From: Vinicius Costa Gomes <vinicius.gomes@intel.com> To: intel-wired-lan@lists.osuosl.org Cc: Vinicius Costa Gomes <vinicius.gomes@intel.com>, sasha.neftin@intel.com, anthony.l.nguyen@intel.com, linux-pci@vger.kernel.org, bhelgaas@google.com, netdev@vger.kernel.org, mlichvar@redhat.com, richardcochran@gmail.com, hch@infradead.org, helgaas@kernel.org Subject: [PATCH next-queue v5 3/4] igc: Enable PCIe PTM Date: Fri, 4 Jun 2021 17:23:55 -0700 [thread overview] Message-ID: <20210605002356.3996853-4-vinicius.gomes@intel.com> (raw) In-Reply-To: <20210605002356.3996853-1-vinicius.gomes@intel.com> Enables PCIe PTM (Precision Time Measurement) support in the igc driver. Notifies the PCI devices that PCIe PTM should be enabled. PCIe PTM is similar protocol to PTP (Precision Time Protocol) running in the PCIe fabric, it allows devices to report time measurements from their internal clocks and the correlation with the PCIe root clock. The i225 NIC exposes some registers that expose those time measurements, those registers will be used, in later patches, to implement the PTP_SYS_OFFSET_PRECISE ioctl(). Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> --- drivers/net/ethernet/intel/igc/igc_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index a05e6d8ec660..f23d0303e53b 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -12,6 +12,8 @@ #include <net/pkt_sched.h> #include <linux/bpf_trace.h> #include <net/xdp_sock_drv.h> +#include <linux/pci.h> + #include <net/ipv6.h> #include "igc.h" @@ -5864,6 +5866,10 @@ static int igc_probe(struct pci_dev *pdev, pci_enable_pcie_error_reporting(pdev); + err = pci_enable_ptm(pdev, NULL); + if (err < 0) + dev_err(&pdev->dev, "PTM not supported\n"); + pci_set_master(pdev); err = -ENOMEM; -- 2.31.1
WARNING: multiple messages have this Message-ID (diff)
From: Vinicius Costa Gomes <vinicius.gomes@intel.com> To: intel-wired-lan@osuosl.org Subject: [Intel-wired-lan] [PATCH next-queue v5 3/4] igc: Enable PCIe PTM Date: Fri, 4 Jun 2021 17:23:55 -0700 [thread overview] Message-ID: <20210605002356.3996853-4-vinicius.gomes@intel.com> (raw) In-Reply-To: <20210605002356.3996853-1-vinicius.gomes@intel.com> Enables PCIe PTM (Precision Time Measurement) support in the igc driver. Notifies the PCI devices that PCIe PTM should be enabled. PCIe PTM is similar protocol to PTP (Precision Time Protocol) running in the PCIe fabric, it allows devices to report time measurements from their internal clocks and the correlation with the PCIe root clock. The i225 NIC exposes some registers that expose those time measurements, those registers will be used, in later patches, to implement the PTP_SYS_OFFSET_PRECISE ioctl(). Signed-off-by: Vinicius Costa Gomes <vinicius.gomes@intel.com> --- drivers/net/ethernet/intel/igc/igc_main.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/net/ethernet/intel/igc/igc_main.c b/drivers/net/ethernet/intel/igc/igc_main.c index a05e6d8ec660..f23d0303e53b 100644 --- a/drivers/net/ethernet/intel/igc/igc_main.c +++ b/drivers/net/ethernet/intel/igc/igc_main.c @@ -12,6 +12,8 @@ #include <net/pkt_sched.h> #include <linux/bpf_trace.h> #include <net/xdp_sock_drv.h> +#include <linux/pci.h> + #include <net/ipv6.h> #include "igc.h" @@ -5864,6 +5866,10 @@ static int igc_probe(struct pci_dev *pdev, pci_enable_pcie_error_reporting(pdev); + err = pci_enable_ptm(pdev, NULL); + if (err < 0) + dev_err(&pdev->dev, "PTM not supported\n"); + pci_set_master(pdev); err = -ENOMEM; -- 2.31.1
next prev parent reply other threads:[~2021-06-05 0:24 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-06-05 0:23 [PATCH next-queue v5 0/4] igc: Add support for PCIe PTM Vinicius Costa Gomes 2021-06-05 0:23 ` [Intel-wired-lan] " Vinicius Costa Gomes 2021-06-05 0:23 ` [PATCH next-queue v5 1/4] Revert "PCI: Make pci_enable_ptm() private" Vinicius Costa Gomes 2021-06-05 0:23 ` [Intel-wired-lan] " Vinicius Costa Gomes 2021-06-05 0:23 ` [PATCH next-queue v5 2/4] PCI: Add pcie_ptm_enabled() Vinicius Costa Gomes 2021-06-05 0:23 ` [Intel-wired-lan] " Vinicius Costa Gomes 2021-06-05 0:23 ` Vinicius Costa Gomes [this message] 2021-06-05 0:23 ` [Intel-wired-lan] [PATCH next-queue v5 3/4] igc: Enable PCIe PTM Vinicius Costa Gomes 2021-06-05 6:42 ` Paul Menzel 2021-06-05 6:42 ` Paul Menzel 2021-06-08 19:02 ` Vinicius Costa Gomes 2021-06-08 19:02 ` Vinicius Costa Gomes 2021-06-09 6:24 ` Paul Menzel 2021-06-09 6:24 ` Paul Menzel 2021-06-09 20:08 ` Vinicius Costa Gomes 2021-06-09 20:08 ` Vinicius Costa Gomes 2021-06-09 21:26 ` Paul Menzel 2021-06-09 21:26 ` Paul Menzel 2021-06-09 23:07 ` Vinicius Costa Gomes 2021-06-09 23:07 ` Vinicius Costa Gomes 2021-06-09 23:20 ` Bjorn Helgaas 2021-06-09 23:20 ` Bjorn Helgaas 2021-06-10 0:04 ` Vinicius Costa Gomes 2021-06-10 0:04 ` Vinicius Costa Gomes 2021-06-05 0:23 ` [PATCH next-queue v5 4/4] igc: Add support for PTP getcrosststamp() Vinicius Costa Gomes 2021-06-05 0:23 ` [Intel-wired-lan] " Vinicius Costa Gomes 2021-06-05 6:36 ` Paul Menzel 2021-06-05 6:36 ` Paul Menzel 2021-06-08 22:02 ` Vinicius Costa Gomes 2021-06-08 22:02 ` Vinicius Costa Gomes
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