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Commit 7a921a1e authored by Ido Schimmel's avatar Ido Schimmel Committed by David S. Miller
Browse files

mlxsw: spectrum_acl: Add support for Spectrum-2 block encoding 



Encode each flexible key block in the general block scheme according its
block index.

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 a6d70a87

drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_flex_keys.c

+68 −0
Original line number Diff line number Diff line
@@ -242,7 +242,75 @@ static const struct mlxsw_afk_block mlxsw_sp2_afk_blocks[] = { 
	MLXSW_AFK_BLOCK(0x92, mlxsw_sp_afk_element_info_l4_2),

};



#define MLXSW_SP2_AFK_BITS_PER_BLOCK 36



/* A block in Spectrum-2 is of the following form:

 *

 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

 * |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |35|34|33|32|

 * +-----------------------------------------------------------------------------------------------+

 * |31|30|29|28|27|26|25|24|23|22|21|20|19|18|17|16|15|14|13|12|11|10| 9| 8| 7| 6| 5| 4| 3| 2| 1| 0|

 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

 */

MLXSW_ITEM64(sp2_afk, block, value, 0x00, 0, MLXSW_SP2_AFK_BITS_PER_BLOCK);



/* The key / mask block layout in Spectrum-2 is of the following form:

 *

 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

 * |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |                block11_high                   |

 * +-----------------------------------------------------------------------------------------------+

 * |                    block11_low                               |         block10_high           |

 * +--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+--+

 * ...

 */



struct mlxsw_sp2_afk_block_layout {

	unsigned short offset;

	struct mlxsw_item item;

};



#define MLXSW_SP2_AFK_BLOCK_LAYOUT(_block, _offset, _shift)			\

	{									\

		.offset = _offset,						\

		{								\

			.shift = _shift,					\

			.size = {.bits = MLXSW_SP2_AFK_BITS_PER_BLOCK},		\

			.name = #_block,					\

		}								\

	}									\



static const struct mlxsw_sp2_afk_block_layout mlxsw_sp2_afk_blocks_layout[] = {

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block0, 0x30, 0),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block1, 0x2C, 4),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block2, 0x28, 8),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block3, 0x24, 12),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block4, 0x20, 16),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block5, 0x1C, 20),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block6, 0x18, 24),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block7, 0x14, 28),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block8, 0x0C, 0),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block9, 0x08, 4),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block10, 0x04, 8),

	MLXSW_SP2_AFK_BLOCK_LAYOUT(block11, 0x00, 12),

};



static void mlxsw_sp2_afk_encode_block(char *block, int block_index,

				       char *output)

{

	u64 block_value = mlxsw_sp2_afk_block_value_get(block);

	const struct mlxsw_sp2_afk_block_layout *block_layout;



	if (WARN_ON(block_index < 0 ||

		    block_index >= ARRAY_SIZE(mlxsw_sp2_afk_blocks_layout)))

		return;



	block_layout = &mlxsw_sp2_afk_blocks_layout[block_index];

	__mlxsw_item_set64(output + block_layout->offset,

			   &block_layout->item, 0, block_value);

}



const struct mlxsw_afk_ops mlxsw_sp2_afk_ops = {

	.blocks		= mlxsw_sp2_afk_blocks,

	.blocks_count	= ARRAY_SIZE(mlxsw_sp2_afk_blocks),

	.encode_block	= mlxsw_sp2_afk_encode_block,

};