diff options
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt7615/usb_sdio.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt7615/usb_sdio.c | 402 |
1 files changed, 402 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt7615/usb_sdio.c b/drivers/net/wireless/mediatek/mt76/mt7615/usb_sdio.c new file mode 100644 index 000000000..18082b4ce --- /dev/null +++ b/drivers/net/wireless/mediatek/mt76/mt7615/usb_sdio.c @@ -0,0 +1,402 @@ +// SPDX-License-Identifier: ISC +/* Copyright (C) 2020 MediaTek Inc. + * + * Author: Lorenzo Bianconi <lorenzo@kernel.org> + * Sean Wang <sean.wang@mediatek.com> + */ + +#include <linux/kernel.h> +#include <linux/module.h> +#include <linux/usb.h> + +#include "mt7615.h" +#include "mac.h" +#include "mcu.h" +#include "regs.h" + +const u32 mt7663_usb_sdio_reg_map[] = { + [MT_TOP_CFG_BASE] = 0x80020000, + [MT_HW_BASE] = 0x80000000, + [MT_DMA_SHDL_BASE] = 0x5000a000, + [MT_HIF_BASE] = 0x50000000, + [MT_CSR_BASE] = 0x40000000, + [MT_EFUSE_ADDR_BASE] = 0x78011000, + [MT_TOP_MISC_BASE] = 0x81020000, + [MT_PLE_BASE] = 0x82060000, + [MT_PSE_BASE] = 0x82068000, + [MT_PP_BASE] = 0x8206c000, + [MT_WTBL_BASE_ADDR] = 0x820e0000, + [MT_CFG_BASE] = 0x820f0000, + [MT_AGG_BASE] = 0x820f2000, + [MT_ARB_BASE] = 0x820f3000, + [MT_TMAC_BASE] = 0x820f4000, + [MT_RMAC_BASE] = 0x820f5000, + [MT_DMA_BASE] = 0x820f7000, + [MT_PF_BASE] = 0x820f8000, + [MT_WTBL_BASE_ON] = 0x820f9000, + [MT_WTBL_BASE_OFF] = 0x820f9800, + [MT_LPON_BASE] = 0x820fb000, + [MT_MIB_BASE] = 0x820fd000, +}; +EXPORT_SYMBOL_GPL(mt7663_usb_sdio_reg_map); + +static void +mt7663_usb_sdio_write_txwi(struct mt7615_dev *dev, struct mt76_wcid *wcid, + enum mt76_txq_id qid, struct ieee80211_sta *sta, + struct sk_buff *skb) +{ + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_key_conf *key = info->control.hw_key; + __le32 *txwi; + int pid; + + if (!wcid) + wcid = &dev->mt76.global_wcid; + + pid = mt76_tx_status_skb_add(&dev->mt76, wcid, skb); + + txwi = (__le32 *)(skb->data - MT_USB_TXD_SIZE); + memset(txwi, 0, MT_USB_TXD_SIZE); + mt7615_mac_write_txwi(dev, txwi, skb, wcid, sta, pid, key, false); + skb_push(skb, MT_USB_TXD_SIZE); +} + +static int +mt7663_usb_sdio_set_rates(struct mt7615_dev *dev, + struct mt7615_wtbl_desc *wd) +{ + struct mt7615_rate_desc *rate = &wd->rate; + struct mt7615_sta *sta = wd->sta; + u32 w5, w27, addr, val; + + lockdep_assert_held(&dev->mt76.mutex); + + if (!sta) + return -EINVAL; + + if (!mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000)) + return -ETIMEDOUT; + + addr = mt7615_mac_wtbl_addr(dev, sta->wcid.idx); + + w27 = mt76_rr(dev, addr + 27 * 4); + w27 &= ~MT_WTBL_W27_CC_BW_SEL; + w27 |= FIELD_PREP(MT_WTBL_W27_CC_BW_SEL, rate->bw); + + w5 = mt76_rr(dev, addr + 5 * 4); + w5 &= ~(MT_WTBL_W5_BW_CAP | MT_WTBL_W5_CHANGE_BW_RATE | + MT_WTBL_W5_MPDU_OK_COUNT | + MT_WTBL_W5_MPDU_FAIL_COUNT | + MT_WTBL_W5_RATE_IDX); + w5 |= FIELD_PREP(MT_WTBL_W5_BW_CAP, rate->bw) | + FIELD_PREP(MT_WTBL_W5_CHANGE_BW_RATE, + rate->bw_idx ? rate->bw_idx - 1 : 7); + + mt76_wr(dev, MT_WTBL_RIUCR0, w5); + + mt76_wr(dev, MT_WTBL_RIUCR1, + FIELD_PREP(MT_WTBL_RIUCR1_RATE0, rate->probe_val) | + FIELD_PREP(MT_WTBL_RIUCR1_RATE1, rate->val[0]) | + FIELD_PREP(MT_WTBL_RIUCR1_RATE2_LO, rate->val[1])); + + mt76_wr(dev, MT_WTBL_RIUCR2, + FIELD_PREP(MT_WTBL_RIUCR2_RATE2_HI, rate->val[1] >> 8) | + FIELD_PREP(MT_WTBL_RIUCR2_RATE3, rate->val[1]) | + FIELD_PREP(MT_WTBL_RIUCR2_RATE4, rate->val[2]) | + FIELD_PREP(MT_WTBL_RIUCR2_RATE5_LO, rate->val[2])); + + mt76_wr(dev, MT_WTBL_RIUCR3, + FIELD_PREP(MT_WTBL_RIUCR3_RATE5_HI, rate->val[2] >> 4) | + FIELD_PREP(MT_WTBL_RIUCR3_RATE6, rate->val[3]) | + FIELD_PREP(MT_WTBL_RIUCR3_RATE7, rate->val[3])); + + mt76_wr(dev, MT_WTBL_UPDATE, + FIELD_PREP(MT_WTBL_UPDATE_WLAN_IDX, sta->wcid.idx) | + MT_WTBL_UPDATE_RATE_UPDATE | + MT_WTBL_UPDATE_TX_COUNT_CLEAR); + + mt76_wr(dev, addr + 27 * 4, w27); + + sta->rate_probe = sta->rateset[rate->rateset].probe_rate.idx != -1; + + mt76_set(dev, MT_LPON_T0CR, MT_LPON_T0CR_MODE); /* TSF read */ + val = mt76_rr(dev, MT_LPON_UTTR0); + sta->rate_set_tsf = (val & ~BIT(0)) | rate->rateset; + + if (!(sta->wcid.tx_info & MT_WCID_TX_INFO_SET)) + mt76_poll(dev, MT_WTBL_UPDATE, MT_WTBL_UPDATE_BUSY, 0, 5000); + + sta->rate_count = 2 * MT7615_RATE_RETRY * sta->n_rates; + sta->wcid.tx_info |= MT_WCID_TX_INFO_SET; + + return 0; +} + +static int +mt7663_usb_sdio_set_key(struct mt7615_dev *dev, + struct mt7615_wtbl_desc *wd) +{ + struct mt7615_key_desc *key = &wd->key; + struct mt7615_sta *sta = wd->sta; + enum mt7615_cipher_type cipher; + struct mt76_wcid *wcid; + int err; + + lockdep_assert_held(&dev->mt76.mutex); + + if (!sta) { + err = -EINVAL; + goto out; + } + + cipher = mt7615_mac_get_cipher(key->cipher); + if (cipher == MT_CIPHER_NONE) { + err = -EOPNOTSUPP; + goto out; + } + + wcid = &wd->sta->wcid; + + mt7615_mac_wtbl_update_cipher(dev, wcid, cipher, key->cmd); + err = mt7615_mac_wtbl_update_key(dev, wcid, key->key, key->keylen, + cipher, key->cmd); + if (err < 0) + goto out; + + err = mt7615_mac_wtbl_update_pk(dev, wcid, cipher, key->keyidx, + key->cmd); + if (err < 0) + goto out; + + if (key->cmd == SET_KEY) + wcid->cipher |= BIT(cipher); + else + wcid->cipher &= ~BIT(cipher); +out: + kfree(key->key); + + return err; +} + +void mt7663_usb_sdio_wtbl_work(struct work_struct *work) +{ + struct mt7615_wtbl_desc *wd, *wd_next; + struct list_head wd_list; + struct mt7615_dev *dev; + + dev = (struct mt7615_dev *)container_of(work, struct mt7615_dev, + wtbl_work); + + INIT_LIST_HEAD(&wd_list); + spin_lock_bh(&dev->mt76.lock); + list_splice_init(&dev->wd_head, &wd_list); + spin_unlock_bh(&dev->mt76.lock); + + list_for_each_entry_safe(wd, wd_next, &wd_list, node) { + list_del(&wd->node); + + mt7615_mutex_acquire(dev); + + switch (wd->type) { + case MT7615_WTBL_RATE_DESC: + mt7663_usb_sdio_set_rates(dev, wd); + break; + case MT7615_WTBL_KEY_DESC: + mt7663_usb_sdio_set_key(dev, wd); + break; + } + + mt7615_mutex_release(dev); + + kfree(wd); + } +} +EXPORT_SYMBOL_GPL(mt7663_usb_sdio_wtbl_work); + +bool mt7663_usb_sdio_tx_status_data(struct mt76_dev *mdev, u8 *update) +{ + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + + mt7615_mutex_acquire(dev); + mt7615_mac_sta_poll(dev); + mt7615_mutex_release(dev); + + return 0; +} +EXPORT_SYMBOL_GPL(mt7663_usb_sdio_tx_status_data); + +void mt7663_usb_sdio_tx_complete_skb(struct mt76_dev *mdev, + struct mt76_queue_entry *e) +{ + unsigned int headroom = MT_USB_TXD_SIZE; + + if (mt76_is_usb(mdev)) + headroom += MT_USB_HDR_SIZE; + skb_pull(e->skb, headroom); + + mt76_tx_complete_skb(mdev, e->wcid, e->skb); +} +EXPORT_SYMBOL_GPL(mt7663_usb_sdio_tx_complete_skb); + +int mt7663_usb_sdio_tx_prepare_skb(struct mt76_dev *mdev, void *txwi_ptr, + enum mt76_txq_id qid, struct mt76_wcid *wcid, + struct ieee80211_sta *sta, + struct mt76_tx_info *tx_info) +{ + struct mt7615_dev *dev = container_of(mdev, struct mt7615_dev, mt76); + struct sk_buff *skb = tx_info->skb; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct mt7615_sta *msta; + int pad; + + msta = wcid ? container_of(wcid, struct mt7615_sta, wcid) : NULL; + if ((info->flags & IEEE80211_TX_CTL_RATE_CTRL_PROBE) && + msta && !msta->rate_probe) { + /* request to configure sampling rate */ + spin_lock_bh(&dev->mt76.lock); + mt7615_mac_set_rates(&dev->phy, msta, &info->control.rates[0], + msta->rates); + spin_unlock_bh(&dev->mt76.lock); + } + + mt7663_usb_sdio_write_txwi(dev, wcid, qid, sta, skb); + if (mt76_is_usb(mdev)) { + u32 len = skb->len; + + put_unaligned_le32(len, skb_push(skb, sizeof(len))); + pad = round_up(skb->len, 4) + 4 - skb->len; + } else { + pad = round_up(skb->len, 4) - skb->len; + } + + return mt76_skb_adjust_pad(skb, pad); +} +EXPORT_SYMBOL_GPL(mt7663_usb_sdio_tx_prepare_skb); + +static int mt7663u_dma_sched_init(struct mt7615_dev *dev) +{ + int i; + + mt76_rmw(dev, MT_DMA_SHDL(MT_DMASHDL_PKT_MAX_SIZE), + MT_DMASHDL_PKT_MAX_SIZE_PLE | MT_DMASHDL_PKT_MAX_SIZE_PSE, + FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PLE, 1) | + FIELD_PREP(MT_DMASHDL_PKT_MAX_SIZE_PSE, 8)); + + /* disable refill group 5 - group 15 and raise group 2 + * and 3 as high priority. + */ + mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_REFILL), 0xffe00006); + mt76_clear(dev, MT_DMA_SHDL(MT_DMASHDL_PAGE), BIT(16)); + + for (i = 0; i < 5; i++) + mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_GROUP_QUOTA(i)), + FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MIN, 0x3) | + FIELD_PREP(MT_DMASHDL_GROUP_QUOTA_MAX, 0x1ff)); + + mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(0)), 0x42104210); + mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(1)), 0x42104210); + + mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_Q_MAP(2)), 0x4444); + + /* group pririority from high to low: + * 15 (cmd groups) > 4 > 3 > 2 > 1 > 0. + */ + mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_SCHED_SET0), 0x6501234f); + mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_SCHED_SET1), 0xedcba987); + mt76_wr(dev, MT_DMA_SHDL(MT_DMASHDL_OPTIONAL), 0x7004801c); + + mt76_wr(dev, MT_UDMA_WLCFG_1, + FIELD_PREP(MT_WL_TX_TMOUT_LMT, 80000) | + FIELD_PREP(MT_WL_RX_AGG_PKT_LMT, 1)); + + /* setup UDMA Rx Flush */ + mt76_clear(dev, MT_UDMA_WLCFG_0, MT_WL_RX_FLUSH); + /* hif reset */ + mt76_set(dev, MT_HIF_RST, MT_HIF_LOGIC_RST_N); + + mt76_set(dev, MT_UDMA_WLCFG_0, + MT_WL_RX_AGG_EN | MT_WL_RX_EN | MT_WL_TX_EN | + MT_WL_RX_MPSZ_PAD0 | MT_TICK_1US_EN | + MT_WL_TX_TMOUT_FUNC_EN); + mt76_rmw(dev, MT_UDMA_WLCFG_0, MT_WL_RX_AGG_LMT | MT_WL_RX_AGG_TO, + FIELD_PREP(MT_WL_RX_AGG_LMT, 32) | + FIELD_PREP(MT_WL_RX_AGG_TO, 100)); + + return 0; +} + +static int mt7663_usb_sdio_init_hardware(struct mt7615_dev *dev) +{ + int ret, idx; + + ret = mt7615_eeprom_init(dev, MT_EFUSE_BASE); + if (ret < 0) + return ret; + + if (mt76_is_usb(&dev->mt76)) { + ret = mt7663u_dma_sched_init(dev); + if (ret) + return ret; + } + + set_bit(MT76_STATE_INITIALIZED, &dev->mphy.state); + + /* Beacon and mgmt frames should occupy wcid 0 */ + idx = mt76_wcid_alloc(dev->mt76.wcid_mask, MT7615_WTBL_STA - 1); + if (idx) + return -ENOSPC; + + dev->mt76.global_wcid.idx = idx; + dev->mt76.global_wcid.hw_key_idx = -1; + rcu_assign_pointer(dev->mt76.wcid[idx], &dev->mt76.global_wcid); + + return 0; +} + +int mt7663_usb_sdio_register_device(struct mt7615_dev *dev) +{ + struct ieee80211_hw *hw = mt76_hw(dev); + int err; + + INIT_WORK(&dev->wtbl_work, mt7663_usb_sdio_wtbl_work); + INIT_LIST_HEAD(&dev->wd_head); + mt7615_init_device(dev); + + err = mt7663_usb_sdio_init_hardware(dev); + if (err) + return err; + + hw->extra_tx_headroom += MT_USB_TXD_SIZE; + if (mt76_is_usb(&dev->mt76)) { + hw->extra_tx_headroom += MT_USB_HDR_SIZE; + /* check hw sg support in order to enable AMSDU */ + if (dev->mt76.usb.sg_en) + hw->max_tx_fragments = MT_HW_TXP_MAX_BUF_NUM; + else + hw->max_tx_fragments = 1; + } + + err = mt76_register_device(&dev->mt76, true, mt7615_rates, + ARRAY_SIZE(mt7615_rates)); + if (err < 0) + return err; + + if (!dev->mt76.usb.sg_en) { + struct ieee80211_sta_vht_cap *vht_cap; + + /* decrease max A-MSDU size if SG is not supported */ + vht_cap = &dev->mphy.sband_5g.sband.vht_cap; + vht_cap->cap &= ~IEEE80211_VHT_CAP_MAX_MPDU_LENGTH_11454; + } + + ieee80211_queue_work(hw, &dev->mcu_work); + mt7615_init_txpower(dev, &dev->mphy.sband_2g.sband); + mt7615_init_txpower(dev, &dev->mphy.sband_5g.sband); + + return mt7615_init_debugfs(dev); +} +EXPORT_SYMBOL_GPL(mt7663_usb_sdio_register_device); + +MODULE_AUTHOR("Lorenzo Bianconi <lorenzo@kernel.org>"); +MODULE_AUTHOR("Sean Wang <sean.wang@mediatek.com>"); +MODULE_LICENSE("Dual BSD/GPL"); |