/* SPDX-License-Identifier: GPL-2.0-only */ /* * Copyright (C) 2015 Cavium, Inc. */ #ifndef NICVF_QUEUES_H #define NICVF_QUEUES_H #include <linux/netdevice.h> #include <linux/iommu.h> #include <net/xdp.h> #include "q_struct.h" #define MAX_QUEUE_SET … #define MAX_RCV_QUEUES_PER_QS … #define MAX_RCV_BUF_DESC_RINGS_PER_QS … #define MAX_SND_QUEUES_PER_QS … #define MAX_CMP_QUEUES_PER_QS … /* VF's queue interrupt ranges */ #define NICVF_INTR_ID_CQ … #define NICVF_INTR_ID_SQ … #define NICVF_INTR_ID_RBDR … #define NICVF_INTR_ID_MISC … #define NICVF_INTR_ID_QS_ERR … #define for_each_cq_irq(irq) … #define for_each_sq_irq(irq) … #define for_each_rbdr_irq(irq) … #define RBDR_SIZE0 … #define RBDR_SIZE1 … #define RBDR_SIZE2 … #define RBDR_SIZE3 … #define RBDR_SIZE4 … #define RBDR_SIZE5 … #define RBDR_SIZE6 … #define SND_QUEUE_SIZE0 … #define SND_QUEUE_SIZE1 … #define SND_QUEUE_SIZE2 … #define SND_QUEUE_SIZE3 … #define SND_QUEUE_SIZE4 … #define SND_QUEUE_SIZE5 … #define SND_QUEUE_SIZE6 … #define CMP_QUEUE_SIZE0 … #define CMP_QUEUE_SIZE1 … #define CMP_QUEUE_SIZE2 … #define CMP_QUEUE_SIZE3 … #define CMP_QUEUE_SIZE4 … #define CMP_QUEUE_SIZE5 … #define CMP_QUEUE_SIZE6 … /* Default queue count per QS, its lengths and threshold values */ #define DEFAULT_RBDR_CNT … #define SND_QSIZE … #define SND_QUEUE_LEN … #define MIN_SND_QUEUE_LEN … #define MAX_SND_QUEUE_LEN … #define SND_QUEUE_THRESH … #define MIN_SQ_DESC_PER_PKT_XMIT … /* Since timestamp not enabled, otherwise 2 */ #define MAX_CQE_PER_PKT_XMIT … /* Keep CQ and SQ sizes same, if timestamping * is enabled this equation will change. */ #define CMP_QSIZE … #define CMP_QUEUE_LEN … #define MIN_CMP_QUEUE_LEN … #define MAX_CMP_QUEUE_LEN … #define CMP_QUEUE_CQE_THRESH … #define CMP_QUEUE_TIMER_THRESH … /* No of CQEs that might anyway gets used by HW due to pipelining * effects irrespective of PASS/DROP/LEVELS being configured */ #define CMP_QUEUE_PIPELINE_RSVD … #define RBDR_SIZE … #define RCV_BUF_COUNT … #define MAX_RCV_BUF_COUNT … #define RBDR_THRESH … #define DMA_BUFFER_LEN … #define RCV_FRAG_LEN … #define MAX_CQES_FOR_TX … /* RED and Backpressure levels of CQ for pkt reception * For CQ, level is a measure of emptiness i.e 0x0 means full * eg: For CQ of size 4K, and for pass/drop levels of 160/144 * HW accepts pkt if unused CQE >= 2560 * RED accepts pkt if unused CQE < 2304 & >= 2560 * DROPs pkts if unused CQE < 2304 */ #define RQ_PASS_CQ_LVL … #define RQ_DROP_CQ_LVL … /* RED and Backpressure levels of RBDR for pkt reception * For RBDR, level is a measure of fullness i.e 0x0 means empty * eg: For RBDR of size 8K, and for pass/drop levels of 4/0 * HW accepts pkt if unused RBs >= 256 * RED accepts pkt if unused RBs < 256 & >= 0 * DROPs pkts if unused RBs < 0 */ #define RQ_PASS_RBDR_LVL … #define RQ_DROP_RBDR_LVL … /* Descriptor size in bytes */ #define SND_QUEUE_DESC_SIZE … #define CMP_QUEUE_DESC_SIZE … /* Buffer / descriptor alignments */ #define NICVF_RCV_BUF_ALIGN … #define NICVF_RCV_BUF_ALIGN_BYTES … #define NICVF_CQ_BASE_ALIGN_BYTES … #define NICVF_SQ_BASE_ALIGN_BYTES … #define NICVF_ALIGNED_ADDR(ADDR, ALIGN_BYTES) … /* Queue enable/disable */ #define NICVF_SQ_EN … /* Queue reset */ #define NICVF_CQ_RESET … #define NICVF_SQ_RESET … #define NICVF_RBDR_RESET … enum CQ_RX_ERRLVL_E { … }; enum CQ_RX_ERROP_E { … }; enum CQ_TX_ERROP_E { … }; enum RQ_SQ_STATS { … }; struct rx_tx_queue_stats { … } ____cacheline_aligned_in_smp; struct q_desc_mem { … }; struct pgcache { … }; struct rbdr { … } ____cacheline_aligned_in_smp; struct rcv_queue { … } ____cacheline_aligned_in_smp; struct cmp_queue { … } ____cacheline_aligned_in_smp; struct snd_queue { … } ____cacheline_aligned_in_smp; struct queue_set { … } ____cacheline_aligned_in_smp; #define GET_RBDR_DESC(RING, idx) … #define GET_SQ_DESC(RING, idx) … #define GET_CQ_DESC(RING, idx) … /* CQ status bits */ #define CQ_WR_FULL … #define CQ_WR_DISABLE … #define CQ_WR_FAULT … #define CQ_CQE_COUNT … #define CQ_ERR_MASK … static inline u64 nicvf_iova_to_phys(struct nicvf *nic, dma_addr_t dma_addr) { … } void nicvf_unmap_sndq_buffers(struct nicvf *nic, struct snd_queue *sq, int hdr_sqe, u8 subdesc_cnt); void nicvf_config_vlan_stripping(struct nicvf *nic, netdev_features_t features); 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 snd_queue *sq, struct sk_buff *skb, u8 sq_num); int nicvf_xdp_sq_append_pkt(struct nicvf *nic, struct snd_queue *sq, u64 bufaddr, u64 dma_addr, u16 len); void nicvf_xdp_sq_doorbell(struct nicvf *nic, struct snd_queue *sq, int sq_num); struct sk_buff *nicvf_get_rcv_skb(struct nicvf *nic, struct cqe_rx_t *cqe_rx, bool xdp); void nicvf_rbdr_task(struct tasklet_struct *t); 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 cqe_rx_t *cqe_rx); int nicvf_check_cqe_tx_errs(struct nicvf *nic, struct cqe_send_t *cqe_tx); #endif /* NICVF_QUEUES_H */
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