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net: airoha: npu: Add wlan_{send,get}_msg NPU callbacks

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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: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250811-airoha-en7581-wlan-offlaod-v7-3-58823603bb4e@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2025-08-11 17:31:38 +02:00 committed by Jakub Kicinski
parent 564923b02c
commit f97fc66185
2 changed files with 74 additions and 0 deletions
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52
drivers/net/ethernet/airoha/airoha_npu.c
View File

@ -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))

22
drivers/net/ethernet/airoha/airoha_npu.h
View File

@ -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;
};