ethernet/aeroflex/greth.h

0001 /* SPDX-License-Identifier: GPL-2.0 */
0002 #ifndef GRETH_H
0003 #define GRETH_H
0004
0005 #include <linux/phy.h>
0006
0007 /* Register bits and masks */
0008 #define GRETH_RESET 0x40
0009 #define GRETH_MII_BUSY 0x8
0010 #define GRETH_MII_NVALID 0x10
0011
0012 #define GRETH_CTRL_FD         0x10
0013 #define GRETH_CTRL_PR         0x20
0014 #define GRETH_CTRL_SP         0x80
0015 #define GRETH_CTRL_GB         0x100
0016 #define GRETH_CTRL_PSTATIEN   0x400
0017 #define GRETH_CTRL_MCEN       0x800
0018 #define GRETH_CTRL_DISDUPLEX  0x1000
0019 #define GRETH_STATUS_PHYSTAT  0x100
0020
0021 #define GRETH_BD_EN 0x800
0022 #define GRETH_BD_WR 0x1000
0023 #define GRETH_BD_IE 0x2000
0024 #define GRETH_BD_LEN 0x7FF
0025
0026 #define GRETH_TXEN 0x1
0027 #define GRETH_INT_TE 0x2
0028 #define GRETH_INT_TX 0x8
0029 #define GRETH_TXI 0x4
0030 #define GRETH_TXBD_STATUS 0x0001C000
0031 #define GRETH_TXBD_MORE 0x20000
0032 #define GRETH_TXBD_IPCS 0x40000
0033 #define GRETH_TXBD_TCPCS 0x80000
0034 #define GRETH_TXBD_UDPCS 0x100000
0035 #define GRETH_TXBD_CSALL (GRETH_TXBD_IPCS | GRETH_TXBD_TCPCS | GRETH_TXBD_UDPCS)
0036 #define GRETH_TXBD_ERR_LC 0x10000
0037 #define GRETH_TXBD_ERR_UE 0x4000
0038 #define GRETH_TXBD_ERR_AL 0x8000
0039
0040 #define GRETH_INT_RE         0x1
0041 #define GRETH_INT_RX         0x4
0042 #define GRETH_RXEN           0x2
0043 #define GRETH_RXI            0x8
0044 #define GRETH_RXBD_STATUS    0xFFFFC000
0045 #define GRETH_RXBD_ERR_AE    0x4000
0046 #define GRETH_RXBD_ERR_FT    0x8000
0047 #define GRETH_RXBD_ERR_CRC   0x10000
0048 #define GRETH_RXBD_ERR_OE    0x20000
0049 #define GRETH_RXBD_ERR_LE    0x40000
0050 #define GRETH_RXBD_IP        0x80000
0051 #define GRETH_RXBD_IP_CSERR  0x100000
0052 #define GRETH_RXBD_UDP       0x200000
0053 #define GRETH_RXBD_UDP_CSERR 0x400000
0054 #define GRETH_RXBD_TCP       0x800000
0055 #define GRETH_RXBD_TCP_CSERR 0x1000000
0056 #define GRETH_RXBD_IP_FRAG   0x2000000
0057 #define GRETH_RXBD_MCAST     0x4000000
0058
0059 /* Descriptor parameters */
0060 #define GRETH_TXBD_NUM 128
0061 #define GRETH_TXBD_NUM_MASK (GRETH_TXBD_NUM-1)
0062 #define GRETH_TX_BUF_SIZE 2048
0063 #define GRETH_RXBD_NUM 128
0064 #define GRETH_RXBD_NUM_MASK (GRETH_RXBD_NUM-1)
0065 #define GRETH_RX_BUF_SIZE 2048
0066
0067 /* Buffers per page */
0068 #define GRETH_RX_BUF_PPGAE  (PAGE_SIZE/GRETH_RX_BUF_SIZE)
0069 #define GRETH_TX_BUF_PPGAE  (PAGE_SIZE/GRETH_TX_BUF_SIZE)
0070
0071 /* How many pages are needed for buffers */
0072 #define GRETH_RX_BUF_PAGE_NUM   (GRETH_RXBD_NUM/GRETH_RX_BUF_PPGAE)
0073 #define GRETH_TX_BUF_PAGE_NUM   (GRETH_TXBD_NUM/GRETH_TX_BUF_PPGAE)
0074
0075 /* Buffer size.
0076  * Gbit MAC uses tagged maximum frame size which is 1518 excluding CRC.
0077  * Set to 1520 to make all buffers word aligned for non-gbit MAC.
0078  */
0079 #define MAX_FRAME_SIZE      1520
0080
0081 /* GRETH APB registers */
0082 struct greth_regs {
0083     u32 control;
0084     u32 status;
0085     u32 esa_msb;
0086     u32 esa_lsb;
0087     u32 mdio;
0088     u32 tx_desc_p;
0089     u32 rx_desc_p;
0090     u32 edclip;
0091     u32 hash_msb;
0092     u32 hash_lsb;
0093 };
0094
0095 /* GRETH buffer descriptor */
0096 struct greth_bd {
0097     u32 stat;
0098     u32 addr;
0099 };
0100
0101 struct greth_private {
0102     struct sk_buff *rx_skbuff[GRETH_RXBD_NUM];
0103     struct sk_buff *tx_skbuff[GRETH_TXBD_NUM];
0104
0105     unsigned char *tx_bufs[GRETH_TXBD_NUM];
0106     unsigned char *rx_bufs[GRETH_RXBD_NUM];
0107     u16 tx_bufs_length[GRETH_TXBD_NUM];
0108
0109     u16 tx_next;
0110     u16 tx_last;
0111     u16 tx_free; /* only used on 10/100Mbit */
0112     u16 rx_cur;
0113
0114     struct greth_regs *regs;    /* Address of controller registers. */
0115     struct greth_bd *rx_bd_base;    /* Address of Rx BDs. */
0116     struct greth_bd *tx_bd_base;    /* Address of Tx BDs. */
0117     dma_addr_t rx_bd_base_phys;
0118     dma_addr_t tx_bd_base_phys;
0119
0120     int irq;
0121
0122     struct device *dev;         /* Pointer to platform_device->dev */
0123     struct net_device *netdev;
0124     struct napi_struct napi;
0125     spinlock_t devlock;
0126
0127     struct mii_bus *mdio;
0128     unsigned int link;
0129     unsigned int speed;
0130     unsigned int duplex;
0131
0132     u32 msg_enable;
0133
0134     u8 phyaddr;
0135     u8 multicast;
0136     u8 gbit_mac;
0137     u8 mdio_int_en;
0138     u8 edcl;
0139 };
0140
0141 #endif