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path: root/drivers/net/ethernet/broadcom/genet/bcmgenet.c
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Diffstat (limited to 'drivers/net/ethernet/broadcom/genet/bcmgenet.c')
-rw-r--r--drivers/net/ethernet/broadcom/genet/bcmgenet.c88
1 files changed, 48 insertions, 40 deletions
diff --git a/drivers/net/ethernet/broadcom/genet/bcmgenet.c b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
index 5cc9cae21ed5..fff2634b6f34 100644
--- a/drivers/net/ethernet/broadcom/genet/bcmgenet.c
+++ b/drivers/net/ethernet/broadcom/genet/bcmgenet.c
@@ -191,8 +191,9 @@ enum dma_reg {
DMA_STATUS,
DMA_SCB_BURST_SIZE,
DMA_ARB_CTRL,
- DMA_PRIORITY,
- DMA_RING_PRIORITY,
+ DMA_PRIORITY_0,
+ DMA_PRIORITY_1,
+ DMA_PRIORITY_2,
};
static const u8 bcmgenet_dma_regs_v3plus[] = {
@@ -201,8 +202,9 @@ static const u8 bcmgenet_dma_regs_v3plus[] = {
[DMA_STATUS] = 0x08,
[DMA_SCB_BURST_SIZE] = 0x0C,
[DMA_ARB_CTRL] = 0x2C,
- [DMA_PRIORITY] = 0x30,
- [DMA_RING_PRIORITY] = 0x38,
+ [DMA_PRIORITY_0] = 0x30,
+ [DMA_PRIORITY_1] = 0x34,
+ [DMA_PRIORITY_2] = 0x38,
};
static const u8 bcmgenet_dma_regs_v2[] = {
@@ -211,8 +213,9 @@ static const u8 bcmgenet_dma_regs_v2[] = {
[DMA_STATUS] = 0x08,
[DMA_SCB_BURST_SIZE] = 0x0C,
[DMA_ARB_CTRL] = 0x30,
- [DMA_PRIORITY] = 0x34,
- [DMA_RING_PRIORITY] = 0x3C,
+ [DMA_PRIORITY_0] = 0x34,
+ [DMA_PRIORITY_1] = 0x38,
+ [DMA_PRIORITY_2] = 0x3C,
};
static const u8 bcmgenet_dma_regs_v1[] = {
@@ -220,8 +223,9 @@ static const u8 bcmgenet_dma_regs_v1[] = {
[DMA_STATUS] = 0x04,
[DMA_SCB_BURST_SIZE] = 0x0C,
[DMA_ARB_CTRL] = 0x30,
- [DMA_PRIORITY] = 0x34,
- [DMA_RING_PRIORITY] = 0x3C,
+ [DMA_PRIORITY_0] = 0x34,
+ [DMA_PRIORITY_1] = 0x38,
+ [DMA_PRIORITY_2] = 0x3C,
};
/* Set at runtime once bcmgenet version is known */
@@ -1054,7 +1058,8 @@ static int bcmgenet_xmit_frag(struct net_device *dev,
/* Reallocate the SKB to put enough headroom in front of it and insert
* the transmit checksum offsets in the descriptors
*/
-static int bcmgenet_put_tx_csum(struct net_device *dev, struct sk_buff *skb)
+static struct sk_buff *bcmgenet_put_tx_csum(struct net_device *dev,
+ struct sk_buff *skb)
{
struct status_64 *status = NULL;
struct sk_buff *new_skb;
@@ -1072,7 +1077,7 @@ static int bcmgenet_put_tx_csum(struct net_device *dev, struct sk_buff *skb)
if (!new_skb) {
dev->stats.tx_errors++;
dev->stats.tx_dropped++;
- return -ENOMEM;
+ return NULL;
}
skb = new_skb;
}
@@ -1090,7 +1095,7 @@ static int bcmgenet_put_tx_csum(struct net_device *dev, struct sk_buff *skb)
ip_proto = ipv6_hdr(skb)->nexthdr;
break;
default:
- return 0;
+ return skb;
}
offset = skb_checksum_start_offset(skb) - sizeof(*status);
@@ -1111,7 +1116,7 @@ static int bcmgenet_put_tx_csum(struct net_device *dev, struct sk_buff *skb)
status->tx_csum_info = tx_csum_info;
}
- return 0;
+ return skb;
}
static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
@@ -1158,8 +1163,8 @@ static netdev_tx_t bcmgenet_xmit(struct sk_buff *skb, struct net_device *dev)
/* set the SKB transmit checksum */
if (priv->desc_64b_en) {
- ret = bcmgenet_put_tx_csum(dev, skb);
- if (ret) {
+ skb = bcmgenet_put_tx_csum(dev, skb);
+ if (!skb) {
ret = NETDEV_TX_OK;
goto out;
}
@@ -1695,7 +1700,8 @@ static void bcmgenet_init_multiq(struct net_device *dev)
{
struct bcmgenet_priv *priv = netdev_priv(dev);
unsigned int i, dma_enable;
- u32 reg, dma_ctrl, ring_cfg = 0, dma_priority = 0;
+ u32 reg, dma_ctrl, ring_cfg = 0;
+ u32 dma_priority[3] = {0, 0, 0};
if (!netif_is_multiqueue(dev)) {
netdev_warn(dev, "called with non multi queue aware HW\n");
@@ -1720,22 +1726,25 @@ static void bcmgenet_init_multiq(struct net_device *dev)
/* Configure ring as descriptor ring and setup priority */
ring_cfg |= 1 << i;
- dma_priority |= ((GENET_Q0_PRIORITY + i) <<
- (GENET_MAX_MQ_CNT + 1) * i);
dma_ctrl |= 1 << (i + DMA_RING_BUF_EN_SHIFT);
+
+ dma_priority[DMA_PRIO_REG_INDEX(i)] |=
+ ((GENET_Q0_PRIORITY + i) << DMA_PRIO_REG_SHIFT(i));
}
+ /* Set ring 16 priority and program the hardware registers */
+ dma_priority[DMA_PRIO_REG_INDEX(DESC_INDEX)] |=
+ ((GENET_Q0_PRIORITY + priv->hw_params->tx_queues) <<
+ DMA_PRIO_REG_SHIFT(DESC_INDEX));
+ bcmgenet_tdma_writel(priv, dma_priority[0], DMA_PRIORITY_0);
+ bcmgenet_tdma_writel(priv, dma_priority[1], DMA_PRIORITY_1);
+ bcmgenet_tdma_writel(priv, dma_priority[2], DMA_PRIORITY_2);
+
/* Enable rings */
reg = bcmgenet_tdma_readl(priv, DMA_RING_CFG);
reg |= ring_cfg;
bcmgenet_tdma_writel(priv, reg, DMA_RING_CFG);
- /* Use configured rings priority and set ring #16 priority */
- reg = bcmgenet_tdma_readl(priv, DMA_RING_PRIORITY);
- reg |= ((GENET_Q0_PRIORITY + priv->hw_params->tx_queues) << 20);
- reg |= dma_priority;
- bcmgenet_tdma_writel(priv, reg, DMA_PRIORITY);
-
/* Configure ring as descriptor ring and re-enable DMA if enabled */
reg = bcmgenet_tdma_readl(priv, DMA_CTRL);
reg |= dma_ctrl;
@@ -2017,19 +2026,6 @@ static void bcmgenet_set_hw_addr(struct bcmgenet_priv *priv,
bcmgenet_umac_writel(priv, (addr[4] << 8) | addr[5], UMAC_MAC1);
}
-static int bcmgenet_wol_resume(struct bcmgenet_priv *priv)
-{
- /* From WOL-enabled suspend, switch to regular clock */
- if (priv->wolopts)
- clk_disable_unprepare(priv->clk_wol);
-
- phy_init_hw(priv->phydev);
- /* Speed settings must be restored */
- bcmgenet_mii_config(priv->dev);
-
- return 0;
-}
-
/* Returns a reusable dma control register value */
static u32 bcmgenet_dma_disable(struct bcmgenet_priv *priv)
{
@@ -2174,9 +2170,10 @@ static void bcmgenet_netif_stop(struct net_device *dev)
*/
cancel_work_sync(&priv->bcmgenet_irq_work);
- priv->old_pause = -1;
priv->old_link = -1;
+ priv->old_speed = -1;
priv->old_duplex = -1;
+ priv->old_pause = -1;
}
static int bcmgenet_close(struct net_device *dev)
@@ -2439,6 +2436,13 @@ static void bcmgenet_set_hw_params(struct bcmgenet_priv *priv)
dev_info(&priv->pdev->dev, "GENET " GENET_VER_FMT,
major, (reg >> 16) & 0x0f, reg & 0xffff);
+ /* Store the integrated PHY revision for the MDIO probing function
+ * to pass this information to the PHY driver. The PHY driver expects
+ * to find the PHY major revision in bits 15:8 while the GENET register
+ * stores that information in bits 7:0, account for that.
+ */
+ priv->gphy_rev = (reg & 0xffff) << 8;
+
#ifdef CONFIG_PHYS_ADDR_T_64BIT
if (!(params->flags & GENET_HAS_40BITS))
pr_warn("GENET does not support 40-bits PA\n");
@@ -2676,9 +2680,13 @@ static int bcmgenet_resume(struct device *d)
if (ret)
goto out_clk_disable;
- ret = bcmgenet_wol_resume(priv);
- if (ret)
- goto out_clk_disable;
+ /* From WOL-enabled suspend, switch to regular clock */
+ if (priv->wolopts)
+ clk_disable_unprepare(priv->clk_wol);
+
+ phy_init_hw(priv->phydev);
+ /* Speed settings must be restored */
+ bcmgenet_mii_config(priv->dev);
/* disable ethernet MAC while updating its registers */
umac_enable_set(priv, CMD_TX_EN | CMD_RX_EN, false);
generated by cgit v1.2.3 (git 2.39.0) at 2025-01-18 09:22:04 +0300