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linux_dsm_epyc7002/drivers/net/pch_gbe/pch_gbe.h
Toshiharu Okada 98200ec28a pch_gbe: Fix the MAC Address load issue. 
With the specification of hardware,
the processing at the time of driver starting was modified.

This device write automatically the MAC address read from serial ROM
into a MAC Adress1A/1B register at the time of power on reset.
However, when stable clock is not supplied,
the writing of MAC Adress1A/1B register may not be completed.
In this case, it is necessary to load MAC address to MAC Address1A/1B register
by the MAC Address1 load register.

This patch always does the above processing,
in order not to be dependent on system environment.

Signed-off-by: Toshiharu Okada <toshiharu-linux@dsn.okisemi.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2011-02-14 13:37:26 -08:00

660 lines
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/*
* Copyright (C) 1999 - 2010 Intel Corporation.
* Copyright (C) 2010 OKI SEMICONDUCTOR Co., LTD.
*
* This code was derived from the Intel e1000e Linux driver.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; version 2 of the License.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef _PCH_GBE_H_
#define _PCH_GBE_H_
#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/mii.h>
#include <linux/delay.h>
#include <linux/pci.h>
#include <linux/netdevice.h>
#include <linux/etherdevice.h>
#include <linux/ethtool.h>
#include <linux/vmalloc.h>
#include <net/ip.h>
#include <net/tcp.h>
#include <net/udp.h>
/**
* pch_gbe_regs_mac_adr - Structure holding values of mac address registers
* @high Denotes the 1st to 4th byte from the initial of MAC address
* @low Denotes the 5th to 6th byte from the initial of MAC address
*/
struct pch_gbe_regs_mac_adr {
u32 high;
u32 low;
};
/**
* pch_udc_regs - Structure holding values of MAC registers
*/
struct pch_gbe_regs {
u32 INT_ST;
u32 INT_EN;
u32 MODE;
u32 RESET;
u32 TCPIP_ACC;
u32 EX_LIST;
u32 INT_ST_HOLD;
u32 PHY_INT_CTRL;
u32 MAC_RX_EN;
u32 RX_FCTRL;
u32 PAUSE_REQ;
u32 RX_MODE;
u32 TX_MODE;
u32 RX_FIFO_ST;
u32 TX_FIFO_ST;
u32 TX_FID;
u32 TX_RESULT;
u32 PAUSE_PKT1;
u32 PAUSE_PKT2;
u32 PAUSE_PKT3;
u32 PAUSE_PKT4;
u32 PAUSE_PKT5;
u32 reserve[2];
struct pch_gbe_regs_mac_adr mac_adr[16];
u32 ADDR_MASK;
u32 MIIM;
u32 MAC_ADDR_LOAD;
u32 RGMII_ST;
u32 RGMII_CTRL;
u32 reserve3[3];
u32 DMA_CTRL;
u32 reserve4[3];
u32 RX_DSC_BASE;
u32 RX_DSC_SIZE;
u32 RX_DSC_HW_P;
u32 RX_DSC_HW_P_HLD;
u32 RX_DSC_SW_P;
u32 reserve5[3];
u32 TX_DSC_BASE;
u32 TX_DSC_SIZE;
u32 TX_DSC_HW_P;
u32 TX_DSC_HW_P_HLD;
u32 TX_DSC_SW_P;
u32 reserve6[3];
u32 RX_DMA_ST;
u32 TX_DMA_ST;
u32 reserve7[2];
u32 WOL_ST;
u32 WOL_CTRL;
u32 WOL_ADDR_MASK;
};
/* Interrupt Status */
/* Interrupt Status Hold */
/* Interrupt Enable */
#define PCH_GBE_INT_RX_DMA_CMPLT 0x00000001 /* Receive DMA Transfer Complete */
#define PCH_GBE_INT_RX_VALID 0x00000002 /* MAC Normal Receive Complete */
#define PCH_GBE_INT_RX_FRAME_ERR 0x00000004 /* Receive frame error */
#define PCH_GBE_INT_RX_FIFO_ERR 0x00000008 /* Receive FIFO Overflow */
#define PCH_GBE_INT_RX_DMA_ERR 0x00000010 /* Receive DMA Transfer Error */
#define PCH_GBE_INT_RX_DSC_EMP 0x00000020 /* Receive Descriptor Empty */
#define PCH_GBE_INT_TX_CMPLT 0x00000100 /* MAC Transmission Complete */
#define PCH_GBE_INT_TX_DMA_CMPLT 0x00000200 /* DMA Transfer Complete */
#define PCH_GBE_INT_TX_FIFO_ERR 0x00000400 /* Transmission FIFO underflow. */
#define PCH_GBE_INT_TX_DMA_ERR 0x00000800 /* Transmission DMA Error */
#define PCH_GBE_INT_PAUSE_CMPLT 0x00001000 /* Pause Transmission complete */
#define PCH_GBE_INT_MIIM_CMPLT 0x00010000 /* MIIM I/F Read completion */
#define PCH_GBE_INT_PHY_INT 0x00100000 /* Interruption from PHY */
#define PCH_GBE_INT_WOL_DET 0x01000000 /* Wake On LAN Event detection. */
#define PCH_GBE_INT_TCPIP_ERR 0x10000000 /* TCP/IP Accelerator Error */
/* Mode */
#define PCH_GBE_MODE_MII_ETHER 0x00000000 /* GIGA Ethernet Mode [MII] */
#define PCH_GBE_MODE_GMII_ETHER 0x80000000 /* GIGA Ethernet Mode [GMII] */
#define PCH_GBE_MODE_HALF_DUPLEX 0x00000000 /* Duplex Mode [half duplex] */
#define PCH_GBE_MODE_FULL_DUPLEX 0x40000000 /* Duplex Mode [full duplex] */
#define PCH_GBE_MODE_FR_BST 0x04000000 /* Frame bursting is done */
/* Reset */
#define PCH_GBE_ALL_RST 0x80000000 /* All reset */
#define PCH_GBE_TX_RST 0x40000000 /* TX MAC, TX FIFO, TX DMA reset */
#define PCH_GBE_RX_RST 0x04000000 /* RX MAC, RX FIFO, RX DMA reset */
/* TCP/IP Accelerator Control */
#define PCH_GBE_EX_LIST_EN 0x00000008 /* External List Enable */
#define PCH_GBE_RX_TCPIPACC_OFF 0x00000004 /* RX TCP/IP ACC Disabled */
#define PCH_GBE_TX_TCPIPACC_EN 0x00000002 /* TX TCP/IP ACC Enable */
#define PCH_GBE_RX_TCPIPACC_EN 0x00000001 /* RX TCP/IP ACC Enable */
/* MAC RX Enable */
#define PCH_GBE_MRE_MAC_RX_EN 0x00000001 /* MAC Receive Enable */
/* RX Flow Control */
#define PCH_GBE_FL_CTRL_EN 0x80000000 /* Pause packet is enabled */
/* Pause Packet Request */
#define PCH_GBE_PS_PKT_RQ 0x80000000 /* Pause packet Request */
/* RX Mode */
#define PCH_GBE_ADD_FIL_EN 0x80000000 /* Address Filtering Enable */
/* Multicast Filtering Enable */
#define PCH_GBE_MLT_FIL_EN 0x40000000
/* Receive Almost Empty Threshold */
#define PCH_GBE_RH_ALM_EMP_4 0x00000000 /* 4 words */
#define PCH_GBE_RH_ALM_EMP_8 0x00004000 /* 8 words */
#define PCH_GBE_RH_ALM_EMP_16 0x00008000 /* 16 words */
#define PCH_GBE_RH_ALM_EMP_32 0x0000C000 /* 32 words */
/* Receive Almost Full Threshold */
#define PCH_GBE_RH_ALM_FULL_4 0x00000000 /* 4 words */
#define PCH_GBE_RH_ALM_FULL_8 0x00001000 /* 8 words */
#define PCH_GBE_RH_ALM_FULL_16 0x00002000 /* 16 words */
#define PCH_GBE_RH_ALM_FULL_32 0x00003000 /* 32 words */
/* RX FIFO Read Triger Threshold */
#define PCH_GBE_RH_RD_TRG_4 0x00000000 /* 4 words */
#define PCH_GBE_RH_RD_TRG_8 0x00000200 /* 8 words */
#define PCH_GBE_RH_RD_TRG_16 0x00000400 /* 16 words */
#define PCH_GBE_RH_RD_TRG_32 0x00000600 /* 32 words */
#define PCH_GBE_RH_RD_TRG_64 0x00000800 /* 64 words */
#define PCH_GBE_RH_RD_TRG_128 0x00000A00 /* 128 words */
#define PCH_GBE_RH_RD_TRG_256 0x00000C00 /* 256 words */
#define PCH_GBE_RH_RD_TRG_512 0x00000E00 /* 512 words */
/* Receive Descriptor bit definitions */
#define PCH_GBE_RXD_ACC_STAT_BCAST 0x00000400
#define PCH_GBE_RXD_ACC_STAT_MCAST 0x00000200
#define PCH_GBE_RXD_ACC_STAT_UCAST 0x00000100
#define PCH_GBE_RXD_ACC_STAT_TCPIPOK 0x000000C0
#define PCH_GBE_RXD_ACC_STAT_IPOK 0x00000080
#define PCH_GBE_RXD_ACC_STAT_TCPOK 0x00000040
#define PCH_GBE_RXD_ACC_STAT_IP6ERR 0x00000020
#define PCH_GBE_RXD_ACC_STAT_OFLIST 0x00000010
#define PCH_GBE_RXD_ACC_STAT_TYPEIP 0x00000008
#define PCH_GBE_RXD_ACC_STAT_MACL 0x00000004
#define PCH_GBE_RXD_ACC_STAT_PPPOE 0x00000002
#define PCH_GBE_RXD_ACC_STAT_VTAGT 0x00000001
#define PCH_GBE_RXD_GMAC_STAT_PAUSE 0x0200
#define PCH_GBE_RXD_GMAC_STAT_MARBR 0x0100
#define PCH_GBE_RXD_GMAC_STAT_MARMLT 0x0080
#define PCH_GBE_RXD_GMAC_STAT_MARIND 0x0040
#define PCH_GBE_RXD_GMAC_STAT_MARNOTMT 0x0020
#define PCH_GBE_RXD_GMAC_STAT_TLONG 0x0010
#define PCH_GBE_RXD_GMAC_STAT_TSHRT 0x0008
#define PCH_GBE_RXD_GMAC_STAT_NOTOCTAL 0x0004
#define PCH_GBE_RXD_GMAC_STAT_NBLERR 0x0002
#define PCH_GBE_RXD_GMAC_STAT_CRCERR 0x0001
/* Transmit Descriptor bit definitions */
#define PCH_GBE_TXD_CTRL_TCPIP_ACC_OFF 0x0008
#define PCH_GBE_TXD_CTRL_ITAG 0x0004
#define PCH_GBE_TXD_CTRL_ICRC 0x0002
#define PCH_GBE_TXD_CTRL_APAD 0x0001
#define PCH_GBE_TXD_WORDS_SHIFT 2
#define PCH_GBE_TXD_GMAC_STAT_CMPLT 0x2000
#define PCH_GBE_TXD_GMAC_STAT_ABT 0x1000
#define PCH_GBE_TXD_GMAC_STAT_EXCOL 0x0800
#define PCH_GBE_TXD_GMAC_STAT_SNGCOL 0x0400
#define PCH_GBE_TXD_GMAC_STAT_MLTCOL 0x0200
#define PCH_GBE_TXD_GMAC_STAT_CRSER 0x0100
#define PCH_GBE_TXD_GMAC_STAT_TLNG 0x0080
#define PCH_GBE_TXD_GMAC_STAT_TSHRT 0x0040
#define PCH_GBE_TXD_GMAC_STAT_LTCOL 0x0020
#define PCH_GBE_TXD_GMAC_STAT_TFUNDFLW 0x0010
#define PCH_GBE_TXD_GMAC_STAT_RTYCNT_MASK 0x000F
/* TX Mode */
#define PCH_GBE_TM_NO_RTRY 0x80000000 /* No Retransmission */
#define PCH_GBE_TM_LONG_PKT 0x40000000 /* Long Packt TX Enable */
#define PCH_GBE_TM_ST_AND_FD 0x20000000 /* Stare and Forward */
#define PCH_GBE_TM_SHORT_PKT 0x10000000 /* Short Packet TX Enable */
#define PCH_GBE_TM_LTCOL_RETX 0x08000000 /* Retransmission at Late Collision */
/* Frame Start Threshold */
#define PCH_GBE_TM_TH_TX_STRT_4 0x00000000 /* 4 words */
#define PCH_GBE_TM_TH_TX_STRT_8 0x00004000 /* 8 words */
#define PCH_GBE_TM_TH_TX_STRT_16 0x00008000 /* 16 words */
#define PCH_GBE_TM_TH_TX_STRT_32 0x0000C000 /* 32 words */
/* Transmit Almost Empty Threshold */
#define PCH_GBE_TM_TH_ALM_EMP_4 0x00000000 /* 4 words */
#define PCH_GBE_TM_TH_ALM_EMP_8 0x00000800 /* 8 words */
#define PCH_GBE_TM_TH_ALM_EMP_16 0x00001000 /* 16 words */
#define PCH_GBE_TM_TH_ALM_EMP_32 0x00001800 /* 32 words */
#define PCH_GBE_TM_TH_ALM_EMP_64 0x00002000 /* 64 words */
#define PCH_GBE_TM_TH_ALM_EMP_128 0x00002800 /* 128 words */
#define PCH_GBE_TM_TH_ALM_EMP_256 0x00003000 /* 256 words */
#define PCH_GBE_TM_TH_ALM_EMP_512 0x00003800 /* 512 words */
/* Transmit Almost Full Threshold */
#define PCH_GBE_TM_TH_ALM_FULL_4 0x00000000 /* 4 words */
#define PCH_GBE_TM_TH_ALM_FULL_8 0x00000200 /* 8 words */
#define PCH_GBE_TM_TH_ALM_FULL_16 0x00000400 /* 16 words */
#define PCH_GBE_TM_TH_ALM_FULL_32 0x00000600 /* 32 words */
/* RX FIFO Status */
#define PCH_GBE_RF_ALM_FULL 0x80000000 /* RX FIFO is almost full. */
#define PCH_GBE_RF_ALM_EMP 0x40000000 /* RX FIFO is almost empty. */
#define PCH_GBE_RF_RD_TRG 0x20000000 /* Become more than RH_RD_TRG. */
#define PCH_GBE_RF_STRWD 0x1FFE0000 /* The word count of RX FIFO. */
#define PCH_GBE_RF_RCVING 0x00010000 /* Stored in RX FIFO. */
/* MAC Address Mask */
#define PCH_GBE_BUSY 0x80000000
/* MIIM */
#define PCH_GBE_MIIM_OPER_WRITE 0x04000000
#define PCH_GBE_MIIM_OPER_READ 0x00000000
#define PCH_GBE_MIIM_OPER_READY 0x04000000
#define PCH_GBE_MIIM_PHY_ADDR_SHIFT 21
#define PCH_GBE_MIIM_REG_ADDR_SHIFT 16
/* RGMII Status */
#define PCH_GBE_LINK_UP 0x80000008
#define PCH_GBE_RXC_SPEED_MSK 0x00000006
#define PCH_GBE_RXC_SPEED_2_5M 0x00000000 /* 2.5MHz */
#define PCH_GBE_RXC_SPEED_25M 0x00000002 /* 25MHz */
#define PCH_GBE_RXC_SPEED_125M 0x00000004 /* 100MHz */
#define PCH_GBE_DUPLEX_FULL 0x00000001
/* RGMII Control */
#define PCH_GBE_CRS_SEL 0x00000010
#define PCH_GBE_RGMII_RATE_125M 0x00000000
#define PCH_GBE_RGMII_RATE_25M 0x00000008
#define PCH_GBE_RGMII_RATE_2_5M 0x0000000C
#define PCH_GBE_RGMII_MODE_GMII 0x00000000
#define PCH_GBE_RGMII_MODE_RGMII 0x00000002
#define PCH_GBE_CHIP_TYPE_EXTERNAL 0x00000000
#define PCH_GBE_CHIP_TYPE_INTERNAL 0x00000001
/* DMA Control */
#define PCH_GBE_RX_DMA_EN 0x00000002 /* Enables Receive DMA */
#define PCH_GBE_TX_DMA_EN 0x00000001 /* Enables Transmission DMA */
/* Wake On LAN Status */
#define PCH_GBE_WLS_BR 0x00000008 /* Broadcas Address */
#define PCH_GBE_WLS_MLT 0x00000004 /* Multicast Address */
/* The Frame registered in Address Recognizer */
#define PCH_GBE_WLS_IND 0x00000002
#define PCH_GBE_WLS_MP 0x00000001 /* Magic packet Address */
/* Wake On LAN Control */
#define PCH_GBE_WLC_WOL_MODE 0x00010000
#define PCH_GBE_WLC_IGN_TLONG 0x00000100
#define PCH_GBE_WLC_IGN_TSHRT 0x00000080
#define PCH_GBE_WLC_IGN_OCTER 0x00000040
#define PCH_GBE_WLC_IGN_NBLER 0x00000020
#define PCH_GBE_WLC_IGN_CRCER 0x00000010
#define PCH_GBE_WLC_BR 0x00000008
#define PCH_GBE_WLC_MLT 0x00000004
#define PCH_GBE_WLC_IND 0x00000002
#define PCH_GBE_WLC_MP 0x00000001
/* Wake On LAN Address Mask */
#define PCH_GBE_WLA_BUSY 0x80000000
/* TX/RX descriptor defines */
#define PCH_GBE_MAX_TXD 4096
#define PCH_GBE_DEFAULT_TXD 256
#define PCH_GBE_MIN_TXD 8
#define PCH_GBE_MAX_RXD 4096
#define PCH_GBE_DEFAULT_RXD 256
#define PCH_GBE_MIN_RXD 8
/* Number of Transmit and Receive Descriptors must be a multiple of 8 */
#define PCH_GBE_TX_DESC_MULTIPLE 8
#define PCH_GBE_RX_DESC_MULTIPLE 8
/* Read/Write operation is done through MII Management IF */
#define PCH_GBE_HAL_MIIM_READ ((u32)0x00000000)
#define PCH_GBE_HAL_MIIM_WRITE ((u32)0x04000000)
/* flow control values */
#define PCH_GBE_FC_NONE 0
#define PCH_GBE_FC_RX_PAUSE 1
#define PCH_GBE_FC_TX_PAUSE 2
#define PCH_GBE_FC_FULL 3
#define PCH_GBE_FC_DEFAULT PCH_GBE_FC_FULL
struct pch_gbe_hw;
/**
* struct pch_gbe_functions - HAL APi function pointer
* @get_bus_info: for pch_gbe_hal_get_bus_info
* @init_hw: for pch_gbe_hal_init_hw
* @read_phy_reg: for pch_gbe_hal_read_phy_reg
* @write_phy_reg: for pch_gbe_hal_write_phy_reg
* @reset_phy: for pch_gbe_hal_phy_hw_reset
* @sw_reset_phy: for pch_gbe_hal_phy_sw_reset
* @power_up_phy: for pch_gbe_hal_power_up_phy
* @power_down_phy: for pch_gbe_hal_power_down_phy
* @read_mac_addr: for pch_gbe_hal_read_mac_addr
*/
struct pch_gbe_functions {
void (*get_bus_info) (struct pch_gbe_hw *);
s32 (*init_hw) (struct pch_gbe_hw *);
s32 (*read_phy_reg) (struct pch_gbe_hw *, u32, u16 *);
s32 (*write_phy_reg) (struct pch_gbe_hw *, u32, u16);
void (*reset_phy) (struct pch_gbe_hw *);
void (*sw_reset_phy) (struct pch_gbe_hw *);
void (*power_up_phy) (struct pch_gbe_hw *hw);
void (*power_down_phy) (struct pch_gbe_hw *hw);
s32 (*read_mac_addr) (struct pch_gbe_hw *);
};
/**
* struct pch_gbe_mac_info - MAC infomation
* @addr[6]: Store the MAC address
* @fc: Mode of flow control
* @fc_autoneg: Auto negotiation enable for flow control setting
* @tx_fc_enable: Enable flag of Transmit flow control
* @max_frame_size: Max transmit frame size
* @min_frame_size: Min transmit frame size
* @autoneg: Auto negotiation enable
* @link_speed: Link speed
* @link_duplex: Link duplex
*/
struct pch_gbe_mac_info {
u8 addr[6];
u8 fc;
u8 fc_autoneg;
u8 tx_fc_enable;
u32 max_frame_size;
u32 min_frame_size;
u8 autoneg;
u16 link_speed;
u16 link_duplex;
};
/**
* struct pch_gbe_phy_info - PHY infomation
* @addr: PHY address
* @id: PHY's identifier
* @revision: PHY's revision
* @reset_delay_us: HW reset delay time[us]
* @autoneg_advertised: Autoneg advertised
*/
struct pch_gbe_phy_info {
u32 addr;
u32 id;
u32 revision;
u32 reset_delay_us;
u16 autoneg_advertised;
};
/*!
* @ingroup Gigabit Ether driver Layer
* @struct pch_gbe_bus_info
* @brief Bus infomation
*/
struct pch_gbe_bus_info {
u8 type;
u8 speed;
u8 width;
};
/*!
* @ingroup Gigabit Ether driver Layer
* @struct pch_gbe_hw
* @brief Hardware infomation
*/
struct pch_gbe_hw {
void *back;
struct pch_gbe_regs __iomem *reg;
spinlock_t miim_lock;
const struct pch_gbe_functions *func;
struct pch_gbe_mac_info mac;
struct pch_gbe_phy_info phy;
struct pch_gbe_bus_info bus;
};
/**
* struct pch_gbe_rx_desc - Receive Descriptor
* @buffer_addr: RX Frame Buffer Address
* @tcp_ip_status: TCP/IP Accelerator Status
* @rx_words_eob: RX word count and Byte position
* @gbec_status: GMAC Status
* @dma_status: DMA Status
* @reserved1: Reserved
* @reserved2: Reserved
*/
struct pch_gbe_rx_desc {
u32 buffer_addr;
u32 tcp_ip_status;
u16 rx_words_eob;
u16 gbec_status;
u8 dma_status;
u8 reserved1;
u16 reserved2;
};
/**
* struct pch_gbe_tx_desc - Transmit Descriptor
* @buffer_addr: TX Frame Buffer Address
* @length: Data buffer length
* @reserved1: Reserved
* @tx_words_eob: TX word count and Byte position
* @tx_frame_ctrl: TX Frame Control
* @dma_status: DMA Status
* @reserved2: Reserved
* @gbec_status: GMAC Status
*/
struct pch_gbe_tx_desc {
u32 buffer_addr;
u16 length;
u16 reserved1;
u16 tx_words_eob;
u16 tx_frame_ctrl;
u8 dma_status;
u8 reserved2;
u16 gbec_status;
};
/**
* struct pch_gbe_buffer - Buffer infomation
* @skb: pointer to a socket buffer
* @dma: DMA address
* @time_stamp: time stamp
* @length: data size
*/
struct pch_gbe_buffer {
struct sk_buff *skb;
dma_addr_t dma;
unsigned long time_stamp;
u16 length;
bool mapped;
};
/**
* struct pch_gbe_tx_ring - tx ring infomation
* @tx_lock: spinlock structs
* @desc: pointer to the descriptor ring memory
* @dma: physical address of the descriptor ring
* @size: length of descriptor ring in bytes
* @count: number of descriptors in the ring
* @next_to_use: next descriptor to associate a buffer with
* @next_to_clean: next descriptor to check for DD status bit
* @buffer_info: array of buffer information structs
*/
struct pch_gbe_tx_ring {
spinlock_t tx_lock;
struct pch_gbe_tx_desc *desc;
dma_addr_t dma;
unsigned int size;
unsigned int count;
unsigned int next_to_use;
unsigned int next_to_clean;
struct pch_gbe_buffer *buffer_info;
};
/**
* struct pch_gbe_rx_ring - rx ring infomation
* @desc: pointer to the descriptor ring memory
* @dma: physical address of the descriptor ring
* @size: length of descriptor ring in bytes
* @count: number of descriptors in the ring
* @next_to_use: next descriptor to associate a buffer with
* @next_to_clean: next descriptor to check for DD status bit
* @buffer_info: array of buffer information structs
*/
struct pch_gbe_rx_ring {
struct pch_gbe_rx_desc *desc;
dma_addr_t dma;
unsigned int size;
unsigned int count;
unsigned int next_to_use;
unsigned int next_to_clean;
struct pch_gbe_buffer *buffer_info;
};
/**
* struct pch_gbe_hw_stats - Statistics counters collected by the MAC
* @rx_packets: total packets received
* @tx_packets: total packets transmitted
* @rx_bytes: total bytes received
* @tx_bytes: total bytes transmitted
* @rx_errors: bad packets received
* @tx_errors: packet transmit problems
* @rx_dropped: no space in Linux buffers
* @tx_dropped: no space available in Linux
* @multicast: multicast packets received
* @collisions: collisions
* @rx_crc_errors: received packet with crc error
* @rx_frame_errors: received frame alignment error
* @rx_alloc_buff_failed: allocate failure of a receive buffer
* @tx_length_errors: transmit length error
* @tx_aborted_errors: transmit aborted error
* @tx_carrier_errors: transmit carrier error
* @tx_timeout_count: Number of transmit timeout
* @tx_restart_count: Number of transmit restert
* @intr_rx_dsc_empty_count: Interrupt count of receive descriptor empty
* @intr_rx_frame_err_count: Interrupt count of receive frame error
* @intr_rx_fifo_err_count: Interrupt count of receive FIFO error
* @intr_rx_dma_err_count: Interrupt count of receive DMA error
* @intr_tx_fifo_err_count: Interrupt count of transmit FIFO error
* @intr_tx_dma_err_count: Interrupt count of transmit DMA error
* @intr_tcpip_err_count: Interrupt count of TCP/IP Accelerator
*/
struct pch_gbe_hw_stats {
u32 rx_packets;
u32 tx_packets;
u32 rx_bytes;
u32 tx_bytes;
u32 rx_errors;
u32 tx_errors;
u32 rx_dropped;
u32 tx_dropped;
u32 multicast;
u32 collisions;
u32 rx_crc_errors;
u32 rx_frame_errors;
u32 rx_alloc_buff_failed;
u32 tx_length_errors;
u32 tx_aborted_errors;
u32 tx_carrier_errors;
u32 tx_timeout_count;
u32 tx_restart_count;
u32 intr_rx_dsc_empty_count;
u32 intr_rx_frame_err_count;
u32 intr_rx_fifo_err_count;
u32 intr_rx_dma_err_count;
u32 intr_tx_fifo_err_count;
u32 intr_tx_dma_err_count;
u32 intr_tcpip_err_count;
};
/**
* struct pch_gbe_adapter - board specific private data structure
* @stats_lock: Spinlock structure for status
* @tx_queue_lock: Spinlock structure for transmit
* @ethtool_lock: Spinlock structure for ethtool
* @irq_sem: Semaphore for interrupt
* @netdev: Pointer of network device structure
* @pdev: Pointer of pci device structure
* @polling_netdev: Pointer of polling network device structure
* @napi: NAPI structure
* @hw: Pointer of hardware structure
* @stats: Hardware status
* @reset_task: Reset task
* @mii: MII information structure
* @watchdog_timer: Watchdog timer list
* @wake_up_evt: Wake up event
* @config_space: Configuration space
* @msg_enable: Driver message level
* @led_status: LED status
* @tx_ring: Pointer of Tx descriptor ring structure
* @rx_ring: Pointer of Rx descriptor ring structure
* @rx_buffer_len: Receive buffer length
* @tx_queue_len: Transmit queue length
* @rx_csum: Receive TCP/IP checksum enable/disable
* @tx_csum: Transmit TCP/IP checksum enable/disable
* @have_msi: PCI MSI mode flag
*/
struct pch_gbe_adapter {
spinlock_t stats_lock;
spinlock_t tx_queue_lock;
spinlock_t ethtool_lock;
atomic_t irq_sem;
struct net_device *netdev;
struct pci_dev *pdev;
struct net_device *polling_netdev;
struct napi_struct napi;
struct pch_gbe_hw hw;
struct pch_gbe_hw_stats stats;
struct work_struct reset_task;
struct mii_if_info mii;
struct timer_list watchdog_timer;
u32 wake_up_evt;
u32 *config_space;
unsigned long led_status;
struct pch_gbe_tx_ring *tx_ring;
struct pch_gbe_rx_ring *rx_ring;
unsigned long rx_buffer_len;
unsigned long tx_queue_len;
bool rx_csum;
bool tx_csum;
bool have_msi;
};
extern const char pch_driver_version[];
/* pch_gbe_main.c */
extern int pch_gbe_up(struct pch_gbe_adapter *adapter);
extern void pch_gbe_down(struct pch_gbe_adapter *adapter);
extern void pch_gbe_reinit_locked(struct pch_gbe_adapter *adapter);
extern void pch_gbe_reset(struct pch_gbe_adapter *adapter);
extern int pch_gbe_setup_tx_resources(struct pch_gbe_adapter *adapter,
struct pch_gbe_tx_ring *txdr);
extern int pch_gbe_setup_rx_resources(struct pch_gbe_adapter *adapter,
struct pch_gbe_rx_ring *rxdr);
extern void pch_gbe_free_tx_resources(struct pch_gbe_adapter *adapter,
struct pch_gbe_tx_ring *tx_ring);
extern void pch_gbe_free_rx_resources(struct pch_gbe_adapter *adapter,
struct pch_gbe_rx_ring *rx_ring);
extern void pch_gbe_update_stats(struct pch_gbe_adapter *adapter);
/* pch_gbe_param.c */
extern void pch_gbe_check_options(struct pch_gbe_adapter *adapter);
/* pch_gbe_ethtool.c */
extern void pch_gbe_set_ethtool_ops(struct net_device *netdev);
/* pch_gbe_mac.c */
extern s32 pch_gbe_mac_force_mac_fc(struct pch_gbe_hw *hw);
extern s32 pch_gbe_mac_read_mac_addr(struct pch_gbe_hw *hw);
extern u16 pch_gbe_mac_ctrl_miim(struct pch_gbe_hw *hw,
u32 addr, u32 dir, u32 reg, u16 data);
#endif /* _PCH_GBE_H_ */
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