r8152: fix a WOL issue

This fixes that the platform is waked by an unexpected packet. The
size and range of FIFO is different when the device enters S3 state,
so it is necessary to correct some settings when suspending.

Regardless of jumbo frame, set RMS to 1522 and MTPS to MTPS_DEFAULT.
Besides, enable MCU_BORW_EN to update the method of calculating the
pointer of data. Then, the hardware could get the correct data.

Fixes: 4f086ebc8ece ("r8152: support new chips")
Signed-off-by: Hayes Wang <hayeswang@realtek.com>
Link: https://lore.kernel.org/r/20220718082120.10957-391-nic_swsd@realtek.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

diff --git a/drivers/net/usb/r8152.c b/drivers/net/usb/r8152.c
index b082819509e10dc6339d08e18c4c8044eba9bb6c..0f6efaabaa32b892ccb57355bb9db3941ec216ec 100644 (file)
--- a/drivers/net/usb/r8152.c
+++ b/drivers/net/usb/r8152.c
@@ -32,7 +32,7 @@
 #define NETNEXT_VERSION                "12"
 
 /* Information for net */
-#define NET_VERSION            "12"
+#define NET_VERSION            "13"
 
 #define DRIVER_VERSION         "v1." NETNEXT_VERSION "." NET_VERSION
 #define DRIVER_AUTHOR "Realtek linux nic maintainers <nic_swsd@realtek.com>"
@@ -5917,7 +5917,8 @@ static void r8153_enter_oob(struct r8152 *tp)
 
        wait_oob_link_list_ready(tp);
 
-       ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, mtu_to_size(tp->netdev->mtu));
+       ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, 1522);
+       ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_DEFAULT);
 
        switch (tp->version) {
        case RTL_VER_03:
@@ -5953,6 +5954,10 @@ static void r8153_enter_oob(struct r8152 *tp)
        ocp_data |= NOW_IS_OOB | DIS_MCU_CLROOB;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);
 
+       ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7);
+       ocp_data |= MCU_BORW_EN;
+       ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data);
+
        rxdy_gated_en(tp, false);
 
        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
@@ -6555,6 +6560,9 @@ static void rtl8156_down(struct r8152 *tp)
        rtl_disable(tp);
        rtl_reset_bmu(tp);
 
+       ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, 1522);
+       ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_DEFAULT);
+
        /* Clear teredo wake event. bit[15:8] is the teredo wakeup
         * type. Set it to zero. bits[7:0] are the W1C bits about
         * the events. Set them to all 1 to clear them.
@@ -6565,6 +6573,10 @@ static void rtl8156_down(struct r8152 *tp)
        ocp_data |= NOW_IS_OOB;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);
 
+       ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7);
+       ocp_data |= MCU_BORW_EN;
+       ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data);
+
        rtl_rx_vlan_en(tp, true);
        rxdy_gated_en(tp, false);