drivers/net/ethernet/aeroflex/greth.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef GRETH_H
   3 #define GRETH_H
   4
   5 #include <linux/phy.h>
   6
   7 /* Register bits and masks */
   8 #define GRETH_RESET 0x40
   9 #define GRETH_MII_BUSY 0x8
  10 #define GRETH_MII_NVALID 0x10
  11
  12 #define GRETH_CTRL_FD         0x10
  13 #define GRETH_CTRL_PR         0x20
  14 #define GRETH_CTRL_SP         0x80
  15 #define GRETH_CTRL_GB         0x100
  16 #define GRETH_CTRL_PSTATIEN   0x400
  17 #define GRETH_CTRL_MCEN       0x800
  18 #define GRETH_CTRL_DISDUPLEX  0x1000
  19 #define GRETH_STATUS_PHYSTAT  0x100
  20
  21 #define GRETH_BD_EN 0x800
  22 #define GRETH_BD_WR 0x1000
  23 #define GRETH_BD_IE 0x2000
  24 #define GRETH_BD_LEN 0x7FF
  25
  26 #define GRETH_TXEN 0x1
  27 #define GRETH_INT_TE 0x2
  28 #define GRETH_INT_TX 0x8
  29 #define GRETH_TXI 0x4
  30 #define GRETH_TXBD_STATUS 0x0001C000
  31 #define GRETH_TXBD_MORE 0x20000
  32 #define GRETH_TXBD_IPCS 0x40000
  33 #define GRETH_TXBD_TCPCS 0x80000
  34 #define GRETH_TXBD_UDPCS 0x100000
  35 #define GRETH_TXBD_CSALL (GRETH_TXBD_IPCS | GRETH_TXBD_TCPCS | GRETH_TXBD_UDPCS)
  36 #define GRETH_TXBD_ERR_LC 0x10000
  37 #define GRETH_TXBD_ERR_UE 0x4000
  38 #define GRETH_TXBD_ERR_AL 0x8000
  39
  40 #define GRETH_INT_RE         0x1
  41 #define GRETH_INT_RX         0x4
  42 #define GRETH_RXEN           0x2
  43 #define GRETH_RXI            0x8
  44 #define GRETH_RXBD_STATUS    0xFFFFC000
  45 #define GRETH_RXBD_ERR_AE    0x4000
  46 #define GRETH_RXBD_ERR_FT    0x8000
  47 #define GRETH_RXBD_ERR_CRC   0x10000
  48 #define GRETH_RXBD_ERR_OE    0x20000
  49 #define GRETH_RXBD_ERR_LE    0x40000
  50 #define GRETH_RXBD_IP        0x80000
  51 #define GRETH_RXBD_IP_CSERR  0x100000
  52 #define GRETH_RXBD_UDP       0x200000
  53 #define GRETH_RXBD_UDP_CSERR 0x400000
  54 #define GRETH_RXBD_TCP       0x800000
  55 #define GRETH_RXBD_TCP_CSERR 0x1000000
  56 #define GRETH_RXBD_IP_FRAG   0x2000000
  57 #define GRETH_RXBD_MCAST     0x4000000
  58
  59 /* Descriptor parameters */
  60 #define GRETH_TXBD_NUM 128
  61 #define GRETH_TXBD_NUM_MASK (GRETH_TXBD_NUM-1)
  62 #define GRETH_TX_BUF_SIZE 2048
  63 #define GRETH_RXBD_NUM 128
  64 #define GRETH_RXBD_NUM_MASK (GRETH_RXBD_NUM-1)
  65 #define GRETH_RX_BUF_SIZE 2048
  66
  67 /* Buffers per page */
  68 #define GRETH_RX_BUF_PPGAE      (PAGE_SIZE/GRETH_RX_BUF_SIZE)
  69 #define GRETH_TX_BUF_PPGAE      (PAGE_SIZE/GRETH_TX_BUF_SIZE)
  70
  71 /* How many pages are needed for buffers */
  72 #define GRETH_RX_BUF_PAGE_NUM   (GRETH_RXBD_NUM/GRETH_RX_BUF_PPGAE)
  73 #define GRETH_TX_BUF_PAGE_NUM   (GRETH_TXBD_NUM/GRETH_TX_BUF_PPGAE)
  74
  75 /* Buffer size.
  76  * Gbit MAC uses tagged maximum frame size which is 1518 excluding CRC.
  77  * Set to 1520 to make all buffers word aligned for non-gbit MAC.
  78  */
  79 #define MAX_FRAME_SIZE          1520
  80
  81 /* GRETH APB registers */
  82 struct greth_regs {
  83         u32 control;
  84         u32 status;
  85         u32 esa_msb;
  86         u32 esa_lsb;
  87         u32 mdio;
  88         u32 tx_desc_p;
  89         u32 rx_desc_p;
  90         u32 edclip;
  91         u32 hash_msb;
  92         u32 hash_lsb;
  93 };
  94
  95 /* GRETH buffer descriptor */
  96 struct greth_bd {
  97         u32 stat;
  98         u32 addr;
  99 };
 100
 101 struct greth_private {
 102         struct sk_buff *rx_skbuff[GRETH_RXBD_NUM];
 103         struct sk_buff *tx_skbuff[GRETH_TXBD_NUM];
 104
 105         unsigned char *tx_bufs[GRETH_TXBD_NUM];
 106         unsigned char *rx_bufs[GRETH_RXBD_NUM];
 107         u16 tx_bufs_length[GRETH_TXBD_NUM];
 108
 109         u16 tx_next;
 110         u16 tx_last;
 111         u16 tx_free; /* only used on 10/100Mbit */
 112         u16 rx_cur;
 113
 114         struct greth_regs *regs;        /* Address of controller registers. */
 115         struct greth_bd *rx_bd_base;    /* Address of Rx BDs. */
 116         struct greth_bd *tx_bd_base;    /* Address of Tx BDs. */
 117         dma_addr_t rx_bd_base_phys;
 118         dma_addr_t tx_bd_base_phys;
 119
 120         int irq;
 121
 122         struct device *dev;             /* Pointer to platform_device->dev */
 123         struct net_device *netdev;
 124         struct napi_struct napi;
 125         spinlock_t devlock;
 126
 127         struct mii_bus *mdio;
 128         unsigned int link;
 129         unsigned int speed;
 130         unsigned int duplex;
 131
 132         u32 msg_enable;
 133
 134         u8 phyaddr;
 135         u8 multicast;
 136         u8 gbit_mac;
 137         u8 mdio_int_en;
 138         u8 edcl;
 139 };
 140
 141 #endif