diff options
Diffstat (limited to 'board/evb64260/eth_addrtbl.c')
| -rw-r--r-- | board/evb64260/eth_addrtbl.c | 218 |
1 files changed, 0 insertions, 218 deletions
diff --git a/board/evb64260/eth_addrtbl.c b/board/evb64260/eth_addrtbl.c deleted file mode 100644 index 8c2c17f962..0000000000 --- a/board/evb64260/eth_addrtbl.c +++ /dev/null @@ -1,218 +0,0 @@ -#include <common.h> -#include <malloc.h> -#include <galileo/gt64260R.h> -#include <galileo/core.h> -#include <asm/cache.h> -#include "eth.h" -#include "eth_addrtbl.h" - -#define PRINTF printf - -#ifdef CONFIG_GT_USE_MAC_HASH_TABLE - -static u32 addressTableHashMode[GAL_ETH_DEVS] = { 0, }; -static u32 addressTableHashSize[GAL_ETH_DEVS] = { 0, }; -static addrTblEntry *addressTableBase[GAL_ETH_DEVS] = { 0, }; -static void *realAddrTableBase[GAL_ETH_DEVS] = { 0, }; - -static const u32 hashLength[2] = { - (0x8000), /* 8K * 4 entries */ - (0x8000 / 16), /* 512 * 4 entries */ -}; - -/* Initialize the address table for a port, if needed */ -unsigned int initAddressTable (u32 port, u32 hashMode, u32 hashSizeSelector) -{ - unsigned int tableBase; - - if (port < 0 || port >= GAL_ETH_DEVS) { - printf ("%s: Invalid port number %d\n", __FUNCTION__, port); - return 0; - } - - if (hashMode > 1) { - printf ("%s: Invalid Hash Mode %d\n", __FUNCTION__, port); - return 0; - } - - if (realAddrTableBase[port] && - (addressTableHashSize[port] != hashSizeSelector)) { - /* we have been here before, - * but now we want a different sized table - */ - free (realAddrTableBase[port]); - realAddrTableBase[port] = 0; - addressTableBase[port] = 0; - - } - - tableBase = (unsigned int) addressTableBase[port]; - /* we get called for every probe, so only do this once */ - if (!tableBase) { - int bytes = - hashLength[hashSizeSelector] * sizeof (addrTblEntry); - - realAddrTableBase[port] = - malloc (bytes + 64); - tableBase = (unsigned int)realAddrTableBase; - - if (!tableBase) { - printf ("%s: alloc memory failed \n", __FUNCTION__); - return 0; - } - - /* align to octal byte */ - if (tableBase & 63) - tableBase = (tableBase + 63) & ~63; - - addressTableHashMode[port] = hashMode; - addressTableHashSize[port] = hashSizeSelector; - addressTableBase[port] = (addrTblEntry *) tableBase; - - memset ((void *) tableBase, 0, bytes); - } - - return tableBase; -} - -/* - * ---------------------------------------------------------------------------- - * This function will calculate the hash function of the address. - * depends on the hash mode and hash size. - * Inputs - * macH - the 2 most significant bytes of the MAC address. - * macL - the 4 least significant bytes of the MAC address. - * hashMode - hash mode 0 or hash mode 1. - * hashSizeSelector - indicates number of hash table entries (0=0x8000,1=0x800) - * Outputs - * return the calculated entry. - */ -u32 hashTableFunction (u32 macH, u32 macL, u32 HashSize, u32 hash_mode) -{ - u32 hashResult; - u32 addrH; - u32 addrL; - u32 addr0; - u32 addr1; - u32 addr2; - u32 addr3; - u32 addrHSwapped; - u32 addrLSwapped; - - - addrH = NIBBLE_SWAPPING_16_BIT (macH); - addrL = NIBBLE_SWAPPING_32_BIT (macL); - - addrHSwapped = FLIP_4_BITS (addrH & 0xf) - + ((FLIP_4_BITS ((addrH >> 4) & 0xf)) << 4) - + ((FLIP_4_BITS ((addrH >> 8) & 0xf)) << 8) - + ((FLIP_4_BITS ((addrH >> 12) & 0xf)) << 12); - - addrLSwapped = FLIP_4_BITS (addrL & 0xf) - + ((FLIP_4_BITS ((addrL >> 4) & 0xf)) << 4) - + ((FLIP_4_BITS ((addrL >> 8) & 0xf)) << 8) - + ((FLIP_4_BITS ((addrL >> 12) & 0xf)) << 12) - + ((FLIP_4_BITS ((addrL >> 16) & 0xf)) << 16) - + ((FLIP_4_BITS ((addrL >> 20) & 0xf)) << 20) - + ((FLIP_4_BITS ((addrL >> 24) & 0xf)) << 24) - + ((FLIP_4_BITS ((addrL >> 28) & 0xf)) << 28); - - addrH = addrHSwapped; - addrL = addrLSwapped; - - if (hash_mode == 0) { - addr0 = (addrL >> 2) & 0x03f; - addr1 = (addrL & 0x003) | ((addrL >> 8) & 0x7f) << 2; - addr2 = (addrL >> 15) & 0x1ff; - addr3 = ((addrL >> 24) & 0x0ff) | ((addrH & 1) << 8); - } else { - addr0 = FLIP_6_BITS (addrL & 0x03f); - addr1 = FLIP_9_BITS (((addrL >> 6) & 0x1ff)); - addr2 = FLIP_9_BITS ((addrL >> 15) & 0x1ff); - addr3 = FLIP_9_BITS ((((addrL >> 24) & 0x0ff) | - ((addrH & 0x1) << 8))); - } - - hashResult = (addr0 << 9) | (addr1 ^ addr2 ^ addr3); - - if (HashSize == _8K_TABLE) { - hashResult = hashResult & 0xffff; - } else { - hashResult = hashResult & 0x07ff; - } - - return (hashResult); -} - - -/* - * ---------------------------------------------------------------------------- - * This function will add an entry to the address table. - * depends on the hash mode and hash size that was initialized. - * Inputs - * port - ETHERNET port number. - * macH - the 2 most significant bytes of the MAC address. - * macL - the 4 least significant bytes of the MAC address. - * skip - if 1, skip this address. - * rd - the RD field in the address table. - * Outputs - * address table entry is added. - * true if success. - * false if table full - */ -int addAddressTableEntry (u32 port, u32 macH, u32 macL, u32 rd, u32 skip) -{ - addrTblEntry *entry; - u32 newHi; - u32 newLo; - u32 i; - - newLo = (((macH >> 4) & 0xf) << 15) - | (((macH >> 0) & 0xf) << 11) - | (((macH >> 12) & 0xf) << 7) - | (((macH >> 8) & 0xf) << 3) - | (((macL >> 20) & 0x1) << 31) - | (((macL >> 16) & 0xf) << 27) - | (((macL >> 28) & 0xf) << 23) - | (((macL >> 24) & 0xf) << 19) - | (skip << SKIP_BIT) | (rd << 2) | VALID; - - newHi = (((macL >> 4) & 0xf) << 15) - | (((macL >> 0) & 0xf) << 11) - | (((macL >> 12) & 0xf) << 7) - | (((macL >> 8) & 0xf) << 3) - | (((macL >> 21) & 0x7) << 0); - - /* - * Pick the appropriate table, start scanning for free/reusable - * entries at the index obtained by hashing the specified MAC address - */ - entry = addressTableBase[port]; - entry += hashTableFunction (macH, macL, addressTableHashSize[port], - addressTableHashMode[port]); - for (i = 0; i < HOP_NUMBER; i++, entry++) { - if (!(entry->lo & VALID) /*|| (entry->lo & SKIP) */ ) { - break; - } else { /* if same address put in same position */ - if (((entry->lo & 0xfffffff8) == (newLo & 0xfffffff8)) - && (entry->hi == newHi)) { - break; - } - } - } - - if (i == HOP_NUMBER) { - PRINTF ("addGT64260addressTableEntry: table section is full\n"); - return false; - } - - /* - * Update the selected entry - */ - entry->hi = newHi; - entry->lo = newLo; - DCACHE_FLUSH_N_SYNC ((u32) entry, MAC_ENTRY_SIZE); - return true; -} - -#endif /* CONFIG_GT_USE_MAC_HASH_TABLE */ |
