From: Satha Koteswara Rao <satha.rao@caviumnetworks.com>
To: <linux-kernel@vger.kernel.org>
Cc: <sgoutham@cavium.com>, <rric@kernel.org>, <davem@davemloft.net>,
<david.daney@cavium.com>, <rvatsavayi@caviumnetworks.com>,
<derek.chickles@caviumnetworks.com>,
<satha.rao@caviumnetworks.com>, <philip.romanov@cavium.com>,
<netdev@vger.kernel.org>, <linux-arm-kernel@lists.infradead.org>
Subject: [RFC PATCH 3/7] Enable pause frame support
Date: Wed, 21 Dec 2016 14:16:47 +0530 [thread overview]
Message-ID: <1482310011-1862-4-git-send-email-satha.rao@caviumnetworks.com> (raw)
In-Reply-To: <1482310011-1862-1-git-send-email-satha.rao@caviumnetworks.com>
---
drivers/net/ethernet/cavium/thunder/thunder_bgx.c | 25 +++++++++++++++++++++++
drivers/net/ethernet/cavium/thunder/thunder_bgx.h | 7 +++++++
2 files changed, 32 insertions(+)
diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
index 050e21f..92d7e04 100644
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.c
@@ -121,6 +121,31 @@ static int bgx_poll_reg(struct bgx *bgx, u8 lmac, u64 reg, u64 mask, bool zero)
return 1;
}
+void enable_pause_frames(int node, int bgx_idx, int lmac)
+{
+ u64 reg_value = 0;
+ struct bgx *bgx = bgx_vnic[(node * MAX_BGX_PER_NODE) + bgx_idx];
+
+ reg_value = bgx_reg_read(bgx, lmac, BGX_SMUX_TX_CTL);
+ /* Enable BGX()_SMU()_TX_CTL */
+ if (!(reg_value & L2P_BP_CONV))
+ bgx_reg_write(bgx, lmac, BGX_SMUX_TX_CTL,
+ (reg_value | (L2P_BP_CONV)));
+
+ reg_value = bgx_reg_read(bgx, lmac, BGX_SMUX_HG2_CTL);
+ /* Clear if BGX()_SMU()_HG2_CONTROL[HG2TX_EN] is set */
+ if (reg_value & SMUX_HG2_CTL_HG2TX_EN)
+ bgx_reg_write(bgx, lmac, BGX_SMUX_HG2_CTL,
+ (reg_value & (~SMUX_HG2_CTL_HG2TX_EN)));
+
+ reg_value = bgx_reg_read(bgx, lmac, BGX_SMUX_CBFC_CTL);
+ /* Clear if BGX()_SMU()_CBFC_CTL[TX_EN] is set */
+ if (reg_value & CBFC_CTL_TX_EN)
+ bgx_reg_write(bgx, lmac, BGX_SMUX_CBFC_CTL,
+ (reg_value & (~CBFC_CTL_TX_EN)));
+}
+EXPORT_SYMBOL(enable_pause_frames);
+
/* Return number of BGX present in HW */
unsigned bgx_get_map(int node)
{
diff --git a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
index 01cc7c8..5b57bd1 100644
--- a/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
+++ b/drivers/net/ethernet/cavium/thunder/thunder_bgx.h
@@ -131,6 +131,11 @@
#define BGX_SMUX_TX_CTL 0x20178
#define SMU_TX_CTL_DIC_EN BIT_ULL(0)
#define SMU_TX_CTL_UNI_EN BIT_ULL(1)
+#define L2P_BP_CONV BIT_ULL(7)
+#define BGX_SMUX_CBFC_CTL 0x20218
+#define CBFC_CTL_TX_EN BIT_ULL(1)
+#define BGX_SMUX_HG2_CTL 0x20210
+#define SMUX_HG2_CTL_HG2TX_EN BIT_ULL(18)
#define SMU_TX_CTL_LNK_STATUS (3ull << 4)
#define BGX_SMUX_TX_THRESH 0x20180
#define BGX_SMUX_CTL 0x20200
@@ -212,6 +217,8 @@ void bgx_lmac_internal_loopback(int node, int bgx_idx,
u64 bgx_get_rx_stats(int node, int bgx_idx, int lmac, int idx);
u64 bgx_get_tx_stats(int node, int bgx_idx, int lmac, int idx);
+void enable_pause_frames(int node, int bgx_idx, int lmac);
+
#define BGX_RX_STATS_COUNT 11
#define BGX_TX_STATS_COUNT 18
--
1.8.3.1
next prev parent reply other threads:[~2016-12-21 9:21 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-21 8:46 [RFC PATCH 0/7] ThunderX Embedded switch support Satha Koteswara Rao
2016-12-21 8:46 ` [RFC PATCH 1/7] PF driver modified to enable HW filter support, changes works in backward compatibility mode Enable required things in Makefile Enable LZ4 dependecy inside config file Satha Koteswara Rao
2016-12-21 13:05 ` Sunil Kovvuri
2016-12-26 14:20 ` Koteshwar Rao, Satha
2016-12-27 4:19 ` Sunil Kovvuri
2016-12-21 8:46 ` [RFC PATCH 2/7] VF driver changes to enable hooks to get kernel notifications Satha Koteswara Rao
2016-12-21 8:46 ` Satha Koteswara Rao [this message]
[not found] ` <DM5PR07MB2889471E0668C95BD2A266709E930@DM5PR07MB2889.namprd07.prod.outlook.com>
2016-12-26 14:21 ` [RFC PATCH 3/7] Enable pause frame support Koteshwar Rao, Satha
2016-12-21 8:46 ` [RFC PATCH 4/7] HW Filter Initialization code and register access APIs Satha Koteswara Rao
2016-12-21 12:36 ` Sunil Kovvuri
2016-12-26 14:13 ` Koteshwar Rao, Satha
2016-12-21 8:46 ` [RFC PATCH 5/7] Multiple VF's grouped together under single physical port called PF group PF Group maintainance API's Satha Koteswara Rao
2016-12-21 12:43 ` Sunil Kovvuri
2016-12-26 14:16 ` Koteshwar Rao, Satha
2016-12-21 8:46 ` [RFC PATCH 6/7] HW Filter Table access API's Satha Koteswara Rao
2016-12-21 8:46 ` [RFC PATCH 7/7] Get notifications from PF driver and configure filter block based on request data Satha Koteswara Rao
2016-12-21 12:03 ` [RFC PATCH 0/7] ThunderX Embedded switch support Sunil Kovvuri
2016-12-26 14:04 ` Koteshwar Rao, Satha
2016-12-26 14:55 ` Andrew Lunn
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