[deliverable/linux.git] / drivers / net / ethernet / hisilicon / hns / hnae.h

/*
 * Copyright (c) 2014-2015 Hisilicon Limited.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 */

#ifndef __HNAE_H
#define __HNAE_H

/* Names used in this framework:
 *      ae handle (handle):
 *        a set of queues provided by AE
 *      ring buffer queue (rbq):
 *        the channel between upper layer and the AE, can do tx and rx
 *      ring:
 *        a tx or rx channel within a rbq
 *      ring description (desc):
 *        an element in the ring with packet information
 *      buffer:
 *        a memory region referred by desc with the full packet payload
 *
 * "num" means a static number set as a parameter, "count" mean a dynamic
 *   number set while running
 * "cb" means control block
 */

#include <linux/acpi.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/notifier.h>
#include <linux/phy.h>
#include <linux/types.h>

#define HNAE_DRIVER_VERSION "2.0"
#define HNAE_DRIVER_NAME "hns"
#define HNAE_COPYRIGHT "Copyright(c) 2015 Huawei Corporation."
#define HNAE_DRIVER_STRING "Hisilicon Network Subsystem Driver"
#define HNAE_DEFAULT_DEVICE_DESCR "Hisilicon Network Subsystem"

#ifdef DEBUG

#ifndef assert
#define assert(expr) \
do { \
	if (!(expr)) { \
		pr_err("Assertion failed! %s, %s, %s, line %d\n", \
			   #expr, __FILE__, __func__, __LINE__); \
	} \
} while (0)
#endif

#else

#ifndef assert
#define assert(expr)
#endif

#endif

#define AE_VERSION_1 ('6' << 16 | '6' << 8 | '0')
#define AE_VERSION_2 ('1' << 24 | '6' << 16 | '1' << 8 | '0')
#define AE_IS_VER1(ver) ((ver) == AE_VERSION_1)
#define AE_NAME_SIZE 16

/* some said the RX and TX RCB format should not be the same in the future. But
 * it is the same now...
 */
#define RCB_REG_BASEADDR_L         0x00 /* P660 support only 32bit accessing */
#define RCB_REG_BASEADDR_H         0x04
#define RCB_REG_BD_NUM             0x08
#define RCB_REG_BD_LEN             0x0C
#define RCB_REG_PKTLINE            0x10
#define RCB_REG_TAIL               0x18
#define RCB_REG_HEAD               0x1C
#define RCB_REG_FBDNUM             0x20
#define RCB_REG_OFFSET             0x24 /* pkt num to be handled */
#define RCB_REG_PKTNUM_RECORD      0x2C /* total pkt received */

#define HNS_RX_HEAD_SIZE 256

#define HNAE_AE_REGISTER 0x1

#define RCB_RING_NAME_LEN 16

enum hnae_led_state {
	HNAE_LED_INACTIVE,
	HNAE_LED_ACTIVE,
	HNAE_LED_ON,
	HNAE_LED_OFF
};

#define HNS_RX_FLAG_VLAN_PRESENT 0x1
#define HNS_RX_FLAG_L3ID_IPV4 0x0
#define HNS_RX_FLAG_L3ID_IPV6 0x1
#define HNS_RX_FLAG_L4ID_UDP 0x0
#define HNS_RX_FLAG_L4ID_TCP 0x1

#define HNS_TXD_ASID_S 0
#define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S)
#define HNS_TXD_BUFNUM_S 8
#define HNS_TXD_BUFNUM_M (0x3 << HNS_TXD_BUFNUM_S)
#define HNS_TXD_PORTID_S 10
#define HNS_TXD_PORTID_M (0x7 << HNS_TXD_PORTID_S)

#define HNS_TXD_RA_B 8
#define HNS_TXD_RI_B 9
#define HNS_TXD_L4CS_B 10
#define HNS_TXD_L3CS_B 11
#define HNS_TXD_FE_B 12
#define HNS_TXD_VLD_B 13
#define HNS_TXD_IPOFFSET_S 14
#define HNS_TXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S)

#define HNS_RXD_IPOFFSET_S 0
#define HNS_RXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S)
#define HNS_RXD_BUFNUM_S 8
#define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S)
#define HNS_RXD_PORTID_S 10
#define HNS_RXD_PORTID_M (0x7 << HNS_RXD_PORTID_S)
#define HNS_RXD_DMAC_S 13
#define HNS_RXD_DMAC_M (0x3 << HNS_RXD_DMAC_S)
#define HNS_RXD_VLAN_S 15
#define HNS_RXD_VLAN_M (0x3 << HNS_RXD_VLAN_S)
#define HNS_RXD_L3ID_S 17
#define HNS_RXD_L3ID_M (0xf << HNS_RXD_L3ID_S)
#define HNS_RXD_L4ID_S 21
#define HNS_RXD_L4ID_M (0xf << HNS_RXD_L4ID_S)
#define HNS_RXD_FE_B 25
#define HNS_RXD_FRAG_B 26
#define HNS_RXD_VLD_B 27
#define HNS_RXD_L2E_B 28
#define HNS_RXD_L3E_B 29
#define HNS_RXD_L4E_B 30
#define HNS_RXD_DROP_B 31

#define HNS_RXD_VLANID_S 8
#define HNS_RXD_VLANID_M (0xfff << HNS_RXD_VLANID_S)
#define HNS_RXD_CFI_B 20
#define HNS_RXD_PRI_S 21
#define HNS_RXD_PRI_M (0x7 << HNS_RXD_PRI_S)
#define HNS_RXD_ASID_S 24
#define HNS_RXD_ASID_M (0xff << HNS_RXD_ASID_S)

#define HNSV2_TXD_BUFNUM_S 0
#define HNSV2_TXD_BUFNUM_M (0x7 << HNSV2_TXD_BUFNUM_S)
#define HNSV2_TXD_PORTID_S	4
#define HNSV2_TXD_PORTID_M	(0X7 << HNSV2_TXD_PORTID_S)
#define HNSV2_TXD_RI_B   1
#define HNSV2_TXD_L4CS_B   2
#define HNSV2_TXD_L3CS_B   3
#define HNSV2_TXD_FE_B   4
#define HNSV2_TXD_VLD_B  5

#define HNSV2_TXD_TSE_B   0
#define HNSV2_TXD_VLAN_EN_B   1
#define HNSV2_TXD_SNAP_B   2
#define HNSV2_TXD_IPV6_B   3
#define HNSV2_TXD_SCTP_B   4

/* hardware spec ring buffer format */
struct __packed hnae_desc {
	__le64 addr;
	union {
		struct {
			union {
				__le16 asid_bufnum_pid;
				__le16 asid;
			};
			__le16 send_size;
			union {
				__le32 flag_ipoffset;
				struct {
					__u8 bn_pid;
					__u8 ra_ri_cs_fe_vld;
					__u8 ip_offset;
					__u8 tse_vlan_snap_v6_sctp_nth;
				};
			};
			__le16 mss;
			__u8 l4_len;
			__u8 reserved1;
			__le16 paylen;
			__u8 vmid;
			__u8 qid;
			__le32 reserved2[2];
		} tx;

		struct {
			__le32 ipoff_bnum_pid_flag;
			__le16 pkt_len;
			__le16 size;
			union {
				__le32 vlan_pri_asid;
				struct {
					__le16 asid;
					__le16 vlan_cfi_pri;
				};
			};
			__le32 rss_hash;
			__le32 reserved_1[2];
		} rx;
	};
};

struct hnae_desc_cb {
	dma_addr_t dma; /* dma address of this desc */
	void *buf;      /* cpu addr for a desc */

	/* priv data for the desc, e.g. skb when use with ip stack*/
	void *priv;
	u16 page_offset;
	u16 reuse_flag;

	u16 length;     /* length of the buffer */

       /* desc type, used by the ring user to mark the type of the priv data */
	u16 type;
};

#define setflags(flags, bits) ((flags) |= (bits))
#define unsetflags(flags, bits) ((flags) &= ~(bits))

/* hnae_ring->flags fields */
#define RINGF_DIR 0x1	    /* TX or RX ring, set if TX */
#define is_tx_ring(ring) ((ring)->flags & RINGF_DIR)
#define is_rx_ring(ring) (!is_tx_ring(ring))
#define ring_to_dma_dir(ring) (is_tx_ring(ring) ? \
	DMA_TO_DEVICE : DMA_FROM_DEVICE)

struct ring_stats {
	u64 io_err_cnt;
	u64 sw_err_cnt;
	u64 seg_pkt_cnt;
	union {
		struct {
			u64 tx_pkts;
			u64 tx_bytes;
			u64 tx_err_cnt;
			u64 restart_queue;
			u64 tx_busy;
		};
		struct {
			u64 rx_pkts;
			u64 rx_bytes;
			u64 rx_err_cnt;
			u64 reuse_pg_cnt;
			u64 err_pkt_len;
			u64 non_vld_descs;
			u64 err_bd_num;
			u64 l2_err;
			u64 l3l4_csum_err;
		};
	};
};

struct hnae_queue;

struct hnae_ring {
	u8 __iomem *io_base; /* base io address for the ring */
	struct hnae_desc *desc; /* dma map address space */
	struct hnae_desc_cb *desc_cb;
	struct hnae_queue *q;
	int irq;
	char ring_name[RCB_RING_NAME_LEN];

	/* statistic */
	struct ring_stats stats;

	dma_addr_t desc_dma_addr;
	u32 buf_size;       /* size for hnae_desc->addr, preset by AE */
	u16 desc_num;       /* total number of desc */
	u16 max_desc_num_per_pkt;
	u16 max_raw_data_sz_per_desc;
	u16 max_pkt_size;
	int next_to_use;    /* idx of next spare desc */

	/* idx of lastest sent desc, the ring is empty when equal to
	 * next_to_use
	 */
	int next_to_clean;

	int flags;          /* ring attribute */
	int irq_init_flag;
};

#define ring_ptr_move_fw(ring, p) \
	((ring)->p = ((ring)->p + 1) % (ring)->desc_num)
#define ring_ptr_move_bw(ring, p) \
	((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num)

enum hns_desc_type {
	DESC_TYPE_SKB,
	DESC_TYPE_PAGE,
};

#define assert_is_ring_idx(ring, idx) \
	assert((idx) >= 0 && (idx) < (ring)->desc_num)

/* the distance between [begin, end) in a ring buffer
 * note: there is a unuse slot between the begin and the end
 */
static inline int ring_dist(struct hnae_ring *ring, int begin, int end)
{
	assert_is_ring_idx(ring, begin);
	assert_is_ring_idx(ring, end);

	return (end - begin + ring->desc_num) % ring->desc_num;
}

static inline int ring_space(struct hnae_ring *ring)
{
	return ring->desc_num -
		ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;
}

static inline int is_ring_empty(struct hnae_ring *ring)
{
	assert_is_ring_idx(ring, ring->next_to_use);
	assert_is_ring_idx(ring, ring->next_to_clean);

	return ring->next_to_use == ring->next_to_clean;
}

#define hnae_buf_size(_ring) ((_ring)->buf_size)
#define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring)))
#define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring))

struct hnae_handle;

/* allocate and dma map space for hnae desc */
struct hnae_buf_ops {
	int (*alloc_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
	void (*free_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
	int (*map_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
	void (*unmap_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
};

struct hnae_queue {
	void __iomem *io_base;
	phys_addr_t phy_base;
	struct hnae_ae_dev *dev;	/* the device who use this queue */
	struct hnae_ring rx_ring ____cacheline_internodealigned_in_smp;
	struct hnae_ring tx_ring ____cacheline_internodealigned_in_smp;
	struct hnae_handle *handle;
};

/*hnae loop mode*/
enum hnae_loop {
	MAC_INTERNALLOOP_MAC = 0,
	MAC_INTERNALLOOP_SERDES,
	MAC_INTERNALLOOP_PHY,
	MAC_LOOP_NONE,
};

/*hnae port type*/
enum hnae_port_type {
	HNAE_PORT_SERVICE = 0,
	HNAE_PORT_DEBUG
};

/* This struct defines the operation on the handle.
 *
 * get_handle(): (mandatory)
 *   Get a handle from AE according to its name and options.
 *   the AE driver should manage the space used by handle and its queues while
 *   the HNAE framework will allocate desc and desc_cb for all rings in the
 *   queues.
 * put_handle():
 *   Release the handle.
 * start():
 *   Enable the hardware, include all queues
 * stop():
 *   Disable the hardware
 * set_opts(): (mandatory)
 *   Set options to the AE
 * get_opts(): (mandatory)
 *   Get options from the AE
 * get_status():
 *   Get the carrier state of the back channel of the handle, 1 for ok, 0 for
 *   non-ok
 * toggle_ring_irq(): (mandatory)
 *   Set the ring irq to be enabled(0) or disable(1)
 * toggle_queue_status(): (mandatory)
 *   Set the queue to be enabled(1) or disable(0), this will not change the
 *   ring irq state
 * adjust_link()
 *   adjust link status
 * set_loopback()
 *   set loopback
 * get_ring_bdnum_limit()
 *   get ring bd number limit
 * get_pauseparam()
 *   get tx and rx of pause frame use
 * set_autoneg()
 *   set auto autonegotiation of pause frame use
 * get_autoneg()
 *   get auto autonegotiation of pause frame use
 * set_pauseparam()
 *   set tx and rx of pause frame use
 * get_coalesce_usecs()
 *   get usecs to delay a TX interrupt after a packet is sent
 * get_rx_max_coalesced_frames()
 *   get Maximum number of packets to be sent before a TX interrupt.
 * set_coalesce_usecs()
 *   set usecs to delay a TX interrupt after a packet is sent
 * set_coalesce_frames()
 *   set Maximum number of packets to be sent before a TX interrupt.
 * get_ringnum()
 *   get RX/TX ring number
 * get_max_ringnum()
 *   get RX/TX ring maximum number
 * get_mac_addr()
 *   get mac address
 * set_mac_addr()
 *   set mac address
 * set_mc_addr()
 *   set multicast mode
 * set_mtu()
 *   set mtu
 * update_stats()
 *   update Old network device statistics
 * get_ethtool_stats()
 *   get ethtool network device statistics
 * get_strings()
 *   get a set of strings that describe the requested objects
 * get_sset_count()
 *   get number of strings that @get_strings will write
 * update_led_status()
 *   update the led status
 * set_led_id()
 *   set led id
 * get_regs()
 *   get regs dump
 * get_regs_len()
 *   get the len of the regs dump
 */
struct hnae_ae_ops {
	struct hnae_handle *(*get_handle)(struct hnae_ae_dev *dev,
					  u32 port_id);
	void (*put_handle)(struct hnae_handle *handle);
	void (*init_queue)(struct hnae_queue *q);
	void (*fini_queue)(struct hnae_queue *q);
	int (*start)(struct hnae_handle *handle);
	void (*stop)(struct hnae_handle *handle);
	void (*reset)(struct hnae_handle *handle);
	int (*set_opts)(struct hnae_handle *handle, int type, void *opts);
	int (*get_opts)(struct hnae_handle *handle, int type, void **opts);
	int (*get_status)(struct hnae_handle *handle);
	int (*get_info)(struct hnae_handle *handle,
			u8 *auto_neg, u16 *speed, u8 *duplex);
	void (*toggle_ring_irq)(struct hnae_ring *ring, u32 val);
	void (*toggle_queue_status)(struct hnae_queue *queue, u32 val);
	void (*adjust_link)(struct hnae_handle *handle, int speed, int duplex);
	int (*set_loopback)(struct hnae_handle *handle,
			    enum hnae_loop loop_mode, int en);
	void (*get_ring_bdnum_limit)(struct hnae_queue *queue,
				     u32 *uplimit);
	void (*get_pauseparam)(struct hnae_handle *handle,
			       u32 *auto_neg, u32 *rx_en, u32 *tx_en);
	int (*set_autoneg)(struct hnae_handle *handle, u8 enable);
	int (*get_autoneg)(struct hnae_handle *handle);
	int (*set_pauseparam)(struct hnae_handle *handle,
			      u32 auto_neg, u32 rx_en, u32 tx_en);
	void (*get_coalesce_usecs)(struct hnae_handle *handle,
				   u32 *tx_usecs, u32 *rx_usecs);
	void (*get_rx_max_coalesced_frames)(struct hnae_handle *handle,
					    u32 *tx_frames, u32 *rx_frames);
	int (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout);
	int (*set_coalesce_frames)(struct hnae_handle *handle,
				   u32 coalesce_frames);
	void (*set_promisc_mode)(struct hnae_handle *handle, u32 en);
	int (*get_mac_addr)(struct hnae_handle *handle, void **p);
	int (*set_mac_addr)(struct hnae_handle *handle, void *p);
	int (*set_mc_addr)(struct hnae_handle *handle, void *addr);
	int (*set_mtu)(struct hnae_handle *handle, int new_mtu);
	void (*set_tso_stats)(struct hnae_handle *handle, int enable);
	void (*update_stats)(struct hnae_handle *handle,
			     struct net_device_stats *net_stats);
	void (*get_stats)(struct hnae_handle *handle, u64 *data);
	void (*get_strings)(struct hnae_handle *handle,
			    u32 stringset, u8 *data);
	int (*get_sset_count)(struct hnae_handle *handle, int stringset);
	void (*update_led_status)(struct hnae_handle *handle);
	int (*set_led_id)(struct hnae_handle *handle,
			  enum hnae_led_state status);
	void (*get_regs)(struct hnae_handle *handle, void *data);
	int (*get_regs_len)(struct hnae_handle *handle);
	u32	(*get_rss_key_size)(struct hnae_handle *handle);
	u32	(*get_rss_indir_size)(struct hnae_handle *handle);
	int	(*get_rss)(struct hnae_handle *handle, u32 *indir, u8 *key,
			   u8 *hfunc);
	int	(*set_rss)(struct hnae_handle *handle, const u32 *indir,
			   const u8 *key, const u8 hfunc);
};

struct hnae_ae_dev {
	struct device cls_dev; /* the class dev */
	struct device *dev; /* the presented dev */
	struct hnae_ae_ops *ops;
	struct list_head node;
	struct module *owner; /* the module who provides this dev */
	int id;
	char name[AE_NAME_SIZE];
	struct list_head handle_list;
	spinlock_t lock; /* lock to protect the handle_list */
};

struct hnae_handle {
	struct device *owner_dev; /* the device which make use of this handle */
	struct hnae_ae_dev *dev;  /* the device who provides this handle */
	struct phy_device *phy_dev;
	phy_interface_t phy_if;
	u32 if_support;
	int q_num;
	int vf_id;
	u32 eport_id;
	u32 dport_id;	/* v2 tx bd should fill the dport_id */
	enum hnae_port_type port_type;
	struct list_head node;    /* list to hnae_ae_dev->handle_list */
	struct hnae_buf_ops *bops; /* operation for the buffer */
	struct hnae_queue **qs;  /* array base of all queues */
};

#define ring_to_dev(ring) ((ring)->q->dev->dev)

struct hnae_handle *hnae_get_handle(struct device *owner_dev,
				    const struct fwnode_handle	*fwnode,
				    u32 port_id,
				    struct hnae_buf_ops *bops);

void hnae_put_handle(struct hnae_handle *handle);
int hnae_ae_register(struct hnae_ae_dev *dev, struct module *owner);
void hnae_ae_unregister(struct hnae_ae_dev *dev);

int hnae_register_notifier(struct notifier_block *nb);
void hnae_unregister_notifier(struct notifier_block *nb);
int hnae_reinit_handle(struct hnae_handle *handle);

#define hnae_queue_xmit(q, buf_num) writel_relaxed(buf_num, \
	(q)->tx_ring.io_base + RCB_REG_TAIL)

#ifndef assert
#define assert(cond)
#endif

static inline int hnae_reserve_buffer_map(struct hnae_ring *ring,
					  struct hnae_desc_cb *cb)
{
	struct hnae_buf_ops *bops = ring->q->handle->bops;
	int ret;

	ret = bops->alloc_buffer(ring, cb);
	if (ret)
		goto out;

	ret = bops->map_buffer(ring, cb);
	if (ret)
		goto out_with_buf;

	return 0;

out_with_buf:
	bops->free_buffer(ring, cb);
out:
	return ret;
}

static inline int hnae_alloc_buffer_attach(struct hnae_ring *ring, int i)
{
	int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]);

	if (ret)
		return ret;

	ring->desc[i].addr = (__le64)ring->desc_cb[i].dma;

	return 0;
}

static inline void hnae_buffer_detach(struct hnae_ring *ring, int i)
{
	ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]);
	ring->desc[i].addr = 0;
}

static inline void hnae_free_buffer_detach(struct hnae_ring *ring, int i)
{
	struct hnae_buf_ops *bops = ring->q->handle->bops;
	struct hnae_desc_cb *cb = &ring->desc_cb[i];

	if (!ring->desc_cb[i].dma)
		return;

	hnae_buffer_detach(ring, i);
	bops->free_buffer(ring, cb);
}

/* detach a in-used buffer and replace with a reserved one  */
static inline void hnae_replace_buffer(struct hnae_ring *ring, int i,
				       struct hnae_desc_cb *res_cb)
{
	struct hnae_buf_ops *bops = ring->q->handle->bops;

	bops->unmap_buffer(ring, &ring->desc_cb[i]);
	ring->desc_cb[i] = *res_cb;
	ring->desc[i].addr = (__le64)ring->desc_cb[i].dma;
	ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
}

static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i)
{
	ring->desc_cb[i].reuse_flag = 0;
	ring->desc[i].addr = (__le64)(ring->desc_cb[i].dma
		+ ring->desc_cb[i].page_offset);
	ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
}

#define hnae_set_field(origin, mask, shift, val) \
	do { \
		(origin) &= (~(mask)); \
		(origin) |= ((val) << (shift)) & (mask); \
	} while (0)

#define hnae_set_bit(origin, shift, val) \
	hnae_set_field((origin), (0x1 << (shift)), (shift), (val))

#define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift))

#define hnae_get_bit(origin, shift) \
	hnae_get_field((origin), (0x1 << (shift)), (shift))

#endif
Commit	Line	Data
6fe6611f	1	/*
	2	* Copyright (c) 2014-2015 Hisilicon Limited.
	3	*
	4	* This program is free software; you can redistribute it and/or modify
	5	* it under the terms of the GNU General Public License as published by
	6	* the Free Software Foundation; either version 2 of the License, or
	7	* (at your option) any later version.
	8	*/
	9
	10	#ifndef __HNAE_H
	11	#define __HNAE_H
	12
	13	/* Names used in this framework:
	14	* ae handle (handle):
	15	* a set of queues provided by AE
	16	* ring buffer queue (rbq):
	17	* the channel between upper layer and the AE, can do tx and rx
	18	* ring:
	19	* a tx or rx channel within a rbq
	20	* ring description (desc):
	21	* an element in the ring with packet information
	22	* buffer:
	23	* a memory region referred by desc with the full packet payload
	24	*
	25	* "num" means a static number set as a parameter, "count" mean a dynamic
	26	* number set while running
	27	* "cb" means control block
	28	*/
	29
652d39b0	30	#include <linux/acpi.h>
6fe6611f	31	#include <linux/delay.h>
	32	#include <linux/device.h>
	33	#include <linux/module.h>
	34	#include <linux/netdevice.h>
	35	#include <linux/notifier.h>
99dcc7df	36	#include <linux/phy.h>
6fe6611f	37	#include <linux/types.h>
6fe6611f	38
13ac695e	39	#define HNAE_DRIVER_VERSION "2.0"
6fe6611f	40	#define HNAE_DRIVER_NAME "hns"
	41	#define HNAE_COPYRIGHT "Copyright(c) 2015 Huawei Corporation."
	42	#define HNAE_DRIVER_STRING "Hisilicon Network Subsystem Driver"
	43	#define HNAE_DEFAULT_DEVICE_DESCR "Hisilicon Network Subsystem"
	44
	45	#ifdef DEBUG
	46
	47	#ifndef assert
	48	#define assert(expr) \
	49	do { \
	50	if (!(expr)) { \
	51	pr_err("Assertion failed! %s, %s, %s, line %d\n", \
	52	#expr, __FILE__, __func__, __LINE__); \
	53	} \
	54	} while (0)
	55	#endif
	56
	57	#else
	58
	59	#ifndef assert
	60	#define assert(expr)
	61	#endif
	62
	63	#endif
	64
	65	#define AE_VERSION_1 ('6' << 16 \| '6' << 8 \| '0')
	66	#define AE_VERSION_2 ('1' << 24 \| '6' << 16 \| '1' << 8 \| '0')
13ac695e	67	#define AE_IS_VER1(ver) ((ver) == AE_VERSION_1)
6fe6611f	68	#define AE_NAME_SIZE 16
	69
	70	/* some said the RX and TX RCB format should not be the same in the future. But
	71	* it is the same now...
	72	*/
	73	#define RCB_REG_BASEADDR_L 0x00 /* P660 support only 32bit accessing */
	74	#define RCB_REG_BASEADDR_H 0x04
	75	#define RCB_REG_BD_NUM 0x08
	76	#define RCB_REG_BD_LEN 0x0C
	77	#define RCB_REG_PKTLINE 0x10
	78	#define RCB_REG_TAIL 0x18
	79	#define RCB_REG_HEAD 0x1C
	80	#define RCB_REG_FBDNUM 0x20
	81	#define RCB_REG_OFFSET 0x24 /* pkt num to be handled */
	82	#define RCB_REG_PKTNUM_RECORD 0x2C /* total pkt received */
	83
	84	#define HNS_RX_HEAD_SIZE 256
	85
	86	#define HNAE_AE_REGISTER 0x1
	87
	88	#define RCB_RING_NAME_LEN 16
	89
	90	enum hnae_led_state {
	91	HNAE_LED_INACTIVE,
	92	HNAE_LED_ACTIVE,
	93	HNAE_LED_ON,
	94	HNAE_LED_OFF
	95	};
	96
	97	#define HNS_RX_FLAG_VLAN_PRESENT 0x1
	98	#define HNS_RX_FLAG_L3ID_IPV4 0x0
	99	#define HNS_RX_FLAG_L3ID_IPV6 0x1
	100	#define HNS_RX_FLAG_L4ID_UDP 0x0
	101	#define HNS_RX_FLAG_L4ID_TCP 0x1
	102
	103	#define HNS_TXD_ASID_S 0
	104	#define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S)
	105	#define HNS_TXD_BUFNUM_S 8
	106	#define HNS_TXD_BUFNUM_M (0x3 << HNS_TXD_BUFNUM_S)
	107	#define HNS_TXD_PORTID_S 10
	108	#define HNS_TXD_PORTID_M (0x7 << HNS_TXD_PORTID_S)
	109
	110	#define HNS_TXD_RA_B 8
	111	#define HNS_TXD_RI_B 9
	112	#define HNS_TXD_L4CS_B 10
	113	#define HNS_TXD_L3CS_B 11
	114	#define HNS_TXD_FE_B 12
	115	#define HNS_TXD_VLD_B 13
	116	#define HNS_TXD_IPOFFSET_S 14
	117	#define HNS_TXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S)
	118
	119	#define HNS_RXD_IPOFFSET_S 0
	120	#define HNS_RXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S)
	121	#define HNS_RXD_BUFNUM_S 8
	122	#define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S)
	123	#define HNS_RXD_PORTID_S 10
	124	#define HNS_RXD_PORTID_M (0x7 << HNS_RXD_PORTID_S)
	125	#define HNS_RXD_DMAC_S 13
	126	#define HNS_RXD_DMAC_M (0x3 << HNS_RXD_DMAC_S)
	127	#define HNS_RXD_VLAN_S 15
	128	#define HNS_RXD_VLAN_M (0x3 << HNS_RXD_VLAN_S)
	129	#define HNS_RXD_L3ID_S 17
	130	#define HNS_RXD_L3ID_M (0xf << HNS_RXD_L3ID_S)
	131	#define HNS_RXD_L4ID_S 21
132	#define HNS_RXD_L4ID_M (0xf << HNS_RXD_L4ID_S)
133	#define HNS_RXD_FE_B 25
134	#define HNS_RXD_FRAG_B 26
135	#define HNS_RXD_VLD_B 27
136	#define HNS_RXD_L2E_B 28
137	#define HNS_RXD_L3E_B 29
138	#define HNS_RXD_L4E_B 30
139	#define HNS_RXD_DROP_B 31
140
141	#define HNS_RXD_VLANID_S 8
142	#define HNS_RXD_VLANID_M (0xfff << HNS_RXD_VLANID_S)
143	#define HNS_RXD_CFI_B 20
144	#define HNS_RXD_PRI_S 21
145	#define HNS_RXD_PRI_M (0x7 << HNS_RXD_PRI_S)
146	#define HNS_RXD_ASID_S 24
147	#define HNS_RXD_ASID_M (0xff << HNS_RXD_ASID_S)
148
13ac695e S	149	#define HNSV2_TXD_BUFNUM_S 0
13ac695e S	150	#define HNSV2_TXD_BUFNUM_M (0x7 << HNSV2_TXD_BUFNUM_S)
f8a1a636 SL	151	#define HNSV2_TXD_PORTID_S 4
f8a1a636 SL	152	#define HNSV2_TXD_PORTID_M (0X7 << HNSV2_TXD_PORTID_S)
13ac695e S	153	#define HNSV2_TXD_RI_B 1
	154	#define HNSV2_TXD_L4CS_B 2
	155	#define HNSV2_TXD_L3CS_B 3
	156	#define HNSV2_TXD_FE_B 4
	157	#define HNSV2_TXD_VLD_B 5
	158
	159	#define HNSV2_TXD_TSE_B 0
	160	#define HNSV2_TXD_VLAN_EN_B 1
	161	#define HNSV2_TXD_SNAP_B 2
	162	#define HNSV2_TXD_IPV6_B 3
	163	#define HNSV2_TXD_SCTP_B 4
	164
6fe6611f	165	/* hardware spec ring buffer format */
	166	struct __packed hnae_desc {
	167	__le64 addr;
	168	union {
	169	struct {
13ac695e S	170	union {
	171	__le16 asid_bufnum_pid;
	172	__le16 asid;
	173	};
6fe6611f	174	__le16 send_size;
13ac695e S	175	union {
	176	__le32 flag_ipoffset;
	177	struct {
	178	__u8 bn_pid;
	179	__u8 ra_ri_cs_fe_vld;
	180	__u8 ip_offset;
	181	__u8 tse_vlan_snap_v6_sctp_nth;
	182	};
	183	};
	184	__le16 mss;
	185	__u8 l4_len;
	186	__u8 reserved1;
	187	__le16 paylen;
	188	__u8 vmid;
	189	__u8 qid;
	190	__le32 reserved2[2];
6fe6611f	191	} tx;
	192
	193	struct {
	194	__le32 ipoff_bnum_pid_flag;
	195	__le16 pkt_len;
	196	__le16 size;
13ac695e S	197	union {
	198	__le32 vlan_pri_asid;
	199	struct {
	200	__le16 asid;
	201	__le16 vlan_cfi_pri;
	202	};
	203	};
	204	__le32 rss_hash;
	205	__le32 reserved_1[2];
6fe6611f	206	} rx;
	207	};
	208	};
	209
	210	struct hnae_desc_cb {
	211	dma_addr_t dma; /* dma address of this desc */
	212	void buf; / cpu addr for a desc */
	213
	214	/* priv data for the desc, e.g. skb when use with ip stack*/
	215	void *priv;
	216	u16 page_offset;
	217	u16 reuse_flag;
	218
	219	u16 length; /* length of the buffer */
	220
	221	/* desc type, used by the ring user to mark the type of the priv data */
	222	u16 type;
	223	};
	224
	225	#define setflags(flags, bits) ((flags) \|= (bits))
	226	#define unsetflags(flags, bits) ((flags) &= ~(bits))
	227
	228	/* hnae_ring->flags fields */
	229	#define RINGF_DIR 0x1 /* TX or RX ring, set if TX */
	230	#define is_tx_ring(ring) ((ring)->flags & RINGF_DIR)
	231	#define is_rx_ring(ring) (!is_tx_ring(ring))
	232	#define ring_to_dma_dir(ring) (is_tx_ring(ring) ? \
	233	DMA_TO_DEVICE : DMA_FROM_DEVICE)
	234
	235	struct ring_stats {
	236	u64 io_err_cnt;
	237	u64 sw_err_cnt;
	238	u64 seg_pkt_cnt;
	239	union {
	240	struct {
	241	u64 tx_pkts;
	242	u64 tx_bytes;
	243	u64 tx_err_cnt;
	244	u64 restart_queue;
	245	u64 tx_busy;
	246	};
	247	struct {
	248	u64 rx_pkts;
	249	u64 rx_bytes;
	250	u64 rx_err_cnt;
	251	u64 reuse_pg_cnt;
	252	u64 err_pkt_len;
	253	u64 non_vld_descs;
	254	u64 err_bd_num;
	255	u64 l2_err;
	256	u64 l3l4_csum_err;
	257	};
	258	};
	259	};
	260
	261	struct hnae_queue;
	262
	263	struct hnae_ring {
	264	u8 __iomem io_base; / base io address for the ring */
	265	struct hnae_desc desc; / dma map address space */
	266	struct hnae_desc_cb *desc_cb;
	267	struct hnae_queue *q;
	268	int irq;
	269	char ring_name[RCB_RING_NAME_LEN];
270
271	/* statistic */
272	struct ring_stats stats;
273
274	dma_addr_t desc_dma_addr;
275	u32 buf_size; /* size for hnae_desc->addr, preset by AE */
276	u16 desc_num; /* total number of desc */
277	u16 max_desc_num_per_pkt;
278	u16 max_raw_data_sz_per_desc;
279	u16 max_pkt_size;
280	int next_to_use; /* idx of next spare desc */
281
282	/* idx of lastest sent desc, the ring is empty when equal to
283	* next_to_use
284	*/
285	int next_to_clean;
286
287	int flags; /* ring attribute */
288	int irq_init_flag;
289	};
290
291	#define ring_ptr_move_fw(ring, p) \
292	((ring)->p = ((ring)->p + 1) % (ring)->desc_num)
293	#define ring_ptr_move_bw(ring, p) \
294	((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num)
295
296	enum hns_desc_type {
297	DESC_TYPE_SKB,
298	DESC_TYPE_PAGE,
299	};
300
301	#define assert_is_ring_idx(ring, idx) \
302	assert((idx) >= 0 && (idx) < (ring)->desc_num)
303
304	/* the distance between [begin, end) in a ring buffer
305	* note: there is a unuse slot between the begin and the end
306	*/
307	static inline int ring_dist(struct hnae_ring *ring, int begin, int end)
308	{
309	assert_is_ring_idx(ring, begin);
310	assert_is_ring_idx(ring, end);
311
312	return (end - begin + ring->desc_num) % ring->desc_num;
313	}
314
315	static inline int ring_space(struct hnae_ring *ring)
316	{
317	return ring->desc_num -
318	ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;
319	}
320
321	static inline int is_ring_empty(struct hnae_ring *ring)
322	{
323	assert_is_ring_idx(ring, ring->next_to_use);
324	assert_is_ring_idx(ring, ring->next_to_clean);
325
326	return ring->next_to_use == ring->next_to_clean;
327	}
328
329	#define hnae_buf_size(_ring) ((_ring)->buf_size)
330	#define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring)))
331	#define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring))
332
333	struct hnae_handle;
334
335	/* allocate and dma map space for hnae desc */
336	struct hnae_buf_ops {
337	int (alloc_buffer)(struct hnae_ring ring, struct hnae_desc_cb *cb);
338	void (free_buffer)(struct hnae_ring ring, struct hnae_desc_cb *cb);
339	int (map_buffer)(struct hnae_ring ring, struct hnae_desc_cb *cb);
340	void (unmap_buffer)(struct hnae_ring ring, struct hnae_desc_cb *cb);
341	};
342
343	struct hnae_queue {
344	void __iomem *io_base;
345	phys_addr_t phy_base;
346	struct hnae_ae_dev dev; / the device who use this queue */
9cbe9fd5	347	struct hnae_ring rx_ring ____cacheline_internodealigned_in_smp;
9cbe9fd5	348	struct hnae_ring tx_ring ____cacheline_internodealigned_in_smp;
6fe6611f	349	struct hnae_handle *handle;
	350	};
	351
	352	/hnae loop mode/
	353	enum hnae_loop {
	354	MAC_INTERNALLOOP_MAC = 0,
	355	MAC_INTERNALLOOP_SERDES,
	356	MAC_INTERNALLOOP_PHY,
	357	MAC_LOOP_NONE,
	358	};
	359
	360	/hnae port type/
	361	enum hnae_port_type {
	362	HNAE_PORT_SERVICE = 0,
	363	HNAE_PORT_DEBUG
	364	};
	365
	366	/* This struct defines the operation on the handle.
	367	*
	368	* get_handle(): (mandatory)
	369	* Get a handle from AE according to its name and options.
	370	* the AE driver should manage the space used by handle and its queues while
	371	* the HNAE framework will allocate desc and desc_cb for all rings in the
	372	* queues.
	373	* put_handle():
	374	* Release the handle.
	375	* start():
	376	* Enable the hardware, include all queues
	377	* stop():
	378	* Disable the hardware
	379	* set_opts(): (mandatory)
	380	* Set options to the AE
	381	* get_opts(): (mandatory)
	382	* Get options from the AE
	383	* get_status():
	384	* Get the carrier state of the back channel of the handle, 1 for ok, 0 for
	385	* non-ok
	386	* toggle_ring_irq(): (mandatory)
	387	* Set the ring irq to be enabled(0) or disable(1)
	388	* toggle_queue_status(): (mandatory)
	389	* Set the queue to be enabled(1) or disable(0), this will not change the
	390	* ring irq state
	391	* adjust_link()
	392	* adjust link status
	393	* set_loopback()
	394	* set loopback
	395	* get_ring_bdnum_limit()
	396	* get ring bd number limit
	397	* get_pauseparam()
	398	* get tx and rx of pause frame use
	399	* set_autoneg()
	400	* set auto autonegotiation of pause frame use
	401	* get_autoneg()
	402	* get auto autonegotiation of pause frame use
	403	* set_pauseparam()
	404	* set tx and rx of pause frame use
	405	* get_coalesce_usecs()
	406	* get usecs to delay a TX interrupt after a packet is sent
	407	* get_rx_max_coalesced_frames()
	408	* get Maximum number of packets to be sent before a TX interrupt.
	409	* set_coalesce_usecs()
	410	* set usecs to delay a TX interrupt after a packet is sent
	411	* set_coalesce_frames()
	412	* set Maximum number of packets to be sent before a TX interrupt.
413	* get_ringnum()
414	* get RX/TX ring number
415	* get_max_ringnum()
416	* get RX/TX ring maximum number
417	* get_mac_addr()
418	* get mac address
419	* set_mac_addr()
420	* set mac address
421	* set_mc_addr()
422	* set multicast mode
423	* set_mtu()
424	* set mtu
425	* update_stats()
426	* update Old network device statistics
427	* get_ethtool_stats()
428	* get ethtool network device statistics
429	* get_strings()
430	* get a set of strings that describe the requested objects
431	* get_sset_count()
432	* get number of strings that @get_strings will write
433	* update_led_status()
434	* update the led status
435	* set_led_id()
436	* set led id
437	* get_regs()
438	* get regs dump
439	* get_regs_len()
440	* get the len of the regs dump
441	*/
442	struct hnae_ae_ops {
443	struct hnae_handle (get_handle)(struct hnae_ae_dev *dev,
444	u32 port_id);
445	void (put_handle)(struct hnae_handle handle);
446	void (init_queue)(struct hnae_queue q);
447	void (fini_queue)(struct hnae_queue q);
448	int (start)(struct hnae_handle handle);
449	void (stop)(struct hnae_handle handle);
450	void (reset)(struct hnae_handle handle);
451	int (set_opts)(struct hnae_handle handle, int type, void *opts);
452	int (get_opts)(struct hnae_handle handle, int type, void **opts);
453	int (get_status)(struct hnae_handle handle);
454	int (get_info)(struct hnae_handle handle,
455	u8 auto_neg, u16 speed, u8 *duplex);
456	void (toggle_ring_irq)(struct hnae_ring ring, u32 val);
457	void (toggle_queue_status)(struct hnae_queue queue, u32 val);
458	void (adjust_link)(struct hnae_handle handle, int speed, int duplex);
459	int (set_loopback)(struct hnae_handle handle,
460	enum hnae_loop loop_mode, int en);
461	void (get_ring_bdnum_limit)(struct hnae_queue queue,
462	u32 *uplimit);
463	void (get_pauseparam)(struct hnae_handle handle,
464	u32 auto_neg, u32 rx_en, u32 *tx_en);
465	int (set_autoneg)(struct hnae_handle handle, u8 enable);
466	int (get_autoneg)(struct hnae_handle handle);
467	int (set_pauseparam)(struct hnae_handle handle,
468	u32 auto_neg, u32 rx_en, u32 tx_en);
469	void (get_coalesce_usecs)(struct hnae_handle handle,
470	u32 tx_usecs, u32 rx_usecs);
471	void (get_rx_max_coalesced_frames)(struct hnae_handle handle,
472	u32 tx_frames, u32 rx_frames);
9832ce4c	473	int (set_coalesce_usecs)(struct hnae_handle handle, u32 timeout);
6fe6611f	474	int (set_coalesce_frames)(struct hnae_handle handle,
6fe6611f	475	u32 coalesce_frames);
4568637f	476	void (set_promisc_mode)(struct hnae_handle handle, u32 en);
6fe6611f	477	int (get_mac_addr)(struct hnae_handle handle, void **p);
	478	int (set_mac_addr)(struct hnae_handle handle, void *p);
	479	int (set_mc_addr)(struct hnae_handle handle, void *addr);
	480	int (set_mtu)(struct hnae_handle handle, int new_mtu);
64353af6	481	void (set_tso_stats)(struct hnae_handle handle, int enable);
6fe6611f	482	void (update_stats)(struct hnae_handle handle,
	483	struct net_device_stats *net_stats);
	484	void (get_stats)(struct hnae_handle handle, u64 *data);
	485	void (get_strings)(struct hnae_handle handle,
	486	u32 stringset, u8 *data);
	487	int (get_sset_count)(struct hnae_handle handle, int stringset);
	488	void (update_led_status)(struct hnae_handle handle);
	489	int (set_led_id)(struct hnae_handle handle,
	490	enum hnae_led_state status);
	491	void (get_regs)(struct hnae_handle handle, void *data);
	492	int (get_regs_len)(struct hnae_handle handle);
6bc0ce7d S	493	u32 (get_rss_key_size)(struct hnae_handle handle);
	494	u32 (get_rss_indir_size)(struct hnae_handle handle);
	495	int (get_rss)(struct hnae_handle handle, u32 indir, u8 key,
	496	u8 *hfunc);
	497	int (set_rss)(struct hnae_handle handle, const u32 *indir,
	498	const u8 *key, const u8 hfunc);
6fe6611f	499	};
	500
	501	struct hnae_ae_dev {
	502	struct device cls_dev; /* the class dev */
	503	struct device dev; / the presented dev */
	504	struct hnae_ae_ops *ops;
	505	struct list_head node;
	506	struct module owner; / the module who provides this dev */
	507	int id;
	508	char name[AE_NAME_SIZE];
	509	struct list_head handle_list;
	510	spinlock_t lock; /* lock to protect the handle_list */
	511	};
	512
	513	struct hnae_handle {
	514	struct device owner_dev; / the device which make use of this handle */
	515	struct hnae_ae_dev dev; / the device who provides this handle */
652d39b0	516	struct phy_device *phy_dev;
6fe6611f	517	phy_interface_t phy_if;
	518	u32 if_support;
	519	int q_num;
	520	int vf_id;
	521	u32 eport_id;
f8a1a636	522	u32 dport_id; /* v2 tx bd should fill the dport_id */
6fe6611f	523	enum hnae_port_type port_type;
	524	struct list_head node; /* list to hnae_ae_dev->handle_list */
	525	struct hnae_buf_ops bops; / operation for the buffer */
	526	struct hnae_queue *qs; / array base of all queues */
	527	};
	528
	529	#define ring_to_dev(ring) ((ring)->q->dev->dev)
	530
48189d6a	531	struct hnae_handle hnae_get_handle(struct device owner_dev,
7b2acae6	532	const struct fwnode_handle *fwnode,
48189d6a	533	u32 port_id,
	534	struct hnae_buf_ops *bops);
	535
6fe6611f	536	void hnae_put_handle(struct hnae_handle *handle);
	537	int hnae_ae_register(struct hnae_ae_dev dev, struct module owner);
	538	void hnae_ae_unregister(struct hnae_ae_dev *dev);
	539
	540	int hnae_register_notifier(struct notifier_block *nb);
	541	void hnae_unregister_notifier(struct notifier_block *nb);
	542	int hnae_reinit_handle(struct hnae_handle *handle);
	543
	544	#define hnae_queue_xmit(q, buf_num) writel_relaxed(buf_num, \
	545	(q)->tx_ring.io_base + RCB_REG_TAIL)
	546
	547	#ifndef assert
	548	#define assert(cond)
	549	#endif
	550
	551	static inline int hnae_reserve_buffer_map(struct hnae_ring *ring,
	552	struct hnae_desc_cb *cb)
	553	{
	554	struct hnae_buf_ops *bops = ring->q->handle->bops;
	555	int ret;
	556
	557	ret = bops->alloc_buffer(ring, cb);
	558	if (ret)
	559	goto out;
	560
	561	ret = bops->map_buffer(ring, cb);
	562	if (ret)
	563	goto out_with_buf;
	564
	565	return 0;
	566
	567	out_with_buf:
	568	bops->free_buffer(ring, cb);
	569	out:
	570	return ret;
	571	}
	572
	573	static inline int hnae_alloc_buffer_attach(struct hnae_ring *ring, int i)
	574	{
	575	int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]);
	576
	577	if (ret)
	578	return ret;
	579
	580	ring->desc[i].addr = (__le64)ring->desc_cb[i].dma;
	581
	582	return 0;
	583	}
	584
	585	static inline void hnae_buffer_detach(struct hnae_ring *ring, int i)
	586	{
	587	ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]);
	588	ring->desc[i].addr = 0;
	589	}
	590
	591	static inline void hnae_free_buffer_detach(struct hnae_ring *ring, int i)
	592	{
	593	struct hnae_buf_ops *bops = ring->q->handle->bops;
	594	struct hnae_desc_cb *cb = &ring->desc_cb[i];
	595
	596	if (!ring->desc_cb[i].dma)
	597	return;
	598
	599	hnae_buffer_detach(ring, i);
600	bops->free_buffer(ring, cb);
601	}
602
603	/* detach a in-used buffer and replace with a reserved one */
604	static inline void hnae_replace_buffer(struct hnae_ring *ring, int i,
605	struct hnae_desc_cb *res_cb)
606	{
607	struct hnae_buf_ops *bops = ring->q->handle->bops;
6fe6611f	608
	609	bops->unmap_buffer(ring, &ring->desc_cb[i]);
	610	ring->desc_cb[i] = *res_cb;
6fe6611f	611	ring->desc[i].addr = (__le64)ring->desc_cb[i].dma;
	612	ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
	613	}
	614
	615	static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i)
	616	{
	617	ring->desc_cb[i].reuse_flag = 0;
	618	ring->desc[i].addr = (__le64)(ring->desc_cb[i].dma
	619	+ ring->desc_cb[i].page_offset);
	620	ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
	621	}
	622
	623	#define hnae_set_field(origin, mask, shift, val) \
	624	do { \
	625	(origin) &= (~(mask)); \
	626	(origin) \|= ((val) << (shift)) & (mask); \
	627	} while (0)
	628
	629	#define hnae_set_bit(origin, shift, val) \
	630	hnae_set_field((origin), (0x1 << (shift)), (shift), (val))
	631
	632	#define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift))
	633
	634	#define hnae_get_bit(origin, shift) \
	635	hnae_get_field((origin), (0x1 << (shift)), (shift))
	636
	637	#endif