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