drivers/net/ethernet/pensando/ionic/ionic_dev.h - linux - Git at Google

 /* SPDX-License-Identifier: GPL-2.0 */
 /* Copyright(c) 2017 - 2019 Pensando Systems, Inc */

 #ifndef _IONIC_DEV_H_
 #define _IONIC_DEV_H_

 #include <linux/atomic.h>
 #include <linux/mutex.h>
 #include <linux/workqueue.h>
 #include <linux/skbuff.h>
 #include <linux/bpf_trace.h>

 #include "ionic_if.h"
 #include "ionic_regs.h"

 #define IONIC_MAX_TX_DESC		8192
 #define IONIC_MAX_RX_DESC		16384
 #define IONIC_MIN_TXRX_DESC		64
 #define IONIC_DEF_TXRX_DESC		1024
 #define IONIC_RX_FILL_THRESHOLD		16
 #define IONIC_RX_FILL_DIV		8
 #define IONIC_TSO_DESCS_NEEDED		44 /* 64K TSO @1500B */
 #define IONIC_LIFS_MAX			1024
 #define IONIC_WATCHDOG_SECS		5
 #define IONIC_ITR_COAL_USEC_DEFAULT	64

 #define IONIC_DEV_CMD_REG_VERSION	1
 #define IONIC_DEV_INFO_REG_COUNT	32
 #define IONIC_DEV_CMD_REG_COUNT		32

 #define IONIC_NAPI_DEADLINE		(HZ)		/* 1 sec */
 #define IONIC_ADMIN_DOORBELL_DEADLINE	(HZ / 2)	/* 500ms */
 #define IONIC_TX_DOORBELL_DEADLINE	(HZ / 100)	/* 10ms */
 #define IONIC_RX_MIN_DOORBELL_DEADLINE	(HZ / 100)	/* 10ms */
 #define IONIC_RX_MAX_DOORBELL_DEADLINE	(HZ * 5)	/* 5s */

 struct ionic_dev_bar {
 	void __iomem *vaddr;
 	phys_addr_t bus_addr;
 	unsigned long len;
 	int res_index;
 };

 #ifndef __CHECKER__
 /* Registers */
 static_assert(sizeof(struct ionic_intr) == 32);

 static_assert(sizeof(struct ionic_doorbell) == 8);
 static_assert(sizeof(struct ionic_intr_status) == 8);
 static_assert(sizeof(union ionic_dev_regs) == 4096);
 static_assert(sizeof(union ionic_dev_info_regs) == 2048);
 static_assert(sizeof(union ionic_dev_cmd_regs) == 2048);
 static_assert(sizeof(struct ionic_lif_stats) == 1024);

 static_assert(sizeof(struct ionic_admin_cmd) == 64);
 static_assert(sizeof(struct ionic_admin_comp) == 16);
 static_assert(sizeof(struct ionic_nop_cmd) == 64);
 static_assert(sizeof(struct ionic_nop_comp) == 16);

 /* Device commands */
 static_assert(sizeof(struct ionic_dev_identify_cmd) == 64);
 static_assert(sizeof(struct ionic_dev_identify_comp) == 16);
 static_assert(sizeof(struct ionic_dev_init_cmd) == 64);
 static_assert(sizeof(struct ionic_dev_init_comp) == 16);
 static_assert(sizeof(struct ionic_dev_reset_cmd) == 64);
 static_assert(sizeof(struct ionic_dev_reset_comp) == 16);
 static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64);
 static_assert(sizeof(struct ionic_dev_getattr_comp) == 16);
 static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64);
 static_assert(sizeof(struct ionic_dev_setattr_comp) == 16);
 static_assert(sizeof(struct ionic_lif_setphc_cmd) == 64);

 /* Port commands */
 static_assert(sizeof(struct ionic_port_identify_cmd) == 64);
 static_assert(sizeof(struct ionic_port_identify_comp) == 16);
 static_assert(sizeof(struct ionic_port_init_cmd) == 64);
 static_assert(sizeof(struct ionic_port_init_comp) == 16);
 static_assert(sizeof(struct ionic_port_reset_cmd) == 64);
 static_assert(sizeof(struct ionic_port_reset_comp) == 16);
 static_assert(sizeof(struct ionic_port_getattr_cmd) == 64);
 static_assert(sizeof(struct ionic_port_getattr_comp) == 16);
 static_assert(sizeof(struct ionic_port_setattr_cmd) == 64);
 static_assert(sizeof(struct ionic_port_setattr_comp) == 16);

 /* LIF commands */
 static_assert(sizeof(struct ionic_lif_init_cmd) == 64);
 static_assert(sizeof(struct ionic_lif_init_comp) == 16);
 static_assert(sizeof(struct ionic_lif_reset_cmd) == 64);
 static_assert(sizeof(ionic_lif_reset_comp) == 16);
 static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64);
 static_assert(sizeof(struct ionic_lif_getattr_comp) == 16);
 static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64);
 static_assert(sizeof(struct ionic_lif_setattr_comp) == 16);

 static_assert(sizeof(struct ionic_q_init_cmd) == 64);
 static_assert(sizeof(struct ionic_q_init_comp) == 16);
 static_assert(sizeof(struct ionic_q_control_cmd) == 64);
 static_assert(sizeof(ionic_q_control_comp) == 16);
 static_assert(sizeof(struct ionic_q_identify_cmd) == 64);
 static_assert(sizeof(struct ionic_q_identify_comp) == 16);

 static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64);
 static_assert(sizeof(ionic_rx_mode_set_comp) == 16);
 static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64);
 static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16);
 static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64);
 static_assert(sizeof(ionic_rx_filter_del_comp) == 16);

 /* RDMA commands */
 static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64);
 static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64);

 /* Events */
 static_assert(sizeof(struct ionic_notifyq_cmd) == 4);
 static_assert(sizeof(union ionic_notifyq_comp) == 64);
 static_assert(sizeof(struct ionic_notifyq_event) == 64);
 static_assert(sizeof(struct ionic_link_change_event) == 64);
 static_assert(sizeof(struct ionic_reset_event) == 64);
 static_assert(sizeof(struct ionic_heartbeat_event) == 64);
 static_assert(sizeof(struct ionic_log_event) == 64);

 /* I/O */
 static_assert(sizeof(struct ionic_txq_desc) == 16);
 static_assert(sizeof(struct ionic_txq_sg_desc) == 128);
 static_assert(sizeof(struct ionic_txq_sg_desc_v1) == 256);
 static_assert(sizeof(struct ionic_txq_comp) == 16);

 static_assert(sizeof(struct ionic_rxq_desc) == 16);
 static_assert(sizeof(struct ionic_rxq_sg_desc) == 128);
 static_assert(sizeof(struct ionic_rxq_comp) == 16);
 static_assert(sizeof(struct ionic_rxq_comp) == sizeof(struct ionic_txq_comp));

 /* SR/IOV */
 static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64);
 static_assert(sizeof(struct ionic_vf_setattr_comp) == 16);
 static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64);
 static_assert(sizeof(struct ionic_vf_getattr_comp) == 16);
 static_assert(sizeof(struct ionic_vf_ctrl_cmd) == 64);
 static_assert(sizeof(struct ionic_vf_ctrl_comp) == 16);
 #endif /* __CHECKER__ */

 struct ionic_devinfo {
 	u8 asic_type;
 	u8 asic_rev;
 	char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1];
 	char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1];
 };

 struct ionic_dev {
 	union ionic_dev_info_regs __iomem *dev_info_regs;
 	union ionic_dev_cmd_regs __iomem *dev_cmd_regs;
 	struct ionic_hwstamp_regs __iomem *hwstamp_regs;

 	atomic_long_t last_check_time;
 	unsigned long last_hb_time;
 	u32 last_fw_hb;
 	bool fw_hb_ready;
 	bool fw_status_ready;
 	u8 fw_generation;
 	u8 opcode;

 	u64 __iomem *db_pages;
 	dma_addr_t phy_db_pages;

 	struct ionic_intr __iomem *intr_ctrl;
 	u64 __iomem *intr_status;

 	struct mutex cmb_inuse_lock; /* for cmb_inuse */
 	unsigned long *cmb_inuse;
 	dma_addr_t phy_cmb_pages;
 	u32 cmb_npages;

 	u32 port_info_sz;
 	struct ionic_port_info *port_info;
 	dma_addr_t port_info_pa;

 	struct ionic_devinfo dev_info;
 };

 struct ionic_queue;
 struct ionic_qcq;

 #define IONIC_MAX_BUF_LEN			((u16)-1)
 #define IONIC_PAGE_SIZE				PAGE_SIZE
 #define IONIC_PAGE_SPLIT_SZ			(PAGE_SIZE / 2)
 #define IONIC_PAGE_GFP_MASK			(GFP_ATOMIC | __GFP_NOWARN |\
 						 __GFP_COMP | __GFP_MEMALLOC)

 #define IONIC_XDP_MAX_LINEAR_MTU	(IONIC_PAGE_SIZE -	\
 					 (VLAN_ETH_HLEN +	\
 					  XDP_PACKET_HEADROOM +	\
 					  SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))

 struct ionic_buf_info {
 	struct page *page;
 	dma_addr_t dma_addr;
 	u32 page_offset;
 	u32 len;
 };

 #define IONIC_TX_MAX_FRAGS			(1 + IONIC_TX_MAX_SG_ELEMS_V1)
 #define IONIC_RX_MAX_FRAGS			(1 + IONIC_RX_MAX_SG_ELEMS)

 struct ionic_tx_desc_info {
 	unsigned int bytes;
 	unsigned int nbufs;
 	struct sk_buff *skb;
 	struct xdp_frame *xdpf;
 	enum xdp_action act;
 	struct ionic_buf_info bufs[MAX_SKB_FRAGS + 1];
 };

 struct ionic_rx_desc_info {
 	unsigned int nbufs;
 	struct ionic_buf_info bufs[IONIC_RX_MAX_FRAGS];
 };

 struct ionic_admin_desc_info {
 	void *ctx;
 };

 #define IONIC_QUEUE_NAME_MAX_SZ		16

 struct ionic_queue {
 	struct device *dev;
 	struct ionic_lif *lif;
 	union {
 		void *info;
 		struct ionic_tx_desc_info *tx_info;
 		struct ionic_rx_desc_info *rx_info;
 		struct ionic_admin_desc_info *admin_info;
 	};
 	u64 dbval;
 	unsigned long dbell_deadline;
 	unsigned long dbell_jiffies;
 	u16 head_idx;
 	u16 tail_idx;
 	unsigned int index;
 	unsigned int num_descs;
 	unsigned int max_sg_elems;
 	u64 features;
 	unsigned int type;
 	unsigned int hw_index;
 	unsigned int hw_type;
 	bool xdp_flush;
 	union {
 		void *base;
 		struct ionic_txq_desc *txq;
 		struct ionic_rxq_desc *rxq;
 		struct ionic_admin_cmd *adminq;
 	};
 	union {
 		void __iomem *cmb_base;
 		struct ionic_txq_desc __iomem *cmb_txq;
 		struct ionic_rxq_desc __iomem *cmb_rxq;
 	};
 	union {
 		void *sg_base;
 		struct ionic_txq_sg_desc *txq_sgl;
 		struct ionic_txq_sg_desc_v1 *txq_sgl_v1;
 		struct ionic_rxq_sg_desc *rxq_sgl;
 	};
 	struct xdp_rxq_info *xdp_rxq_info;
 	struct ionic_queue *partner;
 	dma_addr_t base_pa;
 	dma_addr_t cmb_base_pa;
 	dma_addr_t sg_base_pa;
 	u64 drop;
 	unsigned int desc_size;
 	unsigned int sg_desc_size;
 	unsigned int pid;
 	char name[IONIC_QUEUE_NAME_MAX_SZ];
 } ____cacheline_aligned_in_smp;

 #define IONIC_INTR_INDEX_NOT_ASSIGNED	-1
 #define IONIC_INTR_NAME_MAX_SZ		32

 struct ionic_intr_info {
 	char name[IONIC_INTR_NAME_MAX_SZ];
 	u64 rearm_count;
 	unsigned int index;
 	unsigned int vector;
 	u32 dim_coal_hw;
 	cpumask_var_t *affinity_mask;
 	struct irq_affinity_notify aff_notify;
 };

 struct ionic_cq {
 	struct ionic_lif *lif;
 	struct ionic_queue *bound_q;
 	struct ionic_intr_info *bound_intr;
 	u16 tail_idx;
 	bool done_color;
 	unsigned int num_descs;
 	unsigned int desc_size;
 	void *base;
 	dma_addr_t base_pa;
 	struct ionic_dev *idev;
 } ____cacheline_aligned_in_smp;

 struct ionic;

 static inline void ionic_intr_init(struct ionic_dev *idev,
 				   struct ionic_intr_info *intr,
 				   unsigned long index)
 {
 	ionic_intr_clean(idev->intr_ctrl, index);
 	intr->index = index;
 }

 static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
 {
 	unsigned int avail = q->tail_idx;

 	if (q->head_idx >= avail)
 		avail += q->num_descs - q->head_idx - 1;
 	else
 		avail -= q->head_idx + 1;

 	return avail;
 }

 static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
 {
 	return ionic_q_space_avail(q) >= want;
 }

 void ionic_init_devinfo(struct ionic *ionic);
 int ionic_dev_setup(struct ionic *ionic);
 void ionic_dev_teardown(struct ionic *ionic);

 void ionic_dev_cmd_go(struct ionic_dev *idev, union ionic_dev_cmd *cmd);
 u8 ionic_dev_cmd_status(struct ionic_dev *idev);
 bool ionic_dev_cmd_done(struct ionic_dev *idev);
 void ionic_dev_cmd_comp(struct ionic_dev *idev, union ionic_dev_cmd_comp *comp);

 void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
 void ionic_dev_cmd_init(struct ionic_dev *idev);
 void ionic_dev_cmd_reset(struct ionic_dev *idev);

 void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
 void ionic_dev_cmd_port_init(struct ionic_dev *idev);
 void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
 void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
 void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
 void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
 void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
 void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);

 int ionic_set_vf_config(struct ionic *ionic, int vf,
 			struct ionic_vf_setattr_cmd *vfc);

 void ionic_dev_cmd_queue_identify(struct ionic_dev *idev,
 				  u16 lif_type, u8 qtype, u8 qver);
 void ionic_vf_start(struct ionic *ionic);
 void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
 void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
 			    dma_addr_t addr);
 void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
 void ionic_dev_cmd_adminq_init(struct ionic_dev *idev, struct ionic_qcq *qcq,
 			       u16 lif_index, u16 intr_index);

 int ionic_db_page_num(struct ionic_lif *lif, int pid);

 int ionic_get_cmb(struct ionic_lif *lif, u32 *pgid, phys_addr_t *pgaddr, int order);
 void ionic_put_cmb(struct ionic_lif *lif, u32 pgid, int order);

 int ionic_cq_init(struct ionic_lif *lif, struct ionic_cq *cq,
 		  struct ionic_intr_info *intr,
 		  unsigned int num_descs, size_t desc_size);
 void ionic_cq_map(struct ionic_cq *cq, void *base, dma_addr_t base_pa);
 void ionic_cq_bind(struct ionic_cq *cq, struct ionic_queue *q);
 typedef bool (*ionic_cq_cb)(struct ionic_cq *cq);
 typedef void (*ionic_cq_done_cb)(void *done_arg);
 unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
 			      ionic_cq_cb cb, ionic_cq_done_cb done_cb,
 			      void *done_arg);
 unsigned int ionic_tx_cq_service(struct ionic_cq *cq,
 				 unsigned int work_to_do,
 				 bool in_napi);

 int ionic_q_init(struct ionic_lif *lif, struct ionic_dev *idev,
 		 struct ionic_queue *q, unsigned int index, const char *name,
 		 unsigned int num_descs, size_t desc_size,
 		 size_t sg_desc_size, unsigned int pid);
 void ionic_q_post(struct ionic_queue *q, bool ring_doorbell);
 bool ionic_q_is_posted(struct ionic_queue *q, unsigned int pos);

 int ionic_heartbeat_check(struct ionic *ionic);
 bool ionic_is_fw_running(struct ionic_dev *idev);
 void ionic_doorbell_napi_work(struct work_struct *work);
 void ionic_queue_doorbell_check(struct ionic *ionic, int delay);

 bool ionic_adminq_poke_doorbell(struct ionic_queue *q);
 bool ionic_txq_poke_doorbell(struct ionic_queue *q);
 bool ionic_rxq_poke_doorbell(struct ionic_queue *q);

 #endif /* _IONIC_DEV_H_ */
	/* SPDX-License-Identifier: GPL-2.0 */
	/* Copyright(c) 2017 - 2019 Pensando Systems, Inc */

	#ifndef _IONIC_DEV_H_
	#define _IONIC_DEV_H_

	#include <linux/atomic.h>
	#include <linux/mutex.h>
	#include <linux/workqueue.h>
	#include <linux/skbuff.h>
	#include <linux/bpf_trace.h>

	#include "ionic_if.h"
	#include "ionic_regs.h"

	#define IONIC_MAX_TX_DESC 8192
	#define IONIC_MAX_RX_DESC 16384
	#define IONIC_MIN_TXRX_DESC 64
	#define IONIC_DEF_TXRX_DESC 1024
	#define IONIC_RX_FILL_THRESHOLD 16
	#define IONIC_RX_FILL_DIV 8
	#define IONIC_TSO_DESCS_NEEDED 44 /* 64K TSO @1500B */
	#define IONIC_LIFS_MAX 1024
	#define IONIC_WATCHDOG_SECS 5
	#define IONIC_ITR_COAL_USEC_DEFAULT 64

	#define IONIC_DEV_CMD_REG_VERSION 1
	#define IONIC_DEV_INFO_REG_COUNT 32
	#define IONIC_DEV_CMD_REG_COUNT 32

	#define IONIC_NAPI_DEADLINE (HZ) /* 1 sec */
	#define IONIC_ADMIN_DOORBELL_DEADLINE (HZ / 2) /* 500ms */
	#define IONIC_TX_DOORBELL_DEADLINE (HZ / 100) /* 10ms */
	#define IONIC_RX_MIN_DOORBELL_DEADLINE (HZ / 100) /* 10ms */
	#define IONIC_RX_MAX_DOORBELL_DEADLINE (HZ * 5) /* 5s */

	struct ionic_dev_bar {
	void __iomem *vaddr;
	phys_addr_t bus_addr;
	unsigned long len;
	int res_index;
	};

	#ifndef __CHECKER__
	/* Registers */
	static_assert(sizeof(struct ionic_intr) == 32);

	static_assert(sizeof(struct ionic_doorbell) == 8);
	static_assert(sizeof(struct ionic_intr_status) == 8);
	static_assert(sizeof(union ionic_dev_regs) == 4096);
	static_assert(sizeof(union ionic_dev_info_regs) == 2048);
	static_assert(sizeof(union ionic_dev_cmd_regs) == 2048);
	static_assert(sizeof(struct ionic_lif_stats) == 1024);

	static_assert(sizeof(struct ionic_admin_cmd) == 64);
	static_assert(sizeof(struct ionic_admin_comp) == 16);
	static_assert(sizeof(struct ionic_nop_cmd) == 64);
	static_assert(sizeof(struct ionic_nop_comp) == 16);

	/* Device commands */
	static_assert(sizeof(struct ionic_dev_identify_cmd) == 64);
	static_assert(sizeof(struct ionic_dev_identify_comp) == 16);
	static_assert(sizeof(struct ionic_dev_init_cmd) == 64);
	static_assert(sizeof(struct ionic_dev_init_comp) == 16);
	static_assert(sizeof(struct ionic_dev_reset_cmd) == 64);
	static_assert(sizeof(struct ionic_dev_reset_comp) == 16);
	static_assert(sizeof(struct ionic_dev_getattr_cmd) == 64);
	static_assert(sizeof(struct ionic_dev_getattr_comp) == 16);
	static_assert(sizeof(struct ionic_dev_setattr_cmd) == 64);
	static_assert(sizeof(struct ionic_dev_setattr_comp) == 16);
	static_assert(sizeof(struct ionic_lif_setphc_cmd) == 64);

	/* Port commands */
	static_assert(sizeof(struct ionic_port_identify_cmd) == 64);
	static_assert(sizeof(struct ionic_port_identify_comp) == 16);
	static_assert(sizeof(struct ionic_port_init_cmd) == 64);
	static_assert(sizeof(struct ionic_port_init_comp) == 16);
	static_assert(sizeof(struct ionic_port_reset_cmd) == 64);
	static_assert(sizeof(struct ionic_port_reset_comp) == 16);
	static_assert(sizeof(struct ionic_port_getattr_cmd) == 64);
	static_assert(sizeof(struct ionic_port_getattr_comp) == 16);
	static_assert(sizeof(struct ionic_port_setattr_cmd) == 64);
	static_assert(sizeof(struct ionic_port_setattr_comp) == 16);

	/* LIF commands */
	static_assert(sizeof(struct ionic_lif_init_cmd) == 64);
	static_assert(sizeof(struct ionic_lif_init_comp) == 16);
	static_assert(sizeof(struct ionic_lif_reset_cmd) == 64);
	static_assert(sizeof(ionic_lif_reset_comp) == 16);
	static_assert(sizeof(struct ionic_lif_getattr_cmd) == 64);
	static_assert(sizeof(struct ionic_lif_getattr_comp) == 16);
	static_assert(sizeof(struct ionic_lif_setattr_cmd) == 64);
	static_assert(sizeof(struct ionic_lif_setattr_comp) == 16);

	static_assert(sizeof(struct ionic_q_init_cmd) == 64);
	static_assert(sizeof(struct ionic_q_init_comp) == 16);
	static_assert(sizeof(struct ionic_q_control_cmd) == 64);
	static_assert(sizeof(ionic_q_control_comp) == 16);
	static_assert(sizeof(struct ionic_q_identify_cmd) == 64);
	static_assert(sizeof(struct ionic_q_identify_comp) == 16);

	static_assert(sizeof(struct ionic_rx_mode_set_cmd) == 64);
	static_assert(sizeof(ionic_rx_mode_set_comp) == 16);
	static_assert(sizeof(struct ionic_rx_filter_add_cmd) == 64);
	static_assert(sizeof(struct ionic_rx_filter_add_comp) == 16);
	static_assert(sizeof(struct ionic_rx_filter_del_cmd) == 64);
	static_assert(sizeof(ionic_rx_filter_del_comp) == 16);

	/* RDMA commands */
	static_assert(sizeof(struct ionic_rdma_reset_cmd) == 64);
	static_assert(sizeof(struct ionic_rdma_queue_cmd) == 64);

	/* Events */
	static_assert(sizeof(struct ionic_notifyq_cmd) == 4);
	static_assert(sizeof(union ionic_notifyq_comp) == 64);
	static_assert(sizeof(struct ionic_notifyq_event) == 64);
	static_assert(sizeof(struct ionic_link_change_event) == 64);
	static_assert(sizeof(struct ionic_reset_event) == 64);
	static_assert(sizeof(struct ionic_heartbeat_event) == 64);
	static_assert(sizeof(struct ionic_log_event) == 64);

	/* I/O */
	static_assert(sizeof(struct ionic_txq_desc) == 16);
	static_assert(sizeof(struct ionic_txq_sg_desc) == 128);
	static_assert(sizeof(struct ionic_txq_sg_desc_v1) == 256);
	static_assert(sizeof(struct ionic_txq_comp) == 16);

	static_assert(sizeof(struct ionic_rxq_desc) == 16);
	static_assert(sizeof(struct ionic_rxq_sg_desc) == 128);
	static_assert(sizeof(struct ionic_rxq_comp) == 16);
	static_assert(sizeof(struct ionic_rxq_comp) == sizeof(struct ionic_txq_comp));

	/* SR/IOV */
	static_assert(sizeof(struct ionic_vf_setattr_cmd) == 64);
	static_assert(sizeof(struct ionic_vf_setattr_comp) == 16);
	static_assert(sizeof(struct ionic_vf_getattr_cmd) == 64);
	static_assert(sizeof(struct ionic_vf_getattr_comp) == 16);
	static_assert(sizeof(struct ionic_vf_ctrl_cmd) == 64);
	static_assert(sizeof(struct ionic_vf_ctrl_comp) == 16);
	#endif /* __CHECKER__ */

	struct ionic_devinfo {
	u8 asic_type;
	u8 asic_rev;
	char fw_version[IONIC_DEVINFO_FWVERS_BUFLEN + 1];
	char serial_num[IONIC_DEVINFO_SERIAL_BUFLEN + 1];
	};

	struct ionic_dev {
	union ionic_dev_info_regs __iomem *dev_info_regs;
	union ionic_dev_cmd_regs __iomem *dev_cmd_regs;
	struct ionic_hwstamp_regs __iomem *hwstamp_regs;

	atomic_long_t last_check_time;
	unsigned long last_hb_time;
	u32 last_fw_hb;
	bool fw_hb_ready;
	bool fw_status_ready;
	u8 fw_generation;
	u8 opcode;

	u64 __iomem *db_pages;
	dma_addr_t phy_db_pages;

	struct ionic_intr __iomem *intr_ctrl;
	u64 __iomem *intr_status;

	struct mutex cmb_inuse_lock; /* for cmb_inuse */
	unsigned long *cmb_inuse;
	dma_addr_t phy_cmb_pages;
	u32 cmb_npages;

	u32 port_info_sz;
	struct ionic_port_info *port_info;
	dma_addr_t port_info_pa;

	struct ionic_devinfo dev_info;
	};

	struct ionic_queue;
	struct ionic_qcq;

	#define IONIC_MAX_BUF_LEN ((u16)-1)
	#define IONIC_PAGE_SIZE PAGE_SIZE
	#define IONIC_PAGE_SPLIT_SZ (PAGE_SIZE / 2)
	#define IONIC_PAGE_GFP_MASK (GFP_ATOMIC \| __GFP_NOWARN \|\
	__GFP_COMP \| __GFP_MEMALLOC)

	#define IONIC_XDP_MAX_LINEAR_MTU (IONIC_PAGE_SIZE - \
	(VLAN_ETH_HLEN + \
	XDP_PACKET_HEADROOM + \
	SKB_DATA_ALIGN(sizeof(struct skb_shared_info))))

	struct ionic_buf_info {
	struct page *page;
	dma_addr_t dma_addr;
	u32 page_offset;
	u32 len;
	};

	#define IONIC_TX_MAX_FRAGS (1 + IONIC_TX_MAX_SG_ELEMS_V1)
	#define IONIC_RX_MAX_FRAGS (1 + IONIC_RX_MAX_SG_ELEMS)

	struct ionic_tx_desc_info {
	unsigned int bytes;
	unsigned int nbufs;
	struct sk_buff *skb;
	struct xdp_frame *xdpf;
	enum xdp_action act;
	struct ionic_buf_info bufs[MAX_SKB_FRAGS + 1];
	};

	struct ionic_rx_desc_info {
	unsigned int nbufs;
	struct ionic_buf_info bufs[IONIC_RX_MAX_FRAGS];
	};

	struct ionic_admin_desc_info {
	void *ctx;
	};

	#define IONIC_QUEUE_NAME_MAX_SZ 16

	struct ionic_queue {
	struct device *dev;
	struct ionic_lif *lif;
	union {
	void *info;
	struct ionic_tx_desc_info *tx_info;
	struct ionic_rx_desc_info *rx_info;
	struct ionic_admin_desc_info *admin_info;
	};
	u64 dbval;
	unsigned long dbell_deadline;
	unsigned long dbell_jiffies;
	u16 head_idx;
	u16 tail_idx;
	unsigned int index;
	unsigned int num_descs;
	unsigned int max_sg_elems;
	u64 features;
	unsigned int type;
	unsigned int hw_index;
	unsigned int hw_type;
	bool xdp_flush;
	union {
	void *base;
	struct ionic_txq_desc *txq;
	struct ionic_rxq_desc *rxq;
	struct ionic_admin_cmd *adminq;
	};
	union {
	void __iomem *cmb_base;
	struct ionic_txq_desc __iomem *cmb_txq;
	struct ionic_rxq_desc __iomem *cmb_rxq;
	};
	union {
	void *sg_base;
	struct ionic_txq_sg_desc *txq_sgl;
	struct ionic_txq_sg_desc_v1 *txq_sgl_v1;
	struct ionic_rxq_sg_desc *rxq_sgl;
	};
	struct xdp_rxq_info *xdp_rxq_info;
	struct ionic_queue *partner;
	dma_addr_t base_pa;
	dma_addr_t cmb_base_pa;
	dma_addr_t sg_base_pa;
	u64 drop;
	unsigned int desc_size;
	unsigned int sg_desc_size;
	unsigned int pid;
	char name[IONIC_QUEUE_NAME_MAX_SZ];
	} ____cacheline_aligned_in_smp;

	#define IONIC_INTR_INDEX_NOT_ASSIGNED -1
	#define IONIC_INTR_NAME_MAX_SZ 32

	struct ionic_intr_info {
	char name[IONIC_INTR_NAME_MAX_SZ];
	u64 rearm_count;
	unsigned int index;
	unsigned int vector;
	u32 dim_coal_hw;
	cpumask_var_t *affinity_mask;
	struct irq_affinity_notify aff_notify;
	};

	struct ionic_cq {
	struct ionic_lif *lif;
	struct ionic_queue *bound_q;
	struct ionic_intr_info *bound_intr;
	u16 tail_idx;
	bool done_color;
	unsigned int num_descs;
	unsigned int desc_size;
	void *base;
	dma_addr_t base_pa;
	struct ionic_dev *idev;
	} ____cacheline_aligned_in_smp;

	struct ionic;

	static inline void ionic_intr_init(struct ionic_dev *idev,
	struct ionic_intr_info *intr,
	unsigned long index)
	{
	ionic_intr_clean(idev->intr_ctrl, index);
	intr->index = index;
	}

	static inline unsigned int ionic_q_space_avail(struct ionic_queue *q)
	{
	unsigned int avail = q->tail_idx;

	if (q->head_idx >= avail)
	avail += q->num_descs - q->head_idx - 1;
	else
	avail -= q->head_idx + 1;

	return avail;
	}

	static inline bool ionic_q_has_space(struct ionic_queue *q, unsigned int want)
	{
	return ionic_q_space_avail(q) >= want;
	}

	void ionic_init_devinfo(struct ionic *ionic);
	int ionic_dev_setup(struct ionic *ionic);
	void ionic_dev_teardown(struct ionic *ionic);

	void ionic_dev_cmd_go(struct ionic_dev idev, union ionic_dev_cmd cmd);
	u8 ionic_dev_cmd_status(struct ionic_dev *idev);
	bool ionic_dev_cmd_done(struct ionic_dev *idev);
	void ionic_dev_cmd_comp(struct ionic_dev idev, union ionic_dev_cmd_comp comp);

	void ionic_dev_cmd_identify(struct ionic_dev *idev, u8 ver);
	void ionic_dev_cmd_init(struct ionic_dev *idev);
	void ionic_dev_cmd_reset(struct ionic_dev *idev);

	void ionic_dev_cmd_port_identify(struct ionic_dev *idev);
	void ionic_dev_cmd_port_init(struct ionic_dev *idev);
	void ionic_dev_cmd_port_reset(struct ionic_dev *idev);
	void ionic_dev_cmd_port_state(struct ionic_dev *idev, u8 state);
	void ionic_dev_cmd_port_speed(struct ionic_dev *idev, u32 speed);
	void ionic_dev_cmd_port_autoneg(struct ionic_dev *idev, u8 an_enable);
	void ionic_dev_cmd_port_fec(struct ionic_dev *idev, u8 fec_type);
	void ionic_dev_cmd_port_pause(struct ionic_dev *idev, u8 pause_type);

	int ionic_set_vf_config(struct ionic *ionic, int vf,
	struct ionic_vf_setattr_cmd *vfc);

	void ionic_dev_cmd_queue_identify(struct ionic_dev *idev,
	u16 lif_type, u8 qtype, u8 qver);
	void ionic_vf_start(struct ionic *ionic);
	void ionic_dev_cmd_lif_identify(struct ionic_dev *idev, u8 type, u8 ver);
	void ionic_dev_cmd_lif_init(struct ionic_dev *idev, u16 lif_index,
	dma_addr_t addr);
	void ionic_dev_cmd_lif_reset(struct ionic_dev *idev, u16 lif_index);
	void ionic_dev_cmd_adminq_init(struct ionic_dev idev, struct ionic_qcq qcq,
	u16 lif_index, u16 intr_index);

	int ionic_db_page_num(struct ionic_lif *lif, int pid);

	int ionic_get_cmb(struct ionic_lif lif, u32 pgid, phys_addr_t *pgaddr, int order);
	void ionic_put_cmb(struct ionic_lif *lif, u32 pgid, int order);

	int ionic_cq_init(struct ionic_lif lif, struct ionic_cq cq,
	struct ionic_intr_info *intr,
	unsigned int num_descs, size_t desc_size);
	void ionic_cq_map(struct ionic_cq cq, void base, dma_addr_t base_pa);
	void ionic_cq_bind(struct ionic_cq cq, struct ionic_queue q);
	typedef bool (ionic_cq_cb)(struct ionic_cq cq);
	typedef void (ionic_cq_done_cb)(void done_arg);
	unsigned int ionic_cq_service(struct ionic_cq *cq, unsigned int work_to_do,
	ionic_cq_cb cb, ionic_cq_done_cb done_cb,
	void *done_arg);
	unsigned int ionic_tx_cq_service(struct ionic_cq *cq,
	unsigned int work_to_do,
	bool in_napi);

	int ionic_q_init(struct ionic_lif lif, struct ionic_dev idev,
	struct ionic_queue q, unsigned int index, const char name,
	unsigned int num_descs, size_t desc_size,
	size_t sg_desc_size, unsigned int pid);
	void ionic_q_post(struct ionic_queue *q, bool ring_doorbell);
	bool ionic_q_is_posted(struct ionic_queue *q, unsigned int pos);

	int ionic_heartbeat_check(struct ionic *ionic);
	bool ionic_is_fw_running(struct ionic_dev *idev);
	void ionic_doorbell_napi_work(struct work_struct *work);
	void ionic_queue_doorbell_check(struct ionic *ionic, int delay);

	bool ionic_adminq_poke_doorbell(struct ionic_queue *q);
	bool ionic_txq_poke_doorbell(struct ionic_queue *q);
	bool ionic_rxq_poke_doorbell(struct ionic_queue *q);

	#endif /* _IONIC_DEV_H_ */