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

 /* SPDX-License-Identifier: GPL-2.0 */
 /*
  * DPAA2 Ethernet Switch declarations
  *
  * Copyright 2014-2016 Freescale Semiconductor Inc.
  * Copyright 2017-2021 NXP
  *
  */

 #ifndef __ETHSW_H
 #define __ETHSW_H

 #include <linux/netdevice.h>
 #include <linux/etherdevice.h>
 #include <linux/rtnetlink.h>
 #include <linux/if_vlan.h>
 #include <uapi/linux/if_bridge.h>
 #include <net/switchdev.h>
 #include <linux/if_bridge.h>
 #include <linux/fsl/mc.h>
 #include <net/pkt_cls.h>
 #include <soc/fsl/dpaa2-io.h>

 #include "dpaa2-mac.h"
 #include "dpsw.h"

 /* Number of IRQs supported */
 #define DPSW_IRQ_NUM	2

 /* Port is member of VLAN */
 #define ETHSW_VLAN_MEMBER	1
 /* VLAN to be treated as untagged on egress */
 #define ETHSW_VLAN_UNTAGGED	2
 /* Untagged frames will be assigned to this VLAN */
 #define ETHSW_VLAN_PVID		4
 /* VLAN configured on the switch */
 #define ETHSW_VLAN_GLOBAL	8

 /* Maximum Frame Length supported by HW (currently 10k) */
 #define DPAA2_MFL		(10 * 1024)
 #define ETHSW_MAX_FRAME_LENGTH	(DPAA2_MFL - VLAN_ETH_HLEN - ETH_FCS_LEN)
 #define ETHSW_L2_MAX_FRM(mtu)	((mtu) + VLAN_ETH_HLEN + ETH_FCS_LEN)

 #define ETHSW_FEATURE_MAC_ADDR	BIT(0)

 /* Number of receive queues (one RX and one TX_CONF) */
 #define DPAA2_SWITCH_RX_NUM_FQS	2

 /* Hardware requires alignment for ingress/egress buffer addresses */
 #define DPAA2_SWITCH_RX_BUF_RAW_SIZE	PAGE_SIZE
 #define DPAA2_SWITCH_RX_BUF_TAILROOM \
 	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
 #define DPAA2_SWITCH_RX_BUF_SIZE \
 	(DPAA2_SWITCH_RX_BUF_RAW_SIZE - DPAA2_SWITCH_RX_BUF_TAILROOM)

 #define DPAA2_SWITCH_STORE_SIZE 16

 /* Buffer management */
 #define BUFS_PER_CMD			7
 #define DPAA2_ETHSW_NUM_BUFS		(1024 * BUFS_PER_CMD)
 #define DPAA2_ETHSW_REFILL_THRESH	(DPAA2_ETHSW_NUM_BUFS * 5 / 6)

 /* 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_SWITCH_SWP_BUSY_RETRIES		1000

 /* Hardware annotation buffer size */
 #define DPAA2_SWITCH_HWA_SIZE			64
 /* Software annotation buffer size */
 #define DPAA2_SWITCH_SWA_SIZE			64

 #define DPAA2_SWITCH_TX_BUF_ALIGN		64

 #define DPAA2_SWITCH_TX_DATA_OFFSET \
 	(DPAA2_SWITCH_HWA_SIZE + DPAA2_SWITCH_SWA_SIZE)

 #define DPAA2_SWITCH_NEEDED_HEADROOM \
 	(DPAA2_SWITCH_TX_DATA_OFFSET + DPAA2_SWITCH_TX_BUF_ALIGN)

 #define DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES	16
 #define DPAA2_ETHSW_PORT_DEFAULT_TRAPS		1

 #define DPAA2_ETHSW_PORT_ACL_CMD_BUF_SIZE	256

 extern const struct ethtool_ops dpaa2_switch_port_ethtool_ops;

 struct ethsw_core;

 struct dpaa2_switch_fq {
 	struct ethsw_core *ethsw;
 	enum dpsw_queue_type type;
 	struct dpaa2_io_store *store;
 	struct dpaa2_io_notification_ctx nctx;
 	struct napi_struct napi;
 	u32 fqid;
 };

 struct dpaa2_switch_fdb {
 	struct net_device	*bridge_dev;
 	u16			fdb_id;
 	bool			in_use;
 };

 struct dpaa2_switch_acl_entry {
 	struct list_head	list;
 	u16			prio;
 	unsigned long		cookie;

 	struct dpsw_acl_entry_cfg cfg;
 	struct dpsw_acl_key	key;
 };

 struct dpaa2_switch_mirror_entry {
 	struct list_head	list;
 	struct dpsw_reflection_cfg cfg;
 	unsigned long		cookie;
 	u16 if_id;
 };

 struct dpaa2_switch_filter_block {
 	struct ethsw_core	*ethsw;
 	u64			ports;
 	bool			in_use;

 	struct list_head	acl_entries;
 	u16			acl_id;
 	u8			num_acl_rules;

 	struct list_head	mirror_entries;
 };

 static inline bool
 dpaa2_switch_acl_tbl_is_full(struct dpaa2_switch_filter_block *filter_block)
 {
 	if ((filter_block->num_acl_rules + DPAA2_ETHSW_PORT_DEFAULT_TRAPS) >=
 	    DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES)
 		return true;
 	return false;
 }

 /* Per port private data */
 struct ethsw_port_priv {
 	struct net_device	*netdev;
 	u16			idx;
 	struct ethsw_core	*ethsw_data;
 	u8			link_state;
 	u8			stp_state;

 	u8			vlans[VLAN_VID_MASK + 1];
 	u16			pvid;
 	u16			tx_qdid;

 	struct dpaa2_switch_fdb	*fdb;
 	bool			bcast_flood;
 	bool			ucast_flood;
 	bool			learn_ena;

 	struct dpaa2_switch_filter_block *filter_block;
 	struct dpaa2_mac	*mac;
 };

 /* Switch data */
 struct ethsw_core {
 	struct device			*dev;
 	struct fsl_mc_io		*mc_io;
 	u16				dpsw_handle;
 	struct dpsw_attr		sw_attr;
 	u16				major, minor;
 	unsigned long			features;
 	int				dev_id;
 	struct ethsw_port_priv		**ports;
 	struct iommu_domain		*iommu_domain;

 	u8				vlans[VLAN_VID_MASK + 1];

 	struct workqueue_struct		*workqueue;

 	struct dpaa2_switch_fq		fq[DPAA2_SWITCH_RX_NUM_FQS];
 	struct fsl_mc_device		*dpbp_dev;
 	int				buf_count;
 	u16				bpid;
 	int				napi_users;

 	struct dpaa2_switch_fdb		*fdbs;
 	struct dpaa2_switch_filter_block *filter_blocks;
 	u16				mirror_port;
 };

 static inline int dpaa2_switch_get_index(struct ethsw_core *ethsw,
 					 struct net_device *netdev)
 {
 	int i;

 	for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
 		if (ethsw->ports[i]->netdev == netdev)
 			return ethsw->ports[i]->idx;

 	return -EINVAL;
 }

 static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
 {
 	if (ethsw->sw_attr.options & DPSW_OPT_CTRL_IF_DIS) {
 		dev_err(ethsw->dev, "Control Interface is disabled, cannot probe\n");
 		return false;
 	}

 	if (ethsw->sw_attr.flooding_cfg != DPSW_FLOODING_PER_FDB) {
 		dev_err(ethsw->dev, "Flooding domain is not per FDB, cannot probe\n");
 		return false;
 	}

 	if (ethsw->sw_attr.broadcast_cfg != DPSW_BROADCAST_PER_FDB) {
 		dev_err(ethsw->dev, "Broadcast domain is not per FDB, cannot probe\n");
 		return false;
 	}

 	if (ethsw->sw_attr.max_fdbs < ethsw->sw_attr.num_ifs) {
 		dev_err(ethsw->dev, "The number of FDBs is lower than the number of ports, cannot probe\n");
 		return false;
 	}

 	return true;
 }

 static inline bool
 dpaa2_switch_port_is_type_phy(struct ethsw_port_priv *port_priv)
 {
 	if (port_priv->mac &&
 	    (port_priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY ||
 	     port_priv->mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE))
 		return true;

 	return false;
 }

 static inline bool dpaa2_switch_port_has_mac(struct ethsw_port_priv *port_priv)
 {
 	return port_priv->mac ? true : false;
 }

 bool dpaa2_switch_port_dev_check(const struct net_device *netdev);

 int dpaa2_switch_port_vlans_add(struct net_device *netdev,
 				const struct switchdev_obj_port_vlan *vlan);

 int dpaa2_switch_port_vlans_del(struct net_device *netdev,
 				const struct switchdev_obj_port_vlan *vlan);

 typedef int dpaa2_switch_fdb_cb_t(struct ethsw_port_priv *port_priv,
 				  struct fdb_dump_entry *fdb_entry,
 				  void *data);

 /* TC offload */

 int dpaa2_switch_cls_flower_replace(struct dpaa2_switch_filter_block *block,
 				    struct flow_cls_offload *cls);

 int dpaa2_switch_cls_flower_destroy(struct dpaa2_switch_filter_block *block,
 				    struct flow_cls_offload *cls);

 int dpaa2_switch_cls_matchall_replace(struct dpaa2_switch_filter_block *block,
 				      struct tc_cls_matchall_offload *cls);

 int dpaa2_switch_cls_matchall_destroy(struct dpaa2_switch_filter_block *block,
 				      struct tc_cls_matchall_offload *cls);

 int dpaa2_switch_acl_entry_add(struct dpaa2_switch_filter_block *block,
 			       struct dpaa2_switch_acl_entry *entry);

 int dpaa2_switch_block_offload_mirror(struct dpaa2_switch_filter_block *block,
 				      struct ethsw_port_priv *port_priv);

 int dpaa2_switch_block_unoffload_mirror(struct dpaa2_switch_filter_block *block,
 					struct ethsw_port_priv *port_priv);
 #endif	/* __ETHSW_H */
	/* SPDX-License-Identifier: GPL-2.0 */
	/*
	* DPAA2 Ethernet Switch declarations
	*
	* Copyright 2014-2016 Freescale Semiconductor Inc.
	* Copyright 2017-2021 NXP
	*
	*/

	#ifndef __ETHSW_H
	#define __ETHSW_H

	#include <linux/netdevice.h>
	#include <linux/etherdevice.h>
	#include <linux/rtnetlink.h>
	#include <linux/if_vlan.h>
	#include <uapi/linux/if_bridge.h>
	#include <net/switchdev.h>
	#include <linux/if_bridge.h>
	#include <linux/fsl/mc.h>
	#include <net/pkt_cls.h>
	#include <soc/fsl/dpaa2-io.h>

	#include "dpaa2-mac.h"
	#include "dpsw.h"

	/* Number of IRQs supported */
	#define DPSW_IRQ_NUM 2

	/* Port is member of VLAN */
	#define ETHSW_VLAN_MEMBER 1
	/* VLAN to be treated as untagged on egress */
	#define ETHSW_VLAN_UNTAGGED 2
	/* Untagged frames will be assigned to this VLAN */
	#define ETHSW_VLAN_PVID 4
	/* VLAN configured on the switch */
	#define ETHSW_VLAN_GLOBAL 8

	/* Maximum Frame Length supported by HW (currently 10k) */
	#define DPAA2_MFL (10 * 1024)
	#define ETHSW_MAX_FRAME_LENGTH (DPAA2_MFL - VLAN_ETH_HLEN - ETH_FCS_LEN)
	#define ETHSW_L2_MAX_FRM(mtu) ((mtu) + VLAN_ETH_HLEN + ETH_FCS_LEN)

	#define ETHSW_FEATURE_MAC_ADDR BIT(0)

	/* Number of receive queues (one RX and one TX_CONF) */
	#define DPAA2_SWITCH_RX_NUM_FQS 2

	/* Hardware requires alignment for ingress/egress buffer addresses */
	#define DPAA2_SWITCH_RX_BUF_RAW_SIZE PAGE_SIZE
	#define DPAA2_SWITCH_RX_BUF_TAILROOM \
	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))
	#define DPAA2_SWITCH_RX_BUF_SIZE \
	(DPAA2_SWITCH_RX_BUF_RAW_SIZE - DPAA2_SWITCH_RX_BUF_TAILROOM)

	#define DPAA2_SWITCH_STORE_SIZE 16

	/* Buffer management */
	#define BUFS_PER_CMD 7
	#define DPAA2_ETHSW_NUM_BUFS (1024 * BUFS_PER_CMD)
	#define DPAA2_ETHSW_REFILL_THRESH (DPAA2_ETHSW_NUM_BUFS * 5 / 6)

	/* 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_SWITCH_SWP_BUSY_RETRIES 1000

	/* Hardware annotation buffer size */
	#define DPAA2_SWITCH_HWA_SIZE 64
	/* Software annotation buffer size */
	#define DPAA2_SWITCH_SWA_SIZE 64

	#define DPAA2_SWITCH_TX_BUF_ALIGN 64

	#define DPAA2_SWITCH_TX_DATA_OFFSET \
	(DPAA2_SWITCH_HWA_SIZE + DPAA2_SWITCH_SWA_SIZE)

	#define DPAA2_SWITCH_NEEDED_HEADROOM \
	(DPAA2_SWITCH_TX_DATA_OFFSET + DPAA2_SWITCH_TX_BUF_ALIGN)

	#define DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES 16
	#define DPAA2_ETHSW_PORT_DEFAULT_TRAPS 1

	#define DPAA2_ETHSW_PORT_ACL_CMD_BUF_SIZE 256

	extern const struct ethtool_ops dpaa2_switch_port_ethtool_ops;

	struct ethsw_core;

	struct dpaa2_switch_fq {
	struct ethsw_core *ethsw;
	enum dpsw_queue_type type;
	struct dpaa2_io_store *store;
	struct dpaa2_io_notification_ctx nctx;
	struct napi_struct napi;
	u32 fqid;
	};

	struct dpaa2_switch_fdb {
	struct net_device *bridge_dev;
	u16 fdb_id;
	bool in_use;
	};

	struct dpaa2_switch_acl_entry {
	struct list_head list;
	u16 prio;
	unsigned long cookie;

	struct dpsw_acl_entry_cfg cfg;
	struct dpsw_acl_key key;
	};

	struct dpaa2_switch_mirror_entry {
	struct list_head list;
	struct dpsw_reflection_cfg cfg;
	unsigned long cookie;
	u16 if_id;
	};

	struct dpaa2_switch_filter_block {
	struct ethsw_core *ethsw;
	u64 ports;
	bool in_use;

	struct list_head acl_entries;
	u16 acl_id;
	u8 num_acl_rules;

	struct list_head mirror_entries;
	};

	static inline bool
	dpaa2_switch_acl_tbl_is_full(struct dpaa2_switch_filter_block *filter_block)
	{
	if ((filter_block->num_acl_rules + DPAA2_ETHSW_PORT_DEFAULT_TRAPS) >=
	DPAA2_ETHSW_PORT_MAX_ACL_ENTRIES)
	return true;
	return false;
	}

	/* Per port private data */
	struct ethsw_port_priv {
	struct net_device *netdev;
	u16 idx;
	struct ethsw_core *ethsw_data;
	u8 link_state;
	u8 stp_state;

	u8 vlans[VLAN_VID_MASK + 1];
	u16 pvid;
	u16 tx_qdid;

	struct dpaa2_switch_fdb *fdb;
	bool bcast_flood;
	bool ucast_flood;
	bool learn_ena;

	struct dpaa2_switch_filter_block *filter_block;
	struct dpaa2_mac *mac;
	};

	/* Switch data */
	struct ethsw_core {
	struct device *dev;
	struct fsl_mc_io *mc_io;
	u16 dpsw_handle;
	struct dpsw_attr sw_attr;
	u16 major, minor;
	unsigned long features;
	int dev_id;
	struct ethsw_port_priv **ports;
	struct iommu_domain *iommu_domain;

	u8 vlans[VLAN_VID_MASK + 1];

	struct workqueue_struct *workqueue;

	struct dpaa2_switch_fq fq[DPAA2_SWITCH_RX_NUM_FQS];
	struct fsl_mc_device *dpbp_dev;
	int buf_count;
	u16 bpid;
	int napi_users;

	struct dpaa2_switch_fdb *fdbs;
	struct dpaa2_switch_filter_block *filter_blocks;
	u16 mirror_port;
	};

	static inline int dpaa2_switch_get_index(struct ethsw_core *ethsw,
	struct net_device *netdev)
	{
	int i;

	for (i = 0; i < ethsw->sw_attr.num_ifs; i++)
	if (ethsw->ports[i]->netdev == netdev)
	return ethsw->ports[i]->idx;

	return -EINVAL;
	}

	static inline bool dpaa2_switch_supports_cpu_traffic(struct ethsw_core *ethsw)
	{
	if (ethsw->sw_attr.options & DPSW_OPT_CTRL_IF_DIS) {
	dev_err(ethsw->dev, "Control Interface is disabled, cannot probe\n");
	return false;
	}

	if (ethsw->sw_attr.flooding_cfg != DPSW_FLOODING_PER_FDB) {
	dev_err(ethsw->dev, "Flooding domain is not per FDB, cannot probe\n");
	return false;
	}

	if (ethsw->sw_attr.broadcast_cfg != DPSW_BROADCAST_PER_FDB) {
	dev_err(ethsw->dev, "Broadcast domain is not per FDB, cannot probe\n");
	return false;
	}

	if (ethsw->sw_attr.max_fdbs < ethsw->sw_attr.num_ifs) {
	dev_err(ethsw->dev, "The number of FDBs is lower than the number of ports, cannot probe\n");
	return false;
	}

	return true;
	}

	static inline bool
	dpaa2_switch_port_is_type_phy(struct ethsw_port_priv *port_priv)
	{
	if (port_priv->mac &&
	(port_priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY \|\|
	port_priv->mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE))
	return true;

	return false;
	}

	static inline bool dpaa2_switch_port_has_mac(struct ethsw_port_priv *port_priv)
	{
	return port_priv->mac ? true : false;
	}

	bool dpaa2_switch_port_dev_check(const struct net_device *netdev);

	int dpaa2_switch_port_vlans_add(struct net_device *netdev,
	const struct switchdev_obj_port_vlan *vlan);

	int dpaa2_switch_port_vlans_del(struct net_device *netdev,
	const struct switchdev_obj_port_vlan *vlan);

	typedef int dpaa2_switch_fdb_cb_t(struct ethsw_port_priv *port_priv,
	struct fdb_dump_entry *fdb_entry,
	void *data);

	/* TC offload */

	int dpaa2_switch_cls_flower_replace(struct dpaa2_switch_filter_block *block,
	struct flow_cls_offload *cls);

	int dpaa2_switch_cls_flower_destroy(struct dpaa2_switch_filter_block *block,
	struct flow_cls_offload *cls);

	int dpaa2_switch_cls_matchall_replace(struct dpaa2_switch_filter_block *block,
	struct tc_cls_matchall_offload *cls);

	int dpaa2_switch_cls_matchall_destroy(struct dpaa2_switch_filter_block *block,
	struct tc_cls_matchall_offload *cls);

	int dpaa2_switch_acl_entry_add(struct dpaa2_switch_filter_block *block,
	struct dpaa2_switch_acl_entry *entry);

	int dpaa2_switch_block_offload_mirror(struct dpaa2_switch_filter_block *block,
	struct ethsw_port_priv *port_priv);

	int dpaa2_switch_block_unoffload_mirror(struct dpaa2_switch_filter_block *block,
	struct ethsw_port_priv *port_priv);
	#endif /* __ETHSW_H */