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From: Jose Abreu <Jose.Abreu@synopsys.com>
To: netdev@vger.kernel.org
Cc: Jose Abreu <Jose.Abreu@synopsys.com>,
	Joao Pinto <Joao.Pinto@synopsys.com>,
	Alexandre Torgue <alexandre.torgue@st.com>,
	linux-kernel@vger.kernel.org,
	linux-stm32@st-md-mailman.stormreply.com,
	Maxime Coquelin <mcoquelin.stm32@gmail.com>,
	Giuseppe Cavallaro <peppe.cavallaro@st.com>,
	"David S. Miller" <davem@davemloft.net>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 net 2/9] net: stmmac: xgmac: Detect Hash Table size dinamically
Date: Mon, 30 Sep 2019 10:19:06 +0200	[thread overview]
Message-ID: <765ffe12f3972556fc627526627e4fbb30ee9191.1569831229.git.Jose.Abreu@synopsys.com> (raw)
In-Reply-To: <cover.1569831228.git.Jose.Abreu@synopsys.com>
In-Reply-To: <cover.1569831228.git.Jose.Abreu@synopsys.com>

Since commit b8ef7020d6e5 ("net: stmmac: add support for hash table size
128/256 in dwmac4"), we can detect the Hash Table dinamically.

Let's implement this feature in XGMAC cores and fix possible setups that
don't support the maximum size for Hash Table.

Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>

---
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Cc: Jose Abreu <joabreu@synopsys.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: netdev@vger.kernel.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
---
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h     | 1 +
 drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 1 +
 2 files changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 5923ca62d793..f7eb06f8fb37 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -122,6 +122,7 @@
 #define XGMAC_HWFEAT_GMIISEL		BIT(1)
 #define XGMAC_HW_FEATURE1		0x00000120
 #define XGMAC_HWFEAT_L3L4FNUM		GENMASK(30, 27)
+#define XGMAC_HWFEAT_HASHTBLSZ		GENMASK(25, 24)
 #define XGMAC_HWFEAT_RSSEN		BIT(20)
 #define XGMAC_HWFEAT_TSOEN		BIT(18)
 #define XGMAC_HWFEAT_SPHEN		BIT(17)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 53c4a40d8386..965cbe3e6f51 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -380,6 +380,7 @@ static void dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	/* MAC HW feature 1 */
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE1);
 	dma_cap->l3l4fnum = (hw_cap & XGMAC_HWFEAT_L3L4FNUM) >> 27;
+	dma_cap->hash_tb_sz = (hw_cap & XGMAC_HWFEAT_HASHTBLSZ) >> 24;
 	dma_cap->rssen = (hw_cap & XGMAC_HWFEAT_RSSEN) >> 20;
 	dma_cap->tsoen = (hw_cap & XGMAC_HWFEAT_TSOEN) >> 18;
 	dma_cap->sphen = (hw_cap & XGMAC_HWFEAT_SPHEN) >> 17;
-- 
2.7.4


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  parent reply	other threads:[~2019-09-30  8:20 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-09-30  8:19 [PATCH v2 net 0/9] net: stmmac: Fixes for -net Jose Abreu
2019-09-30  8:19 ` [PATCH v2 net 1/9] net: stmmac: xgmac: Not all Unicast addresses may be available Jose Abreu
2019-09-30  8:19 ` Jose Abreu [this message]
2019-09-30  8:19 ` [PATCH v2 net 3/9] net: stmmac: selftests: Always use max DMA size in Jumbo Test Jose Abreu
2019-09-30  8:19 ` [PATCH v2 net 4/9] net: stmmac: dwmac4: Always update the MAC Hash Filter Jose Abreu
2019-09-30  8:19 ` [PATCH v2 net 5/9] net: stmmac: Correctly take timestamp for PTPv2 Jose Abreu
2019-09-30  8:19 ` [PATCH v2 net 6/9] net: stmmac: Do not stop PHY if WoL is enabled Jose Abreu
2019-09-30  8:19 ` [PATCH v2 net 7/9] net: stmmac: xgmac: Disable the Timestamp interrupt by default Jose Abreu
2019-09-30  8:19 ` [PATCH v2 net 8/9] net: stmmac: xgmac: Fix RSS not writing all Keys to HW Jose Abreu
2019-09-30  8:19 ` [PATCH v2 net 9/9] net: stmmac: xgmac: Fix RSS writing wrong keys Jose Abreu
2019-09-30 13:11   ` Arnd Bergmann
2019-10-01 17:13 ` [PATCH v2 net 0/9] net: stmmac: Fixes for -net David Miller

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