1 /*
2  * Kernel CAPI 2.0 Module
3  *
4  * Copyright 1999 by Carsten Paeth <calle@calle.de>
5  * Copyright 2002 by Kai Germaschewski <kai@germaschewski.name>
6  *
7  * This software may be used and distributed according to the terms
8  * of the GNU General Public License, incorporated herein by reference.
9  *
10  */
11 
12 
13 #include <linux/kernel.h>
14 #include <linux/spinlock.h>
15 #include <linux/list.h>
16 #include <linux/isdn/capilli.h>
17 
18 #ifdef KCAPI_DEBUG
19 #define DBG(format, arg...) do {					\
20 		printk(KERN_DEBUG "%s: " format "\n" , __func__ , ## arg); \
21 	} while (0)
22 #else
23 #define DBG(format, arg...) /* */
24 #endif
25 
26 enum {
27 	CAPI_CTR_DETACHED = 0,
28 	CAPI_CTR_DETECTED = 1,
29 	CAPI_CTR_LOADING  = 2,
30 	CAPI_CTR_RUNNING  = 3,
31 };
32 
33 extern struct capi_ctr *capi_controller[CAPI_MAXCONTR];
34 extern struct mutex capi_controller_lock;
35 
36 extern struct capi20_appl *capi_applications[CAPI_MAXAPPL];
37 
38 void kcapi_proc_init(void);
39 void kcapi_proc_exit(void);
40 
41 struct capi20_appl {
42 	u16 applid;
43 	capi_register_params rparam;
44 	void (*recv_message)(struct capi20_appl *ap, struct sk_buff *skb);
45 	void *private;
46 
47 	/* internal to kernelcapi.o */
48 	unsigned long nrecvctlpkt;
49 	unsigned long nrecvdatapkt;
50 	unsigned long nsentctlpkt;
51 	unsigned long nsentdatapkt;
52 	struct mutex recv_mtx;
53 	struct sk_buff_head recv_queue;
54 	struct work_struct recv_work;
55 	int release_in_progress;
56 };
57 
58 u16 capi20_isinstalled(void);
59 u16 capi20_register(struct capi20_appl *ap);
60 u16 capi20_release(struct capi20_appl *ap);
61 u16 capi20_put_message(struct capi20_appl *ap, struct sk_buff *skb);
62 u16 capi20_get_manufacturer(u32 contr, u8 buf[CAPI_MANUFACTURER_LEN]);
63 u16 capi20_get_version(u32 contr, struct capi_version *verp);
64 u16 capi20_get_serial(u32 contr, u8 serial[CAPI_SERIAL_LEN]);
65 u16 capi20_get_profile(u32 contr, struct capi_profile *profp);
66 int capi20_manufacturer(unsigned long cmd, void __user *data);
67 
68 #define CAPICTR_UP			0
69 #define CAPICTR_DOWN			1
70 
71 int kcapi_init(void);
72 void kcapi_exit(void);
73 
74 /*----- basic-type definitions -----*/
75 
76 typedef __u8 *_cstruct;
77 
78 typedef enum {
79 	CAPI_COMPOSE,
80 	CAPI_DEFAULT
81 } _cmstruct;
82 
83 /*
84    The _cmsg structure contains all possible CAPI 2.0 parameter.
85    All parameters are stored here first. The function CAPI_CMSG_2_MESSAGE
86    assembles the parameter and builds CAPI2.0 conform messages.
87    CAPI_MESSAGE_2_CMSG disassembles CAPI 2.0 messages and stores the
88    parameter in the _cmsg structure
89  */
90 
91 typedef struct {
92 	/* Header */
93 	__u16 ApplId;
94 	__u8 Command;
95 	__u8 Subcommand;
96 	__u16 Messagenumber;
97 
98 	/* Parameter */
99 	union {
100 		__u32 adrController;
101 		__u32 adrPLCI;
102 		__u32 adrNCCI;
103 	} adr;
104 
105 	_cmstruct AdditionalInfo;
106 	_cstruct B1configuration;
107 	__u16 B1protocol;
108 	_cstruct B2configuration;
109 	__u16 B2protocol;
110 	_cstruct B3configuration;
111 	__u16 B3protocol;
112 	_cstruct BC;
113 	_cstruct BChannelinformation;
114 	_cmstruct BProtocol;
115 	_cstruct CalledPartyNumber;
116 	_cstruct CalledPartySubaddress;
117 	_cstruct CallingPartyNumber;
118 	_cstruct CallingPartySubaddress;
119 	__u32 CIPmask;
120 	__u32 CIPmask2;
121 	__u16 CIPValue;
122 	__u32 Class;
123 	_cstruct ConnectedNumber;
124 	_cstruct ConnectedSubaddress;
125 	__u32 Data;
126 	__u16 DataHandle;
127 	__u16 DataLength;
128 	_cstruct FacilityConfirmationParameter;
129 	_cstruct Facilitydataarray;
130 	_cstruct FacilityIndicationParameter;
131 	_cstruct FacilityRequestParameter;
132 	__u16 FacilitySelector;
133 	__u16 Flags;
134 	__u32 Function;
135 	_cstruct HLC;
136 	__u16 Info;
137 	_cstruct InfoElement;
138 	__u32 InfoMask;
139 	__u16 InfoNumber;
140 	_cstruct Keypadfacility;
141 	_cstruct LLC;
142 	_cstruct ManuData;
143 	__u32 ManuID;
144 	_cstruct NCPI;
145 	__u16 Reason;
146 	__u16 Reason_B3;
147 	__u16 Reject;
148 	_cstruct Useruserdata;
149 
150 	/* intern */
151 	unsigned l, p;
152 	unsigned char *par;
153 	__u8 *m;
154 
155 	/* buffer to construct message */
156 	__u8 buf[180];
157 
158 } _cmsg;
159 
160 /*-----------------------------------------------------------------------*/
161 
162 /*
163  * Debugging / Tracing functions
164  */
165 
166 char *capi_cmd2str(__u8 cmd, __u8 subcmd);
167 
168 typedef struct {
169 	u_char	*buf;
170 	u_char	*p;
171 	size_t	size;
172 	size_t	pos;
173 } _cdebbuf;
174 
175 #define	CDEBUG_SIZE	1024
176 #define	CDEBUG_GSIZE	4096
177 
178 void cdebbuf_free(_cdebbuf *cdb);
179 int cdebug_init(void);
180 void cdebug_exit(void);
181 
182 _cdebbuf *capi_message2str(__u8 *msg);
183