[PATCH v2 11/14] net: ethernet: mtk_eth_soc: allocate struct mtk_ppe separately

From: Felix Fietkau
Date: Tue Apr 05 2022 - 22:24:10 EST

Preparation for adding more data to it, which will increase its size.

Signed-off-by: Felix Fietkau <nbd@xxxxxxxx>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 11 ++++++-----
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 2 +-
drivers/net/ethernet/mediatek/mtk_ppe.c | 11 ++++++++---
drivers/net/ethernet/mediatek/mtk_ppe.h | 3 +--
drivers/net/ethernet/mediatek/mtk_ppe_offload.c | 12 ++++++------
5 files changed, 22 insertions(+), 17 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 4d7c542d89fb..5a2f3cb26e66 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -2269,7 +2269,7 @@ static int mtk_open(struct net_device *dev)
if (err)
return err;

- if (eth->soc->offload_version && mtk_ppe_start(&eth->ppe) == 0)
+ if (eth->soc->offload_version && mtk_ppe_start(eth->ppe) == 0)
gdm_config = MTK_GDMA_TO_PPE;

mtk_gdm_config(eth, gdm_config);
@@ -2343,7 +2343,7 @@ static int mtk_stop(struct net_device *dev)
mtk_dma_free(eth);

if (eth->soc->offload_version)
- mtk_ppe_stop(&eth->ppe);
+ mtk_ppe_stop(eth->ppe);

return 0;
}
@@ -3262,10 +3262,11 @@ static int mtk_probe(struct platform_device *pdev)
}

if (eth->soc->offload_version) {
- err = mtk_ppe_init(&eth->ppe, eth->dev,
- eth->base + MTK_ETH_PPE_BASE, 2);
- if (err)
+ eth->ppe = mtk_ppe_init(eth->dev, eth->base + MTK_ETH_PPE_BASE, 2);
+ if (!eth->ppe) {
+ err = -ENOMEM;
goto err_free_dev;
+ }

err = mtk_eth_offload_init(eth);
if (err)
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 74661682fd92..c98c7ee42c6f 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -985,7 +985,7 @@ struct mtk_eth {
u32 rx_dma_l4_valid;
int ip_align;

- struct mtk_ppe ppe;
+ struct mtk_ppe *ppe;
struct rhashtable flow_table;
};

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.c b/drivers/net/ethernet/mediatek/mtk_ppe.c
index 472bcd3269a7..c56518272729 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.c
@@ -384,10 +384,15 @@ int mtk_foe_entry_commit(struct mtk_ppe *ppe, struct mtk_foe_entry *entry,
return hash;
}

-int mtk_ppe_init(struct mtk_ppe *ppe, struct device *dev, void __iomem *base,
+struct mtk_ppe *mtk_ppe_init(struct device *dev, void __iomem *base,
int version)
{
struct mtk_foe_entry *foe;
+ struct mtk_ppe *ppe;
+
+ ppe = devm_kzalloc(dev, sizeof(*ppe), GFP_KERNEL);
+ if (!ppe)
+ return NULL;

/* need to allocate a separate device, since it PPE DMA access is
* not coherent.
@@ -399,13 +404,13 @@ int mtk_ppe_init(struct mtk_ppe *ppe, struct device *dev, void __iomem *base,
foe = dmam_alloc_coherent(ppe->dev, MTK_PPE_ENTRIES * sizeof(*foe),
&ppe->foe_phys, GFP_KERNEL);
if (!foe)
- return -ENOMEM;
+ return NULL;

ppe->foe_table = foe;

mtk_ppe_debugfs_init(ppe);

- return 0;
+ return ppe;
}

static void mtk_ppe_init_foe_table(struct mtk_ppe *ppe)
diff --git a/drivers/net/ethernet/mediatek/mtk_ppe.h b/drivers/net/ethernet/mediatek/mtk_ppe.h
index df8ccaf48171..190d2560ac86 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe.h
+++ b/drivers/net/ethernet/mediatek/mtk_ppe.h
@@ -246,8 +246,7 @@ struct mtk_ppe {
void *acct_table;
};

-int mtk_ppe_init(struct mtk_ppe *ppe, struct device *dev, void __iomem *base,
- int version);
+struct mtk_ppe *mtk_ppe_init(struct device *dev, void __iomem *base, int version);
int mtk_ppe_start(struct mtk_ppe *ppe);
int mtk_ppe_stop(struct mtk_ppe *ppe);

diff --git a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
index da3bc93676f8..76a94ec85232 100644
--- a/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
+++ b/drivers/net/ethernet/mediatek/mtk_ppe_offload.c
@@ -411,7 +411,7 @@ mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)

entry->cookie = f->cookie;
timestamp = mtk_eth_timestamp(eth);
- hash = mtk_foe_entry_commit(&eth->ppe, &foe, timestamp);
+ hash = mtk_foe_entry_commit(eth->ppe, &foe, timestamp);
if (hash < 0) {
err = hash;
goto free;
@@ -426,7 +426,7 @@ mtk_flow_offload_replace(struct mtk_eth *eth, struct flow_cls_offload *f)

return 0;
clear_flow:
- mtk_foe_entry_clear(&eth->ppe, hash);
+ mtk_foe_entry_clear(eth->ppe, hash);
free:
kfree(entry);
if (wed_index >= 0)
@@ -444,7 +444,7 @@ mtk_flow_offload_destroy(struct mtk_eth *eth, struct flow_cls_offload *f)
if (!entry)
return -ENOENT;

- mtk_foe_entry_clear(&eth->ppe, entry->hash);
+ mtk_foe_entry_clear(eth->ppe, entry->hash);
rhashtable_remove_fast(&eth->flow_table, &entry->node,
mtk_flow_ht_params);
if (entry->wed_index >= 0)
@@ -466,7 +466,7 @@ mtk_flow_offload_stats(struct mtk_eth *eth, struct flow_cls_offload *f)
if (!entry)
return -ENOENT;

- timestamp = mtk_foe_entry_timestamp(&eth->ppe, entry->hash);
+ timestamp = mtk_foe_entry_timestamp(eth->ppe, entry->hash);
if (timestamp < 0)
return -ETIMEDOUT;

@@ -522,7 +522,7 @@ mtk_eth_setup_tc_block(struct net_device *dev, struct flow_block_offload *f)
struct flow_block_cb *block_cb;
flow_setup_cb_t *cb;

- if (!eth->ppe.foe_table)
+ if (!eth->ppe || !eth->ppe->foe_table)
return -EOPNOTSUPP;

if (f->binder_type != FLOW_BLOCK_BINDER_TYPE_CLSACT_INGRESS)
@@ -574,7 +574,7 @@ int mtk_eth_setup_tc(struct net_device *dev, enum tc_setup_type type,

int mtk_eth_offload_init(struct mtk_eth *eth)
{
- if (!eth->ppe.foe_table)
+ if (!eth->ppe || !eth->ppe->foe_table)
return 0;

return rhashtable_init(&eth->flow_table, &mtk_flow_ht_params);
--
2.35.1