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Date: Tue, 8 May 2018 15:45:29 +0100
From: Jose Abreu <Jose.Abreu@...opsys.com>
To: netdev@...r.kernel.org
Cc: Jose Abreu <Jose.Abreu@...opsys.com>,
"David S. Miller" <davem@...emloft.net>,
Joao Pinto <Joao.Pinto@...opsys.com>,
Vitor Soares <Vitor.Soares@...opsys.com>,
Giuseppe Cavallaro <peppe.cavallaro@...com>,
Alexandre Torgue <alexandre.torgue@...com>
Subject: [PATCH net-next 06/10] 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@...opsys.com>
Cc: David S. Miller <davem@...emloft.net>
Cc: Joao Pinto <jpinto@...opsys.com>
Cc: Vitor Soares <soares@...opsys.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>
Cc: Alexandre Torgue <alexandre.torgue@...com>
---
.../net/ethernet/stmicro/stmmac/dwmac1000_dma.c | 25 ++++++--
drivers/net/ethernet/stmicro/stmmac/dwmac100_dma.c | 25 ++++++--
drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c | 3 +-
drivers/net/ethernet/stmicro/stmmac/hwif.h | 2 +-
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 62 ++++++++-----------
5 files changed, 64 insertions(+), 53 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
index d7447b0..aacc4aa 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_dma.c
@@ -81,8 +81,7 @@ static void dwmac1000_dma_axi(void __iomem *ioaddr, struct stmmac_axi *axi)
}
static void dwmac1000_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)
{
u32 value = readl(ioaddr + DMA_BUS_MODE);
int txpbl = dma_cfg->txpbl ?: dma_cfg->pbl;
@@ -119,12 +118,22 @@ static void dwmac1000_dma_init(void __iomem *ioaddr,
/* Mask interrupts by writing to CSR7 */
writel(DMA_INTR_DEFAULT_MASK, ioaddr + DMA_INTR_ENA);
+}
- /* RX/TX descriptor base address 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 dwmac1000_dma_init_rx(void __iomem *ioaddr,
+ struct stmmac_dma_cfg *dma_cfg,
+ u32 dma_rx_phy, u32 chan)
+{
+ /* RX descriptor base address list must be written into DMA CSR3 */
+ writel(dma_rx_phy, ioaddr + DMA_RCV_BASE_ADDR);
+}
+
+static void dwmac1000_dma_init_tx(void __iomem *ioaddr,
+ struct stmmac_dma_cfg *dma_cfg,
+ u32 dma_tx_phy, u32 chan)
+{
+ /* TX descriptor base address list must be written into DMA CSR4 */
+ writel(dma_tx_phy, ioaddr + DMA_TX_BASE_ADDR);
}
static u32 dwmac1000_configure_fc(u32 csr6, int rxfifosz)
@@ -264,6 +273,8 @@ 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,
.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 80339d3..21dee25 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,
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
index 117c3a5..f0024ff 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
@@ -116,8 +116,7 @@ static void dwmac4_dma_init_channel(void __iomem *ioaddr,
}
static void dwmac4_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)
{
u32 value = readl(ioaddr + DMA_SYS_BUS_MODE);
diff --git a/drivers/net/ethernet/stmicro/stmmac/hwif.h b/drivers/net/ethernet/stmicro/stmmac/hwif.h
index 06fb20b..1c674d6 100644
--- a/drivers/net/ethernet/stmicro/stmmac/hwif.h
+++ b/drivers/net/ethernet/stmicro/stmmac/hwif.h
@@ -140,7 +140,7 @@ struct stmmac_dma_ops {
/* DMA core initialization */
int (*reset)(void __iomem *ioaddr);
void (*init)(void __iomem *ioaddr, struct stmmac_dma_cfg *dma_cfg,
- u32 dma_tx, u32 dma_rx, int atds);
+ int atds);
void (*init_chan)(void __iomem *ioaddr,
struct stmmac_dma_cfg *dma_cfg, u32 chan);
void (*init_rx_chan)(void __iomem *ioaddr,
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index e433157..afb2739 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -2134,10 +2134,9 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
{
u32 rx_channels_count = priv->plat->rx_queues_to_use;
u32 tx_channels_count = priv->plat->tx_queues_to_use;
+ u32 dma_csr_ch = max(rx_channels_count, tx_channels_count);
struct stmmac_rx_queue *rx_q;
struct stmmac_tx_queue *tx_q;
- u32 dummy_dma_rx_phy = 0;
- u32 dummy_dma_tx_phy = 0;
u32 chan = 0;
int atds = 0;
int ret = 0;
@@ -2156,48 +2155,39 @@ static int stmmac_init_dma_engine(struct stmmac_priv *priv)
return ret;
}
- if (priv->synopsys_id >= DWMAC_CORE_4_00) {
- /* DMA Configuration */
- stmmac_dma_init(priv, priv->ioaddr, priv->plat->dma_cfg,
- dummy_dma_tx_phy, dummy_dma_rx_phy, atds);
-
- /* DMA RX Channel Configuration */
- for (chan = 0; chan < rx_channels_count; chan++) {
- rx_q = &priv->rx_queue[chan];
-
- stmmac_init_rx_chan(priv, priv->ioaddr,
- priv->plat->dma_cfg, rx_q->dma_rx_phy,
- chan);
-
- rx_q->rx_tail_addr = rx_q->dma_rx_phy +
- (DMA_RX_SIZE * sizeof(struct dma_desc));
- stmmac_set_rx_tail_ptr(priv, priv->ioaddr,
- rx_q->rx_tail_addr, chan);
- }
+ /* DMA Configuration */
+ stmmac_dma_init(priv, priv->ioaddr, priv->plat->dma_cfg, atds);
- /* DMA TX Channel Configuration */
- for (chan = 0; chan < tx_channels_count; chan++) {
- tx_q = &priv->tx_queue[chan];
+ /* DMA RX Channel Configuration */
+ for (chan = 0; chan < rx_channels_count; chan++) {
+ rx_q = &priv->rx_queue[chan];
- stmmac_init_chan(priv, priv->ioaddr,
- priv->plat->dma_cfg, chan);
+ stmmac_init_rx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ rx_q->dma_rx_phy, chan);
- stmmac_init_tx_chan(priv, priv->ioaddr,
- priv->plat->dma_cfg, tx_q->dma_tx_phy,
- chan);
+ rx_q->rx_tail_addr = rx_q->dma_rx_phy +
+ (DMA_RX_SIZE * sizeof(struct dma_desc));
+ stmmac_set_rx_tail_ptr(priv, priv->ioaddr,
+ rx_q->rx_tail_addr, chan);
+ }
- tx_q->tx_tail_addr = tx_q->dma_tx_phy +
- (DMA_TX_SIZE * sizeof(struct dma_desc));
- stmmac_set_tx_tail_ptr(priv, priv->ioaddr,
- tx_q->tx_tail_addr, chan);
- }
- } else {
- rx_q = &priv->rx_queue[chan];
+ /* DMA TX Channel Configuration */
+ for (chan = 0; chan < tx_channels_count; chan++) {
tx_q = &priv->tx_queue[chan];
- stmmac_dma_init(priv, priv->ioaddr, priv->plat->dma_cfg,
- tx_q->dma_tx_phy, rx_q->dma_rx_phy, atds);
+
+ stmmac_init_tx_chan(priv, priv->ioaddr, priv->plat->dma_cfg,
+ tx_q->dma_tx_phy, chan);
+
+ tx_q->tx_tail_addr = tx_q->dma_tx_phy +
+ (DMA_TX_SIZE * sizeof(struct dma_desc));
+ stmmac_set_tx_tail_ptr(priv, priv->ioaddr,
+ tx_q->tx_tail_addr, chan);
}
+ /* DMA CSR Channel configuration */
+ for (chan = 0; chan < dma_csr_ch; chan++)
+ stmmac_init_chan(priv, priv->ioaddr, priv->plat->dma_cfg, chan);
+
if (priv->plat->axi)
stmmac_axi(priv, priv->ioaddr, priv->plat->axi);
--
1.7.1
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