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path: root/drivers/net/mlx4/main.c
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Diffstat (limited to 'drivers/net/mlx4/main.c')
-rw-r--r--drivers/net/mlx4/main.c20
1 files changed, 17 insertions, 3 deletions
diff --git a/drivers/net/mlx4/main.c b/drivers/net/mlx4/main.c
index 2765a3ce9c24..517ca34f5b37 100644
--- a/drivers/net/mlx4/main.c
+++ b/drivers/net/mlx4/main.c
@@ -969,13 +969,15 @@ static void mlx4_enable_msi_x(struct mlx4_dev *dev)
{
struct mlx4_priv *priv = mlx4_priv(dev);
struct msix_entry *entries;
- int nreq;
+ int nreq = min_t(int, dev->caps.num_ports *
+ min_t(int, num_online_cpus() + 1, MAX_MSIX_P_PORT)
+ + MSIX_LEGACY_SZ, MAX_MSIX);
int err;
int i;
if (msi_x) {
nreq = min_t(int, dev->caps.num_eqs - dev->caps.reserved_eqs,
- num_possible_cpus() + 1);
+ nreq);
entries = kcalloc(nreq, sizeof *entries, GFP_KERNEL);
if (!entries)
goto no_msi;
@@ -998,7 +1000,15 @@ static void mlx4_enable_msi_x(struct mlx4_dev *dev)
goto no_msi;
}
- dev->caps.num_comp_vectors = nreq - 1;
+ if (nreq <
+ MSIX_LEGACY_SZ + dev->caps.num_ports * MIN_MSIX_P_PORT) {
+ /*Working in legacy mode , all EQ's shared*/
+ dev->caps.comp_pool = 0;
+ dev->caps.num_comp_vectors = nreq - 1;
+ } else {
+ dev->caps.comp_pool = nreq - MSIX_LEGACY_SZ;
+ dev->caps.num_comp_vectors = MSIX_LEGACY_SZ - 1;
+ }
for (i = 0; i < nreq; ++i)
priv->eq_table.eq[i].irq = entries[i].vector;
@@ -1010,6 +1020,7 @@ static void mlx4_enable_msi_x(struct mlx4_dev *dev)
no_msi:
dev->caps.num_comp_vectors = 1;
+ dev->caps.comp_pool = 0;
for (i = 0; i < 2; ++i)
priv->eq_table.eq[i].irq = dev->pdev->irq;
@@ -1151,6 +1162,9 @@ static int __mlx4_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
if (err)
goto err_close;
+ priv->msix_ctl.pool_bm = 0;
+ spin_lock_init(&priv->msix_ctl.pool_lock);
+
mlx4_enable_msi_x(dev);
err = mlx4_setup_hca(dev);
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