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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
/* Copyright (c) 2020 Mellanox Technologies Ltd */
#include <linux/mlx5/driver.h>
#include <linux/mlx5/device.h>
#include <linux/mlx5/eswitch.h>
#include "mlx5_core.h"
#include "dev.h"
#include "devlink.h"
static int mlx5_core_peer_devlink_set(struct mlx5_sf_dev *sf_dev, struct devlink *devlink)
{
struct mlx5_sf_peer_devlink_event_ctx event_ctx = {
.fn_id = sf_dev->fn_id,
.devlink = devlink,
};
int ret;
ret = mlx5_blocking_notifier_call_chain(sf_dev->parent_mdev,
MLX5_DRIVER_EVENT_SF_PEER_DEVLINK,
&event_ctx);
return ret == NOTIFY_OK ? event_ctx.err : 0;
}
static int mlx5_sf_dev_probe(struct auxiliary_device *adev, const struct auxiliary_device_id *id)
{
struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
struct mlx5_core_dev *mdev;
struct devlink *devlink;
int err;
devlink = mlx5_devlink_alloc(&adev->dev);
if (!devlink)
return -ENOMEM;
mdev = devlink_priv(devlink);
mdev->device = &adev->dev;
mdev->pdev = sf_dev->parent_mdev->pdev;
mdev->bar_addr = sf_dev->bar_base_addr;
mdev->iseg_base = sf_dev->bar_base_addr;
mdev->coredev_type = MLX5_COREDEV_SF;
mdev->priv.parent_mdev = sf_dev->parent_mdev;
mdev->priv.adev_idx = adev->id;
sf_dev->mdev = mdev;
/* Only local SFs do light probe */
if (MLX5_ESWITCH_MANAGER(sf_dev->parent_mdev))
mlx5_dev_set_lightweight(mdev);
err = mlx5_mdev_init(mdev, MLX5_SF_PROF);
if (err) {
mlx5_core_warn(mdev, "mlx5_mdev_init on err=%d\n", err);
goto mdev_err;
}
mdev->iseg = ioremap(mdev->iseg_base, sizeof(*mdev->iseg));
if (!mdev->iseg) {
mlx5_core_warn(mdev, "remap error\n");
err = -ENOMEM;
goto remap_err;
}
if (MLX5_ESWITCH_MANAGER(sf_dev->parent_mdev))
err = mlx5_init_one_light(mdev);
else
err = mlx5_init_one(mdev);
if (err) {
mlx5_core_warn(mdev, "mlx5_init_one err=%d\n", err);
goto init_one_err;
}
err = mlx5_core_peer_devlink_set(sf_dev, devlink);
if (err) {
mlx5_core_warn(mdev, "mlx5_core_peer_devlink_set err=%d\n", err);
goto peer_devlink_set_err;
}
devlink_register(devlink);
return 0;
peer_devlink_set_err:
if (mlx5_dev_is_lightweight(sf_dev->mdev))
mlx5_uninit_one_light(sf_dev->mdev);
else
mlx5_uninit_one(sf_dev->mdev);
init_one_err:
iounmap(mdev->iseg);
remap_err:
mlx5_mdev_uninit(mdev);
mdev_err:
mlx5_devlink_free(devlink);
return err;
}
static void mlx5_sf_dev_remove(struct auxiliary_device *adev)
{
struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
struct mlx5_core_dev *mdev = sf_dev->mdev;
struct devlink *devlink;
devlink = priv_to_devlink(mdev);
set_bit(MLX5_BREAK_FW_WAIT, &mdev->intf_state);
mlx5_drain_health_wq(mdev);
devlink_unregister(devlink);
if (mlx5_dev_is_lightweight(mdev))
mlx5_uninit_one_light(mdev);
else
mlx5_uninit_one(mdev);
iounmap(mdev->iseg);
mlx5_mdev_uninit(mdev);
mlx5_devlink_free(devlink);
}
static void mlx5_sf_dev_shutdown(struct auxiliary_device *adev)
{
struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
struct mlx5_core_dev *mdev = sf_dev->mdev;
set_bit(MLX5_BREAK_FW_WAIT, &mdev->intf_state);
mlx5_unload_one(mdev, false);
}
static const struct auxiliary_device_id mlx5_sf_dev_id_table[] = {
{ .name = MLX5_ADEV_NAME "." MLX5_SF_DEV_ID_NAME, },
{ },
};
MODULE_DEVICE_TABLE(auxiliary, mlx5_sf_dev_id_table);
static struct auxiliary_driver mlx5_sf_driver = {
.name = MLX5_SF_DEV_ID_NAME,
.probe = mlx5_sf_dev_probe,
.remove = mlx5_sf_dev_remove,
.shutdown = mlx5_sf_dev_shutdown,
.id_table = mlx5_sf_dev_id_table,
};
int mlx5_sf_driver_register(void)
{
return auxiliary_driver_register(&mlx5_sf_driver);
}
void mlx5_sf_driver_unregister(void)
{
auxiliary_driver_unregister(&mlx5_sf_driver);
}
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