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

/* [<][>][^][v][top][bottom][index][help] */
This source file includes following definitions.
ring_dist
ring_space
is_ring_empty
hnae_reserve_buffer_map
hnae_alloc_buffer_attach
hnae_buffer_detach
hnae_free_buffer_detach
hnae_replace_buffer
hnae_reuse_buffer
hnae_reinit_all_ring_desc
hnae_reinit_all_ring_page_off
   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  * Copyright (c) 2014-2015 Hisilicon Limited.
   4  */
   5 
   6 #ifndef __HNAE_H
   7 #define __HNAE_H
   8 
   9 /* Names used in this framework:
  10  *      ae handle (handle):
  11  *        a set of queues provided by AE
  12  *      ring buffer queue (rbq):
  13  *        the channel between upper layer and the AE, can do tx and rx
  14  *      ring:
  15  *        a tx or rx channel within a rbq
  16  *      ring description (desc):
  17  *        an element in the ring with packet information
  18  *      buffer:
  19  *        a memory region referred by desc with the full packet payload
  20  *
  21  * "num" means a static number set as a parameter, "count" mean a dynamic
  22  *   number set while running
  23  * "cb" means control block
  24  */
  25 
  26 #include <linux/acpi.h>
  27 #include <linux/delay.h>
  28 #include <linux/device.h>
  29 #include <linux/module.h>
  30 #include <linux/netdevice.h>
  31 #include <linux/notifier.h>
  32 #include <linux/phy.h>
  33 #include <linux/types.h>
  34 
  35 #define HNAE_DRIVER_VERSION "2.0"
  36 #define HNAE_DRIVER_NAME "hns"
  37 #define HNAE_COPYRIGHT "Copyright(c) 2015 Huawei Corporation."
  38 #define HNAE_DRIVER_STRING "Hisilicon Network Subsystem Driver"
  39 #define HNAE_DEFAULT_DEVICE_DESCR "Hisilicon Network Subsystem"
  40 
  41 #ifdef DEBUG
  42 
  43 #ifndef assert
  44 #define assert(expr) \
  45 do { \
  46         if (!(expr)) { \
  47                 pr_err("Assertion failed! %s, %s, %s, line %d\n", \
  48                            #expr, __FILE__, __func__, __LINE__); \
  49         } \
  50 } while (0)
  51 #endif
  52 
  53 #else
  54 
  55 #ifndef assert
  56 #define assert(expr)
  57 #endif
  58 
  59 #endif
  60 
  61 #define AE_VERSION_1 ('6' << 16 | '6' << 8 | '0')
  62 #define AE_VERSION_2 ('1' << 24 | '6' << 16 | '1' << 8 | '0')
  63 #define AE_IS_VER1(ver) ((ver) == AE_VERSION_1)
  64 #define AE_NAME_SIZE 16
  65 
  66 #define BD_SIZE_2048_MAX_MTU   6000
  67 
  68 /* some said the RX and TX RCB format should not be the same in the future. But
  69  * it is the same now...
  70  */
  71 #define RCB_REG_BASEADDR_L         0x00 /* P660 support only 32bit accessing */
  72 #define RCB_REG_BASEADDR_H         0x04
  73 #define RCB_REG_BD_NUM             0x08
  74 #define RCB_REG_BD_LEN             0x0C
  75 #define RCB_REG_PKTLINE            0x10
  76 #define RCB_REG_TAIL               0x18
  77 #define RCB_REG_HEAD               0x1C
  78 #define RCB_REG_FBDNUM             0x20
  79 #define RCB_REG_OFFSET             0x24 /* pkt num to be handled */
  80 #define RCB_REG_PKTNUM_RECORD      0x2C /* total pkt received */
  81 
  82 #define HNS_RX_HEAD_SIZE 256
  83 
  84 #define HNAE_AE_REGISTER 0x1
  85 
  86 #define RCB_RING_NAME_LEN (IFNAMSIZ + 4)
  87 
  88 #define HNAE_LOWEST_LATENCY_COAL_PARAM  30
  89 #define HNAE_LOW_LATENCY_COAL_PARAM     80
  90 #define HNAE_BULK_LATENCY_COAL_PARAM    150
  91 
  92 enum hnae_led_state {
  93         HNAE_LED_INACTIVE,
  94         HNAE_LED_ACTIVE,
  95         HNAE_LED_ON,
  96         HNAE_LED_OFF
  97 };
  98 
  99 #define HNS_RX_FLAG_VLAN_PRESENT 0x1
 100 #define HNS_RX_FLAG_L3ID_IPV4 0x0
 101 #define HNS_RX_FLAG_L3ID_IPV6 0x1
 102 #define HNS_RX_FLAG_L4ID_UDP 0x0
 103 #define HNS_RX_FLAG_L4ID_TCP 0x1
 104 #define HNS_RX_FLAG_L4ID_SCTP 0x3
 105 
 106 #define HNS_TXD_ASID_S 0
 107 #define HNS_TXD_ASID_M (0xff << HNS_TXD_ASID_S)
 108 #define HNS_TXD_BUFNUM_S 8
 109 #define HNS_TXD_BUFNUM_M (0x3 << HNS_TXD_BUFNUM_S)
 110 #define HNS_TXD_PORTID_S 10
 111 #define HNS_TXD_PORTID_M (0x7 << HNS_TXD_PORTID_S)
 112 
 113 #define HNS_TXD_RA_B 8
 114 #define HNS_TXD_RI_B 9
 115 #define HNS_TXD_L4CS_B 10
 116 #define HNS_TXD_L3CS_B 11
 117 #define HNS_TXD_FE_B 12
 118 #define HNS_TXD_VLD_B 13
 119 #define HNS_TXD_IPOFFSET_S 14
 120 #define HNS_TXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S)
 121 
 122 #define HNS_RXD_IPOFFSET_S 0
 123 #define HNS_RXD_IPOFFSET_M (0xff << HNS_TXD_IPOFFSET_S)
 124 #define HNS_RXD_BUFNUM_S 8
 125 #define HNS_RXD_BUFNUM_M (0x3 << HNS_RXD_BUFNUM_S)
 126 #define HNS_RXD_PORTID_S 10
 127 #define HNS_RXD_PORTID_M (0x7 << HNS_RXD_PORTID_S)
 128 #define HNS_RXD_DMAC_S 13
 129 #define HNS_RXD_DMAC_M (0x3 << HNS_RXD_DMAC_S)
 130 #define HNS_RXD_VLAN_S 15
 131 #define HNS_RXD_VLAN_M (0x3 << HNS_RXD_VLAN_S)
 132 #define HNS_RXD_L3ID_S 17
 133 #define HNS_RXD_L3ID_M (0xf << HNS_RXD_L3ID_S)
 134 #define HNS_RXD_L4ID_S 21
 135 #define HNS_RXD_L4ID_M (0xf << HNS_RXD_L4ID_S)
 136 #define HNS_RXD_FE_B 25
 137 #define HNS_RXD_FRAG_B 26
 138 #define HNS_RXD_VLD_B 27
 139 #define HNS_RXD_L2E_B 28
 140 #define HNS_RXD_L3E_B 29
 141 #define HNS_RXD_L4E_B 30
 142 #define HNS_RXD_DROP_B 31
 143 
 144 #define HNS_RXD_VLANID_S 8
 145 #define HNS_RXD_VLANID_M (0xfff << HNS_RXD_VLANID_S)
 146 #define HNS_RXD_CFI_B 20
 147 #define HNS_RXD_PRI_S 21
 148 #define HNS_RXD_PRI_M (0x7 << HNS_RXD_PRI_S)
 149 #define HNS_RXD_ASID_S 24
 150 #define HNS_RXD_ASID_M (0xff << HNS_RXD_ASID_S)
 151 
 152 #define HNSV2_TXD_BUFNUM_S 0
 153 #define HNSV2_TXD_BUFNUM_M (0x7 << HNSV2_TXD_BUFNUM_S)
 154 #define HNSV2_TXD_PORTID_S      4
 155 #define HNSV2_TXD_PORTID_M      (0X7 << HNSV2_TXD_PORTID_S)
 156 #define HNSV2_TXD_RI_B   1
 157 #define HNSV2_TXD_L4CS_B   2
 158 #define HNSV2_TXD_L3CS_B   3
 159 #define HNSV2_TXD_FE_B   4
 160 #define HNSV2_TXD_VLD_B  5
 161 
 162 #define HNSV2_TXD_TSE_B   0
 163 #define HNSV2_TXD_VLAN_EN_B   1
 164 #define HNSV2_TXD_SNAP_B   2
 165 #define HNSV2_TXD_IPV6_B   3
 166 #define HNSV2_TXD_SCTP_B   4
 167 
 168 /* hardware spec ring buffer format */
 169 struct __packed hnae_desc {
 170         __le64 addr;
 171         union {
 172                 struct {
 173                         union {
 174                                 __le16 asid_bufnum_pid;
 175                                 __le16 asid;
 176                         };
 177                         __le16 send_size;
 178                         union {
 179                                 __le32 flag_ipoffset;
 180                                 struct {
 181                                         __u8 bn_pid;
 182                                         __u8 ra_ri_cs_fe_vld;
 183                                         __u8 ip_offset;
 184                                         __u8 tse_vlan_snap_v6_sctp_nth;
 185                                 };
 186                         };
 187                         __le16 mss;
 188                         __u8 l4_len;
 189                         __u8 reserved1;
 190                         __le16 paylen;
 191                         __u8 vmid;
 192                         __u8 qid;
 193                         __le32 reserved2[2];
 194                 } tx;
 195 
 196                 struct {
 197                         __le32 ipoff_bnum_pid_flag;
 198                         __le16 pkt_len;
 199                         __le16 size;
 200                         union {
 201                                 __le32 vlan_pri_asid;
 202                                 struct {
 203                                         __le16 asid;
 204                                         __le16 vlan_cfi_pri;
 205                                 };
 206                         };
 207                         __le32 rss_hash;
 208                         __le32 reserved_1[2];
 209                 } rx;
 210         };
 211 };
 212 
 213 struct hnae_desc_cb {
 214         dma_addr_t dma; /* dma address of this desc */
 215         void *buf;      /* cpu addr for a desc */
 216 
 217         /* priv data for the desc, e.g. skb when use with ip stack*/
 218         void *priv;
 219         u32 page_offset;
 220         u32 length;     /* length of the buffer */
 221 
 222         u16 reuse_flag;
 223 
 224        /* desc type, used by the ring user to mark the type of the priv data */
 225         u16 type;
 226 };
 227 
 228 #define setflags(flags, bits) ((flags) |= (bits))
 229 #define unsetflags(flags, bits) ((flags) &= ~(bits))
 230 
 231 /* hnae_ring->flags fields */
 232 #define RINGF_DIR 0x1       /* TX or RX ring, set if TX */
 233 #define is_tx_ring(ring) ((ring)->flags & RINGF_DIR)
 234 #define is_rx_ring(ring) (!is_tx_ring(ring))
 235 #define ring_to_dma_dir(ring) (is_tx_ring(ring) ? \
 236         DMA_TO_DEVICE : DMA_FROM_DEVICE)
 237 
 238 struct ring_stats {
 239         u64 io_err_cnt;
 240         u64 sw_err_cnt;
 241         u64 seg_pkt_cnt;
 242         union {
 243                 struct {
 244                         u64 tx_pkts;
 245                         u64 tx_bytes;
 246                         u64 tx_err_cnt;
 247                         u64 restart_queue;
 248                         u64 tx_busy;
 249                 };
 250                 struct {
 251                         u64 rx_pkts;
 252                         u64 rx_bytes;
 253                         u64 rx_err_cnt;
 254                         u64 reuse_pg_cnt;
 255                         u64 err_pkt_len;
 256                         u64 non_vld_descs;
 257                         u64 err_bd_num;
 258                         u64 l2_err;
 259                         u64 l3l4_csum_err;
 260                 };
 261         };
 262 };
 263 
 264 struct hnae_queue;
 265 
 266 struct hnae_ring {
 267         u8 __iomem *io_base; /* base io address for the ring */
 268         struct hnae_desc *desc; /* dma map address space */
 269         struct hnae_desc_cb *desc_cb;
 270         struct hnae_queue *q;
 271         int irq;
 272         char ring_name[RCB_RING_NAME_LEN];
 273 
 274         /* statistic */
 275         struct ring_stats stats;
 276 
 277         dma_addr_t desc_dma_addr;
 278         u32 buf_size;       /* size for hnae_desc->addr, preset by AE */
 279         u16 desc_num;       /* total number of desc */
 280         u16 max_desc_num_per_pkt;
 281         u16 max_raw_data_sz_per_desc;
 282         u16 max_pkt_size;
 283         int next_to_use;    /* idx of next spare desc */
 284 
 285         /* idx of lastest sent desc, the ring is empty when equal to
 286          * next_to_use
 287          */
 288         int next_to_clean;
 289 
 290         int flags;          /* ring attribute */
 291         int irq_init_flag;
 292 
 293         /* total rx bytes after last rx rate calucated */
 294         u64 coal_last_rx_bytes;
 295         unsigned long coal_last_jiffies;
 296         u32 coal_param;
 297         u32 coal_rx_rate;       /* rx rate in MB */
 298 };
 299 
 300 #define ring_ptr_move_fw(ring, p) \
 301         ((ring)->p = ((ring)->p + 1) % (ring)->desc_num)
 302 #define ring_ptr_move_bw(ring, p) \
 303         ((ring)->p = ((ring)->p - 1 + (ring)->desc_num) % (ring)->desc_num)
 304 
 305 enum hns_desc_type {
 306         DESC_TYPE_SKB,
 307         DESC_TYPE_PAGE,
 308 };
 309 
 310 #define assert_is_ring_idx(ring, idx) \
 311         assert((idx) >= 0 && (idx) < (ring)->desc_num)
 312 
 313 /* the distance between [begin, end) in a ring buffer
 314  * note: there is a unuse slot between the begin and the end
 315  */
 316 static inline int ring_dist(struct hnae_ring *ring, int begin, int end)
 317 {
 318         assert_is_ring_idx(ring, begin);
 319         assert_is_ring_idx(ring, end);
 320 
 321         return (end - begin + ring->desc_num) % ring->desc_num;
 322 }
 323 
 324 static inline int ring_space(struct hnae_ring *ring)
 325 {
 326         return ring->desc_num -
 327                 ring_dist(ring, ring->next_to_clean, ring->next_to_use) - 1;
 328 }
 329 
 330 static inline int is_ring_empty(struct hnae_ring *ring)
 331 {
 332         assert_is_ring_idx(ring, ring->next_to_use);
 333         assert_is_ring_idx(ring, ring->next_to_clean);
 334 
 335         return ring->next_to_use == ring->next_to_clean;
 336 }
 337 
 338 #define hnae_buf_size(_ring) ((_ring)->buf_size)
 339 #define hnae_page_order(_ring) (get_order(hnae_buf_size(_ring)))
 340 #define hnae_page_size(_ring) (PAGE_SIZE << hnae_page_order(_ring))
 341 
 342 struct hnae_handle;
 343 
 344 /* allocate and dma map space for hnae desc */
 345 struct hnae_buf_ops {
 346         int (*alloc_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
 347         void (*free_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
 348         int (*map_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
 349         void (*unmap_buffer)(struct hnae_ring *ring, struct hnae_desc_cb *cb);
 350 };
 351 
 352 struct hnae_queue {
 353         u8 __iomem *io_base;
 354         phys_addr_t phy_base;
 355         struct hnae_ae_dev *dev;        /* the device who use this queue */
 356         struct hnae_ring rx_ring ____cacheline_internodealigned_in_smp;
 357         struct hnae_ring tx_ring ____cacheline_internodealigned_in_smp;
 358         struct hnae_handle *handle;
 359 };
 360 
 361 /*hnae loop mode*/
 362 enum hnae_loop {
 363         MAC_INTERNALLOOP_MAC = 0,
 364         MAC_INTERNALLOOP_SERDES,
 365         MAC_INTERNALLOOP_PHY,
 366         MAC_LOOP_PHY_NONE,
 367         MAC_LOOP_NONE,
 368 };
 369 
 370 /*hnae port type*/
 371 enum hnae_port_type {
 372         HNAE_PORT_SERVICE = 0,
 373         HNAE_PORT_DEBUG
 374 };
 375 
 376 /* mac media type */
 377 enum hnae_media_type {
 378         HNAE_MEDIA_TYPE_UNKNOWN = 0,
 379         HNAE_MEDIA_TYPE_FIBER,
 380         HNAE_MEDIA_TYPE_COPPER,
 381         HNAE_MEDIA_TYPE_BACKPLANE,
 382 };
 383 
 384 /* This struct defines the operation on the handle.
 385  *
 386  * get_handle(): (mandatory)
 387  *   Get a handle from AE according to its name and options.
 388  *   the AE driver should manage the space used by handle and its queues while
 389  *   the HNAE framework will allocate desc and desc_cb for all rings in the
 390  *   queues.
 391  * put_handle():
 392  *   Release the handle.
 393  * start():
 394  *   Enable the hardware, include all queues
 395  * stop():
 396  *   Disable the hardware
 397  * set_opts(): (mandatory)
 398  *   Set options to the AE
 399  * get_opts(): (mandatory)
 400  *   Get options from the AE
 401  * get_status():
 402  *   Get the carrier state of the back channel of the handle, 1 for ok, 0 for
 403  *   non-ok
 404  * toggle_ring_irq(): (mandatory)
 405  *   Set the ring irq to be enabled(0) or disable(1)
 406  * toggle_queue_status(): (mandatory)
 407  *   Set the queue to be enabled(1) or disable(0), this will not change the
 408  *   ring irq state
 409  * adjust_link()
 410  *   adjust link status
 411  * set_loopback()
 412  *   set loopback
 413  * get_ring_bdnum_limit()
 414  *   get ring bd number limit
 415  * get_pauseparam()
 416  *   get tx and rx of pause frame use
 417  * set_autoneg()
 418  *   set auto autonegotiation of pause frame use
 419  * get_autoneg()
 420  *   get auto autonegotiation of pause frame use
 421  * set_pauseparam()
 422  *   set tx and rx of pause frame use
 423  * get_coalesce_usecs()
 424  *   get usecs to delay a TX interrupt after a packet is sent
 425  * get_rx_max_coalesced_frames()
 426  *   get Maximum number of packets to be sent before a TX interrupt.
 427  * set_coalesce_usecs()
 428  *   set usecs to delay a TX interrupt after a packet is sent
 429  * set_coalesce_frames()
 430  *   set Maximum number of packets to be sent before a TX interrupt.
 431  * get_ringnum()
 432  *   get RX/TX ring number
 433  * get_max_ringnum()
 434  *   get RX/TX ring maximum number
 435  * get_mac_addr()
 436  *   get mac address
 437  * set_mac_addr()
 438  *   set mac address
 439  * clr_mc_addr()
 440  *   clear mcast tcam table
 441  * set_mc_addr()
 442  *   set multicast mode
 443  * add_uc_addr()
 444  *   add ucast address
 445  * rm_uc_addr()
 446  *   remove ucast address
 447  * set_mtu()
 448  *   set mtu
 449  * update_stats()
 450  *   update Old network device statistics
 451  * get_ethtool_stats()
 452  *   get ethtool network device statistics
 453  * get_strings()
 454  *   get a set of strings that describe the requested objects
 455  * get_sset_count()
 456  *   get number of strings that @get_strings will write
 457  * update_led_status()
 458  *   update the led status
 459  * set_led_id()
 460  *   set led id
 461  * get_regs()
 462  *   get regs dump
 463  * get_regs_len()
 464  *   get the len of the regs dump
 465  */
 466 struct hnae_ae_ops {
 467         struct hnae_handle *(*get_handle)(struct hnae_ae_dev *dev,
 468                                           u32 port_id);
 469         void (*put_handle)(struct hnae_handle *handle);
 470         void (*init_queue)(struct hnae_queue *q);
 471         void (*fini_queue)(struct hnae_queue *q);
 472         int (*start)(struct hnae_handle *handle);
 473         void (*stop)(struct hnae_handle *handle);
 474         void (*reset)(struct hnae_handle *handle);
 475         int (*set_opts)(struct hnae_handle *handle, int type, void *opts);
 476         int (*get_opts)(struct hnae_handle *handle, int type, void **opts);
 477         int (*get_status)(struct hnae_handle *handle);
 478         int (*get_info)(struct hnae_handle *handle,
 479                         u8 *auto_neg, u16 *speed, u8 *duplex);
 480         void (*toggle_ring_irq)(struct hnae_ring *ring, u32 val);
 481         void (*adjust_link)(struct hnae_handle *handle, int speed, int duplex);
 482         bool (*need_adjust_link)(struct hnae_handle *handle,
 483                                  int speed, int duplex);
 484         int (*set_loopback)(struct hnae_handle *handle,
 485                             enum hnae_loop loop_mode, int en);
 486         void (*get_ring_bdnum_limit)(struct hnae_queue *queue,
 487                                      u32 *uplimit);
 488         void (*get_pauseparam)(struct hnae_handle *handle,
 489                                u32 *auto_neg, u32 *rx_en, u32 *tx_en);
 490         int (*set_autoneg)(struct hnae_handle *handle, u8 enable);
 491         int (*get_autoneg)(struct hnae_handle *handle);
 492         int (*set_pauseparam)(struct hnae_handle *handle,
 493                               u32 auto_neg, u32 rx_en, u32 tx_en);
 494         void (*get_coalesce_usecs)(struct hnae_handle *handle,
 495                                    u32 *tx_usecs, u32 *rx_usecs);
 496         void (*get_max_coalesced_frames)(struct hnae_handle *handle,
 497                                          u32 *tx_frames, u32 *rx_frames);
 498         int (*set_coalesce_usecs)(struct hnae_handle *handle, u32 timeout);
 499         int (*set_coalesce_frames)(struct hnae_handle *handle,
 500                                    u32 tx_frames, u32 rx_frames);
 501         void (*get_coalesce_range)(struct hnae_handle *handle,
 502                                    u32 *tx_frames_low, u32 *rx_frames_low,
 503                                    u32 *tx_frames_high, u32 *rx_frames_high,
 504                                    u32 *tx_usecs_low, u32 *rx_usecs_low,
 505                                    u32 *tx_usecs_high, u32 *rx_usecs_high);
 506         void (*set_promisc_mode)(struct hnae_handle *handle, u32 en);
 507         int (*get_mac_addr)(struct hnae_handle *handle, void **p);
 508         int (*set_mac_addr)(struct hnae_handle *handle, void *p);
 509         int (*add_uc_addr)(struct hnae_handle *handle,
 510                            const unsigned char *addr);
 511         int (*rm_uc_addr)(struct hnae_handle *handle,
 512                           const unsigned char *addr);
 513         int (*clr_mc_addr)(struct hnae_handle *handle);
 514         int (*set_mc_addr)(struct hnae_handle *handle, void *addr);
 515         int (*set_mtu)(struct hnae_handle *handle, int new_mtu);
 516         void (*set_tso_stats)(struct hnae_handle *handle, int enable);
 517         void (*update_stats)(struct hnae_handle *handle,
 518                              struct net_device_stats *net_stats);
 519         void (*get_stats)(struct hnae_handle *handle, u64 *data);
 520         void (*get_strings)(struct hnae_handle *handle,
 521                             u32 stringset, u8 *data);
 522         int (*get_sset_count)(struct hnae_handle *handle, int stringset);
 523         void (*update_led_status)(struct hnae_handle *handle);
 524         int (*set_led_id)(struct hnae_handle *handle,
 525                           enum hnae_led_state status);
 526         void (*get_regs)(struct hnae_handle *handle, void *data);
 527         int (*get_regs_len)(struct hnae_handle *handle);
 528         u32     (*get_rss_key_size)(struct hnae_handle *handle);
 529         u32     (*get_rss_indir_size)(struct hnae_handle *handle);
 530         int     (*get_rss)(struct hnae_handle *handle, u32 *indir, u8 *key,
 531                            u8 *hfunc);
 532         int     (*set_rss)(struct hnae_handle *handle, const u32 *indir,
 533                            const u8 *key, const u8 hfunc);
 534 };
 535 
 536 struct hnae_ae_dev {
 537         struct device cls_dev; /* the class dev */
 538         struct device *dev; /* the presented dev */
 539         struct hnae_ae_ops *ops;
 540         struct list_head node;
 541         struct module *owner; /* the module who provides this dev */
 542         int id;
 543         char name[AE_NAME_SIZE];
 544         struct list_head handle_list;
 545         spinlock_t lock; /* lock to protect the handle_list */
 546 };
 547 
 548 struct hnae_handle {
 549         struct device *owner_dev; /* the device which make use of this handle */
 550         struct hnae_ae_dev *dev;  /* the device who provides this handle */
 551         struct phy_device *phy_dev;
 552         phy_interface_t phy_if;
 553         u32 if_support;
 554         int q_num;
 555         int vf_id;
 556         unsigned long coal_last_jiffies;
 557         u32 coal_param;         /* self adapt coalesce param */
 558         /* the ring index of last ring that set coal param */
 559         u32 coal_ring_idx;
 560         u32 eport_id;
 561         u32 dport_id;   /* v2 tx bd should fill the dport_id */
 562         bool coal_adapt_en;
 563         enum hnae_port_type port_type;
 564         enum hnae_media_type media_type;
 565         struct list_head node;    /* list to hnae_ae_dev->handle_list */
 566         struct hnae_buf_ops *bops; /* operation for the buffer */
 567         struct hnae_queue **qs;  /* array base of all queues */
 568 };
 569 
 570 #define ring_to_dev(ring) ((ring)->q->dev->dev)
 571 
 572 struct hnae_handle *hnae_get_handle(struct device *owner_dev,
 573                                     const struct fwnode_handle  *fwnode,
 574                                     u32 port_id,
 575                                     struct hnae_buf_ops *bops);
 576 
 577 void hnae_put_handle(struct hnae_handle *handle);
 578 int hnae_ae_register(struct hnae_ae_dev *dev, struct module *owner);
 579 void hnae_ae_unregister(struct hnae_ae_dev *dev);
 580 
 581 int hnae_register_notifier(struct notifier_block *nb);
 582 void hnae_unregister_notifier(struct notifier_block *nb);
 583 int hnae_reinit_handle(struct hnae_handle *handle);
 584 
 585 #define hnae_queue_xmit(q, buf_num) writel_relaxed(buf_num, \
 586         (q)->tx_ring.io_base + RCB_REG_TAIL)
 587 
 588 #ifndef assert
 589 #define assert(cond)
 590 #endif
 591 
 592 static inline int hnae_reserve_buffer_map(struct hnae_ring *ring,
 593                                           struct hnae_desc_cb *cb)
 594 {
 595         struct hnae_buf_ops *bops = ring->q->handle->bops;
 596         int ret;
 597 
 598         ret = bops->alloc_buffer(ring, cb);
 599         if (ret)
 600                 goto out;
 601 
 602         ret = bops->map_buffer(ring, cb);
 603         if (ret)
 604                 goto out_with_buf;
 605 
 606         return 0;
 607 
 608 out_with_buf:
 609         bops->free_buffer(ring, cb);
 610 out:
 611         return ret;
 612 }
 613 
 614 static inline int hnae_alloc_buffer_attach(struct hnae_ring *ring, int i)
 615 {
 616         int ret = hnae_reserve_buffer_map(ring, &ring->desc_cb[i]);
 617 
 618         if (ret)
 619                 return ret;
 620 
 621         ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
 622 
 623         return 0;
 624 }
 625 
 626 static inline void hnae_buffer_detach(struct hnae_ring *ring, int i)
 627 {
 628         ring->q->handle->bops->unmap_buffer(ring, &ring->desc_cb[i]);
 629         ring->desc[i].addr = 0;
 630 }
 631 
 632 static inline void hnae_free_buffer_detach(struct hnae_ring *ring, int i)
 633 {
 634         struct hnae_buf_ops *bops = ring->q->handle->bops;
 635         struct hnae_desc_cb *cb = &ring->desc_cb[i];
 636 
 637         if (!ring->desc_cb[i].dma)
 638                 return;
 639 
 640         hnae_buffer_detach(ring, i);
 641         bops->free_buffer(ring, cb);
 642 }
 643 
 644 /* detach a in-used buffer and replace with a reserved one  */
 645 static inline void hnae_replace_buffer(struct hnae_ring *ring, int i,
 646                                        struct hnae_desc_cb *res_cb)
 647 {
 648         struct hnae_buf_ops *bops = ring->q->handle->bops;
 649 
 650         bops->unmap_buffer(ring, &ring->desc_cb[i]);
 651         ring->desc_cb[i] = *res_cb;
 652         ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma);
 653         ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
 654 }
 655 
 656 static inline void hnae_reuse_buffer(struct hnae_ring *ring, int i)
 657 {
 658         ring->desc_cb[i].reuse_flag = 0;
 659         ring->desc[i].addr = cpu_to_le64(ring->desc_cb[i].dma
 660                 + ring->desc_cb[i].page_offset);
 661         ring->desc[i].rx.ipoff_bnum_pid_flag = 0;
 662 }
 663 
 664 /* when reinit buffer size, we should reinit buffer description */
 665 static inline void hnae_reinit_all_ring_desc(struct hnae_handle *h)
 666 {
 667         int i, j;
 668         struct hnae_ring *ring;
 669 
 670         for (i = 0; i < h->q_num; i++) {
 671                 ring = &h->qs[i]->rx_ring;
 672                 for (j = 0; j < ring->desc_num; j++)
 673                         ring->desc[j].addr = cpu_to_le64(ring->desc_cb[j].dma);
 674         }
 675 
 676         wmb();  /* commit all data before submit */
 677 }
 678 
 679 /* when reinit buffer size, we should reinit page offset */
 680 static inline void hnae_reinit_all_ring_page_off(struct hnae_handle *h)
 681 {
 682         int i, j;
 683         struct hnae_ring *ring;
 684 
 685         for (i = 0; i < h->q_num; i++) {
 686                 ring = &h->qs[i]->rx_ring;
 687                 for (j = 0; j < ring->desc_num; j++) {
 688                         ring->desc_cb[j].page_offset = 0;
 689                         if (ring->desc[j].addr !=
 690                             cpu_to_le64(ring->desc_cb[j].dma))
 691                                 ring->desc[j].addr =
 692                                         cpu_to_le64(ring->desc_cb[j].dma);
 693                 }
 694         }
 695 
 696         wmb();  /* commit all data before submit */
 697 }
 698 
 699 #define hnae_set_field(origin, mask, shift, val) \
 700         do { \
 701                 (origin) &= (~(mask)); \
 702                 (origin) |= ((val) << (shift)) & (mask); \
 703         } while (0)
 704 
 705 #define hnae_set_bit(origin, shift, val) \
 706         hnae_set_field((origin), (0x1 << (shift)), (shift), (val))
 707 
 708 #define hnae_get_field(origin, mask, shift) (((origin) & (mask)) >> (shift))
 709 
 710 #define hnae_get_bit(origin, shift) \
 711         hnae_get_field((origin), (0x1 << (shift)), (shift))
 712 
 713 #endif
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root/drivers/net/ethernet/hisilicon/hns/hnae.h

INCLUDED FROM

DEFINITIONS
