drivers/net/greth.h

   1 #ifndef GRETH_H
   2 #define GRETH_H
   3
   4 #include <linux/phy.h>
   5
   6 /* Register bits and masks */
   7 #define GRETH_RESET 0x40
   8 #define GRETH_MII_BUSY 0x8
   9 #define GRETH_MII_NVALID 0x10
  10
  11 #define GRETH_CTRL_FD         0x10
  12 #define GRETH_CTRL_PR         0x20
  13 #define GRETH_CTRL_SP         0x80
  14 #define GRETH_CTRL_GB         0x100
  15 #define GRETH_CTRL_PSTATIEN   0x400
  16 #define GRETH_CTRL_MCEN       0x800
  17 #define GRETH_CTRL_DISDUPLEX  0x1000
  18 #define GRETH_STATUS_PHYSTAT  0x100
  19
  20 #define GRETH_BD_EN 0x800
  21 #define GRETH_BD_WR 0x1000
  22 #define GRETH_BD_IE 0x2000
  23 #define GRETH_BD_LEN 0x7FF
  24
  25 #define GRETH_TXEN 0x1
  26 #define GRETH_INT_TE 0x2
  27 #define GRETH_INT_TX 0x8
  28 #define GRETH_TXI 0x4
  29 #define GRETH_TXBD_STATUS 0x0001C000
  30 #define GRETH_TXBD_MORE 0x20000
  31 #define GRETH_TXBD_IPCS 0x40000
  32 #define GRETH_TXBD_TCPCS 0x80000
  33 #define GRETH_TXBD_UDPCS 0x100000
  34 #define GRETH_TXBD_CSALL (GRETH_TXBD_IPCS | GRETH_TXBD_TCPCS | GRETH_TXBD_UDPCS)
  35 #define GRETH_TXBD_ERR_LC 0x10000
  36 #define GRETH_TXBD_ERR_UE 0x4000
  37 #define GRETH_TXBD_ERR_AL 0x8000
  38
  39 #define GRETH_INT_RE         0x1
  40 #define GRETH_INT_RX         0x4
  41 #define GRETH_RXEN           0x2
  42 #define GRETH_RXI            0x8
  43 #define GRETH_RXBD_STATUS    0xFFFFC000
  44 #define GRETH_RXBD_ERR_AE    0x4000
  45 #define GRETH_RXBD_ERR_FT    0x8000
  46 #define GRETH_RXBD_ERR_CRC   0x10000
  47 #define GRETH_RXBD_ERR_OE    0x20000
  48 #define GRETH_RXBD_ERR_LE    0x40000
  49 #define GRETH_RXBD_IP        0x80000
  50 #define GRETH_RXBD_IP_CSERR  0x100000
  51 #define GRETH_RXBD_UDP       0x200000
  52 #define GRETH_RXBD_UDP_CSERR 0x400000
  53 #define GRETH_RXBD_TCP       0x800000
  54 #define GRETH_RXBD_TCP_CSERR 0x1000000
  55 #define GRETH_RXBD_IP_FRAG   0x2000000
  56 #define GRETH_RXBD_MCAST     0x4000000
  57
  58 /* Descriptor parameters */
  59 #define GRETH_TXBD_NUM 128
  60 #define GRETH_TXBD_NUM_MASK (GRETH_TXBD_NUM-1)
  61 #define GRETH_TX_BUF_SIZE 2048
  62 #define GRETH_RXBD_NUM 128
  63 #define GRETH_RXBD_NUM_MASK (GRETH_RXBD_NUM-1)
  64 #define GRETH_RX_BUF_SIZE 2048
  65
  66 /* Buffers per page */
  67 #define GRETH_RX_BUF_PPGAE      (PAGE_SIZE/GRETH_RX_BUF_SIZE)
  68 #define GRETH_TX_BUF_PPGAE      (PAGE_SIZE/GRETH_TX_BUF_SIZE)
  69
  70 /* How many pages are needed for buffers */
  71 #define GRETH_RX_BUF_PAGE_NUM   (GRETH_RXBD_NUM/GRETH_RX_BUF_PPGAE)
  72 #define GRETH_TX_BUF_PAGE_NUM   (GRETH_TXBD_NUM/GRETH_TX_BUF_PPGAE)
  73
  74 /* Buffer size.
  75  * Gbit MAC uses tagged maximum frame size which is 1518 excluding CRC.
  76  * Set to 1520 to make all buffers word aligned for non-gbit MAC.
  77  */
  78 #define MAX_FRAME_SIZE          1520
  79
  80 /* Flags */
  81 #define GRETH_FLAG_RX_CSUM 0x1
  82
  83 /* GRETH APB registers */
  84 struct greth_regs {
  85         u32 control;
  86         u32 status;
  87         u32 esa_msb;
  88         u32 esa_lsb;
  89         u32 mdio;
  90         u32 tx_desc_p;
  91         u32 rx_desc_p;
  92         u32 edclip;
  93         u32 hash_msb;
  94         u32 hash_lsb;
  95 };
  96
  97 /* GRETH buffer descriptor */
  98 struct greth_bd {
  99         u32 stat;
 100         u32 addr;
 101 };
 102
 103 struct greth_private {
 104         struct sk_buff *rx_skbuff[GRETH_RXBD_NUM];
 105         struct sk_buff *tx_skbuff[GRETH_TXBD_NUM];
 106
 107         unsigned char *tx_bufs[GRETH_TXBD_NUM];
 108         unsigned char *rx_bufs[GRETH_RXBD_NUM];
 109
 110         u16 tx_next;
 111         u16 tx_last;
 112         u16 tx_free;
 113         u16 rx_cur;
 114
 115         struct greth_regs *regs;        /* Address of controller registers. */
 116         struct greth_bd *rx_bd_base;    /* Address of Rx BDs. */
 117         struct greth_bd *tx_bd_base;    /* Address of Tx BDs. */
 118         dma_addr_t rx_bd_base_phys;
 119         dma_addr_t tx_bd_base_phys;
 120
 121         int irq;
 122
 123         struct device *dev;             /* Pointer to platform_device->dev */
 124         struct net_device *netdev;
 125         struct napi_struct napi;
 126         spinlock_t devlock;
 127
 128         struct phy_device *phy;
 129         struct mii_bus *mdio;
 130         int mdio_irqs[PHY_MAX_ADDR];
 131         unsigned int link;
 132         unsigned int speed;
 133         unsigned int duplex;
 134
 135         u32 msg_enable;
 136         u32 flags;
 137
 138         u8 phyaddr;
 139         u8 multicast;
 140         u8 gbit_mac;
 141         u8 mdio_int_en;
 142         u8 edcl;
 143 };
 144
 145 #endif