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-rw-r--r--drivers/net/mv643xx_eth.c201
1 files changed, 197 insertions, 4 deletions
diff --git a/drivers/net/mv643xx_eth.c b/drivers/net/mv643xx_eth.c
index 88a59d9715a..f100ca7d3ee 100644
--- a/drivers/net/mv643xx_eth.c
+++ b/drivers/net/mv643xx_eth.c
@@ -80,6 +80,7 @@
static int eth_port_link_is_up(unsigned int eth_port_num);
static void eth_port_uc_addr_get(struct net_device *dev,
unsigned char *MacAddr);
+static void eth_port_set_multicast_list(struct net_device *);
static int mv643xx_eth_real_open(struct net_device *);
static int mv643xx_eth_real_stop(struct net_device *);
static int mv643xx_eth_change_mtu(struct net_device *, int);
@@ -269,6 +270,8 @@ static void mv643xx_eth_set_rx_mode(struct net_device *dev)
mp->port_config &= ~(u32) MV643XX_ETH_UNICAST_PROMISCUOUS_MODE;
mv_write(MV643XX_ETH_PORT_CONFIG_REG(mp->port_num), mp->port_config);
+
+ eth_port_set_multicast_list(dev);
}
/*
@@ -2045,6 +2048,196 @@ static int eth_port_uc_addr(unsigned int eth_port_num, unsigned char uc_nibble,
}
/*
+ * The entries in each table are indexed by a hash of a packet's MAC
+ * address. One bit in each entry determines whether the packet is
+ * accepted. There are 4 entries (each 8 bits wide) in each register
+ * of the table. The bits in each entry are defined as follows:
+ * 0 Accept=1, Drop=0
+ * 3-1 Queue (ETH_Q0=0)
+ * 7-4 Reserved = 0;
+ */
+static void eth_port_set_filter_table_entry(int table, unsigned char entry)
+{
+ unsigned int table_reg;
+ unsigned int tbl_offset;
+ unsigned int reg_offset;
+
+ tbl_offset = (entry / 4) * 4; /* Register offset of DA table entry */
+ reg_offset = entry % 4; /* Entry offset within the register */
+
+ /* Set "accepts frame bit" at specified table entry */
+ table_reg = mv_read(table + tbl_offset);
+ table_reg |= 0x01 << (8 * reg_offset);
+ mv_write(table + tbl_offset, table_reg);
+}
+
+/*
+ * eth_port_mc_addr - Multicast address settings.
+ *
+ * The MV device supports multicast using two tables:
+ * 1) Special Multicast Table for MAC addresses of the form
+ * 0x01-00-5E-00-00-XX (where XX is between 0x00 and 0x_FF).
+ * The MAC DA[7:0] bits are used as a pointer to the Special Multicast
+ * Table entries in the DA-Filter table.
+ * 2) Other Multicast Table for multicast of another type. A CRC-8bit
+ * is used as an index to the Other Multicast Table entries in the
+ * DA-Filter table. This function calculates the CRC-8bit value.
+ * In either case, eth_port_set_filter_table_entry() is then called
+ * to set to set the actual table entry.
+ */
+static void eth_port_mc_addr(unsigned int eth_port_num, unsigned char *p_addr)
+{
+ unsigned int mac_h;
+ unsigned int mac_l;
+ unsigned char crc_result = 0;
+ int table;
+ int mac_array[48];
+ int crc[8];
+ int i;
+
+ if ((p_addr[0] == 0x01) && (p_addr[1] == 0x00) &&
+ (p_addr[2] == 0x5E) && (p_addr[3] == 0x00) && (p_addr[4] == 0x00)) {
+ table = MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
+ (eth_port_num);
+ eth_port_set_filter_table_entry(table, p_addr[5]);
+ return;
+ }
+
+ /* Calculate CRC-8 out of the given address */
+ mac_h = (p_addr[0] << 8) | (p_addr[1]);
+ mac_l = (p_addr[2] << 24) | (p_addr[3] << 16) |
+ (p_addr[4] << 8) | (p_addr[5] << 0);
+
+ for (i = 0; i < 32; i++)
+ mac_array[i] = (mac_l >> i) & 0x1;
+ for (i = 32; i < 48; i++)
+ mac_array[i] = (mac_h >> (i - 32)) & 0x1;
+
+ crc[0] = mac_array[45] ^ mac_array[43] ^ mac_array[40] ^ mac_array[39] ^
+ mac_array[35] ^ mac_array[34] ^ mac_array[31] ^ mac_array[30] ^
+ mac_array[28] ^ mac_array[23] ^ mac_array[21] ^ mac_array[19] ^
+ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^ mac_array[12] ^
+ mac_array[8] ^ mac_array[7] ^ mac_array[6] ^ mac_array[0];
+
+ crc[1] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
+ mac_array[41] ^ mac_array[39] ^ mac_array[36] ^ mac_array[34] ^
+ mac_array[32] ^ mac_array[30] ^ mac_array[29] ^ mac_array[28] ^
+ mac_array[24] ^ mac_array[23] ^ mac_array[22] ^ mac_array[21] ^
+ mac_array[20] ^ mac_array[18] ^ mac_array[17] ^ mac_array[16] ^
+ mac_array[15] ^ mac_array[14] ^ mac_array[13] ^ mac_array[12] ^
+ mac_array[9] ^ mac_array[6] ^ mac_array[1] ^ mac_array[0];
+
+ crc[2] = mac_array[47] ^ mac_array[46] ^ mac_array[44] ^ mac_array[43] ^
+ mac_array[42] ^ mac_array[39] ^ mac_array[37] ^ mac_array[34] ^
+ mac_array[33] ^ mac_array[29] ^ mac_array[28] ^ mac_array[25] ^
+ mac_array[24] ^ mac_array[22] ^ mac_array[17] ^ mac_array[15] ^
+ mac_array[13] ^ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^
+ mac_array[6] ^ mac_array[2] ^ mac_array[1] ^ mac_array[0];
+
+ crc[3] = mac_array[47] ^ mac_array[45] ^ mac_array[44] ^ mac_array[43] ^
+ mac_array[40] ^ mac_array[38] ^ mac_array[35] ^ mac_array[34] ^
+ mac_array[30] ^ mac_array[29] ^ mac_array[26] ^ mac_array[25] ^
+ mac_array[23] ^ mac_array[18] ^ mac_array[16] ^ mac_array[14] ^
+ mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[7] ^
+ mac_array[3] ^ mac_array[2] ^ mac_array[1];
+
+ crc[4] = mac_array[46] ^ mac_array[45] ^ mac_array[44] ^ mac_array[41] ^
+ mac_array[39] ^ mac_array[36] ^ mac_array[35] ^ mac_array[31] ^
+ mac_array[30] ^ mac_array[27] ^ mac_array[26] ^ mac_array[24] ^
+ mac_array[19] ^ mac_array[17] ^ mac_array[15] ^ mac_array[14] ^
+ mac_array[12] ^ mac_array[10] ^ mac_array[8] ^ mac_array[4] ^
+ mac_array[3] ^ mac_array[2];
+
+ crc[5] = mac_array[47] ^ mac_array[46] ^ mac_array[45] ^ mac_array[42] ^
+ mac_array[40] ^ mac_array[37] ^ mac_array[36] ^ mac_array[32] ^
+ mac_array[31] ^ mac_array[28] ^ mac_array[27] ^ mac_array[25] ^
+ mac_array[20] ^ mac_array[18] ^ mac_array[16] ^ mac_array[15] ^
+ mac_array[13] ^ mac_array[11] ^ mac_array[9] ^ mac_array[5] ^
+ mac_array[4] ^ mac_array[3];
+
+ crc[6] = mac_array[47] ^ mac_array[46] ^ mac_array[43] ^ mac_array[41] ^
+ mac_array[38] ^ mac_array[37] ^ mac_array[33] ^ mac_array[32] ^
+ mac_array[29] ^ mac_array[28] ^ mac_array[26] ^ mac_array[21] ^
+ mac_array[19] ^ mac_array[17] ^ mac_array[16] ^ mac_array[14] ^
+ mac_array[12] ^ mac_array[10] ^ mac_array[6] ^ mac_array[5] ^
+ mac_array[4];
+
+ crc[7] = mac_array[47] ^ mac_array[44] ^ mac_array[42] ^ mac_array[39] ^
+ mac_array[38] ^ mac_array[34] ^ mac_array[33] ^ mac_array[30] ^
+ mac_array[29] ^ mac_array[27] ^ mac_array[22] ^ mac_array[20] ^
+ mac_array[18] ^ mac_array[17] ^ mac_array[15] ^ mac_array[13] ^
+ mac_array[11] ^ mac_array[7] ^ mac_array[6] ^ mac_array[5];
+
+ for (i = 0; i < 8; i++)
+ crc_result = crc_result | (crc[i] << i);
+
+ table = MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num);
+ eth_port_set_filter_table_entry(table, crc_result);
+}
+
+/*
+ * Set the entire multicast list based on dev->mc_list.
+ */
+static void eth_port_set_multicast_list(struct net_device *dev)
+{
+
+ struct dev_mc_list *mc_list;
+ int i;
+ int table_index;
+ struct mv643xx_private *mp = netdev_priv(dev);
+ unsigned int eth_port_num = mp->port_num;
+
+ /* If the device is in promiscuous mode or in all multicast mode,
+ * we will fully populate both multicast tables with accept.
+ * This is guaranteed to yield a match on all multicast addresses...
+ */
+ if ((dev->flags & IFF_PROMISC) || (dev->flags & IFF_ALLMULTI)) {
+ for (table_index = 0; table_index <= 0xFC; table_index += 4) {
+ /* Set all entries in DA filter special multicast
+ * table (Ex_dFSMT)
+ * Set for ETH_Q0 for now
+ * Bits
+ * 0 Accept=1, Drop=0
+ * 3-1 Queue ETH_Q0=0
+ * 7-4 Reserved = 0;
+ */
+ mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
+
+ /* Set all entries in DA filter other multicast
+ * table (Ex_dFOMT)
+ * Set for ETH_Q0 for now
+ * Bits
+ * 0 Accept=1, Drop=0
+ * 3-1 Queue ETH_Q0=0
+ * 7-4 Reserved = 0;
+ */
+ mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE(eth_port_num) + table_index, 0x01010101);
+ }
+ return;
+ }
+
+ /* We will clear out multicast tables every time we get the list.
+ * Then add the entire new list...
+ */
+ for (table_index = 0; table_index <= 0xFC; table_index += 4) {
+ /* Clear DA filter special multicast table (Ex_dFSMT) */
+ mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
+
+ /* Clear DA filter other multicast table (Ex_dFOMT) */
+ mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
+ }
+
+ /* Get pointer to net_device multicast list and add each one... */
+ for (i = 0, mc_list = dev->mc_list;
+ (i < 256) && (mc_list != NULL) && (i < dev->mc_count);
+ i++, mc_list = mc_list->next)
+ if (mc_list->dmi_addrlen == 6)
+ eth_port_mc_addr(eth_port_num, mc_list->dmi_addr);
+}
+
+/*
* eth_port_init_mac_tables - Clear all entrance in the UC, SMC and OMC tables
*
* DESCRIPTION:
@@ -2071,11 +2264,11 @@ static void eth_port_init_mac_tables(unsigned int eth_port_num)
for (table_index = 0; table_index <= 0xFC; table_index += 4) {
/* Clear DA filter special multicast table (Ex_dFSMT) */
- mv_write((MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index), 0);
+ mv_write(MV643XX_ETH_DA_FILTER_SPECIAL_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
/* Clear DA filter other multicast table (Ex_dFOMT) */
- mv_write((MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
- (eth_port_num) + table_index), 0);
+ mv_write(MV643XX_ETH_DA_FILTER_OTHER_MULTICAST_TABLE_BASE
+ (eth_port_num) + table_index, 0);
}
}
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2024-11-19 10:31:34 +0000