/[dynamips]/upstream/dynamips-0.2.6-RC2/nmc93c46.h
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Annotation of /upstream/dynamips-0.2.6-RC2/nmc93c46.h

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Revision 2 - (hide annotations)
Sat Oct 6 16:03:58 2007 UTC (14 years, 10 months ago) by dpavlin
Original Path: upstream/dynamips-0.2.6-RC1/nmc93c46.h
File MIME type: text/plain
File size: 1589 byte(s)
import dynamips-0.2.6-RC1

1 dpavlin 1 /*
2     * Simulates a NMC93C46 Serial EEPROM.
3     * Copyright (c) 2005,2006 Christophe Fillot.
4     */
5    
6     #ifndef __NMC93C46_H__
7     #define __NMC93C46_H__
8    
9     #include <sys/types.h>
10     #include "utils.h"
11    
12     /* 8 groups with 4 differents bits (clock,select,data_in,data_out) */
13     #define NMC93C46_MAX_EEPROM_PER_GROUP 8
14    
15     /* NMC93C46 EEPROM command bit length */
16     #define NMC93C46_CMD_BITLEN 9
17    
18     /* NMC93C46 EEPROM data bit length */
19     #define NMC93C46_CMD_DATALEN 16
20    
21     /* NMC93C46 EEPROM commands: SB (1) OP(2) Address(5) */
22     #define NMC93C46_CMD_CONTROL (0x1 | 0x0)
23     #define NMC93C46_CMD_WRDS (0x1 | 0x0 | 0x00)
24     #define NMC93C46_CMD_ERASE_ALL (0x1 | 0x0 | 0x08)
25     #define NMC93C46_CMD_WRITE_ALL (0x1 | 0x0 | 0x10)
26     #define NMC93C46_CMD_WREN (0x1 | 0x0 | 0x18)
27     #define NMC93C46_CMD_READ (0x1 | 0x2)
28     #define NMC93C46_CMD_WRITE (0x1 | 0x4)
29     #define NMC93C46_CMD_ERASE (0x1 | 0x6)
30    
31     struct nmc93c46_eeprom_def {
32     u_int clock_bit;
33     u_int select_bit;
34     u_int din_bit;
35     u_int dout_bit;
36     m_uint16_t *data;
37     u_int data_len;
38     };
39    
40     struct nmc93c46_eeprom_state {
41     u_int cmd_len;
42     u_int cmd_val;
43     u_int state;
44     u_int dataout_pos;
45     u_int dataout_val;
46     };
47    
48     struct nmc93c46_group {
49     u_int nr_eeprom;
50     u_int eeprom_reg;
51     char *description;
52     int debug;
53     struct nmc93c46_eeprom_def *def[NMC93C46_MAX_EEPROM_PER_GROUP];
54     struct nmc93c46_eeprom_state state[NMC93C46_MAX_EEPROM_PER_GROUP];
55     };
56    
57     /* Handle write */
58     void nmc93c46_write(struct nmc93c46_group *g,u_int data);
59    
60     /* Handle read */
61     u_int nmc93c46_read(struct nmc93c46_group *p);
62    
63     #endif /* __NMC93C46_H__ */

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