Commit | Line | Data |
---|---|---|
1da177e4 LT |
1 | /* |
2 | * drivers/s390/net/claw.c | |
3 | * ESCON CLAW network driver | |
4 | * | |
8e84c801 | 5 | * Linux for zSeries version |
1da177e4 LT |
6 | * Copyright (C) 2002,2005 IBM Corporation |
7 | * Author(s) Original code written by: | |
8 | * Kazuo Iimura (iimura@jp.ibm.com) | |
9 | * Rewritten by | |
10 | * Andy Richter (richtera@us.ibm.com) | |
11 | * Marc Price (mwprice@us.ibm.com) | |
12 | * | |
13 | * sysfs parms: | |
14 | * group x.x.rrrr,x.x.wwww | |
15 | * read_buffer nnnnnnn | |
16 | * write_buffer nnnnnn | |
17 | * host_name aaaaaaaa | |
18 | * adapter_name aaaaaaaa | |
19 | * api_type aaaaaaaa | |
20 | * | |
21 | * eg. | |
22 | * group 0.0.0200 0.0.0201 | |
23 | * read_buffer 25 | |
24 | * write_buffer 20 | |
25 | * host_name LINUX390 | |
26 | * adapter_name RS6K | |
27 | * api_type TCPIP | |
28 | * | |
29 | * where | |
30 | * | |
31 | * The device id is decided by the order entries | |
32 | * are added to the group the first is claw0 the second claw1 | |
33 | * up to CLAW_MAX_DEV | |
34 | * | |
35 | * rrrr - the first of 2 consecutive device addresses used for the | |
36 | * CLAW protocol. | |
37 | * The specified address is always used as the input (Read) | |
38 | * channel and the next address is used as the output channel. | |
39 | * | |
40 | * wwww - the second of 2 consecutive device addresses used for | |
41 | * the CLAW protocol. | |
42 | * The specified address is always used as the output | |
43 | * channel and the previous address is used as the input channel. | |
44 | * | |
45 | * read_buffer - specifies number of input buffers to allocate. | |
46 | * write_buffer - specifies number of output buffers to allocate. | |
47 | * host_name - host name | |
48 | * adaptor_name - adaptor name | |
49 | * api_type - API type TCPIP or API will be sent and expected | |
50 | * as ws_name | |
51 | * | |
52 | * Note the following requirements: | |
53 | * 1) host_name must match the configured adapter_name on the remote side | |
54 | * 2) adaptor_name must match the configured host name on the remote side | |
55 | * | |
56 | * Change History | |
57 | * 1.00 Initial release shipped | |
58 | * 1.10 Changes for Buffer allocation | |
59 | * 1.15 Changed for 2.6 Kernel No longer compiles on 2.4 or lower | |
60 | * 1.25 Added Packing support | |
61 | */ | |
1da177e4 LT |
62 | #include <asm/ccwdev.h> |
63 | #include <asm/ccwgroup.h> | |
64 | #include <asm/debug.h> | |
65 | #include <asm/idals.h> | |
66 | #include <asm/io.h> | |
67 | ||
1977f032 | 68 | #include <linux/bitops.h> |
1da177e4 LT |
69 | #include <linux/ctype.h> |
70 | #include <linux/delay.h> | |
71 | #include <linux/errno.h> | |
72 | #include <linux/if_arp.h> | |
73 | #include <linux/init.h> | |
74 | #include <linux/interrupt.h> | |
75 | #include <linux/ip.h> | |
76 | #include <linux/kernel.h> | |
77 | #include <linux/module.h> | |
78 | #include <linux/netdevice.h> | |
79 | #include <linux/etherdevice.h> | |
80 | #include <linux/proc_fs.h> | |
81 | #include <linux/sched.h> | |
82 | #include <linux/signal.h> | |
83 | #include <linux/skbuff.h> | |
84 | #include <linux/slab.h> | |
85 | #include <linux/string.h> | |
86 | #include <linux/tcp.h> | |
87 | #include <linux/timer.h> | |
88 | #include <linux/types.h> | |
1da177e4 LT |
89 | |
90 | #include "cu3088.h" | |
91 | #include "claw.h" | |
92 | ||
93 | MODULE_AUTHOR("Andy Richter <richtera@us.ibm.com>"); | |
94 | MODULE_DESCRIPTION("Linux for zSeries CLAW Driver\n" \ | |
95 | "Copyright 2000,2005 IBM Corporation\n"); | |
96 | MODULE_LICENSE("GPL"); | |
97 | ||
98 | /* Debugging is based on DEBUGMSG, IOTRACE, or FUNCTRACE options: | |
99 | DEBUGMSG - Enables output of various debug messages in the code | |
100 | IOTRACE - Enables output of CCW and other IO related traces | |
101 | FUNCTRACE - Enables output of function entry/exit trace | |
102 | Define any combination of above options to enable tracing | |
103 | ||
104 | CLAW also uses the s390dbf file system see claw_trace and claw_setup | |
105 | */ | |
106 | ||
107 | /* following enables tracing */ | |
108 | //#define DEBUGMSG | |
109 | //#define IOTRACE | |
110 | //#define FUNCTRACE | |
111 | ||
112 | #ifdef DEBUGMSG | |
113 | #define DEBUG | |
114 | #endif | |
115 | ||
116 | #ifdef IOTRACE | |
117 | #define DEBUG | |
118 | #endif | |
119 | ||
120 | #ifdef FUNCTRACE | |
121 | #define DEBUG | |
122 | #endif | |
123 | ||
2b67fc46 | 124 | static char debug_buffer[255]; |
1da177e4 LT |
125 | /** |
126 | * Debug Facility Stuff | |
127 | */ | |
128 | static debug_info_t *claw_dbf_setup; | |
129 | static debug_info_t *claw_dbf_trace; | |
130 | ||
131 | /** | |
132 | * CLAW Debug Facility functions | |
133 | */ | |
134 | static void | |
135 | claw_unregister_debug_facility(void) | |
136 | { | |
137 | if (claw_dbf_setup) | |
138 | debug_unregister(claw_dbf_setup); | |
139 | if (claw_dbf_trace) | |
140 | debug_unregister(claw_dbf_trace); | |
141 | } | |
142 | ||
143 | static int | |
144 | claw_register_debug_facility(void) | |
145 | { | |
66a464db MH |
146 | claw_dbf_setup = debug_register("claw_setup", 2, 1, 8); |
147 | claw_dbf_trace = debug_register("claw_trace", 2, 2, 8); | |
1da177e4 LT |
148 | if (claw_dbf_setup == NULL || claw_dbf_trace == NULL) { |
149 | printk(KERN_WARNING "Not enough memory for debug facility.\n"); | |
150 | claw_unregister_debug_facility(); | |
151 | return -ENOMEM; | |
152 | } | |
153 | debug_register_view(claw_dbf_setup, &debug_hex_ascii_view); | |
154 | debug_set_level(claw_dbf_setup, 2); | |
155 | debug_register_view(claw_dbf_trace, &debug_hex_ascii_view); | |
156 | debug_set_level(claw_dbf_trace, 2); | |
157 | return 0; | |
158 | } | |
159 | ||
160 | static inline void | |
161 | claw_set_busy(struct net_device *dev) | |
162 | { | |
163 | ((struct claw_privbk *) dev->priv)->tbusy=1; | |
164 | eieio(); | |
165 | } | |
166 | ||
167 | static inline void | |
168 | claw_clear_busy(struct net_device *dev) | |
169 | { | |
170 | clear_bit(0, &(((struct claw_privbk *) dev->priv)->tbusy)); | |
171 | netif_wake_queue(dev); | |
172 | eieio(); | |
173 | } | |
174 | ||
175 | static inline int | |
176 | claw_check_busy(struct net_device *dev) | |
177 | { | |
178 | eieio(); | |
179 | return ((struct claw_privbk *) dev->priv)->tbusy; | |
180 | } | |
181 | ||
182 | static inline void | |
183 | claw_setbit_busy(int nr,struct net_device *dev) | |
184 | { | |
185 | netif_stop_queue(dev); | |
186 | set_bit(nr, (void *)&(((struct claw_privbk *)dev->priv)->tbusy)); | |
187 | } | |
188 | ||
189 | static inline void | |
190 | claw_clearbit_busy(int nr,struct net_device *dev) | |
191 | { | |
192 | clear_bit(nr,(void *)&(((struct claw_privbk *)dev->priv)->tbusy)); | |
193 | netif_wake_queue(dev); | |
194 | } | |
195 | ||
196 | static inline int | |
197 | claw_test_and_setbit_busy(int nr,struct net_device *dev) | |
198 | { | |
199 | netif_stop_queue(dev); | |
200 | return test_and_set_bit(nr, | |
201 | (void *)&(((struct claw_privbk *) dev->priv)->tbusy)); | |
202 | } | |
203 | ||
204 | ||
205 | /* Functions for the DEV methods */ | |
206 | ||
207 | static int claw_probe(struct ccwgroup_device *cgdev); | |
208 | static void claw_remove_device(struct ccwgroup_device *cgdev); | |
209 | static void claw_purge_skb_queue(struct sk_buff_head *q); | |
210 | static int claw_new_device(struct ccwgroup_device *cgdev); | |
211 | static int claw_shutdown_device(struct ccwgroup_device *cgdev); | |
212 | static int claw_tx(struct sk_buff *skb, struct net_device *dev); | |
213 | static int claw_change_mtu( struct net_device *dev, int new_mtu); | |
214 | static int claw_open(struct net_device *dev); | |
215 | static void claw_irq_handler(struct ccw_device *cdev, | |
216 | unsigned long intparm, struct irb *irb); | |
217 | static void claw_irq_tasklet ( unsigned long data ); | |
218 | static int claw_release(struct net_device *dev); | |
219 | static void claw_write_retry ( struct chbk * p_ch ); | |
220 | static void claw_write_next ( struct chbk * p_ch ); | |
221 | static void claw_timer ( struct chbk * p_ch ); | |
222 | ||
223 | /* Functions */ | |
224 | static int add_claw_reads(struct net_device *dev, | |
225 | struct ccwbk* p_first, struct ccwbk* p_last); | |
4d284cac HC |
226 | static void ccw_check_return_code (struct ccw_device *cdev, int return_code); |
227 | static void ccw_check_unit_check (struct chbk * p_ch, unsigned char sense ); | |
1da177e4 LT |
228 | static int find_link(struct net_device *dev, char *host_name, char *ws_name ); |
229 | static int claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid); | |
230 | static int init_ccw_bk(struct net_device *dev); | |
231 | static void probe_error( struct ccwgroup_device *cgdev); | |
232 | static struct net_device_stats *claw_stats(struct net_device *dev); | |
4d284cac | 233 | static int pages_to_order_of_mag(int num_of_pages); |
1da177e4 LT |
234 | static struct sk_buff *claw_pack_skb(struct claw_privbk *privptr); |
235 | #ifdef DEBUG | |
236 | static void dumpit (char *buf, int len); | |
237 | #endif | |
238 | /* sysfs Functions */ | |
3fd3c0a5 YI |
239 | static ssize_t claw_hname_show(struct device *dev, struct device_attribute *attr, char *buf); |
240 | static ssize_t claw_hname_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 | 241 | const char *buf, size_t count); |
3fd3c0a5 YI |
242 | static ssize_t claw_adname_show(struct device *dev, struct device_attribute *attr, char *buf); |
243 | static ssize_t claw_adname_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 | 244 | const char *buf, size_t count); |
3fd3c0a5 YI |
245 | static ssize_t claw_apname_show(struct device *dev, struct device_attribute *attr, char *buf); |
246 | static ssize_t claw_apname_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 | 247 | const char *buf, size_t count); |
3fd3c0a5 YI |
248 | static ssize_t claw_wbuff_show(struct device *dev, struct device_attribute *attr, char *buf); |
249 | static ssize_t claw_wbuff_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 | 250 | const char *buf, size_t count); |
3fd3c0a5 YI |
251 | static ssize_t claw_rbuff_show(struct device *dev, struct device_attribute *attr, char *buf); |
252 | static ssize_t claw_rbuff_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 LT |
253 | const char *buf, size_t count); |
254 | static int claw_add_files(struct device *dev); | |
255 | static void claw_remove_files(struct device *dev); | |
256 | ||
257 | /* Functions for System Validate */ | |
258 | static int claw_process_control( struct net_device *dev, struct ccwbk * p_ccw); | |
259 | static int claw_send_control(struct net_device *dev, __u8 type, __u8 link, | |
260 | __u8 correlator, __u8 rc , char *local_name, char *remote_name); | |
261 | static int claw_snd_conn_req(struct net_device *dev, __u8 link); | |
262 | static int claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl); | |
263 | static int claw_snd_sys_validate_rsp(struct net_device *dev, | |
264 | struct clawctl * p_ctl, __u32 return_code); | |
265 | static int claw_strt_conn_req(struct net_device *dev ); | |
266 | static void claw_strt_read ( struct net_device *dev, int lock ); | |
267 | static void claw_strt_out_IO( struct net_device *dev ); | |
268 | static void claw_free_wrt_buf( struct net_device *dev ); | |
269 | ||
270 | /* Functions for unpack reads */ | |
271 | static void unpack_read (struct net_device *dev ); | |
272 | ||
273 | /* ccwgroup table */ | |
274 | ||
275 | static struct ccwgroup_driver claw_group_driver = { | |
276 | .owner = THIS_MODULE, | |
277 | .name = "claw", | |
278 | .max_slaves = 2, | |
279 | .driver_id = 0xC3D3C1E6, | |
280 | .probe = claw_probe, | |
281 | .remove = claw_remove_device, | |
282 | .set_online = claw_new_device, | |
283 | .set_offline = claw_shutdown_device, | |
284 | }; | |
285 | ||
286 | /* | |
287 | * | |
288 | * Key functions | |
289 | */ | |
290 | ||
291 | /*----------------------------------------------------------------* | |
292 | * claw_probe * | |
293 | * this function is called for each CLAW device. * | |
294 | *----------------------------------------------------------------*/ | |
295 | static int | |
296 | claw_probe(struct ccwgroup_device *cgdev) | |
297 | { | |
298 | int rc; | |
299 | struct claw_privbk *privptr=NULL; | |
300 | ||
301 | #ifdef FUNCTRACE | |
302 | printk(KERN_INFO "%s Enter\n",__FUNCTION__); | |
303 | #endif | |
304 | CLAW_DBF_TEXT(2,setup,"probe"); | |
305 | if (!get_device(&cgdev->dev)) | |
306 | return -ENODEV; | |
307 | #ifdef DEBUGMSG | |
308 | printk(KERN_INFO "claw: variable cgdev =\n"); | |
309 | dumpit((char *)cgdev, sizeof(struct ccwgroup_device)); | |
310 | #endif | |
88abaab4 | 311 | privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL); |
1da177e4 LT |
312 | if (privptr == NULL) { |
313 | probe_error(cgdev); | |
314 | put_device(&cgdev->dev); | |
315 | printk(KERN_WARNING "Out of memory %s %s Exit Line %d \n", | |
316 | cgdev->cdev[0]->dev.bus_id,__FUNCTION__,__LINE__); | |
317 | CLAW_DBF_TEXT_(2,setup,"probex%d",-ENOMEM); | |
318 | return -ENOMEM; | |
319 | } | |
dd00cc48 YP |
320 | privptr->p_mtc_envelope= kzalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL); |
321 | privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL); | |
1da177e4 LT |
322 | if ((privptr->p_mtc_envelope==NULL) || (privptr->p_env==NULL)) { |
323 | probe_error(cgdev); | |
324 | put_device(&cgdev->dev); | |
325 | printk(KERN_WARNING "Out of memory %s %s Exit Line %d \n", | |
326 | cgdev->cdev[0]->dev.bus_id,__FUNCTION__,__LINE__); | |
327 | CLAW_DBF_TEXT_(2,setup,"probex%d",-ENOMEM); | |
328 | return -ENOMEM; | |
329 | } | |
1da177e4 LT |
330 | memcpy(privptr->p_env->adapter_name,WS_NAME_NOT_DEF,8); |
331 | memcpy(privptr->p_env->host_name,WS_NAME_NOT_DEF,8); | |
332 | memcpy(privptr->p_env->api_type,WS_NAME_NOT_DEF,8); | |
333 | privptr->p_env->packing = 0; | |
334 | privptr->p_env->write_buffers = 5; | |
335 | privptr->p_env->read_buffers = 5; | |
336 | privptr->p_env->read_size = CLAW_FRAME_SIZE; | |
337 | privptr->p_env->write_size = CLAW_FRAME_SIZE; | |
338 | rc = claw_add_files(&cgdev->dev); | |
339 | if (rc) { | |
340 | probe_error(cgdev); | |
341 | put_device(&cgdev->dev); | |
342 | printk(KERN_WARNING "add_files failed %s %s Exit Line %d \n", | |
343 | cgdev->cdev[0]->dev.bus_id,__FUNCTION__,__LINE__); | |
344 | CLAW_DBF_TEXT_(2,setup,"probex%d",rc); | |
345 | return rc; | |
346 | } | |
347 | printk(KERN_INFO "claw: sysfs files added for %s\n",cgdev->cdev[0]->dev.bus_id); | |
348 | privptr->p_env->p_priv = privptr; | |
349 | cgdev->cdev[0]->handler = claw_irq_handler; | |
350 | cgdev->cdev[1]->handler = claw_irq_handler; | |
351 | cgdev->dev.driver_data = privptr; | |
352 | #ifdef FUNCTRACE | |
353 | printk(KERN_INFO "claw:%s exit on line %d, " | |
354 | "rc = 0\n",__FUNCTION__,__LINE__); | |
355 | #endif | |
356 | CLAW_DBF_TEXT(2,setup,"prbext 0"); | |
357 | ||
358 | return 0; | |
359 | } /* end of claw_probe */ | |
360 | ||
361 | /*-------------------------------------------------------------------* | |
362 | * claw_tx * | |
363 | *-------------------------------------------------------------------*/ | |
364 | ||
365 | static int | |
366 | claw_tx(struct sk_buff *skb, struct net_device *dev) | |
367 | { | |
368 | int rc; | |
369 | struct claw_privbk *privptr=dev->priv; | |
370 | unsigned long saveflags; | |
371 | struct chbk *p_ch; | |
372 | ||
373 | #ifdef FUNCTRACE | |
374 | printk(KERN_INFO "%s:%s enter\n",dev->name,__FUNCTION__); | |
375 | #endif | |
376 | CLAW_DBF_TEXT(4,trace,"claw_tx"); | |
377 | p_ch=&privptr->channel[WRITE]; | |
378 | if (skb == NULL) { | |
379 | printk(KERN_WARNING "%s: null pointer passed as sk_buffer\n", | |
380 | dev->name); | |
381 | privptr->stats.tx_dropped++; | |
382 | #ifdef FUNCTRACE | |
383 | printk(KERN_INFO "%s: %s() exit on line %d, rc = EIO\n", | |
384 | dev->name,__FUNCTION__, __LINE__); | |
385 | #endif | |
386 | CLAW_DBF_TEXT_(2,trace,"clawtx%d",-EIO); | |
387 | return -EIO; | |
388 | } | |
389 | ||
390 | #ifdef IOTRACE | |
391 | printk(KERN_INFO "%s: variable sk_buff=\n",dev->name); | |
392 | dumpit((char *) skb, sizeof(struct sk_buff)); | |
393 | printk(KERN_INFO "%s: variable dev=\n",dev->name); | |
394 | dumpit((char *) dev, sizeof(struct net_device)); | |
395 | #endif | |
396 | spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags); | |
397 | rc=claw_hw_tx( skb, dev, 1 ); | |
398 | spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags); | |
399 | #ifdef FUNCTRACE | |
400 | printk(KERN_INFO "%s:%s exit on line %d, rc = %d\n", | |
401 | dev->name, __FUNCTION__, __LINE__, rc); | |
402 | #endif | |
403 | CLAW_DBF_TEXT_(4,trace,"clawtx%d",rc); | |
404 | return rc; | |
405 | } /* end of claw_tx */ | |
406 | ||
407 | /*------------------------------------------------------------------* | |
408 | * pack the collect queue into an skb and return it * | |
409 | * If not packing just return the top skb from the queue * | |
410 | *------------------------------------------------------------------*/ | |
411 | ||
412 | static struct sk_buff * | |
413 | claw_pack_skb(struct claw_privbk *privptr) | |
414 | { | |
415 | struct sk_buff *new_skb,*held_skb; | |
416 | struct chbk *p_ch = &privptr->channel[WRITE]; | |
417 | struct claw_env *p_env = privptr->p_env; | |
418 | int pkt_cnt,pk_ind,so_far; | |
419 | ||
420 | new_skb = NULL; /* assume no dice */ | |
421 | pkt_cnt = 0; | |
422 | CLAW_DBF_TEXT(4,trace,"PackSKBe"); | |
b03efcfb | 423 | if (!skb_queue_empty(&p_ch->collect_queue)) { |
1da177e4 LT |
424 | /* some data */ |
425 | held_skb = skb_dequeue(&p_ch->collect_queue); | |
1da177e4 | 426 | if (held_skb) |
8e84c801 | 427 | dev_kfree_skb_any(held_skb); |
1da177e4 LT |
428 | else |
429 | return NULL; | |
8e84c801 FP |
430 | if (p_env->packing != DO_PACKED) |
431 | return held_skb; | |
1da177e4 LT |
432 | /* get a new SKB we will pack at least one */ |
433 | new_skb = dev_alloc_skb(p_env->write_size); | |
434 | if (new_skb == NULL) { | |
435 | atomic_inc(&held_skb->users); | |
436 | skb_queue_head(&p_ch->collect_queue,held_skb); | |
437 | return NULL; | |
438 | } | |
439 | /* we have packed packet and a place to put it */ | |
440 | pk_ind = 1; | |
441 | so_far = 0; | |
442 | new_skb->cb[1] = 'P'; /* every skb on queue has pack header */ | |
443 | while ((pk_ind) && (held_skb != NULL)) { | |
444 | if (held_skb->len+so_far <= p_env->write_size-8) { | |
445 | memcpy(skb_put(new_skb,held_skb->len), | |
446 | held_skb->data,held_skb->len); | |
447 | privptr->stats.tx_packets++; | |
448 | so_far += held_skb->len; | |
449 | pkt_cnt++; | |
8e84c801 | 450 | dev_kfree_skb_any(held_skb); |
1da177e4 LT |
451 | held_skb = skb_dequeue(&p_ch->collect_queue); |
452 | if (held_skb) | |
453 | atomic_dec(&held_skb->users); | |
454 | } else { | |
455 | pk_ind = 0; | |
456 | atomic_inc(&held_skb->users); | |
457 | skb_queue_head(&p_ch->collect_queue,held_skb); | |
458 | } | |
459 | } | |
460 | #ifdef IOTRACE | |
461 | printk(KERN_INFO "%s: %s() Packed %d len %d\n", | |
462 | p_env->ndev->name, | |
463 | __FUNCTION__,pkt_cnt,new_skb->len); | |
464 | #endif | |
465 | } | |
466 | CLAW_DBF_TEXT(4,trace,"PackSKBx"); | |
467 | return new_skb; | |
468 | } | |
469 | ||
470 | /*-------------------------------------------------------------------* | |
471 | * claw_change_mtu * | |
472 | * * | |
473 | *-------------------------------------------------------------------*/ | |
474 | ||
475 | static int | |
476 | claw_change_mtu(struct net_device *dev, int new_mtu) | |
477 | { | |
478 | struct claw_privbk *privptr=dev->priv; | |
479 | int buff_size; | |
480 | #ifdef FUNCTRACE | |
481 | printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__); | |
482 | #endif | |
483 | #ifdef DEBUGMSG | |
484 | printk(KERN_INFO "variable dev =\n"); | |
485 | dumpit((char *) dev, sizeof(struct net_device)); | |
486 | printk(KERN_INFO "variable new_mtu = %d\n", new_mtu); | |
487 | #endif | |
488 | CLAW_DBF_TEXT(4,trace,"setmtu"); | |
489 | buff_size = privptr->p_env->write_size; | |
490 | if ((new_mtu < 60) || (new_mtu > buff_size)) { | |
491 | #ifdef FUNCTRACE | |
492 | printk(KERN_INFO "%s:%s Exit on line %d, rc=EINVAL\n", | |
493 | dev->name, | |
494 | __FUNCTION__, __LINE__); | |
495 | #endif | |
496 | return -EINVAL; | |
497 | } | |
498 | dev->mtu = new_mtu; | |
499 | #ifdef FUNCTRACE | |
500 | printk(KERN_INFO "%s:%s Exit on line %d\n",dev->name, | |
501 | __FUNCTION__, __LINE__); | |
502 | #endif | |
503 | return 0; | |
504 | } /* end of claw_change_mtu */ | |
505 | ||
506 | ||
507 | /*-------------------------------------------------------------------* | |
508 | * claw_open * | |
509 | * * | |
510 | *-------------------------------------------------------------------*/ | |
511 | static int | |
512 | claw_open(struct net_device *dev) | |
513 | { | |
514 | ||
515 | int rc; | |
516 | int i; | |
517 | unsigned long saveflags=0; | |
518 | unsigned long parm; | |
519 | struct claw_privbk *privptr; | |
520 | DECLARE_WAITQUEUE(wait, current); | |
521 | struct timer_list timer; | |
522 | struct ccwbk *p_buf; | |
523 | ||
524 | #ifdef FUNCTRACE | |
525 | printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__); | |
526 | #endif | |
527 | CLAW_DBF_TEXT(4,trace,"open"); | |
68e3c5e3 | 528 | if (!dev || (dev->name[0] == 0x00)) { |
1da177e4 LT |
529 | CLAW_DBF_TEXT(2,trace,"BadDev"); |
530 | printk(KERN_WARNING "claw: Bad device at open failing \n"); | |
531 | return -ENODEV; | |
532 | } | |
533 | privptr = (struct claw_privbk *)dev->priv; | |
534 | /* allocate and initialize CCW blocks */ | |
535 | if (privptr->buffs_alloc == 0) { | |
536 | rc=init_ccw_bk(dev); | |
537 | if (rc) { | |
538 | printk(KERN_INFO "%s:%s Exit on line %d, rc=ENOMEM\n", | |
539 | dev->name, | |
540 | __FUNCTION__, __LINE__); | |
541 | CLAW_DBF_TEXT(2,trace,"openmem"); | |
542 | return -ENOMEM; | |
543 | } | |
544 | } | |
545 | privptr->system_validate_comp=0; | |
546 | privptr->release_pend=0; | |
547 | if(strncmp(privptr->p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
548 | privptr->p_env->read_size=DEF_PACK_BUFSIZE; | |
549 | privptr->p_env->write_size=DEF_PACK_BUFSIZE; | |
550 | privptr->p_env->packing=PACKING_ASK; | |
551 | } else { | |
552 | privptr->p_env->packing=0; | |
553 | privptr->p_env->read_size=CLAW_FRAME_SIZE; | |
554 | privptr->p_env->write_size=CLAW_FRAME_SIZE; | |
555 | } | |
556 | claw_set_busy(dev); | |
557 | tasklet_init(&privptr->channel[READ].tasklet, claw_irq_tasklet, | |
558 | (unsigned long) &privptr->channel[READ]); | |
559 | for ( i = 0; i < 2; i++) { | |
560 | CLAW_DBF_TEXT_(2,trace,"opn_ch%d",i); | |
561 | init_waitqueue_head(&privptr->channel[i].wait); | |
562 | /* skb_queue_head_init(&p_ch->io_queue); */ | |
563 | if (i == WRITE) | |
564 | skb_queue_head_init( | |
565 | &privptr->channel[WRITE].collect_queue); | |
566 | privptr->channel[i].flag_a = 0; | |
567 | privptr->channel[i].IO_active = 0; | |
568 | privptr->channel[i].flag &= ~CLAW_TIMER; | |
569 | init_timer(&timer); | |
570 | timer.function = (void *)claw_timer; | |
571 | timer.data = (unsigned long)(&privptr->channel[i]); | |
572 | timer.expires = jiffies + 15*HZ; | |
573 | add_timer(&timer); | |
574 | spin_lock_irqsave(get_ccwdev_lock( | |
575 | privptr->channel[i].cdev), saveflags); | |
576 | parm = (unsigned long) &privptr->channel[i]; | |
577 | privptr->channel[i].claw_state = CLAW_START_HALT_IO; | |
578 | rc = 0; | |
579 | add_wait_queue(&privptr->channel[i].wait, &wait); | |
580 | rc = ccw_device_halt( | |
581 | (struct ccw_device *)privptr->channel[i].cdev,parm); | |
582 | set_current_state(TASK_INTERRUPTIBLE); | |
583 | spin_unlock_irqrestore( | |
584 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
585 | schedule(); | |
586 | set_current_state(TASK_RUNNING); | |
587 | remove_wait_queue(&privptr->channel[i].wait, &wait); | |
588 | if(rc != 0) | |
589 | ccw_check_return_code(privptr->channel[i].cdev, rc); | |
590 | if((privptr->channel[i].flag & CLAW_TIMER) == 0x00) | |
591 | del_timer(&timer); | |
592 | } | |
593 | if ((((privptr->channel[READ].last_dstat | | |
594 | privptr->channel[WRITE].last_dstat) & | |
595 | ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) || | |
596 | (((privptr->channel[READ].flag | | |
597 | privptr->channel[WRITE].flag) & CLAW_TIMER) != 0x00)) { | |
598 | #ifdef DEBUGMSG | |
599 | printk(KERN_INFO "%s: channel problems during open - read:" | |
600 | " %02x - write: %02x\n", | |
601 | dev->name, | |
602 | privptr->channel[READ].last_dstat, | |
603 | privptr->channel[WRITE].last_dstat); | |
604 | #endif | |
605 | printk(KERN_INFO "%s: remote side is not ready\n", dev->name); | |
606 | CLAW_DBF_TEXT(2,trace,"notrdy"); | |
607 | ||
608 | for ( i = 0; i < 2; i++) { | |
609 | spin_lock_irqsave( | |
610 | get_ccwdev_lock(privptr->channel[i].cdev), | |
611 | saveflags); | |
612 | parm = (unsigned long) &privptr->channel[i]; | |
613 | privptr->channel[i].claw_state = CLAW_STOP; | |
614 | rc = ccw_device_halt( | |
615 | (struct ccw_device *)&privptr->channel[i].cdev, | |
616 | parm); | |
617 | spin_unlock_irqrestore( | |
618 | get_ccwdev_lock(privptr->channel[i].cdev), | |
619 | saveflags); | |
620 | if (rc != 0) { | |
621 | ccw_check_return_code( | |
622 | privptr->channel[i].cdev, rc); | |
623 | } | |
624 | } | |
625 | free_pages((unsigned long)privptr->p_buff_ccw, | |
626 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
627 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
628 | free_pages((unsigned long)privptr->p_buff_read, | |
629 | (int)pages_to_order_of_mag( | |
630 | privptr->p_buff_read_num)); | |
631 | } | |
632 | else { | |
633 | p_buf=privptr->p_read_active_first; | |
634 | while (p_buf!=NULL) { | |
635 | free_pages((unsigned long)p_buf->p_buffer, | |
636 | (int)pages_to_order_of_mag( | |
637 | privptr->p_buff_pages_perread )); | |
638 | p_buf=p_buf->next; | |
639 | } | |
640 | } | |
641 | if (privptr->p_env->write_size < PAGE_SIZE ) { | |
642 | free_pages((unsigned long)privptr->p_buff_write, | |
643 | (int)pages_to_order_of_mag( | |
644 | privptr->p_buff_write_num)); | |
645 | } | |
646 | else { | |
647 | p_buf=privptr->p_write_active_first; | |
648 | while (p_buf!=NULL) { | |
649 | free_pages((unsigned long)p_buf->p_buffer, | |
650 | (int)pages_to_order_of_mag( | |
651 | privptr->p_buff_pages_perwrite )); | |
652 | p_buf=p_buf->next; | |
653 | } | |
654 | } | |
655 | privptr->buffs_alloc = 0; | |
656 | privptr->channel[READ].flag= 0x00; | |
657 | privptr->channel[WRITE].flag = 0x00; | |
658 | privptr->p_buff_ccw=NULL; | |
659 | privptr->p_buff_read=NULL; | |
660 | privptr->p_buff_write=NULL; | |
661 | claw_clear_busy(dev); | |
662 | #ifdef FUNCTRACE | |
663 | printk(KERN_INFO "%s:%s Exit on line %d, rc=EIO\n", | |
664 | dev->name,__FUNCTION__,__LINE__); | |
665 | #endif | |
666 | CLAW_DBF_TEXT(2,trace,"open EIO"); | |
667 | return -EIO; | |
668 | } | |
669 | ||
670 | /* Send SystemValidate command */ | |
671 | ||
672 | claw_clear_busy(dev); | |
673 | ||
674 | #ifdef FUNCTRACE | |
675 | printk(KERN_INFO "%s:%s Exit on line %d, rc=0\n", | |
676 | dev->name,__FUNCTION__,__LINE__); | |
677 | #endif | |
678 | CLAW_DBF_TEXT(4,trace,"openok"); | |
679 | return 0; | |
680 | } /* end of claw_open */ | |
681 | ||
682 | /*-------------------------------------------------------------------* | |
683 | * * | |
684 | * claw_irq_handler * | |
685 | * * | |
686 | *--------------------------------------------------------------------*/ | |
687 | static void | |
688 | claw_irq_handler(struct ccw_device *cdev, | |
689 | unsigned long intparm, struct irb *irb) | |
690 | { | |
691 | struct chbk *p_ch = NULL; | |
692 | struct claw_privbk *privptr = NULL; | |
693 | struct net_device *dev = NULL; | |
694 | struct claw_env *p_env; | |
695 | struct chbk *p_ch_r=NULL; | |
696 | ||
697 | ||
698 | #ifdef FUNCTRACE | |
699 | printk(KERN_INFO "%s enter \n",__FUNCTION__); | |
700 | #endif | |
701 | CLAW_DBF_TEXT(4,trace,"clawirq"); | |
702 | /* Bypass all 'unsolicited interrupts' */ | |
703 | if (!cdev->dev.driver_data) { | |
704 | printk(KERN_WARNING "claw: unsolicited interrupt for device:" | |
705 | "%s received c-%02x d-%02x\n", | |
706 | cdev->dev.bus_id,irb->scsw.cstat, irb->scsw.dstat); | |
707 | #ifdef FUNCTRACE | |
708 | printk(KERN_INFO "claw: %s() " | |
709 | "exit on line %d\n",__FUNCTION__,__LINE__); | |
710 | #endif | |
711 | CLAW_DBF_TEXT(2,trace,"badirq"); | |
712 | return; | |
713 | } | |
714 | privptr = (struct claw_privbk *)cdev->dev.driver_data; | |
715 | ||
716 | /* Try to extract channel from driver data. */ | |
717 | if (privptr->channel[READ].cdev == cdev) | |
718 | p_ch = &privptr->channel[READ]; | |
719 | else if (privptr->channel[WRITE].cdev == cdev) | |
720 | p_ch = &privptr->channel[WRITE]; | |
721 | else { | |
722 | printk(KERN_WARNING "claw: Can't determine channel for " | |
723 | "interrupt, device %s\n", cdev->dev.bus_id); | |
724 | CLAW_DBF_TEXT(2,trace,"badchan"); | |
725 | return; | |
726 | } | |
727 | CLAW_DBF_TEXT_(4,trace,"IRQCH=%d",p_ch->flag); | |
728 | ||
729 | dev = (struct net_device *) (p_ch->ndev); | |
730 | p_env=privptr->p_env; | |
731 | ||
732 | #ifdef IOTRACE | |
733 | printk(KERN_INFO "%s: interrupt for device: %04x " | |
734 | "received c-%02x d-%02x state-%02x\n", | |
735 | dev->name, p_ch->devno, irb->scsw.cstat, | |
736 | irb->scsw.dstat, p_ch->claw_state); | |
737 | #endif | |
738 | ||
739 | /* Copy interruption response block. */ | |
740 | memcpy(p_ch->irb, irb, sizeof(struct irb)); | |
741 | ||
742 | /* Check for good subchannel return code, otherwise error message */ | |
743 | if (irb->scsw.cstat && !(irb->scsw.cstat & SCHN_STAT_PCI)) { | |
744 | printk(KERN_INFO "%s: subchannel check for device: %04x -" | |
745 | " Sch Stat %02x Dev Stat %02x CPA - %04x\n", | |
746 | dev->name, p_ch->devno, | |
747 | irb->scsw.cstat, irb->scsw.dstat,irb->scsw.cpa); | |
748 | #ifdef IOTRACE | |
749 | dumpit((char *)irb,sizeof(struct irb)); | |
750 | dumpit((char *)(unsigned long)irb->scsw.cpa, | |
751 | sizeof(struct ccw1)); | |
752 | #endif | |
753 | #ifdef FUNCTRACE | |
754 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
755 | dev->name,__FUNCTION__,__LINE__); | |
756 | #endif | |
757 | CLAW_DBF_TEXT(2,trace,"chanchk"); | |
758 | /* return; */ | |
759 | } | |
760 | ||
761 | /* Check the reason-code of a unit check */ | |
762 | if (irb->scsw.dstat & DEV_STAT_UNIT_CHECK) { | |
763 | ccw_check_unit_check(p_ch, irb->ecw[0]); | |
764 | } | |
765 | ||
766 | /* State machine to bring the connection up, down and to restart */ | |
767 | p_ch->last_dstat = irb->scsw.dstat; | |
768 | ||
769 | switch (p_ch->claw_state) { | |
770 | case CLAW_STOP:/* HALT_IO by claw_release (halt sequence) */ | |
771 | #ifdef DEBUGMSG | |
772 | printk(KERN_INFO "%s: CLAW_STOP enter\n", dev->name); | |
773 | #endif | |
774 | if (!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) || | |
775 | (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) || | |
776 | (p_ch->irb->scsw.stctl == | |
777 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
778 | #ifdef FUNCTRACE | |
779 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
780 | dev->name,__FUNCTION__,__LINE__); | |
781 | #endif | |
782 | return; | |
783 | } | |
784 | wake_up(&p_ch->wait); /* wake up claw_release */ | |
785 | ||
786 | #ifdef DEBUGMSG | |
787 | printk(KERN_INFO "%s: CLAW_STOP exit\n", dev->name); | |
788 | #endif | |
789 | #ifdef FUNCTRACE | |
790 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
791 | dev->name,__FUNCTION__,__LINE__); | |
792 | #endif | |
793 | CLAW_DBF_TEXT(4,trace,"stop"); | |
794 | return; | |
795 | ||
796 | case CLAW_START_HALT_IO: /* HALT_IO issued by claw_open */ | |
797 | #ifdef DEBUGMSG | |
798 | printk(KERN_INFO "%s: process CLAW_STAT_HALT_IO\n", | |
799 | dev->name); | |
800 | #endif | |
801 | if (!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) || | |
802 | (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) || | |
803 | (p_ch->irb->scsw.stctl == | |
804 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
805 | #ifdef FUNCTRACE | |
806 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
807 | dev->name,__FUNCTION__,__LINE__); | |
808 | #endif | |
809 | CLAW_DBF_TEXT(4,trace,"haltio"); | |
810 | return; | |
811 | } | |
812 | if (p_ch->flag == CLAW_READ) { | |
813 | p_ch->claw_state = CLAW_START_READ; | |
814 | wake_up(&p_ch->wait); /* wake claw_open (READ)*/ | |
815 | } | |
816 | else | |
817 | if (p_ch->flag == CLAW_WRITE) { | |
818 | p_ch->claw_state = CLAW_START_WRITE; | |
819 | /* send SYSTEM_VALIDATE */ | |
820 | claw_strt_read(dev, LOCK_NO); | |
821 | claw_send_control(dev, | |
822 | SYSTEM_VALIDATE_REQUEST, | |
823 | 0, 0, 0, | |
824 | p_env->host_name, | |
825 | p_env->adapter_name ); | |
826 | } else { | |
827 | printk(KERN_WARNING "claw: unsolicited " | |
828 | "interrupt for device:" | |
829 | "%s received c-%02x d-%02x\n", | |
830 | cdev->dev.bus_id, | |
831 | irb->scsw.cstat, | |
832 | irb->scsw.dstat); | |
833 | return; | |
834 | } | |
835 | #ifdef DEBUGMSG | |
836 | printk(KERN_INFO "%s: process CLAW_STAT_HALT_IO exit\n", | |
837 | dev->name); | |
838 | #endif | |
839 | #ifdef FUNCTRACE | |
840 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
841 | dev->name,__FUNCTION__,__LINE__); | |
842 | #endif | |
843 | CLAW_DBF_TEXT(4,trace,"haltio"); | |
844 | return; | |
845 | case CLAW_START_READ: | |
846 | CLAW_DBF_TEXT(4,trace,"ReadIRQ"); | |
847 | if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_CHECK) { | |
848 | clear_bit(0, (void *)&p_ch->IO_active); | |
849 | if ((p_ch->irb->ecw[0] & 0x41) == 0x41 || | |
850 | (p_ch->irb->ecw[0] & 0x40) == 0x40 || | |
851 | (p_ch->irb->ecw[0]) == 0) | |
852 | { | |
853 | privptr->stats.rx_errors++; | |
854 | printk(KERN_INFO "%s: Restart is " | |
855 | "required after remote " | |
856 | "side recovers \n", | |
857 | dev->name); | |
858 | } | |
859 | #ifdef FUNCTRACE | |
860 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
861 | dev->name,__FUNCTION__,__LINE__); | |
862 | #endif | |
863 | CLAW_DBF_TEXT(4,trace,"notrdy"); | |
864 | return; | |
865 | } | |
866 | if ((p_ch->irb->scsw.cstat & SCHN_STAT_PCI) && | |
867 | (p_ch->irb->scsw.dstat==0)) { | |
868 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
869 | (void *)&p_ch->flag_a) == 0) { | |
870 | tasklet_schedule(&p_ch->tasklet); | |
871 | } | |
872 | else { | |
873 | CLAW_DBF_TEXT(4,trace,"PCINoBH"); | |
874 | } | |
875 | #ifdef FUNCTRACE | |
876 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
877 | dev->name,__FUNCTION__,__LINE__); | |
878 | #endif | |
879 | CLAW_DBF_TEXT(4,trace,"PCI_read"); | |
880 | return; | |
881 | } | |
882 | if(!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) || | |
883 | (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) || | |
884 | (p_ch->irb->scsw.stctl == | |
885 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
886 | #ifdef FUNCTRACE | |
887 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
888 | dev->name,__FUNCTION__,__LINE__); | |
889 | #endif | |
890 | CLAW_DBF_TEXT(4,trace,"SPend_rd"); | |
891 | return; | |
892 | } | |
893 | clear_bit(0, (void *)&p_ch->IO_active); | |
894 | claw_clearbit_busy(TB_RETRY,dev); | |
895 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
896 | (void *)&p_ch->flag_a) == 0) { | |
897 | tasklet_schedule(&p_ch->tasklet); | |
898 | } | |
899 | else { | |
900 | CLAW_DBF_TEXT(4,trace,"RdBHAct"); | |
901 | } | |
902 | ||
903 | #ifdef DEBUGMSG | |
904 | printk(KERN_INFO "%s: process CLAW_START_READ exit\n", | |
905 | dev->name); | |
906 | #endif | |
907 | #ifdef FUNCTRACE | |
908 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
909 | dev->name,__FUNCTION__,__LINE__); | |
910 | #endif | |
911 | CLAW_DBF_TEXT(4,trace,"RdIRQXit"); | |
912 | return; | |
913 | case CLAW_START_WRITE: | |
914 | if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_CHECK) { | |
915 | printk(KERN_INFO "%s: Unit Check Occured in " | |
916 | "write channel\n",dev->name); | |
917 | clear_bit(0, (void *)&p_ch->IO_active); | |
918 | if (p_ch->irb->ecw[0] & 0x80 ) { | |
919 | printk(KERN_INFO "%s: Resetting Event " | |
920 | "occurred:\n",dev->name); | |
921 | init_timer(&p_ch->timer); | |
922 | p_ch->timer.function = | |
923 | (void *)claw_write_retry; | |
924 | p_ch->timer.data = (unsigned long)p_ch; | |
925 | p_ch->timer.expires = jiffies + 10*HZ; | |
926 | add_timer(&p_ch->timer); | |
927 | printk(KERN_INFO "%s: write connection " | |
928 | "restarting\n",dev->name); | |
929 | } | |
930 | #ifdef FUNCTRACE | |
931 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
932 | dev->name,__FUNCTION__,__LINE__); | |
933 | #endif | |
934 | CLAW_DBF_TEXT(4,trace,"rstrtwrt"); | |
935 | return; | |
936 | } | |
937 | if (p_ch->irb->scsw.dstat & DEV_STAT_UNIT_EXCEP) { | |
938 | clear_bit(0, (void *)&p_ch->IO_active); | |
939 | printk(KERN_INFO "%s: Unit Exception " | |
940 | "Occured in write channel\n", | |
941 | dev->name); | |
942 | } | |
943 | if(!((p_ch->irb->scsw.stctl & SCSW_STCTL_SEC_STATUS) || | |
944 | (p_ch->irb->scsw.stctl == SCSW_STCTL_STATUS_PEND) || | |
945 | (p_ch->irb->scsw.stctl == | |
946 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
947 | #ifdef FUNCTRACE | |
948 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
949 | dev->name,__FUNCTION__,__LINE__); | |
950 | #endif | |
951 | CLAW_DBF_TEXT(4,trace,"writeUE"); | |
952 | return; | |
953 | } | |
954 | clear_bit(0, (void *)&p_ch->IO_active); | |
955 | if (claw_test_and_setbit_busy(TB_TX,dev)==0) { | |
956 | claw_write_next(p_ch); | |
957 | claw_clearbit_busy(TB_TX,dev); | |
958 | claw_clear_busy(dev); | |
959 | } | |
960 | p_ch_r=(struct chbk *)&privptr->channel[READ]; | |
961 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
962 | (void *)&p_ch_r->flag_a) == 0) { | |
963 | tasklet_schedule(&p_ch_r->tasklet); | |
964 | } | |
965 | ||
966 | #ifdef DEBUGMSG | |
967 | printk(KERN_INFO "%s: process CLAW_START_WRITE exit\n", | |
968 | dev->name); | |
969 | #endif | |
970 | #ifdef FUNCTRACE | |
971 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
972 | dev->name,__FUNCTION__,__LINE__); | |
973 | #endif | |
974 | CLAW_DBF_TEXT(4,trace,"StWtExit"); | |
975 | return; | |
976 | default: | |
977 | printk(KERN_WARNING "%s: wrong selection code - irq " | |
978 | "state=%d\n",dev->name,p_ch->claw_state); | |
979 | #ifdef FUNCTRACE | |
980 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
981 | dev->name,__FUNCTION__,__LINE__); | |
982 | #endif | |
983 | CLAW_DBF_TEXT(2,trace,"badIRQ"); | |
984 | return; | |
985 | } | |
986 | ||
987 | } /* end of claw_irq_handler */ | |
988 | ||
989 | ||
990 | /*-------------------------------------------------------------------* | |
991 | * claw_irq_tasklet * | |
992 | * * | |
993 | *--------------------------------------------------------------------*/ | |
994 | static void | |
995 | claw_irq_tasklet ( unsigned long data ) | |
996 | { | |
997 | struct chbk * p_ch; | |
998 | struct net_device *dev; | |
999 | struct claw_privbk * privptr; | |
1000 | ||
1001 | p_ch = (struct chbk *) data; | |
1002 | dev = (struct net_device *)p_ch->ndev; | |
1003 | #ifdef FUNCTRACE | |
1004 | printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__); | |
1005 | #endif | |
1006 | #ifdef DEBUGMSG | |
1007 | printk(KERN_INFO "%s: variable p_ch =\n",dev->name); | |
1008 | dumpit((char *) p_ch, sizeof(struct chbk)); | |
1009 | #endif | |
1010 | CLAW_DBF_TEXT(4,trace,"IRQtask"); | |
1011 | ||
1012 | privptr = (struct claw_privbk *) dev->priv; | |
1013 | ||
1014 | #ifdef DEBUGMSG | |
1015 | printk(KERN_INFO "%s: bh routine - state-%02x\n" , | |
1016 | dev->name, p_ch->claw_state); | |
1017 | #endif | |
1018 | ||
1019 | unpack_read(dev); | |
1020 | clear_bit(CLAW_BH_ACTIVE, (void *)&p_ch->flag_a); | |
1021 | CLAW_DBF_TEXT(4,trace,"TskletXt"); | |
1022 | #ifdef FUNCTRACE | |
1023 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1024 | dev->name,__FUNCTION__,__LINE__); | |
1025 | #endif | |
1026 | return; | |
1027 | } /* end of claw_irq_bh */ | |
1028 | ||
1029 | /*-------------------------------------------------------------------* | |
1030 | * claw_release * | |
1031 | * * | |
1032 | *--------------------------------------------------------------------*/ | |
1033 | static int | |
1034 | claw_release(struct net_device *dev) | |
1035 | { | |
1036 | int rc; | |
1037 | int i; | |
1038 | unsigned long saveflags; | |
1039 | unsigned long parm; | |
1040 | struct claw_privbk *privptr; | |
1041 | DECLARE_WAITQUEUE(wait, current); | |
1042 | struct ccwbk* p_this_ccw; | |
1043 | struct ccwbk* p_buf; | |
1044 | ||
1045 | if (!dev) | |
1046 | return 0; | |
1047 | privptr = (struct claw_privbk *) dev->priv; | |
1048 | if (!privptr) | |
1049 | return 0; | |
1050 | #ifdef FUNCTRACE | |
1051 | printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__); | |
1052 | #endif | |
1053 | CLAW_DBF_TEXT(4,trace,"release"); | |
1054 | #ifdef DEBUGMSG | |
1055 | printk(KERN_INFO "%s: variable dev =\n",dev->name); | |
1056 | dumpit((char *) dev, sizeof(struct net_device)); | |
1057 | printk(KERN_INFO "Priv Buffalloc %d\n",privptr->buffs_alloc); | |
1058 | printk(KERN_INFO "Priv p_buff_ccw = %p\n",&privptr->p_buff_ccw); | |
1059 | #endif | |
1060 | privptr->release_pend=1; | |
1061 | claw_setbit_busy(TB_STOP,dev); | |
1062 | for ( i = 1; i >=0 ; i--) { | |
1063 | spin_lock_irqsave( | |
1064 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
1065 | /* del_timer(&privptr->channel[READ].timer); */ | |
1066 | privptr->channel[i].claw_state = CLAW_STOP; | |
1067 | privptr->channel[i].IO_active = 0; | |
1068 | parm = (unsigned long) &privptr->channel[i]; | |
1069 | if (i == WRITE) | |
1070 | claw_purge_skb_queue( | |
1071 | &privptr->channel[WRITE].collect_queue); | |
1072 | rc = ccw_device_halt (privptr->channel[i].cdev, parm); | |
1073 | if (privptr->system_validate_comp==0x00) /* never opened? */ | |
1074 | init_waitqueue_head(&privptr->channel[i].wait); | |
1075 | add_wait_queue(&privptr->channel[i].wait, &wait); | |
1076 | set_current_state(TASK_INTERRUPTIBLE); | |
1077 | spin_unlock_irqrestore( | |
1078 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
1079 | schedule(); | |
1080 | set_current_state(TASK_RUNNING); | |
1081 | remove_wait_queue(&privptr->channel[i].wait, &wait); | |
1082 | if (rc != 0) { | |
1083 | ccw_check_return_code(privptr->channel[i].cdev, rc); | |
1084 | } | |
1085 | } | |
1086 | if (privptr->pk_skb != NULL) { | |
8e84c801 | 1087 | dev_kfree_skb_any(privptr->pk_skb); |
1da177e4 LT |
1088 | privptr->pk_skb = NULL; |
1089 | } | |
1090 | if(privptr->buffs_alloc != 1) { | |
1091 | #ifdef FUNCTRACE | |
1092 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1093 | dev->name,__FUNCTION__,__LINE__); | |
1094 | #endif | |
1095 | CLAW_DBF_TEXT(4,trace,"none2fre"); | |
1096 | return 0; | |
1097 | } | |
1098 | CLAW_DBF_TEXT(4,trace,"freebufs"); | |
1099 | if (privptr->p_buff_ccw != NULL) { | |
1100 | free_pages((unsigned long)privptr->p_buff_ccw, | |
1101 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
1102 | } | |
1103 | CLAW_DBF_TEXT(4,trace,"freeread"); | |
1104 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
1105 | if (privptr->p_buff_read != NULL) { | |
1106 | free_pages((unsigned long)privptr->p_buff_read, | |
1107 | (int)pages_to_order_of_mag(privptr->p_buff_read_num)); | |
1108 | } | |
1109 | } | |
1110 | else { | |
1111 | p_buf=privptr->p_read_active_first; | |
1112 | while (p_buf!=NULL) { | |
1113 | free_pages((unsigned long)p_buf->p_buffer, | |
1114 | (int)pages_to_order_of_mag( | |
1115 | privptr->p_buff_pages_perread )); | |
1116 | p_buf=p_buf->next; | |
1117 | } | |
1118 | } | |
1119 | CLAW_DBF_TEXT(4,trace,"freewrit"); | |
1120 | if (privptr->p_env->write_size < PAGE_SIZE ) { | |
1121 | free_pages((unsigned long)privptr->p_buff_write, | |
1122 | (int)pages_to_order_of_mag(privptr->p_buff_write_num)); | |
1123 | } | |
1124 | else { | |
1125 | p_buf=privptr->p_write_active_first; | |
1126 | while (p_buf!=NULL) { | |
1127 | free_pages((unsigned long)p_buf->p_buffer, | |
1128 | (int)pages_to_order_of_mag( | |
1129 | privptr->p_buff_pages_perwrite )); | |
1130 | p_buf=p_buf->next; | |
1131 | } | |
1132 | } | |
1133 | CLAW_DBF_TEXT(4,trace,"clearptr"); | |
1134 | privptr->buffs_alloc = 0; | |
1135 | privptr->p_buff_ccw=NULL; | |
1136 | privptr->p_buff_read=NULL; | |
1137 | privptr->p_buff_write=NULL; | |
1138 | privptr->system_validate_comp=0; | |
1139 | privptr->release_pend=0; | |
1140 | /* Remove any writes that were pending and reset all reads */ | |
1141 | p_this_ccw=privptr->p_read_active_first; | |
1142 | while (p_this_ccw!=NULL) { | |
1143 | p_this_ccw->header.length=0xffff; | |
1144 | p_this_ccw->header.opcode=0xff; | |
1145 | p_this_ccw->header.flag=0x00; | |
1146 | p_this_ccw=p_this_ccw->next; | |
1147 | } | |
1148 | ||
1149 | while (privptr->p_write_active_first!=NULL) { | |
1150 | p_this_ccw=privptr->p_write_active_first; | |
1151 | p_this_ccw->header.flag=CLAW_PENDING; | |
1152 | privptr->p_write_active_first=p_this_ccw->next; | |
1153 | p_this_ccw->next=privptr->p_write_free_chain; | |
1154 | privptr->p_write_free_chain=p_this_ccw; | |
1155 | ++privptr->write_free_count; | |
1156 | } | |
1157 | privptr->p_write_active_last=NULL; | |
1158 | privptr->mtc_logical_link = -1; | |
1159 | privptr->mtc_skipping = 1; | |
1160 | privptr->mtc_offset=0; | |
1161 | ||
1162 | if (((privptr->channel[READ].last_dstat | | |
1163 | privptr->channel[WRITE].last_dstat) & | |
1164 | ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) { | |
1165 | printk(KERN_WARNING "%s: channel problems during close - " | |
1166 | "read: %02x - write: %02x\n", | |
1167 | dev->name, | |
1168 | privptr->channel[READ].last_dstat, | |
1169 | privptr->channel[WRITE].last_dstat); | |
1170 | CLAW_DBF_TEXT(2,trace,"badclose"); | |
1171 | } | |
1172 | #ifdef FUNCTRACE | |
1173 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1174 | dev->name,__FUNCTION__,__LINE__); | |
1175 | #endif | |
1176 | CLAW_DBF_TEXT(4,trace,"rlsexit"); | |
1177 | return 0; | |
1178 | } /* end of claw_release */ | |
1179 | ||
1180 | ||
1181 | ||
1182 | /*-------------------------------------------------------------------* | |
1183 | * claw_write_retry * | |
1184 | * * | |
1185 | *--------------------------------------------------------------------*/ | |
1186 | ||
1187 | static void | |
1188 | claw_write_retry ( struct chbk *p_ch ) | |
1189 | { | |
1190 | ||
1191 | struct net_device *dev=p_ch->ndev; | |
1192 | ||
1193 | ||
1194 | #ifdef FUNCTRACE | |
1195 | printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__); | |
1196 | printk(KERN_INFO "claw: variable p_ch =\n"); | |
1197 | dumpit((char *) p_ch, sizeof(struct chbk)); | |
1198 | #endif | |
1199 | CLAW_DBF_TEXT(4,trace,"w_retry"); | |
1200 | if (p_ch->claw_state == CLAW_STOP) { | |
1201 | #ifdef FUNCTRACE | |
1202 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1203 | dev->name,__FUNCTION__,__LINE__); | |
1204 | #endif | |
1205 | return; | |
1206 | } | |
1207 | #ifdef DEBUGMSG | |
1208 | printk( KERN_INFO "%s:%s state-%02x\n" , | |
1209 | dev->name, | |
1210 | __FUNCTION__, | |
1211 | p_ch->claw_state); | |
1212 | #endif | |
1213 | claw_strt_out_IO( dev ); | |
1214 | #ifdef FUNCTRACE | |
1215 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1216 | dev->name,__FUNCTION__,__LINE__); | |
1217 | #endif | |
1218 | CLAW_DBF_TEXT(4,trace,"rtry_xit"); | |
1219 | return; | |
1220 | } /* end of claw_write_retry */ | |
1221 | ||
1222 | ||
1223 | /*-------------------------------------------------------------------* | |
1224 | * claw_write_next * | |
1225 | * * | |
1226 | *--------------------------------------------------------------------*/ | |
1227 | ||
1228 | static void | |
1229 | claw_write_next ( struct chbk * p_ch ) | |
1230 | { | |
1231 | ||
1232 | struct net_device *dev; | |
1233 | struct claw_privbk *privptr=NULL; | |
1234 | struct sk_buff *pk_skb; | |
1235 | int rc; | |
1236 | ||
1237 | #ifdef FUNCTRACE | |
1238 | printk(KERN_INFO "%s:%s Enter \n",p_ch->ndev->name,__FUNCTION__); | |
1239 | printk(KERN_INFO "%s: variable p_ch =\n",p_ch->ndev->name); | |
1240 | dumpit((char *) p_ch, sizeof(struct chbk)); | |
1241 | #endif | |
1242 | CLAW_DBF_TEXT(4,trace,"claw_wrt"); | |
1243 | if (p_ch->claw_state == CLAW_STOP) | |
1244 | return; | |
1245 | dev = (struct net_device *) p_ch->ndev; | |
1246 | privptr = (struct claw_privbk *) dev->priv; | |
1247 | claw_free_wrt_buf( dev ); | |
1248 | if ((privptr->write_free_count > 0) && | |
b03efcfb | 1249 | !skb_queue_empty(&p_ch->collect_queue)) { |
1da177e4 LT |
1250 | pk_skb = claw_pack_skb(privptr); |
1251 | while (pk_skb != NULL) { | |
1252 | rc = claw_hw_tx( pk_skb, dev,1); | |
1253 | if (privptr->write_free_count > 0) { | |
1254 | pk_skb = claw_pack_skb(privptr); | |
1255 | } else | |
1256 | pk_skb = NULL; | |
1257 | } | |
1258 | } | |
1259 | if (privptr->p_write_active_first!=NULL) { | |
1260 | claw_strt_out_IO(dev); | |
1261 | } | |
1262 | ||
1263 | #ifdef FUNCTRACE | |
1264 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1265 | dev->name,__FUNCTION__,__LINE__); | |
1266 | #endif | |
1267 | return; | |
1268 | } /* end of claw_write_next */ | |
1269 | ||
1270 | /*-------------------------------------------------------------------* | |
1271 | * * | |
1272 | * claw_timer * | |
1273 | *--------------------------------------------------------------------*/ | |
1274 | ||
1275 | static void | |
1276 | claw_timer ( struct chbk * p_ch ) | |
1277 | { | |
1278 | #ifdef FUNCTRACE | |
1279 | printk(KERN_INFO "%s:%s Entry\n",p_ch->ndev->name,__FUNCTION__); | |
1280 | printk(KERN_INFO "%s: variable p_ch =\n",p_ch->ndev->name); | |
1281 | dumpit((char *) p_ch, sizeof(struct chbk)); | |
1282 | #endif | |
1283 | CLAW_DBF_TEXT(4,trace,"timer"); | |
1284 | p_ch->flag |= CLAW_TIMER; | |
1285 | wake_up(&p_ch->wait); | |
1286 | #ifdef FUNCTRACE | |
1287 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1288 | p_ch->ndev->name,__FUNCTION__,__LINE__); | |
1289 | #endif | |
1290 | return; | |
1291 | } /* end of claw_timer */ | |
1292 | ||
1293 | ||
1294 | /* | |
1295 | * | |
1296 | * functions | |
1297 | */ | |
1298 | ||
1299 | ||
1300 | /*-------------------------------------------------------------------* | |
1301 | * * | |
1302 | * pages_to_order_of_mag * | |
1303 | * * | |
1304 | * takes a number of pages from 1 to 512 and returns the * | |
1305 | * log(num_pages)/log(2) get_free_pages() needs a base 2 order * | |
1306 | * of magnitude get_free_pages() has an upper order of 9 * | |
1307 | *--------------------------------------------------------------------*/ | |
1308 | ||
4d284cac | 1309 | static int |
1da177e4 LT |
1310 | pages_to_order_of_mag(int num_of_pages) |
1311 | { | |
1312 | int order_of_mag=1; /* assume 2 pages */ | |
1313 | int nump=2; | |
1314 | #ifdef FUNCTRACE | |
1315 | printk(KERN_INFO "%s Enter pages = %d \n",__FUNCTION__,num_of_pages); | |
1316 | #endif | |
1317 | CLAW_DBF_TEXT_(5,trace,"pages%d",num_of_pages); | |
1318 | if (num_of_pages == 1) {return 0; } /* magnitude of 0 = 1 page */ | |
1319 | /* 512 pages = 2Meg on 4k page systems */ | |
1320 | if (num_of_pages >= 512) {return 9; } | |
1321 | /* we have two or more pages order is at least 1 */ | |
1322 | for (nump=2 ;nump <= 512;nump*=2) { | |
1323 | if (num_of_pages <= nump) | |
1324 | break; | |
1325 | order_of_mag +=1; | |
1326 | } | |
1327 | if (order_of_mag > 9) { order_of_mag = 9; } /* I know it's paranoid */ | |
1328 | #ifdef FUNCTRACE | |
1329 | printk(KERN_INFO "%s Exit on line %d, order = %d\n", | |
1330 | __FUNCTION__,__LINE__, order_of_mag); | |
1331 | #endif | |
1332 | CLAW_DBF_TEXT_(5,trace,"mag%d",order_of_mag); | |
1333 | return order_of_mag; | |
1334 | } | |
1335 | ||
1336 | /*-------------------------------------------------------------------* | |
1337 | * * | |
1338 | * add_claw_reads * | |
1339 | * * | |
1340 | *--------------------------------------------------------------------*/ | |
1341 | static int | |
1342 | add_claw_reads(struct net_device *dev, struct ccwbk* p_first, | |
1343 | struct ccwbk* p_last) | |
1344 | { | |
1345 | struct claw_privbk *privptr; | |
1346 | struct ccw1 temp_ccw; | |
1347 | struct endccw * p_end; | |
1348 | #ifdef IOTRACE | |
1349 | struct ccwbk* p_buf; | |
1350 | #endif | |
1351 | #ifdef FUNCTRACE | |
1352 | printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__); | |
1353 | #endif | |
1354 | #ifdef DEBUGMSG | |
1355 | printk(KERN_INFO "dev\n"); | |
1356 | dumpit((char *) dev, sizeof(struct net_device)); | |
1357 | printk(KERN_INFO "p_first\n"); | |
1358 | dumpit((char *) p_first, sizeof(struct ccwbk)); | |
1359 | printk(KERN_INFO "p_last\n"); | |
1360 | dumpit((char *) p_last, sizeof(struct ccwbk)); | |
1361 | #endif | |
1362 | CLAW_DBF_TEXT(4,trace,"addreads"); | |
1363 | privptr = dev->priv; | |
1364 | p_end = privptr->p_end_ccw; | |
1365 | ||
1366 | /* first CCW and last CCW contains a new set of read channel programs | |
1367 | * to apend the running channel programs | |
1368 | */ | |
1369 | if ( p_first==NULL) { | |
1370 | #ifdef FUNCTRACE | |
1371 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1372 | dev->name,__FUNCTION__,__LINE__); | |
1373 | #endif | |
1374 | CLAW_DBF_TEXT(4,trace,"addexit"); | |
1375 | return 0; | |
1376 | } | |
1377 | ||
1378 | /* set up ending CCW sequence for this segment */ | |
1379 | if (p_end->read1) { | |
1380 | p_end->read1=0x00; /* second ending CCW is now active */ | |
1381 | /* reset ending CCWs and setup TIC CCWs */ | |
1382 | p_end->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1383 | p_end->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1384 | p_last->r_TIC_1.cda =(__u32)__pa(&p_end->read2_nop1); | |
1385 | p_last->r_TIC_2.cda =(__u32)__pa(&p_end->read2_nop1); | |
1386 | p_end->read2_nop2.cda=0; | |
1387 | p_end->read2_nop2.count=1; | |
1388 | } | |
1389 | else { | |
1390 | p_end->read1=0x01; /* first ending CCW is now active */ | |
1391 | /* reset ending CCWs and setup TIC CCWs */ | |
1392 | p_end->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1393 | p_end->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1394 | p_last->r_TIC_1.cda = (__u32)__pa(&p_end->read1_nop1); | |
1395 | p_last->r_TIC_2.cda = (__u32)__pa(&p_end->read1_nop1); | |
1396 | p_end->read1_nop2.cda=0; | |
1397 | p_end->read1_nop2.count=1; | |
1398 | } | |
1399 | ||
1400 | if ( privptr-> p_read_active_first ==NULL ) { | |
1401 | #ifdef DEBUGMSG | |
80682fa9 | 1402 | printk(KERN_INFO "%s:%s p_read_active_first == NULL \n", |
1da177e4 LT |
1403 | dev->name,__FUNCTION__); |
1404 | printk(KERN_INFO "%s:%s Read active first/last changed \n", | |
1405 | dev->name,__FUNCTION__); | |
1406 | #endif | |
1407 | privptr-> p_read_active_first= p_first; /* set new first */ | |
1408 | privptr-> p_read_active_last = p_last; /* set new last */ | |
1409 | } | |
1410 | else { | |
1411 | ||
1412 | #ifdef DEBUGMSG | |
1413 | printk(KERN_INFO "%s:%s Read in progress \n", | |
1414 | dev->name,__FUNCTION__); | |
1415 | #endif | |
1416 | /* set up TIC ccw */ | |
1417 | temp_ccw.cda= (__u32)__pa(&p_first->read); | |
1418 | temp_ccw.count=0; | |
1419 | temp_ccw.flags=0; | |
1420 | temp_ccw.cmd_code = CCW_CLAW_CMD_TIC; | |
1421 | ||
1422 | ||
1423 | if (p_end->read1) { | |
1424 | ||
1425 | /* first set of CCW's is chained to the new read */ | |
1426 | /* chain, so the second set is chained to the active chain. */ | |
1427 | /* Therefore modify the second set to point to the new */ | |
1428 | /* read chain set up TIC CCWs */ | |
1429 | /* make sure we update the CCW so channel doesn't fetch it */ | |
1430 | /* when it's only half done */ | |
1431 | memcpy( &p_end->read2_nop2, &temp_ccw , | |
1432 | sizeof(struct ccw1)); | |
1433 | privptr->p_read_active_last->r_TIC_1.cda= | |
1434 | (__u32)__pa(&p_first->read); | |
1435 | privptr->p_read_active_last->r_TIC_2.cda= | |
1436 | (__u32)__pa(&p_first->read); | |
1437 | } | |
1438 | else { | |
1439 | /* make sure we update the CCW so channel doesn't */ | |
1440 | /* fetch it when it is only half done */ | |
1441 | memcpy( &p_end->read1_nop2, &temp_ccw , | |
1442 | sizeof(struct ccw1)); | |
1443 | privptr->p_read_active_last->r_TIC_1.cda= | |
1444 | (__u32)__pa(&p_first->read); | |
1445 | privptr->p_read_active_last->r_TIC_2.cda= | |
1446 | (__u32)__pa(&p_first->read); | |
1447 | } | |
1448 | /* chain in new set of blocks */ | |
1449 | privptr->p_read_active_last->next = p_first; | |
1450 | privptr->p_read_active_last=p_last; | |
1451 | } /* end of if ( privptr-> p_read_active_first ==NULL) */ | |
1452 | #ifdef IOTRACE | |
1453 | printk(KERN_INFO "%s:%s dump p_last CCW BK \n",dev->name,__FUNCTION__); | |
1454 | dumpit((char *)p_last, sizeof(struct ccwbk)); | |
1455 | printk(KERN_INFO "%s:%s dump p_end CCW BK \n",dev->name,__FUNCTION__); | |
1456 | dumpit((char *)p_end, sizeof(struct endccw)); | |
1457 | ||
1458 | printk(KERN_INFO "%s:%s dump p_first CCW BK \n",dev->name,__FUNCTION__); | |
1459 | dumpit((char *)p_first, sizeof(struct ccwbk)); | |
1460 | printk(KERN_INFO "%s:%s Dump Active CCW chain \n", | |
1461 | dev->name,__FUNCTION__); | |
1462 | p_buf=privptr->p_read_active_first; | |
1463 | while (p_buf!=NULL) { | |
1464 | dumpit((char *)p_buf, sizeof(struct ccwbk)); | |
1465 | p_buf=p_buf->next; | |
1466 | } | |
1467 | #endif | |
1468 | #ifdef FUNCTRACE | |
1469 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1470 | dev->name,__FUNCTION__,__LINE__); | |
1471 | #endif | |
1472 | CLAW_DBF_TEXT(4,trace,"addexit"); | |
1473 | return 0; | |
1474 | } /* end of add_claw_reads */ | |
1475 | ||
1476 | /*-------------------------------------------------------------------* | |
1477 | * ccw_check_return_code * | |
1478 | * * | |
1479 | *-------------------------------------------------------------------*/ | |
1480 | ||
4d284cac | 1481 | static void |
1da177e4 LT |
1482 | ccw_check_return_code(struct ccw_device *cdev, int return_code) |
1483 | { | |
1484 | #ifdef FUNCTRACE | |
1485 | printk(KERN_INFO "%s: %s() > enter \n", | |
1486 | cdev->dev.bus_id,__FUNCTION__); | |
1487 | #endif | |
1488 | CLAW_DBF_TEXT(4,trace,"ccwret"); | |
1489 | #ifdef DEBUGMSG | |
1490 | printk(KERN_INFO "variable cdev =\n"); | |
1491 | dumpit((char *) cdev, sizeof(struct ccw_device)); | |
1492 | printk(KERN_INFO "variable return_code = %d\n",return_code); | |
1493 | #endif | |
1494 | if (return_code != 0) { | |
1495 | switch (return_code) { | |
1496 | case -EBUSY: | |
1497 | printk(KERN_INFO "%s: Busy !\n", | |
1498 | cdev->dev.bus_id); | |
1499 | break; | |
1500 | case -ENODEV: | |
1501 | printk(KERN_EMERG "%s: Missing device called " | |
1502 | "for IO ENODEV\n", cdev->dev.bus_id); | |
1503 | break; | |
1504 | case -EIO: | |
1505 | printk(KERN_EMERG "%s: Status pending... EIO \n", | |
1506 | cdev->dev.bus_id); | |
1507 | break; | |
1508 | case -EINVAL: | |
1509 | printk(KERN_EMERG "%s: Invalid Dev State EINVAL \n", | |
1510 | cdev->dev.bus_id); | |
1511 | break; | |
1512 | default: | |
1513 | printk(KERN_EMERG "%s: Unknown error in " | |
1514 | "Do_IO %d\n",cdev->dev.bus_id, return_code); | |
1515 | } | |
1516 | } | |
1517 | #ifdef FUNCTRACE | |
1518 | printk(KERN_INFO "%s: %s() > exit on line %d\n", | |
1519 | cdev->dev.bus_id,__FUNCTION__,__LINE__); | |
1520 | #endif | |
1521 | CLAW_DBF_TEXT(4,trace,"ccwret"); | |
1522 | } /* end of ccw_check_return_code */ | |
1523 | ||
1524 | /*-------------------------------------------------------------------* | |
1525 | * ccw_check_unit_check * | |
1526 | *--------------------------------------------------------------------*/ | |
1527 | ||
4d284cac | 1528 | static void |
1da177e4 LT |
1529 | ccw_check_unit_check(struct chbk * p_ch, unsigned char sense ) |
1530 | { | |
1531 | struct net_device *dev = p_ch->ndev; | |
1532 | ||
1533 | #ifdef FUNCTRACE | |
1534 | printk(KERN_INFO "%s: %s() > enter\n",dev->name,__FUNCTION__); | |
1535 | #endif | |
1536 | #ifdef DEBUGMSG | |
1537 | printk(KERN_INFO "%s: variable dev =\n",dev->name); | |
1538 | dumpit((char *)dev, sizeof(struct net_device)); | |
1539 | printk(KERN_INFO "%s: variable sense =\n",dev->name); | |
1540 | dumpit((char *)&sense, 2); | |
1541 | #endif | |
1542 | CLAW_DBF_TEXT(4,trace,"unitchek"); | |
1543 | ||
1544 | printk(KERN_INFO "%s: Unit Check with sense byte:0x%04x\n", | |
1545 | dev->name, sense); | |
1546 | ||
1547 | if (sense & 0x40) { | |
1548 | if (sense & 0x01) { | |
1549 | printk(KERN_WARNING "%s: Interface disconnect or " | |
1550 | "Selective reset " | |
1551 | "occurred (remote side)\n", dev->name); | |
1552 | } | |
1553 | else { | |
1554 | printk(KERN_WARNING "%s: System reset occured" | |
1555 | " (remote side)\n", dev->name); | |
1556 | } | |
1557 | } | |
1558 | else if (sense & 0x20) { | |
1559 | if (sense & 0x04) { | |
1560 | printk(KERN_WARNING "%s: Data-streaming " | |
1561 | "timeout)\n", dev->name); | |
1562 | } | |
1563 | else { | |
1564 | printk(KERN_WARNING "%s: Data-transfer parity" | |
1565 | " error\n", dev->name); | |
1566 | } | |
1567 | } | |
1568 | else if (sense & 0x10) { | |
1569 | if (sense & 0x20) { | |
1570 | printk(KERN_WARNING "%s: Hardware malfunction " | |
1571 | "(remote side)\n", dev->name); | |
1572 | } | |
1573 | else { | |
1574 | printk(KERN_WARNING "%s: read-data parity error " | |
1575 | "(remote side)\n", dev->name); | |
1576 | } | |
1577 | } | |
1578 | ||
1579 | #ifdef FUNCTRACE | |
1580 | printk(KERN_INFO "%s: %s() exit on line %d\n", | |
1581 | dev->name,__FUNCTION__,__LINE__); | |
1582 | #endif | |
1583 | } /* end of ccw_check_unit_check */ | |
1584 | ||
1585 | ||
1586 | ||
1587 | /*-------------------------------------------------------------------* | |
1588 | * Dump buffer format * | |
1589 | * * | |
1590 | *--------------------------------------------------------------------*/ | |
1591 | #ifdef DEBUG | |
1592 | static void | |
1593 | dumpit(char* buf, int len) | |
1594 | { | |
1595 | ||
1596 | __u32 ct, sw, rm, dup; | |
1597 | char *ptr, *rptr; | |
1598 | char tbuf[82], tdup[82]; | |
347a8dc3 | 1599 | #if (CONFIG_64BIT) |
1da177e4 LT |
1600 | char addr[22]; |
1601 | #else | |
1602 | char addr[12]; | |
1603 | #endif | |
1604 | char boff[12]; | |
1605 | char bhex[82], duphex[82]; | |
1606 | char basc[40]; | |
1607 | ||
1608 | sw = 0; | |
1609 | rptr =ptr=buf; | |
1610 | rm = 16; | |
1611 | duphex[0] = 0x00; | |
1612 | dup = 0; | |
1613 | for ( ct=0; ct < len; ct++, ptr++, rptr++ ) { | |
1614 | if (sw == 0) { | |
347a8dc3 | 1615 | #if (CONFIG_64BIT) |
1da177e4 LT |
1616 | sprintf(addr, "%16.16lX",(unsigned long)rptr); |
1617 | #else | |
1618 | sprintf(addr, "%8.8X",(__u32)rptr); | |
1619 | #endif | |
1620 | sprintf(boff, "%4.4X", (__u32)ct); | |
1621 | bhex[0] = '\0'; | |
1622 | basc[0] = '\0'; | |
1623 | } | |
1624 | if ((sw == 4) || (sw == 12)) { | |
1625 | strcat(bhex, " "); | |
1626 | } | |
1627 | if (sw == 8) { | |
1628 | strcat(bhex, " "); | |
1629 | } | |
347a8dc3 | 1630 | #if (CONFIG_64BIT) |
1da177e4 LT |
1631 | sprintf(tbuf,"%2.2lX", (unsigned long)*ptr); |
1632 | #else | |
1633 | sprintf(tbuf,"%2.2X", (__u32)*ptr); | |
1634 | #endif | |
1635 | tbuf[2] = '\0'; | |
1636 | strcat(bhex, tbuf); | |
1637 | if ((0!=isprint(*ptr)) && (*ptr >= 0x20)) { | |
1638 | basc[sw] = *ptr; | |
1639 | } | |
1640 | else { | |
1641 | basc[sw] = '.'; | |
1642 | } | |
1643 | basc[sw+1] = '\0'; | |
1644 | sw++; | |
1645 | rm--; | |
1646 | if (sw==16) { | |
1647 | if ((strcmp(duphex, bhex)) !=0) { | |
1648 | if (dup !=0) { | |
1649 | sprintf(tdup,"Duplicate as above to" | |
1650 | " %s", addr); | |
1651 | printk( KERN_INFO " " | |
1652 | " --- %s ---\n",tdup); | |
1653 | } | |
1654 | printk( KERN_INFO " %s (+%s) : %s [%s]\n", | |
1655 | addr, boff, bhex, basc); | |
1656 | dup = 0; | |
1657 | strcpy(duphex, bhex); | |
1658 | } | |
1659 | else { | |
1660 | dup++; | |
1661 | } | |
1662 | sw = 0; | |
1663 | rm = 16; | |
1664 | } | |
1665 | } /* endfor */ | |
1666 | ||
1667 | if (sw != 0) { | |
1668 | for ( ; rm > 0; rm--, sw++ ) { | |
1669 | if ((sw==4) || (sw==12)) strcat(bhex, " "); | |
1670 | if (sw==8) strcat(bhex, " "); | |
1671 | strcat(bhex, " "); | |
1672 | strcat(basc, " "); | |
1673 | } | |
1674 | if (dup !=0) { | |
1675 | sprintf(tdup,"Duplicate as above to %s", addr); | |
1676 | printk( KERN_INFO " --- %s ---\n", | |
1677 | tdup); | |
1678 | } | |
1679 | printk( KERN_INFO " %s (+%s) : %s [%s]\n", | |
1680 | addr, boff, bhex, basc); | |
1681 | } | |
1682 | else { | |
1683 | if (dup >=1) { | |
1684 | sprintf(tdup,"Duplicate as above to %s", addr); | |
1685 | printk( KERN_INFO " --- %s ---\n", | |
1686 | tdup); | |
1687 | } | |
1688 | if (dup !=0) { | |
1689 | printk( KERN_INFO " %s (+%s) : %s [%s]\n", | |
1690 | addr, boff, bhex, basc); | |
1691 | } | |
1692 | } | |
1693 | return; | |
1694 | ||
1695 | } /* end of dumpit */ | |
1696 | #endif | |
1697 | ||
1698 | /*-------------------------------------------------------------------* | |
1699 | * find_link * | |
1700 | *--------------------------------------------------------------------*/ | |
1701 | static int | |
1702 | find_link(struct net_device *dev, char *host_name, char *ws_name ) | |
1703 | { | |
1704 | struct claw_privbk *privptr; | |
1705 | struct claw_env *p_env; | |
1706 | int rc=0; | |
1707 | ||
1708 | #ifdef FUNCTRACE | |
1709 | printk(KERN_INFO "%s:%s > enter \n",dev->name,__FUNCTION__); | |
1710 | #endif | |
1711 | CLAW_DBF_TEXT(2,setup,"findlink"); | |
1712 | #ifdef DEBUGMSG | |
1713 | printk(KERN_INFO "%s: variable dev = \n",dev->name); | |
1714 | dumpit((char *) dev, sizeof(struct net_device)); | |
1715 | printk(KERN_INFO "%s: variable host_name = %s\n",dev->name, host_name); | |
1716 | printk(KERN_INFO "%s: variable ws_name = %s\n",dev->name, ws_name); | |
1717 | #endif | |
1718 | privptr=dev->priv; | |
1719 | p_env=privptr->p_env; | |
1720 | switch (p_env->packing) | |
1721 | { | |
1722 | case PACKING_ASK: | |
1723 | if ((memcmp(WS_APPL_NAME_PACKED, host_name, 8)!=0) || | |
1724 | (memcmp(WS_APPL_NAME_PACKED, ws_name, 8)!=0 )) | |
1725 | rc = EINVAL; | |
1726 | break; | |
1727 | case DO_PACKED: | |
1728 | case PACK_SEND: | |
1729 | if ((memcmp(WS_APPL_NAME_IP_NAME, host_name, 8)!=0) || | |
1730 | (memcmp(WS_APPL_NAME_IP_NAME, ws_name, 8)!=0 )) | |
1731 | rc = EINVAL; | |
1732 | break; | |
1733 | default: | |
1734 | if ((memcmp(HOST_APPL_NAME, host_name, 8)!=0) || | |
1735 | (memcmp(p_env->api_type , ws_name, 8)!=0)) | |
1736 | rc = EINVAL; | |
1737 | break; | |
1738 | } | |
1739 | ||
1740 | #ifdef FUNCTRACE | |
1741 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
1742 | dev->name,__FUNCTION__,__LINE__); | |
1743 | #endif | |
1744 | return 0; | |
1745 | } /* end of find_link */ | |
1746 | ||
1747 | /*-------------------------------------------------------------------* | |
1748 | * claw_hw_tx * | |
1749 | * * | |
1750 | * * | |
1751 | *-------------------------------------------------------------------*/ | |
1752 | ||
1753 | static int | |
1754 | claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid) | |
1755 | { | |
1756 | int rc=0; | |
1757 | struct claw_privbk *privptr; | |
1758 | struct ccwbk *p_this_ccw; | |
1759 | struct ccwbk *p_first_ccw; | |
1760 | struct ccwbk *p_last_ccw; | |
1761 | __u32 numBuffers; | |
1762 | signed long len_of_data; | |
1763 | unsigned long bytesInThisBuffer; | |
1764 | unsigned char *pDataAddress; | |
1765 | struct endccw *pEnd; | |
1766 | struct ccw1 tempCCW; | |
1767 | struct chbk *p_ch; | |
1768 | struct claw_env *p_env; | |
1769 | int lock; | |
1770 | struct clawph *pk_head; | |
1771 | struct chbk *ch; | |
1772 | #ifdef IOTRACE | |
1773 | struct ccwbk *p_buf; | |
1774 | #endif | |
1775 | #ifdef FUNCTRACE | |
1776 | printk(KERN_INFO "%s: %s() > enter\n",dev->name,__FUNCTION__); | |
1777 | #endif | |
1778 | CLAW_DBF_TEXT(4,trace,"hw_tx"); | |
1779 | #ifdef DEBUGMSG | |
1780 | printk(KERN_INFO "%s: variable dev skb =\n",dev->name); | |
1781 | dumpit((char *) skb, sizeof(struct sk_buff)); | |
1782 | printk(KERN_INFO "%s: variable dev =\n",dev->name); | |
1783 | dumpit((char *) dev, sizeof(struct net_device)); | |
1784 | printk(KERN_INFO "%s: variable linkid = %ld\n",dev->name,linkid); | |
1785 | #endif | |
1786 | privptr = (struct claw_privbk *) (dev->priv); | |
1787 | p_ch=(struct chbk *)&privptr->channel[WRITE]; | |
1788 | p_env =privptr->p_env; | |
1789 | #ifdef IOTRACE | |
1790 | printk(KERN_INFO "%s: %s() dump sk_buff \n",dev->name,__FUNCTION__); | |
1791 | dumpit((char *)skb ,sizeof(struct sk_buff)); | |
1792 | #endif | |
1793 | claw_free_wrt_buf(dev); /* Clean up free chain if posible */ | |
1794 | /* scan the write queue to free any completed write packets */ | |
1795 | p_first_ccw=NULL; | |
1796 | p_last_ccw=NULL; | |
1797 | if ((p_env->packing >= PACK_SEND) && | |
1798 | (skb->cb[1] != 'P')) { | |
1799 | skb_push(skb,sizeof(struct clawph)); | |
1800 | pk_head=(struct clawph *)skb->data; | |
1801 | pk_head->len=skb->len-sizeof(struct clawph); | |
1802 | if (pk_head->len%4) { | |
1803 | pk_head->len+= 4-(pk_head->len%4); | |
1804 | skb_pad(skb,4-(pk_head->len%4)); | |
1805 | skb_put(skb,4-(pk_head->len%4)); | |
1806 | } | |
1807 | if (p_env->packing == DO_PACKED) | |
1808 | pk_head->link_num = linkid; | |
1809 | else | |
1810 | pk_head->link_num = 0; | |
1811 | pk_head->flag = 0x00; | |
1812 | skb_pad(skb,4); | |
1813 | skb->cb[1] = 'P'; | |
1814 | } | |
1815 | if (linkid == 0) { | |
1816 | if (claw_check_busy(dev)) { | |
1817 | if (privptr->write_free_count!=0) { | |
1818 | claw_clear_busy(dev); | |
1819 | } | |
1820 | else { | |
1821 | claw_strt_out_IO(dev ); | |
1822 | claw_free_wrt_buf( dev ); | |
1823 | if (privptr->write_free_count==0) { | |
1824 | #ifdef IOTRACE | |
1825 | printk(KERN_INFO "%s: " | |
1826 | "(claw_check_busy) no free write " | |
1827 | "buffers\n", dev->name); | |
1828 | #endif | |
1829 | ch = &privptr->channel[WRITE]; | |
1830 | atomic_inc(&skb->users); | |
1831 | skb_queue_tail(&ch->collect_queue, skb); | |
1832 | goto Done; | |
1833 | } | |
1834 | else { | |
1835 | claw_clear_busy(dev); | |
1836 | } | |
1837 | } | |
1838 | } | |
1839 | /* tx lock */ | |
1840 | if (claw_test_and_setbit_busy(TB_TX,dev)) { /* set to busy */ | |
1841 | #ifdef DEBUGMSG | |
1842 | printk(KERN_INFO "%s: busy (claw_test_and_setbit_" | |
1843 | "busy)\n", dev->name); | |
1844 | #endif | |
1845 | ch = &privptr->channel[WRITE]; | |
1846 | atomic_inc(&skb->users); | |
1847 | skb_queue_tail(&ch->collect_queue, skb); | |
1848 | claw_strt_out_IO(dev ); | |
1849 | rc=-EBUSY; | |
1850 | goto Done2; | |
1851 | } | |
1852 | } | |
1853 | /* See how many write buffers are required to hold this data */ | |
1854 | numBuffers= ( skb->len + privptr->p_env->write_size - 1) / | |
1855 | ( privptr->p_env->write_size); | |
1856 | ||
1857 | /* If that number of buffers isn't available, give up for now */ | |
1858 | if (privptr->write_free_count < numBuffers || | |
1859 | privptr->p_write_free_chain == NULL ) { | |
1860 | ||
1861 | claw_setbit_busy(TB_NOBUFFER,dev); | |
1862 | ||
1863 | #ifdef DEBUGMSG | |
1864 | printk(KERN_INFO "%s: busy (claw_setbit_busy" | |
1865 | "(TB_NOBUFFER))\n", dev->name); | |
1866 | printk(KERN_INFO " free_count: %d, numBuffers : %d\n", | |
1867 | (int)privptr->write_free_count,(int) numBuffers ); | |
1868 | #endif | |
1869 | ch = &privptr->channel[WRITE]; | |
1870 | atomic_inc(&skb->users); | |
1871 | skb_queue_tail(&ch->collect_queue, skb); | |
1872 | CLAW_DBF_TEXT(2,trace,"clawbusy"); | |
1873 | goto Done2; | |
1874 | } | |
1875 | pDataAddress=skb->data; | |
1876 | len_of_data=skb->len; | |
1877 | ||
1878 | while (len_of_data > 0) { | |
1879 | #ifdef DEBUGMSG | |
1880 | printk(KERN_INFO "%s: %s() length-of-data is %ld \n", | |
1881 | dev->name ,__FUNCTION__,len_of_data); | |
1882 | dumpit((char *)pDataAddress ,64); | |
1883 | #endif | |
1884 | p_this_ccw=privptr->p_write_free_chain; /* get a block */ | |
1885 | if (p_this_ccw == NULL) { /* lost the race */ | |
1886 | ch = &privptr->channel[WRITE]; | |
1887 | atomic_inc(&skb->users); | |
1888 | skb_queue_tail(&ch->collect_queue, skb); | |
1889 | goto Done2; | |
1890 | } | |
1891 | privptr->p_write_free_chain=p_this_ccw->next; | |
1892 | p_this_ccw->next=NULL; | |
1893 | --privptr->write_free_count; /* -1 */ | |
1894 | bytesInThisBuffer=len_of_data; | |
1895 | memcpy( p_this_ccw->p_buffer,pDataAddress, bytesInThisBuffer); | |
1896 | len_of_data-=bytesInThisBuffer; | |
1897 | pDataAddress+=(unsigned long)bytesInThisBuffer; | |
1898 | /* setup write CCW */ | |
1899 | p_this_ccw->write.cmd_code = (linkid * 8) +1; | |
1900 | if (len_of_data>0) { | |
1901 | p_this_ccw->write.cmd_code+=MORE_to_COME_FLAG; | |
1902 | } | |
1903 | p_this_ccw->write.count=bytesInThisBuffer; | |
1904 | /* now add to end of this chain */ | |
1905 | if (p_first_ccw==NULL) { | |
1906 | p_first_ccw=p_this_ccw; | |
1907 | } | |
1908 | if (p_last_ccw!=NULL) { | |
1909 | p_last_ccw->next=p_this_ccw; | |
1910 | /* set up TIC ccws */ | |
1911 | p_last_ccw->w_TIC_1.cda= | |
1912 | (__u32)__pa(&p_this_ccw->write); | |
1913 | } | |
1914 | p_last_ccw=p_this_ccw; /* save new last block */ | |
1915 | #ifdef IOTRACE | |
1916 | printk(KERN_INFO "%s: %s() > CCW and Buffer %ld bytes long \n", | |
1917 | dev->name,__FUNCTION__,bytesInThisBuffer); | |
1918 | dumpit((char *)p_this_ccw, sizeof(struct ccwbk)); | |
1919 | dumpit((char *)p_this_ccw->p_buffer, 64); | |
1920 | #endif | |
1921 | } | |
1922 | ||
1923 | /* FirstCCW and LastCCW now contain a new set of write channel | |
1924 | * programs to append to the running channel program | |
1925 | */ | |
1926 | ||
1927 | if (p_first_ccw!=NULL) { | |
1928 | /* setup ending ccw sequence for this segment */ | |
1929 | pEnd=privptr->p_end_ccw; | |
1930 | if (pEnd->write1) { | |
1931 | pEnd->write1=0x00; /* second end ccw is now active */ | |
1932 | /* set up Tic CCWs */ | |
1933 | p_last_ccw->w_TIC_1.cda= | |
1934 | (__u32)__pa(&pEnd->write2_nop1); | |
1935 | pEnd->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1936 | pEnd->write2_nop2.flags = | |
1937 | CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1938 | pEnd->write2_nop2.cda=0; | |
1939 | pEnd->write2_nop2.count=1; | |
1940 | } | |
1941 | else { /* end of if (pEnd->write1)*/ | |
1942 | pEnd->write1=0x01; /* first end ccw is now active */ | |
1943 | /* set up Tic CCWs */ | |
1944 | p_last_ccw->w_TIC_1.cda= | |
1945 | (__u32)__pa(&pEnd->write1_nop1); | |
1946 | pEnd->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1947 | pEnd->write1_nop2.flags = | |
1948 | CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1949 | pEnd->write1_nop2.cda=0; | |
1950 | pEnd->write1_nop2.count=1; | |
1951 | } /* end if if (pEnd->write1) */ | |
1952 | ||
1953 | ||
1954 | if (privptr->p_write_active_first==NULL ) { | |
1955 | privptr->p_write_active_first=p_first_ccw; | |
1956 | privptr->p_write_active_last=p_last_ccw; | |
1957 | } | |
1958 | else { | |
1959 | ||
1960 | /* set up Tic CCWs */ | |
1961 | ||
1962 | tempCCW.cda=(__u32)__pa(&p_first_ccw->write); | |
1963 | tempCCW.count=0; | |
1964 | tempCCW.flags=0; | |
1965 | tempCCW.cmd_code=CCW_CLAW_CMD_TIC; | |
1966 | ||
1967 | if (pEnd->write1) { | |
1968 | ||
1969 | /* | |
1970 | * first set of ending CCW's is chained to the new write | |
1971 | * chain, so the second set is chained to the active chain | |
1972 | * Therefore modify the second set to point the new write chain. | |
1973 | * make sure we update the CCW atomically | |
1974 | * so channel does not fetch it when it's only half done | |
1975 | */ | |
1976 | memcpy( &pEnd->write2_nop2, &tempCCW , | |
1977 | sizeof(struct ccw1)); | |
1978 | privptr->p_write_active_last->w_TIC_1.cda= | |
1979 | (__u32)__pa(&p_first_ccw->write); | |
1980 | } | |
1981 | else { | |
1982 | ||
1983 | /*make sure we update the CCW atomically | |
1984 | *so channel does not fetch it when it's only half done | |
1985 | */ | |
1986 | memcpy(&pEnd->write1_nop2, &tempCCW , | |
1987 | sizeof(struct ccw1)); | |
1988 | privptr->p_write_active_last->w_TIC_1.cda= | |
1989 | (__u32)__pa(&p_first_ccw->write); | |
1990 | ||
1991 | } /* end if if (pEnd->write1) */ | |
1992 | ||
1993 | privptr->p_write_active_last->next=p_first_ccw; | |
1994 | privptr->p_write_active_last=p_last_ccw; | |
1995 | } | |
1996 | ||
1997 | } /* endif (p_first_ccw!=NULL) */ | |
1998 | ||
1999 | ||
2000 | #ifdef IOTRACE | |
2001 | printk(KERN_INFO "%s: %s() > Dump Active CCW chain \n", | |
2002 | dev->name,__FUNCTION__); | |
2003 | p_buf=privptr->p_write_active_first; | |
2004 | while (p_buf!=NULL) { | |
2005 | dumpit((char *)p_buf, sizeof(struct ccwbk)); | |
2006 | p_buf=p_buf->next; | |
2007 | } | |
2008 | p_buf=(struct ccwbk*)privptr->p_end_ccw; | |
2009 | dumpit((char *)p_buf, sizeof(struct endccw)); | |
2010 | #endif | |
8e84c801 | 2011 | dev_kfree_skb_any(skb); |
1da177e4 LT |
2012 | if (linkid==0) { |
2013 | lock=LOCK_NO; | |
2014 | } | |
2015 | else { | |
2016 | lock=LOCK_YES; | |
2017 | } | |
2018 | claw_strt_out_IO(dev ); | |
2019 | /* if write free count is zero , set NOBUFFER */ | |
2020 | #ifdef DEBUGMSG | |
2021 | printk(KERN_INFO "%s: %s() > free_count is %d\n", | |
2022 | dev->name,__FUNCTION__, | |
2023 | (int) privptr->write_free_count ); | |
2024 | #endif | |
2025 | if (privptr->write_free_count==0) { | |
2026 | claw_setbit_busy(TB_NOBUFFER,dev); | |
2027 | } | |
2028 | Done2: | |
2029 | claw_clearbit_busy(TB_TX,dev); | |
2030 | Done: | |
2031 | #ifdef FUNCTRACE | |
2032 | printk(KERN_INFO "%s: %s() > exit on line %d, rc = %d \n", | |
2033 | dev->name,__FUNCTION__,__LINE__, rc); | |
2034 | #endif | |
2035 | return(rc); | |
2036 | } /* end of claw_hw_tx */ | |
2037 | ||
2038 | /*-------------------------------------------------------------------* | |
2039 | * * | |
2040 | * init_ccw_bk * | |
2041 | * * | |
2042 | *--------------------------------------------------------------------*/ | |
2043 | ||
2044 | static int | |
2045 | init_ccw_bk(struct net_device *dev) | |
2046 | { | |
2047 | ||
2048 | __u32 ccw_blocks_required; | |
2049 | __u32 ccw_blocks_perpage; | |
2050 | __u32 ccw_pages_required; | |
2051 | __u32 claw_reads_perpage=1; | |
2052 | __u32 claw_read_pages; | |
2053 | __u32 claw_writes_perpage=1; | |
2054 | __u32 claw_write_pages; | |
2055 | void *p_buff=NULL; | |
2056 | struct ccwbk*p_free_chain; | |
2057 | struct ccwbk*p_buf; | |
2058 | struct ccwbk*p_last_CCWB; | |
2059 | struct ccwbk*p_first_CCWB; | |
2060 | struct endccw *p_endccw=NULL; | |
2061 | addr_t real_address; | |
2062 | struct claw_privbk *privptr=dev->priv; | |
2063 | struct clawh *pClawH=NULL; | |
2064 | addr_t real_TIC_address; | |
2065 | int i,j; | |
2066 | #ifdef FUNCTRACE | |
2067 | printk(KERN_INFO "%s: %s() enter \n",dev->name,__FUNCTION__); | |
2068 | #endif | |
2069 | CLAW_DBF_TEXT(4,trace,"init_ccw"); | |
2070 | #ifdef DEBUGMSG | |
2071 | printk(KERN_INFO "%s: variable dev =\n",dev->name); | |
2072 | dumpit((char *) dev, sizeof(struct net_device)); | |
2073 | #endif | |
2074 | ||
2075 | /* initialize statistics field */ | |
2076 | privptr->active_link_ID=0; | |
2077 | /* initialize ccwbk pointers */ | |
2078 | privptr->p_write_free_chain=NULL; /* pointer to free ccw chain*/ | |
2079 | privptr->p_write_active_first=NULL; /* pointer to the first write ccw*/ | |
2080 | privptr->p_write_active_last=NULL; /* pointer to the last write ccw*/ | |
2081 | privptr->p_read_active_first=NULL; /* pointer to the first read ccw*/ | |
2082 | privptr->p_read_active_last=NULL; /* pointer to the last read ccw */ | |
2083 | privptr->p_end_ccw=NULL; /* pointer to ending ccw */ | |
2084 | privptr->p_claw_signal_blk=NULL; /* pointer to signal block */ | |
2085 | privptr->buffs_alloc = 0; | |
2086 | memset(&privptr->end_ccw, 0x00, sizeof(struct endccw)); | |
2087 | memset(&privptr->ctl_bk, 0x00, sizeof(struct clawctl)); | |
2088 | /* initialize free write ccwbk counter */ | |
2089 | privptr->write_free_count=0; /* number of free bufs on write chain */ | |
2090 | p_last_CCWB = NULL; | |
2091 | p_first_CCWB= NULL; | |
2092 | /* | |
2093 | * We need 1 CCW block for each read buffer, 1 for each | |
2094 | * write buffer, plus 1 for ClawSignalBlock | |
2095 | */ | |
2096 | ccw_blocks_required = | |
2097 | privptr->p_env->read_buffers+privptr->p_env->write_buffers+1; | |
2098 | #ifdef DEBUGMSG | |
2099 | printk(KERN_INFO "%s: %s() " | |
2100 | "ccw_blocks_required=%d\n", | |
2101 | dev->name,__FUNCTION__, | |
2102 | ccw_blocks_required); | |
2103 | printk(KERN_INFO "%s: %s() " | |
2104 | "PAGE_SIZE=0x%x\n", | |
2105 | dev->name,__FUNCTION__, | |
2106 | (unsigned int)PAGE_SIZE); | |
2107 | printk(KERN_INFO "%s: %s() > " | |
2108 | "PAGE_MASK=0x%x\n", | |
2109 | dev->name,__FUNCTION__, | |
2110 | (unsigned int)PAGE_MASK); | |
2111 | #endif | |
2112 | /* | |
2113 | * compute number of CCW blocks that will fit in a page | |
2114 | */ | |
2115 | ccw_blocks_perpage= PAGE_SIZE / CCWBK_SIZE; | |
2116 | ccw_pages_required= | |
2117 | (ccw_blocks_required+ccw_blocks_perpage -1) / | |
2118 | ccw_blocks_perpage; | |
2119 | ||
2120 | #ifdef DEBUGMSG | |
2121 | printk(KERN_INFO "%s: %s() > ccw_blocks_perpage=%d\n", | |
2122 | dev->name,__FUNCTION__, | |
2123 | ccw_blocks_perpage); | |
2124 | printk(KERN_INFO "%s: %s() > ccw_pages_required=%d\n", | |
2125 | dev->name,__FUNCTION__, | |
2126 | ccw_pages_required); | |
2127 | #endif | |
2128 | /* | |
2129 | * read and write sizes are set by 2 constants in claw.h | |
2130 | * 4k and 32k. Unpacked values other than 4k are not going to | |
2131 | * provide good performance. With packing buffers support 32k | |
2132 | * buffers are used. | |
2133 | */ | |
2134 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
2135 | claw_reads_perpage= PAGE_SIZE / privptr->p_env->read_size; | |
2136 | claw_read_pages= (privptr->p_env->read_buffers + | |
2137 | claw_reads_perpage -1) / claw_reads_perpage; | |
2138 | } | |
2139 | else { /* > or equal */ | |
2140 | privptr->p_buff_pages_perread= | |
2141 | (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE; | |
2142 | claw_read_pages= | |
2143 | privptr->p_env->read_buffers * privptr->p_buff_pages_perread; | |
2144 | } | |
2145 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
2146 | claw_writes_perpage= | |
2147 | PAGE_SIZE / privptr->p_env->write_size; | |
2148 | claw_write_pages= | |
2149 | (privptr->p_env->write_buffers + claw_writes_perpage -1) / | |
2150 | claw_writes_perpage; | |
2151 | ||
2152 | } | |
2153 | else { /* > or equal */ | |
2154 | privptr->p_buff_pages_perwrite= | |
2155 | (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE; | |
2156 | claw_write_pages= | |
2157 | privptr->p_env->write_buffers * privptr->p_buff_pages_perwrite; | |
2158 | } | |
2159 | #ifdef DEBUGMSG | |
2160 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
2161 | printk(KERN_INFO "%s: %s() reads_perpage=%d\n", | |
2162 | dev->name,__FUNCTION__, | |
2163 | claw_reads_perpage); | |
2164 | } | |
2165 | else { | |
2166 | printk(KERN_INFO "%s: %s() pages_perread=%d\n", | |
2167 | dev->name,__FUNCTION__, | |
2168 | privptr->p_buff_pages_perread); | |
2169 | } | |
2170 | printk(KERN_INFO "%s: %s() read_pages=%d\n", | |
2171 | dev->name,__FUNCTION__, | |
2172 | claw_read_pages); | |
2173 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
2174 | printk(KERN_INFO "%s: %s() writes_perpage=%d\n", | |
2175 | dev->name,__FUNCTION__, | |
2176 | claw_writes_perpage); | |
2177 | } | |
2178 | else { | |
2179 | printk(KERN_INFO "%s: %s() pages_perwrite=%d\n", | |
2180 | dev->name,__FUNCTION__, | |
2181 | privptr->p_buff_pages_perwrite); | |
2182 | } | |
2183 | printk(KERN_INFO "%s: %s() write_pages=%d\n", | |
2184 | dev->name,__FUNCTION__, | |
2185 | claw_write_pages); | |
2186 | #endif | |
2187 | ||
2188 | ||
2189 | /* | |
2190 | * allocate ccw_pages_required | |
2191 | */ | |
2192 | if (privptr->p_buff_ccw==NULL) { | |
2193 | privptr->p_buff_ccw= | |
2194 | (void *)__get_free_pages(__GFP_DMA, | |
2195 | (int)pages_to_order_of_mag(ccw_pages_required )); | |
2196 | if (privptr->p_buff_ccw==NULL) { | |
2197 | printk(KERN_INFO "%s: %s() " | |
2198 | "__get_free_pages for CCWs failed : " | |
2199 | "pages is %d\n", | |
2200 | dev->name,__FUNCTION__, | |
2201 | ccw_pages_required ); | |
2202 | #ifdef FUNCTRACE | |
2203 | printk(KERN_INFO "%s: %s() > " | |
2204 | "exit on line %d, rc = ENOMEM\n", | |
2205 | dev->name,__FUNCTION__, | |
2206 | __LINE__); | |
2207 | #endif | |
2208 | return -ENOMEM; | |
2209 | } | |
2210 | privptr->p_buff_ccw_num=ccw_pages_required; | |
2211 | } | |
2212 | memset(privptr->p_buff_ccw, 0x00, | |
2213 | privptr->p_buff_ccw_num * PAGE_SIZE); | |
2214 | ||
2215 | /* | |
2216 | * obtain ending ccw block address | |
2217 | * | |
2218 | */ | |
2219 | privptr->p_end_ccw = (struct endccw *)&privptr->end_ccw; | |
2220 | real_address = (__u32)__pa(privptr->p_end_ccw); | |
2221 | /* Initialize ending CCW block */ | |
2222 | #ifdef DEBUGMSG | |
2223 | printk(KERN_INFO "%s: %s() begin initialize ending CCW blocks\n", | |
2224 | dev->name,__FUNCTION__); | |
2225 | #endif | |
2226 | ||
2227 | p_endccw=privptr->p_end_ccw; | |
2228 | p_endccw->real=real_address; | |
2229 | p_endccw->write1=0x00; | |
2230 | p_endccw->read1=0x00; | |
2231 | ||
2232 | /* write1_nop1 */ | |
2233 | p_endccw->write1_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
2234 | p_endccw->write1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2235 | p_endccw->write1_nop1.count = 1; | |
2236 | p_endccw->write1_nop1.cda = 0; | |
2237 | ||
2238 | /* write1_nop2 */ | |
2239 | p_endccw->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
2240 | p_endccw->write1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
2241 | p_endccw->write1_nop2.count = 1; | |
2242 | p_endccw->write1_nop2.cda = 0; | |
2243 | ||
2244 | /* write2_nop1 */ | |
2245 | p_endccw->write2_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
2246 | p_endccw->write2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2247 | p_endccw->write2_nop1.count = 1; | |
2248 | p_endccw->write2_nop1.cda = 0; | |
2249 | ||
2250 | /* write2_nop2 */ | |
2251 | p_endccw->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
2252 | p_endccw->write2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
2253 | p_endccw->write2_nop2.count = 1; | |
2254 | p_endccw->write2_nop2.cda = 0; | |
2255 | ||
2256 | /* read1_nop1 */ | |
2257 | p_endccw->read1_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
2258 | p_endccw->read1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2259 | p_endccw->read1_nop1.count = 1; | |
2260 | p_endccw->read1_nop1.cda = 0; | |
2261 | ||
2262 | /* read1_nop2 */ | |
2263 | p_endccw->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
2264 | p_endccw->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
2265 | p_endccw->read1_nop2.count = 1; | |
2266 | p_endccw->read1_nop2.cda = 0; | |
2267 | ||
2268 | /* read2_nop1 */ | |
2269 | p_endccw->read2_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
2270 | p_endccw->read2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2271 | p_endccw->read2_nop1.count = 1; | |
2272 | p_endccw->read2_nop1.cda = 0; | |
2273 | ||
2274 | /* read2_nop2 */ | |
2275 | p_endccw->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
2276 | p_endccw->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
2277 | p_endccw->read2_nop2.count = 1; | |
2278 | p_endccw->read2_nop2.cda = 0; | |
2279 | ||
2280 | #ifdef IOTRACE | |
2281 | printk(KERN_INFO "%s: %s() dump claw ending CCW BK \n", | |
2282 | dev->name,__FUNCTION__); | |
2283 | dumpit((char *)p_endccw, sizeof(struct endccw)); | |
2284 | #endif | |
2285 | ||
2286 | /* | |
2287 | * Build a chain of CCWs | |
2288 | * | |
2289 | */ | |
2290 | ||
2291 | #ifdef DEBUGMSG | |
2292 | printk(KERN_INFO "%s: %s() Begin build a chain of CCW buffer \n", | |
2293 | dev->name,__FUNCTION__); | |
2294 | #endif | |
2295 | p_buff=privptr->p_buff_ccw; | |
2296 | ||
2297 | p_free_chain=NULL; | |
2298 | for (i=0 ; i < ccw_pages_required; i++ ) { | |
2299 | real_address = (__u32)__pa(p_buff); | |
2300 | p_buf=p_buff; | |
2301 | for (j=0 ; j < ccw_blocks_perpage ; j++) { | |
2302 | p_buf->next = p_free_chain; | |
2303 | p_free_chain = p_buf; | |
2304 | p_buf->real=(__u32)__pa(p_buf); | |
2305 | ++p_buf; | |
2306 | } | |
2307 | p_buff+=PAGE_SIZE; | |
2308 | } | |
2309 | #ifdef DEBUGMSG | |
2310 | printk(KERN_INFO "%s: %s() " | |
2311 | "End build a chain of CCW buffer \n", | |
2312 | dev->name,__FUNCTION__); | |
2313 | p_buf=p_free_chain; | |
2314 | while (p_buf!=NULL) { | |
2315 | dumpit((char *)p_buf, sizeof(struct ccwbk)); | |
2316 | p_buf=p_buf->next; | |
2317 | } | |
2318 | #endif | |
2319 | ||
2320 | /* | |
2321 | * Initialize ClawSignalBlock | |
2322 | * | |
2323 | */ | |
2324 | #ifdef DEBUGMSG | |
2325 | printk(KERN_INFO "%s: %s() " | |
2326 | "Begin initialize ClawSignalBlock \n", | |
2327 | dev->name,__FUNCTION__); | |
2328 | #endif | |
2329 | if (privptr->p_claw_signal_blk==NULL) { | |
2330 | privptr->p_claw_signal_blk=p_free_chain; | |
2331 | p_free_chain=p_free_chain->next; | |
2332 | pClawH=(struct clawh *)privptr->p_claw_signal_blk; | |
2333 | pClawH->length=0xffff; | |
2334 | pClawH->opcode=0xff; | |
2335 | pClawH->flag=CLAW_BUSY; | |
2336 | } | |
2337 | #ifdef DEBUGMSG | |
2338 | printk(KERN_INFO "%s: %s() > End initialize " | |
2339 | "ClawSignalBlock\n", | |
2340 | dev->name,__FUNCTION__); | |
2341 | dumpit((char *)privptr->p_claw_signal_blk, sizeof(struct ccwbk)); | |
2342 | #endif | |
2343 | ||
2344 | /* | |
2345 | * allocate write_pages_required and add to free chain | |
2346 | */ | |
2347 | if (privptr->p_buff_write==NULL) { | |
2348 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
2349 | privptr->p_buff_write= | |
2350 | (void *)__get_free_pages(__GFP_DMA, | |
2351 | (int)pages_to_order_of_mag(claw_write_pages )); | |
2352 | if (privptr->p_buff_write==NULL) { | |
2353 | printk(KERN_INFO "%s: %s() __get_free_pages for write" | |
2354 | " bufs failed : get is for %d pages\n", | |
2355 | dev->name,__FUNCTION__,claw_write_pages ); | |
2356 | free_pages((unsigned long)privptr->p_buff_ccw, | |
2357 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
2358 | privptr->p_buff_ccw=NULL; | |
2359 | #ifdef FUNCTRACE | |
2360 | printk(KERN_INFO "%s: %s() > exit on line %d," | |
2361 | "rc = ENOMEM\n", | |
2362 | dev->name,__FUNCTION__,__LINE__); | |
2363 | #endif | |
2364 | return -ENOMEM; | |
2365 | } | |
2366 | /* | |
2367 | * Build CLAW write free chain | |
2368 | * | |
2369 | */ | |
2370 | ||
2371 | memset(privptr->p_buff_write, 0x00, | |
2372 | ccw_pages_required * PAGE_SIZE); | |
2373 | #ifdef DEBUGMSG | |
2374 | printk(KERN_INFO "%s: %s() Begin build claw write free " | |
2375 | "chain \n",dev->name,__FUNCTION__); | |
2376 | #endif | |
2377 | privptr->p_write_free_chain=NULL; | |
2378 | ||
2379 | p_buff=privptr->p_buff_write; | |
2380 | ||
2381 | for (i=0 ; i< privptr->p_env->write_buffers ; i++) { | |
2382 | p_buf = p_free_chain; /* get a CCW */ | |
2383 | p_free_chain = p_buf->next; | |
2384 | p_buf->next =privptr->p_write_free_chain; | |
2385 | privptr->p_write_free_chain = p_buf; | |
2386 | p_buf-> p_buffer = (struct clawbuf *)p_buff; | |
2387 | p_buf-> write.cda = (__u32)__pa(p_buff); | |
2388 | p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2389 | p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
2390 | p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2391 | p_buf-> w_read_FF.count = 1; | |
2392 | p_buf-> w_read_FF.cda = | |
2393 | (__u32)__pa(&p_buf-> header.flag); | |
2394 | p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
2395 | p_buf-> w_TIC_1.flags = 0; | |
2396 | p_buf-> w_TIC_1.count = 0; | |
2397 | ||
2398 | if (((unsigned long)p_buff+privptr->p_env->write_size) >= | |
2399 | ((unsigned long)(p_buff+2* | |
2400 | (privptr->p_env->write_size) -1) & PAGE_MASK)) { | |
2401 | p_buff= p_buff+privptr->p_env->write_size; | |
2402 | } | |
2403 | } | |
2404 | } | |
2405 | else /* Buffers are => PAGE_SIZE. 1 buff per get_free_pages */ | |
2406 | { | |
2407 | privptr->p_write_free_chain=NULL; | |
2408 | for (i = 0; i< privptr->p_env->write_buffers ; i++) { | |
2409 | p_buff=(void *)__get_free_pages(__GFP_DMA, | |
2410 | (int)pages_to_order_of_mag( | |
2411 | privptr->p_buff_pages_perwrite) ); | |
2412 | #ifdef IOTRACE | |
2413 | printk(KERN_INFO "%s:%s __get_free_pages " | |
2414 | "for writes buf: get for %d pages\n", | |
2415 | dev->name,__FUNCTION__, | |
2416 | privptr->p_buff_pages_perwrite); | |
2417 | #endif | |
2418 | if (p_buff==NULL) { | |
2419 | printk(KERN_INFO "%s:%s __get_free_pages" | |
2420 | "for writes buf failed : get is for %d pages\n", | |
2421 | dev->name, | |
2422 | __FUNCTION__, | |
2423 | privptr->p_buff_pages_perwrite ); | |
2424 | free_pages((unsigned long)privptr->p_buff_ccw, | |
2425 | (int)pages_to_order_of_mag( | |
2426 | privptr->p_buff_ccw_num)); | |
2427 | privptr->p_buff_ccw=NULL; | |
2428 | p_buf=privptr->p_buff_write; | |
2429 | while (p_buf!=NULL) { | |
2430 | free_pages((unsigned long) | |
2431 | p_buf->p_buffer, | |
2432 | (int)pages_to_order_of_mag( | |
2433 | privptr->p_buff_pages_perwrite)); | |
2434 | p_buf=p_buf->next; | |
2435 | } | |
2436 | #ifdef FUNCTRACE | |
2437 | printk(KERN_INFO "%s: %s exit on line %d, rc = ENOMEM\n", | |
2438 | dev->name, | |
2439 | __FUNCTION__, | |
2440 | __LINE__); | |
2441 | #endif | |
2442 | return -ENOMEM; | |
2443 | } /* Error on get_pages */ | |
2444 | memset(p_buff, 0x00, privptr->p_env->write_size ); | |
2445 | p_buf = p_free_chain; | |
2446 | p_free_chain = p_buf->next; | |
2447 | p_buf->next = privptr->p_write_free_chain; | |
2448 | privptr->p_write_free_chain = p_buf; | |
2449 | privptr->p_buff_write = p_buf; | |
2450 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
2451 | p_buf-> write.cda = (__u32)__pa(p_buff); | |
2452 | p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2453 | p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
2454 | p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2455 | p_buf-> w_read_FF.count = 1; | |
2456 | p_buf-> w_read_FF.cda = | |
2457 | (__u32)__pa(&p_buf-> header.flag); | |
2458 | p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
2459 | p_buf-> w_TIC_1.flags = 0; | |
2460 | p_buf-> w_TIC_1.count = 0; | |
2461 | } /* for all write_buffers */ | |
2462 | ||
2463 | } /* else buffers are PAGE_SIZE or bigger */ | |
2464 | ||
2465 | } | |
2466 | privptr->p_buff_write_num=claw_write_pages; | |
2467 | privptr->write_free_count=privptr->p_env->write_buffers; | |
2468 | ||
2469 | ||
2470 | #ifdef DEBUGMSG | |
2471 | printk(KERN_INFO "%s:%s End build claw write free chain \n", | |
2472 | dev->name,__FUNCTION__); | |
2473 | p_buf=privptr->p_write_free_chain; | |
2474 | while (p_buf!=NULL) { | |
2475 | dumpit((char *)p_buf, sizeof(struct ccwbk)); | |
2476 | p_buf=p_buf->next; | |
2477 | } | |
2478 | #endif | |
2479 | /* | |
2480 | * allocate read_pages_required and chain to free chain | |
2481 | */ | |
2482 | if (privptr->p_buff_read==NULL) { | |
2483 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
2484 | privptr->p_buff_read= | |
2485 | (void *)__get_free_pages(__GFP_DMA, | |
2486 | (int)pages_to_order_of_mag(claw_read_pages) ); | |
2487 | if (privptr->p_buff_read==NULL) { | |
2488 | printk(KERN_INFO "%s: %s() " | |
2489 | "__get_free_pages for read buf failed : " | |
2490 | "get is for %d pages\n", | |
2491 | dev->name,__FUNCTION__,claw_read_pages ); | |
2492 | free_pages((unsigned long)privptr->p_buff_ccw, | |
2493 | (int)pages_to_order_of_mag( | |
2494 | privptr->p_buff_ccw_num)); | |
2495 | /* free the write pages size is < page size */ | |
2496 | free_pages((unsigned long)privptr->p_buff_write, | |
2497 | (int)pages_to_order_of_mag( | |
2498 | privptr->p_buff_write_num)); | |
2499 | privptr->p_buff_ccw=NULL; | |
2500 | privptr->p_buff_write=NULL; | |
2501 | #ifdef FUNCTRACE | |
2502 | printk(KERN_INFO "%s: %s() > exit on line %d, rc =" | |
2503 | " ENOMEM\n",dev->name,__FUNCTION__,__LINE__); | |
2504 | #endif | |
2505 | return -ENOMEM; | |
2506 | } | |
2507 | memset(privptr->p_buff_read, 0x00, claw_read_pages * PAGE_SIZE); | |
2508 | privptr->p_buff_read_num=claw_read_pages; | |
2509 | /* | |
2510 | * Build CLAW read free chain | |
2511 | * | |
2512 | */ | |
2513 | #ifdef DEBUGMSG | |
2514 | printk(KERN_INFO "%s: %s() Begin build claw read free chain \n", | |
2515 | dev->name,__FUNCTION__); | |
2516 | #endif | |
2517 | p_buff=privptr->p_buff_read; | |
2518 | for (i=0 ; i< privptr->p_env->read_buffers ; i++) { | |
2519 | p_buf = p_free_chain; | |
2520 | p_free_chain = p_buf->next; | |
2521 | ||
2522 | if (p_last_CCWB==NULL) { | |
2523 | p_buf->next=NULL; | |
2524 | real_TIC_address=0; | |
2525 | p_last_CCWB=p_buf; | |
2526 | } | |
2527 | else { | |
2528 | p_buf->next=p_first_CCWB; | |
2529 | real_TIC_address= | |
2530 | (__u32)__pa(&p_first_CCWB -> read ); | |
2531 | } | |
2532 | ||
2533 | p_first_CCWB=p_buf; | |
2534 | ||
2535 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
2536 | /* initialize read command */ | |
2537 | p_buf-> read.cmd_code = CCW_CLAW_CMD_READ; | |
2538 | p_buf-> read.cda = (__u32)__pa(p_buff); | |
2539 | p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2540 | p_buf-> read.count = privptr->p_env->read_size; | |
2541 | ||
2542 | /* initialize read_h command */ | |
2543 | p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER; | |
2544 | p_buf-> read_h.cda = | |
2545 | (__u32)__pa(&(p_buf->header)); | |
2546 | p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2547 | p_buf-> read_h.count = sizeof(struct clawh); | |
2548 | ||
2549 | /* initialize Signal command */ | |
2550 | p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD; | |
2551 | p_buf-> signal.cda = | |
2552 | (__u32)__pa(&(pClawH->flag)); | |
2553 | p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2554 | p_buf-> signal.count = 1; | |
2555 | ||
2556 | /* initialize r_TIC_1 command */ | |
2557 | p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
2558 | p_buf-> r_TIC_1.cda = (__u32)real_TIC_address; | |
2559 | p_buf-> r_TIC_1.flags = 0; | |
2560 | p_buf-> r_TIC_1.count = 0; | |
2561 | ||
2562 | /* initialize r_read_FF command */ | |
2563 | p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
2564 | p_buf-> r_read_FF.cda = | |
2565 | (__u32)__pa(&(pClawH->flag)); | |
2566 | p_buf-> r_read_FF.flags = | |
2567 | CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI; | |
2568 | p_buf-> r_read_FF.count = 1; | |
2569 | ||
2570 | /* initialize r_TIC_2 */ | |
2571 | memcpy(&p_buf->r_TIC_2, | |
2572 | &p_buf->r_TIC_1, sizeof(struct ccw1)); | |
2573 | ||
2574 | /* initialize Header */ | |
2575 | p_buf->header.length=0xffff; | |
2576 | p_buf->header.opcode=0xff; | |
2577 | p_buf->header.flag=CLAW_PENDING; | |
2578 | ||
2579 | if (((unsigned long)p_buff+privptr->p_env->read_size) >= | |
2580 | ((unsigned long)(p_buff+2*(privptr->p_env->read_size) -1) | |
2581 | & PAGE_MASK) ) { | |
2582 | p_buff= p_buff+privptr->p_env->read_size; | |
2583 | } | |
2584 | else { | |
2585 | p_buff= | |
2586 | (void *)((unsigned long) | |
2587 | (p_buff+2*(privptr->p_env->read_size) -1) | |
2588 | & PAGE_MASK) ; | |
2589 | } | |
2590 | } /* for read_buffers */ | |
2591 | } /* read_size < PAGE_SIZE */ | |
2592 | else { /* read Size >= PAGE_SIZE */ | |
2593 | ||
2594 | #ifdef DEBUGMSG | |
2595 | printk(KERN_INFO "%s: %s() Begin build claw read free chain \n", | |
2596 | dev->name,__FUNCTION__); | |
2597 | #endif | |
2598 | for (i=0 ; i< privptr->p_env->read_buffers ; i++) { | |
2599 | p_buff = (void *)__get_free_pages(__GFP_DMA, | |
2600 | (int)pages_to_order_of_mag(privptr->p_buff_pages_perread) ); | |
2601 | if (p_buff==NULL) { | |
2602 | printk(KERN_INFO "%s: %s() __get_free_pages for read " | |
2603 | "buf failed : get is for %d pages\n", | |
2604 | dev->name,__FUNCTION__, | |
2605 | privptr->p_buff_pages_perread ); | |
2606 | free_pages((unsigned long)privptr->p_buff_ccw, | |
2607 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
2608 | /* free the write pages */ | |
2609 | p_buf=privptr->p_buff_write; | |
2610 | while (p_buf!=NULL) { | |
2611 | free_pages((unsigned long)p_buf->p_buffer, | |
2612 | (int)pages_to_order_of_mag( | |
2613 | privptr->p_buff_pages_perwrite )); | |
2614 | p_buf=p_buf->next; | |
2615 | } | |
2616 | /* free any read pages already alloc */ | |
2617 | p_buf=privptr->p_buff_read; | |
2618 | while (p_buf!=NULL) { | |
2619 | free_pages((unsigned long)p_buf->p_buffer, | |
2620 | (int)pages_to_order_of_mag( | |
2621 | privptr->p_buff_pages_perread )); | |
2622 | p_buf=p_buf->next; | |
2623 | } | |
2624 | privptr->p_buff_ccw=NULL; | |
2625 | privptr->p_buff_write=NULL; | |
2626 | #ifdef FUNCTRACE | |
2627 | printk(KERN_INFO "%s: %s() exit on line %d, rc = ENOMEM\n", | |
2628 | dev->name,__FUNCTION__, | |
2629 | __LINE__); | |
2630 | #endif | |
2631 | return -ENOMEM; | |
2632 | } | |
2633 | memset(p_buff, 0x00, privptr->p_env->read_size); | |
2634 | p_buf = p_free_chain; | |
2635 | privptr->p_buff_read = p_buf; | |
2636 | p_free_chain = p_buf->next; | |
2637 | ||
2638 | if (p_last_CCWB==NULL) { | |
2639 | p_buf->next=NULL; | |
2640 | real_TIC_address=0; | |
2641 | p_last_CCWB=p_buf; | |
2642 | } | |
2643 | else { | |
2644 | p_buf->next=p_first_CCWB; | |
2645 | real_TIC_address= | |
2646 | (addr_t)__pa( | |
2647 | &p_first_CCWB -> read ); | |
2648 | } | |
2649 | ||
2650 | p_first_CCWB=p_buf; | |
2651 | /* save buff address */ | |
2652 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
2653 | /* initialize read command */ | |
2654 | p_buf-> read.cmd_code = CCW_CLAW_CMD_READ; | |
2655 | p_buf-> read.cda = (__u32)__pa(p_buff); | |
2656 | p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2657 | p_buf-> read.count = privptr->p_env->read_size; | |
2658 | ||
2659 | /* initialize read_h command */ | |
2660 | p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER; | |
2661 | p_buf-> read_h.cda = | |
2662 | (__u32)__pa(&(p_buf->header)); | |
2663 | p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2664 | p_buf-> read_h.count = sizeof(struct clawh); | |
2665 | ||
2666 | /* initialize Signal command */ | |
2667 | p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD; | |
2668 | p_buf-> signal.cda = | |
2669 | (__u32)__pa(&(pClawH->flag)); | |
2670 | p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
2671 | p_buf-> signal.count = 1; | |
2672 | ||
2673 | /* initialize r_TIC_1 command */ | |
2674 | p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
2675 | p_buf-> r_TIC_1.cda = (__u32)real_TIC_address; | |
2676 | p_buf-> r_TIC_1.flags = 0; | |
2677 | p_buf-> r_TIC_1.count = 0; | |
2678 | ||
2679 | /* initialize r_read_FF command */ | |
2680 | p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
2681 | p_buf-> r_read_FF.cda = | |
2682 | (__u32)__pa(&(pClawH->flag)); | |
2683 | p_buf-> r_read_FF.flags = | |
2684 | CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI; | |
2685 | p_buf-> r_read_FF.count = 1; | |
2686 | ||
2687 | /* initialize r_TIC_2 */ | |
2688 | memcpy(&p_buf->r_TIC_2, &p_buf->r_TIC_1, | |
2689 | sizeof(struct ccw1)); | |
2690 | ||
2691 | /* initialize Header */ | |
2692 | p_buf->header.length=0xffff; | |
2693 | p_buf->header.opcode=0xff; | |
2694 | p_buf->header.flag=CLAW_PENDING; | |
2695 | ||
2696 | } /* For read_buffers */ | |
2697 | } /* read_size >= PAGE_SIZE */ | |
2698 | } /* pBuffread = NULL */ | |
2699 | #ifdef DEBUGMSG | |
2700 | printk(KERN_INFO "%s: %s() > End build claw read free chain \n", | |
2701 | dev->name,__FUNCTION__); | |
2702 | p_buf=p_first_CCWB; | |
2703 | while (p_buf!=NULL) { | |
2704 | dumpit((char *)p_buf, sizeof(struct ccwbk)); | |
2705 | p_buf=p_buf->next; | |
2706 | } | |
2707 | ||
2708 | #endif | |
2709 | add_claw_reads( dev ,p_first_CCWB , p_last_CCWB); | |
2710 | privptr->buffs_alloc = 1; | |
2711 | #ifdef FUNCTRACE | |
2712 | printk(KERN_INFO "%s: %s() exit on line %d\n", | |
2713 | dev->name,__FUNCTION__,__LINE__); | |
2714 | #endif | |
2715 | return 0; | |
2716 | } /* end of init_ccw_bk */ | |
2717 | ||
2718 | /*-------------------------------------------------------------------* | |
2719 | * * | |
2720 | * probe_error * | |
2721 | * * | |
2722 | *--------------------------------------------------------------------*/ | |
2723 | ||
2724 | static void | |
2725 | probe_error( struct ccwgroup_device *cgdev) | |
2726 | { | |
2727 | struct claw_privbk *privptr; | |
2728 | #ifdef FUNCTRACE | |
2729 | printk(KERN_INFO "%s enter \n",__FUNCTION__); | |
2730 | #endif | |
2731 | CLAW_DBF_TEXT(4,trace,"proberr"); | |
2732 | #ifdef DEBUGMSG | |
2733 | printk(KERN_INFO "%s variable cgdev =\n",__FUNCTION__); | |
2734 | dumpit((char *) cgdev, sizeof(struct ccwgroup_device)); | |
2735 | #endif | |
2736 | privptr=(struct claw_privbk *)cgdev->dev.driver_data; | |
2737 | if (privptr!=NULL) { | |
17fd682e JJ |
2738 | kfree(privptr->p_env); |
2739 | privptr->p_env=NULL; | |
2740 | kfree(privptr->p_mtc_envelope); | |
2741 | privptr->p_mtc_envelope=NULL; | |
1da177e4 LT |
2742 | kfree(privptr); |
2743 | privptr=NULL; | |
2744 | } | |
2745 | #ifdef FUNCTRACE | |
2746 | printk(KERN_INFO "%s > exit on line %d\n", | |
2747 | __FUNCTION__,__LINE__); | |
2748 | #endif | |
2749 | ||
2750 | return; | |
2751 | } /* probe_error */ | |
2752 | ||
2753 | ||
2754 | ||
2755 | /*-------------------------------------------------------------------* | |
2756 | * claw_process_control * | |
2757 | * * | |
2758 | * * | |
2759 | *--------------------------------------------------------------------*/ | |
2760 | ||
2761 | static int | |
2762 | claw_process_control( struct net_device *dev, struct ccwbk * p_ccw) | |
2763 | { | |
2764 | ||
2765 | struct clawbuf *p_buf; | |
2766 | struct clawctl ctlbk; | |
2767 | struct clawctl *p_ctlbk; | |
2768 | char temp_host_name[8]; | |
2769 | char temp_ws_name[8]; | |
2770 | struct claw_privbk *privptr; | |
2771 | struct claw_env *p_env; | |
2772 | struct sysval *p_sysval; | |
2773 | struct conncmd *p_connect=NULL; | |
2774 | int rc; | |
2775 | struct chbk *p_ch = NULL; | |
2776 | #ifdef FUNCTRACE | |
2777 | printk(KERN_INFO "%s: %s() > enter \n", | |
2778 | dev->name,__FUNCTION__); | |
2779 | #endif | |
2780 | CLAW_DBF_TEXT(2,setup,"clw_cntl"); | |
2781 | #ifdef DEBUGMSG | |
2782 | printk(KERN_INFO "%s: variable dev =\n",dev->name); | |
2783 | dumpit((char *) dev, sizeof(struct net_device)); | |
2784 | printk(KERN_INFO "%s: variable p_ccw =\n",dev->name); | |
2785 | dumpit((char *) p_ccw, sizeof(struct ccwbk *)); | |
2786 | #endif | |
2787 | udelay(1000); /* Wait a ms for the control packets to | |
2788 | *catch up to each other */ | |
2789 | privptr=dev->priv; | |
2790 | p_env=privptr->p_env; | |
2791 | memcpy( &temp_host_name, p_env->host_name, 8); | |
2792 | memcpy( &temp_ws_name, p_env->adapter_name , 8); | |
2793 | printk(KERN_INFO "%s: CLAW device %.8s: " | |
2794 | "Received Control Packet\n", | |
2795 | dev->name, temp_ws_name); | |
2796 | if (privptr->release_pend==1) { | |
2797 | #ifdef FUNCTRACE | |
2798 | printk(KERN_INFO "%s: %s() > " | |
2799 | "exit on line %d, rc=0\n", | |
2800 | dev->name,__FUNCTION__,__LINE__); | |
2801 | #endif | |
2802 | return 0; | |
2803 | } | |
2804 | p_buf=p_ccw->p_buffer; | |
2805 | p_ctlbk=&ctlbk; | |
2806 | if (p_env->packing == DO_PACKED) { /* packing in progress?*/ | |
2807 | memcpy(p_ctlbk, &p_buf->buffer[4], sizeof(struct clawctl)); | |
2808 | } else { | |
2809 | memcpy(p_ctlbk, p_buf, sizeof(struct clawctl)); | |
2810 | } | |
2811 | #ifdef IOTRACE | |
2812 | printk(KERN_INFO "%s: dump claw control data inbound\n",dev->name); | |
2813 | dumpit((char *)p_ctlbk, sizeof(struct clawctl)); | |
2814 | #endif | |
2815 | switch (p_ctlbk->command) | |
2816 | { | |
2817 | case SYSTEM_VALIDATE_REQUEST: | |
2818 | if (p_ctlbk->version!=CLAW_VERSION_ID) { | |
2819 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2820 | CLAW_RC_WRONG_VERSION ); | |
2821 | printk("%s: %d is wrong version id. " | |
2822 | "Expected %d\n", | |
2823 | dev->name, p_ctlbk->version, | |
2824 | CLAW_VERSION_ID); | |
2825 | } | |
2826 | p_sysval=(struct sysval *)&(p_ctlbk->data); | |
2827 | printk( "%s: Recv Sys Validate Request: " | |
2828 | "Vers=%d,link_id=%d,Corr=%d,WS name=%." | |
2829 | "8s,Host name=%.8s\n", | |
2830 | dev->name, p_ctlbk->version, | |
2831 | p_ctlbk->linkid, | |
2832 | p_ctlbk->correlator, | |
2833 | p_sysval->WS_name, | |
2834 | p_sysval->host_name); | |
2835 | if (0!=memcmp(temp_host_name,p_sysval->host_name,8)) { | |
2836 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2837 | CLAW_RC_NAME_MISMATCH ); | |
2838 | CLAW_DBF_TEXT(2,setup,"HSTBAD"); | |
2839 | CLAW_DBF_TEXT_(2,setup,"%s",p_sysval->host_name); | |
2840 | CLAW_DBF_TEXT_(2,setup,"%s",temp_host_name); | |
2841 | printk(KERN_INFO "%s: Host name mismatch\n", | |
2842 | dev->name); | |
2843 | printk(KERN_INFO "%s: Received :%s: " | |
2844 | "expected :%s: \n", | |
2845 | dev->name, | |
2846 | p_sysval->host_name, | |
2847 | temp_host_name); | |
2848 | } | |
2849 | if (0!=memcmp(temp_ws_name,p_sysval->WS_name,8)) { | |
2850 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2851 | CLAW_RC_NAME_MISMATCH ); | |
2852 | CLAW_DBF_TEXT(2,setup,"WSNBAD"); | |
2853 | CLAW_DBF_TEXT_(2,setup,"%s",p_sysval->WS_name); | |
2854 | CLAW_DBF_TEXT_(2,setup,"%s",temp_ws_name); | |
2855 | printk(KERN_INFO "%s: WS name mismatch\n", | |
2856 | dev->name); | |
2857 | printk(KERN_INFO "%s: Received :%s: " | |
2858 | "expected :%s: \n", | |
2859 | dev->name, | |
2860 | p_sysval->WS_name, | |
2861 | temp_ws_name); | |
2862 | } | |
2863 | if (( p_sysval->write_frame_size < p_env->write_size) && | |
2864 | ( p_env->packing == 0)) { | |
2865 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2866 | CLAW_RC_HOST_RCV_TOO_SMALL ); | |
2867 | printk(KERN_INFO "%s: host write size is too " | |
2868 | "small\n", dev->name); | |
2869 | CLAW_DBF_TEXT(2,setup,"wrtszbad"); | |
2870 | } | |
2871 | if (( p_sysval->read_frame_size < p_env->read_size) && | |
2872 | ( p_env->packing == 0)) { | |
2873 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2874 | CLAW_RC_HOST_RCV_TOO_SMALL ); | |
2875 | printk(KERN_INFO "%s: host read size is too " | |
2876 | "small\n", dev->name); | |
2877 | CLAW_DBF_TEXT(2,setup,"rdsizbad"); | |
2878 | } | |
2879 | claw_snd_sys_validate_rsp(dev, p_ctlbk, 0 ); | |
2880 | printk("%s: CLAW device %.8s: System validate" | |
2881 | " completed.\n",dev->name, temp_ws_name); | |
2882 | printk("%s: sys Validate Rsize:%d Wsize:%d\n",dev->name, | |
2883 | p_sysval->read_frame_size,p_sysval->write_frame_size); | |
2884 | privptr->system_validate_comp=1; | |
2885 | if(strncmp(p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
2886 | p_env->packing = PACKING_ASK; | |
2887 | } | |
2888 | claw_strt_conn_req(dev); | |
2889 | break; | |
2890 | ||
2891 | case SYSTEM_VALIDATE_RESPONSE: | |
2892 | p_sysval=(struct sysval *)&(p_ctlbk->data); | |
2893 | printk("%s: Recv Sys Validate Resp: Vers=%d,Corr=%d,RC=%d," | |
2894 | "WS name=%.8s,Host name=%.8s\n", | |
2895 | dev->name, | |
2896 | p_ctlbk->version, | |
2897 | p_ctlbk->correlator, | |
2898 | p_ctlbk->rc, | |
2899 | p_sysval->WS_name, | |
2900 | p_sysval->host_name); | |
2901 | switch (p_ctlbk->rc) | |
2902 | { | |
2903 | case 0: | |
2904 | printk(KERN_INFO "%s: CLAW device " | |
2905 | "%.8s: System validate " | |
2906 | "completed.\n", | |
2907 | dev->name, temp_ws_name); | |
2908 | if (privptr->system_validate_comp == 0) | |
2909 | claw_strt_conn_req(dev); | |
2910 | privptr->system_validate_comp=1; | |
2911 | break; | |
2912 | case CLAW_RC_NAME_MISMATCH: | |
2913 | printk(KERN_INFO "%s: Sys Validate " | |
2914 | "Resp : Host, WS name is " | |
2915 | "mismatch\n", | |
2916 | dev->name); | |
2917 | break; | |
2918 | case CLAW_RC_WRONG_VERSION: | |
2919 | printk(KERN_INFO "%s: Sys Validate " | |
2920 | "Resp : Wrong version\n", | |
2921 | dev->name); | |
2922 | break; | |
2923 | case CLAW_RC_HOST_RCV_TOO_SMALL: | |
2924 | printk(KERN_INFO "%s: Sys Validate " | |
2925 | "Resp : bad frame size\n", | |
2926 | dev->name); | |
2927 | break; | |
2928 | default: | |
2929 | printk(KERN_INFO "%s: Sys Validate " | |
2930 | "error code=%d \n", | |
2931 | dev->name, p_ctlbk->rc ); | |
2932 | break; | |
2933 | } | |
2934 | break; | |
2935 | ||
2936 | case CONNECTION_REQUEST: | |
2937 | p_connect=(struct conncmd *)&(p_ctlbk->data); | |
2938 | printk(KERN_INFO "%s: Recv Conn Req: Vers=%d,link_id=%d," | |
2939 | "Corr=%d,HOST appl=%.8s,WS appl=%.8s\n", | |
2940 | dev->name, | |
2941 | p_ctlbk->version, | |
2942 | p_ctlbk->linkid, | |
2943 | p_ctlbk->correlator, | |
2944 | p_connect->host_name, | |
2945 | p_connect->WS_name); | |
2946 | if (privptr->active_link_ID!=0 ) { | |
2947 | claw_snd_disc(dev, p_ctlbk); | |
2948 | printk(KERN_INFO "%s: Conn Req error : " | |
2949 | "already logical link is active \n", | |
2950 | dev->name); | |
2951 | } | |
2952 | if (p_ctlbk->linkid!=1 ) { | |
2953 | claw_snd_disc(dev, p_ctlbk); | |
2954 | printk(KERN_INFO "%s: Conn Req error : " | |
2955 | "req logical link id is not 1\n", | |
2956 | dev->name); | |
2957 | } | |
2958 | rc=find_link(dev, | |
2959 | p_connect->host_name, p_connect->WS_name); | |
2960 | if (rc!=0) { | |
2961 | claw_snd_disc(dev, p_ctlbk); | |
2962 | printk(KERN_INFO "%s: Conn Req error : " | |
2963 | "req appl name does not match\n", | |
2964 | dev->name); | |
2965 | } | |
2966 | claw_send_control(dev, | |
2967 | CONNECTION_CONFIRM, p_ctlbk->linkid, | |
2968 | p_ctlbk->correlator, | |
2969 | 0, p_connect->host_name, | |
2970 | p_connect->WS_name); | |
2971 | if (p_env->packing == PACKING_ASK) { | |
2972 | printk("%s: Now Pack ask\n",dev->name); | |
2973 | p_env->packing = PACK_SEND; | |
2974 | claw_snd_conn_req(dev,0); | |
2975 | } | |
2976 | printk(KERN_INFO "%s: CLAW device %.8s: Connection " | |
2977 | "completed link_id=%d.\n", | |
2978 | dev->name, temp_ws_name, | |
2979 | p_ctlbk->linkid); | |
2980 | privptr->active_link_ID=p_ctlbk->linkid; | |
2981 | p_ch=&privptr->channel[WRITE]; | |
2982 | wake_up(&p_ch->wait); /* wake up claw_open ( WRITE) */ | |
2983 | break; | |
2984 | case CONNECTION_RESPONSE: | |
2985 | p_connect=(struct conncmd *)&(p_ctlbk->data); | |
2986 | printk(KERN_INFO "%s: Revc Conn Resp: Vers=%d,link_id=%d," | |
2987 | "Corr=%d,RC=%d,Host appl=%.8s, WS appl=%.8s\n", | |
2988 | dev->name, | |
2989 | p_ctlbk->version, | |
2990 | p_ctlbk->linkid, | |
2991 | p_ctlbk->correlator, | |
2992 | p_ctlbk->rc, | |
2993 | p_connect->host_name, | |
2994 | p_connect->WS_name); | |
2995 | ||
2996 | if (p_ctlbk->rc !=0 ) { | |
2997 | printk(KERN_INFO "%s: Conn Resp error: rc=%d \n", | |
2998 | dev->name, p_ctlbk->rc); | |
2999 | return 1; | |
3000 | } | |
3001 | rc=find_link(dev, | |
3002 | p_connect->host_name, p_connect->WS_name); | |
3003 | if (rc!=0) { | |
3004 | claw_snd_disc(dev, p_ctlbk); | |
3005 | printk(KERN_INFO "%s: Conn Resp error: " | |
3006 | "req appl name does not match\n", | |
3007 | dev->name); | |
3008 | } | |
3009 | /* should be until CONNECTION_CONFIRM */ | |
3010 | privptr->active_link_ID = - (p_ctlbk->linkid); | |
3011 | break; | |
3012 | case CONNECTION_CONFIRM: | |
3013 | p_connect=(struct conncmd *)&(p_ctlbk->data); | |
3014 | printk(KERN_INFO "%s: Recv Conn Confirm:Vers=%d,link_id=%d," | |
3015 | "Corr=%d,Host appl=%.8s,WS appl=%.8s\n", | |
3016 | dev->name, | |
3017 | p_ctlbk->version, | |
3018 | p_ctlbk->linkid, | |
3019 | p_ctlbk->correlator, | |
3020 | p_connect->host_name, | |
3021 | p_connect->WS_name); | |
3022 | if (p_ctlbk->linkid== -(privptr->active_link_ID)) { | |
3023 | privptr->active_link_ID=p_ctlbk->linkid; | |
3024 | if (p_env->packing > PACKING_ASK) { | |
3025 | printk(KERN_INFO "%s: Confirmed Now packing\n",dev->name); | |
3026 | p_env->packing = DO_PACKED; | |
3027 | } | |
3028 | p_ch=&privptr->channel[WRITE]; | |
3029 | wake_up(&p_ch->wait); | |
3030 | } | |
3031 | else { | |
3032 | printk(KERN_INFO "%s: Conn confirm: " | |
3033 | "unexpected linkid=%d \n", | |
3034 | dev->name, p_ctlbk->linkid); | |
3035 | claw_snd_disc(dev, p_ctlbk); | |
3036 | } | |
3037 | break; | |
3038 | case DISCONNECT: | |
3039 | printk(KERN_INFO "%s: Disconnect: " | |
3040 | "Vers=%d,link_id=%d,Corr=%d\n", | |
3041 | dev->name, p_ctlbk->version, | |
3042 | p_ctlbk->linkid, p_ctlbk->correlator); | |
3043 | if ((p_ctlbk->linkid == 2) && | |
3044 | (p_env->packing == PACK_SEND)) { | |
3045 | privptr->active_link_ID = 1; | |
3046 | p_env->packing = DO_PACKED; | |
3047 | } | |
3048 | else | |
3049 | privptr->active_link_ID=0; | |
3050 | break; | |
3051 | case CLAW_ERROR: | |
3052 | printk(KERN_INFO "%s: CLAW ERROR detected\n", | |
3053 | dev->name); | |
3054 | break; | |
3055 | default: | |
3056 | printk(KERN_INFO "%s: Unexpected command code=%d \n", | |
3057 | dev->name, p_ctlbk->command); | |
3058 | break; | |
3059 | } | |
3060 | ||
3061 | #ifdef FUNCTRACE | |
3062 | printk(KERN_INFO "%s: %s() exit on line %d, rc = 0\n", | |
3063 | dev->name,__FUNCTION__,__LINE__); | |
3064 | #endif | |
3065 | ||
3066 | return 0; | |
3067 | } /* end of claw_process_control */ | |
3068 | ||
3069 | ||
3070 | /*-------------------------------------------------------------------* | |
3071 | * claw_send_control * | |
3072 | * * | |
3073 | *--------------------------------------------------------------------*/ | |
3074 | ||
3075 | static int | |
3076 | claw_send_control(struct net_device *dev, __u8 type, __u8 link, | |
3077 | __u8 correlator, __u8 rc, char *local_name, char *remote_name) | |
3078 | { | |
3079 | struct claw_privbk *privptr; | |
3080 | struct clawctl *p_ctl; | |
3081 | struct sysval *p_sysval; | |
3082 | struct conncmd *p_connect; | |
3083 | struct sk_buff *skb; | |
3084 | ||
3085 | #ifdef FUNCTRACE | |
3086 | printk(KERN_INFO "%s:%s > enter \n",dev->name,__FUNCTION__); | |
3087 | #endif | |
3088 | CLAW_DBF_TEXT(2,setup,"sndcntl"); | |
3089 | #ifdef DEBUGMSG | |
3090 | printk(KERN_INFO "%s: Sending Control Packet \n",dev->name); | |
3091 | printk(KERN_INFO "%s: variable type = 0x%X, link = " | |
3092 | "%d, correlator = %d, rc = %d\n", | |
3093 | dev->name,type, link, correlator, rc); | |
3094 | printk(KERN_INFO "%s: variable local_name = %s, " | |
3095 | "remote_name = %s\n",dev->name, local_name, remote_name); | |
3096 | #endif | |
3097 | privptr=dev->priv; | |
3098 | p_ctl=(struct clawctl *)&privptr->ctl_bk; | |
3099 | ||
3100 | p_ctl->command=type; | |
3101 | p_ctl->version=CLAW_VERSION_ID; | |
3102 | p_ctl->linkid=link; | |
3103 | p_ctl->correlator=correlator; | |
3104 | p_ctl->rc=rc; | |
3105 | ||
3106 | p_sysval=(struct sysval *)&p_ctl->data; | |
3107 | p_connect=(struct conncmd *)&p_ctl->data; | |
3108 | ||
3109 | switch (p_ctl->command) { | |
3110 | case SYSTEM_VALIDATE_REQUEST: | |
3111 | case SYSTEM_VALIDATE_RESPONSE: | |
3112 | memcpy(&p_sysval->host_name, local_name, 8); | |
3113 | memcpy(&p_sysval->WS_name, remote_name, 8); | |
3114 | if (privptr->p_env->packing > 0) { | |
3115 | p_sysval->read_frame_size=DEF_PACK_BUFSIZE; | |
3116 | p_sysval->write_frame_size=DEF_PACK_BUFSIZE; | |
3117 | } else { | |
3118 | /* how big is the piggest group of packets */ | |
3119 | p_sysval->read_frame_size=privptr->p_env->read_size; | |
3120 | p_sysval->write_frame_size=privptr->p_env->write_size; | |
3121 | } | |
3122 | memset(&p_sysval->reserved, 0x00, 4); | |
3123 | break; | |
3124 | case CONNECTION_REQUEST: | |
3125 | case CONNECTION_RESPONSE: | |
3126 | case CONNECTION_CONFIRM: | |
3127 | case DISCONNECT: | |
3128 | memcpy(&p_sysval->host_name, local_name, 8); | |
3129 | memcpy(&p_sysval->WS_name, remote_name, 8); | |
3130 | if (privptr->p_env->packing > 0) { | |
3131 | /* How big is the biggest packet */ | |
3132 | p_connect->reserved1[0]=CLAW_FRAME_SIZE; | |
3133 | p_connect->reserved1[1]=CLAW_FRAME_SIZE; | |
3134 | } else { | |
3135 | memset(&p_connect->reserved1, 0x00, 4); | |
3136 | memset(&p_connect->reserved2, 0x00, 4); | |
3137 | } | |
3138 | break; | |
3139 | default: | |
3140 | break; | |
3141 | } | |
3142 | ||
3143 | /* write Control Record to the device */ | |
3144 | ||
3145 | ||
3146 | skb = dev_alloc_skb(sizeof(struct clawctl)); | |
3147 | if (!skb) { | |
3148 | printk( "%s:%s low on mem, returning...\n", | |
3149 | dev->name,__FUNCTION__); | |
3150 | #ifdef DEBUG | |
3151 | printk(KERN_INFO "%s:%s Exit, rc = ENOMEM\n", | |
3152 | dev->name,__FUNCTION__); | |
3153 | #endif | |
3154 | return -ENOMEM; | |
3155 | } | |
3156 | memcpy(skb_put(skb, sizeof(struct clawctl)), | |
3157 | p_ctl, sizeof(struct clawctl)); | |
3158 | #ifdef IOTRACE | |
3159 | printk(KERN_INFO "%s: outbnd claw cntl data \n",dev->name); | |
3160 | dumpit((char *)p_ctl,sizeof(struct clawctl)); | |
3161 | #endif | |
3162 | if (privptr->p_env->packing >= PACK_SEND) | |
3163 | claw_hw_tx(skb, dev, 1); | |
3164 | else | |
3165 | claw_hw_tx(skb, dev, 0); | |
3166 | #ifdef FUNCTRACE | |
3167 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
3168 | dev->name,__FUNCTION__,__LINE__); | |
3169 | #endif | |
3170 | ||
3171 | return 0; | |
3172 | } /* end of claw_send_control */ | |
3173 | ||
3174 | /*-------------------------------------------------------------------* | |
3175 | * claw_snd_conn_req * | |
3176 | * * | |
3177 | *--------------------------------------------------------------------*/ | |
3178 | static int | |
3179 | claw_snd_conn_req(struct net_device *dev, __u8 link) | |
3180 | { | |
3181 | int rc; | |
3182 | struct claw_privbk *privptr=dev->priv; | |
3183 | struct clawctl *p_ctl; | |
3184 | ||
3185 | #ifdef FUNCTRACE | |
3186 | printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__); | |
3187 | #endif | |
3188 | CLAW_DBF_TEXT(2,setup,"snd_conn"); | |
3189 | #ifdef DEBUGMSG | |
3190 | printk(KERN_INFO "%s: variable link = %X, dev =\n",dev->name, link); | |
3191 | dumpit((char *) dev, sizeof(struct net_device)); | |
3192 | #endif | |
3193 | rc = 1; | |
3194 | p_ctl=(struct clawctl *)&privptr->ctl_bk; | |
3195 | p_ctl->linkid = link; | |
3196 | if ( privptr->system_validate_comp==0x00 ) { | |
3197 | #ifdef FUNCTRACE | |
3198 | printk(KERN_INFO "%s:%s Exit on line %d, rc = 1\n", | |
3199 | dev->name,__FUNCTION__,__LINE__); | |
3200 | #endif | |
3201 | return rc; | |
3202 | } | |
3203 | if (privptr->p_env->packing == PACKING_ASK ) | |
3204 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
3205 | WS_APPL_NAME_PACKED, WS_APPL_NAME_PACKED); | |
3206 | if (privptr->p_env->packing == PACK_SEND) { | |
3207 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
3208 | WS_APPL_NAME_IP_NAME, WS_APPL_NAME_IP_NAME); | |
3209 | } | |
3210 | if (privptr->p_env->packing == 0) | |
3211 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
3212 | HOST_APPL_NAME, privptr->p_env->api_type); | |
3213 | #ifdef FUNCTRACE | |
3214 | printk(KERN_INFO "%s:%s Exit on line %d, rc = %d\n", | |
3215 | dev->name,__FUNCTION__,__LINE__, rc); | |
3216 | #endif | |
3217 | return rc; | |
3218 | ||
3219 | } /* end of claw_snd_conn_req */ | |
3220 | ||
3221 | ||
3222 | /*-------------------------------------------------------------------* | |
3223 | * claw_snd_disc * | |
3224 | * * | |
3225 | *--------------------------------------------------------------------*/ | |
3226 | ||
3227 | static int | |
3228 | claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl) | |
3229 | { | |
3230 | int rc; | |
3231 | struct conncmd * p_connect; | |
3232 | ||
3233 | #ifdef FUNCTRACE | |
3234 | printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__); | |
3235 | #endif | |
3236 | CLAW_DBF_TEXT(2,setup,"snd_dsc"); | |
3237 | #ifdef DEBUGMSG | |
3238 | printk(KERN_INFO "%s: variable dev =\n",dev->name); | |
3239 | dumpit((char *) dev, sizeof(struct net_device)); | |
3240 | printk(KERN_INFO "%s: variable p_ctl",dev->name); | |
3241 | dumpit((char *) p_ctl, sizeof(struct clawctl)); | |
3242 | #endif | |
3243 | p_connect=(struct conncmd *)&p_ctl->data; | |
3244 | ||
3245 | rc=claw_send_control(dev, DISCONNECT, p_ctl->linkid, | |
3246 | p_ctl->correlator, 0, | |
3247 | p_connect->host_name, p_connect->WS_name); | |
3248 | #ifdef FUNCTRACE | |
3249 | printk(KERN_INFO "%s:%s Exit on line %d, rc = %d\n", | |
3250 | dev->name,__FUNCTION__, __LINE__, rc); | |
3251 | #endif | |
3252 | return rc; | |
3253 | } /* end of claw_snd_disc */ | |
3254 | ||
3255 | ||
3256 | /*-------------------------------------------------------------------* | |
3257 | * claw_snd_sys_validate_rsp * | |
3258 | * * | |
3259 | *--------------------------------------------------------------------*/ | |
3260 | ||
3261 | static int | |
3262 | claw_snd_sys_validate_rsp(struct net_device *dev, | |
3263 | struct clawctl *p_ctl, __u32 return_code) | |
3264 | { | |
3265 | struct claw_env * p_env; | |
3266 | struct claw_privbk *privptr; | |
3267 | int rc; | |
3268 | ||
3269 | #ifdef FUNCTRACE | |
3270 | printk(KERN_INFO "%s:%s Enter\n", | |
3271 | dev->name,__FUNCTION__); | |
3272 | #endif | |
3273 | CLAW_DBF_TEXT(2,setup,"chkresp"); | |
3274 | #ifdef DEBUGMSG | |
3275 | printk(KERN_INFO "%s: variable return_code = %d, dev =\n", | |
3276 | dev->name, return_code); | |
3277 | dumpit((char *) dev, sizeof(struct net_device)); | |
3278 | printk(KERN_INFO "%s: variable p_ctl =\n",dev->name); | |
3279 | dumpit((char *) p_ctl, sizeof(struct clawctl)); | |
3280 | #endif | |
3281 | privptr = dev->priv; | |
3282 | p_env=privptr->p_env; | |
3283 | rc=claw_send_control(dev, SYSTEM_VALIDATE_RESPONSE, | |
3284 | p_ctl->linkid, | |
3285 | p_ctl->correlator, | |
3286 | return_code, | |
3287 | p_env->host_name, | |
3288 | p_env->adapter_name ); | |
3289 | #ifdef FUNCTRACE | |
3290 | printk(KERN_INFO "%s:%s Exit on line %d, rc = %d\n", | |
3291 | dev->name,__FUNCTION__,__LINE__, rc); | |
3292 | #endif | |
3293 | return rc; | |
3294 | } /* end of claw_snd_sys_validate_rsp */ | |
3295 | ||
3296 | /*-------------------------------------------------------------------* | |
3297 | * claw_strt_conn_req * | |
3298 | * * | |
3299 | *--------------------------------------------------------------------*/ | |
3300 | ||
3301 | static int | |
3302 | claw_strt_conn_req(struct net_device *dev ) | |
3303 | { | |
3304 | int rc; | |
3305 | ||
3306 | #ifdef FUNCTRACE | |
3307 | printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__); | |
3308 | #endif | |
3309 | CLAW_DBF_TEXT(2,setup,"conn_req"); | |
3310 | #ifdef DEBUGMSG | |
3311 | printk(KERN_INFO "%s: variable dev =\n",dev->name); | |
3312 | dumpit((char *) dev, sizeof(struct net_device)); | |
3313 | #endif | |
3314 | rc=claw_snd_conn_req(dev, 1); | |
3315 | #ifdef FUNCTRACE | |
3316 | printk(KERN_INFO "%s:%s Exit on line %d, rc = %d\n", | |
3317 | dev->name,__FUNCTION__,__LINE__, rc); | |
3318 | #endif | |
3319 | return rc; | |
3320 | } /* end of claw_strt_conn_req */ | |
3321 | ||
3322 | ||
3323 | ||
3324 | /*-------------------------------------------------------------------* | |
3325 | * claw_stats * | |
3326 | *-------------------------------------------------------------------*/ | |
3327 | ||
3328 | static struct | |
3329 | net_device_stats *claw_stats(struct net_device *dev) | |
3330 | { | |
3331 | struct claw_privbk *privptr; | |
3332 | #ifdef FUNCTRACE | |
3333 | printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__); | |
3334 | #endif | |
3335 | CLAW_DBF_TEXT(4,trace,"stats"); | |
3336 | privptr = dev->priv; | |
3337 | #ifdef FUNCTRACE | |
3338 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
3339 | dev->name,__FUNCTION__,__LINE__); | |
3340 | #endif | |
3341 | return &privptr->stats; | |
3342 | } /* end of claw_stats */ | |
3343 | ||
3344 | ||
3345 | /*-------------------------------------------------------------------* | |
3346 | * unpack_read * | |
3347 | * * | |
3348 | *--------------------------------------------------------------------*/ | |
3349 | static void | |
3350 | unpack_read(struct net_device *dev ) | |
3351 | { | |
3352 | struct sk_buff *skb; | |
3353 | struct claw_privbk *privptr; | |
3354 | struct claw_env *p_env; | |
3355 | struct ccwbk *p_this_ccw; | |
3356 | struct ccwbk *p_first_ccw; | |
3357 | struct ccwbk *p_last_ccw; | |
3358 | struct clawph *p_packh; | |
3359 | void *p_packd; | |
3360 | struct clawctl *p_ctlrec=NULL; | |
3361 | ||
3362 | __u32 len_of_data; | |
3363 | __u32 pack_off; | |
3364 | __u8 link_num; | |
3365 | __u8 mtc_this_frm=0; | |
3366 | __u32 bytes_to_mov; | |
3367 | struct chbk *p_ch = NULL; | |
3368 | int i=0; | |
3369 | int p=0; | |
3370 | ||
3371 | #ifdef FUNCTRACE | |
3372 | printk(KERN_INFO "%s:%s enter \n",dev->name,__FUNCTION__); | |
3373 | #endif | |
3374 | CLAW_DBF_TEXT(4,trace,"unpkread"); | |
3375 | p_first_ccw=NULL; | |
3376 | p_last_ccw=NULL; | |
3377 | p_packh=NULL; | |
3378 | p_packd=NULL; | |
3379 | privptr=dev->priv; | |
3380 | p_env = privptr->p_env; | |
3381 | p_this_ccw=privptr->p_read_active_first; | |
3382 | i=0; | |
3383 | while (p_this_ccw!=NULL && p_this_ccw->header.flag!=CLAW_PENDING) { | |
3384 | #ifdef IOTRACE | |
3385 | printk(KERN_INFO "%s p_this_ccw \n",dev->name); | |
3386 | dumpit((char*)p_this_ccw, sizeof(struct ccwbk)); | |
3387 | printk(KERN_INFO "%s Inbound p_this_ccw->p_buffer(64)" | |
3388 | " pk=%d \n",dev->name,p_env->packing); | |
3389 | dumpit((char *)p_this_ccw->p_buffer, 64 ); | |
3390 | #endif | |
3391 | pack_off = 0; | |
3392 | p = 0; | |
3393 | p_this_ccw->header.flag=CLAW_PENDING; | |
3394 | privptr->p_read_active_first=p_this_ccw->next; | |
3395 | p_this_ccw->next=NULL; | |
3396 | p_packh = (struct clawph *)p_this_ccw->p_buffer; | |
3397 | if ((p_env->packing == PACK_SEND) && | |
3398 | (p_packh->len == 32) && | |
3399 | (p_packh->link_num == 0)) { /* is it a packed ctl rec? */ | |
3400 | p_packh++; /* peek past pack header */ | |
3401 | p_ctlrec = (struct clawctl *)p_packh; | |
3402 | p_packh--; /* un peek */ | |
3403 | if ((p_ctlrec->command == CONNECTION_RESPONSE) || | |
3404 | (p_ctlrec->command == CONNECTION_CONFIRM)) | |
3405 | p_env->packing = DO_PACKED; | |
3406 | } | |
3407 | if (p_env->packing == DO_PACKED) | |
3408 | link_num=p_packh->link_num; | |
3409 | else | |
3410 | link_num=p_this_ccw->header.opcode / 8; | |
3411 | if ((p_this_ccw->header.opcode & MORE_to_COME_FLAG)!=0) { | |
3412 | #ifdef DEBUGMSG | |
3413 | printk(KERN_INFO "%s: %s > More_to_come is ON\n", | |
3414 | dev->name,__FUNCTION__); | |
3415 | #endif | |
3416 | mtc_this_frm=1; | |
3417 | if (p_this_ccw->header.length!= | |
3418 | privptr->p_env->read_size ) { | |
3419 | printk(KERN_INFO " %s: Invalid frame detected " | |
3420 | "length is %02x\n" , | |
3421 | dev->name, p_this_ccw->header.length); | |
3422 | } | |
3423 | } | |
3424 | ||
3425 | if (privptr->mtc_skipping) { | |
3426 | /* | |
3427 | * We're in the mode of skipping past a | |
3428 | * multi-frame message | |
3429 | * that we can't process for some reason or other. | |
3430 | * The first frame without the More-To-Come flag is | |
3431 | * the last frame of the skipped message. | |
3432 | */ | |
3433 | /* in case of More-To-Come not set in this frame */ | |
3434 | if (mtc_this_frm==0) { | |
3435 | privptr->mtc_skipping=0; /* Ok, the end */ | |
3436 | privptr->mtc_logical_link=-1; | |
3437 | } | |
3438 | #ifdef DEBUGMSG | |
3439 | printk(KERN_INFO "%s:%s goto next " | |
3440 | "frame from MoretoComeSkip \n", | |
3441 | dev->name,__FUNCTION__); | |
3442 | #endif | |
3443 | goto NextFrame; | |
3444 | } | |
3445 | ||
3446 | if (link_num==0) { | |
3447 | claw_process_control(dev, p_this_ccw); | |
3448 | #ifdef DEBUGMSG | |
3449 | printk(KERN_INFO "%s:%s goto next " | |
3450 | "frame from claw_process_control \n", | |
3451 | dev->name,__FUNCTION__); | |
3452 | #endif | |
3453 | CLAW_DBF_TEXT(4,trace,"UnpkCntl"); | |
3454 | goto NextFrame; | |
3455 | } | |
3456 | unpack_next: | |
3457 | if (p_env->packing == DO_PACKED) { | |
3458 | if (pack_off > p_env->read_size) | |
3459 | goto NextFrame; | |
3460 | p_packd = p_this_ccw->p_buffer+pack_off; | |
3461 | p_packh = (struct clawph *) p_packd; | |
3462 | if ((p_packh->len == 0) || /* all done with this frame? */ | |
3463 | (p_packh->flag != 0)) | |
3464 | goto NextFrame; | |
3465 | bytes_to_mov = p_packh->len; | |
3466 | pack_off += bytes_to_mov+sizeof(struct clawph); | |
3467 | p++; | |
3468 | } else { | |
3469 | bytes_to_mov=p_this_ccw->header.length; | |
3470 | } | |
3471 | if (privptr->mtc_logical_link<0) { | |
3472 | #ifdef DEBUGMSG | |
3473 | printk(KERN_INFO "%s: %s mtc_logical_link < 0 \n", | |
3474 | dev->name,__FUNCTION__); | |
3475 | #endif | |
3476 | ||
3477 | /* | |
3478 | * if More-To-Come is set in this frame then we don't know | |
3479 | * length of entire message, and hence have to allocate | |
3480 | * large buffer */ | |
3481 | ||
3482 | /* We are starting a new envelope */ | |
3483 | privptr->mtc_offset=0; | |
3484 | privptr->mtc_logical_link=link_num; | |
3485 | } | |
3486 | ||
3487 | if (bytes_to_mov > (MAX_ENVELOPE_SIZE- privptr->mtc_offset) ) { | |
3488 | /* error */ | |
3489 | #ifdef DEBUGMSG | |
3490 | printk(KERN_INFO "%s: %s > goto next " | |
3491 | "frame from MoretoComeSkip \n", | |
3492 | dev->name, | |
3493 | __FUNCTION__); | |
3494 | printk(KERN_INFO " bytes_to_mov %d > (MAX_ENVELOPE_" | |
3495 | "SIZE-privptr->mtc_offset %d)\n", | |
3496 | bytes_to_mov,(MAX_ENVELOPE_SIZE- privptr->mtc_offset)); | |
3497 | #endif | |
3498 | privptr->stats.rx_frame_errors++; | |
3499 | goto NextFrame; | |
3500 | } | |
3501 | if (p_env->packing == DO_PACKED) { | |
3502 | memcpy( privptr->p_mtc_envelope+ privptr->mtc_offset, | |
3503 | p_packd+sizeof(struct clawph), bytes_to_mov); | |
3504 | ||
3505 | } else { | |
3506 | memcpy( privptr->p_mtc_envelope+ privptr->mtc_offset, | |
3507 | p_this_ccw->p_buffer, bytes_to_mov); | |
3508 | } | |
3509 | #ifdef DEBUGMSG | |
3510 | printk(KERN_INFO "%s: %s() received data \n", | |
3511 | dev->name,__FUNCTION__); | |
3512 | if (p_env->packing == DO_PACKED) | |
3513 | dumpit((char *)p_packd+sizeof(struct clawph),32); | |
3514 | else | |
3515 | dumpit((char *)p_this_ccw->p_buffer, 32); | |
3516 | printk(KERN_INFO "%s: %s() bytelength %d \n", | |
3517 | dev->name,__FUNCTION__,bytes_to_mov); | |
3518 | #endif | |
3519 | if (mtc_this_frm==0) { | |
3520 | len_of_data=privptr->mtc_offset+bytes_to_mov; | |
3521 | skb=dev_alloc_skb(len_of_data); | |
3522 | if (skb) { | |
3523 | memcpy(skb_put(skb,len_of_data), | |
3524 | privptr->p_mtc_envelope, | |
3525 | len_of_data); | |
1da177e4 | 3526 | skb->dev=dev; |
98e399f8 | 3527 | skb_reset_mac_header(skb); |
1da177e4 LT |
3528 | skb->protocol=htons(ETH_P_IP); |
3529 | skb->ip_summed=CHECKSUM_UNNECESSARY; | |
3530 | privptr->stats.rx_packets++; | |
3531 | privptr->stats.rx_bytes+=len_of_data; | |
3532 | netif_rx(skb); | |
3533 | #ifdef DEBUGMSG | |
3534 | printk(KERN_INFO "%s: %s() netif_" | |
3535 | "rx(skb) completed \n", | |
3536 | dev->name,__FUNCTION__); | |
3537 | #endif | |
3538 | } | |
3539 | else { | |
3540 | privptr->stats.rx_dropped++; | |
3541 | printk(KERN_WARNING "%s: %s() low on memory\n", | |
3542 | dev->name,__FUNCTION__); | |
3543 | } | |
3544 | privptr->mtc_offset=0; | |
3545 | privptr->mtc_logical_link=-1; | |
3546 | } | |
3547 | else { | |
3548 | privptr->mtc_offset+=bytes_to_mov; | |
3549 | } | |
3550 | if (p_env->packing == DO_PACKED) | |
3551 | goto unpack_next; | |
3552 | NextFrame: | |
3553 | /* | |
3554 | * Remove ThisCCWblock from active read queue, and add it | |
3555 | * to queue of free blocks to be reused. | |
3556 | */ | |
3557 | i++; | |
3558 | p_this_ccw->header.length=0xffff; | |
3559 | p_this_ccw->header.opcode=0xff; | |
3560 | /* | |
3561 | * add this one to the free queue for later reuse | |
3562 | */ | |
3563 | if (p_first_ccw==NULL) { | |
3564 | p_first_ccw = p_this_ccw; | |
3565 | } | |
3566 | else { | |
3567 | p_last_ccw->next = p_this_ccw; | |
3568 | } | |
3569 | p_last_ccw = p_this_ccw; | |
3570 | /* | |
3571 | * chain to next block on active read queue | |
3572 | */ | |
3573 | p_this_ccw = privptr->p_read_active_first; | |
3574 | CLAW_DBF_TEXT_(4,trace,"rxpkt %d",p); | |
3575 | } /* end of while */ | |
3576 | ||
3577 | /* check validity */ | |
3578 | ||
3579 | #ifdef IOTRACE | |
3580 | printk(KERN_INFO "%s:%s processed frame is %d \n", | |
3581 | dev->name,__FUNCTION__,i); | |
3582 | printk(KERN_INFO "%s:%s F:%lx L:%lx\n", | |
3583 | dev->name, | |
3584 | __FUNCTION__, | |
3585 | (unsigned long)p_first_ccw, | |
3586 | (unsigned long)p_last_ccw); | |
3587 | #endif | |
3588 | CLAW_DBF_TEXT_(4,trace,"rxfrm %d",i); | |
3589 | add_claw_reads(dev, p_first_ccw, p_last_ccw); | |
3590 | p_ch=&privptr->channel[READ]; | |
3591 | claw_strt_read(dev, LOCK_YES); | |
3592 | #ifdef FUNCTRACE | |
3593 | printk(KERN_INFO "%s: %s exit on line %d\n", | |
3594 | dev->name, __FUNCTION__, __LINE__); | |
3595 | #endif | |
3596 | return; | |
3597 | } /* end of unpack_read */ | |
3598 | ||
3599 | /*-------------------------------------------------------------------* | |
3600 | * claw_strt_read * | |
3601 | * * | |
3602 | *--------------------------------------------------------------------*/ | |
3603 | static void | |
3604 | claw_strt_read (struct net_device *dev, int lock ) | |
3605 | { | |
3606 | int rc = 0; | |
3607 | __u32 parm; | |
3608 | unsigned long saveflags = 0; | |
3609 | struct claw_privbk *privptr=dev->priv; | |
3610 | struct ccwbk*p_ccwbk; | |
3611 | struct chbk *p_ch; | |
3612 | struct clawh *p_clawh; | |
3613 | p_ch=&privptr->channel[READ]; | |
3614 | ||
3615 | #ifdef FUNCTRACE | |
3616 | printk(KERN_INFO "%s:%s Enter \n",dev->name,__FUNCTION__); | |
3617 | printk(KERN_INFO "%s: variable lock = %d, dev =\n",dev->name, lock); | |
3618 | dumpit((char *) dev, sizeof(struct net_device)); | |
3619 | #endif | |
3620 | CLAW_DBF_TEXT(4,trace,"StRdNter"); | |
3621 | p_clawh=(struct clawh *)privptr->p_claw_signal_blk; | |
3622 | p_clawh->flag=CLAW_IDLE; /* 0x00 */ | |
3623 | ||
3624 | if ((privptr->p_write_active_first!=NULL && | |
3625 | privptr->p_write_active_first->header.flag!=CLAW_PENDING) || | |
3626 | (privptr->p_read_active_first!=NULL && | |
3627 | privptr->p_read_active_first->header.flag!=CLAW_PENDING )) { | |
3628 | p_clawh->flag=CLAW_BUSY; /* 0xff */ | |
3629 | } | |
3630 | #ifdef DEBUGMSG | |
3631 | printk(KERN_INFO "%s:%s state-%02x\n" , | |
3632 | dev->name,__FUNCTION__, p_ch->claw_state); | |
3633 | #endif | |
3634 | if (lock==LOCK_YES) { | |
3635 | spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags); | |
3636 | } | |
3637 | if (test_and_set_bit(0, (void *)&p_ch->IO_active) == 0) { | |
3638 | #ifdef DEBUGMSG | |
3639 | printk(KERN_INFO "%s: HOT READ started in %s\n" , | |
3640 | dev->name,__FUNCTION__); | |
3641 | p_clawh=(struct clawh *)privptr->p_claw_signal_blk; | |
3642 | dumpit((char *)&p_clawh->flag , 1); | |
3643 | #endif | |
3644 | CLAW_DBF_TEXT(4,trace,"HotRead"); | |
3645 | p_ccwbk=privptr->p_read_active_first; | |
3646 | parm = (unsigned long) p_ch; | |
3647 | rc = ccw_device_start (p_ch->cdev, &p_ccwbk->read, parm, | |
3648 | 0xff, 0); | |
3649 | if (rc != 0) { | |
3650 | ccw_check_return_code(p_ch->cdev, rc); | |
3651 | } | |
3652 | } | |
3653 | else { | |
3654 | #ifdef DEBUGMSG | |
3655 | printk(KERN_INFO "%s: No READ started by %s() In progress\n" , | |
3656 | dev->name,__FUNCTION__); | |
3657 | #endif | |
3658 | CLAW_DBF_TEXT(2,trace,"ReadAct"); | |
3659 | } | |
3660 | ||
3661 | if (lock==LOCK_YES) { | |
3662 | spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags); | |
3663 | } | |
3664 | #ifdef FUNCTRACE | |
3665 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
3666 | dev->name,__FUNCTION__,__LINE__); | |
3667 | #endif | |
3668 | CLAW_DBF_TEXT(4,trace,"StRdExit"); | |
3669 | return; | |
3670 | } /* end of claw_strt_read */ | |
3671 | ||
3672 | /*-------------------------------------------------------------------* | |
3673 | * claw_strt_out_IO * | |
3674 | * * | |
3675 | *--------------------------------------------------------------------*/ | |
3676 | ||
3677 | static void | |
3678 | claw_strt_out_IO( struct net_device *dev ) | |
3679 | { | |
3680 | int rc = 0; | |
3681 | unsigned long parm; | |
3682 | struct claw_privbk *privptr; | |
3683 | struct chbk *p_ch; | |
3684 | struct ccwbk *p_first_ccw; | |
3685 | ||
3686 | #ifdef FUNCTRACE | |
3687 | printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__); | |
3688 | #endif | |
3689 | if (!dev) { | |
3690 | return; | |
3691 | } | |
3692 | privptr=(struct claw_privbk *)dev->priv; | |
3693 | p_ch=&privptr->channel[WRITE]; | |
3694 | ||
3695 | #ifdef DEBUGMSG | |
3696 | printk(KERN_INFO "%s:%s state-%02x\n" , | |
3697 | dev->name,__FUNCTION__,p_ch->claw_state); | |
3698 | #endif | |
3699 | CLAW_DBF_TEXT(4,trace,"strt_io"); | |
3700 | p_first_ccw=privptr->p_write_active_first; | |
3701 | ||
3702 | if (p_ch->claw_state == CLAW_STOP) | |
3703 | return; | |
3704 | if (p_first_ccw == NULL) { | |
3705 | #ifdef FUNCTRACE | |
3706 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
3707 | dev->name,__FUNCTION__,__LINE__); | |
3708 | #endif | |
3709 | return; | |
3710 | } | |
3711 | if (test_and_set_bit(0, (void *)&p_ch->IO_active) == 0) { | |
3712 | parm = (unsigned long) p_ch; | |
3713 | #ifdef DEBUGMSG | |
3714 | printk(KERN_INFO "%s:%s do_io \n" ,dev->name,__FUNCTION__); | |
3715 | dumpit((char *)p_first_ccw, sizeof(struct ccwbk)); | |
3716 | #endif | |
3717 | CLAW_DBF_TEXT(2,trace,"StWrtIO"); | |
3718 | rc = ccw_device_start (p_ch->cdev,&p_first_ccw->write, parm, | |
3719 | 0xff, 0); | |
3720 | if (rc != 0) { | |
3721 | ccw_check_return_code(p_ch->cdev, rc); | |
3722 | } | |
3723 | } | |
3724 | dev->trans_start = jiffies; | |
3725 | #ifdef FUNCTRACE | |
3726 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
3727 | dev->name,__FUNCTION__,__LINE__); | |
3728 | #endif | |
3729 | ||
3730 | return; | |
3731 | } /* end of claw_strt_out_IO */ | |
3732 | ||
3733 | /*-------------------------------------------------------------------* | |
3734 | * Free write buffers * | |
3735 | * * | |
3736 | *--------------------------------------------------------------------*/ | |
3737 | ||
3738 | static void | |
3739 | claw_free_wrt_buf( struct net_device *dev ) | |
3740 | { | |
3741 | ||
3742 | struct claw_privbk *privptr=(struct claw_privbk *)dev->priv; | |
3743 | struct ccwbk*p_first_ccw; | |
3744 | struct ccwbk*p_last_ccw; | |
3745 | struct ccwbk*p_this_ccw; | |
3746 | struct ccwbk*p_next_ccw; | |
3747 | #ifdef IOTRACE | |
3748 | struct ccwbk*p_buf; | |
3749 | #endif | |
3750 | #ifdef FUNCTRACE | |
3751 | printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__); | |
3752 | printk(KERN_INFO "%s: free count = %d variable dev =\n", | |
3753 | dev->name,privptr->write_free_count); | |
3754 | #endif | |
3755 | CLAW_DBF_TEXT(4,trace,"freewrtb"); | |
3756 | /* scan the write queue to free any completed write packets */ | |
3757 | p_first_ccw=NULL; | |
3758 | p_last_ccw=NULL; | |
3759 | #ifdef IOTRACE | |
3760 | printk(KERN_INFO "%s: Dump current CCW chain \n",dev->name ); | |
3761 | p_buf=privptr->p_write_active_first; | |
3762 | while (p_buf!=NULL) { | |
3763 | dumpit((char *)p_buf, sizeof(struct ccwbk)); | |
3764 | p_buf=p_buf->next; | |
3765 | } | |
3766 | if (p_buf==NULL) { | |
3767 | printk(KERN_INFO "%s: privptr->p_write_" | |
3768 | "active_first==NULL\n",dev->name ); | |
3769 | } | |
3770 | p_buf=(struct ccwbk*)privptr->p_end_ccw; | |
3771 | dumpit((char *)p_buf, sizeof(struct endccw)); | |
3772 | #endif | |
3773 | p_this_ccw=privptr->p_write_active_first; | |
3774 | while ( (p_this_ccw!=NULL) && (p_this_ccw->header.flag!=CLAW_PENDING)) | |
3775 | { | |
3776 | p_next_ccw = p_this_ccw->next; | |
3777 | if (((p_next_ccw!=NULL) && | |
3778 | (p_next_ccw->header.flag!=CLAW_PENDING)) || | |
3779 | ((p_this_ccw == privptr->p_write_active_last) && | |
3780 | (p_this_ccw->header.flag!=CLAW_PENDING))) { | |
3781 | /* The next CCW is OK or this is */ | |
3782 | /* the last CCW...free it @A1A */ | |
3783 | privptr->p_write_active_first=p_this_ccw->next; | |
3784 | p_this_ccw->header.flag=CLAW_PENDING; | |
3785 | p_this_ccw->next=privptr->p_write_free_chain; | |
3786 | privptr->p_write_free_chain=p_this_ccw; | |
3787 | ++privptr->write_free_count; | |
3788 | privptr->stats.tx_bytes+= p_this_ccw->write.count; | |
3789 | p_this_ccw=privptr->p_write_active_first; | |
3790 | privptr->stats.tx_packets++; | |
3791 | } | |
3792 | else { | |
3793 | break; | |
3794 | } | |
3795 | } | |
3796 | if (privptr->write_free_count!=0) { | |
3797 | claw_clearbit_busy(TB_NOBUFFER,dev); | |
3798 | } | |
3799 | /* whole chain removed? */ | |
3800 | if (privptr->p_write_active_first==NULL) { | |
3801 | privptr->p_write_active_last=NULL; | |
3802 | #ifdef DEBUGMSG | |
3803 | printk(KERN_INFO "%s:%s p_write_" | |
3804 | "active_first==NULL\n",dev->name,__FUNCTION__); | |
3805 | #endif | |
3806 | } | |
3807 | #ifdef IOTRACE | |
3808 | printk(KERN_INFO "%s: Dump arranged CCW chain \n",dev->name ); | |
3809 | p_buf=privptr->p_write_active_first; | |
3810 | while (p_buf!=NULL) { | |
3811 | dumpit((char *)p_buf, sizeof(struct ccwbk)); | |
3812 | p_buf=p_buf->next; | |
3813 | } | |
3814 | if (p_buf==NULL) { | |
3815 | printk(KERN_INFO "%s: privptr->p_write_active_" | |
3816 | "first==NULL\n",dev->name ); | |
3817 | } | |
3818 | p_buf=(struct ccwbk*)privptr->p_end_ccw; | |
3819 | dumpit((char *)p_buf, sizeof(struct endccw)); | |
3820 | #endif | |
3821 | ||
3822 | CLAW_DBF_TEXT_(4,trace,"FWC=%d",privptr->write_free_count); | |
3823 | #ifdef FUNCTRACE | |
3824 | printk(KERN_INFO "%s:%s Exit on line %d free_count =%d\n", | |
3825 | dev->name,__FUNCTION__, __LINE__,privptr->write_free_count); | |
3826 | #endif | |
3827 | return; | |
3828 | } | |
3829 | ||
3830 | /*-------------------------------------------------------------------* | |
3831 | * claw free netdevice * | |
3832 | * * | |
3833 | *--------------------------------------------------------------------*/ | |
3834 | static void | |
3835 | claw_free_netdevice(struct net_device * dev, int free_dev) | |
3836 | { | |
3837 | struct claw_privbk *privptr; | |
3838 | #ifdef FUNCTRACE | |
3839 | printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__); | |
3840 | #endif | |
3841 | CLAW_DBF_TEXT(2,setup,"free_dev"); | |
3842 | ||
3843 | if (!dev) | |
3844 | return; | |
3845 | CLAW_DBF_TEXT_(2,setup,"%s",dev->name); | |
3846 | privptr = dev->priv; | |
3847 | if (dev->flags & IFF_RUNNING) | |
3848 | claw_release(dev); | |
3849 | if (privptr) { | |
3850 | privptr->channel[READ].ndev = NULL; /* say it's free */ | |
3851 | } | |
3852 | dev->priv=NULL; | |
3853 | #ifdef MODULE | |
3854 | if (free_dev) { | |
3855 | free_netdev(dev); | |
3856 | } | |
3857 | #endif | |
3858 | CLAW_DBF_TEXT(2,setup,"feee_ok"); | |
3859 | #ifdef FUNCTRACE | |
3860 | printk(KERN_INFO "%s:%s Exit\n",dev->name,__FUNCTION__); | |
3861 | #endif | |
3862 | } | |
3863 | ||
3864 | /** | |
3865 | * Claw init netdevice | |
3866 | * Initialize everything of the net device except the name and the | |
3867 | * channel structs. | |
3868 | */ | |
3869 | static void | |
3870 | claw_init_netdevice(struct net_device * dev) | |
3871 | { | |
3872 | #ifdef FUNCTRACE | |
3873 | printk(KERN_INFO "%s:%s Enter\n",dev->name,__FUNCTION__); | |
3874 | #endif | |
3875 | CLAW_DBF_TEXT(2,setup,"init_dev"); | |
3876 | CLAW_DBF_TEXT_(2,setup,"%s",dev->name); | |
3877 | if (!dev) { | |
3878 | printk(KERN_WARNING "claw:%s BAD Device exit line %d\n", | |
3879 | __FUNCTION__,__LINE__); | |
3880 | CLAW_DBF_TEXT(2,setup,"baddev"); | |
3881 | return; | |
3882 | } | |
3883 | dev->mtu = CLAW_DEFAULT_MTU_SIZE; | |
3884 | dev->hard_start_xmit = claw_tx; | |
3885 | dev->open = claw_open; | |
3886 | dev->stop = claw_release; | |
3887 | dev->get_stats = claw_stats; | |
3888 | dev->change_mtu = claw_change_mtu; | |
3889 | dev->hard_header_len = 0; | |
3890 | dev->addr_len = 0; | |
3891 | dev->type = ARPHRD_SLIP; | |
3892 | dev->tx_queue_len = 1300; | |
3893 | dev->flags = IFF_POINTOPOINT | IFF_NOARP; | |
1da177e4 LT |
3894 | #ifdef FUNCTRACE |
3895 | printk(KERN_INFO "%s:%s Exit\n",dev->name,__FUNCTION__); | |
3896 | #endif | |
3897 | CLAW_DBF_TEXT(2,setup,"initok"); | |
3898 | return; | |
3899 | } | |
3900 | ||
3901 | /** | |
3902 | * Init a new channel in the privptr->channel[i]. | |
3903 | * | |
3904 | * @param cdev The ccw_device to be added. | |
3905 | * | |
3906 | * @return 0 on success, !0 on error. | |
3907 | */ | |
3908 | static int | |
3909 | add_channel(struct ccw_device *cdev,int i,struct claw_privbk *privptr) | |
3910 | { | |
3911 | struct chbk *p_ch; | |
dc5bc0ca | 3912 | struct ccw_dev_id dev_id; |
1da177e4 LT |
3913 | |
3914 | #ifdef FUNCTRACE | |
3915 | printk(KERN_INFO "%s:%s Enter\n",cdev->dev.bus_id,__FUNCTION__); | |
3916 | #endif | |
3917 | CLAW_DBF_TEXT_(2,setup,"%s",cdev->dev.bus_id); | |
3918 | privptr->channel[i].flag = i+1; /* Read is 1 Write is 2 */ | |
3919 | p_ch = &privptr->channel[i]; | |
3920 | p_ch->cdev = cdev; | |
3921 | snprintf(p_ch->id, CLAW_ID_SIZE, "cl-%s", cdev->dev.bus_id); | |
dc5bc0ca CH |
3922 | ccw_device_get_id(cdev, &dev_id); |
3923 | p_ch->devno = dev_id.devno; | |
dd00cc48 | 3924 | if ((p_ch->irb = kzalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) { |
1da177e4 LT |
3925 | printk(KERN_WARNING "%s Out of memory in %s for irb\n", |
3926 | p_ch->id,__FUNCTION__); | |
3927 | #ifdef FUNCTRACE | |
3928 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
3929 | p_ch->id,__FUNCTION__,__LINE__); | |
3930 | #endif | |
3931 | return -ENOMEM; | |
3932 | } | |
1da177e4 LT |
3933 | #ifdef FUNCTRACE |
3934 | printk(KERN_INFO "%s:%s Exit on line %d\n", | |
3935 | cdev->dev.bus_id,__FUNCTION__,__LINE__); | |
3936 | #endif | |
3937 | return 0; | |
3938 | } | |
3939 | ||
3940 | ||
3941 | /** | |
3942 | * | |
3943 | * Setup an interface. | |
3944 | * | |
3945 | * @param cgdev Device to be setup. | |
3946 | * | |
3947 | * @returns 0 on success, !0 on failure. | |
3948 | */ | |
3949 | static int | |
3950 | claw_new_device(struct ccwgroup_device *cgdev) | |
3951 | { | |
3952 | struct claw_privbk *privptr; | |
3953 | struct claw_env *p_env; | |
3954 | struct net_device *dev; | |
3955 | int ret; | |
dc5bc0ca | 3956 | struct ccw_dev_id dev_id; |
1da177e4 LT |
3957 | |
3958 | pr_debug("%s() called\n", __FUNCTION__); | |
3959 | printk(KERN_INFO "claw: add for %s\n",cgdev->cdev[READ]->dev.bus_id); | |
3960 | CLAW_DBF_TEXT(2,setup,"new_dev"); | |
3961 | privptr = cgdev->dev.driver_data; | |
3962 | cgdev->cdev[READ]->dev.driver_data = privptr; | |
3963 | cgdev->cdev[WRITE]->dev.driver_data = privptr; | |
3964 | if (!privptr) | |
3965 | return -ENODEV; | |
3966 | p_env = privptr->p_env; | |
dc5bc0ca CH |
3967 | ccw_device_get_id(cgdev->cdev[READ], &dev_id); |
3968 | p_env->devno[READ] = dev_id.devno; | |
3969 | ccw_device_get_id(cgdev->cdev[WRITE], &dev_id); | |
3970 | p_env->devno[WRITE] = dev_id.devno; | |
1da177e4 LT |
3971 | ret = add_channel(cgdev->cdev[0],0,privptr); |
3972 | if (ret == 0) | |
3973 | ret = add_channel(cgdev->cdev[1],1,privptr); | |
3974 | if (ret != 0) { | |
3975 | printk(KERN_WARNING | |
3976 | "add channel failed " | |
3977 | "with ret = %d\n", ret); | |
3978 | goto out; | |
3979 | } | |
3980 | ret = ccw_device_set_online(cgdev->cdev[READ]); | |
3981 | if (ret != 0) { | |
3982 | printk(KERN_WARNING | |
3983 | "claw: ccw_device_set_online %s READ failed " | |
3984 | "with ret = %d\n",cgdev->cdev[READ]->dev.bus_id,ret); | |
3985 | goto out; | |
3986 | } | |
3987 | ret = ccw_device_set_online(cgdev->cdev[WRITE]); | |
3988 | if (ret != 0) { | |
3989 | printk(KERN_WARNING | |
3990 | "claw: ccw_device_set_online %s WRITE failed " | |
3991 | "with ret = %d\n",cgdev->cdev[WRITE]->dev.bus_id, ret); | |
3992 | goto out; | |
3993 | } | |
3994 | dev = alloc_netdev(0,"claw%d",claw_init_netdevice); | |
3995 | if (!dev) { | |
3996 | printk(KERN_WARNING "%s:alloc_netdev failed\n",__FUNCTION__); | |
3997 | goto out; | |
3998 | } | |
3999 | dev->priv = privptr; | |
4000 | cgdev->dev.driver_data = privptr; | |
4001 | cgdev->cdev[READ]->dev.driver_data = privptr; | |
4002 | cgdev->cdev[WRITE]->dev.driver_data = privptr; | |
4003 | /* sysfs magic */ | |
4004 | SET_NETDEV_DEV(dev, &cgdev->dev); | |
4005 | if (register_netdev(dev) != 0) { | |
4006 | claw_free_netdevice(dev, 1); | |
4007 | CLAW_DBF_TEXT(2,trace,"regfail"); | |
4008 | goto out; | |
4009 | } | |
4010 | dev->flags &=~IFF_RUNNING; | |
4011 | if (privptr->buffs_alloc == 0) { | |
4012 | ret=init_ccw_bk(dev); | |
4013 | if (ret !=0) { | |
4014 | printk(KERN_WARNING | |
4015 | "claw: init_ccw_bk failed with ret=%d\n", ret); | |
4016 | unregister_netdev(dev); | |
4017 | claw_free_netdevice(dev,1); | |
4018 | CLAW_DBF_TEXT(2,trace,"ccwmem"); | |
4019 | goto out; | |
4020 | } | |
4021 | } | |
4022 | privptr->channel[READ].ndev = dev; | |
4023 | privptr->channel[WRITE].ndev = dev; | |
4024 | privptr->p_env->ndev = dev; | |
4025 | ||
4026 | printk(KERN_INFO "%s:readsize=%d writesize=%d " | |
4027 | "readbuffer=%d writebuffer=%d read=0x%04x write=0x%04x\n", | |
4028 | dev->name, p_env->read_size, | |
4029 | p_env->write_size, p_env->read_buffers, | |
4030 | p_env->write_buffers, p_env->devno[READ], | |
4031 | p_env->devno[WRITE]); | |
4032 | printk(KERN_INFO "%s:host_name:%.8s, adapter_name " | |
4033 | ":%.8s api_type: %.8s\n", | |
4034 | dev->name, p_env->host_name, | |
4035 | p_env->adapter_name , p_env->api_type); | |
4036 | return 0; | |
4037 | out: | |
4038 | ccw_device_set_offline(cgdev->cdev[1]); | |
4039 | ccw_device_set_offline(cgdev->cdev[0]); | |
4040 | ||
4041 | return -ENODEV; | |
4042 | } | |
4043 | ||
4044 | static void | |
4045 | claw_purge_skb_queue(struct sk_buff_head *q) | |
4046 | { | |
4047 | struct sk_buff *skb; | |
4048 | ||
4049 | CLAW_DBF_TEXT(4,trace,"purgque"); | |
4050 | ||
4051 | while ((skb = skb_dequeue(q))) { | |
4052 | atomic_dec(&skb->users); | |
8e84c801 | 4053 | dev_kfree_skb_any(skb); |
1da177e4 LT |
4054 | } |
4055 | } | |
4056 | ||
4057 | /** | |
4058 | * Shutdown an interface. | |
4059 | * | |
4060 | * @param cgdev Device to be shut down. | |
4061 | * | |
4062 | * @returns 0 on success, !0 on failure. | |
4063 | */ | |
4064 | static int | |
4065 | claw_shutdown_device(struct ccwgroup_device *cgdev) | |
4066 | { | |
4067 | struct claw_privbk *priv; | |
4068 | struct net_device *ndev; | |
4069 | int ret; | |
4070 | ||
4071 | pr_debug("%s() called\n", __FUNCTION__); | |
4072 | CLAW_DBF_TEXT_(2,setup,"%s",cgdev->dev.bus_id); | |
4073 | priv = cgdev->dev.driver_data; | |
4074 | if (!priv) | |
4075 | return -ENODEV; | |
4076 | ndev = priv->channel[READ].ndev; | |
4077 | if (ndev) { | |
4078 | /* Close the device */ | |
4079 | printk(KERN_INFO | |
4080 | "%s: shuting down \n",ndev->name); | |
4081 | if (ndev->flags & IFF_RUNNING) | |
4082 | ret = claw_release(ndev); | |
4083 | ndev->flags &=~IFF_RUNNING; | |
4084 | unregister_netdev(ndev); | |
4085 | ndev->priv = NULL; /* cgdev data, not ndev's to free */ | |
4086 | claw_free_netdevice(ndev, 1); | |
4087 | priv->channel[READ].ndev = NULL; | |
4088 | priv->channel[WRITE].ndev = NULL; | |
4089 | priv->p_env->ndev = NULL; | |
4090 | } | |
4091 | ccw_device_set_offline(cgdev->cdev[1]); | |
4092 | ccw_device_set_offline(cgdev->cdev[0]); | |
4093 | return 0; | |
4094 | } | |
4095 | ||
4096 | static void | |
4097 | claw_remove_device(struct ccwgroup_device *cgdev) | |
4098 | { | |
4099 | struct claw_privbk *priv; | |
4100 | ||
4101 | pr_debug("%s() called\n", __FUNCTION__); | |
4102 | CLAW_DBF_TEXT_(2,setup,"%s",cgdev->dev.bus_id); | |
4103 | priv = cgdev->dev.driver_data; | |
4104 | if (!priv) { | |
4105 | printk(KERN_WARNING "claw: %s() no Priv exiting\n",__FUNCTION__); | |
4106 | return; | |
4107 | } | |
4108 | printk(KERN_INFO "claw: %s() called %s will be removed.\n", | |
4109 | __FUNCTION__,cgdev->cdev[0]->dev.bus_id); | |
4110 | if (cgdev->state == CCWGROUP_ONLINE) | |
4111 | claw_shutdown_device(cgdev); | |
4112 | claw_remove_files(&cgdev->dev); | |
17fd682e JJ |
4113 | kfree(priv->p_mtc_envelope); |
4114 | priv->p_mtc_envelope=NULL; | |
4115 | kfree(priv->p_env); | |
4116 | priv->p_env=NULL; | |
4117 | kfree(priv->channel[0].irb); | |
4118 | priv->channel[0].irb=NULL; | |
4119 | kfree(priv->channel[1].irb); | |
4120 | priv->channel[1].irb=NULL; | |
1da177e4 LT |
4121 | kfree(priv); |
4122 | cgdev->dev.driver_data=NULL; | |
4123 | cgdev->cdev[READ]->dev.driver_data = NULL; | |
4124 | cgdev->cdev[WRITE]->dev.driver_data = NULL; | |
4125 | put_device(&cgdev->dev); | |
4126 | } | |
4127 | ||
4128 | ||
4129 | /* | |
4130 | * sysfs attributes | |
4131 | */ | |
4132 | static ssize_t | |
3fd3c0a5 | 4133 | claw_hname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4134 | { |
4135 | struct claw_privbk *priv; | |
4136 | struct claw_env * p_env; | |
4137 | ||
4138 | priv = dev->driver_data; | |
4139 | if (!priv) | |
4140 | return -ENODEV; | |
4141 | p_env = priv->p_env; | |
4142 | return sprintf(buf, "%s\n",p_env->host_name); | |
4143 | } | |
4144 | ||
4145 | static ssize_t | |
3fd3c0a5 | 4146 | claw_hname_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
4147 | { |
4148 | struct claw_privbk *priv; | |
4149 | struct claw_env * p_env; | |
4150 | ||
4151 | priv = dev->driver_data; | |
4152 | if (!priv) | |
4153 | return -ENODEV; | |
4154 | p_env = priv->p_env; | |
4155 | if (count > MAX_NAME_LEN+1) | |
4156 | return -EINVAL; | |
4157 | memset(p_env->host_name, 0x20, MAX_NAME_LEN); | |
4158 | strncpy(p_env->host_name,buf, count); | |
4159 | p_env->host_name[count-1] = 0x20; /* clear extra 0x0a */ | |
4160 | p_env->host_name[MAX_NAME_LEN] = 0x00; | |
4161 | CLAW_DBF_TEXT(2,setup,"HstnSet"); | |
4162 | CLAW_DBF_TEXT_(2,setup,"%s",p_env->host_name); | |
4163 | ||
4164 | return count; | |
4165 | } | |
4166 | ||
4167 | static DEVICE_ATTR(host_name, 0644, claw_hname_show, claw_hname_write); | |
4168 | ||
4169 | static ssize_t | |
3fd3c0a5 | 4170 | claw_adname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4171 | { |
4172 | struct claw_privbk *priv; | |
4173 | struct claw_env * p_env; | |
4174 | ||
4175 | priv = dev->driver_data; | |
4176 | if (!priv) | |
4177 | return -ENODEV; | |
4178 | p_env = priv->p_env; | |
4179 | return sprintf(buf, "%s\n",p_env->adapter_name); | |
4180 | } | |
4181 | ||
4182 | static ssize_t | |
3fd3c0a5 | 4183 | claw_adname_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
4184 | { |
4185 | struct claw_privbk *priv; | |
4186 | struct claw_env * p_env; | |
4187 | ||
4188 | priv = dev->driver_data; | |
4189 | if (!priv) | |
4190 | return -ENODEV; | |
4191 | p_env = priv->p_env; | |
4192 | if (count > MAX_NAME_LEN+1) | |
4193 | return -EINVAL; | |
4194 | memset(p_env->adapter_name, 0x20, MAX_NAME_LEN); | |
4195 | strncpy(p_env->adapter_name,buf, count); | |
4196 | p_env->adapter_name[count-1] = 0x20; /* clear extra 0x0a */ | |
4197 | p_env->adapter_name[MAX_NAME_LEN] = 0x00; | |
4198 | CLAW_DBF_TEXT(2,setup,"AdnSet"); | |
4199 | CLAW_DBF_TEXT_(2,setup,"%s",p_env->adapter_name); | |
4200 | ||
4201 | return count; | |
4202 | } | |
4203 | ||
4204 | static DEVICE_ATTR(adapter_name, 0644, claw_adname_show, claw_adname_write); | |
4205 | ||
4206 | static ssize_t | |
3fd3c0a5 | 4207 | claw_apname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4208 | { |
4209 | struct claw_privbk *priv; | |
4210 | struct claw_env * p_env; | |
4211 | ||
4212 | priv = dev->driver_data; | |
4213 | if (!priv) | |
4214 | return -ENODEV; | |
4215 | p_env = priv->p_env; | |
4216 | return sprintf(buf, "%s\n", | |
4217 | p_env->api_type); | |
4218 | } | |
4219 | ||
4220 | static ssize_t | |
3fd3c0a5 | 4221 | claw_apname_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
4222 | { |
4223 | struct claw_privbk *priv; | |
4224 | struct claw_env * p_env; | |
4225 | ||
4226 | priv = dev->driver_data; | |
4227 | if (!priv) | |
4228 | return -ENODEV; | |
4229 | p_env = priv->p_env; | |
4230 | if (count > MAX_NAME_LEN+1) | |
4231 | return -EINVAL; | |
4232 | memset(p_env->api_type, 0x20, MAX_NAME_LEN); | |
4233 | strncpy(p_env->api_type,buf, count); | |
4234 | p_env->api_type[count-1] = 0x20; /* we get a loose 0x0a */ | |
4235 | p_env->api_type[MAX_NAME_LEN] = 0x00; | |
4236 | if(strncmp(p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
4237 | p_env->read_size=DEF_PACK_BUFSIZE; | |
4238 | p_env->write_size=DEF_PACK_BUFSIZE; | |
4239 | p_env->packing=PACKING_ASK; | |
4240 | CLAW_DBF_TEXT(2,setup,"PACKING"); | |
4241 | } | |
4242 | else { | |
4243 | p_env->packing=0; | |
4244 | p_env->read_size=CLAW_FRAME_SIZE; | |
4245 | p_env->write_size=CLAW_FRAME_SIZE; | |
4246 | CLAW_DBF_TEXT(2,setup,"ApiSet"); | |
4247 | } | |
4248 | CLAW_DBF_TEXT_(2,setup,"%s",p_env->api_type); | |
4249 | return count; | |
4250 | } | |
4251 | ||
4252 | static DEVICE_ATTR(api_type, 0644, claw_apname_show, claw_apname_write); | |
4253 | ||
4254 | static ssize_t | |
3fd3c0a5 | 4255 | claw_wbuff_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4256 | { |
4257 | struct claw_privbk *priv; | |
4258 | struct claw_env * p_env; | |
4259 | ||
4260 | priv = dev->driver_data; | |
4261 | if (!priv) | |
4262 | return -ENODEV; | |
4263 | p_env = priv->p_env; | |
4264 | return sprintf(buf, "%d\n", p_env->write_buffers); | |
4265 | } | |
4266 | ||
4267 | static ssize_t | |
3fd3c0a5 | 4268 | claw_wbuff_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
4269 | { |
4270 | struct claw_privbk *priv; | |
4271 | struct claw_env * p_env; | |
4272 | int nnn,max; | |
4273 | ||
4274 | priv = dev->driver_data; | |
4275 | if (!priv) | |
4276 | return -ENODEV; | |
4277 | p_env = priv->p_env; | |
4278 | sscanf(buf, "%i", &nnn); | |
4279 | if (p_env->packing) { | |
4280 | max = 64; | |
4281 | } | |
4282 | else { | |
4283 | max = 512; | |
4284 | } | |
4285 | if ((nnn > max ) || (nnn < 2)) | |
4286 | return -EINVAL; | |
4287 | p_env->write_buffers = nnn; | |
4288 | CLAW_DBF_TEXT(2,setup,"Wbufset"); | |
4289 | CLAW_DBF_TEXT_(2,setup,"WB=%d",p_env->write_buffers); | |
4290 | return count; | |
4291 | } | |
4292 | ||
4293 | static DEVICE_ATTR(write_buffer, 0644, claw_wbuff_show, claw_wbuff_write); | |
4294 | ||
4295 | static ssize_t | |
3fd3c0a5 | 4296 | claw_rbuff_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
4297 | { |
4298 | struct claw_privbk *priv; | |
4299 | struct claw_env * p_env; | |
4300 | ||
4301 | priv = dev->driver_data; | |
4302 | if (!priv) | |
4303 | return -ENODEV; | |
4304 | p_env = priv->p_env; | |
4305 | return sprintf(buf, "%d\n", p_env->read_buffers); | |
4306 | } | |
4307 | ||
4308 | static ssize_t | |
3fd3c0a5 | 4309 | claw_rbuff_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
4310 | { |
4311 | struct claw_privbk *priv; | |
4312 | struct claw_env *p_env; | |
4313 | int nnn,max; | |
4314 | ||
4315 | priv = dev->driver_data; | |
4316 | if (!priv) | |
4317 | return -ENODEV; | |
4318 | p_env = priv->p_env; | |
4319 | sscanf(buf, "%i", &nnn); | |
4320 | if (p_env->packing) { | |
4321 | max = 64; | |
4322 | } | |
4323 | else { | |
4324 | max = 512; | |
4325 | } | |
4326 | if ((nnn > max ) || (nnn < 2)) | |
4327 | return -EINVAL; | |
4328 | p_env->read_buffers = nnn; | |
4329 | CLAW_DBF_TEXT(2,setup,"Rbufset"); | |
4330 | CLAW_DBF_TEXT_(2,setup,"RB=%d",p_env->read_buffers); | |
4331 | return count; | |
4332 | } | |
4333 | ||
4334 | static DEVICE_ATTR(read_buffer, 0644, claw_rbuff_show, claw_rbuff_write); | |
4335 | ||
4336 | static struct attribute *claw_attr[] = { | |
4337 | &dev_attr_read_buffer.attr, | |
4338 | &dev_attr_write_buffer.attr, | |
4339 | &dev_attr_adapter_name.attr, | |
4340 | &dev_attr_api_type.attr, | |
4341 | &dev_attr_host_name.attr, | |
4342 | NULL, | |
4343 | }; | |
4344 | ||
4345 | static struct attribute_group claw_attr_group = { | |
4346 | .attrs = claw_attr, | |
4347 | }; | |
4348 | ||
4349 | static int | |
4350 | claw_add_files(struct device *dev) | |
4351 | { | |
4352 | pr_debug("%s() called\n", __FUNCTION__); | |
4353 | CLAW_DBF_TEXT(2,setup,"add_file"); | |
4354 | return sysfs_create_group(&dev->kobj, &claw_attr_group); | |
4355 | } | |
4356 | ||
4357 | static void | |
4358 | claw_remove_files(struct device *dev) | |
4359 | { | |
4360 | pr_debug("%s() called\n", __FUNCTION__); | |
4361 | CLAW_DBF_TEXT(2,setup,"rem_file"); | |
4362 | sysfs_remove_group(&dev->kobj, &claw_attr_group); | |
4363 | } | |
4364 | ||
4365 | /*--------------------------------------------------------------------* | |
4366 | * claw_init and cleanup * | |
4367 | *---------------------------------------------------------------------*/ | |
4368 | ||
4369 | static void __exit | |
4370 | claw_cleanup(void) | |
4371 | { | |
4372 | unregister_cu3088_discipline(&claw_group_driver); | |
4373 | claw_unregister_debug_facility(); | |
4374 | printk(KERN_INFO "claw: Driver unloaded\n"); | |
4375 | ||
4376 | } | |
4377 | ||
4378 | /** | |
4379 | * Initialize module. | |
4380 | * This is called just after the module is loaded. | |
4381 | * | |
4382 | * @return 0 on success, !0 on error. | |
4383 | */ | |
4384 | static int __init | |
4385 | claw_init(void) | |
4386 | { | |
4387 | int ret = 0; | |
e018ba1f | 4388 | printk(KERN_INFO "claw: starting driver\n"); |
1da177e4 LT |
4389 | |
4390 | #ifdef FUNCTRACE | |
4391 | printk(KERN_INFO "claw: %s() enter \n",__FUNCTION__); | |
4392 | #endif | |
4393 | ret = claw_register_debug_facility(); | |
4394 | if (ret) { | |
4395 | printk(KERN_WARNING "claw: %s() debug_register failed %d\n", | |
4396 | __FUNCTION__,ret); | |
4397 | return ret; | |
4398 | } | |
4399 | CLAW_DBF_TEXT(2,setup,"init_mod"); | |
4400 | ret = register_cu3088_discipline(&claw_group_driver); | |
4401 | if (ret) { | |
4402 | claw_unregister_debug_facility(); | |
4403 | printk(KERN_WARNING "claw; %s() cu3088 register failed %d\n", | |
4404 | __FUNCTION__,ret); | |
4405 | } | |
4406 | #ifdef FUNCTRACE | |
4407 | printk(KERN_INFO "claw: %s() exit \n",__FUNCTION__); | |
4408 | #endif | |
4409 | return ret; | |
4410 | } | |
4411 | ||
4412 | module_init(claw_init); | |
4413 | module_exit(claw_cleanup); | |
4414 | ||
4415 | ||
4416 | ||
4417 | /*--------------------------------------------------------------------* | |
4418 | * End of File * | |
4419 | *---------------------------------------------------------------------*/ | |
4420 | ||
4421 |