tx_onestep_tstamp; struct sk_buff_head tx_skbs; }; /* Messaging */ /* VF-PF set primary MAC address message format */ struct enetc_msg_cmd_set_primary_mac { struct enetc_msg_cmd_header header; struct sockaddr mac; }; #define ENETC_CBD(R, i) (&(((struct enetc_cbd *)((R).bd_base))[i])) #define ENETC_CBDR_TIMEOUT 1000 /* usecs */ /* PTP driver exports */ extern int enetc_phc_index; /* SI common */ int enetc_pci_probe(struct pci_dev *pdev, const char *name, int sizeof_priv); void enetc_pci_remove(struct pci_dev *pdev); int enetc_alloc_msix(struct enetc_ndev_priv *priv); void enetc_free_msix(struct enetc_ndev_priv *priv); void enetc_get_si_caps(struct enetc_si *si); void enetc_init_si_rings_params(struct enetc_ndev_priv *priv); int enetc_alloc_si_resources(struct enetc_ndev_priv *priv); void enetc_free_si_resources(struct enetc_ndev_priv *priv); int enetc_configure_si(struct enetc_ndev_priv *priv); int enetc_open(struct net_device *ndev); int enetc_close(struct net_device *ndev); void enetc_start(struct net_device *ndev); void enetc_stop(struct net_device *ndev); netdev_tx_t enetc_xmit(struct sk_buff *skb, struct net_device *ndev); struct net_device_stats *enetc_get_stats(struct net_device *ndev); void enetc_set_features(struct net_device *ndev, netdev_features_t features); int enetc_ioctl(struct net_device *ndev, struct ifreq *rq, int cmd); int enetc_setup_tc_mqprio(struct net_device *ndev, void *type_data); int enetc_setup_bpf(struct net_device *dev, struct netdev_bpf *xdp); int enetc_xdp_xmit(struct net_device *ndev, int num_frames, struct xdp_frame **frames, u32 flags); /* ethtool */ void enetc_set_ethtool_ops(struct net_device *ndev); /* control buffer descriptor ring (CBDR) */ int enetc_setup_cbdr(struct device *dev, struct enetc_hw *hw, int bd_count, struct enetc_cbdr *cbdr); void enetc_teardown_cbdr(struct enetc_cbdr *cbdr); int enetc_set_mac_flt_entry(struct enetc_si *si, int index, char *mac_addr, int si_map); int enetc_clear_mac_flt_entry(struct enetc_si *si, int index); int enetc_set_fs_entry(struct enetc_si *si, struct enetc_cmd_rfse *rfse, int index); void enetc_set_rss_key(struct enetc_hw *hw, const u8 *bytes); int enetc_get_rss_table(struct enetc_si *si, u32 *table, int count); int enetc_set_rss_table(struct enetc_si *si, const u32 *table, int count); int enetc_send_cmd(struct enetc_si *si, struct enetc_cbd *cbd); static inline void *enetc_cbd_alloc_data_mem(struct enetc_si *si, struct enetc_cbd *cbd, int size, dma_addr_t *dma, void **data_align) { struct enetc_cbdr *ring = &si->cbd_ring; dma_addr_t dma_align; void *data; data = dma_alloc_coherent(ring->dma_dev, size + ENETC_CBD_DATA_MEM_ALIGN, dma, GFP_KERNEL); if (!data) { dev_err(ring->dma_dev, "CBD alloc data memory failed!\n"); return NULL; } dma_align = ALIGN(*dma, ENETC_CBD_DATA_MEM_ALIGN); *data_align = PTR_ALIGN(data, ENETC_CBD_DATA_MEM_ALIGN); cbd->addr[0] = cpu_to_le32(lower_32_bits(dma_align)); cbd->addr[1] = cpu_to_le32(upper_32_bits(dma_align)); cbd->length = cpu_to_le16(size); return data; } static inline void enetc_cbd_free_data_mem(struct enetc_si *si, int size, void *data, dma_addr_t *dma) { struct enetc_cbdr *ring = &si->cbd_ring; dma_free_coherent(ring->dma_dev, size + ENETC_CBD_DATA_MEM_ALIGN, data, *dma); } void enetc_reset_ptcmsdur(struct enetc_hw *hw); void enetc_set_ptcmsdur(struct enetc_hw *hw, u32 *queue_max_sdu); #ifdef CONFIG_FSL_ENETC_QOS int enetc_qos_query_caps(struct net_device *ndev, void *type_data); int enetc_setup_tc_taprio(struct net_device *ndev, void *type_data); void enetc_sched_speed_set(struct enetc_ndev_priv *priv, int speed); int enetc_setup_tc_cbs(struct net_device *ndev, void *type_data); int enetc_setup_tc_txtime(struct net_device *ndev, void *type_data); int enetc_setup_tc_block_cb(enum tc_setup_type type, void *type_data, void *cb_priv); int enetc_setup_tc_psfp(struct net_device *ndev, void *type_data); int enetc_psfp_init(struct enetc_ndev_priv *priv); int enetc_psfp_clean(struct enetc_ndev_priv *priv); int enetc_set_psfp(struct net_device *ndev, bool en); static inline void enetc_get_max_cap(struct enetc_ndev_priv *priv) { struct enetc_hw *hw = &priv->si->hw; u32 reg; reg = enetc_port_rd(hw, ENETC_PSIDCAPR); priv->psfp_cap.max_streamid = reg & ENETC_PSIDCAPR_MSK; /* Port stream filter capability */ reg = enetc_port_rd(hw, ENETC_PSFCAPR); priv->psfp_cap.max_psfp_filter = reg & ENETC_PSFCAPR_MSK; /* Port stream gate capability */ reg = enetc_port_rd(hw, ENETC_PSGCAPR); priv->psfp_cap.max_psfp_gate = (reg & ENETC_PSGCAPR_SGIT_MSK); priv->psfp_cap.max_psfp_gatelist = (reg & ENETC_PSGCAPR_GCL_MSK) >> 16; /* Port flow meter capability */ reg = enetc_port_rd(hw, ENETC_PFMCAPR); priv->psfp_cap.max_psfp_meter = reg & ENETC_PFMCAPR_MSK; } static inline int enetc_psfp_enable(struct enetc_ndev_priv *priv) { struct enetc_hw *hw = &priv->si->hw; int err; enetc_get_max_cap(priv); err = enetc_psfp_init(priv); if (err) return err; enetc_wr(hw, ENETC_PPSFPMR, enetc_rd(hw, ENETC_PPSFPMR) | ENETC_PPSFPMR_PSFPEN | ENETC_PPSFPMR_VS | ENETC_PPSFPMR_PVC | ENETC_PPSFPMR_PVZC); return 0; } static inline int enetc_psfp_disable(struct enetc_ndev_priv *priv) { struct enetc_hw *hw = &priv->si->hw; int err; err = enetc_psfp_clean(priv); if (err) return err; enetc_wr(hw, ENETC_PPSFPMR, enetc_rd(hw, ENETC_PPSFPMR) & ~ENETC_PPSFPMR_PSFPEN & ~ENETC_PPSFPMR_VS & ~ENETC_PPSFPMR_PVC & ~ENETC_PPSFPMR_PVZC); memset(&priv->psfp_cap, 0, sizeof(struct psfp_cap)); return 0; } #else #define enetc_qos_query_caps(ndev, type_data) -EOPNOTSUPP #define enetc_setup_tc_taprio(ndev, type_data) -EOPNOTSUPP #define enetc_sched_speed_set(priv, speed) (void)0 #define enetc_setup_tc_cbs(ndev, type_data) -EOPNOTSUPP #define enetc_setup_tc_txtime(ndev, type_data) -EOPNOTSUPP #define enetc_setup_tc_psfp(ndev, type_data) -EOPNOTSUPP #define enetc_setup_tc_block_cb NULL #define enetc_get_max_cap(p) \ memset(&((p)->psfp_cap), 0, sizeof(struct psfp_cap)) static inline int enetc_psfp_enable(struct enetc_ndev_priv *priv) { return 0; } static inline int enetc_psfp_disable(struct enetc_ndev_priv *priv) { return 0; } static inline int enetc_set_psfp(struct net_device *ndev, bool en) { return 0; } #endif
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