Commit 418089a8 authored by Nir Dotan's avatar Nir Dotan Committed by David S. Miller
Browse files

mlxsw: reg: Add Policy Engine Algorithmic Bloom Filter Entries Register 



Bloom filter is a bit vector which allows the HW a fast lookup on a
small size bit vector, that may reduce the number of lookups on the
A-TCAM memory. PEABFE register allows setting values to the bits of
the bit vector mentioned above.
Add the register to be later used in A-TCAM optimizations.

Signed-off-by: default avatarNir Dotan <nird@mellanox.com>
Signed-off-by: default avatarIdo Schimmel <idosch@mellanox.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 0634d694

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

+67 −0
Original line number Diff line number Diff line
@@ -3095,6 +3095,72 @@ static inline void mlxsw_reg_pererp_pack(char *payload, u16 region_id, 
	mlxsw_reg_pererp_master_rp_id_set(payload, master_rp_id);

}



/* PEABFE - Policy-Engine Algorithmic Bloom Filter Entries Register

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

 * This register configures the Bloom filter entries.

 */

#define MLXSW_REG_PEABFE_ID 0x3022

#define MLXSW_REG_PEABFE_BASE_LEN 0x10

#define MLXSW_REG_PEABFE_BF_REC_LEN 0x4

#define MLXSW_REG_PEABFE_BF_REC_MAX_COUNT 256

#define MLXSW_REG_PEABFE_LEN (MLXSW_REG_PEABFE_BASE_LEN + \

			      MLXSW_REG_PEABFE_BF_REC_LEN * \

			      MLXSW_REG_PEABFE_BF_REC_MAX_COUNT)



MLXSW_REG_DEFINE(peabfe, MLXSW_REG_PEABFE_ID, MLXSW_REG_PEABFE_LEN);



/* reg_peabfe_size

 * Number of BF entries to be updated.

 * Range 1..256

 * Access: Op

 */

MLXSW_ITEM32(reg, peabfe, size, 0x00, 0, 9);



/* reg_peabfe_bf_entry_state

 * Bloom filter state

 * 0 - Clear

 * 1 - Set

 * Access: RW

 */

MLXSW_ITEM32_INDEXED(reg, peabfe, bf_entry_state,

		     MLXSW_REG_PEABFE_BASE_LEN,	31, 1,

		     MLXSW_REG_PEABFE_BF_REC_LEN, 0x00, false);



/* reg_peabfe_bf_entry_bank

 * Bloom filter bank ID

 * Range 0..cap_max_erp_table_banks-1

 * Access: Index

 */

MLXSW_ITEM32_INDEXED(reg, peabfe, bf_entry_bank,

		     MLXSW_REG_PEABFE_BASE_LEN,	24, 4,

		     MLXSW_REG_PEABFE_BF_REC_LEN, 0x00, false);



/* reg_peabfe_bf_entry_index

 * Bloom filter entry index

 * Range 0..2^cap_max_bf_log-1

 * Access: Index

 */

MLXSW_ITEM32_INDEXED(reg, peabfe, bf_entry_index,

		     MLXSW_REG_PEABFE_BASE_LEN,	0, 24,

		     MLXSW_REG_PEABFE_BF_REC_LEN, 0x00, false);



static inline void mlxsw_reg_peabfe_pack(char *payload)

{

	MLXSW_REG_ZERO(peabfe, payload);

}



static inline void mlxsw_reg_peabfe_rec_pack(char *payload, int rec_index,

					     u8 state, u8 bank, u32 bf_index)

{

	u8 num_rec = mlxsw_reg_peabfe_size_get(payload);



	if (rec_index >= num_rec)

		mlxsw_reg_peabfe_size_set(payload, rec_index + 1);

	mlxsw_reg_peabfe_bf_entry_state_set(payload, rec_index, state);

	mlxsw_reg_peabfe_bf_entry_bank_set(payload, rec_index, bank);

	mlxsw_reg_peabfe_bf_entry_index_set(payload, rec_index, bf_index);

}



/* IEDR - Infrastructure Entry Delete Register

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

 * This register is used for deleting entries from the entry tables.
@@ -9608,6 +9674,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = { 
	MLXSW_REG(pemrbt),

	MLXSW_REG(ptce2),

	MLXSW_REG(perpt),

	MLXSW_REG(peabfe),

	MLXSW_REG(perar),

	MLXSW_REG(ptce3),

	MLXSW_REG(percr),