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Message-Id: <20250702-airoha-en7581-wlan-offlaod-v1-6-803009700b38@kernel.org>
Date: Wed, 02 Jul 2025 00:23:35 +0200
From: Lorenzo Bianconi <lorenzo@...nel.org>
To: Andrew Lunn <andrew+netdev@...n.ch>,
"David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>
Cc: linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, netdev@...r.kernel.org,
Lorenzo Bianconi <lorenzo@...nel.org>
Subject: [PATCH net-next 6/6] net: airoha: Add airoha_offload.h header
Move NPU definitions to airoha_offload.h in include/linux/soc/airoha/ in
order to allow the MT76 driver to access the callback definitions.
Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
---
drivers/net/ethernet/airoha/airoha_npu.c | 2 +-
drivers/net/ethernet/airoha/airoha_npu.h | 65 -------
drivers/net/ethernet/airoha/airoha_ppe.c | 2 +-
include/linux/soc/airoha/airoha_offload.h | 295 ++++++++++++++++++++++++++++++
4 files changed, 297 insertions(+), 67 deletions(-)
diff --git a/drivers/net/ethernet/airoha/airoha_npu.c b/drivers/net/ethernet/airoha/airoha_npu.c
index 3e30cd424085d882aad98a0e751743de73f135fe..46cc3598defa409f0465de0362883ec0e59280fc 100644
--- a/drivers/net/ethernet/airoha/airoha_npu.c
+++ b/drivers/net/ethernet/airoha/airoha_npu.c
@@ -11,9 +11,9 @@
#include <linux/of_platform.h>
#include <linux/of_reserved_mem.h>
#include <linux/regmap.h>
+#include <linux/soc/airoha/airoha_offload.h>
#include "airoha_eth.h"
-#include "airoha_npu.h"
#define NPU_EN7581_FIRMWARE_DATA "airoha/en7581_npu_data.bin"
#define NPU_EN7581_FIRMWARE_RV32 "airoha/en7581_npu_rv32.bin"
diff --git a/drivers/net/ethernet/airoha/airoha_npu.h b/drivers/net/ethernet/airoha/airoha_npu.h
deleted file mode 100644
index 19cfc6b7fb52f4a176d91c7b39383b4c3e13d777..0000000000000000000000000000000000000000
--- a/drivers/net/ethernet/airoha/airoha_npu.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only */
-/*
- * Copyright (c) 2025 AIROHA Inc
- * Author: Lorenzo Bianconi <lorenzo@...nel.org>
- */
-
-#define NPU_NUM_CORES 8
-#define NPU_NUM_IRQ 6
-
-struct airoha_npu {
- struct device *dev;
- struct regmap *regmap;
-
- struct airoha_npu_core {
- struct airoha_npu *npu;
- /* protect concurrent npu memory accesses */
- spinlock_t lock;
- struct work_struct wdt_work;
- } cores[NPU_NUM_CORES];
-
- int irqs[NPU_NUM_IRQ];
-
- struct airoha_foe_stats __iomem *stats;
-
- struct {
- int (*ppe_init)(struct airoha_npu *npu);
- int (*ppe_deinit)(struct airoha_npu *npu);
- int (*ppe_flush_sram_entries)(struct airoha_npu *npu,
- dma_addr_t foe_addr,
- int sram_num_entries);
- int (*ppe_foe_commit_entry)(struct airoha_npu *npu,
- dma_addr_t foe_addr,
- u32 entry_size, u32 hash,
- bool ppe2);
- int (*wlan_init_reserved_memory)(struct airoha_npu *npu);
- int (*wlan_set_txrx_reg_addr)(struct airoha_npu *npu,
- int ifindex, u32 dir,
- u32 in_counter_addr,
- u32 out_status_addr,
- u32 out_counter_addr);
- int (*wlan_set_pcie_port_type)(struct airoha_npu *npu,
- int ifindex, u32 port_type);
- int (*wlan_set_pcie_addr)(struct airoha_npu *npu, int ifindex,
- u32 addr);
- int (*wlan_set_desc)(struct airoha_npu *npu, int ifindex,
- u32 desc);
- int (*wlan_set_tx_ring_pcie_addr)(struct airoha_npu *npu,
- int ifindex, u32 addr);
- int (*wlan_get_rx_desc_base)(struct airoha_npu *npu,
- int ifindex, u32 *data);
- int (*wlan_set_tx_buf_space_base)(struct airoha_npu *npu,
- int ifindex, u32 addr);
- int (*wlan_set_rx_ring_for_txdone)(struct airoha_npu *npu,
- int ifindex, u32 addr);
- u32 (*wlan_get_queue_addr)(struct airoha_npu *npu, int qid,
- bool xmit);
- void (*wlan_set_irq_status)(struct airoha_npu *npu, u32 val);
- u32 (*wlan_get_irq_status)(struct airoha_npu *npu, int q);
- void (*wlan_enable_irq)(struct airoha_npu *npu, int q);
- void (*wlan_disable_irq)(struct airoha_npu *npu, int q);
- } ops;
-};
-
-struct airoha_npu *airoha_npu_get(struct device *dev, dma_addr_t *stats_addr);
-void airoha_npu_put(struct airoha_npu *npu);
diff --git a/drivers/net/ethernet/airoha/airoha_ppe.c b/drivers/net/ethernet/airoha/airoha_ppe.c
index c354d536bc66e97ab853792e4ab4273283d2fb91..5d12bde6b20a89b3037ae4405b383d75307e8239 100644
--- a/drivers/net/ethernet/airoha/airoha_ppe.c
+++ b/drivers/net/ethernet/airoha/airoha_ppe.c
@@ -7,10 +7,10 @@
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <linux/rhashtable.h>
+#include <linux/soc/airoha/airoha_offload.h>
#include <net/ipv6.h>
#include <net/pkt_cls.h>
-#include "airoha_npu.h"
#include "airoha_regs.h"
#include "airoha_eth.h"
diff --git a/include/linux/soc/airoha/airoha_offload.h b/include/linux/soc/airoha/airoha_offload.h
new file mode 100644
index 0000000000000000000000000000000000000000..d2353da154d7ab1ae97901a46062ef49fcefa74d
--- /dev/null
+++ b/include/linux/soc/airoha/airoha_offload.h
@@ -0,0 +1,295 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Copyright (c) 2025 AIROHA Inc
+ * Author: Lorenzo Bianconi <lorenzo@...nel.org>
+ */
+#ifndef AIROHA_OFFLOAD_H
+#define AIROHA_OFFLOAD_H
+
+#define NPU_NUM_CORES 8
+#define NPU_NUM_IRQ 6
+#define NPU_RX0_DESC_NUM 512
+#define NPU_RX1_DESC_NUM 512
+
+/* CTRL */
+#define NPU_RX_DMA_DESC_LAST_MASK BIT(29)
+#define NPU_RX_DMA_DESC_LEN_MASK GENMASK(28, 15)
+#define NPU_RX_DMA_DESC_CUR_LEN_MASK GENMASK(14, 1)
+#define NPU_RX_DMA_DESC_DONE_MASK BIT(0)
+/* INFO */
+#define NPU_RX_DMA_PKT_COUNT_MASK GENMASK(31, 28)
+#define NPU_RX_DMA_PKT_ID_MASK GENMASK(28, 26)
+#define NPU_RX_DMA_SRC_PORT_MASK GENMASK(25, 21)
+#define NPU_RX_DMA_CRSN_MASK GENMASK(20, 16)
+#define NPU_RX_DMA_FOE_ID_MASK GENMASK(15, 0)
+/* DATA */
+#define NPU_RX_DMA_SID_MASK GENMASK(31, 16)
+#define NPU_RX_DMA_FRAG_TYPE_MASK GENMASK(15, 14)
+#define NPU_RX_DMA_PRIORITY_MASK GENMASK(13, 10)
+#define NPU_RX_DMA_RADIO_ID_MASK GENMASK(9, 6)
+#define NPU_RX_DMA_VAP_ID_MASK GENMASK(5, 2)
+#define NPU_RX_DMA_FRAME_TYPE_MASK GENMASK(1, 0)
+
+struct airoha_npu_rx_dma_desc {
+ u32 ctrl;
+ u32 info;
+ u32 data;
+ u32 addr;
+ u64 rsv;
+} __packed;
+
+/* CTRL */
+#define NPU_TX_DMA_DESC_SCHED_MASK BIT(31)
+#define NPU_TX_DMA_DESC_LEN_MASK GENMASK(30, 18)
+#define NPU_TX_DMA_DESC_VEND_LEN_MASK GENMASK(17, 1)
+#define NPU_TX_DMA_DESC_DONE_MASK BIT(0)
+
+#define NPU_TXWI_LEN 192
+
+struct airoha_npu_tx_dma_desc {
+ u32 ctrl;
+ u32 addr;
+ u64 rsv;
+ u8 txwi[NPU_TXWI_LEN];
+} __packed;
+
+struct airoha_npu {
+#if (IS_BUILTIN(CONFIG_NET_AIROHA_NPU) || IS_MODULE(CONFIG_NET_AIROHA_NPU))
+ struct device *dev;
+ struct regmap *regmap;
+
+ struct airoha_npu_core {
+ struct airoha_npu *npu;
+ /* protect concurrent npu memory accesses */
+ spinlock_t lock;
+ struct work_struct wdt_work;
+ } cores[NPU_NUM_CORES];
+
+ int irqs[NPU_NUM_IRQ];
+
+ struct airoha_foe_stats __iomem *stats;
+
+ struct {
+ int (*ppe_init)(struct airoha_npu *npu);
+ int (*ppe_deinit)(struct airoha_npu *npu);
+ int (*ppe_flush_sram_entries)(struct airoha_npu *npu,
+ dma_addr_t foe_addr,
+ int sram_num_entries);
+ int (*ppe_foe_commit_entry)(struct airoha_npu *npu,
+ dma_addr_t foe_addr,
+ u32 entry_size, u32 hash,
+ bool ppe2);
+ int (*wlan_init_reserved_memory)(struct airoha_npu *npu);
+ int (*wlan_set_txrx_reg_addr)(struct airoha_npu *npu,
+ int ifindex, u32 dir,
+ u32 in_counter_addr,
+ u32 out_status_addr,
+ u32 out_counter_addr);
+ int (*wlan_set_pcie_port_type)(struct airoha_npu *npu,
+ int ifindex, u32 port_type);
+ int (*wlan_set_pcie_addr)(struct airoha_npu *npu, int ifindex,
+ u32 addr);
+ int (*wlan_set_desc)(struct airoha_npu *npu, int ifindex,
+ u32 desc);
+ int (*wlan_set_tx_ring_pcie_addr)(struct airoha_npu *npu,
+ int ifindex, u32 addr);
+ int (*wlan_get_rx_desc_base)(struct airoha_npu *npu,
+ int ifindex, u32 *data);
+ int (*wlan_set_tx_buf_space_base)(struct airoha_npu *npu,
+ int ifindex, u32 addr);
+ int (*wlan_set_rx_ring_for_txdone)(struct airoha_npu *npu,
+ int ifindex, u32 addr);
+ u32 (*wlan_get_queue_addr)(struct airoha_npu *npu, int qid,
+ bool xmit);
+ void (*wlan_set_irq_status)(struct airoha_npu *npu, u32 val);
+ u32 (*wlan_get_irq_status)(struct airoha_npu *npu, int q);
+ void (*wlan_enable_irq)(struct airoha_npu *npu, int q);
+ void (*wlan_disable_irq)(struct airoha_npu *npu, int q);
+ } ops;
+#endif
+};
+
+#if (IS_BUILTIN(CONFIG_NET_AIROHA_NPU) || IS_MODULE(CONFIG_NET_AIROHA_NPU))
+struct airoha_npu *airoha_npu_get(struct device *dev, dma_addr_t *stats_addr);
+void airoha_npu_put(struct airoha_npu *npu);
+
+static inline int airoha_npu_wlan_init_reserved_memory(struct airoha_npu *npu)
+{
+ return npu->ops.wlan_init_reserved_memory(npu);
+}
+
+static inline int airoha_npu_wlan_set_txrx_reg_addr(struct airoha_npu *npu,
+ int ifindex, u32 dir,
+ u32 in_counter_addr,
+ u32 out_status_addr,
+ u32 out_counter_addr)
+{
+ return npu->ops.wlan_set_txrx_reg_addr(npu, ifindex, dir,
+ in_counter_addr,
+ out_status_addr,
+ out_counter_addr);
+}
+
+static inline int airoha_npu_wlan_set_pcie_port_type(struct airoha_npu *npu,
+ int ifindex,
+ u32 port_type)
+{
+ return npu->ops.wlan_set_pcie_port_type(npu, ifindex, port_type);
+}
+
+static inline int airoha_npu_wlan_set_pcie_addr(struct airoha_npu *npu,
+ int ifindex, u32 addr)
+{
+ return npu->ops.wlan_set_pcie_addr(npu, ifindex, addr);
+}
+
+static inline int airoha_npu_wlan_set_desc(struct airoha_npu *npu, int ifindex,
+ u32 desc)
+{
+ return npu->ops.wlan_set_desc(npu, ifindex, desc);
+}
+
+static inline int airoha_npu_wlan_set_tx_ring_pcie_addr(struct airoha_npu *npu,
+ int ifindex, u32 addr)
+{
+ return npu->ops.wlan_set_tx_ring_pcie_addr(npu, ifindex, addr);
+}
+
+static inline int airoha_npu_wlan_get_rx_desc_base(struct airoha_npu *npu, int ifindex,
+ u32 *data)
+{
+ return npu->ops.wlan_get_rx_desc_base(npu, ifindex, data);
+}
+
+static inline int airoha_npu_wlan_set_tx_buf_space_base(struct airoha_npu *npu,
+ int ifindex, u32 addr)
+{
+ return npu->ops.wlan_set_tx_buf_space_base(npu, ifindex, addr);
+}
+
+static inline int airoha_npu_wlan_set_rx_ring_for_txdone(struct airoha_npu *npu,
+ int ifindex, u32 addr)
+{
+ return npu->ops.wlan_set_rx_ring_for_txdone(npu, ifindex, addr);
+}
+
+static inline u32 airoha_npu_wlan_get_queue_addr(struct airoha_npu *npu, int qid,
+ bool xmit)
+{
+ return npu->ops.wlan_get_queue_addr(npu, qid, xmit);
+}
+
+static inline void airoha_npu_wlan_set_irq_status(struct airoha_npu *npu,
+ u32 val)
+{
+ npu->ops.wlan_set_irq_status(npu, val);
+}
+
+static inline u32 airoha_npu_wlan_get_irq_status(struct airoha_npu *npu, int q)
+{
+ return npu->ops.wlan_get_irq_status(npu, q);
+}
+
+static inline void airoha_npu_wlan_enable_irq(struct airoha_npu *npu, int q)
+{
+ npu->ops.wlan_enable_irq(npu, q);
+}
+
+static inline void airoha_npu_wlan_disable_irq(struct airoha_npu *npu, int q)
+{
+ npu->ops.wlan_disable_irq(npu, q);
+}
+#else
+static inline struct airoha_npu *airoha_npu_get(struct device *dev,
+ dma_addr_t *foe_stats_addr)
+{
+ return NULL;
+}
+
+static inline void airoha_npu_put(struct airoha_npu *npu)
+{
+}
+
+static inline int airoha_npu_wlan_init_reserved_memory(struct airoha_npu *npu)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int airoha_npu_wlan_set_txrx_reg_addr(struct airoha_npu *npu,
+ int ifindex, u32 dir,
+ u32 in_counter_addr,
+ u32 out_status_addr,
+ u32 out_counter_addr)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int airoha_npu_wlan_set_pcie_port_type(struct airoha_npu *npu,
+ int ifindex, u32 port_type)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int airoha_npu_wlan_set_pcie_addr(struct airoha_npu *npu,
+ int ifindex, u32 addr)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int airoha_npu_wlan_set_desc(struct airoha_npu *npu, int ifindex,
+ u32 desc)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int airoha_npu_wlan_set_tx_ring_pcie_addr(struct airoha_npu *npu,
+ int ifindex, u32 addr)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int airoha_npu_wlan_get_rx_desc_base(struct airoha_npu *npu,
+ int ifindex, u32 *data)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int airoha_npu_wlan_set_tx_buf_space_base(struct airoha_npu *npu,
+ int ifindex, u32 addr)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline int airoha_npu_wlan_set_rx_ring_for_txdone(struct airoha_npu *npu,
+ int ifindex, u32 addr)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline u32 airoha_npu_wlan_get_queue_addr(struct airoha_npu *npu,
+ int qid, bool xmit)
+{
+ return 0;
+}
+
+static inline void airoha_npu_wlan_set_irq_status(struct airoha_npu *npu,
+ u32 val)
+{
+}
+
+static inline u32 airoha_npu_wlan_get_irq_status(struct airoha_npu *npu,
+ int q)
+{
+ return 0;
+}
+
+static inline void airoha_npu_wlan_enable_irq(struct airoha_npu *npu, int q)
+{
+}
+
+static inline void airoha_npu_wlan_disable_irq(struct airoha_npu *npu, int q)
+{
+}
+#endif
+
+#endif /* AIROHA_OFFLOAD_H */
--
2.50.0
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