r8152.c 103.5 KB
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/*
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 *  Copyright (c) 2014 Realtek Semiconductor Corp. All rights reserved.
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 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * version 2 as published by the Free Software Foundation.
 *
 */

#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/usb.h>
#include <linux/crc32.h>
#include <linux/if_vlan.h>
#include <linux/uaccess.h>
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#include <linux/list.h>
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#include <linux/ip.h>
#include <linux/ipv6.h>
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#include <net/ip6_checksum.h>
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#include <uapi/linux/mdio.h>
#include <linux/mdio.h>
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#include <linux/usb/cdc.h>
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#include <linux/suspend.h>
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#include <linux/acpi.h>
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/* Information for net-next */
#define NETNEXT_VERSION		"08"

/* Information for net */
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#define NET_VERSION		"8"
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#define DRIVER_VERSION		"v1." NETNEXT_VERSION "." NET_VERSION
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#define DRIVER_AUTHOR "Realtek linux nic maintainers <nic_swsd@realtek.com>"
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#define DRIVER_DESC "Realtek RTL8152/RTL8153 Based USB Ethernet Adapters"
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#define MODULENAME "r8152"

#define R8152_PHY_ID		32

#define PLA_IDR			0xc000
#define PLA_RCR			0xc010
#define PLA_RMS			0xc016
#define PLA_RXFIFO_CTRL0	0xc0a0
#define PLA_RXFIFO_CTRL1	0xc0a4
#define PLA_RXFIFO_CTRL2	0xc0a8
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#define PLA_DMY_REG0		0xc0b0
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#define PLA_FMC			0xc0b4
#define PLA_CFG_WOL		0xc0b6
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#define PLA_TEREDO_CFG		0xc0bc
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#define PLA_MAR			0xcd00
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#define PLA_BACKUP		0xd000
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#define PAL_BDC_CR		0xd1a0
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#define PLA_TEREDO_TIMER	0xd2cc
#define PLA_REALWOW_TIMER	0xd2e8
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#define PLA_LEDSEL		0xdd90
#define PLA_LED_FEATURE		0xdd92
#define PLA_PHYAR		0xde00
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#define PLA_BOOT_CTRL		0xe004
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#define PLA_GPHY_INTR_IMR	0xe022
#define PLA_EEE_CR		0xe040
#define PLA_EEEP_CR		0xe080
#define PLA_MAC_PWR_CTRL	0xe0c0
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#define PLA_MAC_PWR_CTRL2	0xe0ca
#define PLA_MAC_PWR_CTRL3	0xe0cc
#define PLA_MAC_PWR_CTRL4	0xe0ce
#define PLA_WDT6_CTRL		0xe428
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#define PLA_TCR0		0xe610
#define PLA_TCR1		0xe612
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#define PLA_MTPS		0xe615
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#define PLA_TXFIFO_CTRL		0xe618
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#define PLA_RSTTALLY		0xe800
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#define PLA_CR			0xe813
#define PLA_CRWECR		0xe81c
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#define PLA_CONFIG12		0xe81e	/* CONFIG1, CONFIG2 */
#define PLA_CONFIG34		0xe820	/* CONFIG3, CONFIG4 */
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#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
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#define PLA_TALLYCNT		0xe890
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#define PLA_SFF_STS_7		0xe8de
#define PLA_PHYSTATUS		0xe908
#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
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#define PLA_BP_EN		0xfc38
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#define USB_USB2PHY		0xb41e
#define USB_SSPHYLINK2		0xb428
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#define USB_U2P3_CTRL		0xb460
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#define USB_CSR_DUMMY1		0xb464
#define USB_CSR_DUMMY2		0xb466
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#define USB_DEV_STAT		0xb808
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#define USB_CONNECT_TIMER	0xcbf8
#define USB_BURST_SIZE		0xcfc0
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#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
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#define USB_RX_EARLY_TIMEOUT	0xd42c
#define USB_RX_EARLY_SIZE	0xd42e
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#define USB_PM_CTRL_STATUS	0xd432
#define USB_TX_DMA		0xd434
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#define USB_TOLERANCE		0xd490
#define USB_LPM_CTRL		0xd41a
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#define USB_BMU_RESET		0xd4b0
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#define USB_UPS_CTRL		0xd800
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#define USB_MISC_0		0xd81a
#define USB_POWER_CUT		0xd80a
#define USB_AFE_CTRL2		0xd824
#define USB_WDT11_CTRL		0xe43c
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#define USB_BP_BA		0xfc26
#define USB_BP_0		0xfc28
#define USB_BP_1		0xfc2a
#define USB_BP_2		0xfc2c
#define USB_BP_3		0xfc2e
#define USB_BP_4		0xfc30
#define USB_BP_5		0xfc32
#define USB_BP_6		0xfc34
#define USB_BP_7		0xfc36
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#define USB_BP_EN		0xfc38
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/* OCP Registers */
#define OCP_ALDPS_CONFIG	0x2010
#define OCP_EEE_CONFIG1		0x2080
#define OCP_EEE_CONFIG2		0x2092
#define OCP_EEE_CONFIG3		0x2094
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#define OCP_BASE_MII		0xa400
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#define OCP_EEE_AR		0xa41a
#define OCP_EEE_DATA		0xa41c
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#define OCP_PHY_STATUS		0xa420
#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
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#define OCP_EEE_ABLE		0xa5c4
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#define OCP_EEE_ADV		0xa5d0
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#define OCP_EEE_LPABLE		0xa5d2
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#define OCP_PHY_STATE		0xa708		/* nway state for 8153 */
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#define OCP_ADC_CFG		0xbc06

/* SRAM Register */
#define SRAM_LPF_CFG		0x8012
#define SRAM_10M_AMP1		0x8080
#define SRAM_10M_AMP2		0x8082
#define SRAM_IMPEDANCE		0x8084
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/* 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)

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

/* PLA_RXFIFO_CTRL1 */
#define RXFIFO_THR2_FULL	0x00000060
#define RXFIFO_THR2_HIGH	0x00000038
#define RXFIFO_THR2_OOB		0x0000004a
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#define RXFIFO_THR2_NORMAL	0x00a0
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/* PLA_RXFIFO_CTRL2 */
#define RXFIFO_THR3_FULL	0x00000078
#define RXFIFO_THR3_HIGH	0x00000048
#define RXFIFO_THR3_OOB		0x0000005a
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#define RXFIFO_THR3_NORMAL	0x0110
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/* PLA_TXFIFO_CTRL */
#define TXFIFO_THR_NORMAL	0x00400008
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#define TXFIFO_THR_NORMAL2	0x01000008
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/* PLA_DMY_REG0 */
#define ECM_ALDPS		0x0002

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/* PLA_FMC */
#define FMC_FCR_MCU_EN		0x0001

/* PLA_EEEP_CR */
#define EEEP_CR_EEEP_TX		0x0002

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/* PLA_WDT6_CTRL */
#define WDT6_SET_MODE		0x0010

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

/* PLA_TCR1 */
#define VERSION_MASK		0x7cf0

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

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/* PLA_RSTTALLY */
#define TALLY_RESET		0x0001

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/* 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 CPCR_RX_VLAN		0x0040

/* PLA_CFG_WOL */
#define MAGIC_EN		0x0001

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

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/* PAL_BDC_CR */
#define ALDPS_PROXY_MODE	0x0001

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

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

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

/* PLA_MAC_PWR_CTRL2 */
#define EEE_SPDWN_RATIO		0x8007

/* PLA_MAC_PWR_CTRL3 */
#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 TP100_SPDWN_EN		0x0020
#define TP500_SPDWN_EN		0x0010
#define TP1000_SPDWN_EN		0x0008
#define EEE_SPDWN_EN		0x0001
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/* 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

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/* PLA_BOOT_CTRL */
#define AUTOLOAD_DONE		0x0002

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

/* 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

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/* USB_DEV_STAT */
#define STAT_SPEED_MASK		0x0006
#define STAT_SPEED_HIGH		0x0000
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#define STAT_SPEED_FULL		0x0002
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/* USB_TX_AGG */
#define TX_AGG_MAX_THRESHOLD	0x03

/* USB_RX_BUF_TH */
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#define RX_THR_SUPPER		0x0c350180
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#define RX_THR_HIGH		0x7a120180
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#define RX_THR_SLOW		0xffff0180
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/* USB_TX_DMA */
#define TEST_MODE_DISABLE	0x00000001
#define TX_SIZE_ADJUST1		0x00000100

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

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/* USB_UPS_CTRL */
#define POWER_CUT		0x0100

/* USB_PM_CTRL_STATUS */
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#define RESUME_INDICATE		0x0001
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/* USB_USB_CTRL */
#define RX_AGG_DISABLE		0x0010
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#define RX_ZERO_EN		0x0080
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/* USB_U2P3_CTRL */
#define U2P3_ENABLE		0x0001

/* USB_POWER_CUT */
#define PWR_EN			0x0001
#define PHASE2_EN		0x0008

/* USB_MISC_0 */
#define PCUT_STATUS		0x0001

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/* USB_RX_EARLY_TIMEOUT */
#define COALESCE_SUPER		 85000U
#define COALESCE_HIGH		250000U
#define COALESCE_SLOW		524280U
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/* USB_WDT11_CTRL */
#define TIMER11_EN		0x0001

/* USB_LPM_CTRL */
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/* bit 4 ~ 5: fifo empty boundary */
#define FIFO_EMPTY_1FB		0x30	/* 0x1fb * 64 = 32448 bytes */
/* bit 2 ~ 3: LMP timer */
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#define LPM_TIMER_MASK		0x0c
#define LPM_TIMER_500MS		0x04	/* 500 ms */
#define LPM_TIMER_500US		0x0c	/* 500 us */
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#define ROK_EXIT_LPM		0x02
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/* USB_AFE_CTRL2 */
#define SEN_VAL_MASK		0xf800
#define SEN_VAL_NORMAL		0xa000
#define SEL_RXIDLE		0x0100

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

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

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

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/* 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
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#define sd_rise_time_mask	0x0070
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#define sd_rise_time(x)		(min(x, 7) << 4)	/* bit 4 ~ 6 */
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#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 */
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#define fast_snr_mask		0xff80
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#define fast_snr(x)		(min(x, 0x1ff) << 7)	/* bit 7 ~ 15 */
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#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 */

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

/* OCP_DOWN_SPEED */
#define EN_10M_BGOFF		0x0080

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

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

/* 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

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/* MAC PASSTHRU */
#define AD_MASK			0xfee0
#define EFUSE			0xcfdb
#define PASS_THRU_MASK		0x1

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enum rtl_register_content {
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	_1000bps	= 0x10,
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	_100bps		= 0x08,
	_10bps		= 0x04,
	LINK_STATUS	= 0x02,
	FULL_DUP	= 0x01,
};

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#define RTL8152_MAX_TX		4
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#define RTL8152_MAX_RX		10
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#define INTBUFSIZE		2
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#define CRC_SIZE		4
#define TX_ALIGN		4
#define RX_ALIGN		8
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#define INTR_LINK		0x0004
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#define RTL8152_REQT_READ	0xc0
#define RTL8152_REQT_WRITE	0x40
#define RTL8152_REQ_GET_REGS	0x05
#define RTL8152_REQ_SET_REGS	0x05

#define BYTE_EN_DWORD		0xff
#define BYTE_EN_WORD		0x33
#define BYTE_EN_BYTE		0x11
#define BYTE_EN_SIX_BYTES	0x3f
#define BYTE_EN_START_MASK	0x0f
#define BYTE_EN_END_MASK	0xf0

498 499
#define RTL8153_MAX_PACKET	9216 /* 9K */
#define RTL8153_MAX_MTU		(RTL8153_MAX_PACKET - VLAN_ETH_HLEN - VLAN_HLEN)
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#define RTL8152_RMS		(VLAN_ETH_FRAME_LEN + VLAN_HLEN)
501
#define RTL8153_RMS		RTL8153_MAX_PACKET
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#define RTL8152_TX_TIMEOUT	(5 * HZ)
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#define RTL8152_NAPI_WEIGHT	64
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/* rtl8152 flags */
enum rtl8152_flags {
	RTL8152_UNPLUG = 0,
	RTL8152_SET_RX_MODE,
509 510
	WORK_ENABLE,
	RTL8152_LINK_CHG,
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	SELECTIVE_SUSPEND,
512
	PHY_RESET,
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	SCHEDULE_NAPI,
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};

/* Define these values to match your device */
#define VENDOR_ID_REALTEK		0x0bda
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#define VENDOR_ID_SAMSUNG		0x04e8
519
#define VENDOR_ID_LENOVO		0x17ef
520
#define VENDOR_ID_NVIDIA		0x0955
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#define MCU_TYPE_PLA			0x0100
#define MCU_TYPE_USB			0x0000

525 526 527 528 529 530 531 532 533 534 535 536 537
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;
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	__le16	tx_underrun;
539 540
};

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struct rx_desc {
542
	__le32 opts1;
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#define RX_LEN_MASK			0x7fff
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545
	__le32 opts2;
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#define RD_UDP_CS			BIT(23)
#define RD_TCP_CS			BIT(22)
#define RD_IPV6_CS			BIT(20)
#define RD_IPV4_CS			BIT(19)
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551
	__le32 opts3;
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#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)
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557 558 559
	__le32 opts4;
	__le32 opts5;
	__le32 opts6;
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};

struct tx_desc {
563
	__le32 opts1;
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#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)
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#define GTTCPHO_SHIFT		18
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#define GTTCPHO_MAX		0x7fU
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#define TX_LEN_MAX		0x3ffffU
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572
	__le32 opts2;
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#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 */
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#define MSS_SHIFT		17
#define MSS_MAX			0x7ffU
#define TCPHO_SHIFT		17
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#define TCPHO_MAX		0x7ffU
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#define TX_VLAN_TAG		BIT(16)
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};

584 585
struct r8152;

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struct rx_agg {
	struct list_head list;
	struct urb *urb;
589
	struct r8152 *context;
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	void *buffer;
	void *head;
};

struct tx_agg {
	struct list_head list;
	struct urb *urb;
597
	struct r8152 *context;
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	void *buffer;
	void *head;
	u32 skb_num;
	u32 skb_len;
};

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struct r8152 {
	unsigned long flags;
	struct usb_device *udev;
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	struct napi_struct napi;
608
	struct usb_interface *intf;
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	struct net_device *netdev;
610
	struct urb *intr_urb;
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	struct tx_agg tx_info[RTL8152_MAX_TX];
	struct rx_agg rx_info[RTL8152_MAX_RX];
	struct list_head rx_done, tx_free;
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	struct sk_buff_head tx_queue, rx_queue;
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	spinlock_t rx_lock, tx_lock;
616
	struct delayed_work schedule, hw_phy_work;
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	struct mii_if_info mii;
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	struct mutex control;	/* use for hw setting */
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#ifdef CONFIG_PM_SLEEP
	struct notifier_block pm_notifier;
#endif
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	struct rtl_ops {
		void (*init)(struct r8152 *);
		int (*enable)(struct r8152 *);
		void (*disable)(struct r8152 *);
627
		void (*up)(struct r8152 *);
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		void (*down)(struct r8152 *);
		void (*unload)(struct r8152 *);
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		int (*eee_get)(struct r8152 *, struct ethtool_eee *);
		int (*eee_set)(struct r8152 *, struct ethtool_eee *);
632
		bool (*in_nway)(struct r8152 *);
633
		void (*hw_phy_cfg)(struct r8152 *);
634
		void (*autosuspend_en)(struct r8152 *tp, bool enable);
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	} rtl_ops;

637
	int intr_interval;
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	u32 saved_wolopts;
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	u32 msg_enable;
640
	u32 tx_qlen;
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	u32 coalesce;
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	u16 ocp_base;
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	u16 speed;
644
	u8 *intr_buff;
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	u8 version;
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	u8 duplex;
	u8 autoneg;
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};

enum rtl_version {
	RTL_VER_UNKNOWN = 0,
	RTL_VER_01,
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	RTL_VER_02,
	RTL_VER_03,
	RTL_VER_04,
	RTL_VER_05,
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	RTL_VER_06,
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	RTL_VER_MAX
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};

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

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/* 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;
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static unsigned int agg_buf_sz = 16384;
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672

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#define RTL_LIMITED_TSO_SIZE	(agg_buf_sz - sizeof(struct tx_desc) - \
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				 VLAN_ETH_HLEN - VLAN_HLEN)

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static
int get_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data)
{
679 680 681 682 683 684 685 686
	int ret;
	void *tmp;

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

	ret = usb_control_msg(tp->udev, usb_rcvctrlpipe(tp->udev, 0),
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			      RTL8152_REQ_GET_REGS, RTL8152_REQT_READ,
			      value, index, tmp, size, 500);
689 690 691 692 693

	memcpy(data, tmp, size);
	kfree(tmp);

	return ret;
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}

static
int set_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data)
{
699 700 701
	int ret;
	void *tmp;

702
	tmp = kmemdup(data, size, GFP_KERNEL);
703 704 705 706
	if (!tmp)
		return -ENOMEM;

	ret = usb_control_msg(tp->udev, usb_sndctrlpipe(tp->udev, 0),
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			      RTL8152_REQ_SET_REGS, RTL8152_REQT_WRITE,
			      value, index, tmp, size, 500);
709 710

	kfree(tmp);
711

712
	return ret;
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}

static int generic_ocp_read(struct r8152 *tp, u16 index, u16 size,
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			    void *data, u16 type)
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{
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	u16 limit = 64;
	int ret = 0;
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	if (test_bit(RTL8152_UNPLUG, &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;
		}
	}

752 753 754
	if (ret == -ENODEV)
		set_bit(RTL8152_UNPLUG, &tp->flags);

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	return ret;
}

static int generic_ocp_write(struct r8152 *tp, u16 index, u16 byteen,
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			     u16 size, void *data, u16 type)
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{
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	int ret;
	u16 byteen_start, byteen_end, byen;
	u16 limit = 512;
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	if (test_bit(RTL8152_UNPLUG, &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);
	ret = set_registers(tp, index, type | byen, 4, data);
	if (ret < 0)
		goto error1;

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

	if (size) {
		size -= 4;

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

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

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

		byen = byteen_end | (byteen_end >> 4);
		ret = set_registers(tp, index, type | byen, 4, data);
		if (ret < 0)
			goto error1;
	}

error1:
822 823 824
	if (ret == -ENODEV)
		set_bit(RTL8152_UNPLUG, &tp->flags);

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	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_read(struct r8152 *tp, u16 index, u16 size, void *data)
{
	return generic_ocp_read(tp, index, size, data, MCU_TYPE_USB);
}

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)
{
854
	__le32 data;
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856
	generic_ocp_read(tp, index, sizeof(data), &data, type);
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	return __le32_to_cpu(data);
}

static void ocp_write_dword(struct r8152 *tp, u16 type, u16 index, u32 data)
{
863 864 865
	__le32 tmp = __cpu_to_le32(data);

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

static u16 ocp_read_word(struct r8152 *tp, u16 type, u16 index)
{
	u32 data;
871
	__le32 tmp;
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	u8 shift = index & 2;

	index &= ~3;

876
	generic_ocp_read(tp, index, sizeof(tmp), &tmp, type);
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878
	data = __le32_to_cpu(tmp);
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	data >>= (shift * 8);
	data &= 0xffff;

	return (u16)data;
}

static void ocp_write_word(struct r8152 *tp, u16 type, u16 index, u32 data)
{
887 888
	u32 mask = 0xffff;
	__le32 tmp;
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	u16 byen = BYTE_EN_WORD;
	u8 shift = index & 2;

	data &= mask;

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

901
	tmp = __cpu_to_le32(data);
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903
	generic_ocp_write(tp, index, byen, sizeof(tmp), &tmp, type);
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}

static u8 ocp_read_byte(struct r8152 *tp, u16 type, u16 index)
{
	u32 data;
909
	__le32 tmp;
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910 911 912 913
	u8 shift = index & 3;

	index &= ~3;

914
	generic_ocp_read(tp, index, sizeof(tmp), &tmp, type);
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916
	data = __le32_to_cpu(tmp);
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	data >>= (shift * 8);
	data &= 0xff;

	return (u8)data;
}

static void ocp_write_byte(struct r8152 *tp, u16 type, u16 index, u32 data)
{
925 926
	u32 mask = 0xff;
	__le32 tmp;
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	u16 byen = BYTE_EN_BYTE;
	u8 shift = index & 3;

	data &= mask;

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

939
	tmp = __cpu_to_le32(data);
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941
	generic_ocp_write(tp, index, byen, sizeof(tmp), &tmp, type);
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}

944
static u16 ocp_reg_read(struct r8152 *tp, u16 addr)
945 946 947 948 949 950 951 952 953 954
{
	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;
955
	return ocp_read_word(tp, MCU_TYPE_PLA, ocp_index);
956 957
}

958
static void ocp_reg_write(struct r8152 *tp, u16 addr, u16 data)
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{
960
	u16 ocp_base, ocp_index;
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962 963 964 965
	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;
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	}
967 968 969

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

972
static inline void r8152_mdio_write(struct r8152 *tp, u32 reg_addr, u32 value)
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{
974 975
	ocp_reg_write(tp, OCP_BASE_MII + reg_addr * 2, value);
}
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977 978 979
static inline int r8152_mdio_read(struct r8152 *tp, u32 reg_addr)
{
	return ocp_reg_read(tp, OCP_BASE_MII + reg_addr * 2);
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}

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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);
}

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static int read_mii_word(struct net_device *netdev, int phy_id, int reg)
{
	struct r8152 *tp = netdev_priv(netdev);
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	int ret;
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	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return -ENODEV;

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	if (phy_id != R8152_PHY_ID)
		return -EINVAL;

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	ret = r8152_mdio_read(tp, reg);

	return ret;
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}

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

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	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

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	if (phy_id != R8152_PHY_ID)
		return;

	r8152_mdio_write(tp, reg, val);
}

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static int
r8152_submit_rx(struct r8152 *tp, struct rx_agg *agg, gfp_t mem_flags);
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1021 1022 1023 1024
static int rtl8152_set_mac_address(struct net_device *netdev, void *p)
{
	struct r8152 *tp = netdev_priv(netdev);
	struct sockaddr *addr = p;
1025
	int ret = -EADDRNOTAVAIL;
1026 1027

	if (!is_valid_ether_addr(addr->sa_data))
1028 1029 1030 1031 1032
		goto out1;

	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		goto out1;
1033

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	mutex_lock(&tp->control);

1036 1037 1038 1039 1040 1041
	memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);

	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);

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	mutex_unlock(&tp->control);

1044 1045 1046
	usb_autopm_put_interface(tp->intf);
out1:
	return ret;
1047 1048
}

1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078
/* Devices containing RTL8153-AD 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];

	/* test for -AD variant of RTL8153 */
	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0);
	if ((ocp_data & AD_MASK) != 0x1000)
		return -ENODEV;

	/* test for MAC address pass-through bit */
	ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE);
	if ((ocp_data & PASS_THRU_MASK) != 1)
		return -ENODEV;

	/* returns _AUXMAC_#AABBCCDDEEFF# */
	status = acpi_evaluate_object(NULL, "\\_SB.AMAC", NULL, &buffer);
	obj = (union acpi_object *)buffer.pointer;
	if (!ACPI_SUCCESS(status))
		return -ENODEV;
	if (obj->type != ACPI_TYPE_BUFFER || obj->string.length != 0x17) {
		netif_warn(tp, probe, tp->netdev,
1079
			   "Invalid buffer for pass-thru MAC addr: (%d, %d)\n",
1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091
			   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,
1092 1093
			   "Invalid MAC for pass-thru MAC addr: %d, %pM\n",
			   ret, buf);
1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106
		ret = -EINVAL;
		goto amacout;
	}
	memcpy(sa->sa_data, buf, 6);
	ether_addr_copy(tp->netdev->dev_addr, sa->sa_data);
	netif_info(tp, probe, tp->netdev,
		   "Using pass-thru MAC addr %pM\n", sa->sa_data);

amacout:
	kfree(obj);
	return ret;
}

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static int set_ethernet_addr(struct r8152 *tp)
H
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1108 1109
{
	struct net_device *dev = tp->netdev;
H
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1110
	struct sockaddr sa;
H
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1111
	int ret;
H
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1112

1113
	if (tp->version == RTL_VER_01) {
H
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1114
		ret = pla_ocp_read(tp, PLA_IDR, 8, sa.sa_data);
1115
	} else {
1116 1117 1118 1119 1120 1121 1122 1123
		/* if this is not an RTL8153-AD, no eFuse mac pass thru set,
		 * or system doesn't provide valid _SB.AMAC this will be
		 * be expected to non-zero
		 */
		ret = vendor_mac_passthru_addr_read(tp, &sa);
		if (ret < 0)
			ret = pla_ocp_read(tp, PLA_BACKUP, 8, sa.sa_data);
	}
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1124 1125

	if (ret < 0) {
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1126 1127 1128 1129 1130 1131 1132 1133 1134
		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);
		ret = rtl8152_set_mac_address(dev, &sa);
		netif_info(tp, probe, dev, "Random ether addr %pM\n",
			   sa.sa_data);
H
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1135
	} else {
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1136 1137 1138 1139
		if (tp->version == RTL_VER_01)
			ether_addr_copy(dev->dev_addr, sa.sa_data);
		else
			ret = rtl8152_set_mac_address(dev, &sa);
H
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1140
	}
H
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1141 1142

	return ret;
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}

static void read_bulk_callback(struct urb *urb)
{
	struct net_device *netdev;
	int status = urb->status;
H
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1149 1150
	struct rx_agg *agg;
	struct r8152 *tp;
H
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1151

H
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1152 1153 1154 1155 1156
	agg = urb->context;
	if (!agg)
		return;

	tp = agg->context;
H
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1157 1158
	if (!tp)
		return;
H
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1159

H
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1160 1161
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;
H
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1162 1163 1164 1165

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

H
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1166
	netdev = tp->netdev;
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1167 1168 1169

	/* When link down, the driver would cancel all bulks. */
	/* This avoid the re-submitting bulk */
H
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1170
	if (!netif_carrier_ok(netdev))
H
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1171 1172
		return;

H
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1173 1174
	usb_mark_last_busy(tp->udev);

H
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1175 1176
	switch (status) {
	case 0:
H
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1177 1178 1179
		if (urb->actual_length < ETH_ZLEN)
			break;

1180
		spin_lock(&tp->rx_lock);
H
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1181
		list_add_tail(&agg->list, &tp->rx_done);
1182
		spin_unlock(&tp->rx_lock);
H
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1183
		napi_schedule(&tp->napi);
H
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1184
		return;
H
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1185 1186 1187
	case -ESHUTDOWN:
		set_bit(RTL8152_UNPLUG, &tp->flags);
		netif_device_detach(tp->netdev);
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1188
		return;
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1189 1190 1191
	case -ENOENT:
		return;	/* the urb is in unlink state */
	case -ETIME:
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1192 1193
		if (net_ratelimit())
			netdev_warn(netdev, "maybe reset is needed?\n");
H
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1194
		break;
H
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1195
	default:
H
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1196 1197
		if (net_ratelimit())
			netdev_warn(netdev, "Rx status %d\n", status);
H
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1198
		break;
H
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1199 1200
	}

H
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1201
	r8152_submit_rx(tp, agg, GFP_ATOMIC);
H
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1202 1203
}

H
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1204
static void write_bulk_callback(struct urb *urb)
H
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1205
{
H
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1206
	struct net_device_stats *stats;
1207
	struct net_device *netdev;
H
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1208
	struct tx_agg *agg;
H
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1209
	struct r8152 *tp;
H
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1210
	int status = urb->status;
H
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1211

H
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1212 1213
	agg = urb->context;
	if (!agg)
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1214 1215
		return;

H
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1216 1217 1218 1219
	tp = agg->context;
	if (!tp)
		return;

1220
	netdev = tp->netdev;
H
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1221
	stats = &netdev->stats;
H
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1222
	if (status) {
H
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1223
		if (net_ratelimit())
1224
			netdev_warn(netdev, "Tx status %d\n", status);
H
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1225
		stats->tx_errors += agg->skb_num;
H
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1226
	} else {
H
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1227 1228
		stats->tx_packets += agg->skb_num;
		stats->tx_bytes += agg->skb_len;
H
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1229 1230
	}

1231
	spin_lock(&tp->tx_lock);
H
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1232
	list_add_tail(&agg->list, &tp->tx_free);
1233
	spin_unlock(&tp->tx_lock);
H
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1234

H
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1235 1236
	usb_autopm_put_interface_async(tp->intf);

1237
	if (!netif_carrier_ok(netdev))
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1238 1239 1240 1241 1242 1243 1244 1245 1246
		return;

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

	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

	if (!skb_queue_empty(&tp->tx_queue))
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1247
		napi_schedule(&tp->napi);
H
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1248 1249
}

1250 1251 1252
static void intr_callback(struct urb *urb)
{
	struct r8152 *tp;
1253
	__le16 *d;
1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273
	int status = urb->status;
	int res;

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

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

	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

	switch (status) {
	case 0:			/* success */
		break;
	case -ECONNRESET:	/* unlink */
	case -ESHUTDOWN:
		netif_device_detach(tp->netdev);
	case -ENOENT:
1274 1275 1276
	case -EPROTO:
		netif_info(tp, intr, tp->netdev,
			   "Stop submitting intr, status %d\n", status);
1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288
		return;
	case -EOVERFLOW:
		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])) {
1289
		if (!netif_carrier_ok(tp->netdev)) {
1290 1291 1292 1293
			set_bit(RTL8152_LINK_CHG, &tp->flags);
			schedule_delayed_work(&tp->schedule, 0);
		}
	} else {
1294
		if (netif_carrier_ok(tp->netdev)) {
1295 1296 1297 1298 1299 1300 1301
			set_bit(RTL8152_LINK_CHG, &tp->flags);
			schedule_delayed_work(&tp->schedule, 0);
		}
	}

resubmit:
	res = usb_submit_urb(urb, GFP_ATOMIC);
1302 1303
	if (res == -ENODEV) {
		set_bit(RTL8152_UNPLUG, &tp->flags);
1304
		netif_device_detach(tp->netdev);
1305
	} else if (res) {
1306
		netif_err(tp, intr, tp->netdev,
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1307
			  "can't resubmit intr, status %d\n", res);
1308
	}
1309 1310
}

H
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1311 1312
static inline void *rx_agg_align(void *data)
{
H
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1313
	return (void *)ALIGN((uintptr_t)data, RX_ALIGN);
H
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1314 1315 1316 1317
}

static inline void *tx_agg_align(void *data)
{
H
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1318
	return (void *)ALIGN((uintptr_t)data, TX_ALIGN);
H
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1319 1320 1321 1322 1323 1324 1325
}

static void free_all_mem(struct r8152 *tp)
{
	int i;

	for (i = 0; i < RTL8152_MAX_RX; i++) {
1326 1327
		usb_free_urb(tp->rx_info[i].urb);
		tp->rx_info[i].urb = NULL;
H
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1329 1330 1331
		kfree(tp->rx_info[i].buffer);
		tp->rx_info[i].buffer = NULL;
		tp->rx_info[i].head = NULL;
H
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1332 1333 1334
	}

	for (i = 0; i < RTL8152_MAX_TX; i++) {
1335 1336
		usb_free_urb(tp->tx_info[i].urb);
		tp->tx_info[i].urb = NULL;
H
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1338 1339 1340
		kfree(tp->tx_info[i].buffer);
		tp->tx_info[i].buffer = NULL;
		tp->tx_info[i].head = NULL;
H
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1341
	}
1342

1343 1344
	usb_free_urb(tp->intr_urb);
	tp->intr_urb = NULL;
1345

1346 1347
	kfree(tp->intr_buff);
	tp->intr_buff = NULL;
H
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1348 1349 1350 1351 1352
}

static int alloc_all_mem(struct r8152 *tp)
{
	struct net_device *netdev = tp->netdev;
1353 1354 1355
	struct usb_interface *intf = tp->intf;
	struct usb_host_interface *alt = intf->cur_altsetting;
	struct usb_host_endpoint *ep_intr = alt->endpoint + 2;
H
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	struct urb *urb;
	int node, i;
	u8 *buf;

	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->tx_free);
1365
	INIT_LIST_HEAD(&tp->rx_done);
H
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1366
	skb_queue_head_init(&tp->tx_queue);
H
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1367
	skb_queue_head_init(&tp->rx_queue);
H
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1368 1369

	for (i = 0; i < RTL8152_MAX_RX; i++) {
H
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1370
		buf = kmalloc_node(agg_buf_sz, GFP_KERNEL, node);
H
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1371 1372 1373 1374 1375
		if (!buf)
			goto err1;

		if (buf != rx_agg_align(buf)) {
			kfree(buf);
H
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1376
			buf = kmalloc_node(agg_buf_sz + RX_ALIGN, GFP_KERNEL,
H
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1377
					   node);
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1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395
			if (!buf)
				goto err1;
		}

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

		INIT_LIST_HEAD(&tp->rx_info[i].list);
		tp->rx_info[i].context = tp;
		tp->rx_info[i].urb = urb;
		tp->rx_info[i].buffer = buf;
		tp->rx_info[i].head = rx_agg_align(buf);
	}

	for (i = 0; i < RTL8152_MAX_TX; i++) {
H
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1396
		buf = kmalloc_node(agg_buf_sz, GFP_KERNEL, node);
H
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1397 1398 1399 1400 1401
		if (!buf)
			goto err1;

		if (buf != tx_agg_align(buf)) {
			kfree(buf);
H
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1402
			buf = kmalloc_node(agg_buf_sz + TX_ALIGN, GFP_KERNEL,
H
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1403
					   node);
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1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422
			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);
	}

1423 1424 1425 1426 1427 1428 1429 1430 1431 1432
	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, usb_rcvintpipe(tp->udev, 3),
H
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1433 1434
			 tp->intr_buff, INTBUFSIZE, intr_callback,
			 tp, tp->intr_interval);
1435

H
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1436 1437 1438 1439 1440 1441 1442
	return 0;

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

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1443 1444 1445 1446 1447
static struct tx_agg *r8152_get_tx_agg(struct r8152 *tp)
{
	struct tx_agg *agg = NULL;
	unsigned long flags;

1448 1449 1450
	if (list_empty(&tp->tx_free))
		return NULL;

H
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1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463
	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;
}

H
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1464
/* r8152_csum_workaround()
H
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1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475
 * The hw limites the value the transport offset. When the offset is out of the
 * 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_head seg_list;
		struct sk_buff *segs, *nskb;

1476
		features &= ~(NETIF_F_SG | NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
H
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1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506
		segs = skb_gso_segment(skb, features);
		if (IS_ERR(segs) || !segs)
			goto drop;

		__skb_queue_head_init(&seg_list);

		do {
			nskb = segs;
			segs = segs->next;
			nskb->next = NULL;
			__skb_queue_tail(&seg_list, nskb);
		} while (segs);

		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);
	}
}

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1507
/* msdn_giant_send_check()
H
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1508 1509 1510 1511 1512 1513 1514
 * According to the document of microsoft, the TCP Pseudo Header excludes the
 * packet length for IPv6 TCP large packets.
 */
static int msdn_giant_send_check(struct sk_buff *skb)
{
	const struct ipv6hdr *ipv6h;
	struct tcphdr *th;
H
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1515 1516 1517 1518 1519
	int ret;

	ret = skb_cow_head(skb, 0);
	if (ret)
		return ret;
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1520 1521 1522 1523 1524 1525 1526

	ipv6h = ipv6_hdr(skb);
	th = tcp_hdr(skb);

	th->check = 0;
	th->check = ~tcp_v6_check(0, &ipv6h->saddr, &ipv6h->daddr, 0);

H
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1527
	return ret;
H
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1528 1529
}

H
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1530 1531
static inline void rtl_tx_vlan_tag(struct tx_desc *desc, struct sk_buff *skb)
{
1532
	if (skb_vlan_tag_present(skb)) {
H
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1533 1534
		u32 opts2;

1535
		opts2 = TX_VLAN_TAG | swab16(skb_vlan_tag_get(skb));
H
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1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548
		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));
}

H
hayeswang 已提交
1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560
static int r8152_tx_csum(struct r8152 *tp, struct tx_desc *desc,
			 struct sk_buff *skb, u32 len, u32 transport_offset)
{
	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) {
H
hayeswang 已提交
1561 1562 1563 1564 1565 1566 1567 1568
		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;
		}

1569
		switch (vlan_get_protocol(skb)) {
H
hayeswang 已提交
1570 1571 1572 1573
		case htons(ETH_P_IP):
			opts1 |= GTSENDV4;
			break;

H
hayeswang 已提交
1574
		case htons(ETH_P_IPV6):
H
hayeswang 已提交
1575 1576 1577 1578
			if (msdn_giant_send_check(skb)) {
				ret = TX_CSUM_TSO;
				goto unavailable;
			}
H
hayeswang 已提交
1579 1580 1581
			opts1 |= GTSENDV6;
			break;

H
hayeswang 已提交
1582 1583 1584 1585 1586 1587 1588 1589 1590
		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) {
		u8 ip_protocol;
H
hayeswang 已提交
1591

H
hayeswang 已提交
1592 1593 1594 1595 1596 1597 1598 1599
		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;
		}

1600
		switch (vlan_get_protocol(skb)) {
H
hayeswang 已提交
1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615
		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;
		}

H
hayeswang 已提交
1616
		if (ip_protocol == IPPROTO_TCP)
H
hayeswang 已提交
1617
			opts2 |= TCP_CS;
H
hayeswang 已提交
1618
		else if (ip_protocol == IPPROTO_UDP)
H
hayeswang 已提交
1619
			opts2 |= UDP_CS;
H
hayeswang 已提交
1620
		else
H
hayeswang 已提交
1621 1622
			WARN_ON_ONCE(1);

H
hayeswang 已提交
1623
		opts2 |= transport_offset << TCPHO_SHIFT;
H
hayeswang 已提交
1624
	}
H
hayeswang 已提交
1625 1626 1627 1628

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

H
hayeswang 已提交
1629
unavailable:
H
hayeswang 已提交
1630
	return ret;
H
hayeswang 已提交
1631 1632
}

H
hayeswang 已提交
1633 1634
static int r8152_tx_agg_fill(struct r8152 *tp, struct tx_agg *agg)
{
1635
	struct sk_buff_head skb_head, *tx_queue = &tp->tx_queue;
H
hayeswang 已提交
1636
	int remain, ret;
H
hayeswang 已提交
1637 1638
	u8 *tx_data;

1639
	__skb_queue_head_init(&skb_head);
1640
	spin_lock(&tx_queue->lock);
1641
	skb_queue_splice_init(tx_queue, &skb_head);
1642
	spin_unlock(&tx_queue->lock);
1643

H
hayeswang 已提交
1644
	tx_data = agg->head;
H
hayeswang 已提交
1645 1646
	agg->skb_num = 0;
	agg->skb_len = 0;
H
hayeswang 已提交
1647
	remain = agg_buf_sz;
H
hayeswang 已提交
1648

H
hayeswang 已提交
1649
	while (remain >= ETH_ZLEN + sizeof(struct tx_desc)) {
H
hayeswang 已提交
1650 1651 1652
		struct tx_desc *tx_desc;
		struct sk_buff *skb;
		unsigned int len;
H
hayeswang 已提交
1653
		u32 offset;
H
hayeswang 已提交
1654

1655
		skb = __skb_dequeue(&skb_head);
H
hayeswang 已提交
1656 1657 1658
		if (!skb)
			break;

H
hayeswang 已提交
1659 1660 1661
		len = skb->len + sizeof(*tx_desc);

		if (len > remain) {
1662
			__skb_queue_head(&skb_head, skb);
H
hayeswang 已提交
1663 1664 1665
			break;
		}

H
hayeswang 已提交
1666
		tx_data = tx_agg_align(tx_data);
H
hayeswang 已提交
1667
		tx_desc = (struct tx_desc *)tx_data;
H
hayeswang 已提交
1668 1669 1670

		offset = (u32)skb_transport_offset(skb);

H
hayeswang 已提交
1671 1672 1673 1674
		if (r8152_tx_csum(tp, tx_desc, skb, skb->len, offset)) {
			r8152_csum_workaround(tp, skb, &skb_head);
			continue;
		}
H
hayeswang 已提交
1675

H
hayeswang 已提交
1676 1677
		rtl_tx_vlan_tag(tx_desc, skb);

H
hayeswang 已提交
1678 1679
		tx_data += sizeof(*tx_desc);

H
hayeswang 已提交
1680 1681 1682 1683 1684 1685 1686 1687 1688 1689 1690
		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;
H
hayeswang 已提交
1691
		agg->skb_len += len;
H
hayeswang 已提交
1692 1693
		agg->skb_num++;

H
hayeswang 已提交
1694 1695
		dev_kfree_skb_any(skb);

H
hayeswang 已提交
1696
		remain = agg_buf_sz - (int)(tx_agg_align(tx_data) - agg->head);
H
hayeswang 已提交
1697 1698
	}

1699
	if (!skb_queue_empty(&skb_head)) {
1700
		spin_lock(&tx_queue->lock);
1701
		skb_queue_splice(&skb_head, tx_queue);
1702
		spin_unlock(&tx_queue->lock);
1703 1704
	}

1705
	netif_tx_lock(tp->netdev);
1706 1707 1708 1709 1710

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

1711
	netif_tx_unlock(tp->netdev);
H
hayeswang 已提交
1712

1713
	ret = usb_autopm_get_interface_async(tp->intf);
H
hayeswang 已提交
1714 1715
	if (ret < 0)
		goto out_tx_fill;
1716

H
hayeswang 已提交
1717 1718 1719 1720
	usb_fill_bulk_urb(agg->urb, tp->udev, usb_sndbulkpipe(tp->udev, 2),
			  agg->head, (int)(tx_data - (u8 *)agg->head),
			  (usb_complete_t)write_bulk_callback, agg);

1721
	ret = usb_submit_urb(agg->urb, GFP_ATOMIC);
H
hayeswang 已提交
1722
	if (ret < 0)
1723
		usb_autopm_put_interface_async(tp->intf);
H
hayeswang 已提交
1724 1725 1726

out_tx_fill:
	return ret;
H
hayeswang 已提交
1727 1728
}

H
hayeswang 已提交
1729 1730 1731 1732 1733
static u8 r8152_rx_csum(struct r8152 *tp, struct rx_desc *rx_desc)
{
	u8 checksum = CHECKSUM_NONE;
	u32 opts2, opts3;

1734
	if (!(tp->netdev->features & NETIF_F_RXCSUM))
H
hayeswang 已提交
1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748
		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_NONE;
		else if ((opts2 & RD_TCP_CS) && (opts3 & TCPF))
			checksum = CHECKSUM_NONE;
		else
			checksum = CHECKSUM_UNNECESSARY;
M
Mark Lord 已提交
1749
	} else if (opts2 & RD_IPV6_CS) {
H
hayeswang 已提交
1750 1751 1752 1753
		if ((opts2 & RD_UDP_CS) && !(opts3 & UDPF))
			checksum = CHECKSUM_UNNECESSARY;
		else if ((opts2 & RD_TCP_CS) && !(opts3 & TCPF))
			checksum = CHECKSUM_UNNECESSARY;
H
hayeswang 已提交
1754 1755 1756 1757 1758 1759
	}

return_result:
	return checksum;
}

H
hayeswang 已提交
1760
static int rx_bottom(struct r8152 *tp, int budget)
H
hayeswang 已提交
1761
{
H
hayeswang 已提交
1762
	unsigned long flags;
1763
	struct list_head *cursor, *next, rx_queue;
H
hayeswang 已提交
1764
	int ret = 0, work_done = 0;
H
hayeswang 已提交
1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782

	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(&tp->napi, skb);
			work_done++;
			stats->rx_packets++;
			stats->rx_bytes += pkt_len;
		}
	}
H
hayeswang 已提交
1783

1784
	if (list_empty(&tp->rx_done))
H
hayeswang 已提交
1785
		goto out1;
1786 1787

	INIT_LIST_HEAD(&rx_queue);
H
hayeswang 已提交
1788
	spin_lock_irqsave(&tp->rx_lock, flags);
1789 1790 1791 1792
	list_splice_init(&tp->rx_done, &rx_queue);
	spin_unlock_irqrestore(&tp->rx_lock, flags);

	list_for_each_safe(cursor, next, &rx_queue) {
1793 1794 1795 1796 1797 1798
		struct rx_desc *rx_desc;
		struct rx_agg *agg;
		int len_used = 0;
		struct urb *urb;
		u8 *rx_data;

H
hayeswang 已提交
1799 1800 1801 1802
		list_del_init(cursor);

		agg = list_entry(cursor, struct rx_agg, list);
		urb = agg->urb;
H
hayeswang 已提交
1803 1804
		if (urb->actual_length < ETH_ZLEN)
			goto submit;
H
hayeswang 已提交
1805 1806 1807

		rx_desc = agg->head;
		rx_data = agg->head;
H
hayeswang 已提交
1808
		len_used += sizeof(struct rx_desc);
H
hayeswang 已提交
1809

H
hayeswang 已提交
1810
		while (urb->actual_length > len_used) {
1811
			struct net_device *netdev = tp->netdev;
H
hayeswang 已提交
1812
			struct net_device_stats *stats = &netdev->stats;
H
hayeswang 已提交
1813
			unsigned int pkt_len;
1814 1815
			struct sk_buff *skb;

H
hayeswang 已提交
1816
			pkt_len = le32_to_cpu(rx_desc->opts1) & RX_LEN_MASK;
H
hayeswang 已提交
1817 1818 1819
			if (pkt_len < ETH_ZLEN)
				break;

H
hayeswang 已提交
1820 1821 1822 1823
			len_used += pkt_len;
			if (urb->actual_length < len_used)
				break;

H
hayeswang 已提交
1824
			pkt_len -= CRC_SIZE;
H
hayeswang 已提交
1825 1826
			rx_data += sizeof(struct rx_desc);

1827
			skb = napi_alloc_skb(&tp->napi, pkt_len);
H
hayeswang 已提交
1828 1829
			if (!skb) {
				stats->rx_dropped++;
1830
				goto find_next_rx;
H
hayeswang 已提交
1831
			}
H
hayeswang 已提交
1832 1833

			skb->ip_summed = r8152_rx_csum(tp, rx_desc);
H
hayeswang 已提交
1834 1835 1836
			memcpy(skb->data, rx_data, pkt_len);
			skb_put(skb, pkt_len);
			skb->protocol = eth_type_trans(skb, netdev);
H
hayeswang 已提交
1837
			rtl_rx_vlan_tag(rx_desc, skb);
H
hayeswang 已提交
1838 1839 1840 1841 1842 1843 1844 1845
			if (work_done < budget) {
				napi_gro_receive(&tp->napi, skb);
				work_done++;
				stats->rx_packets++;
				stats->rx_bytes += pkt_len;
			} else {
				__skb_queue_tail(&tp->rx_queue, skb);
			}
H
hayeswang 已提交
1846

1847
find_next_rx:
H
hayeswang 已提交
1848
			rx_data = rx_agg_align(rx_data + pkt_len + CRC_SIZE);
H
hayeswang 已提交
1849 1850
			rx_desc = (struct rx_desc *)rx_data;
			len_used = (int)(rx_data - (u8 *)agg->head);
H
hayeswang 已提交
1851
			len_used += sizeof(struct rx_desc);
H
hayeswang 已提交
1852 1853
		}

H
hayeswang 已提交
1854
submit:
H
hayeswang 已提交
1855 1856 1857 1858 1859 1860 1861 1862 1863 1864 1865 1866
		if (!ret) {
			ret = r8152_submit_rx(tp, agg, GFP_ATOMIC);
		} else {
			urb->actual_length = 0;
			list_add_tail(&agg->list, next);
		}
	}

	if (!list_empty(&rx_queue)) {
		spin_lock_irqsave(&tp->rx_lock, flags);
		list_splice_tail(&rx_queue, &tp->rx_done);
		spin_unlock_irqrestore(&tp->rx_lock, flags);
H
hayeswang 已提交
1867
	}
H
hayeswang 已提交
1868 1869 1870

out1:
	return work_done;
H
hayeswang 已提交
1871 1872 1873 1874 1875 1876
}

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

H
hayeswang 已提交
1877 1878
	do {
		struct tx_agg *agg;
H
hayeswang 已提交
1879

H
hayeswang 已提交
1880
		if (skb_queue_empty(&tp->tx_queue))
H
hayeswang 已提交
1881 1882
			break;

H
hayeswang 已提交
1883 1884
		agg = r8152_get_tx_agg(tp);
		if (!agg)
H
hayeswang 已提交
1885 1886
			break;

H
hayeswang 已提交
1887 1888
		res = r8152_tx_agg_fill(tp, agg);
		if (res) {
H
hayeswang 已提交
1889
			struct net_device *netdev = tp->netdev;
H
hayeswang 已提交
1890

H
hayeswang 已提交
1891
			if (res == -ENODEV) {
1892
				set_bit(RTL8152_UNPLUG, &tp->flags);
H
hayeswang 已提交
1893 1894
				netif_device_detach(netdev);
			} else {
H
hayeswang 已提交
1895 1896 1897
				struct net_device_stats *stats = &netdev->stats;
				unsigned long flags;

H
hayeswang 已提交
1898 1899 1900
				netif_warn(tp, tx_err, netdev,
					   "failed tx_urb %d\n", res);
				stats->tx_dropped += agg->skb_num;
1901

H
hayeswang 已提交
1902 1903 1904 1905
				spin_lock_irqsave(&tp->tx_lock, flags);
				list_add_tail(&agg->list, &tp->tx_free);
				spin_unlock_irqrestore(&tp->tx_lock, flags);
			}
H
hayeswang 已提交
1906
		}
H
hayeswang 已提交
1907
	} while (res == 0);
H
hayeswang 已提交
1908 1909
}

H
hayeswang 已提交
1910
static void bottom_half(struct r8152 *tp)
H
hayeswang 已提交
1911
{
H
hayeswang 已提交
1912 1913 1914 1915
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

	if (!test_bit(WORK_ENABLE, &tp->flags))
H
hayeswang 已提交
1916
		return;
H
hayeswang 已提交
1917

H
hayeswang 已提交
1918 1919
	/* When link down, the driver would cancel all bulks. */
	/* This avoid the re-submitting bulk */
H
hayeswang 已提交
1920
	if (!netif_carrier_ok(tp->netdev))
H
hayeswang 已提交
1921
		return;
H
hayeswang 已提交
1922

H
hayeswang 已提交
1923
	clear_bit(SCHEDULE_NAPI, &tp->flags);
1924

1925
	tx_bottom(tp);
H
hayeswang 已提交
1926 1927
}

H
hayeswang 已提交
1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939
static int r8152_poll(struct napi_struct *napi, int budget)
{
	struct r8152 *tp = container_of(napi, struct r8152, napi);
	int work_done;

	work_done = rx_bottom(tp, budget);
	bottom_half(tp);

	if (work_done < budget) {
		napi_complete(napi);
		if (!list_empty(&tp->rx_done))
			napi_schedule(napi);
H
hayeswang 已提交
1940 1941 1942
		else if (!skb_queue_empty(&tp->tx_queue) &&
			 !list_empty(&tp->tx_free))
			napi_schedule(napi);
H
hayeswang 已提交
1943 1944 1945 1946 1947
	}

	return work_done;
}

H
hayeswang 已提交
1948 1949 1950
static
int r8152_submit_rx(struct r8152 *tp, struct rx_agg *agg, gfp_t mem_flags)
{
H
hayeswang 已提交
1951 1952
	int ret;

1953 1954 1955 1956 1957
	/* The rx would be stopped, so skip submitting */
	if (test_bit(RTL8152_UNPLUG, &tp->flags) ||
	    !test_bit(WORK_ENABLE, &tp->flags) || !netif_carrier_ok(tp->netdev))
		return 0;

H
hayeswang 已提交
1958
	usb_fill_bulk_urb(agg->urb, tp->udev, usb_rcvbulkpipe(tp->udev, 1),
H
hayeswang 已提交
1959
			  agg->head, agg_buf_sz,
H
hayeswang 已提交
1960
			  (usb_complete_t)read_bulk_callback, agg);
H
hayeswang 已提交
1961

H
hayeswang 已提交
1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973
	ret = usb_submit_urb(agg->urb, mem_flags);
	if (ret == -ENODEV) {
		set_bit(RTL8152_UNPLUG, &tp->flags);
		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);
H
hayeswang 已提交
1974 1975 1976 1977 1978

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

		napi_schedule(&tp->napi);
H
hayeswang 已提交
1979 1980 1981
	}

	return ret;
H
hayeswang 已提交
1982 1983
}

H
hayeswang 已提交
1984 1985 1986
static void rtl_drop_queued_tx(struct r8152 *tp)
{
	struct net_device_stats *stats = &tp->netdev->stats;
1987
	struct sk_buff_head skb_head, *tx_queue = &tp->tx_queue;
H
hayeswang 已提交
1988 1989
	struct sk_buff *skb;

1990 1991 1992 1993
	if (skb_queue_empty(tx_queue))
		return;

	__skb_queue_head_init(&skb_head);
1994
	spin_lock_bh(&tx_queue->lock);
1995
	skb_queue_splice_init(tx_queue, &skb_head);
1996
	spin_unlock_bh(&tx_queue->lock);
1997 1998

	while ((skb = __skb_dequeue(&skb_head))) {
H
hayeswang 已提交
1999 2000 2001 2002 2003
		dev_kfree_skb(skb);
		stats->tx_dropped++;
	}
}

H
hayeswang 已提交
2004 2005 2006
static void rtl8152_tx_timeout(struct net_device *netdev)
{
	struct r8152 *tp = netdev_priv(netdev);
H
hayeswang 已提交
2007

H
Hayes Wang 已提交
2008
	netif_warn(tp, tx_err, netdev, "Tx timeout\n");
H
hayeswang 已提交
2009 2010

	usb_queue_reset_device(tp->intf);
H
hayeswang 已提交
2011 2012 2013 2014 2015 2016
}

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

2017
	if (netif_carrier_ok(netdev)) {
H
hayeswang 已提交
2018
		set_bit(RTL8152_SET_RX_MODE, &tp->flags);
2019 2020
		schedule_delayed_work(&tp->schedule, 0);
	}
H
hayeswang 已提交
2021 2022 2023 2024 2025
}

static void _rtl8152_set_rx_mode(struct net_device *netdev)
{
	struct r8152 *tp = netdev_priv(netdev);
2026 2027
	u32 mc_filter[2];	/* Multicast hash filter */
	__le32 tmp[2];
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	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;
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		mc_filter[1] = 0xffffffff;
		mc_filter[0] = 0xffffffff;
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	} else if ((netdev_mc_count(netdev) > multicast_filter_limit) ||
		   (netdev->flags & IFF_ALLMULTI)) {
		/* Too many to filter perfectly -- accept all multicasts. */
		ocp_data |= RCR_AM;
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		mc_filter[1] = 0xffffffff;
		mc_filter[0] = 0xffffffff;
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	} else {
		struct netdev_hw_addr *ha;

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		mc_filter[1] = 0;
		mc_filter[0] = 0;
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		netdev_for_each_mc_addr(ha, netdev) {
			int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26;
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			mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31);
			ocp_data |= RCR_AM;
		}
	}

2060 2061
	tmp[0] = __cpu_to_le32(swab32(mc_filter[1]));
	tmp[1] = __cpu_to_le32(swab32(mc_filter[0]));
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2063
	pla_ocp_write(tp, PLA_MAR, BYTE_EN_DWORD, sizeof(tmp), tmp);
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	ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data);
	netif_wake_queue(netdev);
}

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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;
	int offset = skb_transport_offset(skb);

	if ((mss || skb->ip_summed == CHECKSUM_PARTIAL) && offset > max_offset)
2077
		features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
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	else if ((skb->len + sizeof(struct tx_desc)) > agg_buf_sz)
		features &= ~NETIF_F_GSO_MASK;

	return features;
}

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

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	skb_tx_timestamp(skb);
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	skb_queue_tail(&tp->tx_queue, skb);
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2093 2094
	if (!list_empty(&tp->tx_free)) {
		if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
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			set_bit(SCHEDULE_NAPI, &tp->flags);
2096 2097 2098
			schedule_delayed_work(&tp->schedule, 0);
		} else {
			usb_mark_last_busy(tp->udev);
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			napi_schedule(&tp->napi);
2100
		}
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	} else if (skb_queue_len(&tp->tx_queue) > tp->tx_qlen) {
2102
		netif_stop_queue(netdev);
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	}
2104

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	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)
{
	int	i;

	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, CR_RST);

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

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static void set_tx_qlen(struct r8152 *tp)
{
	struct net_device *netdev = tp->netdev;

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	tp->tx_qlen = agg_buf_sz / (netdev->mtu + VLAN_ETH_HLEN + VLAN_HLEN +
				    sizeof(struct tx_desc));
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}

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static inline u8 rtl8152_get_speed(struct r8152 *tp)
{
	return ocp_read_byte(tp, MCU_TYPE_PLA, PLA_PHYSTATUS);
}

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static void rtl_set_eee_plus(struct r8152 *tp)
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{
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	u32 ocp_data;
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	u8 speed;

	speed = rtl8152_get_speed(tp);
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	if (speed & _10bps) {
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		ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR);
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		ocp_data |= EEEP_CR_EEEP_TX;
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		ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR, ocp_data);
	} else {
		ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR);
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		ocp_data &= ~EEEP_CR_EEEP_TX;
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		ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR, ocp_data);
	}
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}

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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);
}

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static int rtl_start_rx(struct r8152 *tp)
{
	int i, ret = 0;

	INIT_LIST_HEAD(&tp->rx_done);
	for (i = 0; i < RTL8152_MAX_RX; i++) {
		INIT_LIST_HEAD(&tp->rx_info[i].list);
		ret = r8152_submit_rx(tp, &tp->rx_info[i], GFP_KERNEL);
		if (ret)
			break;
	}

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	if (ret && ++i < RTL8152_MAX_RX) {
		struct list_head rx_queue;
		unsigned long flags;

		INIT_LIST_HEAD(&rx_queue);

		do {
			struct rx_agg *agg = &tp->rx_info[i++];
			struct urb *urb = agg->urb;

			urb->actual_length = 0;
			list_add_tail(&agg->list, &rx_queue);
		} while (i < RTL8152_MAX_RX);

		spin_lock_irqsave(&tp->rx_lock, flags);
		list_splice_tail(&rx_queue, &tp->rx_done);
		spin_unlock_irqrestore(&tp->rx_lock, flags);
	}

2205 2206 2207 2208 2209 2210 2211 2212 2213 2214
	return ret;
}

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

	for (i = 0; i < RTL8152_MAX_RX; i++)
		usb_kill_urb(tp->rx_info[i].urb);

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

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	return 0;
}

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

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	rxdy_gated_en(tp, false);
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2233
	return 0;
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}

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static int rtl8152_enable(struct r8152 *tp)
{
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	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return -ENODEV;

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	set_tx_qlen(tp);
	rtl_set_eee_plus(tp);

	return rtl_enable(tp);
}

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static void r8153_set_rx_early_timeout(struct r8152 *tp)
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{
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	u32 ocp_data = tp->coalesce / 8;
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	ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_TIMEOUT, ocp_data);
}

static void r8153_set_rx_early_size(struct r8152 *tp)
{
	u32 mtu = tp->netdev->mtu;
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	u32 ocp_data = (agg_buf_sz - mtu - VLAN_ETH_HLEN - VLAN_HLEN) / 8;
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	ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_SIZE, ocp_data);
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}

static int rtl8153_enable(struct r8152 *tp)
{
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	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return -ENODEV;

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	usb_disable_lpm(tp->udev);
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	set_tx_qlen(tp);
	rtl_set_eee_plus(tp);
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	r8153_set_rx_early_timeout(tp);
	r8153_set_rx_early_size(tp);
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	return rtl_enable(tp);
}

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static void rtl_disable(struct r8152 *tp)
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{
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	u32 ocp_data;
	int i;
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	if (test_bit(RTL8152_UNPLUG, &tp->flags)) {
		rtl_drop_queued_tx(tp);
		return;
	}

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	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);

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	rtl_drop_queued_tx(tp);
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	for (i = 0; i < RTL8152_MAX_TX; i++)
		usb_kill_urb(tp->tx_info[i].urb);
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	rxdy_gated_en(tp, true);
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	for (i = 0; i < 1000; i++) {
		ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
		if ((ocp_data & FIFO_EMPTY) == FIFO_EMPTY)
			break;
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		usleep_range(1000, 2000);
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	}

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

2310
	rtl_stop_rx(tp);
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	rtl8152_nic_reset(tp);
}

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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);
}

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

	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);
}

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);
2348 2349 2350 2351 2352
	int ret;

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

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	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);
	}

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	mutex_unlock(&tp->control);

2365 2366 2367 2368
	usb_autopm_put_interface(tp->intf);

out:
	return ret;
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}

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#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);
2410
	ocp_data &= ~(UWF_EN | BWF_EN | MWF_EN);
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	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);
}

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

	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL);
	if (enable && tp->version != RTL_VER_03 && tp->version != RTL_VER_04)
		ocp_data |= U2P3_ENABLE;
	else
		ocp_data &= ~U2P3_ENABLE;
	ocp_write_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL, ocp_data);
}

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);
}

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

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

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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 {
2495 2496
		u32 ocp_data;

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		__rtl_set_wol(tp, tp->saved_wolopts);
2498 2499 2500 2501 2502 2503 2504 2505

		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);
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	}
}
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static void rtl8153_runtime_enable(struct r8152 *tp, bool enable)
{
	rtl_runtime_suspend_enable(tp, enable);

	if (enable) {
		r8153_u1u2en(tp, false);
		r8153_u2p3en(tp, false);
	} else {
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		r8153_u2p3en(tp, true);
		r8153_u1u2en(tp, true);
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	}
}

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

	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);

	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);
}

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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);
}

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static void r8152_aldps_en(struct r8152 *tp, bool enable)
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{
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	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);
	}
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}

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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 r8152b_enable_eee(struct r8152 *tp)
{
	r8152_eee_en(tp, true);
	r8152_mmd_write(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV, MDIO_EEE_100TX);
}

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);
}

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

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static void r8152b_hw_phy_cfg(struct r8152 *tp)
{
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	r8152b_enable_eee(tp);
	r8152_aldps_en(tp, true);
	r8152b_enable_fc(tp);
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	set_bit(PHY_RESET, &tp->flags);
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}

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

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	rxdy_gated_en(tp, true);
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	r8153_teredo_off(tp);
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	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);

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

	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);

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

	rtl8152_nic_reset(tp);

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

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	if (tp->udev->speed == USB_SPEED_FULL ||
	    tp->udev->speed == USB_SPEED_LOW) {
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		/* 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_NORMAL);

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

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	rtl_rx_vlan_en(tp, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);
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	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)
{
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	u32 ocp_data;
	int i;
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	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);

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

	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);

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

	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, RTL8152_RMS);

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	rtl_rx_vlan_en(tp, true);
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	ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PAL_BDC_CR);
	ocp_data |= ALDPS_PROXY_MODE;
	ocp_write_word(tp, MCU_TYPE_PLA, PAL_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);

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	rxdy_gated_en(tp, false);
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	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);
}

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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 {
		data &= ~EN_ALDPS;
		ocp_reg_write(tp, OCP_POWER_CFG, data);
		msleep(20);
	}
}

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);
}

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static void r8153_hw_phy_cfg(struct r8152 *tp)
{
	u32 ocp_data;
	u16 data;

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	/* disable ALDPS before updating the PHY parameters */
	r8153_aldps_en(tp, false);
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	/* disable EEE before updating the PHY parameters */
	r8153_eee_en(tp, false);
	ocp_reg_write(tp, OCP_EEE_ADV, 0);
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	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);
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	sram_write(tp, SRAM_IMPEDANCE, 0x0b13);
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	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);

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	/* Enable LPF corner auto tune */
	sram_write(tp, SRAM_LPF_CFG, 0xf70f);
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	/* Adjust 10M Amplitude */
	sram_write(tp, SRAM_10M_AMP1, 0x00af);
	sram_write(tp, SRAM_10M_AMP2, 0x0208);
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	r8153_eee_en(tp, true);
	ocp_reg_write(tp, OCP_EEE_ADV, MDIO_EEE_1000T | MDIO_EEE_100TX);

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	r8153_aldps_en(tp, true);
	r8152b_enable_fc(tp);

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

static void r8153_first_init(struct r8152 *tp)
{
	u32 ocp_data;
	int i;

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	rxdy_gated_en(tp, true);
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	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);
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	rtl_reset_bmu(tp);
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	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);

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

	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);

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

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	rtl_rx_vlan_en(tp, tp->netdev->features & NETIF_F_HW_VLAN_CTAG_RX);
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	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, RTL8153_RMS);
	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
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	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);

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	/* rx aggregation */
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	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
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	ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
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	ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);
}

static void r8153_enter_oob(struct r8152 *tp)
{
	u32 ocp_data;
	int i;

	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);

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	rtl_disable(tp);
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	rtl_reset_bmu(tp);
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2935 2936 2937 2938 2939

	for (i = 0; i < 1000; i++) {
		ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
		if (ocp_data & LINK_LIST_READY)
			break;
H
hayeswang 已提交
2940
		usleep_range(1000, 2000);
H
hayeswang 已提交
2941 2942 2943 2944 2945 2946 2947 2948 2949 2950
	}

	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);

	for (i = 0; i < 1000; i++) {
		ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL);
		if (ocp_data & LINK_LIST_READY)
			break;
H
hayeswang 已提交
2951
		usleep_range(1000, 2000);
H
hayeswang 已提交
2952 2953
	}

2954
	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, RTL8153_RMS);
H
hayeswang 已提交
2955 2956 2957 2958 2959

	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);

H
hayeswang 已提交
2960
	rtl_rx_vlan_en(tp, true);
H
hayeswang 已提交
2961 2962 2963 2964 2965 2966 2967 2968 2969

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

H
hayeswang 已提交
2970
	rxdy_gated_en(tp, false);
H
hayeswang 已提交
2971 2972 2973 2974 2975 2976

	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);
}

H
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2977 2978
static void rtl8153_disable(struct r8152 *tp)
{
H
hayeswang 已提交
2979
	r8153_aldps_en(tp, false);
H
hayeswang 已提交
2980
	rtl_disable(tp);
H
hayeswang 已提交
2981
	rtl_reset_bmu(tp);
H
hayeswang 已提交
2982
	r8153_aldps_en(tp, true);
H
hayeswang 已提交
2983
	usb_enable_lpm(tp->udev);
H
hayeswang 已提交
2984 2985
}

H
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2986 2987
static int rtl8152_set_speed(struct r8152 *tp, u8 autoneg, u16 speed, u8 duplex)
{
H
hayeswang 已提交
2988
	u16 bmcr, anar, gbcr;
H
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2989 2990 2991 2992 2993
	int ret = 0;

	anar = r8152_mdio_read(tp, MII_ADVERTISE);
	anar &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
		  ADVERTISE_100HALF | ADVERTISE_100FULL);
H
hayeswang 已提交
2994 2995 2996 2997 2998 2999
	if (tp->mii.supports_gmii) {
		gbcr = r8152_mdio_read(tp, MII_CTRL1000);
		gbcr &= ~(ADVERTISE_1000FULL | ADVERTISE_1000HALF);
	} else {
		gbcr = 0;
	}
H
hayeswang 已提交
3000 3001 3002 3003 3004 3005 3006 3007

	if (autoneg == AUTONEG_DISABLE) {
		if (speed == SPEED_10) {
			bmcr = 0;
			anar |= ADVERTISE_10HALF | ADVERTISE_10FULL;
		} else if (speed == SPEED_100) {
			bmcr = BMCR_SPEED100;
			anar |= ADVERTISE_100HALF | ADVERTISE_100FULL;
H
hayeswang 已提交
3008 3009 3010
		} else if (speed == SPEED_1000 && tp->mii.supports_gmii) {
			bmcr = BMCR_SPEED1000;
			gbcr |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
H
hayeswang 已提交
3011 3012 3013 3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031
		} else {
			ret = -EINVAL;
			goto out;
		}

		if (duplex == DUPLEX_FULL)
			bmcr |= BMCR_FULLDPLX;
	} else {
		if (speed == SPEED_10) {
			if (duplex == DUPLEX_FULL)
				anar |= ADVERTISE_10HALF | ADVERTISE_10FULL;
			else
				anar |= ADVERTISE_10HALF;
		} else if (speed == SPEED_100) {
			if (duplex == DUPLEX_FULL) {
				anar |= ADVERTISE_10HALF | ADVERTISE_10FULL;
				anar |= ADVERTISE_100HALF | ADVERTISE_100FULL;
			} else {
				anar |= ADVERTISE_10HALF;
				anar |= ADVERTISE_100HALF;
			}
H
hayeswang 已提交
3032 3033 3034 3035 3036 3037 3038 3039 3040 3041
		} else if (speed == SPEED_1000 && tp->mii.supports_gmii) {
			if (duplex == DUPLEX_FULL) {
				anar |= ADVERTISE_10HALF | ADVERTISE_10FULL;
				anar |= ADVERTISE_100HALF | ADVERTISE_100FULL;
				gbcr |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
			} else {
				anar |= ADVERTISE_10HALF;
				anar |= ADVERTISE_100HALF;
				gbcr |= ADVERTISE_1000HALF;
			}
H
hayeswang 已提交
3042 3043 3044 3045 3046 3047 3048 3049
		} else {
			ret = -EINVAL;
			goto out;
		}

		bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
	}

3050
	if (test_and_clear_bit(PHY_RESET, &tp->flags))
3051 3052
		bmcr |= BMCR_RESET;

H
hayeswang 已提交
3053 3054 3055
	if (tp->mii.supports_gmii)
		r8152_mdio_write(tp, MII_CTRL1000, gbcr);

H
hayeswang 已提交
3056 3057 3058
	r8152_mdio_write(tp, MII_ADVERTISE, anar);
	r8152_mdio_write(tp, MII_BMCR, bmcr);

3059
	if (bmcr & BMCR_RESET) {
3060 3061 3062 3063 3064 3065 3066 3067 3068
		int i;

		for (i = 0; i < 50; i++) {
			msleep(20);
			if ((r8152_mdio_read(tp, MII_BMCR) & BMCR_RESET) == 0)
				break;
		}
	}

H
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3069 3070 3071 3072
out:
	return ret;
}

H
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3073 3074 3075 3076 3077
static void rtl8152_up(struct r8152 *tp)
{
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
3078
	r8152_aldps_en(tp, false);
H
hayeswang 已提交
3079
	r8152b_exit_oob(tp);
H
hayeswang 已提交
3080
	r8152_aldps_en(tp, true);
H
hayeswang 已提交
3081 3082
}

H
hayeswang 已提交
3083 3084
static void rtl8152_down(struct r8152 *tp)
{
H
hayeswang 已提交
3085 3086 3087 3088 3089
	if (test_bit(RTL8152_UNPLUG, &tp->flags)) {
		rtl_drop_queued_tx(tp);
		return;
	}

H
hayeswang 已提交
3090
	r8152_power_cut_en(tp, false);
H
hayeswang 已提交
3091
	r8152_aldps_en(tp, false);
H
hayeswang 已提交
3092
	r8152b_enter_oob(tp);
H
hayeswang 已提交
3093
	r8152_aldps_en(tp, true);
H
hayeswang 已提交
3094 3095
}

H
hayeswang 已提交
3096 3097 3098 3099 3100
static void rtl8153_up(struct r8152 *tp)
{
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
3101
	r8153_u1u2en(tp, false);
H
hayeswang 已提交
3102
	r8153_aldps_en(tp, false);
H
hayeswang 已提交
3103
	r8153_first_init(tp);
H
hayeswang 已提交
3104
	r8153_aldps_en(tp, true);
H
hayeswang 已提交
3105 3106 3107
	r8153_u2p3en(tp, true);
	r8153_u1u2en(tp, true);
	usb_enable_lpm(tp->udev);
H
hayeswang 已提交
3108 3109
}

H
hayeswang 已提交
3110 3111
static void rtl8153_down(struct r8152 *tp)
{
H
hayeswang 已提交
3112 3113 3114 3115 3116
	if (test_bit(RTL8152_UNPLUG, &tp->flags)) {
		rtl_drop_queued_tx(tp);
		return;
	}

3117
	r8153_u1u2en(tp, false);
H
hayeswang 已提交
3118
	r8153_u2p3en(tp, false);
3119
	r8153_power_cut_en(tp, false);
H
hayeswang 已提交
3120
	r8153_aldps_en(tp, false);
H
hayeswang 已提交
3121
	r8153_enter_oob(tp);
H
hayeswang 已提交
3122
	r8153_aldps_en(tp, true);
H
hayeswang 已提交
3123 3124
}

3125 3126 3127 3128 3129 3130 3131 3132 3133 3134 3135 3136 3137 3138 3139 3140 3141 3142 3143 3144 3145 3146 3147 3148 3149 3150
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;
}

H
hayeswang 已提交
3151 3152 3153 3154 3155 3156 3157 3158
static void set_carrier(struct r8152 *tp)
{
	struct net_device *netdev = tp->netdev;
	u8 speed;

	speed = rtl8152_get_speed(tp);

	if (speed & LINK_STATUS) {
3159
		if (!netif_carrier_ok(netdev)) {
H
hayeswang 已提交
3160
			tp->rtl_ops.enable(tp);
H
hayeswang 已提交
3161
			set_bit(RTL8152_SET_RX_MODE, &tp->flags);
3162
			netif_stop_queue(netdev);
3163
			napi_disable(&tp->napi);
H
hayeswang 已提交
3164
			netif_carrier_on(netdev);
3165
			rtl_start_rx(tp);
3166
			napi_enable(&tp->napi);
3167 3168
			netif_wake_queue(netdev);
			netif_info(tp, link, netdev, "carrier on\n");
H
hayeswang 已提交
3169 3170
		}
	} else {
3171
		if (netif_carrier_ok(netdev)) {
H
hayeswang 已提交
3172
			netif_carrier_off(netdev);
H
hayeswang 已提交
3173
			napi_disable(&tp->napi);
H
hayeswang 已提交
3174
			tp->rtl_ops.disable(tp);
H
hayeswang 已提交
3175
			napi_enable(&tp->napi);
3176
			netif_info(tp, link, netdev, "carrier off\n");
H
hayeswang 已提交
3177 3178 3179 3180 3181 3182 3183 3184
		}
	}
}

static void rtl_work_func_t(struct work_struct *work)
{
	struct r8152 *tp = container_of(work, struct r8152, schedule.work);

3185 3186 3187 3188 3189 3190
	/* 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_UNPLUG, &tp->flags) || !netif_running(tp->netdev))
		return;

H
hayeswang 已提交
3191 3192 3193
	if (usb_autopm_get_interface(tp->intf) < 0)
		return;

H
hayeswang 已提交
3194 3195 3196
	if (!test_bit(WORK_ENABLE, &tp->flags))
		goto out1;

H
hayeswang 已提交
3197 3198 3199 3200 3201
	if (!mutex_trylock(&tp->control)) {
		schedule_delayed_work(&tp->schedule, 0);
		goto out1;
	}

H
hayeswang 已提交
3202
	if (test_and_clear_bit(RTL8152_LINK_CHG, &tp->flags))
3203
		set_carrier(tp);
H
hayeswang 已提交
3204

H
hayeswang 已提交
3205
	if (test_and_clear_bit(RTL8152_SET_RX_MODE, &tp->flags))
H
hayeswang 已提交
3206 3207
		_rtl8152_set_rx_mode(tp->netdev);

H
hayeswang 已提交
3208
	/* don't schedule napi before linking */
H
hayeswang 已提交
3209 3210
	if (test_and_clear_bit(SCHEDULE_NAPI, &tp->flags) &&
	    netif_carrier_ok(tp->netdev))
H
hayeswang 已提交
3211
		napi_schedule(&tp->napi);
3212

H
hayeswang 已提交
3213 3214
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3215
out1:
H
hayeswang 已提交
3216
	usb_autopm_put_interface(tp->intf);
H
hayeswang 已提交
3217 3218
}

3219 3220 3221 3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232
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_UNPLUG, &tp->flags))
		return;

	if (usb_autopm_get_interface(tp->intf) < 0)
		return;

	mutex_lock(&tp->control);

	tp->rtl_ops.hw_phy_cfg(tp);

H
hayeswang 已提交
3233
	rtl8152_set_speed(tp, tp->autoneg, tp->speed, tp->duplex);
3234

3235 3236 3237 3238 3239
	mutex_unlock(&tp->control);

	usb_autopm_put_interface(tp->intf);
}

H
hayeswang 已提交
3240 3241 3242 3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266
#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

H
hayeswang 已提交
3267 3268 3269 3270 3271
static int rtl8152_open(struct net_device *netdev)
{
	struct r8152 *tp = netdev_priv(netdev);
	int res = 0;

3272 3273 3274 3275
	res = alloc_all_mem(tp);
	if (res)
		goto out;

H
hayeswang 已提交
3276
	res = usb_autopm_get_interface(tp->intf);
3277 3278
	if (res < 0)
		goto out_free;
H
hayeswang 已提交
3279

H
hayeswang 已提交
3280 3281
	mutex_lock(&tp->control);

3282 3283
	tp->rtl_ops.up(tp);

3284 3285 3286
	netif_carrier_off(netdev);
	netif_start_queue(netdev);
	set_bit(WORK_ENABLE, &tp->flags);
3287

3288 3289 3290 3291
	res = usb_submit_urb(tp->intr_urb, GFP_KERNEL);
	if (res) {
		if (res == -ENODEV)
			netif_device_detach(tp->netdev);
H
Hayes Wang 已提交
3292 3293
		netif_warn(tp, ifup, netdev, "intr_urb submit failed: %d\n",
			   res);
3294
		goto out_unlock;
H
hayeswang 已提交
3295
	}
3296
	napi_enable(&tp->napi);
H
hayeswang 已提交
3297

H
hayeswang 已提交
3298 3299
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3300
	usb_autopm_put_interface(tp->intf);
H
hayeswang 已提交
3301 3302 3303 3304
#ifdef CONFIG_PM_SLEEP
	tp->pm_notifier.notifier_call = rtl_notifier;
	register_pm_notifier(&tp->pm_notifier);
#endif
3305
	return 0;
H
hayeswang 已提交
3306

3307 3308 3309 3310 3311
out_unlock:
	mutex_unlock(&tp->control);
	usb_autopm_put_interface(tp->intf);
out_free:
	free_all_mem(tp);
3312
out:
H
hayeswang 已提交
3313 3314 3315 3316 3317 3318 3319 3320
	return res;
}

static int rtl8152_close(struct net_device *netdev)
{
	struct r8152 *tp = netdev_priv(netdev);
	int res = 0;

H
hayeswang 已提交
3321 3322 3323
#ifdef CONFIG_PM_SLEEP
	unregister_pm_notifier(&tp->pm_notifier);
#endif
H
hayeswang 已提交
3324
	napi_disable(&tp->napi);
H
hayeswang 已提交
3325
	clear_bit(WORK_ENABLE, &tp->flags);
3326
	usb_kill_urb(tp->intr_urb);
H
hayeswang 已提交
3327 3328
	cancel_delayed_work_sync(&tp->schedule);
	netif_stop_queue(netdev);
H
hayeswang 已提交
3329 3330

	res = usb_autopm_get_interface(tp->intf);
3331
	if (res < 0 || test_bit(RTL8152_UNPLUG, &tp->flags)) {
H
hayeswang 已提交
3332
		rtl_drop_queued_tx(tp);
H
hayeswang 已提交
3333
		rtl_stop_rx(tp);
H
hayeswang 已提交
3334
	} else {
H
hayeswang 已提交
3335 3336
		mutex_lock(&tp->control);

H
hayeswang 已提交
3337
		tp->rtl_ops.down(tp);
H
hayeswang 已提交
3338 3339 3340

		mutex_unlock(&tp->control);

H
hayeswang 已提交
3341 3342
		usb_autopm_put_interface(tp->intf);
	}
H
hayeswang 已提交
3343

3344 3345
	free_all_mem(tp);

H
hayeswang 已提交
3346 3347 3348
	return res;
}

3349 3350 3351 3352 3353 3354 3355 3356 3357
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);
}

H
hayeswang 已提交
3358 3359
static void r8152b_init(struct r8152 *tp)
{
H
hayeswang 已提交
3360
	u32 ocp_data;
H
hayeswang 已提交
3361
	u16 data;
H
hayeswang 已提交
3362

H
hayeswang 已提交
3363 3364 3365
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
3366 3367 3368 3369 3370 3371
	data = r8152_mdio_read(tp, MII_BMCR);
	if (data & BMCR_PDOWN) {
		data &= ~BMCR_PDOWN;
		r8152_mdio_write(tp, MII_BMCR, data);
	}

H
hayeswang 已提交
3372
	r8152_aldps_en(tp, false);
H
hayeswang 已提交
3373

H
hayeswang 已提交
3374 3375 3376 3377 3378 3379
	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);
	}

H
hayeswang 已提交
3380
	r8152_power_cut_en(tp, false);
H
hayeswang 已提交
3381 3382 3383 3384 3385 3386 3387 3388 3389 3390 3391 3392

	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);

3393
	rtl_tally_reset(tp);
H
hayeswang 已提交
3394

H
hayeswang 已提交
3395
	/* enable rx aggregation */
H
hayeswang 已提交
3396
	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
3397
	ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
H
hayeswang 已提交
3398 3399 3400
	ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);
}

H
hayeswang 已提交
3401 3402 3403
static void r8153_init(struct r8152 *tp)
{
	u32 ocp_data;
H
hayeswang 已提交
3404
	u16 data;
H
hayeswang 已提交
3405 3406
	int i;

H
hayeswang 已提交
3407 3408 3409
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

3410
	r8153_u1u2en(tp, false);
H
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3411 3412 3413 3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425

	for (i = 0; i < 500; i++) {
		if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_BOOT_CTRL) &
		    AUTOLOAD_DONE)
			break;
		msleep(20);
	}

	for (i = 0; i < 500; i++) {
		ocp_data = ocp_reg_read(tp, OCP_PHY_STATUS) & PHY_STAT_MASK;
		if (ocp_data == PHY_STAT_LAN_ON || ocp_data == PHY_STAT_PWRDN)
			break;
		msleep(20);
	}

H
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3426 3427 3428 3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442
	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);
	}

	for (i = 0; i < 500; i++) {
		ocp_data = ocp_reg_read(tp, OCP_PHY_STATUS) & PHY_STAT_MASK;
		if (ocp_data == PHY_STAT_LAN_ON)
			break;
		msleep(20);
	}

H
hayeswang 已提交
3443
	usb_disable_lpm(tp->udev);
3444
	r8153_u2p3en(tp, false);
H
hayeswang 已提交
3445

H
hayeswang 已提交
3446 3447 3448 3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459
	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);

H
hayeswang 已提交
3460 3461 3462 3463 3464 3465 3466
		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) {
H
hayeswang 已提交
3467 3468 3469 3470 3471 3472 3473 3474 3475 3476 3477 3478
		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);
	}

	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);

H
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3479 3480 3481 3482 3483 3484 3485 3486
	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);

H
hayeswang 已提交
3487
	ocp_data = FIFO_EMPTY_1FB | ROK_EXIT_LPM;
O
Oliver Neukum 已提交
3488
	if (tp->version == RTL_VER_04 && tp->udev->speed < USB_SPEED_SUPER)
H
hayeswang 已提交
3489
		ocp_data |= LPM_TIMER_500MS;
H
hayeswang 已提交
3490 3491
	else
		ocp_data |= LPM_TIMER_500US;
H
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3492 3493 3494 3495 3496 3497 3498
	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);

H
hayeswang 已提交
3499 3500
	ocp_write_word(tp, MCU_TYPE_USB, USB_CONNECT_TIMER, 0x0001);

3501 3502
	r8153_power_cut_en(tp, false);
	r8153_u1u2en(tp, true);
H
hayeswang 已提交
3503

H
hayeswang 已提交
3504 3505 3506 3507 3508
	/* MAC clock speed down */
	ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL, 0);
	ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, 0);
	ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, 0);
	ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, 0);
H
hayeswang 已提交
3509

3510
	rtl_tally_reset(tp);
H
hayeswang 已提交
3511
	r8153_u2p3en(tp, true);
H
hayeswang 已提交
3512 3513
}

H
hayeswang 已提交
3514 3515 3516 3517 3518 3519 3520 3521 3522 3523 3524 3525
static int rtl8152_pre_reset(struct usb_interface *intf)
{
	struct r8152 *tp = usb_get_intfdata(intf);
	struct net_device *netdev;

	if (!tp)
		return 0;

	netdev = tp->netdev;
	if (!netif_running(netdev))
		return 0;

3526
	netif_stop_queue(netdev);
H
hayeswang 已提交
3527 3528 3529 3530 3531 3532 3533 3534 3535 3536 3537 3538 3539 3540 3541 3542 3543 3544 3545 3546 3547 3548 3549 3550 3551 3552 3553 3554 3555
	napi_disable(&tp->napi);
	clear_bit(WORK_ENABLE, &tp->flags);
	usb_kill_urb(tp->intr_urb);
	cancel_delayed_work_sync(&tp->schedule);
	if (netif_carrier_ok(netdev)) {
		mutex_lock(&tp->control);
		tp->rtl_ops.disable(tp);
		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;

	if (!tp)
		return 0;

	netdev = tp->netdev;
	if (!netif_running(netdev))
		return 0;

	set_bit(WORK_ENABLE, &tp->flags);
	if (netif_carrier_ok(netdev)) {
		mutex_lock(&tp->control);
		tp->rtl_ops.enable(tp);
3556
		rtl_start_rx(tp);
H
hayeswang 已提交
3557 3558 3559 3560 3561
		rtl8152_set_rx_mode(netdev);
		mutex_unlock(&tp->control);
	}

	napi_enable(&tp->napi);
3562
	netif_wake_queue(netdev);
3563
	usb_submit_urb(tp->intr_urb, GFP_KERNEL);
H
hayeswang 已提交
3564

3565 3566
	if (!list_empty(&tp->rx_done))
		napi_schedule(&tp->napi);
H
hayeswang 已提交
3567 3568

	return 0;
H
hayeswang 已提交
3569 3570
}

3571 3572 3573 3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587
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;
3588 3589
	else if (!skb_queue_empty(&tp->tx_queue))
		return true;
3590 3591 3592 3593
	else
		return false;
}

H
hayeswang 已提交
3594
static int rtl8152_runtime_suspend(struct r8152 *tp)
H
hayeswang 已提交
3595
{
3596 3597
	struct net_device *netdev = tp->netdev;
	int ret = 0;
H
hayeswang 已提交
3598

3599 3600 3601
	set_bit(SELECTIVE_SUSPEND, &tp->flags);
	smp_mb__after_atomic();

3602
	if (netif_running(netdev) && test_bit(WORK_ENABLE, &tp->flags)) {
3603 3604
		u32 rcr = 0;

3605
		if (delay_autosuspend(tp)) {
3606 3607
			clear_bit(SELECTIVE_SUSPEND, &tp->flags);
			smp_mb__after_atomic();
3608 3609 3610 3611
			ret = -EBUSY;
			goto out1;
		}

3612 3613 3614 3615 3616 3617 3618 3619 3620 3621 3622 3623
		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);
3624 3625
				clear_bit(SELECTIVE_SUSPEND, &tp->flags);
				smp_mb__after_atomic();
3626 3627 3628 3629 3630
				ret = -EBUSY;
				goto out1;
			}
		}

3631 3632
		clear_bit(WORK_ENABLE, &tp->flags);
		usb_kill_urb(tp->intr_urb);
3633

3634
		tp->rtl_ops.autosuspend_en(tp, true);
3635 3636 3637 3638 3639 3640 3641 3642

		if (netif_carrier_ok(netdev)) {
			napi_disable(&tp->napi);
			rtl_stop_rx(tp);
			rxdy_gated_en(tp, false);
			ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, rcr);
			napi_enable(&tp->napi);
		}
3643
	}
H
hayeswang 已提交
3644

3645 3646 3647 3648 3649 3650 3651 3652 3653 3654 3655
out1:
	return ret;
}

static int rtl8152_system_suspend(struct r8152 *tp)
{
	struct net_device *netdev = tp->netdev;
	int ret = 0;

	netif_device_detach(netdev);

3656
	if (netif_running(netdev) && test_bit(WORK_ENABLE, &tp->flags)) {
H
hayeswang 已提交
3657
		clear_bit(WORK_ENABLE, &tp->flags);
3658
		usb_kill_urb(tp->intr_urb);
H
hayeswang 已提交
3659
		napi_disable(&tp->napi);
3660 3661
		cancel_delayed_work_sync(&tp->schedule);
		tp->rtl_ops.down(tp);
H
hayeswang 已提交
3662
		napi_enable(&tp->napi);
H
hayeswang 已提交
3663
	}
3664 3665 3666 3667 3668 3669 3670 3671 3672 3673 3674 3675

	return ret;
}

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))
H
hayeswang 已提交
3676
		ret = rtl8152_runtime_suspend(tp);
3677 3678 3679
	else
		ret = rtl8152_system_suspend(tp);

H
hayeswang 已提交
3680 3681
	mutex_unlock(&tp->control);

3682
	return ret;
H
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3683 3684 3685 3686 3687 3688
}

static int rtl8152_resume(struct usb_interface *intf)
{
	struct r8152 *tp = usb_get_intfdata(intf);

H
hayeswang 已提交
3689 3690
	mutex_lock(&tp->control);

H
hayeswang 已提交
3691 3692
	if (!test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
		tp->rtl_ops.init(tp);
3693
		queue_delayed_work(system_long_wq, &tp->hw_phy_work, 0);
H
hayeswang 已提交
3694 3695 3696
		netif_device_attach(tp->netdev);
	}

3697
	if (netif_running(tp->netdev) && tp->netdev->flags & IFF_UP) {
H
hayeswang 已提交
3698
		if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
3699
			tp->rtl_ops.autosuspend_en(tp, false);
3700
			napi_disable(&tp->napi);
3701
			set_bit(WORK_ENABLE, &tp->flags);
3702
			if (netif_carrier_ok(tp->netdev))
3703
				rtl_start_rx(tp);
3704
			napi_enable(&tp->napi);
3705 3706
			clear_bit(SELECTIVE_SUSPEND, &tp->flags);
			smp_mb__after_atomic();
3707 3708
			if (!list_empty(&tp->rx_done))
				napi_schedule(&tp->napi);
H
hayeswang 已提交
3709 3710
		} else {
			tp->rtl_ops.up(tp);
3711 3712
			netif_carrier_off(tp->netdev);
			set_bit(WORK_ENABLE, &tp->flags);
H
hayeswang 已提交
3713
		}
3714
		usb_submit_urb(tp->intr_urb, GFP_KERNEL);
3715
	} else if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
3716
		if (tp->netdev->flags & IFF_UP)
3717
			tp->rtl_ops.autosuspend_en(tp, false);
3718
		clear_bit(SELECTIVE_SUSPEND, &tp->flags);
H
hayeswang 已提交
3719 3720
	}

H
hayeswang 已提交
3721 3722
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3723 3724 3725
	return 0;
}

H
hayeswang 已提交
3726 3727 3728 3729 3730 3731 3732 3733
static int rtl8152_reset_resume(struct usb_interface *intf)
{
	struct r8152 *tp = usb_get_intfdata(intf);

	clear_bit(SELECTIVE_SUSPEND, &tp->flags);
	return rtl8152_resume(intf);
}

H
hayeswang 已提交
3734 3735 3736 3737
static void rtl8152_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct r8152 *tp = netdev_priv(dev);

H
hayeswang 已提交
3738 3739 3740
	if (usb_autopm_get_interface(tp->intf) < 0)
		return;

H
hayeswang 已提交
3741 3742 3743 3744 3745 3746 3747 3748 3749
	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);
	}
H
hayeswang 已提交
3750

H
hayeswang 已提交
3751
	usb_autopm_put_interface(tp->intf);
H
hayeswang 已提交
3752 3753 3754 3755 3756
}

static int rtl8152_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct r8152 *tp = netdev_priv(dev);
H
hayeswang 已提交
3757 3758
	int ret;

H
hayeswang 已提交
3759 3760 3761
	if (!rtl_can_wakeup(tp))
		return -EOPNOTSUPP;

H
hayeswang 已提交
3762 3763 3764
	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		goto out_set_wol;
H
hayeswang 已提交
3765

H
hayeswang 已提交
3766 3767
	mutex_lock(&tp->control);

H
hayeswang 已提交
3768 3769 3770
	__rtl_set_wol(tp, wol->wolopts);
	tp->saved_wolopts = wol->wolopts & WAKE_ANY;

H
hayeswang 已提交
3771 3772
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3773 3774 3775 3776
	usb_autopm_put_interface(tp->intf);

out_set_wol:
	return ret;
H
hayeswang 已提交
3777 3778
}

3779 3780 3781 3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792
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;
}

H
hayeswang 已提交
3793 3794 3795 3796 3797
static void rtl8152_get_drvinfo(struct net_device *netdev,
				struct ethtool_drvinfo *info)
{
	struct r8152 *tp = netdev_priv(netdev);

H
hayeswang 已提交
3798 3799
	strlcpy(info->driver, MODULENAME, sizeof(info->driver));
	strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
H
hayeswang 已提交
3800 3801 3802 3803 3804 3805 3806
	usb_make_path(tp->udev, info->bus_info, sizeof(info->bus_info));
}

static
int rtl8152_get_settings(struct net_device *netdev, struct ethtool_cmd *cmd)
{
	struct r8152 *tp = netdev_priv(netdev);
H
hayeswang 已提交
3807
	int ret;
H
hayeswang 已提交
3808 3809 3810 3811

	if (!tp->mii.mdio_read)
		return -EOPNOTSUPP;

H
hayeswang 已提交
3812 3813 3814 3815
	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		goto out;

H
hayeswang 已提交
3816 3817
	mutex_lock(&tp->control);

H
hayeswang 已提交
3818 3819
	ret = mii_ethtool_gset(&tp->mii, cmd);

H
hayeswang 已提交
3820 3821
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3822 3823 3824 3825
	usb_autopm_put_interface(tp->intf);

out:
	return ret;
H
hayeswang 已提交
3826 3827 3828 3829 3830
}

static int rtl8152_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct r8152 *tp = netdev_priv(dev);
H
hayeswang 已提交
3831 3832 3833 3834 3835
	int ret;

	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		goto out;
H
hayeswang 已提交
3836

H
hayeswang 已提交
3837 3838
	mutex_lock(&tp->control);

H
hayeswang 已提交
3839
	ret = rtl8152_set_speed(tp, cmd->autoneg, cmd->speed, cmd->duplex);
H
hayeswang 已提交
3840 3841 3842 3843 3844
	if (!ret) {
		tp->autoneg = cmd->autoneg;
		tp->speed = cmd->speed;
		tp->duplex = cmd->duplex;
	}
H
hayeswang 已提交
3845

H
hayeswang 已提交
3846 3847
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3848 3849 3850 3851
	usb_autopm_put_interface(tp->intf);

out:
	return ret;
H
hayeswang 已提交
3852 3853
}

3854 3855 3856 3857 3858 3859 3860 3861 3862 3863 3864 3865 3866 3867 3868 3869 3870 3871 3872 3873 3874 3875 3876 3877 3878 3879 3880 3881 3882 3883 3884 3885
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;

3886 3887 3888
	if (usb_autopm_get_interface(tp->intf) < 0)
		return;

3889 3890
	generic_ocp_read(tp, PLA_TALLYCNT, sizeof(tally), &tally, MCU_TYPE_PLA);

3891 3892
	usb_autopm_put_interface(tp->intf);

3893 3894 3895 3896 3897 3898 3899 3900 3901 3902 3903 3904
	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);
H
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3905
	data[12] = le16_to_cpu(tally.tx_underrun);
3906 3907 3908 3909 3910 3911 3912 3913 3914 3915 3916
}

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;
	}
}

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3917 3918 3919 3920 3921 3922 3923 3924 3925 3926 3927 3928 3929 3930 3931 3932 3933 3934 3935 3936 3937 3938 3939 3940 3941 3942 3943 3944 3945 3946 3947 3948 3949 3950 3951 3952 3953 3954 3955 3956 3957 3958 3959 3960 3961 3962 3963 3964 3965 3966 3967 3968 3969 3970 3971 3972 3973 3974 3975 3976 3977 3978 3979 3980 3981 3982 3983 3984 3985 3986 3987 3988 3989 3990 3991 3992 3993 3994 3995 3996 3997 3998 3999 4000 4001 4002 4003 4004 4005 4006
static int r8152_get_eee(struct r8152 *tp, struct ethtool_eee *eee)
{
	u32 ocp_data, lp, adv, supported = 0;
	u16 val;

	val = r8152_mmd_read(tp, MDIO_MMD_PCS, MDIO_PCS_EEE_ABLE);
	supported = mmd_eee_cap_to_ethtool_sup_t(val);

	val = r8152_mmd_read(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV);
	adv = mmd_eee_adv_to_ethtool_adv_t(val);

	val = r8152_mmd_read(tp, MDIO_MMD_AN, MDIO_AN_EEE_LPABLE);
	lp = mmd_eee_adv_to_ethtool_adv_t(val);

	ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEE_CR);
	ocp_data &= EEE_RX_EN | EEE_TX_EN;

	eee->eee_enabled = !!ocp_data;
	eee->eee_active = !!(supported & adv & lp);
	eee->supported = supported;
	eee->advertised = adv;
	eee->lp_advertised = lp;

	return 0;
}

static int r8152_set_eee(struct r8152 *tp, struct ethtool_eee *eee)
{
	u16 val = ethtool_adv_to_mmd_eee_adv_t(eee->advertised);

	r8152_eee_en(tp, eee->eee_enabled);

	if (!eee->eee_enabled)
		val = 0;

	r8152_mmd_write(tp, MDIO_MMD_AN, MDIO_AN_EEE_ADV, val);

	return 0;
}

static int r8153_get_eee(struct r8152 *tp, struct ethtool_eee *eee)
{
	u32 ocp_data, lp, adv, supported = 0;
	u16 val;

	val = ocp_reg_read(tp, OCP_EEE_ABLE);
	supported = mmd_eee_cap_to_ethtool_sup_t(val);

	val = ocp_reg_read(tp, OCP_EEE_ADV);
	adv = mmd_eee_adv_to_ethtool_adv_t(val);

	val = ocp_reg_read(tp, OCP_EEE_LPABLE);
	lp = mmd_eee_adv_to_ethtool_adv_t(val);

	ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEE_CR);
	ocp_data &= EEE_RX_EN | EEE_TX_EN;

	eee->eee_enabled = !!ocp_data;
	eee->eee_active = !!(supported & adv & lp);
	eee->supported = supported;
	eee->advertised = adv;
	eee->lp_advertised = lp;

	return 0;
}

static int r8153_set_eee(struct r8152 *tp, struct ethtool_eee *eee)
{
	u16 val = ethtool_adv_to_mmd_eee_adv_t(eee->advertised);

	r8153_eee_en(tp, eee->eee_enabled);

	if (!eee->eee_enabled)
		val = 0;

	ocp_reg_write(tp, OCP_EEE_ADV, val);

	return 0;
}

static int
rtl_ethtool_get_eee(struct net_device *net, struct ethtool_eee *edata)
{
	struct r8152 *tp = netdev_priv(net);
	int ret;

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

H
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4007 4008
	mutex_lock(&tp->control);

H
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4009 4010
	ret = tp->rtl_ops.eee_get(tp, edata);

H
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4011 4012
	mutex_unlock(&tp->control);

H
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4013 4014 4015 4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028
	usb_autopm_put_interface(tp->intf);

out:
	return ret;
}

static int
rtl_ethtool_set_eee(struct net_device *net, struct ethtool_eee *edata)
{
	struct r8152 *tp = netdev_priv(net);
	int ret;

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

H
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4029 4030
	mutex_lock(&tp->control);

H
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4031
	ret = tp->rtl_ops.eee_set(tp, edata);
H
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4032 4033
	if (!ret)
		ret = mii_nway_restart(&tp->mii);
H
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4034

H
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4035 4036
	mutex_unlock(&tp->control);

H
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4037 4038 4039 4040 4041 4042
	usb_autopm_put_interface(tp->intf);

out:
	return ret;
}

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4043 4044 4045 4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063
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;
}

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4064 4065 4066 4067 4068 4069 4070 4071 4072 4073 4074 4075 4076 4077 4078 4079 4080 4081 4082 4083 4084 4085 4086 4087 4088 4089 4090 4091 4092 4093 4094 4095 4096 4097 4098 4099 4100 4101 4102 4103 4104 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116 4117 4118
static int rtl8152_get_coalesce(struct net_device *netdev,
				struct ethtool_coalesce *coalesce)
{
	struct r8152 *tp = netdev_priv(netdev);

	switch (tp->version) {
	case RTL_VER_01:
	case RTL_VER_02:
		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 r8152 *tp = netdev_priv(netdev);
	int ret;

	switch (tp->version) {
	case RTL_VER_01:
	case RTL_VER_02:
		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(tp->netdev) && netif_carrier_ok(netdev))
			r8153_set_rx_early_timeout(tp);
	}

	mutex_unlock(&tp->control);

	usb_autopm_put_interface(tp->intf);

	return ret;
}

4119
static const struct ethtool_ops ops = {
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4120 4121 4122 4123
	.get_drvinfo = rtl8152_get_drvinfo,
	.get_settings = rtl8152_get_settings,
	.set_settings = rtl8152_set_settings,
	.get_link = ethtool_op_get_link,
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4124
	.nway_reset = rtl8152_nway_reset,
4125 4126
	.get_msglevel = rtl8152_get_msglevel,
	.set_msglevel = rtl8152_set_msglevel,
H
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4127 4128
	.get_wol = rtl8152_get_wol,
	.set_wol = rtl8152_set_wol,
4129 4130 4131
	.get_strings = rtl8152_get_strings,
	.get_sset_count = rtl8152_get_sset_count,
	.get_ethtool_stats = rtl8152_get_ethtool_stats,
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4132 4133
	.get_coalesce = rtl8152_get_coalesce,
	.set_coalesce = rtl8152_set_coalesce,
H
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4134 4135
	.get_eee = rtl_ethtool_get_eee,
	.set_eee = rtl_ethtool_set_eee,
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4136 4137 4138 4139 4140 4141
};

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);
H
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4142 4143
	int res;

H
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4144 4145 4146
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return -ENODEV;

H
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4147 4148 4149
	res = usb_autopm_get_interface(tp->intf);
	if (res < 0)
		goto out;
H
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4150 4151 4152 4153 4154 4155 4156

	switch (cmd) {
	case SIOCGMIIPHY:
		data->phy_id = R8152_PHY_ID; /* Internal PHY */
		break;

	case SIOCGMIIREG:
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4157
		mutex_lock(&tp->control);
H
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4158
		data->val_out = r8152_mdio_read(tp, data->reg_num);
H
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4159
		mutex_unlock(&tp->control);
H
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4160 4161 4162 4163 4164 4165 4166
		break;

	case SIOCSMIIREG:
		if (!capable(CAP_NET_ADMIN)) {
			res = -EPERM;
			break;
		}
H
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4167
		mutex_lock(&tp->control);
H
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4168
		r8152_mdio_write(tp, data->reg_num, data->val_in);
H
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4169
		mutex_unlock(&tp->control);
H
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4170 4171 4172 4173 4174 4175
		break;

	default:
		res = -EOPNOTSUPP;
	}

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4176 4177 4178
	usb_autopm_put_interface(tp->intf);

out:
H
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4179 4180 4181
	return res;
}

4182 4183 4184
static int rtl8152_change_mtu(struct net_device *dev, int new_mtu)
{
	struct r8152 *tp = netdev_priv(dev);
4185
	int ret;
4186 4187 4188 4189

	switch (tp->version) {
	case RTL_VER_01:
	case RTL_VER_02:
4190 4191
		dev->mtu = new_mtu;
		return 0;
4192 4193 4194 4195
	default:
		break;
	}

4196 4197 4198 4199 4200 4201
	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		return ret;

	mutex_lock(&tp->control);

4202 4203
	dev->mtu = new_mtu;

4204 4205 4206 4207 4208 4209 4210 4211
	if (netif_running(dev) && netif_carrier_ok(dev))
		r8153_set_rx_early_size(tp);

	mutex_unlock(&tp->control);

	usb_autopm_put_interface(tp->intf);

	return ret;
4212 4213
}

H
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4214 4215 4216 4217 4218 4219
static const struct net_device_ops rtl8152_netdev_ops = {
	.ndo_open		= rtl8152_open,
	.ndo_stop		= rtl8152_close,
	.ndo_do_ioctl		= rtl8152_ioctl,
	.ndo_start_xmit		= rtl8152_start_xmit,
	.ndo_tx_timeout		= rtl8152_tx_timeout,
H
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4220
	.ndo_set_features	= rtl8152_set_features,
H
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4221 4222
	.ndo_set_rx_mode	= rtl8152_set_rx_mode,
	.ndo_set_mac_address	= rtl8152_set_mac_address,
4223
	.ndo_change_mtu		= rtl8152_change_mtu,
H
hayeswang 已提交
4224
	.ndo_validate_addr	= eth_validate_addr,
H
hayeswang 已提交
4225
	.ndo_features_check	= rtl8152_features_check,
H
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4226 4227 4228 4229 4230 4231 4232 4233 4234 4235 4236 4237 4238 4239 4240 4241 4242
};

static void r8152b_get_version(struct r8152 *tp)
{
	u32	ocp_data;
	u16	version;

	ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR1);
	version = (u16)(ocp_data & VERSION_MASK);

	switch (version) {
	case 0x4c00:
		tp->version = RTL_VER_01;
		break;
	case 0x4c10:
		tp->version = RTL_VER_02;
		break;
H
hayeswang 已提交
4243 4244 4245 4246 4247 4248 4249 4250 4251 4252 4253 4254
	case 0x5c00:
		tp->version = RTL_VER_03;
		tp->mii.supports_gmii = 1;
		break;
	case 0x5c10:
		tp->version = RTL_VER_04;
		tp->mii.supports_gmii = 1;
		break;
	case 0x5c20:
		tp->version = RTL_VER_05;
		tp->mii.supports_gmii = 1;
		break;
H
hayeswang 已提交
4255 4256 4257 4258
	case 0x5c30:
		tp->version = RTL_VER_06;
		tp->mii.supports_gmii = 1;
		break;
H
hayeswang 已提交
4259 4260 4261 4262 4263 4264 4265
	default:
		netif_info(tp, probe, tp->netdev,
			   "Unknown version 0x%04x\n", version);
		break;
	}
}

4266 4267
static void rtl8152_unload(struct r8152 *tp)
{
H
hayeswang 已提交
4268 4269 4270
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
4271 4272
	if (tp->version != RTL_VER_01)
		r8152_power_cut_en(tp, true);
4273 4274
}

H
hayeswang 已提交
4275 4276
static void rtl8153_unload(struct r8152 *tp)
{
H
hayeswang 已提交
4277 4278 4279
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
4280
	r8153_power_cut_en(tp, false);
H
hayeswang 已提交
4281 4282
}

H
hayeswang 已提交
4283
static int rtl_ops_init(struct r8152 *tp)
H
hayeswang 已提交
4284 4285
{
	struct rtl_ops *ops = &tp->rtl_ops;
H
hayeswang 已提交
4286 4287 4288 4289 4290 4291 4292 4293 4294 4295 4296 4297 4298
	int ret = 0;

	switch (tp->version) {
	case RTL_VER_01:
	case RTL_VER_02:
		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;
4299
		ops->in_nway		= rtl8152_in_nway;
4300
		ops->hw_phy_cfg		= r8152b_hw_phy_cfg;
4301
		ops->autosuspend_en	= rtl_runtime_suspend_enable;
H
hayeswang 已提交
4302 4303
		break;

H
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4304 4305 4306
	case RTL_VER_03:
	case RTL_VER_04:
	case RTL_VER_05:
H
hayeswang 已提交
4307
	case RTL_VER_06:
H
hayeswang 已提交
4308 4309 4310 4311 4312 4313 4314 4315
		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		= r8153_set_eee;
4316
		ops->in_nway		= rtl8153_in_nway;
4317
		ops->hw_phy_cfg		= r8153_hw_phy_cfg;
4318
		ops->autosuspend_en	= rtl8153_runtime_enable;
H
hayeswang 已提交
4319 4320 4321
		break;

	default:
H
hayeswang 已提交
4322 4323
		ret = -ENODEV;
		netif_err(tp, probe, tp->netdev, "Unknown Device\n");
H
hayeswang 已提交
4324 4325 4326 4327 4328 4329
		break;
	}

	return ret;
}

H
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4330 4331 4332 4333 4334 4335
static int rtl8152_probe(struct usb_interface *intf,
			 const struct usb_device_id *id)
{
	struct usb_device *udev = interface_to_usbdev(intf);
	struct r8152 *tp;
	struct net_device *netdev;
H
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4336
	int ret;
H
hayeswang 已提交
4337

H
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4338 4339 4340 4341 4342 4343
	if (udev->actconfig->desc.bConfigurationValue != 1) {
		usb_driver_set_configuration(udev, 1);
		return -ENODEV;
	}

	usb_reset_device(udev);
H
hayeswang 已提交
4344 4345
	netdev = alloc_etherdev(sizeof(struct r8152));
	if (!netdev) {
H
Hayes Wang 已提交
4346
		dev_err(&intf->dev, "Out of memory\n");
H
hayeswang 已提交
4347 4348 4349
		return -ENOMEM;
	}

H
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4350
	SET_NETDEV_DEV(netdev, &intf->dev);
H
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4351 4352 4353
	tp = netdev_priv(netdev);
	tp->msg_enable = 0x7FFF;

4354 4355 4356 4357
	tp->udev = udev;
	tp->netdev = netdev;
	tp->intf = intf;

H
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4358
	r8152b_get_version(tp);
H
hayeswang 已提交
4359
	ret = rtl_ops_init(tp);
4360 4361
	if (ret)
		goto out;
H
hayeswang 已提交
4362

H
hayeswang 已提交
4363
	mutex_init(&tp->control);
H
hayeswang 已提交
4364
	INIT_DELAYED_WORK(&tp->schedule, rtl_work_func_t);
4365
	INIT_DELAYED_WORK(&tp->hw_phy_work, rtl_hw_phy_work_func_t);
H
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4366 4367 4368

	netdev->netdev_ops = &rtl8152_netdev_ops;
	netdev->watchdog_timeo = RTL8152_TX_TIMEOUT;
H
hayeswang 已提交
4369

H
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4370
	netdev->features |= NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_SG |
H
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4371
			    NETIF_F_TSO | NETIF_F_FRAGLIST | NETIF_F_IPV6_CSUM |
H
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4372 4373
			    NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_RX |
			    NETIF_F_HW_VLAN_CTAG_TX;
H
hayeswang 已提交
4374
	netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_SG |
H
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4375
			      NETIF_F_TSO | NETIF_F_FRAGLIST |
H
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4376
			      NETIF_F_IPV6_CSUM | NETIF_F_TSO6 |
4377
			      NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX;
H
hayeswang 已提交
4378 4379 4380
	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;
4381

4382 4383 4384 4385 4386
	if (tp->version == RTL_VER_01) {
		netdev->features &= ~NETIF_F_RXCSUM;
		netdev->hw_features &= ~NETIF_F_RXCSUM;
	}

4387
	netdev->ethtool_ops = &ops;
H
hayeswang 已提交
4388
	netif_set_gso_max_size(netdev, RTL_LIMITED_TSO_SIZE);
H
hayeswang 已提交
4389

4390 4391 4392 4393 4394 4395 4396 4397 4398 4399 4400 4401
	/* MTU range: 68 - 1500 or 9194 */
	netdev->min_mtu = ETH_MIN_MTU;
	switch (tp->version) {
	case RTL_VER_01:
	case RTL_VER_02:
		netdev->max_mtu = ETH_DATA_LEN;
		break;
	default:
		netdev->max_mtu = RTL8153_MAX_MTU;
		break;
	}

H
hayeswang 已提交
4402 4403 4404 4405 4406 4407 4408
	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;

H
hayeswang 已提交
4409 4410
	switch (udev->speed) {
	case USB_SPEED_SUPER:
O
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4411
	case USB_SPEED_SUPER_PLUS:
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		tp->coalesce = COALESCE_SUPER;
		break;
	case USB_SPEED_HIGH:
		tp->coalesce = COALESCE_HIGH;
		break;
	default:
		tp->coalesce = COALESCE_SLOW;
		break;
	}

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	tp->autoneg = AUTONEG_ENABLE;
	tp->speed = tp->mii.supports_gmii ? SPEED_1000 : SPEED_100;
	tp->duplex = DUPLEX_FULL;

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	intf->needs_remote_wakeup = 1;

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4428
	tp->rtl_ops.init(tp);
4429
	queue_delayed_work(system_long_wq, &tp->hw_phy_work, 0);
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	set_ethernet_addr(tp);

	usb_set_intfdata(intf, tp);
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4433
	netif_napi_add(netdev, &tp->napi, r8152_poll, RTL8152_NAPI_WEIGHT);
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	ret = register_netdev(netdev);
	if (ret != 0) {
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4437
		netif_err(tp, probe, netdev, "couldn't register the device\n");
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4438
		goto out1;
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4439 4440
	}

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	if (!rtl_can_wakeup(tp))
		__rtl_set_wol(tp, 0);

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	tp->saved_wolopts = __rtl_get_wol(tp);
	if (tp->saved_wolopts)
		device_set_wakeup_enable(&udev->dev, true);
	else
		device_set_wakeup_enable(&udev->dev, false);

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	netif_info(tp, probe, netdev, "%s\n", DRIVER_VERSION);
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4451 4452 4453 4454

	return 0;

out1:
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4455
	netif_napi_del(&tp->napi);
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4456
	usb_set_intfdata(intf, NULL);
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out:
	free_netdev(netdev);
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4459
	return ret;
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}

static void rtl8152_disconnect(struct usb_interface *intf)
{
	struct r8152 *tp = usb_get_intfdata(intf);

	usb_set_intfdata(intf, NULL);
	if (tp) {
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		struct usb_device *udev = tp->udev;

		if (udev->state == USB_STATE_NOTATTACHED)
			set_bit(RTL8152_UNPLUG, &tp->flags);

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4473
		netif_napi_del(&tp->napi);
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4474
		unregister_netdev(tp->netdev);
4475
		cancel_delayed_work_sync(&tp->hw_phy_work);
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4476
		tp->rtl_ops.unload(tp);
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		free_netdev(tp->netdev);
	}
}

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4481 4482 4483 4484 4485 4486 4487 4488 4489 4490 4491 4492 4493 4494 4495 4496
#define REALTEK_USB_DEVICE(vend, prod)	\
	.match_flags = USB_DEVICE_ID_MATCH_DEVICE | \
		       USB_DEVICE_ID_MATCH_INT_CLASS, \
	.idVendor = (vend), \
	.idProduct = (prod), \
	.bInterfaceClass = USB_CLASS_VENDOR_SPEC \
}, \
{ \
	.match_flags = USB_DEVICE_ID_MATCH_INT_INFO | \
		       USB_DEVICE_ID_MATCH_DEVICE, \
	.idVendor = (vend), \
	.idProduct = (prod), \
	.bInterfaceClass = USB_CLASS_COMM, \
	.bInterfaceSubClass = USB_CDC_SUBCLASS_ETHERNET, \
	.bInterfaceProtocol = USB_CDC_PROTO_NONE

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/* table of devices that work with this driver */
static struct usb_device_id rtl8152_table[] = {
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	{REALTEK_USB_DEVICE(VENDOR_ID_REALTEK, 0x8152)},
	{REALTEK_USB_DEVICE(VENDOR_ID_REALTEK, 0x8153)},
	{REALTEK_USB_DEVICE(VENDOR_ID_SAMSUNG, 0xa101)},
4502
	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x304f)},
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	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3062)},
	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x3069)},
	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x7205)},
	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x720c)},
	{REALTEK_USB_DEVICE(VENDOR_ID_LENOVO,  0x7214)},
4508
	{REALTEK_USB_DEVICE(VENDOR_ID_NVIDIA,  0x09ff)},
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	{}
};

MODULE_DEVICE_TABLE(usb, rtl8152_table);

static struct usb_driver rtl8152_driver = {
	.name =		MODULENAME,
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4516
	.id_table =	rtl8152_table,
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4517 4518 4519
	.probe =	rtl8152_probe,
	.disconnect =	rtl8152_disconnect,
	.suspend =	rtl8152_suspend,
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4520
	.resume =	rtl8152_resume,
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4521
	.reset_resume =	rtl8152_reset_resume,
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4522 4523
	.pre_reset =	rtl8152_pre_reset,
	.post_reset =	rtl8152_post_reset,
H
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4524
	.supports_autosuspend = 1,
H
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4525
	.disable_hub_initiated_lpm = 1,
H
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4526 4527
};

4528
module_usb_driver(rtl8152_driver);
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4529 4530 4531 4532

MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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4533
MODULE_VERSION(DRIVER_VERSION);