* [PATCH] dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0
@ 2022-12-09 17:21 Fenghua Yu
2022-12-28 7:00 ` Vinod Koul
0 siblings, 1 reply; 2+ messages in thread
From: Fenghua Yu @ 2022-12-09 17:21 UTC (permalink / raw)
To: Vinod Koul, Dave Jiang; +Cc: linux-kernel, dmaengine, Fenghua Yu
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: ea7c8f598c32 ("dmaengine: idxd: restore traffic class defaults after wq reset")
Fixes: ade8a86b512c ("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>
---
drivers/dma/idxd/device.c | 2 +-
drivers/dma/idxd/init.c | 2 +-
drivers/dma/idxd/sysfs.c | 4 ++--
3 files changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
index b55405efd4ab..901257081524 100644
--- a/drivers/dma/idxd/device.c
+++ b/drivers/dma/idxd/device.c
@@ -834,7 +834,7 @@ 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 {
diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
index 1053e2bb4e9f..4ecd34200998 100644
--- a/drivers/dma/idxd/init.c
+++ b/drivers/dma/idxd/init.c
@@ -314,7 +314,7 @@ 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 {
diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
index 632166538458..9db35011037f 100644
--- a/drivers/dma/idxd/sysfs.c
+++ b/drivers/dma/idxd/sysfs.c
@@ -388,7 +388,7 @@ 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)
@@ -430,7 +430,7 @@ 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)
--
2.32.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0
2022-12-09 17:21 [PATCH] dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0 Fenghua Yu
@ 2022-12-28 7:00 ` Vinod Koul
0 siblings, 0 replies; 2+ messages in thread
From: Vinod Koul @ 2022-12-28 7:00 UTC (permalink / raw)
To: Fenghua Yu; +Cc: Dave Jiang, linux-kernel, dmaengine
On 09-12-22, 09:21, Fenghua Yu wrote:
> 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.
Applied, thanks
>
> Fixes: ea7c8f598c32 ("dmaengine: idxd: restore traffic class defaults after wq reset")
> Fixes: ade8a86b512c ("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>
> ---
> drivers/dma/idxd/device.c | 2 +-
> drivers/dma/idxd/init.c | 2 +-
> drivers/dma/idxd/sysfs.c | 4 ++--
> 3 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/dma/idxd/device.c b/drivers/dma/idxd/device.c
> index b55405efd4ab..901257081524 100644
> --- a/drivers/dma/idxd/device.c
> +++ b/drivers/dma/idxd/device.c
> @@ -834,7 +834,7 @@ 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 {
> diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
> index 1053e2bb4e9f..4ecd34200998 100644
> --- a/drivers/dma/idxd/init.c
> +++ b/drivers/dma/idxd/init.c
> @@ -314,7 +314,7 @@ 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 {
> diff --git a/drivers/dma/idxd/sysfs.c b/drivers/dma/idxd/sysfs.c
> index 632166538458..9db35011037f 100644
> --- a/drivers/dma/idxd/sysfs.c
> +++ b/drivers/dma/idxd/sysfs.c
> @@ -388,7 +388,7 @@ 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)
> @@ -430,7 +430,7 @@ 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)
> --
> 2.32.0
--
~Vinod
^ permalink raw reply [flat|nested] 2+ messages in thread
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2022-12-09 17:21 [PATCH] dmaengine: idxd: Set traffic class values in GRPCFG on DSA 2.0 Fenghua Yu
2022-12-28 7:00 ` Vinod Koul
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