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Commit | Line | Data |
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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 | |
b805da74 | 61 | * 1.5 |
1da177e4 | 62 | */ |
1da177e4 LT |
63 | #include <asm/ccwdev.h> |
64 | #include <asm/ccwgroup.h> | |
65 | #include <asm/debug.h> | |
66 | #include <asm/idals.h> | |
67 | #include <asm/io.h> | |
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 | ||
b805da74 AR |
93 | /* |
94 | CLAW uses the s390dbf file system see claw_trace and claw_setup | |
1da177e4 LT |
95 | */ |
96 | ||
1da177e4 | 97 | |
2b67fc46 | 98 | static char debug_buffer[255]; |
1da177e4 LT |
99 | /** |
100 | * Debug Facility Stuff | |
101 | */ | |
102 | static debug_info_t *claw_dbf_setup; | |
103 | static debug_info_t *claw_dbf_trace; | |
104 | ||
105 | /** | |
106 | * CLAW Debug Facility functions | |
107 | */ | |
108 | static void | |
109 | claw_unregister_debug_facility(void) | |
110 | { | |
111 | if (claw_dbf_setup) | |
112 | debug_unregister(claw_dbf_setup); | |
113 | if (claw_dbf_trace) | |
114 | debug_unregister(claw_dbf_trace); | |
115 | } | |
116 | ||
117 | static int | |
118 | claw_register_debug_facility(void) | |
119 | { | |
66a464db MH |
120 | claw_dbf_setup = debug_register("claw_setup", 2, 1, 8); |
121 | claw_dbf_trace = debug_register("claw_trace", 2, 2, 8); | |
1da177e4 | 122 | if (claw_dbf_setup == NULL || claw_dbf_trace == NULL) { |
1da177e4 LT |
123 | claw_unregister_debug_facility(); |
124 | return -ENOMEM; | |
125 | } | |
126 | debug_register_view(claw_dbf_setup, &debug_hex_ascii_view); | |
127 | debug_set_level(claw_dbf_setup, 2); | |
128 | debug_register_view(claw_dbf_trace, &debug_hex_ascii_view); | |
129 | debug_set_level(claw_dbf_trace, 2); | |
130 | return 0; | |
131 | } | |
132 | ||
133 | static inline void | |
134 | claw_set_busy(struct net_device *dev) | |
135 | { | |
6951df34 | 136 | ((struct claw_privbk *)dev->ml_priv)->tbusy = 1; |
1da177e4 LT |
137 | eieio(); |
138 | } | |
139 | ||
140 | static inline void | |
141 | claw_clear_busy(struct net_device *dev) | |
142 | { | |
6951df34 | 143 | clear_bit(0, &(((struct claw_privbk *) dev->ml_priv)->tbusy)); |
1da177e4 LT |
144 | netif_wake_queue(dev); |
145 | eieio(); | |
146 | } | |
147 | ||
148 | static inline int | |
149 | claw_check_busy(struct net_device *dev) | |
150 | { | |
151 | eieio(); | |
6951df34 | 152 | return ((struct claw_privbk *) dev->ml_priv)->tbusy; |
1da177e4 LT |
153 | } |
154 | ||
155 | static inline void | |
156 | claw_setbit_busy(int nr,struct net_device *dev) | |
157 | { | |
158 | netif_stop_queue(dev); | |
6951df34 | 159 | set_bit(nr, (void *)&(((struct claw_privbk *)dev->ml_priv)->tbusy)); |
1da177e4 LT |
160 | } |
161 | ||
162 | static inline void | |
163 | claw_clearbit_busy(int nr,struct net_device *dev) | |
164 | { | |
6951df34 | 165 | clear_bit(nr, (void *)&(((struct claw_privbk *)dev->ml_priv)->tbusy)); |
1da177e4 LT |
166 | netif_wake_queue(dev); |
167 | } | |
168 | ||
169 | static inline int | |
170 | claw_test_and_setbit_busy(int nr,struct net_device *dev) | |
171 | { | |
172 | netif_stop_queue(dev); | |
173 | return test_and_set_bit(nr, | |
6951df34 | 174 | (void *)&(((struct claw_privbk *) dev->ml_priv)->tbusy)); |
1da177e4 LT |
175 | } |
176 | ||
177 | ||
178 | /* Functions for the DEV methods */ | |
179 | ||
180 | static int claw_probe(struct ccwgroup_device *cgdev); | |
181 | static void claw_remove_device(struct ccwgroup_device *cgdev); | |
182 | static void claw_purge_skb_queue(struct sk_buff_head *q); | |
183 | static int claw_new_device(struct ccwgroup_device *cgdev); | |
184 | static int claw_shutdown_device(struct ccwgroup_device *cgdev); | |
185 | static int claw_tx(struct sk_buff *skb, struct net_device *dev); | |
186 | static int claw_change_mtu( struct net_device *dev, int new_mtu); | |
187 | static int claw_open(struct net_device *dev); | |
188 | static void claw_irq_handler(struct ccw_device *cdev, | |
189 | unsigned long intparm, struct irb *irb); | |
190 | static void claw_irq_tasklet ( unsigned long data ); | |
191 | static int claw_release(struct net_device *dev); | |
192 | static void claw_write_retry ( struct chbk * p_ch ); | |
193 | static void claw_write_next ( struct chbk * p_ch ); | |
194 | static void claw_timer ( struct chbk * p_ch ); | |
195 | ||
196 | /* Functions */ | |
197 | static int add_claw_reads(struct net_device *dev, | |
198 | struct ccwbk* p_first, struct ccwbk* p_last); | |
4d284cac HC |
199 | static void ccw_check_return_code (struct ccw_device *cdev, int return_code); |
200 | static void ccw_check_unit_check (struct chbk * p_ch, unsigned char sense ); | |
1da177e4 LT |
201 | static int find_link(struct net_device *dev, char *host_name, char *ws_name ); |
202 | static int claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid); | |
203 | static int init_ccw_bk(struct net_device *dev); | |
204 | static void probe_error( struct ccwgroup_device *cgdev); | |
205 | static struct net_device_stats *claw_stats(struct net_device *dev); | |
4d284cac | 206 | static int pages_to_order_of_mag(int num_of_pages); |
1da177e4 | 207 | static struct sk_buff *claw_pack_skb(struct claw_privbk *privptr); |
1da177e4 | 208 | /* sysfs Functions */ |
3fd3c0a5 YI |
209 | static ssize_t claw_hname_show(struct device *dev, struct device_attribute *attr, char *buf); |
210 | static ssize_t claw_hname_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 | 211 | const char *buf, size_t count); |
3fd3c0a5 YI |
212 | static ssize_t claw_adname_show(struct device *dev, struct device_attribute *attr, char *buf); |
213 | static ssize_t claw_adname_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 | 214 | const char *buf, size_t count); |
3fd3c0a5 YI |
215 | static ssize_t claw_apname_show(struct device *dev, struct device_attribute *attr, char *buf); |
216 | static ssize_t claw_apname_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 | 217 | const char *buf, size_t count); |
3fd3c0a5 YI |
218 | static ssize_t claw_wbuff_show(struct device *dev, struct device_attribute *attr, char *buf); |
219 | static ssize_t claw_wbuff_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 | 220 | const char *buf, size_t count); |
3fd3c0a5 YI |
221 | static ssize_t claw_rbuff_show(struct device *dev, struct device_attribute *attr, char *buf); |
222 | static ssize_t claw_rbuff_write(struct device *dev, struct device_attribute *attr, | |
1da177e4 LT |
223 | const char *buf, size_t count); |
224 | static int claw_add_files(struct device *dev); | |
225 | static void claw_remove_files(struct device *dev); | |
226 | ||
227 | /* Functions for System Validate */ | |
228 | static int claw_process_control( struct net_device *dev, struct ccwbk * p_ccw); | |
229 | static int claw_send_control(struct net_device *dev, __u8 type, __u8 link, | |
230 | __u8 correlator, __u8 rc , char *local_name, char *remote_name); | |
231 | static int claw_snd_conn_req(struct net_device *dev, __u8 link); | |
232 | static int claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl); | |
233 | static int claw_snd_sys_validate_rsp(struct net_device *dev, | |
234 | struct clawctl * p_ctl, __u32 return_code); | |
235 | static int claw_strt_conn_req(struct net_device *dev ); | |
b805da74 AR |
236 | static void claw_strt_read(struct net_device *dev, int lock); |
237 | static void claw_strt_out_IO(struct net_device *dev); | |
238 | static void claw_free_wrt_buf(struct net_device *dev); | |
1da177e4 LT |
239 | |
240 | /* Functions for unpack reads */ | |
b805da74 | 241 | static void unpack_read(struct net_device *dev); |
1da177e4 LT |
242 | |
243 | /* ccwgroup table */ | |
244 | ||
245 | static struct ccwgroup_driver claw_group_driver = { | |
246 | .owner = THIS_MODULE, | |
247 | .name = "claw", | |
248 | .max_slaves = 2, | |
249 | .driver_id = 0xC3D3C1E6, | |
250 | .probe = claw_probe, | |
251 | .remove = claw_remove_device, | |
252 | .set_online = claw_new_device, | |
253 | .set_offline = claw_shutdown_device, | |
254 | }; | |
255 | ||
256 | /* | |
1da177e4 LT |
257 | * Key functions |
258 | */ | |
259 | ||
260 | /*----------------------------------------------------------------* | |
261 | * claw_probe * | |
262 | * this function is called for each CLAW device. * | |
263 | *----------------------------------------------------------------*/ | |
264 | static int | |
265 | claw_probe(struct ccwgroup_device *cgdev) | |
266 | { | |
267 | int rc; | |
268 | struct claw_privbk *privptr=NULL; | |
269 | ||
b805da74 | 270 | CLAW_DBF_TEXT(2, setup, "probe"); |
1da177e4 LT |
271 | if (!get_device(&cgdev->dev)) |
272 | return -ENODEV; | |
88abaab4 | 273 | privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL); |
2b356b46 | 274 | cgdev->dev.driver_data = privptr; |
1da177e4 LT |
275 | if (privptr == NULL) { |
276 | probe_error(cgdev); | |
277 | put_device(&cgdev->dev); | |
b805da74 | 278 | CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); |
1da177e4 LT |
279 | return -ENOMEM; |
280 | } | |
dd00cc48 YP |
281 | privptr->p_mtc_envelope= kzalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL); |
282 | privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL); | |
1da177e4 LT |
283 | if ((privptr->p_mtc_envelope==NULL) || (privptr->p_env==NULL)) { |
284 | probe_error(cgdev); | |
285 | put_device(&cgdev->dev); | |
b805da74 | 286 | CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); |
1da177e4 LT |
287 | return -ENOMEM; |
288 | } | |
1da177e4 LT |
289 | memcpy(privptr->p_env->adapter_name,WS_NAME_NOT_DEF,8); |
290 | memcpy(privptr->p_env->host_name,WS_NAME_NOT_DEF,8); | |
291 | memcpy(privptr->p_env->api_type,WS_NAME_NOT_DEF,8); | |
292 | privptr->p_env->packing = 0; | |
293 | privptr->p_env->write_buffers = 5; | |
294 | privptr->p_env->read_buffers = 5; | |
295 | privptr->p_env->read_size = CLAW_FRAME_SIZE; | |
296 | privptr->p_env->write_size = CLAW_FRAME_SIZE; | |
297 | rc = claw_add_files(&cgdev->dev); | |
298 | if (rc) { | |
299 | probe_error(cgdev); | |
300 | put_device(&cgdev->dev); | |
301 | printk(KERN_WARNING "add_files failed %s %s Exit Line %d \n", | |
2a0217d5 | 302 | dev_name(&cgdev->cdev[0]->dev), __func__, __LINE__); |
b805da74 | 303 | CLAW_DBF_TEXT_(2, setup, "probex%d", rc); |
1da177e4 LT |
304 | return rc; |
305 | } | |
1da177e4 LT |
306 | privptr->p_env->p_priv = privptr; |
307 | cgdev->cdev[0]->handler = claw_irq_handler; | |
308 | cgdev->cdev[1]->handler = claw_irq_handler; | |
b805da74 | 309 | CLAW_DBF_TEXT(2, setup, "prbext 0"); |
1da177e4 LT |
310 | |
311 | return 0; | |
312 | } /* end of claw_probe */ | |
313 | ||
314 | /*-------------------------------------------------------------------* | |
315 | * claw_tx * | |
316 | *-------------------------------------------------------------------*/ | |
317 | ||
318 | static int | |
319 | claw_tx(struct sk_buff *skb, struct net_device *dev) | |
320 | { | |
321 | int rc; | |
6951df34 | 322 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 LT |
323 | unsigned long saveflags; |
324 | struct chbk *p_ch; | |
325 | ||
b805da74 | 326 | CLAW_DBF_TEXT(4, trace, "claw_tx"); |
1da177e4 LT |
327 | p_ch=&privptr->channel[WRITE]; |
328 | if (skb == NULL) { | |
1da177e4 | 329 | privptr->stats.tx_dropped++; |
b805da74 AR |
330 | privptr->stats.tx_errors++; |
331 | CLAW_DBF_TEXT_(2, trace, "clawtx%d", -EIO); | |
1da177e4 LT |
332 | return -EIO; |
333 | } | |
1da177e4 LT |
334 | spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags); |
335 | rc=claw_hw_tx( skb, dev, 1 ); | |
336 | spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags); | |
b805da74 | 337 | CLAW_DBF_TEXT_(4, trace, "clawtx%d", rc); |
1da177e4 LT |
338 | return rc; |
339 | } /* end of claw_tx */ | |
340 | ||
341 | /*------------------------------------------------------------------* | |
342 | * pack the collect queue into an skb and return it * | |
343 | * If not packing just return the top skb from the queue * | |
344 | *------------------------------------------------------------------*/ | |
345 | ||
346 | static struct sk_buff * | |
347 | claw_pack_skb(struct claw_privbk *privptr) | |
348 | { | |
349 | struct sk_buff *new_skb,*held_skb; | |
350 | struct chbk *p_ch = &privptr->channel[WRITE]; | |
351 | struct claw_env *p_env = privptr->p_env; | |
352 | int pkt_cnt,pk_ind,so_far; | |
353 | ||
354 | new_skb = NULL; /* assume no dice */ | |
355 | pkt_cnt = 0; | |
b805da74 | 356 | CLAW_DBF_TEXT(4, trace, "PackSKBe"); |
b03efcfb | 357 | if (!skb_queue_empty(&p_ch->collect_queue)) { |
1da177e4 LT |
358 | /* some data */ |
359 | held_skb = skb_dequeue(&p_ch->collect_queue); | |
1da177e4 | 360 | if (held_skb) |
8e84c801 | 361 | dev_kfree_skb_any(held_skb); |
1da177e4 LT |
362 | else |
363 | return NULL; | |
8e84c801 FP |
364 | if (p_env->packing != DO_PACKED) |
365 | return held_skb; | |
1da177e4 LT |
366 | /* get a new SKB we will pack at least one */ |
367 | new_skb = dev_alloc_skb(p_env->write_size); | |
368 | if (new_skb == NULL) { | |
369 | atomic_inc(&held_skb->users); | |
370 | skb_queue_head(&p_ch->collect_queue,held_skb); | |
371 | return NULL; | |
372 | } | |
373 | /* we have packed packet and a place to put it */ | |
374 | pk_ind = 1; | |
375 | so_far = 0; | |
376 | new_skb->cb[1] = 'P'; /* every skb on queue has pack header */ | |
377 | while ((pk_ind) && (held_skb != NULL)) { | |
378 | if (held_skb->len+so_far <= p_env->write_size-8) { | |
379 | memcpy(skb_put(new_skb,held_skb->len), | |
380 | held_skb->data,held_skb->len); | |
381 | privptr->stats.tx_packets++; | |
382 | so_far += held_skb->len; | |
383 | pkt_cnt++; | |
8e84c801 | 384 | dev_kfree_skb_any(held_skb); |
1da177e4 LT |
385 | held_skb = skb_dequeue(&p_ch->collect_queue); |
386 | if (held_skb) | |
387 | atomic_dec(&held_skb->users); | |
388 | } else { | |
389 | pk_ind = 0; | |
390 | atomic_inc(&held_skb->users); | |
391 | skb_queue_head(&p_ch->collect_queue,held_skb); | |
392 | } | |
393 | } | |
1da177e4 | 394 | } |
b805da74 | 395 | CLAW_DBF_TEXT(4, trace, "PackSKBx"); |
1da177e4 LT |
396 | return new_skb; |
397 | } | |
398 | ||
399 | /*-------------------------------------------------------------------* | |
400 | * claw_change_mtu * | |
401 | * * | |
402 | *-------------------------------------------------------------------*/ | |
403 | ||
404 | static int | |
405 | claw_change_mtu(struct net_device *dev, int new_mtu) | |
406 | { | |
6951df34 | 407 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 | 408 | int buff_size; |
b805da74 | 409 | CLAW_DBF_TEXT(4, trace, "setmtu"); |
1da177e4 LT |
410 | buff_size = privptr->p_env->write_size; |
411 | if ((new_mtu < 60) || (new_mtu > buff_size)) { | |
1da177e4 LT |
412 | return -EINVAL; |
413 | } | |
414 | dev->mtu = new_mtu; | |
1da177e4 LT |
415 | return 0; |
416 | } /* end of claw_change_mtu */ | |
417 | ||
418 | ||
419 | /*-------------------------------------------------------------------* | |
420 | * claw_open * | |
421 | * * | |
422 | *-------------------------------------------------------------------*/ | |
423 | static int | |
424 | claw_open(struct net_device *dev) | |
425 | { | |
426 | ||
427 | int rc; | |
428 | int i; | |
429 | unsigned long saveflags=0; | |
430 | unsigned long parm; | |
431 | struct claw_privbk *privptr; | |
432 | DECLARE_WAITQUEUE(wait, current); | |
433 | struct timer_list timer; | |
434 | struct ccwbk *p_buf; | |
435 | ||
b805da74 | 436 | CLAW_DBF_TEXT(4, trace, "open"); |
6951df34 | 437 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
438 | /* allocate and initialize CCW blocks */ |
439 | if (privptr->buffs_alloc == 0) { | |
440 | rc=init_ccw_bk(dev); | |
441 | if (rc) { | |
b805da74 | 442 | CLAW_DBF_TEXT(2, trace, "openmem"); |
1da177e4 LT |
443 | return -ENOMEM; |
444 | } | |
445 | } | |
446 | privptr->system_validate_comp=0; | |
447 | privptr->release_pend=0; | |
448 | if(strncmp(privptr->p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
449 | privptr->p_env->read_size=DEF_PACK_BUFSIZE; | |
450 | privptr->p_env->write_size=DEF_PACK_BUFSIZE; | |
451 | privptr->p_env->packing=PACKING_ASK; | |
452 | } else { | |
453 | privptr->p_env->packing=0; | |
454 | privptr->p_env->read_size=CLAW_FRAME_SIZE; | |
455 | privptr->p_env->write_size=CLAW_FRAME_SIZE; | |
456 | } | |
457 | claw_set_busy(dev); | |
458 | tasklet_init(&privptr->channel[READ].tasklet, claw_irq_tasklet, | |
459 | (unsigned long) &privptr->channel[READ]); | |
460 | for ( i = 0; i < 2; i++) { | |
b805da74 | 461 | CLAW_DBF_TEXT_(2, trace, "opn_ch%d", i); |
1da177e4 LT |
462 | init_waitqueue_head(&privptr->channel[i].wait); |
463 | /* skb_queue_head_init(&p_ch->io_queue); */ | |
464 | if (i == WRITE) | |
465 | skb_queue_head_init( | |
466 | &privptr->channel[WRITE].collect_queue); | |
467 | privptr->channel[i].flag_a = 0; | |
468 | privptr->channel[i].IO_active = 0; | |
469 | privptr->channel[i].flag &= ~CLAW_TIMER; | |
470 | init_timer(&timer); | |
471 | timer.function = (void *)claw_timer; | |
472 | timer.data = (unsigned long)(&privptr->channel[i]); | |
473 | timer.expires = jiffies + 15*HZ; | |
474 | add_timer(&timer); | |
475 | spin_lock_irqsave(get_ccwdev_lock( | |
476 | privptr->channel[i].cdev), saveflags); | |
477 | parm = (unsigned long) &privptr->channel[i]; | |
478 | privptr->channel[i].claw_state = CLAW_START_HALT_IO; | |
479 | rc = 0; | |
480 | add_wait_queue(&privptr->channel[i].wait, &wait); | |
481 | rc = ccw_device_halt( | |
482 | (struct ccw_device *)privptr->channel[i].cdev,parm); | |
483 | set_current_state(TASK_INTERRUPTIBLE); | |
484 | spin_unlock_irqrestore( | |
485 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
486 | schedule(); | |
487 | set_current_state(TASK_RUNNING); | |
488 | remove_wait_queue(&privptr->channel[i].wait, &wait); | |
489 | if(rc != 0) | |
490 | ccw_check_return_code(privptr->channel[i].cdev, rc); | |
491 | if((privptr->channel[i].flag & CLAW_TIMER) == 0x00) | |
492 | del_timer(&timer); | |
493 | } | |
494 | if ((((privptr->channel[READ].last_dstat | | |
495 | privptr->channel[WRITE].last_dstat) & | |
496 | ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) || | |
497 | (((privptr->channel[READ].flag | | |
498 | privptr->channel[WRITE].flag) & CLAW_TIMER) != 0x00)) { | |
1da177e4 | 499 | printk(KERN_INFO "%s: remote side is not ready\n", dev->name); |
b805da74 | 500 | CLAW_DBF_TEXT(2, trace, "notrdy"); |
1da177e4 LT |
501 | |
502 | for ( i = 0; i < 2; i++) { | |
503 | spin_lock_irqsave( | |
504 | get_ccwdev_lock(privptr->channel[i].cdev), | |
505 | saveflags); | |
506 | parm = (unsigned long) &privptr->channel[i]; | |
507 | privptr->channel[i].claw_state = CLAW_STOP; | |
508 | rc = ccw_device_halt( | |
509 | (struct ccw_device *)&privptr->channel[i].cdev, | |
510 | parm); | |
511 | spin_unlock_irqrestore( | |
512 | get_ccwdev_lock(privptr->channel[i].cdev), | |
513 | saveflags); | |
514 | if (rc != 0) { | |
515 | ccw_check_return_code( | |
516 | privptr->channel[i].cdev, rc); | |
517 | } | |
518 | } | |
519 | free_pages((unsigned long)privptr->p_buff_ccw, | |
520 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
521 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
522 | free_pages((unsigned long)privptr->p_buff_read, | |
523 | (int)pages_to_order_of_mag( | |
524 | privptr->p_buff_read_num)); | |
525 | } | |
526 | else { | |
527 | p_buf=privptr->p_read_active_first; | |
528 | while (p_buf!=NULL) { | |
529 | free_pages((unsigned long)p_buf->p_buffer, | |
530 | (int)pages_to_order_of_mag( | |
531 | privptr->p_buff_pages_perread )); | |
532 | p_buf=p_buf->next; | |
533 | } | |
534 | } | |
535 | if (privptr->p_env->write_size < PAGE_SIZE ) { | |
536 | free_pages((unsigned long)privptr->p_buff_write, | |
537 | (int)pages_to_order_of_mag( | |
538 | privptr->p_buff_write_num)); | |
539 | } | |
540 | else { | |
541 | p_buf=privptr->p_write_active_first; | |
542 | while (p_buf!=NULL) { | |
543 | free_pages((unsigned long)p_buf->p_buffer, | |
544 | (int)pages_to_order_of_mag( | |
545 | privptr->p_buff_pages_perwrite )); | |
546 | p_buf=p_buf->next; | |
547 | } | |
548 | } | |
549 | privptr->buffs_alloc = 0; | |
550 | privptr->channel[READ].flag= 0x00; | |
551 | privptr->channel[WRITE].flag = 0x00; | |
552 | privptr->p_buff_ccw=NULL; | |
553 | privptr->p_buff_read=NULL; | |
554 | privptr->p_buff_write=NULL; | |
555 | claw_clear_busy(dev); | |
b805da74 | 556 | CLAW_DBF_TEXT(2, trace, "open EIO"); |
1da177e4 LT |
557 | return -EIO; |
558 | } | |
559 | ||
560 | /* Send SystemValidate command */ | |
561 | ||
562 | claw_clear_busy(dev); | |
b805da74 | 563 | CLAW_DBF_TEXT(4, trace, "openok"); |
1da177e4 LT |
564 | return 0; |
565 | } /* end of claw_open */ | |
566 | ||
567 | /*-------------------------------------------------------------------* | |
568 | * * | |
569 | * claw_irq_handler * | |
570 | * * | |
571 | *--------------------------------------------------------------------*/ | |
572 | static void | |
573 | claw_irq_handler(struct ccw_device *cdev, | |
574 | unsigned long intparm, struct irb *irb) | |
575 | { | |
576 | struct chbk *p_ch = NULL; | |
577 | struct claw_privbk *privptr = NULL; | |
578 | struct net_device *dev = NULL; | |
579 | struct claw_env *p_env; | |
580 | struct chbk *p_ch_r=NULL; | |
581 | ||
b805da74 | 582 | CLAW_DBF_TEXT(4, trace, "clawirq"); |
1da177e4 LT |
583 | /* Bypass all 'unsolicited interrupts' */ |
584 | if (!cdev->dev.driver_data) { | |
585 | printk(KERN_WARNING "claw: unsolicited interrupt for device:" | |
586 | "%s received c-%02x d-%02x\n", | |
2a0217d5 | 587 | dev_name(&cdev->dev), irb->scsw.cmd.cstat, |
23d805b6 | 588 | irb->scsw.cmd.dstat); |
b805da74 | 589 | CLAW_DBF_TEXT(2, trace, "badirq"); |
1da177e4 LT |
590 | return; |
591 | } | |
592 | privptr = (struct claw_privbk *)cdev->dev.driver_data; | |
593 | ||
594 | /* Try to extract channel from driver data. */ | |
595 | if (privptr->channel[READ].cdev == cdev) | |
596 | p_ch = &privptr->channel[READ]; | |
597 | else if (privptr->channel[WRITE].cdev == cdev) | |
598 | p_ch = &privptr->channel[WRITE]; | |
599 | else { | |
600 | printk(KERN_WARNING "claw: Can't determine channel for " | |
2a0217d5 | 601 | "interrupt, device %s\n", dev_name(&cdev->dev)); |
b805da74 | 602 | CLAW_DBF_TEXT(2, trace, "badchan"); |
1da177e4 LT |
603 | return; |
604 | } | |
b805da74 | 605 | CLAW_DBF_TEXT_(4, trace, "IRQCH=%d", p_ch->flag); |
1da177e4 LT |
606 | |
607 | dev = (struct net_device *) (p_ch->ndev); | |
608 | p_env=privptr->p_env; | |
609 | ||
1da177e4 LT |
610 | /* Copy interruption response block. */ |
611 | memcpy(p_ch->irb, irb, sizeof(struct irb)); | |
612 | ||
b805da74 | 613 | /* Check for good subchannel return code, otherwise info message */ |
23d805b6 | 614 | if (irb->scsw.cmd.cstat && !(irb->scsw.cmd.cstat & SCHN_STAT_PCI)) { |
1da177e4 LT |
615 | printk(KERN_INFO "%s: subchannel check for device: %04x -" |
616 | " Sch Stat %02x Dev Stat %02x CPA - %04x\n", | |
617 | dev->name, p_ch->devno, | |
23d805b6 PO |
618 | irb->scsw.cmd.cstat, irb->scsw.cmd.dstat, |
619 | irb->scsw.cmd.cpa); | |
b805da74 | 620 | CLAW_DBF_TEXT(2, trace, "chanchk"); |
1da177e4 LT |
621 | /* return; */ |
622 | } | |
623 | ||
624 | /* Check the reason-code of a unit check */ | |
23d805b6 | 625 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
1da177e4 | 626 | ccw_check_unit_check(p_ch, irb->ecw[0]); |
1da177e4 LT |
627 | |
628 | /* State machine to bring the connection up, down and to restart */ | |
23d805b6 | 629 | p_ch->last_dstat = irb->scsw.cmd.dstat; |
1da177e4 LT |
630 | |
631 | switch (p_ch->claw_state) { | |
b805da74 AR |
632 | case CLAW_STOP:/* HALT_IO by claw_release (halt sequence) */ |
633 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
634 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
635 | (p_ch->irb->scsw.cmd.stctl == | |
636 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) | |
637 | return; | |
638 | wake_up(&p_ch->wait); /* wake up claw_release */ | |
639 | CLAW_DBF_TEXT(4, trace, "stop"); | |
640 | return; | |
641 | case CLAW_START_HALT_IO: /* HALT_IO issued by claw_open */ | |
642 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
643 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
644 | (p_ch->irb->scsw.cmd.stctl == | |
645 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
646 | CLAW_DBF_TEXT(4, trace, "haltio"); | |
647 | return; | |
648 | } | |
649 | if (p_ch->flag == CLAW_READ) { | |
650 | p_ch->claw_state = CLAW_START_READ; | |
651 | wake_up(&p_ch->wait); /* wake claw_open (READ)*/ | |
652 | } else if (p_ch->flag == CLAW_WRITE) { | |
653 | p_ch->claw_state = CLAW_START_WRITE; | |
654 | /* send SYSTEM_VALIDATE */ | |
655 | claw_strt_read(dev, LOCK_NO); | |
656 | claw_send_control(dev, | |
657 | SYSTEM_VALIDATE_REQUEST, | |
658 | 0, 0, 0, | |
659 | p_env->host_name, | |
660 | p_env->adapter_name); | |
661 | } else { | |
662 | printk(KERN_WARNING "claw: unsolicited " | |
663 | "interrupt for device:" | |
664 | "%s received c-%02x d-%02x\n", | |
2a0217d5 | 665 | dev_name(&cdev->dev), |
b805da74 AR |
666 | irb->scsw.cmd.cstat, |
667 | irb->scsw.cmd.dstat); | |
668 | return; | |
669 | } | |
670 | CLAW_DBF_TEXT(4, trace, "haltio"); | |
671 | return; | |
672 | case CLAW_START_READ: | |
673 | CLAW_DBF_TEXT(4, trace, "ReadIRQ"); | |
674 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { | |
675 | clear_bit(0, (void *)&p_ch->IO_active); | |
676 | if ((p_ch->irb->ecw[0] & 0x41) == 0x41 || | |
677 | (p_ch->irb->ecw[0] & 0x40) == 0x40 || | |
678 | (p_ch->irb->ecw[0]) == 0) { | |
679 | privptr->stats.rx_errors++; | |
680 | printk(KERN_INFO "%s: Restart is " | |
681 | "required after remote " | |
682 | "side recovers \n", | |
683 | dev->name); | |
684 | } | |
685 | CLAW_DBF_TEXT(4, trace, "notrdy"); | |
686 | return; | |
687 | } | |
688 | if ((p_ch->irb->scsw.cmd.cstat & SCHN_STAT_PCI) && | |
689 | (p_ch->irb->scsw.cmd.dstat == 0)) { | |
690 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
691 | (void *)&p_ch->flag_a) == 0) | |
692 | tasklet_schedule(&p_ch->tasklet); | |
1da177e4 | 693 | else |
b805da74 AR |
694 | CLAW_DBF_TEXT(4, trace, "PCINoBH"); |
695 | CLAW_DBF_TEXT(4, trace, "PCI_read"); | |
696 | return; | |
697 | } | |
698 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
699 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
700 | (p_ch->irb->scsw.cmd.stctl == | |
701 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
702 | CLAW_DBF_TEXT(4, trace, "SPend_rd"); | |
703 | return; | |
704 | } | |
705 | clear_bit(0, (void *)&p_ch->IO_active); | |
706 | claw_clearbit_busy(TB_RETRY, dev); | |
707 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
708 | (void *)&p_ch->flag_a) == 0) | |
709 | tasklet_schedule(&p_ch->tasklet); | |
710 | else | |
711 | CLAW_DBF_TEXT(4, trace, "RdBHAct"); | |
712 | CLAW_DBF_TEXT(4, trace, "RdIRQXit"); | |
713 | return; | |
714 | case CLAW_START_WRITE: | |
715 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { | |
716 | printk(KERN_INFO "%s: Unit Check Occured in " | |
717 | "write channel\n", dev->name); | |
718 | clear_bit(0, (void *)&p_ch->IO_active); | |
719 | if (p_ch->irb->ecw[0] & 0x80) { | |
720 | printk(KERN_INFO "%s: Resetting Event " | |
721 | "occurred:\n", dev->name); | |
722 | init_timer(&p_ch->timer); | |
723 | p_ch->timer.function = | |
724 | (void *)claw_write_retry; | |
725 | p_ch->timer.data = (unsigned long)p_ch; | |
726 | p_ch->timer.expires = jiffies + 10*HZ; | |
727 | add_timer(&p_ch->timer); | |
728 | printk(KERN_INFO "%s: write connection " | |
729 | "restarting\n", dev->name); | |
730 | } | |
731 | CLAW_DBF_TEXT(4, trace, "rstrtwrt"); | |
732 | return; | |
733 | } | |
734 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) { | |
735 | clear_bit(0, (void *)&p_ch->IO_active); | |
736 | printk(KERN_INFO "%s: Unit Exception " | |
737 | "Occured in write channel\n", | |
738 | dev->name); | |
739 | } | |
740 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
741 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
742 | (p_ch->irb->scsw.cmd.stctl == | |
743 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
744 | CLAW_DBF_TEXT(4, trace, "writeUE"); | |
745 | return; | |
746 | } | |
747 | clear_bit(0, (void *)&p_ch->IO_active); | |
748 | if (claw_test_and_setbit_busy(TB_TX, dev) == 0) { | |
749 | claw_write_next(p_ch); | |
750 | claw_clearbit_busy(TB_TX, dev); | |
751 | claw_clear_busy(dev); | |
752 | } | |
753 | p_ch_r = (struct chbk *)&privptr->channel[READ]; | |
754 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
755 | (void *)&p_ch_r->flag_a) == 0) | |
756 | tasklet_schedule(&p_ch_r->tasklet); | |
757 | CLAW_DBF_TEXT(4, trace, "StWtExit"); | |
758 | return; | |
759 | default: | |
760 | printk(KERN_WARNING "%s: wrong selection code - irq " | |
761 | "state=%d\n", dev->name, p_ch->claw_state); | |
762 | CLAW_DBF_TEXT(2, trace, "badIRQ"); | |
763 | return; | |
1da177e4 LT |
764 | } |
765 | ||
766 | } /* end of claw_irq_handler */ | |
767 | ||
768 | ||
769 | /*-------------------------------------------------------------------* | |
770 | * claw_irq_tasklet * | |
771 | * * | |
772 | *--------------------------------------------------------------------*/ | |
773 | static void | |
774 | claw_irq_tasklet ( unsigned long data ) | |
775 | { | |
776 | struct chbk * p_ch; | |
777 | struct net_device *dev; | |
778 | struct claw_privbk * privptr; | |
779 | ||
780 | p_ch = (struct chbk *) data; | |
781 | dev = (struct net_device *)p_ch->ndev; | |
b805da74 | 782 | CLAW_DBF_TEXT(4, trace, "IRQtask"); |
6951df34 | 783 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
784 | unpack_read(dev); |
785 | clear_bit(CLAW_BH_ACTIVE, (void *)&p_ch->flag_a); | |
b805da74 | 786 | CLAW_DBF_TEXT(4, trace, "TskletXt"); |
1da177e4 LT |
787 | return; |
788 | } /* end of claw_irq_bh */ | |
789 | ||
790 | /*-------------------------------------------------------------------* | |
791 | * claw_release * | |
792 | * * | |
793 | *--------------------------------------------------------------------*/ | |
794 | static int | |
795 | claw_release(struct net_device *dev) | |
796 | { | |
797 | int rc; | |
798 | int i; | |
799 | unsigned long saveflags; | |
800 | unsigned long parm; | |
801 | struct claw_privbk *privptr; | |
802 | DECLARE_WAITQUEUE(wait, current); | |
803 | struct ccwbk* p_this_ccw; | |
804 | struct ccwbk* p_buf; | |
805 | ||
806 | if (!dev) | |
807 | return 0; | |
6951df34 | 808 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
809 | if (!privptr) |
810 | return 0; | |
b805da74 | 811 | CLAW_DBF_TEXT(4, trace, "release"); |
1da177e4 LT |
812 | privptr->release_pend=1; |
813 | claw_setbit_busy(TB_STOP,dev); | |
814 | for ( i = 1; i >=0 ; i--) { | |
815 | spin_lock_irqsave( | |
816 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
817 | /* del_timer(&privptr->channel[READ].timer); */ | |
818 | privptr->channel[i].claw_state = CLAW_STOP; | |
819 | privptr->channel[i].IO_active = 0; | |
820 | parm = (unsigned long) &privptr->channel[i]; | |
821 | if (i == WRITE) | |
822 | claw_purge_skb_queue( | |
823 | &privptr->channel[WRITE].collect_queue); | |
824 | rc = ccw_device_halt (privptr->channel[i].cdev, parm); | |
825 | if (privptr->system_validate_comp==0x00) /* never opened? */ | |
826 | init_waitqueue_head(&privptr->channel[i].wait); | |
827 | add_wait_queue(&privptr->channel[i].wait, &wait); | |
828 | set_current_state(TASK_INTERRUPTIBLE); | |
829 | spin_unlock_irqrestore( | |
830 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
831 | schedule(); | |
832 | set_current_state(TASK_RUNNING); | |
833 | remove_wait_queue(&privptr->channel[i].wait, &wait); | |
834 | if (rc != 0) { | |
835 | ccw_check_return_code(privptr->channel[i].cdev, rc); | |
836 | } | |
837 | } | |
838 | if (privptr->pk_skb != NULL) { | |
8e84c801 | 839 | dev_kfree_skb_any(privptr->pk_skb); |
1da177e4 LT |
840 | privptr->pk_skb = NULL; |
841 | } | |
842 | if(privptr->buffs_alloc != 1) { | |
b805da74 | 843 | CLAW_DBF_TEXT(4, trace, "none2fre"); |
1da177e4 LT |
844 | return 0; |
845 | } | |
b805da74 | 846 | CLAW_DBF_TEXT(4, trace, "freebufs"); |
1da177e4 LT |
847 | if (privptr->p_buff_ccw != NULL) { |
848 | free_pages((unsigned long)privptr->p_buff_ccw, | |
849 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
850 | } | |
b805da74 | 851 | CLAW_DBF_TEXT(4, trace, "freeread"); |
1da177e4 LT |
852 | if (privptr->p_env->read_size < PAGE_SIZE) { |
853 | if (privptr->p_buff_read != NULL) { | |
854 | free_pages((unsigned long)privptr->p_buff_read, | |
855 | (int)pages_to_order_of_mag(privptr->p_buff_read_num)); | |
856 | } | |
857 | } | |
858 | else { | |
859 | p_buf=privptr->p_read_active_first; | |
860 | while (p_buf!=NULL) { | |
861 | free_pages((unsigned long)p_buf->p_buffer, | |
862 | (int)pages_to_order_of_mag( | |
863 | privptr->p_buff_pages_perread )); | |
864 | p_buf=p_buf->next; | |
865 | } | |
866 | } | |
b805da74 | 867 | CLAW_DBF_TEXT(4, trace, "freewrit"); |
1da177e4 LT |
868 | if (privptr->p_env->write_size < PAGE_SIZE ) { |
869 | free_pages((unsigned long)privptr->p_buff_write, | |
870 | (int)pages_to_order_of_mag(privptr->p_buff_write_num)); | |
871 | } | |
872 | else { | |
873 | p_buf=privptr->p_write_active_first; | |
874 | while (p_buf!=NULL) { | |
875 | free_pages((unsigned long)p_buf->p_buffer, | |
876 | (int)pages_to_order_of_mag( | |
877 | privptr->p_buff_pages_perwrite )); | |
878 | p_buf=p_buf->next; | |
879 | } | |
880 | } | |
b805da74 | 881 | CLAW_DBF_TEXT(4, trace, "clearptr"); |
1da177e4 LT |
882 | privptr->buffs_alloc = 0; |
883 | privptr->p_buff_ccw=NULL; | |
884 | privptr->p_buff_read=NULL; | |
885 | privptr->p_buff_write=NULL; | |
886 | privptr->system_validate_comp=0; | |
887 | privptr->release_pend=0; | |
888 | /* Remove any writes that were pending and reset all reads */ | |
889 | p_this_ccw=privptr->p_read_active_first; | |
890 | while (p_this_ccw!=NULL) { | |
891 | p_this_ccw->header.length=0xffff; | |
892 | p_this_ccw->header.opcode=0xff; | |
893 | p_this_ccw->header.flag=0x00; | |
894 | p_this_ccw=p_this_ccw->next; | |
895 | } | |
896 | ||
897 | while (privptr->p_write_active_first!=NULL) { | |
898 | p_this_ccw=privptr->p_write_active_first; | |
899 | p_this_ccw->header.flag=CLAW_PENDING; | |
900 | privptr->p_write_active_first=p_this_ccw->next; | |
901 | p_this_ccw->next=privptr->p_write_free_chain; | |
902 | privptr->p_write_free_chain=p_this_ccw; | |
903 | ++privptr->write_free_count; | |
904 | } | |
905 | privptr->p_write_active_last=NULL; | |
906 | privptr->mtc_logical_link = -1; | |
907 | privptr->mtc_skipping = 1; | |
908 | privptr->mtc_offset=0; | |
909 | ||
910 | if (((privptr->channel[READ].last_dstat | | |
911 | privptr->channel[WRITE].last_dstat) & | |
912 | ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) { | |
913 | printk(KERN_WARNING "%s: channel problems during close - " | |
914 | "read: %02x - write: %02x\n", | |
915 | dev->name, | |
916 | privptr->channel[READ].last_dstat, | |
917 | privptr->channel[WRITE].last_dstat); | |
b805da74 | 918 | CLAW_DBF_TEXT(2, trace, "badclose"); |
1da177e4 | 919 | } |
b805da74 | 920 | CLAW_DBF_TEXT(4, trace, "rlsexit"); |
1da177e4 LT |
921 | return 0; |
922 | } /* end of claw_release */ | |
923 | ||
1da177e4 LT |
924 | /*-------------------------------------------------------------------* |
925 | * claw_write_retry * | |
926 | * * | |
927 | *--------------------------------------------------------------------*/ | |
928 | ||
929 | static void | |
930 | claw_write_retry ( struct chbk *p_ch ) | |
931 | { | |
932 | ||
933 | struct net_device *dev=p_ch->ndev; | |
934 | ||
b805da74 | 935 | CLAW_DBF_TEXT(4, trace, "w_retry"); |
1da177e4 | 936 | if (p_ch->claw_state == CLAW_STOP) { |
1da177e4 LT |
937 | return; |
938 | } | |
1da177e4 | 939 | claw_strt_out_IO( dev ); |
b805da74 | 940 | CLAW_DBF_TEXT(4, trace, "rtry_xit"); |
1da177e4 LT |
941 | return; |
942 | } /* end of claw_write_retry */ | |
943 | ||
944 | ||
945 | /*-------------------------------------------------------------------* | |
946 | * claw_write_next * | |
947 | * * | |
948 | *--------------------------------------------------------------------*/ | |
949 | ||
950 | static void | |
951 | claw_write_next ( struct chbk * p_ch ) | |
952 | { | |
953 | ||
954 | struct net_device *dev; | |
955 | struct claw_privbk *privptr=NULL; | |
956 | struct sk_buff *pk_skb; | |
957 | int rc; | |
958 | ||
b805da74 | 959 | CLAW_DBF_TEXT(4, trace, "claw_wrt"); |
1da177e4 LT |
960 | if (p_ch->claw_state == CLAW_STOP) |
961 | return; | |
962 | dev = (struct net_device *) p_ch->ndev; | |
6951df34 | 963 | privptr = (struct claw_privbk *) dev->ml_priv; |
1da177e4 LT |
964 | claw_free_wrt_buf( dev ); |
965 | if ((privptr->write_free_count > 0) && | |
b03efcfb | 966 | !skb_queue_empty(&p_ch->collect_queue)) { |
1da177e4 LT |
967 | pk_skb = claw_pack_skb(privptr); |
968 | while (pk_skb != NULL) { | |
969 | rc = claw_hw_tx( pk_skb, dev,1); | |
970 | if (privptr->write_free_count > 0) { | |
971 | pk_skb = claw_pack_skb(privptr); | |
972 | } else | |
973 | pk_skb = NULL; | |
974 | } | |
975 | } | |
976 | if (privptr->p_write_active_first!=NULL) { | |
977 | claw_strt_out_IO(dev); | |
978 | } | |
1da177e4 LT |
979 | return; |
980 | } /* end of claw_write_next */ | |
981 | ||
982 | /*-------------------------------------------------------------------* | |
983 | * * | |
984 | * claw_timer * | |
985 | *--------------------------------------------------------------------*/ | |
986 | ||
987 | static void | |
988 | claw_timer ( struct chbk * p_ch ) | |
989 | { | |
b805da74 | 990 | CLAW_DBF_TEXT(4, trace, "timer"); |
1da177e4 LT |
991 | p_ch->flag |= CLAW_TIMER; |
992 | wake_up(&p_ch->wait); | |
1da177e4 LT |
993 | return; |
994 | } /* end of claw_timer */ | |
995 | ||
1da177e4 LT |
996 | /* |
997 | * | |
998 | * functions | |
999 | */ | |
1000 | ||
1001 | ||
1002 | /*-------------------------------------------------------------------* | |
1003 | * * | |
1004 | * pages_to_order_of_mag * | |
1005 | * * | |
1006 | * takes a number of pages from 1 to 512 and returns the * | |
1007 | * log(num_pages)/log(2) get_free_pages() needs a base 2 order * | |
1008 | * of magnitude get_free_pages() has an upper order of 9 * | |
1009 | *--------------------------------------------------------------------*/ | |
1010 | ||
4d284cac | 1011 | static int |
1da177e4 LT |
1012 | pages_to_order_of_mag(int num_of_pages) |
1013 | { | |
1014 | int order_of_mag=1; /* assume 2 pages */ | |
1015 | int nump=2; | |
b805da74 AR |
1016 | |
1017 | CLAW_DBF_TEXT_(5, trace, "pages%d", num_of_pages); | |
1da177e4 LT |
1018 | if (num_of_pages == 1) {return 0; } /* magnitude of 0 = 1 page */ |
1019 | /* 512 pages = 2Meg on 4k page systems */ | |
1020 | if (num_of_pages >= 512) {return 9; } | |
1021 | /* we have two or more pages order is at least 1 */ | |
1022 | for (nump=2 ;nump <= 512;nump*=2) { | |
1023 | if (num_of_pages <= nump) | |
1024 | break; | |
1025 | order_of_mag +=1; | |
1026 | } | |
1027 | if (order_of_mag > 9) { order_of_mag = 9; } /* I know it's paranoid */ | |
b805da74 | 1028 | CLAW_DBF_TEXT_(5, trace, "mag%d", order_of_mag); |
1da177e4 LT |
1029 | return order_of_mag; |
1030 | } | |
1031 | ||
1032 | /*-------------------------------------------------------------------* | |
1033 | * * | |
1034 | * add_claw_reads * | |
1035 | * * | |
1036 | *--------------------------------------------------------------------*/ | |
1037 | static int | |
1038 | add_claw_reads(struct net_device *dev, struct ccwbk* p_first, | |
1039 | struct ccwbk* p_last) | |
1040 | { | |
1041 | struct claw_privbk *privptr; | |
1042 | struct ccw1 temp_ccw; | |
1043 | struct endccw * p_end; | |
b805da74 | 1044 | CLAW_DBF_TEXT(4, trace, "addreads"); |
6951df34 | 1045 | privptr = dev->ml_priv; |
1da177e4 LT |
1046 | p_end = privptr->p_end_ccw; |
1047 | ||
1048 | /* first CCW and last CCW contains a new set of read channel programs | |
1049 | * to apend the running channel programs | |
1050 | */ | |
1051 | if ( p_first==NULL) { | |
b805da74 | 1052 | CLAW_DBF_TEXT(4, trace, "addexit"); |
1da177e4 LT |
1053 | return 0; |
1054 | } | |
1055 | ||
1056 | /* set up ending CCW sequence for this segment */ | |
1057 | if (p_end->read1) { | |
1058 | p_end->read1=0x00; /* second ending CCW is now active */ | |
1059 | /* reset ending CCWs and setup TIC CCWs */ | |
1060 | p_end->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1061 | p_end->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1062 | p_last->r_TIC_1.cda =(__u32)__pa(&p_end->read2_nop1); | |
1063 | p_last->r_TIC_2.cda =(__u32)__pa(&p_end->read2_nop1); | |
1064 | p_end->read2_nop2.cda=0; | |
1065 | p_end->read2_nop2.count=1; | |
1066 | } | |
1067 | else { | |
1068 | p_end->read1=0x01; /* first ending CCW is now active */ | |
1069 | /* reset ending CCWs and setup TIC CCWs */ | |
1070 | p_end->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1071 | p_end->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1072 | p_last->r_TIC_1.cda = (__u32)__pa(&p_end->read1_nop1); | |
1073 | p_last->r_TIC_2.cda = (__u32)__pa(&p_end->read1_nop1); | |
1074 | p_end->read1_nop2.cda=0; | |
1075 | p_end->read1_nop2.count=1; | |
1076 | } | |
1077 | ||
1078 | if ( privptr-> p_read_active_first ==NULL ) { | |
1da177e4 LT |
1079 | privptr-> p_read_active_first= p_first; /* set new first */ |
1080 | privptr-> p_read_active_last = p_last; /* set new last */ | |
1081 | } | |
1082 | else { | |
1083 | ||
1da177e4 LT |
1084 | /* set up TIC ccw */ |
1085 | temp_ccw.cda= (__u32)__pa(&p_first->read); | |
1086 | temp_ccw.count=0; | |
1087 | temp_ccw.flags=0; | |
1088 | temp_ccw.cmd_code = CCW_CLAW_CMD_TIC; | |
1089 | ||
1090 | ||
1091 | if (p_end->read1) { | |
1092 | ||
1093 | /* first set of CCW's is chained to the new read */ | |
1094 | /* chain, so the second set is chained to the active chain. */ | |
1095 | /* Therefore modify the second set to point to the new */ | |
1096 | /* read chain set up TIC CCWs */ | |
1097 | /* make sure we update the CCW so channel doesn't fetch it */ | |
1098 | /* when it's only half done */ | |
1099 | memcpy( &p_end->read2_nop2, &temp_ccw , | |
1100 | sizeof(struct ccw1)); | |
1101 | privptr->p_read_active_last->r_TIC_1.cda= | |
1102 | (__u32)__pa(&p_first->read); | |
1103 | privptr->p_read_active_last->r_TIC_2.cda= | |
1104 | (__u32)__pa(&p_first->read); | |
1105 | } | |
1106 | else { | |
1107 | /* make sure we update the CCW so channel doesn't */ | |
1108 | /* fetch it when it is only half done */ | |
1109 | memcpy( &p_end->read1_nop2, &temp_ccw , | |
1110 | sizeof(struct ccw1)); | |
1111 | privptr->p_read_active_last->r_TIC_1.cda= | |
1112 | (__u32)__pa(&p_first->read); | |
1113 | privptr->p_read_active_last->r_TIC_2.cda= | |
1114 | (__u32)__pa(&p_first->read); | |
1115 | } | |
1116 | /* chain in new set of blocks */ | |
1117 | privptr->p_read_active_last->next = p_first; | |
1118 | privptr->p_read_active_last=p_last; | |
1119 | } /* end of if ( privptr-> p_read_active_first ==NULL) */ | |
b805da74 | 1120 | CLAW_DBF_TEXT(4, trace, "addexit"); |
1da177e4 LT |
1121 | return 0; |
1122 | } /* end of add_claw_reads */ | |
1123 | ||
1124 | /*-------------------------------------------------------------------* | |
1125 | * ccw_check_return_code * | |
1126 | * * | |
1127 | *-------------------------------------------------------------------*/ | |
1128 | ||
4d284cac | 1129 | static void |
1da177e4 LT |
1130 | ccw_check_return_code(struct ccw_device *cdev, int return_code) |
1131 | { | |
b805da74 | 1132 | CLAW_DBF_TEXT(4, trace, "ccwret"); |
1da177e4 LT |
1133 | if (return_code != 0) { |
1134 | switch (return_code) { | |
b805da74 AR |
1135 | case -EBUSY: /* BUSY is a transient state no action needed */ |
1136 | break; | |
1137 | case -ENODEV: | |
1138 | printk(KERN_EMERG "%s: Missing device called " | |
2a0217d5 | 1139 | "for IO ENODEV\n", dev_name(&cdev->dev)); |
b805da74 AR |
1140 | break; |
1141 | case -EIO: | |
1142 | printk(KERN_EMERG "%s: Status pending... EIO \n", | |
2a0217d5 | 1143 | dev_name(&cdev->dev)); |
b805da74 AR |
1144 | break; |
1145 | case -EINVAL: | |
1146 | printk(KERN_EMERG "%s: Invalid Dev State EINVAL \n", | |
2a0217d5 | 1147 | dev_name(&cdev->dev)); |
b805da74 AR |
1148 | break; |
1149 | default: | |
1150 | printk(KERN_EMERG "%s: Unknown error in " | |
2a0217d5 KS |
1151 | "Do_IO %d\n", dev_name(&cdev->dev), |
1152 | return_code); | |
b805da74 AR |
1153 | } |
1154 | } | |
1155 | CLAW_DBF_TEXT(4, trace, "ccwret"); | |
1da177e4 LT |
1156 | } /* end of ccw_check_return_code */ |
1157 | ||
1158 | /*-------------------------------------------------------------------* | |
1159 | * ccw_check_unit_check * | |
1160 | *--------------------------------------------------------------------*/ | |
1161 | ||
4d284cac | 1162 | static void |
1da177e4 LT |
1163 | ccw_check_unit_check(struct chbk * p_ch, unsigned char sense ) |
1164 | { | |
b805da74 | 1165 | struct net_device *ndev = p_ch->ndev; |
1da177e4 | 1166 | |
b805da74 | 1167 | CLAW_DBF_TEXT(4, trace, "unitchek"); |
1da177e4 | 1168 | printk(KERN_INFO "%s: Unit Check with sense byte:0x%04x\n", |
b805da74 | 1169 | ndev->name, sense); |
1da177e4 LT |
1170 | |
1171 | if (sense & 0x40) { | |
1172 | if (sense & 0x01) { | |
1173 | printk(KERN_WARNING "%s: Interface disconnect or " | |
1174 | "Selective reset " | |
b805da74 | 1175 | "occurred (remote side)\n", ndev->name); |
1da177e4 LT |
1176 | } |
1177 | else { | |
1178 | printk(KERN_WARNING "%s: System reset occured" | |
b805da74 | 1179 | " (remote side)\n", ndev->name); |
1da177e4 LT |
1180 | } |
1181 | } | |
1182 | else if (sense & 0x20) { | |
1183 | if (sense & 0x04) { | |
1184 | printk(KERN_WARNING "%s: Data-streaming " | |
b805da74 | 1185 | "timeout)\n", ndev->name); |
1da177e4 LT |
1186 | } |
1187 | else { | |
1188 | printk(KERN_WARNING "%s: Data-transfer parity" | |
b805da74 | 1189 | " error\n", ndev->name); |
1da177e4 LT |
1190 | } |
1191 | } | |
1192 | else if (sense & 0x10) { | |
1193 | if (sense & 0x20) { | |
1194 | printk(KERN_WARNING "%s: Hardware malfunction " | |
b805da74 | 1195 | "(remote side)\n", ndev->name); |
1da177e4 LT |
1196 | } |
1197 | else { | |
1198 | printk(KERN_WARNING "%s: read-data parity error " | |
b805da74 | 1199 | "(remote side)\n", ndev->name); |
1da177e4 LT |
1200 | } |
1201 | } | |
1202 | ||
1da177e4 LT |
1203 | } /* end of ccw_check_unit_check */ |
1204 | ||
1da177e4 LT |
1205 | /*-------------------------------------------------------------------* |
1206 | * find_link * | |
1207 | *--------------------------------------------------------------------*/ | |
1208 | static int | |
1209 | find_link(struct net_device *dev, char *host_name, char *ws_name ) | |
1210 | { | |
1211 | struct claw_privbk *privptr; | |
1212 | struct claw_env *p_env; | |
1213 | int rc=0; | |
1214 | ||
b805da74 | 1215 | CLAW_DBF_TEXT(2, setup, "findlink"); |
6951df34 | 1216 | privptr = dev->ml_priv; |
1da177e4 LT |
1217 | p_env=privptr->p_env; |
1218 | switch (p_env->packing) | |
1219 | { | |
1220 | case PACKING_ASK: | |
1221 | if ((memcmp(WS_APPL_NAME_PACKED, host_name, 8)!=0) || | |
1222 | (memcmp(WS_APPL_NAME_PACKED, ws_name, 8)!=0 )) | |
1223 | rc = EINVAL; | |
1224 | break; | |
1225 | case DO_PACKED: | |
1226 | case PACK_SEND: | |
1227 | if ((memcmp(WS_APPL_NAME_IP_NAME, host_name, 8)!=0) || | |
1228 | (memcmp(WS_APPL_NAME_IP_NAME, ws_name, 8)!=0 )) | |
1229 | rc = EINVAL; | |
1230 | break; | |
1231 | default: | |
1232 | if ((memcmp(HOST_APPL_NAME, host_name, 8)!=0) || | |
1233 | (memcmp(p_env->api_type , ws_name, 8)!=0)) | |
1234 | rc = EINVAL; | |
1235 | break; | |
1236 | } | |
1237 | ||
1da177e4 LT |
1238 | return 0; |
1239 | } /* end of find_link */ | |
1240 | ||
1241 | /*-------------------------------------------------------------------* | |
1242 | * claw_hw_tx * | |
1243 | * * | |
1244 | * * | |
1245 | *-------------------------------------------------------------------*/ | |
1246 | ||
1247 | static int | |
1248 | claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid) | |
1249 | { | |
1250 | int rc=0; | |
1251 | struct claw_privbk *privptr; | |
1252 | struct ccwbk *p_this_ccw; | |
1253 | struct ccwbk *p_first_ccw; | |
1254 | struct ccwbk *p_last_ccw; | |
1255 | __u32 numBuffers; | |
1256 | signed long len_of_data; | |
1257 | unsigned long bytesInThisBuffer; | |
1258 | unsigned char *pDataAddress; | |
1259 | struct endccw *pEnd; | |
1260 | struct ccw1 tempCCW; | |
1261 | struct chbk *p_ch; | |
1262 | struct claw_env *p_env; | |
1263 | int lock; | |
1264 | struct clawph *pk_head; | |
1265 | struct chbk *ch; | |
b805da74 AR |
1266 | |
1267 | CLAW_DBF_TEXT(4, trace, "hw_tx"); | |
6951df34 | 1268 | privptr = (struct claw_privbk *)(dev->ml_priv); |
1da177e4 LT |
1269 | p_ch=(struct chbk *)&privptr->channel[WRITE]; |
1270 | p_env =privptr->p_env; | |
1da177e4 LT |
1271 | claw_free_wrt_buf(dev); /* Clean up free chain if posible */ |
1272 | /* scan the write queue to free any completed write packets */ | |
1273 | p_first_ccw=NULL; | |
1274 | p_last_ccw=NULL; | |
1275 | if ((p_env->packing >= PACK_SEND) && | |
1276 | (skb->cb[1] != 'P')) { | |
1277 | skb_push(skb,sizeof(struct clawph)); | |
1278 | pk_head=(struct clawph *)skb->data; | |
1279 | pk_head->len=skb->len-sizeof(struct clawph); | |
1280 | if (pk_head->len%4) { | |
1281 | pk_head->len+= 4-(pk_head->len%4); | |
1282 | skb_pad(skb,4-(pk_head->len%4)); | |
1283 | skb_put(skb,4-(pk_head->len%4)); | |
1284 | } | |
1285 | if (p_env->packing == DO_PACKED) | |
1286 | pk_head->link_num = linkid; | |
1287 | else | |
1288 | pk_head->link_num = 0; | |
1289 | pk_head->flag = 0x00; | |
1290 | skb_pad(skb,4); | |
1291 | skb->cb[1] = 'P'; | |
1292 | } | |
1293 | if (linkid == 0) { | |
1294 | if (claw_check_busy(dev)) { | |
1295 | if (privptr->write_free_count!=0) { | |
1296 | claw_clear_busy(dev); | |
1297 | } | |
1298 | else { | |
1299 | claw_strt_out_IO(dev ); | |
1300 | claw_free_wrt_buf( dev ); | |
1301 | if (privptr->write_free_count==0) { | |
1da177e4 LT |
1302 | ch = &privptr->channel[WRITE]; |
1303 | atomic_inc(&skb->users); | |
1304 | skb_queue_tail(&ch->collect_queue, skb); | |
1305 | goto Done; | |
1306 | } | |
1307 | else { | |
1308 | claw_clear_busy(dev); | |
1309 | } | |
1310 | } | |
1311 | } | |
1312 | /* tx lock */ | |
1313 | if (claw_test_and_setbit_busy(TB_TX,dev)) { /* set to busy */ | |
1da177e4 LT |
1314 | ch = &privptr->channel[WRITE]; |
1315 | atomic_inc(&skb->users); | |
1316 | skb_queue_tail(&ch->collect_queue, skb); | |
1317 | claw_strt_out_IO(dev ); | |
1318 | rc=-EBUSY; | |
1319 | goto Done2; | |
1320 | } | |
1321 | } | |
1322 | /* See how many write buffers are required to hold this data */ | |
f5154fbf | 1323 | numBuffers = DIV_ROUND_UP(skb->len, privptr->p_env->write_size); |
1da177e4 LT |
1324 | |
1325 | /* If that number of buffers isn't available, give up for now */ | |
1326 | if (privptr->write_free_count < numBuffers || | |
1327 | privptr->p_write_free_chain == NULL ) { | |
1328 | ||
1329 | claw_setbit_busy(TB_NOBUFFER,dev); | |
1da177e4 LT |
1330 | ch = &privptr->channel[WRITE]; |
1331 | atomic_inc(&skb->users); | |
1332 | skb_queue_tail(&ch->collect_queue, skb); | |
b805da74 | 1333 | CLAW_DBF_TEXT(2, trace, "clawbusy"); |
1da177e4 LT |
1334 | goto Done2; |
1335 | } | |
1336 | pDataAddress=skb->data; | |
1337 | len_of_data=skb->len; | |
1338 | ||
1339 | while (len_of_data > 0) { | |
1da177e4 LT |
1340 | p_this_ccw=privptr->p_write_free_chain; /* get a block */ |
1341 | if (p_this_ccw == NULL) { /* lost the race */ | |
1342 | ch = &privptr->channel[WRITE]; | |
1343 | atomic_inc(&skb->users); | |
1344 | skb_queue_tail(&ch->collect_queue, skb); | |
1345 | goto Done2; | |
1346 | } | |
1347 | privptr->p_write_free_chain=p_this_ccw->next; | |
1348 | p_this_ccw->next=NULL; | |
1349 | --privptr->write_free_count; /* -1 */ | |
1350 | bytesInThisBuffer=len_of_data; | |
1351 | memcpy( p_this_ccw->p_buffer,pDataAddress, bytesInThisBuffer); | |
1352 | len_of_data-=bytesInThisBuffer; | |
1353 | pDataAddress+=(unsigned long)bytesInThisBuffer; | |
1354 | /* setup write CCW */ | |
1355 | p_this_ccw->write.cmd_code = (linkid * 8) +1; | |
1356 | if (len_of_data>0) { | |
1357 | p_this_ccw->write.cmd_code+=MORE_to_COME_FLAG; | |
1358 | } | |
1359 | p_this_ccw->write.count=bytesInThisBuffer; | |
1360 | /* now add to end of this chain */ | |
1361 | if (p_first_ccw==NULL) { | |
1362 | p_first_ccw=p_this_ccw; | |
1363 | } | |
1364 | if (p_last_ccw!=NULL) { | |
1365 | p_last_ccw->next=p_this_ccw; | |
1366 | /* set up TIC ccws */ | |
1367 | p_last_ccw->w_TIC_1.cda= | |
1368 | (__u32)__pa(&p_this_ccw->write); | |
1369 | } | |
1370 | p_last_ccw=p_this_ccw; /* save new last block */ | |
1da177e4 LT |
1371 | } |
1372 | ||
1373 | /* FirstCCW and LastCCW now contain a new set of write channel | |
1374 | * programs to append to the running channel program | |
1375 | */ | |
1376 | ||
1377 | if (p_first_ccw!=NULL) { | |
1378 | /* setup ending ccw sequence for this segment */ | |
1379 | pEnd=privptr->p_end_ccw; | |
1380 | if (pEnd->write1) { | |
1381 | pEnd->write1=0x00; /* second end ccw is now active */ | |
1382 | /* set up Tic CCWs */ | |
1383 | p_last_ccw->w_TIC_1.cda= | |
1384 | (__u32)__pa(&pEnd->write2_nop1); | |
1385 | pEnd->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1386 | pEnd->write2_nop2.flags = | |
1387 | CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1388 | pEnd->write2_nop2.cda=0; | |
1389 | pEnd->write2_nop2.count=1; | |
1390 | } | |
1391 | else { /* end of if (pEnd->write1)*/ | |
1392 | pEnd->write1=0x01; /* first end ccw is now active */ | |
1393 | /* set up Tic CCWs */ | |
1394 | p_last_ccw->w_TIC_1.cda= | |
1395 | (__u32)__pa(&pEnd->write1_nop1); | |
1396 | pEnd->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1397 | pEnd->write1_nop2.flags = | |
1398 | CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1399 | pEnd->write1_nop2.cda=0; | |
1400 | pEnd->write1_nop2.count=1; | |
1401 | } /* end if if (pEnd->write1) */ | |
1402 | ||
1da177e4 LT |
1403 | if (privptr->p_write_active_first==NULL ) { |
1404 | privptr->p_write_active_first=p_first_ccw; | |
1405 | privptr->p_write_active_last=p_last_ccw; | |
1406 | } | |
1407 | else { | |
1da177e4 LT |
1408 | /* set up Tic CCWs */ |
1409 | ||
1410 | tempCCW.cda=(__u32)__pa(&p_first_ccw->write); | |
1411 | tempCCW.count=0; | |
1412 | tempCCW.flags=0; | |
1413 | tempCCW.cmd_code=CCW_CLAW_CMD_TIC; | |
1414 | ||
1415 | if (pEnd->write1) { | |
1416 | ||
1417 | /* | |
1418 | * first set of ending CCW's is chained to the new write | |
1419 | * chain, so the second set is chained to the active chain | |
1420 | * Therefore modify the second set to point the new write chain. | |
1421 | * make sure we update the CCW atomically | |
1422 | * so channel does not fetch it when it's only half done | |
1423 | */ | |
1424 | memcpy( &pEnd->write2_nop2, &tempCCW , | |
1425 | sizeof(struct ccw1)); | |
1426 | privptr->p_write_active_last->w_TIC_1.cda= | |
1427 | (__u32)__pa(&p_first_ccw->write); | |
1428 | } | |
1429 | else { | |
1430 | ||
1431 | /*make sure we update the CCW atomically | |
1432 | *so channel does not fetch it when it's only half done | |
1433 | */ | |
1434 | memcpy(&pEnd->write1_nop2, &tempCCW , | |
1435 | sizeof(struct ccw1)); | |
1436 | privptr->p_write_active_last->w_TIC_1.cda= | |
1437 | (__u32)__pa(&p_first_ccw->write); | |
1438 | ||
1439 | } /* end if if (pEnd->write1) */ | |
1440 | ||
1441 | privptr->p_write_active_last->next=p_first_ccw; | |
1442 | privptr->p_write_active_last=p_last_ccw; | |
1443 | } | |
1444 | ||
1445 | } /* endif (p_first_ccw!=NULL) */ | |
8e84c801 | 1446 | dev_kfree_skb_any(skb); |
1da177e4 LT |
1447 | if (linkid==0) { |
1448 | lock=LOCK_NO; | |
1449 | } | |
1450 | else { | |
1451 | lock=LOCK_YES; | |
1452 | } | |
1453 | claw_strt_out_IO(dev ); | |
1454 | /* if write free count is zero , set NOBUFFER */ | |
1da177e4 LT |
1455 | if (privptr->write_free_count==0) { |
1456 | claw_setbit_busy(TB_NOBUFFER,dev); | |
1457 | } | |
1458 | Done2: | |
1459 | claw_clearbit_busy(TB_TX,dev); | |
1460 | Done: | |
1da177e4 LT |
1461 | return(rc); |
1462 | } /* end of claw_hw_tx */ | |
1463 | ||
1464 | /*-------------------------------------------------------------------* | |
1465 | * * | |
1466 | * init_ccw_bk * | |
1467 | * * | |
1468 | *--------------------------------------------------------------------*/ | |
1469 | ||
1470 | static int | |
1471 | init_ccw_bk(struct net_device *dev) | |
1472 | { | |
1473 | ||
1474 | __u32 ccw_blocks_required; | |
1475 | __u32 ccw_blocks_perpage; | |
1476 | __u32 ccw_pages_required; | |
1477 | __u32 claw_reads_perpage=1; | |
1478 | __u32 claw_read_pages; | |
1479 | __u32 claw_writes_perpage=1; | |
1480 | __u32 claw_write_pages; | |
1481 | void *p_buff=NULL; | |
1482 | struct ccwbk*p_free_chain; | |
1483 | struct ccwbk*p_buf; | |
1484 | struct ccwbk*p_last_CCWB; | |
1485 | struct ccwbk*p_first_CCWB; | |
1486 | struct endccw *p_endccw=NULL; | |
6951df34 PT |
1487 | addr_t real_address; |
1488 | struct claw_privbk *privptr = dev->ml_priv; | |
1da177e4 LT |
1489 | struct clawh *pClawH=NULL; |
1490 | addr_t real_TIC_address; | |
1491 | int i,j; | |
b805da74 | 1492 | CLAW_DBF_TEXT(4, trace, "init_ccw"); |
1da177e4 LT |
1493 | |
1494 | /* initialize statistics field */ | |
1495 | privptr->active_link_ID=0; | |
1496 | /* initialize ccwbk pointers */ | |
1497 | privptr->p_write_free_chain=NULL; /* pointer to free ccw chain*/ | |
1498 | privptr->p_write_active_first=NULL; /* pointer to the first write ccw*/ | |
1499 | privptr->p_write_active_last=NULL; /* pointer to the last write ccw*/ | |
1500 | privptr->p_read_active_first=NULL; /* pointer to the first read ccw*/ | |
1501 | privptr->p_read_active_last=NULL; /* pointer to the last read ccw */ | |
1502 | privptr->p_end_ccw=NULL; /* pointer to ending ccw */ | |
1503 | privptr->p_claw_signal_blk=NULL; /* pointer to signal block */ | |
1504 | privptr->buffs_alloc = 0; | |
1505 | memset(&privptr->end_ccw, 0x00, sizeof(struct endccw)); | |
1506 | memset(&privptr->ctl_bk, 0x00, sizeof(struct clawctl)); | |
1507 | /* initialize free write ccwbk counter */ | |
1508 | privptr->write_free_count=0; /* number of free bufs on write chain */ | |
1509 | p_last_CCWB = NULL; | |
1510 | p_first_CCWB= NULL; | |
1511 | /* | |
1512 | * We need 1 CCW block for each read buffer, 1 for each | |
1513 | * write buffer, plus 1 for ClawSignalBlock | |
1514 | */ | |
1515 | ccw_blocks_required = | |
1516 | privptr->p_env->read_buffers+privptr->p_env->write_buffers+1; | |
1da177e4 LT |
1517 | /* |
1518 | * compute number of CCW blocks that will fit in a page | |
1519 | */ | |
1520 | ccw_blocks_perpage= PAGE_SIZE / CCWBK_SIZE; | |
1521 | ccw_pages_required= | |
f5154fbf | 1522 | DIV_ROUND_UP(ccw_blocks_required, ccw_blocks_perpage); |
1da177e4 | 1523 | |
1da177e4 LT |
1524 | /* |
1525 | * read and write sizes are set by 2 constants in claw.h | |
1526 | * 4k and 32k. Unpacked values other than 4k are not going to | |
1527 | * provide good performance. With packing buffers support 32k | |
1528 | * buffers are used. | |
1529 | */ | |
f5154fbf JL |
1530 | if (privptr->p_env->read_size < PAGE_SIZE) { |
1531 | claw_reads_perpage = PAGE_SIZE / privptr->p_env->read_size; | |
1532 | claw_read_pages = DIV_ROUND_UP(privptr->p_env->read_buffers, | |
1533 | claw_reads_perpage); | |
1da177e4 LT |
1534 | } |
1535 | else { /* > or equal */ | |
f5154fbf JL |
1536 | privptr->p_buff_pages_perread = |
1537 | DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE); | |
1538 | claw_read_pages = privptr->p_env->read_buffers * | |
1539 | privptr->p_buff_pages_perread; | |
1da177e4 LT |
1540 | } |
1541 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
f5154fbf JL |
1542 | claw_writes_perpage = |
1543 | PAGE_SIZE / privptr->p_env->write_size; | |
1544 | claw_write_pages = DIV_ROUND_UP(privptr->p_env->write_buffers, | |
1545 | claw_writes_perpage); | |
1da177e4 LT |
1546 | |
1547 | } | |
1548 | else { /* > or equal */ | |
f5154fbf JL |
1549 | privptr->p_buff_pages_perwrite = |
1550 | DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE); | |
1551 | claw_write_pages = privptr->p_env->write_buffers * | |
1552 | privptr->p_buff_pages_perwrite; | |
1da177e4 | 1553 | } |
1da177e4 LT |
1554 | /* |
1555 | * allocate ccw_pages_required | |
1556 | */ | |
1557 | if (privptr->p_buff_ccw==NULL) { | |
1558 | privptr->p_buff_ccw= | |
1559 | (void *)__get_free_pages(__GFP_DMA, | |
1560 | (int)pages_to_order_of_mag(ccw_pages_required )); | |
1561 | if (privptr->p_buff_ccw==NULL) { | |
1da177e4 LT |
1562 | return -ENOMEM; |
1563 | } | |
1564 | privptr->p_buff_ccw_num=ccw_pages_required; | |
1565 | } | |
1566 | memset(privptr->p_buff_ccw, 0x00, | |
1567 | privptr->p_buff_ccw_num * PAGE_SIZE); | |
1568 | ||
1569 | /* | |
1570 | * obtain ending ccw block address | |
1571 | * | |
1572 | */ | |
1573 | privptr->p_end_ccw = (struct endccw *)&privptr->end_ccw; | |
1574 | real_address = (__u32)__pa(privptr->p_end_ccw); | |
1575 | /* Initialize ending CCW block */ | |
1da177e4 LT |
1576 | p_endccw=privptr->p_end_ccw; |
1577 | p_endccw->real=real_address; | |
1578 | p_endccw->write1=0x00; | |
1579 | p_endccw->read1=0x00; | |
1580 | ||
1581 | /* write1_nop1 */ | |
1582 | p_endccw->write1_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1583 | p_endccw->write1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1584 | p_endccw->write1_nop1.count = 1; | |
1585 | p_endccw->write1_nop1.cda = 0; | |
1586 | ||
1587 | /* write1_nop2 */ | |
1588 | p_endccw->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1589 | p_endccw->write1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1590 | p_endccw->write1_nop2.count = 1; | |
1591 | p_endccw->write1_nop2.cda = 0; | |
1592 | ||
1593 | /* write2_nop1 */ | |
1594 | p_endccw->write2_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1595 | p_endccw->write2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1596 | p_endccw->write2_nop1.count = 1; | |
1597 | p_endccw->write2_nop1.cda = 0; | |
1598 | ||
1599 | /* write2_nop2 */ | |
1600 | p_endccw->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1601 | p_endccw->write2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1602 | p_endccw->write2_nop2.count = 1; | |
1603 | p_endccw->write2_nop2.cda = 0; | |
1604 | ||
1605 | /* read1_nop1 */ | |
1606 | p_endccw->read1_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1607 | p_endccw->read1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1608 | p_endccw->read1_nop1.count = 1; | |
1609 | p_endccw->read1_nop1.cda = 0; | |
1610 | ||
1611 | /* read1_nop2 */ | |
1612 | p_endccw->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1613 | p_endccw->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1614 | p_endccw->read1_nop2.count = 1; | |
1615 | p_endccw->read1_nop2.cda = 0; | |
1616 | ||
1617 | /* read2_nop1 */ | |
1618 | p_endccw->read2_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1619 | p_endccw->read2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1620 | p_endccw->read2_nop1.count = 1; | |
1621 | p_endccw->read2_nop1.cda = 0; | |
1622 | ||
1623 | /* read2_nop2 */ | |
1624 | p_endccw->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1625 | p_endccw->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1626 | p_endccw->read2_nop2.count = 1; | |
1627 | p_endccw->read2_nop2.cda = 0; | |
1628 | ||
1da177e4 LT |
1629 | /* |
1630 | * Build a chain of CCWs | |
1631 | * | |
1632 | */ | |
1da177e4 LT |
1633 | p_buff=privptr->p_buff_ccw; |
1634 | ||
1635 | p_free_chain=NULL; | |
1636 | for (i=0 ; i < ccw_pages_required; i++ ) { | |
1637 | real_address = (__u32)__pa(p_buff); | |
1638 | p_buf=p_buff; | |
1639 | for (j=0 ; j < ccw_blocks_perpage ; j++) { | |
1640 | p_buf->next = p_free_chain; | |
1641 | p_free_chain = p_buf; | |
1642 | p_buf->real=(__u32)__pa(p_buf); | |
1643 | ++p_buf; | |
1644 | } | |
1645 | p_buff+=PAGE_SIZE; | |
1646 | } | |
1da177e4 LT |
1647 | /* |
1648 | * Initialize ClawSignalBlock | |
1649 | * | |
1650 | */ | |
1da177e4 LT |
1651 | if (privptr->p_claw_signal_blk==NULL) { |
1652 | privptr->p_claw_signal_blk=p_free_chain; | |
1653 | p_free_chain=p_free_chain->next; | |
1654 | pClawH=(struct clawh *)privptr->p_claw_signal_blk; | |
1655 | pClawH->length=0xffff; | |
1656 | pClawH->opcode=0xff; | |
1657 | pClawH->flag=CLAW_BUSY; | |
1658 | } | |
1da177e4 LT |
1659 | |
1660 | /* | |
1661 | * allocate write_pages_required and add to free chain | |
1662 | */ | |
1663 | if (privptr->p_buff_write==NULL) { | |
1664 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
1665 | privptr->p_buff_write= | |
1666 | (void *)__get_free_pages(__GFP_DMA, | |
1667 | (int)pages_to_order_of_mag(claw_write_pages )); | |
1668 | if (privptr->p_buff_write==NULL) { | |
1da177e4 | 1669 | privptr->p_buff_ccw=NULL; |
1da177e4 LT |
1670 | return -ENOMEM; |
1671 | } | |
1672 | /* | |
1673 | * Build CLAW write free chain | |
1674 | * | |
1675 | */ | |
1676 | ||
1677 | memset(privptr->p_buff_write, 0x00, | |
1678 | ccw_pages_required * PAGE_SIZE); | |
1da177e4 LT |
1679 | privptr->p_write_free_chain=NULL; |
1680 | ||
1681 | p_buff=privptr->p_buff_write; | |
1682 | ||
1683 | for (i=0 ; i< privptr->p_env->write_buffers ; i++) { | |
1684 | p_buf = p_free_chain; /* get a CCW */ | |
1685 | p_free_chain = p_buf->next; | |
1686 | p_buf->next =privptr->p_write_free_chain; | |
1687 | privptr->p_write_free_chain = p_buf; | |
1688 | p_buf-> p_buffer = (struct clawbuf *)p_buff; | |
1689 | p_buf-> write.cda = (__u32)__pa(p_buff); | |
1690 | p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1691 | p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1692 | p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1693 | p_buf-> w_read_FF.count = 1; | |
1694 | p_buf-> w_read_FF.cda = | |
1695 | (__u32)__pa(&p_buf-> header.flag); | |
1696 | p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1697 | p_buf-> w_TIC_1.flags = 0; | |
1698 | p_buf-> w_TIC_1.count = 0; | |
1699 | ||
1700 | if (((unsigned long)p_buff+privptr->p_env->write_size) >= | |
1701 | ((unsigned long)(p_buff+2* | |
1702 | (privptr->p_env->write_size) -1) & PAGE_MASK)) { | |
1703 | p_buff= p_buff+privptr->p_env->write_size; | |
1704 | } | |
1705 | } | |
1706 | } | |
1707 | else /* Buffers are => PAGE_SIZE. 1 buff per get_free_pages */ | |
1708 | { | |
1709 | privptr->p_write_free_chain=NULL; | |
1710 | for (i = 0; i< privptr->p_env->write_buffers ; i++) { | |
1711 | p_buff=(void *)__get_free_pages(__GFP_DMA, | |
1712 | (int)pages_to_order_of_mag( | |
1713 | privptr->p_buff_pages_perwrite) ); | |
1da177e4 | 1714 | if (p_buff==NULL) { |
1da177e4 LT |
1715 | free_pages((unsigned long)privptr->p_buff_ccw, |
1716 | (int)pages_to_order_of_mag( | |
1717 | privptr->p_buff_ccw_num)); | |
1718 | privptr->p_buff_ccw=NULL; | |
1719 | p_buf=privptr->p_buff_write; | |
1720 | while (p_buf!=NULL) { | |
1721 | free_pages((unsigned long) | |
1722 | p_buf->p_buffer, | |
1723 | (int)pages_to_order_of_mag( | |
1724 | privptr->p_buff_pages_perwrite)); | |
1725 | p_buf=p_buf->next; | |
1726 | } | |
1da177e4 LT |
1727 | return -ENOMEM; |
1728 | } /* Error on get_pages */ | |
1729 | memset(p_buff, 0x00, privptr->p_env->write_size ); | |
1730 | p_buf = p_free_chain; | |
1731 | p_free_chain = p_buf->next; | |
1732 | p_buf->next = privptr->p_write_free_chain; | |
1733 | privptr->p_write_free_chain = p_buf; | |
1734 | privptr->p_buff_write = p_buf; | |
1735 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1736 | p_buf-> write.cda = (__u32)__pa(p_buff); | |
1737 | p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1738 | p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1739 | p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1740 | p_buf-> w_read_FF.count = 1; | |
1741 | p_buf-> w_read_FF.cda = | |
1742 | (__u32)__pa(&p_buf-> header.flag); | |
1743 | p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1744 | p_buf-> w_TIC_1.flags = 0; | |
1745 | p_buf-> w_TIC_1.count = 0; | |
1746 | } /* for all write_buffers */ | |
1747 | ||
1748 | } /* else buffers are PAGE_SIZE or bigger */ | |
1749 | ||
1750 | } | |
1751 | privptr->p_buff_write_num=claw_write_pages; | |
1752 | privptr->write_free_count=privptr->p_env->write_buffers; | |
1753 | ||
1754 | ||
1da177e4 LT |
1755 | /* |
1756 | * allocate read_pages_required and chain to free chain | |
1757 | */ | |
1758 | if (privptr->p_buff_read==NULL) { | |
1759 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
1760 | privptr->p_buff_read= | |
1761 | (void *)__get_free_pages(__GFP_DMA, | |
1762 | (int)pages_to_order_of_mag(claw_read_pages) ); | |
1763 | if (privptr->p_buff_read==NULL) { | |
1da177e4 LT |
1764 | free_pages((unsigned long)privptr->p_buff_ccw, |
1765 | (int)pages_to_order_of_mag( | |
1766 | privptr->p_buff_ccw_num)); | |
1767 | /* free the write pages size is < page size */ | |
1768 | free_pages((unsigned long)privptr->p_buff_write, | |
1769 | (int)pages_to_order_of_mag( | |
1770 | privptr->p_buff_write_num)); | |
1771 | privptr->p_buff_ccw=NULL; | |
1772 | privptr->p_buff_write=NULL; | |
1da177e4 LT |
1773 | return -ENOMEM; |
1774 | } | |
1775 | memset(privptr->p_buff_read, 0x00, claw_read_pages * PAGE_SIZE); | |
1776 | privptr->p_buff_read_num=claw_read_pages; | |
1777 | /* | |
1778 | * Build CLAW read free chain | |
1779 | * | |
1780 | */ | |
1da177e4 LT |
1781 | p_buff=privptr->p_buff_read; |
1782 | for (i=0 ; i< privptr->p_env->read_buffers ; i++) { | |
1783 | p_buf = p_free_chain; | |
1784 | p_free_chain = p_buf->next; | |
1785 | ||
1786 | if (p_last_CCWB==NULL) { | |
1787 | p_buf->next=NULL; | |
1788 | real_TIC_address=0; | |
1789 | p_last_CCWB=p_buf; | |
1790 | } | |
1791 | else { | |
1792 | p_buf->next=p_first_CCWB; | |
1793 | real_TIC_address= | |
1794 | (__u32)__pa(&p_first_CCWB -> read ); | |
1795 | } | |
1796 | ||
1797 | p_first_CCWB=p_buf; | |
1798 | ||
1799 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1800 | /* initialize read command */ | |
1801 | p_buf-> read.cmd_code = CCW_CLAW_CMD_READ; | |
1802 | p_buf-> read.cda = (__u32)__pa(p_buff); | |
1803 | p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1804 | p_buf-> read.count = privptr->p_env->read_size; | |
1805 | ||
1806 | /* initialize read_h command */ | |
1807 | p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER; | |
1808 | p_buf-> read_h.cda = | |
1809 | (__u32)__pa(&(p_buf->header)); | |
1810 | p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1811 | p_buf-> read_h.count = sizeof(struct clawh); | |
1812 | ||
1813 | /* initialize Signal command */ | |
1814 | p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD; | |
1815 | p_buf-> signal.cda = | |
1816 | (__u32)__pa(&(pClawH->flag)); | |
1817 | p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1818 | p_buf-> signal.count = 1; | |
1819 | ||
1820 | /* initialize r_TIC_1 command */ | |
1821 | p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1822 | p_buf-> r_TIC_1.cda = (__u32)real_TIC_address; | |
1823 | p_buf-> r_TIC_1.flags = 0; | |
1824 | p_buf-> r_TIC_1.count = 0; | |
1825 | ||
1826 | /* initialize r_read_FF command */ | |
1827 | p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1828 | p_buf-> r_read_FF.cda = | |
1829 | (__u32)__pa(&(pClawH->flag)); | |
1830 | p_buf-> r_read_FF.flags = | |
1831 | CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI; | |
1832 | p_buf-> r_read_FF.count = 1; | |
1833 | ||
1834 | /* initialize r_TIC_2 */ | |
1835 | memcpy(&p_buf->r_TIC_2, | |
1836 | &p_buf->r_TIC_1, sizeof(struct ccw1)); | |
1837 | ||
1838 | /* initialize Header */ | |
1839 | p_buf->header.length=0xffff; | |
1840 | p_buf->header.opcode=0xff; | |
1841 | p_buf->header.flag=CLAW_PENDING; | |
1842 | ||
1843 | if (((unsigned long)p_buff+privptr->p_env->read_size) >= | |
1844 | ((unsigned long)(p_buff+2*(privptr->p_env->read_size) -1) | |
1845 | & PAGE_MASK) ) { | |
1846 | p_buff= p_buff+privptr->p_env->read_size; | |
1847 | } | |
1848 | else { | |
1849 | p_buff= | |
1850 | (void *)((unsigned long) | |
1851 | (p_buff+2*(privptr->p_env->read_size) -1) | |
1852 | & PAGE_MASK) ; | |
1853 | } | |
1854 | } /* for read_buffers */ | |
1855 | } /* read_size < PAGE_SIZE */ | |
1856 | else { /* read Size >= PAGE_SIZE */ | |
1da177e4 LT |
1857 | for (i=0 ; i< privptr->p_env->read_buffers ; i++) { |
1858 | p_buff = (void *)__get_free_pages(__GFP_DMA, | |
1859 | (int)pages_to_order_of_mag(privptr->p_buff_pages_perread) ); | |
1860 | if (p_buff==NULL) { | |
1da177e4 LT |
1861 | free_pages((unsigned long)privptr->p_buff_ccw, |
1862 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
1863 | /* free the write pages */ | |
1864 | p_buf=privptr->p_buff_write; | |
1865 | while (p_buf!=NULL) { | |
1866 | free_pages((unsigned long)p_buf->p_buffer, | |
1867 | (int)pages_to_order_of_mag( | |
1868 | privptr->p_buff_pages_perwrite )); | |
1869 | p_buf=p_buf->next; | |
1870 | } | |
1871 | /* free any read pages already alloc */ | |
1872 | p_buf=privptr->p_buff_read; | |
1873 | while (p_buf!=NULL) { | |
1874 | free_pages((unsigned long)p_buf->p_buffer, | |
1875 | (int)pages_to_order_of_mag( | |
1876 | privptr->p_buff_pages_perread )); | |
1877 | p_buf=p_buf->next; | |
1878 | } | |
1879 | privptr->p_buff_ccw=NULL; | |
1880 | privptr->p_buff_write=NULL; | |
1da177e4 LT |
1881 | return -ENOMEM; |
1882 | } | |
1883 | memset(p_buff, 0x00, privptr->p_env->read_size); | |
1884 | p_buf = p_free_chain; | |
1885 | privptr->p_buff_read = p_buf; | |
1886 | p_free_chain = p_buf->next; | |
1887 | ||
1888 | if (p_last_CCWB==NULL) { | |
1889 | p_buf->next=NULL; | |
1890 | real_TIC_address=0; | |
1891 | p_last_CCWB=p_buf; | |
1892 | } | |
1893 | else { | |
1894 | p_buf->next=p_first_CCWB; | |
1895 | real_TIC_address= | |
1896 | (addr_t)__pa( | |
1897 | &p_first_CCWB -> read ); | |
1898 | } | |
1899 | ||
1900 | p_first_CCWB=p_buf; | |
1901 | /* save buff address */ | |
1902 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1903 | /* initialize read command */ | |
1904 | p_buf-> read.cmd_code = CCW_CLAW_CMD_READ; | |
1905 | p_buf-> read.cda = (__u32)__pa(p_buff); | |
1906 | p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1907 | p_buf-> read.count = privptr->p_env->read_size; | |
1908 | ||
1909 | /* initialize read_h command */ | |
1910 | p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER; | |
1911 | p_buf-> read_h.cda = | |
1912 | (__u32)__pa(&(p_buf->header)); | |
1913 | p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1914 | p_buf-> read_h.count = sizeof(struct clawh); | |
1915 | ||
1916 | /* initialize Signal command */ | |
1917 | p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD; | |
1918 | p_buf-> signal.cda = | |
1919 | (__u32)__pa(&(pClawH->flag)); | |
1920 | p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1921 | p_buf-> signal.count = 1; | |
1922 | ||
1923 | /* initialize r_TIC_1 command */ | |
1924 | p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1925 | p_buf-> r_TIC_1.cda = (__u32)real_TIC_address; | |
1926 | p_buf-> r_TIC_1.flags = 0; | |
1927 | p_buf-> r_TIC_1.count = 0; | |
1928 | ||
1929 | /* initialize r_read_FF command */ | |
1930 | p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1931 | p_buf-> r_read_FF.cda = | |
1932 | (__u32)__pa(&(pClawH->flag)); | |
1933 | p_buf-> r_read_FF.flags = | |
1934 | CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI; | |
1935 | p_buf-> r_read_FF.count = 1; | |
1936 | ||
1937 | /* initialize r_TIC_2 */ | |
1938 | memcpy(&p_buf->r_TIC_2, &p_buf->r_TIC_1, | |
1939 | sizeof(struct ccw1)); | |
1940 | ||
1941 | /* initialize Header */ | |
1942 | p_buf->header.length=0xffff; | |
1943 | p_buf->header.opcode=0xff; | |
1944 | p_buf->header.flag=CLAW_PENDING; | |
1945 | ||
1946 | } /* For read_buffers */ | |
1947 | } /* read_size >= PAGE_SIZE */ | |
1948 | } /* pBuffread = NULL */ | |
1da177e4 LT |
1949 | add_claw_reads( dev ,p_first_CCWB , p_last_CCWB); |
1950 | privptr->buffs_alloc = 1; | |
b805da74 | 1951 | |
1da177e4 LT |
1952 | return 0; |
1953 | } /* end of init_ccw_bk */ | |
1954 | ||
1955 | /*-------------------------------------------------------------------* | |
1956 | * * | |
1957 | * probe_error * | |
1958 | * * | |
1959 | *--------------------------------------------------------------------*/ | |
1960 | ||
1961 | static void | |
1962 | probe_error( struct ccwgroup_device *cgdev) | |
1963 | { | |
2b356b46 | 1964 | struct claw_privbk *privptr; |
b805da74 AR |
1965 | |
1966 | CLAW_DBF_TEXT(4, trace, "proberr"); | |
2b356b46 MS |
1967 | privptr = (struct claw_privbk *) cgdev->dev.driver_data; |
1968 | if (privptr != NULL) { | |
1969 | cgdev->dev.driver_data = NULL; | |
17fd682e | 1970 | kfree(privptr->p_env); |
2b356b46 MS |
1971 | kfree(privptr->p_mtc_envelope); |
1972 | kfree(privptr); | |
1973 | } | |
1da177e4 LT |
1974 | } /* probe_error */ |
1975 | ||
1da177e4 LT |
1976 | /*-------------------------------------------------------------------* |
1977 | * claw_process_control * | |
1978 | * * | |
1979 | * * | |
1980 | *--------------------------------------------------------------------*/ | |
1981 | ||
1982 | static int | |
1983 | claw_process_control( struct net_device *dev, struct ccwbk * p_ccw) | |
1984 | { | |
1985 | ||
1986 | struct clawbuf *p_buf; | |
1987 | struct clawctl ctlbk; | |
1988 | struct clawctl *p_ctlbk; | |
1989 | char temp_host_name[8]; | |
1990 | char temp_ws_name[8]; | |
1991 | struct claw_privbk *privptr; | |
1992 | struct claw_env *p_env; | |
1993 | struct sysval *p_sysval; | |
1994 | struct conncmd *p_connect=NULL; | |
1995 | int rc; | |
1996 | struct chbk *p_ch = NULL; | |
b805da74 AR |
1997 | struct device *tdev; |
1998 | CLAW_DBF_TEXT(2, setup, "clw_cntl"); | |
1da177e4 LT |
1999 | udelay(1000); /* Wait a ms for the control packets to |
2000 | *catch up to each other */ | |
6951df34 | 2001 | privptr = dev->ml_priv; |
1da177e4 | 2002 | p_env=privptr->p_env; |
b805da74 | 2003 | tdev = &privptr->channel[READ].cdev->dev; |
1da177e4 LT |
2004 | memcpy( &temp_host_name, p_env->host_name, 8); |
2005 | memcpy( &temp_ws_name, p_env->adapter_name , 8); | |
2006 | printk(KERN_INFO "%s: CLAW device %.8s: " | |
2007 | "Received Control Packet\n", | |
2008 | dev->name, temp_ws_name); | |
2009 | if (privptr->release_pend==1) { | |
1da177e4 LT |
2010 | return 0; |
2011 | } | |
2012 | p_buf=p_ccw->p_buffer; | |
2013 | p_ctlbk=&ctlbk; | |
2014 | if (p_env->packing == DO_PACKED) { /* packing in progress?*/ | |
2015 | memcpy(p_ctlbk, &p_buf->buffer[4], sizeof(struct clawctl)); | |
2016 | } else { | |
2017 | memcpy(p_ctlbk, p_buf, sizeof(struct clawctl)); | |
2018 | } | |
1da177e4 LT |
2019 | switch (p_ctlbk->command) |
2020 | { | |
b805da74 AR |
2021 | case SYSTEM_VALIDATE_REQUEST: |
2022 | if (p_ctlbk->version != CLAW_VERSION_ID) { | |
2023 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2024 | CLAW_RC_WRONG_VERSION); | |
2025 | printk("%s: %d is wrong version id. " | |
2026 | "Expected %d\n", | |
2027 | dev->name, p_ctlbk->version, | |
2028 | CLAW_VERSION_ID); | |
2029 | } | |
2030 | p_sysval = (struct sysval *)&(p_ctlbk->data); | |
2031 | printk("%s: Recv Sys Validate Request: " | |
2032 | "Vers=%d,link_id=%d,Corr=%d,WS name=%." | |
2033 | "8s,Host name=%.8s\n", | |
2034 | dev->name, p_ctlbk->version, | |
2035 | p_ctlbk->linkid, | |
2036 | p_ctlbk->correlator, | |
2037 | p_sysval->WS_name, | |
2038 | p_sysval->host_name); | |
2039 | if (memcmp(temp_host_name, p_sysval->host_name, 8)) { | |
2040 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2041 | CLAW_RC_NAME_MISMATCH); | |
2042 | CLAW_DBF_TEXT(2, setup, "HSTBAD"); | |
2043 | CLAW_DBF_TEXT_(2, setup, "%s", p_sysval->host_name); | |
2044 | CLAW_DBF_TEXT_(2, setup, "%s", temp_host_name); | |
2045 | printk(KERN_INFO "%s: Host name mismatch\n", | |
2046 | dev->name); | |
2047 | printk(KERN_INFO "%s: Received :%s: " | |
2048 | "expected :%s: \n", | |
2049 | dev->name, | |
2050 | p_sysval->host_name, | |
2051 | temp_host_name); | |
2052 | } | |
2053 | if (memcmp(temp_ws_name, p_sysval->WS_name, 8)) { | |
2054 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2055 | CLAW_RC_NAME_MISMATCH); | |
2056 | CLAW_DBF_TEXT(2, setup, "WSNBAD"); | |
2057 | CLAW_DBF_TEXT_(2, setup, "%s", p_sysval->WS_name); | |
2058 | CLAW_DBF_TEXT_(2, setup, "%s", temp_ws_name); | |
2059 | printk(KERN_INFO "%s: WS name mismatch\n", | |
2060 | dev->name); | |
2061 | printk(KERN_INFO "%s: Received :%s: " | |
2062 | "expected :%s: \n", | |
2063 | dev->name, | |
2064 | p_sysval->WS_name, | |
2065 | temp_ws_name); | |
2066 | } | |
2067 | if ((p_sysval->write_frame_size < p_env->write_size) && | |
2068 | (p_env->packing == 0)) { | |
2069 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2070 | CLAW_RC_HOST_RCV_TOO_SMALL); | |
2071 | printk(KERN_INFO "%s: host write size is too " | |
2072 | "small\n", dev->name); | |
2073 | CLAW_DBF_TEXT(2, setup, "wrtszbad"); | |
2074 | } | |
2075 | if ((p_sysval->read_frame_size < p_env->read_size) && | |
2076 | (p_env->packing == 0)) { | |
2077 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2078 | CLAW_RC_HOST_RCV_TOO_SMALL); | |
2079 | printk(KERN_INFO "%s: host read size is too " | |
2080 | "small\n", dev->name); | |
2081 | CLAW_DBF_TEXT(2, setup, "rdsizbad"); | |
2082 | } | |
2083 | claw_snd_sys_validate_rsp(dev, p_ctlbk, 0); | |
2084 | printk(KERN_INFO "%s: CLAW device %.8s: System validate " | |
2085 | "completed.\n", dev->name, temp_ws_name); | |
2086 | printk("%s: sys Validate Rsize:%d Wsize:%d\n", dev->name, | |
2087 | p_sysval->read_frame_size, p_sysval->write_frame_size); | |
2088 | privptr->system_validate_comp = 1; | |
2089 | if (strncmp(p_env->api_type, WS_APPL_NAME_PACKED, 6) == 0) | |
2090 | p_env->packing = PACKING_ASK; | |
2091 | claw_strt_conn_req(dev); | |
2092 | break; | |
2093 | case SYSTEM_VALIDATE_RESPONSE: | |
2094 | p_sysval = (struct sysval *)&(p_ctlbk->data); | |
2095 | printk("%s: Recv Sys Validate Resp: Vers=%d,Corr=%d,RC=%d," | |
2096 | "WS name=%.8s,Host name=%.8s\n", | |
2097 | dev->name, | |
2098 | p_ctlbk->version, | |
2099 | p_ctlbk->correlator, | |
2100 | p_ctlbk->rc, | |
2101 | p_sysval->WS_name, | |
2102 | p_sysval->host_name); | |
2103 | switch (p_ctlbk->rc) { | |
2104 | case 0: | |
2105 | printk(KERN_INFO "%s: CLAW device " | |
2106 | "%.8s: System validate " | |
2107 | "completed.\n", | |
2108 | dev->name, temp_ws_name); | |
2109 | if (privptr->system_validate_comp == 0) | |
2110 | claw_strt_conn_req(dev); | |
2111 | privptr->system_validate_comp = 1; | |
2112 | break; | |
2113 | case CLAW_RC_NAME_MISMATCH: | |
2114 | printk(KERN_INFO "%s: Sys Validate " | |
2115 | "Resp : Host, WS name is " | |
2116 | "mismatch\n", | |
2117 | dev->name); | |
2118 | break; | |
2119 | case CLAW_RC_WRONG_VERSION: | |
2120 | printk(KERN_INFO "%s: Sys Validate " | |
2121 | "Resp : Wrong version\n", | |
2122 | dev->name); | |
2123 | break; | |
2124 | case CLAW_RC_HOST_RCV_TOO_SMALL: | |
2125 | printk(KERN_INFO "%s: Sys Validate " | |
2126 | "Resp : bad frame size\n", | |
2127 | dev->name); | |
2128 | break; | |
2129 | default: | |
2130 | printk(KERN_INFO "%s: Sys Validate " | |
2131 | "error code=%d \n", | |
2132 | dev->name, p_ctlbk->rc); | |
2133 | break; | |
2134 | } | |
2135 | break; | |
1da177e4 | 2136 | |
b805da74 AR |
2137 | case CONNECTION_REQUEST: |
2138 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
2139 | printk(KERN_INFO "%s: Recv Conn Req: Vers=%d,link_id=%d," | |
2140 | "Corr=%d,HOST appl=%.8s,WS appl=%.8s\n", | |
2141 | dev->name, | |
2142 | p_ctlbk->version, | |
2143 | p_ctlbk->linkid, | |
2144 | p_ctlbk->correlator, | |
2145 | p_connect->host_name, | |
2146 | p_connect->WS_name); | |
2147 | if (privptr->active_link_ID != 0) { | |
2148 | claw_snd_disc(dev, p_ctlbk); | |
2149 | printk(KERN_INFO "%s: Conn Req error : " | |
2150 | "already logical link is active \n", | |
2151 | dev->name); | |
2152 | } | |
2153 | if (p_ctlbk->linkid != 1) { | |
2154 | claw_snd_disc(dev, p_ctlbk); | |
2155 | printk(KERN_INFO "%s: Conn Req error : " | |
2156 | "req logical link id is not 1\n", | |
2157 | dev->name); | |
2158 | } | |
2159 | rc = find_link(dev, p_connect->host_name, p_connect->WS_name); | |
2160 | if (rc != 0) { | |
2161 | claw_snd_disc(dev, p_ctlbk); | |
2162 | printk(KERN_INFO "%s: Conn Resp error: " | |
2163 | "req appl name does not match\n", | |
2164 | dev->name); | |
2165 | } | |
2166 | claw_send_control(dev, | |
2167 | CONNECTION_CONFIRM, p_ctlbk->linkid, | |
2168 | p_ctlbk->correlator, | |
2169 | 0, p_connect->host_name, | |
2170 | p_connect->WS_name); | |
2171 | if (p_env->packing == PACKING_ASK) { | |
2172 | p_env->packing = PACK_SEND; | |
2173 | claw_snd_conn_req(dev, 0); | |
2174 | } | |
2175 | printk(KERN_INFO "%s: CLAW device %.8s: Connection " | |
2176 | "completed link_id=%d.\n", | |
2177 | dev->name, temp_ws_name, | |
2178 | p_ctlbk->linkid); | |
2179 | privptr->active_link_ID = p_ctlbk->linkid; | |
2180 | p_ch = &privptr->channel[WRITE]; | |
2181 | wake_up(&p_ch->wait); /* wake up claw_open ( WRITE) */ | |
2182 | break; | |
2183 | case CONNECTION_RESPONSE: | |
2184 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
2185 | printk(KERN_INFO "%s: Revc Conn Resp: Vers=%d,link_id=%d," | |
2186 | "Corr=%d,RC=%d,Host appl=%.8s, WS appl=%.8s\n", | |
2187 | dev->name, | |
2188 | p_ctlbk->version, | |
2189 | p_ctlbk->linkid, | |
2190 | p_ctlbk->correlator, | |
2191 | p_ctlbk->rc, | |
2192 | p_connect->host_name, | |
2193 | p_connect->WS_name); | |
2194 | ||
2195 | if (p_ctlbk->rc != 0) { | |
2196 | printk(KERN_INFO "%s: Conn Resp error: rc=%d \n", | |
2197 | dev->name, p_ctlbk->rc); | |
2198 | return 1; | |
2199 | } | |
2200 | rc = find_link(dev, | |
2201 | p_connect->host_name, p_connect->WS_name); | |
2202 | if (rc != 0) { | |
2203 | claw_snd_disc(dev, p_ctlbk); | |
2204 | printk(KERN_INFO "%s: Conn Resp error: " | |
2205 | "req appl name does not match\n", | |
2206 | dev->name); | |
2207 | } | |
2208 | /* should be until CONNECTION_CONFIRM */ | |
2209 | privptr->active_link_ID = -(p_ctlbk->linkid); | |
2210 | break; | |
2211 | case CONNECTION_CONFIRM: | |
2212 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
2213 | printk(KERN_INFO "%s: Recv Conn Confirm:Vers=%d,link_id=%d," | |
2214 | "Corr=%d,Host appl=%.8s,WS appl=%.8s\n", | |
2215 | dev->name, | |
2216 | p_ctlbk->version, | |
2217 | p_ctlbk->linkid, | |
2218 | p_ctlbk->correlator, | |
2219 | p_connect->host_name, | |
2220 | p_connect->WS_name); | |
2221 | if (p_ctlbk->linkid == -(privptr->active_link_ID)) { | |
2222 | privptr->active_link_ID = p_ctlbk->linkid; | |
2223 | if (p_env->packing > PACKING_ASK) { | |
2224 | printk(KERN_INFO "%s: Confirmed Now packing\n", | |
1da177e4 | 2225 | dev->name); |
1da177e4 LT |
2226 | p_env->packing = DO_PACKED; |
2227 | } | |
b805da74 AR |
2228 | p_ch = &privptr->channel[WRITE]; |
2229 | wake_up(&p_ch->wait); | |
2230 | } else { | |
2231 | printk(KERN_INFO "%s: Conn confirm: " | |
2232 | "unexpected linkid=%d \n", | |
2233 | dev->name, p_ctlbk->linkid); | |
2234 | claw_snd_disc(dev, p_ctlbk); | |
2235 | } | |
2236 | break; | |
2237 | case DISCONNECT: | |
2238 | printk(KERN_INFO "%s: Disconnect: " | |
2239 | "Vers=%d,link_id=%d,Corr=%d\n", | |
2240 | dev->name, p_ctlbk->version, | |
2241 | p_ctlbk->linkid, p_ctlbk->correlator); | |
2242 | if ((p_ctlbk->linkid == 2) && | |
2243 | (p_env->packing == PACK_SEND)) { | |
2244 | privptr->active_link_ID = 1; | |
2245 | p_env->packing = DO_PACKED; | |
2246 | } else | |
2247 | privptr->active_link_ID = 0; | |
2248 | break; | |
2249 | case CLAW_ERROR: | |
2250 | printk(KERN_INFO "%s: CLAW ERROR detected\n", | |
2251 | dev->name); | |
2252 | break; | |
2253 | default: | |
2254 | printk(KERN_INFO "%s: Unexpected command code=%d \n", | |
2255 | dev->name, p_ctlbk->command); | |
2256 | break; | |
1da177e4 LT |
2257 | } |
2258 | ||
1da177e4 LT |
2259 | return 0; |
2260 | } /* end of claw_process_control */ | |
2261 | ||
2262 | ||
2263 | /*-------------------------------------------------------------------* | |
2264 | * claw_send_control * | |
2265 | * * | |
2266 | *--------------------------------------------------------------------*/ | |
2267 | ||
2268 | static int | |
2269 | claw_send_control(struct net_device *dev, __u8 type, __u8 link, | |
2270 | __u8 correlator, __u8 rc, char *local_name, char *remote_name) | |
2271 | { | |
2272 | struct claw_privbk *privptr; | |
2273 | struct clawctl *p_ctl; | |
2274 | struct sysval *p_sysval; | |
2275 | struct conncmd *p_connect; | |
2276 | struct sk_buff *skb; | |
2277 | ||
b805da74 | 2278 | CLAW_DBF_TEXT(2, setup, "sndcntl"); |
6951df34 | 2279 | privptr = dev->ml_priv; |
1da177e4 LT |
2280 | p_ctl=(struct clawctl *)&privptr->ctl_bk; |
2281 | ||
2282 | p_ctl->command=type; | |
2283 | p_ctl->version=CLAW_VERSION_ID; | |
2284 | p_ctl->linkid=link; | |
2285 | p_ctl->correlator=correlator; | |
2286 | p_ctl->rc=rc; | |
2287 | ||
2288 | p_sysval=(struct sysval *)&p_ctl->data; | |
2289 | p_connect=(struct conncmd *)&p_ctl->data; | |
2290 | ||
2291 | switch (p_ctl->command) { | |
2292 | case SYSTEM_VALIDATE_REQUEST: | |
2293 | case SYSTEM_VALIDATE_RESPONSE: | |
2294 | memcpy(&p_sysval->host_name, local_name, 8); | |
2295 | memcpy(&p_sysval->WS_name, remote_name, 8); | |
2296 | if (privptr->p_env->packing > 0) { | |
2297 | p_sysval->read_frame_size=DEF_PACK_BUFSIZE; | |
2298 | p_sysval->write_frame_size=DEF_PACK_BUFSIZE; | |
2299 | } else { | |
b805da74 | 2300 | /* how big is the biggest group of packets */ |
1da177e4 LT |
2301 | p_sysval->read_frame_size=privptr->p_env->read_size; |
2302 | p_sysval->write_frame_size=privptr->p_env->write_size; | |
2303 | } | |
2304 | memset(&p_sysval->reserved, 0x00, 4); | |
2305 | break; | |
2306 | case CONNECTION_REQUEST: | |
2307 | case CONNECTION_RESPONSE: | |
2308 | case CONNECTION_CONFIRM: | |
2309 | case DISCONNECT: | |
2310 | memcpy(&p_sysval->host_name, local_name, 8); | |
2311 | memcpy(&p_sysval->WS_name, remote_name, 8); | |
2312 | if (privptr->p_env->packing > 0) { | |
2313 | /* How big is the biggest packet */ | |
2314 | p_connect->reserved1[0]=CLAW_FRAME_SIZE; | |
2315 | p_connect->reserved1[1]=CLAW_FRAME_SIZE; | |
2316 | } else { | |
2317 | memset(&p_connect->reserved1, 0x00, 4); | |
2318 | memset(&p_connect->reserved2, 0x00, 4); | |
2319 | } | |
2320 | break; | |
2321 | default: | |
2322 | break; | |
2323 | } | |
2324 | ||
2325 | /* write Control Record to the device */ | |
2326 | ||
2327 | ||
2328 | skb = dev_alloc_skb(sizeof(struct clawctl)); | |
2329 | if (!skb) { | |
1da177e4 LT |
2330 | return -ENOMEM; |
2331 | } | |
2332 | memcpy(skb_put(skb, sizeof(struct clawctl)), | |
2333 | p_ctl, sizeof(struct clawctl)); | |
1da177e4 LT |
2334 | if (privptr->p_env->packing >= PACK_SEND) |
2335 | claw_hw_tx(skb, dev, 1); | |
2336 | else | |
2337 | claw_hw_tx(skb, dev, 0); | |
1da177e4 LT |
2338 | return 0; |
2339 | } /* end of claw_send_control */ | |
2340 | ||
2341 | /*-------------------------------------------------------------------* | |
2342 | * claw_snd_conn_req * | |
2343 | * * | |
2344 | *--------------------------------------------------------------------*/ | |
2345 | static int | |
2346 | claw_snd_conn_req(struct net_device *dev, __u8 link) | |
2347 | { | |
2348 | int rc; | |
6951df34 | 2349 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 LT |
2350 | struct clawctl *p_ctl; |
2351 | ||
b805da74 | 2352 | CLAW_DBF_TEXT(2, setup, "snd_conn"); |
1da177e4 LT |
2353 | rc = 1; |
2354 | p_ctl=(struct clawctl *)&privptr->ctl_bk; | |
2355 | p_ctl->linkid = link; | |
2356 | if ( privptr->system_validate_comp==0x00 ) { | |
1da177e4 LT |
2357 | return rc; |
2358 | } | |
2359 | if (privptr->p_env->packing == PACKING_ASK ) | |
2360 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2361 | WS_APPL_NAME_PACKED, WS_APPL_NAME_PACKED); | |
2362 | if (privptr->p_env->packing == PACK_SEND) { | |
2363 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2364 | WS_APPL_NAME_IP_NAME, WS_APPL_NAME_IP_NAME); | |
2365 | } | |
2366 | if (privptr->p_env->packing == 0) | |
2367 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2368 | HOST_APPL_NAME, privptr->p_env->api_type); | |
1da177e4 LT |
2369 | return rc; |
2370 | ||
2371 | } /* end of claw_snd_conn_req */ | |
2372 | ||
2373 | ||
2374 | /*-------------------------------------------------------------------* | |
2375 | * claw_snd_disc * | |
2376 | * * | |
2377 | *--------------------------------------------------------------------*/ | |
2378 | ||
2379 | static int | |
2380 | claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl) | |
2381 | { | |
2382 | int rc; | |
2383 | struct conncmd * p_connect; | |
2384 | ||
b805da74 | 2385 | CLAW_DBF_TEXT(2, setup, "snd_dsc"); |
1da177e4 LT |
2386 | p_connect=(struct conncmd *)&p_ctl->data; |
2387 | ||
2388 | rc=claw_send_control(dev, DISCONNECT, p_ctl->linkid, | |
2389 | p_ctl->correlator, 0, | |
2390 | p_connect->host_name, p_connect->WS_name); | |
1da177e4 LT |
2391 | return rc; |
2392 | } /* end of claw_snd_disc */ | |
2393 | ||
2394 | ||
2395 | /*-------------------------------------------------------------------* | |
2396 | * claw_snd_sys_validate_rsp * | |
2397 | * * | |
2398 | *--------------------------------------------------------------------*/ | |
2399 | ||
2400 | static int | |
2401 | claw_snd_sys_validate_rsp(struct net_device *dev, | |
2402 | struct clawctl *p_ctl, __u32 return_code) | |
2403 | { | |
2404 | struct claw_env * p_env; | |
2405 | struct claw_privbk *privptr; | |
2406 | int rc; | |
2407 | ||
b805da74 | 2408 | CLAW_DBF_TEXT(2, setup, "chkresp"); |
6951df34 | 2409 | privptr = dev->ml_priv; |
1da177e4 LT |
2410 | p_env=privptr->p_env; |
2411 | rc=claw_send_control(dev, SYSTEM_VALIDATE_RESPONSE, | |
2412 | p_ctl->linkid, | |
2413 | p_ctl->correlator, | |
2414 | return_code, | |
2415 | p_env->host_name, | |
2416 | p_env->adapter_name ); | |
1da177e4 LT |
2417 | return rc; |
2418 | } /* end of claw_snd_sys_validate_rsp */ | |
2419 | ||
2420 | /*-------------------------------------------------------------------* | |
2421 | * claw_strt_conn_req * | |
2422 | * * | |
2423 | *--------------------------------------------------------------------*/ | |
2424 | ||
2425 | static int | |
2426 | claw_strt_conn_req(struct net_device *dev ) | |
2427 | { | |
2428 | int rc; | |
2429 | ||
b805da74 | 2430 | CLAW_DBF_TEXT(2, setup, "conn_req"); |
1da177e4 | 2431 | rc=claw_snd_conn_req(dev, 1); |
1da177e4 LT |
2432 | return rc; |
2433 | } /* end of claw_strt_conn_req */ | |
2434 | ||
2435 | ||
2436 | ||
2437 | /*-------------------------------------------------------------------* | |
2438 | * claw_stats * | |
2439 | *-------------------------------------------------------------------*/ | |
2440 | ||
2441 | static struct | |
2442 | net_device_stats *claw_stats(struct net_device *dev) | |
2443 | { | |
2444 | struct claw_privbk *privptr; | |
b805da74 AR |
2445 | |
2446 | CLAW_DBF_TEXT(4, trace, "stats"); | |
6951df34 | 2447 | privptr = dev->ml_priv; |
1da177e4 LT |
2448 | return &privptr->stats; |
2449 | } /* end of claw_stats */ | |
2450 | ||
2451 | ||
2452 | /*-------------------------------------------------------------------* | |
2453 | * unpack_read * | |
2454 | * * | |
2455 | *--------------------------------------------------------------------*/ | |
2456 | static void | |
2457 | unpack_read(struct net_device *dev ) | |
2458 | { | |
2459 | struct sk_buff *skb; | |
2460 | struct claw_privbk *privptr; | |
2461 | struct claw_env *p_env; | |
2462 | struct ccwbk *p_this_ccw; | |
2463 | struct ccwbk *p_first_ccw; | |
2464 | struct ccwbk *p_last_ccw; | |
2465 | struct clawph *p_packh; | |
2466 | void *p_packd; | |
2467 | struct clawctl *p_ctlrec=NULL; | |
b805da74 | 2468 | struct device *p_dev; |
1da177e4 LT |
2469 | |
2470 | __u32 len_of_data; | |
2471 | __u32 pack_off; | |
2472 | __u8 link_num; | |
2473 | __u8 mtc_this_frm=0; | |
2474 | __u32 bytes_to_mov; | |
1da177e4 LT |
2475 | int i=0; |
2476 | int p=0; | |
2477 | ||
b805da74 | 2478 | CLAW_DBF_TEXT(4, trace, "unpkread"); |
1da177e4 LT |
2479 | p_first_ccw=NULL; |
2480 | p_last_ccw=NULL; | |
2481 | p_packh=NULL; | |
2482 | p_packd=NULL; | |
6951df34 | 2483 | privptr = dev->ml_priv; |
b805da74 AR |
2484 | |
2485 | p_dev = &privptr->channel[READ].cdev->dev; | |
1da177e4 LT |
2486 | p_env = privptr->p_env; |
2487 | p_this_ccw=privptr->p_read_active_first; | |
2488 | i=0; | |
2489 | while (p_this_ccw!=NULL && p_this_ccw->header.flag!=CLAW_PENDING) { | |
1da177e4 LT |
2490 | pack_off = 0; |
2491 | p = 0; | |
2492 | p_this_ccw->header.flag=CLAW_PENDING; | |
2493 | privptr->p_read_active_first=p_this_ccw->next; | |
2494 | p_this_ccw->next=NULL; | |
2495 | p_packh = (struct clawph *)p_this_ccw->p_buffer; | |
2496 | if ((p_env->packing == PACK_SEND) && | |
2497 | (p_packh->len == 32) && | |
2498 | (p_packh->link_num == 0)) { /* is it a packed ctl rec? */ | |
2499 | p_packh++; /* peek past pack header */ | |
2500 | p_ctlrec = (struct clawctl *)p_packh; | |
2501 | p_packh--; /* un peek */ | |
2502 | if ((p_ctlrec->command == CONNECTION_RESPONSE) || | |
2503 | (p_ctlrec->command == CONNECTION_CONFIRM)) | |
2504 | p_env->packing = DO_PACKED; | |
2505 | } | |
2506 | if (p_env->packing == DO_PACKED) | |
2507 | link_num=p_packh->link_num; | |
2508 | else | |
2509 | link_num=p_this_ccw->header.opcode / 8; | |
2510 | if ((p_this_ccw->header.opcode & MORE_to_COME_FLAG)!=0) { | |
1da177e4 LT |
2511 | mtc_this_frm=1; |
2512 | if (p_this_ccw->header.length!= | |
2513 | privptr->p_env->read_size ) { | |
2514 | printk(KERN_INFO " %s: Invalid frame detected " | |
2515 | "length is %02x\n" , | |
2516 | dev->name, p_this_ccw->header.length); | |
2517 | } | |
2518 | } | |
2519 | ||
2520 | if (privptr->mtc_skipping) { | |
2521 | /* | |
2522 | * We're in the mode of skipping past a | |
2523 | * multi-frame message | |
2524 | * that we can't process for some reason or other. | |
2525 | * The first frame without the More-To-Come flag is | |
2526 | * the last frame of the skipped message. | |
2527 | */ | |
2528 | /* in case of More-To-Come not set in this frame */ | |
2529 | if (mtc_this_frm==0) { | |
2530 | privptr->mtc_skipping=0; /* Ok, the end */ | |
2531 | privptr->mtc_logical_link=-1; | |
2532 | } | |
1da177e4 LT |
2533 | goto NextFrame; |
2534 | } | |
2535 | ||
2536 | if (link_num==0) { | |
2537 | claw_process_control(dev, p_this_ccw); | |
b805da74 | 2538 | CLAW_DBF_TEXT(4, trace, "UnpkCntl"); |
1da177e4 LT |
2539 | goto NextFrame; |
2540 | } | |
2541 | unpack_next: | |
2542 | if (p_env->packing == DO_PACKED) { | |
2543 | if (pack_off > p_env->read_size) | |
2544 | goto NextFrame; | |
2545 | p_packd = p_this_ccw->p_buffer+pack_off; | |
2546 | p_packh = (struct clawph *) p_packd; | |
2547 | if ((p_packh->len == 0) || /* all done with this frame? */ | |
2548 | (p_packh->flag != 0)) | |
2549 | goto NextFrame; | |
2550 | bytes_to_mov = p_packh->len; | |
2551 | pack_off += bytes_to_mov+sizeof(struct clawph); | |
2552 | p++; | |
2553 | } else { | |
2554 | bytes_to_mov=p_this_ccw->header.length; | |
2555 | } | |
2556 | if (privptr->mtc_logical_link<0) { | |
1da177e4 LT |
2557 | |
2558 | /* | |
2559 | * if More-To-Come is set in this frame then we don't know | |
2560 | * length of entire message, and hence have to allocate | |
2561 | * large buffer */ | |
2562 | ||
2563 | /* We are starting a new envelope */ | |
2564 | privptr->mtc_offset=0; | |
2565 | privptr->mtc_logical_link=link_num; | |
2566 | } | |
2567 | ||
2568 | if (bytes_to_mov > (MAX_ENVELOPE_SIZE- privptr->mtc_offset) ) { | |
2569 | /* error */ | |
1da177e4 LT |
2570 | privptr->stats.rx_frame_errors++; |
2571 | goto NextFrame; | |
2572 | } | |
2573 | if (p_env->packing == DO_PACKED) { | |
2574 | memcpy( privptr->p_mtc_envelope+ privptr->mtc_offset, | |
2575 | p_packd+sizeof(struct clawph), bytes_to_mov); | |
2576 | ||
2577 | } else { | |
2578 | memcpy( privptr->p_mtc_envelope+ privptr->mtc_offset, | |
2579 | p_this_ccw->p_buffer, bytes_to_mov); | |
2580 | } | |
1da177e4 LT |
2581 | if (mtc_this_frm==0) { |
2582 | len_of_data=privptr->mtc_offset+bytes_to_mov; | |
2583 | skb=dev_alloc_skb(len_of_data); | |
2584 | if (skb) { | |
2585 | memcpy(skb_put(skb,len_of_data), | |
2586 | privptr->p_mtc_envelope, | |
2587 | len_of_data); | |
1da177e4 | 2588 | skb->dev=dev; |
98e399f8 | 2589 | skb_reset_mac_header(skb); |
1da177e4 LT |
2590 | skb->protocol=htons(ETH_P_IP); |
2591 | skb->ip_summed=CHECKSUM_UNNECESSARY; | |
2592 | privptr->stats.rx_packets++; | |
2593 | privptr->stats.rx_bytes+=len_of_data; | |
2594 | netif_rx(skb); | |
1da177e4 LT |
2595 | } |
2596 | else { | |
2597 | privptr->stats.rx_dropped++; | |
2598 | printk(KERN_WARNING "%s: %s() low on memory\n", | |
2a2cf6b1 | 2599 | dev->name,__func__); |
1da177e4 LT |
2600 | } |
2601 | privptr->mtc_offset=0; | |
2602 | privptr->mtc_logical_link=-1; | |
2603 | } | |
2604 | else { | |
2605 | privptr->mtc_offset+=bytes_to_mov; | |
2606 | } | |
2607 | if (p_env->packing == DO_PACKED) | |
2608 | goto unpack_next; | |
2609 | NextFrame: | |
2610 | /* | |
2611 | * Remove ThisCCWblock from active read queue, and add it | |
2612 | * to queue of free blocks to be reused. | |
2613 | */ | |
2614 | i++; | |
2615 | p_this_ccw->header.length=0xffff; | |
2616 | p_this_ccw->header.opcode=0xff; | |
2617 | /* | |
2618 | * add this one to the free queue for later reuse | |
2619 | */ | |
2620 | if (p_first_ccw==NULL) { | |
2621 | p_first_ccw = p_this_ccw; | |
2622 | } | |
2623 | else { | |
2624 | p_last_ccw->next = p_this_ccw; | |
2625 | } | |
2626 | p_last_ccw = p_this_ccw; | |
2627 | /* | |
2628 | * chain to next block on active read queue | |
2629 | */ | |
2630 | p_this_ccw = privptr->p_read_active_first; | |
b805da74 | 2631 | CLAW_DBF_TEXT_(4, trace, "rxpkt %d", p); |
1da177e4 LT |
2632 | } /* end of while */ |
2633 | ||
2634 | /* check validity */ | |
2635 | ||
b805da74 | 2636 | CLAW_DBF_TEXT_(4, trace, "rxfrm %d", i); |
1da177e4 | 2637 | add_claw_reads(dev, p_first_ccw, p_last_ccw); |
1da177e4 | 2638 | claw_strt_read(dev, LOCK_YES); |
1da177e4 LT |
2639 | return; |
2640 | } /* end of unpack_read */ | |
2641 | ||
2642 | /*-------------------------------------------------------------------* | |
2643 | * claw_strt_read * | |
2644 | * * | |
2645 | *--------------------------------------------------------------------*/ | |
2646 | static void | |
2647 | claw_strt_read (struct net_device *dev, int lock ) | |
2648 | { | |
2649 | int rc = 0; | |
2650 | __u32 parm; | |
2651 | unsigned long saveflags = 0; | |
6951df34 | 2652 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 LT |
2653 | struct ccwbk*p_ccwbk; |
2654 | struct chbk *p_ch; | |
2655 | struct clawh *p_clawh; | |
2656 | p_ch=&privptr->channel[READ]; | |
2657 | ||
b805da74 | 2658 | CLAW_DBF_TEXT(4, trace, "StRdNter"); |
1da177e4 LT |
2659 | p_clawh=(struct clawh *)privptr->p_claw_signal_blk; |
2660 | p_clawh->flag=CLAW_IDLE; /* 0x00 */ | |
2661 | ||
2662 | if ((privptr->p_write_active_first!=NULL && | |
2663 | privptr->p_write_active_first->header.flag!=CLAW_PENDING) || | |
2664 | (privptr->p_read_active_first!=NULL && | |
2665 | privptr->p_read_active_first->header.flag!=CLAW_PENDING )) { | |
2666 | p_clawh->flag=CLAW_BUSY; /* 0xff */ | |
2667 | } | |
1da177e4 LT |
2668 | if (lock==LOCK_YES) { |
2669 | spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags); | |
2670 | } | |
2671 | if (test_and_set_bit(0, (void *)&p_ch->IO_active) == 0) { | |
b805da74 | 2672 | CLAW_DBF_TEXT(4, trace, "HotRead"); |
1da177e4 LT |
2673 | p_ccwbk=privptr->p_read_active_first; |
2674 | parm = (unsigned long) p_ch; | |
2675 | rc = ccw_device_start (p_ch->cdev, &p_ccwbk->read, parm, | |
2676 | 0xff, 0); | |
2677 | if (rc != 0) { | |
2678 | ccw_check_return_code(p_ch->cdev, rc); | |
2679 | } | |
2680 | } | |
2681 | else { | |
b805da74 | 2682 | CLAW_DBF_TEXT(2, trace, "ReadAct"); |
1da177e4 LT |
2683 | } |
2684 | ||
2685 | if (lock==LOCK_YES) { | |
2686 | spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags); | |
2687 | } | |
b805da74 | 2688 | CLAW_DBF_TEXT(4, trace, "StRdExit"); |
1da177e4 LT |
2689 | return; |
2690 | } /* end of claw_strt_read */ | |
2691 | ||
2692 | /*-------------------------------------------------------------------* | |
2693 | * claw_strt_out_IO * | |
2694 | * * | |
2695 | *--------------------------------------------------------------------*/ | |
2696 | ||
2697 | static void | |
2698 | claw_strt_out_IO( struct net_device *dev ) | |
2699 | { | |
2700 | int rc = 0; | |
2701 | unsigned long parm; | |
2702 | struct claw_privbk *privptr; | |
2703 | struct chbk *p_ch; | |
2704 | struct ccwbk *p_first_ccw; | |
2705 | ||
1da177e4 LT |
2706 | if (!dev) { |
2707 | return; | |
2708 | } | |
6951df34 | 2709 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
2710 | p_ch=&privptr->channel[WRITE]; |
2711 | ||
b805da74 | 2712 | CLAW_DBF_TEXT(4, trace, "strt_io"); |
1da177e4 LT |
2713 | p_first_ccw=privptr->p_write_active_first; |
2714 | ||
2715 | if (p_ch->claw_state == CLAW_STOP) | |
2716 | return; | |
2717 | if (p_first_ccw == NULL) { | |
1da177e4 LT |
2718 | return; |
2719 | } | |
2720 | if (test_and_set_bit(0, (void *)&p_ch->IO_active) == 0) { | |
2721 | parm = (unsigned long) p_ch; | |
b805da74 | 2722 | CLAW_DBF_TEXT(2, trace, "StWrtIO"); |
1da177e4 LT |
2723 | rc = ccw_device_start (p_ch->cdev,&p_first_ccw->write, parm, |
2724 | 0xff, 0); | |
2725 | if (rc != 0) { | |
2726 | ccw_check_return_code(p_ch->cdev, rc); | |
2727 | } | |
2728 | } | |
2729 | dev->trans_start = jiffies; | |
1da177e4 LT |
2730 | return; |
2731 | } /* end of claw_strt_out_IO */ | |
2732 | ||
2733 | /*-------------------------------------------------------------------* | |
2734 | * Free write buffers * | |
2735 | * * | |
2736 | *--------------------------------------------------------------------*/ | |
2737 | ||
2738 | static void | |
2739 | claw_free_wrt_buf( struct net_device *dev ) | |
2740 | { | |
2741 | ||
6951df34 | 2742 | struct claw_privbk *privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
2743 | struct ccwbk*p_first_ccw; |
2744 | struct ccwbk*p_last_ccw; | |
2745 | struct ccwbk*p_this_ccw; | |
2746 | struct ccwbk*p_next_ccw; | |
b805da74 AR |
2747 | |
2748 | CLAW_DBF_TEXT(4, trace, "freewrtb"); | |
1da177e4 LT |
2749 | /* scan the write queue to free any completed write packets */ |
2750 | p_first_ccw=NULL; | |
2751 | p_last_ccw=NULL; | |
1da177e4 LT |
2752 | p_this_ccw=privptr->p_write_active_first; |
2753 | while ( (p_this_ccw!=NULL) && (p_this_ccw->header.flag!=CLAW_PENDING)) | |
2754 | { | |
2755 | p_next_ccw = p_this_ccw->next; | |
2756 | if (((p_next_ccw!=NULL) && | |
2757 | (p_next_ccw->header.flag!=CLAW_PENDING)) || | |
2758 | ((p_this_ccw == privptr->p_write_active_last) && | |
2759 | (p_this_ccw->header.flag!=CLAW_PENDING))) { | |
2760 | /* The next CCW is OK or this is */ | |
2761 | /* the last CCW...free it @A1A */ | |
2762 | privptr->p_write_active_first=p_this_ccw->next; | |
2763 | p_this_ccw->header.flag=CLAW_PENDING; | |
2764 | p_this_ccw->next=privptr->p_write_free_chain; | |
2765 | privptr->p_write_free_chain=p_this_ccw; | |
2766 | ++privptr->write_free_count; | |
2767 | privptr->stats.tx_bytes+= p_this_ccw->write.count; | |
2768 | p_this_ccw=privptr->p_write_active_first; | |
2769 | privptr->stats.tx_packets++; | |
2770 | } | |
2771 | else { | |
2772 | break; | |
2773 | } | |
2774 | } | |
2775 | if (privptr->write_free_count!=0) { | |
2776 | claw_clearbit_busy(TB_NOBUFFER,dev); | |
2777 | } | |
2778 | /* whole chain removed? */ | |
2779 | if (privptr->p_write_active_first==NULL) { | |
2780 | privptr->p_write_active_last=NULL; | |
1da177e4 | 2781 | } |
b805da74 | 2782 | CLAW_DBF_TEXT_(4, trace, "FWC=%d", privptr->write_free_count); |
1da177e4 LT |
2783 | return; |
2784 | } | |
2785 | ||
2786 | /*-------------------------------------------------------------------* | |
2787 | * claw free netdevice * | |
2788 | * * | |
2789 | *--------------------------------------------------------------------*/ | |
2790 | static void | |
2791 | claw_free_netdevice(struct net_device * dev, int free_dev) | |
2792 | { | |
2793 | struct claw_privbk *privptr; | |
1da177e4 | 2794 | |
b805da74 | 2795 | CLAW_DBF_TEXT(2, setup, "free_dev"); |
1da177e4 LT |
2796 | if (!dev) |
2797 | return; | |
b805da74 | 2798 | CLAW_DBF_TEXT_(2, setup, "%s", dev->name); |
6951df34 | 2799 | privptr = dev->ml_priv; |
1da177e4 LT |
2800 | if (dev->flags & IFF_RUNNING) |
2801 | claw_release(dev); | |
2802 | if (privptr) { | |
2803 | privptr->channel[READ].ndev = NULL; /* say it's free */ | |
2804 | } | |
6951df34 | 2805 | dev->ml_priv = NULL; |
1da177e4 LT |
2806 | #ifdef MODULE |
2807 | if (free_dev) { | |
2808 | free_netdev(dev); | |
2809 | } | |
2810 | #endif | |
b805da74 | 2811 | CLAW_DBF_TEXT(2, setup, "free_ok"); |
1da177e4 LT |
2812 | } |
2813 | ||
2814 | /** | |
2815 | * Claw init netdevice | |
2816 | * Initialize everything of the net device except the name and the | |
2817 | * channel structs. | |
2818 | */ | |
2819 | static void | |
2820 | claw_init_netdevice(struct net_device * dev) | |
2821 | { | |
b805da74 AR |
2822 | CLAW_DBF_TEXT(2, setup, "init_dev"); |
2823 | CLAW_DBF_TEXT_(2, setup, "%s", dev->name); | |
1da177e4 LT |
2824 | dev->mtu = CLAW_DEFAULT_MTU_SIZE; |
2825 | dev->hard_start_xmit = claw_tx; | |
2826 | dev->open = claw_open; | |
2827 | dev->stop = claw_release; | |
2828 | dev->get_stats = claw_stats; | |
2829 | dev->change_mtu = claw_change_mtu; | |
2830 | dev->hard_header_len = 0; | |
2831 | dev->addr_len = 0; | |
2832 | dev->type = ARPHRD_SLIP; | |
2833 | dev->tx_queue_len = 1300; | |
2834 | dev->flags = IFF_POINTOPOINT | IFF_NOARP; | |
b805da74 | 2835 | CLAW_DBF_TEXT(2, setup, "initok"); |
1da177e4 LT |
2836 | return; |
2837 | } | |
2838 | ||
2839 | /** | |
2840 | * Init a new channel in the privptr->channel[i]. | |
2841 | * | |
2842 | * @param cdev The ccw_device to be added. | |
2843 | * | |
2844 | * @return 0 on success, !0 on error. | |
2845 | */ | |
2846 | static int | |
2847 | add_channel(struct ccw_device *cdev,int i,struct claw_privbk *privptr) | |
2848 | { | |
2849 | struct chbk *p_ch; | |
dc5bc0ca | 2850 | struct ccw_dev_id dev_id; |
1da177e4 | 2851 | |
2a0217d5 | 2852 | CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cdev->dev)); |
1da177e4 LT |
2853 | privptr->channel[i].flag = i+1; /* Read is 1 Write is 2 */ |
2854 | p_ch = &privptr->channel[i]; | |
2855 | p_ch->cdev = cdev; | |
2a0217d5 | 2856 | snprintf(p_ch->id, CLAW_ID_SIZE, "cl-%s", dev_name(&cdev->dev)); |
dc5bc0ca CH |
2857 | ccw_device_get_id(cdev, &dev_id); |
2858 | p_ch->devno = dev_id.devno; | |
dd00cc48 | 2859 | if ((p_ch->irb = kzalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) { |
1da177e4 LT |
2860 | return -ENOMEM; |
2861 | } | |
1da177e4 LT |
2862 | return 0; |
2863 | } | |
2864 | ||
2865 | ||
2866 | /** | |
2867 | * | |
2868 | * Setup an interface. | |
2869 | * | |
2870 | * @param cgdev Device to be setup. | |
2871 | * | |
2872 | * @returns 0 on success, !0 on failure. | |
2873 | */ | |
2874 | static int | |
2875 | claw_new_device(struct ccwgroup_device *cgdev) | |
2876 | { | |
2877 | struct claw_privbk *privptr; | |
2878 | struct claw_env *p_env; | |
2879 | struct net_device *dev; | |
2880 | int ret; | |
dc5bc0ca | 2881 | struct ccw_dev_id dev_id; |
1da177e4 | 2882 | |
b9d3aed7 CH |
2883 | printk(KERN_INFO "claw: add for %s\n", |
2884 | dev_name(&cgdev->cdev[READ]->dev)); | |
b805da74 | 2885 | CLAW_DBF_TEXT(2, setup, "new_dev"); |
1da177e4 LT |
2886 | privptr = cgdev->dev.driver_data; |
2887 | cgdev->cdev[READ]->dev.driver_data = privptr; | |
2888 | cgdev->cdev[WRITE]->dev.driver_data = privptr; | |
2889 | if (!privptr) | |
2890 | return -ENODEV; | |
2891 | p_env = privptr->p_env; | |
dc5bc0ca CH |
2892 | ccw_device_get_id(cgdev->cdev[READ], &dev_id); |
2893 | p_env->devno[READ] = dev_id.devno; | |
2894 | ccw_device_get_id(cgdev->cdev[WRITE], &dev_id); | |
2895 | p_env->devno[WRITE] = dev_id.devno; | |
1da177e4 LT |
2896 | ret = add_channel(cgdev->cdev[0],0,privptr); |
2897 | if (ret == 0) | |
2898 | ret = add_channel(cgdev->cdev[1],1,privptr); | |
2899 | if (ret != 0) { | |
b805da74 AR |
2900 | printk(KERN_WARNING |
2901 | "add channel failed with ret = %d\n", ret); | |
2902 | goto out; | |
1da177e4 LT |
2903 | } |
2904 | ret = ccw_device_set_online(cgdev->cdev[READ]); | |
2905 | if (ret != 0) { | |
2906 | printk(KERN_WARNING | |
b805da74 | 2907 | "claw: ccw_device_set_online %s READ failed " |
b9d3aed7 CH |
2908 | "with ret = %d\n", dev_name(&cgdev->cdev[READ]->dev), |
2909 | ret); | |
1da177e4 LT |
2910 | goto out; |
2911 | } | |
2912 | ret = ccw_device_set_online(cgdev->cdev[WRITE]); | |
2913 | if (ret != 0) { | |
2914 | printk(KERN_WARNING | |
b805da74 | 2915 | "claw: ccw_device_set_online %s WRITE failed " |
ebe05d06 | 2916 | "with ret = %d\n", dev_name(&cgdev->cdev[WRITE]->dev), |
b9d3aed7 | 2917 | ret); |
1da177e4 LT |
2918 | goto out; |
2919 | } | |
2920 | dev = alloc_netdev(0,"claw%d",claw_init_netdevice); | |
2921 | if (!dev) { | |
2a2cf6b1 | 2922 | printk(KERN_WARNING "%s:alloc_netdev failed\n",__func__); |
1da177e4 LT |
2923 | goto out; |
2924 | } | |
6951df34 | 2925 | dev->ml_priv = privptr; |
1da177e4 LT |
2926 | cgdev->dev.driver_data = privptr; |
2927 | cgdev->cdev[READ]->dev.driver_data = privptr; | |
2928 | cgdev->cdev[WRITE]->dev.driver_data = privptr; | |
2929 | /* sysfs magic */ | |
2930 | SET_NETDEV_DEV(dev, &cgdev->dev); | |
2931 | if (register_netdev(dev) != 0) { | |
2932 | claw_free_netdevice(dev, 1); | |
b805da74 | 2933 | CLAW_DBF_TEXT(2, trace, "regfail"); |
1da177e4 LT |
2934 | goto out; |
2935 | } | |
2936 | dev->flags &=~IFF_RUNNING; | |
2937 | if (privptr->buffs_alloc == 0) { | |
2938 | ret=init_ccw_bk(dev); | |
2939 | if (ret !=0) { | |
1da177e4 LT |
2940 | unregister_netdev(dev); |
2941 | claw_free_netdevice(dev,1); | |
b805da74 | 2942 | CLAW_DBF_TEXT(2, trace, "ccwmem"); |
1da177e4 LT |
2943 | goto out; |
2944 | } | |
2945 | } | |
2946 | privptr->channel[READ].ndev = dev; | |
2947 | privptr->channel[WRITE].ndev = dev; | |
2948 | privptr->p_env->ndev = dev; | |
2949 | ||
2950 | printk(KERN_INFO "%s:readsize=%d writesize=%d " | |
2951 | "readbuffer=%d writebuffer=%d read=0x%04x write=0x%04x\n", | |
2952 | dev->name, p_env->read_size, | |
2953 | p_env->write_size, p_env->read_buffers, | |
2954 | p_env->write_buffers, p_env->devno[READ], | |
2955 | p_env->devno[WRITE]); | |
2956 | printk(KERN_INFO "%s:host_name:%.8s, adapter_name " | |
2957 | ":%.8s api_type: %.8s\n", | |
2958 | dev->name, p_env->host_name, | |
2959 | p_env->adapter_name , p_env->api_type); | |
2960 | return 0; | |
2961 | out: | |
2962 | ccw_device_set_offline(cgdev->cdev[1]); | |
2963 | ccw_device_set_offline(cgdev->cdev[0]); | |
1da177e4 LT |
2964 | return -ENODEV; |
2965 | } | |
2966 | ||
2967 | static void | |
2968 | claw_purge_skb_queue(struct sk_buff_head *q) | |
2969 | { | |
2970 | struct sk_buff *skb; | |
2971 | ||
b805da74 | 2972 | CLAW_DBF_TEXT(4, trace, "purgque"); |
1da177e4 LT |
2973 | while ((skb = skb_dequeue(q))) { |
2974 | atomic_dec(&skb->users); | |
8e84c801 | 2975 | dev_kfree_skb_any(skb); |
1da177e4 LT |
2976 | } |
2977 | } | |
2978 | ||
2979 | /** | |
2980 | * Shutdown an interface. | |
2981 | * | |
2982 | * @param cgdev Device to be shut down. | |
2983 | * | |
2984 | * @returns 0 on success, !0 on failure. | |
2985 | */ | |
2986 | static int | |
2987 | claw_shutdown_device(struct ccwgroup_device *cgdev) | |
2988 | { | |
2989 | struct claw_privbk *priv; | |
2990 | struct net_device *ndev; | |
2991 | int ret; | |
2992 | ||
b9d3aed7 | 2993 | CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev)); |
1da177e4 LT |
2994 | priv = cgdev->dev.driver_data; |
2995 | if (!priv) | |
2996 | return -ENODEV; | |
2997 | ndev = priv->channel[READ].ndev; | |
2998 | if (ndev) { | |
2999 | /* Close the device */ | |
3000 | printk(KERN_INFO | |
3001 | "%s: shuting down \n",ndev->name); | |
3002 | if (ndev->flags & IFF_RUNNING) | |
3003 | ret = claw_release(ndev); | |
3004 | ndev->flags &=~IFF_RUNNING; | |
3005 | unregister_netdev(ndev); | |
6951df34 | 3006 | ndev->ml_priv = NULL; /* cgdev data, not ndev's to free */ |
1da177e4 LT |
3007 | claw_free_netdevice(ndev, 1); |
3008 | priv->channel[READ].ndev = NULL; | |
3009 | priv->channel[WRITE].ndev = NULL; | |
3010 | priv->p_env->ndev = NULL; | |
3011 | } | |
3012 | ccw_device_set_offline(cgdev->cdev[1]); | |
3013 | ccw_device_set_offline(cgdev->cdev[0]); | |
3014 | return 0; | |
3015 | } | |
3016 | ||
3017 | static void | |
3018 | claw_remove_device(struct ccwgroup_device *cgdev) | |
3019 | { | |
3020 | struct claw_privbk *priv; | |
3021 | ||
b805da74 | 3022 | BUG_ON(!cgdev); |
b9d3aed7 | 3023 | CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev)); |
1da177e4 | 3024 | priv = cgdev->dev.driver_data; |
b805da74 | 3025 | BUG_ON(!priv); |
1da177e4 | 3026 | printk(KERN_INFO "claw: %s() called %s will be removed.\n", |
2a0217d5 | 3027 | __func__, dev_name(&cgdev->cdev[0]->dev)); |
1da177e4 LT |
3028 | if (cgdev->state == CCWGROUP_ONLINE) |
3029 | claw_shutdown_device(cgdev); | |
3030 | claw_remove_files(&cgdev->dev); | |
17fd682e JJ |
3031 | kfree(priv->p_mtc_envelope); |
3032 | priv->p_mtc_envelope=NULL; | |
3033 | kfree(priv->p_env); | |
3034 | priv->p_env=NULL; | |
3035 | kfree(priv->channel[0].irb); | |
3036 | priv->channel[0].irb=NULL; | |
3037 | kfree(priv->channel[1].irb); | |
3038 | priv->channel[1].irb=NULL; | |
1da177e4 LT |
3039 | kfree(priv); |
3040 | cgdev->dev.driver_data=NULL; | |
3041 | cgdev->cdev[READ]->dev.driver_data = NULL; | |
3042 | cgdev->cdev[WRITE]->dev.driver_data = NULL; | |
3043 | put_device(&cgdev->dev); | |
b805da74 AR |
3044 | |
3045 | return; | |
1da177e4 LT |
3046 | } |
3047 | ||
3048 | ||
3049 | /* | |
3050 | * sysfs attributes | |
3051 | */ | |
3052 | static ssize_t | |
3fd3c0a5 | 3053 | claw_hname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3054 | { |
3055 | struct claw_privbk *priv; | |
3056 | struct claw_env * p_env; | |
3057 | ||
3058 | priv = dev->driver_data; | |
3059 | if (!priv) | |
3060 | return -ENODEV; | |
3061 | p_env = priv->p_env; | |
3062 | return sprintf(buf, "%s\n",p_env->host_name); | |
3063 | } | |
3064 | ||
3065 | static ssize_t | |
3fd3c0a5 | 3066 | claw_hname_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
3067 | { |
3068 | struct claw_privbk *priv; | |
3069 | struct claw_env * p_env; | |
3070 | ||
3071 | priv = dev->driver_data; | |
3072 | if (!priv) | |
3073 | return -ENODEV; | |
3074 | p_env = priv->p_env; | |
3075 | if (count > MAX_NAME_LEN+1) | |
3076 | return -EINVAL; | |
3077 | memset(p_env->host_name, 0x20, MAX_NAME_LEN); | |
3078 | strncpy(p_env->host_name,buf, count); | |
3079 | p_env->host_name[count-1] = 0x20; /* clear extra 0x0a */ | |
3080 | p_env->host_name[MAX_NAME_LEN] = 0x00; | |
b805da74 AR |
3081 | CLAW_DBF_TEXT(2, setup, "HstnSet"); |
3082 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->host_name); | |
1da177e4 LT |
3083 | |
3084 | return count; | |
3085 | } | |
3086 | ||
3087 | static DEVICE_ATTR(host_name, 0644, claw_hname_show, claw_hname_write); | |
3088 | ||
3089 | static ssize_t | |
3fd3c0a5 | 3090 | claw_adname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3091 | { |
3092 | struct claw_privbk *priv; | |
3093 | struct claw_env * p_env; | |
3094 | ||
3095 | priv = dev->driver_data; | |
3096 | if (!priv) | |
3097 | return -ENODEV; | |
3098 | p_env = priv->p_env; | |
b805da74 | 3099 | return sprintf(buf, "%s\n", p_env->adapter_name); |
1da177e4 LT |
3100 | } |
3101 | ||
3102 | static ssize_t | |
3fd3c0a5 | 3103 | claw_adname_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
3104 | { |
3105 | struct claw_privbk *priv; | |
3106 | struct claw_env * p_env; | |
3107 | ||
3108 | priv = dev->driver_data; | |
3109 | if (!priv) | |
3110 | return -ENODEV; | |
3111 | p_env = priv->p_env; | |
3112 | if (count > MAX_NAME_LEN+1) | |
3113 | return -EINVAL; | |
3114 | memset(p_env->adapter_name, 0x20, MAX_NAME_LEN); | |
3115 | strncpy(p_env->adapter_name,buf, count); | |
3116 | p_env->adapter_name[count-1] = 0x20; /* clear extra 0x0a */ | |
3117 | p_env->adapter_name[MAX_NAME_LEN] = 0x00; | |
b805da74 AR |
3118 | CLAW_DBF_TEXT(2, setup, "AdnSet"); |
3119 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->adapter_name); | |
1da177e4 LT |
3120 | |
3121 | return count; | |
3122 | } | |
3123 | ||
3124 | static DEVICE_ATTR(adapter_name, 0644, claw_adname_show, claw_adname_write); | |
3125 | ||
3126 | static ssize_t | |
3fd3c0a5 | 3127 | claw_apname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3128 | { |
3129 | struct claw_privbk *priv; | |
3130 | struct claw_env * p_env; | |
3131 | ||
3132 | priv = dev->driver_data; | |
3133 | if (!priv) | |
3134 | return -ENODEV; | |
3135 | p_env = priv->p_env; | |
3136 | return sprintf(buf, "%s\n", | |
3137 | p_env->api_type); | |
3138 | } | |
3139 | ||
3140 | static ssize_t | |
3fd3c0a5 | 3141 | claw_apname_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
3142 | { |
3143 | struct claw_privbk *priv; | |
3144 | struct claw_env * p_env; | |
3145 | ||
3146 | priv = dev->driver_data; | |
3147 | if (!priv) | |
3148 | return -ENODEV; | |
3149 | p_env = priv->p_env; | |
3150 | if (count > MAX_NAME_LEN+1) | |
3151 | return -EINVAL; | |
3152 | memset(p_env->api_type, 0x20, MAX_NAME_LEN); | |
3153 | strncpy(p_env->api_type,buf, count); | |
3154 | p_env->api_type[count-1] = 0x20; /* we get a loose 0x0a */ | |
3155 | p_env->api_type[MAX_NAME_LEN] = 0x00; | |
3156 | if(strncmp(p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
3157 | p_env->read_size=DEF_PACK_BUFSIZE; | |
3158 | p_env->write_size=DEF_PACK_BUFSIZE; | |
3159 | p_env->packing=PACKING_ASK; | |
b805da74 | 3160 | CLAW_DBF_TEXT(2, setup, "PACKING"); |
1da177e4 LT |
3161 | } |
3162 | else { | |
3163 | p_env->packing=0; | |
3164 | p_env->read_size=CLAW_FRAME_SIZE; | |
3165 | p_env->write_size=CLAW_FRAME_SIZE; | |
b805da74 | 3166 | CLAW_DBF_TEXT(2, setup, "ApiSet"); |
1da177e4 | 3167 | } |
b805da74 | 3168 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->api_type); |
1da177e4 LT |
3169 | return count; |
3170 | } | |
3171 | ||
3172 | static DEVICE_ATTR(api_type, 0644, claw_apname_show, claw_apname_write); | |
3173 | ||
3174 | static ssize_t | |
3fd3c0a5 | 3175 | claw_wbuff_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3176 | { |
3177 | struct claw_privbk *priv; | |
3178 | struct claw_env * p_env; | |
3179 | ||
3180 | priv = dev->driver_data; | |
3181 | if (!priv) | |
3182 | return -ENODEV; | |
3183 | p_env = priv->p_env; | |
3184 | return sprintf(buf, "%d\n", p_env->write_buffers); | |
3185 | } | |
3186 | ||
3187 | static ssize_t | |
3fd3c0a5 | 3188 | claw_wbuff_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
3189 | { |
3190 | struct claw_privbk *priv; | |
3191 | struct claw_env * p_env; | |
3192 | int nnn,max; | |
3193 | ||
3194 | priv = dev->driver_data; | |
3195 | if (!priv) | |
3196 | return -ENODEV; | |
3197 | p_env = priv->p_env; | |
3198 | sscanf(buf, "%i", &nnn); | |
3199 | if (p_env->packing) { | |
3200 | max = 64; | |
3201 | } | |
3202 | else { | |
3203 | max = 512; | |
3204 | } | |
3205 | if ((nnn > max ) || (nnn < 2)) | |
3206 | return -EINVAL; | |
3207 | p_env->write_buffers = nnn; | |
b805da74 AR |
3208 | CLAW_DBF_TEXT(2, setup, "Wbufset"); |
3209 | CLAW_DBF_TEXT_(2, setup, "WB=%d", p_env->write_buffers); | |
1da177e4 LT |
3210 | return count; |
3211 | } | |
3212 | ||
3213 | static DEVICE_ATTR(write_buffer, 0644, claw_wbuff_show, claw_wbuff_write); | |
3214 | ||
3215 | static ssize_t | |
3fd3c0a5 | 3216 | claw_rbuff_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3217 | { |
3218 | struct claw_privbk *priv; | |
3219 | struct claw_env * p_env; | |
3220 | ||
3221 | priv = dev->driver_data; | |
3222 | if (!priv) | |
3223 | return -ENODEV; | |
3224 | p_env = priv->p_env; | |
3225 | return sprintf(buf, "%d\n", p_env->read_buffers); | |
3226 | } | |
3227 | ||
3228 | static ssize_t | |
3fd3c0a5 | 3229 | claw_rbuff_write(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) |
1da177e4 LT |
3230 | { |
3231 | struct claw_privbk *priv; | |
3232 | struct claw_env *p_env; | |
3233 | int nnn,max; | |
3234 | ||
3235 | priv = dev->driver_data; | |
3236 | if (!priv) | |
3237 | return -ENODEV; | |
3238 | p_env = priv->p_env; | |
3239 | sscanf(buf, "%i", &nnn); | |
3240 | if (p_env->packing) { | |
3241 | max = 64; | |
3242 | } | |
3243 | else { | |
3244 | max = 512; | |
3245 | } | |
3246 | if ((nnn > max ) || (nnn < 2)) | |
3247 | return -EINVAL; | |
3248 | p_env->read_buffers = nnn; | |
b805da74 AR |
3249 | CLAW_DBF_TEXT(2, setup, "Rbufset"); |
3250 | CLAW_DBF_TEXT_(2, setup, "RB=%d", p_env->read_buffers); | |
1da177e4 LT |
3251 | return count; |
3252 | } | |
3253 | ||
3254 | static DEVICE_ATTR(read_buffer, 0644, claw_rbuff_show, claw_rbuff_write); | |
3255 | ||
3256 | static struct attribute *claw_attr[] = { | |
3257 | &dev_attr_read_buffer.attr, | |
3258 | &dev_attr_write_buffer.attr, | |
3259 | &dev_attr_adapter_name.attr, | |
3260 | &dev_attr_api_type.attr, | |
3261 | &dev_attr_host_name.attr, | |
3262 | NULL, | |
3263 | }; | |
3264 | ||
3265 | static struct attribute_group claw_attr_group = { | |
3266 | .attrs = claw_attr, | |
3267 | }; | |
3268 | ||
3269 | static int | |
3270 | claw_add_files(struct device *dev) | |
3271 | { | |
b805da74 | 3272 | CLAW_DBF_TEXT(2, setup, "add_file"); |
1da177e4 LT |
3273 | return sysfs_create_group(&dev->kobj, &claw_attr_group); |
3274 | } | |
3275 | ||
3276 | static void | |
3277 | claw_remove_files(struct device *dev) | |
3278 | { | |
b805da74 | 3279 | CLAW_DBF_TEXT(2, setup, "rem_file"); |
1da177e4 LT |
3280 | sysfs_remove_group(&dev->kobj, &claw_attr_group); |
3281 | } | |
3282 | ||
3283 | /*--------------------------------------------------------------------* | |
3284 | * claw_init and cleanup * | |
3285 | *---------------------------------------------------------------------*/ | |
3286 | ||
3287 | static void __exit | |
3288 | claw_cleanup(void) | |
3289 | { | |
3290 | unregister_cu3088_discipline(&claw_group_driver); | |
3291 | claw_unregister_debug_facility(); | |
3292 | printk(KERN_INFO "claw: Driver unloaded\n"); | |
3293 | ||
3294 | } | |
3295 | ||
3296 | /** | |
3297 | * Initialize module. | |
3298 | * This is called just after the module is loaded. | |
3299 | * | |
3300 | * @return 0 on success, !0 on error. | |
3301 | */ | |
3302 | static int __init | |
3303 | claw_init(void) | |
3304 | { | |
3305 | int ret = 0; | |
e018ba1f | 3306 | printk(KERN_INFO "claw: starting driver\n"); |
1da177e4 | 3307 | |
1da177e4 LT |
3308 | ret = claw_register_debug_facility(); |
3309 | if (ret) { | |
3310 | printk(KERN_WARNING "claw: %s() debug_register failed %d\n", | |
2a2cf6b1 | 3311 | __func__,ret); |
1da177e4 LT |
3312 | return ret; |
3313 | } | |
b805da74 | 3314 | CLAW_DBF_TEXT(2, setup, "init_mod"); |
1da177e4 LT |
3315 | ret = register_cu3088_discipline(&claw_group_driver); |
3316 | if (ret) { | |
b805da74 | 3317 | CLAW_DBF_TEXT(2, setup, "init_bad"); |
1da177e4 LT |
3318 | claw_unregister_debug_facility(); |
3319 | printk(KERN_WARNING "claw; %s() cu3088 register failed %d\n", | |
2a2cf6b1 | 3320 | __func__,ret); |
1da177e4 | 3321 | } |
1da177e4 LT |
3322 | return ret; |
3323 | } | |
3324 | ||
3325 | module_init(claw_init); | |
3326 | module_exit(claw_cleanup); | |
3327 | ||
b805da74 AR |
3328 | MODULE_AUTHOR("Andy Richter <richtera@us.ibm.com>"); |
3329 | MODULE_DESCRIPTION("Linux for System z CLAW Driver\n" \ | |
3330 | "Copyright 2000,2008 IBM Corporation\n"); | |
3331 | MODULE_LICENSE("GPL"); |