1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 /* Copyright (c) 2020 Mellanox Technologies Ltd */ 3 4 #include <linux/mlx5/driver.h> 5 #include <linux/mlx5/device.h> 6 #include "mlx5_core.h" 7 #include "dev.h" 8 #include "devlink.h" 9 10 static int mlx5_sf_dev_probe(struct auxiliary_device *adev, const struct auxiliary_device_id *id) 11 { 12 struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev); 13 struct mlx5_core_dev *mdev; 14 struct devlink *devlink; 15 int err; 16 17 devlink = mlx5_devlink_alloc(); 18 if (!devlink) 19 return -ENOMEM; 20 21 mdev = devlink_priv(devlink); 22 mdev->device = &adev->dev; 23 mdev->pdev = sf_dev->parent_mdev->pdev; 24 mdev->bar_addr = sf_dev->bar_base_addr; 25 mdev->iseg_base = sf_dev->bar_base_addr; 26 mdev->coredev_type = MLX5_COREDEV_SF; 27 mdev->priv.parent_mdev = sf_dev->parent_mdev; 28 mdev->priv.adev_idx = adev->id; 29 sf_dev->mdev = mdev; 30 31 err = mlx5_mdev_init(mdev, MLX5_DEFAULT_PROF); 32 if (err) { 33 mlx5_core_warn(mdev, "mlx5_mdev_init on err=%d\n", err); 34 goto mdev_err; 35 } 36 37 mdev->iseg = ioremap(mdev->iseg_base, sizeof(*mdev->iseg)); 38 if (!mdev->iseg) { 39 mlx5_core_warn(mdev, "remap error\n"); 40 err = -ENOMEM; 41 goto remap_err; 42 } 43 44 err = mlx5_load_one(mdev, true); 45 if (err) { 46 mlx5_core_warn(mdev, "mlx5_load_one err=%d\n", err); 47 goto load_one_err; 48 } 49 return 0; 50 51 load_one_err: 52 iounmap(mdev->iseg); 53 remap_err: 54 mlx5_mdev_uninit(mdev); 55 mdev_err: 56 mlx5_devlink_free(devlink); 57 return err; 58 } 59 60 static void mlx5_sf_dev_remove(struct auxiliary_device *adev) 61 { 62 struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev); 63 struct devlink *devlink; 64 65 devlink = priv_to_devlink(sf_dev->mdev); 66 mlx5_unload_one(sf_dev->mdev, true); 67 iounmap(sf_dev->mdev->iseg); 68 mlx5_mdev_uninit(sf_dev->mdev); 69 mlx5_devlink_free(devlink); 70 } 71 72 static void mlx5_sf_dev_shutdown(struct auxiliary_device *adev) 73 { 74 struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev); 75 76 mlx5_unload_one(sf_dev->mdev, false); 77 } 78 79 static const struct auxiliary_device_id mlx5_sf_dev_id_table[] = { 80 { .name = MLX5_ADEV_NAME "." MLX5_SF_DEV_ID_NAME, }, 81 { }, 82 }; 83 84 MODULE_DEVICE_TABLE(auxiliary, mlx5_sf_dev_id_table); 85 86 static struct auxiliary_driver mlx5_sf_driver = { 87 .name = MLX5_SF_DEV_ID_NAME, 88 .probe = mlx5_sf_dev_probe, 89 .remove = mlx5_sf_dev_remove, 90 .shutdown = mlx5_sf_dev_shutdown, 91 .id_table = mlx5_sf_dev_id_table, 92 }; 93 94 int mlx5_sf_driver_register(void) 95 { 96 return auxiliary_driver_register(&mlx5_sf_driver); 97 } 98 99 void mlx5_sf_driver_unregister(void) 100 { 101 auxiliary_driver_unregister(&mlx5_sf_driver); 102 } 103