net: stmmac: Uniformize the use of dma_init_* callbacks

Instead of relying on the GMAC version for choosing if we need to use
dma_init or dma_init_{rx/tx}_chan callback, lets uniformize this and
always use the dma_init_{rx/tx}_chan callbacks.

While at it, fix the use of dma_init_chan callback, which shall be
called for as many channels as the max of rx/tx channels.

Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Joao Pinto <jpinto@synopsys.com>
Cc: Vitor Soares <soares@synopsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Cc: Alexandre Torgue <alexandre.torgue@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 18 insertions, 7 deletions

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
index 80339d3d71c7..21dee25ee570 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c
@@ -29,8 +29,7 @@
 #include "dwmac_dma.h"
 
 static void dwmac100_dma_init(void __iomem *ioaddr,
-			      struct stmmac_dma_cfg *dma_cfg,
-			      u32 dma_tx, u32 dma_rx, int atds)
+			      struct stmmac_dma_cfg *dma_cfg, int atds)
 {
 	/* Enable Application Access by writing to DMA CSR0 */
 	writel(DMA_BUS_MODE_DEFAULT | (dma_cfg->pbl << DMA_BUS_MODE_PBL_SHIFT),
@@ -38,12 +37,22 @@ static void dwmac100_dma_init(void __iomem *ioaddr,
 
 	/* Mask interrupts by writing to CSR7 */
 	writel(DMA_INTR_DEFAULT_MASK, ioaddr + DMA_INTR_ENA);
+}
 
-	/* RX/TX descriptor base addr lists must be written into
-	 * DMA CSR3 and CSR4, respectively
-	 */
-	writel(dma_tx, ioaddr + DMA_TX_BASE_ADDR);
-	writel(dma_rx, ioaddr + DMA_RCV_BASE_ADDR);
+static void dwmac100_dma_init_rx(void __iomem *ioaddr,
+				 struct stmmac_dma_cfg *dma_cfg,
+				 u32 dma_rx_phy, u32 chan)
+{
+	/* RX descriptor base addr lists must be written into DMA CSR3 */
+	writel(dma_rx_phy, ioaddr + DMA_RCV_BASE_ADDR);
+}
+
+static void dwmac100_dma_init_tx(void __iomem *ioaddr,
+				 struct stmmac_dma_cfg *dma_cfg,
+				 u32 dma_tx_phy, u32 chan)
+{
+	/* TX descriptor base addr lists must be written into DMA CSR4 */
+	writel(dma_tx_phy, ioaddr + DMA_TX_BASE_ADDR);
 }
 
 /* Store and Forward capability is not used at all.
@@ -112,6 +121,8 @@ 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,
 	.dump_regs = dwmac100_dump_dma_regs,
 	.dma_tx_mode = dwmac100_dma_operation_mode_tx,
 	.dma_diagnostic_fr = dwmac100_dma_diagnostic_fr,