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net: airoha: npu: Add NPU wlan memory initialization commands

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Introduce wlan_init_reserved_memory callback used by MT76 driver during
NPU wlan offloading setup.
This is a preliminary patch to enable wlan flowtable offload for EN7581
SoC with MT76 driver.

Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://patch.msgid.link/20250811-airoha-en7581-wlan-offlaod-v7-2-58823603bb4e@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2025-08-11 17:31:37 +02:00 committed by Jakub Kicinski
parent cebd717d8f
commit 564923b02c
2 changed files with 120 additions and 0 deletions
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82
drivers/net/ethernet/airoha/airoha_npu.c
View File

@ -124,6 +124,13 @@ struct ppe_mbox_data {
};
};
struct wlan_mbox_data {
u32 ifindex:4;
u32 func_type:4;
u32 func_id;
DECLARE_FLEX_ARRAY(u8, d);
};
static int airoha_npu_send_msg(struct airoha_npu *npu, int func_id,
void *p, int size)
{
@ -390,6 +397,80 @@ static int airoha_npu_stats_setup(struct airoha_npu *npu,
return err;
}
static int airoha_npu_wlan_msg_send(struct airoha_npu *npu, int ifindex,
enum airoha_npu_wlan_set_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_SET;
wlan_data->func_id = func_id;
memcpy(wlan_data->d, data, data_len);
err = airoha_npu_send_msg(npu, NPU_FUNC_WIFI, wlan_data, len);
kfree(wlan_data);
return err;
}
static int
airoha_npu_wlan_set_reserved_memory(struct airoha_npu *npu,
int ifindex, const char *name,
enum airoha_npu_wlan_set_cmd func_id)
{
struct device *dev = npu->dev;
struct resource res;
int err;
u32 val;
err = of_reserved_mem_region_to_resource_byname(dev->of_node, name,
&res);
if (err)
return err;
val = res.start;
return airoha_npu_wlan_msg_send(npu, ifindex, func_id, &val,
sizeof(val), GFP_KERNEL);
}
static int airoha_npu_wlan_init_memory(struct airoha_npu *npu)
{
enum airoha_npu_wlan_set_cmd cmd = WLAN_FUNC_SET_WAIT_NPU_BAND0_ONCPU;
u32 val = 0;
int err;
err = airoha_npu_wlan_msg_send(npu, 1, cmd, &val, sizeof(val),
GFP_KERNEL);
if (err)
return err;
cmd = WLAN_FUNC_SET_WAIT_TX_BUF_CHECK_ADDR;
err = airoha_npu_wlan_set_reserved_memory(npu, 0, "tx-bufid", cmd);
if (err)
return err;
cmd = WLAN_FUNC_SET_WAIT_PKT_BUF_ADDR;
err = airoha_npu_wlan_set_reserved_memory(npu, 0, "pkt", cmd);
if (err)
return err;
cmd = WLAN_FUNC_SET_WAIT_TX_PKT_BUF_ADDR;
err = airoha_npu_wlan_set_reserved_memory(npu, 0, "tx-pkt", cmd);
if (err)
return err;
cmd = WLAN_FUNC_SET_WAIT_IS_FORCE_TO_CPU;
return airoha_npu_wlan_msg_send(npu, 0, cmd, &val, sizeof(val),
GFP_KERNEL);
}
struct airoha_npu *airoha_npu_get(struct device *dev, dma_addr_t *stats_addr)
{
struct platform_device *pdev;
@ -493,6 +574,7 @@ static int airoha_npu_probe(struct platform_device *pdev)
npu->ops.ppe_deinit = airoha_npu_ppe_deinit;
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->regmap = devm_regmap_init_mmio(dev, base, &regmap_config);
if (IS_ERR(npu->regmap))

38
drivers/net/ethernet/airoha/airoha_npu.h
View File

@ -6,6 +6,43 @@
#define NPU_NUM_CORES 8
enum airoha_npu_wlan_set_cmd {
WLAN_FUNC_SET_WAIT_PCIE_ADDR,
WLAN_FUNC_SET_WAIT_DESC,
WLAN_FUNC_SET_WAIT_NPU_INIT_DONE,
WLAN_FUNC_SET_WAIT_TRAN_TO_CPU,
WLAN_FUNC_SET_WAIT_BA_WIN_SIZE,
WLAN_FUNC_SET_WAIT_DRIVER_MODEL,
WLAN_FUNC_SET_WAIT_DEL_STA,
WLAN_FUNC_SET_WAIT_DRAM_BA_NODE_ADDR,
WLAN_FUNC_SET_WAIT_PKT_BUF_ADDR,
WLAN_FUNC_SET_WAIT_IS_TEST_NOBA,
WLAN_FUNC_SET_WAIT_FLUSHONE_TIMEOUT,
WLAN_FUNC_SET_WAIT_FLUSHALL_TIMEOUT,
WLAN_FUNC_SET_WAIT_IS_FORCE_TO_CPU,
WLAN_FUNC_SET_WAIT_PCIE_STATE,
WLAN_FUNC_SET_WAIT_PCIE_PORT_TYPE,
WLAN_FUNC_SET_WAIT_ERROR_RETRY_TIMES,
WLAN_FUNC_SET_WAIT_BAR_INFO,
WLAN_FUNC_SET_WAIT_FAST_FLAG,
WLAN_FUNC_SET_WAIT_NPU_BAND0_ONCPU,
WLAN_FUNC_SET_WAIT_TX_RING_PCIE_ADDR,
WLAN_FUNC_SET_WAIT_TX_DESC_HW_BASE,
WLAN_FUNC_SET_WAIT_TX_BUF_SPACE_HW_BASE,
WLAN_FUNC_SET_WAIT_RX_RING_FOR_TXDONE_HW_BASE,
WLAN_FUNC_SET_WAIT_TX_PKT_BUF_ADDR,
WLAN_FUNC_SET_WAIT_INODE_TXRX_REG_ADDR,
WLAN_FUNC_SET_WAIT_INODE_DEBUG_FLAG,
WLAN_FUNC_SET_WAIT_INODE_HW_CFG_INFO,
WLAN_FUNC_SET_WAIT_INODE_STOP_ACTION,
WLAN_FUNC_SET_WAIT_INODE_PCIE_SWAP,
WLAN_FUNC_SET_WAIT_RATELIMIT_CTRL,
WLAN_FUNC_SET_WAIT_HWNAT_INIT,
WLAN_FUNC_SET_WAIT_ARHT_CHIP_INFO,
WLAN_FUNC_SET_WAIT_TX_BUF_CHECK_ADDR,
WLAN_FUNC_SET_WAIT_TOKEN_ID_SIZE,
};
struct airoha_npu {
struct device *dev;
struct regmap *regmap;
@ -29,6 +66,7 @@ struct airoha_npu {
dma_addr_t foe_addr,
u32 entry_size, u32 hash,
bool ppe2);
int (*wlan_init_reserved_memory)(struct airoha_npu *npu);
} ops;
};