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Merge git://git.infradead.org/mtd-2.6
[linux-2.6-block.git] / drivers / s390 / net / claw.h
CommitLineData
1da177e4
LT		 1/*******************************************************
2* Define constants *
3* *
4********************************************************/
e018ba1f 5
1da177e4
LT		 6/*-----------------------------------------------------*
7* CCW command codes for CLAW protocol *
8*------------------------------------------------------*/
9
10#define CCW_CLAW_CMD_WRITE 0x01 /* write - not including link */
11#define CCW_CLAW_CMD_READ 0x02 /* read */
12#define CCW_CLAW_CMD_NOP 0x03 /* NOP */
13#define CCW_CLAW_CMD_SENSE 0x04 /* Sense */
14#define CCW_CLAW_CMD_SIGNAL_SMOD 0x05 /* Signal Status Modifier */
15#define CCW_CLAW_CMD_TIC 0x08 /* TIC */
16#define CCW_CLAW_CMD_READHEADER 0x12 /* read header data */
17#define CCW_CLAW_CMD_READFF 0x22 /* read an FF */
18#define CCW_CLAW_CMD_SENSEID 0xe4 /* Sense ID */
19
20
21/*-----------------------------------------------------*
22* CLAW Unique constants *
23*------------------------------------------------------*/
24
25#define MORE_to_COME_FLAG 0x04 /* OR with write CCW in case of m-t-c */
26#define CLAW_IDLE 0x00 /* flag to indicate CLAW is idle */
27#define CLAW_BUSY 0xff /* flag to indicate CLAW is busy */
28#define CLAW_PENDING 0x00 /* flag to indicate i/o is pending */
29#define CLAW_COMPLETE 0xff /* flag to indicate i/o completed */
30
31/*-----------------------------------------------------*
0779bf2d 32* CLAW control command code *
1da177e4
LT		 33*------------------------------------------------------*/
34
35#define SYSTEM_VALIDATE_REQUEST 0x01 /* System Validate request */
36#define SYSTEM_VALIDATE_RESPONSE 0x02 /* System Validate response */
37#define CONNECTION_REQUEST 0x21 /* Connection request */
38#define CONNECTION_RESPONSE 0x22 /* Connection response */
39#define CONNECTION_CONFIRM 0x23 /* Connection confirm */
40#define DISCONNECT 0x24 /* Disconnect */
41#define CLAW_ERROR 0x41 /* CLAW error message */
42#define CLAW_VERSION_ID 2 /* CLAW version ID */
43
44/*-----------------------------------------------------*
45* CLAW adater sense bytes *
46*------------------------------------------------------*/
47
48#define CLAW_ADAPTER_SENSE_BYTE 0x41 /* Stop command issued to adapter */
49
50/*-----------------------------------------------------*
51* CLAW control command return codes *
52*------------------------------------------------------*/
53
54#define CLAW_RC_NAME_MISMATCH 166 /* names do not match */
55#define CLAW_RC_WRONG_VERSION 167 /* wrong CLAW version number */
56#define CLAW_RC_HOST_RCV_TOO_SMALL 180 /* Host maximum receive is */
57 /* less than Linux on zSeries*/
58 /* transmit size */
59
60/*-----------------------------------------------------*
61* CLAW Constants application name *
62*------------------------------------------------------*/
63
64#define HOST_APPL_NAME "TCPIP "
65#define WS_APPL_NAME_IP_LINK "TCPIP "
66#define WS_APPL_NAME_IP_NAME "IP "
67#define WS_APPL_NAME_API_LINK "API "
68#define WS_APPL_NAME_PACKED "PACKED "
69#define WS_NAME_NOT_DEF "NOT_DEF "
70#define PACKING_ASK 1
71#define PACK_SEND 2
72#define DO_PACKED 3
73
74#define MAX_ENVELOPE_SIZE 65536
75#define CLAW_DEFAULT_MTU_SIZE 4096
76#define DEF_PACK_BUFSIZE 32768
77#define READ 0
78#define WRITE 1
79
80#define TB_TX 0 /* sk buffer handling in process */
81#define TB_STOP 1 /* network device stop in process */
82#define TB_RETRY 2 /* retry in process */
83#define TB_NOBUFFER 3 /* no buffer on free queue */
84#define CLAW_MAX_LINK_ID 1
85#define CLAW_MAX_DEV 256 /* max claw devices */
86#define MAX_NAME_LEN 8 /* host name, adapter name length */
87#define CLAW_FRAME_SIZE 4096
2a0217d5 88#define CLAW_ID_SIZE 20+3
1da177e4
LT		 89
90/* state machine codes used in claw_irq_handler */
91
92#define CLAW_STOP 0
93#define CLAW_START_HALT_IO 1
94#define CLAW_START_SENSEID 2
95#define CLAW_START_READ 3
96#define CLAW_START_WRITE 4
97
98/*-----------------------------------------------------*
99* Lock flag *
100*------------------------------------------------------*/
101#define LOCK_YES 0
102#define LOCK_NO 1
103
104/*-----------------------------------------------------*
105* DBF Debug macros *
106*------------------------------------------------------*/
107#define CLAW_DBF_TEXT(level, name, text) \
108 do { \
109 debug_text_event(claw_dbf_##name, level, text); \
110 } while (0)
111
112#define CLAW_DBF_HEX(level,name,addr,len) \
113do { \
114 debug_event(claw_dbf_##name,level,(void*)(addr),len); \
115} while (0)
116
f33780d3
PT		 117/* Allow to sort out low debug levels early to avoid wasted sprints */
118static inline int claw_dbf_passes(debug_info_t *dbf_grp, int level)
119{
120 return (level <= dbf_grp->level);
121}
122
1da177e4 123#define CLAW_DBF_TEXT_(level,name,text...) \
f33780d3
PT		 124 do { \
125 if (claw_dbf_passes(claw_dbf_##name, level)) { \
126 sprintf(debug_buffer, text); \
127 debug_text_event(claw_dbf_##name, level, \
128 debug_buffer); \
129 } \
130 } while (0)
1da177e4
LT		 131
132/*******************************************************
133* Define Control Blocks *
134* *
135********************************************************/
136
137/*------------------------------------------------------*/
138/* CLAW header */
139/*------------------------------------------------------*/
140
141struct clawh {
142 __u16 length; /* length of data read by preceding read CCW */
143 __u8 opcode; /* equivalent read CCW */
144 __u8 flag; /* flag of FF to indicate read was completed */
145};
146
147/*------------------------------------------------------*/
148/* CLAW Packing header 4 bytes */
149/*------------------------------------------------------*/
150struct clawph {
151 __u16 len; /* Length of Packed Data Area */
152 __u8 flag; /* Reserved not used */
153 __u8 link_num; /* Link ID */
154};
155
156/*------------------------------------------------------*/
157/* CLAW Ending struct ccwbk */
158/*------------------------------------------------------*/
159struct endccw {
160 __u32 real; /* real address of this block */
161 __u8 write1; /* write 1 is active */
162 __u8 read1; /* read 1 is active */
163 __u16 reserved; /* reserved for future use */
164 struct ccw1 write1_nop1;
165 struct ccw1 write1_nop2;
166 struct ccw1 write2_nop1;
167 struct ccw1 write2_nop2;
168 struct ccw1 read1_nop1;
169 struct ccw1 read1_nop2;
170 struct ccw1 read2_nop1;
171 struct ccw1 read2_nop2;
172};
173
174/*------------------------------------------------------*/
175/* CLAW struct ccwbk */
176/*------------------------------------------------------*/
177struct ccwbk {
178 void *next; /* pointer to next ccw block */
179 __u32 real; /* real address of this ccw */
180 void *p_buffer; /* virtual address of data */
181 struct clawh header; /* claw header */
182 struct ccw1 write; /* write CCW */
183 struct ccw1 w_read_FF; /* read FF */
184 struct ccw1 w_TIC_1; /* TIC */
185 struct ccw1 read; /* read CCW */
186 struct ccw1 read_h; /* read header */
187 struct ccw1 signal; /* signal SMOD */
188 struct ccw1 r_TIC_1; /* TIC1 */
189 struct ccw1 r_read_FF; /* read FF */
190 struct ccw1 r_TIC_2; /* TIC2 */
191};
192
193/*------------------------------------------------------*/
194/* CLAW control block */
195/*------------------------------------------------------*/
196struct clawctl {
197 __u8 command; /* control command */
198 __u8 version; /* CLAW protocol version */
199 __u8 linkid; /* link ID */
200 __u8 correlator; /* correlator */
201 __u8 rc; /* return code */
202 __u8 reserved1; /* reserved */
203 __u8 reserved2; /* reserved */
204 __u8 reserved3; /* reserved */
205 __u8 data[24]; /* command specific fields */
206};
207
208/*------------------------------------------------------*/
209/* Data for SYSTEMVALIDATE command */
210/*------------------------------------------------------*/
211struct sysval {
212 char WS_name[8]; /* Workstation System name */
213 char host_name[8]; /* Host system name */
214 __u16 read_frame_size; /* read frame size */
215 __u16 write_frame_size; /* write frame size */
216 __u8 reserved[4]; /* reserved */
217};
218
219/*------------------------------------------------------*/
220/* Data for Connect command */
221/*------------------------------------------------------*/
222struct conncmd {
223 char WS_name[8]; /* Workstation application name */
224 char host_name[8]; /* Host application name */
225 __u16 reserved1[2]; /* read frame size */
226 __u8 reserved2[4]; /* reserved */
227};
228
229/*------------------------------------------------------*/
230/* Data for CLAW error */
231/*------------------------------------------------------*/
232struct clawwerror {
233 char reserved1[8]; /* reserved */
234 char reserved2[8]; /* reserved */
235 char reserved3[8]; /* reserved */
236};
237
238/*------------------------------------------------------*/
239/* Data buffer for CLAW */
240/*------------------------------------------------------*/
241struct clawbuf {
242 char buffer[MAX_ENVELOPE_SIZE]; /* data buffer */
243};
244
245/*------------------------------------------------------*/
246/* Channel control block for read and write channel */
247/*------------------------------------------------------*/
248
249struct chbk {
250 unsigned int devno;
251 int irq;
252 char id[CLAW_ID_SIZE];
253 __u32 IO_active;
254 __u8 claw_state;
255 struct irb *irb;
256 struct ccw_device *cdev; /* pointer to the channel device */
257 struct net_device *ndev;
258 wait_queue_head_t wait;
259 struct tasklet_struct tasklet;
260 struct timer_list timer;
261 unsigned long flag_a; /* atomic flags */
262#define CLAW_BH_ACTIVE 0
263 unsigned long flag_b; /* atomic flags */
264#define CLAW_WRITE_ACTIVE 0
265 __u8 last_dstat;
266 __u8 flag;
267 struct sk_buff_head collect_queue;
268 spinlock_t collect_lock;
269#define CLAW_WRITE 0x02 /* - Set if this is a write channel */
270#define CLAW_READ 0x01 /* - Set if this is a read channel */
271#define CLAW_TIMER 0x80 /* - Set if timer made the wake_up */
272};
273
274/*--------------------------------------------------------------*
275* CLAW environment block *
276*---------------------------------------------------------------*/
277
278struct claw_env {
279 unsigned int devno[2]; /* device number */
280 char host_name[9]; /* Host name */
281 char adapter_name [9]; /* adapter name */
282 char api_type[9]; /* TCPIP, API or PACKED */
283 void *p_priv; /* privptr */
284 __u16 read_buffers; /* read buffer number */
285 __u16 write_buffers; /* write buffer number */
286 __u16 read_size; /* read buffer size */
287 __u16 write_size; /* write buffer size */
288 __u16 dev_id; /* device ident */
289 __u8 packing; /* are we packing? */
1da177e4
LT		 290 __u8 in_use; /* device active flag */
291 struct net_device *ndev; /* backward ptr to the net dev*/
292};
293
294/*--------------------------------------------------------------*
295* CLAW main control block *
296*---------------------------------------------------------------*/
297
298struct claw_privbk {
299 void *p_buff_ccw;
300 __u32 p_buff_ccw_num;
301 void *p_buff_read;
302 __u32 p_buff_read_num;
303 __u32 p_buff_pages_perread;
304 void *p_buff_write;
305 __u32 p_buff_write_num;
306 __u32 p_buff_pages_perwrite;
307 long active_link_ID; /* Active logical link ID */
308 struct ccwbk *p_write_free_chain; /* pointer to free ccw chain */
309 struct ccwbk *p_write_active_first; /* ptr to the first write ccw */
310 struct ccwbk *p_write_active_last; /* ptr to the last write ccw */
311 struct ccwbk *p_read_active_first; /* ptr to the first read ccw */
312 struct ccwbk *p_read_active_last; /* ptr to the last read ccw */
313 struct endccw *p_end_ccw; /*ptr to ending ccw */
314 struct ccwbk *p_claw_signal_blk; /* ptr to signal block */
315 __u32 write_free_count; /* number of free bufs for write */
316 struct net_device_stats stats; /* device status */
317 struct chbk channel[2]; /* Channel control blocks */
318 __u8 mtc_skipping;
319 int mtc_offset;
320 int mtc_logical_link;
321 void *p_mtc_envelope;
322 struct sk_buff *pk_skb; /* packing buffer */
323 int pk_cnt;
324 struct clawctl ctl_bk;
325 struct claw_env *p_env;
326 __u8 system_validate_comp;
327 __u8 release_pend;
328 __u8 checksum_received_ip_pkts;
329 __u8 buffs_alloc;
330 struct endccw end_ccw;
331 unsigned long tbusy;
332
333};
334
335
336/************************************************************/
337/* define global constants */
338/************************************************************/
339
340#define CCWBK_SIZE sizeof(struct ccwbk)
341
342
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