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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add more comprehensive information to show PCIe link speed and link width to the console. Signed-off-by: Srinath Mannam --- drivers/pci/controller/pcie-iproc.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/drivers/pci/controller/pcie-iproc.c b/drivers/pci/controller/pcie-iproc.c index e7f0d58..ed41357 100644 --- a/drivers/pci/controller/pcie-iproc.c +++ b/drivers/pci/controller/pcie-iproc.c @@ -823,6 +823,8 @@ static int iproc_pcie_check_link(struct iproc_pcie *pcie) #define PCI_TARGET_LINK_SPEED_MASK 0xf #define PCI_TARGET_LINK_SPEED_GEN2 0x2 #define PCI_TARGET_LINK_SPEED_GEN1 0x1 +#define PCI_TARGET_LINK_WIDTH_MASK 0x3f +#define PCI_TARGET_LINK_WIDTH_OFFSET 0x4 iproc_pci_raw_config_read32(pcie, 0, IPROC_PCI_EXP_CAP + PCI_EXP_LNKCTL2, 4, &link_ctrl); @@ -843,7 +845,14 @@ static int iproc_pcie_check_link(struct iproc_pcie *pcie) } } - dev_info(dev, "link: %s\n", link_is_active ? "UP" : "DOWN"); + if (link_is_active) { + dev_info(dev, "link UP @ Speed Gen-%d and width-x%d\n", + link_status & PCI_TARGET_LINK_SPEED_MASK, + (link_status >> PCI_TARGET_LINK_WIDTH_OFFSET) & + PCI_TARGET_LINK_WIDTH_MASK); + } else { + dev_info(dev, "link DOWN\n"); + } return link_is_active ? 0 : -ENODEV; } -- 2.7.4 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel