r8152.c 103.8 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		"9"
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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
504 505
#define rx_reserved_size(x)	((x) + VLAN_ETH_HLEN + CRC_SIZE + \
				 sizeof(struct rx_desc) + RX_ALIGN)
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/* rtl8152 flags */
enum rtl8152_flags {
	RTL8152_UNPLUG = 0,
	RTL8152_SET_RX_MODE,
511 512
	WORK_ENABLE,
	RTL8152_LINK_CHG,
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	SELECTIVE_SUSPEND,
514
	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
521
#define VENDOR_ID_LENOVO		0x17ef
522
#define VENDOR_ID_NVIDIA		0x0955
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#define MCU_TYPE_PLA			0x0100
#define MCU_TYPE_USB			0x0000

527 528 529 530 531 532 533 534 535 536 537 538 539
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;
541 542
};

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struct rx_desc {
544
	__le32 opts1;
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#define RX_LEN_MASK			0x7fff
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547
	__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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553
	__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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559 560 561
	__le32 opts4;
	__le32 opts5;
	__le32 opts6;
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};

struct tx_desc {
565
	__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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574
	__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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};

586 587
struct r8152;

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struct rx_agg {
	struct list_head list;
	struct urb *urb;
591
	struct r8152 *context;
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	void *buffer;
	void *head;
};

struct tx_agg {
	struct list_head list;
	struct urb *urb;
599
	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;
610
	struct usb_interface *intf;
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	struct net_device *netdev;
612
	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;
618
	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 *);
629
		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 *);
634
		bool (*in_nway)(struct r8152 *);
635
		void (*hw_phy_cfg)(struct r8152 *);
636
		void (*autosuspend_en)(struct r8152 *tp, bool enable);
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	} rtl_ops;

639
	int intr_interval;
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	u32 saved_wolopts;
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	u32 msg_enable;
642
	u32 tx_qlen;
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	u32 coalesce;
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	u16 ocp_base;
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	u16 speed;
646
	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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674

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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)
{
681 682 683 684 685 686 687 688
	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);
691 692 693 694 695

	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)
{
701 702 703
	int ret;
	void *tmp;

704
	tmp = kmemdup(data, size, GFP_KERNEL);
705 706 707 708
	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);
711 712

	kfree(tmp);
713

714
	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;
		}
	}

754 755 756
	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:
824 825 826
	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)
{
856
	__le32 data;
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858
	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)
{
865 866 867
	__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;
873
	__le32 tmp;
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	u8 shift = index & 2;

	index &= ~3;

878
	generic_ocp_read(tp, index, sizeof(tmp), &tmp, type);
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880
	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)
{
889 890
	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;
	}

903
	tmp = __cpu_to_le32(data);
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905
	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;
911
	__le32 tmp;
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	u8 shift = index & 3;

	index &= ~3;

916
	generic_ocp_read(tp, index, sizeof(tmp), &tmp, type);
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918
	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)
{
927 928
	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;
	}

941
	tmp = __cpu_to_le32(data);
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943
	generic_ocp_write(tp, index, byen, sizeof(tmp), &tmp, type);
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}

946
static u16 ocp_reg_read(struct r8152 *tp, u16 addr)
947 948 949 950 951 952 953 954 955 956
{
	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;
957
	return ocp_read_word(tp, MCU_TYPE_PLA, ocp_index);
958 959
}

960
static void ocp_reg_write(struct r8152 *tp, u16 addr, u16 data)
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{
962
	u16 ocp_base, ocp_index;
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964 965 966 967
	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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	}
969 970 971

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

974
static inline void r8152_mdio_write(struct r8152 *tp, u32 reg_addr, u32 value)
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{
976 977
	ocp_reg_write(tp, OCP_BASE_MII + reg_addr * 2, value);
}
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979 980 981
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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1023 1024 1025 1026
static int rtl8152_set_mac_address(struct net_device *netdev, void *p)
{
	struct r8152 *tp = netdev_priv(netdev);
	struct sockaddr *addr = p;
1027
	int ret = -EADDRNOTAVAIL;
1028 1029

	if (!is_valid_ether_addr(addr->sa_data))
1030 1031 1032 1033 1034
		goto out1;

	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		goto out1;
1035

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	mutex_lock(&tp->control);

1038 1039 1040 1041 1042 1043
	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);

1046 1047 1048
	usb_autopm_put_interface(tp->intf);
out1:
	return ret;
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 1079 1080
/* 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,
1081
			   "Invalid buffer for pass-thru MAC addr: (%d, %d)\n",
1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093
			   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,
1094 1095
			   "Invalid MAC for pass-thru MAC addr: %d, %pM\n",
			   ret, buf);
1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108
		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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1110 1111
{
	struct net_device *dev = tp->netdev;
H
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1112
	struct sockaddr sa;
H
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1113
	int ret;
H
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1114

1115
	if (tp->version == RTL_VER_01) {
H
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		ret = pla_ocp_read(tp, PLA_IDR, 8, sa.sa_data);
1117
	} else {
1118 1119 1120 1121 1122 1123 1124 1125
		/* 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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1126 1127

	if (ret < 0) {
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1128 1129 1130 1131 1132 1133 1134 1135 1136
		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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1137
	} else {
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1138 1139 1140 1141
		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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	}
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	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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1151 1152
	struct rx_agg *agg;
	struct r8152 *tp;
H
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1153

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

	tp = agg->context;
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1159 1160
	if (!tp)
		return;
H
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1161

H
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1162 1163
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;
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1164 1165 1166 1167

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

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1168
	netdev = tp->netdev;
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1169 1170 1171

	/* When link down, the driver would cancel all bulks. */
	/* This avoid the re-submitting bulk */
H
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1172
	if (!netif_carrier_ok(netdev))
H
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1173 1174
		return;

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1175 1176
	usb_mark_last_busy(tp->udev);

H
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1177 1178
	switch (status) {
	case 0:
H
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1179 1180 1181
		if (urb->actual_length < ETH_ZLEN)
			break;

1182
		spin_lock(&tp->rx_lock);
H
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1183
		list_add_tail(&agg->list, &tp->rx_done);
1184
		spin_unlock(&tp->rx_lock);
H
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1185
		napi_schedule(&tp->napi);
H
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1186
		return;
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1187 1188 1189
	case -ESHUTDOWN:
		set_bit(RTL8152_UNPLUG, &tp->flags);
		netif_device_detach(tp->netdev);
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1190
		return;
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1191 1192 1193
	case -ENOENT:
		return;	/* the urb is in unlink state */
	case -ETIME:
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1194 1195
		if (net_ratelimit())
			netdev_warn(netdev, "maybe reset is needed?\n");
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1196
		break;
H
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1197
	default:
H
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		if (net_ratelimit())
			netdev_warn(netdev, "Rx status %d\n", status);
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1200
		break;
H
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1201 1202
	}

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

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1206
static void write_bulk_callback(struct urb *urb)
H
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1207
{
H
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1208
	struct net_device_stats *stats;
1209
	struct net_device *netdev;
H
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1210
	struct tx_agg *agg;
H
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1211
	struct r8152 *tp;
H
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1212
	int status = urb->status;
H
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1213

H
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1214 1215
	agg = urb->context;
	if (!agg)
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1216 1217
		return;

H
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1218 1219 1220 1221
	tp = agg->context;
	if (!tp)
		return;

1222
	netdev = tp->netdev;
H
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1223
	stats = &netdev->stats;
H
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1224
	if (status) {
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1225
		if (net_ratelimit())
1226
			netdev_warn(netdev, "Tx status %d\n", status);
H
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1227
		stats->tx_errors += agg->skb_num;
H
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1228
	} else {
H
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1229 1230
		stats->tx_packets += agg->skb_num;
		stats->tx_bytes += agg->skb_len;
H
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1231 1232
	}

1233
	spin_lock(&tp->tx_lock);
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1234
	list_add_tail(&agg->list, &tp->tx_free);
1235
	spin_unlock(&tp->tx_lock);
H
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1236

H
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1237 1238
	usb_autopm_put_interface_async(tp->intf);

1239
	if (!netif_carrier_ok(netdev))
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		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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		napi_schedule(&tp->napi);
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1250 1251
}

1252 1253 1254
static void intr_callback(struct urb *urb)
{
	struct r8152 *tp;
1255
	__le16 *d;
1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275
	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:
1276 1277 1278
	case -EPROTO:
		netif_info(tp, intr, tp->netdev,
			   "Stop submitting intr, status %d\n", status);
1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290
		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])) {
1291
		if (!netif_carrier_ok(tp->netdev)) {
1292 1293 1294 1295
			set_bit(RTL8152_LINK_CHG, &tp->flags);
			schedule_delayed_work(&tp->schedule, 0);
		}
	} else {
1296
		if (netif_carrier_ok(tp->netdev)) {
1297 1298 1299 1300 1301 1302 1303
			set_bit(RTL8152_LINK_CHG, &tp->flags);
			schedule_delayed_work(&tp->schedule, 0);
		}
	}

resubmit:
	res = usb_submit_urb(urb, GFP_ATOMIC);
1304 1305
	if (res == -ENODEV) {
		set_bit(RTL8152_UNPLUG, &tp->flags);
1306
		netif_device_detach(tp->netdev);
1307
	} else if (res) {
1308
		netif_err(tp, intr, tp->netdev,
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1309
			  "can't resubmit intr, status %d\n", res);
1310
	}
1311 1312
}

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1313 1314
static inline void *rx_agg_align(void *data)
{
H
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1315
	return (void *)ALIGN((uintptr_t)data, RX_ALIGN);
H
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1316 1317 1318 1319
}

static inline void *tx_agg_align(void *data)
{
H
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1320
	return (void *)ALIGN((uintptr_t)data, TX_ALIGN);
H
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}

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

	for (i = 0; i < RTL8152_MAX_RX; i++) {
1328 1329
		usb_free_urb(tp->rx_info[i].urb);
		tp->rx_info[i].urb = NULL;
H
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1331 1332 1333
		kfree(tp->rx_info[i].buffer);
		tp->rx_info[i].buffer = NULL;
		tp->rx_info[i].head = NULL;
H
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1334 1335 1336
	}

	for (i = 0; i < RTL8152_MAX_TX; i++) {
1337 1338
		usb_free_urb(tp->tx_info[i].urb);
		tp->tx_info[i].urb = NULL;
H
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1340 1341 1342
		kfree(tp->tx_info[i].buffer);
		tp->tx_info[i].buffer = NULL;
		tp->tx_info[i].head = NULL;
H
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1343
	}
1344

1345 1346
	usb_free_urb(tp->intr_urb);
	tp->intr_urb = NULL;
1347

1348 1349
	kfree(tp->intr_buff);
	tp->intr_buff = NULL;
H
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1350 1351 1352 1353 1354
}

static int alloc_all_mem(struct r8152 *tp)
{
	struct net_device *netdev = tp->netdev;
1355 1356 1357
	struct usb_interface *intf = tp->intf;
	struct usb_host_interface *alt = intf->cur_altsetting;
	struct usb_host_endpoint *ep_intr = alt->endpoint + 2;
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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);
1367
	INIT_LIST_HEAD(&tp->rx_done);
H
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1368
	skb_queue_head_init(&tp->tx_queue);
H
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1369
	skb_queue_head_init(&tp->rx_queue);
H
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1370 1371

	for (i = 0; i < RTL8152_MAX_RX; i++) {
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1372
		buf = kmalloc_node(agg_buf_sz, GFP_KERNEL, node);
H
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1373 1374 1375 1376 1377
		if (!buf)
			goto err1;

		if (buf != rx_agg_align(buf)) {
			kfree(buf);
H
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1378
			buf = kmalloc_node(agg_buf_sz + RX_ALIGN, GFP_KERNEL,
H
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1379
					   node);
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1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397
			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++) {
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1398
		buf = kmalloc_node(agg_buf_sz, GFP_KERNEL, node);
H
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1399 1400 1401 1402 1403
		if (!buf)
			goto err1;

		if (buf != tx_agg_align(buf)) {
			kfree(buf);
H
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1404
			buf = kmalloc_node(agg_buf_sz + TX_ALIGN, GFP_KERNEL,
H
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1405
					   node);
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1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424
			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);
	}

1425 1426 1427 1428 1429 1430 1431 1432 1433 1434
	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),
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1435 1436
			 tp->intr_buff, INTBUFSIZE, intr_callback,
			 tp, tp->intr_interval);
1437

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1438 1439 1440 1441 1442 1443 1444
	return 0;

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

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1445 1446 1447 1448 1449
static struct tx_agg *r8152_get_tx_agg(struct r8152 *tp)
{
	struct tx_agg *agg = NULL;
	unsigned long flags;

1450 1451 1452
	if (list_empty(&tp->tx_free))
		return NULL;

H
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1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465
	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;
}

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/* r8152_csum_workaround()
H
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1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477
 * 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;

1478
		features &= ~(NETIF_F_SG | NETIF_F_IPV6_CSUM | NETIF_F_TSO6);
H
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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 1507 1508
		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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/* msdn_giant_send_check()
H
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1510 1511 1512 1513 1514 1515 1516
 * 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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1517 1518 1519 1520 1521
	int ret;

	ret = skb_cow_head(skb, 0);
	if (ret)
		return ret;
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1522 1523 1524 1525 1526 1527 1528

	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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1529
	return ret;
H
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1530 1531
}

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1532 1533
static inline void rtl_tx_vlan_tag(struct tx_desc *desc, struct sk_buff *skb)
{
1534
	if (skb_vlan_tag_present(skb)) {
H
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1535 1536
		u32 opts2;

1537
		opts2 = TX_VLAN_TAG | swab16(skb_vlan_tag_get(skb));
H
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1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550
		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));
}

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1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562
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
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1563 1564 1565 1566 1567 1568 1569 1570
		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;
		}

1571
		switch (vlan_get_protocol(skb)) {
H
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1572 1573 1574 1575
		case htons(ETH_P_IP):
			opts1 |= GTSENDV4;
			break;

H
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1576
		case htons(ETH_P_IPV6):
H
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1577 1578 1579 1580
			if (msdn_giant_send_check(skb)) {
				ret = TX_CSUM_TSO;
				goto unavailable;
			}
H
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1581 1582 1583
			opts1 |= GTSENDV6;
			break;

H
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1584 1585 1586 1587 1588 1589 1590 1591 1592
		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
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1593

H
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1594 1595 1596 1597 1598 1599 1600 1601
		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;
		}

1602
		switch (vlan_get_protocol(skb)) {
H
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1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 1616 1617
		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
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1618
		if (ip_protocol == IPPROTO_TCP)
H
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1619
			opts2 |= TCP_CS;
H
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1620
		else if (ip_protocol == IPPROTO_UDP)
H
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1621
			opts2 |= UDP_CS;
H
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1622
		else
H
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1623 1624
			WARN_ON_ONCE(1);

H
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1625
		opts2 |= transport_offset << TCPHO_SHIFT;
H
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1626
	}
H
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1627 1628 1629 1630

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

H
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1631
unavailable:
H
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1632
	return ret;
H
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1633 1634
}

H
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1635 1636
static int r8152_tx_agg_fill(struct r8152 *tp, struct tx_agg *agg)
{
1637
	struct sk_buff_head skb_head, *tx_queue = &tp->tx_queue;
H
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1638
	int remain, ret;
H
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1639 1640
	u8 *tx_data;

1641
	__skb_queue_head_init(&skb_head);
1642
	spin_lock(&tx_queue->lock);
1643
	skb_queue_splice_init(tx_queue, &skb_head);
1644
	spin_unlock(&tx_queue->lock);
1645

H
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1646
	tx_data = agg->head;
H
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1647 1648
	agg->skb_num = 0;
	agg->skb_len = 0;
H
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1649
	remain = agg_buf_sz;
H
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1650

H
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1651
	while (remain >= ETH_ZLEN + sizeof(struct tx_desc)) {
H
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1652 1653 1654
		struct tx_desc *tx_desc;
		struct sk_buff *skb;
		unsigned int len;
H
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1655
		u32 offset;
H
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1656

1657
		skb = __skb_dequeue(&skb_head);
H
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1658 1659 1660
		if (!skb)
			break;

H
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1661 1662 1663
		len = skb->len + sizeof(*tx_desc);

		if (len > remain) {
1664
			__skb_queue_head(&skb_head, skb);
H
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1665 1666 1667
			break;
		}

H
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1668
		tx_data = tx_agg_align(tx_data);
H
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1669
		tx_desc = (struct tx_desc *)tx_data;
H
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1670 1671 1672

		offset = (u32)skb_transport_offset(skb);

H
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1673 1674 1675 1676
		if (r8152_tx_csum(tp, tx_desc, skb, skb->len, offset)) {
			r8152_csum_workaround(tp, skb, &skb_head);
			continue;
		}
H
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1677

H
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1678 1679
		rtl_tx_vlan_tag(tx_desc, skb);

H
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1680 1681
		tx_data += sizeof(*tx_desc);

H
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1682 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692
		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
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1693
		agg->skb_len += len;
H
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1694 1695
		agg->skb_num++;

H
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1696 1697
		dev_kfree_skb_any(skb);

H
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1698
		remain = agg_buf_sz - (int)(tx_agg_align(tx_data) - agg->head);
H
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1699 1700
	}

1701
	if (!skb_queue_empty(&skb_head)) {
1702
		spin_lock(&tx_queue->lock);
1703
		skb_queue_splice(&skb_head, tx_queue);
1704
		spin_unlock(&tx_queue->lock);
1705 1706
	}

1707
	netif_tx_lock(tp->netdev);
1708 1709 1710 1711 1712

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

1713
	netif_tx_unlock(tp->netdev);
H
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1714

1715
	ret = usb_autopm_get_interface_async(tp->intf);
H
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1716 1717
	if (ret < 0)
		goto out_tx_fill;
1718

H
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1719 1720 1721 1722
	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);

1723
	ret = usb_submit_urb(agg->urb, GFP_ATOMIC);
H
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1724
	if (ret < 0)
1725
		usb_autopm_put_interface_async(tp->intf);
H
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1726 1727 1728

out_tx_fill:
	return ret;
H
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1729 1730
}

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1731 1732 1733 1734 1735
static u8 r8152_rx_csum(struct r8152 *tp, struct rx_desc *rx_desc)
{
	u8 checksum = CHECKSUM_NONE;
	u32 opts2, opts3;

1736
	if (!(tp->netdev->features & NETIF_F_RXCSUM))
H
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1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750
		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
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1751
	} else if (opts2 & RD_IPV6_CS) {
H
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1752 1753 1754 1755
		if ((opts2 & RD_UDP_CS) && !(opts3 & UDPF))
			checksum = CHECKSUM_UNNECESSARY;
		else if ((opts2 & RD_TCP_CS) && !(opts3 & TCPF))
			checksum = CHECKSUM_UNNECESSARY;
H
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1756 1757 1758 1759 1760 1761
	}

return_result:
	return checksum;
}

H
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1762
static int rx_bottom(struct r8152 *tp, int budget)
H
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1763
{
H
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1764
	unsigned long flags;
1765
	struct list_head *cursor, *next, rx_queue;
H
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1766
	int ret = 0, work_done = 0;
H
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1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 1784

	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
1785

1786
	if (list_empty(&tp->rx_done))
H
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1787
		goto out1;
1788 1789

	INIT_LIST_HEAD(&rx_queue);
H
hayeswang 已提交
1790
	spin_lock_irqsave(&tp->rx_lock, flags);
1791 1792 1793 1794
	list_splice_init(&tp->rx_done, &rx_queue);
	spin_unlock_irqrestore(&tp->rx_lock, flags);

	list_for_each_safe(cursor, next, &rx_queue) {
1795 1796 1797 1798 1799 1800
		struct rx_desc *rx_desc;
		struct rx_agg *agg;
		int len_used = 0;
		struct urb *urb;
		u8 *rx_data;

H
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1801 1802 1803 1804
		list_del_init(cursor);

		agg = list_entry(cursor, struct rx_agg, list);
		urb = agg->urb;
H
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1805 1806
		if (urb->actual_length < ETH_ZLEN)
			goto submit;
H
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1807 1808 1809

		rx_desc = agg->head;
		rx_data = agg->head;
H
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1810
		len_used += sizeof(struct rx_desc);
H
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1811

H
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1812
		while (urb->actual_length > len_used) {
1813
			struct net_device *netdev = tp->netdev;
H
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1814
			struct net_device_stats *stats = &netdev->stats;
H
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1815
			unsigned int pkt_len;
1816 1817
			struct sk_buff *skb;

H
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1818
			pkt_len = le32_to_cpu(rx_desc->opts1) & RX_LEN_MASK;
H
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1819 1820 1821
			if (pkt_len < ETH_ZLEN)
				break;

H
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1822 1823 1824 1825
			len_used += pkt_len;
			if (urb->actual_length < len_used)
				break;

H
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1826
			pkt_len -= CRC_SIZE;
H
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1827 1828
			rx_data += sizeof(struct rx_desc);

1829
			skb = napi_alloc_skb(&tp->napi, pkt_len);
H
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1830 1831
			if (!skb) {
				stats->rx_dropped++;
1832
				goto find_next_rx;
H
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1833
			}
H
hayeswang 已提交
1834 1835

			skb->ip_summed = r8152_rx_csum(tp, rx_desc);
H
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1836 1837 1838
			memcpy(skb->data, rx_data, pkt_len);
			skb_put(skb, pkt_len);
			skb->protocol = eth_type_trans(skb, netdev);
H
hayeswang 已提交
1839
			rtl_rx_vlan_tag(rx_desc, skb);
H
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1840 1841 1842 1843 1844 1845 1846 1847
			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
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1848

1849
find_next_rx:
H
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1850
			rx_data = rx_agg_align(rx_data + pkt_len + CRC_SIZE);
H
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1851 1852
			rx_desc = (struct rx_desc *)rx_data;
			len_used = (int)(rx_data - (u8 *)agg->head);
H
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1853
			len_used += sizeof(struct rx_desc);
H
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1854 1855
		}

H
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1856
submit:
H
hayeswang 已提交
1857 1858 1859 1860 1861 1862 1863 1864 1865 1866 1867 1868
		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
1869
	}
H
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1870 1871 1872

out1:
	return work_done;
H
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1873 1874 1875 1876 1877 1878
}

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

H
hayeswang 已提交
1879 1880
	do {
		struct tx_agg *agg;
H
hayeswang 已提交
1881

H
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1882
		if (skb_queue_empty(&tp->tx_queue))
H
hayeswang 已提交
1883 1884
			break;

H
hayeswang 已提交
1885 1886
		agg = r8152_get_tx_agg(tp);
		if (!agg)
H
hayeswang 已提交
1887 1888
			break;

H
hayeswang 已提交
1889 1890
		res = r8152_tx_agg_fill(tp, agg);
		if (res) {
H
hayeswang 已提交
1891
			struct net_device *netdev = tp->netdev;
H
hayeswang 已提交
1892

H
hayeswang 已提交
1893
			if (res == -ENODEV) {
1894
				set_bit(RTL8152_UNPLUG, &tp->flags);
H
hayeswang 已提交
1895 1896
				netif_device_detach(netdev);
			} else {
H
hayeswang 已提交
1897 1898 1899
				struct net_device_stats *stats = &netdev->stats;
				unsigned long flags;

H
hayeswang 已提交
1900 1901 1902
				netif_warn(tp, tx_err, netdev,
					   "failed tx_urb %d\n", res);
				stats->tx_dropped += agg->skb_num;
1903

H
hayeswang 已提交
1904 1905 1906 1907
				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
1908
		}
H
hayeswang 已提交
1909
	} while (res == 0);
H
hayeswang 已提交
1910 1911
}

H
hayeswang 已提交
1912
static void bottom_half(struct r8152 *tp)
H
hayeswang 已提交
1913
{
H
hayeswang 已提交
1914 1915 1916 1917
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

	if (!test_bit(WORK_ENABLE, &tp->flags))
H
hayeswang 已提交
1918
		return;
H
hayeswang 已提交
1919

H
hayeswang 已提交
1920 1921
	/* When link down, the driver would cancel all bulks. */
	/* This avoid the re-submitting bulk */
H
hayeswang 已提交
1922
	if (!netif_carrier_ok(tp->netdev))
H
hayeswang 已提交
1923
		return;
H
hayeswang 已提交
1924

H
hayeswang 已提交
1925
	clear_bit(SCHEDULE_NAPI, &tp->flags);
1926

1927
	tx_bottom(tp);
H
hayeswang 已提交
1928 1929
}

H
hayeswang 已提交
1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941
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
1942 1943 1944
		else if (!skb_queue_empty(&tp->tx_queue) &&
			 !list_empty(&tp->tx_free))
			napi_schedule(napi);
H
hayeswang 已提交
1945 1946 1947 1948 1949
	}

	return work_done;
}

H
hayeswang 已提交
1950 1951 1952
static
int r8152_submit_rx(struct r8152 *tp, struct rx_agg *agg, gfp_t mem_flags)
{
H
hayeswang 已提交
1953 1954
	int ret;

1955 1956 1957 1958 1959
	/* 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
1960
	usb_fill_bulk_urb(agg->urb, tp->udev, usb_rcvbulkpipe(tp->udev, 1),
H
hayeswang 已提交
1961
			  agg->head, agg_buf_sz,
H
hayeswang 已提交
1962
			  (usb_complete_t)read_bulk_callback, agg);
H
hayeswang 已提交
1963

H
hayeswang 已提交
1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975
	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
1976 1977 1978 1979 1980

		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
1981 1982 1983
	}

	return ret;
H
hayeswang 已提交
1984 1985
}

H
hayeswang 已提交
1986 1987 1988
static void rtl_drop_queued_tx(struct r8152 *tp)
{
	struct net_device_stats *stats = &tp->netdev->stats;
1989
	struct sk_buff_head skb_head, *tx_queue = &tp->tx_queue;
H
hayeswang 已提交
1990 1991
	struct sk_buff *skb;

1992 1993 1994 1995
	if (skb_queue_empty(tx_queue))
		return;

	__skb_queue_head_init(&skb_head);
1996
	spin_lock_bh(&tx_queue->lock);
1997
	skb_queue_splice_init(tx_queue, &skb_head);
1998
	spin_unlock_bh(&tx_queue->lock);
1999 2000

	while ((skb = __skb_dequeue(&skb_head))) {
H
hayeswang 已提交
2001 2002 2003 2004 2005
		dev_kfree_skb(skb);
		stats->tx_dropped++;
	}
}

H
hayeswang 已提交
2006 2007 2008
static void rtl8152_tx_timeout(struct net_device *netdev)
{
	struct r8152 *tp = netdev_priv(netdev);
H
hayeswang 已提交
2009

H
Hayes Wang 已提交
2010
	netif_warn(tp, tx_err, netdev, "Tx timeout\n");
H
hayeswang 已提交
2011 2012

	usb_queue_reset_device(tp->intf);
H
hayeswang 已提交
2013 2014 2015 2016 2017 2018
}

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

2019
	if (netif_carrier_ok(netdev)) {
H
hayeswang 已提交
2020
		set_bit(RTL8152_SET_RX_MODE, &tp->flags);
2021 2022
		schedule_delayed_work(&tp->schedule, 0);
	}
H
hayeswang 已提交
2023 2024 2025 2026 2027
}

static void _rtl8152_set_rx_mode(struct net_device *netdev)
{
	struct r8152 *tp = netdev_priv(netdev);
2028 2029
	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;
		}
	}

2062 2063
	tmp[0] = __cpu_to_le32(swab32(mc_filter[1]));
	tmp[1] = __cpu_to_le32(swab32(mc_filter[0]));
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2065
	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)
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		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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2095 2096
	if (!list_empty(&tp->tx_free)) {
		if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
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			set_bit(SCHEDULE_NAPI, &tp->flags);
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			schedule_delayed_work(&tp->schedule, 0);
		} else {
			usb_mark_last_busy(tp->udev);
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			napi_schedule(&tp->napi);
2102
		}
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	} else if (skb_queue_len(&tp->tx_queue) > tp->tx_qlen) {
2104
		netif_stop_queue(netdev);
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	}
2106

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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));
2140 2141
}

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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);
	}

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	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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2235
	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)
{
2258
	u32 ocp_data = (agg_buf_sz - rx_reserved_size(tp->netdev->mtu)) / 4;
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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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	}

2311
	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);
2349 2350 2351 2352 2353
	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);

2366 2367 2368 2369
	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);
2411
	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 {
2496 2497
		u32 ocp_data;

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		__rtl_set_wol(tp, tp->saved_wolopts);
2499 2500 2501 2502 2503 2504 2505 2506

		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_data = tp->netdev->mtu + VLAN_ETH_HLEN + CRC_SIZE;
	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, ocp_data);
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	ocp_write_byte(tp, MCU_TYPE_PLA, PLA_MTPS, MTPS_JUMBO);
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	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);

2920
	/* 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);
H
hayeswang 已提交
2937 2938 2939 2940 2941

	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
2942
		usleep_range(1000, 2000);
H
hayeswang 已提交
2943 2944 2945 2946 2947 2948 2949 2950 2951 2952
	}

	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
2953
		usleep_range(1000, 2000);
H
hayeswang 已提交
2954 2955
	}

2956 2957
	ocp_data = tp->netdev->mtu + VLAN_ETH_HLEN + CRC_SIZE;
	ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, ocp_data);
H
hayeswang 已提交
2958 2959 2960 2961 2962

	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
2963
	rtl_rx_vlan_en(tp, true);
H
hayeswang 已提交
2964 2965 2966 2967 2968 2969 2970 2971 2972

	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
2973
	rxdy_gated_en(tp, false);
H
hayeswang 已提交
2974 2975 2976 2977 2978 2979

	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
hayeswang 已提交
2980 2981
static void rtl8153_disable(struct r8152 *tp)
{
H
hayeswang 已提交
2982
	r8153_aldps_en(tp, false);
H
hayeswang 已提交
2983
	rtl_disable(tp);
H
hayeswang 已提交
2984
	rtl_reset_bmu(tp);
H
hayeswang 已提交
2985
	r8153_aldps_en(tp, true);
H
hayeswang 已提交
2986
	usb_enable_lpm(tp->udev);
H
hayeswang 已提交
2987 2988
}

H
hayeswang 已提交
2989 2990
static int rtl8152_set_speed(struct r8152 *tp, u8 autoneg, u16 speed, u8 duplex)
{
H
hayeswang 已提交
2991
	u16 bmcr, anar, gbcr;
H
hayeswang 已提交
2992 2993 2994 2995 2996
	int ret = 0;

	anar = r8152_mdio_read(tp, MII_ADVERTISE);
	anar &= ~(ADVERTISE_10HALF | ADVERTISE_10FULL |
		  ADVERTISE_100HALF | ADVERTISE_100FULL);
H
hayeswang 已提交
2997 2998 2999 3000 3001 3002
	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
3003 3004 3005 3006 3007 3008 3009 3010

	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
3011 3012 3013
		} else if (speed == SPEED_1000 && tp->mii.supports_gmii) {
			bmcr = BMCR_SPEED1000;
			gbcr |= ADVERTISE_1000FULL | ADVERTISE_1000HALF;
H
hayeswang 已提交
3014 3015 3016 3017 3018 3019 3020 3021 3022 3023 3024 3025 3026 3027 3028 3029 3030 3031 3032 3033 3034
		} 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
3035 3036 3037 3038 3039 3040 3041 3042 3043 3044
		} 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
3045 3046 3047 3048 3049 3050 3051 3052
		} else {
			ret = -EINVAL;
			goto out;
		}

		bmcr = BMCR_ANENABLE | BMCR_ANRESTART;
	}

3053
	if (test_and_clear_bit(PHY_RESET, &tp->flags))
3054 3055
		bmcr |= BMCR_RESET;

H
hayeswang 已提交
3056 3057 3058
	if (tp->mii.supports_gmii)
		r8152_mdio_write(tp, MII_CTRL1000, gbcr);

H
hayeswang 已提交
3059 3060 3061
	r8152_mdio_write(tp, MII_ADVERTISE, anar);
	r8152_mdio_write(tp, MII_BMCR, bmcr);

3062
	if (bmcr & BMCR_RESET) {
3063 3064 3065 3066 3067 3068 3069 3070 3071
		int i;

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

H
hayeswang 已提交
3072 3073 3074 3075
out:
	return ret;
}

H
hayeswang 已提交
3076 3077 3078 3079 3080
static void rtl8152_up(struct r8152 *tp)
{
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
3081
	r8152_aldps_en(tp, false);
H
hayeswang 已提交
3082
	r8152b_exit_oob(tp);
H
hayeswang 已提交
3083
	r8152_aldps_en(tp, true);
H
hayeswang 已提交
3084 3085
}

H
hayeswang 已提交
3086 3087
static void rtl8152_down(struct r8152 *tp)
{
H
hayeswang 已提交
3088 3089 3090 3091 3092
	if (test_bit(RTL8152_UNPLUG, &tp->flags)) {
		rtl_drop_queued_tx(tp);
		return;
	}

H
hayeswang 已提交
3093
	r8152_power_cut_en(tp, false);
H
hayeswang 已提交
3094
	r8152_aldps_en(tp, false);
H
hayeswang 已提交
3095
	r8152b_enter_oob(tp);
H
hayeswang 已提交
3096
	r8152_aldps_en(tp, true);
H
hayeswang 已提交
3097 3098
}

H
hayeswang 已提交
3099 3100 3101 3102 3103
static void rtl8153_up(struct r8152 *tp)
{
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
3104
	r8153_u1u2en(tp, false);
H
hayeswang 已提交
3105
	r8153_aldps_en(tp, false);
H
hayeswang 已提交
3106
	r8153_first_init(tp);
H
hayeswang 已提交
3107
	r8153_aldps_en(tp, true);
H
hayeswang 已提交
3108 3109 3110
	r8153_u2p3en(tp, true);
	r8153_u1u2en(tp, true);
	usb_enable_lpm(tp->udev);
H
hayeswang 已提交
3111 3112
}

H
hayeswang 已提交
3113 3114
static void rtl8153_down(struct r8152 *tp)
{
H
hayeswang 已提交
3115 3116 3117 3118 3119
	if (test_bit(RTL8152_UNPLUG, &tp->flags)) {
		rtl_drop_queued_tx(tp);
		return;
	}

3120
	r8153_u1u2en(tp, false);
H
hayeswang 已提交
3121
	r8153_u2p3en(tp, false);
3122
	r8153_power_cut_en(tp, false);
H
hayeswang 已提交
3123
	r8153_aldps_en(tp, false);
H
hayeswang 已提交
3124
	r8153_enter_oob(tp);
H
hayeswang 已提交
3125
	r8153_aldps_en(tp, true);
H
hayeswang 已提交
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 3151 3152 3153
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
3154 3155 3156 3157 3158 3159 3160 3161
static void set_carrier(struct r8152 *tp)
{
	struct net_device *netdev = tp->netdev;
	u8 speed;

	speed = rtl8152_get_speed(tp);

	if (speed & LINK_STATUS) {
3162
		if (!netif_carrier_ok(netdev)) {
H
hayeswang 已提交
3163
			tp->rtl_ops.enable(tp);
H
hayeswang 已提交
3164
			set_bit(RTL8152_SET_RX_MODE, &tp->flags);
3165
			netif_stop_queue(netdev);
3166
			napi_disable(&tp->napi);
H
hayeswang 已提交
3167
			netif_carrier_on(netdev);
3168
			rtl_start_rx(tp);
3169
			napi_enable(&tp->napi);
3170 3171
			netif_wake_queue(netdev);
			netif_info(tp, link, netdev, "carrier on\n");
H
hayeswang 已提交
3172 3173
		}
	} else {
3174
		if (netif_carrier_ok(netdev)) {
H
hayeswang 已提交
3175
			netif_carrier_off(netdev);
H
hayeswang 已提交
3176
			napi_disable(&tp->napi);
H
hayeswang 已提交
3177
			tp->rtl_ops.disable(tp);
H
hayeswang 已提交
3178
			napi_enable(&tp->napi);
3179
			netif_info(tp, link, netdev, "carrier off\n");
H
hayeswang 已提交
3180 3181 3182 3183 3184 3185 3186 3187
		}
	}
}

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

3188 3189 3190 3191 3192 3193
	/* 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
3194 3195 3196
	if (usb_autopm_get_interface(tp->intf) < 0)
		return;

H
hayeswang 已提交
3197 3198 3199
	if (!test_bit(WORK_ENABLE, &tp->flags))
		goto out1;

H
hayeswang 已提交
3200 3201 3202 3203 3204
	if (!mutex_trylock(&tp->control)) {
		schedule_delayed_work(&tp->schedule, 0);
		goto out1;
	}

H
hayeswang 已提交
3205
	if (test_and_clear_bit(RTL8152_LINK_CHG, &tp->flags))
3206
		set_carrier(tp);
H
hayeswang 已提交
3207

H
hayeswang 已提交
3208
	if (test_and_clear_bit(RTL8152_SET_RX_MODE, &tp->flags))
H
hayeswang 已提交
3209 3210
		_rtl8152_set_rx_mode(tp->netdev);

H
hayeswang 已提交
3211
	/* don't schedule napi before linking */
H
hayeswang 已提交
3212 3213
	if (test_and_clear_bit(SCHEDULE_NAPI, &tp->flags) &&
	    netif_carrier_ok(tp->netdev))
H
hayeswang 已提交
3214
		napi_schedule(&tp->napi);
3215

H
hayeswang 已提交
3216 3217
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3218
out1:
H
hayeswang 已提交
3219
	usb_autopm_put_interface(tp->intf);
H
hayeswang 已提交
3220 3221
}

3222 3223 3224 3225 3226 3227 3228 3229 3230 3231 3232 3233 3234 3235
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
3236
	rtl8152_set_speed(tp, tp->autoneg, tp->speed, tp->duplex);
3237

3238 3239 3240 3241 3242
	mutex_unlock(&tp->control);

	usb_autopm_put_interface(tp->intf);
}

H
hayeswang 已提交
3243 3244 3245 3246 3247 3248 3249 3250 3251 3252 3253 3254 3255 3256 3257 3258 3259 3260 3261 3262 3263 3264 3265 3266 3267 3268 3269
#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
3270 3271 3272 3273 3274
static int rtl8152_open(struct net_device *netdev)
{
	struct r8152 *tp = netdev_priv(netdev);
	int res = 0;

3275 3276 3277 3278
	res = alloc_all_mem(tp);
	if (res)
		goto out;

H
hayeswang 已提交
3279
	res = usb_autopm_get_interface(tp->intf);
3280 3281
	if (res < 0)
		goto out_free;
H
hayeswang 已提交
3282

H
hayeswang 已提交
3283 3284
	mutex_lock(&tp->control);

3285 3286
	tp->rtl_ops.up(tp);

3287 3288 3289
	netif_carrier_off(netdev);
	netif_start_queue(netdev);
	set_bit(WORK_ENABLE, &tp->flags);
3290

3291 3292 3293 3294
	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
3295 3296
		netif_warn(tp, ifup, netdev, "intr_urb submit failed: %d\n",
			   res);
3297
		goto out_unlock;
H
hayeswang 已提交
3298
	}
3299
	napi_enable(&tp->napi);
H
hayeswang 已提交
3300

H
hayeswang 已提交
3301 3302
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3303
	usb_autopm_put_interface(tp->intf);
H
hayeswang 已提交
3304 3305 3306 3307
#ifdef CONFIG_PM_SLEEP
	tp->pm_notifier.notifier_call = rtl_notifier;
	register_pm_notifier(&tp->pm_notifier);
#endif
3308
	return 0;
H
hayeswang 已提交
3309

3310 3311 3312 3313 3314
out_unlock:
	mutex_unlock(&tp->control);
	usb_autopm_put_interface(tp->intf);
out_free:
	free_all_mem(tp);
3315
out:
H
hayeswang 已提交
3316 3317 3318 3319 3320 3321 3322 3323
	return res;
}

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

H
hayeswang 已提交
3324 3325 3326
#ifdef CONFIG_PM_SLEEP
	unregister_pm_notifier(&tp->pm_notifier);
#endif
H
hayeswang 已提交
3327
	napi_disable(&tp->napi);
H
hayeswang 已提交
3328
	clear_bit(WORK_ENABLE, &tp->flags);
3329
	usb_kill_urb(tp->intr_urb);
H
hayeswang 已提交
3330 3331
	cancel_delayed_work_sync(&tp->schedule);
	netif_stop_queue(netdev);
H
hayeswang 已提交
3332 3333

	res = usb_autopm_get_interface(tp->intf);
3334
	if (res < 0 || test_bit(RTL8152_UNPLUG, &tp->flags)) {
H
hayeswang 已提交
3335
		rtl_drop_queued_tx(tp);
H
hayeswang 已提交
3336
		rtl_stop_rx(tp);
H
hayeswang 已提交
3337
	} else {
H
hayeswang 已提交
3338 3339
		mutex_lock(&tp->control);

H
hayeswang 已提交
3340
		tp->rtl_ops.down(tp);
H
hayeswang 已提交
3341 3342 3343

		mutex_unlock(&tp->control);

H
hayeswang 已提交
3344 3345
		usb_autopm_put_interface(tp->intf);
	}
H
hayeswang 已提交
3346

3347 3348
	free_all_mem(tp);

H
hayeswang 已提交
3349 3350 3351
	return res;
}

3352 3353 3354 3355 3356 3357 3358 3359 3360
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
3361 3362
static void r8152b_init(struct r8152 *tp)
{
H
hayeswang 已提交
3363
	u32 ocp_data;
H
hayeswang 已提交
3364
	u16 data;
H
hayeswang 已提交
3365

H
hayeswang 已提交
3366 3367 3368
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
3369 3370 3371 3372 3373 3374
	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
3375
	r8152_aldps_en(tp, false);
H
hayeswang 已提交
3376

H
hayeswang 已提交
3377 3378 3379 3380 3381 3382
	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
3383
	r8152_power_cut_en(tp, false);
H
hayeswang 已提交
3384 3385 3386 3387 3388 3389 3390 3391 3392 3393 3394 3395

	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);

3396
	rtl_tally_reset(tp);
H
hayeswang 已提交
3397

H
hayeswang 已提交
3398
	/* enable rx aggregation */
H
hayeswang 已提交
3399
	ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_USB_CTRL);
3400
	ocp_data &= ~(RX_AGG_DISABLE | RX_ZERO_EN);
H
hayeswang 已提交
3401 3402 3403
	ocp_write_word(tp, MCU_TYPE_USB, USB_USB_CTRL, ocp_data);
}

H
hayeswang 已提交
3404 3405 3406
static void r8153_init(struct r8152 *tp)
{
	u32 ocp_data;
H
hayeswang 已提交
3407
	u16 data;
H
hayeswang 已提交
3408 3409
	int i;

H
hayeswang 已提交
3410 3411 3412
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

3413
	r8153_u1u2en(tp, false);
H
hayeswang 已提交
3414 3415 3416 3417 3418 3419 3420 3421 3422 3423 3424 3425 3426 3427 3428

	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
hayeswang 已提交
3429 3430 3431 3432 3433 3434 3435 3436 3437 3438 3439 3440 3441 3442 3443 3444 3445
	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
3446
	usb_disable_lpm(tp->udev);
3447
	r8153_u2p3en(tp, false);
H
hayeswang 已提交
3448

H
hayeswang 已提交
3449 3450 3451 3452 3453 3454 3455 3456 3457 3458 3459 3460 3461 3462
	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
3463 3464 3465 3466 3467 3468 3469
		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
3470 3471 3472 3473 3474 3475 3476 3477 3478 3479 3480 3481
		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
hayeswang 已提交
3482 3483 3484 3485 3486 3487 3488 3489
	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
3490
	ocp_data = FIFO_EMPTY_1FB | ROK_EXIT_LPM;
O
Oliver Neukum 已提交
3491
	if (tp->version == RTL_VER_04 && tp->udev->speed < USB_SPEED_SUPER)
H
hayeswang 已提交
3492
		ocp_data |= LPM_TIMER_500MS;
H
hayeswang 已提交
3493 3494
	else
		ocp_data |= LPM_TIMER_500US;
H
hayeswang 已提交
3495 3496 3497 3498 3499 3500 3501
	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
3502 3503
	ocp_write_word(tp, MCU_TYPE_USB, USB_CONNECT_TIMER, 0x0001);

3504 3505
	r8153_power_cut_en(tp, false);
	r8153_u1u2en(tp, true);
H
hayeswang 已提交
3506

H
hayeswang 已提交
3507 3508 3509 3510 3511
	/* 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
3512

3513
	rtl_tally_reset(tp);
H
hayeswang 已提交
3514
	r8153_u2p3en(tp, true);
H
hayeswang 已提交
3515 3516
}

H
hayeswang 已提交
3517 3518 3519 3520 3521 3522 3523 3524 3525 3526 3527 3528
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;

3529
	netif_stop_queue(netdev);
H
hayeswang 已提交
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 3556 3557 3558
	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);
3559
		rtl_start_rx(tp);
H
hayeswang 已提交
3560 3561 3562 3563 3564
		rtl8152_set_rx_mode(netdev);
		mutex_unlock(&tp->control);
	}

	napi_enable(&tp->napi);
3565
	netif_wake_queue(netdev);
3566
	usb_submit_urb(tp->intr_urb, GFP_KERNEL);
H
hayeswang 已提交
3567

3568 3569
	if (!list_empty(&tp->rx_done))
		napi_schedule(&tp->napi);
H
hayeswang 已提交
3570 3571

	return 0;
H
hayeswang 已提交
3572 3573
}

3574 3575 3576 3577 3578 3579 3580 3581 3582 3583 3584 3585 3586 3587 3588 3589 3590
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;
3591 3592
	else if (!skb_queue_empty(&tp->tx_queue))
		return true;
3593 3594 3595 3596
	else
		return false;
}

H
hayeswang 已提交
3597
static int rtl8152_runtime_suspend(struct r8152 *tp)
H
hayeswang 已提交
3598
{
3599 3600
	struct net_device *netdev = tp->netdev;
	int ret = 0;
H
hayeswang 已提交
3601

3602 3603 3604
	set_bit(SELECTIVE_SUSPEND, &tp->flags);
	smp_mb__after_atomic();

3605
	if (netif_running(netdev) && test_bit(WORK_ENABLE, &tp->flags)) {
3606 3607
		u32 rcr = 0;

3608
		if (delay_autosuspend(tp)) {
3609 3610
			clear_bit(SELECTIVE_SUSPEND, &tp->flags);
			smp_mb__after_atomic();
3611 3612 3613 3614
			ret = -EBUSY;
			goto out1;
		}

3615 3616 3617 3618 3619 3620 3621 3622 3623 3624 3625 3626
		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);
3627 3628
				clear_bit(SELECTIVE_SUSPEND, &tp->flags);
				smp_mb__after_atomic();
3629 3630 3631 3632 3633
				ret = -EBUSY;
				goto out1;
			}
		}

3634 3635
		clear_bit(WORK_ENABLE, &tp->flags);
		usb_kill_urb(tp->intr_urb);
3636

3637
		tp->rtl_ops.autosuspend_en(tp, true);
3638 3639 3640 3641 3642 3643 3644 3645

		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);
		}
3646
	}
H
hayeswang 已提交
3647

3648 3649 3650 3651 3652 3653 3654 3655 3656 3657 3658
out1:
	return ret;
}

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

	netif_device_detach(netdev);

3659
	if (netif_running(netdev) && test_bit(WORK_ENABLE, &tp->flags)) {
H
hayeswang 已提交
3660
		clear_bit(WORK_ENABLE, &tp->flags);
3661
		usb_kill_urb(tp->intr_urb);
H
hayeswang 已提交
3662
		napi_disable(&tp->napi);
3663 3664
		cancel_delayed_work_sync(&tp->schedule);
		tp->rtl_ops.down(tp);
H
hayeswang 已提交
3665
		napi_enable(&tp->napi);
H
hayeswang 已提交
3666
	}
3667 3668 3669 3670 3671 3672 3673 3674 3675 3676 3677 3678

	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
3679
		ret = rtl8152_runtime_suspend(tp);
3680 3681 3682
	else
		ret = rtl8152_system_suspend(tp);

H
hayeswang 已提交
3683 3684
	mutex_unlock(&tp->control);

3685
	return ret;
H
hayeswang 已提交
3686 3687 3688 3689 3690 3691
}

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

H
hayeswang 已提交
3692 3693
	mutex_lock(&tp->control);

H
hayeswang 已提交
3694 3695
	if (!test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
		tp->rtl_ops.init(tp);
3696
		queue_delayed_work(system_long_wq, &tp->hw_phy_work, 0);
H
hayeswang 已提交
3697 3698 3699
		netif_device_attach(tp->netdev);
	}

3700
	if (netif_running(tp->netdev) && tp->netdev->flags & IFF_UP) {
H
hayeswang 已提交
3701
		if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
3702
			tp->rtl_ops.autosuspend_en(tp, false);
3703
			napi_disable(&tp->napi);
3704
			set_bit(WORK_ENABLE, &tp->flags);
3705
			if (netif_carrier_ok(tp->netdev))
3706
				rtl_start_rx(tp);
3707
			napi_enable(&tp->napi);
3708 3709
			clear_bit(SELECTIVE_SUSPEND, &tp->flags);
			smp_mb__after_atomic();
3710 3711
			if (!list_empty(&tp->rx_done))
				napi_schedule(&tp->napi);
H
hayeswang 已提交
3712 3713
		} else {
			tp->rtl_ops.up(tp);
3714 3715
			netif_carrier_off(tp->netdev);
			set_bit(WORK_ENABLE, &tp->flags);
H
hayeswang 已提交
3716
		}
3717
		usb_submit_urb(tp->intr_urb, GFP_KERNEL);
3718
	} else if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) {
3719
		if (tp->netdev->flags & IFF_UP)
3720
			tp->rtl_ops.autosuspend_en(tp, false);
3721
		clear_bit(SELECTIVE_SUSPEND, &tp->flags);
H
hayeswang 已提交
3722 3723
	}

H
hayeswang 已提交
3724 3725
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3726 3727 3728
	return 0;
}

H
hayeswang 已提交
3729 3730 3731 3732 3733 3734 3735 3736
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
3737 3738 3739 3740
static void rtl8152_get_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct r8152 *tp = netdev_priv(dev);

H
hayeswang 已提交
3741 3742 3743
	if (usb_autopm_get_interface(tp->intf) < 0)
		return;

H
hayeswang 已提交
3744 3745 3746 3747 3748 3749 3750 3751 3752
	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
3753

H
hayeswang 已提交
3754
	usb_autopm_put_interface(tp->intf);
H
hayeswang 已提交
3755 3756 3757 3758 3759
}

static int rtl8152_set_wol(struct net_device *dev, struct ethtool_wolinfo *wol)
{
	struct r8152 *tp = netdev_priv(dev);
H
hayeswang 已提交
3760 3761
	int ret;

H
hayeswang 已提交
3762 3763 3764
	if (!rtl_can_wakeup(tp))
		return -EOPNOTSUPP;

H
hayeswang 已提交
3765 3766 3767
	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		goto out_set_wol;
H
hayeswang 已提交
3768

H
hayeswang 已提交
3769 3770
	mutex_lock(&tp->control);

H
hayeswang 已提交
3771 3772 3773
	__rtl_set_wol(tp, wol->wolopts);
	tp->saved_wolopts = wol->wolopts & WAKE_ANY;

H
hayeswang 已提交
3774 3775
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3776 3777 3778 3779
	usb_autopm_put_interface(tp->intf);

out_set_wol:
	return ret;
H
hayeswang 已提交
3780 3781
}

3782 3783 3784 3785 3786 3787 3788 3789 3790 3791 3792 3793 3794 3795
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
3796 3797 3798 3799 3800
static void rtl8152_get_drvinfo(struct net_device *netdev,
				struct ethtool_drvinfo *info)
{
	struct r8152 *tp = netdev_priv(netdev);

H
hayeswang 已提交
3801 3802
	strlcpy(info->driver, MODULENAME, sizeof(info->driver));
	strlcpy(info->version, DRIVER_VERSION, sizeof(info->version));
H
hayeswang 已提交
3803 3804 3805 3806 3807 3808 3809
	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
3810
	int ret;
H
hayeswang 已提交
3811 3812 3813 3814

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

H
hayeswang 已提交
3815 3816 3817 3818
	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		goto out;

H
hayeswang 已提交
3819 3820
	mutex_lock(&tp->control);

H
hayeswang 已提交
3821 3822
	ret = mii_ethtool_gset(&tp->mii, cmd);

H
hayeswang 已提交
3823 3824
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3825 3826 3827 3828
	usb_autopm_put_interface(tp->intf);

out:
	return ret;
H
hayeswang 已提交
3829 3830 3831 3832 3833
}

static int rtl8152_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
{
	struct r8152 *tp = netdev_priv(dev);
H
hayeswang 已提交
3834 3835 3836 3837 3838
	int ret;

	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		goto out;
H
hayeswang 已提交
3839

H
hayeswang 已提交
3840 3841
	mutex_lock(&tp->control);

H
hayeswang 已提交
3842
	ret = rtl8152_set_speed(tp, cmd->autoneg, cmd->speed, cmd->duplex);
H
hayeswang 已提交
3843 3844 3845 3846 3847
	if (!ret) {
		tp->autoneg = cmd->autoneg;
		tp->speed = cmd->speed;
		tp->duplex = cmd->duplex;
	}
H
hayeswang 已提交
3848

H
hayeswang 已提交
3849 3850
	mutex_unlock(&tp->control);

H
hayeswang 已提交
3851 3852 3853 3854
	usb_autopm_put_interface(tp->intf);

out:
	return ret;
H
hayeswang 已提交
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 3886 3887 3888
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;

3889 3890 3891
	if (usb_autopm_get_interface(tp->intf) < 0)
		return;

3892 3893
	generic_ocp_read(tp, PLA_TALLYCNT, sizeof(tally), &tally, MCU_TYPE_PLA);

3894 3895
	usb_autopm_put_interface(tp->intf);

3896 3897 3898 3899 3900 3901 3902 3903 3904 3905 3906 3907
	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);
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3908
	data[12] = le16_to_cpu(tally.tx_underrun);
3909 3910 3911 3912 3913 3914 3915 3916 3917 3918 3919
}

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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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 4007 4008 4009
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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4010 4011
	mutex_lock(&tp->control);

H
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4012 4013
	ret = tp->rtl_ops.eee_get(tp, edata);

H
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4014 4015
	mutex_unlock(&tp->control);

H
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4016 4017 4018 4019 4020 4021 4022 4023 4024 4025 4026 4027 4028 4029 4030 4031
	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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4032 4033
	mutex_lock(&tp->control);

H
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4034
	ret = tp->rtl_ops.eee_set(tp, edata);
H
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4035 4036
	if (!ret)
		ret = mii_nway_restart(&tp->mii);
H
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4037

H
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4038 4039
	mutex_unlock(&tp->control);

H
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4040 4041 4042 4043 4044 4045
	usb_autopm_put_interface(tp->intf);

out:
	return ret;
}

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4046 4047 4048 4049 4050 4051 4052 4053 4054 4055 4056 4057 4058 4059 4060 4061 4062 4063 4064 4065 4066
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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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 4119 4120 4121
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;
}

4122
static const struct ethtool_ops ops = {
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4123 4124 4125 4126
	.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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4127
	.nway_reset = rtl8152_nway_reset,
4128 4129
	.get_msglevel = rtl8152_get_msglevel,
	.set_msglevel = rtl8152_set_msglevel,
H
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4130 4131
	.get_wol = rtl8152_get_wol,
	.set_wol = rtl8152_set_wol,
4132 4133 4134
	.get_strings = rtl8152_get_strings,
	.get_sset_count = rtl8152_get_sset_count,
	.get_ethtool_stats = rtl8152_get_ethtool_stats,
H
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4135 4136
	.get_coalesce = rtl8152_get_coalesce,
	.set_coalesce = rtl8152_set_coalesce,
H
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4137 4138
	.get_eee = rtl_ethtool_get_eee,
	.set_eee = rtl_ethtool_set_eee,
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4139 4140 4141 4142 4143 4144
};

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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4145 4146
	int res;

H
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4147 4148 4149
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return -ENODEV;

H
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4150 4151 4152
	res = usb_autopm_get_interface(tp->intf);
	if (res < 0)
		goto out;
H
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4153 4154 4155 4156 4157 4158 4159

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

	case SIOCGMIIREG:
H
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4160
		mutex_lock(&tp->control);
H
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4161
		data->val_out = r8152_mdio_read(tp, data->reg_num);
H
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4162
		mutex_unlock(&tp->control);
H
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4163 4164 4165 4166 4167 4168 4169
		break;

	case SIOCSMIIREG:
		if (!capable(CAP_NET_ADMIN)) {
			res = -EPERM;
			break;
		}
H
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4170
		mutex_lock(&tp->control);
H
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4171
		r8152_mdio_write(tp, data->reg_num, data->val_in);
H
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4172
		mutex_unlock(&tp->control);
H
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4173 4174 4175 4176 4177 4178
		break;

	default:
		res = -EOPNOTSUPP;
	}

H
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4179 4180 4181
	usb_autopm_put_interface(tp->intf);

out:
H
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4182 4183 4184
	return res;
}

4185 4186 4187
static int rtl8152_change_mtu(struct net_device *dev, int new_mtu)
{
	struct r8152 *tp = netdev_priv(dev);
4188
	int ret;
4189 4190 4191 4192

	switch (tp->version) {
	case RTL_VER_01:
	case RTL_VER_02:
4193 4194
		dev->mtu = new_mtu;
		return 0;
4195 4196 4197 4198
	default:
		break;
	}

4199 4200 4201 4202 4203 4204
	ret = usb_autopm_get_interface(tp->intf);
	if (ret < 0)
		return ret;

	mutex_lock(&tp->control);

4205 4206
	dev->mtu = new_mtu;

4207 4208 4209 4210 4211 4212 4213 4214
	if (netif_running(dev)) {
		u32 rms = new_mtu + VLAN_ETH_HLEN + CRC_SIZE;

		ocp_write_word(tp, MCU_TYPE_PLA, PLA_RMS, rms);

		if (netif_carrier_ok(dev))
			r8153_set_rx_early_size(tp);
	}
4215 4216 4217 4218 4219 4220

	mutex_unlock(&tp->control);

	usb_autopm_put_interface(tp->intf);

	return ret;
4221 4222
}

H
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4223 4224 4225 4226 4227 4228
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
hayeswang 已提交
4229
	.ndo_set_features	= rtl8152_set_features,
H
hayeswang 已提交
4230 4231
	.ndo_set_rx_mode	= rtl8152_set_rx_mode,
	.ndo_set_mac_address	= rtl8152_set_mac_address,
4232
	.ndo_change_mtu		= rtl8152_change_mtu,
H
hayeswang 已提交
4233
	.ndo_validate_addr	= eth_validate_addr,
H
hayeswang 已提交
4234
	.ndo_features_check	= rtl8152_features_check,
H
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4235 4236 4237 4238 4239 4240 4241 4242 4243 4244 4245 4246 4247 4248 4249 4250 4251
};

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
4252 4253 4254 4255 4256 4257 4258 4259 4260 4261 4262 4263
	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
4264 4265 4266 4267
	case 0x5c30:
		tp->version = RTL_VER_06;
		tp->mii.supports_gmii = 1;
		break;
H
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4268 4269 4270 4271 4272 4273 4274
	default:
		netif_info(tp, probe, tp->netdev,
			   "Unknown version 0x%04x\n", version);
		break;
	}
}

4275 4276
static void rtl8152_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 4281
	if (tp->version != RTL_VER_01)
		r8152_power_cut_en(tp, true);
4282 4283
}

H
hayeswang 已提交
4284 4285
static void rtl8153_unload(struct r8152 *tp)
{
H
hayeswang 已提交
4286 4287 4288
	if (test_bit(RTL8152_UNPLUG, &tp->flags))
		return;

H
hayeswang 已提交
4289
	r8153_power_cut_en(tp, false);
H
hayeswang 已提交
4290 4291
}

H
hayeswang 已提交
4292
static int rtl_ops_init(struct r8152 *tp)
H
hayeswang 已提交
4293 4294
{
	struct rtl_ops *ops = &tp->rtl_ops;
H
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4295 4296 4297 4298 4299 4300 4301 4302 4303 4304 4305 4306 4307
	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;
4308
		ops->in_nway		= rtl8152_in_nway;
4309
		ops->hw_phy_cfg		= r8152b_hw_phy_cfg;
4310
		ops->autosuspend_en	= rtl_runtime_suspend_enable;
H
hayeswang 已提交
4311 4312
		break;

H
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4313 4314 4315
	case RTL_VER_03:
	case RTL_VER_04:
	case RTL_VER_05:
H
hayeswang 已提交
4316
	case RTL_VER_06:
H
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4317 4318 4319 4320 4321 4322 4323 4324
		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;
4325
		ops->in_nway		= rtl8153_in_nway;
4326
		ops->hw_phy_cfg		= r8153_hw_phy_cfg;
4327
		ops->autosuspend_en	= rtl8153_runtime_enable;
H
hayeswang 已提交
4328 4329 4330
		break;

	default:
H
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4331 4332
		ret = -ENODEV;
		netif_err(tp, probe, tp->netdev, "Unknown Device\n");
H
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4333 4334 4335 4336 4337 4338
		break;
	}

	return ret;
}

H
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4339 4340 4341 4342 4343 4344
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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4345
	int ret;
H
hayeswang 已提交
4346

H
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4347 4348 4349 4350 4351 4352
	if (udev->actconfig->desc.bConfigurationValue != 1) {
		usb_driver_set_configuration(udev, 1);
		return -ENODEV;
	}

	usb_reset_device(udev);
H
hayeswang 已提交
4353 4354
	netdev = alloc_etherdev(sizeof(struct r8152));
	if (!netdev) {
H
Hayes Wang 已提交
4355
		dev_err(&intf->dev, "Out of memory\n");
H
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4356 4357 4358
		return -ENOMEM;
	}

H
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4359
	SET_NETDEV_DEV(netdev, &intf->dev);
H
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4360 4361 4362
	tp = netdev_priv(netdev);
	tp->msg_enable = 0x7FFF;

4363 4364 4365 4366
	tp->udev = udev;
	tp->netdev = netdev;
	tp->intf = intf;

H
hayeswang 已提交
4367
	r8152b_get_version(tp);
H
hayeswang 已提交
4368
	ret = rtl_ops_init(tp);
4369 4370
	if (ret)
		goto out;
H
hayeswang 已提交
4371

H
hayeswang 已提交
4372
	mutex_init(&tp->control);
H
hayeswang 已提交
4373
	INIT_DELAYED_WORK(&tp->schedule, rtl_work_func_t);
4374
	INIT_DELAYED_WORK(&tp->hw_phy_work, rtl_hw_phy_work_func_t);
H
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4375 4376 4377

	netdev->netdev_ops = &rtl8152_netdev_ops;
	netdev->watchdog_timeo = RTL8152_TX_TIMEOUT;
H
hayeswang 已提交
4378

H
hayeswang 已提交
4379
	netdev->features |= NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_SG |
H
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4380
			    NETIF_F_TSO | NETIF_F_FRAGLIST | NETIF_F_IPV6_CSUM |
H
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4381 4382
			    NETIF_F_TSO6 | NETIF_F_HW_VLAN_CTAG_RX |
			    NETIF_F_HW_VLAN_CTAG_TX;
H
hayeswang 已提交
4383
	netdev->hw_features = NETIF_F_RXCSUM | NETIF_F_IP_CSUM | NETIF_F_SG |
H
hayeswang 已提交
4384
			      NETIF_F_TSO | NETIF_F_FRAGLIST |
H
hayeswang 已提交
4385
			      NETIF_F_IPV6_CSUM | NETIF_F_TSO6 |
4386
			      NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HW_VLAN_CTAG_TX;
H
hayeswang 已提交
4387 4388 4389
	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;
4390

4391 4392 4393 4394 4395
	if (tp->version == RTL_VER_01) {
		netdev->features &= ~NETIF_F_RXCSUM;
		netdev->hw_features &= ~NETIF_F_RXCSUM;
	}

4396
	netdev->ethtool_ops = &ops;
H
hayeswang 已提交
4397
	netif_set_gso_max_size(netdev, RTL_LIMITED_TSO_SIZE);
H
hayeswang 已提交
4398

4399 4400 4401 4402 4403 4404 4405 4406 4407 4408 4409 4410
	/* 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
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4411 4412 4413 4414 4415 4416 4417
	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;

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	switch (udev->speed) {
	case USB_SPEED_SUPER:
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	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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	tp->rtl_ops.init(tp);
4438
	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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	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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		netif_err(tp, probe, netdev, "couldn't register the device\n");
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		goto out1;
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	}

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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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	return 0;

out1:
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	netif_napi_del(&tp->napi);
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	usb_set_intfdata(intf, NULL);
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out:
	free_netdev(netdev);
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	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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		netif_napi_del(&tp->napi);
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		unregister_netdev(tp->netdev);
4484
		cancel_delayed_work_sync(&tp->hw_phy_work);
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		tp->rtl_ops.unload(tp);
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		free_netdev(tp->netdev);
	}
}

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#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)},
4511
	{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)},
4517
	{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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	.id_table =	rtl8152_table,
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	.probe =	rtl8152_probe,
	.disconnect =	rtl8152_disconnect,
	.suspend =	rtl8152_suspend,
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	.resume =	rtl8152_resume,
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	.reset_resume =	rtl8152_reset_resume,
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	.pre_reset =	rtl8152_pre_reset,
	.post_reset =	rtl8152_post_reset,
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	.supports_autosuspend = 1,
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	.disable_hub_initiated_lpm = 1,
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4535 4536
};

4537
module_usb_driver(rtl8152_driver);
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MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);
MODULE_LICENSE("GPL");
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MODULE_VERSION(DRIVER_VERSION);