Merge tag 'mt76-next-2025-11-24' of https://github.com/nbd168/wireless

Felix Fietkau says:
===================
mt76 patches for 6.19

- relicense to BSD-3-Clause-Clear
- fixes
- support WED on devices which exceed 32-bit DMA
- airoha NPU support
- mt7925 regd improvements
- more mt7996 MLO work
===================

Link: https://patch.msgid.link/6b6d1033-dddf-4cc9-b240-93da7f8b8773@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

Author: jmberg-intel

Documentation/devicetree/bindings/net/wireless/mediatek,mt76.yaml

@@ -151,6 +151,12 @@ properties:
               - ETSI
               - JP
 
+          country:
+            $ref: /schemas/types.yaml#/definitions/string
+            pattern: '^[A-Z]{2}$'
+            description:
+              ISO 3166-1 alpha-2 country code for power limits
+
         patternProperties:
           "^txpower-[256]g$":
             type: object
@@ -210,6 +216,66 @@ properties:
                       minItems: 13
                       maxItems: 13
 
+                  paths-cck:
+                    $ref: /schemas/types.yaml#/definitions/uint8-array
+                    minItems: 4
+                    maxItems: 4
+                    description:
+                      4 half-dBm backoff values (1 - 4 antennas, single spacial
+                      stream)
+
+                  paths-ofdm:
+                    $ref: /schemas/types.yaml#/definitions/uint8-array
+                    minItems: 4
+                    maxItems: 4
+                    description:
+                      4 half-dBm backoff values (1 - 4 antennas, single spacial
+                      stream)
+
+                  paths-ofdm-bf:
+                    $ref: /schemas/types.yaml#/definitions/uint8-array
+                    minItems: 4
+                    maxItems: 4
+                    description:
+                      4 half-dBm backoff values for beamforming
+                      (1 - 4 antennas, single spacial stream)
+
+                  paths-ru:
+                    $ref: /schemas/types.yaml#/definitions/uint8-matrix
+                    description:
+                      Sets of half-dBm backoff values for 802.11ax rates for
+                      1T1ss (aka 1 transmitting antenna with 1 spacial stream),
+                      2T1ss, 3T1ss, 4T1ss, 2T2ss, 3T2ss, 4T2ss, 3T3ss, 4T3ss
+                      and 4T4ss.
+                      Each set starts with the number of channel bandwidth or
+                      resource unit settings for which the rate set applies,
+                      followed by 10 power limit values. The order of the
+                      channel resource unit settings is RU26, RU52, RU106,
+                      RU242/SU20, RU484/SU40, RU996/SU80 and RU2x996/SU160.
+                    minItems: 1
+                    maxItems: 7
+                    items:
+                      minItems: 11
+                      maxItems: 11
+
+                  paths-ru-bf:
+                    $ref: /schemas/types.yaml#/definitions/uint8-matrix
+                    description:
+                      Sets of half-dBm backoff (beamforming) values for 802.11ax
+                      rates for 1T1ss (aka 1 transmitting antenna with 1 spacial
+                      stream), 2T1ss, 3T1ss, 4T1ss, 2T2ss, 3T2ss, 4T2ss, 3T3ss,
+                      4T3ss and 4T4ss.
+                      Each set starts with the number of channel bandwidth or
+                      resource unit settings for which the rate set applies,
+                      followed by 10 power limit values. The order of the
+                      channel resource unit settings is RU26, RU52, RU106,
+                      RU242/SU20, RU484/SU40, RU996/SU80 and RU2x996/SU160.
+                    minItems: 1
+                    maxItems: 7
+                    items:
+                      minItems: 11
+                      maxItems: 11
+
                   txs-delta:
                     $ref: /schemas/types.yaml#/definitions/uint32-array
                     description:

drivers/net/wireless/mediatek/mt76/Kconfig

@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: GPL-2.0-only
+# SPDX-License-Identifier: BSD-3-Clause-Clear
 config MT76_CORE
 	tristate
 	select PAGE_POOL
@@ -37,6 +37,10 @@ config MT792x_USB
 	tristate
 	select MT76_USB
 
+config MT76_NPU
+	bool
+	depends on MT76_CORE
+
 source "drivers/net/wireless/mediatek/mt76/mt76x0/Kconfig"
 source "drivers/net/wireless/mediatek/mt76/mt76x2/Kconfig"
 source "drivers/net/wireless/mediatek/mt76/mt7603/Kconfig"

drivers/net/wireless/mediatek/mt76/Makefile

@@ -1,4 +1,4 @@
-# SPDX-License-Identifier: GPL-2.0-only
+# SPDX-License-Identifier: BSD-3-Clause-Clear
 obj-$(CONFIG_MT76_CORE) += mt76.o
 obj-$(CONFIG_MT76_USB) += mt76-usb.o
 obj-$(CONFIG_MT76_SDIO) += mt76-sdio.o
@@ -12,6 +12,7 @@ mt76-y := \
 	mmio.o util.o trace.o dma.o mac80211.o debugfs.o eeprom.o \
 	tx.o agg-rx.o mcu.o wed.o scan.o channel.o
 
+mt76-$(CONFIG_MT76_NPU) += npu.o
 mt76-$(CONFIG_PCI) += pci.o
 mt76-$(CONFIG_NL80211_TESTMODE) += testmode.o
 

drivers/net/wireless/mediatek/mt76/agg-rx.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: ISC
+// SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (C) 2018 Felix Fietkau <nbd@nbd.name>
  */

drivers/net/wireless/mediatek/mt76/channel.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: ISC
+// SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (C) 2024 Felix Fietkau <nbd@nbd.name>
  */

drivers/net/wireless/mediatek/mt76/debugfs.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: ISC
+// SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
  */
@@ -93,9 +93,9 @@ void mt76_seq_puts_array(struct seq_file *file, const char *str,
 {
 	int i;
 
-	seq_printf(file, "%10s:", str);
+	seq_printf(file, "%16s:", str);
 	for (i = 0; i < len; i++)
-		seq_printf(file, " %2d", val[i]);
+		seq_printf(file, " %4d", val[i]);
 	seq_puts(file, "\n");
 }
 EXPORT_SYMBOL_GPL(mt76_seq_puts_array);

drivers/net/wireless/mediatek/mt76/dma.c

@@ -1,4 +1,4 @@
-// SPDX-License-Identifier: ISC
+// SPDX-License-Identifier: BSD-3-Clause-Clear
 /*
  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
  */
@@ -7,37 +7,6 @@
 #include "mt76.h"
 #include "dma.h"
 
-#if IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED)
-
-#define Q_READ(_q, _field) ({						\
-	u32 _offset = offsetof(struct mt76_queue_regs, _field);		\
-	u32 _val;							\
-	if ((_q)->flags & MT_QFLAG_WED)					\
-		_val = mtk_wed_device_reg_read((_q)->wed,		\
-					       ((_q)->wed_regs +	\
-					        _offset));		\
-	else								\
-		_val = readl(&(_q)->regs->_field);			\
-	_val;								\
-})
-
-#define Q_WRITE(_q, _field, _val)	do {				\
-	u32 _offset = offsetof(struct mt76_queue_regs, _field);		\
-	if ((_q)->flags & MT_QFLAG_WED)					\
-		mtk_wed_device_reg_write((_q)->wed,			\
-					 ((_q)->wed_regs + _offset),	\
-					 _val);				\
-	else								\
-		writel(_val, &(_q)->regs->_field);			\
-} while (0)
-
-#else
-
-#define Q_READ(_q, _field)		readl(&(_q)->regs->_field)
-#define Q_WRITE(_q, _field, _val)	writel(_val, &(_q)->regs->_field)
-
-#endif
-
 static struct mt76_txwi_cache *
 mt76_alloc_txwi(struct mt76_dev *dev)
 {
@@ -220,10 +189,15 @@ static void
 mt76_dma_sync_idx(struct mt76_dev *dev, struct mt76_queue *q)
 {
 	Q_WRITE(q, desc_base, q->desc_dma);
-	if (q->flags & MT_QFLAG_WED_RRO_EN)
+	if ((q->flags & MT_QFLAG_WED_RRO_EN) && !mt76_npu_device_active(dev))
 		Q_WRITE(q, ring_size, MT_DMA_RRO_EN | q->ndesc);
 	else
 		Q_WRITE(q, ring_size, q->ndesc);
+
+	if (mt76_queue_is_npu_tx(q)) {
+		writel(q->desc_dma, &q->regs->desc_base);
+		writel(q->ndesc, &q->regs->ring_size);
+	}
 	q->head = Q_READ(q, dma_idx);
 	q->tail = q->head;
 }
@@ -235,7 +209,7 @@ void mt76_dma_queue_reset(struct mt76_dev *dev, struct mt76_queue *q,
 		return;
 
 	if (!mt76_queue_is_wed_rro_ind(q) &&
-	    !mt76_queue_is_wed_rro_rxdmad_c(q)) {
+	    !mt76_queue_is_wed_rro_rxdmad_c(q) && !mt76_queue_is_npu(q)) {
 		int i;
 
 		/* clear descriptors */
@@ -446,6 +420,7 @@ mt76_dma_tx_cleanup(struct mt76_dev *dev, struct mt76_queue *q, bool flush)
 
 	while (q->queued > 0 && q->tail != last) {
 		mt76_dma_tx_cleanup_idx(dev, q, q->tail, &entry);
+		mt76_npu_txdesc_cleanup(q, q->tail);
 		mt76_queue_tx_complete(dev, q, &entry);
 
 		if (entry.txwi) {
@@ -680,6 +655,10 @@ mt76_dma_tx_queue_skb(struct mt76_phy *phy, struct mt76_queue *q,
 	if (test_bit(MT76_RESET, &phy->state))
 		goto free_skb;
 
+	/* TODO: Take into account unlinear skbs */
+	if (mt76_npu_device_active(dev) && skb_linearize(skb))
+		goto free_skb;
+
 	t = mt76_get_txwi(dev);
 	if (!t)
 		goto free_skb;
@@ -727,6 +706,9 @@ mt76_dma_tx_queue_skb(struct mt76_phy *phy, struct mt76_queue *q,
 	if (ret < 0)
 		goto unmap;
 
+	if (mt76_npu_device_active(dev))
+		return mt76_npu_dma_add_buf(phy, q, skb, &tx_info.buf[1], txwi);
+
 	return mt76_dma_add_buf(dev, q, tx_info.buf, tx_info.nbuf,
 				tx_info.info, tx_info.skb, t);
 
@@ -825,9 +807,17 @@ mt76_dma_alloc_queue(struct mt76_dev *dev, struct mt76_queue *q,
 	q->ndesc = n_desc;
 	q->buf_size = bufsize;
 	q->hw_idx = idx;
+	q->dev = dev;
+
+	if (mt76_queue_is_wed_rro_ind(q))
+		size = sizeof(struct mt76_wed_rro_desc);
+	else if (mt76_queue_is_npu_tx(q))
+		size = sizeof(struct airoha_npu_tx_dma_desc);
+	else if (mt76_queue_is_npu_rx(q))
+		size = sizeof(struct airoha_npu_rx_dma_desc);
+	else
+		size = sizeof(struct mt76_desc);
 
-	size = mt76_queue_is_wed_rro_ind(q) ? sizeof(struct mt76_wed_rro_desc)
-					    : sizeof(struct mt76_desc);
 	q->desc = dmam_alloc_coherent(dev->dma_dev, q->ndesc * size,
 				      &q->desc_dma, GFP_KERNEL);
 	if (!q->desc)
@@ -843,6 +833,7 @@ mt76_dma_alloc_queue(struct mt76_dev *dev, struct mt76_queue *q,
 	if (ret)
 		return ret;
 
+	mt76_npu_queue_setup(dev, q);
 	ret = mt76_wed_dma_setup(dev, q, false);
 	if (ret)
 		return ret;
@@ -870,6 +861,11 @@ mt76_dma_rx_cleanup(struct mt76_dev *dev, struct mt76_queue *q)
 	if (!q->ndesc)
 		return;
 
+	if (mt76_queue_is_npu(q)) {
+		mt76_npu_queue_cleanup(dev, q);
+		return;
+	}
+
 	do {
 		spin_lock_bh(&q->lock);
 		buf = mt76_dma_dequeue(dev, q, true, NULL, NULL, &more, NULL);
@@ -900,7 +896,7 @@ mt76_dma_rx_reset(struct mt76_dev *dev, enum mt76_rxq_id qid)
 		return;
 
 	if (!mt76_queue_is_wed_rro_ind(q) &&
-	    !mt76_queue_is_wed_rro_rxdmad_c(q)) {
+	    !mt76_queue_is_wed_rro_rxdmad_c(q) && !mt76_queue_is_npu(q)) {
 		int i;
 
 		for (i = 0; i < q->ndesc; i++)
@@ -920,7 +916,10 @@ mt76_dma_rx_reset(struct mt76_dev *dev, enum mt76_rxq_id qid)
 		return;
 
 	mt76_dma_sync_idx(dev, q);
-	mt76_dma_rx_fill_buf(dev, q, false);
+	if (mt76_queue_is_npu(q))
+		mt76_npu_fill_rx_queue(dev, q);
+	else
+		mt76_dma_rx_fill(dev, q, false);
 }
 
 static void

drivers/net/wireless/mediatek/mt76/dma.h

@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: ISC */
+/* SPDX-License-Identifier: BSD-3-Clause-Clear */
 /*
  * Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
  */
@@ -46,6 +46,73 @@
 #define MT_FCE_INFO_LEN			4
 #define MT_RX_RXWI_LEN			32
 
+#if IS_ENABLED(CONFIG_NET_MEDIATEK_SOC_WED)
+
+#define Q_READ(_q, _field) ({						\
+	u32 _offset = offsetof(struct mt76_queue_regs, _field);		\
+	u32 _val;							\
+	if ((_q)->flags & MT_QFLAG_WED)					\
+		_val = mtk_wed_device_reg_read((_q)->wed,		\
+					       ((_q)->wed_regs +	\
+						_offset));		\
+	else								\
+		_val = readl(&(_q)->regs->_field);			\
+	_val;								\
+})
+
+#define Q_WRITE(_q, _field, _val)	do {				\
+	u32 _offset = offsetof(struct mt76_queue_regs, _field);		\
+	if ((_q)->flags & MT_QFLAG_WED)					\
+		mtk_wed_device_reg_write((_q)->wed,			\
+					 ((_q)->wed_regs + _offset),	\
+					 _val);				\
+	else								\
+		writel(_val, &(_q)->regs->_field);			\
+} while (0)
+
+#elif IS_ENABLED(CONFIG_MT76_NPU)
+
+#define Q_READ(_q, _field) ({						\
+	u32 _offset = offsetof(struct mt76_queue_regs, _field);		\
+	u32 _val = 0;							\
+	if ((_q)->flags & MT_QFLAG_NPU) {				\
+		struct airoha_npu *npu;					\
+									\
+		rcu_read_lock();					\
+		npu = rcu_dereference(q->dev->mmio.npu);		\
+		if (npu)						\
+			regmap_read(npu->regmap,			\
+				    ((_q)->wed_regs + _offset), &_val);	\
+		rcu_read_unlock();					\
+	} else {							\
+		_val = readl(&(_q)->regs->_field);			\
+	}								\
+	_val;								\
+})
+
+#define Q_WRITE(_q, _field, _val)	do {				\
+	u32 _offset = offsetof(struct mt76_queue_regs, _field);		\
+	if ((_q)->flags & MT_QFLAG_NPU) {				\
+		struct airoha_npu *npu;					\
+									\
+		rcu_read_lock();					\
+		npu = rcu_dereference(q->dev->mmio.npu);		\
+		if (npu)						\
+			regmap_write(npu->regmap,			\
+				     ((_q)->wed_regs + _offset), _val);	\
+		rcu_read_unlock();					\
+	} else {							\
+		writel(_val, &(_q)->regs->_field);			\
+	}								\
+} while (0)
+
+#else
+
+#define Q_READ(_q, _field)		readl(&(_q)->regs->_field)
+#define Q_WRITE(_q, _field, _val)	writel(_val, &(_q)->regs->_field)
+
+#endif
+
 struct mt76_desc {
 	__le32 buf0;
 	__le32 ctrl;