1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
|
/*******************************************************
* Define constants *
* *
********************************************************/
/*-----------------------------------------------------*
* CCW command codes for CLAW protocol *
*------------------------------------------------------*/
#define CCW_CLAW_CMD_WRITE 0x01 /* write - not including link */
#define CCW_CLAW_CMD_READ 0x02 /* read */
#define CCW_CLAW_CMD_NOP 0x03 /* NOP */
#define CCW_CLAW_CMD_SENSE 0x04 /* Sense */
#define CCW_CLAW_CMD_SIGNAL_SMOD 0x05 /* Signal Status Modifier */
#define CCW_CLAW_CMD_TIC 0x08 /* TIC */
#define CCW_CLAW_CMD_READHEADER 0x12 /* read header data */
#define CCW_CLAW_CMD_READFF 0x22 /* read an FF */
#define CCW_CLAW_CMD_SENSEID 0xe4 /* Sense ID */
/*-----------------------------------------------------*
* CLAW Unique constants *
*------------------------------------------------------*/
#define MORE_to_COME_FLAG 0x04 /* OR with write CCW in case of m-t-c */
#define CLAW_IDLE 0x00 /* flag to indicate CLAW is idle */
#define CLAW_BUSY 0xff /* flag to indicate CLAW is busy */
#define CLAW_PENDING 0x00 /* flag to indicate i/o is pending */
#define CLAW_COMPLETE 0xff /* flag to indicate i/o completed */
/*-----------------------------------------------------*
* CLAW control command code *
*------------------------------------------------------*/
#define SYSTEM_VALIDATE_REQUEST 0x01 /* System Validate request */
#define SYSTEM_VALIDATE_RESPONSE 0x02 /* System Validate response */
#define CONNECTION_REQUEST 0x21 /* Connection request */
#define CONNECTION_RESPONSE 0x22 /* Connection response */
#define CONNECTION_CONFIRM 0x23 /* Connection confirm */
#define DISCONNECT 0x24 /* Disconnect */
#define CLAW_ERROR 0x41 /* CLAW error message */
#define CLAW_VERSION_ID 2 /* CLAW version ID */
/*-----------------------------------------------------*
* CLAW adater sense bytes *
*------------------------------------------------------*/
#define CLAW_ADAPTER_SENSE_BYTE 0x41 /* Stop command issued to adapter */
/*-----------------------------------------------------*
* CLAW control command return codes *
*------------------------------------------------------*/
#define CLAW_RC_NAME_MISMATCH 166 /* names do not match */
#define CLAW_RC_WRONG_VERSION 167 /* wrong CLAW version number */
#define CLAW_RC_HOST_RCV_TOO_SMALL 180 /* Host maximum receive is */
/* less than Linux on zSeries*/
/* transmit size */
/*-----------------------------------------------------*
* CLAW Constants application name *
*------------------------------------------------------*/
#define HOST_APPL_NAME "TCPIP "
#define WS_APPL_NAME_IP_LINK "TCPIP "
#define WS_APPL_NAME_IP_NAME "IP "
#define WS_APPL_NAME_API_LINK "API "
#define WS_APPL_NAME_PACKED "PACKED "
#define WS_NAME_NOT_DEF "NOT_DEF "
#define PACKING_ASK 1
#define PACK_SEND 2
#define DO_PACKED 3
#define MAX_ENVELOPE_SIZE 65536
#define CLAW_DEFAULT_MTU_SIZE 4096
#define DEF_PACK_BUFSIZE 32768
#define READ_CHANNEL 0
#define WRITE_CHANNEL 1
#define TB_TX 0 /* sk buffer handling in process */
#define TB_STOP 1 /* network device stop in process */
#define TB_RETRY 2 /* retry in process */
#define TB_NOBUFFER 3 /* no buffer on free queue */
#define CLAW_MAX_LINK_ID 1
#define CLAW_MAX_DEV 256 /* max claw devices */
#define MAX_NAME_LEN 8 /* host name, adapter name length */
#define CLAW_FRAME_SIZE 4096
#define CLAW_ID_SIZE 20+3
/* state machine codes used in claw_irq_handler */
#define CLAW_STOP 0
#define CLAW_START_HALT_IO 1
#define CLAW_START_SENSEID 2
#define CLAW_START_READ 3
#define CLAW_START_WRITE 4
/*-----------------------------------------------------*
* Lock flag *
*------------------------------------------------------*/
#define LOCK_YES 0
#define LOCK_NO 1
/*-----------------------------------------------------*
* DBF Debug macros *
*------------------------------------------------------*/
#define CLAW_DBF_TEXT(level, name, text) \
do { \
debug_text_event(claw_dbf_##name, level, text); \
} while (0)
#define CLAW_DBF_HEX(level,name,addr,len) \
do { \
debug_event(claw_dbf_##name,level,(void*)(addr),len); \
} while (0)
#define CLAW_DBF_TEXT_(level,name,text...) \
do { \
if (debug_level_enabled(claw_dbf_##name, level)) { \
sprintf(debug_buffer, text); \
debug_text_event(claw_dbf_##name, level, \
debug_buffer); \
} \
} while (0)
/**
* Enum for classifying detected devices.
*/
enum claw_channel_types {
/* Device is not a channel */
claw_channel_type_none,
/* Device is a CLAW channel device */
claw_channel_type_claw
};
/*******************************************************
* Define Control Blocks *
* *
********************************************************/
/*------------------------------------------------------*/
/* CLAW header */
/*------------------------------------------------------*/
struct clawh {
__u16 length; /* length of data read by preceding read CCW */
__u8 opcode; /* equivalent read CCW */
__u8 flag; /* flag of FF to indicate read was completed */
};
/*------------------------------------------------------*/
/* CLAW Packing header 4 bytes */
/*------------------------------------------------------*/
struct clawph {
__u16 len; /* Length of Packed Data Area */
__u8 flag; /* Reserved not used */
__u8 link_num; /* Link ID */
};
/*------------------------------------------------------*/
/* CLAW Ending struct ccwbk */
/*------------------------------------------------------*/
struct endccw {
__u32 real; /* real address of this block */
__u8 write1; /* write 1 is active */
__u8 read1; /* read 1 is active */
__u16 reserved; /* reserved for future use */
struct ccw1 write1_nop1;
struct ccw1 write1_nop2;
struct ccw1 write2_nop1;
struct ccw1 write2_nop2;
struct ccw1 read1_nop1;
struct ccw1 read1_nop2;
struct ccw1 read2_nop1;
struct ccw1 read2_nop2;
};
/*------------------------------------------------------*/
/* CLAW struct ccwbk */
/*------------------------------------------------------*/
struct ccwbk {
void *next; /* pointer to next ccw block */
__u32 real; /* real address of this ccw */
void *p_buffer; /* virtual address of data */
struct clawh header; /* claw header */
struct ccw1 write; /* write CCW */
struct ccw1 w_read_FF; /* read FF */
struct ccw1 w_TIC_1; /* TIC */
struct ccw1 read; /* read CCW */
struct ccw1 read_h; /* read header */
struct ccw1 signal; /* signal SMOD */
struct ccw1 r_TIC_1; /* TIC1 */
struct ccw1 r_read_FF; /* read FF */
struct ccw1 r_TIC_2; /* TIC2 */
};
/*------------------------------------------------------*/
/* CLAW control block */
/*------------------------------------------------------*/
struct clawctl {
__u8 command; /* control command */
__u8 version; /* CLAW protocol version */
__u8 linkid; /* link ID */
__u8 correlator; /* correlator */
__u8 rc; /* return code */
__u8 reserved1; /* reserved */
__u8 reserved2; /* reserved */
__u8 reserved3; /* reserved */
__u8 data[24]; /* command specific fields */
};
/*------------------------------------------------------*/
/* Data for SYSTEMVALIDATE command */
/*------------------------------------------------------*/
struct sysval {
char WS_name[8]; /* Workstation System name */
char host_name[8]; /* Host system name */
__u16 read_frame_size; /* read frame size */
__u16 write_frame_size; /* write frame size */
__u8 reserved[4]; /* reserved */
};
/*------------------------------------------------------*/
/* Data for Connect command */
/*------------------------------------------------------*/
struct conncmd {
char WS_name[8]; /* Workstation application name */
char host_name[8]; /* Host application name */
__u16 reserved1[2]; /* read frame size */
__u8 reserved2[4]; /* reserved */
};
/*------------------------------------------------------*/
/* Data for CLAW error */
/*------------------------------------------------------*/
struct clawwerror {
char reserved1[8]; /* reserved */
char reserved2[8]; /* reserved */
char reserved3[8]; /* reserved */
};
/*------------------------------------------------------*/
/* Data buffer for CLAW */
/*------------------------------------------------------*/
struct clawbuf {
char buffer[MAX_ENVELOPE_SIZE]; /* data buffer */
};
/*------------------------------------------------------*/
/* Channel control block for read and write channel */
/*------------------------------------------------------*/
struct chbk {
unsigned int devno;
int irq;
char id[CLAW_ID_SIZE];
__u32 IO_active;
__u8 claw_state;
struct irb *irb;
struct ccw_device *cdev; /* pointer to the channel device */
struct net_device *ndev;
wait_queue_head_t wait;
struct tasklet_struct tasklet;
struct timer_list timer;
unsigned long flag_a; /* atomic flags */
#define CLAW_BH_ACTIVE 0
unsigned long flag_b; /* atomic flags */
#define CLAW_WRITE_ACTIVE 0
__u8 last_dstat;
__u8 flag;
struct sk_buff_head collect_queue;
spinlock_t collect_lock;
#define CLAW_WRITE 0x02 /* - Set if this is a write channel */
#define CLAW_READ 0x01 /* - Set if this is a read channel */
#define CLAW_TIMER 0x80 /* - Set if timer made the wake_up */
};
/*--------------------------------------------------------------*
* CLAW environment block *
*---------------------------------------------------------------*/
struct claw_env {
unsigned int devno[2]; /* device number */
char host_name[9]; /* Host name */
char adapter_name [9]; /* adapter name */
char api_type[9]; /* TCPIP, API or PACKED */
void *p_priv; /* privptr */
__u16 read_buffers; /* read buffer number */
__u16 write_buffers; /* write buffer number */
__u16 read_size; /* read buffer size */
__u16 write_size; /* write buffer size */
__u16 dev_id; /* device ident */
__u8 packing; /* are we packing? */
__u8 in_use; /* device active flag */
struct net_device *ndev; /* backward ptr to the net dev*/
};
/*--------------------------------------------------------------*
* CLAW main control block *
*---------------------------------------------------------------*/
struct claw_privbk {
void *p_buff_ccw;
__u32 p_buff_ccw_num;
void *p_buff_read;
__u32 p_buff_read_num;
__u32 p_buff_pages_perread;
void *p_buff_write;
__u32 p_buff_write_num;
__u32 p_buff_pages_perwrite;
long active_link_ID; /* Active logical link ID */
struct ccwbk *p_write_free_chain; /* pointer to free ccw chain */
struct ccwbk *p_write_active_first; /* ptr to the first write ccw */
struct ccwbk *p_write_active_last; /* ptr to the last write ccw */
struct ccwbk *p_read_active_first; /* ptr to the first read ccw */
struct ccwbk *p_read_active_last; /* ptr to the last read ccw */
struct endccw *p_end_ccw; /*ptr to ending ccw */
struct ccwbk *p_claw_signal_blk; /* ptr to signal block */
__u32 write_free_count; /* number of free bufs for write */
struct net_device_stats stats; /* device status */
struct chbk channel[2]; /* Channel control blocks */
__u8 mtc_skipping;
int mtc_offset;
int mtc_logical_link;
void *p_mtc_envelope;
struct sk_buff *pk_skb; /* packing buffer */
int pk_cnt;
struct clawctl ctl_bk;
struct claw_env *p_env;
__u8 system_validate_comp;
__u8 release_pend;
__u8 checksum_received_ip_pkts;
__u8 buffs_alloc;
struct endccw end_ccw;
unsigned long tbusy;
};
/************************************************************/
/* define global constants */
/************************************************************/
#define CCWBK_SIZE sizeof(struct ccwbk)
|
