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8299d1f057
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>
158 lines
5.2 KiB
Diff
158 lines
5.2 KiB
Diff
From f010a7d51cbb42bdb956f0a28b8868b15d7a3816 Mon Sep 17 00:00:00 2001
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From: Hayes Wang <hayeswang@realtek.com>
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Date: Fri, 16 Apr 2021 16:04:34 +0800
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Subject: [PATCH] r8152: add help function to change mtu
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commit 67ce1a806f164e59a074fea8809725d3411eaa20 upstream.
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The different chips may have different requests when changing mtu.
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Therefore, add a new help function of rtl_ops to change mtu. Besides,
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reset the tx/rx after changing mtu.
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Additionally, add mtu_to_size() and size_to_mtu() macros to simplify
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the code.
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Signed-off-by: Hayes Wang <hayeswang@realtek.com>
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Signed-off-by: David S. Miller <davem@davemloft.net>
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---
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drivers/net/usb/r8152.c | 53 ++++++++++++++++++++++++-----------------
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1 file changed, 31 insertions(+), 22 deletions(-)
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--- a/drivers/net/usb/r8152.c
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+++ b/drivers/net/usb/r8152.c
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@@ -657,15 +657,13 @@ enum rtl_register_content {
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#define INTR_LINK 0x0004
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-#define RTL8153_MAX_PACKET 9216 /* 9K */
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-#define RTL8153_MAX_MTU (RTL8153_MAX_PACKET - VLAN_ETH_HLEN - \
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- ETH_FCS_LEN)
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#define RTL8152_RMS (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
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#define RTL8153_RMS RTL8153_MAX_PACKET
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#define RTL8152_TX_TIMEOUT (5 * HZ)
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#define RTL8152_NAPI_WEIGHT 64
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-#define rx_reserved_size(x) ((x) + VLAN_ETH_HLEN + ETH_FCS_LEN + \
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- sizeof(struct rx_desc) + RX_ALIGN)
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+#define mtu_to_size(m) ((m) + VLAN_ETH_HLEN + ETH_FCS_LEN)
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+#define size_to_mtu(s) ((s) - VLAN_ETH_HLEN - ETH_FCS_LEN)
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+#define rx_reserved_size(x) (mtu_to_size(x) + sizeof(struct rx_desc) + RX_ALIGN)
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/* rtl8152 flags */
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enum rtl8152_flags {
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@@ -795,6 +793,7 @@ struct r8152 {
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bool (*in_nway)(struct r8152 *tp);
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void (*hw_phy_cfg)(struct r8152 *tp);
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void (*autosuspend_en)(struct r8152 *tp, bool enable);
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+ void (*change_mtu)(struct r8152 *tp);
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} rtl_ops;
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struct ups_info {
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@@ -1021,8 +1020,7 @@ enum tx_csum_stat {
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static const int multicast_filter_limit = 32;
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static unsigned int agg_buf_sz = 16384;
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-#define RTL_LIMITED_TSO_SIZE (agg_buf_sz - sizeof(struct tx_desc) - \
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- VLAN_ETH_HLEN - ETH_FCS_LEN)
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+#define RTL_LIMITED_TSO_SIZE (size_to_mtu(agg_buf_sz) - sizeof(struct tx_desc))
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static
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int get_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data)
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@@ -2632,10 +2630,7 @@ static void rtl8152_nic_reset(struct r81
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static void set_tx_qlen(struct r8152 *tp)
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{
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- struct net_device *netdev = tp->netdev;
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-
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- tp->tx_qlen = agg_buf_sz / (netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN +
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- sizeof(struct tx_desc));
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+ tp->tx_qlen = agg_buf_sz / (mtu_to_size(tp->netdev->mtu) + sizeof(struct tx_desc));
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}
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static inline u8 rtl8152_get_speed(struct r8152 *tp)
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@@ -4724,6 +4719,12 @@ static void r8153b_hw_phy_cfg(struct r81
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set_bit(PHY_RESET, &tp->flags);
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}
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+static void rtl8153_change_mtu(struct r8152 *tp)
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+{
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+ ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, mtu_to_size(tp->netdev->mtu));
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+ ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
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+}
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+
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static void r8153_first_init(struct r8152 *tp)
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{
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u32 ocp_data;
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@@ -4756,9 +4757,7 @@ static void r8153_first_init(struct r815
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rtl_rx_vlan_en(tp, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);
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- ocp_data = tp->netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
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- ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, ocp_data);
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- ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
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+ rtl8153_change_mtu(tp);
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ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0);
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ocp_data |= TCR0_AUTO_FIFO;
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@@ -4793,8 +4792,7 @@ static void r8153_enter_oob(struct r8152
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wait_oob_link_list_ready(tp);
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- ocp_data = tp->netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
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- ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, ocp_data);
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+ ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, mtu_to_size(tp->netdev->mtu));
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switch (tp->version) {
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case RTL_VER_03:
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@@ -6495,12 +6493,21 @@ static int rtl8152_change_mtu(struct net
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dev->mtu = new_mtu;
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if (netif_running(dev)) {
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- u32 rms = new_mtu + VLAN_ETH_HLEN + ETH_FCS_LEN;
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-
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- ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, rms);
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+ if (tp->rtl_ops.change_mtu)
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+ tp->rtl_ops.change_mtu(tp);
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- if (netif_carrier_ok(dev))
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- r8153_set_rx_early_size(tp);
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+ if (netif_carrier_ok(dev)) {
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+ netif_stop_queue(dev);
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+ napi_disable(&tp->napi);
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+ tasklet_disable(&tp->tx_tl);
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+ tp->rtl_ops.disable(tp);
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+ tp->rtl_ops.enable(tp);
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+ rtl_start_rx(tp);
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+ tasklet_enable(&tp->tx_tl);
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+ napi_enable(&tp->napi);
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+ rtl8152_set_rx_mode(dev);
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+ netif_wake_queue(dev);
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+ }
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}
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mutex_unlock(&tp->control);
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@@ -6589,6 +6596,7 @@ static int rtl_ops_init(struct r8152 *tp
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ops->in_nway = rtl8153_in_nway;
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ops->hw_phy_cfg = r8153_hw_phy_cfg;
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ops->autosuspend_en = rtl8153_runtime_enable;
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+ ops->change_mtu = rtl8153_change_mtu;
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if (tp->udev->speed < USB_SPEED_SUPER)
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tp->rx_buf_sz = 16 * 1024;
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else
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@@ -6610,6 +6618,7 @@ static int rtl_ops_init(struct r8152 *tp
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ops->in_nway = rtl8153_in_nway;
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ops->hw_phy_cfg = r8153b_hw_phy_cfg;
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ops->autosuspend_en = rtl8153b_runtime_enable;
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+ ops->change_mtu = rtl8153_change_mtu;
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tp->rx_buf_sz = 32 * 1024;
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tp->eee_en = true;
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tp->eee_adv = MDIO_EEE_1000T | MDIO_EEE_100TX;
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@@ -6830,7 +6839,7 @@ static int rtl8152_probe(struct usb_inte
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netdev->max_mtu = ETH_DATA_LEN;
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break;
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default:
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- netdev->max_mtu = RTL8153_MAX_MTU;
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+ netdev->max_mtu = size_to_mtu(9 * 1024);
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break;
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}
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