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[net-next,V2,06/10] net/mlx5: Add support for enabling PTM PCI capability

Message ID 20240708080025.1593555-7-tariqt@nvidia.com (mailing list archive)
State Changes Requested
Delegated to: Netdev Maintainers
Headers show
Series mlx5 misc patches 2023-07-08 | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 816 this patch: 816
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 1 maintainers not CCed: linux-rdma@vger.kernel.org
netdev/build_clang success Errors and warnings before: 821 this patch: 821
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 821 this patch: 821
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 18 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest success net-next-2024-07-08--15-00 (tests: 694)

Commit Message

Tariq Toukan July 8, 2024, 8 a.m. UTC 
From: Carolina Jubran <cjubran@nvidia.com>

Since the kernel doesn't support enabling Precision Time Measurement
for an endpoint device, enable the PTM PCI capability in the driver.

Signed-off-by: Carolina Jubran <cjubran@nvidia.com>
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/main.c | 6 ++++++
 1 file changed, 6 insertions(+)
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Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 459a836a5d9c..31a43e0ee57f 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -923,6 +923,11 @@  static int mlx5_pci_init(struct mlx5_core_dev *dev, struct pci_dev *pdev,
 	}
 
 	mlx5_pci_vsc_init(dev);
+
+	err = pci_enable_ptm(pdev, NULL);
+	if (err)
+		mlx5_core_info(dev, "PTM is not supported by PCIe\n");
+
 	return 0;
 
 err_clr_master:
@@ -939,6 +944,7 @@  static void mlx5_pci_close(struct mlx5_core_dev *dev)
 	 * before removing the pci bars
 	 */
 	mlx5_drain_health_wq(dev);
+	pci_disable_ptm(dev->pdev);
 	iounmap(dev->iseg);
 	release_bar(dev->pdev);
 	mlx5_pci_disable_device(dev);