From: Bo Jiao <Bo.Jiao@xxxxxxxxxxxx>
Update txfree v3 format.
This is an intermediate patch to add mt7916 support.
Co-developed-by: Sujuan Chen <sujuan.chen@xxxxxxxxxxxx>
Signed-off-by: Sujuan Chen <sujuan.chen@xxxxxxxxxxxx>
Co-developed-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
Signed-off-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
Signed-off-by: Bo Jiao <Bo.Jiao@xxxxxxxxxxxx>
Reviewed-by: Shayne Chen <shayne.chen@xxxxxxxxxxxx>
---
v4:
- fix the code defect which may cause tx free event parse error.
---
.../net/wireless/mediatek/mt76/mt7915/mac.c | 37 +++++++++++++------
.../net/wireless/mediatek/mt76/mt7915/mac.h | 8 ++--
2 files changed, 31 insertions(+), 14 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 0be2e9f..74ec7cd 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -1387,8 +1387,10 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
LIST_HEAD(free_list);
struct sk_buff *skb, *tmp;
void *end = data + len;
- u8 i, count;
- bool wake = false;
+ bool v3, wake = false;
+ u16 total, count = 0;
+ u32 txd = le32_to_cpu(free->txd);
+ u32 *cur_info;
/* clean DMA queues and unmap buffers first */
mt76_queue_tx_cleanup(dev, dev->mphy.q_tx[MT_TXQ_PSD], false);
@@ -1403,12 +1405,14 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
* 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));
- if (WARN_ON_ONCE((void *)&free->info[count] > end))
+ total = FIELD_GET(MT_TX_FREE_MSDU_CNT, le16_to_cpu(free->ctrl));
+ v3 = (FIELD_GET(MT_TX_FREE_VER, txd) == 0x4);
+ if (WARN_ON_ONCE((void *)&free->info[total >> v3] > end))
return;
- for (i = 0; i < count; i++) {
- u32 msdu, info = le32_to_cpu(free->info[i]);
+ for (cur_info = &free->info[0]; count < total; cur_info++) {
+ u32 msdu, info = le32_to_cpu(*cur_info);
+ u8 i;
/*
* 1'b1: new wcid pair.
@@ -1419,7 +1423,6 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
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);
@@ -1434,12 +1437,24 @@ mt7915_mac_tx_free(struct mt7915_dev *dev, void *data, int len)
continue;
}
- msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info);
- txwi = mt76_token_release(mdev, msdu, &wake);
- if (!txwi)
+ if (v3 && (info & MT_TX_FREE_MPDU_HEADER))
continue;
- mt7915_txwi_free(dev, txwi, sta, &free_list);
+ for (i = 0; i < 1 + v3; i++) {
+ if (v3) {
+ msdu = (info >> (15 * i)) & MT_TX_FREE_MSDU_ID_V3;
+ if (msdu == MT_TX_FREE_MSDU_ID_V3)
+ continue;
+ } else {
+ msdu = FIELD_GET(MT_TX_FREE_MSDU_ID, info);
+ }
+ count++;
+ txwi = mt76_token_release(mdev, msdu, &wake);
+ if (!txwi)
+ continue;
+
+ mt7915_txwi_free(dev, txwi, sta, &free_list);
+ }
}
mt7915_mac_sta_poll(dev);
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
index 7a2c740..4504ebc 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.h
@@ -298,18 +298,20 @@ struct mt7915_txp {
struct mt7915_tx_free {
__le16 rx_byte_cnt;
__le16 ctrl;
- u8 txd_cnt;
- u8 rsv[3];
+ __le32 txd;
__le32 info[];
} __packed __aligned(4);
+#define MT_TX_FREE_VER GENMASK(18, 16)
#define MT_TX_FREE_MSDU_CNT GENMASK(9, 0)
#define MT_TX_FREE_WLAN_ID GENMASK(23, 14)
#define MT_TX_FREE_LATENCY GENMASK(12, 0)
/* 0: success, others: dropped */
-#define MT_TX_FREE_STATUS GENMASK(14, 13)
#define MT_TX_FREE_MSDU_ID GENMASK(30, 16)
#define MT_TX_FREE_PAIR BIT(31)
+#define MT_TX_FREE_MPDU_HEADER BIT(30)
+#define MT_TX_FREE_MSDU_ID_V3 GENMASK(14, 0)
+
/* will support this field in further revision */
#define MT_TX_FREE_RATE GENMASK(13, 0)
--
2.18.0
