drivers/net/wireless/mediatek/mt76/mt76.h

   1 /*
   2  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
   3  *
   4  * Permission to use, copy, modify, and/or distribute this software for any
   5  * purpose with or without fee is hereby granted, provided that the above
   6  * copyright notice and this permission notice appear in all copies.
   7  *
   8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
   9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  15  */
  16
  17 #ifndef __MT76_H
  18 #define __MT76_H
  19
  20 #include <linux/kernel.h>
  21 #include <linux/io.h>
  22 #include <linux/spinlock.h>
  23 #include <linux/skbuff.h>
  24 #include <linux/leds.h>
  25 #include <linux/usb.h>
  26 #include <linux/average.h>
  27 #include <net/mac80211.h>
  28 #include "util.h"
  29
  30 #define MT_TX_RING_SIZE     256
  31 #define MT_MCU_RING_SIZE    32
  32 #define MT_RX_BUF_SIZE      2048
  33
  34 struct mt76_dev;
  35 struct mt76_wcid;
  36
  37 struct mt76_reg_pair {
  38         u32 reg;
  39         u32 value;
  40 };
  41
  42 enum mt76_bus_type {
  43         MT76_BUS_MMIO,
  44         MT76_BUS_USB,
  45 };
  46
  47 struct mt76_bus_ops {
  48         u32 (*rr)(struct mt76_dev *dev, u32 offset);
  49         void (*wr)(struct mt76_dev *dev, u32 offset, u32 val);
  50         u32 (*rmw)(struct mt76_dev *dev, u32 offset, u32 mask, u32 val);
  51         void (*copy)(struct mt76_dev *dev, u32 offset, const void *data,
  52                      int len);
  53         int (*wr_rp)(struct mt76_dev *dev, u32 base,
  54                      const struct mt76_reg_pair *rp, int len);
  55         int (*rd_rp)(struct mt76_dev *dev, u32 base,
  56                      struct mt76_reg_pair *rp, int len);
  57         enum mt76_bus_type type;
  58 };
  59
  60 #define mt76_is_usb(dev) ((dev)->mt76.bus->type == MT76_BUS_USB)
  61 #define mt76_is_mmio(dev) ((dev)->mt76.bus->type == MT76_BUS_MMIO)
  62
  63 enum mt76_txq_id {
  64         MT_TXQ_VO = IEEE80211_AC_VO,
  65         MT_TXQ_VI = IEEE80211_AC_VI,
  66         MT_TXQ_BE = IEEE80211_AC_BE,
  67         MT_TXQ_BK = IEEE80211_AC_BK,
  68         MT_TXQ_PSD,
  69         MT_TXQ_MCU,
  70         MT_TXQ_BEACON,
  71         MT_TXQ_CAB,
  72         __MT_TXQ_MAX
  73 };
  74
  75 enum mt76_rxq_id {
  76         MT_RXQ_MAIN,
  77         MT_RXQ_MCU,
  78         __MT_RXQ_MAX
  79 };
  80
  81 struct mt76_queue_buf {
  82         dma_addr_t addr;
  83         int len;
  84 };
  85
  86 struct mt76u_buf {
  87         struct mt76_dev *dev;
  88         struct urb *urb;
  89         size_t len;
  90         void *buf;
  91         bool done;
  92 };
  93
  94 struct mt76_queue_entry {
  95         union {
  96                 void *buf;
  97                 struct sk_buff *skb;
  98         };
  99         union {
 100                 struct mt76_txwi_cache *txwi;
 101                 struct mt76u_buf ubuf;
 102         };
 103         bool schedule;
 104 };
 105
 106 struct mt76_queue_regs {
 107         u32 desc_base;
 108         u32 ring_size;
 109         u32 cpu_idx;
 110         u32 dma_idx;
 111 } __packed __aligned(4);
 112
 113 struct mt76_queue {
 114         struct mt76_queue_regs __iomem *regs;
 115
 116         spinlock_t lock;
 117         struct mt76_queue_entry *entry;
 118         struct mt76_desc *desc;
 119
 120         struct list_head swq;
 121         int swq_queued;
 122
 123         u16 first;
 124         u16 head;
 125         u16 tail;
 126         int ndesc;
 127         int queued;
 128         int buf_size;
 129
 130         u8 buf_offset;
 131         u8 hw_idx;
 132
 133         dma_addr_t desc_dma;
 134         struct sk_buff *rx_head;
 135         struct page_frag_cache rx_page;
 136         spinlock_t rx_page_lock;
 137 };
 138
 139 struct mt76_mcu_ops {
 140         int (*mcu_send_msg)(struct mt76_dev *dev, int cmd, const void *data,
 141                             int len, bool wait_resp);
 142         int (*mcu_wr_rp)(struct mt76_dev *dev, u32 base,
 143                          const struct mt76_reg_pair *rp, int len);
 144         int (*mcu_rd_rp)(struct mt76_dev *dev, u32 base,
 145                          struct mt76_reg_pair *rp, int len);
 146 };
 147
 148 struct mt76_queue_ops {
 149         int (*init)(struct mt76_dev *dev);
 150
 151         int (*alloc)(struct mt76_dev *dev, struct mt76_queue *q);
 152
 153         int (*add_buf)(struct mt76_dev *dev, struct mt76_queue *q,
 154                        struct mt76_queue_buf *buf, int nbufs, u32 info,
 155                        struct sk_buff *skb, void *txwi);
 156
 157         int (*tx_queue_skb)(struct mt76_dev *dev, struct mt76_queue *q,
 158                             struct sk_buff *skb, struct mt76_wcid *wcid,
 159                             struct ieee80211_sta *sta);
 160
 161         int (*tx_queue_skb_raw)(struct mt76_dev *dev, enum mt76_txq_id qid,
 162                                 struct sk_buff *skb, u32 tx_info);
 163
 164         void *(*dequeue)(struct mt76_dev *dev, struct mt76_queue *q, bool flush,
 165                          int *len, u32 *info, bool *more);
 166
 167         void (*rx_reset)(struct mt76_dev *dev, enum mt76_rxq_id qid);
 168
 169         void (*tx_cleanup)(struct mt76_dev *dev, enum mt76_txq_id qid,
 170                            bool flush);
 171
 172         void (*kick)(struct mt76_dev *dev, struct mt76_queue *q);
 173 };
 174
 175 enum mt76_wcid_flags {
 176         MT_WCID_FLAG_CHECK_PS,
 177         MT_WCID_FLAG_PS,
 178 };
 179
 180 #define MT76_N_WCIDS 128
 181
 182 DECLARE_EWMA(signal, 10, 8);
 183
 184 struct mt76_wcid {
 185         struct mt76_rx_tid __rcu *aggr[IEEE80211_NUM_TIDS];
 186
 187         struct work_struct aggr_work;
 188
 189         unsigned long flags;
 190
 191         struct ewma_signal rssi;
 192         int inactive_count;
 193
 194         u8 idx;
 195         u8 hw_key_idx;
 196
 197         u8 sta:1;
 198
 199         u8 rx_check_pn;
 200         u8 rx_key_pn[IEEE80211_NUM_TIDS][6];
 201
 202         __le16 tx_rate;
 203         bool tx_rate_set;
 204         u8 tx_rate_nss;
 205         s8 max_txpwr_adj;
 206         bool sw_iv;
 207
 208         u8 packet_id;
 209 };
 210
 211 struct mt76_txq {
 212         struct list_head list;
 213         struct mt76_queue *hwq;
 214         struct mt76_wcid *wcid;
 215
 216         struct sk_buff_head retry_q;
 217
 218         u16 agg_ssn;
 219         bool send_bar;
 220         bool aggr;
 221 };
 222
 223 struct mt76_txwi_cache {
 224         u32 txwi[8];
 225         dma_addr_t dma_addr;
 226         struct list_head list;
 227 };
 228
 229
 230 struct mt76_rx_tid {
 231         struct rcu_head rcu_head;
 232
 233         struct mt76_dev *dev;
 234
 235         spinlock_t lock;
 236         struct delayed_work reorder_work;
 237
 238         u16 head;
 239         u8 size;
 240         u8 nframes;
 241
 242         u8 started:1, stopped:1, timer_pending:1;
 243
 244         struct sk_buff *reorder_buf[];
 245 };
 246
 247 #define MT_TX_CB_DMA_DONE               BIT(0)
 248 #define MT_TX_CB_TXS_DONE               BIT(1)
 249 #define MT_TX_CB_TXS_FAILED             BIT(2)
 250
 251 #define MT_PACKET_ID_MASK               GENMASK(7, 0)
 252 #define MT_PACKET_ID_NO_ACK             0
 253 #define MT_PACKET_ID_NO_SKB             1
 254 #define MT_PACKET_ID_FIRST              2
 255
 256 #define MT_TX_STATUS_SKB_TIMEOUT        HZ
 257
 258 struct mt76_tx_cb {
 259         unsigned long jiffies;
 260         u8 wcid;
 261         u8 pktid;
 262         u8 flags;
 263 };
 264
 265 enum {
 266         MT76_STATE_INITIALIZED,
 267         MT76_STATE_RUNNING,
 268         MT76_STATE_MCU_RUNNING,
 269         MT76_SCANNING,
 270         MT76_RESET,
 271         MT76_OFFCHANNEL,
 272         MT76_REMOVED,
 273         MT76_READING_STATS,
 274 };
 275
 276 struct mt76_hw_cap {
 277         bool has_2ghz;
 278         bool has_5ghz;
 279 };
 280
 281 struct mt76_driver_ops {
 282         u16 txwi_size;
 283
 284         void (*update_survey)(struct mt76_dev *dev);
 285
 286         int (*tx_prepare_skb)(struct mt76_dev *dev, void *txwi_ptr,
 287                               struct sk_buff *skb, struct mt76_queue *q,
 288                               struct mt76_wcid *wcid,
 289                               struct ieee80211_sta *sta, u32 *tx_info);
 290
 291         void (*tx_complete_skb)(struct mt76_dev *dev, struct mt76_queue *q,
 292                                 struct mt76_queue_entry *e, bool flush);
 293
 294         bool (*tx_status_data)(struct mt76_dev *dev, u8 *update);
 295
 296         void (*rx_skb)(struct mt76_dev *dev, enum mt76_rxq_id q,
 297                        struct sk_buff *skb);
 298
 299         void (*rx_poll_complete)(struct mt76_dev *dev, enum mt76_rxq_id q);
 300
 301         void (*sta_ps)(struct mt76_dev *dev, struct ieee80211_sta *sta,
 302                        bool ps);
 303
 304         int (*sta_add)(struct mt76_dev *dev, struct ieee80211_vif *vif,
 305                        struct ieee80211_sta *sta);
 306
 307         void (*sta_assoc)(struct mt76_dev *dev, struct ieee80211_vif *vif,
 308                           struct ieee80211_sta *sta);
 309
 310         void (*sta_remove)(struct mt76_dev *dev, struct ieee80211_vif *vif,
 311                            struct ieee80211_sta *sta);
 312 };
 313
 314 struct mt76_channel_state {
 315         u64 cc_active;
 316         u64 cc_busy;
 317 };
 318
 319 struct mt76_sband {
 320         struct ieee80211_supported_band sband;
 321         struct mt76_channel_state *chan;
 322 };
 323
 324 struct mt76_rate_power {
 325         union {
 326                 struct {
 327                         s8 cck[4];
 328                         s8 ofdm[8];
 329                         s8 stbc[10];
 330                         s8 ht[16];
 331                         s8 vht[10];
 332                 };
 333                 s8 all[48];
 334         };
 335 };
 336
 337 /* addr req mask */
 338 #define MT_VEND_TYPE_EEPROM     BIT(31)
 339 #define MT_VEND_TYPE_CFG        BIT(30)
 340 #define MT_VEND_TYPE_MASK       (MT_VEND_TYPE_EEPROM | MT_VEND_TYPE_CFG)
 341
 342 #define MT_VEND_ADDR(type, n)   (MT_VEND_TYPE_##type | (n))
 343 enum mt_vendor_req {
 344         MT_VEND_DEV_MODE =      0x1,
 345         MT_VEND_WRITE =         0x2,
 346         MT_VEND_MULTI_WRITE =   0x6,
 347         MT_VEND_MULTI_READ =    0x7,
 348         MT_VEND_READ_EEPROM =   0x9,
 349         MT_VEND_WRITE_FCE =     0x42,
 350         MT_VEND_WRITE_CFG =     0x46,
 351         MT_VEND_READ_CFG =      0x47,
 352 };
 353
 354 enum mt76u_in_ep {
 355         MT_EP_IN_PKT_RX,
 356         MT_EP_IN_CMD_RESP,
 357         __MT_EP_IN_MAX,
 358 };
 359
 360 enum mt76u_out_ep {
 361         MT_EP_OUT_INBAND_CMD,
 362         MT_EP_OUT_AC_BK,
 363         MT_EP_OUT_AC_BE,
 364         MT_EP_OUT_AC_VI,
 365         MT_EP_OUT_AC_VO,
 366         MT_EP_OUT_HCCA,
 367         __MT_EP_OUT_MAX,
 368 };
 369
 370 #define MT_SG_MAX_SIZE          8
 371 #define MT_NUM_TX_ENTRIES       256
 372 #define MT_NUM_RX_ENTRIES       128
 373 #define MCU_RESP_URB_SIZE       1024
 374 struct mt76_usb {
 375         struct mutex usb_ctrl_mtx;
 376         u8 data[32];
 377
 378         struct tasklet_struct rx_tasklet;
 379         struct tasklet_struct tx_tasklet;
 380         struct delayed_work stat_work;
 381
 382         u8 out_ep[__MT_EP_OUT_MAX];
 383         u16 out_max_packet;
 384         u8 in_ep[__MT_EP_IN_MAX];
 385         u16 in_max_packet;
 386         bool sg_en;
 387
 388         struct mt76u_mcu {
 389                 struct mutex mutex;
 390                 u8 *data;
 391                 u32 msg_seq;
 392
 393                 /* multiple reads */
 394                 struct mt76_reg_pair *rp;
 395                 int rp_len;
 396                 u32 base;
 397                 bool burst;
 398         } mcu;
 399 };
 400
 401 struct mt76_mmio {
 402         struct mt76e_mcu {
 403                 struct mutex mutex;
 404
 405                 wait_queue_head_t wait;
 406                 struct sk_buff_head res_q;
 407
 408                 u32 msg_seq;
 409         } mcu;
 410         void __iomem *regs;
 411         spinlock_t irq_lock;
 412         u32 irqmask;
 413 };
 414
 415 struct mt76_dev {
 416         struct ieee80211_hw *hw;
 417         struct cfg80211_chan_def chandef;
 418         struct ieee80211_channel *main_chan;
 419
 420         spinlock_t lock;
 421         spinlock_t cc_lock;
 422
 423         struct mutex mutex;
 424
 425         const struct mt76_bus_ops *bus;
 426         const struct mt76_driver_ops *drv;
 427         const struct mt76_mcu_ops *mcu_ops;
 428         struct device *dev;
 429
 430         struct net_device napi_dev;
 431         spinlock_t rx_lock;
 432         struct napi_struct napi[__MT_RXQ_MAX];
 433         struct sk_buff_head rx_skb[__MT_RXQ_MAX];
 434
 435         struct list_head txwi_cache;
 436         struct mt76_queue q_tx[__MT_TXQ_MAX];
 437         struct mt76_queue q_rx[__MT_RXQ_MAX];
 438         const struct mt76_queue_ops *queue_ops;
 439         int tx_dma_idx[4];
 440
 441         wait_queue_head_t tx_wait;
 442         struct sk_buff_head status_list;
 443
 444         unsigned long wcid_mask[MT76_N_WCIDS / BITS_PER_LONG];
 445
 446         struct mt76_wcid global_wcid;
 447         struct mt76_wcid __rcu *wcid[MT76_N_WCIDS];
 448
 449         u8 macaddr[ETH_ALEN];
 450         u32 rev;
 451         unsigned long state;
 452
 453         u8 antenna_mask;
 454         u16 chainmask;
 455
 456         struct mt76_sband sband_2g;
 457         struct mt76_sband sband_5g;
 458         struct debugfs_blob_wrapper eeprom;
 459         struct debugfs_blob_wrapper otp;
 460         struct mt76_hw_cap cap;
 461
 462         struct mt76_rate_power rate_power;
 463         int txpower_conf;
 464         int txpower_cur;
 465
 466         u32 debugfs_reg;
 467
 468         struct led_classdev led_cdev;
 469         char led_name[32];
 470         bool led_al;
 471         u8 led_pin;
 472
 473         u8 csa_complete;
 474
 475         u32 rxfilter;
 476
 477         union {
 478                 struct mt76_mmio mmio;
 479                 struct mt76_usb usb;
 480         };
 481 };
 482
 483 enum mt76_phy_type {
 484         MT_PHY_TYPE_CCK,
 485         MT_PHY_TYPE_OFDM,
 486         MT_PHY_TYPE_HT,
 487         MT_PHY_TYPE_HT_GF,
 488         MT_PHY_TYPE_VHT,
 489 };
 490
 491 struct mt76_rx_status {
 492         struct mt76_wcid *wcid;
 493
 494         unsigned long reorder_time;
 495
 496         u8 iv[6];
 497
 498         u8 aggr:1;
 499         u8 tid;
 500         u16 seqno;
 501
 502         u16 freq;
 503         u32 flag;
 504         u8 enc_flags;
 505         u8 encoding:2, bw:3;
 506         u8 rate_idx;
 507         u8 nss;
 508         u8 band;
 509         s8 signal;
 510         u8 chains;
 511         s8 chain_signal[IEEE80211_MAX_CHAINS];
 512 };
 513
 514 #define __mt76_rr(dev, ...)     (dev)->bus->rr((dev), __VA_ARGS__)
 515 #define __mt76_wr(dev, ...)     (dev)->bus->wr((dev), __VA_ARGS__)
 516 #define __mt76_rmw(dev, ...)    (dev)->bus->rmw((dev), __VA_ARGS__)
 517 #define __mt76_wr_copy(dev, ...)        (dev)->bus->copy((dev), __VA_ARGS__)
 518
 519 #define __mt76_set(dev, offset, val)    __mt76_rmw(dev, offset, 0, val)
 520 #define __mt76_clear(dev, offset, val)  __mt76_rmw(dev, offset, val, 0)
 521
 522 #define mt76_rr(dev, ...)       (dev)->mt76.bus->rr(&((dev)->mt76), __VA_ARGS__)
 523 #define mt76_wr(dev, ...)       (dev)->mt76.bus->wr(&((dev)->mt76), __VA_ARGS__)
 524 #define mt76_rmw(dev, ...)      (dev)->mt76.bus->rmw(&((dev)->mt76), __VA_ARGS__)
 525 #define mt76_wr_copy(dev, ...)  (dev)->mt76.bus->copy(&((dev)->mt76), __VA_ARGS__)
 526 #define mt76_wr_rp(dev, ...)    (dev)->mt76.bus->wr_rp(&((dev)->mt76), __VA_ARGS__)
 527 #define mt76_rd_rp(dev, ...)    (dev)->mt76.bus->rd_rp(&((dev)->mt76), __VA_ARGS__)
 528
 529 #define mt76_mcu_send_msg(dev, ...)     (dev)->mt76.mcu_ops->mcu_send_msg(&((dev)->mt76), __VA_ARGS__)
 530
 531 #define mt76_set(dev, offset, val)      mt76_rmw(dev, offset, 0, val)
 532 #define mt76_clear(dev, offset, val)    mt76_rmw(dev, offset, val, 0)
 533
 534 #define mt76_get_field(_dev, _reg, _field)              \
 535         FIELD_GET(_field, mt76_rr(dev, _reg))
 536
 537 #define mt76_rmw_field(_dev, _reg, _field, _val)        \
 538         mt76_rmw(_dev, _reg, _field, FIELD_PREP(_field, _val))
 539
 540 #define __mt76_rmw_field(_dev, _reg, _field, _val)      \
 541         __mt76_rmw(_dev, _reg, _field, FIELD_PREP(_field, _val))
 542
 543 #define mt76_hw(dev) (dev)->mt76.hw
 544
 545 bool __mt76_poll(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
 546                  int timeout);
 547
 548 #define mt76_poll(dev, ...) __mt76_poll(&((dev)->mt76), __VA_ARGS__)
 549
 550 bool __mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
 551                       int timeout);
 552
 553 #define mt76_poll_msec(dev, ...) __mt76_poll_msec(&((dev)->mt76), __VA_ARGS__)
 554
 555 void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs);
 556
 557 static inline u16 mt76_chip(struct mt76_dev *dev)
 558 {
 559         return dev->rev >> 16;
 560 }
 561
 562 static inline u16 mt76_rev(struct mt76_dev *dev)
 563 {
 564         return dev->rev & 0xffff;
 565 }
 566
 567 #define mt76xx_chip(dev) mt76_chip(&((dev)->mt76))
 568 #define mt76xx_rev(dev) mt76_rev(&((dev)->mt76))
 569
 570 #define mt76_init_queues(dev)           (dev)->mt76.queue_ops->init(&((dev)->mt76))
 571 #define mt76_queue_alloc(dev, ...)      (dev)->mt76.queue_ops->alloc(&((dev)->mt76), __VA_ARGS__)
 572 #define mt76_tx_queue_skb_raw(dev, ...) (dev)->mt76.queue_ops->tx_queue_skb_raw(&((dev)->mt76), __VA_ARGS__)
 573 #define mt76_queue_rx_reset(dev, ...)   (dev)->mt76.queue_ops->rx_reset(&((dev)->mt76), __VA_ARGS__)
 574 #define mt76_queue_tx_cleanup(dev, ...) (dev)->mt76.queue_ops->tx_cleanup(&((dev)->mt76), __VA_ARGS__)
 575 #define mt76_queue_kick(dev, ...)       (dev)->mt76.queue_ops->kick(&((dev)->mt76), __VA_ARGS__)
 576
 577 static inline struct mt76_channel_state *
 578 mt76_channel_state(struct mt76_dev *dev, struct ieee80211_channel *c)
 579 {
 580         struct mt76_sband *msband;
 581         int idx;
 582
 583         if (c->band == NL80211_BAND_2GHZ)
 584                 msband = &dev->sband_2g;
 585         else
 586                 msband = &dev->sband_5g;
 587
 588         idx = c - &msband->sband.channels[0];
 589         return &msband->chan[idx];
 590 }
 591
 592 struct mt76_dev *mt76_alloc_device(struct device *pdev, unsigned int size,
 593                                    const struct ieee80211_ops *ops,
 594                                    const struct mt76_driver_ops *drv_ops);
 595 int mt76_register_device(struct mt76_dev *dev, bool vht,
 596                          struct ieee80211_rate *rates, int n_rates);
 597 void mt76_unregister_device(struct mt76_dev *dev);
 598
 599 struct dentry *mt76_register_debugfs(struct mt76_dev *dev);
 600 void mt76_seq_puts_array(struct seq_file *file, const char *str,
 601                          s8 *val, int len);
 602
 603 int mt76_eeprom_init(struct mt76_dev *dev, int len);
 604 void mt76_eeprom_override(struct mt76_dev *dev);
 605
 606 /* increment with wrap-around */
 607 static inline int mt76_incr(int val, int size)
 608 {
 609         return (val + 1) & (size - 1);
 610 }
 611
 612 /* decrement with wrap-around */
 613 static inline int mt76_decr(int val, int size)
 614 {
 615         return (val - 1) & (size - 1);
 616 }
 617
 618 u8 mt76_ac_to_hwq(u8 ac);
 619
 620 static inline struct ieee80211_txq *
 621 mtxq_to_txq(struct mt76_txq *mtxq)
 622 {
 623         void *ptr = mtxq;
 624
 625         return container_of(ptr, struct ieee80211_txq, drv_priv);
 626 }
 627
 628 static inline struct ieee80211_sta *
 629 wcid_to_sta(struct mt76_wcid *wcid)
 630 {
 631         void *ptr = wcid;
 632
 633         if (!wcid || !wcid->sta)
 634                 return NULL;
 635
 636         return container_of(ptr, struct ieee80211_sta, drv_priv);
 637 }
 638
 639 static inline struct mt76_tx_cb *mt76_tx_skb_cb(struct sk_buff *skb)
 640 {
 641         BUILD_BUG_ON(sizeof(struct mt76_tx_cb) >
 642                      sizeof(IEEE80211_SKB_CB(skb)->status.status_driver_data));
 643         return ((void *) IEEE80211_SKB_CB(skb)->status.status_driver_data);
 644 }
 645
 646 int mt76_dma_tx_queue_skb(struct mt76_dev *dev, struct mt76_queue *q,
 647                           struct sk_buff *skb, struct mt76_wcid *wcid,
 648                           struct ieee80211_sta *sta);
 649
 650 void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb);
 651 void mt76_tx(struct mt76_dev *dev, struct ieee80211_sta *sta,
 652              struct mt76_wcid *wcid, struct sk_buff *skb);
 653 void mt76_txq_init(struct mt76_dev *dev, struct ieee80211_txq *txq);
 654 void mt76_txq_remove(struct mt76_dev *dev, struct ieee80211_txq *txq);
 655 void mt76_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *txq);
 656 void mt76_stop_tx_queues(struct mt76_dev *dev, struct ieee80211_sta *sta,
 657                          bool send_bar);
 658 void mt76_txq_schedule(struct mt76_dev *dev, struct mt76_queue *hwq);
 659 void mt76_txq_schedule_all(struct mt76_dev *dev);
 660 void mt76_release_buffered_frames(struct ieee80211_hw *hw,
 661                                   struct ieee80211_sta *sta,
 662                                   u16 tids, int nframes,
 663                                   enum ieee80211_frame_release_type reason,
 664                                   bool more_data);
 665 void mt76_set_channel(struct mt76_dev *dev);
 666 int mt76_get_survey(struct ieee80211_hw *hw, int idx,
 667                     struct survey_info *survey);
 668 void mt76_set_stream_caps(struct mt76_dev *dev, bool vht);
 669
 670 int mt76_rx_aggr_start(struct mt76_dev *dev, struct mt76_wcid *wcid, u8 tid,
 671                        u16 ssn, u8 size);
 672 void mt76_rx_aggr_stop(struct mt76_dev *dev, struct mt76_wcid *wcid, u8 tid);
 673
 674 void mt76_wcid_key_setup(struct mt76_dev *dev, struct mt76_wcid *wcid,
 675                          struct ieee80211_key_conf *key);
 676
 677 void mt76_tx_status_lock(struct mt76_dev *dev, struct sk_buff_head *list)
 678                          __acquires(&dev->status_list.lock);
 679 void mt76_tx_status_unlock(struct mt76_dev *dev, struct sk_buff_head *list)
 680                            __releases(&dev->status_list.lock);
 681
 682 int mt76_tx_status_skb_add(struct mt76_dev *dev, struct mt76_wcid *wcid,
 683                            struct sk_buff *skb);
 684 struct sk_buff *mt76_tx_status_skb_get(struct mt76_dev *dev,
 685                                        struct mt76_wcid *wcid, int pktid,
 686                                        struct sk_buff_head *list);
 687 void mt76_tx_status_skb_done(struct mt76_dev *dev, struct sk_buff *skb,
 688                              struct sk_buff_head *list);
 689 void mt76_tx_complete_skb(struct mt76_dev *dev, struct sk_buff *skb);
 690 void mt76_tx_status_check(struct mt76_dev *dev, struct mt76_wcid *wcid,
 691                           bool flush);
 692 int mt76_sta_state(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 693                    struct ieee80211_sta *sta,
 694                    enum ieee80211_sta_state old_state,
 695                    enum ieee80211_sta_state new_state);
 696
 697 struct ieee80211_sta *mt76_rx_convert(struct sk_buff *skb);
 698
 699 int mt76_get_min_avg_rssi(struct mt76_dev *dev);
 700
 701 int mt76_get_txpower(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
 702                      int *dbm);
 703
 704 void mt76_csa_check(struct mt76_dev *dev);
 705 void mt76_csa_finish(struct mt76_dev *dev);
 706
 707 /* internal */
 708 void mt76_tx_free(struct mt76_dev *dev);
 709 struct mt76_txwi_cache *mt76_get_txwi(struct mt76_dev *dev);
 710 void mt76_put_txwi(struct mt76_dev *dev, struct mt76_txwi_cache *t);
 711 void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,
 712                       struct napi_struct *napi);
 713 void mt76_rx_poll_complete(struct mt76_dev *dev, enum mt76_rxq_id q,
 714                            struct napi_struct *napi);
 715 void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames);
 716
 717 /* usb */
 718 static inline bool mt76u_urb_error(struct urb *urb)
 719 {
 720         return urb->status &&
 721                urb->status != -ECONNRESET &&
 722                urb->status != -ESHUTDOWN &&
 723                urb->status != -ENOENT;
 724 }
 725
 726 /* Map hardware queues to usb endpoints */
 727 static inline u8 q2ep(u8 qid)
 728 {
 729         /* TODO: take management packets to queue 5 */
 730         return qid + 1;
 731 }
 732
 733 static inline int
 734 mt76u_bulk_msg(struct mt76_dev *dev, void *data, int len, int *actual_len,
 735                int timeout)
 736 {
 737         struct usb_interface *intf = to_usb_interface(dev->dev);
 738         struct usb_device *udev = interface_to_usbdev(intf);
 739         struct mt76_usb *usb = &dev->usb;
 740         unsigned int pipe;
 741
 742         if (actual_len)
 743                 pipe = usb_rcvbulkpipe(udev, usb->in_ep[MT_EP_IN_CMD_RESP]);
 744         else
 745                 pipe = usb_sndbulkpipe(udev, usb->out_ep[MT_EP_OUT_INBAND_CMD]);
 746
 747         return usb_bulk_msg(udev, pipe, data, len, actual_len, timeout);
 748 }
 749
 750 int mt76u_vendor_request(struct mt76_dev *dev, u8 req,
 751                          u8 req_type, u16 val, u16 offset,
 752                          void *buf, size_t len);
 753 void mt76u_single_wr(struct mt76_dev *dev, const u8 req,
 754                      const u16 offset, const u32 val);
 755 int mt76u_init(struct mt76_dev *dev, struct usb_interface *intf);
 756 int mt76u_submit_rx_buffers(struct mt76_dev *dev);
 757 int mt76u_alloc_queues(struct mt76_dev *dev);
 758 void mt76u_stop_queues(struct mt76_dev *dev);
 759 void mt76u_stop_stat_wk(struct mt76_dev *dev);
 760 void mt76u_queues_deinit(struct mt76_dev *dev);
 761
 762 struct sk_buff *
 763 mt76_mcu_msg_alloc(const void *data, int head_len,
 764                    int data_len, int tail_len);
 765 void mt76_mcu_rx_event(struct mt76_dev *dev, struct sk_buff *skb);
 766 struct sk_buff *mt76_mcu_get_response(struct mt76_dev *dev,
 767                                       unsigned long expires);
 768
 769 #endif