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e1000e: alternate MAC address support

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Port alternate MAC address support from the sourceforge
e1000 driver to the upstream e1000e driver.

Signed-off-by: Bill Hayes <bill.hayes@hp.com>
Signed-off-by: Auke Kok <auke-jan.h.kok@intel.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
This commit is contained in:
Bill Hayes
2007-10-31 15:21:52 -07:00
committed by David S. Miller
parent 3df5920c46
commit 93ca161027
4 changed files with 43 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

39
drivers/net/e1000e/lib.c
View File

@ -2059,9 +2059,44 @@ s32 e1000e_read_mac_addr(struct e1000_hw *hw)
{
s32 ret_val;
u16 offset, nvm_data, i;
u16 mac_addr_offset = 0;
if (hw->mac.type == e1000_82571) {
/* Check for an alternate MAC address. An alternate MAC
* address can be setup by pre-boot software and must be
* treated like a permanent address and must override the
* actual permanent MAC address. */
ret_val = e1000_read_nvm(hw, NVM_ALT_MAC_ADDR_PTR, 1,
&mac_addr_offset);
if (ret_val) {
hw_dbg(hw, "NVM Read Error\n");
return ret_val;
}
if (mac_addr_offset == 0xFFFF)
mac_addr_offset = 0;
if (mac_addr_offset) {
if (hw->bus.func == E1000_FUNC_1)
mac_addr_offset += ETH_ALEN/sizeof(u16);
/* make sure we have a valid mac address here
* before using it */
ret_val = e1000_read_nvm(hw, mac_addr_offset, 1,
&nvm_data);
if (ret_val) {
hw_dbg(hw, "NVM Read Error\n");
return ret_val;
}
if (nvm_data & 0x0001)
mac_addr_offset = 0;
}
if (mac_addr_offset)
hw->dev_spec.e82571.alt_mac_addr_is_present = 1;
}
for (i = 0; i < ETH_ALEN; i += 2) {
offset = i >> 1;
offset = mac_addr_offset + (i >> 1);
ret_val = e1000_read_nvm(hw, offset, 1, &nvm_data);
if (ret_val) {
hw_dbg(hw, "NVM Read Error\n");
@ -2072,7 +2107,7 @@ s32 e1000e_read_mac_addr(struct e1000_hw *hw)
}
/* Flip last bit of mac address if we're on second port */
if (hw->bus.func == E1000_FUNC_1)
if (!mac_addr_offset && hw->bus.func == E1000_FUNC_1)
hw->mac.perm_addr[5] ^= 1;
for (i = 0; i < ETH_ALEN; i++)