int (*host_irq_status)(struct mac_device_info *hw,
struct stmmac_extra_stats *x);
/* Multicast filter setting */
- void (*set_filter)(struct net_device *dev);
+ void (*set_filter)(struct mac_device_info *hw, struct net_device *dev);
/* Flow control setting */
void (*flow_ctrl)(struct mac_device_info *hw, unsigned int duplex,
unsigned int fc, unsigned int pause_time);
struct mac_link link;
unsigned int synopsys_uid;
void __iomem *pcsr; /* vpointer to device CSRs */
+ int multicast_filter_bins;
+ int unicast_filter_entries;
+ int mcast_bits_log2;
};
-struct mac_device_info *dwmac1000_setup(void __iomem *ioaddr);
+struct mac_device_info *dwmac1000_setup(void __iomem *ioaddr, int mcbins,
+ int perfect_uc_entries);
struct mac_device_info *dwmac100_setup(void __iomem *ioaddr);
void stmmac_set_mac_addr(void __iomem *ioaddr, u8 addr[6],
#define GMAC_MMC_RX_INTR 0x104
#define GMAC_MMC_TX_INTR 0x108
#define GMAC_MMC_RX_CSUM_OFFLOAD 0x208
+#define GMAC_EXTHASH_BASE 0x500
extern const struct stmmac_dma_ops dwmac1000_dma_ops;
#endif /* __DWMAC1000_H__ */
GMAC_ADDR_LOW(reg_n));
}
-static void dwmac1000_set_filter(struct net_device *dev)
+static void dwmac1000_set_mchash(void __iomem *ioaddr, u32 *mcfilterbits,
+ int mcbitslog2)
+{
+ int numhashregs, regs;
+
+ switch (mcbitslog2) {
+ case 6:
+ writel(mcfilterbits[0], ioaddr + GMAC_HASH_LOW);
+ writel(mcfilterbits[1], ioaddr + GMAC_HASH_HIGH);
+ return;
+ break;
+ case 7:
+ numhashregs = 4;
+ break;
+ case 8:
+ numhashregs = 8;
+ break;
+ default:
+ pr_debug("STMMAC: err in setting mulitcast filter\n");
+ return;
+ break;
+ }
+ for (regs = 0; regs < numhashregs; regs++)
+ writel(mcfilterbits[regs],
+ ioaddr + GMAC_EXTHASH_BASE + regs * 4);
+}
+
+static void dwmac1000_set_filter(struct mac_device_info *hw,
+ struct net_device *dev)
{
void __iomem *ioaddr = (void __iomem *)dev->base_addr;
unsigned int value = 0;
- unsigned int perfect_addr_number;
+ unsigned int perfect_addr_number = hw->unicast_filter_entries;
u32 mc_filter[2];
+ int mcbitslog2 = hw->mcast_bits_log2;
pr_debug("%s: # mcasts %d, # unicast %d\n", __func__,
netdev_mc_count(dev), netdev_uc_count(dev));
value = GMAC_FRAME_FILTER_HMC;
netdev_for_each_mc_addr(ha, dev) {
- /* The upper 6 bits of the calculated CRC are used to
- * index the contens of the hash table
+ /* The upper n bits of the calculated CRC are used to
+ * index the contents of the hash table. The number of
+ * bits used depends on the hardware configuration
+ * selected at core configuration time.
*/
- int bit_nr = bitrev32(~crc32_le(~0, ha->addr, 6)) >> 26;
+ int bit_nr = bitrev32(~crc32_le(~0, ha->addr,
+ ETH_ALEN)) >>
+ (32 - mcbitslog2);
/* The most significant bit determines the register to
* use (H/L) while the other 5 bits determine the bit
* within the register.
}
}
- writel(mc_filter[0], ioaddr + GMAC_HASH_LOW);
- writel(mc_filter[1], ioaddr + GMAC_HASH_HIGH);
-
- perfect_addr_number = GMAC_MAX_PERFECT_ADDRESSES;
+ dwmac1000_set_mchash(ioaddr, mc_filter, mcbitslog2);
/* Handle multiple unicast addresses (perfect filtering) */
if (netdev_uc_count(dev) > perfect_addr_number)
- /* Switch to promiscuous mode if more than 16 addrs
- * are required
+ /* Switch to promiscuous mode if more than unicast
+ * addresses are requested than supported by hardware.
*/
value |= GMAC_FRAME_FILTER_PR;
else {
value |= GMAC_FRAME_FILTER_RA;
#endif
writel(value, ioaddr + GMAC_FRAME_FILTER);
-
- pr_debug("\tFilter: 0x%08x\n\tHash: HI 0x%08x, LO 0x%08x\n",
- readl(ioaddr + GMAC_FRAME_FILTER),
- readl(ioaddr + GMAC_HASH_HIGH), readl(ioaddr + GMAC_HASH_LOW));
}
.get_adv = dwmac1000_get_adv,
};
-struct mac_device_info *dwmac1000_setup(void __iomem *ioaddr)
+struct mac_device_info *dwmac1000_setup(void __iomem *ioaddr, int mcbins,
+ int perfect_uc_entries)
{
struct mac_device_info *mac;
u32 hwid = readl(ioaddr + GMAC_VERSION);
return NULL;
mac->pcsr = ioaddr;
+ mac->multicast_filter_bins = mcbins;
+ mac->unicast_filter_entries = perfect_uc_entries;
+ mac->mcast_bits_log2 = 0;
+
+ if (mac->multicast_filter_bins)
+ mac->mcast_bits_log2 = ilog2(mac->multicast_filter_bins);
+
mac->mac = &dwmac1000_ops;
mac->dma = &dwmac1000_dma_ops;
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 mac_device_info *hw,
+ struct net_device *dev)
{
void __iomem *ioaddr = (void __iomem *)dev->base_addr;
u32 value = readl(ioaddr + MAC_CONTROL);
struct stmmac_priv *priv = netdev_priv(dev);
spin_lock(&priv->lock);
- priv->hw->mac->set_filter(dev);
+ priv->hw->mac->set_filter(priv->hw, dev);
spin_unlock(&priv->lock);
}
/* Identify the MAC HW device */
if (priv->plat->has_gmac) {
priv->dev->priv_flags |= IFF_UNICAST_FLT;
- mac = dwmac1000_setup(priv->ioaddr);
+ mac = dwmac1000_setup(priv->ioaddr,
+ priv->plat->multicast_filter_bins,
+ priv->plat->unicast_filter_entries);
} else {
mac = dwmac100_setup(priv->ioaddr);
}
MODULE_DEVICE_TABLE(of, stmmac_dt_ids);
#ifdef CONFIG_OF
+
+/* This function validates the number of Multicast filtering bins specified
+ * by the configuration through the device tree. The Synopsys GMAC supports
+ * 64 bins, 128 bins, or 256 bins. "bins" refer to the division of CRC
+ * number space. 64 bins correspond to 6 bits of the CRC, 128 corresponds
+ * to 7 bits, and 256 refers to 8 bits of the CRC. Any other setting is
+ * invalid and will cause the filtering algorithm to use Multicast
+ * promiscuous mode.
+ */
+static int dwmac1000_validate_mcast_bins(int mcast_bins)
+{
+ int x = mcast_bins;
+
+ switch (x) {
+ case HASH_TABLE_SIZE:
+ case 128:
+ case 256:
+ break;
+ default:
+ x = 0;
+ pr_info("Hash table entries set to unexpected value %d",
+ mcast_bins);
+ break;
+ }
+ return x;
+}
+
+/* This function validates the number of Unicast address entries supported
+ * by a particular Synopsys 10/100/1000 controller. The Synopsys controller
+ * supports 1, 32, 64, or 128 Unicast filter entries for it's Unicast filter
+ * logic. This function validates a valid, supported configuration is
+ * selected, and defaults to 1 Unicast address if an unsupported
+ * configuration is selected.
+ */
+static int dwmac1000_validate_ucast_entries(int ucast_entries)
+{
+ int x = ucast_entries;
+
+ switch (x) {
+ case 1:
+ case 32:
+ case 64:
+ case 128:
+ break;
+ default:
+ x = 1;
+ pr_info("Unicast table entries set to unexpected value %d\n",
+ ucast_entries);
+ break;
+ }
+ return x;
+}
+
static int stmmac_probe_config_dt(struct platform_device *pdev,
struct plat_stmmacenet_data *plat,
const char **mac)
*/
plat->maxmtu = JUMBO_LEN;
+ /* Set default value for multicast hash bins */
+ plat->multicast_filter_bins = HASH_TABLE_SIZE;
+
+ /* Set default value for unicast filter entries */
+ plat->unicast_filter_entries = 1;
+
/*
* Currently only the properties needed on SPEAr600
* are provided. All other properties should be added
* are clearly MTUs
*/
of_property_read_u32(np, "max-frame-size", &plat->maxmtu);
+ of_property_read_u32(np, "snps,multicast-filter-bins",
+ &plat->multicast_filter_bins);
+ of_property_read_u32(np, "snps,perfect-filter-entries",
+ &plat->unicast_filter_entries);
+ plat->unicast_filter_entries = dwmac1000_validate_ucast_entries(
+ plat->unicast_filter_entries);
+ plat->multicast_filter_bins = dwmac1000_validate_mcast_bins(
+ plat->multicast_filter_bins);
plat->has_gmac = 1;
plat->pmt = 1;
}
int riwt_off;
int max_speed;
int maxmtu;
+ int multicast_filter_bins;
+ int unicast_filter_entries;
void (*fix_mac_speed)(void *priv, unsigned int speed);
void (*bus_setup)(void __iomem *ioaddr);
void *(*setup)(struct platform_device *pdev);
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