qcacld-2.0: Add NL event to indicate SSR shutdown is triggered

On Dual-WiFi Platforms, Radio Device 1 (R1 - SDIO interface) should
be functional only if Radio Device 0 (R0 - PCIe interface) is active.

If SSR is indentified on R0, indicate userspace application to unload
R1 on this event and Reload R1 once R0 SSR and reload is complete.

CRs-Fixed: 1046397
Change-Id: I8a06b569fe536bb93dbb37bdb289295bfce62f6e

7 files changed, 42 insertions, 2 deletions

diff --git a/CORE/HDD/inc/wlan_hdd_main.h b/CORE/HDD/inc/wlan_hdd_main.h
index 8d998a205dfd..e3a0e00cdfd0 100644
--- a/CORE/HDD/inc/wlan_hdd_main.h
+++ b/CORE/HDD/inc/wlan_hdd_main.h
@@ -2247,6 +2247,6 @@ int hdd_reassoc(hdd_adapter_t *pAdapter, const tANI_U8 *bssid,
 void hdd_sap_restart_handle(struct work_struct *work);
 
 void hdd_set_rps_cpu_mask(hdd_context_t *hdd_ctx);
-
 void hdd_initialize_adapter_common(hdd_adapter_t *adapter);
+void hdd_svc_fw_shutdown_ind(struct device *dev);
 #endif    // end #if !defined( WLAN_HDD_MAIN_H )
diff --git a/CORE/HDD/src/wlan_hdd_early_suspend.c b/CORE/HDD/src/wlan_hdd_early_suspend.c
index e62ddd1a772b..1e720d4a2b05 100644
--- a/CORE/HDD/src/wlan_hdd_early_suspend.c
+++ b/CORE/HDD/src/wlan_hdd_early_suspend.c
@@ -1946,6 +1946,31 @@ static void hdd_ssr_timer_start(int msec)
     ssr_timer_started = true;
 }
 
+/**
+ * hdd_svc_fw_shutdown_ind() - API to send FW SHUTDOWN IND to Userspace
+ *
+ * @dev: Device Pointer
+ *
+ * Return: None
+ */
+void hdd_svc_fw_shutdown_ind(struct device *dev)
+{
+	v_CONTEXT_t g_context;
+	hdd_context_t *hdd_ctx;
+
+	g_context = vos_get_global_context(VOS_MODULE_ID_SYS, NULL);
+
+	if(!g_context)
+		return;
+
+	hdd_ctx = (hdd_context_t *)vos_get_context(VOS_MODULE_ID_HDD,
+						   g_context);
+
+	hdd_ctx ? wlan_hdd_send_svc_nlink_msg(hdd_ctx->radio_index,
+					      WLAN_SVC_FW_SHUTDOWN_IND,
+					      NULL, 0) : 0;
+}
+
 /* the HDD interface to WLAN driver shutdown,
  * the primary shutdown function in SSR
  */
diff --git a/CORE/HDD/src/wlan_hdd_main.c b/CORE/HDD/src/wlan_hdd_main.c
index b4f5b71f1428..a34d971d8390 100644
--- a/CORE/HDD/src/wlan_hdd_main.c
+++ b/CORE/HDD/src/wlan_hdd_main.c
@@ -17130,6 +17130,7 @@ void wlan_hdd_send_svc_nlink_msg(int radio, int type, void *data, int len)
 
     switch(type) {
         case WLAN_SVC_FW_CRASHED_IND:
+        case WLAN_SVC_FW_SHUTDOWN_IND:
         case WLAN_SVC_LTE_COEX_IND:
         case WLAN_SVC_WLAN_AUTO_SHUTDOWN_IND:
         case WLAN_SVC_WLAN_AUTO_SHUTDOWN_CANCEL_IND:
diff --git a/CORE/SERVICES/BMI/ol_fw.c b/CORE/SERVICES/BMI/ol_fw.c
index a2e81e351cec..af7add647bb0 100644
--- a/CORE/SERVICES/BMI/ol_fw.c
+++ b/CORE/SERVICES/BMI/ol_fw.c
@@ -1502,6 +1502,7 @@ void ol_target_failure(void *instance, A_STATUS status)
 		return;
 
 #if  defined(CONFIG_CNSS) || defined(HIF_SDIO)
+	vos_svc_fw_shutdown_ind(scn->adf_dev->dev);
 	/* Collect the RAM dump through a workqueue */
 	if (scn->enableRamdumpCollection)
 		ol_schedule_ramdump_work(scn);
diff --git a/CORE/SVC/external/wlan_nlink_common.h b/CORE/SVC/external/wlan_nlink_common.h
index 0dd626479352..0b3604cbc43e 100644
--- a/CORE/SVC/external/wlan_nlink_common.h
+++ b/CORE/SVC/external/wlan_nlink_common.h
@@ -100,6 +100,7 @@
 #define WLAN_SVC_WLAN_TP_TX_IND     0x10B
 #define WLAN_SVC_WLAN_AUTO_SHUTDOWN_CANCEL_IND 0x10C
 #define WLAN_SVC_WLAN_RADIO_INDEX 0x10D
+#define WLAN_SVC_FW_SHUTDOWN_IND  0x10E
 
 #define WLAN_SVC_MAX_SSID_LEN    32
 #define WLAN_SVC_MAX_BSSID_LEN   6
diff --git a/CORE/VOSS/inc/vos_api.h b/CORE/VOSS/inc/vos_api.h
index 8783790bf14d..191b3cee5f48 100644
--- a/CORE/VOSS/inc/vos_api.h
+++ b/CORE/VOSS/inc/vos_api.h
@@ -376,5 +376,5 @@ void vos_set_fatal_event(bool value);
 void vos_pkt_stats_to_logger_thread(void *pl_hdr, void *pkt_dump, void *data);
 int vos_get_radio_index(void);
 int vos_set_radio_index(int radio_index);
-
+void vos_svc_fw_shutdown_ind(struct device *dev);
 #endif // if !defined __VOS_API_H
diff --git a/CORE/VOSS/src/vos_api.c b/CORE/VOSS/src/vos_api.c
index 127cde642488..01e241b72bb0 100644
--- a/CORE/VOSS/src/vos_api.c
+++ b/CORE/VOSS/src/vos_api.c
@@ -3064,3 +3064,15 @@ int vos_set_radio_index(int radio_index)
 	gpVosContext->radio_index = radio_index;
 	return 0;
 }
+
+/**
+ * vos_svc_fw_shutdown_ind() - API to send userspace about FW crash
+ *
+ * @data: Device Pointer
+ *
+ * Return: None
+*/
+void vos_svc_fw_shutdown_ind(struct device *dev)
+{
+	hdd_svc_fw_shutdown_ind(dev);
+}