From ff846f52935e6c8dfb0c97df7c2c1bf777454684 Mon Sep 17 00:00:00 2001 From: Alexander Duyck Date: Tue, 27 Apr 2010 01:02:40 +0000 Subject: igb: add support for reporting 5GT/s during probe on PCIe Gen2 This change corrects the fact that we were not reporting Gen2 link speeds when we were in fact connected at Gen2 rates. Signed-off-by: Alexander Duyck Signed-off-by: Jeff Kirsher Signed-off-by: David S. Miller --- drivers/net/igb/e1000_defines.h | 4 ---- drivers/net/igb/e1000_mac.c | 27 ++++++++++++++++++++------- drivers/net/igb/igb_main.c | 1 + 3 files changed, 21 insertions(+), 11 deletions(-) (limited to 'drivers/net/igb') diff --git a/drivers/net/igb/e1000_defines.h b/drivers/net/igb/e1000_defines.h index 31d24e0e76de..24d9be64342f 100644 --- a/drivers/net/igb/e1000_defines.h +++ b/drivers/net/igb/e1000_defines.h @@ -610,11 +610,7 @@ #define IGP_LED3_MODE 0x07000000 /* PCI/PCI-X/PCI-EX Config space */ -#define PCIE_LINK_STATUS 0x12 #define PCIE_DEVICE_CONTROL2 0x28 - -#define PCIE_LINK_WIDTH_MASK 0x3F0 -#define PCIE_LINK_WIDTH_SHIFT 4 #define PCIE_DEVICE_CONTROL2_16ms 0x0005 #define PHY_REVISION_MASK 0xFFFFFFF0 diff --git a/drivers/net/igb/e1000_mac.c b/drivers/net/igb/e1000_mac.c index be8d010e4021..90c5e01e9235 100644 --- a/drivers/net/igb/e1000_mac.c +++ b/drivers/net/igb/e1000_mac.c @@ -53,17 +53,30 @@ s32 igb_get_bus_info_pcie(struct e1000_hw *hw) u16 pcie_link_status; bus->type = e1000_bus_type_pci_express; - bus->speed = e1000_bus_speed_2500; ret_val = igb_read_pcie_cap_reg(hw, - PCIE_LINK_STATUS, - &pcie_link_status); - if (ret_val) + PCI_EXP_LNKSTA, + &pcie_link_status); + if (ret_val) { bus->width = e1000_bus_width_unknown; - else + bus->speed = e1000_bus_speed_unknown; + } else { + switch (pcie_link_status & PCI_EXP_LNKSTA_CLS) { + case PCI_EXP_LNKSTA_CLS_2_5GB: + bus->speed = e1000_bus_speed_2500; + break; + case PCI_EXP_LNKSTA_CLS_5_0GB: + bus->speed = e1000_bus_speed_5000; + break; + default: + bus->speed = e1000_bus_speed_unknown; + break; + } + bus->width = (enum e1000_bus_width)((pcie_link_status & - PCIE_LINK_WIDTH_MASK) >> - PCIE_LINK_WIDTH_SHIFT); + PCI_EXP_LNKSTA_NLW) >> + PCI_EXP_LNKSTA_NLW_SHIFT); + } reg = rd32(E1000_STATUS); bus->func = (reg & E1000_STATUS_FUNC_MASK) >> E1000_STATUS_FUNC_SHIFT; diff --git a/drivers/net/igb/igb_main.c b/drivers/net/igb/igb_main.c index a14303a0ad7b..919e36386675 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -1638,6 +1638,7 @@ static int __devinit igb_probe(struct pci_dev *pdev, dev_info(&pdev->dev, "%s: (PCIe:%s:%s) %pM\n", netdev->name, ((hw->bus.speed == e1000_bus_speed_2500) ? "2.5Gb/s" : + (hw->bus.speed == e1000_bus_speed_5000) ? "5.0Gb/s" : "unknown"), ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : (hw->bus.width == e1000_bus_width_pcie_x2) ? "Width x2" : -- cgit v1.2.3