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Message-Id: <09aae9af3afa2685c282bae60b7172d4dff45a0c.1489146580.git.jpinto@synopsys.com>
Date: Fri, 10 Mar 2017 12:18:27 +0000
From: Joao Pinto <Joao.Pinto@...opsys.com>
To: davem@...emloft.net
Cc: peppe.cavallaro@...com, alexandre.torgue@...com,
niklas.cassel@...s.com, netdev@...r.kernel.org,
Joao Pinto <Joao.Pinto@...opsys.com>
Subject: [PATCH v4 net-next 2/9] net: stmicro: configure mtl rx and tx algorithms
This patch adds the RX and TX scheduling algorithms programming.
It introduces the multiple queues configuration function
(stmmac_mtl_configuration) in stmmac_main.
Signed-off-by: Joao Pinto <jpinto@...opsys.com>
---
Changes v3->v4:
- Just to keep up with patch-set version
Changes v2->v3:
- Switch statements with a tab
Changes v1->v2:
- Just to keep up with patch-set version
drivers/net/ethernet/stmicro/stmmac/common.h | 4 ++
drivers/net/ethernet/stmicro/stmmac/dwmac4.h | 10 +++++
drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 48 +++++++++++++++++++++++
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 31 +++++++++++++--
4 files changed, 90 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index 04d9245..5a0a781 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -455,6 +455,10 @@ struct stmmac_ops {
int (*rx_ipc)(struct mac_device_info *hw);
/* Enable RX Queues */
void (*rx_queue_enable)(struct mac_device_info *hw, u32 queue);
+ /* Program RX Algorithms */
+ void (*prog_mtl_rx_algorithms)(struct mac_device_info *hw, u32 rx_alg);
+ /* Program TX Algorithms */
+ void (*prog_mtl_tx_algorithms)(struct mac_device_info *hw, u32 tx_alg);
/* Dump MAC registers */
void (*dump_regs)(struct mac_device_info *hw, u32 *reg_space);
/* Handle extra events on specific interrupts hw dependent */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
index db45134..748ab6f 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4.h
@@ -161,6 +161,16 @@ enum power_event {
#define GMAC_HI_REG_AE BIT(31)
/* MTL registers */
+#define MTL_OPERATION_MODE 0x00000c00
+#define MTL_OPERATION_SCHALG_MASK GENMASK(6, 5)
+#define MTL_OPERATION_SCHALG_WRR (0x0 << 5)
+#define MTL_OPERATION_SCHALG_WFQ (0x1 << 5)
+#define MTL_OPERATION_SCHALG_DWRR (0x2 << 5)
+#define MTL_OPERATION_SCHALG_SP (0x3 << 5)
+#define MTL_OPERATION_RAA BIT(2)
+#define MTL_OPERATION_RAA_SP (0x0 << 2)
+#define MTL_OPERATION_RAA_WSP (0x1 << 2)
+
#define MTL_INT_STATUS 0x00000c20
#define MTL_INT_Q0 BIT(0)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 1e79e65..f966755 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
@@ -70,6 +70,52 @@ static void dwmac4_rx_queue_enable(struct mac_device_info *hw, u32 queue)
writel(value, ioaddr + GMAC_RXQ_CTRL0);
}
+static void dwmac4_prog_mtl_rx_algorithms(struct mac_device_info *hw,
+ u32 rx_alg)
+{
+ void __iomem *ioaddr = hw->pcsr;
+ u32 value = readl(ioaddr + MTL_OPERATION_MODE);
+
+ value &= ~MTL_OPERATION_RAA;
+ switch (rx_alg) {
+ case MTL_RX_ALGORITHM_SP:
+ value |= MTL_OPERATION_RAA_SP;
+ break;
+ case MTL_RX_ALGORITHM_WSP:
+ value |= MTL_OPERATION_RAA_WSP;
+ break;
+ default:
+ break;
+ }
+
+ writel(value, ioaddr + MTL_OPERATION_MODE);
+}
+
+static void dwmac4_prog_mtl_tx_algorithms(struct mac_device_info *hw,
+ u32 tx_alg)
+{
+ void __iomem *ioaddr = hw->pcsr;
+ u32 value = readl(ioaddr + MTL_OPERATION_MODE);
+
+ value &= ~MTL_OPERATION_SCHALG_MASK;
+ switch (tx_alg) {
+ case MTL_TX_ALGORITHM_WRR:
+ value |= MTL_OPERATION_SCHALG_WRR;
+ break;
+ case MTL_TX_ALGORITHM_WFQ:
+ value |= MTL_OPERATION_SCHALG_WFQ;
+ break;
+ case MTL_TX_ALGORITHM_DWRR:
+ value |= MTL_OPERATION_SCHALG_DWRR;
+ break;
+ case MTL_TX_ALGORITHM_SP:
+ value |= MTL_OPERATION_SCHALG_SP;
+ break;
+ default:
+ break;
+ }
+}
+
static void dwmac4_dump_regs(struct mac_device_info *hw, u32 *reg_space)
{
void __iomem *ioaddr = hw->pcsr;
@@ -457,6 +503,8 @@ static const struct stmmac_ops dwmac4_ops = {
.core_init = dwmac4_core_init,
.rx_ipc = dwmac4_rx_ipc_enable,
.rx_queue_enable = dwmac4_rx_queue_enable,
+ .prog_mtl_rx_algorithms = dwmac4_prog_mtl_rx_algorithms,
+ .prog_mtl_tx_algorithms = dwmac4_prog_mtl_tx_algorithms,
.dump_regs = dwmac4_dump_regs,
.host_irq_status = dwmac4_irq_status,
.flow_ctrl = dwmac4_flow_ctrl,
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 4498a38..af57f8d 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1645,6 +1645,31 @@ static void stmmac_init_tx_coalesce(struct stmmac_priv *priv)
}
/**
+ * stmmac_mtl_configuration - Configure MTL
+ * @priv: driver private structure
+ * Description: It is used for configurring MTL
+ */
+static void stmmac_mtl_configuration(struct stmmac_priv *priv)
+{
+ u32 rx_queues_count = priv->plat->rx_queues_to_use;
+ u32 tx_queues_count = priv->plat->tx_queues_to_use;
+
+ /* Configure MTL RX algorithms */
+ if (rx_queues_count > 1 && priv->hw->mac->prog_mtl_rx_algorithms)
+ priv->hw->mac->prog_mtl_rx_algorithms(priv->hw,
+ priv->plat->rx_sched_algorithm);
+
+ /* Configure MTL TX algorithms */
+ if (tx_queues_count > 1 && priv->hw->mac->prog_mtl_tx_algorithms)
+ priv->hw->mac->prog_mtl_tx_algorithms(priv->hw,
+ priv->plat->tx_sched_algorithm);
+
+ /* Enable MAC RX Queues */
+ if (rx_queues_count > 1 && priv->hw->mac->rx_queue_enable)
+ stmmac_mac_enable_rx_queues(priv);
+}
+
+/**
* stmmac_hw_setup - setup mac in a usable state.
* @dev : pointer to the device structure.
* Description:
@@ -1688,9 +1713,9 @@ static int stmmac_hw_setup(struct net_device *dev, bool init_ptp)
/* Initialize the MAC Core */
priv->hw->mac->core_init(priv->hw, dev->mtu);
- /* Initialize MAC RX Queues */
- if (priv->hw->mac->rx_queue_enable)
- stmmac_mac_enable_rx_queues(priv);
+ /* Initialize MTL*/
+ if (priv->synopsys_id >= DWMAC_CORE_4_00)
+ stmmac_mtl_configuration(priv);
ret = priv->hw->mac->rx_ipc(priv->hw);
if (!ret) {
--
2.9.3
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