qcacld: Send WMI_WOW_HOSTWAKEUP_FROM_SLEEP_CMDID from PCIe Resume

AXI bus errors are seen when host queues tx packets before FW
completly resumes.

In Cfg80211_resume, tx queues are enabled before host sends
WMI_WOW_HOSTWAKEUP_FROM_SLEEP_CMDID to FW.

Some Tx Packets are queued to target before target resumes.

FW drops all the ack for those packets queued before it
recieves WMI_WOW_HOSTWAKEUP_FROM_SLEEP_CMDID.

Host will never be able to free the buffers allocated for Tx
Frames which are sent before the WMI_WOW_HOSTWAKEUP_FROM_SLEEP_CMDID.

Send WMI_WOW_HOSTWAKEUP_FROM_SLEEP_CMDID to FW in hif_pci_resume
instead in cfg80211_resume.

Change-Id: Ica21c0d1105cf72e97f9010634ff5d2d68a96d36
CRs-Fixed: 633989

3 files changed, 45 insertions, 0 deletions

diff --git a/CORE/SERVICES/COMMON/wma_api.h b/CORE/SERVICES/COMMON/wma_api.h
index c145fab6aafd..3b392d5113ac 100644
--- a/CORE/SERVICES/COMMON/wma_api.h
+++ b/CORE/SERVICES/COMMON/wma_api.h
@@ -126,6 +126,7 @@ VOS_STATUS WMA_GetWcnssSoftwareVersion(v_PVOID_t pvosGCtx, tANI_U8 *pVersion,
 int wma_suspend_target(WMA_HANDLE handle, int disable_target_intr);
 void wma_target_suspend_acknowledge(void *context);
 int wma_resume_target(WMA_HANDLE handle);
+int wma_disable_wow_in_fw(WMA_HANDLE handle);
 int wma_is_wow_mode_selected(WMA_HANDLE handle);
 int wma_enable_wow_in_fw(WMA_HANDLE handle);
 #endif
diff --git a/CORE/SERVICES/HIF/PCIe/if_pci.c b/CORE/SERVICES/HIF/PCIe/if_pci.c
index b9be432a0b9f..c118d1f4bd90 100644
--- a/CORE/SERVICES/HIF/PCIe/if_pci.c
+++ b/CORE/SERVICES/HIF/PCIe/if_pci.c
@@ -1664,6 +1664,9 @@ hif_pci_resume(struct pci_dev *pdev)
         (val == PM_EVENT_HIBERNATE || val == PM_EVENT_SUSPEND)) {
         return wma_resume_target(temp_module);
     }
+    else if (wma_disable_wow_in_fw(temp_module))
+        return (-1);
+
 
     return 0;
 }
diff --git a/CORE/SERVICES/WMA/wma.c b/CORE/SERVICES/WMA/wma.c
index 091650d9f925..36b111dba792 100644
--- a/CORE/SERVICES/WMA/wma.c
+++ b/CORE/SERVICES/WMA/wma.c
@@ -12869,6 +12869,47 @@ static VOS_STATUS wma_resume_req(tp_wma_handle wma, tpSirWlanResumeParam info)
 }
 
 /*
+	 Disable wow in PCIe resume context.
+*/
+
+int wma_disable_wow_in_fw(WMA_HANDLE handle)
+{
+	tp_wma_handle wma = handle;
+	struct wma_txrx_node *iface;
+	int8_t vdev_id;
+	VOS_STATUS ret;
+
+	if(!wma->wow.wow_enable || !wma->wow.wow_enable_cmd_sent) {
+		return VOS_STATUS_SUCCESS;
+	}
+
+	WMA_LOGD("WoW Resume in PCIe Context\n");
+	wma->wow.wow_enable = FALSE;
+	wma->wow.wow_enable_cmd_sent = FALSE;
+
+	for (vdev_id = 0; vdev_id < wma->max_bssid; vdev_id++) {
+		if (!wma->interfaces[vdev_id].handle)
+			continue;
+
+	#ifdef QCA_SUPPORT_TXRX_VDEV_PAUSE_LL
+	/* When host resume, by default, unpause all active vdev */
+		if (wma->interfaces[vdev_id].pause_bitmap) {
+			wdi_in_vdev_unpause(wma->interfaces[vdev_id].handle);
+			wma->interfaces[vdev_id].pause_bitmap = 0;
+		}
+	#endif /* QCA_SUPPORT_TXRX_VDEV_PAUSE_LL */
+
+		iface = &wma->interfaces[vdev_id];
+		iface->conn_state = FALSE;
+	}
+
+	ret = wma_send_host_wakeup_ind_to_fw(wma);
+	vos_wake_lock_timeout_acquire(&wma->wow_wake_lock, 2000);
+
+	return ret;
+}
+
+/*
  * Returns true if wow parameters (patterns, wakeup events, etc)
  * are configured in fw and waiting for wow to be enabled in fw.
  * Other cases, returns false.