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Date: Tue, 19 Jul 2022 08:48:43 +0200 From: Jiri Pirko <jiri@...nulli.us> To: netdev@...r.kernel.org Cc: davem@...emloft.net, kuba@...nel.org, idosch@...dia.com, petrm@...dia.com, pabeni@...hat.com, edumazet@...gle.com, mlxsw@...dia.com, saeedm@...dia.com, snelson@...sando.io Subject: [patch net-next v2 08/12] mlxsw: reg: Add Management DownStream Device Tunneling Register From: Jiri Pirko <jiri@...dia.com> The MDDT register allows to deliver query and request messages (PRM registers, commands) to a DownStream device. Signed-off-by: Jiri Pirko <jiri@...dia.com> Signed-off-by: Ido Schimmel <idosch@...dia.com> --- drivers/net/ethernet/mellanox/mlxsw/reg.h | 90 +++++++++++++++++++++++ 1 file changed, 90 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlxsw/reg.h b/drivers/net/ethernet/mellanox/mlxsw/reg.h index 76caf06b17d6..e45df09df757 100644 --- a/drivers/net/ethernet/mellanox/mlxsw/reg.h +++ b/drivers/net/ethernet/mellanox/mlxsw/reg.h @@ -11276,6 +11276,95 @@ mlxsw_reg_mbct_unpack(const char *payload, u8 *p_slot_index, *p_fsm_state = mlxsw_reg_mbct_fsm_state_get(payload); } +/* MDDT - Management DownStream Device Tunneling Register + * ------------------------------------------------------ + * This register allows to deliver query and request messages (PRM registers, + * commands) to a DownStream device. + */ +#define MLXSW_REG_MDDT_ID 0x9160 +#define MLXSW_REG_MDDT_LEN 0x110 + +MLXSW_REG_DEFINE(mddt, MLXSW_REG_MDDT_ID, MLXSW_REG_MDDT_LEN); + +/* reg_mddt_slot_index + * Slot index. + * Access: Index + */ +MLXSW_ITEM32(reg, mddt, slot_index, 0x00, 8, 4); + +/* reg_mddt_device_index + * Device index. + * Access: Index + */ +MLXSW_ITEM32(reg, mddt, device_index, 0x00, 0, 8); + +/* reg_mddt_read_size + * Read size in D-Words. + * Access: OP + */ +MLXSW_ITEM32(reg, mddt, read_size, 0x04, 24, 8); + +/* reg_mddt_write_size + * Write size in D-Words. + * Access: OP + */ +MLXSW_ITEM32(reg, mddt, write_size, 0x04, 16, 8); + +enum mlxsw_reg_mddt_status { + MLXSW_REG_MDDT_STATUS_OK, +}; + +/* reg_mddt_status + * Return code of the Downstream Device to the register that was sent. + * Access: RO + */ +MLXSW_ITEM32(reg, mddt, status, 0x0C, 24, 8); + +enum mlxsw_reg_mddt_method { + MLXSW_REG_MDDT_METHOD_QUERY, + MLXSW_REG_MDDT_METHOD_WRITE, +}; + +/* reg_mddt_method + * Access: OP + */ +MLXSW_ITEM32(reg, mddt, method, 0x0C, 22, 2); + +/* reg_mddt_register_id + * Access: Index + */ +MLXSW_ITEM32(reg, mddt, register_id, 0x0C, 0, 16); + +#define MLXSW_REG_MDDT_PAYLOAD_OFFSET 0x0C +#define MLXSW_REG_MDDT_PRM_REGISTER_HEADER_LEN 4 + +static inline char *mlxsw_reg_mddt_inner_payload(char *payload) +{ + return payload + MLXSW_REG_MDDT_PAYLOAD_OFFSET + + MLXSW_REG_MDDT_PRM_REGISTER_HEADER_LEN; +} + +static inline void mlxsw_reg_mddt_pack(char *payload, u8 slot_index, + u8 device_index, + enum mlxsw_reg_mddt_method method, + const struct mlxsw_reg_info *reg, + char **inner_payload) +{ + int len = reg->len + MLXSW_REG_MDDT_PRM_REGISTER_HEADER_LEN; + + if (WARN_ON(len + MLXSW_REG_MDDT_PAYLOAD_OFFSET > MLXSW_REG_MDDT_LEN)) + len = MLXSW_REG_MDDT_LEN - MLXSW_REG_MDDT_PAYLOAD_OFFSET; + + MLXSW_REG_ZERO(mddt, payload); + mlxsw_reg_mddt_slot_index_set(payload, slot_index); + mlxsw_reg_mddt_device_index_set(payload, device_index); + mlxsw_reg_mddt_method_set(payload, method); + mlxsw_reg_mddt_register_id_set(payload, reg->id); + mlxsw_reg_mddt_read_size_set(payload, len / 4); + mlxsw_reg_mddt_write_size_set(payload, len / 4); + *inner_payload = mlxsw_reg_mddt_inner_payload(payload); +} + /* MDDQ - Management DownStream Device Query Register * -------------------------------------------------- * This register allows to query the DownStream device properties. The desired @@ -12854,6 +12943,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = { MLXSW_REG(mfgd), MLXSW_REG(mgpir), MLXSW_REG(mbct), + MLXSW_REG(mddt), MLXSW_REG(mddq), MLXSW_REG(mddc), MLXSW_REG(mfde), -- 2.35.3
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