developer | b11a539 | 2022-03-31 00:34:47 +0800 | [diff] [blame] | 1 | // SPDX-License-Identifier: ISC |
| 2 | /* Copyright (C) 2020 MediaTek Inc. |
| 3 | * |
| 4 | * Author: Lorenzo Bianconi <lorenzo@kernel.org> |
| 5 | * Sean Wang <sean.wang@mediatek.com> |
| 6 | */ |
| 7 | |
| 8 | #include <linux/kernel.h> |
| 9 | #include <linux/module.h> |
| 10 | #include <linux/usb.h> |
| 11 | |
| 12 | #include "mt7615.h" |
| 13 | #include "mac.h" |
| 14 | #include "mcu.h" |
| 15 | #include "regs.h" |
| 16 | |
| 17 | const u32 mt7663_usb_sdio_reg_map[] = { |
| 18 | [MT_TOP_CFG_BASE] = 0x80020000, |
| 19 | [MT_HW_BASE] = 0x80000000, |
| 20 | [MT_DMA_SHDL_BASE] = 0x5000a000, |
| 21 | [MT_HIF_BASE] = 0x50000000, |
| 22 | [MT_CSR_BASE] = 0x40000000, |
| 23 | [MT_EFUSE_ADDR_BASE] = 0x78011000, |
| 24 | [MT_TOP_MISC_BASE] = 0x81020000, |
| 25 | [MT_PLE_BASE] = 0x82060000, |
| 26 | [MT_PSE_BASE] = 0x82068000, |
| 27 | [MT_PP_BASE] = 0x8206c000, |
| 28 | [MT_WTBL_BASE_ADDR] = 0x820e0000, |
| 29 | [MT_CFG_BASE] = 0x820f0000, |
| 30 | [MT_AGG_BASE] = 0x820f2000, |
| 31 | [MT_ARB_BASE] = 0x820f3000, |
| 32 | [MT_TMAC_BASE] = 0x820f4000, |
| 33 | [MT_RMAC_BASE] = 0x820f5000, |
| 34 | [MT_DMA_BASE] = 0x820f7000, |
| 35 | [MT_PF_BASE] = 0x820f8000, |
| 36 | [MT_WTBL_BASE_ON] = 0x820f9000, |
| 37 | [MT_WTBL_BASE_OFF] = 0x820f9800, |
| 38 | [MT_LPON_BASE] = 0x820fb000, |
| 39 | [MT_MIB_BASE] = 0x820fd000, |
| 40 | }; |
| 41 | EXPORT_SYMBOL_GPL(mt7663_usb_sdio_reg_map); |
| 42 | |
| 43 | static void |
| 44 | mt7663_usb_sdio_write_txwi(struct mt7615_dev *dev, struct mt76_wcid *wcid, |
| 45 | enum mt76_txq_id qid, struct ieee80211_sta *sta, |
| 46 | struct ieee80211_key_conf *key, int pid, |
| 47 | struct sk_buff *skb) |
| 48 | { |
| 49 | __le32 *txwi = (__le32 *)(skb->data - MT_USB_TXD_SIZE); |
| 50 | |
| 51 | memset(txwi, 0, MT_USB_TXD_SIZE); |
| 52 | mt7615_mac_write_txwi(dev, txwi, skb, wcid, sta, pid, key, false); |
| 53 | skb_push(skb, MT_USB_TXD_SIZE); |
| 54 | } |
| 55 | |
| 56 | static int mt7663_usb_sdio_set_rates(struct mt7615_dev *dev, |
| 57 | struct mt7615_wtbl_rate_desc *wrd) |
| 58 | { |
| 59 | struct mt7615_rate_desc *rate = &wrd->rate; |
| 60 | struct mt7615_sta *sta = wrd->sta; |
| 61 | u32 w5, w27, addr, val; |
| 62 | u16 idx; |
| 63 | |
| 64 | lockdep_assert_held(&dev->mt76.mutex); |
| 65 | |
| 66 | if (!sta) |
| 67 | return -EINVAL; |
| 68 | |
| 69 | if (!mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000)) |
| 70 | return -ETIMEDOUT; |
| 71 | |
| 72 | addr = mt7615_mac_wtbl_addr(dev, sta->wcid.idx); |
| 73 | |
| 74 | w27 = mt76_rr(dev, addr + 27 * 4); |
| 75 | w27 &= ~MT_WTBL_W27_CC_BW_SEL; |
| 76 | w27 |= FIELD_PREP(MT_WTBL_W27_CC_BW_SEL, rate->bw); |
| 77 | |
| 78 | w5 = mt76_rr(dev, addr + 5 * 4); |
| 79 | w5 &= ~(MT_WTBL_W5_BW_CAP | MT_WTBL_W5_CHANGE_BW_RATE | |
| 80 | MT_WTBL_W5_MPDU_OK_COUNT | |
| 81 | MT_WTBL_W5_MPDU_FAIL_COUNT | |
| 82 | MT_WTBL_W5_RATE_IDX); |
| 83 | w5 |= FIELD_PREP(MT_WTBL_W5_BW_CAP, rate->bw) | |
| 84 | FIELD_PREP(MT_WTBL_W5_CHANGE_BW_RATE, |
| 85 | rate->bw_idx ? rate->bw_idx - 1 : 7); |
| 86 | |
| 87 | mt76_wr(dev, MT_WTBL_RIUCR0, w5); |
| 88 | |
| 89 | mt76_wr(dev, MT_WTBL_RIUCR1, |
| 90 | FIELD_PREP(MT_WTBL_RIUCR1_RATE0, rate->probe_val) | |
| 91 | FIELD_PREP(MT_WTBL_RIUCR1_RATE1, rate->val[0]) | |
| 92 | FIELD_PREP(MT_WTBL_RIUCR1_RATE2_LO, rate->val[1])); |
| 93 | |
| 94 | mt76_wr(dev, MT_WTBL_RIUCR2, |
| 95 | FIELD_PREP(MT_WTBL_RIUCR2_RATE2_HI, rate->val[1] >> 8) | |
| 96 | FIELD_PREP(MT_WTBL_RIUCR2_RATE3, rate->val[1]) | |
| 97 | FIELD_PREP(MT_WTBL_RIUCR2_RATE4, rate->val[2]) | |
| 98 | FIELD_PREP(MT_WTBL_RIUCR2_RATE5_LO, rate->val[2])); |
| 99 | |
| 100 | mt76_wr(dev, MT_WTBL_RIUCR3, |
| 101 | FIELD_PREP(MT_WTBL_RIUCR3_RATE5_HI, rate->val[2] >> 4) | |
| 102 | FIELD_PREP(MT_WTBL_RIUCR3_RATE6, rate->val[3]) | |
| 103 | FIELD_PREP(MT_WTBL_RIUCR3_RATE7, rate->val[3])); |
| 104 | |
| 105 | mt76_wr(dev, MT_WTBL_UPDATE, |
| 106 | FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, sta->wcid.idx) | |
| 107 | MT_WTBL_UPDATE_RATE_UPDATE | |
| 108 | MT_WTBL_UPDATE_TX_COUNT_CLEAR); |
| 109 | |
| 110 | mt76_wr(dev, addr + 27 * 4, w27); |
| 111 | |
| 112 | sta->rate_probe = sta->rateset[rate->rateset].probe_rate.idx != -1; |
| 113 | |
| 114 | idx = sta->vif->mt76.omac_idx; |
| 115 | idx = idx > HW_BSSID_MAX ? HW_BSSID_0 : idx; |
| 116 | addr = idx > 1 ? MT_LPON_TCR2(idx): MT_LPON_TCR0(idx); |
| 117 | |
| 118 | mt76_rmw(dev, addr, MT_LPON_TCR_MODE, MT_LPON_TCR_READ); /* TSF read */ |
| 119 | val = mt76_rr(dev, MT_LPON_UTTR0); |
| 120 | sta->rate_set_tsf = (val & ~BIT(0)) | rate->rateset; |
| 121 | |
| 122 | if (!(sta->wcid.tx_info & MT_WCID_TX_INFO_SET)) |
| 123 | mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000); |
| 124 | |
| 125 | sta->rate_count = 2 * MT7615_RATE_RETRY * sta->n_rates; |
| 126 | sta->wcid.tx_info |= MT_WCID_TX_INFO_SET; |
| 127 | |
| 128 | return 0; |
| 129 | } |
| 130 | |
| 131 | static void mt7663_usb_sdio_rate_work(struct work_struct *work) |
| 132 | { |
| 133 | struct mt7615_wtbl_rate_desc *wrd, *wrd_next; |
| 134 | struct list_head wrd_list; |
| 135 | struct mt7615_dev *dev; |
| 136 | |
| 137 | dev = (struct mt7615_dev *)container_of(work, struct mt7615_dev, |
| 138 | rate_work); |
| 139 | |
| 140 | INIT_LIST_HEAD(&wrd_list); |
| 141 | spin_lock_bh(&dev->mt76.lock); |
| 142 | list_splice_init(&dev->wrd_head, &wrd_list); |
| 143 | spin_unlock_bh(&dev->mt76.lock); |
| 144 | |
| 145 | list_for_each_entry_safe(wrd, wrd_next, &wrd_list, node) { |
| 146 | list_del(&wrd->node); |
| 147 | |
| 148 | mt7615_mutex_acquire(dev); |
| 149 | mt7663_usb_sdio_set_rates(dev, wrd); |
| 150 | mt7615_mutex_release(dev); |
| 151 | |
| 152 | kfree(wrd); |
| 153 | } |
| 154 | } |
| 155 | |
| 156 | bool mt7663_usb_sdio_tx_status_data(struct mt76_dev *mdev, u8 *update) |
| 157 | { |
| 158 | struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); |
| 159 | |
| 160 | mt7615_mutex_acquire(dev); |
| 161 | mt7615_mac_sta_poll(dev); |
| 162 | mt7615_mutex_release(dev); |
| 163 | |
| 164 | return false; |
| 165 | } |
| 166 | EXPORT_SYMBOL_GPL(mt7663_usb_sdio_tx_status_data); |
| 167 | |
| 168 | void mt7663_usb_sdio_tx_complete_skb(struct mt76_dev *mdev, |
| 169 | struct mt76_queue_entry *e) |
| 170 | { |
| 171 | unsigned int headroom = MT_USB_TXD_SIZE; |
| 172 | |
| 173 | if (mt76_is_usb(mdev)) |
| 174 | headroom += MT_USB_HDR_SIZE; |
| 175 | skb_pull(e->skb, headroom); |
| 176 | |
| 177 | mt76_tx_complete_skb(mdev, e->wcid, e->skb); |
| 178 | } |
| 179 | EXPORT_SYMBOL_GPL(mt7663_usb_sdio_tx_complete_skb); |
| 180 | |
| 181 | int mt7663_usb_sdio_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, |
| 182 | enum mt76_txq_id qid, struct mt76_wcid *wcid, |
| 183 | struct ieee80211_sta *sta, |
| 184 | struct mt76_tx_info *tx_info) |
| 185 | { |
| 186 | struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); |
| 187 | struct sk_buff *skb = tx_info->skb; |
| 188 | struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); |
| 189 | struct ieee80211_key_conf *key = info->control.hw_key; |
| 190 | struct mt7615_sta *msta; |
| 191 | int pad, err, pktid; |
| 192 | |
| 193 | msta = wcid ? container_of(wcid, struct mt7615_sta, wcid) : NULL; |
| 194 | if (!wcid) |
| 195 | wcid = &dev->mt76.global_wcid; |
| 196 | |
| 197 | if ((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) && |
| 198 | msta && !msta->rate_probe) { |
| 199 | /* request to configure sampling rate */ |
| 200 | spin_lock_bh(&dev->mt76.lock); |
| 201 | mt7615_mac_set_rates(&dev->phy, msta, &info->control.rates[0], |
| 202 | msta->rates); |
| 203 | spin_unlock_bh(&dev->mt76.lock); |
| 204 | } |
| 205 | |
| 206 | pktid = mt76_tx_status_skb_add(&dev->mt76, wcid, skb); |
| 207 | mt7663_usb_sdio_write_txwi(dev, wcid, qid, sta, key, pktid, skb); |
| 208 | if (mt76_is_usb(mdev)) { |
| 209 | u32 len = skb->len; |
| 210 | |
| 211 | put_unaligned_le32(len, skb_push(skb, sizeof(len))); |
| 212 | pad = round_up(skb->len, 4) + 4 - skb->len; |
| 213 | } else { |
| 214 | pad = round_up(skb->len, 4) - skb->len; |
| 215 | } |
| 216 | |
| 217 | err = mt76_skb_adjust_pad(skb, pad); |
| 218 | if (err) |
| 219 | /* Release pktid in case of error. */ |
| 220 | idr_remove(&wcid->pktid, pktid); |
| 221 | |
| 222 | return err; |
| 223 | } |
| 224 | EXPORT_SYMBOL_GPL(mt7663_usb_sdio_tx_prepare_skb); |
| 225 | |
| 226 | static int mt7663u_dma_sched_init(struct mt7615_dev *dev) |
| 227 | { |
| 228 | int i; |
| 229 | |
| 230 | mt76_rmw(dev, MT_DMA_SHDL(MT_DMASHDL_PKT_MAX_SIZE), |
| 231 | MT_DMASHDL_PKT_MAX_SIZE_PLE | MT_DMASHDL_PKT_MAX_SIZE_PSE, |
| 232 | FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PLE, 1) | |
| 233 | FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PSE, 8)); |
| 234 | |
| 235 | /* disable refill group 5 - group 15 and raise group 2 |
| 236 | * and 3 as high priority. |
| 237 | */ |
| 238 | mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_REFILL), 0xffe00006); |
| 239 | mt76_clear(dev, MT_DMA_SHDL(MT_DMASHDL_PAGE), BIT(16)); |
| 240 | |
| 241 | for (i = 0; i < 5; i++) |
| 242 | mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_GROUP_QUOTA(i)), |
| 243 | FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x3) | |
| 244 | FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x1ff)); |
| 245 | |
| 246 | mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(0)), 0x42104210); |
| 247 | mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(1)), 0x42104210); |
| 248 | |
| 249 | mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(2)), 0x4444); |
| 250 | |
| 251 | /* group pririority from high to low: |
| 252 | * 15 (cmd groups) > 4 > 3 > 2 > 1 > 0. |
| 253 | */ |
| 254 | mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_SCHED_SET0), 0x6501234f); |
| 255 | mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_SCHED_SET1), 0xedcba987); |
| 256 | mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_OPTIONAL), 0x7004801c); |
| 257 | |
| 258 | mt76_wr(dev, MT_UDMA_WLCFG_1, |
| 259 | FIELD_PREP(MT_WL_TX_TMOUT_LMT, 80000) | |
| 260 | FIELD_PREP(MT_WL_RX_AGG_PKT_LMT, 1)); |
| 261 | |
| 262 | /* setup UDMA Rx Flush */ |
| 263 | mt76_clear(dev, MT_UDMA_WLCFG_0, MT_WL_RX_FLUSH); |
| 264 | /* hif reset */ |
| 265 | mt76_set(dev, MT_HIF_RST, MT_HIF_LOGIC_RST_N); |
| 266 | |
| 267 | mt76_set(dev, MT_UDMA_WLCFG_0, |
| 268 | MT_WL_RX_AGG_EN | MT_WL_RX_EN | MT_WL_TX_EN | |
| 269 | MT_WL_RX_MPSZ_PAD0 | MT_TICK_1US_EN | |
| 270 | MT_WL_TX_TMOUT_FUNC_EN); |
| 271 | mt76_rmw(dev, MT_UDMA_WLCFG_0, MT_WL_RX_AGG_LMT | MT_WL_RX_AGG_TO, |
| 272 | FIELD_PREP(MT_WL_RX_AGG_LMT, 32) | |
| 273 | FIELD_PREP(MT_WL_RX_AGG_TO, 100)); |
| 274 | |
| 275 | return 0; |
| 276 | } |
| 277 | |
| 278 | static int mt7663_usb_sdio_init_hardware(struct mt7615_dev *dev) |
| 279 | { |
| 280 | int ret, idx; |
| 281 | |
| 282 | ret = mt7615_eeprom_init(dev, MT_EFUSE_BASE); |
| 283 | if (ret < 0) |
| 284 | return ret; |
| 285 | |
| 286 | if (mt76_is_usb(&dev->mt76)) { |
| 287 | ret = mt7663u_dma_sched_init(dev); |
| 288 | if (ret) |
| 289 | return ret; |
| 290 | } |
| 291 | |
| 292 | set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); |
| 293 | |
| 294 | /* Beacon and mgmt frames should occupy wcid 0 */ |
| 295 | idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7615_WTBL_STA - 1); |
| 296 | if (idx) |
| 297 | return -ENOSPC; |
| 298 | |
| 299 | dev->mt76.global_wcid.idx = idx; |
| 300 | dev->mt76.global_wcid.hw_key_idx = -1; |
| 301 | rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid); |
| 302 | |
| 303 | return 0; |
| 304 | } |
| 305 | |
| 306 | int mt7663_usb_sdio_register_device(struct mt7615_dev *dev) |
| 307 | { |
| 308 | struct ieee80211_hw *hw = mt76_hw(dev); |
| 309 | int err; |
| 310 | |
| 311 | INIT_WORK(&dev->rate_work, mt7663_usb_sdio_rate_work); |
| 312 | INIT_LIST_HEAD(&dev->wrd_head); |
| 313 | mt7615_init_device(dev); |
| 314 | |
| 315 | err = mt7663_usb_sdio_init_hardware(dev); |
| 316 | if (err) |
| 317 | return err; |
| 318 | |
| 319 | hw->extra_tx_headroom += MT_USB_TXD_SIZE; |
| 320 | if (mt76_is_usb(&dev->mt76)) { |
| 321 | hw->extra_tx_headroom += MT_USB_HDR_SIZE; |
| 322 | /* check hw sg support in order to enable AMSDU */ |
| 323 | if (dev->mt76.usb.sg_en) |
| 324 | hw->max_tx_fragments = MT_HW_TXP_MAX_BUF_NUM; |
| 325 | else |
| 326 | hw->max_tx_fragments = 1; |
| 327 | } |
| 328 | |
| 329 | err = mt76_register_device(&dev->mt76, true, mt76_rates, |
| 330 | ARRAY_SIZE(mt76_rates)); |
| 331 | if (err < 0) |
| 332 | return err; |
| 333 | |
| 334 | if (!dev->mt76.usb.sg_en) { |
| 335 | struct ieee80211_sta_vht_cap *vht_cap; |
| 336 | |
| 337 | /* decrease max A-MSDU size if SG is not supported */ |
| 338 | vht_cap = &dev->mphy.sband_5g.sband.vht_cap; |
| 339 | vht_cap->cap &= ~IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454; |
| 340 | } |
| 341 | |
| 342 | ieee80211_queue_work(hw, &dev->mcu_work); |
| 343 | mt7615_init_txpower(dev, &dev->mphy.sband_2g.sband); |
| 344 | mt7615_init_txpower(dev, &dev->mphy.sband_5g.sband); |
| 345 | |
| 346 | return mt7615_init_debugfs(dev); |
| 347 | } |
| 348 | EXPORT_SYMBOL_GPL(mt7663_usb_sdio_register_device); |
| 349 | |
| 350 | MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>"); |
| 351 | MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); |
| 352 | MODULE_LICENSE("Dual BSD/GPL"); |