From: Leon Romanovsky <leo...@nvidia.com>
Implement ability to configure MSI-X for the SR-IOV VFs.
Signed-off-by: Leon Romanovsky <leo...@nvidia.com>
---
.../net/ethernet/mellanox/mlx5/core/main.c | 1 +
.../ethernet/mellanox/mlx5/core/mlx5_core.h | 1 +
.../net/ethernet/mellanox/mlx5/core/pci_irq.c | 4 +-
.../net/ethernet/mellanox/mlx5/core/sriov.c | 38 +++++++++++++++++++
4 files changed, 42 insertions(+), 2 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/main.c
b/drivers/net/ethernet/mellanox/mlx5/core/main.c
index 8269cfbfc69d..334b3b5077c5 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/main.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/main.c
@@ -1647,6 +1647,7 @@ static struct pci_driver mlx5_core_driver = {
.shutdown = shutdown,
.err_handler = &mlx5_err_handler,
.sriov_configure = mlx5_core_sriov_configure,
+ .sriov_set_msix_vec_count = mlx5_core_sriov_set_msix_vec_count,
};
static void mlx5_core_verify_params(void)
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
index 5babb4434a87..8a2523d2d43a 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
+++ b/drivers/net/ethernet/mellanox/mlx5/core/mlx5_core.h
@@ -138,6 +138,7 @@ void mlx5_sriov_cleanup(struct mlx5_core_dev *dev);
int mlx5_sriov_attach(struct mlx5_core_dev *dev);
void mlx5_sriov_detach(struct mlx5_core_dev *dev);
int mlx5_core_sriov_configure(struct pci_dev *dev, int num_vfs);
+int mlx5_core_sriov_set_msix_vec_count(struct pci_dev *vf, int msix_vec_count);
int mlx5_core_enable_hca(struct mlx5_core_dev *dev, u16 func_id);
int mlx5_core_disable_hca(struct mlx5_core_dev *dev, u16 func_id);
int mlx5_create_scheduling_element_cmd(struct mlx5_core_dev *dev, u8 hierarchy,
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
index 135078e8dd55..65a761346385 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/pci_irq.c
@@ -59,7 +59,7 @@ int mlx5_get_default_msix_vec_count(struct mlx5_core_dev
*dev, int num_vfs)
{
int num_vf_msix, min_msix, max_msix;
- num_vf_msix = MLX5_CAP_GEN(dev, num_total_dynamic_vf_msix);
+ num_vf_msix = MLX5_CAP_GEN_MAX(dev, num_total_dynamic_vf_msix);
if (!num_vf_msix)
return 0;
@@ -83,7 +83,7 @@ int mlx5_set_msix_vec_count(struct mlx5_core_dev *dev, int
function_id,
void *hca_cap, *cap;
int ret;
- num_vf_msix = MLX5_CAP_GEN(dev, num_total_dynamic_vf_msix);
+ num_vf_msix = MLX5_CAP_GEN_MAX(dev, num_total_dynamic_vf_msix);
if (!num_vf_msix)
return 0;
diff --git a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
index c59efb1e7a26..adc7c8945b9d 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/sriov.c
@@ -145,6 +145,7 @@ mlx5_device_disable_sriov(struct mlx5_core_dev *dev, int
num_vfs, bool clear_vf)
static int mlx5_sriov_enable(struct pci_dev *pdev, int num_vfs)
{
struct mlx5_core_dev *dev = pci_get_drvdata(pdev);
+ u32 num_vf_msix;
int err;
err = mlx5_device_enable_sriov(dev, num_vfs);
@@ -153,6 +154,8 @@ static int mlx5_sriov_enable(struct pci_dev *pdev, int
num_vfs)
return err;
}
+ num_vf_msix = MLX5_CAP_GEN_MAX(dev, num_total_dynamic_vf_msix);
+ pci_sriov_set_vf_total_msix(pdev, num_vf_msix);
err = pci_enable_sriov(pdev, num_vfs);
if (err) {
mlx5_core_warn(dev, "pci_enable_sriov failed : %d\n", err);
@@ -188,6 +191,41 @@ int mlx5_core_sriov_configure(struct pci_dev *pdev, int
num_vfs)
return err ? err : num_vfs;
}
+int mlx5_core_sriov_set_msix_vec_count(struct pci_dev *vf, int msix_vec_count)
+{
+ struct pci_dev *pf = pci_physfn(vf);
+ struct mlx5_core_sriov *sriov;
+ struct mlx5_core_dev *dev;
+ int num_vf_msix, id;
+
+ dev = pci_get_drvdata(pf);
+ num_vf_msix = MLX5_CAP_GEN_MAX(dev, num_total_dynamic_vf_msix);
+ if (!num_vf_msix)
+ return -EOPNOTSUPP;
+
+ if (!msix_vec_count)
+ msix_vec_count =
+ mlx5_get_default_msix_vec_count(dev, pci_num_vf(pf));
+
+ sriov = &dev->priv.sriov;
+
+ /* Reversed translation of PCI VF function number to the internal
+ * function_id, which exists in the name of virtfn symlink.
+ */
+ for (id = 0; id < pci_num_vf(pf); id++) {
+ if (!sriov->vfs_ctx[id].enabled)
+ continue;
+
+ if (vf->devfn == pci_iov_virtfn_devfn(pf, id))
+ break;
+ }
+
+ if (id == pci_num_vf(pf) || !sriov->vfs_ctx[id].enabled)
+ return -EINVAL;
+
+ return mlx5_set_msix_vec_count(dev, id + 1, msix_vec_count);
+}
+
int mlx5_sriov_attach(struct mlx5_core_dev *dev)
{
if (!mlx5_core_is_pf(dev) || !pci_num_vf(dev->pdev))
--
2.29.2
