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Message-Id: <1193166811.14801.71.camel@dual.billh>
Date: Tue, 23 Oct 2007 13:13:31 -0600
From: Bill Hayes <bill.hayes@...com>
To: jeff@...zik.org, auke-jan.h.kok@...el.com, netdev@...r.kernel.org,
andy@...yhouse.net
Subject: [PATCH] e1000e: alternate MAC address support
Port alternate MAC address support from the sourceforge
e1000 driver to the upstream e1000e driver.
Signed-off-by: Bill Hayes <bill.hayes@...com>
---
drivers/net/e1000e/82571.c | 4 ++++
drivers/net/e1000e/lib.c | 39 +++++++++++++++++++++++++++++++++++++--
drivers/net/e1000e/hw.h | 1 +
drivers/net/e1000e/defines.h | 1 +
4 files changed, 43 insertions(+), 2 deletions(-)
diff --git a/drivers/net/e1000e/82571.c b/drivers/net/e1000e/82571.c
index cf70522..4bef111 100644
--- a/drivers/net/e1000e/82571.c
+++ b/drivers/net/e1000e/82571.c
@@ -752,6 +752,10 @@ static s32 e1000_reset_hw_82571(struct e1000_hw *hw)
ew32(IMC, 0xffffffff);
icr = er32(ICR);
+ if (hw->mac.type == e1000_82571 &&
+ hw->dev_spec.e82571.alt_mac_addr_is_present)
+ e1000e_set_laa_state_82571(hw, TRUE);
+
return 0;
}
diff --git a/drivers/net/e1000e/lib.c b/drivers/net/e1000e/lib.c
index 0bdeca3..16f35fa 100644
--- a/drivers/net/e1000e/lib.c
+++ b/drivers/net/e1000e/lib.c
@@ -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++)
diff --git a/drivers/net/e1000e/hw.h b/drivers/net/e1000e/hw.h
index 6451578..1bb2052 100644
--- a/drivers/net/e1000e/hw.h
+++ b/drivers/net/e1000e/hw.h
@@ -816,6 +816,7 @@ struct e1000_bus_info {
struct e1000_dev_spec_82571 {
bool laa_is_present;
+ bool alt_mac_addr_is_present;
};
struct e1000_shadow_ram {
diff --git a/drivers/net/e1000e/defines.h b/drivers/net/e1000e/defines.h
index b32ed45..f2175ea 100644
--- a/drivers/net/e1000e/defines.h
+++ b/drivers/net/e1000e/defines.h
@@ -557,6 +557,7 @@
#define NVM_INIT_3GIO_3 0x001A
#define NVM_INIT_CONTROL3_PORT_A 0x0024
#define NVM_CFG 0x0012
+#define NVM_ALT_MAC_ADDR_PTR 0x0037
#define NVM_CHECKSUM_REG 0x003F
#define E1000_NVM_CFG_DONE_PORT_0 0x40000 /* MNG config cycle done */
-
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