[PATCH net-next v2 0/2] net: airoha: Fix PSE memory configuration

[PATCH net-next v2 0/2] net: airoha: Fix PSE memory configuration

[Lorenzo Bianconi]

Align PSE memory configuration to vendor SDK.
Increase initial value of PSE reserved memory in
airoha_fe_pse_ports_init() by the value used for the second Packet
Processor Engine (PPE2).
Do not overwrite the default value for the number of PSE reserved pages
in airoha_fe_set_pse_oq_rsv().
Post this series to net-next since these are not issues visible to the
user.

---
Changes in v2:
- fixed commit logs
- Link to v1: https://lore.kernel.org/r/20240930-airoha-eth-pse-fix-v1-0-f41f2f35abb9@kernel.org

---
Lorenzo Bianconi (2):
      net: airoha: read default PSE reserved pages value before updating
      net: airoha: fix PSE memory configuration in airoha_fe_pse_ports_init()

 drivers/net/ethernet/mediatek/airoha_eth.c | 20 ++++++++++++++------
 1 file changed, 14 insertions(+), 6 deletions(-)
---
base-commit: c824deb1a89755f70156b5cdaf569fca80698719
change-id: 20240923-airoha-eth-pse-fix-f303134e0ccf

Best regards,
-- 
Lorenzo Bianconi <lorenzo@kernel.org>

[PATCH net-next v2 1/2] net: airoha: read default PSE reserved pages value before updating

[Lorenzo Bianconi]

Store the default value for the number of PSE reserved pages in orig_val
at the beginning of airoha_fe_set_pse_oq_rsv routine, before updating it
with airoha_fe_set_pse_queue_rsv_pages().
Introduce airoha_fe_get_pse_all_rsv utility routine.

Introduced by commit 23020f049327 ("net: airoha: Introduce ethernet support
for EN7581 SoC")

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/net/ethernet/mediatek/airoha_eth.c | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/airoha_eth.c b/drivers/net/ethernet/mediatek/airoha_eth.c
index 930f180688e5..480540526bdb 100644
--- a/drivers/net/ethernet/mediatek/airoha_eth.c
+++ b/drivers/net/ethernet/mediatek/airoha_eth.c
@@ -1116,17 +1116,23 @@ static void airoha_fe_set_pse_queue_rsv_pages(struct airoha_eth *eth,
 		      PSE_CFG_WR_EN_MASK | PSE_CFG_OQRSV_SEL_MASK);
 }
 
+static u32 airoha_fe_get_pse_all_rsv(struct airoha_eth *eth)
+{
+	u32 val = airoha_fe_rr(eth, REG_FE_PSE_BUF_SET);
+
+	return FIELD_GET(PSE_ALLRSV_MASK, val);
+}
+
 static int airoha_fe_set_pse_oq_rsv(struct airoha_eth *eth,
 				    u32 port, u32 queue, u32 val)
 {
-	u32 orig_val, tmp, all_rsv, fq_limit;
+	u32 orig_val = airoha_fe_get_pse_queue_rsv_pages(eth, port, queue);
+	u32 tmp, all_rsv, fq_limit;
 
 	airoha_fe_set_pse_queue_rsv_pages(eth, port, queue, val);
 
 	/* modify all rsv */
-	orig_val = airoha_fe_get_pse_queue_rsv_pages(eth, port, queue);
-	tmp = airoha_fe_rr(eth, REG_FE_PSE_BUF_SET);
-	all_rsv = FIELD_GET(PSE_ALLRSV_MASK, tmp);
+	all_rsv = airoha_fe_get_pse_all_rsv(eth);
 	all_rsv += (val - orig_val);
 	airoha_fe_rmw(eth, REG_FE_PSE_BUF_SET, PSE_ALLRSV_MASK,
 		      FIELD_PREP(PSE_ALLRSV_MASK, all_rsv));

-- 
2.46.2

[PATCH net-next v2 2/2] net: airoha: fix PSE memory configuration in airoha_fe_pse_ports_init()

[Lorenzo Bianconi]

Align PSE memory configuration to vendor SDK. In particular, increase
initial value of PSE reserved memory in airoha_fe_pse_ports_init()
routine by the value used for the second Packet Processor Engine (PPE2)
and do not overwrite the default value.

Introduced by commit 23020f049327 ("net: airoha: Introduce ethernet support
for EN7581 SoC")

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
 drivers/net/ethernet/mediatek/airoha_eth.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/airoha_eth.c b/drivers/net/ethernet/mediatek/airoha_eth.c
index 480540526bdb..2e01abc70c17 100644
--- a/drivers/net/ethernet/mediatek/airoha_eth.c
+++ b/drivers/net/ethernet/mediatek/airoha_eth.c
@@ -1172,11 +1172,13 @@ static void airoha_fe_pse_ports_init(struct airoha_eth *eth)
 		[FE_PSE_PORT_GDM4] = 2,
 		[FE_PSE_PORT_CDM5] = 2,
 	};
+	u32 all_rsv;
 	int q;
 
+	all_rsv = airoha_fe_get_pse_all_rsv(eth);
 	/* hw misses PPE2 oq rsv */
-	airoha_fe_set(eth, REG_FE_PSE_BUF_SET,
-		      PSE_RSV_PAGES * pse_port_num_queues[FE_PSE_PORT_PPE2]);
+	all_rsv += PSE_RSV_PAGES * pse_port_num_queues[FE_PSE_PORT_PPE2];
+	airoha_fe_set(eth, REG_FE_PSE_BUF_SET, all_rsv);
 
 	/* CMD1 */
 	for (q = 0; q < pse_port_num_queues[FE_PSE_PORT_CDM1]; q++)

-- 
2.46.2

Re: [PATCH net-next v2 1/2] net: airoha: read default PSE reserved pages value before updating

[Simon Horman]

On Tue, Oct 01, 2024 at 12:10:24PM +0200, Lorenzo Bianconi wrote:
> Store the default value for the number of PSE reserved pages in orig_val
> at the beginning of airoha_fe_set_pse_oq_rsv routine, before updating it
> with airoha_fe_set_pse_queue_rsv_pages().
> Introduce airoha_fe_get_pse_all_rsv utility routine.
> 
> Introduced by commit 23020f049327 ("net: airoha: Introduce ethernet support
> for EN7581 SoC")
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>

Reviewed-by: Simon Horman <horms@kernel.org>

Re: [PATCH net-next v2 2/2] net: airoha: fix PSE memory configuration in airoha_fe_pse_ports_init()

[Simon Horman]

On Tue, Oct 01, 2024 at 12:10:25PM +0200, Lorenzo Bianconi wrote:
> Align PSE memory configuration to vendor SDK. In particular, increase
> initial value of PSE reserved memory in airoha_fe_pse_ports_init()
> routine by the value used for the second Packet Processor Engine (PPE2)
> and do not overwrite the default value.
> 
> Introduced by commit 23020f049327 ("net: airoha: Introduce ethernet support
> for EN7581 SoC")
> 
> Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>

Reviewed-by: Simon Horman <horms@kernel.org>

Re: [PATCH net-next v2 0/2] net: airoha: Fix PSE memory configuration

[patchwork-bot+netdevbpf]

Hello:

This series was applied to netdev/net-next.git (main)
by Jakub Kicinski <kuba@kernel.org>:

On Tue, 01 Oct 2024 12:10:23 +0200 you wrote:
> Align PSE memory configuration to vendor SDK.
> Increase initial value of PSE reserved memory in
> airoha_fe_pse_ports_init() by the value used for the second Packet
> Processor Engine (PPE2).
> Do not overwrite the default value for the number of PSE reserved pages
> in airoha_fe_set_pse_oq_rsv().
> Post this series to net-next since these are not issues visible to the
> user.
> 
> [...]

Here is the summary with links:
  - [net-next,v2,1/2] net: airoha: read default PSE reserved pages value before updating
    https://git.kernel.org/netdev/net-next/c/1f3e7ff4f296
  - [net-next,v2,2/2] net: airoha: fix PSE memory configuration in airoha_fe_pse_ports_init()
    https://git.kernel.org/netdev/net-next/c/8e38e08f2c56

You are awesome, thank you!
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