Merge tag 'vfs-6.13-rc7.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs

[J-linux.git] / drivers / net / usb / r8152.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 *  Copyright (c) 2014 Realtek Semiconductor Corp. All rights reserved.
 */

#include <linux/signal.h>
#include <linux/slab.h>
#include <linux/module.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/mii.h>
#include <linux/ethtool.h>
#include <linux/phy.h>
#include <linux/usb.h>
#include <linux/crc32.h>
#include <linux/if_vlan.h>
#include <linux/uaccess.h>
#include <linux/list.h>
#include <linux/ip.h>
#include <linux/ipv6.h>
#include <net/ip6_checksum.h>
#include <uapi/linux/mdio.h>
#include <linux/mdio.h>
#include <linux/usb/cdc.h>
#include <linux/suspend.h>
#include <linux/atomic.h>
#include <linux/acpi.h>
#include <linux/firmware.h>
#include <crypto/hash.h>
#include <linux/usb/r8152.h>
#include <net/gso.h>

/* Information for net-next */
#define NETNEXT_VERSION         "12"

/* Information for net */
#define NET_VERSION             "13"

#define DRIVER_VERSION          "v1." NETNEXT_VERSION "." NET_VERSION
#define DRIVER_AUTHOR "Realtek linux nic maintainers <[email protected]>"
#define DRIVER_DESC "Realtek RTL8152/RTL8153 Based USB Ethernet Adapters"
#define MODULENAME "r8152"

#define R8152_PHY_ID            32

#define PLA_IDR                 0xc000
#define PLA_RCR                 0xc010
#define PLA_RCR1                0xc012
#define PLA_RMS                 0xc016
#define PLA_RXFIFO_CTRL0        0xc0a0
#define PLA_RXFIFO_FULL         0xc0a2
#define PLA_RXFIFO_CTRL1        0xc0a4
#define PLA_RX_FIFO_FULL        0xc0a6
#define PLA_RXFIFO_CTRL2        0xc0a8
#define PLA_RX_FIFO_EMPTY       0xc0aa
#define PLA_DMY_REG0            0xc0b0
#define PLA_FMC                 0xc0b4
#define PLA_CFG_WOL             0xc0b6
#define PLA_TEREDO_CFG          0xc0bc
#define PLA_TEREDO_WAKE_BASE    0xc0c4
#define PLA_MAR                 0xcd00
#define PLA_BACKUP              0xd000
#define PLA_BDC_CR              0xd1a0
#define PLA_TEREDO_TIMER        0xd2cc
#define PLA_REALWOW_TIMER       0xd2e8
#define PLA_UPHY_TIMER          0xd388
#define PLA_SUSPEND_FLAG        0xd38a
#define PLA_INDICATE_FALG       0xd38c
#define PLA_MACDBG_PRE          0xd38c  /* RTL_VER_04 only */
#define PLA_MACDBG_POST         0xd38e  /* RTL_VER_04 only */
#define PLA_EXTRA_STATUS        0xd398
#define PLA_GPHY_CTRL           0xd3ae
#define PLA_POL_GPIO_CTRL       0xdc6a
#define PLA_EFUSE_DATA          0xdd00
#define PLA_EFUSE_CMD           0xdd02
#define PLA_LEDSEL              0xdd90
#define PLA_LED_FEATURE         0xdd92
#define PLA_PHYAR               0xde00
#define PLA_BOOT_CTRL           0xe004
#define PLA_LWAKE_CTRL_REG      0xe007
#define PLA_GPHY_INTR_IMR       0xe022
#define PLA_EEE_CR              0xe040
#define PLA_EEE_TXTWSYS         0xe04c
#define PLA_EEE_TXTWSYS_2P5G    0xe058
#define PLA_EEEP_CR             0xe080
#define PLA_MAC_PWR_CTRL        0xe0c0
#define PLA_MAC_PWR_CTRL2       0xe0ca
#define PLA_MAC_PWR_CTRL3       0xe0cc
#define PLA_MAC_PWR_CTRL4       0xe0ce
#define PLA_WDT6_CTRL           0xe428
#define PLA_TCR0                0xe610
#define PLA_TCR1                0xe612
#define PLA_MTPS                0xe615
#define PLA_TXFIFO_CTRL         0xe618
#define PLA_TXFIFO_FULL         0xe61a
#define PLA_RSTTALLY            0xe800
#define PLA_CR                  0xe813
#define PLA_CRWECR              0xe81c
#define PLA_CONFIG12            0xe81e  /* CONFIG1, CONFIG2 */
#define PLA_CONFIG34            0xe820  /* CONFIG3, CONFIG4 */
#define PLA_CONFIG5             0xe822
#define PLA_PHY_PWR             0xe84c
#define PLA_OOB_CTRL            0xe84f
#define PLA_CPCR                0xe854
#define PLA_MISC_0              0xe858
#define PLA_MISC_1              0xe85a
#define PLA_OCP_GPHY_BASE       0xe86c
#define PLA_TALLYCNT            0xe890
#define PLA_SFF_STS_7           0xe8de
#define PLA_PHYSTATUS           0xe908
#define PLA_CONFIG6             0xe90a /* CONFIG6 */
#define PLA_USB_CFG             0xe952
#define PLA_BP_BA               0xfc26
#define PLA_BP_0                0xfc28
#define PLA_BP_1                0xfc2a
#define PLA_BP_2                0xfc2c
#define PLA_BP_3                0xfc2e
#define PLA_BP_4                0xfc30
#define PLA_BP_5                0xfc32
#define PLA_BP_6                0xfc34
#define PLA_BP_7                0xfc36
#define PLA_BP_EN               0xfc38

#define USB_USB2PHY             0xb41e
#define USB_SSPHYLINK1          0xb426
#define USB_SSPHYLINK2          0xb428
#define USB_L1_CTRL             0xb45e
#define USB_U2P3_CTRL           0xb460
#define USB_CSR_DUMMY1          0xb464
#define USB_CSR_DUMMY2          0xb466
#define USB_DEV_STAT            0xb808
#define USB_CONNECT_TIMER       0xcbf8
#define USB_MSC_TIMER           0xcbfc
#define USB_BURST_SIZE          0xcfc0
#define USB_FW_FIX_EN0          0xcfca
#define USB_FW_FIX_EN1          0xcfcc
#define USB_LPM_CONFIG          0xcfd8
#define USB_ECM_OPTION          0xcfee
#define USB_CSTMR               0xcfef  /* RTL8153A */
#define USB_MISC_2              0xcfff
#define USB_ECM_OP              0xd26b
#define USB_GPHY_CTRL           0xd284
#define USB_SPEED_OPTION        0xd32a
#define USB_FW_CTRL             0xd334  /* RTL8153B */
#define USB_FC_TIMER            0xd340
#define USB_USB_CTRL            0xd406
#define USB_PHY_CTRL            0xd408
#define USB_TX_AGG              0xd40a
#define USB_RX_BUF_TH           0xd40c
#define USB_USB_TIMER           0xd428
#define USB_RX_EARLY_TIMEOUT    0xd42c
#define USB_RX_EARLY_SIZE       0xd42e
#define USB_PM_CTRL_STATUS      0xd432  /* RTL8153A */
#define USB_RX_EXTRA_AGGR_TMR   0xd432  /* RTL8153B */
#define USB_TX_DMA              0xd434
#define USB_UPT_RXDMA_OWN       0xd437
#define USB_UPHY3_MDCMDIO       0xd480
#define USB_TOLERANCE           0xd490
#define USB_LPM_CTRL            0xd41a
#define USB_BMU_RESET           0xd4b0
#define USB_BMU_CONFIG          0xd4b4
#define USB_U1U2_TIMER          0xd4da
#define USB_FW_TASK             0xd4e8  /* RTL8153B */
#define USB_RX_AGGR_NUM         0xd4ee
#define USB_UPS_CTRL            0xd800
#define USB_POWER_CUT           0xd80a
#define USB_MISC_0              0xd81a
#define USB_MISC_1              0xd81f
#define USB_AFE_CTRL2           0xd824
#define USB_UPHY_XTAL           0xd826
#define USB_UPS_CFG             0xd842
#define USB_UPS_FLAGS           0xd848
#define USB_WDT1_CTRL           0xe404
#define USB_WDT11_CTRL          0xe43c
#define USB_BP_BA               PLA_BP_BA
#define USB_BP_0                PLA_BP_0
#define USB_BP_1                PLA_BP_1
#define USB_BP_2                PLA_BP_2
#define USB_BP_3                PLA_BP_3
#define USB_BP_4                PLA_BP_4
#define USB_BP_5                PLA_BP_5
#define USB_BP_6                PLA_BP_6
#define USB_BP_7                PLA_BP_7
#define USB_BP_EN               PLA_BP_EN       /* RTL8153A */
#define USB_BP_8                0xfc38          /* RTL8153B */
#define USB_BP_9                0xfc3a
#define USB_BP_10               0xfc3c
#define USB_BP_11               0xfc3e
#define USB_BP_12               0xfc40
#define USB_BP_13               0xfc42
#define USB_BP_14               0xfc44
#define USB_BP_15               0xfc46
#define USB_BP2_EN              0xfc48

/* OCP Registers */
#define OCP_ALDPS_CONFIG        0x2010
#define OCP_EEE_CONFIG1         0x2080
#define OCP_EEE_CONFIG2         0x2092
#define OCP_EEE_CONFIG3         0x2094
#define OCP_BASE_MII            0xa400
#define OCP_EEE_AR              0xa41a
#define OCP_EEE_DATA            0xa41c
#define OCP_PHY_STATUS          0xa420
#define OCP_INTR_EN             0xa424
#define OCP_NCTL_CFG            0xa42c
#define OCP_POWER_CFG           0xa430
#define OCP_EEE_CFG             0xa432
#define OCP_SRAM_ADDR           0xa436
#define OCP_SRAM_DATA           0xa438
#define OCP_DOWN_SPEED          0xa442
#define OCP_EEE_ABLE            0xa5c4
#define OCP_EEE_ADV             0xa5d0
#define OCP_EEE_LPABLE          0xa5d2
#define OCP_10GBT_CTRL          0xa5d4
#define OCP_10GBT_STAT          0xa5d6
#define OCP_EEE_ADV2            0xa6d4
#define OCP_PHY_STATE           0xa708          /* nway state for 8153 */
#define OCP_PHY_PATCH_STAT      0xb800
#define OCP_PHY_PATCH_CMD       0xb820
#define OCP_PHY_LOCK            0xb82e
#define OCP_ADC_IOFFSET         0xbcfc
#define OCP_ADC_CFG             0xbc06
#define OCP_SYSCLK_CFG          0xc416

/* SRAM Register */
#define SRAM_GREEN_CFG          0x8011
#define SRAM_LPF_CFG            0x8012
#define SRAM_GPHY_FW_VER        0x801e
#define SRAM_10M_AMP1           0x8080
#define SRAM_10M_AMP2           0x8082
#define SRAM_IMPEDANCE          0x8084
#define SRAM_PHY_LOCK           0xb82e

/* PLA_RCR */
#define RCR_AAP                 0x00000001
#define RCR_APM                 0x00000002
#define RCR_AM                  0x00000004
#define RCR_AB                  0x00000008
#define RCR_ACPT_ALL            (RCR_AAP | RCR_APM | RCR_AM | RCR_AB)
#define SLOT_EN                 BIT(11)

/* PLA_RCR1 */
#define OUTER_VLAN              BIT(7)
#define INNER_VLAN              BIT(6)

/* PLA_RXFIFO_CTRL0 */
#define RXFIFO_THR1_NORMAL      0x00080002
#define RXFIFO_THR1_OOB         0x01800003

/* PLA_RXFIFO_FULL */
#define RXFIFO_FULL_MASK        0xfff

/* PLA_RXFIFO_CTRL1 */
#define RXFIFO_THR2_FULL        0x00000060
#define RXFIFO_THR2_HIGH        0x00000038
#define RXFIFO_THR2_OOB         0x0000004a
#define RXFIFO_THR2_NORMAL      0x00a0

/* PLA_RXFIFO_CTRL2 */
#define RXFIFO_THR3_FULL        0x00000078
#define RXFIFO_THR3_HIGH        0x00000048
#define RXFIFO_THR3_OOB         0x0000005a
#define RXFIFO_THR3_NORMAL      0x0110

/* PLA_TXFIFO_CTRL */
#define TXFIFO_THR_NORMAL       0x00400008
#define TXFIFO_THR_NORMAL2      0x01000008

/* PLA_DMY_REG0 */
#define ECM_ALDPS               0x0002

/* PLA_FMC */
#define FMC_FCR_MCU_EN          0x0001

/* PLA_EEEP_CR */
#define EEEP_CR_EEEP_TX         0x0002

/* PLA_WDT6_CTRL */
#define WDT6_SET_MODE           0x0010

/* PLA_TCR0 */
#define TCR0_TX_EMPTY           0x0800
#define TCR0_AUTO_FIFO          0x0080

/* PLA_TCR1 */
#define VERSION_MASK            0x7cf0
#define IFG_MASK                (BIT(3) | BIT(9) | BIT(8))
#define IFG_144NS               BIT(9)
#define IFG_96NS                (BIT(9) | BIT(8))

/* PLA_MTPS */
#define MTPS_JUMBO              (12 * 1024 / 64)
#define MTPS_DEFAULT            (6 * 1024 / 64)

/* PLA_RSTTALLY */
#define TALLY_RESET             0x0001

/* PLA_CR */
#define CR_RST                  0x10
#define CR_RE                   0x08
#define CR_TE                   0x04

/* PLA_CRWECR */
#define CRWECR_NORAML           0x00
#define CRWECR_CONFIG           0xc0

/* PLA_OOB_CTRL */
#define NOW_IS_OOB              0x80
#define TXFIFO_EMPTY            0x20
#define RXFIFO_EMPTY            0x10
#define LINK_LIST_READY         0x02
#define DIS_MCU_CLROOB          0x01
#define FIFO_EMPTY              (TXFIFO_EMPTY | RXFIFO_EMPTY)

/* PLA_MISC_1 */
#define RXDY_GATED_EN           0x0008

/* PLA_SFF_STS_7 */
#define RE_INIT_LL              0x8000
#define MCU_BORW_EN             0x4000

/* PLA_CPCR */
#define FLOW_CTRL_EN            BIT(0)
#define CPCR_RX_VLAN            0x0040

/* PLA_CFG_WOL */
#define MAGIC_EN                0x0001

/* PLA_TEREDO_CFG */
#define TEREDO_SEL              0x8000
#define TEREDO_WAKE_MASK        0x7f00
#define TEREDO_RS_EVENT_MASK    0x00fe
#define OOB_TEREDO_EN           0x0001

/* PLA_BDC_CR */
#define ALDPS_PROXY_MODE        0x0001

/* PLA_EFUSE_CMD */
#define EFUSE_READ_CMD          BIT(15)
#define EFUSE_DATA_BIT16        BIT(7)

/* PLA_CONFIG34 */
#define LINK_ON_WAKE_EN         0x0010
#define LINK_OFF_WAKE_EN        0x0008

/* PLA_CONFIG6 */
#define LANWAKE_CLR_EN          BIT(0)

/* PLA_USB_CFG */
#define EN_XG_LIP               BIT(1)
#define EN_G_LIP                BIT(2)

/* PLA_CONFIG5 */
#define BWF_EN                  0x0040
#define MWF_EN                  0x0020
#define UWF_EN                  0x0010
#define LAN_WAKE_EN             0x0002

/* PLA_LED_FEATURE */
#define LED_MODE_MASK           0x0700

/* PLA_PHY_PWR */
#define TX_10M_IDLE_EN          0x0080
#define PFM_PWM_SWITCH          0x0040
#define TEST_IO_OFF             BIT(4)

/* PLA_MAC_PWR_CTRL */
#define D3_CLK_GATED_EN         0x00004000
#define MCU_CLK_RATIO           0x07010f07
#define MCU_CLK_RATIO_MASK      0x0f0f0f0f
#define ALDPS_SPDWN_RATIO       0x0f87

/* PLA_MAC_PWR_CTRL2 */
#define EEE_SPDWN_RATIO         0x8007
#define MAC_CLK_SPDWN_EN        BIT(15)
#define EEE_SPDWN_RATIO_MASK    0xff

/* PLA_MAC_PWR_CTRL3 */
#define PLA_MCU_SPDWN_EN        BIT(14)
#define PKT_AVAIL_SPDWN_EN      0x0100
#define SUSPEND_SPDWN_EN        0x0004
#define U1U2_SPDWN_EN           0x0002
#define L1_SPDWN_EN             0x0001

/* PLA_MAC_PWR_CTRL4 */
#define PWRSAVE_SPDWN_EN        0x1000
#define RXDV_SPDWN_EN           0x0800
#define TX10MIDLE_EN            0x0100
#define IDLE_SPDWN_EN           BIT(6)
#define TP100_SPDWN_EN          0x0020
#define TP500_SPDWN_EN          0x0010
#define TP1000_SPDWN_EN         0x0008
#define EEE_SPDWN_EN            0x0001

/* PLA_GPHY_INTR_IMR */
#define GPHY_STS_MSK            0x0001
#define SPEED_DOWN_MSK          0x0002
#define SPDWN_RXDV_MSK          0x0004
#define SPDWN_LINKCHG_MSK       0x0008

/* PLA_PHYAR */
#define PHYAR_FLAG              0x80000000

/* PLA_EEE_CR */
#define EEE_RX_EN               0x0001
#define EEE_TX_EN               0x0002

/* PLA_BOOT_CTRL */
#define AUTOLOAD_DONE           0x0002

/* PLA_LWAKE_CTRL_REG */
#define LANWAKE_PIN             BIT(7)

/* PLA_SUSPEND_FLAG */
#define LINK_CHG_EVENT          BIT(0)

/* PLA_INDICATE_FALG */
#define UPCOMING_RUNTIME_D3     BIT(0)

/* PLA_MACDBG_PRE and PLA_MACDBG_POST */
#define DEBUG_OE                BIT(0)
#define DEBUG_LTSSM             0x0082

/* PLA_EXTRA_STATUS */
#define CUR_LINK_OK             BIT(15)
#define U3P3_CHECK_EN           BIT(7)  /* RTL_VER_05 only */
#define LINK_CHANGE_FLAG        BIT(8)
#define POLL_LINK_CHG           BIT(0)

/* PLA_GPHY_CTRL */
#define GPHY_FLASH              BIT(1)

/* PLA_POL_GPIO_CTRL */
#define DACK_DET_EN             BIT(15)
#define POL_GPHY_PATCH          BIT(4)

/* USB_USB2PHY */
#define USB2PHY_SUSPEND         0x0001
#define USB2PHY_L1              0x0002

/* USB_SSPHYLINK1 */
#define DELAY_PHY_PWR_CHG       BIT(1)

/* USB_SSPHYLINK2 */
#define pwd_dn_scale_mask       0x3ffe
#define pwd_dn_scale(x)         ((x) << 1)

/* USB_CSR_DUMMY1 */
#define DYNAMIC_BURST           0x0001

/* USB_CSR_DUMMY2 */
#define EP4_FULL_FC             0x0001

/* USB_DEV_STAT */
#define STAT_SPEED_MASK         0x0006
#define STAT_SPEED_HIGH         0x0000
#define STAT_SPEED_FULL         0x0002

/* USB_FW_FIX_EN0 */
#define FW_FIX_SUSPEND          BIT(14)

/* USB_FW_FIX_EN1 */
#define FW_IP_RESET_EN          BIT(9)

/* USB_LPM_CONFIG */
#define LPM_U1U2_EN             BIT(0)

/* USB_TX_AGG */
#define TX_AGG_MAX_THRESHOLD    0x03

/* USB_RX_BUF_TH */
#define RX_THR_SUPPER           0x0c350180
#define RX_THR_HIGH             0x7a120180
#define RX_THR_SLOW             0xffff0180
#define RX_THR_B                0x00010001

/* USB_TX_DMA */
#define TEST_MODE_DISABLE       0x00000001
#define TX_SIZE_ADJUST1         0x00000100

/* USB_BMU_RESET */
#define BMU_RESET_EP_IN         0x01
#define BMU_RESET_EP_OUT        0x02

/* USB_BMU_CONFIG */
#define ACT_ODMA                BIT(1)

/* USB_UPT_RXDMA_OWN */
#define OWN_UPDATE              BIT(0)
#define OWN_CLEAR               BIT(1)

/* USB_FW_TASK */
#define FC_PATCH_TASK           BIT(1)

/* USB_RX_AGGR_NUM */
#define RX_AGGR_NUM_MASK        0x1ff

/* USB_UPS_CTRL */
#define POWER_CUT               0x0100

/* USB_PM_CTRL_STATUS */
#define RESUME_INDICATE         0x0001

/* USB_ECM_OPTION */
#define BYPASS_MAC_RESET        BIT(5)

/* USB_CSTMR */
#define FORCE_SUPER             BIT(0)

/* USB_MISC_2 */
#define UPS_FORCE_PWR_DOWN      BIT(0)

/* USB_ECM_OP */
#define EN_ALL_SPEED            BIT(0)

/* USB_GPHY_CTRL */
#define GPHY_PATCH_DONE         BIT(2)
#define BYPASS_FLASH            BIT(5)
#define BACKUP_RESTRORE         BIT(6)

/* USB_SPEED_OPTION */
#define RG_PWRDN_EN             BIT(8)
#define ALL_SPEED_OFF           BIT(9)

/* USB_FW_CTRL */
#define FLOW_CTRL_PATCH_OPT     BIT(1)
#define AUTO_SPEEDUP            BIT(3)
#define FLOW_CTRL_PATCH_2       BIT(8)

/* USB_FC_TIMER */
#define CTRL_TIMER_EN           BIT(15)

/* USB_USB_CTRL */
#define CDC_ECM_EN              BIT(3)
#define RX_AGG_DISABLE          0x0010
#define RX_ZERO_EN              0x0080

/* USB_U2P3_CTRL */
#define U2P3_ENABLE             0x0001
#define RX_DETECT8              BIT(3)

/* USB_POWER_CUT */
#define PWR_EN                  0x0001
#define PHASE2_EN               0x0008
#define UPS_EN                  BIT(4)
#define USP_PREWAKE             BIT(5)

/* USB_MISC_0 */
#define PCUT_STATUS             0x0001

/* USB_RX_EARLY_TIMEOUT */
#define COALESCE_SUPER           85000U
#define COALESCE_HIGH           250000U
#define COALESCE_SLOW           524280U

/* USB_WDT1_CTRL */
#define WTD1_EN                 BIT(0)

/* USB_WDT11_CTRL */
#define TIMER11_EN              0x0001

/* USB_LPM_CTRL */
/* bit 4 ~ 5: fifo empty boundary */
#define FIFO_EMPTY_1FB          0x30    /* 0x1fb * 64 = 32448 bytes */
/* bit 2 ~ 3: LMP timer */
#define LPM_TIMER_MASK          0x0c
#define LPM_TIMER_500MS         0x04    /* 500 ms */
#define LPM_TIMER_500US         0x0c    /* 500 us */
#define ROK_EXIT_LPM            0x02

/* USB_AFE_CTRL2 */
#define SEN_VAL_MASK            0xf800
#define SEN_VAL_NORMAL          0xa000
#define SEL_RXIDLE              0x0100

/* USB_UPHY_XTAL */
#define OOBS_POLLING            BIT(8)

/* USB_UPS_CFG */
#define SAW_CNT_1MS_MASK        0x0fff
#define MID_REVERSE             BIT(5)  /* RTL8156A */

/* USB_UPS_FLAGS */
#define UPS_FLAGS_R_TUNE                BIT(0)
#define UPS_FLAGS_EN_10M_CKDIV          BIT(1)
#define UPS_FLAGS_250M_CKDIV            BIT(2)
#define UPS_FLAGS_EN_ALDPS              BIT(3)
#define UPS_FLAGS_CTAP_SHORT_DIS        BIT(4)
#define UPS_FLAGS_SPEED_MASK            (0xf << 16)
#define ups_flags_speed(x)              ((x) << 16)
#define UPS_FLAGS_EN_EEE                BIT(20)
#define UPS_FLAGS_EN_500M_EEE           BIT(21)
#define UPS_FLAGS_EN_EEE_CKDIV          BIT(22)
#define UPS_FLAGS_EEE_PLLOFF_100        BIT(23)
#define UPS_FLAGS_EEE_PLLOFF_GIGA       BIT(24)
#define UPS_FLAGS_EEE_CMOD_LV_EN        BIT(25)
#define UPS_FLAGS_EN_GREEN              BIT(26)
#define UPS_FLAGS_EN_FLOW_CTR           BIT(27)

enum spd_duplex {
        NWAY_10M_HALF,
        NWAY_10M_FULL,
        NWAY_100M_HALF,
        NWAY_100M_FULL,
        NWAY_1000M_FULL,
        FORCE_10M_HALF,
        FORCE_10M_FULL,
        FORCE_100M_HALF,
        FORCE_100M_FULL,
        FORCE_1000M_FULL,
        NWAY_2500M_FULL,
};

/* OCP_ALDPS_CONFIG */
#define ENPWRSAVE               0x8000
#define ENPDNPS                 0x0200
#define LINKENA                 0x0100
#define DIS_SDSAVE              0x0010

/* OCP_PHY_STATUS */
#define PHY_STAT_MASK           0x0007
#define PHY_STAT_EXT_INIT       2
#define PHY_STAT_LAN_ON         3
#define PHY_STAT_PWRDN          5

/* OCP_INTR_EN */
#define INTR_SPEED_FORCE        BIT(3)

/* OCP_NCTL_CFG */
#define PGA_RETURN_EN           BIT(1)

/* OCP_POWER_CFG */
#define EEE_CLKDIV_EN           0x8000
#define EN_ALDPS                0x0004
#define EN_10M_PLLOFF           0x0001

/* OCP_EEE_CONFIG1 */
#define RG_TXLPI_MSK_HFDUP      0x8000
#define RG_MATCLR_EN            0x4000
#define EEE_10_CAP              0x2000
#define EEE_NWAY_EN             0x1000
#define TX_QUIET_EN             0x0200
#define RX_QUIET_EN             0x0100
#define sd_rise_time_mask       0x0070
#define sd_rise_time(x)         (min(x, 7) << 4)        /* bit 4 ~ 6 */
#define RG_RXLPI_MSK_HFDUP      0x0008
#define SDFALLTIME              0x0007  /* bit 0 ~ 2 */

/* OCP_EEE_CONFIG2 */
#define RG_LPIHYS_NUM           0x7000  /* bit 12 ~ 15 */
#define RG_DACQUIET_EN          0x0400
#define RG_LDVQUIET_EN          0x0200
#define RG_CKRSEL               0x0020
#define RG_EEEPRG_EN            0x0010

/* OCP_EEE_CONFIG3 */
#define fast_snr_mask           0xff80
#define fast_snr(x)             (min(x, 0x1ff) << 7)    /* bit 7 ~ 15 */
#define RG_LFS_SEL              0x0060  /* bit 6 ~ 5 */
#define MSK_PH                  0x0006  /* bit 0 ~ 3 */

/* OCP_EEE_AR */
/* bit[15:14] function */
#define FUN_ADDR                0x0000
#define FUN_DATA                0x4000
/* bit[4:0] device addr */

/* OCP_EEE_CFG */
#define CTAP_SHORT_EN           0x0040
#define EEE10_EN                0x0010

/* OCP_DOWN_SPEED */
#define EN_EEE_CMODE            BIT(14)
#define EN_EEE_1000             BIT(13)
#define EN_EEE_100              BIT(12)
#define EN_10M_CLKDIV           BIT(11)
#define EN_10M_BGOFF            0x0080

/* OCP_10GBT_CTRL */
#define RTL_ADV2_5G_F_R         BIT(5)  /* Advertise 2.5GBASE-T fast-retrain */

/* OCP_PHY_STATE */
#define TXDIS_STATE             0x01
#define ABD_STATE               0x02

/* OCP_PHY_PATCH_STAT */
#define PATCH_READY             BIT(6)

/* OCP_PHY_PATCH_CMD */
#define PATCH_REQUEST           BIT(4)

/* OCP_PHY_LOCK */
#define PATCH_LOCK              BIT(0)

/* OCP_ADC_CFG */
#define CKADSEL_L               0x0100
#define ADC_EN                  0x0080
#define EN_EMI_L                0x0040

/* OCP_SYSCLK_CFG */
#define sysclk_div_expo(x)      (min(x, 5) << 8)
#define clk_div_expo(x)         (min(x, 5) << 4)

/* SRAM_GREEN_CFG */
#define GREEN_ETH_EN            BIT(15)
#define R_TUNE_EN               BIT(11)

/* SRAM_LPF_CFG */
#define LPF_AUTO_TUNE           0x8000

/* SRAM_10M_AMP1 */
#define GDAC_IB_UPALL           0x0008

/* SRAM_10M_AMP2 */
#define AMP_DN                  0x0200

/* SRAM_IMPEDANCE */
#define RX_DRIVING_MASK         0x6000

/* SRAM_PHY_LOCK */
#define PHY_PATCH_LOCK          0x0001

/* MAC PASSTHRU */
#define AD_MASK                 0xfee0
#define BND_MASK                0x0004
#define BD_MASK                 0x0001
#define EFUSE                   0xcfdb
#define PASS_THRU_MASK          0x1

#define BP4_SUPER_ONLY          0x1578  /* RTL_VER_04 only */

enum rtl_register_content {
        _2500bps        = BIT(10),
        _1250bps        = BIT(9),
        _500bps         = BIT(8),
        _tx_flow        = BIT(6),
        _rx_flow        = BIT(5),
        _1000bps        = 0x10,
        _100bps         = 0x08,
        _10bps          = 0x04,
        LINK_STATUS     = 0x02,
        FULL_DUP        = 0x01,
};

#define is_speed_2500(_speed)   (((_speed) & (_2500bps | LINK_STATUS)) == (_2500bps | LINK_STATUS))
#define is_flow_control(_speed) (((_speed) & (_tx_flow | _rx_flow)) == (_tx_flow | _rx_flow))

#define RTL8152_MAX_TX          4
#define RTL8152_MAX_RX          10
#define INTBUFSIZE              2
#define TX_ALIGN                4
#define RX_ALIGN                8

#define RTL8152_RX_MAX_PENDING  4096
#define RTL8152_RXFG_HEADSZ     256

#define INTR_LINK               0x0004

#define RTL8152_RMS             (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN)
#define RTL8153_RMS             RTL8153_MAX_PACKET
#define RTL8152_TX_TIMEOUT      (5 * HZ)
#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 {
        RTL8152_INACCESSIBLE = 0,
        RTL8152_SET_RX_MODE,
        WORK_ENABLE,
        RTL8152_LINK_CHG,
        SELECTIVE_SUSPEND,
        PHY_RESET,
        SCHEDULE_TASKLET,
        GREEN_ETHERNET,
        RX_EPROTO,
        IN_PRE_RESET,
        PROBED_WITH_NO_ERRORS,
        PROBE_SHOULD_RETRY,
};

#define DEVICE_ID_LENOVO_USB_C_TRAVEL_HUB               0x721e
#define DEVICE_ID_THINKPAD_ONELINK_PLUS_DOCK            0x3054
#define DEVICE_ID_THINKPAD_THUNDERBOLT3_DOCK_GEN2       0x3082
#define DEVICE_ID_THINKPAD_USB_C_DONGLE                 0x720c
#define DEVICE_ID_THINKPAD_USB_C_DOCK_GEN2              0xa387
#define DEVICE_ID_THINKPAD_USB_C_DOCK_GEN3              0x3062

struct tally_counter {
        __le64  tx_packets;
        __le64  rx_packets;
        __le64  tx_errors;
        __le32  rx_errors;
        __le16  rx_missed;
        __le16  align_errors;
        __le32  tx_one_collision;
        __le32  tx_multi_collision;
        __le64  rx_unicast;
        __le64  rx_broadcast;
        __le32  rx_multicast;
        __le16  tx_aborted;
        __le16  tx_underrun;
};

struct rx_desc {
        __le32 opts1;
#define RX_LEN_MASK                     0x7fff

        __le32 opts2;
#define RD_UDP_CS                       BIT(23)
#define RD_TCP_CS                       BIT(22)
#define RD_IPV6_CS                      BIT(20)
#define RD_IPV4_CS                      BIT(19)

        __le32 opts3;
#define IPF                             BIT(23) /* IP checksum fail */
#define UDPF                            BIT(22) /* UDP checksum fail */
#define TCPF                            BIT(21) /* TCP checksum fail */
#define RX_VLAN_TAG                     BIT(16)

        __le32 opts4;
        __le32 opts5;
        __le32 opts6;
};

struct tx_desc {
        __le32 opts1;
#define TX_FS                   BIT(31) /* First segment of a packet */
#define TX_LS                   BIT(30) /* Final segment of a packet */
#define GTSENDV4                BIT(28)
#define GTSENDV6                BIT(27)
#define GTTCPHO_SHIFT           18
#define GTTCPHO_MAX             0x7fU
#define TX_LEN_MAX              0x3ffffU

        __le32 opts2;
#define UDP_CS                  BIT(31) /* Calculate UDP/IP checksum */
#define TCP_CS                  BIT(30) /* Calculate TCP/IP checksum */
#define IPV4_CS                 BIT(29) /* Calculate IPv4 checksum */
#define IPV6_CS                 BIT(28) /* Calculate IPv6 checksum */
#define MSS_SHIFT               17
#define MSS_MAX                 0x7ffU
#define TCPHO_SHIFT             17
#define TCPHO_MAX               0x7ffU
#define TX_VLAN_TAG             BIT(16)
};

struct r8152;

struct rx_agg {
        struct list_head list, info_list;
        struct urb *urb;
        struct r8152 *context;
        struct page *page;
        void *buffer;
};

struct tx_agg {
        struct list_head list;
        struct urb *urb;
        struct r8152 *context;
        void *buffer;
        void *head;
        u32 skb_num;
        u32 skb_len;
};

struct r8152 {
        unsigned long flags;
        struct usb_device *udev;
        struct napi_struct napi;
        struct usb_interface *intf;
        struct net_device *netdev;
        struct urb *intr_urb;
        struct tx_agg tx_info[RTL8152_MAX_TX];
        struct list_head rx_info, rx_used;
        struct list_head rx_done, tx_free;
        struct sk_buff_head tx_queue, rx_queue;
        spinlock_t rx_lock, tx_lock;
        struct delayed_work schedule, hw_phy_work;
        struct mii_if_info mii;
        struct mutex control;   /* use for hw setting */
#ifdef CONFIG_PM_SLEEP
        struct notifier_block pm_notifier;
#endif
        struct tasklet_struct tx_tl;

        struct rtl_ops {
                void (*init)(struct r8152 *tp);
                int (*enable)(struct r8152 *tp);
                void (*disable)(struct r8152 *tp);
                void (*up)(struct r8152 *tp);
                void (*down)(struct r8152 *tp);
                void (*unload)(struct r8152 *tp);
                int (*eee_get)(struct r8152 *tp, struct ethtool_keee *eee);
                int (*eee_set)(struct r8152 *tp, struct ethtool_keee *eee);
                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 {
                u32 r_tune:1;
                u32 _10m_ckdiv:1;
                u32 _250m_ckdiv:1;
                u32 aldps:1;
                u32 lite_mode:2;
                u32 speed_duplex:4;
                u32 eee:1;
                u32 eee_lite:1;
                u32 eee_ckdiv:1;
                u32 eee_plloff_100:1;
                u32 eee_plloff_giga:1;
                u32 eee_cmod_lv:1;
                u32 green:1;
                u32 flow_control:1;
                u32 ctap_short_off:1;
        } ups_info;

#define RTL_VER_SIZE            32

        struct rtl_fw {
                const char *fw_name;
                const struct firmware *fw;

                char version[RTL_VER_SIZE];
                int (*pre_fw)(struct r8152 *tp);
                int (*post_fw)(struct r8152 *tp);

                bool retry;
        } rtl_fw;

        atomic_t rx_count;

        bool eee_en;
        int intr_interval;
        u32 saved_wolopts;
        u32 msg_enable;
        u32 tx_qlen;
        u32 coalesce;
        u32 advertising;
        u32 rx_buf_sz;
        u32 rx_copybreak;
        u32 rx_pending;
        u32 fc_pause_on, fc_pause_off;

        unsigned int pipe_in, pipe_out, pipe_intr, pipe_ctrl_in, pipe_ctrl_out;

        u32 support_2500full:1;
        u32 lenovo_macpassthru:1;
        u32 dell_tb_rx_agg_bug:1;
        u16 ocp_base;
        u16 speed;
        u16 eee_adv;
        u8 *intr_buff;
        u8 version;
        u8 duplex;
        u8 autoneg;

        unsigned int reg_access_reset_count;
};

/**
 * struct fw_block - block type and total length
 * @type: type of the current block, such as RTL_FW_END, RTL_FW_PLA,
 *      RTL_FW_USB and so on.
 * @length: total length of the current block.
 */
struct fw_block {
        __le32 type;
        __le32 length;
} __packed;

/**
 * struct fw_header - header of the firmware file
 * @checksum: checksum of sha256 which is calculated from the whole file
 *      except the checksum field of the file. That is, calculate sha256
 *      from the version field to the end of the file.
 * @version: version of this firmware.
 * @blocks: the first firmware block of the file
 */
struct fw_header {
        u8 checksum[32];
        char version[RTL_VER_SIZE];
        struct fw_block blocks[];
} __packed;

enum rtl8152_fw_flags {
        FW_FLAGS_USB = 0,
        FW_FLAGS_PLA,
        FW_FLAGS_START,
        FW_FLAGS_STOP,
        FW_FLAGS_NC,
        FW_FLAGS_NC1,
        FW_FLAGS_NC2,
        FW_FLAGS_UC2,
        FW_FLAGS_UC,
        FW_FLAGS_SPEED_UP,
        FW_FLAGS_VER,
};

enum rtl8152_fw_fixup_cmd {
        FW_FIXUP_AND = 0,
        FW_FIXUP_OR,
        FW_FIXUP_NOT,
        FW_FIXUP_XOR,
};

struct fw_phy_set {
        __le16 addr;
        __le16 data;
} __packed;

struct fw_phy_speed_up {
        struct fw_block blk_hdr;
        __le16 fw_offset;
        __le16 version;
        __le16 fw_reg;
        __le16 reserved;
        char info[];
} __packed;

struct fw_phy_ver {
        struct fw_block blk_hdr;
        struct fw_phy_set ver;
        __le32 reserved;
} __packed;

struct fw_phy_fixup {
        struct fw_block blk_hdr;
        struct fw_phy_set setting;
        __le16 bit_cmd;
        __le16 reserved;
} __packed;

struct fw_phy_union {
        struct fw_block blk_hdr;
        __le16 fw_offset;
        __le16 fw_reg;
        struct fw_phy_set pre_set[2];
        struct fw_phy_set bp[8];
        struct fw_phy_set bp_en;
        u8 pre_num;
        u8 bp_num;
        char info[];
} __packed;

/**
 * struct fw_mac - a firmware block used by RTL_FW_PLA and RTL_FW_USB.
 *      The layout of the firmware block is:
 *      <struct fw_mac> + <info> + <firmware data>.
 * @blk_hdr: firmware descriptor (type, length)
 * @fw_offset: offset of the firmware binary data. The start address of
 *      the data would be the address of struct fw_mac + @fw_offset.
 * @fw_reg: the register to load the firmware. Depends on chip.
 * @bp_ba_addr: the register to write break point base address. Depends on
 *      chip.
 * @bp_ba_value: break point base address. Depends on chip.
 * @bp_en_addr: the register to write break point enabled mask. Depends
 *      on chip.
 * @bp_en_value: break point enabled mask. Depends on the firmware.
 * @bp_start: the start register of break points. Depends on chip.
 * @bp_num: the break point number which needs to be set for this firmware.
 *      Depends on the firmware.
 * @bp: break points. Depends on firmware.
 * @reserved: reserved space (unused)
 * @fw_ver_reg: the register to store the fw version.
 * @fw_ver_data: the firmware version of the current type.
 * @info: additional information for debugging, and is followed by the
 *      binary data of firmware.
 */
struct fw_mac {
        struct fw_block blk_hdr;
        __le16 fw_offset;
        __le16 fw_reg;
        __le16 bp_ba_addr;
        __le16 bp_ba_value;
        __le16 bp_en_addr;
        __le16 bp_en_value;
        __le16 bp_start;
        __le16 bp_num;
        __le16 bp[16]; /* any value determined by firmware */
        __le32 reserved;
        __le16 fw_ver_reg;
        u8 fw_ver_data;
        char info[];
} __packed;

/**
 * struct fw_phy_patch_key - a firmware block used by RTL_FW_PHY_START.
 *      This is used to set patch key when loading the firmware of PHY.
 * @blk_hdr: firmware descriptor (type, length)
 * @key_reg: the register to write the patch key.
 * @key_data: patch key.
 * @reserved: reserved space (unused)
 */
struct fw_phy_patch_key {
        struct fw_block blk_hdr;
        __le16 key_reg;
        __le16 key_data;
        __le32 reserved;
} __packed;

/**
 * struct fw_phy_nc - a firmware block used by RTL_FW_PHY_NC.
 *      The layout of the firmware block is:
 *      <struct fw_phy_nc> + <info> + <firmware data>.
 * @blk_hdr: firmware descriptor (type, length)
 * @fw_offset: offset of the firmware binary data. The start address of
 *      the data would be the address of struct fw_phy_nc + @fw_offset.
 * @fw_reg: the register to load the firmware. Depends on chip.
 * @ba_reg: the register to write the base address. Depends on chip.
 * @ba_data: base address. Depends on chip.
 * @patch_en_addr: the register of enabling patch mode. Depends on chip.
 * @patch_en_value: patch mode enabled mask. Depends on the firmware.
 * @mode_reg: the regitster of switching the mode.
 * @mode_pre: the mode needing to be set before loading the firmware.
 * @mode_post: the mode to be set when finishing to load the firmware.
 * @reserved: reserved space (unused)
 * @bp_start: the start register of break points. Depends on chip.
 * @bp_num: the break point number which needs to be set for this firmware.
 *      Depends on the firmware.
 * @bp: break points. Depends on firmware.
 * @info: additional information for debugging, and is followed by the
 *      binary data of firmware.
 */
struct fw_phy_nc {
        struct fw_block blk_hdr;
        __le16 fw_offset;
        __le16 fw_reg;
        __le16 ba_reg;
        __le16 ba_data;
        __le16 patch_en_addr;
        __le16 patch_en_value;
        __le16 mode_reg;
        __le16 mode_pre;
        __le16 mode_post;
        __le16 reserved;
        __le16 bp_start;
        __le16 bp_num;
        __le16 bp[4];
        char info[];
} __packed;

enum rtl_fw_type {
        RTL_FW_END = 0,
        RTL_FW_PLA,
        RTL_FW_USB,
        RTL_FW_PHY_START,
        RTL_FW_PHY_STOP,
        RTL_FW_PHY_NC,
        RTL_FW_PHY_FIXUP,
        RTL_FW_PHY_UNION_NC,
        RTL_FW_PHY_UNION_NC1,
        RTL_FW_PHY_UNION_NC2,
        RTL_FW_PHY_UNION_UC2,
        RTL_FW_PHY_UNION_UC,
        RTL_FW_PHY_UNION_MISC,
        RTL_FW_PHY_SPEED_UP,
        RTL_FW_PHY_VER,
};

enum rtl_version {
        RTL_VER_UNKNOWN = 0,
        RTL_VER_01,
        RTL_VER_02,
        RTL_VER_03,
        RTL_VER_04,
        RTL_VER_05,
        RTL_VER_06,
        RTL_VER_07,
        RTL_VER_08,
        RTL_VER_09,

        RTL_TEST_01,
        RTL_VER_10,
        RTL_VER_11,
        RTL_VER_12,
        RTL_VER_13,
        RTL_VER_14,
        RTL_VER_15,

        RTL_VER_MAX
};

enum tx_csum_stat {
        TX_CSUM_SUCCESS = 0,
        TX_CSUM_TSO,
        TX_CSUM_NONE
};

#define RTL_ADVERTISED_10_HALF                  BIT(0)
#define RTL_ADVERTISED_10_FULL                  BIT(1)
#define RTL_ADVERTISED_100_HALF                 BIT(2)
#define RTL_ADVERTISED_100_FULL                 BIT(3)
#define RTL_ADVERTISED_1000_HALF                BIT(4)
#define RTL_ADVERTISED_1000_FULL                BIT(5)
#define RTL_ADVERTISED_2500_FULL                BIT(6)

/* Maximum number of multicast addresses to filter (vs. Rx-all-multicast).
 * The RTL chips use a 64 element hash table based on the Ethernet CRC.
 */
static const int multicast_filter_limit = 32;
static unsigned int agg_buf_sz = 16384;

#define RTL_LIMITED_TSO_SIZE    (size_to_mtu(agg_buf_sz) - sizeof(struct tx_desc))

/* If register access fails then we block access and issue a reset. If this
 * happens too many times in a row without a successful access then we stop
 * trying to reset and just leave access blocked.
 */
#define REGISTER_ACCESS_MAX_RESETS      3

static void rtl_set_inaccessible(struct r8152 *tp)
{
        set_bit(RTL8152_INACCESSIBLE, &tp->flags);
        smp_mb__after_atomic();
}

static void rtl_set_accessible(struct r8152 *tp)
{
        clear_bit(RTL8152_INACCESSIBLE, &tp->flags);
        smp_mb__after_atomic();
}

static
int r8152_control_msg(struct r8152 *tp, unsigned int pipe, __u8 request,
                      __u8 requesttype, __u16 value, __u16 index, void *data,
                      __u16 size, const char *msg_tag)
{
        struct usb_device *udev = tp->udev;
        int ret;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        ret = usb_control_msg(udev, pipe, request, requesttype,
                              value, index, data, size,
                              USB_CTRL_GET_TIMEOUT);

        /* No need to issue a reset to report an error if the USB device got
         * unplugged; just return immediately.
         */
        if (ret == -ENODEV)
                return ret;

        /* If the write was successful then we're done */
        if (ret >= 0) {
                tp->reg_access_reset_count = 0;
                return ret;
        }

        dev_err(&udev->dev,
                "Failed to %s %d bytes at %#06x/%#06x (%d)\n",
                msg_tag, size, value, index, ret);

        /* Block all future register access until we reset. Much of the code
         * in the driver doesn't check for errors. Notably, many parts of the
         * driver do a read/modify/write of a register value without
         * confirming that the read succeeded. Writing back modified garbage
         * like this can fully wedge the adapter, requiring a power cycle.
         */
        rtl_set_inaccessible(tp);

        /* If probe hasn't yet finished, then we'll request a retry of the
         * whole probe routine if we get any control transfer errors. We
         * never have to clear this bit since we free/reallocate the whole "tp"
         * structure if we retry probe.
         */
        if (!test_bit(PROBED_WITH_NO_ERRORS, &tp->flags)) {
                set_bit(PROBE_SHOULD_RETRY, &tp->flags);
                return ret;
        }

        /* Failing to access registers in pre-reset is not surprising since we
         * wouldn't be resetting if things were behaving normally. The register
         * access we do in pre-reset isn't truly mandatory--we're just reusing
         * the disable() function and trying to be nice by powering the
         * adapter down before resetting it. Thus, if we're in pre-reset,
         * we'll return right away and not try to queue up yet another reset.
         * We know the post-reset is already coming.
         */
        if (test_bit(IN_PRE_RESET, &tp->flags))
                return ret;

        if (tp->reg_access_reset_count < REGISTER_ACCESS_MAX_RESETS) {
                usb_queue_reset_device(tp->intf);
                tp->reg_access_reset_count++;
        } else if (tp->reg_access_reset_count == REGISTER_ACCESS_MAX_RESETS) {
                dev_err(&udev->dev,
                        "Tried to reset %d times; giving up.\n",
                        REGISTER_ACCESS_MAX_RESETS);
        }

        return ret;
}

static
int get_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data)
{
        int ret;
        void *tmp;

        tmp = kmalloc(size, GFP_KERNEL);
        if (!tmp)
                return -ENOMEM;

        ret = r8152_control_msg(tp, tp->pipe_ctrl_in,
                                RTL8152_REQ_GET_REGS, RTL8152_REQT_READ,
                                value, index, tmp, size, "read");

        if (ret < 0)
                memset(data, 0xff, size);
        else
                memcpy(data, tmp, size);

        kfree(tmp);

        return ret;
}

static
int set_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data)
{
        int ret;
        void *tmp;

        tmp = kmemdup(data, size, GFP_KERNEL);
        if (!tmp)
                return -ENOMEM;

        ret = r8152_control_msg(tp, tp->pipe_ctrl_out,
                                RTL8152_REQ_SET_REGS, RTL8152_REQT_WRITE,
                                value, index, tmp, size, "write");

        kfree(tmp);

        return ret;
}

static void rtl_set_unplug(struct r8152 *tp)
{
        if (tp->udev->state == USB_STATE_NOTATTACHED)
                rtl_set_inaccessible(tp);
}

static int generic_ocp_read(struct r8152 *tp, u16 index, u16 size,
                            void *data, u16 type)
{
        u16 limit = 64;
        int ret = 0;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        /* both size and indix must be 4 bytes align */
        if ((size & 3) || !size || (index & 3) || !data)
                return -EPERM;

        if ((u32)index + (u32)size > 0xffff)
                return -EPERM;

        while (size) {
                if (size > limit) {
                        ret = get_registers(tp, index, type, limit, data);
                        if (ret < 0)
                                break;

                        index += limit;
                        data += limit;
                        size -= limit;
                } else {
                        ret = get_registers(tp, index, type, size, data);
                        if (ret < 0)
                                break;

                        index += size;
                        data += size;
                        size = 0;
                        break;
                }
        }

        if (ret == -ENODEV)
                rtl_set_unplug(tp);

        return ret;
}

static int generic_ocp_write(struct r8152 *tp, u16 index, u16 byteen,
                             u16 size, void *data, u16 type)
{
        int ret;
        u16 byteen_start, byteen_end, byen;
        u16 limit = 512;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        /* both size and indix must be 4 bytes align */
        if ((size & 3) || !size || (index & 3) || !data)
                return -EPERM;

        if ((u32)index + (u32)size > 0xffff)
                return -EPERM;

        byteen_start = byteen & BYTE_EN_START_MASK;
        byteen_end = byteen & BYTE_EN_END_MASK;

        byen = byteen_start | (byteen_start << 4);

        /* Split the first DWORD if the byte_en is not 0xff */
        if (byen != BYTE_EN_DWORD) {
                ret = set_registers(tp, index, type | byen, 4, data);
                if (ret < 0)
                        goto error1;

                index += 4;
                data += 4;
                size -= 4;
        }

        if (size) {
                byen = byteen_end | (byteen_end >> 4);

                /* Split the last DWORD if the byte_en is not 0xff */
                if (byen != BYTE_EN_DWORD)
                        size -= 4;

                while (size) {
                        if (size > limit) {
                                ret = set_registers(tp, index,
                                                    type | BYTE_EN_DWORD,
                                                    limit, data);
                                if (ret < 0)
                                        goto error1;

                                index += limit;
                                data += limit;
                                size -= limit;
                        } else {
                                ret = set_registers(tp, index,
                                                    type | BYTE_EN_DWORD,
                                                    size, data);
                                if (ret < 0)
                                        goto error1;

                                index += size;
                                data += size;
                                size = 0;
                                break;
                        }
                }

                /* Set the last DWORD */
                if (byen != BYTE_EN_DWORD)
                        ret = set_registers(tp, index, type | byen, 4, data);
        }

error1:
        if (ret == -ENODEV)
                rtl_set_unplug(tp);

        return ret;
}

static inline
int pla_ocp_read(struct r8152 *tp, u16 index, u16 size, void *data)
{
        return generic_ocp_read(tp, index, size, data, MCU_TYPE_PLA);
}

static inline
int pla_ocp_write(struct r8152 *tp, u16 index, u16 byteen, u16 size, void *data)
{
        return generic_ocp_write(tp, index, byteen, size, data, MCU_TYPE_PLA);
}

static inline
int usb_ocp_write(struct r8152 *tp, u16 index, u16 byteen, u16 size, void *data)
{
        return generic_ocp_write(tp, index, byteen, size, data, MCU_TYPE_USB);
}

static u32 ocp_read_dword(struct r8152 *tp, u16 type, u16 index)
{
        __le32 data;

        generic_ocp_read(tp, index, sizeof(data), &data, type);

        return __le32_to_cpu(data);
}

static void ocp_write_dword(struct r8152 *tp, u16 type, u16 index, u32 data)
{
        __le32 tmp = __cpu_to_le32(data);

        generic_ocp_write(tp, index, BYTE_EN_DWORD, sizeof(tmp), &tmp, type);
}

static u16 ocp_read_word(struct r8152 *tp, u16 type, u16 index)
{
        u32 data;
        __le32 tmp;
        u16 byen = BYTE_EN_WORD;
        u8 shift = index & 2;

        index &= ~3;
        byen <<= shift;

        generic_ocp_read(tp, index, sizeof(tmp), &tmp, type | byen);

        data = __le32_to_cpu(tmp);
        data >>= (shift * 8);
        data &= 0xffff;

        return (u16)data;
}

static void ocp_write_word(struct r8152 *tp, u16 type, u16 index, u32 data)
{
        u32 mask = 0xffff;
        __le32 tmp;
        u16 byen = BYTE_EN_WORD;
        u8 shift = index & 2;

        data &= mask;

        if (index & 2) {
                byen <<= shift;
                mask <<= (shift * 8);
                data <<= (shift * 8);
                index &= ~3;
        }

        tmp = __cpu_to_le32(data);

        generic_ocp_write(tp, index, byen, sizeof(tmp), &tmp, type);
}

static u8 ocp_read_byte(struct r8152 *tp, u16 type, u16 index)
{
        u32 data;
        __le32 tmp;
        u8 shift = index & 3;

        index &= ~3;

        generic_ocp_read(tp, index, sizeof(tmp), &tmp, type);

        data = __le32_to_cpu(tmp);
        data >>= (shift * 8);
        data &= 0xff;

        return (u8)data;
}

static void ocp_write_byte(struct r8152 *tp, u16 type, u16 index, u32 data)
{
        u32 mask = 0xff;
        __le32 tmp;
        u16 byen = BYTE_EN_BYTE;
        u8 shift = index & 3;

        data &= mask;

        if (index & 3) {
                byen <<= shift;
                mask <<= (shift * 8);
                data <<= (shift * 8);
                index &= ~3;
        }

        tmp = __cpu_to_le32(data);

        generic_ocp_write(tp, index, byen, sizeof(tmp), &tmp, type);
}

static u16 ocp_reg_read(struct r8152 *tp, u16 addr)
{
        u16 ocp_base, ocp_index;

        ocp_base = addr & 0xf000;
        if (ocp_base != tp->ocp_base) {
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_OCP_GPHY_BASE, ocp_base);
                tp->ocp_base = ocp_base;
        }

        ocp_index = (addr & 0x0fff) | 0xb000;
        return ocp_read_word(tp, MCU_TYPE_PLA, ocp_index);
}

static void ocp_reg_write(struct r8152 *tp, u16 addr, u16 data)
{
        u16 ocp_base, ocp_index;

        ocp_base = addr & 0xf000;
        if (ocp_base != tp->ocp_base) {
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_OCP_GPHY_BASE, ocp_base);
                tp->ocp_base = ocp_base;
        }

        ocp_index = (addr & 0x0fff) | 0xb000;
        ocp_write_word(tp, MCU_TYPE_PLA, ocp_index, data);
}

static inline void r8152_mdio_write(struct r8152 *tp, u32 reg_addr, u32 value)
{
        ocp_reg_write(tp, OCP_BASE_MII + reg_addr * 2, value);
}

static inline int r8152_mdio_read(struct r8152 *tp, u32 reg_addr)
{
        return ocp_reg_read(tp, OCP_BASE_MII + reg_addr * 2);
}

static void sram_write(struct r8152 *tp, u16 addr, u16 data)
{
        ocp_reg_write(tp, OCP_SRAM_ADDR, addr);
        ocp_reg_write(tp, OCP_SRAM_DATA, data);
}

static u16 sram_read(struct r8152 *tp, u16 addr)
{
        ocp_reg_write(tp, OCP_SRAM_ADDR, addr);
        return ocp_reg_read(tp, OCP_SRAM_DATA);
}

static int read_mii_word(struct net_device *netdev, int phy_id, int reg)
{
        struct r8152 *tp = netdev_priv(netdev);
        int ret;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        if (phy_id != R8152_PHY_ID)
                return -EINVAL;

        ret = r8152_mdio_read(tp, reg);

        return ret;
}

static
void write_mii_word(struct net_device *netdev, int phy_id, int reg, int val)
{
        struct r8152 *tp = netdev_priv(netdev);

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        if (phy_id != R8152_PHY_ID)
                return;

        r8152_mdio_write(tp, reg, val);
}

static int
r8152_submit_rx(struct r8152 *tp, struct rx_agg *agg, gfp_t mem_flags);

static int
rtl8152_set_speed(struct r8152 *tp, u8 autoneg, u32 speed, u8 duplex,
                  u32 advertising);

static int __rtl8152_set_mac_address(struct net_device *netdev, void *p,
                                     bool in_resume)
{
        struct r8152 *tp = netdev_priv(netdev);
        struct sockaddr *addr = p;
        int ret = -EADDRNOTAVAIL;

        if (!is_valid_ether_addr(addr->sa_data))
                goto out1;

        if (!in_resume) {
                ret = usb_autopm_get_interface(tp->intf);
                if (ret < 0)
                        goto out1;
        }

        mutex_lock(&tp->control);

        eth_hw_addr_set(netdev, addr->sa_data);

        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);
        pla_ocp_write(tp, PLA_IDR, BYTE_EN_SIX_BYTES, 8, addr->sa_data);
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);

        mutex_unlock(&tp->control);

        if (!in_resume)
                usb_autopm_put_interface(tp->intf);
out1:
        return ret;
}

static int rtl8152_set_mac_address(struct net_device *netdev, void *p)
{
        return __rtl8152_set_mac_address(netdev, p, false);
}

/* Devices containing proper chips can support a persistent
 * host system provided MAC address.
 * Examples of this are Dell TB15 and Dell WD15 docks
 */
static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa)
{
        acpi_status status;
        struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL };
        union acpi_object *obj;
        int ret = -EINVAL;
        u32 ocp_data;
        unsigned char buf[6];
        char *mac_obj_name;
        acpi_object_type mac_obj_type;
        int mac_strlen;

        if (tp->lenovo_macpassthru) {
                mac_obj_name = "\\MACA";
                mac_obj_type = ACPI_TYPE_STRING;
                mac_strlen = 0x16;
        } else {
                /* test for -AD variant of RTL8153 */
                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
                if ((ocp_data & AD_MASK) == 0x1000) {
                        /* test for MAC address pass-through bit */
                        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
                        if ((ocp_data & PASS_THRU_MASK) != 1) {
                                netif_dbg(tp, probe, tp->netdev,
                                                "No efuse for RTL8153-AD MAC pass through\n");
                                return -ENODEV;
                        }
                } else {
                        /* test for RTL8153-BND and RTL8153-BD */
                        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
                        if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) {
                                netif_dbg(tp, probe, tp->netdev,
                                                "Invalid variant for MAC pass through\n");
                                return -ENODEV;
                        }
                }

                mac_obj_name = "\\_SB.AMAC";
                mac_obj_type = ACPI_TYPE_BUFFER;
                mac_strlen = 0x17;
        }

        /* returns _AUXMAC_#AABBCCDDEEFF# */
        status = acpi_evaluate_object(NULL, mac_obj_name, NULL, &buffer);
        obj = (union acpi_object *)buffer.pointer;
        if (!ACPI_SUCCESS(status))
                return -ENODEV;
        if (obj->type != mac_obj_type || obj->string.length != mac_strlen) {
                netif_warn(tp, probe, tp->netdev,
                           "Invalid buffer for pass-thru MAC addr: (%d, %d)\n",
                           obj->type, obj->string.length);
                goto amacout;
        }

        if (strncmp(obj->string.pointer, "_AUXMAC_#", 9) != 0 ||
            strncmp(obj->string.pointer + 0x15, "#", 1) != 0) {
                netif_warn(tp, probe, tp->netdev,
                           "Invalid header when reading pass-thru MAC addr\n");
                goto amacout;
        }
        ret = hex2bin(buf, obj->string.pointer + 9, 6);
        if (!(ret == 0 && is_valid_ether_addr(buf))) {
                netif_warn(tp, probe, tp->netdev,
                           "Invalid MAC for pass-thru MAC addr: %d, %pM\n",
                           ret, buf);
                ret = -EINVAL;
                goto amacout;
        }
        memcpy(sa->sa_data, buf, 6);
        tp->netdev->addr_assign_type = NET_ADDR_STOLEN;
        netif_info(tp, probe, tp->netdev,
                   "Using pass-thru MAC addr %pM\n", sa->sa_data);

amacout:
        kfree(obj);
        return ret;
}

static int determine_ethernet_addr(struct r8152 *tp, struct sockaddr *sa)
{
        struct net_device *dev = tp->netdev;
        int ret;

        sa->sa_family = dev->type;

        ret = eth_platform_get_mac_address(&tp->udev->dev, sa->sa_data);
        if (ret < 0) {
                if (tp->version == RTL_VER_01) {
                        ret = pla_ocp_read(tp, PLA_IDR, 8, sa->sa_data);
                } else {
                        /* if device doesn't support MAC pass through this will
                         * be expected to be non-zero
                         */
                        ret = vendor_mac_passthru_addr_read(tp, sa);
                        if (ret < 0)
                                ret = pla_ocp_read(tp, PLA_BACKUP, 8,
                                                   sa->sa_data);
                }
        }

        if (ret < 0) {
                netif_err(tp, probe, dev, "Get ether addr fail\n");
        } else if (!is_valid_ether_addr(sa->sa_data)) {
                netif_err(tp, probe, dev, "Invalid ether addr %pM\n",
                          sa->sa_data);
                eth_hw_addr_random(dev);
                ether_addr_copy(sa->sa_data, dev->dev_addr);
                netif_info(tp, probe, dev, "Random ether addr %pM\n",
                           sa->sa_data);
                return 0;
        }

        return ret;
}

static int set_ethernet_addr(struct r8152 *tp, bool in_resume)
{
        struct net_device *dev = tp->netdev;
        struct sockaddr sa;
        int ret;

        ret = determine_ethernet_addr(tp, &sa);
        if (ret < 0)
                return ret;

        if (tp->version == RTL_VER_01)
                eth_hw_addr_set(dev, sa.sa_data);
        else
                ret = __rtl8152_set_mac_address(dev, &sa, in_resume);

        return ret;
}

static void read_bulk_callback(struct urb *urb)
{
        struct net_device *netdev;
        int status = urb->status;
        struct rx_agg *agg;
        struct r8152 *tp;
        unsigned long flags;

        agg = urb->context;
        if (!agg)
                return;

        tp = agg->context;
        if (!tp)
                return;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        if (!test_bit(WORK_ENABLE, &tp->flags))
                return;

        netdev = tp->netdev;

        /* When link down, the driver would cancel all bulks. */
        /* This avoid the re-submitting bulk */
        if (!netif_carrier_ok(netdev))
                return;

        usb_mark_last_busy(tp->udev);

        switch (status) {
        case 0:
                if (urb->actual_length < ETH_ZLEN)
                        break;

                spin_lock_irqsave(&tp->rx_lock, flags);
                list_add_tail(&agg->list, &tp->rx_done);
                spin_unlock_irqrestore(&tp->rx_lock, flags);
                napi_schedule(&tp->napi);
                return;
        case -ESHUTDOWN:
                rtl_set_unplug(tp);
                netif_device_detach(tp->netdev);
                return;
        case -EPROTO:
                urb->actual_length = 0;
                spin_lock_irqsave(&tp->rx_lock, flags);
                list_add_tail(&agg->list, &tp->rx_done);
                spin_unlock_irqrestore(&tp->rx_lock, flags);
                set_bit(RX_EPROTO, &tp->flags);
                schedule_delayed_work(&tp->schedule, 1);
                return;
        case -ENOENT:
                return; /* the urb is in unlink state */
        case -ETIME:
                if (net_ratelimit())
                        netdev_warn(netdev, "maybe reset is needed?\n");
                break;
        default:
                if (net_ratelimit())
                        netdev_warn(netdev, "Rx status %d\n", status);
                break;
        }

        r8152_submit_rx(tp, agg, GFP_ATOMIC);
}

static void write_bulk_callback(struct urb *urb)
{
        struct net_device_stats *stats;
        struct net_device *netdev;
        struct tx_agg *agg;
        struct r8152 *tp;
        unsigned long flags;
        int status = urb->status;

        agg = urb->context;
        if (!agg)
                return;

        tp = agg->context;
        if (!tp)
                return;

        netdev = tp->netdev;
        stats = &netdev->stats;
        if (status) {
                if (net_ratelimit())
                        netdev_warn(netdev, "Tx status %d\n", status);
                stats->tx_errors += agg->skb_num;
        } else {
                stats->tx_packets += agg->skb_num;
                stats->tx_bytes += agg->skb_len;
        }

        spin_lock_irqsave(&tp->tx_lock, flags);
        list_add_tail(&agg->list, &tp->tx_free);
        spin_unlock_irqrestore(&tp->tx_lock, flags);

        usb_autopm_put_interface_async(tp->intf);

        if (!netif_carrier_ok(netdev))
                return;

        if (!test_bit(WORK_ENABLE, &tp->flags))
                return;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        if (!skb_queue_empty(&tp->tx_queue))
                tasklet_schedule(&tp->tx_tl);
}

static void intr_callback(struct urb *urb)
{
        struct r8152 *tp;
        __le16 *d;
        int status = urb->status;
        int res;

        tp = urb->context;
        if (!tp)
                return;

        if (!test_bit(WORK_ENABLE, &tp->flags))
                return;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        switch (status) {
        case 0:                 /* success */
                break;
        case -ECONNRESET:       /* unlink */
        case -ESHUTDOWN:
                netif_device_detach(tp->netdev);
                fallthrough;
        case -ENOENT:
        case -EPROTO:
                netif_info(tp, intr, tp->netdev,
                           "Stop submitting intr, status %d\n", status);
                return;
        case -EOVERFLOW:
                if (net_ratelimit())
                        netif_info(tp, intr, tp->netdev,
                                   "intr status -EOVERFLOW\n");
                goto resubmit;
        /* -EPIPE:  should clear the halt */
        default:
                netif_info(tp, intr, tp->netdev, "intr status %d\n", status);
                goto resubmit;
        }

        d = urb->transfer_buffer;
        if (INTR_LINK & __le16_to_cpu(d[0])) {
                if (!netif_carrier_ok(tp->netdev)) {
                        set_bit(RTL8152_LINK_CHG, &tp->flags);
                        schedule_delayed_work(&tp->schedule, 0);
                }
        } else {
                if (netif_carrier_ok(tp->netdev)) {
                        netif_stop_queue(tp->netdev);
                        set_bit(RTL8152_LINK_CHG, &tp->flags);
                        schedule_delayed_work(&tp->schedule, 0);
                }
        }

resubmit:
        res = usb_submit_urb(urb, GFP_ATOMIC);
        if (res == -ENODEV) {
                rtl_set_unplug(tp);
                netif_device_detach(tp->netdev);
        } else if (res) {
                netif_err(tp, intr, tp->netdev,
                          "can't resubmit intr, status %d\n", res);
        }
}

static inline void *rx_agg_align(void *data)
{
        return (void *)ALIGN((uintptr_t)data, RX_ALIGN);
}

static inline void *tx_agg_align(void *data)
{
        return (void *)ALIGN((uintptr_t)data, TX_ALIGN);
}

static void free_rx_agg(struct r8152 *tp, struct rx_agg *agg)
{
        list_del(&agg->info_list);

        usb_free_urb(agg->urb);
        put_page(agg->page);
        kfree(agg);

        atomic_dec(&tp->rx_count);
}

static struct rx_agg *alloc_rx_agg(struct r8152 *tp, gfp_t mflags)
{
        struct net_device *netdev = tp->netdev;
        int node = netdev->dev.parent ? dev_to_node(netdev->dev.parent) : -1;
        unsigned int order = get_order(tp->rx_buf_sz);
        struct rx_agg *rx_agg;
        unsigned long flags;

        rx_agg = kmalloc_node(sizeof(*rx_agg), mflags, node);
        if (!rx_agg)
                return NULL;

        rx_agg->page = alloc_pages(mflags | __GFP_COMP | __GFP_NOWARN, order);
        if (!rx_agg->page)
                goto free_rx;

        rx_agg->buffer = page_address(rx_agg->page);

        rx_agg->urb = usb_alloc_urb(0, mflags);
        if (!rx_agg->urb)
                goto free_buf;

        rx_agg->context = tp;

        INIT_LIST_HEAD(&rx_agg->list);
        INIT_LIST_HEAD(&rx_agg->info_list);
        spin_lock_irqsave(&tp->rx_lock, flags);
        list_add_tail(&rx_agg->info_list, &tp->rx_info);
        spin_unlock_irqrestore(&tp->rx_lock, flags);

        atomic_inc(&tp->rx_count);

        return rx_agg;

free_buf:
        __free_pages(rx_agg->page, order);
free_rx:
        kfree(rx_agg);
        return NULL;
}

static void free_all_mem(struct r8152 *tp)
{
        struct rx_agg *agg, *agg_next;
        unsigned long flags;
        int i;

        spin_lock_irqsave(&tp->rx_lock, flags);

        list_for_each_entry_safe(agg, agg_next, &tp->rx_info, info_list)
                free_rx_agg(tp, agg);

        spin_unlock_irqrestore(&tp->rx_lock, flags);

        WARN_ON(atomic_read(&tp->rx_count));

        for (i = 0; i < RTL8152_MAX_TX; i++) {
                usb_free_urb(tp->tx_info[i].urb);
                tp->tx_info[i].urb = NULL;

                kfree(tp->tx_info[i].buffer);
                tp->tx_info[i].buffer = NULL;
                tp->tx_info[i].head = NULL;
        }

        usb_free_urb(tp->intr_urb);
        tp->intr_urb = NULL;

        kfree(tp->intr_buff);
        tp->intr_buff = NULL;
}

static int alloc_all_mem(struct r8152 *tp)
{
        struct net_device *netdev = tp->netdev;
        struct usb_interface *intf = tp->intf;
        struct usb_host_interface *alt = intf->cur_altsetting;
        struct usb_host_endpoint *ep_intr = alt->endpoint + 2;
        int node, i;

        node = netdev->dev.parent ? dev_to_node(netdev->dev.parent) : -1;

        spin_lock_init(&tp->rx_lock);
        spin_lock_init(&tp->tx_lock);
        INIT_LIST_HEAD(&tp->rx_info);
        INIT_LIST_HEAD(&tp->tx_free);
        INIT_LIST_HEAD(&tp->rx_done);
        skb_queue_head_init(&tp->tx_queue);
        skb_queue_head_init(&tp->rx_queue);
        atomic_set(&tp->rx_count, 0);

        for (i = 0; i < RTL8152_MAX_RX; i++) {
                if (!alloc_rx_agg(tp, GFP_KERNEL))
                        goto err1;
        }

        for (i = 0; i < RTL8152_MAX_TX; i++) {
                struct urb *urb;
                u8 *buf;

                buf = kmalloc_node(agg_buf_sz, GFP_KERNEL, node);
                if (!buf)
                        goto err1;

                if (buf != tx_agg_align(buf)) {
                        kfree(buf);
                        buf = kmalloc_node(agg_buf_sz + TX_ALIGN, GFP_KERNEL,
                                           node);
                        if (!buf)
                                goto err1;
                }

                urb = usb_alloc_urb(0, GFP_KERNEL);
                if (!urb) {
                        kfree(buf);
                        goto err1;
                }

                INIT_LIST_HEAD(&tp->tx_info[i].list);
                tp->tx_info[i].context = tp;
                tp->tx_info[i].urb = urb;
                tp->tx_info[i].buffer = buf;
                tp->tx_info[i].head = tx_agg_align(buf);

                list_add_tail(&tp->tx_info[i].list, &tp->tx_free);
        }

        tp->intr_urb = usb_alloc_urb(0, GFP_KERNEL);
        if (!tp->intr_urb)
                goto err1;

        tp->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL);
        if (!tp->intr_buff)
                goto err1;

        tp->intr_interval = (int)ep_intr->desc.bInterval;
        usb_fill_int_urb(tp->intr_urb, tp->udev, tp->pipe_intr,
                         tp->intr_buff, INTBUFSIZE, intr_callback,
                         tp, tp->intr_interval);

        return 0;

err1:
        free_all_mem(tp);
        return -ENOMEM;
}

static struct tx_agg *r8152_get_tx_agg(struct r8152 *tp)
{
        struct tx_agg *agg = NULL;
        unsigned long flags;

        if (list_empty(&tp->tx_free))
                return NULL;

        spin_lock_irqsave(&tp->tx_lock, flags);
        if (!list_empty(&tp->tx_free)) {
                struct list_head *cursor;

                cursor = tp->tx_free.next;
                list_del_init(cursor);
                agg = list_entry(cursor, struct tx_agg, list);
        }
        spin_unlock_irqrestore(&tp->tx_lock, flags);

        return agg;
}

/* r8152_csum_workaround()
 * The hw limits the value of the transport offset. When the offset is out of
 * range, calculate the checksum by sw.
 */
static void r8152_csum_workaround(struct r8152 *tp, struct sk_buff *skb,
                                  struct sk_buff_head *list)
{
        if (skb_shinfo(skb)->gso_size) {
                netdev_features_t features = tp->netdev->features;
                struct sk_buff *segs, *seg, *next;
                struct sk_buff_head seg_list;

                features &= ~(NETIF_F_SG | NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
                segs = skb_gso_segment(skb, features);
                if (IS_ERR(segs) || !segs)
                        goto drop;

                __skb_queue_head_init(&seg_list);

                skb_list_walk_safe(segs, seg, next) {
                        skb_mark_not_on_list(seg);
                        __skb_queue_tail(&seg_list, seg);
                }

                skb_queue_splice(&seg_list, list);
                dev_kfree_skb(skb);
        } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
                if (skb_checksum_help(skb) < 0)
                        goto drop;

                __skb_queue_head(list, skb);
        } else {
                struct net_device_stats *stats;

drop:
                stats = &tp->netdev->stats;
                stats->tx_dropped++;
                dev_kfree_skb(skb);
        }
}

static inline void rtl_tx_vlan_tag(struct tx_desc *desc, struct sk_buff *skb)
{
        if (skb_vlan_tag_present(skb)) {
                u32 opts2;

                opts2 = TX_VLAN_TAG | swab16(skb_vlan_tag_get(skb));
                desc->opts2 |= cpu_to_le32(opts2);
        }
}

static inline void rtl_rx_vlan_tag(struct rx_desc *desc, struct sk_buff *skb)
{
        u32 opts2 = le32_to_cpu(desc->opts2);

        if (opts2 & RX_VLAN_TAG)
                __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
                                       swab16(opts2 & 0xffff));
}

static int r8152_tx_csum(struct r8152 *tp, struct tx_desc *desc,
                         struct sk_buff *skb, u32 len)
{
        u32 mss = skb_shinfo(skb)->gso_size;
        u32 opts1, opts2 = 0;
        int ret = TX_CSUM_SUCCESS;

        WARN_ON_ONCE(len > TX_LEN_MAX);

        opts1 = len | TX_FS | TX_LS;

        if (mss) {
                u32 transport_offset = (u32)skb_transport_offset(skb);

                if (transport_offset > GTTCPHO_MAX) {
                        netif_warn(tp, tx_err, tp->netdev,
                                   "Invalid transport offset 0x%x for TSO\n",
                                   transport_offset);
                        ret = TX_CSUM_TSO;
                        goto unavailable;
                }

                switch (vlan_get_protocol(skb)) {
                case htons(ETH_P_IP):
                        opts1 |= GTSENDV4;
                        break;

                case htons(ETH_P_IPV6):
                        if (skb_cow_head(skb, 0)) {
                                ret = TX_CSUM_TSO;
                                goto unavailable;
                        }
                        tcp_v6_gso_csum_prep(skb);
                        opts1 |= GTSENDV6;
                        break;

                default:
                        WARN_ON_ONCE(1);
                        break;
                }

                opts1 |= transport_offset << GTTCPHO_SHIFT;
                opts2 |= min(mss, MSS_MAX) << MSS_SHIFT;
        } else if (skb->ip_summed == CHECKSUM_PARTIAL) {
                u32 transport_offset = (u32)skb_transport_offset(skb);
                u8 ip_protocol;

                if (transport_offset > TCPHO_MAX) {
                        netif_warn(tp, tx_err, tp->netdev,
                                   "Invalid transport offset 0x%x\n",
                                   transport_offset);
                        ret = TX_CSUM_NONE;
                        goto unavailable;
                }

                switch (vlan_get_protocol(skb)) {
                case htons(ETH_P_IP):
                        opts2 |= IPV4_CS;
                        ip_protocol = ip_hdr(skb)->protocol;
                        break;

                case htons(ETH_P_IPV6):
                        opts2 |= IPV6_CS;
                        ip_protocol = ipv6_hdr(skb)->nexthdr;
                        break;

                default:
                        ip_protocol = IPPROTO_RAW;
                        break;
                }

                if (ip_protocol == IPPROTO_TCP)
                        opts2 |= TCP_CS;
                else if (ip_protocol == IPPROTO_UDP)
                        opts2 |= UDP_CS;
                else
                        WARN_ON_ONCE(1);

                opts2 |= transport_offset << TCPHO_SHIFT;
        }

        desc->opts2 = cpu_to_le32(opts2);
        desc->opts1 = cpu_to_le32(opts1);

unavailable:
        return ret;
}

static int r8152_tx_agg_fill(struct r8152 *tp, struct tx_agg *agg)
{
        struct sk_buff_head skb_head, *tx_queue = &tp->tx_queue;
        int remain, ret;
        u8 *tx_data;

        __skb_queue_head_init(&skb_head);
        spin_lock(&tx_queue->lock);
        skb_queue_splice_init(tx_queue, &skb_head);
        spin_unlock(&tx_queue->lock);

        tx_data = agg->head;
        agg->skb_num = 0;
        agg->skb_len = 0;
        remain = agg_buf_sz;

        while (remain >= ETH_ZLEN + sizeof(struct tx_desc)) {
                struct tx_desc *tx_desc;
                struct sk_buff *skb;
                unsigned int len;

                skb = __skb_dequeue(&skb_head);
                if (!skb)
                        break;

                len = skb->len + sizeof(*tx_desc);

                if (len > remain) {
                        __skb_queue_head(&skb_head, skb);
                        break;
                }

                tx_data = tx_agg_align(tx_data);
                tx_desc = (struct tx_desc *)tx_data;

                if (r8152_tx_csum(tp, tx_desc, skb, skb->len)) {
                        r8152_csum_workaround(tp, skb, &skb_head);
                        continue;
                }

                rtl_tx_vlan_tag(tx_desc, skb);

                tx_data += sizeof(*tx_desc);

                len = skb->len;
                if (skb_copy_bits(skb, 0, tx_data, len) < 0) {
                        struct net_device_stats *stats = &tp->netdev->stats;

                        stats->tx_dropped++;
                        dev_kfree_skb_any(skb);
                        tx_data -= sizeof(*tx_desc);
                        continue;
                }

                tx_data += len;
                agg->skb_len += len;
                agg->skb_num += skb_shinfo(skb)->gso_segs ?: 1;

                dev_kfree_skb_any(skb);

                remain = agg_buf_sz - (int)(tx_agg_align(tx_data) - agg->head);

                if (tp->dell_tb_rx_agg_bug)
                        break;
        }

        if (!skb_queue_empty(&skb_head)) {
                spin_lock(&tx_queue->lock);
                skb_queue_splice(&skb_head, tx_queue);
                spin_unlock(&tx_queue->lock);
        }

        netif_tx_lock(tp->netdev);

        if (netif_queue_stopped(tp->netdev) &&
            skb_queue_len(&tp->tx_queue) < tp->tx_qlen)
                netif_wake_queue(tp->netdev);

        netif_tx_unlock(tp->netdev);

        ret = usb_autopm_get_interface_async(tp->intf);
        if (ret < 0)
                goto out_tx_fill;

        usb_fill_bulk_urb(agg->urb, tp->udev, tp->pipe_out,
                          agg->head, (int)(tx_data - (u8 *)agg->head),
                          (usb_complete_t)write_bulk_callback, agg);

        ret = usb_submit_urb(agg->urb, GFP_ATOMIC);
        if (ret < 0)
                usb_autopm_put_interface_async(tp->intf);

out_tx_fill:
        return ret;
}

static u8 r8152_rx_csum(struct r8152 *tp, struct rx_desc *rx_desc)
{
        u8 checksum = CHECKSUM_NONE;
        u32 opts2, opts3;

        if (!(tp->netdev->features & NETIF_F_RXCSUM))
                goto return_result;

        opts2 = le32_to_cpu(rx_desc->opts2);
        opts3 = le32_to_cpu(rx_desc->opts3);

        if (opts2 & RD_IPV4_CS) {
                if (opts3 & IPF)
                        checksum = CHECKSUM_NONE;
                else if ((opts2 & RD_UDP_CS) && !(opts3 & UDPF))
                        checksum = CHECKSUM_UNNECESSARY;
                else if ((opts2 & RD_TCP_CS) && !(opts3 & TCPF))
                        checksum = CHECKSUM_UNNECESSARY;
        } else if (opts2 & RD_IPV6_CS) {
                if ((opts2 & RD_UDP_CS) && !(opts3 & UDPF))
                        checksum = CHECKSUM_UNNECESSARY;
                else if ((opts2 & RD_TCP_CS) && !(opts3 & TCPF))
                        checksum = CHECKSUM_UNNECESSARY;
        }

return_result:
        return checksum;
}

static inline bool rx_count_exceed(struct r8152 *tp)
{
        return atomic_read(&tp->rx_count) > RTL8152_MAX_RX;
}

static inline int agg_offset(struct rx_agg *agg, void *addr)
{
        return (int)(addr - agg->buffer);
}

static struct rx_agg *rtl_get_free_rx(struct r8152 *tp, gfp_t mflags)
{
        struct rx_agg *agg, *agg_next, *agg_free = NULL;
        unsigned long flags;

        spin_lock_irqsave(&tp->rx_lock, flags);

        list_for_each_entry_safe(agg, agg_next, &tp->rx_used, list) {
                if (page_count(agg->page) == 1) {
                        if (!agg_free) {
                                list_del_init(&agg->list);
                                agg_free = agg;
                                continue;
                        }
                        if (rx_count_exceed(tp)) {
                                list_del_init(&agg->list);
                                free_rx_agg(tp, agg);
                        }
                        break;
                }
        }

        spin_unlock_irqrestore(&tp->rx_lock, flags);

        if (!agg_free && atomic_read(&tp->rx_count) < tp->rx_pending)
                agg_free = alloc_rx_agg(tp, mflags);

        return agg_free;
}

static int rx_bottom(struct r8152 *tp, int budget)
{
        unsigned long flags;
        struct list_head *cursor, *next, rx_queue;
        int ret = 0, work_done = 0;
        struct napi_struct *napi = &tp->napi;

        if (!skb_queue_empty(&tp->rx_queue)) {
                while (work_done < budget) {
                        struct sk_buff *skb = __skb_dequeue(&tp->rx_queue);
                        struct net_device *netdev = tp->netdev;
                        struct net_device_stats *stats = &netdev->stats;
                        unsigned int pkt_len;

                        if (!skb)
                                break;

                        pkt_len = skb->len;
                        napi_gro_receive(napi, skb);
                        work_done++;
                        stats->rx_packets++;
                        stats->rx_bytes += pkt_len;
                }
        }

        if (list_empty(&tp->rx_done) || work_done >= budget)
                goto out1;

        clear_bit(RX_EPROTO, &tp->flags);
        INIT_LIST_HEAD(&rx_queue);
        spin_lock_irqsave(&tp->rx_lock, flags);
        list_splice_init(&tp->rx_done, &rx_queue);
        spin_unlock_irqrestore(&tp->rx_lock, flags);

        list_for_each_safe(cursor, next, &rx_queue) {
                struct rx_desc *rx_desc;
                struct rx_agg *agg, *agg_free;
                int len_used = 0;
                struct urb *urb;
                u8 *rx_data;

                /* A bulk transfer of USB may contain may packets, so the
                 * total packets may more than the budget. Deal with all
                 * packets in current bulk transfer, and stop to handle the
                 * next bulk transfer until next schedule, if budget is
                 * exhausted.
                 */
                if (work_done >= budget)
                        break;

                list_del_init(cursor);

                agg = list_entry(cursor, struct rx_agg, list);
                urb = agg->urb;
                if (urb->status != 0 || urb->actual_length < ETH_ZLEN)
                        goto submit;

                agg_free = rtl_get_free_rx(tp, GFP_ATOMIC);

                rx_desc = agg->buffer;
                rx_data = agg->buffer;
                len_used += sizeof(struct rx_desc);

                while (urb->actual_length > len_used) {
                        struct net_device *netdev = tp->netdev;
                        struct net_device_stats *stats = &netdev->stats;
                        unsigned int pkt_len, rx_frag_head_sz, len;
                        struct sk_buff *skb;
                        bool use_frags;

                        WARN_ON_ONCE(skb_queue_len(&tp->rx_queue) >= 1000);

                        pkt_len = le32_to_cpu(rx_desc->opts1) & RX_LEN_MASK;
                        if (pkt_len < ETH_ZLEN)
                                break;

                        len_used += pkt_len;
                        if (urb->actual_length < len_used)
                                break;

                        pkt_len -= ETH_FCS_LEN;
                        len = pkt_len;
                        rx_data += sizeof(struct rx_desc);

                        if (!agg_free || tp->rx_copybreak > len)
                                use_frags = false;
                        else
                                use_frags = true;

                        if (use_frags) {
                                /* If the budget is exhausted, the packet
                                 * would be queued in the driver. That is,
                                 * napi_gro_frags() wouldn't be called, so
                                 * we couldn't use napi_get_frags().
                                 */
                                if (work_done >= budget) {
                                        rx_frag_head_sz = tp->rx_copybreak;
                                        skb = napi_alloc_skb(napi,
                                                             rx_frag_head_sz);
                                } else {
                                        rx_frag_head_sz = 0;
                                        skb = napi_get_frags(napi);
                                }
                        } else {
                                rx_frag_head_sz = 0;
                                skb = napi_alloc_skb(napi, len);
                        }

                        if (!skb) {
                                stats->rx_dropped++;
                                goto find_next_rx;
                        }

                        skb->ip_summed = r8152_rx_csum(tp, rx_desc);
                        rtl_rx_vlan_tag(rx_desc, skb);

                        if (use_frags) {
                                if (rx_frag_head_sz) {
                                        memcpy(skb->data, rx_data,
                                               rx_frag_head_sz);
                                        skb_put(skb, rx_frag_head_sz);
                                        len -= rx_frag_head_sz;
                                        rx_data += rx_frag_head_sz;
                                        skb->protocol = eth_type_trans(skb,
                                                                       netdev);
                                }

                                skb_add_rx_frag(skb, 0, agg->page,
                                                agg_offset(agg, rx_data),
                                                len, SKB_DATA_ALIGN(len));
                                get_page(agg->page);
                        } else {
                                memcpy(skb->data, rx_data, len);
                                skb_put(skb, len);
                                skb->protocol = eth_type_trans(skb, netdev);
                        }

                        if (work_done < budget) {
                                if (use_frags)
                                        napi_gro_frags(napi);
                                else
                                        napi_gro_receive(napi, skb);

                                work_done++;
                                stats->rx_packets++;
                                stats->rx_bytes += pkt_len;
                        } else {
                                __skb_queue_tail(&tp->rx_queue, skb);
                        }

find_next_rx:
                        rx_data = rx_agg_align(rx_data + len + ETH_FCS_LEN);
                        rx_desc = (struct rx_desc *)rx_data;
                        len_used = agg_offset(agg, rx_data);
                        len_used += sizeof(struct rx_desc);
                }

                WARN_ON(!agg_free && page_count(agg->page) > 1);

                if (agg_free) {
                        spin_lock_irqsave(&tp->rx_lock, flags);
                        if (page_count(agg->page) == 1) {
                                list_add(&agg_free->list, &tp->rx_used);
                        } else {
                                list_add_tail(&agg->list, &tp->rx_used);
                                agg = agg_free;
                                urb = agg->urb;
                        }
                        spin_unlock_irqrestore(&tp->rx_lock, flags);
                }

submit:
                if (!ret) {
                        ret = r8152_submit_rx(tp, agg, GFP_ATOMIC);
                } else {
                        urb->actual_length = 0;
                        list_add_tail(&agg->list, next);
                }
        }

        /* Splice the remained list back to rx_done for next schedule */
        if (!list_empty(&rx_queue)) {
                spin_lock_irqsave(&tp->rx_lock, flags);
                list_splice(&rx_queue, &tp->rx_done);
                spin_unlock_irqrestore(&tp->rx_lock, flags);
        }

out1:
        return work_done;
}

static void tx_bottom(struct r8152 *tp)
{
        int res;

        do {
                struct net_device *netdev = tp->netdev;
                struct tx_agg *agg;

                if (skb_queue_empty(&tp->tx_queue))
                        break;

                agg = r8152_get_tx_agg(tp);
                if (!agg)
                        break;

                res = r8152_tx_agg_fill(tp, agg);
                if (!res)
                        continue;

                if (res == -ENODEV) {
                        rtl_set_unplug(tp);
                        netif_device_detach(netdev);
                } else {
                        struct net_device_stats *stats = &netdev->stats;
                        unsigned long flags;

                        netif_warn(tp, tx_err, netdev,
                                   "failed tx_urb %d\n", res);
                        stats->tx_dropped += agg->skb_num;

                        spin_lock_irqsave(&tp->tx_lock, flags);
                        list_add_tail(&agg->list, &tp->tx_free);
                        spin_unlock_irqrestore(&tp->tx_lock, flags);
                }
        } while (res == 0);
}

static void bottom_half(struct tasklet_struct *t)
{
        struct r8152 *tp = from_tasklet(tp, t, tx_tl);

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        if (!test_bit(WORK_ENABLE, &tp->flags))
                return;

        /* When link down, the driver would cancel all bulks. */
        /* This avoid the re-submitting bulk */
        if (!netif_carrier_ok(tp->netdev))
                return;

        clear_bit(SCHEDULE_TASKLET, &tp->flags);

        tx_bottom(tp);
}

static int r8152_poll(struct napi_struct *napi, int budget)
{
        struct r8152 *tp = container_of(napi, struct r8152, napi);
        int work_done;

        if (!budget)
                return 0;

        work_done = rx_bottom(tp, budget);

        if (work_done < budget) {
                if (!napi_complete_done(napi, work_done))
                        goto out;
                if (!list_empty(&tp->rx_done))
                        napi_schedule(napi);
        }

out:
        return work_done;
}

static
int r8152_submit_rx(struct r8152 *tp, struct rx_agg *agg, gfp_t mem_flags)
{
        int ret;

        /* The rx would be stopped, so skip submitting */
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags) ||
            !test_bit(WORK_ENABLE, &tp->flags) || !netif_carrier_ok(tp->netdev))
                return 0;

        usb_fill_bulk_urb(agg->urb, tp->udev, tp->pipe_in,
                          agg->buffer, tp->rx_buf_sz,
                          (usb_complete_t)read_bulk_callback, agg);

        ret = usb_submit_urb(agg->urb, mem_flags);
        if (ret == -ENODEV) {
                rtl_set_unplug(tp);
                netif_device_detach(tp->netdev);
        } else if (ret) {
                struct urb *urb = agg->urb;
                unsigned long flags;

                urb->actual_length = 0;
                spin_lock_irqsave(&tp->rx_lock, flags);
                list_add_tail(&agg->list, &tp->rx_done);
                spin_unlock_irqrestore(&tp->rx_lock, flags);

                netif_err(tp, rx_err, tp->netdev,
                          "Couldn't submit rx[%p], ret = %d\n", agg, ret);

                napi_schedule(&tp->napi);
        }

        return ret;
}

static void rtl_drop_queued_tx(struct r8152 *tp)
{
        struct net_device_stats *stats = &tp->netdev->stats;
        struct sk_buff_head skb_head, *tx_queue = &tp->tx_queue;
        struct sk_buff *skb;

        if (skb_queue_empty(tx_queue))
                return;

        __skb_queue_head_init(&skb_head);
        spin_lock_bh(&tx_queue->lock);
        skb_queue_splice_init(tx_queue, &skb_head);
        spin_unlock_bh(&tx_queue->lock);

        while ((skb = __skb_dequeue(&skb_head))) {
                dev_kfree_skb(skb);
                stats->tx_dropped++;
        }
}

static void rtl8152_tx_timeout(struct net_device *netdev, unsigned int txqueue)
{
        struct r8152 *tp = netdev_priv(netdev);

        netif_warn(tp, tx_err, netdev, "Tx timeout\n");

        usb_queue_reset_device(tp->intf);
}

static void rtl8152_set_rx_mode(struct net_device *netdev)
{
        struct r8152 *tp = netdev_priv(netdev);

        if (netif_carrier_ok(netdev)) {
                set_bit(RTL8152_SET_RX_MODE, &tp->flags);
                schedule_delayed_work(&tp->schedule, 0);
        }
}

static void _rtl8152_set_rx_mode(struct net_device *netdev)
{
        struct r8152 *tp = netdev_priv(netdev);
        u32 mc_filter[2];       /* Multicast hash filter */
        __le32 tmp[2];
        u32 ocp_data;

        netif_stop_queue(netdev);
        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data &= ~RCR_ACPT_ALL;
        ocp_data |= RCR_AB | RCR_APM;

        if (netdev->flags & IFF_PROMISC) {
                /* Unconditionally log net taps. */
                netif_notice(tp, link, netdev, "Promiscuous mode enabled\n");
                ocp_data |= RCR_AM | RCR_AAP;
                mc_filter[1] = 0xffffffff;
                mc_filter[0] = 0xffffffff;
        } else if ((netdev->flags & IFF_MULTICAST &&
                                netdev_mc_count(netdev) > multicast_filter_limit) ||
                           (netdev->flags & IFF_ALLMULTI)) {
                /* Too many to filter perfectly -- accept all multicasts. */
                ocp_data |= RCR_AM;
                mc_filter[1] = 0xffffffff;
                mc_filter[0] = 0xffffffff;
        } else {
                mc_filter[1] = 0;
                mc_filter[0] = 0;

                if (netdev->flags & IFF_MULTICAST) {
                        struct netdev_hw_addr *ha;

                        netdev_for_each_mc_addr(ha, netdev) {
                                int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;

                                mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
                                ocp_data |= RCR_AM;
                        }
                }
        }

        tmp[0] = __cpu_to_le32(swab32(mc_filter[1]));
        tmp[1] = __cpu_to_le32(swab32(mc_filter[0]));

        pla_ocp_write(tp, PLA_MAR, BYTE_EN_DWORD, sizeof(tmp), tmp);
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);
        netif_wake_queue(netdev);
}

static netdev_features_t
rtl8152_features_check(struct sk_buff *skb, struct net_device *dev,
                       netdev_features_t features)
{
        u32 mss = skb_shinfo(skb)->gso_size;
        int max_offset = mss ? GTTCPHO_MAX : TCPHO_MAX;

        if ((mss || skb->ip_summed == CHECKSUM_PARTIAL) &&
            skb_transport_offset(skb) > max_offset)
                features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
        else if ((skb->len + sizeof(struct tx_desc)) > agg_buf_sz)
                features &= ~NETIF_F_GSO_MASK;

        return features;
}

static netdev_tx_t rtl8152_start_xmit(struct sk_buff *skb,
                                      struct net_device *netdev)
{
        struct r8152 *tp = netdev_priv(netdev);

        skb_tx_timestamp(skb);

        skb_queue_tail(&tp->tx_queue, skb);

        if (!list_empty(&tp->tx_free)) {
                if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
                        set_bit(SCHEDULE_TASKLET, &tp->flags);
                        schedule_delayed_work(&tp->schedule, 0);
                } else {
                        usb_mark_last_busy(tp->udev);
                        tasklet_schedule(&tp->tx_tl);
                }
        } else if (skb_queue_len(&tp->tx_queue) > tp->tx_qlen) {
                netif_stop_queue(netdev);
        }

        return NETDEV_TX_OK;
}

static void r8152b_reset_packet_filter(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_FMC);
        ocp_data &= ~FMC_FCR_MCU_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_FMC, ocp_data);
        ocp_data |= FMC_FCR_MCU_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_FMC, ocp_data);
}

static void rtl8152_nic_reset(struct r8152 *tp)
{
        u32 ocp_data;
        int i;

        switch (tp->version) {
        case RTL_TEST_01:
        case RTL_VER_10:
        case RTL_VER_11:
                ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CR);
                ocp_data &= ~CR_TE;
                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, ocp_data);

                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_BMU_RESET);
                ocp_data &= ~BMU_RESET_EP_IN;
                ocp_write_word(tp, MCU_TYPE_USB, USB_BMU_RESET, ocp_data);

                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
                ocp_data |= CDC_ECM_EN;
                ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CR);
                ocp_data &= ~CR_RE;
                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, ocp_data);

                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_BMU_RESET);
                ocp_data |= BMU_RESET_EP_IN;
                ocp_write_word(tp, MCU_TYPE_USB, USB_BMU_RESET, ocp_data);

                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
                ocp_data &= ~CDC_ECM_EN;
                ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);
                break;

        default:
                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, CR_RST);

                for (i = 0; i < 1000; i++) {
                        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                                break;
                        if (!(ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CR) & CR_RST))
                                break;
                        usleep_range(100, 400);
                }
                break;
        }
}

static void set_tx_qlen(struct r8152 *tp)
{
        tp->tx_qlen = agg_buf_sz / (mtu_to_size(tp->netdev->mtu) + sizeof(struct tx_desc));
}

static inline u16 rtl8152_get_speed(struct r8152 *tp)
{
        return ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHYSTATUS);
}

static void rtl_eee_plus_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR);
        if (enable)
                ocp_data |= EEEP_CR_EEEP_TX;
        else
                ocp_data &= ~EEEP_CR_EEEP_TX;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR, ocp_data);
}

static void rtl_set_eee_plus(struct r8152 *tp)
{
        if (rtl8152_get_speed(tp) & _10bps)
                rtl_eee_plus_en(tp, true);
        else
                rtl_eee_plus_en(tp, false);
}

static void rxdy_gated_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MISC_1);
        if (enable)
                ocp_data |= RXDY_GATED_EN;
        else
                ocp_data &= ~RXDY_GATED_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MISC_1, ocp_data);
}

static int rtl_start_rx(struct r8152 *tp)
{
        struct rx_agg *agg, *agg_next;
        struct list_head tmp_list;
        unsigned long flags;
        int ret = 0, i = 0;

        INIT_LIST_HEAD(&tmp_list);

        spin_lock_irqsave(&tp->rx_lock, flags);

        INIT_LIST_HEAD(&tp->rx_done);
        INIT_LIST_HEAD(&tp->rx_used);

        list_splice_init(&tp->rx_info, &tmp_list);

        spin_unlock_irqrestore(&tp->rx_lock, flags);

        list_for_each_entry_safe(agg, agg_next, &tmp_list, info_list) {
                INIT_LIST_HEAD(&agg->list);

                /* Only RTL8152_MAX_RX rx_agg need to be submitted. */
                if (++i > RTL8152_MAX_RX) {
                        spin_lock_irqsave(&tp->rx_lock, flags);
                        list_add_tail(&agg->list, &tp->rx_used);
                        spin_unlock_irqrestore(&tp->rx_lock, flags);
                } else if (unlikely(ret < 0)) {
                        spin_lock_irqsave(&tp->rx_lock, flags);
                        list_add_tail(&agg->list, &tp->rx_done);
                        spin_unlock_irqrestore(&tp->rx_lock, flags);
                } else {
                        ret = r8152_submit_rx(tp, agg, GFP_KERNEL);
                }
        }

        spin_lock_irqsave(&tp->rx_lock, flags);
        WARN_ON(!list_empty(&tp->rx_info));
        list_splice(&tmp_list, &tp->rx_info);
        spin_unlock_irqrestore(&tp->rx_lock, flags);

        return ret;
}

static int rtl_stop_rx(struct r8152 *tp)
{
        struct rx_agg *agg, *agg_next;
        struct list_head tmp_list;
        unsigned long flags;

        INIT_LIST_HEAD(&tmp_list);

        /* The usb_kill_urb() couldn't be used in atomic.
         * Therefore, move the list of rx_info to a tmp one.
         * Then, list_for_each_entry_safe could be used without
         * spin lock.
         */

        spin_lock_irqsave(&tp->rx_lock, flags);
        list_splice_init(&tp->rx_info, &tmp_list);
        spin_unlock_irqrestore(&tp->rx_lock, flags);

        list_for_each_entry_safe(agg, agg_next, &tmp_list, info_list) {
                /* At least RTL8152_MAX_RX rx_agg have the page_count being
                 * equal to 1, so the other ones could be freed safely.
                 */
                if (page_count(agg->page) > 1)
                        free_rx_agg(tp, agg);
                else
                        usb_kill_urb(agg->urb);
        }

        /* Move back the list of temp to the rx_info */
        spin_lock_irqsave(&tp->rx_lock, flags);
        WARN_ON(!list_empty(&tp->rx_info));
        list_splice(&tmp_list, &tp->rx_info);
        spin_unlock_irqrestore(&tp->rx_lock, flags);

        while (!skb_queue_empty(&tp->rx_queue))
                dev_kfree_skb(__skb_dequeue(&tp->rx_queue));

        return 0;
}

static void rtl_set_ifg(struct r8152 *tp, u16 speed)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR1);
        ocp_data &= ~IFG_MASK;
        if ((speed & (_10bps | _100bps)) && !(speed & FULL_DUP)) {
                ocp_data |= IFG_144NS;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_TCR1, ocp_data);

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4);
                ocp_data &= ~TX10MIDLE_EN;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, ocp_data);
        } else {
                ocp_data |= IFG_96NS;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_TCR1, ocp_data);

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4);
                ocp_data |= TX10MIDLE_EN;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, ocp_data);
        }
}

static inline void r8153b_rx_agg_chg_indicate(struct r8152 *tp)
{
        ocp_write_byte(tp, MCU_TYPE_USB, USB_UPT_RXDMA_OWN,
                       OWN_UPDATE | OWN_CLEAR);
}

static int rtl_enable(struct r8152 *tp)
{
        u32 ocp_data;

        r8152b_reset_packet_filter(tp);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CR);
        ocp_data |= CR_RE | CR_TE;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, ocp_data);

        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
        case RTL_VER_07:
                break;
        default:
                r8153b_rx_agg_chg_indicate(tp);
                break;
        }

        rxdy_gated_en(tp, false);

        return 0;
}

static int rtl8152_enable(struct r8152 *tp)
{
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        set_tx_qlen(tp);
        rtl_set_eee_plus(tp);

        return rtl_enable(tp);
}

static void r8153_set_rx_early_timeout(struct r8152 *tp)
{
        u32 ocp_data = tp->coalesce / 8;

        switch (tp->version) {
        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
                ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_TIMEOUT,
                               ocp_data);
                break;

        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_VER_14:
                /* The RTL8153B uses USB_RX_EXTRA_AGGR_TMR for rx timeout
                 * primarily. For USB_RX_EARLY_TIMEOUT, we fix it to 128ns.
                 */
                ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_TIMEOUT,
                               128 / 8);
                ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EXTRA_AGGR_TMR,
                               ocp_data);
                break;

        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
                ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_TIMEOUT,
                               640 / 8);
                ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EXTRA_AGGR_TMR,
                               ocp_data);
                break;

        default:
                break;
        }
}

static void r8153_set_rx_early_size(struct r8152 *tp)
{
        u32 ocp_data = tp->rx_buf_sz - rx_reserved_size(tp->netdev->mtu);

        switch (tp->version) {
        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
                ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_SIZE,
                               ocp_data / 4);
                break;
        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_VER_14:
                ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_SIZE,
                               ocp_data / 8);
                break;
        case RTL_TEST_01:
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
                ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_SIZE,
                               ocp_data / 8);
                break;
        default:
                WARN_ON_ONCE(1);
                break;
        }
}

static int rtl8153_enable(struct r8152 *tp)
{
        u32 ocp_data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        set_tx_qlen(tp);
        rtl_set_eee_plus(tp);
        r8153_set_rx_early_timeout(tp);
        r8153_set_rx_early_size(tp);

        rtl_set_ifg(tp, rtl8152_get_speed(tp));

        switch (tp->version) {
        case RTL_VER_09:
        case RTL_VER_14:
                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_TASK);
                ocp_data &= ~FC_PATCH_TASK;
                ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);
                usleep_range(1000, 2000);
                ocp_data |= FC_PATCH_TASK;
                ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);
                break;
        default:
                break;
        }

        return rtl_enable(tp);
}

static void rtl_disable(struct r8152 *tp)
{
        u32 ocp_data;
        int i;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags)) {
                rtl_drop_queued_tx(tp);
                return;
        }

        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data &= ~RCR_ACPT_ALL;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);

        rtl_drop_queued_tx(tp);

        for (i = 0; i < RTL8152_MAX_TX; i++)
                usb_kill_urb(tp->tx_info[i].urb);

        rxdy_gated_en(tp, true);

        for (i = 0; i < 1000; i++) {
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        break;
                ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
                if ((ocp_data & FIFO_EMPTY) == FIFO_EMPTY)
                        break;
                usleep_range(1000, 2000);
        }

        for (i = 0; i < 1000; i++) {
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        break;
                if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0) & TCR0_TX_EMPTY)
                        break;
                usleep_range(1000, 2000);
        }

        rtl_stop_rx(tp);

        rtl8152_nic_reset(tp);
}

static void r8152_power_cut_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_UPS_CTRL);
        if (enable)
                ocp_data |= POWER_CUT;
        else
                ocp_data &= ~POWER_CUT;
        ocp_write_word(tp, MCU_TYPE_USB, USB_UPS_CTRL, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_PM_CTRL_STATUS);
        ocp_data &= ~RESUME_INDICATE;
        ocp_write_word(tp, MCU_TYPE_USB, USB_PM_CTRL_STATUS, ocp_data);
}

static void rtl_rx_vlan_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
        case RTL_VER_07:
        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_VER_14:
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CPCR);
                if (enable)
                        ocp_data |= CPCR_RX_VLAN;
                else
                        ocp_data &= ~CPCR_RX_VLAN;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_CPCR, ocp_data);
                break;

        case RTL_TEST_01:
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
        default:
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_RCR1);
                if (enable)
                        ocp_data |= OUTER_VLAN | INNER_VLAN;
                else
                        ocp_data &= ~(OUTER_VLAN | INNER_VLAN);
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_RCR1, ocp_data);
                break;
        }
}

static int rtl8152_set_features(struct net_device *dev,
                                netdev_features_t features)
{
        netdev_features_t changed = features ^ dev->features;
        struct r8152 *tp = netdev_priv(dev);
        int ret;

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                goto out;

        mutex_lock(&tp->control);

        if (changed & NETIF_F_HW_VLAN_CTAG_RX) {
                if (features & NETIF_F_HW_VLAN_CTAG_RX)
                        rtl_rx_vlan_en(tp, true);
                else
                        rtl_rx_vlan_en(tp, false);
        }

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

out:
        return ret;
}

#define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST)

static u32 __rtl_get_wol(struct r8152 *tp)
{
        u32 ocp_data;
        u32 wolopts = 0;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34);
        if (ocp_data & LINK_ON_WAKE_EN)
                wolopts |= WAKE_PHY;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG5);
        if (ocp_data & UWF_EN)
                wolopts |= WAKE_UCAST;
        if (ocp_data & BWF_EN)
                wolopts |= WAKE_BCAST;
        if (ocp_data & MWF_EN)
                wolopts |= WAKE_MCAST;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CFG_WOL);
        if (ocp_data & MAGIC_EN)
                wolopts |= WAKE_MAGIC;

        return wolopts;
}

static void __rtl_set_wol(struct r8152 *tp, u32 wolopts)
{
        u32 ocp_data;

        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34);
        ocp_data &= ~LINK_ON_WAKE_EN;
        if (wolopts & WAKE_PHY)
                ocp_data |= LINK_ON_WAKE_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG34, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG5);
        ocp_data &= ~(UWF_EN | BWF_EN | MWF_EN);
        if (wolopts & WAKE_UCAST)
                ocp_data |= UWF_EN;
        if (wolopts & WAKE_BCAST)
                ocp_data |= BWF_EN;
        if (wolopts & WAKE_MCAST)
                ocp_data |= MWF_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG5, ocp_data);

        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CFG_WOL);
        ocp_data &= ~MAGIC_EN;
        if (wolopts & WAKE_MAGIC)
                ocp_data |= MAGIC_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_CFG_WOL, ocp_data);

        if (wolopts & WAKE_ANY)
                device_set_wakeup_enable(&tp->udev->dev, true);
        else
                device_set_wakeup_enable(&tp->udev->dev, false);
}

static void r8153_mac_clk_speed_down(struct r8152 *tp, bool enable)
{
        u32 ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2);

        /* MAC clock speed down */
        if (enable)
                ocp_data |= MAC_CLK_SPDWN_EN;
        else
                ocp_data &= ~MAC_CLK_SPDWN_EN;

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, ocp_data);
}

static void r8156_mac_clk_spd(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        /* MAC clock speed down */
        if (enable) {
                /* aldps_spdwn_ratio, tp10_spdwn_ratio */
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL,
                               0x0403);

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2);
                ocp_data &= ~EEE_SPDWN_RATIO_MASK;
                ocp_data |= MAC_CLK_SPDWN_EN | 0x03; /* eee_spdwn_ratio */
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, ocp_data);
        } else {
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2);
                ocp_data &= ~MAC_CLK_SPDWN_EN;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, ocp_data);
        }
}

static void r8153_u1u2en(struct r8152 *tp, bool enable)
{
        u8 u1u2[8];

        if (enable)
                memset(u1u2, 0xff, sizeof(u1u2));
        else
                memset(u1u2, 0x00, sizeof(u1u2));

        usb_ocp_write(tp, USB_TOLERANCE, BYTE_EN_SIX_BYTES, sizeof(u1u2), u1u2);
}

static void r8153b_u1u2en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_LPM_CONFIG);
        if (enable)
                ocp_data |= LPM_U1U2_EN;
        else
                ocp_data &= ~LPM_U1U2_EN;

        ocp_write_word(tp, MCU_TYPE_USB, USB_LPM_CONFIG, ocp_data);
}

static void r8153_u2p3en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL);
        if (enable)
                ocp_data |= U2P3_ENABLE;
        else
                ocp_data &= ~U2P3_ENABLE;
        ocp_write_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL, ocp_data);
}

static void r8153b_ups_flags(struct r8152 *tp)
{
        u32 ups_flags = 0;

        if (tp->ups_info.green)
                ups_flags |= UPS_FLAGS_EN_GREEN;

        if (tp->ups_info.aldps)
                ups_flags |= UPS_FLAGS_EN_ALDPS;

        if (tp->ups_info.eee)
                ups_flags |= UPS_FLAGS_EN_EEE;

        if (tp->ups_info.flow_control)
                ups_flags |= UPS_FLAGS_EN_FLOW_CTR;

        if (tp->ups_info.eee_ckdiv)
                ups_flags |= UPS_FLAGS_EN_EEE_CKDIV;

        if (tp->ups_info.eee_cmod_lv)
                ups_flags |= UPS_FLAGS_EEE_CMOD_LV_EN;

        if (tp->ups_info.r_tune)
                ups_flags |= UPS_FLAGS_R_TUNE;

        if (tp->ups_info._10m_ckdiv)
                ups_flags |= UPS_FLAGS_EN_10M_CKDIV;

        if (tp->ups_info.eee_plloff_100)
                ups_flags |= UPS_FLAGS_EEE_PLLOFF_100;

        if (tp->ups_info.eee_plloff_giga)
                ups_flags |= UPS_FLAGS_EEE_PLLOFF_GIGA;

        if (tp->ups_info._250m_ckdiv)
                ups_flags |= UPS_FLAGS_250M_CKDIV;

        if (tp->ups_info.ctap_short_off)
                ups_flags |= UPS_FLAGS_CTAP_SHORT_DIS;

        switch (tp->ups_info.speed_duplex) {
        case NWAY_10M_HALF:
                ups_flags |= ups_flags_speed(1);
                break;
        case NWAY_10M_FULL:
                ups_flags |= ups_flags_speed(2);
                break;
        case NWAY_100M_HALF:
                ups_flags |= ups_flags_speed(3);
                break;
        case NWAY_100M_FULL:
                ups_flags |= ups_flags_speed(4);
                break;
        case NWAY_1000M_FULL:
                ups_flags |= ups_flags_speed(5);
                break;
        case FORCE_10M_HALF:
                ups_flags |= ups_flags_speed(6);
                break;
        case FORCE_10M_FULL:
                ups_flags |= ups_flags_speed(7);
                break;
        case FORCE_100M_HALF:
                ups_flags |= ups_flags_speed(8);
                break;
        case FORCE_100M_FULL:
                ups_flags |= ups_flags_speed(9);
                break;
        default:
                break;
        }

        ocp_write_dword(tp, MCU_TYPE_USB, USB_UPS_FLAGS, ups_flags);
}

static void r8156_ups_flags(struct r8152 *tp)
{
        u32 ups_flags = 0;

        if (tp->ups_info.green)
                ups_flags |= UPS_FLAGS_EN_GREEN;

        if (tp->ups_info.aldps)
                ups_flags |= UPS_FLAGS_EN_ALDPS;

        if (tp->ups_info.eee)
                ups_flags |= UPS_FLAGS_EN_EEE;

        if (tp->ups_info.flow_control)
                ups_flags |= UPS_FLAGS_EN_FLOW_CTR;

        if (tp->ups_info.eee_ckdiv)
                ups_flags |= UPS_FLAGS_EN_EEE_CKDIV;

        if (tp->ups_info._10m_ckdiv)
                ups_flags |= UPS_FLAGS_EN_10M_CKDIV;

        if (tp->ups_info.eee_plloff_100)
                ups_flags |= UPS_FLAGS_EEE_PLLOFF_100;

        if (tp->ups_info.eee_plloff_giga)
                ups_flags |= UPS_FLAGS_EEE_PLLOFF_GIGA;

        if (tp->ups_info._250m_ckdiv)
                ups_flags |= UPS_FLAGS_250M_CKDIV;

        switch (tp->ups_info.speed_duplex) {
        case FORCE_10M_HALF:
                ups_flags |= ups_flags_speed(0);
                break;
        case FORCE_10M_FULL:
                ups_flags |= ups_flags_speed(1);
                break;
        case FORCE_100M_HALF:
                ups_flags |= ups_flags_speed(2);
                break;
        case FORCE_100M_FULL:
                ups_flags |= ups_flags_speed(3);
                break;
        case NWAY_10M_HALF:
                ups_flags |= ups_flags_speed(4);
                break;
        case NWAY_10M_FULL:
                ups_flags |= ups_flags_speed(5);
                break;
        case NWAY_100M_HALF:
                ups_flags |= ups_flags_speed(6);
                break;
        case NWAY_100M_FULL:
                ups_flags |= ups_flags_speed(7);
                break;
        case NWAY_1000M_FULL:
                ups_flags |= ups_flags_speed(8);
                break;
        case NWAY_2500M_FULL:
                ups_flags |= ups_flags_speed(9);
                break;
        default:
                break;
        }

        switch (tp->ups_info.lite_mode) {
        case 1:
                ups_flags |= 0 << 5;
                break;
        case 2:
                ups_flags |= 2 << 5;
                break;
        case 0:
        default:
                ups_flags |= 1 << 5;
                break;
        }

        ocp_write_dword(tp, MCU_TYPE_USB, USB_UPS_FLAGS, ups_flags);
}

static void rtl_green_en(struct r8152 *tp, bool enable)
{
        u16 data;

        data = sram_read(tp, SRAM_GREEN_CFG);
        if (enable)
                data |= GREEN_ETH_EN;
        else
                data &= ~GREEN_ETH_EN;
        sram_write(tp, SRAM_GREEN_CFG, data);

        tp->ups_info.green = enable;
}

static void r8153b_green_en(struct r8152 *tp, bool enable)
{
        if (enable) {
                sram_write(tp, 0x8045, 0);      /* 10M abiq&ldvbias */
                sram_write(tp, 0x804d, 0x1222); /* 100M short abiq&ldvbias */
                sram_write(tp, 0x805d, 0x0022); /* 1000M short abiq&ldvbias */
        } else {
                sram_write(tp, 0x8045, 0x2444); /* 10M abiq&ldvbias */
                sram_write(tp, 0x804d, 0x2444); /* 100M short abiq&ldvbias */
                sram_write(tp, 0x805d, 0x2444); /* 1000M short abiq&ldvbias */
        }

        rtl_green_en(tp, true);
}

static u16 r8153_phy_status(struct r8152 *tp, u16 desired)
{
        u16 data;
        int i;

        for (i = 0; i < 500; i++) {
                data = ocp_reg_read(tp, OCP_PHY_STATUS);
                data &= PHY_STAT_MASK;
                if (desired) {
                        if (data == desired)
                                break;
                } else if (data == PHY_STAT_LAN_ON || data == PHY_STAT_PWRDN ||
                           data == PHY_STAT_EXT_INIT) {
                        break;
                }

                msleep(20);
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        break;
        }

        return data;
}

static void r8153b_ups_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_POWER_CUT);

        if (enable) {
                r8153b_ups_flags(tp);

                ocp_data |= UPS_EN | USP_PREWAKE | PHASE2_EN;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_2);
                ocp_data |= UPS_FORCE_PWR_DOWN;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_MISC_2, ocp_data);
        } else {
                ocp_data &= ~(UPS_EN | USP_PREWAKE);
                ocp_write_byte(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_2);
                ocp_data &= ~UPS_FORCE_PWR_DOWN;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_MISC_2, ocp_data);

                if (ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0) & PCUT_STATUS) {
                        int i;

                        for (i = 0; i < 500; i++) {
                                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                                        return;
                                if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
                                    AUTOLOAD_DONE)
                                        break;
                                msleep(20);
                        }

                        tp->rtl_ops.hw_phy_cfg(tp);

                        rtl8152_set_speed(tp, tp->autoneg, tp->speed,
                                          tp->duplex, tp->advertising);
                }
        }
}

static void r8153c_ups_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_POWER_CUT);

        if (enable) {
                r8153b_ups_flags(tp);

                ocp_data |= UPS_EN | USP_PREWAKE | PHASE2_EN;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_2);
                ocp_data |= UPS_FORCE_PWR_DOWN;
                ocp_data &= ~BIT(7);
                ocp_write_byte(tp, MCU_TYPE_USB, USB_MISC_2, ocp_data);
        } else {
                ocp_data &= ~(UPS_EN | USP_PREWAKE);
                ocp_write_byte(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_2);
                ocp_data &= ~UPS_FORCE_PWR_DOWN;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_MISC_2, ocp_data);

                if (ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0) & PCUT_STATUS) {
                        int i;

                        for (i = 0; i < 500; i++) {
                                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                                        return;
                                if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
                                    AUTOLOAD_DONE)
                                        break;
                                msleep(20);
                        }

                        tp->rtl_ops.hw_phy_cfg(tp);

                        rtl8152_set_speed(tp, tp->autoneg, tp->speed,
                                          tp->duplex, tp->advertising);
                }

                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34);
                ocp_data |= BIT(8);
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG34, ocp_data);

                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);
        }
}

static void r8156_ups_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_POWER_CUT);

        if (enable) {
                r8156_ups_flags(tp);

                ocp_data |= UPS_EN | USP_PREWAKE | PHASE2_EN;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_2);
                ocp_data |= UPS_FORCE_PWR_DOWN;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_MISC_2, ocp_data);

                switch (tp->version) {
                case RTL_VER_13:
                case RTL_VER_15:
                        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_UPHY_XTAL);
                        ocp_data &= ~OOBS_POLLING;
                        ocp_write_byte(tp, MCU_TYPE_USB, USB_UPHY_XTAL, ocp_data);
                        break;
                default:
                        break;
                }
        } else {
                ocp_data &= ~(UPS_EN | USP_PREWAKE);
                ocp_write_byte(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_2);
                ocp_data &= ~UPS_FORCE_PWR_DOWN;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_MISC_2, ocp_data);

                if (ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0) & PCUT_STATUS) {
                        tp->rtl_ops.hw_phy_cfg(tp);

                        rtl8152_set_speed(tp, tp->autoneg, tp->speed,
                                          tp->duplex, tp->advertising);
                }
        }
}

static void r8153_power_cut_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_POWER_CUT);
        if (enable)
                ocp_data |= PWR_EN | PHASE2_EN;
        else
                ocp_data &= ~(PWR_EN | PHASE2_EN);
        ocp_write_word(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
        ocp_data &= ~PCUT_STATUS;
        ocp_write_word(tp, MCU_TYPE_USB, USB_MISC_0, ocp_data);
}

static void r8153b_power_cut_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_POWER_CUT);
        if (enable)
                ocp_data |= PWR_EN | PHASE2_EN;
        else
                ocp_data &= ~PWR_EN;
        ocp_write_word(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
        ocp_data &= ~PCUT_STATUS;
        ocp_write_word(tp, MCU_TYPE_USB, USB_MISC_0, ocp_data);
}

static void r8153_queue_wake(struct r8152 *tp, bool enable)
{
        u32 ocp_data;

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_INDICATE_FALG);
        if (enable)
                ocp_data |= UPCOMING_RUNTIME_D3;
        else
                ocp_data &= ~UPCOMING_RUNTIME_D3;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_INDICATE_FALG, ocp_data);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_SUSPEND_FLAG);
        ocp_data &= ~LINK_CHG_EVENT;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_SUSPEND_FLAG, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS);
        ocp_data &= ~LINK_CHANGE_FLAG;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS, ocp_data);
}

static bool rtl_can_wakeup(struct r8152 *tp)
{
        struct usb_device *udev = tp->udev;

        return (udev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_WAKEUP);
}

static void rtl_runtime_suspend_enable(struct r8152 *tp, bool enable)
{
        if (enable) {
                u32 ocp_data;

                __rtl_set_wol(tp, WAKE_ANY);

                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34);
                ocp_data |= LINK_OFF_WAKE_EN;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG34, ocp_data);

                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);
        } else {
                u32 ocp_data;

                __rtl_set_wol(tp, tp->saved_wolopts);

                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34);
                ocp_data &= ~LINK_OFF_WAKE_EN;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG34, ocp_data);

                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);
        }
}

static void rtl8153_runtime_enable(struct r8152 *tp, bool enable)
{
        if (enable) {
                r8153_u1u2en(tp, false);
                r8153_u2p3en(tp, false);
                rtl_runtime_suspend_enable(tp, true);
        } else {
                rtl_runtime_suspend_enable(tp, false);

                switch (tp->version) {
                case RTL_VER_03:
                case RTL_VER_04:
                        break;
                case RTL_VER_05:
                case RTL_VER_06:
                default:
                        r8153_u2p3en(tp, true);
                        break;
                }

                r8153_u1u2en(tp, true);
        }
}

static void rtl8153b_runtime_enable(struct r8152 *tp, bool enable)
{
        if (enable) {
                r8153_queue_wake(tp, true);
                r8153b_u1u2en(tp, false);
                r8153_u2p3en(tp, false);
                rtl_runtime_suspend_enable(tp, true);
                r8153b_ups_en(tp, true);
        } else {
                r8153b_ups_en(tp, false);
                r8153_queue_wake(tp, false);
                rtl_runtime_suspend_enable(tp, false);
                if (tp->udev->speed >= USB_SPEED_SUPER)
                        r8153b_u1u2en(tp, true);
        }
}

static void rtl8153c_runtime_enable(struct r8152 *tp, bool enable)
{
        if (enable) {
                r8153_queue_wake(tp, true);
                r8153b_u1u2en(tp, false);
                r8153_u2p3en(tp, false);
                rtl_runtime_suspend_enable(tp, true);
                r8153c_ups_en(tp, true);
        } else {
                r8153c_ups_en(tp, false);
                r8153_queue_wake(tp, false);
                rtl_runtime_suspend_enable(tp, false);
                r8153b_u1u2en(tp, true);
        }
}

static void rtl8156_runtime_enable(struct r8152 *tp, bool enable)
{
        if (enable) {
                r8153_queue_wake(tp, true);
                r8153b_u1u2en(tp, false);
                r8153_u2p3en(tp, false);
                rtl_runtime_suspend_enable(tp, true);
        } else {
                r8153_queue_wake(tp, false);
                rtl_runtime_suspend_enable(tp, false);
                r8153_u2p3en(tp, true);
                if (tp->udev->speed >= USB_SPEED_SUPER)
                        r8153b_u1u2en(tp, true);
        }
}

static void r8153_teredo_off(struct r8152 *tp)
{
        u32 ocp_data;

        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
        case RTL_VER_07:
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TEREDO_CFG);
                ocp_data &= ~(TEREDO_SEL | TEREDO_RS_EVENT_MASK |
                              OOB_TEREDO_EN);
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_TEREDO_CFG, ocp_data);
                break;

        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_TEST_01:
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_14:
        case RTL_VER_15:
        default:
                /* The bit 0 ~ 7 are relative with teredo settings. They are
                 * W1C (write 1 to clear), so set all 1 to disable it.
                 */
                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_TEREDO_CFG, 0xff);
                break;
        }

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_WDT6_CTRL, WDT6_SET_MODE);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_REALWOW_TIMER, 0);
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_TEREDO_TIMER, 0);
}

static void rtl_reset_bmu(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_BMU_RESET);
        ocp_data &= ~(BMU_RESET_EP_IN | BMU_RESET_EP_OUT);
        ocp_write_byte(tp, MCU_TYPE_USB, USB_BMU_RESET, ocp_data);
        ocp_data |= BMU_RESET_EP_IN | BMU_RESET_EP_OUT;
        ocp_write_byte(tp, MCU_TYPE_USB, USB_BMU_RESET, ocp_data);
}

/* Clear the bp to stop the firmware before loading a new one */
static void rtl_clear_bp(struct r8152 *tp, u16 type)
{
        u16 bp[16] = {0};
        u16 bp_num;

        switch (tp->version) {
        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
                if (type == MCU_TYPE_USB) {
                        ocp_write_word(tp, MCU_TYPE_USB, USB_BP2_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;
        }

        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);
        ocp_write_word(tp, type, PLA_BP_BA, 0);
}

static inline void rtl_reset_ocp_base(struct r8152 *tp)
{
        tp->ocp_base = -1;
}

static int rtl_phy_patch_request(struct r8152 *tp, bool request, bool wait)
{
        u16 data, check;
        int i;

        data = ocp_reg_read(tp, OCP_PHY_PATCH_CMD);
        if (request) {
                data |= PATCH_REQUEST;
                check = 0;
        } else {
                data &= ~PATCH_REQUEST;
                check = PATCH_READY;
        }
        ocp_reg_write(tp, OCP_PHY_PATCH_CMD, data);

        for (i = 0; wait && i < 5000; i++) {
                u32 ocp_data;

                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        return -ENODEV;

                usleep_range(1000, 2000);
                ocp_data = ocp_reg_read(tp, OCP_PHY_PATCH_STAT);
                if ((ocp_data & PATCH_READY) ^ check)
                        break;
        }

        if (request && wait &&
            !(ocp_reg_read(tp, OCP_PHY_PATCH_STAT) & PATCH_READY)) {
                dev_err(&tp->intf->dev, "PHY patch request fail\n");
                rtl_phy_patch_request(tp, false, false);
                return -ETIME;
        } else {
                return 0;
        }
}

static void rtl_patch_key_set(struct r8152 *tp, u16 key_addr, u16 patch_key)
{
        if (patch_key && key_addr) {
                sram_write(tp, key_addr, patch_key);
                sram_write(tp, SRAM_PHY_LOCK, PHY_PATCH_LOCK);
        } else if (key_addr) {
                u16 data;

                sram_write(tp, 0x0000, 0x0000);

                data = ocp_reg_read(tp, OCP_PHY_LOCK);
                data &= ~PATCH_LOCK;
                ocp_reg_write(tp, OCP_PHY_LOCK, data);

                sram_write(tp, key_addr, 0x0000);
        } else {
                WARN_ON_ONCE(1);
        }
}

static int
rtl_pre_ram_code(struct r8152 *tp, u16 key_addr, u16 patch_key, bool wait)
{
        if (rtl_phy_patch_request(tp, true, wait))
                return -ETIME;

        rtl_patch_key_set(tp, key_addr, patch_key);

        return 0;
}

static int rtl_post_ram_code(struct r8152 *tp, u16 key_addr, bool wait)
{
        rtl_patch_key_set(tp, key_addr, 0);

        rtl_phy_patch_request(tp, false, wait);

        return 0;
}

static bool rtl8152_is_fw_phy_speed_up_ok(struct r8152 *tp, struct fw_phy_speed_up *phy)
{
        u16 fw_offset;
        u32 length;
        bool rc = false;

        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
        case RTL_VER_07:
        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_14:
                goto out;
        case RTL_VER_13:
        case RTL_VER_15:
        default:
                break;
        }

        fw_offset = __le16_to_cpu(phy->fw_offset);
        length = __le32_to_cpu(phy->blk_hdr.length);
        if (fw_offset < sizeof(*phy) || length <= fw_offset) {
                dev_err(&tp->intf->dev, "invalid fw_offset\n");
                goto out;
        }

        length -= fw_offset;
        if (length & 3) {
                dev_err(&tp->intf->dev, "invalid block length\n");
                goto out;
        }

        if (__le16_to_cpu(phy->fw_reg) != 0x9A00) {
                dev_err(&tp->intf->dev, "invalid register to load firmware\n");
                goto out;
        }

        rc = true;
out:
        return rc;
}

static bool rtl8152_is_fw_phy_ver_ok(struct r8152 *tp, struct fw_phy_ver *ver)
{
        bool rc = false;

        switch (tp->version) {
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
                break;
        default:
                goto out;
        }

        if (__le32_to_cpu(ver->blk_hdr.length) != sizeof(*ver)) {
                dev_err(&tp->intf->dev, "invalid block length\n");
                goto out;
        }

        if (__le16_to_cpu(ver->ver.addr) != SRAM_GPHY_FW_VER) {
                dev_err(&tp->intf->dev, "invalid phy ver addr\n");
                goto out;
        }

        rc = true;
out:
        return rc;
}

static bool rtl8152_is_fw_phy_fixup_ok(struct r8152 *tp, struct fw_phy_fixup *fix)
{
        bool rc = false;

        switch (tp->version) {
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
                break;
        default:
                goto out;
        }

        if (__le32_to_cpu(fix->blk_hdr.length) != sizeof(*fix)) {
                dev_err(&tp->intf->dev, "invalid block length\n");
                goto out;
        }

        if (__le16_to_cpu(fix->setting.addr) != OCP_PHY_PATCH_CMD ||
            __le16_to_cpu(fix->setting.data) != BIT(7)) {
                dev_err(&tp->intf->dev, "invalid phy fixup\n");
                goto out;
        }

        rc = true;
out:
        return rc;
}

static bool rtl8152_is_fw_phy_union_ok(struct r8152 *tp, struct fw_phy_union *phy)
{
        u16 fw_offset;
        u32 length;
        bool rc = false;

        switch (tp->version) {
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
                break;
        default:
                goto out;
        }

        fw_offset = __le16_to_cpu(phy->fw_offset);
        length = __le32_to_cpu(phy->blk_hdr.length);
        if (fw_offset < sizeof(*phy) || length <= fw_offset) {
                dev_err(&tp->intf->dev, "invalid fw_offset\n");
                goto out;
        }

        length -= fw_offset;
        if (length & 1) {
                dev_err(&tp->intf->dev, "invalid block length\n");
                goto out;
        }

        if (phy->pre_num > 2) {
                dev_err(&tp->intf->dev, "invalid pre_num %d\n", phy->pre_num);
                goto out;
        }

        if (phy->bp_num > 8) {
                dev_err(&tp->intf->dev, "invalid bp_num %d\n", phy->bp_num);
                goto out;
        }

        rc = true;
out:
        return rc;
}

static bool rtl8152_is_fw_phy_nc_ok(struct r8152 *tp, struct fw_phy_nc *phy)
{
        u32 length;
        u16 fw_offset, fw_reg, ba_reg, patch_en_addr, mode_reg, bp_start;
        bool rc = false;

        switch (tp->version) {
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
                fw_reg = 0xa014;
                ba_reg = 0xa012;
                patch_en_addr = 0xa01a;
                mode_reg = 0xb820;
                bp_start = 0xa000;
                break;
        default:
                goto out;
        }

        fw_offset = __le16_to_cpu(phy->fw_offset);
        if (fw_offset < sizeof(*phy)) {
                dev_err(&tp->intf->dev, "fw_offset too small\n");
                goto out;
        }

        length = __le32_to_cpu(phy->blk_hdr.length);
        if (length < fw_offset) {
                dev_err(&tp->intf->dev, "invalid fw_offset\n");
                goto out;
        }

        length -= __le16_to_cpu(phy->fw_offset);
        if (!length || (length & 1)) {
                dev_err(&tp->intf->dev, "invalid block length\n");
                goto out;
        }

        if (__le16_to_cpu(phy->fw_reg) != fw_reg) {
                dev_err(&tp->intf->dev, "invalid register to load firmware\n");
                goto out;
        }

        if (__le16_to_cpu(phy->ba_reg) != ba_reg) {
                dev_err(&tp->intf->dev, "invalid base address register\n");
                goto out;
        }

        if (__le16_to_cpu(phy->patch_en_addr) != patch_en_addr) {
                dev_err(&tp->intf->dev,
                        "invalid patch mode enabled register\n");
                goto out;
        }

        if (__le16_to_cpu(phy->mode_reg) != mode_reg) {
                dev_err(&tp->intf->dev,
                        "invalid register to switch the mode\n");
                goto out;
        }

        if (__le16_to_cpu(phy->bp_start) != bp_start) {
                dev_err(&tp->intf->dev,
                        "invalid start register of break point\n");
                goto out;
        }

        if (__le16_to_cpu(phy->bp_num) > 4) {
                dev_err(&tp->intf->dev, "invalid break point number\n");
                goto out;
        }

        rc = true;
out:
        return rc;
}

static bool rtl8152_is_fw_mac_ok(struct r8152 *tp, struct fw_mac *mac)
{
        u16 fw_reg, bp_ba_addr, bp_en_addr, bp_start, fw_offset;
        bool rc = false;
        u32 length, type;
        int i, max_bp;

        type = __le32_to_cpu(mac->blk_hdr.type);
        if (type == RTL_FW_PLA) {
                switch (tp->version) {
                case RTL_VER_01:
                case RTL_VER_02:
                case RTL_VER_07:
                        fw_reg = 0xf800;
                        bp_ba_addr = PLA_BP_BA;
                        bp_en_addr = 0;
                        bp_start = PLA_BP_0;
                        max_bp = 8;
                        break;
                case RTL_VER_03:
                case RTL_VER_04:
                case RTL_VER_05:
                case RTL_VER_06:
                case RTL_VER_08:
                case RTL_VER_09:
                case RTL_VER_11:
                case RTL_VER_12:
                case RTL_VER_13:
                case RTL_VER_15:
                        fw_reg = 0xf800;
                        bp_ba_addr = PLA_BP_BA;
                        bp_en_addr = PLA_BP_EN;
                        bp_start = PLA_BP_0;
                        max_bp = 8;
                        break;
                case RTL_VER_14:
                        fw_reg = 0xf800;
                        bp_ba_addr = PLA_BP_BA;
                        bp_en_addr = USB_BP2_EN;
                        bp_start = PLA_BP_0;
                        max_bp = 16;
                        break;
                default:
                        goto out;
                }
        } else if (type == RTL_FW_USB) {
                switch (tp->version) {
                case RTL_VER_03:
                case RTL_VER_04:
                case RTL_VER_05:
                case RTL_VER_06:
                        fw_reg = 0xf800;
                        bp_ba_addr = USB_BP_BA;
                        bp_en_addr = USB_BP_EN;
                        bp_start = USB_BP_0;
                        max_bp = 8;
                        break;
                case RTL_VER_08:
                case RTL_VER_09:
                case RTL_VER_11:
                case RTL_VER_12:
                case RTL_VER_13:
                case RTL_VER_14:
                case RTL_VER_15:
                        fw_reg = 0xe600;
                        bp_ba_addr = USB_BP_BA;
                        bp_en_addr = USB_BP2_EN;
                        bp_start = USB_BP_0;
                        max_bp = 16;
                        break;
                case RTL_VER_01:
                case RTL_VER_02:
                case RTL_VER_07:
                default:
                        goto out;
                }
        } else {
                goto out;
        }

        fw_offset = __le16_to_cpu(mac->fw_offset);
        if (fw_offset < sizeof(*mac)) {
                dev_err(&tp->intf->dev, "fw_offset too small\n");
                goto out;
        }

        length = __le32_to_cpu(mac->blk_hdr.length);
        if (length < fw_offset) {
                dev_err(&tp->intf->dev, "invalid fw_offset\n");
                goto out;
        }

        length -= fw_offset;
        if (length < 4 || (length & 3)) {
                dev_err(&tp->intf->dev, "invalid block length\n");
                goto out;
        }

        if (__le16_to_cpu(mac->fw_reg) != fw_reg) {
                dev_err(&tp->intf->dev, "invalid register to load firmware\n");
                goto out;
        }

        if (__le16_to_cpu(mac->bp_ba_addr) != bp_ba_addr) {
                dev_err(&tp->intf->dev, "invalid base address register\n");
                goto out;
        }

        if (__le16_to_cpu(mac->bp_en_addr) != bp_en_addr) {
                dev_err(&tp->intf->dev, "invalid enabled mask register\n");
                goto out;
        }

        if (__le16_to_cpu(mac->bp_start) != bp_start) {
                dev_err(&tp->intf->dev,
                        "invalid start register of break point\n");
                goto out;
        }

        if (__le16_to_cpu(mac->bp_num) > max_bp) {
                dev_err(&tp->intf->dev, "invalid break point number\n");
                goto out;
        }

        for (i = __le16_to_cpu(mac->bp_num); i < max_bp; i++) {
                if (mac->bp[i]) {
                        dev_err(&tp->intf->dev, "unused bp%u is not zero\n", i);
                        goto out;
                }
        }

        rc = true;
out:
        return rc;
}

/* Verify the checksum for the firmware file. It is calculated from the version
 * field to the end of the file. Compare the result with the checksum field to
 * make sure the file is correct.
 */
static long rtl8152_fw_verify_checksum(struct r8152 *tp,
                                       struct fw_header *fw_hdr, size_t size)
{
        unsigned char checksum[sizeof(fw_hdr->checksum)];
        struct crypto_shash *alg;
        struct shash_desc *sdesc;
        size_t len;
        long rc;

        alg = crypto_alloc_shash("sha256", 0, 0);
        if (IS_ERR(alg)) {
                rc = PTR_ERR(alg);
                goto out;
        }

        if (crypto_shash_digestsize(alg) != sizeof(fw_hdr->checksum)) {
                rc = -EFAULT;
                dev_err(&tp->intf->dev, "digestsize incorrect (%u)\n",
                        crypto_shash_digestsize(alg));
                goto free_shash;
        }

        len = sizeof(*sdesc) + crypto_shash_descsize(alg);
        sdesc = kmalloc(len, GFP_KERNEL);
        if (!sdesc) {
                rc = -ENOMEM;
                goto free_shash;
        }
        sdesc->tfm = alg;

        len = size - sizeof(fw_hdr->checksum);
        rc = crypto_shash_digest(sdesc, fw_hdr->version, len, checksum);
        kfree(sdesc);
        if (rc)
                goto free_shash;

        if (memcmp(fw_hdr->checksum, checksum, sizeof(fw_hdr->checksum))) {
                dev_err(&tp->intf->dev, "checksum fail\n");
                rc = -EFAULT;
        }

free_shash:
        crypto_free_shash(alg);
out:
        return rc;
}

static long rtl8152_check_firmware(struct r8152 *tp, struct rtl_fw *rtl_fw)
{
        const struct firmware *fw = rtl_fw->fw;
        struct fw_header *fw_hdr = (struct fw_header *)fw->data;
        unsigned long fw_flags = 0;
        long ret = -EFAULT;
        int i;

        if (fw->size < sizeof(*fw_hdr)) {
                dev_err(&tp->intf->dev, "file too small\n");
                goto fail;
        }

        ret = rtl8152_fw_verify_checksum(tp, fw_hdr, fw->size);
        if (ret)
                goto fail;

        ret = -EFAULT;

        for (i = sizeof(*fw_hdr); i < fw->size;) {
                struct fw_block *block = (struct fw_block *)&fw->data[i];
                u32 type;

                if ((i + sizeof(*block)) > fw->size)
                        goto fail;

                type = __le32_to_cpu(block->type);
                switch (type) {
                case RTL_FW_END:
                        if (__le32_to_cpu(block->length) != sizeof(*block))
                                goto fail;
                        goto fw_end;
                case RTL_FW_PLA:
                        if (test_bit(FW_FLAGS_PLA, &fw_flags)) {
                                dev_err(&tp->intf->dev,
                                        "multiple PLA firmware encountered");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_mac_ok(tp, (struct fw_mac *)block)) {
                                dev_err(&tp->intf->dev,
                                        "check PLA firmware failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_PLA, &fw_flags);
                        break;
                case RTL_FW_USB:
                        if (test_bit(FW_FLAGS_USB, &fw_flags)) {
                                dev_err(&tp->intf->dev,
                                        "multiple USB firmware encountered");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_mac_ok(tp, (struct fw_mac *)block)) {
                                dev_err(&tp->intf->dev,
                                        "check USB firmware failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_USB, &fw_flags);
                        break;
                case RTL_FW_PHY_START:
                        if (test_bit(FW_FLAGS_START, &fw_flags) ||
                            test_bit(FW_FLAGS_NC, &fw_flags) ||
                            test_bit(FW_FLAGS_NC1, &fw_flags) ||
                            test_bit(FW_FLAGS_NC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC, &fw_flags) ||
                            test_bit(FW_FLAGS_STOP, &fw_flags)) {
                                dev_err(&tp->intf->dev,
                                        "check PHY_START fail\n");
                                goto fail;
                        }

                        if (__le32_to_cpu(block->length) != sizeof(struct fw_phy_patch_key)) {
                                dev_err(&tp->intf->dev,
                                        "Invalid length for PHY_START\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_START, &fw_flags);
                        break;
                case RTL_FW_PHY_STOP:
                        if (test_bit(FW_FLAGS_STOP, &fw_flags) ||
                            !test_bit(FW_FLAGS_START, &fw_flags)) {
                                dev_err(&tp->intf->dev,
                                        "Check PHY_STOP fail\n");
                                goto fail;
                        }

                        if (__le32_to_cpu(block->length) != sizeof(*block)) {
                                dev_err(&tp->intf->dev,
                                        "Invalid length for PHY_STOP\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_STOP, &fw_flags);
                        break;
                case RTL_FW_PHY_NC:
                        if (!test_bit(FW_FLAGS_START, &fw_flags) ||
                            test_bit(FW_FLAGS_STOP, &fw_flags)) {
                                dev_err(&tp->intf->dev,
                                        "check PHY_NC fail\n");
                                goto fail;
                        }

                        if (test_bit(FW_FLAGS_NC, &fw_flags)) {
                                dev_err(&tp->intf->dev,
                                        "multiple PHY NC encountered\n");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_phy_nc_ok(tp, (struct fw_phy_nc *)block)) {
                                dev_err(&tp->intf->dev,
                                        "check PHY NC firmware failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_NC, &fw_flags);
                        break;
                case RTL_FW_PHY_UNION_NC:
                        if (!test_bit(FW_FLAGS_START, &fw_flags) ||
                            test_bit(FW_FLAGS_NC1, &fw_flags) ||
                            test_bit(FW_FLAGS_NC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC, &fw_flags) ||
                            test_bit(FW_FLAGS_STOP, &fw_flags)) {
                                dev_err(&tp->intf->dev, "PHY_UNION_NC out of order\n");
                                goto fail;
                        }

                        if (test_bit(FW_FLAGS_NC, &fw_flags)) {
                                dev_err(&tp->intf->dev, "multiple PHY_UNION_NC encountered\n");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_phy_union_ok(tp, (struct fw_phy_union *)block)) {
                                dev_err(&tp->intf->dev, "check PHY_UNION_NC failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_NC, &fw_flags);
                        break;
                case RTL_FW_PHY_UNION_NC1:
                        if (!test_bit(FW_FLAGS_START, &fw_flags) ||
                            test_bit(FW_FLAGS_NC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC, &fw_flags) ||
                            test_bit(FW_FLAGS_STOP, &fw_flags)) {
                                dev_err(&tp->intf->dev, "PHY_UNION_NC1 out of order\n");
                                goto fail;
                        }

                        if (test_bit(FW_FLAGS_NC1, &fw_flags)) {
                                dev_err(&tp->intf->dev, "multiple PHY NC1 encountered\n");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_phy_union_ok(tp, (struct fw_phy_union *)block)) {
                                dev_err(&tp->intf->dev, "check PHY_UNION_NC1 failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_NC1, &fw_flags);
                        break;
                case RTL_FW_PHY_UNION_NC2:
                        if (!test_bit(FW_FLAGS_START, &fw_flags) ||
                            test_bit(FW_FLAGS_UC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC, &fw_flags) ||
                            test_bit(FW_FLAGS_STOP, &fw_flags)) {
                                dev_err(&tp->intf->dev, "PHY_UNION_NC2 out of order\n");
                                goto fail;
                        }

                        if (test_bit(FW_FLAGS_NC2, &fw_flags)) {
                                dev_err(&tp->intf->dev, "multiple PHY NC2 encountered\n");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_phy_union_ok(tp, (struct fw_phy_union *)block)) {
                                dev_err(&tp->intf->dev, "check PHY_UNION_NC2 failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_NC2, &fw_flags);
                        break;
                case RTL_FW_PHY_UNION_UC2:
                        if (!test_bit(FW_FLAGS_START, &fw_flags) ||
                            test_bit(FW_FLAGS_UC, &fw_flags) ||
                            test_bit(FW_FLAGS_STOP, &fw_flags)) {
                                dev_err(&tp->intf->dev, "PHY_UNION_UC2 out of order\n");
                                goto fail;
                        }

                        if (test_bit(FW_FLAGS_UC2, &fw_flags)) {
                                dev_err(&tp->intf->dev, "multiple PHY UC2 encountered\n");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_phy_union_ok(tp, (struct fw_phy_union *)block)) {
                                dev_err(&tp->intf->dev, "check PHY_UNION_UC2 failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_UC2, &fw_flags);
                        break;
                case RTL_FW_PHY_UNION_UC:
                        if (!test_bit(FW_FLAGS_START, &fw_flags) ||
                            test_bit(FW_FLAGS_STOP, &fw_flags)) {
                                dev_err(&tp->intf->dev, "PHY_UNION_UC out of order\n");
                                goto fail;
                        }

                        if (test_bit(FW_FLAGS_UC, &fw_flags)) {
                                dev_err(&tp->intf->dev, "multiple PHY UC encountered\n");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_phy_union_ok(tp, (struct fw_phy_union *)block)) {
                                dev_err(&tp->intf->dev, "check PHY_UNION_UC failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_UC, &fw_flags);
                        break;
                case RTL_FW_PHY_UNION_MISC:
                        if (!rtl8152_is_fw_phy_union_ok(tp, (struct fw_phy_union *)block)) {
                                dev_err(&tp->intf->dev, "check RTL_FW_PHY_UNION_MISC failed\n");
                                goto fail;
                        }
                        break;
                case RTL_FW_PHY_FIXUP:
                        if (!rtl8152_is_fw_phy_fixup_ok(tp, (struct fw_phy_fixup *)block)) {
                                dev_err(&tp->intf->dev, "check PHY fixup failed\n");
                                goto fail;
                        }
                        break;
                case RTL_FW_PHY_SPEED_UP:
                        if (test_bit(FW_FLAGS_SPEED_UP, &fw_flags)) {
                                dev_err(&tp->intf->dev, "multiple PHY firmware encountered");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_phy_speed_up_ok(tp, (struct fw_phy_speed_up *)block)) {
                                dev_err(&tp->intf->dev, "check PHY speed up failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_SPEED_UP, &fw_flags);
                        break;
                case RTL_FW_PHY_VER:
                        if (test_bit(FW_FLAGS_START, &fw_flags) ||
                            test_bit(FW_FLAGS_NC, &fw_flags) ||
                            test_bit(FW_FLAGS_NC1, &fw_flags) ||
                            test_bit(FW_FLAGS_NC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC2, &fw_flags) ||
                            test_bit(FW_FLAGS_UC, &fw_flags) ||
                            test_bit(FW_FLAGS_STOP, &fw_flags)) {
                                dev_err(&tp->intf->dev, "Invalid order to set PHY version\n");
                                goto fail;
                        }

                        if (test_bit(FW_FLAGS_VER, &fw_flags)) {
                                dev_err(&tp->intf->dev, "multiple PHY version encountered");
                                goto fail;
                        }

                        if (!rtl8152_is_fw_phy_ver_ok(tp, (struct fw_phy_ver *)block)) {
                                dev_err(&tp->intf->dev, "check PHY version failed\n");
                                goto fail;
                        }
                        __set_bit(FW_FLAGS_VER, &fw_flags);
                        break;
                default:
                        dev_warn(&tp->intf->dev, "Unknown type %u is found\n",
                                 type);
                        break;
                }

                /* next block */
                i += ALIGN(__le32_to_cpu(block->length), 8);
        }

fw_end:
        if (test_bit(FW_FLAGS_START, &fw_flags) && !test_bit(FW_FLAGS_STOP, &fw_flags)) {
                dev_err(&tp->intf->dev, "without PHY_STOP\n");
                goto fail;
        }

        return 0;
fail:
        return ret;
}

static void rtl_ram_code_speed_up(struct r8152 *tp, struct fw_phy_speed_up *phy, bool wait)
{
        u32 len;
        u8 *data;

        rtl_reset_ocp_base(tp);

        if (sram_read(tp, SRAM_GPHY_FW_VER) >= __le16_to_cpu(phy->version)) {
                dev_dbg(&tp->intf->dev, "PHY firmware has been the newest\n");
                return;
        }

        len = __le32_to_cpu(phy->blk_hdr.length);
        len -= __le16_to_cpu(phy->fw_offset);
        data = (u8 *)phy + __le16_to_cpu(phy->fw_offset);

        if (rtl_phy_patch_request(tp, true, wait))
                return;

        while (len) {
                u32 ocp_data, size;
                int i;

                if (len < 2048)
                        size = len;
                else
                        size = 2048;

                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_GPHY_CTRL);
                ocp_data |= GPHY_PATCH_DONE | BACKUP_RESTRORE;
                ocp_write_word(tp, MCU_TYPE_USB, USB_GPHY_CTRL, ocp_data);

                generic_ocp_write(tp, __le16_to_cpu(phy->fw_reg), 0xff, size, data, MCU_TYPE_USB);

                data += size;
                len -= size;

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_POL_GPIO_CTRL);
                ocp_data |= POL_GPHY_PATCH;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_POL_GPIO_CTRL, ocp_data);

                for (i = 0; i < 1000; i++) {
                        if (!(ocp_read_word(tp, MCU_TYPE_PLA, PLA_POL_GPIO_CTRL) & POL_GPHY_PATCH))
                                break;
                }

                if (i == 1000) {
                        dev_err(&tp->intf->dev, "ram code speedup mode timeout\n");
                        break;
                }
        }

        rtl_reset_ocp_base(tp);

        rtl_phy_patch_request(tp, false, wait);

        if (sram_read(tp, SRAM_GPHY_FW_VER) == __le16_to_cpu(phy->version))
                dev_dbg(&tp->intf->dev, "successfully applied %s\n", phy->info);
        else
                dev_err(&tp->intf->dev, "ram code speedup mode fail\n");
}

static int rtl8152_fw_phy_ver(struct r8152 *tp, struct fw_phy_ver *phy_ver)
{
        u16 ver_addr, ver;

        ver_addr = __le16_to_cpu(phy_ver->ver.addr);
        ver = __le16_to_cpu(phy_ver->ver.data);

        rtl_reset_ocp_base(tp);

        if (sram_read(tp, ver_addr) >= ver) {
                dev_dbg(&tp->intf->dev, "PHY firmware has been the newest\n");
                return 0;
        }

        sram_write(tp, ver_addr, ver);

        dev_dbg(&tp->intf->dev, "PHY firmware version %x\n", ver);

        return ver;
}

static void rtl8152_fw_phy_fixup(struct r8152 *tp, struct fw_phy_fixup *fix)
{
        u16 addr, data;

        rtl_reset_ocp_base(tp);

        addr = __le16_to_cpu(fix->setting.addr);
        data = ocp_reg_read(tp, addr);

        switch (__le16_to_cpu(fix->bit_cmd)) {
        case FW_FIXUP_AND:
                data &= __le16_to_cpu(fix->setting.data);
                break;
        case FW_FIXUP_OR:
                data |= __le16_to_cpu(fix->setting.data);
                break;
        case FW_FIXUP_NOT:
                data &= ~__le16_to_cpu(fix->setting.data);
                break;
        case FW_FIXUP_XOR:
                data ^= __le16_to_cpu(fix->setting.data);
                break;
        default:
                return;
        }

        ocp_reg_write(tp, addr, data);

        dev_dbg(&tp->intf->dev, "applied ocp %x %x\n", addr, data);
}

static void rtl8152_fw_phy_union_apply(struct r8152 *tp, struct fw_phy_union *phy)
{
        __le16 *data;
        u32 length;
        int i, num;

        rtl_reset_ocp_base(tp);

        num = phy->pre_num;
        for (i = 0; i < num; i++)
                sram_write(tp, __le16_to_cpu(phy->pre_set[i].addr),
                           __le16_to_cpu(phy->pre_set[i].data));

        length = __le32_to_cpu(phy->blk_hdr.length);
        length -= __le16_to_cpu(phy->fw_offset);
        num = length / 2;
        data = (__le16 *)((u8 *)phy + __le16_to_cpu(phy->fw_offset));

        ocp_reg_write(tp, OCP_SRAM_ADDR, __le16_to_cpu(phy->fw_reg));
        for (i = 0; i < num; i++)
                ocp_reg_write(tp, OCP_SRAM_DATA, __le16_to_cpu(data[i]));

        num = phy->bp_num;
        for (i = 0; i < num; i++)
                sram_write(tp, __le16_to_cpu(phy->bp[i].addr), __le16_to_cpu(phy->bp[i].data));

        if (phy->bp_num && phy->bp_en.addr)
                sram_write(tp, __le16_to_cpu(phy->bp_en.addr), __le16_to_cpu(phy->bp_en.data));

        dev_dbg(&tp->intf->dev, "successfully applied %s\n", phy->info);
}

static void rtl8152_fw_phy_nc_apply(struct r8152 *tp, struct fw_phy_nc *phy)
{
        u16 mode_reg, bp_index;
        u32 length, i, num;
        __le16 *data;

        rtl_reset_ocp_base(tp);

        mode_reg = __le16_to_cpu(phy->mode_reg);
        sram_write(tp, mode_reg, __le16_to_cpu(phy->mode_pre));
        sram_write(tp, __le16_to_cpu(phy->ba_reg),
                   __le16_to_cpu(phy->ba_data));

        length = __le32_to_cpu(phy->blk_hdr.length);
        length -= __le16_to_cpu(phy->fw_offset);
        num = length / 2;
        data = (__le16 *)((u8 *)phy + __le16_to_cpu(phy->fw_offset));

        ocp_reg_write(tp, OCP_SRAM_ADDR, __le16_to_cpu(phy->fw_reg));
        for (i = 0; i < num; i++)
                ocp_reg_write(tp, OCP_SRAM_DATA, __le16_to_cpu(data[i]));

        sram_write(tp, __le16_to_cpu(phy->patch_en_addr),
                   __le16_to_cpu(phy->patch_en_value));

        bp_index = __le16_to_cpu(phy->bp_start);
        num = __le16_to_cpu(phy->bp_num);
        for (i = 0; i < num; i++) {
                sram_write(tp, bp_index, __le16_to_cpu(phy->bp[i]));
                bp_index += 2;
        }

        sram_write(tp, mode_reg, __le16_to_cpu(phy->mode_post));

        dev_dbg(&tp->intf->dev, "successfully applied %s\n", phy->info);
}

static void rtl8152_fw_mac_apply(struct r8152 *tp, struct fw_mac *mac)
{
        u16 bp_en_addr, type, fw_ver_reg;
        u32 length;
        u8 *data;

        switch (__le32_to_cpu(mac->blk_hdr.type)) {
        case RTL_FW_PLA:
                type = MCU_TYPE_PLA;
                break;
        case RTL_FW_USB:
                type = MCU_TYPE_USB;
                break;
        default:
                return;
        }

        fw_ver_reg = __le16_to_cpu(mac->fw_ver_reg);
        if (fw_ver_reg && ocp_read_byte(tp, MCU_TYPE_USB, fw_ver_reg) >= mac->fw_ver_data) {
                dev_dbg(&tp->intf->dev, "%s firmware has been the newest\n", type ? "PLA" : "USB");
                return;
        }

        rtl_clear_bp(tp, type);

        /* Enable backup/restore of MACDBG. This is required after clearing PLA
         * break points and before applying the PLA firmware.
         */
        if (tp->version == RTL_VER_04 && type == MCU_TYPE_PLA &&
            !(ocp_read_word(tp, MCU_TYPE_PLA, PLA_MACDBG_POST) & DEBUG_OE)) {
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_MACDBG_PRE, DEBUG_LTSSM);
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_MACDBG_POST, DEBUG_LTSSM);
        }

        length = __le32_to_cpu(mac->blk_hdr.length);
        length -= __le16_to_cpu(mac->fw_offset);

        data = (u8 *)mac;
        data += __le16_to_cpu(mac->fw_offset);

        if (generic_ocp_write(tp, __le16_to_cpu(mac->fw_reg), 0xff, length,
                              data, type) < 0) {
                dev_err(&tp->intf->dev, "Write %s fw fail\n",
                        type ? "PLA" : "USB");
                return;
        }

        ocp_write_word(tp, type, __le16_to_cpu(mac->bp_ba_addr),
                       __le16_to_cpu(mac->bp_ba_value));

        if (generic_ocp_write(tp, __le16_to_cpu(mac->bp_start), BYTE_EN_DWORD,
                              ALIGN(__le16_to_cpu(mac->bp_num) << 1, 4),
                              mac->bp, type) < 0) {
                dev_err(&tp->intf->dev, "Write %s bp fail\n",
                        type ? "PLA" : "USB");
                return;
        }

        bp_en_addr = __le16_to_cpu(mac->bp_en_addr);
        if (bp_en_addr)
                ocp_write_word(tp, type, bp_en_addr,
                               __le16_to_cpu(mac->bp_en_value));

        if (fw_ver_reg)
                ocp_write_byte(tp, MCU_TYPE_USB, fw_ver_reg,
                               mac->fw_ver_data);

        dev_dbg(&tp->intf->dev, "successfully applied %s\n", mac->info);
}

static void rtl8152_apply_firmware(struct r8152 *tp, bool power_cut)
{
        struct rtl_fw *rtl_fw = &tp->rtl_fw;
        const struct firmware *fw;
        struct fw_header *fw_hdr;
        struct fw_phy_patch_key *key;
        u16 key_addr = 0;
        int i, patch_phy = 1;

        if (IS_ERR_OR_NULL(rtl_fw->fw))
                return;

        fw = rtl_fw->fw;
        fw_hdr = (struct fw_header *)fw->data;

        if (rtl_fw->pre_fw)
                rtl_fw->pre_fw(tp);

        for (i = offsetof(struct fw_header, blocks); i < fw->size;) {
                struct fw_block *block = (struct fw_block *)&fw->data[i];

                switch (__le32_to_cpu(block->type)) {
                case RTL_FW_END:
                        goto post_fw;
                case RTL_FW_PLA:
                case RTL_FW_USB:
                        rtl8152_fw_mac_apply(tp, (struct fw_mac *)block);
                        break;
                case RTL_FW_PHY_START:
                        if (!patch_phy)
                                break;
                        key = (struct fw_phy_patch_key *)block;
                        key_addr = __le16_to_cpu(key->key_reg);
                        rtl_pre_ram_code(tp, key_addr, __le16_to_cpu(key->key_data), !power_cut);
                        break;
                case RTL_FW_PHY_STOP:
                        if (!patch_phy)
                                break;
                        WARN_ON(!key_addr);
                        rtl_post_ram_code(tp, key_addr, !power_cut);
                        break;
                case RTL_FW_PHY_NC:
                        rtl8152_fw_phy_nc_apply(tp, (struct fw_phy_nc *)block);
                        break;
                case RTL_FW_PHY_VER:
                        patch_phy = rtl8152_fw_phy_ver(tp, (struct fw_phy_ver *)block);
                        break;
                case RTL_FW_PHY_UNION_NC:
                case RTL_FW_PHY_UNION_NC1:
                case RTL_FW_PHY_UNION_NC2:
                case RTL_FW_PHY_UNION_UC2:
                case RTL_FW_PHY_UNION_UC:
                case RTL_FW_PHY_UNION_MISC:
                        if (patch_phy)
                                rtl8152_fw_phy_union_apply(tp, (struct fw_phy_union *)block);
                        break;
                case RTL_FW_PHY_FIXUP:
                        if (patch_phy)
                                rtl8152_fw_phy_fixup(tp, (struct fw_phy_fixup *)block);
                        break;
                case RTL_FW_PHY_SPEED_UP:
                        rtl_ram_code_speed_up(tp, (struct fw_phy_speed_up *)block, !power_cut);
                        break;
                default:
                        break;
                }

                i += ALIGN(__le32_to_cpu(block->length), 8);
        }

post_fw:
        if (rtl_fw->post_fw)
                rtl_fw->post_fw(tp);

        rtl_reset_ocp_base(tp);
        strscpy(rtl_fw->version, fw_hdr->version, RTL_VER_SIZE);
        dev_dbg(&tp->intf->dev, "load %s successfully\n", rtl_fw->version);
}

static void rtl8152_release_firmware(struct r8152 *tp)
{
        struct rtl_fw *rtl_fw = &tp->rtl_fw;

        if (!IS_ERR_OR_NULL(rtl_fw->fw)) {
                release_firmware(rtl_fw->fw);
                rtl_fw->fw = NULL;
        }
}

static int rtl8152_request_firmware(struct r8152 *tp)
{
        struct rtl_fw *rtl_fw = &tp->rtl_fw;
        long rc;

        if (rtl_fw->fw || !rtl_fw->fw_name) {
                dev_info(&tp->intf->dev, "skip request firmware\n");
                rc = 0;
                goto result;
        }

        rc = request_firmware(&rtl_fw->fw, rtl_fw->fw_name, &tp->intf->dev);
        if (rc < 0)
                goto result;

        rc = rtl8152_check_firmware(tp, rtl_fw);
        if (rc < 0)
                release_firmware(rtl_fw->fw);

result:
        if (rc) {
                rtl_fw->fw = ERR_PTR(rc);

                dev_warn(&tp->intf->dev,
                         "unable to load firmware patch %s (%ld)\n",
                         rtl_fw->fw_name, rc);
        }

        return rc;
}

static void r8152_aldps_en(struct r8152 *tp, bool enable)
{
        if (enable) {
                ocp_reg_write(tp, OCP_ALDPS_CONFIG, ENPWRSAVE | ENPDNPS |
                                                    LINKENA | DIS_SDSAVE);
        } else {
                ocp_reg_write(tp, OCP_ALDPS_CONFIG, ENPDNPS | LINKENA |
                                                    DIS_SDSAVE);
                msleep(20);
        }
}

static inline void r8152_mmd_indirect(struct r8152 *tp, u16 dev, u16 reg)
{
        ocp_reg_write(tp, OCP_EEE_AR, FUN_ADDR | dev);
        ocp_reg_write(tp, OCP_EEE_DATA, reg);
        ocp_reg_write(tp, OCP_EEE_AR, FUN_DATA | dev);
}

static u16 r8152_mmd_read(struct r8152 *tp, u16 dev, u16 reg)
{
        u16 data;

        r8152_mmd_indirect(tp, dev, reg);
        data = ocp_reg_read(tp, OCP_EEE_DATA);
        ocp_reg_write(tp, OCP_EEE_AR, 0x0000);

        return data;
}

static void r8152_mmd_write(struct r8152 *tp, u16 dev, u16 reg, u16 data)
{
        r8152_mmd_indirect(tp, dev, reg);
        ocp_reg_write(tp, OCP_EEE_DATA, data);
        ocp_reg_write(tp, OCP_EEE_AR, 0x0000);
}

static void r8152_eee_en(struct r8152 *tp, bool enable)
{
        u16 config1, config2, config3;
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEE_CR);
        config1 = ocp_reg_read(tp, OCP_EEE_CONFIG1) & ~sd_rise_time_mask;
        config2 = ocp_reg_read(tp, OCP_EEE_CONFIG2);
        config3 = ocp_reg_read(tp, OCP_EEE_CONFIG3) & ~fast_snr_mask;

        if (enable) {
                ocp_data |= EEE_RX_EN | EEE_TX_EN;
                config1 |= EEE_10_CAP | EEE_NWAY_EN | TX_QUIET_EN | RX_QUIET_EN;
                config1 |= sd_rise_time(1);
                config2 |= RG_DACQUIET_EN | RG_LDVQUIET_EN;
                config3 |= fast_snr(42);
        } else {
                ocp_data &= ~(EEE_RX_EN | EEE_TX_EN);
                config1 &= ~(EEE_10_CAP | EEE_NWAY_EN | TX_QUIET_EN |
                             RX_QUIET_EN);
                config1 |= sd_rise_time(7);
                config2 &= ~(RG_DACQUIET_EN | RG_LDVQUIET_EN);
                config3 |= fast_snr(511);
        }

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEE_CR, ocp_data);
        ocp_reg_write(tp, OCP_EEE_CONFIG1, config1);
        ocp_reg_write(tp, OCP_EEE_CONFIG2, config2);
        ocp_reg_write(tp, OCP_EEE_CONFIG3, config3);
}

static void r8153_eee_en(struct r8152 *tp, bool enable)
{
        u32 ocp_data;
        u16 config;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEE_CR);
        config = ocp_reg_read(tp, OCP_EEE_CFG);

        if (enable) {
                ocp_data |= EEE_RX_EN | EEE_TX_EN;
                config |= EEE10_EN;
        } else {
                ocp_data &= ~(EEE_RX_EN | EEE_TX_EN);
                config &= ~EEE10_EN;
        }

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEE_CR, ocp_data);
        ocp_reg_write(tp, OCP_EEE_CFG, config);

        tp->ups_info.eee = enable;
}

static void r8156_eee_en(struct r8152 *tp, bool enable)
{
        u16 config;

        r8153_eee_en(tp, enable);

        config = ocp_reg_read(tp, OCP_EEE_ADV2);

        if (enable)
                config |= MDIO_EEE_2_5GT;
        else
                config &= ~MDIO_EEE_2_5GT;

        ocp_reg_write(tp, OCP_EEE_ADV2, config);
}

static void rtl_eee_enable(struct r8152 *tp, bool enable)
{
        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_07:
                if (enable) {
                        r8152_eee_en(tp, true);
                        r8152_mmd_write(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV,
                                        tp->eee_adv);
                } else {
                        r8152_eee_en(tp, false);
                        r8152_mmd_write(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV, 0);
                }
                break;
        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_VER_14:
                if (enable) {
                        r8153_eee_en(tp, true);
                        ocp_reg_write(tp, OCP_EEE_ADV, tp->eee_adv);
                } else {
                        r8153_eee_en(tp, false);
                        ocp_reg_write(tp, OCP_EEE_ADV, 0);
                }
                break;
        case RTL_VER_10:
        case RTL_VER_11:
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
                if (enable) {
                        r8156_eee_en(tp, true);
                        ocp_reg_write(tp, OCP_EEE_ADV, tp->eee_adv);
                } else {
                        r8156_eee_en(tp, false);
                        ocp_reg_write(tp, OCP_EEE_ADV, 0);
                }
                break;
        default:
                break;
        }
}

static void r8152b_enable_fc(struct r8152 *tp)
{
        u16 anar;

        anar = r8152_mdio_read(tp, MII_ADVERTISE);
        anar |= ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM;
        r8152_mdio_write(tp, MII_ADVERTISE, anar);

        tp->ups_info.flow_control = true;
}

static void rtl8152_disable(struct r8152 *tp)
{
        r8152_aldps_en(tp, false);
        rtl_disable(tp);
        r8152_aldps_en(tp, true);
}

static void r8152b_hw_phy_cfg(struct r8152 *tp)
{
        rtl8152_apply_firmware(tp, false);
        rtl_eee_enable(tp, tp->eee_en);
        r8152_aldps_en(tp, true);
        r8152b_enable_fc(tp);

        set_bit(PHY_RESET, &tp->flags);
}

static void wait_oob_link_list_ready(struct r8152 *tp)
{
        u32 ocp_data;
        int i;

        for (i = 0; i < 1000; i++) {
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        break;
                ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
                if (ocp_data & LINK_LIST_READY)
                        break;
                usleep_range(1000, 2000);
        }
}

static void r8156b_wait_loading_flash(struct r8152 *tp)
{
        if ((ocp_read_word(tp, MCU_TYPE_PLA, PLA_GPHY_CTRL) & GPHY_FLASH) &&
            !(ocp_read_word(tp, MCU_TYPE_USB, USB_GPHY_CTRL) & BYPASS_FLASH)) {
                int i;

                for (i = 0; i < 100; i++) {
                        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                                break;
                        if (ocp_read_word(tp, MCU_TYPE_USB, USB_GPHY_CTRL) & GPHY_PATCH_DONE)
                                break;
                        usleep_range(1000, 2000);
                }
        }
}

static void r8152b_exit_oob(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data &= ~RCR_ACPT_ALL;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);

        rxdy_gated_en(tp, true);
        r8153_teredo_off(tp);
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, 0x00);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        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);

        wait_oob_link_list_ready(tp);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7);
        ocp_data |= RE_INIT_LL;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data);

        wait_oob_link_list_ready(tp);

        rtl8152_nic_reset(tp);

        /* rx share fifo credit full threshold */
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL0, RXFIFO_THR1_NORMAL);

        if (tp->udev->speed == USB_SPEED_FULL ||
            tp->udev->speed == USB_SPEED_LOW) {
                /* rx share fifo credit near full threshold */
                ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1,
                                RXFIFO_THR2_FULL);
                ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2,
                                RXFIFO_THR3_FULL);
        } else {
                /* rx share fifo credit near full threshold */
                ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1,
                                RXFIFO_THR2_HIGH);
                ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2,
                                RXFIFO_THR3_HIGH);
        }

        /* TX share fifo free credit full threshold */
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_TXFIFO_CTRL, TXFIFO_THR_NORMAL2);

        ocp_write_byte(tp, MCU_TYPE_USB, USB_TX_AGG, TX_AGG_MAX_THRESHOLD);
        ocp_write_dword(tp, MCU_TYPE_USB, USB_RX_BUF_TH, RX_THR_HIGH);
        ocp_write_dword(tp, MCU_TYPE_USB, USB_TX_DMA,
                        TEST_MODE_DISABLE | TX_SIZE_ADJUST1);

        rtl_rx_vlan_en(tp, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, RTL8152_RMS);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0);
        ocp_data |= TCR0_AUTO_FIFO;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_TCR0, ocp_data);
}

static void r8152b_enter_oob(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        ocp_data &= ~NOW_IS_OOB;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);

        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL0, RXFIFO_THR1_OOB);
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1, RXFIFO_THR2_OOB);
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2, RXFIFO_THR3_OOB);

        rtl_disable(tp);

        wait_oob_link_list_ready(tp);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7);
        ocp_data |= RE_INIT_LL;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data);

        wait_oob_link_list_ready(tp);

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, RTL8152_RMS);

        rtl_rx_vlan_en(tp, true);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_BDC_CR);
        ocp_data |= ALDPS_PROXY_MODE;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_BDC_CR, ocp_data);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        ocp_data |= NOW_IS_OOB | DIS_MCU_CLROOB;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);

        rxdy_gated_en(tp, false);

        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data |= RCR_APM | RCR_AM | RCR_AB;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);
}

static int r8153_pre_firmware_1(struct r8152 *tp)
{
        int i;

        /* Wait till the WTD timer is ready. It would take at most 104 ms. */
        for (i = 0; i < 104; i++) {
                u32 ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_WDT1_CTRL);

                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        return -ENODEV;
                if (!(ocp_data & WTD1_EN))
                        break;
                usleep_range(1000, 2000);
        }

        return 0;
}

static int r8153_post_firmware_1(struct r8152 *tp)
{
        /* set USB_BP_4 to support USB_SPEED_SUPER only */
        if (ocp_read_byte(tp, MCU_TYPE_USB, USB_CSTMR) & FORCE_SUPER)
                ocp_write_word(tp, MCU_TYPE_USB, USB_BP_4, BP4_SUPER_ONLY);

        /* reset UPHY timer to 36 ms */
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_UPHY_TIMER, 36000 / 16);

        return 0;
}

static int r8153_pre_firmware_2(struct r8152 *tp)
{
        u32 ocp_data;

        r8153_pre_firmware_1(tp);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN0);
        ocp_data &= ~FW_FIX_SUSPEND;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN0, ocp_data);

        return 0;
}

static int r8153_post_firmware_2(struct r8152 *tp)
{
        u32 ocp_data;

        /* enable bp0 if support USB_SPEED_SUPER only */
        if (ocp_read_byte(tp, MCU_TYPE_USB, USB_CSTMR) & FORCE_SUPER) {
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_BP_EN);
                ocp_data |= BIT(0);
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_BP_EN, ocp_data);
        }

        /* reset UPHY timer to 36 ms */
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_UPHY_TIMER, 36000 / 16);

        /* enable U3P3 check, set the counter to 4 */
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS, U3P3_CHECK_EN | 4);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN0);
        ocp_data |= FW_FIX_SUSPEND;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN0, ocp_data);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_USB2PHY);
        ocp_data |= USB2PHY_L1 | USB2PHY_SUSPEND;
        ocp_write_byte(tp, MCU_TYPE_USB, USB_USB2PHY, ocp_data);

        return 0;
}

static int r8153_post_firmware_3(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_USB2PHY);
        ocp_data |= USB2PHY_L1 | USB2PHY_SUSPEND;
        ocp_write_byte(tp, MCU_TYPE_USB, USB_USB2PHY, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN1);
        ocp_data |= FW_IP_RESET_EN;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN1, ocp_data);

        return 0;
}

static int r8153b_pre_firmware_1(struct r8152 *tp)
{
        /* enable fc timer and set timer to 1 second. */
        ocp_write_word(tp, MCU_TYPE_USB, USB_FC_TIMER,
                       CTRL_TIMER_EN | (1000 / 8));

        return 0;
}

static int r8153b_post_firmware_1(struct r8152 *tp)
{
        u32 ocp_data;

        /* enable bp0 for RTL8153-BND */
        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1);
        if (ocp_data & BND_MASK) {
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_BP_EN);
                ocp_data |= BIT(0);
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_BP_EN, ocp_data);
        }

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_CTRL);
        ocp_data |= FLOW_CTRL_PATCH_OPT;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_CTRL, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_TASK);
        ocp_data |= FC_PATCH_TASK;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN1);
        ocp_data |= FW_IP_RESET_EN;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN1, ocp_data);

        return 0;
}

static int r8153c_post_firmware_1(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_CTRL);
        ocp_data |= FLOW_CTRL_PATCH_2;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_CTRL, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_TASK);
        ocp_data |= FC_PATCH_TASK;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);

        return 0;
}

static int r8156a_post_firmware_1(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN1);
        ocp_data |= FW_IP_RESET_EN;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_FIX_EN1, ocp_data);

        /* Modify U3PHY parameter for compatibility issue */
        ocp_write_dword(tp, MCU_TYPE_USB, USB_UPHY3_MDCMDIO, 0x4026840e);
        ocp_write_dword(tp, MCU_TYPE_USB, USB_UPHY3_MDCMDIO, 0x4001acc9);

        return 0;
}

static void r8153_aldps_en(struct r8152 *tp, bool enable)
{
        u16 data;

        data = ocp_reg_read(tp, OCP_POWER_CFG);
        if (enable) {
                data |= EN_ALDPS;
                ocp_reg_write(tp, OCP_POWER_CFG, data);
        } else {
                int i;

                data &= ~EN_ALDPS;
                ocp_reg_write(tp, OCP_POWER_CFG, data);
                for (i = 0; i < 20; i++) {
                        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                                return;
                        usleep_range(1000, 2000);
                        if (ocp_read_word(tp, MCU_TYPE_PLA, 0xe000) & 0x0100)
                                break;
                }
        }

        tp->ups_info.aldps = enable;
}

static void r8153_hw_phy_cfg(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;

        /* disable ALDPS before updating the PHY parameters */
        r8153_aldps_en(tp, false);

        /* disable EEE before updating the PHY parameters */
        rtl_eee_enable(tp, false);

        rtl8152_apply_firmware(tp, false);

        if (tp->version == RTL_VER_03) {
                data = ocp_reg_read(tp, OCP_EEE_CFG);
                data &= ~CTAP_SHORT_EN;
                ocp_reg_write(tp, OCP_EEE_CFG, data);
        }

        data = ocp_reg_read(tp, OCP_POWER_CFG);
        data |= EEE_CLKDIV_EN;
        ocp_reg_write(tp, OCP_POWER_CFG, data);

        data = ocp_reg_read(tp, OCP_DOWN_SPEED);
        data |= EN_10M_BGOFF;
        ocp_reg_write(tp, OCP_DOWN_SPEED, data);
        data = ocp_reg_read(tp, OCP_POWER_CFG);
        data |= EN_10M_PLLOFF;
        ocp_reg_write(tp, OCP_POWER_CFG, data);
        sram_write(tp, SRAM_IMPEDANCE, 0x0b13);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR);
        ocp_data |= PFM_PWM_SWITCH;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR, ocp_data);

        /* Enable LPF corner auto tune */
        sram_write(tp, SRAM_LPF_CFG, 0xf70f);

        /* Adjust 10M Amplitude */
        sram_write(tp, SRAM_10M_AMP1, 0x00af);
        sram_write(tp, SRAM_10M_AMP2, 0x0208);

        if (tp->eee_en)
                rtl_eee_enable(tp, true);

        r8153_aldps_en(tp, true);
        r8152b_enable_fc(tp);

        switch (tp->version) {
        case RTL_VER_03:
        case RTL_VER_04:
                break;
        case RTL_VER_05:
        case RTL_VER_06:
        default:
                r8153_u2p3en(tp, true);
                break;
        }

        set_bit(PHY_RESET, &tp->flags);
}

static u32 r8152_efuse_read(struct r8152 *tp, u8 addr)
{
        u32 ocp_data;

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EFUSE_CMD, EFUSE_READ_CMD | addr);
        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EFUSE_CMD);
        ocp_data = (ocp_data & EFUSE_DATA_BIT16) << 9;  /* data of bit16 */
        ocp_data |= ocp_read_word(tp, MCU_TYPE_PLA, PLA_EFUSE_DATA);

        return ocp_data;
}

static void r8153b_hw_phy_cfg(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
        if (ocp_data & PCUT_STATUS) {
                ocp_data &= ~PCUT_STATUS;
                ocp_write_word(tp, MCU_TYPE_USB, USB_MISC_0, ocp_data);
        }

        /* disable ALDPS before updating the PHY parameters */
        r8153_aldps_en(tp, false);

        /* disable EEE before updating the PHY parameters */
        rtl_eee_enable(tp, false);

        /* U1/U2/L1 idle timer. 500 us */
        ocp_write_word(tp, MCU_TYPE_USB, USB_U1U2_TIMER, 500);

        data = r8153_phy_status(tp, 0);

        switch (data) {
        case PHY_STAT_PWRDN:
        case PHY_STAT_EXT_INIT:
                rtl8152_apply_firmware(tp, true);

                data = r8152_mdio_read(tp, MII_BMCR);
                data &= ~BMCR_PDOWN;
                r8152_mdio_write(tp, MII_BMCR, data);
                break;
        case PHY_STAT_LAN_ON:
        default:
                rtl8152_apply_firmware(tp, false);
                break;
        }

        r8153b_green_en(tp, test_bit(GREEN_ETHERNET, &tp->flags));

        data = sram_read(tp, SRAM_GREEN_CFG);
        data |= R_TUNE_EN;
        sram_write(tp, SRAM_GREEN_CFG, data);
        data = ocp_reg_read(tp, OCP_NCTL_CFG);
        data |= PGA_RETURN_EN;
        ocp_reg_write(tp, OCP_NCTL_CFG, data);

        /* ADC Bias Calibration:
         * read efuse offset 0x7d to get a 17-bit data. Remove the dummy/fake
         * bit (bit3) to rebuild the real 16-bit data. Write the data to the
         * ADC ioffset.
         */
        ocp_data = r8152_efuse_read(tp, 0x7d);
        data = (u16)(((ocp_data & 0x1fff0) >> 1) | (ocp_data & 0x7));
        if (data != 0xffff)
                ocp_reg_write(tp, OCP_ADC_IOFFSET, data);

        /* ups mode tx-link-pulse timing adjustment:
         * rg_saw_cnt = OCP reg 0xC426 Bit[13:0]
         * swr_cnt_1ms_ini = 16000000 / rg_saw_cnt
         */
        ocp_data = ocp_reg_read(tp, 0xc426);
        ocp_data &= 0x3fff;
        if (ocp_data) {
                u32 swr_cnt_1ms_ini;

                swr_cnt_1ms_ini = (16000000 / ocp_data) & SAW_CNT_1MS_MASK;
                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_UPS_CFG);
                ocp_data = (ocp_data & ~SAW_CNT_1MS_MASK) | swr_cnt_1ms_ini;
                ocp_write_word(tp, MCU_TYPE_USB, USB_UPS_CFG, ocp_data);
        }

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR);
        ocp_data |= PFM_PWM_SWITCH;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR, ocp_data);

        /* Advnace EEE */
        if (!rtl_phy_patch_request(tp, true, true)) {
                data = ocp_reg_read(tp, OCP_POWER_CFG);
                data |= EEE_CLKDIV_EN;
                ocp_reg_write(tp, OCP_POWER_CFG, data);
                tp->ups_info.eee_ckdiv = true;

                data = ocp_reg_read(tp, OCP_DOWN_SPEED);
                data |= EN_EEE_CMODE | EN_EEE_1000 | EN_10M_CLKDIV;
                ocp_reg_write(tp, OCP_DOWN_SPEED, data);
                tp->ups_info.eee_cmod_lv = true;
                tp->ups_info._10m_ckdiv = true;
                tp->ups_info.eee_plloff_giga = true;

                ocp_reg_write(tp, OCP_SYSCLK_CFG, 0);
                ocp_reg_write(tp, OCP_SYSCLK_CFG, clk_div_expo(5));
                tp->ups_info._250m_ckdiv = true;

                rtl_phy_patch_request(tp, false, true);
        }

        if (tp->eee_en)
                rtl_eee_enable(tp, true);

        r8153_aldps_en(tp, true);
        r8152b_enable_fc(tp);

        set_bit(PHY_RESET, &tp->flags);
}

static void r8153c_hw_phy_cfg(struct r8152 *tp)
{
        r8153b_hw_phy_cfg(tp);

        tp->ups_info.r_tune = true;
}

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;

        rxdy_gated_en(tp, true);
        r8153_teredo_off(tp);

        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data &= ~RCR_ACPT_ALL;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);

        rtl8152_nic_reset(tp);
        rtl_reset_bmu(tp);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        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);

        wait_oob_link_list_ready(tp);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7);
        ocp_data |= RE_INIT_LL;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data);

        wait_oob_link_list_ready(tp);

        rtl_rx_vlan_en(tp, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);

        rtl8153_change_mtu(tp);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0);
        ocp_data |= TCR0_AUTO_FIFO;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_TCR0, ocp_data);

        rtl8152_nic_reset(tp);

        /* rx share fifo credit full threshold */
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL0, RXFIFO_THR1_NORMAL);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1, RXFIFO_THR2_NORMAL);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2, RXFIFO_THR3_NORMAL);
        /* TX share fifo free credit full threshold */
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_TXFIFO_CTRL, TXFIFO_THR_NORMAL2);
}

static void r8153_enter_oob(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        ocp_data &= ~NOW_IS_OOB;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);

        /* RX FIFO settings for OOB */
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL0, RXFIFO_THR1_OOB);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1, RXFIFO_THR2_OOB);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2, RXFIFO_THR3_OOB);

        rtl_disable(tp);
        rtl_reset_bmu(tp);

        wait_oob_link_list_ready(tp);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7);
        ocp_data |= RE_INIT_LL;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data);

        wait_oob_link_list_ready(tp);

        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:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TEREDO_CFG);
                ocp_data &= ~TEREDO_WAKE_MASK;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_TEREDO_CFG, ocp_data);
                break;

        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_VER_14:
                /* 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.
                 */
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_TEREDO_WAKE_BASE, 0x00ff);
                break;

        default:
                break;
        }

        rtl_rx_vlan_en(tp, true);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_BDC_CR);
        ocp_data |= ALDPS_PROXY_MODE;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_BDC_CR, ocp_data);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        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);
        ocp_data |= RCR_APM | RCR_AM | RCR_AB;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);
}

static void rtl8153_disable(struct r8152 *tp)
{
        r8153_aldps_en(tp, false);
        rtl_disable(tp);
        rtl_reset_bmu(tp);
        r8153_aldps_en(tp, true);
}

static u32 fc_pause_on_auto(struct r8152 *tp)
{
        return (ALIGN(mtu_to_size(tp->netdev->mtu), 1024) + 6 * 1024);
}

static u32 fc_pause_off_auto(struct r8152 *tp)
{
        return (ALIGN(mtu_to_size(tp->netdev->mtu), 1024) + 14 * 1024);
}

static void r8156_fc_parameter(struct r8152 *tp)
{
        u32 pause_on = tp->fc_pause_on ? tp->fc_pause_on : fc_pause_on_auto(tp);
        u32 pause_off = tp->fc_pause_off ? tp->fc_pause_off : fc_pause_off_auto(tp);

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RX_FIFO_FULL, pause_on / 16);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RX_FIFO_EMPTY, pause_off / 16);
}

static int rtl8156_enable(struct r8152 *tp)
{
        u32 ocp_data;
        u16 speed;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        r8156_fc_parameter(tp);
        set_tx_qlen(tp);
        rtl_set_eee_plus(tp);
        r8153_set_rx_early_timeout(tp);
        r8153_set_rx_early_size(tp);

        speed = rtl8152_get_speed(tp);
        rtl_set_ifg(tp, speed);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4);
        if (speed & _2500bps)
                ocp_data &= ~IDLE_SPDWN_EN;
        else
                ocp_data |= IDLE_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, ocp_data);

        if (speed & _1000bps)
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEE_TXTWSYS, 0x11);
        else if (speed & _500bps)
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEE_TXTWSYS, 0x3d);

        if (tp->udev->speed == USB_SPEED_HIGH) {
                /* USB 0xb45e[3:0] l1_nyet_hird */
                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_L1_CTRL);
                ocp_data &= ~0xf;
                if (is_flow_control(speed))
                        ocp_data |= 0xf;
                else
                        ocp_data |= 0x1;
                ocp_write_word(tp, MCU_TYPE_USB, USB_L1_CTRL, ocp_data);
        }

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_TASK);
        ocp_data &= ~FC_PATCH_TASK;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);
        usleep_range(1000, 2000);
        ocp_data |= FC_PATCH_TASK;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);

        return rtl_enable(tp);
}

static void rtl8156_disable(struct r8152 *tp)
{
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RX_FIFO_FULL, 0);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RX_FIFO_EMPTY, 0);

        rtl8153_disable(tp);
}

static int rtl8156b_enable(struct r8152 *tp)
{
        u32 ocp_data;
        u16 speed;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        set_tx_qlen(tp);
        rtl_set_eee_plus(tp);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_RX_AGGR_NUM);
        ocp_data &= ~RX_AGGR_NUM_MASK;
        ocp_write_word(tp, MCU_TYPE_USB, USB_RX_AGGR_NUM, ocp_data);

        r8153_set_rx_early_timeout(tp);
        r8153_set_rx_early_size(tp);

        speed = rtl8152_get_speed(tp);
        rtl_set_ifg(tp, speed);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4);
        if (speed & _2500bps)
                ocp_data &= ~IDLE_SPDWN_EN;
        else
                ocp_data |= IDLE_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, ocp_data);

        if (tp->udev->speed == USB_SPEED_HIGH) {
                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_L1_CTRL);
                ocp_data &= ~0xf;
                if (is_flow_control(speed))
                        ocp_data |= 0xf;
                else
                        ocp_data |= 0x1;
                ocp_write_word(tp, MCU_TYPE_USB, USB_L1_CTRL, ocp_data);
        }

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_TASK);
        ocp_data &= ~FC_PATCH_TASK;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);
        usleep_range(1000, 2000);
        ocp_data |= FC_PATCH_TASK;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);

        return rtl_enable(tp);
}

static int rtl8152_set_speed(struct r8152 *tp, u8 autoneg, u32 speed, u8 duplex,
                             u32 advertising)
{
        u16 bmcr;
        int ret = 0;

        if (autoneg == AUTONEG_DISABLE) {
                if (duplex != DUPLEX_HALF && duplex != DUPLEX_FULL)
                        return -EINVAL;

                switch (speed) {
                case SPEED_10:
                        bmcr = BMCR_SPEED10;
                        if (duplex == DUPLEX_FULL) {
                                bmcr |= BMCR_FULLDPLX;
                                tp->ups_info.speed_duplex = FORCE_10M_FULL;
                        } else {
                                tp->ups_info.speed_duplex = FORCE_10M_HALF;
                        }
                        break;
                case SPEED_100:
                        bmcr = BMCR_SPEED100;
                        if (duplex == DUPLEX_FULL) {
                                bmcr |= BMCR_FULLDPLX;
                                tp->ups_info.speed_duplex = FORCE_100M_FULL;
                        } else {
                                tp->ups_info.speed_duplex = FORCE_100M_HALF;
                        }
                        break;
                case SPEED_1000:
                        if (tp->mii.supports_gmii) {
                                bmcr = BMCR_SPEED1000 | BMCR_FULLDPLX;
                                tp->ups_info.speed_duplex = NWAY_1000M_FULL;
                                break;
                        }
                        fallthrough;
                default:
                        ret = -EINVAL;
                        goto out;
                }

                if (duplex == DUPLEX_FULL)
                        tp->mii.full_duplex = 1;
                else
                        tp->mii.full_duplex = 0;

                tp->mii.force_media = 1;
        } else {
                u16 orig, new1;
                u32 support;

                support = RTL_ADVERTISED_10_HALF | RTL_ADVERTISED_10_FULL |
                          RTL_ADVERTISED_100_HALF | RTL_ADVERTISED_100_FULL;

                if (tp->mii.supports_gmii) {
                        support |= RTL_ADVERTISED_1000_FULL;

                        if (tp->support_2500full)
                                support |= RTL_ADVERTISED_2500_FULL;
                }

                if (!(advertising & support))
                        return -EINVAL;

                orig = r8152_mdio_read(tp, MII_ADVERTISE);
                new1 = orig & ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
                                ADVERTISE_100HALF | ADVERTISE_100FULL);
                if (advertising & RTL_ADVERTISED_10_HALF) {
                        new1 |= ADVERTISE_10HALF;
                        tp->ups_info.speed_duplex = NWAY_10M_HALF;
                }
                if (advertising & RTL_ADVERTISED_10_FULL) {
                        new1 |= ADVERTISE_10FULL;
                        tp->ups_info.speed_duplex = NWAY_10M_FULL;
                }

                if (advertising & RTL_ADVERTISED_100_HALF) {
                        new1 |= ADVERTISE_100HALF;
                        tp->ups_info.speed_duplex = NWAY_100M_HALF;
                }
                if (advertising & RTL_ADVERTISED_100_FULL) {
                        new1 |= ADVERTISE_100FULL;
                        tp->ups_info.speed_duplex = NWAY_100M_FULL;
                }

                if (orig != new1) {
                        r8152_mdio_write(tp, MII_ADVERTISE, new1);
                        tp->mii.advertising = new1;
                }

                if (tp->mii.supports_gmii) {
                        orig = r8152_mdio_read(tp, MII_CTRL1000);
                        new1 = orig & ~(ADVERTISE_1000FULL |
                                        ADVERTISE_1000HALF);

                        if (advertising & RTL_ADVERTISED_1000_FULL) {
                                new1 |= ADVERTISE_1000FULL;
                                tp->ups_info.speed_duplex = NWAY_1000M_FULL;
                        }

                        if (orig != new1)
                                r8152_mdio_write(tp, MII_CTRL1000, new1);
                }

                if (tp->support_2500full) {
                        orig = ocp_reg_read(tp, OCP_10GBT_CTRL);
                        new1 = orig & ~MDIO_AN_10GBT_CTRL_ADV2_5G;

                        if (advertising & RTL_ADVERTISED_2500_FULL) {
                                new1 |= MDIO_AN_10GBT_CTRL_ADV2_5G;
                                tp->ups_info.speed_duplex = NWAY_2500M_FULL;
                        }

                        if (orig != new1)
                                ocp_reg_write(tp, OCP_10GBT_CTRL, new1);
                }

                bmcr = BMCR_ANENABLE | BMCR_ANRESTART;

                tp->mii.force_media = 0;
        }

        if (test_and_clear_bit(PHY_RESET, &tp->flags))
                bmcr |= BMCR_RESET;

        r8152_mdio_write(tp, MII_BMCR, bmcr);

        if (bmcr & BMCR_RESET) {
                int i;

                for (i = 0; i < 50; i++) {
                        msleep(20);
                        if ((r8152_mdio_read(tp, MII_BMCR) & BMCR_RESET) == 0)
                                break;
                }
        }

out:
        return ret;
}

static void rtl8152_up(struct r8152 *tp)
{
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8152_aldps_en(tp, false);
        r8152b_exit_oob(tp);
        r8152_aldps_en(tp, true);
}

static void rtl8152_down(struct r8152 *tp)
{
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags)) {
                rtl_drop_queued_tx(tp);
                return;
        }

        r8152_power_cut_en(tp, false);
        r8152_aldps_en(tp, false);
        r8152b_enter_oob(tp);
        r8152_aldps_en(tp, true);
}

static void rtl8153_up(struct r8152 *tp)
{
        u32 ocp_data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153_u1u2en(tp, false);
        r8153_u2p3en(tp, false);
        r8153_aldps_en(tp, false);
        r8153_first_init(tp);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CONFIG6);
        ocp_data |= LANWAKE_CLR_EN;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CONFIG6, ocp_data);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_LWAKE_CTRL_REG);
        ocp_data &= ~LANWAKE_PIN;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_LWAKE_CTRL_REG, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_SSPHYLINK1);
        ocp_data &= ~DELAY_PHY_PWR_CHG;
        ocp_write_word(tp, MCU_TYPE_USB, USB_SSPHYLINK1, ocp_data);

        r8153_aldps_en(tp, true);

        switch (tp->version) {
        case RTL_VER_03:
        case RTL_VER_04:
                break;
        case RTL_VER_05:
        case RTL_VER_06:
        default:
                r8153_u2p3en(tp, true);
                break;
        }

        r8153_u1u2en(tp, true);
}

static void rtl8153_down(struct r8152 *tp)
{
        u32 ocp_data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags)) {
                rtl_drop_queued_tx(tp);
                return;
        }

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CONFIG6);
        ocp_data &= ~LANWAKE_CLR_EN;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CONFIG6, ocp_data);

        r8153_u1u2en(tp, false);
        r8153_u2p3en(tp, false);
        r8153_power_cut_en(tp, false);
        r8153_aldps_en(tp, false);
        r8153_enter_oob(tp);
        r8153_aldps_en(tp, true);
}

static void rtl8153b_up(struct r8152 *tp)
{
        u32 ocp_data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153b_u1u2en(tp, false);
        r8153_u2p3en(tp, false);
        r8153_aldps_en(tp, false);

        r8153_first_init(tp);
        ocp_write_dword(tp, MCU_TYPE_USB, USB_RX_BUF_TH, RX_THR_B);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3);
        ocp_data &= ~PLA_MCU_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data);

        r8153_aldps_en(tp, true);

        if (tp->udev->speed >= USB_SPEED_SUPER)
                r8153b_u1u2en(tp, true);
}

static void rtl8153b_down(struct r8152 *tp)
{
        u32 ocp_data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags)) {
                rtl_drop_queued_tx(tp);
                return;
        }

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3);
        ocp_data |= PLA_MCU_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data);

        r8153b_u1u2en(tp, false);
        r8153_u2p3en(tp, false);
        r8153b_power_cut_en(tp, false);
        r8153_aldps_en(tp, false);
        r8153_enter_oob(tp);
        r8153_aldps_en(tp, true);
}

static void rtl8153c_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, 10 * 1024 / 64);

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_TXFIFO_CTRL, 512 / 64);

        /* Adjust the tx fifo free credit full threshold, otherwise
         * the fifo would be too small to send a jumbo frame packet.
         */
        if (tp->netdev->mtu < 8000)
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_TXFIFO_FULL, 2048 / 8);
        else
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_TXFIFO_FULL, 900 / 8);
}

static void rtl8153c_up(struct r8152 *tp)
{
        u32 ocp_data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153b_u1u2en(tp, false);
        r8153_u2p3en(tp, false);
        r8153_aldps_en(tp, false);

        rxdy_gated_en(tp, true);
        r8153_teredo_off(tp);

        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data &= ~RCR_ACPT_ALL;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);

        rtl8152_nic_reset(tp);
        rtl_reset_bmu(tp);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        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);

        wait_oob_link_list_ready(tp);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7);
        ocp_data |= RE_INIT_LL;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_SFF_STS_7, ocp_data);

        wait_oob_link_list_ready(tp);

        rtl_rx_vlan_en(tp, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);

        rtl8153c_change_mtu(tp);

        rtl8152_nic_reset(tp);

        /* rx share fifo credit full threshold */
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL0, 0x02);
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_RXFIFO_FULL, 0x08);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL1, RXFIFO_THR2_NORMAL);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_CTRL2, RXFIFO_THR3_NORMAL);

        ocp_write_dword(tp, MCU_TYPE_USB, USB_RX_BUF_TH, RX_THR_B);

        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34);
        ocp_data |= BIT(8);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG34, ocp_data);

        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3);
        ocp_data &= ~PLA_MCU_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data);

        r8153_aldps_en(tp, true);
        r8153b_u1u2en(tp, true);
}

static void rtl8156_change_mtu(struct r8152 *tp)
{
        u32 rx_max_size = mtu_to_size(tp->netdev->mtu);

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, rx_max_size);
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
        r8156_fc_parameter(tp);

        /* TX share fifo free credit full threshold */
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_TXFIFO_CTRL, 512 / 64);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_TXFIFO_FULL,
                       ALIGN(rx_max_size + sizeof(struct tx_desc), 1024) / 16);
}

static void rtl8156_up(struct r8152 *tp)
{
        u32 ocp_data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153b_u1u2en(tp, false);
        r8153_u2p3en(tp, false);
        r8153_aldps_en(tp, false);

        rxdy_gated_en(tp, true);
        r8153_teredo_off(tp);

        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data &= ~RCR_ACPT_ALL;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);

        rtl8152_nic_reset(tp);
        rtl_reset_bmu(tp);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        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, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);

        rtl8156_change_mtu(tp);

        switch (tp->version) {
        case RTL_TEST_01:
        case RTL_VER_10:
        case RTL_VER_11:
                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_BMU_CONFIG);
                ocp_data |= ACT_ODMA;
                ocp_write_word(tp, MCU_TYPE_USB, USB_BMU_CONFIG, ocp_data);
                break;
        default:
                break;
        }

        /* share FIFO settings */
        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_FULL);
        ocp_data &= ~RXFIFO_FULL_MASK;
        ocp_data |= 0x08;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_FULL, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3);
        ocp_data &= ~PLA_MCU_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_SPEED_OPTION);
        ocp_data &= ~(RG_PWRDN_EN | ALL_SPEED_OFF);
        ocp_write_word(tp, MCU_TYPE_USB, USB_SPEED_OPTION, ocp_data);

        ocp_write_dword(tp, MCU_TYPE_USB, USB_RX_BUF_TH, 0x00600400);

        if (tp->saved_wolopts != __rtl_get_wol(tp)) {
                netif_warn(tp, ifup, tp->netdev, "wol setting is changed\n");
                __rtl_set_wol(tp, tp->saved_wolopts);
        }

        r8153_aldps_en(tp, true);
        r8153_u2p3en(tp, true);

        if (tp->udev->speed >= USB_SPEED_SUPER)
                r8153b_u1u2en(tp, true);
}

static void rtl8156_down(struct r8152 *tp)
{
        u32 ocp_data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags)) {
                rtl_drop_queued_tx(tp);
                return;
        }

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3);
        ocp_data |= PLA_MCU_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data);

        r8153b_u1u2en(tp, false);
        r8153_u2p3en(tp, false);
        r8153b_power_cut_en(tp, false);
        r8153_aldps_en(tp, false);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        ocp_data &= ~NOW_IS_OOB;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL, ocp_data);

        /* RX FIFO settings for OOB */
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RXFIFO_FULL, 64 / 16);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RX_FIFO_FULL, 1024 / 16);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RX_FIFO_EMPTY, 4096 / 16);

        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.
         */
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_TEREDO_WAKE_BASE, 0x00ff);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
        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);

        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data |= RCR_APM | RCR_AM | RCR_AB;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);

        r8153_aldps_en(tp, true);
}

static bool rtl8152_in_nway(struct r8152 *tp)
{
        u16 nway_state;

        ocp_write_word(tp, MCU_TYPE_PLA, PLA_OCP_GPHY_BASE, 0x2000);
        tp->ocp_base = 0x2000;
        ocp_write_byte(tp, MCU_TYPE_PLA, 0xb014, 0x4c);         /* phy state */
        nway_state = ocp_read_word(tp, MCU_TYPE_PLA, 0xb01a);

        /* bit 15: TXDIS_STATE, bit 14: ABD_STATE */
        if (nway_state & 0xc000)
                return false;
        else
                return true;
}

static bool rtl8153_in_nway(struct r8152 *tp)
{
        u16 phy_state = ocp_reg_read(tp, OCP_PHY_STATE) & 0xff;

        if (phy_state == TXDIS_STATE || phy_state == ABD_STATE)
                return false;
        else
                return true;
}

static void r8156_mdio_force_mode(struct r8152 *tp)
{
        u16 data;

        /* Select force mode through 0xa5b4 bit 15
         * 0: MDIO force mode
         * 1: MMD force mode
         */
        data = ocp_reg_read(tp, 0xa5b4);
        if (data & BIT(15)) {
                data &= ~BIT(15);
                ocp_reg_write(tp, 0xa5b4, data);
        }
}

static void set_carrier(struct r8152 *tp)
{
        struct net_device *netdev = tp->netdev;
        struct napi_struct *napi = &tp->napi;
        u16 speed;

        speed = rtl8152_get_speed(tp);

        if (speed & LINK_STATUS) {
                if (!netif_carrier_ok(netdev)) {
                        tp->rtl_ops.enable(tp);
                        netif_stop_queue(netdev);
                        napi_disable(napi);
                        netif_carrier_on(netdev);
                        rtl_start_rx(tp);
                        clear_bit(RTL8152_SET_RX_MODE, &tp->flags);
                        _rtl8152_set_rx_mode(netdev);
                        napi_enable(napi);
                        netif_wake_queue(netdev);
                        netif_info(tp, link, netdev, "carrier on\n");
                } else if (netif_queue_stopped(netdev) &&
                           skb_queue_len(&tp->tx_queue) < tp->tx_qlen) {
                        netif_wake_queue(netdev);
                }
        } else {
                if (netif_carrier_ok(netdev)) {
                        netif_carrier_off(netdev);
                        tasklet_disable(&tp->tx_tl);
                        napi_disable(napi);
                        tp->rtl_ops.disable(tp);
                        napi_enable(napi);
                        tasklet_enable(&tp->tx_tl);
                        netif_info(tp, link, netdev, "carrier off\n");
                }
        }
}

static void rtl_work_func_t(struct work_struct *work)
{
        struct r8152 *tp = container_of(work, struct r8152, schedule.work);

        /* If the device is unplugged or !netif_running(), the workqueue
         * doesn't need to wake the device, and could return directly.
         */
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags) || !netif_running(tp->netdev))
                return;

        if (usb_autopm_get_interface(tp->intf) < 0)
                return;

        if (!test_bit(WORK_ENABLE, &tp->flags))
                goto out1;

        if (!mutex_trylock(&tp->control)) {
                schedule_delayed_work(&tp->schedule, 0);
                goto out1;
        }

        if (test_and_clear_bit(RTL8152_LINK_CHG, &tp->flags))
                set_carrier(tp);

        if (test_and_clear_bit(RTL8152_SET_RX_MODE, &tp->flags))
                _rtl8152_set_rx_mode(tp->netdev);

        /* don't schedule tasket before linking */
        if (test_and_clear_bit(SCHEDULE_TASKLET, &tp->flags) &&
            netif_carrier_ok(tp->netdev))
                tasklet_schedule(&tp->tx_tl);

        if (test_and_clear_bit(RX_EPROTO, &tp->flags) &&
            !list_empty(&tp->rx_done))
                napi_schedule(&tp->napi);

        mutex_unlock(&tp->control);

out1:
        usb_autopm_put_interface(tp->intf);
}

static void rtl_hw_phy_work_func_t(struct work_struct *work)
{
        struct r8152 *tp = container_of(work, struct r8152, hw_phy_work.work);

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        if (usb_autopm_get_interface(tp->intf) < 0)
                return;

        mutex_lock(&tp->control);

        if (rtl8152_request_firmware(tp) == -ENODEV && tp->rtl_fw.retry) {
                tp->rtl_fw.retry = false;
                tp->rtl_fw.fw = NULL;

                /* Delay execution in case request_firmware() is not ready yet.
                 */
                queue_delayed_work(system_long_wq, &tp->hw_phy_work, HZ * 10);
                goto ignore_once;
        }

        tp->rtl_ops.hw_phy_cfg(tp);

        rtl8152_set_speed(tp, tp->autoneg, tp->speed, tp->duplex,
                          tp->advertising);

ignore_once:
        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);
}

#ifdef CONFIG_PM_SLEEP
static int rtl_notifier(struct notifier_block *nb, unsigned long action,
                        void *data)
{
        struct r8152 *tp = container_of(nb, struct r8152, pm_notifier);

        switch (action) {
        case PM_HIBERNATION_PREPARE:
        case PM_SUSPEND_PREPARE:
                usb_autopm_get_interface(tp->intf);
                break;

        case PM_POST_HIBERNATION:
        case PM_POST_SUSPEND:
                usb_autopm_put_interface(tp->intf);
                break;

        case PM_POST_RESTORE:
        case PM_RESTORE_PREPARE:
        default:
                break;
        }

        return NOTIFY_DONE;
}
#endif

static int rtl8152_open(struct net_device *netdev)
{
        struct r8152 *tp = netdev_priv(netdev);
        int res = 0;

        if (work_busy(&tp->hw_phy_work.work) & WORK_BUSY_PENDING) {
                cancel_delayed_work_sync(&tp->hw_phy_work);
                rtl_hw_phy_work_func_t(&tp->hw_phy_work.work);
        }

        res = alloc_all_mem(tp);
        if (res)
                goto out;

        res = usb_autopm_get_interface(tp->intf);
        if (res < 0)
                goto out_free;

        mutex_lock(&tp->control);

        tp->rtl_ops.up(tp);

        netif_carrier_off(netdev);
        netif_start_queue(netdev);
        set_bit(WORK_ENABLE, &tp->flags);

        res = usb_submit_urb(tp->intr_urb, GFP_KERNEL);
        if (res) {
                if (res == -ENODEV)
                        netif_device_detach(tp->netdev);
                netif_warn(tp, ifup, netdev, "intr_urb submit failed: %d\n",
                           res);
                goto out_unlock;
        }
        napi_enable(&tp->napi);
        tasklet_enable(&tp->tx_tl);

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);
#ifdef CONFIG_PM_SLEEP
        tp->pm_notifier.notifier_call = rtl_notifier;
        register_pm_notifier(&tp->pm_notifier);
#endif
        return 0;

out_unlock:
        mutex_unlock(&tp->control);
        usb_autopm_put_interface(tp->intf);
out_free:
        free_all_mem(tp);
out:
        return res;
}

static int rtl8152_close(struct net_device *netdev)
{
        struct r8152 *tp = netdev_priv(netdev);
        int res = 0;

#ifdef CONFIG_PM_SLEEP
        unregister_pm_notifier(&tp->pm_notifier);
#endif
        tasklet_disable(&tp->tx_tl);
        clear_bit(WORK_ENABLE, &tp->flags);
        usb_kill_urb(tp->intr_urb);
        cancel_delayed_work_sync(&tp->schedule);
        napi_disable(&tp->napi);
        netif_stop_queue(netdev);

        res = usb_autopm_get_interface(tp->intf);
        if (res < 0 || test_bit(RTL8152_INACCESSIBLE, &tp->flags)) {
                rtl_drop_queued_tx(tp);
                rtl_stop_rx(tp);
        } else {
                mutex_lock(&tp->control);

                tp->rtl_ops.down(tp);

                mutex_unlock(&tp->control);
        }

        if (!res)
                usb_autopm_put_interface(tp->intf);

        free_all_mem(tp);

        return res;
}

static void rtl_tally_reset(struct r8152 *tp)
{
        u32 ocp_data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_RSTTALLY);
        ocp_data |= TALLY_RESET;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RSTTALLY, ocp_data);
}

static void r8152b_init(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        data = r8152_mdio_read(tp, MII_BMCR);
        if (data & BMCR_PDOWN) {
                data &= ~BMCR_PDOWN;
                r8152_mdio_write(tp, MII_BMCR, data);
        }

        r8152_aldps_en(tp, false);

        if (tp->version == RTL_VER_01) {
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_LED_FEATURE);
                ocp_data &= ~LED_MODE_MASK;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_LED_FEATURE, ocp_data);
        }

        r8152_power_cut_en(tp, false);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR);
        ocp_data |= TX_10M_IDLE_EN | PFM_PWM_SWITCH;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR, ocp_data);
        ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL);
        ocp_data &= ~MCU_CLK_RATIO_MASK;
        ocp_data |= MCU_CLK_RATIO | D3_CLK_GATED_EN;
        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL, ocp_data);
        ocp_data = GPHY_STS_MSK | SPEED_DOWN_MSK |
                   SPDWN_RXDV_MSK | SPDWN_LINKCHG_MSK;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_GPHY_INTR_IMR, ocp_data);

        rtl_tally_reset(tp);

        /* enable rx aggregation */
        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
        ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
        ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);
}

static void r8153_init(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;
        int i;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153_u1u2en(tp, false);

        for (i = 0; i < 500; i++) {
                if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
                    AUTOLOAD_DONE)
                        break;

                msleep(20);
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        break;
        }

        data = r8153_phy_status(tp, 0);

        if (tp->version == RTL_VER_03 || tp->version == RTL_VER_04 ||
            tp->version == RTL_VER_05)
                ocp_reg_write(tp, OCP_ADC_CFG, CKADSEL_L | ADC_EN | EN_EMI_L);

        data = r8152_mdio_read(tp, MII_BMCR);
        if (data & BMCR_PDOWN) {
                data &= ~BMCR_PDOWN;
                r8152_mdio_write(tp, MII_BMCR, data);
        }

        data = r8153_phy_status(tp, PHY_STAT_LAN_ON);

        r8153_u2p3en(tp, false);

        if (tp->version == RTL_VER_04) {
                ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_SSPHYLINK2);
                ocp_data &= ~pwd_dn_scale_mask;
                ocp_data |= pwd_dn_scale(96);
                ocp_write_word(tp, MCU_TYPE_USB, USB_SSPHYLINK2, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_USB2PHY);
                ocp_data |= USB2PHY_L1 | USB2PHY_SUSPEND;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_USB2PHY, ocp_data);
        } else if (tp->version == RTL_VER_05) {
                ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_DMY_REG0);
                ocp_data &= ~ECM_ALDPS;
                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_DMY_REG0, ocp_data);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_CSR_DUMMY1);
                if (ocp_read_word(tp, MCU_TYPE_USB, USB_BURST_SIZE) == 0)
                        ocp_data &= ~DYNAMIC_BURST;
                else
                        ocp_data |= DYNAMIC_BURST;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_CSR_DUMMY1, ocp_data);
        } else if (tp->version == RTL_VER_06) {
                ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_CSR_DUMMY1);
                if (ocp_read_word(tp, MCU_TYPE_USB, USB_BURST_SIZE) == 0)
                        ocp_data &= ~DYNAMIC_BURST;
                else
                        ocp_data |= DYNAMIC_BURST;
                ocp_write_byte(tp, MCU_TYPE_USB, USB_CSR_DUMMY1, ocp_data);

                r8153_queue_wake(tp, false);

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS);
                if (rtl8152_get_speed(tp) & LINK_STATUS)
                        ocp_data |= CUR_LINK_OK;
                else
                        ocp_data &= ~CUR_LINK_OK;
                ocp_data |= POLL_LINK_CHG;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS, ocp_data);
        }

        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_CSR_DUMMY2);
        ocp_data |= EP4_FULL_FC;
        ocp_write_byte(tp, MCU_TYPE_USB, USB_CSR_DUMMY2, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_WDT11_CTRL);
        ocp_data &= ~TIMER11_EN;
        ocp_write_word(tp, MCU_TYPE_USB, USB_WDT11_CTRL, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_LED_FEATURE);
        ocp_data &= ~LED_MODE_MASK;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_LED_FEATURE, ocp_data);

        ocp_data = FIFO_EMPTY_1FB | ROK_EXIT_LPM;
        if (tp->version == RTL_VER_04 && tp->udev->speed < USB_SPEED_SUPER)
                ocp_data |= LPM_TIMER_500MS;
        else
                ocp_data |= LPM_TIMER_500US;
        ocp_write_byte(tp, MCU_TYPE_USB, USB_LPM_CTRL, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_AFE_CTRL2);
        ocp_data &= ~SEN_VAL_MASK;
        ocp_data |= SEN_VAL_NORMAL | SEL_RXIDLE;
        ocp_write_word(tp, MCU_TYPE_USB, USB_AFE_CTRL2, ocp_data);

        ocp_write_word(tp, MCU_TYPE_USB, USB_CONNECT_TIMER, 0x0001);

        r8153_power_cut_en(tp, false);
        rtl_runtime_suspend_enable(tp, false);
        r8153_mac_clk_speed_down(tp, false);
        r8153_u1u2en(tp, true);
        usb_enable_lpm(tp->udev);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CONFIG6);
        ocp_data |= LANWAKE_CLR_EN;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CONFIG6, ocp_data);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_LWAKE_CTRL_REG);
        ocp_data &= ~LANWAKE_PIN;
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_LWAKE_CTRL_REG, ocp_data);

        /* rx aggregation */
        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
        ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
        if (tp->dell_tb_rx_agg_bug)
                ocp_data |= RX_AGG_DISABLE;

        ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);

        rtl_tally_reset(tp);

        switch (tp->udev->speed) {
        case USB_SPEED_SUPER:
        case USB_SPEED_SUPER_PLUS:
                tp->coalesce = COALESCE_SUPER;
                break;
        case USB_SPEED_HIGH:
                tp->coalesce = COALESCE_HIGH;
                break;
        default:
                tp->coalesce = COALESCE_SLOW;
                break;
        }
}

static void r8153b_init(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;
        int i;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153b_u1u2en(tp, false);

        for (i = 0; i < 500; i++) {
                if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
                    AUTOLOAD_DONE)
                        break;

                msleep(20);
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        break;
        }

        data = r8153_phy_status(tp, 0);

        data = r8152_mdio_read(tp, MII_BMCR);
        if (data & BMCR_PDOWN) {
                data &= ~BMCR_PDOWN;
                r8152_mdio_write(tp, MII_BMCR, data);
        }

        data = r8153_phy_status(tp, PHY_STAT_LAN_ON);

        r8153_u2p3en(tp, false);

        /* MSC timer = 0xfff * 8ms = 32760 ms */
        ocp_write_word(tp, MCU_TYPE_USB, USB_MSC_TIMER, 0x0fff);

        r8153b_power_cut_en(tp, false);
        r8153b_ups_en(tp, false);
        r8153_queue_wake(tp, false);
        rtl_runtime_suspend_enable(tp, false);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS);
        if (rtl8152_get_speed(tp) & LINK_STATUS)
                ocp_data |= CUR_LINK_OK;
        else
                ocp_data &= ~CUR_LINK_OK;
        ocp_data |= POLL_LINK_CHG;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS, ocp_data);

        if (tp->udev->speed >= USB_SPEED_SUPER)
                r8153b_u1u2en(tp, true);

        usb_enable_lpm(tp->udev);

        /* MAC clock speed down */
        r8153_mac_clk_speed_down(tp, true);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3);
        ocp_data &= ~PLA_MCU_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data);

        if (tp->version == RTL_VER_09) {
                /* Disable Test IO for 32QFN */
                if (ocp_read_byte(tp, MCU_TYPE_PLA, 0xdc00) & BIT(5)) {
                        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR);
                        ocp_data |= TEST_IO_OFF;
                        ocp_write_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR, ocp_data);
                }
        }

        set_bit(GREEN_ETHERNET, &tp->flags);

        /* rx aggregation */
        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
        ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
        ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);

        rtl_tally_reset(tp);

        tp->coalesce = 15000;   /* 15 us */
}

static void r8153c_init(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;
        int i;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153b_u1u2en(tp, false);

        /* Disable spi_en */
        ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG);
        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG5);
        ocp_data &= ~BIT(3);
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG5, ocp_data);
        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, 0xcbf0);
        ocp_data |= BIT(1);
        ocp_write_word(tp, MCU_TYPE_USB, 0xcbf0, ocp_data);

        for (i = 0; i < 500; i++) {
                if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
                    AUTOLOAD_DONE)
                        break;

                msleep(20);
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        return;
        }

        data = r8153_phy_status(tp, 0);

        data = r8152_mdio_read(tp, MII_BMCR);
        if (data & BMCR_PDOWN) {
                data &= ~BMCR_PDOWN;
                r8152_mdio_write(tp, MII_BMCR, data);
        }

        data = r8153_phy_status(tp, PHY_STAT_LAN_ON);

        r8153_u2p3en(tp, false);

        /* MSC timer = 0xfff * 8ms = 32760 ms */
        ocp_write_word(tp, MCU_TYPE_USB, USB_MSC_TIMER, 0x0fff);

        r8153b_power_cut_en(tp, false);
        r8153c_ups_en(tp, false);
        r8153_queue_wake(tp, false);
        rtl_runtime_suspend_enable(tp, false);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS);
        if (rtl8152_get_speed(tp) & LINK_STATUS)
                ocp_data |= CUR_LINK_OK;
        else
                ocp_data &= ~CUR_LINK_OK;

        ocp_data |= POLL_LINK_CHG;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS, ocp_data);

        r8153b_u1u2en(tp, true);

        usb_enable_lpm(tp->udev);

        /* MAC clock speed down */
        r8153_mac_clk_speed_down(tp, true);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_2);
        ocp_data &= ~BIT(7);
        ocp_write_byte(tp, MCU_TYPE_USB, USB_MISC_2, ocp_data);

        set_bit(GREEN_ETHERNET, &tp->flags);

        /* rx aggregation */
        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
        ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
        ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);

        rtl_tally_reset(tp);

        tp->coalesce = 15000;   /* 15 us */
}

static void r8156_hw_phy_cfg(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
        if (ocp_data & PCUT_STATUS) {
                ocp_data &= ~PCUT_STATUS;
                ocp_write_word(tp, MCU_TYPE_USB, USB_MISC_0, ocp_data);
        }

        data = r8153_phy_status(tp, 0);
        switch (data) {
        case PHY_STAT_EXT_INIT:
                rtl8152_apply_firmware(tp, true);

                data = ocp_reg_read(tp, 0xa468);
                data &= ~(BIT(3) | BIT(1));
                ocp_reg_write(tp, 0xa468, data);
                break;
        case PHY_STAT_LAN_ON:
        case PHY_STAT_PWRDN:
        default:
                rtl8152_apply_firmware(tp, false);
                break;
        }

        /* disable ALDPS before updating the PHY parameters */
        r8153_aldps_en(tp, false);

        /* disable EEE before updating the PHY parameters */
        rtl_eee_enable(tp, false);

        data = r8153_phy_status(tp, PHY_STAT_LAN_ON);
        WARN_ON_ONCE(data != PHY_STAT_LAN_ON);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR);
        ocp_data |= PFM_PWM_SWITCH;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR, ocp_data);

        switch (tp->version) {
        case RTL_VER_10:
                data = ocp_reg_read(tp, 0xad40);
                data &= ~0x3ff;
                data |= BIT(7) | BIT(2);
                ocp_reg_write(tp, 0xad40, data);

                data = ocp_reg_read(tp, 0xad4e);
                data |= BIT(4);
                ocp_reg_write(tp, 0xad4e, data);
                data = ocp_reg_read(tp, 0xad16);
                data &= ~0x3ff;
                data |= 0x6;
                ocp_reg_write(tp, 0xad16, data);
                data = ocp_reg_read(tp, 0xad32);
                data &= ~0x3f;
                data |= 6;
                ocp_reg_write(tp, 0xad32, data);
                data = ocp_reg_read(tp, 0xac08);
                data &= ~(BIT(12) | BIT(8));
                ocp_reg_write(tp, 0xac08, data);
                data = ocp_reg_read(tp, 0xac8a);
                data |= BIT(12) | BIT(13) | BIT(14);
                data &= ~BIT(15);
                ocp_reg_write(tp, 0xac8a, data);
                data = ocp_reg_read(tp, 0xad18);
                data |= BIT(10);
                ocp_reg_write(tp, 0xad18, data);
                data = ocp_reg_read(tp, 0xad1a);
                data |= 0x3ff;
                ocp_reg_write(tp, 0xad1a, data);
                data = ocp_reg_read(tp, 0xad1c);
                data |= 0x3ff;
                ocp_reg_write(tp, 0xad1c, data);

                data = sram_read(tp, 0x80ea);
                data &= ~0xff00;
                data |= 0xc400;
                sram_write(tp, 0x80ea, data);
                data = sram_read(tp, 0x80eb);
                data &= ~0x0700;
                data |= 0x0300;
                sram_write(tp, 0x80eb, data);
                data = sram_read(tp, 0x80f8);
                data &= ~0xff00;
                data |= 0x1c00;
                sram_write(tp, 0x80f8, data);
                data = sram_read(tp, 0x80f1);
                data &= ~0xff00;
                data |= 0x3000;
                sram_write(tp, 0x80f1, data);

                data = sram_read(tp, 0x80fe);
                data &= ~0xff00;
                data |= 0xa500;
                sram_write(tp, 0x80fe, data);
                data = sram_read(tp, 0x8102);
                data &= ~0xff00;
                data |= 0x5000;
                sram_write(tp, 0x8102, data);
                data = sram_read(tp, 0x8015);
                data &= ~0xff00;
                data |= 0x3300;
                sram_write(tp, 0x8015, data);
                data = sram_read(tp, 0x8100);
                data &= ~0xff00;
                data |= 0x7000;
                sram_write(tp, 0x8100, data);
                data = sram_read(tp, 0x8014);
                data &= ~0xff00;
                data |= 0xf000;
                sram_write(tp, 0x8014, data);
                data = sram_read(tp, 0x8016);
                data &= ~0xff00;
                data |= 0x6500;
                sram_write(tp, 0x8016, data);
                data = sram_read(tp, 0x80dc);
                data &= ~0xff00;
                data |= 0xed00;
                sram_write(tp, 0x80dc, data);
                data = sram_read(tp, 0x80df);
                data |= BIT(8);
                sram_write(tp, 0x80df, data);
                data = sram_read(tp, 0x80e1);
                data &= ~BIT(8);
                sram_write(tp, 0x80e1, data);

                data = ocp_reg_read(tp, 0xbf06);
                data &= ~0x003f;
                data |= 0x0038;
                ocp_reg_write(tp, 0xbf06, data);

                sram_write(tp, 0x819f, 0xddb6);

                ocp_reg_write(tp, 0xbc34, 0x5555);
                data = ocp_reg_read(tp, 0xbf0a);
                data &= ~0x0e00;
                data |= 0x0a00;
                ocp_reg_write(tp, 0xbf0a, data);

                data = ocp_reg_read(tp, 0xbd2c);
                data &= ~BIT(13);
                ocp_reg_write(tp, 0xbd2c, data);
                break;
        case RTL_VER_11:
                data = ocp_reg_read(tp, 0xad16);
                data |= 0x3ff;
                ocp_reg_write(tp, 0xad16, data);
                data = ocp_reg_read(tp, 0xad32);
                data &= ~0x3f;
                data |= 6;
                ocp_reg_write(tp, 0xad32, data);
                data = ocp_reg_read(tp, 0xac08);
                data &= ~(BIT(12) | BIT(8));
                ocp_reg_write(tp, 0xac08, data);
                data = ocp_reg_read(tp, 0xacc0);
                data &= ~0x3;
                data |= BIT(1);
                ocp_reg_write(tp, 0xacc0, data);
                data = ocp_reg_read(tp, 0xad40);
                data &= ~0xe7;
                data |= BIT(6) | BIT(2);
                ocp_reg_write(tp, 0xad40, data);
                data = ocp_reg_read(tp, 0xac14);
                data &= ~BIT(7);
                ocp_reg_write(tp, 0xac14, data);
                data = ocp_reg_read(tp, 0xac80);
                data &= ~(BIT(8) | BIT(9));
                ocp_reg_write(tp, 0xac80, data);
                data = ocp_reg_read(tp, 0xac5e);
                data &= ~0x7;
                data |= BIT(1);
                ocp_reg_write(tp, 0xac5e, data);
                ocp_reg_write(tp, 0xad4c, 0x00a8);
                ocp_reg_write(tp, 0xac5c, 0x01ff);
                data = ocp_reg_read(tp, 0xac8a);
                data &= ~0xf0;
                data |= BIT(4) | BIT(5);
                ocp_reg_write(tp, 0xac8a, data);
                ocp_reg_write(tp, 0xb87c, 0x8157);
                data = ocp_reg_read(tp, 0xb87e);
                data &= ~0xff00;
                data |= 0x0500;
                ocp_reg_write(tp, 0xb87e, data);
                ocp_reg_write(tp, 0xb87c, 0x8159);
                data = ocp_reg_read(tp, 0xb87e);
                data &= ~0xff00;
                data |= 0x0700;
                ocp_reg_write(tp, 0xb87e, data);

                /* AAGC */
                ocp_reg_write(tp, 0xb87c, 0x80a2);
                ocp_reg_write(tp, 0xb87e, 0x0153);
                ocp_reg_write(tp, 0xb87c, 0x809c);
                ocp_reg_write(tp, 0xb87e, 0x0153);

                /* EEE parameter */
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEE_TXTWSYS_2P5G, 0x0056);

                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_USB_CFG);
                ocp_data |= EN_XG_LIP | EN_G_LIP;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_USB_CFG, ocp_data);

                sram_write(tp, 0x8257, 0x020f); /*  XG PLL */
                sram_write(tp, 0x80ea, 0x7843); /* GIGA Master */

                if (rtl_phy_patch_request(tp, true, true))
                        return;

                /* Advance EEE */
                ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4);
                ocp_data |= EEE_SPDWN_EN;
                ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, ocp_data);

                data = ocp_reg_read(tp, OCP_DOWN_SPEED);
                data &= ~(EN_EEE_100 | EN_EEE_1000);
                data |= EN_10M_CLKDIV;
                ocp_reg_write(tp, OCP_DOWN_SPEED, data);
                tp->ups_info._10m_ckdiv = true;
                tp->ups_info.eee_plloff_100 = false;
                tp->ups_info.eee_plloff_giga = false;

                data = ocp_reg_read(tp, OCP_POWER_CFG);
                data &= ~EEE_CLKDIV_EN;
                ocp_reg_write(tp, OCP_POWER_CFG, data);
                tp->ups_info.eee_ckdiv = false;

                ocp_reg_write(tp, OCP_SYSCLK_CFG, 0);
                ocp_reg_write(tp, OCP_SYSCLK_CFG, sysclk_div_expo(5));
                tp->ups_info._250m_ckdiv = false;

                rtl_phy_patch_request(tp, false, true);

                /* enable ADC Ibias Cal */
                data = ocp_reg_read(tp, 0xd068);
                data |= BIT(13);
                ocp_reg_write(tp, 0xd068, data);

                /* enable Thermal Sensor */
                data = sram_read(tp, 0x81a2);
                data &= ~BIT(8);
                sram_write(tp, 0x81a2, data);
                data = ocp_reg_read(tp, 0xb54c);
                data &= ~0xff00;
                data |= 0xdb00;
                ocp_reg_write(tp, 0xb54c, data);

                /* Nway 2.5G Lite */
                data = ocp_reg_read(tp, 0xa454);
                data &= ~BIT(0);
                ocp_reg_write(tp, 0xa454, data);

                /* CS DSP solution */
                data = ocp_reg_read(tp, OCP_10GBT_CTRL);
                data |= RTL_ADV2_5G_F_R;
                ocp_reg_write(tp, OCP_10GBT_CTRL, data);
                data = ocp_reg_read(tp, 0xad4e);
                data &= ~BIT(4);
                ocp_reg_write(tp, 0xad4e, data);
                data = ocp_reg_read(tp, 0xa86a);
                data &= ~BIT(0);
                ocp_reg_write(tp, 0xa86a, data);

                /* MDI SWAP */
                if ((ocp_read_word(tp, MCU_TYPE_USB, USB_UPS_CFG) & MID_REVERSE) &&
                    (ocp_reg_read(tp, 0xd068) & BIT(1))) {
                        u16 swap_a, swap_b;

                        data = ocp_reg_read(tp, 0xd068);
                        data &= ~0x1f;
                        data |= 0x1; /* p0 */
                        ocp_reg_write(tp, 0xd068, data);
                        swap_a = ocp_reg_read(tp, 0xd06a);
                        data &= ~0x18;
                        data |= 0x18; /* p3 */
                        ocp_reg_write(tp, 0xd068, data);
                        swap_b = ocp_reg_read(tp, 0xd06a);
                        data &= ~0x18; /* p0 */
                        ocp_reg_write(tp, 0xd068, data);
                        ocp_reg_write(tp, 0xd06a,
                                      (swap_a & ~0x7ff) | (swap_b & 0x7ff));
                        data |= 0x18; /* p3 */
                        ocp_reg_write(tp, 0xd068, data);
                        ocp_reg_write(tp, 0xd06a,
                                      (swap_b & ~0x7ff) | (swap_a & 0x7ff));
                        data &= ~0x18;
                        data |= 0x08; /* p1 */
                        ocp_reg_write(tp, 0xd068, data);
                        swap_a = ocp_reg_read(tp, 0xd06a);
                        data &= ~0x18;
                        data |= 0x10; /* p2 */
                        ocp_reg_write(tp, 0xd068, data);
                        swap_b = ocp_reg_read(tp, 0xd06a);
                        data &= ~0x18;
                        data |= 0x08; /* p1 */
                        ocp_reg_write(tp, 0xd068, data);
                        ocp_reg_write(tp, 0xd06a,
                                      (swap_a & ~0x7ff) | (swap_b & 0x7ff));
                        data &= ~0x18;
                        data |= 0x10; /* p2 */
                        ocp_reg_write(tp, 0xd068, data);
                        ocp_reg_write(tp, 0xd06a,
                                      (swap_b & ~0x7ff) | (swap_a & 0x7ff));
                        swap_a = ocp_reg_read(tp, 0xbd5a);
                        swap_b = ocp_reg_read(tp, 0xbd5c);
                        ocp_reg_write(tp, 0xbd5a, (swap_a & ~0x1f1f) |
                                      ((swap_b & 0x1f) << 8) |
                                      ((swap_b >> 8) & 0x1f));
                        ocp_reg_write(tp, 0xbd5c, (swap_b & ~0x1f1f) |
                                      ((swap_a & 0x1f) << 8) |
                                      ((swap_a >> 8) & 0x1f));
                        swap_a = ocp_reg_read(tp, 0xbc18);
                        swap_b = ocp_reg_read(tp, 0xbc1a);
                        ocp_reg_write(tp, 0xbc18, (swap_a & ~0x1f1f) |
                                      ((swap_b & 0x1f) << 8) |
                                      ((swap_b >> 8) & 0x1f));
                        ocp_reg_write(tp, 0xbc1a, (swap_b & ~0x1f1f) |
                                      ((swap_a & 0x1f) << 8) |
                                      ((swap_a >> 8) & 0x1f));
                }

                /* Notify the MAC when the speed is changed to force mode. */
                data = ocp_reg_read(tp, OCP_INTR_EN);
                data |= INTR_SPEED_FORCE;
                ocp_reg_write(tp, OCP_INTR_EN, data);
                break;
        default:
                break;
        }

        rtl_green_en(tp, test_bit(GREEN_ETHERNET, &tp->flags));

        data = ocp_reg_read(tp, 0xa428);
        data &= ~BIT(9);
        ocp_reg_write(tp, 0xa428, data);
        data = ocp_reg_read(tp, 0xa5ea);
        data &= ~BIT(0);
        ocp_reg_write(tp, 0xa5ea, data);
        tp->ups_info.lite_mode = 0;

        if (tp->eee_en)
                rtl_eee_enable(tp, true);

        r8153_aldps_en(tp, true);
        r8152b_enable_fc(tp);
        r8153_u2p3en(tp, true);

        set_bit(PHY_RESET, &tp->flags);
}

static void r8156b_hw_phy_cfg(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;

        switch (tp->version) {
        case RTL_VER_12:
                ocp_reg_write(tp, 0xbf86, 0x9000);
                data = ocp_reg_read(tp, 0xc402);
                data |= BIT(10);
                ocp_reg_write(tp, 0xc402, data);
                data &= ~BIT(10);
                ocp_reg_write(tp, 0xc402, data);
                ocp_reg_write(tp, 0xbd86, 0x1010);
                ocp_reg_write(tp, 0xbd88, 0x1010);
                data = ocp_reg_read(tp, 0xbd4e);
                data &= ~(BIT(10) | BIT(11));
                data |= BIT(11);
                ocp_reg_write(tp, 0xbd4e, data);
                data = ocp_reg_read(tp, 0xbf46);
                data &= ~0xf00;
                data |= 0x700;
                ocp_reg_write(tp, 0xbf46, data);
                break;
        case RTL_VER_13:
        case RTL_VER_15:
                r8156b_wait_loading_flash(tp);
                break;
        default:
                break;
        }

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
        if (ocp_data & PCUT_STATUS) {
                ocp_data &= ~PCUT_STATUS;
                ocp_write_word(tp, MCU_TYPE_USB, USB_MISC_0, ocp_data);
        }

        data = r8153_phy_status(tp, 0);
        switch (data) {
        case PHY_STAT_EXT_INIT:
                rtl8152_apply_firmware(tp, true);

                data = ocp_reg_read(tp, 0xa466);
                data &= ~BIT(0);
                ocp_reg_write(tp, 0xa466, data);

                data = ocp_reg_read(tp, 0xa468);
                data &= ~(BIT(3) | BIT(1));
                ocp_reg_write(tp, 0xa468, data);
                break;
        case PHY_STAT_LAN_ON:
        case PHY_STAT_PWRDN:
        default:
                rtl8152_apply_firmware(tp, false);
                break;
        }

        data = r8152_mdio_read(tp, MII_BMCR);
        if (data & BMCR_PDOWN) {
                data &= ~BMCR_PDOWN;
                r8152_mdio_write(tp, MII_BMCR, data);
        }

        /* disable ALDPS before updating the PHY parameters */
        r8153_aldps_en(tp, false);

        /* disable EEE before updating the PHY parameters */
        rtl_eee_enable(tp, false);

        data = r8153_phy_status(tp, PHY_STAT_LAN_ON);
        WARN_ON_ONCE(data != PHY_STAT_LAN_ON);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR);
        ocp_data |= PFM_PWM_SWITCH;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_PHY_PWR, ocp_data);

        switch (tp->version) {
        case RTL_VER_12:
                data = ocp_reg_read(tp, 0xbc08);
                data |= BIT(3) | BIT(2);
                ocp_reg_write(tp, 0xbc08, data);

                data = sram_read(tp, 0x8fff);
                data &= ~0xff00;
                data |= 0x0400;
                sram_write(tp, 0x8fff, data);

                data = ocp_reg_read(tp, 0xacda);
                data |= 0xff00;
                ocp_reg_write(tp, 0xacda, data);
                data = ocp_reg_read(tp, 0xacde);
                data |= 0xf000;
                ocp_reg_write(tp, 0xacde, data);
                ocp_reg_write(tp, 0xac8c, 0x0ffc);
                ocp_reg_write(tp, 0xac46, 0xb7b4);
                ocp_reg_write(tp, 0xac50, 0x0fbc);
                ocp_reg_write(tp, 0xac3c, 0x9240);
                ocp_reg_write(tp, 0xac4e, 0x0db4);
                ocp_reg_write(tp, 0xacc6, 0x0707);
                ocp_reg_write(tp, 0xacc8, 0xa0d3);
                ocp_reg_write(tp, 0xad08, 0x0007);

                ocp_reg_write(tp, 0xb87c, 0x8560);
                ocp_reg_write(tp, 0xb87e, 0x19cc);
                ocp_reg_write(tp, 0xb87c, 0x8562);
                ocp_reg_write(tp, 0xb87e, 0x19cc);
                ocp_reg_write(tp, 0xb87c, 0x8564);
                ocp_reg_write(tp, 0xb87e, 0x19cc);
                ocp_reg_write(tp, 0xb87c, 0x8566);
                ocp_reg_write(tp, 0xb87e, 0x147d);
                ocp_reg_write(tp, 0xb87c, 0x8568);
                ocp_reg_write(tp, 0xb87e, 0x147d);
                ocp_reg_write(tp, 0xb87c, 0x856a);
                ocp_reg_write(tp, 0xb87e, 0x147d);
                ocp_reg_write(tp, 0xb87c, 0x8ffe);
                ocp_reg_write(tp, 0xb87e, 0x0907);
                ocp_reg_write(tp, 0xb87c, 0x80d6);
                ocp_reg_write(tp, 0xb87e, 0x2801);
                ocp_reg_write(tp, 0xb87c, 0x80f2);
                ocp_reg_write(tp, 0xb87e, 0x2801);
                ocp_reg_write(tp, 0xb87c, 0x80f4);
                ocp_reg_write(tp, 0xb87e, 0x6077);
                ocp_reg_write(tp, 0xb506, 0x01e7);

                ocp_reg_write(tp, 0xb87c, 0x8013);
                ocp_reg_write(tp, 0xb87e, 0x0700);
                ocp_reg_write(tp, 0xb87c, 0x8fb9);
                ocp_reg_write(tp, 0xb87e, 0x2801);
                ocp_reg_write(tp, 0xb87c, 0x8fba);
                ocp_reg_write(tp, 0xb87e, 0x0100);
                ocp_reg_write(tp, 0xb87c, 0x8fbc);
                ocp_reg_write(tp, 0xb87e, 0x1900);
                ocp_reg_write(tp, 0xb87c, 0x8fbe);
                ocp_reg_write(tp, 0xb87e, 0xe100);
                ocp_reg_write(tp, 0xb87c, 0x8fc0);
                ocp_reg_write(tp, 0xb87e, 0x0800);
                ocp_reg_write(tp, 0xb87c, 0x8fc2);
                ocp_reg_write(tp, 0xb87e, 0xe500);
                ocp_reg_write(tp, 0xb87c, 0x8fc4);
                ocp_reg_write(tp, 0xb87e, 0x0f00);
                ocp_reg_write(tp, 0xb87c, 0x8fc6);
                ocp_reg_write(tp, 0xb87e, 0xf100);
                ocp_reg_write(tp, 0xb87c, 0x8fc8);
                ocp_reg_write(tp, 0xb87e, 0x0400);
                ocp_reg_write(tp, 0xb87c, 0x8fca);
                ocp_reg_write(tp, 0xb87e, 0xf300);
                ocp_reg_write(tp, 0xb87c, 0x8fcc);
                ocp_reg_write(tp, 0xb87e, 0xfd00);
                ocp_reg_write(tp, 0xb87c, 0x8fce);
                ocp_reg_write(tp, 0xb87e, 0xff00);
                ocp_reg_write(tp, 0xb87c, 0x8fd0);
                ocp_reg_write(tp, 0xb87e, 0xfb00);
                ocp_reg_write(tp, 0xb87c, 0x8fd2);
                ocp_reg_write(tp, 0xb87e, 0x0100);
                ocp_reg_write(tp, 0xb87c, 0x8fd4);
                ocp_reg_write(tp, 0xb87e, 0xf400);
                ocp_reg_write(tp, 0xb87c, 0x8fd6);
                ocp_reg_write(tp, 0xb87e, 0xff00);
                ocp_reg_write(tp, 0xb87c, 0x8fd8);
                ocp_reg_write(tp, 0xb87e, 0xf600);

                ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_USB_CFG);
                ocp_data |= EN_XG_LIP | EN_G_LIP;
                ocp_write_byte(tp, MCU_TYPE_PLA, PLA_USB_CFG, ocp_data);
                ocp_reg_write(tp, 0xb87c, 0x813d);
                ocp_reg_write(tp, 0xb87e, 0x390e);
                ocp_reg_write(tp, 0xb87c, 0x814f);
                ocp_reg_write(tp, 0xb87e, 0x790e);
                ocp_reg_write(tp, 0xb87c, 0x80b0);
                ocp_reg_write(tp, 0xb87e, 0x0f31);
                data = ocp_reg_read(tp, 0xbf4c);
                data |= BIT(1);
                ocp_reg_write(tp, 0xbf4c, data);
                data = ocp_reg_read(tp, 0xbcca);
                data |= BIT(9) | BIT(8);
                ocp_reg_write(tp, 0xbcca, data);
                ocp_reg_write(tp, 0xb87c, 0x8141);
                ocp_reg_write(tp, 0xb87e, 0x320e);
                ocp_reg_write(tp, 0xb87c, 0x8153);
                ocp_reg_write(tp, 0xb87e, 0x720e);
                ocp_reg_write(tp, 0xb87c, 0x8529);
                ocp_reg_write(tp, 0xb87e, 0x050e);
                data = ocp_reg_read(tp, OCP_EEE_CFG);
                data &= ~CTAP_SHORT_EN;
                ocp_reg_write(tp, OCP_EEE_CFG, data);

                sram_write(tp, 0x816c, 0xc4a0);
                sram_write(tp, 0x8170, 0xc4a0);
                sram_write(tp, 0x8174, 0x04a0);
                sram_write(tp, 0x8178, 0x04a0);
                sram_write(tp, 0x817c, 0x0719);
                sram_write(tp, 0x8ff4, 0x0400);
                sram_write(tp, 0x8ff1, 0x0404);

                ocp_reg_write(tp, 0xbf4a, 0x001b);
                ocp_reg_write(tp, 0xb87c, 0x8033);
                ocp_reg_write(tp, 0xb87e, 0x7c13);
                ocp_reg_write(tp, 0xb87c, 0x8037);
                ocp_reg_write(tp, 0xb87e, 0x7c13);
                ocp_reg_write(tp, 0xb87c, 0x803b);
                ocp_reg_write(tp, 0xb87e, 0xfc32);
                ocp_reg_write(tp, 0xb87c, 0x803f);
                ocp_reg_write(tp, 0xb87e, 0x7c13);
                ocp_reg_write(tp, 0xb87c, 0x8043);
                ocp_reg_write(tp, 0xb87e, 0x7c13);
                ocp_reg_write(tp, 0xb87c, 0x8047);
                ocp_reg_write(tp, 0xb87e, 0x7c13);

                ocp_reg_write(tp, 0xb87c, 0x8145);
                ocp_reg_write(tp, 0xb87e, 0x370e);
                ocp_reg_write(tp, 0xb87c, 0x8157);
                ocp_reg_write(tp, 0xb87e, 0x770e);
                ocp_reg_write(tp, 0xb87c, 0x8169);
                ocp_reg_write(tp, 0xb87e, 0x0d0a);
                ocp_reg_write(tp, 0xb87c, 0x817b);
                ocp_reg_write(tp, 0xb87e, 0x1d0a);

                data = sram_read(tp, 0x8217);
                data &= ~0xff00;
                data |= 0x5000;
                sram_write(tp, 0x8217, data);
                data = sram_read(tp, 0x821a);
                data &= ~0xff00;
                data |= 0x5000;
                sram_write(tp, 0x821a, data);
                sram_write(tp, 0x80da, 0x0403);
                data = sram_read(tp, 0x80dc);
                data &= ~0xff00;
                data |= 0x1000;
                sram_write(tp, 0x80dc, data);
                sram_write(tp, 0x80b3, 0x0384);
                sram_write(tp, 0x80b7, 0x2007);
                data = sram_read(tp, 0x80ba);
                data &= ~0xff00;
                data |= 0x6c00;
                sram_write(tp, 0x80ba, data);
                sram_write(tp, 0x80b5, 0xf009);
                data = sram_read(tp, 0x80bd);
                data &= ~0xff00;
                data |= 0x9f00;
                sram_write(tp, 0x80bd, data);
                sram_write(tp, 0x80c7, 0xf083);
                sram_write(tp, 0x80dd, 0x03f0);
                data = sram_read(tp, 0x80df);
                data &= ~0xff00;
                data |= 0x1000;
                sram_write(tp, 0x80df, data);
                sram_write(tp, 0x80cb, 0x2007);
                data = sram_read(tp, 0x80ce);
                data &= ~0xff00;
                data |= 0x6c00;
                sram_write(tp, 0x80ce, data);
                sram_write(tp, 0x80c9, 0x8009);
                data = sram_read(tp, 0x80d1);
                data &= ~0xff00;
                data |= 0x8000;
                sram_write(tp, 0x80d1, data);
                sram_write(tp, 0x80a3, 0x200a);
                sram_write(tp, 0x80a5, 0xf0ad);
                sram_write(tp, 0x809f, 0x6073);
                sram_write(tp, 0x80a1, 0x000b);
                data = sram_read(tp, 0x80a9);
                data &= ~0xff00;
                data |= 0xc000;
                sram_write(tp, 0x80a9, data);

                if (rtl_phy_patch_request(tp, true, true))
                        return;

                data = ocp_reg_read(tp, 0xb896);
                data &= ~BIT(0);
                ocp_reg_write(tp, 0xb896, data);
                data = ocp_reg_read(tp, 0xb892);
                data &= ~0xff00;
                ocp_reg_write(tp, 0xb892, data);
                ocp_reg_write(tp, 0xb88e, 0xc23e);
                ocp_reg_write(tp, 0xb890, 0x0000);
                ocp_reg_write(tp, 0xb88e, 0xc240);
                ocp_reg_write(tp, 0xb890, 0x0103);
                ocp_reg_write(tp, 0xb88e, 0xc242);
                ocp_reg_write(tp, 0xb890, 0x0507);
                ocp_reg_write(tp, 0xb88e, 0xc244);
                ocp_reg_write(tp, 0xb890, 0x090b);
                ocp_reg_write(tp, 0xb88e, 0xc246);
                ocp_reg_write(tp, 0xb890, 0x0c0e);
                ocp_reg_write(tp, 0xb88e, 0xc248);
                ocp_reg_write(tp, 0xb890, 0x1012);
                ocp_reg_write(tp, 0xb88e, 0xc24a);
                ocp_reg_write(tp, 0xb890, 0x1416);
                data = ocp_reg_read(tp, 0xb896);
                data |= BIT(0);
                ocp_reg_write(tp, 0xb896, data);

                rtl_phy_patch_request(tp, false, true);

                data = ocp_reg_read(tp, 0xa86a);
                data |= BIT(0);
                ocp_reg_write(tp, 0xa86a, data);
                data = ocp_reg_read(tp, 0xa6f0);
                data |= BIT(0);
                ocp_reg_write(tp, 0xa6f0, data);

                ocp_reg_write(tp, 0xbfa0, 0xd70d);
                ocp_reg_write(tp, 0xbfa2, 0x4100);
                ocp_reg_write(tp, 0xbfa4, 0xe868);
                ocp_reg_write(tp, 0xbfa6, 0xdc59);
                ocp_reg_write(tp, 0xb54c, 0x3c18);
                data = ocp_reg_read(tp, 0xbfa4);
                data &= ~BIT(5);
                ocp_reg_write(tp, 0xbfa4, data);
                data = sram_read(tp, 0x817d);
                data |= BIT(12);
                sram_write(tp, 0x817d, data);
                break;
        case RTL_VER_13:
                /* 2.5G INRX */
                data = ocp_reg_read(tp, 0xac46);
                data &= ~0x00f0;
                data |= 0x0090;
                ocp_reg_write(tp, 0xac46, data);
                data = ocp_reg_read(tp, 0xad30);
                data &= ~0x0003;
                data |= 0x0001;
                ocp_reg_write(tp, 0xad30, data);
                fallthrough;
        case RTL_VER_15:
                /* EEE parameter */
                ocp_reg_write(tp, 0xb87c, 0x80f5);
                ocp_reg_write(tp, 0xb87e, 0x760e);
                ocp_reg_write(tp, 0xb87c, 0x8107);
                ocp_reg_write(tp, 0xb87e, 0x360e);
                ocp_reg_write(tp, 0xb87c, 0x8551);
                data = ocp_reg_read(tp, 0xb87e);
                data &= ~0xff00;
                data |= 0x0800;
                ocp_reg_write(tp, 0xb87e, data);

                /* ADC_PGA parameter */
                data = ocp_reg_read(tp, 0xbf00);
                data &= ~0xe000;
                data |= 0xa000;
                ocp_reg_write(tp, 0xbf00, data);
                data = ocp_reg_read(tp, 0xbf46);
                data &= ~0x0f00;
                data |= 0x0300;
                ocp_reg_write(tp, 0xbf46, data);

                /* Green Table-PGA, 1G full viterbi */
                sram_write(tp, 0x8044, 0x2417);
                sram_write(tp, 0x804a, 0x2417);
                sram_write(tp, 0x8050, 0x2417);
                sram_write(tp, 0x8056, 0x2417);
                sram_write(tp, 0x805c, 0x2417);
                sram_write(tp, 0x8062, 0x2417);
                sram_write(tp, 0x8068, 0x2417);
                sram_write(tp, 0x806e, 0x2417);
                sram_write(tp, 0x8074, 0x2417);
                sram_write(tp, 0x807a, 0x2417);

                /* XG PLL */
                data = ocp_reg_read(tp, 0xbf84);
                data &= ~0xe000;
                data |= 0xa000;
                ocp_reg_write(tp, 0xbf84, data);
                break;
        default:
                break;
        }

        /* Notify the MAC when the speed is changed to force mode. */
        data = ocp_reg_read(tp, OCP_INTR_EN);
        data |= INTR_SPEED_FORCE;
        ocp_reg_write(tp, OCP_INTR_EN, data);

        if (rtl_phy_patch_request(tp, true, true))
                return;

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4);
        ocp_data |= EEE_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, ocp_data);

        data = ocp_reg_read(tp, OCP_DOWN_SPEED);
        data &= ~(EN_EEE_100 | EN_EEE_1000);
        data |= EN_10M_CLKDIV;
        ocp_reg_write(tp, OCP_DOWN_SPEED, data);
        tp->ups_info._10m_ckdiv = true;
        tp->ups_info.eee_plloff_100 = false;
        tp->ups_info.eee_plloff_giga = false;

        data = ocp_reg_read(tp, OCP_POWER_CFG);
        data &= ~EEE_CLKDIV_EN;
        ocp_reg_write(tp, OCP_POWER_CFG, data);
        tp->ups_info.eee_ckdiv = false;

        rtl_phy_patch_request(tp, false, true);

        rtl_green_en(tp, test_bit(GREEN_ETHERNET, &tp->flags));

        data = ocp_reg_read(tp, 0xa428);
        data &= ~BIT(9);
        ocp_reg_write(tp, 0xa428, data);
        data = ocp_reg_read(tp, 0xa5ea);
        data &= ~BIT(0);
        ocp_reg_write(tp, 0xa5ea, data);
        tp->ups_info.lite_mode = 0;

        if (tp->eee_en)
                rtl_eee_enable(tp, true);

        r8153_aldps_en(tp, true);
        r8152b_enable_fc(tp);
        r8153_u2p3en(tp, true);

        set_bit(PHY_RESET, &tp->flags);
}

static void r8156_init(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;
        int i;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_ECM_OP);
        ocp_data &= ~EN_ALL_SPEED;
        ocp_write_byte(tp, MCU_TYPE_USB, USB_ECM_OP, ocp_data);

        ocp_write_word(tp, MCU_TYPE_USB, USB_SPEED_OPTION, 0);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_ECM_OPTION);
        ocp_data |= BYPASS_MAC_RESET;
        ocp_write_word(tp, MCU_TYPE_USB, USB_ECM_OPTION, ocp_data);

        r8153b_u1u2en(tp, false);

        for (i = 0; i < 500; i++) {
                if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
                    AUTOLOAD_DONE)
                        break;

                msleep(20);
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        return;
        }

        data = r8153_phy_status(tp, 0);
        if (data == PHY_STAT_EXT_INIT) {
                data = ocp_reg_read(tp, 0xa468);
                data &= ~(BIT(3) | BIT(1));
                ocp_reg_write(tp, 0xa468, data);
        }

        data = r8152_mdio_read(tp, MII_BMCR);
        if (data & BMCR_PDOWN) {
                data &= ~BMCR_PDOWN;
                r8152_mdio_write(tp, MII_BMCR, data);
        }

        data = r8153_phy_status(tp, PHY_STAT_LAN_ON);
        WARN_ON_ONCE(data != PHY_STAT_LAN_ON);

        r8153_u2p3en(tp, false);

        /* MSC timer = 0xfff * 8ms = 32760 ms */
        ocp_write_word(tp, MCU_TYPE_USB, USB_MSC_TIMER, 0x0fff);

        /* U1/U2/L1 idle timer. 500 us */
        ocp_write_word(tp, MCU_TYPE_USB, USB_U1U2_TIMER, 500);

        r8153b_power_cut_en(tp, false);
        r8156_ups_en(tp, false);
        r8153_queue_wake(tp, false);
        rtl_runtime_suspend_enable(tp, false);

        if (tp->udev->speed >= USB_SPEED_SUPER)
                r8153b_u1u2en(tp, true);

        usb_enable_lpm(tp->udev);

        r8156_mac_clk_spd(tp, true);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3);
        ocp_data &= ~PLA_MCU_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS);
        if (rtl8152_get_speed(tp) & LINK_STATUS)
                ocp_data |= CUR_LINK_OK;
        else
                ocp_data &= ~CUR_LINK_OK;
        ocp_data |= POLL_LINK_CHG;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS, ocp_data);

        set_bit(GREEN_ETHERNET, &tp->flags);

        /* rx aggregation */
        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
        ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
        ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);

        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_BMU_CONFIG);
        ocp_data |= ACT_ODMA;
        ocp_write_byte(tp, MCU_TYPE_USB, USB_BMU_CONFIG, ocp_data);

        r8156_mdio_force_mode(tp);
        rtl_tally_reset(tp);

        tp->coalesce = 15000;   /* 15 us */
}

static void r8156b_init(struct r8152 *tp)
{
        u32 ocp_data;
        u16 data;
        int i;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_ECM_OP);
        ocp_data &= ~EN_ALL_SPEED;
        ocp_write_byte(tp, MCU_TYPE_USB, USB_ECM_OP, ocp_data);

        ocp_write_word(tp, MCU_TYPE_USB, USB_SPEED_OPTION, 0);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_ECM_OPTION);
        ocp_data |= BYPASS_MAC_RESET;
        ocp_write_word(tp, MCU_TYPE_USB, USB_ECM_OPTION, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL);
        ocp_data |= RX_DETECT8;
        ocp_write_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL, ocp_data);

        r8153b_u1u2en(tp, false);

        switch (tp->version) {
        case RTL_VER_13:
        case RTL_VER_15:
                r8156b_wait_loading_flash(tp);
                break;
        default:
                break;
        }

        for (i = 0; i < 500; i++) {
                if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
                    AUTOLOAD_DONE)
                        break;

                msleep(20);
                if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                        return;
        }

        data = r8153_phy_status(tp, 0);
        if (data == PHY_STAT_EXT_INIT) {
                data = ocp_reg_read(tp, 0xa468);
                data &= ~(BIT(3) | BIT(1));
                ocp_reg_write(tp, 0xa468, data);

                data = ocp_reg_read(tp, 0xa466);
                data &= ~BIT(0);
                ocp_reg_write(tp, 0xa466, data);
        }

        data = r8152_mdio_read(tp, MII_BMCR);
        if (data & BMCR_PDOWN) {
                data &= ~BMCR_PDOWN;
                r8152_mdio_write(tp, MII_BMCR, data);
        }

        data = r8153_phy_status(tp, PHY_STAT_LAN_ON);

        r8153_u2p3en(tp, false);

        /* MSC timer = 0xfff * 8ms = 32760 ms */
        ocp_write_word(tp, MCU_TYPE_USB, USB_MSC_TIMER, 0x0fff);

        /* U1/U2/L1 idle timer. 500 us */
        ocp_write_word(tp, MCU_TYPE_USB, USB_U1U2_TIMER, 500);

        r8153b_power_cut_en(tp, false);
        r8156_ups_en(tp, false);
        r8153_queue_wake(tp, false);
        rtl_runtime_suspend_enable(tp, false);

        if (tp->udev->speed >= USB_SPEED_SUPER)
                r8153b_u1u2en(tp, true);

        usb_enable_lpm(tp->udev);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_RCR);
        ocp_data &= ~SLOT_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CPCR);
        ocp_data |= FLOW_CTRL_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_CPCR, ocp_data);

        /* enable fc timer and set timer to 600 ms. */
        ocp_write_word(tp, MCU_TYPE_USB, USB_FC_TIMER,
                       CTRL_TIMER_EN | (600 / 8));

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_CTRL);
        if (!(ocp_read_word(tp, MCU_TYPE_PLA, PLA_POL_GPIO_CTRL) & DACK_DET_EN))
                ocp_data |= FLOW_CTRL_PATCH_2;
        ocp_data &= ~AUTO_SPEEDUP;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_CTRL, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_FW_TASK);
        ocp_data |= FC_PATCH_TASK;
        ocp_write_word(tp, MCU_TYPE_USB, USB_FW_TASK, ocp_data);

        r8156_mac_clk_spd(tp, true);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3);
        ocp_data &= ~PLA_MCU_SPDWN_EN;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, ocp_data);

        ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS);
        if (rtl8152_get_speed(tp) & LINK_STATUS)
                ocp_data |= CUR_LINK_OK;
        else
                ocp_data &= ~CUR_LINK_OK;
        ocp_data |= POLL_LINK_CHG;
        ocp_write_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS, ocp_data);

        set_bit(GREEN_ETHERNET, &tp->flags);

        /* rx aggregation */
        ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
        ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
        ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);

        r8156_mdio_force_mode(tp);
        rtl_tally_reset(tp);

        tp->coalesce = 15000;   /* 15 us */
}

static bool rtl_check_vendor_ok(struct usb_interface *intf)
{
        struct usb_host_interface *alt = intf->cur_altsetting;
        struct usb_endpoint_descriptor *in, *out, *intr;

        if (usb_find_common_endpoints(alt, &in, &out, &intr, NULL) < 0) {
                dev_err(&intf->dev, "Expected endpoints are not found\n");
                return false;
        }

        /* Check Rx endpoint address */
        if (usb_endpoint_num(in) != 1) {
                dev_err(&intf->dev, "Invalid Rx endpoint address\n");
                return false;
        }

        /* Check Tx endpoint address */
        if (usb_endpoint_num(out) != 2) {
                dev_err(&intf->dev, "Invalid Tx endpoint address\n");
                return false;
        }

        /* Check interrupt endpoint address */
        if (usb_endpoint_num(intr) != 3) {
                dev_err(&intf->dev, "Invalid interrupt endpoint address\n");
                return false;
        }

        return true;
}

static int rtl8152_pre_reset(struct usb_interface *intf)
{
        struct r8152 *tp = usb_get_intfdata(intf);
        struct net_device *netdev;

        rtnl_lock();

        if (!tp || !test_bit(PROBED_WITH_NO_ERRORS, &tp->flags))
                return 0;

        netdev = tp->netdev;
        if (!netif_running(netdev))
                return 0;

        netif_stop_queue(netdev);
        tasklet_disable(&tp->tx_tl);
        clear_bit(WORK_ENABLE, &tp->flags);
        usb_kill_urb(tp->intr_urb);
        cancel_delayed_work_sync(&tp->schedule);
        napi_disable(&tp->napi);
        if (netif_carrier_ok(netdev)) {
                mutex_lock(&tp->control);
                set_bit(IN_PRE_RESET, &tp->flags);
                tp->rtl_ops.disable(tp);
                clear_bit(IN_PRE_RESET, &tp->flags);
                mutex_unlock(&tp->control);
        }

        return 0;
}

static int rtl8152_post_reset(struct usb_interface *intf)
{
        struct r8152 *tp = usb_get_intfdata(intf);
        struct net_device *netdev;
        struct sockaddr sa;

        if (!tp || !test_bit(PROBED_WITH_NO_ERRORS, &tp->flags))
                goto exit;

        rtl_set_accessible(tp);

        /* reset the MAC address in case of policy change */
        if (determine_ethernet_addr(tp, &sa) >= 0)
                dev_set_mac_address (tp->netdev, &sa, NULL);

        netdev = tp->netdev;
        if (!netif_running(netdev))
                goto exit;

        set_bit(WORK_ENABLE, &tp->flags);
        if (netif_carrier_ok(netdev)) {
                mutex_lock(&tp->control);
                tp->rtl_ops.enable(tp);
                rtl_start_rx(tp);
                _rtl8152_set_rx_mode(netdev);
                mutex_unlock(&tp->control);
        }

        napi_enable(&tp->napi);
        tasklet_enable(&tp->tx_tl);
        netif_wake_queue(netdev);
        usb_submit_urb(tp->intr_urb, GFP_KERNEL);

        if (!list_empty(&tp->rx_done))
                napi_schedule(&tp->napi);

exit:
        rtnl_unlock();
        return 0;
}

static bool delay_autosuspend(struct r8152 *tp)
{
        bool sw_linking = !!netif_carrier_ok(tp->netdev);
        bool hw_linking = !!(rtl8152_get_speed(tp) & LINK_STATUS);

        /* This means a linking change occurs and the driver doesn't detect it,
         * yet. If the driver has disabled tx/rx and hw is linking on, the
         * device wouldn't wake up by receiving any packet.
         */
        if (work_busy(&tp->schedule.work) || sw_linking != hw_linking)
                return true;

        /* If the linking down is occurred by nway, the device may miss the
         * linking change event. And it wouldn't wake when linking on.
         */
        if (!sw_linking && tp->rtl_ops.in_nway(tp))
                return true;
        else if (!skb_queue_empty(&tp->tx_queue))
                return true;
        else
                return false;
}

static int rtl8152_runtime_resume(struct r8152 *tp)
{
        struct net_device *netdev = tp->netdev;

        if (netif_running(netdev) && netdev->flags & IFF_UP) {
                struct napi_struct *napi = &tp->napi;

                tp->rtl_ops.autosuspend_en(tp, false);
                napi_disable(napi);
                set_bit(WORK_ENABLE, &tp->flags);

                if (netif_carrier_ok(netdev)) {
                        if (rtl8152_get_speed(tp) & LINK_STATUS) {
                                rtl_start_rx(tp);
                        } else {
                                netif_carrier_off(netdev);
                                tp->rtl_ops.disable(tp);
                                netif_info(tp, link, netdev, "linking down\n");
                        }
                }

                napi_enable(napi);
                clear_bit(SELECTIVE_SUSPEND, &tp->flags);
                smp_mb__after_atomic();

                if (!list_empty(&tp->rx_done))
                        napi_schedule(&tp->napi);

                usb_submit_urb(tp->intr_urb, GFP_NOIO);
        } else {
                if (netdev->flags & IFF_UP)
                        tp->rtl_ops.autosuspend_en(tp, false);

                clear_bit(SELECTIVE_SUSPEND, &tp->flags);
        }

        return 0;
}

static int rtl8152_system_resume(struct r8152 *tp)
{
        struct net_device *netdev = tp->netdev;

        netif_device_attach(netdev);

        if (netif_running(netdev) && (netdev->flags & IFF_UP)) {
                tp->rtl_ops.up(tp);
                netif_carrier_off(netdev);
                set_bit(WORK_ENABLE, &tp->flags);
                usb_submit_urb(tp->intr_urb, GFP_NOIO);
        }

        /* If the device is RTL8152_INACCESSIBLE here then we should do a
         * reset. This is important because the usb_lock_device_for_reset()
         * that happens as a result of usb_queue_reset_device() will silently
         * fail if the device was suspended or if too much time passed.
         *
         * NOTE: The device is locked here so we can directly do the reset.
         * We don't need usb_lock_device_for_reset() because that's just a
         * wrapper over device_lock() and device_resume() (which calls us)
         * does that for us.
         */
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                usb_reset_device(tp->udev);

        return 0;
}

static int rtl8152_runtime_suspend(struct r8152 *tp)
{
        struct net_device *netdev = tp->netdev;
        int ret = 0;

        if (!tp->rtl_ops.autosuspend_en)
                return -EBUSY;

        set_bit(SELECTIVE_SUSPEND, &tp->flags);
        smp_mb__after_atomic();

        if (netif_running(netdev) && test_bit(WORK_ENABLE, &tp->flags)) {
                u32 rcr = 0;

                if (netif_carrier_ok(netdev)) {
                        u32 ocp_data;

                        rcr = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR);
                        ocp_data = rcr & ~RCR_ACPT_ALL;
                        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);
                        rxdy_gated_en(tp, true);
                        ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA,
                                                 PLA_OOB_CTRL);
                        if (!(ocp_data & RXFIFO_EMPTY)) {
                                rxdy_gated_en(tp, false);
                                ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, rcr);
                                clear_bit(SELECTIVE_SUSPEND, &tp->flags);
                                smp_mb__after_atomic();
                                ret = -EBUSY;
                                goto out1;
                        }
                }

                clear_bit(WORK_ENABLE, &tp->flags);
                usb_kill_urb(tp->intr_urb);

                tp->rtl_ops.autosuspend_en(tp, true);

                if (netif_carrier_ok(netdev)) {
                        struct napi_struct *napi = &tp->napi;

                        napi_disable(napi);
                        rtl_stop_rx(tp);
                        rxdy_gated_en(tp, false);
                        ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, rcr);
                        napi_enable(napi);
                }

                if (delay_autosuspend(tp)) {
                        rtl8152_runtime_resume(tp);
                        ret = -EBUSY;
                }
        }

out1:
        return ret;
}

static int rtl8152_system_suspend(struct r8152 *tp)
{
        struct net_device *netdev = tp->netdev;

        netif_device_detach(netdev);

        if (netif_running(netdev) && test_bit(WORK_ENABLE, &tp->flags)) {
                struct napi_struct *napi = &tp->napi;

                clear_bit(WORK_ENABLE, &tp->flags);
                usb_kill_urb(tp->intr_urb);
                tasklet_disable(&tp->tx_tl);
                napi_disable(napi);
                cancel_delayed_work_sync(&tp->schedule);
                tp->rtl_ops.down(tp);
                napi_enable(napi);
                tasklet_enable(&tp->tx_tl);
        }

        /* If we're inaccessible here then some of the work that we did to
         * get the adapter ready for suspend didn't work. Queue up a wakeup
         * event so we can try again.
         */
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                pm_wakeup_event(&tp->udev->dev, 0);

        return 0;
}

static int rtl8152_suspend(struct usb_interface *intf, pm_message_t message)
{
        struct r8152 *tp = usb_get_intfdata(intf);
        int ret;

        mutex_lock(&tp->control);

        if (PMSG_IS_AUTO(message))
                ret = rtl8152_runtime_suspend(tp);
        else
                ret = rtl8152_system_suspend(tp);

        mutex_unlock(&tp->control);

        return ret;
}

static int rtl8152_resume(struct usb_interface *intf)
{
        struct r8152 *tp = usb_get_intfdata(intf);
        int ret;

        mutex_lock(&tp->control);

        rtl_reset_ocp_base(tp);

        if (test_bit(SELECTIVE_SUSPEND, &tp->flags))
                ret = rtl8152_runtime_resume(tp);
        else
                ret = rtl8152_system_resume(tp);

        mutex_unlock(&tp->control);

        return ret;
}

static int rtl8152_reset_resume(struct usb_interface *intf)
{
        struct r8152 *tp = usb_get_intfdata(intf);

        clear_bit(SELECTIVE_SUSPEND, &tp->flags);
        rtl_reset_ocp_base(tp);
        tp->rtl_ops.init(tp);
        queue_delayed_work(system_long_wq, &tp->hw_phy_work, 0);
        set_ethernet_addr(tp, true);
        return rtl8152_resume(intf);
}

static void rtl8152_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
        struct r8152 *tp = netdev_priv(dev);

        if (usb_autopm_get_interface(tp->intf) < 0)
                return;

        if (!rtl_can_wakeup(tp)) {
                wol->supported = 0;
                wol->wolopts = 0;
        } else {
                mutex_lock(&tp->control);
                wol->supported = WAKE_ANY;
                wol->wolopts = __rtl_get_wol(tp);
                mutex_unlock(&tp->control);
        }

        usb_autopm_put_interface(tp->intf);
}

static int rtl8152_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
        struct r8152 *tp = netdev_priv(dev);
        int ret;

        if (!rtl_can_wakeup(tp))
                return -EOPNOTSUPP;

        if (wol->wolopts & ~WAKE_ANY)
                return -EINVAL;

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                goto out_set_wol;

        mutex_lock(&tp->control);

        __rtl_set_wol(tp, wol->wolopts);
        tp->saved_wolopts = wol->wolopts & WAKE_ANY;

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

out_set_wol:
        return ret;
}

static u32 rtl8152_get_msglevel(struct net_device *dev)
{
        struct r8152 *tp = netdev_priv(dev);

        return tp->msg_enable;
}

static void rtl8152_set_msglevel(struct net_device *dev, u32 value)
{
        struct r8152 *tp = netdev_priv(dev);

        tp->msg_enable = value;
}

static void rtl8152_get_drvinfo(struct net_device *netdev,
                                struct ethtool_drvinfo *info)
{
        struct r8152 *tp = netdev_priv(netdev);

        strscpy(info->driver, MODULENAME, sizeof(info->driver));
        strscpy(info->version, DRIVER_VERSION, sizeof(info->version));
        usb_make_path(tp->udev, info->bus_info, sizeof(info->bus_info));
        if (!IS_ERR_OR_NULL(tp->rtl_fw.fw))
                strscpy(info->fw_version, tp->rtl_fw.version,
                        sizeof(info->fw_version));
}

static
int rtl8152_get_link_ksettings(struct net_device *netdev,
                               struct ethtool_link_ksettings *cmd)
{
        struct r8152 *tp = netdev_priv(netdev);
        int ret;

        if (!tp->mii.mdio_read)
                return -EOPNOTSUPP;

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                goto out;

        mutex_lock(&tp->control);

        mii_ethtool_get_link_ksettings(&tp->mii, cmd);

        linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
                         cmd->link_modes.supported, tp->support_2500full);

        if (tp->support_2500full) {
                linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
                                 cmd->link_modes.advertising,
                                 ocp_reg_read(tp, OCP_10GBT_CTRL) & MDIO_AN_10GBT_CTRL_ADV2_5G);

                linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
                                 cmd->link_modes.lp_advertising,
                                 ocp_reg_read(tp, OCP_10GBT_STAT) & MDIO_AN_10GBT_STAT_LP2_5G);

                if (is_speed_2500(rtl8152_get_speed(tp)))
                        cmd->base.speed = SPEED_2500;
        }

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

out:
        return ret;
}

static int rtl8152_set_link_ksettings(struct net_device *dev,
                                      const struct ethtool_link_ksettings *cmd)
{
        struct r8152 *tp = netdev_priv(dev);
        u32 advertising = 0;
        int ret;

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                goto out;

        if (test_bit(ETHTOOL_LINK_MODE_10baseT_Half_BIT,
                     cmd->link_modes.advertising))
                advertising |= RTL_ADVERTISED_10_HALF;

        if (test_bit(ETHTOOL_LINK_MODE_10baseT_Full_BIT,
                     cmd->link_modes.advertising))
                advertising |= RTL_ADVERTISED_10_FULL;

        if (test_bit(ETHTOOL_LINK_MODE_100baseT_Half_BIT,
                     cmd->link_modes.advertising))
                advertising |= RTL_ADVERTISED_100_HALF;

        if (test_bit(ETHTOOL_LINK_MODE_100baseT_Full_BIT,
                     cmd->link_modes.advertising))
                advertising |= RTL_ADVERTISED_100_FULL;

        if (test_bit(ETHTOOL_LINK_MODE_1000baseT_Half_BIT,
                     cmd->link_modes.advertising))
                advertising |= RTL_ADVERTISED_1000_HALF;

        if (test_bit(ETHTOOL_LINK_MODE_1000baseT_Full_BIT,
                     cmd->link_modes.advertising))
                advertising |= RTL_ADVERTISED_1000_FULL;

        if (test_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT,
                     cmd->link_modes.advertising))
                advertising |= RTL_ADVERTISED_2500_FULL;

        mutex_lock(&tp->control);

        ret = rtl8152_set_speed(tp, cmd->base.autoneg, cmd->base.speed,
                                cmd->base.duplex, advertising);
        if (!ret) {
                tp->autoneg = cmd->base.autoneg;
                tp->speed = cmd->base.speed;
                tp->duplex = cmd->base.duplex;
                tp->advertising = advertising;
        }

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

out:
        return ret;
}

static const char rtl8152_gstrings[][ETH_GSTRING_LEN] = {
        "tx_packets",
        "rx_packets",
        "tx_errors",
        "rx_errors",
        "rx_missed",
        "align_errors",
        "tx_single_collisions",
        "tx_multi_collisions",
        "rx_unicast",
        "rx_broadcast",
        "rx_multicast",
        "tx_aborted",
        "tx_underrun",
};

static int rtl8152_get_sset_count(struct net_device *dev, int sset)
{
        switch (sset) {
        case ETH_SS_STATS:
                return ARRAY_SIZE(rtl8152_gstrings);
        default:
                return -EOPNOTSUPP;
        }
}

static void rtl8152_get_ethtool_stats(struct net_device *dev,
                                      struct ethtool_stats *stats, u64 *data)
{
        struct r8152 *tp = netdev_priv(dev);
        struct tally_counter tally;

        if (usb_autopm_get_interface(tp->intf) < 0)
                return;

        generic_ocp_read(tp, PLA_TALLYCNT, sizeof(tally), &tally, MCU_TYPE_PLA);

        usb_autopm_put_interface(tp->intf);

        data[0] = le64_to_cpu(tally.tx_packets);
        data[1] = le64_to_cpu(tally.rx_packets);
        data[2] = le64_to_cpu(tally.tx_errors);
        data[3] = le32_to_cpu(tally.rx_errors);
        data[4] = le16_to_cpu(tally.rx_missed);
        data[5] = le16_to_cpu(tally.align_errors);
        data[6] = le32_to_cpu(tally.tx_one_collision);
        data[7] = le32_to_cpu(tally.tx_multi_collision);
        data[8] = le64_to_cpu(tally.rx_unicast);
        data[9] = le64_to_cpu(tally.rx_broadcast);
        data[10] = le32_to_cpu(tally.rx_multicast);
        data[11] = le16_to_cpu(tally.tx_aborted);
        data[12] = le16_to_cpu(tally.tx_underrun);
}

static void rtl8152_get_strings(struct net_device *dev, u32 stringset, u8 *data)
{
        switch (stringset) {
        case ETH_SS_STATS:
                memcpy(data, rtl8152_gstrings, sizeof(rtl8152_gstrings));
                break;
        }
}

static int r8152_get_eee(struct r8152 *tp, struct ethtool_keee *eee)
{
        __ETHTOOL_DECLARE_LINK_MODE_MASK(common);
        u16 val;

        val = r8152_mmd_read(tp, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
        mii_eee_cap1_mod_linkmode_t(eee->supported, val);

        val = r8152_mmd_read(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
        mii_eee_cap1_mod_linkmode_t(eee->advertised, val);

        val = r8152_mmd_read(tp, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
        mii_eee_cap1_mod_linkmode_t(eee->lp_advertised, val);

        eee->eee_enabled = tp->eee_en;

        linkmode_and(common, eee->advertised, eee->lp_advertised);
        eee->eee_active = phy_check_valid(tp->speed, tp->duplex, common);

        return 0;
}

static int r8152_set_eee(struct r8152 *tp, struct ethtool_keee *eee)
{
        u16 val = linkmode_to_mii_eee_cap1_t(eee->advertised);

        tp->eee_en = eee->eee_enabled;
        tp->eee_adv = val;

        rtl_eee_enable(tp, tp->eee_en);

        return 0;
}

static int r8153_get_eee(struct r8152 *tp, struct ethtool_keee *eee)
{
        __ETHTOOL_DECLARE_LINK_MODE_MASK(common);
        u16 val;

        val = ocp_reg_read(tp, OCP_EEE_ABLE);
        mii_eee_cap1_mod_linkmode_t(eee->supported, val);

        val = ocp_reg_read(tp, OCP_EEE_ADV);
        mii_eee_cap1_mod_linkmode_t(eee->advertised, val);

        val = ocp_reg_read(tp, OCP_EEE_LPABLE);
        mii_eee_cap1_mod_linkmode_t(eee->lp_advertised, val);

        eee->eee_enabled = tp->eee_en;

        linkmode_and(common, eee->advertised, eee->lp_advertised);
        eee->eee_active = phy_check_valid(tp->speed, tp->duplex, common);

        return 0;
}

static int
rtl_ethtool_get_eee(struct net_device *net, struct ethtool_keee *edata)
{
        struct r8152 *tp = netdev_priv(net);
        int ret;

        if (!tp->rtl_ops.eee_get) {
                ret = -EOPNOTSUPP;
                goto out;
        }

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                goto out;

        mutex_lock(&tp->control);

        ret = tp->rtl_ops.eee_get(tp, edata);

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

out:
        return ret;
}

static int
rtl_ethtool_set_eee(struct net_device *net, struct ethtool_keee *edata)
{
        struct r8152 *tp = netdev_priv(net);
        int ret;

        if (!tp->rtl_ops.eee_set) {
                ret = -EOPNOTSUPP;
                goto out;
        }

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                goto out;

        mutex_lock(&tp->control);

        ret = tp->rtl_ops.eee_set(tp, edata);
        if (!ret)
                ret = mii_nway_restart(&tp->mii);

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

out:
        return ret;
}

static int rtl8152_nway_reset(struct net_device *dev)
{
        struct r8152 *tp = netdev_priv(dev);
        int ret;

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                goto out;

        mutex_lock(&tp->control);

        ret = mii_nway_restart(&tp->mii);

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

out:
        return ret;
}

static int rtl8152_get_coalesce(struct net_device *netdev,
                                struct ethtool_coalesce *coalesce,
                                struct kernel_ethtool_coalesce *kernel_coal,
                                struct netlink_ext_ack *extack)
{
        struct r8152 *tp = netdev_priv(netdev);

        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_07:
                return -EOPNOTSUPP;
        default:
                break;
        }

        coalesce->rx_coalesce_usecs = tp->coalesce;

        return 0;
}

static int rtl8152_set_coalesce(struct net_device *netdev,
                                struct ethtool_coalesce *coalesce,
                                struct kernel_ethtool_coalesce *kernel_coal,
                                struct netlink_ext_ack *extack)
{
        struct r8152 *tp = netdev_priv(netdev);
        int ret;

        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_07:
                return -EOPNOTSUPP;
        default:
                break;
        }

        if (coalesce->rx_coalesce_usecs > COALESCE_SLOW)
                return -EINVAL;

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                return ret;

        mutex_lock(&tp->control);

        if (tp->coalesce != coalesce->rx_coalesce_usecs) {
                tp->coalesce = coalesce->rx_coalesce_usecs;

                if (netif_running(netdev) && netif_carrier_ok(netdev)) {
                        netif_stop_queue(netdev);
                        napi_disable(&tp->napi);
                        tp->rtl_ops.disable(tp);
                        tp->rtl_ops.enable(tp);
                        rtl_start_rx(tp);
                        clear_bit(RTL8152_SET_RX_MODE, &tp->flags);
                        _rtl8152_set_rx_mode(netdev);
                        napi_enable(&tp->napi);
                        netif_wake_queue(netdev);
                }
        }

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

        return ret;
}

static int rtl8152_get_tunable(struct net_device *netdev,
                               const struct ethtool_tunable *tunable, void *d)
{
        struct r8152 *tp = netdev_priv(netdev);

        switch (tunable->id) {
        case ETHTOOL_RX_COPYBREAK:
                *(u32 *)d = tp->rx_copybreak;
                break;
        default:
                return -EOPNOTSUPP;
        }

        return 0;
}

static int rtl8152_set_tunable(struct net_device *netdev,
                               const struct ethtool_tunable *tunable,
                               const void *d)
{
        struct r8152 *tp = netdev_priv(netdev);
        u32 val;

        switch (tunable->id) {
        case ETHTOOL_RX_COPYBREAK:
                val = *(u32 *)d;
                if (val < ETH_ZLEN) {
                        netif_err(tp, rx_err, netdev,
                                  "Invalid rx copy break value\n");
                        return -EINVAL;
                }

                if (tp->rx_copybreak != val) {
                        if (netdev->flags & IFF_UP) {
                                mutex_lock(&tp->control);
                                napi_disable(&tp->napi);
                                tp->rx_copybreak = val;
                                napi_enable(&tp->napi);
                                mutex_unlock(&tp->control);
                        } else {
                                tp->rx_copybreak = val;
                        }
                }
                break;
        default:
                return -EOPNOTSUPP;
        }

        return 0;
}

static void rtl8152_get_ringparam(struct net_device *netdev,
                                  struct ethtool_ringparam *ring,
                                  struct kernel_ethtool_ringparam *kernel_ring,
                                  struct netlink_ext_ack *extack)
{
        struct r8152 *tp = netdev_priv(netdev);

        ring->rx_max_pending = RTL8152_RX_MAX_PENDING;
        ring->rx_pending = tp->rx_pending;
}

static int rtl8152_set_ringparam(struct net_device *netdev,
                                 struct ethtool_ringparam *ring,
                                 struct kernel_ethtool_ringparam *kernel_ring,
                                 struct netlink_ext_ack *extack)
{
        struct r8152 *tp = netdev_priv(netdev);

        if (ring->rx_pending < (RTL8152_MAX_RX * 2))
                return -EINVAL;

        if (tp->rx_pending != ring->rx_pending) {
                if (netdev->flags & IFF_UP) {
                        mutex_lock(&tp->control);
                        napi_disable(&tp->napi);
                        tp->rx_pending = ring->rx_pending;
                        napi_enable(&tp->napi);
                        mutex_unlock(&tp->control);
                } else {
                        tp->rx_pending = ring->rx_pending;
                }
        }

        return 0;
}

static void rtl8152_get_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause)
{
        struct r8152 *tp = netdev_priv(netdev);
        u16 bmcr, lcladv, rmtadv;
        u8 cap;

        if (usb_autopm_get_interface(tp->intf) < 0)
                return;

        mutex_lock(&tp->control);

        bmcr = r8152_mdio_read(tp, MII_BMCR);
        lcladv = r8152_mdio_read(tp, MII_ADVERTISE);
        rmtadv = r8152_mdio_read(tp, MII_LPA);

        mutex_unlock(&tp->control);

        usb_autopm_put_interface(tp->intf);

        if (!(bmcr & BMCR_ANENABLE)) {
                pause->autoneg = 0;
                pause->rx_pause = 0;
                pause->tx_pause = 0;
                return;
        }

        pause->autoneg = 1;

        cap = mii_resolve_flowctrl_fdx(lcladv, rmtadv);

        if (cap & FLOW_CTRL_RX)
                pause->rx_pause = 1;

        if (cap & FLOW_CTRL_TX)
                pause->tx_pause = 1;
}

static int rtl8152_set_pauseparam(struct net_device *netdev, struct ethtool_pauseparam *pause)
{
        struct r8152 *tp = netdev_priv(netdev);
        u16 old, new1;
        u8 cap = 0;
        int ret;

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                return ret;

        mutex_lock(&tp->control);

        if (pause->autoneg && !(r8152_mdio_read(tp, MII_BMCR) & BMCR_ANENABLE)) {
                ret = -EINVAL;
                goto out;
        }

        if (pause->rx_pause)
                cap |= FLOW_CTRL_RX;

        if (pause->tx_pause)
                cap |= FLOW_CTRL_TX;

        old = r8152_mdio_read(tp, MII_ADVERTISE);
        new1 = (old & ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) | mii_advertise_flowctrl(cap);
        if (old != new1)
                r8152_mdio_write(tp, MII_ADVERTISE, new1);

out:
        mutex_unlock(&tp->control);
        usb_autopm_put_interface(tp->intf);

        return ret;
}

static const struct ethtool_ops ops = {
        .supported_coalesce_params = ETHTOOL_COALESCE_USECS,
        .get_drvinfo = rtl8152_get_drvinfo,
        .get_link = ethtool_op_get_link,
        .nway_reset = rtl8152_nway_reset,
        .get_msglevel = rtl8152_get_msglevel,
        .set_msglevel = rtl8152_set_msglevel,
        .get_wol = rtl8152_get_wol,
        .set_wol = rtl8152_set_wol,
        .get_strings = rtl8152_get_strings,
        .get_sset_count = rtl8152_get_sset_count,
        .get_ethtool_stats = rtl8152_get_ethtool_stats,
        .get_coalesce = rtl8152_get_coalesce,
        .set_coalesce = rtl8152_set_coalesce,
        .get_eee = rtl_ethtool_get_eee,
        .set_eee = rtl_ethtool_set_eee,
        .get_link_ksettings = rtl8152_get_link_ksettings,
        .set_link_ksettings = rtl8152_set_link_ksettings,
        .get_tunable = rtl8152_get_tunable,
        .set_tunable = rtl8152_set_tunable,
        .get_ringparam = rtl8152_get_ringparam,
        .set_ringparam = rtl8152_set_ringparam,
        .get_pauseparam = rtl8152_get_pauseparam,
        .set_pauseparam = rtl8152_set_pauseparam,
};

static int rtl8152_ioctl(struct net_device *netdev, struct ifreq *rq, int cmd)
{
        struct r8152 *tp = netdev_priv(netdev);
        struct mii_ioctl_data *data = if_mii(rq);
        int res;

        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return -ENODEV;

        res = usb_autopm_get_interface(tp->intf);
        if (res < 0)
                goto out;

        switch (cmd) {
        case SIOCGMIIPHY:
                data->phy_id = R8152_PHY_ID; /* Internal PHY */
                break;

        case SIOCGMIIREG:
                mutex_lock(&tp->control);
                data->val_out = r8152_mdio_read(tp, data->reg_num);
                mutex_unlock(&tp->control);
                break;

        case SIOCSMIIREG:
                if (!capable(CAP_NET_ADMIN)) {
                        res = -EPERM;
                        break;
                }
                mutex_lock(&tp->control);
                r8152_mdio_write(tp, data->reg_num, data->val_in);
                mutex_unlock(&tp->control);
                break;

        default:
                res = -EOPNOTSUPP;
        }

        usb_autopm_put_interface(tp->intf);

out:
        return res;
}

static int rtl8152_change_mtu(struct net_device *dev, int new_mtu)
{
        struct r8152 *tp = netdev_priv(dev);
        int ret;

        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_07:
                WRITE_ONCE(dev->mtu, new_mtu);
                return 0;
        default:
                break;
        }

        ret = usb_autopm_get_interface(tp->intf);
        if (ret < 0)
                return ret;

        mutex_lock(&tp->control);

        WRITE_ONCE(dev->mtu, new_mtu);

        if (netif_running(dev)) {
                if (tp->rtl_ops.change_mtu)
                        tp->rtl_ops.change_mtu(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);

        usb_autopm_put_interface(tp->intf);

        return ret;
}

static const struct net_device_ops rtl8152_netdev_ops = {
        .ndo_open               = rtl8152_open,
        .ndo_stop               = rtl8152_close,
        .ndo_eth_ioctl          = rtl8152_ioctl,
        .ndo_start_xmit         = rtl8152_start_xmit,
        .ndo_tx_timeout         = rtl8152_tx_timeout,
        .ndo_set_features       = rtl8152_set_features,
        .ndo_set_rx_mode        = rtl8152_set_rx_mode,
        .ndo_set_mac_address    = rtl8152_set_mac_address,
        .ndo_change_mtu         = rtl8152_change_mtu,
        .ndo_validate_addr      = eth_validate_addr,
        .ndo_features_check     = rtl8152_features_check,
};

static void rtl8152_unload(struct r8152 *tp)
{
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        if (tp->version != RTL_VER_01)
                r8152_power_cut_en(tp, true);
}

static void rtl8153_unload(struct r8152 *tp)
{
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153_power_cut_en(tp, false);
}

static void rtl8153b_unload(struct r8152 *tp)
{
        if (test_bit(RTL8152_INACCESSIBLE, &tp->flags))
                return;

        r8153b_power_cut_en(tp, false);
}

static int rtl_ops_init(struct r8152 *tp)
{
        struct rtl_ops *ops = &tp->rtl_ops;
        int ret = 0;

        switch (tp->version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_07:
                ops->init               = r8152b_init;
                ops->enable             = rtl8152_enable;
                ops->disable            = rtl8152_disable;
                ops->up                 = rtl8152_up;
                ops->down               = rtl8152_down;
                ops->unload             = rtl8152_unload;
                ops->eee_get            = r8152_get_eee;
                ops->eee_set            = r8152_set_eee;
                ops->in_nway            = rtl8152_in_nway;
                ops->hw_phy_cfg         = r8152b_hw_phy_cfg;
                ops->autosuspend_en     = rtl_runtime_suspend_enable;
                tp->rx_buf_sz           = 16 * 1024;
                tp->eee_en              = true;
                tp->eee_adv             = MDIO_EEE_100TX;
                break;

        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
                ops->init               = r8153_init;
                ops->enable             = rtl8153_enable;
                ops->disable            = rtl8153_disable;
                ops->up                 = rtl8153_up;
                ops->down               = rtl8153_down;
                ops->unload             = rtl8153_unload;
                ops->eee_get            = r8153_get_eee;
                ops->eee_set            = r8152_set_eee;
                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
                        tp->rx_buf_sz   = 32 * 1024;
                tp->eee_en              = true;
                tp->eee_adv             = MDIO_EEE_1000T | MDIO_EEE_100TX;
                break;

        case RTL_VER_08:
        case RTL_VER_09:
                ops->init               = r8153b_init;
                ops->enable             = rtl8153_enable;
                ops->disable            = rtl8153_disable;
                ops->up                 = rtl8153b_up;
                ops->down               = rtl8153b_down;
                ops->unload             = rtl8153b_unload;
                ops->eee_get            = r8153_get_eee;
                ops->eee_set            = r8152_set_eee;
                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;
                break;

        case RTL_VER_11:
                tp->eee_en              = true;
                tp->eee_adv             = MDIO_EEE_1000T | MDIO_EEE_100TX;
                fallthrough;
        case RTL_VER_10:
                ops->init               = r8156_init;
                ops->enable             = rtl8156_enable;
                ops->disable            = rtl8156_disable;
                ops->up                 = rtl8156_up;
                ops->down               = rtl8156_down;
                ops->unload             = rtl8153_unload;
                ops->eee_get            = r8153_get_eee;
                ops->eee_set            = r8152_set_eee;
                ops->in_nway            = rtl8153_in_nway;
                ops->hw_phy_cfg         = r8156_hw_phy_cfg;
                ops->autosuspend_en     = rtl8156_runtime_enable;
                ops->change_mtu         = rtl8156_change_mtu;
                tp->rx_buf_sz           = 48 * 1024;
                tp->support_2500full    = 1;
                break;

        case RTL_VER_12:
        case RTL_VER_13:
                tp->support_2500full    = 1;
                fallthrough;
        case RTL_VER_15:
                tp->eee_en              = true;
                tp->eee_adv             = MDIO_EEE_1000T | MDIO_EEE_100TX;
                ops->init               = r8156b_init;
                ops->enable             = rtl8156b_enable;
                ops->disable            = rtl8153_disable;
                ops->up                 = rtl8156_up;
                ops->down               = rtl8156_down;
                ops->unload             = rtl8153_unload;
                ops->eee_get            = r8153_get_eee;
                ops->eee_set            = r8152_set_eee;
                ops->in_nway            = rtl8153_in_nway;
                ops->hw_phy_cfg         = r8156b_hw_phy_cfg;
                ops->autosuspend_en     = rtl8156_runtime_enable;
                ops->change_mtu         = rtl8156_change_mtu;
                tp->rx_buf_sz           = 48 * 1024;
                break;

        case RTL_VER_14:
                ops->init               = r8153c_init;
                ops->enable             = rtl8153_enable;
                ops->disable            = rtl8153_disable;
                ops->up                 = rtl8153c_up;
                ops->down               = rtl8153b_down;
                ops->unload             = rtl8153_unload;
                ops->eee_get            = r8153_get_eee;
                ops->eee_set            = r8152_set_eee;
                ops->in_nway            = rtl8153_in_nway;
                ops->hw_phy_cfg         = r8153c_hw_phy_cfg;
                ops->autosuspend_en     = rtl8153c_runtime_enable;
                ops->change_mtu         = rtl8153c_change_mtu;
                tp->rx_buf_sz           = 32 * 1024;
                tp->eee_en              = true;
                tp->eee_adv             = MDIO_EEE_1000T | MDIO_EEE_100TX;
                break;

        default:
                ret = -ENODEV;
                dev_err(&tp->intf->dev, "Unknown Device\n");
                break;
        }

        return ret;
}

#define FIRMWARE_8153A_2        "rtl_nic/rtl8153a-2.fw"
#define FIRMWARE_8153A_3        "rtl_nic/rtl8153a-3.fw"
#define FIRMWARE_8153A_4        "rtl_nic/rtl8153a-4.fw"
#define FIRMWARE_8153B_2        "rtl_nic/rtl8153b-2.fw"
#define FIRMWARE_8153C_1        "rtl_nic/rtl8153c-1.fw"
#define FIRMWARE_8156A_2        "rtl_nic/rtl8156a-2.fw"
#define FIRMWARE_8156B_2        "rtl_nic/rtl8156b-2.fw"

MODULE_FIRMWARE(FIRMWARE_8153A_2);
MODULE_FIRMWARE(FIRMWARE_8153A_3);
MODULE_FIRMWARE(FIRMWARE_8153A_4);
MODULE_FIRMWARE(FIRMWARE_8153B_2);
MODULE_FIRMWARE(FIRMWARE_8153C_1);
MODULE_FIRMWARE(FIRMWARE_8156A_2);
MODULE_FIRMWARE(FIRMWARE_8156B_2);

static int rtl_fw_init(struct r8152 *tp)
{
        struct rtl_fw *rtl_fw = &tp->rtl_fw;

        switch (tp->version) {
        case RTL_VER_04:
                rtl_fw->fw_name         = FIRMWARE_8153A_2;
                rtl_fw->pre_fw          = r8153_pre_firmware_1;
                rtl_fw->post_fw         = r8153_post_firmware_1;
                break;
        case RTL_VER_05:
                rtl_fw->fw_name         = FIRMWARE_8153A_3;
                rtl_fw->pre_fw          = r8153_pre_firmware_2;
                rtl_fw->post_fw         = r8153_post_firmware_2;
                break;
        case RTL_VER_06:
                rtl_fw->fw_name         = FIRMWARE_8153A_4;
                rtl_fw->post_fw         = r8153_post_firmware_3;
                break;
        case RTL_VER_09:
                rtl_fw->fw_name         = FIRMWARE_8153B_2;
                rtl_fw->pre_fw          = r8153b_pre_firmware_1;
                rtl_fw->post_fw         = r8153b_post_firmware_1;
                break;
        case RTL_VER_11:
                rtl_fw->fw_name         = FIRMWARE_8156A_2;
                rtl_fw->post_fw         = r8156a_post_firmware_1;
                break;
        case RTL_VER_13:
        case RTL_VER_15:
                rtl_fw->fw_name         = FIRMWARE_8156B_2;
                break;
        case RTL_VER_14:
                rtl_fw->fw_name         = FIRMWARE_8153C_1;
                rtl_fw->pre_fw          = r8153b_pre_firmware_1;
                rtl_fw->post_fw         = r8153c_post_firmware_1;
                break;
        default:
                break;
        }

        return 0;
}

static u8 __rtl_get_hw_ver(struct usb_device *udev)
{
        u32 ocp_data = 0;
        __le32 *tmp;
        u8 version;
        int ret;
        int i;

        tmp = kmalloc(sizeof(*tmp), GFP_KERNEL);
        if (!tmp)
                return 0;

        /* Retry up to 3 times in case there is a transitory error. We do this
         * since retrying a read of the version is always safe and this
         * function doesn't take advantage of r8152_control_msg().
         */
        for (i = 0; i < 3; i++) {
                ret = usb_control_msg(udev, usb_rcvctrlpipe(udev, 0),
                                      RTL8152_REQ_GET_REGS, RTL8152_REQT_READ,
                                      PLA_TCR0, MCU_TYPE_PLA, tmp, sizeof(*tmp),
                                      USB_CTRL_GET_TIMEOUT);
                if (ret > 0) {
                        ocp_data = (__le32_to_cpu(*tmp) >> 16) & VERSION_MASK;
                        break;
                }
        }

        if (i != 0 && ret > 0)
                dev_warn(&udev->dev, "Needed %d retries to read version\n", i);

        kfree(tmp);

        switch (ocp_data) {
        case 0x4c00:
                version = RTL_VER_01;
                break;
        case 0x4c10:
                version = RTL_VER_02;
                break;
        case 0x5c00:
                version = RTL_VER_03;
                break;
        case 0x5c10:
                version = RTL_VER_04;
                break;
        case 0x5c20:
                version = RTL_VER_05;
                break;
        case 0x5c30:
                version = RTL_VER_06;
                break;
        case 0x4800:
                version = RTL_VER_07;
                break;
        case 0x6000:
                version = RTL_VER_08;
                break;
        case 0x6010:
                version = RTL_VER_09;
                break;
        case 0x7010:
                version = RTL_TEST_01;
                break;
        case 0x7020:
                version = RTL_VER_10;
                break;
        case 0x7030:
                version = RTL_VER_11;
                break;
        case 0x7400:
                version = RTL_VER_12;
                break;
        case 0x7410:
                version = RTL_VER_13;
                break;
        case 0x6400:
                version = RTL_VER_14;
                break;
        case 0x7420:
                version = RTL_VER_15;
                break;
        default:
                version = RTL_VER_UNKNOWN;
                dev_info(&udev->dev, "Unknown version 0x%04x\n", ocp_data);
                break;
        }

        return version;
}

u8 rtl8152_get_version(struct usb_interface *intf)
{
        u8 version;

        version = __rtl_get_hw_ver(interface_to_usbdev(intf));

        dev_dbg(&intf->dev, "Detected version 0x%04x\n", version);

        return version;
}
EXPORT_SYMBOL_GPL(rtl8152_get_version);

static bool rtl8152_supports_lenovo_macpassthru(struct usb_device *udev)
{
        int parent_vendor_id = le16_to_cpu(udev->parent->descriptor.idVendor);
        int product_id = le16_to_cpu(udev->descriptor.idProduct);
        int vendor_id = le16_to_cpu(udev->descriptor.idVendor);

        if (vendor_id == VENDOR_ID_LENOVO) {
                switch (product_id) {
                case DEVICE_ID_LENOVO_USB_C_TRAVEL_HUB:
                case DEVICE_ID_THINKPAD_ONELINK_PLUS_DOCK:
                case DEVICE_ID_THINKPAD_THUNDERBOLT3_DOCK_GEN2:
                case DEVICE_ID_THINKPAD_USB_C_DOCK_GEN2:
                case DEVICE_ID_THINKPAD_USB_C_DOCK_GEN3:
                case DEVICE_ID_THINKPAD_USB_C_DONGLE:
                        return 1;
                }
        } else if (vendor_id == VENDOR_ID_REALTEK && parent_vendor_id == VENDOR_ID_LENOVO) {
                switch (product_id) {
                case 0x8153:
                        return 1;
                }
        }
        return 0;
}

static int rtl8152_probe_once(struct usb_interface *intf,
                              const struct usb_device_id *id, u8 version)
{
        struct usb_device *udev = interface_to_usbdev(intf);
        struct r8152 *tp;
        struct net_device *netdev;
        int ret;

        usb_reset_device(udev);
        netdev = alloc_etherdev(sizeof(struct r8152));
        if (!netdev) {
                dev_err(&intf->dev, "Out of memory\n");
                return -ENOMEM;
        }

        SET_NETDEV_DEV(netdev, &intf->dev);
        tp = netdev_priv(netdev);
        tp->msg_enable = 0x7FFF;

        tp->udev = udev;
        tp->netdev = netdev;
        tp->intf = intf;
        tp->version = version;

        tp->pipe_ctrl_in = usb_rcvctrlpipe(udev, 0);
        tp->pipe_ctrl_out = usb_sndctrlpipe(udev, 0);
        tp->pipe_in = usb_rcvbulkpipe(udev, 1);
        tp->pipe_out = usb_sndbulkpipe(udev, 2);
        tp->pipe_intr = usb_rcvintpipe(udev, 3);

        switch (version) {
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_07:
                tp->mii.supports_gmii = 0;
                break;
        default:
                tp->mii.supports_gmii = 1;
                break;
        }

        ret = rtl_ops_init(tp);
        if (ret)
                goto out;

        rtl_fw_init(tp);

        mutex_init(&tp->control);
        INIT_DELAYED_WORK(&tp->schedule, rtl_work_func_t);
        INIT_DELAYED_WORK(&tp->hw_phy_work, rtl_hw_phy_work_func_t);
        tasklet_setup(&tp->tx_tl, bottom_half);
        tasklet_disable(&tp->tx_tl);

        netdev->netdev_ops = &rtl8152_netdev_ops;
        netdev->watchdog_timeo = RTL8152_TX_TIMEOUT;

        netdev->features |= NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_SG |
                            NETIF_F_TSO | NETIF_F_FRAGLIST | NETIF_F_IPV6_CSUM |
                            NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_RX |
                            NETIF_F_HW_VLAN_CTAG_TX;
        netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_SG |
                              NETIF_F_TSO | NETIF_F_FRAGLIST |
                              NETIF_F_IPV6_CSUM | NETIF_F_TSO6 |
                              NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX;
        netdev->vlan_features = NETIF_F_SG | NETIF_F_IP_CSUM | NETIF_F_TSO |
                                NETIF_F_HIGHDMA | NETIF_F_FRAGLIST |
                                NETIF_F_IPV6_CSUM | NETIF_F_TSO6;

        if (tp->version == RTL_VER_01) {
                netdev->features &= ~NETIF_F_RXCSUM;
                netdev->hw_features &= ~NETIF_F_RXCSUM;
        }

        tp->lenovo_macpassthru = rtl8152_supports_lenovo_macpassthru(udev);

        if (le16_to_cpu(udev->descriptor.bcdDevice) == 0x3011 && udev->serial &&
            (!strcmp(udev->serial, "000001000000") ||
             !strcmp(udev->serial, "000002000000"))) {
                dev_info(&udev->dev, "Dell TB16 Dock, disable RX aggregation");
                tp->dell_tb_rx_agg_bug = 1;
        }

        netdev->ethtool_ops = &ops;
        netif_set_tso_max_size(netdev, RTL_LIMITED_TSO_SIZE);

        /* MTU range: 68 - 1500 or 9194 */
        netdev->min_mtu = ETH_MIN_MTU;
        switch (tp->version) {
        case RTL_VER_03:
        case RTL_VER_04:
        case RTL_VER_05:
        case RTL_VER_06:
        case RTL_VER_08:
        case RTL_VER_09:
        case RTL_VER_14:
                netdev->max_mtu = size_to_mtu(9 * 1024);
                break;
        case RTL_VER_10:
        case RTL_VER_11:
                netdev->max_mtu = size_to_mtu(15 * 1024);
                break;
        case RTL_VER_12:
        case RTL_VER_13:
        case RTL_VER_15:
                netdev->max_mtu = size_to_mtu(16 * 1024);
                break;
        case RTL_VER_01:
        case RTL_VER_02:
        case RTL_VER_07:
        default:
                netdev->max_mtu = ETH_DATA_LEN;
                break;
        }

        tp->mii.dev = netdev;
        tp->mii.mdio_read = read_mii_word;
        tp->mii.mdio_write = write_mii_word;
        tp->mii.phy_id_mask = 0x3f;
        tp->mii.reg_num_mask = 0x1f;
        tp->mii.phy_id = R8152_PHY_ID;

        tp->autoneg = AUTONEG_ENABLE;
        tp->speed = SPEED_100;
        tp->advertising = RTL_ADVERTISED_10_HALF | RTL_ADVERTISED_10_FULL |
                          RTL_ADVERTISED_100_HALF | RTL_ADVERTISED_100_FULL;
        if (tp->mii.supports_gmii) {
                if (tp->support_2500full &&
                    tp->udev->speed >= USB_SPEED_SUPER) {
                        tp->speed = SPEED_2500;
                        tp->advertising |= RTL_ADVERTISED_2500_FULL;
                } else {
                        tp->speed = SPEED_1000;
                }
                tp->advertising |= RTL_ADVERTISED_1000_FULL;
        }
        tp->duplex = DUPLEX_FULL;

        tp->rx_copybreak = RTL8152_RXFG_HEADSZ;
        tp->rx_pending = 10 * RTL8152_MAX_RX;

        intf->needs_remote_wakeup = 1;

        if (!rtl_can_wakeup(tp))
                __rtl_set_wol(tp, 0);
        else
                tp->saved_wolopts = __rtl_get_wol(tp);

        tp->rtl_ops.init(tp);
#if IS_BUILTIN(CONFIG_USB_RTL8152)
        /* Retry in case request_firmware() is not ready yet. */
        tp->rtl_fw.retry = true;
#endif
        queue_delayed_work(system_long_wq, &tp->hw_phy_work, 0);
        set_ethernet_addr(tp, false);

        usb_set_intfdata(intf, tp);

        netif_napi_add(netdev, &tp->napi, r8152_poll);

        ret = register_netdev(netdev);
        if (ret != 0) {
                dev_err(&intf->dev, "couldn't register the device\n");
                goto out1;
        }

        if (tp->saved_wolopts)
                device_set_wakeup_enable(&udev->dev, true);
        else
                device_set_wakeup_enable(&udev->dev, false);

        /* If we saw a control transfer error while probing then we may
         * want to try probe() again. Consider this an error.
         */
        if (test_bit(PROBE_SHOULD_RETRY, &tp->flags))
                goto out2;

        set_bit(PROBED_WITH_NO_ERRORS, &tp->flags);
        netif_info(tp, probe, netdev, "%s\n", DRIVER_VERSION);

        return 0;

out2:
        unregister_netdev(netdev);

out1:
        tasklet_kill(&tp->tx_tl);
        cancel_delayed_work_sync(&tp->hw_phy_work);
        if (tp->rtl_ops.unload)
                tp->rtl_ops.unload(tp);
        rtl8152_release_firmware(tp);
        usb_set_intfdata(intf, NULL);
out:
        if (test_bit(PROBE_SHOULD_RETRY, &tp->flags))
                ret = -EAGAIN;

        free_netdev(netdev);
        return ret;
}

#define RTL8152_PROBE_TRIES     3

static int rtl8152_probe(struct usb_interface *intf,
                         const struct usb_device_id *id)
{
        u8 version;
        int ret;
        int i;

        if (intf->cur_altsetting->desc.bInterfaceClass != USB_CLASS_VENDOR_SPEC)
                return -ENODEV;

        if (!rtl_check_vendor_ok(intf))
                return -ENODEV;

        version = rtl8152_get_version(intf);
        if (version == RTL_VER_UNKNOWN)
                return -ENODEV;

        for (i = 0; i < RTL8152_PROBE_TRIES; i++) {
                ret = rtl8152_probe_once(intf, id, version);
                if (ret != -EAGAIN)
                        break;
        }
        if (ret == -EAGAIN) {
                dev_err(&intf->dev,
                        "r8152 failed probe after %d tries; giving up\n", i);
                return -ENODEV;
        }

        return ret;
}

static void rtl8152_disconnect(struct usb_interface *intf)
{
        struct r8152 *tp = usb_get_intfdata(intf);

        usb_set_intfdata(intf, NULL);
        if (tp) {
                rtl_set_unplug(tp);

                unregister_netdev(tp->netdev);
                tasklet_kill(&tp->tx_tl);
                cancel_delayed_work_sync(&tp->hw_phy_work);
                if (tp->rtl_ops.unload)
                        tp->rtl_ops.unload(tp);
                rtl8152_release_firmware(tp);
                free_netdev(tp->netdev);
        }
}

/* table of devices that work with this driver */
static const struct usb_device_id rtl8152_table[] = {
        /* Realtek */
        { USB_DEVICE(VENDOR_ID_REALTEK, 0x8050) },
        { USB_DEVICE(VENDOR_ID_REALTEK, 0x8053) },
        { USB_DEVICE(VENDOR_ID_REALTEK, 0x8152) },
        { USB_DEVICE(VENDOR_ID_REALTEK, 0x8153) },
        { USB_DEVICE(VENDOR_ID_REALTEK, 0x8155) },
        { USB_DEVICE(VENDOR_ID_REALTEK, 0x8156) },

        /* Microsoft */
        { USB_DEVICE(VENDOR_ID_MICROSOFT, 0x07ab) },
        { USB_DEVICE(VENDOR_ID_MICROSOFT, 0x07c6) },
        { USB_DEVICE(VENDOR_ID_MICROSOFT, 0x0927) },
        { USB_DEVICE(VENDOR_ID_MICROSOFT, 0x0c5e) },
        { USB_DEVICE(VENDOR_ID_SAMSUNG, 0xa101) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x304f) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x3054) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x3062) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x3069) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x3082) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x3098) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x7205) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x720c) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x7214) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0x721e) },
        { USB_DEVICE(VENDOR_ID_LENOVO,  0xa387) },
        { USB_DEVICE(VENDOR_ID_LINKSYS, 0x0041) },
        { USB_DEVICE(VENDOR_ID_NVIDIA,  0x09ff) },
        { USB_DEVICE(VENDOR_ID_TPLINK,  0x0601) },
        { USB_DEVICE(VENDOR_ID_DLINK,   0xb301) },
        { USB_DEVICE(VENDOR_ID_ASUS,    0x1976) },
        {}
};

MODULE_DEVICE_TABLE(usb, rtl8152_table);

static struct usb_driver rtl8152_driver = {
        .name =         MODULENAME,
        .id_table =     rtl8152_table,
        .probe =        rtl8152_probe,
        .disconnect =   rtl8152_disconnect,
        .suspend =      rtl8152_suspend,
        .resume =       rtl8152_resume,
        .reset_resume = rtl8152_reset_resume,
        .pre_reset =    rtl8152_pre_reset,
        .post_reset =   rtl8152_post_reset,
        .supports_autosuspend = 1,
        .disable_hub_initiated_lpm = 1,
};

static int rtl8152_cfgselector_choose_configuration(struct usb_device *udev)
{
        struct usb_host_config *c;
        int i, num_configs;

        /* Switch the device to vendor mode, if and only if the vendor mode
         * driver supports it.
         */
        if (__rtl_get_hw_ver(udev) == RTL_VER_UNKNOWN)
                return -ENODEV;

        /* The vendor mode is not always config #1, so to find it out. */
        c = udev->config;
        num_configs = udev->descriptor.bNumConfigurations;
        for (i = 0; i < num_configs; (i++, c++)) {
                struct usb_interface_descriptor *desc = NULL;

                if (!c->desc.bNumInterfaces)
                        continue;
                desc = &c->intf_cache[0]->altsetting->desc;
                if (desc->bInterfaceClass == USB_CLASS_VENDOR_SPEC)
                        break;
        }

        if (i == num_configs)
                return -ENODEV;

        return c->desc.bConfigurationValue;
}

static struct usb_device_driver rtl8152_cfgselector_driver = {
        .name = MODULENAME "-cfgselector",
        .choose_configuration = rtl8152_cfgselector_choose_configuration,
        .id_table = rtl8152_table,
        .generic_subclass = 1,
        .supports_autosuspend = 1,
};

static int __init rtl8152_driver_init(void)
{
        int ret;

        ret = usb_register_device_driver(&rtl8152_cfgselector_driver, THIS_MODULE);
        if (ret)
                return ret;
        return usb_register(&rtl8152_driver);
}

static void __exit rtl8152_driver_exit(void)
{
        usb_deregister(&rtl8152_driver);
        usb_deregister_device_driver(&rtl8152_cfgselector_driver);
}

module_init(rtl8152_driver_init);
module_exit(rtl8152_driver_exit);

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
MODULE_VERSION(DRIVER_VERSION);