[PATCH v4 01/16] mt76: mt7921: refactor mac.c to be bus independent
sean.wang at mediatek.com
sean.wang at mediatek.com
Tue Oct 12 15:51:54 PDT 2021
From: Sean Wang <sean.wang at mediatek.com>
This is a preliminary patch to introduce mt7921s support.
Split out a new pci_mac.c from mac.c to make mac.c reusable between
mt7921s and mt7921e.
Tested-by: Deren Wu <deren.wu at mediatek.com>
Acked-by: Lorenzo Bianconi <lorenzo at kernel.org>
Signed-off-by: Sean Wang <sean.wang at mediatek.com>
---
.../wireless/mediatek/mt76/mt7921/Makefile | 2 +-
.../net/wireless/mediatek/mt76/mt7921/mac.c | 348 +----------------
.../wireless/mediatek/mt76/mt7921/mt7921.h | 25 +-
.../net/wireless/mediatek/mt76/mt7921/pci.c | 12 +-
.../wireless/mediatek/mt76/mt7921/pci_mac.c | 352 ++++++++++++++++++
5 files changed, 389 insertions(+), 350 deletions(-)
create mode 100644 drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/Makefile b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
index 3471d82fc265..554202358470 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/Makefile
@@ -4,5 +4,5 @@ obj-$(CONFIG_MT7921E) += mt7921e.o
CFLAGS_trace.o := -I$(src)
-mt7921e-y := pci.o mac.o mcu.o dma.o eeprom.o main.o init.o debugfs.o trace.o
+mt7921e-y := pci.o pci_mac.o mac.o mcu.o dma.o eeprom.o main.o init.o debugfs.o trace.o
mt7921e-$(CONFIG_NL80211_TESTMODE) += testmode.o
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
index 0b51db9656e7..0857d523bb06 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
@@ -49,7 +49,7 @@ bool mt7921_mac_wtbl_update(struct mt7921_dev *dev, int idx, u32 mask)
0, 5000);
}
-static void mt7921_mac_sta_poll(struct mt7921_dev *dev)
+void mt7921_mac_sta_poll(struct mt7921_dev *dev)
{
static const u8 ac_to_tid[] = {
[IEEE80211_AC_BE] = 0,
@@ -68,8 +68,6 @@ static void mt7921_mac_sta_poll(struct mt7921_dev *dev)
list_splice_init(&dev->sta_poll_list, &sta_poll_list);
spin_unlock_bh(&dev->sta_poll_lock);
- rcu_read_lock();
-
while (true) {
bool clear = false;
u32 addr, val;
@@ -166,8 +164,6 @@ static void mt7921_mac_sta_poll(struct mt7921_dev *dev)
rate->flags &= ~RATE_INFO_FLAGS_SHORT_GI;
}
}
-
- rcu_read_unlock();
}
static void
@@ -836,11 +832,10 @@ mt7921_mac_write_txwi_80211(struct mt7921_dev *dev, __le32 *txwi,
txwi[7] |= cpu_to_le32(val);
}
-static void
-mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi,
- struct sk_buff *skb, struct mt76_wcid *wcid,
- struct ieee80211_key_conf *key, int pid,
- bool beacon)
+void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi,
+ struct sk_buff *skb, struct mt76_wcid *wcid,
+ struct ieee80211_key_conf *key, int pid,
+ bool beacon)
{
struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
struct ieee80211_vif *vif = info->control.vif;
@@ -922,87 +917,7 @@ mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi,
}
}
-static void
-mt7921_write_hw_txp(struct mt7921_dev *dev, struct mt76_tx_info *tx_info,
- void *txp_ptr, u32 id)
-{
- struct mt7921_hw_txp *txp = txp_ptr;
- struct mt7921_txp_ptr *ptr = &txp->ptr[0];
- int i, nbuf = tx_info->nbuf - 1;
-
- tx_info->buf[0].len = MT_TXD_SIZE + sizeof(*txp);
- tx_info->nbuf = 1;
-
- txp->msdu_id[0] = cpu_to_le16(id | MT_MSDU_ID_VALID);
-
- for (i = 0; i < nbuf; i++) {
- u16 len = tx_info->buf[i + 1].len & MT_TXD_LEN_MASK;
- u32 addr = tx_info->buf[i + 1].addr;
-
- if (i == nbuf - 1)
- len |= MT_TXD_LEN_LAST;
-
- if (i & 1) {
- ptr->buf1 = cpu_to_le32(addr);
- ptr->len1 = cpu_to_le16(len);
- ptr++;
- } else {
- ptr->buf0 = cpu_to_le32(addr);
- ptr->len0 = cpu_to_le16(len);
- }
- }
-}
-
-int mt7921_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 mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
- struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb);
- struct ieee80211_key_conf *key = info->control.hw_key;
- struct mt76_txwi_cache *t;
- struct mt7921_txp_common *txp;
- int id, pid;
- u8 *txwi = (u8 *)txwi_ptr;
-
- if (unlikely(tx_info->skb->len <= ETH_HLEN))
- return -EINVAL;
-
- if (!wcid)
- wcid = &dev->mt76.global_wcid;
-
- t = (struct mt76_txwi_cache *)(txwi + mdev->drv->txwi_size);
- t->skb = tx_info->skb;
-
- id = mt76_token_consume(mdev, &t);
- if (id < 0)
- return id;
-
- if (sta) {
- struct mt7921_sta *msta = (struct mt7921_sta *)sta->drv_priv;
-
- if (time_after(jiffies, msta->last_txs + HZ / 4)) {
- info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
- msta->last_txs = jiffies;
- }
- }
-
- pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
- mt7921_mac_write_txwi(dev, txwi_ptr, tx_info->skb, wcid, key,
- pid, false);
-
- txp = (struct mt7921_txp_common *)(txwi + MT_TXD_SIZE);
- memset(txp, 0, sizeof(struct mt7921_txp_common));
- mt7921_write_hw_txp(dev, tx_info, txp, id);
-
- tx_info->skb = DMA_DUMMY_DATA;
-
- return 0;
-}
-
-static void
-mt7921_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi)
+void mt7921_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi)
{
struct mt7921_sta *msta;
u16 fc, tid;
@@ -1026,143 +941,6 @@ mt7921_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi)
ieee80211_start_tx_ba_session(sta, tid, 0);
}
-static void
-mt7921_txp_skb_unmap(struct mt76_dev *dev, struct mt76_txwi_cache *t)
-{
- struct mt7921_txp_common *txp;
- int i;
-
- txp = mt7921_txwi_to_txp(dev, t);
-
- for (i = 0; i < ARRAY_SIZE(txp->hw.ptr); i++) {
- struct mt7921_txp_ptr *ptr = &txp->hw.ptr[i];
- bool last;
- u16 len;
-
- len = le16_to_cpu(ptr->len0);
- last = len & MT_TXD_LEN_LAST;
- len &= MT_TXD_LEN_MASK;
- dma_unmap_single(dev->dev, le32_to_cpu(ptr->buf0), len,
- DMA_TO_DEVICE);
- if (last)
- break;
-
- len = le16_to_cpu(ptr->len1);
- last = len & MT_TXD_LEN_LAST;
- len &= MT_TXD_LEN_MASK;
- dma_unmap_single(dev->dev, le32_to_cpu(ptr->buf1), len,
- DMA_TO_DEVICE);
- if (last)
- break;
- }
-}
-
-static void
-mt7921_txwi_free(struct mt7921_dev *dev, struct mt76_txwi_cache *t,
- struct ieee80211_sta *sta, bool clear_status,
- struct list_head *free_list)
-{
- struct mt76_dev *mdev = &dev->mt76;
- __le32 *txwi;
- u16 wcid_idx;
-
- mt7921_txp_skb_unmap(mdev, t);
- if (!t->skb)
- goto out;
-
- txwi = (__le32 *)mt76_get_txwi_ptr(mdev, t);
- if (sta) {
- struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
-
- if (likely(t->skb->protocol != cpu_to_be16(ETH_P_PAE)))
- mt7921_tx_check_aggr(sta, txwi);
-
- wcid_idx = wcid->idx;
- } else {
- wcid_idx = FIELD_GET(MT_TXD1_WLAN_IDX, le32_to_cpu(txwi[1]));
- }
-
- __mt76_tx_complete_skb(mdev, wcid_idx, t->skb, free_list);
-
-out:
- t->skb = NULL;
- mt76_put_txwi(mdev, t);
-}
-
-static void
-mt7921_mac_tx_free(struct mt7921_dev *dev, struct sk_buff *skb)
-{
- struct mt7921_tx_free *free = (struct mt7921_tx_free *)skb->data;
- struct mt76_dev *mdev = &dev->mt76;
- struct mt76_txwi_cache *txwi;
- struct ieee80211_sta *sta = NULL;
- LIST_HEAD(free_list);
- struct sk_buff *tmp;
- bool wake = false;
- u8 i, count;
-
- /* clean DMA queues and unmap buffers first */
- mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false);
- mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_BE], false);
-
- /* TODO: MT_TX_FREE_LATENCY is msdu time from the TXD is queued into PLE,
- * to the time ack is received or dropped by hw (air + hw queue time).
- * Should avoid accessing WTBL to get Tx airtime, and use it instead.
- */
- count = FIELD_GET(MT_TX_FREE_MSDU_CNT, le16_to_cpu(free->ctrl));
- for (i = 0; i < count; i++) {
- u32 msdu, info = le32_to_cpu(free->info[i]);
- u8 stat;
-
- /* 1'b1: new wcid pair.
- * 1'b0: msdu_id with the same 'wcid pair' as above.
- */
- if (info & MT_TX_FREE_PAIR) {
- struct mt7921_sta *msta;
- struct mt7921_phy *phy;
- struct mt76_wcid *wcid;
- u16 idx;
-
- count++;
- idx = FIELD_GET(MT_TX_FREE_WLAN_ID, info);
- wcid = rcu_dereference(dev->mt76.wcid[idx]);
- sta = wcid_to_sta(wcid);
- if (!sta)
- continue;
-
- msta = container_of(wcid, struct mt7921_sta, wcid);
- phy = msta->vif->phy;
- spin_lock_bh(&dev->sta_poll_lock);
- if (list_empty(&msta->poll_list))
- list_add_tail(&msta->poll_list, &dev->sta_poll_list);
- spin_unlock_bh(&dev->sta_poll_lock);
- continue;
- }
-
- msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info);
- stat = FIELD_GET(MT_TX_FREE_STATUS, info);
-
- txwi = mt76_token_release(mdev, msdu, &wake);
- if (!txwi)
- continue;
-
- mt7921_txwi_free(dev, txwi, sta, stat, &free_list);
- }
-
- if (wake)
- mt76_set_tx_blocked(&dev->mt76, false);
-
- napi_consume_skb(skb, 1);
-
- list_for_each_entry_safe(skb, tmp, &free_list, list) {
- skb_list_del_init(skb);
- napi_consume_skb(skb, 1);
- }
-
- mt7921_mac_sta_poll(dev);
- mt76_worker_schedule(&dev->mt76.tx_worker);
-}
-
static bool
mt7921_mac_add_txs_skb(struct mt7921_dev *dev, struct mt76_wcid *wcid, int pid,
__le32 *txs_data)
@@ -1330,9 +1108,6 @@ void mt7921_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
type = PKT_TYPE_NORMAL_MCU;
switch (type) {
- case PKT_TYPE_TXRX_NOTIFY:
- mt7921_mac_tx_free(dev, skb);
- break;
case PKT_TYPE_RX_EVENT:
mt7921_mcu_rx_event(dev, skb);
break;
@@ -1354,33 +1129,6 @@ void mt7921_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
}
}
-void mt7921_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e)
-{
- struct mt7921_dev *dev;
-
- if (!e->txwi) {
- dev_kfree_skb_any(e->skb);
- return;
- }
-
- dev = container_of(mdev, struct mt7921_dev, mt76);
-
- /* error path */
- if (e->skb == DMA_DUMMY_DATA) {
- struct mt76_txwi_cache *t;
- struct mt7921_txp_common *txp;
- u16 token;
-
- txp = mt7921_txwi_to_txp(mdev, e->txwi);
- token = le16_to_cpu(txp->hw.msdu_id[0]) & ~MT_MSDU_ID_VALID;
- t = mt76_token_put(mdev, token);
- e->skb = t ? t->skb : NULL;
- }
-
- if (e->skb)
- mt76_tx_complete_skb(mdev, e->wcid, e->skb);
-}
-
void mt7921_mac_reset_counters(struct mt7921_phy *phy)
{
struct mt7921_dev *dev = phy->dev;
@@ -1496,20 +1244,6 @@ void mt7921_update_channel(struct mt76_phy *mphy)
mt76_connac_power_save_sched(mphy, &dev->pm);
}
-void mt7921_tx_token_put(struct mt7921_dev *dev)
-{
- struct mt76_txwi_cache *txwi;
- int id;
-
- spin_lock_bh(&dev->mt76.token_lock);
- idr_for_each_entry(&dev->mt76.token, txwi, id) {
- mt7921_txwi_free(dev, txwi, NULL, false, NULL);
- dev->mt76.token_count--;
- }
- spin_unlock_bh(&dev->mt76.token_lock);
- idr_destroy(&dev->mt76.token);
-}
-
static void
mt7921_vif_connect_iter(void *priv, u8 *mac,
struct ieee80211_vif *vif)
@@ -1524,74 +1258,6 @@ mt7921_vif_connect_iter(void *priv, u8 *mac,
mt7921_mcu_set_tx(dev, vif);
}
-static int
-mt7921_mac_reset(struct mt7921_dev *dev)
-{
- int i, err;
-
- mt76_connac_free_pending_tx_skbs(&dev->pm, NULL);
-
- mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
- mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
-
- set_bit(MT76_RESET, &dev->mphy.state);
- set_bit(MT76_MCU_RESET, &dev->mphy.state);
- wake_up(&dev->mt76.mcu.wait);
- skb_queue_purge(&dev->mt76.mcu.res_q);
-
- mt76_txq_schedule_all(&dev->mphy);
-
- mt76_worker_disable(&dev->mt76.tx_worker);
- napi_disable(&dev->mt76.napi[MT_RXQ_MAIN]);
- napi_disable(&dev->mt76.napi[MT_RXQ_MCU]);
- napi_disable(&dev->mt76.napi[MT_RXQ_MCU_WA]);
- napi_disable(&dev->mt76.tx_napi);
-
- mt7921_tx_token_put(dev);
- idr_init(&dev->mt76.token);
-
- mt7921_wpdma_reset(dev, true);
-
- local_bh_disable();
- mt76_for_each_q_rx(&dev->mt76, i) {
- napi_enable(&dev->mt76.napi[i]);
- napi_schedule(&dev->mt76.napi[i]);
- }
- local_bh_enable();
-
- clear_bit(MT76_MCU_RESET, &dev->mphy.state);
-
- mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA,
- MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
- MT_INT_MCU_CMD);
- mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
-
- err = mt7921_run_firmware(dev);
- if (err)
- goto out;
-
- err = mt7921_mcu_set_eeprom(dev);
- if (err)
- goto out;
-
- err = mt7921_mac_init(dev);
- if (err)
- goto out;
-
- err = __mt7921_start(&dev->phy);
-out:
- clear_bit(MT76_RESET, &dev->mphy.state);
-
- local_bh_disable();
- napi_enable(&dev->mt76.tx_napi);
- napi_schedule(&dev->mt76.tx_napi);
- local_bh_enable();
-
- mt76_worker_enable(&dev->mt76.tx_worker);
-
- return err;
-}
-
/* system error recovery */
void mt7921_mac_reset_work(struct work_struct *work)
{
@@ -1613,7 +1279,7 @@ void mt7921_mac_reset_work(struct work_struct *work)
for (i = 0; i < 10; i++) {
__mt7921_mcu_drv_pmctrl(dev);
- if (!mt7921_mac_reset(dev))
+ if (!mt7921_dev_reset(dev))
break;
}
mutex_unlock(&dev->mt76.mutex);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
index e14b86b1c6d1..70c0f41180a1 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mt7921.h
@@ -133,6 +133,11 @@ struct mt7921_phy {
struct delayed_work scan_work;
};
+#define mt7921_dev_reset(dev) ((dev)->hif_ops->reset(dev))
+struct mt7921_hif_ops {
+ int (*reset)(struct mt7921_dev *dev);
+};
+
struct mt7921_dev {
union { /* must be first */
struct mt76_dev mt76;
@@ -156,6 +161,7 @@ struct mt7921_dev {
struct mt76_connac_pm pm;
struct mt76_connac_coredump coredump;
+ const struct mt7921_hif_ops *hif_ops;
};
enum {
@@ -325,13 +331,13 @@ void mt7921_mac_reset_work(struct work_struct *work);
void mt7921_mac_update_mib_stats(struct mt7921_phy *phy);
void mt7921_reset(struct mt76_dev *mdev);
void mt7921_tx_cleanup(struct mt7921_dev *dev);
-int mt7921_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);
+int mt7921e_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);
void mt7921_tx_worker(struct mt76_worker *w);
-void mt7921_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
+void mt7921e_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e);
int mt7921_init_tx_queues(struct mt7921_phy *phy, int idx, int n_desc);
void mt7921_tx_token_put(struct mt7921_dev *dev);
void mt7921_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
@@ -366,4 +372,13 @@ int mt7921_testmode_cmd(struct ieee80211_hw *hw, struct ieee80211_vif *vif,
void *data, int len);
int mt7921_testmode_dump(struct ieee80211_hw *hw, struct sk_buff *msg,
struct netlink_callback *cb, void *data, int len);
+void mt7921_mac_write_txwi(struct mt7921_dev *dev, __le32 *txwi,
+ struct sk_buff *skb, struct mt76_wcid *wcid,
+ struct ieee80211_key_conf *key, int pid,
+ bool beacon);
+void mt7921_tx_check_aggr(struct ieee80211_sta *sta, __le32 *txwi);
+void mt7921_mac_sta_poll(struct mt7921_dev *dev);
+void mt7921e_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
+ struct sk_buff *skb);
+int mt7921e_mac_reset(struct mt7921_dev *dev);
#endif
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
index b5622b612613..fb19cff4a697 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci.c
@@ -104,9 +104,9 @@ static int mt7921_pci_probe(struct pci_dev *pdev,
SURVEY_INFO_TIME_RX |
SURVEY_INFO_TIME_BSS_RX,
.token_size = MT7921_TOKEN_SIZE,
- .tx_prepare_skb = mt7921_tx_prepare_skb,
- .tx_complete_skb = mt7921_tx_complete_skb,
- .rx_skb = mt7921_queue_rx_skb,
+ .tx_prepare_skb = mt7921e_tx_prepare_skb,
+ .tx_complete_skb = mt7921e_tx_complete_skb,
+ .rx_skb = mt7921e_queue_rx_skb,
.rx_poll_complete = mt7921_rx_poll_complete,
.sta_ps = mt7921_sta_ps,
.sta_add = mt7921_mac_sta_add,
@@ -114,6 +114,11 @@ static int mt7921_pci_probe(struct pci_dev *pdev,
.sta_remove = mt7921_mac_sta_remove,
.update_survey = mt7921_update_channel,
};
+
+ static const struct mt7921_hif_ops mt7921_pcie_ops = {
+ .reset = mt7921e_mac_reset,
+ };
+
struct mt7921_dev *dev;
struct mt76_dev *mdev;
int ret;
@@ -147,6 +152,7 @@ static int mt7921_pci_probe(struct pci_dev *pdev,
}
dev = container_of(mdev, struct mt7921_dev, mt76);
+ dev->hif_ops = &mt7921_pcie_ops;
mt76_mmio_init(&dev->mt76, pcim_iomap_table(pdev)[0]);
tasklet_init(&dev->irq_tasklet, mt7921_irq_tasklet, (unsigned long)dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c
new file mode 100644
index 000000000000..c11f19e8ab74
--- /dev/null
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/pci_mac.c
@@ -0,0 +1,352 @@
+// SPDX-License-Identifier: ISC
+/* Copyright (C) 2021 MediaTek Inc. */
+
+#include "mt7921.h"
+#include "../dma.h"
+#include "mac.h"
+
+static void
+mt7921_write_hw_txp(struct mt7921_dev *dev, struct mt76_tx_info *tx_info,
+ void *txp_ptr, u32 id)
+{
+ struct mt7921_hw_txp *txp = txp_ptr;
+ struct mt7921_txp_ptr *ptr = &txp->ptr[0];
+ int i, nbuf = tx_info->nbuf - 1;
+
+ tx_info->buf[0].len = MT_TXD_SIZE + sizeof(*txp);
+ tx_info->nbuf = 1;
+
+ txp->msdu_id[0] = cpu_to_le16(id | MT_MSDU_ID_VALID);
+
+ for (i = 0; i < nbuf; i++) {
+ u16 len = tx_info->buf[i + 1].len & MT_TXD_LEN_MASK;
+ u32 addr = tx_info->buf[i + 1].addr;
+
+ if (i == nbuf - 1)
+ len |= MT_TXD_LEN_LAST;
+
+ if (i & 1) {
+ ptr->buf1 = cpu_to_le32(addr);
+ ptr->len1 = cpu_to_le16(len);
+ ptr++;
+ } else {
+ ptr->buf0 = cpu_to_le32(addr);
+ ptr->len0 = cpu_to_le16(len);
+ }
+ }
+}
+
+int mt7921e_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 mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
+ struct ieee80211_tx_info *info = IEEE80211_SKB_CB(tx_info->skb);
+ struct ieee80211_key_conf *key = info->control.hw_key;
+ struct mt76_txwi_cache *t;
+ struct mt7921_txp_common *txp;
+ int id, pid;
+ u8 *txwi = (u8 *)txwi_ptr;
+
+ if (unlikely(tx_info->skb->len <= ETH_HLEN))
+ return -EINVAL;
+
+ if (!wcid)
+ wcid = &dev->mt76.global_wcid;
+
+ t = (struct mt76_txwi_cache *)(txwi + mdev->drv->txwi_size);
+ t->skb = tx_info->skb;
+
+ id = mt76_token_consume(mdev, &t);
+ if (id < 0)
+ return id;
+
+ if (sta) {
+ struct mt7921_sta *msta = (struct mt7921_sta *)sta->drv_priv;
+
+ if (time_after(jiffies, msta->last_txs + HZ / 4)) {
+ info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS;
+ msta->last_txs = jiffies;
+ }
+ }
+
+ pid = mt76_tx_status_skb_add(mdev, wcid, tx_info->skb);
+ mt7921_mac_write_txwi(dev, txwi_ptr, tx_info->skb, wcid, key,
+ pid, false);
+
+ txp = (struct mt7921_txp_common *)(txwi + MT_TXD_SIZE);
+ memset(txp, 0, sizeof(struct mt7921_txp_common));
+ mt7921_write_hw_txp(dev, tx_info, txp, id);
+
+ tx_info->skb = DMA_DUMMY_DATA;
+
+ return 0;
+}
+
+static void
+mt7921_txp_skb_unmap(struct mt76_dev *dev, struct mt76_txwi_cache *t)
+{
+ struct mt7921_txp_common *txp;
+ int i;
+
+ txp = mt7921_txwi_to_txp(dev, t);
+
+ for (i = 0; i < ARRAY_SIZE(txp->hw.ptr); i++) {
+ struct mt7921_txp_ptr *ptr = &txp->hw.ptr[i];
+ bool last;
+ u16 len;
+
+ len = le16_to_cpu(ptr->len0);
+ last = len & MT_TXD_LEN_LAST;
+ len &= MT_TXD_LEN_MASK;
+ dma_unmap_single(dev->dev, le32_to_cpu(ptr->buf0), len,
+ DMA_TO_DEVICE);
+ if (last)
+ break;
+
+ len = le16_to_cpu(ptr->len1);
+ last = len & MT_TXD_LEN_LAST;
+ len &= MT_TXD_LEN_MASK;
+ dma_unmap_single(dev->dev, le32_to_cpu(ptr->buf1), len,
+ DMA_TO_DEVICE);
+ if (last)
+ break;
+ }
+}
+
+static void
+mt7921_txwi_free(struct mt7921_dev *dev, struct mt76_txwi_cache *t,
+ struct ieee80211_sta *sta, bool clear_status,
+ struct list_head *free_list)
+{
+ struct mt76_dev *mdev = &dev->mt76;
+ __le32 *txwi;
+ u16 wcid_idx;
+
+ mt7921_txp_skb_unmap(mdev, t);
+ if (!t->skb)
+ goto out;
+
+ txwi = (__le32 *)mt76_get_txwi_ptr(mdev, t);
+ if (sta) {
+ struct mt76_wcid *wcid = (struct mt76_wcid *)sta->drv_priv;
+
+ if (likely(t->skb->protocol != cpu_to_be16(ETH_P_PAE)))
+ mt7921_tx_check_aggr(sta, txwi);
+
+ wcid_idx = wcid->idx;
+ } else {
+ wcid_idx = FIELD_GET(MT_TXD1_WLAN_IDX, le32_to_cpu(txwi[1]));
+ }
+
+ __mt76_tx_complete_skb(mdev, wcid_idx, t->skb, free_list);
+
+out:
+ t->skb = NULL;
+ mt76_put_txwi(mdev, t);
+}
+
+static void
+mt7921_mac_tx_free(struct mt7921_dev *dev, struct sk_buff *skb)
+{
+ struct mt7921_tx_free *free = (struct mt7921_tx_free *)skb->data;
+ struct mt76_dev *mdev = &dev->mt76;
+ struct mt76_txwi_cache *txwi;
+ struct ieee80211_sta *sta = NULL;
+ LIST_HEAD(free_list);
+ struct sk_buff *tmp;
+ bool wake = false;
+ u8 i, count;
+
+ /* clean DMA queues and unmap buffers first */
+ mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false);
+ mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_BE], false);
+
+ /* TODO: MT_TX_FREE_LATENCY is msdu time from the TXD is queued into PLE,
+ * to the time ack is received or dropped by hw (air + hw queue time).
+ * Should avoid accessing WTBL to get Tx airtime, and use it instead.
+ */
+ count = FIELD_GET(MT_TX_FREE_MSDU_CNT, le16_to_cpu(free->ctrl));
+ for (i = 0; i < count; i++) {
+ u32 msdu, info = le32_to_cpu(free->info[i]);
+ u8 stat;
+
+ /* 1'b1: new wcid pair.
+ * 1'b0: msdu_id with the same 'wcid pair' as above.
+ */
+ if (info & MT_TX_FREE_PAIR) {
+ struct mt7921_sta *msta;
+ struct mt7921_phy *phy;
+ struct mt76_wcid *wcid;
+ u16 idx;
+
+ count++;
+ idx = FIELD_GET(MT_TX_FREE_WLAN_ID, info);
+ wcid = rcu_dereference(dev->mt76.wcid[idx]);
+ sta = wcid_to_sta(wcid);
+ if (!sta)
+ continue;
+
+ msta = container_of(wcid, struct mt7921_sta, wcid);
+ phy = msta->vif->phy;
+ spin_lock_bh(&dev->sta_poll_lock);
+ if (list_empty(&msta->poll_list))
+ list_add_tail(&msta->poll_list, &dev->sta_poll_list);
+ spin_unlock_bh(&dev->sta_poll_lock);
+ continue;
+ }
+
+ msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info);
+ stat = FIELD_GET(MT_TX_FREE_STATUS, info);
+
+ txwi = mt76_token_release(mdev, msdu, &wake);
+ if (!txwi)
+ continue;
+
+ mt7921_txwi_free(dev, txwi, sta, stat, &free_list);
+ }
+
+ if (wake)
+ mt76_set_tx_blocked(&dev->mt76, false);
+
+ napi_consume_skb(skb, 1);
+
+ list_for_each_entry_safe(skb, tmp, &free_list, list) {
+ skb_list_del_init(skb);
+ napi_consume_skb(skb, 1);
+ }
+
+ rcu_read_lock();
+ mt7921_mac_sta_poll(dev);
+ rcu_read_unlock();
+
+ mt76_worker_schedule(&dev->mt76.tx_worker);
+}
+
+void mt7921e_queue_rx_skb(struct mt76_dev *mdev, enum mt76_rxq_id q,
+ struct sk_buff *skb)
+{
+ struct mt7921_dev *dev = container_of(mdev, struct mt7921_dev, mt76);
+ __le32 *rxd = (__le32 *)skb->data;
+ enum rx_pkt_type type;
+
+ type = FIELD_GET(MT_RXD0_PKT_TYPE, le32_to_cpu(rxd[0]));
+
+ switch (type) {
+ case PKT_TYPE_TXRX_NOTIFY:
+ mt7921_mac_tx_free(dev, skb);
+ break;
+ default:
+ mt7921_queue_rx_skb(mdev, q, skb);
+ break;
+ }
+}
+
+void mt7921e_tx_complete_skb(struct mt76_dev *mdev, struct mt76_queue_entry *e)
+{
+ struct mt7921_dev *dev;
+
+ if (!e->txwi) {
+ dev_kfree_skb_any(e->skb);
+ return;
+ }
+
+ dev = container_of(mdev, struct mt7921_dev, mt76);
+
+ /* error path */
+ if (e->skb == DMA_DUMMY_DATA) {
+ struct mt76_txwi_cache *t;
+ struct mt7921_txp_common *txp;
+ u16 token;
+
+ txp = mt7921_txwi_to_txp(mdev, e->txwi);
+ token = le16_to_cpu(txp->hw.msdu_id[0]) & ~MT_MSDU_ID_VALID;
+ t = mt76_token_put(mdev, token);
+ e->skb = t ? t->skb : NULL;
+ }
+
+ if (e->skb)
+ mt76_tx_complete_skb(mdev, e->wcid, e->skb);
+}
+
+void mt7921_tx_token_put(struct mt7921_dev *dev)
+{
+ struct mt76_txwi_cache *txwi;
+ int id;
+
+ spin_lock_bh(&dev->mt76.token_lock);
+ idr_for_each_entry(&dev->mt76.token, txwi, id) {
+ mt7921_txwi_free(dev, txwi, NULL, false, NULL);
+ dev->mt76.token_count--;
+ }
+ spin_unlock_bh(&dev->mt76.token_lock);
+ idr_destroy(&dev->mt76.token);
+}
+
+int mt7921e_mac_reset(struct mt7921_dev *dev)
+{
+ int i, err;
+
+ mt76_connac_free_pending_tx_skbs(&dev->pm, NULL);
+
+ mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA, 0);
+ mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0x0);
+
+ set_bit(MT76_RESET, &dev->mphy.state);
+ set_bit(MT76_MCU_RESET, &dev->mphy.state);
+ wake_up(&dev->mt76.mcu.wait);
+ skb_queue_purge(&dev->mt76.mcu.res_q);
+
+ mt76_txq_schedule_all(&dev->mphy);
+
+ mt76_worker_disable(&dev->mt76.tx_worker);
+ napi_disable(&dev->mt76.napi[MT_RXQ_MAIN]);
+ napi_disable(&dev->mt76.napi[MT_RXQ_MCU]);
+ napi_disable(&dev->mt76.napi[MT_RXQ_MCU_WA]);
+ napi_disable(&dev->mt76.tx_napi);
+
+ mt7921_tx_token_put(dev);
+ idr_init(&dev->mt76.token);
+
+ mt7921_wpdma_reset(dev, true);
+
+ local_bh_disable();
+ mt76_for_each_q_rx(&dev->mt76, i) {
+ napi_enable(&dev->mt76.napi[i]);
+ napi_schedule(&dev->mt76.napi[i]);
+ }
+ local_bh_enable();
+
+ clear_bit(MT76_MCU_RESET, &dev->mphy.state);
+
+ mt76_wr(dev, MT_WFDMA0_HOST_INT_ENA,
+ MT_INT_RX_DONE_ALL | MT_INT_TX_DONE_ALL |
+ MT_INT_MCU_CMD);
+ mt76_wr(dev, MT_PCIE_MAC_INT_ENABLE, 0xff);
+
+ err = mt7921_run_firmware(dev);
+ if (err)
+ goto out;
+
+ err = mt7921_mcu_set_eeprom(dev);
+ if (err)
+ goto out;
+
+ err = mt7921_mac_init(dev);
+ if (err)
+ goto out;
+
+ err = __mt7921_start(&dev->phy);
+out:
+ clear_bit(MT76_RESET, &dev->mphy.state);
+
+ local_bh_disable();
+ napi_enable(&dev->mt76.tx_napi);
+ napi_schedule(&dev->mt76.tx_napi);
+ local_bh_enable();
+
+ mt76_worker_enable(&dev->mt76.tx_worker);
+
+ return err;
+}
--
2.25.1
More information about the Linux-mediatek
mailing list