u-boot/drivers/net/pch_gbe.h
Bin Meng 8ee443b8eb net: Add Intel Topcliff GMAC driver
Add a new driver for the Gigabit Ethernet MAC found on Intel Topcliff
Platform Controller Hub. Tested under 10/100 half/full duplex and 1000
full duplex modes using ping and tftpboot commands.

Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2015-03-24 21:22:37 -06:00

300 lines
8.6 KiB
C

/*
* Copyright (C) 2015, Bin Meng <bmeng.cn@gmail.com>
*
* Intel Platform Controller Hub EG20T (codename Topcliff) GMAC Driver
* Adapted from linux drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.h
*
* SPDX-License-Identifier: GPL-2.0+
*/
#ifndef _PCH_GBE_H_
#define _PCH_GBE_H_
#define PCH_GBE_TIMEOUT (3 * CONFIG_SYS_HZ)
#define PCH_GBE_DESC_NUM 4
#define PCH_GBE_ALIGN_SIZE 64
/*
* Topcliff GBE MAC supports receiving ethernet frames with normal frame size
* (64-1518 bytes) as well as up to 10318 bytes, however it does not have a
* register bit to turn off receiving 'jumbo frame', so we have to allocate
* our own buffer to store the received frames instead of using U-Boot's own.
*/
#define PCH_GBE_RX_FRAME_LEN ROUND(10318, PCH_GBE_ALIGN_SIZE)
/* Interrupt Status */
/* Interrupt Status Hold */
/* Interrupt Enable */
#define PCH_GBE_INT_RX_DMA_CMPLT 0x00000001
#define PCH_GBE_INT_RX_VALID 0x00000002
#define PCH_GBE_INT_RX_FRAME_ERR 0x00000004
#define PCH_GBE_INT_RX_FIFO_ERR 0x00000008
#define PCH_GBE_INT_RX_DMA_ERR 0x00000010
#define PCH_GBE_INT_RX_DSC_EMP 0x00000020
#define PCH_GBE_INT_TX_CMPLT 0x00000100
#define PCH_GBE_INT_TX_DMA_CMPLT 0x00000200
#define PCH_GBE_INT_TX_FIFO_ERR 0x00000400
#define PCH_GBE_INT_TX_DMA_ERR 0x00000800
#define PCH_GBE_INT_PAUSE_CMPLT 0x00001000
#define PCH_GBE_INT_MIIM_CMPLT 0x00010000
#define PCH_GBE_INT_PHY_INT 0x00100000
#define PCH_GBE_INT_WOL_DET 0x01000000
#define PCH_GBE_INT_TCPIP_ERR 0x10000000
/* Mode */
#define PCH_GBE_MODE_MII_ETHER 0x00000000
#define PCH_GBE_MODE_GMII_ETHER 0x80000000
#define PCH_GBE_MODE_HALF_DUPLEX 0x00000000
#define PCH_GBE_MODE_FULL_DUPLEX 0x40000000
#define PCH_GBE_MODE_FR_BST 0x04000000
/* Reset */
#define PCH_GBE_ALL_RST 0x80000000
#define PCH_GBE_TX_RST 0x00008000
#define PCH_GBE_RX_RST 0x00004000
/* TCP/IP Accelerator Control */
#define PCH_GBE_EX_LIST_EN 0x00000008
#define PCH_GBE_RX_TCPIPACC_OFF 0x00000004
#define PCH_GBE_TX_TCPIPACC_EN 0x00000002
#define PCH_GBE_RX_TCPIPACC_EN 0x00000001
/* MAC RX Enable */
#define PCH_GBE_MRE_MAC_RX_EN 0x00000001
/* RX Flow Control */
#define PCH_GBE_FL_CTRL_EN 0x80000000
/* RX Mode */
#define PCH_GBE_ADD_FIL_EN 0x80000000
#define PCH_GBE_MLT_FIL_EN 0x40000000
#define PCH_GBE_RH_ALM_EMP_4 0x00000000
#define PCH_GBE_RH_ALM_EMP_8 0x00004000
#define PCH_GBE_RH_ALM_EMP_16 0x00008000
#define PCH_GBE_RH_ALM_EMP_32 0x0000c000
#define PCH_GBE_RH_ALM_FULL_4 0x00000000
#define PCH_GBE_RH_ALM_FULL_8 0x00001000
#define PCH_GBE_RH_ALM_FULL_16 0x00002000
#define PCH_GBE_RH_ALM_FULL_32 0x00003000
#define PCH_GBE_RH_RD_TRG_4 0x00000000
#define PCH_GBE_RH_RD_TRG_8 0x00000200
#define PCH_GBE_RH_RD_TRG_16 0x00000400
#define PCH_GBE_RH_RD_TRG_32 0x00000600
#define PCH_GBE_RH_RD_TRG_64 0x00000800
#define PCH_GBE_RH_RD_TRG_128 0x00000a00
#define PCH_GBE_RH_RD_TRG_256 0x00000c00
#define PCH_GBE_RH_RD_TRG_512 0x00000e00
/* TX Mode */
#define PCH_GBE_TM_NO_RTRY 0x80000000
#define PCH_GBE_TM_LONG_PKT 0x40000000
#define PCH_GBE_TM_ST_AND_FD 0x20000000
#define PCH_GBE_TM_SHORT_PKT 0x10000000
#define PCH_GBE_TM_LTCOL_RETX 0x08000000
#define PCH_GBE_TM_TH_TX_STRT_4 0x00000000
#define PCH_GBE_TM_TH_TX_STRT_8 0x00004000
#define PCH_GBE_TM_TH_TX_STRT_16 0x00008000
#define PCH_GBE_TM_TH_TX_STRT_32 0x0000c000
#define PCH_GBE_TM_TH_ALM_EMP_4 0x00000000
#define PCH_GBE_TM_TH_ALM_EMP_8 0x00000800
#define PCH_GBE_TM_TH_ALM_EMP_16 0x00001000
#define PCH_GBE_TM_TH_ALM_EMP_32 0x00001800
#define PCH_GBE_TM_TH_ALM_EMP_64 0x00002000
#define PCH_GBE_TM_TH_ALM_EMP_128 0x00002800
#define PCH_GBE_TM_TH_ALM_EMP_256 0x00003000
#define PCH_GBE_TM_TH_ALM_EMP_512 0x00003800
#define PCH_GBE_TM_TH_ALM_FULL_4 0x00000000
#define PCH_GBE_TM_TH_ALM_FULL_8 0x00000200
#define PCH_GBE_TM_TH_ALM_FULL_16 0x00000400
#define PCH_GBE_TM_TH_ALM_FULL_32 0x00000600
/* 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 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
#define PCH_GBE_TX_DMA_EN 0x00000001
/* 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
/**
* 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;
};
/**
* 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_gbe_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;
};
struct pch_gbe_priv {
struct pch_gbe_rx_desc rx_desc[PCH_GBE_DESC_NUM];
struct pch_gbe_tx_desc tx_desc[PCH_GBE_DESC_NUM];
char rx_buff[PCH_GBE_DESC_NUM][PCH_GBE_RX_FRAME_LEN];
struct eth_device *dev;
struct phy_device *phydev;
struct mii_dev *bus;
struct pch_gbe_regs *mac_regs;
pci_dev_t bdf;
u32 interface;
int rx_idx;
int tx_idx;
};
#endif /* _PCH_GBE_H_ */