Commit f97fc661 authored by Lorenzo Bianconi's avatar Lorenzo Bianconi Committed by Jakub Kicinski
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net: airoha: npu: Add wlan_{send,get}_msg NPU callbacks 



Introduce wlan_send_msg() and wlan_get_msg() NPU wlan callbacks used
by the wlan driver (MT76) to initialize NPU module registers in order to
offload wireless-wired traffic.
This is a preliminary patch to enable wlan flowtable offload for EN7581
SoC with MT76 driver.

Signed-off-by: default avatarLorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250811-airoha-en7581-wlan-offlaod-v7-3-58823603bb4e@kernel.org


Signed-off-by: default avatarJakub Kicinski <kuba@kernel.org>
parent 564923b0

drivers/net/ethernet/airoha/airoha_npu.c

+52 −0
Original line number Diff line number Diff line
@@ -42,6 +42,22 @@ 
#define REG_CR_MBQ8_CTRL(_n)		(NPU_MBOX_BASE_ADDR + 0x0b0 + ((_n) << 2))

#define REG_CR_NPU_MIB(_n)		(NPU_MBOX_BASE_ADDR + 0x140 + ((_n) << 2))



#define NPU_WLAN_BASE_ADDR		0x30d000



#define REG_IRQ_STATUS			(NPU_WLAN_BASE_ADDR + 0x030)

#define REG_IRQ_RXDONE(_n)		(NPU_WLAN_BASE_ADDR + ((_n) << 2) + 0x034)

#define NPU_IRQ_RX_MASK(_n)		((_n) == 1 ? BIT(17) : BIT(16))



#define REG_TX_BASE(_n)			(NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x080)

#define REG_TX_DSCP_NUM(_n)		(NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x084)

#define REG_TX_CPU_IDX(_n)		(NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x088)

#define REG_TX_DMA_IDX(_n)		(NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x08c)



#define REG_RX_BASE(_n)			(NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x180)

#define REG_RX_DSCP_NUM(_n)		(NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x184)

#define REG_RX_CPU_IDX(_n)		(NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x188)

#define REG_RX_DMA_IDX(_n)		(NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x18c)



#define NPU_TIMER_BASE_ADDR		0x310100

#define REG_WDT_TIMER_CTRL(_n)		(NPU_TIMER_BASE_ADDR + ((_n) * 0x100))

#define WDT_EN_MASK			BIT(25)
@@ -420,6 +436,30 @@ static int airoha_npu_wlan_msg_send(struct airoha_npu *npu, int ifindex, 
	return err;

}



static int airoha_npu_wlan_msg_get(struct airoha_npu *npu, int ifindex,

				   enum airoha_npu_wlan_get_cmd func_id,

				   void *data, int data_len, gfp_t gfp)

{

	struct wlan_mbox_data *wlan_data;

	int err, len;



	len = sizeof(*wlan_data) + data_len;

	wlan_data = kzalloc(len, gfp);

	if (!wlan_data)

		return -ENOMEM;



	wlan_data->ifindex = ifindex;

	wlan_data->func_type = NPU_OP_GET;

	wlan_data->func_id = func_id;



	err = airoha_npu_send_msg(npu, NPU_FUNC_WIFI, wlan_data, len);

	if (!err)

		memcpy(data, wlan_data->d, data_len);

	kfree(wlan_data);



	return err;

}



static int

airoha_npu_wlan_set_reserved_memory(struct airoha_npu *npu,

				    int ifindex, const char *name,
@@ -471,6 +511,15 @@ static int airoha_npu_wlan_init_memory(struct airoha_npu *npu) 
					GFP_KERNEL);

}



static u32 airoha_npu_wlan_queue_addr_get(struct airoha_npu *npu, int qid,

					  bool xmit)

{

	if (xmit)

		return REG_TX_BASE(qid + 2);



	return REG_RX_BASE(qid);

}



struct airoha_npu *airoha_npu_get(struct device *dev, dma_addr_t *stats_addr)

{

	struct platform_device *pdev;
@@ -575,6 +624,9 @@ static int airoha_npu_probe(struct platform_device *pdev) 
	npu->ops.ppe_flush_sram_entries = airoha_npu_ppe_flush_sram_entries;

	npu->ops.ppe_foe_commit_entry = airoha_npu_foe_commit_entry;

	npu->ops.wlan_init_reserved_memory = airoha_npu_wlan_init_memory;

	npu->ops.wlan_send_msg = airoha_npu_wlan_msg_send;

	npu->ops.wlan_get_msg = airoha_npu_wlan_msg_get;

	npu->ops.wlan_get_queue_addr = airoha_npu_wlan_queue_addr_get;



	npu->regmap = devm_regmap_init_mmio(dev, base, &regmap_config);

	if (IS_ERR(npu->regmap))

drivers/net/ethernet/airoha/airoha_npu.h

+22 −0
Original line number Diff line number Diff line
@@ -43,6 +43,20 @@ enum airoha_npu_wlan_set_cmd { 
	WLAN_FUNC_SET_WAIT_TOKEN_ID_SIZE,

};



enum airoha_npu_wlan_get_cmd {

	WLAN_FUNC_GET_WAIT_NPU_INFO,

	WLAN_FUNC_GET_WAIT_LAST_RATE,

	WLAN_FUNC_GET_WAIT_COUNTER,

	WLAN_FUNC_GET_WAIT_DBG_COUNTER,

	WLAN_FUNC_GET_WAIT_RXDESC_BASE,

	WLAN_FUNC_GET_WAIT_WCID_DBG_COUNTER,

	WLAN_FUNC_GET_WAIT_DMA_ADDR,

	WLAN_FUNC_GET_WAIT_RING_SIZE,

	WLAN_FUNC_GET_WAIT_NPU_SUPPORT_MAP,

	WLAN_FUNC_GET_WAIT_MDC_LOCK_ADDRESS,

	WLAN_FUNC_GET_WAIT_NPU_VERSION,

};



struct airoha_npu {

	struct device *dev;

	struct regmap *regmap;
@@ -67,6 +81,14 @@ struct airoha_npu { 
					    u32 entry_size, u32 hash,

					    bool ppe2);

		int (*wlan_init_reserved_memory)(struct airoha_npu *npu);

		int (*wlan_send_msg)(struct airoha_npu *npu, int ifindex,

				     enum airoha_npu_wlan_set_cmd func_id,

				     void *data, int data_len, gfp_t gfp);

		int (*wlan_get_msg)(struct airoha_npu *npu, int ifindex,

				    enum airoha_npu_wlan_get_cmd func_id,

				    void *data, int data_len, gfp_t gfp);

		u32 (*wlan_get_queue_addr)(struct airoha_npu *npu, int qid,

					   bool xmit);

	} ops;

};