qcacld-3.0: Send user space about FW CRASHED indication

In function ol_target_failure(), if enable_self_recovery is true,
fw_indication_work_handler() will be called. Ramdump collection
will not be executed. But for no CNSS module platform, recovery flag
is neither cleaned, no any FW indication is sent to user space.
Even enable_self_recovery is false, no FW crashed indication sent
to user space.

So, call function ol_check_clean_recovery_flag() to clean recovery
flag, and send FW CRASHED indication to user space by function
ol_target_failure().

Change-Id: I44396caf4972dc267d60757c479e4681f8885de5
CRs-Fixed: 2482596

core/bmi/inc/bmi.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2013-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2013-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -54,6 +54,15 @@ QDF_STATUS ol_cds_init(qdf_device_t qdf_dev, void *hif_ctx);
 void ol_cds_free(void);
 void ol_init_ini_config(struct ol_context *ol_ctx,
 			struct ol_config_info *cfg);
+/**
+ * ol_set_fw_crashed_cb() - set firmware crashed callback
+ * @ol_ctx: ol context
+ * @callback_fn: fw crashed callback function
+ *
+ * Return: None
+ */
+void ol_set_fw_crashed_cb(struct ol_context *ol_ctx,
+			  void (*callback_fn)(void));
 void bmi_cleanup(struct ol_context *scn);
 QDF_STATUS bmi_done(struct ol_context *ol_ctx);
 void bmi_target_ready(struct hif_opaque_softc *scn, void *cfg_ctx);
@@ -76,6 +85,11 @@ ol_init_ini_config(struct ol_context *ol_ctx, struct ol_config_info *cfg)
 {
 }
 
+static inline void
+ol_set_fw_crashed_cb(struct ol_context *ol_ctx, void (*callback_fn)(void))
+{
+}
+
 static inline void bmi_cleanup(struct ol_context *scn)
 {
 }

core/bmi/src/i_bmi.h

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2014-2018 The Linux Foundation. All rights reserved.
+ * Copyright (c) 2014-2019 The Linux Foundation. All rights reserved.
  *
  * Permission to use, copy, modify, and/or distribute this software for
  * any purpose with or without fee is hereby granted, provided that the
@@ -154,6 +154,7 @@ struct bmi_info {
  * @ramdump_work: Work for Ramdump collection
  * @fw_indication_work: Work for Fw inciation
  * @tgt_def: Target Defnition pointer
+ * @fw_crashed_cb: Callback for firmware crashed ind
  *
  * Structure to hold all ol BMI/Ramdump info
  */
@@ -168,6 +169,7 @@ struct ol_context {
 	struct targetdef_t {
 		struct targetdef_s *targetdef;
 	} tgt_def;
+	void (*fw_crashed_cb)(void);
 };
 
 #define GET_BMI_CONTEXT(ol_ctx) ((struct bmi_info *)ol_ctx)

core/bmi/src/ol_fw.c

@@ -546,13 +546,19 @@ struct ramdump_info {
 
 /**
  * if have platform driver support, reinit will be called by CNSS.
- * recovery flag will be cleaned by reinit function. If not support,
- * clean recovery flag in CLD driver.
+ * recovery flag will be cleaned and CRASHED indication will be sent
+ * to user space by reinit function. If not support, clean recovery
+ * flag and send CRASHED indication in CLD driver.
  */
-static inline void ol_check_clean_recovery_flag(struct device *dev)
+static inline void ol_check_clean_recovery_flag(struct ol_context *ol_ctx)
 {
-	if (!pld_have_platform_driver_support(dev))
+	qdf_device_t qdf_dev = ol_ctx->qdf_dev;
+
+	if (!pld_have_platform_driver_support(qdf_dev->dev)) {
 		cds_set_recovery_in_progress(false);
+		if (ol_ctx->fw_crashed_cb)
+			ol_ctx->fw_crashed_cb();
+	}
 }
 
 #if !defined(QCA_WIFI_3_0)
@@ -646,7 +652,7 @@ void ramdump_work_handler(void *data)
 		BMI_ERR("HifDiagReadiMem FW Dump Area Pointer failed!");
 		ol_copy_ramdump(ramdump_scn);
 		pld_device_crashed(qdf_dev->dev);
-		ol_check_clean_recovery_flag(qdf_dev->dev);
+		ol_check_clean_recovery_flag(ol_ctx);
 
 		return;
 	}
@@ -673,10 +679,10 @@ void ramdump_work_handler(void *data)
 	 */
 	if (cds_is_load_or_unload_in_progress())
 		cds_set_recovery_in_progress(false);
-	else
+	else {
 		pld_device_crashed(qdf_dev->dev);
-
-	ol_check_clean_recovery_flag(qdf_dev->dev);
+		ol_check_clean_recovery_flag(ol_ctx);
+	}
 	return;
 
 out_fail:
@@ -687,7 +693,7 @@ out_fail:
 	else
 		pld_device_crashed(qdf_dev->dev);
 
-	ol_check_clean_recovery_flag(qdf_dev->dev);
+	ol_check_clean_recovery_flag(ol_ctx);
 }
 
 void fw_indication_work_handler(void *data)
@@ -697,6 +703,8 @@ void fw_indication_work_handler(void *data)
 
 	pld_device_self_recovery(qdf_dev->dev,
 				 PLD_REASON_DEFAULT);
+
+	ol_check_clean_recovery_flag(ol_ctx);
 }
 
 void ol_target_failure(void *instance, QDF_STATUS status)
@@ -1921,3 +1929,9 @@ void ol_init_ini_config(struct ol_context *ol_ctx,
 {
 	qdf_mem_copy(&ol_ctx->cfg_info, cfg, sizeof(struct ol_config_info));
 }
+
+void ol_set_fw_crashed_cb(struct ol_context *ol_ctx,
+			  void (*callback_fn)(void))
+{
+	ol_ctx->fw_crashed_cb = callback_fn;
+}

core/hdd/src/wlan_hdd_main.c

@@ -14293,6 +14293,22 @@ void hdd_clean_up_pre_cac_interface(struct hdd_context *hdd_ctx)
 
 }
 
+/**
+ * hdd_svc_fw_crashed_ind() - API to send FW CRASHED IND to Userspace
+ *
+ * Return: void
+ */
+static void hdd_svc_fw_crashed_ind(void)
+{
+	struct hdd_context *hdd_ctx;
+
+	hdd_ctx = cds_get_context(QDF_MODULE_ID_HDD);
+
+	hdd_ctx ? wlan_hdd_send_svc_nlink_msg(hdd_ctx->radio_index,
+					      WLAN_SVC_FW_CRASHED_IND,
+					      NULL, 0) : 0;
+}
+
 /**
  * hdd_update_ol_config - API to update ol configuration parameters
  * @hdd_ctx: HDD context
@@ -14320,6 +14336,7 @@ static void hdd_update_ol_config(struct hdd_context *hdd_ctx)
 	cfg.enable_lpass_support = hdd_lpass_is_supported(hdd_ctx);
 
 	ol_init_ini_config(ol_ctx, &cfg);
+	ol_set_fw_crashed_cb(ol_ctx, hdd_svc_fw_crashed_ind);
 }
 
 #ifdef FEATURE_RUNTIME_PM