1 /* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
2 /* Copyright (C) 2015-2018 Netronome Systems, Inc. */
21 #include <linux/io-64-nonatomic-hi-lo.h>
32 		if (__nn->dp.netdev)					\
33 			netdev_printk(lvl, __nn->dp.netdev, fmt, ## args); \
35 			dev_printk(lvl, __nn->dp.dev, "ctrl: " fmt, ## args); \
48 			if (__dp->netdev)				\
49 				netdev_warn(__dp->netdev, fmt, ## args); \
51 				dev_warn(__dp->dev, fmt, ## args);	\
78 /* Queue/Ring definitions */
80 #define NFP_NET_MAX_RX_RINGS	64	/* Max. # of Rx rings per device */
86 #define NFP_NET_RX_DESCS_DEFAULT 4096	/* Default # of Rx descs per ring */
118 #define D_IDX(ring, idx)	((idx) & ((ring)->cnt - 1))
120 /* Convenience macro for writing dma address into RX/TX descriptors */
126 		__d->dma_addr_lo = cpu_to_le32(lower_32_bits(__addr));	\
127 		__d->dma_addr_hi = upper_32_bits(__addr) & 0xff;	\
135 		__d->dma_addr_hi = cpu_to_le16(upper_32_bits(__addr));	\
136 		__d->dma_addr_lo = cpu_to_le32(lower_32_bits(__addr));	\
140  * struct nfp_net_tx_ring - TX ring structure
144  * @qcp_q:      Pointer to base of the QCP TX queue
146  * @cnt:        Size of the queue in number of descriptors
149  * @qcp_rd_p:   Local copy of QCP TX queue read pointer
157  * @qcidx:      Queue Controller Peripheral (QCP) queue index for the TX queue
194 /* RX and freelist descriptor format */
199 /* Flags in the RX descriptor */
245 			__le16 flags;	/* RX flags. See @PCIE_DESC_RX_* */
253 #define NFP_NET_META_FIELD_MASK GENMASK(NFP_NET_META_FIELD_SIZE - 1, 0)
281  * struct nfp_net_rx_buf - software RX buffer descriptor
291  * struct nfp_net_xsk_rx_buf - software RX XSK buffer descriptor
301  * struct nfp_net_rx_ring - RX ring structure
303  * @cnt:        Size of the queue in number of descriptors
304  * @wr_p:       FL/RX ring write pointer (free running)
305  * @rd_p:       FL/RX ring read pointer (free running)
307  * @fl_qcidx:   Queue Controller Peripheral (QCP) queue index for the freelist
308  * @qcp_fl:     Pointer to base of the QCP freelist queue
309  * @rxbufs:     Array of transmitted FL/RX buffers
310  * @xsk_rxbufs: Array of transmitted FL/RX buffers (for AF_XDP)
311  * @rxds:       Virtual address of FL/RX ring in host memory
312  * @xdp_rxq:    RX-ring info avail for XDP
313  * @dma:        DMA address of the FL/RX ring
314  * @size:       Size, in bytes, of the FL/RX ring (needed to free)
339  * struct nfp_net_r_vector - Per ring interrupt vector configuration
343  * @queue:          ctrl vNIC, send queue
344  * @lock:           ctrl vNIC, r_vec lock protects @queue
346  * @rx_ring:        Pointer to RX ring
348  * @xsk_pool:	    XSK buffer pool active on vector queue pair (for AF_XDP)
349  * @irq_entry:      MSI-X table entry (use for talking to the device)
351  * @rx_dim:	    Dynamic interrupt moderation structure for RX
353  * @rx_sync:	    Seqlock for atomic updates of RX stats
356  * @rx_drops:	    Number of packets dropped on RX due to lack of resources
376  * @rx_replace_buf_alloc_fail:	Counter of RX buffer allocation failures
382  * This structure ties RX and TX rings to interrupt vectors and a NAPI
383  * context. This currently only supports one RX and TX ring per
393 			struct sk_buff_head queue;  member
460 	return fw_ver->extend == extend &&  in nfp_net_fw_ver_eq()
461 	       fw_ver->class == class &&  in nfp_net_fw_ver_eq()
462 	       fw_ver->major == major &&  in nfp_net_fw_ver_eq()
463 	       fw_ver->minor == minor;  in nfp_net_fw_ver_eq()
472  * struct nfp_net_dp - NFP network device datapath data structure
478  * @rx_dma_dir:		Mapping direction for RX buffers
480  * @rx_offset:		Offset in the RX buffers where packet data starts
485  * @tx_rings:		Array of pre-allocated TX ring structures
486  * @rx_rings:		Array of pre-allocated RX ring structures
490  * @txrwb:		TX pointer write back area (indexed by queue id)
493  * @rxd_cnt:		Size of the RX ring in number of min size packets
497  * @num_rx_rings:	Currently configured number of RX rings
547  * struct nfp_net - NFP network device structure
561  * @max_r_vecs:		Number of allocated interrupt vectors for RX/TX
563  * @max_rx_rings:       Maximum number of RX rings supported by the Firmware
564  * @stride_rx:		Queue controller RX queue spacing
565  * @stride_tx:		Queue controller TX queue spacing
566  * @r_vecs:             Pre-allocated array of ring vectors
567  * @irq_entries:        Pre-allocated array of MSI-X entries
587  * @rx_coalesce_adapt_on:   Is RX interrupt moderation adaptive?
589  * @rx_coalesce_usecs:      RX interrupt moderation usecs delay parameter
590  * @rx_coalesce_max_frames: RX interrupt moderation frame count parameter
593  * @qcp_cfg:            Pointer to QCP queue used for configuration notification
595  * @rx_bar:             Pointer to mapped FL/RX queues
599  * @ktls_rx_conn_cnt:	Number of offloaded kTLS RX connections
603  * @ktls_rx_resync_req:	Counter of TLS RX resync requested
604  * @ktls_rx_resync_ign:	Counter of TLS RX resync requests ignored
605  * @ktls_rx_resync_sent:    Counter of TLS RX resync completed
607  * @mbox_cmsg.queue:	CCM mbox queue of pending messages
608  * @mbox_cmsg.wq:	CCM mbox wait queue of waiting processes
609  * @mbox_cmsg.workq:	CCM mbox work queue for @wait_work and @runq_work
611  * @mbox_cmsg.runq_work:    CCM mbox posted msg queue runner work
617  * @vnic_no_name:	For non-port PF vNIC make ndo_get_phys_port_name return
618  *			-EOPNOTSUPP to keep backwards compatibility (set by app)
709 		struct sk_buff_head queue;  member
782 	return readb(nn->dp.ctrl_bar + off);  in nn_readb()
787 	writeb(val, nn->dp.ctrl_bar + off);  in nn_writeb()
792 	return readw(nn->dp.ctrl_bar + off);  in nn_readw()
797 	writew(val, nn->dp.ctrl_bar + off);  in nn_writew()
802 	return readl(nn->dp.ctrl_bar + off);  in nn_readl()
807 	writel(val, nn->dp.ctrl_bar + off);  in nn_writel()
812 	return readq(nn->dp.ctrl_bar + off);  in nn_readq()
817 	writeq(val, nn->dp.ctrl_bar + off);  in nn_writeq()
826 /* Queue Controller Peripheral access functions and definitions.
828  * Some of the BARs of the NFP are mapped to portions of the Queue
829  * Controller Peripheral (QCP) address space on the NFP.  A QCP queue
832  * operation on queue pointers, but here we only offer function to
844 /* nfp_qcp_ptr - Read or Write Pointer of a queue */
851  * nfp_qcp_rd_ptr_add() - Add the value to the read pointer of a queue
853  * @q:   Base address for queue structure
854  * @val: Value to add to the queue pointer
862  * nfp_qcp_wr_ptr_add() - Add the value to the write pointer of a queue
864  * @q:   Base address for queue structure
865  * @val: Value to add to the queue pointer
891  * nfp_qcp_rd_ptr_read() - Read the current read pointer value for a queue
892  * @q:  Base address for queue structure
902  * nfp_qcp_wr_ptr_read() - Read the current write pointer value for a queue
903  * @q:  Base address for queue structure
912 u32 nfp_qcp_queue_offset(const struct nfp_dev_info *dev_info, u16 queue);
916 	WARN_ON_ONCE(!nn->dp.netdev && nn->port);  in nfp_net_is_data_vnic()
917 	return !!nn->dp.netdev;  in nfp_net_is_data_vnic()
922 	return nn->dp.ctrl & NFP_NET_CFG_CTRL_ENABLE;  in nfp_net_running()
927 	return nn->dp.netdev ? nn->dp.netdev->name : "ctrl";  in nfp_net_name()
931 	__acquires(&nn->r_vecs[0].lock)  in nfp_ctrl_lock()
933 	spin_lock_bh(&nn->r_vecs[0].lock);  in nfp_ctrl_lock()
937 	__releases(&nn->r_vecs[0].lock)  in nfp_ctrl_unlock()
939 	spin_unlock_bh(&nn->r_vecs[0].lock);  in nfp_ctrl_unlock()
944 	down(&nn->bar_lock);  in nn_ctrl_bar_lock()
949 	return !down_trylock(&nn->bar_lock);  in nn_ctrl_bar_trylock()
954 	up(&nn->bar_lock);  in nn_ctrl_bar_unlock()
965 	return netdev->netdev_ops == &nfp_nfd3_netdev_ops ||  in nfp_netdev_is_nfp_net()
966 	       netdev->netdev_ops == &nfp_nfdk_netdev_ops;  in nfp_netdev_is_nfp_net()
971 	if (param >= ((1 << 16) - 1))  in nfp_net_coalesce_para_check()
972 		return -EINVAL;  in nfp_net_coalesce_para_check()