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dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0

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[ Upstream commit 9735bde364 ]

On DSA/IAX 1.0, TC-A and TC-B in GRPCFG are set as 1 to have best
performance and cannot be changed through sysfs knobs unless override
option is given.

The same values should be set on DSA 2.0 as well.

Fixes: ea7c8f598c ("dmaengine: idxd: restore traffic class defaults after wq reset")
Fixes: ade8a86b51 ("dmaengine: idxd: Set defaults for GRPCFG traffic class")
Signed-off-by: Fenghua Yu <fenghua.yu@intel.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
Link: https://lore.kernel.org/r/20221209172141.562648-1-fenghua.yu@intel.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Fenghua Yu 2022-12-09 09:21:41 -08:00 committed by Greg Kroah-Hartman
parent 6a8a02dcfa
commit d901a7fb40
3 changed files with 4 additions and 4 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
drivers/dma/idxd/device.c
View file

@ -702,7 +702,7 @@ static void idxd_groups_clear_state(struct idxd_device *idxd)
group->use_rdbuf_limit = false;
group->rdbufs_allowed = 0;
group->rdbufs_reserved = 0;
if (idxd->hw.version < DEVICE_VERSION_2 && !tc_override) {
if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override) {
group->tc_a = 1;
group->tc_b = 1;
} else {

2
drivers/dma/idxd/init.c
View file

@ -340,7 +340,7 @@ static int idxd_setup_groups(struct idxd_device *idxd)
}
idxd->groups[i] = group;
if (idxd->hw.version < DEVICE_VERSION_2 && !tc_override) {
if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override) {
group->tc_a = 1;
group->tc_b = 1;
} else {

4
drivers/dma/idxd/sysfs.c
View file

@ -327,7 +327,7 @@ static ssize_t group_traffic_class_a_store(struct device *dev,
if (idxd->state == IDXD_DEV_ENABLED)
return -EPERM;
if (idxd->hw.version < DEVICE_VERSION_2 && !tc_override)
if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override)
return -EPERM;
if (val < 0 || val > 7)
@ -369,7 +369,7 @@ static ssize_t group_traffic_class_b_store(struct device *dev,
if (idxd->state == IDXD_DEV_ENABLED)
return -EPERM;
if (idxd->hw.version < DEVICE_VERSION_2 && !tc_override)
if (idxd->hw.version <= DEVICE_VERSION_2 && !tc_override)
return -EPERM;
if (val < 0 || val > 7)