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e1000e: only perform ESB2 MDIC workaround on certain configurations

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A workaround added for all ESB2 devices (adds a delay for all MDIC accesses
which resolves an issue with the MDIC ready bit being set prematurely) is
applicable only to devices in which the MAC-PHY interconnect is not
operating in a certain mode with in-band MDIO.  Check the control register
for the operating mode and enable the workaround accordingly.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Bruce Allan
2009-12-08 07:28:20 +00:00
committed by David S. Miller
parent 0781895067
commit 3421eecdee
2 changed files with 71 additions and 35 deletions
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5
drivers/net/e1000e/hw.h
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@@ -900,6 +900,10 @@ struct e1000_dev_spec_82571 {
u32 smb_counter;
};
struct e1000_dev_spec_80003es2lan {
bool mdic_wa_enable;
};
struct e1000_shadow_ram {
u16 value;
bool modified;
@@ -928,6 +932,7 @@ struct e1000_hw {
union {
struct e1000_dev_spec_82571 e82571;
struct e1000_dev_spec_80003es2lan e80003es2lan;
struct e1000_dev_spec_ich8lan ich8lan;
} dev_spec;
};