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Date: Mon, 7 May 2012 11:12:32 +0200
From: Giuseppe CAVALLARO <peppe.cavallaro@...com>
To: netdev@...r.kernel.org
Cc: Giuseppe Cavallaro <peppe.cavallaro@...com>,
Gianni Antoniazzi <gianni.antoniazzi-ext@...com>
Subject: [net-next 1/2] stmmac: extend mac addr reg and fix perfect filering
This patch is to extend the number of MAC address registers
for 16 to 32. In fact, other new 16 registers are available in new
chips and this can help on perfect filter mode for unicast.
This patch also fixes the perfect filtering mode by setting the
bit 31 in the MAC address registers.
Signed-off-by: Gianni Antoniazzi <gianni.antoniazzi-ext@...com>
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@...com>
---
drivers/net/ethernet/stmicro/stmmac/common.h | 2 +-
drivers/net/ethernet/stmicro/stmmac/dwmac1000.h | 8 +++++---
.../net/ethernet/stmicro/stmmac/dwmac1000_core.c | 11 +++++++++--
.../net/ethernet/stmicro/stmmac/dwmac100_core.c | 2 +-
drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c | 7 ++++++-
drivers/net/ethernet/stmicro/stmmac/stmmac.h | 1 +
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 4 ++--
7 files changed, 25 insertions(+), 10 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/common.h b/drivers/net/ethernet/stmicro/stmmac/common.h
index f5dedcb..7164509 100644
--- a/drivers/net/ethernet/stmicro/stmmac/common.h
+++ b/drivers/net/ethernet/stmicro/stmmac/common.h
@@ -280,7 +280,7 @@ struct stmmac_ops {
/* Handle extra events on specific interrupts hw dependent */
void (*host_irq_status) (void __iomem *ioaddr);
/* Multicast filter setting */
- void (*set_filter) (struct net_device *dev);
+ void (*set_filter) (struct net_device *dev, int id);
/* Flow control setting */
void (*flow_ctrl) (void __iomem *ioaddr, unsigned int duplex,
unsigned int fc, unsigned int pause_time);
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
index 54339a7..53ed56b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h
@@ -61,9 +61,11 @@ enum power_event {
};
/* GMAC HW ADDR regs */
-#define GMAC_ADDR_HIGH(reg) (0x00000040+(reg * 8))
-#define GMAC_ADDR_LOW(reg) (0x00000044+(reg * 8))
-#define GMAC_MAX_UNICAST_ADDRESSES 16
+#define GMAC_ADDR_HIGH(reg) (((reg > 15) ? 0x00000800 : 0x00000040) + \
+ (reg * 8))
+#define GMAC_ADDR_LOW(reg) (((reg > 15) ? 0x00000804 : 0x00000044) + \
+ (reg * 8))
+#define GMAC_MAX_PERFECT_ADDRESSES 32
#define GMAC_AN_CTRL 0x000000c0 /* AN control */
#define GMAC_AN_STATUS 0x000000c4 /* AN status */
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
index e7cbcd9..c32af05 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c
@@ -84,10 +84,11 @@ static void dwmac1000_get_umac_addr(void __iomem *ioaddr, unsigned char *addr,
GMAC_ADDR_LOW(reg_n));
}
-static void dwmac1000_set_filter(struct net_device *dev)
+static void dwmac1000_set_filter(struct net_device *dev, int id)
{
void __iomem *ioaddr = (void __iomem *) dev->base_addr;
unsigned int value = 0;
+ unsigned int perfect_addr_number;
CHIP_DBG(KERN_INFO "%s: # mcasts %d, # unicast %d\n",
__func__, netdev_mc_count(dev), netdev_uc_count(dev));
@@ -121,8 +122,14 @@ static void dwmac1000_set_filter(struct net_device *dev)
writel(mc_filter[1], ioaddr + GMAC_HASH_HIGH);
}
+ /* Extra 16 regs are available in cores newer than the 3.40. */
+ if (id > 34)
+ perfect_addr_number = GMAC_MAX_PERFECT_ADDRESSES;
+ else
+ perfect_addr_number = GMAC_MAX_PERFECT_ADDRESSES / 2;
+
/* Handle multiple unicast addresses (perfect filtering)*/
- if (netdev_uc_count(dev) > GMAC_MAX_UNICAST_ADDRESSES)
+ if (netdev_uc_count(dev) > perfect_addr_number)
/* Switch to promiscuous mode is more than 16 addrs
are required */
value |= GMAC_FRAME_FILTER_PR;
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
index efde50f..19e0f4e 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac100_core.c
@@ -89,7 +89,7 @@ static void dwmac100_get_umac_addr(void __iomem *ioaddr, unsigned char *addr,
stmmac_get_mac_addr(ioaddr, addr, MAC_ADDR_HIGH, MAC_ADDR_LOW);
}
-static void dwmac100_set_filter(struct net_device *dev)
+static void dwmac100_set_filter(struct net_device *dev, int id)
{
void __iomem *ioaddr = (void __iomem *) dev->base_addr;
u32 value = readl(ioaddr + MAC_CONTROL);
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
index f20aa12..3edbfa2 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac_lib.c
@@ -31,6 +31,8 @@
#define DWMAC_LIB_DBG(fmt, args...) do { } while (0)
#endif
+#define GMAC_HI_REG_AE 0x80000000
+
/* CSR1 enables the transmit DMA to check for new descriptor */
void dwmac_enable_dma_transmission(void __iomem *ioaddr)
{
@@ -233,7 +235,10 @@ void stmmac_set_mac_addr(void __iomem *ioaddr, u8 addr[6],
unsigned long data;
data = (addr[5] << 8) | addr[4];
- writel(data, ioaddr + high);
+ /* For MAC Addr registers se have to set the Address Enable (AE)
+ * bit that has no effect on the High Reg 0 where the bit 31 (MO)
+ * is RO. */
+ writel(data | GMAC_HI_REG_AE, ioaddr + high);
data = (addr[3] << 24) | (addr[2] << 16) | (addr[1] << 8) | addr[0];
writel(data, ioaddr + low);
}
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac.h b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
index db2de9a..6b5d060 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac.h
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac.h
@@ -85,6 +85,7 @@ struct stmmac_priv {
struct clk *stmmac_clk;
#endif
int clk_csr;
+ int synopsys_id;
};
extern int phyaddr;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 1a4cf81..a9699ae 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -1465,7 +1465,7 @@ static void stmmac_set_rx_mode(struct net_device *dev)
struct stmmac_priv *priv = netdev_priv(dev);
spin_lock(&priv->lock);
- priv->hw->mac->set_filter(dev);
+ priv->hw->mac->set_filter(dev, priv->synopsys_id);
spin_unlock(&priv->lock);
}
@@ -1806,7 +1806,7 @@ static int stmmac_hw_init(struct stmmac_priv *priv)
priv->hw->ring = &ring_mode_ops;
/* Get and dump the chip ID */
- stmmac_get_synopsys_id(priv);
+ priv->synopsys_id = stmmac_get_synopsys_id(priv);
/* Get the HW capability (new GMAC newer than 3.50a) */
priv->hw_cap_support = stmmac_get_hw_features(priv);
--
1.7.4.4
--
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