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drivers: wifi: siwx91x: Add run time opermode

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This commit enables the device to change its operating mode
at runtime.

Signed-off-by: Arunmani Alagarsamy <arunmani.a@silabs.com>
This commit is contained in:
Arunmani Alagarsamy 2025-02-18 15:05:28 +05:30 • committed by Carles Cufí
commit b578b06970
6 changed files with 267 additions and 113 deletions
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2
soc/silabs/silabs_siwx91x/siwg917/CMakeLists.txt
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@ -2,6 +2,6 @@
# SPDX-License-Identifier: Apache-2.0
zephyr_sources_ifdef(CONFIG_SOC_SERIES_SIWG917 soc.c)
zephyr_sources_ifdef(CONFIG_WISECONNECT_NETWORK_STACK nwp_init.c)
zephyr_sources_ifdef(CONFIG_WISECONNECT_NETWORK_STACK nwp.c)
set(SOC_LINKER_SCRIPT ${CMAKE_CURRENT_SOURCE_DIR}/linker.ld CACHE INTERNAL "")

196
soc/silabs/silabs_siwx91x/siwg917/nwp.c Normal file
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/**
* @file
* @brief Network Processor Initialization for SiWx91x.
*
* This file contains the initialization routine for the (ThreadArch) network processor
* on the SiWx91x platform. The component is responsible for setting up the necessary
* hardware and software components to enable network communication.
*
* Copyright (c) 2025 Silicon Laboratories Inc.
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include <zephyr/net/wifi.h>
#include <zephyr/logging/log.h>
#include "nwp.h"
#include "sl_wifi_callback_framework.h"
#ifdef CONFIG_BT_SILABS_SIWX91X
#include "rsi_ble_common_config.h"
#endif
LOG_MODULE_REGISTER(siwx91x_nwp);
int siwg91x_get_nwp_config(int wifi_oper_mode, sl_wifi_device_configuration_t *get_config)
{
sl_wifi_device_configuration_t default_config = {
.band = SL_SI91X_WIFI_BAND_2_4GHZ,
.region_code = DEFAULT_REGION,
.boot_option = LOAD_NWP_FW,
.boot_config = {
.feature_bit_map = SL_SI91X_FEAT_SECURITY_OPEN | SL_SI91X_FEAT_WPS_DISABLE,
.tcp_ip_feature_bit_map = SL_SI91X_TCP_IP_FEAT_EXTENSION_VALID,
.custom_feature_bit_map = SL_SI91X_CUSTOM_FEAT_EXTENSION_VALID,
.ext_custom_feature_bit_map =
MEMORY_CONFIG |
SL_SI91X_EXT_FEAT_XTAL_CLK,
}
};
__ASSERT(get_config, "get_config cannot be NULL");
sl_si91x_boot_configuration_t *boot_config = &default_config.boot_config;
if (wifi_oper_mode == SL_SI91X_CLIENT_MODE) {
boot_config->oper_mode = SL_SI91X_CLIENT_MODE;
if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X) &&
IS_ENABLED(CONFIG_BT_SILABS_SIWX91X)) {
boot_config->coex_mode = SL_SI91X_WLAN_BLE_MODE;
} else if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X)) {
boot_config->coex_mode = SL_SI91X_WLAN_ONLY_MODE;
} else if (IS_ENABLED(CONFIG_BT_SILABS_SIWX91X)) {
boot_config->coex_mode = SL_SI91X_BLE_MODE;
} else {
/*
* Even if neither WiFi or BLE is used we have to specify a Coex mode
*/
boot_config->coex_mode = SL_SI91X_BLE_MODE;
}
#ifdef CONFIG_WIFI_SILABS_SIWX91X
boot_config->ext_tcp_ip_feature_bit_map = SL_SI91X_CONFIG_FEAT_EXTENSION_VALID;
boot_config->config_feature_bit_map = SL_SI91X_ENABLE_ENHANCED_MAX_PSP;
boot_config->ext_custom_feature_bit_map |=
SL_SI91X_EXT_FEAT_IEEE_80211W |
SL_SI91X_EXT_FEAT_FRONT_END_SWITCH_PINS_ULP_GPIO_4_5_0;
#endif
#ifdef CONFIG_BT_SILABS_SIWX91X
boot_config->ext_custom_feature_bit_map |= SL_SI91X_EXT_FEAT_BT_CUSTOM_FEAT_ENABLE;
boot_config->bt_feature_bit_map |=
SL_SI91X_BT_RF_TYPE | SL_SI91X_ENABLE_BLE_PROTOCOL;
boot_config->ble_feature_bit_map |=
SL_SI91X_BLE_MAX_NBR_PERIPHERALS(RSI_BLE_MAX_NBR_PERIPHERALS) |
SL_SI91X_BLE_MAX_NBR_CENTRALS(RSI_BLE_MAX_NBR_CENTRALS) |
SL_SI91X_BLE_MAX_NBR_ATT_SERV(RSI_BLE_MAX_NBR_ATT_SERV) |
SL_SI91X_BLE_MAX_NBR_ATT_REC(RSI_BLE_MAX_NBR_ATT_REC) |
SL_SI91X_BLE_PWR_INX(RSI_BLE_PWR_INX) |
SL_SI91X_BLE_PWR_SAVE_OPTIONS(RSI_BLE_PWR_SAVE_OPTIONS) |
SL_SI91X_916_BLE_COMPATIBLE_FEAT_ENABLE |
SL_SI91X_FEAT_BLE_CUSTOM_FEAT_EXTENSION_VALID;
boot_config->ble_ext_feature_bit_map |=
SL_SI91X_BLE_NUM_CONN_EVENTS(RSI_BLE_NUM_CONN_EVENTS) |
SL_SI91X_BLE_NUM_REC_BYTES(RSI_BLE_NUM_REC_BYTES) |
SL_SI91X_BLE_ENABLE_ADV_EXTN |
SL_SI91X_BLE_AE_MAX_ADV_SETS(RSI_BLE_AE_MAX_ADV_SETS);
#endif
} else if (wifi_oper_mode == SL_SI91X_ACCESS_POINT_MODE) {
boot_config->oper_mode = SL_SI91X_ACCESS_POINT_MODE;
boot_config->coex_mode = SL_SI91X_WLAN_ONLY_MODE;
if (IS_ENABLED(CONFIG_BT_SILABS_SIWX91X)) {
LOG_WRN("Bluetooth is not supported in AP mode");
}
} else {
return -EINVAL;
}
#ifdef CONFIG_WIFI_SILABS_SIWX91X
if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X_NET_STACK_OFFLOAD)) {
boot_config->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_ICMP;
boot_config->ext_tcp_ip_feature_bit_map |= SL_SI91X_EXT_TCP_IP_WINDOW_SCALING;
boot_config->ext_tcp_ip_feature_bit_map |= SL_SI91X_EXT_TCP_IP_TOTAL_SELECTS(10);
if (IS_ENABLED(CONFIG_NET_IPV6)) {
boot_config->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_IPV6;
if (wifi_oper_mode == SL_SI91X_CLIENT_MODE) {
boot_config->tcp_ip_feature_bit_map |=
SL_SI91X_TCP_IP_FEAT_DHCPV6_CLIENT;
} else if (wifi_oper_mode == SL_SI91X_ACCESS_POINT_MODE) {
boot_config->tcp_ip_feature_bit_map |=
SL_SI91X_TCP_IP_FEAT_DHCPV6_SERVER;
}
}
if (IS_ENABLED(CONFIG_NET_IPV4)) {
if (wifi_oper_mode == SL_SI91X_CLIENT_MODE) {
boot_config->tcp_ip_feature_bit_map |=
SL_SI91X_TCP_IP_FEAT_DHCPV4_CLIENT;
} else if (wifi_oper_mode == SL_SI91X_ACCESS_POINT_MODE) {
boot_config->tcp_ip_feature_bit_map |=
SL_SI91X_TCP_IP_FEAT_DHCPV4_SERVER;
}
}
} else {
boot_config->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_BYPASS;
}
#endif
memcpy(get_config, &default_config, sizeof(default_config));
return 0;
}
int siwx91x_nwp_mode_switch(uint8_t oper_mode)
{
sl_wifi_device_configuration_t nwp_config;
sl_status_t status;
switch (oper_mode) {
case WIFI_STA_MODE:
siwg91x_get_nwp_config(SL_SI91X_CLIENT_MODE, &nwp_config);
break;
case WIFI_AP_MODE:
siwg91x_get_nwp_config(SL_SI91X_ACCESS_POINT_MODE, &nwp_config);
break;
default:
return -EINVAL;
}
/* FIXME: Calling sl_wifi_deinit() impacts Bluetooth if coexistence is enabled */
status = sl_wifi_deinit();
if (status != SL_STATUS_OK) {
return -ETIMEDOUT;
}
status = sl_wifi_init(&nwp_config, NULL, sl_wifi_default_event_handler);
if (status != SL_STATUS_OK) {
return -ETIMEDOUT;
}
return 0;
}
static int siwg917_nwp_init(void)
{
sl_wifi_device_configuration_t network_config;
sl_status_t status;
siwg91x_get_nwp_config(SL_SI91X_CLIENT_MODE, &network_config);
/* TODO: If sl_net_*_profile() functions will be needed for WiFi then call
* sl_net_set_profile() here. Currently these are unused.
*/
status = sl_wifi_init(&network_config, NULL, sl_wifi_default_event_handler);
if (status != SL_STATUS_OK) {
return -EINVAL;
}
return 0;
}
SYS_INIT(siwg917_nwp_init, POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE);
/* IRQn 74 is used for communication with co-processor */
Z_ISR_DECLARE(74, 0, IRQ074_Handler, 0);
/* Co-processor will use value stored in IVT to store its stack.
*
* FIXME: We can't use Z_ISR_DECLARE() to declare this entry
* FIXME: Allow to configure size of buffer
*/
static uint8_t __aligned(8) siwg917_nwp_stack[10 * 1024];
static Z_DECL_ALIGN(struct _isr_list) Z_GENERIC_SECTION(.intList)
__used __isr_siwg917_coprocessor_stack_irq = {
.irq = 30,
.flags = ISR_FLAG_DIRECT,
.func = &siwg917_nwp_stack[sizeof(siwg917_nwp_stack) - 1],
};

25
soc/silabs/silabs_siwx91x/siwg917/nwp.h Normal file
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@ -0,0 +1,25 @@
/*
* Copyright (c) 2025 Silicon Laboratories Inc.
* SPDX-License-Identifier: Apache-2.0
*/
#ifndef SIWG917_NWP_H
#define SIWG917_NWP_H
#include "sl_wifi.h"
#define SIWX91X_INTERFACE_MASK (0x03)
/**
* @brief Switch the Wi-Fi operating modes.
*
* This function switches the mode. If the requested mode is already active,
* no action is performed. Otherwise, it reinitializes the Wi-Fi subsystem to
* apply the new mode.
*
* @param[in] oper_mode Desired Wi-Fi operating mode:
*
* @return 0 on success, or a negative error code on failure:
*/
int siwx91x_nwp_mode_switch(uint8_t oper_mode);
#endif

111
soc/silabs/silabs_siwx91x/siwg917/nwp_init.c
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@ -1,111 +0,0 @@
/**
* @file
* @brief Network Processor Initialization for SiWx91x.
*
* This file contains the initialization routine for the (ThreadArch) network processor
* on the SiWx91x platform. The component is responsible for setting up the necessary
* hardware and software components to enable network communication.
*
* Copyright (c) 2024 Silicon Laboratories Inc.
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include "sl_wifi.h"
#include "sl_wifi_callback_framework.h"
#ifdef CONFIG_BT_SILABS_SIWX91X
#include "rsi_ble_common_config.h"
#endif
static int siwg917_nwp_init(void)
{
sl_wifi_device_configuration_t network_config = {
.boot_option = LOAD_NWP_FW,
.band = SL_SI91X_WIFI_BAND_2_4GHZ,
.region_code = DEFAULT_REGION,
.boot_config = {
.oper_mode = SL_SI91X_CLIENT_MODE,
.tcp_ip_feature_bit_map = SL_SI91X_TCP_IP_FEAT_EXTENSION_VALID,
.ext_tcp_ip_feature_bit_map = SL_SI91X_CONFIG_FEAT_EXTENSION_VALID,
.config_feature_bit_map = SL_SI91X_ENABLE_ENHANCED_MAX_PSP,
.custom_feature_bit_map = SL_SI91X_CUSTOM_FEAT_EXTENSION_VALID,
.ext_custom_feature_bit_map =
MEMORY_CONFIG |
SL_SI91X_EXT_FEAT_XTAL_CLK |
SL_SI91X_EXT_FEAT_FRONT_END_SWITCH_PINS_ULP_GPIO_4_5_0,
}
};
sl_si91x_boot_configuration_t *cfg = &network_config.boot_config;
if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X) && IS_ENABLED(CONFIG_BT_SILABS_SIWX91X)) {
cfg->coex_mode = SL_SI91X_WLAN_BLE_MODE;
} else if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X)) {
cfg->coex_mode = SL_SI91X_WLAN_ONLY_MODE;
} else if (IS_ENABLED(CONFIG_BT_SILABS_SIWX91X)) {
cfg->coex_mode = SL_SI91X_BLE_MODE;
} else {
/*
* Even if neither WiFi or BLE is used we have to specify a Coex mode
*/
cfg->coex_mode = SL_SI91X_BLE_MODE;
}
#ifdef CONFIG_WIFI_SILABS_SIWX91X
cfg->feature_bit_map |= SL_SI91X_FEAT_SECURITY_OPEN | SL_SI91X_FEAT_WPS_DISABLE,
cfg->ext_custom_feature_bit_map |= SL_SI91X_EXT_FEAT_IEEE_80211W;
if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X_NET_STACK_OFFLOAD)) {
cfg->ext_tcp_ip_feature_bit_map |= SL_SI91X_EXT_TCP_IP_WINDOW_SCALING;
cfg->ext_tcp_ip_feature_bit_map |= SL_SI91X_EXT_TCP_IP_TOTAL_SELECTS(10);
cfg->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_ICMP;
if (IS_ENABLED(CONFIG_NET_IPV6)) {
cfg->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_DHCPV6_CLIENT;
cfg->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_IPV6;
}
if (IS_ENABLED(CONFIG_NET_IPV4)) {
cfg->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_DHCPV4_CLIENT;
}
} else {
cfg->tcp_ip_feature_bit_map |= SL_SI91X_TCP_IP_FEAT_BYPASS;
}
#endif
#ifdef CONFIG_BT_SILABS_SIWX91X
cfg->ext_custom_feature_bit_map |= SL_SI91X_EXT_FEAT_BT_CUSTOM_FEAT_ENABLE;
cfg->bt_feature_bit_map |= SL_SI91X_BT_RF_TYPE | SL_SI91X_ENABLE_BLE_PROTOCOL;
cfg->ble_feature_bit_map |= SL_SI91X_BLE_MAX_NBR_PERIPHERALS(RSI_BLE_MAX_NBR_PERIPHERALS) |
SL_SI91X_BLE_MAX_NBR_CENTRALS(RSI_BLE_MAX_NBR_CENTRALS) |
SL_SI91X_BLE_MAX_NBR_ATT_SERV(RSI_BLE_MAX_NBR_ATT_SERV) |
SL_SI91X_BLE_MAX_NBR_ATT_REC(RSI_BLE_MAX_NBR_ATT_REC) |
SL_SI91X_BLE_PWR_INX(RSI_BLE_PWR_INX) |
SL_SI91X_BLE_PWR_SAVE_OPTIONS(RSI_BLE_PWR_SAVE_OPTIONS) |
SL_SI91X_916_BLE_COMPATIBLE_FEAT_ENABLE |
SL_SI91X_FEAT_BLE_CUSTOM_FEAT_EXTENSION_VALID;
cfg->ble_ext_feature_bit_map |= SL_SI91X_BLE_NUM_CONN_EVENTS(RSI_BLE_NUM_CONN_EVENTS) |
SL_SI91X_BLE_NUM_REC_BYTES(RSI_BLE_NUM_REC_BYTES) |
SL_SI91X_BLE_ENABLE_ADV_EXTN |
SL_SI91X_BLE_AE_MAX_ADV_SETS(RSI_BLE_AE_MAX_ADV_SETS);
#endif
/* TODO: If sl_net_*_profile() functions will be needed for WiFi then call
* sl_net_set_profile() here. Currently these are unused.
*/
return sl_wifi_init(&network_config, NULL, sl_wifi_default_event_handler);
}
SYS_INIT(siwg917_nwp_init, POST_KERNEL, CONFIG_KERNEL_INIT_PRIORITY_DEVICE);
/* IRQn 74 is used for communication with co-processor */
Z_ISR_DECLARE(74, 0, IRQ074_Handler, 0);
/* Co-processor will use value stored in IVT to store its stack.
*
* FIXME: We can't use Z_ISR_DECLARE() to declare this entry
* FIXME: Allow to configure size of buffer
*/
static uint8_t __aligned(8) siwg917_nwp_stack[10 * 1024];
static Z_DECL_ALIGN(struct _isr_list) Z_GENERIC_SECTION(.intList)
__used __isr_siwg917_coprocessor_stack_irq = {
.irq = 30,
.flags = ISR_FLAG_DIRECT,
.func = &siwg917_nwp_stack[sizeof(siwg917_nwp_stack) - 1],
};