From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Kirsher Subject: [net-next-2.6 PATCH] igb: add support for reporting 5GT/s during probe on PCIe Gen2 Date: Fri, 09 Apr 2010 12:52:47 -0700 Message-ID: <20100409195246.30654.40319.stgit@localhost.localdomain> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org, gospo@redhat.com, Alexander Duyck , Jeff Kirsher To: davem@davemloft.net Return-path: Received: from qmta05.westchester.pa.mail.comcast.net ([76.96.62.48]:39517 "EHLO qmta05.westchester.pa.mail.comcast.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756572Ab0DITxG (ORCPT ); Fri, 9 Apr 2010 15:53:06 -0400 Sender: netdev-owner@vger.kernel.org List-ID: From: Alexander Duyck 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 --- drivers/net/igb/e1000_defines.h | 3 +++ drivers/net/igb/e1000_mac.c | 19 ++++++++++++++++--- drivers/net/igb/igb_main.c | 1 + 3 files changed, 20 insertions(+), 3 deletions(-) diff --git a/drivers/net/igb/e1000_defines.h b/drivers/net/igb/e1000_defines.h index 31d24e0..8e440e8 100644 --- a/drivers/net/igb/e1000_defines.h +++ b/drivers/net/igb/e1000_defines.h @@ -615,6 +615,9 @@ #define PCIE_LINK_WIDTH_MASK 0x3F0 #define PCIE_LINK_WIDTH_SHIFT 4 +#define PCIE_LINK_SPEED_MASK 0x0F +#define PCIE_LINK_SPEED_2500 0x01 +#define PCIE_LINK_SPEED_5000 0x02 #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 be8d010..4371835 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) + if (ret_val) { bus->width = e1000_bus_width_unknown; - else + bus->speed = e1000_bus_speed_unknown; + } else { + switch (pcie_link_status & PCIE_LINK_SPEED_MASK) { + case PCIE_LINK_SPEED_2500: + bus->speed = e1000_bus_speed_2500; + break; + case PCIE_LINK_SPEED_5000: + 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); + } 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 876a49b..a3c79ad 100644 --- a/drivers/net/igb/igb_main.c +++ b/drivers/net/igb/igb_main.c @@ -1637,6 +1637,7 @@ 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" :