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Commit f1c7d9cc authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

mlxsw: reg: Add Policy-Engine Region eRP Register 



The PERERP register configures the region eRPs. It can be used, for
example, to enable lookup in the C-TCAM in addition to the A-TCAM.

To be able to perform a lookup in the C-TCAM we need to "use" the eRP
table. This is done by marking the pointer as valid, but zeroing the eRP
table vector.

Signed-off-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 481662a8

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

+71 −0
Original line number Diff line number Diff line
@@ -2579,6 +2579,76 @@ static inline void mlxsw_reg_percr_pack(char *payload, u16 region_id) 
	memset(payload + 0x20, 0xff, 96);

}



/* PERERP - Policy-Engine Region eRP Register

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

 * This register configures the region eRP. The region_id must be

 * allocated.

 */

#define MLXSW_REG_PERERP_ID 0x302B

#define MLXSW_REG_PERERP_LEN 0x1C



MLXSW_REG_DEFINE(pererp, MLXSW_REG_PERERP_ID, MLXSW_REG_PERERP_LEN);



/* reg_pererp_region_id

 * Region identifier.

 * Range 0..cap_max_regions-1

 * Access: Index

 */

MLXSW_ITEM32(reg, pererp, region_id, 0x00, 0, 16);



/* reg_pererp_ctcam_le

 * C-TCAM lookup enable. Reserved when erpt_pointer_valid = 0.

 * Access: RW

 */

MLXSW_ITEM32(reg, pererp, ctcam_le, 0x04, 28, 1);



/* reg_pererp_erpt_pointer_valid

 * erpt_pointer is valid.

 * Access: RW

 */

MLXSW_ITEM32(reg, pererp, erpt_pointer_valid, 0x10, 31, 1);



/* reg_pererp_erpt_bank_pointer

 * Pointer to eRP table bank. May be modified at any time.

 * Range 0..cap_max_erp_table_banks-1

 * Reserved when erpt_pointer_valid = 0

 */

MLXSW_ITEM32(reg, pererp, erpt_bank_pointer, 0x10, 16, 4);



/* reg_pererp_erpt_pointer

 * Pointer to eRP table within the eRP bank. Can be changed for an

 * existing region.

 * Range 0..cap_max_erp_table_size-1

 * Reserved when erpt_pointer_valid = 0

 * Access: RW

 */

MLXSW_ITEM32(reg, pererp, erpt_pointer, 0x10, 0, 8);



/* reg_pererp_erpt_vector

 * Vector of allowed eRP indexes starting from erpt_pointer within the

 * erpt_bank_pointer. Next entries will be in next bank.

 * Note that eRP index is used and not eRP ID.

 * Reserved when erpt_pointer_valid = 0

 * Access: RW

 */

MLXSW_ITEM_BIT_ARRAY(reg, pererp, erpt_vector, 0x14, 4, 1);



/* reg_pererp_master_rp_id

 * Master RP ID. When there are no eRPs, then this provides the eRP ID

 * for the lookup. Can be changed for an existing region.

 * Reserved when erpt_pointer_valid = 1

 * Access: RW

 */

MLXSW_ITEM32(reg, pererp, master_rp_id, 0x18, 0, 4);



static inline void mlxsw_reg_pererp_pack(char *payload, u16 region_id)

{

	MLXSW_REG_ZERO(pererp, payload);

	mlxsw_reg_pererp_region_id_set(payload, region_id);

	mlxsw_reg_pererp_ctcam_le_set(payload, true);

	mlxsw_reg_pererp_erpt_pointer_valid_set(payload, true);

}



/* IEDR - Infrastructure Entry Delete Register

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

 * This register is used for deleting entries from the entry tables.
@@ -8157,6 +8227,7 @@ static const struct mlxsw_reg_info *mlxsw_reg_infos[] = { 
	MLXSW_REG(ptce2),

	MLXSW_REG(perar),

	MLXSW_REG(percr),

	MLXSW_REG(pererp),

	MLXSW_REG(iedr),

	MLXSW_REG(qpcr),

	MLXSW_REG(qtct),