Commit | Line | Data |
---|---|---|
1da177e4 | 1 | /* |
1da177e4 LT |
2 | * ESCON CLAW network driver |
3 | * | |
8e84c801 | 4 | * Linux for zSeries version |
88efc2c5 | 5 | * Copyright IBM Corp. 2002, 2009 |
1da177e4 | 6 | * Author(s) Original code written by: |
88efc2c5 | 7 | * Kazuo Iimura <iimura@jp.ibm.com> |
1da177e4 | 8 | * Rewritten by |
88efc2c5 FB |
9 | * Andy Richter <richtera@us.ibm.com> |
10 | * Marc Price <mwprice@us.ibm.com> | |
1da177e4 LT |
11 | * |
12 | * sysfs parms: | |
13 | * group x.x.rrrr,x.x.wwww | |
14 | * read_buffer nnnnnnn | |
15 | * write_buffer nnnnnn | |
16 | * host_name aaaaaaaa | |
17 | * adapter_name aaaaaaaa | |
18 | * api_type aaaaaaaa | |
19 | * | |
20 | * eg. | |
21 | * group 0.0.0200 0.0.0201 | |
22 | * read_buffer 25 | |
23 | * write_buffer 20 | |
24 | * host_name LINUX390 | |
25 | * adapter_name RS6K | |
26 | * api_type TCPIP | |
27 | * | |
28 | * where | |
29 | * | |
30 | * The device id is decided by the order entries | |
31 | * are added to the group the first is claw0 the second claw1 | |
32 | * up to CLAW_MAX_DEV | |
33 | * | |
34 | * rrrr - the first of 2 consecutive device addresses used for the | |
35 | * CLAW protocol. | |
36 | * The specified address is always used as the input (Read) | |
37 | * channel and the next address is used as the output channel. | |
38 | * | |
39 | * wwww - the second of 2 consecutive device addresses used for | |
40 | * the CLAW protocol. | |
41 | * The specified address is always used as the output | |
42 | * channel and the previous address is used as the input channel. | |
43 | * | |
44 | * read_buffer - specifies number of input buffers to allocate. | |
45 | * write_buffer - specifies number of output buffers to allocate. | |
46 | * host_name - host name | |
47 | * adaptor_name - adaptor name | |
48 | * api_type - API type TCPIP or API will be sent and expected | |
49 | * as ws_name | |
50 | * | |
51 | * Note the following requirements: | |
52 | * 1) host_name must match the configured adapter_name on the remote side | |
53 | * 2) adaptor_name must match the configured host name on the remote side | |
54 | * | |
55 | * Change History | |
56 | * 1.00 Initial release shipped | |
57 | * 1.10 Changes for Buffer allocation | |
58 | * 1.15 Changed for 2.6 Kernel No longer compiles on 2.4 or lower | |
59 | * 1.25 Added Packing support | |
b805da74 | 60 | * 1.5 |
1da177e4 | 61 | */ |
4811fcb7 AR |
62 | |
63 | #define KMSG_COMPONENT "claw" | |
64 | ||
1da177e4 LT |
65 | #include <asm/ccwdev.h> |
66 | #include <asm/ccwgroup.h> | |
67 | #include <asm/debug.h> | |
68 | #include <asm/idals.h> | |
69 | #include <asm/io.h> | |
1977f032 | 70 | #include <linux/bitops.h> |
1da177e4 LT |
71 | #include <linux/ctype.h> |
72 | #include <linux/delay.h> | |
73 | #include <linux/errno.h> | |
74 | #include <linux/if_arp.h> | |
75 | #include <linux/init.h> | |
76 | #include <linux/interrupt.h> | |
77 | #include <linux/ip.h> | |
78 | #include <linux/kernel.h> | |
79 | #include <linux/module.h> | |
80 | #include <linux/netdevice.h> | |
81 | #include <linux/etherdevice.h> | |
82 | #include <linux/proc_fs.h> | |
83 | #include <linux/sched.h> | |
84 | #include <linux/signal.h> | |
85 | #include <linux/skbuff.h> | |
86 | #include <linux/slab.h> | |
87 | #include <linux/string.h> | |
88 | #include <linux/tcp.h> | |
89 | #include <linux/timer.h> | |
90 | #include <linux/types.h> | |
1da177e4 | 91 | |
1da177e4 LT |
92 | #include "claw.h" |
93 | ||
b805da74 AR |
94 | /* |
95 | CLAW uses the s390dbf file system see claw_trace and claw_setup | |
1da177e4 LT |
96 | */ |
97 | ||
4811fcb7 | 98 | static char version[] __initdata = "CLAW driver"; |
2b67fc46 | 99 | static char debug_buffer[255]; |
1da177e4 LT |
100 | /** |
101 | * Debug Facility Stuff | |
102 | */ | |
103 | static debug_info_t *claw_dbf_setup; | |
104 | static debug_info_t *claw_dbf_trace; | |
105 | ||
106 | /** | |
107 | * CLAW Debug Facility functions | |
108 | */ | |
109 | static void | |
110 | claw_unregister_debug_facility(void) | |
111 | { | |
112 | if (claw_dbf_setup) | |
113 | debug_unregister(claw_dbf_setup); | |
114 | if (claw_dbf_trace) | |
115 | debug_unregister(claw_dbf_trace); | |
116 | } | |
117 | ||
118 | static int | |
119 | claw_register_debug_facility(void) | |
120 | { | |
66a464db MH |
121 | claw_dbf_setup = debug_register("claw_setup", 2, 1, 8); |
122 | claw_dbf_trace = debug_register("claw_trace", 2, 2, 8); | |
1da177e4 | 123 | if (claw_dbf_setup == NULL || claw_dbf_trace == NULL) { |
1da177e4 LT |
124 | claw_unregister_debug_facility(); |
125 | return -ENOMEM; | |
126 | } | |
127 | debug_register_view(claw_dbf_setup, &debug_hex_ascii_view); | |
128 | debug_set_level(claw_dbf_setup, 2); | |
129 | debug_register_view(claw_dbf_trace, &debug_hex_ascii_view); | |
130 | debug_set_level(claw_dbf_trace, 2); | |
131 | return 0; | |
132 | } | |
133 | ||
134 | static inline void | |
135 | claw_set_busy(struct net_device *dev) | |
136 | { | |
6951df34 | 137 | ((struct claw_privbk *)dev->ml_priv)->tbusy = 1; |
1da177e4 LT |
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 | 144 | netif_wake_queue(dev); |
1da177e4 LT |
145 | } |
146 | ||
147 | static inline int | |
148 | claw_check_busy(struct net_device *dev) | |
149 | { | |
6951df34 | 150 | return ((struct claw_privbk *) dev->ml_priv)->tbusy; |
1da177e4 LT |
151 | } |
152 | ||
153 | static inline void | |
154 | claw_setbit_busy(int nr,struct net_device *dev) | |
155 | { | |
156 | netif_stop_queue(dev); | |
6951df34 | 157 | set_bit(nr, (void *)&(((struct claw_privbk *)dev->ml_priv)->tbusy)); |
1da177e4 LT |
158 | } |
159 | ||
160 | static inline void | |
161 | claw_clearbit_busy(int nr,struct net_device *dev) | |
162 | { | |
6951df34 | 163 | clear_bit(nr, (void *)&(((struct claw_privbk *)dev->ml_priv)->tbusy)); |
1da177e4 LT |
164 | netif_wake_queue(dev); |
165 | } | |
166 | ||
167 | static inline int | |
168 | claw_test_and_setbit_busy(int nr,struct net_device *dev) | |
169 | { | |
170 | netif_stop_queue(dev); | |
171 | return test_and_set_bit(nr, | |
6951df34 | 172 | (void *)&(((struct claw_privbk *) dev->ml_priv)->tbusy)); |
1da177e4 LT |
173 | } |
174 | ||
175 | ||
176 | /* Functions for the DEV methods */ | |
177 | ||
178 | static int claw_probe(struct ccwgroup_device *cgdev); | |
179 | static void claw_remove_device(struct ccwgroup_device *cgdev); | |
180 | static void claw_purge_skb_queue(struct sk_buff_head *q); | |
181 | static int claw_new_device(struct ccwgroup_device *cgdev); | |
182 | static int claw_shutdown_device(struct ccwgroup_device *cgdev); | |
183 | static int claw_tx(struct sk_buff *skb, struct net_device *dev); | |
184 | static int claw_change_mtu( struct net_device *dev, int new_mtu); | |
185 | static int claw_open(struct net_device *dev); | |
186 | static void claw_irq_handler(struct ccw_device *cdev, | |
187 | unsigned long intparm, struct irb *irb); | |
188 | static void claw_irq_tasklet ( unsigned long data ); | |
189 | static int claw_release(struct net_device *dev); | |
190 | static void claw_write_retry ( struct chbk * p_ch ); | |
191 | static void claw_write_next ( struct chbk * p_ch ); | |
192 | static void claw_timer ( struct chbk * p_ch ); | |
193 | ||
194 | /* Functions */ | |
195 | static int add_claw_reads(struct net_device *dev, | |
196 | struct ccwbk* p_first, struct ccwbk* p_last); | |
4d284cac HC |
197 | static void ccw_check_return_code (struct ccw_device *cdev, int return_code); |
198 | static void ccw_check_unit_check (struct chbk * p_ch, unsigned char sense ); | |
1da177e4 LT |
199 | static int find_link(struct net_device *dev, char *host_name, char *ws_name ); |
200 | static int claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid); | |
201 | static int init_ccw_bk(struct net_device *dev); | |
202 | static void probe_error( struct ccwgroup_device *cgdev); | |
203 | static struct net_device_stats *claw_stats(struct net_device *dev); | |
4d284cac | 204 | static int pages_to_order_of_mag(int num_of_pages); |
1da177e4 | 205 | static struct sk_buff *claw_pack_skb(struct claw_privbk *privptr); |
1da177e4 | 206 | /* sysfs Functions */ |
4811fcb7 AR |
207 | static ssize_t claw_hname_show(struct device *dev, |
208 | struct device_attribute *attr, char *buf); | |
209 | static ssize_t claw_hname_write(struct device *dev, | |
210 | struct device_attribute *attr, | |
1da177e4 | 211 | const char *buf, size_t count); |
4811fcb7 AR |
212 | static ssize_t claw_adname_show(struct device *dev, |
213 | struct device_attribute *attr, char *buf); | |
214 | static ssize_t claw_adname_write(struct device *dev, | |
215 | struct device_attribute *attr, | |
1da177e4 | 216 | const char *buf, size_t count); |
4811fcb7 AR |
217 | static ssize_t claw_apname_show(struct device *dev, |
218 | struct device_attribute *attr, char *buf); | |
219 | static ssize_t claw_apname_write(struct device *dev, | |
220 | struct device_attribute *attr, | |
1da177e4 | 221 | const char *buf, size_t count); |
4811fcb7 AR |
222 | static ssize_t claw_wbuff_show(struct device *dev, |
223 | struct device_attribute *attr, char *buf); | |
224 | static ssize_t claw_wbuff_write(struct device *dev, | |
225 | struct device_attribute *attr, | |
1da177e4 | 226 | const char *buf, size_t count); |
4811fcb7 AR |
227 | static ssize_t claw_rbuff_show(struct device *dev, |
228 | struct device_attribute *attr, char *buf); | |
229 | static ssize_t claw_rbuff_write(struct device *dev, | |
230 | struct device_attribute *attr, | |
1da177e4 | 231 | const char *buf, size_t count); |
1da177e4 LT |
232 | |
233 | /* Functions for System Validate */ | |
234 | static int claw_process_control( struct net_device *dev, struct ccwbk * p_ccw); | |
235 | static int claw_send_control(struct net_device *dev, __u8 type, __u8 link, | |
236 | __u8 correlator, __u8 rc , char *local_name, char *remote_name); | |
237 | static int claw_snd_conn_req(struct net_device *dev, __u8 link); | |
238 | static int claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl); | |
239 | static int claw_snd_sys_validate_rsp(struct net_device *dev, | |
240 | struct clawctl * p_ctl, __u32 return_code); | |
241 | static int claw_strt_conn_req(struct net_device *dev ); | |
b805da74 AR |
242 | static void claw_strt_read(struct net_device *dev, int lock); |
243 | static void claw_strt_out_IO(struct net_device *dev); | |
244 | static void claw_free_wrt_buf(struct net_device *dev); | |
1da177e4 LT |
245 | |
246 | /* Functions for unpack reads */ | |
b805da74 | 247 | static void unpack_read(struct net_device *dev); |
1da177e4 | 248 | |
88efc2c5 FB |
249 | static int claw_pm_prepare(struct ccwgroup_device *gdev) |
250 | { | |
251 | return -EPERM; | |
252 | } | |
253 | ||
0ca8cc6f UB |
254 | /* the root device for claw group devices */ |
255 | static struct device *claw_root_dev; | |
256 | ||
1da177e4 LT |
257 | /* ccwgroup table */ |
258 | ||
259 | static struct ccwgroup_driver claw_group_driver = { | |
3c190c51 SO |
260 | .driver = { |
261 | .owner = THIS_MODULE, | |
262 | .name = "claw", | |
263 | }, | |
2ced5514 | 264 | .setup = claw_probe, |
9814fdfb SO |
265 | .remove = claw_remove_device, |
266 | .set_online = claw_new_device, | |
267 | .set_offline = claw_shutdown_device, | |
88efc2c5 | 268 | .prepare = claw_pm_prepare, |
1da177e4 LT |
269 | }; |
270 | ||
0ca8cc6f UB |
271 | static struct ccw_device_id claw_ids[] = { |
272 | {CCW_DEVICE(0x3088, 0x61), .driver_info = claw_channel_type_claw}, | |
273 | {}, | |
274 | }; | |
275 | MODULE_DEVICE_TABLE(ccw, claw_ids); | |
276 | ||
277 | static struct ccw_driver claw_ccw_driver = { | |
3bda058b SO |
278 | .driver = { |
279 | .owner = THIS_MODULE, | |
280 | .name = "claw", | |
281 | }, | |
0ca8cc6f UB |
282 | .ids = claw_ids, |
283 | .probe = ccwgroup_probe_ccwdev, | |
284 | .remove = ccwgroup_remove_ccwdev, | |
420f42ec | 285 | .int_class = IRQIO_CLW, |
0ca8cc6f UB |
286 | }; |
287 | ||
2ced5514 SO |
288 | static ssize_t claw_driver_group_store(struct device_driver *ddrv, |
289 | const char *buf, size_t count) | |
0ca8cc6f UB |
290 | { |
291 | int err; | |
9814fdfb | 292 | err = ccwgroup_create_dev(claw_root_dev, &claw_group_driver, 2, buf); |
0ca8cc6f UB |
293 | return err ? err : count; |
294 | } | |
0ca8cc6f UB |
295 | static DRIVER_ATTR(group, 0200, NULL, claw_driver_group_store); |
296 | ||
a43f8de6 | 297 | static struct attribute *claw_drv_attrs[] = { |
0ca8cc6f UB |
298 | &driver_attr_group.attr, |
299 | NULL, | |
300 | }; | |
a43f8de6 SO |
301 | static struct attribute_group claw_drv_attr_group = { |
302 | .attrs = claw_drv_attrs, | |
0ca8cc6f | 303 | }; |
a43f8de6 SO |
304 | static const struct attribute_group *claw_drv_attr_groups[] = { |
305 | &claw_drv_attr_group, | |
0ca8cc6f UB |
306 | NULL, |
307 | }; | |
308 | ||
1da177e4 | 309 | /* |
1da177e4 LT |
310 | * Key functions |
311 | */ | |
312 | ||
1da177e4 LT |
313 | /*-------------------------------------------------------------------* |
314 | * claw_tx * | |
315 | *-------------------------------------------------------------------*/ | |
316 | ||
317 | static int | |
318 | claw_tx(struct sk_buff *skb, struct net_device *dev) | |
319 | { | |
320 | int rc; | |
6951df34 | 321 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 LT |
322 | unsigned long saveflags; |
323 | struct chbk *p_ch; | |
324 | ||
b805da74 | 325 | CLAW_DBF_TEXT(4, trace, "claw_tx"); |
319cb083 | 326 | p_ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
327 | spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags); |
328 | rc=claw_hw_tx( skb, dev, 1 ); | |
329 | spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags); | |
b805da74 | 330 | CLAW_DBF_TEXT_(4, trace, "clawtx%d", rc); |
8f0c40d4 UB |
331 | if (rc) |
332 | rc = NETDEV_TX_BUSY; | |
ec634fe3 PM |
333 | else |
334 | rc = NETDEV_TX_OK; | |
1da177e4 LT |
335 | return rc; |
336 | } /* end of claw_tx */ | |
337 | ||
338 | /*------------------------------------------------------------------* | |
339 | * pack the collect queue into an skb and return it * | |
340 | * If not packing just return the top skb from the queue * | |
341 | *------------------------------------------------------------------*/ | |
342 | ||
343 | static struct sk_buff * | |
344 | claw_pack_skb(struct claw_privbk *privptr) | |
345 | { | |
346 | struct sk_buff *new_skb,*held_skb; | |
319cb083 | 347 | struct chbk *p_ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
348 | struct claw_env *p_env = privptr->p_env; |
349 | int pkt_cnt,pk_ind,so_far; | |
350 | ||
351 | new_skb = NULL; /* assume no dice */ | |
352 | pkt_cnt = 0; | |
b805da74 | 353 | CLAW_DBF_TEXT(4, trace, "PackSKBe"); |
b03efcfb | 354 | if (!skb_queue_empty(&p_ch->collect_queue)) { |
1da177e4 LT |
355 | /* some data */ |
356 | held_skb = skb_dequeue(&p_ch->collect_queue); | |
1da177e4 | 357 | if (held_skb) |
8e84c801 | 358 | dev_kfree_skb_any(held_skb); |
1da177e4 LT |
359 | else |
360 | return NULL; | |
8e84c801 FP |
361 | if (p_env->packing != DO_PACKED) |
362 | return held_skb; | |
1da177e4 LT |
363 | /* get a new SKB we will pack at least one */ |
364 | new_skb = dev_alloc_skb(p_env->write_size); | |
365 | if (new_skb == NULL) { | |
366 | atomic_inc(&held_skb->users); | |
367 | skb_queue_head(&p_ch->collect_queue,held_skb); | |
368 | return NULL; | |
369 | } | |
370 | /* we have packed packet and a place to put it */ | |
371 | pk_ind = 1; | |
372 | so_far = 0; | |
373 | new_skb->cb[1] = 'P'; /* every skb on queue has pack header */ | |
374 | while ((pk_ind) && (held_skb != NULL)) { | |
375 | if (held_skb->len+so_far <= p_env->write_size-8) { | |
376 | memcpy(skb_put(new_skb,held_skb->len), | |
377 | held_skb->data,held_skb->len); | |
378 | privptr->stats.tx_packets++; | |
379 | so_far += held_skb->len; | |
380 | pkt_cnt++; | |
8e84c801 | 381 | dev_kfree_skb_any(held_skb); |
1da177e4 LT |
382 | held_skb = skb_dequeue(&p_ch->collect_queue); |
383 | if (held_skb) | |
384 | atomic_dec(&held_skb->users); | |
385 | } else { | |
386 | pk_ind = 0; | |
387 | atomic_inc(&held_skb->users); | |
388 | skb_queue_head(&p_ch->collect_queue,held_skb); | |
389 | } | |
390 | } | |
1da177e4 | 391 | } |
b805da74 | 392 | CLAW_DBF_TEXT(4, trace, "PackSKBx"); |
1da177e4 LT |
393 | return new_skb; |
394 | } | |
395 | ||
396 | /*-------------------------------------------------------------------* | |
397 | * claw_change_mtu * | |
398 | * * | |
399 | *-------------------------------------------------------------------*/ | |
400 | ||
401 | static int | |
402 | claw_change_mtu(struct net_device *dev, int new_mtu) | |
403 | { | |
6951df34 | 404 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 | 405 | int buff_size; |
b805da74 | 406 | CLAW_DBF_TEXT(4, trace, "setmtu"); |
1da177e4 LT |
407 | buff_size = privptr->p_env->write_size; |
408 | if ((new_mtu < 60) || (new_mtu > buff_size)) { | |
1da177e4 LT |
409 | return -EINVAL; |
410 | } | |
411 | dev->mtu = new_mtu; | |
1da177e4 LT |
412 | return 0; |
413 | } /* end of claw_change_mtu */ | |
414 | ||
415 | ||
416 | /*-------------------------------------------------------------------* | |
417 | * claw_open * | |
418 | * * | |
419 | *-------------------------------------------------------------------*/ | |
420 | static int | |
421 | claw_open(struct net_device *dev) | |
422 | { | |
423 | ||
424 | int rc; | |
425 | int i; | |
426 | unsigned long saveflags=0; | |
427 | unsigned long parm; | |
428 | struct claw_privbk *privptr; | |
429 | DECLARE_WAITQUEUE(wait, current); | |
430 | struct timer_list timer; | |
431 | struct ccwbk *p_buf; | |
432 | ||
b805da74 | 433 | CLAW_DBF_TEXT(4, trace, "open"); |
6951df34 | 434 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
435 | /* allocate and initialize CCW blocks */ |
436 | if (privptr->buffs_alloc == 0) { | |
437 | rc=init_ccw_bk(dev); | |
438 | if (rc) { | |
b805da74 | 439 | CLAW_DBF_TEXT(2, trace, "openmem"); |
1da177e4 LT |
440 | return -ENOMEM; |
441 | } | |
442 | } | |
443 | privptr->system_validate_comp=0; | |
444 | privptr->release_pend=0; | |
445 | if(strncmp(privptr->p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
446 | privptr->p_env->read_size=DEF_PACK_BUFSIZE; | |
447 | privptr->p_env->write_size=DEF_PACK_BUFSIZE; | |
448 | privptr->p_env->packing=PACKING_ASK; | |
449 | } else { | |
450 | privptr->p_env->packing=0; | |
451 | privptr->p_env->read_size=CLAW_FRAME_SIZE; | |
452 | privptr->p_env->write_size=CLAW_FRAME_SIZE; | |
453 | } | |
454 | claw_set_busy(dev); | |
319cb083 HC |
455 | tasklet_init(&privptr->channel[READ_CHANNEL].tasklet, claw_irq_tasklet, |
456 | (unsigned long) &privptr->channel[READ_CHANNEL]); | |
1da177e4 | 457 | for ( i = 0; i < 2; i++) { |
b805da74 | 458 | CLAW_DBF_TEXT_(2, trace, "opn_ch%d", i); |
1da177e4 LT |
459 | init_waitqueue_head(&privptr->channel[i].wait); |
460 | /* skb_queue_head_init(&p_ch->io_queue); */ | |
319cb083 | 461 | if (i == WRITE_CHANNEL) |
1da177e4 | 462 | skb_queue_head_init( |
319cb083 | 463 | &privptr->channel[WRITE_CHANNEL].collect_queue); |
1da177e4 LT |
464 | privptr->channel[i].flag_a = 0; |
465 | privptr->channel[i].IO_active = 0; | |
466 | privptr->channel[i].flag &= ~CLAW_TIMER; | |
467 | init_timer(&timer); | |
468 | timer.function = (void *)claw_timer; | |
469 | timer.data = (unsigned long)(&privptr->channel[i]); | |
470 | timer.expires = jiffies + 15*HZ; | |
471 | add_timer(&timer); | |
472 | spin_lock_irqsave(get_ccwdev_lock( | |
473 | privptr->channel[i].cdev), saveflags); | |
474 | parm = (unsigned long) &privptr->channel[i]; | |
475 | privptr->channel[i].claw_state = CLAW_START_HALT_IO; | |
476 | rc = 0; | |
477 | add_wait_queue(&privptr->channel[i].wait, &wait); | |
478 | rc = ccw_device_halt( | |
479 | (struct ccw_device *)privptr->channel[i].cdev,parm); | |
480 | set_current_state(TASK_INTERRUPTIBLE); | |
481 | spin_unlock_irqrestore( | |
482 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
483 | schedule(); | |
484 | set_current_state(TASK_RUNNING); | |
485 | remove_wait_queue(&privptr->channel[i].wait, &wait); | |
486 | if(rc != 0) | |
487 | ccw_check_return_code(privptr->channel[i].cdev, rc); | |
488 | if((privptr->channel[i].flag & CLAW_TIMER) == 0x00) | |
489 | del_timer(&timer); | |
490 | } | |
319cb083 HC |
491 | if ((((privptr->channel[READ_CHANNEL].last_dstat | |
492 | privptr->channel[WRITE_CHANNEL].last_dstat) & | |
1da177e4 | 493 | ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) || |
319cb083 HC |
494 | (((privptr->channel[READ_CHANNEL].flag | |
495 | privptr->channel[WRITE_CHANNEL].flag) & CLAW_TIMER) != 0x00)) { | |
496 | dev_info(&privptr->channel[READ_CHANNEL].cdev->dev, | |
4811fcb7 | 497 | "%s: remote side is not ready\n", dev->name); |
b805da74 | 498 | CLAW_DBF_TEXT(2, trace, "notrdy"); |
1da177e4 LT |
499 | |
500 | for ( i = 0; i < 2; i++) { | |
501 | spin_lock_irqsave( | |
502 | get_ccwdev_lock(privptr->channel[i].cdev), | |
503 | saveflags); | |
504 | parm = (unsigned long) &privptr->channel[i]; | |
505 | privptr->channel[i].claw_state = CLAW_STOP; | |
506 | rc = ccw_device_halt( | |
507 | (struct ccw_device *)&privptr->channel[i].cdev, | |
508 | parm); | |
509 | spin_unlock_irqrestore( | |
510 | get_ccwdev_lock(privptr->channel[i].cdev), | |
511 | saveflags); | |
512 | if (rc != 0) { | |
513 | ccw_check_return_code( | |
514 | privptr->channel[i].cdev, rc); | |
515 | } | |
516 | } | |
517 | free_pages((unsigned long)privptr->p_buff_ccw, | |
518 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
519 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
520 | free_pages((unsigned long)privptr->p_buff_read, | |
521 | (int)pages_to_order_of_mag( | |
522 | privptr->p_buff_read_num)); | |
523 | } | |
524 | else { | |
525 | p_buf=privptr->p_read_active_first; | |
526 | while (p_buf!=NULL) { | |
527 | free_pages((unsigned long)p_buf->p_buffer, | |
528 | (int)pages_to_order_of_mag( | |
529 | privptr->p_buff_pages_perread )); | |
530 | p_buf=p_buf->next; | |
531 | } | |
532 | } | |
533 | if (privptr->p_env->write_size < PAGE_SIZE ) { | |
534 | free_pages((unsigned long)privptr->p_buff_write, | |
535 | (int)pages_to_order_of_mag( | |
536 | privptr->p_buff_write_num)); | |
537 | } | |
538 | else { | |
539 | p_buf=privptr->p_write_active_first; | |
540 | while (p_buf!=NULL) { | |
541 | free_pages((unsigned long)p_buf->p_buffer, | |
542 | (int)pages_to_order_of_mag( | |
543 | privptr->p_buff_pages_perwrite )); | |
544 | p_buf=p_buf->next; | |
545 | } | |
546 | } | |
547 | privptr->buffs_alloc = 0; | |
319cb083 HC |
548 | privptr->channel[READ_CHANNEL].flag = 0x00; |
549 | privptr->channel[WRITE_CHANNEL].flag = 0x00; | |
1da177e4 LT |
550 | privptr->p_buff_ccw=NULL; |
551 | privptr->p_buff_read=NULL; | |
552 | privptr->p_buff_write=NULL; | |
553 | claw_clear_busy(dev); | |
b805da74 | 554 | CLAW_DBF_TEXT(2, trace, "open EIO"); |
1da177e4 LT |
555 | return -EIO; |
556 | } | |
557 | ||
558 | /* Send SystemValidate command */ | |
559 | ||
560 | claw_clear_busy(dev); | |
b805da74 | 561 | CLAW_DBF_TEXT(4, trace, "openok"); |
1da177e4 LT |
562 | return 0; |
563 | } /* end of claw_open */ | |
564 | ||
565 | /*-------------------------------------------------------------------* | |
566 | * * | |
567 | * claw_irq_handler * | |
568 | * * | |
569 | *--------------------------------------------------------------------*/ | |
570 | static void | |
571 | claw_irq_handler(struct ccw_device *cdev, | |
572 | unsigned long intparm, struct irb *irb) | |
573 | { | |
574 | struct chbk *p_ch = NULL; | |
575 | struct claw_privbk *privptr = NULL; | |
576 | struct net_device *dev = NULL; | |
577 | struct claw_env *p_env; | |
578 | struct chbk *p_ch_r=NULL; | |
579 | ||
b805da74 | 580 | CLAW_DBF_TEXT(4, trace, "clawirq"); |
1da177e4 | 581 | /* Bypass all 'unsolicited interrupts' */ |
dff59b64 GKH |
582 | privptr = dev_get_drvdata(&cdev->dev); |
583 | if (!privptr) { | |
4811fcb7 AR |
584 | dev_warn(&cdev->dev, "An uninitialized CLAW device received an" |
585 | " IRQ, c-%02x d-%02x\n", | |
586 | irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); | |
b805da74 | 587 | CLAW_DBF_TEXT(2, trace, "badirq"); |
1da177e4 LT |
588 | return; |
589 | } | |
1da177e4 LT |
590 | |
591 | /* Try to extract channel from driver data. */ | |
319cb083 HC |
592 | if (privptr->channel[READ_CHANNEL].cdev == cdev) |
593 | p_ch = &privptr->channel[READ_CHANNEL]; | |
594 | else if (privptr->channel[WRITE_CHANNEL].cdev == cdev) | |
595 | p_ch = &privptr->channel[WRITE_CHANNEL]; | |
1da177e4 | 596 | else { |
4811fcb7 | 597 | dev_warn(&cdev->dev, "The device is not a CLAW device\n"); |
b805da74 | 598 | CLAW_DBF_TEXT(2, trace, "badchan"); |
1da177e4 LT |
599 | return; |
600 | } | |
b805da74 | 601 | CLAW_DBF_TEXT_(4, trace, "IRQCH=%d", p_ch->flag); |
1da177e4 LT |
602 | |
603 | dev = (struct net_device *) (p_ch->ndev); | |
604 | p_env=privptr->p_env; | |
605 | ||
1da177e4 LT |
606 | /* Copy interruption response block. */ |
607 | memcpy(p_ch->irb, irb, sizeof(struct irb)); | |
608 | ||
b805da74 | 609 | /* Check for good subchannel return code, otherwise info message */ |
23d805b6 | 610 | if (irb->scsw.cmd.cstat && !(irb->scsw.cmd.cstat & SCHN_STAT_PCI)) { |
4811fcb7 AR |
611 | dev_info(&cdev->dev, |
612 | "%s: subchannel check for device: %04x -" | |
1da177e4 LT |
613 | " Sch Stat %02x Dev Stat %02x CPA - %04x\n", |
614 | dev->name, p_ch->devno, | |
23d805b6 PO |
615 | irb->scsw.cmd.cstat, irb->scsw.cmd.dstat, |
616 | irb->scsw.cmd.cpa); | |
b805da74 | 617 | CLAW_DBF_TEXT(2, trace, "chanchk"); |
1da177e4 LT |
618 | /* return; */ |
619 | } | |
620 | ||
621 | /* Check the reason-code of a unit check */ | |
23d805b6 | 622 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
1da177e4 | 623 | ccw_check_unit_check(p_ch, irb->ecw[0]); |
1da177e4 LT |
624 | |
625 | /* State machine to bring the connection up, down and to restart */ | |
23d805b6 | 626 | p_ch->last_dstat = irb->scsw.cmd.dstat; |
1da177e4 LT |
627 | |
628 | switch (p_ch->claw_state) { | |
b805da74 AR |
629 | case CLAW_STOP:/* HALT_IO by claw_release (halt sequence) */ |
630 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
631 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
632 | (p_ch->irb->scsw.cmd.stctl == | |
633 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) | |
634 | return; | |
635 | wake_up(&p_ch->wait); /* wake up claw_release */ | |
636 | CLAW_DBF_TEXT(4, trace, "stop"); | |
637 | return; | |
638 | case CLAW_START_HALT_IO: /* HALT_IO issued by claw_open */ | |
639 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
640 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
641 | (p_ch->irb->scsw.cmd.stctl == | |
642 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
643 | CLAW_DBF_TEXT(4, trace, "haltio"); | |
644 | return; | |
645 | } | |
646 | if (p_ch->flag == CLAW_READ) { | |
647 | p_ch->claw_state = CLAW_START_READ; | |
648 | wake_up(&p_ch->wait); /* wake claw_open (READ)*/ | |
649 | } else if (p_ch->flag == CLAW_WRITE) { | |
650 | p_ch->claw_state = CLAW_START_WRITE; | |
4811fcb7 | 651 | /* send SYSTEM_VALIDATE */ |
b805da74 AR |
652 | claw_strt_read(dev, LOCK_NO); |
653 | claw_send_control(dev, | |
654 | SYSTEM_VALIDATE_REQUEST, | |
655 | 0, 0, 0, | |
656 | p_env->host_name, | |
657 | p_env->adapter_name); | |
658 | } else { | |
4811fcb7 AR |
659 | dev_warn(&cdev->dev, "The CLAW device received" |
660 | " an unexpected IRQ, " | |
661 | "c-%02x d-%02x\n", | |
b805da74 AR |
662 | irb->scsw.cmd.cstat, |
663 | irb->scsw.cmd.dstat); | |
664 | return; | |
665 | } | |
666 | CLAW_DBF_TEXT(4, trace, "haltio"); | |
667 | return; | |
668 | case CLAW_START_READ: | |
669 | CLAW_DBF_TEXT(4, trace, "ReadIRQ"); | |
670 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { | |
671 | clear_bit(0, (void *)&p_ch->IO_active); | |
672 | if ((p_ch->irb->ecw[0] & 0x41) == 0x41 || | |
673 | (p_ch->irb->ecw[0] & 0x40) == 0x40 || | |
674 | (p_ch->irb->ecw[0]) == 0) { | |
675 | privptr->stats.rx_errors++; | |
4811fcb7 AR |
676 | dev_info(&cdev->dev, |
677 | "%s: Restart is required after remote " | |
b805da74 AR |
678 | "side recovers \n", |
679 | dev->name); | |
680 | } | |
681 | CLAW_DBF_TEXT(4, trace, "notrdy"); | |
682 | return; | |
683 | } | |
684 | if ((p_ch->irb->scsw.cmd.cstat & SCHN_STAT_PCI) && | |
685 | (p_ch->irb->scsw.cmd.dstat == 0)) { | |
686 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
687 | (void *)&p_ch->flag_a) == 0) | |
688 | tasklet_schedule(&p_ch->tasklet); | |
1da177e4 | 689 | else |
b805da74 AR |
690 | CLAW_DBF_TEXT(4, trace, "PCINoBH"); |
691 | CLAW_DBF_TEXT(4, trace, "PCI_read"); | |
692 | return; | |
693 | } | |
694 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
695 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
696 | (p_ch->irb->scsw.cmd.stctl == | |
697 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
698 | CLAW_DBF_TEXT(4, trace, "SPend_rd"); | |
699 | return; | |
700 | } | |
701 | clear_bit(0, (void *)&p_ch->IO_active); | |
702 | claw_clearbit_busy(TB_RETRY, dev); | |
703 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
704 | (void *)&p_ch->flag_a) == 0) | |
705 | tasklet_schedule(&p_ch->tasklet); | |
706 | else | |
707 | CLAW_DBF_TEXT(4, trace, "RdBHAct"); | |
708 | CLAW_DBF_TEXT(4, trace, "RdIRQXit"); | |
709 | return; | |
710 | case CLAW_START_WRITE: | |
711 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { | |
4811fcb7 | 712 | dev_info(&cdev->dev, |
25985edc | 713 | "%s: Unit Check Occurred in " |
b805da74 AR |
714 | "write channel\n", dev->name); |
715 | clear_bit(0, (void *)&p_ch->IO_active); | |
716 | if (p_ch->irb->ecw[0] & 0x80) { | |
4811fcb7 AR |
717 | dev_info(&cdev->dev, |
718 | "%s: Resetting Event " | |
b805da74 AR |
719 | "occurred:\n", dev->name); |
720 | init_timer(&p_ch->timer); | |
721 | p_ch->timer.function = | |
722 | (void *)claw_write_retry; | |
723 | p_ch->timer.data = (unsigned long)p_ch; | |
724 | p_ch->timer.expires = jiffies + 10*HZ; | |
725 | add_timer(&p_ch->timer); | |
4811fcb7 AR |
726 | dev_info(&cdev->dev, |
727 | "%s: write connection " | |
b805da74 AR |
728 | "restarting\n", dev->name); |
729 | } | |
730 | CLAW_DBF_TEXT(4, trace, "rstrtwrt"); | |
731 | return; | |
732 | } | |
733 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) { | |
734 | clear_bit(0, (void *)&p_ch->IO_active); | |
4811fcb7 AR |
735 | dev_info(&cdev->dev, |
736 | "%s: Unit Exception " | |
737 | "occurred in write channel\n", | |
738 | dev->name); | |
b805da74 AR |
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 | } | |
319cb083 | 753 | p_ch_r = (struct chbk *)&privptr->channel[READ_CHANNEL]; |
b805da74 AR |
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: | |
4811fcb7 AR |
760 | dev_warn(&cdev->dev, |
761 | "The CLAW device for %s received an unexpected IRQ\n", | |
762 | dev->name); | |
b805da74 AR |
763 | CLAW_DBF_TEXT(2, trace, "badIRQ"); |
764 | return; | |
1da177e4 LT |
765 | } |
766 | ||
767 | } /* end of claw_irq_handler */ | |
768 | ||
769 | ||
770 | /*-------------------------------------------------------------------* | |
771 | * claw_irq_tasklet * | |
772 | * * | |
773 | *--------------------------------------------------------------------*/ | |
774 | static void | |
775 | claw_irq_tasklet ( unsigned long data ) | |
776 | { | |
777 | struct chbk * p_ch; | |
778 | struct net_device *dev; | |
1da177e4 LT |
779 | |
780 | p_ch = (struct chbk *) data; | |
781 | dev = (struct net_device *)p_ch->ndev; | |
b805da74 | 782 | CLAW_DBF_TEXT(4, trace, "IRQtask"); |
1da177e4 LT |
783 | unpack_read(dev); |
784 | clear_bit(CLAW_BH_ACTIVE, (void *)&p_ch->flag_a); | |
b805da74 | 785 | CLAW_DBF_TEXT(4, trace, "TskletXt"); |
1da177e4 LT |
786 | return; |
787 | } /* end of claw_irq_bh */ | |
788 | ||
789 | /*-------------------------------------------------------------------* | |
790 | * claw_release * | |
791 | * * | |
792 | *--------------------------------------------------------------------*/ | |
793 | static int | |
794 | claw_release(struct net_device *dev) | |
795 | { | |
796 | int rc; | |
797 | int i; | |
798 | unsigned long saveflags; | |
799 | unsigned long parm; | |
800 | struct claw_privbk *privptr; | |
801 | DECLARE_WAITQUEUE(wait, current); | |
802 | struct ccwbk* p_this_ccw; | |
803 | struct ccwbk* p_buf; | |
804 | ||
805 | if (!dev) | |
806 | return 0; | |
6951df34 | 807 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
808 | if (!privptr) |
809 | return 0; | |
b805da74 | 810 | CLAW_DBF_TEXT(4, trace, "release"); |
1da177e4 LT |
811 | privptr->release_pend=1; |
812 | claw_setbit_busy(TB_STOP,dev); | |
813 | for ( i = 1; i >=0 ; i--) { | |
814 | spin_lock_irqsave( | |
815 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
319cb083 | 816 | /* del_timer(&privptr->channel[READ_CHANNEL].timer); */ |
1da177e4 LT |
817 | privptr->channel[i].claw_state = CLAW_STOP; |
818 | privptr->channel[i].IO_active = 0; | |
819 | parm = (unsigned long) &privptr->channel[i]; | |
319cb083 | 820 | if (i == WRITE_CHANNEL) |
1da177e4 | 821 | claw_purge_skb_queue( |
319cb083 | 822 | &privptr->channel[WRITE_CHANNEL].collect_queue); |
1da177e4 LT |
823 | rc = ccw_device_halt (privptr->channel[i].cdev, parm); |
824 | if (privptr->system_validate_comp==0x00) /* never opened? */ | |
825 | init_waitqueue_head(&privptr->channel[i].wait); | |
826 | add_wait_queue(&privptr->channel[i].wait, &wait); | |
827 | set_current_state(TASK_INTERRUPTIBLE); | |
828 | spin_unlock_irqrestore( | |
829 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
830 | schedule(); | |
831 | set_current_state(TASK_RUNNING); | |
832 | remove_wait_queue(&privptr->channel[i].wait, &wait); | |
833 | if (rc != 0) { | |
834 | ccw_check_return_code(privptr->channel[i].cdev, rc); | |
835 | } | |
836 | } | |
837 | if (privptr->pk_skb != NULL) { | |
8e84c801 | 838 | dev_kfree_skb_any(privptr->pk_skb); |
1da177e4 LT |
839 | privptr->pk_skb = NULL; |
840 | } | |
841 | if(privptr->buffs_alloc != 1) { | |
b805da74 | 842 | CLAW_DBF_TEXT(4, trace, "none2fre"); |
1da177e4 LT |
843 | return 0; |
844 | } | |
b805da74 | 845 | CLAW_DBF_TEXT(4, trace, "freebufs"); |
1da177e4 LT |
846 | if (privptr->p_buff_ccw != NULL) { |
847 | free_pages((unsigned long)privptr->p_buff_ccw, | |
848 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
849 | } | |
b805da74 | 850 | CLAW_DBF_TEXT(4, trace, "freeread"); |
1da177e4 LT |
851 | if (privptr->p_env->read_size < PAGE_SIZE) { |
852 | if (privptr->p_buff_read != NULL) { | |
853 | free_pages((unsigned long)privptr->p_buff_read, | |
854 | (int)pages_to_order_of_mag(privptr->p_buff_read_num)); | |
855 | } | |
856 | } | |
857 | else { | |
858 | p_buf=privptr->p_read_active_first; | |
859 | while (p_buf!=NULL) { | |
860 | free_pages((unsigned long)p_buf->p_buffer, | |
861 | (int)pages_to_order_of_mag( | |
862 | privptr->p_buff_pages_perread )); | |
863 | p_buf=p_buf->next; | |
864 | } | |
865 | } | |
b805da74 | 866 | CLAW_DBF_TEXT(4, trace, "freewrit"); |
1da177e4 LT |
867 | if (privptr->p_env->write_size < PAGE_SIZE ) { |
868 | free_pages((unsigned long)privptr->p_buff_write, | |
869 | (int)pages_to_order_of_mag(privptr->p_buff_write_num)); | |
870 | } | |
871 | else { | |
872 | p_buf=privptr->p_write_active_first; | |
873 | while (p_buf!=NULL) { | |
874 | free_pages((unsigned long)p_buf->p_buffer, | |
875 | (int)pages_to_order_of_mag( | |
876 | privptr->p_buff_pages_perwrite )); | |
877 | p_buf=p_buf->next; | |
878 | } | |
879 | } | |
b805da74 | 880 | CLAW_DBF_TEXT(4, trace, "clearptr"); |
1da177e4 LT |
881 | privptr->buffs_alloc = 0; |
882 | privptr->p_buff_ccw=NULL; | |
883 | privptr->p_buff_read=NULL; | |
884 | privptr->p_buff_write=NULL; | |
885 | privptr->system_validate_comp=0; | |
886 | privptr->release_pend=0; | |
887 | /* Remove any writes that were pending and reset all reads */ | |
888 | p_this_ccw=privptr->p_read_active_first; | |
889 | while (p_this_ccw!=NULL) { | |
890 | p_this_ccw->header.length=0xffff; | |
891 | p_this_ccw->header.opcode=0xff; | |
892 | p_this_ccw->header.flag=0x00; | |
893 | p_this_ccw=p_this_ccw->next; | |
894 | } | |
895 | ||
896 | while (privptr->p_write_active_first!=NULL) { | |
897 | p_this_ccw=privptr->p_write_active_first; | |
898 | p_this_ccw->header.flag=CLAW_PENDING; | |
899 | privptr->p_write_active_first=p_this_ccw->next; | |
900 | p_this_ccw->next=privptr->p_write_free_chain; | |
901 | privptr->p_write_free_chain=p_this_ccw; | |
902 | ++privptr->write_free_count; | |
903 | } | |
904 | privptr->p_write_active_last=NULL; | |
905 | privptr->mtc_logical_link = -1; | |
906 | privptr->mtc_skipping = 1; | |
907 | privptr->mtc_offset=0; | |
908 | ||
319cb083 HC |
909 | if (((privptr->channel[READ_CHANNEL].last_dstat | |
910 | privptr->channel[WRITE_CHANNEL].last_dstat) & | |
1da177e4 | 911 | ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) { |
319cb083 | 912 | dev_warn(&privptr->channel[READ_CHANNEL].cdev->dev, |
4811fcb7 AR |
913 | "Deactivating %s completed with incorrect" |
914 | " subchannel status " | |
915 | "(read %02x, write %02x)\n", | |
1da177e4 | 916 | dev->name, |
319cb083 HC |
917 | privptr->channel[READ_CHANNEL].last_dstat, |
918 | privptr->channel[WRITE_CHANNEL].last_dstat); | |
b805da74 | 919 | CLAW_DBF_TEXT(2, trace, "badclose"); |
1da177e4 | 920 | } |
b805da74 | 921 | CLAW_DBF_TEXT(4, trace, "rlsexit"); |
1da177e4 LT |
922 | return 0; |
923 | } /* end of claw_release */ | |
924 | ||
1da177e4 LT |
925 | /*-------------------------------------------------------------------* |
926 | * claw_write_retry * | |
927 | * * | |
928 | *--------------------------------------------------------------------*/ | |
929 | ||
930 | static void | |
931 | claw_write_retry ( struct chbk *p_ch ) | |
932 | { | |
933 | ||
934 | struct net_device *dev=p_ch->ndev; | |
935 | ||
b805da74 | 936 | CLAW_DBF_TEXT(4, trace, "w_retry"); |
1da177e4 | 937 | if (p_ch->claw_state == CLAW_STOP) { |
1da177e4 LT |
938 | return; |
939 | } | |
1da177e4 | 940 | claw_strt_out_IO( dev ); |
b805da74 | 941 | CLAW_DBF_TEXT(4, trace, "rtry_xit"); |
1da177e4 LT |
942 | return; |
943 | } /* end of claw_write_retry */ | |
944 | ||
945 | ||
946 | /*-------------------------------------------------------------------* | |
947 | * claw_write_next * | |
948 | * * | |
949 | *--------------------------------------------------------------------*/ | |
950 | ||
951 | static void | |
952 | claw_write_next ( struct chbk * p_ch ) | |
953 | { | |
954 | ||
955 | struct net_device *dev; | |
956 | struct claw_privbk *privptr=NULL; | |
957 | struct sk_buff *pk_skb; | |
1da177e4 | 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) { | |
38ed18ff | 969 | claw_hw_tx(pk_skb, dev, 1); |
1da177e4 LT |
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 */ | |
b9d2fcee | 1015 | int nump; |
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 ) { | |
4811fcb7 AR |
1079 | privptr->p_read_active_first = p_first; /* set new first */ |
1080 | privptr->p_read_active_last = p_last; /* set new last */ | |
1da177e4 LT |
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 | } | |
4811fcb7 | 1116 | /* chain in new set of blocks */ |
1da177e4 LT |
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: | |
4811fcb7 AR |
1138 | dev_err(&cdev->dev, "The remote channel adapter is not" |
1139 | " available\n"); | |
b805da74 AR |
1140 | break; |
1141 | case -EINVAL: | |
4811fcb7 AR |
1142 | dev_err(&cdev->dev, |
1143 | "The status of the remote channel adapter" | |
1144 | " is not valid\n"); | |
b805da74 AR |
1145 | break; |
1146 | default: | |
4811fcb7 AR |
1147 | dev_err(&cdev->dev, "The common device layer" |
1148 | " returned error code %d\n", | |
1149 | return_code); | |
b805da74 AR |
1150 | } |
1151 | } | |
1152 | CLAW_DBF_TEXT(4, trace, "ccwret"); | |
1da177e4 LT |
1153 | } /* end of ccw_check_return_code */ |
1154 | ||
1155 | /*-------------------------------------------------------------------* | |
1156 | * ccw_check_unit_check * | |
1157 | *--------------------------------------------------------------------*/ | |
1158 | ||
4d284cac | 1159 | static void |
1da177e4 LT |
1160 | ccw_check_unit_check(struct chbk * p_ch, unsigned char sense ) |
1161 | { | |
b805da74 | 1162 | struct net_device *ndev = p_ch->ndev; |
4811fcb7 | 1163 | struct device *dev = &p_ch->cdev->dev; |
1da177e4 | 1164 | |
b805da74 | 1165 | CLAW_DBF_TEXT(4, trace, "unitchek"); |
4811fcb7 AR |
1166 | dev_warn(dev, "The communication peer of %s disconnected\n", |
1167 | ndev->name); | |
1da177e4 | 1168 | |
b9d2fcee AR |
1169 | if (sense & 0x40) { |
1170 | if (sense & 0x01) { | |
4811fcb7 AR |
1171 | dev_warn(dev, "The remote channel adapter for" |
1172 | " %s has been reset\n", | |
1173 | ndev->name); | |
b9d2fcee AR |
1174 | } |
1175 | } else if (sense & 0x20) { | |
1176 | if (sense & 0x04) { | |
4811fcb7 AR |
1177 | dev_warn(dev, "A data streaming timeout occurred" |
1178 | " for %s\n", | |
1179 | ndev->name); | |
b9d2fcee | 1180 | } else if (sense & 0x10) { |
4811fcb7 AR |
1181 | dev_warn(dev, "The remote channel adapter for %s" |
1182 | " is faulty\n", | |
1183 | ndev->name); | |
b9d2fcee AR |
1184 | } else { |
1185 | dev_warn(dev, "A data transfer parity error occurred" | |
4811fcb7 AR |
1186 | " for %s\n", |
1187 | ndev->name); | |
b9d2fcee AR |
1188 | } |
1189 | } else if (sense & 0x10) { | |
1190 | dev_warn(dev, "A read data parity error occurred" | |
1191 | " for %s\n", | |
1192 | ndev->name); | |
1193 | } | |
1da177e4 | 1194 | |
1da177e4 LT |
1195 | } /* end of ccw_check_unit_check */ |
1196 | ||
1da177e4 LT |
1197 | /*-------------------------------------------------------------------* |
1198 | * find_link * | |
1199 | *--------------------------------------------------------------------*/ | |
1200 | static int | |
1201 | find_link(struct net_device *dev, char *host_name, char *ws_name ) | |
1202 | { | |
1203 | struct claw_privbk *privptr; | |
1204 | struct claw_env *p_env; | |
1205 | int rc=0; | |
1206 | ||
b805da74 | 1207 | CLAW_DBF_TEXT(2, setup, "findlink"); |
6951df34 | 1208 | privptr = dev->ml_priv; |
1da177e4 LT |
1209 | p_env=privptr->p_env; |
1210 | switch (p_env->packing) | |
1211 | { | |
1212 | case PACKING_ASK: | |
1213 | if ((memcmp(WS_APPL_NAME_PACKED, host_name, 8)!=0) || | |
1214 | (memcmp(WS_APPL_NAME_PACKED, ws_name, 8)!=0 )) | |
1215 | rc = EINVAL; | |
1216 | break; | |
1217 | case DO_PACKED: | |
1218 | case PACK_SEND: | |
1219 | if ((memcmp(WS_APPL_NAME_IP_NAME, host_name, 8)!=0) || | |
1220 | (memcmp(WS_APPL_NAME_IP_NAME, ws_name, 8)!=0 )) | |
1221 | rc = EINVAL; | |
1222 | break; | |
1223 | default: | |
1224 | if ((memcmp(HOST_APPL_NAME, host_name, 8)!=0) || | |
1225 | (memcmp(p_env->api_type , ws_name, 8)!=0)) | |
1226 | rc = EINVAL; | |
1227 | break; | |
1228 | } | |
1229 | ||
b9d2fcee | 1230 | return rc; |
1da177e4 LT |
1231 | } /* end of find_link */ |
1232 | ||
1233 | /*-------------------------------------------------------------------* | |
1234 | * claw_hw_tx * | |
1235 | * * | |
1236 | * * | |
1237 | *-------------------------------------------------------------------*/ | |
1238 | ||
1239 | static int | |
1240 | claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid) | |
1241 | { | |
1242 | int rc=0; | |
1243 | struct claw_privbk *privptr; | |
1244 | struct ccwbk *p_this_ccw; | |
1245 | struct ccwbk *p_first_ccw; | |
1246 | struct ccwbk *p_last_ccw; | |
1247 | __u32 numBuffers; | |
1248 | signed long len_of_data; | |
1249 | unsigned long bytesInThisBuffer; | |
1250 | unsigned char *pDataAddress; | |
1251 | struct endccw *pEnd; | |
1252 | struct ccw1 tempCCW; | |
1da177e4 | 1253 | struct claw_env *p_env; |
1da177e4 LT |
1254 | struct clawph *pk_head; |
1255 | struct chbk *ch; | |
b805da74 AR |
1256 | |
1257 | CLAW_DBF_TEXT(4, trace, "hw_tx"); | |
6951df34 | 1258 | privptr = (struct claw_privbk *)(dev->ml_priv); |
1da177e4 | 1259 | p_env =privptr->p_env; |
1da177e4 LT |
1260 | claw_free_wrt_buf(dev); /* Clean up free chain if posible */ |
1261 | /* scan the write queue to free any completed write packets */ | |
1262 | p_first_ccw=NULL; | |
1263 | p_last_ccw=NULL; | |
1264 | if ((p_env->packing >= PACK_SEND) && | |
1265 | (skb->cb[1] != 'P')) { | |
1266 | skb_push(skb,sizeof(struct clawph)); | |
1267 | pk_head=(struct clawph *)skb->data; | |
1268 | pk_head->len=skb->len-sizeof(struct clawph); | |
1269 | if (pk_head->len%4) { | |
1270 | pk_head->len+= 4-(pk_head->len%4); | |
1271 | skb_pad(skb,4-(pk_head->len%4)); | |
1272 | skb_put(skb,4-(pk_head->len%4)); | |
1273 | } | |
1274 | if (p_env->packing == DO_PACKED) | |
1275 | pk_head->link_num = linkid; | |
1276 | else | |
1277 | pk_head->link_num = 0; | |
1278 | pk_head->flag = 0x00; | |
1279 | skb_pad(skb,4); | |
1280 | skb->cb[1] = 'P'; | |
1281 | } | |
1282 | if (linkid == 0) { | |
1283 | if (claw_check_busy(dev)) { | |
1284 | if (privptr->write_free_count!=0) { | |
1285 | claw_clear_busy(dev); | |
1286 | } | |
1287 | else { | |
1288 | claw_strt_out_IO(dev ); | |
1289 | claw_free_wrt_buf( dev ); | |
1290 | if (privptr->write_free_count==0) { | |
319cb083 | 1291 | ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
1292 | atomic_inc(&skb->users); |
1293 | skb_queue_tail(&ch->collect_queue, skb); | |
1294 | goto Done; | |
1295 | } | |
1296 | else { | |
1297 | claw_clear_busy(dev); | |
1298 | } | |
1299 | } | |
1300 | } | |
1301 | /* tx lock */ | |
1302 | if (claw_test_and_setbit_busy(TB_TX,dev)) { /* set to busy */ | |
319cb083 | 1303 | ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
1304 | atomic_inc(&skb->users); |
1305 | skb_queue_tail(&ch->collect_queue, skb); | |
1306 | claw_strt_out_IO(dev ); | |
1307 | rc=-EBUSY; | |
1308 | goto Done2; | |
1309 | } | |
1310 | } | |
1311 | /* See how many write buffers are required to hold this data */ | |
f5154fbf | 1312 | numBuffers = DIV_ROUND_UP(skb->len, privptr->p_env->write_size); |
1da177e4 LT |
1313 | |
1314 | /* If that number of buffers isn't available, give up for now */ | |
1315 | if (privptr->write_free_count < numBuffers || | |
1316 | privptr->p_write_free_chain == NULL ) { | |
1317 | ||
1318 | claw_setbit_busy(TB_NOBUFFER,dev); | |
319cb083 | 1319 | ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
1320 | atomic_inc(&skb->users); |
1321 | skb_queue_tail(&ch->collect_queue, skb); | |
b805da74 | 1322 | CLAW_DBF_TEXT(2, trace, "clawbusy"); |
1da177e4 LT |
1323 | goto Done2; |
1324 | } | |
1325 | pDataAddress=skb->data; | |
1326 | len_of_data=skb->len; | |
1327 | ||
1328 | while (len_of_data > 0) { | |
1da177e4 LT |
1329 | p_this_ccw=privptr->p_write_free_chain; /* get a block */ |
1330 | if (p_this_ccw == NULL) { /* lost the race */ | |
319cb083 | 1331 | ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
1332 | atomic_inc(&skb->users); |
1333 | skb_queue_tail(&ch->collect_queue, skb); | |
1334 | goto Done2; | |
1335 | } | |
1336 | privptr->p_write_free_chain=p_this_ccw->next; | |
1337 | p_this_ccw->next=NULL; | |
1338 | --privptr->write_free_count; /* -1 */ | |
b9d2fcee AR |
1339 | if (len_of_data >= privptr->p_env->write_size) |
1340 | bytesInThisBuffer = privptr->p_env->write_size; | |
1341 | else | |
1342 | bytesInThisBuffer = len_of_data; | |
1da177e4 LT |
1343 | memcpy( p_this_ccw->p_buffer,pDataAddress, bytesInThisBuffer); |
1344 | len_of_data-=bytesInThisBuffer; | |
1345 | pDataAddress+=(unsigned long)bytesInThisBuffer; | |
1346 | /* setup write CCW */ | |
1347 | p_this_ccw->write.cmd_code = (linkid * 8) +1; | |
1348 | if (len_of_data>0) { | |
1349 | p_this_ccw->write.cmd_code+=MORE_to_COME_FLAG; | |
1350 | } | |
1351 | p_this_ccw->write.count=bytesInThisBuffer; | |
1352 | /* now add to end of this chain */ | |
1353 | if (p_first_ccw==NULL) { | |
1354 | p_first_ccw=p_this_ccw; | |
1355 | } | |
1356 | if (p_last_ccw!=NULL) { | |
1357 | p_last_ccw->next=p_this_ccw; | |
1358 | /* set up TIC ccws */ | |
1359 | p_last_ccw->w_TIC_1.cda= | |
1360 | (__u32)__pa(&p_this_ccw->write); | |
1361 | } | |
1362 | p_last_ccw=p_this_ccw; /* save new last block */ | |
1da177e4 LT |
1363 | } |
1364 | ||
1365 | /* FirstCCW and LastCCW now contain a new set of write channel | |
1366 | * programs to append to the running channel program | |
1367 | */ | |
1368 | ||
1369 | if (p_first_ccw!=NULL) { | |
4811fcb7 | 1370 | /* setup ending ccw sequence for this segment */ |
1da177e4 LT |
1371 | pEnd=privptr->p_end_ccw; |
1372 | if (pEnd->write1) { | |
1373 | pEnd->write1=0x00; /* second end ccw is now active */ | |
1374 | /* set up Tic CCWs */ | |
1375 | p_last_ccw->w_TIC_1.cda= | |
1376 | (__u32)__pa(&pEnd->write2_nop1); | |
1377 | pEnd->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1378 | pEnd->write2_nop2.flags = | |
1379 | CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1380 | pEnd->write2_nop2.cda=0; | |
1381 | pEnd->write2_nop2.count=1; | |
1382 | } | |
1383 | else { /* end of if (pEnd->write1)*/ | |
1384 | pEnd->write1=0x01; /* first end ccw is now active */ | |
1385 | /* set up Tic CCWs */ | |
1386 | p_last_ccw->w_TIC_1.cda= | |
1387 | (__u32)__pa(&pEnd->write1_nop1); | |
1388 | pEnd->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1389 | pEnd->write1_nop2.flags = | |
1390 | CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1391 | pEnd->write1_nop2.cda=0; | |
1392 | pEnd->write1_nop2.count=1; | |
1393 | } /* end if if (pEnd->write1) */ | |
1394 | ||
1da177e4 LT |
1395 | if (privptr->p_write_active_first==NULL ) { |
1396 | privptr->p_write_active_first=p_first_ccw; | |
1397 | privptr->p_write_active_last=p_last_ccw; | |
1398 | } | |
1399 | else { | |
1da177e4 LT |
1400 | /* set up Tic CCWs */ |
1401 | ||
1402 | tempCCW.cda=(__u32)__pa(&p_first_ccw->write); | |
1403 | tempCCW.count=0; | |
1404 | tempCCW.flags=0; | |
1405 | tempCCW.cmd_code=CCW_CLAW_CMD_TIC; | |
1406 | ||
1407 | if (pEnd->write1) { | |
1408 | ||
1409 | /* | |
1410 | * first set of ending CCW's is chained to the new write | |
1411 | * chain, so the second set is chained to the active chain | |
1412 | * Therefore modify the second set to point the new write chain. | |
1413 | * make sure we update the CCW atomically | |
1414 | * so channel does not fetch it when it's only half done | |
1415 | */ | |
1416 | memcpy( &pEnd->write2_nop2, &tempCCW , | |
1417 | sizeof(struct ccw1)); | |
1418 | privptr->p_write_active_last->w_TIC_1.cda= | |
1419 | (__u32)__pa(&p_first_ccw->write); | |
1420 | } | |
1421 | else { | |
1422 | ||
1423 | /*make sure we update the CCW atomically | |
1424 | *so channel does not fetch it when it's only half done | |
1425 | */ | |
1426 | memcpy(&pEnd->write1_nop2, &tempCCW , | |
1427 | sizeof(struct ccw1)); | |
1428 | privptr->p_write_active_last->w_TIC_1.cda= | |
1429 | (__u32)__pa(&p_first_ccw->write); | |
1430 | ||
1431 | } /* end if if (pEnd->write1) */ | |
1432 | ||
1433 | privptr->p_write_active_last->next=p_first_ccw; | |
1434 | privptr->p_write_active_last=p_last_ccw; | |
1435 | } | |
1436 | ||
1437 | } /* endif (p_first_ccw!=NULL) */ | |
8e84c801 | 1438 | dev_kfree_skb_any(skb); |
1da177e4 LT |
1439 | claw_strt_out_IO(dev ); |
1440 | /* if write free count is zero , set NOBUFFER */ | |
1da177e4 LT |
1441 | if (privptr->write_free_count==0) { |
1442 | claw_setbit_busy(TB_NOBUFFER,dev); | |
1443 | } | |
1444 | Done2: | |
1445 | claw_clearbit_busy(TB_TX,dev); | |
1446 | Done: | |
1da177e4 LT |
1447 | return(rc); |
1448 | } /* end of claw_hw_tx */ | |
1449 | ||
1450 | /*-------------------------------------------------------------------* | |
1451 | * * | |
1452 | * init_ccw_bk * | |
1453 | * * | |
1454 | *--------------------------------------------------------------------*/ | |
1455 | ||
1456 | static int | |
1457 | init_ccw_bk(struct net_device *dev) | |
1458 | { | |
1459 | ||
1460 | __u32 ccw_blocks_required; | |
1461 | __u32 ccw_blocks_perpage; | |
1462 | __u32 ccw_pages_required; | |
1463 | __u32 claw_reads_perpage=1; | |
1464 | __u32 claw_read_pages; | |
1465 | __u32 claw_writes_perpage=1; | |
1466 | __u32 claw_write_pages; | |
1467 | void *p_buff=NULL; | |
1468 | struct ccwbk*p_free_chain; | |
1469 | struct ccwbk*p_buf; | |
1470 | struct ccwbk*p_last_CCWB; | |
1471 | struct ccwbk*p_first_CCWB; | |
1472 | struct endccw *p_endccw=NULL; | |
6951df34 PT |
1473 | addr_t real_address; |
1474 | struct claw_privbk *privptr = dev->ml_priv; | |
1da177e4 LT |
1475 | struct clawh *pClawH=NULL; |
1476 | addr_t real_TIC_address; | |
1477 | int i,j; | |
b805da74 | 1478 | CLAW_DBF_TEXT(4, trace, "init_ccw"); |
1da177e4 LT |
1479 | |
1480 | /* initialize statistics field */ | |
1481 | privptr->active_link_ID=0; | |
1482 | /* initialize ccwbk pointers */ | |
1483 | privptr->p_write_free_chain=NULL; /* pointer to free ccw chain*/ | |
1484 | privptr->p_write_active_first=NULL; /* pointer to the first write ccw*/ | |
1485 | privptr->p_write_active_last=NULL; /* pointer to the last write ccw*/ | |
1486 | privptr->p_read_active_first=NULL; /* pointer to the first read ccw*/ | |
1487 | privptr->p_read_active_last=NULL; /* pointer to the last read ccw */ | |
1488 | privptr->p_end_ccw=NULL; /* pointer to ending ccw */ | |
1489 | privptr->p_claw_signal_blk=NULL; /* pointer to signal block */ | |
1490 | privptr->buffs_alloc = 0; | |
1491 | memset(&privptr->end_ccw, 0x00, sizeof(struct endccw)); | |
1492 | memset(&privptr->ctl_bk, 0x00, sizeof(struct clawctl)); | |
1493 | /* initialize free write ccwbk counter */ | |
1494 | privptr->write_free_count=0; /* number of free bufs on write chain */ | |
1495 | p_last_CCWB = NULL; | |
1496 | p_first_CCWB= NULL; | |
1497 | /* | |
1498 | * We need 1 CCW block for each read buffer, 1 for each | |
1499 | * write buffer, plus 1 for ClawSignalBlock | |
1500 | */ | |
1501 | ccw_blocks_required = | |
1502 | privptr->p_env->read_buffers+privptr->p_env->write_buffers+1; | |
1da177e4 LT |
1503 | /* |
1504 | * compute number of CCW blocks that will fit in a page | |
1505 | */ | |
1506 | ccw_blocks_perpage= PAGE_SIZE / CCWBK_SIZE; | |
1507 | ccw_pages_required= | |
f5154fbf | 1508 | DIV_ROUND_UP(ccw_blocks_required, ccw_blocks_perpage); |
1da177e4 | 1509 | |
1da177e4 LT |
1510 | /* |
1511 | * read and write sizes are set by 2 constants in claw.h | |
1512 | * 4k and 32k. Unpacked values other than 4k are not going to | |
1513 | * provide good performance. With packing buffers support 32k | |
1514 | * buffers are used. | |
1515 | */ | |
f5154fbf JL |
1516 | if (privptr->p_env->read_size < PAGE_SIZE) { |
1517 | claw_reads_perpage = PAGE_SIZE / privptr->p_env->read_size; | |
1518 | claw_read_pages = DIV_ROUND_UP(privptr->p_env->read_buffers, | |
1519 | claw_reads_perpage); | |
1da177e4 LT |
1520 | } |
1521 | else { /* > or equal */ | |
f5154fbf JL |
1522 | privptr->p_buff_pages_perread = |
1523 | DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE); | |
1524 | claw_read_pages = privptr->p_env->read_buffers * | |
1525 | privptr->p_buff_pages_perread; | |
1da177e4 LT |
1526 | } |
1527 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
f5154fbf JL |
1528 | claw_writes_perpage = |
1529 | PAGE_SIZE / privptr->p_env->write_size; | |
1530 | claw_write_pages = DIV_ROUND_UP(privptr->p_env->write_buffers, | |
1531 | claw_writes_perpage); | |
1da177e4 LT |
1532 | |
1533 | } | |
1534 | else { /* > or equal */ | |
f5154fbf JL |
1535 | privptr->p_buff_pages_perwrite = |
1536 | DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE); | |
1537 | claw_write_pages = privptr->p_env->write_buffers * | |
1538 | privptr->p_buff_pages_perwrite; | |
1da177e4 | 1539 | } |
1da177e4 LT |
1540 | /* |
1541 | * allocate ccw_pages_required | |
1542 | */ | |
1543 | if (privptr->p_buff_ccw==NULL) { | |
1544 | privptr->p_buff_ccw= | |
1545 | (void *)__get_free_pages(__GFP_DMA, | |
1546 | (int)pages_to_order_of_mag(ccw_pages_required )); | |
1547 | if (privptr->p_buff_ccw==NULL) { | |
1da177e4 LT |
1548 | return -ENOMEM; |
1549 | } | |
1550 | privptr->p_buff_ccw_num=ccw_pages_required; | |
1551 | } | |
1552 | memset(privptr->p_buff_ccw, 0x00, | |
1553 | privptr->p_buff_ccw_num * PAGE_SIZE); | |
1554 | ||
1555 | /* | |
1556 | * obtain ending ccw block address | |
1557 | * | |
1558 | */ | |
1559 | privptr->p_end_ccw = (struct endccw *)&privptr->end_ccw; | |
1560 | real_address = (__u32)__pa(privptr->p_end_ccw); | |
1561 | /* Initialize ending CCW block */ | |
1da177e4 LT |
1562 | p_endccw=privptr->p_end_ccw; |
1563 | p_endccw->real=real_address; | |
1564 | p_endccw->write1=0x00; | |
1565 | p_endccw->read1=0x00; | |
1566 | ||
1567 | /* write1_nop1 */ | |
1568 | p_endccw->write1_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1569 | p_endccw->write1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1570 | p_endccw->write1_nop1.count = 1; | |
1571 | p_endccw->write1_nop1.cda = 0; | |
1572 | ||
1573 | /* write1_nop2 */ | |
1574 | p_endccw->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1575 | p_endccw->write1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1576 | p_endccw->write1_nop2.count = 1; | |
1577 | p_endccw->write1_nop2.cda = 0; | |
1578 | ||
1579 | /* write2_nop1 */ | |
1580 | p_endccw->write2_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1581 | p_endccw->write2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1582 | p_endccw->write2_nop1.count = 1; | |
1583 | p_endccw->write2_nop1.cda = 0; | |
1584 | ||
1585 | /* write2_nop2 */ | |
1586 | p_endccw->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1587 | p_endccw->write2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1588 | p_endccw->write2_nop2.count = 1; | |
1589 | p_endccw->write2_nop2.cda = 0; | |
1590 | ||
1591 | /* read1_nop1 */ | |
1592 | p_endccw->read1_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1593 | p_endccw->read1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1594 | p_endccw->read1_nop1.count = 1; | |
1595 | p_endccw->read1_nop1.cda = 0; | |
1596 | ||
1597 | /* read1_nop2 */ | |
1598 | p_endccw->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1599 | p_endccw->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1600 | p_endccw->read1_nop2.count = 1; | |
1601 | p_endccw->read1_nop2.cda = 0; | |
1602 | ||
1603 | /* read2_nop1 */ | |
1604 | p_endccw->read2_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1605 | p_endccw->read2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1606 | p_endccw->read2_nop1.count = 1; | |
1607 | p_endccw->read2_nop1.cda = 0; | |
1608 | ||
1609 | /* read2_nop2 */ | |
1610 | p_endccw->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1611 | p_endccw->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1612 | p_endccw->read2_nop2.count = 1; | |
1613 | p_endccw->read2_nop2.cda = 0; | |
1614 | ||
1da177e4 LT |
1615 | /* |
1616 | * Build a chain of CCWs | |
1617 | * | |
1618 | */ | |
1da177e4 LT |
1619 | p_buff=privptr->p_buff_ccw; |
1620 | ||
1621 | p_free_chain=NULL; | |
1622 | for (i=0 ; i < ccw_pages_required; i++ ) { | |
1623 | real_address = (__u32)__pa(p_buff); | |
1624 | p_buf=p_buff; | |
1625 | for (j=0 ; j < ccw_blocks_perpage ; j++) { | |
1626 | p_buf->next = p_free_chain; | |
1627 | p_free_chain = p_buf; | |
1628 | p_buf->real=(__u32)__pa(p_buf); | |
1629 | ++p_buf; | |
1630 | } | |
1631 | p_buff+=PAGE_SIZE; | |
1632 | } | |
1da177e4 LT |
1633 | /* |
1634 | * Initialize ClawSignalBlock | |
1635 | * | |
1636 | */ | |
1da177e4 LT |
1637 | if (privptr->p_claw_signal_blk==NULL) { |
1638 | privptr->p_claw_signal_blk=p_free_chain; | |
1639 | p_free_chain=p_free_chain->next; | |
1640 | pClawH=(struct clawh *)privptr->p_claw_signal_blk; | |
1641 | pClawH->length=0xffff; | |
1642 | pClawH->opcode=0xff; | |
1643 | pClawH->flag=CLAW_BUSY; | |
1644 | } | |
1da177e4 LT |
1645 | |
1646 | /* | |
1647 | * allocate write_pages_required and add to free chain | |
1648 | */ | |
1649 | if (privptr->p_buff_write==NULL) { | |
1650 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
1651 | privptr->p_buff_write= | |
1652 | (void *)__get_free_pages(__GFP_DMA, | |
1653 | (int)pages_to_order_of_mag(claw_write_pages )); | |
1654 | if (privptr->p_buff_write==NULL) { | |
1da177e4 | 1655 | privptr->p_buff_ccw=NULL; |
1da177e4 LT |
1656 | return -ENOMEM; |
1657 | } | |
1658 | /* | |
1659 | * Build CLAW write free chain | |
1660 | * | |
1661 | */ | |
1662 | ||
1663 | memset(privptr->p_buff_write, 0x00, | |
1664 | ccw_pages_required * PAGE_SIZE); | |
1da177e4 LT |
1665 | privptr->p_write_free_chain=NULL; |
1666 | ||
1667 | p_buff=privptr->p_buff_write; | |
1668 | ||
1669 | for (i=0 ; i< privptr->p_env->write_buffers ; i++) { | |
1670 | p_buf = p_free_chain; /* get a CCW */ | |
1671 | p_free_chain = p_buf->next; | |
1672 | p_buf->next =privptr->p_write_free_chain; | |
1673 | privptr->p_write_free_chain = p_buf; | |
1674 | p_buf-> p_buffer = (struct clawbuf *)p_buff; | |
1675 | p_buf-> write.cda = (__u32)__pa(p_buff); | |
1676 | p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1677 | p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1678 | p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1679 | p_buf-> w_read_FF.count = 1; | |
1680 | p_buf-> w_read_FF.cda = | |
1681 | (__u32)__pa(&p_buf-> header.flag); | |
1682 | p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1683 | p_buf-> w_TIC_1.flags = 0; | |
1684 | p_buf-> w_TIC_1.count = 0; | |
1685 | ||
4811fcb7 AR |
1686 | if (((unsigned long)p_buff + |
1687 | privptr->p_env->write_size) >= | |
1da177e4 | 1688 | ((unsigned long)(p_buff+2* |
4811fcb7 AR |
1689 | (privptr->p_env->write_size) - 1) & PAGE_MASK)) { |
1690 | p_buff = p_buff+privptr->p_env->write_size; | |
1da177e4 LT |
1691 | } |
1692 | } | |
1693 | } | |
1694 | else /* Buffers are => PAGE_SIZE. 1 buff per get_free_pages */ | |
1695 | { | |
1696 | privptr->p_write_free_chain=NULL; | |
1697 | for (i = 0; i< privptr->p_env->write_buffers ; i++) { | |
1698 | p_buff=(void *)__get_free_pages(__GFP_DMA, | |
1699 | (int)pages_to_order_of_mag( | |
1700 | privptr->p_buff_pages_perwrite) ); | |
1da177e4 | 1701 | if (p_buff==NULL) { |
1da177e4 LT |
1702 | free_pages((unsigned long)privptr->p_buff_ccw, |
1703 | (int)pages_to_order_of_mag( | |
1704 | privptr->p_buff_ccw_num)); | |
1705 | privptr->p_buff_ccw=NULL; | |
1706 | p_buf=privptr->p_buff_write; | |
1707 | while (p_buf!=NULL) { | |
1708 | free_pages((unsigned long) | |
1709 | p_buf->p_buffer, | |
1710 | (int)pages_to_order_of_mag( | |
1711 | privptr->p_buff_pages_perwrite)); | |
1712 | p_buf=p_buf->next; | |
1713 | } | |
1da177e4 LT |
1714 | return -ENOMEM; |
1715 | } /* Error on get_pages */ | |
1716 | memset(p_buff, 0x00, privptr->p_env->write_size ); | |
1717 | p_buf = p_free_chain; | |
1718 | p_free_chain = p_buf->next; | |
1719 | p_buf->next = privptr->p_write_free_chain; | |
1720 | privptr->p_write_free_chain = p_buf; | |
1721 | privptr->p_buff_write = p_buf; | |
1722 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1723 | p_buf-> write.cda = (__u32)__pa(p_buff); | |
1724 | p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1725 | p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1726 | p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1727 | p_buf-> w_read_FF.count = 1; | |
1728 | p_buf-> w_read_FF.cda = | |
1729 | (__u32)__pa(&p_buf-> header.flag); | |
1730 | p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1731 | p_buf-> w_TIC_1.flags = 0; | |
1732 | p_buf-> w_TIC_1.count = 0; | |
1733 | } /* for all write_buffers */ | |
1734 | ||
1735 | } /* else buffers are PAGE_SIZE or bigger */ | |
1736 | ||
1737 | } | |
1738 | privptr->p_buff_write_num=claw_write_pages; | |
1739 | privptr->write_free_count=privptr->p_env->write_buffers; | |
1740 | ||
1741 | ||
1da177e4 LT |
1742 | /* |
1743 | * allocate read_pages_required and chain to free chain | |
1744 | */ | |
1745 | if (privptr->p_buff_read==NULL) { | |
1746 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
1747 | privptr->p_buff_read= | |
1748 | (void *)__get_free_pages(__GFP_DMA, | |
1749 | (int)pages_to_order_of_mag(claw_read_pages) ); | |
1750 | if (privptr->p_buff_read==NULL) { | |
1da177e4 LT |
1751 | free_pages((unsigned long)privptr->p_buff_ccw, |
1752 | (int)pages_to_order_of_mag( | |
1753 | privptr->p_buff_ccw_num)); | |
1754 | /* free the write pages size is < page size */ | |
1755 | free_pages((unsigned long)privptr->p_buff_write, | |
1756 | (int)pages_to_order_of_mag( | |
1757 | privptr->p_buff_write_num)); | |
1758 | privptr->p_buff_ccw=NULL; | |
1759 | privptr->p_buff_write=NULL; | |
1da177e4 LT |
1760 | return -ENOMEM; |
1761 | } | |
1762 | memset(privptr->p_buff_read, 0x00, claw_read_pages * PAGE_SIZE); | |
1763 | privptr->p_buff_read_num=claw_read_pages; | |
1764 | /* | |
1765 | * Build CLAW read free chain | |
1766 | * | |
1767 | */ | |
1da177e4 LT |
1768 | p_buff=privptr->p_buff_read; |
1769 | for (i=0 ; i< privptr->p_env->read_buffers ; i++) { | |
1770 | p_buf = p_free_chain; | |
1771 | p_free_chain = p_buf->next; | |
1772 | ||
1773 | if (p_last_CCWB==NULL) { | |
1774 | p_buf->next=NULL; | |
1775 | real_TIC_address=0; | |
1776 | p_last_CCWB=p_buf; | |
1777 | } | |
1778 | else { | |
1779 | p_buf->next=p_first_CCWB; | |
1780 | real_TIC_address= | |
1781 | (__u32)__pa(&p_first_CCWB -> read ); | |
1782 | } | |
1783 | ||
1784 | p_first_CCWB=p_buf; | |
1785 | ||
1786 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1787 | /* initialize read command */ | |
1788 | p_buf-> read.cmd_code = CCW_CLAW_CMD_READ; | |
1789 | p_buf-> read.cda = (__u32)__pa(p_buff); | |
1790 | p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1791 | p_buf-> read.count = privptr->p_env->read_size; | |
1792 | ||
1793 | /* initialize read_h command */ | |
1794 | p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER; | |
1795 | p_buf-> read_h.cda = | |
1796 | (__u32)__pa(&(p_buf->header)); | |
1797 | p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1798 | p_buf-> read_h.count = sizeof(struct clawh); | |
1799 | ||
1800 | /* initialize Signal command */ | |
1801 | p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD; | |
1802 | p_buf-> signal.cda = | |
1803 | (__u32)__pa(&(pClawH->flag)); | |
1804 | p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1805 | p_buf-> signal.count = 1; | |
1806 | ||
1807 | /* initialize r_TIC_1 command */ | |
1808 | p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1809 | p_buf-> r_TIC_1.cda = (__u32)real_TIC_address; | |
1810 | p_buf-> r_TIC_1.flags = 0; | |
1811 | p_buf-> r_TIC_1.count = 0; | |
1812 | ||
1813 | /* initialize r_read_FF command */ | |
1814 | p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1815 | p_buf-> r_read_FF.cda = | |
1816 | (__u32)__pa(&(pClawH->flag)); | |
1817 | p_buf-> r_read_FF.flags = | |
1818 | CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI; | |
1819 | p_buf-> r_read_FF.count = 1; | |
1820 | ||
1821 | /* initialize r_TIC_2 */ | |
1822 | memcpy(&p_buf->r_TIC_2, | |
1823 | &p_buf->r_TIC_1, sizeof(struct ccw1)); | |
1824 | ||
1825 | /* initialize Header */ | |
1826 | p_buf->header.length=0xffff; | |
1827 | p_buf->header.opcode=0xff; | |
1828 | p_buf->header.flag=CLAW_PENDING; | |
1829 | ||
4811fcb7 AR |
1830 | if (((unsigned long)p_buff+privptr->p_env->read_size) >= |
1831 | ((unsigned long)(p_buff+2*(privptr->p_env->read_size) | |
1832 | -1) | |
1833 | & PAGE_MASK)) { | |
1da177e4 LT |
1834 | p_buff= p_buff+privptr->p_env->read_size; |
1835 | } | |
1836 | else { | |
1837 | p_buff= | |
1838 | (void *)((unsigned long) | |
4811fcb7 | 1839 | (p_buff+2*(privptr->p_env->read_size)-1) |
1da177e4 LT |
1840 | & PAGE_MASK) ; |
1841 | } | |
1842 | } /* for read_buffers */ | |
1843 | } /* read_size < PAGE_SIZE */ | |
1844 | else { /* read Size >= PAGE_SIZE */ | |
1da177e4 LT |
1845 | for (i=0 ; i< privptr->p_env->read_buffers ; i++) { |
1846 | p_buff = (void *)__get_free_pages(__GFP_DMA, | |
4811fcb7 AR |
1847 | (int)pages_to_order_of_mag( |
1848 | privptr->p_buff_pages_perread)); | |
1da177e4 | 1849 | if (p_buff==NULL) { |
1da177e4 | 1850 | free_pages((unsigned long)privptr->p_buff_ccw, |
4811fcb7 AR |
1851 | (int)pages_to_order_of_mag(privptr-> |
1852 | p_buff_ccw_num)); | |
1da177e4 LT |
1853 | /* free the write pages */ |
1854 | p_buf=privptr->p_buff_write; | |
1855 | while (p_buf!=NULL) { | |
4811fcb7 AR |
1856 | free_pages( |
1857 | (unsigned long)p_buf->p_buffer, | |
1858 | (int)pages_to_order_of_mag( | |
1859 | privptr->p_buff_pages_perwrite)); | |
1da177e4 LT |
1860 | p_buf=p_buf->next; |
1861 | } | |
1862 | /* free any read pages already alloc */ | |
1863 | p_buf=privptr->p_buff_read; | |
1864 | while (p_buf!=NULL) { | |
4811fcb7 AR |
1865 | free_pages( |
1866 | (unsigned long)p_buf->p_buffer, | |
1867 | (int)pages_to_order_of_mag( | |
1868 | privptr->p_buff_pages_perread)); | |
1da177e4 LT |
1869 | p_buf=p_buf->next; |
1870 | } | |
1871 | privptr->p_buff_ccw=NULL; | |
1872 | privptr->p_buff_write=NULL; | |
1da177e4 LT |
1873 | return -ENOMEM; |
1874 | } | |
1875 | memset(p_buff, 0x00, privptr->p_env->read_size); | |
1876 | p_buf = p_free_chain; | |
1877 | privptr->p_buff_read = p_buf; | |
1878 | p_free_chain = p_buf->next; | |
1879 | ||
1880 | if (p_last_CCWB==NULL) { | |
1881 | p_buf->next=NULL; | |
1882 | real_TIC_address=0; | |
1883 | p_last_CCWB=p_buf; | |
1884 | } | |
1885 | else { | |
1886 | p_buf->next=p_first_CCWB; | |
1887 | real_TIC_address= | |
1888 | (addr_t)__pa( | |
1889 | &p_first_CCWB -> read ); | |
1890 | } | |
1891 | ||
1892 | p_first_CCWB=p_buf; | |
1893 | /* save buff address */ | |
1894 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1895 | /* initialize read command */ | |
1896 | p_buf-> read.cmd_code = CCW_CLAW_CMD_READ; | |
1897 | p_buf-> read.cda = (__u32)__pa(p_buff); | |
1898 | p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1899 | p_buf-> read.count = privptr->p_env->read_size; | |
1900 | ||
1901 | /* initialize read_h command */ | |
1902 | p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER; | |
1903 | p_buf-> read_h.cda = | |
1904 | (__u32)__pa(&(p_buf->header)); | |
1905 | p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1906 | p_buf-> read_h.count = sizeof(struct clawh); | |
1907 | ||
1908 | /* initialize Signal command */ | |
1909 | p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD; | |
1910 | p_buf-> signal.cda = | |
1911 | (__u32)__pa(&(pClawH->flag)); | |
1912 | p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1913 | p_buf-> signal.count = 1; | |
1914 | ||
1915 | /* initialize r_TIC_1 command */ | |
1916 | p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1917 | p_buf-> r_TIC_1.cda = (__u32)real_TIC_address; | |
1918 | p_buf-> r_TIC_1.flags = 0; | |
1919 | p_buf-> r_TIC_1.count = 0; | |
1920 | ||
1921 | /* initialize r_read_FF command */ | |
1922 | p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1923 | p_buf-> r_read_FF.cda = | |
1924 | (__u32)__pa(&(pClawH->flag)); | |
1925 | p_buf-> r_read_FF.flags = | |
1926 | CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI; | |
1927 | p_buf-> r_read_FF.count = 1; | |
1928 | ||
1929 | /* initialize r_TIC_2 */ | |
1930 | memcpy(&p_buf->r_TIC_2, &p_buf->r_TIC_1, | |
1931 | sizeof(struct ccw1)); | |
1932 | ||
1933 | /* initialize Header */ | |
1934 | p_buf->header.length=0xffff; | |
1935 | p_buf->header.opcode=0xff; | |
1936 | p_buf->header.flag=CLAW_PENDING; | |
1937 | ||
1938 | } /* For read_buffers */ | |
1939 | } /* read_size >= PAGE_SIZE */ | |
1940 | } /* pBuffread = NULL */ | |
1da177e4 LT |
1941 | add_claw_reads( dev ,p_first_CCWB , p_last_CCWB); |
1942 | privptr->buffs_alloc = 1; | |
b805da74 | 1943 | |
1da177e4 LT |
1944 | return 0; |
1945 | } /* end of init_ccw_bk */ | |
1946 | ||
1947 | /*-------------------------------------------------------------------* | |
1948 | * * | |
1949 | * probe_error * | |
1950 | * * | |
1951 | *--------------------------------------------------------------------*/ | |
1952 | ||
1953 | static void | |
1954 | probe_error( struct ccwgroup_device *cgdev) | |
1955 | { | |
2b356b46 | 1956 | struct claw_privbk *privptr; |
b805da74 AR |
1957 | |
1958 | CLAW_DBF_TEXT(4, trace, "proberr"); | |
dff59b64 | 1959 | privptr = dev_get_drvdata(&cgdev->dev); |
2b356b46 | 1960 | if (privptr != NULL) { |
dff59b64 | 1961 | dev_set_drvdata(&cgdev->dev, NULL); |
17fd682e | 1962 | kfree(privptr->p_env); |
2b356b46 MS |
1963 | kfree(privptr->p_mtc_envelope); |
1964 | kfree(privptr); | |
1965 | } | |
1da177e4 LT |
1966 | } /* probe_error */ |
1967 | ||
1da177e4 LT |
1968 | /*-------------------------------------------------------------------* |
1969 | * claw_process_control * | |
1970 | * * | |
1971 | * * | |
1972 | *--------------------------------------------------------------------*/ | |
1973 | ||
1974 | static int | |
1975 | claw_process_control( struct net_device *dev, struct ccwbk * p_ccw) | |
1976 | { | |
1977 | ||
1978 | struct clawbuf *p_buf; | |
1979 | struct clawctl ctlbk; | |
1980 | struct clawctl *p_ctlbk; | |
1981 | char temp_host_name[8]; | |
1982 | char temp_ws_name[8]; | |
1983 | struct claw_privbk *privptr; | |
1984 | struct claw_env *p_env; | |
1985 | struct sysval *p_sysval; | |
1986 | struct conncmd *p_connect=NULL; | |
1987 | int rc; | |
1988 | struct chbk *p_ch = NULL; | |
b805da74 AR |
1989 | struct device *tdev; |
1990 | CLAW_DBF_TEXT(2, setup, "clw_cntl"); | |
1da177e4 LT |
1991 | udelay(1000); /* Wait a ms for the control packets to |
1992 | *catch up to each other */ | |
6951df34 | 1993 | privptr = dev->ml_priv; |
1da177e4 | 1994 | p_env=privptr->p_env; |
319cb083 | 1995 | tdev = &privptr->channel[READ_CHANNEL].cdev->dev; |
1da177e4 LT |
1996 | memcpy( &temp_host_name, p_env->host_name, 8); |
1997 | memcpy( &temp_ws_name, p_env->adapter_name , 8); | |
4811fcb7 | 1998 | dev_info(tdev, "%s: CLAW device %.8s: " |
1da177e4 LT |
1999 | "Received Control Packet\n", |
2000 | dev->name, temp_ws_name); | |
2001 | if (privptr->release_pend==1) { | |
1da177e4 LT |
2002 | return 0; |
2003 | } | |
2004 | p_buf=p_ccw->p_buffer; | |
2005 | p_ctlbk=&ctlbk; | |
2006 | if (p_env->packing == DO_PACKED) { /* packing in progress?*/ | |
2007 | memcpy(p_ctlbk, &p_buf->buffer[4], sizeof(struct clawctl)); | |
2008 | } else { | |
2009 | memcpy(p_ctlbk, p_buf, sizeof(struct clawctl)); | |
2010 | } | |
1da177e4 LT |
2011 | switch (p_ctlbk->command) |
2012 | { | |
b805da74 AR |
2013 | case SYSTEM_VALIDATE_REQUEST: |
2014 | if (p_ctlbk->version != CLAW_VERSION_ID) { | |
2015 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2016 | CLAW_RC_WRONG_VERSION); | |
4811fcb7 AR |
2017 | dev_warn(tdev, "The communication peer of %s" |
2018 | " uses an incorrect API version %d\n", | |
2019 | dev->name, p_ctlbk->version); | |
b805da74 AR |
2020 | } |
2021 | p_sysval = (struct sysval *)&(p_ctlbk->data); | |
4811fcb7 AR |
2022 | dev_info(tdev, "%s: Recv Sys Validate Request: " |
2023 | "Vers=%d,link_id=%d,Corr=%d,WS name=%.8s," | |
2024 | "Host name=%.8s\n", | |
2025 | dev->name, p_ctlbk->version, | |
2026 | p_ctlbk->linkid, | |
2027 | p_ctlbk->correlator, | |
2028 | p_sysval->WS_name, | |
2029 | p_sysval->host_name); | |
b805da74 AR |
2030 | if (memcmp(temp_host_name, p_sysval->host_name, 8)) { |
2031 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2032 | CLAW_RC_NAME_MISMATCH); | |
2033 | CLAW_DBF_TEXT(2, setup, "HSTBAD"); | |
2034 | CLAW_DBF_TEXT_(2, setup, "%s", p_sysval->host_name); | |
2035 | CLAW_DBF_TEXT_(2, setup, "%s", temp_host_name); | |
4811fcb7 AR |
2036 | dev_warn(tdev, |
2037 | "Host name %s for %s does not match the" | |
2038 | " remote adapter name %s\n", | |
b805da74 | 2039 | p_sysval->host_name, |
4811fcb7 | 2040 | dev->name, |
b805da74 AR |
2041 | temp_host_name); |
2042 | } | |
2043 | if (memcmp(temp_ws_name, p_sysval->WS_name, 8)) { | |
2044 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2045 | CLAW_RC_NAME_MISMATCH); | |
2046 | CLAW_DBF_TEXT(2, setup, "WSNBAD"); | |
2047 | CLAW_DBF_TEXT_(2, setup, "%s", p_sysval->WS_name); | |
2048 | CLAW_DBF_TEXT_(2, setup, "%s", temp_ws_name); | |
4811fcb7 AR |
2049 | dev_warn(tdev, "Adapter name %s for %s does not match" |
2050 | " the remote host name %s\n", | |
2051 | p_sysval->WS_name, | |
2052 | dev->name, | |
2053 | temp_ws_name); | |
b805da74 AR |
2054 | } |
2055 | if ((p_sysval->write_frame_size < p_env->write_size) && | |
2056 | (p_env->packing == 0)) { | |
2057 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2058 | CLAW_RC_HOST_RCV_TOO_SMALL); | |
4811fcb7 AR |
2059 | dev_warn(tdev, |
2060 | "The local write buffer is smaller than the" | |
2061 | " remote read buffer\n"); | |
b805da74 AR |
2062 | CLAW_DBF_TEXT(2, setup, "wrtszbad"); |
2063 | } | |
2064 | if ((p_sysval->read_frame_size < p_env->read_size) && | |
2065 | (p_env->packing == 0)) { | |
2066 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2067 | CLAW_RC_HOST_RCV_TOO_SMALL); | |
4811fcb7 AR |
2068 | dev_warn(tdev, |
2069 | "The local read buffer is smaller than the" | |
2070 | " remote write buffer\n"); | |
b805da74 AR |
2071 | CLAW_DBF_TEXT(2, setup, "rdsizbad"); |
2072 | } | |
2073 | claw_snd_sys_validate_rsp(dev, p_ctlbk, 0); | |
4811fcb7 AR |
2074 | dev_info(tdev, |
2075 | "CLAW device %.8s: System validate" | |
2076 | " completed.\n", temp_ws_name); | |
2077 | dev_info(tdev, | |
2078 | "%s: sys Validate Rsize:%d Wsize:%d\n", | |
2079 | dev->name, p_sysval->read_frame_size, | |
2080 | p_sysval->write_frame_size); | |
b805da74 AR |
2081 | privptr->system_validate_comp = 1; |
2082 | if (strncmp(p_env->api_type, WS_APPL_NAME_PACKED, 6) == 0) | |
2083 | p_env->packing = PACKING_ASK; | |
2084 | claw_strt_conn_req(dev); | |
2085 | break; | |
2086 | case SYSTEM_VALIDATE_RESPONSE: | |
2087 | p_sysval = (struct sysval *)&(p_ctlbk->data); | |
4811fcb7 AR |
2088 | dev_info(tdev, |
2089 | "Settings for %s validated (version=%d, " | |
2090 | "remote device=%d, rc=%d, adapter name=%.8s, " | |
2091 | "host name=%.8s)\n", | |
b805da74 AR |
2092 | dev->name, |
2093 | p_ctlbk->version, | |
2094 | p_ctlbk->correlator, | |
2095 | p_ctlbk->rc, | |
2096 | p_sysval->WS_name, | |
2097 | p_sysval->host_name); | |
2098 | switch (p_ctlbk->rc) { | |
2099 | case 0: | |
4811fcb7 AR |
2100 | dev_info(tdev, "%s: CLAW device " |
2101 | "%.8s: System validate completed.\n", | |
2102 | dev->name, temp_ws_name); | |
b805da74 AR |
2103 | if (privptr->system_validate_comp == 0) |
2104 | claw_strt_conn_req(dev); | |
2105 | privptr->system_validate_comp = 1; | |
2106 | break; | |
2107 | case CLAW_RC_NAME_MISMATCH: | |
4811fcb7 AR |
2108 | dev_warn(tdev, "Validating %s failed because of" |
2109 | " a host or adapter name mismatch\n", | |
2110 | dev->name); | |
b805da74 AR |
2111 | break; |
2112 | case CLAW_RC_WRONG_VERSION: | |
4811fcb7 AR |
2113 | dev_warn(tdev, "Validating %s failed because of a" |
2114 | " version conflict\n", | |
b805da74 AR |
2115 | dev->name); |
2116 | break; | |
2117 | case CLAW_RC_HOST_RCV_TOO_SMALL: | |
4811fcb7 AR |
2118 | dev_warn(tdev, "Validating %s failed because of a" |
2119 | " frame size conflict\n", | |
b805da74 AR |
2120 | dev->name); |
2121 | break; | |
2122 | default: | |
4811fcb7 AR |
2123 | dev_warn(tdev, "The communication peer of %s rejected" |
2124 | " the connection\n", | |
2125 | dev->name); | |
b805da74 AR |
2126 | break; |
2127 | } | |
2128 | break; | |
1da177e4 | 2129 | |
b805da74 AR |
2130 | case CONNECTION_REQUEST: |
2131 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
4811fcb7 | 2132 | dev_info(tdev, "%s: Recv Conn Req: Vers=%d,link_id=%d," |
b805da74 AR |
2133 | "Corr=%d,HOST appl=%.8s,WS appl=%.8s\n", |
2134 | dev->name, | |
2135 | p_ctlbk->version, | |
2136 | p_ctlbk->linkid, | |
2137 | p_ctlbk->correlator, | |
2138 | p_connect->host_name, | |
2139 | p_connect->WS_name); | |
2140 | if (privptr->active_link_ID != 0) { | |
2141 | claw_snd_disc(dev, p_ctlbk); | |
4811fcb7 AR |
2142 | dev_info(tdev, "%s rejected a connection request" |
2143 | " because it is already active\n", | |
b805da74 AR |
2144 | dev->name); |
2145 | } | |
2146 | if (p_ctlbk->linkid != 1) { | |
2147 | claw_snd_disc(dev, p_ctlbk); | |
4811fcb7 AR |
2148 | dev_info(tdev, "%s rejected a request to open multiple" |
2149 | " connections\n", | |
b805da74 AR |
2150 | dev->name); |
2151 | } | |
2152 | rc = find_link(dev, p_connect->host_name, p_connect->WS_name); | |
2153 | if (rc != 0) { | |
2154 | claw_snd_disc(dev, p_ctlbk); | |
4811fcb7 AR |
2155 | dev_info(tdev, "%s rejected a connection request" |
2156 | " because of a type mismatch\n", | |
b805da74 AR |
2157 | dev->name); |
2158 | } | |
2159 | claw_send_control(dev, | |
2160 | CONNECTION_CONFIRM, p_ctlbk->linkid, | |
2161 | p_ctlbk->correlator, | |
2162 | 0, p_connect->host_name, | |
2163 | p_connect->WS_name); | |
2164 | if (p_env->packing == PACKING_ASK) { | |
2165 | p_env->packing = PACK_SEND; | |
2166 | claw_snd_conn_req(dev, 0); | |
2167 | } | |
4811fcb7 | 2168 | dev_info(tdev, "%s: CLAW device %.8s: Connection " |
b805da74 AR |
2169 | "completed link_id=%d.\n", |
2170 | dev->name, temp_ws_name, | |
2171 | p_ctlbk->linkid); | |
2172 | privptr->active_link_ID = p_ctlbk->linkid; | |
319cb083 | 2173 | p_ch = &privptr->channel[WRITE_CHANNEL]; |
b805da74 AR |
2174 | wake_up(&p_ch->wait); /* wake up claw_open ( WRITE) */ |
2175 | break; | |
2176 | case CONNECTION_RESPONSE: | |
2177 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
4811fcb7 | 2178 | dev_info(tdev, "%s: Recv Conn Resp: Vers=%d,link_id=%d," |
b805da74 AR |
2179 | "Corr=%d,RC=%d,Host appl=%.8s, WS appl=%.8s\n", |
2180 | dev->name, | |
2181 | p_ctlbk->version, | |
2182 | p_ctlbk->linkid, | |
2183 | p_ctlbk->correlator, | |
2184 | p_ctlbk->rc, | |
2185 | p_connect->host_name, | |
2186 | p_connect->WS_name); | |
2187 | ||
2188 | if (p_ctlbk->rc != 0) { | |
4811fcb7 AR |
2189 | dev_warn(tdev, "The communication peer of %s rejected" |
2190 | " a connection request\n", | |
2191 | dev->name); | |
b805da74 AR |
2192 | return 1; |
2193 | } | |
2194 | rc = find_link(dev, | |
2195 | p_connect->host_name, p_connect->WS_name); | |
2196 | if (rc != 0) { | |
2197 | claw_snd_disc(dev, p_ctlbk); | |
4811fcb7 AR |
2198 | dev_warn(tdev, "The communication peer of %s" |
2199 | " rejected a connection " | |
2200 | "request because of a type mismatch\n", | |
b805da74 AR |
2201 | dev->name); |
2202 | } | |
2203 | /* should be until CONNECTION_CONFIRM */ | |
2204 | privptr->active_link_ID = -(p_ctlbk->linkid); | |
2205 | break; | |
2206 | case CONNECTION_CONFIRM: | |
2207 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
4811fcb7 AR |
2208 | dev_info(tdev, |
2209 | "%s: Recv Conn Confirm:Vers=%d,link_id=%d," | |
b805da74 AR |
2210 | "Corr=%d,Host appl=%.8s,WS appl=%.8s\n", |
2211 | dev->name, | |
2212 | p_ctlbk->version, | |
2213 | p_ctlbk->linkid, | |
2214 | p_ctlbk->correlator, | |
2215 | p_connect->host_name, | |
2216 | p_connect->WS_name); | |
2217 | if (p_ctlbk->linkid == -(privptr->active_link_ID)) { | |
2218 | privptr->active_link_ID = p_ctlbk->linkid; | |
2219 | if (p_env->packing > PACKING_ASK) { | |
4811fcb7 AR |
2220 | dev_info(tdev, |
2221 | "%s: Confirmed Now packing\n", dev->name); | |
1da177e4 LT |
2222 | p_env->packing = DO_PACKED; |
2223 | } | |
319cb083 | 2224 | p_ch = &privptr->channel[WRITE_CHANNEL]; |
b805da74 AR |
2225 | wake_up(&p_ch->wait); |
2226 | } else { | |
4811fcb7 AR |
2227 | dev_warn(tdev, "Activating %s failed because of" |
2228 | " an incorrect link ID=%d\n", | |
b805da74 AR |
2229 | dev->name, p_ctlbk->linkid); |
2230 | claw_snd_disc(dev, p_ctlbk); | |
2231 | } | |
2232 | break; | |
2233 | case DISCONNECT: | |
4811fcb7 | 2234 | dev_info(tdev, "%s: Disconnect: " |
b805da74 AR |
2235 | "Vers=%d,link_id=%d,Corr=%d\n", |
2236 | dev->name, p_ctlbk->version, | |
2237 | p_ctlbk->linkid, p_ctlbk->correlator); | |
2238 | if ((p_ctlbk->linkid == 2) && | |
2239 | (p_env->packing == PACK_SEND)) { | |
2240 | privptr->active_link_ID = 1; | |
2241 | p_env->packing = DO_PACKED; | |
2242 | } else | |
2243 | privptr->active_link_ID = 0; | |
2244 | break; | |
2245 | case CLAW_ERROR: | |
4811fcb7 | 2246 | dev_warn(tdev, "The communication peer of %s failed\n", |
b805da74 AR |
2247 | dev->name); |
2248 | break; | |
2249 | default: | |
4811fcb7 AR |
2250 | dev_warn(tdev, "The communication peer of %s sent" |
2251 | " an unknown command code\n", | |
2252 | dev->name); | |
b805da74 | 2253 | break; |
1da177e4 LT |
2254 | } |
2255 | ||
1da177e4 LT |
2256 | return 0; |
2257 | } /* end of claw_process_control */ | |
2258 | ||
2259 | ||
2260 | /*-------------------------------------------------------------------* | |
2261 | * claw_send_control * | |
2262 | * * | |
2263 | *--------------------------------------------------------------------*/ | |
2264 | ||
2265 | static int | |
2266 | claw_send_control(struct net_device *dev, __u8 type, __u8 link, | |
2267 | __u8 correlator, __u8 rc, char *local_name, char *remote_name) | |
2268 | { | |
2269 | struct claw_privbk *privptr; | |
2270 | struct clawctl *p_ctl; | |
2271 | struct sysval *p_sysval; | |
2272 | struct conncmd *p_connect; | |
2273 | struct sk_buff *skb; | |
2274 | ||
b805da74 | 2275 | CLAW_DBF_TEXT(2, setup, "sndcntl"); |
6951df34 | 2276 | privptr = dev->ml_priv; |
1da177e4 LT |
2277 | p_ctl=(struct clawctl *)&privptr->ctl_bk; |
2278 | ||
2279 | p_ctl->command=type; | |
2280 | p_ctl->version=CLAW_VERSION_ID; | |
2281 | p_ctl->linkid=link; | |
2282 | p_ctl->correlator=correlator; | |
2283 | p_ctl->rc=rc; | |
2284 | ||
2285 | p_sysval=(struct sysval *)&p_ctl->data; | |
2286 | p_connect=(struct conncmd *)&p_ctl->data; | |
2287 | ||
2288 | switch (p_ctl->command) { | |
2289 | case SYSTEM_VALIDATE_REQUEST: | |
2290 | case SYSTEM_VALIDATE_RESPONSE: | |
2291 | memcpy(&p_sysval->host_name, local_name, 8); | |
2292 | memcpy(&p_sysval->WS_name, remote_name, 8); | |
2293 | if (privptr->p_env->packing > 0) { | |
4811fcb7 AR |
2294 | p_sysval->read_frame_size = DEF_PACK_BUFSIZE; |
2295 | p_sysval->write_frame_size = DEF_PACK_BUFSIZE; | |
1da177e4 | 2296 | } else { |
b805da74 | 2297 | /* how big is the biggest group of packets */ |
4811fcb7 AR |
2298 | p_sysval->read_frame_size = |
2299 | privptr->p_env->read_size; | |
2300 | p_sysval->write_frame_size = | |
2301 | privptr->p_env->write_size; | |
1da177e4 LT |
2302 | } |
2303 | memset(&p_sysval->reserved, 0x00, 4); | |
2304 | break; | |
2305 | case CONNECTION_REQUEST: | |
2306 | case CONNECTION_RESPONSE: | |
2307 | case CONNECTION_CONFIRM: | |
2308 | case DISCONNECT: | |
2309 | memcpy(&p_sysval->host_name, local_name, 8); | |
2310 | memcpy(&p_sysval->WS_name, remote_name, 8); | |
2311 | if (privptr->p_env->packing > 0) { | |
2312 | /* How big is the biggest packet */ | |
2313 | p_connect->reserved1[0]=CLAW_FRAME_SIZE; | |
2314 | p_connect->reserved1[1]=CLAW_FRAME_SIZE; | |
2315 | } else { | |
2316 | memset(&p_connect->reserved1, 0x00, 4); | |
2317 | memset(&p_connect->reserved2, 0x00, 4); | |
2318 | } | |
2319 | break; | |
2320 | default: | |
2321 | break; | |
2322 | } | |
2323 | ||
2324 | /* write Control Record to the device */ | |
2325 | ||
2326 | ||
2327 | skb = dev_alloc_skb(sizeof(struct clawctl)); | |
2328 | if (!skb) { | |
1da177e4 LT |
2329 | return -ENOMEM; |
2330 | } | |
2331 | memcpy(skb_put(skb, sizeof(struct clawctl)), | |
2332 | p_ctl, sizeof(struct clawctl)); | |
1da177e4 LT |
2333 | if (privptr->p_env->packing >= PACK_SEND) |
2334 | claw_hw_tx(skb, dev, 1); | |
2335 | else | |
2336 | claw_hw_tx(skb, dev, 0); | |
1da177e4 LT |
2337 | return 0; |
2338 | } /* end of claw_send_control */ | |
2339 | ||
2340 | /*-------------------------------------------------------------------* | |
2341 | * claw_snd_conn_req * | |
2342 | * * | |
2343 | *--------------------------------------------------------------------*/ | |
2344 | static int | |
2345 | claw_snd_conn_req(struct net_device *dev, __u8 link) | |
2346 | { | |
2347 | int rc; | |
6951df34 | 2348 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 LT |
2349 | struct clawctl *p_ctl; |
2350 | ||
b805da74 | 2351 | CLAW_DBF_TEXT(2, setup, "snd_conn"); |
1da177e4 LT |
2352 | rc = 1; |
2353 | p_ctl=(struct clawctl *)&privptr->ctl_bk; | |
2354 | p_ctl->linkid = link; | |
2355 | if ( privptr->system_validate_comp==0x00 ) { | |
1da177e4 LT |
2356 | return rc; |
2357 | } | |
2358 | if (privptr->p_env->packing == PACKING_ASK ) | |
2359 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2360 | WS_APPL_NAME_PACKED, WS_APPL_NAME_PACKED); | |
2361 | if (privptr->p_env->packing == PACK_SEND) { | |
2362 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2363 | WS_APPL_NAME_IP_NAME, WS_APPL_NAME_IP_NAME); | |
2364 | } | |
2365 | if (privptr->p_env->packing == 0) | |
2366 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2367 | HOST_APPL_NAME, privptr->p_env->api_type); | |
1da177e4 LT |
2368 | return rc; |
2369 | ||
2370 | } /* end of claw_snd_conn_req */ | |
2371 | ||
2372 | ||
2373 | /*-------------------------------------------------------------------* | |
2374 | * claw_snd_disc * | |
2375 | * * | |
2376 | *--------------------------------------------------------------------*/ | |
2377 | ||
2378 | static int | |
2379 | claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl) | |
2380 | { | |
2381 | int rc; | |
2382 | struct conncmd * p_connect; | |
2383 | ||
b805da74 | 2384 | CLAW_DBF_TEXT(2, setup, "snd_dsc"); |
1da177e4 LT |
2385 | p_connect=(struct conncmd *)&p_ctl->data; |
2386 | ||
2387 | rc=claw_send_control(dev, DISCONNECT, p_ctl->linkid, | |
2388 | p_ctl->correlator, 0, | |
2389 | p_connect->host_name, p_connect->WS_name); | |
1da177e4 LT |
2390 | return rc; |
2391 | } /* end of claw_snd_disc */ | |
2392 | ||
2393 | ||
2394 | /*-------------------------------------------------------------------* | |
2395 | * claw_snd_sys_validate_rsp * | |
2396 | * * | |
2397 | *--------------------------------------------------------------------*/ | |
2398 | ||
2399 | static int | |
2400 | claw_snd_sys_validate_rsp(struct net_device *dev, | |
2401 | struct clawctl *p_ctl, __u32 return_code) | |
2402 | { | |
2403 | struct claw_env * p_env; | |
2404 | struct claw_privbk *privptr; | |
2405 | int rc; | |
2406 | ||
b805da74 | 2407 | CLAW_DBF_TEXT(2, setup, "chkresp"); |
6951df34 | 2408 | privptr = dev->ml_priv; |
1da177e4 LT |
2409 | p_env=privptr->p_env; |
2410 | rc=claw_send_control(dev, SYSTEM_VALIDATE_RESPONSE, | |
2411 | p_ctl->linkid, | |
2412 | p_ctl->correlator, | |
2413 | return_code, | |
2414 | p_env->host_name, | |
2415 | p_env->adapter_name ); | |
1da177e4 LT |
2416 | return rc; |
2417 | } /* end of claw_snd_sys_validate_rsp */ | |
2418 | ||
2419 | /*-------------------------------------------------------------------* | |
2420 | * claw_strt_conn_req * | |
2421 | * * | |
2422 | *--------------------------------------------------------------------*/ | |
2423 | ||
2424 | static int | |
2425 | claw_strt_conn_req(struct net_device *dev ) | |
2426 | { | |
2427 | int rc; | |
2428 | ||
b805da74 | 2429 | CLAW_DBF_TEXT(2, setup, "conn_req"); |
1da177e4 | 2430 | rc=claw_snd_conn_req(dev, 1); |
1da177e4 LT |
2431 | return rc; |
2432 | } /* end of claw_strt_conn_req */ | |
2433 | ||
2434 | ||
2435 | ||
2436 | /*-------------------------------------------------------------------* | |
2437 | * claw_stats * | |
2438 | *-------------------------------------------------------------------*/ | |
2439 | ||
2440 | static struct | |
2441 | net_device_stats *claw_stats(struct net_device *dev) | |
2442 | { | |
2443 | struct claw_privbk *privptr; | |
b805da74 AR |
2444 | |
2445 | CLAW_DBF_TEXT(4, trace, "stats"); | |
6951df34 | 2446 | privptr = dev->ml_priv; |
1da177e4 LT |
2447 | return &privptr->stats; |
2448 | } /* end of claw_stats */ | |
2449 | ||
2450 | ||
2451 | /*-------------------------------------------------------------------* | |
2452 | * unpack_read * | |
2453 | * * | |
2454 | *--------------------------------------------------------------------*/ | |
2455 | static void | |
2456 | unpack_read(struct net_device *dev ) | |
2457 | { | |
2458 | struct sk_buff *skb; | |
2459 | struct claw_privbk *privptr; | |
2460 | struct claw_env *p_env; | |
2461 | struct ccwbk *p_this_ccw; | |
2462 | struct ccwbk *p_first_ccw; | |
2463 | struct ccwbk *p_last_ccw; | |
2464 | struct clawph *p_packh; | |
2465 | void *p_packd; | |
2466 | struct clawctl *p_ctlrec=NULL; | |
b805da74 | 2467 | struct device *p_dev; |
1da177e4 LT |
2468 | |
2469 | __u32 len_of_data; | |
2470 | __u32 pack_off; | |
2471 | __u8 link_num; | |
2472 | __u8 mtc_this_frm=0; | |
2473 | __u32 bytes_to_mov; | |
1da177e4 LT |
2474 | int i=0; |
2475 | int p=0; | |
2476 | ||
b805da74 | 2477 | CLAW_DBF_TEXT(4, trace, "unpkread"); |
1da177e4 LT |
2478 | p_first_ccw=NULL; |
2479 | p_last_ccw=NULL; | |
2480 | p_packh=NULL; | |
2481 | p_packd=NULL; | |
6951df34 | 2482 | privptr = dev->ml_priv; |
b805da74 | 2483 | |
319cb083 | 2484 | p_dev = &privptr->channel[READ_CHANNEL].cdev->dev; |
1da177e4 LT |
2485 | p_env = privptr->p_env; |
2486 | p_this_ccw=privptr->p_read_active_first; | |
1da177e4 | 2487 | while (p_this_ccw!=NULL && p_this_ccw->header.flag!=CLAW_PENDING) { |
1da177e4 LT |
2488 | pack_off = 0; |
2489 | p = 0; | |
2490 | p_this_ccw->header.flag=CLAW_PENDING; | |
2491 | privptr->p_read_active_first=p_this_ccw->next; | |
2492 | p_this_ccw->next=NULL; | |
2493 | p_packh = (struct clawph *)p_this_ccw->p_buffer; | |
2494 | if ((p_env->packing == PACK_SEND) && | |
2495 | (p_packh->len == 32) && | |
2496 | (p_packh->link_num == 0)) { /* is it a packed ctl rec? */ | |
2497 | p_packh++; /* peek past pack header */ | |
2498 | p_ctlrec = (struct clawctl *)p_packh; | |
2499 | p_packh--; /* un peek */ | |
2500 | if ((p_ctlrec->command == CONNECTION_RESPONSE) || | |
2501 | (p_ctlrec->command == CONNECTION_CONFIRM)) | |
2502 | p_env->packing = DO_PACKED; | |
2503 | } | |
2504 | if (p_env->packing == DO_PACKED) | |
2505 | link_num=p_packh->link_num; | |
2506 | else | |
2507 | link_num=p_this_ccw->header.opcode / 8; | |
2508 | if ((p_this_ccw->header.opcode & MORE_to_COME_FLAG)!=0) { | |
1da177e4 LT |
2509 | mtc_this_frm=1; |
2510 | if (p_this_ccw->header.length!= | |
2511 | privptr->p_env->read_size ) { | |
4811fcb7 AR |
2512 | dev_warn(p_dev, |
2513 | "The communication peer of %s" | |
2514 | " sent a faulty" | |
2515 | " frame of length %02x\n", | |
1da177e4 LT |
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; | |
4811fcb7 | 2547 | if ((p_packh->len == 0) || /* done with this frame? */ |
1da177e4 LT |
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 { | |
4811fcb7 AR |
2597 | dev_info(p_dev, "Allocating a buffer for" |
2598 | " incoming data failed\n"); | |
1da177e4 | 2599 | privptr->stats.rx_dropped++; |
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; | |
319cb083 | 2656 | p_ch = &privptr->channel[READ_CHANNEL]; |
1da177e4 | 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; |
319cb083 | 2710 | p_ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 | 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"); |
4811fcb7 AR |
2723 | rc = ccw_device_start(p_ch->cdev, &p_first_ccw->write, parm, |
2724 | 0xff, 0); | |
1da177e4 LT |
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_this_ccw; |
2744 | struct ccwbk*p_next_ccw; | |
b805da74 AR |
2745 | |
2746 | CLAW_DBF_TEXT(4, trace, "freewrtb"); | |
1da177e4 | 2747 | /* scan the write queue to free any completed write packets */ |
1da177e4 LT |
2748 | p_this_ccw=privptr->p_write_active_first; |
2749 | while ( (p_this_ccw!=NULL) && (p_this_ccw->header.flag!=CLAW_PENDING)) | |
2750 | { | |
2751 | p_next_ccw = p_this_ccw->next; | |
2752 | if (((p_next_ccw!=NULL) && | |
2753 | (p_next_ccw->header.flag!=CLAW_PENDING)) || | |
2754 | ((p_this_ccw == privptr->p_write_active_last) && | |
2755 | (p_this_ccw->header.flag!=CLAW_PENDING))) { | |
2756 | /* The next CCW is OK or this is */ | |
2757 | /* the last CCW...free it @A1A */ | |
2758 | privptr->p_write_active_first=p_this_ccw->next; | |
2759 | p_this_ccw->header.flag=CLAW_PENDING; | |
2760 | p_this_ccw->next=privptr->p_write_free_chain; | |
2761 | privptr->p_write_free_chain=p_this_ccw; | |
2762 | ++privptr->write_free_count; | |
2763 | privptr->stats.tx_bytes+= p_this_ccw->write.count; | |
2764 | p_this_ccw=privptr->p_write_active_first; | |
2765 | privptr->stats.tx_packets++; | |
2766 | } | |
2767 | else { | |
2768 | break; | |
2769 | } | |
2770 | } | |
2771 | if (privptr->write_free_count!=0) { | |
2772 | claw_clearbit_busy(TB_NOBUFFER,dev); | |
2773 | } | |
2774 | /* whole chain removed? */ | |
2775 | if (privptr->p_write_active_first==NULL) { | |
2776 | privptr->p_write_active_last=NULL; | |
1da177e4 | 2777 | } |
b805da74 | 2778 | CLAW_DBF_TEXT_(4, trace, "FWC=%d", privptr->write_free_count); |
1da177e4 LT |
2779 | return; |
2780 | } | |
2781 | ||
2782 | /*-------------------------------------------------------------------* | |
2783 | * claw free netdevice * | |
2784 | * * | |
2785 | *--------------------------------------------------------------------*/ | |
2786 | static void | |
2787 | claw_free_netdevice(struct net_device * dev, int free_dev) | |
2788 | { | |
2789 | struct claw_privbk *privptr; | |
1da177e4 | 2790 | |
b805da74 | 2791 | CLAW_DBF_TEXT(2, setup, "free_dev"); |
1da177e4 LT |
2792 | if (!dev) |
2793 | return; | |
b805da74 | 2794 | CLAW_DBF_TEXT_(2, setup, "%s", dev->name); |
6951df34 | 2795 | privptr = dev->ml_priv; |
1da177e4 LT |
2796 | if (dev->flags & IFF_RUNNING) |
2797 | claw_release(dev); | |
2798 | if (privptr) { | |
319cb083 | 2799 | privptr->channel[READ_CHANNEL].ndev = NULL; /* say it's free */ |
1da177e4 | 2800 | } |
6951df34 | 2801 | dev->ml_priv = NULL; |
1da177e4 LT |
2802 | #ifdef MODULE |
2803 | if (free_dev) { | |
2804 | free_netdev(dev); | |
2805 | } | |
2806 | #endif | |
b805da74 | 2807 | CLAW_DBF_TEXT(2, setup, "free_ok"); |
1da177e4 LT |
2808 | } |
2809 | ||
2810 | /** | |
2811 | * Claw init netdevice | |
2812 | * Initialize everything of the net device except the name and the | |
2813 | * channel structs. | |
2814 | */ | |
2171dc18 FB |
2815 | static const struct net_device_ops claw_netdev_ops = { |
2816 | .ndo_open = claw_open, | |
2817 | .ndo_stop = claw_release, | |
2818 | .ndo_get_stats = claw_stats, | |
2819 | .ndo_start_xmit = claw_tx, | |
2820 | .ndo_change_mtu = claw_change_mtu, | |
2821 | }; | |
2822 | ||
1da177e4 LT |
2823 | static void |
2824 | claw_init_netdevice(struct net_device * dev) | |
2825 | { | |
b805da74 AR |
2826 | CLAW_DBF_TEXT(2, setup, "init_dev"); |
2827 | CLAW_DBF_TEXT_(2, setup, "%s", dev->name); | |
1da177e4 | 2828 | dev->mtu = CLAW_DEFAULT_MTU_SIZE; |
1da177e4 LT |
2829 | dev->hard_header_len = 0; |
2830 | dev->addr_len = 0; | |
2831 | dev->type = ARPHRD_SLIP; | |
2832 | dev->tx_queue_len = 1300; | |
2833 | dev->flags = IFF_POINTOPOINT | IFF_NOARP; | |
2171dc18 | 2834 | dev->netdev_ops = &claw_netdev_ops; |
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 | |
4811fcb7 | 2883 | dev_info(&cgdev->dev, "add for %s\n", |
319cb083 | 2884 | dev_name(&cgdev->cdev[READ_CHANNEL]->dev)); |
b805da74 | 2885 | CLAW_DBF_TEXT(2, setup, "new_dev"); |
dff59b64 | 2886 | privptr = dev_get_drvdata(&cgdev->dev); |
319cb083 HC |
2887 | dev_set_drvdata(&cgdev->cdev[READ_CHANNEL]->dev, privptr); |
2888 | dev_set_drvdata(&cgdev->cdev[WRITE_CHANNEL]->dev, privptr); | |
1da177e4 LT |
2889 | if (!privptr) |
2890 | return -ENODEV; | |
2891 | p_env = privptr->p_env; | |
319cb083 HC |
2892 | ccw_device_get_id(cgdev->cdev[READ_CHANNEL], &dev_id); |
2893 | p_env->devno[READ_CHANNEL] = dev_id.devno; | |
2894 | ccw_device_get_id(cgdev->cdev[WRITE_CHANNEL], &dev_id); | |
2895 | p_env->devno[WRITE_CHANNEL] = 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) { | |
4811fcb7 AR |
2900 | dev_warn(&cgdev->dev, "Creating a CLAW group device" |
2901 | " failed with error code %d\n", ret); | |
b805da74 | 2902 | goto out; |
1da177e4 | 2903 | } |
319cb083 | 2904 | ret = ccw_device_set_online(cgdev->cdev[READ_CHANNEL]); |
1da177e4 | 2905 | if (ret != 0) { |
4811fcb7 AR |
2906 | dev_warn(&cgdev->dev, |
2907 | "Setting the read subchannel online" | |
2908 | " failed with error code %d\n", ret); | |
1da177e4 LT |
2909 | goto out; |
2910 | } | |
319cb083 | 2911 | ret = ccw_device_set_online(cgdev->cdev[WRITE_CHANNEL]); |
1da177e4 | 2912 | if (ret != 0) { |
4811fcb7 AR |
2913 | dev_warn(&cgdev->dev, |
2914 | "Setting the write subchannel online " | |
2915 | "failed with error code %d\n", ret); | |
1da177e4 LT |
2916 | goto out; |
2917 | } | |
2918 | dev = alloc_netdev(0,"claw%d",claw_init_netdevice); | |
2919 | if (!dev) { | |
4811fcb7 AR |
2920 | dev_warn(&cgdev->dev, |
2921 | "Activating the CLAW device failed\n"); | |
1da177e4 LT |
2922 | goto out; |
2923 | } | |
6951df34 | 2924 | dev->ml_priv = privptr; |
dff59b64 | 2925 | dev_set_drvdata(&cgdev->dev, privptr); |
319cb083 HC |
2926 | dev_set_drvdata(&cgdev->cdev[READ_CHANNEL]->dev, privptr); |
2927 | dev_set_drvdata(&cgdev->cdev[WRITE_CHANNEL]->dev, privptr); | |
1da177e4 LT |
2928 | /* sysfs magic */ |
2929 | SET_NETDEV_DEV(dev, &cgdev->dev); | |
2930 | if (register_netdev(dev) != 0) { | |
2931 | claw_free_netdevice(dev, 1); | |
b805da74 | 2932 | CLAW_DBF_TEXT(2, trace, "regfail"); |
1da177e4 LT |
2933 | goto out; |
2934 | } | |
2935 | dev->flags &=~IFF_RUNNING; | |
2936 | if (privptr->buffs_alloc == 0) { | |
2937 | ret=init_ccw_bk(dev); | |
2938 | if (ret !=0) { | |
1da177e4 LT |
2939 | unregister_netdev(dev); |
2940 | claw_free_netdevice(dev,1); | |
b805da74 | 2941 | CLAW_DBF_TEXT(2, trace, "ccwmem"); |
1da177e4 LT |
2942 | goto out; |
2943 | } | |
2944 | } | |
319cb083 HC |
2945 | privptr->channel[READ_CHANNEL].ndev = dev; |
2946 | privptr->channel[WRITE_CHANNEL].ndev = dev; | |
1da177e4 LT |
2947 | privptr->p_env->ndev = dev; |
2948 | ||
4811fcb7 | 2949 | dev_info(&cgdev->dev, "%s:readsize=%d writesize=%d " |
1da177e4 LT |
2950 | "readbuffer=%d writebuffer=%d read=0x%04x write=0x%04x\n", |
2951 | dev->name, p_env->read_size, | |
2952 | p_env->write_size, p_env->read_buffers, | |
319cb083 HC |
2953 | p_env->write_buffers, p_env->devno[READ_CHANNEL], |
2954 | p_env->devno[WRITE_CHANNEL]); | |
4811fcb7 | 2955 | dev_info(&cgdev->dev, "%s:host_name:%.8s, adapter_name " |
1da177e4 LT |
2956 | ":%.8s api_type: %.8s\n", |
2957 | dev->name, p_env->host_name, | |
2958 | p_env->adapter_name , p_env->api_type); | |
2959 | return 0; | |
2960 | out: | |
2961 | ccw_device_set_offline(cgdev->cdev[1]); | |
2962 | ccw_device_set_offline(cgdev->cdev[0]); | |
1da177e4 LT |
2963 | return -ENODEV; |
2964 | } | |
2965 | ||
2966 | static void | |
2967 | claw_purge_skb_queue(struct sk_buff_head *q) | |
2968 | { | |
2969 | struct sk_buff *skb; | |
2970 | ||
b805da74 | 2971 | CLAW_DBF_TEXT(4, trace, "purgque"); |
1da177e4 LT |
2972 | while ((skb = skb_dequeue(q))) { |
2973 | atomic_dec(&skb->users); | |
8e84c801 | 2974 | dev_kfree_skb_any(skb); |
1da177e4 LT |
2975 | } |
2976 | } | |
2977 | ||
2978 | /** | |
2979 | * Shutdown an interface. | |
2980 | * | |
2981 | * @param cgdev Device to be shut down. | |
2982 | * | |
2983 | * @returns 0 on success, !0 on failure. | |
2984 | */ | |
2985 | static int | |
2986 | claw_shutdown_device(struct ccwgroup_device *cgdev) | |
2987 | { | |
2988 | struct claw_privbk *priv; | |
2989 | struct net_device *ndev; | |
38ed18ff | 2990 | int ret = 0; |
1da177e4 | 2991 | |
b9d3aed7 | 2992 | CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev)); |
dff59b64 | 2993 | priv = dev_get_drvdata(&cgdev->dev); |
1da177e4 LT |
2994 | if (!priv) |
2995 | return -ENODEV; | |
319cb083 | 2996 | ndev = priv->channel[READ_CHANNEL].ndev; |
1da177e4 LT |
2997 | if (ndev) { |
2998 | /* Close the device */ | |
319cb083 | 2999 | dev_info(&cgdev->dev, "%s: shutting down\n", |
4811fcb7 | 3000 | ndev->name); |
1da177e4 LT |
3001 | if (ndev->flags & IFF_RUNNING) |
3002 | ret = claw_release(ndev); | |
3003 | ndev->flags &=~IFF_RUNNING; | |
3004 | unregister_netdev(ndev); | |
6951df34 | 3005 | ndev->ml_priv = NULL; /* cgdev data, not ndev's to free */ |
1da177e4 | 3006 | claw_free_netdevice(ndev, 1); |
319cb083 HC |
3007 | priv->channel[READ_CHANNEL].ndev = NULL; |
3008 | priv->channel[WRITE_CHANNEL].ndev = NULL; | |
1da177e4 LT |
3009 | priv->p_env->ndev = NULL; |
3010 | } | |
3011 | ccw_device_set_offline(cgdev->cdev[1]); | |
3012 | ccw_device_set_offline(cgdev->cdev[0]); | |
38ed18ff | 3013 | return ret; |
1da177e4 LT |
3014 | } |
3015 | ||
3016 | static void | |
3017 | claw_remove_device(struct ccwgroup_device *cgdev) | |
3018 | { | |
3019 | struct claw_privbk *priv; | |
3020 | ||
b9d3aed7 | 3021 | CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev)); |
dff59b64 | 3022 | priv = dev_get_drvdata(&cgdev->dev); |
4811fcb7 | 3023 | dev_info(&cgdev->dev, " will be removed.\n"); |
1da177e4 LT |
3024 | if (cgdev->state == CCWGROUP_ONLINE) |
3025 | claw_shutdown_device(cgdev); | |
17fd682e JJ |
3026 | kfree(priv->p_mtc_envelope); |
3027 | priv->p_mtc_envelope=NULL; | |
3028 | kfree(priv->p_env); | |
3029 | priv->p_env=NULL; | |
3030 | kfree(priv->channel[0].irb); | |
3031 | priv->channel[0].irb=NULL; | |
3032 | kfree(priv->channel[1].irb); | |
3033 | priv->channel[1].irb=NULL; | |
1da177e4 | 3034 | kfree(priv); |
dff59b64 | 3035 | dev_set_drvdata(&cgdev->dev, NULL); |
319cb083 HC |
3036 | dev_set_drvdata(&cgdev->cdev[READ_CHANNEL]->dev, NULL); |
3037 | dev_set_drvdata(&cgdev->cdev[WRITE_CHANNEL]->dev, NULL); | |
1da177e4 | 3038 | put_device(&cgdev->dev); |
b805da74 AR |
3039 | |
3040 | return; | |
1da177e4 LT |
3041 | } |
3042 | ||
3043 | ||
3044 | /* | |
3045 | * sysfs attributes | |
3046 | */ | |
3047 | static ssize_t | |
3fd3c0a5 | 3048 | claw_hname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3049 | { |
3050 | struct claw_privbk *priv; | |
3051 | struct claw_env * p_env; | |
3052 | ||
dff59b64 | 3053 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3054 | if (!priv) |
3055 | return -ENODEV; | |
3056 | p_env = priv->p_env; | |
3057 | return sprintf(buf, "%s\n",p_env->host_name); | |
3058 | } | |
3059 | ||
3060 | static ssize_t | |
4811fcb7 AR |
3061 | claw_hname_write(struct device *dev, struct device_attribute *attr, |
3062 | const char *buf, size_t count) | |
1da177e4 LT |
3063 | { |
3064 | struct claw_privbk *priv; | |
3065 | struct claw_env * p_env; | |
3066 | ||
dff59b64 | 3067 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3068 | if (!priv) |
3069 | return -ENODEV; | |
3070 | p_env = priv->p_env; | |
3071 | if (count > MAX_NAME_LEN+1) | |
3072 | return -EINVAL; | |
3073 | memset(p_env->host_name, 0x20, MAX_NAME_LEN); | |
3074 | strncpy(p_env->host_name,buf, count); | |
3075 | p_env->host_name[count-1] = 0x20; /* clear extra 0x0a */ | |
3076 | p_env->host_name[MAX_NAME_LEN] = 0x00; | |
b805da74 AR |
3077 | CLAW_DBF_TEXT(2, setup, "HstnSet"); |
3078 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->host_name); | |
1da177e4 LT |
3079 | |
3080 | return count; | |
3081 | } | |
3082 | ||
3083 | static DEVICE_ATTR(host_name, 0644, claw_hname_show, claw_hname_write); | |
3084 | ||
3085 | static ssize_t | |
3fd3c0a5 | 3086 | claw_adname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3087 | { |
3088 | struct claw_privbk *priv; | |
3089 | struct claw_env * p_env; | |
3090 | ||
dff59b64 | 3091 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3092 | if (!priv) |
3093 | return -ENODEV; | |
3094 | p_env = priv->p_env; | |
b805da74 | 3095 | return sprintf(buf, "%s\n", p_env->adapter_name); |
1da177e4 LT |
3096 | } |
3097 | ||
3098 | static ssize_t | |
4811fcb7 AR |
3099 | claw_adname_write(struct device *dev, struct device_attribute *attr, |
3100 | const char *buf, size_t count) | |
1da177e4 LT |
3101 | { |
3102 | struct claw_privbk *priv; | |
3103 | struct claw_env * p_env; | |
3104 | ||
dff59b64 | 3105 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3106 | if (!priv) |
3107 | return -ENODEV; | |
3108 | p_env = priv->p_env; | |
3109 | if (count > MAX_NAME_LEN+1) | |
3110 | return -EINVAL; | |
3111 | memset(p_env->adapter_name, 0x20, MAX_NAME_LEN); | |
3112 | strncpy(p_env->adapter_name,buf, count); | |
3113 | p_env->adapter_name[count-1] = 0x20; /* clear extra 0x0a */ | |
3114 | p_env->adapter_name[MAX_NAME_LEN] = 0x00; | |
b805da74 AR |
3115 | CLAW_DBF_TEXT(2, setup, "AdnSet"); |
3116 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->adapter_name); | |
1da177e4 LT |
3117 | |
3118 | return count; | |
3119 | } | |
3120 | ||
3121 | static DEVICE_ATTR(adapter_name, 0644, claw_adname_show, claw_adname_write); | |
3122 | ||
3123 | static ssize_t | |
3fd3c0a5 | 3124 | claw_apname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3125 | { |
3126 | struct claw_privbk *priv; | |
3127 | struct claw_env * p_env; | |
3128 | ||
dff59b64 | 3129 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3130 | if (!priv) |
3131 | return -ENODEV; | |
3132 | p_env = priv->p_env; | |
3133 | return sprintf(buf, "%s\n", | |
3134 | p_env->api_type); | |
3135 | } | |
3136 | ||
3137 | static ssize_t | |
4811fcb7 AR |
3138 | claw_apname_write(struct device *dev, struct device_attribute *attr, |
3139 | const char *buf, size_t count) | |
1da177e4 LT |
3140 | { |
3141 | struct claw_privbk *priv; | |
3142 | struct claw_env * p_env; | |
3143 | ||
dff59b64 | 3144 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3145 | if (!priv) |
3146 | return -ENODEV; | |
3147 | p_env = priv->p_env; | |
3148 | if (count > MAX_NAME_LEN+1) | |
3149 | return -EINVAL; | |
3150 | memset(p_env->api_type, 0x20, MAX_NAME_LEN); | |
3151 | strncpy(p_env->api_type,buf, count); | |
3152 | p_env->api_type[count-1] = 0x20; /* we get a loose 0x0a */ | |
3153 | p_env->api_type[MAX_NAME_LEN] = 0x00; | |
3154 | if(strncmp(p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
3155 | p_env->read_size=DEF_PACK_BUFSIZE; | |
3156 | p_env->write_size=DEF_PACK_BUFSIZE; | |
3157 | p_env->packing=PACKING_ASK; | |
b805da74 | 3158 | CLAW_DBF_TEXT(2, setup, "PACKING"); |
1da177e4 LT |
3159 | } |
3160 | else { | |
3161 | p_env->packing=0; | |
3162 | p_env->read_size=CLAW_FRAME_SIZE; | |
3163 | p_env->write_size=CLAW_FRAME_SIZE; | |
b805da74 | 3164 | CLAW_DBF_TEXT(2, setup, "ApiSet"); |
1da177e4 | 3165 | } |
b805da74 | 3166 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->api_type); |
1da177e4 LT |
3167 | return count; |
3168 | } | |
3169 | ||
3170 | static DEVICE_ATTR(api_type, 0644, claw_apname_show, claw_apname_write); | |
3171 | ||
3172 | static ssize_t | |
3fd3c0a5 | 3173 | claw_wbuff_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3174 | { |
3175 | struct claw_privbk *priv; | |
3176 | struct claw_env * p_env; | |
3177 | ||
dff59b64 | 3178 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3179 | if (!priv) |
3180 | return -ENODEV; | |
3181 | p_env = priv->p_env; | |
3182 | return sprintf(buf, "%d\n", p_env->write_buffers); | |
3183 | } | |
3184 | ||
3185 | static ssize_t | |
4811fcb7 AR |
3186 | claw_wbuff_write(struct device *dev, struct device_attribute *attr, |
3187 | const char *buf, size_t count) | |
1da177e4 LT |
3188 | { |
3189 | struct claw_privbk *priv; | |
3190 | struct claw_env * p_env; | |
3191 | int nnn,max; | |
3192 | ||
dff59b64 | 3193 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3194 | if (!priv) |
3195 | return -ENODEV; | |
3196 | p_env = priv->p_env; | |
3197 | sscanf(buf, "%i", &nnn); | |
3198 | if (p_env->packing) { | |
3199 | max = 64; | |
3200 | } | |
3201 | else { | |
3202 | max = 512; | |
3203 | } | |
3204 | if ((nnn > max ) || (nnn < 2)) | |
3205 | return -EINVAL; | |
3206 | p_env->write_buffers = nnn; | |
b805da74 AR |
3207 | CLAW_DBF_TEXT(2, setup, "Wbufset"); |
3208 | CLAW_DBF_TEXT_(2, setup, "WB=%d", p_env->write_buffers); | |
1da177e4 LT |
3209 | return count; |
3210 | } | |
3211 | ||
3212 | static DEVICE_ATTR(write_buffer, 0644, claw_wbuff_show, claw_wbuff_write); | |
3213 | ||
3214 | static ssize_t | |
3fd3c0a5 | 3215 | claw_rbuff_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3216 | { |
3217 | struct claw_privbk *priv; | |
3218 | struct claw_env * p_env; | |
3219 | ||
dff59b64 | 3220 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3221 | if (!priv) |
3222 | return -ENODEV; | |
3223 | p_env = priv->p_env; | |
3224 | return sprintf(buf, "%d\n", p_env->read_buffers); | |
3225 | } | |
3226 | ||
3227 | static ssize_t | |
4811fcb7 AR |
3228 | claw_rbuff_write(struct device *dev, struct device_attribute *attr, |
3229 | 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 | ||
dff59b64 | 3235 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
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 | } | |
1da177e4 LT |
3253 | static DEVICE_ATTR(read_buffer, 0644, claw_rbuff_show, claw_rbuff_write); |
3254 | ||
3255 | static struct attribute *claw_attr[] = { | |
3256 | &dev_attr_read_buffer.attr, | |
3257 | &dev_attr_write_buffer.attr, | |
3258 | &dev_attr_adapter_name.attr, | |
3259 | &dev_attr_api_type.attr, | |
3260 | &dev_attr_host_name.attr, | |
3261 | NULL, | |
3262 | }; | |
1da177e4 LT |
3263 | static struct attribute_group claw_attr_group = { |
3264 | .attrs = claw_attr, | |
3265 | }; | |
2ced5514 SO |
3266 | static const struct attribute_group *claw_attr_groups[] = { |
3267 | &claw_attr_group, | |
3268 | NULL, | |
3269 | }; | |
3270 | static const struct device_type claw_devtype = { | |
3271 | .name = "claw", | |
3272 | .groups = claw_attr_groups, | |
3273 | }; | |
1da177e4 | 3274 | |
2ced5514 SO |
3275 | /*----------------------------------------------------------------* |
3276 | * claw_probe * | |
3277 | * this function is called for each CLAW device. * | |
3278 | *----------------------------------------------------------------*/ | |
3279 | static int claw_probe(struct ccwgroup_device *cgdev) | |
1da177e4 | 3280 | { |
2ced5514 | 3281 | struct claw_privbk *privptr = NULL; |
1da177e4 | 3282 | |
2ced5514 SO |
3283 | CLAW_DBF_TEXT(2, setup, "probe"); |
3284 | if (!get_device(&cgdev->dev)) | |
3285 | return -ENODEV; | |
3286 | privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL); | |
3287 | dev_set_drvdata(&cgdev->dev, privptr); | |
3288 | if (privptr == NULL) { | |
3289 | probe_error(cgdev); | |
3290 | put_device(&cgdev->dev); | |
3291 | CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); | |
3292 | return -ENOMEM; | |
3293 | } | |
3294 | privptr->p_mtc_envelope = kzalloc(MAX_ENVELOPE_SIZE, GFP_KERNEL); | |
3295 | privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL); | |
3296 | if ((privptr->p_mtc_envelope == NULL) || (privptr->p_env == NULL)) { | |
3297 | probe_error(cgdev); | |
3298 | put_device(&cgdev->dev); | |
3299 | CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); | |
3300 | return -ENOMEM; | |
3301 | } | |
3302 | memcpy(privptr->p_env->adapter_name, WS_NAME_NOT_DEF, 8); | |
3303 | memcpy(privptr->p_env->host_name, WS_NAME_NOT_DEF, 8); | |
3304 | memcpy(privptr->p_env->api_type, WS_NAME_NOT_DEF, 8); | |
3305 | privptr->p_env->packing = 0; | |
3306 | privptr->p_env->write_buffers = 5; | |
3307 | privptr->p_env->read_buffers = 5; | |
3308 | privptr->p_env->read_size = CLAW_FRAME_SIZE; | |
3309 | privptr->p_env->write_size = CLAW_FRAME_SIZE; | |
3310 | privptr->p_env->p_priv = privptr; | |
3311 | cgdev->cdev[0]->handler = claw_irq_handler; | |
3312 | cgdev->cdev[1]->handler = claw_irq_handler; | |
3313 | cgdev->dev.type = &claw_devtype; | |
3314 | CLAW_DBF_TEXT(2, setup, "prbext 0"); | |
3315 | ||
3316 | return 0; | |
3317 | } /* end of claw_probe */ | |
1da177e4 LT |
3318 | |
3319 | /*--------------------------------------------------------------------* | |
3320 | * claw_init and cleanup * | |
3321 | *---------------------------------------------------------------------*/ | |
3322 | ||
a43f8de6 | 3323 | static void __exit claw_cleanup(void) |
1da177e4 | 3324 | { |
0ca8cc6f UB |
3325 | ccwgroup_driver_unregister(&claw_group_driver); |
3326 | ccw_driver_unregister(&claw_ccw_driver); | |
3327 | root_device_unregister(claw_root_dev); | |
1da177e4 | 3328 | claw_unregister_debug_facility(); |
4811fcb7 | 3329 | pr_info("Driver unloaded\n"); |
1da177e4 LT |
3330 | } |
3331 | ||
3332 | /** | |
3333 | * Initialize module. | |
3334 | * This is called just after the module is loaded. | |
3335 | * | |
3336 | * @return 0 on success, !0 on error. | |
3337 | */ | |
a43f8de6 | 3338 | static int __init claw_init(void) |
1da177e4 LT |
3339 | { |
3340 | int ret = 0; | |
1da177e4 | 3341 | |
4811fcb7 | 3342 | pr_info("Loading %s\n", version); |
1da177e4 LT |
3343 | ret = claw_register_debug_facility(); |
3344 | if (ret) { | |
4811fcb7 AR |
3345 | pr_err("Registering with the S/390 debug feature" |
3346 | " failed with error code %d\n", ret); | |
0ca8cc6f | 3347 | goto out_err; |
1da177e4 | 3348 | } |
b805da74 | 3349 | CLAW_DBF_TEXT(2, setup, "init_mod"); |
d950d177 | 3350 | claw_root_dev = root_device_register("claw"); |
735e849f | 3351 | ret = PTR_RET(claw_root_dev); |
0ca8cc6f UB |
3352 | if (ret) |
3353 | goto register_err; | |
3354 | ret = ccw_driver_register(&claw_ccw_driver); | |
3355 | if (ret) | |
3356 | goto ccw_err; | |
a43f8de6 | 3357 | claw_group_driver.driver.groups = claw_drv_attr_groups; |
0ca8cc6f UB |
3358 | ret = ccwgroup_driver_register(&claw_group_driver); |
3359 | if (ret) | |
3360 | goto ccwgroup_err; | |
3361 | return 0; | |
3362 | ||
3363 | ccwgroup_err: | |
3364 | ccw_driver_unregister(&claw_ccw_driver); | |
3365 | ccw_err: | |
3366 | root_device_unregister(claw_root_dev); | |
3367 | register_err: | |
3368 | CLAW_DBF_TEXT(2, setup, "init_bad"); | |
3369 | claw_unregister_debug_facility(); | |
3370 | out_err: | |
3371 | pr_err("Initializing the claw device driver failed\n"); | |
1da177e4 LT |
3372 | return ret; |
3373 | } | |
3374 | ||
3375 | module_init(claw_init); | |
3376 | module_exit(claw_cleanup); | |
3377 | ||
b805da74 AR |
3378 | MODULE_AUTHOR("Andy Richter <richtera@us.ibm.com>"); |
3379 | MODULE_DESCRIPTION("Linux for System z CLAW Driver\n" \ | |
a53c8fab | 3380 | "Copyright IBM Corp. 2000, 2008\n"); |
b805da74 | 3381 | MODULE_LICENSE("GPL"); |