/* * Copyright (C) 2015 Cavium, Inc. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License * as published by the Free Software Foundation. */ #ifndef NIC_H #define NIC_H #include #include #include #include "thunder_bgx.h" /* PCI device IDs */ #define PCI_DEVICE_ID_THUNDER_NIC_PF 0xA01E #define PCI_DEVICE_ID_THUNDER_PASS1_NIC_VF 0x0011 #define PCI_DEVICE_ID_THUNDER_NIC_VF 0xA034 #define PCI_DEVICE_ID_THUNDER_BGX 0xA026 /* PCI BAR nos */ #define PCI_CFG_REG_BAR_NUM 0 #define PCI_MSIX_REG_BAR_NUM 4 /* NIC SRIOV VF count */ #define MAX_NUM_VFS_SUPPORTED 128 #define DEFAULT_NUM_VF_ENABLED 8 #define NIC_TNS_BYPASS_MODE 0 #define NIC_TNS_MODE 1 /* NIC priv flags */ #define NIC_SRIOV_ENABLED BIT(0) /* Min/Max packet size */ #define NIC_HW_MIN_FRS 64 #define NIC_HW_MAX_FRS 9200 /* 9216 max packet including FCS */ /* Max pkinds */ #define NIC_MAX_PKIND 16 /* Rx Channels */ /* Receive channel configuration in TNS bypass mode * Below is configuration in TNS bypass mode * BGX0-LMAC0-CHAN0 - VNIC CHAN0 * BGX0-LMAC1-CHAN0 - VNIC CHAN16 * ... * BGX1-LMAC0-CHAN0 - VNIC CHAN128 * ... * BGX1-LMAC3-CHAN0 - VNIC CHAN174 */ #define NIC_INTF_COUNT 2 /* Interfaces btw VNIC and TNS/BGX */ #define NIC_CHANS_PER_INF 128 #define NIC_MAX_CHANS (NIC_INTF_COUNT * NIC_CHANS_PER_INF) #define NIC_CPI_COUNT 2048 /* No of channel parse indices */ /* TNS bypass mode: 1-1 mapping between VNIC and BGX:LMAC */ #define NIC_MAX_BGX MAX_BGX_PER_CN88XX #define NIC_CPI_PER_BGX (NIC_CPI_COUNT / NIC_MAX_BGX) #define NIC_MAX_CPI_PER_LMAC 64 /* Max when CPI_ALG is IP diffserv */ #define NIC_RSSI_PER_BGX (NIC_RSSI_COUNT / NIC_MAX_BGX) /* Tx scheduling */ #define NIC_MAX_TL4 1024 #define NIC_MAX_TL4_SHAPERS 256 /* 1 shaper for 4 TL4s */ #define NIC_MAX_TL3 256 #define NIC_MAX_TL3_SHAPERS 64 /* 1 shaper for 4 TL3s */ #define NIC_MAX_TL2 64 #define NIC_MAX_TL2_SHAPERS 2 /* 1 shaper for 32 TL2s */ #define NIC_MAX_TL1 2 /* TNS bypass mode */ #define NIC_TL2_PER_BGX 32 #define NIC_TL4_PER_BGX (NIC_MAX_TL4 / NIC_MAX_BGX) #define NIC_TL4_PER_LMAC (NIC_MAX_TL4 / NIC_CHANS_PER_INF) /* NIC VF Interrupts */ #define NICVF_INTR_CQ 0 #define NICVF_INTR_SQ 1 #define NICVF_INTR_RBDR 2 #define NICVF_INTR_PKT_DROP 3 #define NICVF_INTR_TCP_TIMER 4 #define NICVF_INTR_MBOX 5 #define NICVF_INTR_QS_ERR 6 #define NICVF_INTR_CQ_SHIFT 0 #define NICVF_INTR_SQ_SHIFT 8 #define NICVF_INTR_RBDR_SHIFT 16 #define NICVF_INTR_PKT_DROP_SHIFT 20 #define NICVF_INTR_TCP_TIMER_SHIFT 21 #define NICVF_INTR_MBOX_SHIFT 22 #define NICVF_INTR_QS_ERR_SHIFT 23 #define NICVF_INTR_CQ_MASK (0xFF << NICVF_INTR_CQ_SHIFT) #define NICVF_INTR_SQ_MASK (0xFF << NICVF_INTR_SQ_SHIFT) #define NICVF_INTR_RBDR_MASK (0x03 << NICVF_INTR_RBDR_SHIFT) #define NICVF_INTR_PKT_DROP_MASK BIT(NICVF_INTR_PKT_DROP_SHIFT) #define NICVF_INTR_TCP_TIMER_MASK BIT(NICVF_INTR_TCP_TIMER_SHIFT) #define NICVF_INTR_MBOX_MASK BIT(NICVF_INTR_MBOX_SHIFT) #define NICVF_INTR_QS_ERR_MASK BIT(NICVF_INTR_QS_ERR_SHIFT) /* MSI-X interrupts */ #define NIC_PF_MSIX_VECTORS 10 #define NIC_VF_MSIX_VECTORS 20 #define NIC_PF_INTR_ID_ECC0_SBE 0 #define NIC_PF_INTR_ID_ECC0_DBE 1 #define NIC_PF_INTR_ID_ECC1_SBE 2 #define NIC_PF_INTR_ID_ECC1_DBE 3 #define NIC_PF_INTR_ID_ECC2_SBE 4 #define NIC_PF_INTR_ID_ECC2_DBE 5 #define NIC_PF_INTR_ID_ECC3_SBE 6 #define NIC_PF_INTR_ID_ECC3_DBE 7 #define NIC_PF_INTR_ID_MBOX0 8 #define NIC_PF_INTR_ID_MBOX1 9 /* Global timer for CQ timer thresh interrupts * Calculated for SCLK of 700Mhz * value written should be a 1/16th of what is expected * * 1 tick per 0.05usec = value of 2.2 * This 10% would be covered in CQ timer thresh value */ #define NICPF_CLK_PER_INT_TICK 2 struct nicvf_cq_poll { u8 cq_idx; /* Completion queue index */ struct napi_struct napi; }; #define NIC_RSSI_COUNT 4096 /* Total no of RSS indices */ #define NIC_MAX_RSS_HASH_BITS 8 #define NIC_MAX_RSS_IDR_TBL_SIZE (1 << NIC_MAX_RSS_HASH_BITS) #define RSS_HASH_KEY_SIZE 5 /* 320 bit key */ struct nicvf_rss_info { bool enable; #define RSS_L2_EXTENDED_HASH_ENA BIT(0) #define RSS_IP_HASH_ENA BIT(1) #define RSS_TCP_HASH_ENA BIT(2) #define RSS_TCP_SYN_DIS BIT(3) #define RSS_UDP_HASH_ENA BIT(4) #define RSS_L4_EXTENDED_HASH_ENA BIT(5) #define RSS_ROCE_ENA BIT(6) #define RSS_L3_BI_DIRECTION_ENA BIT(7) #define RSS_L4_BI_DIRECTION_ENA BIT(8) u64 cfg; u8 hash_bits; u16 rss_size; u8 ind_tbl[NIC_MAX_RSS_IDR_TBL_SIZE]; u64 key[RSS_HASH_KEY_SIZE]; } ____cacheline_aligned_in_smp; enum rx_stats_reg_offset { RX_OCTS = 0x0, RX_UCAST = 0x1, RX_BCAST = 0x2, RX_MCAST = 0x3, RX_RED = 0x4, RX_RED_OCTS = 0x5, RX_ORUN = 0x6, RX_ORUN_OCTS = 0x7, RX_FCS = 0x8, RX_L2ERR = 0x9, RX_DRP_BCAST = 0xa, RX_DRP_MCAST = 0xb, RX_DRP_L3BCAST = 0xc, RX_DRP_L3MCAST = 0xd, RX_STATS_ENUM_LAST, }; enum tx_stats_reg_offset { TX_OCTS = 0x0, TX_UCAST = 0x1, TX_BCAST = 0x2, TX_MCAST = 0x3, TX_DROP = 0x4, TX_STATS_ENUM_LAST, }; struct nicvf_hw_stats { u64 rx_bytes_ok; u64 rx_ucast_frames_ok; u64 rx_bcast_frames_ok; u64 rx_mcast_frames_ok; u64 rx_fcs_errors; u64 rx_l2_errors; u64 rx_drop_red; u64 rx_drop_red_bytes; u64 rx_drop_overrun; u64 rx_drop_overrun_bytes; u64 rx_drop_bcast; u64 rx_drop_mcast; u64 rx_drop_l3_bcast; u64 rx_drop_l3_mcast; u64 tx_bytes_ok; u64 tx_ucast_frames_ok; u64 tx_bcast_frames_ok; u64 tx_mcast_frames_ok; u64 tx_drops; }; struct nicvf_drv_stats { /* Rx */ u64 rx_frames_ok; u64 rx_frames_64; u64 rx_frames_127; u64 rx_frames_255; u64 rx_frames_511; u64 rx_frames_1023; u64 rx_frames_1518; u64 rx_frames_jumbo; u64 rx_drops; /* Tx */ u64 tx_frames_ok; u64 tx_drops; u64 tx_busy; u64 tx_tso; }; struct nicvf { struct net_device *netdev; struct pci_dev *pdev; u8 vf_id; u8 node; u8 tns_mode; u16 mtu; struct queue_set *qs; void __iomem *reg_base; bool link_up; u8 duplex; u32 speed; struct page *rb_page; u32 rb_page_offset; bool rb_alloc_fail; bool rb_work_scheduled; struct delayed_work rbdr_work; struct tasklet_struct rbdr_task; struct tasklet_struct qs_err_task; struct tasklet_struct cq_task; struct nicvf_cq_poll *napi[8]; struct nicvf_rss_info rss_info; u8 cpi_alg; /* Interrupt coalescing settings */ u32 cq_coalesce_usecs; u32 msg_enable; struct nicvf_hw_stats stats; struct nicvf_drv_stats drv_stats; struct bgx_stats bgx_stats; struct work_struct reset_task; /* MSI-X */ bool msix_enabled; u8 num_vec; struct msix_entry msix_entries[NIC_VF_MSIX_VECTORS]; char irq_name[NIC_VF_MSIX_VECTORS][20]; bool irq_allocated[NIC_VF_MSIX_VECTORS]; bool pf_ready_to_rcv_msg; bool pf_acked; bool pf_nacked; bool bgx_stats_acked; } ____cacheline_aligned_in_smp; /* PF <--> VF Mailbox communication * Eight 64bit registers are shared between PF and VF. * Separate set for each VF. * Writing '1' into last register mbx7 means end of message. */ /* PF <--> VF mailbox communication */ #define NIC_PF_VF_MAILBOX_SIZE 2 #define NIC_MBOX_MSG_TIMEOUT 2000 /* ms */ /* Mailbox message types */ #define NIC_MBOX_MSG_READY 0x01 /* Is PF ready to rcv msgs */ #define NIC_MBOX_MSG_ACK 0x02 /* ACK the message received */ #define NIC_MBOX_MSG_NACK 0x03 /* NACK the message received */ #define NIC_MBOX_MSG_QS_CFG 0x04 /* Configure Qset */ #define NIC_MBOX_MSG_RQ_CFG 0x05 /* Configure receive queue */ #define NIC_MBOX_MSG_SQ_CFG 0x06 /* Configure Send queue */ #define NIC_MBOX_MSG_RQ_DROP_CFG 0x07 /* Configure receive queue */ #define NIC_MBOX_MSG_SET_MAC 0x08 /* Add MAC ID to DMAC filter */ #define NIC_MBOX_MSG_SET_MAX_FRS 0x09 /* Set max frame size */ #define NIC_MBOX_MSG_CPI_CFG 0x0A /* Config CPI, RSSI */ #define NIC_MBOX_MSG_RSS_SIZE 0x0B /* Get RSS indir_tbl size */ #define NIC_MBOX_MSG_RSS_CFG 0x0C /* Config RSS table */ #define NIC_MBOX_MSG_RSS_CFG_CONT 0x0D /* RSS config continuation */ #define NIC_MBOX_MSG_RQ_BP_CFG 0x0E /* RQ backpressure config */ #define NIC_MBOX_MSG_RQ_SW_SYNC 0x0F /* Flush inflight pkts to RQ */ #define NIC_MBOX_MSG_BGX_STATS 0x10 /* Get stats from BGX */ #define NIC_MBOX_MSG_BGX_LINK_CHANGE 0x11 /* BGX:LMAC link status */ #define NIC_MBOX_MSG_CFG_DONE 0x12 /* VF configuration done */ #define NIC_MBOX_MSG_SHUTDOWN 0x13 /* VF is being shutdown */ struct nic_cfg_msg { u8 msg; u8 vf_id; u8 tns_mode; u8 node_id; u8 mac_addr[ETH_ALEN]; }; /* Qset configuration */ struct qs_cfg_msg { u8 msg; u8 num; u64 cfg; }; /* Receive queue configuration */ struct rq_cfg_msg { u8 msg; u8 qs_num; u8 rq_num; u64 cfg; }; /* Send queue configuration */ struct sq_cfg_msg { u8 msg; u8 qs_num; u8 sq_num; u64 cfg; }; /* Set VF's MAC address */ struct set_mac_msg { u8 msg; u8 vf_id; u8 mac_addr[ETH_ALEN]; }; /* Set Maximum frame size */ struct set_frs_msg { u8 msg; u8 vf_id; u16 max_frs; }; /* Set CPI algorithm type */ struct cpi_cfg_msg { u8 msg; u8 vf_id; u8 rq_cnt; u8 cpi_alg; }; /* Get RSS table size */ struct rss_sz_msg { u8 msg; u8 vf_id; u16 ind_tbl_size; }; /* Set RSS configuration */ struct rss_cfg_msg { u8 msg; u8 vf_id; u8 hash_bits; u8 tbl_len; u8 tbl_offset; #define RSS_IND_TBL_LEN_PER_MBX_MSG 8 u8 ind_tbl[RSS_IND_TBL_LEN_PER_MBX_MSG]; }; struct bgx_stats_msg { u8 msg; u8 vf_id; u8 rx; u8 idx; u64 stats; }; /* Physical interface link status */ struct bgx_link_status { u8 msg; u8 link_up; u8 duplex; u32 speed; }; /* 128 bit shared memory between PF and each VF */ union nic_mbx { struct { u8 msg; } msg; struct nic_cfg_msg nic_cfg; struct qs_cfg_msg qs; struct rq_cfg_msg rq; struct sq_cfg_msg sq; struct set_mac_msg mac; struct set_frs_msg frs; struct cpi_cfg_msg cpi_cfg; struct rss_sz_msg rss_size; struct rss_cfg_msg rss_cfg; struct bgx_stats_msg bgx_stats; struct bgx_link_status link_status; }; #define NIC_NODE_ID_MASK 0x03 #define NIC_NODE_ID_SHIFT 44 static inline int nic_get_node_id(struct pci_dev *pdev) { u64 addr = pci_resource_start(pdev, PCI_CFG_REG_BAR_NUM); return ((addr >> NIC_NODE_ID_SHIFT) & NIC_NODE_ID_MASK); } int nicvf_set_real_num_queues(struct net_device *netdev, int tx_queues, int rx_queues); int nicvf_open(struct net_device *netdev); int nicvf_stop(struct net_device *netdev); int nicvf_send_msg_to_pf(struct nicvf *vf, union nic_mbx *mbx); void nicvf_config_cpi(struct nicvf *nic); void nicvf_config_rss(struct nicvf *nic); void nicvf_set_rss_key(struct nicvf *nic); void nicvf_free_skb(struct nicvf *nic, struct sk_buff *skb); void nicvf_set_ethtool_ops(struct net_device *netdev); void nicvf_update_stats(struct nicvf *nic); void nicvf_update_lmac_stats(struct nicvf *nic); #endif /* NIC_H */