diff options
Diffstat (limited to 'target/linux/generic/backport-5.15/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch')
| -rw-r--r-- | target/linux/generic/backport-5.15/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch | 138 |
1 files changed, 0 insertions, 138 deletions
diff --git a/target/linux/generic/backport-5.15/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch b/target/linux/generic/backport-5.15/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch deleted file mode 100644 index 289d140f34..0000000000 --- a/target/linux/generic/backport-5.15/611-v5.12-net-ethernet-mediatek-support-setting-MTU.patch +++ /dev/null @@ -1,138 +0,0 @@ -From 4fd59792097a6b2fb949d41264386a7ecade469e Mon Sep 17 00:00:00 2001 -From: DENG Qingfang <dqfext@gmail.com> -Date: Mon, 25 Jan 2021 12:20:46 +0800 -Subject: [PATCH] net: ethernet: mediatek: support setting MTU - -MT762x HW, except for MT7628, supports frame length up to 2048 -(maximum length on GDM), so allow setting MTU up to 2030. - -Also set the default frame length to the hardware default 1518. - -Signed-off-by: DENG Qingfang <dqfext@gmail.com> -Reviewed-by: Andrew Lunn <andrew@lunn.ch> -Link: https://lore.kernel.org/r/20210125042046.5599-1-dqfext@gmail.com -Signed-off-by: Jakub Kicinski <kuba@kernel.org> ---- - drivers/net/ethernet/mediatek/mtk_eth_soc.c | 43 ++++++++++++++++++--- - drivers/net/ethernet/mediatek/mtk_eth_soc.h | 12 ++++-- - 2 files changed, 47 insertions(+), 8 deletions(-) - ---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.c -+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.c -@@ -355,7 +355,7 @@ static void mtk_mac_config(struct phylin - /* Setup gmac */ - mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); - mcr_new = mcr_cur; -- mcr_new |= MAC_MCR_MAX_RX_1536 | MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | -+ mcr_new |= MAC_MCR_IPG_CFG | MAC_MCR_FORCE_MODE | - MAC_MCR_BACKOFF_EN | MAC_MCR_BACKPR_EN | MAC_MCR_FORCE_LINK; - - /* Only update control register when needed! */ -@@ -782,8 +782,8 @@ static void mtk_get_stats64(struct net_d - static inline int mtk_max_frag_size(int mtu) - { - /* make sure buf_size will be at least MTK_MAX_RX_LENGTH */ -- if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH) -- mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; -+ if (mtu + MTK_RX_ETH_HLEN < MTK_MAX_RX_LENGTH_2K) -+ mtu = MTK_MAX_RX_LENGTH_2K - MTK_RX_ETH_HLEN; - - return SKB_DATA_ALIGN(MTK_RX_HLEN + mtu) + - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); -@@ -794,7 +794,7 @@ static inline int mtk_max_buf_size(int f - int buf_size = frag_size - NET_SKB_PAD - NET_IP_ALIGN - - SKB_DATA_ALIGN(sizeof(struct skb_shared_info)); - -- WARN_ON(buf_size < MTK_MAX_RX_LENGTH); -+ WARN_ON(buf_size < MTK_MAX_RX_LENGTH_2K); - - return buf_size; - } -@@ -2606,6 +2606,35 @@ static void mtk_uninit(struct net_device - mtk_rx_irq_disable(eth, ~0); - } - -+static int mtk_change_mtu(struct net_device *dev, int new_mtu) -+{ -+ int length = new_mtu + MTK_RX_ETH_HLEN; -+ struct mtk_mac *mac = netdev_priv(dev); -+ struct mtk_eth *eth = mac->hw; -+ u32 mcr_cur, mcr_new; -+ -+ if (!MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) { -+ mcr_cur = mtk_r32(mac->hw, MTK_MAC_MCR(mac->id)); -+ mcr_new = mcr_cur & ~MAC_MCR_MAX_RX_MASK; -+ -+ if (length <= 1518) -+ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1518); -+ else if (length <= 1536) -+ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1536); -+ else if (length <= 1552) -+ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_1552); -+ else -+ mcr_new |= MAC_MCR_MAX_RX(MAC_MCR_MAX_RX_2048); -+ -+ if (mcr_new != mcr_cur) -+ mtk_w32(mac->hw, mcr_new, MTK_MAC_MCR(mac->id)); -+ } -+ -+ dev->mtu = new_mtu; -+ -+ return 0; -+} -+ - static int mtk_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd) - { - struct mtk_mac *mac = netdev_priv(dev); -@@ -2902,6 +2931,7 @@ static const struct net_device_ops mtk_n - .ndo_set_mac_address = mtk_set_mac_address, - .ndo_validate_addr = eth_validate_addr, - .ndo_do_ioctl = mtk_do_ioctl, -+ .ndo_change_mtu = mtk_change_mtu, - .ndo_tx_timeout = mtk_tx_timeout, - .ndo_get_stats64 = mtk_get_stats64, - .ndo_fix_features = mtk_fix_features, -@@ -3004,7 +3034,10 @@ static int mtk_add_mac(struct mtk_eth *e - eth->netdev[id]->irq = eth->irq[0]; - eth->netdev[id]->dev.of_node = np; - -- eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; -+ if (MTK_HAS_CAPS(eth->soc->caps, MTK_SOC_MT7628)) -+ eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH - MTK_RX_ETH_HLEN; -+ else -+ eth->netdev[id]->max_mtu = MTK_MAX_RX_LENGTH_2K - MTK_RX_ETH_HLEN; - - return 0; - ---- a/drivers/net/ethernet/mediatek/mtk_eth_soc.h -+++ b/drivers/net/ethernet/mediatek/mtk_eth_soc.h -@@ -20,12 +20,13 @@ - #include "mtk_ppe.h" - - #define MTK_QDMA_PAGE_SIZE 2048 --#define MTK_MAX_RX_LENGTH 1536 -+#define MTK_MAX_RX_LENGTH 1536 -+#define MTK_MAX_RX_LENGTH_2K 2048 - #define MTK_TX_DMA_BUF_LEN 0x3fff - #define MTK_DMA_SIZE 512 - #define MTK_NAPI_WEIGHT 64 - #define MTK_MAC_COUNT 2 --#define MTK_RX_ETH_HLEN (VLAN_ETH_HLEN + VLAN_HLEN + ETH_FCS_LEN) -+#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 - #define MTK_DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | \ -@@ -352,7 +353,12 @@ - - /* Mac control registers */ - #define MTK_MAC_MCR(x) (0x10100 + (x * 0x100)) --#define MAC_MCR_MAX_RX_1536 BIT(24) -+#define MAC_MCR_MAX_RX_MASK GENMASK(25, 24) -+#define MAC_MCR_MAX_RX(_x) (MAC_MCR_MAX_RX_MASK & ((_x) << 24)) -+#define MAC_MCR_MAX_RX_1518 0x0 -+#define MAC_MCR_MAX_RX_1536 0x1 -+#define MAC_MCR_MAX_RX_1552 0x2 -+#define MAC_MCR_MAX_RX_2048 0x3 - #define MAC_MCR_IPG_CFG (BIT(18) | BIT(16)) - #define MAC_MCR_FORCE_MODE BIT(15) - #define MAC_MCR_TX_EN BIT(14) |