bcm27xx: add kernel 5.10 support

Rebased RPi foundation patches on linux 5.10.59, removed applied and reverted
patches, wireless patches and defconfig patches.

bcm2708: boot tested on RPi B+ v1.2
bcm2709: boot tested on RPi 4B v1.1 4G
bcm2711: boot tested on RPi 4B v1.1 4G

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

1 files changed, 157 insertions, 0 deletions

diff --git a/target/linux/bcm27xx/patches-5.10/950-0554-r8152-add-help-function-to-change-mtu.patch b/target/linux/bcm27xx/patches-5.10/950-0554-r8152-add-help-function-to-change-mtu.patch
new file mode 100644
index 0000000000..63da9adfd3
--- /dev/null
+++ b/target/linux/bcm27xx/patches-5.10/950-0554-r8152-add-help-function-to-change-mtu.patch
@@ -0,0 +1,157 @@
+From f010a7d51cbb42bdb956f0a28b8868b15d7a3816 Mon Sep 17 00:00:00 2001
+From: Hayes Wang <hayeswang@realtek.com>
+Date: Fri, 16 Apr 2021 16:04:34 +0800
+Subject: [PATCH] r8152: add help function to change mtu
+
+commit 67ce1a806f164e59a074fea8809725d3411eaa20 upstream.
+
+The different chips may have different requests when changing mtu.
+Therefore, add a new help function of rtl_ops to change mtu. Besides,
+reset the tx/rx after changing mtu.
+
+Additionally, add mtu_to_size() and size_to_mtu() macros to simplify
+the code.
+
+Signed-off-by: Hayes Wang <hayeswang@realtek.com>
+Signed-off-by: David S. Miller <davem@davemloft.net>
+---
+ drivers/net/usb/r8152.c | 53 ++++++++++++++++++++++++-----------------
+ 1 file changed, 31 insertions(+), 22 deletions(-)
+
+--- a/drivers/net/usb/r8152.c
++++ b/drivers/net/usb/r8152.c
+@@ -657,15 +657,13 @@ enum rtl_register_content {
+ 
+ #define INTR_LINK		0x0004
+ 
+-#define RTL8153_MAX_PACKET	9216 /* 9K */
+-#define RTL8153_MAX_MTU		(RTL8153_MAX_PACKET - VLAN_ETH_HLEN - \
+-				 ETH_FCS_LEN)
+ #define RTL8152_RMS		(VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
+ #define RTL8153_RMS		RTL8153_MAX_PACKET
+ #define RTL8152_TX_TIMEOUT	(5 * HZ)
+ #define RTL8152_NAPI_WEIGHT	64
+-#define rx_reserved_size(x)	((x) + VLAN_ETH_HLEN + ETH_FCS_LEN + \
+-				 sizeof(struct rx_desc) + RX_ALIGN)
++#define mtu_to_size(m)		((m) + VLAN_ETH_HLEN + ETH_FCS_LEN)
++#define size_to_mtu(s)		((s) - VLAN_ETH_HLEN - ETH_FCS_LEN)
++#define rx_reserved_size(x)	(mtu_to_size(x) + sizeof(struct rx_desc) + RX_ALIGN)
+ 
+ /* rtl8152 flags */
+ enum rtl8152_flags {
+@@ -795,6 +793,7 @@ struct r8152 {
+ 		bool (*in_nway)(struct r8152 *tp);
+ 		void (*hw_phy_cfg)(struct r8152 *tp);
+ 		void (*autosuspend_en)(struct r8152 *tp, bool enable);
++		void (*change_mtu)(struct r8152 *tp);
+ 	} rtl_ops;
+ 
+ 	struct ups_info {
+@@ -1021,8 +1020,7 @@ enum tx_csum_stat {
+ static const int multicast_filter_limit = 32;
+ static unsigned int agg_buf_sz = 16384;
+ 
+-#define RTL_LIMITED_TSO_SIZE	(agg_buf_sz - sizeof(struct tx_desc) - \
+-				 VLAN_ETH_HLEN - ETH_FCS_LEN)
++#define RTL_LIMITED_TSO_SIZE	(size_to_mtu(agg_buf_sz) - sizeof(struct tx_desc))
+ 
+ static
+ int get_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data)
+@@ -2632,10 +2630,7 @@ static void rtl8152_nic_reset(struct r81
+ 
+ static void set_tx_qlen(struct r8152 *tp)
+ {
+-	struct net_device *netdev = tp->netdev;
+-
+-	tp->tx_qlen = agg_buf_sz / (netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN +
+-				    sizeof(struct tx_desc));
++	tp->tx_qlen = agg_buf_sz / (mtu_to_size(tp->netdev->mtu) + sizeof(struct tx_desc));
+ }
+ 
+ static inline u8 rtl8152_get_speed(struct r8152 *tp)
+@@ -4724,6 +4719,12 @@ static void r8153b_hw_phy_cfg(struct r81
+ 	set_bit(PHY_RESET, &tp->flags);
+ }
+ 
++static void rtl8153_change_mtu(struct r8152 *tp)
++{
++	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, mtu_to_size(tp->netdev->mtu));
++	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
++}
++
+ static void r8153_first_init(struct r8152 *tp)
+ {
+ 	u32 ocp_data;
+@@ -4756,9 +4757,7 @@ static void r8153_first_init(struct r815
+ 
+ 	rtl_rx_vlan_en(tp, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);
+ 
+-	ocp_data = tp->netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+-	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, ocp_data);
+-	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
++	rtl8153_change_mtu(tp);
+ 
+ 	ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0);
+ 	ocp_data |= TCR0_AUTO_FIFO;
+@@ -4793,8 +4792,7 @@ static void r8153_enter_oob(struct r8152
+ 
+ 	wait_oob_link_list_ready(tp);
+ 
+-	ocp_data = tp->netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+-	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, ocp_data);
++	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, mtu_to_size(tp->netdev->mtu));
+ 
+ 	switch (tp->version) {
+ 	case RTL_VER_03:
+@@ -6495,12 +6493,21 @@ static int rtl8152_change_mtu(struct net
+ 	dev->mtu = new_mtu;
+ 
+ 	if (netif_running(dev)) {
+-		u32 rms = new_mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
+-
+-		ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, rms);
++		if (tp->rtl_ops.change_mtu)
++			tp->rtl_ops.change_mtu(tp);
+ 
+-		if (netif_carrier_ok(dev))
+-			r8153_set_rx_early_size(tp);
++		if (netif_carrier_ok(dev)) {
++			netif_stop_queue(dev);
++			napi_disable(&tp->napi);
++			tasklet_disable(&tp->tx_tl);
++			tp->rtl_ops.disable(tp);
++			tp->rtl_ops.enable(tp);
++			rtl_start_rx(tp);
++			tasklet_enable(&tp->tx_tl);
++			napi_enable(&tp->napi);
++			rtl8152_set_rx_mode(dev);
++			netif_wake_queue(dev);
++		}
+ 	}
+ 
+ 	mutex_unlock(&tp->control);
+@@ -6589,6 +6596,7 @@ static int rtl_ops_init(struct r8152 *tp
+ 		ops->in_nway		= rtl8153_in_nway;
+ 		ops->hw_phy_cfg		= r8153_hw_phy_cfg;
+ 		ops->autosuspend_en	= rtl8153_runtime_enable;
++		ops->change_mtu		= rtl8153_change_mtu;
+ 		if (tp->udev->speed < USB_SPEED_SUPER)
+ 			tp->rx_buf_sz	= 16 * 1024;
+ 		else
+@@ -6610,6 +6618,7 @@ static int rtl_ops_init(struct r8152 *tp
+ 		ops->in_nway		= rtl8153_in_nway;
+ 		ops->hw_phy_cfg		= r8153b_hw_phy_cfg;
+ 		ops->autosuspend_en	= rtl8153b_runtime_enable;
++		ops->change_mtu		= rtl8153_change_mtu;
+ 		tp->rx_buf_sz		= 32 * 1024;
+ 		tp->eee_en		= true;
+ 		tp->eee_adv		= MDIO_EEE_1000T | MDIO_EEE_100TX;
+@@ -6830,7 +6839,7 @@ static int rtl8152_probe(struct usb_inte
+ 		netdev->max_mtu = ETH_DATA_LEN;
+ 		break;
+ 	default:
+-		netdev->max_mtu = RTL8153_MAX_MTU;
++		netdev->max_mtu = size_to_mtu(9 * 1024);
+ 		break;
+ 	}
+