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Date: Mon, 21 Aug 2023 15:12:24 +0200
From: Petr Pavlu <petr.pavlu@...e.com>
To: tariqt@...dia.com,
yishaih@...dia.com,
leon@...nel.org
Cc: davem@...emloft.net,
edumazet@...gle.com,
kuba@...nel.org,
pabeni@...hat.com,
jgg@...pe.ca,
netdev@...r.kernel.org,
linux-rdma@...r.kernel.org,
linux-kernel@...r.kernel.org,
Petr Pavlu <petr.pavlu@...e.com>,
Leon Romanovsky <leonro@...dia.com>
Subject: [PATCH net-next v3 10/11] mlx4: Connect the infiniband part to the auxiliary bus
Use the auxiliary bus to perform device management of the infiniband
part of the mlx4 driver.
Signed-off-by: Petr Pavlu <petr.pavlu@...e.com>
Tested-by: Leon Romanovsky <leonro@...dia.com>
Reviewed-by: Leon Romanovsky <leonro@...dia.com>
Acked-by: Tariq Toukan <tariqt@...dia.com>
---
drivers/infiniband/hw/mlx4/main.c | 77 ++++++++++++++++-------
drivers/net/ethernet/mellanox/mlx4/intf.c | 13 ++++
2 files changed, 67 insertions(+), 23 deletions(-)
diff --git a/drivers/infiniband/hw/mlx4/main.c b/drivers/infiniband/hw/mlx4/main.c
index 6debee494a16..1f8d0d2c5f17 100644
--- a/drivers/infiniband/hw/mlx4/main.c
+++ b/drivers/infiniband/hw/mlx4/main.c
@@ -2609,8 +2609,11 @@ static const struct ib_device_ops mlx4_ib_dev_fs_ops = {
.destroy_flow = mlx4_ib_destroy_flow,
};
-static void *mlx4_ib_add(struct mlx4_dev *dev)
+static int mlx4_ib_probe(struct auxiliary_device *adev,
+ const struct auxiliary_device_id *id)
{
+ struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
+ struct mlx4_dev *dev = madev->mdev;
struct mlx4_ib_dev *ibdev;
int num_ports = 0;
int i, j;
@@ -2630,27 +2633,31 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
/* No point in registering a device with no ports... */
if (num_ports == 0)
- return NULL;
+ return -ENODEV;
ibdev = ib_alloc_device(mlx4_ib_dev, ib_dev);
if (!ibdev) {
dev_err(&dev->persist->pdev->dev,
"Device struct alloc failed\n");
- return NULL;
+ return -ENOMEM;
}
iboe = &ibdev->iboe;
- if (mlx4_pd_alloc(dev, &ibdev->priv_pdn))
+ err = mlx4_pd_alloc(dev, &ibdev->priv_pdn);
+ if (err)
goto err_dealloc;
- if (mlx4_uar_alloc(dev, &ibdev->priv_uar))
+ err = mlx4_uar_alloc(dev, &ibdev->priv_uar);
+ if (err)
goto err_pd;
ibdev->uar_map = ioremap((phys_addr_t) ibdev->priv_uar.pfn << PAGE_SHIFT,
PAGE_SIZE);
- if (!ibdev->uar_map)
+ if (!ibdev->uar_map) {
+ err = -ENOMEM;
goto err_uar;
+ }
MLX4_INIT_DOORBELL_LOCK(&ibdev->uar_lock);
ibdev->dev = dev;
@@ -2694,7 +2701,8 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
spin_lock_init(&iboe->lock);
- if (init_node_data(ibdev))
+ err = init_node_data(ibdev);
+ if (err)
goto err_map;
mlx4_init_sl2vl_tbl(ibdev);
@@ -2726,6 +2734,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
new_counter_index = kmalloc(sizeof(*new_counter_index),
GFP_KERNEL);
if (!new_counter_index) {
+ err = -ENOMEM;
if (allocated)
mlx4_counter_free(ibdev->dev, counter_index);
goto err_counter;
@@ -2743,8 +2752,10 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
new_counter_index =
kmalloc(sizeof(struct counter_index),
GFP_KERNEL);
- if (!new_counter_index)
+ if (!new_counter_index) {
+ err = -ENOMEM;
goto err_counter;
+ }
new_counter_index->index = counter_index;
new_counter_index->allocated = 0;
list_add_tail(&new_counter_index->list,
@@ -2773,8 +2784,10 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
ibdev->ib_uc_qpns_bitmap = bitmap_alloc(ibdev->steer_qpn_count,
GFP_KERNEL);
- if (!ibdev->ib_uc_qpns_bitmap)
+ if (!ibdev->ib_uc_qpns_bitmap) {
+ err = -ENOMEM;
goto err_steer_qp_release;
+ }
if (dev->caps.flags2 & MLX4_DEV_CAP_FLAG2_DMFS_IPOIB) {
bitmap_zero(ibdev->ib_uc_qpns_bitmap,
@@ -2794,17 +2807,21 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
for (j = 1; j <= ibdev->dev->caps.num_ports; j++)
atomic64_set(&iboe->mac[j - 1], ibdev->dev->caps.def_mac[j]);
- if (mlx4_ib_alloc_diag_counters(ibdev))
+ err = mlx4_ib_alloc_diag_counters(ibdev);
+ if (err)
goto err_steer_free_bitmap;
- if (ib_register_device(&ibdev->ib_dev, "mlx4_%d",
- &dev->persist->pdev->dev))
+ err = ib_register_device(&ibdev->ib_dev, "mlx4_%d",
+ &dev->persist->pdev->dev);
+ if (err)
goto err_diag_counters;
- if (mlx4_ib_mad_init(ibdev))
+ err = mlx4_ib_mad_init(ibdev);
+ if (err)
goto err_reg;
- if (mlx4_ib_init_sriov(ibdev))
+ err = mlx4_ib_init_sriov(ibdev);
+ if (err)
goto err_mad;
if (!iboe->nb.notifier_call) {
@@ -2844,7 +2861,8 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
err = mlx4_register_event_notifier(dev, &ibdev->mlx_nb);
WARN(err, "failed to register mlx4 event notifier (%d)", err);
- return ibdev;
+ auxiliary_set_drvdata(adev, ibdev);
+ return 0;
err_notif:
if (ibdev->iboe.nb.notifier_call) {
@@ -2888,7 +2906,7 @@ static void *mlx4_ib_add(struct mlx4_dev *dev)
err_dealloc:
ib_dealloc_device(&ibdev->ib_dev);
- return NULL;
+ return err;
}
int mlx4_ib_steer_qp_alloc(struct mlx4_ib_dev *dev, int count, int *qpn)
@@ -2955,9 +2973,11 @@ int mlx4_ib_steer_qp_reg(struct mlx4_ib_dev *mdev, struct mlx4_ib_qp *mqp,
return err;
}
-static void mlx4_ib_remove(struct mlx4_dev *dev, void *ibdev_ptr)
+static void mlx4_ib_remove(struct auxiliary_device *adev)
{
- struct mlx4_ib_dev *ibdev = ibdev_ptr;
+ struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
+ struct mlx4_dev *dev = madev->mdev;
+ struct mlx4_ib_dev *ibdev = auxiliary_get_drvdata(adev);
int p;
int i;
@@ -3303,9 +3323,20 @@ static int mlx4_ib_event(struct notifier_block *this, unsigned long event,
return NOTIFY_DONE;
}
-static struct mlx4_interface mlx4_ib_interface = {
- .add = mlx4_ib_add,
- .remove = mlx4_ib_remove,
+static const struct auxiliary_device_id mlx4_ib_id_table[] = {
+ { .name = MLX4_ADEV_NAME ".ib" },
+ {},
+};
+
+MODULE_DEVICE_TABLE(auxiliary, mlx4_ib_id_table);
+
+static struct mlx4_adrv mlx4_ib_adrv = {
+ .adrv = {
+ .name = "ib",
+ .probe = mlx4_ib_probe,
+ .remove = mlx4_ib_remove,
+ .id_table = mlx4_ib_id_table,
+ },
.protocol = MLX4_PROT_IB_IPV6,
.flags = MLX4_INTFF_BONDING
};
@@ -3330,7 +3361,7 @@ static int __init mlx4_ib_init(void)
if (err)
goto clean_cm;
- err = mlx4_register_interface(&mlx4_ib_interface);
+ err = mlx4_register_auxiliary_driver(&mlx4_ib_adrv);
if (err)
goto clean_mcg;
@@ -3352,7 +3383,7 @@ static int __init mlx4_ib_init(void)
static void __exit mlx4_ib_cleanup(void)
{
- mlx4_unregister_interface(&mlx4_ib_interface);
+ mlx4_unregister_auxiliary_driver(&mlx4_ib_adrv);
mlx4_ib_mcg_destroy();
mlx4_ib_cm_destroy();
mlx4_ib_qp_event_cleanup();
diff --git a/drivers/net/ethernet/mellanox/mlx4/intf.c b/drivers/net/ethernet/mellanox/mlx4/intf.c
index 95ff0ea435e2..7579031786ac 100644
--- a/drivers/net/ethernet/mellanox/mlx4/intf.c
+++ b/drivers/net/ethernet/mellanox/mlx4/intf.c
@@ -59,11 +59,24 @@ static bool is_eth_supported(struct mlx4_dev *dev)
return false;
}
+static bool is_ib_supported(struct mlx4_dev *dev)
+{
+ for (int port = 1; port <= dev->caps.num_ports; port++)
+ if (dev->caps.port_type[port] == MLX4_PORT_TYPE_IB)
+ return true;
+
+ if (dev->caps.flags & MLX4_DEV_CAP_FLAG_IBOE)
+ return true;
+
+ return false;
+}
+
static const struct mlx4_adev_device {
const char *suffix;
bool (*is_supported)(struct mlx4_dev *dev);
} mlx4_adev_devices[] = {
{ "eth", is_eth_supported },
+ { "ib", is_ib_supported },
};
int mlx4_adev_init(struct mlx4_dev *dev)
--
2.35.3
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