qede: Add basic network device support

#define QEDE_MAX_TSS_CNT(edev)	((edev)->dev_info.num_queues * \

				 (edev)->dev_info.num_tc)

	struct qede_fastpath		*fp_array;

	u16				num_rss;

	u8				num_tc;

#define QEDE_RSS_CNT(edev)		((edev)->num_rss)

					 (edev)->num_tc)

#define QEDE_TSS_IDX(edev, txqidx)	((txqidx) % (edev)->num_rss)

#define QEDE_TC_IDX(edev, txqidx)	((txqidx) / (edev)->num_rss)

#define QEDE_TX_QUEUE(edev, txqidx)	\

	(&(edev)->fp_array[QEDE_TSS_IDX((edev), (txqidx))].txqs[QEDE_TC_IDX( \

							(edev), (txqidx))])

	struct qed_int_info		int_info;

	unsigned char			primary_mac[ETH_ALEN];

	/* Smaller private varaiant of the RTNL lock */

	struct mutex			qede_lock;

	u32				state; /* Protected by qede_lock */

	u16				rx_buf_size;

	/* L2 header size + 2*VLANs (8 bytes) + LLC SNAP (8 bytes) */

#define ETH_OVERHEAD			(ETH_HLEN + 8 + 8)

	/* Max supported alignment is 256 (8 shift)

	 * minimal alignment shift 6 is optimal for 57xxx HW performance

	 */

#define QEDE_RX_ALIGN_SHIFT		max(6, min(8, L1_CACHE_SHIFT))

	/* We assume skb_build() uses sizeof(struct skb_shared_info) bytes

	 * at the end of skb->data, to avoid wasting a full cache line.

	 * This reduces memory use (skb->truesize).

	 */

#define QEDE_FW_RX_ALIGN_END					\

	max_t(u64, 1UL << QEDE_RX_ALIGN_SHIFT,			\

	      SKB_DATA_ALIGN(sizeof(struct skb_shared_info)))

	struct qed_update_vport_rss_params	rss_params;

	u16			q_num_rx_buffers; /* Must be a power of two */

	u16			q_num_tx_buffers; /* Must be a power of two */

};

enum QEDE_STATE {

	QEDE_STATE_CLOSED,

	QEDE_STATE_OPEN,

};

#define HILO_U64(hi, lo)		((((u64)(hi)) << 32) + (lo))

#define	MAX_NUM_TC	8

#define	MAX_NUM_PRI	8

/* The driver supports the new build_skb() API:

 * RX ring buffer contains pointer to kmalloc() data only,

 * skb are built only after the frame was DMA-ed.

 */

struct sw_rx_data {

	u8 *data;

	DEFINE_DMA_UNMAP_ADDR(mapping);

};

struct qede_rx_queue {

	__le16			*hw_cons_ptr;

	struct sw_rx_data	*sw_rx_ring;

	u16			sw_rx_cons;

	u16			sw_rx_prod;

	struct qed_chain	rx_bd_ring;

	struct qed_chain	rx_comp_ring;

	void __iomem		*hw_rxq_prod_addr;

	int			rx_buf_size;

	u16			num_rx_buffers;

	u16			rxq_id;

	u64			rx_hw_errors;

	u64			rx_alloc_errors;

};

union db_prod {

	struct eth_db_data data;

	u32		raw;

};

struct sw_tx_bd {

	struct sk_buff *skb;

	u8 flags;

/* Set on the first BD descriptor when there is a split BD */

#define QEDE_TSO_SPLIT_BD		BIT(0)

};

struct qede_tx_queue {

	int			index; /* Queue index */

	__le16			*hw_cons_ptr;

	struct sw_tx_bd		*sw_tx_ring;

	u16			sw_tx_cons;

	u16			sw_tx_prod;

	struct qed_chain	tx_pbl;

	void __iomem		*doorbell_addr;

	union db_prod		tx_db;

	u16			num_tx_buffers;

};

#define BD_UNMAP_ADDR(bd)		HILO_U64(le32_to_cpu((bd)->addr.hi), \

						 le32_to_cpu((bd)->addr.lo))

#define BD_SET_UNMAP_ADDR_LEN(bd, maddr, len)				\

	do {								\

		(bd)->addr.hi = cpu_to_le32(upper_32_bits(maddr));	\

		(bd)->addr.lo = cpu_to_le32(lower_32_bits(maddr));	\

		(bd)->nbytes = cpu_to_le16(len);			\

	} while (0)

#define BD_UNMAP_LEN(bd)		(le16_to_cpu((bd)->nbytes))

struct qede_fastpath {

	struct qede_dev	*edev;

	u8			rss_id;

	struct napi_struct	napi;

	struct qed_sb_info	*sb_info;

	struct qede_rx_queue	*rxq;

	struct qede_tx_queue	*txqs;

#define VEC_NAME_SIZE	(sizeof(((struct net_device *)0)->name) + 8)

	char	name[VEC_NAME_SIZE];

};

/* Debug print definitions */

#define DP_NAME(edev) ((edev)->ndev->name)

#define XMIT_PLAIN		0

#define XMIT_L4_CSUM		BIT(0)

#define XMIT_LSO		BIT(1)

#define XMIT_ENC		BIT(2)

#define QEDE_CSUM_ERROR			BIT(0)

#define QEDE_CSUM_UNNECESSARY		BIT(1)

#define RX_RING_SIZE_POW	13

#define RX_RING_SIZE		BIT(RX_RING_SIZE_POW)

#define NUM_RX_BDS_MAX		(RX_RING_SIZE - 1)

#define NUM_RX_BDS_MIN		128

#define NUM_RX_BDS_DEF		NUM_RX_BDS_MAX

#define TX_RING_SIZE_POW	13

#define TX_RING_SIZE		BIT(TX_RING_SIZE_POW)

#define NUM_TX_BDS_MAX		(TX_RING_SIZE - 1)

#define NUM_TX_BDS_MIN		128

#define NUM_TX_BDS_DEF		NUM_TX_BDS_MAX

#define	for_each_rss(i) for (i = 0; i < edev->num_rss; i++)

#endif /* _QEDE_H_ */