1 |
dpavlin |
8 |
/* |
2 |
|
|
* Cisco router simulation platform. |
3 |
|
|
* Copyright (c) 2005,2006 Christophe Fillot. |
4 |
|
|
* |
5 |
|
|
* NMC93C46/NMC93C56 Serial EEPROM. |
6 |
|
|
*/ |
7 |
|
|
|
8 |
|
|
#ifndef __NMC93CX6_H__ |
9 |
|
|
#define __NMC93CX6_H__ |
10 |
|
|
|
11 |
|
|
#include <sys/types.h> |
12 |
|
|
#include "utils.h" |
13 |
|
|
#include "cisco_eeprom.h" |
14 |
|
|
|
15 |
|
|
/* EEPROM types */ |
16 |
|
|
enum { |
17 |
|
|
EEPROM_TYPE_NMC93C46, |
18 |
|
|
EEPROM_TYPE_NMC93C56, |
19 |
|
|
}; |
20 |
|
|
|
21 |
dpavlin |
11 |
/* EEPROM data bit order */ |
22 |
|
|
enum { |
23 |
|
|
EEPROM_DORD_NORMAL = 0, |
24 |
|
|
EEPROM_DORD_REVERSED, |
25 |
|
|
}; |
26 |
|
|
|
27 |
|
|
/* EEPROM debugging */ |
28 |
|
|
enum { |
29 |
|
|
EEPROM_DEBUG_DISABLED = 0, |
30 |
|
|
EEPROM_DEBUG_ENABLED, |
31 |
|
|
}; |
32 |
|
|
|
33 |
|
|
/* EEPROM DOUT default status */ |
34 |
|
|
enum { |
35 |
|
|
EEPROM_DOUT_HIGH = 0, |
36 |
|
|
EEPROM_DOUT_KEEP, |
37 |
|
|
}; |
38 |
|
|
|
39 |
dpavlin |
8 |
/* 8 groups with 4 differents bits (clock,select,data_in,data_out) */ |
40 |
dpavlin |
11 |
#define NMC93CX6_MAX_EEPROM_PER_GROUP 16 |
41 |
dpavlin |
8 |
|
42 |
|
|
/* NMC93C46 EEPROM command bit length */ |
43 |
|
|
#define NMC93C46_CMD_BITLEN 9 |
44 |
|
|
|
45 |
|
|
/* NMC93C56 EEPROM command bit length */ |
46 |
|
|
#define NMC93C56_CMD_BITLEN 11 |
47 |
|
|
|
48 |
|
|
/* NMC93C46 EEPROM data bit length */ |
49 |
|
|
#define NMC93CX6_CMD_DATALEN 16 |
50 |
|
|
|
51 |
|
|
/* NMC93C46 EEPROM commands: SB (1) OP(2) Address(6/9) */ |
52 |
|
|
#define NMC93CX6_CMD_CONTROL (0x1 | 0x0) |
53 |
|
|
#define NMC93CX6_CMD_WRDS (0x1 | 0x0 | 0x00) |
54 |
|
|
#define NMC93CX6_CMD_ERASE_ALL (0x1 | 0x0 | 0x08) |
55 |
|
|
#define NMC93CX6_CMD_WRITE_ALL (0x1 | 0x0 | 0x10) |
56 |
|
|
#define NMC93CX6_CMD_WREN (0x1 | 0x0 | 0x18) |
57 |
|
|
#define NMC93CX6_CMD_READ (0x1 | 0x2) |
58 |
|
|
#define NMC93CX6_CMD_WRITE (0x1 | 0x4) |
59 |
|
|
#define NMC93CX6_CMD_ERASE (0x1 | 0x6) |
60 |
|
|
|
61 |
|
|
struct nmc93cX6_eeprom_def { |
62 |
|
|
u_int clock_bit; |
63 |
|
|
u_int select_bit; |
64 |
|
|
u_int din_bit; |
65 |
|
|
u_int dout_bit; |
66 |
|
|
}; |
67 |
|
|
|
68 |
|
|
struct nmc93cX6_eeprom_state { |
69 |
|
|
u_int cmd_len; |
70 |
|
|
u_int cmd_val; |
71 |
|
|
u_int state; |
72 |
|
|
u_int dataout_pos; |
73 |
|
|
u_int dataout_val; |
74 |
|
|
}; |
75 |
|
|
|
76 |
|
|
struct nmc93cX6_group { |
77 |
|
|
u_int eeprom_type; |
78 |
|
|
u_int nr_eeprom; |
79 |
|
|
u_int eeprom_reg; |
80 |
dpavlin |
11 |
u_int reverse_data; |
81 |
|
|
u_int dout_status; |
82 |
|
|
int debug; |
83 |
dpavlin |
8 |
char *description; |
84 |
|
|
const struct nmc93cX6_eeprom_def *def[NMC93CX6_MAX_EEPROM_PER_GROUP]; |
85 |
|
|
struct nmc93cX6_eeprom_state state[NMC93CX6_MAX_EEPROM_PER_GROUP]; |
86 |
|
|
struct cisco_eeprom *eeprom[NMC93CX6_MAX_EEPROM_PER_GROUP]; |
87 |
|
|
}; |
88 |
|
|
|
89 |
|
|
/* Handle write */ |
90 |
|
|
void nmc93cX6_write(struct nmc93cX6_group *g,u_int data); |
91 |
|
|
|
92 |
dpavlin |
11 |
/* Returns the TRUE if the EEPROM is active */ |
93 |
|
|
u_int nmc93cX6_is_active(struct nmc93cX6_group *g,u_int group_id); |
94 |
|
|
|
95 |
|
|
/* Returns the DOUT bit value */ |
96 |
|
|
u_int nmc93cX6_get_dout(struct nmc93cX6_group *g,u_int group_id); |
97 |
|
|
|
98 |
dpavlin |
8 |
/* Handle read */ |
99 |
|
|
u_int nmc93cX6_read(struct nmc93cX6_group *p); |
100 |
|
|
|
101 |
|
|
#endif /* __NMC93CX6_H__ */ |