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1/* SPDX-License-Identifier: GPL-2.0-only */
2
3#define ETHTOOL_CMIS_CDB_LPL_MAX_PL_LENGTH 120
4#define ETHTOOL_CMIS_CDB_EPL_MAX_PL_LENGTH 2048
5#define ETHTOOL_CMIS_CDB_CMD_PAGE 0x9F
6#define ETHTOOL_CMIS_CDB_PAGE_I2C_ADDR 0x50
7
8/**
9 * struct ethtool_cmis_cdb - CDB commands parameters
10 * @cmis_rev: CMIS revision major.
11 * @read_write_len_ext: Allowable additional number of byte octets to the LPL
12 * in a READ or a WRITE CDB commands.
13 * @max_completion_time: Maximum CDB command completion time in msec.
14 */
15struct ethtool_cmis_cdb {
16 u8 cmis_rev;
17 u8 read_write_len_ext;
18 u16 max_completion_time;
19};
20
21enum ethtool_cmis_cdb_cmd_id {
22 ETHTOOL_CMIS_CDB_CMD_QUERY_STATUS = 0x0000,
23 ETHTOOL_CMIS_CDB_CMD_MODULE_FEATURES = 0x0040,
24 ETHTOOL_CMIS_CDB_CMD_FW_MANAGMENT_FEATURES = 0x0041,
25 ETHTOOL_CMIS_CDB_CMD_START_FW_DOWNLOAD = 0x0101,
26 ETHTOOL_CMIS_CDB_CMD_WRITE_FW_BLOCK_LPL = 0x0103,
27 ETHTOOL_CMIS_CDB_CMD_WRITE_FW_BLOCK_EPL = 0x0104,
28 ETHTOOL_CMIS_CDB_CMD_COMPLETE_FW_DOWNLOAD = 0x0107,
29 ETHTOOL_CMIS_CDB_CMD_RUN_FW_IMAGE = 0x0109,
30 ETHTOOL_CMIS_CDB_CMD_COMMIT_FW_IMAGE = 0x010A,
31};
32
33/**
34 * struct ethtool_cmis_cdb_request - CDB commands request fields as decribed in
35 * the CMIS standard
36 * @id: Command ID.
37 * @epl_len: EPL memory length.
38 * @lpl_len: LPL memory length.
39 * @chk_code: Check code for the previous field and the payload.
40 * @resv1: Added to match the CMIS standard request continuity.
41 * @resv2: Added to match the CMIS standard request continuity.
42 * @payload: Payload for the CDB commands.
43 * @epl: Extended payload for the CDB commands.
44 */
45struct ethtool_cmis_cdb_request {
46 __be16 id;
47 struct_group(body,
48 __be16 epl_len;
49 u8 lpl_len;
50 u8 chk_code;
51 u8 resv1;
52 u8 resv2;
53 u8 payload[ETHTOOL_CMIS_CDB_LPL_MAX_PL_LENGTH];
54 );
55 u8 *epl; /* Everything above this field checksummed. */
56};
57
58#define CDB_F_COMPLETION_VALID BIT(0)
59#define CDB_F_STATUS_VALID BIT(1)
60#define CDB_F_MODULE_STATE_VALID BIT(2)
61
62/**
63 * struct ethtool_cmis_cdb_cmd_args - CDB commands execution arguments
64 * @req: CDB command fields as described in the CMIS standard.
65 * @max_duration: Maximum duration time for command completion in msec.
66 * @msleep_pre_rpl: Waiting time before checking reply in msec.
67 * @read_write_len_ext: Allowable additional number of byte octets to the LPL
68 * in a READ or a WRITE commands.
69 * @rpl_exp_len: Expected reply length in bytes.
70 * @flags: Validation flags for CDB commands.
71 * @err_msg: Error message to be sent to user space.
72 */
73struct ethtool_cmis_cdb_cmd_args {
74 struct ethtool_cmis_cdb_request req;
75 u16 max_duration;
76 u16 msleep_pre_rpl;
77 u8 read_write_len_ext;
78 u8 rpl_exp_len;
79 u8 flags;
80 char *err_msg;
81};
82
83/**
84 * struct ethtool_cmis_cdb_rpl_hdr - CDB commands reply header arguments
85 * @rpl_len: Reply length.
86 * @rpl_chk_code: Reply check code.
87 */
88struct ethtool_cmis_cdb_rpl_hdr {
89 u8 rpl_len;
90 u8 rpl_chk_code;
91};
92
93/**
94 * struct ethtool_cmis_cdb_rpl - CDB commands reply arguments
95 * @hdr: CDB commands reply header arguments.
96 * @payload: Payload for the CDB commands reply.
97 */
98struct ethtool_cmis_cdb_rpl {
99 struct ethtool_cmis_cdb_rpl_hdr hdr;
100 u8 payload[ETHTOOL_CMIS_CDB_LPL_MAX_PL_LENGTH];
101};
102
103u32 ethtool_cmis_get_max_lpl_size(u8 num_of_byte_octs);
104
105void ethtool_cmis_cdb_compose_args(struct ethtool_cmis_cdb_cmd_args *args,
106 enum ethtool_cmis_cdb_cmd_id cmd, u8 *lpl,
107 u8 lpl_len, u8 *epl, u16 epl_len,
108 u16 max_duration, u8 read_write_len_ext,
109 u16 msleep_pre_rpl, u8 rpl_exp_len,
110 u8 flags);
111
112void ethtool_cmis_cdb_check_completion_flag(u8 cmis_rev, u8 *flags);
113
114void ethtool_cmis_page_init(struct ethtool_module_eeprom *page_data,
115 u8 page, u32 offset, u32 length);
116
117struct ethtool_cmis_cdb *
118ethtool_cmis_cdb_init(struct net_device *dev,
119 const struct ethtool_module_fw_flash_params *params,
120 struct ethnl_module_fw_flash_ntf_params *ntf_params);
121void ethtool_cmis_cdb_fini(struct ethtool_cmis_cdb *cdb);
122
123int ethtool_cmis_wait_for_cond(struct net_device *dev, u8 flags, u8 flag,
124 u16 max_duration, u32 offset,
125 bool (*cond_success)(u8), bool (*cond_fail)(u8), u8 *state);
126
127int ethtool_cmis_cdb_execute_cmd(struct net_device *dev,
128 struct ethtool_cmis_cdb_cmd_args *args);