2 * linux/drivers/s390/net/lcs.c
4 * Linux for S/390 Lan Channel Station Network Driver
6 * Copyright (C) 1999-2001 IBM Deutschland Entwicklung GmbH,
8 * Author(s): Original Code written by
9 * DJ Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com)
11 * Frank Pavlic (fpavlic@de.ibm.com) and
12 * Martin Schwidefsky <schwidefsky@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #include <linux/module.h>
31 #include <linux/netdevice.h>
32 #include <linux/etherdevice.h>
33 #include <linux/trdevice.h>
34 #include <linux/fddidevice.h>
35 #include <linux/inetdevice.h>
37 #include <linux/igmp.h>
38 #include <linux/delay.h>
42 #include <asm/debug.h>
43 #include <asm/idals.h>
44 #include <asm/timex.h>
45 #include <linux/device.h>
46 #include <asm/ccwgroup.h>
52 #if !defined(CONFIG_NET_ETHERNET) && \
53 !defined(CONFIG_TR) && !defined(CONFIG_FDDI)
54 #error Cannot compile lcs.c without some net devices switched on.
58 * initialization string for output
61 static char version
[] __initdata
= "LCS driver";
62 static char debug_buffer
[255];
67 static void lcs_tasklet(unsigned long);
68 static void lcs_start_kernel_thread(struct lcs_card
*card
);
69 static void lcs_get_frames_cb(struct lcs_channel
*, struct lcs_buffer
*);
70 static int lcs_send_delipm(struct lcs_card
*, struct lcs_ipm_list
*);
73 * Debug Facility Stuff
75 static debug_info_t
*lcs_dbf_setup
;
76 static debug_info_t
*lcs_dbf_trace
;
79 * LCS Debug Facility functions
82 lcs_unregister_debug_facility(void)
85 debug_unregister(lcs_dbf_setup
);
87 debug_unregister(lcs_dbf_trace
);
91 lcs_register_debug_facility(void)
93 lcs_dbf_setup
= debug_register("lcs_setup", 2, 1, 8);
94 lcs_dbf_trace
= debug_register("lcs_trace", 2, 2, 8);
95 if (lcs_dbf_setup
== NULL
|| lcs_dbf_trace
== NULL
) {
96 PRINT_ERR("Not enough memory for debug facility.\n");
97 lcs_unregister_debug_facility();
100 debug_register_view(lcs_dbf_setup
, &debug_hex_ascii_view
);
101 debug_set_level(lcs_dbf_setup
, 2);
102 debug_register_view(lcs_dbf_trace
, &debug_hex_ascii_view
);
103 debug_set_level(lcs_dbf_trace
, 2);
108 * Allocate io buffers.
111 lcs_alloc_channel(struct lcs_channel
*channel
)
115 LCS_DBF_TEXT(2, setup
, "ichalloc");
116 for (cnt
= 0; cnt
< LCS_NUM_BUFFS
; cnt
++) {
117 /* alloc memory fo iobuffer */
118 channel
->iob
[cnt
].data
=
119 kzalloc(LCS_IOBUFFERSIZE
, GFP_DMA
| GFP_KERNEL
);
120 if (channel
->iob
[cnt
].data
== NULL
)
122 channel
->iob
[cnt
].state
= BUF_STATE_EMPTY
;
124 if (cnt
< LCS_NUM_BUFFS
) {
125 /* Not all io buffers could be allocated. */
126 LCS_DBF_TEXT(2, setup
, "echalloc");
128 kfree(channel
->iob
[cnt
].data
);
138 lcs_free_channel(struct lcs_channel
*channel
)
142 LCS_DBF_TEXT(2, setup
, "ichfree");
143 for (cnt
= 0; cnt
< LCS_NUM_BUFFS
; cnt
++) {
144 kfree(channel
->iob
[cnt
].data
);
145 channel
->iob
[cnt
].data
= NULL
;
153 lcs_cleanup_channel(struct lcs_channel
*channel
)
155 LCS_DBF_TEXT(3, setup
, "cleanch");
156 /* Kill write channel tasklets. */
157 tasklet_kill(&channel
->irq_tasklet
);
158 /* Free channel buffers. */
159 lcs_free_channel(channel
);
163 * LCS free memory for card and channels.
166 lcs_free_card(struct lcs_card
*card
)
168 LCS_DBF_TEXT(2, setup
, "remcard");
169 LCS_DBF_HEX(2, setup
, &card
, sizeof(void*));
174 * LCS alloc memory for card and channels
176 static struct lcs_card
*
179 struct lcs_card
*card
;
182 LCS_DBF_TEXT(2, setup
, "alloclcs");
184 card
= kzalloc(sizeof(struct lcs_card
), GFP_KERNEL
| GFP_DMA
);
187 card
->lan_type
= LCS_FRAME_TYPE_AUTO
;
189 card
->lancmd_timeout
= LCS_LANCMD_TIMEOUT_DEFAULT
;
190 /* Allocate io buffers for the read channel. */
191 rc
= lcs_alloc_channel(&card
->read
);
193 LCS_DBF_TEXT(2, setup
, "iccwerr");
197 /* Allocate io buffers for the write channel. */
198 rc
= lcs_alloc_channel(&card
->write
);
200 LCS_DBF_TEXT(2, setup
, "iccwerr");
201 lcs_cleanup_channel(&card
->read
);
206 #ifdef CONFIG_IP_MULTICAST
207 INIT_LIST_HEAD(&card
->ipm_list
);
209 LCS_DBF_HEX(2, setup
, &card
, sizeof(void*));
214 * Setup read channel.
217 lcs_setup_read_ccws(struct lcs_card
*card
)
221 LCS_DBF_TEXT(2, setup
, "ireadccw");
222 /* Setup read ccws. */
223 memset(card
->read
.ccws
, 0, sizeof (struct ccw1
) * (LCS_NUM_BUFFS
+ 1));
224 for (cnt
= 0; cnt
< LCS_NUM_BUFFS
; cnt
++) {
225 card
->read
.ccws
[cnt
].cmd_code
= LCS_CCW_READ
;
226 card
->read
.ccws
[cnt
].count
= LCS_IOBUFFERSIZE
;
227 card
->read
.ccws
[cnt
].flags
=
228 CCW_FLAG_CC
| CCW_FLAG_SLI
| CCW_FLAG_PCI
;
230 * Note: we have allocated the buffer with GFP_DMA, so
231 * we do not need to do set_normalized_cda.
233 card
->read
.ccws
[cnt
].cda
=
234 (__u32
) __pa(card
->read
.iob
[cnt
].data
);
235 ((struct lcs_header
*)
236 card
->read
.iob
[cnt
].data
)->offset
= LCS_ILLEGAL_OFFSET
;
237 card
->read
.iob
[cnt
].callback
= lcs_get_frames_cb
;
238 card
->read
.iob
[cnt
].state
= BUF_STATE_READY
;
239 card
->read
.iob
[cnt
].count
= LCS_IOBUFFERSIZE
;
241 card
->read
.ccws
[0].flags
&= ~CCW_FLAG_PCI
;
242 card
->read
.ccws
[LCS_NUM_BUFFS
- 1].flags
&= ~CCW_FLAG_PCI
;
243 card
->read
.ccws
[LCS_NUM_BUFFS
- 1].flags
|= CCW_FLAG_SUSPEND
;
244 /* Last ccw is a tic (transfer in channel). */
245 card
->read
.ccws
[LCS_NUM_BUFFS
].cmd_code
= LCS_CCW_TRANSFER
;
246 card
->read
.ccws
[LCS_NUM_BUFFS
].cda
=
247 (__u32
) __pa(card
->read
.ccws
);
248 /* Setg initial state of the read channel. */
249 card
->read
.state
= CH_STATE_INIT
;
251 card
->read
.io_idx
= 0;
252 card
->read
.buf_idx
= 0;
256 lcs_setup_read(struct lcs_card
*card
)
258 LCS_DBF_TEXT(3, setup
, "initread");
260 lcs_setup_read_ccws(card
);
261 /* Initialize read channel tasklet. */
262 card
->read
.irq_tasklet
.data
= (unsigned long) &card
->read
;
263 card
->read
.irq_tasklet
.func
= lcs_tasklet
;
264 /* Initialize waitqueue. */
265 init_waitqueue_head(&card
->read
.wait_q
);
269 * Setup write channel.
272 lcs_setup_write_ccws(struct lcs_card
*card
)
276 LCS_DBF_TEXT(3, setup
, "iwritccw");
277 /* Setup write ccws. */
278 memset(card
->write
.ccws
, 0, sizeof(struct ccw1
) * LCS_NUM_BUFFS
+ 1);
279 for (cnt
= 0; cnt
< LCS_NUM_BUFFS
; cnt
++) {
280 card
->write
.ccws
[cnt
].cmd_code
= LCS_CCW_WRITE
;
281 card
->write
.ccws
[cnt
].count
= 0;
282 card
->write
.ccws
[cnt
].flags
=
283 CCW_FLAG_SUSPEND
| CCW_FLAG_CC
| CCW_FLAG_SLI
;
285 * Note: we have allocated the buffer with GFP_DMA, so
286 * we do not need to do set_normalized_cda.
288 card
->write
.ccws
[cnt
].cda
=
289 (__u32
) __pa(card
->write
.iob
[cnt
].data
);
291 /* Last ccw is a tic (transfer in channel). */
292 card
->write
.ccws
[LCS_NUM_BUFFS
].cmd_code
= LCS_CCW_TRANSFER
;
293 card
->write
.ccws
[LCS_NUM_BUFFS
].cda
=
294 (__u32
) __pa(card
->write
.ccws
);
295 /* Set initial state of the write channel. */
296 card
->read
.state
= CH_STATE_INIT
;
298 card
->write
.io_idx
= 0;
299 card
->write
.buf_idx
= 0;
303 lcs_setup_write(struct lcs_card
*card
)
305 LCS_DBF_TEXT(3, setup
, "initwrit");
307 lcs_setup_write_ccws(card
);
308 /* Initialize write channel tasklet. */
309 card
->write
.irq_tasklet
.data
= (unsigned long) &card
->write
;
310 card
->write
.irq_tasklet
.func
= lcs_tasklet
;
311 /* Initialize waitqueue. */
312 init_waitqueue_head(&card
->write
.wait_q
);
316 lcs_set_allowed_threads(struct lcs_card
*card
, unsigned long threads
)
320 spin_lock_irqsave(&card
->mask_lock
, flags
);
321 card
->thread_allowed_mask
= threads
;
322 spin_unlock_irqrestore(&card
->mask_lock
, flags
);
323 wake_up(&card
->wait_q
);
326 lcs_threads_running(struct lcs_card
*card
, unsigned long threads
)
331 spin_lock_irqsave(&card
->mask_lock
, flags
);
332 rc
= (card
->thread_running_mask
& threads
);
333 spin_unlock_irqrestore(&card
->mask_lock
, flags
);
338 lcs_wait_for_threads(struct lcs_card
*card
, unsigned long threads
)
340 return wait_event_interruptible(card
->wait_q
,
341 lcs_threads_running(card
, threads
) == 0);
345 lcs_set_thread_start_bit(struct lcs_card
*card
, unsigned long thread
)
349 spin_lock_irqsave(&card
->mask_lock
, flags
);
350 if ( !(card
->thread_allowed_mask
& thread
) ||
351 (card
->thread_start_mask
& thread
) ) {
352 spin_unlock_irqrestore(&card
->mask_lock
, flags
);
355 card
->thread_start_mask
|= thread
;
356 spin_unlock_irqrestore(&card
->mask_lock
, flags
);
361 lcs_clear_thread_running_bit(struct lcs_card
*card
, unsigned long thread
)
365 spin_lock_irqsave(&card
->mask_lock
, flags
);
366 card
->thread_running_mask
&= ~thread
;
367 spin_unlock_irqrestore(&card
->mask_lock
, flags
);
368 wake_up(&card
->wait_q
);
372 __lcs_do_run_thread(struct lcs_card
*card
, unsigned long thread
)
377 spin_lock_irqsave(&card
->mask_lock
, flags
);
378 if (card
->thread_start_mask
& thread
){
379 if ((card
->thread_allowed_mask
& thread
) &&
380 !(card
->thread_running_mask
& thread
)){
382 card
->thread_start_mask
&= ~thread
;
383 card
->thread_running_mask
|= thread
;
387 spin_unlock_irqrestore(&card
->mask_lock
, flags
);
392 lcs_do_run_thread(struct lcs_card
*card
, unsigned long thread
)
395 wait_event(card
->wait_q
,
396 (rc
= __lcs_do_run_thread(card
, thread
)) >= 0);
401 lcs_do_start_thread(struct lcs_card
*card
, unsigned long thread
)
406 spin_lock_irqsave(&card
->mask_lock
, flags
);
407 LCS_DBF_TEXT_(4, trace
, " %02x%02x%02x",
408 (u8
) card
->thread_start_mask
,
409 (u8
) card
->thread_allowed_mask
,
410 (u8
) card
->thread_running_mask
);
411 rc
= (card
->thread_start_mask
& thread
);
412 spin_unlock_irqrestore(&card
->mask_lock
, flags
);
417 * Initialize channels,card and state machines.
420 lcs_setup_card(struct lcs_card
*card
)
422 LCS_DBF_TEXT(2, setup
, "initcard");
423 LCS_DBF_HEX(2, setup
, &card
, sizeof(void*));
425 lcs_setup_read(card
);
426 lcs_setup_write(card
);
427 /* Set cards initial state. */
428 card
->state
= DEV_STATE_DOWN
;
429 card
->tx_buffer
= NULL
;
430 card
->tx_emitted
= 0;
432 /* Initialize kernel thread task used for LGW commands. */
433 INIT_WORK(&card
->kernel_thread_starter
,
434 (void *)lcs_start_kernel_thread
,card
);
435 card
->thread_start_mask
= 0;
436 card
->thread_allowed_mask
= 0;
437 card
->thread_running_mask
= 0;
438 init_waitqueue_head(&card
->wait_q
);
439 spin_lock_init(&card
->lock
);
440 spin_lock_init(&card
->ipm_lock
);
441 spin_lock_init(&card
->mask_lock
);
442 #ifdef CONFIG_IP_MULTICAST
443 INIT_LIST_HEAD(&card
->ipm_list
);
445 INIT_LIST_HEAD(&card
->lancmd_waiters
);
449 lcs_clear_multicast_list(struct lcs_card
*card
)
451 #ifdef CONFIG_IP_MULTICAST
452 struct lcs_ipm_list
*ipm
;
455 /* Free multicast list. */
456 LCS_DBF_TEXT(3, setup
, "clmclist");
457 spin_lock_irqsave(&card
->ipm_lock
, flags
);
458 while (!list_empty(&card
->ipm_list
)){
459 ipm
= list_entry(card
->ipm_list
.next
,
460 struct lcs_ipm_list
, list
);
461 list_del(&ipm
->list
);
462 if (ipm
->ipm_state
!= LCS_IPM_STATE_SET_REQUIRED
){
463 spin_unlock_irqrestore(&card
->ipm_lock
, flags
);
464 lcs_send_delipm(card
, ipm
);
465 spin_lock_irqsave(&card
->ipm_lock
, flags
);
469 spin_unlock_irqrestore(&card
->ipm_lock
, flags
);
473 * Cleanup channels,card and state machines.
476 lcs_cleanup_card(struct lcs_card
*card
)
479 LCS_DBF_TEXT(3, setup
, "cleancrd");
480 LCS_DBF_HEX(2,setup
,&card
,sizeof(void*));
482 if (card
->dev
!= NULL
)
483 free_netdev(card
->dev
);
484 /* Cleanup channels. */
485 lcs_cleanup_channel(&card
->write
);
486 lcs_cleanup_channel(&card
->read
);
493 lcs_start_channel(struct lcs_channel
*channel
)
498 LCS_DBF_TEXT_(4,trace
,"ssch%s", channel
->ccwdev
->dev
.bus_id
);
499 spin_lock_irqsave(get_ccwdev_lock(channel
->ccwdev
), flags
);
500 rc
= ccw_device_start(channel
->ccwdev
,
501 channel
->ccws
+ channel
->io_idx
, 0, 0,
502 DOIO_DENY_PREFETCH
| DOIO_ALLOW_SUSPEND
);
504 channel
->state
= CH_STATE_RUNNING
;
505 spin_unlock_irqrestore(get_ccwdev_lock(channel
->ccwdev
), flags
);
507 LCS_DBF_TEXT_(4,trace
,"essh%s", channel
->ccwdev
->dev
.bus_id
);
508 PRINT_ERR("Error in starting channel, rc=%d!\n", rc
);
514 lcs_clear_channel(struct lcs_channel
*channel
)
519 LCS_DBF_TEXT(4,trace
,"clearch");
520 LCS_DBF_TEXT_(4,trace
,"%s", channel
->ccwdev
->dev
.bus_id
);
521 spin_lock_irqsave(get_ccwdev_lock(channel
->ccwdev
), flags
);
522 rc
= ccw_device_clear(channel
->ccwdev
, (addr_t
) channel
);
523 spin_unlock_irqrestore(get_ccwdev_lock(channel
->ccwdev
), flags
);
525 LCS_DBF_TEXT_(4,trace
,"ecsc%s", channel
->ccwdev
->dev
.bus_id
);
528 wait_event(channel
->wait_q
, (channel
->state
== CH_STATE_CLEARED
));
529 channel
->state
= CH_STATE_STOPPED
;
538 lcs_stop_channel(struct lcs_channel
*channel
)
543 if (channel
->state
== CH_STATE_STOPPED
)
545 LCS_DBF_TEXT(4,trace
,"haltsch");
546 LCS_DBF_TEXT_(4,trace
,"%s", channel
->ccwdev
->dev
.bus_id
);
547 channel
->state
= CH_STATE_INIT
;
548 spin_lock_irqsave(get_ccwdev_lock(channel
->ccwdev
), flags
);
549 rc
= ccw_device_halt(channel
->ccwdev
, (addr_t
) channel
);
550 spin_unlock_irqrestore(get_ccwdev_lock(channel
->ccwdev
), flags
);
552 LCS_DBF_TEXT_(4,trace
,"ehsc%s", channel
->ccwdev
->dev
.bus_id
);
555 /* Asynchronous halt initialted. Wait for its completion. */
556 wait_event(channel
->wait_q
, (channel
->state
== CH_STATE_HALTED
));
557 lcs_clear_channel(channel
);
562 * start read and write channel
565 lcs_start_channels(struct lcs_card
*card
)
569 LCS_DBF_TEXT(2, trace
, "chstart");
570 /* start read channel */
571 rc
= lcs_start_channel(&card
->read
);
574 /* start write channel */
575 rc
= lcs_start_channel(&card
->write
);
577 lcs_stop_channel(&card
->read
);
582 * stop read and write channel
585 lcs_stop_channels(struct lcs_card
*card
)
587 LCS_DBF_TEXT(2, trace
, "chhalt");
588 lcs_stop_channel(&card
->read
);
589 lcs_stop_channel(&card
->write
);
596 static struct lcs_buffer
*
597 __lcs_get_buffer(struct lcs_channel
*channel
)
601 LCS_DBF_TEXT(5, trace
, "_getbuff");
602 index
= channel
->io_idx
;
604 if (channel
->iob
[index
].state
== BUF_STATE_EMPTY
) {
605 channel
->iob
[index
].state
= BUF_STATE_LOCKED
;
606 return channel
->iob
+ index
;
608 index
= (index
+ 1) & (LCS_NUM_BUFFS
- 1);
609 } while (index
!= channel
->io_idx
);
613 static struct lcs_buffer
*
614 lcs_get_buffer(struct lcs_channel
*channel
)
616 struct lcs_buffer
*buffer
;
619 LCS_DBF_TEXT(5, trace
, "getbuff");
620 spin_lock_irqsave(get_ccwdev_lock(channel
->ccwdev
), flags
);
621 buffer
= __lcs_get_buffer(channel
);
622 spin_unlock_irqrestore(get_ccwdev_lock(channel
->ccwdev
), flags
);
627 * Resume channel program if the channel is suspended.
630 __lcs_resume_channel(struct lcs_channel
*channel
)
634 if (channel
->state
!= CH_STATE_SUSPENDED
)
636 if (channel
->ccws
[channel
->io_idx
].flags
& CCW_FLAG_SUSPEND
)
638 LCS_DBF_TEXT_(5, trace
, "rsch%s", channel
->ccwdev
->dev
.bus_id
);
639 rc
= ccw_device_resume(channel
->ccwdev
);
641 LCS_DBF_TEXT_(4, trace
, "ersc%s", channel
->ccwdev
->dev
.bus_id
);
642 PRINT_ERR("Error in lcs_resume_channel: rc=%d\n",rc
);
644 channel
->state
= CH_STATE_RUNNING
;
650 * Make a buffer ready for processing.
653 __lcs_ready_buffer_bits(struct lcs_channel
*channel
, int index
)
657 LCS_DBF_TEXT(5, trace
, "rdybits");
658 prev
= (index
- 1) & (LCS_NUM_BUFFS
- 1);
659 next
= (index
+ 1) & (LCS_NUM_BUFFS
- 1);
660 /* Check if we may clear the suspend bit of this buffer. */
661 if (channel
->ccws
[next
].flags
& CCW_FLAG_SUSPEND
) {
662 /* Check if we have to set the PCI bit. */
663 if (!(channel
->ccws
[prev
].flags
& CCW_FLAG_SUSPEND
))
664 /* Suspend bit of the previous buffer is not set. */
665 channel
->ccws
[index
].flags
|= CCW_FLAG_PCI
;
666 /* Suspend bit of the next buffer is set. */
667 channel
->ccws
[index
].flags
&= ~CCW_FLAG_SUSPEND
;
672 lcs_ready_buffer(struct lcs_channel
*channel
, struct lcs_buffer
*buffer
)
677 LCS_DBF_TEXT(5, trace
, "rdybuff");
678 BUG_ON(buffer
->state
!= BUF_STATE_LOCKED
&&
679 buffer
->state
!= BUF_STATE_PROCESSED
);
680 spin_lock_irqsave(get_ccwdev_lock(channel
->ccwdev
), flags
);
681 buffer
->state
= BUF_STATE_READY
;
682 index
= buffer
- channel
->iob
;
684 channel
->ccws
[index
].count
= buffer
->count
;
685 /* Check relevant PCI/suspend bits. */
686 __lcs_ready_buffer_bits(channel
, index
);
687 rc
= __lcs_resume_channel(channel
);
688 spin_unlock_irqrestore(get_ccwdev_lock(channel
->ccwdev
), flags
);
693 * Mark the buffer as processed. Take care of the suspend bit
694 * of the previous buffer. This function is called from
695 * interrupt context, so the lock must not be taken.
698 __lcs_processed_buffer(struct lcs_channel
*channel
, struct lcs_buffer
*buffer
)
700 int index
, prev
, next
;
702 LCS_DBF_TEXT(5, trace
, "prcsbuff");
703 BUG_ON(buffer
->state
!= BUF_STATE_READY
);
704 buffer
->state
= BUF_STATE_PROCESSED
;
705 index
= buffer
- channel
->iob
;
706 prev
= (index
- 1) & (LCS_NUM_BUFFS
- 1);
707 next
= (index
+ 1) & (LCS_NUM_BUFFS
- 1);
708 /* Set the suspend bit and clear the PCI bit of this buffer. */
709 channel
->ccws
[index
].flags
|= CCW_FLAG_SUSPEND
;
710 channel
->ccws
[index
].flags
&= ~CCW_FLAG_PCI
;
711 /* Check the suspend bit of the previous buffer. */
712 if (channel
->iob
[prev
].state
== BUF_STATE_READY
) {
714 * Previous buffer is in state ready. It might have
715 * happened in lcs_ready_buffer that the suspend bit
716 * has not been cleared to avoid an endless loop.
719 __lcs_ready_buffer_bits(channel
, prev
);
721 /* Clear PCI bit of next buffer. */
722 channel
->ccws
[next
].flags
&= ~CCW_FLAG_PCI
;
723 return __lcs_resume_channel(channel
);
727 * Put a processed buffer back to state empty.
730 lcs_release_buffer(struct lcs_channel
*channel
, struct lcs_buffer
*buffer
)
734 LCS_DBF_TEXT(5, trace
, "relbuff");
735 BUG_ON(buffer
->state
!= BUF_STATE_LOCKED
&&
736 buffer
->state
!= BUF_STATE_PROCESSED
);
737 spin_lock_irqsave(get_ccwdev_lock(channel
->ccwdev
), flags
);
738 buffer
->state
= BUF_STATE_EMPTY
;
739 spin_unlock_irqrestore(get_ccwdev_lock(channel
->ccwdev
), flags
);
743 * Get buffer for a lan command.
745 static struct lcs_buffer
*
746 lcs_get_lancmd(struct lcs_card
*card
, int count
)
748 struct lcs_buffer
*buffer
;
751 LCS_DBF_TEXT(4, trace
, "getlncmd");
752 /* Get buffer and wait if none is available. */
753 wait_event(card
->write
.wait_q
,
754 ((buffer
= lcs_get_buffer(&card
->write
)) != NULL
));
755 count
+= sizeof(struct lcs_header
);
756 *(__u16
*)(buffer
->data
+ count
) = 0;
757 buffer
->count
= count
+ sizeof(__u16
);
758 buffer
->callback
= lcs_release_buffer
;
759 cmd
= (struct lcs_cmd
*) buffer
->data
;
761 cmd
->type
= LCS_FRAME_TYPE_CONTROL
;
768 lcs_get_reply(struct lcs_reply
*reply
)
770 WARN_ON(atomic_read(&reply
->refcnt
) <= 0);
771 atomic_inc(&reply
->refcnt
);
775 lcs_put_reply(struct lcs_reply
*reply
)
777 WARN_ON(atomic_read(&reply
->refcnt
) <= 0);
778 if (atomic_dec_and_test(&reply
->refcnt
)) {
784 static struct lcs_reply
*
785 lcs_alloc_reply(struct lcs_cmd
*cmd
)
787 struct lcs_reply
*reply
;
789 LCS_DBF_TEXT(4, trace
, "getreply");
791 reply
= kzalloc(sizeof(struct lcs_reply
), GFP_ATOMIC
);
794 atomic_set(&reply
->refcnt
,1);
795 reply
->sequence_no
= cmd
->sequence_no
;
798 init_waitqueue_head(&reply
->wait_q
);
804 * Notifier function for lancmd replies. Called from read irq.
807 lcs_notify_lancmd_waiters(struct lcs_card
*card
, struct lcs_cmd
*cmd
)
809 struct list_head
*l
, *n
;
810 struct lcs_reply
*reply
;
812 LCS_DBF_TEXT(4, trace
, "notiwait");
813 spin_lock(&card
->lock
);
814 list_for_each_safe(l
, n
, &card
->lancmd_waiters
) {
815 reply
= list_entry(l
, struct lcs_reply
, list
);
816 if (reply
->sequence_no
== cmd
->sequence_no
) {
817 lcs_get_reply(reply
);
818 list_del_init(&reply
->list
);
819 if (reply
->callback
!= NULL
)
820 reply
->callback(card
, cmd
);
822 reply
->rc
= cmd
->return_code
;
823 wake_up(&reply
->wait_q
);
824 lcs_put_reply(reply
);
828 spin_unlock(&card
->lock
);
832 * Emit buffer of a lan comand.
835 lcs_lancmd_timeout(unsigned long data
)
837 struct lcs_reply
*reply
, *list_reply
, *r
;
840 LCS_DBF_TEXT(4, trace
, "timeout");
841 reply
= (struct lcs_reply
*) data
;
842 spin_lock_irqsave(&reply
->card
->lock
, flags
);
843 list_for_each_entry_safe(list_reply
, r
,
844 &reply
->card
->lancmd_waiters
,list
) {
845 if (reply
== list_reply
) {
846 lcs_get_reply(reply
);
847 list_del_init(&reply
->list
);
848 spin_unlock_irqrestore(&reply
->card
->lock
, flags
);
851 wake_up(&reply
->wait_q
);
852 lcs_put_reply(reply
);
856 spin_unlock_irqrestore(&reply
->card
->lock
, flags
);
860 lcs_send_lancmd(struct lcs_card
*card
, struct lcs_buffer
*buffer
,
861 void (*reply_callback
)(struct lcs_card
*, struct lcs_cmd
*))
863 struct lcs_reply
*reply
;
865 struct timer_list timer
;
869 LCS_DBF_TEXT(4, trace
, "sendcmd");
870 cmd
= (struct lcs_cmd
*) buffer
->data
;
871 cmd
->return_code
= 0;
872 cmd
->sequence_no
= card
->sequence_no
++;
873 reply
= lcs_alloc_reply(cmd
);
876 reply
->callback
= reply_callback
;
878 spin_lock_irqsave(&card
->lock
, flags
);
879 list_add_tail(&reply
->list
, &card
->lancmd_waiters
);
880 spin_unlock_irqrestore(&card
->lock
, flags
);
882 buffer
->callback
= lcs_release_buffer
;
883 rc
= lcs_ready_buffer(&card
->write
, buffer
);
887 timer
.function
= lcs_lancmd_timeout
;
888 timer
.data
= (unsigned long) reply
;
889 timer
.expires
= jiffies
+ HZ
*card
->lancmd_timeout
;
891 wait_event(reply
->wait_q
, reply
->received
);
892 del_timer_sync(&timer
);
893 LCS_DBF_TEXT_(4, trace
, "rc:%d",reply
->rc
);
895 lcs_put_reply(reply
);
896 return rc
? -EIO
: 0;
900 * LCS startup command
903 lcs_send_startup(struct lcs_card
*card
, __u8 initiator
)
905 struct lcs_buffer
*buffer
;
908 LCS_DBF_TEXT(2, trace
, "startup");
909 buffer
= lcs_get_lancmd(card
, LCS_STD_CMD_SIZE
);
910 cmd
= (struct lcs_cmd
*) buffer
->data
;
911 cmd
->cmd_code
= LCS_CMD_STARTUP
;
912 cmd
->initiator
= initiator
;
913 cmd
->cmd
.lcs_startup
.buff_size
= LCS_IOBUFFERSIZE
;
914 return lcs_send_lancmd(card
, buffer
, NULL
);
918 * LCS shutdown command
921 lcs_send_shutdown(struct lcs_card
*card
)
923 struct lcs_buffer
*buffer
;
926 LCS_DBF_TEXT(2, trace
, "shutdown");
927 buffer
= lcs_get_lancmd(card
, LCS_STD_CMD_SIZE
);
928 cmd
= (struct lcs_cmd
*) buffer
->data
;
929 cmd
->cmd_code
= LCS_CMD_SHUTDOWN
;
930 cmd
->initiator
= LCS_INITIATOR_TCPIP
;
931 return lcs_send_lancmd(card
, buffer
, NULL
);
935 * LCS lanstat command
938 __lcs_lanstat_cb(struct lcs_card
*card
, struct lcs_cmd
*cmd
)
940 LCS_DBF_TEXT(2, trace
, "statcb");
941 memcpy(card
->mac
, cmd
->cmd
.lcs_lanstat_cmd
.mac_addr
, LCS_MAC_LENGTH
);
945 lcs_send_lanstat(struct lcs_card
*card
)
947 struct lcs_buffer
*buffer
;
950 LCS_DBF_TEXT(2,trace
, "cmdstat");
951 buffer
= lcs_get_lancmd(card
, LCS_STD_CMD_SIZE
);
952 cmd
= (struct lcs_cmd
*) buffer
->data
;
953 /* Setup lanstat command. */
954 cmd
->cmd_code
= LCS_CMD_LANSTAT
;
955 cmd
->initiator
= LCS_INITIATOR_TCPIP
;
956 cmd
->cmd
.lcs_std_cmd
.lan_type
= card
->lan_type
;
957 cmd
->cmd
.lcs_std_cmd
.portno
= card
->portno
;
958 return lcs_send_lancmd(card
, buffer
, __lcs_lanstat_cb
);
962 * send stoplan command
965 lcs_send_stoplan(struct lcs_card
*card
, __u8 initiator
)
967 struct lcs_buffer
*buffer
;
970 LCS_DBF_TEXT(2, trace
, "cmdstpln");
971 buffer
= lcs_get_lancmd(card
, LCS_STD_CMD_SIZE
);
972 cmd
= (struct lcs_cmd
*) buffer
->data
;
973 cmd
->cmd_code
= LCS_CMD_STOPLAN
;
974 cmd
->initiator
= initiator
;
975 cmd
->cmd
.lcs_std_cmd
.lan_type
= card
->lan_type
;
976 cmd
->cmd
.lcs_std_cmd
.portno
= card
->portno
;
977 return lcs_send_lancmd(card
, buffer
, NULL
);
981 * send startlan command
984 __lcs_send_startlan_cb(struct lcs_card
*card
, struct lcs_cmd
*cmd
)
986 LCS_DBF_TEXT(2, trace
, "srtlancb");
987 card
->lan_type
= cmd
->cmd
.lcs_std_cmd
.lan_type
;
988 card
->portno
= cmd
->cmd
.lcs_std_cmd
.portno
;
992 lcs_send_startlan(struct lcs_card
*card
, __u8 initiator
)
994 struct lcs_buffer
*buffer
;
997 LCS_DBF_TEXT(2, trace
, "cmdstaln");
998 buffer
= lcs_get_lancmd(card
, LCS_STD_CMD_SIZE
);
999 cmd
= (struct lcs_cmd
*) buffer
->data
;
1000 cmd
->cmd_code
= LCS_CMD_STARTLAN
;
1001 cmd
->initiator
= initiator
;
1002 cmd
->cmd
.lcs_std_cmd
.lan_type
= card
->lan_type
;
1003 cmd
->cmd
.lcs_std_cmd
.portno
= card
->portno
;
1004 return lcs_send_lancmd(card
, buffer
, __lcs_send_startlan_cb
);
1007 #ifdef CONFIG_IP_MULTICAST
1009 * send setipm command (Multicast)
1012 lcs_send_setipm(struct lcs_card
*card
,struct lcs_ipm_list
*ipm_list
)
1014 struct lcs_buffer
*buffer
;
1015 struct lcs_cmd
*cmd
;
1017 LCS_DBF_TEXT(2, trace
, "cmdsetim");
1018 buffer
= lcs_get_lancmd(card
, LCS_MULTICAST_CMD_SIZE
);
1019 cmd
= (struct lcs_cmd
*) buffer
->data
;
1020 cmd
->cmd_code
= LCS_CMD_SETIPM
;
1021 cmd
->initiator
= LCS_INITIATOR_TCPIP
;
1022 cmd
->cmd
.lcs_qipassist
.lan_type
= card
->lan_type
;
1023 cmd
->cmd
.lcs_qipassist
.portno
= card
->portno
;
1024 cmd
->cmd
.lcs_qipassist
.version
= 4;
1025 cmd
->cmd
.lcs_qipassist
.num_ip_pairs
= 1;
1026 memcpy(cmd
->cmd
.lcs_qipassist
.lcs_ipass_ctlmsg
.ip_mac_pair
,
1027 &ipm_list
->ipm
, sizeof (struct lcs_ip_mac_pair
));
1028 LCS_DBF_TEXT_(2, trace
, "%x",ipm_list
->ipm
.ip_addr
);
1029 return lcs_send_lancmd(card
, buffer
, NULL
);
1033 * send delipm command (Multicast)
1036 lcs_send_delipm(struct lcs_card
*card
,struct lcs_ipm_list
*ipm_list
)
1038 struct lcs_buffer
*buffer
;
1039 struct lcs_cmd
*cmd
;
1041 LCS_DBF_TEXT(2, trace
, "cmddelim");
1042 buffer
= lcs_get_lancmd(card
, LCS_MULTICAST_CMD_SIZE
);
1043 cmd
= (struct lcs_cmd
*) buffer
->data
;
1044 cmd
->cmd_code
= LCS_CMD_DELIPM
;
1045 cmd
->initiator
= LCS_INITIATOR_TCPIP
;
1046 cmd
->cmd
.lcs_qipassist
.lan_type
= card
->lan_type
;
1047 cmd
->cmd
.lcs_qipassist
.portno
= card
->portno
;
1048 cmd
->cmd
.lcs_qipassist
.version
= 4;
1049 cmd
->cmd
.lcs_qipassist
.num_ip_pairs
= 1;
1050 memcpy(cmd
->cmd
.lcs_qipassist
.lcs_ipass_ctlmsg
.ip_mac_pair
,
1051 &ipm_list
->ipm
, sizeof (struct lcs_ip_mac_pair
));
1052 LCS_DBF_TEXT_(2, trace
, "%x",ipm_list
->ipm
.ip_addr
);
1053 return lcs_send_lancmd(card
, buffer
, NULL
);
1057 * check if multicast is supported by LCS
1060 __lcs_check_multicast_cb(struct lcs_card
*card
, struct lcs_cmd
*cmd
)
1062 LCS_DBF_TEXT(2, trace
, "chkmccb");
1063 card
->ip_assists_supported
=
1064 cmd
->cmd
.lcs_qipassist
.ip_assists_supported
;
1065 card
->ip_assists_enabled
=
1066 cmd
->cmd
.lcs_qipassist
.ip_assists_enabled
;
1070 lcs_check_multicast_support(struct lcs_card
*card
)
1072 struct lcs_buffer
*buffer
;
1073 struct lcs_cmd
*cmd
;
1076 LCS_DBF_TEXT(2, trace
, "cmdqipa");
1077 /* Send query ipassist. */
1078 buffer
= lcs_get_lancmd(card
, LCS_STD_CMD_SIZE
);
1079 cmd
= (struct lcs_cmd
*) buffer
->data
;
1080 cmd
->cmd_code
= LCS_CMD_QIPASSIST
;
1081 cmd
->initiator
= LCS_INITIATOR_TCPIP
;
1082 cmd
->cmd
.lcs_qipassist
.lan_type
= card
->lan_type
;
1083 cmd
->cmd
.lcs_qipassist
.portno
= card
->portno
;
1084 cmd
->cmd
.lcs_qipassist
.version
= 4;
1085 cmd
->cmd
.lcs_qipassist
.num_ip_pairs
= 1;
1086 rc
= lcs_send_lancmd(card
, buffer
, __lcs_check_multicast_cb
);
1088 PRINT_ERR("Query IPAssist failed. Assuming unsupported!\n");
1091 if (card
->ip_assists_supported
& LCS_IPASS_MULTICAST_SUPPORT
)
1097 * set or del multicast address on LCS card
1100 lcs_fix_multicast_list(struct lcs_card
*card
)
1102 struct list_head failed_list
;
1103 struct lcs_ipm_list
*ipm
, *tmp
;
1104 unsigned long flags
;
1107 LCS_DBF_TEXT(4,trace
, "fixipm");
1108 INIT_LIST_HEAD(&failed_list
);
1109 spin_lock_irqsave(&card
->ipm_lock
, flags
);
1111 list_for_each_entry_safe(ipm
, tmp
, &card
->ipm_list
, list
){
1112 switch (ipm
->ipm_state
) {
1113 case LCS_IPM_STATE_SET_REQUIRED
:
1114 /* del from ipm_list so noone else can tamper with
1116 list_del_init(&ipm
->list
);
1117 spin_unlock_irqrestore(&card
->ipm_lock
, flags
);
1118 rc
= lcs_send_setipm(card
, ipm
);
1119 spin_lock_irqsave(&card
->ipm_lock
, flags
);
1121 PRINT_INFO("Adding multicast address failed."
1122 "Table possibly full!\n");
1123 /* store ipm in failed list -> will be added
1124 * to ipm_list again, so a retry will be done
1125 * during the next call of this function */
1126 list_add_tail(&ipm
->list
, &failed_list
);
1128 ipm
->ipm_state
= LCS_IPM_STATE_ON_CARD
;
1129 /* re-insert into ipm_list */
1130 list_add_tail(&ipm
->list
, &card
->ipm_list
);
1133 case LCS_IPM_STATE_DEL_REQUIRED
:
1134 list_del(&ipm
->list
);
1135 spin_unlock_irqrestore(&card
->ipm_lock
, flags
);
1136 lcs_send_delipm(card
, ipm
);
1137 spin_lock_irqsave(&card
->ipm_lock
, flags
);
1140 case LCS_IPM_STATE_ON_CARD
:
1144 /* re-insert all entries from the failed_list into ipm_list */
1145 list_for_each_entry_safe(ipm
, tmp
, &failed_list
, list
) {
1146 list_del_init(&ipm
->list
);
1147 list_add_tail(&ipm
->list
, &card
->ipm_list
);
1149 spin_unlock_irqrestore(&card
->ipm_lock
, flags
);
1150 if (card
->state
== DEV_STATE_UP
)
1151 netif_wake_queue(card
->dev
);
1155 * get mac address for the relevant Multicast address
1158 lcs_get_mac_for_ipm(__u32 ipm
, char *mac
, struct net_device
*dev
)
1160 LCS_DBF_TEXT(4,trace
, "getmac");
1161 if (dev
->type
== ARPHRD_IEEE802_TR
)
1162 ip_tr_mc_map(ipm
, mac
);
1164 ip_eth_mc_map(ipm
, mac
);
1168 * function called by net device to handle multicast address relevant things
1171 lcs_remove_mc_addresses(struct lcs_card
*card
, struct in_device
*in4_dev
)
1173 struct ip_mc_list
*im4
;
1174 struct list_head
*l
;
1175 struct lcs_ipm_list
*ipm
;
1176 unsigned long flags
;
1177 char buf
[MAX_ADDR_LEN
];
1179 LCS_DBF_TEXT(4, trace
, "remmclst");
1180 spin_lock_irqsave(&card
->ipm_lock
, flags
);
1181 list_for_each(l
, &card
->ipm_list
) {
1182 ipm
= list_entry(l
, struct lcs_ipm_list
, list
);
1183 for (im4
= in4_dev
->mc_list
; im4
!= NULL
; im4
= im4
->next
) {
1184 lcs_get_mac_for_ipm(im4
->multiaddr
, buf
, card
->dev
);
1185 if ( (ipm
->ipm
.ip_addr
== im4
->multiaddr
) &&
1186 (memcmp(buf
, &ipm
->ipm
.mac_addr
,
1187 LCS_MAC_LENGTH
) == 0) )
1191 ipm
->ipm_state
= LCS_IPM_STATE_DEL_REQUIRED
;
1193 spin_unlock_irqrestore(&card
->ipm_lock
, flags
);
1196 static inline struct lcs_ipm_list
*
1197 lcs_check_addr_entry(struct lcs_card
*card
, struct ip_mc_list
*im4
, char *buf
)
1199 struct lcs_ipm_list
*tmp
, *ipm
= NULL
;
1200 struct list_head
*l
;
1201 unsigned long flags
;
1203 LCS_DBF_TEXT(4, trace
, "chkmcent");
1204 spin_lock_irqsave(&card
->ipm_lock
, flags
);
1205 list_for_each(l
, &card
->ipm_list
) {
1206 tmp
= list_entry(l
, struct lcs_ipm_list
, list
);
1207 if ( (tmp
->ipm
.ip_addr
== im4
->multiaddr
) &&
1208 (memcmp(buf
, &tmp
->ipm
.mac_addr
,
1209 LCS_MAC_LENGTH
) == 0) ) {
1214 spin_unlock_irqrestore(&card
->ipm_lock
, flags
);
1219 lcs_set_mc_addresses(struct lcs_card
*card
, struct in_device
*in4_dev
)
1222 struct ip_mc_list
*im4
;
1223 struct lcs_ipm_list
*ipm
;
1224 char buf
[MAX_ADDR_LEN
];
1225 unsigned long flags
;
1227 LCS_DBF_TEXT(4, trace
, "setmclst");
1228 for (im4
= in4_dev
->mc_list
; im4
; im4
= im4
->next
) {
1229 lcs_get_mac_for_ipm(im4
->multiaddr
, buf
, card
->dev
);
1230 ipm
= lcs_check_addr_entry(card
, im4
, buf
);
1232 continue; /* Address already in list. */
1233 ipm
= (struct lcs_ipm_list
*)
1234 kmalloc(sizeof(struct lcs_ipm_list
), GFP_ATOMIC
);
1236 PRINT_INFO("Not enough memory to add "
1237 "new multicast entry!\n");
1240 memset(ipm
, 0, sizeof(struct lcs_ipm_list
));
1241 memcpy(&ipm
->ipm
.mac_addr
, buf
, LCS_MAC_LENGTH
);
1242 ipm
->ipm
.ip_addr
= im4
->multiaddr
;
1243 ipm
->ipm_state
= LCS_IPM_STATE_SET_REQUIRED
;
1244 spin_lock_irqsave(&card
->ipm_lock
, flags
);
1245 list_add(&ipm
->list
, &card
->ipm_list
);
1246 spin_unlock_irqrestore(&card
->ipm_lock
, flags
);
1251 lcs_register_mc_addresses(void *data
)
1253 struct lcs_card
*card
;
1254 struct in_device
*in4_dev
;
1256 card
= (struct lcs_card
*) data
;
1257 daemonize("regipm");
1259 if (!lcs_do_run_thread(card
, LCS_SET_MC_THREAD
))
1261 LCS_DBF_TEXT(4, trace
, "regmulti");
1263 in4_dev
= in_dev_get(card
->dev
);
1264 if (in4_dev
== NULL
)
1266 read_lock(&in4_dev
->mc_list_lock
);
1267 lcs_remove_mc_addresses(card
,in4_dev
);
1268 lcs_set_mc_addresses(card
, in4_dev
);
1269 read_unlock(&in4_dev
->mc_list_lock
);
1270 in_dev_put(in4_dev
);
1272 lcs_fix_multicast_list(card
);
1274 lcs_clear_thread_running_bit(card
, LCS_SET_MC_THREAD
);
1278 * function called by net device to
1279 * handle multicast address relevant things
1282 lcs_set_multicast_list(struct net_device
*dev
)
1284 struct lcs_card
*card
;
1286 LCS_DBF_TEXT(4, trace
, "setmulti");
1287 card
= (struct lcs_card
*) dev
->priv
;
1289 if (!lcs_set_thread_start_bit(card
, LCS_SET_MC_THREAD
))
1290 schedule_work(&card
->kernel_thread_starter
);
1293 #endif /* CONFIG_IP_MULTICAST */
1296 lcs_check_irb_error(struct ccw_device
*cdev
, struct irb
*irb
)
1301 switch (PTR_ERR(irb
)) {
1303 PRINT_WARN("i/o-error on device %s\n", cdev
->dev
.bus_id
);
1304 LCS_DBF_TEXT(2, trace
, "ckirberr");
1305 LCS_DBF_TEXT_(2, trace
, " rc%d", -EIO
);
1308 PRINT_WARN("timeout on device %s\n", cdev
->dev
.bus_id
);
1309 LCS_DBF_TEXT(2, trace
, "ckirberr");
1310 LCS_DBF_TEXT_(2, trace
, " rc%d", -ETIMEDOUT
);
1313 PRINT_WARN("unknown error %ld on device %s\n", PTR_ERR(irb
),
1315 LCS_DBF_TEXT(2, trace
, "ckirberr");
1316 LCS_DBF_TEXT(2, trace
, " rc???");
1318 return PTR_ERR(irb
);
1323 * IRQ Handler for LCS channels
1326 lcs_irq(struct ccw_device
*cdev
, unsigned long intparm
, struct irb
*irb
)
1328 struct lcs_card
*card
;
1329 struct lcs_channel
*channel
;
1332 if (lcs_check_irb_error(cdev
, irb
))
1335 card
= CARD_FROM_DEV(cdev
);
1336 if (card
->read
.ccwdev
== cdev
)
1337 channel
= &card
->read
;
1339 channel
= &card
->write
;
1341 LCS_DBF_TEXT_(5, trace
, "Rint%s",cdev
->dev
.bus_id
);
1342 LCS_DBF_TEXT_(5, trace
, "%4x%4x",irb
->scsw
.cstat
, irb
->scsw
.dstat
);
1343 LCS_DBF_TEXT_(5, trace
, "%4x%4x",irb
->scsw
.fctl
, irb
->scsw
.actl
);
1345 /* How far in the ccw chain have we processed? */
1346 if ((channel
->state
!= CH_STATE_INIT
) &&
1347 (irb
->scsw
.fctl
& SCSW_FCTL_START_FUNC
)) {
1348 index
= (struct ccw1
*) __va((addr_t
) irb
->scsw
.cpa
)
1350 if ((irb
->scsw
.actl
& SCSW_ACTL_SUSPENDED
) ||
1351 (irb
->scsw
.cstat
| SCHN_STAT_PCI
))
1352 /* Bloody io subsystem tells us lies about cpa... */
1353 index
= (index
- 1) & (LCS_NUM_BUFFS
- 1);
1354 while (channel
->io_idx
!= index
) {
1355 __lcs_processed_buffer(channel
,
1356 channel
->iob
+ channel
->io_idx
);
1358 (channel
->io_idx
+ 1) & (LCS_NUM_BUFFS
- 1);
1362 if ((irb
->scsw
.dstat
& DEV_STAT_DEV_END
) ||
1363 (irb
->scsw
.dstat
& DEV_STAT_CHN_END
) ||
1364 (irb
->scsw
.dstat
& DEV_STAT_UNIT_CHECK
))
1365 /* Mark channel as stopped. */
1366 channel
->state
= CH_STATE_STOPPED
;
1367 else if (irb
->scsw
.actl
& SCSW_ACTL_SUSPENDED
)
1368 /* CCW execution stopped on a suspend bit. */
1369 channel
->state
= CH_STATE_SUSPENDED
;
1371 if (irb
->scsw
.fctl
& SCSW_FCTL_HALT_FUNC
) {
1372 if (irb
->scsw
.cc
!= 0) {
1373 ccw_device_halt(channel
->ccwdev
, (addr_t
) channel
);
1376 /* The channel has been stopped by halt_IO. */
1377 channel
->state
= CH_STATE_HALTED
;
1380 if (irb
->scsw
.fctl
& SCSW_FCTL_CLEAR_FUNC
) {
1381 channel
->state
= CH_STATE_CLEARED
;
1383 /* Do the rest in the tasklet. */
1384 tasklet_schedule(&channel
->irq_tasklet
);
1388 * Tasklet for IRQ handler
1391 lcs_tasklet(unsigned long data
)
1393 unsigned long flags
;
1394 struct lcs_channel
*channel
;
1395 struct lcs_buffer
*iob
;
1399 channel
= (struct lcs_channel
*) data
;
1400 LCS_DBF_TEXT_(5, trace
, "tlet%s",channel
->ccwdev
->dev
.bus_id
);
1402 /* Check for processed buffers. */
1404 buf_idx
= channel
->buf_idx
;
1405 while (iob
[buf_idx
].state
== BUF_STATE_PROCESSED
) {
1406 /* Do the callback thing. */
1407 if (iob
[buf_idx
].callback
!= NULL
)
1408 iob
[buf_idx
].callback(channel
, iob
+ buf_idx
);
1409 buf_idx
= (buf_idx
+ 1) & (LCS_NUM_BUFFS
- 1);
1411 channel
->buf_idx
= buf_idx
;
1413 if (channel
->state
== CH_STATE_STOPPED
)
1414 // FIXME: what if rc != 0 ??
1415 rc
= lcs_start_channel(channel
);
1416 spin_lock_irqsave(get_ccwdev_lock(channel
->ccwdev
), flags
);
1417 if (channel
->state
== CH_STATE_SUSPENDED
&&
1418 channel
->iob
[channel
->io_idx
].state
== BUF_STATE_READY
) {
1419 // FIXME: what if rc != 0 ??
1420 rc
= __lcs_resume_channel(channel
);
1422 spin_unlock_irqrestore(get_ccwdev_lock(channel
->ccwdev
), flags
);
1424 /* Something happened on the channel. Wake up waiters. */
1425 wake_up(&channel
->wait_q
);
1429 * Finish current tx buffer and make it ready for transmit.
1432 __lcs_emit_txbuffer(struct lcs_card
*card
)
1434 LCS_DBF_TEXT(5, trace
, "emittx");
1435 *(__u16
*)(card
->tx_buffer
->data
+ card
->tx_buffer
->count
) = 0;
1436 card
->tx_buffer
->count
+= 2;
1437 lcs_ready_buffer(&card
->write
, card
->tx_buffer
);
1438 card
->tx_buffer
= NULL
;
1443 * Callback for finished tx buffers.
1446 lcs_txbuffer_cb(struct lcs_channel
*channel
, struct lcs_buffer
*buffer
)
1448 struct lcs_card
*card
;
1450 LCS_DBF_TEXT(5, trace
, "txbuffcb");
1451 /* Put buffer back to pool. */
1452 lcs_release_buffer(channel
, buffer
);
1453 card
= (struct lcs_card
*)
1454 ((char *) channel
- offsetof(struct lcs_card
, write
));
1455 if (netif_queue_stopped(card
->dev
))
1456 netif_wake_queue(card
->dev
);
1457 spin_lock(&card
->lock
);
1459 if (card
->tx_emitted
<= 0 && card
->tx_buffer
!= NULL
)
1461 * Last running tx buffer has finished. Submit partially
1462 * filled current buffer.
1464 __lcs_emit_txbuffer(card
);
1465 spin_unlock(&card
->lock
);
1469 * Packet transmit function called by network stack
1472 __lcs_start_xmit(struct lcs_card
*card
, struct sk_buff
*skb
,
1473 struct net_device
*dev
)
1475 struct lcs_header
*header
;
1478 LCS_DBF_TEXT(5, trace
, "hardxmit");
1480 card
->stats
.tx_dropped
++;
1481 card
->stats
.tx_errors
++;
1484 if (card
->state
!= DEV_STATE_UP
) {
1486 card
->stats
.tx_dropped
++;
1487 card
->stats
.tx_errors
++;
1488 card
->stats
.tx_carrier_errors
++;
1491 netif_stop_queue(card
->dev
);
1492 spin_lock(&card
->lock
);
1493 if (card
->tx_buffer
!= NULL
&&
1494 card
->tx_buffer
->count
+ sizeof(struct lcs_header
) +
1495 skb
->len
+ sizeof(u16
) > LCS_IOBUFFERSIZE
)
1496 /* skb too big for current tx buffer. */
1497 __lcs_emit_txbuffer(card
);
1498 if (card
->tx_buffer
== NULL
) {
1499 /* Get new tx buffer */
1500 card
->tx_buffer
= lcs_get_buffer(&card
->write
);
1501 if (card
->tx_buffer
== NULL
) {
1502 card
->stats
.tx_dropped
++;
1506 card
->tx_buffer
->callback
= lcs_txbuffer_cb
;
1507 card
->tx_buffer
->count
= 0;
1509 header
= (struct lcs_header
*)
1510 (card
->tx_buffer
->data
+ card
->tx_buffer
->count
);
1511 card
->tx_buffer
->count
+= skb
->len
+ sizeof(struct lcs_header
);
1512 header
->offset
= card
->tx_buffer
->count
;
1513 header
->type
= card
->lan_type
;
1514 header
->slot
= card
->portno
;
1515 memcpy(header
+ 1, skb
->data
, skb
->len
);
1516 spin_unlock(&card
->lock
);
1517 card
->stats
.tx_bytes
+= skb
->len
;
1518 card
->stats
.tx_packets
++;
1520 netif_wake_queue(card
->dev
);
1521 spin_lock(&card
->lock
);
1522 if (card
->tx_emitted
<= 0 && card
->tx_buffer
!= NULL
)
1523 /* If this is the first tx buffer emit it immediately. */
1524 __lcs_emit_txbuffer(card
);
1526 spin_unlock(&card
->lock
);
1531 lcs_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
1533 struct lcs_card
*card
;
1536 LCS_DBF_TEXT(5, trace
, "pktxmit");
1537 card
= (struct lcs_card
*) dev
->priv
;
1538 rc
= __lcs_start_xmit(card
, skb
, dev
);
1543 * send startlan and lanstat command to make LCS device ready
1546 lcs_startlan_auto(struct lcs_card
*card
)
1550 LCS_DBF_TEXT(2, trace
, "strtauto");
1551 #ifdef CONFIG_NET_ETHERNET
1552 card
->lan_type
= LCS_FRAME_TYPE_ENET
;
1553 rc
= lcs_send_startlan(card
, LCS_INITIATOR_TCPIP
);
1559 card
->lan_type
= LCS_FRAME_TYPE_TR
;
1560 rc
= lcs_send_startlan(card
, LCS_INITIATOR_TCPIP
);
1565 card
->lan_type
= LCS_FRAME_TYPE_FDDI
;
1566 rc
= lcs_send_startlan(card
, LCS_INITIATOR_TCPIP
);
1574 lcs_startlan(struct lcs_card
*card
)
1578 LCS_DBF_TEXT(2, trace
, "startlan");
1580 if (card
->portno
!= LCS_INVALID_PORT_NO
) {
1581 if (card
->lan_type
== LCS_FRAME_TYPE_AUTO
)
1582 rc
= lcs_startlan_auto(card
);
1584 rc
= lcs_send_startlan(card
, LCS_INITIATOR_TCPIP
);
1586 for (i
= 0; i
<= 16; i
++) {
1588 if (card
->lan_type
!= LCS_FRAME_TYPE_AUTO
)
1589 rc
= lcs_send_startlan(card
,
1590 LCS_INITIATOR_TCPIP
);
1592 /* autodetecting lan type */
1593 rc
= lcs_startlan_auto(card
);
1599 return lcs_send_lanstat(card
);
1604 * LCS detect function
1605 * setup channels and make them I/O ready
1608 lcs_detect(struct lcs_card
*card
)
1612 LCS_DBF_TEXT(2, setup
, "lcsdetct");
1613 /* start/reset card */
1615 netif_stop_queue(card
->dev
);
1616 rc
= lcs_stop_channels(card
);
1618 rc
= lcs_start_channels(card
);
1620 rc
= lcs_send_startup(card
, LCS_INITIATOR_TCPIP
);
1622 rc
= lcs_startlan(card
);
1626 card
->state
= DEV_STATE_UP
;
1628 card
->state
= DEV_STATE_DOWN
;
1629 card
->write
.state
= CH_STATE_INIT
;
1630 card
->read
.state
= CH_STATE_INIT
;
1639 lcs_resetcard(struct lcs_card
*card
)
1643 LCS_DBF_TEXT(2, trace
, "rescard");
1644 for (retries
= 0; retries
< 10; retries
++) {
1645 if (lcs_detect(card
) == 0) {
1646 netif_wake_queue(card
->dev
);
1647 card
->state
= DEV_STATE_UP
;
1648 PRINT_INFO("LCS device %s successfully restarted!\n",
1654 PRINT_ERR("Error in Reseting LCS card!\n");
1663 lcs_stopcard(struct lcs_card
*card
)
1667 LCS_DBF_TEXT(3, setup
, "stopcard");
1669 if (card
->read
.state
!= CH_STATE_STOPPED
&&
1670 card
->write
.state
!= CH_STATE_STOPPED
&&
1671 card
->state
== DEV_STATE_UP
) {
1672 lcs_clear_multicast_list(card
);
1673 rc
= lcs_send_stoplan(card
,LCS_INITIATOR_TCPIP
);
1674 rc
= lcs_send_shutdown(card
);
1676 rc
= lcs_stop_channels(card
);
1677 card
->state
= DEV_STATE_DOWN
;
1683 * LGW initiated commands
1686 lcs_lgw_startlan_thread(void *data
)
1688 struct lcs_card
*card
;
1690 card
= (struct lcs_card
*) data
;
1691 daemonize("lgwstpln");
1693 if (!lcs_do_run_thread(card
, LCS_STARTLAN_THREAD
))
1695 LCS_DBF_TEXT(4, trace
, "lgwstpln");
1697 netif_stop_queue(card
->dev
);
1698 if (lcs_startlan(card
) == 0) {
1699 netif_wake_queue(card
->dev
);
1700 card
->state
= DEV_STATE_UP
;
1701 PRINT_INFO("LCS Startlan for device %s succeeded!\n",
1705 PRINT_ERR("LCS Startlan for device %s failed!\n",
1707 lcs_clear_thread_running_bit(card
, LCS_STARTLAN_THREAD
);
1712 * Send startup command initiated by Lan Gateway
1715 lcs_lgw_startup_thread(void *data
)
1719 struct lcs_card
*card
;
1721 card
= (struct lcs_card
*) data
;
1722 daemonize("lgwstaln");
1724 if (!lcs_do_run_thread(card
, LCS_STARTUP_THREAD
))
1726 LCS_DBF_TEXT(4, trace
, "lgwstaln");
1728 netif_stop_queue(card
->dev
);
1729 rc
= lcs_send_startup(card
, LCS_INITIATOR_LGW
);
1731 PRINT_ERR("Startup for LCS device %s initiated " \
1732 "by LGW failed!\nReseting card ...\n",
1734 /* do a card reset */
1735 rc
= lcs_resetcard(card
);
1739 rc
= lcs_startlan(card
);
1741 netif_wake_queue(card
->dev
);
1742 card
->state
= DEV_STATE_UP
;
1746 PRINT_INFO("LCS Startup for device %s succeeded!\n",
1749 PRINT_ERR("LCS Startup for device %s failed!\n",
1751 lcs_clear_thread_running_bit(card
, LCS_STARTUP_THREAD
);
1757 * send stoplan command initiated by Lan Gateway
1760 lcs_lgw_stoplan_thread(void *data
)
1762 struct lcs_card
*card
;
1765 card
= (struct lcs_card
*) data
;
1766 daemonize("lgwstop");
1768 if (!lcs_do_run_thread(card
, LCS_STOPLAN_THREAD
))
1770 LCS_DBF_TEXT(4, trace
, "lgwstop");
1772 netif_stop_queue(card
->dev
);
1773 if (lcs_send_stoplan(card
, LCS_INITIATOR_LGW
) == 0)
1774 PRINT_INFO("Stoplan for %s initiated by LGW succeeded!\n",
1777 PRINT_ERR("Stoplan %s initiated by LGW failed!\n",
1779 /*Try to reset the card, stop it on failure */
1780 rc
= lcs_resetcard(card
);
1782 rc
= lcs_stopcard(card
);
1783 lcs_clear_thread_running_bit(card
, LCS_STOPLAN_THREAD
);
1788 * Kernel Thread helper functions for LGW initiated commands
1791 lcs_start_kernel_thread(struct lcs_card
*card
)
1793 LCS_DBF_TEXT(5, trace
, "krnthrd");
1794 if (lcs_do_start_thread(card
, LCS_STARTUP_THREAD
))
1795 kernel_thread(lcs_lgw_startup_thread
, (void *) card
, SIGCHLD
);
1796 if (lcs_do_start_thread(card
, LCS_STARTLAN_THREAD
))
1797 kernel_thread(lcs_lgw_startlan_thread
, (void *) card
, SIGCHLD
);
1798 if (lcs_do_start_thread(card
, LCS_STOPLAN_THREAD
))
1799 kernel_thread(lcs_lgw_stoplan_thread
, (void *) card
, SIGCHLD
);
1800 #ifdef CONFIG_IP_MULTICAST
1801 if (lcs_do_start_thread(card
, LCS_SET_MC_THREAD
))
1802 kernel_thread(lcs_register_mc_addresses
, (void *) card
, SIGCHLD
);
1807 * Process control frames.
1810 lcs_get_control(struct lcs_card
*card
, struct lcs_cmd
*cmd
)
1812 LCS_DBF_TEXT(5, trace
, "getctrl");
1813 if (cmd
->initiator
== LCS_INITIATOR_LGW
) {
1814 switch(cmd
->cmd_code
) {
1815 case LCS_CMD_STARTUP
:
1816 if (!lcs_set_thread_start_bit(card
,
1817 LCS_STARTUP_THREAD
))
1818 schedule_work(&card
->kernel_thread_starter
);
1820 case LCS_CMD_STARTLAN
:
1821 if (!lcs_set_thread_start_bit(card
,
1822 LCS_STARTLAN_THREAD
))
1823 schedule_work(&card
->kernel_thread_starter
);
1825 case LCS_CMD_STOPLAN
:
1826 if (!lcs_set_thread_start_bit(card
,
1827 LCS_STOPLAN_THREAD
))
1828 schedule_work(&card
->kernel_thread_starter
);
1831 PRINT_INFO("UNRECOGNIZED LGW COMMAND\n");
1835 lcs_notify_lancmd_waiters(card
, cmd
);
1839 * Unpack network packet.
1842 lcs_get_skb(struct lcs_card
*card
, char *skb_data
, unsigned int skb_len
)
1844 struct sk_buff
*skb
;
1846 LCS_DBF_TEXT(5, trace
, "getskb");
1847 if (card
->dev
== NULL
||
1848 card
->state
!= DEV_STATE_UP
)
1849 /* The card isn't up. Ignore the packet. */
1852 skb
= dev_alloc_skb(skb_len
);
1854 PRINT_ERR("LCS: alloc_skb failed for device=%s\n",
1856 card
->stats
.rx_dropped
++;
1859 skb
->dev
= card
->dev
;
1860 memcpy(skb_put(skb
, skb_len
), skb_data
, skb_len
);
1861 skb
->protocol
= card
->lan_type_trans(skb
, card
->dev
);
1862 card
->stats
.rx_bytes
+= skb_len
;
1863 card
->stats
.rx_packets
++;
1864 *((__u32
*)skb
->cb
) = ++card
->pkt_seq
;
1869 * LCS main routine to get packets and lancmd replies from the buffers
1872 lcs_get_frames_cb(struct lcs_channel
*channel
, struct lcs_buffer
*buffer
)
1874 struct lcs_card
*card
;
1875 struct lcs_header
*lcs_hdr
;
1878 LCS_DBF_TEXT(5, trace
, "lcsgtpkt");
1879 lcs_hdr
= (struct lcs_header
*) buffer
->data
;
1880 if (lcs_hdr
->offset
== LCS_ILLEGAL_OFFSET
) {
1881 LCS_DBF_TEXT(4, trace
, "-eiogpkt");
1884 card
= (struct lcs_card
*)
1885 ((char *) channel
- offsetof(struct lcs_card
, read
));
1887 while (lcs_hdr
->offset
!= 0) {
1888 if (lcs_hdr
->offset
<= 0 ||
1889 lcs_hdr
->offset
> LCS_IOBUFFERSIZE
||
1890 lcs_hdr
->offset
< offset
) {
1891 /* Offset invalid. */
1892 card
->stats
.rx_length_errors
++;
1893 card
->stats
.rx_errors
++;
1896 /* What kind of frame is it? */
1897 if (lcs_hdr
->type
== LCS_FRAME_TYPE_CONTROL
)
1898 /* Control frame. */
1899 lcs_get_control(card
, (struct lcs_cmd
*) lcs_hdr
);
1900 else if (lcs_hdr
->type
== LCS_FRAME_TYPE_ENET
||
1901 lcs_hdr
->type
== LCS_FRAME_TYPE_TR
||
1902 lcs_hdr
->type
== LCS_FRAME_TYPE_FDDI
)
1903 /* Normal network packet. */
1904 lcs_get_skb(card
, (char *)(lcs_hdr
+ 1),
1905 lcs_hdr
->offset
- offset
-
1906 sizeof(struct lcs_header
));
1908 /* Unknown frame type. */
1909 ; // FIXME: error message ?
1910 /* Proceed to next frame. */
1911 offset
= lcs_hdr
->offset
;
1912 lcs_hdr
->offset
= LCS_ILLEGAL_OFFSET
;
1913 lcs_hdr
= (struct lcs_header
*) (buffer
->data
+ offset
);
1915 /* The buffer is now empty. Make it ready again. */
1916 lcs_ready_buffer(&card
->read
, buffer
);
1920 * get network statistics for ifconfig and other user programs
1922 static struct net_device_stats
*
1923 lcs_getstats(struct net_device
*dev
)
1925 struct lcs_card
*card
;
1927 LCS_DBF_TEXT(4, trace
, "netstats");
1928 card
= (struct lcs_card
*) dev
->priv
;
1929 return &card
->stats
;
1934 * This function will be called by user doing ifconfig xxx down
1937 lcs_stop_device(struct net_device
*dev
)
1939 struct lcs_card
*card
;
1942 LCS_DBF_TEXT(2, trace
, "stopdev");
1943 card
= (struct lcs_card
*) dev
->priv
;
1944 netif_stop_queue(dev
);
1945 dev
->flags
&= ~IFF_UP
;
1946 rc
= lcs_stopcard(card
);
1948 PRINT_ERR("Try it again!\n ");
1953 * start lcs device and make it runnable
1954 * This function will be called by user doing ifconfig xxx up
1957 lcs_open_device(struct net_device
*dev
)
1959 struct lcs_card
*card
;
1962 LCS_DBF_TEXT(2, trace
, "opendev");
1963 card
= (struct lcs_card
*) dev
->priv
;
1964 /* initialize statistics */
1965 rc
= lcs_detect(card
);
1967 PRINT_ERR("LCS:Error in opening device!\n");
1970 dev
->flags
|= IFF_UP
;
1971 netif_wake_queue(dev
);
1972 card
->state
= DEV_STATE_UP
;
1978 * show function for portno called by cat or similar things
1981 lcs_portno_show (struct device
*dev
, struct device_attribute
*attr
, char *buf
)
1983 struct lcs_card
*card
;
1985 card
= (struct lcs_card
*)dev
->driver_data
;
1990 return sprintf(buf
, "%d\n", card
->portno
);
1994 * store the value which is piped to file portno
1997 lcs_portno_store (struct device
*dev
, struct device_attribute
*attr
, const char *buf
, size_t count
)
1999 struct lcs_card
*card
;
2002 card
= (struct lcs_card
*)dev
->driver_data
;
2007 sscanf(buf
, "%u", &value
);
2008 /* TODO: sanity checks */
2009 card
->portno
= value
;
2015 static DEVICE_ATTR(portno
, 0644, lcs_portno_show
, lcs_portno_store
);
2018 lcs_type_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
2020 struct ccwgroup_device
*cgdev
;
2022 cgdev
= to_ccwgroupdev(dev
);
2026 return sprintf(buf
, "%s\n", cu3088_type
[cgdev
->cdev
[0]->id
.driver_info
]);
2029 static DEVICE_ATTR(type
, 0444, lcs_type_show
, NULL
);
2032 lcs_timeout_show(struct device
*dev
, struct device_attribute
*attr
, char *buf
)
2034 struct lcs_card
*card
;
2036 card
= (struct lcs_card
*)dev
->driver_data
;
2038 return card
? sprintf(buf
, "%u\n", card
->lancmd_timeout
) : 0;
2042 lcs_timeout_store (struct device
*dev
, struct device_attribute
*attr
, const char *buf
, size_t count
)
2044 struct lcs_card
*card
;
2047 card
= (struct lcs_card
*)dev
->driver_data
;
2052 sscanf(buf
, "%u", &value
);
2053 /* TODO: sanity checks */
2054 card
->lancmd_timeout
= value
;
2060 DEVICE_ATTR(lancmd_timeout
, 0644, lcs_timeout_show
, lcs_timeout_store
);
2062 static struct attribute
* lcs_attrs
[] = {
2063 &dev_attr_portno
.attr
,
2064 &dev_attr_type
.attr
,
2065 &dev_attr_lancmd_timeout
.attr
,
2069 static struct attribute_group lcs_attr_group
= {
2074 * lcs_probe_device is called on establishing a new ccwgroup_device.
2077 lcs_probe_device(struct ccwgroup_device
*ccwgdev
)
2079 struct lcs_card
*card
;
2082 if (!get_device(&ccwgdev
->dev
))
2085 LCS_DBF_TEXT(2, setup
, "add_dev");
2086 card
= lcs_alloc_card();
2088 PRINT_ERR("Allocation of lcs card failed\n");
2089 put_device(&ccwgdev
->dev
);
2092 ret
= sysfs_create_group(&ccwgdev
->dev
.kobj
, &lcs_attr_group
);
2094 PRINT_ERR("Creating attributes failed");
2095 lcs_free_card(card
);
2096 put_device(&ccwgdev
->dev
);
2099 ccwgdev
->dev
.driver_data
= card
;
2100 ccwgdev
->cdev
[0]->handler
= lcs_irq
;
2101 ccwgdev
->cdev
[1]->handler
= lcs_irq
;
2106 lcs_register_netdev(struct ccwgroup_device
*ccwgdev
)
2108 struct lcs_card
*card
;
2110 LCS_DBF_TEXT(2, setup
, "regnetdv");
2111 card
= (struct lcs_card
*)ccwgdev
->dev
.driver_data
;
2112 if (card
->dev
->reg_state
!= NETREG_UNINITIALIZED
)
2114 SET_NETDEV_DEV(card
->dev
, &ccwgdev
->dev
);
2115 return register_netdev(card
->dev
);
2119 * lcs_new_device will be called by setting the group device online.
2123 lcs_new_device(struct ccwgroup_device
*ccwgdev
)
2125 struct lcs_card
*card
;
2126 struct net_device
*dev
=NULL
;
2127 enum lcs_dev_states recover_state
;
2130 card
= (struct lcs_card
*)ccwgdev
->dev
.driver_data
;
2134 LCS_DBF_TEXT(2, setup
, "newdev");
2135 LCS_DBF_HEX(3, setup
, &card
, sizeof(void*));
2136 card
->read
.ccwdev
= ccwgdev
->cdev
[0];
2137 card
->write
.ccwdev
= ccwgdev
->cdev
[1];
2139 recover_state
= card
->state
;
2140 ccw_device_set_online(card
->read
.ccwdev
);
2141 ccw_device_set_online(card
->write
.ccwdev
);
2143 LCS_DBF_TEXT(3, setup
, "lcsnewdv");
2145 lcs_setup_card(card
);
2146 rc
= lcs_detect(card
);
2148 LCS_DBF_TEXT(2, setup
, "dtctfail");
2149 PRINT_WARN("Detection of LCS card failed with return code "
2150 "%d (0x%x)\n", rc
, rc
);
2155 LCS_DBF_TEXT(2, setup
, "samedev");
2156 LCS_DBF_HEX(3, setup
, &card
, sizeof(void*));
2159 switch (card
->lan_type
) {
2160 #ifdef CONFIG_NET_ETHERNET
2161 case LCS_FRAME_TYPE_ENET
:
2162 card
->lan_type_trans
= eth_type_trans
;
2163 dev
= alloc_etherdev(0);
2167 case LCS_FRAME_TYPE_TR
:
2168 card
->lan_type_trans
= tr_type_trans
;
2169 dev
= alloc_trdev(0);
2173 case LCS_FRAME_TYPE_FDDI
:
2174 card
->lan_type_trans
= fddi_type_trans
;
2175 dev
= alloc_fddidev(0);
2179 LCS_DBF_TEXT(3, setup
, "errinit");
2180 PRINT_ERR("LCS: Initialization failed\n");
2181 PRINT_ERR("LCS: No device found!\n");
2187 card
->dev
->priv
= card
;
2188 card
->dev
->open
= lcs_open_device
;
2189 card
->dev
->stop
= lcs_stop_device
;
2190 card
->dev
->hard_start_xmit
= lcs_start_xmit
;
2191 card
->dev
->get_stats
= lcs_getstats
;
2192 SET_MODULE_OWNER(dev
);
2193 memcpy(card
->dev
->dev_addr
, card
->mac
, LCS_MAC_LENGTH
);
2194 #ifdef CONFIG_IP_MULTICAST
2195 if (!lcs_check_multicast_support(card
))
2196 card
->dev
->set_multicast_list
= lcs_set_multicast_list
;
2199 lcs_set_allowed_threads(card
,0xffffffff);
2200 if (recover_state
== DEV_STATE_RECOVER
) {
2201 lcs_set_multicast_list(card
->dev
);
2202 card
->dev
->flags
|= IFF_UP
;
2203 netif_wake_queue(card
->dev
);
2204 card
->state
= DEV_STATE_UP
;
2209 if (lcs_register_netdev(ccwgdev
) != 0)
2212 /* Print out supported assists: IPv6 */
2213 PRINT_INFO("LCS device %s %s IPv6 support\n", card
->dev
->name
,
2214 (card
->ip_assists_supported
& LCS_IPASS_IPV6_SUPPORT
) ?
2215 "with" : "without");
2216 /* Print out supported assist: Multicast */
2217 PRINT_INFO("LCS device %s %s Multicast support\n", card
->dev
->name
,
2218 (card
->ip_assists_supported
& LCS_IPASS_MULTICAST_SUPPORT
) ?
2219 "with" : "without");
2223 ccw_device_set_offline(card
->read
.ccwdev
);
2224 ccw_device_set_offline(card
->write
.ccwdev
);
2229 * lcs_shutdown_device, called when setting the group device offline.
2232 lcs_shutdown_device(struct ccwgroup_device
*ccwgdev
)
2234 struct lcs_card
*card
;
2235 enum lcs_dev_states recover_state
;
2238 LCS_DBF_TEXT(3, setup
, "shtdndev");
2239 card
= (struct lcs_card
*)ccwgdev
->dev
.driver_data
;
2242 lcs_set_allowed_threads(card
, 0);
2243 if (lcs_wait_for_threads(card
, LCS_SET_MC_THREAD
))
2244 return -ERESTARTSYS
;
2245 LCS_DBF_HEX(3, setup
, &card
, sizeof(void*));
2246 recover_state
= card
->state
;
2248 ret
= lcs_stop_device(card
->dev
);
2249 ret
= ccw_device_set_offline(card
->read
.ccwdev
);
2250 ret
= ccw_device_set_offline(card
->write
.ccwdev
);
2251 if (recover_state
== DEV_STATE_UP
) {
2252 card
->state
= DEV_STATE_RECOVER
;
2260 * lcs_remove_device, free buffers and card
2263 lcs_remove_device(struct ccwgroup_device
*ccwgdev
)
2265 struct lcs_card
*card
;
2267 card
= (struct lcs_card
*)ccwgdev
->dev
.driver_data
;
2271 PRINT_INFO("Removing lcs group device ....\n");
2272 LCS_DBF_TEXT(3, setup
, "remdev");
2273 LCS_DBF_HEX(3, setup
, &card
, sizeof(void*));
2274 if (ccwgdev
->state
== CCWGROUP_ONLINE
) {
2275 lcs_shutdown_device(ccwgdev
);
2278 unregister_netdev(card
->dev
);
2279 sysfs_remove_group(&ccwgdev
->dev
.kobj
, &lcs_attr_group
);
2280 lcs_cleanup_card(card
);
2281 lcs_free_card(card
);
2282 put_device(&ccwgdev
->dev
);
2286 * LCS ccwgroup driver registration
2288 static struct ccwgroup_driver lcs_group_driver
= {
2289 .owner
= THIS_MODULE
,
2292 .driver_id
= 0xD3C3E2,
2293 .probe
= lcs_probe_device
,
2294 .remove
= lcs_remove_device
,
2295 .set_online
= lcs_new_device
,
2296 .set_offline
= lcs_shutdown_device
,
2300 * LCS Module/Kernel initialization function
2303 __init
lcs_init_module(void)
2307 PRINT_INFO("Loading %s\n",version
);
2308 rc
= lcs_register_debug_facility();
2309 LCS_DBF_TEXT(0, setup
, "lcsinit");
2311 PRINT_ERR("Initialization failed\n");
2315 rc
= register_cu3088_discipline(&lcs_group_driver
);
2317 PRINT_ERR("Initialization failed\n");
2325 * LCS module cleanup function
2328 __exit
lcs_cleanup_module(void)
2330 PRINT_INFO("Terminating lcs module.\n");
2331 LCS_DBF_TEXT(0, trace
, "cleanup");
2332 unregister_cu3088_discipline(&lcs_group_driver
);
2333 lcs_unregister_debug_facility();
2336 module_init(lcs_init_module
);
2337 module_exit(lcs_cleanup_module
);
2339 MODULE_AUTHOR("Frank Pavlic <fpavlic@de.ibm.com>");
2340 MODULE_LICENSE("GPL");