1 /* 2 * Copyright (C) 2014 Felix Fietkau <nbd@openwrt.org> 3 * Copyright (C) 2015 Jakub Kicinski <kubakici@wp.pl> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 7 * as published by the Free Software Foundation 8 * 9 * This program is distributed in the hope that it will be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 */ 14 15 #ifndef MT7601U_H 16 #define MT7601U_H 17 18 #include <linux/kernel.h> 19 #include <linux/device.h> 20 #include <linux/mutex.h> 21 #include <linux/usb.h> 22 #include <linux/completion.h> 23 #include <net/mac80211.h> 24 #include <linux/debugfs.h> 25 26 #include "regs.h" 27 #include "util.h" 28 29 #define MT_CALIBRATE_INTERVAL (4 * HZ) 30 31 #define MT_FREQ_CAL_INIT_DELAY (30 * HZ) 32 #define MT_FREQ_CAL_CHECK_INTERVAL (10 * HZ) 33 #define MT_FREQ_CAL_ADJ_INTERVAL (HZ / 2) 34 35 #define MT_BBP_REG_VERSION 0x00 36 37 #define MT_USB_AGGR_SIZE_LIMIT 28 /* * 1024B */ 38 #define MT_USB_AGGR_TIMEOUT 0x80 /* * 33ns */ 39 #define MT_RX_ORDER 3 40 #define MT_RX_URB_SIZE (PAGE_SIZE << MT_RX_ORDER) 41 42 struct mt7601u_dma_buf { 43 struct urb *urb; 44 void *buf; 45 dma_addr_t dma; 46 size_t len; 47 }; 48 49 struct mt7601u_mcu { 50 struct mutex mutex; 51 52 u8 msg_seq; 53 54 struct mt7601u_dma_buf resp; 55 struct completion resp_cmpl; 56 }; 57 58 struct mt7601u_freq_cal { 59 struct delayed_work work; 60 u8 freq; 61 bool enabled; 62 bool adjusting; 63 }; 64 65 struct mac_stats { 66 u64 rx_stat[6]; 67 u64 tx_stat[6]; 68 u64 aggr_stat[2]; 69 u64 aggr_n[32]; 70 u64 zero_len_del[2]; 71 }; 72 73 #define N_RX_ENTRIES 16 74 struct mt7601u_rx_queue { 75 struct mt7601u_dev *dev; 76 77 struct mt7601u_dma_buf_rx { 78 struct urb *urb; 79 struct page *p; 80 } e[N_RX_ENTRIES]; 81 82 unsigned int start; 83 unsigned int end; 84 unsigned int entries; 85 unsigned int pending; 86 }; 87 88 #define N_TX_ENTRIES 64 89 90 struct mt7601u_tx_queue { 91 struct mt7601u_dev *dev; 92 93 struct mt7601u_dma_buf_tx { 94 struct urb *urb; 95 struct sk_buff *skb; 96 } e[N_TX_ENTRIES]; 97 98 unsigned int start; 99 unsigned int end; 100 unsigned int entries; 101 unsigned int used; 102 unsigned int fifo_seq; 103 }; 104 105 /* WCID allocation: 106 * 0: mcast wcid 107 * 1: bssid wcid 108 * 1...: STAs 109 * ...7e: group wcids 110 * 7f: reserved 111 */ 112 #define N_WCIDS 128 113 #define GROUP_WCID(idx) (N_WCIDS - 2 - idx) 114 115 struct mt7601u_eeprom_params; 116 117 #define MT_EE_TEMPERATURE_SLOPE 39 118 #define MT_FREQ_OFFSET_INVALID -128 119 120 enum mt_temp_mode { 121 MT_TEMP_MODE_NORMAL, 122 MT_TEMP_MODE_HIGH, 123 MT_TEMP_MODE_LOW, 124 }; 125 126 enum mt_bw { 127 MT_BW_20, 128 MT_BW_40, 129 }; 130 131 enum { 132 MT7601U_STATE_INITIALIZED, 133 MT7601U_STATE_REMOVED, 134 MT7601U_STATE_WLAN_RUNNING, 135 MT7601U_STATE_MCU_RUNNING, 136 MT7601U_STATE_SCANNING, 137 MT7601U_STATE_READING_STATS, 138 MT7601U_STATE_MORE_STATS, 139 }; 140 141 /** 142 * struct mt7601u_dev - adapter structure 143 * @lock: protects @wcid->tx_rate. 144 * @mac_lock: locks out mac80211's tx status and rx paths. 145 * @tx_lock: protects @tx_q and changes of MT7601U_STATE_*_STATS 146 * flags in @state. 147 * @rx_lock: protects @rx_q. 148 * @con_mon_lock: protects @ap_bssid, @bcn_*, @avg_rssi. 149 * @mutex: ensures exclusive access from mac80211 callbacks. 150 * @vendor_req_mutex: protects @vend_buf, ensures atomicity of split writes. 151 * @reg_atomic_mutex: ensures atomicity of indirect register accesses 152 * (accesses to RF and BBP). 153 * @hw_atomic_mutex: ensures exclusive access to HW during critical 154 * operations (power management, channel switch). 155 */ 156 struct mt7601u_dev { 157 struct ieee80211_hw *hw; 158 struct device *dev; 159 160 unsigned long state; 161 162 struct mutex mutex; 163 164 unsigned long wcid_mask[N_WCIDS / BITS_PER_LONG]; 165 166 struct cfg80211_chan_def chandef; 167 struct ieee80211_supported_band *sband_2g; 168 169 struct mt7601u_mcu mcu; 170 171 struct delayed_work cal_work; 172 struct delayed_work mac_work; 173 174 struct workqueue_struct *stat_wq; 175 struct delayed_work stat_work; 176 177 struct mt76_wcid *mon_wcid; 178 struct mt76_wcid __rcu *wcid[N_WCIDS]; 179 180 spinlock_t lock; 181 spinlock_t mac_lock; 182 183 const u16 *beacon_offsets; 184 185 u8 macaddr[ETH_ALEN]; 186 struct mt7601u_eeprom_params *ee; 187 188 struct mutex vendor_req_mutex; 189 void *vend_buf; 190 191 struct mutex reg_atomic_mutex; 192 struct mutex hw_atomic_mutex; 193 194 u32 rxfilter; 195 u32 debugfs_reg; 196 197 u8 out_eps[8]; 198 u8 in_eps[8]; 199 u16 out_max_packet; 200 u16 in_max_packet; 201 202 /* TX */ 203 spinlock_t tx_lock; 204 struct tasklet_struct tx_tasklet; 205 struct mt7601u_tx_queue *tx_q; 206 struct sk_buff_head tx_skb_done; 207 208 atomic_t avg_ampdu_len; 209 210 /* RX */ 211 spinlock_t rx_lock; 212 struct tasklet_struct rx_tasklet; 213 struct mt7601u_rx_queue rx_q; 214 215 /* Connection monitoring things */ 216 spinlock_t con_mon_lock; 217 u8 ap_bssid[ETH_ALEN]; 218 219 s8 bcn_freq_off; 220 u8 bcn_phy_mode; 221 222 int avg_rssi; /* starts at 0 and converges */ 223 224 u8 agc_save; 225 226 struct mt7601u_freq_cal freq_cal; 227 228 bool tssi_read_trig; 229 230 s8 tssi_init; 231 s8 tssi_init_hvga; 232 s16 tssi_init_hvga_offset_db; 233 234 int prev_pwr_diff; 235 236 enum mt_temp_mode temp_mode; 237 int curr_temp; 238 int dpd_temp; 239 s8 raw_temp; 240 bool pll_lock_protect; 241 242 u8 bw; 243 bool chan_ext_below; 244 245 /* PA mode */ 246 u32 rf_pa_mode[2]; 247 248 struct mac_stats stats; 249 }; 250 251 struct mt7601u_tssi_params { 252 char tssi0; 253 int trgt_power; 254 }; 255 256 struct mt76_wcid { 257 u8 idx; 258 u8 hw_key_idx; 259 260 u16 tx_rate; 261 bool tx_rate_set; 262 u8 tx_rate_nss; 263 }; 264 265 struct mt76_vif { 266 u8 idx; 267 268 struct mt76_wcid group_wcid; 269 }; 270 271 struct mt76_sta { 272 struct mt76_wcid wcid; 273 u16 agg_ssn[IEEE80211_NUM_TIDS]; 274 }; 275 276 struct mt76_reg_pair { 277 u32 reg; 278 u32 value; 279 }; 280 281 struct mt7601u_rxwi; 282 283 extern const struct ieee80211_ops mt7601u_ops; 284 285 void mt7601u_init_debugfs(struct mt7601u_dev *dev); 286 287 u32 mt7601u_rr(struct mt7601u_dev *dev, u32 offset); 288 void mt7601u_wr(struct mt7601u_dev *dev, u32 offset, u32 val); 289 u32 mt7601u_rmw(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val); 290 u32 mt7601u_rmc(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val); 291 void mt7601u_wr_copy(struct mt7601u_dev *dev, u32 offset, 292 const void *data, int len); 293 294 int mt7601u_wait_asic_ready(struct mt7601u_dev *dev); 295 bool mt76_poll(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val, 296 int timeout); 297 bool mt76_poll_msec(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val, 298 int timeout); 299 300 /* Compatibility with mt76 */ 301 #define mt76_rmw_field(_dev, _reg, _field, _val) \ 302 mt76_rmw(_dev, _reg, _field, MT76_SET(_field, _val)) 303 304 static inline u32 mt76_rr(struct mt7601u_dev *dev, u32 offset) 305 { 306 return mt7601u_rr(dev, offset); 307 } 308 309 static inline void mt76_wr(struct mt7601u_dev *dev, u32 offset, u32 val) 310 { 311 return mt7601u_wr(dev, offset, val); 312 } 313 314 static inline u32 315 mt76_rmw(struct mt7601u_dev *dev, u32 offset, u32 mask, u32 val) 316 { 317 return mt7601u_rmw(dev, offset, mask, val); 318 } 319 320 static inline u32 mt76_set(struct mt7601u_dev *dev, u32 offset, u32 val) 321 { 322 return mt76_rmw(dev, offset, 0, val); 323 } 324 325 static inline u32 mt76_clear(struct mt7601u_dev *dev, u32 offset, u32 val) 326 { 327 return mt76_rmw(dev, offset, val, 0); 328 } 329 330 int mt7601u_write_reg_pairs(struct mt7601u_dev *dev, u32 base, 331 const struct mt76_reg_pair *data, int len); 332 int mt7601u_burst_write_regs(struct mt7601u_dev *dev, u32 offset, 333 const u32 *data, int n); 334 void mt7601u_addr_wr(struct mt7601u_dev *dev, const u32 offset, const u8 *addr); 335 336 /* Init */ 337 struct mt7601u_dev *mt7601u_alloc_device(struct device *dev); 338 int mt7601u_init_hardware(struct mt7601u_dev *dev); 339 int mt7601u_register_device(struct mt7601u_dev *dev); 340 void mt7601u_cleanup(struct mt7601u_dev *dev); 341 342 int mt7601u_mac_start(struct mt7601u_dev *dev); 343 void mt7601u_mac_stop(struct mt7601u_dev *dev); 344 345 /* PHY */ 346 int mt7601u_phy_init(struct mt7601u_dev *dev); 347 int mt7601u_wait_bbp_ready(struct mt7601u_dev *dev); 348 void mt7601u_set_rx_path(struct mt7601u_dev *dev, u8 path); 349 void mt7601u_set_tx_dac(struct mt7601u_dev *dev, u8 path); 350 int mt7601u_bbp_set_bw(struct mt7601u_dev *dev, int bw); 351 void mt7601u_agc_save(struct mt7601u_dev *dev); 352 void mt7601u_agc_restore(struct mt7601u_dev *dev); 353 int mt7601u_phy_set_channel(struct mt7601u_dev *dev, 354 struct cfg80211_chan_def *chandef); 355 void mt7601u_phy_recalibrate_after_assoc(struct mt7601u_dev *dev); 356 int mt7601u_phy_get_rssi(struct mt7601u_dev *dev, 357 struct mt7601u_rxwi *rxwi, u16 rate); 358 void mt7601u_phy_con_cal_onoff(struct mt7601u_dev *dev, 359 struct ieee80211_bss_conf *info); 360 361 /* MAC */ 362 void mt7601u_mac_work(struct work_struct *work); 363 void mt7601u_mac_set_protection(struct mt7601u_dev *dev, bool legacy_prot, 364 int ht_mode); 365 void mt7601u_mac_set_short_preamble(struct mt7601u_dev *dev, bool short_preamb); 366 void mt7601u_mac_config_tsf(struct mt7601u_dev *dev, bool enable, int interval); 367 void 368 mt7601u_mac_wcid_setup(struct mt7601u_dev *dev, u8 idx, u8 vif_idx, u8 *mac); 369 void mt7601u_mac_set_ampdu_factor(struct mt7601u_dev *dev); 370 371 /* TX */ 372 void mt7601u_tx(struct ieee80211_hw *hw, struct ieee80211_tx_control *control, 373 struct sk_buff *skb); 374 int mt7601u_conf_tx(struct ieee80211_hw *hw, struct ieee80211_vif *vif, 375 u16 queue, const struct ieee80211_tx_queue_params *params); 376 void mt7601u_tx_status(struct mt7601u_dev *dev, struct sk_buff *skb); 377 void mt7601u_tx_stat(struct work_struct *work); 378 379 /* util */ 380 void mt76_remove_hdr_pad(struct sk_buff *skb); 381 int mt76_insert_hdr_pad(struct sk_buff *skb); 382 383 u32 mt7601u_bbp_set_ctrlch(struct mt7601u_dev *dev, bool below); 384 385 static inline u32 mt7601u_mac_set_ctrlch(struct mt7601u_dev *dev, bool below) 386 { 387 return mt7601u_rmc(dev, MT_TX_BAND_CFG, 1, below); 388 } 389 390 int mt7601u_dma_init(struct mt7601u_dev *dev); 391 void mt7601u_dma_cleanup(struct mt7601u_dev *dev); 392 393 int mt7601u_dma_enqueue_tx(struct mt7601u_dev *dev, struct sk_buff *skb, 394 struct mt76_wcid *wcid, int hw_q); 395 396 #endif 397