2 * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
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.
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.
20 #include <linux/kernel.h>
22 #include <linux/spinlock.h>
23 #include <linux/skbuff.h>
24 #include <linux/leds.h>
25 #include <net/mac80211.h>
28 #define MT_TX_RING_SIZE 256
29 #define MT_MCU_RING_SIZE 32
30 #define MT_RX_BUF_SIZE 2048
35 u32 (*rr)(struct mt76_dev *dev, u32 offset);
36 void (*wr)(struct mt76_dev *dev, u32 offset, u32 val);
37 u32 (*rmw)(struct mt76_dev *dev, u32 offset, u32 mask, u32 val);
38 void (*copy)(struct mt76_dev *dev, u32 offset, const void *data,
43 MT_TXQ_VO = IEEE80211_AC_VO,
44 MT_TXQ_VI = IEEE80211_AC_VI,
45 MT_TXQ_BE = IEEE80211_AC_BE,
46 MT_TXQ_BK = IEEE80211_AC_BK,
60 struct mt76_queue_buf {
65 struct mt76_queue_entry {
70 struct mt76_txwi_cache *txwi;
74 struct mt76_queue_regs {
79 } __packed __aligned(4);
82 struct mt76_queue_regs __iomem *regs;
85 struct mt76_queue_entry *entry;
86 struct mt76_desc *desc;
101 struct sk_buff *rx_head;
104 struct mt76_queue_ops {
105 int (*init)(struct mt76_dev *dev);
107 int (*alloc)(struct mt76_dev *dev, struct mt76_queue *q);
109 int (*add_buf)(struct mt76_dev *dev, struct mt76_queue *q,
110 struct mt76_queue_buf *buf, int nbufs, u32 info,
111 struct sk_buff *skb, void *txwi);
113 void *(*dequeue)(struct mt76_dev *dev, struct mt76_queue *q, bool flush,
114 int *len, u32 *info, bool *more);
116 void (*rx_reset)(struct mt76_dev *dev, enum mt76_rxq_id qid);
118 void (*tx_cleanup)(struct mt76_dev *dev, enum mt76_txq_id qid,
121 void (*kick)(struct mt76_dev *dev, struct mt76_queue *q);
124 enum mt76_wcid_flags {
125 MT_WCID_FLAG_CHECK_PS,
130 struct mt76_rx_tid __rcu *aggr[IEEE80211_NUM_TIDS];
132 struct work_struct aggr_work;
142 u8 rx_key_pn[IEEE80211_NUM_TIDS][6];
152 struct list_head list;
153 struct mt76_queue *hwq;
154 struct mt76_wcid *wcid;
156 struct sk_buff_head retry_q;
163 struct mt76_txwi_cache {
166 struct list_head list;
171 struct rcu_head rcu_head;
173 struct mt76_dev *dev;
176 struct delayed_work reorder_work;
182 u8 started:1, stopped:1, timer_pending:1;
184 struct sk_buff *reorder_buf[];
188 MT76_STATE_INITIALIZED,
199 struct mt76_driver_ops {
202 void (*update_survey)(struct mt76_dev *dev);
204 int (*tx_prepare_skb)(struct mt76_dev *dev, void *txwi_ptr,
205 struct sk_buff *skb, struct mt76_queue *q,
206 struct mt76_wcid *wcid,
207 struct ieee80211_sta *sta, u32 *tx_info);
209 void (*tx_complete_skb)(struct mt76_dev *dev, struct mt76_queue *q,
210 struct mt76_queue_entry *e, bool flush);
212 void (*rx_skb)(struct mt76_dev *dev, enum mt76_rxq_id q,
213 struct sk_buff *skb);
215 void (*rx_poll_complete)(struct mt76_dev *dev, enum mt76_rxq_id q);
217 void (*sta_ps)(struct mt76_dev *dev, struct ieee80211_sta *sta,
221 struct mt76_channel_state {
227 struct ieee80211_supported_band sband;
228 struct mt76_channel_state *chan;
232 struct ieee80211_hw *hw;
233 struct cfg80211_chan_def chandef;
234 struct ieee80211_channel *main_chan;
238 const struct mt76_bus_ops *bus;
239 const struct mt76_driver_ops *drv;
243 struct net_device napi_dev;
244 struct napi_struct napi[__MT_RXQ_MAX];
245 struct sk_buff_head rx_skb[__MT_RXQ_MAX];
247 struct list_head txwi_cache;
248 struct mt76_queue q_tx[__MT_TXQ_MAX];
249 struct mt76_queue q_rx[__MT_RXQ_MAX];
250 const struct mt76_queue_ops *queue_ops;
252 u8 macaddr[ETH_ALEN];
256 struct mt76_sband sband_2g;
257 struct mt76_sband sband_5g;
258 struct debugfs_blob_wrapper eeprom;
259 struct debugfs_blob_wrapper otp;
260 struct mt76_hw_cap cap;
264 struct led_classdev led_cdev;
278 struct mt76_rate_power {
290 struct mt76_rx_status {
291 struct mt76_wcid *wcid;
293 unsigned long reorder_time;
310 s8 chain_signal[IEEE80211_MAX_CHAINS];
313 #define mt76_rr(dev, ...) (dev)->mt76.bus->rr(&((dev)->mt76), __VA_ARGS__)
314 #define mt76_wr(dev, ...) (dev)->mt76.bus->wr(&((dev)->mt76), __VA_ARGS__)
315 #define mt76_rmw(dev, ...) (dev)->mt76.bus->rmw(&((dev)->mt76), __VA_ARGS__)
316 #define mt76_wr_copy(dev, ...) (dev)->mt76.bus->copy(&((dev)->mt76), __VA_ARGS__)
318 #define mt76_set(dev, offset, val) mt76_rmw(dev, offset, 0, val)
319 #define mt76_clear(dev, offset, val) mt76_rmw(dev, offset, val, 0)
321 #define mt76_get_field(_dev, _reg, _field) \
322 FIELD_GET(_field, mt76_rr(dev, _reg))
324 #define mt76_rmw_field(_dev, _reg, _field, _val) \
325 mt76_rmw(_dev, _reg, _field, FIELD_PREP(_field, _val))
327 #define mt76_hw(dev) (dev)->mt76.hw
329 bool __mt76_poll(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
332 #define mt76_poll(dev, ...) __mt76_poll(&((dev)->mt76), __VA_ARGS__)
334 bool __mt76_poll_msec(struct mt76_dev *dev, u32 offset, u32 mask, u32 val,
337 #define mt76_poll_msec(dev, ...) __mt76_poll_msec(&((dev)->mt76), __VA_ARGS__)
339 void mt76_mmio_init(struct mt76_dev *dev, void __iomem *regs);
341 static inline u16 mt76_chip(struct mt76_dev *dev)
343 return dev->rev >> 16;
346 static inline u16 mt76_rev(struct mt76_dev *dev)
348 return dev->rev & 0xffff;
351 #define mt76xx_chip(dev) mt76_chip(&((dev)->mt76))
352 #define mt76xx_rev(dev) mt76_rev(&((dev)->mt76))
354 #define mt76_init_queues(dev) (dev)->mt76.queue_ops->init(&((dev)->mt76))
355 #define mt76_queue_alloc(dev, ...) (dev)->mt76.queue_ops->alloc(&((dev)->mt76), __VA_ARGS__)
356 #define mt76_queue_add_buf(dev, ...) (dev)->mt76.queue_ops->add_buf(&((dev)->mt76), __VA_ARGS__)
357 #define mt76_queue_rx_reset(dev, ...) (dev)->mt76.queue_ops->rx_reset(&((dev)->mt76), __VA_ARGS__)
358 #define mt76_queue_tx_cleanup(dev, ...) (dev)->mt76.queue_ops->tx_cleanup(&((dev)->mt76), __VA_ARGS__)
359 #define mt76_queue_kick(dev, ...) (dev)->mt76.queue_ops->kick(&((dev)->mt76), __VA_ARGS__)
361 static inline struct mt76_channel_state *
362 mt76_channel_state(struct mt76_dev *dev, struct ieee80211_channel *c)
364 struct mt76_sband *msband;
367 if (c->band == NL80211_BAND_2GHZ)
368 msband = &dev->sband_2g;
370 msband = &dev->sband_5g;
372 idx = c - &msband->sband.channels[0];
373 return &msband->chan[idx];
376 int mt76_register_device(struct mt76_dev *dev, bool vht,
377 struct ieee80211_rate *rates, int n_rates);
378 void mt76_unregister_device(struct mt76_dev *dev);
380 struct dentry *mt76_register_debugfs(struct mt76_dev *dev);
382 int mt76_eeprom_init(struct mt76_dev *dev, int len);
383 void mt76_eeprom_override(struct mt76_dev *dev);
385 static inline struct ieee80211_txq *
386 mtxq_to_txq(struct mt76_txq *mtxq)
390 return container_of(ptr, struct ieee80211_txq, drv_priv);
393 static inline struct ieee80211_sta *
394 wcid_to_sta(struct mt76_wcid *wcid)
398 if (!wcid || !wcid->sta)
401 return container_of(ptr, struct ieee80211_sta, drv_priv);
404 int mt76_tx_queue_skb(struct mt76_dev *dev, struct mt76_queue *q,
405 struct sk_buff *skb, struct mt76_wcid *wcid,
406 struct ieee80211_sta *sta);
408 void mt76_rx(struct mt76_dev *dev, enum mt76_rxq_id q, struct sk_buff *skb);
409 void mt76_tx(struct mt76_dev *dev, struct ieee80211_sta *sta,
410 struct mt76_wcid *wcid, struct sk_buff *skb);
411 void mt76_txq_init(struct mt76_dev *dev, struct ieee80211_txq *txq);
412 void mt76_txq_remove(struct mt76_dev *dev, struct ieee80211_txq *txq);
413 void mt76_wake_tx_queue(struct ieee80211_hw *hw, struct ieee80211_txq *txq);
414 void mt76_stop_tx_queues(struct mt76_dev *dev, struct ieee80211_sta *sta,
416 void mt76_txq_schedule(struct mt76_dev *dev, struct mt76_queue *hwq);
417 void mt76_txq_schedule_all(struct mt76_dev *dev);
418 void mt76_release_buffered_frames(struct ieee80211_hw *hw,
419 struct ieee80211_sta *sta,
420 u16 tids, int nframes,
421 enum ieee80211_frame_release_type reason,
423 void mt76_set_channel(struct mt76_dev *dev);
424 int mt76_get_survey(struct ieee80211_hw *hw, int idx,
425 struct survey_info *survey);
427 int mt76_rx_aggr_start(struct mt76_dev *dev, struct mt76_wcid *wcid, u8 tid,
429 void mt76_rx_aggr_stop(struct mt76_dev *dev, struct mt76_wcid *wcid, u8 tid);
431 void mt76_wcid_key_setup(struct mt76_dev *dev, struct mt76_wcid *wcid,
432 struct ieee80211_key_conf *key);
435 void mt76_tx_free(struct mt76_dev *dev);
436 void mt76_put_txwi(struct mt76_dev *dev, struct mt76_txwi_cache *t);
437 void mt76_rx_complete(struct mt76_dev *dev, struct sk_buff_head *frames,
439 void mt76_rx_poll_complete(struct mt76_dev *dev, enum mt76_rxq_id q);
440 void mt76_rx_aggr_reorder(struct sk_buff *skb, struct sk_buff_head *frames);