kernel: backport fixes for realtek r8152

Fixes issues with RTL8156 2.5G USB adapters

- # ethtool eth1
Settings for eth1:
        Supported ports: [ ]
        Supported link modes:   Not reported
        Supported pause frame use: No
        Supports auto-negotiation: No
        Supported FEC modes: Not reported
        Advertised link modes:  Not reported
        Advertised pause frame use: No
        Advertised auto-negotiation: No
        Advertised FEC modes: Not reported
        Speed: 2500Mb/s
        Duplex: Half
        Port: Twisted Pair
        PHYAD: 0
        Transceiver: internal
        Auto-negotiation: off
        MDI-X: Unknown
        Current message level: 0x00000007 (7)
                               drv probe link
        Link detected: yes
- #

- r8152: break the loop when the budget is exhausted
- r8152: Block future register access if register access fails
- r8152: Rename RTL8152_UNPLUG to RTL8152_INACCESSIBLE
- r8152: add vendor/device ID pair for D-Link DUB-E250
- r8152: try to use a normal budget
- r8152: set bp in bulk
- r8152: adjust generic_ocp_write function
- r8152: fix the autosuspend doesn't work
- r8152: Add __GFP_NOWARN to big allocations
- r8152: reduce the control transfer of rtl8152_get_version()
- r8152: remove rtl_vendor_mode function
- r8152: avoid to change cfg for all devices
- r8152: add USB device driver for config selection
- r8152: use napi_gro_frags
- cdc_ether: no need to blacklist any r8152 devices
- cdc_ether: add u-blox 0x1313 composition

Build system: x86_64
Build-tested: bcm2711, rockchip, x86/64
Run-tested: bcm2711/RPi4B, rockchip/nanopi r2s, x86/64

Signed-off-by: Marty Jones <mj8263788@gmail.com>

1 files changed, 129 insertions, 0 deletions

diff --git a/target/linux/generic/backport-5.15/795-v6.6-09-r8152-set-bp-in-bulk.patch b/target/linux/generic/backport-5.15/795-v6.6-09-r8152-set-bp-in-bulk.patch
new file mode 100644
index 0000000000..cfc31daf12
--- /dev/null
+++ b/target/linux/generic/backport-5.15/795-v6.6-09-r8152-set-bp-in-bulk.patch
@@ -0,0 +1,129 @@
+From e5c266a61186b462c388c53a3564c375e72f2244 Mon Sep 17 00:00:00 2001
+From: Hayes Wang <hayeswang@realtek.com>
+Date: Wed, 26 Jul 2023 11:08:08 +0800
+Subject: [PATCH] r8152: set bp in bulk
+
+PLA_BP_0 ~ PLA_BP_15 (0xfc28 ~ 0xfc46) are continuous registers, so we
+could combine the control transfers into one control transfer.
+
+Signed-off-by: Hayes Wang <hayeswang@realtek.com>
+Link: https://lore.kernel.org/r/20230726030808.9093-419-nic_swsd@realtek.com
+Signed-off-by: Jakub Kicinski <kuba@kernel.org>
+---
+ drivers/net/usb/r8152.c | 75 ++++++++++++++---------------------------
+ 1 file changed, 25 insertions(+), 50 deletions(-)
+
+--- a/drivers/net/usb/r8152.c
++++ b/drivers/net/usb/r8152.c
+@@ -3977,29 +3977,10 @@ static void rtl_reset_bmu(struct r8152 *
+ /* Clear the bp to stop the firmware before loading a new one */
+ static void rtl_clear_bp(struct r8152 *tp, u16 type)
+ {
+-	switch (tp->version) {
+-	case RTL_VER_01:
+-	case RTL_VER_02:
+-	case RTL_VER_07:
+-		break;
+-	case RTL_VER_03:
+-	case RTL_VER_04:
+-	case RTL_VER_05:
+-	case RTL_VER_06:
+-		ocp_write_byte(tp, type, PLA_BP_EN, 0);
+-		break;
+-	case RTL_VER_14:
+-		ocp_write_word(tp, type, USB_BP2_EN, 0);
++	u16 bp[16] = {0};
++	u16 bp_num;
+ 
+-		ocp_write_word(tp, type, USB_BP_8, 0);
+-		ocp_write_word(tp, type, USB_BP_9, 0);
+-		ocp_write_word(tp, type, USB_BP_10, 0);
+-		ocp_write_word(tp, type, USB_BP_11, 0);
+-		ocp_write_word(tp, type, USB_BP_12, 0);
+-		ocp_write_word(tp, type, USB_BP_13, 0);
+-		ocp_write_word(tp, type, USB_BP_14, 0);
+-		ocp_write_word(tp, type, USB_BP_15, 0);
+-		break;
++	switch (tp->version) {
+ 	case RTL_VER_08:
+ 	case RTL_VER_09:
+ 	case RTL_VER_10:
+@@ -4007,32 +3988,31 @@ static void rtl_clear_bp(struct r8152 *t
+ 	case RTL_VER_12:
+ 	case RTL_VER_13:
+ 	case RTL_VER_15:
+-	default:
+ 		if (type == MCU_TYPE_USB) {
+ 			ocp_write_word(tp, MCU_TYPE_USB, USB_BP2_EN, 0);
+-
+-			ocp_write_word(tp, MCU_TYPE_USB, USB_BP_8, 0);
+-			ocp_write_word(tp, MCU_TYPE_USB, USB_BP_9, 0);
+-			ocp_write_word(tp, MCU_TYPE_USB, USB_BP_10, 0);
+-			ocp_write_word(tp, MCU_TYPE_USB, USB_BP_11, 0);
+-			ocp_write_word(tp, MCU_TYPE_USB, USB_BP_12, 0);
+-			ocp_write_word(tp, MCU_TYPE_USB, USB_BP_13, 0);
+-			ocp_write_word(tp, MCU_TYPE_USB, USB_BP_14, 0);
+-			ocp_write_word(tp, MCU_TYPE_USB, USB_BP_15, 0);
+-		} else {
+-			ocp_write_byte(tp, MCU_TYPE_PLA, PLA_BP_EN, 0);
++			bp_num = 16;
++			break;
+ 		}
++		fallthrough;
++	case RTL_VER_03:
++	case RTL_VER_04:
++	case RTL_VER_05:
++	case RTL_VER_06:
++		ocp_write_byte(tp, type, PLA_BP_EN, 0);
++		fallthrough;
++	case RTL_VER_01:
++	case RTL_VER_02:
++	case RTL_VER_07:
++		bp_num = 8;
++		break;
++	case RTL_VER_14:
++	default:
++		ocp_write_word(tp, type, USB_BP2_EN, 0);
++		bp_num = 16;
+ 		break;
+ 	}
+ 
+-	ocp_write_word(tp, type, PLA_BP_0, 0);
+-	ocp_write_word(tp, type, PLA_BP_1, 0);
+-	ocp_write_word(tp, type, PLA_BP_2, 0);
+-	ocp_write_word(tp, type, PLA_BP_3, 0);
+-	ocp_write_word(tp, type, PLA_BP_4, 0);
+-	ocp_write_word(tp, type, PLA_BP_5, 0);
+-	ocp_write_word(tp, type, PLA_BP_6, 0);
+-	ocp_write_word(tp, type, PLA_BP_7, 0);
++	generic_ocp_write(tp, PLA_BP_0, BYTE_EN_DWORD, bp_num << 1, bp, type);
+ 
+ 	/* wait 3 ms to make sure the firmware is stopped */
+ 	usleep_range(3000, 6000);
+@@ -5009,10 +4989,9 @@ static void rtl8152_fw_phy_nc_apply(stru
+ 
+ static void rtl8152_fw_mac_apply(struct r8152 *tp, struct fw_mac *mac)
+ {
+-	u16 bp_en_addr, bp_index, type, bp_num, fw_ver_reg;
++	u16 bp_en_addr, type, fw_ver_reg;
+ 	u32 length;
+ 	u8 *data;
+-	int i;
+ 
+ 	switch (__le32_to_cpu(mac->blk_hdr.type)) {
+ 	case RTL_FW_PLA:
+@@ -5054,12 +5033,8 @@ static void rtl8152_fw_mac_apply(struct
+ 	ocp_write_word(tp, type, __le16_to_cpu(mac->bp_ba_addr),
+ 		       __le16_to_cpu(mac->bp_ba_value));
+ 
+-	bp_index = __le16_to_cpu(mac->bp_start);
+-	bp_num = __le16_to_cpu(mac->bp_num);
+-	for (i = 0; i < bp_num; i++) {
+-		ocp_write_word(tp, type, bp_index, __le16_to_cpu(mac->bp[i]));
+-		bp_index += 2;
+-	}
++	generic_ocp_write(tp, __le16_to_cpu(mac->bp_start), BYTE_EN_DWORD,
++			  __le16_to_cpu(mac->bp_num) << 1, mac->bp, type);
+ 
+ 	bp_en_addr = __le16_to_cpu(mac->bp_en_addr);
+ 	if (bp_en_addr)