mirrors/linux
1
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-06 00:47:56 -04:00
Code Issues Packages Projects Releases Wiki Activity

mlxsw: reg: Adjust PPCNT register to support local port 255

Browse Source 
Local port 255 has a special meaning in PPCNT register, it is used to
refer to all local ports. This wild card ability is not currently used
by the driver.

Special casing local port 255 in Spectrum-4 systems where it is a valid
port is going to be a problem.

Work around this issue by adding and always setting the 'lp_gl' bit
which instructs the device's firmware to treat this local port like an
ordinary port.

Signed-off-by: Amit Cohen <amcohen@nvidia.com>
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Amit Cohen
2021-12-01 10:12:36 +02:00
committed by David S. Miller
parent da56f1a0d2
commit 242e696e03
1 changed files with 9 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/net/ethernet/mellanox/mlxsw/reg.h
View File

@@ -4910,8 +4910,6 @@ MLXSW_ITEM32(reg, ppcnt, swid, 0x00, 24, 8);
/* reg_ppcnt_local_port
* Local port number.
* 255 indicates all ports on the device, and is only allowed
* for Set() operation.
* Access: Index
*/
MLXSW_ITEM32_LP(reg, ppcnt, 0x00, 16, 0x00, 12);
@@ -4963,6 +4961,14 @@ MLXSW_ITEM32(reg, ppcnt, grp, 0x00, 0, 6);
*/
MLXSW_ITEM32(reg, ppcnt, clr, 0x04, 31, 1);
/* reg_ppcnt_lp_gl
* Local port global variable.
* 0: local_port 255 = all ports of the device.
* 1: local_port indicates local port number for all ports.
* Access: OP
*/
MLXSW_ITEM32(reg, ppcnt, lp_gl, 0x04, 30, 1);
/* reg_ppcnt_prio_tc
* Priority for counter set that support per priority, valid values: 0-7.
* Traffic class for counter set that support per traffic class,
@@ -5396,6 +5402,7 @@ static inline void mlxsw_reg_ppcnt_pack(char *payload, u8 local_port,
mlxsw_reg_ppcnt_pnat_set(payload, 0);
mlxsw_reg_ppcnt_grp_set(payload, grp);
mlxsw_reg_ppcnt_clr_set(payload, 0);
mlxsw_reg_ppcnt_lp_gl_set(payload, 1);
mlxsw_reg_ppcnt_prio_tc_set(payload, prio_tc);
}