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[BNX2]: Add link-down workaround on 5706 serdes.

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In some blade systems using the 5706 serdes, the hardware sometimes
does not properly generate link down interrupts.  We add a workaround
in the driver's timer to force a link-down when some PHY registers
report loss of SYNC.

The parallel detect logic is cleaned up slightly to better integrate
the workaround.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael Chan
2008-01-21 17:07:06 -08:00
committed by David S. Miller
parent 1097f5e921
commit b2fadeae13
2 changed files with 90 additions and 16 deletions
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10
drivers/net/bnx2.h
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@@ -6344,6 +6344,15 @@ struct l2_fhdr {
#define MII_BNX2_DSP_RW_PORT 0x15
#define MII_BNX2_DSP_ADDRESS 0x17
#define MII_BNX2_DSP_EXPAND_REG 0x0f00
#define MII_EXPAND_REG1 (MII_BNX2_DSP_EXPAND_REG | 1)
#define MII_EXPAND_REG1_RUDI_C 0x20
#define MII_EXPAND_SERDES_CTL (MII_BNX2_DSP_EXPAND_REG | 2)
#define MII_BNX2_MISC_SHADOW 0x1c
#define MISC_SHDW_AN_DBG 0x6800
#define MISC_SHDW_AN_DBG_NOSYNC 0x0002
#define MISC_SHDW_MODE_CTL 0x7c00
#define MISC_SHDW_MODE_CTL_SIG_DET 0x0010
#define MII_BNX2_BLK_ADDR 0x1f
#define MII_BNX2_BLK_ADDR_IEEE0 0x0000
@@ -6643,6 +6652,7 @@ struct bnx2 {
#define PHY_INT_MODE_LINK_READY_FLAG 0x200
#define PHY_DIS_EARLY_DAC_FLAG 0x400
#define REMOTE_PHY_CAP_FLAG 0x800
#define PHY_FORCED_DOWN_FLAG 0x1000
u32 mii_bmcr;
u32 mii_bmsr;