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Commit | Line | Data |
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1da177e4 LT |
1 | /* |
2 | * drivers/s390/net/claw.c | |
3 | * ESCON CLAW network driver | |
4 | * | |
8e84c801 | 5 | * Linux for zSeries version |
88efc2c5 | 6 | * Copyright IBM Corp. 2002, 2009 |
1da177e4 | 7 | * Author(s) Original code written by: |
88efc2c5 | 8 | * Kazuo Iimura <iimura@jp.ibm.com> |
1da177e4 | 9 | * Rewritten by |
88efc2c5 FB |
10 | * Andy Richter <richtera@us.ibm.com> |
11 | * Marc Price <mwprice@us.ibm.com> | |
1da177e4 LT |
12 | * |
13 | * sysfs parms: | |
14 | * group x.x.rrrr,x.x.wwww | |
15 | * read_buffer nnnnnnn | |
16 | * write_buffer nnnnnn | |
17 | * host_name aaaaaaaa | |
18 | * adapter_name aaaaaaaa | |
19 | * api_type aaaaaaaa | |
20 | * | |
21 | * eg. | |
22 | * group 0.0.0200 0.0.0201 | |
23 | * read_buffer 25 | |
24 | * write_buffer 20 | |
25 | * host_name LINUX390 | |
26 | * adapter_name RS6K | |
27 | * api_type TCPIP | |
28 | * | |
29 | * where | |
30 | * | |
31 | * The device id is decided by the order entries | |
32 | * are added to the group the first is claw0 the second claw1 | |
33 | * up to CLAW_MAX_DEV | |
34 | * | |
35 | * rrrr - the first of 2 consecutive device addresses used for the | |
36 | * CLAW protocol. | |
37 | * The specified address is always used as the input (Read) | |
38 | * channel and the next address is used as the output channel. | |
39 | * | |
40 | * wwww - the second of 2 consecutive device addresses used for | |
41 | * the CLAW protocol. | |
42 | * The specified address is always used as the output | |
43 | * channel and the previous address is used as the input channel. | |
44 | * | |
45 | * read_buffer - specifies number of input buffers to allocate. | |
46 | * write_buffer - specifies number of output buffers to allocate. | |
47 | * host_name - host name | |
48 | * adaptor_name - adaptor name | |
49 | * api_type - API type TCPIP or API will be sent and expected | |
50 | * as ws_name | |
51 | * | |
52 | * Note the following requirements: | |
53 | * 1) host_name must match the configured adapter_name on the remote side | |
54 | * 2) adaptor_name must match the configured host name on the remote side | |
55 | * | |
56 | * Change History | |
57 | * 1.00 Initial release shipped | |
58 | * 1.10 Changes for Buffer allocation | |
59 | * 1.15 Changed for 2.6 Kernel No longer compiles on 2.4 or lower | |
60 | * 1.25 Added Packing support | |
b805da74 | 61 | * 1.5 |
1da177e4 | 62 | */ |
4811fcb7 AR |
63 | |
64 | #define KMSG_COMPONENT "claw" | |
65 | ||
355eb402 | 66 | #include <linux/kernel_stat.h> |
1da177e4 LT |
67 | #include <asm/ccwdev.h> |
68 | #include <asm/ccwgroup.h> | |
69 | #include <asm/debug.h> | |
70 | #include <asm/idals.h> | |
71 | #include <asm/io.h> | |
1977f032 | 72 | #include <linux/bitops.h> |
1da177e4 LT |
73 | #include <linux/ctype.h> |
74 | #include <linux/delay.h> | |
75 | #include <linux/errno.h> | |
76 | #include <linux/if_arp.h> | |
77 | #include <linux/init.h> | |
78 | #include <linux/interrupt.h> | |
79 | #include <linux/ip.h> | |
80 | #include <linux/kernel.h> | |
81 | #include <linux/module.h> | |
82 | #include <linux/netdevice.h> | |
83 | #include <linux/etherdevice.h> | |
84 | #include <linux/proc_fs.h> | |
85 | #include <linux/sched.h> | |
86 | #include <linux/signal.h> | |
87 | #include <linux/skbuff.h> | |
88 | #include <linux/slab.h> | |
89 | #include <linux/string.h> | |
90 | #include <linux/tcp.h> | |
91 | #include <linux/timer.h> | |
92 | #include <linux/types.h> | |
1da177e4 | 93 | |
1da177e4 LT |
94 | #include "claw.h" |
95 | ||
b805da74 AR |
96 | /* |
97 | CLAW uses the s390dbf file system see claw_trace and claw_setup | |
1da177e4 LT |
98 | */ |
99 | ||
4811fcb7 | 100 | static char version[] __initdata = "CLAW driver"; |
2b67fc46 | 101 | static char debug_buffer[255]; |
1da177e4 LT |
102 | /** |
103 | * Debug Facility Stuff | |
104 | */ | |
105 | static debug_info_t *claw_dbf_setup; | |
106 | static debug_info_t *claw_dbf_trace; | |
107 | ||
108 | /** | |
109 | * CLAW Debug Facility functions | |
110 | */ | |
111 | static void | |
112 | claw_unregister_debug_facility(void) | |
113 | { | |
114 | if (claw_dbf_setup) | |
115 | debug_unregister(claw_dbf_setup); | |
116 | if (claw_dbf_trace) | |
117 | debug_unregister(claw_dbf_trace); | |
118 | } | |
119 | ||
120 | static int | |
121 | claw_register_debug_facility(void) | |
122 | { | |
66a464db MH |
123 | claw_dbf_setup = debug_register("claw_setup", 2, 1, 8); |
124 | claw_dbf_trace = debug_register("claw_trace", 2, 2, 8); | |
1da177e4 | 125 | if (claw_dbf_setup == NULL || claw_dbf_trace == NULL) { |
1da177e4 LT |
126 | claw_unregister_debug_facility(); |
127 | return -ENOMEM; | |
128 | } | |
129 | debug_register_view(claw_dbf_setup, &debug_hex_ascii_view); | |
130 | debug_set_level(claw_dbf_setup, 2); | |
131 | debug_register_view(claw_dbf_trace, &debug_hex_ascii_view); | |
132 | debug_set_level(claw_dbf_trace, 2); | |
133 | return 0; | |
134 | } | |
135 | ||
136 | static inline void | |
137 | claw_set_busy(struct net_device *dev) | |
138 | { | |
6951df34 | 139 | ((struct claw_privbk *)dev->ml_priv)->tbusy = 1; |
1da177e4 LT |
140 | eieio(); |
141 | } | |
142 | ||
143 | static inline void | |
144 | claw_clear_busy(struct net_device *dev) | |
145 | { | |
6951df34 | 146 | clear_bit(0, &(((struct claw_privbk *) dev->ml_priv)->tbusy)); |
1da177e4 LT |
147 | netif_wake_queue(dev); |
148 | eieio(); | |
149 | } | |
150 | ||
151 | static inline int | |
152 | claw_check_busy(struct net_device *dev) | |
153 | { | |
154 | eieio(); | |
6951df34 | 155 | return ((struct claw_privbk *) dev->ml_priv)->tbusy; |
1da177e4 LT |
156 | } |
157 | ||
158 | static inline void | |
159 | claw_setbit_busy(int nr,struct net_device *dev) | |
160 | { | |
161 | netif_stop_queue(dev); | |
6951df34 | 162 | set_bit(nr, (void *)&(((struct claw_privbk *)dev->ml_priv)->tbusy)); |
1da177e4 LT |
163 | } |
164 | ||
165 | static inline void | |
166 | claw_clearbit_busy(int nr,struct net_device *dev) | |
167 | { | |
6951df34 | 168 | clear_bit(nr, (void *)&(((struct claw_privbk *)dev->ml_priv)->tbusy)); |
1da177e4 LT |
169 | netif_wake_queue(dev); |
170 | } | |
171 | ||
172 | static inline int | |
173 | claw_test_and_setbit_busy(int nr,struct net_device *dev) | |
174 | { | |
175 | netif_stop_queue(dev); | |
176 | return test_and_set_bit(nr, | |
6951df34 | 177 | (void *)&(((struct claw_privbk *) dev->ml_priv)->tbusy)); |
1da177e4 LT |
178 | } |
179 | ||
180 | ||
181 | /* Functions for the DEV methods */ | |
182 | ||
183 | static int claw_probe(struct ccwgroup_device *cgdev); | |
184 | static void claw_remove_device(struct ccwgroup_device *cgdev); | |
185 | static void claw_purge_skb_queue(struct sk_buff_head *q); | |
186 | static int claw_new_device(struct ccwgroup_device *cgdev); | |
187 | static int claw_shutdown_device(struct ccwgroup_device *cgdev); | |
188 | static int claw_tx(struct sk_buff *skb, struct net_device *dev); | |
189 | static int claw_change_mtu( struct net_device *dev, int new_mtu); | |
190 | static int claw_open(struct net_device *dev); | |
191 | static void claw_irq_handler(struct ccw_device *cdev, | |
192 | unsigned long intparm, struct irb *irb); | |
193 | static void claw_irq_tasklet ( unsigned long data ); | |
194 | static int claw_release(struct net_device *dev); | |
195 | static void claw_write_retry ( struct chbk * p_ch ); | |
196 | static void claw_write_next ( struct chbk * p_ch ); | |
197 | static void claw_timer ( struct chbk * p_ch ); | |
198 | ||
199 | /* Functions */ | |
200 | static int add_claw_reads(struct net_device *dev, | |
201 | struct ccwbk* p_first, struct ccwbk* p_last); | |
4d284cac HC |
202 | static void ccw_check_return_code (struct ccw_device *cdev, int return_code); |
203 | static void ccw_check_unit_check (struct chbk * p_ch, unsigned char sense ); | |
1da177e4 LT |
204 | static int find_link(struct net_device *dev, char *host_name, char *ws_name ); |
205 | static int claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid); | |
206 | static int init_ccw_bk(struct net_device *dev); | |
207 | static void probe_error( struct ccwgroup_device *cgdev); | |
208 | static struct net_device_stats *claw_stats(struct net_device *dev); | |
4d284cac | 209 | static int pages_to_order_of_mag(int num_of_pages); |
1da177e4 | 210 | static struct sk_buff *claw_pack_skb(struct claw_privbk *privptr); |
1da177e4 | 211 | /* sysfs Functions */ |
4811fcb7 AR |
212 | static ssize_t claw_hname_show(struct device *dev, |
213 | struct device_attribute *attr, char *buf); | |
214 | static ssize_t claw_hname_write(struct device *dev, | |
215 | struct device_attribute *attr, | |
1da177e4 | 216 | const char *buf, size_t count); |
4811fcb7 AR |
217 | static ssize_t claw_adname_show(struct device *dev, |
218 | struct device_attribute *attr, char *buf); | |
219 | static ssize_t claw_adname_write(struct device *dev, | |
220 | struct device_attribute *attr, | |
1da177e4 | 221 | const char *buf, size_t count); |
4811fcb7 AR |
222 | static ssize_t claw_apname_show(struct device *dev, |
223 | struct device_attribute *attr, char *buf); | |
224 | static ssize_t claw_apname_write(struct device *dev, | |
225 | struct device_attribute *attr, | |
1da177e4 | 226 | const char *buf, size_t count); |
4811fcb7 AR |
227 | static ssize_t claw_wbuff_show(struct device *dev, |
228 | struct device_attribute *attr, char *buf); | |
229 | static ssize_t claw_wbuff_write(struct device *dev, | |
230 | struct device_attribute *attr, | |
1da177e4 | 231 | const char *buf, size_t count); |
4811fcb7 AR |
232 | static ssize_t claw_rbuff_show(struct device *dev, |
233 | struct device_attribute *attr, char *buf); | |
234 | static ssize_t claw_rbuff_write(struct device *dev, | |
235 | struct device_attribute *attr, | |
1da177e4 LT |
236 | const char *buf, size_t count); |
237 | static int claw_add_files(struct device *dev); | |
238 | static void claw_remove_files(struct device *dev); | |
239 | ||
240 | /* Functions for System Validate */ | |
241 | static int claw_process_control( struct net_device *dev, struct ccwbk * p_ccw); | |
242 | static int claw_send_control(struct net_device *dev, __u8 type, __u8 link, | |
243 | __u8 correlator, __u8 rc , char *local_name, char *remote_name); | |
244 | static int claw_snd_conn_req(struct net_device *dev, __u8 link); | |
245 | static int claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl); | |
246 | static int claw_snd_sys_validate_rsp(struct net_device *dev, | |
247 | struct clawctl * p_ctl, __u32 return_code); | |
248 | static int claw_strt_conn_req(struct net_device *dev ); | |
b805da74 AR |
249 | static void claw_strt_read(struct net_device *dev, int lock); |
250 | static void claw_strt_out_IO(struct net_device *dev); | |
251 | static void claw_free_wrt_buf(struct net_device *dev); | |
1da177e4 LT |
252 | |
253 | /* Functions for unpack reads */ | |
b805da74 | 254 | static void unpack_read(struct net_device *dev); |
1da177e4 | 255 | |
88efc2c5 FB |
256 | static int claw_pm_prepare(struct ccwgroup_device *gdev) |
257 | { | |
258 | return -EPERM; | |
259 | } | |
260 | ||
0ca8cc6f UB |
261 | /* the root device for claw group devices */ |
262 | static struct device *claw_root_dev; | |
263 | ||
1da177e4 LT |
264 | /* ccwgroup table */ |
265 | ||
266 | static struct ccwgroup_driver claw_group_driver = { | |
3c190c51 SO |
267 | .driver = { |
268 | .owner = THIS_MODULE, | |
269 | .name = "claw", | |
270 | }, | |
1da177e4 LT |
271 | .max_slaves = 2, |
272 | .driver_id = 0xC3D3C1E6, | |
273 | .probe = claw_probe, | |
274 | .remove = claw_remove_device, | |
275 | .set_online = claw_new_device, | |
276 | .set_offline = claw_shutdown_device, | |
88efc2c5 | 277 | .prepare = claw_pm_prepare, |
1da177e4 LT |
278 | }; |
279 | ||
0ca8cc6f UB |
280 | static struct ccw_device_id claw_ids[] = { |
281 | {CCW_DEVICE(0x3088, 0x61), .driver_info = claw_channel_type_claw}, | |
282 | {}, | |
283 | }; | |
284 | MODULE_DEVICE_TABLE(ccw, claw_ids); | |
285 | ||
286 | static struct ccw_driver claw_ccw_driver = { | |
3bda058b SO |
287 | .driver = { |
288 | .owner = THIS_MODULE, | |
289 | .name = "claw", | |
290 | }, | |
0ca8cc6f UB |
291 | .ids = claw_ids, |
292 | .probe = ccwgroup_probe_ccwdev, | |
293 | .remove = ccwgroup_remove_ccwdev, | |
294 | }; | |
295 | ||
296 | static ssize_t | |
297 | claw_driver_group_store(struct device_driver *ddrv, const char *buf, | |
298 | size_t count) | |
299 | { | |
300 | int err; | |
301 | err = ccwgroup_create_from_string(claw_root_dev, | |
302 | claw_group_driver.driver_id, | |
e48d24a6 | 303 | &claw_ccw_driver, 2, buf); |
0ca8cc6f UB |
304 | return err ? err : count; |
305 | } | |
306 | ||
307 | static DRIVER_ATTR(group, 0200, NULL, claw_driver_group_store); | |
308 | ||
309 | static struct attribute *claw_group_attrs[] = { | |
310 | &driver_attr_group.attr, | |
311 | NULL, | |
312 | }; | |
313 | ||
314 | static struct attribute_group claw_group_attr_group = { | |
315 | .attrs = claw_group_attrs, | |
316 | }; | |
317 | ||
302689ac | 318 | static const struct attribute_group *claw_group_attr_groups[] = { |
0ca8cc6f UB |
319 | &claw_group_attr_group, |
320 | NULL, | |
321 | }; | |
322 | ||
1da177e4 | 323 | /* |
1da177e4 LT |
324 | * Key functions |
325 | */ | |
326 | ||
327 | /*----------------------------------------------------------------* | |
328 | * claw_probe * | |
329 | * this function is called for each CLAW device. * | |
330 | *----------------------------------------------------------------*/ | |
331 | static int | |
332 | claw_probe(struct ccwgroup_device *cgdev) | |
333 | { | |
334 | int rc; | |
335 | struct claw_privbk *privptr=NULL; | |
336 | ||
b805da74 | 337 | CLAW_DBF_TEXT(2, setup, "probe"); |
1da177e4 LT |
338 | if (!get_device(&cgdev->dev)) |
339 | return -ENODEV; | |
88abaab4 | 340 | privptr = kzalloc(sizeof(struct claw_privbk), GFP_KERNEL); |
dff59b64 | 341 | dev_set_drvdata(&cgdev->dev, privptr); |
1da177e4 LT |
342 | if (privptr == NULL) { |
343 | probe_error(cgdev); | |
344 | put_device(&cgdev->dev); | |
b805da74 | 345 | CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); |
1da177e4 LT |
346 | return -ENOMEM; |
347 | } | |
dd00cc48 YP |
348 | privptr->p_mtc_envelope= kzalloc( MAX_ENVELOPE_SIZE, GFP_KERNEL); |
349 | privptr->p_env = kzalloc(sizeof(struct claw_env), GFP_KERNEL); | |
1da177e4 LT |
350 | if ((privptr->p_mtc_envelope==NULL) || (privptr->p_env==NULL)) { |
351 | probe_error(cgdev); | |
352 | put_device(&cgdev->dev); | |
b805da74 | 353 | CLAW_DBF_TEXT_(2, setup, "probex%d", -ENOMEM); |
1da177e4 LT |
354 | return -ENOMEM; |
355 | } | |
1da177e4 LT |
356 | memcpy(privptr->p_env->adapter_name,WS_NAME_NOT_DEF,8); |
357 | memcpy(privptr->p_env->host_name,WS_NAME_NOT_DEF,8); | |
358 | memcpy(privptr->p_env->api_type,WS_NAME_NOT_DEF,8); | |
359 | privptr->p_env->packing = 0; | |
360 | privptr->p_env->write_buffers = 5; | |
361 | privptr->p_env->read_buffers = 5; | |
362 | privptr->p_env->read_size = CLAW_FRAME_SIZE; | |
363 | privptr->p_env->write_size = CLAW_FRAME_SIZE; | |
364 | rc = claw_add_files(&cgdev->dev); | |
365 | if (rc) { | |
366 | probe_error(cgdev); | |
367 | put_device(&cgdev->dev); | |
4811fcb7 AR |
368 | dev_err(&cgdev->dev, "Creating the /proc files for a new" |
369 | " CLAW device failed\n"); | |
b805da74 | 370 | CLAW_DBF_TEXT_(2, setup, "probex%d", rc); |
1da177e4 LT |
371 | return rc; |
372 | } | |
1da177e4 LT |
373 | privptr->p_env->p_priv = privptr; |
374 | cgdev->cdev[0]->handler = claw_irq_handler; | |
375 | cgdev->cdev[1]->handler = claw_irq_handler; | |
b805da74 | 376 | CLAW_DBF_TEXT(2, setup, "prbext 0"); |
1da177e4 LT |
377 | |
378 | return 0; | |
379 | } /* end of claw_probe */ | |
380 | ||
381 | /*-------------------------------------------------------------------* | |
382 | * claw_tx * | |
383 | *-------------------------------------------------------------------*/ | |
384 | ||
385 | static int | |
386 | claw_tx(struct sk_buff *skb, struct net_device *dev) | |
387 | { | |
388 | int rc; | |
6951df34 | 389 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 LT |
390 | unsigned long saveflags; |
391 | struct chbk *p_ch; | |
392 | ||
b805da74 | 393 | CLAW_DBF_TEXT(4, trace, "claw_tx"); |
319cb083 | 394 | p_ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
395 | spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags); |
396 | rc=claw_hw_tx( skb, dev, 1 ); | |
397 | spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags); | |
b805da74 | 398 | CLAW_DBF_TEXT_(4, trace, "clawtx%d", rc); |
8f0c40d4 UB |
399 | if (rc) |
400 | rc = NETDEV_TX_BUSY; | |
ec634fe3 PM |
401 | else |
402 | rc = NETDEV_TX_OK; | |
1da177e4 LT |
403 | return rc; |
404 | } /* end of claw_tx */ | |
405 | ||
406 | /*------------------------------------------------------------------* | |
407 | * pack the collect queue into an skb and return it * | |
408 | * If not packing just return the top skb from the queue * | |
409 | *------------------------------------------------------------------*/ | |
410 | ||
411 | static struct sk_buff * | |
412 | claw_pack_skb(struct claw_privbk *privptr) | |
413 | { | |
414 | struct sk_buff *new_skb,*held_skb; | |
319cb083 | 415 | struct chbk *p_ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
416 | struct claw_env *p_env = privptr->p_env; |
417 | int pkt_cnt,pk_ind,so_far; | |
418 | ||
419 | new_skb = NULL; /* assume no dice */ | |
420 | pkt_cnt = 0; | |
b805da74 | 421 | CLAW_DBF_TEXT(4, trace, "PackSKBe"); |
b03efcfb | 422 | if (!skb_queue_empty(&p_ch->collect_queue)) { |
1da177e4 LT |
423 | /* some data */ |
424 | held_skb = skb_dequeue(&p_ch->collect_queue); | |
1da177e4 | 425 | if (held_skb) |
8e84c801 | 426 | dev_kfree_skb_any(held_skb); |
1da177e4 LT |
427 | else |
428 | return NULL; | |
8e84c801 FP |
429 | if (p_env->packing != DO_PACKED) |
430 | return held_skb; | |
1da177e4 LT |
431 | /* get a new SKB we will pack at least one */ |
432 | new_skb = dev_alloc_skb(p_env->write_size); | |
433 | if (new_skb == NULL) { | |
434 | atomic_inc(&held_skb->users); | |
435 | skb_queue_head(&p_ch->collect_queue,held_skb); | |
436 | return NULL; | |
437 | } | |
438 | /* we have packed packet and a place to put it */ | |
439 | pk_ind = 1; | |
440 | so_far = 0; | |
441 | new_skb->cb[1] = 'P'; /* every skb on queue has pack header */ | |
442 | while ((pk_ind) && (held_skb != NULL)) { | |
443 | if (held_skb->len+so_far <= p_env->write_size-8) { | |
444 | memcpy(skb_put(new_skb,held_skb->len), | |
445 | held_skb->data,held_skb->len); | |
446 | privptr->stats.tx_packets++; | |
447 | so_far += held_skb->len; | |
448 | pkt_cnt++; | |
8e84c801 | 449 | dev_kfree_skb_any(held_skb); |
1da177e4 LT |
450 | held_skb = skb_dequeue(&p_ch->collect_queue); |
451 | if (held_skb) | |
452 | atomic_dec(&held_skb->users); | |
453 | } else { | |
454 | pk_ind = 0; | |
455 | atomic_inc(&held_skb->users); | |
456 | skb_queue_head(&p_ch->collect_queue,held_skb); | |
457 | } | |
458 | } | |
1da177e4 | 459 | } |
b805da74 | 460 | CLAW_DBF_TEXT(4, trace, "PackSKBx"); |
1da177e4 LT |
461 | return new_skb; |
462 | } | |
463 | ||
464 | /*-------------------------------------------------------------------* | |
465 | * claw_change_mtu * | |
466 | * * | |
467 | *-------------------------------------------------------------------*/ | |
468 | ||
469 | static int | |
470 | claw_change_mtu(struct net_device *dev, int new_mtu) | |
471 | { | |
6951df34 | 472 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 | 473 | int buff_size; |
b805da74 | 474 | CLAW_DBF_TEXT(4, trace, "setmtu"); |
1da177e4 LT |
475 | buff_size = privptr->p_env->write_size; |
476 | if ((new_mtu < 60) || (new_mtu > buff_size)) { | |
1da177e4 LT |
477 | return -EINVAL; |
478 | } | |
479 | dev->mtu = new_mtu; | |
1da177e4 LT |
480 | return 0; |
481 | } /* end of claw_change_mtu */ | |
482 | ||
483 | ||
484 | /*-------------------------------------------------------------------* | |
485 | * claw_open * | |
486 | * * | |
487 | *-------------------------------------------------------------------*/ | |
488 | static int | |
489 | claw_open(struct net_device *dev) | |
490 | { | |
491 | ||
492 | int rc; | |
493 | int i; | |
494 | unsigned long saveflags=0; | |
495 | unsigned long parm; | |
496 | struct claw_privbk *privptr; | |
497 | DECLARE_WAITQUEUE(wait, current); | |
498 | struct timer_list timer; | |
499 | struct ccwbk *p_buf; | |
500 | ||
b805da74 | 501 | CLAW_DBF_TEXT(4, trace, "open"); |
6951df34 | 502 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
503 | /* allocate and initialize CCW blocks */ |
504 | if (privptr->buffs_alloc == 0) { | |
505 | rc=init_ccw_bk(dev); | |
506 | if (rc) { | |
b805da74 | 507 | CLAW_DBF_TEXT(2, trace, "openmem"); |
1da177e4 LT |
508 | return -ENOMEM; |
509 | } | |
510 | } | |
511 | privptr->system_validate_comp=0; | |
512 | privptr->release_pend=0; | |
513 | if(strncmp(privptr->p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
514 | privptr->p_env->read_size=DEF_PACK_BUFSIZE; | |
515 | privptr->p_env->write_size=DEF_PACK_BUFSIZE; | |
516 | privptr->p_env->packing=PACKING_ASK; | |
517 | } else { | |
518 | privptr->p_env->packing=0; | |
519 | privptr->p_env->read_size=CLAW_FRAME_SIZE; | |
520 | privptr->p_env->write_size=CLAW_FRAME_SIZE; | |
521 | } | |
522 | claw_set_busy(dev); | |
319cb083 HC |
523 | tasklet_init(&privptr->channel[READ_CHANNEL].tasklet, claw_irq_tasklet, |
524 | (unsigned long) &privptr->channel[READ_CHANNEL]); | |
1da177e4 | 525 | for ( i = 0; i < 2; i++) { |
b805da74 | 526 | CLAW_DBF_TEXT_(2, trace, "opn_ch%d", i); |
1da177e4 LT |
527 | init_waitqueue_head(&privptr->channel[i].wait); |
528 | /* skb_queue_head_init(&p_ch->io_queue); */ | |
319cb083 | 529 | if (i == WRITE_CHANNEL) |
1da177e4 | 530 | skb_queue_head_init( |
319cb083 | 531 | &privptr->channel[WRITE_CHANNEL].collect_queue); |
1da177e4 LT |
532 | privptr->channel[i].flag_a = 0; |
533 | privptr->channel[i].IO_active = 0; | |
534 | privptr->channel[i].flag &= ~CLAW_TIMER; | |
535 | init_timer(&timer); | |
536 | timer.function = (void *)claw_timer; | |
537 | timer.data = (unsigned long)(&privptr->channel[i]); | |
538 | timer.expires = jiffies + 15*HZ; | |
539 | add_timer(&timer); | |
540 | spin_lock_irqsave(get_ccwdev_lock( | |
541 | privptr->channel[i].cdev), saveflags); | |
542 | parm = (unsigned long) &privptr->channel[i]; | |
543 | privptr->channel[i].claw_state = CLAW_START_HALT_IO; | |
544 | rc = 0; | |
545 | add_wait_queue(&privptr->channel[i].wait, &wait); | |
546 | rc = ccw_device_halt( | |
547 | (struct ccw_device *)privptr->channel[i].cdev,parm); | |
548 | set_current_state(TASK_INTERRUPTIBLE); | |
549 | spin_unlock_irqrestore( | |
550 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
551 | schedule(); | |
552 | set_current_state(TASK_RUNNING); | |
553 | remove_wait_queue(&privptr->channel[i].wait, &wait); | |
554 | if(rc != 0) | |
555 | ccw_check_return_code(privptr->channel[i].cdev, rc); | |
556 | if((privptr->channel[i].flag & CLAW_TIMER) == 0x00) | |
557 | del_timer(&timer); | |
558 | } | |
319cb083 HC |
559 | if ((((privptr->channel[READ_CHANNEL].last_dstat | |
560 | privptr->channel[WRITE_CHANNEL].last_dstat) & | |
1da177e4 | 561 | ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) || |
319cb083 HC |
562 | (((privptr->channel[READ_CHANNEL].flag | |
563 | privptr->channel[WRITE_CHANNEL].flag) & CLAW_TIMER) != 0x00)) { | |
564 | dev_info(&privptr->channel[READ_CHANNEL].cdev->dev, | |
4811fcb7 | 565 | "%s: remote side is not ready\n", dev->name); |
b805da74 | 566 | CLAW_DBF_TEXT(2, trace, "notrdy"); |
1da177e4 LT |
567 | |
568 | for ( i = 0; i < 2; i++) { | |
569 | spin_lock_irqsave( | |
570 | get_ccwdev_lock(privptr->channel[i].cdev), | |
571 | saveflags); | |
572 | parm = (unsigned long) &privptr->channel[i]; | |
573 | privptr->channel[i].claw_state = CLAW_STOP; | |
574 | rc = ccw_device_halt( | |
575 | (struct ccw_device *)&privptr->channel[i].cdev, | |
576 | parm); | |
577 | spin_unlock_irqrestore( | |
578 | get_ccwdev_lock(privptr->channel[i].cdev), | |
579 | saveflags); | |
580 | if (rc != 0) { | |
581 | ccw_check_return_code( | |
582 | privptr->channel[i].cdev, rc); | |
583 | } | |
584 | } | |
585 | free_pages((unsigned long)privptr->p_buff_ccw, | |
586 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
587 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
588 | free_pages((unsigned long)privptr->p_buff_read, | |
589 | (int)pages_to_order_of_mag( | |
590 | privptr->p_buff_read_num)); | |
591 | } | |
592 | else { | |
593 | p_buf=privptr->p_read_active_first; | |
594 | while (p_buf!=NULL) { | |
595 | free_pages((unsigned long)p_buf->p_buffer, | |
596 | (int)pages_to_order_of_mag( | |
597 | privptr->p_buff_pages_perread )); | |
598 | p_buf=p_buf->next; | |
599 | } | |
600 | } | |
601 | if (privptr->p_env->write_size < PAGE_SIZE ) { | |
602 | free_pages((unsigned long)privptr->p_buff_write, | |
603 | (int)pages_to_order_of_mag( | |
604 | privptr->p_buff_write_num)); | |
605 | } | |
606 | else { | |
607 | p_buf=privptr->p_write_active_first; | |
608 | while (p_buf!=NULL) { | |
609 | free_pages((unsigned long)p_buf->p_buffer, | |
610 | (int)pages_to_order_of_mag( | |
611 | privptr->p_buff_pages_perwrite )); | |
612 | p_buf=p_buf->next; | |
613 | } | |
614 | } | |
615 | privptr->buffs_alloc = 0; | |
319cb083 HC |
616 | privptr->channel[READ_CHANNEL].flag = 0x00; |
617 | privptr->channel[WRITE_CHANNEL].flag = 0x00; | |
1da177e4 LT |
618 | privptr->p_buff_ccw=NULL; |
619 | privptr->p_buff_read=NULL; | |
620 | privptr->p_buff_write=NULL; | |
621 | claw_clear_busy(dev); | |
b805da74 | 622 | CLAW_DBF_TEXT(2, trace, "open EIO"); |
1da177e4 LT |
623 | return -EIO; |
624 | } | |
625 | ||
626 | /* Send SystemValidate command */ | |
627 | ||
628 | claw_clear_busy(dev); | |
b805da74 | 629 | CLAW_DBF_TEXT(4, trace, "openok"); |
1da177e4 LT |
630 | return 0; |
631 | } /* end of claw_open */ | |
632 | ||
633 | /*-------------------------------------------------------------------* | |
634 | * * | |
635 | * claw_irq_handler * | |
636 | * * | |
637 | *--------------------------------------------------------------------*/ | |
638 | static void | |
639 | claw_irq_handler(struct ccw_device *cdev, | |
640 | unsigned long intparm, struct irb *irb) | |
641 | { | |
642 | struct chbk *p_ch = NULL; | |
643 | struct claw_privbk *privptr = NULL; | |
644 | struct net_device *dev = NULL; | |
645 | struct claw_env *p_env; | |
646 | struct chbk *p_ch_r=NULL; | |
647 | ||
355eb402 | 648 | kstat_cpu(smp_processor_id()).irqs[IOINT_CLW]++; |
b805da74 | 649 | CLAW_DBF_TEXT(4, trace, "clawirq"); |
1da177e4 | 650 | /* Bypass all 'unsolicited interrupts' */ |
dff59b64 GKH |
651 | privptr = dev_get_drvdata(&cdev->dev); |
652 | if (!privptr) { | |
4811fcb7 AR |
653 | dev_warn(&cdev->dev, "An uninitialized CLAW device received an" |
654 | " IRQ, c-%02x d-%02x\n", | |
655 | irb->scsw.cmd.cstat, irb->scsw.cmd.dstat); | |
b805da74 | 656 | CLAW_DBF_TEXT(2, trace, "badirq"); |
1da177e4 LT |
657 | return; |
658 | } | |
1da177e4 LT |
659 | |
660 | /* Try to extract channel from driver data. */ | |
319cb083 HC |
661 | if (privptr->channel[READ_CHANNEL].cdev == cdev) |
662 | p_ch = &privptr->channel[READ_CHANNEL]; | |
663 | else if (privptr->channel[WRITE_CHANNEL].cdev == cdev) | |
664 | p_ch = &privptr->channel[WRITE_CHANNEL]; | |
1da177e4 | 665 | else { |
4811fcb7 | 666 | dev_warn(&cdev->dev, "The device is not a CLAW device\n"); |
b805da74 | 667 | CLAW_DBF_TEXT(2, trace, "badchan"); |
1da177e4 LT |
668 | return; |
669 | } | |
b805da74 | 670 | CLAW_DBF_TEXT_(4, trace, "IRQCH=%d", p_ch->flag); |
1da177e4 LT |
671 | |
672 | dev = (struct net_device *) (p_ch->ndev); | |
673 | p_env=privptr->p_env; | |
674 | ||
1da177e4 LT |
675 | /* Copy interruption response block. */ |
676 | memcpy(p_ch->irb, irb, sizeof(struct irb)); | |
677 | ||
b805da74 | 678 | /* Check for good subchannel return code, otherwise info message */ |
23d805b6 | 679 | if (irb->scsw.cmd.cstat && !(irb->scsw.cmd.cstat & SCHN_STAT_PCI)) { |
4811fcb7 AR |
680 | dev_info(&cdev->dev, |
681 | "%s: subchannel check for device: %04x -" | |
1da177e4 LT |
682 | " Sch Stat %02x Dev Stat %02x CPA - %04x\n", |
683 | dev->name, p_ch->devno, | |
23d805b6 PO |
684 | irb->scsw.cmd.cstat, irb->scsw.cmd.dstat, |
685 | irb->scsw.cmd.cpa); | |
b805da74 | 686 | CLAW_DBF_TEXT(2, trace, "chanchk"); |
1da177e4 LT |
687 | /* return; */ |
688 | } | |
689 | ||
690 | /* Check the reason-code of a unit check */ | |
23d805b6 | 691 | if (irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) |
1da177e4 | 692 | ccw_check_unit_check(p_ch, irb->ecw[0]); |
1da177e4 LT |
693 | |
694 | /* State machine to bring the connection up, down and to restart */ | |
23d805b6 | 695 | p_ch->last_dstat = irb->scsw.cmd.dstat; |
1da177e4 LT |
696 | |
697 | switch (p_ch->claw_state) { | |
b805da74 AR |
698 | case CLAW_STOP:/* HALT_IO by claw_release (halt sequence) */ |
699 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
700 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
701 | (p_ch->irb->scsw.cmd.stctl == | |
702 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) | |
703 | return; | |
704 | wake_up(&p_ch->wait); /* wake up claw_release */ | |
705 | CLAW_DBF_TEXT(4, trace, "stop"); | |
706 | return; | |
707 | case CLAW_START_HALT_IO: /* HALT_IO issued by claw_open */ | |
708 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
709 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
710 | (p_ch->irb->scsw.cmd.stctl == | |
711 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
712 | CLAW_DBF_TEXT(4, trace, "haltio"); | |
713 | return; | |
714 | } | |
715 | if (p_ch->flag == CLAW_READ) { | |
716 | p_ch->claw_state = CLAW_START_READ; | |
717 | wake_up(&p_ch->wait); /* wake claw_open (READ)*/ | |
718 | } else if (p_ch->flag == CLAW_WRITE) { | |
719 | p_ch->claw_state = CLAW_START_WRITE; | |
4811fcb7 | 720 | /* send SYSTEM_VALIDATE */ |
b805da74 AR |
721 | claw_strt_read(dev, LOCK_NO); |
722 | claw_send_control(dev, | |
723 | SYSTEM_VALIDATE_REQUEST, | |
724 | 0, 0, 0, | |
725 | p_env->host_name, | |
726 | p_env->adapter_name); | |
727 | } else { | |
4811fcb7 AR |
728 | dev_warn(&cdev->dev, "The CLAW device received" |
729 | " an unexpected IRQ, " | |
730 | "c-%02x d-%02x\n", | |
b805da74 AR |
731 | irb->scsw.cmd.cstat, |
732 | irb->scsw.cmd.dstat); | |
733 | return; | |
734 | } | |
735 | CLAW_DBF_TEXT(4, trace, "haltio"); | |
736 | return; | |
737 | case CLAW_START_READ: | |
738 | CLAW_DBF_TEXT(4, trace, "ReadIRQ"); | |
739 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { | |
740 | clear_bit(0, (void *)&p_ch->IO_active); | |
741 | if ((p_ch->irb->ecw[0] & 0x41) == 0x41 || | |
742 | (p_ch->irb->ecw[0] & 0x40) == 0x40 || | |
743 | (p_ch->irb->ecw[0]) == 0) { | |
744 | privptr->stats.rx_errors++; | |
4811fcb7 AR |
745 | dev_info(&cdev->dev, |
746 | "%s: Restart is required after remote " | |
b805da74 AR |
747 | "side recovers \n", |
748 | dev->name); | |
749 | } | |
750 | CLAW_DBF_TEXT(4, trace, "notrdy"); | |
751 | return; | |
752 | } | |
753 | if ((p_ch->irb->scsw.cmd.cstat & SCHN_STAT_PCI) && | |
754 | (p_ch->irb->scsw.cmd.dstat == 0)) { | |
755 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
756 | (void *)&p_ch->flag_a) == 0) | |
757 | tasklet_schedule(&p_ch->tasklet); | |
1da177e4 | 758 | else |
b805da74 AR |
759 | CLAW_DBF_TEXT(4, trace, "PCINoBH"); |
760 | CLAW_DBF_TEXT(4, trace, "PCI_read"); | |
761 | return; | |
762 | } | |
763 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
764 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
765 | (p_ch->irb->scsw.cmd.stctl == | |
766 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
767 | CLAW_DBF_TEXT(4, trace, "SPend_rd"); | |
768 | return; | |
769 | } | |
770 | clear_bit(0, (void *)&p_ch->IO_active); | |
771 | claw_clearbit_busy(TB_RETRY, dev); | |
772 | if (test_and_set_bit(CLAW_BH_ACTIVE, | |
773 | (void *)&p_ch->flag_a) == 0) | |
774 | tasklet_schedule(&p_ch->tasklet); | |
775 | else | |
776 | CLAW_DBF_TEXT(4, trace, "RdBHAct"); | |
777 | CLAW_DBF_TEXT(4, trace, "RdIRQXit"); | |
778 | return; | |
779 | case CLAW_START_WRITE: | |
780 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_CHECK) { | |
4811fcb7 AR |
781 | dev_info(&cdev->dev, |
782 | "%s: Unit Check Occured in " | |
b805da74 AR |
783 | "write channel\n", dev->name); |
784 | clear_bit(0, (void *)&p_ch->IO_active); | |
785 | if (p_ch->irb->ecw[0] & 0x80) { | |
4811fcb7 AR |
786 | dev_info(&cdev->dev, |
787 | "%s: Resetting Event " | |
b805da74 AR |
788 | "occurred:\n", dev->name); |
789 | init_timer(&p_ch->timer); | |
790 | p_ch->timer.function = | |
791 | (void *)claw_write_retry; | |
792 | p_ch->timer.data = (unsigned long)p_ch; | |
793 | p_ch->timer.expires = jiffies + 10*HZ; | |
794 | add_timer(&p_ch->timer); | |
4811fcb7 AR |
795 | dev_info(&cdev->dev, |
796 | "%s: write connection " | |
b805da74 AR |
797 | "restarting\n", dev->name); |
798 | } | |
799 | CLAW_DBF_TEXT(4, trace, "rstrtwrt"); | |
800 | return; | |
801 | } | |
802 | if (p_ch->irb->scsw.cmd.dstat & DEV_STAT_UNIT_EXCEP) { | |
803 | clear_bit(0, (void *)&p_ch->IO_active); | |
4811fcb7 AR |
804 | dev_info(&cdev->dev, |
805 | "%s: Unit Exception " | |
806 | "occurred in write channel\n", | |
807 | dev->name); | |
b805da74 AR |
808 | } |
809 | if (!((p_ch->irb->scsw.cmd.stctl & SCSW_STCTL_SEC_STATUS) || | |
810 | (p_ch->irb->scsw.cmd.stctl == SCSW_STCTL_STATUS_PEND) || | |
811 | (p_ch->irb->scsw.cmd.stctl == | |
812 | (SCSW_STCTL_ALERT_STATUS | SCSW_STCTL_STATUS_PEND)))) { | |
813 | CLAW_DBF_TEXT(4, trace, "writeUE"); | |
814 | return; | |
815 | } | |
816 | clear_bit(0, (void *)&p_ch->IO_active); | |
817 | if (claw_test_and_setbit_busy(TB_TX, dev) == 0) { | |
818 | claw_write_next(p_ch); | |
819 | claw_clearbit_busy(TB_TX, dev); | |
820 | claw_clear_busy(dev); | |
821 | } | |
319cb083 | 822 | p_ch_r = (struct chbk *)&privptr->channel[READ_CHANNEL]; |
b805da74 AR |
823 | if (test_and_set_bit(CLAW_BH_ACTIVE, |
824 | (void *)&p_ch_r->flag_a) == 0) | |
825 | tasklet_schedule(&p_ch_r->tasklet); | |
826 | CLAW_DBF_TEXT(4, trace, "StWtExit"); | |
827 | return; | |
828 | default: | |
4811fcb7 AR |
829 | dev_warn(&cdev->dev, |
830 | "The CLAW device for %s received an unexpected IRQ\n", | |
831 | dev->name); | |
b805da74 AR |
832 | CLAW_DBF_TEXT(2, trace, "badIRQ"); |
833 | return; | |
1da177e4 LT |
834 | } |
835 | ||
836 | } /* end of claw_irq_handler */ | |
837 | ||
838 | ||
839 | /*-------------------------------------------------------------------* | |
840 | * claw_irq_tasklet * | |
841 | * * | |
842 | *--------------------------------------------------------------------*/ | |
843 | static void | |
844 | claw_irq_tasklet ( unsigned long data ) | |
845 | { | |
846 | struct chbk * p_ch; | |
847 | struct net_device *dev; | |
848 | struct claw_privbk * privptr; | |
849 | ||
850 | p_ch = (struct chbk *) data; | |
851 | dev = (struct net_device *)p_ch->ndev; | |
b805da74 | 852 | CLAW_DBF_TEXT(4, trace, "IRQtask"); |
6951df34 | 853 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
854 | unpack_read(dev); |
855 | clear_bit(CLAW_BH_ACTIVE, (void *)&p_ch->flag_a); | |
b805da74 | 856 | CLAW_DBF_TEXT(4, trace, "TskletXt"); |
1da177e4 LT |
857 | return; |
858 | } /* end of claw_irq_bh */ | |
859 | ||
860 | /*-------------------------------------------------------------------* | |
861 | * claw_release * | |
862 | * * | |
863 | *--------------------------------------------------------------------*/ | |
864 | static int | |
865 | claw_release(struct net_device *dev) | |
866 | { | |
867 | int rc; | |
868 | int i; | |
869 | unsigned long saveflags; | |
870 | unsigned long parm; | |
871 | struct claw_privbk *privptr; | |
872 | DECLARE_WAITQUEUE(wait, current); | |
873 | struct ccwbk* p_this_ccw; | |
874 | struct ccwbk* p_buf; | |
875 | ||
876 | if (!dev) | |
877 | return 0; | |
6951df34 | 878 | privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
879 | if (!privptr) |
880 | return 0; | |
b805da74 | 881 | CLAW_DBF_TEXT(4, trace, "release"); |
1da177e4 LT |
882 | privptr->release_pend=1; |
883 | claw_setbit_busy(TB_STOP,dev); | |
884 | for ( i = 1; i >=0 ; i--) { | |
885 | spin_lock_irqsave( | |
886 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
319cb083 | 887 | /* del_timer(&privptr->channel[READ_CHANNEL].timer); */ |
1da177e4 LT |
888 | privptr->channel[i].claw_state = CLAW_STOP; |
889 | privptr->channel[i].IO_active = 0; | |
890 | parm = (unsigned long) &privptr->channel[i]; | |
319cb083 | 891 | if (i == WRITE_CHANNEL) |
1da177e4 | 892 | claw_purge_skb_queue( |
319cb083 | 893 | &privptr->channel[WRITE_CHANNEL].collect_queue); |
1da177e4 LT |
894 | rc = ccw_device_halt (privptr->channel[i].cdev, parm); |
895 | if (privptr->system_validate_comp==0x00) /* never opened? */ | |
896 | init_waitqueue_head(&privptr->channel[i].wait); | |
897 | add_wait_queue(&privptr->channel[i].wait, &wait); | |
898 | set_current_state(TASK_INTERRUPTIBLE); | |
899 | spin_unlock_irqrestore( | |
900 | get_ccwdev_lock(privptr->channel[i].cdev), saveflags); | |
901 | schedule(); | |
902 | set_current_state(TASK_RUNNING); | |
903 | remove_wait_queue(&privptr->channel[i].wait, &wait); | |
904 | if (rc != 0) { | |
905 | ccw_check_return_code(privptr->channel[i].cdev, rc); | |
906 | } | |
907 | } | |
908 | if (privptr->pk_skb != NULL) { | |
8e84c801 | 909 | dev_kfree_skb_any(privptr->pk_skb); |
1da177e4 LT |
910 | privptr->pk_skb = NULL; |
911 | } | |
912 | if(privptr->buffs_alloc != 1) { | |
b805da74 | 913 | CLAW_DBF_TEXT(4, trace, "none2fre"); |
1da177e4 LT |
914 | return 0; |
915 | } | |
b805da74 | 916 | CLAW_DBF_TEXT(4, trace, "freebufs"); |
1da177e4 LT |
917 | if (privptr->p_buff_ccw != NULL) { |
918 | free_pages((unsigned long)privptr->p_buff_ccw, | |
919 | (int)pages_to_order_of_mag(privptr->p_buff_ccw_num)); | |
920 | } | |
b805da74 | 921 | CLAW_DBF_TEXT(4, trace, "freeread"); |
1da177e4 LT |
922 | if (privptr->p_env->read_size < PAGE_SIZE) { |
923 | if (privptr->p_buff_read != NULL) { | |
924 | free_pages((unsigned long)privptr->p_buff_read, | |
925 | (int)pages_to_order_of_mag(privptr->p_buff_read_num)); | |
926 | } | |
927 | } | |
928 | else { | |
929 | p_buf=privptr->p_read_active_first; | |
930 | while (p_buf!=NULL) { | |
931 | free_pages((unsigned long)p_buf->p_buffer, | |
932 | (int)pages_to_order_of_mag( | |
933 | privptr->p_buff_pages_perread )); | |
934 | p_buf=p_buf->next; | |
935 | } | |
936 | } | |
b805da74 | 937 | CLAW_DBF_TEXT(4, trace, "freewrit"); |
1da177e4 LT |
938 | if (privptr->p_env->write_size < PAGE_SIZE ) { |
939 | free_pages((unsigned long)privptr->p_buff_write, | |
940 | (int)pages_to_order_of_mag(privptr->p_buff_write_num)); | |
941 | } | |
942 | else { | |
943 | p_buf=privptr->p_write_active_first; | |
944 | while (p_buf!=NULL) { | |
945 | free_pages((unsigned long)p_buf->p_buffer, | |
946 | (int)pages_to_order_of_mag( | |
947 | privptr->p_buff_pages_perwrite )); | |
948 | p_buf=p_buf->next; | |
949 | } | |
950 | } | |
b805da74 | 951 | CLAW_DBF_TEXT(4, trace, "clearptr"); |
1da177e4 LT |
952 | privptr->buffs_alloc = 0; |
953 | privptr->p_buff_ccw=NULL; | |
954 | privptr->p_buff_read=NULL; | |
955 | privptr->p_buff_write=NULL; | |
956 | privptr->system_validate_comp=0; | |
957 | privptr->release_pend=0; | |
958 | /* Remove any writes that were pending and reset all reads */ | |
959 | p_this_ccw=privptr->p_read_active_first; | |
960 | while (p_this_ccw!=NULL) { | |
961 | p_this_ccw->header.length=0xffff; | |
962 | p_this_ccw->header.opcode=0xff; | |
963 | p_this_ccw->header.flag=0x00; | |
964 | p_this_ccw=p_this_ccw->next; | |
965 | } | |
966 | ||
967 | while (privptr->p_write_active_first!=NULL) { | |
968 | p_this_ccw=privptr->p_write_active_first; | |
969 | p_this_ccw->header.flag=CLAW_PENDING; | |
970 | privptr->p_write_active_first=p_this_ccw->next; | |
971 | p_this_ccw->next=privptr->p_write_free_chain; | |
972 | privptr->p_write_free_chain=p_this_ccw; | |
973 | ++privptr->write_free_count; | |
974 | } | |
975 | privptr->p_write_active_last=NULL; | |
976 | privptr->mtc_logical_link = -1; | |
977 | privptr->mtc_skipping = 1; | |
978 | privptr->mtc_offset=0; | |
979 | ||
319cb083 HC |
980 | if (((privptr->channel[READ_CHANNEL].last_dstat | |
981 | privptr->channel[WRITE_CHANNEL].last_dstat) & | |
1da177e4 | 982 | ~(DEV_STAT_CHN_END | DEV_STAT_DEV_END)) != 0x00) { |
319cb083 | 983 | dev_warn(&privptr->channel[READ_CHANNEL].cdev->dev, |
4811fcb7 AR |
984 | "Deactivating %s completed with incorrect" |
985 | " subchannel status " | |
986 | "(read %02x, write %02x)\n", | |
1da177e4 | 987 | dev->name, |
319cb083 HC |
988 | privptr->channel[READ_CHANNEL].last_dstat, |
989 | privptr->channel[WRITE_CHANNEL].last_dstat); | |
b805da74 | 990 | CLAW_DBF_TEXT(2, trace, "badclose"); |
1da177e4 | 991 | } |
b805da74 | 992 | CLAW_DBF_TEXT(4, trace, "rlsexit"); |
1da177e4 LT |
993 | return 0; |
994 | } /* end of claw_release */ | |
995 | ||
1da177e4 LT |
996 | /*-------------------------------------------------------------------* |
997 | * claw_write_retry * | |
998 | * * | |
999 | *--------------------------------------------------------------------*/ | |
1000 | ||
1001 | static void | |
1002 | claw_write_retry ( struct chbk *p_ch ) | |
1003 | { | |
1004 | ||
1005 | struct net_device *dev=p_ch->ndev; | |
1006 | ||
b805da74 | 1007 | CLAW_DBF_TEXT(4, trace, "w_retry"); |
1da177e4 | 1008 | if (p_ch->claw_state == CLAW_STOP) { |
1da177e4 LT |
1009 | return; |
1010 | } | |
1da177e4 | 1011 | claw_strt_out_IO( dev ); |
b805da74 | 1012 | CLAW_DBF_TEXT(4, trace, "rtry_xit"); |
1da177e4 LT |
1013 | return; |
1014 | } /* end of claw_write_retry */ | |
1015 | ||
1016 | ||
1017 | /*-------------------------------------------------------------------* | |
1018 | * claw_write_next * | |
1019 | * * | |
1020 | *--------------------------------------------------------------------*/ | |
1021 | ||
1022 | static void | |
1023 | claw_write_next ( struct chbk * p_ch ) | |
1024 | { | |
1025 | ||
1026 | struct net_device *dev; | |
1027 | struct claw_privbk *privptr=NULL; | |
1028 | struct sk_buff *pk_skb; | |
1029 | int rc; | |
1030 | ||
b805da74 | 1031 | CLAW_DBF_TEXT(4, trace, "claw_wrt"); |
1da177e4 LT |
1032 | if (p_ch->claw_state == CLAW_STOP) |
1033 | return; | |
1034 | dev = (struct net_device *) p_ch->ndev; | |
6951df34 | 1035 | privptr = (struct claw_privbk *) dev->ml_priv; |
1da177e4 LT |
1036 | claw_free_wrt_buf( dev ); |
1037 | if ((privptr->write_free_count > 0) && | |
b03efcfb | 1038 | !skb_queue_empty(&p_ch->collect_queue)) { |
1da177e4 LT |
1039 | pk_skb = claw_pack_skb(privptr); |
1040 | while (pk_skb != NULL) { | |
1041 | rc = claw_hw_tx( pk_skb, dev,1); | |
1042 | if (privptr->write_free_count > 0) { | |
1043 | pk_skb = claw_pack_skb(privptr); | |
1044 | } else | |
1045 | pk_skb = NULL; | |
1046 | } | |
1047 | } | |
1048 | if (privptr->p_write_active_first!=NULL) { | |
1049 | claw_strt_out_IO(dev); | |
1050 | } | |
1da177e4 LT |
1051 | return; |
1052 | } /* end of claw_write_next */ | |
1053 | ||
1054 | /*-------------------------------------------------------------------* | |
1055 | * * | |
1056 | * claw_timer * | |
1057 | *--------------------------------------------------------------------*/ | |
1058 | ||
1059 | static void | |
1060 | claw_timer ( struct chbk * p_ch ) | |
1061 | { | |
b805da74 | 1062 | CLAW_DBF_TEXT(4, trace, "timer"); |
1da177e4 LT |
1063 | p_ch->flag |= CLAW_TIMER; |
1064 | wake_up(&p_ch->wait); | |
1da177e4 LT |
1065 | return; |
1066 | } /* end of claw_timer */ | |
1067 | ||
1da177e4 LT |
1068 | /* |
1069 | * | |
1070 | * functions | |
1071 | */ | |
1072 | ||
1073 | ||
1074 | /*-------------------------------------------------------------------* | |
1075 | * * | |
1076 | * pages_to_order_of_mag * | |
1077 | * * | |
1078 | * takes a number of pages from 1 to 512 and returns the * | |
1079 | * log(num_pages)/log(2) get_free_pages() needs a base 2 order * | |
1080 | * of magnitude get_free_pages() has an upper order of 9 * | |
1081 | *--------------------------------------------------------------------*/ | |
1082 | ||
4d284cac | 1083 | static int |
1da177e4 LT |
1084 | pages_to_order_of_mag(int num_of_pages) |
1085 | { | |
1086 | int order_of_mag=1; /* assume 2 pages */ | |
b9d2fcee | 1087 | int nump; |
b805da74 AR |
1088 | |
1089 | CLAW_DBF_TEXT_(5, trace, "pages%d", num_of_pages); | |
1da177e4 LT |
1090 | if (num_of_pages == 1) {return 0; } /* magnitude of 0 = 1 page */ |
1091 | /* 512 pages = 2Meg on 4k page systems */ | |
1092 | if (num_of_pages >= 512) {return 9; } | |
1093 | /* we have two or more pages order is at least 1 */ | |
1094 | for (nump=2 ;nump <= 512;nump*=2) { | |
1095 | if (num_of_pages <= nump) | |
1096 | break; | |
1097 | order_of_mag +=1; | |
1098 | } | |
1099 | if (order_of_mag > 9) { order_of_mag = 9; } /* I know it's paranoid */ | |
b805da74 | 1100 | CLAW_DBF_TEXT_(5, trace, "mag%d", order_of_mag); |
1da177e4 LT |
1101 | return order_of_mag; |
1102 | } | |
1103 | ||
1104 | /*-------------------------------------------------------------------* | |
1105 | * * | |
1106 | * add_claw_reads * | |
1107 | * * | |
1108 | *--------------------------------------------------------------------*/ | |
1109 | static int | |
1110 | add_claw_reads(struct net_device *dev, struct ccwbk* p_first, | |
1111 | struct ccwbk* p_last) | |
1112 | { | |
1113 | struct claw_privbk *privptr; | |
1114 | struct ccw1 temp_ccw; | |
1115 | struct endccw * p_end; | |
b805da74 | 1116 | CLAW_DBF_TEXT(4, trace, "addreads"); |
6951df34 | 1117 | privptr = dev->ml_priv; |
1da177e4 LT |
1118 | p_end = privptr->p_end_ccw; |
1119 | ||
1120 | /* first CCW and last CCW contains a new set of read channel programs | |
1121 | * to apend the running channel programs | |
1122 | */ | |
1123 | if ( p_first==NULL) { | |
b805da74 | 1124 | CLAW_DBF_TEXT(4, trace, "addexit"); |
1da177e4 LT |
1125 | return 0; |
1126 | } | |
1127 | ||
1128 | /* set up ending CCW sequence for this segment */ | |
1129 | if (p_end->read1) { | |
1130 | p_end->read1=0x00; /* second ending CCW is now active */ | |
1131 | /* reset ending CCWs and setup TIC CCWs */ | |
1132 | p_end->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1133 | p_end->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1134 | p_last->r_TIC_1.cda =(__u32)__pa(&p_end->read2_nop1); | |
1135 | p_last->r_TIC_2.cda =(__u32)__pa(&p_end->read2_nop1); | |
1136 | p_end->read2_nop2.cda=0; | |
1137 | p_end->read2_nop2.count=1; | |
1138 | } | |
1139 | else { | |
1140 | p_end->read1=0x01; /* first ending CCW is now active */ | |
1141 | /* reset ending CCWs and setup TIC CCWs */ | |
1142 | p_end->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1143 | p_end->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1144 | p_last->r_TIC_1.cda = (__u32)__pa(&p_end->read1_nop1); | |
1145 | p_last->r_TIC_2.cda = (__u32)__pa(&p_end->read1_nop1); | |
1146 | p_end->read1_nop2.cda=0; | |
1147 | p_end->read1_nop2.count=1; | |
1148 | } | |
1149 | ||
1150 | if ( privptr-> p_read_active_first ==NULL ) { | |
4811fcb7 AR |
1151 | privptr->p_read_active_first = p_first; /* set new first */ |
1152 | privptr->p_read_active_last = p_last; /* set new last */ | |
1da177e4 LT |
1153 | } |
1154 | else { | |
1155 | ||
1da177e4 LT |
1156 | /* set up TIC ccw */ |
1157 | temp_ccw.cda= (__u32)__pa(&p_first->read); | |
1158 | temp_ccw.count=0; | |
1159 | temp_ccw.flags=0; | |
1160 | temp_ccw.cmd_code = CCW_CLAW_CMD_TIC; | |
1161 | ||
1162 | ||
1163 | if (p_end->read1) { | |
1164 | ||
1165 | /* first set of CCW's is chained to the new read */ | |
1166 | /* chain, so the second set is chained to the active chain. */ | |
1167 | /* Therefore modify the second set to point to the new */ | |
1168 | /* read chain set up TIC CCWs */ | |
1169 | /* make sure we update the CCW so channel doesn't fetch it */ | |
1170 | /* when it's only half done */ | |
1171 | memcpy( &p_end->read2_nop2, &temp_ccw , | |
1172 | sizeof(struct ccw1)); | |
1173 | privptr->p_read_active_last->r_TIC_1.cda= | |
1174 | (__u32)__pa(&p_first->read); | |
1175 | privptr->p_read_active_last->r_TIC_2.cda= | |
1176 | (__u32)__pa(&p_first->read); | |
1177 | } | |
1178 | else { | |
1179 | /* make sure we update the CCW so channel doesn't */ | |
1180 | /* fetch it when it is only half done */ | |
1181 | memcpy( &p_end->read1_nop2, &temp_ccw , | |
1182 | sizeof(struct ccw1)); | |
1183 | privptr->p_read_active_last->r_TIC_1.cda= | |
1184 | (__u32)__pa(&p_first->read); | |
1185 | privptr->p_read_active_last->r_TIC_2.cda= | |
1186 | (__u32)__pa(&p_first->read); | |
1187 | } | |
4811fcb7 | 1188 | /* chain in new set of blocks */ |
1da177e4 LT |
1189 | privptr->p_read_active_last->next = p_first; |
1190 | privptr->p_read_active_last=p_last; | |
1191 | } /* end of if ( privptr-> p_read_active_first ==NULL) */ | |
b805da74 | 1192 | CLAW_DBF_TEXT(4, trace, "addexit"); |
1da177e4 LT |
1193 | return 0; |
1194 | } /* end of add_claw_reads */ | |
1195 | ||
1196 | /*-------------------------------------------------------------------* | |
1197 | * ccw_check_return_code * | |
1198 | * * | |
1199 | *-------------------------------------------------------------------*/ | |
1200 | ||
4d284cac | 1201 | static void |
1da177e4 LT |
1202 | ccw_check_return_code(struct ccw_device *cdev, int return_code) |
1203 | { | |
b805da74 | 1204 | CLAW_DBF_TEXT(4, trace, "ccwret"); |
1da177e4 LT |
1205 | if (return_code != 0) { |
1206 | switch (return_code) { | |
b805da74 AR |
1207 | case -EBUSY: /* BUSY is a transient state no action needed */ |
1208 | break; | |
1209 | case -ENODEV: | |
4811fcb7 AR |
1210 | dev_err(&cdev->dev, "The remote channel adapter is not" |
1211 | " available\n"); | |
b805da74 AR |
1212 | break; |
1213 | case -EINVAL: | |
4811fcb7 AR |
1214 | dev_err(&cdev->dev, |
1215 | "The status of the remote channel adapter" | |
1216 | " is not valid\n"); | |
b805da74 AR |
1217 | break; |
1218 | default: | |
4811fcb7 AR |
1219 | dev_err(&cdev->dev, "The common device layer" |
1220 | " returned error code %d\n", | |
1221 | return_code); | |
b805da74 AR |
1222 | } |
1223 | } | |
1224 | CLAW_DBF_TEXT(4, trace, "ccwret"); | |
1da177e4 LT |
1225 | } /* end of ccw_check_return_code */ |
1226 | ||
1227 | /*-------------------------------------------------------------------* | |
1228 | * ccw_check_unit_check * | |
1229 | *--------------------------------------------------------------------*/ | |
1230 | ||
4d284cac | 1231 | static void |
1da177e4 LT |
1232 | ccw_check_unit_check(struct chbk * p_ch, unsigned char sense ) |
1233 | { | |
b805da74 | 1234 | struct net_device *ndev = p_ch->ndev; |
4811fcb7 | 1235 | struct device *dev = &p_ch->cdev->dev; |
1da177e4 | 1236 | |
b805da74 | 1237 | CLAW_DBF_TEXT(4, trace, "unitchek"); |
4811fcb7 AR |
1238 | dev_warn(dev, "The communication peer of %s disconnected\n", |
1239 | ndev->name); | |
1da177e4 | 1240 | |
b9d2fcee AR |
1241 | if (sense & 0x40) { |
1242 | if (sense & 0x01) { | |
4811fcb7 AR |
1243 | dev_warn(dev, "The remote channel adapter for" |
1244 | " %s has been reset\n", | |
1245 | ndev->name); | |
b9d2fcee AR |
1246 | } |
1247 | } else if (sense & 0x20) { | |
1248 | if (sense & 0x04) { | |
4811fcb7 AR |
1249 | dev_warn(dev, "A data streaming timeout occurred" |
1250 | " for %s\n", | |
1251 | ndev->name); | |
b9d2fcee | 1252 | } else if (sense & 0x10) { |
4811fcb7 AR |
1253 | dev_warn(dev, "The remote channel adapter for %s" |
1254 | " is faulty\n", | |
1255 | ndev->name); | |
b9d2fcee AR |
1256 | } else { |
1257 | dev_warn(dev, "A data transfer parity error occurred" | |
4811fcb7 AR |
1258 | " for %s\n", |
1259 | ndev->name); | |
b9d2fcee AR |
1260 | } |
1261 | } else if (sense & 0x10) { | |
1262 | dev_warn(dev, "A read data parity error occurred" | |
1263 | " for %s\n", | |
1264 | ndev->name); | |
1265 | } | |
1da177e4 | 1266 | |
1da177e4 LT |
1267 | } /* end of ccw_check_unit_check */ |
1268 | ||
1da177e4 LT |
1269 | /*-------------------------------------------------------------------* |
1270 | * find_link * | |
1271 | *--------------------------------------------------------------------*/ | |
1272 | static int | |
1273 | find_link(struct net_device *dev, char *host_name, char *ws_name ) | |
1274 | { | |
1275 | struct claw_privbk *privptr; | |
1276 | struct claw_env *p_env; | |
1277 | int rc=0; | |
1278 | ||
b805da74 | 1279 | CLAW_DBF_TEXT(2, setup, "findlink"); |
6951df34 | 1280 | privptr = dev->ml_priv; |
1da177e4 LT |
1281 | p_env=privptr->p_env; |
1282 | switch (p_env->packing) | |
1283 | { | |
1284 | case PACKING_ASK: | |
1285 | if ((memcmp(WS_APPL_NAME_PACKED, host_name, 8)!=0) || | |
1286 | (memcmp(WS_APPL_NAME_PACKED, ws_name, 8)!=0 )) | |
1287 | rc = EINVAL; | |
1288 | break; | |
1289 | case DO_PACKED: | |
1290 | case PACK_SEND: | |
1291 | if ((memcmp(WS_APPL_NAME_IP_NAME, host_name, 8)!=0) || | |
1292 | (memcmp(WS_APPL_NAME_IP_NAME, ws_name, 8)!=0 )) | |
1293 | rc = EINVAL; | |
1294 | break; | |
1295 | default: | |
1296 | if ((memcmp(HOST_APPL_NAME, host_name, 8)!=0) || | |
1297 | (memcmp(p_env->api_type , ws_name, 8)!=0)) | |
1298 | rc = EINVAL; | |
1299 | break; | |
1300 | } | |
1301 | ||
b9d2fcee | 1302 | return rc; |
1da177e4 LT |
1303 | } /* end of find_link */ |
1304 | ||
1305 | /*-------------------------------------------------------------------* | |
1306 | * claw_hw_tx * | |
1307 | * * | |
1308 | * * | |
1309 | *-------------------------------------------------------------------*/ | |
1310 | ||
1311 | static int | |
1312 | claw_hw_tx(struct sk_buff *skb, struct net_device *dev, long linkid) | |
1313 | { | |
1314 | int rc=0; | |
1315 | struct claw_privbk *privptr; | |
1316 | struct ccwbk *p_this_ccw; | |
1317 | struct ccwbk *p_first_ccw; | |
1318 | struct ccwbk *p_last_ccw; | |
1319 | __u32 numBuffers; | |
1320 | signed long len_of_data; | |
1321 | unsigned long bytesInThisBuffer; | |
1322 | unsigned char *pDataAddress; | |
1323 | struct endccw *pEnd; | |
1324 | struct ccw1 tempCCW; | |
1325 | struct chbk *p_ch; | |
1326 | struct claw_env *p_env; | |
1327 | int lock; | |
1328 | struct clawph *pk_head; | |
1329 | struct chbk *ch; | |
b805da74 AR |
1330 | |
1331 | CLAW_DBF_TEXT(4, trace, "hw_tx"); | |
6951df34 | 1332 | privptr = (struct claw_privbk *)(dev->ml_priv); |
319cb083 | 1333 | p_ch = (struct chbk *)&privptr->channel[WRITE_CHANNEL]; |
1da177e4 | 1334 | p_env =privptr->p_env; |
1da177e4 LT |
1335 | claw_free_wrt_buf(dev); /* Clean up free chain if posible */ |
1336 | /* scan the write queue to free any completed write packets */ | |
1337 | p_first_ccw=NULL; | |
1338 | p_last_ccw=NULL; | |
1339 | if ((p_env->packing >= PACK_SEND) && | |
1340 | (skb->cb[1] != 'P')) { | |
1341 | skb_push(skb,sizeof(struct clawph)); | |
1342 | pk_head=(struct clawph *)skb->data; | |
1343 | pk_head->len=skb->len-sizeof(struct clawph); | |
1344 | if (pk_head->len%4) { | |
1345 | pk_head->len+= 4-(pk_head->len%4); | |
1346 | skb_pad(skb,4-(pk_head->len%4)); | |
1347 | skb_put(skb,4-(pk_head->len%4)); | |
1348 | } | |
1349 | if (p_env->packing == DO_PACKED) | |
1350 | pk_head->link_num = linkid; | |
1351 | else | |
1352 | pk_head->link_num = 0; | |
1353 | pk_head->flag = 0x00; | |
1354 | skb_pad(skb,4); | |
1355 | skb->cb[1] = 'P'; | |
1356 | } | |
1357 | if (linkid == 0) { | |
1358 | if (claw_check_busy(dev)) { | |
1359 | if (privptr->write_free_count!=0) { | |
1360 | claw_clear_busy(dev); | |
1361 | } | |
1362 | else { | |
1363 | claw_strt_out_IO(dev ); | |
1364 | claw_free_wrt_buf( dev ); | |
1365 | if (privptr->write_free_count==0) { | |
319cb083 | 1366 | ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
1367 | atomic_inc(&skb->users); |
1368 | skb_queue_tail(&ch->collect_queue, skb); | |
1369 | goto Done; | |
1370 | } | |
1371 | else { | |
1372 | claw_clear_busy(dev); | |
1373 | } | |
1374 | } | |
1375 | } | |
1376 | /* tx lock */ | |
1377 | if (claw_test_and_setbit_busy(TB_TX,dev)) { /* set to busy */ | |
319cb083 | 1378 | ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
1379 | atomic_inc(&skb->users); |
1380 | skb_queue_tail(&ch->collect_queue, skb); | |
1381 | claw_strt_out_IO(dev ); | |
1382 | rc=-EBUSY; | |
1383 | goto Done2; | |
1384 | } | |
1385 | } | |
1386 | /* See how many write buffers are required to hold this data */ | |
f5154fbf | 1387 | numBuffers = DIV_ROUND_UP(skb->len, privptr->p_env->write_size); |
1da177e4 LT |
1388 | |
1389 | /* If that number of buffers isn't available, give up for now */ | |
1390 | if (privptr->write_free_count < numBuffers || | |
1391 | privptr->p_write_free_chain == NULL ) { | |
1392 | ||
1393 | claw_setbit_busy(TB_NOBUFFER,dev); | |
319cb083 | 1394 | ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
1395 | atomic_inc(&skb->users); |
1396 | skb_queue_tail(&ch->collect_queue, skb); | |
b805da74 | 1397 | CLAW_DBF_TEXT(2, trace, "clawbusy"); |
1da177e4 LT |
1398 | goto Done2; |
1399 | } | |
1400 | pDataAddress=skb->data; | |
1401 | len_of_data=skb->len; | |
1402 | ||
1403 | while (len_of_data > 0) { | |
1da177e4 LT |
1404 | p_this_ccw=privptr->p_write_free_chain; /* get a block */ |
1405 | if (p_this_ccw == NULL) { /* lost the race */ | |
319cb083 | 1406 | ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 LT |
1407 | atomic_inc(&skb->users); |
1408 | skb_queue_tail(&ch->collect_queue, skb); | |
1409 | goto Done2; | |
1410 | } | |
1411 | privptr->p_write_free_chain=p_this_ccw->next; | |
1412 | p_this_ccw->next=NULL; | |
1413 | --privptr->write_free_count; /* -1 */ | |
b9d2fcee AR |
1414 | if (len_of_data >= privptr->p_env->write_size) |
1415 | bytesInThisBuffer = privptr->p_env->write_size; | |
1416 | else | |
1417 | bytesInThisBuffer = len_of_data; | |
1da177e4 LT |
1418 | memcpy( p_this_ccw->p_buffer,pDataAddress, bytesInThisBuffer); |
1419 | len_of_data-=bytesInThisBuffer; | |
1420 | pDataAddress+=(unsigned long)bytesInThisBuffer; | |
1421 | /* setup write CCW */ | |
1422 | p_this_ccw->write.cmd_code = (linkid * 8) +1; | |
1423 | if (len_of_data>0) { | |
1424 | p_this_ccw->write.cmd_code+=MORE_to_COME_FLAG; | |
1425 | } | |
1426 | p_this_ccw->write.count=bytesInThisBuffer; | |
1427 | /* now add to end of this chain */ | |
1428 | if (p_first_ccw==NULL) { | |
1429 | p_first_ccw=p_this_ccw; | |
1430 | } | |
1431 | if (p_last_ccw!=NULL) { | |
1432 | p_last_ccw->next=p_this_ccw; | |
1433 | /* set up TIC ccws */ | |
1434 | p_last_ccw->w_TIC_1.cda= | |
1435 | (__u32)__pa(&p_this_ccw->write); | |
1436 | } | |
1437 | p_last_ccw=p_this_ccw; /* save new last block */ | |
1da177e4 LT |
1438 | } |
1439 | ||
1440 | /* FirstCCW and LastCCW now contain a new set of write channel | |
1441 | * programs to append to the running channel program | |
1442 | */ | |
1443 | ||
1444 | if (p_first_ccw!=NULL) { | |
4811fcb7 | 1445 | /* setup ending ccw sequence for this segment */ |
1da177e4 LT |
1446 | pEnd=privptr->p_end_ccw; |
1447 | if (pEnd->write1) { | |
1448 | pEnd->write1=0x00; /* second end ccw is now active */ | |
1449 | /* set up Tic CCWs */ | |
1450 | p_last_ccw->w_TIC_1.cda= | |
1451 | (__u32)__pa(&pEnd->write2_nop1); | |
1452 | pEnd->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1453 | pEnd->write2_nop2.flags = | |
1454 | CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1455 | pEnd->write2_nop2.cda=0; | |
1456 | pEnd->write2_nop2.count=1; | |
1457 | } | |
1458 | else { /* end of if (pEnd->write1)*/ | |
1459 | pEnd->write1=0x01; /* first end ccw is now active */ | |
1460 | /* set up Tic CCWs */ | |
1461 | p_last_ccw->w_TIC_1.cda= | |
1462 | (__u32)__pa(&pEnd->write1_nop1); | |
1463 | pEnd->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1464 | pEnd->write1_nop2.flags = | |
1465 | CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1466 | pEnd->write1_nop2.cda=0; | |
1467 | pEnd->write1_nop2.count=1; | |
1468 | } /* end if if (pEnd->write1) */ | |
1469 | ||
1da177e4 LT |
1470 | if (privptr->p_write_active_first==NULL ) { |
1471 | privptr->p_write_active_first=p_first_ccw; | |
1472 | privptr->p_write_active_last=p_last_ccw; | |
1473 | } | |
1474 | else { | |
1da177e4 LT |
1475 | /* set up Tic CCWs */ |
1476 | ||
1477 | tempCCW.cda=(__u32)__pa(&p_first_ccw->write); | |
1478 | tempCCW.count=0; | |
1479 | tempCCW.flags=0; | |
1480 | tempCCW.cmd_code=CCW_CLAW_CMD_TIC; | |
1481 | ||
1482 | if (pEnd->write1) { | |
1483 | ||
1484 | /* | |
1485 | * first set of ending CCW's is chained to the new write | |
1486 | * chain, so the second set is chained to the active chain | |
1487 | * Therefore modify the second set to point the new write chain. | |
1488 | * make sure we update the CCW atomically | |
1489 | * so channel does not fetch it when it's only half done | |
1490 | */ | |
1491 | memcpy( &pEnd->write2_nop2, &tempCCW , | |
1492 | sizeof(struct ccw1)); | |
1493 | privptr->p_write_active_last->w_TIC_1.cda= | |
1494 | (__u32)__pa(&p_first_ccw->write); | |
1495 | } | |
1496 | else { | |
1497 | ||
1498 | /*make sure we update the CCW atomically | |
1499 | *so channel does not fetch it when it's only half done | |
1500 | */ | |
1501 | memcpy(&pEnd->write1_nop2, &tempCCW , | |
1502 | sizeof(struct ccw1)); | |
1503 | privptr->p_write_active_last->w_TIC_1.cda= | |
1504 | (__u32)__pa(&p_first_ccw->write); | |
1505 | ||
1506 | } /* end if if (pEnd->write1) */ | |
1507 | ||
1508 | privptr->p_write_active_last->next=p_first_ccw; | |
1509 | privptr->p_write_active_last=p_last_ccw; | |
1510 | } | |
1511 | ||
1512 | } /* endif (p_first_ccw!=NULL) */ | |
8e84c801 | 1513 | dev_kfree_skb_any(skb); |
1da177e4 LT |
1514 | if (linkid==0) { |
1515 | lock=LOCK_NO; | |
1516 | } | |
1517 | else { | |
1518 | lock=LOCK_YES; | |
1519 | } | |
1520 | claw_strt_out_IO(dev ); | |
1521 | /* if write free count is zero , set NOBUFFER */ | |
1da177e4 LT |
1522 | if (privptr->write_free_count==0) { |
1523 | claw_setbit_busy(TB_NOBUFFER,dev); | |
1524 | } | |
1525 | Done2: | |
1526 | claw_clearbit_busy(TB_TX,dev); | |
1527 | Done: | |
1da177e4 LT |
1528 | return(rc); |
1529 | } /* end of claw_hw_tx */ | |
1530 | ||
1531 | /*-------------------------------------------------------------------* | |
1532 | * * | |
1533 | * init_ccw_bk * | |
1534 | * * | |
1535 | *--------------------------------------------------------------------*/ | |
1536 | ||
1537 | static int | |
1538 | init_ccw_bk(struct net_device *dev) | |
1539 | { | |
1540 | ||
1541 | __u32 ccw_blocks_required; | |
1542 | __u32 ccw_blocks_perpage; | |
1543 | __u32 ccw_pages_required; | |
1544 | __u32 claw_reads_perpage=1; | |
1545 | __u32 claw_read_pages; | |
1546 | __u32 claw_writes_perpage=1; | |
1547 | __u32 claw_write_pages; | |
1548 | void *p_buff=NULL; | |
1549 | struct ccwbk*p_free_chain; | |
1550 | struct ccwbk*p_buf; | |
1551 | struct ccwbk*p_last_CCWB; | |
1552 | struct ccwbk*p_first_CCWB; | |
1553 | struct endccw *p_endccw=NULL; | |
6951df34 PT |
1554 | addr_t real_address; |
1555 | struct claw_privbk *privptr = dev->ml_priv; | |
1da177e4 LT |
1556 | struct clawh *pClawH=NULL; |
1557 | addr_t real_TIC_address; | |
1558 | int i,j; | |
b805da74 | 1559 | CLAW_DBF_TEXT(4, trace, "init_ccw"); |
1da177e4 LT |
1560 | |
1561 | /* initialize statistics field */ | |
1562 | privptr->active_link_ID=0; | |
1563 | /* initialize ccwbk pointers */ | |
1564 | privptr->p_write_free_chain=NULL; /* pointer to free ccw chain*/ | |
1565 | privptr->p_write_active_first=NULL; /* pointer to the first write ccw*/ | |
1566 | privptr->p_write_active_last=NULL; /* pointer to the last write ccw*/ | |
1567 | privptr->p_read_active_first=NULL; /* pointer to the first read ccw*/ | |
1568 | privptr->p_read_active_last=NULL; /* pointer to the last read ccw */ | |
1569 | privptr->p_end_ccw=NULL; /* pointer to ending ccw */ | |
1570 | privptr->p_claw_signal_blk=NULL; /* pointer to signal block */ | |
1571 | privptr->buffs_alloc = 0; | |
1572 | memset(&privptr->end_ccw, 0x00, sizeof(struct endccw)); | |
1573 | memset(&privptr->ctl_bk, 0x00, sizeof(struct clawctl)); | |
1574 | /* initialize free write ccwbk counter */ | |
1575 | privptr->write_free_count=0; /* number of free bufs on write chain */ | |
1576 | p_last_CCWB = NULL; | |
1577 | p_first_CCWB= NULL; | |
1578 | /* | |
1579 | * We need 1 CCW block for each read buffer, 1 for each | |
1580 | * write buffer, plus 1 for ClawSignalBlock | |
1581 | */ | |
1582 | ccw_blocks_required = | |
1583 | privptr->p_env->read_buffers+privptr->p_env->write_buffers+1; | |
1da177e4 LT |
1584 | /* |
1585 | * compute number of CCW blocks that will fit in a page | |
1586 | */ | |
1587 | ccw_blocks_perpage= PAGE_SIZE / CCWBK_SIZE; | |
1588 | ccw_pages_required= | |
f5154fbf | 1589 | DIV_ROUND_UP(ccw_blocks_required, ccw_blocks_perpage); |
1da177e4 | 1590 | |
1da177e4 LT |
1591 | /* |
1592 | * read and write sizes are set by 2 constants in claw.h | |
1593 | * 4k and 32k. Unpacked values other than 4k are not going to | |
1594 | * provide good performance. With packing buffers support 32k | |
1595 | * buffers are used. | |
1596 | */ | |
f5154fbf JL |
1597 | if (privptr->p_env->read_size < PAGE_SIZE) { |
1598 | claw_reads_perpage = PAGE_SIZE / privptr->p_env->read_size; | |
1599 | claw_read_pages = DIV_ROUND_UP(privptr->p_env->read_buffers, | |
1600 | claw_reads_perpage); | |
1da177e4 LT |
1601 | } |
1602 | else { /* > or equal */ | |
f5154fbf JL |
1603 | privptr->p_buff_pages_perread = |
1604 | DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE); | |
1605 | claw_read_pages = privptr->p_env->read_buffers * | |
1606 | privptr->p_buff_pages_perread; | |
1da177e4 LT |
1607 | } |
1608 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
f5154fbf JL |
1609 | claw_writes_perpage = |
1610 | PAGE_SIZE / privptr->p_env->write_size; | |
1611 | claw_write_pages = DIV_ROUND_UP(privptr->p_env->write_buffers, | |
1612 | claw_writes_perpage); | |
1da177e4 LT |
1613 | |
1614 | } | |
1615 | else { /* > or equal */ | |
f5154fbf JL |
1616 | privptr->p_buff_pages_perwrite = |
1617 | DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE); | |
1618 | claw_write_pages = privptr->p_env->write_buffers * | |
1619 | privptr->p_buff_pages_perwrite; | |
1da177e4 | 1620 | } |
1da177e4 LT |
1621 | /* |
1622 | * allocate ccw_pages_required | |
1623 | */ | |
1624 | if (privptr->p_buff_ccw==NULL) { | |
1625 | privptr->p_buff_ccw= | |
1626 | (void *)__get_free_pages(__GFP_DMA, | |
1627 | (int)pages_to_order_of_mag(ccw_pages_required )); | |
1628 | if (privptr->p_buff_ccw==NULL) { | |
1da177e4 LT |
1629 | return -ENOMEM; |
1630 | } | |
1631 | privptr->p_buff_ccw_num=ccw_pages_required; | |
1632 | } | |
1633 | memset(privptr->p_buff_ccw, 0x00, | |
1634 | privptr->p_buff_ccw_num * PAGE_SIZE); | |
1635 | ||
1636 | /* | |
1637 | * obtain ending ccw block address | |
1638 | * | |
1639 | */ | |
1640 | privptr->p_end_ccw = (struct endccw *)&privptr->end_ccw; | |
1641 | real_address = (__u32)__pa(privptr->p_end_ccw); | |
1642 | /* Initialize ending CCW block */ | |
1da177e4 LT |
1643 | p_endccw=privptr->p_end_ccw; |
1644 | p_endccw->real=real_address; | |
1645 | p_endccw->write1=0x00; | |
1646 | p_endccw->read1=0x00; | |
1647 | ||
1648 | /* write1_nop1 */ | |
1649 | p_endccw->write1_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1650 | p_endccw->write1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1651 | p_endccw->write1_nop1.count = 1; | |
1652 | p_endccw->write1_nop1.cda = 0; | |
1653 | ||
1654 | /* write1_nop2 */ | |
1655 | p_endccw->write1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1656 | p_endccw->write1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1657 | p_endccw->write1_nop2.count = 1; | |
1658 | p_endccw->write1_nop2.cda = 0; | |
1659 | ||
1660 | /* write2_nop1 */ | |
1661 | p_endccw->write2_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1662 | p_endccw->write2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1663 | p_endccw->write2_nop1.count = 1; | |
1664 | p_endccw->write2_nop1.cda = 0; | |
1665 | ||
1666 | /* write2_nop2 */ | |
1667 | p_endccw->write2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1668 | p_endccw->write2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1669 | p_endccw->write2_nop2.count = 1; | |
1670 | p_endccw->write2_nop2.cda = 0; | |
1671 | ||
1672 | /* read1_nop1 */ | |
1673 | p_endccw->read1_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1674 | p_endccw->read1_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1675 | p_endccw->read1_nop1.count = 1; | |
1676 | p_endccw->read1_nop1.cda = 0; | |
1677 | ||
1678 | /* read1_nop2 */ | |
1679 | p_endccw->read1_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1680 | p_endccw->read1_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1681 | p_endccw->read1_nop2.count = 1; | |
1682 | p_endccw->read1_nop2.cda = 0; | |
1683 | ||
1684 | /* read2_nop1 */ | |
1685 | p_endccw->read2_nop1.cmd_code = CCW_CLAW_CMD_NOP; | |
1686 | p_endccw->read2_nop1.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1687 | p_endccw->read2_nop1.count = 1; | |
1688 | p_endccw->read2_nop1.cda = 0; | |
1689 | ||
1690 | /* read2_nop2 */ | |
1691 | p_endccw->read2_nop2.cmd_code = CCW_CLAW_CMD_READFF; | |
1692 | p_endccw->read2_nop2.flags = CCW_FLAG_SLI | CCW_FLAG_SKIP; | |
1693 | p_endccw->read2_nop2.count = 1; | |
1694 | p_endccw->read2_nop2.cda = 0; | |
1695 | ||
1da177e4 LT |
1696 | /* |
1697 | * Build a chain of CCWs | |
1698 | * | |
1699 | */ | |
1da177e4 LT |
1700 | p_buff=privptr->p_buff_ccw; |
1701 | ||
1702 | p_free_chain=NULL; | |
1703 | for (i=0 ; i < ccw_pages_required; i++ ) { | |
1704 | real_address = (__u32)__pa(p_buff); | |
1705 | p_buf=p_buff; | |
1706 | for (j=0 ; j < ccw_blocks_perpage ; j++) { | |
1707 | p_buf->next = p_free_chain; | |
1708 | p_free_chain = p_buf; | |
1709 | p_buf->real=(__u32)__pa(p_buf); | |
1710 | ++p_buf; | |
1711 | } | |
1712 | p_buff+=PAGE_SIZE; | |
1713 | } | |
1da177e4 LT |
1714 | /* |
1715 | * Initialize ClawSignalBlock | |
1716 | * | |
1717 | */ | |
1da177e4 LT |
1718 | if (privptr->p_claw_signal_blk==NULL) { |
1719 | privptr->p_claw_signal_blk=p_free_chain; | |
1720 | p_free_chain=p_free_chain->next; | |
1721 | pClawH=(struct clawh *)privptr->p_claw_signal_blk; | |
1722 | pClawH->length=0xffff; | |
1723 | pClawH->opcode=0xff; | |
1724 | pClawH->flag=CLAW_BUSY; | |
1725 | } | |
1da177e4 LT |
1726 | |
1727 | /* | |
1728 | * allocate write_pages_required and add to free chain | |
1729 | */ | |
1730 | if (privptr->p_buff_write==NULL) { | |
1731 | if (privptr->p_env->write_size < PAGE_SIZE) { | |
1732 | privptr->p_buff_write= | |
1733 | (void *)__get_free_pages(__GFP_DMA, | |
1734 | (int)pages_to_order_of_mag(claw_write_pages )); | |
1735 | if (privptr->p_buff_write==NULL) { | |
1da177e4 | 1736 | privptr->p_buff_ccw=NULL; |
1da177e4 LT |
1737 | return -ENOMEM; |
1738 | } | |
1739 | /* | |
1740 | * Build CLAW write free chain | |
1741 | * | |
1742 | */ | |
1743 | ||
1744 | memset(privptr->p_buff_write, 0x00, | |
1745 | ccw_pages_required * PAGE_SIZE); | |
1da177e4 LT |
1746 | privptr->p_write_free_chain=NULL; |
1747 | ||
1748 | p_buff=privptr->p_buff_write; | |
1749 | ||
1750 | for (i=0 ; i< privptr->p_env->write_buffers ; i++) { | |
1751 | p_buf = p_free_chain; /* get a CCW */ | |
1752 | p_free_chain = p_buf->next; | |
1753 | p_buf->next =privptr->p_write_free_chain; | |
1754 | privptr->p_write_free_chain = p_buf; | |
1755 | p_buf-> p_buffer = (struct clawbuf *)p_buff; | |
1756 | p_buf-> write.cda = (__u32)__pa(p_buff); | |
1757 | p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1758 | p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1759 | p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1760 | p_buf-> w_read_FF.count = 1; | |
1761 | p_buf-> w_read_FF.cda = | |
1762 | (__u32)__pa(&p_buf-> header.flag); | |
1763 | p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1764 | p_buf-> w_TIC_1.flags = 0; | |
1765 | p_buf-> w_TIC_1.count = 0; | |
1766 | ||
4811fcb7 AR |
1767 | if (((unsigned long)p_buff + |
1768 | privptr->p_env->write_size) >= | |
1da177e4 | 1769 | ((unsigned long)(p_buff+2* |
4811fcb7 AR |
1770 | (privptr->p_env->write_size) - 1) & PAGE_MASK)) { |
1771 | p_buff = p_buff+privptr->p_env->write_size; | |
1da177e4 LT |
1772 | } |
1773 | } | |
1774 | } | |
1775 | else /* Buffers are => PAGE_SIZE. 1 buff per get_free_pages */ | |
1776 | { | |
1777 | privptr->p_write_free_chain=NULL; | |
1778 | for (i = 0; i< privptr->p_env->write_buffers ; i++) { | |
1779 | p_buff=(void *)__get_free_pages(__GFP_DMA, | |
1780 | (int)pages_to_order_of_mag( | |
1781 | privptr->p_buff_pages_perwrite) ); | |
1da177e4 | 1782 | if (p_buff==NULL) { |
1da177e4 LT |
1783 | free_pages((unsigned long)privptr->p_buff_ccw, |
1784 | (int)pages_to_order_of_mag( | |
1785 | privptr->p_buff_ccw_num)); | |
1786 | privptr->p_buff_ccw=NULL; | |
1787 | p_buf=privptr->p_buff_write; | |
1788 | while (p_buf!=NULL) { | |
1789 | free_pages((unsigned long) | |
1790 | p_buf->p_buffer, | |
1791 | (int)pages_to_order_of_mag( | |
1792 | privptr->p_buff_pages_perwrite)); | |
1793 | p_buf=p_buf->next; | |
1794 | } | |
1da177e4 LT |
1795 | return -ENOMEM; |
1796 | } /* Error on get_pages */ | |
1797 | memset(p_buff, 0x00, privptr->p_env->write_size ); | |
1798 | p_buf = p_free_chain; | |
1799 | p_free_chain = p_buf->next; | |
1800 | p_buf->next = privptr->p_write_free_chain; | |
1801 | privptr->p_write_free_chain = p_buf; | |
1802 | privptr->p_buff_write = p_buf; | |
1803 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1804 | p_buf-> write.cda = (__u32)__pa(p_buff); | |
1805 | p_buf-> write.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1806 | p_buf-> w_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1807 | p_buf-> w_read_FF.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1808 | p_buf-> w_read_FF.count = 1; | |
1809 | p_buf-> w_read_FF.cda = | |
1810 | (__u32)__pa(&p_buf-> header.flag); | |
1811 | p_buf-> w_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1812 | p_buf-> w_TIC_1.flags = 0; | |
1813 | p_buf-> w_TIC_1.count = 0; | |
1814 | } /* for all write_buffers */ | |
1815 | ||
1816 | } /* else buffers are PAGE_SIZE or bigger */ | |
1817 | ||
1818 | } | |
1819 | privptr->p_buff_write_num=claw_write_pages; | |
1820 | privptr->write_free_count=privptr->p_env->write_buffers; | |
1821 | ||
1822 | ||
1da177e4 LT |
1823 | /* |
1824 | * allocate read_pages_required and chain to free chain | |
1825 | */ | |
1826 | if (privptr->p_buff_read==NULL) { | |
1827 | if (privptr->p_env->read_size < PAGE_SIZE) { | |
1828 | privptr->p_buff_read= | |
1829 | (void *)__get_free_pages(__GFP_DMA, | |
1830 | (int)pages_to_order_of_mag(claw_read_pages) ); | |
1831 | if (privptr->p_buff_read==NULL) { | |
1da177e4 LT |
1832 | free_pages((unsigned long)privptr->p_buff_ccw, |
1833 | (int)pages_to_order_of_mag( | |
1834 | privptr->p_buff_ccw_num)); | |
1835 | /* free the write pages size is < page size */ | |
1836 | free_pages((unsigned long)privptr->p_buff_write, | |
1837 | (int)pages_to_order_of_mag( | |
1838 | privptr->p_buff_write_num)); | |
1839 | privptr->p_buff_ccw=NULL; | |
1840 | privptr->p_buff_write=NULL; | |
1da177e4 LT |
1841 | return -ENOMEM; |
1842 | } | |
1843 | memset(privptr->p_buff_read, 0x00, claw_read_pages * PAGE_SIZE); | |
1844 | privptr->p_buff_read_num=claw_read_pages; | |
1845 | /* | |
1846 | * Build CLAW read free chain | |
1847 | * | |
1848 | */ | |
1da177e4 LT |
1849 | p_buff=privptr->p_buff_read; |
1850 | for (i=0 ; i< privptr->p_env->read_buffers ; i++) { | |
1851 | p_buf = p_free_chain; | |
1852 | p_free_chain = p_buf->next; | |
1853 | ||
1854 | if (p_last_CCWB==NULL) { | |
1855 | p_buf->next=NULL; | |
1856 | real_TIC_address=0; | |
1857 | p_last_CCWB=p_buf; | |
1858 | } | |
1859 | else { | |
1860 | p_buf->next=p_first_CCWB; | |
1861 | real_TIC_address= | |
1862 | (__u32)__pa(&p_first_CCWB -> read ); | |
1863 | } | |
1864 | ||
1865 | p_first_CCWB=p_buf; | |
1866 | ||
1867 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1868 | /* initialize read command */ | |
1869 | p_buf-> read.cmd_code = CCW_CLAW_CMD_READ; | |
1870 | p_buf-> read.cda = (__u32)__pa(p_buff); | |
1871 | p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1872 | p_buf-> read.count = privptr->p_env->read_size; | |
1873 | ||
1874 | /* initialize read_h command */ | |
1875 | p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER; | |
1876 | p_buf-> read_h.cda = | |
1877 | (__u32)__pa(&(p_buf->header)); | |
1878 | p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1879 | p_buf-> read_h.count = sizeof(struct clawh); | |
1880 | ||
1881 | /* initialize Signal command */ | |
1882 | p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD; | |
1883 | p_buf-> signal.cda = | |
1884 | (__u32)__pa(&(pClawH->flag)); | |
1885 | p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1886 | p_buf-> signal.count = 1; | |
1887 | ||
1888 | /* initialize r_TIC_1 command */ | |
1889 | p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1890 | p_buf-> r_TIC_1.cda = (__u32)real_TIC_address; | |
1891 | p_buf-> r_TIC_1.flags = 0; | |
1892 | p_buf-> r_TIC_1.count = 0; | |
1893 | ||
1894 | /* initialize r_read_FF command */ | |
1895 | p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
1896 | p_buf-> r_read_FF.cda = | |
1897 | (__u32)__pa(&(pClawH->flag)); | |
1898 | p_buf-> r_read_FF.flags = | |
1899 | CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI; | |
1900 | p_buf-> r_read_FF.count = 1; | |
1901 | ||
1902 | /* initialize r_TIC_2 */ | |
1903 | memcpy(&p_buf->r_TIC_2, | |
1904 | &p_buf->r_TIC_1, sizeof(struct ccw1)); | |
1905 | ||
1906 | /* initialize Header */ | |
1907 | p_buf->header.length=0xffff; | |
1908 | p_buf->header.opcode=0xff; | |
1909 | p_buf->header.flag=CLAW_PENDING; | |
1910 | ||
4811fcb7 AR |
1911 | if (((unsigned long)p_buff+privptr->p_env->read_size) >= |
1912 | ((unsigned long)(p_buff+2*(privptr->p_env->read_size) | |
1913 | -1) | |
1914 | & PAGE_MASK)) { | |
1da177e4 LT |
1915 | p_buff= p_buff+privptr->p_env->read_size; |
1916 | } | |
1917 | else { | |
1918 | p_buff= | |
1919 | (void *)((unsigned long) | |
4811fcb7 | 1920 | (p_buff+2*(privptr->p_env->read_size)-1) |
1da177e4 LT |
1921 | & PAGE_MASK) ; |
1922 | } | |
1923 | } /* for read_buffers */ | |
1924 | } /* read_size < PAGE_SIZE */ | |
1925 | else { /* read Size >= PAGE_SIZE */ | |
1da177e4 LT |
1926 | for (i=0 ; i< privptr->p_env->read_buffers ; i++) { |
1927 | p_buff = (void *)__get_free_pages(__GFP_DMA, | |
4811fcb7 AR |
1928 | (int)pages_to_order_of_mag( |
1929 | privptr->p_buff_pages_perread)); | |
1da177e4 | 1930 | if (p_buff==NULL) { |
1da177e4 | 1931 | free_pages((unsigned long)privptr->p_buff_ccw, |
4811fcb7 AR |
1932 | (int)pages_to_order_of_mag(privptr-> |
1933 | p_buff_ccw_num)); | |
1da177e4 LT |
1934 | /* free the write pages */ |
1935 | p_buf=privptr->p_buff_write; | |
1936 | while (p_buf!=NULL) { | |
4811fcb7 AR |
1937 | free_pages( |
1938 | (unsigned long)p_buf->p_buffer, | |
1939 | (int)pages_to_order_of_mag( | |
1940 | privptr->p_buff_pages_perwrite)); | |
1da177e4 LT |
1941 | p_buf=p_buf->next; |
1942 | } | |
1943 | /* free any read pages already alloc */ | |
1944 | p_buf=privptr->p_buff_read; | |
1945 | while (p_buf!=NULL) { | |
4811fcb7 AR |
1946 | free_pages( |
1947 | (unsigned long)p_buf->p_buffer, | |
1948 | (int)pages_to_order_of_mag( | |
1949 | privptr->p_buff_pages_perread)); | |
1da177e4 LT |
1950 | p_buf=p_buf->next; |
1951 | } | |
1952 | privptr->p_buff_ccw=NULL; | |
1953 | privptr->p_buff_write=NULL; | |
1da177e4 LT |
1954 | return -ENOMEM; |
1955 | } | |
1956 | memset(p_buff, 0x00, privptr->p_env->read_size); | |
1957 | p_buf = p_free_chain; | |
1958 | privptr->p_buff_read = p_buf; | |
1959 | p_free_chain = p_buf->next; | |
1960 | ||
1961 | if (p_last_CCWB==NULL) { | |
1962 | p_buf->next=NULL; | |
1963 | real_TIC_address=0; | |
1964 | p_last_CCWB=p_buf; | |
1965 | } | |
1966 | else { | |
1967 | p_buf->next=p_first_CCWB; | |
1968 | real_TIC_address= | |
1969 | (addr_t)__pa( | |
1970 | &p_first_CCWB -> read ); | |
1971 | } | |
1972 | ||
1973 | p_first_CCWB=p_buf; | |
1974 | /* save buff address */ | |
1975 | p_buf->p_buffer=(struct clawbuf *)p_buff; | |
1976 | /* initialize read command */ | |
1977 | p_buf-> read.cmd_code = CCW_CLAW_CMD_READ; | |
1978 | p_buf-> read.cda = (__u32)__pa(p_buff); | |
1979 | p_buf-> read.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1980 | p_buf-> read.count = privptr->p_env->read_size; | |
1981 | ||
1982 | /* initialize read_h command */ | |
1983 | p_buf-> read_h.cmd_code = CCW_CLAW_CMD_READHEADER; | |
1984 | p_buf-> read_h.cda = | |
1985 | (__u32)__pa(&(p_buf->header)); | |
1986 | p_buf-> read_h.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1987 | p_buf-> read_h.count = sizeof(struct clawh); | |
1988 | ||
1989 | /* initialize Signal command */ | |
1990 | p_buf-> signal.cmd_code = CCW_CLAW_CMD_SIGNAL_SMOD; | |
1991 | p_buf-> signal.cda = | |
1992 | (__u32)__pa(&(pClawH->flag)); | |
1993 | p_buf-> signal.flags = CCW_FLAG_SLI | CCW_FLAG_CC; | |
1994 | p_buf-> signal.count = 1; | |
1995 | ||
1996 | /* initialize r_TIC_1 command */ | |
1997 | p_buf-> r_TIC_1.cmd_code = CCW_CLAW_CMD_TIC; | |
1998 | p_buf-> r_TIC_1.cda = (__u32)real_TIC_address; | |
1999 | p_buf-> r_TIC_1.flags = 0; | |
2000 | p_buf-> r_TIC_1.count = 0; | |
2001 | ||
2002 | /* initialize r_read_FF command */ | |
2003 | p_buf-> r_read_FF.cmd_code = CCW_CLAW_CMD_READFF; | |
2004 | p_buf-> r_read_FF.cda = | |
2005 | (__u32)__pa(&(pClawH->flag)); | |
2006 | p_buf-> r_read_FF.flags = | |
2007 | CCW_FLAG_SLI | CCW_FLAG_CC | CCW_FLAG_PCI; | |
2008 | p_buf-> r_read_FF.count = 1; | |
2009 | ||
2010 | /* initialize r_TIC_2 */ | |
2011 | memcpy(&p_buf->r_TIC_2, &p_buf->r_TIC_1, | |
2012 | sizeof(struct ccw1)); | |
2013 | ||
2014 | /* initialize Header */ | |
2015 | p_buf->header.length=0xffff; | |
2016 | p_buf->header.opcode=0xff; | |
2017 | p_buf->header.flag=CLAW_PENDING; | |
2018 | ||
2019 | } /* For read_buffers */ | |
2020 | } /* read_size >= PAGE_SIZE */ | |
2021 | } /* pBuffread = NULL */ | |
1da177e4 LT |
2022 | add_claw_reads( dev ,p_first_CCWB , p_last_CCWB); |
2023 | privptr->buffs_alloc = 1; | |
b805da74 | 2024 | |
1da177e4 LT |
2025 | return 0; |
2026 | } /* end of init_ccw_bk */ | |
2027 | ||
2028 | /*-------------------------------------------------------------------* | |
2029 | * * | |
2030 | * probe_error * | |
2031 | * * | |
2032 | *--------------------------------------------------------------------*/ | |
2033 | ||
2034 | static void | |
2035 | probe_error( struct ccwgroup_device *cgdev) | |
2036 | { | |
2b356b46 | 2037 | struct claw_privbk *privptr; |
b805da74 AR |
2038 | |
2039 | CLAW_DBF_TEXT(4, trace, "proberr"); | |
dff59b64 | 2040 | privptr = dev_get_drvdata(&cgdev->dev); |
2b356b46 | 2041 | if (privptr != NULL) { |
dff59b64 | 2042 | dev_set_drvdata(&cgdev->dev, NULL); |
17fd682e | 2043 | kfree(privptr->p_env); |
2b356b46 MS |
2044 | kfree(privptr->p_mtc_envelope); |
2045 | kfree(privptr); | |
2046 | } | |
1da177e4 LT |
2047 | } /* probe_error */ |
2048 | ||
1da177e4 LT |
2049 | /*-------------------------------------------------------------------* |
2050 | * claw_process_control * | |
2051 | * * | |
2052 | * * | |
2053 | *--------------------------------------------------------------------*/ | |
2054 | ||
2055 | static int | |
2056 | claw_process_control( struct net_device *dev, struct ccwbk * p_ccw) | |
2057 | { | |
2058 | ||
2059 | struct clawbuf *p_buf; | |
2060 | struct clawctl ctlbk; | |
2061 | struct clawctl *p_ctlbk; | |
2062 | char temp_host_name[8]; | |
2063 | char temp_ws_name[8]; | |
2064 | struct claw_privbk *privptr; | |
2065 | struct claw_env *p_env; | |
2066 | struct sysval *p_sysval; | |
2067 | struct conncmd *p_connect=NULL; | |
2068 | int rc; | |
2069 | struct chbk *p_ch = NULL; | |
b805da74 AR |
2070 | struct device *tdev; |
2071 | CLAW_DBF_TEXT(2, setup, "clw_cntl"); | |
1da177e4 LT |
2072 | udelay(1000); /* Wait a ms for the control packets to |
2073 | *catch up to each other */ | |
6951df34 | 2074 | privptr = dev->ml_priv; |
1da177e4 | 2075 | p_env=privptr->p_env; |
319cb083 | 2076 | tdev = &privptr->channel[READ_CHANNEL].cdev->dev; |
1da177e4 LT |
2077 | memcpy( &temp_host_name, p_env->host_name, 8); |
2078 | memcpy( &temp_ws_name, p_env->adapter_name , 8); | |
4811fcb7 | 2079 | dev_info(tdev, "%s: CLAW device %.8s: " |
1da177e4 LT |
2080 | "Received Control Packet\n", |
2081 | dev->name, temp_ws_name); | |
2082 | if (privptr->release_pend==1) { | |
1da177e4 LT |
2083 | return 0; |
2084 | } | |
2085 | p_buf=p_ccw->p_buffer; | |
2086 | p_ctlbk=&ctlbk; | |
2087 | if (p_env->packing == DO_PACKED) { /* packing in progress?*/ | |
2088 | memcpy(p_ctlbk, &p_buf->buffer[4], sizeof(struct clawctl)); | |
2089 | } else { | |
2090 | memcpy(p_ctlbk, p_buf, sizeof(struct clawctl)); | |
2091 | } | |
1da177e4 LT |
2092 | switch (p_ctlbk->command) |
2093 | { | |
b805da74 AR |
2094 | case SYSTEM_VALIDATE_REQUEST: |
2095 | if (p_ctlbk->version != CLAW_VERSION_ID) { | |
2096 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2097 | CLAW_RC_WRONG_VERSION); | |
4811fcb7 AR |
2098 | dev_warn(tdev, "The communication peer of %s" |
2099 | " uses an incorrect API version %d\n", | |
2100 | dev->name, p_ctlbk->version); | |
b805da74 AR |
2101 | } |
2102 | p_sysval = (struct sysval *)&(p_ctlbk->data); | |
4811fcb7 AR |
2103 | dev_info(tdev, "%s: Recv Sys Validate Request: " |
2104 | "Vers=%d,link_id=%d,Corr=%d,WS name=%.8s," | |
2105 | "Host name=%.8s\n", | |
2106 | dev->name, p_ctlbk->version, | |
2107 | p_ctlbk->linkid, | |
2108 | p_ctlbk->correlator, | |
2109 | p_sysval->WS_name, | |
2110 | p_sysval->host_name); | |
b805da74 AR |
2111 | if (memcmp(temp_host_name, p_sysval->host_name, 8)) { |
2112 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2113 | CLAW_RC_NAME_MISMATCH); | |
2114 | CLAW_DBF_TEXT(2, setup, "HSTBAD"); | |
2115 | CLAW_DBF_TEXT_(2, setup, "%s", p_sysval->host_name); | |
2116 | CLAW_DBF_TEXT_(2, setup, "%s", temp_host_name); | |
4811fcb7 AR |
2117 | dev_warn(tdev, |
2118 | "Host name %s for %s does not match the" | |
2119 | " remote adapter name %s\n", | |
b805da74 | 2120 | p_sysval->host_name, |
4811fcb7 | 2121 | dev->name, |
b805da74 AR |
2122 | temp_host_name); |
2123 | } | |
2124 | if (memcmp(temp_ws_name, p_sysval->WS_name, 8)) { | |
2125 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2126 | CLAW_RC_NAME_MISMATCH); | |
2127 | CLAW_DBF_TEXT(2, setup, "WSNBAD"); | |
2128 | CLAW_DBF_TEXT_(2, setup, "%s", p_sysval->WS_name); | |
2129 | CLAW_DBF_TEXT_(2, setup, "%s", temp_ws_name); | |
4811fcb7 AR |
2130 | dev_warn(tdev, "Adapter name %s for %s does not match" |
2131 | " the remote host name %s\n", | |
2132 | p_sysval->WS_name, | |
2133 | dev->name, | |
2134 | temp_ws_name); | |
b805da74 AR |
2135 | } |
2136 | if ((p_sysval->write_frame_size < p_env->write_size) && | |
2137 | (p_env->packing == 0)) { | |
2138 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2139 | CLAW_RC_HOST_RCV_TOO_SMALL); | |
4811fcb7 AR |
2140 | dev_warn(tdev, |
2141 | "The local write buffer is smaller than the" | |
2142 | " remote read buffer\n"); | |
b805da74 AR |
2143 | CLAW_DBF_TEXT(2, setup, "wrtszbad"); |
2144 | } | |
2145 | if ((p_sysval->read_frame_size < p_env->read_size) && | |
2146 | (p_env->packing == 0)) { | |
2147 | claw_snd_sys_validate_rsp(dev, p_ctlbk, | |
2148 | CLAW_RC_HOST_RCV_TOO_SMALL); | |
4811fcb7 AR |
2149 | dev_warn(tdev, |
2150 | "The local read buffer is smaller than the" | |
2151 | " remote write buffer\n"); | |
b805da74 AR |
2152 | CLAW_DBF_TEXT(2, setup, "rdsizbad"); |
2153 | } | |
2154 | claw_snd_sys_validate_rsp(dev, p_ctlbk, 0); | |
4811fcb7 AR |
2155 | dev_info(tdev, |
2156 | "CLAW device %.8s: System validate" | |
2157 | " completed.\n", temp_ws_name); | |
2158 | dev_info(tdev, | |
2159 | "%s: sys Validate Rsize:%d Wsize:%d\n", | |
2160 | dev->name, p_sysval->read_frame_size, | |
2161 | p_sysval->write_frame_size); | |
b805da74 AR |
2162 | privptr->system_validate_comp = 1; |
2163 | if (strncmp(p_env->api_type, WS_APPL_NAME_PACKED, 6) == 0) | |
2164 | p_env->packing = PACKING_ASK; | |
2165 | claw_strt_conn_req(dev); | |
2166 | break; | |
2167 | case SYSTEM_VALIDATE_RESPONSE: | |
2168 | p_sysval = (struct sysval *)&(p_ctlbk->data); | |
4811fcb7 AR |
2169 | dev_info(tdev, |
2170 | "Settings for %s validated (version=%d, " | |
2171 | "remote device=%d, rc=%d, adapter name=%.8s, " | |
2172 | "host name=%.8s)\n", | |
b805da74 AR |
2173 | dev->name, |
2174 | p_ctlbk->version, | |
2175 | p_ctlbk->correlator, | |
2176 | p_ctlbk->rc, | |
2177 | p_sysval->WS_name, | |
2178 | p_sysval->host_name); | |
2179 | switch (p_ctlbk->rc) { | |
2180 | case 0: | |
4811fcb7 AR |
2181 | dev_info(tdev, "%s: CLAW device " |
2182 | "%.8s: System validate completed.\n", | |
2183 | dev->name, temp_ws_name); | |
b805da74 AR |
2184 | if (privptr->system_validate_comp == 0) |
2185 | claw_strt_conn_req(dev); | |
2186 | privptr->system_validate_comp = 1; | |
2187 | break; | |
2188 | case CLAW_RC_NAME_MISMATCH: | |
4811fcb7 AR |
2189 | dev_warn(tdev, "Validating %s failed because of" |
2190 | " a host or adapter name mismatch\n", | |
2191 | dev->name); | |
b805da74 AR |
2192 | break; |
2193 | case CLAW_RC_WRONG_VERSION: | |
4811fcb7 AR |
2194 | dev_warn(tdev, "Validating %s failed because of a" |
2195 | " version conflict\n", | |
b805da74 AR |
2196 | dev->name); |
2197 | break; | |
2198 | case CLAW_RC_HOST_RCV_TOO_SMALL: | |
4811fcb7 AR |
2199 | dev_warn(tdev, "Validating %s failed because of a" |
2200 | " frame size conflict\n", | |
b805da74 AR |
2201 | dev->name); |
2202 | break; | |
2203 | default: | |
4811fcb7 AR |
2204 | dev_warn(tdev, "The communication peer of %s rejected" |
2205 | " the connection\n", | |
2206 | dev->name); | |
b805da74 AR |
2207 | break; |
2208 | } | |
2209 | break; | |
1da177e4 | 2210 | |
b805da74 AR |
2211 | case CONNECTION_REQUEST: |
2212 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
4811fcb7 | 2213 | dev_info(tdev, "%s: Recv Conn Req: Vers=%d,link_id=%d," |
b805da74 AR |
2214 | "Corr=%d,HOST appl=%.8s,WS appl=%.8s\n", |
2215 | dev->name, | |
2216 | p_ctlbk->version, | |
2217 | p_ctlbk->linkid, | |
2218 | p_ctlbk->correlator, | |
2219 | p_connect->host_name, | |
2220 | p_connect->WS_name); | |
2221 | if (privptr->active_link_ID != 0) { | |
2222 | claw_snd_disc(dev, p_ctlbk); | |
4811fcb7 AR |
2223 | dev_info(tdev, "%s rejected a connection request" |
2224 | " because it is already active\n", | |
b805da74 AR |
2225 | dev->name); |
2226 | } | |
2227 | if (p_ctlbk->linkid != 1) { | |
2228 | claw_snd_disc(dev, p_ctlbk); | |
4811fcb7 AR |
2229 | dev_info(tdev, "%s rejected a request to open multiple" |
2230 | " connections\n", | |
b805da74 AR |
2231 | dev->name); |
2232 | } | |
2233 | rc = find_link(dev, p_connect->host_name, p_connect->WS_name); | |
2234 | if (rc != 0) { | |
2235 | claw_snd_disc(dev, p_ctlbk); | |
4811fcb7 AR |
2236 | dev_info(tdev, "%s rejected a connection request" |
2237 | " because of a type mismatch\n", | |
b805da74 AR |
2238 | dev->name); |
2239 | } | |
2240 | claw_send_control(dev, | |
2241 | CONNECTION_CONFIRM, p_ctlbk->linkid, | |
2242 | p_ctlbk->correlator, | |
2243 | 0, p_connect->host_name, | |
2244 | p_connect->WS_name); | |
2245 | if (p_env->packing == PACKING_ASK) { | |
2246 | p_env->packing = PACK_SEND; | |
2247 | claw_snd_conn_req(dev, 0); | |
2248 | } | |
4811fcb7 | 2249 | dev_info(tdev, "%s: CLAW device %.8s: Connection " |
b805da74 AR |
2250 | "completed link_id=%d.\n", |
2251 | dev->name, temp_ws_name, | |
2252 | p_ctlbk->linkid); | |
2253 | privptr->active_link_ID = p_ctlbk->linkid; | |
319cb083 | 2254 | p_ch = &privptr->channel[WRITE_CHANNEL]; |
b805da74 AR |
2255 | wake_up(&p_ch->wait); /* wake up claw_open ( WRITE) */ |
2256 | break; | |
2257 | case CONNECTION_RESPONSE: | |
2258 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
4811fcb7 | 2259 | dev_info(tdev, "%s: Recv Conn Resp: Vers=%d,link_id=%d," |
b805da74 AR |
2260 | "Corr=%d,RC=%d,Host appl=%.8s, WS appl=%.8s\n", |
2261 | dev->name, | |
2262 | p_ctlbk->version, | |
2263 | p_ctlbk->linkid, | |
2264 | p_ctlbk->correlator, | |
2265 | p_ctlbk->rc, | |
2266 | p_connect->host_name, | |
2267 | p_connect->WS_name); | |
2268 | ||
2269 | if (p_ctlbk->rc != 0) { | |
4811fcb7 AR |
2270 | dev_warn(tdev, "The communication peer of %s rejected" |
2271 | " a connection request\n", | |
2272 | dev->name); | |
b805da74 AR |
2273 | return 1; |
2274 | } | |
2275 | rc = find_link(dev, | |
2276 | p_connect->host_name, p_connect->WS_name); | |
2277 | if (rc != 0) { | |
2278 | claw_snd_disc(dev, p_ctlbk); | |
4811fcb7 AR |
2279 | dev_warn(tdev, "The communication peer of %s" |
2280 | " rejected a connection " | |
2281 | "request because of a type mismatch\n", | |
b805da74 AR |
2282 | dev->name); |
2283 | } | |
2284 | /* should be until CONNECTION_CONFIRM */ | |
2285 | privptr->active_link_ID = -(p_ctlbk->linkid); | |
2286 | break; | |
2287 | case CONNECTION_CONFIRM: | |
2288 | p_connect = (struct conncmd *)&(p_ctlbk->data); | |
4811fcb7 AR |
2289 | dev_info(tdev, |
2290 | "%s: Recv Conn Confirm:Vers=%d,link_id=%d," | |
b805da74 AR |
2291 | "Corr=%d,Host appl=%.8s,WS appl=%.8s\n", |
2292 | dev->name, | |
2293 | p_ctlbk->version, | |
2294 | p_ctlbk->linkid, | |
2295 | p_ctlbk->correlator, | |
2296 | p_connect->host_name, | |
2297 | p_connect->WS_name); | |
2298 | if (p_ctlbk->linkid == -(privptr->active_link_ID)) { | |
2299 | privptr->active_link_ID = p_ctlbk->linkid; | |
2300 | if (p_env->packing > PACKING_ASK) { | |
4811fcb7 AR |
2301 | dev_info(tdev, |
2302 | "%s: Confirmed Now packing\n", dev->name); | |
1da177e4 LT |
2303 | p_env->packing = DO_PACKED; |
2304 | } | |
319cb083 | 2305 | p_ch = &privptr->channel[WRITE_CHANNEL]; |
b805da74 AR |
2306 | wake_up(&p_ch->wait); |
2307 | } else { | |
4811fcb7 AR |
2308 | dev_warn(tdev, "Activating %s failed because of" |
2309 | " an incorrect link ID=%d\n", | |
b805da74 AR |
2310 | dev->name, p_ctlbk->linkid); |
2311 | claw_snd_disc(dev, p_ctlbk); | |
2312 | } | |
2313 | break; | |
2314 | case DISCONNECT: | |
4811fcb7 | 2315 | dev_info(tdev, "%s: Disconnect: " |
b805da74 AR |
2316 | "Vers=%d,link_id=%d,Corr=%d\n", |
2317 | dev->name, p_ctlbk->version, | |
2318 | p_ctlbk->linkid, p_ctlbk->correlator); | |
2319 | if ((p_ctlbk->linkid == 2) && | |
2320 | (p_env->packing == PACK_SEND)) { | |
2321 | privptr->active_link_ID = 1; | |
2322 | p_env->packing = DO_PACKED; | |
2323 | } else | |
2324 | privptr->active_link_ID = 0; | |
2325 | break; | |
2326 | case CLAW_ERROR: | |
4811fcb7 | 2327 | dev_warn(tdev, "The communication peer of %s failed\n", |
b805da74 AR |
2328 | dev->name); |
2329 | break; | |
2330 | default: | |
4811fcb7 AR |
2331 | dev_warn(tdev, "The communication peer of %s sent" |
2332 | " an unknown command code\n", | |
2333 | dev->name); | |
b805da74 | 2334 | break; |
1da177e4 LT |
2335 | } |
2336 | ||
1da177e4 LT |
2337 | return 0; |
2338 | } /* end of claw_process_control */ | |
2339 | ||
2340 | ||
2341 | /*-------------------------------------------------------------------* | |
2342 | * claw_send_control * | |
2343 | * * | |
2344 | *--------------------------------------------------------------------*/ | |
2345 | ||
2346 | static int | |
2347 | claw_send_control(struct net_device *dev, __u8 type, __u8 link, | |
2348 | __u8 correlator, __u8 rc, char *local_name, char *remote_name) | |
2349 | { | |
2350 | struct claw_privbk *privptr; | |
2351 | struct clawctl *p_ctl; | |
2352 | struct sysval *p_sysval; | |
2353 | struct conncmd *p_connect; | |
2354 | struct sk_buff *skb; | |
2355 | ||
b805da74 | 2356 | CLAW_DBF_TEXT(2, setup, "sndcntl"); |
6951df34 | 2357 | privptr = dev->ml_priv; |
1da177e4 LT |
2358 | p_ctl=(struct clawctl *)&privptr->ctl_bk; |
2359 | ||
2360 | p_ctl->command=type; | |
2361 | p_ctl->version=CLAW_VERSION_ID; | |
2362 | p_ctl->linkid=link; | |
2363 | p_ctl->correlator=correlator; | |
2364 | p_ctl->rc=rc; | |
2365 | ||
2366 | p_sysval=(struct sysval *)&p_ctl->data; | |
2367 | p_connect=(struct conncmd *)&p_ctl->data; | |
2368 | ||
2369 | switch (p_ctl->command) { | |
2370 | case SYSTEM_VALIDATE_REQUEST: | |
2371 | case SYSTEM_VALIDATE_RESPONSE: | |
2372 | memcpy(&p_sysval->host_name, local_name, 8); | |
2373 | memcpy(&p_sysval->WS_name, remote_name, 8); | |
2374 | if (privptr->p_env->packing > 0) { | |
4811fcb7 AR |
2375 | p_sysval->read_frame_size = DEF_PACK_BUFSIZE; |
2376 | p_sysval->write_frame_size = DEF_PACK_BUFSIZE; | |
1da177e4 | 2377 | } else { |
b805da74 | 2378 | /* how big is the biggest group of packets */ |
4811fcb7 AR |
2379 | p_sysval->read_frame_size = |
2380 | privptr->p_env->read_size; | |
2381 | p_sysval->write_frame_size = | |
2382 | privptr->p_env->write_size; | |
1da177e4 LT |
2383 | } |
2384 | memset(&p_sysval->reserved, 0x00, 4); | |
2385 | break; | |
2386 | case CONNECTION_REQUEST: | |
2387 | case CONNECTION_RESPONSE: | |
2388 | case CONNECTION_CONFIRM: | |
2389 | case DISCONNECT: | |
2390 | memcpy(&p_sysval->host_name, local_name, 8); | |
2391 | memcpy(&p_sysval->WS_name, remote_name, 8); | |
2392 | if (privptr->p_env->packing > 0) { | |
2393 | /* How big is the biggest packet */ | |
2394 | p_connect->reserved1[0]=CLAW_FRAME_SIZE; | |
2395 | p_connect->reserved1[1]=CLAW_FRAME_SIZE; | |
2396 | } else { | |
2397 | memset(&p_connect->reserved1, 0x00, 4); | |
2398 | memset(&p_connect->reserved2, 0x00, 4); | |
2399 | } | |
2400 | break; | |
2401 | default: | |
2402 | break; | |
2403 | } | |
2404 | ||
2405 | /* write Control Record to the device */ | |
2406 | ||
2407 | ||
2408 | skb = dev_alloc_skb(sizeof(struct clawctl)); | |
2409 | if (!skb) { | |
1da177e4 LT |
2410 | return -ENOMEM; |
2411 | } | |
2412 | memcpy(skb_put(skb, sizeof(struct clawctl)), | |
2413 | p_ctl, sizeof(struct clawctl)); | |
1da177e4 LT |
2414 | if (privptr->p_env->packing >= PACK_SEND) |
2415 | claw_hw_tx(skb, dev, 1); | |
2416 | else | |
2417 | claw_hw_tx(skb, dev, 0); | |
1da177e4 LT |
2418 | return 0; |
2419 | } /* end of claw_send_control */ | |
2420 | ||
2421 | /*-------------------------------------------------------------------* | |
2422 | * claw_snd_conn_req * | |
2423 | * * | |
2424 | *--------------------------------------------------------------------*/ | |
2425 | static int | |
2426 | claw_snd_conn_req(struct net_device *dev, __u8 link) | |
2427 | { | |
2428 | int rc; | |
6951df34 | 2429 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 LT |
2430 | struct clawctl *p_ctl; |
2431 | ||
b805da74 | 2432 | CLAW_DBF_TEXT(2, setup, "snd_conn"); |
1da177e4 LT |
2433 | rc = 1; |
2434 | p_ctl=(struct clawctl *)&privptr->ctl_bk; | |
2435 | p_ctl->linkid = link; | |
2436 | if ( privptr->system_validate_comp==0x00 ) { | |
1da177e4 LT |
2437 | return rc; |
2438 | } | |
2439 | if (privptr->p_env->packing == PACKING_ASK ) | |
2440 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2441 | WS_APPL_NAME_PACKED, WS_APPL_NAME_PACKED); | |
2442 | if (privptr->p_env->packing == PACK_SEND) { | |
2443 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2444 | WS_APPL_NAME_IP_NAME, WS_APPL_NAME_IP_NAME); | |
2445 | } | |
2446 | if (privptr->p_env->packing == 0) | |
2447 | rc=claw_send_control(dev, CONNECTION_REQUEST,0,0,0, | |
2448 | HOST_APPL_NAME, privptr->p_env->api_type); | |
1da177e4 LT |
2449 | return rc; |
2450 | ||
2451 | } /* end of claw_snd_conn_req */ | |
2452 | ||
2453 | ||
2454 | /*-------------------------------------------------------------------* | |
2455 | * claw_snd_disc * | |
2456 | * * | |
2457 | *--------------------------------------------------------------------*/ | |
2458 | ||
2459 | static int | |
2460 | claw_snd_disc(struct net_device *dev, struct clawctl * p_ctl) | |
2461 | { | |
2462 | int rc; | |
2463 | struct conncmd * p_connect; | |
2464 | ||
b805da74 | 2465 | CLAW_DBF_TEXT(2, setup, "snd_dsc"); |
1da177e4 LT |
2466 | p_connect=(struct conncmd *)&p_ctl->data; |
2467 | ||
2468 | rc=claw_send_control(dev, DISCONNECT, p_ctl->linkid, | |
2469 | p_ctl->correlator, 0, | |
2470 | p_connect->host_name, p_connect->WS_name); | |
1da177e4 LT |
2471 | return rc; |
2472 | } /* end of claw_snd_disc */ | |
2473 | ||
2474 | ||
2475 | /*-------------------------------------------------------------------* | |
2476 | * claw_snd_sys_validate_rsp * | |
2477 | * * | |
2478 | *--------------------------------------------------------------------*/ | |
2479 | ||
2480 | static int | |
2481 | claw_snd_sys_validate_rsp(struct net_device *dev, | |
2482 | struct clawctl *p_ctl, __u32 return_code) | |
2483 | { | |
2484 | struct claw_env * p_env; | |
2485 | struct claw_privbk *privptr; | |
2486 | int rc; | |
2487 | ||
b805da74 | 2488 | CLAW_DBF_TEXT(2, setup, "chkresp"); |
6951df34 | 2489 | privptr = dev->ml_priv; |
1da177e4 LT |
2490 | p_env=privptr->p_env; |
2491 | rc=claw_send_control(dev, SYSTEM_VALIDATE_RESPONSE, | |
2492 | p_ctl->linkid, | |
2493 | p_ctl->correlator, | |
2494 | return_code, | |
2495 | p_env->host_name, | |
2496 | p_env->adapter_name ); | |
1da177e4 LT |
2497 | return rc; |
2498 | } /* end of claw_snd_sys_validate_rsp */ | |
2499 | ||
2500 | /*-------------------------------------------------------------------* | |
2501 | * claw_strt_conn_req * | |
2502 | * * | |
2503 | *--------------------------------------------------------------------*/ | |
2504 | ||
2505 | static int | |
2506 | claw_strt_conn_req(struct net_device *dev ) | |
2507 | { | |
2508 | int rc; | |
2509 | ||
b805da74 | 2510 | CLAW_DBF_TEXT(2, setup, "conn_req"); |
1da177e4 | 2511 | rc=claw_snd_conn_req(dev, 1); |
1da177e4 LT |
2512 | return rc; |
2513 | } /* end of claw_strt_conn_req */ | |
2514 | ||
2515 | ||
2516 | ||
2517 | /*-------------------------------------------------------------------* | |
2518 | * claw_stats * | |
2519 | *-------------------------------------------------------------------*/ | |
2520 | ||
2521 | static struct | |
2522 | net_device_stats *claw_stats(struct net_device *dev) | |
2523 | { | |
2524 | struct claw_privbk *privptr; | |
b805da74 AR |
2525 | |
2526 | CLAW_DBF_TEXT(4, trace, "stats"); | |
6951df34 | 2527 | privptr = dev->ml_priv; |
1da177e4 LT |
2528 | return &privptr->stats; |
2529 | } /* end of claw_stats */ | |
2530 | ||
2531 | ||
2532 | /*-------------------------------------------------------------------* | |
2533 | * unpack_read * | |
2534 | * * | |
2535 | *--------------------------------------------------------------------*/ | |
2536 | static void | |
2537 | unpack_read(struct net_device *dev ) | |
2538 | { | |
2539 | struct sk_buff *skb; | |
2540 | struct claw_privbk *privptr; | |
2541 | struct claw_env *p_env; | |
2542 | struct ccwbk *p_this_ccw; | |
2543 | struct ccwbk *p_first_ccw; | |
2544 | struct ccwbk *p_last_ccw; | |
2545 | struct clawph *p_packh; | |
2546 | void *p_packd; | |
2547 | struct clawctl *p_ctlrec=NULL; | |
b805da74 | 2548 | struct device *p_dev; |
1da177e4 LT |
2549 | |
2550 | __u32 len_of_data; | |
2551 | __u32 pack_off; | |
2552 | __u8 link_num; | |
2553 | __u8 mtc_this_frm=0; | |
2554 | __u32 bytes_to_mov; | |
1da177e4 LT |
2555 | int i=0; |
2556 | int p=0; | |
2557 | ||
b805da74 | 2558 | CLAW_DBF_TEXT(4, trace, "unpkread"); |
1da177e4 LT |
2559 | p_first_ccw=NULL; |
2560 | p_last_ccw=NULL; | |
2561 | p_packh=NULL; | |
2562 | p_packd=NULL; | |
6951df34 | 2563 | privptr = dev->ml_priv; |
b805da74 | 2564 | |
319cb083 | 2565 | p_dev = &privptr->channel[READ_CHANNEL].cdev->dev; |
1da177e4 LT |
2566 | p_env = privptr->p_env; |
2567 | p_this_ccw=privptr->p_read_active_first; | |
1da177e4 | 2568 | while (p_this_ccw!=NULL && p_this_ccw->header.flag!=CLAW_PENDING) { |
1da177e4 LT |
2569 | pack_off = 0; |
2570 | p = 0; | |
2571 | p_this_ccw->header.flag=CLAW_PENDING; | |
2572 | privptr->p_read_active_first=p_this_ccw->next; | |
2573 | p_this_ccw->next=NULL; | |
2574 | p_packh = (struct clawph *)p_this_ccw->p_buffer; | |
2575 | if ((p_env->packing == PACK_SEND) && | |
2576 | (p_packh->len == 32) && | |
2577 | (p_packh->link_num == 0)) { /* is it a packed ctl rec? */ | |
2578 | p_packh++; /* peek past pack header */ | |
2579 | p_ctlrec = (struct clawctl *)p_packh; | |
2580 | p_packh--; /* un peek */ | |
2581 | if ((p_ctlrec->command == CONNECTION_RESPONSE) || | |
2582 | (p_ctlrec->command == CONNECTION_CONFIRM)) | |
2583 | p_env->packing = DO_PACKED; | |
2584 | } | |
2585 | if (p_env->packing == DO_PACKED) | |
2586 | link_num=p_packh->link_num; | |
2587 | else | |
2588 | link_num=p_this_ccw->header.opcode / 8; | |
2589 | if ((p_this_ccw->header.opcode & MORE_to_COME_FLAG)!=0) { | |
1da177e4 LT |
2590 | mtc_this_frm=1; |
2591 | if (p_this_ccw->header.length!= | |
2592 | privptr->p_env->read_size ) { | |
4811fcb7 AR |
2593 | dev_warn(p_dev, |
2594 | "The communication peer of %s" | |
2595 | " sent a faulty" | |
2596 | " frame of length %02x\n", | |
1da177e4 LT |
2597 | dev->name, p_this_ccw->header.length); |
2598 | } | |
2599 | } | |
2600 | ||
2601 | if (privptr->mtc_skipping) { | |
2602 | /* | |
2603 | * We're in the mode of skipping past a | |
2604 | * multi-frame message | |
2605 | * that we can't process for some reason or other. | |
2606 | * The first frame without the More-To-Come flag is | |
2607 | * the last frame of the skipped message. | |
2608 | */ | |
2609 | /* in case of More-To-Come not set in this frame */ | |
2610 | if (mtc_this_frm==0) { | |
2611 | privptr->mtc_skipping=0; /* Ok, the end */ | |
2612 | privptr->mtc_logical_link=-1; | |
2613 | } | |
1da177e4 LT |
2614 | goto NextFrame; |
2615 | } | |
2616 | ||
2617 | if (link_num==0) { | |
2618 | claw_process_control(dev, p_this_ccw); | |
b805da74 | 2619 | CLAW_DBF_TEXT(4, trace, "UnpkCntl"); |
1da177e4 LT |
2620 | goto NextFrame; |
2621 | } | |
2622 | unpack_next: | |
2623 | if (p_env->packing == DO_PACKED) { | |
2624 | if (pack_off > p_env->read_size) | |
2625 | goto NextFrame; | |
2626 | p_packd = p_this_ccw->p_buffer+pack_off; | |
2627 | p_packh = (struct clawph *) p_packd; | |
4811fcb7 | 2628 | if ((p_packh->len == 0) || /* done with this frame? */ |
1da177e4 LT |
2629 | (p_packh->flag != 0)) |
2630 | goto NextFrame; | |
2631 | bytes_to_mov = p_packh->len; | |
2632 | pack_off += bytes_to_mov+sizeof(struct clawph); | |
2633 | p++; | |
2634 | } else { | |
2635 | bytes_to_mov=p_this_ccw->header.length; | |
2636 | } | |
2637 | if (privptr->mtc_logical_link<0) { | |
1da177e4 LT |
2638 | |
2639 | /* | |
2640 | * if More-To-Come is set in this frame then we don't know | |
2641 | * length of entire message, and hence have to allocate | |
2642 | * large buffer */ | |
2643 | ||
2644 | /* We are starting a new envelope */ | |
2645 | privptr->mtc_offset=0; | |
2646 | privptr->mtc_logical_link=link_num; | |
2647 | } | |
2648 | ||
2649 | if (bytes_to_mov > (MAX_ENVELOPE_SIZE- privptr->mtc_offset) ) { | |
2650 | /* error */ | |
1da177e4 LT |
2651 | privptr->stats.rx_frame_errors++; |
2652 | goto NextFrame; | |
2653 | } | |
2654 | if (p_env->packing == DO_PACKED) { | |
2655 | memcpy( privptr->p_mtc_envelope+ privptr->mtc_offset, | |
2656 | p_packd+sizeof(struct clawph), bytes_to_mov); | |
2657 | ||
2658 | } else { | |
2659 | memcpy( privptr->p_mtc_envelope+ privptr->mtc_offset, | |
2660 | p_this_ccw->p_buffer, bytes_to_mov); | |
2661 | } | |
1da177e4 LT |
2662 | if (mtc_this_frm==0) { |
2663 | len_of_data=privptr->mtc_offset+bytes_to_mov; | |
2664 | skb=dev_alloc_skb(len_of_data); | |
2665 | if (skb) { | |
2666 | memcpy(skb_put(skb,len_of_data), | |
2667 | privptr->p_mtc_envelope, | |
2668 | len_of_data); | |
1da177e4 | 2669 | skb->dev=dev; |
98e399f8 | 2670 | skb_reset_mac_header(skb); |
1da177e4 LT |
2671 | skb->protocol=htons(ETH_P_IP); |
2672 | skb->ip_summed=CHECKSUM_UNNECESSARY; | |
2673 | privptr->stats.rx_packets++; | |
2674 | privptr->stats.rx_bytes+=len_of_data; | |
2675 | netif_rx(skb); | |
1da177e4 LT |
2676 | } |
2677 | else { | |
4811fcb7 AR |
2678 | dev_info(p_dev, "Allocating a buffer for" |
2679 | " incoming data failed\n"); | |
1da177e4 | 2680 | privptr->stats.rx_dropped++; |
1da177e4 LT |
2681 | } |
2682 | privptr->mtc_offset=0; | |
2683 | privptr->mtc_logical_link=-1; | |
2684 | } | |
2685 | else { | |
2686 | privptr->mtc_offset+=bytes_to_mov; | |
2687 | } | |
2688 | if (p_env->packing == DO_PACKED) | |
2689 | goto unpack_next; | |
2690 | NextFrame: | |
2691 | /* | |
2692 | * Remove ThisCCWblock from active read queue, and add it | |
2693 | * to queue of free blocks to be reused. | |
2694 | */ | |
2695 | i++; | |
2696 | p_this_ccw->header.length=0xffff; | |
2697 | p_this_ccw->header.opcode=0xff; | |
2698 | /* | |
2699 | * add this one to the free queue for later reuse | |
2700 | */ | |
2701 | if (p_first_ccw==NULL) { | |
2702 | p_first_ccw = p_this_ccw; | |
2703 | } | |
2704 | else { | |
2705 | p_last_ccw->next = p_this_ccw; | |
2706 | } | |
2707 | p_last_ccw = p_this_ccw; | |
2708 | /* | |
2709 | * chain to next block on active read queue | |
2710 | */ | |
2711 | p_this_ccw = privptr->p_read_active_first; | |
b805da74 | 2712 | CLAW_DBF_TEXT_(4, trace, "rxpkt %d", p); |
1da177e4 LT |
2713 | } /* end of while */ |
2714 | ||
2715 | /* check validity */ | |
2716 | ||
b805da74 | 2717 | CLAW_DBF_TEXT_(4, trace, "rxfrm %d", i); |
1da177e4 | 2718 | add_claw_reads(dev, p_first_ccw, p_last_ccw); |
1da177e4 | 2719 | claw_strt_read(dev, LOCK_YES); |
1da177e4 LT |
2720 | return; |
2721 | } /* end of unpack_read */ | |
2722 | ||
2723 | /*-------------------------------------------------------------------* | |
2724 | * claw_strt_read * | |
2725 | * * | |
2726 | *--------------------------------------------------------------------*/ | |
2727 | static void | |
2728 | claw_strt_read (struct net_device *dev, int lock ) | |
2729 | { | |
2730 | int rc = 0; | |
2731 | __u32 parm; | |
2732 | unsigned long saveflags = 0; | |
6951df34 | 2733 | struct claw_privbk *privptr = dev->ml_priv; |
1da177e4 LT |
2734 | struct ccwbk*p_ccwbk; |
2735 | struct chbk *p_ch; | |
2736 | struct clawh *p_clawh; | |
319cb083 | 2737 | p_ch = &privptr->channel[READ_CHANNEL]; |
1da177e4 | 2738 | |
b805da74 | 2739 | CLAW_DBF_TEXT(4, trace, "StRdNter"); |
1da177e4 LT |
2740 | p_clawh=(struct clawh *)privptr->p_claw_signal_blk; |
2741 | p_clawh->flag=CLAW_IDLE; /* 0x00 */ | |
2742 | ||
2743 | if ((privptr->p_write_active_first!=NULL && | |
2744 | privptr->p_write_active_first->header.flag!=CLAW_PENDING) || | |
2745 | (privptr->p_read_active_first!=NULL && | |
2746 | privptr->p_read_active_first->header.flag!=CLAW_PENDING )) { | |
2747 | p_clawh->flag=CLAW_BUSY; /* 0xff */ | |
2748 | } | |
1da177e4 LT |
2749 | if (lock==LOCK_YES) { |
2750 | spin_lock_irqsave(get_ccwdev_lock(p_ch->cdev), saveflags); | |
2751 | } | |
2752 | if (test_and_set_bit(0, (void *)&p_ch->IO_active) == 0) { | |
b805da74 | 2753 | CLAW_DBF_TEXT(4, trace, "HotRead"); |
1da177e4 LT |
2754 | p_ccwbk=privptr->p_read_active_first; |
2755 | parm = (unsigned long) p_ch; | |
2756 | rc = ccw_device_start (p_ch->cdev, &p_ccwbk->read, parm, | |
2757 | 0xff, 0); | |
2758 | if (rc != 0) { | |
2759 | ccw_check_return_code(p_ch->cdev, rc); | |
2760 | } | |
2761 | } | |
2762 | else { | |
b805da74 | 2763 | CLAW_DBF_TEXT(2, trace, "ReadAct"); |
1da177e4 LT |
2764 | } |
2765 | ||
2766 | if (lock==LOCK_YES) { | |
2767 | spin_unlock_irqrestore(get_ccwdev_lock(p_ch->cdev), saveflags); | |
2768 | } | |
b805da74 | 2769 | CLAW_DBF_TEXT(4, trace, "StRdExit"); |
1da177e4 LT |
2770 | return; |
2771 | } /* end of claw_strt_read */ | |
2772 | ||
2773 | /*-------------------------------------------------------------------* | |
2774 | * claw_strt_out_IO * | |
2775 | * * | |
2776 | *--------------------------------------------------------------------*/ | |
2777 | ||
2778 | static void | |
2779 | claw_strt_out_IO( struct net_device *dev ) | |
2780 | { | |
2781 | int rc = 0; | |
2782 | unsigned long parm; | |
2783 | struct claw_privbk *privptr; | |
2784 | struct chbk *p_ch; | |
2785 | struct ccwbk *p_first_ccw; | |
2786 | ||
1da177e4 LT |
2787 | if (!dev) { |
2788 | return; | |
2789 | } | |
6951df34 | 2790 | privptr = (struct claw_privbk *)dev->ml_priv; |
319cb083 | 2791 | p_ch = &privptr->channel[WRITE_CHANNEL]; |
1da177e4 | 2792 | |
b805da74 | 2793 | CLAW_DBF_TEXT(4, trace, "strt_io"); |
1da177e4 LT |
2794 | p_first_ccw=privptr->p_write_active_first; |
2795 | ||
2796 | if (p_ch->claw_state == CLAW_STOP) | |
2797 | return; | |
2798 | if (p_first_ccw == NULL) { | |
1da177e4 LT |
2799 | return; |
2800 | } | |
2801 | if (test_and_set_bit(0, (void *)&p_ch->IO_active) == 0) { | |
2802 | parm = (unsigned long) p_ch; | |
b805da74 | 2803 | CLAW_DBF_TEXT(2, trace, "StWrtIO"); |
4811fcb7 AR |
2804 | rc = ccw_device_start(p_ch->cdev, &p_first_ccw->write, parm, |
2805 | 0xff, 0); | |
1da177e4 LT |
2806 | if (rc != 0) { |
2807 | ccw_check_return_code(p_ch->cdev, rc); | |
2808 | } | |
2809 | } | |
2810 | dev->trans_start = jiffies; | |
1da177e4 LT |
2811 | return; |
2812 | } /* end of claw_strt_out_IO */ | |
2813 | ||
2814 | /*-------------------------------------------------------------------* | |
2815 | * Free write buffers * | |
2816 | * * | |
2817 | *--------------------------------------------------------------------*/ | |
2818 | ||
2819 | static void | |
2820 | claw_free_wrt_buf( struct net_device *dev ) | |
2821 | { | |
2822 | ||
6951df34 | 2823 | struct claw_privbk *privptr = (struct claw_privbk *)dev->ml_priv; |
1da177e4 LT |
2824 | struct ccwbk*p_first_ccw; |
2825 | struct ccwbk*p_last_ccw; | |
2826 | struct ccwbk*p_this_ccw; | |
2827 | struct ccwbk*p_next_ccw; | |
b805da74 AR |
2828 | |
2829 | CLAW_DBF_TEXT(4, trace, "freewrtb"); | |
1da177e4 LT |
2830 | /* scan the write queue to free any completed write packets */ |
2831 | p_first_ccw=NULL; | |
2832 | p_last_ccw=NULL; | |
1da177e4 LT |
2833 | p_this_ccw=privptr->p_write_active_first; |
2834 | while ( (p_this_ccw!=NULL) && (p_this_ccw->header.flag!=CLAW_PENDING)) | |
2835 | { | |
2836 | p_next_ccw = p_this_ccw->next; | |
2837 | if (((p_next_ccw!=NULL) && | |
2838 | (p_next_ccw->header.flag!=CLAW_PENDING)) || | |
2839 | ((p_this_ccw == privptr->p_write_active_last) && | |
2840 | (p_this_ccw->header.flag!=CLAW_PENDING))) { | |
2841 | /* The next CCW is OK or this is */ | |
2842 | /* the last CCW...free it @A1A */ | |
2843 | privptr->p_write_active_first=p_this_ccw->next; | |
2844 | p_this_ccw->header.flag=CLAW_PENDING; | |
2845 | p_this_ccw->next=privptr->p_write_free_chain; | |
2846 | privptr->p_write_free_chain=p_this_ccw; | |
2847 | ++privptr->write_free_count; | |
2848 | privptr->stats.tx_bytes+= p_this_ccw->write.count; | |
2849 | p_this_ccw=privptr->p_write_active_first; | |
2850 | privptr->stats.tx_packets++; | |
2851 | } | |
2852 | else { | |
2853 | break; | |
2854 | } | |
2855 | } | |
2856 | if (privptr->write_free_count!=0) { | |
2857 | claw_clearbit_busy(TB_NOBUFFER,dev); | |
2858 | } | |
2859 | /* whole chain removed? */ | |
2860 | if (privptr->p_write_active_first==NULL) { | |
2861 | privptr->p_write_active_last=NULL; | |
1da177e4 | 2862 | } |
b805da74 | 2863 | CLAW_DBF_TEXT_(4, trace, "FWC=%d", privptr->write_free_count); |
1da177e4 LT |
2864 | return; |
2865 | } | |
2866 | ||
2867 | /*-------------------------------------------------------------------* | |
2868 | * claw free netdevice * | |
2869 | * * | |
2870 | *--------------------------------------------------------------------*/ | |
2871 | static void | |
2872 | claw_free_netdevice(struct net_device * dev, int free_dev) | |
2873 | { | |
2874 | struct claw_privbk *privptr; | |
1da177e4 | 2875 | |
b805da74 | 2876 | CLAW_DBF_TEXT(2, setup, "free_dev"); |
1da177e4 LT |
2877 | if (!dev) |
2878 | return; | |
b805da74 | 2879 | CLAW_DBF_TEXT_(2, setup, "%s", dev->name); |
6951df34 | 2880 | privptr = dev->ml_priv; |
1da177e4 LT |
2881 | if (dev->flags & IFF_RUNNING) |
2882 | claw_release(dev); | |
2883 | if (privptr) { | |
319cb083 | 2884 | privptr->channel[READ_CHANNEL].ndev = NULL; /* say it's free */ |
1da177e4 | 2885 | } |
6951df34 | 2886 | dev->ml_priv = NULL; |
1da177e4 LT |
2887 | #ifdef MODULE |
2888 | if (free_dev) { | |
2889 | free_netdev(dev); | |
2890 | } | |
2891 | #endif | |
b805da74 | 2892 | CLAW_DBF_TEXT(2, setup, "free_ok"); |
1da177e4 LT |
2893 | } |
2894 | ||
2895 | /** | |
2896 | * Claw init netdevice | |
2897 | * Initialize everything of the net device except the name and the | |
2898 | * channel structs. | |
2899 | */ | |
2171dc18 FB |
2900 | static const struct net_device_ops claw_netdev_ops = { |
2901 | .ndo_open = claw_open, | |
2902 | .ndo_stop = claw_release, | |
2903 | .ndo_get_stats = claw_stats, | |
2904 | .ndo_start_xmit = claw_tx, | |
2905 | .ndo_change_mtu = claw_change_mtu, | |
2906 | }; | |
2907 | ||
1da177e4 LT |
2908 | static void |
2909 | claw_init_netdevice(struct net_device * dev) | |
2910 | { | |
b805da74 AR |
2911 | CLAW_DBF_TEXT(2, setup, "init_dev"); |
2912 | CLAW_DBF_TEXT_(2, setup, "%s", dev->name); | |
1da177e4 | 2913 | dev->mtu = CLAW_DEFAULT_MTU_SIZE; |
1da177e4 LT |
2914 | dev->hard_header_len = 0; |
2915 | dev->addr_len = 0; | |
2916 | dev->type = ARPHRD_SLIP; | |
2917 | dev->tx_queue_len = 1300; | |
2918 | dev->flags = IFF_POINTOPOINT | IFF_NOARP; | |
2171dc18 | 2919 | dev->netdev_ops = &claw_netdev_ops; |
b805da74 | 2920 | CLAW_DBF_TEXT(2, setup, "initok"); |
1da177e4 LT |
2921 | return; |
2922 | } | |
2923 | ||
2924 | /** | |
2925 | * Init a new channel in the privptr->channel[i]. | |
2926 | * | |
2927 | * @param cdev The ccw_device to be added. | |
2928 | * | |
2929 | * @return 0 on success, !0 on error. | |
2930 | */ | |
2931 | static int | |
2932 | add_channel(struct ccw_device *cdev,int i,struct claw_privbk *privptr) | |
2933 | { | |
2934 | struct chbk *p_ch; | |
dc5bc0ca | 2935 | struct ccw_dev_id dev_id; |
1da177e4 | 2936 | |
2a0217d5 | 2937 | CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cdev->dev)); |
1da177e4 LT |
2938 | privptr->channel[i].flag = i+1; /* Read is 1 Write is 2 */ |
2939 | p_ch = &privptr->channel[i]; | |
2940 | p_ch->cdev = cdev; | |
2a0217d5 | 2941 | snprintf(p_ch->id, CLAW_ID_SIZE, "cl-%s", dev_name(&cdev->dev)); |
dc5bc0ca CH |
2942 | ccw_device_get_id(cdev, &dev_id); |
2943 | p_ch->devno = dev_id.devno; | |
dd00cc48 | 2944 | if ((p_ch->irb = kzalloc(sizeof (struct irb),GFP_KERNEL)) == NULL) { |
1da177e4 LT |
2945 | return -ENOMEM; |
2946 | } | |
1da177e4 LT |
2947 | return 0; |
2948 | } | |
2949 | ||
2950 | ||
2951 | /** | |
2952 | * | |
2953 | * Setup an interface. | |
2954 | * | |
2955 | * @param cgdev Device to be setup. | |
2956 | * | |
2957 | * @returns 0 on success, !0 on failure. | |
2958 | */ | |
2959 | static int | |
2960 | claw_new_device(struct ccwgroup_device *cgdev) | |
2961 | { | |
2962 | struct claw_privbk *privptr; | |
2963 | struct claw_env *p_env; | |
2964 | struct net_device *dev; | |
2965 | int ret; | |
dc5bc0ca | 2966 | struct ccw_dev_id dev_id; |
1da177e4 | 2967 | |
4811fcb7 | 2968 | dev_info(&cgdev->dev, "add for %s\n", |
319cb083 | 2969 | dev_name(&cgdev->cdev[READ_CHANNEL]->dev)); |
b805da74 | 2970 | CLAW_DBF_TEXT(2, setup, "new_dev"); |
dff59b64 | 2971 | privptr = dev_get_drvdata(&cgdev->dev); |
319cb083 HC |
2972 | dev_set_drvdata(&cgdev->cdev[READ_CHANNEL]->dev, privptr); |
2973 | dev_set_drvdata(&cgdev->cdev[WRITE_CHANNEL]->dev, privptr); | |
1da177e4 LT |
2974 | if (!privptr) |
2975 | return -ENODEV; | |
2976 | p_env = privptr->p_env; | |
319cb083 HC |
2977 | ccw_device_get_id(cgdev->cdev[READ_CHANNEL], &dev_id); |
2978 | p_env->devno[READ_CHANNEL] = dev_id.devno; | |
2979 | ccw_device_get_id(cgdev->cdev[WRITE_CHANNEL], &dev_id); | |
2980 | p_env->devno[WRITE_CHANNEL] = dev_id.devno; | |
1da177e4 LT |
2981 | ret = add_channel(cgdev->cdev[0],0,privptr); |
2982 | if (ret == 0) | |
2983 | ret = add_channel(cgdev->cdev[1],1,privptr); | |
2984 | if (ret != 0) { | |
4811fcb7 AR |
2985 | dev_warn(&cgdev->dev, "Creating a CLAW group device" |
2986 | " failed with error code %d\n", ret); | |
b805da74 | 2987 | goto out; |
1da177e4 | 2988 | } |
319cb083 | 2989 | ret = ccw_device_set_online(cgdev->cdev[READ_CHANNEL]); |
1da177e4 | 2990 | if (ret != 0) { |
4811fcb7 AR |
2991 | dev_warn(&cgdev->dev, |
2992 | "Setting the read subchannel online" | |
2993 | " failed with error code %d\n", ret); | |
1da177e4 LT |
2994 | goto out; |
2995 | } | |
319cb083 | 2996 | ret = ccw_device_set_online(cgdev->cdev[WRITE_CHANNEL]); |
1da177e4 | 2997 | if (ret != 0) { |
4811fcb7 AR |
2998 | dev_warn(&cgdev->dev, |
2999 | "Setting the write subchannel online " | |
3000 | "failed with error code %d\n", ret); | |
1da177e4 LT |
3001 | goto out; |
3002 | } | |
3003 | dev = alloc_netdev(0,"claw%d",claw_init_netdevice); | |
3004 | if (!dev) { | |
4811fcb7 AR |
3005 | dev_warn(&cgdev->dev, |
3006 | "Activating the CLAW device failed\n"); | |
1da177e4 LT |
3007 | goto out; |
3008 | } | |
6951df34 | 3009 | dev->ml_priv = privptr; |
dff59b64 | 3010 | dev_set_drvdata(&cgdev->dev, privptr); |
319cb083 HC |
3011 | dev_set_drvdata(&cgdev->cdev[READ_CHANNEL]->dev, privptr); |
3012 | dev_set_drvdata(&cgdev->cdev[WRITE_CHANNEL]->dev, privptr); | |
1da177e4 LT |
3013 | /* sysfs magic */ |
3014 | SET_NETDEV_DEV(dev, &cgdev->dev); | |
3015 | if (register_netdev(dev) != 0) { | |
3016 | claw_free_netdevice(dev, 1); | |
b805da74 | 3017 | CLAW_DBF_TEXT(2, trace, "regfail"); |
1da177e4 LT |
3018 | goto out; |
3019 | } | |
3020 | dev->flags &=~IFF_RUNNING; | |
3021 | if (privptr->buffs_alloc == 0) { | |
3022 | ret=init_ccw_bk(dev); | |
3023 | if (ret !=0) { | |
1da177e4 LT |
3024 | unregister_netdev(dev); |
3025 | claw_free_netdevice(dev,1); | |
b805da74 | 3026 | CLAW_DBF_TEXT(2, trace, "ccwmem"); |
1da177e4 LT |
3027 | goto out; |
3028 | } | |
3029 | } | |
319cb083 HC |
3030 | privptr->channel[READ_CHANNEL].ndev = dev; |
3031 | privptr->channel[WRITE_CHANNEL].ndev = dev; | |
1da177e4 LT |
3032 | privptr->p_env->ndev = dev; |
3033 | ||
4811fcb7 | 3034 | dev_info(&cgdev->dev, "%s:readsize=%d writesize=%d " |
1da177e4 LT |
3035 | "readbuffer=%d writebuffer=%d read=0x%04x write=0x%04x\n", |
3036 | dev->name, p_env->read_size, | |
3037 | p_env->write_size, p_env->read_buffers, | |
319cb083 HC |
3038 | p_env->write_buffers, p_env->devno[READ_CHANNEL], |
3039 | p_env->devno[WRITE_CHANNEL]); | |
4811fcb7 | 3040 | dev_info(&cgdev->dev, "%s:host_name:%.8s, adapter_name " |
1da177e4 LT |
3041 | ":%.8s api_type: %.8s\n", |
3042 | dev->name, p_env->host_name, | |
3043 | p_env->adapter_name , p_env->api_type); | |
3044 | return 0; | |
3045 | out: | |
3046 | ccw_device_set_offline(cgdev->cdev[1]); | |
3047 | ccw_device_set_offline(cgdev->cdev[0]); | |
1da177e4 LT |
3048 | return -ENODEV; |
3049 | } | |
3050 | ||
3051 | static void | |
3052 | claw_purge_skb_queue(struct sk_buff_head *q) | |
3053 | { | |
3054 | struct sk_buff *skb; | |
3055 | ||
b805da74 | 3056 | CLAW_DBF_TEXT(4, trace, "purgque"); |
1da177e4 LT |
3057 | while ((skb = skb_dequeue(q))) { |
3058 | atomic_dec(&skb->users); | |
8e84c801 | 3059 | dev_kfree_skb_any(skb); |
1da177e4 LT |
3060 | } |
3061 | } | |
3062 | ||
3063 | /** | |
3064 | * Shutdown an interface. | |
3065 | * | |
3066 | * @param cgdev Device to be shut down. | |
3067 | * | |
3068 | * @returns 0 on success, !0 on failure. | |
3069 | */ | |
3070 | static int | |
3071 | claw_shutdown_device(struct ccwgroup_device *cgdev) | |
3072 | { | |
3073 | struct claw_privbk *priv; | |
3074 | struct net_device *ndev; | |
3075 | int ret; | |
3076 | ||
b9d3aed7 | 3077 | CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev)); |
dff59b64 | 3078 | priv = dev_get_drvdata(&cgdev->dev); |
1da177e4 LT |
3079 | if (!priv) |
3080 | return -ENODEV; | |
319cb083 | 3081 | ndev = priv->channel[READ_CHANNEL].ndev; |
1da177e4 LT |
3082 | if (ndev) { |
3083 | /* Close the device */ | |
319cb083 | 3084 | dev_info(&cgdev->dev, "%s: shutting down\n", |
4811fcb7 | 3085 | ndev->name); |
1da177e4 LT |
3086 | if (ndev->flags & IFF_RUNNING) |
3087 | ret = claw_release(ndev); | |
3088 | ndev->flags &=~IFF_RUNNING; | |
3089 | unregister_netdev(ndev); | |
6951df34 | 3090 | ndev->ml_priv = NULL; /* cgdev data, not ndev's to free */ |
1da177e4 | 3091 | claw_free_netdevice(ndev, 1); |
319cb083 HC |
3092 | priv->channel[READ_CHANNEL].ndev = NULL; |
3093 | priv->channel[WRITE_CHANNEL].ndev = NULL; | |
1da177e4 LT |
3094 | priv->p_env->ndev = NULL; |
3095 | } | |
3096 | ccw_device_set_offline(cgdev->cdev[1]); | |
3097 | ccw_device_set_offline(cgdev->cdev[0]); | |
3098 | return 0; | |
3099 | } | |
3100 | ||
3101 | static void | |
3102 | claw_remove_device(struct ccwgroup_device *cgdev) | |
3103 | { | |
3104 | struct claw_privbk *priv; | |
3105 | ||
b805da74 | 3106 | BUG_ON(!cgdev); |
b9d3aed7 | 3107 | CLAW_DBF_TEXT_(2, setup, "%s", dev_name(&cgdev->dev)); |
dff59b64 | 3108 | priv = dev_get_drvdata(&cgdev->dev); |
b805da74 | 3109 | BUG_ON(!priv); |
4811fcb7 | 3110 | dev_info(&cgdev->dev, " will be removed.\n"); |
1da177e4 LT |
3111 | if (cgdev->state == CCWGROUP_ONLINE) |
3112 | claw_shutdown_device(cgdev); | |
3113 | claw_remove_files(&cgdev->dev); | |
17fd682e JJ |
3114 | kfree(priv->p_mtc_envelope); |
3115 | priv->p_mtc_envelope=NULL; | |
3116 | kfree(priv->p_env); | |
3117 | priv->p_env=NULL; | |
3118 | kfree(priv->channel[0].irb); | |
3119 | priv->channel[0].irb=NULL; | |
3120 | kfree(priv->channel[1].irb); | |
3121 | priv->channel[1].irb=NULL; | |
1da177e4 | 3122 | kfree(priv); |
dff59b64 | 3123 | dev_set_drvdata(&cgdev->dev, NULL); |
319cb083 HC |
3124 | dev_set_drvdata(&cgdev->cdev[READ_CHANNEL]->dev, NULL); |
3125 | dev_set_drvdata(&cgdev->cdev[WRITE_CHANNEL]->dev, NULL); | |
1da177e4 | 3126 | put_device(&cgdev->dev); |
b805da74 AR |
3127 | |
3128 | return; | |
1da177e4 LT |
3129 | } |
3130 | ||
3131 | ||
3132 | /* | |
3133 | * sysfs attributes | |
3134 | */ | |
3135 | static ssize_t | |
3fd3c0a5 | 3136 | claw_hname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3137 | { |
3138 | struct claw_privbk *priv; | |
3139 | struct claw_env * p_env; | |
3140 | ||
dff59b64 | 3141 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3142 | if (!priv) |
3143 | return -ENODEV; | |
3144 | p_env = priv->p_env; | |
3145 | return sprintf(buf, "%s\n",p_env->host_name); | |
3146 | } | |
3147 | ||
3148 | static ssize_t | |
4811fcb7 AR |
3149 | claw_hname_write(struct device *dev, struct device_attribute *attr, |
3150 | const char *buf, size_t count) | |
1da177e4 LT |
3151 | { |
3152 | struct claw_privbk *priv; | |
3153 | struct claw_env * p_env; | |
3154 | ||
dff59b64 | 3155 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3156 | if (!priv) |
3157 | return -ENODEV; | |
3158 | p_env = priv->p_env; | |
3159 | if (count > MAX_NAME_LEN+1) | |
3160 | return -EINVAL; | |
3161 | memset(p_env->host_name, 0x20, MAX_NAME_LEN); | |
3162 | strncpy(p_env->host_name,buf, count); | |
3163 | p_env->host_name[count-1] = 0x20; /* clear extra 0x0a */ | |
3164 | p_env->host_name[MAX_NAME_LEN] = 0x00; | |
b805da74 AR |
3165 | CLAW_DBF_TEXT(2, setup, "HstnSet"); |
3166 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->host_name); | |
1da177e4 LT |
3167 | |
3168 | return count; | |
3169 | } | |
3170 | ||
3171 | static DEVICE_ATTR(host_name, 0644, claw_hname_show, claw_hname_write); | |
3172 | ||
3173 | static ssize_t | |
3fd3c0a5 | 3174 | claw_adname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3175 | { |
3176 | struct claw_privbk *priv; | |
3177 | struct claw_env * p_env; | |
3178 | ||
dff59b64 | 3179 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3180 | if (!priv) |
3181 | return -ENODEV; | |
3182 | p_env = priv->p_env; | |
b805da74 | 3183 | return sprintf(buf, "%s\n", p_env->adapter_name); |
1da177e4 LT |
3184 | } |
3185 | ||
3186 | static ssize_t | |
4811fcb7 AR |
3187 | claw_adname_write(struct device *dev, struct device_attribute *attr, |
3188 | const char *buf, size_t count) | |
1da177e4 LT |
3189 | { |
3190 | struct claw_privbk *priv; | |
3191 | struct claw_env * p_env; | |
3192 | ||
dff59b64 | 3193 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3194 | if (!priv) |
3195 | return -ENODEV; | |
3196 | p_env = priv->p_env; | |
3197 | if (count > MAX_NAME_LEN+1) | |
3198 | return -EINVAL; | |
3199 | memset(p_env->adapter_name, 0x20, MAX_NAME_LEN); | |
3200 | strncpy(p_env->adapter_name,buf, count); | |
3201 | p_env->adapter_name[count-1] = 0x20; /* clear extra 0x0a */ | |
3202 | p_env->adapter_name[MAX_NAME_LEN] = 0x00; | |
b805da74 AR |
3203 | CLAW_DBF_TEXT(2, setup, "AdnSet"); |
3204 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->adapter_name); | |
1da177e4 LT |
3205 | |
3206 | return count; | |
3207 | } | |
3208 | ||
3209 | static DEVICE_ATTR(adapter_name, 0644, claw_adname_show, claw_adname_write); | |
3210 | ||
3211 | static ssize_t | |
3fd3c0a5 | 3212 | claw_apname_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3213 | { |
3214 | struct claw_privbk *priv; | |
3215 | struct claw_env * p_env; | |
3216 | ||
dff59b64 | 3217 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3218 | if (!priv) |
3219 | return -ENODEV; | |
3220 | p_env = priv->p_env; | |
3221 | return sprintf(buf, "%s\n", | |
3222 | p_env->api_type); | |
3223 | } | |
3224 | ||
3225 | static ssize_t | |
4811fcb7 AR |
3226 | claw_apname_write(struct device *dev, struct device_attribute *attr, |
3227 | const char *buf, size_t count) | |
1da177e4 LT |
3228 | { |
3229 | struct claw_privbk *priv; | |
3230 | struct claw_env * p_env; | |
3231 | ||
dff59b64 | 3232 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3233 | if (!priv) |
3234 | return -ENODEV; | |
3235 | p_env = priv->p_env; | |
3236 | if (count > MAX_NAME_LEN+1) | |
3237 | return -EINVAL; | |
3238 | memset(p_env->api_type, 0x20, MAX_NAME_LEN); | |
3239 | strncpy(p_env->api_type,buf, count); | |
3240 | p_env->api_type[count-1] = 0x20; /* we get a loose 0x0a */ | |
3241 | p_env->api_type[MAX_NAME_LEN] = 0x00; | |
3242 | if(strncmp(p_env->api_type,WS_APPL_NAME_PACKED,6) == 0) { | |
3243 | p_env->read_size=DEF_PACK_BUFSIZE; | |
3244 | p_env->write_size=DEF_PACK_BUFSIZE; | |
3245 | p_env->packing=PACKING_ASK; | |
b805da74 | 3246 | CLAW_DBF_TEXT(2, setup, "PACKING"); |
1da177e4 LT |
3247 | } |
3248 | else { | |
3249 | p_env->packing=0; | |
3250 | p_env->read_size=CLAW_FRAME_SIZE; | |
3251 | p_env->write_size=CLAW_FRAME_SIZE; | |
b805da74 | 3252 | CLAW_DBF_TEXT(2, setup, "ApiSet"); |
1da177e4 | 3253 | } |
b805da74 | 3254 | CLAW_DBF_TEXT_(2, setup, "%s", p_env->api_type); |
1da177e4 LT |
3255 | return count; |
3256 | } | |
3257 | ||
3258 | static DEVICE_ATTR(api_type, 0644, claw_apname_show, claw_apname_write); | |
3259 | ||
3260 | static ssize_t | |
3fd3c0a5 | 3261 | claw_wbuff_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3262 | { |
3263 | struct claw_privbk *priv; | |
3264 | struct claw_env * p_env; | |
3265 | ||
dff59b64 | 3266 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3267 | if (!priv) |
3268 | return -ENODEV; | |
3269 | p_env = priv->p_env; | |
3270 | return sprintf(buf, "%d\n", p_env->write_buffers); | |
3271 | } | |
3272 | ||
3273 | static ssize_t | |
4811fcb7 AR |
3274 | claw_wbuff_write(struct device *dev, struct device_attribute *attr, |
3275 | const char *buf, size_t count) | |
1da177e4 LT |
3276 | { |
3277 | struct claw_privbk *priv; | |
3278 | struct claw_env * p_env; | |
3279 | int nnn,max; | |
3280 | ||
dff59b64 | 3281 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3282 | if (!priv) |
3283 | return -ENODEV; | |
3284 | p_env = priv->p_env; | |
3285 | sscanf(buf, "%i", &nnn); | |
3286 | if (p_env->packing) { | |
3287 | max = 64; | |
3288 | } | |
3289 | else { | |
3290 | max = 512; | |
3291 | } | |
3292 | if ((nnn > max ) || (nnn < 2)) | |
3293 | return -EINVAL; | |
3294 | p_env->write_buffers = nnn; | |
b805da74 AR |
3295 | CLAW_DBF_TEXT(2, setup, "Wbufset"); |
3296 | CLAW_DBF_TEXT_(2, setup, "WB=%d", p_env->write_buffers); | |
1da177e4 LT |
3297 | return count; |
3298 | } | |
3299 | ||
3300 | static DEVICE_ATTR(write_buffer, 0644, claw_wbuff_show, claw_wbuff_write); | |
3301 | ||
3302 | static ssize_t | |
3fd3c0a5 | 3303 | claw_rbuff_show(struct device *dev, struct device_attribute *attr, char *buf) |
1da177e4 LT |
3304 | { |
3305 | struct claw_privbk *priv; | |
3306 | struct claw_env * p_env; | |
3307 | ||
dff59b64 | 3308 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3309 | if (!priv) |
3310 | return -ENODEV; | |
3311 | p_env = priv->p_env; | |
3312 | return sprintf(buf, "%d\n", p_env->read_buffers); | |
3313 | } | |
3314 | ||
3315 | static ssize_t | |
4811fcb7 AR |
3316 | claw_rbuff_write(struct device *dev, struct device_attribute *attr, |
3317 | const char *buf, size_t count) | |
1da177e4 LT |
3318 | { |
3319 | struct claw_privbk *priv; | |
3320 | struct claw_env *p_env; | |
3321 | int nnn,max; | |
3322 | ||
dff59b64 | 3323 | priv = dev_get_drvdata(dev); |
1da177e4 LT |
3324 | if (!priv) |
3325 | return -ENODEV; | |
3326 | p_env = priv->p_env; | |
3327 | sscanf(buf, "%i", &nnn); | |
3328 | if (p_env->packing) { | |
3329 | max = 64; | |
3330 | } | |
3331 | else { | |
3332 | max = 512; | |
3333 | } | |
3334 | if ((nnn > max ) || (nnn < 2)) | |
3335 | return -EINVAL; | |
3336 | p_env->read_buffers = nnn; | |
b805da74 AR |
3337 | CLAW_DBF_TEXT(2, setup, "Rbufset"); |
3338 | CLAW_DBF_TEXT_(2, setup, "RB=%d", p_env->read_buffers); | |
1da177e4 LT |
3339 | return count; |
3340 | } | |
3341 | ||
3342 | static DEVICE_ATTR(read_buffer, 0644, claw_rbuff_show, claw_rbuff_write); | |
3343 | ||
3344 | static struct attribute *claw_attr[] = { | |
3345 | &dev_attr_read_buffer.attr, | |
3346 | &dev_attr_write_buffer.attr, | |
3347 | &dev_attr_adapter_name.attr, | |
3348 | &dev_attr_api_type.attr, | |
3349 | &dev_attr_host_name.attr, | |
3350 | NULL, | |
3351 | }; | |
3352 | ||
3353 | static struct attribute_group claw_attr_group = { | |
3354 | .attrs = claw_attr, | |
3355 | }; | |
3356 | ||
3357 | static int | |
3358 | claw_add_files(struct device *dev) | |
3359 | { | |
b805da74 | 3360 | CLAW_DBF_TEXT(2, setup, "add_file"); |
1da177e4 LT |
3361 | return sysfs_create_group(&dev->kobj, &claw_attr_group); |
3362 | } | |
3363 | ||
3364 | static void | |
3365 | claw_remove_files(struct device *dev) | |
3366 | { | |
b805da74 | 3367 | CLAW_DBF_TEXT(2, setup, "rem_file"); |
1da177e4 LT |
3368 | sysfs_remove_group(&dev->kobj, &claw_attr_group); |
3369 | } | |
3370 | ||
3371 | /*--------------------------------------------------------------------* | |
3372 | * claw_init and cleanup * | |
3373 | *---------------------------------------------------------------------*/ | |
3374 | ||
3375 | static void __exit | |
3376 | claw_cleanup(void) | |
3377 | { | |
0ca8cc6f UB |
3378 | driver_remove_file(&claw_group_driver.driver, |
3379 | &driver_attr_group); | |
3380 | ccwgroup_driver_unregister(&claw_group_driver); | |
3381 | ccw_driver_unregister(&claw_ccw_driver); | |
3382 | root_device_unregister(claw_root_dev); | |
1da177e4 | 3383 | claw_unregister_debug_facility(); |
4811fcb7 | 3384 | pr_info("Driver unloaded\n"); |
1da177e4 LT |
3385 | |
3386 | } | |
3387 | ||
3388 | /** | |
3389 | * Initialize module. | |
3390 | * This is called just after the module is loaded. | |
3391 | * | |
3392 | * @return 0 on success, !0 on error. | |
3393 | */ | |
3394 | static int __init | |
3395 | claw_init(void) | |
3396 | { | |
3397 | int ret = 0; | |
1da177e4 | 3398 | |
4811fcb7 | 3399 | pr_info("Loading %s\n", version); |
1da177e4 LT |
3400 | ret = claw_register_debug_facility(); |
3401 | if (ret) { | |
4811fcb7 AR |
3402 | pr_err("Registering with the S/390 debug feature" |
3403 | " failed with error code %d\n", ret); | |
0ca8cc6f | 3404 | goto out_err; |
1da177e4 | 3405 | } |
b805da74 | 3406 | CLAW_DBF_TEXT(2, setup, "init_mod"); |
d950d177 | 3407 | claw_root_dev = root_device_register("claw"); |
0ca8cc6f UB |
3408 | ret = IS_ERR(claw_root_dev) ? PTR_ERR(claw_root_dev) : 0; |
3409 | if (ret) | |
3410 | goto register_err; | |
3411 | ret = ccw_driver_register(&claw_ccw_driver); | |
3412 | if (ret) | |
3413 | goto ccw_err; | |
3414 | claw_group_driver.driver.groups = claw_group_attr_groups; | |
3415 | ret = ccwgroup_driver_register(&claw_group_driver); | |
3416 | if (ret) | |
3417 | goto ccwgroup_err; | |
3418 | return 0; | |
3419 | ||
3420 | ccwgroup_err: | |
3421 | ccw_driver_unregister(&claw_ccw_driver); | |
3422 | ccw_err: | |
3423 | root_device_unregister(claw_root_dev); | |
3424 | register_err: | |
3425 | CLAW_DBF_TEXT(2, setup, "init_bad"); | |
3426 | claw_unregister_debug_facility(); | |
3427 | out_err: | |
3428 | pr_err("Initializing the claw device driver failed\n"); | |
1da177e4 LT |
3429 | return ret; |
3430 | } | |
3431 | ||
3432 | module_init(claw_init); | |
3433 | module_exit(claw_cleanup); | |
3434 | ||
b805da74 AR |
3435 | MODULE_AUTHOR("Andy Richter <richtera@us.ibm.com>"); |
3436 | MODULE_DESCRIPTION("Linux for System z CLAW Driver\n" \ | |
3437 | "Copyright 2000,2008 IBM Corporation\n"); | |
3438 | MODULE_LICENSE("GPL"); |