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Commit 5f28ef71 authored by Vadim Pasternak's avatar Vadim Pasternak Committed by David S. Miller
Browse files

mlxsw: reg: Add Management Temperature Bulk Register 



Add MTBR (Management Temperature Bulk Register), which is used for port
temperature reading in a bulk mode.

Signed-off-by: default avatarVadim Pasternak <vadimp@mellanox.com>
Reviewed-by: default avatarJiri Pirko <jiri@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d517ee7c

drivers/net/ethernet/mellanox/mlxsw/reg.h

+75 −0
Original line number Diff line number Diff line
@@ -8001,6 +8001,80 @@ static inline void mlxsw_reg_mtmp_unpack(char *payload, unsigned int *p_temp, 
		mlxsw_reg_mtmp_sensor_name_memcpy_from(payload, sensor_name);

}



/* MTBR - Management Temperature Bulk Register

 * -------------------------------------------

 * This register is used for bulk temperature reading.

 */

#define MLXSW_REG_MTBR_ID 0x900F

#define MLXSW_REG_MTBR_BASE_LEN 0x10 /* base length, without records */

#define MLXSW_REG_MTBR_REC_LEN 0x04 /* record length */

#define MLXSW_REG_MTBR_REC_MAX_COUNT 47 /* firmware limitation */

#define MLXSW_REG_MTBR_LEN (MLXSW_REG_MTBR_BASE_LEN +	\

			    MLXSW_REG_MTBR_REC_LEN *	\

			    MLXSW_REG_MTBR_REC_MAX_COUNT)



MLXSW_REG_DEFINE(mtbr, MLXSW_REG_MTBR_ID, MLXSW_REG_MTBR_LEN);



/* reg_mtbr_base_sensor_index

 * Base sensors index to access (0 - ASIC sensor, 1-63 - ambient sensors,

 * 64-127 are mapped to the SFP+/QSFP modules sequentially).

 * Access: Index

 */

MLXSW_ITEM32(reg, mtbr, base_sensor_index, 0x00, 0, 7);



/* reg_mtbr_num_rec

 * Request: Number of records to read

 * Response: Number of records read

 * See above description for more details.

 * Range 1..255

 * Access: RW

 */

MLXSW_ITEM32(reg, mtbr, num_rec, 0x04, 0, 8);



/* reg_mtbr_rec_max_temp

 * The highest measured temperature from the sensor.

 * When the bit mte is cleared, the field max_temperature is reserved.

 * Access: RO

 */

MLXSW_ITEM32_INDEXED(reg, mtbr, rec_max_temp, MLXSW_REG_MTBR_BASE_LEN, 16,

		     16, MLXSW_REG_MTBR_REC_LEN, 0x00, false);



/* reg_mtbr_rec_temp

 * Temperature reading from the sensor. Reading is in 0..125 Celsius

 * degrees units.

 * Access: RO

 */

MLXSW_ITEM32_INDEXED(reg, mtbr, rec_temp, MLXSW_REG_MTBR_BASE_LEN, 0, 16,

		     MLXSW_REG_MTBR_REC_LEN, 0x00, false);



static inline void mlxsw_reg_mtbr_pack(char *payload, u8 base_sensor_index,

				       u8 num_rec)

{

	MLXSW_REG_ZERO(mtbr, payload);

	mlxsw_reg_mtbr_base_sensor_index_set(payload, base_sensor_index);

	mlxsw_reg_mtbr_num_rec_set(payload, num_rec);

}



/* Error codes from temperatute reading */

enum mlxsw_reg_mtbr_temp_status {

	MLXSW_REG_MTBR_NO_CONN		= 0x8000,

	MLXSW_REG_MTBR_NO_TEMP_SENS	= 0x8001,

	MLXSW_REG_MTBR_INDEX_NA		= 0x8002,

	MLXSW_REG_MTBR_BAD_SENS_INFO	= 0x8003,

};



/* Base index for reading modules temperature */

#define MLXSW_REG_MTBR_BASE_MODULE_INDEX 64



static inline void mlxsw_reg_mtbr_temp_unpack(char *payload, int rec_ind,

					      u16 *p_temp, u16 *p_max_temp)

{

	if (p_temp)

		*p_temp = mlxsw_reg_mtbr_rec_temp_get(payload, rec_ind);

	if (p_max_temp)

		*p_max_temp = mlxsw_reg_mtbr_rec_max_temp_get(payload, rec_ind);

}



/* MCIA - Management Cable Info Access

 * -----------------------------------

 * MCIA register is used to access the SFP+ and QSFP connector's EPROM.
@@ -9779,6 +9853,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = { 
	MLXSW_REG(mfsl),

	MLXSW_REG(mtcap),

	MLXSW_REG(mtmp),

	MLXSW_REG(mtbr),

	MLXSW_REG(mcia),

	MLXSW_REG(mpat),

	MLXSW_REG(mpar),