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mlxsw: reg: Extend PMMP register with new slot number field

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Extend PMMP (Port Module Memory Map Properties Register) with new
field specifying the slot number. The purpose of this field is to
enable overriding the cable/module memory map advertisement.

For non-modular systems the 'module' number uniquely identifies the
transceiver location. For modular systems the transceivers are
identified by two indexes:
- 'slot_index', specifying the slot number, where line card is located;
- 'module', specifying cage transceiver within the line card.

Signed-off-by: Vadim Pasternak <vadimp@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Vadim Pasternak 2022-04-11 17:46:54 +03:00 committed by Jakub Kicinski
parent 655cbb1d75
commit 7cb85d3c69
2 changed files with 9 additions and 2 deletions
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2
drivers/net/ethernet/mellanox/mlxsw/core_env.c
View File

@ -563,7 +563,7 @@ static int mlxsw_env_module_low_power_set(struct mlxsw_core *mlxsw_core,
u16 eeprom_override_mask, eeprom_override;
char pmmp_pl[MLXSW_REG_PMMP_LEN];
mlxsw_reg_pmmp_pack(pmmp_pl, module);
mlxsw_reg_pmmp_pack(pmmp_pl, 0, module);
mlxsw_reg_pmmp_sticky_set(pmmp_pl, true);
/* Mask all the bits except low power mode. */
eeprom_override_mask = ~MLXSW_REG_PMMP_EEPROM_OVERRIDE_LOW_POWER_MASK;

9
drivers/net/ethernet/mellanox/mlxsw/reg.h
View File

@ -5984,6 +5984,12 @@ MLXSW_REG_DEFINE(pmmp, MLXSW_REG_PMMP_ID, MLXSW_REG_PMMP_LEN);
*/
MLXSW_ITEM32(reg, pmmp, module, 0x00, 16, 8);
/* reg_pmmp_slot_index
* Slot index.
* Access: Index
*/
MLXSW_ITEM32(reg, pmmp, slot_index, 0x00, 24, 4);
/* reg_pmmp_sticky
* When set, will keep eeprom_override values after plug-out event.
* Access: OP
@ -6011,9 +6017,10 @@ enum {
*/
MLXSW_ITEM32(reg, pmmp, eeprom_override, 0x04, 0, 16);
static inline void mlxsw_reg_pmmp_pack(char *payload, u8 module)
static inline void mlxsw_reg_pmmp_pack(char *payload, u8 slot_index, u8 module)
{
MLXSW_REG_ZERO(pmmp, payload);
mlxsw_reg_pmmp_slot_index_set(payload, slot_index);
mlxsw_reg_pmmp_module_set(payload, module);
}