From: Jose Abreu <Jose.Abreu@synopsys.com>
To: netdev@vger.kernel.org
Cc: Joao Pinto <Joao.Pinto@synopsys.com>,
Jakub Kicinski <jakub.kicinski@netronome.com>,
Jose Abreu <Jose.Abreu@synopsys.com>,
Giuseppe Cavallaro <peppe.cavallaro@st.com>,
Alexandre Torgue <alexandre.torgue@st.com>,
Jose Abreu <Jose.Abreu@synopsys.com>,
"David S. Miller" <davem@davemloft.net>,
Maxime Coquelin <mcoquelin.stm32@gmail.com>,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH net v2 5/8] net: stmmac: xgmac: Clear previous RX buffer size
Date: Tue, 17 Dec 2019 12:42:35 +0100 [thread overview]
Message-ID: <bd962deb502987964ee33d5281fa66afd6316d95.1576581853.git.Jose.Abreu@synopsys.com> (raw)
In-Reply-To: <cover.1576581853.git.Jose.Abreu@synopsys.com>
In-Reply-To: <cover.1576581853.git.Jose.Abreu@synopsys.com>
When switching between buffer sizes we need to clear the previous value.
Fixes: d6ddfacd95c7 ("net: stmmac: Add DMA related callbacks for XGMAC2")
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 | 2 ++
drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c | 3 ++-
2 files changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
index 3b6e559aa0b9..ef8a07c68ca7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2.h
@@ -343,6 +343,8 @@
#define XGMAC_DMA_CH_RX_CONTROL(x) (0x00003108 + (0x80 * (x)))
#define XGMAC_RxPBL GENMASK(21, 16)
#define XGMAC_RxPBL_SHIFT 16
+#define XGMAC_RBSZ GENMASK(14, 1)
+#define XGMAC_RBSZ_SHIFT 1
#define XGMAC_RXST BIT(0)
#define XGMAC_DMA_CH_TxDESC_HADDR(x) (0x00003110 + (0x80 * (x)))
#define XGMAC_DMA_CH_TxDESC_LADDR(x) (0x00003114 + (0x80 * (x)))
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
index 22a7f0cc1b90..f3f08ccc379b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c
@@ -482,7 +482,8 @@ static void dwxgmac2_set_bfsize(void __iomem *ioaddr, int bfsize, u32 chan)
u32 value;
value = readl(ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
- value |= bfsize << 1;
+ value &= ~XGMAC_RBSZ;
+ value |= bfsize << XGMAC_RBSZ_SHIFT;
writel(value, ioaddr + XGMAC_DMA_CH_RX_CONTROL(chan));
}
--
2.7.4
next prev parent reply other threads:[~2019-12-17 11:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-17 11:42 [PATCH net v2 0/8] net: stmmac: Fixes for -net Jose Abreu
2019-12-17 11:42 ` [PATCH net v2 1/8] net: stmmac: selftests: Needs to check the number of Multicast regs Jose Abreu
2019-12-17 11:42 ` [PATCH net v2 2/8] net: stmmac: Determine earlier the size of RX buffer Jose Abreu
2019-12-17 11:42 ` [PATCH net v2 3/8] net: stmmac: Do not accept invalid MTU values Jose Abreu
2019-12-17 11:42 ` [PATCH net v2 4/8] net: stmmac: Only the last buffer has the FCS field Jose Abreu
2019-12-17 11:42 ` Jose Abreu [this message]
2019-12-17 11:42 ` [PATCH net v2 6/8] net: stmmac: RX buffer size must be 16 byte aligned Jose Abreu
2019-12-18 6:56 ` David Miller
2019-12-17 11:42 ` [PATCH net v2 7/8] net: stmmac: 16KB buffer " Jose Abreu
2019-12-17 11:42 ` [PATCH net v2 8/8] net: stmmac: Enable 16KB buffer size Jose Abreu
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