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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef GRETH_H
#define GRETH_H
#include <linux/phy.h>
/* Register bits and masks */
#define GRETH_RESET 0x40
#define GRETH_MII_BUSY 0x8
#define GRETH_MII_NVALID 0x10
#define GRETH_CTRL_FD 0x10
#define GRETH_CTRL_PR 0x20
#define GRETH_CTRL_SP 0x80
#define GRETH_CTRL_GB 0x100
#define GRETH_CTRL_PSTATIEN 0x400
#define GRETH_CTRL_MCEN 0x800
#define GRETH_CTRL_DISDUPLEX 0x1000
#define GRETH_STATUS_PHYSTAT 0x100
#define GRETH_BD_EN 0x800
#define GRETH_BD_WR 0x1000
#define GRETH_BD_IE 0x2000
#define GRETH_BD_LEN 0x7FF
#define GRETH_TXEN 0x1
#define GRETH_INT_TE 0x2
#define GRETH_INT_TX 0x8
#define GRETH_TXI 0x4
#define GRETH_TXBD_STATUS 0x0001C000
#define GRETH_TXBD_MORE 0x20000
#define GRETH_TXBD_IPCS 0x40000
#define GRETH_TXBD_TCPCS 0x80000
#define GRETH_TXBD_UDPCS 0x100000
#define GRETH_TXBD_CSALL (GRETH_TXBD_IPCS | GRETH_TXBD_TCPCS | GRETH_TXBD_UDPCS)
#define GRETH_TXBD_ERR_LC 0x10000
#define GRETH_TXBD_ERR_UE 0x4000
#define GRETH_TXBD_ERR_AL 0x8000
#define GRETH_INT_RE 0x1
#define GRETH_INT_RX 0x4
#define GRETH_RXEN 0x2
#define GRETH_RXI 0x8
#define GRETH_RXBD_STATUS 0xFFFFC000
#define GRETH_RXBD_ERR_AE 0x4000
#define GRETH_RXBD_ERR_FT 0x8000
#define GRETH_RXBD_ERR_CRC 0x10000
#define GRETH_RXBD_ERR_OE 0x20000
#define GRETH_RXBD_ERR_LE 0x40000
#define GRETH_RXBD_IP 0x80000
#define GRETH_RXBD_IP_CSERR 0x100000
#define GRETH_RXBD_UDP 0x200000
#define GRETH_RXBD_UDP_CSERR 0x400000
#define GRETH_RXBD_TCP 0x800000
#define GRETH_RXBD_TCP_CSERR 0x1000000
#define GRETH_RXBD_IP_FRAG 0x2000000
#define GRETH_RXBD_MCAST 0x4000000
/* Descriptor parameters */
#define GRETH_TXBD_NUM 128
#define GRETH_TXBD_NUM_MASK (GRETH_TXBD_NUM-1)
#define GRETH_TX_BUF_SIZE 2048
#define GRETH_RXBD_NUM 128
#define GRETH_RXBD_NUM_MASK (GRETH_RXBD_NUM-1)
#define GRETH_RX_BUF_SIZE 2048
/* Buffers per page */
#define GRETH_RX_BUF_PPGAE (PAGE_SIZE/GRETH_RX_BUF_SIZE)
#define GRETH_TX_BUF_PPGAE (PAGE_SIZE/GRETH_TX_BUF_SIZE)
/* How many pages are needed for buffers */
#define GRETH_RX_BUF_PAGE_NUM (GRETH_RXBD_NUM/GRETH_RX_BUF_PPGAE)
#define GRETH_TX_BUF_PAGE_NUM (GRETH_TXBD_NUM/GRETH_TX_BUF_PPGAE)
/* Buffer size.
* Gbit MAC uses tagged maximum frame size which is 1518 excluding CRC.
* Set to 1520 to make all buffers word aligned for non-gbit MAC.
*/
#define MAX_FRAME_SIZE 1520
/* GRETH APB registers */
struct greth_regs {
u32 control;
u32 status;
u32 esa_msb;
u32 esa_lsb;
u32 mdio;
u32 tx_desc_p;
u32 rx_desc_p;
u32 edclip;
u32 hash_msb;
u32 hash_lsb;
};
/* GRETH buffer descriptor */
struct greth_bd {
u32 stat;
u32 addr;
};
struct greth_private {
struct sk_buff *rx_skbuff[GRETH_RXBD_NUM];
struct sk_buff *tx_skbuff[GRETH_TXBD_NUM];
unsigned char *tx_bufs[GRETH_TXBD_NUM];
unsigned char *rx_bufs[GRETH_RXBD_NUM];
u16 tx_bufs_length[GRETH_TXBD_NUM];
u16 tx_next;
u16 tx_last;
u16 tx_free; /* only used on 10/100Mbit */
u16 rx_cur;
struct greth_regs *regs; /* Address of controller registers. */
struct greth_bd *rx_bd_base; /* Address of Rx BDs. */
struct greth_bd *tx_bd_base; /* Address of Tx BDs. */
dma_addr_t rx_bd_base_phys;
dma_addr_t tx_bd_base_phys;
int irq;
struct device *dev; /* Pointer to platform_device->dev */
struct net_device *netdev;
struct napi_struct napi;
spinlock_t devlock;
struct mii_bus *mdio;
unsigned int link;
unsigned int speed;
unsigned int duplex;
u32 msg_enable;
u8 phyaddr;
u8 multicast;
u8 gbit_mac;
u8 mdio_int_en;
u8 edcl;
};
#endif
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