drivers/net/ethernet/hisilicon/hns/hnae.h

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