/[dynamips]/trunk/nmc93cX6.h
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Annotation of /trunk/nmc93cX6.h

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Sat Oct 6 16:45:40 2007 UTC (12 years ago) by dpavlin
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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__ */

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