1 /* SPDX-License-Identifier: GPL-2.0+ */
2 // Copyright (c) 2016-2017 Hisilicon Limited.
70 	((max_frm_size) - (ETH_HLEN + ETH_FCS_LEN + 2 * VLAN_HLEN))
87 #define HNS3_RXD_L3ID_S				4
112 #define HNS3_RXD_OL3ID_S			4
121 #define HNS3_RXD_PTYPE_S			4
122 #define HNS3_RXD_PTYPE_M			GENMASK(11, 4)
126 #define HNS3_RXD_VLD_B				4
144 #define HNS3_TXD_L3CS_B				4
163 #define HNS3_TXD_TUNTYPE_S			4
171 #define HNS3_TXD_FE_B				4
254 /* hardware spec ring buffer format */
323 	DESC_TYPE_BOUNCE_HEAD		= 1 << 4,
345 	/* desc type, used by the ring user to mark the type of the priv data */
388 	HNS3_OL3_TYPE_IPV4_OPT = 4,
407 	u32 l3_type : 4;
481 	u32 buf_size;       /* size for hnae_desc->addr, preset by AE */
485 	/* idx of lastest sent desc, the ring is empty when equal to
489 	u32 flag;          /* ring attribute */
493 		/* for Tx ring */
501 		/* for Rx ring */
545 	struct hns3_enet_ring *ring;  member
581 	 * the cb for nic to manage the ring buffer, the first half of the
584 	struct hns3_enet_ring *ring;  member
626 static inline u32 ring_space(struct hns3_enet_ring *ring)  in ring_space()  argument
631 	int begin = smp_load_acquire(&ring->next_to_clean);  in ring_space()
632 	int end = READ_ONCE(ring->next_to_use);  in ring_space()
634 	return ((end >= begin) ? (ring->desc_num - end + begin) :  in ring_space()
635 			(begin - end)) - 1;  in ring_space()
638 static inline u32 hns3_tqp_read_reg(struct hns3_enet_ring *ring, u32 reg)  in hns3_tqp_read_reg()  argument
640 	return readl_relaxed(ring->tqp->io_base + reg);  in hns3_tqp_read_reg()
656 	hns3_read_reg((a)->io_base, reg)
662 	return test_bit(HNS3_NIC_STATE_RESETTING, &priv->state);  in hns3_nic_resetting()
666 	hns3_write_reg((a)->io_base, reg, value)
668 #define ring_to_dev(ring) ((ring)->dev)  argument
670 #define ring_to_netdev(ring)	((ring)->tqp_vector->napi.dev)  argument
672 #define ring_to_dma_dir(ring) (HNAE3_IS_TX_RING(ring) ? \  argument
675 #define hns3_buf_size(_ring) ((_ring)->buf_size)
677 #define hns3_ring_stats_update(ring, cnt) do { \  argument
678 	typeof(ring) (tmp) = (ring); \
679 	u64_stats_update_begin(&(tmp)->syncp); \
680 	((tmp)->stats.cnt)++; \
681 	u64_stats_update_end(&(tmp)->syncp); \
684 static inline unsigned int hns3_page_order(struct hns3_enet_ring *ring)  in hns3_page_order()  argument
687 	if (ring->buf_size > (PAGE_SIZE / 2))  in hns3_page_order()
695 /* iterator for handling rings in ring group */
697 	for ((pos) = (head).ring; (pos); (pos) = (pos)->next)
700 	(((struct hns3_nic_priv *)netdev_priv(ndev))->ae_handle)
703 	(pci_get_drvdata((handle)->pdev))
706 	((handle)->ae_algo->ops)
712 #define hns3_rl_round_down(int_rl) round_down(int_rl, 4)
718 void hns3_clean_tx_ring(struct hns3_enet_ring *ring, int budget);
721 void hns3_fini_ring(struct hns3_enet_ring *ring);
725 		struct hns3_enet_ring *ring, int budget,