drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h - linux - Git at Google

 /* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
 /* Copyright 2014-2016 Freescale Semiconductor Inc.
  * Copyright 2016 NXP
  */

 #ifndef __DPAA2_ETH_H
 #define __DPAA2_ETH_H

 #include <linux/netdevice.h>
 #include <linux/if_vlan.h>
 #include <linux/fsl/mc.h>

 #include <soc/fsl/dpaa2-io.h>
 #include <soc/fsl/dpaa2-fd.h>
 #include "dpni.h"
 #include "dpni-cmd.h"

 #include "dpaa2-eth-trace.h"
 #include "dpaa2-eth-debugfs.h"
 #include "dpaa2-mac.h"

 #define DPAA2_WRIOP_VERSION(x, y, z) ((x) << 10 | (y) << 5 | (z) << 0)

 #define DPAA2_ETH_STORE_SIZE		16

 /* Maximum number of scatter-gather entries in an ingress frame,
  * considering the maximum receive frame size is 64K
  */
 #define DPAA2_ETH_MAX_SG_ENTRIES	((64 * 1024) / DPAA2_ETH_RX_BUF_SIZE)

 /* Maximum acceptable MTU value. It is in direct relation with the hardware
  * enforced Max Frame Length (currently 10k).
  */
 #define DPAA2_ETH_MFL			(10 * 1024)
 #define DPAA2_ETH_MAX_MTU		(DPAA2_ETH_MFL - VLAN_ETH_HLEN)
 /* Convert L3 MTU to L2 MFL */
 #define DPAA2_ETH_L2_MAX_FRM(mtu)	((mtu) + VLAN_ETH_HLEN)

 /* Set the taildrop threshold (in bytes) to allow the enqueue of several jumbo
  * frames in the Rx queues (length of the current frame is not
  * taken into account when making the taildrop decision)
  */
 #define DPAA2_ETH_TAILDROP_THRESH	(64 * 1024)

 /* Maximum number of Tx confirmation frames to be processed
  * in a single NAPI call
  */
 #define DPAA2_ETH_TXCONF_PER_NAPI	256

 /* Buffer quota per queue. Must be large enough such that for minimum sized
  * frames taildrop kicks in before the bpool gets depleted, so we compute
  * how many 64B frames fit inside the taildrop threshold and add a margin
  * to accommodate the buffer refill delay.
  */
 #define DPAA2_ETH_MAX_FRAMES_PER_QUEUE	(DPAA2_ETH_TAILDROP_THRESH / 64)
 #define DPAA2_ETH_NUM_BUFS		(DPAA2_ETH_MAX_FRAMES_PER_QUEUE + 256)
 #define DPAA2_ETH_REFILL_THRESH \
 	(DPAA2_ETH_NUM_BUFS - DPAA2_ETH_BUFS_PER_CMD)

 /* Maximum number of buffers that can be acquired/released through a single
  * QBMan command
  */
 #define DPAA2_ETH_BUFS_PER_CMD		7

 /* Hardware requires alignment for ingress/egress buffer addresses */
 #define DPAA2_ETH_TX_BUF_ALIGN		64

 #define DPAA2_ETH_RX_BUF_RAW_SIZE	PAGE_SIZE
 #define DPAA2_ETH_RX_BUF_TAILROOM \
 	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
 #define DPAA2_ETH_RX_BUF_SIZE \
 	(DPAA2_ETH_RX_BUF_RAW_SIZE - DPAA2_ETH_RX_BUF_TAILROOM)

 /* Hardware annotation area in RX/TX buffers */
 #define DPAA2_ETH_RX_HWA_SIZE		64
 #define DPAA2_ETH_TX_HWA_SIZE		128

 /* PTP nominal frequency 1GHz */
 #define DPAA2_PTP_CLK_PERIOD_NS		1

 /* Due to a limitation in WRIOP 1.0.0, the RX buffer data must be aligned
  * to 256B. For newer revisions, the requirement is only for 64B alignment
  */
 #define DPAA2_ETH_RX_BUF_ALIGN_REV1	256
 #define DPAA2_ETH_RX_BUF_ALIGN		64

 /* We are accommodating a skb backpointer and some S/G info
  * in the frame's software annotation. The hardware
  * options are either 0 or 64, so we choose the latter.
  */
 #define DPAA2_ETH_SWA_SIZE		64

 /* We store different information in the software annotation area of a Tx frame
  * based on what type of frame it is
  */
 enum dpaa2_eth_swa_type {
 	DPAA2_ETH_SWA_SINGLE,
 	DPAA2_ETH_SWA_SG,
 	DPAA2_ETH_SWA_XDP,
 };

 /* Must keep this struct smaller than DPAA2_ETH_SWA_SIZE */
 struct dpaa2_eth_swa {
 	enum dpaa2_eth_swa_type type;
 	union {
 		struct {
 			struct sk_buff *skb;
 		} single;
 		struct {
 			struct sk_buff *skb;
 			struct scatterlist *scl;
 			int num_sg;
 			int sgt_size;
 		} sg;
 		struct {
 			int dma_size;
 			struct xdp_frame *xdpf;
 		} xdp;
 	};
 };

 /* Annotation valid bits in FD FRC */
 #define DPAA2_FD_FRC_FASV		0x8000
 #define DPAA2_FD_FRC_FAEADV		0x4000
 #define DPAA2_FD_FRC_FAPRV		0x2000
 #define DPAA2_FD_FRC_FAIADV		0x1000
 #define DPAA2_FD_FRC_FASWOV		0x0800
 #define DPAA2_FD_FRC_FAICFDV		0x0400

 /* Error bits in FD CTRL */
 #define DPAA2_FD_RX_ERR_MASK		(FD_CTRL_SBE | FD_CTRL_FAERR)
 #define DPAA2_FD_TX_ERR_MASK		(FD_CTRL_UFD	| \
 					 FD_CTRL_SBE	| \
 					 FD_CTRL_FSE	| \
 					 FD_CTRL_FAERR)

 /* Annotation bits in FD CTRL */
 #define DPAA2_FD_CTRL_ASAL		0x00020000	/* ASAL = 128B */

 /* Frame annotation status */
 struct dpaa2_fas {
 	u8 reserved;
 	u8 ppid;
 	__le16 ifpid;
 	__le32 status;
 };

 /* Frame annotation status word is located in the first 8 bytes
  * of the buffer's hardware annoatation area
  */
 #define DPAA2_FAS_OFFSET		0
 #define DPAA2_FAS_SIZE			(sizeof(struct dpaa2_fas))

 /* Timestamp is located in the next 8 bytes of the buffer's
  * hardware annotation area
  */
 #define DPAA2_TS_OFFSET			0x8

 /* Frame annotation egress action descriptor */
 #define DPAA2_FAEAD_OFFSET		0x58

 struct dpaa2_faead {
 	__le32 conf_fqid;
 	__le32 ctrl;
 };

 #define DPAA2_FAEAD_A2V			0x20000000
 #define DPAA2_FAEAD_A4V			0x08000000
 #define DPAA2_FAEAD_UPDV		0x00001000
 #define DPAA2_FAEAD_EBDDV		0x00002000
 #define DPAA2_FAEAD_UPD			0x00000010

 /* Accessors for the hardware annotation fields that we use */
 static inline void *dpaa2_get_hwa(void *buf_addr, bool swa)
 {
 	return buf_addr + (swa ? DPAA2_ETH_SWA_SIZE : 0);
 }

 static inline struct dpaa2_fas *dpaa2_get_fas(void *buf_addr, bool swa)
 {
 	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_FAS_OFFSET;
 }

 static inline __le64 *dpaa2_get_ts(void *buf_addr, bool swa)
 {
 	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_TS_OFFSET;
 }

 static inline struct dpaa2_faead *dpaa2_get_faead(void *buf_addr, bool swa)
 {
 	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_FAEAD_OFFSET;
 }

 /* Error and status bits in the frame annotation status word */
 /* Debug frame, otherwise supposed to be discarded */
 #define DPAA2_FAS_DISC			0x80000000
 /* MACSEC frame */
 #define DPAA2_FAS_MS			0x40000000
 #define DPAA2_FAS_PTP			0x08000000
 /* Ethernet multicast frame */
 #define DPAA2_FAS_MC			0x04000000
 /* Ethernet broadcast frame */
 #define DPAA2_FAS_BC			0x02000000
 #define DPAA2_FAS_KSE			0x00040000
 #define DPAA2_FAS_EOFHE			0x00020000
 #define DPAA2_FAS_MNLE			0x00010000
 #define DPAA2_FAS_TIDE			0x00008000
 #define DPAA2_FAS_PIEE			0x00004000
 /* Frame length error */
 #define DPAA2_FAS_FLE			0x00002000
 /* Frame physical error */
 #define DPAA2_FAS_FPE			0x00001000
 #define DPAA2_FAS_PTE			0x00000080
 #define DPAA2_FAS_ISP			0x00000040
 #define DPAA2_FAS_PHE			0x00000020
 #define DPAA2_FAS_BLE			0x00000010
 /* L3 csum validation performed */
 #define DPAA2_FAS_L3CV			0x00000008
 /* L3 csum error */
 #define DPAA2_FAS_L3CE			0x00000004
 /* L4 csum validation performed */
 #define DPAA2_FAS_L4CV			0x00000002
 /* L4 csum error */
 #define DPAA2_FAS_L4CE			0x00000001
 /* Possible errors on the ingress path */
 #define DPAA2_FAS_RX_ERR_MASK		(DPAA2_FAS_KSE		| \
 					 DPAA2_FAS_EOFHE	| \
 					 DPAA2_FAS_MNLE		| \
 					 DPAA2_FAS_TIDE		| \
 					 DPAA2_FAS_PIEE		| \
 					 DPAA2_FAS_FLE		| \
 					 DPAA2_FAS_FPE		| \
 					 DPAA2_FAS_PTE		| \
 					 DPAA2_FAS_ISP		| \
 					 DPAA2_FAS_PHE		| \
 					 DPAA2_FAS_BLE		| \
 					 DPAA2_FAS_L3CE		| \
 					 DPAA2_FAS_L4CE)

 /* Time in milliseconds between link state updates */
 #define DPAA2_ETH_LINK_STATE_REFRESH	1000

 /* Number of times to retry a frame enqueue before giving up.
  * Value determined empirically, in order to minimize the number
  * of frames dropped on Tx
  */
 #define DPAA2_ETH_ENQUEUE_RETRIES	10

 /* Number of times to retry DPIO portal operations while waiting
  * for portal to finish executing current command and become
  * available. We want to avoid being stuck in a while loop in case
  * hardware becomes unresponsive, but not give up too easily if
  * the portal really is busy for valid reasons
  */
 #define DPAA2_ETH_SWP_BUSY_RETRIES	1000

 /* Driver statistics, other than those in struct rtnl_link_stats64.
  * These are usually collected per-CPU and aggregated by ethtool.
  */
 struct dpaa2_eth_drv_stats {
 	__u64	tx_conf_frames;
 	__u64	tx_conf_bytes;
 	__u64	tx_sg_frames;
 	__u64	tx_sg_bytes;
 	__u64	tx_reallocs;
 	__u64	rx_sg_frames;
 	__u64	rx_sg_bytes;
 	/* Enqueues retried due to portal busy */
 	__u64	tx_portal_busy;
 };

 /* Per-FQ statistics */
 struct dpaa2_eth_fq_stats {
 	/* Number of frames received on this queue */
 	__u64 frames;
 };

 /* Per-channel statistics */
 struct dpaa2_eth_ch_stats {
 	/* Volatile dequeues retried due to portal busy */
 	__u64 dequeue_portal_busy;
 	/* Pull errors */
 	__u64 pull_err;
 	/* Number of CDANs; useful to estimate avg NAPI len */
 	__u64 cdan;
 	/* XDP counters */
 	__u64 xdp_drop;
 	__u64 xdp_tx;
 	__u64 xdp_tx_err;
 	__u64 xdp_redirect;
 };

 /* Maximum number of queues associated with a DPNI */
 #define DPAA2_ETH_MAX_TCS		8
 #define DPAA2_ETH_MAX_RX_QUEUES		16
 #define DPAA2_ETH_MAX_TX_QUEUES		16
 #define DPAA2_ETH_MAX_QUEUES		(DPAA2_ETH_MAX_RX_QUEUES + \
 					DPAA2_ETH_MAX_TX_QUEUES)
 #define DPAA2_ETH_MAX_NETDEV_QUEUES	\
 	(DPAA2_ETH_MAX_TX_QUEUES * DPAA2_ETH_MAX_TCS)

 #define DPAA2_ETH_MAX_DPCONS		16

 enum dpaa2_eth_fq_type {
 	DPAA2_RX_FQ = 0,
 	DPAA2_TX_CONF_FQ,
 };

 struct dpaa2_eth_priv;

 struct dpaa2_eth_fq {
 	u32 fqid;
 	u32 tx_qdbin;
 	u32 tx_fqid[DPAA2_ETH_MAX_TCS];
 	u16 flowid;
 	u8 tc;
 	int target_cpu;
 	u32 dq_frames;
 	u32 dq_bytes;
 	struct dpaa2_eth_channel *channel;
 	enum dpaa2_eth_fq_type type;

 	void (*consume)(struct dpaa2_eth_priv *priv,
 			struct dpaa2_eth_channel *ch,
 			const struct dpaa2_fd *fd,
 			struct dpaa2_eth_fq *fq);
 	struct dpaa2_eth_fq_stats stats;
 };

 struct dpaa2_eth_ch_xdp {
 	struct bpf_prog *prog;
 	u64 drop_bufs[DPAA2_ETH_BUFS_PER_CMD];
 	int drop_cnt;
 	unsigned int res;
 };

 struct dpaa2_eth_channel {
 	struct dpaa2_io_notification_ctx nctx;
 	struct fsl_mc_device *dpcon;
 	int dpcon_id;
 	int ch_id;
 	struct napi_struct napi;
 	struct dpaa2_io *dpio;
 	struct dpaa2_io_store *store;
 	struct dpaa2_eth_priv *priv;
 	int buf_count;
 	struct dpaa2_eth_ch_stats stats;
 	struct dpaa2_eth_ch_xdp xdp;
 	struct xdp_rxq_info xdp_rxq;
 	struct list_head *rx_list;
 };

 struct dpaa2_eth_dist_fields {
 	u64 rxnfc_field;
 	enum net_prot cls_prot;
 	int cls_field;
 	int size;
 	u64 id;
 };

 struct dpaa2_eth_cls_rule {
 	struct ethtool_rx_flow_spec fs;
 	u8 in_use;
 };

 /* Driver private data */
 struct dpaa2_eth_priv {
 	struct net_device *net_dev;

 	u8 num_fqs;
 	struct dpaa2_eth_fq fq[DPAA2_ETH_MAX_QUEUES];
 	int (*enqueue)(struct dpaa2_eth_priv *priv,
 		       struct dpaa2_eth_fq *fq,
 		       struct dpaa2_fd *fd, u8 prio);

 	u8 num_channels;
 	struct dpaa2_eth_channel *channel[DPAA2_ETH_MAX_DPCONS];

 	struct dpni_attr dpni_attrs;
 	u16 dpni_ver_major;
 	u16 dpni_ver_minor;
 	u16 tx_data_offset;

 	struct fsl_mc_device *dpbp_dev;
 	u16 bpid;
 	struct iommu_domain *iommu_domain;

 	bool tx_tstamp; /* Tx timestamping enabled */
 	bool rx_tstamp; /* Rx timestamping enabled */

 	u16 tx_qdid;
 	struct fsl_mc_io *mc_io;
 	/* Cores which have an affine DPIO/DPCON.
 	 * This is the cpu set on which Rx and Tx conf frames are processed
 	 */
 	struct cpumask dpio_cpumask;

 	/* Standard statistics */
 	struct rtnl_link_stats64 __percpu *percpu_stats;
 	/* Extra stats, in addition to the ones known by the kernel */
 	struct dpaa2_eth_drv_stats __percpu *percpu_extras;

 	u16 mc_token;
 	u8 rx_td_enabled;

 	struct dpni_link_state link_state;
 	bool do_link_poll;
 	struct task_struct *poll_thread;

 	/* enabled ethtool hashing bits */
 	u64 rx_hash_fields;
 	u64 rx_cls_fields;
 	struct dpaa2_eth_cls_rule *cls_rules;
 	u8 rx_cls_enabled;
 	struct bpf_prog *xdp_prog;
 #ifdef CONFIG_DEBUG_FS
 	struct dpaa2_debugfs dbg;
 #endif

 	struct dpaa2_mac *mac;
 };

 #define DPAA2_RXH_SUPPORTED	(RXH_L2DA | RXH_VLAN | RXH_L3_PROTO \
 				| RXH_IP_SRC | RXH_IP_DST | RXH_L4_B_0_1 \
 				| RXH_L4_B_2_3)

 /* default Rx hash options, set during probing */
 #define DPAA2_RXH_DEFAULT	(RXH_L3_PROTO | RXH_IP_SRC | RXH_IP_DST | \
 				 RXH_L4_B_0_1 | RXH_L4_B_2_3)

 #define dpaa2_eth_hash_enabled(priv)	\
 	((priv)->dpni_attrs.num_queues > 1)

 /* Required by struct dpni_rx_tc_dist_cfg::key_cfg_iova */
 #define DPAA2_CLASSIFIER_DMA_SIZE 256

 extern const struct ethtool_ops dpaa2_ethtool_ops;
 extern int dpaa2_phc_index;

 static inline int dpaa2_eth_cmp_dpni_ver(struct dpaa2_eth_priv *priv,
 					 u16 ver_major, u16 ver_minor)
 {
 	if (priv->dpni_ver_major == ver_major)
 		return priv->dpni_ver_minor - ver_minor;
 	return priv->dpni_ver_major - ver_major;
 }

 /* Minimum firmware version that supports a more flexible API
  * for configuring the Rx flow hash key
  */
 #define DPNI_RX_DIST_KEY_VER_MAJOR	7
 #define DPNI_RX_DIST_KEY_VER_MINOR	5

 #define dpaa2_eth_has_legacy_dist(priv)					\
 	(dpaa2_eth_cmp_dpni_ver((priv), DPNI_RX_DIST_KEY_VER_MAJOR,	\
 				DPNI_RX_DIST_KEY_VER_MINOR) < 0)

 #define dpaa2_eth_fs_enabled(priv)	\
 	(!((priv)->dpni_attrs.options & DPNI_OPT_NO_FS))

 #define dpaa2_eth_fs_mask_enabled(priv)	\
 	((priv)->dpni_attrs.options & DPNI_OPT_HAS_KEY_MASKING)

 #define dpaa2_eth_fs_count(priv)        \
 	((priv)->dpni_attrs.fs_entries)

 #define dpaa2_eth_tc_count(priv)	\
 	((priv)->dpni_attrs.num_tcs)

 /* We have exactly one {Rx, Tx conf} queue per channel */
 #define dpaa2_eth_queue_count(priv)     \
 	((priv)->num_channels)

 enum dpaa2_eth_rx_dist {
 	DPAA2_ETH_RX_DIST_HASH,
 	DPAA2_ETH_RX_DIST_CLS
 };

 /* Unique IDs for the supported Rx classification header fields */
 #define DPAA2_ETH_DIST_ETHDST		BIT(0)
 #define DPAA2_ETH_DIST_ETHSRC		BIT(1)
 #define DPAA2_ETH_DIST_ETHTYPE		BIT(2)
 #define DPAA2_ETH_DIST_VLAN		BIT(3)
 #define DPAA2_ETH_DIST_IPSRC		BIT(4)
 #define DPAA2_ETH_DIST_IPDST		BIT(5)
 #define DPAA2_ETH_DIST_IPPROTO		BIT(6)
 #define DPAA2_ETH_DIST_L4SRC		BIT(7)
 #define DPAA2_ETH_DIST_L4DST		BIT(8)
 #define DPAA2_ETH_DIST_ALL		(~0ULL)

 #define DPNI_PAUSE_VER_MAJOR		7
 #define DPNI_PAUSE_VER_MINOR		13
 #define dpaa2_eth_has_pause_support(priv)			\
 	(dpaa2_eth_cmp_dpni_ver((priv), DPNI_PAUSE_VER_MAJOR,	\
 				DPNI_PAUSE_VER_MINOR) >= 0)

 static inline
 unsigned int dpaa2_eth_needed_headroom(struct dpaa2_eth_priv *priv,
 				       struct sk_buff *skb)
 {
 	unsigned int headroom = DPAA2_ETH_SWA_SIZE;

 	/* If we don't have an skb (e.g. XDP buffer), we only need space for
 	 * the software annotation area
 	 */
 	if (!skb)
 		return headroom;

 	/* For non-linear skbs we have no headroom requirement, as we build a
 	 * SG frame with a newly allocated SGT buffer
 	 */
 	if (skb_is_nonlinear(skb))
 		return 0;

 	/* If we have Tx timestamping, need 128B hardware annotation */
 	if (priv->tx_tstamp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
 		headroom += DPAA2_ETH_TX_HWA_SIZE;

 	return headroom;
 }

 /* Extra headroom space requested to hardware, in order to make sure there's
  * no realloc'ing in forwarding scenarios
  */
 static inline unsigned int dpaa2_eth_rx_head_room(struct dpaa2_eth_priv *priv)
 {
 	return priv->tx_data_offset - DPAA2_ETH_RX_HWA_SIZE;
 }

 int dpaa2_eth_set_hash(struct net_device *net_dev, u64 flags);
 int dpaa2_eth_set_cls(struct net_device *net_dev, u64 key);
 int dpaa2_eth_cls_key_size(u64 key);
 int dpaa2_eth_cls_fld_off(int prot, int field);
 void dpaa2_eth_cls_trim_rule(void *key_mem, u64 fields);

 #endif	/* __DPAA2_H */
	/* SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) */
	/* Copyright 2014-2016 Freescale Semiconductor Inc.
	* Copyright 2016 NXP
	*/

	#ifndef __DPAA2_ETH_H
	#define __DPAA2_ETH_H

	#include <linux/netdevice.h>
	#include <linux/if_vlan.h>
	#include <linux/fsl/mc.h>

	#include <soc/fsl/dpaa2-io.h>
	#include <soc/fsl/dpaa2-fd.h>
	#include "dpni.h"
	#include "dpni-cmd.h"

	#include "dpaa2-eth-trace.h"
	#include "dpaa2-eth-debugfs.h"
	#include "dpaa2-mac.h"

	#define DPAA2_WRIOP_VERSION(x, y, z) ((x) << 10 \| (y) << 5 \| (z) << 0)

	#define DPAA2_ETH_STORE_SIZE 16

	/* Maximum number of scatter-gather entries in an ingress frame,
	* considering the maximum receive frame size is 64K
	*/
	#define DPAA2_ETH_MAX_SG_ENTRIES ((64 * 1024) / DPAA2_ETH_RX_BUF_SIZE)

	/* Maximum acceptable MTU value. It is in direct relation with the hardware
	* enforced Max Frame Length (currently 10k).
	*/
	#define DPAA2_ETH_MFL (10 * 1024)
	#define DPAA2_ETH_MAX_MTU (DPAA2_ETH_MFL - VLAN_ETH_HLEN)
	/* Convert L3 MTU to L2 MFL */
	#define DPAA2_ETH_L2_MAX_FRM(mtu) ((mtu) + VLAN_ETH_HLEN)

	/* Set the taildrop threshold (in bytes) to allow the enqueue of several jumbo
	* frames in the Rx queues (length of the current frame is not
	* taken into account when making the taildrop decision)
	*/
	#define DPAA2_ETH_TAILDROP_THRESH (64 * 1024)

	/* Maximum number of Tx confirmation frames to be processed
	* in a single NAPI call
	*/
	#define DPAA2_ETH_TXCONF_PER_NAPI 256

	/* Buffer quota per queue. Must be large enough such that for minimum sized
	* frames taildrop kicks in before the bpool gets depleted, so we compute
	* how many 64B frames fit inside the taildrop threshold and add a margin
	* to accommodate the buffer refill delay.
	*/
	#define DPAA2_ETH_MAX_FRAMES_PER_QUEUE (DPAA2_ETH_TAILDROP_THRESH / 64)
	#define DPAA2_ETH_NUM_BUFS (DPAA2_ETH_MAX_FRAMES_PER_QUEUE + 256)
	#define DPAA2_ETH_REFILL_THRESH \
	(DPAA2_ETH_NUM_BUFS - DPAA2_ETH_BUFS_PER_CMD)

	/* Maximum number of buffers that can be acquired/released through a single
	* QBMan command
	*/
	#define DPAA2_ETH_BUFS_PER_CMD 7

	/* Hardware requires alignment for ingress/egress buffer addresses */
	#define DPAA2_ETH_TX_BUF_ALIGN 64

	#define DPAA2_ETH_RX_BUF_RAW_SIZE PAGE_SIZE
	#define DPAA2_ETH_RX_BUF_TAILROOM \
	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
	#define DPAA2_ETH_RX_BUF_SIZE \
	(DPAA2_ETH_RX_BUF_RAW_SIZE - DPAA2_ETH_RX_BUF_TAILROOM)

	/* Hardware annotation area in RX/TX buffers */
	#define DPAA2_ETH_RX_HWA_SIZE 64
	#define DPAA2_ETH_TX_HWA_SIZE 128

	/* PTP nominal frequency 1GHz */
	#define DPAA2_PTP_CLK_PERIOD_NS 1

	/* Due to a limitation in WRIOP 1.0.0, the RX buffer data must be aligned
	* to 256B. For newer revisions, the requirement is only for 64B alignment
	*/
	#define DPAA2_ETH_RX_BUF_ALIGN_REV1 256
	#define DPAA2_ETH_RX_BUF_ALIGN 64

	/* We are accommodating a skb backpointer and some S/G info
	* in the frame's software annotation. The hardware
	* options are either 0 or 64, so we choose the latter.
	*/
	#define DPAA2_ETH_SWA_SIZE 64

	/* We store different information in the software annotation area of a Tx frame
	* based on what type of frame it is
	*/
	enum dpaa2_eth_swa_type {
	DPAA2_ETH_SWA_SINGLE,
	DPAA2_ETH_SWA_SG,
	DPAA2_ETH_SWA_XDP,
	};

	/* Must keep this struct smaller than DPAA2_ETH_SWA_SIZE */
	struct dpaa2_eth_swa {
	enum dpaa2_eth_swa_type type;
	union {
	struct {
	struct sk_buff *skb;
	} single;
	struct {
	struct sk_buff *skb;
	struct scatterlist *scl;
	int num_sg;
	int sgt_size;
	} sg;
	struct {
	int dma_size;
	struct xdp_frame *xdpf;
	} xdp;
	};
	};

	/* Annotation valid bits in FD FRC */
	#define DPAA2_FD_FRC_FASV 0x8000
	#define DPAA2_FD_FRC_FAEADV 0x4000
	#define DPAA2_FD_FRC_FAPRV 0x2000
	#define DPAA2_FD_FRC_FAIADV 0x1000
	#define DPAA2_FD_FRC_FASWOV 0x0800
	#define DPAA2_FD_FRC_FAICFDV 0x0400

	/* Error bits in FD CTRL */
	#define DPAA2_FD_RX_ERR_MASK (FD_CTRL_SBE \| FD_CTRL_FAERR)
	#define DPAA2_FD_TX_ERR_MASK (FD_CTRL_UFD \| \
	FD_CTRL_SBE \| \
	FD_CTRL_FSE \| \
	FD_CTRL_FAERR)

	/* Annotation bits in FD CTRL */
	#define DPAA2_FD_CTRL_ASAL 0x00020000 /* ASAL = 128B */

	/* Frame annotation status */
	struct dpaa2_fas {
	u8 reserved;
	u8 ppid;
	__le16 ifpid;
	__le32 status;
	};

	/* Frame annotation status word is located in the first 8 bytes
	* of the buffer's hardware annoatation area
	*/
	#define DPAA2_FAS_OFFSET 0
	#define DPAA2_FAS_SIZE (sizeof(struct dpaa2_fas))

	/* Timestamp is located in the next 8 bytes of the buffer's
	* hardware annotation area
	*/
	#define DPAA2_TS_OFFSET 0x8

	/* Frame annotation egress action descriptor */
	#define DPAA2_FAEAD_OFFSET 0x58

	struct dpaa2_faead {
	__le32 conf_fqid;
	__le32 ctrl;
	};

	#define DPAA2_FAEAD_A2V 0x20000000
	#define DPAA2_FAEAD_A4V 0x08000000
	#define DPAA2_FAEAD_UPDV 0x00001000
	#define DPAA2_FAEAD_EBDDV 0x00002000
	#define DPAA2_FAEAD_UPD 0x00000010

	/* Accessors for the hardware annotation fields that we use */
	static inline void dpaa2_get_hwa(void buf_addr, bool swa)
	{
	return buf_addr + (swa ? DPAA2_ETH_SWA_SIZE : 0);
	}

	static inline struct dpaa2_fas dpaa2_get_fas(void buf_addr, bool swa)
	{
	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_FAS_OFFSET;
	}

	static inline __le64 dpaa2_get_ts(void buf_addr, bool swa)
	{
	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_TS_OFFSET;
	}

	static inline struct dpaa2_faead dpaa2_get_faead(void buf_addr, bool swa)
	{
	return dpaa2_get_hwa(buf_addr, swa) + DPAA2_FAEAD_OFFSET;
	}

	/* Error and status bits in the frame annotation status word */
	/* Debug frame, otherwise supposed to be discarded */
	#define DPAA2_FAS_DISC 0x80000000
	/* MACSEC frame */
	#define DPAA2_FAS_MS 0x40000000
	#define DPAA2_FAS_PTP 0x08000000
	/* Ethernet multicast frame */
	#define DPAA2_FAS_MC 0x04000000
	/* Ethernet broadcast frame */
	#define DPAA2_FAS_BC 0x02000000
	#define DPAA2_FAS_KSE 0x00040000
	#define DPAA2_FAS_EOFHE 0x00020000
	#define DPAA2_FAS_MNLE 0x00010000
	#define DPAA2_FAS_TIDE 0x00008000
	#define DPAA2_FAS_PIEE 0x00004000
	/* Frame length error */
	#define DPAA2_FAS_FLE 0x00002000
	/* Frame physical error */
	#define DPAA2_FAS_FPE 0x00001000
	#define DPAA2_FAS_PTE 0x00000080
	#define DPAA2_FAS_ISP 0x00000040
	#define DPAA2_FAS_PHE 0x00000020
	#define DPAA2_FAS_BLE 0x00000010
	/* L3 csum validation performed */
	#define DPAA2_FAS_L3CV 0x00000008
	/* L3 csum error */
	#define DPAA2_FAS_L3CE 0x00000004
	/* L4 csum validation performed */
	#define DPAA2_FAS_L4CV 0x00000002
	/* L4 csum error */
	#define DPAA2_FAS_L4CE 0x00000001
	/* Possible errors on the ingress path */
	#define DPAA2_FAS_RX_ERR_MASK (DPAA2_FAS_KSE \| \
	DPAA2_FAS_EOFHE \| \
	DPAA2_FAS_MNLE \| \
	DPAA2_FAS_TIDE \| \
	DPAA2_FAS_PIEE \| \
	DPAA2_FAS_FLE \| \
	DPAA2_FAS_FPE \| \
	DPAA2_FAS_PTE \| \
	DPAA2_FAS_ISP \| \
	DPAA2_FAS_PHE \| \
	DPAA2_FAS_BLE \| \
	DPAA2_FAS_L3CE \| \
	DPAA2_FAS_L4CE)

	/* Time in milliseconds between link state updates */
	#define DPAA2_ETH_LINK_STATE_REFRESH 1000

	/* Number of times to retry a frame enqueue before giving up.
	* Value determined empirically, in order to minimize the number
	* of frames dropped on Tx
	*/
	#define DPAA2_ETH_ENQUEUE_RETRIES 10

	/* Number of times to retry DPIO portal operations while waiting
	* for portal to finish executing current command and become
	* available. We want to avoid being stuck in a while loop in case
	* hardware becomes unresponsive, but not give up too easily if
	* the portal really is busy for valid reasons
	*/
	#define DPAA2_ETH_SWP_BUSY_RETRIES 1000

	/* Driver statistics, other than those in struct rtnl_link_stats64.
	* These are usually collected per-CPU and aggregated by ethtool.
	*/
	struct dpaa2_eth_drv_stats {
	__u64 tx_conf_frames;
	__u64 tx_conf_bytes;
	__u64 tx_sg_frames;
	__u64 tx_sg_bytes;
	__u64 tx_reallocs;
	__u64 rx_sg_frames;
	__u64 rx_sg_bytes;
	/* Enqueues retried due to portal busy */
	__u64 tx_portal_busy;
	};

	/* Per-FQ statistics */
	struct dpaa2_eth_fq_stats {
	/* Number of frames received on this queue */
	__u64 frames;
	};

	/* Per-channel statistics */
	struct dpaa2_eth_ch_stats {
	/* Volatile dequeues retried due to portal busy */
	__u64 dequeue_portal_busy;
	/* Pull errors */
	__u64 pull_err;
	/* Number of CDANs; useful to estimate avg NAPI len */
	__u64 cdan;
	/* XDP counters */
	__u64 xdp_drop;
	__u64 xdp_tx;
	__u64 xdp_tx_err;
	__u64 xdp_redirect;
	};

	/* Maximum number of queues associated with a DPNI */
	#define DPAA2_ETH_MAX_TCS 8
	#define DPAA2_ETH_MAX_RX_QUEUES 16
	#define DPAA2_ETH_MAX_TX_QUEUES 16
	#define DPAA2_ETH_MAX_QUEUES (DPAA2_ETH_MAX_RX_QUEUES + \
	DPAA2_ETH_MAX_TX_QUEUES)
	#define DPAA2_ETH_MAX_NETDEV_QUEUES \
	(DPAA2_ETH_MAX_TX_QUEUES * DPAA2_ETH_MAX_TCS)

	#define DPAA2_ETH_MAX_DPCONS 16

	enum dpaa2_eth_fq_type {
	DPAA2_RX_FQ = 0,
	DPAA2_TX_CONF_FQ,
	};

	struct dpaa2_eth_priv;

	struct dpaa2_eth_fq {
	u32 fqid;
	u32 tx_qdbin;
	u32 tx_fqid[DPAA2_ETH_MAX_TCS];
	u16 flowid;
	u8 tc;
	int target_cpu;
	u32 dq_frames;
	u32 dq_bytes;
	struct dpaa2_eth_channel *channel;
	enum dpaa2_eth_fq_type type;

	void (consume)(struct dpaa2_eth_priv priv,
	struct dpaa2_eth_channel *ch,
	const struct dpaa2_fd *fd,
	struct dpaa2_eth_fq *fq);
	struct dpaa2_eth_fq_stats stats;
	};

	struct dpaa2_eth_ch_xdp {
	struct bpf_prog *prog;
	u64 drop_bufs[DPAA2_ETH_BUFS_PER_CMD];
	int drop_cnt;
	unsigned int res;
	};

	struct dpaa2_eth_channel {
	struct dpaa2_io_notification_ctx nctx;
	struct fsl_mc_device *dpcon;
	int dpcon_id;
	int ch_id;
	struct napi_struct napi;
	struct dpaa2_io *dpio;
	struct dpaa2_io_store *store;
	struct dpaa2_eth_priv *priv;
	int buf_count;
	struct dpaa2_eth_ch_stats stats;
	struct dpaa2_eth_ch_xdp xdp;
	struct xdp_rxq_info xdp_rxq;
	struct list_head *rx_list;
	};

	struct dpaa2_eth_dist_fields {
	u64 rxnfc_field;
	enum net_prot cls_prot;
	int cls_field;
	int size;
	u64 id;
	};

	struct dpaa2_eth_cls_rule {
	struct ethtool_rx_flow_spec fs;
	u8 in_use;
	};

	/* Driver private data */
	struct dpaa2_eth_priv {
	struct net_device *net_dev;

	u8 num_fqs;
	struct dpaa2_eth_fq fq[DPAA2_ETH_MAX_QUEUES];
	int (enqueue)(struct dpaa2_eth_priv priv,
	struct dpaa2_eth_fq *fq,
	struct dpaa2_fd *fd, u8 prio);

	u8 num_channels;
	struct dpaa2_eth_channel *channel[DPAA2_ETH_MAX_DPCONS];

	struct dpni_attr dpni_attrs;
	u16 dpni_ver_major;
	u16 dpni_ver_minor;
	u16 tx_data_offset;

	struct fsl_mc_device *dpbp_dev;
	u16 bpid;
	struct iommu_domain *iommu_domain;

	bool tx_tstamp; /* Tx timestamping enabled */
	bool rx_tstamp; /* Rx timestamping enabled */

	u16 tx_qdid;
	struct fsl_mc_io *mc_io;
	/* Cores which have an affine DPIO/DPCON.
	* This is the cpu set on which Rx and Tx conf frames are processed
	*/
	struct cpumask dpio_cpumask;

	/* Standard statistics */
	struct rtnl_link_stats64 __percpu *percpu_stats;
	/* Extra stats, in addition to the ones known by the kernel */
	struct dpaa2_eth_drv_stats __percpu *percpu_extras;

	u16 mc_token;
	u8 rx_td_enabled;

	struct dpni_link_state link_state;
	bool do_link_poll;
	struct task_struct *poll_thread;

	/* enabled ethtool hashing bits */
	u64 rx_hash_fields;
	u64 rx_cls_fields;
	struct dpaa2_eth_cls_rule *cls_rules;
	u8 rx_cls_enabled;
	struct bpf_prog *xdp_prog;
	#ifdef CONFIG_DEBUG_FS
	struct dpaa2_debugfs dbg;
	#endif

	struct dpaa2_mac *mac;
	};

	#define DPAA2_RXH_SUPPORTED (RXH_L2DA \| RXH_VLAN \| RXH_L3_PROTO \
	\| RXH_IP_SRC \| RXH_IP_DST \| RXH_L4_B_0_1 \
	\| RXH_L4_B_2_3)

	/* default Rx hash options, set during probing */
	#define DPAA2_RXH_DEFAULT (RXH_L3_PROTO \| RXH_IP_SRC \| RXH_IP_DST \| \
	RXH_L4_B_0_1 \| RXH_L4_B_2_3)

	#define dpaa2_eth_hash_enabled(priv) \
	((priv)->dpni_attrs.num_queues > 1)

	/* Required by struct dpni_rx_tc_dist_cfg::key_cfg_iova */
	#define DPAA2_CLASSIFIER_DMA_SIZE 256

	extern const struct ethtool_ops dpaa2_ethtool_ops;
	extern int dpaa2_phc_index;

	static inline int dpaa2_eth_cmp_dpni_ver(struct dpaa2_eth_priv *priv,
	u16 ver_major, u16 ver_minor)
	{
	if (priv->dpni_ver_major == ver_major)
	return priv->dpni_ver_minor - ver_minor;
	return priv->dpni_ver_major - ver_major;
	}

	/* Minimum firmware version that supports a more flexible API
	* for configuring the Rx flow hash key
	*/
	#define DPNI_RX_DIST_KEY_VER_MAJOR 7
	#define DPNI_RX_DIST_KEY_VER_MINOR 5

	#define dpaa2_eth_has_legacy_dist(priv) \
	(dpaa2_eth_cmp_dpni_ver((priv), DPNI_RX_DIST_KEY_VER_MAJOR, \
	DPNI_RX_DIST_KEY_VER_MINOR) < 0)

	#define dpaa2_eth_fs_enabled(priv) \
	(!((priv)->dpni_attrs.options & DPNI_OPT_NO_FS))

	#define dpaa2_eth_fs_mask_enabled(priv) \
	((priv)->dpni_attrs.options & DPNI_OPT_HAS_KEY_MASKING)

	#define dpaa2_eth_fs_count(priv) \
	((priv)->dpni_attrs.fs_entries)

	#define dpaa2_eth_tc_count(priv) \
	((priv)->dpni_attrs.num_tcs)

	/* We have exactly one {Rx, Tx conf} queue per channel */
	#define dpaa2_eth_queue_count(priv) \
	((priv)->num_channels)

	enum dpaa2_eth_rx_dist {
	DPAA2_ETH_RX_DIST_HASH,
	DPAA2_ETH_RX_DIST_CLS
	};

	/* Unique IDs for the supported Rx classification header fields */
	#define DPAA2_ETH_DIST_ETHDST BIT(0)
	#define DPAA2_ETH_DIST_ETHSRC BIT(1)
	#define DPAA2_ETH_DIST_ETHTYPE BIT(2)
	#define DPAA2_ETH_DIST_VLAN BIT(3)
	#define DPAA2_ETH_DIST_IPSRC BIT(4)
	#define DPAA2_ETH_DIST_IPDST BIT(5)
	#define DPAA2_ETH_DIST_IPPROTO BIT(6)
	#define DPAA2_ETH_DIST_L4SRC BIT(7)
	#define DPAA2_ETH_DIST_L4DST BIT(8)
	#define DPAA2_ETH_DIST_ALL (~0ULL)

	#define DPNI_PAUSE_VER_MAJOR 7
	#define DPNI_PAUSE_VER_MINOR 13
	#define dpaa2_eth_has_pause_support(priv) \
	(dpaa2_eth_cmp_dpni_ver((priv), DPNI_PAUSE_VER_MAJOR, \
	DPNI_PAUSE_VER_MINOR) >= 0)

	static inline
	unsigned int dpaa2_eth_needed_headroom(struct dpaa2_eth_priv *priv,
	struct sk_buff *skb)
	{
	unsigned int headroom = DPAA2_ETH_SWA_SIZE;

	/* If we don't have an skb (e.g. XDP buffer), we only need space for
	* the software annotation area
	*/
	if (!skb)
	return headroom;

	/* For non-linear skbs we have no headroom requirement, as we build a
	* SG frame with a newly allocated SGT buffer
	*/
	if (skb_is_nonlinear(skb))
	return 0;

	/* If we have Tx timestamping, need 128B hardware annotation */
	if (priv->tx_tstamp && skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)
	headroom += DPAA2_ETH_TX_HWA_SIZE;

	return headroom;
	}

	/* Extra headroom space requested to hardware, in order to make sure there's
	* no realloc'ing in forwarding scenarios
	*/
	static inline unsigned int dpaa2_eth_rx_head_room(struct dpaa2_eth_priv *priv)
	{
	return priv->tx_data_offset - DPAA2_ETH_RX_HWA_SIZE;
	}

	int dpaa2_eth_set_hash(struct net_device *net_dev, u64 flags);
	int dpaa2_eth_set_cls(struct net_device *net_dev, u64 key);
	int dpaa2_eth_cls_key_size(u64 key);
	int dpaa2_eth_cls_fld_off(int prot, int field);
	void dpaa2_eth_cls_trim_rule(void *key_mem, u64 fields);

	#endif /* __DPAA2_H */