From 5eb6f3c70fcc0fb19b9087863e6e29f96a76f3bd Mon Sep 17 00:00:00 2001 From: Bruce Allan Date: Wed, 2 Dec 2009 17:02:43 +0000 Subject: [PATCH] e1000e: refactor PHY ID detection workaround The workaround that detects the correct PHY ID when an initial read of the PHY ID registers returns an invalid one should retry up to ten times with a small delay between attempts using a single PHY address and then repeat using the remaining possible PHY addresses. Do this instead of trying each possible PHY address repeating that up to 100 times. Signed-off-by: Bruce Allan Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/e1000e/hw.h | 2 +- drivers/net/e1000e/phy.c | 26 ++++++++++++++++---------- 2 files changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/net/e1000e/hw.h b/drivers/net/e1000e/hw.h index 41609d5561ba..a7d08dae79c4 100644 --- a/drivers/net/e1000e/hw.h +++ b/drivers/net/e1000e/hw.h @@ -219,7 +219,7 @@ enum e1e_registers { E1000_HICR = 0x08F00, /* Host Interface Control */ }; -/* RSS registers */ +#define E1000_MAX_PHY_ADDR 4 /* IGP01E1000 Specific Registers */ #define IGP01E1000_PHY_PORT_CONFIG 0x10 /* Port Config */ diff --git a/drivers/net/e1000e/phy.c b/drivers/net/e1000e/phy.c index 0c69649af069..67a718862e70 100644 --- a/drivers/net/e1000e/phy.c +++ b/drivers/net/e1000e/phy.c @@ -2197,28 +2197,34 @@ enum e1000_phy_type e1000e_get_phy_type_from_id(u32 phy_id) s32 e1000e_determine_phy_address(struct e1000_hw *hw) { s32 ret_val = -E1000_ERR_PHY_TYPE; - u32 phy_addr= 0; - u32 i = 0; + u32 phy_addr = 0; + u32 i; enum e1000_phy_type phy_type = e1000_phy_unknown; - do { - for (phy_addr = 0; phy_addr < 4; phy_addr++) { - hw->phy.addr = phy_addr; + hw->phy.id = phy_type; + + for (phy_addr = 0; phy_addr < E1000_MAX_PHY_ADDR; phy_addr++) { + hw->phy.addr = phy_addr; + i = 0; + + do { e1000e_get_phy_id(hw); phy_type = e1000e_get_phy_type_from_id(hw->phy.id); - /* + /* * If phy_type is valid, break - we found our * PHY address */ if (phy_type != e1000_phy_unknown) { ret_val = 0; - break; + goto out; } - } - i++; - } while ((ret_val != 0) && (i < 100)); + msleep(1); + i++; + } while (i < 10); + } +out: return ret_val; } -- 2.20.1