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Date:   Mon, 8 Feb 2021 17:03:34 +0300
From:   Serge Semin <Sergey.Semin@...kalelectronics.ru>
To:     Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>,
        Jose Abreu <joabreu@...opsys.com>,
        "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        Jose Abreu <Jose.Abreu@...opsys.com>,
        Maxime Coquelin <mcoquelin.stm32@...il.com>
CC:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Vyacheslav Mitrofanov 
        <Vyacheslav.Mitrofanov@...kalelectronics.ru>,
        Russell King <linux@...linux.org.uk>,
        Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        <netdev@...r.kernel.org>,
        <linux-stm32@...md-mailman.stormreply.com>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH 13/20] net: stmmac: Move DMA Tx/Rx init methods to DW MAC lib

These methods are identical for both DW MAC100 and DW MAC1000 cores, so
their implementation can be moved to the common for the core library.

Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
---
 .../ethernet/stmicro/stmmac/dwmac1000_dma.c   | 20 ++-----------------
 .../ethernet/stmicro/stmmac/dwmac100_dma.c    | 20 ++-----------------
 .../net/ethernet/stmicro/stmmac/dwmac_dma.h   |  4 ++++
 .../net/ethernet/stmicro/stmmac/dwmac_lib.c   | 14 +++++++++++++
 4 files changed, 22 insertions(+), 36 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
index 2bac49b49f73..2a04d9d45160 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
@@ -110,22 +110,6 @@ static void dwmac1000_dma_init(void __iomem *ioaddr,
 	writel(DMA_INTR_DEFAULT_MASK, ioaddr + DMA_INTR_ENA);
 }
 
-static void dwmac1000_dma_init_rx(void __iomem *ioaddr,
-				  struct stmmac_dma_cfg *dma_cfg,
-				  dma_addr_t dma_rx_phy, u32 chan)
-{
-	/* RX descriptor base address list must be written into DMA CSR3 */
-	writel(lower_32_bits(dma_rx_phy), ioaddr + DMA_RCV_BASE_ADDR);
-}
-
-static void dwmac1000_dma_init_tx(void __iomem *ioaddr,
-				  struct stmmac_dma_cfg *dma_cfg,
-				  dma_addr_t dma_tx_phy, u32 chan)
-{
-	/* TX descriptor base address list must be written into DMA CSR4 */
-	writel(lower_32_bits(dma_tx_phy), ioaddr + DMA_TX_BASE_ADDR);
-}
-
 static u32 dwmac1000_configure_fc(u32 csr6, int rxfifosz)
 {
 	csr6 &= ~DMA_CONTROL_RFA_MASK;
@@ -263,8 +247,8 @@ static void dwmac1000_rx_watchdog(void __iomem *ioaddr, u32 riwt,
 const struct stmmac_dma_ops dwmac1000_dma_ops = {
 	.reset = dwmac_dma_reset,
 	.init = dwmac1000_dma_init,
-	.init_rx_chan = dwmac1000_dma_init_rx,
-	.init_tx_chan = dwmac1000_dma_init_tx,
+	.init_rx_chan = dwmac_dma_init_rx,
+	.init_tx_chan = dwmac_dma_init_tx,
 	.axi = dwmac1000_dma_axi,
 	.dump_regs = dwmac1000_dump_dma_regs,
 	.dma_rx_mode = dwmac1000_dma_operation_mode_rx,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
index 8f0d9bc7cab5..ad51a7949a42 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
@@ -29,22 +29,6 @@ static void dwmac100_dma_init(void __iomem *ioaddr,
 	writel(DMA_INTR_DEFAULT_MASK, ioaddr + DMA_INTR_ENA);
 }
 
-static void dwmac100_dma_init_rx(void __iomem *ioaddr,
-				 struct stmmac_dma_cfg *dma_cfg,
-				 dma_addr_t dma_rx_phy, u32 chan)
-{
-	/* RX descriptor base addr lists must be written into DMA CSR3 */
-	writel(lower_32_bits(dma_rx_phy), ioaddr + DMA_RCV_BASE_ADDR);
-}
-
-static void dwmac100_dma_init_tx(void __iomem *ioaddr,
-				 struct stmmac_dma_cfg *dma_cfg,
-				 dma_addr_t dma_tx_phy, u32 chan)
-{
-	/* TX descriptor base addr lists must be written into DMA CSR4 */
-	writel(lower_32_bits(dma_tx_phy), ioaddr + DMA_TX_BASE_ADDR);
-}
-
 /* Store and Forward capability is not used at all.
  *
  * The transmit threshold can be programmed by setting the TTC bits in the DMA
@@ -111,8 +95,8 @@ static void dwmac100_dma_diagnostic_fr(void *data, struct stmmac_extra_stats *x,
 const struct stmmac_dma_ops dwmac100_dma_ops = {
 	.reset = dwmac_dma_reset,
 	.init = dwmac100_dma_init,
-	.init_rx_chan = dwmac100_dma_init_rx,
-	.init_tx_chan = dwmac100_dma_init_tx,
+	.init_rx_chan = dwmac_dma_init_rx,
+	.init_tx_chan = dwmac_dma_init_tx,
 	.dump_regs = dwmac100_dump_dma_regs,
 	.dma_tx_mode = dwmac100_dma_operation_mode_tx,
 	.dma_diagnostic_fr = dwmac100_dma_diagnostic_fr,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
index e5dbd0bc257e..fa919bf75e19 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_dma.h
@@ -134,8 +134,12 @@
 void dwmac_enable_dma_transmission(void __iomem *ioaddr);
 void dwmac_enable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx);
 void dwmac_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx);
+void dwmac_dma_init_tx(void __iomem *ioaddr, struct stmmac_dma_cfg *dma_cfg,
+		       dma_addr_t dma_tx_phy, u32 chan);
 void dwmac_dma_start_tx(void __iomem *ioaddr, u32 chan);
 void dwmac_dma_stop_tx(void __iomem *ioaddr, u32 chan);
+void dwmac_dma_init_rx(void __iomem *ioaddr, struct stmmac_dma_cfg *dma_cfg,
+		       dma_addr_t dma_rx_phy, u32 chan);
 void dwmac_dma_start_rx(void __iomem *ioaddr, u32 chan);
 void dwmac_dma_stop_rx(void __iomem *ioaddr, u32 chan);
 int dwmac_dma_interrupt(void __iomem *ioaddr, struct stmmac_extra_stats *x,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
index 57a53a600aa5..6ddfc689e77b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
@@ -56,6 +56,13 @@ void dwmac_disable_dma_irq(void __iomem *ioaddr, u32 chan, bool rx, bool tx)
 	writel(value, ioaddr + DMA_INTR_ENA);
 }
 
+void dwmac_dma_init_tx(void __iomem *ioaddr, struct stmmac_dma_cfg *dma_cfg,
+		       dma_addr_t dma_tx_phy, u32 chan)
+{
+	/* TX descriptor base address list must be written into DMA CSR4 */
+	writel(lower_32_bits(dma_tx_phy), ioaddr + DMA_TX_BASE_ADDR);
+}
+
 void dwmac_dma_start_tx(void __iomem *ioaddr, u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CONTROL);
@@ -70,6 +77,13 @@ void dwmac_dma_stop_tx(void __iomem *ioaddr, u32 chan)
 	writel(value, ioaddr + DMA_CONTROL);
 }
 
+void dwmac_dma_init_rx(void __iomem *ioaddr, struct stmmac_dma_cfg *dma_cfg,
+		       dma_addr_t dma_rx_phy, u32 chan)
+{
+	/* RX descriptor base address list must be written into DMA CSR3 */
+	writel(lower_32_bits(dma_rx_phy), ioaddr + DMA_RCV_BASE_ADDR);
+}
+
 void dwmac_dma_start_rx(void __iomem *ioaddr, u32 chan)
 {
 	u32 value = readl(ioaddr + DMA_CONTROL);
-- 
2.29.2

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