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mlxsw: reg: Add lossless settings for PBMC register

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When configuring PAUSE frames and PFC we'll need to configure the
Xon/Xoff threshold for the priority group (PG) buffers.

Add the Xon/Xoff threshold fields to the PBMC register so that we can
configure these when needed.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Signed-off-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ido Schimmel 2016-04-06 17:10:13 +02:00 • committed by David S. Miller
parent 6f253d8381
commit 155f9de2e0
1 changed files with 35 additions and 0 deletions
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35
drivers/net/ethernet/mellanox/mlxsw/reg.h
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@ -2788,6 +2788,30 @@ MLXSW_ITEM32_INDEXED(reg, pbmc, buf_epsb, 0x0C, 24, 1, 0x08, 0x00, false);
*/ */
MLXSW_ITEM32_INDEXED(reg, pbmc, buf_size, 0x0C, 0, 16, 0x08, 0x00, false); MLXSW_ITEM32_INDEXED(reg, pbmc, buf_size, 0x0C, 0, 16, 0x08, 0x00, false);
/* reg_pbmc_buf_xoff_threshold
* Once the amount of data in the buffer goes above this value, device
* starts sending PFC frames for all priorities associated with the
* buffer. Units are represented in cells. Reserved in case of lossy
* buffer.
* Access: RW
*
* Note: In Spectrum, reserved for buffer[9].
*/
MLXSW_ITEM32_INDEXED(reg, pbmc, buf_xoff_threshold, 0x0C, 16, 16,
0x08, 0x04, false);
/* reg_pbmc_buf_xon_threshold
* When the amount of data in the buffer goes below this value, device
* stops sending PFC frames for the priorities associated with the
* buffer. Units are represented in cells. Reserved in case of lossy
* buffer.
* Access: RW
*
* Note: In Spectrum, reserved for buffer[9].
*/
MLXSW_ITEM32_INDEXED(reg, pbmc, buf_xon_threshold, 0x0C, 0, 16,
0x08, 0x04, false);
static inline void mlxsw_reg_pbmc_pack(char *payload, u8 local_port, static inline void mlxsw_reg_pbmc_pack(char *payload, u8 local_port,
u16 xoff_timer_value, u16 xoff_refresh) u16 xoff_timer_value, u16 xoff_refresh)
{ {
@ -2806,6 +2830,17 @@ static inline void mlxsw_reg_pbmc_lossy_buffer_pack(char *payload,
mlxsw_reg_pbmc_buf_size_set(payload, buf_index, size); mlxsw_reg_pbmc_buf_size_set(payload, buf_index, size);
} }
static inline void mlxsw_reg_pbmc_lossless_buffer_pack(char *payload,
int buf_index, u16 size,
u16 threshold)
{
mlxsw_reg_pbmc_buf_lossy_set(payload, buf_index, 0);
mlxsw_reg_pbmc_buf_epsb_set(payload, buf_index, 0);
mlxsw_reg_pbmc_buf_size_set(payload, buf_index, size);
mlxsw_reg_pbmc_buf_xoff_threshold_set(payload, buf_index, threshold);
mlxsw_reg_pbmc_buf_xon_threshold_set(payload, buf_index, threshold);
}
/* PSPA - Port Switch Partition Allocation /* PSPA - Port Switch Partition Allocation
* --------------------------------------- * ---------------------------------------
* Controls the association of a port with a switch partition and enables * Controls the association of a port with a switch partition and enables