From 59cbbf640b1a26fdf19362cc72591132b3614db9 Mon Sep 17 00:00:00 2001
From: Jinwei Chen <jinweic@codeaurora.org>
Date: Mon, 21 Dec 2020 05:18:55 -0800
Subject: [PATCH] qcacld-3.0: support fisa fse cache flushing disable/enable

FISA FSE cache flushing is not allowed after PCIe bus suspended,
add function to support FISA FSE cache flushing disable/enable.

Change-Id: I4371e2941a4d2b590fa66db8390135f2620b54a3
CRs-Fixed: 2841740
---
 core/dp/txrx3.0/dp_fisa_rx.c | 28 ++++++++++++++++++++++++++++
 core/dp/txrx3.0/dp_fisa_rx.h | 16 ++++++++++++++++
 core/dp/txrx3.0/dp_rx_fst.c  |  4 +++-
 3 files changed, 47 insertions(+), 1 deletion(-)

diff --git a/core/dp/txrx3.0/dp_fisa_rx.c b/core/dp/txrx3.0/dp_fisa_rx.c
index 388426826b99..7212f08789da 100644
--- a/core/dp/txrx3.0/dp_fisa_rx.c
+++ b/core/dp/txrx3.0/dp_fisa_rx.c
@@ -510,6 +510,7 @@ dp_rx_fisa_add_ft_entry(struct dp_rx_fst *fisa_hdl,
 	 * reflect the flow update
 	 */
 	if (is_fst_updated &&
+	    fisa_hdl->fse_cache_flush_allow &&
 	    (qdf_atomic_inc_return(&fisa_hdl->fse_cache_flush_posted) == 1)) {
 		/* return 1 after increment implies FSE cache flush message
 		 * already posted. so start restart the timer
@@ -1913,3 +1914,30 @@ void dp_set_fisa_disallowed_for_vdev(struct cdp_soc_t *cdp_soc, uint8_t vdev_id,
 	vdev->fisa_disallowed[rx_ctx_id] = val;
 	dp_vdev_unref_delete(soc, vdev, DP_MOD_ID_RX);
 }
+
+void dp_suspend_fse_cache_flush(struct dp_soc *soc)
+{
+	struct dp_rx_fst *dp_fst;
+
+	dp_fst = soc->rx_fst;
+	if (dp_fst) {
+		if (qdf_atomic_read(&dp_fst->fse_cache_flush_posted))
+			qdf_timer_sync_cancel(&dp_fst->fse_cache_flush_timer);
+		dp_fst->fse_cache_flush_allow = false;
+	}
+
+	dp_info("fse cache flush suspended");
+}
+
+void dp_resume_fse_cache_flush(struct dp_soc *soc)
+{
+	struct dp_rx_fst *dp_fst;
+
+	dp_fst = soc->rx_fst;
+	if (dp_fst) {
+		qdf_atomic_set(&dp_fst->fse_cache_flush_posted, 0);
+		dp_fst->fse_cache_flush_allow = true;
+	}
+
+	dp_info("fse cache flush resumed");
+}
diff --git a/core/dp/txrx3.0/dp_fisa_rx.h b/core/dp/txrx3.0/dp_fisa_rx.h
index cda4471a5b7c..f3b7cb860b1d 100644
--- a/core/dp/txrx3.0/dp_fisa_rx.h
+++ b/core/dp/txrx3.0/dp_fisa_rx.h
@@ -125,6 +125,22 @@ void dp_set_fisa_disallowed_for_vdev(struct cdp_soc_t *cdp_soc, uint8_t vdev_id,
  * Return: None
  */
 void dp_fisa_rx_fst_update_work(void *arg);
+
+/**
+ * dp_suspend_fse_cache_flush() - Suspend FSE cache flush
+ * @soc: core txrx main context
+ *
+ * Return: None
+ */
+void dp_suspend_fse_cache_flush(struct dp_soc *soc);
+
+/**
+ * dp_resume_fse_cache_flush() - Resume FSE cache flush
+ * @soc: core txrx main context
+ *
+ * Return: None
+ */
+void dp_resume_fse_cache_flush(struct dp_soc *soc);
 #else
 static QDF_STATUS dp_rx_dump_fisa_stats(struct dp_soc *soc)
 {
diff --git a/core/dp/txrx3.0/dp_rx_fst.c b/core/dp/txrx3.0/dp_rx_fst.c
index 6e5a0af6df2c..252340f46ca9 100644
--- a/core/dp/txrx3.0/dp_rx_fst.c
+++ b/core/dp/txrx3.0/dp_rx_fst.c
@@ -112,7 +112,6 @@ static void dp_fisa_fse_cache_flush_timer(void *arg)
 	dp_info("FSE cache flush for %d flows",
 		fse_cache_flush_rec->flows_added);
 
-	qdf_atomic_set(&fisa_hdl->fse_cache_flush_posted, 0);
 	status =
 	 dp_rx_flow_send_htt_operation_cmd(soc->pdev_list[0],
 					   DP_HTT_FST_CACHE_INVALIDATE_FULL,
@@ -123,6 +122,8 @@ static void dp_fisa_fse_cache_flush_timer(void *arg)
 		 * Not big impact cache entry gets updated later
 		 */
 	}
+
+	qdf_atomic_set(&fisa_hdl->fse_cache_flush_posted, 0);
 }
 
 /**
@@ -266,6 +267,7 @@ QDF_STATUS dp_rx_fst_attach(struct dp_soc *soc, struct dp_pdev *pdev)
 
 	qdf_atomic_init(&fst->fse_cache_flush_posted);
 
+	fst->fse_cache_flush_allow = true;
 	fst->soc_hdl = soc;
 	soc->rx_fst = fst;
 	soc->fisa_enable = true;