[PATCH net-next v4 5/9] net: ethernet: mtk_eth_soc: rely on MTK_MAX_DEVS and remove MTK_MAC_COUNT

From: Daniel Golle
Date: Fri Jul 21 2023 - 17:33:41 EST

From: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>

Get rid of MTK_MAC_COUNT since it is a duplicated of MTK_MAX_DEVS.

Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
Signed-off-by: Daniel Golle <daniel@xxxxxxxxxxxxxx>
---
drivers/net/ethernet/mediatek/mtk_eth_soc.c | 49 ++++++++++++---------
drivers/net/ethernet/mediatek/mtk_eth_soc.h | 1 -
2 files changed, 27 insertions(+), 23 deletions(-)

diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.c b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
index 6f27c66c69cba..e744b32a3928c 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c
@@ -963,7 +963,7 @@ static void mtk_stats_update(struct mtk_eth *eth)
{
int i;

- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
if (!eth->mac[i] || !eth->mac[i]->hw_stats)
continue;
if (spin_trylock(&eth->mac[i]->hw_stats->stats_lock)) {
@@ -1468,7 +1468,7 @@ static int mtk_queue_stopped(struct mtk_eth *eth)
{
int i;

- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
if (!eth->netdev[i])
continue;
if (netif_queue_stopped(eth->netdev[i]))
@@ -1482,7 +1482,7 @@ static void mtk_wake_queue(struct mtk_eth *eth)
{
int i;

- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
if (!eth->netdev[i])
continue;
netif_tx_wake_all_queues(eth->netdev[i]);
@@ -1941,7 +1941,7 @@ static int mtk_poll_rx(struct napi_struct *napi, int budget,
!(trxd.rxd4 & RX_DMA_SPECIAL_TAG))
mac = RX_DMA_GET_SPORT(trxd.rxd4) - 1;

- if (unlikely(mac < 0 || mac >= MTK_MAC_COUNT ||
+ if (unlikely(mac < 0 || mac >= MTK_MAX_DEVS ||
!eth->netdev[mac]))
goto release_desc;

@@ -2978,7 +2978,7 @@ static void mtk_dma_free(struct mtk_eth *eth)
const struct mtk_soc_data *soc = eth->soc;
int i;

- for (i = 0; i < MTK_MAC_COUNT; i++)
+ for (i = 0; i < MTK_MAX_DEVS; i++)
if (eth->netdev[i])
netdev_reset_queue(eth->netdev[i]);
if (eth->scratch_ring) {
@@ -3132,8 +3132,13 @@ static void mtk_gdm_config(struct mtk_eth *eth, u32 config)
if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628))
return;

- for (i = 0; i < MTK_MAC_COUNT; i++) {
- u32 val = mtk_r32(eth, MTK_GDMA_FWD_CFG(i));
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
+ u32 val;
+
+ if (!eth->netdev[i])
+ continue;
+
+ val = mtk_r32(eth, MTK_GDMA_FWD_CFG(i));

/* default setup the forward port to send frame to PDMA */
val &= ~0xffff;
@@ -3143,7 +3148,7 @@ static void mtk_gdm_config(struct mtk_eth *eth, u32 config)

val |= config;

- if (eth->netdev[i] && netdev_uses_dsa(eth->netdev[i]))
+ if (netdev_uses_dsa(eth->netdev[i]))
val |= MTK_GDMA_SPECIAL_TAG;

mtk_w32(eth, val, MTK_GDMA_FWD_CFG(i));
@@ -3745,15 +3750,15 @@ static int mtk_hw_init(struct mtk_eth *eth, bool reset)
* up with the more appropriate value when mtk_mac_config call is being
* invoked.
*/
- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
struct net_device *dev = eth->netdev[i];

- mtk_w32(eth, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(i));
- if (dev) {
- struct mtk_mac *mac = netdev_priv(dev);
+ if (!dev)
+ continue;

- mtk_set_mcr_max_rx(mac, dev->mtu + MTK_RX_ETH_HLEN);
- }
+ mtk_w32(eth, MAC_MCR_FORCE_LINK_DOWN, MTK_MAC_MCR(i));
+ mtk_set_mcr_max_rx(netdev_priv(dev),
+ dev->mtu + MTK_RX_ETH_HLEN);
}

/* Indicates CDM to parse the MTK special tag from CPU
@@ -3950,7 +3955,7 @@ static void mtk_pending_work(struct work_struct *work)
mtk_prepare_for_reset(eth);

/* stop all devices to make sure that dma is properly shut down */
- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
if (!eth->netdev[i] || !netif_running(eth->netdev[i]))
continue;

@@ -3966,8 +3971,8 @@ static void mtk_pending_work(struct work_struct *work)
mtk_hw_init(eth, true);

/* restart DMA and enable IRQs */
- for (i = 0; i < MTK_MAC_COUNT; i++) {
- if (!test_bit(i, &restart))
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
+ if (!eth->netdev[i] || !test_bit(i, &restart))
continue;

if (mtk_open(eth->netdev[i])) {
@@ -3994,7 +3999,7 @@ static int mtk_free_dev(struct mtk_eth *eth)
{
int i;

- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
if (!eth->netdev[i])
continue;
free_netdev(eth->netdev[i]);
@@ -4013,7 +4018,7 @@ static int mtk_unreg_dev(struct mtk_eth *eth)
{
int i;

- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
struct mtk_mac *mac;
if (!eth->netdev[i])
continue;
@@ -4316,7 +4321,7 @@ static int mtk_add_mac(struct mtk_eth *eth, struct device_node *np)
}

id = be32_to_cpup(_id);
- if (id >= MTK_MAC_COUNT) {
+ if (id >= MTK_MAX_DEVS) {
dev_err(eth->dev, "%d is not a valid mac id\n", id);
return -EINVAL;
}
@@ -4461,7 +4466,7 @@ void mtk_eth_set_dma_device(struct mtk_eth *eth, struct device *dma_dev)

rtnl_lock();

- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
dev = eth->netdev[i];

if (!dev || !(dev->flags & IFF_UP))
@@ -4767,7 +4772,7 @@ static int mtk_remove(struct platform_device *pdev)
int i;

/* stop all devices to make sure that dma is properly shut down */
- for (i = 0; i < MTK_MAC_COUNT; i++) {
+ for (i = 0; i < MTK_MAX_DEVS; i++) {
if (!eth->netdev[i])
continue;
mtk_stop(eth->netdev[i]);
diff --git a/drivers/net/ethernet/mediatek/mtk_eth_soc.h b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
index 297b1ba4853fa..e33be61acc047 100644
--- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h
+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h
@@ -33,7 +33,6 @@
#define MTK_TX_DMA_BUF_LEN_V2 0xffff
#define MTK_QDMA_RING_SIZE 2048
#define MTK_DMA_SIZE 512
-#define MTK_MAC_COUNT 2
#define MTK_RX_ETH_HLEN (ETH_HLEN + ETH_FCS_LEN)
#define MTK_RX_HLEN (NET_SKB_PAD + MTK_RX_ETH_HLEN + NET_IP_ALIGN)
#define MTK_DMA_DUMMY_DESC 0xffffffff
--
2.41.0