1
2
3
4
5#include <linux/if_ether.h>
6#include <linux/types.h>
7
8
9struct rx_header {
10 ushort pad;
11 ushort rx_count;
12 ushort rx_status;
13 ushort cur_addr;
14};
15
16#define PAR_DATA 0
17#define PAR_STATUS 1
18#define PAR_CONTROL 2
19
20#define Ctrl_LNibRead 0x08
21#define Ctrl_HNibRead 0
22#define Ctrl_LNibWrite 0x08
23#define Ctrl_HNibWrite 0
24#define Ctrl_SelData 0x04
25#define Ctrl_IRQEN 0x10
26
27#define EOW 0xE0
28#define EOC 0xE0
29#define WrAddr 0x40
30#define RdAddr 0xC0
31#define HNib 0x10
32
33enum page0_regs {
34
35
36
37 PAR0 = 0, PAR1 = 1, PAR2 = 2, PAR3 = 3, PAR4 = 4, PAR5 = 5,
38 TxCNT0 = 6, TxCNT1 = 7,
39 TxSTAT = 8, RxSTAT = 9,
40 ISR = 10, IMR = 11,
41 CMR1 = 12,
42 CMR2 = 13,
43 MODSEL = 14,
44 MAR = 14,
45 CMR2_h = 0x1d,
46};
47
48enum eepage_regs {
49 PROM_CMD = 6,
50 PROM_DATA = 7
51};
52
53#define ISR_TxOK 0x01
54#define ISR_RxOK 0x04
55#define ISR_TxErr 0x02
56#define ISRh_RxErr 0x11
57
58#define CMR1h_MUX 0x08
59#define CMR1h_RESET 0x04
60#define CMR1h_RxENABLE 0x02
61#define CMR1h_TxENABLE 0x01
62#define CMR1h_TxRxOFF 0x00
63#define CMR1_ReXmit 0x08
64#define CMR1_Xmit 0x04
65#define CMR1_IRQ 0x02
66#define CMR1_BufEnb 0x01
67#define CMR1_NextPkt 0x01
68
69#define CMR2_NULL 8
70#define CMR2_IRQOUT 9
71#define CMR2_RAMTEST 10
72#define CMR2_EEPROM 12
73
74#define CMR2h_OFF 0
75#define CMR2h_Physical 1
76#define CMR2h_Normal 2
77#define CMR2h_PROMISC 3
78
79
80
81
82static inline unsigned char inbyte(unsigned short port)
83{
84 unsigned char _v;
85
86 __asm__ __volatile__ ("inb %w1,%b0" : "=a" (_v) : "d" (port));
87 return _v;
88}
89
90
91
92
93static inline unsigned char read_nibble(short port, unsigned char offset)
94{
95 unsigned char retval;
96
97 outb(EOC+offset, port + PAR_DATA);
98 outb(RdAddr+offset, port + PAR_DATA);
99 inbyte(port + PAR_STATUS);
100 retval = inbyte(port + PAR_STATUS);
101 outb(EOC+offset, port + PAR_DATA);
102
103 return retval;
104}
105
106
107
108static inline unsigned char read_byte_mode0(short ioaddr)
109{
110 unsigned char low_nib;
111
112 outb(Ctrl_LNibRead, ioaddr + PAR_CONTROL);
113 inbyte(ioaddr + PAR_STATUS);
114 low_nib = (inbyte(ioaddr + PAR_STATUS) >> 3) & 0x0f;
115 outb(Ctrl_HNibRead, ioaddr + PAR_CONTROL);
116 inbyte(ioaddr + PAR_STATUS);
117 inbyte(ioaddr + PAR_STATUS);
118 return low_nib | ((inbyte(ioaddr + PAR_STATUS) << 1) & 0xf0);
119}
120
121
122static inline unsigned char read_byte_mode2(short ioaddr)
123{
124 unsigned char low_nib;
125
126 outb(Ctrl_LNibRead, ioaddr + PAR_CONTROL);
127 inbyte(ioaddr + PAR_STATUS);
128 low_nib = (inbyte(ioaddr + PAR_STATUS) >> 3) & 0x0f;
129 outb(Ctrl_HNibRead, ioaddr + PAR_CONTROL);
130 inbyte(ioaddr + PAR_STATUS);
131 return low_nib | ((inbyte(ioaddr + PAR_STATUS) << 1) & 0xf0);
132}
133
134
135static inline unsigned char read_byte_mode4(short ioaddr)
136{
137 unsigned char low_nib;
138
139 outb(RdAddr | MAR, ioaddr + PAR_DATA);
140 low_nib = (inbyte(ioaddr + PAR_STATUS) >> 3) & 0x0f;
141 outb(RdAddr | HNib | MAR, ioaddr + PAR_DATA);
142 return low_nib | ((inbyte(ioaddr + PAR_STATUS) << 1) & 0xf0);
143}
144
145
146static inline unsigned char read_byte_mode6(short ioaddr)
147{
148 unsigned char low_nib;
149
150 outb(RdAddr | MAR, ioaddr + PAR_DATA);
151 inbyte(ioaddr + PAR_STATUS);
152 low_nib = (inbyte(ioaddr + PAR_STATUS) >> 3) & 0x0f;
153 outb(RdAddr | HNib | MAR, ioaddr + PAR_DATA);
154 inbyte(ioaddr + PAR_STATUS);
155 return low_nib | ((inbyte(ioaddr + PAR_STATUS) << 1) & 0xf0);
156}
157
158static inline void
159write_reg(short port, unsigned char reg, unsigned char value)
160{
161 unsigned char outval;
162
163 outb(EOC | reg, port + PAR_DATA);
164 outval = WrAddr | reg;
165 outb(outval, port + PAR_DATA);
166 outb(outval, port + PAR_DATA);
167
168 outval &= 0xf0;
169 outval |= value;
170 outb(outval, port + PAR_DATA);
171 outval &= 0x1f;
172 outb(outval, port + PAR_DATA);
173 outb(outval, port + PAR_DATA);
174
175 outb(EOC | outval, port + PAR_DATA);
176}
177
178static inline void
179write_reg_high(short port, unsigned char reg, unsigned char value)
180{
181 unsigned char outval = EOC | HNib | reg;
182
183 outb(outval, port + PAR_DATA);
184 outval &= WrAddr | HNib | 0x0f;
185 outb(outval, port + PAR_DATA);
186 outb(outval, port + PAR_DATA);
187
188 outval = WrAddr | HNib | value;
189 outb(outval, port + PAR_DATA);
190 outval &= HNib | 0x0f;
191 outb(outval, port + PAR_DATA);
192 outb(outval, port + PAR_DATA);
193
194 outb(EOC | HNib | outval, port + PAR_DATA);
195}
196
197
198static inline void
199write_reg_byte(short port, unsigned char reg, unsigned char value)
200{
201 unsigned char outval;
202
203 outb(EOC | reg, port + PAR_DATA);
204 outval = WrAddr | reg;
205 outb(outval, port + PAR_DATA);
206 outb(outval, port + PAR_DATA);
207
208 outb((outval & 0xf0) | (value & 0x0f), port + PAR_DATA);
209 outb(value & 0x0f, port + PAR_DATA);
210 value >>= 4;
211 outb(value, port + PAR_DATA);
212 outb(0x10 | value, port + PAR_DATA);
213 outb(0x10 | value, port + PAR_DATA);
214
215 outb(EOC | value, port + PAR_DATA);
216}
217
218
219
220
221
222
223
224static inline void write_byte_mode0(short ioaddr, unsigned char value)
225{
226 outb(value & 0x0f, ioaddr + PAR_DATA);
227 outb((value>>4) | 0x10, ioaddr + PAR_DATA);
228}
229
230static inline void write_byte_mode1(short ioaddr, unsigned char value)
231{
232 outb(value & 0x0f, ioaddr + PAR_DATA);
233 outb(Ctrl_IRQEN | Ctrl_LNibWrite, ioaddr + PAR_CONTROL);
234 outb((value>>4) | 0x10, ioaddr + PAR_DATA);
235 outb(Ctrl_IRQEN | Ctrl_HNibWrite, ioaddr + PAR_CONTROL);
236}
237
238
239static inline void write_word_mode0(short ioaddr, unsigned short value)
240{
241 outb(value & 0x0f, ioaddr + PAR_DATA);
242 value >>= 4;
243 outb((value & 0x0f) | 0x10, ioaddr + PAR_DATA);
244 value >>= 4;
245 outb(value & 0x0f, ioaddr + PAR_DATA);
246 value >>= 4;
247 outb((value & 0x0f) | 0x10, ioaddr + PAR_DATA);
248}
249
250
251#define EE_SHIFT_CLK 0x04
252#define EE_CS 0x02
253#define EE_CLK_HIGH 0x12
254#define EE_CLK_LOW 0x16
255#define EE_DATA_WRITE 0x01
256#define EE_DATA_READ 0x08
257
258
259#define eeprom_delay(ticks) \
260do { int _i = 40; while (--_i > 0) { __SLOW_DOWN_IO; } } while (0)
261
262
263#define EE_WRITE_CMD(offset) (((5 << 6) + (offset)) << 17)
264#define EE_READ(offset) (((6 << 6) + (offset)) << 17)
265#define EE_ERASE(offset) (((7 << 6) + (offset)) << 17)
266#define EE_CMD_SIZE 27
267