| // SPDX-License-Identifier: GPL-2.0-only |
| /* |
| * Copyright (c) 2014 Realtek Semiconductor Corp. All rights reserved. |
| */ |
| |
| #include <linux/signal.h> |
| #include <linux/slab.h> |
| #include <linux/module.h> |
| #include <linux/netdevice.h> |
| #include <linux/etherdevice.h> |
| #include <linux/mii.h> |
| #include <linux/ethtool.h> |
| #include <linux/usb.h> |
| #include <linux/crc32.h> |
| #include <linux/if_vlan.h> |
| #include <linux/uaccess.h> |
| #include <linux/list.h> |
| #include <linux/ip.h> |
| #include <linux/ipv6.h> |
| #include <net/ip6_checksum.h> |
| #include <uapi/linux/mdio.h> |
| #include <linux/mdio.h> |
| #include <linux/usb/cdc.h> |
| #include <linux/suspend.h> |
| #include <linux/atomic.h> |
| #include <linux/acpi.h> |
| |
| /* Information for net-next */ |
| #define NETNEXT_VERSION "10" |
| |
| /* Information for net */ |
| #define NET_VERSION "11" |
| |
| #define DRIVER_VERSION "v1." NETNEXT_VERSION "." NET_VERSION |
| #define DRIVER_AUTHOR "Realtek linux nic maintainers <nic_swsd@realtek.com>" |
| #define DRIVER_DESC "Realtek RTL8152/RTL8153 Based USB Ethernet Adapters" |
| #define MODULENAME "r8152" |
| |
| #define R8152_PHY_ID 32 |
| |
| #define PLA_IDR 0xc000 |
| #define PLA_RCR 0xc010 |
| #define PLA_RMS 0xc016 |
| #define PLA_RXFIFO_CTRL0 0xc0a0 |
| #define PLA_RXFIFO_CTRL1 0xc0a4 |
| #define PLA_RXFIFO_CTRL2 0xc0a8 |
| #define PLA_DMY_REG0 0xc0b0 |
| #define PLA_FMC 0xc0b4 |
| #define PLA_CFG_WOL 0xc0b6 |
| #define PLA_TEREDO_CFG 0xc0bc |
| #define PLA_TEREDO_WAKE_BASE 0xc0c4 |
| #define PLA_MAR 0xcd00 |
| #define PLA_BACKUP 0xd000 |
| #define PLA_BDC_CR 0xd1a0 |
| #define PLA_TEREDO_TIMER 0xd2cc |
| #define PLA_REALWOW_TIMER 0xd2e8 |
| #define PLA_SUSPEND_FLAG 0xd38a |
| #define PLA_INDICATE_FALG 0xd38c |
| #define PLA_EXTRA_STATUS 0xd398 |
| #define PLA_EFUSE_DATA 0xdd00 |
| #define PLA_EFUSE_CMD 0xdd02 |
| #define PLA_LEDSEL 0xdd90 |
| #define PLA_LED_FEATURE 0xdd92 |
| #define PLA_PHYAR 0xde00 |
| #define PLA_BOOT_CTRL 0xe004 |
| #define PLA_LWAKE_CTRL_REG 0xe007 |
| #define PLA_GPHY_INTR_IMR 0xe022 |
| #define PLA_EEE_CR 0xe040 |
| #define PLA_EEEP_CR 0xe080 |
| #define PLA_MAC_PWR_CTRL 0xe0c0 |
| #define PLA_MAC_PWR_CTRL2 0xe0ca |
| #define PLA_MAC_PWR_CTRL3 0xe0cc |
| #define PLA_MAC_PWR_CTRL4 0xe0ce |
| #define PLA_WDT6_CTRL 0xe428 |
| #define PLA_TCR0 0xe610 |
| #define PLA_TCR1 0xe612 |
| #define PLA_MTPS 0xe615 |
| #define PLA_TXFIFO_CTRL 0xe618 |
| #define PLA_RSTTALLY 0xe800 |
| #define PLA_CR 0xe813 |
| #define PLA_CRWECR 0xe81c |
| #define PLA_CONFIG12 0xe81e /* CONFIG1, CONFIG2 */ |
| #define PLA_CONFIG34 0xe820 /* CONFIG3, CONFIG4 */ |
| #define PLA_CONFIG5 0xe822 |
| #define PLA_PHY_PWR 0xe84c |
| #define PLA_OOB_CTRL 0xe84f |
| #define PLA_CPCR 0xe854 |
| #define PLA_MISC_0 0xe858 |
| #define PLA_MISC_1 0xe85a |
| #define PLA_OCP_GPHY_BASE 0xe86c |
| #define PLA_TALLYCNT 0xe890 |
| #define PLA_SFF_STS_7 0xe8de |
| #define PLA_PHYSTATUS 0xe908 |
| #define PLA_CONFIG6 0xe90a /* CONFIG6 */ |
| #define PLA_BP_BA 0xfc26 |
| #define PLA_BP_0 0xfc28 |
| #define PLA_BP_1 0xfc2a |
| #define PLA_BP_2 0xfc2c |
| #define PLA_BP_3 0xfc2e |
| #define PLA_BP_4 0xfc30 |
| #define PLA_BP_5 0xfc32 |
| #define PLA_BP_6 0xfc34 |
| #define PLA_BP_7 0xfc36 |
| #define PLA_BP_EN 0xfc38 |
| |
| #define USB_USB2PHY 0xb41e |
| #define USB_SSPHYLINK1 0xb426 |
| #define USB_SSPHYLINK2 0xb428 |
| #define USB_U2P3_CTRL 0xb460 |
| #define USB_CSR_DUMMY1 0xb464 |
| #define USB_CSR_DUMMY2 0xb466 |
| #define USB_DEV_STAT 0xb808 |
| #define USB_CONNECT_TIMER 0xcbf8 |
| #define USB_MSC_TIMER 0xcbfc |
| #define USB_BURST_SIZE 0xcfc0 |
| #define USB_LPM_CONFIG 0xcfd8 |
| #define USB_USB_CTRL 0xd406 |
| #define USB_PHY_CTRL 0xd408 |
| #define USB_TX_AGG 0xd40a |
| #define USB_RX_BUF_TH 0xd40c |
| #define USB_USB_TIMER 0xd428 |
| #define USB_RX_EARLY_TIMEOUT 0xd42c |
| #define USB_RX_EARLY_SIZE 0xd42e |
| #define USB_PM_CTRL_STATUS 0xd432 /* RTL8153A */ |
| #define USB_RX_EXTRA_AGGR_TMR 0xd432 /* RTL8153B */ |
| #define USB_TX_DMA 0xd434 |
| #define USB_UPT_RXDMA_OWN 0xd437 |
| #define USB_TOLERANCE 0xd490 |
| #define USB_LPM_CTRL 0xd41a |
| #define USB_BMU_RESET 0xd4b0 |
| #define USB_U1U2_TIMER 0xd4da |
| #define USB_UPS_CTRL 0xd800 |
| #define USB_POWER_CUT 0xd80a |
| #define USB_MISC_0 0xd81a |
| #define USB_MISC_1 0xd81f |
| #define USB_AFE_CTRL2 0xd824 |
| #define USB_UPS_CFG 0xd842 |
| #define USB_UPS_FLAGS 0xd848 |
| #define USB_WDT11_CTRL 0xe43c |
| #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 |
| #define USB_BP_EN 0xfc38 |
| #define USB_BP_8 0xfc38 |
| #define USB_BP_9 0xfc3a |
| #define USB_BP_10 0xfc3c |
| #define USB_BP_11 0xfc3e |
| #define USB_BP_12 0xfc40 |
| #define USB_BP_13 0xfc42 |
| #define USB_BP_14 0xfc44 |
| #define USB_BP_15 0xfc46 |
| #define USB_BP2_EN 0xfc48 |
| |
| /* OCP Registers */ |
| #define OCP_ALDPS_CONFIG 0x2010 |
| #define OCP_EEE_CONFIG1 0x2080 |
| #define OCP_EEE_CONFIG2 0x2092 |
| #define OCP_EEE_CONFIG3 0x2094 |
| #define OCP_BASE_MII 0xa400 |
| #define OCP_EEE_AR 0xa41a |
| #define OCP_EEE_DATA 0xa41c |
| #define OCP_PHY_STATUS 0xa420 |
| #define OCP_NCTL_CFG 0xa42c |
| #define OCP_POWER_CFG 0xa430 |
| #define OCP_EEE_CFG 0xa432 |
| #define OCP_SRAM_ADDR 0xa436 |
| #define OCP_SRAM_DATA 0xa438 |
| #define OCP_DOWN_SPEED 0xa442 |
| #define OCP_EEE_ABLE 0xa5c4 |
| #define OCP_EEE_ADV 0xa5d0 |
| #define OCP_EEE_LPABLE 0xa5d2 |
| #define OCP_PHY_STATE 0xa708 /* nway state for 8153 */ |
| #define OCP_PHY_PATCH_STAT 0xb800 |
| #define OCP_PHY_PATCH_CMD 0xb820 |
| #define OCP_ADC_IOFFSET 0xbcfc |
| #define OCP_ADC_CFG 0xbc06 |
| #define OCP_SYSCLK_CFG 0xc416 |
| |
| /* SRAM Register */ |
| #define SRAM_GREEN_CFG 0x8011 |
| #define SRAM_LPF_CFG 0x8012 |
| #define SRAM_10M_AMP1 0x8080 |
| #define SRAM_10M_AMP2 0x8082 |
| #define SRAM_IMPEDANCE 0x8084 |
| |
| /* 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 |
| #define RXFIFO_THR2_NORMAL 0x00a0 |
| |
| /* PLA_RXFIFO_CTRL2 */ |
| #define RXFIFO_THR3_FULL 0x00000078 |
| #define RXFIFO_THR3_HIGH 0x00000048 |
| #define RXFIFO_THR3_OOB 0x0000005a |
| #define RXFIFO_THR3_NORMAL 0x0110 |
| |
| /* PLA_TXFIFO_CTRL */ |
| #define TXFIFO_THR_NORMAL 0x00400008 |
| #define TXFIFO_THR_NORMAL2 0x01000008 |
| |
| /* PLA_DMY_REG0 */ |
| #define ECM_ALDPS 0x0002 |
| |
| /* PLA_FMC */ |
| #define FMC_FCR_MCU_EN 0x0001 |
| |
| /* PLA_EEEP_CR */ |
| #define EEEP_CR_EEEP_TX 0x0002 |
| |
| /* PLA_WDT6_CTRL */ |
| #define WDT6_SET_MODE 0x0010 |
| |
| /* PLA_TCR0 */ |
| #define TCR0_TX_EMPTY 0x0800 |
| #define TCR0_AUTO_FIFO 0x0080 |
| |
| /* PLA_TCR1 */ |
| #define VERSION_MASK 0x7cf0 |
| |
| /* PLA_MTPS */ |
| #define MTPS_JUMBO (12 * 1024 / 64) |
| #define MTPS_DEFAULT (6 * 1024 / 64) |
| |
| /* PLA_RSTTALLY */ |
| #define TALLY_RESET 0x0001 |
| |
| /* PLA_CR */ |
| #define CR_RST 0x10 |
| #define CR_RE 0x08 |
| #define CR_TE 0x04 |
| |
| /* PLA_CRWECR */ |
| #define CRWECR_NORAML 0x00 |
| #define CRWECR_CONFIG 0xc0 |
| |
| /* PLA_OOB_CTRL */ |
| #define NOW_IS_OOB 0x80 |
| #define TXFIFO_EMPTY 0x20 |
| #define RXFIFO_EMPTY 0x10 |
| #define LINK_LIST_READY 0x02 |
| #define DIS_MCU_CLROOB 0x01 |
| #define FIFO_EMPTY (TXFIFO_EMPTY | RXFIFO_EMPTY) |
| |
| /* PLA_MISC_1 */ |
| #define RXDY_GATED_EN 0x0008 |
| |
| /* PLA_SFF_STS_7 */ |
| #define RE_INIT_LL 0x8000 |
| #define MCU_BORW_EN 0x4000 |
| |
| /* PLA_CPCR */ |
| #define CPCR_RX_VLAN 0x0040 |
| |
| /* PLA_CFG_WOL */ |
| #define MAGIC_EN 0x0001 |
| |
| /* PLA_TEREDO_CFG */ |
| #define TEREDO_SEL 0x8000 |
| #define TEREDO_WAKE_MASK 0x7f00 |
| #define TEREDO_RS_EVENT_MASK 0x00fe |
| #define OOB_TEREDO_EN 0x0001 |
| |
| /* PLA_BDC_CR */ |
| #define ALDPS_PROXY_MODE 0x0001 |
| |
| /* PLA_EFUSE_CMD */ |
| #define EFUSE_READ_CMD BIT(15) |
| #define EFUSE_DATA_BIT16 BIT(7) |
| |
| /* PLA_CONFIG34 */ |
| #define LINK_ON_WAKE_EN 0x0010 |
| #define LINK_OFF_WAKE_EN 0x0008 |
| |
| /* PLA_CONFIG6 */ |
| #define LANWAKE_CLR_EN BIT(0) |
| |
| /* PLA_CONFIG5 */ |
| #define BWF_EN 0x0040 |
| #define MWF_EN 0x0020 |
| #define UWF_EN 0x0010 |
| #define LAN_WAKE_EN 0x0002 |
| |
| /* PLA_LED_FEATURE */ |
| #define LED_MODE_MASK 0x0700 |
| |
| /* PLA_PHY_PWR */ |
| #define TX_10M_IDLE_EN 0x0080 |
| #define PFM_PWM_SWITCH 0x0040 |
| #define TEST_IO_OFF BIT(4) |
| |
| /* PLA_MAC_PWR_CTRL */ |
| #define D3_CLK_GATED_EN 0x00004000 |
| #define MCU_CLK_RATIO 0x07010f07 |
| #define MCU_CLK_RATIO_MASK 0x0f0f0f0f |
| #define ALDPS_SPDWN_RATIO 0x0f87 |
| |
| /* PLA_MAC_PWR_CTRL2 */ |
| #define EEE_SPDWN_RATIO 0x8007 |
| #define MAC_CLK_SPDWN_EN BIT(15) |
| |
| /* PLA_MAC_PWR_CTRL3 */ |
| #define PLA_MCU_SPDWN_EN BIT(14) |
| #define PKT_AVAIL_SPDWN_EN 0x0100 |
| #define SUSPEND_SPDWN_EN 0x0004 |
| #define U1U2_SPDWN_EN 0x0002 |
| #define L1_SPDWN_EN 0x0001 |
| |
| /* PLA_MAC_PWR_CTRL4 */ |
| #define PWRSAVE_SPDWN_EN 0x1000 |
| #define RXDV_SPDWN_EN 0x0800 |
| #define TX10MIDLE_EN 0x0100 |
| #define TP100_SPDWN_EN 0x0020 |
| #define TP500_SPDWN_EN 0x0010 |
| #define TP1000_SPDWN_EN 0x0008 |
| #define EEE_SPDWN_EN 0x0001 |
| |
| /* PLA_GPHY_INTR_IMR */ |
| #define GPHY_STS_MSK 0x0001 |
| #define SPEED_DOWN_MSK 0x0002 |
| #define SPDWN_RXDV_MSK 0x0004 |
| #define SPDWN_LINKCHG_MSK 0x0008 |
| |
| /* PLA_PHYAR */ |
| #define PHYAR_FLAG 0x80000000 |
| |
| /* PLA_EEE_CR */ |
| #define EEE_RX_EN 0x0001 |
| #define EEE_TX_EN 0x0002 |
| |
| /* PLA_BOOT_CTRL */ |
| #define AUTOLOAD_DONE 0x0002 |
| |
| /* PLA_LWAKE_CTRL_REG */ |
| #define LANWAKE_PIN BIT(7) |
| |
| /* PLA_SUSPEND_FLAG */ |
| #define LINK_CHG_EVENT BIT(0) |
| |
| /* PLA_INDICATE_FALG */ |
| #define UPCOMING_RUNTIME_D3 BIT(0) |
| |
| /* PLA_EXTRA_STATUS */ |
| #define LINK_CHANGE_FLAG BIT(8) |
| |
| /* USB_USB2PHY */ |
| #define USB2PHY_SUSPEND 0x0001 |
| #define USB2PHY_L1 0x0002 |
| |
| /* USB_SSPHYLINK1 */ |
| #define DELAY_PHY_PWR_CHG BIT(1) |
| |
| /* USB_SSPHYLINK2 */ |
| #define pwd_dn_scale_mask 0x3ffe |
| #define pwd_dn_scale(x) ((x) << 1) |
| |
| /* USB_CSR_DUMMY1 */ |
| #define DYNAMIC_BURST 0x0001 |
| |
| /* USB_CSR_DUMMY2 */ |
| #define EP4_FULL_FC 0x0001 |
| |
| /* USB_DEV_STAT */ |
| #define STAT_SPEED_MASK 0x0006 |
| #define STAT_SPEED_HIGH 0x0000 |
| #define STAT_SPEED_FULL 0x0002 |
| |
| /* USB_LPM_CONFIG */ |
| #define LPM_U1U2_EN BIT(0) |
| |
| /* USB_TX_AGG */ |
| #define TX_AGG_MAX_THRESHOLD 0x03 |
| |
| /* USB_RX_BUF_TH */ |
| #define RX_THR_SUPPER 0x0c350180 |
| #define RX_THR_HIGH 0x7a120180 |
| #define RX_THR_SLOW 0xffff0180 |
| #define RX_THR_B 0x00010001 |
| |
| /* USB_TX_DMA */ |
| #define TEST_MODE_DISABLE 0x00000001 |
| #define TX_SIZE_ADJUST1 0x00000100 |
| |
| /* USB_BMU_RESET */ |
| #define BMU_RESET_EP_IN 0x01 |
| #define BMU_RESET_EP_OUT 0x02 |
| |
| /* USB_UPT_RXDMA_OWN */ |
| #define OWN_UPDATE BIT(0) |
| #define OWN_CLEAR BIT(1) |
| |
| /* USB_UPS_CTRL */ |
| #define POWER_CUT 0x0100 |
| |
| /* USB_PM_CTRL_STATUS */ |
| #define RESUME_INDICATE 0x0001 |
| |
| /* USB_USB_CTRL */ |
| #define RX_AGG_DISABLE 0x0010 |
| #define RX_ZERO_EN 0x0080 |
| |
| /* USB_U2P3_CTRL */ |
| #define U2P3_ENABLE 0x0001 |
| |
| /* USB_POWER_CUT */ |
| #define PWR_EN 0x0001 |
| #define PHASE2_EN 0x0008 |
| #define UPS_EN BIT(4) |
| #define USP_PREWAKE BIT(5) |
| |
| /* USB_MISC_0 */ |
| #define PCUT_STATUS 0x0001 |
| |
| /* USB_RX_EARLY_TIMEOUT */ |
| #define COALESCE_SUPER 85000U |
| #define COALESCE_HIGH 250000U |
| #define COALESCE_SLOW 524280U |
| |
| /* USB_WDT11_CTRL */ |
| #define TIMER11_EN 0x0001 |
| |
| /* USB_LPM_CTRL */ |
| /* bit 4 ~ 5: fifo empty boundary */ |
| #define FIFO_EMPTY_1FB 0x30 /* 0x1fb * 64 = 32448 bytes */ |
| /* bit 2 ~ 3: LMP timer */ |
| #define LPM_TIMER_MASK 0x0c |
| #define LPM_TIMER_500MS 0x04 /* 500 ms */ |
| #define LPM_TIMER_500US 0x0c /* 500 us */ |
| #define ROK_EXIT_LPM 0x02 |
| |
| /* USB_AFE_CTRL2 */ |
| #define SEN_VAL_MASK 0xf800 |
| #define SEN_VAL_NORMAL 0xa000 |
| #define SEL_RXIDLE 0x0100 |
| |
| /* USB_UPS_CFG */ |
| #define SAW_CNT_1MS_MASK 0x0fff |
| |
| /* USB_UPS_FLAGS */ |
| #define UPS_FLAGS_R_TUNE BIT(0) |
| #define UPS_FLAGS_EN_10M_CKDIV BIT(1) |
| #define UPS_FLAGS_250M_CKDIV BIT(2) |
| #define UPS_FLAGS_EN_ALDPS BIT(3) |
| #define UPS_FLAGS_CTAP_SHORT_DIS BIT(4) |
| #define ups_flags_speed(x) ((x) << 16) |
| #define UPS_FLAGS_EN_EEE BIT(20) |
| #define UPS_FLAGS_EN_500M_EEE BIT(21) |
| #define UPS_FLAGS_EN_EEE_CKDIV BIT(22) |
| #define UPS_FLAGS_EEE_PLLOFF_100 BIT(23) |
| #define UPS_FLAGS_EEE_PLLOFF_GIGA BIT(24) |
| #define UPS_FLAGS_EEE_CMOD_LV_EN BIT(25) |
| #define UPS_FLAGS_EN_GREEN BIT(26) |
| #define UPS_FLAGS_EN_FLOW_CTR BIT(27) |
| |
| enum spd_duplex { |
| NWAY_10M_HALF, |
| NWAY_10M_FULL, |
| NWAY_100M_HALF, |
| NWAY_100M_FULL, |
| NWAY_1000M_FULL, |
| FORCE_10M_HALF, |
| FORCE_10M_FULL, |
| FORCE_100M_HALF, |
| FORCE_100M_FULL, |
| }; |
| |
| /* OCP_ALDPS_CONFIG */ |
| #define ENPWRSAVE 0x8000 |
| #define ENPDNPS 0x0200 |
| #define LINKENA 0x0100 |
| #define DIS_SDSAVE 0x0010 |
| |
| /* OCP_PHY_STATUS */ |
| #define PHY_STAT_MASK 0x0007 |
| #define PHY_STAT_EXT_INIT 2 |
| #define PHY_STAT_LAN_ON 3 |
| #define PHY_STAT_PWRDN 5 |
| |
| /* OCP_NCTL_CFG */ |
| #define PGA_RETURN_EN BIT(1) |
| |
| /* OCP_POWER_CFG */ |
| #define EEE_CLKDIV_EN 0x8000 |
| #define EN_ALDPS 0x0004 |
| #define EN_10M_PLLOFF 0x0001 |
| |
| /* OCP_EEE_CONFIG1 */ |
| #define RG_TXLPI_MSK_HFDUP 0x8000 |
| #define RG_MATCLR_EN 0x4000 |
| #define EEE_10_CAP 0x2000 |
| #define EEE_NWAY_EN 0x1000 |
| #define TX_QUIET_EN 0x0200 |
| #define RX_QUIET_EN 0x0100 |
| #define sd_rise_time_mask 0x0070 |
| #define sd_rise_time(x) (min(x, 7) << 4) /* bit 4 ~ 6 */ |
| #define RG_RXLPI_MSK_HFDUP 0x0008 |
| #define SDFALLTIME 0x0007 /* bit 0 ~ 2 */ |
| |
| /* OCP_EEE_CONFIG2 */ |
| #define RG_LPIHYS_NUM 0x7000 /* bit 12 ~ 15 */ |
| #define RG_DACQUIET_EN 0x0400 |
| #define RG_LDVQUIET_EN 0x0200 |
| #define RG_CKRSEL 0x0020 |
| #define RG_EEEPRG_EN 0x0010 |
| |
| /* OCP_EEE_CONFIG3 */ |
| #define fast_snr_mask 0xff80 |
| #define fast_snr(x) (min(x, 0x1ff) << 7) /* bit 7 ~ 15 */ |
| #define RG_LFS_SEL 0x0060 /* bit 6 ~ 5 */ |
| #define MSK_PH 0x0006 /* bit 0 ~ 3 */ |
| |
| /* OCP_EEE_AR */ |
| /* bit[15:14] function */ |
| #define FUN_ADDR 0x0000 |
| #define FUN_DATA 0x4000 |
| /* bit[4:0] device addr */ |
| |
| /* OCP_EEE_CFG */ |
| #define CTAP_SHORT_EN 0x0040 |
| #define EEE10_EN 0x0010 |
| |
| /* OCP_DOWN_SPEED */ |
| #define EN_EEE_CMODE BIT(14) |
| #define EN_EEE_1000 BIT(13) |
| #define EN_EEE_100 BIT(12) |
| #define EN_10M_CLKDIV BIT(11) |
| #define EN_10M_BGOFF 0x0080 |
| |
| /* OCP_PHY_STATE */ |
| #define TXDIS_STATE 0x01 |
| #define ABD_STATE 0x02 |
| |
| /* OCP_PHY_PATCH_STAT */ |
| #define PATCH_READY BIT(6) |
| |
| /* OCP_PHY_PATCH_CMD */ |
| #define PATCH_REQUEST BIT(4) |
| |
| /* OCP_ADC_CFG */ |
| #define CKADSEL_L 0x0100 |
| #define ADC_EN 0x0080 |
| #define EN_EMI_L 0x0040 |
| |
| /* OCP_SYSCLK_CFG */ |
| #define clk_div_expo(x) (min(x, 5) << 8) |
| |
| /* SRAM_GREEN_CFG */ |
| #define GREEN_ETH_EN BIT(15) |
| #define R_TUNE_EN BIT(11) |
| |
| /* SRAM_LPF_CFG */ |
| #define LPF_AUTO_TUNE 0x8000 |
| |
| /* SRAM_10M_AMP1 */ |
| #define GDAC_IB_UPALL 0x0008 |
| |
| /* SRAM_10M_AMP2 */ |
| #define AMP_DN 0x0200 |
| |
| /* SRAM_IMPEDANCE */ |
| #define RX_DRIVING_MASK 0x6000 |
| |
| /* MAC PASSTHRU */ |
| #define AD_MASK 0xfee0 |
| #define BND_MASK 0x0004 |
| #define BD_MASK 0x0001 |
| #define EFUSE 0xcfdb |
| #define PASS_THRU_MASK 0x1 |
| |
| enum rtl_register_content { |
| _1000bps = 0x10, |
| _100bps = 0x08, |
| _10bps = 0x04, |
| LINK_STATUS = 0x02, |
| FULL_DUP = 0x01, |
| }; |
| |
| #define RTL8152_MAX_TX 4 |
| #define RTL8152_MAX_RX 10 |
| #define INTBUFSIZE 2 |
| #define TX_ALIGN 4 |
| #define RX_ALIGN 8 |
| |
| #define RTL8152_RX_MAX_PENDING 4096 |
| #define RTL8152_RXFG_HEADSZ 256 |
| |
| #define INTR_LINK 0x0004 |
| |
| #define RTL8152_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 |
| |
| #define RTL8153_MAX_PACKET 9216 /* 9K */ |
| #define RTL8153_MAX_MTU (RTL8153_MAX_PACKET - VLAN_ETH_HLEN - \ |
| ETH_FCS_LEN) |
| #define RTL8152_RMS (VLAN_ETH_FRAME_LEN + ETH_FCS_LEN) |
| #define RTL8153_RMS RTL8153_MAX_PACKET |
| #define RTL8152_TX_TIMEOUT (5 * HZ) |
| #define RTL8152_NAPI_WEIGHT 64 |
| #define rx_reserved_size(x) ((x) + VLAN_ETH_HLEN + ETH_FCS_LEN + \ |
| sizeof(struct rx_desc) + RX_ALIGN) |
| |
| /* rtl8152 flags */ |
| enum rtl8152_flags { |
| RTL8152_UNPLUG = 0, |
| RTL8152_SET_RX_MODE, |
| WORK_ENABLE, |
| RTL8152_LINK_CHG, |
| SELECTIVE_SUSPEND, |
| PHY_RESET, |
| SCHEDULE_TASKLET, |
| GREEN_ETHERNET, |
| DELL_TB_RX_AGG_BUG, |
| }; |
| |
| /* Define these values to match your device */ |
| #define VENDOR_ID_REALTEK 0x0bda |
| #define VENDOR_ID_MICROSOFT 0x045e |
| #define VENDOR_ID_SAMSUNG 0x04e8 |
| #define VENDOR_ID_LENOVO 0x17ef |
| #define VENDOR_ID_LINKSYS 0x13b1 |
| #define VENDOR_ID_NVIDIA 0x0955 |
| #define VENDOR_ID_TPLINK 0x2357 |
| |
| #define MCU_TYPE_PLA 0x0100 |
| #define MCU_TYPE_USB 0x0000 |
| |
| struct tally_counter { |
| __le64 tx_packets; |
| __le64 rx_packets; |
| __le64 tx_errors; |
| __le32 rx_errors; |
| __le16 rx_missed; |
| __le16 align_errors; |
| __le32 tx_one_collision; |
| __le32 tx_multi_collision; |
| __le64 rx_unicast; |
| __le64 rx_broadcast; |
| __le32 rx_multicast; |
| __le16 tx_aborted; |
| __le16 tx_underrun; |
| }; |
| |
| struct rx_desc { |
| __le32 opts1; |
| #define RX_LEN_MASK 0x7fff |
| |
| __le32 opts2; |
| #define RD_UDP_CS BIT(23) |
| #define RD_TCP_CS BIT(22) |
| #define RD_IPV6_CS BIT(20) |
| #define RD_IPV4_CS BIT(19) |
| |
| __le32 opts3; |
| #define IPF BIT(23) /* IP checksum fail */ |
| #define UDPF BIT(22) /* UDP checksum fail */ |
| #define TCPF BIT(21) /* TCP checksum fail */ |
| #define RX_VLAN_TAG BIT(16) |
| |
| __le32 opts4; |
| __le32 opts5; |
| __le32 opts6; |
| }; |
| |
| struct tx_desc { |
| __le32 opts1; |
| #define TX_FS BIT(31) /* First segment of a packet */ |
| #define TX_LS BIT(30) /* Final segment of a packet */ |
| #define GTSENDV4 BIT(28) |
| #define GTSENDV6 BIT(27) |
| #define GTTCPHO_SHIFT 18 |
| #define GTTCPHO_MAX 0x7fU |
| #define TX_LEN_MAX 0x3ffffU |
| |
| __le32 opts2; |
| #define UDP_CS BIT(31) /* Calculate UDP/IP checksum */ |
| #define TCP_CS BIT(30) /* Calculate TCP/IP checksum */ |
| #define IPV4_CS BIT(29) /* Calculate IPv4 checksum */ |
| #define IPV6_CS BIT(28) /* Calculate IPv6 checksum */ |
| #define MSS_SHIFT 17 |
| #define MSS_MAX 0x7ffU |
| #define TCPHO_SHIFT 17 |
| #define TCPHO_MAX 0x7ffU |
| #define TX_VLAN_TAG BIT(16) |
| }; |
| |
| struct r8152; |
| |
| struct rx_agg { |
| struct list_head list, info_list; |
| struct urb *urb; |
| struct r8152 *context; |
| struct page *page; |
| void *buffer; |
| }; |
| |
| struct tx_agg { |
| struct list_head list; |
| struct urb *urb; |
| struct r8152 *context; |
| void *buffer; |
| void *head; |
| u32 skb_num; |
| u32 skb_len; |
| }; |
| |
| struct r8152 { |
| unsigned long flags; |
| struct usb_device *udev; |
| struct napi_struct napi; |
| struct usb_interface *intf; |
| struct net_device *netdev; |
| struct urb *intr_urb; |
| struct tx_agg tx_info[RTL8152_MAX_TX]; |
| struct list_head rx_info, rx_used; |
| struct list_head rx_done, tx_free; |
| struct sk_buff_head tx_queue, rx_queue; |
| spinlock_t rx_lock, tx_lock; |
| struct delayed_work schedule, hw_phy_work; |
| struct mii_if_info mii; |
| struct mutex control; /* use for hw setting */ |
| #ifdef CONFIG_PM_SLEEP |
| struct notifier_block pm_notifier; |
| #endif |
| struct tasklet_struct tx_tl; |
| |
| struct rtl_ops { |
| void (*init)(struct r8152 *); |
| int (*enable)(struct r8152 *); |
| void (*disable)(struct r8152 *); |
| void (*up)(struct r8152 *); |
| void (*down)(struct r8152 *); |
| void (*unload)(struct r8152 *); |
| int (*eee_get)(struct r8152 *, struct ethtool_eee *); |
| int (*eee_set)(struct r8152 *, struct ethtool_eee *); |
| bool (*in_nway)(struct r8152 *); |
| void (*hw_phy_cfg)(struct r8152 *); |
| void (*autosuspend_en)(struct r8152 *tp, bool enable); |
| } rtl_ops; |
| |
| struct ups_info { |
| u32 _10m_ckdiv:1; |
| u32 _250m_ckdiv:1; |
| u32 aldps:1; |
| u32 lite_mode:2; |
| u32 speed_duplex:4; |
| u32 eee:1; |
| u32 eee_lite:1; |
| u32 eee_ckdiv:1; |
| u32 eee_plloff_100:1; |
| u32 eee_plloff_giga:1; |
| u32 eee_cmod_lv:1; |
| u32 green:1; |
| u32 flow_control:1; |
| u32 ctap_short_off:1; |
| } ups_info; |
| |
| atomic_t rx_count; |
| |
| bool eee_en; |
| int intr_interval; |
| u32 saved_wolopts; |
| u32 msg_enable; |
| u32 tx_qlen; |
| u32 coalesce; |
| u32 advertising; |
| u32 rx_buf_sz; |
| u32 rx_copybreak; |
| u32 rx_pending; |
| |
| u16 ocp_base; |
| u16 speed; |
| u16 eee_adv; |
| u8 *intr_buff; |
| u8 version; |
| u8 duplex; |
| u8 autoneg; |
| }; |
| |
| enum rtl_version { |
| RTL_VER_UNKNOWN = 0, |
| RTL_VER_01, |
| RTL_VER_02, |
| RTL_VER_03, |
| RTL_VER_04, |
| RTL_VER_05, |
| RTL_VER_06, |
| RTL_VER_07, |
| RTL_VER_08, |
| RTL_VER_09, |
| RTL_VER_MAX |
| }; |
| |
| enum tx_csum_stat { |
| TX_CSUM_SUCCESS = 0, |
| TX_CSUM_TSO, |
| TX_CSUM_NONE |
| }; |
| |
| #define RTL_ADVERTISED_10_HALF BIT(0) |
| #define RTL_ADVERTISED_10_FULL BIT(1) |
| #define RTL_ADVERTISED_100_HALF BIT(2) |
| #define RTL_ADVERTISED_100_FULL BIT(3) |
| #define RTL_ADVERTISED_1000_HALF BIT(4) |
| #define RTL_ADVERTISED_1000_FULL BIT(5) |
| |
| /* Maximum number of multicast addresses to filter (vs. Rx-all-multicast). |
| * The RTL chips use a 64 element hash table based on the Ethernet CRC. |
| */ |
| static const int multicast_filter_limit = 32; |
| static unsigned int agg_buf_sz = 16384; |
| |
| #define RTL_LIMITED_TSO_SIZE (agg_buf_sz - sizeof(struct tx_desc) - \ |
| VLAN_ETH_HLEN - ETH_FCS_LEN) |
| |
| static |
| int get_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data) |
| { |
| int ret; |
| void *tmp; |
| |
| tmp = kmalloc(size, GFP_KERNEL); |
| if (!tmp) |
| return -ENOMEM; |
| |
| ret = usb_control_msg(tp->udev, usb_rcvctrlpipe(tp->udev, 0), |
| RTL8152_REQ_GET_REGS, RTL8152_REQT_READ, |
| value, index, tmp, size, 500); |
| if (ret < 0) |
| memset(data, 0xff, size); |
| else |
| memcpy(data, tmp, size); |
| |
| kfree(tmp); |
| |
| return ret; |
| } |
| |
| static |
| int set_registers(struct r8152 *tp, u16 value, u16 index, u16 size, void *data) |
| { |
| int ret; |
| void *tmp; |
| |
| tmp = kmemdup(data, size, GFP_KERNEL); |
| if (!tmp) |
| return -ENOMEM; |
| |
| ret = usb_control_msg(tp->udev, usb_sndctrlpipe(tp->udev, 0), |
| RTL8152_REQ_SET_REGS, RTL8152_REQT_WRITE, |
| value, index, tmp, size, 500); |
| |
| kfree(tmp); |
| |
| return ret; |
| } |
| |
| static void rtl_set_unplug(struct r8152 *tp) |
| { |
| if (tp->udev->state == USB_STATE_NOTATTACHED) { |
| set_bit(RTL8152_UNPLUG, &tp->flags); |
| smp_mb__after_atomic(); |
| } |
| } |
| |
| static int generic_ocp_read(struct r8152 *tp, u16 index, u16 size, |
| void *data, u16 type) |
| { |
| u16 limit = 64; |
| int ret = 0; |
| |
| if (test_bit(RTL8152_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; |
| } |
| } |
| |
| if (ret == -ENODEV) |
| rtl_set_unplug(tp); |
| |
| return ret; |
| } |
| |
| static int generic_ocp_write(struct r8152 *tp, u16 index, u16 byteen, |
| u16 size, void *data, u16 type) |
| { |
| int ret; |
| u16 byteen_start, byteen_end, byen; |
| u16 limit = 512; |
| |
| if (test_bit(RTL8152_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, |
| type | BYTE_EN_DWORD, |
| limit, data); |
| if (ret < 0) |
| goto error1; |
| |
| index += limit; |
| data += limit; |
| size -= limit; |
| } else { |
| ret = set_registers(tp, index, |
| type | BYTE_EN_DWORD, |
| size, data); |
| if (ret < 0) |
| goto error1; |
| |
| index += size; |
| data += size; |
| size = 0; |
| break; |
| } |
| } |
| |
| byen = byteen_end | (byteen_end >> 4); |
| ret = set_registers(tp, index, type | byen, 4, data); |
| if (ret < 0) |
| goto error1; |
| } |
| |
| error1: |
| if (ret == -ENODEV) |
| rtl_set_unplug(tp); |
| |
| return ret; |
| } |
| |
| static inline |
| int pla_ocp_read(struct r8152 *tp, u16 index, u16 size, void *data) |
| { |
| return generic_ocp_read(tp, index, size, data, MCU_TYPE_PLA); |
| } |
| |
| static inline |
| int pla_ocp_write(struct r8152 *tp, u16 index, u16 byteen, u16 size, void *data) |
| { |
| return generic_ocp_write(tp, index, byteen, size, data, MCU_TYPE_PLA); |
| } |
| |
| static inline |
| int usb_ocp_write(struct r8152 *tp, u16 index, u16 byteen, u16 size, void *data) |
| { |
| return generic_ocp_write(tp, index, byteen, size, data, MCU_TYPE_USB); |
| } |
| |
| static u32 ocp_read_dword(struct r8152 *tp, u16 type, u16 index) |
| { |
| __le32 data; |
| |
| generic_ocp_read(tp, index, sizeof(data), &data, type); |
| |
| return __le32_to_cpu(data); |
| } |
| |
| static void ocp_write_dword(struct r8152 *tp, u16 type, u16 index, u32 data) |
| { |
| __le32 tmp = __cpu_to_le32(data); |
| |
| generic_ocp_write(tp, index, BYTE_EN_DWORD, sizeof(tmp), &tmp, type); |
| } |
| |
| static u16 ocp_read_word(struct r8152 *tp, u16 type, u16 index) |
| { |
| u32 data; |
| __le32 tmp; |
| u16 byen = BYTE_EN_WORD; |
| u8 shift = index & 2; |
| |
| index &= ~3; |
| byen <<= shift; |
| |
| generic_ocp_read(tp, index, sizeof(tmp), &tmp, type | byen); |
| |
| data = __le32_to_cpu(tmp); |
| data >>= (shift * 8); |
| data &= 0xffff; |
| |
| return (u16)data; |
| } |
| |
| static void ocp_write_word(struct r8152 *tp, u16 type, u16 index, u32 data) |
| { |
| u32 mask = 0xffff; |
| __le32 tmp; |
| u16 byen = BYTE_EN_WORD; |
| u8 shift = index & 2; |
| |
| data &= mask; |
| |
| if (index & 2) { |
| byen <<= shift; |
| mask <<= (shift * 8); |
| data <<= (shift * 8); |
| index &= ~3; |
| } |
| |
| tmp = __cpu_to_le32(data); |
| |
| generic_ocp_write(tp, index, byen, sizeof(tmp), &tmp, type); |
| } |
| |
| static u8 ocp_read_byte(struct r8152 *tp, u16 type, u16 index) |
| { |
| u32 data; |
| __le32 tmp; |
| u8 shift = index & 3; |
| |
| index &= ~3; |
| |
| generic_ocp_read(tp, index, sizeof(tmp), &tmp, type); |
| |
| data = __le32_to_cpu(tmp); |
| data >>= (shift * 8); |
| data &= 0xff; |
| |
| return (u8)data; |
| } |
| |
| static void ocp_write_byte(struct r8152 *tp, u16 type, u16 index, u32 data) |
| { |
| u32 mask = 0xff; |
| __le32 tmp; |
| u16 byen = BYTE_EN_BYTE; |
| u8 shift = index & 3; |
| |
| data &= mask; |
| |
| if (index & 3) { |
| byen <<= shift; |
| mask <<= (shift * 8); |
| data <<= (shift * 8); |
| index &= ~3; |
| } |
| |
| tmp = __cpu_to_le32(data); |
| |
| generic_ocp_write(tp, index, byen, sizeof(tmp), &tmp, type); |
| } |
| |
| static u16 ocp_reg_read(struct r8152 *tp, u16 addr) |
| { |
| u16 ocp_base, ocp_index; |
| |
| ocp_base = addr & 0xf000; |
| if (ocp_base != tp->ocp_base) { |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_OCP_GPHY_BASE, ocp_base); |
| tp->ocp_base = ocp_base; |
| } |
| |
| ocp_index = (addr & 0x0fff) | 0xb000; |
| return ocp_read_word(tp, MCU_TYPE_PLA, ocp_index); |
| } |
| |
| static void ocp_reg_write(struct r8152 *tp, u16 addr, u16 data) |
| { |
| u16 ocp_base, ocp_index; |
| |
| ocp_base = addr & 0xf000; |
| if (ocp_base != tp->ocp_base) { |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_OCP_GPHY_BASE, ocp_base); |
| tp->ocp_base = ocp_base; |
| } |
| |
| ocp_index = (addr & 0x0fff) | 0xb000; |
| ocp_write_word(tp, MCU_TYPE_PLA, ocp_index, data); |
| } |
| |
| static inline void r8152_mdio_write(struct r8152 *tp, u32 reg_addr, u32 value) |
| { |
| ocp_reg_write(tp, OCP_BASE_MII + reg_addr * 2, value); |
| } |
| |
| static inline int r8152_mdio_read(struct r8152 *tp, u32 reg_addr) |
| { |
| return ocp_reg_read(tp, OCP_BASE_MII + reg_addr * 2); |
| } |
| |
| static void sram_write(struct r8152 *tp, u16 addr, u16 data) |
| { |
| ocp_reg_write(tp, OCP_SRAM_ADDR, addr); |
| ocp_reg_write(tp, OCP_SRAM_DATA, data); |
| } |
| |
| static u16 sram_read(struct r8152 *tp, u16 addr) |
| { |
| ocp_reg_write(tp, OCP_SRAM_ADDR, addr); |
| return ocp_reg_read(tp, OCP_SRAM_DATA); |
| } |
| |
| static int read_mii_word(struct net_device *netdev, int phy_id, int reg) |
| { |
| struct r8152 *tp = netdev_priv(netdev); |
| int ret; |
| |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| return -ENODEV; |
| |
| if (phy_id != R8152_PHY_ID) |
| return -EINVAL; |
| |
| ret = r8152_mdio_read(tp, reg); |
| |
| return ret; |
| } |
| |
| static |
| void write_mii_word(struct net_device *netdev, int phy_id, int reg, int val) |
| { |
| struct r8152 *tp = netdev_priv(netdev); |
| |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| return; |
| |
| if (phy_id != R8152_PHY_ID) |
| return; |
| |
| r8152_mdio_write(tp, reg, val); |
| } |
| |
| static int |
| r8152_submit_rx(struct r8152 *tp, struct rx_agg *agg, gfp_t mem_flags); |
| |
| static int rtl8152_set_mac_address(struct net_device *netdev, void *p) |
| { |
| struct r8152 *tp = netdev_priv(netdev); |
| struct sockaddr *addr = p; |
| int ret = -EADDRNOTAVAIL; |
| |
| if (!is_valid_ether_addr(addr->sa_data)) |
| goto out1; |
| |
| ret = usb_autopm_get_interface(tp->intf); |
| if (ret < 0) |
| goto out1; |
| |
| mutex_lock(&tp->control); |
| |
| 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); |
| |
| mutex_unlock(&tp->control); |
| |
| usb_autopm_put_interface(tp->intf); |
| out1: |
| return ret; |
| } |
| |
| /* Devices containing proper chips can support a persistent |
| * host system provided MAC address. |
| * Examples of this are Dell TB15 and Dell WD15 docks |
| */ |
| static int vendor_mac_passthru_addr_read(struct r8152 *tp, struct sockaddr *sa) |
| { |
| acpi_status status; |
| struct acpi_buffer buffer = { ACPI_ALLOCATE_BUFFER, NULL }; |
| union acpi_object *obj; |
| int ret = -EINVAL; |
| u32 ocp_data; |
| unsigned char buf[6]; |
| |
| /* test for -AD variant of RTL8153 */ |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0); |
| if ((ocp_data & AD_MASK) == 0x1000) { |
| /* test for MAC address pass-through bit */ |
| ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, EFUSE); |
| if ((ocp_data & PASS_THRU_MASK) != 1) { |
| netif_dbg(tp, probe, tp->netdev, |
| "No efuse for RTL8153-AD MAC pass through\n"); |
| return -ENODEV; |
| } |
| } else { |
| /* test for RTL8153-BND and RTL8153-BD */ |
| ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_MISC_1); |
| if ((ocp_data & BND_MASK) == 0 && (ocp_data & BD_MASK) == 0) { |
| netif_dbg(tp, probe, tp->netdev, |
| "Invalid variant for MAC pass through\n"); |
| return -ENODEV; |
| } |
| } |
| |
| /* 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, |
| "Invalid buffer for pass-thru MAC addr: (%d, %d)\n", |
| obj->type, obj->string.length); |
| goto amacout; |
| } |
| if (strncmp(obj->string.pointer, "_AUXMAC_#", 9) != 0 || |
| strncmp(obj->string.pointer + 0x15, "#", 1) != 0) { |
| netif_warn(tp, probe, tp->netdev, |
| "Invalid header when reading pass-thru MAC addr\n"); |
| goto amacout; |
| } |
| ret = hex2bin(buf, obj->string.pointer + 9, 6); |
| if (!(ret == 0 && is_valid_ether_addr(buf))) { |
| netif_warn(tp, probe, tp->netdev, |
| "Invalid MAC for pass-thru MAC addr: %d, %pM\n", |
| ret, buf); |
| ret = -EINVAL; |
| goto amacout; |
| } |
| memcpy(sa->sa_data, buf, 6); |
| netif_info(tp, probe, tp->netdev, |
| "Using pass-thru MAC addr %pM\n", sa->sa_data); |
| |
| amacout: |
| kfree(obj); |
| return ret; |
| } |
| |
| static int determine_ethernet_addr(struct r8152 *tp, struct sockaddr *sa) |
| { |
| struct net_device *dev = tp->netdev; |
| int ret; |
| |
| sa->sa_family = dev->type; |
| |
| if (tp->version == RTL_VER_01) { |
| ret = pla_ocp_read(tp, PLA_IDR, 8, sa->sa_data); |
| } else { |
| /* if device doesn't support MAC pass through this will |
| * be expected to be non-zero |
| */ |
| ret = vendor_mac_passthru_addr_read(tp, sa); |
| if (ret < 0) |
| ret = pla_ocp_read(tp, PLA_BACKUP, 8, sa->sa_data); |
| } |
| |
| if (ret < 0) { |
| netif_err(tp, probe, dev, "Get ether addr fail\n"); |
| } else if (!is_valid_ether_addr(sa->sa_data)) { |
| netif_err(tp, probe, dev, "Invalid ether addr %pM\n", |
| sa->sa_data); |
| eth_hw_addr_random(dev); |
| ether_addr_copy(sa->sa_data, dev->dev_addr); |
| netif_info(tp, probe, dev, "Random ether addr %pM\n", |
| sa->sa_data); |
| return 0; |
| } |
| |
| return ret; |
| } |
| |
| static int set_ethernet_addr(struct r8152 *tp) |
| { |
| struct net_device *dev = tp->netdev; |
| struct sockaddr sa; |
| int ret; |
| |
| ret = determine_ethernet_addr(tp, &sa); |
| if (ret < 0) |
| return ret; |
| |
| if (tp->version == RTL_VER_01) |
| ether_addr_copy(dev->dev_addr, sa.sa_data); |
| else |
| ret = rtl8152_set_mac_address(dev, &sa); |
| |
| return ret; |
| } |
| |
| static void read_bulk_callback(struct urb *urb) |
| { |
| struct net_device *netdev; |
| int status = urb->status; |
| struct rx_agg *agg; |
| struct r8152 *tp; |
| unsigned long flags; |
| |
| agg = urb->context; |
| if (!agg) |
| return; |
| |
| tp = agg->context; |
| if (!tp) |
| return; |
| |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| return; |
| |
| if (!test_bit(WORK_ENABLE, &tp->flags)) |
| return; |
| |
| netdev = tp->netdev; |
| |
| /* When link down, the driver would cancel all bulks. */ |
| /* This avoid the re-submitting bulk */ |
| if (!netif_carrier_ok(netdev)) |
| return; |
| |
| usb_mark_last_busy(tp->udev); |
| |
| switch (status) { |
| case 0: |
| if (urb->actual_length < ETH_ZLEN) |
| break; |
| |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| list_add_tail(&agg->list, &tp->rx_done); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| napi_schedule(&tp->napi); |
| return; |
| case -ESHUTDOWN: |
| rtl_set_unplug(tp); |
| netif_device_detach(tp->netdev); |
| return; |
| case -ENOENT: |
| return; /* the urb is in unlink state */ |
| case -ETIME: |
| if (net_ratelimit()) |
| netdev_warn(netdev, "maybe reset is needed?\n"); |
| break; |
| default: |
| if (net_ratelimit()) |
| netdev_warn(netdev, "Rx status %d\n", status); |
| break; |
| } |
| |
| r8152_submit_rx(tp, agg, GFP_ATOMIC); |
| } |
| |
| static void write_bulk_callback(struct urb *urb) |
| { |
| struct net_device_stats *stats; |
| struct net_device *netdev; |
| struct tx_agg *agg; |
| struct r8152 *tp; |
| unsigned long flags; |
| int status = urb->status; |
| |
| agg = urb->context; |
| if (!agg) |
| return; |
| |
| tp = agg->context; |
| if (!tp) |
| return; |
| |
| netdev = tp->netdev; |
| stats = &netdev->stats; |
| if (status) { |
| if (net_ratelimit()) |
| netdev_warn(netdev, "Tx status %d\n", status); |
| stats->tx_errors += agg->skb_num; |
| } else { |
| stats->tx_packets += agg->skb_num; |
| stats->tx_bytes += agg->skb_len; |
| } |
| |
| spin_lock_irqsave(&tp->tx_lock, flags); |
| list_add_tail(&agg->list, &tp->tx_free); |
| spin_unlock_irqrestore(&tp->tx_lock, flags); |
| |
| usb_autopm_put_interface_async(tp->intf); |
| |
| if (!netif_carrier_ok(netdev)) |
| return; |
| |
| if (!test_bit(WORK_ENABLE, &tp->flags)) |
| return; |
| |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| return; |
| |
| if (!skb_queue_empty(&tp->tx_queue)) |
| tasklet_schedule(&tp->tx_tl); |
| } |
| |
| static void intr_callback(struct urb *urb) |
| { |
| struct r8152 *tp; |
| __le16 *d; |
| int status = urb->status; |
| int res; |
| |
| tp = urb->context; |
| if (!tp) |
| return; |
| |
| if (!test_bit(WORK_ENABLE, &tp->flags)) |
| return; |
| |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| return; |
| |
| switch (status) { |
| case 0: /* success */ |
| break; |
| case -ECONNRESET: /* unlink */ |
| case -ESHUTDOWN: |
| netif_device_detach(tp->netdev); |
| /* fall through */ |
| case -ENOENT: |
| case -EPROTO: |
| netif_info(tp, intr, tp->netdev, |
| "Stop submitting intr, status %d\n", status); |
| 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])) { |
| if (!netif_carrier_ok(tp->netdev)) { |
| set_bit(RTL8152_LINK_CHG, &tp->flags); |
| schedule_delayed_work(&tp->schedule, 0); |
| } |
| } else { |
| if (netif_carrier_ok(tp->netdev)) { |
| netif_stop_queue(tp->netdev); |
| set_bit(RTL8152_LINK_CHG, &tp->flags); |
| schedule_delayed_work(&tp->schedule, 0); |
| } |
| } |
| |
| resubmit: |
| res = usb_submit_urb(urb, GFP_ATOMIC); |
| if (res == -ENODEV) { |
| rtl_set_unplug(tp); |
| netif_device_detach(tp->netdev); |
| } else if (res) { |
| netif_err(tp, intr, tp->netdev, |
| "can't resubmit intr, status %d\n", res); |
| } |
| } |
| |
| static inline void *rx_agg_align(void *data) |
| { |
| return (void *)ALIGN((uintptr_t)data, RX_ALIGN); |
| } |
| |
| static inline void *tx_agg_align(void *data) |
| { |
| return (void *)ALIGN((uintptr_t)data, TX_ALIGN); |
| } |
| |
| static void free_rx_agg(struct r8152 *tp, struct rx_agg *agg) |
| { |
| list_del(&agg->info_list); |
| |
| usb_free_urb(agg->urb); |
| put_page(agg->page); |
| kfree(agg); |
| |
| atomic_dec(&tp->rx_count); |
| } |
| |
| static struct rx_agg *alloc_rx_agg(struct r8152 *tp, gfp_t mflags) |
| { |
| struct net_device *netdev = tp->netdev; |
| int node = netdev->dev.parent ? dev_to_node(netdev->dev.parent) : -1; |
| unsigned int order = get_order(tp->rx_buf_sz); |
| struct rx_agg *rx_agg; |
| unsigned long flags; |
| |
| rx_agg = kmalloc_node(sizeof(*rx_agg), mflags, node); |
| if (!rx_agg) |
| return NULL; |
| |
| rx_agg->page = alloc_pages(mflags | __GFP_COMP, order); |
| if (!rx_agg->page) |
| goto free_rx; |
| |
| rx_agg->buffer = page_address(rx_agg->page); |
| |
| rx_agg->urb = usb_alloc_urb(0, mflags); |
| if (!rx_agg->urb) |
| goto free_buf; |
| |
| rx_agg->context = tp; |
| |
| INIT_LIST_HEAD(&rx_agg->list); |
| INIT_LIST_HEAD(&rx_agg->info_list); |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| list_add_tail(&rx_agg->info_list, &tp->rx_info); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| atomic_inc(&tp->rx_count); |
| |
| return rx_agg; |
| |
| free_buf: |
| __free_pages(rx_agg->page, order); |
| free_rx: |
| kfree(rx_agg); |
| return NULL; |
| } |
| |
| static void free_all_mem(struct r8152 *tp) |
| { |
| struct rx_agg *agg, *agg_next; |
| unsigned long flags; |
| int i; |
| |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| |
| list_for_each_entry_safe(agg, agg_next, &tp->rx_info, info_list) |
| free_rx_agg(tp, agg); |
| |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| WARN_ON(atomic_read(&tp->rx_count)); |
| |
| for (i = 0; i < RTL8152_MAX_TX; i++) { |
| usb_free_urb(tp->tx_info[i].urb); |
| tp->tx_info[i].urb = NULL; |
| |
| kfree(tp->tx_info[i].buffer); |
| tp->tx_info[i].buffer = NULL; |
| tp->tx_info[i].head = NULL; |
| } |
| |
| usb_free_urb(tp->intr_urb); |
| tp->intr_urb = NULL; |
| |
| kfree(tp->intr_buff); |
| tp->intr_buff = NULL; |
| } |
| |
| static int alloc_all_mem(struct r8152 *tp) |
| { |
| struct net_device *netdev = tp->netdev; |
| struct usb_interface *intf = tp->intf; |
| struct usb_host_interface *alt = intf->cur_altsetting; |
| struct usb_host_endpoint *ep_intr = alt->endpoint + 2; |
| int node, i; |
| |
| node = netdev->dev.parent ? dev_to_node(netdev->dev.parent) : -1; |
| |
| spin_lock_init(&tp->rx_lock); |
| spin_lock_init(&tp->tx_lock); |
| INIT_LIST_HEAD(&tp->rx_info); |
| INIT_LIST_HEAD(&tp->tx_free); |
| INIT_LIST_HEAD(&tp->rx_done); |
| skb_queue_head_init(&tp->tx_queue); |
| skb_queue_head_init(&tp->rx_queue); |
| atomic_set(&tp->rx_count, 0); |
| |
| for (i = 0; i < RTL8152_MAX_RX; i++) { |
| if (!alloc_rx_agg(tp, GFP_KERNEL)) |
| goto err1; |
| } |
| |
| for (i = 0; i < RTL8152_MAX_TX; i++) { |
| struct urb *urb; |
| u8 *buf; |
| |
| buf = kmalloc_node(agg_buf_sz, GFP_KERNEL, node); |
| if (!buf) |
| goto err1; |
| |
| if (buf != tx_agg_align(buf)) { |
| kfree(buf); |
| buf = kmalloc_node(agg_buf_sz + TX_ALIGN, GFP_KERNEL, |
| node); |
| if (!buf) |
| goto err1; |
| } |
| |
| urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!urb) { |
| kfree(buf); |
| goto err1; |
| } |
| |
| INIT_LIST_HEAD(&tp->tx_info[i].list); |
| tp->tx_info[i].context = tp; |
| tp->tx_info[i].urb = urb; |
| tp->tx_info[i].buffer = buf; |
| tp->tx_info[i].head = tx_agg_align(buf); |
| |
| list_add_tail(&tp->tx_info[i].list, &tp->tx_free); |
| } |
| |
| tp->intr_urb = usb_alloc_urb(0, GFP_KERNEL); |
| if (!tp->intr_urb) |
| goto err1; |
| |
| tp->intr_buff = kmalloc(INTBUFSIZE, GFP_KERNEL); |
| if (!tp->intr_buff) |
| goto err1; |
| |
| tp->intr_interval = (int)ep_intr->desc.bInterval; |
| usb_fill_int_urb(tp->intr_urb, tp->udev, usb_rcvintpipe(tp->udev, 3), |
| tp->intr_buff, INTBUFSIZE, intr_callback, |
| tp, tp->intr_interval); |
| |
| return 0; |
| |
| err1: |
| free_all_mem(tp); |
| return -ENOMEM; |
| } |
| |
| static struct tx_agg *r8152_get_tx_agg(struct r8152 *tp) |
| { |
| struct tx_agg *agg = NULL; |
| unsigned long flags; |
| |
| if (list_empty(&tp->tx_free)) |
| return NULL; |
| |
| spin_lock_irqsave(&tp->tx_lock, flags); |
| if (!list_empty(&tp->tx_free)) { |
| struct list_head *cursor; |
| |
| cursor = tp->tx_free.next; |
| list_del_init(cursor); |
| agg = list_entry(cursor, struct tx_agg, list); |
| } |
| spin_unlock_irqrestore(&tp->tx_lock, flags); |
| |
| return agg; |
| } |
| |
| /* r8152_csum_workaround() |
| * The hw 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; |
| |
| features &= ~(NETIF_F_SG | NETIF_F_IPV6_CSUM | NETIF_F_TSO6); |
| segs = skb_gso_segment(skb, features); |
| if (IS_ERR(segs) || !segs) |
| goto drop; |
| |
| __skb_queue_head_init(&seg_list); |
| |
| 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); |
| } |
| } |
| |
| /* msdn_giant_send_check() |
| * 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; |
| int ret; |
| |
| ret = skb_cow_head(skb, 0); |
| if (ret) |
| return ret; |
| |
| ipv6h = ipv6_hdr(skb); |
| th = tcp_hdr(skb); |
| |
| th->check = 0; |
| th->check = ~tcp_v6_check(0, &ipv6h->saddr, &ipv6h->daddr, 0); |
| |
| return ret; |
| } |
| |
| static inline void rtl_tx_vlan_tag(struct tx_desc *desc, struct sk_buff *skb) |
| { |
| if (skb_vlan_tag_present(skb)) { |
| u32 opts2; |
| |
| opts2 = TX_VLAN_TAG | swab16(skb_vlan_tag_get(skb)); |
| desc->opts2 |= cpu_to_le32(opts2); |
| } |
| } |
| |
| static inline void rtl_rx_vlan_tag(struct rx_desc *desc, struct sk_buff *skb) |
| { |
| u32 opts2 = le32_to_cpu(desc->opts2); |
| |
| if (opts2 & RX_VLAN_TAG) |
| __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), |
| swab16(opts2 & 0xffff)); |
| } |
| |
| static int r8152_tx_csum(struct r8152 *tp, struct tx_desc *desc, |
| struct sk_buff *skb, u32 len, u32 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) { |
| if (transport_offset > GTTCPHO_MAX) { |
| netif_warn(tp, tx_err, tp->netdev, |
| "Invalid transport offset 0x%x for TSO\n", |
| transport_offset); |
| ret = TX_CSUM_TSO; |
| goto unavailable; |
| } |
| |
| switch (vlan_get_protocol(skb)) { |
| case htons(ETH_P_IP): |
| opts1 |= GTSENDV4; |
| break; |
| |
| case htons(ETH_P_IPV6): |
| if (msdn_giant_send_check(skb)) { |
| ret = TX_CSUM_TSO; |
| goto unavailable; |
| } |
| opts1 |= GTSENDV6; |
| break; |
| |
| default: |
| WARN_ON_ONCE(1); |
| break; |
| } |
| |
| opts1 |= transport_offset << GTTCPHO_SHIFT; |
| opts2 |= min(mss, MSS_MAX) << MSS_SHIFT; |
| } else if (skb->ip_summed == CHECKSUM_PARTIAL) { |
| u8 ip_protocol; |
| |
| if (transport_offset > TCPHO_MAX) { |
| netif_warn(tp, tx_err, tp->netdev, |
| "Invalid transport offset 0x%x\n", |
| transport_offset); |
| ret = TX_CSUM_NONE; |
| goto unavailable; |
| } |
| |
| switch (vlan_get_protocol(skb)) { |
| case htons(ETH_P_IP): |
| opts2 |= IPV4_CS; |
| ip_protocol = ip_hdr(skb)->protocol; |
| break; |
| |
| case htons(ETH_P_IPV6): |
| opts2 |= IPV6_CS; |
| ip_protocol = ipv6_hdr(skb)->nexthdr; |
| break; |
| |
| default: |
| ip_protocol = IPPROTO_RAW; |
| break; |
| } |
| |
| if (ip_protocol == IPPROTO_TCP) |
| opts2 |= TCP_CS; |
| else if (ip_protocol == IPPROTO_UDP) |
| opts2 |= UDP_CS; |
| else |
| WARN_ON_ONCE(1); |
| |
| opts2 |= transport_offset << TCPHO_SHIFT; |
| } |
| |
| desc->opts2 = cpu_to_le32(opts2); |
| desc->opts1 = cpu_to_le32(opts1); |
| |
| unavailable: |
| return ret; |
| } |
| |
| static int r8152_tx_agg_fill(struct r8152 *tp, struct tx_agg *agg) |
| { |
| struct sk_buff_head skb_head, *tx_queue = &tp->tx_queue; |
| int remain, ret; |
| u8 *tx_data; |
| |
| __skb_queue_head_init(&skb_head); |
| spin_lock(&tx_queue->lock); |
| skb_queue_splice_init(tx_queue, &skb_head); |
| spin_unlock(&tx_queue->lock); |
| |
| tx_data = agg->head; |
| agg->skb_num = 0; |
| agg->skb_len = 0; |
| remain = agg_buf_sz; |
| |
| while (remain >= ETH_ZLEN + sizeof(struct tx_desc)) { |
| struct tx_desc *tx_desc; |
| struct sk_buff *skb; |
| unsigned int len; |
| u32 offset; |
| |
| skb = __skb_dequeue(&skb_head); |
| if (!skb) |
| break; |
| |
| len = skb->len + sizeof(*tx_desc); |
| |
| if (len > remain) { |
| __skb_queue_head(&skb_head, skb); |
| break; |
| } |
| |
| tx_data = tx_agg_align(tx_data); |
| tx_desc = (struct tx_desc *)tx_data; |
| |
| offset = (u32)skb_transport_offset(skb); |
| |
| if (r8152_tx_csum(tp, tx_desc, skb, skb->len, offset)) { |
| r8152_csum_workaround(tp, skb, &skb_head); |
| continue; |
| } |
| |
| rtl_tx_vlan_tag(tx_desc, skb); |
| |
| tx_data += sizeof(*tx_desc); |
| |
| len = skb->len; |
| if (skb_copy_bits(skb, 0, tx_data, len) < 0) { |
| struct net_device_stats *stats = &tp->netdev->stats; |
| |
| stats->tx_dropped++; |
| dev_kfree_skb_any(skb); |
| tx_data -= sizeof(*tx_desc); |
| continue; |
| } |
| |
| tx_data += len; |
| agg->skb_len += len; |
| agg->skb_num += skb_shinfo(skb)->gso_segs ?: 1; |
| |
| dev_kfree_skb_any(skb); |
| |
| remain = agg_buf_sz - (int)(tx_agg_align(tx_data) - agg->head); |
| |
| if (test_bit(DELL_TB_RX_AGG_BUG, &tp->flags)) |
| break; |
| } |
| |
| if (!skb_queue_empty(&skb_head)) { |
| spin_lock(&tx_queue->lock); |
| skb_queue_splice(&skb_head, tx_queue); |
| spin_unlock(&tx_queue->lock); |
| } |
| |
| netif_tx_lock(tp->netdev); |
| |
| if (netif_queue_stopped(tp->netdev) && |
| skb_queue_len(&tp->tx_queue) < tp->tx_qlen) |
| netif_wake_queue(tp->netdev); |
| |
| netif_tx_unlock(tp->netdev); |
| |
| ret = usb_autopm_get_interface_async(tp->intf); |
| if (ret < 0) |
| goto out_tx_fill; |
| |
| usb_fill_bulk_urb(agg->urb, tp->udev, usb_sndbulkpipe(tp->udev, 2), |
| agg->head, (int)(tx_data - (u8 *)agg->head), |
| (usb_complete_t)write_bulk_callback, agg); |
| |
| ret = usb_submit_urb(agg->urb, GFP_ATOMIC); |
| if (ret < 0) |
| usb_autopm_put_interface_async(tp->intf); |
| |
| out_tx_fill: |
| return ret; |
| } |
| |
| static u8 r8152_rx_csum(struct r8152 *tp, struct rx_desc *rx_desc) |
| { |
| u8 checksum = CHECKSUM_NONE; |
| u32 opts2, opts3; |
| |
| if (!(tp->netdev->features & NETIF_F_RXCSUM)) |
| goto return_result; |
| |
| opts2 = le32_to_cpu(rx_desc->opts2); |
| opts3 = le32_to_cpu(rx_desc->opts3); |
| |
| if (opts2 & RD_IPV4_CS) { |
| if (opts3 & IPF) |
| checksum = CHECKSUM_NONE; |
| else if ((opts2 & RD_UDP_CS) && !(opts3 & UDPF)) |
| checksum = CHECKSUM_UNNECESSARY; |
| else if ((opts2 & RD_TCP_CS) && !(opts3 & TCPF)) |
| checksum = CHECKSUM_UNNECESSARY; |
| } else if (opts2 & RD_IPV6_CS) { |
| if ((opts2 & RD_UDP_CS) && !(opts3 & UDPF)) |
| checksum = CHECKSUM_UNNECESSARY; |
| else if ((opts2 & RD_TCP_CS) && !(opts3 & TCPF)) |
| checksum = CHECKSUM_UNNECESSARY; |
| } |
| |
| return_result: |
| return checksum; |
| } |
| |
| static inline bool rx_count_exceed(struct r8152 *tp) |
| { |
| return atomic_read(&tp->rx_count) > RTL8152_MAX_RX; |
| } |
| |
| static inline int agg_offset(struct rx_agg *agg, void *addr) |
| { |
| return (int)(addr - agg->buffer); |
| } |
| |
| static struct rx_agg *rtl_get_free_rx(struct r8152 *tp, gfp_t mflags) |
| { |
| struct rx_agg *agg, *agg_next, *agg_free = NULL; |
| unsigned long flags; |
| |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| |
| list_for_each_entry_safe(agg, agg_next, &tp->rx_used, list) { |
| if (page_count(agg->page) == 1) { |
| if (!agg_free) { |
| list_del_init(&agg->list); |
| agg_free = agg; |
| continue; |
| } |
| if (rx_count_exceed(tp)) { |
| list_del_init(&agg->list); |
| free_rx_agg(tp, agg); |
| } |
| break; |
| } |
| } |
| |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| if (!agg_free && atomic_read(&tp->rx_count) < tp->rx_pending) |
| agg_free = alloc_rx_agg(tp, mflags); |
| |
| return agg_free; |
| } |
| |
| static int rx_bottom(struct r8152 *tp, int budget) |
| { |
| unsigned long flags; |
| struct list_head *cursor, *next, rx_queue; |
| int ret = 0, work_done = 0; |
| struct napi_struct *napi = &tp->napi; |
| |
| if (!skb_queue_empty(&tp->rx_queue)) { |
| while (work_done < budget) { |
| struct sk_buff *skb = __skb_dequeue(&tp->rx_queue); |
| struct net_device *netdev = tp->netdev; |
| struct net_device_stats *stats = &netdev->stats; |
| unsigned int pkt_len; |
| |
| if (!skb) |
| break; |
| |
| pkt_len = skb->len; |
| napi_gro_receive(napi, skb); |
| work_done++; |
| stats->rx_packets++; |
| stats->rx_bytes += pkt_len; |
| } |
| } |
| |
| if (list_empty(&tp->rx_done)) |
| goto out1; |
| |
| INIT_LIST_HEAD(&rx_queue); |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| list_splice_init(&tp->rx_done, &rx_queue); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| list_for_each_safe(cursor, next, &rx_queue) { |
| struct rx_desc *rx_desc; |
| struct rx_agg *agg, *agg_free; |
| int len_used = 0; |
| struct urb *urb; |
| u8 *rx_data; |
| |
| list_del_init(cursor); |
| |
| agg = list_entry(cursor, struct rx_agg, list); |
| urb = agg->urb; |
| if (urb->actual_length < ETH_ZLEN) |
| goto submit; |
| |
| agg_free = rtl_get_free_rx(tp, GFP_ATOMIC); |
| |
| rx_desc = agg->buffer; |
| rx_data = agg->buffer; |
| len_used += sizeof(struct rx_desc); |
| |
| while (urb->actual_length > len_used) { |
| struct net_device *netdev = tp->netdev; |
| struct net_device_stats *stats = &netdev->stats; |
| unsigned int pkt_len, rx_frag_head_sz; |
| struct sk_buff *skb; |
| |
| /* limite the skb numbers for rx_queue */ |
| if (unlikely(skb_queue_len(&tp->rx_queue) >= 1000)) |
| break; |
| |
| pkt_len = le32_to_cpu(rx_desc->opts1) & RX_LEN_MASK; |
| if (pkt_len < ETH_ZLEN) |
| break; |
| |
| len_used += pkt_len; |
| if (urb->actual_length < len_used) |
| break; |
| |
| pkt_len -= ETH_FCS_LEN; |
| rx_data += sizeof(struct rx_desc); |
| |
| if (!agg_free || tp->rx_copybreak > pkt_len) |
| rx_frag_head_sz = pkt_len; |
| else |
| rx_frag_head_sz = tp->rx_copybreak; |
| |
| skb = napi_alloc_skb(napi, rx_frag_head_sz); |
| if (!skb) { |
| stats->rx_dropped++; |
| goto find_next_rx; |
| } |
| |
| skb->ip_summed = r8152_rx_csum(tp, rx_desc); |
| memcpy(skb->data, rx_data, rx_frag_head_sz); |
| skb_put(skb, rx_frag_head_sz); |
| pkt_len -= rx_frag_head_sz; |
| rx_data += rx_frag_head_sz; |
| if (pkt_len) { |
| skb_add_rx_frag(skb, 0, agg->page, |
| agg_offset(agg, rx_data), |
| pkt_len, |
| SKB_DATA_ALIGN(pkt_len)); |
| get_page(agg->page); |
| } |
| |
| skb->protocol = eth_type_trans(skb, netdev); |
| rtl_rx_vlan_tag(rx_desc, skb); |
| if (work_done < budget) { |
| work_done++; |
| stats->rx_packets++; |
| stats->rx_bytes += skb->len; |
| napi_gro_receive(napi, skb); |
| } else { |
| __skb_queue_tail(&tp->rx_queue, skb); |
| } |
| |
| find_next_rx: |
| rx_data = rx_agg_align(rx_data + pkt_len + ETH_FCS_LEN); |
| rx_desc = (struct rx_desc *)rx_data; |
| len_used = agg_offset(agg, rx_data); |
| len_used += sizeof(struct rx_desc); |
| } |
| |
| WARN_ON(!agg_free && page_count(agg->page) > 1); |
| |
| if (agg_free) { |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| if (page_count(agg->page) == 1) { |
| list_add(&agg_free->list, &tp->rx_used); |
| } else { |
| list_add_tail(&agg->list, &tp->rx_used); |
| agg = agg_free; |
| urb = agg->urb; |
| } |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| } |
| |
| submit: |
| if (!ret) { |
| ret = r8152_submit_rx(tp, agg, GFP_ATOMIC); |
| } else { |
| urb->actual_length = 0; |
| list_add_tail(&agg->list, next); |
| } |
| } |
| |
| 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); |
| } |
| |
| out1: |
| return work_done; |
| } |
| |
| static void tx_bottom(struct r8152 *tp) |
| { |
| int res; |
| |
| do { |
| struct tx_agg *agg; |
| |
| if (skb_queue_empty(&tp->tx_queue)) |
| break; |
| |
| agg = r8152_get_tx_agg(tp); |
| if (!agg) |
| break; |
| |
| res = r8152_tx_agg_fill(tp, agg); |
| if (res) { |
| struct net_device *netdev = tp->netdev; |
| |
| if (res == -ENODEV) { |
| rtl_set_unplug(tp); |
| netif_device_detach(netdev); |
| } else { |
| struct net_device_stats *stats = &netdev->stats; |
| unsigned long flags; |
| |
| netif_warn(tp, tx_err, netdev, |
| "failed tx_urb %d\n", res); |
| stats->tx_dropped += agg->skb_num; |
| |
| spin_lock_irqsave(&tp->tx_lock, flags); |
| list_add_tail(&agg->list, &tp->tx_free); |
| spin_unlock_irqrestore(&tp->tx_lock, flags); |
| } |
| } |
| } while (res == 0); |
| } |
| |
| static void bottom_half(unsigned long data) |
| { |
| struct r8152 *tp; |
| |
| tp = (struct r8152 *)data; |
| |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| return; |
| |
| if (!test_bit(WORK_ENABLE, &tp->flags)) |
| return; |
| |
| /* When link down, the driver would cancel all bulks. */ |
| /* This avoid the re-submitting bulk */ |
| if (!netif_carrier_ok(tp->netdev)) |
| return; |
| |
| clear_bit(SCHEDULE_TASKLET, &tp->flags); |
| |
| tx_bottom(tp); |
| } |
| |
| static int r8152_poll(struct napi_struct *napi, int budget) |
| { |
| struct r8152 *tp = container_of(napi, struct r8152, napi); |
| int work_done; |
| |
| work_done = rx_bottom(tp, budget); |
| |
| if (work_done < budget) { |
| if (!napi_complete_done(napi, work_done)) |
| goto out; |
| if (!list_empty(&tp->rx_done)) |
| napi_schedule(napi); |
| } |
| |
| out: |
| return work_done; |
| } |
| |
| static |
| int r8152_submit_rx(struct r8152 *tp, struct rx_agg *agg, gfp_t mem_flags) |
| { |
| int ret; |
| |
| /* The rx would be stopped, so skip submitting */ |
| if (test_bit(RTL8152_UNPLUG, &tp->flags) || |
| !test_bit(WORK_ENABLE, &tp->flags) || !netif_carrier_ok(tp->netdev)) |
| return 0; |
| |
| usb_fill_bulk_urb(agg->urb, tp->udev, usb_rcvbulkpipe(tp->udev, 1), |
| agg->buffer, tp->rx_buf_sz, |
| (usb_complete_t)read_bulk_callback, agg); |
| |
| ret = usb_submit_urb(agg->urb, mem_flags); |
| if (ret == -ENODEV) { |
| rtl_set_unplug(tp); |
| netif_device_detach(tp->netdev); |
| } else if (ret) { |
| struct urb *urb = agg->urb; |
| unsigned long flags; |
| |
| urb->actual_length = 0; |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| list_add_tail(&agg->list, &tp->rx_done); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| netif_err(tp, rx_err, tp->netdev, |
| "Couldn't submit rx[%p], ret = %d\n", agg, ret); |
| |
| napi_schedule(&tp->napi); |
| } |
| |
| return ret; |
| } |
| |
| static void rtl_drop_queued_tx(struct r8152 *tp) |
| { |
| struct net_device_stats *stats = &tp->netdev->stats; |
| struct sk_buff_head skb_head, *tx_queue = &tp->tx_queue; |
| struct sk_buff *skb; |
| |
| if (skb_queue_empty(tx_queue)) |
| return; |
| |
| __skb_queue_head_init(&skb_head); |
| spin_lock_bh(&tx_queue->lock); |
| skb_queue_splice_init(tx_queue, &skb_head); |
| spin_unlock_bh(&tx_queue->lock); |
| |
| while ((skb = __skb_dequeue(&skb_head))) { |
| dev_kfree_skb(skb); |
| stats->tx_dropped++; |
| } |
| } |
| |
| static void rtl8152_tx_timeout(struct net_device *netdev) |
| { |
| struct r8152 *tp = netdev_priv(netdev); |
| |
| netif_warn(tp, tx_err, netdev, "Tx timeout\n"); |
| |
| usb_queue_reset_device(tp->intf); |
| } |
| |
| static void rtl8152_set_rx_mode(struct net_device *netdev) |
| { |
| struct r8152 *tp = netdev_priv(netdev); |
| |
| if (netif_carrier_ok(netdev)) { |
| set_bit(RTL8152_SET_RX_MODE, &tp->flags); |
| schedule_delayed_work(&tp->schedule, 0); |
| } |
| } |
| |
| static void _rtl8152_set_rx_mode(struct net_device *netdev) |
| { |
| struct r8152 *tp = netdev_priv(netdev); |
| u32 mc_filter[2]; /* Multicast hash filter */ |
| __le32 tmp[2]; |
| u32 ocp_data; |
| |
| netif_stop_queue(netdev); |
| ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR); |
| ocp_data &= ~RCR_ACPT_ALL; |
| ocp_data |= RCR_AB | RCR_APM; |
| |
| if (netdev->flags & IFF_PROMISC) { |
| /* Unconditionally log net taps. */ |
| netif_notice(tp, link, netdev, "Promiscuous mode enabled\n"); |
| ocp_data |= RCR_AM | RCR_AAP; |
| mc_filter[1] = 0xffffffff; |
| mc_filter[0] = 0xffffffff; |
| } else if ((netdev_mc_count(netdev) > multicast_filter_limit) || |
| (netdev->flags & IFF_ALLMULTI)) { |
| /* Too many to filter perfectly -- accept all multicasts. */ |
| ocp_data |= RCR_AM; |
| mc_filter[1] = 0xffffffff; |
| mc_filter[0] = 0xffffffff; |
| } else { |
| struct netdev_hw_addr *ha; |
| |
| mc_filter[1] = 0; |
| mc_filter[0] = 0; |
| netdev_for_each_mc_addr(ha, netdev) { |
| int bit_nr = ether_crc(ETH_ALEN, ha->addr) >> 26; |
| |
| mc_filter[bit_nr >> 5] |= 1 << (bit_nr & 31); |
| ocp_data |= RCR_AM; |
| } |
| } |
| |
| tmp[0] = __cpu_to_le32(swab32(mc_filter[1])); |
| tmp[1] = __cpu_to_le32(swab32(mc_filter[0])); |
| |
| pla_ocp_write(tp, PLA_MAR, BYTE_EN_DWORD, sizeof(tmp), tmp); |
| ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data); |
| netif_wake_queue(netdev); |
| } |
| |
| static netdev_features_t |
| rtl8152_features_check(struct sk_buff *skb, struct net_device *dev, |
| netdev_features_t features) |
| { |
| u32 mss = skb_shinfo(skb)->gso_size; |
| int max_offset = mss ? GTTCPHO_MAX : TCPHO_MAX; |
| int offset = skb_transport_offset(skb); |
| |
| if ((mss || skb->ip_summed == CHECKSUM_PARTIAL) && offset > max_offset) |
| features &= ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK); |
| else if ((skb->len + sizeof(struct tx_desc)) > agg_buf_sz) |
| features &= ~NETIF_F_GSO_MASK; |
| |
| return features; |
| } |
| |
| static netdev_tx_t rtl8152_start_xmit(struct sk_buff *skb, |
| struct net_device *netdev) |
| { |
| struct r8152 *tp = netdev_priv(netdev); |
| |
| skb_tx_timestamp(skb); |
| |
| skb_queue_tail(&tp->tx_queue, skb); |
| |
| if (!list_empty(&tp->tx_free)) { |
| if (test_bit(SELECTIVE_SUSPEND, &tp->flags)) { |
| set_bit(SCHEDULE_TASKLET, &tp->flags); |
| schedule_delayed_work(&tp->schedule, 0); |
| } else { |
| usb_mark_last_busy(tp->udev); |
| tasklet_schedule(&tp->tx_tl); |
| } |
| } else if (skb_queue_len(&tp->tx_queue) > tp->tx_qlen) { |
| netif_stop_queue(netdev); |
| } |
| |
| return NETDEV_TX_OK; |
| } |
| |
| static void r8152b_reset_packet_filter(struct r8152 *tp) |
| { |
| u32 ocp_data; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_FMC); |
| ocp_data &= ~FMC_FCR_MCU_EN; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_FMC, ocp_data); |
| ocp_data |= FMC_FCR_MCU_EN; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_FMC, ocp_data); |
| } |
| |
| static void rtl8152_nic_reset(struct r8152 *tp) |
| { |
| 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; |
| usleep_range(100, 400); |
| } |
| } |
| |
| static void set_tx_qlen(struct r8152 *tp) |
| { |
| struct net_device *netdev = tp->netdev; |
| |
| tp->tx_qlen = agg_buf_sz / (netdev->mtu + VLAN_ETH_HLEN + ETH_FCS_LEN + |
| sizeof(struct tx_desc)); |
| } |
| |
| static inline u8 rtl8152_get_speed(struct r8152 *tp) |
| { |
| return ocp_read_byte(tp, MCU_TYPE_PLA, PLA_PHYSTATUS); |
| } |
| |
| static void rtl_set_eee_plus(struct r8152 *tp) |
| { |
| u32 ocp_data; |
| u8 speed; |
| |
| speed = rtl8152_get_speed(tp); |
| if (speed & _10bps) { |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR); |
| ocp_data |= EEEP_CR_EEEP_TX; |
| 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); |
| ocp_data &= ~EEEP_CR_EEEP_TX; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_EEEP_CR, ocp_data); |
| } |
| } |
| |
| static void rxdy_gated_en(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_MISC_1); |
| if (enable) |
| ocp_data |= RXDY_GATED_EN; |
| else |
| ocp_data &= ~RXDY_GATED_EN; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_MISC_1, ocp_data); |
| } |
| |
| static int rtl_start_rx(struct r8152 *tp) |
| { |
| struct rx_agg *agg, *agg_next; |
| struct list_head tmp_list; |
| unsigned long flags; |
| int ret = 0, i = 0; |
| |
| INIT_LIST_HEAD(&tmp_list); |
| |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| |
| INIT_LIST_HEAD(&tp->rx_done); |
| INIT_LIST_HEAD(&tp->rx_used); |
| |
| list_splice_init(&tp->rx_info, &tmp_list); |
| |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| list_for_each_entry_safe(agg, agg_next, &tmp_list, info_list) { |
| INIT_LIST_HEAD(&agg->list); |
| |
| /* Only RTL8152_MAX_RX rx_agg need to be submitted. */ |
| if (++i > RTL8152_MAX_RX) { |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| list_add_tail(&agg->list, &tp->rx_used); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| } else if (unlikely(ret < 0)) { |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| list_add_tail(&agg->list, &tp->rx_done); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| } else { |
| ret = r8152_submit_rx(tp, agg, GFP_KERNEL); |
| } |
| } |
| |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| WARN_ON(!list_empty(&tp->rx_info)); |
| list_splice(&tmp_list, &tp->rx_info); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| return ret; |
| } |
| |
| static int rtl_stop_rx(struct r8152 *tp) |
| { |
| struct rx_agg *agg, *agg_next; |
| struct list_head tmp_list; |
| unsigned long flags; |
| |
| INIT_LIST_HEAD(&tmp_list); |
| |
| /* The usb_kill_urb() couldn't be used in atomic. |
| * Therefore, move the list of rx_info to a tmp one. |
| * Then, list_for_each_entry_safe could be used without |
| * spin lock. |
| */ |
| |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| list_splice_init(&tp->rx_info, &tmp_list); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| list_for_each_entry_safe(agg, agg_next, &tmp_list, info_list) { |
| /* At least RTL8152_MAX_RX rx_agg have the page_count being |
| * equal to 1, so the other ones could be freed safely. |
| */ |
| if (page_count(agg->page) > 1) |
| free_rx_agg(tp, agg); |
| else |
| usb_kill_urb(agg->urb); |
| } |
| |
| /* Move back the list of temp to the rx_info */ |
| spin_lock_irqsave(&tp->rx_lock, flags); |
| WARN_ON(!list_empty(&tp->rx_info)); |
| list_splice(&tmp_list, &tp->rx_info); |
| spin_unlock_irqrestore(&tp->rx_lock, flags); |
| |
| while (!skb_queue_empty(&tp->rx_queue)) |
| dev_kfree_skb(__skb_dequeue(&tp->rx_queue)); |
| |
| return 0; |
| } |
| |
| static inline void r8153b_rx_agg_chg_indicate(struct r8152 *tp) |
| { |
| ocp_write_byte(tp, MCU_TYPE_USB, USB_UPT_RXDMA_OWN, |
| OWN_UPDATE | OWN_CLEAR); |
| } |
| |
| static int rtl_enable(struct r8152 *tp) |
| { |
| u32 ocp_data; |
| |
| r8152b_reset_packet_filter(tp); |
| |
| ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_CR); |
| ocp_data |= CR_RE | CR_TE; |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CR, ocp_data); |
| |
| switch (tp->version) { |
| case RTL_VER_08: |
| case RTL_VER_09: |
| r8153b_rx_agg_chg_indicate(tp); |
| break; |
| default: |
| break; |
| } |
| |
| rxdy_gated_en(tp, false); |
| |
| return 0; |
| } |
| |
| static int rtl8152_enable(struct r8152 *tp) |
| { |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| return -ENODEV; |
| |
| set_tx_qlen(tp); |
| rtl_set_eee_plus(tp); |
| |
| return rtl_enable(tp); |
| } |
| |
| static void r8153_set_rx_early_timeout(struct r8152 *tp) |
| { |
| u32 ocp_data = tp->coalesce / 8; |
| |
| switch (tp->version) { |
| case RTL_VER_03: |
| case RTL_VER_04: |
| case RTL_VER_05: |
| case RTL_VER_06: |
| ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_TIMEOUT, |
| ocp_data); |
| break; |
| |
| case RTL_VER_08: |
| case RTL_VER_09: |
| /* The RTL8153B uses USB_RX_EXTRA_AGGR_TMR for rx timeout |
| * primarily. For USB_RX_EARLY_TIMEOUT, we fix it to 128ns. |
| */ |
| ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_TIMEOUT, |
| 128 / 8); |
| ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EXTRA_AGGR_TMR, |
| ocp_data); |
| break; |
| |
| default: |
| break; |
| } |
| } |
| |
| static void r8153_set_rx_early_size(struct r8152 *tp) |
| { |
| u32 ocp_data = tp->rx_buf_sz - rx_reserved_size(tp->netdev->mtu); |
| |
| switch (tp->version) { |
| case RTL_VER_03: |
| case RTL_VER_04: |
| case RTL_VER_05: |
| case RTL_VER_06: |
| ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_SIZE, |
| ocp_data / 4); |
| break; |
| case RTL_VER_08: |
| case RTL_VER_09: |
| ocp_write_word(tp, MCU_TYPE_USB, USB_RX_EARLY_SIZE, |
| ocp_data / 8); |
| break; |
| default: |
| WARN_ON_ONCE(1); |
| break; |
| } |
| } |
| |
| static int rtl8153_enable(struct r8152 *tp) |
| { |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| return -ENODEV; |
| |
| set_tx_qlen(tp); |
| rtl_set_eee_plus(tp); |
| r8153_set_rx_early_timeout(tp); |
| r8153_set_rx_early_size(tp); |
| |
| return rtl_enable(tp); |
| } |
| |
| static void rtl_disable(struct r8152 *tp) |
| { |
| u32 ocp_data; |
| int i; |
| |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) { |
| rtl_drop_queued_tx(tp); |
| return; |
| } |
| |
| ocp_data = ocp_read_dword(tp, MCU_TYPE_PLA, PLA_RCR); |
| ocp_data &= ~RCR_ACPT_ALL; |
| ocp_write_dword(tp, MCU_TYPE_PLA, PLA_RCR, ocp_data); |
| |
| rtl_drop_queued_tx(tp); |
| |
| for (i = 0; i < RTL8152_MAX_TX; i++) |
| usb_kill_urb(tp->tx_info[i].urb); |
| |
| rxdy_gated_en(tp, true); |
| |
| for (i = 0; i < 1000; i++) { |
| ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_OOB_CTRL); |
| if ((ocp_data & FIFO_EMPTY) == FIFO_EMPTY) |
| break; |
| usleep_range(1000, 2000); |
| } |
| |
| for (i = 0; i < 1000; i++) { |
| if (ocp_read_word(tp, MCU_TYPE_PLA, PLA_TCR0) & TCR0_TX_EMPTY) |
| break; |
| usleep_range(1000, 2000); |
| } |
| |
| rtl_stop_rx(tp); |
| |
| rtl8152_nic_reset(tp); |
| } |
| |
| static void r8152_power_cut_en(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_UPS_CTRL); |
| if (enable) |
| ocp_data |= POWER_CUT; |
| else |
| ocp_data &= ~POWER_CUT; |
| ocp_write_word(tp, MCU_TYPE_USB, USB_UPS_CTRL, ocp_data); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_PM_CTRL_STATUS); |
| ocp_data &= ~RESUME_INDICATE; |
| ocp_write_word(tp, MCU_TYPE_USB, USB_PM_CTRL_STATUS, ocp_data); |
| } |
| |
| static void rtl_rx_vlan_en(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data; |
| |
| 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); |
| int ret; |
| |
| ret = usb_autopm_get_interface(tp->intf); |
| if (ret < 0) |
| goto out; |
| |
| mutex_lock(&tp->control); |
| |
| if (changed & NETIF_F_HW_VLAN_CTAG_RX) { |
| if (features & NETIF_F_HW_VLAN_CTAG_RX) |
| rtl_rx_vlan_en(tp, true); |
| else |
| rtl_rx_vlan_en(tp, false); |
| } |
| |
| mutex_unlock(&tp->control); |
| |
| usb_autopm_put_interface(tp->intf); |
| |
| out: |
| return ret; |
| } |
| |
| #define WAKE_ANY (WAKE_PHY | WAKE_MAGIC | WAKE_UCAST | WAKE_BCAST | WAKE_MCAST) |
| |
| static u32 __rtl_get_wol(struct r8152 *tp) |
| { |
| u32 ocp_data; |
| u32 wolopts = 0; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34); |
| if (ocp_data & LINK_ON_WAKE_EN) |
| wolopts |= WAKE_PHY; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG5); |
| if (ocp_data & UWF_EN) |
| wolopts |= WAKE_UCAST; |
| if (ocp_data & BWF_EN) |
| wolopts |= WAKE_BCAST; |
| if (ocp_data & MWF_EN) |
| wolopts |= WAKE_MCAST; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CFG_WOL); |
| if (ocp_data & MAGIC_EN) |
| wolopts |= WAKE_MAGIC; |
| |
| return wolopts; |
| } |
| |
| static void __rtl_set_wol(struct r8152 *tp, u32 wolopts) |
| { |
| u32 ocp_data; |
| |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34); |
| ocp_data &= ~LINK_ON_WAKE_EN; |
| if (wolopts & WAKE_PHY) |
| ocp_data |= LINK_ON_WAKE_EN; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG34, ocp_data); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG5); |
| ocp_data &= ~(UWF_EN | BWF_EN | MWF_EN); |
| if (wolopts & WAKE_UCAST) |
| ocp_data |= UWF_EN; |
| if (wolopts & WAKE_BCAST) |
| ocp_data |= BWF_EN; |
| if (wolopts & WAKE_MCAST) |
| ocp_data |= MWF_EN; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG5, ocp_data); |
| |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CFG_WOL); |
| ocp_data &= ~MAGIC_EN; |
| if (wolopts & WAKE_MAGIC) |
| ocp_data |= MAGIC_EN; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_CFG_WOL, ocp_data); |
| |
| if (wolopts & WAKE_ANY) |
| device_set_wakeup_enable(&tp->udev->dev, true); |
| else |
| device_set_wakeup_enable(&tp->udev->dev, false); |
| } |
| |
| static void r8153_mac_clk_spd(struct r8152 *tp, bool enable) |
| { |
| /* MAC clock speed down */ |
| if (enable) { |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL, |
| ALDPS_SPDWN_RATIO); |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL2, |
| EEE_SPDWN_RATIO); |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL3, |
| PKT_AVAIL_SPDWN_EN | SUSPEND_SPDWN_EN | |
| U1U2_SPDWN_EN | L1_SPDWN_EN); |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_MAC_PWR_CTRL4, |
| PWRSAVE_SPDWN_EN | RXDV_SPDWN_EN | TX10MIDLE_EN | |
| TP100_SPDWN_EN | TP500_SPDWN_EN | EEE_SPDWN_EN | |
| TP1000_SPDWN_EN); |
| } else { |
| 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); |
| } |
| } |
| |
| static void r8153_u1u2en(struct r8152 *tp, bool enable) |
| { |
| u8 u1u2[8]; |
| |
| if (enable) |
| memset(u1u2, 0xff, sizeof(u1u2)); |
| else |
| memset(u1u2, 0x00, sizeof(u1u2)); |
| |
| usb_ocp_write(tp, USB_TOLERANCE, BYTE_EN_SIX_BYTES, sizeof(u1u2), u1u2); |
| } |
| |
| static void r8153b_u1u2en(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_LPM_CONFIG); |
| if (enable) |
| ocp_data |= LPM_U1U2_EN; |
| else |
| ocp_data &= ~LPM_U1U2_EN; |
| |
| ocp_write_word(tp, MCU_TYPE_USB, USB_LPM_CONFIG, ocp_data); |
| } |
| |
| static void r8153_u2p3en(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL); |
| if (enable) |
| ocp_data |= U2P3_ENABLE; |
| else |
| ocp_data &= ~U2P3_ENABLE; |
| ocp_write_word(tp, MCU_TYPE_USB, USB_U2P3_CTRL, ocp_data); |
| } |
| |
| static void r8153b_ups_flags(struct r8152 *tp) |
| { |
| u32 ups_flags = 0; |
| |
| if (tp->ups_info.green) |
| ups_flags |= UPS_FLAGS_EN_GREEN; |
| |
| if (tp->ups_info.aldps) |
| ups_flags |= UPS_FLAGS_EN_ALDPS; |
| |
| if (tp->ups_info.eee) |
| ups_flags |= UPS_FLAGS_EN_EEE; |
| |
| if (tp->ups_info.flow_control) |
| ups_flags |= UPS_FLAGS_EN_FLOW_CTR; |
| |
| if (tp->ups_info.eee_ckdiv) |
| ups_flags |= UPS_FLAGS_EN_EEE_CKDIV; |
| |
| if (tp->ups_info.eee_cmod_lv) |
| ups_flags |= UPS_FLAGS_EEE_CMOD_LV_EN; |
| |
| if (tp->ups_info._10m_ckdiv) |
| ups_flags |= UPS_FLAGS_EN_10M_CKDIV; |
| |
| if (tp->ups_info.eee_plloff_100) |
| ups_flags |= UPS_FLAGS_EEE_PLLOFF_100; |
| |
| if (tp->ups_info.eee_plloff_giga) |
| ups_flags |= UPS_FLAGS_EEE_PLLOFF_GIGA; |
| |
| if (tp->ups_info._250m_ckdiv) |
| ups_flags |= UPS_FLAGS_250M_CKDIV; |
| |
| if (tp->ups_info.ctap_short_off) |
| ups_flags |= UPS_FLAGS_CTAP_SHORT_DIS; |
| |
| switch (tp->ups_info.speed_duplex) { |
| case NWAY_10M_HALF: |
| ups_flags |= ups_flags_speed(1); |
| break; |
| case NWAY_10M_FULL: |
| ups_flags |= ups_flags_speed(2); |
| break; |
| case NWAY_100M_HALF: |
| ups_flags |= ups_flags_speed(3); |
| break; |
| case NWAY_100M_FULL: |
| ups_flags |= ups_flags_speed(4); |
| break; |
| case NWAY_1000M_FULL: |
| ups_flags |= ups_flags_speed(5); |
| break; |
| case FORCE_10M_HALF: |
| ups_flags |= ups_flags_speed(6); |
| break; |
| case FORCE_10M_FULL: |
| ups_flags |= ups_flags_speed(7); |
| break; |
| case FORCE_100M_HALF: |
| ups_flags |= ups_flags_speed(8); |
| break; |
| case FORCE_100M_FULL: |
| ups_flags |= ups_flags_speed(9); |
| break; |
| default: |
| break; |
| } |
| |
| ocp_write_dword(tp, MCU_TYPE_USB, USB_UPS_FLAGS, ups_flags); |
| } |
| |
| static void r8153b_green_en(struct r8152 *tp, bool enable) |
| { |
| u16 data; |
| |
| if (enable) { |
| sram_write(tp, 0x8045, 0); /* 10M abiq&ldvbias */ |
| sram_write(tp, 0x804d, 0x1222); /* 100M short abiq&ldvbias */ |
| sram_write(tp, 0x805d, 0x0022); /* 1000M short abiq&ldvbias */ |
| } else { |
| sram_write(tp, 0x8045, 0x2444); /* 10M abiq&ldvbias */ |
| sram_write(tp, 0x804d, 0x2444); /* 100M short abiq&ldvbias */ |
| sram_write(tp, 0x805d, 0x2444); /* 1000M short abiq&ldvbias */ |
| } |
| |
| data = sram_read(tp, SRAM_GREEN_CFG); |
| data |= GREEN_ETH_EN; |
| sram_write(tp, SRAM_GREEN_CFG, data); |
| |
| tp->ups_info.green = enable; |
| } |
| |
| static u16 r8153_phy_status(struct r8152 *tp, u16 desired) |
| { |
| u16 data; |
| int i; |
| |
| for (i = 0; i < 500; i++) { |
| data = ocp_reg_read(tp, OCP_PHY_STATUS); |
| data &= PHY_STAT_MASK; |
| if (desired) { |
| if (data == desired) |
| break; |
| } else if (data == PHY_STAT_LAN_ON || data == PHY_STAT_PWRDN || |
| data == PHY_STAT_EXT_INIT) { |
| break; |
| } |
| |
| msleep(20); |
| if (test_bit(RTL8152_UNPLUG, &tp->flags)) |
| break; |
| } |
| |
| return data; |
| } |
| |
| static void r8153b_ups_en(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, USB_POWER_CUT); |
| |
| if (enable) { |
| r8153b_ups_flags(tp); |
| |
| ocp_data |= UPS_EN | USP_PREWAKE | PHASE2_EN; |
| ocp_write_byte(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data); |
| |
| ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, 0xcfff); |
| ocp_data |= BIT(0); |
| ocp_write_byte(tp, MCU_TYPE_USB, 0xcfff, ocp_data); |
| } else { |
| u16 data; |
| |
| ocp_data &= ~(UPS_EN | USP_PREWAKE); |
| ocp_write_byte(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data); |
| |
| ocp_data = ocp_read_byte(tp, MCU_TYPE_USB, 0xcfff); |
| ocp_data &= ~BIT(0); |
| ocp_write_byte(tp, MCU_TYPE_USB, 0xcfff, 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); |
| |
| data = r8153_phy_status(tp, 0); |
| |
| switch (data) { |
| case PHY_STAT_PWRDN: |
| case PHY_STAT_EXT_INIT: |
| r8153b_green_en(tp, |
| test_bit(GREEN_ETHERNET, &tp->flags)); |
| |
| data = r8152_mdio_read(tp, MII_BMCR); |
| data &= ~BMCR_PDOWN; |
| data |= BMCR_RESET; |
| r8152_mdio_write(tp, MII_BMCR, data); |
| |
| data = r8153_phy_status(tp, PHY_STAT_LAN_ON); |
| /* fall through */ |
| |
| default: |
| if (data != PHY_STAT_LAN_ON) |
| netif_warn(tp, link, tp->netdev, |
| "PHY not ready"); |
| break; |
| } |
| } |
| } |
| |
| static void r8153_power_cut_en(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_POWER_CUT); |
| if (enable) |
| ocp_data |= PWR_EN | PHASE2_EN; |
| else |
| ocp_data &= ~(PWR_EN | PHASE2_EN); |
| ocp_write_word(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0); |
| ocp_data &= ~PCUT_STATUS; |
| ocp_write_word(tp, MCU_TYPE_USB, USB_MISC_0, ocp_data); |
| } |
| |
| static void r8153b_power_cut_en(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data; |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_POWER_CUT); |
| if (enable) |
| ocp_data |= PWR_EN | PHASE2_EN; |
| else |
| ocp_data &= ~PWR_EN; |
| ocp_write_word(tp, MCU_TYPE_USB, USB_POWER_CUT, ocp_data); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_USB, USB_MISC_0); |
| ocp_data &= ~PCUT_STATUS; |
| ocp_write_word(tp, MCU_TYPE_USB, USB_MISC_0, ocp_data); |
| } |
| |
| static void r8153_queue_wake(struct r8152 *tp, bool enable) |
| { |
| u32 ocp_data; |
| |
| ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_INDICATE_FALG); |
| if (enable) |
| ocp_data |= UPCOMING_RUNTIME_D3; |
| else |
| ocp_data &= ~UPCOMING_RUNTIME_D3; |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_INDICATE_FALG, ocp_data); |
| |
| ocp_data = ocp_read_byte(tp, MCU_TYPE_PLA, PLA_SUSPEND_FLAG); |
| ocp_data &= ~LINK_CHG_EVENT; |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_SUSPEND_FLAG, ocp_data); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS); |
| ocp_data &= ~LINK_CHANGE_FLAG; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_EXTRA_STATUS, ocp_data); |
| } |
| |
| static bool rtl_can_wakeup(struct r8152 *tp) |
| { |
| struct usb_device *udev = tp->udev; |
| |
| return (udev->actconfig->desc.bmAttributes & USB_CONFIG_ATT_WAKEUP); |
| } |
| |
| static void rtl_runtime_suspend_enable(struct r8152 *tp, bool enable) |
| { |
| if (enable) { |
| u32 ocp_data; |
| |
| __rtl_set_wol(tp, WAKE_ANY); |
| |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34); |
| ocp_data |= LINK_OFF_WAKE_EN; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG34, ocp_data); |
| |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML); |
| } else { |
| u32 ocp_data; |
| |
| __rtl_set_wol(tp, tp->saved_wolopts); |
| |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_CONFIG); |
| |
| ocp_data = ocp_read_word(tp, MCU_TYPE_PLA, PLA_CONFIG34); |
| ocp_data &= ~LINK_OFF_WAKE_EN; |
| ocp_write_word(tp, MCU_TYPE_PLA, PLA_CONFIG34, ocp_data); |
| |
| ocp_write_byte(tp, MCU_TYPE_PLA, PLA_CRWECR, CRWECR_NORAML); |
| } |
| } |
| |
| static void rtl8153_runtime_enable(struct r8152 *tp, bool enable) |
| { |
| if (enable) { |
| r8153_u1u2en(tp, false); |
| r8153_u2p3en(tp, false); |
| r8153_mac_clk_spd(tp, true); |
| rtl_runtime_suspend_enable(tp, true); |
| } else { |
| rtl_runtime_suspend_enable(tp, false); |
| r8153_mac_clk_spd(tp, false); |
| |
| switch (tp->version) { |
| case RTL_VER_03: |
| case RTL_VER_04: |
| break; |
| case RTL_VER_05: |
| case RTL_VER_06: |
| default: |
| r8153_u2p3en(tp, true); |
| break; |
| } |
| |
| r8153_u1u2en(tp, true); |
| } |
| } |
| |
| static void rtl8153b_runtime_enable(struct r8152 *tp, bool enable) |
| { |
| if (enable) { |
| r8153_queue_wake(tp, true); |
| r8153b_u1u2en(tp, false); |
| r8153_u2p3en(tp, false); |
| rtl_runtime_suspend_enable(tp, true); |
| r8153b_ups_en(tp, true); |
| } else { |
| r8153b_ups_en(tp, false); |
|