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4a71df50 FB |
1 | /* |
2 | * drivers/s390/net/qeth_core_main.c | |
3 | * | |
bbcfcdc8 | 4 | * Copyright IBM Corp. 2007, 2009 |
4a71df50 FB |
5 | * Author(s): Utz Bacher <utz.bacher@de.ibm.com>, |
6 | * Frank Pavlic <fpavlic@de.ibm.com>, | |
7 | * Thomas Spatzier <tspat@de.ibm.com>, | |
8 | * Frank Blaschka <frank.blaschka@de.ibm.com> | |
9 | */ | |
10 | ||
74eacdb9 FB |
11 | #define KMSG_COMPONENT "qeth" |
12 | #define pr_fmt(fmt) KMSG_COMPONENT ": " fmt | |
13 | ||
4a71df50 FB |
14 | #include <linux/module.h> |
15 | #include <linux/moduleparam.h> | |
16 | #include <linux/string.h> | |
17 | #include <linux/errno.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/ip.h> | |
4a71df50 FB |
20 | #include <linux/tcp.h> |
21 | #include <linux/mii.h> | |
22 | #include <linux/kthread.h> | |
23 | ||
ab4227cb MS |
24 | #include <asm/ebcdic.h> |
25 | #include <asm/io.h> | |
4a71df50 FB |
26 | |
27 | #include "qeth_core.h" | |
4a71df50 | 28 | |
d11ba0c4 PT |
29 | struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS] = { |
30 | /* define dbf - Name, Pages, Areas, Maxlen, Level, View, Handle */ | |
31 | /* N P A M L V H */ | |
32 | [QETH_DBF_SETUP] = {"qeth_setup", | |
33 | 8, 1, 8, 5, &debug_hex_ascii_view, NULL}, | |
34 | [QETH_DBF_QERR] = {"qeth_qerr", | |
35 | 2, 1, 8, 2, &debug_hex_ascii_view, NULL}, | |
36 | [QETH_DBF_TRACE] = {"qeth_trace", | |
37 | 4, 1, 8, 3, &debug_hex_ascii_view, NULL}, | |
38 | [QETH_DBF_MSG] = {"qeth_msg", | |
39 | 8, 1, 128, 3, &debug_sprintf_view, NULL}, | |
40 | [QETH_DBF_SENSE] = {"qeth_sense", | |
41 | 2, 1, 64, 2, &debug_hex_ascii_view, NULL}, | |
42 | [QETH_DBF_MISC] = {"qeth_misc", | |
43 | 2, 1, 256, 2, &debug_hex_ascii_view, NULL}, | |
44 | [QETH_DBF_CTRL] = {"qeth_control", | |
45 | 8, 1, QETH_DBF_CTRL_LEN, 5, &debug_hex_ascii_view, NULL}, | |
46 | }; | |
47 | EXPORT_SYMBOL_GPL(qeth_dbf); | |
4a71df50 FB |
48 | |
49 | struct qeth_card_list_struct qeth_core_card_list; | |
50 | EXPORT_SYMBOL_GPL(qeth_core_card_list); | |
683d718a FB |
51 | struct kmem_cache *qeth_core_header_cache; |
52 | EXPORT_SYMBOL_GPL(qeth_core_header_cache); | |
4a71df50 FB |
53 | |
54 | static struct device *qeth_core_root_dev; | |
55 | static unsigned int known_devices[][10] = QETH_MODELLIST_ARRAY; | |
56 | static struct lock_class_key qdio_out_skb_queue_key; | |
4a71df50 FB |
57 | |
58 | static void qeth_send_control_data_cb(struct qeth_channel *, | |
59 | struct qeth_cmd_buffer *); | |
60 | static int qeth_issue_next_read(struct qeth_card *); | |
61 | static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *); | |
62 | static void qeth_setup_ccw(struct qeth_channel *, unsigned char *, __u32); | |
63 | static void qeth_free_buffer_pool(struct qeth_card *); | |
64 | static int qeth_qdio_establish(struct qeth_card *); | |
65 | ||
66 | ||
67 | static inline void __qeth_fill_buffer_frag(struct sk_buff *skb, | |
68 | struct qdio_buffer *buffer, int is_tso, | |
69 | int *next_element_to_fill) | |
70 | { | |
71 | struct skb_frag_struct *frag; | |
72 | int fragno; | |
73 | unsigned long addr; | |
74 | int element, cnt, dlen; | |
75 | ||
76 | fragno = skb_shinfo(skb)->nr_frags; | |
77 | element = *next_element_to_fill; | |
78 | dlen = 0; | |
79 | ||
80 | if (is_tso) | |
81 | buffer->element[element].flags = | |
82 | SBAL_FLAGS_MIDDLE_FRAG; | |
83 | else | |
84 | buffer->element[element].flags = | |
85 | SBAL_FLAGS_FIRST_FRAG; | |
86 | dlen = skb->len - skb->data_len; | |
87 | if (dlen) { | |
88 | buffer->element[element].addr = skb->data; | |
89 | buffer->element[element].length = dlen; | |
90 | element++; | |
91 | } | |
92 | for (cnt = 0; cnt < fragno; cnt++) { | |
93 | frag = &skb_shinfo(skb)->frags[cnt]; | |
94 | addr = (page_to_pfn(frag->page) << PAGE_SHIFT) + | |
95 | frag->page_offset; | |
96 | buffer->element[element].addr = (char *)addr; | |
97 | buffer->element[element].length = frag->size; | |
98 | if (cnt < (fragno - 1)) | |
99 | buffer->element[element].flags = | |
100 | SBAL_FLAGS_MIDDLE_FRAG; | |
101 | else | |
102 | buffer->element[element].flags = | |
103 | SBAL_FLAGS_LAST_FRAG; | |
104 | element++; | |
105 | } | |
106 | *next_element_to_fill = element; | |
107 | } | |
108 | ||
109 | static inline const char *qeth_get_cardname(struct qeth_card *card) | |
110 | { | |
111 | if (card->info.guestlan) { | |
112 | switch (card->info.type) { | |
113 | case QETH_CARD_TYPE_OSAE: | |
114 | return " Guest LAN QDIO"; | |
115 | case QETH_CARD_TYPE_IQD: | |
116 | return " Guest LAN Hiper"; | |
117 | default: | |
118 | return " unknown"; | |
119 | } | |
120 | } else { | |
121 | switch (card->info.type) { | |
122 | case QETH_CARD_TYPE_OSAE: | |
123 | return " OSD Express"; | |
124 | case QETH_CARD_TYPE_IQD: | |
125 | return " HiperSockets"; | |
126 | case QETH_CARD_TYPE_OSN: | |
127 | return " OSN QDIO"; | |
128 | default: | |
129 | return " unknown"; | |
130 | } | |
131 | } | |
132 | return " n/a"; | |
133 | } | |
134 | ||
135 | /* max length to be returned: 14 */ | |
136 | const char *qeth_get_cardname_short(struct qeth_card *card) | |
137 | { | |
138 | if (card->info.guestlan) { | |
139 | switch (card->info.type) { | |
140 | case QETH_CARD_TYPE_OSAE: | |
141 | return "GuestLAN QDIO"; | |
142 | case QETH_CARD_TYPE_IQD: | |
143 | return "GuestLAN Hiper"; | |
144 | default: | |
145 | return "unknown"; | |
146 | } | |
147 | } else { | |
148 | switch (card->info.type) { | |
149 | case QETH_CARD_TYPE_OSAE: | |
150 | switch (card->info.link_type) { | |
151 | case QETH_LINK_TYPE_FAST_ETH: | |
152 | return "OSD_100"; | |
153 | case QETH_LINK_TYPE_HSTR: | |
154 | return "HSTR"; | |
155 | case QETH_LINK_TYPE_GBIT_ETH: | |
156 | return "OSD_1000"; | |
157 | case QETH_LINK_TYPE_10GBIT_ETH: | |
158 | return "OSD_10GIG"; | |
159 | case QETH_LINK_TYPE_LANE_ETH100: | |
160 | return "OSD_FE_LANE"; | |
161 | case QETH_LINK_TYPE_LANE_TR: | |
162 | return "OSD_TR_LANE"; | |
163 | case QETH_LINK_TYPE_LANE_ETH1000: | |
164 | return "OSD_GbE_LANE"; | |
165 | case QETH_LINK_TYPE_LANE: | |
166 | return "OSD_ATM_LANE"; | |
167 | default: | |
168 | return "OSD_Express"; | |
169 | } | |
170 | case QETH_CARD_TYPE_IQD: | |
171 | return "HiperSockets"; | |
172 | case QETH_CARD_TYPE_OSN: | |
173 | return "OSN"; | |
174 | default: | |
175 | return "unknown"; | |
176 | } | |
177 | } | |
178 | return "n/a"; | |
179 | } | |
180 | ||
181 | void qeth_set_allowed_threads(struct qeth_card *card, unsigned long threads, | |
182 | int clear_start_mask) | |
183 | { | |
184 | unsigned long flags; | |
185 | ||
186 | spin_lock_irqsave(&card->thread_mask_lock, flags); | |
187 | card->thread_allowed_mask = threads; | |
188 | if (clear_start_mask) | |
189 | card->thread_start_mask &= threads; | |
190 | spin_unlock_irqrestore(&card->thread_mask_lock, flags); | |
191 | wake_up(&card->wait_q); | |
192 | } | |
193 | EXPORT_SYMBOL_GPL(qeth_set_allowed_threads); | |
194 | ||
195 | int qeth_threads_running(struct qeth_card *card, unsigned long threads) | |
196 | { | |
197 | unsigned long flags; | |
198 | int rc = 0; | |
199 | ||
200 | spin_lock_irqsave(&card->thread_mask_lock, flags); | |
201 | rc = (card->thread_running_mask & threads); | |
202 | spin_unlock_irqrestore(&card->thread_mask_lock, flags); | |
203 | return rc; | |
204 | } | |
205 | EXPORT_SYMBOL_GPL(qeth_threads_running); | |
206 | ||
207 | int qeth_wait_for_threads(struct qeth_card *card, unsigned long threads) | |
208 | { | |
209 | return wait_event_interruptible(card->wait_q, | |
210 | qeth_threads_running(card, threads) == 0); | |
211 | } | |
212 | EXPORT_SYMBOL_GPL(qeth_wait_for_threads); | |
213 | ||
214 | void qeth_clear_working_pool_list(struct qeth_card *card) | |
215 | { | |
216 | struct qeth_buffer_pool_entry *pool_entry, *tmp; | |
217 | ||
d11ba0c4 | 218 | QETH_DBF_TEXT(TRACE, 5, "clwrklst"); |
4a71df50 FB |
219 | list_for_each_entry_safe(pool_entry, tmp, |
220 | &card->qdio.in_buf_pool.entry_list, list){ | |
221 | list_del(&pool_entry->list); | |
222 | } | |
223 | } | |
224 | EXPORT_SYMBOL_GPL(qeth_clear_working_pool_list); | |
225 | ||
226 | static int qeth_alloc_buffer_pool(struct qeth_card *card) | |
227 | { | |
228 | struct qeth_buffer_pool_entry *pool_entry; | |
229 | void *ptr; | |
230 | int i, j; | |
231 | ||
d11ba0c4 | 232 | QETH_DBF_TEXT(TRACE, 5, "alocpool"); |
4a71df50 FB |
233 | for (i = 0; i < card->qdio.init_pool.buf_count; ++i) { |
234 | pool_entry = kmalloc(sizeof(*pool_entry), GFP_KERNEL); | |
235 | if (!pool_entry) { | |
236 | qeth_free_buffer_pool(card); | |
237 | return -ENOMEM; | |
238 | } | |
239 | for (j = 0; j < QETH_MAX_BUFFER_ELEMENTS(card); ++j) { | |
508b3c4f | 240 | ptr = (void *) __get_free_page(GFP_KERNEL); |
4a71df50 FB |
241 | if (!ptr) { |
242 | while (j > 0) | |
243 | free_page((unsigned long) | |
244 | pool_entry->elements[--j]); | |
245 | kfree(pool_entry); | |
246 | qeth_free_buffer_pool(card); | |
247 | return -ENOMEM; | |
248 | } | |
249 | pool_entry->elements[j] = ptr; | |
250 | } | |
251 | list_add(&pool_entry->init_list, | |
252 | &card->qdio.init_pool.entry_list); | |
253 | } | |
254 | return 0; | |
255 | } | |
256 | ||
257 | int qeth_realloc_buffer_pool(struct qeth_card *card, int bufcnt) | |
258 | { | |
d11ba0c4 | 259 | QETH_DBF_TEXT(TRACE, 2, "realcbp"); |
4a71df50 FB |
260 | |
261 | if ((card->state != CARD_STATE_DOWN) && | |
262 | (card->state != CARD_STATE_RECOVER)) | |
263 | return -EPERM; | |
264 | ||
265 | /* TODO: steel/add buffers from/to a running card's buffer pool (?) */ | |
266 | qeth_clear_working_pool_list(card); | |
267 | qeth_free_buffer_pool(card); | |
268 | card->qdio.in_buf_pool.buf_count = bufcnt; | |
269 | card->qdio.init_pool.buf_count = bufcnt; | |
270 | return qeth_alloc_buffer_pool(card); | |
271 | } | |
272 | ||
273 | int qeth_set_large_send(struct qeth_card *card, | |
274 | enum qeth_large_send_types type) | |
275 | { | |
276 | int rc = 0; | |
277 | ||
278 | if (card->dev == NULL) { | |
279 | card->options.large_send = type; | |
280 | return 0; | |
281 | } | |
282 | if (card->state == CARD_STATE_UP) | |
283 | netif_tx_disable(card->dev); | |
284 | card->options.large_send = type; | |
285 | switch (card->options.large_send) { | |
4a71df50 FB |
286 | case QETH_LARGE_SEND_TSO: |
287 | if (qeth_is_supported(card, IPA_OUTBOUND_TSO)) { | |
288 | card->dev->features |= NETIF_F_TSO | NETIF_F_SG | | |
289 | NETIF_F_HW_CSUM; | |
290 | } else { | |
4a71df50 FB |
291 | card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | |
292 | NETIF_F_HW_CSUM); | |
293 | card->options.large_send = QETH_LARGE_SEND_NO; | |
294 | rc = -EOPNOTSUPP; | |
295 | } | |
296 | break; | |
297 | default: /* includes QETH_LARGE_SEND_NO */ | |
298 | card->dev->features &= ~(NETIF_F_TSO | NETIF_F_SG | | |
299 | NETIF_F_HW_CSUM); | |
300 | break; | |
301 | } | |
302 | if (card->state == CARD_STATE_UP) | |
303 | netif_wake_queue(card->dev); | |
304 | return rc; | |
305 | } | |
306 | EXPORT_SYMBOL_GPL(qeth_set_large_send); | |
307 | ||
308 | static int qeth_issue_next_read(struct qeth_card *card) | |
309 | { | |
310 | int rc; | |
311 | struct qeth_cmd_buffer *iob; | |
312 | ||
d11ba0c4 | 313 | QETH_DBF_TEXT(TRACE, 5, "issnxrd"); |
4a71df50 FB |
314 | if (card->read.state != CH_STATE_UP) |
315 | return -EIO; | |
316 | iob = qeth_get_buffer(&card->read); | |
317 | if (!iob) { | |
74eacdb9 FB |
318 | dev_warn(&card->gdev->dev, "The qeth device driver " |
319 | "failed to recover an error on the device\n"); | |
320 | QETH_DBF_MESSAGE(2, "%s issue_next_read failed: no iob " | |
321 | "available\n", dev_name(&card->gdev->dev)); | |
4a71df50 FB |
322 | return -ENOMEM; |
323 | } | |
324 | qeth_setup_ccw(&card->read, iob->data, QETH_BUFSIZE); | |
d11ba0c4 | 325 | QETH_DBF_TEXT(TRACE, 6, "noirqpnd"); |
4a71df50 FB |
326 | rc = ccw_device_start(card->read.ccwdev, &card->read.ccw, |
327 | (addr_t) iob, 0, 0); | |
328 | if (rc) { | |
74eacdb9 FB |
329 | QETH_DBF_MESSAGE(2, "%s error in starting next read ccw! " |
330 | "rc=%i\n", dev_name(&card->gdev->dev), rc); | |
4a71df50 FB |
331 | atomic_set(&card->read.irq_pending, 0); |
332 | qeth_schedule_recovery(card); | |
333 | wake_up(&card->wait_q); | |
334 | } | |
335 | return rc; | |
336 | } | |
337 | ||
338 | static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card) | |
339 | { | |
340 | struct qeth_reply *reply; | |
341 | ||
342 | reply = kzalloc(sizeof(struct qeth_reply), GFP_ATOMIC); | |
343 | if (reply) { | |
344 | atomic_set(&reply->refcnt, 1); | |
345 | atomic_set(&reply->received, 0); | |
346 | reply->card = card; | |
347 | }; | |
348 | return reply; | |
349 | } | |
350 | ||
351 | static void qeth_get_reply(struct qeth_reply *reply) | |
352 | { | |
353 | WARN_ON(atomic_read(&reply->refcnt) <= 0); | |
354 | atomic_inc(&reply->refcnt); | |
355 | } | |
356 | ||
357 | static void qeth_put_reply(struct qeth_reply *reply) | |
358 | { | |
359 | WARN_ON(atomic_read(&reply->refcnt) <= 0); | |
360 | if (atomic_dec_and_test(&reply->refcnt)) | |
361 | kfree(reply); | |
362 | } | |
363 | ||
d11ba0c4 | 364 | static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc, |
4a71df50 FB |
365 | struct qeth_card *card) |
366 | { | |
4a71df50 | 367 | char *ipa_name; |
d11ba0c4 | 368 | int com = cmd->hdr.command; |
4a71df50 | 369 | ipa_name = qeth_get_ipa_cmd_name(com); |
d11ba0c4 PT |
370 | if (rc) |
371 | QETH_DBF_MESSAGE(2, "IPA: %s(x%X) for %s returned x%X \"%s\"\n", | |
372 | ipa_name, com, QETH_CARD_IFNAME(card), | |
373 | rc, qeth_get_ipa_msg(rc)); | |
374 | else | |
375 | QETH_DBF_MESSAGE(5, "IPA: %s(x%X) for %s succeeded\n", | |
376 | ipa_name, com, QETH_CARD_IFNAME(card)); | |
4a71df50 FB |
377 | } |
378 | ||
379 | static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card, | |
380 | struct qeth_cmd_buffer *iob) | |
381 | { | |
382 | struct qeth_ipa_cmd *cmd = NULL; | |
383 | ||
d11ba0c4 | 384 | QETH_DBF_TEXT(TRACE, 5, "chkipad"); |
4a71df50 FB |
385 | if (IS_IPA(iob->data)) { |
386 | cmd = (struct qeth_ipa_cmd *) PDU_ENCAPSULATION(iob->data); | |
387 | if (IS_IPA_REPLY(cmd)) { | |
d11ba0c4 PT |
388 | if (cmd->hdr.command < IPA_CMD_SETCCID || |
389 | cmd->hdr.command > IPA_CMD_MODCCID) | |
390 | qeth_issue_ipa_msg(cmd, | |
391 | cmd->hdr.return_code, card); | |
4a71df50 FB |
392 | return cmd; |
393 | } else { | |
394 | switch (cmd->hdr.command) { | |
395 | case IPA_CMD_STOPLAN: | |
74eacdb9 FB |
396 | dev_warn(&card->gdev->dev, |
397 | "The link for interface %s on CHPID" | |
398 | " 0x%X failed\n", | |
4a71df50 FB |
399 | QETH_CARD_IFNAME(card), |
400 | card->info.chpid); | |
401 | card->lan_online = 0; | |
402 | if (card->dev && netif_carrier_ok(card->dev)) | |
403 | netif_carrier_off(card->dev); | |
404 | return NULL; | |
405 | case IPA_CMD_STARTLAN: | |
74eacdb9 FB |
406 | dev_info(&card->gdev->dev, |
407 | "The link for %s on CHPID 0x%X has" | |
408 | " been restored\n", | |
4a71df50 FB |
409 | QETH_CARD_IFNAME(card), |
410 | card->info.chpid); | |
411 | netif_carrier_on(card->dev); | |
922dc062 | 412 | card->lan_online = 1; |
4a71df50 FB |
413 | qeth_schedule_recovery(card); |
414 | return NULL; | |
415 | case IPA_CMD_MODCCID: | |
416 | return cmd; | |
417 | case IPA_CMD_REGISTER_LOCAL_ADDR: | |
d11ba0c4 | 418 | QETH_DBF_TEXT(TRACE, 3, "irla"); |
4a71df50 FB |
419 | break; |
420 | case IPA_CMD_UNREGISTER_LOCAL_ADDR: | |
d11ba0c4 | 421 | QETH_DBF_TEXT(TRACE, 3, "urla"); |
4a71df50 FB |
422 | break; |
423 | default: | |
c4cef07c | 424 | QETH_DBF_MESSAGE(2, "Received data is IPA " |
4a71df50 FB |
425 | "but not a reply!\n"); |
426 | break; | |
427 | } | |
428 | } | |
429 | } | |
430 | return cmd; | |
431 | } | |
432 | ||
433 | void qeth_clear_ipacmd_list(struct qeth_card *card) | |
434 | { | |
435 | struct qeth_reply *reply, *r; | |
436 | unsigned long flags; | |
437 | ||
d11ba0c4 | 438 | QETH_DBF_TEXT(TRACE, 4, "clipalst"); |
4a71df50 FB |
439 | |
440 | spin_lock_irqsave(&card->lock, flags); | |
441 | list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { | |
442 | qeth_get_reply(reply); | |
443 | reply->rc = -EIO; | |
444 | atomic_inc(&reply->received); | |
445 | list_del_init(&reply->list); | |
446 | wake_up(&reply->wait_q); | |
447 | qeth_put_reply(reply); | |
448 | } | |
449 | spin_unlock_irqrestore(&card->lock, flags); | |
450 | } | |
451 | EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list); | |
452 | ||
453 | static int qeth_check_idx_response(unsigned char *buffer) | |
454 | { | |
455 | if (!buffer) | |
456 | return 0; | |
457 | ||
d11ba0c4 | 458 | QETH_DBF_HEX(CTRL, 2, buffer, QETH_DBF_CTRL_LEN); |
4a71df50 | 459 | if ((buffer[2] & 0xc0) == 0xc0) { |
74eacdb9 | 460 | QETH_DBF_MESSAGE(2, "received an IDX TERMINATE " |
4a71df50 FB |
461 | "with cause code 0x%02x%s\n", |
462 | buffer[4], | |
463 | ((buffer[4] == 0x22) ? | |
464 | " -- try another portname" : "")); | |
d11ba0c4 PT |
465 | QETH_DBF_TEXT(TRACE, 2, "ckidxres"); |
466 | QETH_DBF_TEXT(TRACE, 2, " idxterm"); | |
467 | QETH_DBF_TEXT_(TRACE, 2, " rc%d", -EIO); | |
4a71df50 FB |
468 | return -EIO; |
469 | } | |
470 | return 0; | |
471 | } | |
472 | ||
473 | static void qeth_setup_ccw(struct qeth_channel *channel, unsigned char *iob, | |
474 | __u32 len) | |
475 | { | |
476 | struct qeth_card *card; | |
477 | ||
d11ba0c4 | 478 | QETH_DBF_TEXT(TRACE, 4, "setupccw"); |
4a71df50 FB |
479 | card = CARD_FROM_CDEV(channel->ccwdev); |
480 | if (channel == &card->read) | |
481 | memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); | |
482 | else | |
483 | memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); | |
484 | channel->ccw.count = len; | |
485 | channel->ccw.cda = (__u32) __pa(iob); | |
486 | } | |
487 | ||
488 | static struct qeth_cmd_buffer *__qeth_get_buffer(struct qeth_channel *channel) | |
489 | { | |
490 | __u8 index; | |
491 | ||
d11ba0c4 | 492 | QETH_DBF_TEXT(TRACE, 6, "getbuff"); |
4a71df50 FB |
493 | index = channel->io_buf_no; |
494 | do { | |
495 | if (channel->iob[index].state == BUF_STATE_FREE) { | |
496 | channel->iob[index].state = BUF_STATE_LOCKED; | |
497 | channel->io_buf_no = (channel->io_buf_no + 1) % | |
498 | QETH_CMD_BUFFER_NO; | |
499 | memset(channel->iob[index].data, 0, QETH_BUFSIZE); | |
500 | return channel->iob + index; | |
501 | } | |
502 | index = (index + 1) % QETH_CMD_BUFFER_NO; | |
503 | } while (index != channel->io_buf_no); | |
504 | ||
505 | return NULL; | |
506 | } | |
507 | ||
508 | void qeth_release_buffer(struct qeth_channel *channel, | |
509 | struct qeth_cmd_buffer *iob) | |
510 | { | |
511 | unsigned long flags; | |
512 | ||
d11ba0c4 | 513 | QETH_DBF_TEXT(TRACE, 6, "relbuff"); |
4a71df50 FB |
514 | spin_lock_irqsave(&channel->iob_lock, flags); |
515 | memset(iob->data, 0, QETH_BUFSIZE); | |
516 | iob->state = BUF_STATE_FREE; | |
517 | iob->callback = qeth_send_control_data_cb; | |
518 | iob->rc = 0; | |
519 | spin_unlock_irqrestore(&channel->iob_lock, flags); | |
520 | } | |
521 | EXPORT_SYMBOL_GPL(qeth_release_buffer); | |
522 | ||
523 | static struct qeth_cmd_buffer *qeth_get_buffer(struct qeth_channel *channel) | |
524 | { | |
525 | struct qeth_cmd_buffer *buffer = NULL; | |
526 | unsigned long flags; | |
527 | ||
528 | spin_lock_irqsave(&channel->iob_lock, flags); | |
529 | buffer = __qeth_get_buffer(channel); | |
530 | spin_unlock_irqrestore(&channel->iob_lock, flags); | |
531 | return buffer; | |
532 | } | |
533 | ||
534 | struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *channel) | |
535 | { | |
536 | struct qeth_cmd_buffer *buffer; | |
537 | wait_event(channel->wait_q, | |
538 | ((buffer = qeth_get_buffer(channel)) != NULL)); | |
539 | return buffer; | |
540 | } | |
541 | EXPORT_SYMBOL_GPL(qeth_wait_for_buffer); | |
542 | ||
543 | void qeth_clear_cmd_buffers(struct qeth_channel *channel) | |
544 | { | |
545 | int cnt; | |
546 | ||
547 | for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) | |
548 | qeth_release_buffer(channel, &channel->iob[cnt]); | |
549 | channel->buf_no = 0; | |
550 | channel->io_buf_no = 0; | |
551 | } | |
552 | EXPORT_SYMBOL_GPL(qeth_clear_cmd_buffers); | |
553 | ||
554 | static void qeth_send_control_data_cb(struct qeth_channel *channel, | |
555 | struct qeth_cmd_buffer *iob) | |
556 | { | |
557 | struct qeth_card *card; | |
558 | struct qeth_reply *reply, *r; | |
559 | struct qeth_ipa_cmd *cmd; | |
560 | unsigned long flags; | |
561 | int keep_reply; | |
562 | ||
d11ba0c4 | 563 | QETH_DBF_TEXT(TRACE, 4, "sndctlcb"); |
4a71df50 FB |
564 | |
565 | card = CARD_FROM_CDEV(channel->ccwdev); | |
566 | if (qeth_check_idx_response(iob->data)) { | |
567 | qeth_clear_ipacmd_list(card); | |
fc9c2460 UB |
568 | if (((iob->data[2] & 0xc0) == 0xc0) && iob->data[4] == 0xf6) |
569 | dev_err(&card->gdev->dev, | |
570 | "The qeth device is not configured " | |
571 | "for the OSI layer required by z/VM\n"); | |
4a71df50 FB |
572 | qeth_schedule_recovery(card); |
573 | goto out; | |
574 | } | |
575 | ||
576 | cmd = qeth_check_ipa_data(card, iob); | |
577 | if ((cmd == NULL) && (card->state != CARD_STATE_DOWN)) | |
578 | goto out; | |
579 | /*in case of OSN : check if cmd is set */ | |
580 | if (card->info.type == QETH_CARD_TYPE_OSN && | |
581 | cmd && | |
582 | cmd->hdr.command != IPA_CMD_STARTLAN && | |
583 | card->osn_info.assist_cb != NULL) { | |
584 | card->osn_info.assist_cb(card->dev, cmd); | |
585 | goto out; | |
586 | } | |
587 | ||
588 | spin_lock_irqsave(&card->lock, flags); | |
589 | list_for_each_entry_safe(reply, r, &card->cmd_waiter_list, list) { | |
590 | if ((reply->seqno == QETH_IDX_COMMAND_SEQNO) || | |
591 | ((cmd) && (reply->seqno == cmd->hdr.seqno))) { | |
592 | qeth_get_reply(reply); | |
593 | list_del_init(&reply->list); | |
594 | spin_unlock_irqrestore(&card->lock, flags); | |
595 | keep_reply = 0; | |
596 | if (reply->callback != NULL) { | |
597 | if (cmd) { | |
598 | reply->offset = (__u16)((char *)cmd - | |
599 | (char *)iob->data); | |
600 | keep_reply = reply->callback(card, | |
601 | reply, | |
602 | (unsigned long)cmd); | |
603 | } else | |
604 | keep_reply = reply->callback(card, | |
605 | reply, | |
606 | (unsigned long)iob); | |
607 | } | |
608 | if (cmd) | |
609 | reply->rc = (u16) cmd->hdr.return_code; | |
610 | else if (iob->rc) | |
611 | reply->rc = iob->rc; | |
612 | if (keep_reply) { | |
613 | spin_lock_irqsave(&card->lock, flags); | |
614 | list_add_tail(&reply->list, | |
615 | &card->cmd_waiter_list); | |
616 | spin_unlock_irqrestore(&card->lock, flags); | |
617 | } else { | |
618 | atomic_inc(&reply->received); | |
619 | wake_up(&reply->wait_q); | |
620 | } | |
621 | qeth_put_reply(reply); | |
622 | goto out; | |
623 | } | |
624 | } | |
625 | spin_unlock_irqrestore(&card->lock, flags); | |
626 | out: | |
627 | memcpy(&card->seqno.pdu_hdr_ack, | |
628 | QETH_PDU_HEADER_SEQ_NO(iob->data), | |
629 | QETH_SEQ_NO_LENGTH); | |
630 | qeth_release_buffer(channel, iob); | |
631 | } | |
632 | ||
633 | static int qeth_setup_channel(struct qeth_channel *channel) | |
634 | { | |
635 | int cnt; | |
636 | ||
d11ba0c4 | 637 | QETH_DBF_TEXT(SETUP, 2, "setupch"); |
4a71df50 FB |
638 | for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) { |
639 | channel->iob[cnt].data = (char *) | |
640 | kmalloc(QETH_BUFSIZE, GFP_DMA|GFP_KERNEL); | |
641 | if (channel->iob[cnt].data == NULL) | |
642 | break; | |
643 | channel->iob[cnt].state = BUF_STATE_FREE; | |
644 | channel->iob[cnt].channel = channel; | |
645 | channel->iob[cnt].callback = qeth_send_control_data_cb; | |
646 | channel->iob[cnt].rc = 0; | |
647 | } | |
648 | if (cnt < QETH_CMD_BUFFER_NO) { | |
649 | while (cnt-- > 0) | |
650 | kfree(channel->iob[cnt].data); | |
651 | return -ENOMEM; | |
652 | } | |
653 | channel->buf_no = 0; | |
654 | channel->io_buf_no = 0; | |
655 | atomic_set(&channel->irq_pending, 0); | |
656 | spin_lock_init(&channel->iob_lock); | |
657 | ||
658 | init_waitqueue_head(&channel->wait_q); | |
659 | return 0; | |
660 | } | |
661 | ||
662 | static int qeth_set_thread_start_bit(struct qeth_card *card, | |
663 | unsigned long thread) | |
664 | { | |
665 | unsigned long flags; | |
666 | ||
667 | spin_lock_irqsave(&card->thread_mask_lock, flags); | |
668 | if (!(card->thread_allowed_mask & thread) || | |
669 | (card->thread_start_mask & thread)) { | |
670 | spin_unlock_irqrestore(&card->thread_mask_lock, flags); | |
671 | return -EPERM; | |
672 | } | |
673 | card->thread_start_mask |= thread; | |
674 | spin_unlock_irqrestore(&card->thread_mask_lock, flags); | |
675 | return 0; | |
676 | } | |
677 | ||
678 | void qeth_clear_thread_start_bit(struct qeth_card *card, unsigned long thread) | |
679 | { | |
680 | unsigned long flags; | |
681 | ||
682 | spin_lock_irqsave(&card->thread_mask_lock, flags); | |
683 | card->thread_start_mask &= ~thread; | |
684 | spin_unlock_irqrestore(&card->thread_mask_lock, flags); | |
685 | wake_up(&card->wait_q); | |
686 | } | |
687 | EXPORT_SYMBOL_GPL(qeth_clear_thread_start_bit); | |
688 | ||
689 | void qeth_clear_thread_running_bit(struct qeth_card *card, unsigned long thread) | |
690 | { | |
691 | unsigned long flags; | |
692 | ||
693 | spin_lock_irqsave(&card->thread_mask_lock, flags); | |
694 | card->thread_running_mask &= ~thread; | |
695 | spin_unlock_irqrestore(&card->thread_mask_lock, flags); | |
696 | wake_up(&card->wait_q); | |
697 | } | |
698 | EXPORT_SYMBOL_GPL(qeth_clear_thread_running_bit); | |
699 | ||
700 | static int __qeth_do_run_thread(struct qeth_card *card, unsigned long thread) | |
701 | { | |
702 | unsigned long flags; | |
703 | int rc = 0; | |
704 | ||
705 | spin_lock_irqsave(&card->thread_mask_lock, flags); | |
706 | if (card->thread_start_mask & thread) { | |
707 | if ((card->thread_allowed_mask & thread) && | |
708 | !(card->thread_running_mask & thread)) { | |
709 | rc = 1; | |
710 | card->thread_start_mask &= ~thread; | |
711 | card->thread_running_mask |= thread; | |
712 | } else | |
713 | rc = -EPERM; | |
714 | } | |
715 | spin_unlock_irqrestore(&card->thread_mask_lock, flags); | |
716 | return rc; | |
717 | } | |
718 | ||
719 | int qeth_do_run_thread(struct qeth_card *card, unsigned long thread) | |
720 | { | |
721 | int rc = 0; | |
722 | ||
723 | wait_event(card->wait_q, | |
724 | (rc = __qeth_do_run_thread(card, thread)) >= 0); | |
725 | return rc; | |
726 | } | |
727 | EXPORT_SYMBOL_GPL(qeth_do_run_thread); | |
728 | ||
729 | void qeth_schedule_recovery(struct qeth_card *card) | |
730 | { | |
d11ba0c4 | 731 | QETH_DBF_TEXT(TRACE, 2, "startrec"); |
4a71df50 FB |
732 | if (qeth_set_thread_start_bit(card, QETH_RECOVER_THREAD) == 0) |
733 | schedule_work(&card->kernel_thread_starter); | |
734 | } | |
735 | EXPORT_SYMBOL_GPL(qeth_schedule_recovery); | |
736 | ||
737 | static int qeth_get_problem(struct ccw_device *cdev, struct irb *irb) | |
738 | { | |
739 | int dstat, cstat; | |
740 | char *sense; | |
741 | ||
742 | sense = (char *) irb->ecw; | |
23d805b6 PO |
743 | cstat = irb->scsw.cmd.cstat; |
744 | dstat = irb->scsw.cmd.dstat; | |
4a71df50 FB |
745 | |
746 | if (cstat & (SCHN_STAT_CHN_CTRL_CHK | SCHN_STAT_INTF_CTRL_CHK | | |
747 | SCHN_STAT_CHN_DATA_CHK | SCHN_STAT_CHAIN_CHECK | | |
748 | SCHN_STAT_PROT_CHECK | SCHN_STAT_PROG_CHECK)) { | |
d11ba0c4 | 749 | QETH_DBF_TEXT(TRACE, 2, "CGENCHK"); |
74eacdb9 FB |
750 | dev_warn(&cdev->dev, "The qeth device driver " |
751 | "failed to recover an error on the device\n"); | |
752 | QETH_DBF_MESSAGE(2, "%s check on device dstat=x%x, cstat=x%x ", | |
753 | dev_name(&cdev->dev), dstat, cstat); | |
4a71df50 FB |
754 | print_hex_dump(KERN_WARNING, "qeth: irb ", DUMP_PREFIX_OFFSET, |
755 | 16, 1, irb, 64, 1); | |
756 | return 1; | |
757 | } | |
758 | ||
759 | if (dstat & DEV_STAT_UNIT_CHECK) { | |
760 | if (sense[SENSE_RESETTING_EVENT_BYTE] & | |
761 | SENSE_RESETTING_EVENT_FLAG) { | |
d11ba0c4 | 762 | QETH_DBF_TEXT(TRACE, 2, "REVIND"); |
4a71df50 FB |
763 | return 1; |
764 | } | |
765 | if (sense[SENSE_COMMAND_REJECT_BYTE] & | |
766 | SENSE_COMMAND_REJECT_FLAG) { | |
d11ba0c4 | 767 | QETH_DBF_TEXT(TRACE, 2, "CMDREJi"); |
28a7e4c9 | 768 | return 1; |
4a71df50 FB |
769 | } |
770 | if ((sense[2] == 0xaf) && (sense[3] == 0xfe)) { | |
d11ba0c4 | 771 | QETH_DBF_TEXT(TRACE, 2, "AFFE"); |
4a71df50 FB |
772 | return 1; |
773 | } | |
774 | if ((!sense[0]) && (!sense[1]) && (!sense[2]) && (!sense[3])) { | |
d11ba0c4 | 775 | QETH_DBF_TEXT(TRACE, 2, "ZEROSEN"); |
4a71df50 FB |
776 | return 0; |
777 | } | |
d11ba0c4 | 778 | QETH_DBF_TEXT(TRACE, 2, "DGENCHK"); |
4a71df50 FB |
779 | return 1; |
780 | } | |
781 | return 0; | |
782 | } | |
783 | ||
784 | static long __qeth_check_irb_error(struct ccw_device *cdev, | |
785 | unsigned long intparm, struct irb *irb) | |
786 | { | |
787 | if (!IS_ERR(irb)) | |
788 | return 0; | |
789 | ||
790 | switch (PTR_ERR(irb)) { | |
791 | case -EIO: | |
74eacdb9 FB |
792 | QETH_DBF_MESSAGE(2, "%s i/o-error on device\n", |
793 | dev_name(&cdev->dev)); | |
d11ba0c4 PT |
794 | QETH_DBF_TEXT(TRACE, 2, "ckirberr"); |
795 | QETH_DBF_TEXT_(TRACE, 2, " rc%d", -EIO); | |
4a71df50 FB |
796 | break; |
797 | case -ETIMEDOUT: | |
74eacdb9 FB |
798 | dev_warn(&cdev->dev, "A hardware operation timed out" |
799 | " on the device\n"); | |
d11ba0c4 PT |
800 | QETH_DBF_TEXT(TRACE, 2, "ckirberr"); |
801 | QETH_DBF_TEXT_(TRACE, 2, " rc%d", -ETIMEDOUT); | |
4a71df50 FB |
802 | if (intparm == QETH_RCD_PARM) { |
803 | struct qeth_card *card = CARD_FROM_CDEV(cdev); | |
804 | ||
805 | if (card && (card->data.ccwdev == cdev)) { | |
806 | card->data.state = CH_STATE_DOWN; | |
807 | wake_up(&card->wait_q); | |
808 | } | |
809 | } | |
810 | break; | |
811 | default: | |
74eacdb9 FB |
812 | QETH_DBF_MESSAGE(2, "%s unknown error %ld on device\n", |
813 | dev_name(&cdev->dev), PTR_ERR(irb)); | |
d11ba0c4 PT |
814 | QETH_DBF_TEXT(TRACE, 2, "ckirberr"); |
815 | QETH_DBF_TEXT(TRACE, 2, " rc???"); | |
4a71df50 FB |
816 | } |
817 | return PTR_ERR(irb); | |
818 | } | |
819 | ||
820 | static void qeth_irq(struct ccw_device *cdev, unsigned long intparm, | |
821 | struct irb *irb) | |
822 | { | |
823 | int rc; | |
824 | int cstat, dstat; | |
825 | struct qeth_cmd_buffer *buffer; | |
826 | struct qeth_channel *channel; | |
827 | struct qeth_card *card; | |
828 | struct qeth_cmd_buffer *iob; | |
829 | __u8 index; | |
830 | ||
d11ba0c4 | 831 | QETH_DBF_TEXT(TRACE, 5, "irq"); |
4a71df50 FB |
832 | |
833 | if (__qeth_check_irb_error(cdev, intparm, irb)) | |
834 | return; | |
23d805b6 PO |
835 | cstat = irb->scsw.cmd.cstat; |
836 | dstat = irb->scsw.cmd.dstat; | |
4a71df50 FB |
837 | |
838 | card = CARD_FROM_CDEV(cdev); | |
839 | if (!card) | |
840 | return; | |
841 | ||
842 | if (card->read.ccwdev == cdev) { | |
843 | channel = &card->read; | |
d11ba0c4 | 844 | QETH_DBF_TEXT(TRACE, 5, "read"); |
4a71df50 FB |
845 | } else if (card->write.ccwdev == cdev) { |
846 | channel = &card->write; | |
d11ba0c4 | 847 | QETH_DBF_TEXT(TRACE, 5, "write"); |
4a71df50 FB |
848 | } else { |
849 | channel = &card->data; | |
d11ba0c4 | 850 | QETH_DBF_TEXT(TRACE, 5, "data"); |
4a71df50 FB |
851 | } |
852 | atomic_set(&channel->irq_pending, 0); | |
853 | ||
23d805b6 | 854 | if (irb->scsw.cmd.fctl & (SCSW_FCTL_CLEAR_FUNC)) |
4a71df50 FB |
855 | channel->state = CH_STATE_STOPPED; |
856 | ||
23d805b6 | 857 | if (irb->scsw.cmd.fctl & (SCSW_FCTL_HALT_FUNC)) |
4a71df50 FB |
858 | channel->state = CH_STATE_HALTED; |
859 | ||
860 | /*let's wake up immediately on data channel*/ | |
861 | if ((channel == &card->data) && (intparm != 0) && | |
862 | (intparm != QETH_RCD_PARM)) | |
863 | goto out; | |
864 | ||
865 | if (intparm == QETH_CLEAR_CHANNEL_PARM) { | |
d11ba0c4 | 866 | QETH_DBF_TEXT(TRACE, 6, "clrchpar"); |
4a71df50 FB |
867 | /* we don't have to handle this further */ |
868 | intparm = 0; | |
869 | } | |
870 | if (intparm == QETH_HALT_CHANNEL_PARM) { | |
d11ba0c4 | 871 | QETH_DBF_TEXT(TRACE, 6, "hltchpar"); |
4a71df50 FB |
872 | /* we don't have to handle this further */ |
873 | intparm = 0; | |
874 | } | |
875 | if ((dstat & DEV_STAT_UNIT_EXCEP) || | |
876 | (dstat & DEV_STAT_UNIT_CHECK) || | |
877 | (cstat)) { | |
878 | if (irb->esw.esw0.erw.cons) { | |
74eacdb9 FB |
879 | dev_warn(&channel->ccwdev->dev, |
880 | "The qeth device driver failed to recover " | |
881 | "an error on the device\n"); | |
882 | QETH_DBF_MESSAGE(2, "%s sense data available. cstat " | |
883 | "0x%X dstat 0x%X\n", | |
884 | dev_name(&channel->ccwdev->dev), cstat, dstat); | |
4a71df50 FB |
885 | print_hex_dump(KERN_WARNING, "qeth: irb ", |
886 | DUMP_PREFIX_OFFSET, 16, 1, irb, 32, 1); | |
887 | print_hex_dump(KERN_WARNING, "qeth: sense data ", | |
888 | DUMP_PREFIX_OFFSET, 16, 1, irb->ecw, 32, 1); | |
889 | } | |
890 | if (intparm == QETH_RCD_PARM) { | |
891 | channel->state = CH_STATE_DOWN; | |
892 | goto out; | |
893 | } | |
894 | rc = qeth_get_problem(cdev, irb); | |
895 | if (rc) { | |
28a7e4c9 | 896 | qeth_clear_ipacmd_list(card); |
4a71df50 FB |
897 | qeth_schedule_recovery(card); |
898 | goto out; | |
899 | } | |
900 | } | |
901 | ||
902 | if (intparm == QETH_RCD_PARM) { | |
903 | channel->state = CH_STATE_RCD_DONE; | |
904 | goto out; | |
905 | } | |
906 | if (intparm) { | |
907 | buffer = (struct qeth_cmd_buffer *) __va((addr_t)intparm); | |
908 | buffer->state = BUF_STATE_PROCESSED; | |
909 | } | |
910 | if (channel == &card->data) | |
911 | return; | |
912 | if (channel == &card->read && | |
913 | channel->state == CH_STATE_UP) | |
914 | qeth_issue_next_read(card); | |
915 | ||
916 | iob = channel->iob; | |
917 | index = channel->buf_no; | |
918 | while (iob[index].state == BUF_STATE_PROCESSED) { | |
919 | if (iob[index].callback != NULL) | |
920 | iob[index].callback(channel, iob + index); | |
921 | ||
922 | index = (index + 1) % QETH_CMD_BUFFER_NO; | |
923 | } | |
924 | channel->buf_no = index; | |
925 | out: | |
926 | wake_up(&card->wait_q); | |
927 | return; | |
928 | } | |
929 | ||
58490f18 KDW |
930 | static void __qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, |
931 | struct qeth_qdio_out_buffer *buf, unsigned int qeth_skip_skb) | |
4a71df50 FB |
932 | { |
933 | int i; | |
934 | struct sk_buff *skb; | |
935 | ||
936 | /* is PCI flag set on buffer? */ | |
937 | if (buf->buffer->element[0].flags & 0x40) | |
938 | atomic_dec(&queue->set_pci_flags_count); | |
939 | ||
58490f18 | 940 | if (!qeth_skip_skb) { |
4a71df50 | 941 | skb = skb_dequeue(&buf->skb_list); |
58490f18 KDW |
942 | while (skb) { |
943 | atomic_dec(&skb->users); | |
944 | dev_kfree_skb_any(skb); | |
945 | skb = skb_dequeue(&buf->skb_list); | |
946 | } | |
4a71df50 | 947 | } |
4a71df50 | 948 | for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(queue->card); ++i) { |
683d718a FB |
949 | if (buf->buffer->element[i].addr && buf->is_header[i]) |
950 | kmem_cache_free(qeth_core_header_cache, | |
951 | buf->buffer->element[i].addr); | |
952 | buf->is_header[i] = 0; | |
4a71df50 FB |
953 | buf->buffer->element[i].length = 0; |
954 | buf->buffer->element[i].addr = NULL; | |
955 | buf->buffer->element[i].flags = 0; | |
956 | } | |
9f29f6de | 957 | buf->buffer->element[15].flags = 0; |
4a71df50 FB |
958 | buf->next_element_to_fill = 0; |
959 | atomic_set(&buf->state, QETH_QDIO_BUF_EMPTY); | |
960 | } | |
961 | ||
58490f18 KDW |
962 | static void qeth_clear_output_buffer(struct qeth_qdio_out_q *queue, |
963 | struct qeth_qdio_out_buffer *buf) | |
964 | { | |
965 | __qeth_clear_output_buffer(queue, buf, 0); | |
966 | } | |
967 | ||
4a71df50 FB |
968 | void qeth_clear_qdio_buffers(struct qeth_card *card) |
969 | { | |
970 | int i, j; | |
971 | ||
d11ba0c4 | 972 | QETH_DBF_TEXT(TRACE, 2, "clearqdbf"); |
4a71df50 FB |
973 | /* clear outbound buffers to free skbs */ |
974 | for (i = 0; i < card->qdio.no_out_queues; ++i) | |
975 | if (card->qdio.out_qs[i]) { | |
976 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) | |
977 | qeth_clear_output_buffer(card->qdio.out_qs[i], | |
978 | &card->qdio.out_qs[i]->bufs[j]); | |
979 | } | |
980 | } | |
981 | EXPORT_SYMBOL_GPL(qeth_clear_qdio_buffers); | |
982 | ||
983 | static void qeth_free_buffer_pool(struct qeth_card *card) | |
984 | { | |
985 | struct qeth_buffer_pool_entry *pool_entry, *tmp; | |
986 | int i = 0; | |
d11ba0c4 | 987 | QETH_DBF_TEXT(TRACE, 5, "freepool"); |
4a71df50 FB |
988 | list_for_each_entry_safe(pool_entry, tmp, |
989 | &card->qdio.init_pool.entry_list, init_list){ | |
990 | for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) | |
991 | free_page((unsigned long)pool_entry->elements[i]); | |
992 | list_del(&pool_entry->init_list); | |
993 | kfree(pool_entry); | |
994 | } | |
995 | } | |
996 | ||
997 | static void qeth_free_qdio_buffers(struct qeth_card *card) | |
998 | { | |
999 | int i, j; | |
1000 | ||
d11ba0c4 | 1001 | QETH_DBF_TEXT(TRACE, 2, "freeqdbf"); |
4a71df50 FB |
1002 | if (atomic_xchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED) == |
1003 | QETH_QDIO_UNINITIALIZED) | |
1004 | return; | |
1005 | kfree(card->qdio.in_q); | |
1006 | card->qdio.in_q = NULL; | |
1007 | /* inbound buffer pool */ | |
1008 | qeth_free_buffer_pool(card); | |
1009 | /* free outbound qdio_qs */ | |
1010 | if (card->qdio.out_qs) { | |
1011 | for (i = 0; i < card->qdio.no_out_queues; ++i) { | |
1012 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) | |
1013 | qeth_clear_output_buffer(card->qdio.out_qs[i], | |
1014 | &card->qdio.out_qs[i]->bufs[j]); | |
1015 | kfree(card->qdio.out_qs[i]); | |
1016 | } | |
1017 | kfree(card->qdio.out_qs); | |
1018 | card->qdio.out_qs = NULL; | |
1019 | } | |
1020 | } | |
1021 | ||
1022 | static void qeth_clean_channel(struct qeth_channel *channel) | |
1023 | { | |
1024 | int cnt; | |
1025 | ||
d11ba0c4 | 1026 | QETH_DBF_TEXT(SETUP, 2, "freech"); |
4a71df50 FB |
1027 | for (cnt = 0; cnt < QETH_CMD_BUFFER_NO; cnt++) |
1028 | kfree(channel->iob[cnt].data); | |
1029 | } | |
1030 | ||
1031 | static int qeth_is_1920_device(struct qeth_card *card) | |
1032 | { | |
1033 | int single_queue = 0; | |
1034 | struct ccw_device *ccwdev; | |
1035 | struct channelPath_dsc { | |
1036 | u8 flags; | |
1037 | u8 lsn; | |
1038 | u8 desc; | |
1039 | u8 chpid; | |
1040 | u8 swla; | |
1041 | u8 zeroes; | |
1042 | u8 chla; | |
1043 | u8 chpp; | |
1044 | } *chp_dsc; | |
1045 | ||
d11ba0c4 | 1046 | QETH_DBF_TEXT(SETUP, 2, "chk_1920"); |
4a71df50 FB |
1047 | |
1048 | ccwdev = card->data.ccwdev; | |
1049 | chp_dsc = (struct channelPath_dsc *)ccw_device_get_chp_desc(ccwdev, 0); | |
1050 | if (chp_dsc != NULL) { | |
1051 | /* CHPP field bit 6 == 1 -> single queue */ | |
1052 | single_queue = ((chp_dsc->chpp & 0x02) == 0x02); | |
1053 | kfree(chp_dsc); | |
1054 | } | |
d11ba0c4 | 1055 | QETH_DBF_TEXT_(SETUP, 2, "rc:%x", single_queue); |
4a71df50 FB |
1056 | return single_queue; |
1057 | } | |
1058 | ||
1059 | static void qeth_init_qdio_info(struct qeth_card *card) | |
1060 | { | |
d11ba0c4 | 1061 | QETH_DBF_TEXT(SETUP, 4, "intqdinf"); |
4a71df50 FB |
1062 | atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); |
1063 | /* inbound */ | |
1064 | card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; | |
1065 | card->qdio.init_pool.buf_count = QETH_IN_BUF_COUNT_DEFAULT; | |
1066 | card->qdio.in_buf_pool.buf_count = card->qdio.init_pool.buf_count; | |
1067 | INIT_LIST_HEAD(&card->qdio.in_buf_pool.entry_list); | |
1068 | INIT_LIST_HEAD(&card->qdio.init_pool.entry_list); | |
1069 | } | |
1070 | ||
1071 | static void qeth_set_intial_options(struct qeth_card *card) | |
1072 | { | |
1073 | card->options.route4.type = NO_ROUTER; | |
1074 | card->options.route6.type = NO_ROUTER; | |
1075 | card->options.checksum_type = QETH_CHECKSUM_DEFAULT; | |
1076 | card->options.broadcast_mode = QETH_TR_BROADCAST_ALLRINGS; | |
1077 | card->options.macaddr_mode = QETH_TR_MACADDR_NONCANONICAL; | |
1078 | card->options.fake_broadcast = 0; | |
1079 | card->options.add_hhlen = DEFAULT_ADD_HHLEN; | |
4a71df50 FB |
1080 | card->options.performance_stats = 0; |
1081 | card->options.rx_sg_cb = QETH_RX_SG_CB; | |
1082 | } | |
1083 | ||
1084 | static int qeth_do_start_thread(struct qeth_card *card, unsigned long thread) | |
1085 | { | |
1086 | unsigned long flags; | |
1087 | int rc = 0; | |
1088 | ||
1089 | spin_lock_irqsave(&card->thread_mask_lock, flags); | |
d11ba0c4 | 1090 | QETH_DBF_TEXT_(TRACE, 4, " %02x%02x%02x", |
4a71df50 FB |
1091 | (u8) card->thread_start_mask, |
1092 | (u8) card->thread_allowed_mask, | |
1093 | (u8) card->thread_running_mask); | |
1094 | rc = (card->thread_start_mask & thread); | |
1095 | spin_unlock_irqrestore(&card->thread_mask_lock, flags); | |
1096 | return rc; | |
1097 | } | |
1098 | ||
1099 | static void qeth_start_kernel_thread(struct work_struct *work) | |
1100 | { | |
1101 | struct qeth_card *card = container_of(work, struct qeth_card, | |
1102 | kernel_thread_starter); | |
d11ba0c4 | 1103 | QETH_DBF_TEXT(TRACE , 2, "strthrd"); |
4a71df50 FB |
1104 | |
1105 | if (card->read.state != CH_STATE_UP && | |
1106 | card->write.state != CH_STATE_UP) | |
1107 | return; | |
1108 | if (qeth_do_start_thread(card, QETH_RECOVER_THREAD)) | |
1109 | kthread_run(card->discipline.recover, (void *) card, | |
1110 | "qeth_recover"); | |
1111 | } | |
1112 | ||
1113 | static int qeth_setup_card(struct qeth_card *card) | |
1114 | { | |
1115 | ||
d11ba0c4 PT |
1116 | QETH_DBF_TEXT(SETUP, 2, "setupcrd"); |
1117 | QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); | |
4a71df50 FB |
1118 | |
1119 | card->read.state = CH_STATE_DOWN; | |
1120 | card->write.state = CH_STATE_DOWN; | |
1121 | card->data.state = CH_STATE_DOWN; | |
1122 | card->state = CARD_STATE_DOWN; | |
1123 | card->lan_online = 0; | |
1124 | card->use_hard_stop = 0; | |
1125 | card->dev = NULL; | |
1126 | spin_lock_init(&card->vlanlock); | |
1127 | spin_lock_init(&card->mclock); | |
1128 | card->vlangrp = NULL; | |
1129 | spin_lock_init(&card->lock); | |
1130 | spin_lock_init(&card->ip_lock); | |
1131 | spin_lock_init(&card->thread_mask_lock); | |
1132 | card->thread_start_mask = 0; | |
1133 | card->thread_allowed_mask = 0; | |
1134 | card->thread_running_mask = 0; | |
1135 | INIT_WORK(&card->kernel_thread_starter, qeth_start_kernel_thread); | |
1136 | INIT_LIST_HEAD(&card->ip_list); | |
1137 | card->ip_tbd_list = kmalloc(sizeof(struct list_head), GFP_KERNEL); | |
1138 | if (!card->ip_tbd_list) { | |
d11ba0c4 | 1139 | QETH_DBF_TEXT(SETUP, 0, "iptbdnom"); |
4a71df50 FB |
1140 | return -ENOMEM; |
1141 | } | |
1142 | INIT_LIST_HEAD(card->ip_tbd_list); | |
1143 | INIT_LIST_HEAD(&card->cmd_waiter_list); | |
1144 | init_waitqueue_head(&card->wait_q); | |
1145 | /* intial options */ | |
1146 | qeth_set_intial_options(card); | |
1147 | /* IP address takeover */ | |
1148 | INIT_LIST_HEAD(&card->ipato.entries); | |
1149 | card->ipato.enabled = 0; | |
1150 | card->ipato.invert4 = 0; | |
1151 | card->ipato.invert6 = 0; | |
b9139800 UB |
1152 | if (card->info.type == QETH_CARD_TYPE_IQD) |
1153 | card->options.checksum_type = NO_CHECKSUMMING; | |
4a71df50 FB |
1154 | /* init QDIO stuff */ |
1155 | qeth_init_qdio_info(card); | |
1156 | return 0; | |
1157 | } | |
1158 | ||
6bcac508 MS |
1159 | static void qeth_core_sl_print(struct seq_file *m, struct service_level *slr) |
1160 | { | |
1161 | struct qeth_card *card = container_of(slr, struct qeth_card, | |
1162 | qeth_service_level); | |
0d788c7d KDW |
1163 | if (card->info.mcl_level[0]) |
1164 | seq_printf(m, "qeth: %s firmware level %s\n", | |
1165 | CARD_BUS_ID(card), card->info.mcl_level); | |
6bcac508 MS |
1166 | } |
1167 | ||
4a71df50 FB |
1168 | static struct qeth_card *qeth_alloc_card(void) |
1169 | { | |
1170 | struct qeth_card *card; | |
1171 | ||
d11ba0c4 | 1172 | QETH_DBF_TEXT(SETUP, 2, "alloccrd"); |
4a71df50 FB |
1173 | card = kzalloc(sizeof(struct qeth_card), GFP_DMA|GFP_KERNEL); |
1174 | if (!card) | |
1175 | return NULL; | |
d11ba0c4 | 1176 | QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); |
4a71df50 FB |
1177 | if (qeth_setup_channel(&card->read)) { |
1178 | kfree(card); | |
1179 | return NULL; | |
1180 | } | |
1181 | if (qeth_setup_channel(&card->write)) { | |
1182 | qeth_clean_channel(&card->read); | |
1183 | kfree(card); | |
1184 | return NULL; | |
1185 | } | |
1186 | card->options.layer2 = -1; | |
6bcac508 MS |
1187 | card->qeth_service_level.seq_print = qeth_core_sl_print; |
1188 | register_service_level(&card->qeth_service_level); | |
4a71df50 FB |
1189 | return card; |
1190 | } | |
1191 | ||
1192 | static int qeth_determine_card_type(struct qeth_card *card) | |
1193 | { | |
1194 | int i = 0; | |
1195 | ||
d11ba0c4 | 1196 | QETH_DBF_TEXT(SETUP, 2, "detcdtyp"); |
4a71df50 FB |
1197 | |
1198 | card->qdio.do_prio_queueing = QETH_PRIOQ_DEFAULT; | |
1199 | card->qdio.default_out_queue = QETH_DEFAULT_QUEUE; | |
1200 | while (known_devices[i][4]) { | |
1201 | if ((CARD_RDEV(card)->id.dev_type == known_devices[i][2]) && | |
1202 | (CARD_RDEV(card)->id.dev_model == known_devices[i][3])) { | |
1203 | card->info.type = known_devices[i][4]; | |
1204 | card->qdio.no_out_queues = known_devices[i][8]; | |
1205 | card->info.is_multicast_different = known_devices[i][9]; | |
1206 | if (qeth_is_1920_device(card)) { | |
74eacdb9 FB |
1207 | dev_info(&card->gdev->dev, |
1208 | "Priority Queueing not supported\n"); | |
4a71df50 FB |
1209 | card->qdio.no_out_queues = 1; |
1210 | card->qdio.default_out_queue = 0; | |
1211 | } | |
1212 | return 0; | |
1213 | } | |
1214 | i++; | |
1215 | } | |
1216 | card->info.type = QETH_CARD_TYPE_UNKNOWN; | |
74eacdb9 FB |
1217 | dev_err(&card->gdev->dev, "The adapter hardware is of an " |
1218 | "unknown type\n"); | |
4a71df50 FB |
1219 | return -ENOENT; |
1220 | } | |
1221 | ||
1222 | static int qeth_clear_channel(struct qeth_channel *channel) | |
1223 | { | |
1224 | unsigned long flags; | |
1225 | struct qeth_card *card; | |
1226 | int rc; | |
1227 | ||
d11ba0c4 | 1228 | QETH_DBF_TEXT(TRACE, 3, "clearch"); |
4a71df50 FB |
1229 | card = CARD_FROM_CDEV(channel->ccwdev); |
1230 | spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); | |
1231 | rc = ccw_device_clear(channel->ccwdev, QETH_CLEAR_CHANNEL_PARM); | |
1232 | spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); | |
1233 | ||
1234 | if (rc) | |
1235 | return rc; | |
1236 | rc = wait_event_interruptible_timeout(card->wait_q, | |
1237 | channel->state == CH_STATE_STOPPED, QETH_TIMEOUT); | |
1238 | if (rc == -ERESTARTSYS) | |
1239 | return rc; | |
1240 | if (channel->state != CH_STATE_STOPPED) | |
1241 | return -ETIME; | |
1242 | channel->state = CH_STATE_DOWN; | |
1243 | return 0; | |
1244 | } | |
1245 | ||
1246 | static int qeth_halt_channel(struct qeth_channel *channel) | |
1247 | { | |
1248 | unsigned long flags; | |
1249 | struct qeth_card *card; | |
1250 | int rc; | |
1251 | ||
d11ba0c4 | 1252 | QETH_DBF_TEXT(TRACE, 3, "haltch"); |
4a71df50 FB |
1253 | card = CARD_FROM_CDEV(channel->ccwdev); |
1254 | spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); | |
1255 | rc = ccw_device_halt(channel->ccwdev, QETH_HALT_CHANNEL_PARM); | |
1256 | spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); | |
1257 | ||
1258 | if (rc) | |
1259 | return rc; | |
1260 | rc = wait_event_interruptible_timeout(card->wait_q, | |
1261 | channel->state == CH_STATE_HALTED, QETH_TIMEOUT); | |
1262 | if (rc == -ERESTARTSYS) | |
1263 | return rc; | |
1264 | if (channel->state != CH_STATE_HALTED) | |
1265 | return -ETIME; | |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | static int qeth_halt_channels(struct qeth_card *card) | |
1270 | { | |
1271 | int rc1 = 0, rc2 = 0, rc3 = 0; | |
1272 | ||
d11ba0c4 | 1273 | QETH_DBF_TEXT(TRACE, 3, "haltchs"); |
4a71df50 FB |
1274 | rc1 = qeth_halt_channel(&card->read); |
1275 | rc2 = qeth_halt_channel(&card->write); | |
1276 | rc3 = qeth_halt_channel(&card->data); | |
1277 | if (rc1) | |
1278 | return rc1; | |
1279 | if (rc2) | |
1280 | return rc2; | |
1281 | return rc3; | |
1282 | } | |
1283 | ||
1284 | static int qeth_clear_channels(struct qeth_card *card) | |
1285 | { | |
1286 | int rc1 = 0, rc2 = 0, rc3 = 0; | |
1287 | ||
d11ba0c4 | 1288 | QETH_DBF_TEXT(TRACE, 3, "clearchs"); |
4a71df50 FB |
1289 | rc1 = qeth_clear_channel(&card->read); |
1290 | rc2 = qeth_clear_channel(&card->write); | |
1291 | rc3 = qeth_clear_channel(&card->data); | |
1292 | if (rc1) | |
1293 | return rc1; | |
1294 | if (rc2) | |
1295 | return rc2; | |
1296 | return rc3; | |
1297 | } | |
1298 | ||
1299 | static int qeth_clear_halt_card(struct qeth_card *card, int halt) | |
1300 | { | |
1301 | int rc = 0; | |
1302 | ||
d11ba0c4 PT |
1303 | QETH_DBF_TEXT(TRACE, 3, "clhacrd"); |
1304 | QETH_DBF_HEX(TRACE, 3, &card, sizeof(void *)); | |
4a71df50 FB |
1305 | |
1306 | if (halt) | |
1307 | rc = qeth_halt_channels(card); | |
1308 | if (rc) | |
1309 | return rc; | |
1310 | return qeth_clear_channels(card); | |
1311 | } | |
1312 | ||
1313 | int qeth_qdio_clear_card(struct qeth_card *card, int use_halt) | |
1314 | { | |
1315 | int rc = 0; | |
1316 | ||
d11ba0c4 | 1317 | QETH_DBF_TEXT(TRACE, 3, "qdioclr"); |
4a71df50 FB |
1318 | switch (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ESTABLISHED, |
1319 | QETH_QDIO_CLEANING)) { | |
1320 | case QETH_QDIO_ESTABLISHED: | |
1321 | if (card->info.type == QETH_CARD_TYPE_IQD) | |
1322 | rc = qdio_cleanup(CARD_DDEV(card), | |
1323 | QDIO_FLAG_CLEANUP_USING_HALT); | |
1324 | else | |
1325 | rc = qdio_cleanup(CARD_DDEV(card), | |
1326 | QDIO_FLAG_CLEANUP_USING_CLEAR); | |
1327 | if (rc) | |
d11ba0c4 | 1328 | QETH_DBF_TEXT_(TRACE, 3, "1err%d", rc); |
4a71df50 FB |
1329 | atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); |
1330 | break; | |
1331 | case QETH_QDIO_CLEANING: | |
1332 | return rc; | |
1333 | default: | |
1334 | break; | |
1335 | } | |
1336 | rc = qeth_clear_halt_card(card, use_halt); | |
1337 | if (rc) | |
d11ba0c4 | 1338 | QETH_DBF_TEXT_(TRACE, 3, "2err%d", rc); |
4a71df50 FB |
1339 | card->state = CARD_STATE_DOWN; |
1340 | return rc; | |
1341 | } | |
1342 | EXPORT_SYMBOL_GPL(qeth_qdio_clear_card); | |
1343 | ||
1344 | static int qeth_read_conf_data(struct qeth_card *card, void **buffer, | |
1345 | int *length) | |
1346 | { | |
1347 | struct ciw *ciw; | |
1348 | char *rcd_buf; | |
1349 | int ret; | |
1350 | struct qeth_channel *channel = &card->data; | |
1351 | unsigned long flags; | |
1352 | ||
1353 | /* | |
1354 | * scan for RCD command in extended SenseID data | |
1355 | */ | |
1356 | ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD); | |
1357 | if (!ciw || ciw->cmd == 0) | |
1358 | return -EOPNOTSUPP; | |
1359 | rcd_buf = kzalloc(ciw->count, GFP_KERNEL | GFP_DMA); | |
1360 | if (!rcd_buf) | |
1361 | return -ENOMEM; | |
1362 | ||
1363 | channel->ccw.cmd_code = ciw->cmd; | |
1364 | channel->ccw.cda = (__u32) __pa(rcd_buf); | |
1365 | channel->ccw.count = ciw->count; | |
1366 | channel->ccw.flags = CCW_FLAG_SLI; | |
1367 | channel->state = CH_STATE_RCD; | |
1368 | spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); | |
1369 | ret = ccw_device_start_timeout(channel->ccwdev, &channel->ccw, | |
1370 | QETH_RCD_PARM, LPM_ANYPATH, 0, | |
1371 | QETH_RCD_TIMEOUT); | |
1372 | spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); | |
1373 | if (!ret) | |
1374 | wait_event(card->wait_q, | |
1375 | (channel->state == CH_STATE_RCD_DONE || | |
1376 | channel->state == CH_STATE_DOWN)); | |
1377 | if (channel->state == CH_STATE_DOWN) | |
1378 | ret = -EIO; | |
1379 | else | |
1380 | channel->state = CH_STATE_DOWN; | |
1381 | if (ret) { | |
1382 | kfree(rcd_buf); | |
1383 | *buffer = NULL; | |
1384 | *length = 0; | |
1385 | } else { | |
1386 | *length = ciw->count; | |
1387 | *buffer = rcd_buf; | |
1388 | } | |
1389 | return ret; | |
1390 | } | |
1391 | ||
1392 | static int qeth_get_unitaddr(struct qeth_card *card) | |
1393 | { | |
1394 | int length; | |
1395 | char *prcd; | |
1396 | int rc; | |
1397 | ||
d11ba0c4 | 1398 | QETH_DBF_TEXT(SETUP, 2, "getunit"); |
4a71df50 FB |
1399 | rc = qeth_read_conf_data(card, (void **) &prcd, &length); |
1400 | if (rc) { | |
74eacdb9 FB |
1401 | QETH_DBF_MESSAGE(2, "%s qeth_read_conf_data returned %i\n", |
1402 | dev_name(&card->gdev->dev), rc); | |
4a71df50 FB |
1403 | return rc; |
1404 | } | |
1405 | card->info.chpid = prcd[30]; | |
1406 | card->info.unit_addr2 = prcd[31]; | |
1407 | card->info.cula = prcd[63]; | |
1408 | card->info.guestlan = ((prcd[0x10] == _ascebc['V']) && | |
1409 | (prcd[0x11] == _ascebc['M'])); | |
1410 | kfree(prcd); | |
1411 | return 0; | |
1412 | } | |
1413 | ||
1414 | static void qeth_init_tokens(struct qeth_card *card) | |
1415 | { | |
1416 | card->token.issuer_rm_w = 0x00010103UL; | |
1417 | card->token.cm_filter_w = 0x00010108UL; | |
1418 | card->token.cm_connection_w = 0x0001010aUL; | |
1419 | card->token.ulp_filter_w = 0x0001010bUL; | |
1420 | card->token.ulp_connection_w = 0x0001010dUL; | |
1421 | } | |
1422 | ||
1423 | static void qeth_init_func_level(struct qeth_card *card) | |
1424 | { | |
1425 | if (card->ipato.enabled) { | |
1426 | if (card->info.type == QETH_CARD_TYPE_IQD) | |
1427 | card->info.func_level = | |
1428 | QETH_IDX_FUNC_LEVEL_IQD_ENA_IPAT; | |
1429 | else | |
1430 | card->info.func_level = | |
1431 | QETH_IDX_FUNC_LEVEL_OSAE_ENA_IPAT; | |
1432 | } else { | |
1433 | if (card->info.type == QETH_CARD_TYPE_IQD) | |
1434 | /*FIXME:why do we have same values for dis and ena for | |
1435 | osae??? */ | |
1436 | card->info.func_level = | |
1437 | QETH_IDX_FUNC_LEVEL_IQD_DIS_IPAT; | |
1438 | else | |
1439 | card->info.func_level = | |
1440 | QETH_IDX_FUNC_LEVEL_OSAE_DIS_IPAT; | |
1441 | } | |
1442 | } | |
1443 | ||
4a71df50 FB |
1444 | static int qeth_idx_activate_get_answer(struct qeth_channel *channel, |
1445 | void (*idx_reply_cb)(struct qeth_channel *, | |
1446 | struct qeth_cmd_buffer *)) | |
1447 | { | |
1448 | struct qeth_cmd_buffer *iob; | |
1449 | unsigned long flags; | |
1450 | int rc; | |
1451 | struct qeth_card *card; | |
1452 | ||
d11ba0c4 | 1453 | QETH_DBF_TEXT(SETUP, 2, "idxanswr"); |
4a71df50 FB |
1454 | card = CARD_FROM_CDEV(channel->ccwdev); |
1455 | iob = qeth_get_buffer(channel); | |
1456 | iob->callback = idx_reply_cb; | |
1457 | memcpy(&channel->ccw, READ_CCW, sizeof(struct ccw1)); | |
1458 | channel->ccw.count = QETH_BUFSIZE; | |
1459 | channel->ccw.cda = (__u32) __pa(iob->data); | |
1460 | ||
1461 | wait_event(card->wait_q, | |
1462 | atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); | |
d11ba0c4 | 1463 | QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); |
4a71df50 FB |
1464 | spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); |
1465 | rc = ccw_device_start(channel->ccwdev, | |
1466 | &channel->ccw, (addr_t) iob, 0, 0); | |
1467 | spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); | |
1468 | ||
1469 | if (rc) { | |
14cc21b6 | 1470 | QETH_DBF_MESSAGE(2, "Error2 in activating channel rc=%d\n", rc); |
d11ba0c4 | 1471 | QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); |
4a71df50 FB |
1472 | atomic_set(&channel->irq_pending, 0); |
1473 | wake_up(&card->wait_q); | |
1474 | return rc; | |
1475 | } | |
1476 | rc = wait_event_interruptible_timeout(card->wait_q, | |
1477 | channel->state == CH_STATE_UP, QETH_TIMEOUT); | |
1478 | if (rc == -ERESTARTSYS) | |
1479 | return rc; | |
1480 | if (channel->state != CH_STATE_UP) { | |
1481 | rc = -ETIME; | |
d11ba0c4 | 1482 | QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); |
4a71df50 FB |
1483 | qeth_clear_cmd_buffers(channel); |
1484 | } else | |
1485 | rc = 0; | |
1486 | return rc; | |
1487 | } | |
1488 | ||
1489 | static int qeth_idx_activate_channel(struct qeth_channel *channel, | |
1490 | void (*idx_reply_cb)(struct qeth_channel *, | |
1491 | struct qeth_cmd_buffer *)) | |
1492 | { | |
1493 | struct qeth_card *card; | |
1494 | struct qeth_cmd_buffer *iob; | |
1495 | unsigned long flags; | |
1496 | __u16 temp; | |
1497 | __u8 tmp; | |
1498 | int rc; | |
f06f6f32 | 1499 | struct ccw_dev_id temp_devid; |
4a71df50 FB |
1500 | |
1501 | card = CARD_FROM_CDEV(channel->ccwdev); | |
1502 | ||
d11ba0c4 | 1503 | QETH_DBF_TEXT(SETUP, 2, "idxactch"); |
4a71df50 FB |
1504 | |
1505 | iob = qeth_get_buffer(channel); | |
1506 | iob->callback = idx_reply_cb; | |
1507 | memcpy(&channel->ccw, WRITE_CCW, sizeof(struct ccw1)); | |
1508 | channel->ccw.count = IDX_ACTIVATE_SIZE; | |
1509 | channel->ccw.cda = (__u32) __pa(iob->data); | |
1510 | if (channel == &card->write) { | |
1511 | memcpy(iob->data, IDX_ACTIVATE_WRITE, IDX_ACTIVATE_SIZE); | |
1512 | memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), | |
1513 | &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); | |
1514 | card->seqno.trans_hdr++; | |
1515 | } else { | |
1516 | memcpy(iob->data, IDX_ACTIVATE_READ, IDX_ACTIVATE_SIZE); | |
1517 | memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), | |
1518 | &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); | |
1519 | } | |
1520 | tmp = ((__u8)card->info.portno) | 0x80; | |
1521 | memcpy(QETH_IDX_ACT_PNO(iob->data), &tmp, 1); | |
1522 | memcpy(QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), | |
1523 | &card->token.issuer_rm_w, QETH_MPC_TOKEN_LENGTH); | |
1524 | memcpy(QETH_IDX_ACT_FUNC_LEVEL(iob->data), | |
1525 | &card->info.func_level, sizeof(__u16)); | |
f06f6f32 CH |
1526 | ccw_device_get_id(CARD_DDEV(card), &temp_devid); |
1527 | memcpy(QETH_IDX_ACT_QDIO_DEV_CUA(iob->data), &temp_devid.devno, 2); | |
4a71df50 FB |
1528 | temp = (card->info.cula << 8) + card->info.unit_addr2; |
1529 | memcpy(QETH_IDX_ACT_QDIO_DEV_REALADDR(iob->data), &temp, 2); | |
1530 | ||
1531 | wait_event(card->wait_q, | |
1532 | atomic_cmpxchg(&channel->irq_pending, 0, 1) == 0); | |
d11ba0c4 | 1533 | QETH_DBF_TEXT(SETUP, 6, "noirqpnd"); |
4a71df50 FB |
1534 | spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags); |
1535 | rc = ccw_device_start(channel->ccwdev, | |
1536 | &channel->ccw, (addr_t) iob, 0, 0); | |
1537 | spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags); | |
1538 | ||
1539 | if (rc) { | |
14cc21b6 FB |
1540 | QETH_DBF_MESSAGE(2, "Error1 in activating channel. rc=%d\n", |
1541 | rc); | |
d11ba0c4 | 1542 | QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); |
4a71df50 FB |
1543 | atomic_set(&channel->irq_pending, 0); |
1544 | wake_up(&card->wait_q); | |
1545 | return rc; | |
1546 | } | |
1547 | rc = wait_event_interruptible_timeout(card->wait_q, | |
1548 | channel->state == CH_STATE_ACTIVATING, QETH_TIMEOUT); | |
1549 | if (rc == -ERESTARTSYS) | |
1550 | return rc; | |
1551 | if (channel->state != CH_STATE_ACTIVATING) { | |
74eacdb9 FB |
1552 | dev_warn(&channel->ccwdev->dev, "The qeth device driver" |
1553 | " failed to recover an error on the device\n"); | |
1554 | QETH_DBF_MESSAGE(2, "%s IDX activate timed out\n", | |
1555 | dev_name(&channel->ccwdev->dev)); | |
d11ba0c4 | 1556 | QETH_DBF_TEXT_(SETUP, 2, "2err%d", -ETIME); |
4a71df50 FB |
1557 | qeth_clear_cmd_buffers(channel); |
1558 | return -ETIME; | |
1559 | } | |
1560 | return qeth_idx_activate_get_answer(channel, idx_reply_cb); | |
1561 | } | |
1562 | ||
1563 | static int qeth_peer_func_level(int level) | |
1564 | { | |
1565 | if ((level & 0xff) == 8) | |
1566 | return (level & 0xff) + 0x400; | |
1567 | if (((level >> 8) & 3) == 1) | |
1568 | return (level & 0xff) + 0x200; | |
1569 | return level; | |
1570 | } | |
1571 | ||
1572 | static void qeth_idx_write_cb(struct qeth_channel *channel, | |
1573 | struct qeth_cmd_buffer *iob) | |
1574 | { | |
1575 | struct qeth_card *card; | |
1576 | __u16 temp; | |
1577 | ||
d11ba0c4 | 1578 | QETH_DBF_TEXT(SETUP , 2, "idxwrcb"); |
4a71df50 FB |
1579 | |
1580 | if (channel->state == CH_STATE_DOWN) { | |
1581 | channel->state = CH_STATE_ACTIVATING; | |
1582 | goto out; | |
1583 | } | |
1584 | card = CARD_FROM_CDEV(channel->ccwdev); | |
1585 | ||
1586 | if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { | |
1587 | if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19) | |
74eacdb9 FB |
1588 | dev_err(&card->write.ccwdev->dev, |
1589 | "The adapter is used exclusively by another " | |
1590 | "host\n"); | |
4a71df50 | 1591 | else |
74eacdb9 FB |
1592 | QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel:" |
1593 | " negative reply\n", | |
1594 | dev_name(&card->write.ccwdev->dev)); | |
4a71df50 FB |
1595 | goto out; |
1596 | } | |
1597 | memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); | |
1598 | if ((temp & ~0x0100) != qeth_peer_func_level(card->info.func_level)) { | |
74eacdb9 FB |
1599 | QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on write channel: " |
1600 | "function level mismatch (sent: 0x%x, received: " | |
1601 | "0x%x)\n", dev_name(&card->write.ccwdev->dev), | |
1602 | card->info.func_level, temp); | |
4a71df50 FB |
1603 | goto out; |
1604 | } | |
1605 | channel->state = CH_STATE_UP; | |
1606 | out: | |
1607 | qeth_release_buffer(channel, iob); | |
1608 | } | |
1609 | ||
1610 | static void qeth_idx_read_cb(struct qeth_channel *channel, | |
1611 | struct qeth_cmd_buffer *iob) | |
1612 | { | |
1613 | struct qeth_card *card; | |
1614 | __u16 temp; | |
1615 | ||
d11ba0c4 | 1616 | QETH_DBF_TEXT(SETUP , 2, "idxrdcb"); |
4a71df50 FB |
1617 | if (channel->state == CH_STATE_DOWN) { |
1618 | channel->state = CH_STATE_ACTIVATING; | |
1619 | goto out; | |
1620 | } | |
1621 | ||
1622 | card = CARD_FROM_CDEV(channel->ccwdev); | |
1623 | if (qeth_check_idx_response(iob->data)) | |
1624 | goto out; | |
1625 | ||
1626 | if (!(QETH_IS_IDX_ACT_POS_REPLY(iob->data))) { | |
1627 | if (QETH_IDX_ACT_CAUSE_CODE(iob->data) == 0x19) | |
74eacdb9 FB |
1628 | dev_err(&card->write.ccwdev->dev, |
1629 | "The adapter is used exclusively by another " | |
1630 | "host\n"); | |
4a71df50 | 1631 | else |
74eacdb9 FB |
1632 | QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel:" |
1633 | " negative reply\n", | |
1634 | dev_name(&card->read.ccwdev->dev)); | |
4a71df50 FB |
1635 | goto out; |
1636 | } | |
1637 | ||
1638 | /** | |
1639 | * temporary fix for microcode bug | |
1640 | * to revert it,replace OR by AND | |
1641 | */ | |
1642 | if ((!QETH_IDX_NO_PORTNAME_REQUIRED(iob->data)) || | |
1643 | (card->info.type == QETH_CARD_TYPE_OSAE)) | |
1644 | card->info.portname_required = 1; | |
1645 | ||
1646 | memcpy(&temp, QETH_IDX_ACT_FUNC_LEVEL(iob->data), 2); | |
1647 | if (temp != qeth_peer_func_level(card->info.func_level)) { | |
74eacdb9 FB |
1648 | QETH_DBF_MESSAGE(2, "%s IDX_ACTIVATE on read channel: function " |
1649 | "level mismatch (sent: 0x%x, received: 0x%x)\n", | |
1650 | dev_name(&card->read.ccwdev->dev), | |
1651 | card->info.func_level, temp); | |
4a71df50 FB |
1652 | goto out; |
1653 | } | |
1654 | memcpy(&card->token.issuer_rm_r, | |
1655 | QETH_IDX_ACT_ISSUER_RM_TOKEN(iob->data), | |
1656 | QETH_MPC_TOKEN_LENGTH); | |
1657 | memcpy(&card->info.mcl_level[0], | |
1658 | QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH); | |
1659 | channel->state = CH_STATE_UP; | |
1660 | out: | |
1661 | qeth_release_buffer(channel, iob); | |
1662 | } | |
1663 | ||
1664 | void qeth_prepare_control_data(struct qeth_card *card, int len, | |
1665 | struct qeth_cmd_buffer *iob) | |
1666 | { | |
1667 | qeth_setup_ccw(&card->write, iob->data, len); | |
1668 | iob->callback = qeth_release_buffer; | |
1669 | ||
1670 | memcpy(QETH_TRANSPORT_HEADER_SEQ_NO(iob->data), | |
1671 | &card->seqno.trans_hdr, QETH_SEQ_NO_LENGTH); | |
1672 | card->seqno.trans_hdr++; | |
1673 | memcpy(QETH_PDU_HEADER_SEQ_NO(iob->data), | |
1674 | &card->seqno.pdu_hdr, QETH_SEQ_NO_LENGTH); | |
1675 | card->seqno.pdu_hdr++; | |
1676 | memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data), | |
1677 | &card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH); | |
d11ba0c4 | 1678 | QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); |
4a71df50 FB |
1679 | } |
1680 | EXPORT_SYMBOL_GPL(qeth_prepare_control_data); | |
1681 | ||
1682 | int qeth_send_control_data(struct qeth_card *card, int len, | |
1683 | struct qeth_cmd_buffer *iob, | |
1684 | int (*reply_cb)(struct qeth_card *, struct qeth_reply *, | |
1685 | unsigned long), | |
1686 | void *reply_param) | |
1687 | { | |
1688 | int rc; | |
1689 | unsigned long flags; | |
1690 | struct qeth_reply *reply = NULL; | |
7834cd5a | 1691 | unsigned long timeout, event_timeout; |
5b54e16f | 1692 | struct qeth_ipa_cmd *cmd; |
4a71df50 | 1693 | |
d11ba0c4 | 1694 | QETH_DBF_TEXT(TRACE, 2, "sendctl"); |
4a71df50 FB |
1695 | |
1696 | reply = qeth_alloc_reply(card); | |
1697 | if (!reply) { | |
4a71df50 FB |
1698 | return -ENOMEM; |
1699 | } | |
1700 | reply->callback = reply_cb; | |
1701 | reply->param = reply_param; | |
1702 | if (card->state == CARD_STATE_DOWN) | |
1703 | reply->seqno = QETH_IDX_COMMAND_SEQNO; | |
1704 | else | |
1705 | reply->seqno = card->seqno.ipa++; | |
1706 | init_waitqueue_head(&reply->wait_q); | |
1707 | spin_lock_irqsave(&card->lock, flags); | |
1708 | list_add_tail(&reply->list, &card->cmd_waiter_list); | |
1709 | spin_unlock_irqrestore(&card->lock, flags); | |
d11ba0c4 | 1710 | QETH_DBF_HEX(CTRL, 2, iob->data, QETH_DBF_CTRL_LEN); |
4a71df50 FB |
1711 | |
1712 | while (atomic_cmpxchg(&card->write.irq_pending, 0, 1)) ; | |
1713 | qeth_prepare_control_data(card, len, iob); | |
1714 | ||
1715 | if (IS_IPA(iob->data)) | |
7834cd5a | 1716 | event_timeout = QETH_IPA_TIMEOUT; |
4a71df50 | 1717 | else |
7834cd5a HC |
1718 | event_timeout = QETH_TIMEOUT; |
1719 | timeout = jiffies + event_timeout; | |
4a71df50 | 1720 | |
d11ba0c4 | 1721 | QETH_DBF_TEXT(TRACE, 6, "noirqpnd"); |
4a71df50 FB |
1722 | spin_lock_irqsave(get_ccwdev_lock(card->write.ccwdev), flags); |
1723 | rc = ccw_device_start(card->write.ccwdev, &card->write.ccw, | |
1724 | (addr_t) iob, 0, 0); | |
1725 | spin_unlock_irqrestore(get_ccwdev_lock(card->write.ccwdev), flags); | |
1726 | if (rc) { | |
74eacdb9 FB |
1727 | QETH_DBF_MESSAGE(2, "%s qeth_send_control_data: " |
1728 | "ccw_device_start rc = %i\n", | |
1729 | dev_name(&card->write.ccwdev->dev), rc); | |
d11ba0c4 | 1730 | QETH_DBF_TEXT_(TRACE, 2, " err%d", rc); |
4a71df50 FB |
1731 | spin_lock_irqsave(&card->lock, flags); |
1732 | list_del_init(&reply->list); | |
1733 | qeth_put_reply(reply); | |
1734 | spin_unlock_irqrestore(&card->lock, flags); | |
1735 | qeth_release_buffer(iob->channel, iob); | |
1736 | atomic_set(&card->write.irq_pending, 0); | |
1737 | wake_up(&card->wait_q); | |
1738 | return rc; | |
1739 | } | |
5b54e16f FB |
1740 | |
1741 | /* we have only one long running ipassist, since we can ensure | |
1742 | process context of this command we can sleep */ | |
1743 | cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); | |
1744 | if ((cmd->hdr.command == IPA_CMD_SETIP) && | |
1745 | (cmd->hdr.prot_version == QETH_PROT_IPV4)) { | |
1746 | if (!wait_event_timeout(reply->wait_q, | |
7834cd5a | 1747 | atomic_read(&reply->received), event_timeout)) |
5b54e16f FB |
1748 | goto time_err; |
1749 | } else { | |
1750 | while (!atomic_read(&reply->received)) { | |
1751 | if (time_after(jiffies, timeout)) | |
1752 | goto time_err; | |
1753 | cpu_relax(); | |
1754 | }; | |
1755 | } | |
1756 | ||
1757 | rc = reply->rc; | |
1758 | qeth_put_reply(reply); | |
1759 | return rc; | |
1760 | ||
1761 | time_err: | |
1762 | spin_lock_irqsave(&reply->card->lock, flags); | |
1763 | list_del_init(&reply->list); | |
1764 | spin_unlock_irqrestore(&reply->card->lock, flags); | |
1765 | reply->rc = -ETIME; | |
1766 | atomic_inc(&reply->received); | |
1767 | wake_up(&reply->wait_q); | |
4a71df50 FB |
1768 | rc = reply->rc; |
1769 | qeth_put_reply(reply); | |
1770 | return rc; | |
1771 | } | |
1772 | EXPORT_SYMBOL_GPL(qeth_send_control_data); | |
1773 | ||
1774 | static int qeth_cm_enable_cb(struct qeth_card *card, struct qeth_reply *reply, | |
1775 | unsigned long data) | |
1776 | { | |
1777 | struct qeth_cmd_buffer *iob; | |
1778 | ||
d11ba0c4 | 1779 | QETH_DBF_TEXT(SETUP, 2, "cmenblcb"); |
4a71df50 FB |
1780 | |
1781 | iob = (struct qeth_cmd_buffer *) data; | |
1782 | memcpy(&card->token.cm_filter_r, | |
1783 | QETH_CM_ENABLE_RESP_FILTER_TOKEN(iob->data), | |
1784 | QETH_MPC_TOKEN_LENGTH); | |
d11ba0c4 | 1785 | QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); |
4a71df50 FB |
1786 | return 0; |
1787 | } | |
1788 | ||
1789 | static int qeth_cm_enable(struct qeth_card *card) | |
1790 | { | |
1791 | int rc; | |
1792 | struct qeth_cmd_buffer *iob; | |
1793 | ||
d11ba0c4 | 1794 | QETH_DBF_TEXT(SETUP, 2, "cmenable"); |
4a71df50 FB |
1795 | |
1796 | iob = qeth_wait_for_buffer(&card->write); | |
1797 | memcpy(iob->data, CM_ENABLE, CM_ENABLE_SIZE); | |
1798 | memcpy(QETH_CM_ENABLE_ISSUER_RM_TOKEN(iob->data), | |
1799 | &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); | |
1800 | memcpy(QETH_CM_ENABLE_FILTER_TOKEN(iob->data), | |
1801 | &card->token.cm_filter_w, QETH_MPC_TOKEN_LENGTH); | |
1802 | ||
1803 | rc = qeth_send_control_data(card, CM_ENABLE_SIZE, iob, | |
1804 | qeth_cm_enable_cb, NULL); | |
1805 | return rc; | |
1806 | } | |
1807 | ||
1808 | static int qeth_cm_setup_cb(struct qeth_card *card, struct qeth_reply *reply, | |
1809 | unsigned long data) | |
1810 | { | |
1811 | ||
1812 | struct qeth_cmd_buffer *iob; | |
1813 | ||
d11ba0c4 | 1814 | QETH_DBF_TEXT(SETUP, 2, "cmsetpcb"); |
4a71df50 FB |
1815 | |
1816 | iob = (struct qeth_cmd_buffer *) data; | |
1817 | memcpy(&card->token.cm_connection_r, | |
1818 | QETH_CM_SETUP_RESP_DEST_ADDR(iob->data), | |
1819 | QETH_MPC_TOKEN_LENGTH); | |
d11ba0c4 | 1820 | QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); |
4a71df50 FB |
1821 | return 0; |
1822 | } | |
1823 | ||
1824 | static int qeth_cm_setup(struct qeth_card *card) | |
1825 | { | |
1826 | int rc; | |
1827 | struct qeth_cmd_buffer *iob; | |
1828 | ||
d11ba0c4 | 1829 | QETH_DBF_TEXT(SETUP, 2, "cmsetup"); |
4a71df50 FB |
1830 | |
1831 | iob = qeth_wait_for_buffer(&card->write); | |
1832 | memcpy(iob->data, CM_SETUP, CM_SETUP_SIZE); | |
1833 | memcpy(QETH_CM_SETUP_DEST_ADDR(iob->data), | |
1834 | &card->token.issuer_rm_r, QETH_MPC_TOKEN_LENGTH); | |
1835 | memcpy(QETH_CM_SETUP_CONNECTION_TOKEN(iob->data), | |
1836 | &card->token.cm_connection_w, QETH_MPC_TOKEN_LENGTH); | |
1837 | memcpy(QETH_CM_SETUP_FILTER_TOKEN(iob->data), | |
1838 | &card->token.cm_filter_r, QETH_MPC_TOKEN_LENGTH); | |
1839 | rc = qeth_send_control_data(card, CM_SETUP_SIZE, iob, | |
1840 | qeth_cm_setup_cb, NULL); | |
1841 | return rc; | |
1842 | ||
1843 | } | |
1844 | ||
1845 | static inline int qeth_get_initial_mtu_for_card(struct qeth_card *card) | |
1846 | { | |
1847 | switch (card->info.type) { | |
1848 | case QETH_CARD_TYPE_UNKNOWN: | |
1849 | return 1500; | |
1850 | case QETH_CARD_TYPE_IQD: | |
1851 | return card->info.max_mtu; | |
1852 | case QETH_CARD_TYPE_OSAE: | |
1853 | switch (card->info.link_type) { | |
1854 | case QETH_LINK_TYPE_HSTR: | |
1855 | case QETH_LINK_TYPE_LANE_TR: | |
1856 | return 2000; | |
1857 | default: | |
1858 | return 1492; | |
1859 | } | |
1860 | default: | |
1861 | return 1500; | |
1862 | } | |
1863 | } | |
1864 | ||
1865 | static inline int qeth_get_max_mtu_for_card(int cardtype) | |
1866 | { | |
1867 | switch (cardtype) { | |
1868 | ||
1869 | case QETH_CARD_TYPE_UNKNOWN: | |
1870 | case QETH_CARD_TYPE_OSAE: | |
1871 | case QETH_CARD_TYPE_OSN: | |
1872 | return 61440; | |
1873 | case QETH_CARD_TYPE_IQD: | |
1874 | return 57344; | |
1875 | default: | |
1876 | return 1500; | |
1877 | } | |
1878 | } | |
1879 | ||
1880 | static inline int qeth_get_mtu_out_of_mpc(int cardtype) | |
1881 | { | |
1882 | switch (cardtype) { | |
1883 | case QETH_CARD_TYPE_IQD: | |
1884 | return 1; | |
1885 | default: | |
1886 | return 0; | |
1887 | } | |
1888 | } | |
1889 | ||
1890 | static inline int qeth_get_mtu_outof_framesize(int framesize) | |
1891 | { | |
1892 | switch (framesize) { | |
1893 | case 0x4000: | |
1894 | return 8192; | |
1895 | case 0x6000: | |
1896 | return 16384; | |
1897 | case 0xa000: | |
1898 | return 32768; | |
1899 | case 0xffff: | |
1900 | return 57344; | |
1901 | default: | |
1902 | return 0; | |
1903 | } | |
1904 | } | |
1905 | ||
1906 | static inline int qeth_mtu_is_valid(struct qeth_card *card, int mtu) | |
1907 | { | |
1908 | switch (card->info.type) { | |
1909 | case QETH_CARD_TYPE_OSAE: | |
1910 | return ((mtu >= 576) && (mtu <= 61440)); | |
1911 | case QETH_CARD_TYPE_IQD: | |
1912 | return ((mtu >= 576) && | |
1913 | (mtu <= card->info.max_mtu + 4096 - 32)); | |
1914 | case QETH_CARD_TYPE_OSN: | |
1915 | case QETH_CARD_TYPE_UNKNOWN: | |
1916 | default: | |
1917 | return 1; | |
1918 | } | |
1919 | } | |
1920 | ||
1921 | static int qeth_ulp_enable_cb(struct qeth_card *card, struct qeth_reply *reply, | |
1922 | unsigned long data) | |
1923 | { | |
1924 | ||
1925 | __u16 mtu, framesize; | |
1926 | __u16 len; | |
1927 | __u8 link_type; | |
1928 | struct qeth_cmd_buffer *iob; | |
1929 | ||
d11ba0c4 | 1930 | QETH_DBF_TEXT(SETUP, 2, "ulpenacb"); |
4a71df50 FB |
1931 | |
1932 | iob = (struct qeth_cmd_buffer *) data; | |
1933 | memcpy(&card->token.ulp_filter_r, | |
1934 | QETH_ULP_ENABLE_RESP_FILTER_TOKEN(iob->data), | |
1935 | QETH_MPC_TOKEN_LENGTH); | |
1936 | if (qeth_get_mtu_out_of_mpc(card->info.type)) { | |
1937 | memcpy(&framesize, QETH_ULP_ENABLE_RESP_MAX_MTU(iob->data), 2); | |
1938 | mtu = qeth_get_mtu_outof_framesize(framesize); | |
1939 | if (!mtu) { | |
1940 | iob->rc = -EINVAL; | |
d11ba0c4 | 1941 | QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); |
4a71df50 FB |
1942 | return 0; |
1943 | } | |
1944 | card->info.max_mtu = mtu; | |
1945 | card->info.initial_mtu = mtu; | |
1946 | card->qdio.in_buf_size = mtu + 2 * PAGE_SIZE; | |
1947 | } else { | |
1948 | card->info.initial_mtu = qeth_get_initial_mtu_for_card(card); | |
1949 | card->info.max_mtu = qeth_get_max_mtu_for_card(card->info.type); | |
1950 | card->qdio.in_buf_size = QETH_IN_BUF_SIZE_DEFAULT; | |
1951 | } | |
1952 | ||
1953 | memcpy(&len, QETH_ULP_ENABLE_RESP_DIFINFO_LEN(iob->data), 2); | |
1954 | if (len >= QETH_MPC_DIFINFO_LEN_INDICATES_LINK_TYPE) { | |
1955 | memcpy(&link_type, | |
1956 | QETH_ULP_ENABLE_RESP_LINK_TYPE(iob->data), 1); | |
1957 | card->info.link_type = link_type; | |
1958 | } else | |
1959 | card->info.link_type = 0; | |
d11ba0c4 | 1960 | QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); |
4a71df50 FB |
1961 | return 0; |
1962 | } | |
1963 | ||
1964 | static int qeth_ulp_enable(struct qeth_card *card) | |
1965 | { | |
1966 | int rc; | |
1967 | char prot_type; | |
1968 | struct qeth_cmd_buffer *iob; | |
1969 | ||
1970 | /*FIXME: trace view callbacks*/ | |
d11ba0c4 | 1971 | QETH_DBF_TEXT(SETUP, 2, "ulpenabl"); |
4a71df50 FB |
1972 | |
1973 | iob = qeth_wait_for_buffer(&card->write); | |
1974 | memcpy(iob->data, ULP_ENABLE, ULP_ENABLE_SIZE); | |
1975 | ||
1976 | *(QETH_ULP_ENABLE_LINKNUM(iob->data)) = | |
1977 | (__u8) card->info.portno; | |
1978 | if (card->options.layer2) | |
1979 | if (card->info.type == QETH_CARD_TYPE_OSN) | |
1980 | prot_type = QETH_PROT_OSN2; | |
1981 | else | |
1982 | prot_type = QETH_PROT_LAYER2; | |
1983 | else | |
1984 | prot_type = QETH_PROT_TCPIP; | |
1985 | ||
1986 | memcpy(QETH_ULP_ENABLE_PROT_TYPE(iob->data), &prot_type, 1); | |
1987 | memcpy(QETH_ULP_ENABLE_DEST_ADDR(iob->data), | |
1988 | &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); | |
1989 | memcpy(QETH_ULP_ENABLE_FILTER_TOKEN(iob->data), | |
1990 | &card->token.ulp_filter_w, QETH_MPC_TOKEN_LENGTH); | |
1991 | memcpy(QETH_ULP_ENABLE_PORTNAME_AND_LL(iob->data), | |
1992 | card->info.portname, 9); | |
1993 | rc = qeth_send_control_data(card, ULP_ENABLE_SIZE, iob, | |
1994 | qeth_ulp_enable_cb, NULL); | |
1995 | return rc; | |
1996 | ||
1997 | } | |
1998 | ||
1999 | static int qeth_ulp_setup_cb(struct qeth_card *card, struct qeth_reply *reply, | |
2000 | unsigned long data) | |
2001 | { | |
2002 | struct qeth_cmd_buffer *iob; | |
2003 | ||
d11ba0c4 | 2004 | QETH_DBF_TEXT(SETUP, 2, "ulpstpcb"); |
4a71df50 FB |
2005 | |
2006 | iob = (struct qeth_cmd_buffer *) data; | |
2007 | memcpy(&card->token.ulp_connection_r, | |
2008 | QETH_ULP_SETUP_RESP_CONNECTION_TOKEN(iob->data), | |
2009 | QETH_MPC_TOKEN_LENGTH); | |
d11ba0c4 | 2010 | QETH_DBF_TEXT_(SETUP, 2, " rc%d", iob->rc); |
4a71df50 FB |
2011 | return 0; |
2012 | } | |
2013 | ||
2014 | static int qeth_ulp_setup(struct qeth_card *card) | |
2015 | { | |
2016 | int rc; | |
2017 | __u16 temp; | |
2018 | struct qeth_cmd_buffer *iob; | |
2019 | struct ccw_dev_id dev_id; | |
2020 | ||
d11ba0c4 | 2021 | QETH_DBF_TEXT(SETUP, 2, "ulpsetup"); |
4a71df50 FB |
2022 | |
2023 | iob = qeth_wait_for_buffer(&card->write); | |
2024 | memcpy(iob->data, ULP_SETUP, ULP_SETUP_SIZE); | |
2025 | ||
2026 | memcpy(QETH_ULP_SETUP_DEST_ADDR(iob->data), | |
2027 | &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); | |
2028 | memcpy(QETH_ULP_SETUP_CONNECTION_TOKEN(iob->data), | |
2029 | &card->token.ulp_connection_w, QETH_MPC_TOKEN_LENGTH); | |
2030 | memcpy(QETH_ULP_SETUP_FILTER_TOKEN(iob->data), | |
2031 | &card->token.ulp_filter_r, QETH_MPC_TOKEN_LENGTH); | |
2032 | ||
2033 | ccw_device_get_id(CARD_DDEV(card), &dev_id); | |
2034 | memcpy(QETH_ULP_SETUP_CUA(iob->data), &dev_id.devno, 2); | |
2035 | temp = (card->info.cula << 8) + card->info.unit_addr2; | |
2036 | memcpy(QETH_ULP_SETUP_REAL_DEVADDR(iob->data), &temp, 2); | |
2037 | rc = qeth_send_control_data(card, ULP_SETUP_SIZE, iob, | |
2038 | qeth_ulp_setup_cb, NULL); | |
2039 | return rc; | |
2040 | } | |
2041 | ||
2042 | static int qeth_alloc_qdio_buffers(struct qeth_card *card) | |
2043 | { | |
2044 | int i, j; | |
2045 | ||
d11ba0c4 | 2046 | QETH_DBF_TEXT(SETUP, 2, "allcqdbf"); |
4a71df50 FB |
2047 | |
2048 | if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_UNINITIALIZED, | |
2049 | QETH_QDIO_ALLOCATED) != QETH_QDIO_UNINITIALIZED) | |
2050 | return 0; | |
2051 | ||
2052 | card->qdio.in_q = kmalloc(sizeof(struct qeth_qdio_q), | |
508b3c4f | 2053 | GFP_KERNEL); |
4a71df50 FB |
2054 | if (!card->qdio.in_q) |
2055 | goto out_nomem; | |
d11ba0c4 PT |
2056 | QETH_DBF_TEXT(SETUP, 2, "inq"); |
2057 | QETH_DBF_HEX(SETUP, 2, &card->qdio.in_q, sizeof(void *)); | |
4a71df50 FB |
2058 | memset(card->qdio.in_q, 0, sizeof(struct qeth_qdio_q)); |
2059 | /* give inbound qeth_qdio_buffers their qdio_buffers */ | |
2060 | for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) | |
2061 | card->qdio.in_q->bufs[i].buffer = | |
2062 | &card->qdio.in_q->qdio_bufs[i]; | |
2063 | /* inbound buffer pool */ | |
2064 | if (qeth_alloc_buffer_pool(card)) | |
2065 | goto out_freeinq; | |
2066 | /* outbound */ | |
2067 | card->qdio.out_qs = | |
2068 | kmalloc(card->qdio.no_out_queues * | |
2069 | sizeof(struct qeth_qdio_out_q *), GFP_KERNEL); | |
2070 | if (!card->qdio.out_qs) | |
2071 | goto out_freepool; | |
2072 | for (i = 0; i < card->qdio.no_out_queues; ++i) { | |
2073 | card->qdio.out_qs[i] = kmalloc(sizeof(struct qeth_qdio_out_q), | |
508b3c4f | 2074 | GFP_KERNEL); |
4a71df50 FB |
2075 | if (!card->qdio.out_qs[i]) |
2076 | goto out_freeoutq; | |
d11ba0c4 PT |
2077 | QETH_DBF_TEXT_(SETUP, 2, "outq %i", i); |
2078 | QETH_DBF_HEX(SETUP, 2, &card->qdio.out_qs[i], sizeof(void *)); | |
4a71df50 FB |
2079 | memset(card->qdio.out_qs[i], 0, sizeof(struct qeth_qdio_out_q)); |
2080 | card->qdio.out_qs[i]->queue_no = i; | |
2081 | /* give outbound qeth_qdio_buffers their qdio_buffers */ | |
2082 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { | |
2083 | card->qdio.out_qs[i]->bufs[j].buffer = | |
2084 | &card->qdio.out_qs[i]->qdio_bufs[j]; | |
2085 | skb_queue_head_init(&card->qdio.out_qs[i]->bufs[j]. | |
2086 | skb_list); | |
2087 | lockdep_set_class( | |
2088 | &card->qdio.out_qs[i]->bufs[j].skb_list.lock, | |
2089 | &qdio_out_skb_queue_key); | |
2090 | INIT_LIST_HEAD(&card->qdio.out_qs[i]->bufs[j].ctx_list); | |
2091 | } | |
2092 | } | |
2093 | return 0; | |
2094 | ||
2095 | out_freeoutq: | |
2096 | while (i > 0) | |
2097 | kfree(card->qdio.out_qs[--i]); | |
2098 | kfree(card->qdio.out_qs); | |
2099 | card->qdio.out_qs = NULL; | |
2100 | out_freepool: | |
2101 | qeth_free_buffer_pool(card); | |
2102 | out_freeinq: | |
2103 | kfree(card->qdio.in_q); | |
2104 | card->qdio.in_q = NULL; | |
2105 | out_nomem: | |
2106 | atomic_set(&card->qdio.state, QETH_QDIO_UNINITIALIZED); | |
2107 | return -ENOMEM; | |
2108 | } | |
2109 | ||
2110 | static void qeth_create_qib_param_field(struct qeth_card *card, | |
2111 | char *param_field) | |
2112 | { | |
2113 | ||
2114 | param_field[0] = _ascebc['P']; | |
2115 | param_field[1] = _ascebc['C']; | |
2116 | param_field[2] = _ascebc['I']; | |
2117 | param_field[3] = _ascebc['T']; | |
2118 | *((unsigned int *) (¶m_field[4])) = QETH_PCI_THRESHOLD_A(card); | |
2119 | *((unsigned int *) (¶m_field[8])) = QETH_PCI_THRESHOLD_B(card); | |
2120 | *((unsigned int *) (¶m_field[12])) = QETH_PCI_TIMER_VALUE(card); | |
2121 | } | |
2122 | ||
2123 | static void qeth_create_qib_param_field_blkt(struct qeth_card *card, | |
2124 | char *param_field) | |
2125 | { | |
2126 | param_field[16] = _ascebc['B']; | |
2127 | param_field[17] = _ascebc['L']; | |
2128 | param_field[18] = _ascebc['K']; | |
2129 | param_field[19] = _ascebc['T']; | |
2130 | *((unsigned int *) (¶m_field[20])) = card->info.blkt.time_total; | |
2131 | *((unsigned int *) (¶m_field[24])) = card->info.blkt.inter_packet; | |
2132 | *((unsigned int *) (¶m_field[28])) = | |
2133 | card->info.blkt.inter_packet_jumbo; | |
2134 | } | |
2135 | ||
2136 | static int qeth_qdio_activate(struct qeth_card *card) | |
2137 | { | |
d11ba0c4 | 2138 | QETH_DBF_TEXT(SETUP, 3, "qdioact"); |
779e6e1c | 2139 | return qdio_activate(CARD_DDEV(card)); |
4a71df50 FB |
2140 | } |
2141 | ||
2142 | static int qeth_dm_act(struct qeth_card *card) | |
2143 | { | |
2144 | int rc; | |
2145 | struct qeth_cmd_buffer *iob; | |
2146 | ||
d11ba0c4 | 2147 | QETH_DBF_TEXT(SETUP, 2, "dmact"); |
4a71df50 FB |
2148 | |
2149 | iob = qeth_wait_for_buffer(&card->write); | |
2150 | memcpy(iob->data, DM_ACT, DM_ACT_SIZE); | |
2151 | ||
2152 | memcpy(QETH_DM_ACT_DEST_ADDR(iob->data), | |
2153 | &card->token.cm_connection_r, QETH_MPC_TOKEN_LENGTH); | |
2154 | memcpy(QETH_DM_ACT_CONNECTION_TOKEN(iob->data), | |
2155 | &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); | |
2156 | rc = qeth_send_control_data(card, DM_ACT_SIZE, iob, NULL, NULL); | |
2157 | return rc; | |
2158 | } | |
2159 | ||
2160 | static int qeth_mpc_initialize(struct qeth_card *card) | |
2161 | { | |
2162 | int rc; | |
2163 | ||
d11ba0c4 | 2164 | QETH_DBF_TEXT(SETUP, 2, "mpcinit"); |
4a71df50 FB |
2165 | |
2166 | rc = qeth_issue_next_read(card); | |
2167 | if (rc) { | |
d11ba0c4 | 2168 | QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); |
4a71df50 FB |
2169 | return rc; |
2170 | } | |
2171 | rc = qeth_cm_enable(card); | |
2172 | if (rc) { | |
d11ba0c4 | 2173 | QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); |
4a71df50 FB |
2174 | goto out_qdio; |
2175 | } | |
2176 | rc = qeth_cm_setup(card); | |
2177 | if (rc) { | |
d11ba0c4 | 2178 | QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); |
4a71df50 FB |
2179 | goto out_qdio; |
2180 | } | |
2181 | rc = qeth_ulp_enable(card); | |
2182 | if (rc) { | |
d11ba0c4 | 2183 | QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); |
4a71df50 FB |
2184 | goto out_qdio; |
2185 | } | |
2186 | rc = qeth_ulp_setup(card); | |
2187 | if (rc) { | |
d11ba0c4 | 2188 | QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); |
4a71df50 FB |
2189 | goto out_qdio; |
2190 | } | |
2191 | rc = qeth_alloc_qdio_buffers(card); | |
2192 | if (rc) { | |
d11ba0c4 | 2193 | QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); |
4a71df50 FB |
2194 | goto out_qdio; |
2195 | } | |
2196 | rc = qeth_qdio_establish(card); | |
2197 | if (rc) { | |
d11ba0c4 | 2198 | QETH_DBF_TEXT_(SETUP, 2, "6err%d", rc); |
4a71df50 FB |
2199 | qeth_free_qdio_buffers(card); |
2200 | goto out_qdio; | |
2201 | } | |
2202 | rc = qeth_qdio_activate(card); | |
2203 | if (rc) { | |
d11ba0c4 | 2204 | QETH_DBF_TEXT_(SETUP, 2, "7err%d", rc); |
4a71df50 FB |
2205 | goto out_qdio; |
2206 | } | |
2207 | rc = qeth_dm_act(card); | |
2208 | if (rc) { | |
d11ba0c4 | 2209 | QETH_DBF_TEXT_(SETUP, 2, "8err%d", rc); |
4a71df50 FB |
2210 | goto out_qdio; |
2211 | } | |
2212 | ||
2213 | return 0; | |
2214 | out_qdio: | |
2215 | qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); | |
2216 | return rc; | |
2217 | } | |
2218 | ||
2219 | static void qeth_print_status_with_portname(struct qeth_card *card) | |
2220 | { | |
2221 | char dbf_text[15]; | |
2222 | int i; | |
2223 | ||
2224 | sprintf(dbf_text, "%s", card->info.portname + 1); | |
2225 | for (i = 0; i < 8; i++) | |
2226 | dbf_text[i] = | |
2227 | (char) _ebcasc[(__u8) dbf_text[i]]; | |
2228 | dbf_text[8] = 0; | |
74eacdb9 | 2229 | dev_info(&card->gdev->dev, "Device is a%s card%s%s%s\n" |
4a71df50 | 2230 | "with link type %s (portname: %s)\n", |
4a71df50 FB |
2231 | qeth_get_cardname(card), |
2232 | (card->info.mcl_level[0]) ? " (level: " : "", | |
2233 | (card->info.mcl_level[0]) ? card->info.mcl_level : "", | |
2234 | (card->info.mcl_level[0]) ? ")" : "", | |
2235 | qeth_get_cardname_short(card), | |
2236 | dbf_text); | |
2237 | ||
2238 | } | |
2239 | ||
2240 | static void qeth_print_status_no_portname(struct qeth_card *card) | |
2241 | { | |
2242 | if (card->info.portname[0]) | |
74eacdb9 | 2243 | dev_info(&card->gdev->dev, "Device is a%s " |
4a71df50 FB |
2244 | "card%s%s%s\nwith link type %s " |
2245 | "(no portname needed by interface).\n", | |
4a71df50 FB |
2246 | qeth_get_cardname(card), |
2247 | (card->info.mcl_level[0]) ? " (level: " : "", | |
2248 | (card->info.mcl_level[0]) ? card->info.mcl_level : "", | |
2249 | (card->info.mcl_level[0]) ? ")" : "", | |
2250 | qeth_get_cardname_short(card)); | |
2251 | else | |
74eacdb9 | 2252 | dev_info(&card->gdev->dev, "Device is a%s " |
4a71df50 | 2253 | "card%s%s%s\nwith link type %s.\n", |
4a71df50 FB |
2254 | qeth_get_cardname(card), |
2255 | (card->info.mcl_level[0]) ? " (level: " : "", | |
2256 | (card->info.mcl_level[0]) ? card->info.mcl_level : "", | |
2257 | (card->info.mcl_level[0]) ? ")" : "", | |
2258 | qeth_get_cardname_short(card)); | |
2259 | } | |
2260 | ||
2261 | void qeth_print_status_message(struct qeth_card *card) | |
2262 | { | |
2263 | switch (card->info.type) { | |
2264 | case QETH_CARD_TYPE_OSAE: | |
2265 | /* VM will use a non-zero first character | |
2266 | * to indicate a HiperSockets like reporting | |
2267 | * of the level OSA sets the first character to zero | |
2268 | * */ | |
2269 | if (!card->info.mcl_level[0]) { | |
2270 | sprintf(card->info.mcl_level, "%02x%02x", | |
2271 | card->info.mcl_level[2], | |
2272 | card->info.mcl_level[3]); | |
2273 | ||
2274 | card->info.mcl_level[QETH_MCL_LENGTH] = 0; | |
2275 | break; | |
2276 | } | |
2277 | /* fallthrough */ | |
2278 | case QETH_CARD_TYPE_IQD: | |
906f1f07 KDW |
2279 | if ((card->info.guestlan) || |
2280 | (card->info.mcl_level[0] & 0x80)) { | |
4a71df50 FB |
2281 | card->info.mcl_level[0] = (char) _ebcasc[(__u8) |
2282 | card->info.mcl_level[0]]; | |
2283 | card->info.mcl_level[1] = (char) _ebcasc[(__u8) | |
2284 | card->info.mcl_level[1]]; | |
2285 | card->info.mcl_level[2] = (char) _ebcasc[(__u8) | |
2286 | card->info.mcl_level[2]]; | |
2287 | card->info.mcl_level[3] = (char) _ebcasc[(__u8) | |
2288 | card->info.mcl_level[3]]; | |
2289 | card->info.mcl_level[QETH_MCL_LENGTH] = 0; | |
2290 | } | |
2291 | break; | |
2292 | default: | |
2293 | memset(&card->info.mcl_level[0], 0, QETH_MCL_LENGTH + 1); | |
2294 | } | |
2295 | if (card->info.portname_required) | |
2296 | qeth_print_status_with_portname(card); | |
2297 | else | |
2298 | qeth_print_status_no_portname(card); | |
2299 | } | |
2300 | EXPORT_SYMBOL_GPL(qeth_print_status_message); | |
2301 | ||
4a71df50 FB |
2302 | static void qeth_initialize_working_pool_list(struct qeth_card *card) |
2303 | { | |
2304 | struct qeth_buffer_pool_entry *entry; | |
2305 | ||
d11ba0c4 | 2306 | QETH_DBF_TEXT(TRACE, 5, "inwrklst"); |
4a71df50 FB |
2307 | |
2308 | list_for_each_entry(entry, | |
2309 | &card->qdio.init_pool.entry_list, init_list) { | |
2310 | qeth_put_buffer_pool_entry(card, entry); | |
2311 | } | |
2312 | } | |
2313 | ||
2314 | static inline struct qeth_buffer_pool_entry *qeth_find_free_buffer_pool_entry( | |
2315 | struct qeth_card *card) | |
2316 | { | |
2317 | struct list_head *plh; | |
2318 | struct qeth_buffer_pool_entry *entry; | |
2319 | int i, free; | |
2320 | struct page *page; | |
2321 | ||
2322 | if (list_empty(&card->qdio.in_buf_pool.entry_list)) | |
2323 | return NULL; | |
2324 | ||
2325 | list_for_each(plh, &card->qdio.in_buf_pool.entry_list) { | |
2326 | entry = list_entry(plh, struct qeth_buffer_pool_entry, list); | |
2327 | free = 1; | |
2328 | for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { | |
2329 | if (page_count(virt_to_page(entry->elements[i])) > 1) { | |
2330 | free = 0; | |
2331 | break; | |
2332 | } | |
2333 | } | |
2334 | if (free) { | |
2335 | list_del_init(&entry->list); | |
2336 | return entry; | |
2337 | } | |
2338 | } | |
2339 | ||
2340 | /* no free buffer in pool so take first one and swap pages */ | |
2341 | entry = list_entry(card->qdio.in_buf_pool.entry_list.next, | |
2342 | struct qeth_buffer_pool_entry, list); | |
2343 | for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { | |
2344 | if (page_count(virt_to_page(entry->elements[i])) > 1) { | |
508b3c4f | 2345 | page = alloc_page(GFP_ATOMIC); |
4a71df50 FB |
2346 | if (!page) { |
2347 | return NULL; | |
2348 | } else { | |
2349 | free_page((unsigned long)entry->elements[i]); | |
2350 | entry->elements[i] = page_address(page); | |
2351 | if (card->options.performance_stats) | |
2352 | card->perf_stats.sg_alloc_page_rx++; | |
2353 | } | |
2354 | } | |
2355 | } | |
2356 | list_del_init(&entry->list); | |
2357 | return entry; | |
2358 | } | |
2359 | ||
2360 | static int qeth_init_input_buffer(struct qeth_card *card, | |
2361 | struct qeth_qdio_buffer *buf) | |
2362 | { | |
2363 | struct qeth_buffer_pool_entry *pool_entry; | |
2364 | int i; | |
2365 | ||
2366 | pool_entry = qeth_find_free_buffer_pool_entry(card); | |
2367 | if (!pool_entry) | |
2368 | return 1; | |
2369 | ||
2370 | /* | |
2371 | * since the buffer is accessed only from the input_tasklet | |
2372 | * there shouldn't be a need to synchronize; also, since we use | |
2373 | * the QETH_IN_BUF_REQUEUE_THRESHOLD we should never run out off | |
2374 | * buffers | |
2375 | */ | |
4a71df50 FB |
2376 | |
2377 | buf->pool_entry = pool_entry; | |
2378 | for (i = 0; i < QETH_MAX_BUFFER_ELEMENTS(card); ++i) { | |
2379 | buf->buffer->element[i].length = PAGE_SIZE; | |
2380 | buf->buffer->element[i].addr = pool_entry->elements[i]; | |
2381 | if (i == QETH_MAX_BUFFER_ELEMENTS(card) - 1) | |
2382 | buf->buffer->element[i].flags = SBAL_FLAGS_LAST_ENTRY; | |
2383 | else | |
2384 | buf->buffer->element[i].flags = 0; | |
2385 | } | |
2386 | return 0; | |
2387 | } | |
2388 | ||
2389 | int qeth_init_qdio_queues(struct qeth_card *card) | |
2390 | { | |
2391 | int i, j; | |
2392 | int rc; | |
2393 | ||
d11ba0c4 | 2394 | QETH_DBF_TEXT(SETUP, 2, "initqdqs"); |
4a71df50 FB |
2395 | |
2396 | /* inbound queue */ | |
2397 | memset(card->qdio.in_q->qdio_bufs, 0, | |
2398 | QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer)); | |
2399 | qeth_initialize_working_pool_list(card); | |
2400 | /*give only as many buffers to hardware as we have buffer pool entries*/ | |
2401 | for (i = 0; i < card->qdio.in_buf_pool.buf_count - 1; ++i) | |
2402 | qeth_init_input_buffer(card, &card->qdio.in_q->bufs[i]); | |
2403 | card->qdio.in_q->next_buf_to_init = | |
2404 | card->qdio.in_buf_pool.buf_count - 1; | |
2405 | rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, 0, | |
779e6e1c | 2406 | card->qdio.in_buf_pool.buf_count - 1); |
4a71df50 | 2407 | if (rc) { |
d11ba0c4 | 2408 | QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); |
4a71df50 FB |
2409 | return rc; |
2410 | } | |
4a71df50 FB |
2411 | /* outbound queue */ |
2412 | for (i = 0; i < card->qdio.no_out_queues; ++i) { | |
2413 | memset(card->qdio.out_qs[i]->qdio_bufs, 0, | |
2414 | QDIO_MAX_BUFFERS_PER_Q * sizeof(struct qdio_buffer)); | |
2415 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j) { | |
2416 | qeth_clear_output_buffer(card->qdio.out_qs[i], | |
2417 | &card->qdio.out_qs[i]->bufs[j]); | |
2418 | } | |
2419 | card->qdio.out_qs[i]->card = card; | |
2420 | card->qdio.out_qs[i]->next_buf_to_fill = 0; | |
2421 | card->qdio.out_qs[i]->do_pack = 0; | |
2422 | atomic_set(&card->qdio.out_qs[i]->used_buffers, 0); | |
2423 | atomic_set(&card->qdio.out_qs[i]->set_pci_flags_count, 0); | |
2424 | atomic_set(&card->qdio.out_qs[i]->state, | |
2425 | QETH_OUT_Q_UNLOCKED); | |
2426 | } | |
2427 | return 0; | |
2428 | } | |
2429 | EXPORT_SYMBOL_GPL(qeth_init_qdio_queues); | |
2430 | ||
2431 | static inline __u8 qeth_get_ipa_adp_type(enum qeth_link_types link_type) | |
2432 | { | |
2433 | switch (link_type) { | |
2434 | case QETH_LINK_TYPE_HSTR: | |
2435 | return 2; | |
2436 | default: | |
2437 | return 1; | |
2438 | } | |
2439 | } | |
2440 | ||
2441 | static void qeth_fill_ipacmd_header(struct qeth_card *card, | |
2442 | struct qeth_ipa_cmd *cmd, __u8 command, | |
2443 | enum qeth_prot_versions prot) | |
2444 | { | |
2445 | memset(cmd, 0, sizeof(struct qeth_ipa_cmd)); | |
2446 | cmd->hdr.command = command; | |
2447 | cmd->hdr.initiator = IPA_CMD_INITIATOR_HOST; | |
2448 | cmd->hdr.seqno = card->seqno.ipa; | |
2449 | cmd->hdr.adapter_type = qeth_get_ipa_adp_type(card->info.link_type); | |
2450 | cmd->hdr.rel_adapter_no = (__u8) card->info.portno; | |
2451 | if (card->options.layer2) | |
2452 | cmd->hdr.prim_version_no = 2; | |
2453 | else | |
2454 | cmd->hdr.prim_version_no = 1; | |
2455 | cmd->hdr.param_count = 1; | |
2456 | cmd->hdr.prot_version = prot; | |
2457 | cmd->hdr.ipa_supported = 0; | |
2458 | cmd->hdr.ipa_enabled = 0; | |
2459 | } | |
2460 | ||
2461 | struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *card, | |
2462 | enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) | |
2463 | { | |
2464 | struct qeth_cmd_buffer *iob; | |
2465 | struct qeth_ipa_cmd *cmd; | |
2466 | ||
2467 | iob = qeth_wait_for_buffer(&card->write); | |
2468 | cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); | |
2469 | qeth_fill_ipacmd_header(card, cmd, ipacmd, prot); | |
2470 | ||
2471 | return iob; | |
2472 | } | |
2473 | EXPORT_SYMBOL_GPL(qeth_get_ipacmd_buffer); | |
2474 | ||
2475 | void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, | |
2476 | char prot_type) | |
2477 | { | |
2478 | memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); | |
2479 | memcpy(QETH_IPA_CMD_PROT_TYPE(iob->data), &prot_type, 1); | |
2480 | memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), | |
2481 | &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); | |
2482 | } | |
2483 | EXPORT_SYMBOL_GPL(qeth_prepare_ipa_cmd); | |
2484 | ||
2485 | int qeth_send_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob, | |
2486 | int (*reply_cb)(struct qeth_card *, struct qeth_reply*, | |
2487 | unsigned long), | |
2488 | void *reply_param) | |
2489 | { | |
2490 | int rc; | |
2491 | char prot_type; | |
4a71df50 | 2492 | |
d11ba0c4 | 2493 | QETH_DBF_TEXT(TRACE, 4, "sendipa"); |
4a71df50 FB |
2494 | |
2495 | if (card->options.layer2) | |
2496 | if (card->info.type == QETH_CARD_TYPE_OSN) | |
2497 | prot_type = QETH_PROT_OSN2; | |
2498 | else | |
2499 | prot_type = QETH_PROT_LAYER2; | |
2500 | else | |
2501 | prot_type = QETH_PROT_TCPIP; | |
2502 | qeth_prepare_ipa_cmd(card, iob, prot_type); | |
d11ba0c4 PT |
2503 | rc = qeth_send_control_data(card, IPA_CMD_LENGTH, |
2504 | iob, reply_cb, reply_param); | |
4a71df50 FB |
2505 | return rc; |
2506 | } | |
2507 | EXPORT_SYMBOL_GPL(qeth_send_ipa_cmd); | |
2508 | ||
2509 | static int qeth_send_startstoplan(struct qeth_card *card, | |
2510 | enum qeth_ipa_cmds ipacmd, enum qeth_prot_versions prot) | |
2511 | { | |
2512 | int rc; | |
2513 | struct qeth_cmd_buffer *iob; | |
2514 | ||
2515 | iob = qeth_get_ipacmd_buffer(card, ipacmd, prot); | |
2516 | rc = qeth_send_ipa_cmd(card, iob, NULL, NULL); | |
2517 | ||
2518 | return rc; | |
2519 | } | |
2520 | ||
2521 | int qeth_send_startlan(struct qeth_card *card) | |
2522 | { | |
2523 | int rc; | |
2524 | ||
d11ba0c4 | 2525 | QETH_DBF_TEXT(SETUP, 2, "strtlan"); |
4a71df50 FB |
2526 | |
2527 | rc = qeth_send_startstoplan(card, IPA_CMD_STARTLAN, 0); | |
2528 | return rc; | |
2529 | } | |
2530 | EXPORT_SYMBOL_GPL(qeth_send_startlan); | |
2531 | ||
2532 | int qeth_send_stoplan(struct qeth_card *card) | |
2533 | { | |
2534 | int rc = 0; | |
2535 | ||
2536 | /* | |
2537 | * TODO: according to the IPA format document page 14, | |
2538 | * TCP/IP (we!) never issue a STOPLAN | |
2539 | * is this right ?!? | |
2540 | */ | |
d11ba0c4 | 2541 | QETH_DBF_TEXT(SETUP, 2, "stoplan"); |
4a71df50 FB |
2542 | |
2543 | rc = qeth_send_startstoplan(card, IPA_CMD_STOPLAN, 0); | |
2544 | return rc; | |
2545 | } | |
2546 | EXPORT_SYMBOL_GPL(qeth_send_stoplan); | |
2547 | ||
2548 | int qeth_default_setadapterparms_cb(struct qeth_card *card, | |
2549 | struct qeth_reply *reply, unsigned long data) | |
2550 | { | |
2551 | struct qeth_ipa_cmd *cmd; | |
2552 | ||
d11ba0c4 | 2553 | QETH_DBF_TEXT(TRACE, 4, "defadpcb"); |
4a71df50 FB |
2554 | |
2555 | cmd = (struct qeth_ipa_cmd *) data; | |
2556 | if (cmd->hdr.return_code == 0) | |
2557 | cmd->hdr.return_code = | |
2558 | cmd->data.setadapterparms.hdr.return_code; | |
2559 | return 0; | |
2560 | } | |
2561 | EXPORT_SYMBOL_GPL(qeth_default_setadapterparms_cb); | |
2562 | ||
2563 | static int qeth_query_setadapterparms_cb(struct qeth_card *card, | |
2564 | struct qeth_reply *reply, unsigned long data) | |
2565 | { | |
2566 | struct qeth_ipa_cmd *cmd; | |
2567 | ||
d11ba0c4 | 2568 | QETH_DBF_TEXT(TRACE, 3, "quyadpcb"); |
4a71df50 FB |
2569 | |
2570 | cmd = (struct qeth_ipa_cmd *) data; | |
2571 | if (cmd->data.setadapterparms.data.query_cmds_supp.lan_type & 0x7f) | |
2572 | card->info.link_type = | |
2573 | cmd->data.setadapterparms.data.query_cmds_supp.lan_type; | |
2574 | card->options.adp.supported_funcs = | |
2575 | cmd->data.setadapterparms.data.query_cmds_supp.supported_cmds; | |
2576 | return qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); | |
2577 | } | |
2578 | ||
2579 | struct qeth_cmd_buffer *qeth_get_adapter_cmd(struct qeth_card *card, | |
2580 | __u32 command, __u32 cmdlen) | |
2581 | { | |
2582 | struct qeth_cmd_buffer *iob; | |
2583 | struct qeth_ipa_cmd *cmd; | |
2584 | ||
2585 | iob = qeth_get_ipacmd_buffer(card, IPA_CMD_SETADAPTERPARMS, | |
2586 | QETH_PROT_IPV4); | |
2587 | cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); | |
2588 | cmd->data.setadapterparms.hdr.cmdlength = cmdlen; | |
2589 | cmd->data.setadapterparms.hdr.command_code = command; | |
2590 | cmd->data.setadapterparms.hdr.used_total = 1; | |
2591 | cmd->data.setadapterparms.hdr.seq_no = 1; | |
2592 | ||
2593 | return iob; | |
2594 | } | |
2595 | EXPORT_SYMBOL_GPL(qeth_get_adapter_cmd); | |
2596 | ||
2597 | int qeth_query_setadapterparms(struct qeth_card *card) | |
2598 | { | |
2599 | int rc; | |
2600 | struct qeth_cmd_buffer *iob; | |
2601 | ||
d11ba0c4 | 2602 | QETH_DBF_TEXT(TRACE, 3, "queryadp"); |
4a71df50 FB |
2603 | iob = qeth_get_adapter_cmd(card, IPA_SETADP_QUERY_COMMANDS_SUPPORTED, |
2604 | sizeof(struct qeth_ipacmd_setadpparms)); | |
2605 | rc = qeth_send_ipa_cmd(card, iob, qeth_query_setadapterparms_cb, NULL); | |
2606 | return rc; | |
2607 | } | |
2608 | EXPORT_SYMBOL_GPL(qeth_query_setadapterparms); | |
2609 | ||
2610 | int qeth_check_qdio_errors(struct qdio_buffer *buf, unsigned int qdio_error, | |
779e6e1c | 2611 | const char *dbftext) |
4a71df50 | 2612 | { |
779e6e1c | 2613 | if (qdio_error) { |
d11ba0c4 PT |
2614 | QETH_DBF_TEXT(TRACE, 2, dbftext); |
2615 | QETH_DBF_TEXT(QERR, 2, dbftext); | |
2616 | QETH_DBF_TEXT_(QERR, 2, " F15=%02X", | |
4a71df50 | 2617 | buf->element[15].flags & 0xff); |
d11ba0c4 | 2618 | QETH_DBF_TEXT_(QERR, 2, " F14=%02X", |
4a71df50 | 2619 | buf->element[14].flags & 0xff); |
d11ba0c4 | 2620 | QETH_DBF_TEXT_(QERR, 2, " qerr=%X", qdio_error); |
4a71df50 FB |
2621 | return 1; |
2622 | } | |
2623 | return 0; | |
2624 | } | |
2625 | EXPORT_SYMBOL_GPL(qeth_check_qdio_errors); | |
2626 | ||
2627 | void qeth_queue_input_buffer(struct qeth_card *card, int index) | |
2628 | { | |
2629 | struct qeth_qdio_q *queue = card->qdio.in_q; | |
2630 | int count; | |
2631 | int i; | |
2632 | int rc; | |
2633 | int newcount = 0; | |
2634 | ||
4a71df50 FB |
2635 | count = (index < queue->next_buf_to_init)? |
2636 | card->qdio.in_buf_pool.buf_count - | |
2637 | (queue->next_buf_to_init - index) : | |
2638 | card->qdio.in_buf_pool.buf_count - | |
2639 | (queue->next_buf_to_init + QDIO_MAX_BUFFERS_PER_Q - index); | |
2640 | /* only requeue at a certain threshold to avoid SIGAs */ | |
2641 | if (count >= QETH_IN_BUF_REQUEUE_THRESHOLD(card)) { | |
2642 | for (i = queue->next_buf_to_init; | |
2643 | i < queue->next_buf_to_init + count; ++i) { | |
2644 | if (qeth_init_input_buffer(card, | |
2645 | &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q])) { | |
2646 | break; | |
2647 | } else { | |
2648 | newcount++; | |
2649 | } | |
2650 | } | |
2651 | ||
2652 | if (newcount < count) { | |
2653 | /* we are in memory shortage so we switch back to | |
2654 | traditional skb allocation and drop packages */ | |
4a71df50 FB |
2655 | atomic_set(&card->force_alloc_skb, 3); |
2656 | count = newcount; | |
2657 | } else { | |
4a71df50 FB |
2658 | atomic_add_unless(&card->force_alloc_skb, -1, 0); |
2659 | } | |
2660 | ||
2661 | /* | |
2662 | * according to old code it should be avoided to requeue all | |
2663 | * 128 buffers in order to benefit from PCI avoidance. | |
2664 | * this function keeps at least one buffer (the buffer at | |
2665 | * 'index') un-requeued -> this buffer is the first buffer that | |
2666 | * will be requeued the next time | |
2667 | */ | |
2668 | if (card->options.performance_stats) { | |
2669 | card->perf_stats.inbound_do_qdio_cnt++; | |
2670 | card->perf_stats.inbound_do_qdio_start_time = | |
2671 | qeth_get_micros(); | |
2672 | } | |
779e6e1c JG |
2673 | rc = do_QDIO(CARD_DDEV(card), QDIO_FLAG_SYNC_INPUT, 0, |
2674 | queue->next_buf_to_init, count); | |
4a71df50 FB |
2675 | if (card->options.performance_stats) |
2676 | card->perf_stats.inbound_do_qdio_time += | |
2677 | qeth_get_micros() - | |
2678 | card->perf_stats.inbound_do_qdio_start_time; | |
2679 | if (rc) { | |
74eacdb9 FB |
2680 | dev_warn(&card->gdev->dev, |
2681 | "QDIO reported an error, rc=%i\n", rc); | |
d11ba0c4 PT |
2682 | QETH_DBF_TEXT(TRACE, 2, "qinberr"); |
2683 | QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card)); | |
4a71df50 FB |
2684 | } |
2685 | queue->next_buf_to_init = (queue->next_buf_to_init + count) % | |
2686 | QDIO_MAX_BUFFERS_PER_Q; | |
2687 | } | |
2688 | } | |
2689 | EXPORT_SYMBOL_GPL(qeth_queue_input_buffer); | |
2690 | ||
2691 | static int qeth_handle_send_error(struct qeth_card *card, | |
779e6e1c | 2692 | struct qeth_qdio_out_buffer *buffer, unsigned int qdio_err) |
4a71df50 FB |
2693 | { |
2694 | int sbalf15 = buffer->buffer->element[15].flags & 0xff; | |
4a71df50 | 2695 | |
d11ba0c4 | 2696 | QETH_DBF_TEXT(TRACE, 6, "hdsnderr"); |
58490f18 KDW |
2697 | if (card->info.type == QETH_CARD_TYPE_IQD) { |
2698 | if (sbalf15 == 0) { | |
2699 | qdio_err = 0; | |
2700 | } else { | |
2701 | qdio_err = 1; | |
2702 | } | |
2703 | } | |
779e6e1c | 2704 | qeth_check_qdio_errors(buffer->buffer, qdio_err, "qouterr"); |
d303b6fd JG |
2705 | |
2706 | if (!qdio_err) | |
4a71df50 | 2707 | return QETH_SEND_ERROR_NONE; |
d303b6fd JG |
2708 | |
2709 | if ((sbalf15 >= 15) && (sbalf15 <= 31)) | |
2710 | return QETH_SEND_ERROR_RETRY; | |
2711 | ||
2712 | QETH_DBF_TEXT(TRACE, 1, "lnkfail"); | |
2713 | QETH_DBF_TEXT_(TRACE, 1, "%s", CARD_BUS_ID(card)); | |
2714 | QETH_DBF_TEXT_(TRACE, 1, "%04x %02x", | |
2715 | (u16)qdio_err, (u8)sbalf15); | |
2716 | return QETH_SEND_ERROR_LINK_FAILURE; | |
4a71df50 FB |
2717 | } |
2718 | ||
2719 | /* | |
2720 | * Switched to packing state if the number of used buffers on a queue | |
2721 | * reaches a certain limit. | |
2722 | */ | |
2723 | static void qeth_switch_to_packing_if_needed(struct qeth_qdio_out_q *queue) | |
2724 | { | |
2725 | if (!queue->do_pack) { | |
2726 | if (atomic_read(&queue->used_buffers) | |
2727 | >= QETH_HIGH_WATERMARK_PACK){ | |
2728 | /* switch non-PACKING -> PACKING */ | |
d11ba0c4 | 2729 | QETH_DBF_TEXT(TRACE, 6, "np->pack"); |
4a71df50 FB |
2730 | if (queue->card->options.performance_stats) |
2731 | queue->card->perf_stats.sc_dp_p++; | |
2732 | queue->do_pack = 1; | |
2733 | } | |
2734 | } | |
2735 | } | |
2736 | ||
2737 | /* | |
2738 | * Switches from packing to non-packing mode. If there is a packing | |
2739 | * buffer on the queue this buffer will be prepared to be flushed. | |
2740 | * In that case 1 is returned to inform the caller. If no buffer | |
2741 | * has to be flushed, zero is returned. | |
2742 | */ | |
2743 | static int qeth_switch_to_nonpacking_if_needed(struct qeth_qdio_out_q *queue) | |
2744 | { | |
2745 | struct qeth_qdio_out_buffer *buffer; | |
2746 | int flush_count = 0; | |
2747 | ||
2748 | if (queue->do_pack) { | |
2749 | if (atomic_read(&queue->used_buffers) | |
2750 | <= QETH_LOW_WATERMARK_PACK) { | |
2751 | /* switch PACKING -> non-PACKING */ | |
d11ba0c4 | 2752 | QETH_DBF_TEXT(TRACE, 6, "pack->np"); |
4a71df50 FB |
2753 | if (queue->card->options.performance_stats) |
2754 | queue->card->perf_stats.sc_p_dp++; | |
2755 | queue->do_pack = 0; | |
2756 | /* flush packing buffers */ | |
2757 | buffer = &queue->bufs[queue->next_buf_to_fill]; | |
2758 | if ((atomic_read(&buffer->state) == | |
2759 | QETH_QDIO_BUF_EMPTY) && | |
2760 | (buffer->next_element_to_fill > 0)) { | |
2761 | atomic_set(&buffer->state, | |
2762 | QETH_QDIO_BUF_PRIMED); | |
2763 | flush_count++; | |
2764 | queue->next_buf_to_fill = | |
2765 | (queue->next_buf_to_fill + 1) % | |
2766 | QDIO_MAX_BUFFERS_PER_Q; | |
2767 | } | |
2768 | } | |
2769 | } | |
2770 | return flush_count; | |
2771 | } | |
2772 | ||
2773 | /* | |
2774 | * Called to flush a packing buffer if no more pci flags are on the queue. | |
2775 | * Checks if there is a packing buffer and prepares it to be flushed. | |
2776 | * In that case returns 1, otherwise zero. | |
2777 | */ | |
2778 | static int qeth_flush_buffers_on_no_pci(struct qeth_qdio_out_q *queue) | |
2779 | { | |
2780 | struct qeth_qdio_out_buffer *buffer; | |
2781 | ||
2782 | buffer = &queue->bufs[queue->next_buf_to_fill]; | |
2783 | if ((atomic_read(&buffer->state) == QETH_QDIO_BUF_EMPTY) && | |
2784 | (buffer->next_element_to_fill > 0)) { | |
2785 | /* it's a packing buffer */ | |
2786 | atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); | |
2787 | queue->next_buf_to_fill = | |
2788 | (queue->next_buf_to_fill + 1) % QDIO_MAX_BUFFERS_PER_Q; | |
2789 | return 1; | |
2790 | } | |
2791 | return 0; | |
2792 | } | |
2793 | ||
779e6e1c JG |
2794 | static void qeth_flush_buffers(struct qeth_qdio_out_q *queue, int index, |
2795 | int count) | |
4a71df50 FB |
2796 | { |
2797 | struct qeth_qdio_out_buffer *buf; | |
2798 | int rc; | |
2799 | int i; | |
2800 | unsigned int qdio_flags; | |
2801 | ||
4a71df50 FB |
2802 | for (i = index; i < index + count; ++i) { |
2803 | buf = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q]; | |
2804 | buf->buffer->element[buf->next_element_to_fill - 1].flags |= | |
2805 | SBAL_FLAGS_LAST_ENTRY; | |
2806 | ||
2807 | if (queue->card->info.type == QETH_CARD_TYPE_IQD) | |
2808 | continue; | |
2809 | ||
2810 | if (!queue->do_pack) { | |
2811 | if ((atomic_read(&queue->used_buffers) >= | |
2812 | (QETH_HIGH_WATERMARK_PACK - | |
2813 | QETH_WATERMARK_PACK_FUZZ)) && | |
2814 | !atomic_read(&queue->set_pci_flags_count)) { | |
2815 | /* it's likely that we'll go to packing | |
2816 | * mode soon */ | |
2817 | atomic_inc(&queue->set_pci_flags_count); | |
2818 | buf->buffer->element[0].flags |= 0x40; | |
2819 | } | |
2820 | } else { | |
2821 | if (!atomic_read(&queue->set_pci_flags_count)) { | |
2822 | /* | |
2823 | * there's no outstanding PCI any more, so we | |
2824 | * have to request a PCI to be sure the the PCI | |
2825 | * will wake at some time in the future then we | |
2826 | * can flush packed buffers that might still be | |
2827 | * hanging around, which can happen if no | |
2828 | * further send was requested by the stack | |
2829 | */ | |
2830 | atomic_inc(&queue->set_pci_flags_count); | |
2831 | buf->buffer->element[0].flags |= 0x40; | |
2832 | } | |
2833 | } | |
2834 | } | |
2835 | ||
58490f18 | 2836 | queue->sync_iqdio_error = 0; |
4a71df50 FB |
2837 | queue->card->dev->trans_start = jiffies; |
2838 | if (queue->card->options.performance_stats) { | |
2839 | queue->card->perf_stats.outbound_do_qdio_cnt++; | |
2840 | queue->card->perf_stats.outbound_do_qdio_start_time = | |
2841 | qeth_get_micros(); | |
2842 | } | |
2843 | qdio_flags = QDIO_FLAG_SYNC_OUTPUT; | |
4a71df50 FB |
2844 | if (atomic_read(&queue->set_pci_flags_count)) |
2845 | qdio_flags |= QDIO_FLAG_PCI_OUT; | |
2846 | rc = do_QDIO(CARD_DDEV(queue->card), qdio_flags, | |
779e6e1c | 2847 | queue->queue_no, index, count); |
4a71df50 FB |
2848 | if (queue->card->options.performance_stats) |
2849 | queue->card->perf_stats.outbound_do_qdio_time += | |
2850 | qeth_get_micros() - | |
2851 | queue->card->perf_stats.outbound_do_qdio_start_time; | |
58490f18 KDW |
2852 | if (rc > 0) { |
2853 | if (!(rc & QDIO_ERROR_SIGA_BUSY)) | |
2854 | queue->sync_iqdio_error = rc & 3; | |
2855 | } | |
4a71df50 | 2856 | if (rc) { |
d303b6fd JG |
2857 | queue->card->stats.tx_errors += count; |
2858 | /* ignore temporary SIGA errors without busy condition */ | |
2859 | if (rc == QDIO_ERROR_SIGA_TARGET) | |
2860 | return; | |
d11ba0c4 PT |
2861 | QETH_DBF_TEXT(TRACE, 2, "flushbuf"); |
2862 | QETH_DBF_TEXT_(TRACE, 2, " err%d", rc); | |
2863 | QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_DDEV_ID(queue->card)); | |
d303b6fd | 2864 | |
4a71df50 FB |
2865 | /* this must not happen under normal circumstances. if it |
2866 | * happens something is really wrong -> recover */ | |
2867 | qeth_schedule_recovery(queue->card); | |
2868 | return; | |
2869 | } | |
2870 | atomic_add(count, &queue->used_buffers); | |
2871 | if (queue->card->options.performance_stats) | |
2872 | queue->card->perf_stats.bufs_sent += count; | |
2873 | } | |
2874 | ||
2875 | static void qeth_check_outbound_queue(struct qeth_qdio_out_q *queue) | |
2876 | { | |
2877 | int index; | |
2878 | int flush_cnt = 0; | |
2879 | int q_was_packing = 0; | |
2880 | ||
2881 | /* | |
2882 | * check if weed have to switch to non-packing mode or if | |
2883 | * we have to get a pci flag out on the queue | |
2884 | */ | |
2885 | if ((atomic_read(&queue->used_buffers) <= QETH_LOW_WATERMARK_PACK) || | |
2886 | !atomic_read(&queue->set_pci_flags_count)) { | |
2887 | if (atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH) == | |
2888 | QETH_OUT_Q_UNLOCKED) { | |
2889 | /* | |
2890 | * If we get in here, there was no action in | |
2891 | * do_send_packet. So, we check if there is a | |
2892 | * packing buffer to be flushed here. | |
2893 | */ | |
2894 | netif_stop_queue(queue->card->dev); | |
2895 | index = queue->next_buf_to_fill; | |
2896 | q_was_packing = queue->do_pack; | |
2897 | /* queue->do_pack may change */ | |
2898 | barrier(); | |
2899 | flush_cnt += qeth_switch_to_nonpacking_if_needed(queue); | |
2900 | if (!flush_cnt && | |
2901 | !atomic_read(&queue->set_pci_flags_count)) | |
2902 | flush_cnt += | |
2903 | qeth_flush_buffers_on_no_pci(queue); | |
2904 | if (queue->card->options.performance_stats && | |
2905 | q_was_packing) | |
2906 | queue->card->perf_stats.bufs_sent_pack += | |
2907 | flush_cnt; | |
2908 | if (flush_cnt) | |
779e6e1c | 2909 | qeth_flush_buffers(queue, index, flush_cnt); |
4a71df50 FB |
2910 | atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); |
2911 | } | |
2912 | } | |
2913 | } | |
2914 | ||
779e6e1c JG |
2915 | void qeth_qdio_output_handler(struct ccw_device *ccwdev, |
2916 | unsigned int qdio_error, int __queue, int first_element, | |
2917 | int count, unsigned long card_ptr) | |
4a71df50 FB |
2918 | { |
2919 | struct qeth_card *card = (struct qeth_card *) card_ptr; | |
2920 | struct qeth_qdio_out_q *queue = card->qdio.out_qs[__queue]; | |
2921 | struct qeth_qdio_out_buffer *buffer; | |
2922 | int i; | |
58490f18 | 2923 | unsigned qeth_send_err; |
4a71df50 | 2924 | |
d11ba0c4 | 2925 | QETH_DBF_TEXT(TRACE, 6, "qdouhdl"); |
779e6e1c JG |
2926 | if (qdio_error & QDIO_ERROR_ACTIVATE_CHECK_CONDITION) { |
2927 | QETH_DBF_TEXT(TRACE, 2, "achkcond"); | |
2928 | QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card)); | |
2929 | netif_stop_queue(card->dev); | |
2930 | qeth_schedule_recovery(card); | |
2931 | return; | |
4a71df50 FB |
2932 | } |
2933 | if (card->options.performance_stats) { | |
2934 | card->perf_stats.outbound_handler_cnt++; | |
2935 | card->perf_stats.outbound_handler_start_time = | |
2936 | qeth_get_micros(); | |
2937 | } | |
2938 | for (i = first_element; i < (first_element + count); ++i) { | |
2939 | buffer = &queue->bufs[i % QDIO_MAX_BUFFERS_PER_Q]; | |
58490f18 KDW |
2940 | qeth_send_err = qeth_handle_send_error(card, buffer, qdio_error); |
2941 | __qeth_clear_output_buffer(queue, buffer, | |
2942 | (qeth_send_err == QETH_SEND_ERROR_RETRY) ? 1 : 0); | |
4a71df50 FB |
2943 | } |
2944 | atomic_sub(count, &queue->used_buffers); | |
2945 | /* check if we need to do something on this outbound queue */ | |
2946 | if (card->info.type != QETH_CARD_TYPE_IQD) | |
2947 | qeth_check_outbound_queue(queue); | |
2948 | ||
2949 | netif_wake_queue(queue->card->dev); | |
2950 | if (card->options.performance_stats) | |
2951 | card->perf_stats.outbound_handler_time += qeth_get_micros() - | |
2952 | card->perf_stats.outbound_handler_start_time; | |
2953 | } | |
2954 | EXPORT_SYMBOL_GPL(qeth_qdio_output_handler); | |
2955 | ||
4a71df50 FB |
2956 | int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb, |
2957 | int ipv, int cast_type) | |
2958 | { | |
2959 | if (!ipv && (card->info.type == QETH_CARD_TYPE_OSAE)) | |
2960 | return card->qdio.default_out_queue; | |
2961 | switch (card->qdio.no_out_queues) { | |
2962 | case 4: | |
2963 | if (cast_type && card->info.is_multicast_different) | |
2964 | return card->info.is_multicast_different & | |
2965 | (card->qdio.no_out_queues - 1); | |
2966 | if (card->qdio.do_prio_queueing && (ipv == 4)) { | |
2967 | const u8 tos = ip_hdr(skb)->tos; | |
2968 | ||
2969 | if (card->qdio.do_prio_queueing == | |
2970 | QETH_PRIO_Q_ING_TOS) { | |
2971 | if (tos & IP_TOS_NOTIMPORTANT) | |
2972 | return 3; | |
2973 | if (tos & IP_TOS_HIGHRELIABILITY) | |
2974 | return 2; | |
2975 | if (tos & IP_TOS_HIGHTHROUGHPUT) | |
2976 | return 1; | |
2977 | if (tos & IP_TOS_LOWDELAY) | |
2978 | return 0; | |
2979 | } | |
2980 | if (card->qdio.do_prio_queueing == | |
2981 | QETH_PRIO_Q_ING_PREC) | |
2982 | return 3 - (tos >> 6); | |
2983 | } else if (card->qdio.do_prio_queueing && (ipv == 6)) { | |
2984 | /* TODO: IPv6!!! */ | |
2985 | } | |
2986 | return card->qdio.default_out_queue; | |
2987 | case 1: /* fallthrough for single-out-queue 1920-device */ | |
2988 | default: | |
2989 | return card->qdio.default_out_queue; | |
2990 | } | |
2991 | } | |
2992 | EXPORT_SYMBOL_GPL(qeth_get_priority_queue); | |
2993 | ||
4a71df50 FB |
2994 | int qeth_get_elements_no(struct qeth_card *card, void *hdr, |
2995 | struct sk_buff *skb, int elems) | |
2996 | { | |
2997 | int elements_needed = 0; | |
2998 | ||
2999 | if (skb_shinfo(skb)->nr_frags > 0) | |
3000 | elements_needed = (skb_shinfo(skb)->nr_frags + 1); | |
3001 | if (elements_needed == 0) | |
683d718a FB |
3002 | elements_needed = 1 + (((((unsigned long) skb->data) % |
3003 | PAGE_SIZE) + skb->len) >> PAGE_SHIFT); | |
4a71df50 | 3004 | if ((elements_needed + elems) > QETH_MAX_BUFFER_ELEMENTS(card)) { |
14cc21b6 | 3005 | QETH_DBF_MESSAGE(2, "Invalid size of IP packet " |
4a71df50 FB |
3006 | "(Number=%d / Length=%d). Discarded.\n", |
3007 | (elements_needed+elems), skb->len); | |
3008 | return 0; | |
3009 | } | |
3010 | return elements_needed; | |
3011 | } | |
3012 | EXPORT_SYMBOL_GPL(qeth_get_elements_no); | |
3013 | ||
f90b744e | 3014 | static inline void __qeth_fill_buffer(struct sk_buff *skb, |
683d718a FB |
3015 | struct qdio_buffer *buffer, int is_tso, int *next_element_to_fill, |
3016 | int offset) | |
4a71df50 | 3017 | { |
e1f03ae8 | 3018 | int length = skb->len; |
4a71df50 FB |
3019 | int length_here; |
3020 | int element; | |
3021 | char *data; | |
3022 | int first_lap ; | |
3023 | ||
3024 | element = *next_element_to_fill; | |
3025 | data = skb->data; | |
3026 | first_lap = (is_tso == 0 ? 1 : 0); | |
3027 | ||
683d718a FB |
3028 | if (offset >= 0) { |
3029 | data = skb->data + offset; | |
e1f03ae8 | 3030 | length -= offset; |
683d718a FB |
3031 | first_lap = 0; |
3032 | } | |
3033 | ||
4a71df50 FB |
3034 | while (length > 0) { |
3035 | /* length_here is the remaining amount of data in this page */ | |
3036 | length_here = PAGE_SIZE - ((unsigned long) data % PAGE_SIZE); | |
3037 | if (length < length_here) | |
3038 | length_here = length; | |
3039 | ||
3040 | buffer->element[element].addr = data; | |
3041 | buffer->element[element].length = length_here; | |
3042 | length -= length_here; | |
3043 | if (!length) { | |
3044 | if (first_lap) | |
3045 | buffer->element[element].flags = 0; | |
3046 | else | |
3047 | buffer->element[element].flags = | |
3048 | SBAL_FLAGS_LAST_FRAG; | |
3049 | } else { | |
3050 | if (first_lap) | |
3051 | buffer->element[element].flags = | |
3052 | SBAL_FLAGS_FIRST_FRAG; | |
3053 | else | |
3054 | buffer->element[element].flags = | |
3055 | SBAL_FLAGS_MIDDLE_FRAG; | |
3056 | } | |
3057 | data += length_here; | |
3058 | element++; | |
3059 | first_lap = 0; | |
3060 | } | |
3061 | *next_element_to_fill = element; | |
3062 | } | |
3063 | ||
f90b744e | 3064 | static inline int qeth_fill_buffer(struct qeth_qdio_out_q *queue, |
683d718a FB |
3065 | struct qeth_qdio_out_buffer *buf, struct sk_buff *skb, |
3066 | struct qeth_hdr *hdr, int offset, int hd_len) | |
4a71df50 FB |
3067 | { |
3068 | struct qdio_buffer *buffer; | |
4a71df50 FB |
3069 | int flush_cnt = 0, hdr_len, large_send = 0; |
3070 | ||
4a71df50 FB |
3071 | buffer = buf->buffer; |
3072 | atomic_inc(&skb->users); | |
3073 | skb_queue_tail(&buf->skb_list, skb); | |
3074 | ||
4a71df50 | 3075 | /*check first on TSO ....*/ |
683d718a | 3076 | if (hdr->hdr.l3.id == QETH_HEADER_TYPE_TSO) { |
4a71df50 FB |
3077 | int element = buf->next_element_to_fill; |
3078 | ||
683d718a FB |
3079 | hdr_len = sizeof(struct qeth_hdr_tso) + |
3080 | ((struct qeth_hdr_tso *)hdr)->ext.dg_hdr_len; | |
4a71df50 FB |
3081 | /*fill first buffer entry only with header information */ |
3082 | buffer->element[element].addr = skb->data; | |
3083 | buffer->element[element].length = hdr_len; | |
3084 | buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG; | |
3085 | buf->next_element_to_fill++; | |
3086 | skb->data += hdr_len; | |
3087 | skb->len -= hdr_len; | |
3088 | large_send = 1; | |
3089 | } | |
683d718a FB |
3090 | |
3091 | if (offset >= 0) { | |
3092 | int element = buf->next_element_to_fill; | |
3093 | buffer->element[element].addr = hdr; | |
3094 | buffer->element[element].length = sizeof(struct qeth_hdr) + | |
3095 | hd_len; | |
3096 | buffer->element[element].flags = SBAL_FLAGS_FIRST_FRAG; | |
3097 | buf->is_header[element] = 1; | |
3098 | buf->next_element_to_fill++; | |
3099 | } | |
3100 | ||
4a71df50 FB |
3101 | if (skb_shinfo(skb)->nr_frags == 0) |
3102 | __qeth_fill_buffer(skb, buffer, large_send, | |
683d718a | 3103 | (int *)&buf->next_element_to_fill, offset); |
4a71df50 FB |
3104 | else |
3105 | __qeth_fill_buffer_frag(skb, buffer, large_send, | |
3106 | (int *)&buf->next_element_to_fill); | |
3107 | ||
3108 | if (!queue->do_pack) { | |
d11ba0c4 | 3109 | QETH_DBF_TEXT(TRACE, 6, "fillbfnp"); |
4a71df50 FB |
3110 | /* set state to PRIMED -> will be flushed */ |
3111 | atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); | |
3112 | flush_cnt = 1; | |
3113 | } else { | |
d11ba0c4 | 3114 | QETH_DBF_TEXT(TRACE, 6, "fillbfpa"); |
4a71df50 FB |
3115 | if (queue->card->options.performance_stats) |
3116 | queue->card->perf_stats.skbs_sent_pack++; | |
3117 | if (buf->next_element_to_fill >= | |
3118 | QETH_MAX_BUFFER_ELEMENTS(queue->card)) { | |
3119 | /* | |
3120 | * packed buffer if full -> set state PRIMED | |
3121 | * -> will be flushed | |
3122 | */ | |
3123 | atomic_set(&buf->state, QETH_QDIO_BUF_PRIMED); | |
3124 | flush_cnt = 1; | |
3125 | } | |
3126 | } | |
3127 | return flush_cnt; | |
3128 | } | |
3129 | ||
3130 | int qeth_do_send_packet_fast(struct qeth_card *card, | |
3131 | struct qeth_qdio_out_q *queue, struct sk_buff *skb, | |
3132 | struct qeth_hdr *hdr, int elements_needed, | |
64ef8957 | 3133 | int offset, int hd_len) |
4a71df50 FB |
3134 | { |
3135 | struct qeth_qdio_out_buffer *buffer; | |
58490f18 KDW |
3136 | struct sk_buff *skb1; |
3137 | struct qeth_skb_data *retry_ctrl; | |
4a71df50 | 3138 | int index; |
58490f18 | 3139 | int rc; |
4a71df50 | 3140 | |
4a71df50 FB |
3141 | /* spin until we get the queue ... */ |
3142 | while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, | |
3143 | QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); | |
3144 | /* ... now we've got the queue */ | |
3145 | index = queue->next_buf_to_fill; | |
3146 | buffer = &queue->bufs[queue->next_buf_to_fill]; | |
3147 | /* | |
3148 | * check if buffer is empty to make sure that we do not 'overtake' | |
3149 | * ourselves and try to fill a buffer that is already primed | |
3150 | */ | |
3151 | if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) | |
3152 | goto out; | |
64ef8957 | 3153 | queue->next_buf_to_fill = (queue->next_buf_to_fill + 1) % |
4a71df50 | 3154 | QDIO_MAX_BUFFERS_PER_Q; |
4a71df50 | 3155 | atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); |
64ef8957 FB |
3156 | qeth_fill_buffer(queue, buffer, skb, hdr, offset, hd_len); |
3157 | qeth_flush_buffers(queue, index, 1); | |
58490f18 KDW |
3158 | if (queue->sync_iqdio_error == 2) { |
3159 | skb1 = skb_dequeue(&buffer->skb_list); | |
3160 | while (skb1) { | |
3161 | atomic_dec(&skb1->users); | |
3162 | skb1 = skb_dequeue(&buffer->skb_list); | |
3163 | } | |
3164 | retry_ctrl = (struct qeth_skb_data *) &skb->cb[16]; | |
3165 | if (retry_ctrl->magic != QETH_SKB_MAGIC) { | |
3166 | retry_ctrl->magic = QETH_SKB_MAGIC; | |
3167 | retry_ctrl->count = 0; | |
3168 | } | |
3169 | if (retry_ctrl->count < QETH_SIGA_CC2_RETRIES) { | |
3170 | retry_ctrl->count++; | |
3171 | rc = dev_queue_xmit(skb); | |
3172 | } else { | |
3173 | dev_kfree_skb_any(skb); | |
3174 | QETH_DBF_TEXT(QERR, 2, "qrdrop"); | |
3175 | } | |
3176 | } | |
4a71df50 FB |
3177 | return 0; |
3178 | out: | |
3179 | atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); | |
3180 | return -EBUSY; | |
3181 | } | |
3182 | EXPORT_SYMBOL_GPL(qeth_do_send_packet_fast); | |
3183 | ||
3184 | int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue, | |
3185 | struct sk_buff *skb, struct qeth_hdr *hdr, | |
64ef8957 | 3186 | int elements_needed) |
4a71df50 FB |
3187 | { |
3188 | struct qeth_qdio_out_buffer *buffer; | |
3189 | int start_index; | |
3190 | int flush_count = 0; | |
3191 | int do_pack = 0; | |
3192 | int tmp; | |
3193 | int rc = 0; | |
3194 | ||
4a71df50 FB |
3195 | /* spin until we get the queue ... */ |
3196 | while (atomic_cmpxchg(&queue->state, QETH_OUT_Q_UNLOCKED, | |
3197 | QETH_OUT_Q_LOCKED) != QETH_OUT_Q_UNLOCKED); | |
3198 | start_index = queue->next_buf_to_fill; | |
3199 | buffer = &queue->bufs[queue->next_buf_to_fill]; | |
3200 | /* | |
3201 | * check if buffer is empty to make sure that we do not 'overtake' | |
3202 | * ourselves and try to fill a buffer that is already primed | |
3203 | */ | |
3204 | if (atomic_read(&buffer->state) != QETH_QDIO_BUF_EMPTY) { | |
3205 | atomic_set(&queue->state, QETH_OUT_Q_UNLOCKED); | |
3206 | return -EBUSY; | |
3207 | } | |
3208 | /* check if we need to switch packing state of this queue */ | |
3209 | qeth_switch_to_packing_if_needed(queue); | |
3210 | if (queue->do_pack) { | |
3211 | do_pack = 1; | |
64ef8957 FB |
3212 | /* does packet fit in current buffer? */ |
3213 | if ((QETH_MAX_BUFFER_ELEMENTS(card) - | |
3214 | buffer->next_element_to_fill) < elements_needed) { | |
3215 | /* ... no -> set state PRIMED */ | |
3216 | atomic_set(&buffer->state, QETH_QDIO_BUF_PRIMED); | |
3217 | flush_count++; | |
3218 | queue->next_buf_to_fill = | |
3219 | (queue->next_buf_to_fill + 1) % | |
3220 | QDIO_MAX_BUFFERS_PER_Q; | |
3221 | buffer = &queue->bufs[queue->next_buf_to_fill]; | |
3222 | /* we did a step forward, so check buffer state | |
3223 | * again */ | |
3224 | if (atomic_read(&buffer->state) != | |
3225 | QETH_QDIO_BUF_EMPTY) { | |
3226 | qeth_flush_buffers(queue, start_index, | |
779e6e1c | 3227 | flush_count); |
64ef8957 | 3228 | atomic_set(&queue->state, |
4a71df50 | 3229 | QETH_OUT_Q_UNLOCKED); |
64ef8957 | 3230 | return -EBUSY; |
4a71df50 FB |
3231 | } |
3232 | } | |
3233 | } | |
64ef8957 | 3234 | tmp = qeth_fill_buffer(queue, buffer, skb, hdr, -1, 0); |
4a71df50 FB |
3235 | queue->next_buf_to_fill = (queue->next_buf_to_fill + tmp) % |
3236 | QDIO_MAX_BUFFERS_PER_Q; | |
3237 | flush_count += tmp; | |
4a71df50 | 3238 | if (flush_count) |
779e6e1c | 3239 | qeth_flush_buffers(queue, start_index, flush_count); |
4a71df50 FB |
3240 | else if (!atomic_read(&queue->set_pci_flags_count)) |
3241 | atomic_xchg(&queue->state, QETH_OUT_Q_LOCKED_FLUSH); | |
3242 | /* | |
3243 | * queue->state will go from LOCKED -> UNLOCKED or from | |
3244 | * LOCKED_FLUSH -> LOCKED if output_handler wanted to 'notify' us | |
3245 | * (switch packing state or flush buffer to get another pci flag out). | |
3246 | * In that case we will enter this loop | |
3247 | */ | |
3248 | while (atomic_dec_return(&queue->state)) { | |
3249 | flush_count = 0; | |
3250 | start_index = queue->next_buf_to_fill; | |
3251 | /* check if we can go back to non-packing state */ | |
3252 | flush_count += qeth_switch_to_nonpacking_if_needed(queue); | |
3253 | /* | |
3254 | * check if we need to flush a packing buffer to get a pci | |
3255 | * flag out on the queue | |
3256 | */ | |
3257 | if (!flush_count && !atomic_read(&queue->set_pci_flags_count)) | |
3258 | flush_count += qeth_flush_buffers_on_no_pci(queue); | |
3259 | if (flush_count) | |
779e6e1c | 3260 | qeth_flush_buffers(queue, start_index, flush_count); |
4a71df50 FB |
3261 | } |
3262 | /* at this point the queue is UNLOCKED again */ | |
3263 | if (queue->card->options.performance_stats && do_pack) | |
3264 | queue->card->perf_stats.bufs_sent_pack += flush_count; | |
3265 | ||
3266 | return rc; | |
3267 | } | |
3268 | EXPORT_SYMBOL_GPL(qeth_do_send_packet); | |
3269 | ||
3270 | static int qeth_setadp_promisc_mode_cb(struct qeth_card *card, | |
3271 | struct qeth_reply *reply, unsigned long data) | |
3272 | { | |
3273 | struct qeth_ipa_cmd *cmd; | |
3274 | struct qeth_ipacmd_setadpparms *setparms; | |
3275 | ||
d11ba0c4 | 3276 | QETH_DBF_TEXT(TRACE, 4, "prmadpcb"); |
4a71df50 FB |
3277 | |
3278 | cmd = (struct qeth_ipa_cmd *) data; | |
3279 | setparms = &(cmd->data.setadapterparms); | |
3280 | ||
3281 | qeth_default_setadapterparms_cb(card, reply, (unsigned long)cmd); | |
3282 | if (cmd->hdr.return_code) { | |
d11ba0c4 | 3283 | QETH_DBF_TEXT_(TRACE, 4, "prmrc%2.2x", cmd->hdr.return_code); |
4a71df50 FB |
3284 | setparms->data.mode = SET_PROMISC_MODE_OFF; |
3285 | } | |
3286 | card->info.promisc_mode = setparms->data.mode; | |
3287 | return 0; | |
3288 | } | |
3289 | ||
3290 | void qeth_setadp_promisc_mode(struct qeth_card *card) | |
3291 | { | |
3292 | enum qeth_ipa_promisc_modes mode; | |
3293 | struct net_device *dev = card->dev; | |
3294 | struct qeth_cmd_buffer *iob; | |
3295 | struct qeth_ipa_cmd *cmd; | |
3296 | ||
d11ba0c4 | 3297 | QETH_DBF_TEXT(TRACE, 4, "setprom"); |
4a71df50 FB |
3298 | |
3299 | if (((dev->flags & IFF_PROMISC) && | |
3300 | (card->info.promisc_mode == SET_PROMISC_MODE_ON)) || | |
3301 | (!(dev->flags & IFF_PROMISC) && | |
3302 | (card->info.promisc_mode == SET_PROMISC_MODE_OFF))) | |
3303 | return; | |
3304 | mode = SET_PROMISC_MODE_OFF; | |
3305 | if (dev->flags & IFF_PROMISC) | |
3306 | mode = SET_PROMISC_MODE_ON; | |
d11ba0c4 | 3307 | QETH_DBF_TEXT_(TRACE, 4, "mode:%x", mode); |
4a71df50 FB |
3308 | |
3309 | iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE, | |
3310 | sizeof(struct qeth_ipacmd_setadpparms)); | |
3311 | cmd = (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE); | |
3312 | cmd->data.setadapterparms.data.mode = mode; | |
3313 | qeth_send_ipa_cmd(card, iob, qeth_setadp_promisc_mode_cb, NULL); | |
3314 | } | |
3315 | EXPORT_SYMBOL_GPL(qeth_setadp_promisc_mode); | |
3316 | ||
3317 | int qeth_change_mtu(struct net_device *dev, int new_mtu) | |
3318 | { | |
3319 | struct qeth_card *card; | |
3320 | char dbf_text[15]; | |
3321 | ||
509e2562 | 3322 | card = dev->ml_priv; |
4a71df50 | 3323 | |
d11ba0c4 | 3324 | QETH_DBF_TEXT(TRACE, 4, "chgmtu"); |
4a71df50 | 3325 | sprintf(dbf_text, "%8x", new_mtu); |
d11ba0c4 | 3326 | QETH_DBF_TEXT(TRACE, 4, dbf_text); |
4a71df50 FB |
3327 | |
3328 | if (new_mtu < 64) | |
3329 | return -EINVAL; | |
3330 | if (new_mtu > 65535) | |
3331 | return -EINVAL; | |
3332 | if ((!qeth_is_supported(card, IPA_IP_FRAGMENTATION)) && | |
3333 | (!qeth_mtu_is_valid(card, new_mtu))) | |
3334 | return -EINVAL; | |
3335 | dev->mtu = new_mtu; | |
3336 | return 0; | |
3337 | } | |
3338 | EXPORT_SYMBOL_GPL(qeth_change_mtu); | |
3339 | ||
3340 | struct net_device_stats *qeth_get_stats(struct net_device *dev) | |
3341 | { | |
3342 | struct qeth_card *card; | |
3343 | ||
509e2562 | 3344 | card = dev->ml_priv; |
4a71df50 | 3345 | |
d11ba0c4 | 3346 | QETH_DBF_TEXT(TRACE, 5, "getstat"); |
4a71df50 FB |
3347 | |
3348 | return &card->stats; | |
3349 | } | |
3350 | EXPORT_SYMBOL_GPL(qeth_get_stats); | |
3351 | ||
3352 | static int qeth_setadpparms_change_macaddr_cb(struct qeth_card *card, | |
3353 | struct qeth_reply *reply, unsigned long data) | |
3354 | { | |
3355 | struct qeth_ipa_cmd *cmd; | |
3356 | ||
d11ba0c4 | 3357 | QETH_DBF_TEXT(TRACE, 4, "chgmaccb"); |
4a71df50 FB |
3358 | |
3359 | cmd = (struct qeth_ipa_cmd *) data; | |
3360 | if (!card->options.layer2 || | |
3361 | !(card->info.mac_bits & QETH_LAYER2_MAC_READ)) { | |
3362 | memcpy(card->dev->dev_addr, | |
3363 | &cmd->data.setadapterparms.data.change_addr.addr, | |
3364 | OSA_ADDR_LEN); | |
3365 | card->info.mac_bits |= QETH_LAYER2_MAC_READ; | |
3366 | } | |
3367 | qeth_default_setadapterparms_cb(card, reply, (unsigned long) cmd); | |
3368 | return 0; | |
3369 | } | |
3370 | ||
3371 | int qeth_setadpparms_change_macaddr(struct qeth_card *card) | |
3372 | { | |
3373 | int rc; | |
3374 | struct qeth_cmd_buffer *iob; | |
3375 | struct qeth_ipa_cmd *cmd; | |
3376 | ||
d11ba0c4 | 3377 | QETH_DBF_TEXT(TRACE, 4, "chgmac"); |
4a71df50 FB |
3378 | |
3379 | iob = qeth_get_adapter_cmd(card, IPA_SETADP_ALTER_MAC_ADDRESS, | |
3380 | sizeof(struct qeth_ipacmd_setadpparms)); | |
3381 | cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); | |
3382 | cmd->data.setadapterparms.data.change_addr.cmd = CHANGE_ADDR_READ_MAC; | |
3383 | cmd->data.setadapterparms.data.change_addr.addr_size = OSA_ADDR_LEN; | |
3384 | memcpy(&cmd->data.setadapterparms.data.change_addr.addr, | |
3385 | card->dev->dev_addr, OSA_ADDR_LEN); | |
3386 | rc = qeth_send_ipa_cmd(card, iob, qeth_setadpparms_change_macaddr_cb, | |
3387 | NULL); | |
3388 | return rc; | |
3389 | } | |
3390 | EXPORT_SYMBOL_GPL(qeth_setadpparms_change_macaddr); | |
3391 | ||
3392 | void qeth_tx_timeout(struct net_device *dev) | |
3393 | { | |
3394 | struct qeth_card *card; | |
3395 | ||
509e2562 | 3396 | card = dev->ml_priv; |
4a71df50 FB |
3397 | card->stats.tx_errors++; |
3398 | qeth_schedule_recovery(card); | |
3399 | } | |
3400 | EXPORT_SYMBOL_GPL(qeth_tx_timeout); | |
3401 | ||
3402 | int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum) | |
3403 | { | |
509e2562 | 3404 | struct qeth_card *card = dev->ml_priv; |
4a71df50 FB |
3405 | int rc = 0; |
3406 | ||
3407 | switch (regnum) { | |
3408 | case MII_BMCR: /* Basic mode control register */ | |
3409 | rc = BMCR_FULLDPLX; | |
3410 | if ((card->info.link_type != QETH_LINK_TYPE_GBIT_ETH) && | |
3411 | (card->info.link_type != QETH_LINK_TYPE_OSN) && | |
3412 | (card->info.link_type != QETH_LINK_TYPE_10GBIT_ETH)) | |
3413 | rc |= BMCR_SPEED100; | |
3414 | break; | |
3415 | case MII_BMSR: /* Basic mode status register */ | |
3416 | rc = BMSR_ERCAP | BMSR_ANEGCOMPLETE | BMSR_LSTATUS | | |
3417 | BMSR_10HALF | BMSR_10FULL | BMSR_100HALF | BMSR_100FULL | | |
3418 | BMSR_100BASE4; | |
3419 | break; | |
3420 | case MII_PHYSID1: /* PHYS ID 1 */ | |
3421 | rc = (dev->dev_addr[0] << 16) | (dev->dev_addr[1] << 8) | | |
3422 | dev->dev_addr[2]; | |
3423 | rc = (rc >> 5) & 0xFFFF; | |
3424 | break; | |
3425 | case MII_PHYSID2: /* PHYS ID 2 */ | |
3426 | rc = (dev->dev_addr[2] << 10) & 0xFFFF; | |
3427 | break; | |
3428 | case MII_ADVERTISE: /* Advertisement control reg */ | |
3429 | rc = ADVERTISE_ALL; | |
3430 | break; | |
3431 | case MII_LPA: /* Link partner ability reg */ | |
3432 | rc = LPA_10HALF | LPA_10FULL | LPA_100HALF | LPA_100FULL | | |
3433 | LPA_100BASE4 | LPA_LPACK; | |
3434 | break; | |
3435 | case MII_EXPANSION: /* Expansion register */ | |
3436 | break; | |
3437 | case MII_DCOUNTER: /* disconnect counter */ | |
3438 | break; | |
3439 | case MII_FCSCOUNTER: /* false carrier counter */ | |
3440 | break; | |
3441 | case MII_NWAYTEST: /* N-way auto-neg test register */ | |
3442 | break; | |
3443 | case MII_RERRCOUNTER: /* rx error counter */ | |
3444 | rc = card->stats.rx_errors; | |
3445 | break; | |
3446 | case MII_SREVISION: /* silicon revision */ | |
3447 | break; | |
3448 | case MII_RESV1: /* reserved 1 */ | |
3449 | break; | |
3450 | case MII_LBRERROR: /* loopback, rx, bypass error */ | |
3451 | break; | |
3452 | case MII_PHYADDR: /* physical address */ | |
3453 | break; | |
3454 | case MII_RESV2: /* reserved 2 */ | |
3455 | break; | |
3456 | case MII_TPISTATUS: /* TPI status for 10mbps */ | |
3457 | break; | |
3458 | case MII_NCONFIG: /* network interface config */ | |
3459 | break; | |
3460 | default: | |
3461 | break; | |
3462 | } | |
3463 | return rc; | |
3464 | } | |
3465 | EXPORT_SYMBOL_GPL(qeth_mdio_read); | |
3466 | ||
3467 | static int qeth_send_ipa_snmp_cmd(struct qeth_card *card, | |
3468 | struct qeth_cmd_buffer *iob, int len, | |
3469 | int (*reply_cb)(struct qeth_card *, struct qeth_reply *, | |
3470 | unsigned long), | |
3471 | void *reply_param) | |
3472 | { | |
3473 | u16 s1, s2; | |
3474 | ||
d11ba0c4 | 3475 | QETH_DBF_TEXT(TRACE, 4, "sendsnmp"); |
4a71df50 FB |
3476 | |
3477 | memcpy(iob->data, IPA_PDU_HEADER, IPA_PDU_HEADER_SIZE); | |
3478 | memcpy(QETH_IPA_CMD_DEST_ADDR(iob->data), | |
3479 | &card->token.ulp_connection_r, QETH_MPC_TOKEN_LENGTH); | |
3480 | /* adjust PDU length fields in IPA_PDU_HEADER */ | |
3481 | s1 = (u32) IPA_PDU_HEADER_SIZE + len; | |
3482 | s2 = (u32) len; | |
3483 | memcpy(QETH_IPA_PDU_LEN_TOTAL(iob->data), &s1, 2); | |
3484 | memcpy(QETH_IPA_PDU_LEN_PDU1(iob->data), &s2, 2); | |
3485 | memcpy(QETH_IPA_PDU_LEN_PDU2(iob->data), &s2, 2); | |
3486 | memcpy(QETH_IPA_PDU_LEN_PDU3(iob->data), &s2, 2); | |
3487 | return qeth_send_control_data(card, IPA_PDU_HEADER_SIZE + len, iob, | |
3488 | reply_cb, reply_param); | |
3489 | } | |
3490 | ||
3491 | static int qeth_snmp_command_cb(struct qeth_card *card, | |
3492 | struct qeth_reply *reply, unsigned long sdata) | |
3493 | { | |
3494 | struct qeth_ipa_cmd *cmd; | |
3495 | struct qeth_arp_query_info *qinfo; | |
3496 | struct qeth_snmp_cmd *snmp; | |
3497 | unsigned char *data; | |
3498 | __u16 data_len; | |
3499 | ||
d11ba0c4 | 3500 | QETH_DBF_TEXT(TRACE, 3, "snpcmdcb"); |
4a71df50 FB |
3501 | |
3502 | cmd = (struct qeth_ipa_cmd *) sdata; | |
3503 | data = (unsigned char *)((char *)cmd - reply->offset); | |
3504 | qinfo = (struct qeth_arp_query_info *) reply->param; | |
3505 | snmp = &cmd->data.setadapterparms.data.snmp; | |
3506 | ||
3507 | if (cmd->hdr.return_code) { | |
d11ba0c4 | 3508 | QETH_DBF_TEXT_(TRACE, 4, "scer1%i", cmd->hdr.return_code); |
4a71df50 FB |
3509 | return 0; |
3510 | } | |
3511 | if (cmd->data.setadapterparms.hdr.return_code) { | |
3512 | cmd->hdr.return_code = | |
3513 | cmd->data.setadapterparms.hdr.return_code; | |
d11ba0c4 | 3514 | QETH_DBF_TEXT_(TRACE, 4, "scer2%i", cmd->hdr.return_code); |
4a71df50 FB |
3515 | return 0; |
3516 | } | |
3517 | data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data)); | |
3518 | if (cmd->data.setadapterparms.hdr.seq_no == 1) | |
3519 | data_len -= (__u16)((char *)&snmp->data - (char *)cmd); | |
3520 | else | |
3521 | data_len -= (__u16)((char *)&snmp->request - (char *)cmd); | |
3522 | ||
3523 | /* check if there is enough room in userspace */ | |
3524 | if ((qinfo->udata_len - qinfo->udata_offset) < data_len) { | |
d11ba0c4 | 3525 | QETH_DBF_TEXT_(TRACE, 4, "scer3%i", -ENOMEM); |
4a71df50 FB |
3526 | cmd->hdr.return_code = -ENOMEM; |
3527 | return 0; | |
3528 | } | |
d11ba0c4 | 3529 | QETH_DBF_TEXT_(TRACE, 4, "snore%i", |
4a71df50 | 3530 | cmd->data.setadapterparms.hdr.used_total); |
d11ba0c4 | 3531 | QETH_DBF_TEXT_(TRACE, 4, "sseqn%i", |
4a71df50 FB |
3532 | cmd->data.setadapterparms.hdr.seq_no); |
3533 | /*copy entries to user buffer*/ | |
3534 | if (cmd->data.setadapterparms.hdr.seq_no == 1) { | |
3535 | memcpy(qinfo->udata + qinfo->udata_offset, | |
3536 | (char *)snmp, | |
3537 | data_len + offsetof(struct qeth_snmp_cmd, data)); | |
3538 | qinfo->udata_offset += offsetof(struct qeth_snmp_cmd, data); | |
3539 | } else { | |
3540 | memcpy(qinfo->udata + qinfo->udata_offset, | |
3541 | (char *)&snmp->request, data_len); | |
3542 | } | |
3543 | qinfo->udata_offset += data_len; | |
3544 | /* check if all replies received ... */ | |
d11ba0c4 | 3545 | QETH_DBF_TEXT_(TRACE, 4, "srtot%i", |
4a71df50 | 3546 | cmd->data.setadapterparms.hdr.used_total); |
d11ba0c4 | 3547 | QETH_DBF_TEXT_(TRACE, 4, "srseq%i", |
4a71df50 FB |
3548 | cmd->data.setadapterparms.hdr.seq_no); |
3549 | if (cmd->data.setadapterparms.hdr.seq_no < | |
3550 | cmd->data.setadapterparms.hdr.used_total) | |
3551 | return 1; | |
3552 | return 0; | |
3553 | } | |
3554 | ||
3555 | int qeth_snmp_command(struct qeth_card *card, char __user *udata) | |
3556 | { | |
3557 | struct qeth_cmd_buffer *iob; | |
3558 | struct qeth_ipa_cmd *cmd; | |
3559 | struct qeth_snmp_ureq *ureq; | |
3560 | int req_len; | |
3561 | struct qeth_arp_query_info qinfo = {0, }; | |
3562 | int rc = 0; | |
3563 | ||
d11ba0c4 | 3564 | QETH_DBF_TEXT(TRACE, 3, "snmpcmd"); |
4a71df50 FB |
3565 | |
3566 | if (card->info.guestlan) | |
3567 | return -EOPNOTSUPP; | |
3568 | ||
3569 | if ((!qeth_adp_supported(card, IPA_SETADP_SET_SNMP_CONTROL)) && | |
3570 | (!card->options.layer2)) { | |
4a71df50 FB |
3571 | return -EOPNOTSUPP; |
3572 | } | |
3573 | /* skip 4 bytes (data_len struct member) to get req_len */ | |
3574 | if (copy_from_user(&req_len, udata + sizeof(int), sizeof(int))) | |
3575 | return -EFAULT; | |
3576 | ureq = kmalloc(req_len+sizeof(struct qeth_snmp_ureq_hdr), GFP_KERNEL); | |
3577 | if (!ureq) { | |
d11ba0c4 | 3578 | QETH_DBF_TEXT(TRACE, 2, "snmpnome"); |
4a71df50 FB |
3579 | return -ENOMEM; |
3580 | } | |
3581 | if (copy_from_user(ureq, udata, | |
3582 | req_len + sizeof(struct qeth_snmp_ureq_hdr))) { | |
3583 | kfree(ureq); | |
3584 | return -EFAULT; | |
3585 | } | |
3586 | qinfo.udata_len = ureq->hdr.data_len; | |
3587 | qinfo.udata = kzalloc(qinfo.udata_len, GFP_KERNEL); | |
3588 | if (!qinfo.udata) { | |
3589 | kfree(ureq); | |
3590 | return -ENOMEM; | |
3591 | } | |
3592 | qinfo.udata_offset = sizeof(struct qeth_snmp_ureq_hdr); | |
3593 | ||
3594 | iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_SNMP_CONTROL, | |
3595 | QETH_SNMP_SETADP_CMDLENGTH + req_len); | |
3596 | cmd = (struct qeth_ipa_cmd *)(iob->data+IPA_PDU_HEADER_SIZE); | |
3597 | memcpy(&cmd->data.setadapterparms.data.snmp, &ureq->cmd, req_len); | |
3598 | rc = qeth_send_ipa_snmp_cmd(card, iob, QETH_SETADP_BASE_LEN + req_len, | |
3599 | qeth_snmp_command_cb, (void *)&qinfo); | |
3600 | if (rc) | |
14cc21b6 | 3601 | QETH_DBF_MESSAGE(2, "SNMP command failed on %s: (0x%x)\n", |
4a71df50 FB |
3602 | QETH_CARD_IFNAME(card), rc); |
3603 | else { | |
3604 | if (copy_to_user(udata, qinfo.udata, qinfo.udata_len)) | |
3605 | rc = -EFAULT; | |
3606 | } | |
3607 | ||
3608 | kfree(ureq); | |
3609 | kfree(qinfo.udata); | |
3610 | return rc; | |
3611 | } | |
3612 | EXPORT_SYMBOL_GPL(qeth_snmp_command); | |
3613 | ||
3614 | static inline int qeth_get_qdio_q_format(struct qeth_card *card) | |
3615 | { | |
3616 | switch (card->info.type) { | |
3617 | case QETH_CARD_TYPE_IQD: | |
3618 | return 2; | |
3619 | default: | |
3620 | return 0; | |
3621 | } | |
3622 | } | |
3623 | ||
3624 | static int qeth_qdio_establish(struct qeth_card *card) | |
3625 | { | |
3626 | struct qdio_initialize init_data; | |
3627 | char *qib_param_field; | |
3628 | struct qdio_buffer **in_sbal_ptrs; | |
3629 | struct qdio_buffer **out_sbal_ptrs; | |
3630 | int i, j, k; | |
3631 | int rc = 0; | |
3632 | ||
d11ba0c4 | 3633 | QETH_DBF_TEXT(SETUP, 2, "qdioest"); |
4a71df50 FB |
3634 | |
3635 | qib_param_field = kzalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(char), | |
3636 | GFP_KERNEL); | |
3637 | if (!qib_param_field) | |
3638 | return -ENOMEM; | |
3639 | ||
3640 | qeth_create_qib_param_field(card, qib_param_field); | |
3641 | qeth_create_qib_param_field_blkt(card, qib_param_field); | |
3642 | ||
3643 | in_sbal_ptrs = kmalloc(QDIO_MAX_BUFFERS_PER_Q * sizeof(void *), | |
3644 | GFP_KERNEL); | |
3645 | if (!in_sbal_ptrs) { | |
3646 | kfree(qib_param_field); | |
3647 | return -ENOMEM; | |
3648 | } | |
3649 | for (i = 0; i < QDIO_MAX_BUFFERS_PER_Q; ++i) | |
3650 | in_sbal_ptrs[i] = (struct qdio_buffer *) | |
3651 | virt_to_phys(card->qdio.in_q->bufs[i].buffer); | |
3652 | ||
3653 | out_sbal_ptrs = | |
3654 | kmalloc(card->qdio.no_out_queues * QDIO_MAX_BUFFERS_PER_Q * | |
3655 | sizeof(void *), GFP_KERNEL); | |
3656 | if (!out_sbal_ptrs) { | |
3657 | kfree(in_sbal_ptrs); | |
3658 | kfree(qib_param_field); | |
3659 | return -ENOMEM; | |
3660 | } | |
3661 | for (i = 0, k = 0; i < card->qdio.no_out_queues; ++i) | |
3662 | for (j = 0; j < QDIO_MAX_BUFFERS_PER_Q; ++j, ++k) { | |
3663 | out_sbal_ptrs[k] = (struct qdio_buffer *)virt_to_phys( | |
3664 | card->qdio.out_qs[i]->bufs[j].buffer); | |
3665 | } | |
3666 | ||
3667 | memset(&init_data, 0, sizeof(struct qdio_initialize)); | |
3668 | init_data.cdev = CARD_DDEV(card); | |
3669 | init_data.q_format = qeth_get_qdio_q_format(card); | |
3670 | init_data.qib_param_field_format = 0; | |
3671 | init_data.qib_param_field = qib_param_field; | |
4a71df50 FB |
3672 | init_data.no_input_qs = 1; |
3673 | init_data.no_output_qs = card->qdio.no_out_queues; | |
3674 | init_data.input_handler = card->discipline.input_handler; | |
3675 | init_data.output_handler = card->discipline.output_handler; | |
3676 | init_data.int_parm = (unsigned long) card; | |
3677 | init_data.flags = QDIO_INBOUND_0COPY_SBALS | | |
3678 | QDIO_OUTBOUND_0COPY_SBALS | | |
3679 | QDIO_USE_OUTBOUND_PCIS; | |
3680 | init_data.input_sbal_addr_array = (void **) in_sbal_ptrs; | |
3681 | init_data.output_sbal_addr_array = (void **) out_sbal_ptrs; | |
3682 | ||
3683 | if (atomic_cmpxchg(&card->qdio.state, QETH_QDIO_ALLOCATED, | |
3684 | QETH_QDIO_ESTABLISHED) == QETH_QDIO_ALLOCATED) { | |
3685 | rc = qdio_initialize(&init_data); | |
3686 | if (rc) | |
3687 | atomic_set(&card->qdio.state, QETH_QDIO_ALLOCATED); | |
3688 | } | |
3689 | kfree(out_sbal_ptrs); | |
3690 | kfree(in_sbal_ptrs); | |
3691 | kfree(qib_param_field); | |
3692 | return rc; | |
3693 | } | |
3694 | ||
3695 | static void qeth_core_free_card(struct qeth_card *card) | |
3696 | { | |
3697 | ||
d11ba0c4 PT |
3698 | QETH_DBF_TEXT(SETUP, 2, "freecrd"); |
3699 | QETH_DBF_HEX(SETUP, 2, &card, sizeof(void *)); | |
4a71df50 FB |
3700 | qeth_clean_channel(&card->read); |
3701 | qeth_clean_channel(&card->write); | |
3702 | if (card->dev) | |
3703 | free_netdev(card->dev); | |
3704 | kfree(card->ip_tbd_list); | |
3705 | qeth_free_qdio_buffers(card); | |
6bcac508 | 3706 | unregister_service_level(&card->qeth_service_level); |
4a71df50 FB |
3707 | kfree(card); |
3708 | } | |
3709 | ||
3710 | static struct ccw_device_id qeth_ids[] = { | |
3711 | {CCW_DEVICE(0x1731, 0x01), .driver_info = QETH_CARD_TYPE_OSAE}, | |
3712 | {CCW_DEVICE(0x1731, 0x05), .driver_info = QETH_CARD_TYPE_IQD}, | |
3713 | {CCW_DEVICE(0x1731, 0x06), .driver_info = QETH_CARD_TYPE_OSN}, | |
3714 | {}, | |
3715 | }; | |
3716 | MODULE_DEVICE_TABLE(ccw, qeth_ids); | |
3717 | ||
3718 | static struct ccw_driver qeth_ccw_driver = { | |
3719 | .name = "qeth", | |
3720 | .ids = qeth_ids, | |
3721 | .probe = ccwgroup_probe_ccwdev, | |
3722 | .remove = ccwgroup_remove_ccwdev, | |
3723 | }; | |
3724 | ||
3725 | static int qeth_core_driver_group(const char *buf, struct device *root_dev, | |
3726 | unsigned long driver_id) | |
3727 | { | |
022b660a UB |
3728 | return ccwgroup_create_from_string(root_dev, driver_id, |
3729 | &qeth_ccw_driver, 3, buf); | |
4a71df50 FB |
3730 | } |
3731 | ||
3732 | int qeth_core_hardsetup_card(struct qeth_card *card) | |
3733 | { | |
bbd50e17 | 3734 | struct qdio_ssqd_desc *ssqd; |
4a71df50 | 3735 | int retries = 3; |
779e6e1c | 3736 | int mpno = 0; |
4a71df50 FB |
3737 | int rc; |
3738 | ||
d11ba0c4 | 3739 | QETH_DBF_TEXT(SETUP, 2, "hrdsetup"); |
4a71df50 FB |
3740 | atomic_set(&card->force_alloc_skb, 0); |
3741 | retry: | |
3742 | if (retries < 3) { | |
74eacdb9 FB |
3743 | QETH_DBF_MESSAGE(2, "%s Retrying to do IDX activates.\n", |
3744 | dev_name(&card->gdev->dev)); | |
4a71df50 FB |
3745 | ccw_device_set_offline(CARD_DDEV(card)); |
3746 | ccw_device_set_offline(CARD_WDEV(card)); | |
3747 | ccw_device_set_offline(CARD_RDEV(card)); | |
3748 | ccw_device_set_online(CARD_RDEV(card)); | |
3749 | ccw_device_set_online(CARD_WDEV(card)); | |
3750 | ccw_device_set_online(CARD_DDEV(card)); | |
3751 | } | |
3752 | rc = qeth_qdio_clear_card(card, card->info.type != QETH_CARD_TYPE_IQD); | |
3753 | if (rc == -ERESTARTSYS) { | |
d11ba0c4 | 3754 | QETH_DBF_TEXT(SETUP, 2, "break1"); |
4a71df50 FB |
3755 | return rc; |
3756 | } else if (rc) { | |
d11ba0c4 | 3757 | QETH_DBF_TEXT_(SETUP, 2, "1err%d", rc); |
4a71df50 FB |
3758 | if (--retries < 0) |
3759 | goto out; | |
3760 | else | |
3761 | goto retry; | |
3762 | } | |
3763 | ||
3764 | rc = qeth_get_unitaddr(card); | |
3765 | if (rc) { | |
d11ba0c4 | 3766 | QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); |
4a71df50 FB |
3767 | return rc; |
3768 | } | |
779e6e1c | 3769 | |
bbd50e17 JG |
3770 | ssqd = kmalloc(sizeof(struct qdio_ssqd_desc), GFP_KERNEL); |
3771 | if (!ssqd) { | |
3772 | rc = -ENOMEM; | |
3773 | goto out; | |
3774 | } | |
3775 | rc = qdio_get_ssqd_desc(CARD_DDEV(card), ssqd); | |
3776 | if (rc == 0) | |
3777 | mpno = ssqd->pcnt; | |
3778 | kfree(ssqd); | |
3779 | ||
a74b08c7 UB |
3780 | if (mpno) |
3781 | mpno = min(mpno - 1, QETH_MAX_PORTNO); | |
4a71df50 | 3782 | if (card->info.portno > mpno) { |
14cc21b6 FB |
3783 | QETH_DBF_MESSAGE(2, "Device %s does not offer port number %d" |
3784 | "\n.", CARD_BUS_ID(card), card->info.portno); | |
4a71df50 FB |
3785 | rc = -ENODEV; |
3786 | goto out; | |
3787 | } | |
3788 | qeth_init_tokens(card); | |
3789 | qeth_init_func_level(card); | |
3790 | rc = qeth_idx_activate_channel(&card->read, qeth_idx_read_cb); | |
3791 | if (rc == -ERESTARTSYS) { | |
d11ba0c4 | 3792 | QETH_DBF_TEXT(SETUP, 2, "break2"); |
4a71df50 FB |
3793 | return rc; |
3794 | } else if (rc) { | |
d11ba0c4 | 3795 | QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); |
4a71df50 FB |
3796 | if (--retries < 0) |
3797 | goto out; | |
3798 | else | |
3799 | goto retry; | |
3800 | } | |
3801 | rc = qeth_idx_activate_channel(&card->write, qeth_idx_write_cb); | |
3802 | if (rc == -ERESTARTSYS) { | |
d11ba0c4 | 3803 | QETH_DBF_TEXT(SETUP, 2, "break3"); |
4a71df50 FB |
3804 | return rc; |
3805 | } else if (rc) { | |
d11ba0c4 | 3806 | QETH_DBF_TEXT_(SETUP, 2, "4err%d", rc); |
4a71df50 FB |
3807 | if (--retries < 0) |
3808 | goto out; | |
3809 | else | |
3810 | goto retry; | |
3811 | } | |
3812 | rc = qeth_mpc_initialize(card); | |
3813 | if (rc) { | |
d11ba0c4 | 3814 | QETH_DBF_TEXT_(SETUP, 2, "5err%d", rc); |
4a71df50 FB |
3815 | goto out; |
3816 | } | |
3817 | return 0; | |
3818 | out: | |
74eacdb9 FB |
3819 | dev_warn(&card->gdev->dev, "The qeth device driver failed to recover " |
3820 | "an error on the device\n"); | |
3821 | QETH_DBF_MESSAGE(2, "%s Initialization in hardsetup failed! rc=%d\n", | |
3822 | dev_name(&card->gdev->dev), rc); | |
4a71df50 FB |
3823 | return rc; |
3824 | } | |
3825 | EXPORT_SYMBOL_GPL(qeth_core_hardsetup_card); | |
3826 | ||
3827 | static inline int qeth_create_skb_frag(struct qdio_buffer_element *element, | |
3828 | struct sk_buff **pskb, int offset, int *pfrag, int data_len) | |
3829 | { | |
3830 | struct page *page = virt_to_page(element->addr); | |
3831 | if (*pskb == NULL) { | |
3832 | /* the upper protocol layers assume that there is data in the | |
3833 | * skb itself. Copy a small amount (64 bytes) to make them | |
3834 | * happy. */ | |
3835 | *pskb = dev_alloc_skb(64 + ETH_HLEN); | |
3836 | if (!(*pskb)) | |
3837 | return -ENOMEM; | |
3838 | skb_reserve(*pskb, ETH_HLEN); | |
3839 | if (data_len <= 64) { | |
3840 | memcpy(skb_put(*pskb, data_len), element->addr + offset, | |
3841 | data_len); | |
3842 | } else { | |
3843 | get_page(page); | |
3844 | memcpy(skb_put(*pskb, 64), element->addr + offset, 64); | |
3845 | skb_fill_page_desc(*pskb, *pfrag, page, offset + 64, | |
3846 | data_len - 64); | |
3847 | (*pskb)->data_len += data_len - 64; | |
3848 | (*pskb)->len += data_len - 64; | |
3849 | (*pskb)->truesize += data_len - 64; | |
3850 | (*pfrag)++; | |
3851 | } | |
3852 | } else { | |
3853 | get_page(page); | |
3854 | skb_fill_page_desc(*pskb, *pfrag, page, offset, data_len); | |
3855 | (*pskb)->data_len += data_len; | |
3856 | (*pskb)->len += data_len; | |
3857 | (*pskb)->truesize += data_len; | |
3858 | (*pfrag)++; | |
3859 | } | |
3860 | return 0; | |
3861 | } | |
3862 | ||
3863 | struct sk_buff *qeth_core_get_next_skb(struct qeth_card *card, | |
3864 | struct qdio_buffer *buffer, | |
3865 | struct qdio_buffer_element **__element, int *__offset, | |
3866 | struct qeth_hdr **hdr) | |
3867 | { | |
3868 | struct qdio_buffer_element *element = *__element; | |
3869 | int offset = *__offset; | |
3870 | struct sk_buff *skb = NULL; | |
3871 | int skb_len; | |
3872 | void *data_ptr; | |
3873 | int data_len; | |
3874 | int headroom = 0; | |
3875 | int use_rx_sg = 0; | |
3876 | int frag = 0; | |
3877 | ||
4a71df50 FB |
3878 | /* qeth_hdr must not cross element boundaries */ |
3879 | if (element->length < offset + sizeof(struct qeth_hdr)) { | |
3880 | if (qeth_is_last_sbale(element)) | |
3881 | return NULL; | |
3882 | element++; | |
3883 | offset = 0; | |
3884 | if (element->length < sizeof(struct qeth_hdr)) | |
3885 | return NULL; | |
3886 | } | |
3887 | *hdr = element->addr + offset; | |
3888 | ||
3889 | offset += sizeof(struct qeth_hdr); | |
3890 | if (card->options.layer2) { | |
3891 | if (card->info.type == QETH_CARD_TYPE_OSN) { | |
3892 | skb_len = (*hdr)->hdr.osn.pdu_length; | |
3893 | headroom = sizeof(struct qeth_hdr); | |
3894 | } else { | |
3895 | skb_len = (*hdr)->hdr.l2.pkt_length; | |
3896 | } | |
3897 | } else { | |
3898 | skb_len = (*hdr)->hdr.l3.length; | |
b403e685 FB |
3899 | if ((card->info.link_type == QETH_LINK_TYPE_LANE_TR) || |
3900 | (card->info.link_type == QETH_LINK_TYPE_HSTR)) | |
3901 | headroom = TR_HLEN; | |
3902 | else | |
3903 | headroom = ETH_HLEN; | |
4a71df50 FB |
3904 | } |
3905 | ||
3906 | if (!skb_len) | |
3907 | return NULL; | |
3908 | ||
3909 | if ((skb_len >= card->options.rx_sg_cb) && | |
3910 | (!(card->info.type == QETH_CARD_TYPE_OSN)) && | |
3911 | (!atomic_read(&card->force_alloc_skb))) { | |
3912 | use_rx_sg = 1; | |
3913 | } else { | |
3914 | skb = dev_alloc_skb(skb_len + headroom); | |
3915 | if (!skb) | |
3916 | goto no_mem; | |
3917 | if (headroom) | |
3918 | skb_reserve(skb, headroom); | |
3919 | } | |
3920 | ||
3921 | data_ptr = element->addr + offset; | |
3922 | while (skb_len) { | |
3923 | data_len = min(skb_len, (int)(element->length - offset)); | |
3924 | if (data_len) { | |
3925 | if (use_rx_sg) { | |
3926 | if (qeth_create_skb_frag(element, &skb, offset, | |
3927 | &frag, data_len)) | |
3928 | goto no_mem; | |
3929 | } else { | |
3930 | memcpy(skb_put(skb, data_len), data_ptr, | |
3931 | data_len); | |
3932 | } | |
3933 | } | |
3934 | skb_len -= data_len; | |
3935 | if (skb_len) { | |
3936 | if (qeth_is_last_sbale(element)) { | |
d11ba0c4 PT |
3937 | QETH_DBF_TEXT(TRACE, 4, "unexeob"); |
3938 | QETH_DBF_TEXT_(TRACE, 4, "%s", | |
4a71df50 | 3939 | CARD_BUS_ID(card)); |
d11ba0c4 PT |
3940 | QETH_DBF_TEXT(QERR, 2, "unexeob"); |
3941 | QETH_DBF_TEXT_(QERR, 2, "%s", | |
4a71df50 | 3942 | CARD_BUS_ID(card)); |
d11ba0c4 | 3943 | QETH_DBF_HEX(MISC, 4, buffer, sizeof(*buffer)); |
4a71df50 FB |
3944 | dev_kfree_skb_any(skb); |
3945 | card->stats.rx_errors++; | |
3946 | return NULL; | |
3947 | } | |
3948 | element++; | |
3949 | offset = 0; | |
3950 | data_ptr = element->addr; | |
3951 | } else { | |
3952 | offset += data_len; | |
3953 | } | |
3954 | } | |
3955 | *__element = element; | |
3956 | *__offset = offset; | |
3957 | if (use_rx_sg && card->options.performance_stats) { | |
3958 | card->perf_stats.sg_skbs_rx++; | |
3959 | card->perf_stats.sg_frags_rx += skb_shinfo(skb)->nr_frags; | |
3960 | } | |
3961 | return skb; | |
3962 | no_mem: | |
3963 | if (net_ratelimit()) { | |
d11ba0c4 PT |
3964 | QETH_DBF_TEXT(TRACE, 2, "noskbmem"); |
3965 | QETH_DBF_TEXT_(TRACE, 2, "%s", CARD_BUS_ID(card)); | |
4a71df50 FB |
3966 | } |
3967 | card->stats.rx_dropped++; | |
3968 | return NULL; | |
3969 | } | |
3970 | EXPORT_SYMBOL_GPL(qeth_core_get_next_skb); | |
3971 | ||
3972 | static void qeth_unregister_dbf_views(void) | |
3973 | { | |
d11ba0c4 PT |
3974 | int x; |
3975 | for (x = 0; x < QETH_DBF_INFOS; x++) { | |
3976 | debug_unregister(qeth_dbf[x].id); | |
3977 | qeth_dbf[x].id = NULL; | |
3978 | } | |
4a71df50 FB |
3979 | } |
3980 | ||
345aa66e | 3981 | void qeth_dbf_longtext(enum qeth_dbf_names dbf_nix, int level, char *fmt, ...) |
cd023216 PT |
3982 | { |
3983 | char dbf_txt_buf[32]; | |
345aa66e | 3984 | va_list args; |
cd023216 PT |
3985 | |
3986 | if (level > (qeth_dbf[dbf_nix].id)->level) | |
3987 | return; | |
345aa66e PT |
3988 | va_start(args, fmt); |
3989 | vsnprintf(dbf_txt_buf, sizeof(dbf_txt_buf), fmt, args); | |
3990 | va_end(args); | |
cd023216 | 3991 | debug_text_event(qeth_dbf[dbf_nix].id, level, dbf_txt_buf); |
cd023216 PT |
3992 | } |
3993 | EXPORT_SYMBOL_GPL(qeth_dbf_longtext); | |
3994 | ||
4a71df50 FB |
3995 | static int qeth_register_dbf_views(void) |
3996 | { | |
d11ba0c4 PT |
3997 | int ret; |
3998 | int x; | |
3999 | ||
4000 | for (x = 0; x < QETH_DBF_INFOS; x++) { | |
4001 | /* register the areas */ | |
4002 | qeth_dbf[x].id = debug_register(qeth_dbf[x].name, | |
4003 | qeth_dbf[x].pages, | |
4004 | qeth_dbf[x].areas, | |
4005 | qeth_dbf[x].len); | |
4006 | if (qeth_dbf[x].id == NULL) { | |
4007 | qeth_unregister_dbf_views(); | |
4008 | return -ENOMEM; | |
4009 | } | |
4a71df50 | 4010 | |
d11ba0c4 PT |
4011 | /* register a view */ |
4012 | ret = debug_register_view(qeth_dbf[x].id, qeth_dbf[x].view); | |
4013 | if (ret) { | |
4014 | qeth_unregister_dbf_views(); | |
4015 | return ret; | |
4016 | } | |
4a71df50 | 4017 | |
d11ba0c4 PT |
4018 | /* set a passing level */ |
4019 | debug_set_level(qeth_dbf[x].id, qeth_dbf[x].level); | |
4020 | } | |
4a71df50 FB |
4021 | |
4022 | return 0; | |
4023 | } | |
4024 | ||
4025 | int qeth_core_load_discipline(struct qeth_card *card, | |
4026 | enum qeth_discipline_id discipline) | |
4027 | { | |
4028 | int rc = 0; | |
4029 | switch (discipline) { | |
4030 | case QETH_DISCIPLINE_LAYER3: | |
4031 | card->discipline.ccwgdriver = try_then_request_module( | |
4032 | symbol_get(qeth_l3_ccwgroup_driver), | |
4033 | "qeth_l3"); | |
4034 | break; | |
4035 | case QETH_DISCIPLINE_LAYER2: | |
4036 | card->discipline.ccwgdriver = try_then_request_module( | |
4037 | symbol_get(qeth_l2_ccwgroup_driver), | |
4038 | "qeth_l2"); | |
4039 | break; | |
4040 | } | |
4041 | if (!card->discipline.ccwgdriver) { | |
74eacdb9 FB |
4042 | dev_err(&card->gdev->dev, "There is no kernel module to " |
4043 | "support discipline %d\n", discipline); | |
4a71df50 FB |
4044 | rc = -EINVAL; |
4045 | } | |
4046 | return rc; | |
4047 | } | |
4048 | ||
4049 | void qeth_core_free_discipline(struct qeth_card *card) | |
4050 | { | |
4051 | if (card->options.layer2) | |
4052 | symbol_put(qeth_l2_ccwgroup_driver); | |
4053 | else | |
4054 | symbol_put(qeth_l3_ccwgroup_driver); | |
4055 | card->discipline.ccwgdriver = NULL; | |
4056 | } | |
4057 | ||
4058 | static int qeth_core_probe_device(struct ccwgroup_device *gdev) | |
4059 | { | |
4060 | struct qeth_card *card; | |
4061 | struct device *dev; | |
4062 | int rc; | |
4063 | unsigned long flags; | |
4064 | ||
d11ba0c4 | 4065 | QETH_DBF_TEXT(SETUP, 2, "probedev"); |
4a71df50 FB |
4066 | |
4067 | dev = &gdev->dev; | |
4068 | if (!get_device(dev)) | |
4069 | return -ENODEV; | |
4070 | ||
2a0217d5 | 4071 | QETH_DBF_TEXT_(SETUP, 2, "%s", dev_name(&gdev->dev)); |
4a71df50 FB |
4072 | |
4073 | card = qeth_alloc_card(); | |
4074 | if (!card) { | |
d11ba0c4 | 4075 | QETH_DBF_TEXT_(SETUP, 2, "1err%d", -ENOMEM); |
4a71df50 FB |
4076 | rc = -ENOMEM; |
4077 | goto err_dev; | |
4078 | } | |
4079 | card->read.ccwdev = gdev->cdev[0]; | |
4080 | card->write.ccwdev = gdev->cdev[1]; | |
4081 | card->data.ccwdev = gdev->cdev[2]; | |
4082 | dev_set_drvdata(&gdev->dev, card); | |
4083 | card->gdev = gdev; | |
4084 | gdev->cdev[0]->handler = qeth_irq; | |
4085 | gdev->cdev[1]->handler = qeth_irq; | |
4086 | gdev->cdev[2]->handler = qeth_irq; | |
4087 | ||
4088 | rc = qeth_determine_card_type(card); | |
4089 | if (rc) { | |
d11ba0c4 | 4090 | QETH_DBF_TEXT_(SETUP, 2, "3err%d", rc); |
4a71df50 FB |
4091 | goto err_card; |
4092 | } | |
4093 | rc = qeth_setup_card(card); | |
4094 | if (rc) { | |
d11ba0c4 | 4095 | QETH_DBF_TEXT_(SETUP, 2, "2err%d", rc); |
4a71df50 FB |
4096 | goto err_card; |
4097 | } | |
4098 | ||
4099 | if (card->info.type == QETH_CARD_TYPE_OSN) { | |
4100 | rc = qeth_core_create_osn_attributes(dev); | |
4101 | if (rc) | |
4102 | goto err_card; | |
4103 | rc = qeth_core_load_discipline(card, QETH_DISCIPLINE_LAYER2); | |
4104 | if (rc) { | |
4105 | qeth_core_remove_osn_attributes(dev); | |
4106 | goto err_card; | |
4107 | } | |
4108 | rc = card->discipline.ccwgdriver->probe(card->gdev); | |
4109 | if (rc) { | |
4110 | qeth_core_free_discipline(card); | |
4111 | qeth_core_remove_osn_attributes(dev); | |
4112 | goto err_card; | |
4113 | } | |
4114 | } else { | |
4115 | rc = qeth_core_create_device_attributes(dev); | |
4116 | if (rc) | |
4117 | goto err_card; | |
4118 | } | |
4119 | ||
4120 | write_lock_irqsave(&qeth_core_card_list.rwlock, flags); | |
4121 | list_add_tail(&card->list, &qeth_core_card_list.list); | |
4122 | write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); | |
4123 | return 0; | |
4124 | ||
4125 | err_card: | |
4126 | qeth_core_free_card(card); | |
4127 | err_dev: | |
4128 | put_device(dev); | |
4129 | return rc; | |
4130 | } | |
4131 | ||
4132 | static void qeth_core_remove_device(struct ccwgroup_device *gdev) | |
4133 | { | |
4134 | unsigned long flags; | |
4135 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4136 | ||
28a7e4c9 | 4137 | QETH_DBF_TEXT(SETUP, 2, "removedv"); |
4a71df50 FB |
4138 | if (card->discipline.ccwgdriver) { |
4139 | card->discipline.ccwgdriver->remove(gdev); | |
4140 | qeth_core_free_discipline(card); | |
4141 | } | |
4142 | ||
4143 | if (card->info.type == QETH_CARD_TYPE_OSN) { | |
4144 | qeth_core_remove_osn_attributes(&gdev->dev); | |
4145 | } else { | |
4146 | qeth_core_remove_device_attributes(&gdev->dev); | |
4147 | } | |
4148 | write_lock_irqsave(&qeth_core_card_list.rwlock, flags); | |
4149 | list_del(&card->list); | |
4150 | write_unlock_irqrestore(&qeth_core_card_list.rwlock, flags); | |
4151 | qeth_core_free_card(card); | |
4152 | dev_set_drvdata(&gdev->dev, NULL); | |
4153 | put_device(&gdev->dev); | |
4154 | return; | |
4155 | } | |
4156 | ||
4157 | static int qeth_core_set_online(struct ccwgroup_device *gdev) | |
4158 | { | |
4159 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4160 | int rc = 0; | |
4161 | int def_discipline; | |
4162 | ||
4163 | if (!card->discipline.ccwgdriver) { | |
4164 | if (card->info.type == QETH_CARD_TYPE_IQD) | |
4165 | def_discipline = QETH_DISCIPLINE_LAYER3; | |
4166 | else | |
4167 | def_discipline = QETH_DISCIPLINE_LAYER2; | |
4168 | rc = qeth_core_load_discipline(card, def_discipline); | |
4169 | if (rc) | |
4170 | goto err; | |
4171 | rc = card->discipline.ccwgdriver->probe(card->gdev); | |
4172 | if (rc) | |
4173 | goto err; | |
4174 | } | |
4175 | rc = card->discipline.ccwgdriver->set_online(gdev); | |
4176 | err: | |
4177 | return rc; | |
4178 | } | |
4179 | ||
4180 | static int qeth_core_set_offline(struct ccwgroup_device *gdev) | |
4181 | { | |
4182 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4183 | return card->discipline.ccwgdriver->set_offline(gdev); | |
4184 | } | |
4185 | ||
4186 | static void qeth_core_shutdown(struct ccwgroup_device *gdev) | |
4187 | { | |
4188 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4189 | if (card->discipline.ccwgdriver && | |
4190 | card->discipline.ccwgdriver->shutdown) | |
4191 | card->discipline.ccwgdriver->shutdown(gdev); | |
4192 | } | |
4193 | ||
bbcfcdc8 FB |
4194 | static int qeth_core_prepare(struct ccwgroup_device *gdev) |
4195 | { | |
4196 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4197 | if (card->discipline.ccwgdriver && | |
4198 | card->discipline.ccwgdriver->prepare) | |
4199 | return card->discipline.ccwgdriver->prepare(gdev); | |
4200 | return 0; | |
4201 | } | |
4202 | ||
4203 | static void qeth_core_complete(struct ccwgroup_device *gdev) | |
4204 | { | |
4205 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4206 | if (card->discipline.ccwgdriver && | |
4207 | card->discipline.ccwgdriver->complete) | |
4208 | card->discipline.ccwgdriver->complete(gdev); | |
4209 | } | |
4210 | ||
4211 | static int qeth_core_freeze(struct ccwgroup_device *gdev) | |
4212 | { | |
4213 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4214 | if (card->discipline.ccwgdriver && | |
4215 | card->discipline.ccwgdriver->freeze) | |
4216 | return card->discipline.ccwgdriver->freeze(gdev); | |
4217 | return 0; | |
4218 | } | |
4219 | ||
4220 | static int qeth_core_thaw(struct ccwgroup_device *gdev) | |
4221 | { | |
4222 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4223 | if (card->discipline.ccwgdriver && | |
4224 | card->discipline.ccwgdriver->thaw) | |
4225 | return card->discipline.ccwgdriver->thaw(gdev); | |
4226 | return 0; | |
4227 | } | |
4228 | ||
4229 | static int qeth_core_restore(struct ccwgroup_device *gdev) | |
4230 | { | |
4231 | struct qeth_card *card = dev_get_drvdata(&gdev->dev); | |
4232 | if (card->discipline.ccwgdriver && | |
4233 | card->discipline.ccwgdriver->restore) | |
4234 | return card->discipline.ccwgdriver->restore(gdev); | |
4235 | return 0; | |
4236 | } | |
4237 | ||
4a71df50 FB |
4238 | static struct ccwgroup_driver qeth_core_ccwgroup_driver = { |
4239 | .owner = THIS_MODULE, | |
4240 | .name = "qeth", | |
4241 | .driver_id = 0xD8C5E3C8, | |
4242 | .probe = qeth_core_probe_device, | |
4243 | .remove = qeth_core_remove_device, | |
4244 | .set_online = qeth_core_set_online, | |
4245 | .set_offline = qeth_core_set_offline, | |
4246 | .shutdown = qeth_core_shutdown, | |
bbcfcdc8 FB |
4247 | .prepare = qeth_core_prepare, |
4248 | .complete = qeth_core_complete, | |
4249 | .freeze = qeth_core_freeze, | |
4250 | .thaw = qeth_core_thaw, | |
4251 | .restore = qeth_core_restore, | |
4a71df50 FB |
4252 | }; |
4253 | ||
4254 | static ssize_t | |
4255 | qeth_core_driver_group_store(struct device_driver *ddrv, const char *buf, | |
4256 | size_t count) | |
4257 | { | |
4258 | int err; | |
4259 | err = qeth_core_driver_group(buf, qeth_core_root_dev, | |
4260 | qeth_core_ccwgroup_driver.driver_id); | |
4261 | if (err) | |
4262 | return err; | |
4263 | else | |
4264 | return count; | |
4265 | } | |
4266 | ||
4267 | static DRIVER_ATTR(group, 0200, NULL, qeth_core_driver_group_store); | |
4268 | ||
4269 | static struct { | |
4270 | const char str[ETH_GSTRING_LEN]; | |
4271 | } qeth_ethtool_stats_keys[] = { | |
4272 | /* 0 */{"rx skbs"}, | |
4273 | {"rx buffers"}, | |
4274 | {"tx skbs"}, | |
4275 | {"tx buffers"}, | |
4276 | {"tx skbs no packing"}, | |
4277 | {"tx buffers no packing"}, | |
4278 | {"tx skbs packing"}, | |
4279 | {"tx buffers packing"}, | |
4280 | {"tx sg skbs"}, | |
4281 | {"tx sg frags"}, | |
4282 | /* 10 */{"rx sg skbs"}, | |
4283 | {"rx sg frags"}, | |
4284 | {"rx sg page allocs"}, | |
4285 | {"tx large kbytes"}, | |
4286 | {"tx large count"}, | |
4287 | {"tx pk state ch n->p"}, | |
4288 | {"tx pk state ch p->n"}, | |
4289 | {"tx pk watermark low"}, | |
4290 | {"tx pk watermark high"}, | |
4291 | {"queue 0 buffer usage"}, | |
4292 | /* 20 */{"queue 1 buffer usage"}, | |
4293 | {"queue 2 buffer usage"}, | |
4294 | {"queue 3 buffer usage"}, | |
4295 | {"rx handler time"}, | |
4296 | {"rx handler count"}, | |
4297 | {"rx do_QDIO time"}, | |
4298 | {"rx do_QDIO count"}, | |
4299 | {"tx handler time"}, | |
4300 | {"tx handler count"}, | |
4301 | {"tx time"}, | |
4302 | /* 30 */{"tx count"}, | |
4303 | {"tx do_QDIO time"}, | |
4304 | {"tx do_QDIO count"}, | |
f61a0d05 | 4305 | {"tx csum"}, |
4a71df50 FB |
4306 | }; |
4307 | ||
4308 | int qeth_core_get_stats_count(struct net_device *dev) | |
4309 | { | |
4310 | return (sizeof(qeth_ethtool_stats_keys) / ETH_GSTRING_LEN); | |
4311 | } | |
4312 | EXPORT_SYMBOL_GPL(qeth_core_get_stats_count); | |
4313 | ||
4314 | void qeth_core_get_ethtool_stats(struct net_device *dev, | |
4315 | struct ethtool_stats *stats, u64 *data) | |
4316 | { | |
509e2562 | 4317 | struct qeth_card *card = dev->ml_priv; |
4a71df50 FB |
4318 | data[0] = card->stats.rx_packets - |
4319 | card->perf_stats.initial_rx_packets; | |
4320 | data[1] = card->perf_stats.bufs_rec; | |
4321 | data[2] = card->stats.tx_packets - | |
4322 | card->perf_stats.initial_tx_packets; | |
4323 | data[3] = card->perf_stats.bufs_sent; | |
4324 | data[4] = card->stats.tx_packets - card->perf_stats.initial_tx_packets | |
4325 | - card->perf_stats.skbs_sent_pack; | |
4326 | data[5] = card->perf_stats.bufs_sent - card->perf_stats.bufs_sent_pack; | |
4327 | data[6] = card->perf_stats.skbs_sent_pack; | |
4328 | data[7] = card->perf_stats.bufs_sent_pack; | |
4329 | data[8] = card->perf_stats.sg_skbs_sent; | |
4330 | data[9] = card->perf_stats.sg_frags_sent; | |
4331 | data[10] = card->perf_stats.sg_skbs_rx; | |
4332 | data[11] = card->perf_stats.sg_frags_rx; | |
4333 | data[12] = card->perf_stats.sg_alloc_page_rx; | |
4334 | data[13] = (card->perf_stats.large_send_bytes >> 10); | |
4335 | data[14] = card->perf_stats.large_send_cnt; | |
4336 | data[15] = card->perf_stats.sc_dp_p; | |
4337 | data[16] = card->perf_stats.sc_p_dp; | |
4338 | data[17] = QETH_LOW_WATERMARK_PACK; | |
4339 | data[18] = QETH_HIGH_WATERMARK_PACK; | |
4340 | data[19] = atomic_read(&card->qdio.out_qs[0]->used_buffers); | |
4341 | data[20] = (card->qdio.no_out_queues > 1) ? | |
4342 | atomic_read(&card->qdio.out_qs[1]->used_buffers) : 0; | |
4343 | data[21] = (card->qdio.no_out_queues > 2) ? | |
4344 | atomic_read(&card->qdio.out_qs[2]->used_buffers) : 0; | |
4345 | data[22] = (card->qdio.no_out_queues > 3) ? | |
4346 | atomic_read(&card->qdio.out_qs[3]->used_buffers) : 0; | |
4347 | data[23] = card->perf_stats.inbound_time; | |
4348 | data[24] = card->perf_stats.inbound_cnt; | |
4349 | data[25] = card->perf_stats.inbound_do_qdio_time; | |
4350 | data[26] = card->perf_stats.inbound_do_qdio_cnt; | |
4351 | data[27] = card->perf_stats.outbound_handler_time; | |
4352 | data[28] = card->perf_stats.outbound_handler_cnt; | |
4353 | data[29] = card->perf_stats.outbound_time; | |
4354 | data[30] = card->perf_stats.outbound_cnt; | |
4355 | data[31] = card->perf_stats.outbound_do_qdio_time; | |
4356 | data[32] = card->perf_stats.outbound_do_qdio_cnt; | |
f61a0d05 | 4357 | data[33] = card->perf_stats.tx_csum; |
4a71df50 FB |
4358 | } |
4359 | EXPORT_SYMBOL_GPL(qeth_core_get_ethtool_stats); | |
4360 | ||
4361 | void qeth_core_get_strings(struct net_device *dev, u32 stringset, u8 *data) | |
4362 | { | |
4363 | switch (stringset) { | |
4364 | case ETH_SS_STATS: | |
4365 | memcpy(data, &qeth_ethtool_stats_keys, | |
4366 | sizeof(qeth_ethtool_stats_keys)); | |
4367 | break; | |
4368 | default: | |
4369 | WARN_ON(1); | |
4370 | break; | |
4371 | } | |
4372 | } | |
4373 | EXPORT_SYMBOL_GPL(qeth_core_get_strings); | |
4374 | ||
4375 | void qeth_core_get_drvinfo(struct net_device *dev, | |
4376 | struct ethtool_drvinfo *info) | |
4377 | { | |
509e2562 | 4378 | struct qeth_card *card = dev->ml_priv; |
4a71df50 FB |
4379 | if (card->options.layer2) |
4380 | strcpy(info->driver, "qeth_l2"); | |
4381 | else | |
4382 | strcpy(info->driver, "qeth_l3"); | |
4383 | ||
4384 | strcpy(info->version, "1.0"); | |
4385 | strcpy(info->fw_version, card->info.mcl_level); | |
4386 | sprintf(info->bus_info, "%s/%s/%s", | |
4387 | CARD_RDEV_ID(card), | |
4388 | CARD_WDEV_ID(card), | |
4389 | CARD_DDEV_ID(card)); | |
4390 | } | |
4391 | EXPORT_SYMBOL_GPL(qeth_core_get_drvinfo); | |
4392 | ||
3f9975aa FB |
4393 | int qeth_core_ethtool_get_settings(struct net_device *netdev, |
4394 | struct ethtool_cmd *ecmd) | |
4395 | { | |
509e2562 | 4396 | struct qeth_card *card = netdev->ml_priv; |
3f9975aa FB |
4397 | enum qeth_link_types link_type; |
4398 | ||
4399 | if ((card->info.type == QETH_CARD_TYPE_IQD) || (card->info.guestlan)) | |
4400 | link_type = QETH_LINK_TYPE_10GBIT_ETH; | |
4401 | else | |
4402 | link_type = card->info.link_type; | |
4403 | ||
4404 | ecmd->transceiver = XCVR_INTERNAL; | |
4405 | ecmd->supported = SUPPORTED_Autoneg; | |
4406 | ecmd->advertising = ADVERTISED_Autoneg; | |
4407 | ecmd->duplex = DUPLEX_FULL; | |
4408 | ecmd->autoneg = AUTONEG_ENABLE; | |
4409 | ||
4410 | switch (link_type) { | |
4411 | case QETH_LINK_TYPE_FAST_ETH: | |
4412 | case QETH_LINK_TYPE_LANE_ETH100: | |
4413 | ecmd->supported |= SUPPORTED_10baseT_Half | | |
4414 | SUPPORTED_10baseT_Full | | |
4415 | SUPPORTED_100baseT_Half | | |
4416 | SUPPORTED_100baseT_Full | | |
4417 | SUPPORTED_TP; | |
4418 | ecmd->advertising |= ADVERTISED_10baseT_Half | | |
4419 | ADVERTISED_10baseT_Full | | |
4420 | ADVERTISED_100baseT_Half | | |
4421 | ADVERTISED_100baseT_Full | | |
4422 | ADVERTISED_TP; | |
4423 | ecmd->speed = SPEED_100; | |
4424 | ecmd->port = PORT_TP; | |
4425 | break; | |
4426 | ||
4427 | case QETH_LINK_TYPE_GBIT_ETH: | |
4428 | case QETH_LINK_TYPE_LANE_ETH1000: | |
4429 | ecmd->supported |= SUPPORTED_10baseT_Half | | |
4430 | SUPPORTED_10baseT_Full | | |
4431 | SUPPORTED_100baseT_Half | | |
4432 | SUPPORTED_100baseT_Full | | |
4433 | SUPPORTED_1000baseT_Half | | |
4434 | SUPPORTED_1000baseT_Full | | |
4435 | SUPPORTED_FIBRE; | |
4436 | ecmd->advertising |= ADVERTISED_10baseT_Half | | |
4437 | ADVERTISED_10baseT_Full | | |
4438 | ADVERTISED_100baseT_Half | | |
4439 | ADVERTISED_100baseT_Full | | |
4440 | ADVERTISED_1000baseT_Half | | |
4441 | ADVERTISED_1000baseT_Full | | |
4442 | ADVERTISED_FIBRE; | |
4443 | ecmd->speed = SPEED_1000; | |
4444 | ecmd->port = PORT_FIBRE; | |
4445 | break; | |
4446 | ||
4447 | case QETH_LINK_TYPE_10GBIT_ETH: | |
4448 | ecmd->supported |= SUPPORTED_10baseT_Half | | |
4449 | SUPPORTED_10baseT_Full | | |
4450 | SUPPORTED_100baseT_Half | | |
4451 | SUPPORTED_100baseT_Full | | |
4452 | SUPPORTED_1000baseT_Half | | |
4453 | SUPPORTED_1000baseT_Full | | |
4454 | SUPPORTED_10000baseT_Full | | |
4455 | SUPPORTED_FIBRE; | |
4456 | ecmd->advertising |= ADVERTISED_10baseT_Half | | |
4457 | ADVERTISED_10baseT_Full | | |
4458 | ADVERTISED_100baseT_Half | | |
4459 | ADVERTISED_100baseT_Full | | |
4460 | ADVERTISED_1000baseT_Half | | |
4461 | ADVERTISED_1000baseT_Full | | |
4462 | ADVERTISED_10000baseT_Full | | |
4463 | ADVERTISED_FIBRE; | |
4464 | ecmd->speed = SPEED_10000; | |
4465 | ecmd->port = PORT_FIBRE; | |
4466 | break; | |
4467 | ||
4468 | default: | |
4469 | ecmd->supported |= SUPPORTED_10baseT_Half | | |
4470 | SUPPORTED_10baseT_Full | | |
4471 | SUPPORTED_TP; | |
4472 | ecmd->advertising |= ADVERTISED_10baseT_Half | | |
4473 | ADVERTISED_10baseT_Full | | |
4474 | ADVERTISED_TP; | |
4475 | ecmd->speed = SPEED_10; | |
4476 | ecmd->port = PORT_TP; | |
4477 | } | |
4478 | ||
4479 | return 0; | |
4480 | } | |
4481 | EXPORT_SYMBOL_GPL(qeth_core_ethtool_get_settings); | |
4482 | ||
4a71df50 FB |
4483 | static int __init qeth_core_init(void) |
4484 | { | |
4485 | int rc; | |
4486 | ||
74eacdb9 | 4487 | pr_info("loading core functions\n"); |
4a71df50 FB |
4488 | INIT_LIST_HEAD(&qeth_core_card_list.list); |
4489 | rwlock_init(&qeth_core_card_list.rwlock); | |
4490 | ||
4491 | rc = qeth_register_dbf_views(); | |
4492 | if (rc) | |
4493 | goto out_err; | |
4494 | rc = ccw_driver_register(&qeth_ccw_driver); | |
4495 | if (rc) | |
4496 | goto ccw_err; | |
4497 | rc = ccwgroup_driver_register(&qeth_core_ccwgroup_driver); | |
4498 | if (rc) | |
4499 | goto ccwgroup_err; | |
4500 | rc = driver_create_file(&qeth_core_ccwgroup_driver.driver, | |
4501 | &driver_attr_group); | |
4502 | if (rc) | |
4503 | goto driver_err; | |
035da16f | 4504 | qeth_core_root_dev = root_device_register("qeth"); |
4a71df50 FB |
4505 | rc = IS_ERR(qeth_core_root_dev) ? PTR_ERR(qeth_core_root_dev) : 0; |
4506 | if (rc) | |
4507 | goto register_err; | |
4a71df50 | 4508 | |
683d718a FB |
4509 | qeth_core_header_cache = kmem_cache_create("qeth_hdr", |
4510 | sizeof(struct qeth_hdr) + ETH_HLEN, 64, 0, NULL); | |
4511 | if (!qeth_core_header_cache) { | |
4512 | rc = -ENOMEM; | |
4513 | goto slab_err; | |
4514 | } | |
4515 | ||
4516 | return 0; | |
4517 | slab_err: | |
035da16f | 4518 | root_device_unregister(qeth_core_root_dev); |
4a71df50 FB |
4519 | register_err: |
4520 | driver_remove_file(&qeth_core_ccwgroup_driver.driver, | |
4521 | &driver_attr_group); | |
4522 | driver_err: | |
4523 | ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); | |
4524 | ccwgroup_err: | |
4525 | ccw_driver_unregister(&qeth_ccw_driver); | |
4526 | ccw_err: | |
74eacdb9 | 4527 | QETH_DBF_MESSAGE(2, "Initialization failed with code %d\n", rc); |
4a71df50 FB |
4528 | qeth_unregister_dbf_views(); |
4529 | out_err: | |
74eacdb9 | 4530 | pr_err("Initializing the qeth device driver failed\n"); |
4a71df50 FB |
4531 | return rc; |
4532 | } | |
4533 | ||
4534 | static void __exit qeth_core_exit(void) | |
4535 | { | |
035da16f | 4536 | root_device_unregister(qeth_core_root_dev); |
4a71df50 FB |
4537 | driver_remove_file(&qeth_core_ccwgroup_driver.driver, |
4538 | &driver_attr_group); | |
4539 | ccwgroup_driver_unregister(&qeth_core_ccwgroup_driver); | |
4540 | ccw_driver_unregister(&qeth_ccw_driver); | |
683d718a | 4541 | kmem_cache_destroy(qeth_core_header_cache); |
4a71df50 | 4542 | qeth_unregister_dbf_views(); |
74eacdb9 | 4543 | pr_info("core functions removed\n"); |
4a71df50 FB |
4544 | } |
4545 | ||
4546 | module_init(qeth_core_init); | |
4547 | module_exit(qeth_core_exit); | |
4548 | MODULE_AUTHOR("Frank Blaschka <frank.blaschka@de.ibm.com>"); | |
4549 | MODULE_DESCRIPTION("qeth core functions"); | |
4550 | MODULE_LICENSE("GPL"); |