| /* |
| * 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 NICVF_QUEUES_H |
| #define NICVF_QUEUES_H |
| |
| #include <linux/netdevice.h> |
| #include "q_struct.h" |
| |
| #define MAX_QUEUE_SET 128 |
| #define MAX_RCV_QUEUES_PER_QS 8 |
| #define MAX_RCV_BUF_DESC_RINGS_PER_QS 2 |
| #define MAX_SND_QUEUES_PER_QS 8 |
| #define MAX_CMP_QUEUES_PER_QS 8 |
| |
| /* VF's queue interrupt ranges */ |
| #define NICVF_INTR_ID_CQ 0 |
| #define NICVF_INTR_ID_SQ 8 |
| #define NICVF_INTR_ID_RBDR 16 |
| #define NICVF_INTR_ID_MISC 18 |
| #define NICVF_INTR_ID_QS_ERR 19 |
| |
| #define for_each_cq_irq(irq) \ |
| for (irq = NICVF_INTR_ID_CQ; irq < NICVF_INTR_ID_SQ; irq++) |
| #define for_each_sq_irq(irq) \ |
| for (irq = NICVF_INTR_ID_SQ; irq < NICVF_INTR_ID_RBDR; irq++) |
| #define for_each_rbdr_irq(irq) \ |
| for (irq = NICVF_INTR_ID_RBDR; irq < NICVF_INTR_ID_MISC; irq++) |
| |
| #define RBDR_SIZE0 0ULL /* 8K entries */ |
| #define RBDR_SIZE1 1ULL /* 16K entries */ |
| #define RBDR_SIZE2 2ULL /* 32K entries */ |
| #define RBDR_SIZE3 3ULL /* 64K entries */ |
| #define RBDR_SIZE4 4ULL /* 126K entries */ |
| #define RBDR_SIZE5 5ULL /* 256K entries */ |
| #define RBDR_SIZE6 6ULL /* 512K entries */ |
| |
| #define SND_QUEUE_SIZE0 0ULL /* 1K entries */ |
| #define SND_QUEUE_SIZE1 1ULL /* 2K entries */ |
| #define SND_QUEUE_SIZE2 2ULL /* 4K entries */ |
| #define SND_QUEUE_SIZE3 3ULL /* 8K entries */ |
| #define SND_QUEUE_SIZE4 4ULL /* 16K entries */ |
| #define SND_QUEUE_SIZE5 5ULL /* 32K entries */ |
| #define SND_QUEUE_SIZE6 6ULL /* 64K entries */ |
| |
| #define CMP_QUEUE_SIZE0 0ULL /* 1K entries */ |
| #define CMP_QUEUE_SIZE1 1ULL /* 2K entries */ |
| #define CMP_QUEUE_SIZE2 2ULL /* 4K entries */ |
| #define CMP_QUEUE_SIZE3 3ULL /* 8K entries */ |
| #define CMP_QUEUE_SIZE4 4ULL /* 16K entries */ |
| #define CMP_QUEUE_SIZE5 5ULL /* 32K entries */ |
| #define CMP_QUEUE_SIZE6 6ULL /* 64K entries */ |
| |
| /* Default queue count per QS, its lengths and threshold values */ |
| #define RBDR_CNT 1 |
| #define RCV_QUEUE_CNT 8 |
| #define SND_QUEUE_CNT 8 |
| #define CMP_QUEUE_CNT 8 /* Max of RCV and SND qcount */ |
| |
| #define SND_QSIZE SND_QUEUE_SIZE2 |
| #define SND_QUEUE_LEN (1ULL << (SND_QSIZE + 10)) |
| #define MAX_SND_QUEUE_LEN (1ULL << (SND_QUEUE_SIZE6 + 10)) |
| #define SND_QUEUE_THRESH 2ULL |
| #define MIN_SQ_DESC_PER_PKT_XMIT 2 |
| /* Since timestamp not enabled, otherwise 2 */ |
| #define MAX_CQE_PER_PKT_XMIT 1 |
| |
| /* Keep CQ and SQ sizes same, if timestamping |
| * is enabled this equation will change. |
| */ |
| #define CMP_QSIZE CMP_QUEUE_SIZE2 |
| #define CMP_QUEUE_LEN (1ULL << (CMP_QSIZE + 10)) |
| #define CMP_QUEUE_CQE_THRESH 0 |
| #define CMP_QUEUE_TIMER_THRESH 220 /* 10usec */ |
| |
| #define RBDR_SIZE RBDR_SIZE0 |
| #define RCV_BUF_COUNT (1ULL << (RBDR_SIZE + 13)) |
| #define MAX_RCV_BUF_COUNT (1ULL << (RBDR_SIZE6 + 13)) |
| #define RBDR_THRESH (RCV_BUF_COUNT / 2) |
| #define DMA_BUFFER_LEN 2048 /* In multiples of 128bytes */ |
| #define RCV_FRAG_LEN (SKB_DATA_ALIGN(DMA_BUFFER_LEN + NET_SKB_PAD) + \ |
| SKB_DATA_ALIGN(sizeof(struct skb_shared_info)) + \ |
| (NICVF_RCV_BUF_ALIGN_BYTES * 2)) |
| #define RCV_DATA_OFFSET NICVF_RCV_BUF_ALIGN_BYTES |
| |
| #define MAX_CQES_FOR_TX ((SND_QUEUE_LEN / MIN_SQ_DESC_PER_PKT_XMIT) * \ |
| MAX_CQE_PER_PKT_XMIT) |
| /* Calculate number of CQEs to reserve for all SQEs. |
| * Its 1/256th level of CQ size. |
| * '+ 1' to account for pipelining |
| */ |
| #define RQ_CQ_DROP ((256 / (CMP_QUEUE_LEN / \ |
| (CMP_QUEUE_LEN - MAX_CQES_FOR_TX))) + 1) |
| |
| /* Descriptor size in bytes */ |
| #define SND_QUEUE_DESC_SIZE 16 |
| #define CMP_QUEUE_DESC_SIZE 512 |
| |
| /* Buffer / descriptor alignments */ |
| #define NICVF_RCV_BUF_ALIGN 7 |
| #define NICVF_RCV_BUF_ALIGN_BYTES (1ULL << NICVF_RCV_BUF_ALIGN) |
| #define NICVF_CQ_BASE_ALIGN_BYTES 512 /* 9 bits */ |
| #define NICVF_SQ_BASE_ALIGN_BYTES 128 /* 7 bits */ |
| |
| #define NICVF_ALIGNED_ADDR(ADDR, ALIGN_BYTES) ALIGN(ADDR, ALIGN_BYTES) |
| #define NICVF_ADDR_ALIGN_LEN(ADDR, BYTES)\ |
| (NICVF_ALIGNED_ADDR(ADDR, BYTES) - BYTES) |
| #define NICVF_RCV_BUF_ALIGN_LEN(X)\ |
| (NICVF_ALIGNED_ADDR(X, NICVF_RCV_BUF_ALIGN_BYTES) - X) |
| |
| /* Queue enable/disable */ |
| #define NICVF_SQ_EN BIT_ULL(19) |
| |
| /* Queue reset */ |
| #define NICVF_CQ_RESET BIT_ULL(41) |
| #define NICVF_SQ_RESET BIT_ULL(17) |
| #define NICVF_RBDR_RESET BIT_ULL(43) |
| |
| enum CQ_RX_ERRLVL_E { |
| CQ_ERRLVL_MAC, |
| CQ_ERRLVL_L2, |
| CQ_ERRLVL_L3, |
| CQ_ERRLVL_L4, |
| }; |
| |
| enum CQ_RX_ERROP_E { |
| CQ_RX_ERROP_RE_NONE = 0x0, |
| CQ_RX_ERROP_RE_PARTIAL = 0x1, |
| CQ_RX_ERROP_RE_JABBER = 0x2, |
| CQ_RX_ERROP_RE_FCS = 0x7, |
| CQ_RX_ERROP_RE_TERMINATE = 0x9, |
| CQ_RX_ERROP_RE_RX_CTL = 0xb, |
| CQ_RX_ERROP_PREL2_ERR = 0x1f, |
| CQ_RX_ERROP_L2_FRAGMENT = 0x20, |
| CQ_RX_ERROP_L2_OVERRUN = 0x21, |
| CQ_RX_ERROP_L2_PFCS = 0x22, |
| CQ_RX_ERROP_L2_PUNY = 0x23, |
| CQ_RX_ERROP_L2_MAL = 0x24, |
| CQ_RX_ERROP_L2_OVERSIZE = 0x25, |
| CQ_RX_ERROP_L2_UNDERSIZE = 0x26, |
| CQ_RX_ERROP_L2_LENMISM = 0x27, |
| CQ_RX_ERROP_L2_PCLP = 0x28, |
| CQ_RX_ERROP_IP_NOT = 0x41, |
| CQ_RX_ERROP_IP_CSUM_ERR = 0x42, |
| CQ_RX_ERROP_IP_MAL = 0x43, |
| CQ_RX_ERROP_IP_MALD = 0x44, |
| CQ_RX_ERROP_IP_HOP = 0x45, |
| CQ_RX_ERROP_L3_ICRC = 0x46, |
| CQ_RX_ERROP_L3_PCLP = 0x47, |
| CQ_RX_ERROP_L4_MAL = 0x61, |
| CQ_RX_ERROP_L4_CHK = 0x62, |
| CQ_RX_ERROP_UDP_LEN = 0x63, |
| CQ_RX_ERROP_L4_PORT = 0x64, |
| CQ_RX_ERROP_TCP_FLAG = 0x65, |
| CQ_RX_ERROP_TCP_OFFSET = 0x66, |
| CQ_RX_ERROP_L4_PCLP = 0x67, |
| CQ_RX_ERROP_RBDR_TRUNC = 0x70, |
| }; |
| |
| enum CQ_TX_ERROP_E { |
| CQ_TX_ERROP_GOOD = 0x0, |
| CQ_TX_ERROP_DESC_FAULT = 0x10, |
| CQ_TX_ERROP_HDR_CONS_ERR = 0x11, |
| CQ_TX_ERROP_SUBDC_ERR = 0x12, |
| CQ_TX_ERROP_IMM_SIZE_OFLOW = 0x80, |
| CQ_TX_ERROP_DATA_SEQUENCE_ERR = 0x81, |
| CQ_TX_ERROP_MEM_SEQUENCE_ERR = 0x82, |
| CQ_TX_ERROP_LOCK_VIOL = 0x83, |
| CQ_TX_ERROP_DATA_FAULT = 0x84, |
| CQ_TX_ERROP_TSTMP_CONFLICT = 0x85, |
| CQ_TX_ERROP_TSTMP_TIMEOUT = 0x86, |
| CQ_TX_ERROP_MEM_FAULT = 0x87, |
| CQ_TX_ERROP_CK_OVERLAP = 0x88, |
| CQ_TX_ERROP_CK_OFLOW = 0x89, |
| CQ_TX_ERROP_ENUM_LAST = 0x8a, |
| }; |
| |
| struct cmp_queue_stats { |
| struct rx_stats { |
| struct { |
| u64 mac_errs; |
| u64 l2_errs; |
| u64 l3_errs; |
| u64 l4_errs; |
| } errlvl; |
| struct { |
| u64 good; |
| u64 partial_pkts; |
| u64 jabber_errs; |
| u64 fcs_errs; |
| u64 terminate_errs; |
| u64 bgx_rx_errs; |
| u64 prel2_errs; |
| u64 l2_frags; |
| u64 l2_overruns; |
| u64 l2_pfcs; |
| u64 l2_puny; |
| u64 l2_hdr_malformed; |
| u64 l2_oversize; |
| u64 l2_undersize; |
| u64 l2_len_mismatch; |
| u64 l2_pclp; |
| u64 non_ip; |
| u64 ip_csum_err; |
| u64 ip_hdr_malformed; |
| u64 ip_payload_malformed; |
| u64 ip_hop_errs; |
| u64 l3_icrc_errs; |
| u64 l3_pclp; |
| u64 l4_malformed; |
| u64 l4_csum_errs; |
| u64 udp_len_err; |
| u64 bad_l4_port; |
| u64 bad_tcp_flag; |
| u64 tcp_offset_errs; |
| u64 l4_pclp; |
| u64 pkt_truncated; |
| } errop; |
| } rx; |
| struct tx_stats { |
| u64 good; |
| u64 desc_fault; |
| u64 hdr_cons_err; |
| u64 subdesc_err; |
| u64 imm_size_oflow; |
| u64 data_seq_err; |
| u64 mem_seq_err; |
| u64 lock_viol; |
| u64 data_fault; |
| u64 tstmp_conflict; |
| u64 tstmp_timeout; |
| u64 mem_fault; |
| u64 csum_overlap; |
| u64 csum_overflow; |
| } tx; |
| } ____cacheline_aligned_in_smp; |
| |
| enum RQ_SQ_STATS { |
| RQ_SQ_STATS_OCTS, |
| RQ_SQ_STATS_PKTS, |
| }; |
| |
| struct rx_tx_queue_stats { |
| u64 bytes; |
| u64 pkts; |
| } ____cacheline_aligned_in_smp; |
| |
| struct q_desc_mem { |
| dma_addr_t dma; |
| u64 size; |
| u16 q_len; |
| dma_addr_t phys_base; |
| void *base; |
| void *unalign_base; |
| }; |
| |
| struct rbdr { |
| bool enable; |
| u32 dma_size; |
| u32 frag_len; |
| u32 thresh; /* Threshold level for interrupt */ |
| void *desc; |
| u32 head; |
| u32 tail; |
| struct q_desc_mem dmem; |
| } ____cacheline_aligned_in_smp; |
| |
| struct rcv_queue { |
| bool enable; |
| struct rbdr *rbdr_start; |
| struct rbdr *rbdr_cont; |
| bool en_tcp_reassembly; |
| u8 cq_qs; /* CQ's QS to which this RQ is assigned */ |
| u8 cq_idx; /* CQ index (0 to 7) in the QS */ |
| u8 cont_rbdr_qs; /* Continue buffer ptrs - QS num */ |
| u8 cont_qs_rbdr_idx; /* RBDR idx in the cont QS */ |
| u8 start_rbdr_qs; /* First buffer ptrs - QS num */ |
| u8 start_qs_rbdr_idx; /* RBDR idx in the above QS */ |
| u8 caching; |
| struct rx_tx_queue_stats stats; |
| } ____cacheline_aligned_in_smp; |
| |
| struct cmp_queue { |
| bool enable; |
| u16 thresh; |
| spinlock_t lock; /* lock to serialize processing CQEs */ |
| void *desc; |
| struct q_desc_mem dmem; |
| struct cmp_queue_stats stats; |
| } ____cacheline_aligned_in_smp; |
| |
| struct snd_queue { |
| bool enable; |
| u8 cq_qs; /* CQ's QS to which this SQ is pointing */ |
| u8 cq_idx; /* CQ index (0 to 7) in the above QS */ |
| u16 thresh; |
| atomic_t free_cnt; |
| u32 head; |
| u32 tail; |
| u64 *skbuff; |
| void *desc; |
| |
| #define TSO_HEADER_SIZE 128 |
| /* For TSO segment's header */ |
| char *tso_hdrs; |
| dma_addr_t tso_hdrs_phys; |
| |
| cpumask_t affinity_mask; |
| struct q_desc_mem dmem; |
| struct rx_tx_queue_stats stats; |
| } ____cacheline_aligned_in_smp; |
| |
| struct queue_set { |
| bool enable; |
| bool be_en; |
| u8 vnic_id; |
| u8 rq_cnt; |
| u8 cq_cnt; |
| u64 cq_len; |
| u8 sq_cnt; |
| u64 sq_len; |
| u8 rbdr_cnt; |
| u64 rbdr_len; |
| struct rcv_queue rq[MAX_RCV_QUEUES_PER_QS]; |
| struct cmp_queue cq[MAX_CMP_QUEUES_PER_QS]; |
| struct snd_queue sq[MAX_SND_QUEUES_PER_QS]; |
| struct rbdr rbdr[MAX_RCV_BUF_DESC_RINGS_PER_QS]; |
| } ____cacheline_aligned_in_smp; |
| |
| #define GET_RBDR_DESC(RING, idx)\ |
| (&(((struct rbdr_entry_t *)((RING)->desc))[idx])) |
| #define GET_SQ_DESC(RING, idx)\ |
| (&(((struct sq_hdr_subdesc *)((RING)->desc))[idx])) |
| #define GET_CQ_DESC(RING, idx)\ |
| (&(((union cq_desc_t *)((RING)->desc))[idx])) |
| |
| /* CQ status bits */ |
| #define CQ_WR_FULL BIT(26) |
| #define CQ_WR_DISABLE BIT(25) |
| #define CQ_WR_FAULT BIT(24) |
| #define CQ_CQE_COUNT (0xFFFF << 0) |
| |
| #define CQ_ERR_MASK (CQ_WR_FULL | CQ_WR_DISABLE | CQ_WR_FAULT) |
| |
| int nicvf_set_qset_resources(struct nicvf *nic); |
| int nicvf_config_data_transfer(struct nicvf *nic, bool enable); |
| void nicvf_qset_config(struct nicvf *nic, bool enable); |
| void nicvf_cmp_queue_config(struct nicvf *nic, struct queue_set *qs, |
| int qidx, bool enable); |
| |
| void nicvf_sq_enable(struct nicvf *nic, struct snd_queue *sq, int qidx); |
| void nicvf_sq_disable(struct nicvf *nic, int qidx); |
| void nicvf_put_sq_desc(struct snd_queue *sq, int desc_cnt); |
| void nicvf_sq_free_used_descs(struct net_device *netdev, |
| struct snd_queue *sq, int qidx); |
| int nicvf_sq_append_skb(struct nicvf *nic, struct sk_buff *skb); |
| |
| struct sk_buff *nicvf_get_rcv_skb(struct nicvf *nic, struct cqe_rx_t *cqe_rx); |
| void nicvf_rbdr_task(unsigned long data); |
| void nicvf_rbdr_work(struct work_struct *work); |
| |
| void nicvf_enable_intr(struct nicvf *nic, int int_type, int q_idx); |
| void nicvf_disable_intr(struct nicvf *nic, int int_type, int q_idx); |
| void nicvf_clear_intr(struct nicvf *nic, int int_type, int q_idx); |
| int nicvf_is_intr_enabled(struct nicvf *nic, int int_type, int q_idx); |
| |
| /* Register access APIs */ |
| void nicvf_reg_write(struct nicvf *nic, u64 offset, u64 val); |
| u64 nicvf_reg_read(struct nicvf *nic, u64 offset); |
| void nicvf_qset_reg_write(struct nicvf *nic, u64 offset, u64 val); |
| u64 nicvf_qset_reg_read(struct nicvf *nic, u64 offset); |
| void nicvf_queue_reg_write(struct nicvf *nic, u64 offset, |
| u64 qidx, u64 val); |
| u64 nicvf_queue_reg_read(struct nicvf *nic, |
| u64 offset, u64 qidx); |
| |
| /* Stats */ |
| void nicvf_update_rq_stats(struct nicvf *nic, int rq_idx); |
| void nicvf_update_sq_stats(struct nicvf *nic, int sq_idx); |
| int nicvf_check_cqe_rx_errs(struct nicvf *nic, |
| struct cmp_queue *cq, struct cqe_rx_t *cqe_rx); |
| int nicvf_check_cqe_tx_errs(struct nicvf *nic, |
| struct cmp_queue *cq, struct cqe_send_t *cqe_tx); |
| #endif /* NICVF_QUEUES_H */ |
