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net: airoha: read default PSE reserved pages value before updating

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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 23020f0493 ("net: airoha: Introduce ethernet support
for EN7581 SoC")

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Link: https://patch.msgid.link/20241001-airoha-eth-pse-fix-v2-1-9a56cdffd074@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Lorenzo Bianconi 2024-10-01 12:10:24 +02:00 committed by Jakub Kicinski
parent 7d68b6f664
commit 1f3e7ff4f2
1 changed files with 10 additions and 4 deletions
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14
drivers/net/ethernet/mediatek/airoha_eth.c
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@ -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));