1 /* sbni.h:  definitions for a Granch SBNI12 driver, version 5.0.0
2  * Written 2001 Denis I.Timofeev (timofeev@granch.ru)
3  * This file is distributed under the GNU GPL
4  */
5 
6 #ifndef SBNI_H
7 #define SBNI_H
8 
9 #ifdef SBNI_DEBUG
10 #define DP( A ) A
11 #else
12 #define DP( A )
13 #endif
14 
15 
16 /* We don't have official vendor id yet... */
17 #define SBNI_PCI_VENDOR 	0x55
18 #define SBNI_PCI_DEVICE 	0x9f
19 
20 #define ISA_MODE 0x00
21 #define PCI_MODE 0x01
22 
23 #define	SBNI_IO_EXTENT	4
24 
25 enum sbni_reg {
26 	CSR0 = 0,
27 	CSR1 = 1,
28 	DAT  = 2
29 };
30 
31 /* CSR0 mapping */
32 enum {
33 	BU_EMP = 0x02,
34 	RC_CHK = 0x04,
35 	CT_ZER = 0x08,
36 	TR_REQ = 0x10,
37 	TR_RDY = 0x20,
38 	EN_INT = 0x40,
39 	RC_RDY = 0x80
40 };
41 
42 
43 /* CSR1 mapping */
44 #define PR_RES 0x80
45 
46 struct sbni_csr1 {
47 #ifdef __LITTLE_ENDIAN_BITFIELD
48 	u8 rxl	: 5;
49 	u8 rate	: 2;
50 	u8 	: 1;
51 #else
52 	u8 	: 1;
53 	u8 rate	: 2;
54 	u8 rxl	: 5;
55 #endif
56 };
57 
58 /* fields in frame header */
59 #define FRAME_ACK_MASK  (unsigned short)0x7000
60 #define FRAME_LEN_MASK  (unsigned short)0x03FF
61 #define FRAME_FIRST     (unsigned short)0x8000
62 #define FRAME_RETRY     (unsigned short)0x0800
63 
64 #define FRAME_SENT_BAD  (unsigned short)0x4000
65 #define FRAME_SENT_OK   (unsigned short)0x3000
66 
67 
68 /* state flags */
69 enum {
70 	FL_WAIT_ACK    = 0x01,
71 	FL_NEED_RESEND = 0x02,
72 	FL_PREV_OK     = 0x04,
73 	FL_SLOW_MODE   = 0x08,
74 	FL_SECONDARY   = 0x10,
75 #ifdef CONFIG_SBNI_MULTILINE
76 	FL_SLAVE       = 0x20,
77 #endif
78 	FL_LINE_DOWN   = 0x40
79 };
80 
81 
82 enum {
83 	DEFAULT_IOBASEADDR = 0x210,
84 	DEFAULT_INTERRUPTNUMBER = 5,
85 	DEFAULT_RATE = 0,
86 	DEFAULT_FRAME_LEN = 1012
87 };
88 
89 #define DEF_RXL_DELTA	-1
90 #define DEF_RXL		0xf
91 
92 #define SBNI_SIG 0x5a
93 
94 #define	SBNI_MIN_LEN	60	/* Shortest Ethernet frame without FCS */
95 #define SBNI_MAX_FRAME	1023
96 #define ETHER_MAX_LEN	1518
97 
98 #define SBNI_TIMEOUT	(HZ/10)
99 
100 #define TR_ERROR_COUNT	32
101 #define CHANGE_LEVEL_START_TICKS 4
102 
103 #define SBNI_MAX_NUM_CARDS	16
104 
105 /* internal SBNI-specific statistics */
106 struct sbni_in_stats {
107 	u32	all_rx_number;
108 	u32	bad_rx_number;
109 	u32	timeout_number;
110 	u32	all_tx_number;
111 	u32	resend_tx_number;
112 };
113 
114 /* SBNI ioctl params */
115 #define SIOCDEVGETINSTATS 	SIOCDEVPRIVATE
116 #define SIOCDEVRESINSTATS 	SIOCDEVPRIVATE+1
117 #define SIOCDEVGHWSTATE   	SIOCDEVPRIVATE+2
118 #define SIOCDEVSHWSTATE   	SIOCDEVPRIVATE+3
119 #define SIOCDEVENSLAVE  	SIOCDEVPRIVATE+4
120 #define SIOCDEVEMANSIPATE  	SIOCDEVPRIVATE+5
121 
122 
123 /* data packet for SIOCDEVGHWSTATE/SIOCDEVSHWSTATE ioctl requests */
124 struct sbni_flags {
125 	u32	rxl		: 4;
126 	u32	rate		: 2;
127 	u32	fixed_rxl	: 1;
128 	u32	slow_mode	: 1;
129 	u32	mac_addr	: 24;
130 };
131 
132 /*
133  * CRC-32 stuff
134  */
135 #define CRC32(c,crc) (crc32tab[((size_t)(crc) ^ (c)) & 0xff] ^ (((crc) >> 8) & 0x00FFFFFF))
136       /* CRC generator 0xEDB88320 */
137       /* CRC remainder 0x2144DF1C */
138       /* CRC initial value 0x00000000 */
139 #define CRC32_REMAINDER 0x2144DF1C
140 #define CRC32_INITIAL 0x00000000
141 
142 #ifndef __initdata
143 #define __initdata
144 #endif
145 
146 #endif
147 
148