OSCL-LXR linux-6.0.1/​drivers/​net/​ethernet/​hisilicon/​hns/​hnae.h	Source navigation Diff markup Identifier search General search
	Version: linux-6.0.1 spark-3.0.0 hadoop-3.2.0-src hadoop-3.3.0-src spark-2.4.7 linux-4.15.13 hadoop-2.7.4-src Revert   Change

 /* SPDX-License-Identifier: GPL-2.0-or-later */
 /*
  * Copyright (c) 2014-2015 Hisilicon Limited.
  */
 
 #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
 
 #define BD_SIZE_2048_MAX_MTU   6000
 
 /* 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 (IFNAMSIZ + 4)
 
 #define HNAE_LOWEST_LATENCY_COAL_PARAM  30
 #define HNAE_LOW_LATENCY_COAL_PARAM 80
 #define HNAE_BULK_LATENCY_COAL_PARAM    150
 
 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_RX_FLAG_L4ID_SCTP 0x3
 
 #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;
     u32 page_offset;
     u32 length;     /* length of the buffer */
 
     u16 reuse_flag;
 
        /* 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;
 
     /* total rx bytes after last rx rate calucated */
     u64 coal_last_rx_bytes;
     unsigned long coal_last_jiffies;
     u32 coal_param;
     u32 coal_rx_rate;   /* rx rate in MB */
 };
 
 #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 {
     u8 __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_PHY_NONE,
     MAC_LOOP_NONE,
 };
 
 /*hnae port type*/
 enum hnae_port_type {
     HNAE_PORT_SERVICE = 0,
     HNAE_PORT_DEBUG
 };
 
 /* mac media type */
 enum hnae_media_type {
     HNAE_MEDIA_TYPE_UNKNOWN = 0,
     HNAE_MEDIA_TYPE_FIBER,
     HNAE_MEDIA_TYPE_COPPER,
     HNAE_MEDIA_TYPE_BACKPLANE,
 };
 
 /* 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_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
  * clr_mc_addr()
  *   clear mcast tcam table
  * set_mc_addr()
  *   set multicast mode
  * add_uc_addr()
  *   add ucast address
  * rm_uc_addr()
  *   remove ucast address
  * 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 (*adjust_link)(struct hnae_handle *handle, int speed, int duplex);
     bool (*need_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_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_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 tx_frames, u32 rx_frames);
     void (*get_coalesce_range)(struct hnae_handle *handle,
                    u32 *tx_frames_low, u32 *rx_frames_low,
                    u32 *tx_frames_high, u32 *rx_frames_high,
                    u32 *tx_usecs_low, u32 *rx_usecs_low,
                    u32 *tx_usecs_high, u32 *rx_usecs_high);
     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, const void *p);
     int (*add_uc_addr)(struct hnae_handle *handle,
                const unsigned char *addr);
     int (*rm_uc_addr)(struct hnae_handle *handle,
               const unsigned char *addr);
     int (*clr_mc_addr)(struct hnae_handle *handle);
     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;
     unsigned long coal_last_jiffies;
     u32 coal_param;     /* self adapt coalesce param */
     /* the ring index of last ring that set coal param */
     u32 coal_ring_idx;
     u32 eport_id;
     u32 dport_id;   /* v2 tx bd should fill the dport_id */
     bool coal_adapt_en;
     enum hnae_port_type port_type;
     enum hnae_media_type media_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[];  /* flexible array 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 = cpu_to_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 = cpu_to_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 = cpu_to_le64(ring->desc_cb[i].dma
         + ring->desc_cb[i].page_offset);
     ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
 }
 
 /* when reinit buffer size, we should reinit buffer description */
 static inline void hnae_reinit_all_ring_desc(struct hnae_handle *h)
 {
     int i, j;
     struct hnae_ring *ring;
 
     for (i = 0; i < h->q_num; i++) {
         ring = &h->qs[i]->rx_ring;
         for (j = 0; j < ring->desc_num; j++)
             ring->desc[j].addr = cpu_to_le64(ring->desc_cb[j].dma);
     }
 
     wmb();  /* commit all data before submit */
 }
 
 /* when reinit buffer size, we should reinit page offset */
 static inline void hnae_reinit_all_ring_page_off(struct hnae_handle *h)
 {
     int i, j;
     struct hnae_ring *ring;
 
     for (i = 0; i < h->q_num; i++) {
         ring = &h->qs[i]->rx_ring;
         for (j = 0; j < ring->desc_num; j++) {
             ring->desc_cb[j].page_offset = 0;
             if (ring->desc[j].addr !=
                 cpu_to_le64(ring->desc_cb[j].dma))
                 ring->desc[j].addr =
                     cpu_to_le64(ring->desc_cb[j].dma);
         }
     }
 
     wmb();  /* commit all data before submit */
 }
 
 #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

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