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{NET,IB}/mlx4: Add rmap support to mlx4_assign_eq

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Enable callers of mlx4_assign_eq to supply a pointer to cpu_rmap.
If supplied, the assigned IRQ is tracked using rmap infrastructure.

Signed-off-by: Amir Vadai <amirv@mellanox.com>
Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amir Vadai 2012-07-18 22:33:51 +00:00 • committed by David S. Miller
parent 122733a189
commit d9236c3f10
4 changed files with 18 additions and 4 deletions
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3
drivers/infiniband/hw/mlx4/main.c
View file

@ -1159,7 +1159,8 @@ static void mlx4_ib_alloc_eqs(struct mlx4_dev *dev, struct mlx4_ib_dev *ibdev)
sprintf(name, "mlx4-ib-%d-%d@%s", sprintf(name, "mlx4-ib-%d-%d@%s",
i, j, dev->pdev->bus->name); i, j, dev->pdev->bus->name);
/* Set IRQ for specific name (per ring) */ /* Set IRQ for specific name (per ring) */
if (mlx4_assign_eq(dev, name, &ibdev->eq_table[eq])) { if (mlx4_assign_eq(dev, name, NULL,
&ibdev->eq_table[eq])) {
/* Use legacy (same as mlx4_en driver) */ /* Use legacy (same as mlx4_en driver) */
pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq); pr_warn("Can't allocate EQ %d; reverting to legacy\n", eq);
ibdev->eq_table[eq] = ibdev->eq_table[eq] =

3
drivers/net/ethernet/mellanox/mlx4/en_cq.c
View file

@ -91,7 +91,8 @@ int mlx4_en_activate_cq(struct mlx4_en_priv *priv, struct mlx4_en_cq *cq,
sprintf(name, "%s-%d", priv->dev->name, sprintf(name, "%s-%d", priv->dev->name,
cq->ring); cq->ring);
/* Set IRQ for specific name (per ring) */ /* Set IRQ for specific name (per ring) */
if (mlx4_assign_eq(mdev->dev, name, &cq->vector)) { if (mlx4_assign_eq(mdev->dev, name, NULL,
&cq->vector)) {
cq->vector = (cq->ring + 1 + priv->port) cq->vector = (cq->ring + 1 + priv->port)
% mdev->dev->caps.num_comp_vectors; % mdev->dev->caps.num_comp_vectors;
mlx4_warn(mdev, "Failed Assigning an EQ to " mlx4_warn(mdev, "Failed Assigning an EQ to "

12
drivers/net/ethernet/mellanox/mlx4/eq.c
View file

@ -39,6 +39,7 @@
#include <linux/dma-mapping.h> #include <linux/dma-mapping.h>
#include <linux/mlx4/cmd.h> #include <linux/mlx4/cmd.h>
#include <linux/cpu_rmap.h>
#include "mlx4.h" #include "mlx4.h"
#include "fw.h" #include "fw.h"
@ -1060,7 +1061,8 @@ int mlx4_test_interrupts(struct mlx4_dev *dev)
} }
EXPORT_SYMBOL(mlx4_test_interrupts); EXPORT_SYMBOL(mlx4_test_interrupts);
int mlx4_assign_eq(struct mlx4_dev *dev, char* name, int * vector) int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap,
int *vector)
{ {
struct mlx4_priv *priv = mlx4_priv(dev); struct mlx4_priv *priv = mlx4_priv(dev);
@ -1074,6 +1076,14 @@ int mlx4_assign_eq(struct mlx4_dev *dev, char* name, int * vector)
snprintf(priv->eq_table.irq_names + snprintf(priv->eq_table.irq_names +
vec * MLX4_IRQNAME_SIZE, vec * MLX4_IRQNAME_SIZE,
MLX4_IRQNAME_SIZE, "%s", name); MLX4_IRQNAME_SIZE, "%s", name);
#ifdef CONFIG_RFS_ACCEL
if (rmap) {
err = irq_cpu_rmap_add(rmap,
priv->eq_table.eq[vec].irq);
if (err)
mlx4_warn(dev, "Failed adding irq rmap\n");
}
#endif
err = request_irq(priv->eq_table.eq[vec].irq, err = request_irq(priv->eq_table.eq[vec].irq,
mlx4_msi_x_interrupt, 0, mlx4_msi_x_interrupt, 0,
&priv->eq_table.irq_names[vec<<5], &priv->eq_table.irq_names[vec<<5],

4
include/linux/mlx4/device.h
View file

@ -36,6 +36,7 @@
#include <linux/pci.h> #include <linux/pci.h>
#include <linux/completion.h> #include <linux/completion.h>
#include <linux/radix-tree.h> #include <linux/radix-tree.h>
#include <linux/cpu_rmap.h>
#include <linux/atomic.h> #include <linux/atomic.h>
@ -784,7 +785,8 @@ void mlx4_fmr_unmap(struct mlx4_dev *dev, struct mlx4_fmr *fmr,
int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr); int mlx4_fmr_free(struct mlx4_dev *dev, struct mlx4_fmr *fmr);
int mlx4_SYNC_TPT(struct mlx4_dev *dev); int mlx4_SYNC_TPT(struct mlx4_dev *dev);
int mlx4_test_interrupts(struct mlx4_dev *dev); int mlx4_test_interrupts(struct mlx4_dev *dev);
int mlx4_assign_eq(struct mlx4_dev *dev, char* name , int* vector); int mlx4_assign_eq(struct mlx4_dev *dev, char *name, struct cpu_rmap *rmap,
int *vector);
void mlx4_release_eq(struct mlx4_dev *dev, int vec); void mlx4_release_eq(struct mlx4_dev *dev, int vec);
int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port); int mlx4_wol_read(struct mlx4_dev *dev, u64 *config, int port);