linux/drivers/net/ethernet/aeroflex/greth.h
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   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 */
  82struct 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 */
  96struct greth_bd {
  97        u32 stat;
  98        u32 addr;
  99};
 100
 101struct 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
 142
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