1 /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */
2 /* Copyright (c) 2017-2019 Mellanox Technologies. All rights reserved */
3 
4 #ifndef _MLXFW_H
5 #define _MLXFW_H
6 
7 #include <linux/firmware.h>
8 #include <linux/netlink.h>
9 #include <linux/device.h>
10 #include <net/devlink.h>
11 
12 struct mlxfw_dev {
13 	const struct mlxfw_dev_ops *ops;
14 	const char *psid;
15 	u16 psid_size;
16 	struct devlink *devlink;
17 };
18 
19 static inline
mlxfw_dev_dev(struct mlxfw_dev * mlxfw_dev)20 struct device *mlxfw_dev_dev(struct mlxfw_dev *mlxfw_dev)
21 {
22 	return devlink_to_dev(mlxfw_dev->devlink);
23 }
24 
25 #define MLXFW_PRFX "mlxfw: "
26 
27 #define mlxfw_info(mlxfw_dev, fmt, ...) \
28 	dev_info(mlxfw_dev_dev(mlxfw_dev), MLXFW_PRFX fmt, ## __VA_ARGS__)
29 #define mlxfw_err(mlxfw_dev, fmt, ...) \
30 	dev_err(mlxfw_dev_dev(mlxfw_dev), MLXFW_PRFX fmt, ## __VA_ARGS__)
31 #define mlxfw_dbg(mlxfw_dev, fmt, ...) \
32 	dev_dbg(mlxfw_dev_dev(mlxfw_dev), MLXFW_PRFX fmt, ## __VA_ARGS__)
33 
34 enum mlxfw_fsm_state {
35 	MLXFW_FSM_STATE_IDLE,
36 	MLXFW_FSM_STATE_LOCKED,
37 	MLXFW_FSM_STATE_INITIALIZE,
38 	MLXFW_FSM_STATE_DOWNLOAD,
39 	MLXFW_FSM_STATE_VERIFY,
40 	MLXFW_FSM_STATE_APPLY,
41 	MLXFW_FSM_STATE_ACTIVATE,
42 };
43 
44 enum mlxfw_fsm_state_err {
45 	MLXFW_FSM_STATE_ERR_OK,
46 	MLXFW_FSM_STATE_ERR_ERROR,
47 	MLXFW_FSM_STATE_ERR_REJECTED_DIGEST_ERR,
48 	MLXFW_FSM_STATE_ERR_REJECTED_NOT_APPLICABLE,
49 	MLXFW_FSM_STATE_ERR_REJECTED_UNKNOWN_KEY,
50 	MLXFW_FSM_STATE_ERR_REJECTED_AUTH_FAILED,
51 	MLXFW_FSM_STATE_ERR_REJECTED_UNSIGNED,
52 	MLXFW_FSM_STATE_ERR_REJECTED_KEY_NOT_APPLICABLE,
53 	MLXFW_FSM_STATE_ERR_REJECTED_BAD_FORMAT,
54 	MLXFW_FSM_STATE_ERR_BLOCKED_PENDING_RESET,
55 	MLXFW_FSM_STATE_ERR_MAX,
56 };
57 
58 enum mlxfw_fsm_reactivate_status {
59 	MLXFW_FSM_REACTIVATE_STATUS_OK,
60 	MLXFW_FSM_REACTIVATE_STATUS_BUSY,
61 	MLXFW_FSM_REACTIVATE_STATUS_PROHIBITED_FW_VER_ERR,
62 	MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_COPY_FAILED,
63 	MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_ERASE_FAILED,
64 	MLXFW_FSM_REACTIVATE_STATUS_FIRST_PAGE_RESTORE_FAILED,
65 	MLXFW_FSM_REACTIVATE_STATUS_CANDIDATE_FW_DEACTIVATION_FAILED,
66 	MLXFW_FSM_REACTIVATE_STATUS_FW_ALREADY_ACTIVATED,
67 	MLXFW_FSM_REACTIVATE_STATUS_ERR_DEVICE_RESET_REQUIRED,
68 	MLXFW_FSM_REACTIVATE_STATUS_ERR_FW_PROGRAMMING_NEEDED,
69 	MLXFW_FSM_REACTIVATE_STATUS_MAX,
70 };
71 
72 struct mlxfw_dev_ops {
73 	int (*component_query)(struct mlxfw_dev *mlxfw_dev, u16 component_index,
74 			       u32 *p_max_size, u8 *p_align_bits,
75 			       u16 *p_max_write_size);
76 
77 	int (*fsm_lock)(struct mlxfw_dev *mlxfw_dev, u32 *fwhandle);
78 
79 	int (*fsm_component_update)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
80 				    u16 component_index, u32 component_size);
81 
82 	int (*fsm_block_download)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
83 				  u8 *data, u16 size, u32 offset);
84 
85 	int (*fsm_component_verify)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
86 				    u16 component_index);
87 
88 	int (*fsm_activate)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);
89 
90 	int (*fsm_reactivate)(struct mlxfw_dev *mlxfw_dev, u8 *status);
91 
92 	int (*fsm_query_state)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle,
93 			       enum mlxfw_fsm_state *fsm_state,
94 			       enum mlxfw_fsm_state_err *fsm_state_err);
95 
96 	void (*fsm_cancel)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);
97 
98 	void (*fsm_release)(struct mlxfw_dev *mlxfw_dev, u32 fwhandle);
99 };
100 
101 #if IS_REACHABLE(CONFIG_MLXFW)
102 int mlxfw_firmware_flash(struct mlxfw_dev *mlxfw_dev,
103 			 const struct firmware *firmware,
104 			 struct netlink_ext_ack *extack);
105 #else
106 static inline
mlxfw_firmware_flash(struct mlxfw_dev * mlxfw_dev,const struct firmware * firmware,struct netlink_ext_ack * extack)107 int mlxfw_firmware_flash(struct mlxfw_dev *mlxfw_dev,
108 			 const struct firmware *firmware,
109 			 struct netlink_ext_ack *extack)
110 {
111 	return -EOPNOTSUPP;
112 }
113 #endif
114 
115 #endif
116