[PATCH net-next v2 2/4] net: stmmac: Make MSI interrupt routine generic
From: Leong Ching Swee
Date: Fri Jan 05 2024 - 02:10:37 EST
From: Swee Leong Ching <leong.ching.swee@xxxxxxxxx>
There is no support for per DMA channel interrupt for non-MSI platform,
where the MAC's per channel interrupt hooks up to interrupt controller(GIC)
through shared peripheral interrupt(SPI) to handle interrupt from TX/RX
transmit channel.
This patch generalize the existing MSI ISR to also support non-MSI
platform.
Signed-off-by: Teoh Ji Sheng <ji.sheng.teoh@xxxxxxxxx>
Signed-off-by: Swee Leong Ching <leong.ching.swee@xxxxxxxxx>
---
.../net/ethernet/stmicro/stmmac/dwmac-intel.c | 4 +--
.../ethernet/stmicro/stmmac/dwmac-socfpga.c | 3 ++
.../net/ethernet/stmicro/stmmac/dwmac4_dma.c | 2 +-
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 30 +++++++++----------
include/linux/stmmac.h | 4 +--
5 files changed, 23 insertions(+), 20 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
index 60283543ffc8..f0ec69af96c9 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
@@ -952,7 +952,7 @@ static int stmmac_config_single_msi(struct pci_dev *pdev,
res->irq = pci_irq_vector(pdev, 0);
res->wol_irq = res->irq;
- plat->flags &= ~STMMAC_FLAG_MULTI_MSI_EN;
+ plat->flags &= ~STMMAC_FLAG_MULTI_IRQ_EN;
dev_info(&pdev->dev, "%s: Single IRQ enablement successful\n",
__func__);
@@ -1004,7 +1004,7 @@ static int stmmac_config_multi_msi(struct pci_dev *pdev,
if (plat->msi_sfty_ue_vec < STMMAC_MSI_VEC_MAX)
res->sfty_ue_irq = pci_irq_vector(pdev, plat->msi_sfty_ue_vec);
- plat->flags |= STMMAC_FLAG_MULTI_MSI_EN;
+ plat->flags |= STMMAC_FLAG_MULTI_IRQ_EN;
dev_info(&pdev->dev, "%s: multi MSI enablement successful\n", __func__);
return 0;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
index ba2ce776bd4d..cf43fb3c6cc5 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c
@@ -427,6 +427,9 @@ static int socfpga_dwmac_probe(struct platform_device *pdev)
plat_dat->bsp_priv = dwmac;
plat_dat->fix_mac_speed = socfpga_dwmac_fix_mac_speed;
+ if (stmmac_res.rx_irq[0] > 0 && stmmac_res.tx_irq[0] > 0)
+ plat_dat->flags |= STMMAC_FLAG_MULTI_IRQ_EN;
+
ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
if (ret)
return ret;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
index 84d3a8551b03..5f649106ffcd 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_dma.c
@@ -175,7 +175,7 @@ static void dwmac4_dma_init(void __iomem *ioaddr,
value = readl(ioaddr + DMA_BUS_MODE);
- if (dma_cfg->multi_msi_en) {
+ if (dma_cfg->multi_irq_en) {
value &= ~DMA_BUS_MODE_INTM_MASK;
value |= (DMA_BUS_MODE_INTM_MODE1 << DMA_BUS_MODE_INTM_SHIFT);
}
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 47de466e432c..57873b879b33 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -129,8 +129,8 @@ static irqreturn_t stmmac_interrupt(int irq, void *dev_id);
/* For MSI interrupts handling */
static irqreturn_t stmmac_mac_interrupt(int irq, void *dev_id);
static irqreturn_t stmmac_safety_interrupt(int irq, void *dev_id);
-static irqreturn_t stmmac_msi_intr_tx(int irq, void *data);
-static irqreturn_t stmmac_msi_intr_rx(int irq, void *data);
+static irqreturn_t stmmac_dma_tx_interrupt(int irq, void *data);
+static irqreturn_t stmmac_dma_rx_interrupt(int irq, void *data);
static void stmmac_reset_rx_queue(struct stmmac_priv *priv, u32 queue);
static void stmmac_reset_tx_queue(struct stmmac_priv *priv, u32 queue);
static void stmmac_reset_queues_param(struct stmmac_priv *priv);
@@ -3602,7 +3602,7 @@ static void stmmac_free_irq(struct net_device *dev,
}
}
-static int stmmac_request_irq_multi_msi(struct net_device *dev)
+static int stmmac_request_irq_multi(struct net_device *dev)
{
struct stmmac_priv *priv = netdev_priv(dev);
enum request_irq_err irq_err;
@@ -3697,7 +3697,7 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
}
}
- /* Request Rx MSI irq */
+ /* Request Rx irq */
for (i = 0; i < priv->plat->rx_queues_to_use; i++) {
if (i >= MTL_MAX_RX_QUEUES)
break;
@@ -3707,11 +3707,11 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
int_name = priv->int_name_rx_irq[i];
sprintf(int_name, "%s:%s-%d", dev->name, "rx", i);
ret = request_irq(priv->rx_irq[i],
- stmmac_msi_intr_rx,
+ stmmac_dma_rx_interrupt,
0, int_name, &priv->dma_conf.rx_queue[i]);
if (unlikely(ret < 0)) {
netdev_err(priv->dev,
- "%s: alloc rx-%d MSI %d (error: %d)\n",
+ "%s: alloc rx-%d dma rx_irq %d (error: %d)\n",
__func__, i, priv->rx_irq[i], ret);
irq_err = REQ_IRQ_ERR_RX;
irq_idx = i;
@@ -3722,7 +3722,7 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
irq_set_affinity_hint(priv->rx_irq[i], &cpu_mask);
}
- /* Request Tx MSI irq */
+ /* Request Tx irq */
for (i = 0; i < priv->plat->tx_queues_to_use; i++) {
if (i >= MTL_MAX_TX_QUEUES)
break;
@@ -3732,11 +3732,11 @@ static int stmmac_request_irq_multi_msi(struct net_device *dev)
int_name = priv->int_name_tx_irq[i];
sprintf(int_name, "%s:%s-%d", dev->name, "tx", i);
ret = request_irq(priv->tx_irq[i],
- stmmac_msi_intr_tx,
+ stmmac_dma_tx_interrupt,
0, int_name, &priv->dma_conf.tx_queue[i]);
if (unlikely(ret < 0)) {
netdev_err(priv->dev,
- "%s: alloc tx-%d MSI %d (error: %d)\n",
+ "%s: alloc tx-%d dma tx_irq %d (error: %d)\n",
__func__, i, priv->tx_irq[i], ret);
irq_err = REQ_IRQ_ERR_TX;
irq_idx = i;
@@ -3811,8 +3811,8 @@ static int stmmac_request_irq(struct net_device *dev)
int ret;
/* Request the IRQ lines */
- if (priv->plat->flags & STMMAC_FLAG_MULTI_MSI_EN)
- ret = stmmac_request_irq_multi_msi(dev);
+ if (priv->plat->flags & STMMAC_FLAG_MULTI_IRQ_EN)
+ ret = stmmac_request_irq_multi(dev);
else
ret = stmmac_request_irq_single(dev);
@@ -6075,7 +6075,7 @@ static irqreturn_t stmmac_safety_interrupt(int irq, void *dev_id)
return IRQ_HANDLED;
}
-static irqreturn_t stmmac_msi_intr_tx(int irq, void *data)
+static irqreturn_t stmmac_dma_tx_interrupt(int irq, void *data)
{
struct stmmac_tx_queue *tx_q = (struct stmmac_tx_queue *)data;
struct stmmac_dma_conf *dma_conf;
@@ -6107,7 +6107,7 @@ static irqreturn_t stmmac_msi_intr_tx(int irq, void *data)
return IRQ_HANDLED;
}
-static irqreturn_t stmmac_msi_intr_rx(int irq, void *data)
+static irqreturn_t stmmac_dma_rx_interrupt(int irq, void *data)
{
struct stmmac_rx_queue *rx_q = (struct stmmac_rx_queue *)data;
struct stmmac_dma_conf *dma_conf;
@@ -7456,8 +7456,8 @@ int stmmac_dvr_probe(struct device *device,
priv->plat = plat_dat;
priv->ioaddr = res->addr;
priv->dev->base_addr = (unsigned long)res->addr;
- priv->plat->dma_cfg->multi_msi_en =
- (priv->plat->flags & STMMAC_FLAG_MULTI_MSI_EN);
+ priv->plat->dma_cfg->multi_irq_en =
+ (priv->plat->flags & STMMAC_FLAG_MULTI_IRQ_EN);
priv->dev->irq = res->irq;
priv->wol_irq = res->wol_irq;
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index dee5ad6e48c5..b950e6f9761d 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h
@@ -98,7 +98,7 @@ struct stmmac_dma_cfg {
int mixed_burst;
bool aal;
bool eame;
- bool multi_msi_en;
+ bool multi_irq_en;
bool dche;
};
@@ -215,7 +215,7 @@ struct dwmac4_addrs {
#define STMMAC_FLAG_TSO_EN BIT(4)
#define STMMAC_FLAG_SERDES_UP_AFTER_PHY_LINKUP BIT(5)
#define STMMAC_FLAG_VLAN_FAIL_Q_EN BIT(6)
-#define STMMAC_FLAG_MULTI_MSI_EN BIT(7)
+#define STMMAC_FLAG_MULTI_IRQ_EN BIT(7)
#define STMMAC_FLAG_EXT_SNAPSHOT_EN BIT(8)
#define STMMAC_FLAG_INT_SNAPSHOT_EN BIT(9)
#define STMMAC_FLAG_RX_CLK_RUNS_IN_LPI BIT(10)
--
2.34.1