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/*
* 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 <linux/netdevice.h>
#include <linux/interrupt.h>
#include <linux/pci.h>
#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;
bool set_mac_pending;
} ____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_rss(struct nicvf *nic);
void nicvf_set_rss_key(struct nicvf *nic);
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 */
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