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 <linux/mlx5/eswitch.h>
7 #include "mlx5_core.h"
8 #include "dev.h"
9 #include "devlink.h"
10
mlx5_sf_dev_probe(struct auxiliary_device * adev,const struct auxiliary_device_id * id)11 static int mlx5_sf_dev_probe(struct auxiliary_device *adev, const struct auxiliary_device_id *id)
12 {
13 struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
14 struct mlx5_core_dev *mdev;
15 struct devlink *devlink;
16 int err;
17
18 devlink = mlx5_devlink_alloc(&adev->dev);
19 if (!devlink)
20 return -ENOMEM;
21
22 mdev = devlink_priv(devlink);
23 mdev->device = &adev->dev;
24 mdev->pdev = sf_dev->parent_mdev->pdev;
25 mdev->bar_addr = sf_dev->bar_base_addr;
26 mdev->iseg_base = sf_dev->bar_base_addr;
27 mdev->coredev_type = MLX5_COREDEV_SF;
28 mdev->priv.parent_mdev = sf_dev->parent_mdev;
29 mdev->priv.adev_idx = adev->id;
30 sf_dev->mdev = mdev;
31
32 /* Only local SFs do light probe */
33 if (MLX5_ESWITCH_MANAGER(sf_dev->parent_mdev))
34 mlx5_dev_set_lightweight(mdev);
35
36 err = mlx5_mdev_init(mdev, MLX5_SF_PROF);
37 if (err) {
38 mlx5_core_warn(mdev, "mlx5_mdev_init on err=%d\n", err);
39 goto mdev_err;
40 }
41
42 mdev->iseg = ioremap(mdev->iseg_base, sizeof(*mdev->iseg));
43 if (!mdev->iseg) {
44 mlx5_core_warn(mdev, "remap error\n");
45 err = -ENOMEM;
46 goto remap_err;
47 }
48
49 if (MLX5_ESWITCH_MANAGER(sf_dev->parent_mdev))
50 err = mlx5_init_one_light(mdev);
51 else
52 err = mlx5_init_one(mdev);
53 if (err) {
54 mlx5_core_warn(mdev, "mlx5_init_one err=%d\n", err);
55 goto init_one_err;
56 }
57 devlink_register(devlink);
58 return 0;
59
60 init_one_err:
61 iounmap(mdev->iseg);
62 remap_err:
63 mlx5_mdev_uninit(mdev);
64 mdev_err:
65 mlx5_devlink_free(devlink);
66 return err;
67 }
68
mlx5_sf_dev_remove(struct auxiliary_device * adev)69 static void mlx5_sf_dev_remove(struct auxiliary_device *adev)
70 {
71 struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
72 struct mlx5_core_dev *mdev = sf_dev->mdev;
73 struct devlink *devlink;
74
75 devlink = priv_to_devlink(mdev);
76 set_bit(MLX5_BREAK_FW_WAIT, &mdev->intf_state);
77 mlx5_drain_health_wq(mdev);
78 if (mlx5_dev_is_lightweight(mdev))
79 mlx5_uninit_one_light(mdev);
80 else
81 mlx5_uninit_one(mdev);
82 iounmap(mdev->iseg);
83 mlx5_mdev_uninit(mdev);
84 mlx5_devlink_free(devlink);
85 }
86
mlx5_sf_dev_shutdown(struct auxiliary_device * adev)87 static void mlx5_sf_dev_shutdown(struct auxiliary_device *adev)
88 {
89 struct mlx5_sf_dev *sf_dev = container_of(adev, struct mlx5_sf_dev, adev);
90 struct mlx5_core_dev *mdev = sf_dev->mdev;
91
92 set_bit(MLX5_BREAK_FW_WAIT, &mdev->intf_state);
93 mlx5_unload_one(mdev, false);
94 }
95
96 static const struct auxiliary_device_id mlx5_sf_dev_id_table[] = {
97 { .name = MLX5_ADEV_NAME "." MLX5_SF_DEV_ID_NAME, },
98 { },
99 };
100
101 MODULE_DEVICE_TABLE(auxiliary, mlx5_sf_dev_id_table);
102
103 static struct auxiliary_driver mlx5_sf_driver = {
104 .name = MLX5_SF_DEV_ID_NAME,
105 .probe = mlx5_sf_dev_probe,
106 .remove = mlx5_sf_dev_remove,
107 .shutdown = mlx5_sf_dev_shutdown,
108 .id_table = mlx5_sf_dev_id_table,
109 };
110
mlx5_sf_driver_register(void)111 int mlx5_sf_driver_register(void)
112 {
113 return auxiliary_driver_register(&mlx5_sf_driver);
114 }
115
mlx5_sf_driver_unregister(void)116 void mlx5_sf_driver_unregister(void)
117 {
118 auxiliary_driver_unregister(&mlx5_sf_driver);
119 }
120