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Date: Sun, 13 Aug 2023 16:51:25 +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 v2 08/10] mlx4: Connect the ethernet part to the auxiliary bus
Use the auxiliary bus to perform device management of the ethernet 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/net/ethernet/mellanox/mlx4/en_main.c | 65 ++++++++++++++------
drivers/net/ethernet/mellanox/mlx4/intf.c | 13 +++-
2 files changed, 58 insertions(+), 20 deletions(-)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_main.c b/drivers/net/ethernet/mellanox/mlx4/en_main.c
index 263f9274927b..8a7e3aabbcfd 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_main.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_main.c
@@ -222,9 +222,11 @@ static int mlx4_en_event(struct notifier_block *this, unsigned long event,
return NOTIFY_DONE;
}
-static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr)
+static void mlx4_en_remove(struct auxiliary_device *adev)
{
- struct mlx4_en_dev *mdev = endev_ptr;
+ struct mlx4_adev *madev = container_of(adev, struct mlx4_adev, adev);
+ struct mlx4_dev *dev = madev->mdev;
+ struct mlx4_en_dev *mdev = auxiliary_get_drvdata(adev);
int i;
mlx4_unregister_event_notifier(dev, &mdev->mlx_nb);
@@ -247,27 +249,36 @@ static void mlx4_en_remove(struct mlx4_dev *dev, void *endev_ptr)
kfree(mdev);
}
-static void *mlx4_en_add(struct mlx4_dev *dev)
+static int mlx4_en_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_en_dev *mdev;
int err, i;
printk_once(KERN_INFO "%s", mlx4_en_version);
mdev = kzalloc(sizeof(*mdev), GFP_KERNEL);
- if (!mdev)
+ if (!mdev) {
+ err = -ENOMEM;
goto err_free_res;
+ }
- if (mlx4_pd_alloc(dev, &mdev->priv_pdn))
+ err = mlx4_pd_alloc(dev, &mdev->priv_pdn);
+ if (err)
goto err_free_dev;
- if (mlx4_uar_alloc(dev, &mdev->priv_uar))
+ err = mlx4_uar_alloc(dev, &mdev->priv_uar);
+ if (err)
goto err_pd;
mdev->uar_map = ioremap((phys_addr_t) mdev->priv_uar.pfn << PAGE_SHIFT,
PAGE_SIZE);
- if (!mdev->uar_map)
+ if (!mdev->uar_map) {
+ err = -ENOMEM;
goto err_uar;
+ }
spin_lock_init(&mdev->uar_lock);
mdev->dev = dev;
@@ -279,13 +290,15 @@ static void *mlx4_en_add(struct mlx4_dev *dev)
if (!mdev->LSO_support)
mlx4_warn(mdev, "LSO not supported, please upgrade to later FW version to enable LSO\n");
- if (mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
- MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ,
- 0, 0, &mdev->mr)) {
+ err = mlx4_mr_alloc(mdev->dev, mdev->priv_pdn, 0, ~0ull,
+ MLX4_PERM_LOCAL_WRITE | MLX4_PERM_LOCAL_READ, 0, 0,
+ &mdev->mr);
+ if (err) {
mlx4_err(mdev, "Failed allocating memory region\n");
goto err_map;
}
- if (mlx4_mr_enable(mdev->dev, &mdev->mr)) {
+ err = mlx4_mr_enable(mdev->dev, &mdev->mr);
+ if (err) {
mlx4_err(mdev, "Failed enabling memory region\n");
goto err_mr;
}
@@ -305,8 +318,10 @@ static void *mlx4_en_add(struct mlx4_dev *dev)
* Note: we cannot use the shared workqueue because of deadlocks caused
* by the rtnl lock */
mdev->workqueue = create_singlethread_workqueue("mlx4_en");
- if (!mdev->workqueue)
+ if (!mdev->workqueue) {
+ err = -ENOMEM;
goto err_mr;
+ }
/* At this stage all non-port specific tasks are complete:
* mark the card state as up */
@@ -334,7 +349,8 @@ static void *mlx4_en_add(struct mlx4_dev *dev)
mlx4_err(mdev, "Failed to create netdev notifier\n");
}
- return mdev;
+ auxiliary_set_drvdata(adev, mdev);
+ return 0;
err_mr:
(void) mlx4_mr_free(dev, &mdev->mr);
@@ -348,12 +364,23 @@ static void *mlx4_en_add(struct mlx4_dev *dev)
err_free_dev:
kfree(mdev);
err_free_res:
- return NULL;
+ return err;
}
-static struct mlx4_interface mlx4_en_interface = {
- .add = mlx4_en_add,
- .remove = mlx4_en_remove,
+static const struct auxiliary_device_id mlx4_en_id_table[] = {
+ { .name = MLX4_ADEV_NAME ".eth" },
+ {},
+};
+
+MODULE_DEVICE_TABLE(auxiliary, mlx4_en_id_table);
+
+static struct mlx4_adrv mlx4_en_adrv = {
+ .adrv = {
+ .name = "eth",
+ .probe = mlx4_en_probe,
+ .remove = mlx4_en_remove,
+ .id_table = mlx4_en_id_table,
+ },
.protocol = MLX4_PROT_ETH,
};
@@ -383,12 +410,12 @@ static int __init mlx4_en_init(void)
mlx4_en_verify_params();
mlx4_en_init_ptys2ethtool_map();
- return mlx4_register_interface(&mlx4_en_interface);
+ return mlx4_register_auxiliary_driver(&mlx4_en_adrv);
}
static void __exit mlx4_en_cleanup(void)
{
- mlx4_unregister_interface(&mlx4_en_interface);
+ mlx4_unregister_auxiliary_driver(&mlx4_en_adrv);
}
module_init(mlx4_en_init);
diff --git a/drivers/net/ethernet/mellanox/mlx4/intf.c b/drivers/net/ethernet/mellanox/mlx4/intf.c
index 4b1e18e4a682..0a27820ece2e 100644
--- a/drivers/net/ethernet/mellanox/mlx4/intf.c
+++ b/drivers/net/ethernet/mellanox/mlx4/intf.c
@@ -50,10 +50,21 @@ static LIST_HEAD(dev_list);
static DEFINE_MUTEX(intf_mutex);
static DEFINE_IDA(mlx4_adev_ida);
+static bool is_eth_supported(struct mlx4_dev *dev)
+{
+ for (int port = 1; port <= dev->caps.num_ports; port++)
+ if (dev->caps.port_type[port] == MLX4_PORT_TYPE_ETH)
+ return true;
+
+ return false;
+}
+
static const struct mlx4_adev_device {
const char *suffix;
bool (*is_supported)(struct mlx4_dev *dev);
-} mlx4_adev_devices[1] = {};
+} mlx4_adev_devices[] = {
+ { "eth", is_eth_supported },
+};
int mlx4_adev_init(struct mlx4_dev *dev)
{
--
2.35.3
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