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1 From f97fc66185b2004ad5f393f78b3e645009ddd1d0 Mon Sep 17 00:00:00 2001
2 From: Lorenzo Bianconi <lorenzo@kernel.org>
3 Date: Mon, 11 Aug 2025 17:31:38 +0200
4 Subject: [PATCH 2/6] net: airoha: npu: Add wlan_{send,get}_msg NPU callbacks
5
6 Introduce wlan_send_msg() and wlan_get_msg() NPU wlan callbacks used
7 by the wlan driver (MT76) to initialize NPU module registers in order to
8 offload wireless-wired traffic.
9 This is a preliminary patch to enable wlan flowtable offload for EN7581
10 SoC with MT76 driver.
11
12 Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
13 Link: https://patch.msgid.link/20250811-airoha-en7581-wlan-offlaod-v7-3-58823603bb4e@kernel.org
14 Signed-off-by: Jakub Kicinski <kuba@kernel.org>
15 ---
16 drivers/net/ethernet/airoha/airoha_npu.c | 52 ++++++++++++++++++++++++
17 drivers/net/ethernet/airoha/airoha_npu.h | 22 ++++++++++
18 2 files changed, 74 insertions(+)
19
20 --- a/drivers/net/ethernet/airoha/airoha_npu.c
21 +++ b/drivers/net/ethernet/airoha/airoha_npu.c
22 @@ -42,6 +42,22 @@
23 #define REG_CR_MBQ8_CTRL(_n) (NPU_MBOX_BASE_ADDR + 0x0b0 + ((_n) << 2))
24 #define REG_CR_NPU_MIB(_n) (NPU_MBOX_BASE_ADDR + 0x140 + ((_n) << 2))
25
26 +#define NPU_WLAN_BASE_ADDR 0x30d000
27 +
28 +#define REG_IRQ_STATUS (NPU_WLAN_BASE_ADDR + 0x030)
29 +#define REG_IRQ_RXDONE(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 2) + 0x034)
30 +#define NPU_IRQ_RX_MASK(_n) ((_n) == 1 ? BIT(17) : BIT(16))
31 +
32 +#define REG_TX_BASE(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x080)
33 +#define REG_TX_DSCP_NUM(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x084)
34 +#define REG_TX_CPU_IDX(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x088)
35 +#define REG_TX_DMA_IDX(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x08c)
36 +
37 +#define REG_RX_BASE(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x180)
38 +#define REG_RX_DSCP_NUM(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x184)
39 +#define REG_RX_CPU_IDX(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x188)
40 +#define REG_RX_DMA_IDX(_n) (NPU_WLAN_BASE_ADDR + ((_n) << 4) + 0x18c)
41 +
42 #define NPU_TIMER_BASE_ADDR 0x310100
43 #define REG_WDT_TIMER_CTRL(_n) (NPU_TIMER_BASE_ADDR + ((_n) * 0x100))
44 #define WDT_EN_MASK BIT(25)
45 @@ -420,6 +436,30 @@ static int airoha_npu_wlan_msg_send(stru
46 return err;
47 }
48
49 +static int airoha_npu_wlan_msg_get(struct airoha_npu *npu, int ifindex,
50 + enum airoha_npu_wlan_get_cmd func_id,
51 + void *data, int data_len, gfp_t gfp)
52 +{
53 + struct wlan_mbox_data *wlan_data;
54 + int err, len;
55 +
56 + len = sizeof(*wlan_data) + data_len;
57 + wlan_data = kzalloc(len, gfp);
58 + if (!wlan_data)
59 + return -ENOMEM;
60 +
61 + wlan_data->ifindex = ifindex;
62 + wlan_data->func_type = NPU_OP_GET;
63 + wlan_data->func_id = func_id;
64 +
65 + err = airoha_npu_send_msg(npu, NPU_FUNC_WIFI, wlan_data, len);
66 + if (!err)
67 + memcpy(data, wlan_data->d, data_len);
68 + kfree(wlan_data);
69 +
70 + return err;
71 +}
72 +
73 static int
74 airoha_npu_wlan_set_reserved_memory(struct airoha_npu *npu,
75 int ifindex, const char *name,
76 @@ -471,6 +511,15 @@ static int airoha_npu_wlan_init_memory(s
77 GFP_KERNEL);
78 }
79
80 +static u32 airoha_npu_wlan_queue_addr_get(struct airoha_npu *npu, int qid,
81 + bool xmit)
82 +{
83 + if (xmit)
84 + return REG_TX_BASE(qid + 2);
85 +
86 + return REG_RX_BASE(qid);
87 +}
88 +
89 struct airoha_npu *airoha_npu_get(struct device *dev, dma_addr_t *stats_addr)
90 {
91 struct platform_device *pdev;
92 @@ -575,6 +624,9 @@ static int airoha_npu_probe(struct platf
93 npu->ops.ppe_flush_sram_entries = airoha_npu_ppe_flush_sram_entries;
94 npu->ops.ppe_foe_commit_entry = airoha_npu_foe_commit_entry;
95 npu->ops.wlan_init_reserved_memory = airoha_npu_wlan_init_memory;
96 + npu->ops.wlan_send_msg = airoha_npu_wlan_msg_send;
97 + npu->ops.wlan_get_msg = airoha_npu_wlan_msg_get;
98 + npu->ops.wlan_get_queue_addr = airoha_npu_wlan_queue_addr_get;
99
100 npu->regmap = devm_regmap_init_mmio(dev, base, &regmap_config);
101 if (IS_ERR(npu->regmap))
102 --- a/drivers/net/ethernet/airoha/airoha_npu.h
103 +++ b/drivers/net/ethernet/airoha/airoha_npu.h
104 @@ -43,6 +43,20 @@ enum airoha_npu_wlan_set_cmd {
105 WLAN_FUNC_SET_WAIT_TOKEN_ID_SIZE,
106 };
107
108 +enum airoha_npu_wlan_get_cmd {
109 + WLAN_FUNC_GET_WAIT_NPU_INFO,
110 + WLAN_FUNC_GET_WAIT_LAST_RATE,
111 + WLAN_FUNC_GET_WAIT_COUNTER,
112 + WLAN_FUNC_GET_WAIT_DBG_COUNTER,
113 + WLAN_FUNC_GET_WAIT_RXDESC_BASE,
114 + WLAN_FUNC_GET_WAIT_WCID_DBG_COUNTER,
115 + WLAN_FUNC_GET_WAIT_DMA_ADDR,
116 + WLAN_FUNC_GET_WAIT_RING_SIZE,
117 + WLAN_FUNC_GET_WAIT_NPU_SUPPORT_MAP,
118 + WLAN_FUNC_GET_WAIT_MDC_LOCK_ADDRESS,
119 + WLAN_FUNC_GET_WAIT_NPU_VERSION,
120 +};
121 +
122 struct airoha_npu {
123 struct device *dev;
124 struct regmap *regmap;
125 @@ -67,6 +81,14 @@ struct airoha_npu {
126 u32 entry_size, u32 hash,
127 bool ppe2);
128 int (*wlan_init_reserved_memory)(struct airoha_npu *npu);
129 + int (*wlan_send_msg)(struct airoha_npu *npu, int ifindex,
130 + enum airoha_npu_wlan_set_cmd func_id,
131 + void *data, int data_len, gfp_t gfp);
132 + int (*wlan_get_msg)(struct airoha_npu *npu, int ifindex,
133 + enum airoha_npu_wlan_get_cmd func_id,
134 + void *data, int data_len, gfp_t gfp);
135 + u32 (*wlan_get_queue_addr)(struct airoha_npu *npu, int qid,
136 + bool xmit);
137 } ops;
138 };
139
Staging tree of David Bauer