net/ethtool/cmis.h

   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  */
  15 struct ethtool_cmis_cdb {
  16         u8      cmis_rev;
  17         u8      read_write_len_ext;
  18         u16     max_completion_time;
  19 };
  20
  21 enum 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  */
  45 struct 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  * @read_write_len_ext: Allowable additional number of byte octets to the LPL
  67  *                      in a READ or a WRITE commands.
  68  * @msleep_pre_rpl: Waiting time before checking reply in msec.
  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  */
  73 struct ethtool_cmis_cdb_cmd_args {
  74         struct ethtool_cmis_cdb_request req;
  75         u16                             max_duration;
  76         u8                              read_write_len_ext;
  77         u8                              msleep_pre_rpl;
  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  */
  88 struct 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  */
  98 struct ethtool_cmis_cdb_rpl {
  99         struct ethtool_cmis_cdb_rpl_hdr hdr;
 100         u8 payload[ETHTOOL_CMIS_CDB_LPL_MAX_PL_LENGTH];
 101 };
 102
 103 u32 ethtool_cmis_get_max_lpl_size(u8 num_of_byte_octs);
 104 u32 ethtool_cmis_get_max_epl_size(u8 num_of_byte_octs);
 105
 106 void ethtool_cmis_cdb_compose_args(struct ethtool_cmis_cdb_cmd_args *args,
 107                                    enum ethtool_cmis_cdb_cmd_id cmd, u8 *lpl,
 108                                    u8 lpl_len, u8 *epl, u16 epl_len,
 109                                    u16 max_duration, u8 read_write_len_ext,
 110                                    u16 msleep_pre_rpl, u8 rpl_exp_len,
 111                                    u8 flags);
 112
 113 void ethtool_cmis_cdb_check_completion_flag(u8 cmis_rev, u8 *flags);
 114
 115 void ethtool_cmis_page_init(struct ethtool_module_eeprom *page_data,
 116                             u8 page, u32 offset, u32 length);
 117
 118 struct ethtool_cmis_cdb *
 119 ethtool_cmis_cdb_init(struct net_device *dev,
 120                       const struct ethtool_module_fw_flash_params *params,
 121                       struct ethnl_module_fw_flash_ntf_params *ntf_params);
 122 void ethtool_cmis_cdb_fini(struct ethtool_cmis_cdb *cdb);
 123
 124 int ethtool_cmis_wait_for_cond(struct net_device *dev, u8 flags, u8 flag,
 125                                u16 max_duration, u32 offset,
 126                                bool (*cond_success)(u8), bool (*cond_fail)(u8), u8 *state);
 127
 128 int ethtool_cmis_cdb_execute_cmd(struct net_device *dev,
 129                                  struct ethtool_cmis_cdb_cmd_args *args);