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 /* GRETH APB registers */
81 struct greth_regs {
82 	u32 control;
83 	u32 status;
84 	u32 esa_msb;
85 	u32 esa_lsb;
86 	u32 mdio;
87 	u32 tx_desc_p;
88 	u32 rx_desc_p;
89 	u32 edclip;
90 	u32 hash_msb;
91 	u32 hash_lsb;
92 };
93 
94 /* GRETH buffer descriptor */
95 struct greth_bd {
96 	u32 stat;
97 	u32 addr;
98 };
99 
100 struct greth_private {
101 	struct sk_buff *rx_skbuff[GRETH_RXBD_NUM];
102 	struct sk_buff *tx_skbuff[GRETH_TXBD_NUM];
103 
104 	unsigned char *tx_bufs[GRETH_TXBD_NUM];
105 	unsigned char *rx_bufs[GRETH_RXBD_NUM];
106 	u16 tx_bufs_length[GRETH_TXBD_NUM];
107 
108 	u16 tx_next;
109 	u16 tx_last;
110 	u16 tx_free; /* only used on 10/100Mbit */
111 	u16 rx_cur;
112 
113 	struct greth_regs *regs;	/* Address of controller registers. */
114 	struct greth_bd *rx_bd_base;	/* Address of Rx BDs. */
115 	struct greth_bd *tx_bd_base;	/* Address of Tx BDs. */
116 	dma_addr_t rx_bd_base_phys;
117 	dma_addr_t tx_bd_base_phys;
118 
119 	int irq;
120 
121 	struct device *dev;	        /* Pointer to platform_device->dev */
122 	struct net_device *netdev;
123 	struct napi_struct napi;
124 	spinlock_t devlock;
125 
126 	struct phy_device *phy;
127 	struct mii_bus *mdio;
128 	int mdio_irqs[PHY_MAX_ADDR];
129 	unsigned int link;
130 	unsigned int speed;
131 	unsigned int duplex;
132 
133 	u32 msg_enable;
134 
135 	u8 phyaddr;
136 	u8 multicast;
137 	u8 gbit_mac;
138 	u8 mdio_int_en;
139 	u8 edcl;
140 };
141 
142 #endif
143